A setgeometry implementation. [untested]

fix dmeventd build

BUGS

@@ -1 +0,0 @@
-LVM2's device-mapper driver and ext3 are incompatible at the moment.

INSTALL

@@ -6,8 +6,8 @@ LVM2 installation
    Ensure the device-mapper has been installed on the machine.
 
    The device-mapper should be in the kernel (look for 'device-mapper'
-   messages in the kernel logs) and /usr/include/libdevmapper.h should 
-   be present.
+   messages in the kernel logs) and /usr/include/libdevmapper.h 
+   and libdevmapper.so should be present.
 
    The device-mapper is available from:
      ftp://ftp.sistina.com/pub/LVM2/device-mapper/
@@ -17,9 +17,15 @@ LVM2 installation
 
    Run the 'configure' script from the top directory.
 
-   If you do not have GNU readline (http://www.gnu.org/directory/readline.html)
-   installed use
-     ./configure --disable-readline
+   If you wish to use the built-in LVM2 shell and have GNU readline 
+   installed (http://www.gnu.org/directory/readline.html) use:
+     ./configure --enable-readline
+
+   If you don't want to include the LVM1 backwards-compatibility code use:
+     ./configure --with-lvm1=none 
+
+   To separate the LVM1 support into a shared library loaded by lvm.conf use:
+     ./configure --with-lvm1=shared
 
 
 3) Build and install LVM2.
@@ -31,6 +37,9 @@ LVM2 installation
 
    The tools will work fine without a configuration file being
    present, but you ought to review the example file in doc/example.conf.
-   For example, specifying the devices that LVM2 is to use should
+   For example, specifying the devices that LVM2 is to use can
    make the tools run more efficiently - and avoid scanning /dev/cdrom!
 
+Please also refer to the WHATS_NEW file and the manual pages for the 
+individual commands.
+

INTRO

@@ -1,18 +0,0 @@
-An introduction to LVM2
-=======================
-
-Background
-
-
-Compatibility with LVM1
-
-
-New features
-
-
-Missing features
-
-
-Future enhancements
-
-

Makefile.in

@@ -1,34 +1,59 @@
 #
-# Copyright (C) 2001 Sistina Software
+# Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.
+# Copyright (C) 2004 Red Hat, Inc. All rights reserved.
 #
-# This LVM library is free software; you can redistribute it and/or
-# modify it under the terms of the GNU Library General Public
-# License as published by the Free Software Foundation; either
-# version 2 of the License, or (at your option) any later version.
+# This file is part of the LVM2.
 #
-# This LVM library is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-# Library General Public License for more details.
+# This copyrighted material is made available to anyone wishing to use,
+# modify, copy, or redistribute it subject to the terms and conditions
+# of the GNU General Public License v.2.
 #
-# You should have received a copy of the GNU Library General Public
-# License along with this LVM library; if not, write to the Free
-# Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
-# MA 02111-1307, USA
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software Foundation,
+# Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 
 srcdir = @srcdir@
 top_srcdir = @top_srcdir@
 VPATH = @srcdir@
 
-SUBDIRS = include man lib tools
+SUBDIRS = doc include man 
+
+ifeq ("@INTL@", "yes")
+  SUBDIRS += po
+endif
+
+SUBDIRS += lib tools daemons
+
+ifeq ("@DMEVENTD@", "yes")
+  SUBDIRS += dmeventd
+endif
 
 ifeq ($(MAKECMDGOALS),distclean)
-  SUBDIRS += test/mm test/device test/format1 test/regex test/filters
+  SUBDIRS += daemons/clvmd \
+	     dmeventd \
+	     lib/format1 \
+	     lib/format_pool \
+	     lib/locking \
+	     lib/mirror \
+	     lib/snapshot \
+	     po \
+	     test/mm test/device test/format1 test/regex test/filters
 endif
 
 include make.tmpl
 
+daemons: lib
 lib: include
-tools: include lib
+tools: lib
+dmeventd: tools
+po: tools daemons dmeventd
 
+ifeq ("@INTL@", "yes")
+lib.pofile: include.pofile
+tools.pofile: lib.pofile
+daemons.pofile: lib.pofile
+dmeventd.pofile: tools.pofile
+po.pofile: tools.pofile daemons.pofile dmeventd.pofile
+pofile: po.pofile
+endif
 

README

@@ -1,25 +1,23 @@
-This directory contains a beta release of LMV2, the new version of 
-the userland LVM tools designed for the new device-mapper for 
-the Linux kernel.
+This directory contains LVM2, the new version of the userland LVM
+tools designed for the new device-mapper for the Linux kernel.
 
 The device-mapper needs to be installed before compiling these LVM2 tools.
 
-For more information about LVM2 read the INTRO file.
+For more information about LVM2 read the WHATS_NEW file.
 Installation instructions are in INSTALL.
 
-This is beta-quality software, released for testing purposes only.
 There is no warranty - see COPYING and COPYING.LIB.
 
 Tarballs are available from:
-  ftp://ftp.sistina.com/pub/LVM2/tools/
-  ftp://ftp.sistina.com/pub/LVM2/device-mapper/
+  ftp://sources.redhat.com/pub/lvm2/
+  ftp://sources.redhat.com/pub/dm/
 
 To access the CVS tree use:
-  cvs -d :pserver:cvs@tech.sistina.com:/data/cvs login
-  CVS password: cvs1
-  cvs -d :pserver:cvs@tech.sistina.com:/data/cvs checkout LVM2
+  cvs -d :pserver:cvs@sources.redhat.com:/cvs/lvm2 login
+  CVS password: cvs
+  cvs -d :pserver:cvs@sources.redhat.com:/cvs/lvm2 co LVM2
 
 Mailing list for discussion/bug reports etc.
-  lvm-devel@sistina.com
-  Subscribe from http://lists.sistina.com/mailman/listinfo/lvm-devel
+  linux-lvm@redhat.com
+  Subscribe from https://www.redhat.com/mailman/listinfo/linux-lvm
 

TODO

@@ -1,28 +0,0 @@
-before 2.0
------------
-
-vgexport
-vgimport
-snapshots
-pvmove
-device-mapper support for 2.5 kernel series
-review FIXMEs
-extra validation & full consistency checks in format1 with LVM1
-partial activation (aka VG quorum)
-error message review
-locking during metadata changes
-format2 with atomic transactions
-bidirectional format1/format2 migration tool
-persistent minors
-statistics target and tool support
-review tool exit codes for LVM1 compatibility
-
-before 2.1
-----------
-
-e2fsadm
-lvmsadc
-lvmsar
-pvdata
-vgsplit
-vgmknodes

VERSION

@@ -1 +1 @@
-1.95.08-cvs (2002-05-21)
+2.02.03-cvs (2006-02-08)

WHATS_NEW

@@ -0,0 +1,638 @@
+Version 2.02.03 - 
+===================================
+  Fix dmeventd build.
+
+Version 2.02.02 - 7th February 2006
+===================================
+  Add %.so: %.a make template rule.
+  Switchover library building to use LIB_SUFFIX.
+  Only do lockfs filesystem sync when suspending snapshots.
+  Always print warning if activation is disabled.
+  vgreduce removes mirror images.
+  Add --mirrorsonly to vgreduce.
+  vgreduce replaces active LVs with error segment before removing them.
+  Set block_on_error parameter if available.
+  Add target_version.
+  Add details to format1 'Invalid LV in extent map' error message.
+  Fix lvscan snapshot full display.
+  Bring lvdisplay man page example into line.
+  Add mirror dmeventd library.
+  Add some activation logic to remove_mirror_images().
+  lvconvert can remove specified PVs from a mirror.
+  lvconvert turns an existing LV into a mirror.
+  Allow signed mirrors arguments.
+  Move create_mirror_log() into toollib.
+  Determine parallel PVs to avoid with ALLOC_NORMAL allocation.
+  Fix lv_empty.
+
+Version 2.02.01 - 23rd November 2005
+====================================
+  Fix lvdisplay cmdline to accept snapshots.
+  Fix open RO->RW promotion.
+  Fix missing vg_revert in lvcreate error path.
+
+Version 2.02.00 - 10th November 2005
+====================================
+  Extend allocation areas to avoid overflow with contiguous with other PVs.
+  Stop lvcreate attempting to wipe zero or error segments.
+  Added new lvs table attributes.
+  Separated out activation preload.
+  Moved activation functions into libdevmapper.
+  Fixed build_dm_name.
+  Add return macros.
+  Added xen xvd devices.
+  Clear up precommitted metadata better.
+  A pvresize implementation.
+  Fix contiguous allocation when there are no preceding segments.
+  Add mirror_seg pointer to lv_segment struct.
+  Only keep a device open if it's known to belong to a locked VG.
+  Fix lvdisplay to show all mirror destinations.
+  Replacement suspend code using libdevmapper dependency tree.
+  Add DEFS to make.tmpl.
+  Use dm_is_dm_major instead of local copy.
+  Allow mapped devices to be used as PVs.
+  Move set_selinux_context into libdevmapper.
+  Fix automatic text metadata buffer expansion (using macro).
+  Cache formatted text metadata buffer between metadata area writes.
+  Add pe_start field to pvs.
+  Add 'LVM-' prefix to uuids.
+  Split lv_segment_area from lv_segment to permit extension.
+  Replacement deactivation code using libdevmapper dependency tree.
+  Simplify dev_manager_info().
+  Attempt to load missing targets using modprobe.
+  Add -a to lvscan.
+  Move mknodes into libdevmapper.
+  Move bitset, hash, pool and dbg_malloc into libdevmapper.
+
+Version 2.01.15 - 16th October 2005
+===================================
+  Refuse to run pvcreate/pvremove on devices we can't open exclusively.
+  Use ORPHAN lock definition throughout.
+  Validate chunksize in lvcreate.
+  Reduce chunksize limit to 512k.
+  Fix chunksize field in reports.
+  Don't hide snapshots from default 'lvs' output.
+  Add is_dm_major() for use in duplicate device detection in lvmcache_add().
+  Really switch device number in lvmcache when it says it is doing so.
+  Option for bitset memory allocation using malloc as well as pool.
+  Don't assume exactly two mirrors when parsing mirror status.
+  Suppress fsync() error message on filesystems that don't support it.
+  Fix yes_no_prompt() error handling.
+  Add lvm.conf comment warning against multiple filter lines.
+  Tidy lvmconf.sh.
+  Add format1 dev_write debug messages.
+  Add clustered VG attribute to report.
+  Move lvconvert parameters into struct lvconvert_params.
+  Add clustered VG flag to LV lock requests.
+  Change LV locking macros to take lv instead of lvid.
+  Prepend 'cluster' activation parameter to mirror log when appropriate.
+  Pass exclusive flag to lv_activate and on to target activation code.
+  Prevent snapshot creation in a clustered VG for now.
+  Factor out adjusted_mirror_region_size() and generate_log_name_format().
+  Move compose_log_line() into mirror directory.
+  Factor out _get_library_path().
+  Don't kill idling clvmd threads.
+  clvmd no longer takes out locks for non-clustered LVs.
+  Recognise ATA over Ethernet (aoe) devices.
+
+Version 2.01.14 - 4th August 2005
+=================================
+  Fix lvconvert PV parameter in help string.
+  Prevent snapshots getting activated in a clustered VG.
+  Separate out _build_dev_string.
+  Move zero_lv to toollib.
+  Fix pool format handler to work with pv segment code.
+
+Version 2.01.13 - 13th July 2005
+================================
+  Fix pvmove segment splitting.
+  Abstract vg_validate.
+  Only make one attempt at contiguous allocation.
+  Fix lvm1 format metadata read.
+  Fix lvm1 format non-mirror lvcreate.
+
+Version 2.01.12 - 14th June 2005
+================================
+  Various allocation-related pvmove fixes.
+  Log an error if clvmd can't resolve a host name got from CCS.
+  Fix potential spin loop in clvmd.
+
+Version 2.01.11 - 13th June 2005
+================================
+  Added lvmconf.sh.
+  Use matchpathcon mode parameter.
+  Don't defer closing dead FDs in clvmd.
+  Remove hard-coded 64k text metadata writing restriction.
+  Make VG name restrictions consistent.
+  Introduce lvconvert.  So far only removes mirror images.
+  Allow mirror images to be resized.
+  Allow mirror images to have more than one segment.
+  Centralise restrictions on LV names.
+  Always insert an intermediate layer for mirrors.
+  Suppress hidden LVs from reports unless --all is given.
+  Use square brackets for hidden LVs in reports.
+  Allow the creation of mirrors with contiguous extents.
+  Always perform sanity checks against metadata before committing it to disk.
+  Split lv_extend into two steps: choosing extents + allocation to LV(s).
+  Add mirror log region size to metadata.
+  Use list_iterate_items throughout and add list*back macros.
+  Introduce seg_ macros to access areas.
+  Add segtype_is_ macros.
+  Support tiny metadata areas for pool conversions.
+  Mirror activation handles disk log as well as core.
+  Activation code recognises mirror log dependency.
+  Add mirror_log and regionsize fields to report.
+  Fix non-orphan pvchange -u.
+  Fix vgmerge to handle duplicate LVIDs.
+  Move archiver code from tools into library.
+  vgscan/change/display/vgs automatically create metadata backups if needed.
+  Merge cloned allocation functions.
+  Fix contiguous allocation policy with linear.
+  Cope with missing format1 PVs again.
+  Remove lists of free PV segments.
+  Simplify pv_maps code and remove slow bitset algorithm.
+  Red-Hat-ify the clvmd rhel4 initscript.
+  %Zu->%zu
+  Fix loopfiles alias alloc & mem debugging.
+  Un-inline dbg_strdup.
+  lv_reduce tidying.
+  Remove some unnecessary parameters.
+  Introduce seg_is macros.
+
+Version 2.01.10 - 3rd May 2005
+==============================
+  Don't create backup and archive dirs till needed.
+  Reinstate full PV size when removing from VG.
+  Support loopfiles for testing.
+  Tidy lv_segment interface.
+  pv_segment support.
+  vgchange --physicalextentsize
+  Internal snapshot restructuring.
+  Remove unused internal non-persistent snapshot option.
+  Allow offline extension of snapshot volumes.
+  Move from 2-step to 3-step on-disk metadata commit.
+  Scan ramdisks too and allow non-O_DIRECT fallback.
+  Annotate, tidy and extend list.h.
+  Alignment tidying.
+  Make clvmd work around some "bugs" in gulm's node state notifications.
+  Tidy clvmd's SIGHUP handler
+
+Version 2.01.09 - 4th April 2005
+================================
+  Add --ignorelockingfailure to vgmknodes.
+  clvmd: Don't allow user operations to start until the lvm thread is fully up.
+  clvmd-gulm: set KEEPALIVE on sockets.
+
+Version 2.01.08 - 22nd March 2005
+=================================
+  Add clustered attribute so vgchange can identify clustered VGs w/o locking.
+  Improve detection of external changes affecting internal cache.
+  Add 'already in device cache' debug message.
+  Add -a to pvdisplay -C.
+  Avoid rmdir opendir error messsages when dir was already removed.
+  Tighten signal handlers.
+  Avoid some compiler warnings.
+  Additional rename failure error message.
+  read/write may be macros.
+  clvmd: don't take out lvm thread lock at startup, it only protects jobs list.
+
+Version 2.01.07 - 8th March 2005
+================================
+  Cope with new devices appearing by rescanning /dev if a uuid can't be found.
+  Remove DESTDIR from LVM_SHARED_PATH.
+  clvmd fixes: make FDs close-on-exec
+               gulm unlocks VG & orphan locks at startup in case they are stale
+               gulm now unlocks VG & orphan locks if client dies.
+
+Version 2.01.06 - 1st March 2005
+================================
+  Suppress 'open failed' error messages during scanning.
+  Option to suppress warnings of file descriptors left open.
+  Fix default value of metadatacopies in documentation (2->1).
+  Fix clvmd-gulm locking.
+  ./configure --enable-debug now enables debugging code in clvmd.
+  Fix clvmd-gulm node up/down code so it actually works.
+  clvmd-gulm now releases locks when shut down.
+
+Version 2.01.05 - 18th February 2005
+====================================
+  Static binary invokes dynamic binary if appropriate.
+  Make clvmd config check a little more tolerant.
+  gulm clvmd can now cope with >1 message arriving in a TCP message.
+
+Version 2.01.04 - 9th February 2005
+===================================
+  Add fixed offset to imported pool minor numbers.
+  Update binary pathnames in clvmd_init_rhel4.
+  lvm2cmd.so should skip the check for open fds.
+  Remove unused -f from pvmove.
+  Gulm clvmd doesn't report "connection refused" errors.
+  clvmd does a basic config file sanity check at startup.
+  Fix potential thread shutdown race in clvmd.
+
+Version 2.01.03 - 1st February 2005
+===================================
+  More 64-bit display/report fixes.
+  More informative startup mesg if can't create /etc/lvm.
+  Fix snapshot device size bug (since 2.01.01).
+  clvmd announces startup and cluster connection in syslog.
+  Gulm clvmd doesn't hang trying to talk to a rebooted node.
+  Gulm clvmd doesn't print cman error on startup.
+
+Version 2.01.02 - 21st January 2005
+===================================
+  Update clvmd_init_rhel4: use lvm.static and don't load dlm.
+  Fix some size_t printing.
+  Fix 64 bit xlate consts.
+  Split out pool sptype_names to avoid unused const.
+  Always fail if random id generation fails.
+  Recognise gnbd devices.
+  Fix clvmd startup bug introduced in cman/gulm amalgamation.
+  Improve reporting of node-specific locking errors.
+
+Version 2.01.01 - 19th January 2005
+===================================
+  Fix clvmd lv_info_by_lvid open_count.
+  Store snapshot and origin sizes separately.
+  Update vgcreate man page.
+
+Version 2.01.00 - 17th January 2005
+===================================
+  Fix vgscan metadata auto-correction.
+  Only ask libdevmapper for open_count when we need it.
+  Adjust RHEL4 clvmd init script priority.
+  Enable building of CMAN & GULM versions of clvmd into a single binary
+
+Version 2.00.33 - 7th January 2005
+==================================
+  pvcreate wipes first 4 sectors unless given --zero n.
+  gulm clvmd now uses new ccsd key names.
+  gulm clvmd now doesn't ignore the first node in cluster.conf
+  Improve clvmd failure message if it's already running.
+  Allow user to kill clvmd during initialisation.
+  Fix off-by-one error in cluster_locking that could cause read hangs.
+
+Version 2.00.32 - 22nd December 2004
+====================================
+  Drop static/dl restriction for now.
+  Fix an error fprintf.
+  Fix vgdisplay -s. Breaks (undocumented) lvs/pvs/vgs -s instead for now.
+  Fix device reference counting on re-opens.
+  Ignore sysfs symlinks when DT_UNKNOWN.
+  Add clvmd init script for RHEL4.
+  Skip devices that are too small to be PVs.
+  Fix pvchange -x segfault with lvm2-format orphan.
+  Cope with empty msdos partition tables.
+  Add CONTRIBUTORS file.
+
+Version 2.00.31 - 12th December 2004
+====================================
+  Reopen RO file descriptors RW if necessary.
+
+Version 2.00.30 - 10th December 2004
+====================================
+  Additional device-handling debug messages.
+  Additional verbosity level -vvvv includes line numbers and backtraces.
+  Verbose messages now go to stderr not stdout.
+  Close any stray file descriptors before starting.
+  Refine partitionable checks for certain device types.
+  Allow devices/types to override built-ins.
+  Fix lvreduce man page .i->.I
+  Fix vgsplit man page title.
+  Fix clvmd man makefile.
+  Extend dev_open logging.
+  Make clvmd_fix_conf.sh UNDOable.
+
+Version 2.00.29 - 27th November 2004
+====================================
+  xlate compilation fix.
+
+Version 2.00.28 - 27th November 2004
+====================================
+  Fix partition table & md signature detection.
+  Minor configure/makefile tidy.
+  Export version.h from tools for clvmd.
+
+Version 2.00.27 - 24th November 2004
+====================================
+  Trap large memory allocation requests.
+  Fix to partition table detection code.
+  Improve filter debug mesgs.
+  Make clvmd_fix_conf.sh UNDOable
+
+Version 2.00.26 - 23rd November 2004
+====================================
+  Improve pool debugging stats.
+  Detect partition table signature.
+  pvcreate wipes md superblocks. (With --uuid or --restorefile it prompts.)
+  Separate out md superblock detection code.
+  Prevent snapshot origin resizing.
+  Improve a vgremove error message.
+  Update some man pages.
+  Allow y/n with -ae args (exclusive activation).
+  Fixes to lvcreate vgname parsing.
+  Fix dm_name string size calculation.
+  Improve clvmd error reporting during startup.
+  Make clvmd cope with large gaps in node numbers IDs.
+  Make clvmd initialisation cope better with debugging output.
+  Tidy clvmd socket callbacks so all work happens outside main loop.
+  clvmd -V now displays lvm version too.
+  Add optional gulm build for clvmd
+
+Version 2.00.25 - 29th September 2004
+=====================================
+  Fix return code from rm_link for vgmknodes.
+  Make clvmd LV hash table thread-safe.
+  Fix clvmd locking so it will lock out multiple users on the same node.
+  Fix clvmd VG locking to it can cope with multiple VG locks.
+  Remove spurious trailing dot in lvreduce man page.
+  Fix vgremove locking.
+
+Version 2.00.24 - 16th September 2004
+=====================================
+  Fix pool_empty so it really does empty the memory pool.
+  Rename old segtypes files to segtype.
+  Some fixes to memory debugging code.
+  Exclude internal commands formats & segtypes from install.
+
+Version 2.00.23 - 15th September 2004
+=====================================
+  Export dm name build & split functions.
+  Use O_NOATIME on devices if available.
+  Write log message when each segtype/format gets initialised.
+  New commands 'segtypes' and 'formats'.
+  Suppress pvmove abort message in test mode.
+  Improve pvcreate/remove device not found error message.
+  Allow pvmove to move data within the same PV.
+  Describe how pvmove works on man page.
+  Test for incompatible format/segtype combinations in lv_extend.
+  Fix lvchange example on man page.
+
+Version 2.00.22 - 3rd September 2004
+====================================
+  Fix /dev/vgname perms.
+  Restructure xlate.h.
+  Add clvmd man page.
+
+Version 2.00.21 - 19th August 2004
+==================================
+  Update cnxman-socket.h from cman.
+  Recognise iseries/vd devices.
+  Use 'make install_cluster' to install cluster extensions only.
+  Cope with DT_UNKNOWN in sysfs.
+  Fix extents_moved metadata size comment.
+  Remove duplicate line in pvremove help text.
+  Support variable mirror region size.
+  Support PE ranges in pvmove source PV.
+  Fixes to as-yet-unused LV segment splitting code.
+  Change alloc_areas to pe_ranges and allow suppression of availability checks.
+  Add dev_size column to pvs.
+  Add report columns for in-kernel device number.
+
+Version 2.00.20 - 3 July 2004
+=============================
+  More autoconf fixes.
+  Fix device number handling for 2.6 kernels.
+
+Version 2.00.19 - 29 June 2004
+==============================
+  Reduce severity of setlocale failure message.
+  Recognise argv[0] "initrd-lvm" (pld-linux).
+  Make -O2 configurable.
+  Added --disable-selinux to configure script.
+  LD_FLAGS->LDFLAGS & LD_DEPS->LDDEPS in configure script.
+  Add init_debug to clvmd.
+
+Version 2.00.18 - 24 June 2004
+==============================
+  Fix vgchange activation.
+  Add cluster support.
+
+Version 2.00.17 - 20 June 2004
+==============================
+  configure --enable-fsadm to try out fsadm.  fsadm is not tested yet.
+  Display all filtered devices, not just PVs, with pvs -a.
+  Fix sync_dir() when no / in filename
+  vgcfgbackup -f accepts template with %s for VG name.
+  Extend hash functions to handle non-null-terminated data.
+  Add local activation support.
+  Tidy relative paths in makefile includes.
+  fsadm support for fsck and resizing - needs testing.
+  Add read-only GFS pool support.
+  Add lvm2create_initrd script from http://poochiereds.net/svn/lvm2/
+  Fix rounding of large diplayed sizes.
+  Suppress decimal point when using units of sectors/bytes.
+  Additional kernel target checks before pvmove & snapshot creation.
+  Add i2o_block.
+
+Version 2.00.16 - 24 May 2004
+=============================
+  Set area_count within alloc_lv_segment.
+  Remove error labels from lvresize.
+  Fix a pvs error path.
+  xxchange -ae for exclusive activation.
+  Don't return non-zero status if there aren't any volume groups.
+  Add --alloc argument to tools.
+  Rename allocation policies to contiguous, normal, anywhere, inherit.
+  nextfree becomes normal; anywhere isn't implemented yet.
+  LV inherits allocation policy from VG. Defaults: LV - inherit; VG - normal
+  Additional status character added to vgs to indicate allocation policy.
+  Add reset_fn to external_locking.
+  Ensure presence of virtual targets before attempting activating.
+  Attempt to fix resizing of snapshot origins.
+  Restructure lvresize, bringing it closer to lvcreate.
+  A quick sanity check on vg_disk struct when read in.  More checks needed.
+  Only include visible LVs in active/open counts.
+  Add virtual segment types, zero and error.  A large sparse device can be
+constructed as a writeable snapshot of a large zero segment.
+  Add --type to lvcreate/resize.
+  Push lv_create & alloc policy up to tool level.
+  Fix pvdisplay return code.
+  Detect invalid LV names in arg lists.
+  Reporting uses line-at-a-time output.
+  lvm2 format sets unlimited_vols format flag.
+  Internal-only metadata flag support.
+  Basic checking for presence of device-mapper targets.
+  Separate out polldaemon.
+  Revise internal locking semantics.
+  Move find_pv_by_name to library.
+  Rename move->copy.
+  Add devices to segments report.
+  Begin separating out segment code. There's a lot of change here.
+  Compress any (obsolete) long LVM1 pvids encountered.
+  Support for tagged config files.
+  Don't abort operations if selinux present but disabled.
+  Fix typo in configure which left HAVE_LIBDL unset.
+
+Version 2.00.15 - 19 Apr 2004
+=============================
+  configure --with-owner= --with-group= to avoid -o and -g args to 'install'
+
+Version 2.00.14 - 16 Apr 2004
+=============================
+  Use 64-bit file functions by default.
+
+Version 2.00.13 - 16 Apr 2004
+=============================
+  Set devices/md_component_detection = 1 to ignore devices containing md
+  superblocks. [Luca Berra]
+  Ignore error setting selinux file context if fs doesn't support it.
+
+Version 2.00.12 - 14 Apr 2004
+=============================
+  Install a default lvm.conf into /etc/lvm if there isn't one already.
+  Allow different installation dir for lvm.static (configure --staticdir=)
+  Fix inverted selinux error check.
+  Recognise power2 in /proc/devices.
+  Fix counting in lvs_in_vg_opened. [It ignored devices open more than once.]
+
+Version 2.00.11 - 8 Apr 2004
+============================
+  Set fallback_to_lvm1 in lvm.conf (or configure --enable-lvm1_fallback)
+  to run lvm1 binaries if running a 2.4 kernel without device-mapper.
+
+Version 2.00.10 - 7 Apr 2004
+============================
+  More fixes for static build.
+  Add basic selinux support.
+  Fix sysfs detection.
+
+Version 2.00.09 - 31 Mar 2004
+=============================
+  Update copyright notices for Red Hat.
+  Fix vgmknodes to remove dud /dev/mapper entries. (libdevmapper update reqd).
+  Add LVM1-style colon output to vgdisplay.
+  lvchange --refresh to reload active LVs.
+  Add string display to memory leak dump.
+  Add locking flags & memlock option.
+  Add list_versions to library.
+  Ignore open hidden LVs when checking if deactivation is OK.
+  Suppress move percentage when device inactive.
+  Add lv_info_by_lvid.
+  Various tidy-ups to the build process.
+  Rebaseline internal verbose level.
+  Add --nolocking option for read operations if locking is failing.
+  Add option to compile into a library.
+  When compiled without libdevmapper, only print warning message once.
+  Fix lvreduce PV extent calculations.
+  Fix DESTDIR to work with configure path overrides.
+  Always use / as config file separator & rename internal config file variables.
+  Add support for tagging PV/VG/LVs and hosts.
+  Fix rare bug in recognition of long cmdline argument forms.
+  Add basic internationalisation infrastructure.
+  Don't recurse symlinked dirs such as /dev/fd on 2.6 kernels.
+  Update autoconf files.
+  Add sysfs block device filtering for 2.6 kernels.
+  Update refs for move to sources.redhat.com.
+
+Friday 14th November 2003
+=========================
+Some bug fixes & minor enhancements, including:
+  Backwards compatibility with LVM1 metadata improved.
+  Missing man pages written.
+  Tool error codes made more consistent.
+  vgmknodes written.
+  O_DIRECT can be turned off if it doesn't work in your kernel.
+  dumpconfig to display the active configuration file
+
+You need to update libdevmapper before using 'vgmknodes' or 'vgscan --mknodes'.
+If your root filesystem is on an LV, you should run one of those two
+commands to fix up the special files in /dev in your real root filesystem 
+after finishing with your initrd.  Also, remember you can use
+'vgchange --ignorelockingfailure' on your initrd if the tool fails because
+it can't write a lock file to a read-only filesystem.
+
+Wednesday 30th April 2003
+=========================
+A pvmove implementation is now available for the new metadata format.
+
+When running a command that allocates space (e.g. lvcreate), you can now
+restrict not only which disk(s) may be used but also the Physical Extents 
+on those disks.  e.g. lvcreate -L 10 vg1 /dev/hda6:1000-2000:3000-4000
+
+
+Monday 18th November 2002
+========================
+
+The new format of LVM metadata is ready for you to test!
+  We expect it to be more efficient and more robust than the original format.
+  It's more compact and supports transactional changes and replication.
+  Should things go wrong on a system, it's human-readable (and editable).
+
+Please report any problems you find to the mailing list, 
+linux-lvm@sistina.com.  The software has NOT yet been thoroughly
+tested and so quite possibly there'll still be some bugs in it.
+Be aware of the disclaimer in the COPYING file.
+
+While testing, we recommend turning logging on in the configuration file 
+to provide us with diagnostic information:
+  log {
+        file="/tmp/lvm2.log"
+	level=7
+	activation=1
+  }
+
+You should schedule regular backups of your configuration file and
+metadata backups and archives (normally kept under /etc/lvm).
+
+Please read docs/example.conf and "man lvm.conf" to find out more about 
+the configuration file.
+
+To convert an existing volume group called vg1 to the new format using
+the default settings, use "vgconvert -M2 vg1".  See "man vgconvert".
+
+-M (or --metadatatype in its long form) is a new flag to indicate which
+format of metadata the command should use for anything it creates.
+Currently, the valid types are "lvm1" and "lvm2" and they can be
+abbreviated to "1" and "2" respectively.  The default value for this
+flag can be changed in the global section in the config file.
+
+Backwards-compatible support for the original LVM1 metadata format is
+maintained, but it can be moved into a shared library or removed
+completely with configure's --with-lvm1 option.
+
+Under LVM2, the basic unit of metadata is the volume group.  Different
+volume groups can use different formats of metadata - vg1 could use
+the original LVM1 format while vg2 used the new format - but you can't
+mix formats within a volume group.  So to add a PV to an LVM2-format
+volume group you must run "pvcreate -M2" on it, followed by "vgextend".
+
+With LVM2-format metadata, lvextend will let you specify striping
+parameters.  So an LV could consist of two or more "segments" - the
+first segment could have 3 stripes while the second segment has just 2.
+
+LVM2 maintains a backup of the current metadata for each volume group
+in /etc/lvm/backup, and puts copies of previous versions in
+/etc/lvm/archive.  "vgcfgbackup" and "vgcfgrestore" can be used to
+create and restore from these files.  If you fully understand what 
+you're doing, metadata can be changed by editing a copy of a current
+backup file and using vgcfgrestore to reload it.
+
+Please read the pvcreate man page for more information on the new
+format for metadata.
+
+All tools that can change things have a --test flag which can be used
+to check the effect  of a set of cmdline args without really making the
+changes.
+
+
+What's not finished?
+====================
+The internal cache.  If you turn on debugging output you'll see lots of
+repeated messages, many of which will eventually get optimised out.
+
+--test sometimes causes a command to fail (e.g. vgconvert --test) even 
+though the real command would work: again, fixing this is waiting for 
+the work on the cache.
+
+Several of the tools do not yet contain the logic to handle full
+recovery: combinations of pvcreate and vgcfgrestore may sometimes be
+needed to restore metadata if a tool gets interrupted or crashes or
+finds something unexpected.  This applies particularly to tools that
+work on more than one volume group at once (e.g. vgsplit).
+
+Display output.  Some metadata information cannot yet be displayed.
+
+Recovery tools to salvage "lost" metadata directly from the disks:
+but we hope the new format will mean such tools are hardly ever needed!
+

WHATS_NEW_DM

@@ -0,0 +1,164 @@
+Version 1.02.04 - 
+============================
+  Add setgeometry.
+
+Version 1.02.03 - 7 Feb 2006
+============================
+  Add exported functions to set uid, gid and mode.
+  Rename _log to dm_log and export.
+  Add dm_tree_skip_lockfs.
+  Fix dm_strdup debug definition.
+  Fix hash function to avoid using a negative array offset.
+  Don't inline _find in hash.c and tidy signed/unsigned etc.
+  Fix libdevmapper.h #endif.
+  Fix dmsetup version driver version.
+  Add sync, nosync and block_on_error mirror log parameters.
+  Add hweight32.
+  Fix dmeventd build.
+
+Version 1.02.02 - 2 Dec 2005
+============================
+  dmeventd added.
+  Export dm_task_update_nodes.
+  Use names instead of numbers in messages when ioctls fail.
+
+Version 1.02.01 - 23 Nov 2005
+=============================
+  Resume snapshot-origins last.
+  Drop leading zeros from dm_format_dev.
+  Suppress attempt to reload identical table.
+  Additional LVM- prefix matching for transitional period.
+
+Version 1.02.00 - 10 Nov 2005
+=============================
+  Added activation functions to library.
+  Added return macros.
+  Also suppress error if device doesn't exist with DM_DEVICE_STATUS.
+  Export dm_set_selinux_context().
+  Add dm_driver_version().
+  Added dependency tree functions to library.
+  Added hash, bitset, pool, dbg_malloc to library.
+  Added ls --tree to dmsetup.
+  Added dmsetup --nolockfs support for suspend/reload.
+
+Version 1.01.05 - 26 Sep 2005
+=============================
+  Resync list.h with LVM2.
+  Remember increased buffer size and use for subsequent calls.
+  On 'buffer full' condition, double buffer size and repeat ioctl.
+  Fix termination of getopt_long() option array.
+  Report 'buffer full' condition with v4 ioctl as well as with v1.
+
+Version 1.01.04 - 2 Aug 2005
+============================
+  Fix dmsetup ls -j and status --target with empty table.
+
+Version 1.01.03 - 13 Jun 2005
+=============================
+  Use matchpathcon mode parameter.
+  Fix configure script to re-enable selinux.
+
+Version 1.01.02 - 17 May 2005
+=============================
+  Call dm_lib_exit() and dm_lib_release() automatically now.
+  Add --target <target_type> filter to dmsetup table/status/ls.
+  Add --exec <command> to dmsetup ls.
+  Fix dmsetup getopt_long usage.
+
+Version 1.01.01 - 29 Mar 2005
+=============================
+  Update dmsetup man page.
+  Drop-in devmap_name replacement.
+  Add option to compile without ioctl for testing.
+  Fix DM_LIB_VERSION sed.
+
+Version 1.01.00 - 17 Jan 2005
+=============================
+  Add dm_task_no_open_count() to skip getting open_count.
+
+Version 1.00.21 - 7 Jan 2005
+============================
+  Fix /proc/devices parsing.
+
+Version 1.00.20 - 6 Jan 2005
+============================
+  Attempt to fix /dev/mapper/control transparently if it's wrong.
+  Configuration-time option for setting uid/gid/mode for /dev/mapper nodes.
+  Update kernel patches for 2.4.27/2.4.28-pre-4 (includes minor fixes).
+  Add --noheadings columns option for colon-separated dmsetup output.
+  Support device referencing by uuid or major/minor.
+  Warn if kernel data didn't fit in buffer.
+  Fix a printf.
+
+Version 1.00.19 - 3 July 2004
+=============================
+  More autoconf fixes.
+  Fix a dmsetup newline.
+  Fix device number handling for 2.6 kernels.
+
+Version 1.00.18 - 20 Jun 2004
+=============================
+  Fix a uuid free in libdm-iface.
+  Fix a targets string size calc in driver.
+  Add -c to dmsetup for column-based output.
+  Add target message-passing ioctl.
+
+Version 1.00.17 - 17 Apr 2004
+=============================
+  configure --with-owner= --with-group= to avoid -o and -g args to 'install'
+  Fix library selinux linking.
+
+Version 1.00.16 - 16 Apr 2004
+=============================
+  Ignore error setting selinux file context if fs doesn't support it.
+
+Version 1.00.15 - 7 Apr 2004
+============================
+  Fix status overflow check in kernel patches.
+
+Version 1.00.14 - 6 Apr 2004
+============================
+  Fix static selinux build.
+
+Version 1.00.13 - 6 Apr 2004
+============================
+  Add some basic selinux support.
+
+Version 1.00.12 - 6 Apr 2004
+============================
+  Fix dmsetup.static install.
+
+Version 1.00.11 - 5 Apr 2004
+============================
+  configure --enable-static_link does static build in addition to dynamic.
+  Moved Makefile library targets definition into template.
+
+Version 1.00.10 - 2 Apr 2004
+============================
+  Fix DESTDIR handling.
+  Static build installs to dmsetup.static.
+  Basic support for internationalisation.
+  Minor Makefile tidy-ups/fixes.
+
+Version 1.00.09 - 31 Mar 2004
+=============================
+  Update copyright notices to Red Hat.
+  Move full mknodes functionality from dmsetup into libdevmapper.
+  Avoid sscanf %as for uClibc compatibility.
+  Cope if DM_LIST_VERSIONS is not defined.
+  Add DM_LIST_VERSIONS functionality to kernel patches.
+  Generate new kernel patches for 2.4.26-rc1.
+
+Version 1.00.08 - 27 Feb 2004
+=============================
+  Added 'dmsetup targets'.
+  Added event_nr support to 'dmsetup wait'.
+  Updated dmsetup man page.
+  Allow logging function to be reset to use internal one.
+  Bring log macros in line with LVM2 ones.
+  Added 'make install_static_lib' which installs libdevmapper.a.
+  Made configure/makefiles closer to LVM2 versions.
+  Fixed DESTDIR for make install/install_static_lib.
+  Updated README/INSTALL to reflect move to sources.redhat.com.
+  Updated autoconf files to 2003-06-17.
+

autoconf/config.sub

@@ -1,6 +1,10 @@
 #! /bin/sh
-# Configuration validation subroutine script, version 1.1.
-#   Copyright (C) 1991, 92-97, 1998, 1999 Free Software Foundation, Inc.
+# Configuration validation subroutine script.
+#   Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
+#   2000, 2001, 2002, 2003 Free Software Foundation, Inc.
+
+timestamp='2003-06-17'
+
 # This file is (in principle) common to ALL GNU software.
 # The presence of a machine in this file suggests that SOME GNU software
 # can handle that machine.  It does not imply ALL GNU software can.
@@ -25,6 +29,9 @@
 # configuration script generated by Autoconf, you may include it under
 # the same distribution terms that you use for the rest of that program.
 
+# Please send patches to <config-patches@gnu.org>.  Submit a context
+# diff and a properly formatted ChangeLog entry.
+#
 # Configuration subroutine to validate and canonicalize a configuration type.
 # Supply the specified configuration type as an argument.
 # If it is invalid, we print an error message on stderr and exit with code 1.
@@ -45,30 +52,73 @@
 #	CPU_TYPE-MANUFACTURER-KERNEL-OPERATING_SYSTEM
 # It is wrong to echo any other type of specification.
 
-if [ x$1 = x ]
-then
-	echo Configuration name missing. 1>&2
-	echo "Usage: $0 CPU-MFR-OPSYS" 1>&2
-	echo "or     $0 ALIAS" 1>&2
-	echo where ALIAS is a recognized configuration type. 1>&2
-	exit 1
-fi
+me=`echo "$0" | sed -e 's,.*/,,'`
 
-# First pass through any local machine types.
-case $1 in
-	*local*)
-		echo $1
-		exit 0
-		;;
-	*)
-	;;
+usage="\
+Usage: $0 [OPTION] CPU-MFR-OPSYS
+       $0 [OPTION] ALIAS
+
+Canonicalize a configuration name.
+
+Operation modes:
+  -h, --help         print this help, then exit
+  -t, --time-stamp   print date of last modification, then exit
+  -v, --version      print version number, then exit
+
+Report bugs and patches to <config-patches@gnu.org>."
+
+version="\
+GNU config.sub ($timestamp)
+
+Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001
+Free Software Foundation, Inc.
+
+This is free software; see the source for copying conditions.  There is NO
+warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE."
+
+help="
+Try \`$me --help' for more information."
+
+# Parse command line
+while test $# -gt 0 ; do
+  case $1 in
+    --time-stamp | --time* | -t )
+       echo "$timestamp" ; exit 0 ;;
+    --version | -v )
+       echo "$version" ; exit 0 ;;
+    --help | --h* | -h )
+       echo "$usage"; exit 0 ;;
+    -- )     # Stop option processing
+       shift; break ;;
+    - )	# Use stdin as input.
+       break ;;
+    -* )
+       echo "$me: invalid option $1$help"
+       exit 1 ;;
+
+    *local*)
+       # First pass through any local machine types.
+       echo $1
+       exit 0;;
+
+    * )
+       break ;;
+  esac
+done
+
+case $# in
+ 0) echo "$me: missing argument$help" >&2
+    exit 1;;
+ 1) ;;
+ *) echo "$me: too many arguments$help" >&2
+    exit 1;;
 esac
 
 # Separate what the user gave into CPU-COMPANY and OS or KERNEL-OS (if any).
 # Here we must recognize all the valid KERNEL-OS combinations.
 maybe_os=`echo $1 | sed 's/^\(.*\)-\([^-]*-[^-]*\)$/\2/'`
 case $maybe_os in
-  linux-gnu*)
+  nto-qnx* | linux-gnu* | freebsd*-gnu* | netbsd*-gnu* | storm-chaos* | os2-emx* | rtmk-nova*)
     os=-$maybe_os
     basic_machine=`echo $1 | sed 's/^\(.*\)-\([^-]*-[^-]*\)$/\1/'`
     ;;
@@ -94,7 +144,7 @@ case $os in
 	-convergent* | -ncr* | -news | -32* | -3600* | -3100* | -hitachi* |\
 	-c[123]* | -convex* | -sun | -crds | -omron* | -dg | -ultra | -tti* | \
 	-harris | -dolphin | -highlevel | -gould | -cbm | -ns | -masscomp | \
-	-apple)
+	-apple | -axis)
 		os=
 		basic_machine=$1
 		;;
@@ -105,9 +155,17 @@ case $os in
 	-scout)
 		;;
 	-wrs)
-		os=vxworks
+		os=-vxworks
 		basic_machine=$1
 		;;
+	-chorusos*)
+		os=-chorusos
+		basic_machine=$1
+		;;
+ 	-chorusrdb)
+ 		os=-chorusrdb
+		basic_machine=$1
+ 		;;
 	-hiux*)
 		os=-hiuxwe2
 		;;
@@ -156,33 +214,72 @@ case $os in
 	-psos*)
 		os=-psos
 		;;
+	-mint | -mint[0-9]*)
+		basic_machine=m68k-atari
+		os=-mint
+		;;
 esac
 
 # Decode aliases for certain CPU-COMPANY combinations.
 case $basic_machine in
 	# Recognize the basic CPU types without company name.
 	# Some are omitted here because they have special meanings below.
-	tahoe | i860 | ia64 | m32r | m68k | m68000 | m88k | ns32k | arc | arm \
-		| arme[lb] | pyramid | mn10200 | mn10300 | tron | a29k \
-		| 580 | i960 | h8300 \
-		| hppa | hppa1.0 | hppa1.1 | hppa2.0 | hppa2.0w | hppa2.0n \
-		| alpha | alphaev[4-7] | alphaev56 | alphapca5[67] \
-		| we32k | ns16k | clipper | i370 | sh | powerpc | powerpcle \
-		| 1750a | dsp16xx | pdp11 | mips16 | mips64 | mipsel | mips64el \
-		| mips64orion | mips64orionel | mipstx39 | mipstx39el \
-		| mips64vr4300 | mips64vr4300el | mips64vr4100 | mips64vr4100el \
-		| mips64vr5000 | miprs64vr5000el | mcore \
-		| sparc | sparclet | sparclite | sparc64 | sparcv9 | v850 | c4x \
-		| thumb | d10v)
+	1750a | 580 \
+	| a29k \
+	| alpha | alphaev[4-8] | alphaev56 | alphaev6[78] | alphapca5[67] \
+	| alpha64 | alpha64ev[4-8] | alpha64ev56 | alpha64ev6[78] | alpha64pca5[67] \
+	| arc | arm | arm[bl]e | arme[lb] | armv[2345] | armv[345][lb] | avr \
+	| c4x | clipper \
+	| d10v | d30v | dlx | dsp16xx \
+	| fr30 | frv \
+	| h8300 | h8500 | hppa | hppa1.[01] | hppa2.0 | hppa2.0[nw] | hppa64 \
+	| i370 | i860 | i960 | ia64 \
+	| ip2k \
+	| m32r | m68000 | m68k | m88k | mcore \
+	| mips | mipsbe | mipseb | mipsel | mipsle \
+	| mips16 \
+	| mips64 | mips64el \
+	| mips64vr | mips64vrel \
+	| mips64orion | mips64orionel \
+	| mips64vr4100 | mips64vr4100el \
+	| mips64vr4300 | mips64vr4300el \
+	| mips64vr5000 | mips64vr5000el \
+	| mipsisa32 | mipsisa32el \
+	| mipsisa32r2 | mipsisa32r2el \
+	| mipsisa64 | mipsisa64el \
+	| mipsisa64sb1 | mipsisa64sb1el \
+	| mipsisa64sr71k | mipsisa64sr71kel \
+	| mipstx39 | mipstx39el \
+	| mn10200 | mn10300 \
+	| msp430 \
+	| ns16k | ns32k \
+	| openrisc | or32 \
+	| pdp10 | pdp11 | pj | pjl \
+	| powerpc | powerpc64 | powerpc64le | powerpcle | ppcbe \
+	| pyramid \
+	| sh | sh[1234] | sh[23]e | sh[34]eb | shbe | shle | sh[1234]le | sh3ele \
+	| sh64 | sh64le \
+	| sparc | sparc64 | sparc86x | sparclet | sparclite | sparcv9 | sparcv9b \
+	| strongarm \
+	| tahoe | thumb | tic4x | tic80 | tron \
+	| v850 | v850e \
+	| we32k \
+	| x86 | xscale | xstormy16 | xtensa \
+	| z8k)
 		basic_machine=$basic_machine-unknown
 		;;
-	m88110 | m680[12346]0 | m683?2 | m68360 | m5200 | z8k | v70 | h8500 | w65)
+	m6811 | m68hc11 | m6812 | m68hc12)
+		# Motorola 68HC11/12.
+		basic_machine=$basic_machine-unknown
+		os=-none
+		;;
+	m88110 | m680[12346]0 | m683?2 | m68360 | m5200 | v70 | w65 | z8k)
 		;;
 
 	# We use `pc' rather than `unknown'
 	# because (1) that's what they normally are, and
 	# (2) the word "unknown" tends to confuse beginning users.
-	i[34567]86)
+	i*86 | x86_64)
 	  basic_machine=$basic_machine-pc
 	  ;;
 	# Object if more than one company name word.
@@ -191,24 +288,60 @@ case $basic_machine in
 		exit 1
 		;;
 	# Recognize the basic CPU types with company name.
-	# FIXME: clean up the formatting here.
-	vax-* | tahoe-* | i[34567]86-* | i860-* | ia64-* | m32r-* | m68k-* | m68000-* \
-	      | m88k-* | sparc-* | ns32k-* | fx80-* | arc-* | arm-* | c[123]* \
-	      | mips-* | pyramid-* | tron-* | a29k-* | romp-* | rs6000-* \
-	      | power-* | none-* | 580-* | cray2-* | h8300-* | h8500-* | i960-* \
-	      | xmp-* | ymp-* \
-	      | hppa-* | hppa1.0-* | hppa1.1-* | hppa2.0-* | hppa2.0w-* | hppa2.0n-* \
-	      | alpha-* | alphaev[4-7]-* | alphaev56-* | alphapca5[67]-* \
-	      | we32k-* | cydra-* | ns16k-* | pn-* | np1-* | xps100-* \
-	      | clipper-* | orion-* \
-	      | sparclite-* | pdp11-* | sh-* | powerpc-* | powerpcle-* \
-	      | sparc64-* | sparcv9-* | sparc86x-* | mips16-* | mips64-* | mipsel-* \
-	      | mips64el-* | mips64orion-* | mips64orionel-* \
-	      | mips64vr4100-* | mips64vr4100el-* | mips64vr4300-* | mips64vr4300el-* \
-	      | mipstx39-* | mipstx39el-* | mcore-* \
-	      | f301-* | armv*-* | t3e-* \
-	      | m88110-* | m680[01234]0-* | m683?2-* | m68360-* | z8k-* | d10v-* \
-	      | thumb-* | v850-* | d30v-* | tic30-* | c30-* )
+	580-* \
+	| a29k-* \
+	| alpha-* | alphaev[4-8]-* | alphaev56-* | alphaev6[78]-* \
+	| alpha64-* | alpha64ev[4-8]-* | alpha64ev56-* | alpha64ev6[78]-* \
+	| alphapca5[67]-* | alpha64pca5[67]-* | arc-* \
+	| arm-*  | armbe-* | armle-* | armeb-* | armv*-* \
+	| avr-* \
+	| bs2000-* \
+	| c[123]* | c30-* | [cjt]90-* | c4x-* | c54x-* | c55x-* | c6x-* \
+	| clipper-* | cydra-* \
+	| d10v-* | d30v-* | dlx-* \
+	| elxsi-* \
+	| f30[01]-* | f700-* | fr30-* | frv-* | fx80-* \
+	| h8300-* | h8500-* \
+	| hppa-* | hppa1.[01]-* | hppa2.0-* | hppa2.0[nw]-* | hppa64-* \
+	| i*86-* | i860-* | i960-* | ia64-* \
+	| ip2k-* \
+	| m32r-* \
+	| m68000-* | m680[012346]0-* | m68360-* | m683?2-* | m68k-* \
+	| m88110-* | m88k-* | mcore-* \
+	| mips-* | mipsbe-* | mipseb-* | mipsel-* | mipsle-* \
+	| mips16-* \
+	| mips64-* | mips64el-* \
+	| mips64vr-* | mips64vrel-* \
+	| mips64orion-* | mips64orionel-* \
+	| mips64vr4100-* | mips64vr4100el-* \
+	| mips64vr4300-* | mips64vr4300el-* \
+	| mips64vr5000-* | mips64vr5000el-* \
+	| mipsisa32-* | mipsisa32el-* \
+	| mipsisa32r2-* | mipsisa32r2el-* \
+	| mipsisa64-* | mipsisa64el-* \
+	| mipsisa64sb1-* | mipsisa64sb1el-* \
+	| mipsisa64sr71k-* | mipsisa64sr71kel-* \
+	| mipstx39-* | mipstx39el-* \
+	| msp430-* \
+	| none-* | np1-* | nv1-* | ns16k-* | ns32k-* \
+	| orion-* \
+	| pdp10-* | pdp11-* | pj-* | pjl-* | pn-* | power-* \
+	| powerpc-* | powerpc64-* | powerpc64le-* | powerpcle-* | ppcbe-* \
+	| pyramid-* \
+	| romp-* | rs6000-* \
+	| sh-* | sh[1234]-* | sh[23]e-* | sh[34]eb-* | shbe-* \
+	| shle-* | sh[1234]le-* | sh3ele-* | sh64-* | sh64le-* \
+	| sparc-* | sparc64-* | sparc86x-* | sparclet-* | sparclite-* \
+	| sparcv9-* | sparcv9b-* | strongarm-* | sv1-* | sx?-* \
+	| tahoe-* | thumb-* \
+	| tic30-* | tic4x-* | tic54x-* | tic55x-* | tic6x-* | tic80-* \
+	| tron-* \
+	| v850-* | v850e-* | vax-* \
+	| we32k-* \
+	| x86-* | x86_64-* | xps100-* | xscale-* | xstormy16-* \
+	| xtensa-* \
+	| ymp-* \
+	| z8k-*)
 		;;
 	# Recognize the various machine names and aliases which stand
 	# for a CPU type and a company and sometimes even an OS.
@@ -240,19 +373,22 @@ case $basic_machine in
 		basic_machine=a29k-none
 		os=-bsd
 		;;
+	amd64)
+		basic_machine=x86_64-pc
+		;;
 	amdahl)
 		basic_machine=580-amdahl
 		os=-sysv
 		;;
 	amiga | amiga-*)
-		basic_machine=m68k-cbm
+		basic_machine=m68k-unknown
 		;;
 	amigaos | amigados)
-		basic_machine=m68k-cbm
+		basic_machine=m68k-unknown
 		os=-amigaos
 		;;
 	amigaunix | amix)
-		basic_machine=m68k-cbm
+		basic_machine=m68k-unknown
 		os=-sysv4
 		;;
 	apollo68)
@@ -271,6 +407,10 @@ case $basic_machine in
 		basic_machine=ns32k-sequent
 		os=-dynix
 		;;
+	c90)
+		basic_machine=c90-cray
+		os=-unicos
+		;;
 	convex-c1)
 		basic_machine=c1-convex
 		os=-bsd
@@ -291,27 +431,30 @@ case $basic_machine in
 		basic_machine=c38-convex
 		os=-bsd
 		;;
-	cray | ymp)
-		basic_machine=ymp-cray
-		os=-unicos
-		;;
-	cray2)
-		basic_machine=cray2-cray
-		os=-unicos
-		;;
-	[ctj]90-cray)
-		basic_machine=c90-cray
+	cray | j90)
+		basic_machine=j90-cray
 		os=-unicos
 		;;
 	crds | unos)
 		basic_machine=m68k-crds
 		;;
+	cris | cris-* | etrax*)
+		basic_machine=cris-axis
+		;;
 	da30 | da30-*)
 		basic_machine=m68k-da30
 		;;
 	decstation | decstation-3100 | pmax | pmax-* | pmin | dec3100 | decstatn)
 		basic_machine=mips-dec
 		;;
+	decsystem10* | dec10*)
+		basic_machine=pdp10-dec
+		os=-tops10
+		;;
+	decsystem20* | dec20*)
+		basic_machine=pdp10-dec
+		os=-tops20
+		;;
 	delta | 3300 | motorola-3300 | motorola-delta \
 	      | 3300-motorola | delta-motorola)
 		basic_machine=m68k-motorola
@@ -353,6 +496,10 @@ case $basic_machine in
 		basic_machine=tron-gmicro
 		os=-sysv
 		;;
+	go32)
+		basic_machine=i386-pc
+		os=-go32
+		;;
 	h3050r* | hiux*)
 		basic_machine=hppa1.1-hitachi
 		os=-hiuxwe2
@@ -426,22 +573,21 @@ case $basic_machine in
 		;;
 	i370-ibm* | ibm*)
 		basic_machine=i370-ibm
-		os=-mvs
 		;;
 # I'm not sure what "Sysv32" means.  Should this be sysv3.2?
-	i[34567]86v32)
+	i*86v32)
 		basic_machine=`echo $1 | sed -e 's/86.*/86-pc/'`
 		os=-sysv32
 		;;
-	i[34567]86v4*)
+	i*86v4*)
 		basic_machine=`echo $1 | sed -e 's/86.*/86-pc/'`
 		os=-sysv4
 		;;
-	i[34567]86v)
+	i*86v)
 		basic_machine=`echo $1 | sed -e 's/86.*/86-pc/'`
 		os=-sysv
 		;;
-	i[34567]86sol2)
+	i*86sol2)
 		basic_machine=`echo $1 | sed -e 's/86.*/86-pc/'`
 		os=-solaris2
 		;;
@@ -453,14 +599,6 @@ case $basic_machine in
 		basic_machine=i386-unknown
 		os=-vsta
 		;;
-	i386-go32 | go32)
-		basic_machine=i386-unknown
-		os=-go32
-		;;
-	i386-mingw32 | mingw32)
-		basic_machine=i386-unknown
-		os=-mingw32
-		;;
 	iris | iris4d)
 		basic_machine=mips-sgi
 		case $os in
@@ -486,35 +624,43 @@ case $basic_machine in
 		basic_machine=ns32k-utek
 		os=-sysv
 		;;
+	mingw32)
+		basic_machine=i386-pc
+		os=-mingw32
+		;;
 	miniframe)
 		basic_machine=m68000-convergent
 		;;
-	*mint | *MiNT)
+	*mint | -mint[0-9]* | *MiNT | *MiNT[0-9]*)
 		basic_machine=m68k-atari
 		os=-mint
 		;;
-	mipsel*-linux*)
-		basic_machine=mipsel-unknown
-		os=-linux-gnu
-		;;
-	mips*-linux*)
-		basic_machine=mips-unknown
-		os=-linux-gnu
-		;;
 	mips3*-*)
 		basic_machine=`echo $basic_machine | sed -e 's/mips3/mips64/'`
 		;;
 	mips3*)
 		basic_machine=`echo $basic_machine | sed -e 's/mips3/mips64/'`-unknown
 		;;
+	mmix*)
+		basic_machine=mmix-knuth
+		os=-mmixware
+		;;
 	monitor)
 		basic_machine=m68k-rom68k
 		os=-coff
 		;;
+	morphos)
+		basic_machine=powerpc-unknown
+		os=-morphos
+		;;
 	msdos)
-		basic_machine=i386-unknown
+		basic_machine=i386-pc
 		os=-msdos
 		;;
+	mvs)
+		basic_machine=i370-ibm
+		os=-mvs
+		;;
 	ncr3000)
 		basic_machine=i486-ncr
 		os=-sysv4
@@ -524,7 +670,7 @@ case $basic_machine in
 		os=-netbsd
 		;;
 	netwinder)
-		basic_machine=armv4l-corel
+		basic_machine=armv4l-rebel
 		os=-linux
 		;;
 	news | news700 | news800 | news900)
@@ -572,13 +718,28 @@ case $basic_machine in
 		basic_machine=i960-intel
 		os=-mon960
 		;;
+	nonstopux)
+		basic_machine=mips-compaq
+		os=-nonstopux
+		;;
 	np1)
 		basic_machine=np1-gould
 		;;
+	nv1)
+		basic_machine=nv1-cray
+		os=-unicosmp
+		;;
+	nsr-tandem)
+		basic_machine=nsr-tandem
+		;;
 	op50n-* | op60c-*)
 		basic_machine=hppa1.1-oki
 		os=-proelf
 		;;
+	or32 | or32-*)
+		basic_machine=or32-unknown
+		os=-coff
+		;;
 	OSE68000 | ose68000)
 		basic_machine=m68000-ericsson
 		os=-ose
@@ -601,45 +762,65 @@ case $basic_machine in
 	pbb)
 		basic_machine=m68k-tti
 		;;
-        pc532 | pc532-*)
+	pc532 | pc532-*)
 		basic_machine=ns32k-pc532
 		;;
-	pentium | p5 | k5 | k6 | nexen)
+	pentium | p5 | k5 | k6 | nexgen | viac3)
 		basic_machine=i586-pc
 		;;
-	pentiumpro | p6 | 6x86)
+	pentiumpro | p6 | 6x86 | athlon | athlon_*)
 		basic_machine=i686-pc
 		;;
-	pentiumii | pentium2)
+	pentiumii | pentium2 | pentiumiii | pentium3)
+		basic_machine=i686-pc
+		;;
+	pentium4)
 		basic_machine=i786-pc
 		;;
-	pentium-* | p5-* | k5-* | k6-* | nexen-*)
+	pentium-* | p5-* | k5-* | k6-* | nexgen-* | viac3-*)
 		basic_machine=i586-`echo $basic_machine | sed 's/^[^-]*-//'`
 		;;
-	pentiumpro-* | p6-* | 6x86-*)
+	pentiumpro-* | p6-* | 6x86-* | athlon-*)
 		basic_machine=i686-`echo $basic_machine | sed 's/^[^-]*-//'`
 		;;
-	pentiumii-* | pentium2-*)
+	pentiumii-* | pentium2-* | pentiumiii-* | pentium3-*)
+		basic_machine=i686-`echo $basic_machine | sed 's/^[^-]*-//'`
+		;;
+	pentium4-*)
 		basic_machine=i786-`echo $basic_machine | sed 's/^[^-]*-//'`
 		;;
 	pn)
 		basic_machine=pn-gould
 		;;
-	power)	basic_machine=rs6000-ibm
+	power)	basic_machine=power-ibm
 		;;
 	ppc)	basic_machine=powerpc-unknown
-	        ;;
+		;;
 	ppc-*)	basic_machine=powerpc-`echo $basic_machine | sed 's/^[^-]*-//'`
 		;;
 	ppcle | powerpclittle | ppc-le | powerpc-little)
 		basic_machine=powerpcle-unknown
-	        ;;
+		;;
 	ppcle-* | powerpclittle-*)
 		basic_machine=powerpcle-`echo $basic_machine | sed 's/^[^-]*-//'`
 		;;
+	ppc64)	basic_machine=powerpc64-unknown
+		;;
+	ppc64-*) basic_machine=powerpc64-`echo $basic_machine | sed 's/^[^-]*-//'`
+		;;
+	ppc64le | powerpc64little | ppc64-le | powerpc64-little)
+		basic_machine=powerpc64le-unknown
+		;;
+	ppc64le-* | powerpc64little-*)
+		basic_machine=powerpc64le-`echo $basic_machine | sed 's/^[^-]*-//'`
+		;;
 	ps2)
 		basic_machine=i386-ibm
 		;;
+	pw32)
+		basic_machine=i586-unknown
+		os=-pw32
+		;;
 	rom68k)
 		basic_machine=m68k-rom68k
 		os=-coff
@@ -650,10 +831,26 @@ case $basic_machine in
 	rtpc | rtpc-*)
 		basic_machine=romp-ibm
 		;;
+	s390 | s390-*)
+		basic_machine=s390-ibm
+		;;
+	s390x | s390x-*)
+		basic_machine=s390x-ibm
+		;;
 	sa29200)
 		basic_machine=a29k-amd
 		os=-udi
 		;;
+	sb1)
+		basic_machine=mipsisa64sb1-unknown
+		;;
+	sb1el)
+		basic_machine=mipsisa64sb1el-unknown
+		;;
+	sei)
+		basic_machine=mips-sei
+		os=-seiux
+		;;
 	sequent)
 		basic_machine=i386-sequent
 		;;
@@ -661,7 +858,10 @@ case $basic_machine in
 		basic_machine=sh-hitachi
 		os=-hms
 		;;
-	sparclite-wrs)
+	sh64)
+		basic_machine=sh64-unknown
+		;;
+	sparclite-wrs | simso-wrs)
 		basic_machine=sparclite-wrs
 		os=-vxworks
 		;;
@@ -719,20 +919,44 @@ case $basic_machine in
 	sun386 | sun386i | roadrunner)
 		basic_machine=i386-sun
 		;;
+	sv1)
+		basic_machine=sv1-cray
+		os=-unicos
+		;;
 	symmetry)
 		basic_machine=i386-sequent
 		os=-dynix
 		;;
 	t3e)
-		basic_machine=t3e-cray
+		basic_machine=alphaev5-cray
 		os=-unicos
 		;;
+	t90)
+		basic_machine=t90-cray
+		os=-unicos
+		;;
+	tic54x | c54x*)
+		basic_machine=tic54x-unknown
+		os=-coff
+		;;
+	tic55x | c55x*)
+		basic_machine=tic55x-unknown
+		os=-coff
+		;;
+	tic6x | c6x*)
+		basic_machine=tic6x-unknown
+		os=-coff
+		;;
 	tx39)
 		basic_machine=mipstx39-unknown
 		;;
 	tx39el)
 		basic_machine=mipstx39el-unknown
 		;;
+	toad1)
+		basic_machine=pdp10-xkl
+		os=-tops20
+		;;
 	tower | tower-32)
 		basic_machine=m68k-ncr
 		;;
@@ -757,8 +981,8 @@ case $basic_machine in
 		os=-vms
 		;;
 	vpp*|vx|vx-*)
-               basic_machine=f301-fujitsu
-               ;;
+		basic_machine=f301-fujitsu
+		;;
 	vxworks960)
 		basic_machine=i960-wrs
 		os=-vxworks
@@ -779,13 +1003,13 @@ case $basic_machine in
 		basic_machine=hppa1.1-winbond
 		os=-proelf
 		;;
-	xmp)
-		basic_machine=xmp-cray
-		os=-unicos
-		;;
-        xps | xps100)
+	xps | xps100)
 		basic_machine=xps100-honeywell
 		;;
+	ymp)
+		basic_machine=ymp-cray
+		os=-unicos
+		;;
 	z8k-*-coff)
 		basic_machine=z8k-unknown
 		os=-sim
@@ -806,13 +1030,6 @@ case $basic_machine in
 	op60c)
 		basic_machine=hppa1.1-oki
 		;;
-	mips)
-		if [ x$os = x-linux-gnu ]; then
-			basic_machine=mips-unknown
-		else
-			basic_machine=mips-mips
-		fi
-		;;
 	romp)
 		basic_machine=romp-ibm
 		;;
@@ -822,16 +1039,26 @@ case $basic_machine in
 	vax)
 		basic_machine=vax-dec
 		;;
+	pdp10)
+		# there are many clones, so DEC is not a safe bet
+		basic_machine=pdp10-unknown
+		;;
 	pdp11)
 		basic_machine=pdp11-dec
 		;;
 	we32k)
 		basic_machine=we32k-att
 		;;
-	sparc | sparcv9)
+	sh3 | sh4 | sh[34]eb | sh[1234]le | sh[23]ele)
+		basic_machine=sh-unknown
+		;;
+	sh64)
+		basic_machine=sh64-unknown
+		;;
+	sparc | sparcv9 | sparcv9b)
 		basic_machine=sparc-sun
 		;;
-        cydra)
+	cydra)
 		basic_machine=cydra-cydrome
 		;;
 	orion)
@@ -846,9 +1073,8 @@ case $basic_machine in
 	pmac | pmac-mpw)
 		basic_machine=powerpc-apple
 		;;
-	c4x*)
-		basic_machine=c4x-none
-		os=-coff
+	*-unknown)
+		# Make sure to match an already-canonicalized machine name.
 		;;
 	*)
 		echo Invalid configuration \`$1\': machine \`$basic_machine\' not recognized 1>&2
@@ -906,14 +1132,34 @@ case $os in
 	      | -lynxos* | -bosx* | -nextstep* | -cxux* | -aout* | -elf* | -oabi* \
 	      | -ptx* | -coff* | -ecoff* | -winnt* | -domain* | -vsta* \
 	      | -udi* | -eabi* | -lites* | -ieee* | -go32* | -aux* \
+	      | -chorusos* | -chorusrdb* \
 	      | -cygwin* | -pe* | -psos* | -moss* | -proelf* | -rtems* \
 	      | -mingw32* | -linux-gnu* | -uxpv* | -beos* | -mpeix* | -udk* \
-	      | -interix* | -uwin* | -rhapsody* | -openstep* | -oskit*)
+	      | -interix* | -uwin* | -mks* | -rhapsody* | -darwin* | -opened* \
+	      | -openstep* | -oskit* | -conix* | -pw32* | -nonstopux* \
+	      | -storm-chaos* | -tops10* | -tenex* | -tops20* | -its* \
+	      | -os2* | -vos* | -palmos* | -uclinux* | -nucleus* \
+	      | -morphos* | -superux* | -rtmk* | -rtmk-nova* | -windiss* \
+	      | -powermax* | -dnix* | -nx6 | -nx7 | -sei*)
 	# Remember, each alternative MUST END IN *, to match a version number.
 		;;
+	-qnx*)
+		case $basic_machine in
+		    x86-* | i*86-*)
+			;;
+		    *)
+			os=-nto$os
+			;;
+		esac
+		;;
+	-nto-qnx*)
+		;;
+	-nto*)
+		os=`echo $os | sed -e 's|nto|nto-qnx|'`
+		;;
 	-sim | -es1800* | -hms* | -xray | -os68k* | -none* | -v88r* \
 	      | -windows* | -osx | -abug | -netware* | -os9* | -beos* \
-	      | -macos* | -mpw* | -magic* | -mon960* | -lnews*)
+	      | -macos* | -mpw* | -magic* | -mmixware* | -mon960* | -lnews*)
 		;;
 	-mac*)
 		os=`echo $os | sed -e 's|mac|macos|'`
@@ -927,6 +1173,12 @@ case $os in
 	-sunos6*)
 		os=`echo $os | sed -e 's|sunos6|solaris3|'`
 		;;
+	-opened*)
+		os=-openedition
+		;;
+	-wince*)
+		os=-wince
+		;;
 	-osfrose*)
 		os=-osfrose
 		;;
@@ -942,14 +1194,23 @@ case $os in
 	-acis*)
 		os=-aos
 		;;
+	-atheos*)
+		os=-atheos
+		;;
 	-386bsd)
 		os=-bsd
 		;;
 	-ctix* | -uts*)
 		os=-sysv
 		;;
+	-nova*)
+		os=-rtmk-nova
+		;;
 	-ns2 )
-	        os=-nextstep2
+		os=-nextstep2
+		;;
+	-nsk*)
+		os=-nsk
 		;;
 	# Preserve the version number of sinix5.
 	-sinix5.*)
@@ -985,8 +1246,14 @@ case $os in
 	-xenix)
 		os=-xenix
 		;;
-        -*mint | -*MiNT)
-	        os=-mint
+	-*mint | -mint[0-9]* | -*MiNT | -MiNT[0-9]*)
+		os=-mint
+		;;
+	-aros*)
+		os=-aros
+		;;
+	-kaos*)
+		os=-kaos
 		;;
 	-none)
 		;;
@@ -1013,13 +1280,20 @@ case $basic_machine in
 	*-acorn)
 		os=-riscix1.2
 		;;
-	arm*-corel)
+	arm*-rebel)
 		os=-linux
 		;;
 	arm*-semi)
 		os=-aout
 		;;
-        pdp11-*)
+    c4x-* | tic4x-*)
+        os=-coff
+        ;;
+	# This must come before the *-dec entry.
+	pdp10-*)
+		os=-tops20
+		;;
+	pdp11-*)
 		os=-none
 		;;
 	*-dec | vax-*)
@@ -1046,6 +1320,9 @@ case $basic_machine in
 	mips*-*)
 		os=-elf
 		;;
+	or32-*)
+		os=-coff
+		;;
 	*-tti)	# must be before sparc entry or we get the wrong os.
 		os=-sysv3
 		;;
@@ -1109,25 +1386,25 @@ case $basic_machine in
 	*-next)
 		os=-nextstep3
 		;;
-        *-gould)
+	*-gould)
 		os=-sysv
 		;;
-        *-highlevel)
+	*-highlevel)
 		os=-bsd
 		;;
 	*-encore)
 		os=-bsd
 		;;
-        *-sgi)
+	*-sgi)
 		os=-irix
 		;;
-        *-siemens)
+	*-siemens)
 		os=-sysv4
 		;;
 	*-masscomp)
 		os=-rtu
 		;;
-	f301-fujitsu)
+	f30[01]-fujitsu | f700-fujitsu)
 		os=-uxpv
 		;;
 	*-rom68k)
@@ -1187,13 +1464,13 @@ case $basic_machine in
 			-genix*)
 				vendor=ns
 				;;
-			-mvs*)
+			-mvs* | -opened*)
 				vendor=ibm
 				;;
 			-ptx*)
 				vendor=sequent
 				;;
-			-vxsim* | -vxworks*)
+			-vxsim* | -vxworks* | -windiss*)
 				vendor=wrs
 				;;
 			-aux*)
@@ -1205,12 +1482,23 @@ case $basic_machine in
 			-mpw* | -macos*)
 				vendor=apple
 				;;
-			-*mint | -*MiNT)
+			-*mint | -mint[0-9]* | -*MiNT | -MiNT[0-9]*)
 				vendor=atari
 				;;
+			-vos*)
+				vendor=stratus
+				;;
 		esac
 		basic_machine=`echo $basic_machine | sed "s/unknown/$vendor/"`
 		;;
 esac
 
 echo $basic_machine$os
+exit 0
+
+# Local variables:
+# eval: (add-hook 'write-file-hooks 'time-stamp)
+# time-stamp-start: "timestamp='"
+# time-stamp-format: "%:y-%02m-%02d"
+# time-stamp-end: "'"
+# End:

autoconf/install-sh

@@ -1,19 +1,38 @@
 #!/bin/sh
-#
 # install - install a program, script, or datafile
-# This comes from X11R5 (mit/util/scripts/install.sh).
+
+scriptversion=2003-06-13.21
+
+# This originates from X11R5 (mit/util/scripts/install.sh), which was
+# later released in X11R6 (xc/config/util/install.sh) with the
+# following copyright and license.
 #
-# Copyright 1991 by the Massachusetts Institute of Technology
+# Copyright (C) 1994 X Consortium
 #
-# Permission to use, copy, modify, distribute, and sell this software and its
-# documentation for any purpose is hereby granted without fee, provided that
-# the above copyright notice appear in all copies and that both that
-# copyright notice and this permission notice appear in supporting
-# documentation, and that the name of M.I.T. not be used in advertising or
-# publicity pertaining to distribution of the software without specific,
-# written prior permission.  M.I.T. makes no representations about the
-# suitability of this software for any purpose.  It is provided "as is"
-# without express or implied warranty.
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to
+# deal in the Software without restriction, including without limitation the
+# rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+# sell copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+#
+# The above copyright notice and this permission notice shall be included in
+# all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
+# X CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+# AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNEC-
+# TION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+#
+# Except as contained in this notice, the name of the X Consortium shall not
+# be used in advertising or otherwise to promote the sale, use or other deal-
+# ings in this Software without prior written authorization from the X Consor-
+# tium.
+#
+#
+# FSF changes to this file are in the public domain.
 #
 # Calling this script install-sh is preferred over install.sh, to prevent
 # `make' implicit rules from creating a file called install from it
@@ -23,13 +42,11 @@
 # from scratch.  It can only install one file at a time, a restriction
 # shared with many OS's install programs.
 
-
 # set DOITPROG to echo to test this script
 
 # Don't use :- since 4.3BSD and earlier shells don't like it.
 doit="${DOITPROG-}"
 
-
 # put in absolute paths if you don't have them in your path; or use env. vars.
 
 mvprog="${MVPROG-mv}"
@@ -41,211 +58,229 @@ stripprog="${STRIPPROG-strip}"
 rmprog="${RMPROG-rm}"
 mkdirprog="${MKDIRPROG-mkdir}"
 
-transformbasename=""
-transform_arg=""
+transformbasename=
+transform_arg=
 instcmd="$mvprog"
 chmodcmd="$chmodprog 0755"
-chowncmd=""
-chgrpcmd=""
-stripcmd=""
+chowncmd=
+chgrpcmd=
+stripcmd=
 rmcmd="$rmprog -f"
 mvcmd="$mvprog"
-src=""
-dst=""
-dir_arg=""
+src=
+dst=
+dir_arg=
 
-while [ x"$1" != x ]; do
-    case $1 in
-	-c) instcmd="$cpprog"
-	    shift
-	    continue;;
+usage="Usage: $0 [OPTION]... SRCFILE DSTFILE
+   or: $0 -d DIR1 DIR2...
 
-	-d) dir_arg=true
-	    shift
-	    continue;;
+In the first form, install SRCFILE to DSTFILE, removing SRCFILE by default.
+In the second, create the directory path DIR.
 
-	-m) chmodcmd="$chmodprog $2"
-	    shift
-	    shift
-	    continue;;
+Options:
+-b=TRANSFORMBASENAME
+-c         copy source (using $cpprog) instead of moving (using $mvprog).
+-d         create directories instead of installing files.
+-g GROUP   $chgrp installed files to GROUP.
+-m MODE    $chmod installed files to MODE.
+-o USER    $chown installed files to USER.
+-s         strip installed files (using $stripprog).
+-t=TRANSFORM
+--help     display this help and exit.
+--version  display version info and exit.
 
-	-o) chowncmd="$chownprog $2"
-	    shift
-	    shift
-	    continue;;
+Environment variables override the default commands:
+  CHGRPPROG CHMODPROG CHOWNPROG CPPROG MKDIRPROG MVPROG RMPROG STRIPPROG
+"
 
-	-g) chgrpcmd="$chgrpprog $2"
-	    shift
-	    shift
-	    continue;;
+while test -n "$1"; do
+  case $1 in
+    -b=*) transformbasename=`echo $1 | sed 's/-b=//'`
+        shift
+        continue;;
 
-	-s) stripcmd="$stripprog"
-	    shift
-	    continue;;
+    -c) instcmd=$cpprog
+        shift
+        continue;;
 
-	-t=*) transformarg=`echo $1 | sed 's/-t=//'`
-	    shift
-	    continue;;
+    -d) dir_arg=true
+        shift
+        continue;;
 
-	-b=*) transformbasename=`echo $1 | sed 's/-b=//'`
-	    shift
-	    continue;;
+    -g) chgrpcmd="$chgrpprog $2"
+        shift
+        shift
+        continue;;
 
-	*)  if [ x"$src" = x ]
-	    then
-		src=$1
-	    else
-		# this colon is to work around a 386BSD /bin/sh bug
-		:
-		dst=$1
-	    fi
-	    shift
-	    continue;;
-    esac
+    --help) echo "$usage"; exit 0;;
+
+    -m) chmodcmd="$chmodprog $2"
+        shift
+        shift
+        continue;;
+
+    -o) chowncmd="$chownprog $2"
+        shift
+        shift
+        continue;;
+
+    -s) stripcmd=$stripprog
+        shift
+        continue;;
+
+    -t=*) transformarg=`echo $1 | sed 's/-t=//'`
+        shift
+        continue;;
+
+    --version) echo "$0 $scriptversion"; exit 0;;
+
+    *)  if test -z "$src"; then
+          src=$1
+        else
+          # this colon is to work around a 386BSD /bin/sh bug
+          :
+          dst=$1
+        fi
+        shift
+        continue;;
+  esac
 done
 
-if [ x"$src" = x ]
-then
-	echo "install:	no input file specified"
-	exit 1
-else
-	true
+if test -z "$src"; then
+  echo "$0: no input file specified." >&2
+  exit 1
 fi
 
-if [ x"$dir_arg" != x ]; then
-	dst=$src
-	src=""
-	
-	if [ -d $dst ]; then
-		instcmd=:
-		chmodcmd=""
-	else
-		instcmd=mkdir
-	fi
+if test -n "$dir_arg"; then
+  dst=$src
+  src=
+
+  if test -d "$dst"; then
+    instcmd=:
+    chmodcmd=
+  else
+    instcmd=$mkdirprog
+  fi
 else
+  # Waiting for this to be detected by the "$instcmd $src $dsttmp" command
+  # might cause directories to be created, which would be especially bad
+  # if $src (and thus $dsttmp) contains '*'.
+  if test ! -f "$src" && test ! -d "$src"; then
+    echo "$0: $src does not exist." >&2
+    exit 1
+  fi
 
-# Waiting for this to be detected by the "$instcmd $src $dsttmp" command
-# might cause directories to be created, which would be especially bad 
-# if $src (and thus $dsttmp) contains '*'.
+  if test -z "$dst"; then
+    echo "$0: no destination specified." >&2
+    exit 1
+  fi
 
-	if [ -f $src -o -d $src ]
-	then
-		true
-	else
-		echo "install:  $src does not exist"
-		exit 1
-	fi
-	
-	if [ x"$dst" = x ]
-	then
-		echo "install:	no destination specified"
-		exit 1
-	else
-		true
-	fi
-
-# If destination is a directory, append the input filename; if your system
-# does not like double slashes in filenames, you may need to add some logic
-
-	if [ -d $dst ]
-	then
-		dst="$dst"/`basename $src`
-	else
-		true
-	fi
+  # If destination is a directory, append the input filename; won't work
+  # if double slashes aren't ignored.
+  if test -d "$dst"; then
+    dst=$dst/`basename "$src"`
+  fi
 fi
 
 ## this sed command emulates the dirname command
-dstdir=`echo $dst | sed -e 's,[^/]*$,,;s,/$,,;s,^$,.,'`
+dstdir=`echo "$dst" | sed -e 's,[^/]*$,,;s,/$,,;s,^$,.,'`
 
 # Make sure that the destination directory exists.
-#  this part is taken from Noah Friedman's mkinstalldirs script
+# (this part is taken from Noah Friedman's mkinstalldirs script.)
 
 # Skip lots of stat calls in the usual case.
-if [ ! -d "$dstdir" ]; then
-defaultIFS='	
-'
-IFS="${IFS-${defaultIFS}}"
+if test ! -d "$dstdir"; then
+  defaultIFS='
+	'
+  IFS="${IFS-$defaultIFS}"
 
-oIFS="${IFS}"
-# Some sh's can't handle IFS=/ for some reason.
-IFS='%'
-set - `echo ${dstdir} | sed -e 's@/@%@g' -e 's@^%@/@'`
-IFS="${oIFS}"
+  oIFS=$IFS
+  # Some sh's can't handle IFS=/ for some reason.
+  IFS='%'
+  set - `echo "$dstdir" | sed -e 's@/@%@g' -e 's@^%@/@'`
+  IFS=$oIFS
 
-pathcomp=''
+  pathcomp=
 
-while [ $# -ne 0 ] ; do
-	pathcomp="${pathcomp}${1}"
-	shift
-
-	if [ ! -d "${pathcomp}" ] ;
-        then
-		$mkdirprog "${pathcomp}"
-	else
-		true
-	fi
-
-	pathcomp="${pathcomp}/"
-done
+  while test $# -ne 0 ; do
+    pathcomp=$pathcomp$1
+    shift
+    test -d "$pathcomp" || $mkdirprog "$pathcomp"
+    pathcomp=$pathcomp/
+  done
 fi
 
-if [ x"$dir_arg" != x ]
-then
-	$doit $instcmd $dst &&
+if test -n "$dir_arg"; then
+  $doit $instcmd "$dst" \
+    && { test -z "$chowncmd" || $doit $chowncmd "$dst"; } \
+    && { test -z "$chgrpcmd" || $doit $chgrpcmd "$dst"; } \
+    && { test -z "$stripcmd" || $doit $stripcmd "$dst"; } \
+    && { test -z "$chmodcmd" || $doit $chmodcmd "$dst"; }
 
-	if [ x"$chowncmd" != x ]; then $doit $chowncmd $dst; else true ; fi &&
-	if [ x"$chgrpcmd" != x ]; then $doit $chgrpcmd $dst; else true ; fi &&
-	if [ x"$stripcmd" != x ]; then $doit $stripcmd $dst; else true ; fi &&
-	if [ x"$chmodcmd" != x ]; then $doit $chmodcmd $dst; else true ; fi
 else
+  # If we're going to rename the final executable, determine the name now.
+  if test -z "$transformarg"; then
+    dstfile=`basename "$dst"`
+  else
+    dstfile=`basename "$dst" $transformbasename \
+             | sed $transformarg`$transformbasename
+  fi
 
-# If we're going to rename the final executable, determine the name now.
+  # don't allow the sed command to completely eliminate the filename.
+  test -z "$dstfile" && dstfile=`basename "$dst"`
 
-	if [ x"$transformarg" = x ] 
-	then
-		dstfile=`basename $dst`
-	else
-		dstfile=`basename $dst $transformbasename | 
-			sed $transformarg`$transformbasename
-	fi
+  # Make a couple of temp file names in the proper directory.
+  dsttmp=$dstdir/_inst.$$_
+  rmtmp=$dstdir/_rm.$$_
 
-# don't allow the sed command to completely eliminate the filename
+  # Trap to clean up those temp files at exit.
+  trap 'status=$?; rm -f "$dsttmp" "$rmtmp" && exit $status' 0
+  trap '(exit $?); exit' 1 2 13 15
 
-	if [ x"$dstfile" = x ] 
-	then
-		dstfile=`basename $dst`
-	else
-		true
-	fi
+  # Move or copy the file name to the temp name
+  $doit $instcmd "$src" "$dsttmp" &&
 
-# Make a temp file name in the proper directory.
+  # and set any options; do chmod last to preserve setuid bits.
+  #
+  # If any of these fail, we abort the whole thing.  If we want to
+  # ignore errors from any of these, just make sure not to ignore
+  # errors from the above "$doit $instcmd $src $dsttmp" command.
+  #
+  { test -z "$chowncmd" || $doit $chowncmd "$dsttmp"; } \
+    && { test -z "$chgrpcmd" || $doit $chgrpcmd "$dsttmp"; } \
+    && { test -z "$stripcmd" || $doit $stripcmd "$dsttmp"; } \
+    && { test -z "$chmodcmd" || $doit $chmodcmd "$dsttmp"; } &&
 
-	dsttmp=$dstdir/#inst.$$#
-
-# Move or copy the file name to the temp name
-
-	$doit $instcmd $src $dsttmp &&
-
-	trap "rm -f ${dsttmp}" 0 &&
-
-# and set any options; do chmod last to preserve setuid bits
-
-# If any of these fail, we abort the whole thing.  If we want to
-# ignore errors from any of these, just make sure not to ignore
-# errors from the above "$doit $instcmd $src $dsttmp" command.
-
-	if [ x"$chowncmd" != x ]; then $doit $chowncmd $dsttmp; else true;fi &&
-	if [ x"$chgrpcmd" != x ]; then $doit $chgrpcmd $dsttmp; else true;fi &&
-	if [ x"$stripcmd" != x ]; then $doit $stripcmd $dsttmp; else true;fi &&
-	if [ x"$chmodcmd" != x ]; then $doit $chmodcmd $dsttmp; else true;fi &&
-
-# Now rename the file to the real destination.
-
-	$doit $rmcmd -f $dstdir/$dstfile &&
-	$doit $mvcmd $dsttmp $dstdir/$dstfile 
+  # Now remove or move aside any old file at destination location.  We
+  # try this two ways since rm can't unlink itself on some systems and
+  # the destination file might be busy for other reasons.  In this case,
+  # the final cleanup might fail but the new file should still install
+  # successfully.
+  {
+    if test -f "$dstdir/$dstfile"; then
+      $doit $rmcmd -f "$dstdir/$dstfile" 2>/dev/null \
+      || $doit $mvcmd -f "$dstdir/$dstfile" "$rmtmp" 2>/dev/null \
+      || {
+	  echo "$0: cannot unlink or rename $dstdir/$dstfile" >&2
+	  (exit 1); exit
+      }
+    else
+      :
+    fi
+  } &&
 
+  # Now rename the file to the real destination.
+  $doit $mvcmd "$dsttmp" "$dstdir/$dstfile"
 fi &&
 
+# The final little trick to "correctly" pass the exit status to the exit trap.
+{
+  (exit 0); exit
+}
 
-exit 0
+# Local variables:
+# eval: (add-hook 'write-file-hooks 'time-stamp)
+# time-stamp-start: "scriptversion="
+# time-stamp-format: "%:y-%02m-%02d.%02H"
+# time-stamp-end: "$"
+# End:

configure.in

@@ -1,30 +1,64 @@
-################################################################################
 ##
-##    Copyright 1999-2000 Sistina Software, Inc.
+## Copyright (C) 2000-2004 Sistina Software, Inc. All rights reserved.
+## Copyright (C) 2004 Red Hat, Inc. All rights reserved.
 ##
-##    This is free software released under the GNU General Public License.
-##    There is no warranty for this software.  See the file COPYING for
-##    details.
+## This file is part of the LVM2.
 ##
-##    See the file CONTRIBUTORS for a list of contributors.
+## This copyrighted material is made available to anyone wishing to use,
+## modify, copy, or redistribute it subject to the terms and conditions
+## of the GNU General Public License v.2.
 ##
-##    This file is maintained by:
-##      AJ Lewis <lewis@sistina.com>
-## 
-##    File name: configure.in
-##
-##    Description: Input file for autoconf.  Generates the configure script 
-##                 that tries to keep everything nice and portable.  It also
-##                 simplifies distribution package building considerably.
+## You should have received a copy of the GNU General Public License
+## along with this program; if not, write to the Free Software Foundation,
+## Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 ################################################################################
 
-dnl Process this file with autoconf to produce a configure script.
+AC_PREREQ(2.53)
+################################################################################
+dnl -- Process this file with autoconf to produce a configure script.
 AC_INIT(lib/device/dev-cache.h)
 
-dnl setup the directory where autoconf has auxilary files
+################################################################################
+dnl -- Setup the directory where autoconf has auxilary files
 AC_CONFIG_AUX_DIR(autoconf) 
 
-dnl Checks for programs.
+################################################################################
+dnl -- Get system type
+AC_CANONICAL_SYSTEM
+
+case "$host_os" in
+	linux*)
+		CFLAGS="$CFLAGS"
+		COPTIMISE_FLAG="-O2"
+		CLDFLAGS="$CLDFLAGS -Wl,--version-script,.export.sym"
+		CLDWHOLEARCHIVE="-Wl,-whole-archive"
+		CLDNOWHOLEARCHIVE="-Wl,-no-whole-archive"
+		LDDEPS="$LDDEPS .export.sym"
+		LDFLAGS="$LDFLAGS -Wl,--export-dynamic"
+		LIB_SUFFIX="so"
+		DEVMAPPER=yes
+		ODIRECT=yes
+		SELINUX=yes
+		CLUSTER=internal
+		FSADM=no ;;
+	darwin*)
+		CFLAGS="$CFLAGS -no-cpp-precomp -fno-common"
+		COPTIMISE_FLAG="-O2"
+		CLDFLAGS="$CLDFLAGS"
+		CLDWHOLEARCHIVE="-all_load"
+		CLDNOWHOLEARCHIVE=
+		LDDEPS="$LDDEPS"
+		LDFLAGS="$LDFLAGS"
+		LIB_SUFFIX="dylib"
+		DEVMAPPER=yes
+		ODIRECT=no
+		SELINUX=no
+		CLUSTER=none
+		FSADM=no ;;
+esac
+
+################################################################################
+dnl -- Checks for programs.
 AC_PROG_AWK
 AC_PROG_CC
 AC_PROG_INSTALL
@@ -32,57 +66,327 @@ AC_PROG_LN_S
 AC_PROG_MAKE_SET
 AC_PROG_RANLIB
 
-dnl Checks for header files.
+################################################################################
+dnl -- Checks for header files.
 AC_HEADER_DIRENT
 AC_HEADER_STDC
-AC_CHECK_HEADERS(fcntl.h malloc.h sys/ioctl.h unistd.h)
+AC_HEADER_SYS_WAIT
+AC_HEADER_TIME
 
-dnl Checks for typedefs, structures, and compiler characteristics.
+AC_CHECK_HEADERS(fcntl.h limits.h locale.h stddef.h syslog.h sys/file.h sys/ioctl.h sys/param.h sys/time.h,,AC_MSG_ERROR(bailing out))
+AC_CHECK_HEADERS(assert.h ctype.h libgen.h signal.h stdio.h sys/mman.h sys/resource.h sys/stat.h sys/types.h sys/utsname.h sys/wait.h time.h,,AC_MSG_ERROR(bailing out))
+
+case "$host_os" in
+	linux*)
+		AC_CHECK_HEADERS(asm/byteorder.h linux/fs.h malloc.h,,AC_MSG_ERROR(bailing out)) ;;
+	darwin*)
+		AC_CHECK_HEADERS(machine/endian.h sys/disk.h,,AC_MSG_ERROR(bailing out)) ;;
+esac
+
+################################################################################
+dnl -- Checks for typedefs, structures, and compiler characteristics.
 AC_C_CONST
 AC_C_INLINE
 AC_TYPE_OFF_T
 AC_TYPE_PID_T
 AC_TYPE_SIZE_T
+AC_TYPE_MODE_T
 AC_STRUCT_ST_RDEV
-AC_HEADER_TIME
+AC_STRUCT_TM
 
-dnl -- prefix is /usr by default, the exec_prefix default is setup later
+################################################################################
+dnl -- Check for functions
+AC_CHECK_FUNCS(gethostname getpagesize memset munmap setlocale strcasecmp strchr strdup strncasecmp strerror strrchr strstr strtol strtoul,,AC_MSG_ERROR(bailing out))
+AC_FUNC_ALLOCA
+AC_FUNC_CLOSEDIR_VOID
+AC_FUNC_FORK
+AC_FUNC_LSTAT
+AC_FUNC_MALLOC
+AC_FUNC_MEMCMP
+AC_FUNC_MMAP
+AC_FUNC_STAT
+AC_FUNC_STRTOD
+
+################################################################################
+dnl -- Prefix is /usr by default, the exec_prefix default is setup later
 AC_PREFIX_DEFAULT(/usr)
 
-dnl -- setup the ownership of the files
+################################################################################
+dnl -- Parallel make jobs?
+AC_ARG_ENABLE(jobs, [  --enable-jobs=NUM       Number of jobs to run simultaneously], JOBS=-j$enableval, JOBS=-j2)
+
+################################################################################
+dnl -- Setup the ownership of the files
+AC_MSG_CHECKING(file owner)
+OWNER="root"
+
 AC_ARG_WITH(user,
   [  --with-user=USER        Set the owner of installed files ],
-  [ OWNER="$withval" ],
-  [ OWNER="root" ])
+  [ OWNER="$withval" ])
+AC_MSG_RESULT($OWNER)
 
-dnl -- setup the group ownership of the files
+if test x$OWNER != x; then
+	OWNER="-o $OWNER"
+fi
+
+################################################################################
+dnl -- Setup the group ownership of the files
+AC_MSG_CHECKING(group owner)
+GROUP="root"
 AC_ARG_WITH(group,
   [  --with-group=GROUP      Set the group owner of installed files ],
-  [ GROUP="$withval" ],
-  [ GROUP="root" ])
+  [ GROUP="$withval" ])
+AC_MSG_RESULT($GROUP)
 
-AC_ARG_ENABLE(jobs, [  --enable-jobs=NUM       Number of jobs to run simultaneously], JOBS=-j$enableval, JOBS=)
+if test x$GROUP != x; then
+	GROUP="-g $GROUP"
+fi
 
-dnl Enables staticly linked tools
-AC_ARG_ENABLE(static_link, [  --enable-static_link    Use this to link the tools to the liblvm library
+################################################################################
+dnl -- LVM1 tool fallback option
+AC_MSG_CHECKING(whether to enable lvm1 fallback)
+AC_ARG_ENABLE(lvm1_fallback, [  --enable-lvm1_fallback  Use this to fall back and use LVM1 binaries if
+                          device-mapper is missing from the kernel],  LVM1_FALLBACK=$enableval, LVM1_FALLBACK=no)
+AC_MSG_RESULT($LVM1_FALLBACK)
+
+if test x$LVM1_FALLBACK = xyes; then
+	CFLAGS="$CFLAGS -DLVM1_FALLBACK"
+fi
+
+################################################################################
+dnl -- format1 inclusion type
+AC_MSG_CHECKING(whether to include support for lvm1 metadata)
+AC_ARG_WITH(lvm1,
+  [  --with-lvm1=TYPE        LVM1 metadata support: internal/shared/none
+                          [TYPE=internal] ],
+  [ LVM1="$withval" ],
+  [ LVM1="internal" ])
+AC_MSG_RESULT($LVM1)
+
+if [[ "x$LVM1" != xnone -a "x$LVM1" != xinternal -a "x$LVM1" != xshared ]];
+ then  AC_MSG_ERROR(
+--with-lvm1 parameter invalid
+)
+fi;
+
+if test x$LVM1 = xinternal; then
+	CFLAGS="$CFLAGS -DLVM1_INTERNAL"
+fi
+
+################################################################################
+dnl -- format_pool inclusion type
+AC_MSG_CHECKING(whether to include support for GFS pool metadata)
+AC_ARG_WITH(pool,
+  [  --with-pool=TYPE        GFS pool read-only support: internal/shared/none
+                          [TYPE=internal] ],
+  [ POOL="$withval" ],
+  [ POOL="internal" ])
+AC_MSG_RESULT($POOL)
+
+if [[ "x$POOL" != xnone -a "x$POOL" != xinternal -a "x$POOL" != xshared ]];
+ then  AC_MSG_ERROR(
+--with-pool parameter invalid
+)
+fi;
+
+if test x$POOL = xinternal; then
+	CFLAGS="$CFLAGS -DPOOL_INTERNAL"
+fi
+
+################################################################################
+dnl -- cluster_locking inclusion type
+AC_MSG_CHECKING(whether to include support for cluster locking)
+AC_ARG_WITH(cluster,
+  [  --with-cluster=TYPE     Cluster LVM locking support: internal/shared/none
+                          [TYPE=internal] ],
+  [ CLUSTER="$withval" ])
+AC_MSG_RESULT($CLUSTER)
+
+if [[ "x$CLUSTER" != xnone -a "x$CLUSTER" != xinternal -a "x$CLUSTER" != xshared ]];
+ then  AC_MSG_ERROR(
+--with-cluster parameter invalid
+)
+fi;
+
+if test x$CLUSTER = xinternal; then
+	CFLAGS="$CFLAGS -DCLUSTER_LOCKING_INTERNAL"
+fi
+
+################################################################################
+dnl -- snapshots inclusion type
+AC_MSG_CHECKING(whether to include snapshots)
+AC_ARG_WITH(snapshots,
+  [  --with-snapshots=TYPE   Snapshot support: internal/shared/none
+                          [TYPE=internal] ],
+  [ SNAPSHOTS="$withval" ],
+  [ SNAPSHOTS="internal" ])
+AC_MSG_RESULT($SNAPSHOTS)
+
+if [[ "x$SNAPSHOTS" != xnone -a "x$SNAPSHOTS" != xinternal -a "x$SNAPSHOTS" != xshared ]];
+ then  AC_MSG_ERROR(
+--with-snapshots parameter invalid
+)
+fi;
+
+if test x$SNAPSHOTS = xinternal; then
+	CFLAGS="$CFLAGS -DSNAPSHOT_INTERNAL"
+fi
+
+################################################################################
+dnl -- mirrors inclusion type
+AC_MSG_CHECKING(whether to include mirrors)
+AC_ARG_WITH(mirrors,
+  [  --with-mirrors=TYPE     Mirror support: internal/shared/none
+                          [TYPE=internal] ],
+  [ MIRRORS="$withval" ],
+  [ MIRRORS="internal" ])
+AC_MSG_RESULT($MIRRORS)
+
+if [[ "x$MIRRORS" != xnone -a "x$MIRRORS" != xinternal -a "x$MIRRORS" != xshared ]];
+ then  AC_MSG_ERROR(
+--with-mirrors parameter invalid
+)
+fi;
+
+if test x$MIRRORS = xinternal; then
+	CFLAGS="$CFLAGS -DMIRRORED_INTERNAL"
+fi
+
+################################################################################
+dnl -- Enables staticly-linked tools
+AC_MSG_CHECKING(whether to use static linking)
+AC_ARG_ENABLE(static_link, [  --enable-static_link    Use this to link the tools to their libraries
                           statically.  Default is dynamic linking],  STATIC_LINK=$enableval, STATIC_LINK=no)
+AC_MSG_RESULT($STATIC_LINK)
 
-dnl Disable readline
-AC_ARG_ENABLE(readline, [  --disable-readline      Disable readline support],  \
-READLINE=$enableval, READLINE=yes)
+################################################################################
+dnl -- Enable readline
+AC_MSG_CHECKING(whether to enable readline)
+AC_ARG_ENABLE(readline, [  --enable-readline       Enable readline support],
+READLINE=$enableval, READLINE=no)
+AC_MSG_RESULT($READLINE)
 
-dnl Mess with default exec_prefix
+if test x$READLINE = xyes; then
+	CFLAGS="$CFLAGS -DREADLINE_SUPPORT"
+fi
+
+################################################################################
+dnl -- Disable selinux
+AC_MSG_CHECKING(whether to enable selinux support)
+AC_ARG_ENABLE(selinux, [  --disable-selinux       Disable selinux support],
+SELINUX=$enableval)
+AC_MSG_RESULT($SELINUX)
+
+################################################################################
+dnl -- Build cluster LVM daemon
+AC_MSG_CHECKING(whether to build cluster LVM daemon)
+AC_ARG_WITH(clvmd,
+  [  --with-clvmd=TYPE       Build cluster LVM Daemon: cman/gulm/none/all
+                          [TYPE=none] ],
+  [ CLVMD="$withval" ],
+  [ CLVMD="none" ])
+if test x$CLVMD = xyes; then
+	CLVMD=all
+fi
+AC_MSG_RESULT($CLVMD)
+
+dnl -- If clvmd enabled without cluster locking, automagically include it
+if  test x$CLVMD != xnone && test x$CLUSTER = xnone; then
+	CLUSTER=internal
+fi
+
+################################################################################
+dnl -- Enable debugging
+AC_MSG_CHECKING(whether to enable debugging)
+AC_ARG_ENABLE(debug,    [  --enable-debug          Enable debugging],
+DEBUG=$enableval, DEBUG=no)
+AC_MSG_RESULT($DEBUG)
+
+dnl -- Normally turn off optimisation for debug builds
+if test x$DEBUG = xyes; then
+	COPTIMISE_FLAG=
+fi
+
+################################################################################
+dnl -- Override optimisation
+AC_MSG_CHECKING(for C optimisation flag)
+AC_ARG_WITH(optimisation,
+  [  --with-optimisation=OPT C optimisation flag [OPT=-O2] ],
+  [ COPTIMISE_FLAG="$withval" ])
+AC_MSG_RESULT($COPTIMISE_FLAG)
+
+################################################################################
+dnl -- Disable devmapper
+AC_MSG_CHECKING(whether to use device-mapper)
+AC_ARG_ENABLE(devmapper, [  --disable-devmapper     Disable device-mapper interaction],
+DEVMAPPER=$enableval)
+AC_MSG_RESULT($DEVMAPPER)
+
+if test x$DEVMAPPER = xyes; then
+	CFLAGS="$CFLAGS -DDEVMAPPER_SUPPORT"
+fi
+
+################################################################################
+dnl -- Disable O_DIRECT
+AC_MSG_CHECKING(whether to enable O_DIRECT)
+AC_ARG_ENABLE(o_direct, [  --disable-o_direct      Disable O_DIRECT],
+ODIRECT=$enableval)
+AC_MSG_RESULT($ODIRECT)
+
+if test x$ODIRECT = xyes; then
+	CFLAGS="$CFLAGS -DO_DIRECT_SUPPORT"
+fi
+
+################################################################################
+dnl -- Enable cmdlib
+AC_MSG_CHECKING(whether to compile liblvm2cmd.so)
+AC_ARG_ENABLE(cmdlib, [  --enable-cmdlib         Build shared command library],
+CMDLIB=$enableval, CMDLIB=no)
+AC_MSG_RESULT($CMDLIB)
+
+if test x$CMDLIB = xyes; then
+	CFLAGS="$CFLAGS -DCMDLIB"
+fi
+
+################################################################################
+dnl -- Enable fsadm
+AC_MSG_CHECKING(whether to build fsadm)
+AC_ARG_ENABLE(fsadm, [  --enable-fsadm          Enable fsadm],
+FSADM=$enableval)
+AC_MSG_RESULT($FSADM)
+
+################################################################################
+dnl -- enable dmeventd handling
+AC_MSG_CHECKING(whether to use dmeventd)
+AC_ARG_ENABLE(dmeventd, [  --enable-dmeventd       Enable the device-mapper event daemon],
+DMEVENTD=$enableval)
+AC_MSG_RESULT($DMEVENTD)
+
+dnl -- dmeventd currently requires internal mirror support
+if test x$DMEVENTD = xyes && test x$MIRRORS != xinternal; then
+AC_MSG_ERROR(
+--enable-dmeventd currently requires --with-mirrors=internal
+)
+fi
+
+if test x$DMEVENTD = xyes; then
+	CFLAGS="$CFLAGS -DDMEVENTD"
+fi
+################################################################################
+dnl -- Mess with default exec_prefix
 if [[ "x$exec_prefix" = xNONE -a "x$prefix" = xNONE ]];
  then  exec_prefix="";
 fi;
 
-dnl Checks for library functions.
+################################################################################
+dnl -- Checks for library functions.
 AC_PROG_GCC_TRADITIONAL
 AC_TYPE_SIGNAL
 AC_FUNC_VPRINTF
-AC_CHECK_FUNCS(mkdir rmdir uname)
+AC_CHECK_FUNCS(mkdir rmdir uname,,AC_MSG_ERROR(bailing out))
 
-dnl check for termcap (Shamelessly copied from parted 1.4.17)
+################################################################################
+dnl -- Check for termcap (Shamelessly copied from parted 1.4.17)
 if test x$READLINE = xyes; then
 	AC_SEARCH_LIBS(tgetent, ncurses curses termcap termlib, ,
 		AC_MSG_ERROR(
@@ -95,11 +399,51 @@ Note: if you are using precompiled packages you will also need the development
 Note: (n)curses also seems to work as a substitute for termcap.  This was
   not found either - but you could try installing that as well.
 )
-	exit
 	)
 fi
 
-dnl Check for readline (Shamelessly copied from parted 1.4.17)
+################################################################################
+dnl -- Check for dlopen
+AC_CHECK_LIB(dl, dlopen, HAVE_LIBDL=yes, HAVE_LIBDL=no)
+
+if [[ "x$HAVE_LIBDL" = xyes ]]; then
+	CFLAGS="$CFLAGS -DHAVE_LIBDL"
+	LIBS="-ldl $LIBS"
+else
+	HAVE_LIBDL=no
+fi
+
+################################################################################
+dnl -- Check for shared/static conflicts
+if [[ \( "x$LVM1" = xshared -o "x$POOL" = xshared -o "x$CLUSTER" = xshared \
+      -o "x$SNAPSHOTS" = xshared -o "x$MIRRORS" = xshared \
+      \) -a "x$STATIC_LINK" = xyes ]];
+ then  AC_MSG_ERROR(
+Features cannot be 'shared' when building statically
+)
+fi
+
+################################################################################
+dnl -- Check for is_selinux_enabled
+if test x$SELINUX = xyes; then
+	AC_MSG_CHECKING(for is_selinux_enabled function)
+	AC_CHECK_LIB(selinux, is_selinux_enabled, HAVE_SELINUX=yes, HAVE_SELINUX=no)
+	AC_MSG_RESULT($HAVE_SELINUX)
+
+	if test x$HAVE_SELINUX = xyes; then
+		CFLAGS="$CFLAGS -DHAVE_SELINUX"
+		LIBS="-lselinux $LIBS"
+	else
+		AC_MSG_WARN(Disabling selinux)
+	fi
+fi
+
+################################################################################
+dnl -- Check for getopt
+AC_CHECK_HEADERS(getopt.h, CFLAGS="$CFLAGS -DHAVE_GETOPTLONG")
+
+################################################################################
+dnl -- Check for readline (Shamelessly copied from parted 1.4.17)
 if test x$READLINE = xyes; then
 	AC_CHECK_LIB(readline, readline, ,
 		AC_MSG_ERROR(
@@ -110,39 +454,172 @@ support with --disable-readline or download and install readline from:
 Note: if you are using precompiled packages you will also need the development
 package as well (which may be called readline-devel or something similar).
 )
-		exit
 	)
-	AC_CHECK_FUNC(rl_completion_matches, HAVE_RL_COMPLETION_MATCHES=yes,
-		HAVE_RL_COMPLETION_MATCHES=no)
+	AC_CHECK_FUNC(rl_completion_matches, CFLAGS="$CFLAGS -DHAVE_RL_COMPLETION_MATCHES")
+		
 fi
 
+################################################################################
+dnl -- Internationalisation stuff
+AC_MSG_CHECKING(whether to enable internationalisation)
+AC_ARG_ENABLE(nls, [  --enable-nls            Enable Native Language Support],
+		INTL=$enableval, INTL=no)
+AC_MSG_RESULT($INTL)
+
+if test x$INTL = xyes; then
+	INTL_PACKAGE="lvm2"
+	AC_PATH_PROG(MSGFMT, msgfmt)
+	if [[ "x$MSGFMT" == x ]];
+		then  AC_MSG_ERROR(
+		msgfmt not found in path $PATH
+		)
+	fi;
+
+	AC_ARG_WITH(localedir,
+  		    [  --with-localedir=DIR    Translation files in DIR [PREFIX/share/locale]],
+  		    [ LOCALEDIR="$withval" ],
+  		    [ LOCALEDIR='${prefix}/share/locale' ])
+fi
+
+################################################################################
+AC_ARG_WITH(confdir,
+	    [  --with-confdir=DIR      Configuration files in DIR [/etc]],
+  	    [ CONFDIR="$withval" ],
+ 	    [ CONFDIR='/etc' ])
+
+AC_ARG_WITH(staticdir,
+	    [  --with-staticdir=DIR    Static binary in DIR [EXEC_PREFIX/sbin]],
+  	    [ STATICDIR="$withval" ],
+ 	    [ STATICDIR='${exec_prefix}/sbin' ])
+
+################################################################################
+dnl -- Ensure additional headers required
+if test x$READLINE = xyes; then
+	AC_CHECK_HEADERS(readline/readline.h readline/history.h,,AC_MSG_ERROR(bailing out))
+fi
+
+if test x$CLVMD != xnone; then
+	AC_CHECK_HEADERS(mntent.h netdb.h netinet/in.h pthread.h search.h sys/mount.h sys/socket.h sys/uio.h sys/un.h utmpx.h,,AC_MSG_ERROR(bailing out))
+	AC_CHECK_FUNCS(dup2 getmntent memmove select socket,,AC_MSG_ERROR(bailing out))
+	AC_FUNC_GETMNTENT
+#	AC_FUNC_REALLOC
+	AC_FUNC_SELECT_ARGTYPES
+fi
+
+if test x$FSADM = xyes; then
+	AC_CHECK_HEADERS(fstab.h sys/mount.h sys/vfs.h,,AC_MSG_ERROR(bailing out))
+	AC_CHECK_FUNCS(memmove,,AC_MSG_ERROR(bailing out))
+fi
+
+if test x$CLUSTER != xnone; then
+	AC_CHECK_HEADERS(sys/socket.h sys/un.h,,AC_MSG_ERROR(bailing out))
+	AC_CHECK_FUNCS(socket,,AC_MSG_ERROR(bailing out))
+fi
+
+if test x$HAVE_LIBDL = xyes; then
+	AC_CHECK_HEADERS(dlfcn.h,,AC_MSG_ERROR(bailing out))
+fi
+
+if test x$INTL = xyes; then
+	AC_CHECK_HEADERS(libintl.h,,AC_MSG_ERROR(bailing out))
+fi
+
+if test x$DEVMAPPER = xyes; then
+	AC_CHECK_HEADERS(libdevmapper.h,,AC_MSG_ERROR(bailing out))
+fi
+
+if test x$HAVE_SELINUX = xyes; then
+	AC_CHECK_HEADERS(selinux/selinux.h,,AC_MSG_ERROR(bailing out))
+fi
+
+################################################################################
+AC_PATH_PROG(MODPROBE_CMD, modprobe)
+
+if test x$MODPROBE_CMD != x; then
+	CFLAGS="$CFLAGS -DMODPROBE_CMD=\\\"$MODPROBE_CMD\\\""
+fi
+
+################################################################################
 if test "-f VERSION"; then
   LVM_VERSION="\"`cat VERSION`\""
 else
   LVM_VERSION="Unknown"
 fi
 
+################################################################################
 AC_SUBST(JOBS)
 AC_SUBST(STATIC_LINK)
-AC_SUBST(READLINE)
-AC_SUBST(HAVE_RL_COMPLETION_MATCHES)
+AC_SUBST(LVM1)
+AC_SUBST(POOL)
+AC_SUBST(SNAPSHOTS)
+AC_SUBST(MIRRORS)
 AC_SUBST(OWNER)
 AC_SUBST(GROUP)
+AC_SUBST(CFLAGS)
+AC_SUBST(COPTIMISE_FLAG)
+AC_SUBST(CLDFLAGS)
+AC_SUBST(CLDWHOLEARCHIVE)
+AC_SUBST(CLDNOWHOLEARCHIVE)
+AC_SUBST(LDDEPS)
+AC_SUBST(LDFLAGS)
+AC_SUBST(LIB_SUFFIX)
 AC_SUBST(LIBS)
 AC_SUBST(LVM_VERSION)
-dnl First and last lines should not contain files to generate in order to 
-dnl keep utility scripts running properly
+AC_SUBST(LVM1_FALLBACK)
+AC_SUBST(DEBUG)
+AC_SUBST(DEVMAPPER)
+AC_SUBST(HAVE_LIBDL)
+AC_SUBST(HAVE_SELINUX)
+AC_SUBST(CMDLIB)
+AC_SUBST(MSGFMT)
+AC_SUBST(LOCALEDIR)
+AC_SUBST(CONFDIR)
+AC_SUBST(STATICDIR)
+AC_SUBST(INTL_PACKAGE)
+AC_SUBST(INTL)
+AC_SUBST(CLVMD)
+AC_SUBST(CLUSTER)
+AC_SUBST(FSADM)
+AC_SUBST(DMEVENTD)
+
+################################################################################
+dnl -- First and last lines should not contain files to generate in order to 
+dnl -- keep utility scripts running properly
 AC_OUTPUT( 								\
 Makefile								\
-make.tmpl                                                               \
+make.tmpl								\
+daemons/Makefile							\
+daemons/clvmd/Makefile							\
+dmeventd/Makefile							\
+dmeventd/mirror/Makefile						\
+doc/Makefile								\
 include/Makefile						 	\
 lib/Makefile							 	\
+lib/format1/Makefile						 	\
+lib/format_pool/Makefile						\
+lib/locking/Makefile							\
+lib/mirror/Makefile							\
+lib/snapshot/Makefile							\
 man/Makefile							 	\
+po/Makefile								\
 tools/Makefile							 	\
 tools/version.h								\
+tools/fsadm/Makefile							\
 test/mm/Makefile							\
 test/device/Makefile							\
 test/format1/Makefile							\
 test/regex/Makefile                                                     \
 test/filters/Makefile                                                   \
 )
+
+if test x$ODIRECT != xyes; then
+  AC_MSG_WARN(Warning: O_DIRECT disabled: low-memory pvmove may lock up)
+fi
+
+if test x$FSADM == xyes; then
+  AC_MSG_WARN(fsadm support is untested)
+fi
+
+if test x$DMEVENTD == xyes; then
+  AC_MSG_WARN(dmeventd support is untested)
+fi

daemons/Makefile.in

@@ -0,0 +1,23 @@
+#
+# Copyright (C) 2004 Red Hat, Inc. All rights reserved.
+#
+# This file is part of the LVM2.
+#
+# This copyrighted material is made available to anyone wishing to use,
+# modify, copy, or redistribute it subject to the terms and conditions
+# of the GNU General Public License v.2.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software Foundation,
+# Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+
+srcdir = @srcdir@
+top_srcdir = @top_srcdir@
+VPATH = @srcdir@
+
+ifneq ("@CLVMD@", "none")
+  SUBDIRS = clvmd
+endif
+
+include $(top_srcdir)/make.tmpl
+

daemons/clvmd/Makefile.in

@@ -0,0 +1,85 @@
+#
+# Copyright (C) 2004 Red Hat, Inc. All rights reserved.
+#
+# This file is part of the LVM2.
+#
+# This copyrighted material is made available to anyone wishing to use,
+# modify, copy, or redistribute it subject to the terms and conditions
+# of the GNU General Public License v.2.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software Foundation,
+# Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+
+srcdir = @srcdir@
+top_srcdir = @top_srcdir@
+VPATH = @srcdir@
+
+SOURCES = \
+	clvmd-command.c  \
+	clvmd.c          \
+	lvm-functions.c  \
+	system-lv.c
+
+ifeq ("@CLVMD@", "gulm")
+	GULM = yes
+endif
+
+ifeq ("@CLVMD@", "cman")
+	CMAN = yes
+endif
+
+ifeq ("@CLVMD@", "all")
+	GULM = yes
+	CMAN = yes
+endif
+
+ifeq ("@DEBUG@", "yes")
+	CFLAGS += -DDEBUG
+endif
+
+ifeq ("$(GULM)", "yes")
+	SOURCES += clvmd-gulm.c tcp-comms.c
+	LMLIBS += -lccs -lgulm
+	CFLAGS += -DUSE_GULM
+endif
+
+ifeq ("$(CMAN)", "yes")
+	SOURCES += clvmd-cman.c
+	LMLIBS += -ldlm
+	CFLAGS += -DUSE_CMAN
+endif
+
+TARGETS = \
+	clvmd
+
+LVMLIBS = -llvm
+
+ifeq ("@DMEVENTD@", "yes")
+	LVMLIBS += -ldevmapper-event -lpthread
+endif
+ 
+ifeq ("@DEVMAPPER@", "yes")
+	LVMLIBS += -ldevmapper
+endif
+
+CFLAGS += -D_REENTRANT -fno-strict-aliasing
+
+include $(top_srcdir)/make.tmpl
+
+INSTALL_TARGETS = \
+	install_clvmd
+
+clvmd: $(OBJECTS) $(top_srcdir)/lib/liblvm.a
+	$(CC) -o clvmd $(OBJECTS) $(LDFLAGS) $(LVMLIBS) $(LMLIBS) $(LIBS)
+
+.PHONY: install_clvmd
+
+install_clvmd: $(TARGETS)
+	$(INSTALL) -D $(OWNER) $(GROUP) -m 555 $(STRIP) clvmd \
+		$(sbindir)/clvmd
+
+install: $(INSTALL_TARGETS)
+
+install_cluster: $(INSTALL_TARGETS)
+

daemons/clvmd/clvm.h

@@ -0,0 +1,66 @@
+/*
+ * Copyright (C) 2002-2004 Sistina Software, Inc. All rights reserved.
+ * Copyright (C) 2004 Red Hat, Inc. All rights reserved.
+ *
+ * This file is part of LVM2.
+ *
+ * This copyrighted material is made available to anyone wishing to use,
+ * modify, copy, or redistribute it subject to the terms and conditions
+ * of the GNU General Public License v.2.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+/* Definitions for CLVMD server and clients */
+
+/*
+ * The protocol spoken over the cluster and across the local socket.
+ */
+
+#ifndef _CLVM_H
+#define _CLVM_H
+
+struct clvm_header {
+	uint8_t  cmd;	        /* See below */
+	uint8_t  flags;	        /* See below */
+	uint16_t xid;	        /* Transaction ID */
+	uint32_t clientid;	/* Only used in Daemon->Daemon comms */
+	int32_t  status;	/* For replies, whether request succeeded */
+	uint32_t arglen;	/* Length of argument below. 
+				   If >1500 then it will be passed 
+				   around the cluster in the system LV */
+	char node[1];		/* Actually a NUL-terminated string, node name.
+				   If this is empty then the command is 
+				   forwarded to all cluster nodes unless 
+				   FLAG_LOCAL is also set. */
+	char args[1];		/* Arguments for the command follow the 
+				   node name, This member is only
+				   valid if the node name is empty */
+} __attribute__ ((packed));
+
+/* Flags */
+#define CLVMD_FLAG_LOCAL        1	/* Only do this on the local node */
+#define CLVMD_FLAG_SYSTEMLV     2	/* Data in system LV under my node name */
+#define CLVMD_FLAG_NODEERRS     4       /* Reply has errors in node-specific portion */
+
+/* Name of the local socket to communicate between libclvm and clvmd */
+//static const char CLVMD_SOCKNAME[]="/var/run/clvmd";
+static const char CLVMD_SOCKNAME[] = "\0clvmd";
+
+/* Internal commands & replies */
+#define CLVMD_CMD_REPLY    1
+#define CLVMD_CMD_VERSION  2	/* Send version around cluster when we start */
+#define CLVMD_CMD_GOAWAY   3	/* Die if received this - we are running 
+				   an incompatible version */
+#define CLVMD_CMD_TEST     4	/* Just for mucking about */
+
+#define CLVMD_CMD_LOCK              30
+#define CLVMD_CMD_UNLOCK            31
+
+/* Lock/Unlock commands */
+#define CLVMD_CMD_LOCK_LV           50
+#define CLVMD_CMD_LOCK_VG           51
+
+#endif

daemons/clvmd/clvmd-cman.c

@@ -0,0 +1,540 @@
+/*
+ * Copyright (C) 2002-2004 Sistina Software, Inc. All rights reserved.
+ * Copyright (C) 2004 Red Hat, Inc. All rights reserved.
+ *
+ * This file is part of LVM2.
+ *
+ * This copyrighted material is made available to anyone wishing to use,
+ * modify, copy, or redistribute it subject to the terms and conditions
+ * of the GNU General Public License v.2.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+/*
+ * CMAN communication layer for clvmd.
+ */
+
+#include <pthread.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/socket.h>
+#include <sys/uio.h>
+#include <sys/un.h>
+#include <sys/time.h>
+#include <sys/ioctl.h>
+#include <sys/utsname.h>
+#include <syslog.h>
+#include <netinet/in.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <stddef.h>
+#include <signal.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <getopt.h>
+#include <errno.h>
+
+#include "clvmd-comms.h"
+#include "clvm.h"
+#include "libdlm.h"
+#include "log.h"
+#include "clvmd.h"
+#include "lvm-functions.h"
+
+#define LOCKSPACE_NAME "clvmd"
+
+static int cluster_sock;
+static int num_nodes;
+static struct cl_cluster_node *nodes = NULL;
+static int count_nodes; /* size of allocated nodes array */
+static int max_updown_nodes = 50;	/* Current size of the allocated array */
+/* Node up/down status, indexed by nodeid */
+static int *node_updown = NULL;
+static dlm_lshandle_t *lockspace;
+
+static void count_clvmds_running(void);
+static void get_members(void);
+static int nodeid_from_csid(char *csid);
+static int name_from_nodeid(int nodeid, char *name);
+
+struct lock_wait {
+	pthread_cond_t cond;
+	pthread_mutex_t mutex;
+	struct dlm_lksb lksb;
+};
+
+static int _init_cluster(void)
+{
+	struct sockaddr_cl saddr;
+	int port = CLUSTER_PORT_CLVMD;
+
+	/* Open the cluster communication socket */
+	cluster_sock = socket(AF_CLUSTER, SOCK_DGRAM, CLPROTO_CLIENT);
+	if (cluster_sock == -1) {
+		/* Don't print an error here because we could be just probing for CMAN */
+		return -1;
+	}
+	/* Set Close-on-exec */
+	fcntl(cluster_sock, F_SETFD, 1);
+
+	/* Bind to our port number on the cluster.
+	   Writes to this will block if the cluster loses quorum */
+	saddr.scl_family = AF_CLUSTER;
+	saddr.scl_port = port;
+
+	if (bind
+	    (cluster_sock, (struct sockaddr *) &saddr,
+	     sizeof(struct sockaddr_cl))) {
+		syslog(LOG_ERR, "Can't bind cluster socket: %m");
+		return -1;
+	}
+
+	/* Get the cluster members list */
+	get_members();
+	count_clvmds_running();
+
+	/* Create a lockspace for LV & VG locks to live in */
+	lockspace = dlm_create_lockspace(LOCKSPACE_NAME, 0600);
+	if (!lockspace) {
+		syslog(LOG_ERR, "Unable to create lockspace for CLVM: %m");
+		return -1;
+	}
+	dlm_ls_pthread_init(lockspace);
+
+	return 0;
+}
+
+static void _cluster_init_completed(void)
+{
+	clvmd_cluster_init_completed();
+}
+
+static int _get_main_cluster_fd()
+{
+	return cluster_sock;
+}
+
+static int _get_num_nodes()
+{
+	return num_nodes;
+}
+
+/* send_message with the fd check removed */
+static int _cluster_send_message(void *buf, int msglen, char *csid, const char *errtext)
+{
+	struct iovec iov[2];
+	struct msghdr msg;
+	struct sockaddr_cl saddr;
+	int len = 0;
+
+	msg.msg_control = NULL;
+	msg.msg_controllen = 0;
+	msg.msg_iovlen = 1;
+	msg.msg_iov = iov;
+	msg.msg_flags = 0;
+	iov[0].iov_len = msglen;
+	iov[0].iov_base = buf;
+
+	saddr.scl_family = AF_CLUSTER;
+	saddr.scl_port = CLUSTER_PORT_CLVMD;
+	if (csid) {
+		msg.msg_name = &saddr;
+		msg.msg_namelen = sizeof(saddr);
+		memcpy(&saddr.scl_nodeid, csid, CMAN_MAX_CSID_LEN);
+	} else {		/* Cluster broadcast */
+
+		msg.msg_name = NULL;
+		msg.msg_namelen = 0;
+	}
+
+	do {
+		len = sendmsg(cluster_sock, &msg, 0);
+		if (len < 0 && errno != EAGAIN)
+			log_error(errtext);
+
+	} while (len == -1 && errno == EAGAIN);
+	return len;
+}
+
+static void _get_our_csid(char *csid)
+{
+	int i;
+	memset(csid, 0, CMAN_MAX_CSID_LEN);
+
+	for (i = 0; i < num_nodes; i++) {
+		if (nodes[i].us)
+			memcpy(csid, &nodes[i].node_id, CMAN_MAX_CSID_LEN);
+	}
+}
+
+/* Call a callback routine for each node that known (down mean not running a clvmd) */
+static int _cluster_do_node_callback(struct local_client *client,
+			     void (*callback) (struct local_client *, char *,
+					       int))
+{
+	int i;
+	int somedown = 0;
+
+	for (i = 0; i < _get_num_nodes(); i++) {
+		callback(client, (char *)&nodes[i].node_id, node_updown[nodes[i].node_id]);
+		if (!node_updown[nodes[i].node_id])
+			somedown = -1;
+	}
+	return somedown;
+}
+
+/* Process OOB message from the cluster socket,
+   this currently just means that a node has stopped listening on our port */
+static void process_oob_msg(char *buf, int len, int nodeid)
+{
+	char namebuf[256];
+	switch (buf[0]) {
+        case CLUSTER_OOB_MSG_PORTCLOSED:
+		name_from_nodeid(nodeid, namebuf);
+		log_notice("clvmd on node %s has died\n", namebuf);
+		DEBUGLOG("Got OOB message, removing node %s\n", namebuf);
+
+		node_updown[nodeid] = 0;
+		break;
+
+	case CLUSTER_OOB_MSG_STATECHANGE:
+		DEBUGLOG("Got OOB message, Cluster state change\n");
+		get_members();
+		break;
+	default:
+		/* ERROR */
+		DEBUGLOG("Got unknown OOB message: %d\n", buf[0]);
+	}
+}
+
+static int _cluster_fd_callback(struct local_client *client, char *buf, int len, char *csid,
+			struct local_client **new_client)
+{
+	struct iovec iov[2];
+	struct msghdr msg;
+	struct sockaddr_cl saddr;
+
+	/* We never return a new client */
+	*new_client = NULL;
+
+	msg.msg_control = NULL;
+	msg.msg_controllen = 0;
+	msg.msg_iovlen = 1;
+	msg.msg_iov = iov;
+	msg.msg_name = &saddr;
+	msg.msg_flags = 0;
+	msg.msg_namelen = sizeof(saddr);
+	iov[0].iov_len = len;
+	iov[0].iov_base = buf;
+
+	len = recvmsg(cluster_sock, &msg, MSG_OOB | O_NONBLOCK);
+	if (len < 0 && errno == EAGAIN)
+		return len;
+
+	DEBUGLOG("Read on cluster socket, len = %d\n", len);
+
+	/* A real error */
+	if (len < 0) {
+		log_error("read error on cluster socket: %m");
+		return 0;
+	}
+
+	/* EOF - we have left the cluster */
+	if (len == 0)
+		return 0;
+
+	/* Is it OOB? probably a node gone down */
+	if (msg.msg_flags & MSG_OOB) {
+		process_oob_msg(iov[0].iov_base, len, saddr.scl_nodeid);
+
+		/* Tell the upper layer to ignore this message */
+		len = -1;
+		errno = EAGAIN;
+	}
+	else {
+		memcpy(csid, &saddr.scl_nodeid, sizeof(saddr.scl_nodeid));
+		/* Send it back to clvmd */
+		process_message(client, buf, len, csid);
+	}
+	return len;
+}
+
+static void _add_up_node(char *csid)
+{
+	/* It's up ! */
+	int nodeid = nodeid_from_csid(csid);
+
+	if (nodeid >= max_updown_nodes) {
+	        int new_size = nodeid + 10;
+		int *new_updown = realloc(node_updown, new_size);
+
+		if (new_updown) {
+			node_updown = new_updown;
+			max_updown_nodes = new_size;
+			DEBUGLOG("realloced more space for nodes. now %d\n",
+				 max_updown_nodes);
+		} else {
+			log_error
+			    ("Realloc failed. Node status for clvmd will be wrong. quitting\n");
+			exit(999);
+		}
+	}
+	node_updown[nodeid] = 1;
+	DEBUGLOG("Added new node %d to updown list\n", nodeid);
+}
+
+static void _cluster_closedown()
+{
+	unlock_all();
+	dlm_release_lockspace(LOCKSPACE_NAME, lockspace, 1);
+	close(cluster_sock);
+}
+
+static int is_listening(int nodeid)
+{
+	struct cl_listen_request rq;
+	int status;
+
+	rq.port = CLUSTER_PORT_CLVMD;
+	rq.nodeid = nodeid;
+
+	do {
+		status = ioctl(cluster_sock, SIOCCLUSTER_ISLISTENING, &rq);
+		if (status < 0 && errno == EBUSY) {	/* Don't busywait */
+			sleep(1);
+			errno = EBUSY;	/* In case sleep trashes it */
+		}
+	}
+	while (status < 0 && errno == EBUSY);
+
+	return status;
+}
+
+/* Populate the list of CLVMDs running.
+   called only at startup time */
+static void count_clvmds_running(void)
+{
+	int i;
+
+	for (i = 0; i < num_nodes; i++) {
+		node_updown[nodes[i].node_id] = is_listening(nodes[i].node_id);
+	}
+}
+
+/* Get a list of active cluster members */
+static void get_members()
+{
+	struct cl_cluster_nodelist nodelist;
+
+	num_nodes = ioctl(cluster_sock, SIOCCLUSTER_GETMEMBERS, 0);
+	if (num_nodes == -1) {
+		log_error("Unable to get node count");
+	} else {
+	        /* Not enough room for new nodes list ? */
+	        if (num_nodes > count_nodes && nodes) {
+			free(nodes);
+			nodes = NULL;
+		}
+
+		if (nodes == NULL) {
+		        count_nodes = num_nodes + 10; /* Overallocate a little */
+		        nodes = malloc(count_nodes * sizeof(struct cl_cluster_node));
+			if (!nodes) {
+			        log_error("Unable to allocate nodes array\n");
+				exit(5);
+			}
+		}
+		nodelist.max_members = count_nodes;
+		nodelist.nodes = nodes;
+
+		num_nodes = ioctl(cluster_sock, SIOCCLUSTER_GETMEMBERS, &nodelist);
+		if (num_nodes <= 0) {
+		        log_error("Unable to get node details");
+			exit(6);
+		}
+
+		/* Sanity check struct */
+		if (nodes[0].size != sizeof(struct cl_cluster_node)) {
+			log_error
+			    ("sizeof(cl_cluster_node) does not match size returned from the kernel: aborting\n");
+			exit(10);
+		}
+
+		if (node_updown == NULL) {
+			node_updown =
+			    (int *) malloc(sizeof(int) *
+					   max(num_nodes, max_updown_nodes));
+			memset(node_updown, 0,
+			       sizeof(int) * max(num_nodes, max_updown_nodes));
+		}
+	}
+}
+
+/* Convert a node name to a CSID */
+static int _csid_from_name(char *csid, char *name)
+{
+	int i;
+
+	for (i = 0; i < num_nodes; i++) {
+		if (strcmp(name, nodes[i].name) == 0) {
+			memcpy(csid, &nodes[i].node_id, CMAN_MAX_CSID_LEN);
+			return 0;
+		}
+	}
+	return -1;
+}
+
+/* Convert a CSID to a node name */
+static int _name_from_csid(char *csid, char *name)
+{
+	int i;
+
+	for (i = 0; i < num_nodes; i++) {
+		if (memcmp(csid, &nodes[i].node_id, CMAN_MAX_CSID_LEN) == 0) {
+			strcpy(name, nodes[i].name);
+			return 0;
+		}
+	}
+	/* Who?? */
+	strcpy(name, "Unknown");
+	return -1;
+}
+
+/* Convert a node ID to a node name */
+static int name_from_nodeid(int nodeid, char *name)
+{
+	int i;
+
+	for (i = 0; i < num_nodes; i++) {
+		if (nodeid == nodes[i].node_id) {
+			strcpy(name, nodes[i].name);
+			return 0;
+		}
+	}
+	/* Who?? */
+	strcpy(name, "Unknown");
+	return -1;
+}
+
+/* Convert a CSID to a node ID */
+static int nodeid_from_csid(char *csid)
+{
+        int nodeid;
+
+	memcpy(&nodeid, csid, CMAN_MAX_CSID_LEN);
+
+	return nodeid;
+}
+
+static int _is_quorate()
+{
+	return ioctl(cluster_sock, SIOCCLUSTER_ISQUORATE, 0);
+}
+
+static void sync_ast_routine(void *arg)
+{
+	struct lock_wait *lwait = arg;
+
+	pthread_mutex_lock(&lwait->mutex);
+	pthread_cond_signal(&lwait->cond);
+	pthread_mutex_unlock(&lwait->mutex);
+}
+
+static int _sync_lock(const char *resource, int mode, int flags, int *lockid)
+{
+	int status;
+	struct lock_wait lwait;
+
+	if (!lockid) {
+		errno = EINVAL;
+		return -1;
+	}
+
+	DEBUGLOG("sync_lock: '%s' mode:%d flags=%d\n", resource,mode,flags);
+	/* Conversions need the lockid in the LKSB */
+	if (flags & LKF_CONVERT)
+		lwait.lksb.sb_lkid = *lockid;
+
+	pthread_cond_init(&lwait.cond, NULL);
+	pthread_mutex_init(&lwait.mutex, NULL);
+	pthread_mutex_lock(&lwait.mutex);
+
+	status = dlm_ls_lock(lockspace,
+			     mode,
+			     &lwait.lksb,
+			     flags,
+			     resource,
+			     strlen(resource),
+			     0, sync_ast_routine, &lwait, NULL, NULL);
+	if (status)
+		return status;
+
+	/* Wait for it to complete */
+	pthread_cond_wait(&lwait.cond, &lwait.mutex);
+	pthread_mutex_unlock(&lwait.mutex);
+
+	*lockid = lwait.lksb.sb_lkid;
+
+	errno = lwait.lksb.sb_status;
+	DEBUGLOG("sync_lock: returning lkid %x\n", *lockid);
+	if (lwait.lksb.sb_status)
+		return -1;
+	else
+		return 0;
+}
+
+static int _sync_unlock(const char *resource /* UNUSED */, int lockid)
+{
+	int status;
+	struct lock_wait lwait;
+
+	DEBUGLOG("sync_unlock: '%s' lkid:%x\n", resource, lockid);
+
+	pthread_cond_init(&lwait.cond, NULL);
+	pthread_mutex_init(&lwait.mutex, NULL);
+	pthread_mutex_lock(&lwait.mutex);
+
+	status = dlm_ls_unlock(lockspace, lockid, 0, &lwait.lksb, &lwait);
+
+	if (status)
+		return status;
+
+	/* Wait for it to complete */
+	pthread_cond_wait(&lwait.cond, &lwait.mutex);
+	pthread_mutex_unlock(&lwait.mutex);
+
+	errno = lwait.lksb.sb_status;
+	if (lwait.lksb.sb_status != EUNLOCK)
+		return -1;
+	else
+		return 0;
+
+}
+
+static struct cluster_ops _cluster_cman_ops = {
+	.cluster_init_completed   = _cluster_init_completed,
+	.cluster_send_message     = _cluster_send_message,
+	.name_from_csid           = _name_from_csid,
+	.csid_from_name           = _csid_from_name,
+	.get_num_nodes            = _get_num_nodes,
+	.cluster_fd_callback      = _cluster_fd_callback,
+	.get_main_cluster_fd      = _get_main_cluster_fd,
+	.cluster_do_node_callback = _cluster_do_node_callback,
+	.is_quorate               = _is_quorate,
+	.get_our_csid             = _get_our_csid,
+	.add_up_node              = _add_up_node,
+	.cluster_closedown        = _cluster_closedown,
+	.sync_lock                = _sync_lock,
+	.sync_unlock              = _sync_unlock,
+};
+
+struct cluster_ops *init_cman_cluster(void)
+{
+	if (!_init_cluster())
+		return &_cluster_cman_ops;
+	else
+		return NULL;
+}

daemons/clvmd/clvmd-command.c

@@ -0,0 +1,286 @@
+/*
+ * Copyright (C) 2002-2004 Sistina Software, Inc. All rights reserved.
+ * Copyright (C) 2004 Red Hat, Inc. All rights reserved.
+ *
+ * This file is part of LVM2.
+ *
+ * This copyrighted material is made available to anyone wishing to use,
+ * modify, copy, or redistribute it subject to the terms and conditions
+ * of the GNU General Public License v.2.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+/*
+
+  CLVMD Cluster LVM daemon command processor.
+
+  To add commands to the daemon simply add a processor in do_command and return
+  and messages back in buf and the length in *retlen. The initial value of
+  buflen is the maximum size of the buffer. if buf is not large enough then it
+  may be reallocated by the functions in here to a suitable size bearing in
+  mind that anything larger than the passed-in size will have to be returned
+  using the system LV and so performance will suffer.
+
+  The status return will be negated and passed back to the originating node.
+
+  pre- and post- command routines are called only on the local node. The
+  purpose is primarily to get and release locks, though the pre- routine should
+  also do any other local setups required by the command (if any) and can
+  return a failure code that prevents the command from being distributed around
+  the cluster
+
+  The pre- and post- routines are run in their own thread so can block as long
+  they like, do_command is run in the main clvmd thread so should not block for
+  too long. If the pre-command returns an error code (!=0) then the command
+  will not be propogated around the cluster but the post-command WILL be called
+
+  Also note that the pre and post routine are *always* called on the local
+  node, even if the command to be executed was only requested to run on a
+  remote node. It may peek inside the client structure to check the status of
+  the command.
+
+  The clients of the daemon must, naturally, understand the return messages and
+  codes.
+
+  Routines in here may only READ the values in the client structure passed in
+  apart from client->private which they are free to do what they like with.
+
+*/
+
+#include <pthread.h>
+#include <sys/types.h>
+#include <sys/utsname.h>
+#include <sys/ioctl.h>
+#include <sys/socket.h>
+#include <sys/stat.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <fcntl.h>
+#include <string.h>
+#include <stddef.h>
+#include <unistd.h>
+#include <errno.h>
+
+#include "libdevmapper.h"
+#include "list.h"
+#include "locking.h"
+#include "log.h"
+#include "lvm-functions.h"
+#include "clvmd-comms.h"
+#include "clvm.h"
+#include "clvmd.h"
+#include "libdlm.h"
+
+/* This is where all the real work happens:
+   NOTE: client will be NULL when this is executed on a remote node */
+int do_command(struct local_client *client, struct clvm_header *msg, int msglen,
+	       char **buf, int buflen, int *retlen)
+{
+	char *args = msg->node + strlen(msg->node) + 1;
+	int arglen = msglen - sizeof(struct clvm_header) - strlen(msg->node);
+	int status = 0;
+	char *lockname;
+	struct utsname nodeinfo;
+	unsigned char lock_cmd;
+	unsigned char lock_flags;
+
+	/* Do the command */
+	switch (msg->cmd) {
+		/* Just a test message */
+	case CLVMD_CMD_TEST:
+		if (arglen > buflen) {
+			buflen = arglen + 200;
+			*buf = realloc(*buf, buflen);
+		}
+		uname(&nodeinfo);
+		*retlen = 1 + snprintf(*buf, buflen, "TEST from %s: %s v%s",
+				       nodeinfo.nodename, args,
+				       nodeinfo.release);
+		break;
+
+	case CLVMD_CMD_LOCK_VG:
+		/* Check to see if the VG is in use by LVM1 */
+		status = do_check_lvm1(&args[2]);
+		break;
+
+	case CLVMD_CMD_LOCK_LV:
+		/* This is the biggie */
+		lock_cmd = args[0] & 0x3F;
+		lock_flags = args[1];
+		lockname = &args[2];
+		status = do_lock_lv(lock_cmd, lock_flags, lockname);
+		/* Replace EIO with something less scary */
+		if (status == EIO) {
+			*retlen =
+			    1 + snprintf(*buf, buflen,
+					 "Internal lvm error, check syslog");
+			return EIO;
+		}
+		break;
+
+	default:
+		/* Won't get here because command is validated in pre_command */
+		break;
+	}
+
+	/* Check the status of the command and return the error text */
+	if (status) {
+		*retlen = 1 + snprintf(*buf, buflen, strerror(status));
+	}
+
+	return status;
+
+}
+
+static int lock_vg(struct local_client *client)
+{
+    struct dm_hash_table *lock_hash;
+    struct clvm_header *header =
+	(struct clvm_header *) client->bits.localsock.cmd;
+    unsigned char lock_cmd;
+    unsigned char lock_flags;
+    char *args = header->node + strlen(header->node) + 1;
+    int lkid;
+    int status = 0;
+    char *lockname;
+
+    /* Keep a track of VG locks in our own hash table. In current
+       practice there should only ever be more than two VGs locked
+       if a user tries to merge lots of them at once */
+    if (client->bits.localsock.private) {
+	lock_hash = (struct dm_hash_table *)client->bits.localsock.private;
+    }
+    else {
+	lock_hash = dm_hash_create(3);
+	if (!lock_hash)
+	    return ENOMEM;
+	client->bits.localsock.private = (void *)lock_hash;
+    }
+
+    lock_cmd = args[0] & 0x3F;
+    lock_flags = args[1];
+    lockname = &args[2];
+    DEBUGLOG("doing PRE command LOCK_VG '%s' at %x (client=%p)\n", lockname, lock_cmd, client);
+
+    if (lock_cmd == LCK_UNLOCK) {
+
+	lkid = (int)(long)dm_hash_lookup(lock_hash, lockname);
+	if (lkid == 0)
+	    return EINVAL;
+
+	status = sync_unlock(lockname, lkid);
+	if (status)
+	    status = errno;
+	else
+	    dm_hash_remove(lock_hash, lockname);
+    }
+    else {
+
+	status = sync_lock(lockname, (int)lock_cmd, (int)lock_flags, &lkid);
+	if (status)
+	    status = errno;
+	else
+	    dm_hash_insert(lock_hash, lockname, (void *)lkid);
+    }
+
+    return status;
+}
+
+
+/* Pre-command is a good place to get locks that are needed only for the duration
+   of the commands around the cluster (don't forget to free them in post-command),
+   and to sanity check the command arguments */
+int do_pre_command(struct local_client *client)
+{
+	struct clvm_header *header =
+	    (struct clvm_header *) client->bits.localsock.cmd;
+	unsigned char lock_cmd;
+	unsigned char lock_flags;
+	char *args = header->node + strlen(header->node) + 1;
+	int lockid;
+	int status = 0;
+	char *lockname;
+
+	switch (header->cmd) {
+	case CLVMD_CMD_TEST:
+		status = sync_lock("CLVMD_TEST", LKM_EXMODE, 0, &lockid);
+		client->bits.localsock.private = (void *) lockid;
+		break;
+
+	case CLVMD_CMD_LOCK_VG:
+       	        status = lock_vg(client);
+		break;
+
+	case CLVMD_CMD_LOCK_LV:
+		lock_cmd = args[0];
+		lock_flags = args[1];
+		lockname = &args[2];
+		status = pre_lock_lv(lock_cmd, lock_flags, lockname);
+		break;
+
+	default:
+		log_error("Unknown command %d received\n", header->cmd);
+		status = EINVAL;
+	}
+	return status;
+}
+
+/* Note that the post-command routine is called even if the pre-command or the real command
+   failed */
+int do_post_command(struct local_client *client)
+{
+	struct clvm_header *header =
+	    (struct clvm_header *) client->bits.localsock.cmd;
+	int status = 0;
+	unsigned char lock_cmd;
+	unsigned char lock_flags;
+	char *args = header->node + strlen(header->node) + 1;
+	char *lockname;
+
+	switch (header->cmd) {
+	case CLVMD_CMD_TEST:
+		status =
+		    sync_unlock("CLVMD_TEST", (int) (long) client->bits.localsock.private);
+		client->bits.localsock.private = 0;
+		break;
+
+	case CLVMD_CMD_LOCK_VG:
+		/* Nothing to do here */
+		break;
+
+	case CLVMD_CMD_LOCK_LV:
+		lock_cmd = args[0];
+		lock_flags = args[1];
+		lockname = &args[2];
+		status = post_lock_lv(lock_cmd, lock_flags, lockname);
+		break;
+	}
+	return status;
+}
+
+
+/* Called when the client is about to be deleted */
+void cmd_client_cleanup(struct local_client *client)
+{
+    if (client->bits.localsock.private) {
+
+	struct dm_hash_node *v;
+	struct dm_hash_table *lock_hash =
+	    (struct dm_hash_table *)client->bits.localsock.private;
+
+	dm_hash_iterate(v, lock_hash) {
+		int lkid = (int)(long)dm_hash_get_data(lock_hash, v);
+		char *lockname = dm_hash_get_key(lock_hash, v);
+
+		DEBUGLOG("cleanup: Unlocking lock %s %x\n", lockname, lkid);
+		sync_unlock(lockname, lkid);
+	}
+
+	dm_hash_destroy(lock_hash);
+	client->bits.localsock.private = 0;
+    }
+}

daemons/clvmd/clvmd-comms.h

@@ -0,0 +1,70 @@
+/*
+ * Copyright (C) 2002-2004 Sistina Software, Inc. All rights reserved.
+ * Copyright (C) 2004 Red Hat, Inc. All rights reserved.
+ *
+ * This file is part of LVM2.
+ *
+ * This copyrighted material is made available to anyone wishing to use,
+ * modify, copy, or redistribute it subject to the terms and conditions
+ * of the GNU General Public License v.2.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+/*
+ * Abstraction layer for clvmd cluster communications
+ */
+
+#ifndef _CLVMD_COMMS_H
+#define _CLVMD_COMMS_H
+
+struct local_client;
+
+struct cluster_ops {
+	void (*cluster_init_completed) (void);
+
+	int (*cluster_send_message) (void *buf, int msglen, char *csid,
+				const char *errtext);
+	int (*name_from_csid) (char *csid, char *name);
+	int (*csid_from_name) (char *csid, char *name);
+	int (*get_num_nodes) (void);
+	int (*cluster_fd_callback) (struct local_client *fd, char *buf, int len,
+			       char *csid, struct local_client **new_client);
+	int (*get_main_cluster_fd) (void);	/* gets accept FD or cman cluster socket */
+	int (*cluster_do_node_callback) (struct local_client *client,
+				    void (*callback) (struct local_client *,
+						      char *csid, int node_up));
+	int (*is_quorate) (void);
+
+	void (*get_our_csid) (char *csid);
+	void (*add_up_node) (char *csid);
+	void (*reread_config) (void);
+	void (*cluster_closedown) (void);
+
+	int (*sync_lock) (const char *resource, int mode, int flags, int *lockid);
+	int (*sync_unlock) (const char *resource, int lockid);
+
+};
+
+#ifdef USE_GULM
+#  include "tcp-comms.h"
+struct cluster_ops *init_gulm_cluster(void);
+#define MAX_CSID_LEN 			GULM_MAX_CSID_LEN
+#define MAX_CLUSTER_MEMBER_NAME_LEN	GULM_MAX_CLUSTER_MEMBER_NAME_LEN
+#endif
+
+#ifdef USE_CMAN
+#  include "cnxman-socket.h"
+#  define CMAN_MAX_CSID_LEN 4
+#  ifndef MAX_CSID_LEN
+#    define MAX_CSID_LEN CMAN_MAX_CSID_LEN
+#  endif
+#  undef MAX_CLUSTER_MEMBER_NAME_LEN
+#  define MAX_CLUSTER_MEMBER_NAME_LEN	CMAN_MAX_CLUSTER_MEMBER_NAME_LEN
+struct cluster_ops *init_cman_cluster(void);
+#endif
+
+
+#endif

daemons/clvmd/clvmd-gulm.h

@@ -0,0 +1,12 @@
+
+
+
+extern int get_next_node_csid(void **context, char *csid);
+extern void add_down_node(char *csid);
+extern int gulm_fd(void);
+extern int get_ip_address(char *node, char *addr);
+extern void tcp_remove_client(char *csid);
+extern int alloc_client(int fd, char *csid, struct local_client **new_client);
+
+void gulm_add_up_node(char *csid);
+int gulm_name_from_csid(char *csid, char *name);

daemons/clvmd/clvmd.h

@@ -0,0 +1,124 @@
+/*
+ * Copyright (C) 2002-2004 Sistina Software, Inc. All rights reserved.
+ * Copyright (C) 2004 Red Hat, Inc. All rights reserved.
+ *
+ * This file is part of LVM2.
+ *
+ * This copyrighted material is made available to anyone wishing to use,
+ * modify, copy, or redistribute it subject to the terms and conditions
+ * of the GNU General Public License v.2.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#ifndef _CLVMD_H
+#define _CLVMD_H
+
+#define CLVMD_MAJOR_VERSION 0
+#define CLVMD_MINOR_VERSION 2
+#define CLVMD_PATCH_VERSION 1
+
+/* Name of the cluster LVM admin lock */
+#define ADMIN_LOCK_NAME "CLVMD_ADMIN"
+
+/* Default time (in seconds) we will wait for all remote commands to execute
+   before declaring them dead */
+#define DEFAULT_CMD_TIMEOUT 60
+
+/* One of these for each reply we get from command execution on a node */
+struct node_reply {
+	char node[MAX_CLUSTER_MEMBER_NAME_LEN];
+	char *replymsg;
+	int status;
+	struct node_reply *next;
+};
+
+/*
+ * These exist for the use of local sockets only when we are
+ * collecting responses from all cluster nodes
+ */
+struct localsock_bits {
+	struct node_reply *replies;
+	int num_replies;
+	int expected_replies;
+	time_t sent_time;	/* So we can check for timeouts */
+	int in_progress;	/* Only execute one cmd at a time per client */
+	int sent_out;		/* Flag to indicate that a command was sent
+				   to remote nodes */
+	void *private;		/* Private area for command processor use */
+	void *cmd;		/* Whole command as passed down local socket */
+	int cmd_len;		/* Length of above */
+	int pipe;		/* Pipe to send PRE completion status down */
+	int finished;		/* Flag to tell subthread to exit */
+	int all_success;	/* Set to 0 if any node (or the pre_command)
+				   failed */
+	struct local_client *pipe_client;
+	pthread_t threadid;
+	enum { PRE_COMMAND, POST_COMMAND, QUIT } state;
+	pthread_mutex_t mutex;	/* Main thread and worker synchronisation */
+	pthread_cond_t cond;
+
+	pthread_mutex_t reply_mutex;	/* Protect reply structure */
+};
+
+/* Entries for PIPE clients */
+struct pipe_bits {
+	struct local_client *client;	/* Actual (localsock) client */
+	pthread_t threadid;		/* Our own copy of the thread id */
+};
+
+/* Entries for Network socket clients */
+struct netsock_bits {
+	void *private;
+	int flags;
+};
+
+typedef int (*fd_callback_t) (struct local_client * fd, char *buf, int len,
+			      char *csid, struct local_client ** new_client);
+
+/* One of these for each fd we are listening on */
+struct local_client {
+	int fd;
+	enum { CLUSTER_MAIN_SOCK, CLUSTER_DATA_SOCK, LOCAL_RENDEZVOUS,
+		    LOCAL_SOCK, THREAD_PIPE, CLUSTER_INTERNAL } type;
+	struct local_client *next;
+	unsigned short xid;
+	fd_callback_t callback;
+	uint8_t removeme;
+
+	union {
+		struct localsock_bits localsock;
+		struct pipe_bits pipe;
+		struct netsock_bits net;
+	} bits;
+};
+
+#ifdef DEBUG
+#define DEBUGLOG(fmt, args...) {time_t P; time(&P); fprintf(stderr, "CLVMD[%x]: %.15s ", (int)pthread_self(), ctime(&P)+4 ); fprintf(stderr, fmt, ## args);}
+#else
+#define DEBUGLOG(fmt, args...)
+#endif
+
+#ifndef max
+#define max(a,b) ((a)>(b)?(a):(b))
+#endif
+
+/* The real command processor is in clvmd-command.c */
+extern int do_command(struct local_client *client, struct clvm_header *msg,
+		      int msglen, char **buf, int buflen, int *retlen);
+
+/* Pre and post command routines are called only on the local node */
+extern int do_pre_command(struct local_client *client);
+extern int do_post_command(struct local_client *client);
+extern void cmd_client_cleanup(struct local_client *client);
+extern int add_client(struct local_client *new_client);
+
+extern void clvmd_cluster_init_completed(void);
+extern void process_message(struct local_client *client, char *buf, int len, char *csid);
+
+int sync_lock(const char *resource, int mode, int flags, int *lockid);
+int sync_unlock(const char *resource, int lockid);
+
+#endif

daemons/clvmd/cnxman-socket.h

@@ -0,0 +1,226 @@
+/******************************************************************************
+*******************************************************************************
+**
+**  Copyright (C) Sistina Software, Inc.  1997-2003  All rights reserved.
+**  Copyright (C) 2004 Red Hat, Inc.  All rights reserved.
+**
+**  This copyrighted material is made available to anyone wishing to use,
+**  modify, copy, or redistribute it subject to the terms and conditions
+**  of the GNU General Public License v.2.
+**
+*******************************************************************************
+******************************************************************************/
+
+/* CMAN socket interface header,
+   may be include by user or kernel code */
+
+#ifndef __CNXMAN_SOCKET_H
+#define __CNXMAN_SOCKET_H
+
+/* A currently unused number. TIPC also uses this number and you're unlikely
+   to be using both.
+ */
+#define AF_CLUSTER 30
+#define PF_CLUSTER AF_CLUSTER
+
+/* Protocol(socket) types */
+#define CLPROTO_MASTER 2
+#define CLPROTO_CLIENT 3
+
+/* ioctls -- should register these properly */
+#define SIOCCLUSTER_NOTIFY            _IOW('x', 0x01, int)
+#define SIOCCLUSTER_REMOVENOTIFY      _IO( 'x', 0x02)
+#define SIOCCLUSTER_GETMEMBERS        _IOR('x', 0x03, struct cl_cluster_nodelist)
+#define SIOCCLUSTER_SETEXPECTED_VOTES _IOW('x', 0x04, int)
+#define SIOCCLUSTER_ISQUORATE         _IO( 'x', 0x05)
+#define SIOCCLUSTER_ISLISTENING       _IOW('x', 0x06, struct cl_listen_request)
+#define SIOCCLUSTER_GETALLMEMBERS     _IOR('x', 0x07, struct cl_cluster_nodelist)
+#define SIOCCLUSTER_SET_VOTES         _IOW('x', 0x08, int)
+#define SIOCCLUSTER_GET_VERSION       _IOR('x', 0x09, struct cl_version)
+#define SIOCCLUSTER_SET_VERSION       _IOW('x', 0x0a, struct cl_version)
+#define SIOCCLUSTER_ISACTIVE          _IO( 'x', 0x0b)
+#define SIOCCLUSTER_KILLNODE          _IOW('x', 0x0c, int)
+#define SIOCCLUSTER_GET_JOINCOUNT     _IO( 'x', 0x0d)
+#define SIOCCLUSTER_SERVICE_REGISTER  _IOW('x', 0x0e, char)
+#define SIOCCLUSTER_SERVICE_UNREGISTER _IO('x', 0x0f)
+#define SIOCCLUSTER_SERVICE_JOIN      _IO( 'x', 0x10)
+#define SIOCCLUSTER_SERVICE_LEAVE     _IO( 'x', 0x20)
+#define SIOCCLUSTER_SERVICE_SETSIGNAL _IOW('x', 0x30, int)
+#define SIOCCLUSTER_SERVICE_STARTDONE _IOW('x', 0x40, unsigned int)
+#define SIOCCLUSTER_SERVICE_GETEVENT  _IOR('x', 0x50, struct cl_service_event)
+#define SIOCCLUSTER_SERVICE_GETMEMBERS _IOR('x', 0x60, struct cl_cluster_nodelist)
+#define SIOCCLUSTER_SERVICE_GLOBALID  _IOR('x', 0x70, uint32_t)
+#define SIOCCLUSTER_SERVICE_SETLEVEL  _IOR('x', 0x80, int)
+#define SIOCCLUSTER_GETNODE	      _IOWR('x', 0x90, struct cl_cluster_node)
+#define SIOCCLUSTER_BARRIER           _IOW('x', 0x0a0, struct cl_barrier_info)
+
+/* These were setsockopts */
+#define SIOCCLUSTER_PASS_SOCKET       _IOW('x', 0x0b0, struct cl_passed_sock)
+#define SIOCCLUSTER_SET_NODENAME      _IOW('x', 0x0b1, char *)
+#define SIOCCLUSTER_SET_NODEID        _IOW('x', 0x0b2, int)
+#define SIOCCLUSTER_JOIN_CLUSTER      _IOW('x', 0x0b3, struct cl_join_cluster_info)
+#define SIOCCLUSTER_LEAVE_CLUSTER     _IOW('x', 0x0b4, int)
+
+
+/* Maximum size of a cluster message */
+#define CMAN_MAX_CLUSTER_MESSAGE          1500
+#define CMAN_MAX_CLUSTER_MEMBER_NAME_LEN   255
+#define MAX_BARRIER_NAME_LEN           33
+#define MAX_SA_ADDR_LEN                12
+#define MAX_CLUSTER_NAME_LEN           16
+
+/* Well-known cluster port numbers */
+#define CLUSTER_PORT_MEMBERSHIP  1	/* Mustn't block during cluster
+					 * transitions! */
+#define CLUSTER_PORT_SERVICES    2
+#define CLUSTER_PORT_SYSMAN      10	/* Remote execution daemon */
+#define CLUSTER_PORT_CLVMD       11	/* Cluster LVM daemon */
+#define CLUSTER_PORT_SLM         12	/* LVM SLM (simple lock manager) */
+
+/* Port numbers above this will be blocked when the cluster is inquorate or in
+ * transition */
+#define HIGH_PROTECTED_PORT      9
+
+/* Reasons for leaving the cluster */
+#define CLUSTER_LEAVEFLAG_DOWN     0	/* Normal shutdown */
+#define CLUSTER_LEAVEFLAG_KILLED   1
+#define CLUSTER_LEAVEFLAG_PANIC    2
+#define CLUSTER_LEAVEFLAG_REMOVED  3	/* This one can reduce quorum */
+#define CLUSTER_LEAVEFLAG_REJECTED 4	/* Not allowed into the cluster in the
+					 * first place */
+#define CLUSTER_LEAVEFLAG_INCONSISTENT 5	/* Our view of the cluster is
+						 * in a minority */
+#define CLUSTER_LEAVEFLAG_DEAD         6	/* Discovered to be dead */
+#define CLUSTER_LEAVEFLAG_FORCE     0x10	/* Forced by command-line */
+
+/* OOB messages sent to a local socket */
+#define CLUSTER_OOB_MSG_PORTCLOSED  1
+#define CLUSTER_OOB_MSG_STATECHANGE 2
+#define CLUSTER_OOB_MSG_SERVICEEVENT 3
+
+/* Sendmsg flags, these are above the normal sendmsg flags so they don't
+ * interfere */
+#define MSG_NOACK     0x010000	/* Don't need an ACK for this message */
+#define MSG_QUEUE     0x020000	/* Queue the message for sending later */
+#define MSG_MULTICAST 0x080000	/* Message was sent to all nodes in the cluster
+				 */
+#define MSG_ALLINT    0x100000	/* Send out of all interfaces */
+#define MSG_REPLYEXP  0x200000	/* Reply is expected */
+
+typedef enum { NODESTATE_REMOTEMEMBER, NODESTATE_JOINING, NODESTATE_MEMBER,
+	       NODESTATE_DEAD } nodestate_t;
+
+
+struct sockaddr_cl {
+	unsigned short scl_family;
+	unsigned char scl_flags;
+	unsigned char scl_port;
+	int           scl_nodeid;
+};
+
+/*
+ * This is how we pass the multicast & receive sockets into kernel space.
+ */
+struct cl_passed_sock {
+	int fd;			/* FD of master socket to do multicast on */
+	int number;		/* Socket number, to match up recvonly & bcast
+				 * sockets */
+        int multicast;          /* Is it multicast or receive ? */
+};
+
+/* Cluster configuration info passed when we join the cluster */
+struct cl_join_cluster_info {
+	unsigned char votes;
+	unsigned int expected_votes;
+	unsigned int two_node;
+	unsigned int config_version;
+
+        char cluster_name[17];
+};
+
+
+/* This is the structure, per node, returned from the membership ioctl */
+struct cl_cluster_node {
+	unsigned int size;
+	unsigned int node_id;
+	unsigned int us;
+	unsigned int leave_reason;
+	unsigned int incarnation;
+	nodestate_t state;
+	char name[CMAN_MAX_CLUSTER_MEMBER_NAME_LEN];
+	unsigned char votes;
+};
+
+/* The struct passed to the membership ioctls */
+struct cl_cluster_nodelist {
+        uint32_t max_members;
+        struct cl_cluster_node *nodes;
+};
+
+/* Structure passed to SIOCCLUSTER_ISLISTENING */
+struct cl_listen_request {
+	unsigned char port;
+        int           nodeid;
+};
+
+/* A Cluster PORTCLOSED message - received by a local user as an OOB message */
+struct cl_portclosed_oob {
+	unsigned char cmd;	/* CLUSTER_OOB_MSG_PORTCLOSED */
+	unsigned char port;
+};
+
+/* Get all version numbers or set the config version */
+struct cl_version {
+	unsigned int major;
+	unsigned int minor;
+	unsigned int patch;
+	unsigned int config;
+};
+
+/* structure passed to barrier ioctls */
+struct cl_barrier_info {
+	char cmd;
+	char name[MAX_BARRIER_NAME_LEN];
+	unsigned int flags;
+	unsigned long arg;
+};
+
+typedef enum { SERVICE_EVENT_STOP, SERVICE_EVENT_START, SERVICE_EVENT_FINISH,
+		SERVICE_EVENT_LEAVEDONE } service_event_t;
+
+typedef enum { SERVICE_START_FAILED, SERVICE_START_JOIN, SERVICE_START_LEAVE }
+		service_start_t;
+
+struct cl_service_event {
+	service_event_t type;
+	service_start_t start_type;
+	unsigned int event_id;
+	unsigned int last_stop;
+	unsigned int last_start;
+	unsigned int last_finish;
+	unsigned int node_count;
+};
+
+
+/* Commands to the barrier ioctl */
+#define BARRIER_IOCTL_REGISTER 1
+#define BARRIER_IOCTL_CHANGE   2
+#define BARRIER_IOCTL_DELETE   3
+#define BARRIER_IOCTL_WAIT     4
+
+/* Attributes of a barrier - bitmask */
+#define BARRIER_ATTR_AUTODELETE 1
+#define BARRIER_ATTR_MULTISTEP  2
+#define BARRIER_ATTR_MANUAL     4
+#define BARRIER_ATTR_ENABLED    8
+#define BARRIER_ATTR_CALLBACK  16
+
+/* Attribute setting commands */
+#define BARRIER_SETATTR_AUTODELETE 1
+#define BARRIER_SETATTR_MULTISTEP  2
+#define BARRIER_SETATTR_ENABLED    3
+#define BARRIER_SETATTR_NODES      4
+#define BARRIER_SETATTR_CALLBACK   5
+#define BARRIER_SETATTR_TIMEOUT    6
+
+#endif

daemons/clvmd/lvm-functions.c

@@ -0,0 +1,542 @@
+/*
+ * Copyright (C) 2002-2004 Sistina Software, Inc. All rights reserved.
+ * Copyright (C) 2004 Red Hat, Inc. All rights reserved.
+ *
+ * This file is part of LVM2.
+ *
+ * This copyrighted material is made available to anyone wishing to use,
+ * modify, copy, or redistribute it subject to the terms and conditions
+ * of the GNU General Public License v.2.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#include <pthread.h>
+#include <sys/types.h>
+#include <sys/utsname.h>
+#include <sys/ioctl.h>
+#include <sys/socket.h>
+#include <sys/stat.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <fcntl.h>
+#include <string.h>
+#include <stddef.h>
+#include <stdint.h>
+#include <unistd.h>
+#include <errno.h>
+#include <syslog.h>
+#include <assert.h>
+
+#include "libdevmapper.h"
+#include "list.h"
+#include "lvm-types.h"
+#include "libdlm.h"
+#include "clvm.h"
+#include "clvmd-comms.h"
+#include "clvmd.h"
+#include "lvm-functions.h"
+
+/* LVM2 headers */
+#include "toolcontext.h"
+#include "log.h"
+#include "activate.h"
+#include "locking.h"
+
+static struct cmd_context *cmd = NULL;
+static struct dm_hash_table *lv_hash = NULL;
+static pthread_mutex_t lv_hash_lock;
+
+struct lv_info {
+	int lock_id;
+	int lock_mode;
+};
+
+/* Return the mode a lock is currently held at (or -1 if not held) */
+static int get_current_lock(char *resource)
+{
+	struct lv_info *lvi;
+
+	pthread_mutex_lock(&lv_hash_lock);
+	lvi = dm_hash_lookup(lv_hash, resource);
+	pthread_mutex_unlock(&lv_hash_lock);
+	if (lvi) {
+		return lvi->lock_mode;
+	} else {
+		return -1;
+	}
+}
+
+/* Called at shutdown to tidy the lockspace */
+void unlock_all()
+{
+	struct dm_hash_node *v;
+
+	pthread_mutex_lock(&lv_hash_lock);
+	dm_hash_iterate(v, lv_hash) {
+		struct lv_info *lvi = dm_hash_get_data(lv_hash, v);
+
+		sync_unlock(dm_hash_get_key(lv_hash, v), lvi->lock_id);
+	}
+	pthread_mutex_unlock(&lv_hash_lock);
+}
+
+/* Gets a real lock and keeps the info in the hash table */
+int hold_lock(char *resource, int mode, int flags)
+{
+	int status;
+	int saved_errno;
+	struct lv_info *lvi;
+
+	flags &= LKF_NOQUEUE;	/* Only LKF_NOQUEUE is valid here */
+
+	pthread_mutex_lock(&lv_hash_lock);
+	lvi = dm_hash_lookup(lv_hash, resource);
+	pthread_mutex_unlock(&lv_hash_lock);
+	if (lvi) {
+		/* Already exists - convert it */
+		status =
+		    sync_lock(resource, mode, LKF_CONVERT | flags,
+			      &lvi->lock_id);
+		saved_errno = errno;
+		if (!status)
+			lvi->lock_mode = mode;
+
+		if (status) {
+			DEBUGLOG("hold_lock. convert to %d failed: %s\n", mode,
+				 strerror(errno));
+		}
+		errno = saved_errno;
+	} else {
+		lvi = malloc(sizeof(struct lv_info));
+		if (!lvi)
+			return -1;
+
+		lvi->lock_mode = mode;
+		status = sync_lock(resource, mode, flags, &lvi->lock_id);
+		saved_errno = errno;
+		if (status) {
+			free(lvi);
+			DEBUGLOG("hold_lock. lock at %d failed: %s\n", mode,
+				 strerror(errno));
+		} else {
+		        pthread_mutex_lock(&lv_hash_lock);
+			dm_hash_insert(lv_hash, resource, lvi);
+			pthread_mutex_unlock(&lv_hash_lock);
+		}
+		errno = saved_errno;
+	}
+	return status;
+}
+
+/* Unlock and remove it from the hash table */
+int hold_unlock(char *resource)
+{
+	struct lv_info *lvi;
+	int status;
+	int saved_errno;
+
+	pthread_mutex_lock(&lv_hash_lock);
+	lvi = dm_hash_lookup(lv_hash, resource);
+	pthread_mutex_unlock(&lv_hash_lock);
+	if (!lvi) {
+		DEBUGLOG("hold_unlock, lock not already held\n");
+		return 0;
+	}
+
+	status = sync_unlock(resource, lvi->lock_id);
+	saved_errno = errno;
+	if (!status) {
+	    	pthread_mutex_lock(&lv_hash_lock);
+		dm_hash_remove(lv_hash, resource);
+		pthread_mutex_unlock(&lv_hash_lock);
+		free(lvi);
+	} else {
+		DEBUGLOG("hold_unlock. unlock failed(%d): %s\n", status,
+			 strerror(errno));
+	}
+
+	errno = saved_errno;
+	return status;
+}
+
+/* Watch the return codes here.
+   liblvm API functions return 1(true) for success, 0(false) for failure and don't set errno.
+   libdlm API functions return 0 for success, -1 for failure and do set errno.
+   These functions here return 0 for success or >0 for failure (where the retcode is errno)
+*/
+
+/* Activate LV exclusive or non-exclusive */
+static int do_activate_lv(char *resource, unsigned char lock_flags, int mode)
+{
+	int oldmode;
+	int status;
+	int activate_lv;
+	int exclusive = 0;
+	struct lvinfo lvi;
+
+	/* Is it already open ? */
+	oldmode = get_current_lock(resource);
+	if (oldmode == mode) {
+		return 0;	/* Nothing to do */
+	}
+
+	/* Does the config file want us to activate this LV ? */
+	if (!lv_activation_filter(cmd, resource, &activate_lv))
+		return EIO;
+
+	if (!activate_lv)
+		return 0;	/* Success, we did nothing! */
+
+	/* Do we need to activate exclusively? */
+	if ((activate_lv == 2) || (mode == LKM_EXMODE)) {
+		exclusive = 1;
+		mode = LKM_EXMODE;
+	}
+
+	/* Try to get the lock if it's a clustered volume group */
+	if (lock_flags & LCK_CLUSTER_VG) {
+		status = hold_lock(resource, mode, LKF_NOQUEUE);
+		if (status)
+			return errno;
+	}
+
+	/* If it's suspended then resume it */
+	if (!lv_info_by_lvid(cmd, resource, &lvi, 0))
+		return EIO;
+
+	if (lvi.suspended)
+		if (!lv_resume(cmd, resource))
+			return EIO;
+
+	/* Now activate it */
+	if (!lv_activate(cmd, resource, exclusive))
+		return EIO;
+
+	return 0;
+}
+
+/* Resume the LV if it was active */
+static int do_resume_lv(char *resource)
+{
+	int oldmode;
+
+	/* Is it open ? */
+	oldmode = get_current_lock(resource);
+	if (oldmode == -1) {
+		DEBUGLOG("do_deactivate_lock, lock not already held\n");
+		return 0;	/* We don't need to do anything */
+	}
+
+	if (!lv_resume_if_active(cmd, resource))
+		return EIO;
+
+	return 0;
+}
+
+/* Suspend the device if active */
+static int do_suspend_lv(char *resource)
+{
+	int oldmode;
+	struct lvinfo lvi;
+
+	/* Is it open ? */
+	oldmode = get_current_lock(resource);
+	if (oldmode == -1) {
+		DEBUGLOG("do_suspend_lv, lock held at %d\n", oldmode);
+		return 0; /* Not active, so it's OK */
+	}
+
+	/* Only suspend it if it exists */
+	if (!lv_info_by_lvid(cmd, resource, &lvi, 0))
+		return EIO;
+
+	if (lvi.exists) {
+		if (!lv_suspend_if_active(cmd, resource)) {
+			return EIO;
+		}
+	}
+	return 0;
+}
+
+static int do_deactivate_lv(char *resource, unsigned char lock_flags)
+{
+	int oldmode;
+	int status;
+
+	/* Is it open ? */
+	oldmode = get_current_lock(resource);
+	if (oldmode == -1 && (lock_flags & LCK_CLUSTER_VG)) {
+		DEBUGLOG("do_deactivate_lock, lock not already held\n");
+		return 0;	/* We don't need to do anything */
+	}
+
+	if (!lv_deactivate(cmd, resource))
+		return EIO;
+
+	if (lock_flags & LCK_CLUSTER_VG) {
+		status = hold_unlock(resource);
+		if (status)
+			return errno;
+	}
+
+	return 0;
+}
+
+/* This is the LOCK_LV part that happens on all nodes in the cluster -
+   it is responsible for the interaction with device-mapper and LVM */
+int do_lock_lv(unsigned char command, unsigned char lock_flags, char *resource)
+{
+	int status = 0;
+
+	DEBUGLOG("do_lock_lv: resource '%s', cmd = 0x%x, flags = %x\n",
+		 resource, command, lock_flags);
+
+	if (!cmd->config_valid || config_files_changed(cmd)) {
+		/* Reinitialise various settings inc. logging, filters */
+		if (!refresh_toolcontext(cmd)) {
+			log_error("Updated config file invalid. Aborting.");
+			return EINVAL;
+		}
+	}
+
+	switch (command) {
+	case LCK_LV_EXCLUSIVE:
+		status = do_activate_lv(resource, lock_flags, LKM_EXMODE);
+		break;
+
+	case LCK_LV_SUSPEND:
+		status = do_suspend_lv(resource);
+		break;
+
+	case LCK_UNLOCK:
+	case LCK_LV_RESUME:	/* if active */
+		status = do_resume_lv(resource);
+		break;
+
+	case LCK_LV_ACTIVATE:
+		status = do_activate_lv(resource, lock_flags, LKM_CRMODE);
+		break;
+
+	case LCK_LV_DEACTIVATE:
+		status = do_deactivate_lv(resource, lock_flags);
+		break;
+
+	default:
+		DEBUGLOG("Invalid LV command 0x%x\n", command);
+		status = EINVAL;
+		break;
+	}
+
+	/* clean the pool for another command */
+	dm_pool_empty(cmd->mem);
+
+	DEBUGLOG("Command return is %d\n", status);
+	return status;
+}
+
+/* Functions to do on the local node only BEFORE the cluster-wide stuff above happens */
+int pre_lock_lv(unsigned char command, unsigned char lock_flags, char *resource)
+{
+	/* Nearly all the stuff happens cluster-wide. Apart from SUSPEND. Here we get the
+	   lock out on this node (because we are the node modifying the metadata)
+	   before suspending cluster-wide.
+	 */
+	if (command == LCK_LV_SUSPEND) {
+		DEBUGLOG("pre_lock_lv: resource '%s', cmd = 0x%x, flags = %d\n",
+			 resource, command, lock_flags);
+
+		if (hold_lock(resource, LKM_PWMODE, LKF_NOQUEUE))
+			return errno;
+	}
+	return 0;
+}
+
+/* Functions to do on the local node only AFTER the cluster-wide stuff above happens */
+int post_lock_lv(unsigned char command, unsigned char lock_flags,
+		 char *resource)
+{
+	/* Opposite of above, done on resume after a metadata update */
+	if (command == LCK_LV_RESUME) {
+		int oldmode;
+
+		DEBUGLOG
+		    ("post_lock_lv: resource '%s', cmd = 0x%x, flags = %d\n",
+		     resource, command, lock_flags);
+
+		/* If the lock state is PW then restore it to what it was */
+		oldmode = get_current_lock(resource);
+		if (oldmode == LKM_PWMODE) {
+			struct lvinfo lvi;
+
+			if (!lv_info_by_lvid(cmd, resource, &lvi, 0))
+				return EIO;
+
+			if (lvi.exists) {
+				if (hold_lock(resource, LKM_CRMODE, 0))
+					return errno;
+			} else {
+				if (hold_unlock(resource))
+					return errno;
+			}
+		}
+	}
+	return 0;
+}
+
+/* Check if a VG is un use by LVM1 so we don't stomp on it */
+int do_check_lvm1(char *vgname)
+{
+	int status;
+
+	status = check_lvm1_vg_inactive(cmd, vgname);
+
+	return status == 1 ? 0 : EBUSY;
+}
+
+
+/* Only called at gulm startup. Drop any leftover VG or P_orphan locks
+   that might be hanging around if we died for any reason
+*/
+static void drop_vg_locks()
+{
+	char vg[128];
+	char line[255];
+	FILE *vgs =
+	    popen
+	    ("lvm pvs --nolocking --noheadings -o vg_name", "r");
+
+	sync_unlock("P_orphans", LCK_EXCL);
+
+	if (!vgs)
+		return;
+
+	while (fgets(line, sizeof(line), vgs)) {
+		char *vgend;
+		char *vgstart;
+
+		if (line[strlen(line)-1] == '\n')
+			line[strlen(line)-1] = '\0';
+
+		vgstart = line + strspn(line, " ");
+		vgend = vgstart + strcspn(vgstart, " ");
+		*vgend = '\0';
+
+		if (strncmp(vgstart, "WARNING:", 8) == 0)
+			continue;
+
+		sprintf(vg, "V_%s", vgstart);
+		sync_unlock(vg, LCK_EXCL);
+
+	}
+	fclose(vgs);
+}
+
+/*
+ * Ideally, clvmd should be started before any LVs are active
+ * but this may not be the case...
+ * I suppose this also comes in handy if clvmd crashes, not that it would!
+ */
+static void *get_initial_state()
+{
+	char lv[64], vg[64], flags[25], vg_flags[25];
+	char uuid[65];
+	char line[255];
+	FILE *lvs =
+	    popen
+	    ("lvm lvs --nolocking --noheadings -o vg_uuid,lv_uuid,lv_attr,vg_attr",
+	     "r");
+
+	if (!lvs)
+		return NULL;
+
+	while (fgets(line, sizeof(line), lvs)) {
+	        if (sscanf(line, "%s %s %s %s\n", vg, lv, flags, vg_flags) == 4) {
+
+			/* States: s:suspended a:active S:dropped snapshot I:invalid snapshot */
+		        if (strlen(vg) == 38 &&                         /* is is a valid UUID ? */
+			    (flags[4] == 'a' || flags[4] == 's') &&	/* is it active or suspended? */
+			    vg_flags[5] == 'c') {			/* is it clustered ? */
+				/* Convert hyphen-separated UUIDs into one */
+				memcpy(&uuid[0], &vg[0], 6);
+				memcpy(&uuid[6], &vg[7], 4);
+				memcpy(&uuid[10], &vg[12], 4);
+				memcpy(&uuid[14], &vg[17], 4);
+				memcpy(&uuid[18], &vg[22], 4);
+				memcpy(&uuid[22], &vg[27], 4);
+				memcpy(&uuid[26], &vg[32], 6);
+				memcpy(&uuid[32], &lv[0], 6);
+				memcpy(&uuid[38], &lv[7], 4);
+				memcpy(&uuid[42], &lv[12], 4);
+				memcpy(&uuid[46], &lv[17], 4);
+				memcpy(&uuid[50], &lv[22], 4);
+				memcpy(&uuid[54], &lv[27], 4);
+				memcpy(&uuid[58], &lv[32], 6);
+				uuid[64] = '\0';
+
+				DEBUGLOG("getting initial lock for %s\n", uuid);
+				hold_lock(uuid, LKM_CRMODE, LKF_NOQUEUE);
+			}
+		}
+	}
+	fclose(lvs);
+	return NULL;
+}
+
+/* This checks some basic cluster-LVM configuration stuff */
+static void check_config()
+{
+	int locking_type;
+
+	locking_type = find_config_int(cmd->cft->root, "global/locking_type", 1);
+
+	if (locking_type == 3) /* compiled-in cluster support */
+		return;
+
+	if (locking_type == 2) { /* External library, check name */
+		const char *libname;
+
+		libname = find_config_str(cmd->cft->root, "global/locking_library",
+					  "");
+		if (strstr(libname, "liblvm2clusterlock.so"))
+			return;
+
+		log_error("Incorrect LVM locking library specified in lvm.conf, cluster operations may not work.");
+		return;
+	}
+	log_error("locking_type not set correctly in lvm.conf, cluster operations will not work.");
+}
+
+void init_lvhash()
+{
+	/* Create hash table for keeping LV locks & status */
+	lv_hash = dm_hash_create(100);
+	pthread_mutex_init(&lv_hash_lock, NULL);
+}
+
+/* Called to initialise the LVM context of the daemon */
+int init_lvm(int using_gulm)
+{
+	if (!(cmd = create_toolcontext(NULL))) {
+		log_error("Failed to allocate command context");
+		return 0;
+	}
+
+	/* Use LOG_DAEMON for syslog messages instead of LOG_USER */
+	init_syslog(LOG_DAEMON);
+	init_debug(_LOG_ERR);
+
+	/* Check lvm.conf is setup for cluster-LVM */
+	check_config();
+
+	/* Remove any non-LV locks that may have been left around */
+	if (using_gulm)
+		drop_vg_locks();
+
+	get_initial_state();
+
+	return 1;
+}

daemons/clvmd/lvm-functions.h

@@ -0,0 +1,35 @@
+/*
+ * Copyright (C) 2002-2004 Sistina Software, Inc. All rights reserved.
+ * Copyright (C) 2004 Red Hat, Inc. All rights reserved.
+ *
+ * This file is part of LVM2.
+ *
+ * This copyrighted material is made available to anyone wishing to use,
+ * modify, copy, or redistribute it subject to the terms and conditions
+ * of the GNU General Public License v.2.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+/* Functions in lvm-functions.c */
+
+#ifndef _LVM_FUNCTIONS_H
+#define _LVM_FUNCTIONS_H
+
+extern int pre_lock_lv(unsigned char lock_cmd, unsigned char lock_flags,
+		       char *resource);
+extern int do_lock_lv(unsigned char lock_cmd, unsigned char lock_flags,
+		      char *resource);
+extern int post_lock_lv(unsigned char lock_cmd, unsigned char lock_flags,
+			char *resource);
+extern int do_check_lvm1(char *vgname);
+extern int init_lvm(int using_gulm);
+extern void init_lvhash(void);
+
+extern int hold_unlock(char *resource);
+extern int hold_lock(char *resource, int mode, int flags);
+extern void unlock_all(void);
+
+#endif

daemons/clvmd/system-lv.c

@@ -0,0 +1,371 @@
+/*
+ * Copyright (C) 2002-2004 Sistina Software, Inc. All rights reserved.
+ * Copyright (C) 2004 Red Hat, Inc. All rights reserved.
+ *
+ * This file is part of LVM2.
+ *
+ * This copyrighted material is made available to anyone wishing to use,
+ * modify, copy, or redistribute it subject to the terms and conditions
+ * of the GNU General Public License v.2.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+/* Routines dealing with the System LV */
+
+#include <pthread.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/socket.h>
+#include <sys/uio.h>
+#include <sys/un.h>
+#include <sys/time.h>
+#include <sys/ioctl.h>
+#include <sys/mount.h>
+#include <sys/utsname.h>
+#include <syslog.h>
+#include <netinet/in.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <stddef.h>
+#include <signal.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <dirent.h>
+#include <errno.h>
+#include <mntent.h>
+
+#include "libdlm.h"
+#include "log.h"
+#include "list.h"
+#include "locking.h"
+#include "system-lv.h"
+#include "clvm.h"
+#include "clvmd-comms.h"
+#include "clvmd.h"
+#ifdef HAVE_CCS
+#include "ccs.h"
+#endif
+
+#define SYSTEM_LV_FILESYSTEM "ext2"
+#define SYSTEM_LV_MOUNTPOINT "/tmp/.clvmd-XXXXXX"
+
+extern char *config_filename(void);
+
+static char system_lv_name[PATH_MAX] = { '\0' };
+static char mount_point[PATH_MAX] = { '\0' };
+static int mounted = 0;
+static int mounted_rw = 0;
+static int lockid;
+static const char *lock_name = "CLVM_SYSTEM_LV";
+
+/* Look in /proc/mounts or (as a last resort) /etc/mtab to
+   see if the system-lv is mounted. If it is mounted and we
+   think it's not then abort because we don't have the right
+   lock status and we don't know what other processes are doing with it.
+
+   Returns 1 for mounted, 0 for not mounted so it matches the condition
+   of the "mounted" static variable above.
+*/
+static int is_really_mounted(void)
+{
+	FILE *mountfile;
+	struct mntent *ment;
+
+	mountfile = setmntent("/proc/mounts", "r");
+	if (!mountfile) {
+		mountfile = setmntent("/etc/mtab", "r");
+		if (!mountfile) {
+			log_error("Unable to open /proc/mounts or /etc/mtab");
+			return -1;
+		}
+	}
+
+	/* Look for system LV name in the file */
+	do {
+		ment = getmntent(mountfile);
+		if (ment) {
+			if (strcmp(ment->mnt_fsname, system_lv_name) == 0) {
+				endmntent(mountfile);
+				return 1;
+			}
+		}
+	}
+	while (ment);
+
+	endmntent(mountfile);
+	return 0;
+}
+
+/* Get the system LV name from the config file */
+static int find_system_lv(void)
+{
+	if (system_lv_name[0] == '\0') {
+#ifdef HAVE_CCS
+		int error;
+		ccs_node_t *ctree;
+
+		/* Read the cluster config file */
+		/* Open the config file */
+		error = open_ccs_file(&ctree, "clvm.ccs");
+		if (error) {
+			perror("reading config file");
+			return -1;
+		}
+
+		strcpy(system_lv_name, find_ccs_str(ctree,
+						    "cluster/systemlv", '/',
+						    "/dev/vg/system_lv"));
+
+		/* Finished with config file */
+		close_ccs_file(ctree);
+#else
+		if (getenv("CLVMD_SYSTEM_LV"))
+			strcpy(system_lv_name, getenv("CLVMD_SYSTEM_LV"));
+		else
+			return -1;
+#endif
+	}
+
+	/* See if it has been mounted outside our control */
+	if (is_really_mounted() != mounted) {
+		log_error
+		    ("The system LV state has been mounted/umounted outside the control of clvmd\n"
+		     "it cannot not be used for cluster communications until this is fixed.\n");
+		return -1;
+	}
+	return 0;
+}
+
+/* No prizes */
+int system_lv_umount(void)
+{
+	if (!mounted)
+		return 0;
+
+	if (umount(mount_point) < 0) {
+		log_error("umount of system LV (%s) failed: %m\n",
+			  system_lv_name);
+		return -1;
+	}
+
+	sync_unlock(lock_name, lockid);
+	mounted = 0;
+
+	/* Remove the mount point */
+	rmdir(mount_point);
+
+	return 0;
+}
+
+int system_lv_mount(int readwrite)
+{
+	int status;
+	int saved_errno;
+	int fd;
+
+	if (find_system_lv()) {
+		errno = EBUSY;
+		return -1;
+	}
+
+	/* Is it already mounted suitably? */
+	if (mounted) {
+		if (!readwrite || (readwrite && mounted_rw)) {
+			return 0;
+		} else {
+			/* Mounted RO and we need RW */
+			if (system_lv_umount() < 0)
+				return -1;
+		}
+	}
+
+	/* Randomize the mount point */
+	strcpy(mount_point, SYSTEM_LV_MOUNTPOINT);
+	fd = mkstemp(mount_point);
+	if (fd < 0) {
+		log_error("mkstemp for system LV mount point failed: %m\n");
+		return -1;
+	}
+
+	/* Race condition here but there's no mkstemp for directories */
+	close(fd);
+	unlink(mount_point);
+	mkdir(mount_point, 0600);
+
+	/* Make sure we have a system-lv lock */
+	status =
+	    sync_lock(lock_name, (readwrite) ? LKM_EXMODE : LKM_CRMODE, 0,
+		      &lockid);
+	if (status < 0)
+		return -1;
+
+	/* Mount it */
+	if (mount(system_lv_name, mount_point, SYSTEM_LV_FILESYSTEM,
+		  MS_MGC_VAL | MS_NOSUID | MS_NODEV | MS_NOEXEC | MS_SYNCHRONOUS
+		  | (readwrite ? 0 : MS_RDONLY), NULL) < 0) {
+		/* mount(2) returns EINVAL if the volume has no FS on it. So, if we want to
+		   write to it we try to make a filesystem in it and retry the mount */
+		if (errno == EINVAL && readwrite) {
+			char cmd[256];
+
+			log_error("Attempting mkfs on system LV device %s\n",
+				  system_lv_name);
+			snprintf(cmd, sizeof(cmd), "/sbin/mkfs -t %s %s",
+				 SYSTEM_LV_FILESYSTEM, system_lv_name);
+			system(cmd);
+
+			if (mount
+			    (system_lv_name, mount_point, SYSTEM_LV_FILESYSTEM,
+			     MS_MGC_VAL | MS_NOSUID | MS_NODEV | MS_NOEXEC |
+			     MS_SYNCHRONOUS | (readwrite ? 0 : MS_RDONLY),
+			     NULL) == 0)
+				goto mounted;
+		}
+
+		saved_errno = errno;
+		log_error("mount of system LV (%s, %s, %s) failed: %m\n",
+			  system_lv_name, mount_point, SYSTEM_LV_FILESYSTEM);
+		sync_unlock(lock_name, lockid);
+		errno = saved_errno;
+		return -1;
+	}
+
+      mounted:
+/* Set the internal flags */
+	mounted = 1;
+	mounted_rw = readwrite;
+
+	return 0;
+}
+
+/* Erase *all* files in the root directory of the system LV.
+   This *MUST* be called with an appropriate lock held!
+   The LV is left mounted RW because it is assumed that the
+   caller wants to write something here after clearing some space */
+int system_lv_eraseall(void)
+{
+	DIR *dir;
+	struct dirent *ent;
+	char fname[PATH_MAX];
+
+	/* Must be mounted R/W */
+	system_lv_mount(1);
+
+	dir = opendir(mount_point);
+	if (!dir)
+		return -1;
+
+	while ((ent = readdir(dir))) {
+		struct stat st;
+		snprintf(fname, sizeof(fname), "%s/%s", mount_point,
+			 ent->d_name);
+
+		if (stat(fname, &st)) {
+			if (S_ISREG(st.st_mode))
+				unlink(fname);
+		}
+	}
+	closedir(dir);
+	return 0;
+}
+
+/* This is a "high-level" routine - it mounts the system LV, writes
+   the data into a file named after this node and then umounts the LV
+   again */
+int system_lv_write_data(char *data, ssize_t len)
+{
+	struct utsname nodeinfo;
+	char fname[PATH_MAX];
+	int outfile;
+	ssize_t thiswrite;
+	ssize_t written;
+
+	if (system_lv_mount(1))
+		return -1;
+
+	/* Build the file name we are goingto use. */
+	uname(&nodeinfo);
+	snprintf(fname, sizeof(fname), "%s/%s", mount_point, nodeinfo.nodename);
+
+	/* Open the file for output */
+	outfile = open(fname, O_RDWR | O_CREAT | O_TRUNC, 0600);
+	if (outfile < 0) {
+		int saved_errno = errno;
+		system_lv_umount();
+		errno = saved_errno;
+		return -1;
+	}
+
+	written = 0;
+	do {
+		thiswrite = write(outfile, data + written, len - written);
+		if (thiswrite > 0)
+			written += thiswrite;
+
+	} while (written < len && thiswrite > 0);
+
+	close(outfile);
+
+	system_lv_umount();
+	return (thiswrite < 0) ? -1 : 0;
+}
+
+/* This is a "high-level" routine - it mounts the system LV, reads
+   the data from a named file and then umounts the LV
+   again */
+int system_lv_read_data(char *fname_base, char *data, ssize_t *len)
+{
+	char fname[PATH_MAX];
+	int outfile;
+	struct stat st;
+	ssize_t filesize;
+	ssize_t thisread;
+	ssize_t readbytes;
+
+	if (system_lv_mount(0))
+		return -1;
+
+	/* Build the file name we are going to use. */
+	snprintf(fname, sizeof(fname), "%s/%s", mount_point, fname_base);
+
+	/* Get the file size and stuff. Actually we only need the file size but
+	   this will also check that the file exists */
+	if (stat(fname, &st) < 0) {
+		int saved_errno = errno;
+
+		log_error("stat of file %s on system LV failed: %m\n", fname);
+		system_lv_umount();
+		errno = saved_errno;
+		return -1;
+	}
+	filesize = st.st_size;
+
+	outfile = open(fname, O_RDONLY);
+	if (outfile < 0) {
+		int saved_errno = errno;
+
+		log_error("open of file %s on system LV failed: %m\n", fname);
+		system_lv_umount();
+		errno = saved_errno;
+		return -1;
+	}
+
+	readbytes = 0;
+	do {
+		thisread =
+		    read(outfile, data + readbytes, filesize - readbytes);
+		if (thisread > 0)
+			readbytes += thisread;
+
+	} while (readbytes < filesize && thisread > 0);
+
+	close(outfile);
+
+	system_lv_umount();
+
+	*len = readbytes;
+	return (thisread < 0) ? -1 : 0;
+}

daemons/clvmd/system-lv.h

@@ -0,0 +1,30 @@
+/*
+ * Copyright (C) 2002-2004 Sistina Software, Inc. All rights reserved.
+ * Copyright (C) 2004 Red Hat, Inc. All rights reserved.
+ *
+ * This file is part of LVM2.
+ *
+ * This copyrighted material is made available to anyone wishing to use,
+ * modify, copy, or redistribute it subject to the terms and conditions
+ * of the GNU General Public License v.2.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#ifndef _CLVM_SYSTEM_LV_H
+#define _CLVM_SYSTEM_LV_H
+
+/* Prototypes for System-LV functions */
+
+/* "low-level" functions */
+extern int system_lv_umount(void);
+extern int system_lv_mount(int readwrite);
+extern int system_lv_eraseall(void);
+
+/* "high-level" functions */
+extern int system_lv_write_data(char *data, ssize_t len);
+extern int system_lv_read_data(char *fname_base, char *data, ssize_t *len);
+
+#endif

daemons/clvmd/tcp-comms.c

@@ -0,0 +1,505 @@
+/******************************************************************************
+*******************************************************************************
+**
+**  Copyright (C) Sistina Software, Inc.  2002-2003  All rights reserved.
+**  Copyright (C) 2004-2005 Red Hat, Inc. All rights reserved.
+**
+*******************************************************************************
+******************************************************************************/
+
+/* This provides the inter-clvmd communications for a system without CMAN.
+   There is a listening TCP socket which accepts new connections in the
+   normal way.
+   It can also make outgoing connnections to the other clvmd nodes.
+*/
+
+
+#include <pthread.h>
+#include <sys/types.h>
+#include <sys/utsname.h>
+#include <sys/ioctl.h>
+#include <sys/socket.h>
+#include <sys/stat.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <fcntl.h>
+#include <string.h>
+#include <stddef.h>
+#include <stdint.h>
+#include <unistd.h>
+#include <errno.h>
+#include <syslog.h>
+#include <netdb.h>
+#include <assert.h>
+
+#include "libdevmapper.h"
+#include "clvm.h"
+#include "clvmd-comms.h"
+#include "clvmd.h"
+#include "clvmd-gulm.h"
+
+#define DEFAULT_TCP_PORT 21064
+
+static int listen_fd = -1;
+static int tcp_port;
+struct dm_hash_table *sock_hash;
+
+static int get_our_ip_address(char *addr, int *family);
+static int read_from_tcpsock(struct local_client *fd, char *buf, int len, char *csid,
+			     struct local_client **new_client);
+
+/* Called by init_cluster() to open up the listening socket */
+int init_comms(unsigned short port)
+{
+    struct sockaddr_in6 addr;
+
+    sock_hash = dm_hash_create(100);
+    tcp_port = port ? port : DEFAULT_TCP_PORT;
+
+    listen_fd = socket(AF_INET6, SOCK_STREAM, 0);
+
+    if (listen_fd < 0)
+    {
+	return -1;
+    }
+    else
+    {
+	int one = 1;
+	setsockopt(listen_fd, SOL_SOCKET, SO_REUSEADDR, &one, sizeof(int));
+	setsockopt(listen_fd, SOL_SOCKET, SO_KEEPALIVE, &one, sizeof(int));
+    }
+
+    memset(&addr, 0, sizeof(addr)); // Bind to INADDR_ANY
+    addr.sin6_family = AF_INET6;
+    addr.sin6_port = htons(tcp_port);
+
+    if (bind(listen_fd, (struct sockaddr *)&addr, sizeof(addr)) < 0)
+    {
+	DEBUGLOG("Can't bind to port: %s\n", strerror(errno));
+	syslog(LOG_ERR, "Can't bind to port %d, is clvmd already running ?", tcp_port);
+	close(listen_fd);
+	return -1;
+    }
+
+    listen(listen_fd, 5);
+
+    /* Set Close-on-exec */
+    fcntl(listen_fd, F_SETFD, 1);
+
+    return 0;
+}
+
+void tcp_remove_client(char *csid)
+ {
+    struct local_client *client;
+    DEBUGLOG("tcp_remove_client\n");
+
+    /* Don't actually close the socket here - that's the
+       job of clvmd.c whch will do the job when it notices the
+       other end has gone. We just need to remove the client(s) from
+       the hash table so we don't try to use it for sending any more */
+    client = dm_hash_lookup_binary(sock_hash, csid, GULM_MAX_CSID_LEN);
+    if (client)
+    {
+	dm_hash_remove_binary(sock_hash, csid, GULM_MAX_CSID_LEN);
+	client->removeme = 1;
+	close(client->fd);
+    }
+
+    /* Look for a mangled one too */
+    csid[0] ^= 0x80;
+
+    client = dm_hash_lookup_binary(sock_hash, csid, GULM_MAX_CSID_LEN);
+    if (client)
+    {
+	dm_hash_remove_binary(sock_hash, csid, GULM_MAX_CSID_LEN);
+	client->removeme = 1;
+	close(client->fd);
+    }
+
+    /* Put it back as we found it */
+    csid[0] ^= 0x80;
+}
+
+int alloc_client(int fd, char *csid, struct local_client **new_client)
+{
+    struct local_client *client;
+
+    DEBUGLOG("alloc_client %d csid = %s\n", fd, print_csid(csid));
+
+    /* Create a local_client and return it */
+    client = malloc(sizeof(struct local_client));
+    if (!client)
+    {
+	DEBUGLOG("malloc failed\n");
+	return -1;
+    }
+
+    memset(client, 0, sizeof(struct local_client));
+    client->fd = fd;
+    client->type = CLUSTER_DATA_SOCK;
+    client->callback = read_from_tcpsock;
+    if (new_client)
+	*new_client = client;
+
+    /* Add to our list of node sockets */
+    if (dm_hash_lookup_binary(sock_hash, csid, GULM_MAX_CSID_LEN))
+    {
+	DEBUGLOG("alloc_client mangling CSID for second connection\n");
+	/* This is a duplicate connection but we can't close it because
+	   the other end may already have started sending.
+	   So, we mangle the IP address and keep it, all sending will
+	   go out of the main FD
+	*/
+	csid[0] ^= 0x80;
+	client->bits.net.flags = 1; /* indicate mangled CSID */
+
+        /* If it still exists then kill the connection as we should only
+           ever have one incoming connection from each node */
+        if (dm_hash_lookup_binary(sock_hash, csid, GULM_MAX_CSID_LEN))
+        {
+	    DEBUGLOG("Multiple incoming connections from node\n");
+            syslog(LOG_ERR, " Bogus incoming connection from %d.%d.%d.%d\n", csid[0],csid[1],csid[2],csid[3]);
+
+	    free(client);
+            errno = ECONNREFUSED;
+            return -1;
+        }
+    }
+    dm_hash_insert_binary(sock_hash, csid, GULM_MAX_CSID_LEN, client);
+
+    return 0;
+}
+
+int get_main_gulm_cluster_fd()
+{
+    return listen_fd;
+}
+
+
+/* Read on main comms (listen) socket, accept it */
+int cluster_fd_gulm_callback(struct local_client *fd, char *buf, int len, char *csid,
+			struct local_client **new_client)
+{
+    int newfd;
+    struct sockaddr_in6 addr;
+    socklen_t addrlen = sizeof(addr);
+    int status;
+    char name[GULM_MAX_CLUSTER_MEMBER_NAME_LEN];
+
+    DEBUGLOG("cluster_fd_callback\n");
+    *new_client = NULL;
+    newfd = accept(listen_fd, (struct sockaddr *)&addr, &addrlen);
+
+    DEBUGLOG("cluster_fd_callback, newfd=%d (errno=%d)\n", newfd, errno);
+    if (!newfd)
+    {
+	syslog(LOG_ERR, "error in accept: %m");
+	errno = EAGAIN;
+	return -1; /* Don't return an error or clvmd will close the listening FD */
+    }
+
+    /* Check that the client is a member of the cluster
+       and reject if not.
+    */
+    if (gulm_name_from_csid((char *)&addr.sin6_addr, name) < 0)
+    {
+	syslog(LOG_ERR, "Got connect from non-cluster node %s\n",
+	       print_csid((char *)&addr.sin6_addr));
+	DEBUGLOG("Got connect from non-cluster node %s\n",
+		 print_csid((char *)&addr.sin6_addr));
+	close(newfd);
+
+	errno = EAGAIN;
+	return -1;
+    }
+
+    status = alloc_client(newfd, (char *)&addr.sin6_addr, new_client);
+    if (status)
+    {
+	DEBUGLOG("cluster_fd_callback, alloc_client failed, status = %d\n", status);
+	close(newfd);
+	/* See above... */
+	errno = EAGAIN;
+	return -1;
+    }
+    DEBUGLOG("cluster_fd_callback, returning %d, %p\n", newfd, *new_client);
+    return newfd;
+}
+
+/* Try to get at least 'len' bytes from the socket */
+static int really_read(int fd, char *buf, int len)
+{
+	int got, offset;
+
+	got = offset = 0;
+
+	do {
+		got = read(fd, buf+offset, len-offset);
+		DEBUGLOG("really_read. got %d bytes\n", got);
+		offset += got;
+	} while (got > 0 && offset < len);
+
+	if (got < 0)
+		return got;
+	else
+		return offset;
+}
+
+
+static int read_from_tcpsock(struct local_client *client, char *buf, int len, char *csid,
+			     struct local_client **new_client)
+{
+    struct sockaddr_in6 addr;
+    socklen_t slen = sizeof(addr);
+    struct clvm_header *header = (struct clvm_header *)buf;
+    int status;
+    uint32_t arglen;
+
+    DEBUGLOG("read_from_tcpsock fd %d\n", client->fd);
+    *new_client = NULL;
+
+    /* Get "csid" */
+    getpeername(client->fd, (struct sockaddr *)&addr, &slen);
+    memcpy(csid, &addr.sin6_addr, GULM_MAX_CSID_LEN);
+
+    /* Read just the header first, then get the rest if there is any.
+     * Stream sockets, sigh.
+     */
+    status = really_read(client->fd, buf, sizeof(struct clvm_header));
+    if (status > 0)
+    {
+	    int status2;
+
+	    arglen = ntohl(header->arglen);
+
+	    /* Get the rest */
+	    if (arglen && arglen < GULM_MAX_CLUSTER_MESSAGE)
+	    {
+		    status2 = really_read(client->fd, buf+status, arglen);
+		    if (status2 > 0)
+			    status += status2;
+		    else
+			    status = status2;
+	    }
+    }
+
+    DEBUGLOG("read_from_tcpsock, status = %d(errno = %d)\n", status, errno);
+
+    /* Remove it from the hash table if there's an error, clvmd will
+       remove the socket from its lists and free the client struct */
+    if (status == 0 ||
+	(status < 0 && errno != EAGAIN && errno != EINTR))
+    {
+	char remcsid[GULM_MAX_CSID_LEN];
+
+	memcpy(remcsid, csid, GULM_MAX_CSID_LEN);
+	close(client->fd);
+
+	/* If the csid was mangled, then make sure we remove the right entry */
+	if (client->bits.net.flags)
+	    remcsid[0] ^= 0x80;
+	dm_hash_remove_binary(sock_hash, remcsid, GULM_MAX_CSID_LEN);
+
+	/* Tell cluster manager layer */
+	add_down_node(remcsid);
+    }
+    else {
+	    gulm_add_up_node(csid);
+	    /* Send it back to clvmd */
+	    process_message(client, buf, status, csid);
+    }
+    return status;
+}
+
+int gulm_connect_csid(char *csid, struct local_client **newclient)
+{
+    int fd;
+    struct sockaddr_in6 addr;
+    int status;
+    int one = 1;
+
+    DEBUGLOG("Connecting socket\n");
+    fd = socket(PF_INET6, SOCK_STREAM, 0);
+
+    if (fd < 0)
+    {
+	syslog(LOG_ERR, "Unable to create new socket: %m");
+	return -1;
+    }
+
+    addr.sin6_family = AF_INET6;
+    memcpy(&addr.sin6_addr, csid, GULM_MAX_CSID_LEN);
+    addr.sin6_port = htons(tcp_port);
+
+    DEBUGLOG("Connecting socket %d\n", fd);
+    if (connect(fd, (struct sockaddr *)&addr, sizeof(struct sockaddr_in6)) < 0)
+    {
+	/* "Connection refused" is "normal" because clvmd may not yet be running
+	 * on that node.
+	 */
+	if (errno != ECONNREFUSED)
+	{
+	    syslog(LOG_ERR, "Unable to connect to remote node: %m");
+	}
+	DEBUGLOG("Unable to connect to remote node: %s\n", strerror(errno));
+	close(fd);
+	return -1;
+    }
+
+    /* Set Close-on-exec */
+    fcntl(fd, F_SETFD, 1);
+    setsockopt(fd, SOL_SOCKET, SO_KEEPALIVE, &one, sizeof(int));
+
+    status = alloc_client(fd, csid, newclient);
+    if (status)
+	close(fd);
+    else
+	add_client(*newclient);
+
+    /* If we can connect to it, it must be running a clvmd */
+    gulm_add_up_node(csid);
+    return status;
+}
+
+/* Send a message to a known CSID */
+static int tcp_send_message(void *buf, int msglen, unsigned char *csid, const char *errtext)
+{
+    int status;
+    struct local_client *client;
+    char ourcsid[GULM_MAX_CSID_LEN];
+
+    assert(csid);
+
+    DEBUGLOG("tcp_send_message, csid = %s, msglen = %d\n", print_csid(csid), msglen);
+
+    /* Don't connect to ourself */
+    get_our_gulm_csid(ourcsid);
+    if (memcmp(csid, ourcsid, GULM_MAX_CSID_LEN) == 0)
+	return msglen;
+
+    client = dm_hash_lookup_binary(sock_hash, csid, GULM_MAX_CSID_LEN);
+    if (!client)
+    {
+	status = gulm_connect_csid(csid, &client);
+	if (status)
+	    return -1;
+    }
+    DEBUGLOG("tcp_send_message, fd = %d\n", client->fd);
+
+    return write(client->fd, buf, msglen);
+}
+
+
+int gulm_cluster_send_message(void *buf, int msglen, char *csid, const char *errtext)
+{
+    int status=0;
+
+    DEBUGLOG("cluster send message, csid = %p, msglen = %d\n", csid, msglen);
+
+    /* If csid is NULL then send to all known (not just connected) nodes */
+    if (!csid)
+    {
+	void *context = NULL;
+	char loop_csid[GULM_MAX_CSID_LEN];
+
+	/* Loop round all gulm-known nodes */
+	while (get_next_node_csid(&context, loop_csid))
+	{
+	    status = tcp_send_message(buf, msglen, loop_csid, errtext);
+	    if (status == 0 ||
+		(status < 0 && (errno == EAGAIN || errno == EINTR)))
+		break;
+	}
+    }
+    else
+    {
+
+	status = tcp_send_message(buf, msglen, csid, errtext);
+    }
+    return status;
+}
+
+/* To get our own IP address we get the locally bound address of the
+   socket that's talking to GULM in the assumption(eek) that it will
+   be on the "right" network in a multi-homed system */
+static int get_our_ip_address(char *addr, int *family)
+{
+	struct utsname info;
+
+	uname(&info);
+	get_ip_address(info.nodename, addr);
+
+	return 0;
+}
+
+/* Public version of above for those that don't care what protocol
+   we're using */
+void get_our_gulm_csid(char *csid)
+{
+    static char our_csid[GULM_MAX_CSID_LEN];
+    static int got_csid = 0;
+
+    if (!got_csid)
+    {
+	int family;
+
+	memset(our_csid, 0, sizeof(our_csid));
+	if (get_our_ip_address(our_csid, &family))
+	{
+	    got_csid = 1;
+	}
+    }
+    memcpy(csid, our_csid, GULM_MAX_CSID_LEN);
+}
+
+static void map_v4_to_v6(struct in_addr *ip4, struct in6_addr *ip6)
+{
+   ip6->s6_addr32[0] = 0;
+   ip6->s6_addr32[1] = 0;
+   ip6->s6_addr32[2] = htonl(0xffff);
+   ip6->s6_addr32[3] = ip4->s_addr;
+}
+
+/* Get someone else's IP address from DNS */
+int get_ip_address(char *node, char *addr)
+{
+    struct hostent *he;
+
+    memset(addr, 0, GULM_MAX_CSID_LEN);
+
+    // TODO: what do we do about multi-homed hosts ???
+    // CCSs ip_interfaces solved this but some bugger removed it.
+
+    /* Try IPv6 first. The man page for gethostbyname implies that
+       it will lookup ip6 & ip4 names, but it seems not to */
+    he = gethostbyname2(node, AF_INET6);
+    if (he)
+    {
+	memcpy(addr, he->h_addr_list[0],
+	       he->h_length);
+    }
+    else
+    {
+	he = gethostbyname2(node, AF_INET);
+	if (!he)
+	    return -1;
+	map_v4_to_v6((struct in_addr *)he->h_addr_list[0], (struct in6_addr *)addr);
+    }
+
+    return 0;
+}
+
+char *print_csid(char *csid)
+{
+    static char buf[128];
+    int *icsid = (int *)csid;
+
+    sprintf(buf, "[%x.%x.%x.%x]",
+	    icsid[0],icsid[1],icsid[2],icsid[3]);
+
+    return buf;
+}

daemons/clvmd/tcp-comms.h

@@ -0,0 +1,13 @@
+#include <netinet/in.h>
+
+#define GULM_MAX_CLUSTER_MESSAGE 1600
+#define GULM_MAX_CSID_LEN sizeof(struct in6_addr)
+#define GULM_MAX_CLUSTER_MEMBER_NAME_LEN 128
+
+extern int init_comms(unsigned short);
+extern char *print_csid(char *);
+int get_main_gulm_cluster_fd(void);
+int cluster_fd_gulm_callback(struct local_client *fd, char *buf, int len, char *csid, struct local_client **new_client);
+int gulm_cluster_send_message(void *buf, int msglen, char *csid, const char *errtext);
+void get_our_gulm_csid(char *csid);
+int gulm_connect_csid(char *csid, struct local_client **newclient);

daemons/dmeventd/.exported_symbols

@@ -0,0 +1,5 @@
+dm_event_register
+dm_event_unregister
+dm_event_get_registered_device
+dm_event_set_timeout
+dm_event_get_timeout

daemons/dmeventd/Makefile.in

@@ -0,0 +1,55 @@
+#
+# Copyright (C) 2005 Red Hat, Inc. All rights reserved.
+#
+# This file is part of the device-mapper userspace tools.
+#
+# This copyrighted material is made available to anyone wishing to use,
+# modify, copy, or redistribute it subject to the terms and conditions
+# of the GNU Lesser General Public License v.2.1.
+#
+# You should have received a copy of the GNU Lesser General Public License
+# along with this program; if not, write to the Free Software Foundation,
+# Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+
+srcdir = @srcdir@
+top_srcdir = @top_srcdir@
+VPATH = @srcdir@
+
+SOURCES = libdevmapper-event.c \
+	  dmeventd.c
+
+LIB_STATIC = libdevmapper-event.a
+
+ifeq ("@LIB_SUFFIX@","dylib")
+  LIB_SHARED = libdevmapper-event.dylib
+else
+  LIB_SHARED = libdevmapper-event.so
+endif
+
+include ../make.tmpl
+
+CLDFLAGS += -ldl -ldevmapper -lpthread
+
+.PHONY: install_dynamic install_static
+
+INSTALL_TYPE = install_dynamic
+
+ifeq ("@STATIC_LINK@", "yes")
+  INSTALL_TYPE += install_static
+endif
+
+install: $(INSTALL_TYPE)
+
+install_dynamic: libdevmapper-event.$(LIB_SUFFIX)
+	$(INSTALL) -D $(OWNER) $(GROUP) -m 555 $(STRIP) $< \
+		$(libdir)/libdevmapper-event.$(LIB_SUFFIX).$(LIB_VERSION)
+	$(LN_S) -f libdevmapper-event.$(LIB_SUFFIX).$(LIB_VERSION) \
+		$(libdir)/libdevmapper-event.$(LIB_SUFFIX)
+	$(INSTALL) -D $(OWNER) $(GROUP) -m 444 libdevmapper-event.h \
+		$(includedir)/libdevmapper-event.h
+
+install_static: libdevmapper-event.a
+	$(INSTALL) -D $(OWNER) $(GROUP) -m 555 $(STRIP) $< \
+		$(libdir)/libdevmapper-event.a.$(LIB_VERSION)
+	$(LN_S) -f libdevmapper-event.a.$(LIB_VERSION) $(libdir)/libdevmapper-event.a
+

daemons/dmeventd/dmeventd.h

@@ -0,0 +1,13 @@
+#ifndef __DMEVENTD_DOT_H__
+#define __DMEVENTD_DOT_H__
+
+#define EXIT_LOCKFILE_INUSE      2
+#define EXIT_DESC_CLOSE_FAILURE  3
+#define EXIT_OPEN_PID_FAILURE    4
+#define EXIT_FIFO_FAILURE        5
+#define EXIT_CHDIR_FAILURE       6
+
+void dmeventd(void)
+    __attribute((noreturn));
+
+#endif /* __DMEVENTD_DOT_H__ */

daemons/dmeventd/libdevmapper-event.c

@@ -0,0 +1,510 @@
+ /*
+ * Copyright (C) 2005 Red Hat, Inc. All rights reserved.
+ *
+ * This file is part of the device-mapper userspace tools.
+ *
+ * This copyrighted material is made available to anyone wishing to use,
+ * modify, copy, or redistribute it subject to the terms and conditions
+ * of the GNU Lesser General Public License v.2.1.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#include "lib.h"
+#include "libdevmapper-event.h"
+//#include "libmultilog.h"
+#include "dmeventd.h"
+
+#include <errno.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/file.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <unistd.h>
+#include <signal.h>
+#include <sys/wait.h>
+
+/* Set by any of the external fxns the first time one of them is called */
+/* FIXME Unused */
+// static int _logging = 0;
+
+/* Fetch a string off src and duplicate it into *dest. */
+/* FIXME: move to seperate module to share with the daemon. */
+static const char delimiter = ' ';
+static char *fetch_string(char **src)
+{
+	char *p, *ret;
+
+	if ((p = strchr(*src, delimiter)))
+		*p = 0;
+
+	if ((ret = dm_strdup(*src)))
+		*src += strlen(ret) + 1;
+
+	if (p)
+		*p = delimiter;
+
+	return ret;
+}
+
+/* Parse a device message from the daemon. */
+static int parse_message(struct dm_event_daemon_message *msg, char **dso_name,
+			 char **device, enum dm_event_type *events)
+{
+	char *p = msg->msg;
+
+	if ((*dso_name = fetch_string(&p)) &&
+	    (*device   = fetch_string(&p))) {
+		*events = atoi(p);
+
+		return 0;
+	}
+
+	return -ENOMEM;
+}
+
+/*
+ * daemon_read
+ * @fifos
+ * @msg
+ *
+ * Read message from daemon.
+ *
+ * Returns: 0 on failure, 1 on success
+ */
+static int daemon_read(struct dm_event_fifos *fifos, struct dm_event_daemon_message *msg)
+{
+	unsigned bytes = 0;
+	int ret = 0;
+	fd_set fds;
+
+	memset(msg, 0, sizeof(*msg));
+	while (bytes < sizeof(*msg)) {
+		do {
+			/* Watch daemon read FIFO for input. */
+			FD_ZERO(&fds);
+			FD_SET(fifos->server, &fds);
+			ret = select(fifos->server+1, &fds, NULL, NULL, NULL);
+			if (ret < 0 && errno != EINTR) {
+				/* FIXME Log error */
+				return 0;
+			}
+		} while (ret < 1);
+
+		ret = read(fifos->server, msg, sizeof(*msg) - bytes);
+		if (ret < 0) {
+			if ((errno == EINTR) || (errno == EAGAIN))
+				continue;
+			else {
+				/* FIXME Log error */
+				return 0;
+			}
+		}
+
+		bytes += ret;
+	}
+
+	return bytes == sizeof(*msg);
+}
+
+/* Write message to daemon. */
+static int daemon_write(struct dm_event_fifos *fifos, struct dm_event_daemon_message *msg)
+{
+	unsigned bytes = 0;
+	int ret = 0;
+	fd_set fds;
+
+	while (bytes < sizeof(*msg)) {
+		do {
+			/* Watch daemon write FIFO to be ready for output. */
+			FD_ZERO(&fds);
+			FD_SET(fifos->client, &fds);
+			ret = select(fifos->client +1, NULL, &fds, NULL, NULL);
+			if ((ret < 0) && (errno != EINTR)) {
+				/* FIXME Log error */
+				return 0;
+			}
+		} while (ret < 1);
+
+		ret = write(fifos->client, msg, sizeof(*msg) - bytes);
+		if (ret < 0) {
+			if ((errno == EINTR) || (errno == EAGAIN))
+				continue;
+			else {
+				/* fixme: log error */
+				return 0;
+			}
+		}
+
+		bytes += ret;
+	}
+
+	return bytes == sizeof(*msg);
+}
+
+static int daemon_talk(struct dm_event_fifos *fifos, struct dm_event_daemon_message *msg,
+		       int cmd, char *dso_name, char *device,
+		       enum dm_event_type events, uint32_t timeout)
+{
+	memset(msg, 0, sizeof(*msg));
+
+	/*
+	 * Set command and pack the arguments
+	 * into ASCII message string.
+	 */
+	msg->opcode.cmd = cmd;
+
+	if (sizeof(msg->msg) <= (unsigned) snprintf(msg->msg, sizeof(msg->msg),
+						    "%s %s %u %"PRIu32,
+						    dso_name ? dso_name : "",
+						    device ? device : "",
+						    events, timeout)) {
+		stack;
+		return -ENAMETOOLONG;
+	}
+
+	/*
+	 * Write command and message to and
+	 * read status return code from daemon.
+	 */
+	if (!daemon_write(fifos, msg)) {
+		stack;
+		return -EIO;
+	}
+
+	if (!daemon_read(fifos, msg)) {
+		stack;
+		return -EIO;
+	}
+
+	return msg->opcode.status;
+}
+
+static volatile sig_atomic_t daemon_running = 0;
+
+static void daemon_running_signal_handler(int sig)
+{
+	daemon_running = 1;
+}
+
+/*
+ * start_daemon
+ *
+ * This function forks off a process (dmeventd) that will handle
+ * the events.  A signal must be returned from the child to
+ * indicate when it is ready to handle requests.  The parent
+ * (this function) returns 1 if there is a daemon running. 
+ *
+ * Returns: 1 on success, 0 otherwise
+ */
+static int start_daemon(void)
+{
+	int pid, ret=0;
+	void *old_hand;
+	sigset_t set, oset;
+
+	/* Must be able to acquire signal */
+	old_hand = signal(SIGUSR1, &daemon_running_signal_handler);
+	if (old_hand == SIG_ERR) {
+		log_error("Unable to setup signal handler.");
+		return 0;
+	}
+
+	if (sigemptyset(&set) || sigaddset(&set, SIGUSR1)) {
+		log_error("Unable to fill signal set.");
+	} else if (sigprocmask(SIG_UNBLOCK, &set, &oset)) {
+		log_error("Can't unblock the potentially blocked signal SIGUSR1");
+	}
+	
+	pid = fork();
+
+	if (pid < 0)
+		log_error("Unable to fork.\n");
+	else if (pid) { /* parent waits for child to get ready for requests */
+		int status;
+
+		/* FIXME Better way to do this? */
+		while (!waitpid(pid, &status, WNOHANG) && !daemon_running)
+			sleep(1);
+
+		if (daemon_running) {
+			ret = 1;
+		} else {
+			switch (WEXITSTATUS(status)) {
+			case EXIT_LOCKFILE_INUSE:
+				/*
+				 * Note, this is ok... we still have daemon
+				 * that we can communicate with...
+				 */
+				log_print("Starting dmeventd failed: "
+					  "dmeventd already running.\n");
+				ret = 1;
+				break;
+			default:
+				log_error("Unable to start dmeventd.\n");
+				break;
+			}
+		}
+		/*
+		 * Sometimes, a single process may perform multiple calls
+		 * that result in a daemon starting and exiting.  If we
+		 * don't reset this, the second (or greater) time the daemon
+		 * is started will cause this logic not to work.
+		 */
+		daemon_running = 0;
+	} else {
+		signal(SIGUSR1, SIG_IGN); /* don't care about error */
+
+		/* dmeventd function is responsible for properly setting **
+		** itself up.  It must never return - only exit.  This is**
+		** why it is followed by an EXIT_FAILURE                 */
+		dmeventd();
+		exit(EXIT_FAILURE);
+	}
+
+	/* FIXME What if old_hand is SIG_ERR? */
+	if (signal(SIGUSR1, old_hand) == SIG_ERR)
+		log_error("Unable to reset signal handler.");
+
+	if (sigprocmask(SIG_SETMASK, &oset, NULL))
+		log_error("Unable to reset signal mask.");
+
+	return ret;
+}
+
+/* Initialize client. */
+static int init_client(struct dm_event_fifos *fifos)
+{
+	/* FIXME Is fifo the most suitable method? */
+	/* FIXME Why not share comms/daemon code with something else e.g. multipath? */
+
+	/* init fifos */
+	memset(fifos, 0, sizeof(*fifos));
+	fifos->client_path = DM_EVENT_FIFO_CLIENT;
+	fifos->server_path = DM_EVENT_FIFO_SERVER;
+
+	/* FIXME The server should be responsible for these, not the client. */
+	/* Create fifos */
+	if (((mkfifo(fifos->client_path, 0600) == -1) && errno != EEXIST) ||
+	    ((mkfifo(fifos->server_path, 0600) == -1) && errno != EEXIST)) {
+		log_error("%s: Failed to create a fifo.\n", __func__);
+		return 0;
+	}
+
+	/* FIXME Warn/abort if perms are wrong - not something to fix silently. */
+	/* If they were already there, make sure permissions are ok. */
+	if (chmod(fifos->client_path, 0600)) {
+		log_error("Unable to set correct file permissions on %s",
+			fifos->client_path);
+		return 0;
+	}
+
+	if (chmod(fifos->server_path, 0600)) {
+		log_error("Unable to set correct file permissions on %s",
+			fifos->server_path);
+		return 0;
+	}
+
+	/*
+	 * Open the fifo used to read from the daemon.
+	 * Allows daemon to create its write fifo...
+	 */
+	if ((fifos->server = open(fifos->server_path, O_RDWR)) < 0) {
+		log_error("%s: open server fifo %s\n",
+			__func__, fifos->server_path);
+		stack;
+		return 0;
+	}
+
+	/* Lock out anyone else trying to do communication with the daemon. */
+	/* FIXME Why failure not retry?  How do multiple processes communicate? */
+	if (flock(fifos->server, LOCK_EX) < 0){
+		log_error("%s: flock %s\n", __func__, fifos->server_path);
+		close(fifos->server);
+		return 0;
+	}
+
+	/* Anyone listening?  If not, errno will be ENXIO */
+	while ((fifos->client = open(fifos->client_path,
+				  O_WRONLY | O_NONBLOCK)) < 0) {
+		if (errno != ENXIO) {
+			log_error("%s: Can't open client fifo %s: %s\n",
+				  __func__, fifos->client_path, strerror(errno));
+			close(fifos->server);
+			stack;
+			return 0;
+		}
+		
+		/* FIXME Unnecessary if daemon was started before calling this */
+		if (!start_daemon()) {
+			stack;
+			return 0;
+		}
+	}
+	
+	return 1;
+}
+
+static void dtr_client(struct dm_event_fifos *fifos)
+{
+	if (flock(fifos->server, LOCK_UN))
+		log_error("flock unlock %s\n", fifos->server_path);
+
+	close(fifos->client);
+	close(fifos->server);
+}
+
+/* Check, if a block device exists. */
+static int device_exists(char *device)
+{
+	struct stat st_buf;
+	char path2[PATH_MAX];
+
+	if (!device)
+		return 0;
+
+	if (device[0] == '/') /* absolute path */
+		return !stat(device, &st_buf) && S_ISBLK(st_buf.st_mode);
+
+	if (PATH_MAX <= snprintf(path2, PATH_MAX, "%s/%s", dm_dir(), device))
+		return 0;
+
+	return !stat(path2, &st_buf) && S_ISBLK(st_buf.st_mode);
+}
+
+/* Handle the event (de)registration call and return negative error codes. */
+static int do_event(int cmd, struct dm_event_daemon_message *msg,
+		    char *dso_name, char *device, enum dm_event_type events,
+		    uint32_t timeout)
+{
+	int ret;
+	struct dm_event_fifos fifos;
+
+	/* FIXME Start the daemon here if it's not running e.g. exclusive lock file */
+	/* FIXME Move this to separate 'dm_event_register_handler' - if no daemon here, fail */
+	if (!init_client(&fifos)) {
+		stack;
+		return -ESRCH;
+	}
+
+	/* FIXME Use separate 'dm_event_register_handler' function to pass in dso? */
+	ret = daemon_talk(&fifos, msg, cmd, dso_name, device, events, timeout);
+
+	/* what is the opposite of init? */
+	dtr_client(&fifos);
+	
+	return ret;
+}
+
+/* FIXME remove dso_name - use handle instead */
+/* FIXME Use uuid not path! */
+/* External library interface. */
+int dm_event_register(char *dso_name, char *device_path,
+		      enum dm_event_type events)
+{
+	int ret;
+	struct dm_event_daemon_message msg;
+
+	if (!device_exists(device_path)) {
+		log_error("%s: device not found", device_path);
+		return 0;
+	}
+
+	if ((ret = do_event(DM_EVENT_CMD_REGISTER_FOR_EVENT, &msg,
+			    dso_name, device_path, events, 0)) < 0) {
+		log_error("%s: event registration failed: %s", device_path,
+			  strerror(-ret));
+		return 0;
+	}
+
+	return 1;
+}
+
+int dm_event_unregister(char *dso_name, char *device_path,
+			enum dm_event_type events)
+{
+	int ret;
+	struct dm_event_daemon_message msg;
+
+	if (!device_exists(device_path)) {
+		log_error("%s: device not found", device_path);
+		return 0;
+	}
+
+	if ((ret = do_event(DM_EVENT_CMD_UNREGISTER_FOR_EVENT, &msg,
+			    dso_name, device_path, events, 0)) < 0) {
+		log_error("%s: event deregistration failed: %s", device_path,
+			  strerror(-ret));
+		return 0;
+	}
+
+	return 1;
+}
+
+int dm_event_get_registered_device(char **dso_name, char **device_path,
+			     enum dm_event_type *events, int next)
+{
+	int ret;
+	char *dso_name_arg = NULL, *device_path_arg = NULL;
+	struct dm_event_daemon_message msg;
+
+	if (!(ret = do_event(next ? DM_EVENT_CMD_GET_NEXT_REGISTERED_DEVICE :
+				    DM_EVENT_CMD_GET_REGISTERED_DEVICE,
+			     &msg, *dso_name, *device_path, *events, 0)))
+		ret = parse_message(&msg, &dso_name_arg, &device_path_arg,
+				    events);
+
+	if (next){
+		if (*dso_name)
+			dm_free(*dso_name);
+		if (*device_path)
+			dm_free(*device_path);
+		*dso_name = dso_name_arg;
+		*device_path = device_path_arg;
+	} else {
+		if (!(*dso_name))
+			*dso_name = dso_name_arg;
+		if (!(*device_path))
+			*device_path = device_path_arg;
+	}
+
+	return ret;
+}
+
+int dm_event_set_timeout(char *device_path, uint32_t timeout)
+{
+	struct dm_event_daemon_message msg;
+
+	if (!device_exists(device_path))
+		return -ENODEV;
+	return do_event(DM_EVENT_CMD_SET_TIMEOUT, &msg,
+			NULL, device_path, 0, timeout);
+}
+
+int dm_event_get_timeout(char *device_path, uint32_t *timeout)
+{
+	int ret;
+	struct dm_event_daemon_message msg;
+
+	if (!device_exists(device_path))
+		return -ENODEV;
+	if (!(ret = do_event(DM_EVENT_CMD_GET_TIMEOUT, &msg, NULL, device_path, 0, 0)))
+		*timeout = atoi(msg.msg);
+	return ret;
+}
+/*
+ * Overrides for Emacs so that we follow Linus's tabbing style.
+ * Emacs will notice this stuff at the end of the file and automatically
+ * adjust the settings for this buffer only.  This must remain at the end
+ * of the file.
+ * ---------------------------------------------------------------------------
+ * Local variables:
+ * c-file-style: "linux"
+ * End:
+ */

daemons/dmeventd/libdevmapper-event.h

@@ -0,0 +1,108 @@
+/*
+ * Copyright (C) 2005 Red Hat, Inc. All rights reserved.
+ *
+ * This file is part of the device-mapper userspace tools.
+ *
+ * This copyrighted material is made available to anyone wishing to use,
+ * modify, copy, or redistribute it subject to the terms and conditions
+ * of the GNU Lesser General Public License v.2.1.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+/*
+ * Note that this file is released only as part of a technology preview
+ * and its contents may change in future updates in ways that do not
+ * preserve compatibility.
+ */
+
+#ifndef LIB_DMEVENT_H
+#define LIB_DMEVENT_H
+
+#include <stdint.h>
+
+/* FIXME This stuff must be configurable. */
+
+#define	DM_EVENT_DAEMON		"/sbin/dmeventd"
+#define DM_EVENT_LOCKFILE	"/var/lock/dmeventd"
+#define	DM_EVENT_FIFO_CLIENT	"/var/run/dmeventd-client"
+#define	DM_EVENT_FIFO_SERVER	"/var/run/dmeventd-server"
+#define DM_EVENT_PIDFILE	"/var/run/dmeventd.pid"
+
+#define DM_EVENT_DEFAULT_TIMEOUT 10
+
+/* Commands for the daemon passed in the message below. */
+enum dm_event_command {
+	DM_EVENT_CMD_ACTIVE = 1,
+	DM_EVENT_CMD_REGISTER_FOR_EVENT,
+	DM_EVENT_CMD_UNREGISTER_FOR_EVENT,
+	DM_EVENT_CMD_GET_REGISTERED_DEVICE,
+	DM_EVENT_CMD_GET_NEXT_REGISTERED_DEVICE,
+	DM_EVENT_CMD_SET_TIMEOUT,
+	DM_EVENT_CMD_GET_TIMEOUT,
+};
+
+/* Message passed between client and daemon. */
+struct dm_event_daemon_message {
+	union {
+		unsigned int cmd;	/* FIXME Use fixed size. */
+		int	 status;	/* FIXME Use fixed size. */
+	} opcode;
+	char msg[252];		/* FIXME Why is this 252 ? */
+} __attribute__((packed));	/* FIXME Do this properly! */
+
+/* FIXME Is this meant to be exported?  I can't see where the interface uses it. */
+/* Fifos for client/daemon communication. */
+struct dm_event_fifos {
+	int client;
+	int server;
+	const char *client_path;
+	const char *server_path;
+};
+
+/* Event type definitions. */
+/* FIXME Use masks to separate the types and provide for extension. */
+enum dm_event_type {
+	DM_EVENT_SINGLE		= 0x01, /* Report multiple errors just once. */
+	DM_EVENT_MULTI		= 0x02, /* Report all of them. */
+
+	DM_EVENT_SECTOR_ERROR	= 0x04, /* Failure on a particular sector. */
+	DM_EVENT_DEVICE_ERROR	= 0x08, /* Device failure. */
+	DM_EVENT_PATH_ERROR	= 0x10, /* Failure on an io path. */
+	DM_EVENT_ADAPTOR_ERROR	= 0x20, /* Failure off a host adaptor. */
+
+	DM_EVENT_SYNC_STATUS	= 0x40, /* Mirror synchronization completed/failed. */
+	DM_EVENT_TIMEOUT	= 0x80, /* Timeout has occured */
+};
+
+/* FIXME Use a mask. */
+#define	DM_EVENT_ALL_ERRORS (DM_EVENT_SECTOR_ERROR | DM_EVENT_DEVICE_ERROR | \
+			     DM_EVENT_PATH_ERROR | DM_EVENT_ADAPTOR_ERROR)
+
+/* Prototypes for event lib interface. */
+
+/* FIXME Replace device with standard name/uuid/devno choice */
+/* Interface changes: 
+   First register a handler, passing in a unique ref for the device. */
+//  int dm_event_register_handler(const char *dso_name, const char *device);
+//  int dm_event_register(const char *dso_name, const char *name, const char *uuid, uint32_t major, uint32_t minor, enum dm_event_type events);
+/* Or (better?) add to task structure and use existing functions - run a task to register/unregister events - we may need to run task withe that with the new event mechanism anyway, then the dso calls just hook in.
+*/
+ 
+/* FIXME Missing consts? */
+int dm_event_register(char *dso_name, char *device, enum dm_event_type events);
+int dm_event_unregister(char *dso_name, char *device,
+			enum dm_event_type events);
+int dm_event_get_registered_device(char **dso_name, char **device,
+				   enum dm_event_type *events, int next);
+int dm_event_set_timeout(char *device, uint32_t timeout);
+int dm_event_get_timeout(char *device, uint32_t *timeout);
+
+/* Prototypes for DSO interface. */
+void process_event(const char *device, enum dm_event_type event);
+int register_device(const char *device);
+int unregister_device(const char *device);
+
+#endif

daemons/dmeventd/plugins/Makefile.in

@@ -0,0 +1,22 @@
+#
+# Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.
+# Copyright (C) 2004-2005 Red Hat, Inc. All rights reserved.
+#
+# This file is part of the LVM2.
+#
+# This copyrighted material is made available to anyone wishing to use,
+# modify, copy, or redistribute it subject to the terms and conditions
+# of the GNU General Public License v.2.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software Foundation,
+# Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+
+srcdir = @srcdir@
+top_srcdir = @top_srcdir@
+VPATH = @srcdir@
+
+SUBDIRS += mirror
+
+include $(top_srcdir)/make.tmpl
+

daemons/dmeventd/plugins/mirror/.exported_symbols

@@ -0,0 +1,3 @@
+process_event
+register_device
+unregister_device

daemons/dmeventd/plugins/mirror/Makefile.in

@@ -0,0 +1,36 @@
+#
+# Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.
+# Copyright (C) 2004-2005 Red Hat, Inc. All rights reserved.
+#
+# This file is part of the LVM2.
+#
+# This copyrighted material is made available to anyone wishing to use,
+# modify, copy, or redistribute it subject to the terms and conditions
+# of the GNU General Public License v.2.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software Foundation,
+# Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+
+srcdir = @srcdir@
+top_srcdir = @top_srcdir@
+VPATH = @srcdir@
+
+INCLUDES += -I${top_srcdir}/tools
+CLDFLAGS += -L${top_srcdir}/tools -ldevmapper -llvm2cmd
+
+SOURCES = dmeventd_mirror.c
+
+ifeq ("@LIB_SUFFIX@","dylib")
+  LIB_SHARED = libdevmapper-event-lvm2mirror.dylib
+else
+  LIB_SHARED = libdevmapper-event-lvm2mirror.so
+endif
+
+include $(top_srcdir)/make.tmpl
+
+install: libdevmapper-event-lvm2mirror.$(LIB_SUFFIX)
+	$(INSTALL) -D $(OWNER) $(GROUP) -m 555 $(STRIP) $< \
+		$(libdir)/$<.$(LIB_VERSION)
+	$(LN_S) -f $<.$(LIB_VERSION) $(libdir)/$<
+

daemons/dmeventd/plugins/mirror/dmeventd_mirror.c

@@ -0,0 +1,246 @@
+/*
+ * Copyright (C) 2005 Red Hat, Inc. All rights reserved.
+ *
+ * This file is part of LVM2.
+ *
+ * This copyrighted material is made available to anyone wishing to use,
+ * modify, copy, or redistribute it subject to the terms and conditions
+ * of the GNU Lesser General Public License v.2.1.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#include "libdevmapper.h"
+#include "libdevmapper-event.h"
+#include "lvm2cmd.h"
+#include "lvm-string.h"
+
+#include <errno.h>
+#include <signal.h>
+#include <string.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <pthread.h>
+#include <unistd.h>
+
+#include <syslog.h> /* FIXME Replace syslog with multilog */
+
+#define ME_IGNORE    0
+#define ME_INSYNC    1
+#define ME_FAILURE   2
+
+/* FIXME: We may need to lock around operations to these */
+static int register_count = 0;
+static struct dm_pool *mem_pool = NULL;
+
+static int _get_mirror_event(char *params)
+{
+	int i, rtn = ME_INSYNC;
+	int max_args = 30;  /* should support at least 8-way mirrors */
+	char *args[max_args];
+	char *dev_status_str;
+	char *log_status_str;
+	char *sync_str;
+	char *p;
+	int log_argc, num_devs, num_failures=0;
+
+	if (max_args <= split_words(params, max_args, args)) {
+		syslog(LOG_ERR, "Unable to split mirror parameters: Arg list too long");
+		return -E2BIG;
+	}
+
+	/*
+	 * Unused:  0 409600 mirror
+	 * Used  :  2 253:4 253:5 400/400 1 AA 3 cluster 253:3 A
+	*/
+	num_devs = atoi(args[0]);
+	dev_status_str = args[3 + num_devs];
+	log_argc = atoi(args[4 + num_devs]);
+	log_status_str = args[4 + num_devs + log_argc];
+	sync_str = args[1 + num_devs];
+
+	/* Check for bad mirror devices */
+	for (i = 0; i < num_devs; i++) {
+		if (dev_status_str[i] == 'D') {
+			syslog(LOG_ERR, "Mirror device, %s, has failed.\n", args[i+1]);
+			num_failures++;
+		}
+	}
+
+	/* Check for bad log device */
+	if (log_status_str[0] == 'D') {
+		syslog(LOG_ERR, "Log device, %s, has failed.\n",
+		       args[3 + num_devs + log_argc]);
+		num_failures++;
+	}
+
+	if (num_failures) {
+		rtn = ME_FAILURE;
+		goto out;
+	}
+
+	p = strstr(sync_str, "/");
+	if (p) {
+		p[0] = '\0';
+		if (strcmp(sync_str, p+1))
+			rtn = ME_IGNORE;
+		p[0] = '/';
+	} else {
+		/*
+		 * How the hell did we get this?
+		 * Might mean all our parameters are screwed.
+		 */
+		syslog(LOG_ERR, "Unable to parse sync string.");
+		rtn = ME_IGNORE;
+	}
+ out:
+	return rtn;
+}
+
+static void _temporary_log_fn(int level, const char *file, int line, const char *format)
+{
+	return;
+	syslog(LOG_DEBUG, "%s", format);
+}
+
+static int _remove_failed_devices(const char *device)
+{
+	int r;
+	void *handle;
+	int cmd_size = 256;	/* FIXME Use system restriction */
+	char cmd_str[cmd_size];
+	char *vg = NULL, *lv = NULL, *layer = NULL;
+
+	if (strlen(device) > 200)
+		return -ENAMETOOLONG;
+
+	if (!split_dm_name(mem_pool, device, &vg, &lv, &layer)) {
+		syslog(LOG_ERR, "Unable to determine VG name from %s",
+		       device);
+		return -ENOMEM;
+	}
+
+	/* FIXME Is any sanity-checking required on %s? */
+	if (cmd_size <= snprintf(cmd_str, cmd_size, "vgreduce --removemissing %s", vg)) {
+		/* this error should be caught above, but doesn't hurt to check again */
+		syslog(LOG_ERR, "Unable to form LVM command: Device name too long");
+		dm_pool_empty(mem_pool);  /* FIXME: not safe with multiple threads */
+		return -ENAMETOOLONG;
+	}
+
+	lvm2_log_fn(_temporary_log_fn);
+	handle = lvm2_init();
+	lvm2_log_level(handle, 1);
+	r = lvm2_run(handle, cmd_str);
+
+	dm_pool_empty(mem_pool);  /* FIXME: not safe with multiple threads */
+	return (r == 1)? 0: -1;
+}
+
+void process_event(const char *device, enum dm_event_type event)
+{
+	struct dm_task *dmt;
+	void *next = NULL;
+	uint64_t start, length;
+	char *target_type = NULL;
+	char *params;
+
+	/* FIXME Move inside libdevmapper */
+	if (!(dmt = dm_task_create(DM_DEVICE_STATUS))) {
+		syslog(LOG_ERR, "Unable to create dm_task.\n");
+		goto fail;
+	}
+
+	if (!dm_task_set_name(dmt, device)) {
+		syslog(LOG_ERR, "Unable to set device name.\n");
+		goto fail;
+	}
+
+	if (!dm_task_run(dmt)) {
+		syslog(LOG_ERR, "Unable to run task.\n");
+		goto fail;
+	}
+
+	do {
+		next = dm_get_next_target(dmt, next, &start, &length,
+					  &target_type, &params);
+
+		if (strcmp(target_type, "mirror")) {
+			syslog(LOG_INFO, "%s has unmirrored portion.\n", device);
+			continue;
+		}
+
+		switch(_get_mirror_event(params)) {
+		case ME_INSYNC:
+			/* FIXME: all we really know is that this
+			   _part_ of the device is in sync
+			   Also, this is not an error
+			*/
+			syslog(LOG_NOTICE, "%s is now in-sync\n", device);
+			break;
+		case ME_FAILURE:
+			syslog(LOG_ERR, "Device failure in %s\n", device);
+			if (_remove_failed_devices(device))
+				syslog(LOG_ERR, "Failed to remove faulty devices in %s\n",
+				       device);
+			/* Should check before warning user that device is now linear
+			else
+				syslog(LOG_NOTICE, "%s is now a linear device.\n",
+					device);
+			*/
+			break;
+		case ME_IGNORE:
+			break;
+		default:
+			syslog(LOG_INFO, "Unknown event received.\n");
+		}
+	} while (next);
+
+ fail:
+	if (dmt)
+		dm_task_destroy(dmt);
+}
+
+int register_device(const char *device)
+{
+	syslog(LOG_INFO, "Monitoring %s for events\n", device);
+
+	/*
+	 * Need some space for allocations.  1024 should be more
+	 * than enough for what we need (device mapper name splitting)
+	 */
+	if (!mem_pool)
+		mem_pool = dm_pool_create("mirror_dso", 1024);
+
+	if (!mem_pool)
+		return 0;
+
+	register_count++;
+
+        return 1;
+}
+
+int unregister_device(const char *device)
+{
+        syslog(LOG_INFO, "Stopped monitoring %s for events\n", device);
+
+	if (!(--register_count)) {
+		dm_pool_destroy(mem_pool);
+		mem_pool = NULL;
+	}
+
+        return 1;
+}
+
+/*
+ * Overrides for Emacs so that we follow Linus's tabbing style.
+ * Emacs will notice this stuff at the end of the file and automatically
+ * adjust the settings for this buffer only.  This must remain at the end
+ * of the file.
+ * ---------------------------------------------------------------------------
+ * Local variables:
+ * c-file-style: "linux"
+ * End:
+ */

debian/README.Debian

@@ -0,0 +1,6 @@
+LVM2 requires the device-mapper kernel module (dm-mod).  This is
+available as a kernel patch for 2.4 (in kernel-patch-device-mapper), and
+is distributed with linux 2.5 and above.  The LVM1 kernel module (lvm-mod)
+will not work with lvm2 packages.  dm-mod and lvm-mod may both be loaded
+in the kernel at the same time with no problems.  Without dm-mod, this
+package is pretty useless.

debian/changelog

@@ -1,3 +1,41 @@
+lvm2 (1.95.15-1) unstable; urgency=low
+  
+  * New upstream release.
+  * Remove undocumented manpage symlinks.
+  * Update description to be more informative.  (Closes: #173499)
+  * Add kernel-patch-device-mapper suggestion.
+  * Update standards version.
+
+ -- Andres Salomon <dilinger@mp3revolution.net>  Sun, 16 Feb 2002 04:21:26 -0400
+
+lvm2 (1.95.11-1) unstable; urgency=low
+
+  * New upstream release.  (Closes: #171436)
+  * Removed TODO and INTRO from debian/docs; added WHATS_NEW.
+  * Remove vgcfgrestore.8 undocumented symlink.
+  * Added a README.Debian, mentioning the device-mapper kernel module
+    requirement that lvm2 has.  (Closes: #171674, #163020)
+  * Get rid of debian/conffiles (debhelper's smart enough to figure that out).
+  * debian/copyright fix to appease lintian.
+  * Fix typo in tools/commands.h that caused /usr/sbin/; to be created.
+
+ -- Andres Salomon <dilinger@mp3revolution.net>  Mon,  9 Dec 2002 02:51:02 -0400
+
+lvm2 (1.95.10-2) unstable; urgency=low
+
+  * Fix software raid problems by ensuring lvm init script runs after
+    raidtools init script.  (Closes: #152569)
+
+ -- Andres Salomon <dilinger@mp3revolution.net>  Tue,  3 Sep 2002 04:05:43 -0400
+
+lvm2 (1.95.10-1) unstable; urgency=low
+
+  * New upstream release (Beta 3.2).
+  * Change all references to /dev/device-mapper/control to
+    /dev/mapper/control.
+
+ -- Andres Salomon <dilinger@mp3revolution.net>  Sun,  1 Sep 2002 18:55:12 -0400
+
 lvm2 (0.95.05-3) unstable; urgency=low
 
   * Get rid of awk dependency in init script.  (Closes: #146257)

debian/conffiles

@@ -1,2 +0,0 @@
-/etc/lvm/lvm.conf
-/etc/init.d/lvm2

debian/control

@@ -2,8 +2,8 @@ Source: lvm2
 Section: admin
 Priority: optional
 Maintainer: Andres Salomon <dilinger@mp3revolution.net>
-Build-Depends: debhelper (>> 3.0.0), libdevmapper-dev, libreadline4-dev
-Standards-Version: 3.5.2
+Build-Depends: debhelper (>> 3.0.0), libdevmapper-dev (>= 0.96.04), libreadline4-dev
+Standards-Version: 3.5.8.0
 
 Package: lvm2
 Architecture: any
@@ -11,10 +11,14 @@ Depends: ${shlibs:Depends}
 Conflicts: lvm10, lvm-common
 Replaces: lvm10, lvm-common
 Provides: lvm-binaries
-Suggests: dmsetup
+Suggests: dmsetup, kernel-patch-device-mapper
 Description: The Linux Logical Volume Manager
  This is LVM2, the rewrite of The Linux Logical Volume Manager.  LVM
  supports enterprise level volume management of disk and disk subsystems
  by grouping arbitrary disks into volume groups. The total capacity of
  volume groups can be allocated to logical volumes, which are accessed as
  regular block devices.
+ .
+ LVM2 is currently stable, but has some unimplemented features (most notably,
+ pvmove and e2fsadm).  It is not yet recommended for production use.  It is
+ backwards-compatible with LVM1 (lvm10), and requires Linux kernel 2.4.

debian/copyright

@@ -3,7 +3,7 @@ Wed, 20 Feb 2002 03:17:25 -0500.
 
 It was downloaded from http://www.sistina.com/products_lvm.htm
 
-Upstream Author(s): LVM Development Team
+Upstream Author: LVM Development Team
 
 Copyright (c) 2001-2002 LVM Development Team
 

debian/docs

@@ -1,6 +1,5 @@
 BUGS
-INTRO
 README
-TODO
 VERSION
+WHATS_NEW
 doc/*

debian/init.d

@@ -14,7 +14,7 @@ modprobe dm-mod >/dev/null 2>&1
 
 # Create necessary files in /dev for device-mapper
 create_devfiles() {
-	DIR="/dev/device-mapper"
+	DIR="/dev/mapper"
 	FILE="$DIR/control"
 	major=$(grep "[0-9] misc$" /proc/devices | sed 's/[ ]\+misc//')
 	minor=$(grep "[0-9] device-mapper$" /proc/misc | sed 's/[ ]\+device-mapper//')

debian/rules

@@ -98,11 +98,10 @@ binary-arch: build install
 #	dh_installemacsen -a
 #	dh_installpam -a
 #	dh_installmime -a
-	dh_installinit --update-rcd-params="start 25 S . start 50 0 6 ."
+	dh_installinit --update-rcd-params="start 26 S . start 50 0 6 ."
 	dh_installcron
 	dh_installman
 	dh_installinfo 
-	dh_undocumented
 	dh_installchangelogs
 	dh_strip
 	dh_link

debian/undocumented

@@ -1,14 +0,0 @@
-e2fsadm.8
-lvmdiskscan.8
-lvmsadc.8
-lvmsar.8
-lvresize.8
-pvdata.8
-pvmove.8
-pvresize.8
-version.8
-vgcfgrestore.8
-vgexport.8
-vgimport.8
-vgmknodes.8
-vgsplit.8

dmeventd/Makefile.in

@@ -0,0 +1,22 @@
+#
+# Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.
+# Copyright (C) 2004-2005 Red Hat, Inc. All rights reserved.
+#
+# This file is part of the LVM2.
+#
+# This copyrighted material is made available to anyone wishing to use,
+# modify, copy, or redistribute it subject to the terms and conditions
+# of the GNU General Public License v.2.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software Foundation,
+# Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+
+srcdir = @srcdir@
+top_srcdir = @top_srcdir@
+VPATH = @srcdir@
+
+SUBDIRS += mirror
+
+include $(top_srcdir)/make.tmpl
+

dmeventd/mirror/.exported_symbols

@@ -0,0 +1,3 @@
+process_event
+register_device
+unregister_device

dmeventd/mirror/Makefile.in

@@ -0,0 +1,36 @@
+#
+# Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.
+# Copyright (C) 2004-2005 Red Hat, Inc. All rights reserved.
+#
+# This file is part of the LVM2.
+#
+# This copyrighted material is made available to anyone wishing to use,
+# modify, copy, or redistribute it subject to the terms and conditions
+# of the GNU General Public License v.2.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software Foundation,
+# Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+
+srcdir = @srcdir@
+top_srcdir = @top_srcdir@
+VPATH = @srcdir@
+
+INCLUDES += -I${top_srcdir}/tools
+CLDFLAGS += -L${top_srcdir}/tools -ldevmapper -llvm2cmd
+
+SOURCES = dmeventd_mirror.c
+
+ifeq ("@LIB_SUFFIX@","dylib")
+  LIB_SHARED = libdevmapper-event-lvm2mirror.dylib
+else
+  LIB_SHARED = libdevmapper-event-lvm2mirror.so
+endif
+
+include $(top_srcdir)/make.tmpl
+
+install: libdevmapper-event-lvm2mirror.$(LIB_SUFFIX)
+	$(INSTALL) -D $(OWNER) $(GROUP) -m 555 $(STRIP) $< \
+		$(libdir)/$<.$(LIB_VERSION)
+	$(LN_S) -f $<.$(LIB_VERSION) $(libdir)/$<
+

dmeventd/mirror/dmeventd_mirror.c

@@ -0,0 +1,246 @@
+/*
+ * Copyright (C) 2005 Red Hat, Inc. All rights reserved.
+ *
+ * This file is part of LVM2.
+ *
+ * This copyrighted material is made available to anyone wishing to use,
+ * modify, copy, or redistribute it subject to the terms and conditions
+ * of the GNU Lesser General Public License v.2.1.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#include "libdevmapper.h"
+#include "libdevmapper-event.h"
+#include "lvm2cmd.h"
+#include "lvm-string.h"
+
+#include <errno.h>
+#include <signal.h>
+#include <string.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <pthread.h>
+#include <unistd.h>
+
+#include <syslog.h> /* FIXME Replace syslog with multilog */
+
+#define ME_IGNORE    0
+#define ME_INSYNC    1
+#define ME_FAILURE   2
+
+/* FIXME: We may need to lock around operations to these */
+static int register_count = 0;
+static struct dm_pool *mem_pool = NULL;
+
+static int _get_mirror_event(char *params)
+{
+	int i, rtn = ME_INSYNC;
+	int max_args = 30;  /* should support at least 8-way mirrors */
+	char *args[max_args];
+	char *dev_status_str;
+	char *log_status_str;
+	char *sync_str;
+	char *p;
+	int log_argc, num_devs, num_failures=0;
+
+	if (max_args <= split_words(params, max_args, args)) {
+		syslog(LOG_ERR, "Unable to split mirror parameters: Arg list too long");
+		return -E2BIG;
+	}
+
+	/*
+	 * Unused:  0 409600 mirror
+	 * Used  :  2 253:4 253:5 400/400 1 AA 3 cluster 253:3 A
+	*/
+	num_devs = atoi(args[0]);
+	dev_status_str = args[3 + num_devs];
+	log_argc = atoi(args[4 + num_devs]);
+	log_status_str = args[4 + num_devs + log_argc];
+	sync_str = args[1 + num_devs];
+
+	/* Check for bad mirror devices */
+	for (i = 0; i < num_devs; i++) {
+		if (dev_status_str[i] == 'D') {
+			syslog(LOG_ERR, "Mirror device, %s, has failed.\n", args[i+1]);
+			num_failures++;
+		}
+	}
+
+	/* Check for bad log device */
+	if (log_status_str[0] == 'D') {
+		syslog(LOG_ERR, "Log device, %s, has failed.\n",
+		       args[3 + num_devs + log_argc]);
+		num_failures++;
+	}
+
+	if (num_failures) {
+		rtn = ME_FAILURE;
+		goto out;
+	}
+
+	p = strstr(sync_str, "/");
+	if (p) {
+		p[0] = '\0';
+		if (strcmp(sync_str, p+1))
+			rtn = ME_IGNORE;
+		p[0] = '/';
+	} else {
+		/*
+		 * How the hell did we get this?
+		 * Might mean all our parameters are screwed.
+		 */
+		syslog(LOG_ERR, "Unable to parse sync string.");
+		rtn = ME_IGNORE;
+	}
+ out:
+	return rtn;
+}
+
+static void _temporary_log_fn(int level, const char *file, int line, const char *format)
+{
+	return;
+	syslog(LOG_DEBUG, "%s", format);
+}
+
+static int _remove_failed_devices(const char *device)
+{
+	int r;
+	void *handle;
+	int cmd_size = 256;	/* FIXME Use system restriction */
+	char cmd_str[cmd_size];
+	char *vg = NULL, *lv = NULL, *layer = NULL;
+
+	if (strlen(device) > 200)
+		return -ENAMETOOLONG;
+
+	if (!split_dm_name(mem_pool, device, &vg, &lv, &layer)) {
+		syslog(LOG_ERR, "Unable to determine VG name from %s",
+		       device);
+		return -ENOMEM;
+	}
+
+	/* FIXME Is any sanity-checking required on %s? */
+	if (cmd_size <= snprintf(cmd_str, cmd_size, "vgreduce --removemissing %s", vg)) {
+		/* this error should be caught above, but doesn't hurt to check again */
+		syslog(LOG_ERR, "Unable to form LVM command: Device name too long");
+		dm_pool_empty(mem_pool);  /* FIXME: not safe with multiple threads */
+		return -ENAMETOOLONG;
+	}
+
+	lvm2_log_fn(_temporary_log_fn);
+	handle = lvm2_init();
+	lvm2_log_level(handle, 1);
+	r = lvm2_run(handle, cmd_str);
+
+	dm_pool_empty(mem_pool);  /* FIXME: not safe with multiple threads */
+	return (r == 1)? 0: -1;
+}
+
+void process_event(const char *device, enum dm_event_type event)
+{
+	struct dm_task *dmt;
+	void *next = NULL;
+	uint64_t start, length;
+	char *target_type = NULL;
+	char *params;
+
+	/* FIXME Move inside libdevmapper */
+	if (!(dmt = dm_task_create(DM_DEVICE_STATUS))) {
+		syslog(LOG_ERR, "Unable to create dm_task.\n");
+		goto fail;
+	}
+
+	if (!dm_task_set_name(dmt, device)) {
+		syslog(LOG_ERR, "Unable to set device name.\n");
+		goto fail;
+	}
+
+	if (!dm_task_run(dmt)) {
+		syslog(LOG_ERR, "Unable to run task.\n");
+		goto fail;
+	}
+
+	do {
+		next = dm_get_next_target(dmt, next, &start, &length,
+					  &target_type, &params);
+
+		if (strcmp(target_type, "mirror")) {
+			syslog(LOG_INFO, "%s has unmirrored portion.\n", device);
+			continue;
+		}
+
+		switch(_get_mirror_event(params)) {
+		case ME_INSYNC:
+			/* FIXME: all we really know is that this
+			   _part_ of the device is in sync
+			   Also, this is not an error
+			*/
+			syslog(LOG_NOTICE, "%s is now in-sync\n", device);
+			break;
+		case ME_FAILURE:
+			syslog(LOG_ERR, "Device failure in %s\n", device);
+			if (_remove_failed_devices(device))
+				syslog(LOG_ERR, "Failed to remove faulty devices in %s\n",
+				       device);
+			/* Should check before warning user that device is now linear
+			else
+				syslog(LOG_NOTICE, "%s is now a linear device.\n",
+					device);
+			*/
+			break;
+		case ME_IGNORE:
+			break;
+		default:
+			syslog(LOG_INFO, "Unknown event received.\n");
+		}
+	} while (next);
+
+ fail:
+	if (dmt)
+		dm_task_destroy(dmt);
+}
+
+int register_device(const char *device)
+{
+	syslog(LOG_INFO, "Monitoring %s for events\n", device);
+
+	/*
+	 * Need some space for allocations.  1024 should be more
+	 * than enough for what we need (device mapper name splitting)
+	 */
+	if (!mem_pool)
+		mem_pool = dm_pool_create("mirror_dso", 1024);
+
+	if (!mem_pool)
+		return 0;
+
+	register_count++;
+
+        return 1;
+}
+
+int unregister_device(const char *device)
+{
+        syslog(LOG_INFO, "Stopped monitoring %s for events\n", device);
+
+	if (!(--register_count)) {
+		dm_pool_destroy(mem_pool);
+		mem_pool = NULL;
+	}
+
+        return 1;
+}
+
+/*
+ * Overrides for Emacs so that we follow Linus's tabbing style.
+ * Emacs will notice this stuff at the end of the file and automatically
+ * adjust the settings for this buffer only.  This must remain at the end
+ * of the file.
+ * ---------------------------------------------------------------------------
+ * Local variables:
+ * c-file-style: "linux"
+ * End:
+ */

doc/Makefile.in

@@ -0,0 +1,29 @@
+#
+# Copyright (C) 2004 Red Hat, Inc. All rights reserved.
+#
+# This file is part of the LVM2.
+#
+# This copyrighted material is made available to anyone wishing to use,
+# modify, copy, or redistribute it subject to the terms and conditions
+# of the GNU General Public License v.2.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software Foundation,
+# Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+
+srcdir = @srcdir@
+top_srcdir = @top_srcdir@
+VPATH = @srcdir@
+
+CONFSRC=example.conf
+CONFDEST=lvm.conf
+
+include $(top_srcdir)/make.tmpl
+
+install:
+	@if [ ! -e $(confdir)/$(CONFDEST) ]; then \
+		echo "Installing $(CONFSRC) as $(confdir)/$(CONFDEST)"; \
+		@INSTALL@ -D $(OWNER) $(GROUP) -m 644 $(CONFSRC) \
+			$(confdir)/$(CONFDEST); \
+	fi
+

doc/example.conf

@@ -1,74 +1,112 @@
-# This is an example configuration file for the LVM2 system.  It
-# contains the default settings that would be used if there was no
+# This is an example configuration file for the LVM2 system.
+# It contains the default settings that would be used if there was no
 # /etc/lvm/lvm.conf file.
-# Refer to 'man lvm.conf' for further information.
+#
+# Refer to 'man lvm.conf' for further information including the file layout.
+#
+# To put this file in a different directory and override /etc/lvm set
+# the environment variable LVM_SYSTEM_DIR before running the tools.
 
 
-# This section allows the user to configure which block devices should
+# This section allows you to configure which block devices should
 # be used by the LVM system.
 devices {
 
-    # where do you want your volume groups to appear ?
+    # Where do you want your volume groups to appear ?
     dir = "/dev"
 
     # An array of directories that contain the device nodes you wish
     # to use with LVM2.
-    scan = "/dev"
-
-    # A very important option, that allows you to tune the LVM2 system
-    # to just look at a restricted set of devices that you're
-    # interested in.
+    scan = [ "/dev" ]
 
+    # A filter that tells LVM2 to only use a restricted set of devices.
     # The filter consists of an array of regular expressions.  These
     # expressions can be delimited by a character of your choice, and
     # prefixed with either an 'a' (for accept) or 'r' (for reject).
-    # ATM you cannot use anchors (^ or $) in your regular expression.
+    # The first expression found to match a device name determines if
+    # the device will be accepted or rejected (ignored).  Devices that
+    # don't match any patterns are accepted.
+
+    # Be careful if there there are symbolic links or multiple filesystem 
+    # entries for the same device as each name is checked separately against
+    # the list of patterns.  The effect is that if any name matches any 'a'
+    # pattern, the device is accepted; otherwise if any name matches any 'r'
+    # pattern it is rejected; otherwise it is accepted.
+
+    # Don't have more than one filter line active at once: only one gets used.
+
+    # Run vgscan after you change this parameter to ensure that
+    # the cache file gets regenerated (see below).
+    # If it doesn't do what you expect, check the output of 'vgscan -vvvv'.
 
-    # Remember to run vgscan after you change this parameter.
 
     # By default we accept every block device:
-    filter = "a/.*/"
+    filter = [ "a/.*/" ]
+
+    # Exclude the cdrom drive
+    # filter = [ "r|/dev/cdrom|" ]
 
     # When testing I like to work with just loopback devices:
-    # filter = ["a/loop/", "r/.*/"]
+    # filter = [ "a/loop/", "r/.*/" ]
 
     # Or maybe all loops and ide drives except hdc:
-    # filter =["a|loop|", "r|/dev/hdc|", "a|/dev/ide|", "r|.*|"]
+    # filter =[ "a|loop|", "r|/dev/hdc|", "a|/dev/ide|", "r|.*|" ]
 
-    # The results of all the filtering are cached on disk to avoid
+    # Use anchors if you want to be really specific
+    # filter = [ "a|^/dev/hda8$|", "r/.*/" ]
+
+    # The results of the filtering are cached on disk to avoid
     # rescanning dud devices (which can take a very long time).  By
-    # default this cache file is hidden in the /etc/lvm directory, it
-    # is human readable to aid filter debugging.
+    # default this cache file is hidden in the /etc/lvm directory.
+    # It is safe to delete this file: the tools regenerate it.
     cache = "/etc/lvm/.cache"
 
     # You can turn off writing this cache file by setting this to 0.
     write_cache_state = 1
+
+    # Advanced settings.
+
+    # List of pairs of additional acceptable block device types found 
+    # in /proc/devices with maximum (non-zero) number of partitions.
+    # types = [ "fd", 16 ]
+
+    # If sysfs is mounted (2.6 kernels) restrict device scanning to 
+    # the block devices it believes are valid.
+    # 1 enables; 0 disables.
+    sysfs_scan = 1	
+
+    # By default, LVM2 will ignore devices used as components of
+    # software RAID (md) devices by looking for md superblocks.
+    # 1 enables; 0 disables.
+    md_component_detection = 1
 }
 
-# A section that allows the user to configure the nature of the
+# This section that allows you to configure the nature of the
 # information that LVM2 reports.
 log {
 
-    # Where should the log of error and debug messages go ?  By
-    # default there is no log.
-    #file = "/var/log/lvm2.log"
-
-    # Should we overwrite the last log.  By default we append.
-    overwrite = 0
-
-    # There are 9 log levels, with 9 being the most verbose.
-    level = 3
-    
-    # Controls the messages sent to stdout or stderr while running 
-    # LVM2.  There are three levels of verbosity, 3 being the most 
-    # verbose.
+    # Controls the messages sent to stdout or stderr.
+    # There are three levels of verbosity, 3 being the most verbose.
     verbose = 0
 
     # Should we send log messages through syslog?
     # 1 is yes; 0 is no.
     syslog = 1
 
-    # Choose format of output messages
+    # Should we log error and debug messages to a file?
+    # By default there is no log file.
+    #file = "/var/log/lvm2.log"
+
+    # Should we overwrite the log file each time the program is run?
+    # By default we append.
+    overwrite = 0
+
+    # What level of log messages should we send to the log file and/or syslog?
+    # There are 6 syslog-like log levels currently in use - 2 to 7 inclusive.
+    # 7 is the most verbose (LOG_DEBUG).
+    level = 0
+    
+    # Format of output messages
     # Whether or not (1 or 0) to indent messages according to their severity
     indent = 1
 
@@ -76,13 +114,18 @@ log {
     command_names = 0
 
     # A prefix to use before the message text (but after the command name,
-    # if selected)
+    # if selected).  Default is two spaces, so you can see/grep the severity
+    # of each message.
     prefix = "  "
 
-    # To make the messages look similar to the original LVM use:
+    # To make the messages look similar to the original LVM tools use:
     #   indent = 0
     #   command_names = 1
     #   prefix = " -- "
+
+    # Set this if you want log messages during activation.
+    # Don't use this in low memory situations (can deadlock).
+    # activation = 0
 }
 
 # Configuration of metadata backups and archiving.  In LVM2 when we
@@ -93,19 +136,20 @@ backup {
 
     # Should we maintain a backup of the current metadata configuration ?
     # Use 1 for Yes; 0 for No.
-    # Think very hard before turning this off.
+    # Think very hard before turning this off!
     backup = 1
 
     # Where shall we keep it ?
+    # Remember to back up this directory regularly!
     backup_dir = "/etc/lvm/backup"
 
-
     # Should we maintain an archive of old metadata configurations.
     # Use 1 for Yes; 0 for No.
     # On by default.  Think very hard before turning this off.
     archive = 1
 
     # Where should archived files go ?
+    # Remember to back up this directory regularly!
     archive_dir = "/etc/lvm/archive"
     
     # What is the minimum number of archive files you wish to keep ?
@@ -115,20 +159,15 @@ backup {
     retain_days = 30
 }
 
-# Settings for the running LVM2 in shell mode.
+# Settings for the running LVM2 in shell (readline) mode.
 shell {
 
     # Number of lines of history to store in ~/.lvm_history
     history_size = 100
 }
 
-# Metadata settings
-metadata {
-    # List of directories holding copies of text format metadata
-    dirs = [ "/etc/lvm/metadata" ]
-}
 
-# Miscellaneous global settings
+# Miscellaneous global LVM2 settings
 global {
     
     # The file creation mask for any files and directories created.
@@ -143,10 +182,116 @@ global {
     # command.  Defaults to off.
     test = 0
 
-    # Default metadata format commands use - "lvm1" (default) or "text"
-    format = "lvm1"
+    # Whether or not to communicate with the kernel device-mapper.
+    # Set to 0 if you want to use the tools to manipulate LVM metadata 
+    # without activating any logical volumes.
+    # If the device-mapper kernel driver is not present in your kernel
+    # setting this to 0 should suppress the error messages.
+    activation = 1
+
+    # If we can't communicate with device-mapper, should we try running 
+    # the LVM1 tools?
+    # This option only applies to 2.4 kernels and is provided to help you
+    # switch between device-mapper kernels and LVM1 kernels.
+    # The LVM1 tools need to be installed with .lvm1 suffices
+    # e.g. vgscan.lvm1 and they will stop working after you start using
+    # the new lvm2 on-disk metadata format.
+    # The default value is set when the tools are built.
+    # fallback_to_lvm1 = 0
+
+    # The default metadata format that commands should use - "lvm1" or "lvm2".
+    # The command line override is -M1 or -M2.
+    # Defaults to "lvm1" if compiled in, else "lvm2".
+    # format = "lvm1"
 
     # Location of proc filesystem
     proc = "/proc"
+
+    # Type of locking to use. Defaults to file-based locking (1).
+    # Turn locking off by setting to 0 (dangerous: risks metadata corruption
+    # if LVM2 commands get run concurrently).
+    locking_type = 1
+
+    # Local non-LV directory that holds file-based locks while commands are
+    # in progress.  A directory like /tmp that may get wiped on reboot is OK.
+    locking_dir = "/var/lock/lvm"
+
+    # Other entries can go here to allow you to load shared libraries
+    # e.g. if support for LVM1 metadata was compiled as a shared library use
+    #   format_libraries = "liblvm2format1.so" 
+    # Full pathnames can be given.
+
+    # Search this directory first for shared libraries.
+    #   library_dir = "/lib"
 }
 
+activation {
+    # Device used in place of missing stripes if activating incomplete volume.
+    # For now, you need to set this up yourself first (e.g. with 'dmsetup')
+    # For example, you could make it return I/O errors using the 'error' 
+    # target or make it return zeros.
+    missing_stripe_filler = "/dev/ioerror"
+
+    # Size (in KB) of each copy operation when mirroring
+    mirror_region_size = 512
+
+    # How much stack (in KB) to reserve for use while devices suspended
+    reserved_stack = 256
+
+    # How much memory (in KB) to reserve for use while devices suspended
+    reserved_memory = 8192
+
+    # Nice value used while devices suspended
+    process_priority = -18
+
+    # If volume_list is defined, each LV is only activated if there is a
+    # match against the list.
+    #   "vgname" and "vgname/lvname" are matched exactly.
+    #   "@tag" matches any tag set in the LV or VG.
+    #   "@*" matches if any tag defined on the host is also set in the LV or VG
+    #
+    # volume_list = [ "vg1", "vg2/lvol1", "@tag1", "@*" ]
+}
+
+
+####################
+# Advanced section #
+####################
+
+# Metadata settings
+#
+# metadata {
+    # Default number of copies of metadata to hold on each PV.  0, 1 or 2.
+    # You might want to override it from the command line with 0 
+    # when running pvcreate on new PVs which are to be added to large VGs.
+
+    # pvmetadatacopies = 1
+
+    # Approximate default size of on-disk metadata areas in sectors.
+    # You should increase this if you have large volume groups or
+    # you want to retain a large on-disk history of your metadata changes.
+
+    # pvmetadatasize = 255
+
+    # List of directories holding live copies of text format metadata.
+    # These directories must not be on logical volumes!
+    # It's possible to use LVM2 with a couple of directories here,
+    # preferably on different (non-LV) filesystems, and with no other 
+    # on-disk metadata (pvmetadatacopies = 0). Or this can be in
+    # addition to on-disk metadata areas.
+    # The feature was originally added to simplify testing and is not
+    # supported under low memory situations - the machine could lock up.
+    #
+    # Never edit any files in these directories by hand unless you
+    # you are absolutely sure you know what you are doing! Use
+    # the supplied toolset to make changes (e.g. vgcfgrestore).
+
+    # dirs = [ "/etc/lvm/metadata", "/mnt/disk2/lvm/metadata2" ]
+#}
+
+# Event daemon
+#
+#dmeventd {
+    # mirror_library = "libdevmapper-event-lvm2mirror.so"
+#}
+

doc/example_cmdlib.c

@@ -0,0 +1,47 @@
+/*
+ * Copyright (C) 2004 Red Hat, Inc. All rights reserved.
+ *
+ * This file is part of LVM2.
+ *
+ * This copyrighted material is made available to anyone wishing to use,
+ * modify, copy, or redistribute it subject to the terms and conditions
+ * of the GNU General Public License v.2.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#include "lvm2cmd.h"
+
+/* All output gets passed to this function line-by-line */
+void test_log_fn(int level, const char *file, int line, const char *format)
+{
+	/* Extract and process output here rather than printing it */
+
+	if (level != 4)
+		return;
+
+	printf("%s\n", format);
+	return;
+}
+
+int main(int argc, char **argv)
+{
+	void *handle;
+	int r;
+
+	lvm2_log_fn(test_log_fn);
+
+	handle = lvm2_init();
+
+	lvm2_log_level(handle, 1);
+	r = lvm2_run(handle, "vgs --noheadings vg1");
+
+	/* More commands here */
+
+	lvm2_exit(handle);
+
+	return r;
+}
+

doc/tagging.txt

@@ -0,0 +1,165 @@
+Tagging aims
+============
+  1) Ability to attach an unordered list of tags to LVM metadata objects.
+  2) Ability to add or remove tags easily.
+  3) Ability to select LVM objects for processing according to presence/absence
+     of specific tags.
+  4) Ability to control through the config file which VGs/LVs are activated 
+     on different machines using names or tags.
+  5) Ability to overlay settings from different config files e.g. override
+     some settings in a global config file locally.
+
+Clarifications
+==============
+  1) Tag character set: A-Za-z0-9_+.- 
+     Can't start with hyphen & max length is 128 (NAME_LEN).
+  2) LVM object types that can be tagged:
+       VG, LV, LV segment
+       PV - tags are stored in VG metadata so disappear when PV becomes orphaned
+     Snapshots can't be tagged, but their origin may be.
+  3) A tag can be used in place of any command line LVM object reference that
+     accepts (a) a list of objects; or (b) a single object as long as the
+     tag expands to a single object.  This is not supported everywhere yet.
+     Duplicate arguments in a list after argument expansion may get removed 
+     retaining the first copy of each argument.
+  4) Wherever there may be ambiguity of argument type, a tag must be prefixed 
+     by '@'; elsewhere an '@' prefix is optional.
+  5) LVM1 objects cannot be tagged, as the disk format doesn't support it.
+  6) Tags can be added or removed with --addtag or --deltag.
+
+Config file Extensions
+======================
+  To define host tags in config file:
+
+  tags {
+  	# Set a tag with the hostname
+	hosttags = 1
+
+	tag1 { }
+
+  	tag2 {
+		# If no exact match, tag is not set.
+		host_list = [ "hostname", "dbase" ]
+	}
+  }
+
+Activation config file example
+==============================
+  activation {
+      volume_list = [ "vg1/lvol0", "@database" ]
+  }
+
+  Matches against vgname, vgname/lvname or @tag set in *metadata*.
+  @* matches exactly against *any* tag set on the host.
+  The VG or LV only gets activated if a metadata tag matches.
+  The default if there is no match is not to activate.
+  If volume_list is not present and any tags are defined on the host 
+  then it only activates if a host tag matches a metadata tag.
+  If volume_list is not present and no tags are defined on the host 
+  then it does activate.
+
+Multiple config files
+=====================
+  (a) lvm.conf
+  (b) lvm_<host_tag>.conf
+
+  At startup, load lvm.conf.
+  Process tag settings.
+  If any host tags were defined, load lvm_tag.conf for each tag, if present.
+
+  When searching for a specific config file entry, search order is (b)
+  then (a), stopping at the first match.  
+  Within (b) use reverse order tags got set, so file for last tag set is
+  searched first.
+  New tags set in (b) *do* trigger additional config file loads. 
+
+Usage Examples
+==============
+  1) Simple activation control via metadata with static config files
+
+  lvm.conf:  (Identical on every machine - global settings)
+    tags {
+      hostname_tags = 1
+    }
+
+  From any machine in the cluster, add db1 to the list of machines that
+  activate vg1/lvol2:
+
+  lvchange --tag @db1 vg1/lvol2
+  (followed by lvchange -ay to actually activate it)
+
+
+  2) Multiple hosts.  
+
+    Activate vg1 only on the database hosts, db1 and db2.
+    Activate vg2 only on the fileserver host fs1.
+    Activate nothing initially on the fileserver backup host fsb1, but be
+    prepared for it to take over from fs1.
+
+  Option (i) - centralised admin, static configuration replicated between hosts  
+    # Add @database tag to vg1's metadata
+    vgchange --tag @database vg1
+
+    # Add @fileserver tag to vg2's metadata
+    vgchange --tag @fileserver vg2
+
+    lvm.conf:  (Identical on every machine)
+      tags {
+        database {
+          host_list = [ "db1", "db2" ]
+        }
+        fileserver {
+	  host_list = [ "fs1" ]
+        }
+        fileserverbackup {
+          host_list = [ "fsb1" ]
+        }
+      }
+
+      activation {
+        # Only activate if host has a tag that matches a metadata tag
+        volume_list = [ "@*" ]
+      }
+  
+  In the event of the fileserver host going down, vg2 can be brought up
+  on fsb1 by running *on any node* 'vgchange --tag @fileserverbackup vg2'
+  followed by 'vgchange -ay vg2'
+  
+  
+  Option (ii) - localised admin & configuation
+  (i.e. each host holds *locally* which classes of volumes to activate)
+    # Add @database tag to vg1's metadata
+    vgchange --tag @database vg1
+  
+    # Add @fileserver tag to vg2's metadata
+    vgchange --tag @fileserver vg2
+  
+    lvm.conf:  (Identical on every machine - global settings)
+      tags {
+        hosttags = 1
+      }
+  
+    lvm_db1.conf: (only needs to be on db1 - could be symlink to lvm_db.conf)
+      activation {
+        volume_list = [ "@database" ]
+      }
+  
+    lvm_db2.conf: (only needs to be on db2 - could be symlink to lvm_db.conf)
+      activation {
+        volume_list = [ "@database" ]
+      }
+  
+    lvm_fs1.conf: (only needs to be on fs1 - could be symlink to lvm_fs.conf)
+      activation {
+        volume_list = [ "@fileserver" ]
+      }
+  
+    If fileserver goes down, to bring a spare machine fsb1 in as fileserver,
+    create lvm_fsb1.conf on fsb1 (or symlink to lvm_fs.conf):
+
+      activation {
+        volume_list = [ "@fileserver" ]
+      }
+
+    and run 'vgchange -ay vg2' or 'vgchange -ay @fileserver'
+

include/.symlinks

@@ -1,33 +1,48 @@
+../daemons/clvmd/clvm.h
 ../lib/activate/activate.h
+../lib/activate/targets.h
+../lib/cache/lvmcache.h
 ../lib/commands/errors.h
 ../lib/commands/toolcontext.h
 ../lib/config/config.h
 ../lib/config/defaults.h
-../lib/datastruct/bitset.h
 ../lib/datastruct/btree.h
-../lib/datastruct/hash.h
 ../lib/datastruct/list.h
 ../lib/datastruct/lvm-types.h
+../lib/datastruct/str_list.h
 ../lib/device/dev-cache.h
 ../lib/device/device.h
 ../lib/display/display.h
 ../lib/filters/filter-composite.h
+../lib/filters/filter-md.h
 ../lib/filters/filter-persistent.h
 ../lib/filters/filter-regex.h
+../lib/filters/filter-sysfs.h
 ../lib/filters/filter.h
 ../lib/format1/format1.h
-../lib/format1/lvm1_label.h
+../lib/format_pool/format_pool.h
+../lib/format_text/archiver.h
 ../lib/format_text/format-text.h
+../lib/format_text/text_export.h
+../lib/format_text/text_import.h
 ../lib/label/label.h
-../lib/label/uuid-map.h
 ../lib/locking/locking.h
 ../lib/log/log.h
+../lib/metadata/lv_alloc.h
 ../lib/metadata/metadata.h
-../lib/mm/dbg_malloc.h
-../lib/mm/pool.h
+../lib/metadata/pv_alloc.h
+../lib/metadata/segtype.h
+../lib/mm/memlock.h
 ../lib/mm/xlate.h
+../lib/misc/crc.h
+../lib/misc/intl.h
+../lib/misc/lib.h
+../lib/misc/lvm-exec.h
 ../lib/misc/lvm-file.h
 ../lib/misc/lvm-string.h
+../lib/misc/sharedlib.h
 ../lib/regex/matcher.h
+../lib/report/report.h
 ../lib/uuid/uuid.h
-../lib/vgcache/vgcache.h
+../po/pogen.h
+../tools/version.h

include/Makefile.in

@@ -1,20 +1,16 @@
 #
-# Copyright (C) 2001 Sistina Software
+# Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.
+# Copyright (C) 2004 Red Hat, Inc. All rights reserved.
 #
-# This LVM library is free software; you can redistribute it and/or
-# modify it under the terms of the GNU Library General Public
-# License as published by the Free Software Foundation; either
-# version 2 of the License, or (at your option) any later version.
+# This file is part of the LVM2.
 #
-# This LVM library is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-# Library General Public License for more details.
+# This copyrighted material is made available to anyone wishing to use,
+# modify, copy, or redistribute it subject to the terms and conditions
+# of the GNU General Public License v.2.
 #
-# You should have received a copy of the GNU Library General Public
-# License along with this LVM library; if not, write to the Free
-# Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
-# MA 02111-1307, USA
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software Foundation,
+# Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 
 SHELL = /bin/sh
 
@@ -24,6 +20,8 @@ VPATH = @srcdir@
 
 LN_S = @LN_S@
 
+.PHONY: clean distclean all install pofile install_cluster
+
 all: .symlinks_created
 
 .symlinks_created: .symlinks
@@ -35,9 +33,11 @@ distclean:
 	find . -maxdepth 1 -type l -exec $(RM) \{\} \;
 	$(RM) Makefile .include_symlinks .symlinks_created
 
+pofile: all
+
 clean:
 
 install:
 
-.PHONY: clean distclean all install
+install_cluster:
 

lib/Makefile.in

@@ -1,44 +1,66 @@
 #
-# Copyright (C) 2001 Sistina Software (UK) Limited
+# Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.
+# Copyright (C) 2004-2005 Red Hat, Inc. All rights reserved.
 #
-# This file is released under the GPL.
+# This file is part of the LVM2.
 #
+# This copyrighted material is made available to anyone wishing to use,
+# modify, copy, or redistribute it subject to the terms and conditions
+# of the GNU General Public License v.2.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software Foundation,
+# Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 
 srcdir = @srcdir@
 top_srcdir = @top_srcdir@
 VPATH = @srcdir@
 
-SOURCES=\
+ifeq ("@LVM1@", "shared")
+  SUBDIRS = format1
+endif
+
+ifeq ("@POOL@", "shared")
+  SUBDIRS += format_pool
+endif
+
+ifeq ("@SNAPSHOTS@", "shared")
+  SUBDIRS += snapshot
+endif
+
+ifeq ("@MIRRORS@", "shared")
+  SUBDIRS += mirror
+endif
+
+SOURCES =\
 	activate/activate.c \
-	activate/dev_manager.c \
-	activate/fs.c \
+	cache/lvmcache.c \
+	commands/toolcontext.c \
 	config/config.c \
-	datastruct/bitset.c \
 	datastruct/btree.c \
-	datastruct/hash.c \
+	datastruct/str_list.c \
 	device/dev-cache.c \
 	device/dev-io.c \
+	device/dev-md.c \
 	device/device.c \
 	display/display.c \
+	error/errseg.c \
 	filters/filter-composite.c \
 	filters/filter-persistent.c \
 	filters/filter-regex.c \
+	filters/filter-sysfs.c \
+	filters/filter-md.c \
 	filters/filter.c \
-	format1/disk-rep.c \
-	format1/format1.c \
-	format1/import-export.c \
-	format1/import-extents.c \
-	format1/layout.c \
-	format1/lvm1_label.c \
-	format1/vg_number.c \
 	format_text/archive.c \
+	format_text/archiver.c \
 	format_text/export.c \
 	format_text/flags.c \
 	format_text/format-text.c \
 	format_text/import.c \
+	format_text/import_vsn1.c \
+	format_text/tags.c \
+	format_text/text_label.c \
 	label/label.c \
-	label/uuid-map.c \
-	locking/external_locking.c \
 	locking/file_locking.c \
 	locking/locking.c \
 	locking/no_locking.c \
@@ -46,23 +68,78 @@ SOURCES=\
 	metadata/lv_manip.c \
 	metadata/merge.c \
 	metadata/metadata.c \
+	metadata/mirror.c \
+	metadata/pv_manip.c \
 	metadata/pv_map.c \
+	metadata/segtype.c \
 	metadata/snapshot_manip.c \
+	misc/crc.c \
+	misc/lvm-exec.c \
 	misc/lvm-file.c \
-	mm/dbg_malloc.c \
-	mm/pool.c \
+	misc/lvm-string.c \
+	mm/memlock.c \
 	regex/matcher.c \
 	regex/parse_rx.c \
 	regex/ttree.c \
+	report/report.c \
+	striped/striped.c \
 	uuid/uuid.c \
-	vgcache/vgcache.c
+	zero/zero.c
 
-TARGETS=liblvm.a
+ifeq ("@LVM1@", "internal")
+  SOURCES +=\
+	format1/disk-rep.c \
+	format1/format1.c \
+	format1/import-export.c \
+	format1/import-extents.c \
+	format1/layout.c \
+	format1/lvm1-label.c \
+	format1/vg_number.c
+endif
 
-include ../make.tmpl
+ifeq ("@POOL@", "internal")
+  SOURCES +=\
+	format_pool/disk_rep.c \
+	format_pool/format_pool.c \
+	format_pool/import_export.c \
+	format_pool/pool_label.c
+endif
 
-liblvm.a: $(OBJECTS)
-	$(RM) $@
-	$(AR) r $@ $(OBJECTS)
-	$(RANLIB) $@
+ifeq ("@CLUSTER@", "internal")
+  SOURCES += locking/cluster_locking.c
+endif
+
+ifeq ("@CLUSTER@", "shared")
+  SUBDIRS += locking
+endif
+
+ifeq ("@SNAPSHOTS@", "internal")
+  SOURCES += snapshot/snapshot.c
+endif
+
+ifeq ("@MIRRORS@", "internal")
+  SOURCES += mirror/mirrored.c
+endif
+
+ifeq ("@DEVMAPPER@", "yes")
+  SOURCES +=\
+	activate/dev_manager.c \
+	activate/fs.c
+endif
+
+ifeq ("@HAVE_LIBDL@", "yes")
+  SOURCES +=\
+	locking/external_locking.c \
+	misc/sharedlib.c
+endif
+
+ifeq ("@DMEVENTD@", "yes")
+  CLDFLAGS += -ldevmapper-event
+endif
+
+LIB_STATIC = liblvm.a
+
+$(SUBDIRS): $(LIB_STATIC)
+
+include $(top_srcdir)/make.tmpl
 

lib/activate/activate.h

@@ -1,39 +1,78 @@
 /*
- * Copyright (C) 2001 Sistina Software (UK) Limited.
+ * Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.  
+ * Copyright (C) 2004 Red Hat, Inc. All rights reserved.
  *
- * This file is released under the LGPL.
+ * This file is part of LVM2.
+ *
+ * This copyrighted material is made available to anyone wishing to use,
+ * modify, copy, or redistribute it subject to the terms and conditions
+ * of the GNU General Public License v.2.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
 
 #ifndef LVM_ACTIVATE_H
 #define LVM_ACTIVATE_H
 
-#include <libdevmapper.h>
+#include "metadata.h"
+
+struct lvinfo {
+	int exists;
+	int suspended;
+	unsigned int open_count;
+	int major;
+	int minor;
+	int read_only;
+	int live_table;
+	int inactive_table;
+};
+
+void set_activation(int activation);
+int activation(void);
 
 int driver_version(char *version, size_t size);
 int library_version(char *version, size_t size);
+int lvm1_present(struct cmd_context *cmd);
+
+int target_present(const char *target_name, int use_modprobe);
+int target_version(const char *target_name, uint32_t *maj,
+                   uint32_t *min, uint32_t *patchlevel);
+
+void activation_exit(void);
+
+int lv_suspend(struct cmd_context *cmd, const char *lvid_s);
+int lv_suspend_if_active(struct cmd_context *cmd, const char *lvid_s);
+int lv_resume(struct cmd_context *cmd, const char *lvid_s);
+int lv_resume_if_active(struct cmd_context *cmd, const char *lvid_s);
+int lv_activate(struct cmd_context *cmd, const char *lvid_s, int exclusive);
+int lv_activate_with_filter(struct cmd_context *cmd, const char *lvid_s,
+			    int exclusive);
+int lv_deactivate(struct cmd_context *cmd, const char *lvid_s);
+
+int lv_mknodes(struct cmd_context *cmd, const struct logical_volume *lv);
 
 /*
  * Returns 1 if info structure has been populated, else 0.
  */
-int lv_info(struct logical_volume *lv, struct dm_info *info);
+int lv_info(struct cmd_context *cmd, const struct logical_volume *lv, struct lvinfo *info,
+	    int with_open_count);
+int lv_info_by_lvid(struct cmd_context *cmd, const char *lvid_s,
+		    struct lvinfo *info, int with_open_count);
+
+/*
+ * Returns 1 if activate_lv has been set: 1 = activate; 0 = don't.
+ */
+int lv_activation_filter(struct cmd_context *cmd, const char *lvid_s,
+			 int *activate_lv);
+
 /*
  * Returns 1 if percent has been set, else 0.
  */
-int lv_snapshot_percentage(struct logical_volume *lv, float *percent);
-
-/*
- * These should eventually use config file
- * to determine whether or not to activate
- */
-int lv_suspend_if_active(struct cmd_context *cmd, const char *lvid_s);
-int lv_resume_if_active(struct cmd_context *cmd, const char *lvid_s);
-int lv_activate(struct cmd_context *cmd, const char *lvid_s);
-int lv_deactivate(struct cmd_context *cmd, const char *lvid_s);
-
-/*
- * FIXME:
- * I don't like the *lvs_in_vg* function names.
- */
+int lv_snapshot_percent(struct logical_volume *lv, float *percent);
+int lv_mirror_percent(struct cmd_context *cmd, struct logical_volume *lv, int wait, float *percent,
+		      uint32_t *event_nr);
 
 /*
  * Return number of LVs in the VG that are active.
@@ -41,6 +80,10 @@ int lv_deactivate(struct cmd_context *cmd, const char *lvid_s);
 int lvs_in_vg_activated(struct volume_group *vg);
 int lvs_in_vg_opened(struct volume_group *vg);
 
-int lv_setup_cow_store(struct logical_volume *lv);
+/*
+ * Returns 1 if PV has a dependency tree that uses anything in VG.
+ */
+int pv_uses_vg(struct cmd_context *cmd, struct physical_volume *pv,
+	       struct volume_group *vg);
 
 #endif

lib/activate/dev_manager.h

@@ -1,23 +1,35 @@
 /*
- * Copyright (C) 2002 Sistina Software (UK) Limited.
+ * Copyright (C) 2002-2004 Sistina Software, Inc. All rights reserved.  
+ * Copyright (C) 2004 Red Hat, Inc. All rights reserved.
  *
- * This file is released under the LGPL.
+ * This file is part of LVM2.
+ *
+ * This copyrighted material is made available to anyone wishing to use,
+ * modify, copy, or redistribute it subject to the terms and conditions
+ * of the GNU General Public License v.2.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
 
 #ifndef _LVM_DEV_MANAGER_H
 #define _LVM_DEV_MANAGER_H
 
-#include "metadata.h"
-
-#include <libdevmapper.h>
-
+struct logical_volume;
+struct volume_group;
+struct cmd_context;
 struct dev_manager;
+struct dm_info;
+struct device;
 
 /*
  * Constructor and destructor.
  */
-struct dev_manager *dev_manager_create(const char *vg_name);
+struct dev_manager *dev_manager_create(struct cmd_context *cmd,
+				       const char *vg_name);
 void dev_manager_destroy(struct dev_manager *dm);
+void dev_manager_exit(void);
 
 /*
  * The device handler is responsible for creating all the layered
@@ -25,18 +37,28 @@ void dev_manager_destroy(struct dev_manager *dm);
  * (eg, an origin is created before its snapshot, but is not
  * unsuspended until the snapshot is also created.)
  */
-int dev_manager_info(struct dev_manager *dm, struct logical_volume *lv,
-		     struct dm_info *info);
-int dev_manager_get_snapshot_use(struct dev_manager *dm, 
- 		                   struct logical_volume *lv, float *percent);
+int dev_manager_info(struct dm_pool *mem, const char *name,
+		     const struct logical_volume *lv,
+		     int mknodes, int with_open_count, struct dm_info *info);
+int dev_manager_snapshot_percent(struct dev_manager *dm,
+				 struct logical_volume *lv, float *percent);
+int dev_manager_mirror_percent(struct dev_manager *dm,
+			       struct logical_volume *lv, int wait,
+			       float *percent, uint32_t *event_nr);
 int dev_manager_suspend(struct dev_manager *dm, struct logical_volume *lv);
 int dev_manager_activate(struct dev_manager *dm, struct logical_volume *lv);
+int dev_manager_preload(struct dev_manager *dm, struct logical_volume *lv);
 int dev_manager_deactivate(struct dev_manager *dm, struct logical_volume *lv);
 
+int dev_manager_lv_mknodes(const struct logical_volume *lv);
+int dev_manager_lv_rmnodes(const struct logical_volume *lv);
 
 /*
  * Put the desired changes into effect.
  */
 int dev_manager_execute(struct dev_manager *dm);
 
+int dev_manager_device_uses_vg(struct dev_manager *dm, struct device *dev,
+			       struct volume_group *vg);
+
 #endif

lib/activate/fs.c

@@ -1,31 +1,37 @@
 /*
- * Copyright (C) 2001 Sistina Software (UK) Limited.
+ * Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.  
+ * Copyright (C) 2004 Red Hat, Inc. All rights reserved.
  *
- * This file is released under the LGPL.
+ * This file is part of LVM2.
+ *
+ * This copyrighted material is made available to anyone wishing to use,
+ * modify, copy, or redistribute it subject to the terms and conditions
+ * of the GNU General Public License v.2.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
 
+#include "lib.h"
 #include "fs.h"
-#include "log.h"
 #include "toolcontext.h"
 #include "lvm-string.h"
 #include "lvm-file.h"
+#include "memlock.h"
 
-#include <sys/types.h>
 #include <sys/stat.h>
 #include <fcntl.h>
 #include <unistd.h>
 #include <limits.h>
-#include <stdio.h>
-#include <string.h>
+#include <dirent.h>
 
-#include <libdevmapper.h>
-
-static int _mk_dir(struct volume_group *vg)
+static int _mk_dir(const char *dev_dir, const char *vg_name)
 {
 	char vg_path[PATH_MAX];
 
 	if (lvm_snprintf(vg_path, sizeof(vg_path), "%s%s",
-			 vg->cmd->dev_dir, vg->name) == -1) {
+			 dev_dir, vg_name) == -1) {
 		log_error("Couldn't construct name of volume "
 			  "group directory.");
 		return 0;
@@ -35,7 +41,7 @@ static int _mk_dir(struct volume_group *vg)
 		return 1;
 
 	log_very_verbose("Creating directory %s", vg_path);
-	if (mkdir(vg_path, 0555)) {
+	if (mkdir(vg_path, 0777)) {
 		log_sys_error("mkdir", vg_path);
 		return 0;
 	}
@@ -43,51 +49,119 @@ static int _mk_dir(struct volume_group *vg)
 	return 1;
 }
 
-static int _rm_dir(struct volume_group *vg)
+static int _rm_dir(const char *dev_dir, const char *vg_name)
 {
 	char vg_path[PATH_MAX];
 
 	if (lvm_snprintf(vg_path, sizeof(vg_path), "%s%s",
-			 vg->cmd->dev_dir, vg->name) == -1) {
+			 dev_dir, vg_name) == -1) {
 		log_error("Couldn't construct name of volume "
 			  "group directory.");
 		return 0;
 	}
 
-	log_very_verbose("Removing directory %s", vg_path);
-
-	if (is_empty_dir(vg_path))
+	if (dir_exists(vg_path) && is_empty_dir(vg_path)) {
+		log_very_verbose("Removing directory %s", vg_path);
 		rmdir(vg_path);
+	}
 
 	return 1;
 }
 
-static int _mk_link(struct logical_volume *lv, const char *dev)
+static void _rm_blks(const char *dir)
 {
-	char lv_path[PATH_MAX], link_path[PATH_MAX];
+	const char *name;
+	char path[PATH_MAX];
+	struct dirent *dirent;
+	struct stat buf;
+	DIR *d;
+
+	if (!(d = opendir(dir))) {
+		log_sys_error("opendir", dir);
+		return;
+	}
+
+	while ((dirent = readdir(d))) {
+		name = dirent->d_name;
+
+		if (!strcmp(name, ".") || !strcmp(name, ".."))
+			continue;
+
+		if (lvm_snprintf(path, sizeof(path), "%s/%s", dir, name) == -1) {
+			log_error("Couldn't create path for %s", name);
+			continue;
+		}
+
+		if (!lstat(path, &buf)) {
+			if (!S_ISBLK(buf.st_mode))
+				continue;
+			log_very_verbose("Removing %s", path);
+			if (unlink(path) < 0)
+				log_sys_error("unlink", path);
+		}
+	}
+}
+
+static int _mk_link(const char *dev_dir, const char *vg_name,
+		    const char *lv_name, const char *dev)
+{
+	char lv_path[PATH_MAX], link_path[PATH_MAX], lvm1_group_path[PATH_MAX];
+	char vg_path[PATH_MAX];
 	struct stat buf;
 
-	if (lvm_snprintf(lv_path, sizeof(lv_path), "%s%s/%s",
-			 lv->vg->cmd->dev_dir, lv->vg->name, lv->name) == -1) {
+	if (lvm_snprintf(vg_path, sizeof(vg_path), "%s%s",
+			 dev_dir, vg_name) == -1) {
+		log_error("Couldn't create path for volume group dir %s",
+			  vg_name);
+		return 0;
+	}
+
+	if (lvm_snprintf(lv_path, sizeof(lv_path), "%s/%s", vg_path,
+			 lv_name) == -1) {
 		log_error("Couldn't create source pathname for "
-			  "logical volume link %s", lv->name);
+			  "logical volume link %s", lv_name);
 		return 0;
 	}
 
 	if (lvm_snprintf(link_path, sizeof(link_path), "%s/%s",
 			 dm_dir(), dev) == -1) {
 		log_error("Couldn't create destination pathname for "
-			  "logical volume link for %s", lv->name);
+			  "logical volume link for %s", lv_name);
 		return 0;
 	}
 
+	if (lvm_snprintf(lvm1_group_path, sizeof(lvm1_group_path), "%s/group",
+			 vg_path) == -1) {
+		log_error("Couldn't create pathname for LVM1 group file for %s",
+			  vg_name);
+		return 0;
+	}
+
+	/* To reach this point, the VG must have been locked.
+	 * As locking fails if the VG is active under LVM1, it's 
+	 * now safe to remove any LVM1 devices we find here
+	 * (as well as any existing LVM2 symlink). */
+	if (!lstat(lvm1_group_path, &buf)) {
+		if (!S_ISCHR(buf.st_mode)) {
+			log_error("Non-LVM1 character device found at %s",
+				  lvm1_group_path);
+		} else {
+			_rm_blks(vg_path);
+
+			log_very_verbose("Removing %s", lvm1_group_path);
+			if (unlink(lvm1_group_path) < 0)
+				log_sys_error("unlink", lvm1_group_path);
+		}
+	}
+
 	if (!lstat(lv_path, &buf)) {
-		if (!S_ISLNK(buf.st_mode)) {
+		if (!S_ISLNK(buf.st_mode) && !S_ISBLK(buf.st_mode)) {
 			log_error("Symbolic link %s not created: file exists",
 				  link_path);
 			return 0;
 		}
 
+		log_very_verbose("Removing %s", lv_path);
 		if (unlink(lv_path) < 0) {
 			log_sys_error("unlink", lv_path);
 			return 0;
@@ -100,26 +174,36 @@ static int _mk_link(struct logical_volume *lv, const char *dev)
 		return 0;
 	}
 
+#ifdef HAVE_SELINUX
+        if (!dm_set_selinux_context(lv_path, S_IFLNK)) {
+                stack;
+                return 0;
+        }
+#endif
+
 	return 1;
 }
 
-static int _rm_link(struct logical_volume *lv, const char *lv_name)
+static int _rm_link(const char *dev_dir, const char *vg_name,
+		    const char *lv_name)
 {
 	struct stat buf;
 	char lv_path[PATH_MAX];
 
 	if (lvm_snprintf(lv_path, sizeof(lv_path), "%s%s/%s",
-			 lv->vg->cmd->dev_dir, lv->vg->name, lv_name) == -1) {
+			 dev_dir, vg_name, lv_name) == -1) {
 		log_error("Couldn't determine link pathname.");
 		return 0;
 	}
 
-	log_very_verbose("Removing link %s", lv_path);
 	if (lstat(lv_path, &buf) || !S_ISLNK(buf.st_mode)) {
+		if (errno == ENOENT)
+			return 1;
 		log_error("%s not symbolic link - not removing", lv_path);
 		return 0;
 	}
 
+	log_very_verbose("Removing link %s", lv_path);
 	if (unlink(lv_path) < 0) {
 		log_sys_error("unlink", lv_path);
 		return 0;
@@ -128,35 +212,143 @@ static int _rm_link(struct logical_volume *lv, const char *lv_name)
 	return 1;
 }
 
-int fs_add_lv(struct logical_volume *lv, const char *dev)
+typedef enum {
+	FS_ADD,
+	FS_DEL,
+	FS_RENAME
+} fs_op_t;
+
+static int _do_fs_op(fs_op_t type, const char *dev_dir, const char *vg_name,
+		     const char *lv_name, const char *dev,
+		     const char *old_lv_name)
 {
-	if (!_mk_dir(lv->vg) || !_mk_link(lv, dev)) {
-		stack;
-		return 0;
+	switch (type) {
+	case FS_ADD:
+		if (!_mk_dir(dev_dir, vg_name) ||
+		    !_mk_link(dev_dir, vg_name, lv_name, dev)) {
+			stack;
+			return 0;
+		}
+		break;
+	case FS_DEL:
+		if (!_rm_link(dev_dir, vg_name, lv_name) ||
+		    !_rm_dir(dev_dir, vg_name)) {
+			stack;
+			return 0;
+		}
+		break;
+		/* FIXME Use rename() */
+	case FS_RENAME:
+		if (old_lv_name && !_rm_link(dev_dir, vg_name, old_lv_name))
+			stack;
+
+		if (!_mk_link(dev_dir, vg_name, lv_name, dev))
+			stack;
 	}
 
 	return 1;
 }
 
-int fs_del_lv(struct logical_volume *lv)
+static LIST_INIT(_fs_ops);
+
+struct fs_op_parms {
+	struct list list;
+	fs_op_t type;
+	char *dev_dir;
+	char *vg_name;
+	char *lv_name;
+	char *dev;
+	char *old_lv_name;
+	char names[0];
+};
+
+static void _store_str(char **pos, char **ptr, const char *str)
 {
-	if (!_rm_link(lv, lv->name) || !_rm_dir(lv->vg)) {
-		stack;
+	strcpy(*pos, str);
+	*ptr = *pos;
+	*pos += strlen(*ptr) + 1;
+}
+
+static int _stack_fs_op(fs_op_t type, const char *dev_dir, const char *vg_name,
+			const char *lv_name, const char *dev,
+			const char *old_lv_name)
+{
+	struct fs_op_parms *fsp;
+	size_t len = strlen(dev_dir) + strlen(vg_name) + strlen(lv_name) +
+	    strlen(dev) + strlen(old_lv_name) + 5;
+	char *pos;
+
+	if (!(fsp = dm_malloc(sizeof(*fsp) + len))) {
+		log_error("No space to stack fs operation");
 		return 0;
 	}
 
+	pos = fsp->names;
+	fsp->type = type;
+
+	_store_str(&pos, &fsp->dev_dir, dev_dir);
+	_store_str(&pos, &fsp->vg_name, vg_name);
+	_store_str(&pos, &fsp->lv_name, lv_name);
+	_store_str(&pos, &fsp->dev, dev);
+	_store_str(&pos, &fsp->old_lv_name, old_lv_name);
+
+	list_add(&_fs_ops, &fsp->list);
+
 	return 1;
 }
 
-/* FIXME Use rename() */
+static void _pop_fs_ops(void)
+{
+	struct list *fsph, *fspht;
+	struct fs_op_parms *fsp;
+
+	list_iterate_safe(fsph, fspht, &_fs_ops) {
+		fsp = list_item(fsph, struct fs_op_parms);
+		_do_fs_op(fsp->type, fsp->dev_dir, fsp->vg_name, fsp->lv_name,
+			  fsp->dev, fsp->old_lv_name);
+		list_del(&fsp->list);
+		dm_free(fsp);
+	}
+}
+
+static int _fs_op(fs_op_t type, const char *dev_dir, const char *vg_name,
+		  const char *lv_name, const char *dev, const char *old_lv_name)
+{
+	if (memlock()) {
+		if (!_stack_fs_op(type, dev_dir, vg_name, lv_name, dev,
+				  old_lv_name)) {
+			stack;
+			return 0;
+		}
+		return 1;
+	}
+
+	return _do_fs_op(type, dev_dir, vg_name, lv_name, dev, old_lv_name);
+}
+
+int fs_add_lv(const struct logical_volume *lv, const char *dev)
+{
+	return _fs_op(FS_ADD, lv->vg->cmd->dev_dir, lv->vg->name, lv->name,
+		      dev, "");
+}
+
+int fs_del_lv(const struct logical_volume *lv)
+{
+	return _fs_op(FS_DEL, lv->vg->cmd->dev_dir, lv->vg->name, lv->name,
+		      "", "");
+}
+
 int fs_rename_lv(struct logical_volume *lv,
 		 const char *dev, const char *old_name)
 {
-	if (old_name && !_rm_link(lv, old_name))
-		stack;
-
-	if (!_mk_link(lv, dev))
-		stack;
-
-	return 1;
+	return _fs_op(FS_RENAME, lv->vg->cmd->dev_dir, lv->vg->name, lv->name,
+		      dev, old_name);
+}
+
+void fs_unlock(void)
+{
+	if (!memlock()) {
+		dm_lib_release();
+		_pop_fs_ops();
+	}
 }

lib/activate/fs.h

@@ -1,7 +1,16 @@
 /*
- * Copyright (C) 2001 Sistina Software (UK) Limited.
+ * Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.  
+ * Copyright (C) 2004 Red Hat, Inc. All rights reserved.
  *
- * This file is released under the LGPL.
+ * This file is part of LVM2.
+ *
+ * This copyrighted material is made available to anyone wishing to use,
+ * modify, copy, or redistribute it subject to the terms and conditions
+ * of the GNU General Public License v.2.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
 
 #ifndef _LVM_FS_H
@@ -14,10 +23,10 @@
  * up the volume group directory in /dev and the
  * symbolic links to the dm device.
  */
-int fs_add_lv(struct logical_volume *lv, const char *dev);
-int fs_del_lv(struct logical_volume *lv);
+int fs_add_lv(const struct logical_volume *lv, const char *dev);
+int fs_del_lv(const struct logical_volume *lv);
 int fs_rename_lv(struct logical_volume *lv,
 		 const char *dev, const char *old_name);
-
+void fs_unlock(void);
 
 #endif

lib/activate/targets.h

@@ -0,0 +1,34 @@
+/*
+ * Copyright (C) 2003-2004 Sistina Software, Inc. All rights reserved.  
+ * Copyright (C) 2004 Red Hat, Inc. All rights reserved.
+ *
+ * This file is part of LVM2.
+ *
+ * This copyrighted material is made available to anyone wishing to use,
+ * modify, copy, or redistribute it subject to the terms and conditions
+ * of the GNU General Public License v.2.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#ifndef _LVM_TARGETS_H
+#define _LVM_TARGETS_H
+
+struct dev_manager;
+struct lv_segment;
+
+int compose_areas_line(struct dev_manager *dm, struct lv_segment *seg,
+		       char *params, size_t paramsize, int *pos,
+		       int start_area, int areas);
+
+int add_areas_line(struct dev_manager *dm, struct lv_segment *seg,
+                   struct dm_tree_node *node, int start_area, int areas);
+
+int build_dev_string(struct dev_manager *dm, char *dlid, char *devbuf,
+		     size_t bufsize, const char *desc);
+
+char *build_dlid(struct dev_manager *dm, const char *lvid, const char *layer);
+
+#endif

lib/cache/lvmcache.c

@@ -0,0 +1,620 @@
+/*
+ * Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.  
+ * Copyright (C) 2004 Red Hat, Inc. All rights reserved.
+ *
+ * This file is part of LVM2.
+ *
+ * This copyrighted material is made available to anyone wishing to use,
+ * modify, copy, or redistribute it subject to the terms and conditions
+ * of the GNU General Public License v.2.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ */
+
+#include "lib.h"
+#include "lvmcache.h"
+#include "toolcontext.h"
+#include "dev-cache.h"
+#include "metadata.h"
+#include "filter.h"
+#include "memlock.h"
+#include "str_list.h"
+
+static struct dm_hash_table *_pvid_hash = NULL;
+static struct dm_hash_table *_vgid_hash = NULL;
+static struct dm_hash_table *_vgname_hash = NULL;
+static struct dm_hash_table *_lock_hash = NULL;
+static struct list _vginfos;
+static int _has_scanned = 0;
+static int _vgs_locked = 0;
+
+int lvmcache_init(void)
+{
+	list_init(&_vginfos);
+
+	if (!(_vgname_hash = dm_hash_create(128)))
+		return 0;
+
+	if (!(_vgid_hash = dm_hash_create(128)))
+		return 0;
+
+	if (!(_pvid_hash = dm_hash_create(128)))
+		return 0;
+
+	if (!(_lock_hash = dm_hash_create(128)))
+		return 0;
+
+	return 1;
+}
+
+void lvmcache_lock_vgname(const char *vgname, int read_only)
+{
+	if (!_lock_hash && !lvmcache_init()) {
+		log_error("Internal cache initialisation failed");
+		return;
+	}
+
+	if (!dm_hash_insert(_lock_hash, vgname, (void *) 1))
+		log_error("Cache locking failure for %s", vgname);
+
+	_vgs_locked++;
+}
+
+int vgname_is_locked(const char *vgname)
+{
+	if (!_lock_hash)
+		return 0;
+
+	return dm_hash_lookup(_lock_hash, vgname) ? 1 : 0;
+}
+
+void lvmcache_unlock_vgname(const char *vgname)
+{
+	/* FIXME: Clear all CACHE_LOCKED flags in this vg */
+	dm_hash_remove(_lock_hash, vgname);
+
+	/* FIXME Do this per-VG */
+	if (!--_vgs_locked)
+		dev_close_all();
+}
+
+int vgs_locked(void)
+{
+	return _vgs_locked;
+}
+
+struct lvmcache_vginfo *vginfo_from_vgname(const char *vgname)
+{
+	struct lvmcache_vginfo *vginfo;
+
+	if (!_vgname_hash)
+		return NULL;
+
+	if (!(vginfo = dm_hash_lookup(_vgname_hash, vgname)))
+		return NULL;
+
+	return vginfo;
+}
+
+const struct format_type *fmt_from_vgname(const char *vgname)
+{
+	struct lvmcache_vginfo *vginfo;
+	struct lvmcache_info *info;
+	struct label *label;
+	struct list *devh, *tmp;
+	struct list devs;
+	struct device_list *devl;
+
+	if (!(vginfo = vginfo_from_vgname(vgname)))
+		return NULL;
+
+	/* This function is normally called before reading metadata so
+ 	 * we check cached labels here. Unfortunately vginfo is volatile. */
+	list_init(&devs);
+	list_iterate_items(info, &vginfo->infos) {
+		devl = dm_malloc(sizeof(*devl));
+		devl->dev = info->dev;
+		list_add(&devs, &devl->list);
+	}
+
+	list_iterate_safe(devh, tmp, &devs) {
+		devl = list_item(devh, struct device_list);
+		label_read(devl->dev, &label);
+		list_del(&devl->list);
+		dm_free(devl);
+	}
+
+	return vginfo->fmt;
+}
+
+struct lvmcache_vginfo *vginfo_from_vgid(const char *vgid)
+{
+	struct lvmcache_vginfo *vginfo;
+	char id[ID_LEN + 1];
+
+	if (!_vgid_hash || !vgid)
+		return NULL;
+
+	/* vgid not necessarily NULL-terminated */
+	strncpy(&id[0], vgid, ID_LEN);
+	id[ID_LEN] = '\0';
+
+	if (!(vginfo = dm_hash_lookup(_vgid_hash, id)))
+		return NULL;
+
+	return vginfo;
+}
+
+struct lvmcache_info *info_from_pvid(const char *pvid)
+{
+	struct lvmcache_info *info;
+	char id[ID_LEN + 1];
+
+	if (!_pvid_hash || !pvid)
+		return NULL;
+
+	strncpy(&id[0], pvid, ID_LEN);
+	id[ID_LEN] = '\0';
+
+	if (!(info = dm_hash_lookup(_pvid_hash, id)))
+		return NULL;
+
+	return info;
+}
+
+static void _rescan_entry(struct lvmcache_info *info)
+{
+	struct label *label;
+
+	if (info->status & CACHE_INVALID)
+		label_read(info->dev, &label);
+}
+
+static int _scan_invalid(void)
+{
+	dm_hash_iter(_pvid_hash, (dm_hash_iterate_fn) _rescan_entry);
+
+	return 1;
+}
+
+int lvmcache_label_scan(struct cmd_context *cmd, int full_scan)
+{
+	struct label *label;
+	struct dev_iter *iter;
+	struct device *dev;
+	struct format_type *fmt;
+
+	static int _scanning_in_progress = 0;
+	int r = 0;
+
+	/* Avoid recursion when a PVID can't be found! */
+	if (_scanning_in_progress)
+		return 0;
+
+	_scanning_in_progress = 1;
+
+	if (!_vgname_hash && !lvmcache_init()) {
+		log_error("Internal cache initialisation failed");
+		goto out;
+	}
+
+	if (_has_scanned && !full_scan) {
+		r = _scan_invalid();
+		goto out;
+	}
+
+	if (!(iter = dev_iter_create(cmd->filter, (full_scan == 2) ? 1: 0))) {
+		log_error("dev_iter creation failed");
+		goto out;
+	}
+
+	while ((dev = dev_iter_get(iter)))
+		label_read(dev, &label);
+
+	dev_iter_destroy(iter);
+
+	_has_scanned = 1;
+
+	/* Perform any format-specific scanning e.g. text files */
+	list_iterate_items(fmt, &cmd->formats) {
+		if (fmt->ops->scan && !fmt->ops->scan(fmt))
+			goto out;
+	}
+
+	r = 1;
+
+      out:
+	_scanning_in_progress = 0;
+
+	return r;
+}
+
+struct list *lvmcache_get_vgnames(struct cmd_context *cmd, int full_scan)
+{
+	struct list *vgnames;
+	struct lvmcache_vginfo *vgi;
+
+	lvmcache_label_scan(cmd, full_scan);
+
+	if (!(vgnames = str_list_create(cmd->mem))) {
+		log_error("vgnames list allocation failed");
+		return NULL;
+	}
+
+	list_iterate_items(vgi, &_vginfos) {
+		if (!str_list_add(cmd->mem, vgnames, 
+				  dm_pool_strdup(cmd->mem, vgi->vgname))) {
+			log_error("strlist allocation failed");
+			return NULL;
+		}
+	}
+
+	return vgnames;
+}
+
+struct device *device_from_pvid(struct cmd_context *cmd, struct id *pvid)
+{
+	struct label *label;
+	struct lvmcache_info *info;
+
+	/* Already cached ? */
+	if ((info = info_from_pvid((char *) pvid))) {
+		if (label_read(info->dev, &label)) {
+			info = (struct lvmcache_info *) label->info;
+			if (id_equal(pvid, (struct id *) &info->dev->pvid))
+				return info->dev;
+		}
+	}
+
+	lvmcache_label_scan(cmd, 0);
+
+	/* Try again */
+	if ((info = info_from_pvid((char *) pvid))) {
+		if (label_read(info->dev, &label)) {
+			info = (struct lvmcache_info *) label->info;
+			if (id_equal(pvid, (struct id *) &info->dev->pvid))
+				return info->dev;
+		}
+	}
+
+	if (memlock())
+		return NULL;
+
+	lvmcache_label_scan(cmd, 2);
+
+	/* Try again */
+	if ((info = info_from_pvid((char *) pvid))) {
+		if (label_read(info->dev, &label)) {
+			info = (struct lvmcache_info *) label->info;
+			if (id_equal(pvid, (struct id *) &info->dev->pvid))
+				return info->dev;
+		}
+	}
+
+	return NULL;
+}
+
+static void _drop_vginfo(struct lvmcache_info *info)
+{
+	if (!list_empty(&info->list)) {
+		list_del(&info->list);
+		list_init(&info->list);
+	}
+
+	if (info->vginfo && list_empty(&info->vginfo->infos)) {
+		dm_hash_remove(_vgname_hash, info->vginfo->vgname);
+		if (info->vginfo->vgname)
+			dm_free(info->vginfo->vgname);
+		if (*info->vginfo->vgid)
+			dm_hash_remove(_vgid_hash, info->vginfo->vgid);
+		list_del(&info->vginfo->list);
+		dm_free(info->vginfo);
+	}
+
+	info->vginfo = NULL;
+}
+
+/* Unused
+void lvmcache_del(struct lvmcache_info *info)
+{
+	if (info->dev->pvid[0] && _pvid_hash)
+		dm_hash_remove(_pvid_hash, info->dev->pvid);
+
+	_drop_vginfo(info);
+
+	info->label->labeller->ops->destroy_label(info->label->labeller,
+						info->label); 
+	dm_free(info);
+
+	return;
+} */
+
+static int _lvmcache_update_pvid(struct lvmcache_info *info, const char *pvid)
+{
+	if (!strcmp(info->dev->pvid, pvid))
+		return 1;
+	if (*info->dev->pvid) {
+		dm_hash_remove(_pvid_hash, info->dev->pvid);
+	}
+	strncpy(info->dev->pvid, pvid, sizeof(info->dev->pvid));
+	if (!dm_hash_insert(_pvid_hash, pvid, info)) {
+		log_error("_lvmcache_update: pvid insertion failed: %s", pvid);
+		return 0;
+	}
+
+	return 1;
+}
+
+static int _lvmcache_update_vgid(struct lvmcache_info *info, const char *vgid)
+{
+	if (!vgid || !info->vginfo || !strncmp(info->vginfo->vgid, vgid,
+					       sizeof(info->vginfo->vgid)))
+		return 1;
+
+	if (info->vginfo && *info->vginfo->vgid)
+		dm_hash_remove(_vgid_hash, info->vginfo->vgid);
+	if (!vgid)
+		return 1;
+
+	strncpy(info->vginfo->vgid, vgid, sizeof(info->vginfo->vgid));
+	info->vginfo->vgid[sizeof(info->vginfo->vgid) - 1] = '\0';
+	if (!dm_hash_insert(_vgid_hash, info->vginfo->vgid, info->vginfo)) {
+		log_error("_lvmcache_update: vgid hash insertion failed: %s",
+			  info->vginfo->vgid);
+		return 0;
+	}
+
+	return 1;
+}
+
+int lvmcache_update_vgname(struct lvmcache_info *info, const char *vgname)
+{
+	struct lvmcache_vginfo *vginfo;
+
+	/* If vgname is NULL and we don't already have a vgname, 
+	 * assume ORPHAN - we want every entry to have a vginfo
+	 * attached for scanning reasons.
+	 */
+	if (!vgname && !info->vginfo)
+		vgname = ORPHAN;
+
+	if (!vgname || (info->vginfo && !strcmp(info->vginfo->vgname, vgname)))
+		return 1;
+
+	/* Remove existing vginfo entry */
+	_drop_vginfo(info);
+
+	/* Get existing vginfo or create new one */
+	if (!(vginfo = vginfo_from_vgname(vgname))) {
+		if (!(vginfo = dm_malloc(sizeof(*vginfo)))) {
+			log_error("lvmcache_update_vgname: list alloc failed");
+			return 0;
+		}
+		memset(vginfo, 0, sizeof(*vginfo));
+		if (!(vginfo->vgname = dm_strdup(vgname))) {
+			dm_free(vginfo);
+			log_error("cache vgname alloc failed for %s", vgname);
+			return 0;
+		}
+		list_init(&vginfo->infos);
+		if (!dm_hash_insert(_vgname_hash, vginfo->vgname, vginfo)) {
+			log_error("cache_update: vg hash insertion failed: %s",
+				  vginfo->vgname);
+			dm_free(vginfo->vgname);
+			dm_free(vginfo);
+			return 0;
+		}
+		/* Ensure orphans appear last on list_iterate */
+		if (!*vgname)
+			list_add(&_vginfos, &vginfo->list);
+		else
+			list_add_h(&_vginfos, &vginfo->list);
+	}
+
+	info->vginfo = vginfo;
+	list_add(&vginfo->infos, &info->list);
+
+	/* FIXME Check consistency of list! */
+	vginfo->fmt = info->fmt;
+
+	log_debug("lvmcache: %s now %s%s", dev_name(info->dev),
+		  *vgname ? "in VG " : "orphaned", vgname);
+
+	return 1;
+}
+
+int lvmcache_update_vg(struct volume_group *vg)
+{
+	struct pv_list *pvl;
+	struct lvmcache_info *info;
+	char pvid_s[ID_LEN + 1];
+	int vgid_updated = 0;
+
+	pvid_s[sizeof(pvid_s) - 1] = '\0';
+
+	list_iterate_items(pvl, &vg->pvs) {
+		strncpy(pvid_s, (char *) &pvl->pv->id, sizeof(pvid_s) - 1);
+		/* FIXME Could pvl->pv->dev->pvid ever be different? */
+		if ((info = info_from_pvid(pvid_s))) {
+			lvmcache_update_vgname(info, vg->name);
+			if (!vgid_updated) {
+				_lvmcache_update_vgid(info, (char *) &vg->id);
+				vgid_updated = 1;
+			}
+		}
+	}
+
+	return 1;
+}
+
+struct lvmcache_info *lvmcache_add(struct labeller *labeller, const char *pvid,
+				   struct device *dev,
+				   const char *vgname, const char *vgid)
+{
+	struct label *label;
+	struct lvmcache_info *existing, *info;
+	char pvid_s[ID_LEN + 1];
+
+	if (!_vgname_hash && !lvmcache_init()) {
+		log_error("Internal cache initialisation failed");
+		return NULL;
+	}
+
+	strncpy(pvid_s, pvid, sizeof(pvid_s));
+	pvid_s[sizeof(pvid_s) - 1] = '\0';
+
+	if (!(existing = info_from_pvid(pvid_s)) &&
+	    !(existing = info_from_pvid(dev->pvid))) {
+		if (!(label = label_create(labeller))) {
+			stack;
+			return NULL;
+		}
+		if (!(info = dm_malloc(sizeof(*info)))) {
+			log_error("lvmcache_info allocation failed");
+			label_destroy(label);
+			return NULL;
+		}
+		memset(info, 0, sizeof(*info));
+
+		label->info = info;
+		info->label = label;
+		list_init(&info->list);
+		info->dev = dev;
+	} else {
+		if (existing->dev != dev) {
+			/* Is the existing entry a duplicate pvid e.g. md ? */
+			if (MAJOR(existing->dev->dev) == md_major() &&
+			    MAJOR(dev->dev) != md_major()) {
+				log_very_verbose("Ignoring duplicate PV %s on "
+						 "%s - using md %s",
+						 pvid, dev_name(dev),
+						 dev_name(existing->dev));
+				return NULL;
+			} else if (dm_is_dm_major(MAJOR(existing->dev->dev)) &&
+				   !dm_is_dm_major(MAJOR(dev->dev))) {
+				log_very_verbose("Ignoring duplicate PV %s on "
+						 "%s - using dm %s",
+						 pvid, dev_name(dev),
+						 dev_name(existing->dev));
+				return NULL;
+			} else if (MAJOR(existing->dev->dev) != md_major() &&
+				   MAJOR(dev->dev) == md_major())
+				log_very_verbose("Duplicate PV %s on %s - "
+						 "using md %s", pvid,
+						 dev_name(existing->dev),
+						 dev_name(dev));
+			else if (!dm_is_dm_major(MAJOR(existing->dev->dev)) &&
+				 dm_is_dm_major(MAJOR(dev->dev)))
+				log_very_verbose("Duplicate PV %s on %s - "
+						 "using dm %s", pvid,
+						 dev_name(existing->dev),
+						 dev_name(dev));
+			/* FIXME If both dm, check dependencies */
+			//else if (dm_is_dm_major(MAJOR(existing->dev->dev)) &&
+				 //dm_is_dm_major(MAJOR(dev->dev)))
+				 //
+			else
+				log_error("Found duplicate PV %s: using %s not "
+					  "%s", pvid, dev_name(dev),
+					  dev_name(existing->dev));
+		}
+		/* Switch over to new preferred device */
+		existing->dev = dev;
+		info = existing;
+		/* Has labeller changed? */
+		if (info->label->labeller != labeller) {
+			label_destroy(info->label);
+			if (!(info->label = label_create(labeller))) {
+				/* FIXME leaves info without label! */
+				stack;
+				return NULL;
+			}
+			info->label->info = info;
+		}
+		label = info->label;
+	}
+
+	info->fmt = (const struct format_type *) labeller->private;
+	info->status |= CACHE_INVALID;
+
+	if (!_lvmcache_update_pvid(info, pvid_s)) {
+		if (!existing) {
+			dm_free(info);
+			label_destroy(label);
+		}
+		return NULL;
+	}
+
+	if (!lvmcache_update_vgname(info, vgname)) {
+		if (!existing) {
+			dm_hash_remove(_pvid_hash, pvid_s);
+			strcpy(info->dev->pvid, "");
+			dm_free(info);
+			label_destroy(label);
+		}
+		return NULL;
+	}
+
+	if (!_lvmcache_update_vgid(info, vgid))
+		/* Non-critical */
+		stack;
+
+	return info;
+}
+
+static void _lvmcache_destroy_entry(struct lvmcache_info *info)
+{
+	if (!list_empty(&info->list))
+		list_del(&info->list);
+	strcpy(info->dev->pvid, "");
+	label_destroy(info->label);
+	dm_free(info);
+}
+
+static void _lvmcache_destroy_vgnamelist(struct lvmcache_vginfo *vginfo)
+{
+	if (vginfo->vgname)
+		dm_free(vginfo->vgname);
+	dm_free(vginfo);
+}
+
+static void _lvmcache_destroy_lockname(int present)
+{
+	/* Nothing to do */
+}
+
+void lvmcache_destroy(void)
+{
+	log_verbose("Wiping internal VG cache");
+
+	_has_scanned = 0;
+
+	if (_vgid_hash) {
+		dm_hash_destroy(_vgid_hash);
+		_vgid_hash = NULL;
+	}
+
+	if (_pvid_hash) {
+		dm_hash_iter(_pvid_hash, (dm_hash_iterate_fn) _lvmcache_destroy_entry);
+		dm_hash_destroy(_pvid_hash);
+		_pvid_hash = NULL;
+	}
+
+	if (_vgname_hash) {
+		dm_hash_iter(_vgname_hash,
+			  (dm_hash_iterate_fn) _lvmcache_destroy_vgnamelist);
+		dm_hash_destroy(_vgname_hash);
+		_vgname_hash = NULL;
+	}
+
+	if (_lock_hash) {
+		dm_hash_iter(_lock_hash, (dm_hash_iterate_fn) _lvmcache_destroy_lockname);
+		dm_hash_destroy(_lock_hash);
+		_lock_hash = NULL;
+	}
+
+	list_init(&_vginfos);
+}

lib/cache/lvmcache.h

@@ -0,0 +1,90 @@
+/*
+ * Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.  
+ * Copyright (C) 2004 Red Hat, Inc. All rights reserved.
+ *
+ * This file is part of LVM2.
+ *
+ * This copyrighted material is made available to anyone wishing to use,
+ * modify, copy, or redistribute it subject to the terms and conditions
+ * of the GNU General Public License v.2.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ */
+
+#ifndef _LVM_CACHE_H
+#define _LVM_CACHE_H
+
+#include "dev-cache.h"
+#include "uuid.h"
+#include "label.h"
+
+#define ORPHAN ""
+
+#define CACHE_INVALID	0x00000001
+#define CACHE_LOCKED	0x00000002
+
+/* LVM specific per-volume info */
+/* Eventual replacement for struct physical_volume perhaps? */
+
+struct cmd_context;
+struct format_type;
+struct volume_group;
+
+struct lvmcache_vginfo {
+	struct list list;	/* Join these vginfos together */
+	struct list infos;	/* List head for lvmcache_infos */
+	const struct format_type *fmt;
+	char *vgname;		/* "" == orphan */
+	char vgid[ID_LEN + 1];
+	char _padding[7];
+};
+
+struct lvmcache_info {
+	struct list list;	/* Join VG members together */
+	struct list mdas;	/* list head for metadata areas */
+	struct list das;	/* list head for data areas */
+	struct lvmcache_vginfo *vginfo;	/* NULL == unknown */
+	struct label *label;
+	const struct format_type *fmt;
+	struct device *dev;
+	uint64_t device_size;	/* Bytes */
+	uint32_t status;
+};
+
+int lvmcache_init(void);
+void lvmcache_destroy(void);
+
+/* Set full_scan to 1 to reread every filtered device label or
+ * 2 to rescan /dev for new devices */
+int lvmcache_label_scan(struct cmd_context *cmd, int full_scan);
+
+/* Add/delete a device */
+struct lvmcache_info *lvmcache_add(struct labeller *labeller, const char *pvid,
+				   struct device *dev,
+				   const char *vgname, const char *vgid);
+void lvmcache_del(struct lvmcache_info *info);
+
+/* Update things */
+int lvmcache_update_vgname(struct lvmcache_info *info, const char *vgname);
+int lvmcache_update_vg(struct volume_group *vg);
+
+void lvmcache_lock_vgname(const char *vgname, int read_only);
+void lvmcache_unlock_vgname(const char *vgname);
+
+/* Queries */
+const struct format_type *fmt_from_vgname(const char *vgname);
+struct lvmcache_vginfo *vginfo_from_vgname(const char *vgname);
+struct lvmcache_vginfo *vginfo_from_vgid(const char *vgid);
+struct lvmcache_info *info_from_pvid(const char *pvid);
+struct device *device_from_pvid(struct cmd_context *cmd, struct id *pvid);
+int vgs_locked(void);
+int vgname_is_locked(const char *vgname);
+
+/* Returns list of struct str_lists containing pool-allocated copy of vgnames */
+/* Set full_scan to 1 to reread every filtered device label */
+struct list *lvmcache_get_vgnames(struct cmd_context *cmd, int full_scan);
+
+#endif

lib/commands/errors.h

@@ -1,16 +1,24 @@
 /*
- * Copyright (C) 2001 Sistina Software (UK) Limited.
+ * Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.  
+ * Copyright (C) 2004 Red Hat, Inc. All rights reserved.
  *
- * This file is released under the LGPL.
+ * This file is part of LVM2.
+ *
+ * This copyrighted material is made available to anyone wishing to use,
+ * modify, copy, or redistribute it subject to the terms and conditions
+ * of the GNU General Public License v.2.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
 
 #ifndef _LVM_ERRORS_H
 #define _LVM_ERRORS_H
 
-#define EINVALID_CMD_LINE	1
-#define ENO_SUCH_CMD		3
-#define ECMD_PROCESSED		4
+#define ECMD_PROCESSED		1
+#define ENO_SUCH_CMD		2
+#define EINVALID_CMD_LINE	3
 #define ECMD_FAILED		5
 
 #endif
-

lib/commands/toolcontext.h

@@ -1,37 +1,94 @@
 /*
- * Copyright (C) 2001 Sistina Software (UK) Limited.
+ * Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.  
+ * Copyright (C) 2004 Red Hat, Inc. All rights reserved.
  *
- * This file is released under the LGPL.
+ * This file is part of LVM2.
  *
+ * This copyrighted material is made available to anyone wishing to use,
+ * modify, copy, or redistribute it subject to the terms and conditions
+ * of the GNU General Public License v.2.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
 
 #ifndef _LVM_TOOLCONTEXT_H
 #define _LVM_TOOLCONTEXT_H
 
 #include "dev-cache.h"
-#include "config.h"
-#include "pool.h"
-#include "metadata.h"
 
-/* command-instance-related variables needed by library */
-struct cmd_context {
-	/* format handler allocates all objects from here */
-	struct pool *mem;
+#include <stdio.h>
+#include <limits.h>
 
-	struct format_type *fmt;	/* Current format to use by default */
-
-	/* FIXME Move into dynamic list */
-	struct format_type *fmt1;	/* Format1 */
-	struct format_type *fmtt;	/* Format_text */
-
-	char *cmd_line;
-	char *dev_dir;
-	struct dev_filter *filter;
-	struct config_file *cf;
-
-	struct command *command;
-	struct uuid_map *um;
-	struct arg *args;
+/*
+ * Config options that can be changed while commands are processed
+ */
+struct config_info {
+	int debug;
+	int verbose;
+	int test;
+	int syslog;
+	int activation;
+	int suffix;
+	int archive;		/* should we archive ? */
+	int backup;		/* should we backup ? */
+	const char *msg_prefix;
+	struct format_type *fmt;
+	uint64_t unit_factor;
+	int cmd_name;		/* Show command name? */
+	mode_t umask;
+	char unit_type;
+	char _padding[1];
 };
 
+struct config_tree;
+struct archive_params;
+struct backup_params;
+
+/* FIXME Split into tool & library contexts */
+/* command-instance-related variables needed by library */
+struct cmd_context {
+	struct dm_pool *libmem;	/* For permanent config data */
+	struct dm_pool *mem;	/* Transient: Cleared between each command */
+
+	const struct format_type *fmt;	/* Current format to use by default */
+	struct format_type *fmt_backup;	/* Format to use for backups */
+
+	struct list formats;	/* Available formats */
+	struct list segtypes;	/* Available segment types */
+	const char *hostname;
+	const char *kernel_vsn;
+
+	char *cmd_line;
+	struct command *command;
+	struct arg *args;
+	char **argv;
+
+	struct dev_filter *filter;
+	int dump_filter;	/* Dump filter when exiting? */
+
+	struct list config_files;
+	int config_valid;
+	struct config_tree *cft;
+	struct config_info default_settings;
+	struct config_info current_settings;
+
+	struct archive_params *archive_params;
+	struct backup_params *backup_params;
+
+	/* List of defined tags */
+	struct list tags;
+	int hosttags;
+
+	char sys_dir[PATH_MAX];
+	char dev_dir[PATH_MAX];
+	char proc_dir[PATH_MAX];
+};
+
+struct cmd_context *create_toolcontext(struct arg *the_args);
+void destroy_toolcontext(struct cmd_context *cmd);
+int refresh_toolcontext(struct cmd_context *cmd);
+int config_files_changed(struct cmd_context *cmd);
+
 #endif

lib/config/config.c

@@ -1,21 +1,30 @@
 /*
- * Copyright (C) 2001 Sistina Software (UK) Limited.
+ * Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.  
+ * Copyright (C) 2004 Red Hat, Inc. All rights reserved.
  *
- * This file is released under the LGPL.
+ * This file is part of LVM2.
+ *
+ * This copyrighted material is made available to anyone wishing to use,
+ * modify, copy, or redistribute it subject to the terms and conditions
+ * of the GNU General Public License v.2.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
 
-#include <sys/types.h>
+#include "lib.h"
+#include "config.h"
+#include "crc.h"
+#include "device.h"
+#include "str_list.h"
+#include "toolcontext.h"
+
 #include <sys/stat.h>
 #include <sys/mman.h>
 #include <unistd.h>
 #include <fcntl.h>
 #include <ctype.h>
-#include <string.h>
-#include <errno.h>
-
-#include "config.h"
-#include "pool.h"
-#include "log.h"
 
 enum {
 	TOK_INT,
@@ -32,23 +41,26 @@ enum {
 };
 
 struct parser {
-	const char *fb, *fe;	/* file limits */
+	char *fb, *fe;		/* file limits */
 
 	int t;			/* token limits and type */
-	const char *tb, *te;
+	char *tb, *te;
 
 	int fd;			/* descriptor for file being parsed */
 	int line;		/* line number we are on */
 
-	struct pool *mem;
+	struct dm_pool *mem;
 };
 
 struct cs {
-	struct config_file cf;
-	struct pool *mem;
+	struct config_tree cft;
+	struct dm_pool *mem;
+	time_t timestamp;
+	char *filename;
+	int exists;
 };
 
-static void _get_token(struct parser *p);
+static void _get_token(struct parser *p, int tok_prev);
 static void _eat_space(struct parser *p);
 static struct config_node *_file(struct parser *p);
 static struct config_node *_section(struct parser *p);
@@ -59,6 +71,8 @@ static struct config_value *_create_value(struct parser *p);
 static struct config_node *_create_node(struct parser *p);
 static char *_dup_tok(struct parser *p);
 
+static const int sep = '/';
+
 #define MAX_INDENT 32
 
 #define match(t) do {\
@@ -81,89 +95,213 @@ static int _tok_match(const char *str, const char *b, const char *e)
 /*
  * public interface
  */
-struct config_file *create_config_file(void)
+struct config_tree *create_config_tree(const char *filename)
 {
 	struct cs *c;
-	struct pool *mem = pool_create(10 * 1024);
+	struct dm_pool *mem = dm_pool_create("config", 10 * 1024);
 
 	if (!mem) {
 		stack;
 		return 0;
 	}
 
-	if (!(c = pool_alloc(mem, sizeof(*c)))) {
+	if (!(c = dm_pool_zalloc(mem, sizeof(*c)))) {
 		stack;
-		pool_destroy(mem);
+		dm_pool_destroy(mem);
 		return 0;
 	}
 
 	c->mem = mem;
-	c->cf.root = (struct config_node *) NULL;
-	return &c->cf;
+	c->cft.root = (struct config_node *) NULL;
+	c->timestamp = 0;
+	c->exists = 0;
+	if (filename)
+		c->filename = dm_pool_strdup(c->mem, filename);
+	return &c->cft;
 }
 
-void destroy_config_file(struct config_file *cf)
+void destroy_config_tree(struct config_tree *cft)
 {
-	pool_destroy(((struct cs *) cf)->mem);
+	dm_pool_destroy(((struct cs *) cft)->mem);
 }
 
-int read_config(struct config_file *cf, const char *file)
+int read_config_fd(struct config_tree *cft, struct device *dev,
+		   off_t offset, size_t size, off_t offset2, size_t size2,
+		   checksum_fn_t checksum_fn, uint32_t checksum)
 {
-	struct cs *c = (struct cs *) cf;
+	struct cs *c = (struct cs *) cft;
 	struct parser *p;
-	struct stat info;
-	int r = 1, fd;
+	int r = 0;
+	int use_mmap = 1;
+	off_t mmap_offset = 0;
 
-	if (!(p = pool_alloc(c->mem, sizeof(*p)))) {
+	if (!(p = dm_pool_alloc(c->mem, sizeof(*p)))) {
 		stack;
 		return 0;
 	}
 	p->mem = c->mem;
 
-	/* memory map the file */
-	if (stat(file, &info) || S_ISDIR(info.st_mode)) {
-		log_sys_error("stat", file);
-		return 0;
+	/* Only use mmap with regular files */
+	if (!(dev->flags & DEV_REGULAR) || size2)
+		use_mmap = 0;
+
+	if (use_mmap) {
+		mmap_offset = offset % getpagesize();
+		/* memory map the file */
+		p->fb = mmap((caddr_t) 0, size + mmap_offset, PROT_READ,
+			     MAP_PRIVATE, dev_fd(dev), offset - mmap_offset);
+		if (p->fb == (caddr_t) (-1)) {
+			log_sys_error("mmap", dev_name(dev));
+			goto out;
+		}
+		p->fb = p->fb + mmap_offset;
+	} else {
+		if (!(p->fb = dm_malloc(size + size2))) {
+			stack;
+			return 0;
+		}
+		if (!dev_read(dev, (uint64_t) offset, size, p->fb)) {
+			log_error("Read from %s failed", dev_name(dev));
+			goto out;
+		}
+		if (size2) {
+			if (!dev_read(dev, (uint64_t) offset2, size2,
+				      p->fb + size)) {
+				log_error("Circular read from %s failed",
+					  dev_name(dev));
+				goto out;
+			}
+		}
 	}
 
-	if (info.st_size == 0) {
-		log_verbose("%s is empty", file);
-		return 1;
+	if (checksum_fn && checksum !=
+	    (checksum_fn(checksum_fn(INITIAL_CRC, p->fb, size),
+			 p->fb + size, size2))) {
+		log_error("%s: Checksum error", dev_name(dev));
+		goto out;
 	}
 
-	if ((fd = open(file, O_RDONLY)) < 0) {
-		log_sys_error("open", file);
-		return 0;
-	}
-
-	p->fb = mmap((caddr_t) 0, info.st_size, PROT_READ, MAP_PRIVATE, fd, 0);
-	if (p->fb == (caddr_t) (-1)) {
-		log_sys_error("mmap", file);
-		close(fd);
-		return 0;
-	}
-	p->fe = p->fb + info.st_size;
+	p->fe = p->fb + size + size2;
 
 	/* parse */
 	p->tb = p->te = p->fb;
 	p->line = 1;
-	_get_token(p);
-	if (!(cf->root = _file(p))) {
+	_get_token(p, TOK_SECTION_E);
+	if (!(cft->root = _file(p))) {
 		stack;
-		r = 0;
+		goto out;
 	}
 
-	/* unmap the file */
-	if (munmap((char *) p->fb, info.st_size)) {
-		log_sys_error("munmap", file);
-		r = 0;
+	r = 1;
+
+      out:
+	if (!use_mmap)
+		dm_free(p->fb);
+	else {
+		/* unmap the file */
+		if (munmap((char *) (p->fb - mmap_offset), size + mmap_offset)) {
+			log_sys_error("munmap", dev_name(dev));
+			r = 0;
+		}
 	}
 
-	close(fd);
 	return r;
 }
 
-static void _write_value(FILE * fp, struct config_value *v)
+int read_config_file(struct config_tree *cft)
+{
+	struct cs *c = (struct cs *) cft;
+	struct stat info;
+	struct device *dev;
+	int r = 1;
+
+	if (stat(c->filename, &info)) {
+		log_sys_error("stat", c->filename);
+		c->exists = 0;
+		return 0;
+	}
+
+	if (!S_ISREG(info.st_mode)) {
+		log_error("%s is not a regular file", c->filename);
+		c->exists = 0;
+		return 0;
+	}
+
+	c->exists = 1;
+
+	if (info.st_size == 0) {
+		log_verbose("%s is empty", c->filename);
+		return 1;
+	}
+
+	if (!(dev = dev_create_file(c->filename, NULL, NULL, 1))) {
+		stack;
+		return 0;
+	}
+
+	if (!dev_open_flags(dev, O_RDONLY, 0, 0)) {
+		stack;
+		return 0;
+	}
+
+	r = read_config_fd(cft, dev, 0, (size_t) info.st_size, 0, 0,
+			   (checksum_fn_t) NULL, 0);
+
+	dev_close(dev);
+
+	c->timestamp = info.st_mtime;
+
+	return r;
+}
+
+time_t config_file_timestamp(struct config_tree *cft)
+{
+	struct cs *c = (struct cs *) cft;
+
+	return c->timestamp;
+}
+
+/*
+ * Return 1 if config files ought to be reloaded
+ */
+int config_file_changed(struct config_tree *cft)
+{
+	struct cs *c = (struct cs *) cft;
+	struct stat info;
+
+	if (!c->filename)
+		return 0;
+
+	if (stat(c->filename, &info) == -1) {
+		/* Ignore a deleted config file: still use original data */
+		if (errno == ENOENT) {
+			if (!c->exists)
+				return 0;
+			log_very_verbose("Config file %s has disappeared!",
+					 c->filename);
+			goto reload;
+		}
+		log_sys_error("stat", c->filename);
+		log_error("Failed to reload configuration files");
+		return 0;
+	}
+
+	if (!S_ISREG(info.st_mode)) {
+		log_error("Configuration file %s is not a regular file",
+			  c->filename);
+		goto reload;
+	}
+
+	/* Unchanged? */
+	if (c->timestamp == info.st_mtime)
+		return 0;
+
+      reload:
+	log_verbose("Detected config file change to %s", c->filename);
+	return 1;
+}
+
+static void _write_value(FILE *fp, struct config_value *v)
 {
 	switch (v->type) {
 	case CFG_STRING:
@@ -177,10 +315,18 @@ static void _write_value(FILE * fp, struct config_value *v)
 	case CFG_INT:
 		fprintf(fp, "%d", v->v.i);
 		break;
+
+	case CFG_EMPTY_ARRAY:
+		fprintf(fp, "[]");
+		break;
+
+	default:
+		log_error("_write_value: Unknown value type: %d", v->type);
+
 	}
 }
 
-static int _write_config(struct config_node *n, FILE * fp, int level)
+static int _write_config(struct config_node *n, FILE *fp, int level)
 {
 	char space[MAX_INDENT + 1];
 	int l = (level < MAX_INDENT) ? level : MAX_INDENT;
@@ -190,7 +336,7 @@ static int _write_config(struct config_node *n, FILE * fp, int level)
 		return 1;
 
 	for (i = 0; i < l; i++)
-		space[i] = ' ';
+		space[i] = '\t';
 	space[i] = '\0';
 
 	while (n) {
@@ -223,20 +369,28 @@ static int _write_config(struct config_node *n, FILE * fp, int level)
 	return 1;
 }
 
-int write_config(struct config_file *cf, const char *file)
+int write_config_file(struct config_tree *cft, const char *file)
 {
 	int r = 1;
-	FILE *fp = fopen(file, "w");
-	if (!fp) {
+	FILE *fp;
+
+	if (!file) {
+		fp = stdout;
+		file = "stdout";
+	} else if (!(fp = fopen(file, "w"))) {
 		log_sys_error("open", file);
 		return 0;
 	}
 
-	if (!_write_config(cf->root, fp, 0)) {
-		stack;
+	log_verbose("Dumping configuration to %s", file);
+	if (!_write_config(cft->root, fp, 0)) {
+		log_error("Failure while writing configuration");
 		r = 0;
 	}
-	fclose(fp);
+
+	if (fp != stdout)
+		fclose(fp);
+
 	return r;
 }
 
@@ -306,7 +460,7 @@ static struct config_node *_section(struct parser *p)
 static struct config_value *_value(struct parser *p)
 {
 	/* '[' TYPE* ']' | TYPE */
-	struct config_value *h = 0, *l, *ll = 0;
+	struct config_value *h = NULL, *l, *ll = NULL;
 	if (p->t == TOK_ARRAY_B) {
 		match(TOK_ARRAY_B);
 		while (p->t != TOK_ARRAY_E) {
@@ -325,6 +479,16 @@ static struct config_value *_value(struct parser *p)
 				match(TOK_COMMA);
 		}
 		match(TOK_ARRAY_E);
+		/*
+		 * Special case for an empty array.
+		 */
+		if (!h) {
+			if (!(h = _create_value(p)))
+				return NULL;
+
+			h->type = CFG_EMPTY_ARRAY;
+		}
+
 	} else
 		h = _type(p);
 
@@ -333,19 +497,22 @@ static struct config_value *_value(struct parser *p)
 
 static struct config_value *_type(struct parser *p)
 {
-	/* [0-9]+ | [0-9]*\.[0-9]* | ".*" */
+	/* [+-]{0,1}[0-9]+ | [0-9]*\.[0-9]* | ".*" */
 	struct config_value *v = _create_value(p);
 
+	if (!v)
+		return NULL;
+
 	switch (p->t) {
 	case TOK_INT:
 		v->type = CFG_INT;
-		v->v.i = strtol(p->tb, 0, 0);	/* FIXME: check error */
+		v->v.i = strtol(p->tb, NULL, 0);	/* FIXME: check error */
 		match(TOK_INT);
 		break;
 
 	case TOK_FLOAT:
 		v->type = CFG_FLOAT;
-		v->v.r = strtod(p->tb, 0);	/* FIXME: check error */
+		v->v.r = strtod(p->tb, NULL);	/* FIXME: check error */
 		match(TOK_FLOAT);
 		break;
 
@@ -373,22 +540,29 @@ static int _match_aux(struct parser *p, int t)
 	if (p->t != t)
 		return 0;
 
-	_get_token(p);
+	_get_token(p, t);
 	return 1;
 }
 
 /*
  * tokeniser
  */
-static void _get_token(struct parser *p)
+static void _get_token(struct parser *p, int tok_prev)
 {
+	int values_allowed = 0;
+
 	p->tb = p->te;
 	_eat_space(p);
-	if (p->tb == p->fe) {
+	if (p->tb == p->fe || !*p->tb) {
 		p->t = TOK_EOF;
 		return;
 	}
 
+	/* Should next token be interpreted as value instead of identifier? */
+	if (tok_prev == TOK_EQ || tok_prev == TOK_ARRAY_B ||
+	    tok_prev == TOK_COMMA)
+		values_allowed = 1;
+
 	p->t = TOK_INT;		/* fudge so the fall through for
 				   floats works */
 	switch (*p->te) {
@@ -425,13 +599,24 @@ static void _get_token(struct parser *p)
 	case '"':
 		p->t = TOK_STRING;
 		p->te++;
-		while ((p->te != p->fe) && (*p->te != '"')) {
-			if ((*p->te == '\\') && (p->te + 1 != p->fe))
+		while ((p->te != p->fe) && (*p->te) && (*p->te != '"')) {
+			if ((*p->te == '\\') && (p->te + 1 != p->fe) &&
+			    *(p->te + 1))
 				p->te++;
 			p->te++;
 		}
 
-		if (p->te != p->fe)
+		if ((p->te != p->fe) && (*p->te))
+			p->te++;
+		break;
+
+	case '\'':
+		p->t = TOK_STRING;
+		p->te++;
+		while ((p->te != p->fe) && (*p->te) && (*p->te != '\''))
+			p->te++;
+
+		if ((p->te != p->fe) && (*p->te))
 			p->te++;
 		break;
 
@@ -447,22 +632,27 @@ static void _get_token(struct parser *p)
 	case '7':
 	case '8':
 	case '9':
-		p->te++;
-		while (p->te != p->fe) {
-			if (*p->te == '.') {
-				if (p->t == TOK_FLOAT)
-					break;
-				p->t = TOK_FLOAT;
-			} else if (!isdigit((int) *p->te))
-				break;
+	case '+':
+	case '-':
+		if (values_allowed) {
 			p->te++;
+			while ((p->te != p->fe) && (*p->te)) {
+				if (*p->te == '.') {
+					if (p->t == TOK_FLOAT)
+						break;
+					p->t = TOK_FLOAT;
+				} else if (!isdigit((int) *p->te))
+					break;
+				p->te++;
+			}
+			break;
 		}
-		break;
 
 	default:
 		p->t = TOK_IDENTIFIER;
-		while ((p->te != p->fe) && !isspace(*p->te) &&
-		       (*p->te != '#') && (*p->te != '='))
+		while ((p->te != p->fe) && (*p->te) && !isspace(*p->te) &&
+		       (*p->te != '#') && (*p->te != '=') && (*p->te != '{') &&
+		       (*p->te != '}'))
 			p->te++;
 		break;
 	}
@@ -470,15 +660,15 @@ static void _get_token(struct parser *p)
 
 static void _eat_space(struct parser *p)
 {
-	while (p->tb != p->fe) {
+	while ((p->tb != p->fe) && (*p->tb)) {
 		if (*p->te == '#') {
-			while ((p->te != p->fe) && (*p->te != '\n'))
+			while ((p->te != p->fe) && (*p->te) && (*p->te != '\n'))
 				p->te++;
 			p->line++;
 		}
 
 		else if (isspace(*p->te)) {
-			while ((p->te != p->fe) && isspace(*p->te)) {
+			while ((p->te != p->fe) && (*p->te) && isspace(*p->te)) {
 				if (*p->te == '\n')
 					p->line++;
 				p->te++;
@@ -497,22 +687,22 @@ static void _eat_space(struct parser *p)
  */
 static struct config_value *_create_value(struct parser *p)
 {
-	struct config_value *v = pool_alloc(p->mem, sizeof(*v));
+	struct config_value *v = dm_pool_alloc(p->mem, sizeof(*v));
 	memset(v, 0, sizeof(*v));
 	return v;
 }
 
 static struct config_node *_create_node(struct parser *p)
 {
-	struct config_node *n = pool_alloc(p->mem, sizeof(*n));
+	struct config_node *n = dm_pool_alloc(p->mem, sizeof(*n));
 	memset(n, 0, sizeof(*n));
 	return n;
 }
 
 static char *_dup_tok(struct parser *p)
 {
-	int len = p->te - p->tb;
-	char *str = pool_alloc(p->mem, len + 1);
+	size_t len = p->te - p->tb;
+	char *str = dm_pool_alloc(p->mem, len + 1);
 	if (!str) {
 		stack;
 		return 0;
@@ -525,8 +715,8 @@ static char *_dup_tok(struct parser *p)
 /*
  * utility functions
  */
-struct config_node *find_config_node(struct config_node *cn,
-				     const char *path, char sep)
+struct config_node *find_config_node(const struct config_node *cn,
+				     const char *path)
 {
 	const char *e;
 
@@ -554,13 +744,13 @@ struct config_node *find_config_node(struct config_node *cn,
 		path = e;
 	}
 
-	return cn;
+	return (struct config_node *) cn;
 }
 
-const char *find_config_str(struct config_node *cn,
-			    const char *path, char sep, const char *fail)
+const char *find_config_str(const struct config_node *cn,
+			    const char *path, const char *fail)
 {
-	struct config_node *n = find_config_node(cn, path, sep);
+	const struct config_node *n = find_config_node(cn, path);
 
 	if (n && n->v->type == CFG_STRING) {
 		if (*n->v->v.str)
@@ -574,10 +764,9 @@ const char *find_config_str(struct config_node *cn,
 	return fail;
 }
 
-int find_config_int(struct config_node *cn, const char *path,
-		    char sep, int fail)
+int find_config_int(const struct config_node *cn, const char *path, int fail)
 {
-	struct config_node *n = find_config_node(cn, path, sep);
+	const struct config_node *n = find_config_node(cn, path);
 
 	if (n && n->v->type == CFG_INT) {
 		log_very_verbose("Setting %s to %d", path, n->v->v.i);
@@ -589,10 +778,10 @@ int find_config_int(struct config_node *cn, const char *path,
 	return fail;
 }
 
-float find_config_float(struct config_node *cn, const char *path,
-			char sep, float fail)
+float find_config_float(const struct config_node *cn, const char *path,
+			float fail)
 {
-	struct config_node *n = find_config_node(cn, path, sep);
+	const struct config_node *n = find_config_node(cn, path);
 
 	if (n && n->v->type == CFG_FLOAT) {
 		log_very_verbose("Setting %s to %f", path, n->v->v.r);
@@ -632,10 +821,9 @@ static int _str_to_bool(const char *str, int fail)
 	return fail;
 }
 
-int find_config_bool(struct config_node *cn, const char *path,
-		     char sep, int fail)
+int find_config_bool(const struct config_node *cn, const char *path, int fail)
 {
-	struct config_node *n = find_config_node(cn, path, sep);
+	const struct config_node *n = find_config_node(cn, path);
 	struct config_value *v;
 
 	if (!n)
@@ -654,12 +842,12 @@ int find_config_bool(struct config_node *cn, const char *path,
 	return fail;
 }
 
-int get_config_uint32(struct config_node *cn, const char *path,
-		      char sep, uint32_t * result)
+int get_config_uint32(const struct config_node *cn, const char *path,
+		      uint32_t *result)
 {
-	struct config_node *n;
+	const struct config_node *n;
 
-	n = find_config_node(cn, path, sep);
+	n = find_config_node(cn, path);
 
 	if (!n || !n->v || n->v->type != CFG_INT)
 		return 0;
@@ -668,12 +856,12 @@ int get_config_uint32(struct config_node *cn, const char *path,
 	return 1;
 }
 
-int get_config_uint64(struct config_node *cn, const char *path,
-		      char sep, uint64_t * result)
+int get_config_uint64(const struct config_node *cn, const char *path,
+		      uint64_t *result)
 {
-	struct config_node *n;
+	const struct config_node *n;
 
-	n = find_config_node(cn, path, sep);
+	n = find_config_node(cn, path);
 
 	if (!n || !n->v || n->v->type != CFG_INT)
 		return 0;
@@ -682,3 +870,129 @@ int get_config_uint64(struct config_node *cn, const char *path,
 	*result = (uint64_t) n->v->v.i;
 	return 1;
 }
+
+int get_config_str(const struct config_node *cn, const char *path,
+		   char **result)
+{
+	const struct config_node *n;
+
+	n = find_config_node(cn, path);
+
+	if (!n || !n->v || n->v->type != CFG_STRING)
+		return 0;
+
+	*result = n->v->v.str;
+	return 1;
+}
+
+/* Insert cn2 after cn1 */
+static void _insert_config_node(struct config_node **cn1,
+				struct config_node *cn2)
+{
+	if (!*cn1) {
+		*cn1 = cn2;
+		cn2->sib = NULL;
+	} else {
+		cn2->sib = (*cn1)->sib;
+		(*cn1)->sib = cn2;
+	}
+}
+
+/*
+ * Merge section cn2 into section cn1 (which has the same name)
+ * overwriting any existing cn1 nodes with matching names.
+ */
+static void _merge_section(struct config_node *cn1, struct config_node *cn2)
+{
+	struct config_node *cn, *nextn, *oldn;
+	struct config_value *cv;
+
+	for (cn = cn2->child; cn; cn = nextn) {
+		nextn = cn->sib;
+
+		/* Skip "tags" */
+		if (!strcmp(cn->key, "tags"))
+			continue;
+
+		/* Subsection? */
+		if (!cn->v)
+			/* Ignore - we don't have any of these yet */
+			continue;
+		/* Not already present? */
+		if (!(oldn = find_config_node(cn1->child, cn->key))) {
+			_insert_config_node(&cn1->child, cn);
+			continue;
+		}
+		/* Merge certain value lists */
+		if ((!strcmp(cn1->key, "activation") &&
+		     !strcmp(cn->key, "volume_list")) ||
+		    (!strcmp(cn1->key, "devices") &&
+		     (!strcmp(cn->key, "filter") || !strcmp(cn->key, "types")))) {
+			cv = cn->v;
+			while (cv->next)
+				cv = cv->next;
+			cv->next = oldn->v;
+		}
+
+		/* Replace values */
+		oldn->v = cn->v;
+	}
+}
+
+static int _match_host_tags(struct list *tags, struct config_node *tn)
+{
+	struct config_value *tv;
+	const char *str;
+
+	for (tv = tn->v; tv; tv = tv->next) {
+		if (tv->type != CFG_STRING)
+			continue;
+		str = tv->v.str;
+		if (*str == '@')
+			str++;
+		if (!*str)
+			continue;
+		if (str_list_match_item(tags, str))
+			return 1;
+	}
+
+	return 0;
+}
+
+/* Destructively merge a new config tree into an existing one */
+int merge_config_tree(struct cmd_context *cmd, struct config_tree *cft,
+		      struct config_tree *newdata)
+{
+	struct config_node *root = cft->root;
+	struct config_node *cn, *nextn, *oldn, *tn, *cn2;
+
+	for (cn = newdata->root; cn; cn = nextn) {
+		nextn = cn->sib;
+		/* Ignore tags section */
+		if (!strcmp(cn->key, "tags"))
+			continue;
+		/* If there's a tags node, skip if host tags don't match */
+		if ((tn = find_config_node(cn->child, "tags"))) {
+			if (!_match_host_tags(&cmd->tags, tn))
+				continue;
+		}
+		if (!(oldn = find_config_node(root, cn->key))) {
+			_insert_config_node(&cft->root, cn);
+			/* Remove any "tags" nodes */
+			for (cn2 = cn->child; cn2; cn2 = cn2->sib) {
+				if (!strcmp(cn2->key, "tags")) {
+					cn->child = cn2->sib;
+					continue;
+				}
+				if (cn2->sib && !strcmp(cn2->sib->key, "tags")) {
+					cn2->sib = cn2->sib->sib;
+					continue;
+				}
+			}
+			continue;
+		}
+		_merge_section(oldn, cn);
+	}
+
+	return 1;
+}

lib/config/config.h

@@ -1,72 +1,98 @@
 /*
- * Copyright (C) 2001 Sistina Software (UK) Limited.
+ * Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.  
+ * Copyright (C) 2004 Red Hat, Inc. All rights reserved.
  *
- * This file is released under the LGPL.
+ * This file is part of LVM2.
+ *
+ * This copyrighted material is made available to anyone wishing to use,
+ * modify, copy, or redistribute it subject to the terms and conditions
+ * of the GNU General Public License v.2.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
 
 #ifndef _LVM_CONFIG_H
 #define _LVM_CONFIG_H
 
-#include <inttypes.h>
+#include "lvm-types.h"
+
+struct device;
+struct cmd_context;
 
 enum {
-        CFG_STRING,
-        CFG_FLOAT,
-        CFG_INT,
+	CFG_STRING,
+	CFG_FLOAT,
+	CFG_INT,
+	CFG_EMPTY_ARRAY
 };
 
 struct config_value {
-        int type;
-        union {
-                int i;
-                float r;
-                char *str;
-        } v;
-        struct config_value *next; /* for arrays */
+	int type;
+	union {
+		int i;
+		float r;
+		char *str;
+	} v;
+	struct config_value *next;	/* for arrays */
 };
 
 struct config_node {
-        char *key;
-        struct config_node *sib, *child;
-        struct config_value *v;
+	char *key;
+	struct config_node *sib, *child;
+	struct config_value *v;
 };
 
-struct config_file {
-        struct config_node *root;
+struct config_tree {
+	struct config_node *root;
 };
 
-struct config_file *create_config_file(void);
-void destroy_config_file(struct config_file *cf);
+struct config_tree_list {
+	struct list list;
+	struct config_tree *cft;
+};
 
-int read_config(struct config_file *cf, const char *file);
-int write_config(struct config_file *cf, const char *file);
+struct config_tree *create_config_tree(const char *filename);
+void destroy_config_tree(struct config_tree *cft);
 
-struct config_node *find_config_node(struct config_node *cn,
-				     const char *path, char seperator);
+typedef uint32_t (*checksum_fn_t) (uint32_t initial, void *buf, uint32_t size);
 
-const char *find_config_str(struct config_node *cn,
-			    const char *path, char sep, const char *fail);
+int read_config_fd(struct config_tree *cft, struct device *dev,
+		   off_t offset, size_t size, off_t offset2, size_t size2,
+		   checksum_fn_t checksum_fn, uint32_t checksum);
 
-int find_config_int(struct config_node *cn, const char *path,
-		    char sep, int fail);
+int read_config_file(struct config_tree *cft);
+int write_config_file(struct config_tree *cft, const char *file);
+time_t config_file_timestamp(struct config_tree *cft);
+int config_file_changed(struct config_tree *cft);
+int merge_config_tree(struct cmd_context *cmd, struct config_tree *cft,
+		      struct config_tree *newdata);
 
-float find_config_float(struct config_node *cn, const char *path,
-			char sep, float fail);
+struct config_node *find_config_node(const struct config_node *cn,
+				     const char *path);
+
+const char *find_config_str(const struct config_node *cn, const char *path,
+			    const char *fail);
+
+int find_config_int(const struct config_node *cn, const char *path, int fail);
+
+float find_config_float(const struct config_node *cn, const char *path,
+			float fail);
 
 /*
  * Understands (0, ~0), (y, n), (yes, no), (on,
  * off), (true, false).
  */
-int find_config_bool(struct config_node *cn, const char *path,
-		    char sep, int fail);
+int find_config_bool(const struct config_node *cn, const char *path, int fail);
 
+int get_config_uint32(const struct config_node *cn, const char *path,
+		      uint32_t *result);
 
+int get_config_uint64(const struct config_node *cn, const char *path,
+		      uint64_t *result);
 
-int get_config_uint32(struct config_node *cn, const char *path,
-		      char sep, uint32_t *result);
-
-int get_config_uint64(struct config_node *cn, const char *path,
-		      char sep, uint64_t *result);
+int get_config_str(const struct config_node *cn, const char *path,
+		   char **result);
 
 #endif
-

lib/config/defaults.h

@@ -1,15 +1,21 @@
 /*
- * Copyright (C) 2001 Sistina Software (UK) Limited.
+ * Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.  
+ * Copyright (C) 2004 Red Hat, Inc. All rights reserved.
  *
- * This file is released under the GPL.
+ * This file is part of LVM2.
+ *
+ * This copyrighted material is made available to anyone wishing to use,
+ * modify, copy, or redistribute it subject to the terms and conditions
+ * of the GNU General Public License v.2.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
 
 #ifndef _LVM_DEFAULTS_H
 #define _LVM_DEFAULTS_H
 
-
-#define DEFAULT_SYS_DIR "/etc/lvm"
-
 #define DEFAULT_ARCHIVE_ENABLED 1
 #define DEFAULT_BACKUP_ENABLED 1
 
@@ -19,22 +25,90 @@
 #define DEFAULT_ARCHIVE_DAYS 30
 #define DEFAULT_ARCHIVE_NUMBER 10
 
+#define DEFAULT_SYS_DIR "/etc/lvm"
 #define DEFAULT_DEV_DIR "/dev"
 #define DEFAULT_PROC_DIR "/proc"
+#define DEFAULT_SYSFS_SCAN 1
+#define DEFAULT_MD_COMPONENT_DETECTION 1
 
 #define DEFAULT_LOCK_DIR "/var/lock/lvm"
+#define DEFAULT_LOCKING_LIB "lvm2_locking.so"
+
+#define DEFAULT_DMEVENTD_MIRROR_LIB "libdevmapper-event-lvm2mirror.so"
 
 #define DEFAULT_UMASK 0077
 
-#define DEFAULT_FORMAT "lvm1"
-
-#define DEFAULT_MSG_PREFIX "  "
-
-#define DEFAULT_CMD_NAME 0
-
-#ifdef READLINE_SUPPORT
-  #define DEFAULT_MAX_HISTORY 100
+#ifdef LVM1_FALLBACK
+#  define DEFAULT_FALLBACK_TO_LVM1 1
+#else
+#  define DEFAULT_FALLBACK_TO_LVM1 0
 #endif
 
+#ifdef LVM1_SUPPORT
+#  define DEFAULT_FORMAT "lvm1"
+#else
+#  define DEFAULT_FORMAT "lvm2"
+#endif
 
-#endif /* _LVM_DEFAULTS_H */
+#define DEFAULT_STRIPESIZE 64	/* KB */
+#define DEFAULT_PVMETADATASIZE 255
+#define DEFAULT_PVMETADATACOPIES 1
+#define DEFAULT_LABELSECTOR UINT64_C(1)
+
+#define DEFAULT_MSG_PREFIX "  "
+#define DEFAULT_CMD_NAME 0
+#define DEFAULT_OVERWRITE 0
+
+#ifndef DEFAULT_LOG_FACILITY
+#  define DEFAULT_LOG_FACILITY LOG_USER
+#endif
+
+#define DEFAULT_SYSLOG 1
+#define DEFAULT_VERBOSE 0
+#define DEFAULT_LOGLEVEL 0
+#define DEFAULT_INDENT 1
+#define DEFAULT_UNITS "h"
+#define DEFAULT_SUFFIX 1
+#define DEFAULT_HOSTTAGS 0
+
+#ifdef DEVMAPPER_SUPPORT
+#  define DEFAULT_ACTIVATION 1
+#  define DEFAULT_RESERVED_MEMORY 8192
+#  define DEFAULT_RESERVED_STACK 256
+#  define DEFAULT_PROCESS_PRIORITY -18
+#else
+#  define DEFAULT_ACTIVATION 0
+#endif
+
+#define DEFAULT_STRIPE_FILLER "/dev/ioerror"
+#define DEFAULT_MIRROR_REGION_SIZE 512	/* KB */
+#define DEFAULT_INTERVAL 15
+
+#ifdef READLINE_SUPPORT
+#  define DEFAULT_MAX_HISTORY 100
+#endif
+
+#define DEFAULT_REP_ALIGNED 1
+#define DEFAULT_REP_BUFFERED 1
+#define DEFAULT_REP_HEADINGS 1
+#define DEFAULT_REP_SEPARATOR " "
+
+#define DEFAULT_LVS_COLS "lv_name,vg_name,lv_attr,lv_size,origin,snap_percent,move_pv,mirror_log,copy_percent"
+#define DEFAULT_VGS_COLS "vg_name,pv_count,lv_count,snap_count,vg_attr,vg_size,vg_free"
+#define DEFAULT_PVS_COLS "pv_name,vg_name,pv_fmt,pv_attr,pv_size,pv_free"
+#define DEFAULT_SEGS_COLS "lv_name,vg_name,lv_attr,stripes,segtype,seg_size"
+#define DEFAULT_PVSEGS_COLS "pv_name,vg_name,pv_fmt,pv_attr,pv_size,pv_free,pvseg_start,pvseg_size"
+
+#define DEFAULT_LVS_COLS_VERB "lv_name,vg_name,seg_count,lv_attr,lv_size,lv_major,lv_minor,lv_kernel_major,lv_kernel_minor,origin,snap_percent,move_pv,copy_percent,mirror_log,lv_uuid"
+#define DEFAULT_VGS_COLS_VERB "vg_name,vg_attr,vg_extent_size,pv_count,lv_count,snap_count,vg_size,vg_free,vg_uuid"
+#define DEFAULT_PVS_COLS_VERB "pv_name,vg_name,pv_fmt,pv_attr,pv_size,pv_free,dev_size,pv_uuid"
+#define DEFAULT_SEGS_COLS_VERB "lv_name,vg_name,lv_attr,seg_start,seg_size,stripes,segtype,stripesize,chunksize"
+#define DEFAULT_PVSEGS_COLS_VERB "pv_name,vg_name,pv_fmt,pv_attr,pv_size,pv_free,pvseg_start,pvseg_size"
+
+#define DEFAULT_LVS_SORT "vg_name,lv_name"
+#define DEFAULT_VGS_SORT "vg_name"
+#define DEFAULT_PVS_SORT "pv_name"
+#define DEFAULT_SEGS_SORT "vg_name,lv_name,seg_start"
+#define DEFAULT_PVSEGS_SORT "pv_name,pvseg_start"
+
+#endif				/* _LVM_DEFAULTS_H */

lib/datastruct/bitset.c

@@ -1,79 +0,0 @@
-/*
- * Copyright (C) 2001 Sistina Software (UK) Limited.
- *
- * This file is released under the LGPL.
- */
-
-#include "bitset.h"
-#include "dbg_malloc.h"
-
-#include <stdlib.h>
-
-/* FIXME: calculate this. */
-#define INT_SHIFT 5
-
-bitset_t bitset_create(struct pool * mem, unsigned num_bits)
-{
-	int n = (num_bits / BITS_PER_INT) + 2;
-	int size = sizeof(int) * n;
-	unsigned *bs = pool_zalloc(mem, size);
-
-	if (!bs)
-		return NULL;
-
-	*bs = num_bits;
-	return bs;
-}
-
-void bitset_destroy(bitset_t bs)
-{
-	dbg_free(bs);
-}
-
-void bit_union(bitset_t out, bitset_t in1, bitset_t in2)
-{
-	int i;
-	for (i = (in1[0] / BITS_PER_INT) + 1; i; i--)
-		out[i] = in1[i] | in2[i];
-}
-
-/*
- * FIXME: slow
- */
-static inline int _test_word(uint32_t test, int bit)
-{
-	while (bit < BITS_PER_INT) {
-		if (test & (0x1 << bit))
-			return bit;
-		bit++;
-	}
-
-	return -1;
-}
-
-int bit_get_next(bitset_t bs, int last_bit)
-{
-	int bit, word;
-	uint32_t test;
-
-	last_bit++;		/* otherwise we'll return the same bit again */
-
-	while (last_bit < bs[0]) {
-		word = last_bit >> INT_SHIFT;
-		test = bs[word + 1];
-		bit = last_bit & (BITS_PER_INT - 1);
-
-		if ((bit = _test_word(test, bit)) >= 0)
-			return (word * BITS_PER_INT) + bit;
-
-		last_bit = last_bit - (last_bit & (BITS_PER_INT - 1)) +
-		    BITS_PER_INT;
-	}
-
-	return -1;
-}
-
-int bit_get_first(bitset_t bs)
-{
-	return bit_get_next(bs, -1);
-}

lib/datastruct/btree.c

@@ -1,11 +1,20 @@
 /*
- * Copyright (C) 2001 Sistina Software (UK) Limited.
+ * Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.  
+ * Copyright (C) 2004 Red Hat, Inc. All rights reserved.
  *
- * This file is released under the LGPL.
+ * This file is part of LVM2.
+ *
+ * This copyrighted material is made available to anyone wishing to use,
+ * modify, copy, or redistribute it subject to the terms and conditions
+ * of the GNU General Public License v.2.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
 
+#include "lib.h"
 #include "btree.h"
-#include "log.h"
 
 struct node {
 	uint32_t key;
@@ -15,13 +24,13 @@ struct node {
 };
 
 struct btree {
-	struct pool *mem;
+	struct dm_pool *mem;
 	struct node *root;
 };
 
-struct btree *btree_create(struct pool *mem)
+struct btree *btree_create(struct dm_pool *mem)
 {
-	struct btree *t = pool_alloc(mem, sizeof(*t));
+	struct btree *t = dm_pool_alloc(mem, sizeof(*t));
 
 	if (t) {
 		t->mem = mem;
@@ -46,7 +55,7 @@ static uint32_t _shuffle(uint32_t k)
 #endif
 }
 
-struct node **_lookup(struct node **c, uint32_t key, struct node **p)
+static struct node **_lookup(struct node **c, uint32_t key, struct node **p)
 {
 	*p = NULL;
 	while (*c) {
@@ -77,7 +86,7 @@ int btree_insert(struct btree *t, uint32_t k, void *data)
 	struct node *p, **c = _lookup(&t->root, key, &p), *n;
 
 	if (!*c) {
-		if (!(n = pool_alloc(t->mem, sizeof(*n)))) {
+		if (!(n = dm_pool_alloc(t->mem, sizeof(*n)))) {
 			stack;
 			return 0;
 		}

lib/datastruct/btree.h

@@ -1,18 +1,24 @@
 /*
- * Copyright (C) 2001 Sistina Software (UK) Limited.
+ * Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.  
+ * Copyright (C) 2004 Red Hat, Inc. All rights reserved.
  *
- * This file is released under the GPL.
+ * This file is part of LVM2.
+ *
+ * This copyrighted material is made available to anyone wishing to use,
+ * modify, copy, or redistribute it subject to the terms and conditions
+ * of the GNU General Public License v.2.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
 
 #ifndef _LVM_BTREE_H
 #define _LVM_BTREE_H
 
-#include "lvm-types.h"
-#include "pool.h"
-
 struct btree;
 
-struct btree *btree_create(struct pool *mem);
+struct btree *btree_create(struct dm_pool *mem);
 
 void *btree_lookup(struct btree *t, uint32_t k);
 int btree_insert(struct btree *t, uint32_t k, void *data);

lib/datastruct/hash.c

@@ -1,232 +0,0 @@
-/*
- * Copyright (C) 2001 Sistina Software
- *
- * This file is released under the LGPL.
- */
-
-#include "dbg_malloc.h"
-#include "hash.h"
-#include "log.h"
-
-struct hash_node {
-	struct hash_node *next;
-	void *data;
-	char key[1];
-};
-
-struct hash_table {
-	int num_nodes;
-	int num_slots;
-	struct hash_node **slots;
-};
-
-/* Permutation of the Integers 0 through 255 */
-static unsigned char _nums[] = {
-	1, 14, 110, 25, 97, 174, 132, 119, 138, 170, 125, 118, 27, 233, 140, 51,
-	87, 197, 177, 107, 234, 169, 56, 68, 30, 7, 173, 73, 188, 40, 36, 65,
-	49, 213, 104, 190, 57, 211, 148, 223, 48, 115, 15, 2, 67, 186, 210, 28,
-	12, 181, 103, 70, 22, 58, 75, 78, 183, 167, 238, 157, 124, 147, 172,
-	    144,
-	176, 161, 141, 86, 60, 66, 128, 83, 156, 241, 79, 46, 168, 198, 41, 254,
-	178, 85, 253, 237, 250, 154, 133, 88, 35, 206, 95, 116, 252, 192, 54,
-	    221,
-	102, 218, 255, 240, 82, 106, 158, 201, 61, 3, 89, 9, 42, 155, 159, 93,
-	166, 80, 50, 34, 175, 195, 100, 99, 26, 150, 16, 145, 4, 33, 8, 189,
-	121, 64, 77, 72, 208, 245, 130, 122, 143, 55, 105, 134, 29, 164, 185,
-	    194,
-	193, 239, 101, 242, 5, 171, 126, 11, 74, 59, 137, 228, 108, 191, 232,
-	    139,
-	6, 24, 81, 20, 127, 17, 91, 92, 251, 151, 225, 207, 21, 98, 113, 112,
-	84, 226, 18, 214, 199, 187, 13, 32, 94, 220, 224, 212, 247, 204, 196,
-	    43,
-	249, 236, 45, 244, 111, 182, 153, 136, 129, 90, 217, 202, 19, 165, 231,
-	    71,
-	230, 142, 96, 227, 62, 179, 246, 114, 162, 53, 160, 215, 205, 180, 47,
-	    109,
-	44, 38, 31, 149, 135, 0, 216, 52, 63, 23, 37, 69, 39, 117, 146, 184,
-	163, 200, 222, 235, 248, 243, 219, 10, 152, 131, 123, 229, 203, 76, 120,
-	    209
-};
-
-static struct hash_node *_create_node(const char *str)
-{
-	/* remember sizeof(n) includes an extra char from key[1],
-	   so not adding 1 to the strlen as you would expect */
-	struct hash_node *n = dbg_malloc(sizeof(*n) + strlen(str));
-
-	if (n)
-		strcpy(n->key, str);
-
-	return n;
-}
-
-static unsigned _hash(const char *str)
-{
-	unsigned long int h = 0, g;
-	while (*str) {
-		h <<= 4;
-		h += _nums[(int) *str++];
-		g = h & ((unsigned long) 0xf << 16u);
-		if (g) {
-			h ^= g >> 16u;
-			h ^= g >> 5u;
-		}
-	}
-	return h;
-}
-
-struct hash_table *hash_create(unsigned size_hint)
-{
-	size_t len;
-	unsigned new_size = 16u;
-	struct hash_table *hc = dbg_malloc(sizeof(*hc));
-
-	if (!hc) {
-		stack;
-		return 0;
-	}
-
-	memset(hc, 0, sizeof(*hc));
-
-	/* round size hint up to a power of two */
-	while (new_size < size_hint)
-		new_size = new_size << 1;
-
-	hc->num_slots = new_size;
-	len = sizeof(*(hc->slots)) * new_size;
-	if (!(hc->slots = dbg_malloc(len))) {
-		stack;
-		goto bad;
-	}
-	memset(hc->slots, 0, len);
-	return hc;
-
-      bad:
-	dbg_free(hc->slots);
-	dbg_free(hc);
-	return 0;
-}
-
-static void _free_nodes(struct hash_table *t)
-{
-	struct hash_node *c, *n;
-	int i;
-
-	for (i = 0; i < t->num_slots; i++)
-		for (c = t->slots[i]; c; c = n) {
-			n = c->next;
-			dbg_free(c);
-		}
-}
-
-void hash_destroy(struct hash_table *t)
-{
-	_free_nodes(t);
-	dbg_free(t->slots);
-	dbg_free(t);
-}
-
-static inline struct hash_node **_find(struct hash_table *t, const char *key)
-{
-	unsigned h = _hash(key) & (t->num_slots - 1);
-	struct hash_node **c;
-
-	for (c = &t->slots[h]; *c; c = &((*c)->next))
-		if (!strcmp(key, (*c)->key))
-			break;
-
-	return c;
-}
-
-void *hash_lookup(struct hash_table *t, const char *key)
-{
-	struct hash_node **c = _find(t, key);
-	return *c ? (*c)->data : 0;
-}
-
-int hash_insert(struct hash_table *t, const char *key, void *data)
-{
-	struct hash_node **c = _find(t, key);
-
-	if (*c)
-		(*c)->data = data;
-	else {
-		struct hash_node *n = _create_node(key);
-
-		if (!n)
-			return 0;
-
-		n->data = data;
-		n->next = 0;
-		*c = n;
-		t->num_nodes++;
-	}
-
-	return 1;
-}
-
-void hash_remove(struct hash_table *t, const char *key)
-{
-	struct hash_node **c = _find(t, key);
-
-	if (*c) {
-		struct hash_node *old = *c;
-		*c = (*c)->next;
-		dbg_free(old);
-		t->num_nodes--;
-	}
-}
-
-unsigned hash_get_num_entries(struct hash_table *t)
-{
-	return t->num_nodes;
-}
-
-void hash_iter(struct hash_table *t, iterate_fn f)
-{
-	struct hash_node *c;
-	int i;
-
-	for (i = 0; i < t->num_slots; i++)
-		for (c = t->slots[i]; c; c = c->next)
-			f(c->data);
-}
-
-void hash_wipe(struct hash_table *t)
-{
-	_free_nodes(t);
-	memset(t->slots, 0, sizeof(struct hash_node *) * t->num_slots);
-	t->num_nodes = 0;
-}
-
-char *hash_get_key(struct hash_table *t, struct hash_node *n)
-{
-	return n->key;
-}
-
-void *hash_get_data(struct hash_table *t, struct hash_node *n)
-{
-	return n->data;
-}
-
-static struct hash_node *_next_slot(struct hash_table *t, unsigned int s)
-{
-	struct hash_node *c = NULL;
-	int i;
-
-	for (i = s; i < t->num_slots && !c; i++)
-		c = t->slots[i];
-
-	return c;
-}
-
-struct hash_node *hash_get_first(struct hash_table *t)
-{
-	return _next_slot(t, 0);
-}
-
-struct hash_node *hash_get_next(struct hash_table *t, struct hash_node *n)
-{
-	unsigned int h = _hash(n->key) & (t->num_slots - 1);
-	return n->next ? n->next : _next_slot(t, h + 1);
-}

lib/datastruct/hash.h

@@ -1,36 +0,0 @@
-/*
- * Copyright (C) 2001 Sistina Software
- *
- * This file is released under the GPL.
- */
-
-#ifndef _LVM_HASH_H
-#define _LVM_HASH_H
-
-struct hash_table;
-struct hash_node;
-
-typedef void (*iterate_fn)(void *data);
-
-struct hash_table *hash_create(unsigned size_hint);
-void hash_destroy(struct hash_table *t);
-void hash_wipe(struct hash_table *t);
-
-void *hash_lookup(struct hash_table *t, const char *key);
-int hash_insert(struct hash_table *t, const char *key, void *data);
-void hash_remove(struct hash_table *t, const char *key);
-
-unsigned hash_get_num_entries(struct hash_table *t);
-void hash_iter(struct hash_table *t, iterate_fn f);
-
-char *hash_get_key(struct hash_table *t, struct hash_node *n);
-void *hash_get_data(struct hash_table *t, struct hash_node *n);
-struct hash_node *hash_get_first(struct hash_table *t);
-struct hash_node *hash_get_next(struct hash_table *t, struct hash_node *n);
-
-#define hash_iterate(v, h) \
-	for (v = hash_get_first(h); v; \
-	     v = hash_get_next(h, v))
-
-#endif
-

lib/datastruct/list.h

@@ -1,7 +1,16 @@
 /*
- * Copyright (C) 2001 Sistina Software
+ * Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.
+ * Copyright (C) 2004 Red Hat, Inc. All rights reserved.
  *
- * This file is released under the LGPL.
+ * This file is part of LVM2.
+ *
+ * This copyrighted material is made available to anyone wishing to use,
+ * modify, copy, or redistribute it subject to the terms and conditions
+ * of the GNU General Public License v.2.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
 
 #ifndef _LVM_LIST_H
@@ -9,15 +18,32 @@
 
 #include <assert.h>
 
+/*
+ * A list consists of a list head plus elements.
+ * Each element has 'next' and 'previous' pointers.
+ * The list head's pointers point to the first and the last element.
+ */
+
 struct list {
 	struct list *n, *p;
 };
 
-static inline void list_init(struct list *head) {
+/*
+ * Initialise a list before use.
+ * The list head's next and previous pointers point back to itself.
+ */
+#define LIST_INIT(name)	struct list name = { &(name), &(name) }
+static inline void list_init(struct list *head)
+{
 	head->n = head->p = head;
 }
 
-static inline void list_add(struct list *head, struct list *elem) {
+/*
+ * Insert an element before 'head'.
+ * If 'head' is the list head, this adds an element to the end of the list.
+ */
+static inline void list_add(struct list *head, struct list *elem)
+{
 	assert(head->n);
 
 	elem->n = head;
@@ -27,7 +53,12 @@ static inline void list_add(struct list *head, struct list *elem) {
 	head->p = elem;
 }
 
-static inline void list_add_h(struct list *head, struct list *elem) {
+/*
+ * Insert an element after 'head'.
+ * If 'head' is the list head, this adds an element to the front of the list.
+ */
+static inline void list_add_h(struct list *head, struct list *elem)
+{
 	assert(head->n);
 
 	elem->n = head->n;
@@ -37,36 +68,191 @@ static inline void list_add_h(struct list *head, struct list *elem) {
 	head->n = elem;
 }
 
-static inline void list_del(struct list *elem) {
+/*
+ * Delete an element from its list.
+ * Note that this doesn't change the element itself - it may still be safe
+ * to follow its pointers.
+ */
+static inline void list_del(struct list *elem)
+{
 	elem->n->p = elem->p;
 	elem->p->n = elem->n;
 }
 
-static inline int list_empty(struct list *head) {
+/*
+ * Is the list empty?
+ */
+static inline int list_empty(struct list *head)
+{
 	return head->n == head;
 }
 
+/*
+ * Is this the first element of the list?
+ */
+static inline int list_start(struct list *head, struct list *elem)
+{
+	return elem->p == head;
+}
+
+/*
+ * Is this the last element of the list?
+ */
+static inline int list_end(struct list *head, struct list *elem)
+{
+	return elem->n == head;
+}
+
+/*
+ * Return first element of the list or NULL if empty
+ */
+static inline struct list *list_first(struct list *head)
+{
+	return (list_empty(head) ? NULL : head->n);
+}
+
+/*
+ * Return last element of the list or NULL if empty
+ */
+static inline struct list *list_last(struct list *head)
+{
+	return (list_empty(head) ? NULL : head->p);
+}
+
+/*
+ * Return the previous element of the list, or NULL if we've reached the start.
+ */
+static inline struct list *list_prev(struct list *head, struct list *elem)
+{
+	return (list_start(head, elem) ? NULL : elem->p);
+}
+
+/*
+ * Return the next element of the list, or NULL if we've reached the end.
+ */
+static inline struct list *list_next(struct list *head, struct list *elem)
+{
+	return (list_end(head, elem) ? NULL : elem->n);
+}
+
+/*
+ * Given the address v of an instance of 'struct list' called 'head' 
+ * contained in a structure of type t, return the containing structure.
+ */
+#define list_struct_base(v, t, head) \
+    ((t *)((uintptr_t)(v) - (uintptr_t)&((t *) 0)->head))
+
+/*
+ * Given the address v of an instance of 'struct list list' contained in
+ * a structure of type t, return the containing structure.
+ */
+#define list_item(v, t) list_struct_base((v), t, list)
+
+/*
+ * Given the address v of one known element e in a known structure of type t,
+ * return another element f.
+ */
+#define struct_field(v, t, e, f) \
+    (((t *)((uintptr_t)(v) - (uintptr_t)&((t *) 0)->e))->f)
+
+/*
+ * Given the address v of a known element e in a known structure of type t,
+ * return the list head 'list'
+ */
+#define list_head(v, t, e) struct_field(v, t, e, list)
+
+/*
+ * Set v to each element of a list in turn.
+ */
 #define list_iterate(v, head) \
 	for (v = (head)->n; v != head; v = v->n)
 
+/*
+ * Set v to each element in a list in turn, starting from the element 
+ * in front of 'start'.
+ * You can use this to 'unwind' a list_iterate and back out actions on
+ * already-processed elements.
+ * If 'start' is 'head' it walks the list backwards.
+ */
+#define list_uniterate(v, head, start) \
+	for (v = (start)->p; v != head; v = v->p)
+
+/*
+ * A safe way to walk a list and delete and free some elements along
+ * the way.
+ * t must be defined as a temporary variable of the same type as v.
+ */
 #define list_iterate_safe(v, t, head) \
 	for (v = (head)->n, t = v->n; v != head; v = t, t = v->n)
 
-static inline int list_size(struct list *head) {
-	int s = 0;
-	struct list *v;
+/*
+ * Walk a list, setting 'v' in turn to the containing structure of each item.
+ * The containing structure should be the same type as 'v'.
+ * The 'struct list' variable within the containing structure is 'field'.
+ */
+#define list_iterate_items_gen(v, head, field) \
+	for (v = list_struct_base((head)->n, typeof(*v), field); \
+	     &v->field != (head); \
+	     v = list_struct_base(v->field.n, typeof(*v), field))
+
+/*
+ * Walk a list, setting 'v' in turn to the containing structure of each item.
+ * The containing structure should be the same type as 'v'.
+ * The list should be 'struct list list' within the containing structure.
+ */
+#define list_iterate_items(v, head) list_iterate_items_gen(v, (head), list)
+
+/*
+ * Walk a list, setting 'v' in turn to the containing structure of each item.
+ * The containing structure should be the same type as 'v'.
+ * The 'struct list' variable within the containing structure is 'field'.
+ * t must be defined as a temporary variable of the same type as v.
+ */
+#define list_iterate_items_gen_safe(v, t, head, field) \
+	for (v = list_struct_base((head)->n, typeof(*v), field), \
+	     t = list_struct_base(v->field.n, typeof(*v), field); \
+	     &v->field != (head); \
+	     v = t, t = list_struct_base(v->field.n, typeof(*v), field))
+/*
+ * Walk a list, setting 'v' in turn to the containing structure of each item.
+ * The containing structure should be the same type as 'v'.
+ * The list should be 'struct list list' within the containing structure.
+ * t must be defined as a temporary variable of the same type as v.
+ */
+#define list_iterate_items_safe(v, t, head) \
+	list_iterate_items_gen_safe(v, t, (head), list)
+
+/*
+ * Walk a list backwards, setting 'v' in turn to the containing structure 
+ * of each item.
+ * The containing structure should be the same type as 'v'.
+ * The 'struct list' variable within the containing structure is 'field'.
+ */
+#define list_iterate_back_items_gen(v, head, field) \
+	for (v = list_struct_base((head)->p, typeof(*v), field); \
+	     &v->field != (head); \
+	     v = list_struct_base(v->field.p, typeof(*v), field))
+
+/*
+ * Walk a list backwards, setting 'v' in turn to the containing structure 
+ * of each item.
+ * The containing structure should be the same type as 'v'.
+ * The list should be 'struct list list' within the containing structure.
+ */
+#define list_iterate_back_items(v, head) list_iterate_back_items_gen(v, (head), list)
+
+/*
+ * Return the number of elements in a list by walking it.
+ */
+static inline unsigned int list_size(const struct list *head)
+{
+	unsigned int s = 0;
+	const struct list *v;
 
 	list_iterate(v, head)
-		s++;
+	    s++;
 
 	return s;
 }
 
-#define list_item(v, t) \
-    ((t *)((uintptr_t)(v) - (uintptr_t)&((t *) 0)->list))
-
-/* Given a known element in a known structure, locate the struct list */
-#define list_head(v, t, e) \
-    (((t *)((uintptr_t)(v) - (uintptr_t)&((t *) 0)->e))->list)
-
 #endif

lib/datastruct/lvm-types.h

@@ -1,7 +1,16 @@
 /*
- * Copyright (C) 2001 Sistina Software (UK) Limited.
+ * Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.  
+ * Copyright (C) 2004 Red Hat, Inc. All rights reserved.
  *
- * This file is released under the GPL.
+ * This file is part of LVM2.
+ *
+ * This copyrighted material is made available to anyone wishing to use,
+ * modify, copy, or redistribute it subject to the terms and conditions
+ * of the GNU General Public License v.2.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
 
 #ifndef _LVM_TYPES_H
@@ -12,9 +21,12 @@
 #include <sys/types.h>
 #include <inttypes.h>
 
+/* Define some portable printing types */
+#define PRIsize_t "zu"
+
 struct str_list {
 	struct list list;
-	char *str;
+	const char *str;
 };
 
 #endif

lib/datastruct/str_list.c

@@ -0,0 +1,128 @@
+/*
+ * Copyright (C) 2003-2004 Sistina Software, Inc. All rights reserved.
+ * Copyright (C) 2004 Red Hat, Inc. All rights reserved.
+ *
+ * This file is part of LVM2.
+ *
+ * This copyrighted material is made available to anyone wishing to use,
+ * modify, copy, or redistribute it subject to the terms and conditions
+ * of the GNU General Public License v.2.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#include "lib.h"
+#include "str_list.h"
+
+struct list *str_list_create(struct dm_pool *mem)
+{
+	struct list *sl;
+
+	if (!(sl = dm_pool_alloc(mem, sizeof(struct list)))) {
+		stack;
+		return NULL;
+	}
+
+	list_init(sl);
+
+	return sl;
+}
+
+int str_list_add(struct dm_pool *mem, struct list *sll, const char *str)
+{
+	struct str_list *sln;
+
+	if (!str) {
+		stack;
+		return 0;
+	}
+
+	/* Already in list? */
+	if (str_list_match_item(sll, str))
+		return 1;
+
+	if (!(sln = dm_pool_alloc(mem, sizeof(*sln)))) {
+		stack;
+		return 0;
+	}
+
+	sln->str = str;
+	list_add(sll, &sln->list);
+
+	return 1;
+}
+
+int str_list_del(struct list *sll, const char *str)
+{
+	struct list *slh, *slht;
+
+	list_iterate_safe(slh, slht, sll) {
+		if (!strcmp(str, list_item(slh, struct str_list)->str))
+			 list_del(slh);
+	}
+
+	return 1;
+}
+
+int str_list_dup(struct dm_pool *mem, struct list *sllnew, struct list *sllold)
+{
+	struct str_list *sl;
+
+	list_init(sllnew);
+
+	list_iterate_items(sl, sllold) {
+		if (!str_list_add(mem, sllnew, strdup(sl->str))) {
+			stack;
+			return 0;
+		}
+	}
+
+	return 1;
+}
+
+/*
+ * Is item on list?
+ */
+int str_list_match_item(struct list *sll, const char *str)
+{
+	struct str_list *sl;
+
+	list_iterate_items(sl, sll)
+	    if (!strcmp(str, sl->str))
+		return 1;
+
+	return 0;
+}
+
+/*
+ * Is at least one item on both lists?
+ */
+int str_list_match_list(struct list *sll, struct list *sll2)
+{
+	struct str_list *sl;
+
+	list_iterate_items(sl, sll)
+	    if (str_list_match_item(sll2, sl->str))
+		return 1;
+
+	return 0;
+}
+
+/*
+ * Do both lists contain the same set of items?
+ */
+int str_list_lists_equal(struct list *sll, struct list *sll2)
+{
+	struct str_list *sl;
+
+	if (list_size(sll) != list_size(sll2))
+		return 0;
+
+	list_iterate_items(sl, sll)
+	    if (!str_list_match_item(sll2, sl->str))
+		return 0;
+
+	return 1;
+}

lib/datastruct/str_list.h

@@ -0,0 +1,27 @@
+/*
+ * Copyright (C) 2003-2004 Sistina Software, Inc. All rights reserved.  
+ * Copyright (C) 2004 Red Hat, Inc. All rights reserved.
+ *
+ * This file is part of LVM2.
+ *
+ * This copyrighted material is made available to anyone wishing to use,
+ * modify, copy, or redistribute it subject to the terms and conditions
+ * of the GNU General Public License v.2.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#ifndef _LVM_STR_LIST_H
+#define _LVM_STR_LIST_H
+
+struct list *str_list_create(struct dm_pool *mem);
+int str_list_add(struct dm_pool *mem, struct list *sll, const char *str);
+int str_list_del(struct list *sll, const char *str);
+int str_list_match_item(struct list *sll, const char *str);
+int str_list_match_list(struct list *sll, struct list *sll2);
+int str_list_lists_equal(struct list *sll, struct list *sll2);
+int str_list_dup(struct dm_pool *mem, struct list *sllnew, struct list *sllold);
+
+#endif

lib/device/dev-cache.c

@@ -1,30 +1,28 @@
 /*
- * Copyright (C) 2001 Sistina Software (UK) Limited.
+ * Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.  
+ * Copyright (C) 2004 Red Hat, Inc. All rights reserved.
  *
- * This file is released under the LGPL.
+ * This file is part of LVM2.
+ *
+ * This copyrighted material is made available to anyone wishing to use,
+ * modify, copy, or redistribute it subject to the terms and conditions
+ * of the GNU General Public License v.2.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
 
+#include "lib.h"
 #include "dev-cache.h"
-#include "log.h"
-#include "pool.h"
-#include "hash.h"
-#include "list.h"
 #include "lvm-types.h"
 #include "btree.h"
-#include "dbg_malloc.h"
+#include "filter.h"
+#include "filter-persistent.h"
 
-#include <stdlib.h>
-#include <sys/types.h>
-#include <sys/stat.h>
 #include <unistd.h>
 #include <sys/param.h>
 #include <dirent.h>
-#include <linux/kdev_t.h>
-
-/*
- * FIXME: really need to seperate names from the devices since
- * multiple names can point to the same device.
- */
 
 struct dev_iter {
 	struct btree_iter *current;
@@ -37,50 +35,200 @@ struct dir_list {
 };
 
 static struct {
-	struct pool *mem;
-	struct hash_table *names;
+	struct dm_pool *mem;
+	struct dm_hash_table *names;
 	struct btree *devices;
 
 	int has_scanned;
 	struct list dirs;
+	struct list files;
 
 } _cache;
 
-#define _alloc(x) pool_alloc(_cache.mem, (x))
-#define _free(x) pool_free(_cache.mem, (x))
+#define _alloc(x) dm_pool_zalloc(_cache.mem, (x))
+#define _free(x) dm_pool_free(_cache.mem, (x))
+#define _strdup(x) dm_pool_strdup(_cache.mem, (x))
 
 static int _insert(const char *path, int rec);
 
-static struct device *_create_dev(dev_t d)
+struct device *dev_create_file(const char *filename, struct device *dev,
+			       struct str_list *alias, int use_malloc)
+{
+	int allocate = !dev;
+
+	if (allocate) {
+		if (use_malloc) {
+			if (!(dev = dm_malloc(sizeof(*dev)))) {
+				log_error("struct device allocation failed");
+				return NULL;
+			}
+			if (!(alias = dm_malloc(sizeof(*alias)))) {
+				log_error("struct str_list allocation failed");
+				dm_free(dev);
+				return NULL;
+			}
+			if (!(alias->str = dm_strdup(filename))) {
+				log_error("filename strdup failed");
+				dm_free(dev);
+				dm_free(alias);
+				return NULL;
+			}
+			dev->flags = DEV_ALLOCED;
+		} else {
+			if (!(dev = _alloc(sizeof(*dev)))) {
+				log_error("struct device allocation failed");
+				return NULL;
+			}
+			if (!(alias = _alloc(sizeof(*alias)))) {
+				log_error("struct str_list allocation failed");
+				_free(dev);
+				return NULL;
+			}
+			if (!(alias->str = _strdup(filename))) {
+				log_error("filename strdup failed");
+				return NULL;
+			}
+		}
+	} else if (!(alias->str = dm_strdup(filename))) {
+		log_error("filename strdup failed");
+		return NULL;
+	}
+
+	dev->flags |= DEV_REGULAR;
+	list_init(&dev->aliases);
+	list_add(&dev->aliases, &alias->list);
+	dev->end = UINT64_C(0);
+	dev->dev = 0;
+	dev->fd = -1;
+	dev->open_count = 0;
+	dev->block_size = -1;
+	memset(dev->pvid, 0, sizeof(dev->pvid));
+	list_init(&dev->open_list);
+
+	return dev;
+}
+
+static struct device *_dev_create(dev_t d)
 {
 	struct device *dev;
 
 	if (!(dev = _alloc(sizeof(*dev)))) {
-		stack;
+		log_error("struct device allocation failed");
 		return NULL;
 	}
-
+	dev->flags = 0;
 	list_init(&dev->aliases);
 	dev->dev = d;
 	dev->fd = -1;
+	dev->open_count = 0;
+	dev->block_size = -1;
+	dev->end = UINT64_C(0);
+	memset(dev->pvid, 0, sizeof(dev->pvid));
+	list_init(&dev->open_list);
+
 	return dev;
 }
 
+/* Return 1 if we prefer path1 else return 0 */
+static int _compare_paths(const char *path0, const char *path1)
+{
+	int slash0 = 0, slash1 = 0;
+	const char *p;
+	char p0[PATH_MAX], p1[PATH_MAX];
+	char *s0, *s1;
+	struct stat stat0, stat1;
+
+	/* Return the path with fewer slashes */
+	for (p = path0; p++; p = (const char *) strchr(p, '/'))
+		slash0++;
+
+	for (p = path1; p++; p = (const char *) strchr(p, '/'))
+		slash1++;
+
+	if (slash0 < slash1)
+		return 0;
+	if (slash1 < slash0)
+		return 1;
+
+	strncpy(p0, path0, PATH_MAX);
+	strncpy(p1, path1, PATH_MAX);
+	s0 = &p0[0] + 1;
+	s1 = &p1[0] + 1;
+
+	/* We prefer symlinks - they exist for a reason!
+	 * So we prefer a shorter path before the first symlink in the name.
+	 * FIXME Configuration option to invert this? */
+	while (s0) {
+		s0 = strchr(s0, '/');
+		s1 = strchr(s1, '/');
+		if (s0) {
+			*s0 = '\0';
+			*s1 = '\0';
+		}
+		if (lstat(p0, &stat0)) {
+			log_sys_error("lstat", p0);
+			return 1;
+		}
+		if (lstat(p1, &stat1)) {
+			log_sys_error("lstat", p1);
+			return 0;
+		}
+		if (S_ISLNK(stat0.st_mode) && !S_ISLNK(stat1.st_mode))
+			return 0;
+		if (!S_ISLNK(stat0.st_mode) && S_ISLNK(stat1.st_mode))
+			return 1;
+		if (s0) {
+			*s0++ = '/';
+			*s1++ = '/';
+		}
+	}
+
+	/* ASCII comparison */
+	if (strcmp(path0, path1) < 0)
+		return 0;
+	else
+		return 1;
+}
+
 static int _add_alias(struct device *dev, const char *path)
 {
 	struct str_list *sl = _alloc(sizeof(*sl));
+	struct str_list *strl;
+	const char *oldpath;
+	int prefer_old = 1;
 
 	if (!sl) {
 		stack;
 		return 0;
 	}
 
-	if (!(sl->str = pool_strdup(_cache.mem, path))) {
+	/* Is name already there? */
+	list_iterate_items(strl, &dev->aliases) {
+		if (!strcmp(strl->str, path)) {
+			log_debug("%s: Already in device cache", path);
+			return 1;
+		}
+	}
+
+	if (!(sl->str = dm_pool_strdup(_cache.mem, path))) {
 		stack;
 		return 0;
 	}
 
-	list_add(&dev->aliases, &sl->list);
+	if (!list_empty(&dev->aliases)) {
+		oldpath = list_item(dev->aliases.n, struct str_list)->str;
+		prefer_old = _compare_paths(path, oldpath);
+		log_debug("%s: Aliased to %s in device cache%s",
+			  path, oldpath, prefer_old ? "" : " (preferred name)");
+
+	} else
+		log_debug("%s: Added to device cache", path);
+
+	if (prefer_old)
+		list_add(&dev->aliases, &sl->list);
+	else
+		list_add_h(&dev->aliases, &sl->list);
+
 	return 1;
 }
 
@@ -91,28 +239,44 @@ static int _add_alias(struct device *dev, const char *path)
 static int _insert_dev(const char *path, dev_t d)
 {
 	struct device *dev;
+	static dev_t loopfile_count = 0;
+	int loopfile = 0;
+
+	/* Generate pretend device numbers for loopfiles */
+	if (!d) {
+		if (dm_hash_lookup(_cache.names, path))
+			return 1;
+		d = ++loopfile_count;
+		loopfile = 1;
+	}
 
 	/* is this device already registered ? */
-	if (!(dev = (struct device *) btree_lookup(_cache.devices, d))) {
+	if (!(dev = (struct device *) btree_lookup(_cache.devices,
+						   (uint32_t) d))) {
 		/* create new device */
-		if (!(dev = _create_dev(d))) {
+		if (loopfile) {
+			if (!(dev = dev_create_file(path, NULL, NULL, 0))) {
+				stack;
+				return 0;
+			}
+		} else if (!(dev = _dev_create(d))) {
 			stack;
 			return 0;
 		}
 
-		if (!(btree_insert(_cache.devices, d, dev))) {
+		if (!(btree_insert(_cache.devices, (uint32_t) d, dev))) {
 			log_err("Couldn't insert device into binary tree.");
 			_free(dev);
 			return 0;
 		}
 	}
 
-	if (!_add_alias(dev, path)) {
+	if (!loopfile && !_add_alias(dev, path)) {
 		log_err("Couldn't add alias to dev cache.");
 		return 0;
 	}
 
-	if (!hash_insert(_cache.names, path, dev)) {
+	if (!dm_hash_insert(_cache.names, path, dev)) {
 		log_err("Couldn't add name to hash in dev cache.");
 		return 0;
 	}
@@ -122,8 +286,8 @@ static int _insert_dev(const char *path, dev_t d)
 
 static char *_join(const char *dir, const char *name)
 {
-	int len = strlen(dir) + strlen(name) + 2;
-	char *r = dbg_malloc(len);
+	size_t len = strlen(dir) + strlen(name) + 2;
+	char *r = dm_malloc(len);
 	if (r)
 		snprintf(r, len, "%s/%s", dir, name);
 
@@ -173,7 +337,7 @@ static int _insert_dir(const char *dir)
 
 			_collapse_slashes(path);
 			r &= _insert(path, 1);
-			dbg_free(path);
+			dm_free(path);
 
 			free(dirent[n]);
 		}
@@ -183,6 +347,28 @@ static int _insert_dir(const char *dir)
 	return r;
 }
 
+static int _insert_file(const char *path)
+{
+	struct stat info;
+
+	if (stat(path, &info) < 0) {
+		log_sys_very_verbose("stat", path);
+		return 0;
+	}
+
+	if (!S_ISREG(info.st_mode)) {
+		log_debug("%s: Not a regular file", path);
+		return 0;
+	}
+
+	if (!_insert_dev(path, 0)) {
+		stack;
+		return 0;
+	}
+
+	return 1;
+}
+
 static int _insert(const char *path, int rec)
 {
 	struct stat info;
@@ -194,6 +380,17 @@ static int _insert(const char *path, int rec)
 	}
 
 	if (S_ISDIR(info.st_mode)) {	/* add a directory */
+		/* check it's not a symbolic link */
+		if (lstat(path, &info) < 0) {
+			log_sys_very_verbose("lstat", path);
+			return 0;
+		}
+
+		if (S_ISLNK(info.st_mode)) {
+			log_debug("%s: Symbolic link to directory", path);
+			return 0;
+		}
+
 		if (rec)
 			r = _insert_dir(path);
 
@@ -214,33 +411,49 @@ static int _insert(const char *path, int rec)
 	return r;
 }
 
-static void _full_scan(void)
+static void _full_scan(int dev_scan)
 {
-	struct list *dh;
+	struct dir_list *dl;
 
-	if (_cache.has_scanned)
+	if (_cache.has_scanned && !dev_scan)
 		return;
 
-	list_iterate(dh, &_cache.dirs) {
-		struct dir_list *dl = list_item(dh, struct dir_list);
+	list_iterate_items(dl, &_cache.dirs)
 		_insert_dir(dl->dir);
-	};
+
+	list_iterate_items(dl, &_cache.files)
+		_insert_file(dl->dir);
 
 	_cache.has_scanned = 1;
+	init_full_scan_done(1);
+}
+
+int dev_cache_has_scanned(void)
+{
+	return _cache.has_scanned;
+}
+
+void dev_cache_scan(int do_scan)
+{
+	if (!do_scan)
+		_cache.has_scanned = 1;
+	else
+		_full_scan(1);
 }
 
 int dev_cache_init(void)
 {
 	_cache.names = NULL;
+	_cache.has_scanned = 0;
 
-	if (!(_cache.mem = pool_create(10 * 1024))) {
+	if (!(_cache.mem = dm_pool_create("dev_cache", 10 * 1024))) {
 		stack;
 		return 0;
 	}
 
-	if (!(_cache.names = hash_create(128))) {
+	if (!(_cache.names = dm_hash_create(128))) {
 		stack;
-		pool_destroy(_cache.mem);
+		dm_pool_destroy(_cache.mem);
 		_cache.mem = 0;
 		return 0;
 	}
@@ -251,6 +464,7 @@ int dev_cache_init(void)
 	}
 
 	list_init(&_cache.dirs);
+	list_init(&_cache.files);
 
 	return 1;
 
@@ -259,7 +473,7 @@ int dev_cache_init(void)
 	return 0;
 }
 
-void _check_closed(struct device *dev)
+static void _check_closed(struct device *dev)
 {
 	if (dev->fd >= 0)
 		log_err("Device '%s' has been left open.", dev_name(dev));
@@ -267,16 +481,28 @@ void _check_closed(struct device *dev)
 
 static inline void _check_for_open_devices(void)
 {
-	hash_iter(_cache.names, (iterate_fn) _check_closed);
+	dm_hash_iter(_cache.names, (dm_hash_iterate_fn) _check_closed);
 }
 
 void dev_cache_exit(void)
 {
-	_check_for_open_devices();
-
-	pool_destroy(_cache.mem);
 	if (_cache.names)
-		hash_destroy(_cache.names);
+		_check_for_open_devices();
+
+	if (_cache.mem) {
+		dm_pool_destroy(_cache.mem);
+		_cache.mem = NULL;
+	}
+
+	if (_cache.names) {
+		dm_hash_destroy(_cache.names);
+		_cache.names = NULL;
+	}
+
+	_cache.devices = NULL;
+	_cache.has_scanned = 0;
+	list_init(&_cache.dirs);
+	list_init(&_cache.files);
 }
 
 int dev_cache_add_dir(const char *path)
@@ -295,33 +521,75 @@ int dev_cache_add_dir(const char *path)
 		return 1;
 	}
 
-	if (!(dl = _alloc(sizeof(*dl) + strlen(path) + 1)))
+	if (!(dl = _alloc(sizeof(*dl) + strlen(path) + 1))) {
+		log_error("dir_list allocation failed");
 		return 0;
+	}
 
 	strcpy(dl->dir, path);
 	list_add(&_cache.dirs, &dl->list);
 	return 1;
 }
 
+int dev_cache_add_loopfile(const char *path)
+{
+	struct dir_list *dl;
+	struct stat st;
+
+	if (stat(path, &st)) {
+		log_error("Ignoring %s: %s", path, strerror(errno));
+		/* But don't fail */
+		return 1;
+	}
+
+	if (!S_ISREG(st.st_mode)) {
+		log_error("Ignoring %s: Not a regular file", path);
+		return 1;
+	}
+
+	if (!(dl = _alloc(sizeof(*dl) + strlen(path) + 1))) {
+		log_error("dir_list allocation failed for file");
+		return 0;
+	}
+
+	strcpy(dl->dir, path);
+	list_add(&_cache.files, &dl->list);
+	return 1;
+}
+
 /* Check cached device name is still valid before returning it */
 /* This should be a rare occurrence */
+/* set quiet if the cache is expected to be out-of-date */
 /* FIXME Make rest of code pass/cache struct device instead of dev_name */
-const char *dev_name_confirmed(struct device *dev)
+const char *dev_name_confirmed(struct device *dev, int quiet)
 {
 	struct stat buf;
-	char *name;
+	const char *name;
 	int r;
 
+	if ((dev->flags & DEV_REGULAR))
+		return dev_name(dev);
+
 	while ((r = stat(name = list_item(dev->aliases.n,
 					  struct str_list)->str, &buf)) ||
 	       (buf.st_rdev != dev->dev)) {
-		if (r < 0)
-			log_sys_error("stat", name);
-		log_error("Path %s no longer valid for device(%d,%d)",
-			  name, (int) MAJOR(dev->dev), (int) MINOR(dev->dev));
+		if (r < 0) {
+			if (quiet)
+				log_sys_debug("stat", name);
+			else
+				log_sys_error("stat", name);
+		}
+		if (quiet)
+			log_debug("Path %s no longer valid for device(%d,%d)",
+				  name, (int) MAJOR(dev->dev),
+				  (int) MINOR(dev->dev));
+		else
+			log_error("Path %s no longer valid for device(%d,%d)",
+				  name, (int) MAJOR(dev->dev),
+				  (int) MINOR(dev->dev));
 
 		/* Remove the incorrect hash entry */
-		hash_remove(_cache.names, name);
+		dm_hash_remove(_cache.names, name);
 
 		/* Leave list alone if there isn't an alternative name */
 		/* so dev_name will always find something to return. */
@@ -344,30 +612,47 @@ const char *dev_name_confirmed(struct device *dev)
 struct device *dev_cache_get(const char *name, struct dev_filter *f)
 {
 	struct stat buf;
-	struct device *d = (struct device *) hash_lookup(_cache.names, name);
+	struct device *d = (struct device *) dm_hash_lookup(_cache.names, name);
+
+	if (d && (d->flags & DEV_REGULAR))
+		return d;
 
 	/* If the entry's wrong, remove it */
 	if (d && (stat(name, &buf) || (buf.st_rdev != d->dev))) {
-		hash_remove(_cache.names, name);
+		dm_hash_remove(_cache.names, name);
 		d = NULL;
 	}
 
 	if (!d) {
 		_insert(name, 0);
-		d = (struct device *) hash_lookup(_cache.names, name);
+		d = (struct device *) dm_hash_lookup(_cache.names, name);
+		if (!d) {
+			_full_scan(0);
+			d = (struct device *) dm_hash_lookup(_cache.names, name);
+		}
 	}
 
-	return (d && (!f || f->passes_filter(f, d))) ? d : NULL;
+	return (d && (!f || (d->flags & DEV_REGULAR) ||
+		      f->passes_filter(f, d))) ? d : NULL;
 }
 
-struct dev_iter *dev_iter_create(struct dev_filter *f)
+struct dev_iter *dev_iter_create(struct dev_filter *f, int dev_scan)
 {
-	struct dev_iter *di = dbg_malloc(sizeof(*di));
+	struct dev_iter *di = dm_malloc(sizeof(*di));
 
-	if (!di)
+	if (!di) {
+		log_error("dev_iter allocation failed");
 		return NULL;
+	}
+
+
+	if (dev_scan) {
+		/* Flag gets reset between each command */
+		if (!full_scan_done())
+			persistent_filter_wipe(f); /* Calls _full_scan(1) */
+	} else
+		_full_scan(0);
 
-	_full_scan();
 	di->current = btree_first(_cache.devices);
 	di->filter = f;
 
@@ -376,7 +661,7 @@ struct dev_iter *dev_iter_create(struct dev_filter *f)
 
 void dev_iter_destroy(struct dev_iter *iter)
 {
-	dbg_free(iter);
+	dm_free(iter);
 }
 
 static inline struct device *_iter_next(struct dev_iter *iter)
@@ -390,7 +675,7 @@ struct device *dev_iter_get(struct dev_iter *iter)
 {
 	while (iter->current) {
 		struct device *d = _iter_next(iter);
-		if (!iter->filter ||
+		if (!iter->filter || (d->flags & DEV_REGULAR) ||
 		    iter->filter->passes_filter(iter->filter, d))
 			return d;
 	}

lib/device/dev-cache.h

@@ -1,41 +1,51 @@
 /*
- * Copyright (C) 2001 Sistina Software (UK) Limited.
+ * Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.  
+ * Copyright (C) 2004 Red Hat, Inc. All rights reserved.
  *
- * This file is released under the GPL.
+ * This file is part of LVM2.
+ *
+ * This copyrighted material is made available to anyone wishing to use,
+ * modify, copy, or redistribute it subject to the terms and conditions
+ * of the GNU General Public License v.2.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
 
 #ifndef _LVM_DEV_CACHE_H
 #define _LVM_DEV_CACHE_H
 
-#include <sys/types.h>
-#include "lvm-types.h"
 #include "device.h"
 
 /*
  * predicate for devices.
  */
 struct dev_filter {
-	int (*passes_filter)(struct dev_filter *f, struct device *dev);
-	void (*destroy)(struct dev_filter *f);
+	int (*passes_filter) (struct dev_filter * f, struct device * dev);
+	void (*destroy) (struct dev_filter * f);
 	void *private;
 };
 
-
 /*
  * The global device cache.
  */
 int dev_cache_init(void);
 void dev_cache_exit(void);
 
-int dev_cache_add_dir(const char *path);
-struct device *dev_cache_get(const char *name, struct dev_filter *f);
+/* Trigger(1) or avoid(0) a scan */
+void dev_cache_scan(int do_scan);
+int dev_cache_has_scanned(void);
 
+int dev_cache_add_dir(const char *path);
+int dev_cache_add_loopfile(const char *path);
+struct device *dev_cache_get(const char *name, struct dev_filter *f);
 
 /*
  * Object for iterating through the cache.
  */
 struct dev_iter;
-struct dev_iter *dev_iter_create(struct dev_filter *f);
+struct dev_iter *dev_iter_create(struct dev_filter *f, int dev_scan);
 void dev_iter_destroy(struct dev_iter *iter);
 struct device *dev_iter_get(struct dev_iter *iter);
 

lib/device/dev-io.c

@@ -1,51 +1,290 @@
 /*
- * Copyright (C) 2001 Sistina Software
+ * Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.
+ * Copyright (C) 2004 Red Hat, Inc. All rights reserved.
  *
- * This file is released under the LGPL.
+ * This file is part of LVM2.
+ *
+ * This copyrighted material is made available to anyone wishing to use,
+ * modify, copy, or redistribute it subject to the terms and conditions
+ * of the GNU General Public License v.2.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
 
-#include "device.h"
+#include "lib.h"
 #include "lvm-types.h"
-#include "log.h"
+#include "device.h"
+#include "metadata.h"
+#include "lvmcache.h"
+#include "memlock.h"
+#include "locking.h"
 
-#include <sys/types.h>
+#include <limits.h>
 #include <sys/stat.h>
 #include <fcntl.h>
 #include <unistd.h>
 #include <sys/ioctl.h>
-#include <linux/fs.h>		// UGH!!! for BLKSSZGET
 
-int dev_get_size(struct device *dev, uint64_t * size)
+#ifdef linux
+#  define u64 uint64_t		/* Missing without __KERNEL__ */
+#  undef WNOHANG		/* Avoid redefinition */
+#  undef WUNTRACED		/* Avoid redefinition */
+#  include <linux/fs.h>		/* For block ioctl definitions */
+#  define BLKSIZE_SHIFT SECTOR_SHIFT
+#  ifndef BLKGETSIZE64		/* fs.h out-of-date */
+#    define BLKGETSIZE64 _IOR(0x12, 114, size_t)
+#  endif /* BLKGETSIZE64 */
+#else
+#  include <sys/disk.h>
+#  define BLKBSZGET DKIOCGETBLOCKSIZE
+#  define BLKSSZGET DKIOCGETBLOCKSIZE
+#  define BLKGETSIZE64 DKIOCGETBLOCKCOUNT
+#  define BLKFLSBUF DKIOCSYNCHRONIZECACHE
+#  define BLKSIZE_SHIFT 0
+#endif
+
+#ifdef O_DIRECT_SUPPORT
+#  ifndef O_DIRECT
+#    error O_DIRECT support configured but O_DIRECT definition not found in headers
+#  endif
+#endif
+
+static LIST_INIT(_open_devices);
+
+/*-----------------------------------------------------------------
+ * The standard io loop that keeps submitting an io until it's
+ * all gone.
+ *---------------------------------------------------------------*/
+static int _io(struct device_area *where, void *buffer, int should_write)
+{
+	int fd = dev_fd(where->dev);
+	ssize_t n = 0;
+	size_t total = 0;
+
+	if (fd < 0) {
+		log_error("Attempt to read an unopened device (%s).",
+			  dev_name(where->dev));
+		return 0;
+	}
+
+	/*
+	 * Skip all writes in test mode.
+	 */
+	if (should_write && test_mode())
+		return 1;
+
+	if (where->size > SSIZE_MAX) {
+		log_error("Read size too large: %" PRIu64, where->size);
+		return 0;
+	}
+
+	if (lseek(fd, (off_t) where->start, SEEK_SET) < 0) {
+		log_error("%s: lseek %" PRIu64 " failed: %s",
+			  dev_name(where->dev), (uint64_t) where->start,
+			  strerror(errno));
+		return 0;
+	}
+
+	while (total < (size_t) where->size) {
+		do
+			n = should_write ?
+			    write(fd, buffer, (size_t) where->size - total) :
+			    read(fd, buffer, (size_t) where->size - total);
+		while ((n < 0) && ((errno == EINTR) || (errno == EAGAIN)));
+
+		if (n < 0)
+			log_error("%s: %s failed after %" PRIu64 " of %" PRIu64
+				  " at %" PRIu64 ": %s", dev_name(where->dev),
+				  should_write ? "write" : "read",
+				  (uint64_t) total,
+				  (uint64_t) where->size,
+				  (uint64_t) where->start, strerror(errno));
+
+		if (n <= 0)
+			break;
+
+		total += n;
+		buffer += n;
+	}
+
+	return (total == (size_t) where->size);
+}
+
+/*-----------------------------------------------------------------
+ * LVM2 uses O_DIRECT when performing metadata io, which requires
+ * block size aligned accesses.  If any io is not aligned we have
+ * to perform the io via a bounce buffer, obviously this is quite
+ * inefficient.
+ *---------------------------------------------------------------*/
+
+/*
+ * Get the sector size from an _open_ device.
+ */
+static int _get_block_size(struct device *dev, unsigned int *size)
 {
-	int fd;
-	long s;
 	const char *name = dev_name(dev);
 
-	log_very_verbose("Getting size of %s", name);
+	if ((dev->block_size == -1)) {
+		if (ioctl(dev_fd(dev), BLKBSZGET, &dev->block_size) < 0) {
+			log_sys_error("ioctl BLKBSZGET", name);
+			return 0;
+		}
+		log_debug("%s: block size is %u bytes", name, dev->block_size);
+	}
+
+	*size = (unsigned int) dev->block_size;
+
+	return 1;
+}
+
+/*
+ * Widens a region to be an aligned region.
+ */
+static void _widen_region(unsigned int block_size, struct device_area *region,
+			  struct device_area *result)
+{
+	uint64_t mask = block_size - 1, delta;
+	memcpy(result, region, sizeof(*result));
+
+	/* adjust the start */
+	delta = result->start & mask;
+	if (delta) {
+		result->start -= delta;
+		result->size += delta;
+	}
+
+	/* adjust the end */
+	delta = (result->start + result->size) & mask;
+	if (delta)
+		result->size += block_size - delta;
+}
+
+static int _aligned_io(struct device_area *where, void *buffer,
+		       int should_write)
+{
+	void *bounce;
+	unsigned int block_size = 0;
+	uintptr_t mask;
+	struct device_area widened;
+
+	if (!(where->dev->flags & DEV_REGULAR) &&
+	    !_get_block_size(where->dev, &block_size)) {
+		stack;
+		return 0;
+	}
+
+	if (!block_size)
+		block_size = getpagesize();
+
+	_widen_region(block_size, where, &widened);
+
+	/* Do we need to use a bounce buffer? */
+	mask = block_size - 1;
+	if (!memcmp(where, &widened, sizeof(widened)) &&
+	    !((uintptr_t) buffer & mask))
+		return _io(where, buffer, should_write);
+
+	/* Allocate a bounce buffer with an extra block */
+	if (!(bounce = alloca((size_t) widened.size + block_size))) {
+		log_error("Bounce buffer alloca failed");
+		return 0;
+	}
+
+	/*
+	 * Realign start of bounce buffer (using the extra sector)
+	 */
+	if (((uintptr_t) bounce) & mask)
+		bounce = (void *) ((((uintptr_t) bounce) + mask) & ~mask);
+
+	/* channel the io through the bounce buffer */
+	if (!_io(&widened, bounce, 0)) {
+		if (!should_write) {
+			stack;
+			return 0;
+		}
+		/* FIXME pre-extend the file */
+		memset(bounce, '\n', widened.size);
+	}
+
+	if (should_write) {
+		memcpy(bounce + (where->start - widened.start), buffer,
+		       (size_t) where->size);
+
+		/* ... then we write */
+		return _io(&widened, bounce, 1);
+	}
+
+	memcpy(buffer, bounce + (where->start - widened.start),
+	       (size_t) where->size);
+
+	return 1;
+}
+
+static int _dev_get_size_file(const struct device *dev, uint64_t *size)
+{
+	const char *name = dev_name(dev);
+	struct stat info;
+
+	if (stat(name, &info)) {
+		log_sys_error("stat", name);
+		return 0;
+	}
+
+	*size = info.st_size;
+	*size >>= SECTOR_SHIFT;	/* Convert to sectors */
+
+	log_very_verbose("%s: size is %" PRIu64 " sectors", name, *size);
+
+	return 1;
+}
+
+static int _dev_get_size_dev(const struct device *dev, uint64_t *size)
+{
+	int fd;
+	const char *name = dev_name(dev);
+
 	if ((fd = open(name, O_RDONLY)) < 0) {
 		log_sys_error("open", name);
 		return 0;
 	}
 
-	/* FIXME: add 64 bit ioctl */
-	if (ioctl(fd, BLKGETSIZE, &s) < 0) {
-		log_sys_error("ioctl BLKGETSIZE", name);
-		close(fd);
+	if (ioctl(fd, BLKGETSIZE64, size) < 0) {
+		log_sys_error("ioctl BLKGETSIZE64", name);
+		if (close(fd))
+			log_sys_error("close", name);
 		return 0;
 	}
 
-	close(fd);
-	*size = (uint64_t) s;
+	*size >>= BLKSIZE_SHIFT;	/* Convert to sectors */
+	if (close(fd))
+		log_sys_error("close", name);
+
+	log_very_verbose("%s: size is %" PRIu64 " sectors", name, *size);
+
 	return 1;
 }
 
-int dev_get_sectsize(struct device *dev, uint32_t * size)
+/*-----------------------------------------------------------------
+ * Public functions
+ *---------------------------------------------------------------*/
+
+int dev_get_size(const struct device *dev, uint64_t *size)
+{
+	if ((dev->flags & DEV_REGULAR))
+		return _dev_get_size_file(dev, size);
+	else
+		return _dev_get_size_dev(dev, size);
+}
+
+/* FIXME Unused
+int dev_get_sectsize(struct device *dev, uint32_t *size)
 {
 	int fd;
 	int s;
 	const char *name = dev_name(dev);
 
-	log_very_verbose("Getting size of %s", name);
 	if ((fd = open(name, O_RDONLY)) < 0) {
 		log_sys_error("open", name);
 		return 0;
@@ -59,191 +298,345 @@ int dev_get_sectsize(struct device *dev, uint32_t * size)
 
 	close(fd);
 	*size = (uint32_t) s;
+
+	log_very_verbose("%s: sector size is %" PRIu32 " bytes", name, *size);
+
 	return 1;
 }
+*/
 
-int dev_open(struct device *dev, int flags)
+void dev_flush(struct device *dev)
+{
+	if (!(dev->flags & DEV_REGULAR) && ioctl(dev->fd, BLKFLSBUF, 0) >= 0)
+		return;
+
+	if (fsync(dev->fd) >= 0)
+		return;
+
+	sync();
+}
+
+int dev_open_flags(struct device *dev, int flags, int direct, int quiet)
 {
 	struct stat buf;
-	const char *name = dev_name_confirmed(dev);
+	const char *name;
+	int need_excl = 0, need_rw = 0;
 
-	if (!name) {
+	if ((flags & O_ACCMODE) == O_RDWR)
+		need_rw = 1;
+
+	if ((flags & O_EXCL))
+		need_excl = 1;
+
+	if (dev->fd >= 0) {
+		if (((dev->flags & DEV_OPENED_RW) || !need_rw) &&
+		    ((dev->flags & DEV_OPENED_EXCL) || !need_excl)) {
+			dev->open_count++;
+			return 1;
+		}
+
+		if (dev->open_count && !need_excl) {
+			/* FIXME Ensure we never get here */
+			log_debug("WARNING: %s already opened read-only", 
+				  dev_name(dev));
+			dev->open_count++;
+		}
+
+		dev_close_immediate(dev);
+	}
+
+	if (memlock())
+		log_error("WARNING: dev_open(%s) called while suspended",
+			  dev_name(dev));
+
+	if (dev->flags & DEV_REGULAR)
+		name = dev_name(dev);
+	else if (!(name = dev_name_confirmed(dev, quiet))) {
 		stack;
 		return 0;
 	}
 
-	if (dev->fd >= 0) {
-		log_error("Device '%s' has already been opened", name);
-		return 0;
-	}
-
-	if ((stat(name, &buf) < 0) || (buf.st_rdev != dev->dev)) {
+	if (!(dev->flags & DEV_REGULAR) &&
+	    ((stat(name, &buf) < 0) || (buf.st_rdev != dev->dev))) {
 		log_error("%s: stat failed: Has device name changed?", name);
 		return 0;
 	}
 
-	if ((dev->fd = open(name, flags)) < 0) {
-		log_sys_error("open", name);
+#ifdef O_DIRECT_SUPPORT
+	if (direct) {
+		if (!(dev->flags & DEV_O_DIRECT_TESTED))
+			dev->flags |= DEV_O_DIRECT;
+
+		if ((dev->flags & DEV_O_DIRECT))
+			flags |= O_DIRECT;
+	}
+#endif
+
+#ifdef O_NOATIME
+	/* Don't update atime on device inodes */
+	if (!(dev->flags & DEV_REGULAR))
+		flags |= O_NOATIME;
+#endif
+
+	if ((dev->fd = open(name, flags, 0777)) < 0) {
+#ifdef O_DIRECT_SUPPORT
+		if (direct && !(dev->flags & DEV_O_DIRECT_TESTED)) {
+			flags &= ~O_DIRECT;
+			if ((dev->fd = open(name, flags, 0777)) >= 0) {
+				dev->flags &= ~DEV_O_DIRECT;
+				log_debug("%s: Not using O_DIRECT", name);
+				goto opened;
+			}
+		}
+#endif
+		if (quiet)
+			log_sys_debug("open", name);
+		else
+			log_sys_error("open", name);
 		return 0;
 	}
 
-	if ((fstat(dev->fd, &buf) < 0) || (buf.st_rdev != dev->dev)) {
+#ifdef O_DIRECT_SUPPORT
+      opened:
+	if (direct)
+		dev->flags |= DEV_O_DIRECT_TESTED;
+#endif
+	dev->open_count++;
+	dev->flags &= ~DEV_ACCESSED_W;
+
+	if (need_rw)
+		dev->flags |= DEV_OPENED_RW;
+	else
+		dev->flags &= ~DEV_OPENED_RW;
+
+	if (need_excl)
+		dev->flags |= DEV_OPENED_EXCL;
+	else
+		dev->flags &= ~DEV_OPENED_EXCL;
+
+	if (!(dev->flags & DEV_REGULAR) &&
+	    ((fstat(dev->fd, &buf) < 0) || (buf.st_rdev != dev->dev))) {
 		log_error("%s: fstat failed: Has device name changed?", name);
-		dev_close(dev);
+		dev_close_immediate(dev);
 		return 0;
 	}
 
-	dev->flags = 0;
+#ifndef O_DIRECT_SUPPORT
+	if (!(dev->flags & DEV_REGULAR))
+		dev_flush(dev);
+#endif
+
+	if ((flags & O_CREAT) && !(flags & O_TRUNC))
+		dev->end = lseek(dev->fd, (off_t) 0, SEEK_END);
+
+	list_add(&_open_devices, &dev->open_list);
+
+	log_debug("Opened %s %s%s%s", dev_name(dev),
+		  dev->flags & DEV_OPENED_RW ? "RW" : "RO",
+		  dev->flags & DEV_OPENED_EXCL ? " O_EXCL" : "",
+		  dev->flags & DEV_O_DIRECT ? " O_DIRECT" : "");
 
 	return 1;
 }
 
-static void _flush(int fd)
+int dev_open_quiet(struct device *dev)
 {
-	ioctl(fd, BLKFLSBUF, 0);
+	int flags;
+
+	flags = vg_write_lock_held() ? O_RDWR : O_RDONLY;
+
+	return dev_open_flags(dev, flags, 1, 1);
 }
 
-int dev_close(struct device *dev)
+int dev_open(struct device *dev)
 {
+	int flags;
+
+	flags = vg_write_lock_held() ? O_RDWR : O_RDONLY;
+
+	return dev_open_flags(dev, flags, 1, 0);
+}
+
+int dev_test_excl(struct device *dev)
+{
+	int flags;
+	int r;
+
+	flags = vg_write_lock_held() ? O_RDWR : O_RDONLY;
+	flags |= O_EXCL;
+
+	r = dev_open_flags(dev, flags, 1, 1);
+	if (r)
+		dev_close_immediate(dev);
+
+	return r;
+}
+
+static void _close(struct device *dev)
+{
+	if (close(dev->fd))
+		log_sys_error("close", dev_name(dev));
+	dev->fd = -1;
+	dev->block_size = -1;
+	list_del(&dev->open_list);
+
+	log_debug("Closed %s", dev_name(dev));
+
+	if (dev->flags & DEV_ALLOCED) {
+		dm_free((void *) list_item(dev->aliases.n, struct str_list)->
+			 str);
+		dm_free(dev->aliases.n);
+		dm_free(dev);
+	}
+}
+
+static int _dev_close(struct device *dev, int immediate)
+{
+	struct lvmcache_info *info;
+
 	if (dev->fd < 0) {
 		log_error("Attempt to close device '%s' "
 			  "which is not open.", dev_name(dev));
 		return 0;
 	}
 
+#ifndef O_DIRECT_SUPPORT
 	if (dev->flags & DEV_ACCESSED_W)
-		_flush(dev->fd);
+		dev_flush(dev);
+#endif
 
-	if (close(dev->fd))
-		log_sys_error("close", dev_name(dev));
+	if (dev->open_count > 0)
+		dev->open_count--;
 
-	dev->fd = -1;
+	if (immediate && dev->open_count)
+		log_debug("%s: Immediate close attempt while still referenced",
+			  dev_name(dev));
+
+	/* Close unless device is known to belong to a locked VG */
+	if (immediate ||
+	    (dev->open_count < 1 && 
+	     (!(info = info_from_pvid(dev->pvid)) ||
+	      !info->vginfo ||
+	      !vgname_is_locked(info->vginfo->vgname))))
+		_close(dev);
 
 	return 1;
 }
 
-/*
- *  FIXME: factor common code out.
+int dev_close(struct device *dev)
+{
+	return _dev_close(dev, 0);
+}
+
+int dev_close_immediate(struct device *dev)
+{
+	return _dev_close(dev, 1);
+}
+
+void dev_close_all(void)
+{
+	struct list *doh, *doht;
+	struct device *dev;
+
+	list_iterate_safe(doh, doht, &_open_devices) {
+		dev = list_struct_base(doh, struct device, open_list);
+		if (dev->open_count < 1)
+			_close(dev);
+	}
+}
+
+int dev_read(struct device *dev, uint64_t offset, size_t len, void *buffer)
+{
+	struct device_area where;
+
+	if (!dev->open_count) {
+		stack;
+		return 0;
+	}
+
+	where.dev = dev;
+	where.start = offset;
+	where.size = len;
+
+	return _aligned_io(&where, buffer, 0);
+}
+
+/* FIXME If O_DIRECT can't extend file, dev_extend first; dev_truncate after.
+ *       But fails if concurrent processes writing
  */
-int _read(int fd, void *buf, size_t count)
+
+/* FIXME pre-extend the file */
+int dev_append(struct device *dev, size_t len, void *buffer)
 {
-	size_t n = 0;
-	int tot = 0;
+	int r;
 
-	while (tot < count) {
-		do
-			n = read(fd, buf, count - tot);
-		while ((n < 0) && ((errno == EINTR) || (errno == EAGAIN)));
-
-		if (n <= 0)
-			return tot ? tot : n;
-
-		tot += n;
-		buf += n;
+	if (!dev->open_count) {
+		stack;
+		return 0;
 	}
 
-	return tot;
+	r = dev_write(dev, dev->end, len, buffer);
+	dev->end += (uint64_t) len;
+
+#ifndef O_DIRECT_SUPPORT
+	dev_flush(dev);
+#endif
+	return r;
 }
 
-int64_t dev_read(struct device * dev, uint64_t offset,
-		 int64_t len, void *buffer)
+int dev_write(struct device *dev, uint64_t offset, size_t len, void *buffer)
 {
-	const char *name = dev_name(dev);
-	int fd = dev->fd;
+	struct device_area where;
 
-	if (fd < 0) {
-		log_err("Attempt to read an unopened device (%s).", name);
+	if (!dev->open_count) {
+		stack;
 		return 0;
 	}
 
-	if (lseek(fd, offset, SEEK_SET) < 0) {
-		log_sys_error("lseek", name);
-		return 0;
-	}
-
-	return _read(fd, buffer, len);
-}
-
-int _write(int fd, const void *buf, size_t count)
-{
-	size_t n = 0;
-	int tot = 0;
-
-	/* Skip all writes */
-	if (test_mode())
-		return count;
-
-	while (tot < count) {
-		do
-			n = write(fd, buf, count - tot);
-		while ((n < 0) && ((errno == EINTR) || (errno == EAGAIN)));
-
-		if (n <= 0)
-			return tot ? tot : n;
-
-		tot += n;
-		buf += n;
-	}
-
-	return tot;
-}
-
-int64_t dev_write(struct device * dev, uint64_t offset,
-		  int64_t len, void *buffer)
-{
-	const char *name = dev_name(dev);
-	int fd = dev->fd;
-
-	if (fd < 0) {
-		log_error("Attempt to write to unopened device %s", name);
-		return 0;
-	}
-
-	if (lseek(fd, offset, SEEK_SET) < 0) {
-		log_sys_error("lseek", name);
-		return 0;
-	}
+	where.dev = dev;
+	where.start = offset;
+	where.size = len;
 
 	dev->flags |= DEV_ACCESSED_W;
 
-	return _write(fd, buffer, len);
+	return _aligned_io(&where, buffer, 1);
 }
 
-int dev_zero(struct device *dev, uint64_t offset, int64_t len)
+int dev_zero(struct device *dev, uint64_t offset, size_t len)
 {
-	int64_t r, s;
+	size_t s;
 	char buffer[4096];
-	const char *name = dev_name(dev);
-	int fd = dev->fd;
 
-	if (fd < 0) {
-		log_error("Attempt to zero part of an unopened device %s",
-			  name);
+	if (!dev_open(dev)) {
+		stack;
 		return 0;
 	}
 
-	if (lseek(fd, offset, SEEK_SET) < 0) {
-		log_sys_error("lseek", name);
-		return 0;
-	}
+	if ((offset % SECTOR_SIZE) || (len % SECTOR_SIZE))
+		log_debug("Wiping %s at %" PRIu64 " length %" PRIsize_t,
+			  dev_name(dev), offset, len);
+	else
+		log_debug("Wiping %s at sector %" PRIu64 " length %" PRIsize_t
+			  " sectors", dev_name(dev), offset >> SECTOR_SHIFT,
+			  len >> SECTOR_SHIFT);
 
 	memset(buffer, 0, sizeof(buffer));
 	while (1) {
 		s = len > sizeof(buffer) ? sizeof(buffer) : len;
-		r = _write(fd, buffer, s);
-
-		if (r <= 0)
+		if (!dev_write(dev, offset, s, buffer))
 			break;
 
-		len -= r;
-		if (!len) {
-			r = 1;
+		len -= s;
+		if (!len)
 			break;
-		}
+
+		offset += s;
 	}
 
 	dev->flags |= DEV_ACCESSED_W;
 
-	/* FIXME: Always display error */
+	if (!dev_close(dev))
+		stack;
+
 	return (len == 0);
 }

lib/device/dev-md.c

@@ -0,0 +1,69 @@
+/*
+ * Copyright (C) 2004 Luca Berra
+ * Copyright (C) 2004 Red Hat, Inc. All rights reserved.
+ *
+ * This file is part of LVM2.
+ *
+ * This copyrighted material is made available to anyone wishing to use,
+ * modify, copy, or redistribute it subject to the terms and conditions
+ * of the GNU Lesser General Public License v.2.1.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#include "lib.h"
+#include "metadata.h"
+#include "xlate.h"
+
+/* Lifted from <linux/raid/md_p.h> because of difficulty including it */
+
+#define MD_SB_MAGIC 0xa92b4efc
+#define MD_RESERVED_BYTES (64 * 1024)
+#define MD_RESERVED_SECTORS (MD_RESERVED_BYTES / 512)
+#define MD_NEW_SIZE_SECTORS(x) ((x & ~(MD_RESERVED_SECTORS - 1)) \
+				- MD_RESERVED_SECTORS)
+
+/*
+ * Returns -1 on error
+ */
+int dev_is_md(struct device *dev, uint64_t *sb)
+{
+	int ret = 0;
+
+#ifdef linux
+
+	uint64_t size, sb_offset;
+	uint32_t md_magic;
+
+	if (!dev_get_size(dev, &size)) {
+		stack;
+		return -1;
+	}
+
+	if (size < MD_RESERVED_SECTORS * 2)
+		return 0;
+
+	if (!dev_open(dev)) {
+		stack;
+		return -1;
+	}
+
+	sb_offset = MD_NEW_SIZE_SECTORS(size) << SECTOR_SHIFT;
+
+	/* Check if it is an md component device. */
+	if (dev_read(dev, sb_offset, sizeof(uint32_t), &md_magic) &&
+	    (md_magic == xlate32(MD_SB_MAGIC))) {
+		if (sb)
+			*sb = sb_offset;
+		ret = 1;
+	}
+
+	if (!dev_close(dev))
+		stack;
+
+#endif
+	return ret;
+}
+

lib/device/device.c

@@ -1,56 +1,126 @@
 /*
- * Copyright (C) 2001 Sistina Software
+ * Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.
+ * Copyright (C) 2004 Red Hat, Inc. All rights reserved.
  *
- * This LVM library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Library General Public
- * License as published by the Free Software Foundation; either
- * version 2 of the License, or (at your option) any later version.
+ * This file is part of LVM2.
  *
- * This LVM library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Library General Public License for more details.
+ * This copyrighted material is made available to anyone wishing to use,
+ * modify, copy, or redistribute it subject to the terms and conditions
+ * of the GNU General Public License v.2.
  *
- * You should have received a copy of the GNU Library General Public
- * License along with this LVM library; if not, write to the Free
- * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
- * MA 02111-1307, USA
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
 
-#include <sys/types.h>
+#include "lib.h"
+#include "lvm-types.h"
+#include "device.h"
+#include "metadata.h"
+#include "filter.h"
+#include "xlate.h"
+
+/* See linux/genhd.h and fs/partitions/msdos */
+
+#define PART_MAGIC 0xAA55
+#define PART_MAGIC_OFFSET UINT64_C(0x1FE)
+#define PART_OFFSET UINT64_C(0x1BE)
+
+struct partition {
+        uint8_t boot_ind;
+        uint8_t head;
+        uint8_t sector;
+        uint8_t cyl;
+        uint8_t sys_ind;	/* partition type */
+        uint8_t end_head;
+        uint8_t end_sector;
+        uint8_t end_cyl;
+        uint32_t start_sect;
+        uint32_t nr_sects;
+} __attribute__((packed));
+
+static int _is_partitionable(struct device *dev)
+{
+	int parts = max_partitions(MAJOR(dev->dev));
+
+	if ((parts <= 1) || (MINOR(dev->dev) % parts))
+		return 0;
+
+	return 1;
+}
+
+static int _has_partition_table(struct device *dev)
+{
+	int ret = 0;
+	unsigned p;
+	uint8_t buf[SECTOR_SIZE];
+	uint16_t *part_magic;
+	struct partition *part;
+
+	if (!dev_open(dev)) {
+		stack;
+		return -1;
+	}
+
+	if (!dev_read(dev, 0, sizeof(buf), &buf)) {
+		stack;
+		goto out;
+	}
+
+	/* FIXME Check for other types of partition table too */
+
+	/* Check for msdos partition table */
+	part_magic = (uint16_t *)(buf + PART_MAGIC_OFFSET);
+	if ((*part_magic == xlate16(PART_MAGIC))) {
+		part = (struct partition *) (buf + PART_OFFSET);
+		for (p = 0; p < 4; p++, part++) {
+			/* Table is invalid if boot indicator not 0 or 0x80 */
+			if ((part->boot_ind & 0x7f)) {
+				ret = 0;
+				break;
+			}
+			/* Must have at least one non-empty partition */
+			if (part->nr_sects)
+				ret = 1;
+		}
+	}
+
+      out:
+	if (!dev_close(dev))
+		stack;
+
+	return ret;
+}
+
+int is_partitioned_dev(struct device *dev)
+{
+	if (!_is_partitionable(dev))
+		return 0;
+
+	return _has_partition_table(dev);
+}
+
+#if 0
 #include <sys/stat.h>
 #include <sys/mman.h>
 #include <stdio.h>
 #include <unistd.h>
 #include <fcntl.h>
 #include <ctype.h>
-#include <string.h>
+
 #include <errno.h>
 #include <sys/ioctl.h>
-
-#include "dbg_malloc.h"
-#include "log.h"
-#include "dev-cache.h"
-#include "metadata.h"
-#include "device.h"
-
 #include <linux/fs.h>
 #include <linux/major.h>
 #include <linux/genhd.h>
 
-#if 0
 int _get_partition_type(struct dev_filter *filter, struct device *d);
 
-#define MINOR_PART(dm, d) (MINOR((d)->dev) % dev_max_partitions(dm, (d)->dev))
+#define MINOR_PART(dev) (MINOR((dev)->dev) % max_partitions(MINOR((dev)->dev)))
 
-int is_whole_disk(struct dev_filter *filter, struct device *d)
+int is_extended_partition(struct device *d)
 {
-	return (MINOR_PART(dm, d)) ? 0 : 1;
-}
-
-int is_extended_partition(struct dev_mgr *dm, struct device *d)
-{
-	return (MINOR_PART(dm, d) > 4) ? 1 : 0;
+	return (MINOR_PART(d) > 4) ? 1 : 0;
 }
 
 struct device *dev_primary(struct dev_mgr *dm, struct device *d)
@@ -132,7 +202,7 @@ int _get_partition_type(struct dev_mgr *dm, struct device *d)
 		return 0;
 	}
 
-	if (!(buffer = dbg_malloc(SECTOR_SIZE))) {
+	if (!(buffer = dm_malloc(SECTOR_SIZE))) {
 		log_error("Failed to allocate partition table buffer");
 		return 0;
 	}

lib/device/device.h

@@ -1,28 +1,51 @@
 /*
- * Copyright (C) 2001 Sistina Software (UK) Limited.
+ * Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.  
+ * Copyright (C) 2004 Red Hat, Inc. All rights reserved.
  *
- * This file is released under the GPL.
+ * This file is part of LVM2.
+ *
+ * This copyrighted material is made available to anyone wishing to use,
+ * modify, copy, or redistribute it subject to the terms and conditions
+ * of the GNU General Public License v.2.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
 
 #ifndef _LVM_DEVICE_H
 #define _LVM_DEVICE_H
 
-#include "lvm-types.h"
-#include "list.h"
+#include "uuid.h"
+
+#include <fcntl.h>
 
 #define DEV_ACCESSED_W		0x00000001	/* Device written to? */
+#define DEV_REGULAR		0x00000002	/* Regular file? */
+#define DEV_ALLOCED		0x00000004	/* dm_malloc used */
+#define DEV_OPENED_RW		0x00000008	/* Opened RW */
+#define DEV_OPENED_EXCL		0x00000010	/* Opened EXCL */
+#define DEV_O_DIRECT		0x00000020	/* Use O_DIRECT */
+#define DEV_O_DIRECT_TESTED	0x00000040	/* DEV_O_DIRECT is reliable */
 
 /*
  * All devices in LVM will be represented by one of these.
  * pointer comparisons are valid.
  */
 struct device {
-	struct list aliases; /* struct str_list from lvm-types.h */
+	struct list aliases;	/* struct str_list from lvm-types.h */
 	dev_t dev;
 
 	/* private */
 	int fd;
+	int open_count;
+	int block_size;
 	uint32_t flags;
+	uint64_t end;
+	struct list open_list;
+
+	char pvid[ID_LEN + 1];
+	char _padding[7];
 };
 
 struct device_list {
@@ -30,33 +53,58 @@ struct device_list {
 	struct device *dev;
 };
 
+struct device_area {
+	struct device *dev;
+	uint64_t start;		/* Bytes */
+	uint64_t size;		/* Bytes */
+};
+
 /*
  * All io should use these routines.
  */
-int dev_get_size(struct device *dev, uint64_t *size);
+int dev_get_size(const struct device *dev, uint64_t *size);
 int dev_get_sectsize(struct device *dev, uint32_t *size);
 
-int dev_open(struct device *dev, int flags);
+/* Use quiet version if device number could change e.g. when opening LV */
+int dev_open(struct device *dev);
+int dev_open_quiet(struct device *dev);
+int dev_open_flags(struct device *dev, int flags, int direct, int quiet);
 int dev_close(struct device *dev);
+int dev_close_immediate(struct device *dev);
+void dev_close_all(void);
+int dev_test_excl(struct device *dev);
 
-int64_t dev_read(struct device *dev,
-		 uint64_t offset, int64_t len, void *buffer);
-int64_t dev_write(struct device *dev,
-		  uint64_t offset, int64_t len, void *buffer);
-int dev_zero(struct device *dev, uint64_t offset, int64_t len);
+static inline int dev_fd(struct device *dev)
+{
+	return dev->fd;
+}
 
+int dev_read(struct device *dev, uint64_t offset, size_t len, void *buffer);
+int dev_write(struct device *dev, uint64_t offset, size_t len, void *buffer);
+int dev_append(struct device *dev, size_t len, void *buffer);
+int dev_zero(struct device *dev, uint64_t offset, size_t len);
+void dev_flush(struct device *dev);
 
-static inline const char *dev_name(struct device *dev) {
+struct device *dev_create_file(const char *filename, struct device *dev,
+			       struct str_list *alias, int use_malloc);
+
+static inline const char *dev_name(const struct device *dev)
+{
 	return (dev) ? list_item(dev->aliases.n, struct str_list)->str :
-		       "unknown device";
+	    "unknown device";
 }
 
 /* Return a valid device name from the alias list; NULL otherwise */
-const char *dev_name_confirmed(struct device *dev);
+const char *dev_name_confirmed(struct device *dev, int quiet);
 
-static inline int is_lvm_partition(const char *name) {
-	return 1;
-}
+/* Does device contain md superblock?  If so, where? */
+int dev_is_md(struct device *dev, uint64_t *sb);
+
+/* FIXME Check partition type if appropriate */
+
+#define is_lvm_partition(a) 1
+/* int is_lvm_partition(const char *name); */
+
+int is_partitioned_dev(struct device *dev);
 
 #endif
-

lib/display/display.c

@@ -1,65 +1,202 @@
 /*
- * Copyright (C) 2001  Sistina Software
+ * Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.
+ * Copyright (C) 2004 Red Hat, Inc. All rights reserved.
  *
- * This LVM library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Library General Public
- * License as published by the Free Software Foundation; either
- * version 2 of the License, or (at your option) any later version.
+ * This file is part of LVM2.
  *
- * This LVM library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Library General Public License for more details.
- *
- * You should have received a copy of the GNU Library General Public
- * License along with this LVM library; if not, write to the Free
- * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
- * MA 02111-1307, USA
+ * This copyrighted material is made available to anyone wishing to use,
+ * modify, copy, or redistribute it subject to the terms and conditions
+ * of the GNU General Public License v.2.
  *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
 
+#include "lib.h"
 #include "metadata.h"
-#include "dbg_malloc.h"
-#include "log.h"
 #include "display.h"
 #include "activate.h"
-#include "uuid.h"
 #include "toolcontext.h"
-
-#include <sys/types.h>
-#include <string.h>
+#include "segtype.h"
 
 #define SIZE_BUF 128
 
-char *display_size(uint64_t size, size_len_t sl)
+static struct {
+	alloc_policy_t alloc;
+	const char *str;
+} _policies[] = {
+	{
+	ALLOC_CONTIGUOUS, "contiguous"}, {
+	ALLOC_NORMAL, "normal"}, {
+	ALLOC_ANYWHERE, "anywhere"}, {
+	ALLOC_INHERIT, "inherit"}
+};
+
+static int _num_policies = sizeof(_policies) / sizeof(*_policies);
+
+uint64_t units_to_bytes(const char *units, char *unit_type)
+{
+	char *ptr = NULL;
+	uint64_t v;
+
+	if (isdigit(*units)) {
+		v = (uint64_t) strtod(units, &ptr);
+		if (ptr == units)
+			return 0;
+		units = ptr;
+	} else
+		v = 1;
+
+	if (v == 1)
+		*unit_type = *units;
+	else
+		*unit_type = 'U';
+
+	switch (*units) {
+	case 'h':
+	case 'H':
+		v = UINT64_C(1);
+		*unit_type = *units;
+		break;
+	case 's':
+		v *= SECTOR_SIZE;
+		break;
+	case 'b':
+	case 'B':
+		v *= UINT64_C(1);
+		break;
+#define KILO UINT64_C(1024)
+	case 'k':
+		v *= KILO;
+		break;
+	case 'm':
+		v *= KILO * KILO;
+		break;
+	case 'g':
+		v *= KILO * KILO * KILO;
+		break;
+	case 't':
+		v *= KILO * KILO * KILO * KILO;
+		break;
+#undef KILO
+#define KILO UINT64_C(1000)
+	case 'K':
+		v *= KILO;
+		break;
+	case 'M':
+		v *= KILO * KILO;
+		break;
+	case 'G':
+		v *= KILO * KILO * KILO;
+		break;
+	case 'T':
+		v *= KILO * KILO * KILO * KILO;
+		break;
+#undef KILO
+	default:
+		return 0;
+	}
+
+	if (*(units + 1))
+		return 0;
+
+	return v;
+}
+
+const char *get_alloc_string(alloc_policy_t alloc)
+{
+	int i;
+
+	for (i = 0; i < _num_policies; i++)
+		if (_policies[i].alloc == alloc)
+			return _policies[i].str;
+
+	return NULL;
+}
+
+alloc_policy_t get_alloc_from_string(const char *str)
+{
+	int i;
+
+	for (i = 0; i < _num_policies; i++)
+		if (!strcmp(_policies[i].str, str))
+			return _policies[i].alloc;
+
+	/* Special case for old metadata */
+	if(!strcmp("next free", str))
+		return ALLOC_NORMAL;
+
+	log_error("Unrecognised allocation policy %s", str);
+	return ALLOC_INVALID;
+}
+
+/* Size supplied in sectors */
+const char *display_size(struct cmd_context *cmd, uint64_t size, size_len_t sl)
 {
 	int s;
-	ulong byte = 1024 * 1024 * 1024;
+	int suffix = 1, precision;
+	uint64_t byte = UINT64_C(0);
+	uint64_t units = UINT64_C(1024);
 	char *size_buf = NULL;
-	char *size_str[][2] = {
-		{"Terabyte", "TB"},
-		{"Gigabyte", "GB"},
-		{"Megabyte", "MB"},
-		{"Kilobyte", "KB"},
-		{"", ""}
+	const char *size_str[][3] = {
+		{" Terabyte", " TB", "T"},
+		{" Gigabyte", " GB", "G"},
+		{" Megabyte", " MB", "M"},
+		{" Kilobyte", " KB", "K"},
+		{"", "", ""},
+		{" Byte    ", " B ", "B"},
+		{" Units   ", " Un", "U"},
+		{" Sectors ", " Se", "S"},
+		{"         ", "   ", " "},
 	};
 
-	if (!(size_buf = dbg_malloc(SIZE_BUF))) {
+	if (!(size_buf = dm_pool_alloc(cmd->mem, SIZE_BUF))) {
 		log_error("no memory for size display buffer");
-		return NULL;
+		return "";
 	}
 
-	if (size == 0LL)
-		sprintf(size_buf, "0");
-	else {
+	suffix = cmd->current_settings.suffix;
+
+	for (s = 0; s < 8; s++)
+		if (toupper((int) cmd->current_settings.unit_type) ==
+		    *size_str[s][2])
+			break;
+
+	if (size == UINT64_C(0)) {
+		sprintf(size_buf, "0%s", suffix ? size_str[s][sl] : "");
+		return size_buf;
+	}
+
+	if (s < 8) {
+		byte = cmd->current_settings.unit_factor;
+		size *= UINT64_C(512);
+	} else {
+		size /= 2;
+		suffix = 1;
+		if (cmd->current_settings.unit_type == 'H')
+			units = UINT64_C(1000);
+		else
+			units = UINT64_C(1024);
+		byte = units * units * units;
 		s = 0;
 		while (size_str[s] && size < byte)
-			s++, byte /= 1024;
-		snprintf(size_buf, SIZE_BUF - 1,
-			 "%.2f %s", (float) size / byte, size_str[s][sl]);
+			s++, byte /= units;
 	}
 
-	/* Caller to deallocate */
+	/* FIXME Make precision configurable */
+	switch(toupper((int) cmd->current_settings.unit_type)) {
+	case 'B':
+	case 'S':
+		precision = 0;
+		break;
+	default:
+		precision = 2;
+	}
+
+	snprintf(size_buf, SIZE_BUF - 1, "%.*f%s", precision,
+		 (double) size / byte, suffix ? size_str[s][sl] : "");
+
 	return size_buf;
 }
 
@@ -75,7 +212,7 @@ void pvdisplay_colons(struct physical_volume *pv)
 		return;
 	}
 
-	log_print("%s:%s:%" PRIu64 ":-1:%u:%u:-1:%" PRIu64 ":%u:%u:%u:%s",
+	log_print("%s:%s:%" PRIu64 ":-1:%u:%u:-1:%" PRIu32 ":%u:%u:%u:%s",
 		  dev_name(pv->dev), pv->vg_name, pv->size,
 		  /* FIXME pv->pv_number, Derive or remove? */
 		  pv->status,	/* FIXME Support old or new format here? */
@@ -89,12 +226,14 @@ void pvdisplay_colons(struct physical_volume *pv)
 	return;
 }
 
-void pvdisplay_full(struct physical_volume *pv)
+/* FIXME Include label fields */
+void pvdisplay_full(struct cmd_context *cmd, struct physical_volume *pv,
+		    void *handle)
 {
 	char uuid[64];
-	char *size, *size1;	/*, *size2; */
+	const char *size;
 
-	uint64_t pe_free;
+	uint32_t pe_free;
 
 	if (!pv)
 		return;
@@ -104,49 +243,30 @@ void pvdisplay_full(struct physical_volume *pv)
 		return;
 	}
 
-	/* Compat */
-	if(!pv->pe_size) {
-		size = display_size((uint64_t) pv->size / 2, SIZE_SHORT);
-		log_print("\"%s\" is a new physical volume of %s", dev_name(pv->dev), size);
-		dbg_free(size);
-		return;
-	}
-
-	set_cmd_name("");
-	init_msg_prefix("");
-
-/****** FIXME Do we really need this conditional here? */
 	log_print("--- %sPhysical volume ---", pv->pe_size ? "" : "NEW ");
 	log_print("PV Name               %s", dev_name(pv->dev));
 	log_print("VG Name               %s%s", pv->vg_name,
 		  pv->status & EXPORTED_VG ? " (exported)" : "");
 
-	size = display_size((uint64_t) pv->size / 2, SIZE_SHORT);
+	size = display_size(cmd, (uint64_t) pv->size, SIZE_SHORT);
 	if (pv->pe_size && pv->pe_count) {
-		size1 = display_size((pv->size - pv->pe_count * pv->pe_size)
-				     / 2, SIZE_SHORT);
 
-/******** FIXME display LVM on-disk data size - static for now...
-		size2 = display_size(pv->size / 2, SIZE_SHORT);
+/******** FIXME display LVM on-disk data size
+		size2 = display_size(pv->size, SIZE_SHORT);
 ********/
 
-		log_print("PV Size               %s [%llu secs]" " / not "
-			  "usable %s [LVM: %s]",
-			  size, (uint64_t) pv->size, size1, "151 KB");
-	/* , size2);    */
+		log_print("PV Size               %s" " / not usable %s",	/*  [LVM: %s]", */
+			  size,
+			  display_size(cmd, (pv->size -
+				       (uint64_t) pv->pe_count * pv->pe_size),
+				       SIZE_SHORT));
 
-		dbg_free(size1);
-		/* dbg_free(size2); */
 	} else
 		log_print("PV Size               %s", size);
-	dbg_free(size);
 
-/******** FIXME anytime this *isn't* available? */
-	log_print("PV Status             available");
-
-/*********FIXME Anything use this?
-	log_print("PV#                   %u", pv->pv_number);
-**********/
+	/* PV number not part of LVM2 design
+	   log_print("PV#                   %u", pv->pv_number);
+	 */
 
 	pe_free = pv->pe_count - pv->pe_alloc_count;
 	if (pv->pe_count && (pv->status & ALLOCATABLE_PV))
@@ -155,18 +275,13 @@ void pvdisplay_full(struct physical_volume *pv)
 	else
 		log_print("Allocatable           NO");
 
-/*********FIXME Erm...where is this stored?
-	log_print("Cur LV                %u", vg->lv_count);
-*/
-	log_print("PE Size (KByte)       %" PRIu64, pv->pe_size / 2);
+	/* LV count is no longer available when displaying PV
+	   log_print("Cur LV                %u", vg->lv_count);
+	 */
+	log_print("PE Size (KByte)       %" PRIu32, pv->pe_size / 2);
 	log_print("Total PE              %u", pv->pe_count);
-	log_print("Free PE               %" PRIu64, pe_free);
+	log_print("Free PE               %" PRIu32, pe_free);
 	log_print("Allocated PE          %u", pv->pe_alloc_count);
-
-#ifdef LVM_FUTURE
-	printf("Stale PE              %u", pv->pe_stale);
-#endif
-
 	log_print("PV UUID               %s", *uuid ? uuid : "none");
 	log_print(" ");
 
@@ -174,13 +289,21 @@ void pvdisplay_full(struct physical_volume *pv)
 }
 
 int pvdisplay_short(struct cmd_context *cmd, struct volume_group *vg,
-		    struct physical_volume *pv)
+		    struct physical_volume *pv, void *handle)
 {
+	char uuid[64];
+
 	if (!pv)
 		return 0;
 
+	if (!id_write_format(&pv->id, uuid, sizeof(uuid))) {
+		stack;
+		return 0;
+	}
+
 	log_print("PV Name               %s     ", dev_name(pv->dev));
 	/* FIXME  pv->pv_number); */
+	log_print("PV UUID               %s", *uuid ? uuid : "none");
 	log_print("PV Status             %sallocatable",
 		  (pv->status & ALLOCATABLE_PV) ? "" : "NOT ");
 	log_print("Total PE / Free PE    %u / %u",
@@ -190,13 +313,11 @@ int pvdisplay_short(struct cmd_context *cmd, struct volume_group *vg,
 	return 0;
 }
 
-
-
 void lvdisplay_colons(struct logical_volume *lv)
 {
 	int inkernel;
-	struct dm_info info;
-	inkernel = lv_info(lv, &info) && info.exists;
+	struct lvinfo info;
+	inkernel = lv_info(lv->vg->cmd, lv, &info, 1) && info.exists;
 
 	log_print("%s%s/%s:%s:%d:%d:-1:%d:%" PRIu64 ":%d:-1:%d:%d:%d:%d",
 		  lv->vg->cmd->dev_dir,
@@ -207,35 +328,26 @@ void lvdisplay_colons(struct logical_volume *lv)
 		  /* FIXME lv->lv_number,  */
 		  inkernel ? info.open_count : 0, lv->size, lv->le_count,
 		  /* FIXME Add num allocated to struct! lv->lv_allocated_le, */
-		  ((lv->status & ALLOC_STRICT) +
-		   (lv->status & ALLOC_CONTIGUOUS) * 2), lv->read_ahead,
+		  (lv->alloc == ALLOC_CONTIGUOUS ? 2 : 0), lv->read_ahead,
 		  inkernel ? info.major : -1, inkernel ? info.minor : -1);
 	return;
 }
 
-int lvdisplay_full(struct cmd_context *cmd, struct logical_volume *lv)
+int lvdisplay_full(struct cmd_context *cmd, struct logical_volume *lv,
+		   void *handle)
 {
-	char *size;
-	uint32_t alloc;
-	struct dm_info info;
-	int inkernel;
+	struct lvinfo info;
+	int inkernel, snap_active = 0;
 	char uuid[64];
-	struct snapshot *snap;
-	struct stripe_segment *seg;
-	struct list *lvseg;
-	struct logical_volume *origin;
-	float snap_percent;
-	int snap_active;
+	struct lv_segment *snap_seg = NULL;
+	float snap_percent;	/* fused, fsize; */
 
 	if (!id_write_format(&lv->lvid.id[1], uuid, sizeof(uuid))) {
 		stack;
 		return 0;
 	}
 
-	inkernel = lv_info(lv, &info) && info.exists;
-
-	set_cmd_name("");
-	init_msg_prefix("");
+	inkernel = lv_info(cmd, lv, &info, 1) && info.exists;
 
 	log_print("--- Logical volume ---");
 
@@ -243,161 +355,88 @@ int lvdisplay_full(struct cmd_context *cmd, struct logical_volume *lv)
 		  lv->vg->name, lv->name);
 	log_print("VG Name                %s", lv->vg->name);
 
-/* Not in LVM1 format 
 	log_print("LV UUID                %s", uuid);
-**/
+
 	log_print("LV Write Access        %s",
 		  (lv->status & LVM_WRITE) ? "read/write" : "read only");
 
-	/* see if this LV is an origin for a snapshot */
-	if ((snap = find_origin(lv))) {
-		struct list *slh, *snaplist = find_snapshots(lv);
-		
+	if (lv_is_origin(lv)) {
 		log_print("LV snapshot status     source of");
-		list_iterate(slh, snaplist) {
-			snap = list_item(slh, struct snapshot_list)->snapshot;
-			snap_active = lv_snapshot_percentage(snap->cow, 
-							     &snap_percent);
-			log_print("                       %s%s/%s [%s]",
-				 lv->vg->cmd->dev_dir, lv->vg->name,
-				 snap->cow->name,
-				 (snap_active > 0) ? "active" : "INACTIVE");
-		}
-		/* reset so we don't try to use this to display other snapshot
- 		 * related information. */
-		snap = NULL;
-		snap_active = 0;
-	}
-	/* Check to see if this LV is a COW target for a snapshot */
-	else if ((snap = find_cow(lv))) {
-		snap_active = lv_snapshot_percentage(lv, &snap_percent);
-		log_print("LV snapshot status     %s destination for %s%s/%s",
-		 	  (snap_active > 0) ? "active" : "INACTIVE", 
-			  lv->vg->cmd->dev_dir, lv->vg->name,
-			  snap->origin->name);
-	}
 
+		list_iterate_items_gen(snap_seg, &lv->snapshot_segs,
+				       origin_list) {
+			if (inkernel &&
+			    (snap_active = lv_snapshot_percent(snap_seg->cow,
+							       &snap_percent)))
+				if (snap_percent < 0 || snap_percent >= 100)
+					snap_active = 0;
+			log_print("                       %s%s/%s [%s]",
+				  lv->vg->cmd->dev_dir, lv->vg->name,
+				  snap_seg->cow->name,
+				  (snap_active > 0) ? "active" : "INACTIVE");
+		}
+		snap_seg = NULL;
+	} else if ((snap_seg = find_cow(lv))) {
+		if (inkernel &&
+		    (snap_active = lv_snapshot_percent(snap_seg->cow,
+						       &snap_percent)))
+			if (snap_percent < 0 || snap_percent >= 100)
+				snap_active = 0;
+
+		log_print("LV snapshot status     %s destination for %s%s/%s",
+			  (snap_active > 0) ? "active" : "INACTIVE",
+			  lv->vg->cmd->dev_dir, lv->vg->name,
+			  snap_seg->origin->name);
+	}
 
 	if (inkernel && info.suspended)
 		log_print("LV Status              suspended");
 	else
 		log_print("LV Status              %savailable",
-			  !inkernel || (snap && (snap_active < 1)) 
-			    ?  "NOT " : "");
+			  inkernel ? "" : "NOT ");
 
-/********* FIXME lv_number - not sure that we're going to bother with this
+/********* FIXME lv_number
     log_print("LV #                   %u", lv->lv_number + 1);
 ************/
 
-/* LVM1 lists the number of LVs open in this field, therefore, so do we. */
-	log_print("# open                 %u", lvs_in_vg_opened(lv->vg));
-
-/* We're not going to use this count ATM, 'cause it's not what LVM1 does 
 	if (inkernel)
 		log_print("# open                 %u", info.open_count);
-*/
-/********
-#ifdef LVM_FUTURE
-    printf("Mirror copies          %u\n", lv->lv_mirror_copies);
-    printf("Consistency recovery   ");
-    if (lv->lv_recovery | LV_BADBLOCK_ON)
-	printf("bad blocks\n");
-    else
-	printf("none\n");
-    printf("Schedule               %u\n", lv->lv_schedule);
-#endif
-********/
 
-	if(snap)
-		origin = snap->origin;
-	else
-		origin = lv;
-	
-	size = display_size(origin->size / 2, SIZE_SHORT);
-	log_print("LV Size                %s", size);
-	dbg_free(size);
+	log_print("LV Size                %s",
+		  display_size(cmd,
+			       snap_seg ? snap_seg->origin->size : lv->size,
+			       SIZE_SHORT));
 
-	log_print("Current LE             %u", origin->le_count);
-	
-/********** FIXME allocation - is there anytime the allocated LEs will not
- * equal the current LEs? */
-	log_print("Allocated LE           %u", origin->le_count);
-/**********/
-	
+	log_print("Current LE             %u",
+		  snap_seg ? snap_seg->origin->le_count : lv->le_count);
 
-	list_iterate(lvseg, &lv->segments) {
-		seg = list_item(lvseg, struct stripe_segment);
-		if(seg->stripes > 1) {
-			log_print("Stripes                %u", seg->stripes);
-			log_print("Stripe size (KByte)    %u",
-				  seg->stripe_size/2);
-		}
-		/* only want the first segment for LVM1 format output */
-		break;
+	if (snap_seg) {
+		log_print("COW-table size         %s",
+			  display_size(cmd, (uint64_t) lv->size, SIZE_SHORT));
+		log_print("COW-table LE           %u", lv->le_count);
+
+		if (snap_active)
+			log_print("Allocated to snapshot  %.2f%% ", snap_percent);	
+
+		log_print("Snapshot chunk size    %s",
+			  display_size(cmd, (uint64_t) snap_seg->chunk_size,
+				       SIZE_SHORT));
 	}
 
-	if(snap) {
-		float fused, fsize;
-		if(snap_percent == -1)
-			snap_percent=100;
-
-		size = display_size(snap->chunk_size / 2, SIZE_SHORT);
-		log_print("snapshot chunk size    %s", size);
-		dbg_free(size);
-
-		size = display_size(lv->size / 2, SIZE_SHORT);
-		sscanf(size, "%f", &fsize);
-		fused = fsize * ( snap_percent / 100 );
-		log_print("Allocated to snapshot  %2.2f%% [%2.2f/%s]",
-			  snap_percent, fused, size); 
-		dbg_free(size);
-
-		/* FIXME: Think this'll make them wonder?? */
-		log_print("Allocated to COW-table %s", "00.01 KB");
-	}
-
-/** Not in LVM1 format output **
 	log_print("Segments               %u", list_size(&lv->segments));
-***/
 
 /********* FIXME Stripes & stripesize for each segment
 	log_print("Stripe size (KByte)    %u", lv->stripesize / 2);
 ***********/
 
-/**************
-#ifdef LVM_FUTURE
-    printf("Bad block             ");
-    if (lv->lv_badblock == LV_BADBLOCK_ON)
-	printf("on\n");
-    else
-	printf("off\n");
-#endif
-***************/
-
-	/* FIXME next free == ALLOC_SIMPLE */
-	alloc = lv->status & (ALLOC_STRICT | ALLOC_CONTIGUOUS);
-	log_print("Allocation             %s%s%s%s",
-		  !(alloc & (ALLOC_STRICT | ALLOC_CONTIGUOUS)) ? "next free" :
-		  "", (alloc == ALLOC_STRICT) ? "strict" : "",
-		  (alloc == ALLOC_CONTIGUOUS) ? "contiguous" : "",
-		  (alloc ==
-		   (ALLOC_STRICT | ALLOC_CONTIGUOUS)) ? "strict/contiguous" :
-		  "");
-
+	log_print("Allocation             %s", get_alloc_string(lv->alloc));
 	log_print("Read ahead sectors     %u", lv->read_ahead);
 
-	if (lv->status & FIXED_MINOR)
+	if (lv->status & FIXED_MINOR) {
+		if (lv->major >= 0)
+			log_print("Persistent major       %d", lv->major);
 		log_print("Persistent minor       %d", lv->minor);
-
-/****************
-#ifdef LVM_FUTURE
-    printf("IO Timeout (seconds)   ");
-    if (lv->lv_io_timeout == 0)
-	printf("default\n\n");
-    else
-	printf("%lu\n\n", lv->lv_io_timeout);
-#endif
-*************/
+	}
 
 	if (inkernel)
 		log_print("Block device           %d:%d", info.major,
@@ -408,45 +447,50 @@ int lvdisplay_full(struct cmd_context *cmd, struct logical_volume *lv)
 	return 0;
 }
 
-void _display_stripe(struct stripe_segment *seg, int s, const char *pre)
+void display_stripe(const struct lv_segment *seg, uint32_t s, const char *pre)
 {
-	uint32_t len = seg->len / seg->stripes;
+	switch (seg_type(seg, s)) {
+	case AREA_PV:
+		/* FIXME Re-check the conditions for 'Missing' */
+		log_print("%sPhysical volume\t%s", pre,
+			  seg_pv(seg, s) ?
+			  dev_name(seg_dev(seg, s)) :
+			    "Missing");
 
-	log_print("%sphysical volume\t%s", pre,
-		  seg->area[s].pv ? dev_name(seg->area[s].pv->dev) : "Missing");
+		if (seg_pv(seg, s))
+			log_print("%sPhysical extents\t%d to %d", pre,
+				  seg_pe(seg, s),
+				  seg_pe(seg, s) + seg->area_len - 1);
+		break;
+	case AREA_LV:
+		log_print("%sLogical volume\t%s", pre,
+			  seg_lv(seg, s) ?
+			  seg_lv(seg, s)->name : "Missing");
 
-	if (seg->area[s].pv)
-		log_print("%sphysical extents\t%d to %d", pre,
-			  seg->area[s].pe, seg->area[s].pe + len - 1);
+		if (seg_lv(seg, s))
+			log_print("%sLogical extents\t%d to %d", pre,
+				  seg_le(seg, s),
+				  seg_le(seg, s) + seg->area_len - 1);
+		break;
+	case AREA_UNASSIGNED:
+		log_print("%sUnassigned area", pre);
+	}
 }
 
 int lvdisplay_segments(struct logical_volume *lv)
 {
-	int s;
-	struct list *segh;
-	struct stripe_segment *seg;
+	struct lv_segment *seg;
 
 	log_print("--- Segments ---");
 
-	list_iterate(segh, &lv->segments) {
-		seg = list_item(segh, struct stripe_segment);
-
-		log_print("logical extent %d to %d:",
+	list_iterate_items(seg, &lv->segments) {
+		log_print("Logical extent %u to %u:",
 			  seg->le, seg->le + seg->len - 1);
 
-		if (seg->stripes == 1)
-			_display_stripe(seg, 0, "  ");
+		log_print("  Type\t\t%s", seg->segtype->ops->name(seg));
 
-		else {
-			log_print("  stripes\t\t%d", seg->stripes);
-			log_print("  stripe size\t\t%d", seg->stripe_size);
-
-			for (s = 0; s < seg->stripes; s++) {
-				log_print("  stripe %d:", s);
-				_display_stripe(seg, s, "    ");
-			}
-		}
-		log_print(" ");
+		if (seg->segtype->ops->display)
+			seg->segtype->ops->display(seg);
 	}
 
 	log_print(" ");
@@ -461,29 +505,23 @@ void vgdisplay_extents(struct volume_group *vg)
 void vgdisplay_full(struct volume_group *vg)
 {
 	uint32_t access;
-	char *s1;
-	char uuid[64];
 	uint32_t active_pvs;
-	struct list *pvlist;
+	char uuid[64];
 
-	set_cmd_name("");
-	init_msg_prefix("");
-
-	/* get the number of active PVs */
-	if(vg->status & PARTIAL_VG) {
-		active_pvs=0;
-		list_iterate(pvlist, &(vg->pvs)) {
-			active_pvs++;
-		}
-	}
+	if (vg->status & PARTIAL_VG)
+		active_pvs = list_size(&vg->pvs);
 	else
-		active_pvs=vg->pv_count;
+		active_pvs = vg->pv_count;
 
 	log_print("--- Volume group ---");
 	log_print("VG Name               %s", vg->name);
-/****** Not in LVM1 output, so we aren't outputing it here:
 	log_print("System ID             %s", vg->system_id);
-*******/
+	log_print("Format                %s", vg->fid->fmt->name);
+	if (vg->fid->fmt->features & FMT_MDAS) {
+		log_print("Metadata Areas        %d",
+			  list_size(&vg->fid->metadata_areas));
+		log_print("Metadata Sequence No  %d", vg->seqno);
+	}
 	access = vg->status & (LVM_READ | LVM_WRITE);
 	log_print("VG Access             %s%s%s%s",
 		  access == (LVM_READ | LVM_WRITE) ? "read/write" : "",
@@ -491,49 +529,49 @@ void vgdisplay_full(struct volume_group *vg)
 		  access == LVM_WRITE ? "write" : "",
 		  access == 0 ? "error" : "");
 	log_print("VG Status             %s%sresizable",
-		  vg->status & EXPORTED_VG ? "exported/" : "available/",
+		  vg->status & EXPORTED_VG ? "exported/" : "",
 		  vg->status & RESIZEABLE_VG ? "" : "NOT ");
+	/* vg number not part of LVM2 design
+	   log_print ("VG #                  %u\n", vg->vg_number);
+	 */
 	if (vg->status & CLUSTERED) {
 		log_print("Clustered             yes");
 		log_print("Shared                %s",
 			  vg->status & SHARED ? "yes" : "no");
 	}
-/****** FIXME VG # - we aren't implementing this because people should
- * use the UUID for this anyway 
-	log_print("VG #                  %u", vg->vg_number);
-*******/
 	log_print("MAX LV                %u", vg->max_lv);
-	log_print("Cur LV                %u", vg->lv_count);
-        log_print("Open LV               %u", lvs_in_vg_opened(vg));
-        log_print("MAX LV Size           256 TB");
+	log_print("Cur LV                %u", vg->lv_count + vg->snapshot_count);
+	log_print("Open LV               %u", lvs_in_vg_opened(vg));
+/****** FIXME Max LV Size
+      log_print ( "MAX LV Size           %s",
+               ( s1 = display_size ( LVM_LV_SIZE_MAX(vg), SIZE_SHORT)));
+      free ( s1);
+*********/
 	log_print("Max PV                %u", vg->max_pv);
 	log_print("Cur PV                %u", vg->pv_count);
-      	log_print("Act PV                %u", active_pvs);
+	log_print("Act PV                %u", active_pvs);
 
-	s1 =
-	    display_size((uint64_t) vg->extent_count * (vg->extent_size / 2),
-			 SIZE_SHORT);
-	log_print("VG Size               %s", s1);
-	dbg_free(s1);
+	log_print("VG Size               %s",
+		  display_size(vg->cmd,
+			       (uint64_t) vg->extent_count * vg->extent_size,
+			       SIZE_SHORT));
 
-	s1 = display_size(vg->extent_size / 2, SIZE_SHORT);
-	log_print("PE Size               %s", s1);
-	dbg_free(s1);
+	log_print("PE Size               %s",
+		  display_size(vg->cmd, (uint64_t) vg->extent_size,
+			       SIZE_SHORT));
 
 	log_print("Total PE              %u", vg->extent_count);
 
-	s1 = display_size(((uint64_t)
-			   vg->extent_count - vg->free_count) *
-			  (vg->extent_size / 2), SIZE_SHORT);
 	log_print("Alloc PE / Size       %u / %s",
-		  vg->extent_count - vg->free_count, s1);
-	dbg_free(s1);
+		  vg->extent_count - vg->free_count,
+		  display_size(vg->cmd,
+			       ((uint64_t) vg->extent_count - vg->free_count) *
+			       vg->extent_size, SIZE_SHORT));
 
-	s1 =
-	    display_size((uint64_t) vg->free_count * (vg->extent_size / 2),
-			 SIZE_SHORT);
-	log_print("Free  PE / Size       %u / %s", vg->free_count, s1);
-	dbg_free(s1);
+	log_print("Free  PE / Size       %u / %s", vg->free_count,
+		  display_size(vg->cmd,
+			       (uint64_t) vg->free_count * vg->extent_size,
+			       SIZE_SHORT));
 
 	if (!id_write_format(&vg->id, uuid, sizeof(uuid))) {
 		stack;
@@ -548,22 +586,88 @@ void vgdisplay_full(struct volume_group *vg)
 
 void vgdisplay_colons(struct volume_group *vg)
 {
+	uint32_t active_pvs;
+	const char *access;
+	char uuid[64];
+
+	if (vg->status & PARTIAL_VG)
+		active_pvs = list_size(&vg->pvs);
+	else
+		active_pvs = vg->pv_count;
+
+	switch (vg->status & (LVM_READ | LVM_WRITE)) {
+		case LVM_READ | LVM_WRITE:
+			access = "r/w";
+			break;
+		case LVM_READ:
+			access = "r";
+			break;
+		case LVM_WRITE:
+			access = "w";
+			break;
+		default:
+			access = "";
+	}
+
+	if (!id_write_format(&vg->id, uuid, sizeof(uuid))) {
+		stack;
+		return;
+	}
+
+	log_print("%s:%s:%d:-1:%u:%u:%u:-1:%u:%u:%u:%" PRIu64 ":%" PRIu32
+		  ":%u:%u:%u:%s",
+		vg->name,
+		access,
+		vg->status,
+		/* internal volume group number; obsolete */
+		vg->max_lv,
+		vg->lv_count,
+		lvs_in_vg_opened(vg),
+		/* FIXME: maximum logical volume size */
+		vg->max_pv,
+		vg->pv_count,
+		active_pvs,
+		(uint64_t) vg->extent_count * (vg->extent_size / 2),
+		vg->extent_size / 2,
+		vg->extent_count,
+		vg->extent_count - vg->free_count, 
+		vg->free_count,
+		uuid[0] ? uuid : "none");
 	return;
 }
 
 void vgdisplay_short(struct volume_group *vg)
 {
-	char *s1, *s2, *s3;
-	s1 = display_size(vg->extent_count * vg->extent_size / 2, SIZE_SHORT);
-	s2 =
-	    display_size((vg->extent_count - vg->free_count) * vg->extent_size /
-			 2, SIZE_SHORT);
-	s3 = display_size(vg->free_count * vg->extent_size / 2, SIZE_SHORT);
 	log_print("\"%s\" %-9s [%-9s used / %s free]", vg->name,
 /********* FIXME if "open" print "/used" else print "/idle"???  ******/
-		  s1, s2, s3);
-	dbg_free(s1);
-	dbg_free(s2);
-	dbg_free(s3);
+		  display_size(vg->cmd,
+			       (uint64_t) vg->extent_count * vg->extent_size,
+			       SIZE_SHORT),
+		  display_size(vg->cmd,
+			       ((uint64_t) vg->extent_count -
+				vg->free_count) * vg->extent_size,
+			       SIZE_SHORT),
+		  display_size(vg->cmd,
+			       (uint64_t) vg->free_count * vg->extent_size,
+			       SIZE_SHORT));
 	return;
 }
+
+void display_formats(struct cmd_context *cmd)
+{
+	struct format_type *fmt;
+
+	list_iterate_items(fmt, &cmd->formats) {
+		log_print("%s", fmt->name);
+	}
+}
+
+void display_segtypes(struct cmd_context *cmd)
+{
+	struct segment_type *segtype;
+
+	list_iterate_items(segtype, &cmd->segtypes) {
+		log_print("%s", segtype->name);
+	}
+}
+

lib/display/display.h

@@ -1,21 +1,16 @@
 /*
- * Copyright (C) 2001 Sistina Software
+ * Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.
+ * Copyright (C) 2004 Red Hat, Inc. All rights reserved.
  *
- * This LVM library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Library General Public
- * License as published by the Free Software Foundation; either
- * version 2 of the License, or (at your option) any later version.
+ * This file is part of LVM2.
  *
- * This LVM library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Library General Public License for more details.
- *
- * You should have received a copy of the GNU Library General Public
- * License along with this LVM library; if not, write to the Free
- * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
- * MA 02111-1307, USA
+ * This copyrighted material is made available to anyone wishing to use,
+ * modify, copy, or redistribute it subject to the terms and conditions
+ * of the GNU General Public License v.2.
  *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
 
 #ifndef _LVM_DISPLAY_H
@@ -25,23 +20,38 @@
 
 #include <stdint.h>
 
-typedef	enum {SIZE_LONG=0, SIZE_SHORT=1} size_len_t;
+typedef enum { SIZE_LONG = 0, SIZE_SHORT = 1, SIZE_UNIT = 2 } size_len_t;
+
+uint64_t units_to_bytes(const char *units, char *unit_type);
 
 /* Specify size in KB */
-char *display_size(uint64_t size, size_len_t sl);
+const char *display_size(struct cmd_context *cmd, uint64_t size, size_len_t sl);
 char *display_uuid(char *uuidstr);
+void display_stripe(const struct lv_segment *seg, uint32_t s, const char *pre);
 
 void pvdisplay_colons(struct physical_volume *pv);
-void pvdisplay_full(struct physical_volume *pv);
-int pvdisplay_short(struct cmd_context *cmd, struct volume_group *vg, struct physical_volume *pv);
+void pvdisplay_full(struct cmd_context *cmd, struct physical_volume *pv,
+		    void *handle);
+int pvdisplay_short(struct cmd_context *cmd, struct volume_group *vg,
+		    struct physical_volume *pv, void *handle);
 
 void lvdisplay_colons(struct logical_volume *lv);
 int lvdisplay_segments(struct logical_volume *lv);
-int lvdisplay_full(struct cmd_context *cmd, struct logical_volume *lv);
+int lvdisplay_full(struct cmd_context *cmd, struct logical_volume *lv,
+		   void *handle);
 
 void vgdisplay_extents(struct volume_group *vg);
 void vgdisplay_full(struct volume_group *vg);
 void vgdisplay_colons(struct volume_group *vg);
 void vgdisplay_short(struct volume_group *vg);
 
+void display_formats(struct cmd_context *cmd);
+void display_segtypes(struct cmd_context *cmd);
+
+/*
+ * Allocation policy display conversion routines.
+ */
+const char *get_alloc_string(alloc_policy_t alloc);
+alloc_policy_t get_alloc_from_string(const char *str);
+
 #endif

lib/error/errseg.c

@@ -0,0 +1,96 @@
+/*
+ * Copyright (C) 2004 Red Hat, Inc. All rights reserved.
+ *
+ * This file is part of LVM2.
+ *
+ * This copyrighted material is made available to anyone wishing to use,
+ * modify, copy, or redistribute it subject to the terms and conditions
+ * of the GNU General Public License v.2.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#include "lib.h"
+#include "toolcontext.h"
+#include "segtype.h"
+#include "display.h"
+#include "text_export.h"
+#include "text_import.h"
+#include "config.h"
+#include "str_list.h"
+#include "targets.h"
+#include "lvm-string.h"
+#include "activate.h"
+
+static const char *_name(const struct lv_segment *seg)
+{
+	return seg->segtype->name;
+}
+
+static int _merge_segments(struct lv_segment *seg1, struct lv_segment *seg2)
+{
+	seg1->len += seg2->len;
+	seg1->area_len += seg2->area_len;
+
+	return 1;
+}
+
+#ifdef DEVMAPPER_SUPPORT
+static int _add_target_line(struct dev_manager *dm, struct dm_pool *mem,
+				struct config_tree *cft, void **target_state,
+				struct lv_segment *seg,
+				struct dm_tree_node *node, uint64_t len,
+				uint32_t *pvmove_mirror_count)
+{
+	return dm_tree_node_add_error_target(node, len);
+}
+
+static int _target_present(void)
+{
+	static int checked = 0;
+	static int present = 0;
+
+	/* Reported truncated in older kernels */
+	if (!checked &&
+	    (target_present("error", 0) || target_present("erro", 0)))
+		present = 1;
+
+	checked = 1;
+	return present;
+}
+#endif
+
+static void _destroy(const struct segment_type *segtype)
+{
+	dm_free((void *) segtype);
+}
+
+static struct segtype_handler _error_ops = {
+	name:_name,
+	merge_segments:_merge_segments,
+#ifdef DEVMAPPER_SUPPORT
+	add_target_line:_add_target_line,
+	target_present:_target_present,
+#endif
+	destroy:_destroy,
+};
+
+struct segment_type *init_error_segtype(struct cmd_context *cmd)
+{
+	struct segment_type *segtype = dm_malloc(sizeof(*segtype));
+
+	if (!segtype)
+		return_NULL;
+
+	segtype->cmd = cmd;
+	segtype->ops = &_error_ops;
+	segtype->name = "error";
+	segtype->private = NULL;
+	segtype->flags = SEG_CAN_SPLIT | SEG_VIRTUAL | SEG_CANNOT_BE_ZEROED;
+
+	log_very_verbose("Initialised segtype: %s", segtype->name);
+
+	return segtype;
+}

lib/filters/filter-composite.c

@@ -1,12 +1,20 @@
 /*
- * Copyright (C) 2001 Sistina Software (UK) Limited.
+ * Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.  
+ * Copyright (C) 2004 Red Hat, Inc. All rights reserved.
  *
- * This file is released under the LGPL.
+ * This file is part of LVM2.
+ *
+ * This copyrighted material is made available to anyone wishing to use,
+ * modify, copy, or redistribute it subject to the terms and conditions
+ * of the GNU General Public License v.2.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
 
+#include "lib.h"
 #include "filter-composite.h"
-#include "dbg_malloc.h"
-#include "log.h"
 
 #include <stdarg.h>
 
@@ -20,6 +28,8 @@ static int _and_p(struct dev_filter *f, struct device *dev)
 		filters++;
 	}
 
+	log_debug("Using %s", dev_name(dev));
+
 	return 1;
 }
 
@@ -32,39 +42,36 @@ static void _destroy(struct dev_filter *f)
 		filters++;
 	}
 
-	dbg_free(f->private);
-	dbg_free(f);
+	dm_free(f->private);
+	dm_free(f);
 }
 
-struct dev_filter *composite_filter_create(int n, ...)
+struct dev_filter *composite_filter_create(int n, struct dev_filter **filters)
 {
-	struct dev_filter **filters = dbg_malloc(sizeof(*filters) * (n + 1));
-	struct dev_filter *cf;
-	va_list ap;
-	int i;
+	struct dev_filter **filters_copy, *cft;
 
 	if (!filters) {
 		stack;
 		return NULL;
 	}
 
-	if (!(cf = dbg_malloc(sizeof(*cf)))) {
-		stack;
-		dbg_free(filters);
+	if (!(filters_copy = dm_malloc(sizeof(*filters) * (n + 1)))) {
+		log_error("composite filters allocation failed");
 		return NULL;
 	}
 
-	va_start(ap, n);
-	for (i = 0; i < n; i++) {
-		struct dev_filter *f = va_arg(ap, struct dev_filter *);
-		filters[i] = f;
+	memcpy(filters_copy, filters, sizeof(*filters) * n);
+	filters_copy[n] = NULL;
+
+	if (!(cft = dm_malloc(sizeof(*cft)))) {
+		log_error("compsoite filters allocation failed");
+		dm_free(filters_copy);
+		return NULL;
 	}
-	filters[i] = NULL;
-	va_end(ap);
 
-	cf->passes_filter = _and_p;
-	cf->destroy = _destroy;
-	cf->private = filters;
+	cft->passes_filter = _and_p;
+	cft->destroy = _destroy;
+	cft->private = filters_copy;
 
-	return cf;
+	return cft;
 }

lib/filters/filter-composite.h

@@ -1,7 +1,16 @@
 /*
- * Copyright (C) 2001 Sistina Software (UK) Limited.
+ * Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.  
+ * Copyright (C) 2004 Red Hat, Inc. All rights reserved.
  *
- * This file is released under the GPL.
+ * This file is part of LVM2.
+ *
+ * This copyrighted material is made available to anyone wishing to use,
+ * modify, copy, or redistribute it subject to the terms and conditions
+ * of the GNU General Public License v.2.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
 
 #ifndef _LVM_FILTER_COMPOSITE_H
@@ -9,6 +18,6 @@
 
 #include "dev-cache.h"
 
-struct dev_filter *composite_filter_create(int n, ...);
+struct dev_filter *composite_filter_create(int n, struct dev_filter **filters);
 
 #endif

lib/filters/filter-md.c

@@ -0,0 +1,80 @@
+/*
+ * Copyright (C) 2004 Luca Berra
+ *
+ * This file is part of LVM2.
+ *
+ * This copyrighted material is made available to anyone wishing to use,
+ * modify, copy, or redistribute it subject to the terms and conditions
+ * of the GNU Lesser General Public License v.2.1.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#include "lib.h"
+#include "filter-md.h"
+#include "metadata.h"
+
+#ifdef linux
+
+/* Lifted from <linux/raid/md_p.h> because of difficulty including it */
+
+#define MD_SB_MAGIC 0xa92b4efc
+#define MD_RESERVED_BYTES (64 * 1024)
+#define MD_RESERVED_SECTORS (MD_RESERVED_BYTES / 512)
+#define MD_NEW_SIZE_SECTORS(x) ((x & ~(MD_RESERVED_SECTORS - 1)) \
+				- MD_RESERVED_SECTORS)
+
+static int _ignore_md(struct dev_filter *f, struct device *dev)
+{
+	int ret;
+	
+	if (!md_filtering())
+		return 1;
+	
+	ret = dev_is_md(dev, NULL);
+
+	if (ret == 1) {
+		log_debug("%s: Skipping md component device", dev_name(dev));
+		return 0;
+	}
+
+	if (ret < 0) {
+		log_debug("%s: Skipping: error in md component detection",
+			  dev_name(dev));
+		return 0;
+	}
+
+	return 1;
+}
+
+static void _destroy(struct dev_filter *f)
+{
+	dm_free(f);
+}
+
+struct dev_filter *md_filter_create(void)
+{
+	struct dev_filter *f;
+
+	if (!(f = dm_malloc(sizeof(*f)))) {
+		log_error("md filter allocation failed");
+		return NULL;
+	}
+
+	f->passes_filter = _ignore_md;
+	f->destroy = _destroy;
+	f->private = NULL;
+
+	return f;
+}
+
+#else
+
+struct dev_filter *md_filter_create(void)
+{
+	return NULL;
+}
+
+#endif

lib/filters/filter-md.h

@@ -0,0 +1,23 @@
+/*
+ * Copyright (C) 2004 Luca Berra
+ *
+ * This file is part of LVM2.
+ *
+ * This copyrighted material is made available to anyone wishing to use,
+ * modify, copy, or redistribute it subject to the terms and conditions
+ * of the GNU Lesser General Public License v.2.1.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#ifndef _LVM_FILTER_MD_H
+#define _LVM_FILTER_MD_H
+
+#include "dev-cache.h"
+
+struct dev_filter *md_filter_create(void);
+
+#endif
+

lib/filters/filter-persistent.c

@@ -1,24 +1,30 @@
 /*
- * Copyright (C) 2001 Sistina Software (UK) Limited.
+ * Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.  
+ * Copyright (C) 2004 Red Hat, Inc. All rights reserved.
  *
- * This file is released under the LGPL.
+ * This file is part of LVM2.
+ *
+ * This copyrighted material is made available to anyone wishing to use,
+ * modify, copy, or redistribute it subject to the terms and conditions
+ * of the GNU General Public License v.2.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
 
+#include "lib.h"
 #include "config.h"
 #include "dev-cache.h"
-#include "hash.h"
-#include "dbg_malloc.h"
-#include "log.h"
 #include "filter-persistent.h"
 
-#include <sys/types.h>
 #include <sys/stat.h>
 #include <fcntl.h>
 #include <unistd.h>
 
 struct pfilter {
 	char *file;
-	struct hash_table *devices;
+	struct dm_hash_table *devices;
 	struct dev_filter *real;
 };
 
@@ -32,27 +38,36 @@ struct pfilter {
 static int _init_hash(struct pfilter *pf)
 {
 	if (pf->devices)
-		hash_destroy(pf->devices);
+		dm_hash_destroy(pf->devices);
 
-	pf->devices = hash_create(128);
-	return pf->devices ? 1 : 0;
+	if (!(pf->devices = dm_hash_create(128))) {
+		stack;
+		return 0;
+	}
+
+	return 1;
 }
 
 int persistent_filter_wipe(struct dev_filter *f)
 {
 	struct pfilter *pf = (struct pfilter *) f->private;
 
-	hash_wipe(pf->devices);
+	log_verbose("Wiping cache of LVM-capable devices");
+	dm_hash_wipe(pf->devices);
+
+	/* Trigger complete device scan */
+	dev_cache_scan(1);
+
 	return 1;
 }
 
-static int _read_array(struct pfilter *pf, struct config_file *cf,
+static int _read_array(struct pfilter *pf, struct config_tree *cft,
 		       const char *path, void *data)
 {
-	struct config_node *cn;
+	const struct config_node *cn;
 	struct config_value *cv;
 
-	if (!(cn = find_config_node(cf->root, path, '/'))) {
+	if (!(cn = find_config_node(cft->root, path))) {
 		log_very_verbose("Couldn't find %s array in '%s'",
 				 path, pf->file);
 		return 0;
@@ -69,9 +84,11 @@ static int _read_array(struct pfilter *pf, struct config_file *cf,
 			continue;
 		}
 
-		if (!hash_insert(pf->devices, cv->v.str, data))
+		if (!dm_hash_insert(pf->devices, cv->v.str, data))
 			log_verbose("Couldn't add '%s' to filter ... ignoring",
 				    cv->v.str);
+		/* Populate dev_cache ourselves */
+		dev_cache_get(cv->v.str, NULL);
 	}
 	return 1;
 }
@@ -81,41 +98,48 @@ int persistent_filter_load(struct dev_filter *f)
 	struct pfilter *pf = (struct pfilter *) f->private;
 
 	int r = 0;
-	struct config_file *cf;
+	struct config_tree *cft;
 
-	if (!(cf = create_config_file())) {
+	if (!(cft = create_config_tree(pf->file))) {
 		stack;
 		return 0;
 	}
 
-	if (!read_config(cf, pf->file)) {
+	if (!read_config_file(cft)) {
 		stack;
 		goto out;
 	}
 
-	_read_array(pf, cf, "persistent_filter_cache/valid_devices",
+	_read_array(pf, cft, "persistent_filter_cache/valid_devices",
 		    PF_GOOD_DEVICE);
-	_read_array(pf, cf, "persistent_filter_cache/invalid_devices",
-		    PF_BAD_DEVICE);
+	/* We don't gain anything by holding invalid devices */
+	/* _read_array(pf, cft, "persistent_filter_cache/invalid_devices",
+	   PF_BAD_DEVICE); */
 
-	if (hash_get_num_entries(pf->devices))
+	/* Did we find anything? */
+	if (dm_hash_get_num_entries(pf->devices)) {
+		/* We populated dev_cache ourselves */
+		dev_cache_scan(0);
 		r = 1;
+	}
+
+	log_very_verbose("Loaded persistent filter cache from %s", pf->file);
 
       out:
-	destroy_config_file(cf);
+	destroy_config_tree(cft);
 	return r;
 }
 
-static void _write_array(struct pfilter *pf, FILE * fp, const char *path,
+static void _write_array(struct pfilter *pf, FILE *fp, const char *path,
 			 void *data)
 {
 	void *d;
 	int first = 1;
-	struct hash_node *n;
+	struct dm_hash_node *n;
 
-	for (n = hash_get_first(pf->devices); n;
-	     n = hash_get_next(pf->devices, n)) {
-		d = hash_get_data(pf->devices, n);
+	for (n = dm_hash_get_first(pf->devices); n;
+	     n = dm_hash_get_next(pf->devices, n)) {
+		d = dm_hash_get_data(pf->devices, n);
 
 		if (d != data)
 			continue;
@@ -127,7 +151,7 @@ static void _write_array(struct pfilter *pf, FILE * fp, const char *path,
 			first = 0;
 		}
 
-		fprintf(fp, "\t\t\"%s\"", hash_get_key(pf->devices, n));
+		fprintf(fp, "\t\t\"%s\"", dm_hash_get_key(pf->devices, n));
 	}
 
 	if (!first)
@@ -142,16 +166,23 @@ int persistent_filter_dump(struct dev_filter *f)
 
 	FILE *fp;
 
-	if (!hash_get_num_entries(pf->devices)) {
+	if (!dm_hash_get_num_entries(pf->devices)) {
 		log_very_verbose("Internal persistent device cache empty "
 				 "- not writing to %s", pf->file);
 		return 0;
 	}
+	if (!dev_cache_has_scanned()) {
+		log_very_verbose("Device cache incomplete - not writing "
+				 "to %s", pf->file);
+		return 0;
+	}
+
 	log_very_verbose("Dumping persistent device cache to %s", pf->file);
 
 	fp = fopen(pf->file, "w");
 	if (!fp) {
-		log_sys_error("fopen", pf->file);
+		if (errno != EROFS)
+			log_sys_error("fopen", pf->file);
 		return 0;
 	}
 
@@ -159,7 +190,8 @@ int persistent_filter_dump(struct dev_filter *f)
 	fprintf(fp, "persistent_filter_cache {\n");
 
 	_write_array(pf, fp, "valid_devices", PF_GOOD_DEVICE);
-	_write_array(pf, fp, "invalid_devices", PF_BAD_DEVICE);
+	/* We don't gain anything by remembering invalid devices */
+	/* _write_array(pf, fp, "invalid_devices", PF_BAD_DEVICE); */
 
 	fprintf(fp, "}\n");
 	fclose(fp);
@@ -169,32 +201,31 @@ int persistent_filter_dump(struct dev_filter *f)
 static int _lookup_p(struct dev_filter *f, struct device *dev)
 {
 	struct pfilter *pf = (struct pfilter *) f->private;
-	void *l = hash_lookup(pf->devices, dev_name(dev));
+	void *l = dm_hash_lookup(pf->devices, dev_name(dev));
 	struct str_list *sl;
-	struct list *ah;
 
 	if (!l) {
 		l = pf->real->passes_filter(pf->real, dev) ?
 		    PF_GOOD_DEVICE : PF_BAD_DEVICE;
 
-		list_iterate(ah, &dev->aliases) {
-			sl = list_item(ah, struct str_list);
-			hash_insert(pf->devices, sl->str, l);
-		}
-	}
+		list_iterate_items(sl, &dev->aliases)
+			dm_hash_insert(pf->devices, sl->str, l);
 
-	return l == PF_GOOD_DEVICE;
+	} else if (l == PF_BAD_DEVICE)
+			log_debug("%s: Skipping (cached)", dev_name(dev));
+
+	return (l == PF_BAD_DEVICE) ? 0 : 1;
 }
 
 static void _destroy(struct dev_filter *f)
 {
 	struct pfilter *pf = (struct pfilter *) f->private;
 
-	hash_destroy(pf->devices);
-	dbg_free(pf->file);
+	dm_hash_destroy(pf->devices);
+	dm_free(pf->file);
 	pf->real->destroy(pf->real);
-	dbg_free(pf);
-	dbg_free(f);
+	dm_free(pf);
+	dm_free(f);
 }
 
 struct dev_filter *persistent_filter_create(struct dev_filter *real,
@@ -203,13 +234,13 @@ struct dev_filter *persistent_filter_create(struct dev_filter *real,
 	struct pfilter *pf;
 	struct dev_filter *f = NULL;
 
-	if (!(pf = dbg_malloc(sizeof(*pf)))) {
+	if (!(pf = dm_malloc(sizeof(*pf)))) {
 		stack;
 		return NULL;
 	}
 	memset(pf, 0, sizeof(*pf));
 
-	if (!(pf->file = dbg_malloc(strlen(file) + 1))) {
+	if (!(pf->file = dm_malloc(strlen(file) + 1))) {
 		stack;
 		goto bad;
 	}
@@ -221,7 +252,7 @@ struct dev_filter *persistent_filter_create(struct dev_filter *real,
 		goto bad;
 	}
 
-	if (!(f = dbg_malloc(sizeof(*f)))) {
+	if (!(f = dm_malloc(sizeof(*f)))) {
 		stack;
 		goto bad;
 	}
@@ -233,10 +264,10 @@ struct dev_filter *persistent_filter_create(struct dev_filter *real,
 	return f;
 
       bad:
-	dbg_free(pf->file);
+	dm_free(pf->file);
 	if (pf->devices)
-		hash_destroy(pf->devices);
-	dbg_free(pf);
-	dbg_free(f);
+		dm_hash_destroy(pf->devices);
+	dm_free(pf);
+	dm_free(f);
 	return NULL;
 }