A setgeometry implementation. [untested]

fix dmeventd build

COPYING

@@ -0,0 +1,340 @@
+		    GNU GENERAL PUBLIC LICENSE
+		       Version 2, June 1991
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+ Copyright (C) 1989, 1991 Free Software Foundation, Inc.
+     59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
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COPYING.LIB

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+		  GNU LIBRARY GENERAL PUBLIC LICENSE
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+
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+
+    <one line to give the library's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This 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 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 library; if not, write to the Free
+    Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
+    MA 02111-1307, USA
+
+Also add information on how to contact you by electronic and paper mail.
+
+You should also get your employer (if you work as a programmer) or your
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+
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+
+  <signature of Ty Coon>, 1 April 1990
+  Ty Coon, President of Vice
+
+That's all there is to it!

INSTALL

@@ -0,0 +1,45 @@
+LVM2 installation
+=================
+
+1) Install device-mapper
+
+   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 
+   and libdevmapper.so should be present.
+
+   The device-mapper is available from:
+     ftp://ftp.sistina.com/pub/LVM2/device-mapper/
+
+
+2) Generate custom makefiles.
+
+   Run the 'configure' script from the top directory.
+
+   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.
+
+   Run 'make install' from the top directory.
+
+
+4) Create a configuration file
+
+   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 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.
+

Makefile.in

@@ -1,26 +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 += 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: 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

@@ -1,2 +1,23 @@
-This is pretty much empty so far...if you can't see subdirectories,
-try 'cvs -f update'
+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 WHATS_NEW file.
+Installation instructions are in INSTALL.
+
+There is no warranty - see COPYING and COPYING.LIB.
+
+Tarballs are available from:
+  ftp://sources.redhat.com/pub/lvm2/
+  ftp://sources.redhat.com/pub/dm/
+
+To access the CVS tree use:
+  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.
+  linux-lvm@redhat.com
+  Subscribe from https://www.redhat.com/mailman/listinfo/linux-lvm
+

VERSION

@@ -0,0 +1 @@
+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
@@ -32,63 +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)
 
-dnl -- Where the linux src tree is
-AC_ARG_WITH(kernel_dir,
-  [  --with-kernel_dir=DIR   linux kernel source in DIR [/usr/src/linux]],
-  [ kernel_dir="$withval" ],
-  [ kernel_dir=/usr/src/linux ])
+if test x$GROUP != x; then
+	GROUP="-g $GROUP"
+fi
 
-AC_ARG_ENABLE(jobs, [  --enable-jobs=NUM       Number of jobs to run simultaneously], JOBS=-j$enableval, JOBS=)
+################################################################################
+dnl -- LVM1 tool fallback option
+AC_MSG_CHECKING(whether to enable lvm1 fallback)
+AC_ARG_ENABLE(lvm1_fallback, [  --enable-lvm1_fallback  Use this to fall back and use LVM1 binaries if
+                          device-mapper is missing from the kernel],  LVM1_FALLBACK=$enableval, LVM1_FALLBACK=no)
+AC_MSG_RESULT($LVM1_FALLBACK)
 
-dnl Enables staticly linked tools
-AC_ARG_ENABLE(static_link, [  --enable-static_link    Use this to link the tools to the liblvm library
+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(
@@ -101,11 +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$READLINE = xyes; then
 	AC_CHECK_LIB(readline, readline, ,
 		AC_MSG_ERROR(
@@ -116,26 +454,172 @@ support with --disable-readline or download and install readline from:
 Note: if you are using precompiled packages you will also need the development
 package as well (which may be called readline-devel or something similar).
 )
-		exit
 	)
+	AC_CHECK_FUNC(rl_completion_matches, CFLAGS="$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(kernel_dir)
+AC_SUBST(LVM1)
+AC_SUBST(POOL)
+AC_SUBST(SNAPSHOTS)
+AC_SUBST(MIRRORS)
 AC_SUBST(OWNER)
 AC_SUBST(GROUP)
-dnl First and last lines should not contain files to generate in order to 
-dnl keep utility scripts running properly
+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)
+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

@@ -0,0 +1,82 @@
+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)
+
+ -- Andres Salomon <dilinger@mp3revolution.net>  Sun, 12 May 2002 04:39:06 -0500
+
+lvm2 (0.95.05-2) unstable; urgency=low
+
+  * Use ${shlibs:Depends} in Depends.
+  * Get rid of postinst/postrm scripts, use debhelper's init script instead.
+  * Add Conflicts against lvm10, lvm-common.
+  * Fix endian issues on big-endian machines.
+
+ -- Andres Salomon <dilinger@mp3revolution.net>  Thu,  2 May 2002 23:53:53 -0500
+
+lvm2 (0.95.05-1) unstable; urgency=low
+
+  * New release (Beta2).
+
+ -- Andres Salomon <dilinger@mp3revolution.net>  Thu, 25 Apr 2002 00:37:41 -0500
+
+lvm2 (0.95.04cvs20020306-1) unstable; urgency=low
+
+  * CVS updated.
+  * Convert from debian native package.
+
+ -- Andres Salomon <dilinger@mp3revolution.net>  Wed,  6 Mar 2002 00:43:21 -0500
+
+lvm2 (0.95.04cvs20020304) unstable; urgency=low
+
+  * CVS updated.
+  * Enhance init script; create devmapper control device, etc.
+  * Add dmsetup as a suggestion.
+  * Add /etc/lvm/lvm.conf conffile.
+  * Add undocumented(7) for the commands missing manpages.
+  
+ -- Andres Salomon <dilinger@mp3revolution.net>  Mon,  4 Mar 2002 04:51:26 -0500
+
+lvm2 (0.95.02cvs20020220) unstable; urgency=low
+
+  * Initial Release.
+
+ -- Andres Salomon <dilinger@mp3revolution.net>  Wed, 20 Feb 2002 03:17:25 -0500
+

debian/control

@@ -0,0 +1,24 @@
+Source: lvm2
+Section: admin
+Priority: optional
+Maintainer: Andres Salomon <dilinger@mp3revolution.net>
+Build-Depends: debhelper (>> 3.0.0), libdevmapper-dev (>= 0.96.04), libreadline4-dev
+Standards-Version: 3.5.8.0
+
+Package: lvm2
+Architecture: any
+Depends: ${shlibs:Depends}
+Conflicts: lvm10, lvm-common
+Replaces: lvm10, lvm-common
+Provides: lvm-binaries
+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

@@ -0,0 +1,25 @@
+This package was debianized by Andres Salomon <dilinger@mp3revolution.net> on
+Wed, 20 Feb 2002 03:17:25 -0500.
+
+It was downloaded from http://www.sistina.com/products_lvm.htm
+
+Upstream Author: LVM Development Team
+
+Copyright (c) 2001-2002 LVM Development Team
+
+LVM2 is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2 of the License, or
+(at your option) any later version.
+
+LVM2 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 General Public License for more details.
+
+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
+
+On Debian systems, the full text of the GPL can be found in
+/usr/share/common-licenses/GPL

debian/dirs

@@ -0,0 +1,4 @@
+etc/lvm
+usr/share/man/man5
+usr/share/man/man8
+sbin

debian/docs

@@ -0,0 +1,5 @@
+BUGS
+README
+VERSION
+WHATS_NEW
+doc/*

debian/init.d

@@ -0,0 +1,64 @@
+#! /bin/sh
+#
+# lvm2		This script handles LVM2 initialization/shutdown.
+#
+#		Written by Andres Salomon <dilinger@mp3revolution.net>.
+#
+
+PATH=/sbin:/bin:/usr/sbin:/usr/bin
+NAME=lvm2
+DESC=LVM
+
+test -x /sbin/vgchange || exit 0
+modprobe dm-mod >/dev/null 2>&1
+
+# Create necessary files in /dev for device-mapper
+create_devfiles() {
+	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//')
+
+	if test ! -d $DIR; then
+		mkdir --mode=755 $DIR >/dev/null 2>&1
+	fi
+
+	if test ! -c $FILE -a ! -z "$minor"; then
+		mknod --mode=600 $FILE c $major $minor >/dev/null 2>&1
+	fi
+}
+
+case "$1" in
+  start)
+	echo -n "Initializing $DESC: "
+	create_devfiles
+	vgchange -a y
+
+#	# Mount all LVM devices
+#	for vg in $( vgchange -a y 2>/dev/null | grep active | awk -F\" '{print $2}' ); do
+#		MTPT=$( grep $vg /etc/fstab | awk '{print $2}' )
+#		mount $MTPT
+#	done
+	echo "$NAME."
+	;;
+  stop)
+	echo -n "Shutting down $DESC: "
+	# We don't really try all that hard to shut it down; far too many
+	# things that can keep it from successfully shutting down.
+	vgchange -a n
+	echo "$NAME."
+	;;
+  restart|force-reload)
+	echo -n "Restarting $DESC: "
+	vgchange -a n
+	sleep 1
+	vgchange -a y
+	echo "$NAME."
+	;;
+  *)
+	echo "Usage: /etc/init.d/$NAME {start|stop|restart|force-reload}" >&2
+	exit 1
+	;;
+esac
+
+exit 0

debian/manpages

@@ -0,0 +1,26 @@
+debian/lvm2/usr/share/man/man5/lvm.conf.5
+debian/lvm2/usr/share/man/man8/lvchange.8
+debian/lvm2/usr/share/man/man8/lvcreate.8
+debian/lvm2/usr/share/man/man8/lvdisplay.8
+debian/lvm2/usr/share/man/man8/lvextend.8
+debian/lvm2/usr/share/man/man8/lvm.8
+debian/lvm2/usr/share/man/man8/lvmchange.8
+debian/lvm2/usr/share/man/man8/lvreduce.8
+debian/lvm2/usr/share/man/man8/lvremove.8
+debian/lvm2/usr/share/man/man8/lvrename.8
+debian/lvm2/usr/share/man/man8/lvscan.8
+debian/lvm2/usr/share/man/man8/pvchange.8
+debian/lvm2/usr/share/man/man8/pvcreate.8
+debian/lvm2/usr/share/man/man8/pvdisplay.8
+debian/lvm2/usr/share/man/man8/pvscan.8
+debian/lvm2/usr/share/man/man8/vgcfgbackup.8
+debian/lvm2/usr/share/man/man8/vgchange.8
+debian/lvm2/usr/share/man/man8/vgck.8
+debian/lvm2/usr/share/man/man8/vgcreate.8
+debian/lvm2/usr/share/man/man8/vgdisplay.8
+debian/lvm2/usr/share/man/man8/vgextend.8
+debian/lvm2/usr/share/man/man8/vgmerge.8
+debian/lvm2/usr/share/man/man8/vgreduce.8
+debian/lvm2/usr/share/man/man8/vgremove.8
+debian/lvm2/usr/share/man/man8/vgrename.8
+debian/lvm2/usr/share/man/man8/vgscan.8

debian/rules

@@ -0,0 +1,119 @@
+#!/usr/bin/make -f
+# Sample debian/rules that uses debhelper. 
+# GNU copyright 1997 by Joey Hess.
+#
+# This version is for a hypothetical package that builds an
+# architecture-dependant package, as well as an architecture-independent
+# package.
+
+# Uncomment this to turn on verbose mode. 
+#export DH_VERBOSE=1
+
+# This is the debhelper compatibility version to use.
+export DH_COMPAT=3
+
+# These are used for cross-compiling and for saving the configure script
+# from having to guess our platform (since we know it already)
+DEB_HOST_GNU_TYPE   ?= $(shell dpkg-architecture -qDEB_HOST_GNU_TYPE)
+DEB_BUILD_GNU_TYPE  ?= $(shell dpkg-architecture -qDEB_BUILD_GNU_TYPE)
+
+ifneq (,$(findstring debug,$(DEB_BUILD_OPTIONS)))
+	CFLAGS += -g
+endif
+ifeq (,$(findstring nostrip,$(DEB_BUILD_OPTIONS)))
+	INSTALL_PROGRAM += -s
+endif
+
+configure: configure-stamp
+configure-stamp:
+	dh_testdir
+	# Add here commands to configure the package.
+	./configure --host=$(DEB_HOST_GNU_TYPE) --build=$(DEB_BUILD_GNU_TYPE) --prefix=/ --mandir=\$${prefix}/usr/share/man --infodir=\$${prefix}/usr/share/info
+
+	touch configure-stamp
+
+build-arch: configure-stamp build-arch-stamp
+build-arch-stamp:
+	dh_testdir
+
+	# Add here command to compile/build the package.
+	$(MAKE)
+
+	touch build-arch-stamp
+
+build-indep: configure-stamp build-indep-stamp
+build-indep-stamp:
+	dh_testdir
+
+	# Add here command to compile/build the arch indep package.
+	# It's ok not to do anything here, if you don't need to build
+	#  anything for this package.
+	#/usr/bin/docbook-to-man debian/lvm2.sgml > lvm2.1
+
+	touch build-indep-stamp
+
+build: build-arch build-indep
+
+clean:
+	dh_testdir
+	dh_testroot
+	rm -f build-stamp configure-stamp
+
+	# Add here commands to clean up after the build process.
+	-$(MAKE) distclean
+	-test -r /usr/share/misc/config.sub && \
+	  cp -f /usr/share/misc/config.sub config.sub
+	-test -r /usr/share/misc/config.guess && \
+	  cp -f /usr/share/misc/config.guess config.guess
+
+
+	dh_clean
+
+install: DH_OPTIONS=
+install: build
+	dh_testdir
+	dh_testroot
+	dh_clean -k
+	dh_installdirs
+
+	# Add here commands to install the package into debian/lvm2.
+	$(MAKE) install prefix=$(CURDIR)/debian/lvm2
+	install -m 0644 doc/example.conf debian/lvm2/etc/lvm/lvm.conf
+
+
+# Build architecture-independent files here.
+# Pass -i to all debhelper commands in this target to reduce clutter.
+binary-indep: build install
+# nada.
+
+# Build architecture-dependent files here.
+binary-arch: build install
+	dh_testdir
+	dh_testroot
+
+#	dh_installdebconf
+	dh_installdocs
+	dh_installexamples
+#	dh_installlogrotate -a
+#	dh_installemacsen -a
+#	dh_installpam -a
+#	dh_installmime -a
+	dh_installinit --update-rcd-params="start 26 S . start 50 0 6 ."
+	dh_installcron
+	dh_installman
+	dh_installinfo 
+	dh_installchangelogs
+	dh_strip
+	dh_link
+	dh_compress
+	dh_fixperms
+	dh_makeshlibs
+	dh_installdeb
+#	dh_perl -a
+	dh_shlibdeps
+	dh_gencontrol
+	dh_md5sums
+	dh_builddeb
+
+binary: binary-indep binary-arch
+.PHONY: build clean binary-indep binary-arch binary install configure

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/README

@@ -1 +0,0 @@
-Wow!  This is really incredible documentation!

doc/example.conf

@@ -0,0 +1,297 @@
+# 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 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 you to configure which block devices should
+# be used by the LVM system.
+devices {
+
+    # 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 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).
+    # 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'.
+
+
+    # By default we accept every block device:
+    filter = [ "a/.*/" ]
+
+    # Exclude the cdrom drive
+    # filter = [ "r|/dev/cdrom|" ]
+
+    # When testing I like to work with just loopback devices:
+    # filter = [ "a/loop/", "r/.*/" ]
+
+    # Or maybe all loops and ide drives except hdc:
+    # filter =[ "a|loop|", "r|/dev/hdc|", "a|/dev/ide|", "r|.*|" ]
+
+    # 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 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
+}
+
+# This section that allows you to configure the nature of the
+# information that LVM2 reports.
+log {
+
+    # 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
+
+    # 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
+
+    # Whether or not (1 or 0) to display the command name on each line output
+    command_names = 0
+
+    # A prefix to use before the message text (but after the command name,
+    # 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 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
+# talk about a 'backup' we mean making a copy of the metadata for the
+# *current* system.  The 'archive' contains old metadata configurations.
+# Backups are stored in a human readeable text format.
+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!
+    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 ?
+    retain_min = 10
+
+    # What is the minimum time you wish to keep an archive file for ?
+    retain_days = 30
+}
+
+# Settings for the running LVM2 in shell (readline) mode.
+shell {
+
+    # Number of lines of history to store in ~/.lvm_history
+    history_size = 100
+}
+
+
+# Miscellaneous global LVM2 settings
+global {
+    
+    # The file creation mask for any files and directories created.
+    # Interpreted as octal if the first digit is zero.
+    umask = 077
+
+    # Allow other users to read the files
+    #umask = 022
+
+    # Enabling test mode means that no changes to the on disk metadata
+    # will be made.  Equivalent to having the -t option on every
+    # command.  Defaults to off.
+    test = 0
+
+    # 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/pvmove_outline.txt

@@ -0,0 +1,52 @@
+Let's say we have an LV, made up of three segments of different PV's,
+I've also added in the device major:minor as this will be useful
+later:
+
++-----------------------------+
+|  PV1     |   PV2   |   PV3  | 254:3
++----------+---------+--------+
+
+
+Now our hero decides to PV move PV2 to PV4:
+
+1. Suspend our LV (254:3), this starts queueing all io, and flushes
+   all pending io.  Once the suspend has completed we are free to change
+   the mapping table.
+
+2. Set up *another* (254:4) device with the mapping table of our LV.
+
+3. Load a new mapping table into (254:3) that has identity targets for
+   parts that aren't moving, and a mirror target for parts that are.
+
+4. Unsuspend (254:3)
+
+So now we have:
+                           destination of copy
+               +--------------------->--------------+
+               |                                    |
++-----------------------------+               + -----------+
+| Identity | mirror  | Ident. | 254:3         |    PV4     |
++----------+---------+--------+               +------------+
+     |         |         |
+     \/        \/        \/
++-----------------------------+
+|  PV1     |   PV2   |   PV3  | 254:4
++----------+---------+--------+
+
+Any writes to segment2 of the LV get intercepted by the mirror target
+who checks that that chunk has been copied to the new destination, if
+it hasn't it queues the initial copy and defers the current io until
+it has finished.  Then the current io is written to *both* PV2 and the
+PV4.
+
+5. When the copying has completed 254:3 is suspended/pending flushed.
+
+6. 254:4 is taken down
+
+7. metadata is updated on disk
+
+8. 254:3 has new mapping table loaded:
+
++-----------------------------+
+|  PV1     |   PV4   |   PV3  | 254:3
++----------+---------+--------+

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'
+

doc/testing.txt

@@ -0,0 +1,46 @@
+Here's how I test new LVM2 builds without interfering with the stable
+LVM2 that is running the LV's on my development box.
+
+1) Create a set of loopback devices.
+
+2) Create a new directory to contain the LVM2 configuration files for
+   this setup.  (I use /etc/lvm_loops)
+
+3) Write a suitable lvm.conf file, this goes in the directory you just
+   created.  eg, my /etc/lvm_loops/lvm.conf looks like:
+
+   log {
+        file="/tmp/lvm2_loop.log"
+        level=9
+        verbose=0
+        overwrite=1
+   }
+
+   devices {
+        scan = "/dev"
+        filter = ["a/loop/", "r/.*/"]
+   }
+
+
+   The important this to note is the devices section which makes sure that
+   only the loopback devices are considered for LVM2 operations.
+
+4) When you want to use this test setup just set the environment
+   variable LVM_SYSTEM_DIR to point to your config directory
+   (/etc/lvm_loops in my case).
+
+5) It's a good idea to do a vgscan to initialise the filters:
+
+   export LVM_SYSTEM_DIR=/etc/lvm_loops
+   ./lvm vgscan
+
+   where ./lvm is the new build of LVM2 that I'm trying out.
+
+7) Test away.  Make sure that you are explicit about which lvm
+   executable you want to execute (eg, ./lvm if you are in
+   LVM2/tools).
+
+   
+
+
+

driver/README

@@ -1 +0,0 @@
-The driver directory

driver/device-mapper/README

@@ -1,104 +0,0 @@
-The main goal of this driver is to support volume management in
-general, not just for LVM.  The kernel should provide general
-services, not support specific applications.  eg, The driver has no
-concept of volume groups.
-
-The driver does this by mapping sector ranges for the logical device
-onto 'targets'.
-
-When the logical device is accessed, the make_request function looks
-up the correct target for the given sector, and then asks this target
-to do the remapping.
-
-A btree structure is used to hold the sector range -> target mapping.
-Since we know all the entries in the btree in advance we can make a
-very compact tree, omitting pointers to child nodes, (child nodes
-locations can be calculated).  Typical users would find they only have
-a handful of targets for each logical volume LV.
-
-Benchmarking with bonnie++ suggests that this is certainly no slower
-than current LVM.
-
-
-Target types are not hard coded, instead the register_mapping_type
-function should be called.  A target type is specified using three
-functions (see the header):
-
-dm_ctr_fn - takes a string and contructs a target specific piece of
-            context data.
-dm_dtr_fn - destroy contexts.
-dm_map_fn - function that takes a buffer_head and some previously
-            constructed context and performs the remapping.
-
-Currently there are two two trivial mappers, which are automatically
-registered: 'linear', and 'io_error'.  Linear alone is enough to
-implement most of LVM.
-
-
-I do not like ioctl interfaces so this driver is currently controlled
-through a /proc interface.  /proc/device-mapper/control allows you to
-create and remove devices by 'cat'ing a line of the following format:
-
-create <device name> [minor no]
-remove <device name>
-
-If you're not using devfs you'll have to do the mknod'ing yourself,
-otherwise the device will appear in /dev/device-mapper automatically.
-
-/proc/device-mapper/<device name> accepts the mapping table:
-
-begin
-<sector start> <length> <target name> <target args>...
-...
-end
-
-where <target args> are specific to the target type, eg. for a linear
-mapping:
-
-<sector start> <length> linear <major> <minor> <start>
-
-and the io-err mapping:
-
-<sector start> <length> io-err
-
-The begin/end lines around the table are nasty, they should be handled
-by open/close of the file.
-
-The interface is far from complete, currently loading a table either
-succeeds or fails, you have no way of knowing which line of the
-mapping table was erroneous.  Also there is no way to get status
-information out, though this should be easy to add, either as another
-/proc file, or just by reading the same /proc/device-mapper/<device>
-file.  I will be seperating the loading and validation of a table from
-the binding of a valid table to a device.
-
-It has been suggested that I should implement a little custom
-filesystem rather than labouring with /proc.  For example doing a
-mkdir foo in /wherever/device-mapper would create a new device. People
-waiting for a status change (eg, a mirror operation to complete) could
-poll a file.  Does the community find this an acceptable way to go ?
-
-
-At the moment the table assumes 32 bit keys (sectors), the move to 64
-bits will involve no interface changes, since the tables will be read
-in as ascii data.  A different table implementation can therefor be
-provided at another time.  Either just by changing offset_t to 64
-bits, or maybe implementing a structure which looks up the keys in
-stages (ie, 32 bits at a time).
-
-
-More interesting targets:
-
-striped mapping; given a stripe size and a number of device regions
-this would stripe data across the regions.  Especially useful, since
-we could limit each striped region to a 32 bit area and then avoid
-nasty 64 bit %'s.
-
-mirror mapping; would set off a kernel thread slowly copying data from
-one region to another, ensuring that any new writes got copied to both
-destinations correctly.  Enabling us to implement a live pvmove
-correctly.
-
-
-
-

driver/device-mapper/device-mapper.h

@@ -1,88 +0,0 @@
-/*
- * device-mapper.h
- *
- * Copyright (C) 2001 Sistina Software (UK) Limited.
- *
- * This file is released under the GPL.
- */
-
-/*
- * Changelog
- *
- *     14/08/2001 - First version [Joe Thornber]
- */
-
-#ifndef DEVICE_MAPPER_H
-#define DEVICE_MAPPER_H
-
-#include <linux/major.h>
-
-/* FIXME: Use value from local range for now, for co-existence with LVM 1 */
-#define DM_BLK_MAJOR 124
-
-struct dm_table;
-struct dm_dev;
-struct text_region;
-typedef unsigned int offset_t;
-
-typedef void (*dm_error_fn)(const char *message, void *private);
-
-/*
- * constructor, destructor and map fn types
- */
-typedef int (*dm_ctr_fn)(struct dm_table *t, offset_t b, offset_t l,
-			 struct text_region *args, void **context,
-			 dm_error_fn err, void *e_private);
-
-typedef void (*dm_dtr_fn)(struct dm_table *t, void *c);
-typedef int (*dm_map_fn)(struct buffer_head *bh, int rw, void *context);
-typedef int (*dm_err_fn)(struct buffer_head *bh, int rw, void *context);
-
-
-/*
- * Contructors should call this to make sure any
- * destination devices are handled correctly
- * (ie. opened/closed).
- */
-int dm_table_get_device(struct dm_table *t, const char *path,
-			struct dm_dev **result);
-void dm_table_put_device(struct dm_table *table, struct dm_dev *d);
-
-/*
- * information about a target type
- */
-struct target_type {
-        const char *name;
-        struct module *module;
-        dm_ctr_fn ctr;
-        dm_dtr_fn dtr;
-        dm_map_fn map;
-	dm_err_fn err;
-};
-
-int dm_register_target(struct target_type *t);
-int dm_unregister_target(struct target_type *t);
-
-/*
- * These may be useful for people writing target
- * types.
- */
-struct text_region {
-        const char *b;
-        const char *e;
-};
-
-int dm_get_number(struct text_region *txt, unsigned int *n);
-int dm_get_line(struct text_region *txt, struct text_region *line);
-int dm_get_word(struct text_region *txt, struct text_region *word);
-void dm_txt_copy(char *dest, size_t max, struct text_region *txt);
-void dm_eat_space(struct text_region *txt);
-
-
-#endif /* DEVICE_MAPPER_H */
-
-/*
- * Local variables:
- * c-file-style: "linux"
- * End:
- */

driver/device-mapper/dm-fs.c

@@ -1,553 +0,0 @@
-/*
- * *very* heavily based on ramfs
- *
- * Copyright (C) 2001 Sistina Software
- *
- * This file is released under the GPL.
- */
-
-#include <linux/module.h>
-#include <linux/fs.h>
-#include <linux/pagemap.h>
-#include <linux/init.h>
-#include <linux/string.h>
-#include <linux/locks.h>
-#include <linux/file.h>
-
-#include <asm/uaccess.h>
-
-#include "dm.h"
-
-/* some magic number */
-#define DM_MAGIC	0x444D4653
-
-static struct super_operations dm_ops;
-static struct address_space_operations dm_aops;
-static struct file_operations dm_dir_operations;
-static struct file_operations dm_file_operations;
-static struct inode_operations dm_dir_inode_operations;
-
-struct vfsmount *_mnt;
-
-static int _unlink(struct inode *dir, struct dentry *dentry);
-
-#define NOT_A_TABLE ((struct dm_table *) 1)
-
-/*
- * context for the line splitter and error function.
- */
-struct line_c {
-	unsigned int line_num;
-	loff_t next_read;
-	char data[MAX_TARGET_LINE];
-
-	struct file *in;
-	struct file *out;
-};
-
-static int is_identifier(const char *str, int len)
-{
-	if (len > DM_NAME_LEN - 1)
-		return 0;
-
-	while(len--) {
-		if (!isalnum(*str) && *str != '_')
-			return 0;
-		str++;
-	}
-
-	return 1;
-}
-
-/*
- * Grabs lines one at a time from the table file.
- */
-int extract_line(struct text_region *line, void *private)
-{
-	struct line_c *lc = (struct line_c *) private;
-	struct text_region text;
-	ssize_t n;
-	loff_t off = lc->next_read;
-	const char *read_begin;
-	mm_segment_t fs;
-
-	fs = get_fs();
-	set_fs(get_ds());
-
-	n = lc->in->f_op->read(lc->in, lc->data, sizeof (lc->data), &off);
-
-	set_fs(fs);
-
-	if (n <= 0)
-		return 0;
-
-	read_begin = text.b = lc->data;
-	text.e = lc->data + n;
-
-	if (!dm_get_line(&text, line))
-		return 0;
-
-	lc->line_num++;
-	lc->next_read += line->e - read_begin;
-
-	return 1;
-}
-
-static struct file *open_error_file(struct file *table)
-{
-	struct file *f;
-	char *name, *buffer;
-	int bufsize = PATH_MAX + 1;
-
-	if (bufsize < PAGE_SIZE)
-		bufsize = PAGE_SIZE;
-
-	/* Get space to append ".err" */
- 	buffer = (char *) kmalloc(bufsize + 4, GFP_KERNEL);
-
-	if (!buffer)
-		return 0;
-
-	/* Get path name */
-	name = d_path(table->f_dentry, table->f_vfsmnt, buffer, bufsize);
-
-	if (!name) {
-		kfree(buffer);
-		return 0;
-	}
-
-	/* Create error file */
-	strcat(name, ".err");
-	f = filp_open(name, O_WRONLY | O_TRUNC | O_CREAT, S_IRUGO);
-
-	kfree(buffer);
-
-	if (f)
-		f->f_dentry->d_inode->u.generic_ip = NOT_A_TABLE;
-
-	return f;
-}
-
-static void close_error_file(struct file *out)
-{
-	fput(out);
-}
-
-static void parse_error(const char *message, void *private)
-{
-	struct line_c *lc = (struct line_c *) private;
-	char buffer[32];
-
-#define emit(b, l) lc->out->f_op->write(lc->out, (b), (l), &lc->out->f_pos)
-
-	emit(lc->in->f_dentry->d_name.name, lc->in->f_dentry->d_name.len);
-	sprintf(buffer, "(%d): ", lc->line_num);
-	emit(buffer, strlen(buffer));
-	emit(message, strlen(message));
-	emit("\n", 1);
-
-#undef emit
-}
-
-static int _release(struct inode *inode, struct file *f)
-{
-	/* FIXME: we should lock the inode to
-	   prevent someone else opening it while
-	   we are parsing */
-	struct line_c *lc;
-	struct dm_table *table = (struct dm_table *) inode->u.generic_ip;
-
-	/* noop for files without tables (.err files) */
-	if (table == NOT_A_TABLE)
-		return 0;
-
-	/* only bother parsing if it was open for a write */
-	if (!(f->f_mode & S_IWUGO))
-		return 0;
-
-	/* free off the old table */
-	if (table) {
-		dm_table_destroy(table);
-		inode->u.generic_ip = 0;
-	}
-
-	if (!(lc = kmalloc(sizeof (*lc), GFP_KERNEL)))
-		return -ENOMEM;
-
-	memset(lc, 0, sizeof (*lc));
-	lc->in = f;
-
-	if (!(lc->out = open_error_file(lc->in)))
-		return -ENOMEM;
-
-	table = dm_parse(extract_line, lc, parse_error, lc);
-	close_error_file(lc->out);
-
-	kfree(lc);
-	inode->u.generic_ip = table;
-
-	return 0;
-}
-
-void _put_inode(struct inode *inode)
-{
-	struct mapped_device *md = 
-		(struct mapped_device *) inode->u.generic_ip;
-	struct dm_table *table = (struct dm_table *) inode->u.generic_ip;
-
-	if (inode->i_mode & S_IFDIR) {
-		if (md)
-			dm_remove(md);
-
-	} else {
-		if (table)
-			dm_table_destroy(table);
-
-	}
-
-	inode->u.generic_ip = 0;
-	force_delete(inode);
-}
-
-static int _statfs(struct super_block *sb, struct statfs *buf)
-{
-	buf->f_type = DM_MAGIC;
-	buf->f_bsize = PAGE_CACHE_SIZE;
-	buf->f_namelen = 255;
-	return 0;
-}
-
-/*
- * Lookup the data. This is trivial - if the dentry didn't already
- * exist, we know it is negative.
- */
-static struct dentry *_lookup(struct inode *dir, struct dentry *dentry)
-{
-	d_add(dentry, NULL);
-	return NULL;
-}
-
-/*
- * Read a page. Again trivial. If it didn't already exist
- * in the page cache, it is zero-filled.
- */
-static int _readpage(struct file *file, struct page *page)
-{
-	if (!Page_Uptodate(page)) {
-		memset(kmap(page), 0, PAGE_CACHE_SIZE);
-		kunmap(page);
-		flush_dcache_page(page);
-		SetPageUptodate(page);
-	}
-	UnlockPage(page);
-	return 0;
-}
-
-/*
- * Writing: just make sure the page gets marked dirty, so that
- * the page stealer won't grab it.
- */
-static int _writepage(struct page *page)
-{
-	SetPageDirty(page);
-	UnlockPage(page);
-	return 0;
-}
-
-static int _prepare_write(struct file *file, struct page *page,
-			      unsigned offset, unsigned to)
-{
-	void *addr = kmap(page);
-	if (!Page_Uptodate(page)) {
-		memset(addr, 0, PAGE_CACHE_SIZE);
-		flush_dcache_page(page);
-		SetPageUptodate(page);
-	}
-	SetPageDirty(page);
-	return 0;
-}
-
-static int _commit_write(struct file *file, struct page *page,
-			     unsigned offset, unsigned to)
-{
-	struct inode *inode = page->mapping->host;
-	loff_t pos = ((loff_t) page->index << PAGE_CACHE_SHIFT) + to;
-
-	kunmap(page);
-	if (pos > inode->i_size)
-		inode->i_size = pos;
-	return 0;
-}
-
-struct inode *_get_inode(struct super_block *sb, int mode, int dev)
-{
-	struct inode *inode = new_inode(sb);
-
-	if (inode) {
-		inode->i_mode = mode;
-		inode->i_uid = current->fsuid;
-		inode->i_gid = current->fsgid;
-		inode->i_blksize = PAGE_CACHE_SIZE;
-		inode->i_blocks = 0;
-		inode->i_rdev = NODEV;
-		inode->i_mapping->a_ops = &dm_aops;
-		inode->i_atime = inode->i_mtime = inode->i_ctime = CURRENT_TIME;
-		switch (mode & S_IFMT) {
-		case S_IFBLK:
-		case S_IFCHR:
-			init_special_inode(inode, mode, dev);
-			break;
-		case S_IFREG:
-			inode->i_fop = &dm_file_operations;
-			break;
-		case S_IFDIR:
-			inode->i_op = &dm_dir_inode_operations;
-			inode->i_fop = &dm_dir_operations;
-			break;
-		case S_IFLNK:
-			inode->i_op = &page_symlink_inode_operations;
-			break;
-		default:
-			make_bad_inode(inode);
-		}
-	}
-	return inode;
-}
-
-/*
- * File creation. Allocate an inode, and we're done..
- */
-static int _mknod(struct inode *dir, struct dentry *dentry, int mode)
-{
-	int error = -ENOSPC;
-	struct inode *inode = _get_inode(dir->i_sb, mode, 0);
-
-	if (inode) {
-		d_instantiate(dentry, inode);
-		dget(dentry);	/* Extra count - pin the dentry in core */
-		error = 0;
-	}
-
-	return error;
-}
-
-static int _mkdir(struct inode *dir, struct dentry *dentry, int mode)
-{
-	int r;
-	const char *name = (const char *) dentry->d_name.name;
-	struct mapped_device *md;
-
-	if (!is_identifier(name, dentry->d_name.len))
-		return -EPERM;	/* or EINVAL ? */
-
-	md = dm_create(name, -1);
-	if (IS_ERR(md))
-		return PTR_ERR(md);
-
-	r = _mknod(dir, dentry, mode | S_IFDIR);
-	if (r) {
-		dm_remove(md);
-		return r;
-	}
-
-	dentry->d_inode->u.generic_ip = md;
-	md->inode = dentry->d_inode;
-
-	return 0;
-}
-
-static int _rmdir(struct inode *dir, struct dentry *dentry)
-{
-	int r = _unlink(dir, dentry);
-	return r;
-}
-
-static int _create(struct inode *dir, struct dentry *dentry, int mode)
-{
-	int r;
-
-	if ((r = _mknod(dir, dentry, mode | S_IFREG)))
-		return r;
-
-	dentry->d_inode->u.generic_ip = 0;
-	return 0;
-}
-
-static inline int positive(struct dentry *dentry)
-{
-	return dentry->d_inode && !d_unhashed(dentry);
-}
-
-/*
- * Check that a directory is empty (this works
- * for regular files too, they'll just always be
- * considered empty..).
- *
- * Note that an empty directory can still have
- * children, they just all have to be negative..
- */
-static int _empty(struct dentry *dentry)
-{
-	struct list_head *list;
-
-	spin_lock(&dcache_lock);
-	list = dentry->d_subdirs.next;
-
-	while (list != &dentry->d_subdirs) {
-		struct dentry *de = list_entry(list, struct dentry, d_child);
-
-		if (positive(de)) {
-			spin_unlock(&dcache_lock);
-			return 0;
-		}
-		list = list->next;
-	}
-	spin_unlock(&dcache_lock);
-	return 1;
-}
-
-/*
- * This works for both directories and regular files.
- * (non-directories will always have empty subdirs)
- */
-static int _unlink(struct inode *dir, struct dentry *dentry)
-{
-	int retval = -ENOTEMPTY;
-
-	if (_empty(dentry)) {
-		struct inode *inode = dentry->d_inode;
-
-		inode->i_nlink--;
-		dput(dentry);	/* Undo the count from "create" - this does all the work */
-		retval = 0;
-	}
-	return retval;
-}
-
-/*
- * The VFS layer already does all the dentry stuff for rename,
- * we just have to decrement the usage count for the target if
- * it exists so that the VFS layer correctly free's it when it
- * gets overwritten.
- */
-static int _rename(struct inode *old_dir, struct dentry *old_dentry,
-		       struct inode *new_dir, struct dentry *new_dentry)
-{
-	struct inode *inode = new_dentry->d_inode;
-	struct mapped_device *md = old_dir->u.generic_ip;
-	struct dm_table *table = old_dentry->d_inode->u.generic_ip;
-
-	if (!md || !table)
-		return -EINVAL;
-
-	if (!_empty(new_dentry))
-		return -ENOTEMPTY;
-
-	if (!strcmp(new_dentry->d_name.name, "ACTIVE")) {
-		/* activate the table */
-		dm_activate(md, table);
-
-	} else if (!strcmp(old_dentry->d_name.name, "ACTIVE")) {
-		dm_suspend(md);
-
-	}
-
-	if (inode) {
-		inode->i_nlink--;
-		dput(new_dentry);
-	}
-
-	return 0;
-}
-
-static int _sync_file(struct file *file, struct dentry *dentry,
-			  int datasync)
-{
-	return 0;
-}
-
-static struct address_space_operations dm_aops = {
-	readpage:	_readpage,
-	writepage:	_writepage,
-	prepare_write:	_prepare_write,
-	commit_write:	_commit_write
-};
-
-static struct file_operations dm_file_operations = {
-	read:		generic_file_read,
-	write:		generic_file_write,
-	fsync:		_sync_file,
-	release:	_release,
-};
-
-static struct file_operations dm_dir_operations = {
-	read:		generic_read_dir,
-	readdir:	dcache_readdir,
-	fsync:		_sync_file,
-};
-
-static struct inode_operations root_dir_inode_operations = {
-	lookup:		_lookup,
-	mkdir:		_mkdir,
-	rmdir:		_rmdir,
-	rename:		_rename,
-};
-
-static struct inode_operations dm_dir_inode_operations = {
-	create:		_create,
-	lookup:		_lookup,
-	unlink:		_unlink,
-	rename:		_rename,
-};
-
-static struct super_operations dm_ops = {
-	statfs:		_statfs,
-	put_inode:	_put_inode,
-};
-
-static struct super_block *_read_super(struct super_block *sb, void *data,
-				       int silent)
-{
-	struct inode *inode;
-	struct dentry *root;
-
-	sb->s_blocksize = PAGE_CACHE_SIZE;
-	sb->s_blocksize_bits = PAGE_CACHE_SHIFT;
-	sb->s_magic = DM_MAGIC;
-	sb->s_op = &dm_ops;
-	inode = _get_inode(sb, S_IFDIR | 0755, 0);
-	inode->i_op = &root_dir_inode_operations;
-	if (!inode)
-		return NULL;
-
-	root = d_alloc_root(inode);
-	if (!root) {
-		iput(inode);
-		return NULL;
-	}
-	sb->s_root = root;
-	return sb;
-}
-
-static DECLARE_FSTYPE(_fs_type, "dmfs", _read_super, FS_SINGLE);
-
-int __init dm_fs_init(void)
-{
-	int r;
-	if ((r = register_filesystem(&_fs_type)))
-		return r;
-
-	_mnt = kern_mount(&_fs_type);
-
-	if (IS_ERR(_mnt)) {
-		unregister_filesystem(&_fs_type);
-		return PTR_ERR(_mnt);
-	}
-
-	return 0;
-}
-
-void __exit dm_fs_exit(void)
-{
-	unregister_filesystem(&_fs_type);
-}

driver/device-mapper/dm-linear.c

@@ -1,125 +0,0 @@
-/*
- * dm-linear.c
- *
- * Copyright (C) 2001 Sistina Software (UK) Limited.
- *
- * This file is released under the GPL.
- */
-
-#include <linux/config.h>
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/slab.h>
-#include <linux/fs.h>
-#include <linux/blkdev.h>
-#include <linux/device-mapper.h>
-
-#include "dm.h"
-
-/*
- * linear: maps a linear range of a device.
- */
-struct linear_c {
-	long delta;		/* FIXME: we need a signed offset type */
-	struct dm_dev *dev;
-};
-
-/*
- * construct a linear mapping.
- * <dev_path> <offset>
- */
-static int linear_ctr(struct dm_table *t, offset_t b, offset_t l,
-		      struct text_region *args, void **context,
-		      dm_error_fn err, void *e_private)
-{
-	struct linear_c *lc;
-	unsigned int start;
-	struct text_region word;
-	char path[256];		/* FIXME: magic */
-	int r = -EINVAL;
-
-	if (!(lc = kmalloc(sizeof(lc), GFP_KERNEL))) {
-		err("couldn't allocate memory for linear context", e_private);
-		return -ENOMEM;
-	}
-
-	if (!dm_get_word(args, &word)) {
-		err("couldn't get device path", e_private);
-		goto bad;
-	}
-
-	dm_txt_copy(path, sizeof(path) - 1, &word);
-
-	if (!dm_get_number(args, &start)) {
-		err("destination start not given", e_private);
-		goto bad;
-	}
-
-	if ((r = dm_table_get_device(t, path, &lc->dev))) {
-		err("couldn't lookup device", e_private);
-		r = -ENXIO;
-		goto bad;
-	}
-
-	lc->delta = (int) start - (int) b;
-	*context = lc;
-	return 0;
-
- bad:
-	kfree(lc);
-	return r;
-}
-
-static void linear_dtr(struct dm_table *t, void *c)
-{
-	struct linear_c *lc = (struct linear_c *) c;
-	dm_table_put_device(t, lc->dev);
-	kfree(c);
-}
-
-static int linear_map(struct buffer_head *bh, int rw, void *context)
-{
-	struct linear_c *lc = (struct linear_c *) context;
-
-	bh->b_rdev = lc->dev->dev;
-	bh->b_rsector = bh->b_rsector + lc->delta;
-	return 1;
-}
-
-static struct target_type linear_target = {
-	name: "linear",
-	module: THIS_MODULE,
-	ctr: linear_ctr,
-	dtr: linear_dtr,
-	map: linear_map,
-};
-
-static int __init linear_init(void)
-{
-	int r = dm_register_target(&linear_target);
-
-	if (r < 0)
-		printk(KERN_ERR
-		       "Device mapper: Linear: register failed %d\n", r);
-
-	return r;
-}
-
-static void __exit linear_exit(void)
-{
-	int r = dm_unregister_target(&linear_target);
-
-	if (r < 0)
-		printk(KERN_ERR
-		       "Device mapper: Linear: unregister failed %d\n", r);
-}
-
-module_init(linear_init);
-module_exit(linear_exit);
-
-MODULE_AUTHOR("Joe Thornber <thornber@uk.sistina.com>");
-MODULE_DESCRIPTION("Device Mapper: Linear mapping");
-#ifdef MODULE_LICENSE
-MODULE_LICENSE("GPL");
-#endif
-

driver/device-mapper/dm-parse.c

@@ -1,201 +0,0 @@
-/*
- * dm-parse.c
- *
- * Copyright (C) 2001 Sistina Software
- *
- * This software is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2, or (at
- * your option) any later version.
- *
- * This software 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 General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with GNU CC; see the file COPYING.  If not, write to
- * the Free Software Foundation, 59 Temple Place - Suite 330,
- * Boston, MA 02111-1307, USA.
- *
- *     4/09/2001 - First version [Joe Thornber]
- */
-
-#include "dm.h"
-
-struct dm_table *dm_parse(extract_line_fn line_fn, void *l_private,
-			  dm_error_fn err_fn, void *e_private)
-{
-	struct text_region line, word;
-	struct dm_table *table = dm_table_create();
-	struct target_type *ttype;
-	offset_t start, size, high;
-	char target_name[64];
-	void *context;
-	int last_line_good = 1, was_error = 0;
-
-	if (!table)
-		return 0;
-
-#define PARSE_ERROR(msg) {\
-  last_line_good = 0;\
-  was_error = 1;\
-  err_fn(msg, e_private);\
-  continue;}
-
-	while (line_fn(&line, l_private)) {
-
-		/*
-		 * each line is of the format:
-		 * <sector start> <length (sectors)> <target type> <args...>
-		 */
-
-		/* the line may be blank ... */
-		dm_eat_space(&line);
-		if (dm_empty_tok(&line) || (*line.b == '#'))
-			continue;
-
-		/* sector start */
-		if (!dm_get_number(&line, &start))
-			PARSE_ERROR("expecting a number for sector start");
-
-		/* length */
-		if (!dm_get_number(&line, &size))
-			PARSE_ERROR("expecting a number for region length");
-
-		/* target type */
-		if (!dm_get_word(&line, &word))
-			PARSE_ERROR("target type missing");
-
-		/* we have to copy the target type to a C str */
-		dm_txt_copy(target_name, sizeof(target_name), &word);
-
-		/* lookup the target type */
-		if (!(ttype = dm_get_target_type(target_name)))
-			PARSE_ERROR("unable to find target type");
-
-		/* check there isn't a gap, but only if the last target
-		   parsed ok. */
-		if (last_line_good &&
-
-		    ((table->num_targets &&
-		      start != table->highs[table->num_targets - 1] + 1) ||
-		     (!table->num_targets && start)))
-			PARSE_ERROR("gap in target ranges");
-
-		/* build the target */
-		if (ttype->ctr(table, start, size, &line, &context,
-			       err_fn, e_private))
-			PARSE_ERROR("target constructor failed");
-
-		/* no point registering the target
-                   if there was an error. */
-		if (was_error) {
-			ttype->dtr(table, context);
-			continue;
-		}
-
-		/* add the target to the table */
-		high = start + (size - 1);
-		if (dm_table_add_target(table, high, ttype, context))
-			PARSE_ERROR("internal error adding target to table");
-	}
-
-#undef PARSE_ERROR
-
-	if (was_error || dm_table_complete(table)) {
-		dm_table_destroy(table);
-		return 0;
-	}
-
-	return table;
-}
-
-/*
- * convert the text in txt to an unsigned int,
- * returns 0 on failure.
- */
-int dm_get_number(struct text_region *txt, unsigned int *n)
-{
-	char *ptr;
-
-	dm_eat_space(txt);
-	if (dm_empty_tok(txt))
-		return 0;
-
-	*n = simple_strtoul(txt->b, &ptr, 10);
-	if (ptr == txt->b)
-		return 0;
-
-	txt->b = ptr;
-
-	return 1;
-}
-
-/*
- * extracts text up to the next '\n'.
- */
-int dm_get_line(struct text_region *txt, struct text_region *line)
-{
-	const char *ptr;
-
-	dm_eat_space(txt);
-	if (dm_empty_tok(txt))
-		return 0;
-
-	ptr = line->b = txt->b;
-	while((ptr != txt->e) && (*ptr != '\n'))
-		ptr++;
-
-	txt->b = line->e = ptr;
-	return 1;
-}
-
-/*
- * extracts the next non-whitespace token from the file.
- */
-int dm_get_word(struct text_region *txt, struct text_region *word)
-{
-	const char *ptr;
-
-	dm_eat_space(txt);
-
-	if (dm_empty_tok(txt))
-		return 0;
-
-	word->b = txt->b;
-	for (ptr = word->b = txt->b;
-	     ptr != txt->e && !isspace((int) *ptr); ptr++)
-		;
-
-	word->e = txt->b = ptr;
-
-	return 1;
-}
-
-/*
- * copy a text region into a traditional C str.
- */
-void dm_txt_copy(char *dest, size_t max, struct text_region *txt)
-{
-	size_t len = txt->e - txt->b;
-	if (len > --max)
-		len = max;
-	strncpy(dest, txt->b, len);
-	dest[len] = '\0';
-}
-
-/*
- * skip leading whitespace
- */
-void dm_eat_space(struct text_region *txt)
-{
-	while(txt->b != txt->e && isspace((int) *txt->b))
-		(txt->b)++;
-}
-
-
-EXPORT_SYMBOL(dm_get_number);
-EXPORT_SYMBOL(dm_get_word);
-EXPORT_SYMBOL(dm_txt_copy);
-EXPORT_SYMBOL(dm_eat_space);

driver/device-mapper/dm-table.c

@@ -1,338 +0,0 @@
-/*
- * dm-table.c
- *
- * Copyright (C) 2001 Sistina Software (UK) Limited.
- *
- * This file is released under the GPL.
- */
-
-/*
- * Changelog
- *
- *     16/08/2001 - First version [Joe Thornber]
- */
-
-#include "dm.h"
-
-/* ceiling(n / size) * size */
-static inline ulong round_up(ulong n, ulong size)
-{
-	ulong r = n % size;
-	return n + (r ? (size - r) : 0);
-}
-
-/* ceiling(n / size) */
-static inline ulong div_up(ulong n, ulong size)
-{
-	return round_up(n, size) / size;
-}
-
-/* similar to ceiling(log_size(n)) */
-static uint int_log(ulong n, ulong base)
-{
-	int result = 0;
-
-	while (n > 1) {
-		n = div_up(n, base);
-		result++;
-	}
-
-	return result;
-}
-
-/*
- * return the highest key that you could lookup
- * from the n'th node on level l of the btree.
- */
-static offset_t high(struct dm_table *t, int l, int n)
-{
-	for (; l < t->depth - 1; l++)
-		n = get_child(n, CHILDREN_PER_NODE - 1);
-
-	if (n >= t->counts[l])
-		return (offset_t) -1;
-
-	return get_node(t, l, n)[KEYS_PER_NODE - 1];
-}
-
-/*
- * fills in a level of the btree based on the
- * highs of the level below it.
- */
-static int setup_btree_index(int l, struct dm_table *t)
-{
-	int n, k;
-	offset_t *node;
-
-	for (n = 0; n < t->counts[l]; n++) {
-		node = get_node(t, l, n);
-
-		for (k = 0; k < KEYS_PER_NODE; k++)
-			node[k] = high(t, l + 1, get_child(n, k));
-	}
-
-	return 0;
-}
-
-/*
- * highs, and targets are managed as dynamic
- * arrays during a table load.
- */
-static int alloc_targets(struct dm_table *t, int num)
-{
-	offset_t *n_highs;
-	struct target *n_targets;
-	int n = t->num_targets;
-	int size = (sizeof(struct target) + sizeof(offset_t)) * num;
-
-	n_highs = vmalloc(size);
-	if (!n_highs)
-		return -ENOMEM;
-
-	n_targets = (struct target *) (n_highs + num);
-
-	if (n) {
-		memcpy(n_highs, t->highs, sizeof(*n_highs) * n);
-		memcpy(n_targets, t->targets, sizeof(*n_targets) * n);
-	}
-
-	vfree(t->highs);
-
-	t->num_allocated = num;
-	t->highs = n_highs;
-	t->targets = n_targets;
-
-	return 0;
-}
-
-struct dm_table *dm_table_create(void)
-{
-	struct dm_table *t = kmalloc(sizeof(struct dm_table), GFP_NOIO);
-
-	if (!t)
-		return 0;
-
-	memset(t, 0, sizeof(*t));
-	INIT_LIST_HEAD(&t->devices);
-
-	/* allocate a single nodes worth of targets to
-	   begin with */
-	if (alloc_targets(t, KEYS_PER_NODE)) {
-		kfree(t);
-		t = 0;
-	}
-
-	return t;
-}
-
-static void free_devices(struct list_head *devices)
-{
-	struct list_head *tmp, *next;
-
-	for (tmp = devices->next; tmp != devices; tmp = next) {
-		struct dm_dev *dd = list_entry(tmp, struct dm_dev, list);
-		next = tmp->next;
-		kfree(dd);
-	}
-}
-
-void dm_table_destroy(struct dm_table *t)
-{
-	int i;
-
-	/* free the indexes (see dm_table_complete) */
-	if (t->depth >= 2)
-		vfree(t->index[t->depth - 2]);
-	vfree(t->highs);
-
-	/* free the targets */
-	for (i = 0; i < t->num_targets; i++) {
-		struct target *tgt = &t->targets[i];
-		if (tgt->private)
-			tgt->type->dtr(t, tgt->private);
-	}
-
-	/* free the device list */
-	if (t->devices.next != &t->devices) {
-		WARN("there are still devices present, someone isn't "
-		     "calling dm_table_remove_device");
-
-		free_devices(&t->devices);
-	}
-
-	kfree(t);
-}
-
-/*
- * Checks to see if we need to extend
- * highs or targets.
- */
-static inline int check_space(struct dm_table *t)
-{
-	if (t->num_targets >= t->num_allocated)
-		return alloc_targets(t, t->num_allocated * 2);
-
-	return 0;
-}
-
-
-/*
- * convert a device path to a kdev_t.
- */
-int lookup_device(const char *path, kdev_t *dev)
-{
-       int r;
-       struct nameidata nd;
-       struct inode *inode;
-
-       if (!path_init(path, LOOKUP_FOLLOW, &nd))
-               return 0;
-
-       if ((r = path_walk(path, &nd)))
-               goto bad;
-
-       inode = nd.dentry->d_inode;
-       if (!inode) {
-               r = -ENOENT;
-               goto bad;
-       }
-
-       if (!S_ISBLK(inode->i_mode)) {
-               r = -EINVAL;
-               goto bad;
-       }
-
-       *dev = inode->i_bdev->bd_dev;
-
- bad:
-       path_release(&nd);
-       return r;
-}
-
-/*
- * see if we've already got a device in the list.
- */
-static struct dm_dev *find_device(struct list_head *l, kdev_t dev)
-{
-	struct list_head *tmp;
-
-	for (tmp = l->next; tmp != l; tmp = tmp->next) {
-
-		struct dm_dev *dd = list_entry(tmp, struct dm_dev, list);
-		if (dd->dev == dev)
-			return dd;
-	}
-
-       return 0;
-}
-
-/*
- * add a device to the list, or just increment the
- * usage count if it's already present.
- */
-int dm_table_get_device(struct dm_table *t, const char *path,
-			struct dm_dev **result)
-{
-	int r;
-	kdev_t dev;
-	struct dm_dev *dd;
-
-	/* convert the path to a device */
-	if ((r = lookup_device(path, &dev)))
-		return r;
-
-	dd = find_device(&t->devices, dev);
-	if (!dd) {
-		dd = kmalloc(sizeof(*dd), GFP_KERNEL);
-		if (!dd)
-			return -ENOMEM;
-
-		dd->dev = dev;
-		dd->bd = 0;
-		atomic_set(&dd->count, 0);
-		list_add(&dd->list, &t->devices);
-	}
-	atomic_inc(&dd->count);
-	*result = dd;
-
-	return 0;
-}
-/*
- * decrement a devices use count and remove it if
- * neccessary.
- */
-void dm_table_put_device(struct dm_table *t, struct dm_dev *dd)
-{
-       if (atomic_dec_and_test(&dd->count)) {
-	       list_del(&dd->list);
-               kfree(dd);
-       }
-}
-
-/*
- * adds a target to the map
- */
-int dm_table_add_target(struct dm_table *t, offset_t high,
-			struct target_type *type, void *private)
-{
-	int r, n;
-
-	if ((r = check_space(t)))
-		return r;
-
-	n = t->num_targets++;
-	t->highs[n] = high;
-	t->targets[n].type = type;
-	t->targets[n].private = private;
-
-	return 0;
-}
-
-
-static int setup_indexes(struct dm_table *t)
-{
-	int i, total = 0;
-	offset_t *indexes;
-
-	/* allocate the space for *all* the indexes */
-	for (i = t->depth - 2; i >= 0; i--) {
-		t->counts[i] = div_up(t->counts[i + 1], CHILDREN_PER_NODE);
-		total += t->counts[i];
-	}
-
-	if (!(indexes = vmalloc(NODE_SIZE * total)))
-		return -ENOMEM;
-
-	/* set up internal nodes, bottom-up */
-	for (i = t->depth - 2, total = 0; i >= 0; i--) {
-		t->index[i] = indexes + (KEYS_PER_NODE * t->counts[i]);
-		setup_btree_index(i, t);
-	}
-
-	return 0;
-}
-
-
-/*
- * builds the btree to index the map
- */
-int dm_table_complete(struct dm_table *t)
-{
-	int leaf_nodes, r = 0;
-
-	/* how many indexes will the btree have ? */
-	leaf_nodes = div_up(t->num_targets, KEYS_PER_NODE);
-	t->depth = 1 + int_log(leaf_nodes, CHILDREN_PER_NODE);
-
-	/* leaf layer has already been set up */
-	t->counts[t->depth - 1] = leaf_nodes;
-	t->index[t->depth - 1] = t->highs;
-
-	if (t->depth >= 2)
-		r = setup_indexes(t);
-
-	return r;
-}
-
-EXPORT_SYMBOL(dm_table_get_device);
-EXPORT_SYMBOL(dm_table_put_device);

driver/device-mapper/dm-target.c

@@ -1,181 +0,0 @@
-/*
- * dm-target.c
- *
- * Copyright (C) 2001 Sistina Software (UK) Limited
- *
- * This file is released under the GPL.
- */
-
-/*
- * 16/08/2001 - First Version [Joe Thornber]
- */
-
-#include "dm.h"
-#include <linux/kmod.h>
-
-struct tt_internal {
-	struct target_type tt;
-
-        struct list_head list;
-        long use;
-};
-
-static LIST_HEAD(_targets);
-static rwlock_t _lock = RW_LOCK_UNLOCKED;
-
-#define DM_MOD_NAME_SIZE 32
-
-static inline struct tt_internal *__find_target_type(const char *name)
-{
-	struct list_head *tmp;
-	struct tt_internal *ti;
-
-	for(tmp = _targets.next; tmp != &_targets; tmp = tmp->next) {
-
-		ti = list_entry(tmp, struct tt_internal, list);
-		if (!strcmp(name, ti->tt.name))
-			return ti;
-	}
-
-	return 0;
-}
-
-static struct tt_internal *get_target_type(const char *name)
-{
-	struct tt_internal *ti;
-
-	read_lock(&_lock);
-	ti = __find_target_type(name);
-
-	if (ti) {
-		if (ti->use == 0 && ti->tt.module)
-			__MOD_INC_USE_COUNT(ti->tt.module);
-		ti->use++;
-	}
-	read_unlock(&_lock);
-
-	return ti;
-}
-
-static void load_module(const char *name)
-{
-	char module_name[DM_MOD_NAME_SIZE] = "dm-";
-
-	/* Length check for strcat() below */
-	if (strlen(name) > (DM_MOD_NAME_SIZE - 4))
-		return;
-
-	strcat(module_name, name);
-	request_module(module_name);
-}
-
-struct target_type *dm_get_target_type(const char *name)
-{
-	struct tt_internal *ti = get_target_type(name);
-
-	if (!ti) {
-		load_module(name);
-		ti = get_target_type(name);
-	}
-
-	return ti ? &ti->tt : 0;
-}
-
-void dm_put_target_type(struct target_type *t)
-{
-	struct tt_internal *ti = (struct tt_internal *) t;
-
-	read_lock(&_lock);
-	if (--ti->use == 0 && ti->tt.module)
-		__MOD_DEC_USE_COUNT(ti->tt.module);
-
-	if (ti->use < 0)
-		BUG();
-	read_unlock(&_lock);
-}
-
-static struct tt_internal *alloc_target(struct target_type *t)
-{
-	struct tt_internal *ti = kmalloc(sizeof(*ti), GFP_KERNEL);
-
-	if (ti) {
-		memset(ti, 0, sizeof(*ti));
-		ti->tt = *t;
-	}
-
-	return ti;
-}
-
-int dm_register_target(struct target_type *t)
-{
-	int rv = 0;
-	struct tt_internal *ti = alloc_target(t);
-
-	if (!ti)
-		return -ENOMEM;
-
-	write_lock(&_lock);
-	if (__find_target_type(t->name))
-		rv = -EEXIST;
-	else
-		list_add(&ti->list, &_targets);
-
-	write_unlock(&_lock);
-	return rv;
-}
-
-int dm_unregister_target(struct target_type *t)
-{
-	struct tt_internal *ti = (struct tt_internal *) t;
-	int rv = -ETXTBSY;
-
-	write_lock(&_lock);
-	if (ti->use == 0) {
-		list_del(&ti->list);
-		kfree(ti);
-		rv = 0;
-	}
-	write_unlock(&_lock);
-
-	return rv;
-}
-
-/*
- * io-err: always fails an io, useful for bringing
- * up LV's that have holes in them.
- */
-static int io_err_ctr(struct dm_table *t, offset_t b, offset_t l,
-		      struct text_region *args, void **context,
-		      dm_error_fn err, void *e_private)
-{
-	*context = 0;
-	return 0;
-}
-
-static void io_err_dtr(struct dm_table *t, void *c)
-{
-	/* empty */
-}
-
-static int io_err_map(struct buffer_head *bh, int rw, void *context)
-{
-	buffer_IO_error(bh);
-	return 0;
-}
-
-static struct target_type error_target = {
-	name: "error",
-	ctr: io_err_ctr,
-	dtr: io_err_dtr,
-	map: io_err_map
-};
-
-
-int dm_target_init(void)
-{
-	return dm_register_target(&error_target);
-}
-
-EXPORT_SYMBOL(dm_register_target);
-EXPORT_SYMBOL(dm_unregister_target);
-

driver/device-mapper/dm.c

@@ -1,920 +0,0 @@
-/*
- * device-mapper.c
- *
- * Copyright (C) 2001 Sistina Software
- *
- * This software is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2, or (at
- * your option) any later version.
- *
- * This software 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 General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with GNU CC; see the file COPYING.  If not, write to
- * the Free Software Foundation, 59 Temple Place - Suite 330,
- * Boston, MA 02111-1307, USA.
- */
-
-/*
- * Changelog
- *
- *    14/08/2001 - First Version [Joe Thornber]
- */
-
-#include "dm.h"
-
-/* defines for blk.h */
-#define MAJOR_NR DM_BLK_MAJOR
-#define DEVICE_NR(device) MINOR(device)	/* has no partition bits */
-#define DEVICE_NAME "device-mapper"	/* name for messaging */
-#define DEVICE_NO_RANDOM		/* no entropy to contribute */
-#define DEVICE_OFF(d)			/* do-nothing */
-
-#include <linux/blk.h>
-#include <linux/blkpg.h>
-
-/* we only need this for the lv_bmap struct definition, not happy */
-#include <linux/lvm.h>
-
-#define MAX_DEVICES 64
-#define DEFAULT_READ_AHEAD 64
-
-const char *_name = "device-mapper";
-int _version[3] = {0, 1, 0};
-
-struct io_hook {
-	struct mapped_device *md;
-	struct target *target;
-	int rw;
-
-	void (*end_io)(struct buffer_head * bh, int uptodate);
-	void *context;
-};
-
-kmem_cache_t *_io_hook_cache;
-
-#define rl down_read(&_dev_lock)
-#define ru up_read(&_dev_lock)
-#define wl down_write(&_dev_lock)
-#define wu up_write(&_dev_lock)
-
-struct rw_semaphore _dev_lock;
-static struct mapped_device *_devs[MAX_DEVICES];
-
-/* block device arrays */
-static int _block_size[MAX_DEVICES];
-static int _blksize_size[MAX_DEVICES];
-static int _hardsect_size[MAX_DEVICES];
-
-const char *_fs_dir = "device-mapper";
-static devfs_handle_t _dev_dir;
-
-static int request(request_queue_t *q, int rw, struct buffer_head *bh);
-static int dm_user_bmap(struct inode *inode, struct lv_bmap *lvb);
-
-/*
- * setup and teardown the driver
- */
-static int dm_init(void)
-{
-	int ret;
-
-	init_rwsem(&_dev_lock);
-
-	if (!_io_hook_cache)
-		_io_hook_cache = kmem_cache_create("dm io hooks",
-						   sizeof(struct io_hook),
-						   0, 0, NULL, NULL);
-
-	if (!_io_hook_cache)
-		return -ENOMEM;
-
-	if ((ret = dm_fs_init()) || (ret = dm_target_init()))
-		return ret;
-
-	/* set up the arrays */
-	read_ahead[MAJOR_NR] = DEFAULT_READ_AHEAD;
-	blk_size[MAJOR_NR] = _block_size;
-	blksize_size[MAJOR_NR] = _blksize_size;
-	hardsect_size[MAJOR_NR] = _hardsect_size;
-
-	if (devfs_register_blkdev(MAJOR_NR, _name, &dm_blk_dops) < 0) {
-		printk(KERN_ERR "%s -- register_blkdev failed\n", _name);
-		return -EIO;
-	}
-
-	blk_queue_make_request(BLK_DEFAULT_QUEUE(MAJOR_NR), request);
-
-	_dev_dir = devfs_mk_dir(0, _fs_dir, NULL);
-
-	printk(KERN_INFO "%s %d.%d.%d initialised\n", _name,
-	       _version[0], _version[1], _version[2]);
-	return 0;
-}
-
-static void dm_exit(void)
-{
-	if (kmem_cache_destroy(_io_hook_cache))
-		WARN("it looks like there are still some io_hooks allocated");
-	_io_hook_cache = 0;
-
-	dm_fs_exit();
-
-	if (devfs_unregister_blkdev(MAJOR_NR, _name) < 0)
-		printk(KERN_ERR "%s -- unregister_blkdev failed\n", _name);
-
-	read_ahead[MAJOR_NR] = 0;
-	blk_size[MAJOR_NR] = 0;
-	blksize_size[MAJOR_NR] = 0;
-	hardsect_size[MAJOR_NR] = 0;
-
-	printk(KERN_INFO "%s %d.%d.%d cleaned up\n", _name,
-	       _version[0], _version[1], _version[2]);
-}
-
-/*
- * block device functions
- */
-static int dm_blk_open(struct inode *inode, struct file *file)
-{
-	int minor = MINOR(inode->i_rdev);
-	struct mapped_device *md;
-
-	if (minor >= MAX_DEVICES)
-		return -ENXIO;
-
-	wl;
-	md = _devs[minor];
-
-	if (!md || !is_active(md)) {
-		wu;
-		return -ENXIO;
-	}
-
-	md->use_count++;
-	wu;
-
-	MOD_INC_USE_COUNT;
-	return 0;
-}
-
-static int dm_blk_close(struct inode *inode, struct file *file)
-{
-	int minor = MINOR(inode->i_rdev);
-	struct mapped_device *md;
-
-	if (minor >= MAX_DEVICES)
-		return -ENXIO;
-
-	wl;
-	md = _devs[minor];
-	if (!md || md->use_count < 1) {
-		WARN("reference count in mapped_device incorrect");
-		wu;
-		return -ENXIO;
-	}
-
-	md->use_count--;
-	wu;
-
-	MOD_DEC_USE_COUNT;
-	return 0;
-}
-
-/* In 512-byte units */
-#define VOLUME_SIZE(minor) (_block_size[(minor)] >> 1)
-
-static int dm_blk_ioctl(struct inode *inode, struct file *file,
-			uint command, ulong a)
-{
-	int minor = MINOR(inode->i_rdev);
-	long size;
-
-	if (minor >= MAX_DEVICES)
-		return -ENXIO;
-
-	switch (command) {
-	case BLKSSZGET:
-	case BLKROGET:
-	case BLKROSET:
-#if 0
-	case BLKELVSET:
-	case BLKELVGET:
-#endif
-		return blk_ioctl(inode->i_dev, command, a);
-		break;
-
-	case BLKGETSIZE:
-		size = VOLUME_SIZE(minor);
-		if (copy_to_user((void *) a, &size, sizeof (long)))
-			return -EFAULT;
-		break;
-
-	case BLKFLSBUF:
-		if (!capable(CAP_SYS_ADMIN))
-			return -EACCES;
-		fsync_dev(inode->i_rdev);
-		invalidate_buffers(inode->i_rdev);
-		return 0;
-
-	case BLKRAGET:
-		if (copy_to_user
-		    ((void *) a, &read_ahead[MAJOR(inode->i_rdev)],
-		     sizeof (long)))
-			return -EFAULT;
-		return 0;
-
-	case BLKRASET:
-		if (!capable(CAP_SYS_ADMIN))
-			return -EACCES;
-		read_ahead[MAJOR(inode->i_rdev)] = a;
-		return 0;
-
-	case BLKRRPART:
-		return -EINVAL;
-
-	case LV_BMAP:
-		return dm_user_bmap(inode, (struct lv_bmap *) a);
-
-	default:
-		WARN("unknown block ioctl %d", command);
-		return -EINVAL;
-	}
-
-	return 0;
-}
-
-static inline struct io_hook *alloc_io_hook(void)
-{
-	return kmem_cache_alloc(_io_hook_cache, GFP_NOIO);
-}
-
-static inline void free_io_hook(struct io_hook *ih)
-{
-	kmem_cache_free(_io_hook_cache, ih);
-}
-
-/*
- * FIXME: need to decide if deferred_io's need
- * their own slab, I say no for now since they are
- * only used when the device is suspended.
- */
-static inline struct deferred_io *alloc_deferred(void)
-{
-	return kmalloc(sizeof(struct deferred_io), GFP_NOIO);
-}
-
-static inline void free_deferred(struct deferred_io *di)
-{
-	kfree(di);
-}
-
-/*
- * call a targets optional error function if
- * an io failed.
- */
-static inline int call_err_fn(struct io_hook *ih, struct buffer_head *bh)
-{
-	dm_err_fn err = ih->target->type->err;
-	if (err)
-		return err(bh, ih->rw, ih->target->private);
-
-	return 0;
-}
-
-/*
- * bh->b_end_io routine that decrements the
- * pending count and then calls the original
- * bh->b_end_io fn.
- */
-static void dec_pending(struct buffer_head *bh, int uptodate)
-{
-	struct io_hook *ih = bh->b_private;
-
-	if (!uptodate && call_err_fn(ih, bh))
-		return;
-
-	if (atomic_dec_and_test(&ih->md->pending))
-		/* nudge anyone waiting on suspend queue */
-		wake_up(&ih->md->wait);
-
-	bh->b_end_io = ih->end_io;
-	bh->b_private = ih->context;
-	free_io_hook(ih);
-
-	bh->b_end_io(bh, uptodate);
-}
-
-/*
- * add the bh to the list of deferred io.
- */
-static int queue_io(struct mapped_device *md, struct buffer_head *bh, int rw)
-{
-	struct deferred_io *di = alloc_deferred();
-
-	if (!di)
-		return -ENOMEM;
-
-	wl;
-	if (test_bit(DM_ACTIVE, &md->state)) {
-		wu;
-		return 0;
-	}
-
-	di->bh = bh;
-	di->rw = rw;
-	di->next = md->deferred;
-	md->deferred = di;
-	wu;
-
-	return 1;
-}
-
-/*
- * do the bh mapping for a given leaf
- */
-static inline int __map_buffer(struct mapped_device *md,
-			       struct buffer_head *bh, int rw, int leaf)
-{
-	int r;
-	dm_map_fn fn;
-	void *context;
-	struct io_hook *ih = NULL;
-	struct target *ti = md->map->targets + leaf;
-
-	fn = ti->type->map;
-	context = ti->private;
-
-	ih = alloc_io_hook();
-
-	if (!ih)
-		return 0;
-
-	ih->md = md;
-	ih->rw = rw;
-	ih->target = ti;
-	ih->end_io = bh->b_end_io;
-	ih->context = bh->b_private;
-
-	r = fn(bh, rw, context);
-
-	if (r > 0) {
-		/* hook the end io request fn */
-		atomic_inc(&md->pending);
-		bh->b_end_io = dec_pending;
-		bh->b_private = ih;
-
-	} else if (r == 0)
-		/* we don't need to hook */
-		free_io_hook(ih);
-
-	else if (r < 0) {
-		free_io_hook(ih);
-		return 0;
-	}
-
-	return 1;
-}
-
-/*
- * search the btree for the correct target.
- */
-static inline int __find_node(struct dm_table *t, struct buffer_head *bh)
-{
-	int l, n = 0, k = 0;
-	offset_t *node;
-
-	for (l = 0; l < t->depth; l++) {
-		n = get_child(n, k);
-		node = get_node(t, l, n);
-
-		for (k = 0; k < KEYS_PER_NODE; k++)
-			if (node[k] >= bh->b_rsector)
-				break;
-	}
-
-	return (KEYS_PER_NODE * n) + k;
-}
-
-static int request(request_queue_t *q, int rw, struct buffer_head *bh)
-{
-	struct mapped_device *md;
-	int r, minor = MINOR(bh->b_rdev);
-
-	if (minor >= MAX_DEVICES)
-		goto bad_no_lock;
-
-	rl;
-	md = _devs[minor];
-
-	if (!md || !md->map)
-		goto bad;
-
-	/* if we're suspended we have to queue this io for later */
-	if (!test_bit(DM_ACTIVE, &md->state)) {
-		ru;
-		r = queue_io(md, bh, rw);
-
-		if (r < 0)
-			goto bad_no_lock;
-
-		else if (r > 0)
-			return 0; /* deferred successfully */
-
-		rl;	/* FIXME: there's still a race here */
-	}
-
-	if (!__map_buffer(md, bh, rw, __find_node(md->map, bh)))
-		goto bad;
-
-	ru;
-	return 1;
-
- bad:
-	ru;
-
- bad_no_lock:
-	buffer_IO_error(bh);
-	return 0;
-}
-
-static int check_dev_size(int minor, unsigned long block)
-{
-	/* FIXME: check this */
-	unsigned long max_sector = (_block_size[minor] << 1) + 1;
-	unsigned long sector = (block + 1) * (_blksize_size[minor] >> 9);
-
-	return (sector > max_sector) ? 0 : 1;
-}
-
-/*
- * creates a dummy buffer head and maps it (for lilo).
- */
-static int do_bmap(kdev_t dev, unsigned long block,
-		   kdev_t *r_dev, unsigned long *r_block)
-{
-	struct mapped_device *md;
-	struct buffer_head bh;
-	int minor = MINOR(dev), r;
-	struct target *t;
-
-	rl;
-	if ((minor >= MAX_DEVICES) || !(md = _devs[minor]) ||
-	    !test_bit(DM_ACTIVE, &md->state)) {
-		r = -ENXIO;
-		goto out;
-	}
-
-	if (!check_dev_size(minor, block)) {
-		r = -EINVAL;
-		goto out;
-	}
-
-	/* setup dummy bh */
-	memset(&bh, 0, sizeof(bh));
-	bh.b_blocknr = block;
-	bh.b_dev = bh.b_rdev = dev;
-	bh.b_size = _blksize_size[minor];
-	bh.b_rsector = block * (bh.b_size >> 9);
-
-	/* find target */
-	t = md->map->targets + __find_node(md->map, &bh);
-
-	/* do the mapping */
-	r = t->type->map(&bh, READ, t->private);
-
-	*r_dev = bh.b_rdev;
-	*r_block = bh.b_rsector / (bh.b_size >> 9);
-
- out:
-	ru;
-	return r;
-}
-
-/*
- * marshals arguments and results between user and
- * kernel space.
- */
-static int dm_user_bmap(struct inode *inode, struct lv_bmap *lvb)
-{
-	unsigned long block, r_block;
-	kdev_t r_dev;
-	int r;
-
-	if (get_user(block, &lvb->lv_block))
-		return -EFAULT;
-
-	if ((r = do_bmap(inode->i_rdev, block, &r_dev, &r_block)))
-		return r;
-
-	if (put_user(kdev_t_to_nr(r_dev), &lvb->lv_dev) ||
-	    put_user(r_block, &lvb->lv_block))
-		return -EFAULT;
-
-	return 0;
-}
-
-/*
- * see if the device with a specific minor # is
- * free.
- */
-static inline int __specific_dev(int minor)
-{
-	if (minor > MAX_DEVICES) {
-		WARN("request for a mapped_device > than MAX_DEVICES");
-		return 0;
-	}
-
-	if (!_devs[minor])
-		return minor;
-
-	return -1;
-}
-
-/*
- * find the first free device.
- */
-static inline int __any_old_dev(void)
-{
-	int i;
-
-	for (i = 0; i < MAX_DEVICES; i++)
-		if (!_devs[i])
-			return i;
-
-	return -1;
-}
-
-/*
- * allocate and initialise a blank device.
- */
-static struct mapped_device *alloc_dev(int minor)
-{
-	struct mapped_device *md = kmalloc(sizeof(*md), GFP_KERNEL);
-
-	if (!md)
-		return 0;
-
-	memset(md, 0, sizeof (*md));
-
-	wl;
-	minor = (minor < 0) ? __any_old_dev() : __specific_dev(minor);
-
-	if (minor < 0) {
-		WARN("no free devices available");
-		wu;
-		kfree(md);
-		return 0;
-	}
-
-	md->dev = MKDEV(DM_BLK_MAJOR, minor);
-	md->name[0] = '\0';
-	md->state = 0;
-
-	init_waitqueue_head(&md->wait);
-
-	_devs[minor] = md;
-	wu;
-
-	return md;
-}
-
-/*
- * open a device so we can use it as a map
- * destination.
- */
-static int open_dev(struct dm_dev *d)
-{
-       int err;
-
-       if (d->bd)
-	       BUG();
-
-       if (!(d->bd = bdget(kdev_t_to_nr(d->dev))))
-               return -ENOMEM;
-
-       if ((err = blkdev_get(d->bd, FMODE_READ|FMODE_WRITE, 0, BDEV_FILE))) {
-               bdput(d->bd);
-               return err;
-       }
-
-       return 0;
-}
-
-/*
- * close a device that we've been using.
- */
-static void close_dev(struct dm_dev *d)
-{
-	if (!d->bd)
-		return;
-
-	blkdev_put(d->bd, BDEV_FILE);
-	bdput(d->bd);
-	d->bd = 0;
-}
-
-/*
- * Close a list of devices.
- */
-static void close_devices(struct list_head *devices)
-{
-	struct list_head *tmp;
-
-	for (tmp = devices->next; tmp != devices; tmp = tmp->next) {
-		struct dm_dev *dd = list_entry(tmp, struct dm_dev, list);
-		close_dev(dd);
-	}
-}
-
-/*
- * Open a list of devices.
- */
-static int open_devices(struct list_head *devices)
-{
-	int r = 0;
-	struct list_head *tmp;
-
-	for (tmp = devices->next; tmp != devices; tmp = tmp->next) {
-		struct dm_dev *dd = list_entry(tmp, struct dm_dev, list);
-		if ((r = open_dev(dd)))
-			goto bad;
-	}
-	return 0;
-
- bad:
-	close_devices(devices);
-	return r;
-}
-
-
-struct mapped_device *dm_find_by_minor(int minor)
-{
-	struct mapped_device *md;
-
-	rl;
-	md = _devs[minor];
-	ru;
-
-	return md;
-}
-
-static int register_device(struct mapped_device *md)
-{
-	md->devfs_entry =
-		devfs_register(_dev_dir, md->name, DEVFS_FL_CURRENT_OWNER,
-			       MAJOR(md->dev), MINOR(md->dev),
-			       S_IFBLK | S_IRUSR | S_IWUSR | S_IRGRP,
-			       &dm_blk_dops, NULL);
-
-	if (!md->devfs_entry)
-		return -ENOMEM;
-
-	return 0;
-}
-
-static int unregister_device(struct mapped_device *md)
-{
-	devfs_unregister(md->devfs_entry);
-	return 0;
-}
-
-/*
- * constructor for a new device
- */
-struct mapped_device *dm_create(const char *name, int minor)
-{
-	int r;
-	struct mapped_device *md;
-
-	if (minor >= MAX_DEVICES)
-		return ERR_PTR(-ENXIO);
-
-	if (!(md = alloc_dev(minor)))
-		return ERR_PTR(-ENXIO);
-
-	wl;
-	strcpy(md->name, name);
-	_devs[minor] = md;
-	if ((r = register_device(md))) {
-		wu;
-		return ERR_PTR(r);
-	}
-	wu;
-
-	return md;
-}
-
-/*
- * destructor for the device.  md->map is
- * deliberately not destroyed, dm-fs should manage
- * table objects.
- */
-int dm_remove(struct mapped_device *md)
-{
-	int minor, r;
-
-	wl;
-	if (md->use_count) {
-		wu;
-		return -EPERM;
-	}
-
-	if ((r = unregister_device(md))) {
-		wu;
-		return r;
-	}
-
-	minor = MINOR(md->dev);
-	_devs[minor] = 0;
-	wu;
-
-	kfree(md);
-
-	return 0;
-}
-
-/*
- * the hardsect size for a mapped device is the
- * smallest hard sect size from the devices it
- * maps onto.
- */
-static int __find_hardsect_size(struct list_head *devices)
-{
-	int result = INT_MAX, size;
-	struct list_head *tmp;
-
-	for (tmp = devices->next; tmp != devices; tmp = tmp->next) {
-		struct dm_dev *dd = list_entry(tmp, struct dm_dev, list);
-		size = get_hardsect_size(dd->dev);
-		if (size < result)
-			result = size;
-	}
-	return result;
-}
-
-/*
- * Bind a table to the device.
- */
-void __bind(struct mapped_device *md, struct dm_table *t)
-{
-	int minor = MINOR(md->dev);
-
-	md->map = t;
-
-	/* in k */
-	_block_size[minor] = (t->highs[t->num_targets - 1] + 1) >> 1;
-
-	_blksize_size[minor] = BLOCK_SIZE;
-	_hardsect_size[minor] = __find_hardsect_size(&t->devices);
-	register_disk(NULL, md->dev, 1, &dm_blk_dops, _block_size[minor]);
-}
-
-/*
- * requeue the deferred buffer_heads by calling
- * generic_make_request.
- */
-static void __flush_deferred_io(struct mapped_device *md)
-{
-	struct deferred_io *c, *n;
-
-	for (c = md->deferred, md->deferred = 0; c; c = n) {
-		n = c->next;
-		generic_make_request(c->rw, c->bh);
-		free_deferred(c);
-	}
-}
-
-/*
- * make the device available for use, if was
- * previously suspended rather than newly created
- * then all queued io is flushed
- */
-int dm_activate(struct mapped_device *md, struct dm_table *table)
-{
-	int r;
-
-	/* check that the mapping has at least been loaded. */
-	if (!table->num_targets)
-		return -EINVAL;
-
-	wl;
-
-	/* you must be deactivated first */
-	if (is_active(md)) {
-		wu;
-		return -EPERM;
-	}
-
-	__bind(md, table);
-
-	if ((r = open_devices(&md->map->devices))) {
-		wu;
-		return r;
-	}
-
-	set_bit(DM_ACTIVE, &md->state);
-	__flush_deferred_io(md);
-	wu;
-
-	return 0;
-}
-
-/*
- * Deactivate the device, the device must not be
- * opened by anyone.
- */
-int dm_deactivate(struct mapped_device *md)
-{
-	rl;
-	if (md->use_count) {
-		ru;
-		return -EPERM;
-	}
-
-	fsync_dev(md->dev);
-
-	ru;
-
-	wl;
-	if (md->use_count) {
-		/* drat, somebody got in quick ... */
-		wu;
-		return -EPERM;
-	}
-
-	close_devices(&md->map->devices);
-	md->map = 0;
-	clear_bit(DM_ACTIVE, &md->state);
-	wu;
-
-	return 0;
-}
-
-/*
- * We need to be able to change a mapping table
- * under a mounted filesystem.  for example we
- * might want to move some data in the background.
- * Before the table can be swapped with
- * dm_bind_table, dm_suspend must be called to
- * flush any in flight buffer_heads and ensure
- * that any further io gets deferred.
- */
-void dm_suspend(struct mapped_device *md)
-{
-	DECLARE_WAITQUEUE(wait, current);
-
-	wl;
-	if (!is_active(md)) {
-		wu;
-		return;
-	}
-
-	clear_bit(DM_ACTIVE, &md->state);
-	wu;
-
-	/* wait for all the pending io to flush */
-	add_wait_queue(&md->wait, &wait);
-	current->state = TASK_UNINTERRUPTIBLE;
-	do {
-		wl;
-		if (!atomic_read(&md->pending))
-			break;
-
-		wu;
-		schedule();
-
-	} while (1);
-
-	current->state = TASK_RUNNING;
-	remove_wait_queue(&md->wait, &wait);
-	close_devices(&md->map->devices);
-
-	md->map = 0;
-	wu;
-}
-
-struct block_device_operations dm_blk_dops = {
-	open:	  dm_blk_open,
-	release:  dm_blk_close,
-	ioctl:	  dm_blk_ioctl
-};
-
-/*
- * module hooks
- */
-module_init(dm_init);
-module_exit(dm_exit);
-
-MODULE_DESCRIPTION("device-mapper driver");
-MODULE_AUTHOR("Joe Thornber <thornber@btconnect.com>");
-
-/*
- * Local variables:
- * c-file-style: "linux"
- * End:
- */

driver/device-mapper/dm.h

@@ -1,276 +0,0 @@
-/*
- * dm.h
- *
- * Copyright (C) 2001 Sistina Software
- *
- * This file is released under the GPL.
- */
-
-/*
- * Internal header file for device mapper
- *
- * Changelog
- *
- *     16/08/2001 - First version [Joe Thornber]
- */
-
-/*
- * This driver attempts to provide a generic way of specifying logical
- * devices which are mapped onto other devices.
- *
- * It does this by mapping sections of the logical device onto 'targets'.
- *
- * When the logical device is accessed the make_request function looks up
- * the correct target for the given sector, and then asks this target
- * to do the remapping.
- *
- * (dm-table.c) A btree like structure is used to hold the sector
- * range -> target mapping.  Because we know all the entries in the
- * btree in advance we can make a very compact tree, omitting pointers
- * to child nodes, (child nodes locations can be calculated). Each
- * node of the btree is 1 level cache line in size, this gives a small
- * performance boost.
- *
- * A userland test program for the btree gave the following results on a
- * 1 Gigahertz Athlon machine:
- *
- * entries in btree               lookups per second
- * ----------------               ------------------
- * 5                              25,000,000
- * 1000                           7,700,000
- * 10,000,000                     3,800,000
- *
- * Of course these results should be taken with a pinch of salt; the
- * lookups were sequential and there were no other applications (other
- * than X + emacs) running to give any pressure on the level 1 cache.
- *
- * Typical LVM users would find they have very few targets for each
- * LV (probably less than 10).
- *
- * (dm-target.c) Target types are not hard coded, instead the
- * register_mapping_type function should be called.  A target type is
- * specified using three functions (see the header):
- *
- * dm_ctr_fn - takes a string and contructs a target specific piece of
- *             context data.
- * dm_dtr_fn - destroy contexts.
- * dm_map_fn - function that takes a buffer_head and some previously
- *             constructed context and performs the remapping.
- *
- * Currently there are two two trivial mappers, which are
- * automatically registered: 'linear', and 'io_error'.  Linear alone
- * is enough to implement most LVM features (omitting striped volumes
- * and snapshots).
- *
- * (dm-fs.c) The driver is controlled through a /proc interface:
- * /proc/device-mapper/control allows you to create and remove devices
- * by 'cat'ing a line of the following format:
- *
- * create <device name> [minor no]
- * remove <device name>
- *
- * /proc/device-mapper/<device name> accepts the mapping table:
- *
- * begin
- * <sector start> <length> <target name> <target args>...
- * ...
- * end
- *
- * The begin/end lines are nasty, they should be handled by open/close
- * for the file.
- *
- * At the moment the table assumes 32 bit keys (sectors), the move to
- * 64 bits will involve no interface changes, since the tables will be
- * read in as ascii data.  A different table implementation can
- * therefor be provided at another time.  Either just by changing offset_t
- * to 64 bits, or maybe implementing a structure which looks up the keys in
- * stages (ie, 32 bits at a time).
- *
- * More interesting targets:
- *
- * striped mapping; given a stripe size and a number of device regions
- * this would stripe data across the regions.  Especially useful, since
- * we could limit each striped region to a 32 bit area and then avoid
- * nasty 64 bit %'s.
- *
- * mirror mapping (reflector ?); would set off a kernel thread slowly
- * copying data from one region to another, ensuring that any new
- * writes got copied to both destinations correctly.  Great for
- * implementing pvmove.  Not sure how userland would be notified that
- * the copying process had completed.  Possibly by reading a /proc entry
- * for the LV.  Could also use poll() for this kind of thing.
- */
-
-
-#ifndef DM_INTERNAL_H
-#define DM_INTERNAL_H
-
-#include <linux/version.h>
-#include <linux/major.h>
-#include <linux/iobuf.h>
-#include <linux/module.h>
-#include <linux/fs.h>
-#include <linux/slab.h>
-#include <linux/vmalloc.h>
-#include <linux/compatmac.h>
-#include <linux/cache.h>
-#include <linux/devfs_fs_kernel.h>
-#include <linux/ctype.h>
-#include <linux/device-mapper.h>
-#include <linux/list.h>
-
-#define MAX_DEPTH 16
-#define NODE_SIZE L1_CACHE_BYTES
-#define KEYS_PER_NODE (NODE_SIZE / sizeof(offset_t))
-#define CHILDREN_PER_NODE (KEYS_PER_NODE + 1)
-#define DM_NAME_LEN 128
-#define MAX_TARGET_LINE 256
-
-enum {
-	DM_BOUND = 0,		/* device has been bound to a table */
-	DM_ACTIVE,		/* device is running */
-};
-
-
-/*
- * list of devices that a metadevice uses
- * and hence should open/close.
- */
-struct dm_dev {
-	atomic_t count;
-	struct list_head list;
-
-	kdev_t dev;
-	struct block_device *bd;
-};
-
-/*
- * io that had to be deferred while we were
- * suspended
- */
-struct deferred_io {
-	int rw;
-	struct buffer_head *bh;
-	struct deferred_io *next;
-};
-
-/*
- * btree leaf, these do the actual mapping
- */
-struct target {
-	struct target_type *type;
-	void *private;
-};
-
-/*
- * the btree
- */
-struct dm_table {
-	/* btree table */
-	int depth;
-	int counts[MAX_DEPTH];	/* in nodes */
-	offset_t *index[MAX_DEPTH];
-
-	int num_targets;
-	int num_allocated;
-	offset_t *highs;
-	struct target *targets;
-
-	/* a list of devices used by this table */
-	struct list_head devices;
-};
-
-/*
- * the actual device struct
- */
-struct mapped_device {
-	kdev_t dev;
-	char name[DM_NAME_LEN];
-	struct inode *inode;
-
-	int use_count;
-	int state;
-
-	/* a list of io's that arrived while we were suspended */
-	atomic_t pending;
-	wait_queue_head_t wait;
-	struct deferred_io *deferred;
-
-	struct dm_table *map;
-
-	/* used by dm-fs.c */
-	devfs_handle_t devfs_entry;
-};
-
-extern struct block_device_operations dm_blk_dops;
-
-
-/* dm-target.c */
-int dm_target_init(void);
-struct target_type *dm_get_target_type(const char *name);
-void dm_put_target_type(struct target_type *t);
-
-/* dm.c */
-struct mapped_device *dm_find_by_minor(int minor);
-
-struct mapped_device *dm_create(const char *name, int minor);
-int dm_remove(struct mapped_device *md);
-
-int dm_activate(struct mapped_device *md, struct dm_table *t);
-int dm_deactivate(struct mapped_device *md);
-
-void dm_suspend(struct mapped_device *md);
-
-
-/* dm-table.c */
-struct dm_table *dm_table_create(void);
-void dm_table_destroy(struct dm_table *t);
-
-int dm_table_add_target(struct dm_table *t, offset_t high,
-			struct target_type *type, void *private);
-int dm_table_complete(struct dm_table *t);
-
-/* dm-parse.c */
-typedef int (*extract_line_fn)(struct text_region *line,
-			       void *private);
-
-struct dm_table *dm_parse(extract_line_fn line_fn, void *line_private,
-			  dm_error_fn err_fn, void *err_private);
-
-
-static inline int dm_empty_tok(struct text_region *txt)
-{
-	return txt->b >= txt->e;
-}
-
-/* dm-fs.c */
-int dm_fs_init(void);
-void dm_fs_exit(void);
-
-
-
-#define WARN(f, x...) printk(KERN_WARNING "device-mapper: " f "\n" , ## x)
-
-/*
- * calculate the index of the child node of the
- * n'th node k'th key.
- */
-static inline int get_child(int n, int k)
-{
-	return (n * CHILDREN_PER_NODE) + k;
-}
-
-/*
- * returns the n'th node of level l from table t.
- */
-static inline offset_t *get_node(struct dm_table *t, int l, int n)
-{
-	return t->index[l] + (n * KEYS_PER_NODE);
-}
-
-static inline int is_active(struct mapped_device *md)
-{
-	return test_bit(DM_ACTIVE, &md->state);
-}
-
-#endif

driver/device-mapper/dmfs-error.c

@@ -1,156 +0,0 @@
-/*
- * dmfs-error.c
- *
- * Copyright (C) 2001 Sistina Software
- *
- * This software is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2, or (at
- * your option) any later version.
- *
- * This software 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 General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with GNU CC; see the file COPYING.  If not, write to
- * the Free Software Foundation, 59 Temple Place - Suite 330,
- * Boston, MA 02111-1307, USA.
- */
-
-#include <linux/config.h>
-#include <linux/list.h>
-#include <linux/fs.h>
-
-#include "dm.h"
-
-struct dmfs_error {
-	struct list_head list;
-	unsigned len;
-	char *msg;
-};
-
-void dmfs_add_error(struct dm_table *t, unsigned num, char *str)
-{
-	int len = strlen(str) + sizeof(struct dmfs_error) + 12;
-	struct dmfs_error *e = kmalloc(len, GFP_KERNEL);
-	if (e) {
-		e->msg = (char *)(e + 1);
-		e->len = sprintf(e->msg, "%8u: %s\n", num, str);
-		list_add(&e->list, &t->errors);
-	}
-}
-
-void dmfs_zap_errors(struct dm_table *t)
-{
-	struct dmfs_error *e;
-
-	while(!list_empty(&t->errors)) {
-		e = list_entry(t->errors.next, struct dmfs_error, list);
-		list_del(&e->list);
-		kfree(e);
-	}
-}
-
-static struct dmfs_error *find_initial_message(struct dm_table *t, loff_t *pos)
-{
-	struct dmfs_error *e;
-	struct list_head *tmp, *head;
-
-	tmp = head = &t->errors;
-	for(;;) {
-		tmp = tmp->next;
-		if (tmp == head)
-			break;
-		e = list_entry(tmp, struct dmfs_error, list);
-		if (*pos < e->len)
-			return e;
-		(*pos) -= e->len;
-	}
-
-	return NULL;
-}
-
-static int copy_sequence(struct dm_table *t, struct dmfs_error *e, char *buf,
-			size_t size, loff_t offset)
-{
-	char *from;
-	int amount;
-	int copied = 0;
-
-	do {
-		from = e->msg + offset;
-		amount = e->len - offset;
-
-		if (copy_to_user(buf, from, amount))
-			return -EFAULT;
-
-		buf += amount;
-		copied += amount;
-		size -= amount;
-		offset = 0;
-
-		if (e->list.next == &t->errors)
-			break;
-		e = list_entry(e->list.next, struct dmfs_error, list);
-	} while(size > 0);
-
-	return amount;
-}
-
-static ssize_t dmfs_error_read(struct file *file, char *buf, size_t size, loff_t *pos)
-{
-	struct dmfs_i *dmi = DMFS_I(file->f_dentry->d_parent->d_inode);
-	struct dm_table *t = dmi->table;
-	int copied = 0;
-	loff_t offset = *pos;
-
-	if (!access_ok(VERIFY_WRITE, buf, size))
-		return -EFAULT;
-
-	down(&dmi->sem);
-	if (dmi->table) {
-		struct dmfs_error *e = find_initial_message(t, &offset);
-		if (e) {
-			copied = copy_sequence(t, e, buf, size, offset);
-			if (copied > 0)
-				(*pos) += copied;
-		}
-	}
-	up(&dmi->sem);
-	return copied;
-}
-
-static int dmfs_error_sync(struct file *file, struct dentry *dentry, int datasync)
-{
-	return 0;
-}
-
-static struct file_operations dmfs_error_file_operations = {
-	read:		dmfs_error_read,
-	fsync:		dmfs_error_sync,
-};
-
-static struct inode_operations dmfs_error_inode_operations = {
-};
-
-struct inode *dmfs_create_error(struct inode *dir, int mode)
-{
-	struct inode *inode = new_inode(dir->i_sb);
-
-	if (inode) {
-		inode->i_mode = mode | S_IFREG;
-		inode->i_uid = current->fsuid;
-		inode->i_gid = current->fsgid;
-		inode->i_blksize = PAGE_CACHE_SIZE;
-		inode->i_blocks = 0;
-		inode->i_rdev = NODEV;
-		inode->i_atime = inode->i_ctime = inode->i_mtime = CURRENT_TIME;
-		inode->i_fop = &dmfs_error_file_operations;
-		inode->i_op = &dmfs_error_inode_operations;
-	}
-
-	return inode;
-}
-

driver/device-mapper/dmfs-lv.c

@@ -1,282 +0,0 @@
-/*
- * dmfs-lv.c
- *
- * Copyright (C) 2001 Sistina Software
- *
- * This software is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2, or (at
- * your option) any later version.
- *
- * This software 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 General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with GNU CC; see the file COPYING.  If not, write to
- * the Free Software Foundation, 59 Temple Place - Suite 330,
- * Boston, MA 02111-1307, USA.
- */
-
-/* Heavily based upon ramfs */
-
-#include <linux/config.h>
-#include <linux/ctype.h>
-#include <linux/fs.h>
-
-#include "dm.h"
-
-extern struct address_space_operations dmfs_address_space_operations;
-extern struct inode *dmfs_create_tdir(struct super_block *sb, int mode);
-
-struct dentry *dmfs_verify_name(struct inode *dir, const char *name)
-{
-	struct nameidata nd;
-	int err = -ENOENT;
-	struct file file;
-	struct dentry *dentry;
-
-	memset(&file, 0, sizeof(struct file));
-
-	if (!path_init(name, LOOKUP_FOLLOW, &nd))
-		return ERR_PTR(-EINVAL);
-
-	err = path_walk(name, &nd);
-	if (err)
-		goto err_out;
-
-	err = -EINVAL;
-	if (nd.mnt->mnt_sb != dir->i_sb)
-		goto err_out;
-
-	if (nd.dentry->d_parent->d_inode != dir)
-		goto err_out;
-
-	err = -ENODATA;
-	if (DMFS_I(nd.dentry->d_inode) == NULL || 
-	    DMFS_I(nd.dentry->d_inode)->table == NULL)
-		goto err_out;
-
-	if (!list_empty(&(DMFS_I(nd.dentry->d_inode)->table->errors)))
-		goto err_out;
-
-	dentry = nd.dentry;
-	file.f_dentry = nd.dentry->d_parent;
-	err = deny_write_access(&file);
-	if (err)
-		goto err_out;
-
-	dget(dentry);
-	path_release(&nd);
-	return dentry;
-err_out:
-	path_release(&nd);
-	return ERR_PTR(err);
-}
-
-struct inode *dmfs_create_symlink(struct inode *dir, int mode)
-{
-	struct inode *inode = dmfs_new_inode(dir->i_sb, mode | S_IFLNK);
-
-	if (inode) {
-		inode->i_mapping->a_ops = &dmfs_address_space_operations;
-		inode->i_op = &page_symlink_inode_operations;
-	}
-
-	return inode;
-}
-
-static int dmfs_lv_unlink(struct inode *dir, struct dentry *dentry)
-{
-	struct inode *inode = dentry->d_inode;
-	struct file file = { f_dentry: dentry->d_parent };
-
-	if (!(inode->i_mode & S_IFLNK))
-		return -EINVAL;
-
-	dm_suspend(DMFS_I(dir)->md);
-	allow_write_access(&file);
-	inode->i_nlink--;
-	dput(dentry);
-	return 0;
-}
-
-static int dmfs_lv_symlink(struct inode *dir, struct dentry *dentry, 
-			   const char *symname)
-{
-	struct inode *inode;
-	struct dentry *de;
-	int rv;
-	int l;
-
-	if (dentry->d_name.len != 6 || 
-	    memcmp(dentry->d_name.name, "ACTIVE", 6) != 0)
-		return -EINVAL;
-
-	de = dmfs_verify_name(dir, symname);
-	if (IS_ERR(de))
-		return PTR_ERR(de);
-
-	inode = dmfs_create_symlink(dir, S_IRWXUGO);
-	if (inode == NULL) {
-		rv = -ENOSPC;
-		goto out_allow_write;
-	}
-
-	DMFS_I(inode)->dentry = de;
-	d_instantiate(dentry, inode);
-	dget(dentry);
-
-	l = strlen(symname) + 1;
-	rv = block_symlink(inode, symname, l);
-	if (rv)
-		goto out_dput;
-
-	rv = dm_activate(DMFS_I(dir)->md, DMFS_I(de->d_inode)->table);
-	if (rv)
-		goto out_dput;
-
-	return rv;
-
-out_dput:
-	DMFS_I(inode)->dentry = NULL;
-out_allow_write:
-	{
-		struct file file = { f_dentry: de->d_parent };
-		allow_write_access(&file);
-		dput(de);
-	}
-	return rv;
-}
-
-static int is_identifier(const char *str, int len)
-{
-	while(len--) {
-		if (!isalnum(*str) && *str != '_')
-			return 0;
-		str++;
-	}
-	return 1;
-}
-
-static int dmfs_lv_mkdir(struct inode *dir, struct dentry *dentry, int mode)
-{
-	struct inode *inode;
-	int rv = -ENOSPC;
-
-	if (dentry->d_name.len >= DM_NAME_LEN)
-		return -EINVAL;
-
-	if (!is_identifier(dentry->d_name.name, dentry->d_name.len))
-		return -EPERM;
-
-	if (dentry->d_name.len == 6 && 
-	    memcmp(dentry->d_name.name, "ACTIVE", 6) == 0)
-		return -EINVAL;
-
-	if (dentry->d_name.name[0] == '.')
-		return -EINVAL;
-
-	inode = dmfs_create_tdir(dir->i_sb, mode);
-	if (inode) {
-		d_instantiate(dentry, inode);
-		dget(dentry);
-		rv = 0;
-	}
-	return rv;
-}
-
-/*
- * if u.generic_ip is not NULL, then it indicates an inode which
- * represents a table. If it is NULL then the inode is a virtual
- * file and should be deleted along with the directory.
- */
-static inline int positive(struct dentry *dentry)
-{
-	return dentry->d_inode && !d_unhashed(dentry);
-}
-
-static int empty(struct dentry *dentry)
-{
-	struct list_head *list;
-
-	spin_lock(&dcache_lock);
-	list = dentry->d_subdirs.next;
-
-	while(list != &dentry->d_subdirs) {
-		struct dentry *de = list_entry(list, struct dentry, d_child);
-
-		if (positive(de)) {
-			spin_unlock(&dcache_lock);
-			return 0;
-		}
-		list = list->next;
-	}
-	spin_unlock(&dcache_lock);
-	return 1;
-}
-
-static int dmfs_lv_rmdir(struct inode *dir, struct dentry *dentry)
-{
-	int ret = -ENOTEMPTY;
-
-	if (empty(dentry)) {
-		struct inode *inode = dentry->d_inode;
-		inode->i_nlink--;
-		dput(dentry);
-		ret = 0;
-	}
-
-	return ret;
-}
-
-static struct dentry *dmfs_lv_lookup(struct inode *dir, struct dentry *dentry)
-{
-	d_add(dentry, NULL);
-	return NULL;
-}
-
-static int dmfs_lv_sync(struct file *file, struct dentry *dentry, int datasync)
-{
-	return 0;
-}
-
-static struct file_operations dmfs_lv_file_operations = {
-	read:		generic_read_dir,
-	readdir:	dcache_readdir,
-	fsync:		dmfs_lv_sync,
-};
-
-static struct inode_operations dmfs_lv_inode_operations = {
-	lookup:		dmfs_lv_lookup,
-	unlink:		dmfs_lv_unlink,
-	symlink:	dmfs_lv_symlink,
-	mkdir:		dmfs_lv_mkdir,
-	rmdir:		dmfs_lv_rmdir,
-};
-
-struct inode *dmfs_create_lv(struct super_block *sb, int mode, struct dentry *dentry)
-{
-	struct inode *inode = dmfs_new_inode(sb, mode | S_IFDIR);
-	struct mapped_device *md;
-	const char *name = dentry->d_name.name;
-	char tmp_name[DM_NAME_LEN + 1];
-
-	if (inode) {
-		inode->i_fop = &dmfs_lv_file_operations;
-		inode->i_op = &dmfs_lv_inode_operations;
-		memcpy(tmp_name, name, dentry->d_name.len);
-		tmp_name[dentry->d_name.len] = 0;
-		md = dm_create(tmp_name, -1);
-		if (IS_ERR(md)) {
-			iput(inode);
-			return ERR_PTR(PTR_ERR(md));
-		}
-		DMFS_I(inode)->md = md;
-	}
-
-	return inode;
-}
-
-

driver/device-mapper/dmfs-root.c

@@ -1,164 +0,0 @@
-/*
- * dmfs-root.c
- *
- * Copyright (C) 2001 Sistina Software
- *
- * This software is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2, or (at
- * your option) any later version.
- *
- * This software 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 General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with GNU CC; see the file COPYING.  If not, write to
- * the Free Software Foundation, 59 Temple Place - Suite 330,
- * Boston, MA 02111-1307, USA.
- */
-
-/* Heavily based upon ramfs */
-
-#include <linux/config.h>
-#include <linux/ctype.h>
-#include <linux/fs.h>
-
-#include "dm.h"
-
-extern struct inode *dmfs_create_lv(struct super_block *sb, int mode, struct dentry *dentry);
-
-static int is_identifier(const char *str, int len)
-{
-	while(len--) {
-		if (!isalnum(*str) && *str != '_')
-			return 0;
-		str++;
-	}
-	return 1;
-}
-
-static int dmfs_root_mkdir(struct inode *dir, struct dentry *dentry, int mode)
-{
-	struct inode *inode;
-	int rv = -ENOSPC;
-
-	if (dentry->d_name.len >= DM_NAME_LEN)
-		return -EINVAL;
-
-	if (!is_identifier(dentry->d_name.name, dentry->d_name.len))
-		return -EPERM;
-
-	if (dentry->d_name.name[0] == '.')
-		return -EINVAL;
-
-	inode = dmfs_create_lv(dir->i_sb, mode, dentry);
-	if (inode) {
-		d_instantiate(dentry, inode);
-		dget(dentry);
-		rv = 0;
-	}
-	return rv;
-}
-
-/*
- * if u.generic_ip is not NULL, then it indicates an inode which
- * represents a table. If it is NULL then the inode is a virtual
- * file and should be deleted along with the directory.
- */
-static inline int positive(struct dentry *dentry)
-{
-	return dentry->d_inode && !d_unhashed(dentry);
-}
-
-static int empty(struct dentry *dentry)
-{
-	struct list_head *list;
-
-	spin_lock(&dcache_lock);
-	list = dentry->d_subdirs.next;
-
-	while(list != &dentry->d_subdirs) {
-		struct dentry *de = list_entry(list, struct dentry, d_child);
-
-		if (positive(de)) {
-			spin_unlock(&dcache_lock);
-			return 0;
-		}
-		list = list->next;
-	}
-	spin_unlock(&dcache_lock);
-	return 1;
-}
-
-static int dmfs_root_rmdir(struct inode *dir, struct dentry *dentry)
-{
-	int ret = -ENOTEMPTY;
-
-	if (empty(dentry)) {
-		struct inode *inode = dentry->d_inode;
-		ret = dm_deactivate(DMFS_I(inode)->md);
-		if (ret == 0) {
-			inode->i_nlink--;
-			dput(dentry);
-		}
-	}
-
-	return ret;
-}
-
-static struct dentry *dmfs_root_lookup(struct inode *dir, struct dentry *dentry)
-{
-	d_add(dentry, NULL);
-	return NULL;
-}
-
-static int dmfs_root_rename(struct inode *old_dir, struct dentry *old_dentry,
-			struct inode *new_dir, struct dentry *new_dentry)
-{
-	/* Can only rename - not move between directories! */
-	if (old_dir != new_dir)
-		return -EPERM;
-
-	return -EINVAL; /* FIXME: a change of LV name here */
-}
-
-static int dmfs_root_sync(struct file *file, struct dentry *dentry, int datasync)
-{
-	return 0;
-}
-
-static struct file_operations dmfs_root_file_operations = {
-	read:		generic_read_dir,
-	readdir:	dcache_readdir,
-	fsync:		dmfs_root_sync,
-};
-
-static struct inode_operations dmfs_root_inode_operations = {
-	lookup:		dmfs_root_lookup,
-	mkdir:		dmfs_root_mkdir,
-	rmdir:		dmfs_root_rmdir,
-	rename:		dmfs_root_rename,
-};
-
-struct inode *dmfs_create_root(struct super_block *sb, int mode)
-{
-	struct inode *inode = new_inode(sb);
-
-	if (inode) {
-		inode->i_mode = mode | S_IFDIR;
-		inode->i_uid = current->fsuid;
-		inode->i_gid = current->fsgid;
-		inode->i_blksize = PAGE_CACHE_SIZE;
-		inode->i_blocks = 0;
-		inode->i_rdev = NODEV;
-		inode->i_atime = inode->i_ctime = inode->i_mtime = CURRENT_TIME;
-		inode->i_fop = &dmfs_root_file_operations;
-		inode->i_op = &dmfs_root_inode_operations;
-	}
-
-	return inode;
-}
-
-

driver/device-mapper/dmfs-status.c

@@ -1,63 +0,0 @@
-/*
- * dmfs-status.c
- *
- * Copyright (C) 2001 Sistina Software
- *
- * This software is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2, or (at
- * your option) any later version.
- *
- * This software 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 General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with GNU CC; see the file COPYING.  If not, write to
- * the Free Software Foundation, 59 Temple Place - Suite 330,
- * Boston, MA 02111-1307, USA.
- */
-
-#include <linux/config.h>
-#include <linux/fs.h>
-
-#include "dm.h"
-
-static ssize_t dmfs_status_read(struct file *file, char *buf, size_t size, loff_t *pos)
-{
-	return 0;
-}
-
-static int dmfs_status_sync(struct file *file, struct dentry *dentry, int datasync)
-{
-	return 0;
-}
-
-static struct file_operations dmfs_status_file_operations = {
-	read:		dmfs_status_read,
-	fsync:		dmfs_status_sync,
-};
-
-static struct inode_operations dmfs_status_inode_operations = {
-};
-
-struct inode *dmfs_create_status(struct inode *dir, int mode)
-{
-	struct inode *inode = new_inode(dir->i_sb);
-
-	if (inode) {
-		inode->i_mode = mode | S_IFREG;
-		inode->i_uid = current->fsuid;
-		inode->i_gid = current->fsgid;
-		inode->i_blksize = PAGE_CACHE_SIZE;
-		inode->i_blocks = 0;
-		inode->i_rdev = NODEV;
-		inode->i_atime = inode->i_ctime = inode->i_mtime = CURRENT_TIME;
-		inode->i_fop = &dmfs_status_file_operations;
-		inode->i_op = &dmfs_status_inode_operations;
-	}
-
-	return inode;
-}
-

driver/device-mapper/dmfs-super.c

@@ -1,112 +0,0 @@
-/*
- * dmfs-super.c
- *
- * Copyright (C) 2001 Sistina Software
- *
- * This software is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2, or (at
- * your option) any later version.
- *
- * This software 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 General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with GNU CC; see the file COPYING.  If not, write to
- * the Free Software Foundation, 59 Temple Place - Suite 330,
- * Boston, MA 02111-1307, USA.
- */
-
-#include <linux/config.h>
-#include <linux/fs.h>
-
-#include "dm.h"
-
-#define DMFS_MAGIC 0x444D4653
-
-extern struct inode *dmfs_create_root(struct super_block *sb, int);
-
-static int dmfs_statfs(struct super_block *sb, struct statfs *buf)
-{
-	buf->f_type = sb->s_magic;
-	buf->f_bsize = sb->s_blocksize;
-	buf->f_namelen = DM_NAME_LEN - 1;
-
-	return 0;
-}
-
-static void dmfs_delete_inode(struct inode *inode)
-{
-	struct dmfs_i *dmi = DMFS_I(inode);
-
-	if (dmi) {
-		if (dmi->md)
-			dm_remove(dmi->md);
-		if (dmi->table)
-			dm_table_destroy(dmi->table);
-		if (dmi->dentry)
-			dput(dmi->dentry);
-		kfree(dmi);
-	}
-
-	inode->u.generic_ip = NULL;
-	clear_inode(inode);
-}
-
-static struct super_operations dmfs_super_operations = {
-	statfs:		dmfs_statfs,
-	put_inode:	force_delete,
-	delete_inode:	dmfs_delete_inode,
-};
-
-struct super_block *dmfs_read_super(struct super_block *sb, void *data, int silent)
-{
-	struct inode *inode;
-	struct dentry *root;
-
-	sb->s_blocksize = PAGE_CACHE_SIZE;
-	sb->s_blocksize_bits = PAGE_CACHE_SHIFT;
-	sb->s_magic = DMFS_MAGIC;
-	sb->s_op = &dmfs_super_operations;
-	sb->s_maxbytes = MAX_NON_LFS;
-
-	inode = dmfs_create_root(sb, 0755);
-	if (IS_ERR(inode))
-		return NULL;
-	root = d_alloc_root(inode);
-	if (!root) {
-		iput(inode);
-		return NULL;
-	}
-	sb->s_root = root;
-
-	return sb;
-}
-
-struct inode *dmfs_new_inode(struct super_block *sb, int mode)
-{
-	struct inode *inode = new_inode(sb);
-	struct dmfs_i *dmi;
-
-	if (inode) {
-		inode->i_mode = mode;
-		inode->i_uid = current->fsuid;
-		inode->i_gid = current->fsgid;
-		inode->i_blksize = PAGE_CACHE_SIZE;
-		inode->i_blocks = 0;
-		inode->i_rdev = NODEV;
-		inode->i_atime = inode->i_ctime = inode->i_mtime = CURRENT_TIME;
-
-		dmi = kmalloc(sizeof(struct dmfs_i), GFP_KERNEL);
-		if (dmi == NULL) {
-			iput(inode);
-			return NULL;
-		}
-		memset(dmi, 0, sizeof(struct dmfs_i));
-		init_MUTEX(&dmi->sem);
-		inode->u.generic_ip = dmi;
-	}
-	return inode;
-}

driver/device-mapper/dmfs-table.c

@@ -1,379 +0,0 @@
-/*
- * dmfs-table.c
- *
- * Copyright (C) 2001 Sistina Software
- *
- * This software is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2, or (at
- * your option) any later version.
- *
- * This software 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 General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with GNU CC; see the file COPYING.  If not, write to
- * the Free Software Foundation, 59 Temple Place - Suite 330,
- * Boston, MA 02111-1307, USA.
- */
-
-#include <linux/config.h>
-#include <linux/fs.h>
-#include <linux/mm.h>
-
-#include "dm.h"
-
-static offset_t start_of_next_range(struct dm_table *t)
-{
-	offset_t n = 0;
-	if (t->num_targets) {
-		n = t->highs[t->num_targets - 1] + 1;
-	}
-	return n;
-}
-
-static void dmfs_parse_line(struct dm_table *t, unsigned num, char *str)
-{
-	char *p = str;
-	const char *tok;
-	offset_t start, size, high;
-	void *context;
-	struct target_type *ttype;
-	int rv = 0;
-	char *msg;
-
-	printk("dmfs_parse_line: (%s)\n", str);
-
-	msg = "No start argument";
-	tok = next_token(&p);
-	if (!tok)
-		goto out;
-	start = simple_strtoul(tok, NULL, 10);
-
-	msg = "No size argument";
-	tok = next_token(&p);
-	if (!tok)
-		goto out;
-	size = simple_strtoul(tok, NULL, 10);
-
-	msg = "Gap in table";
-	if (start != start_of_next_range(t))
-		goto out;
-
-	msg = "No target type";
-	tok = next_token(&p);
-	if (!tok)
-		goto out;
-
-	msg = "Target type unknown";
-	ttype = dm_get_target_type(tok);
-	if (ttype) {
-		msg = "This message should never appear (constructor error)";
-		rv = ttype->ctr(t, start, size, p, &context);
-		msg = context;
-		if (rv == 0) {
-			printk("dmfs_parse: %ul %ul %s %s\n", start, size, 
-				ttype->name,
-				ttype->print ? ttype->print(context) : "-");
-			msg = "Error adding target to table";
-			high = start + (size - 1);
-			if (dm_table_add_target(t, high, ttype, context) == 0)
-				return;
-			ttype->dtr(t, context);
-		}
-		dm_put_target_type(ttype);
-	}
-out:
-	dmfs_add_error(t, num, msg);
-}
-
-
-static int dmfs_copy(char *dst, int dstlen, char *src, int srclen, int *flag)
-{
-	int len = min(dstlen, srclen);
-	char *start = dst;
-
-	while(len) {
-		*dst = *src++;
-		if (*dst == '\n')
-			goto end_of_line;
-		dst++;
-		len--;
-	}
-out:
-	return (dst - start);
-end_of_line:
-	dst++;
-	*flag = 1;
-	goto out;
-}
-
-static int dmfs_line_is_not_comment(char *str)
-{
-	while(*str) {
-		if (*str == '#')
-			break;
-		if (!isspace(*str))
-			return 1;
-		str++;
-	}
-	return 0;
-}
-
-static int dmfs_parse_page(struct dm_table *t, char *buf, int end, unsigned long end_index, char *tmp, unsigned long *tmpl, int *num)
-{
-	int copied;
-	unsigned long len = end ? end_index : PAGE_CACHE_SIZE - 1;
-
-	do {
-		int flag = 0;
-		copied = dmfs_copy(tmp + *tmpl, PAGE_SIZE - *tmpl - 1, buf, len, &flag);
-		buf += copied;
-		len -= copied;
-		if (*tmpl + copied == PAGE_SIZE - 1)
-			goto line_too_long;
-		(*tmpl) += copied;
-		if (flag || (len == 0 && end)) {
-			*(tmp + *tmpl) = 0;
-			if (dmfs_line_is_not_comment(tmp))
-				dmfs_parse_line(t, *num, tmp);
-			(*num)++;
-			*tmpl = 0;
-		}
-	} while(len > 0);
-	return 0;
-
-line_too_long:
-	dmfs_add_error(t, *num, "Line too long");
-	/* FIXME: Add code to recover from this */
-	return -1;
-}
-
-static struct dm_table *dmfs_parse(struct inode *inode)
-{
-	struct address_space *mapping = inode->i_mapping;
-	unsigned long index = 0;
-	unsigned long end_index, end_offset;
-	unsigned long page;
-	unsigned long rem = 0;
-	struct dm_table *t;
-	struct page *pg;
-	int num = 0;
-
-	if (inode->i_size == 0)
-		return NULL;
-
-	page = __get_free_page(GFP_KERNEL);
-
-	if (!page)
-		return NULL;
-
-	t = dm_table_create();
-	if (!t) {
-		free_page(page);
-		return NULL;
-	}
-
-	end_index = inode->i_size >> PAGE_CACHE_SHIFT;
-	end_offset = inode->i_size & (PAGE_CACHE_SIZE - 1);
-
-	do {
-		pg = find_get_page(mapping, index);
-
-		if (pg) {
-			char *kaddr;
-			int rv;
-
-			if (!Page_Uptodate(pg))
-				goto broken;
-
-			kaddr = kmap(pg);
-			rv = dmfs_parse_page(t, kaddr, (index == end_index), end_offset, (char *)page, &rem, &num);
-			kunmap(pg);
-			page_cache_release(pg);
-
-			if (rv)
-				goto parse_error;
-		}
-
-		index++;
-	} while(index <= end_index);
-
-	free_page(page);
-	if (list_empty(&t->errors)) {
-		dm_table_complete(t);
-	}
-
-	return t;
-
-broken:
-	printk(KERN_ERR "dmfs_parse: Page not uptodate\n");
-	page_cache_release(pg);
-	free_page(page);
-	dm_table_destroy(t);
-	return NULL;
-
-parse_error:
-	printk(KERN_ERR "dmfs_parse: Parse error\n");
-	free_page(page);
-	dm_table_destroy(t);
-	return NULL;
-}
-
-static int dmfs_table_release(struct inode *inode, struct file *f)
-{
-	struct dentry *dentry = f->f_dentry;
-	struct inode *parent = dentry->d_parent->d_inode;
-	struct dmfs_i *dmi = DMFS_I(parent);
-	struct dm_table *table;
-
-	if (f->f_mode & FMODE_WRITE) {
-
-		down(&dmi->sem);
-		table = dmfs_parse(dentry->d_parent->d_inode);
-
-		if (table) {
-			if (dmi->table)
-				dm_table_destroy(dmi->table);
-			dmi->table = table;
-		}
-		up(&dmi->sem);
-
-                put_write_access(parent);
-	}
-
-	return 0;
-}
-
-static int dmfs_readpage(struct file *file, struct page *page)
-{
-	if (!Page_Uptodate(page)) {
-		memset(kmap(page), 0, PAGE_CACHE_SIZE);
-		kunmap(page);
-		flush_dcache_page(page);
-		SetPageUptodate(page);
-	}
-	UnlockPage(page);
-	return 0;
-}
-
-static int dmfs_writepage(struct page *page)
-{
-	SetPageDirty(page);
-	UnlockPage(page);
-	return 0;
-}
-
-static int dmfs_prepare_write(struct file *file, struct page *page,
-			      unsigned offset, unsigned to)
-{
-	void *addr = kmap(page);
-	if (!Page_Uptodate(page)) {
-		memset(addr, 0, PAGE_CACHE_SIZE);
-		flush_dcache_page(page);
-		SetPageUptodate(page);
-	}
-	SetPageDirty(page);
-	return 0;
-}
-
-static int dmfs_commit_write(struct file *file, struct page *page,
-			     unsigned offset, unsigned to)
-{
-	struct inode *inode = page->mapping->host;
-	loff_t pos = ((loff_t) page->index << PAGE_CACHE_SHIFT) + to;
-
-	kunmap(page);
-	if (pos > inode->i_size)
-		inode->i_size = pos;
-	return 0;
-}
-
-/*
- * There is a small race here in that two processes might call this at
- * the same time and both fail. So its a fail safe race :-) This should
- * move into namei.c (and thus use the spinlock and do this properly)
- * at some stage if we continue to use this set of functions for ensuring
- * exclusive write access to the file
- */
-static int get_exclusive_write_access(struct inode *inode)
-{
-	if (get_write_access(inode))
-		return -1;
-	if (atomic_read(&inode->i_writecount) != 1) {
-		put_write_access(inode);
-		return -1;
-	}
-	return 0;
-}
-
-static int dmfs_table_open(struct inode *inode, struct file *file)
-{
-	struct dentry *dentry = file->f_dentry;
-	struct inode *parent = dentry->d_parent->d_inode;
-
-	if (file->f_mode & FMODE_WRITE) {
-		if (get_exclusive_write_access(parent))
-			return -EPERM;
-	}
-
-	return 0;
-}
-
-static int dmfs_table_sync(struct file *file, struct dentry *dentry, int datasync)
-{
-	return 0;
-}
-
-static int dmfs_table_revalidate(struct dentry *dentry)
-{
-	struct inode *inode = dentry->d_inode;
-	struct inode *parent = dentry->d_parent->d_inode;
-
-	inode->i_size = parent->i_size;
-	return 0;
-}
-
-struct address_space_operations dmfs_address_space_operations = {
-	readpage:	dmfs_readpage,
-	writepage:	dmfs_writepage,
-	prepare_write:	dmfs_prepare_write,
-	commit_write:	dmfs_commit_write,
-};
-
-static struct file_operations dmfs_table_file_operations = {
- 	llseek:		generic_file_llseek,
-	read:		generic_file_read,
-	write:		generic_file_write,
-	open:		dmfs_table_open,
-	release:	dmfs_table_release,
-	fsync:		dmfs_table_sync,
-};
-
-static struct inode_operations dmfs_table_inode_operations = {
-	revalidate:	dmfs_table_revalidate,
-};
-
-struct inode *dmfs_create_table(struct inode *dir, int mode)
-{
-	struct inode *inode = new_inode(dir->i_sb);
-
-	if (inode) {
-		inode->i_mode = mode | S_IFREG;
-		inode->i_uid = current->fsuid;
-		inode->i_gid = current->fsgid;
-		inode->i_blksize = PAGE_CACHE_SIZE;
-		inode->i_blocks = 0;
-		inode->i_rdev = NODEV;
-		inode->i_atime = inode->i_ctime = inode->i_mtime = CURRENT_TIME;
-		inode->i_mapping = dir->i_mapping;
-		inode->i_mapping->a_ops = &dmfs_address_space_operations;
-		inode->i_fop = &dmfs_table_file_operations;
-		inode->i_op = &dmfs_table_inode_operations;
-	}
-
-	return inode;
-}
-

driver/device-mapper/dmfs-tdir.c

@@ -1,137 +0,0 @@
-/*
- * dmfs-tdir.c
- *
- * Copyright (C) 2001 Sistina Software
- *
- * This software is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2, or (at
- * your option) any later version.
- *
- * This software 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 General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with GNU CC; see the file COPYING.  If not, write to
- * the Free Software Foundation, 59 Temple Place - Suite 330,
- * Boston, MA 02111-1307, USA.
- */
-
-/* Heavily based upon ramfs */
-
-#include <linux/config.h>
-#include <linux/fs.h>
-
-#include "dm.h"
-
-extern struct inode *dmfs_create_error(struct inode *, int);
-extern struct inode *dmfs_create_table(struct inode *, int);
-extern struct inode *dmfs_create_status(struct inode *, int);
-
-
-static int dmfs_tdir_unlink(struct inode *dir, struct dentry *dentry)
-{
-	struct inode *inode = dentry->d_inode;
-
-	inode->i_mapping = &inode->i_data;
-	inode->i_nlink--;
-	dput(dentry);
-	return 0;
-}
-
-static struct dentry *dmfs_tdir_lookup(struct inode *dir, struct dentry *dentry)
-{
-	struct inode *inode = NULL;
-	const char *name = dentry->d_name.name;
-
-	switch(dentry->d_name.len) {
-		case 5:
-			if (memcmp("table", name, 5) == 0) {
-				inode = dmfs_create_table(dir, 0600);
-				break;
-			}
-			if (memcmp("error", name, 5) == 0)
-				inode = dmfs_create_error(dir, 0600);
-			break;
-		case 6:
-			if (memcmp("status", name, 6) == 0)
-				inode = dmfs_create_status(dir, 0600);
-			break;
-	}
-
-	d_add(dentry, inode);
-	return NULL;
-}
-
-static int dmfs_tdir_readdir(struct file *filp, void *dirent, filldir_t filldir)
-{
-	int i;
-	struct dentry *dentry = filp->f_dentry;
-
-	i = filp->f_pos;
-	switch(i) {
-		case 0:
-			if (filldir(dirent, ".", 1, i, dentry->d_inode->i_ino, DT_DIR) < 0)
-				break;
-			i++;
-			filp->f_pos++;
-			/* fallthrough */
-		case 1:
-			if (filldir(dirent, "..", 2, i, dentry->d_parent->d_inode->i_ino, DT_DIR) < 0)
-				break;
-			i++;
-			filp->f_pos++;
-			/* fallthrough */
-		case 2:
-			if (filldir(dirent, "table", 5, i, 2, DT_REG) < 0)
-				break;
-			i++;
-			filp->f_pos++;
-			/* fallthrough */
-		case 3:
-			if (filldir(dirent, "error", 5, i, 3, DT_REG) < 0)
-				break;
-			i++;
-			filp->f_pos++;
-			/* fallthrough */
-		case 4:
-			if (filldir(dirent, "status", 6, i, 4, DT_REG) < 0)
-				break;
-			i++;
-			filp->f_pos++;
-	}
-	return 0;
-}
-
-
-static int dmfs_tdir_sync(struct file *file, struct dentry *dentry, int datasync)
-{
-	return 0;
-}
-
-static struct file_operations dmfs_tdir_file_operations = {
-	read:		generic_read_dir,
-	readdir:	dmfs_tdir_readdir,
-	fsync:		dmfs_tdir_sync,
-};
-
-static struct inode_operations dmfs_tdir_inode_operations = {
-	lookup:		dmfs_tdir_lookup,
-	unlink:		dmfs_tdir_unlink,
-};
-
-struct inode *dmfs_create_tdir(struct super_block *sb, int mode)
-{
-	struct inode *inode = dmfs_new_inode(sb, mode | S_IFDIR);
-
-	if (inode) {
-		inode->i_fop = &dmfs_tdir_file_operations;
-		inode->i_op = &dmfs_tdir_inode_operations;
-	}
-
-	return inode;
-}
-
-

driver/device-mapper/patches/00_bh-async-3

@@ -1,88 +0,0 @@
-diff -urN 2.4.7pre6/fs/buffer.c bh_async/fs/buffer.c
---- 2.4.7pre6/fs/buffer.c	Wed Jul 11 06:03:18 2001
-+++ bh_async/fs/buffer.c	Thu Jul 12 07:55:08 2001
-@@ -827,10 +827,11 @@
- 	 * that unlock the page..
- 	 */
- 	spin_lock_irqsave(&page_uptodate_lock, flags);
-+	mark_buffer_async(bh, 0);
- 	unlock_buffer(bh);
- 	tmp = bh->b_this_page;
- 	while (tmp != bh) {
--		if (tmp->b_end_io == end_buffer_io_async && buffer_locked(tmp))
-+		if (buffer_async(tmp) && buffer_locked(tmp))
- 			goto still_busy;
- 		tmp = tmp->b_this_page;
- 	}
-@@ -862,8 +863,9 @@
- 	return;
- }
- 
--void set_buffer_async_io(struct buffer_head *bh) {
-+inline void set_buffer_async_io(struct buffer_head *bh) {
-     bh->b_end_io = end_buffer_io_async ;
-+    mark_buffer_async(bh, 1);
- }
- 
- /*
-@@ -1553,7 +1555,7 @@
- 	/* Stage 2: lock the buffers, mark them clean */
- 	do {
- 		lock_buffer(bh);
--		bh->b_end_io = end_buffer_io_async;
-+		set_buffer_async_io(bh);
- 		get_bh(bh);
- 		set_bit(BH_Uptodate, &bh->b_state);
- 		clear_bit(BH_Dirty, &bh->b_state);
-@@ -1755,7 +1757,7 @@
- 	for (i = 0; i < nr; i++) {
- 		struct buffer_head * bh = arr[i];
- 		lock_buffer(bh);
--		bh->b_end_io = end_buffer_io_async;
-+		set_buffer_async_io(bh);
- 		get_bh(bh);
- 	}
- 
-@@ -2200,7 +2202,7 @@
- 		lock_buffer(bh);
- 		bh->b_blocknr = *(b++);
- 		set_bit(BH_Mapped, &bh->b_state);
--		bh->b_end_io = end_buffer_io_async;
-+		set_buffer_async_io(bh);
- 		get_bh(bh);
- 		bh = bh->b_this_page;
- 	} while (bh != head);
-diff -urN 2.4.7pre6/include/linux/fs.h bh_async/include/linux/fs.h
---- 2.4.7pre6/include/linux/fs.h	Wed Jul 11 06:03:19 2001
-+++ bh_async/include/linux/fs.h	Thu Jul 12 07:54:26 2001
-@@ -215,6 +215,7 @@
- 	BH_New,		/* 1 if the buffer is new and not yet written out */
- 	BH_Protected,	/* 1 if the buffer is protected */
-	BH_JBD,		/* 1 if it has an attached journal_head */
-+	BH_Async,	/* 1 if the buffer is under end_buffer_io_async I/O */
- 
- 	BH_PrivateStart,/* not a state bit, but the first bit available
- 			 * for private allocation by other entities
-@@ -275,6 +276,7 @@
- #define buffer_mapped(bh)	__buffer_state(bh,Mapped)
- #define buffer_new(bh)		__buffer_state(bh,New)
- #define buffer_protected(bh)	__buffer_state(bh,Protected)
-+#define buffer_async(bh)	__buffer_state(bh,Async)
- 
- #define bh_offset(bh)		((unsigned long)(bh)->b_data & ~PAGE_MASK)
- 
-@@ -1110,6 +1112,14 @@
- extern void FASTCALL(mark_buffer_dirty(struct buffer_head *bh));
- 
- #define atomic_set_buffer_dirty(bh) test_and_set_bit(BH_Dirty, &(bh)->b_state)
-+
-+static inline void mark_buffer_async(struct buffer_head * bh, int on)
-+{
-+	if (on)
-+		set_bit(BH_Async, &bh->b_state);
-+	else
-+		clear_bit(BH_Async, &bh->b_state);
-+}
- 
- /*
-  * If an error happens during the make_request, this function

driver/device-mapper/patches/00_config

@@ -1,10 +0,0 @@
---- linux-2.4.9-ac5/drivers/md/Config.in	Sun Mar 11 13:33:24 2001
-+++ linux/drivers/md/Config.in	Thu Sep 13 18:02:17 2001
-@@ -13,5 +13,7 @@
- dep_tristate '  RAID-4/RAID-5 mode' CONFIG_MD_RAID5 $CONFIG_BLK_DEV_MD
- 
- dep_tristate ' Logical volume manager (LVM) support' CONFIG_BLK_DEV_LVM $CONFIG_MD
-+dep_tristate ' Device mapper support' CONFIG_BLK_DEV_DM $CONFIG_MD
-+dep_tristate '  Device mapper linear target' CONFIG_BLK_DEV_DM_LINEAR $CONFIG_BLK_DEV_DM
- 
- endmenu

driver/device-mapper/patches/00_config_uml

@@ -1,13 +0,0 @@
---- uml_build/arch/um/config.in.orig	Tue Jan  2 14:33:42 2001
-+++ uml_build/arch/um/config.in	Tue Jan  2 14:35:42 2001
-@@ -15,6 +15,8 @@
- bool 'Prompt for development and/or incomplete code/drivers' CONFIG_EXPERIMENTAL
- endmenu
- 
-+source drivers/md/Config.in
-+
- mainmenu_option next_comment
- comment 'Processor features'
- bool 'Symmetric multi-processing support' CONFIG_SMP
-
-

driver/device-mapper/patches/00_makefile

@@ -1,25 +0,0 @@
---- linux-2.4.9-ac5/drivers/md/Makefile	Sat Sep  1 16:24:46 2001
-+++ linux/drivers/md/Makefile	Fri Sep 14 09:12:39 2001
-@@ -7,6 +7,7 @@
- export-objs	:= md.o xor.o
- list-multi	:= lvm-mod.o
- lvm-mod-objs	:= lvm.o lvm-snap.o lvm-fs.o
-+dm-mod-objs	:= dm.o dm-table.o dm-target.o dm-fs.o dm-parse.o dm-blkdev.o
- 
- # Note: link order is important.  All raid personalities
- # and xor.o must come before md.o, as they each initialise 
-@@ -19,8 +20,14 @@
- obj-$(CONFIG_MD_RAID5)		+= raid5.o xor.o
- obj-$(CONFIG_BLK_DEV_MD)	+= md.o
- obj-$(CONFIG_BLK_DEV_LVM)	+= lvm-mod.o
-+obj-$(CONFIG_BLK_DEV_DM)	+= dm-mod.o
-+obj-$(CONFIG_BLK_DEV_DM_LINEAR)	+= dm-linear.o
- 
- include $(TOPDIR)/Rules.make
- 
- lvm-mod.o: $(lvm-mod-objs)
- 	$(LD) -r -o $@ $(lvm-mod-objs)
-+
-+dm-mod.o: $(dm-mod-objs)
-+	$(LD) -r -o $@ $(dm-mod-objs)
-+

driver/device-mapper/patches/INDEX

@@ -1,13 +0,0 @@
-00_latest		Latest source - I only tend to update this before 
-                        making a release.  So if you got this from CVS copy
-                        or link the source files in by hand.
-
-00_config		Add device-mapper to the MD section
-
-00_config_uml           only apply for uml, turns on the md section
-
-00_makefile		Add device-mapper to the MD Makefile.
-
-00_bh-async-3		AA's async bh patch so we can hook b_end_io
-                        to keep track of pending io.
-

driver/user_mode_linux/README

@@ -1,30 +0,0 @@
-FILES
------
-
-setup-uml - script to build a user mode linux system, with the lvm driver
-            symbolically linked back to the LVM dir so I can work from CVS.
-
-uml-lvm.patch - patch to enable lvm in the uml configuration
-
-uml.patch.bz2 - uml patch from 
-                http://sourceforge.net/project/showfiles.php?group_id=429
-
-config-uml - .config which turns on LVM
-
-
-RUNNING 
--------
-
-o checkout an LVM dir for use with uml
-  make sure you've got a copy of a root filesystem kicking about
-
-o edit the variables at the top of 'setup'
-
-o run setup-uml
-
-o move to your uml dir and run lvm-install as root
-
-o then run the 'up' script to run uml
-
-o if you want to rebuild uml after changing the LVM driver just change into
-  the linux directory and do a 'make linux ARCH=um'.  Don't forget the ARCH=um.

driver/user_mode_linux/config-uml

@@ -1,299 +0,0 @@
-#
-# Automatically generated by make menuconfig: don't edit
-#
-CONFIG_USERMODE=y
-# CONFIG_ISA is not set
-# CONFIG_SBUS is not set
-# CONFIG_PCI is not set
-CONFIG_UID16=y
-CONFIG_RWSEM_XCHGADD_ALGORITHM=y
-
-#
-# Code maturity level options
-#
-CONFIG_EXPERIMENTAL=y
-
-#
-# Multi-device support (RAID and LVM)
-#
-CONFIG_MD=y
-# CONFIG_BLK_DEV_MD is not set
-# CONFIG_MD_LINEAR is not set
-# CONFIG_MD_RAID0 is not set
-# CONFIG_MD_RAID1 is not set
-# CONFIG_MD_RAID5 is not set
-# CONFIG_BLK_DEV_LVM is not set
-CONFIG_BLK_DEV_DM=y
-
-#
-# General Setup
-#
-CONFIG_STDIO_CONSOLE=y
-CONFIG_NET=y
-CONFIG_SYSVIPC=y
-CONFIG_BSD_PROCESS_ACCT=y
-CONFIG_SYSCTL=y
-CONFIG_BINFMT_AOUT=y
-CONFIG_BINFMT_ELF=y
-CONFIG_BINFMT_MISC=y
-CONFIG_UNIX98_PTYS=y
-CONFIG_UNIX98_PTY_COUNT=256
-CONFIG_SSL=y
-CONFIG_HOSTFS=m
-CONFIG_MCONSOLE=y
-CONFIG_MAGIC_SYSRQ=y
-
-#
-# Loadable module support
-#
-CONFIG_MODULES=y
-# CONFIG_KMOD is not set
-
-#
-# Devices
-#
-CONFIG_BLK_DEV_UBD=y
-# CONFIG_BLK_DEV_UBD_SYNC is not set
-CONFIG_BLK_DEV_LOOP=y
-CONFIG_BLK_DEV_NBD=y
-CONFIG_BLK_DEV_RAM=y
-CONFIG_BLK_DEV_RAM_SIZE=4096
-CONFIG_BLK_DEV_INITRD=y
-# CONFIG_MMAPPER is not set
-
-#
-# Networking options
-#
-# CONFIG_PACKET is not set
-CONFIG_NETLINK=y
-# CONFIG_RTNETLINK is not set
-# CONFIG_NETLINK_DEV is not set
-# CONFIG_NETFILTER is not set
-# CONFIG_FILTER is not set
-CONFIG_UNIX=y
-CONFIG_INET=y
-# CONFIG_IP_MULTICAST is not set
-# CONFIG_IP_ADVANCED_ROUTER is not set
-# CONFIG_IP_PNP is not set
-# CONFIG_NET_IPIP is not set
-# CONFIG_NET_IPGRE is not set
-# CONFIG_INET_ECN is not set
-# CONFIG_SYN_COOKIES is not set
-# CONFIG_IPV6 is not set
-# CONFIG_KHTTPD is not set
-# CONFIG_ATM is not set
-# CONFIG_IPX is not set
-# CONFIG_ATALK is not set
-# CONFIG_DECNET is not set
-# CONFIG_BRIDGE is not set
-# CONFIG_X25 is not set
-# CONFIG_LAPB is not set
-# CONFIG_LLC is not set
-# CONFIG_NET_DIVERT is not set
-# CONFIG_ECONET is not set
-# CONFIG_WAN_ROUTER is not set
-# CONFIG_NET_FASTROUTE is not set
-# CONFIG_NET_HW_FLOWCONTROL is not set
-
-#
-# QoS and/or fair queueing
-#
-# CONFIG_NET_SCHED is not set
-
-#
-# Network drivers
-#
-
-#
-# ARCnet devices
-#
-# CONFIG_ARCNET is not set
-CONFIG_DUMMY=y
-# CONFIG_BONDING is not set
-# CONFIG_EQUALIZER is not set
-CONFIG_TUN=y
-CONFIG_ETHERTAP=y
-
-#
-# Ethernet (10 or 100Mbit)
-#
-# CONFIG_NET_ETHERNET is not set
-
-#
-# Ethernet (1000 Mbit)
-#
-# CONFIG_ACENIC is not set
-# CONFIG_ACENIC_OMIT_TIGON_I is not set
-# CONFIG_DL2K is not set
-# CONFIG_MYRI_SBUS is not set
-# CONFIG_HAMACHI is not set
-# CONFIG_YELLOWFIN is not set
-# CONFIG_SK98LIN is not set
-# CONFIG_FDDI is not set
-# CONFIG_HIPPI is not set
-# CONFIG_PLIP is not set
-CONFIG_PPP=y
-# CONFIG_PPP_MULTILINK is not set
-# CONFIG_PPP_FILTER is not set
-# CONFIG_PPP_ASYNC is not set
-# CONFIG_PPP_SYNC_TTY is not set
-# CONFIG_PPP_DEFLATE is not set
-# CONFIG_PPP_BSDCOMP is not set
-# CONFIG_PPPOE is not set
-CONFIG_SLIP=y
-# CONFIG_SLIP_COMPRESSED is not set
-# CONFIG_SLIP_SMART is not set
-# CONFIG_SLIP_MODE_SLIP6 is not set
-
-#
-# Wireless LAN (non-hamradio)
-#
-# CONFIG_NET_RADIO is not set
-
-#
-# Token Ring devices
-#
-# CONFIG_TR is not set
-# CONFIG_NET_FC is not set
-# CONFIG_RCPCI is not set
-# CONFIG_SHAPER is not set
-
-#
-# Wan interfaces
-#
-# CONFIG_WAN is not set
-
-#
-# Network device support
-#
-CONFIG_NETDEVICES=y
-CONFIG_UML_NET=y
-CONFIG_UML_NET_ETHERTAP=y
-CONFIG_UML_NET_SLIP=y
-CONFIG_UML_NET_DAEMON=y
-CONFIG_UML_NET_MCAST=y
-CONFIG_ETHERTAP=y
-CONFIG_TUN=y
-
-#
-# File systems
-#
-CONFIG_QUOTA=y
-CONFIG_AUTOFS_FS=m
-CONFIG_AUTOFS4_FS=m
-CONFIG_REISERFS_FS=m
-# CONFIG_REISERFS_CHECK is not set
-# CONFIG_ADFS_FS is not set
-# CONFIG_ADFS_FS_RW is not set
-# CONFIG_AFFS_FS is not set
-# CONFIG_HFS_FS is not set
-# CONFIG_BFS_FS is not set
-CONFIG_FAT_FS=m
-CONFIG_MSDOS_FS=m
-CONFIG_UMSDOS_FS=m
-CONFIG_VFAT_FS=m
-# CONFIG_EFS_FS is not set
-# CONFIG_JFFS_FS is not set
-# CONFIG_CRAMFS is not set
-# CONFIG_TMPFS is not set
-# CONFIG_RAMFS is not set
-CONFIG_ISO9660_FS=m
-# CONFIG_JOLIET is not set
-CONFIG_MINIX_FS=m
-# CONFIG_VXFS_FS is not set
-# CONFIG_NTFS_FS is not set
-# CONFIG_NTFS_RW is not set
-# CONFIG_HPFS_FS is not set
-CONFIG_PROC_FS=y
-CONFIG_DEVFS_FS=y
-CONFIG_DEVFS_MOUNT=y
-# CONFIG_DEVFS_DEBUG is not set
-CONFIG_DEVPTS_FS=y
-# CONFIG_QNX4FS_FS is not set
-# CONFIG_QNX4FS_RW is not set
-# CONFIG_ROMFS_FS is not set
-CONFIG_EXT2_FS=y
-# CONFIG_SYSV_FS is not set
-# CONFIG_UDF_FS is not set
-# CONFIG_UDF_RW is not set
-# CONFIG_UFS_FS is not set
-# CONFIG_UFS_FS_WRITE is not set
-
-#
-# Network File Systems
-#
-# CONFIG_CODA_FS is not set
-# CONFIG_NFS_FS is not set
-# CONFIG_NFS_V3 is not set
-# CONFIG_ROOT_NFS is not set
-# CONFIG_NFSD is not set
-# CONFIG_NFSD_V3 is not set
-# CONFIG_SUNRPC is not set
-# CONFIG_LOCKD is not set
-# CONFIG_SMB_FS is not set
-# CONFIG_NCP_FS is not set
-# CONFIG_NCPFS_PACKET_SIGNING is not set
-# CONFIG_NCPFS_IOCTL_LOCKING is not set
-# CONFIG_NCPFS_STRONG is not set
-# CONFIG_NCPFS_NFS_NS is not set
-# CONFIG_NCPFS_OS2_NS is not set
-# CONFIG_NCPFS_SMALLDOS is not set
-# CONFIG_NCPFS_NLS is not set
-# CONFIG_NCPFS_EXTRAS is not set
-
-#
-# Partition Types
-#
-# CONFIG_PARTITION_ADVANCED is not set
-CONFIG_MSDOS_PARTITION=y
-# CONFIG_SMB_NLS is not set
-CONFIG_NLS=y
-
-#
-# Native Language Support
-#
-CONFIG_NLS_DEFAULT="iso8859-1"
-# CONFIG_NLS_CODEPAGE_437 is not set
-# CONFIG_NLS_CODEPAGE_737 is not set
-# CONFIG_NLS_CODEPAGE_775 is not set
-# CONFIG_NLS_CODEPAGE_850 is not set
-# CONFIG_NLS_CODEPAGE_852 is not set
-# CONFIG_NLS_CODEPAGE_855 is not set
-# CONFIG_NLS_CODEPAGE_857 is not set
-# CONFIG_NLS_CODEPAGE_860 is not set
-# CONFIG_NLS_CODEPAGE_861 is not set
-# CONFIG_NLS_CODEPAGE_862 is not set
-# CONFIG_NLS_CODEPAGE_863 is not set
-# CONFIG_NLS_CODEPAGE_864 is not set
-# CONFIG_NLS_CODEPAGE_865 is not set
-# CONFIG_NLS_CODEPAGE_866 is not set
-# CONFIG_NLS_CODEPAGE_869 is not set
-# CONFIG_NLS_CODEPAGE_936 is not set
-# CONFIG_NLS_CODEPAGE_950 is not set
-# CONFIG_NLS_CODEPAGE_932 is not set
-# CONFIG_NLS_CODEPAGE_949 is not set
-# CONFIG_NLS_CODEPAGE_874 is not set
-# CONFIG_NLS_ISO8859_8 is not set
-# CONFIG_NLS_CODEPAGE_1251 is not set
-# CONFIG_NLS_ISO8859_1 is not set
-# CONFIG_NLS_ISO8859_2 is not set
-# CONFIG_NLS_ISO8859_3 is not set
-# CONFIG_NLS_ISO8859_4 is not set
-# CONFIG_NLS_ISO8859_5 is not set
-# CONFIG_NLS_ISO8859_6 is not set
-# CONFIG_NLS_ISO8859_7 is not set
-# CONFIG_NLS_ISO8859_9 is not set
-# CONFIG_NLS_ISO8859_13 is not set
-# CONFIG_NLS_ISO8859_14 is not set
-# CONFIG_NLS_ISO8859_15 is not set
-# CONFIG_NLS_KOI8_R is not set
-# CONFIG_NLS_KOI8_U is not set
-# CONFIG_NLS_UTF8 is not set
-
-#
-# Kernel hacking
-#
-CONFIG_DEBUGSYM=y
-CONFIG_PT_PROXY=y
-# CONFIG_GPROF is not set
-# CONFIG_GCOV is not set

driver/user_mode_linux/setup-uml

@@ -1,179 +0,0 @@
-#! /usr/bin/perl -w
-
-use Cwd;
-
-##############################
-# Start user configurable bit
-##############################
-
-# Please use absolute paths too.
-# you can't use ~'s in your paths here.
-
-# the directory where you've checked out lvm, keep a seperate copy for uml,
-# the uml kernel will have links to these files
-$lvm_src="/home/thornber/sistina/LVM2";
-
-
-# the debian root image, get it from here:
-# http://prdownloads.sourceforge.net/user-mode-linux/root_fs_debian2.2_small.bz2
-# unzip it once you've downloaded it
-$root_fs="/home/thornber/uml/root_fs_debian2.2_small";
-
-# these are 100 Meg files created with dd
-# these become our PV's /dev/ubd/[1-4]
-# I sometimes use ubd/1 as swap though.
-@block_devices = ("/home/thornber/uml/scratch1",
-		  "/home/thornber/uml/scratch2",
-		  "/home/thornber/uml/scratch3",
-		  "/home/thornber/uml/scratch4");
-
-# directory where uml will be built, and the up, lvm-install scripts will
-# be placed
-$dest_dir="/home/thornber/builds/uml-lvm2";
-
-# It must be 2.4.8, can be .gz or .bz2
-$kernel_tarball="/home/thornber/packages/2.4/linux-2.4.9.tar";
-
-###############################
-# end of user configurable bit
-###############################
-
-
-$wd = cwd;
-$uml_patch = $wd . "/uml.patch.bz2";
-$lvm_uml_patch = $wd . "/uml-lvm.patch";
-$driver = $lvm_src . "/driver/device-mapper";
-
-
-# check we've got everything we need
-&check_file($root_fs);
-&check_dir($lvm_src);
-&check_file($kernel_tarball);
-&check_dir($dest_dir);
-&check_file($uml_patch);
-&check_file($lvm_uml_patch);
-
-
-chdir($dest_dir);
-&extract_kernel($dest_dir, $kernel_tarball);
-chdir("linux");
-&run_command("bzip2 -dc $uml_patch | patch -p1", "patching kernel with uml");
-&run_command("patch -p1 < $lvm_uml_patch", "enabling LVM driver");
-
-chdir("$dest_dir/linux");
-
-&run_command("cd include/linux; ln -s $driver/device-mapper.h",
-	     "linking device-mapper.h");
-
-&run_command("cd drivers/md; ln -s $driver/dm.h", "linking dm.h");
-&run_command("cd drivers/md; ln -s $driver/dm-fs.c", "linking dm-fs.c");
-&run_command("cd drivers/md; ln -s $driver/dm-table.c", "linking dm-table.c");
-&run_command("cd drivers/md; ln -s $driver/dm-target.c", 
-	     "linking dm-target.c");
-&run_command("cd drivers/md; ln -s $driver/dm.c", "linking dm.c");
-
-chdir("$dest_dir/linux");
-&run_command("make oldconfig ARCH=um", "making oldconfig ARCH=um");
-&run_command("make dep ARCH=um", "making dependencies");
-&run_command("make linux ARCH=um", "building linux uml");
-
-chdir($dest_dir);
-&run_command("ln -s $dest_dir/linux/linux uml", "creating link for linux");
-
-chdir($dest_dir);
-&run_command("ln -s $root_fs ./root_fs", "linking root filesystem");
-
-chdir($dest_dir);
-&link_devices();
-&write_up();
-&run_command("mkdir root_fs_mnt");
-&write_lvm_install();
-
-print "Dont forget to run $dest_dir/lvm-install as root\n";
-
-
-sub write_lvm_install {
-    open(OUT, "> lvm-install");
-    print OUT "#! /bin/sh\n\n";
-    print OUT <<"end";
-mount root_fs root_fs_mnt -o loop
-cd $lvm_src; make install; cd $dest_dir
-umount root_fs_mnt
-end
-
-    close OUT;
-    system "chmod +x lvm-install";
-}
-
-
-sub write_up {
-    open(UP, "> up");
-    print UP "#! /bin/sh\n\n./uml ";
-    $count = 1;
-    for $d (@block_devices) {
-	print UP "ubd$count=ubd$count ";
-	$count++;
-    }
-    print UP "\n";
-    close UP;
-    system("chmod +x up");
-}
-
-sub link_devices {
-    $count = 1;
-    foreach $d (@block_devices) {
-	&run_command("ln -s $d ubd$count",
-		     "linking block device ubd$count");
-	$count++;
-    }
-}
-
-sub extract_kernel {
-    my($dest, $tb) = @_;
-    my($cmd);
-    if($tb =~ m/\.bz2/) {
-	$cmd = "tar Ixf $tb";
-
-    } elsif($tb =~ m/\.gz/) {
-	$cmd = "tar zxf $tb";
-
-    } else {
-	$cmd = "tar xf $tb";
-    }
-
-    &run_command($cmd, "extracting kernel");
-}
-
-sub run_command {
-    my($cmd) = shift;
-    my($desc) = shift;
-    my($r);
-    print STDERR $desc, " ... ";
-    $r = system("$cmd > /dev/null");
-    if(!$r) {
-	print STDERR "done.\n";
-	return;
-    } else {
-	print STDERR "failed.\n";
-	exit(1);
-    }
-}
-
-sub check_file {
-    $f = shift;
-    if(! -e $f) {
-	print STDERR "couldn't find $f\n";
-	exit;
-    }
-}
-
-sub check_dir {
-    $f = shift;
-    if(! -e $f || ! -d $f) {
-	print STDERR "couldn't find a directory called $f\n";
-	exit;
-    }
-}
-
-
-

driver/user_mode_linux/uml-lvm.patch

@@ -1,30 +0,0 @@
---- uml_build/arch/um/config.in.orig	Tue Jan  2 14:33:42 2001
-+++ uml_build/arch/um/config.in	Tue Jan  2 14:35:42 2001
-@@ -15,6 +15,8 @@
- bool 'Prompt for development and/or incomplete code/drivers' CONFIG_EXPERIMENTAL
- endmenu
- 
-+source drivers/md/Config.in
-+
- mainmenu_option next_comment
- comment 'Processor features'
- bool 'Symmetric multi-processing support' CONFIG_SMP
---- linux/drivers/md/Config.in.orig	Tue Aug 21 14:18:30 2001
-+++ linux/drivers/md/Config.in	Tue Aug 21 14:19:08 2001
-@@ -14,4 +14,6 @@
- 
- dep_tristate ' Logical volume manager (LVM) support' CONFIG_BLK_DEV_LVM $CONFIG_MD
- 
-+dep_tristate ' Device mapper support' CONFIG_BLK_DEV_DM $CONFIG_MD
-+
- endmenu
---- linux/drivers/md/Makefile.orig	Tue Aug 21 14:19:14 2001
-+++ linux/drivers/md/Makefile	Tue Aug 21 14:20:06 2001
-@@ -19,6 +19,7 @@
- obj-$(CONFIG_MD_RAID5)		+= raid5.o xor.o
- obj-$(CONFIG_BLK_DEV_MD)	+= md.o
- obj-$(CONFIG_BLK_DEV_LVM)	+= lvm-mod.o
-+obj-$(CONFIG_BLK_DEV_DM)	+= dm.o dm-table.o dm-target.o dm-fs.o dm-parse.o
- 
- include $(TOPDIR)/Rules.make
- 

include/.symlinks

@@ -1,16 +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/datastruct/hash.h
+../lib/config/defaults.h
+../lib/datastruct/btree.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/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/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
+../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
@@ -31,11 +29,15 @@ all: .symlinks_created
 	for i in `cat .symlinks`; do $(LN_S) $$i ; done
 	touch $@
 
-clean:
-
 distclean:
 	find . -maxdepth 1 -type l -exec $(RM) \{\} \;
 	$(RM) Makefile .include_symlinks .symlinks_created
 
-.PHONY: clean distclean all
+pofile: all
+
+clean:
+
+install:
+
+install_cluster:
 

lib/Makefile.in

@@ -1,39 +1,145 @@
 #
-# 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 \
+	cache/lvmcache.c \
+	commands/toolcontext.c \
 	config/config.c \
-	datastruct/hash.c \
+	datastruct/btree.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 \
+	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 \
+	locking/file_locking.c \
+	locking/locking.c \
+	locking/no_locking.c \
+	log/log.c \
+	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 \
+	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 \
+	zero/zero.c
+
+ifeq ("@LVM1@", "internal")
+  SOURCES +=\
 	format1/disk-rep.c \
 	format1/format1.c \
 	format1/import-export.c \
+	format1/import-extents.c \
 	format1/layout.c \
-	format1/vg_number.c \
-	log/log.c \
-	metadata/metadata.c \
-	mm/dbg_malloc.c \
-	mm/pool.c \
-	uuid/uuid.c
+	format1/lvm1-label.c \
+	format1/vg_number.c
+endif
 
-TARGETS=liblvm.a
+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
 
-include ../make.tmpl
+ifeq ("@CLUSTER@", "internal")
+  SOURCES += locking/cluster_locking.c
+endif
 
-liblvm.a: $(OBJECTS)
-	$(RM) $@
-	$(AR) r $@ $(OBJECTS)
-	$(RANLIB) $@
+ifeq ("@CLUSTER@", "shared")
+  SUBDIRS += locking
+endif
+
+ifeq ("@SNAPSHOTS@", "internal")
+  SOURCES += snapshot/snapshot.c
+endif
+
+ifeq ("@MIRRORS@", "internal")
+  SOURCES += mirror/mirrored.c
+endif
+
+ifeq ("@DEVMAPPER@", "yes")
+  SOURCES +=\
+	activate/dev_manager.c \
+	activate/fs.c
+endif
+
+ifeq ("@HAVE_LIBDL@", "yes")
+  SOURCES +=\
+	locking/external_locking.c \
+	misc/sharedlib.c
+endif
+
+ifeq ("@DMEVENTD@", "yes")
+  CLDFLAGS += -ldevmapper-event
+endif
+
+LIB_STATIC = liblvm.a
+
+$(SUBDIRS): $(LIB_STATIC)
+
+include $(top_srcdir)/make.tmpl
 

lib/README

@@ -1 +0,0 @@
-Base library directory

lib/activate/activate.c

@@ -1,35 +1,890 @@
 /*
- * 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 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 "metadata.h"
 #include "activate.h"
+#include "memlock.h"
+#include "display.h"
+#include "fs.h"
+#include "lvm-exec.h"
+#include "lvm-file.h"
+#include "lvm-string.h"
+#include "toolcontext.h"
+#include "dev_manager.h"
+#include "str_list.h"
+#include "config.h"
+#include "filter.h"
+#include "segtype.h"
 
-int lv_activate(struct volume_group *vg, struct logical_volume *lv)
+#include <limits.h>
+#include <fcntl.h>
+#include <unistd.h>
+
+#define _skip(fmt, args...) log_very_verbose("Skipping: " fmt , ## args)
+
+int lvm1_present(struct cmd_context *cmd)
+{
+	char path[PATH_MAX];
+
+	if (lvm_snprintf(path, sizeof(path), "%s/lvm/global", cmd->proc_dir)
+	    < 0) {
+		log_error("LVM1 proc global snprintf failed");
+		return 0;
+	}
+
+	if (path_exists(path))
+		return 1;
+	else
+		return 0;
+}
+
+#ifndef DEVMAPPER_SUPPORT
+void set_activation(int act)
+{
+	static int warned = 0;
+
+	if (warned || !act)
+		return;
+
+	log_error("Compiled without libdevmapper support. "
+		  "Can't enable activation.");
+
+	warned = 1;
+}
+int activation(void)
 {
 	return 0;
 }
-
-int lv_deactivate(struct volume_group *vg, struct logical_volume *lv)
+int library_version(char *version, size_t size)
+{
+	return 0;
+}
+int driver_version(char *version, size_t size)
+{
+	return 0;
+}
+int target_version(const char *target_name, uint32_t *maj,
+		   uint32_t *min, uint32_t *patchlevel)
+{
+	return 0;
+}
+int target_present(const char *target_name)
+{
+	return 0;
+}
+int lv_info(struct cmd_context *cmd, const struct logical_volume *lv, struct lvinfo *info,
+	    int with_open_count)
+{
+	return 0;
+}
+int lv_info_by_lvid(struct cmd_context *cmd, const char *lvid_s,
+		    struct lvinfo *info, int with_open_count)
+{
+	return 0;
+}
+int lv_snapshot_percent(struct logical_volume *lv, float *percent)
+{
+	return 0;
+}
+int lv_mirror_percent(struct logical_volume *lv, int wait, float *percent,
+		      uint32_t *event_nr)
 {
 	return 0;
 }
-
 int lvs_in_vg_activated(struct volume_group *vg)
 {
 	return 0;
 }
+int lvs_in_vg_opened(struct volume_group *vg)
+{
+	return 0;
+}
+int lv_suspend(struct cmd_context *cmd, const char *lvid_s)
+{
+	return 1;
+}
+int lv_suspend_if_active(struct cmd_context *cmd, const char *lvid_s)
+{
+	return 1;
+}
+int lv_resume(struct cmd_context *cmd, const char *lvid_s)
+{
+	return 1;
+}
+int lv_resume_if_active(struct cmd_context *cmd, const char *lvid_s)
+{
+	return 1;
+}
+int lv_deactivate(struct cmd_context *cmd, const char *lvid_s)
+{
+	return 1;
+}
+int lv_activation_filter(struct cmd_context *cmd, const char *lvid_s,
+			 int *activate_lv)
+{
+	return 1;
+}
+int lv_activate(struct cmd_context *cmd, const char *lvid_s, int exclusive)
+{
+	return 1;
+}
+int lv_activate_with_filter(struct cmd_context *cmd, const char *lvid_s, int exclusive)
+{
+	return 1;
+}
 
-int activate_lvs_in_vg(struct volume_group *vg)
+int lv_mknodes(struct cmd_context *cmd, const struct logical_volume *lv)
+{
+	return 1;
+}
+
+int pv_uses_vg(struct cmd_context *cmd, struct physical_volume *pv,
+               struct volume_group *vg)
 {
 	return 0;
 }
 
-int deactivate_lvs_in_vg(struct volume_group *vg)
+void activation_exit(void)
 {
+	return;
+}
+
+#else				/* DEVMAPPER_SUPPORT */
+
+static int _activation = 1;
+
+void set_activation(int act)
+{
+	if (act == _activation)
+		return;
+
+	_activation = act;
+	if (_activation)
+		log_verbose("Activation enabled. Device-mapper kernel "
+			    "driver will be used.");
+	else
+		log_print("WARNING: Activation disabled. No device-mapper "
+			  "interaction will be attempted.");
+}
+
+int activation(void)
+{
+	return _activation;
+}
+
+static int _passes_activation_filter(struct cmd_context *cmd,
+				     struct logical_volume *lv)
+{
+	const struct config_node *cn;
+	struct config_value *cv;
+	char *str;
+	char path[PATH_MAX];
+
+	if (!(cn = find_config_node(cmd->cft->root, "activation/volume_list"))) {
+		/* If no host tags defined, activate */
+		if (list_empty(&cmd->tags))
+			return 1;
+
+		/* If any host tag matches any LV or VG tag, activate */
+		if (str_list_match_list(&cmd->tags, &lv->tags) ||
+		    str_list_match_list(&cmd->tags, &lv->vg->tags))
+			return 1;
+
+		/* Don't activate */
+		return 0;
+	}
+
+	for (cv = cn->v; cv; cv = cv->next) {
+		if (cv->type != CFG_STRING) {
+			log_error("Ignoring invalid string in config file "
+				  "activation/volume_list");
+			continue;
+		}
+		str = cv->v.str;
+		if (!*str) {
+			log_error("Ignoring empty string in config file "
+				  "activation/volume_list");
+			continue;
+		}
+
+		/* Tag? */
+		if (*str == '@') {
+			str++;
+			if (!*str) {
+				log_error("Ignoring empty tag in config file "
+					  "activation/volume_list");
+				continue;
+			}
+			/* If any host tag matches any LV or VG tag, activate */
+			if (!strcmp(str, "*")) {
+				if (str_list_match_list(&cmd->tags, &lv->tags)
+				    || str_list_match_list(&cmd->tags,
+							   &lv->vg->tags))
+					    return 1;
+				else
+					continue;
+			}
+			/* If supplied tag matches LV or VG tag, activate */
+			if (str_list_match_item(&lv->tags, str) ||
+			    str_list_match_item(&lv->vg->tags, str))
+				return 1;
+			else
+				continue;
+		}
+		if (!index(str, '/')) {
+			/* vgname supplied */
+			if (!strcmp(str, lv->vg->name))
+				return 1;
+			else
+				continue;
+		}
+		/* vgname/lvname */
+		if (lvm_snprintf(path, sizeof(path), "%s/%s", lv->vg->name,
+				 lv->name) < 0) {
+			log_error("lvm_snprintf error from %s/%s", lv->vg->name,
+				  lv->name);
+			continue;
+		}
+		if (!strcmp(path, str))
+			return 1;
+	}
+
 	return 0;
 }
 
+int library_version(char *version, size_t size)
+{
+	if (!activation())
+		return 0;
 
+	return dm_get_library_version(version, size);
+}
+
+int driver_version(char *version, size_t size)
+{
+	if (!activation())
+		return 0;
+
+	log_very_verbose("Getting driver version");
+
+	return dm_driver_version(version, size);
+}
+
+int target_version(const char *target_name, uint32_t *maj,
+		   uint32_t *min, uint32_t *patchlevel)
+{
+	int r = 0;
+	struct dm_task *dmt;
+	struct dm_versions *target, *last_target;
+
+	log_very_verbose("Getting target version for %s", target_name);
+	if (!(dmt = dm_task_create(DM_DEVICE_LIST_VERSIONS)))
+		return_0;
+
+	if (!dm_task_run(dmt)) {
+		log_debug("Failed to get %s target version", target_name);
+		/* Assume this was because LIST_VERSIONS isn't supported */
+		return 1;
+	}
+
+	target = dm_task_get_versions(dmt);
+
+	do {
+		last_target = target;
+
+		if (!strcmp(target_name, target->name)) {
+			r = 1;
+			*maj = target->version[0];
+			*min = target->version[1];
+			*patchlevel = target->version[2];
+			goto out;
+		}
+
+		target = (void *) target + target->next;
+	} while (last_target != target);
+
+      out:
+	dm_task_destroy(dmt);
+
+	return r;
+}
+
+int target_present(const char *target_name, int use_modprobe)
+{
+	uint32_t maj, min, patchlevel;
+#ifdef MODPROBE_CMD
+	char module[128];
+#endif
+
+	if (!activation())
+		return 0;
+
+#ifdef MODPROBE_CMD
+	if (use_modprobe) {
+		if (target_version(target_name, &maj, &min, &patchlevel))
+			return 1;
+
+		if (lvm_snprintf(module, sizeof(module), "dm-%s", target_name)
+		    < 0) {
+			log_error("target_present module name too long: %s",
+				  target_name);
+			return 0;
+		}
+
+		if (!exec_cmd(MODPROBE_CMD, module, "", ""))
+			return_0;
+	}
+#endif
+
+	return target_version(target_name, &maj, &min, &patchlevel);
+}
+
+/*
+ * Returns 1 if info structure populated, else 0 on failure.
+ */
+static int _lv_info(struct cmd_context *cmd, const struct logical_volume *lv, int with_mknodes,
+		    struct lvinfo *info, int with_open_count)
+{
+	struct dm_info dminfo;
+	char *name;
+
+	if (!activation())
+		return 0;
+
+	if (!(name = build_dm_name(cmd->mem, lv->vg->name, lv->name, NULL)))
+		return_0;
+
+	log_debug("Getting device info for %s", name);
+	if (!dev_manager_info(lv->vg->cmd->mem, name, lv, with_mknodes,
+			      with_open_count, &dminfo)) {
+		dm_pool_free(cmd->mem, name);
+		return_0;
+	}
+
+	info->exists = dminfo.exists;
+	info->suspended = dminfo.suspended;
+	info->open_count = dminfo.open_count;
+	info->major = dminfo.major;
+	info->minor = dminfo.minor;
+	info->read_only = dminfo.read_only;
+	info->live_table = dminfo.live_table;
+	info->inactive_table = dminfo.inactive_table;
+
+	dm_pool_free(cmd->mem, name);
+	return 1;
+}
+
+int lv_info(struct cmd_context *cmd, const struct logical_volume *lv, struct lvinfo *info,
+	    int with_open_count)
+{
+	return _lv_info(cmd, lv, 0, info, with_open_count);
+}
+
+int lv_info_by_lvid(struct cmd_context *cmd, const char *lvid_s,
+		    struct lvinfo *info, int with_open_count)
+{
+	struct logical_volume *lv;
+
+	if (!(lv = lv_from_lvid(cmd, lvid_s, 0)))
+		return 0;
+
+	return _lv_info(cmd, lv, 0, info, with_open_count);
+}
+
+/*
+ * Returns 1 if percent set, else 0 on failure.
+ */
+int lv_snapshot_percent(struct logical_volume *lv, float *percent)
+{
+	int r;
+	struct dev_manager *dm;
+
+	if (!activation())
+		return 0;
+
+	if (!(dm = dev_manager_create(lv->vg->cmd, lv->vg->name)))
+		return_0;
+
+	if (!(r = dev_manager_snapshot_percent(dm, lv, percent)))
+		stack;
+
+	dev_manager_destroy(dm);
+
+	return r;
+}
+
+/* FIXME Merge with snapshot_percent */
+int lv_mirror_percent(struct cmd_context *cmd, struct logical_volume *lv, int wait, float *percent,
+		      uint32_t *event_nr)
+{
+	int r;
+	struct dev_manager *dm;
+	struct lvinfo info;
+
+	if (!activation())
+		return 0;
+
+	if (!lv_info(cmd, lv, &info, 0))
+		return_0;
+
+	if (!info.exists)
+		return 0;
+
+	if (!(dm = dev_manager_create(lv->vg->cmd, lv->vg->name)))
+		return_0;
+
+	if (!(r = dev_manager_mirror_percent(dm, lv, wait, percent, event_nr)))
+		stack;
+
+	dev_manager_destroy(dm);
+
+	return r;
+}
+
+static int _lv_active(struct cmd_context *cmd, struct logical_volume *lv)
+{
+	struct lvinfo info;
+
+	if (!lv_info(cmd, lv, &info, 0)) {
+		stack;
+		return -1;
+	}
+
+	return info.exists;
+}
+
+static int _lv_open_count(struct cmd_context *cmd, struct logical_volume *lv)
+{
+	struct lvinfo info;
+
+	if (!lv_info(cmd, lv, &info, 1)) {
+		stack;
+		return -1;
+	}
+
+	return info.open_count;
+}
+
+static int _lv_activate_lv(struct logical_volume *lv)
+{
+	int r;
+	struct dev_manager *dm;
+
+	if (!(dm = dev_manager_create(lv->vg->cmd, lv->vg->name)))
+		return_0;
+
+	if (!(r = dev_manager_activate(dm, lv)))
+		stack;
+
+	dev_manager_destroy(dm);
+	return r;
+}
+
+static int _lv_preload(struct logical_volume *lv)
+{
+	int r;
+	struct dev_manager *dm;
+
+	if (!(dm = dev_manager_create(lv->vg->cmd, lv->vg->name)))
+		return_0;
+
+	if (!(r = dev_manager_preload(dm, lv)))
+		stack;
+
+	dev_manager_destroy(dm);
+	return r;
+}
+
+static int _lv_deactivate(struct logical_volume *lv)
+{
+	int r;
+	struct dev_manager *dm;
+
+	if (!(dm = dev_manager_create(lv->vg->cmd, lv->vg->name)))
+		return_0;
+
+	if (!(r = dev_manager_deactivate(dm, lv)))
+		stack;
+
+	dev_manager_destroy(dm);
+	return r;
+}
+
+static int _lv_suspend_lv(struct logical_volume *lv)
+{
+	int r;
+	struct dev_manager *dm;
+
+	if (!(dm = dev_manager_create(lv->vg->cmd, lv->vg->name)))
+		return_0;
+
+	if (!(r = dev_manager_suspend(dm, lv)))
+		stack;
+
+	dev_manager_destroy(dm);
+	return r;
+}
+
+/*
+ * These two functions return the number of visible LVs in the state,
+ * or -1 on error.
+ */
+int lvs_in_vg_activated(struct volume_group *vg)
+{
+	struct lv_list *lvl;
+	int count = 0;
+
+	if (!activation())
+		return 0;
+
+	list_iterate_items(lvl, &vg->lvs) {
+		if (lvl->lv->status & VISIBLE_LV)
+			count += (_lv_active(vg->cmd, lvl->lv) == 1);
+	}
+
+	return count;
+}
+
+int lvs_in_vg_opened(struct volume_group *vg)
+{
+	struct lv_list *lvl;
+	int count = 0;
+
+	if (!activation())
+		return 0;
+
+	list_iterate_items(lvl, &vg->lvs) {
+		if (lvl->lv->status & VISIBLE_LV)
+			count += (_lv_open_count(vg->cmd, lvl->lv) > 0);
+	}
+
+	return count;
+}
+
+static int _register_dev_for_events(struct cmd_context *cmd,
+				    struct logical_volume *lv, int do_reg)
+{
+#ifdef DMEVENTD
+	struct list *tmp;
+	struct lv_segment *seg;
+	int (*reg) (struct dm_pool *mem, struct lv_segment *,
+		    struct config_tree *cft, int events);
+
+	list_iterate(tmp, &lv->segments) {
+		seg = list_item(tmp, struct lv_segment);
+
+		reg = NULL;
+
+		if (do_reg) {
+			if (seg->segtype->ops->target_register_events)
+				reg = seg->segtype->ops->target_register_events;
+		} else if (seg->segtype->ops->target_unregister_events)
+			reg = seg->segtype->ops->target_unregister_events;
+
+		if (reg)
+			/* FIXME specify events */
+			if (!reg(cmd->mem, seg, cmd->cft, 0)) {
+				stack;
+				return 0;
+			}
+	}
+
+#endif
+	return 1;
+}
+
+static int _lv_suspend(struct cmd_context *cmd, const char *lvid_s,
+		       int error_if_not_suspended)
+{
+	struct logical_volume *lv, *lv_pre;
+	struct lvinfo info;
+
+	if (!activation())
+		return 1;
+
+	if (!(lv = lv_from_lvid(cmd, lvid_s, 0)))
+		return_0;
+
+	/* Use precommitted metadata if present */
+	if (!(lv_pre = lv_from_lvid(cmd, lvid_s, 1)))
+		return_0;
+
+	if (test_mode()) {
+		_skip("Suspending '%s'.", lv->name);
+		return 1;
+	}
+
+	if (!lv_info(cmd, lv, &info, 0))
+		return_0;
+
+	if (!info.exists || info.suspended)
+		return error_if_not_suspended ? 0 : 1;
+
+	/* If VG was precommitted, preload devices for the LV */
+	if ((lv_pre->vg->status & PRECOMMITTED)) {
+		if (!_lv_preload(lv_pre)) {
+			/* FIXME Revert preloading */
+			return_0;
+		}
+	}
+
+	if (!_register_dev_for_events(cmd, lv, 0))
+		stack;
+
+	memlock_inc();
+	if (!_lv_suspend_lv(lv)) {
+		memlock_dec();
+		fs_unlock();
+		return 0;
+	}
+
+	return 1;
+}
+
+/* Returns success if the device is not active */
+int lv_suspend_if_active(struct cmd_context *cmd, const char *lvid_s)
+{
+	return _lv_suspend(cmd, lvid_s, 0);
+}
+
+int lv_suspend(struct cmd_context *cmd, const char *lvid_s)
+{
+	return _lv_suspend(cmd, lvid_s, 1);
+}
+
+static int _lv_resume(struct cmd_context *cmd, const char *lvid_s,
+		      int error_if_not_active)
+{
+	struct logical_volume *lv;
+	struct lvinfo info;
+
+	if (!activation())
+		return 1;
+
+	if (!(lv = lv_from_lvid(cmd, lvid_s, 0)))
+		return 0;
+
+	if (test_mode()) {
+		_skip("Resuming '%s'.", lv->name);
+		return 1;
+	}
+
+	if (!lv_info(cmd, lv, &info, 0))
+		return_0;
+
+	if (!info.exists || !info.suspended)
+		return error_if_not_active ? 0 : 1;
+
+	if (!_lv_activate_lv(lv))
+		return 0;
+
+	memlock_dec();
+	fs_unlock();
+
+	if (!_register_dev_for_events(cmd, lv, 1))
+		stack;
+
+	return 1;
+}
+
+/* Returns success if the device is not active */
+int lv_resume_if_active(struct cmd_context *cmd, const char *lvid_s)
+{
+	return _lv_resume(cmd, lvid_s, 0);
+}
+
+int lv_resume(struct cmd_context *cmd, const char *lvid_s)
+{
+	return _lv_resume(cmd, lvid_s, 1);
+}
+
+int lv_deactivate(struct cmd_context *cmd, const char *lvid_s)
+{
+	struct logical_volume *lv;
+	struct lvinfo info;
+	int r;
+
+	if (!activation())
+		return 1;
+
+	if (!(lv = lv_from_lvid(cmd, lvid_s, 0)))
+		return 0;
+
+	if (test_mode()) {
+		_skip("Deactivating '%s'.", lv->name);
+		return 1;
+	}
+
+	if (!lv_info(cmd, lv, &info, 1))
+		return_0;
+
+	if (!info.exists)
+		return 1;
+
+	if (info.open_count && (lv->status & VISIBLE_LV)) {
+		log_error("LV %s/%s in use: not deactivating", lv->vg->name,
+			  lv->name);
+		return 0;
+	}
+
+	if (!_register_dev_for_events(cmd, lv, 0))
+		stack;
+
+	memlock_inc();
+	r = _lv_deactivate(lv);
+	memlock_dec();
+	fs_unlock();
+
+	return r;
+}
+
+/* Test if LV passes filter */
+int lv_activation_filter(struct cmd_context *cmd, const char *lvid_s,
+			 int *activate_lv)
+{
+	struct logical_volume *lv;
+
+	if (!activation())
+		goto activate;
+
+	if (!(lv = lv_from_lvid(cmd, lvid_s, 0)))
+		return 0;
+
+	if (!_passes_activation_filter(cmd, lv)) {
+		log_verbose("Not activating %s/%s due to config file settings",
+			    lv->vg->name, lv->name);
+		*activate_lv = 0;
+		return 1;
+	}
+
+      activate:
+	*activate_lv = 1;
+	return 1;
+}
+
+static int _lv_activate(struct cmd_context *cmd, const char *lvid_s,
+			int exclusive, int filter)
+{
+	struct logical_volume *lv;
+	struct lvinfo info;
+	int r;
+
+	if (!activation())
+		return 1;
+
+	if (!(lv = lv_from_lvid(cmd, lvid_s, 0)))
+		return 0;
+
+	if (filter && !_passes_activation_filter(cmd, lv)) {
+		log_verbose("Not activating %s/%s due to config file settings",
+			    lv->vg->name, lv->name);
+		return 0;
+	}
+
+	if (test_mode()) {
+		_skip("Activating '%s'.", lv->name);
+		return 1;
+	}
+
+	if (!lv_info(cmd, lv, &info, 0))
+		return_0;
+
+	if (info.exists && !info.suspended && info.live_table)
+		return 1;
+
+	if (exclusive)
+		lv->status |= ACTIVATE_EXCL;
+
+	memlock_inc();
+	r = _lv_activate_lv(lv);
+	memlock_dec();
+	fs_unlock();
+
+	if (!_register_dev_for_events(cmd, lv, 1))
+		stack;
+
+	return r;
+}
+
+/* Activate LV */
+int lv_activate(struct cmd_context *cmd, const char *lvid_s, int exclusive)
+{
+	return _lv_activate(cmd, lvid_s, exclusive, 0);
+}
+
+/* Activate LV only if it passes filter */
+int lv_activate_with_filter(struct cmd_context *cmd, const char *lvid_s, int exclusive)
+{
+	return _lv_activate(cmd, lvid_s, exclusive, 1);
+}
+
+int lv_mknodes(struct cmd_context *cmd, const struct logical_volume *lv)
+{
+	struct lvinfo info;
+	int r = 1;
+
+	if (!lv) {
+		r = dm_mknodes(NULL);
+		fs_unlock();
+		return r;
+	}
+
+	if (!_lv_info(cmd, lv, 1, &info, 0))
+		return_0;
+
+	if (info.exists)
+		r = dev_manager_lv_mknodes(lv);
+	else
+		r = dev_manager_lv_rmnodes(lv);
+
+	fs_unlock();
+
+	return r;
+}
+
+/*
+ * Does PV use VG somewhere in its construction?
+ * Returns 1 on failure.
+ */
+int pv_uses_vg(struct cmd_context *cmd, struct physical_volume *pv,
+               struct volume_group *vg)
+{
+	struct dev_manager *dm;
+	int r;
+
+	if (!activation())
+		return 0;
+
+	if (!dm_is_dm_major(MAJOR(pv->dev->dev)))
+		return 0;
+
+	if (!(dm = dev_manager_create(cmd, vg->name))) {
+		stack;
+		return 1;
+	}
+
+	r = dev_manager_device_uses_vg(dm, pv->dev, vg);
+
+	dev_manager_destroy(dm);
+
+	return r;
+}
+
+void activation_exit(void)
+{
+	dev_manager_exit();
+}
+#endif

lib/activate/activate.h

@@ -1,28 +1,89 @@
 /*
- * 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_ACTIVATE_H
 #define LVM_ACTIVATE_H
 
-/* FIXME Snapshot handling? */
+#include "metadata.h"
 
-int lv_activate(struct volume_group *vg,
-		struct logical_volume *lv);
+struct lvinfo {
+	int exists;
+	int suspended;
+	unsigned int open_count;
+	int major;
+	int minor;
+	int read_only;
+	int live_table;
+	int inactive_table;
+};
 
-int lv_deactivate(struct volume_group *vg,
-		  struct logical_volume *lv);
+void set_activation(int activation);
+int activation(void);
 
-/* Return number of LVs in the VG that are active */
+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 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_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.
+ */
 int lvs_in_vg_activated(struct volume_group *vg);
+int lvs_in_vg_opened(struct volume_group *vg);
 
-/* Activate all LVs in the VG.  Ignore any that are already active. */
-/* Return number activated */
-int activate_lvs_in_vg(struct volume_group *vg);
-
-/* Deactivate all LVs in the VG */
-int deactivate_lvs_in_vg(struct volume_group *vg);
+/*
+ * 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

@@ -0,0 +1,64 @@
+/*
+ * 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 _LVM_DEV_MANAGER_H
+#define _LVM_DEV_MANAGER_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(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
+ * dm devices, and ensuring that all constraints are maintained
+ * (eg, an origin is created before its snapshot, but is not
+ * unsuspended until the snapshot is also created.)
+ */
+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/dmfs-driver.h

@@ -1,31 +0,0 @@
-/*
- * Copyright (C) 2001 Sistina Software (UK) Limited.
- *
- * This file is released under the GPL.
- */
-
-#ifndef DMFS_INTERFACE_H
-#define DMFS_INTERFACE_H
-
-struct dmfs;
-
-struct dmfs *dmfs_create(void);
-void dmfs_destroy(struct dmfs *dm);
-
-int dmfs_dev_is_present(struct dmfs *dm, const char *dev);
-int dmfs_dev_is_active(struct dmfs *dm, const char *dev);
-
-int dmfs_table_is_present(struct dmfs *dm, const char *dev, const char *table);
-int dmfs_table_is_active(struct dmfs *dm, const char *dev, const char *table);
-
-int dmfs_dev_create(struct dmfs *dm, const char *name);
-int dmfs_dev_load_table(struct dmfs *dm, const char *dev, 
-			const char *table, const char *file);
-int dmfs_dev_drop_table(struct dmfs *dm, const char *dev, const char *table);
-
-int dmfs_dev_activate_table(struct dmfs *dm, const char *dev,
-			    const char *table);
-
-int dmfs_dev_deactivate(struct dmfs *dm, const char *dev);
-
-#endif

lib/activate/fs.c

@@ -0,0 +1,354 @@
+/*
+ * 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 "fs.h"
+#include "toolcontext.h"
+#include "lvm-string.h"
+#include "lvm-file.h"
+#include "memlock.h"
+
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <limits.h>
+#include <dirent.h>
+
+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",
+			 dev_dir, vg_name) == -1) {
+		log_error("Couldn't construct name of volume "
+			  "group directory.");
+		return 0;
+	}
+
+	if (dir_exists(vg_path))
+		return 1;
+
+	log_very_verbose("Creating directory %s", vg_path);
+	if (mkdir(vg_path, 0777)) {
+		log_sys_error("mkdir", vg_path);
+		return 0;
+	}
+
+	return 1;
+}
+
+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",
+			 dev_dir, vg_name) == -1) {
+		log_error("Couldn't construct name of volume "
+			  "group directory.");
+		return 0;
+	}
+
+	if (dir_exists(vg_path) && is_empty_dir(vg_path)) {
+		log_very_verbose("Removing directory %s", vg_path);
+		rmdir(vg_path);
+	}
+
+	return 1;
+}
+
+static void _rm_blks(const char *dir)
+{
+	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(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);
+		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);
+		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) && !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;
+		}
+	}
+
+	log_very_verbose("Linking %s -> %s", lv_path, link_path);
+	if (symlink(link_path, lv_path) < 0) {
+		log_sys_error("symlink", lv_path);
+		return 0;
+	}
+
+#ifdef HAVE_SELINUX
+        if (!dm_set_selinux_context(lv_path, S_IFLNK)) {
+                stack;
+                return 0;
+        }
+#endif
+
+	return 1;
+}
+
+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",
+			 dev_dir, vg_name, lv_name) == -1) {
+		log_error("Couldn't determine link pathname.");
+		return 0;
+	}
+
+	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;
+	}
+
+	return 1;
+}
+
+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)
+{
+	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;
+}
+
+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)
+{
+	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;
+}
+
+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)
+{
+	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

@@ -0,0 +1,32 @@
+/*
+ * 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_FS_H
+#define _LVM_FS_H
+
+#include "metadata.h"
+
+/*
+ * These calls, private to the activate unit, set
+ * up the volume group directory in /dev and the
+ * symbolic links to the dm device.
+ */
+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