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Commit Graph

536 Commits

Author SHA1 Message Date
Zdenek Kabelac
880507498a Add --addnodeonresume, --addnodeoncreate
Add new function dm_task_set_add_node() to select between 2 types
of node creation in device directory.

DM_ADD_NODE_ON_RESUME is now default and ensures node is created on
resume. Old original behavior is accessible with DM_ADD_NODE_ON_CREATE.
In this case node would be created during dmsetup create --notable.

For the user 2 new options for dmsetup create are added:
[{--addnodeonresume | --addnodeoncreate }]

Properly working node creation on resume is needed for proper operation
stacking and ability to correctly check in which state the device should
after whole udev transation.
2011-02-04 19:33:53 +00:00
Zdenek Kabelac
f5f6dcbc62 Fix operation node stacking for consecutive dm ops
With the ability to stack many operations in one udev transaction -
in same cases we are adding and removing same device at the same time
(i.e. deactivate followed by activate).

This leads to a problem of checking stacked operations:
i.e. remove /dev/node1 followed by create /dev/node1

If the node creation is handled with udev - there is a problem as
stacked operation gives warning about existing node1 and will try to
remove it - while next operation needs to recreate it.

Current code removes all previous stacked operation if the fs op is
FS_DEL - patch adds similar behavior for FS_ADD - it will try to
remove any 'delete' operation if udev is in use.

For FS_RENAME operation it seems to be more complex. But as we
are always stacking FS_READ_AHEAD after FS_ADD operation -
should be safe to remove all previous operation on the node
when udev is running.

Code does same checking for stacking libdm and liblvm operations.

As a very simple optimization counters were added for each stacked ops
type to avoid unneeded list scans if some operation does not exists in
the list.

Enable skipping of fs_unlock() (udev sync) if only DEL operations are staked.
as we do not use lv_info for already deleted nodes.
2011-02-04 19:14:39 +00:00
Milan Broz
2b29daaaa6 Suport DM_SECURE_DATA_FLAG.
It will be user for cryptsetup to ensure buffers are properly
wiped when sending sensitive data (key).
2011-02-04 16:08:11 +00:00
Peter Rajnoha
1e88b1125a Add a debug message when uevent is not generated and we call udev_complete internally. 2011-01-31 11:54:55 +00:00
Zdenek Kabelac
bc49609c6f Compile code for memory debuging only with DEBUG_MEM
When it's not in use - do not compile this code.
Improves lcov code coverage results for this code a lot :)
2011-01-28 16:01:32 +00:00
Zdenek Kabelac
a5c6acf22a Skip NULL check before dm_free
dm_free checks for NULL itself.
2011-01-28 10:16:04 +00:00
Zdenek Kabelac
4b79aeb0ea Initialize pool object for each row
Fix assert abort of dmsetup (when compiled with pool debug)
dmsetup splitname --nameprefixes --noheadings --rows gvg-a2

Move pool begin in the inner loop - otherwise it would using
already 'ended' pool object.
2011-01-25 21:51:30 +00:00
Alasdair Kergon
a8de276520 Replace fs_unlock by sync_local_dev_names to notify local clvmd. (2.02.80)
Introduce sync_local_dev_names and CLVMD_CMD_SYNC_NAMES to issue fs_unlock.
2011-01-12 20:42:50 +00:00
Zdenek Kabelac
b3c6850b1c Define DM_COOKIE_AUTO_CREATE
TODO: Use it also for already written code.
2011-01-10 13:42:31 +00:00
Peter Rajnoha
8d5391f1c3 Export DM_CONTROL_NODE_UMASK and use it while creating /dev/mapper/control. 2011-01-04 14:43:53 +00:00
Zdenek Kabelac
9e06310aab Use const char* for offset calculation
As 'const' types are also passed to macro dm_list_struct_base -
keep offset calculation with const char pointers.
Fixes several gcc constness warnings.
2010-12-20 13:39:12 +00:00
Zdenek Kabelac
303923fbf1 Use const char* const * for dm_regex_create()
Change API interface to accept even completely const array patterns.

This should present no change for libdm users and allows to pass
pattern arrays without cast to const char **.
2010-12-20 13:23:11 +00:00
Peter Rajnoha
7e0db38528 HAVE_SELINUX again 2010-12-13 12:44:09 +00:00
Peter Rajnoha
cb12e3fc9f #ifdef HAVE_SELINUX and #ifdef HAVE_SELINUX_LABEL_H 2010-12-13 12:30:04 +00:00
Peter Rajnoha
c0920fbf2a Missing #elif HAVE_SELINUX 2010-12-13 12:18:38 +00:00
Peter Rajnoha
7dfce0e467 Add new dm_prepare_selinux_context fn to libdevmapper and use it throughout.
Detect existence of new SELinux selabel interface during configure.
Use new dm_prepare_selinux_context instead of dm_set_selinux_context.

We should set the SELinux context before the actual file system object creation.
The new dm_prepare_selinux_context function sets this using the selabel_lookup
fn in conjuction with the setfscreatecon fn. If selinux/label.h interface
(that should be a part of the selinux library) is not found during configure,
we fallback to the original matchpathcon function instead.
2010-12-13 10:43:56 +00:00
Zdenek Kabelac
8865a4c19e Add stack trace for error path
If dm_task_set_cookie() fails print stack trace, but keep going on.
2010-11-30 22:40:19 +00:00
Zdenek Kabelac
5b8abb1240 Add error path stack traces
Check for errors from dm_task_set_name() and dm_task_run().
Add stack traces for error paths.
Return 0 if some error is found.
2010-11-30 22:32:44 +00:00
Zdenek Kabelac
2e3be4f3fd Optimize lookup table read
Reread lookup table only when needed.
2010-11-29 14:25:13 +00:00
Zdenek Kabelac
4cb0f557d9 Remove dead assignment in _step_matcher
'ns' is not used after this assignment and it is reassigned with the following
code, so dropping this assignment.
2010-11-29 12:43:49 +00:00
Zdenek Kabelac
5f3325fcf1 Remove dead assignment in _mirror_emit_segment_line
Remove unused 'r' assignment.
2010-11-29 12:42:10 +00:00
Zdenek Kabelac
cbecd3cd11 Remove dead assignment in dm_tree_node_add_mirror_target_log
'seg' is never used - remove it.
2010-11-29 11:26:00 +00:00
Zdenek Kabelac
8661190736 Cleanup remove test for NULL
dm_free is testing NULL itself
2010-11-29 10:11:50 +00:00
Zdenek Kabelac
f46de65682 Do not call dm_task_destroy with NULL 2010-11-23 18:29:06 +00:00
Zdenek Kabelac
b2594b047b Move va_end(ap) so we do not leave with return -1 without calling it.
Remove unneeded ';'
2010-11-23 15:00:52 +00:00
Alasdair Kergon
ef3d8e18d3 Fix _output_field crash from field_id free with DEBUG_MEM. (Phillip Susi) 2010-11-19 13:17:27 +00:00
Alasdair Kergon
31ed6045f9 lost line 2010-11-02 20:10:35 +00:00
Alasdair Kergon
4b429b6c33 Fix regex optimiser not to ignore RHS of OR nodes in _find_leftmost_common. 2010-11-02 19:56:33 +00:00
Peter Rajnoha
2bea18e504 Use dm_strdup/dm_free instead of strdup/free. 2010-11-01 13:50:51 +00:00
Peter Rajnoha
a83c7816e4 Allocate buffer for reporting functions dynamically to support long outputs.
Fix memory leak of field_id in _output_field function.

There's been a patch added recently to use dynamic allocation for metadata
tags buffer to remove the 4k limit (for writing metadata out). However, when
using reporting commands like vgs and lvs, we still need to fix libdm reporting
functions themselves to support such long outputs. So the buffer used in those
reporting functions is dynamic now.

The patch also includes a fix for field_id memory leak which was found in
the _output_field function.
2010-11-01 13:31:55 +00:00
Zdenek Kabelac
84cc478cc4 Use static indentifier for internal functions
Functions _align_chunk() and  _new_chunk() are used only internally inside
pool-fast.c - so keep them static inside this object file.
2010-10-26 08:59:05 +00:00
Zdenek Kabelac
a636bccaba Use const pointer for return value of dm_basename
Fix return pointer to const as it is created from passed input const pointer.
2010-10-25 13:13:53 +00:00
Alasdair Kergon
1b7750c4bd Use a more-generic name for the new kernel flag so list_devices can share it. 2010-10-25 11:44:20 +00:00
Petr Rockai
d95a85ca36 Implement dmeventd -R, allowing dmeventd to be restarted without losing
monitoring state.
2010-10-20 15:12:12 +00:00
Alasdair Kergon
57a8279442 Add --setuuid to dmsetup rename.
Add dm_task_set_newuuid to set uuid of mapped device post-creation. (pjones)
2010-10-15 01:10:27 +00:00
Alasdair Kergon
ac0252ca07 Add dm_zalloc and use it and dm_pool_zalloc throughout. 2010-09-30 21:06:50 +00:00
Dave Wysochanski
d6fbd0db32 Add macro definitions to report infrastructure for character array length.
Rather than hard code the size of the field, use a #define, so we can re-use.
The #define will be needed in a future patch when we extend the reporting
infrastructure to have 'get' and 'set' functions for each field, allowing
lvm2app functions which query any report field.  In order to provide a
generic lookup based on the field id, we will define a type containing this
field id, and thus, we will need to re-use the length of this string as
it's defined inside libdevmapper.h.
2010-08-20 12:44:30 +00:00
Peter Rajnoha
88b97d8f30 Fix dm-mod autoloading logic to not assume control node is set correctly.
We can't rely on the fact that udev should prepare the node with right major
and minor number to trigger the module autoloading. We have to take into
account that the node could be missing or it could exist with improper
major and minor number assigned (e.g. from previous kernel versions in
an environment with static nodes and without udev). Make any corrections
if needed!
2010-08-18 13:11:56 +00:00
Peter Rajnoha
2d7614322e dm-mod autoloading support is in kernel 2.6.36 actually. 2010-08-16 11:13:18 +00:00
Joe Thornber
0ae41c4412 [REGEX] fix a long standing off-by-one error (found by valgrind-pool) 2010-08-09 10:58:27 +00:00
Joe Thornber
52e1564fdd [MM] Make valgrind aware of the pool allocators
./configure with --enable-valgrind-pool to enable this.
2010-08-09 10:56:01 +00:00
Joe Thornber
fae2c49259 [REGEX] fix bug in matcher that was causing segfault with chars of 0x80 and over. 2010-08-09 10:30:52 +00:00
Joe Thornber
7def56f1e4 [REGEX] Parse regexes that contain chars with value > 0x80
This is a long standing issue.  Fixed by casting a char value to
unsigned char before using it as an index into a bitset.
2010-08-09 10:29:42 +00:00
Zdenek Kabelac
59f8043d7c Fix 'void*' arithmetic warnings in dbg_malloc.c.
Use more readable char[idx] access instead of *char+idx access.
2010-08-03 13:24:07 +00:00
Zdenek Kabelac
30168792f4 Fix 'void*' arithmetic warning in some functions from libdm-iface.c. 2010-08-03 13:16:21 +00:00
Zdenek Kabelac
9f926fd060 Use void parameter for function definition. 2010-08-03 13:06:35 +00:00
Zdenek Kabelac
56081fe97b Clean generated files .exported_symbols_generated, example.conf for distclean. 2010-08-03 13:00:45 +00:00
Peter Rajnoha
d87427446c Add check for kernel semaphore support and disable udev_sync if not available.
udev_sync feature requires semaphores (part of System V IPC) to be configured
in kernel (CONFIG_SYSVIPC). Check whether it is supported and if not, give
a warning message and disable udev synchronisation code automatically to
avoid any further error states and associated problems.

One should use the kernel with System V IPC support enabled or libdevmapper
with udev_sync feature disabled.
2010-08-03 07:56:03 +00:00
Peter Rajnoha
f89f7955fc Revert unsuccessful table load preparation in combined "create, load and resume" scenario.
There was missing "revert" call in _create_and_load_v4 fn while the preparation
for table load ends up with failure in create/load/resume sequence. Otherwise
we could end up with a device being created, but not table-loaded nor resumed.

Even though the table is not loaded and the device is not resumed at this
stage, we still need to synchronize with udev when calling the revert
"remove" ioctl - there's still a remove uevent generated! The "revert"
code does exactly that.
2010-07-28 10:30:28 +00:00
Alasdair Kergon
4cc5adf46c Fix dm_create_lockfile error paths - incorrectly unlinked in-use lockfile.
(Jan Friesse)
2010-07-27 21:56:14 +00:00
Jonathan Earl Brassow
405c4a45d8 It's not enough to check for the kernel module in the case of cluster
mirrors, we must also check that the log daemon (cmirrord) is running.
The log module can be auto-loaded, but the daemon cannot be
"auto-started".  Failing to check for the daemon produces cryptic
messages that customers have a hard time deciphering.  (The system
messages do report that the log daemon is not running, but people
don't seem to find this message easily.)

Here are examples of what is printed when the module is available,
but the log daemon has not been started.

[root@bp-01 LVM2]# lvcreate -m1 -l1 -n lv vg
  Shared cluster mirrors are not available.

[root@bp-01 LVM2]# lvcreate -m1 -l1 -n lv vg -v
    Setting logging type to disk
    Finding volume group "vg"
    Archiving volume group "vg" metadata (seqno 3).
    Creating logical volume lv
    Executing: /sbin/modprobe dm-log-userspace
    Cluster mirror log daemon is not running
  Shared cluster mirrors are not available.
    Creating volume group backup "/etc/lvm/backup/vg" (seqno 4).
2010-07-21 13:40:21 +00:00
Joe Thornber
5b39a977ca [REGEX] calculate dfa states on demand 2010-07-21 12:09:12 +00:00
Joe Thornber
ed72f7e13a [REGEX] remove the state_queue structure.
Instead we just have a 'next' field in the dfa_state.
2010-07-21 12:02:51 +00:00
Joe Thornber
aab1bfd693 [REGEX] factor _calc_state() out of _calc_states() 2010-07-21 12:00:53 +00:00
Joe Thornber
529edb1853 [REGEX] reduce the number of charset nodes that are produced 2010-07-21 11:58:49 +00:00
Joe Thornber
fee2e890af [REGEX] add a fingerprinting facility to allow test code to compare dfas 2010-07-20 15:32:07 +00:00
Fabio M. Di Nitto
8c4e8a185a Add dm_create_lockfile to libdm to handle pidfiles for all daemons.
Switch dmeventd to use dm_create_lockfile and drop duplicate code.
Allow clvmd pidfile to be configurable.
Switch cmirrord and clvmd to use dm_create_lockfile.
2010-07-13 13:51:01 +00:00
Alasdair Kergon
08f1ddea6c Use __attribute__ consistently throughout. 2010-07-09 15:34:40 +00:00
Zdenek Kabelac
981adf4837 Minor optimalization of _test_word.
Skip ffs() if  (test >> bit) is 0.
2010-07-08 12:16:16 +00:00
Alasdair Kergon
44cd0f4780 Add parentheses to some libdevmapper.h macro arguments. 2010-07-05 22:22:43 +00:00
Alasdair Kergon
db3c1ac1c8 Add printf format attributes to yes_no_prompt & dm_{sn,as}printf and fix a calle 2010-07-02 21:16:50 +00:00
Alasdair Kergon
8b2055719d Generate liblvm2app and libdevmapper exported symbols from header files.
Detection is simply by prefix - dm_ or lvm_ - and any additional symbols needed
but not detected this way are placed in .exported_symbols.
2010-06-25 18:17:38 +00:00
Alasdair Kergon
85691c0afb In some C++ standards, typeof is not reserved. 2010-06-23 17:03:14 +00:00
Zdenek Kabelac
7c15f34267 Fix typo: "INTERNAL ERROR" -> "INTERNAL_ERROR"
Author: Xinwei Hu
        xwhu at novell dot com
2010-06-23 12:54:46 +00:00
Milan Broz
eac8de9bfb Use flexible data[] in cmirrord request to prevent abort in runtime size checks. 2010-06-22 13:11:29 +00:00
Peter Rajnoha
566515c095 Use early udev synchronisation and update of dev nodes for clustered mirrors.
When using clustered mirrors, we need device nodes to be created during
processing of device tree, not at its end like we normally do (we need to
access the nodes in cmirror prematurely). Therefore we use a new flag called
"immediate_dev_node" stored in deptree's load_properties struct to instruct the
device tree processing code to immediately synchronize with udev and flush all
stacked node operations so the nodes are prepared for use.

For now, the immediate_dev_node is used for clustered mirrors during
processing the dm_tree_preload_children code only. We can add more later if
needed.
2010-06-21 08:54:32 +00:00
Milan Broz
c9c7d25c35 Remove C++ private keyword from headers.
Add extern C definition for libdevmapper, lvm2app and lvm2cmd.
2010-06-16 13:01:25 +00:00
Peter Rajnoha
ee83186ecc Add support for dm-mod module autoload.
A kernel patch is on its way for 2.6.35 adding support for dm-mod module
autoload. Udev v155 and higher is able to read static node information given
in modules.devname (extracted by depmod before) and will create such nodes
at its start. The first access to such node will load the module automatically
(directly in kernel) before the actual read/write operation is processed.
2010-06-01 16:08:13 +00:00
Peter Rajnoha
c0ea4c94a1 Use expected union semun for arguments in selected semaphore operations.
This is standard and expected use. It also prevents errors related with
misalignment of the arguments for semaphore operations on some architectures.
2010-05-27 15:02:56 +00:00
Zdenek Kabelac
30a653105c Fix copy&paste detection of kernel release version.
Add log_error to avoid return_0 without log_error.
2010-05-25 08:40:36 +00:00
Alasdair Kergon
ba61f84874 Replace strncmp kernel version number checks with proper ones 2010-05-24 23:11:34 +00:00
Alasdair Kergon
5782a38543 Choose between clustered log versions based on kernel version.
Add fixmes for broken strcmp.
2010-05-24 17:46:47 +00:00
Zdenek Kabelac
4ef2bf27a7 Update Copyright date for resently modifed files 2010-05-24 09:04:27 +00:00
Zdenek Kabelac
f3ef15ef6b Replicator: check open_count for parents of presuspend_node
For deactivation of Replicator check in advance that all heads
have open_count == 0. For this presuspend_node is used as all
head nodes are linking this control node.
2010-05-21 12:30:35 +00:00
Zdenek Kabelac
76d1aec8e0 Replicator: support deactivate of replicator-dev nodes
Introducing dm_tree_node_set_presuspend_node() for presuspending child
node (i.e. replicator control target) before deactivation of parent node
(i.e. replicator-dev target).

This patch presents no functional change to current dtree - only
replicator target currently sets presuspend node for dev nodes.
2010-05-21 12:27:02 +00:00
Zdenek Kabelac
b262f3e19e Replicator: libdm support
Introducing new API calls:
dm_tree_node_add_replicator_target()
dm_tree_node_add_replicator_dev_target().

Define new typedef dm_replicator_mode_t.
2010-05-21 12:24:15 +00:00
Milan Broz
b1d188894e Do not print encryption key in message debug output. 2010-05-13 13:31:30 +00:00
Zdenek Kabelac
fff111fe22 Add pkgconfigdir for placement of .pc files
Use easily overideable make install pkgconfigdir variable.
2010-05-11 08:57:02 +00:00
Zdenek Kabelac
75e69cd1b2 Switch to use Requires.private for devmapper.pc and lvm2app.pc
Use Requires.private: instead of Libs.private:
Use UDEV_PC and SELINUX_PC for Require.private:

It looks like usage of Requires.private is prefered from Libs.private.
However pkg-config documentation is really poor here. But here is
short outcome:

There is a difference in Libs.private: and Requires.private: where
we specify libselinux instead of  -lselinux -lsepol.

We leave resolving of query like 'pkg-config --libs --static devmapper'
on taking proper selinux and udev libs to their .pc files instead of
hardcoding them into our .pc file which is might give incorrect answer.
- i.e. dependency of libselinux package might change and we may return
wrong list of linked libraries.

http://bugs.freedesktop.org/show_bug.cgi?id=4738
http://err.no/personal/blog/tech/2008-03-25-18-07_pkg-config,_sonames_and_Requires.private
2010-05-11 08:54:11 +00:00
Zdenek Kabelac
3283f817eb Add dm_list_splice() to join two lists. 2010-05-06 10:10:15 +00:00
Peter Rajnoha
209c58bb35 Specify exactly which ioctl doesn't have a cookie set (for better debugging). 2010-05-03 22:08:38 +00:00
Peter Rajnoha
e92d87cef6 Synchronize "remove" dm task while reverting unsuccessful "create" dm task
(with table provided).

This remove ioctl generates udev events like any other hence it needs to be
synchronized properly as well. Also, add dm task type in debug log when
setting a cookie (for better debugging).
2010-05-03 21:06:53 +00:00
Peter Rajnoha
942d6ef29f Add support for new IMPORT{db} udev rule.
This rule appeared in udev v152 and it helps us to support spurious events
where we didn't have any flags set (events originated in udevadm trigger
or the watch rule). These flags are important to direct the rule application.
Now, with the help of this rule, we can regenerate old udev db content.
To implement this correctly, we need to flag all proper DM udev events with
DM_UDEV_PRIMARY_SOURCE_FLAG. That happens automatically for all ioctls
generating events originated in libdevmapper.
2010-04-28 13:37:36 +00:00
Peter Rajnoha
257848229d Also include udev libs in libdevmapper.pc when udev_sync is enabled. 2010-04-26 09:05:50 +00:00
Alasdair Kergon
616eda51e3 don't optimise anything with TARGET_TRANS to avoid intefering with the matcher's counting 2010-04-22 23:09:18 +00:00
Alasdair Kergon
e07803f976 Cache bitset locations to speed up _calc_states. (kabi) 2010-04-22 20:35:24 +00:00
Alasdair Kergon
92f67fed0a avoid ORs rightmost 2010-04-22 20:15:00 +00:00
Alasdair Kergon
d9c67df256 Move regex printing code from test to main tree (may use in debug messages).
Yet another optimiser fix attempt.
2010-04-22 17:42:38 +00:00
Alasdair Kergon
0e8134800e Don't walk rightmost through NULL pointers. 2010-04-22 14:33:14 +00:00
Alasdair Kergon
6d3dd87bba Fix rightmost rotation, and use LEFT and RIGHT to make symmetry more obvious. 2010-04-22 13:42:34 +00:00
Alasdair Kergon
cab2199de8 fix leftmost rotation 2010-04-22 13:18:27 +00:00
Alasdair Kergon
dbd20bbdb7 Still not satisfactory... 2010-04-22 03:24:24 +00:00
Alasdair Kergon
b2bd4e2d8d Add a regex optimisation pass for shared character prefixes. 2010-04-20 22:31:22 +00:00
Alasdair Kergon
49ada7a2c3 Add dm_bitset_equal to libdevmapper. 2010-04-20 13:58:22 +00:00
Alasdair Kergon
a120520fa2 missed files from last commit 2010-04-20 10:58:18 +00:00
Alasdair Kergon
2b707b6806 Add dm_bit_and. (ejt) 2010-04-19 21:23:01 +00:00
Alasdair Kergon
175b8684a0 fix last commit 2010-04-19 21:10:20 +00:00
Alasdair Kergon
da336123c2 Simplify dm_bitset_create. (ejt) 2010-04-19 21:08:32 +00:00
Alasdair Kergon
72ab7270e0 Speed up dm_bit_get_next with ffs(). 2010-04-19 17:17:55 +00:00
Zdenek Kabelac
23b059e7b7 INSTALL rules updates
Patch is inspired by Debian's extra patch.

- removes OWNER & GROUP make vars they are parts of INSTALL command.
- adds INSTALL_PROGRAM for executable, uses $(INSTALL)
- adds INSTALL_DATA for non-executable data, uses ($INSTALL)
- adds INSTALL_WDATA for writable non-executable data, uses ($INSTALL)
- adds configure option --enable-write_install - to support
  installatin of writable files used by distribution
- replaces usage of ifeq @LIB_SUFFIX@ with $(LIB_SUFFIX)
- installs .a files from static builds without executable flag
- installs .a files to $(usrlibdir) instead of $(libdir)
- installs all static binaries to $(staticdir)
- create .so links for devel package in $(usrlibdir) instead of
  $(libdir)
- makes .so and .so.LIB_VERSION files within builddir
- removes VERSIONED_SHLIB and created versioned LIB_SHARED automagicaly
- install LIB_SHARED via install_lib_shared target
- install plugins via install_lib_shared_plugin target
- prints whole 'install' command during installation instead of less
  informative "Installing  $(something) $(somewhere)"
- install multiple man pages with one INSTALL command
- use DISTCLEAN_TARGETS instead of creating multiple distclean targets
2010-04-09 21:42:48 +00:00