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Commit Graph

137 Commits

Author SHA1 Message Date
Milan Broz
fb3bcb9f74 Wipe dm-ioctl parameters in memory after use. 2010-04-07 15:57:20 +00:00
Peter Rajnoha
91345610f8 Strictly require libudev if udev_sync is used.
This prevents some confusion when libudev was not found so udev_sync was disabled
automatically. Configure was successful though giving only a tiny warning.

Also, if "dmsetup udevcreatecookie" is used, never return 0x000000 as a result if
udev is not running and keep the output blank.
2010-03-23 14:43:18 +00:00
Milan Broz
c948101ccd Add --help dmsetup option as the synonym for help command. 2010-03-08 16:05:07 +00:00
Peter Rajnoha
f0e073fcdc Several changes in dmsetup and libdevmapper:
- add DM_UDEV_DISABLE_LIBRARY_FALLBACK udev flag to rely on udev only

 - export dm_udev_create_cookie function to create new cookies on demand

 - add --udevcookie, udevcreatecookie and udevreleasecookie for dmsetup
   (to support "udev transactions" where one cookie value can be used for
    several dmsetup calls)

 - don't use DM_UDEV_DISABLE_CHECKING env. var. anymore and set the state
   automatically (based on udev and libdevmapper dev path comparison)
2010-02-15 16:21:33 +00:00
Zdenek Kabelac
04bde319a9 Cleanup gcc warning: cast discards qualifiers from pointer target type
API of the library should remain the same as the 'const' is not
mangled into the function name in C.
2010-01-14 10:15:23 +00:00
Peter Rajnoha
d2b43c4b34 Add support to disable udev checking: DM_UDEV_DISABLE_CHECKING=1 env. variable.
Sometimes it is really needed to switch off udev checking and the warnings we show when
we detect that udev has not done its job right - the messages like "Udev should have done
this and that. Falling back to direct node creation/removal. " etc.

This would be especially handy while setting DM_DEV_DIR env var that could be set to a
different location than standard /dev (udev can't create nodes/symlinks out of that one
directory that is configured into udevd). The exact same situation happens while we're
running our tests.
2010-01-11 15:36:24 +00:00
Peter Rajnoha
4998a0041f Add --noudevrules option for dmsetup to disable /dev node management by udev. 2010-01-07 19:45:12 +00:00
Zdenek Kabelac
b1ebf028de Cleanup returns for void functions. 2009-12-11 13:16:37 +00:00
Zdenek Kabelac
c8d8f74188 Fix coredump and memory leak for 'dmsetup help -c' 2009-12-11 13:04:30 +00:00
Peter Rajnoha
584d1fb7d1 Support udev flags even when udev_sync is disabled or not compiled in.
This provides better support for environments where udev rules are installed
but udev_sync is not compiled in (however, using udev_sync is highly
recommended). It also provides consistent and expected functionality even
when '--noudevsync' option is used.

There is still requirement for kernel >= 2.6.31 for the flags to work though
(it uses DM cookies to pass the flags into the kernel and set them in udev
event environment that we can read in udev rules).
2009-11-13 12:43:21 +00:00
Alasdair Kergon
9abf5e70be Add support for querying a device's inactive table.
Currently this data is invisible to userspace.
Requires dm >= 4.16 (likely to be in linux 2.6.33).
2009-11-06 00:43:08 +00:00
Peter Rajnoha
421671b1c2 Several changes to udev support code:
- we have these levels when the udev rules are processed:
   10-dm.rules --> [11-dm-<subsystem>.rules] --> [12-dm-permissions.rules] -->
   13-dm-disk.rules --> [...all the other foreign rules...] --> 95-dm-notify.rules

 - each level can be disabled now by
   DM_UDEV_DISABLE_{DM, SUBSYSTEM, DISK, OTHER}_RULES_FLAG

 - add DM_UDEV_DISABLE_DM_RULES_FLAG to disable 10-dm.rules

 - add DM_UDEV_DISABLE_OTHER_RULES_FLAG to disable all the other (non-dm) rules.
   We cutoff these rules by using the 'last_rule', so this one should really be
   used with great care and in well-founded situations. We use this for lvm's
   hidden and layer devices now.

 - add a parameter for add_dev_node, rm_dev_node and rename_dev_node so it's
   possible to switch on/off udev checks

 - use DM_UDEV_DISABLE_DM_RULES_FLAG and DM_UDEV_DISABLE_SUBSYSTEM_RULES_FLAG
   if there's no cookie set and we have resume, remove and rename ioctl.
   This could happen when someone uses the libdevmapper that is compiled with
   udev_sync but the software does not make use of it. This way we can switch
   off the rules and fallback to libdevmapper node creation so there's no
   udev/libdevmapper race.
2009-10-26 14:29:33 +00:00
Peter Rajnoha
5f1f31f942 Add udev flags support in libdevmapper and provide 'dmsetup udevflags' command to decode them. 2009-10-22 12:55:47 +00:00
Peter Rajnoha
9a9026c29f Add y|--yes option for dmsetup to provide a default 'YES' answer to questions. 2009-09-11 15:53:57 +00:00
Peter Rajnoha
b23fadb965 Fix semaphore includes in dmsetup for udev sync. 2009-08-06 15:56:50 +00:00
Peter Rajnoha
e637f732ed Add 'udevcookies' command for dmsetup. 2009-08-06 15:05:10 +00:00
Peter Rajnoha
f9ff23dffe Add 'udevcomplete_all' command for dmsetup. Export DM_COOKIE_MAGIC in libdevmapper.h. 2009-08-06 15:04:30 +00:00
Alasdair Kergon
a74be32bf6 Manage without dm_udev_cleanup? 2009-08-03 18:01:45 +00:00
Alasdair Kergon
f86117e3d5 cleanup some ignored return values & 'stack's 2009-08-03 11:20:15 +00:00
Alasdair Kergon
2c0dfdf839 Add udevcomplete and --noudevwait to dmsetup. 2009-07-31 17:51:45 +00:00
Mikulas Patocka
3395d72881 Change exit() to _exit() in the child process. exit flushes stdio file buffers,
_exit doesn't. If there were some open files, an error in exec and subsequent
exit() would cause the buffers to be flushed twice.

Example:

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/wait.h>

int main()
{
	printf("buu");
	if (!fork()) {
		execl("/bin/true-not-exists", "/bin/true", NULL);
		exit(1);
	}
	wait(NULL);
	return 0;
}

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com

---
 daemons/dmeventd/libdevmapper-event.c |    2 +-
 lib/misc/lvm-exec.c                   |    2 +-
 test/harness.c                        |    3 ++-
 tools/dmsetup.c                       |    2 +-
 4 files changed, 5 insertions(+), 4 deletions(-)
2009-07-13 21:26:41 +00:00
Alasdair Kergon
896fc66e32 Add splitname. 2009-06-03 20:44:42 +00:00
Alasdair Kergon
9767eb448d Add subsystem, vg_name, lv_name, lv_layer fields to dmsetup reports. 2009-06-03 18:35:39 +00:00
Peter Rajnoha
2dce31a16a Fix segfault when using -U, -G and -M options in dmsetup. 2009-04-24 11:30:49 +00:00
Alasdair Kergon
e8e8fa1ed7 drop explicit libdevmapper.h 2008-10-30 17:52:06 +00:00
Alasdair Kergon
0b1bf1f56b Split out dm-logging.h from log.h 2008-10-30 17:24:04 +00:00
Alasdair Kergon
ca8d363d2c Add --rows to dmsetup. 2008-06-24 22:53:48 +00:00
Alasdair Kergon
f1839ac87c dmsetup --unquoted 2008-06-24 20:16:47 +00:00
Jim Meyering
dacf86a12d avoid compiler warning about cast in OFFSET_OF macro
* dmsetup/dmsetup.c (OFFSET_OF): Use an equivalent definition
that does not cast a pointer value to a narrower type.
2008-06-18 10:19:25 +00:00
Alasdair Kergon
db6056516e change --prefixes to --nameprefixes 2008-06-06 18:53:08 +00:00
Alasdair Kergon
14004cf20c Use 'active' for !suspended as the code already uses that. 2008-04-21 16:57:11 +00:00
Alasdair Kergon
82bacfc3b2 Add 3 new reporting colums: tables_loaded, readonly, suspended. 2008-04-21 13:16:30 +00:00
Alasdair Kergon
dd540781dc Add --prefixes to dmsetup
E.g. dmsetup info -c --prefixes

Again, might change the name of this option.
2008-04-21 11:59:22 +00:00
Alasdair Kergon
f44e3ff46a Calculate string size within dm_pool_grow_object. 2008-04-19 15:50:18 +00:00
Alasdair Kergon
8611f8851e pre-release 2007-12-05 17:05:04 +00:00
Alasdair Kergon
0ba25de173 read_ahead in report with underscore to match lvm2 field 2007-12-05 14:42:10 +00:00
Alasdair Kergon
f2aae88a7c fixme 2007-12-03 22:53:04 +00:00
Alasdair Kergon
0b7d16bc09 fixes 2007-12-03 22:48:36 +00:00
Alasdair Kergon
2d1eead2e8 read_ahead node ops 2007-11-30 14:59:57 +00:00
Alasdair Kergon
ca592a2745 refine specification of dmsetup readahead 2007-11-29 14:44:28 +00:00
Alasdair Kergon
52b8440916 add read_ahead functions to library and dmsetup --readahead
(Not live yet.)
2007-11-27 20:57:05 +00:00
Jim Meyering
06b8fee542 Allow $DM_DEV_DIR envvar to override default of "/dev".
* dmsetup/dmsetup.c (DEV_PATH): Remove definition.
(parse_loop_device_name): Add parameter: dev_dir.
Declare the "dev" parameter to be "const".
Use dev_dir, not DEV_PATH.  Handle the case in which dev_dir
does not end in a "/".
(_get_abspath): Declare "path" parameter "const", to match.
(_process_losetup_switches): Add parameter: dev_dir.
Pass dev_dir to parse_loop_device_name.
(_process_switches): Add parameter: dev_dir.
Pass dev_dir to _process_losetup_switches.
(main): Set dev_dir from the DM_DEV_DIR envvar, else to "/dev".
Call dm_set_dev_dir.
* lib/libdm-common.c (dm_set_dev_dir): Rewrite to be careful
about boundary conditions, now that dev_dir may be tainted.
* man/dmsetup.8: Mention $DM_DEV_DIR.


Author: Jim Meyering <meyering@redhat.com>
2007-10-09 12:14:48 +00:00
Alasdair Kergon
147d5faccf Fix inconsistent licence notices: executables are GPLv2; libraries LGPLv2.1. 2007-08-21 16:26:07 +00:00
Alasdair Kergon
ef4ed892da revert accidental change 2007-06-19 16:50:38 +00:00
Alasdair Kergon
64f0efd33f Fix dmsetup -o devno string termination. (1.02.20) 2007-06-19 15:47:20 +00:00
Alasdair Kergon
117d85978a Fix default dmsetup report buffering and add --unbuffered.
Add tree-based and dependency fields to dmsetup reports.
2007-06-15 18:20:28 +00:00
Alasdair Kergon
41d8dcd802 Add capability for tree-based fields to dmsetup reports. 2007-06-11 13:20:29 +00:00
Alasdair Kergon
44566dd46d configure.h isn't a system header 2007-04-27 18:01:45 +00:00
Alasdair Kergon
d59b2474e1 Fix segfault in 'dmsetup status' without --showkeys against crypt target. [nec] 2007-04-27 15:12:26 +00:00
Alasdair Kergon
8d2b0f24d3 Deal with some more compiler warnings. Hope this doesn't break anything... 2007-04-27 14:52:41 +00:00