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Commit Graph

27 Commits

Author SHA1 Message Date
Zdenek Kabelac
ee13f265f0 libdm: use dm_log_with_errno always
Instead of compiling 2 log call for 2 different logging functions,
and runtime decide which version to use - use only 'newer' function
and when user sets his own OLD dm_log logging translate it runtime
for old arg list set.

The positive part is - we get shorter generated library,
on the negative part this translation means, we always have evaluate
all args and print the message into local on stack buffer, before
we can pass this buffer to the users' logging function with proper
expected parameters (and such function may later decide to discard
logging based on message level so whole printing was unnecessary).
2016-11-03 17:49:07 +01:00
Zdenek Kabelac
fcbef05aae doc: change fsf address
Hmm rpmlint suggest fsf is using a different address these days,
so lets keep it up-to-date
2016-01-21 12:11:37 +01:00
Alasdair G Kergon
1906619187 libdm: Add DM_INTERNAL_SUSPEND_FLAG.
Still needs to be reported by dmsetup.
2015-04-23 18:39:04 +01:00
Alasdair G Kergon
8a7682cbc9 libdm: Add DM_DEFERRED_REMOVE to dm-ioctl.h. 2014-08-15 13:45:55 +01:00
Zdenek Kabelac
30a81e5989 cleanup: self compilable headers 2013-12-12 13:28:19 +01:00
Alasdair G Kergon
527db4645f gcc: replace #ifdef linux with __linux__ 2013-11-13 13:56:29 +00:00
Alasdair G Kergon
d96b854ac0 ioctl: add DM_DATA_OUT_FLAG to dm-ioctl.h 2013-05-17 17:06:40 +01:00
Alasdair G Kergon
7f747a0d73 logging: add debug classes
Add log/debug_classes to lvm.conf to allow debug messages to be
classified and filtered at runtime.

The dm_errno field is only used by log_error(), so I've redefined it
for log_debug() messages to hold the message class.

By default, all existing messages appear, but we can add categories that
generate high volumes of data, such as logging all traffic to/from
lvmetad.
2013-01-07 22:25:19 +00:00
Alasdair G Kergon
25ae0b39b7 dmsetup: allow --noflush with status/wait for thin
Allow --noflush with dmsetup status and wait (for thin target 1.3.0 /
ioctl 4.23.0).
2012-07-27 20:03:07 +01:00
Jonathan Earl Brassow
3b032963d5 cmirrord now returns log name to kernel in CTR so it can be registered
Version 2 of the userspace log protocol accepts return information during the
DM_ULOG_CTR exchange.  The return information contains the name of the log
device that is being used (if there is one).  The kernel can then register the
device via 'dm_get_device'.  Amoung other things, this allows for userspace to
assemble a correct dependency tree of devices - critical for LVM handling of
suspend/resume calls.

Also, update dm-log-userspace.h to match the kernel header associated with
this protocol change.  (Includes a version inc.)
2011-10-14 14:18:49 +00:00
Jonathan Earl Brassow
6635332e1b Update stale libdm/misc/dm-log-userspace.h
The upstream kernel version that this file mirrors has changed, here is the
commit message:

commit 86a54a4802df10d23ccd655e2083e812fe990243
Author: Jonathan Brassow <jbrassow@redhat.com>
Date:   Thu Jan 13 19:59:52 2011 +0000

    dm log userspace: add version number to comms

    This patch adds a 'version' field to the 'dm_ulog_request'
    structure.

    The 'version' field is taken from a portion of the unused
    'padding' field in the 'dm_ulog_request' structure.  This
    was done to avoid changing the size of the structure and
    possibly disrupting backwards compatibility.

    The version number will help notify user-space daemons
    when a change has been made to the kernel/userspace
    log API.

    Signed-off-by: Jonathan Brassow <jbrassow@redhat.com>
    Signed-off-by: Mike Snitzer <snitzer@redhat.com>
    Signed-off-by: Alasdair G Kergon <agk@redhat.com>
2011-10-14 14:04:05 +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
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
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
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
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
ac3691f70e Add support for ioctl's DM_UEVENT_GENERATED_FLAG.
We need to know whether we should wait for any uevent or not when
using udev_sync. A kernel patch was posted recently that changed the
way uevents are sent on dm device resume - it is sent only if the
device has been suspended before. There's also a new DM_UEVENT_GENERATED_FLAG
in the ioctl to notify userspace whether the event was generated.

If the uevent was not generated (e.g. the situation where the device is
*not* suspended and we call a resume), we just call dm_udev_complete
explicitly from within libdevmapper itself to prevent infinite waiting
while trying to synchronise with udev processing.
2010-03-23 14:38:37 +00:00
Alasdair Kergon
f7729ec651 more build fixes 2010-01-19 01:10:46 +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
Jonathan Earl Brassow
afa8ea4078 Cluster log server (clogd): Add new build files.
Might be a good idea to add the new files to the repository.  :(
2009-08-13 20:51:41 +00:00
Alasdair Kergon
252239bdac Add default udev rules.
Update dm-ioctl.h comments.
2009-08-03 18:44:54 +00:00
Alasdair Kergon
9fac443591 Add log_errno to set a specific errno and replace log_error in due course. 2009-07-16 00:52:06 +00:00
Alasdair Kergon
eac6599c5e New LOG_MESG macro to fix file/line number logging for memory leaks after
LOG_LINENO macro was added.
2009-07-15 14:18:38 +00:00
Alasdair Kergon
a9cb6969b0 Add dm_log_with_errno and dm_log_with_errno_init, deprecating the old
Change plog to use dm_log_with_errno unless deprecated dm_log_init was used.
Rename plog macro to LOG_LINE and use in dm_dump_memory_debug.
2009-07-10 09:59:37 +00:00
Alasdair Kergon
3e5b6ed214 more tweaking to get things to compile - dmlib.h for log fns, list.h 2008-11-03 18:59:59 +00:00
Alasdair Kergon
301fd74ecf Add dm-logging.h ready for libdevmapper. 2008-10-30 17:54:12 +00:00
Alasdair Kergon
10a9579a63 Add libdm subdir to begin merging the device-mapper tree. 2008-10-30 15:31:33 +00:00