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Commit Graph

19 Commits

Author SHA1 Message Date
Alasdair G Kergon
f853a1bc7a libdm: dmsetup measure support for IMA
Add support for DM_IMA_MEASUREMENT_FLAG with
DM_TABLE_STATUS_CMD.

This feature requires DM version 4.45  (5.15+ kernels)
2021-09-23 16:49:28 +02:00
Zdenek Kabelac
566c2f1828 libdm: support DM_NAME_LIST_FLAG
Kernel patch 8b638081bd4520f63db1defc660666ec5f65bc15
introduced support to return UUID in DM_LIST_DEVICES_CMD.

Useful when asking for UUID of each device where the list
could be now returned directly with NAME && UUID for each device.

Returning UUID is done in backward-compatible way. There's one unused
32-bit word value after the event number. This patch sets the bit
DM_NAME_LIST_FLAG_HAS_UUID if UUID is present and
DM_NAME_LIST_FLAG_DOESNT_HAVE_UUID if it isn't (if none of these bits is
set, then we have an old kernel that doesn't support returning UUIDs). The
UUID is stored after this word. The 'next' value is updated to point after
the UUID, so that old version of libdevmapper will skip the UUID without
attempting to interpret it.
2021-09-23 16:49:14 +02:00
Zdenek Kabelac
9eafd44734 gcc: use more zero length arrays
Define last array struct member with zero size.
2021-09-22 17:18:50 +02:00
Zdenek Kabelac
fd96f1014b gcc: zero-sized array to fexlible array C99
Switch remaining zero sized struct to flexible arrays to be C99
complient.

These simple rules should apply:

- The incomplete array type must be the last element within the structure.
- There cannot be an array of structures that contain a flexible array member.
- Structures that contain a flexible array member cannot be used as a member of another structure.
- The structure must contain at least one named member in addition to the flexible array member.

Although some of the code pieces should be still improved.
2020-09-01 17:57:50 +02:00
Mikulas Patocka
667b33dd3b dm: introduce DM_GET_TARGET_VERSION
Adds support for the DM_GET_TARGET_VERSION to dmsetup.
It introduces a new comman "target-version" that will accept list
of targets and print their version.

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
2019-10-04 17:31:55 +02:00
Alasdair G Kergon
29834b6e91 kernel: Refresh dm-ioctl.h
Adds DM_DEV_ARM_POLL
2017-09-14 17:50:56 +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
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
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
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
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
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
Alasdair Kergon
252239bdac Add default udev rules.
Update dm-ioctl.h comments.
2009-08-03 18:44:54 +00:00
Alasdair Kergon
10a9579a63 Add libdm subdir to begin merging the device-mapper tree. 2008-10-30 15:31:33 +00:00