Mikulas Patocka 62e082430e dm ioctl: fix alignment of event number in the device list ... The size of struct dm_name_list is different on 32-bit and 64-bit kernels (so "(nl + 1)" differs between 32-bit and 64-bit kernels). This mismatch caused some harmless difference in padding when using 32-bit or 64-bit kernel. Commit 23d70c5e52 ("dm ioctl: report event number in DM_LIST_DEVICES") added reporting event number in the output of DM_LIST_DEVICES_CMD. This difference in padding makes it impossible for userspace to determine the location of the event number (the location would be different when running on 32-bit and 64-bit kernels). Fix the padding by using offsetof(struct dm_name_list, name) instead of sizeof(struct dm_name_list) to determine the location of entries. Also, the ioctl version number is incremented to 37 so that userspace can use the version number to determine that the event number is present and correctly located. In addition, a global event is now raised when a DM device is created, removed, renamed or when table is swapped, so that the user can monitor for device changes. Reported-by: Eugene Syromiatnikov <esyr@redhat.com> Fixes: 23d70c5e52 ("dm ioctl: report event number in DM_LIST_DEVICES") Cc: stable@vger.kernel.org # 4.13 Signed-off-by: Mikulas Patocka <mpatocka@redhat.com> Signed-off-by: Mike Snitzer <snitzer@redhat.com>		2017-09-25 11:18:29 -04:00
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acpi	ACPI / bus: Make ACPI_HANDLE() work for non-GPL code again	2017-09-19 22:42:31 +02:00
asm-generic	Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2017-09-14 20:01:41 -07:00
clocksource
crypto
drm	lib/interval_tree: fast overlap detection	2017-09-08 18:26:49 -07:00
dt-bindings	Merge branch '4.14-features' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus	2017-09-15 20:43:33 -07:00
keys
kvm
linux	DeviceTree fixes for 4.14:	2017-09-24 16:04:12 -07:00
math-emu
media	media updates for v4.14-rc1	2017-09-07 12:53:14 -07:00
memory
misc
net	net: prevent dst uses after free	2017-09-21 20:42:15 -07:00
pcmcia
ras
rdma	More RDMA work and some op-structure constification from Chuck Lever,	2017-09-09 13:31:49 -07:00
scsi	SCSI misc on 20170913	2017-09-13 10:47:14 -07:00
soc	ARM: SoC driver updates for v4.14	2017-09-10 20:40:00 -07:00
sound	sound updates for 4.14-rc1	2017-09-07 12:44:53 -07:00
target
trace	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2017-09-16 11:28:59 -07:00
uapi	dm ioctl: fix alignment of event number in the device list	2017-09-25 11:18:29 -04:00
video
xen	xen, arm64: drop dummy lookup_address()	2017-09-19 09:25:05 -04:00