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(parent: a85f1a9) | patch
dm ioctl: Refuse to create device named "." or ".."
authorDemi Marie Obenour <demi@invisiblethingslab.com>
Sat, 3 Jun 2023 14:52:44 +0000 (10:52 -0400)
committerMike Snitzer <snitzer@kernel.org>
Fri, 23 Jun 2023 14:31:52 +0000 (10:31 -0400)
commit81ca2dbefaabe1a2ca1c7cfc84dfd45c072c82a6
treeea80c80e1d1ef1cb7375fcb64edbd9d41401d747tree | snapshot
parenta85f1a9de91a59cd9b12d60f631cbda9c56a1c3ccommit | diff
dm ioctl: Refuse to create device named "." or ".."

Using either of these is going to greatly confuse userspace, as they are
not valid symlink names and so creating the usual /dev/mapper/NAME
symlink will not be possible.  As creating a device with either of these
names is almost certainly a userspace bug, just error out.

Signed-off-by: Demi Marie Obenour <demi@invisiblethingslab.com>
Signed-off-by: Mike Snitzer <snitzer@kernel.org>
drivers/md/dm-ioctl.c diff | blob | blame | history
Linux 6.x block layer and io_uring tree(s)