tree b5a178a44464035f58e926b1d9ebed9a8880d4ad
parent dd141a4955d5ebbb3f4c7996796e86a3ac9ed57f
author Alexey Gladkov <legion@kernel.org> 1651585196 +0200
committer Eric W. Biederman <ebiederm@xmission.com> 1651616758 -0500

ipc: Check permissions for checkpoint_restart sysctls at open time

As Eric Biederman pointed out, it is possible not to use a custom
proc_handler and check permissions for every write, but to use a
.permission handler. That will allow the checkpoint_restart sysctls to
perform all of their permission checks at open time, and not need any
other special code.

Link: https://lore.kernel.org/lkml/87czib9g38.fsf@email.froward.int.ebiederm.org/
Fixes: 1f5c135ee509 ("ipc: Store ipc sysctls in the ipc namespace")
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: Alexey Gladkov <legion@kernel.org>
Link: https://lkml.kernel.org/r/65fa8459803830608da4610a39f33c76aa933eb9.1651584847.git.legion@kernel.org
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>