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fs/ioctl: Add a comment to keep the logic in sync with LSM policies

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Landlock's IOCTL support needs to partially replicate the list of
IOCTLs from do_vfs_ioctl().  The list of commands implemented in
do_vfs_ioctl() should be kept in sync with Landlock's IOCTL policies.

Suggested-by: Paul Moore <paul@paul-moore.com>
Suggested-by: Mickaël Salaün <mic@digikod.net>
Signed-off-by: Günther Noack <gnoack@google.com>
Link: https://lore.kernel.org/r/20240419161122.2023765-12-gnoack@google.com
Signed-off-by: Mickaël Salaün <mic@digikod.net>
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Günther Noack 2024-04-19 16:11:22 +00:00 committed by Mickaël Salaün
parent 943aa818cd
commit d1654fd98b
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fs/ioctl.c
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@ -796,6 +796,9 @@ static int ioctl_get_fs_sysfs_path(struct file *file, void __user *argp)
* *
* When you add any new common ioctls to the switches above and below, * When you add any new common ioctls to the switches above and below,
* please ensure they have compatible arguments in compat mode. * please ensure they have compatible arguments in compat mode.
*
* The LSM mailing list should also be notified of any command additions or
* changes, as specific LSMs may be affected.
*/ */
static int do_vfs_ioctl(struct file *filp, unsigned int fd, static int do_vfs_ioctl(struct file *filp, unsigned int fd,
unsigned int cmd, unsigned long arg) unsigned int cmd, unsigned long arg)