diff options
| author | Olga Kornievskaia <kolga@netapp.com> | 2021-02-27 06:37:55 +0300 |
|---|---|---|
| committer | Paul Moore <paul@paul-moore.com> | 2021-03-22 21:53:37 +0300 |
| commit | 69c4a42d72eb9b41e1c6e4bc9ab7f3650bf35f62 (patch) | |
| tree | 564b363284f41cce68ff9b55a2d0fa811bd8bfcf /include/linux/lsm_hooks.h | |
| parent | 431c3be16bd08728325814320e3603ec3284d542 (diff) | |
| download | linux-69c4a42d72eb9b41e1c6e4bc9ab7f3650bf35f62.tar.xz | |
lsm,selinux: add new hook to compare new mount to an existing mount
Add a new hook that takes an existing super block and a new mount
with new options and determines if new options confict with an
existing mount or not.
A filesystem can use this new hook to determine if it can share
the an existing superblock with a new superblock for the new mount.
Signed-off-by: Olga Kornievskaia <kolga@netapp.com>
Acked-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
[PM: tweak the subject line, fix tab/space problems]
Signed-off-by: Paul Moore <paul@paul-moore.com>
Diffstat (limited to 'include/linux/lsm_hooks.h')
| -rw-r--r-- | include/linux/lsm_hooks.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/include/linux/lsm_hooks.h b/include/linux/lsm_hooks.h index fb7f3193753d..97bb36d7e994 100644 --- a/include/linux/lsm_hooks.h +++ b/include/linux/lsm_hooks.h @@ -142,6 +142,12 @@ * @orig the original mount data copied from userspace. * @copy copied data which will be passed to the security module. * Returns 0 if the copy was successful. + * @sb_mnt_opts_compat: + * Determine if the new mount options in @mnt_opts are allowed given + * the existing mounted filesystem at @sb. + * @sb superblock being compared + * @mnt_opts new mount options + * Return 0 if options are compatible. * @sb_remount: * Extracts security system specific mount options and verifies no changes * are being made to those options. |