diff options
| author | Roberto Sassu <roberto.sassu@huawei.com> | 2024-02-15 11:31:05 +0100 |
|---|---|---|
| committer | Paul Moore <paul@paul-moore.com> | 2024-02-15 23:43:44 -0500 |
| commit | 2d705d8024143c272a764320c880ccd3230bb699 (patch) | |
| tree | 4c035efcf4b0ef325be26899493647ea3d343f6a /fs/posix_acl.c | |
| parent | 8b9d0b825c6573d654c8b8039ea79920926305c2 (diff) | |
| download | linux-stable-2d705d8024143c272a764320c880ccd3230bb699.tar.gz linux-stable-2d705d8024143c272a764320c880ccd3230bb699.tar.bz2 linux-stable-2d705d8024143c272a764320c880ccd3230bb699.zip | |
security: Introduce inode_post_remove_acl hook
In preparation for moving IMA and EVM to the LSM infrastructure, introduce
the inode_post_remove_acl hook.
At inode_remove_acl hook, EVM verifies the file's existing HMAC value. At
inode_post_remove_acl, EVM re-calculates the file's HMAC with the passed
POSIX ACL removed and other file metadata.
Other LSMs could similarly take some action after successful POSIX ACL
removal.
The new hook cannot return an error and cannot cause the operation to be
reverted.
Signed-off-by: Roberto Sassu <roberto.sassu@huawei.com>
Reviewed-by: Stefan Berger <stefanb@linux.ibm.com>
Acked-by: Casey Schaufler <casey@schaufler-ca.com>
Reviewed-by: Mimi Zohar <zohar@linux.ibm.com>
Acked-by: Christian Brauner <brauner@kernel.org>
Signed-off-by: Paul Moore <paul@paul-moore.com>
Diffstat (limited to 'fs/posix_acl.c')
| -rw-r--r-- | fs/posix_acl.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/posix_acl.c b/fs/posix_acl.c index 7556ee9f8a51..0d2371240c1b 100644 --- a/fs/posix_acl.c +++ b/fs/posix_acl.c @@ -1246,6 +1246,7 @@ retry_deleg: error = -EIO; if (!error) { fsnotify_xattr(dentry); + security_inode_post_remove_acl(idmap, dentry, acl_name); evm_inode_post_remove_acl(idmap, dentry, acl_name); } |