diff mbox

[v11,40/48] ext4: Don't allow unmapped identifiers in richacls

Message ID 1445008706-15115-41-git-send-email-agruenba@redhat.com (mailing list archive)
State New, archived
Headers show

Commit Message

Andreas Gruenbacher Oct. 16, 2015, 3:18 p.m. UTC
Don't allow acls which contain unmapped identifiers: they are meaningful
for remote file systems only.

Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
---
 fs/ext4/richacl.c | 4 ++++
 1 file changed, 4 insertions(+)
diff mbox

Patch

diff --git a/fs/ext4/richacl.c b/fs/ext4/richacl.c
index 906d048..2115385 100644
--- a/fs/ext4/richacl.c
+++ b/fs/ext4/richacl.c
@@ -74,6 +74,10 @@  __ext4_set_richacl(handle_t *handle, struct inode *inode, struct richacl *acl)
 	int retval, size;
 	void *value;
 
+	/* Don't allow acls with unmapped identifiers. */
+	if (richacl_has_unmapped_identifiers(acl))
+		return -EINVAL;
+
 	if (richacl_equiv_mode(acl, &mode) == 0) {
 		inode->i_ctime = ext4_current_time(inode);
 		inode->i_mode = mode;