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Subject[PATCH v13 44/51] xfs: Don't allow unmapped identifiers in richacls
Date
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/xfs/xfs_richacl.c | 4 ++++
1 file changed, 4 insertions(+)

diff --git a/fs/xfs/xfs_richacl.c b/fs/xfs/xfs_richacl.c
index f8f5a62..4a2e21a 100644
--- a/fs/xfs/xfs_richacl.c
+++ b/fs/xfs/xfs_richacl.c
@@ -78,6 +78,10 @@ __xfs_set_richacl(struct inode *inode, struct richacl *acl, int xflags)
if (!acl)
return xfs_remove_richacl(inode);

+ /* Don't allow acls with unmapped identifiers. */
+ if (richacl_has_unmapped_identifiers(acl))
+ return -EINVAL;
+
if (richacl_equiv_mode(acl, &mode) == 0) {
xfs_set_mode(inode, mode);
return xfs_remove_richacl(inode);
--
2.5.0


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