[PATCH v13 44/51] xfs: Don't allow unmapped identifiers in richacls
From: Andreas Gruenbacher <agruenba@redhat.com>
Date: 2015-11-03 15:17:20
Also in:
linux-cifs, linux-ext4, linux-fsdevel, linux-nfs, linux-xfs, lkml
Subsystem:
filesystems (vfs and infrastructure), the rest, xfs filesystem · Maintainers:
Alexander Viro, Christian Brauner, Linus Torvalds, Carlos Maiolino
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