[PATCH v12 41/49] ext4: Don't allow unmapped identifiers in richacls
From: Andreas Gruenbacher <agruenba@redhat.com>
Date: 2015-10-23 18:41:54
Also in:
linux-api, linux-cifs, linux-fsdevel, linux-nfs, linux-xfs, lkml
Subsystem:
ext4 file system, filesystems (vfs and infrastructure), the rest · Maintainers:
"Theodore Ts'o", Alexander Viro, Christian Brauner, Linus Torvalds
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 --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;
--
2.5.0