Don't allow acls which contain unmapped identifiers: they are meaningful for remote file systems only. Signed-off-by: Andreas Gruenbacher <agruenba@xxxxxxxxxx> --- fs/ext4/richacl.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/fs/ext4/richacl.c b/fs/ext4/richacl.c index 6758def..ca6e0cb 100644 --- a/fs/ext4/richacl.c +++ b/fs/ext4/richacl.c @@ -68,8 +68,13 @@ ext4_set_richacl(handle_t *handle, struct inode *inode, struct richacl *acl) int retval; if (acl) { - mode_t mode = inode->i_mode; + mode_t mode; + /* Don't allow acls with unmapped identifiers. */ + if (richacl_has_unmapped_identifiers(acl)) + return -EINVAL; + + mode = inode->i_mode; if (richacl_equiv_mode(acl, &mode) == 0) { inode->i_mode = mode; ext4_mark_inode_dirty(handle, inode); -- 2.4.3 -- To unsubscribe from this list: send the line "unsubscribe linux-nfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html