xfs: reject invalid flags combinations in XFS_IOC_ATTRLIST_BY_HANDLE
authorChristoph Hellwig <hch@lst.de>
Thu, 27 Feb 2020 01:30:28 +0000 (17:30 -0800)
committerDarrick J. Wong <darrick.wong@oracle.com>
Tue, 3 Mar 2020 04:55:51 +0000 (20:55 -0800)
commit4d542e4c1e2884da0f869b13cb145f93a1493f07
treedf61c93a70daefc32898df07aa5381001e6666bd
parent211683b21de959a647de74faedfdd8a5d189327e
xfs: reject invalid flags combinations in XFS_IOC_ATTRLIST_BY_HANDLE

While the flags field in the ABI and the on-disk format allows for
multiple namespace flags, an attribute can only exist in a single
namespace at a time. Hence asking to list attributes that exist
in multiple namespaces simultaneously is a logically invalid
request and will return no results. Reject this case early with
-EINVAL.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Chandan Rajendra <chandanrlinux@gmail.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
fs/xfs/xfs_ioctl.c
fs/xfs/xfs_ioctl32.c