From fe341eb151ec0ba80fb74edd6201fc78e5232b6b Mon Sep 17 00:00:00 2001 From: Darrick J. Wong Date: Wed, 9 Sep 2020 14:21:06 -0700 Subject: xfs: ensure that fpunch, fcollapse, and finsert operations are aligned to rt extent size Make sure that any fallocate operation that requires the range to be block-aligned also checks that the range is aligned to the realtime extent size. Signed-off-by: Darrick J. Wong Reviewed-by: Christoph Hellwig --- fs/xfs/xfs_bmap_util.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) (limited to 'fs/xfs') diff --git a/fs/xfs/xfs_bmap_util.c b/fs/xfs/xfs_bmap_util.c index 5123f82f2477..f2a8a0e75e1f 100644 --- a/fs/xfs/xfs_bmap_util.c +++ b/fs/xfs/xfs_bmap_util.c @@ -946,6 +946,14 @@ xfs_free_file_space( startoffset_fsb = XFS_B_TO_FSB(mp, offset); endoffset_fsb = XFS_B_TO_FSBT(mp, offset + len); + /* We can only free complete realtime extents. */ + if (XFS_IS_REALTIME_INODE(ip)) { + xfs_extlen_t extsz = xfs_get_extsz_hint(ip); + + if ((startoffset_fsb | endoffset_fsb) & (extsz - 1)) + return -EINVAL; + } + /* * Need to zero the stuff we're not freeing, on disk. */ @@ -1139,6 +1147,14 @@ xfs_insert_file_space( trace_xfs_insert_file_space(ip); + /* We can only insert complete realtime extents. */ + if (XFS_IS_REALTIME_INODE(ip)) { + xfs_extlen_t extsz = xfs_get_extsz_hint(ip); + + if ((stop_fsb | shift_fsb) & (extsz - 1)) + return -EINVAL; + } + error = xfs_bmap_can_insert_extents(ip, stop_fsb, shift_fsb); if (error) return error; -- cgit v1.2.3