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alistair23-linux/fs/xfs/libxfs
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Christoph Hellwig 0c1d9e4a61 xfs: simplify validation of the unwritten extent bit 
XFS only supports the unwritten extent bit in the data fork, and only if
the file system has a version 5 superblock or the unwritten extent
feature bit.

We currently have two routines that validate the invariant:
xfs_check_nostate_extents which return -EFSCORRUPTED when it's not met,
and xfs_validate_extent that triggers and assert in debug build.

Both of them iterate over all extents of an inode fork when called,
which isn't very efficient.

This patch instead adds a new helper that verifies the invariant one
extent at a time, and calls it from the places where we iterate over
all extents to converted them from or two the in-memory format.  The
callers then return -EFSCORRUPTED when reading invalid extents from
disk, or trigger an assert when writing them to disk.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
2017-04-25 09:40:41 -07:00
..
xfs_ag_resv.c xfs: use per-AG reservations for the finobt 2017-01-25 07:49:35 -08:00
xfs_ag_resv.h xfs: set up per-AG free space reservations 2016-09-19 10:30:52 +10:00
xfs_alloc.c xfs: create a function to query all records in a btree 2017-04-03 15:18:17 -07:00
xfs_alloc.h xfs: create a function to query all records in a btree 2017-04-03 15:18:17 -07:00
xfs_alloc_btree.c xfs: plumb in needed functions for range querying of the freespace btrees 2017-04-03 15:18:17 -07:00
xfs_alloc_btree.h
xfs_attr.c xfs: remove racy hasattr check from attr ops 2017-01-25 07:53:43 -08:00
xfs_attr_leaf.c xfs: ignore leaf attr ichdr.count in verifier during log replay 2016-12-09 16:49:47 +11:00
xfs_attr_leaf.h Merge branch 'xfs-4.10-misc-fixes-3' into for-next 2016-12-07 17:42:30 +11:00
xfs_attr_remote.c xfs: rename flist/free_list to dfops 2016-08-03 11:19:29 +10:00
xfs_attr_remote.h
xfs_attr_sf.h xfs: move struct xfs_attr_shortform to xfs_da_format.h 2016-02-08 15:00:01 +11:00
xfs_bit.c libxfs: Optimize the loop for xfs_bitmap_empty 2016-01-04 16:10:19 +11:00
xfs_bit.h
xfs_bmap.c xfs: simplify validation of the unwritten extent bit 2017-04-25 09:40:41 -07:00
xfs_bmap.h xfs: simplify validation of the unwritten extent bit 2017-04-25 09:40:41 -07:00
xfs_bmap_btree.c xfs: simplify validation of the unwritten extent bit 2017-04-25 09:40:41 -07:00
xfs_bmap_btree.h xfs: simplify validation of the unwritten extent bit 2017-04-25 09:40:41 -07:00
xfs_btree.c xfs: create a function to query all records in a btree 2017-04-03 15:18:17 -07:00
xfs_btree.h xfs: create a function to query all records in a btree 2017-04-03 15:18:17 -07:00
xfs_cksum.h xfs: optimise CRC updates 2016-12-05 14:40:32 +11:00
xfs_da_btree.c xfs: fail _dir_open when readahead fails 2017-02-02 15:13:58 -08:00
xfs_da_btree.h xfs: fail _dir_open when readahead fails 2017-02-02 15:13:58 -08:00
xfs_da_format.c xfs: kill xfs_dir2_inou_t 2016-07-20 11:48:31 +10:00
xfs_da_format.h xfs: fix attr shortform structure alignment on cris 2016-08-03 10:59:42 +10:00
xfs_defer.c xfs: defer should abort intent items if the trans roll fails 2016-10-24 14:21:18 +11:00
xfs_defer.h xfs: implement deferred bmbt map/unmap operations 2016-10-04 11:05:44 -07:00
xfs_dir2.c xfs: fix xfs_mode_to_ftype() prototype 2017-01-18 12:39:21 -08:00
xfs_dir2.h xfs: fix xfs_mode_to_ftype() prototype 2017-01-18 12:39:21 -08:00
xfs_dir2_block.c xfs: print name of verifier if it fails 2016-01-04 16:10:19 +11:00
xfs_dir2_data.c Merge branch 'xfs-4.10-misc-fixes-3' into for-next 2016-12-07 17:42:30 +11:00
xfs_dir2_leaf.c xfs: print name of verifier if it fails 2016-01-04 16:10:19 +11:00
xfs_dir2_node.c xfs: verify free block header fields 2017-02-02 15:14:00 -08:00
xfs_dir2_priv.h xfs: rework the inline directory verifiers 2017-03-28 14:51:10 -07:00
xfs_dir2_sf.c xfs: rework the inline directory verifiers 2017-03-28 14:51:10 -07:00
xfs_dquot_buf.c xfs: simplify xfs_calc_dquots_per_chunk 2017-04-12 08:42:51 -07:00
xfs_format.h xfs: simplify validation of the unwritten extent bit 2017-04-25 09:40:41 -07:00
xfs_fs.h xfs: implement the GETFSMAP ioctl 2017-04-03 15:18:17 -07:00
xfs_ialloc.c xfs: Use xfs_icluster_size_fsb() to calculate inode chunk alignment 2017-02-16 17:20:38 -08:00
xfs_ialloc.h xfs: rename flist/free_list to dfops 2016-08-03 11:19:29 +10:00
xfs_ialloc_btree.c xfs: use per-AG reservations for the finobt 2017-01-25 07:49:35 -08:00
xfs_ialloc_btree.h xfs: use per-AG reservations for the finobt 2017-01-25 07:49:35 -08:00
xfs_inode_buf.c xfs: fix up inode validation failure message 2017-04-03 15:18:16 -07:00
xfs_inode_buf.h libxfs: convert ushort to unsigned short 2016-11-08 11:55:48 +11:00
xfs_inode_fork.c xfs: simplify validation of the unwritten extent bit 2017-04-25 09:40:41 -07:00
xfs_inode_fork.h xfs: rework the inline directory verifiers 2017-03-28 14:51:10 -07:00
xfs_log_format.h libxfs: convert ushort to unsigned short 2016-11-08 11:55:48 +11:00
xfs_log_recover.h xfs: remove unused struct declarations 2017-01-30 16:32:25 -08:00
xfs_log_rlimit.c xfs: move most of xfs_sb.h to xfs_format.h 2014-11-28 14:27:09 +11:00
xfs_quota_defs.h xfs: wire up Q_XGETNEXTQUOTA / get_nextdqblk 2016-02-08 11:27:38 +11:00
xfs_refcount.c xfs: rework refcount cow recovery error handling 2016-10-10 17:23:07 +11:00
xfs_refcount.h xfs: store in-progress CoW allocations in the refcount btree 2016-10-05 16:26:05 -07:00
xfs_refcount_btree.c xfs: use the actual AG length when reserving blocks 2017-01-03 18:39:33 -08:00
xfs_refcount_btree.h xfs: use the actual AG length when reserving blocks 2017-01-03 18:39:33 -08:00
xfs_rmap.c xfs: implement the GETFSMAP ioctl 2017-04-03 15:18:17 -07:00
xfs_rmap.h xfs: implement the GETFSMAP ioctl 2017-04-03 15:18:17 -07:00
xfs_rmap_btree.c xfs: use the actual AG length when reserving blocks 2017-01-03 18:39:33 -08:00
xfs_rmap_btree.h xfs: use the actual AG length when reserving blocks 2017-01-03 18:39:33 -08:00
xfs_rtbitmap.c xfs: add a couple of queries to iterate free extents in the rtbitmap 2017-04-03 15:18:17 -07:00
xfs_sb.c xfs: verify dirblocklog correctly 2017-01-24 12:23:33 -08:00
xfs_sb.h xfs: remove unused function definitions 2016-02-08 14:58:07 +11:00
xfs_shared.h xfs: define the on-disk refcount btree format 2016-10-03 09:11:18 -07:00
xfs_symlink_remote.c xfs: print name of verifier if it fails 2016-01-04 16:10:19 +11:00
xfs_trans_resv.c xfs: increase log reservations for reflink 2016-10-05 16:26:29 -07:00
xfs_trans_resv.h xfs: increase log reservations for reflink 2016-10-05 16:26:29 -07:00
xfs_trans_space.h xfs: implement swapext for rmap filesystems 2016-10-05 16:26:32 -07:00
xfs_types.h Merge branch 'xfs-4.10-extent-lookup' into for-next 2016-11-24 11:41:59 +11:00