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authorChristoph Hellwig <hch@infradead.org>2008-10-30 09:14:43 +0300
committerLachlan McIlroy <lachlan@sgi.com>2008-10-30 09:14:43 +0300
commit4e8938feba770b583fb13d249c17943961731a3e (patch)
tree311411b8561b8c9222996ab72ddcb4303be3d096 /fs/xfs/xfs_bmap.c
parent7cc95a821df8f09a5d37a923cf8c3a7c3ee00c29 (diff)
downloadlinux-4e8938feba770b583fb13d249c17943961731a3e.tar.xz
[XFS] Move XFS_BMAP_SANITY_CHECK out of line.
Move the XFS_BMAP_SANITY_CHECK macro out of line and make it a properly typed function. Also pass the xfs_buf for the btree block instead of just the btree block header, as we will need some additional information for it to implement CRC checking of btree blocks. SGI-PV: 988146 SGI-Modid: xfs-linux-melb:xfs-kern:32301a Signed-off-by: Christoph Hellwig <hch@infradead.org> Signed-off-by: Donald Douwsma <donaldd@sgi.com> Signed-off-by: David Chinner <david@fromorbit.com> Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Diffstat (limited to 'fs/xfs/xfs_bmap.c')
-rw-r--r--fs/xfs/xfs_bmap.c22
1 files changed, 19 insertions, 3 deletions
diff --git a/fs/xfs/xfs_bmap.c b/fs/xfs/xfs_bmap.c
index 7796a0c140eb..db289050692f 100644
--- a/fs/xfs/xfs_bmap.c
+++ b/fs/xfs/xfs_bmap.c
@@ -4524,6 +4524,22 @@ xfs_bmap_one_block(
return rval;
}
+STATIC int
+xfs_bmap_sanity_check(
+ struct xfs_mount *mp,
+ struct xfs_buf *bp,
+ int level)
+{
+ struct xfs_btree_block *block = XFS_BUF_TO_BLOCK(bp);
+
+ if (be32_to_cpu(block->bb_magic) != XFS_BMAP_MAGIC ||
+ be16_to_cpu(block->bb_level) != level ||
+ be16_to_cpu(block->bb_numrecs) == 0 ||
+ be16_to_cpu(block->bb_numrecs) > mp->m_bmap_dmxr[level != 0])
+ return 0;
+ return 1;
+}
+
/*
* Read in the extents to if_extents.
* All inode fields are set up by caller, we just traverse the btree
@@ -4575,7 +4591,7 @@ xfs_bmap_read_extents(
return error;
block = XFS_BUF_TO_BLOCK(bp);
XFS_WANT_CORRUPTED_GOTO(
- XFS_BMAP_SANITY_CHECK(mp, block, level),
+ xfs_bmap_sanity_check(mp, bp, level),
error0);
if (level == 0)
break;
@@ -4611,7 +4627,7 @@ xfs_bmap_read_extents(
goto error0;
}
XFS_WANT_CORRUPTED_GOTO(
- XFS_BMAP_SANITY_CHECK(mp, block, 0),
+ xfs_bmap_sanity_check(mp, bp, 0),
error0);
/*
* Read-ahead the next leaf block, if any.
@@ -6287,7 +6303,7 @@ xfs_bmap_check_leaf_extents(
goto error_norelse;
block = XFS_BUF_TO_BLOCK(bp);
XFS_WANT_CORRUPTED_GOTO(
- XFS_BMAP_SANITY_CHECK(mp, block, level),
+ xfs_bmap_sanity_check(mp, bp, level),
error0);
if (level == 0)
break;