From 5158217058fc2cdb92e05b9bb3c1a350d2a51ed9 Mon Sep 17 00:00:00 2001 From: Eric Sandeen Date: Thu, 27 Feb 2014 15:17:27 +1100 Subject: xfs: add helper for verifying checksums on xfs_bufs Many/most callers of xfs_verify_cksum() pass bp->b_addr and BBTOB(bp->b_length) as the first 2 args. Add a helper which can just accept the bp and the crc offset, and work it out on its own, for brevity. Signed-off-by: Eric Sandeen Reviewed-by: Dave Chinner Signed-off-by: Dave Chinner --- fs/xfs/xfs_dir2_node.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) (limited to 'fs/xfs/xfs_dir2_node.c') diff --git a/fs/xfs/xfs_dir2_node.c b/fs/xfs/xfs_dir2_node.c index 48c7d18f68c3..875e7c03c978 100644 --- a/fs/xfs/xfs_dir2_node.c +++ b/fs/xfs/xfs_dir2_node.c @@ -116,8 +116,7 @@ xfs_dir3_free_read_verify( struct xfs_mount *mp = bp->b_target->bt_mount; if ((xfs_sb_version_hascrc(&mp->m_sb) && - !xfs_verify_cksum(bp->b_addr, BBTOB(bp->b_length), - XFS_DIR3_FREE_CRC_OFF)) || + !xfs_buf_verify_cksum(bp, XFS_DIR3_FREE_CRC_OFF)) || !xfs_dir3_free_verify(bp)) { XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, mp, bp->b_addr); xfs_buf_ioerror(bp, EFSCORRUPTED); -- cgit v1.2.3 From f1dbcd7e38c80c2165516b4432231b46f1adc76c Mon Sep 17 00:00:00 2001 From: Eric Sandeen Date: Thu, 27 Feb 2014 15:18:23 +1100 Subject: xfs: add helper for updating checksums on xfs_bufs Many/most callers of xfs_update_cksum() pass bp->b_addr and BBTOB(bp->b_length) as the first 2 args. Add a helper which can just accept the bp and the crc offset, and work it out on its own, for brevity. Signed-off-by: Eric Sandeen Reviewed-by: Dave Chinner Signed-off-by: Dave Chinner --- fs/xfs/xfs_dir2_node.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'fs/xfs/xfs_dir2_node.c') diff --git a/fs/xfs/xfs_dir2_node.c b/fs/xfs/xfs_dir2_node.c index 875e7c03c978..0904b2027cd6 100644 --- a/fs/xfs/xfs_dir2_node.c +++ b/fs/xfs/xfs_dir2_node.c @@ -143,7 +143,7 @@ xfs_dir3_free_write_verify( if (bip) hdr3->lsn = cpu_to_be64(bip->bli_item.li_lsn); - xfs_update_cksum(bp->b_addr, BBTOB(bp->b_length), XFS_DIR3_FREE_CRC_OFF); + xfs_buf_update_cksum(bp, XFS_DIR3_FREE_CRC_OFF); } const struct xfs_buf_ops xfs_dir3_free_buf_ops = { -- cgit v1.2.3 From ce5028cfe3ca48695b6a128638fe224426d37ebe Mon Sep 17 00:00:00 2001 From: Eric Sandeen Date: Thu, 27 Feb 2014 15:23:10 +1100 Subject: xfs: modify verifiers to differentiate CRC from other errors Modify all read & write verifiers to differentiate between CRC errors and other inconsistencies. This sets the appropriate error number on bp->b_error, and then calls xfs_verifier_error() if something went wrong. That function will issue the appropriate message to the user. Signed-off-by: Eric Sandeen Reviewed-by: Brian Foster Signed-off-by: Dave Chinner --- fs/xfs/xfs_dir2_node.c | 14 ++++++++------ 1 file changed, 8 insertions(+), 6 deletions(-) (limited to 'fs/xfs/xfs_dir2_node.c') diff --git a/fs/xfs/xfs_dir2_node.c b/fs/xfs/xfs_dir2_node.c index 0904b2027cd6..cb434d732681 100644 --- a/fs/xfs/xfs_dir2_node.c +++ b/fs/xfs/xfs_dir2_node.c @@ -115,12 +115,14 @@ xfs_dir3_free_read_verify( { struct xfs_mount *mp = bp->b_target->bt_mount; - if ((xfs_sb_version_hascrc(&mp->m_sb) && - !xfs_buf_verify_cksum(bp, XFS_DIR3_FREE_CRC_OFF)) || - !xfs_dir3_free_verify(bp)) { - XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, mp, bp->b_addr); + if (xfs_sb_version_hascrc(&mp->m_sb) && + !xfs_buf_verify_cksum(bp, XFS_DIR3_FREE_CRC_OFF)) + xfs_buf_ioerror(bp, EFSBADCRC); + else if (!xfs_dir3_free_verify(bp)) xfs_buf_ioerror(bp, EFSCORRUPTED); - } + + if (bp->b_error) + xfs_verifier_error(bp); } static void @@ -132,8 +134,8 @@ xfs_dir3_free_write_verify( struct xfs_dir3_blk_hdr *hdr3 = bp->b_addr; if (!xfs_dir3_free_verify(bp)) { - XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, mp, bp->b_addr); xfs_buf_ioerror(bp, EFSCORRUPTED); + xfs_verifier_error(bp); return; } -- cgit v1.2.3