From 5158217058fc2cdb92e05b9bb3c1a350d2a51ed9 Mon Sep 17 00:00:00 2001 From: Eric Sandeen Date: Thu, 27 Feb 2014 15:17:27 +1100 Subject: [PATCH] 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_alloc.c | 6 ++---- fs/xfs/xfs_attr_leaf.c | 3 +-- fs/xfs/xfs_btree.c | 8 ++++---- fs/xfs/xfs_buf.h | 7 +++++++ fs/xfs/xfs_da_btree.c | 3 +-- fs/xfs/xfs_dir2_block.c | 3 +-- fs/xfs/xfs_dir2_data.c | 3 +-- fs/xfs/xfs_dir2_leaf.c | 3 +-- fs/xfs/xfs_dir2_node.c | 3 +-- fs/xfs/xfs_ialloc.c | 4 ++-- fs/xfs/xfs_linux.h | 1 + fs/xfs/xfs_sb.c | 3 +-- fs/xfs/xfs_symlink_remote.c | 3 +-- 13 files changed, 24 insertions(+), 26 deletions(-) diff --git a/fs/xfs/xfs_alloc.c b/fs/xfs/xfs_alloc.c index 72ea85512eb6..5050c9a2fbb0 100644 --- a/fs/xfs/xfs_alloc.c +++ b/fs/xfs/xfs_alloc.c @@ -485,8 +485,7 @@ xfs_agfl_read_verify( if (!xfs_sb_version_hascrc(&mp->m_sb)) return; - agfl_ok = xfs_verify_cksum(bp->b_addr, BBTOB(bp->b_length), - XFS_AGFL_CRC_OFF); + agfl_ok = xfs_buf_verify_cksum(bp, XFS_AGFL_CRC_OFF); agfl_ok = agfl_ok && xfs_agfl_verify(bp); @@ -2240,8 +2239,7 @@ xfs_agf_read_verify( int agf_ok = 1; if (xfs_sb_version_hascrc(&mp->m_sb)) - agf_ok = xfs_verify_cksum(bp->b_addr, BBTOB(bp->b_length), - XFS_AGF_CRC_OFF); + agf_ok = xfs_buf_verify_cksum(bp, XFS_AGF_CRC_OFF); agf_ok = agf_ok && xfs_agf_verify(mp, bp); diff --git a/fs/xfs/xfs_attr_leaf.c b/fs/xfs/xfs_attr_leaf.c index 7b126f46a2f9..a19a0234c82a 100644 --- a/fs/xfs/xfs_attr_leaf.c +++ b/fs/xfs/xfs_attr_leaf.c @@ -240,8 +240,7 @@ xfs_attr3_leaf_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_ATTR3_LEAF_CRC_OFF)) || + !xfs_buf_verify_cksum(bp, XFS_ATTR3_LEAF_CRC_OFF)) || !xfs_attr3_leaf_verify(bp)) { XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, mp, bp->b_addr); xfs_buf_ioerror(bp, EFSCORRUPTED); diff --git a/fs/xfs/xfs_btree.c b/fs/xfs/xfs_btree.c index 9adaae4f3e2f..4e8524d7741b 100644 --- a/fs/xfs/xfs_btree.c +++ b/fs/xfs/xfs_btree.c @@ -243,8 +243,8 @@ xfs_btree_lblock_verify_crc( struct xfs_buf *bp) { if (xfs_sb_version_hascrc(&bp->b_target->bt_mount->m_sb)) - return xfs_verify_cksum(bp->b_addr, BBTOB(bp->b_length), - XFS_BTREE_LBLOCK_CRC_OFF); + return xfs_buf_verify_cksum(bp, XFS_BTREE_LBLOCK_CRC_OFF); + return true; } @@ -276,8 +276,8 @@ xfs_btree_sblock_verify_crc( struct xfs_buf *bp) { if (xfs_sb_version_hascrc(&bp->b_target->bt_mount->m_sb)) - return xfs_verify_cksum(bp->b_addr, BBTOB(bp->b_length), - XFS_BTREE_SBLOCK_CRC_OFF); + return xfs_buf_verify_cksum(bp, XFS_BTREE_SBLOCK_CRC_OFF); + return true; } diff --git a/fs/xfs/xfs_buf.h b/fs/xfs/xfs_buf.h index 995339534db6..5edcfbaddb26 100644 --- a/fs/xfs/xfs_buf.h +++ b/fs/xfs/xfs_buf.h @@ -369,6 +369,13 @@ static inline void xfs_buf_relse(xfs_buf_t *bp) xfs_buf_rele(bp); } +static inline int +xfs_buf_verify_cksum(struct xfs_buf *bp, unsigned long cksum_offset) +{ + return xfs_verify_cksum(bp->b_addr, BBTOB(bp->b_length), + cksum_offset); +} + /* * Handling of buftargs. */ diff --git a/fs/xfs/xfs_da_btree.c b/fs/xfs/xfs_da_btree.c index 796272a2e129..6cece557c3c4 100644 --- a/fs/xfs/xfs_da_btree.c +++ b/fs/xfs/xfs_da_btree.c @@ -214,8 +214,7 @@ xfs_da3_node_read_verify( switch (be16_to_cpu(info->magic)) { case XFS_DA3_NODE_MAGIC: - if (!xfs_verify_cksum(bp->b_addr, BBTOB(bp->b_length), - XFS_DA3_NODE_CRC_OFF)) + if (!xfs_buf_verify_cksum(bp, XFS_DA3_NODE_CRC_OFF)) break; /* fall through */ case XFS_DA_NODE_MAGIC: diff --git a/fs/xfs/xfs_dir2_block.c b/fs/xfs/xfs_dir2_block.c index 90cdbf4b5f19..948dc391d42e 100644 --- a/fs/xfs/xfs_dir2_block.c +++ b/fs/xfs/xfs_dir2_block.c @@ -90,8 +90,7 @@ xfs_dir3_block_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_DATA_CRC_OFF)) || + !xfs_buf_verify_cksum(bp, XFS_DIR3_DATA_CRC_OFF)) || !xfs_dir3_block_verify(bp)) { XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, mp, bp->b_addr); xfs_buf_ioerror(bp, EFSCORRUPTED); diff --git a/fs/xfs/xfs_dir2_data.c b/fs/xfs/xfs_dir2_data.c index 70acff4ee173..1952f00286ea 100644 --- a/fs/xfs/xfs_dir2_data.c +++ b/fs/xfs/xfs_dir2_data.c @@ -268,8 +268,7 @@ xfs_dir3_data_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_DATA_CRC_OFF)) || + !xfs_buf_verify_cksum(bp, XFS_DIR3_DATA_CRC_OFF)) || !xfs_dir3_data_verify(bp)) { XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, mp, bp->b_addr); xfs_buf_ioerror(bp, EFSCORRUPTED); diff --git a/fs/xfs/xfs_dir2_leaf.c b/fs/xfs/xfs_dir2_leaf.c index ae47ec6e16c4..1a412eb0e4de 100644 --- a/fs/xfs/xfs_dir2_leaf.c +++ b/fs/xfs/xfs_dir2_leaf.c @@ -180,8 +180,7 @@ __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_LEAF_CRC_OFF)) || + !xfs_buf_verify_cksum(bp, XFS_DIR3_LEAF_CRC_OFF)) || !xfs_dir3_leaf_verify(bp, magic)) { XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, mp, bp->b_addr); xfs_buf_ioerror(bp, EFSCORRUPTED); 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); diff --git a/fs/xfs/xfs_ialloc.c b/fs/xfs/xfs_ialloc.c index d79210b15bc0..d6a879d879ca 100644 --- a/fs/xfs/xfs_ialloc.c +++ b/fs/xfs/xfs_ialloc.c @@ -1571,8 +1571,8 @@ xfs_agi_read_verify( int agi_ok = 1; if (xfs_sb_version_hascrc(&mp->m_sb)) - agi_ok = xfs_verify_cksum(bp->b_addr, BBTOB(bp->b_length), - XFS_AGI_CRC_OFF); + agi_ok = xfs_buf_verify_cksum(bp, XFS_AGI_CRC_OFF); + agi_ok = agi_ok && xfs_agi_verify(bp); if (unlikely(XFS_TEST_ERROR(!agi_ok, mp, XFS_ERRTAG_IALLOC_READ_AGI, diff --git a/fs/xfs/xfs_linux.h b/fs/xfs/xfs_linux.h index f9bb590acc0e..e8fed74dd669 100644 --- a/fs/xfs/xfs_linux.h +++ b/fs/xfs/xfs_linux.h @@ -119,6 +119,7 @@ typedef __uint64_t __psunsigned_t; #include "xfs_iops.h" #include "xfs_aops.h" #include "xfs_super.h" +#include "xfs_cksum.h" #include "xfs_buf.h" #include "xfs_message.h" diff --git a/fs/xfs/xfs_sb.c b/fs/xfs/xfs_sb.c index 1ea7c865b208..36f287fa9e26 100644 --- a/fs/xfs/xfs_sb.c +++ b/fs/xfs/xfs_sb.c @@ -610,8 +610,7 @@ xfs_sb_read_verify( XFS_SB_VERSION_5) || dsb->sb_crc != 0)) { - if (!xfs_verify_cksum(bp->b_addr, BBTOB(bp->b_length), - XFS_SB_CRC_OFF)) { + if (!xfs_buf_verify_cksum(bp, XFS_SB_CRC_OFF)) { /* Only fail bad secondaries on a known V5 filesystem */ if (bp->b_bn == XFS_SB_DADDR || xfs_sb_version_hascrc(&mp->m_sb)) { diff --git a/fs/xfs/xfs_symlink_remote.c b/fs/xfs/xfs_symlink_remote.c index 7a705a451ebc..b17295515b18 100644 --- a/fs/xfs/xfs_symlink_remote.c +++ b/fs/xfs/xfs_symlink_remote.c @@ -133,8 +133,7 @@ xfs_symlink_read_verify( if (!xfs_sb_version_hascrc(&mp->m_sb)) return; - if (!xfs_verify_cksum(bp->b_addr, BBTOB(bp->b_length), - XFS_SYMLINK_CRC_OFF) || + if (!xfs_buf_verify_cksum(bp, XFS_SYMLINK_CRC_OFF) || !xfs_symlink_verify(bp)) { XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, mp, bp->b_addr); xfs_buf_ioerror(bp, EFSCORRUPTED);