diff options
| author | Christoph Hellwig <hch@lst.de> | 2013-04-03 16:11:14 +1100 |
|---|---|---|
| committer | Ben Myers <bpm@sgi.com> | 2013-04-21 14:55:34 -0500 |
| commit | 77c95bba013089fa868217283eb6d98a05913e53 (patch) | |
| tree | 7b694c2baa200ac1bf2770d7bdfa4f2a292a2a58 /fs/xfs/xfs_log_recover.c | |
| parent | 4e0e6040c4052aff15a494ac05778f4086d24c33 (diff) | |
xfs: add CRC checks to the AGFL
Add CRC checks, location information and a magic number to the AGFL.
Previously the AGFL was just a block containing nothing but the
free block pointers. The new AGFL has a real header with the usual
boilerplate instead, so that we can verify it's not corrupted and
written into the right place.
[dchinner@redhat.com] Added LSN field, reworked significantly to fit
into new verifier structure and growfs structure, enabled full
verifier functionality now there is a header to verify and we can
guarantee an initialised AGFL.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Ben Myers <bpm@sgi.com>
Signed-off-by: Ben Myers <bpm@sgi.com>
Diffstat (limited to 'fs/xfs/xfs_log_recover.c')
| -rw-r--r-- | fs/xfs/xfs_log_recover.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/fs/xfs/xfs_log_recover.c b/fs/xfs/xfs_log_recover.c index dadf24566d1..da2a19e0554 100644 --- a/fs/xfs/xfs_log_recover.c +++ b/fs/xfs/xfs_log_recover.c @@ -1961,6 +1961,16 @@ xlog_recover_do_reg_buffer( } bp->b_ops = &xfs_agf_buf_ops; break; + case XFS_BLF_AGFL_BUF: + if (!xfs_sb_version_hascrc(&mp->m_sb)) + break; + if (*(__be32 *)bp->b_addr != cpu_to_be32(XFS_AGFL_MAGIC)) { + xfs_warn(mp, "Bad AGFL block magic!"); + ASSERT(0); + break; + } + bp->b_ops = &xfs_agfl_buf_ops; + break; default: break; } |