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| author | Darrick J. Wong <darrick.wong@oracle.com> | 2018-01-08 10:51:04 -0800 |
|---|---|---|
| committer | Darrick J. Wong <darrick.wong@oracle.com> | 2018-01-08 10:54:46 -0800 |
| commit | 50aa90ef03007beca2c9108993f5b4f2bb4f0a66 (patch) | |
| tree | fdf2091a028ec23c36b2e8f5c74393199e637448 /fs/xfs | |
| parent | bc1a09b8e334bf5fca1d6727aec538dcff957961 (diff) | |
| download | linux-stable-50aa90ef03007beca2c9108993f5b4f2bb4f0a66.tar.gz linux-stable-50aa90ef03007beca2c9108993f5b4f2bb4f0a66.tar.bz2 linux-stable-50aa90ef03007beca2c9108993f5b4f2bb4f0a66.zip | |
xfs: verify dinode header first
Move the v3 inode integrity information (crc, owner, metauuid) before we
look at anything else in the inode so that we don't waste time on a torn
write or a totally garbled block. This makes xfs_dinode_verify more
consistent with the other verifiers.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Diffstat (limited to 'fs/xfs')
| -rw-r--r-- | fs/xfs/libxfs/xfs_inode_buf.c | 23 |
1 files changed, 13 insertions, 10 deletions
diff --git a/fs/xfs/libxfs/xfs_inode_buf.c b/fs/xfs/libxfs/xfs_inode_buf.c index a43a3702af93..a1ba112567b0 100644 --- a/fs/xfs/libxfs/xfs_inode_buf.c +++ b/fs/xfs/libxfs/xfs_inode_buf.c @@ -393,6 +393,19 @@ xfs_dinode_verify( if (dip->di_magic != cpu_to_be16(XFS_DINODE_MAGIC)) return __this_address; + /* Verify v3 integrity information first */ + if (dip->di_version >= 3) { + if (!xfs_sb_version_hascrc(&mp->m_sb)) + return __this_address; + if (!xfs_verify_cksum((char *)dip, mp->m_sb.sb_inodesize, + XFS_DINODE_CRC_OFF)) + return __this_address; + if (be64_to_cpu(dip->di_ino) != ino) + return __this_address; + if (!uuid_equal(&dip->di_uuid, &mp->m_sb.sb_meta_uuid)) + return __this_address; + } + /* don't allow invalid i_size */ if (be64_to_cpu(dip->di_size) & (1ULL << 63)) return __this_address; @@ -409,16 +422,6 @@ xfs_dinode_verify( if (dip->di_version < 3) return NULL; - if (!xfs_sb_version_hascrc(&mp->m_sb)) - return __this_address; - if (!xfs_verify_cksum((char *)dip, mp->m_sb.sb_inodesize, - XFS_DINODE_CRC_OFF)) - return __this_address; - if (be64_to_cpu(dip->di_ino) != ino) - return __this_address; - if (!uuid_equal(&dip->di_uuid, &mp->m_sb.sb_meta_uuid)) - return __this_address; - flags = be16_to_cpu(dip->di_flags); flags2 = be64_to_cpu(dip->di_flags2); |