libxfs: v3 inodes are only valid on crc-enabled filesystems
xfs_repair was not detecting that version 3 inodes are invalid for for non-CRC filesystems. The result is specific inode corruptions go undetected and hence aren't repaired if only the version number is out of range. The core of the problem is that the XFS_DINODE_GOOD_VERSION() macro doesn't know that valid inode versions are dependent on a superblock version number. Fix this in libxfs, and propagate the new function out into the rest of xfsprogs to fix the issue. [Darrick: port to kernel from xfsprogs] Reported-by: Leslie Rhorer <lrhorer@mygrande.net> Signed-off-by: Roger Willcocks <roger@filmlight.ltd.uk> Reviewed-by: Dave Chinner <dchinner@redhat.com> Signed-off-by: Dave Chinner <david@fromorbit.com>
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@ -865,7 +865,6 @@ typedef struct xfs_timestamp {
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* padding field for v3 inodes.
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*/
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#define XFS_DINODE_MAGIC 0x494e /* 'IN' */
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#define XFS_DINODE_GOOD_VERSION(v) ((v) >= 1 && (v) <= 3)
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typedef struct xfs_dinode {
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__be16 di_magic; /* inode magic # = XFS_DINODE_MAGIC */
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__be16 di_mode; /* mode and type of file */
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@ -57,6 +57,17 @@ xfs_inobp_check(
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}
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#endif
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bool
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xfs_dinode_good_version(
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struct xfs_mount *mp,
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__u8 version)
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{
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if (xfs_sb_version_hascrc(&mp->m_sb))
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return version == 3;
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return version == 1 || version == 2;
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}
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/*
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* If we are doing readahead on an inode buffer, we might be in log recovery
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* reading an inode allocation buffer that hasn't yet been replayed, and hence
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@ -91,7 +102,7 @@ xfs_inode_buf_verify(
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dip = xfs_buf_offset(bp, (i << mp->m_sb.sb_inodelog));
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di_ok = dip->di_magic == cpu_to_be16(XFS_DINODE_MAGIC) &&
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XFS_DINODE_GOOD_VERSION(dip->di_version);
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xfs_dinode_good_version(mp, dip->di_version);
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if (unlikely(XFS_TEST_ERROR(!di_ok, mp,
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XFS_ERRTAG_ITOBP_INOTOBP,
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XFS_RANDOM_ITOBP_INOTOBP))) {
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@ -74,6 +74,8 @@ void xfs_inode_from_disk(struct xfs_inode *ip, struct xfs_dinode *from);
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void xfs_log_dinode_to_disk(struct xfs_log_dinode *from,
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struct xfs_dinode *to);
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bool xfs_dinode_good_version(struct xfs_mount *mp, __u8 version);
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#if defined(DEBUG)
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void xfs_inobp_check(struct xfs_mount *, struct xfs_buf *);
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#else
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