diff options
| author | Darrick J. Wong <darrick.wong@oracle.com> | 2020-08-17 09:59:07 -0700 |
|---|---|---|
| committer | Darrick J. Wong <darrick.wong@oracle.com> | 2020-09-15 20:52:41 -0700 |
| commit | f93e5436f0ee5a85eaa3a86d2614d215873fb18b (patch) | |
| tree | ce60a83ad06e42b199e2ebb14fa62e33be7f6955 /fs/xfs/xfs_ondisk.h | |
| parent | 30e05599219f3c15bd5f24190af0e33cdb4a00e5 (diff) | |
xfs: widen ondisk inode timestamps to deal with y2038+
Redesign the ondisk inode timestamps to be a simple unsigned 64-bit
counter of nanoseconds since 14 Dec 1901 (i.e. the minimum time in the
32-bit unix time epoch). This enables us to handle dates up to 2486,
which solves the y2038 problem.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Gao Xiang <hsiangkao@redhat.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Diffstat (limited to 'fs/xfs/xfs_ondisk.h')
| -rw-r--r-- | fs/xfs/xfs_ondisk.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/fs/xfs/xfs_ondisk.h b/fs/xfs/xfs_ondisk.h index cfa54d6b7c11..a9dbf21f13d8 100644 --- a/fs/xfs/xfs_ondisk.h +++ b/fs/xfs/xfs_ondisk.h @@ -15,6 +15,10 @@ "XFS: offsetof(" #structname ", " #member ") is wrong, " \ "expected " #off) +#define XFS_CHECK_VALUE(value, expected) \ + BUILD_BUG_ON_MSG((value) != (expected), \ + "XFS: value of " #value " is wrong, expected " #expected) + static inline void __init xfs_check_ondisk_structs(void) { @@ -154,6 +158,15 @@ xfs_check_ondisk_structs(void) XFS_CHECK_STRUCT_SIZE(struct xfs_inumbers, 24); XFS_CHECK_STRUCT_SIZE(struct xfs_bulkstat_req, 64); XFS_CHECK_STRUCT_SIZE(struct xfs_inumbers_req, 64); + + /* + * Make sure the incore inode timestamp range corresponds to hand + * converted values based on the ondisk format specification. + */ + XFS_CHECK_VALUE(XFS_BIGTIME_TIME_MIN - XFS_BIGTIME_EPOCH_OFFSET, + XFS_LEGACY_TIME_MIN); + XFS_CHECK_VALUE(XFS_BIGTIME_TIME_MAX - XFS_BIGTIME_EPOCH_OFFSET, + 16299260424LL); } #endif /* __XFS_ONDISK_H */ |