diff options
Diffstat (limited to 'fs/xfs/libxfs/xfs_types.c')
-rw-r--r-- | fs/xfs/libxfs/xfs_types.c | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/fs/xfs/libxfs/xfs_types.c b/fs/xfs/libxfs/xfs_types.c index 7b310eb296b7..b254fbeaaa50 100644 --- a/fs/xfs/libxfs/xfs_types.c +++ b/fs/xfs/libxfs/xfs_types.c @@ -258,3 +258,28 @@ xfs_verify_dablk( return dabno <= max_dablk; } + +/* Check that a file block offset does not exceed the maximum. */ +bool +xfs_verify_fileoff( + struct xfs_mount *mp, + xfs_fileoff_t off) +{ + return off <= XFS_MAX_FILEOFF; +} + +/* Check that a range of file block offsets do not exceed the maximum. */ +bool +xfs_verify_fileext( + struct xfs_mount *mp, + xfs_fileoff_t off, + xfs_fileoff_t len) +{ + if (off + len <= off) + return false; + + if (!xfs_verify_fileoff(mp, off)) + return false; + + return xfs_verify_fileoff(mp, off + len - 1); +} |