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| author | Darrick J. Wong <darrick.wong@oracle.com> | 2017-01-09 15:38:37 (GMT) |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-01-12 10:39:40 (GMT) |
| commit | 63fa793e757dfc08c09865d68936ce3d67a00047 (patch) | |
| tree | b672e75b7977ef25f4d2e3df50a5eda5536d5b8b | |
| parent | f380ee72a7a498c934afe3aa67a50242b935f540 (diff) | |
| download | linux-63fa793e757dfc08c09865d68936ce3d67a00047.tar.xz | |
xfs: check minimum block size for CRC filesystems
commit bec9d48d7a303a5bb95c05961ff07ec7eeb59058 upstream.
Check the minimum block size on v5 filesystems.
[dchinner: cleaned up XFS_MIN_CRC_BLOCKSIZE check]
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
Cc: Christoph Hellwig <hch@lst.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | fs/xfs/libxfs/xfs_sb.c | 6 | ||||
| -rw-r--r-- | fs/xfs/libxfs/xfs_types.h | 3 |
2 files changed, 9 insertions, 0 deletions
diff --git a/fs/xfs/libxfs/xfs_sb.c b/fs/xfs/libxfs/xfs_sb.c index 7a39240..2580262 100644 --- a/fs/xfs/libxfs/xfs_sb.c +++ b/fs/xfs/libxfs/xfs_sb.c @@ -262,6 +262,12 @@ xfs_mount_validate_sb( return -EFSCORRUPTED; } + if (xfs_sb_version_hascrc(&mp->m_sb) && + sbp->sb_blocksize < XFS_MIN_CRC_BLOCKSIZE) { + xfs_notice(mp, "v5 SB sanity check failed"); + return -EFSCORRUPTED; + } + /* * Until this is fixed only page-sized or smaller data blocks work. */ diff --git a/fs/xfs/libxfs/xfs_types.h b/fs/xfs/libxfs/xfs_types.h index 8d74870..cf044c0 100644 --- a/fs/xfs/libxfs/xfs_types.h +++ b/fs/xfs/libxfs/xfs_types.h @@ -75,11 +75,14 @@ typedef __int64_t xfs_sfiloff_t; /* signed block number in a file */ * Minimum and maximum blocksize and sectorsize. * The blocksize upper limit is pretty much arbitrary. * The sectorsize upper limit is due to sizeof(sb_sectsize). + * CRC enable filesystems use 512 byte inodes, meaning 512 byte block sizes + * cannot be used. */ #define XFS_MIN_BLOCKSIZE_LOG 9 /* i.e. 512 bytes */ #define XFS_MAX_BLOCKSIZE_LOG 16 /* i.e. 65536 bytes */ #define XFS_MIN_BLOCKSIZE (1 << XFS_MIN_BLOCKSIZE_LOG) #define XFS_MAX_BLOCKSIZE (1 << XFS_MAX_BLOCKSIZE_LOG) +#define XFS_MIN_CRC_BLOCKSIZE (1 << (XFS_MIN_BLOCKSIZE_LOG + 1)) #define XFS_MIN_SECTORSIZE_LOG 9 /* i.e. 512 bytes */ #define XFS_MAX_SECTORSIZE_LOG 15 /* i.e. 32768 bytes */ #define XFS_MIN_SECTORSIZE (1 << XFS_MIN_SECTORSIZE_LOG) |