diff options
| author | Darrick J. Wong <djwong@kernel.org> | 2024-04-22 19:47:26 +0300 |
|---|---|---|
| committer | Darrick J. Wong <djwong@kernel.org> | 2024-04-23 17:46:52 +0300 |
| commit | ad206ae50eca62836c5460ab5bbf2a6c59a268e7 (patch) | |
| tree | 32ea2e1f458bba4a55f133cc400a3bb1095da0c8 /fs/xfs/xfs_attr_item.c | |
| parent | f759784cb61ceb77604326cd53cc2da88d24842f (diff) | |
| download | linux-ad206ae50eca62836c5460ab5bbf2a6c59a268e7.tar.xz | |
xfs: check opcode and iovec count match in xlog_recover_attri_commit_pass2
Check that the number of recovered log iovecs is what is expected for
the xattri opcode is expecting.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Diffstat (limited to 'fs/xfs/xfs_attr_item.c')
| -rw-r--r-- | fs/xfs/xfs_attr_item.c | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/fs/xfs/xfs_attr_item.c b/fs/xfs/xfs_attr_item.c index e5e7ddbc594b..d3559e6b24b7 100644 --- a/fs/xfs/xfs_attr_item.c +++ b/fs/xfs/xfs_attr_item.c @@ -737,6 +737,7 @@ xlog_recover_attri_commit_pass2( const void *attr_value = NULL; const void *attr_name; size_t len; + unsigned int op; attri_formatp = item->ri_buf[0].i_addr; attr_name = item->ri_buf[1].i_addr; @@ -755,6 +756,32 @@ xlog_recover_attri_commit_pass2( return -EFSCORRUPTED; } + /* Check the number of log iovecs makes sense for the op code. */ + op = attri_formatp->alfi_op_flags & XFS_ATTRI_OP_FLAGS_TYPE_MASK; + switch (op) { + case XFS_ATTRI_OP_FLAGS_SET: + case XFS_ATTRI_OP_FLAGS_REPLACE: + /* Log item, attr name, attr value */ + if (item->ri_total != 3) { + XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, mp, + attri_formatp, len); + return -EFSCORRUPTED; + } + break; + case XFS_ATTRI_OP_FLAGS_REMOVE: + /* Log item, attr name */ + if (item->ri_total != 2) { + XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, mp, + attri_formatp, len); + return -EFSCORRUPTED; + } + break; + default: + XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, mp, + attri_formatp, len); + return -EFSCORRUPTED; + } + /* Validate the attr name */ if (item->ri_buf[1].i_len != xlog_calc_iovec_len(attri_formatp->alfi_name_len)) { |