diff options
author | Darrick J. Wong <darrick.wong@oracle.com> | 2018-02-26 22:43:17 -0600 |
---|---|---|
committer | Eric Sandeen <sandeen@redhat.com> | 2018-02-26 22:43:17 -0600 |
commit | 1f98251ffd56f2d78fff582568e984dec952d89c (patch) | |
tree | 80a2f611826575a01725767655487ef29c88d620 | |
parent | 6db3a8007a2493d6887cf45a5edfaa6a770b8492 (diff) | |
download | xfsprogs-dev-1f98251ffd56f2d78fff582568e984dec952d89c.tar.gz |
xfs: refactor short form directory structure verifier function
Source kernel commit: dc042c2d8ff629dd411e9a60bce9c379e2f8aaf8
Change the short form directory structure verifier function to return
the instruction pointer of a failing check or NULL if everything's ok.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Eric Sandeen <sandeen@sandeen.net>
-rw-r--r-- | libxfs/xfs_dir2_priv.h | 2 | ||||
-rw-r--r-- | libxfs/xfs_dir2_sf.c | 26 | ||||
-rw-r--r-- | libxfs/xfs_inode_fork.c | 5 |
3 files changed, 16 insertions, 17 deletions
diff --git a/libxfs/xfs_dir2_priv.h b/libxfs/xfs_dir2_priv.h index a15ad7cd80..753aeeeffc 100644 --- a/libxfs/xfs_dir2_priv.h +++ b/libxfs/xfs_dir2_priv.h @@ -129,7 +129,7 @@ extern int xfs_dir2_sf_create(struct xfs_da_args *args, xfs_ino_t pino); extern int xfs_dir2_sf_lookup(struct xfs_da_args *args); extern int xfs_dir2_sf_removename(struct xfs_da_args *args); extern int xfs_dir2_sf_replace(struct xfs_da_args *args); -extern int xfs_dir2_sf_verify(struct xfs_inode *ip); +extern xfs_failaddr_t xfs_dir2_sf_verify(struct xfs_inode *ip); /* xfs_dir2_readdir.c */ extern int xfs_readdir(struct xfs_trans *tp, struct xfs_inode *dp, diff --git a/libxfs/xfs_dir2_sf.c b/libxfs/xfs_dir2_sf.c index 0c45398871..cf352b6c6e 100644 --- a/libxfs/xfs_dir2_sf.c +++ b/libxfs/xfs_dir2_sf.c @@ -628,7 +628,7 @@ xfs_dir2_sf_check( #endif /* DEBUG */ /* Verify the consistency of an inline directory. */ -int +xfs_failaddr_t xfs_dir2_sf_verify( struct xfs_inode *ip) { @@ -663,7 +663,7 @@ xfs_dir2_sf_verify( */ if (size <= offsetof(struct xfs_dir2_sf_hdr, parent) || size < xfs_dir2_sf_hdr_size(sfp->i8count)) - return -EFSCORRUPTED; + return __this_address; endp = (char *)sfp + size; @@ -672,7 +672,7 @@ xfs_dir2_sf_verify( i8count = ino > XFS_DIR2_MAX_SHORT_INUM; error = xfs_dir_ino_validate(mp, ino); if (error) - return error; + return __this_address; offset = dops->data_first_offset; /* Check all reported entries */ @@ -684,11 +684,11 @@ xfs_dir2_sf_verify( * within the data buffer. */ if (((char *)sfep + sizeof(*sfep)) >= endp) - return -EFSCORRUPTED; + return __this_address; /* Don't allow names with known bad length. */ if (sfep->namelen == 0) - return -EFSCORRUPTED; + return __this_address; /* * Check that the variable-length part of the structure is @@ -697,23 +697,23 @@ xfs_dir2_sf_verify( */ next_sfep = dops->sf_nextentry(sfp, sfep); if (endp < (char *)next_sfep) - return -EFSCORRUPTED; + return __this_address; /* Check that the offsets always increase. */ if (xfs_dir2_sf_get_offset(sfep) < offset) - return -EFSCORRUPTED; + return __this_address; /* Check the inode number. */ ino = dops->sf_get_ino(sfp, sfep); i8count += ino > XFS_DIR2_MAX_SHORT_INUM; error = xfs_dir_ino_validate(mp, ino); if (error) - return error; + return __this_address; /* Check the file type. */ filetype = dops->sf_get_ftype(sfep); if (filetype >= XFS_DIR3_FT_MAX) - return -EFSCORRUPTED; + return __this_address; offset = xfs_dir2_sf_get_offset(sfep) + dops->data_entsize(sfep->namelen); @@ -721,16 +721,16 @@ xfs_dir2_sf_verify( sfep = next_sfep; } if (i8count != sfp->i8count) - return -EFSCORRUPTED; + return __this_address; if ((void *)sfep != (void *)endp) - return -EFSCORRUPTED; + return __this_address; /* Make sure this whole thing ought to be in local format. */ if (offset + (sfp->count + 2) * (uint)sizeof(xfs_dir2_leaf_entry_t) + (uint)sizeof(xfs_dir2_block_tail_t) > mp->m_dir_geo->blksize) - return -EFSCORRUPTED; + return __this_address; - return 0; + return NULL; } /* diff --git a/libxfs/xfs_inode_fork.c b/libxfs/xfs_inode_fork.c index 489f77f727..ded3f83c0f 100644 --- a/libxfs/xfs_inode_fork.c +++ b/libxfs/xfs_inode_fork.c @@ -96,10 +96,9 @@ xfs_iformat_fork( /* Check inline dir contents. */ if (S_ISDIR(inode->i_mode) && dip->di_format == XFS_DINODE_FMT_LOCAL) { - error = xfs_dir2_sf_verify(ip); - if (error) { + if (xfs_dir2_sf_verify(ip)) { xfs_idestroy_fork(ip, XFS_DATA_FORK); - return error; + return -EFSCORRUPTED; } } |