STATIC xfs_dir2_data_free_t *
xfs_dir2_data_freefind(xfs_dir2_data_hdr_t *hdr, xfs_dir2_data_unused_t *dup);
-#ifdef DEBUG
/*
* Check the consistency of the data block.
* The input can also be a block-format directory.
- * Pop an assert if we find anything bad.
+ * Return 0 is the buffer is good, otherwise an error.
*/
-void
-xfs_dir2_data_check(
+int
+__xfs_dir2_data_check(
struct xfs_inode *dp, /* incore inode pointer */
struct xfs_buf *bp) /* data block's buffer */
{
int stale; /* count of stale leaves */
struct xfs_name name;
- mp = dp->i_mount;
+ mp = bp->b_target->bt_mount;
hdr = bp->b_addr;
bf = hdr->bestfree;
p = (char *)(hdr + 1);
- if (hdr->magic == cpu_to_be32(XFS_DIR2_BLOCK_MAGIC)) {
+ switch (hdr->magic) {
+ case cpu_to_be32(XFS_DIR2_BLOCK_MAGIC):
btp = xfs_dir2_block_tail_p(mp, hdr);
lep = xfs_dir2_block_leaf_p(btp);
endp = (char *)lep;
- } else {
- ASSERT(hdr->magic == cpu_to_be32(XFS_DIR2_DATA_MAGIC));
+ break;
+ case cpu_to_be32(XFS_DIR2_DATA_MAGIC):
endp = (char *)hdr + mp->m_dirblksize;
+ break;
+ default:
+ XFS_ERROR_REPORT("Bad Magic", XFS_ERRLEVEL_LOW, mp);
+ return EFSCORRUPTED;
}
count = lastfree = freeseen = 0;
* Account for zero bestfree entries.
*/
if (!bf[0].length) {
- ASSERT(!bf[0].offset);
+ XFS_WANT_CORRUPTED_RETURN(!bf[0].offset);
freeseen |= 1 << 0;
}
if (!bf[1].length) {
- ASSERT(!bf[1].offset);
+ XFS_WANT_CORRUPTED_RETURN(!bf[1].offset);
freeseen |= 1 << 1;
}
if (!bf[2].length) {
- ASSERT(!bf[2].offset);
+ XFS_WANT_CORRUPTED_RETURN(!bf[2].offset);
freeseen |= 1 << 2;
}
- ASSERT(be16_to_cpu(bf[0].length) >= be16_to_cpu(bf[1].length));
- ASSERT(be16_to_cpu(bf[1].length) >= be16_to_cpu(bf[2].length));
+
+ XFS_WANT_CORRUPTED_RETURN(be16_to_cpu(bf[0].length) >=
+ be16_to_cpu(bf[1].length));
+ XFS_WANT_CORRUPTED_RETURN(be16_to_cpu(bf[1].length) >=
+ be16_to_cpu(bf[2].length));
/*
* Loop over the data/unused entries.
*/
* doesn't need to be there.
*/
if (be16_to_cpu(dup->freetag) == XFS_DIR2_DATA_FREE_TAG) {
- ASSERT(lastfree == 0);
- ASSERT(be16_to_cpu(*xfs_dir2_data_unused_tag_p(dup)) ==
- (char *)dup - (char *)hdr);
+ XFS_WANT_CORRUPTED_RETURN(lastfree == 0);
+ XFS_WANT_CORRUPTED_RETURN(
+ be16_to_cpu(*xfs_dir2_data_unused_tag_p(dup)) ==
+ (char *)dup - (char *)hdr);
dfp = xfs_dir2_data_freefind(hdr, dup);
if (dfp) {
i = (int)(dfp - bf);
- ASSERT((freeseen & (1 << i)) == 0);
+ XFS_WANT_CORRUPTED_RETURN(
+ (freeseen & (1 << i)) == 0);
freeseen |= 1 << i;
} else {
- ASSERT(be16_to_cpu(dup->length) <=
- be16_to_cpu(bf[2].length));
+ XFS_WANT_CORRUPTED_RETURN(
+ be16_to_cpu(dup->length) <=
+ be16_to_cpu(bf[2].length));
}
p += be16_to_cpu(dup->length);
lastfree = 1;
* The linear search is crude but this is DEBUG code.
*/
dep = (xfs_dir2_data_entry_t *)p;
- ASSERT(dep->namelen != 0);
- ASSERT(xfs_dir_ino_validate(mp, be64_to_cpu(dep->inumber)) == 0);
- ASSERT(be16_to_cpu(*xfs_dir2_data_entry_tag_p(dep)) ==
- (char *)dep - (char *)hdr);
+ XFS_WANT_CORRUPTED_RETURN(dep->namelen != 0);
+ XFS_WANT_CORRUPTED_RETURN(
+ !xfs_dir_ino_validate(mp, be64_to_cpu(dep->inumber)));
+ XFS_WANT_CORRUPTED_RETURN(
+ be16_to_cpu(*xfs_dir2_data_entry_tag_p(dep)) ==
+ (char *)dep - (char *)hdr);
count++;
lastfree = 0;
if (hdr->magic == cpu_to_be32(XFS_DIR2_BLOCK_MAGIC)) {
be32_to_cpu(lep[i].hashval) == hash)
break;
}
- ASSERT(i < be32_to_cpu(btp->count));
+ XFS_WANT_CORRUPTED_RETURN(i < be32_to_cpu(btp->count));
}
p += xfs_dir2_data_entsize(dep->namelen);
}
/*
* Need to have seen all the entries and all the bestfree slots.
*/
- ASSERT(freeseen == 7);
+ XFS_WANT_CORRUPTED_RETURN(freeseen == 7);
if (hdr->magic == cpu_to_be32(XFS_DIR2_BLOCK_MAGIC)) {
for (i = stale = 0; i < be32_to_cpu(btp->count); i++) {
if (lep[i].address ==
cpu_to_be32(XFS_DIR2_NULL_DATAPTR))
stale++;
if (i > 0)
- ASSERT(be32_to_cpu(lep[i].hashval) >= be32_to_cpu(lep[i - 1].hashval));
+ XFS_WANT_CORRUPTED_RETURN(
+ be32_to_cpu(lep[i].hashval) >=
+ be32_to_cpu(lep[i - 1].hashval));
}
- ASSERT(count == be32_to_cpu(btp->count) - be32_to_cpu(btp->stale));
- ASSERT(stale == be32_to_cpu(btp->stale));
+ XFS_WANT_CORRUPTED_RETURN(count ==
+ be32_to_cpu(btp->count) - be32_to_cpu(btp->stale));
+ XFS_WANT_CORRUPTED_RETURN(stale == be32_to_cpu(btp->stale));
}
+ return 0;
+}
+
+void
+xfs_dir2_data_verify(
+ struct xfs_buf *bp)
+{
+ struct xfs_mount *mp = bp->b_target->bt_mount;
+ struct xfs_dir2_data_hdr *hdr = bp->b_addr;
+ int block_ok = 0;
+
+ block_ok = hdr->magic == cpu_to_be32(XFS_DIR2_DATA_MAGIC);
+ block_ok = block_ok && __xfs_dir2_data_check(NULL, bp) == 0;
+
+ if (!block_ok) {
+ XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, mp, hdr);
+ xfs_buf_ioerror(bp, EFSCORRUPTED);
+ }
+}
+
+static void
+xfs_dir2_data_write_verify(
+ struct xfs_buf *bp)
+{
+ xfs_dir2_data_verify(bp);
+}
+
+void
+xfs_dir2_data_read_verify(
+ struct xfs_buf *bp)
+{
+ xfs_dir2_data_verify(bp);
+ bp->b_pre_io = xfs_dir2_data_write_verify;
+ bp->b_iodone = NULL;
+ xfs_buf_ioend(bp, 0);
+}
+
+
+int
+xfs_dir2_data_read(
+ struct xfs_trans *tp,
+ struct xfs_inode *dp,
+ xfs_dablk_t bno,
+ xfs_daddr_t mapped_bno,
+ struct xfs_buf **bpp)
+{
+ return xfs_da_read_buf(tp, dp, bno, mapped_bno, bpp,
+ XFS_DATA_FORK, xfs_dir2_data_read_verify);
+}
+
+int
+xfs_dir2_data_readahead(
+ struct xfs_trans *tp,
+ struct xfs_inode *dp,
+ xfs_dablk_t bno,
+ xfs_daddr_t mapped_bno)
+{
+ return xfs_da_reada_buf(tp, dp, bno, mapped_bno,
+ XFS_DATA_FORK, xfs_dir2_data_read_verify);
}
-#endif
/*
* Given a data block and an unused entry from that block,
projects / deliverable / linux.git / blobdiff