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path: root/fs/xfs/xfs_dir2_leaf.c
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Diffstat (limited to 'fs/xfs/xfs_dir2_leaf.c')
-rw-r--r--fs/xfs/xfs_dir2_leaf.c93
1 files changed, 61 insertions, 32 deletions
diff --git a/fs/xfs/xfs_dir2_leaf.c b/fs/xfs/xfs_dir2_leaf.c
index bc52b803d79b..93535992cb60 100644
--- a/fs/xfs/xfs_dir2_leaf.c
+++ b/fs/xfs/xfs_dir2_leaf.c
@@ -263,20 +263,21 @@ xfs_dir2_leaf_addname(
* If we don't have enough free bytes but we can make enough
* by compacting out stale entries, we'll do that.
*/
- if ((char *)bestsp - (char *)&leaf->ents[be16_to_cpu(leaf->hdr.count)] < needbytes &&
- be16_to_cpu(leaf->hdr.stale) > 1) {
+ if ((char *)bestsp - (char *)&leaf->ents[be16_to_cpu(leaf->hdr.count)] <
+ needbytes && be16_to_cpu(leaf->hdr.stale) > 1) {
compact = 1;
}
/*
* Otherwise if we don't have enough free bytes we need to
* convert to node form.
*/
- else if ((char *)bestsp - (char *)&leaf->ents[be16_to_cpu(leaf->hdr.count)] <
- needbytes) {
+ else if ((char *)bestsp - (char *)&leaf->ents[be16_to_cpu(
+ leaf->hdr.count)] < needbytes) {
/*
* Just checking or no space reservation, give up.
*/
- if (args->justcheck || args->total == 0) {
+ if ((args->op_flags & XFS_DA_OP_JUSTCHECK) ||
+ args->total == 0) {
xfs_da_brelse(tp, lbp);
return XFS_ERROR(ENOSPC);
}
@@ -301,7 +302,7 @@ xfs_dir2_leaf_addname(
* If just checking, then it will fit unless we needed to allocate
* a new data block.
*/
- if (args->justcheck) {
+ if (args->op_flags & XFS_DA_OP_JUSTCHECK) {
xfs_da_brelse(tp, lbp);
return use_block == -1 ? XFS_ERROR(ENOSPC) : 0;
}
@@ -1110,7 +1111,7 @@ xfs_dir2_leaf_getdents(
*offset = XFS_DIR2_MAX_DATAPTR;
else
*offset = xfs_dir2_byte_to_dataptr(mp, curoff);
- kmem_free(map, map_size * sizeof(*map));
+ kmem_free(map);
if (bp)
xfs_da_brelse(NULL, bp);
return error;
@@ -1298,12 +1299,13 @@ xfs_dir2_leaf_lookup(
((char *)dbp->data +
xfs_dir2_dataptr_to_off(dp->i_mount, be32_to_cpu(lep->address)));
/*
- * Return the found inode number.
+ * Return the found inode number & CI name if appropriate
*/
args->inumber = be64_to_cpu(dep->inumber);
+ error = xfs_dir_cilookup_result(args, dep->name, dep->namelen);
xfs_da_brelse(tp, dbp);
xfs_da_brelse(tp, lbp);
- return XFS_ERROR(EEXIST);
+ return XFS_ERROR(error);
}
/*
@@ -1319,8 +1321,8 @@ xfs_dir2_leaf_lookup_int(
int *indexp, /* out: index in leaf block */
xfs_dabuf_t **dbpp) /* out: data buffer */
{
- xfs_dir2_db_t curdb; /* current data block number */
- xfs_dabuf_t *dbp; /* data buffer */
+ xfs_dir2_db_t curdb = -1; /* current data block number */
+ xfs_dabuf_t *dbp = NULL; /* data buffer */
xfs_dir2_data_entry_t *dep; /* data entry */
xfs_inode_t *dp; /* incore directory inode */
int error; /* error return code */
@@ -1331,6 +1333,8 @@ xfs_dir2_leaf_lookup_int(
xfs_mount_t *mp; /* filesystem mount point */
xfs_dir2_db_t newdb; /* new data block number */
xfs_trans_t *tp; /* transaction pointer */
+ xfs_dir2_db_t cidb = -1; /* case match data block no. */
+ enum xfs_dacmp cmp; /* name compare result */
dp = args->dp;
tp = args->trans;
@@ -1338,11 +1342,10 @@ xfs_dir2_leaf_lookup_int(
/*
* Read the leaf block into the buffer.
*/
- if ((error =
- xfs_da_read_buf(tp, dp, mp->m_dirleafblk, -1, &lbp,
- XFS_DATA_FORK))) {
+ error = xfs_da_read_buf(tp, dp, mp->m_dirleafblk, -1, &lbp,
+ XFS_DATA_FORK);
+ if (error)
return error;
- }
*lbpp = lbp;
leaf = lbp->data;
xfs_dir2_leaf_check(dp, lbp);
@@ -1354,9 +1357,9 @@ xfs_dir2_leaf_lookup_int(
* Loop over all the entries with the right hash value
* looking to match the name.
*/
- for (lep = &leaf->ents[index], dbp = NULL, curdb = -1;
- index < be16_to_cpu(leaf->hdr.count) && be32_to_cpu(lep->hashval) == args->hashval;
- lep++, index++) {
+ for (lep = &leaf->ents[index]; index < be16_to_cpu(leaf->hdr.count) &&
+ be32_to_cpu(lep->hashval) == args->hashval;
+ lep++, index++) {
/*
* Skip over stale leaf entries.
*/
@@ -1373,10 +1376,10 @@ xfs_dir2_leaf_lookup_int(
if (newdb != curdb) {
if (dbp)
xfs_da_brelse(tp, dbp);
- if ((error =
- xfs_da_read_buf(tp, dp,
- xfs_dir2_db_to_da(mp, newdb), -1, &dbp,
- XFS_DATA_FORK))) {
+ error = xfs_da_read_buf(tp, dp,
+ xfs_dir2_db_to_da(mp, newdb),
+ -1, &dbp, XFS_DATA_FORK);
+ if (error) {
xfs_da_brelse(tp, lbp);
return error;
}
@@ -1386,24 +1389,50 @@ xfs_dir2_leaf_lookup_int(
/*
* Point to the data entry.
*/
- dep = (xfs_dir2_data_entry_t *)
- ((char *)dbp->data +
- xfs_dir2_dataptr_to_off(mp, be32_to_cpu(lep->address)));
+ dep = (xfs_dir2_data_entry_t *)((char *)dbp->data +
+ xfs_dir2_dataptr_to_off(mp, be32_to_cpu(lep->address)));
/*
- * If it matches then return it.
+ * Compare name and if it's an exact match, return the index
+ * and buffer. If it's the first case-insensitive match, store
+ * the index and buffer and continue looking for an exact match.
*/
- if (dep->namelen == args->namelen &&
- dep->name[0] == args->name[0] &&
- memcmp(dep->name, args->name, args->namelen) == 0) {
- *dbpp = dbp;
+ cmp = mp->m_dirnameops->compname(args, dep->name, dep->namelen);
+ if (cmp != XFS_CMP_DIFFERENT && cmp != args->cmpresult) {
+ args->cmpresult = cmp;
*indexp = index;
- return 0;
+ /* case exact match: return the current buffer. */
+ if (cmp == XFS_CMP_EXACT) {
+ *dbpp = dbp;
+ return 0;
+ }
+ cidb = curdb;
}
}
+ ASSERT(args->op_flags & XFS_DA_OP_OKNOENT);
+ /*
+ * Here, we can only be doing a lookup (not a rename or remove).
+ * If a case-insensitive match was found earlier, re-read the
+ * appropriate data block if required and return it.
+ */
+ if (args->cmpresult == XFS_CMP_CASE) {
+ ASSERT(cidb != -1);
+ if (cidb != curdb) {
+ xfs_da_brelse(tp, dbp);
+ error = xfs_da_read_buf(tp, dp,
+ xfs_dir2_db_to_da(mp, cidb),
+ -1, &dbp, XFS_DATA_FORK);
+ if (error) {
+ xfs_da_brelse(tp, lbp);
+ return error;
+ }
+ }
+ *dbpp = dbp;
+ return 0;
+ }
/*
* No match found, return ENOENT.
*/
- ASSERT(args->oknoent);
+ ASSERT(cidb == -1);
if (dbp)
xfs_da_brelse(tp, dbp);
xfs_da_brelse(tp, lbp);
generated by cgit v1.2.3 (git 2.0.4) at 2024-06-03 07:27:02 +0000