aboutsummaryrefslogtreecommitdiff
path: root/fs/xfs/xfs_btree.c
diff options
context:
space:
mode:
Diffstat (limited to 'fs/xfs/xfs_btree.c')
-rw-r--r--fs/xfs/xfs_btree.c41
1 files changed, 41 insertions, 0 deletions
diff --git a/fs/xfs/xfs_btree.c b/fs/xfs/xfs_btree.c
index 28cc7681834..8503ed5d10a 100644
--- a/fs/xfs/xfs_btree.c
+++ b/fs/xfs/xfs_btree.c
@@ -3764,3 +3764,44 @@ error0:
XFS_BTREE_TRACE_CURSOR(cur, XBT_ERROR);
return error;
}
+
+/*
+ * Get the data from the pointed-to record.
+ */
+int /* error */
+xfs_btree_get_rec(
+ struct xfs_btree_cur *cur, /* btree cursor */
+ union xfs_btree_rec **recp, /* output: btree record */
+ int *stat) /* output: success/failure */
+{
+ struct xfs_btree_block *block; /* btree block */
+ struct xfs_buf *bp; /* buffer pointer */
+ int ptr; /* record number */
+#ifdef DEBUG
+ int error; /* error return value */
+#endif
+
+ ptr = cur->bc_ptrs[0];
+ block = xfs_btree_get_block(cur, 0, &bp);
+
+#ifdef DEBUG
+ error = xfs_btree_check_block(cur, block, 0, bp);
+ if (error)
+ return error;
+#endif
+
+ /*
+ * Off the right end or left end, return failure.
+ */
+ if (ptr > xfs_btree_get_numrecs(block) || ptr <= 0) {
+ *stat = 0;
+ return 0;
+ }
+
+ /*
+ * Point to the record and extract its data.
+ */
+ *recp = xfs_btree_rec_addr(cur, ptr, block);
+ *stat = 1;
+ return 0;
+}