return 0;
}
+/**
+ * Check whether the record left of a given freelist record is
+ * also a freelist record, and if so, merge the two records.
+ *
+ * Return code:
+ * -1 upon error
+ * 0 if left was not a free record
+ * 1 if left was free and successfully merged.
+ *
+ * The currend record is handed in with pointer and fully read record.
+ *
+ * The left record pointer and struct can be retrieved as result
+ * in lp and lr;
+ */
+static int check_merge_with_left_record(struct tdb_context *tdb,
+ tdb_off_t rec_ptr,
+ struct tdb_record *rec,
+ tdb_off_t *lp,
+ struct tdb_record *lr)
+{
+ tdb_off_t left_ptr;
+ struct tdb_record left_rec;
+ int ret;
+
+ ret = read_record_on_left(tdb, rec_ptr, &left_ptr, &left_rec);
+ if (ret != 0) {
+ return 0;
+ }
+
+ if (left_rec.magic != TDB_FREE_MAGIC) {
+ return 0;
+ }
+
+ /* It's free - expand to include it. */
+ ret = merge_with_left_record(tdb, left_ptr, &left_rec, rec);
+ if (ret != 0) {
+ return -1;
+ }
+
+ if (lp != NULL) {
+ *lp = left_ptr;
+ }
+
+ if (lr != NULL) {
+ *lr = left_rec;
+ }
+
+ return 1;
+}
+
/**
* Add an element into the freelist.
*