+ new_lck = (struct tdb_lock *)realloc(
+ tdb->file->lockrecs,
+ sizeof(*tdb->file->lockrecs) * (tdb->file->num_lockrecs+1));
+ if (new_lck == NULL) {
+ return tdb_logerr(tdb, TDB_ERR_OOM, TDB_LOG_ERROR,
+ "tdb_nest_lock:"
+ " unable to allocate %zu lock struct",
+ tdb->file->num_lockrecs + 1);
+ }
+ tdb->file->lockrecs = new_lck;
+
+ /* Since fcntl locks don't nest, we do a lock for the first one,
+ and simply bump the count for future ones */
+ ecode = tdb_brlock(tdb, ltype, offset, 1, flags);
+ if (ecode != TDB_SUCCESS) {
+ return ecode;
+ }
+
+ /* First time we grab a lock, perhaps someone died in commit? */
+ if (!(flags & TDB_LOCK_NOCHECK)
+ && tdb->file->num_lockrecs == 0) {
+ tdb_bool_err berr = tdb_needs_recovery(tdb);
+ if (berr != false) {
+ tdb_brunlock(tdb, ltype, offset, 1);
+
+ if (berr < 0)
+ return berr;
+ ecode = tdb_lock_and_recover(tdb);
+ if (ecode == TDB_SUCCESS) {
+ ecode = tdb_brlock(tdb, ltype, offset, 1,
+ flags);
+ }
+ if (ecode != TDB_SUCCESS) {
+ return ecode;
+ }
+ }
+ }
+
+ tdb->file->lockrecs[tdb->file->num_lockrecs].owner = tdb;
+ tdb->file->lockrecs[tdb->file->num_lockrecs].off = offset;
+ tdb->file->lockrecs[tdb->file->num_lockrecs].count = 1;
+ tdb->file->lockrecs[tdb->file->num_lockrecs].ltype = ltype;
+ tdb->file->num_lockrecs++;
+
+ return TDB_SUCCESS;