1 files changed, 22 insertions, 0 deletions
diff --git a/rdns_scan/zmap4rdns/lib/lockfd.h b/rdns_scan/zmap4rdns/lib/lockfd.h
new file mode 100644
index 0000000..625534a
--- /dev/null
+++ b/rdns_scan/zmap4rdns/lib/lockfd.h
@@ -0,0 +1,22 @@
+/*
+ * Copyright 2021 Regents of the University of Michigan
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <stdio.h>
+
+int lock_fd(int fd);
+int unlock_fd(int fd);
+int lock_file(FILE *f);
+int unlock_file(FILE *f);