1 files changed, 20 insertions, 0 deletions
diff --git a/src/lib/fs/lockfile.h b/src/lib/fs/lockfile.h
new file mode 100644
index 0000000000..e26349811c
--- /dev/null
+++ b/src/lib/fs/lockfile.h
@@ -0,0 +1,20 @@
+/* Copyright (c) 2003-2004, Roger Dingledine
+ * Copyright (c) 2004-2006, Roger Dingledine, Nick Mathewson.
+ * Copyright (c) 2007-2018, The Tor Project, Inc. */
+/* See LICENSE for licensing information */
+
+/**
+ * \file lockfile.h
+ *
+ * \brief Header for lockfile.c
+ **/
+
+#ifndef TOR_LOCKFILE_H
+#define TOR_LOCKFILE_H
+
+typedef struct tor_lockfile_t tor_lockfile_t;
+tor_lockfile_t *tor_lockfile_lock(const char *filename, int blocking,
+                                  int *locked_out);
+void tor_lockfile_unlock(tor_lockfile_t *lockfile);
+
+#endif