From: Guus Sliepen <guus@meshlink.io>
Date: Mon, 12 Jul 2021 19:26:24 +0000 (+0200)
Subject: Check for the availability of flock().
X-Git-Url: http://git.meshlink.io/?p=meshlink-tiny;a=commitdiff_plain;h=e3c87a412475330b668d99d23ea0c612f2a59294

Check for the availability of flock().
---

diff --git a/configure.ac b/configure.ac
index 022bba7..f349de1 100644
--- a/configure.ac
+++ b/configure.ac
@@ -128,7 +128,7 @@ MeshLink_ATTRIBUTE(__malloc__)
 MeshLink_ATTRIBUTE(__warn_unused_result__)
 
 dnl Checks for library functions.
-AC_CHECK_FUNCS([asprintf fchmod fork gettimeofday random pselect select setns strdup usleep getifaddrs freeifaddrs],
+AC_CHECK_FUNCS([asprintf fchmod flock fork gettimeofday random pselect select setns strdup usleep getifaddrs freeifaddrs],
   [], [], [#include "$srcdir/src/have.h"]
 )
 
diff --git a/src/conf.c b/src/conf.c
index 6ceb23c..cae7bd1 100644
--- a/src/conf.c
+++ b/src/conf.c
@@ -483,9 +483,7 @@ bool main_config_lock(meshlink_handle_t *mesh, const char *lock_filename) {
 	fcntl(fileno(mesh->lockfile), F_SETFD, FD_CLOEXEC);
 #endif
 
-#ifdef HAVE_MINGW
-	// TODO: use _locking()?
-#else
+#ifdef HAVE_FLOCK
 
 	if(flock(fileno(mesh->lockfile), LOCK_EX | LOCK_NB) != 0) {
 		logger(NULL, MESHLINK_ERROR, "Cannot lock %s: %s\n", lock_filename, strerror(errno));