Build system: enable the "df" plugin when getmntent_r() is available.

[collectd.git] / src / write_prometheus.c

diff --git a/src/write_prometheus.c b/src/write_prometheus.c
index 97f583f..572ba56 100644 (file)
--- a/src/write_prometheus.c
+++ b/src/write_prometheus.c
@@ -760,10 +760,25 @@ static int prom_open_socket(int addrfamily) {
 
   int fd = -1;
   for (struct addrinfo *ai = res; ai != NULL; ai = ai->ai_next) {
-    fd = socket(ai->ai_family, ai->ai_socktype | SOCK_CLOEXEC, 0);
+    int flags = ai->ai_socktype;
+#ifdef SOCK_CLOEXEC
+    flags |= SOCK_CLOEXEC;
+#endif
+
+    fd = socket(ai->ai_family, flags, 0);
     if (fd == -1)
       continue;
 
+    int tmp = 1;
+    if (setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &tmp, sizeof(tmp)) != 0) {
+      char errbuf[1024];
+      WARNING("write_prometheus: setsockopt(SO_REUSEADDR) failed: %s",
+              sstrerror(errno, errbuf, sizeof(errbuf)));
+      close(fd);
+      fd = -1;
+      continue;
+    }
+
     if (bind(fd, ai->ai_addr, ai->ai_addrlen) != 0) {
       close(fd);
       fd = -1;