From: Florian Forster <octo@collectd.org>
Date: Thu, 17 Dec 2015 13:18:59 +0000 (+0100)
Subject: gmond plugin: Check return value of sendto(2).
X-Git-Tag: collectd-5.5.1~12^2~3
X-Git-Url: https://git.octo.it/?a=commitdiff_plain;h=1c639d74e12ae6da05f93596478429c389246b4e;p=collectd.git

gmond plugin: Check return value of sendto(2).

CID: 38113
---

diff --git a/src/gmond.c b/src/gmond.c
index 99d1334b..629a9ad2 100644
--- a/src/gmond.c
+++ b/src/gmond.c
@@ -411,10 +411,19 @@ static int request_meta_data (const char *host, const char *name) /* {{{ */
 
   pthread_mutex_lock (&mc_send_sockets_lock);
   for (i = 0; i < mc_send_sockets_num; i++)
-    sendto (mc_send_sockets[i].fd, buffer, (size_t) buffer_size,
+  {
+    ssize_t status = sendto (mc_send_sockets[i].fd, buffer, (size_t) buffer_size,
         /* flags = */ 0,
         (struct sockaddr *) &mc_send_sockets[i].addr,
         mc_send_sockets[i].addrlen);
+    if (status == -1)
+    {
+      char errbuf[1024];
+      ERROR ("gmond plugin: sendto(2) failed: %s",
+             sstrerror (errno, errbuf, sizeof (errbuf)));
+      continue;
+    }
+  }
   pthread_mutex_unlock (&mc_send_sockets_lock);
 
   sfree (msg.Ganglia_metadata_msg_u.grequest.metric_id.host);