X-Git-Url: https://git.octo.it/?p=collectd.git;a=blobdiff_plain;f=src%2Fping.c;h=5f66aab341f552cadb2d786bde09784d2272b2be;hp=59ddbc9615d3bdac020a22c8741c80b9e9b332ec;hb=d782a871aca61ac966ee8d928930719bd0c05023;hpb=7dcf9ab7675fe91d1bd74998f55031bc3b0480c0

diff --git a/src/ping.c b/src/ping.c
index 59ddbc96..5f66aab3 100644
--- a/src/ping.c
+++ b/src/ping.c
@@ -35,6 +35,10 @@
 # include <netdb.h> /* NI_MAXHOST */
 #endif
 
+#ifdef HAVE_SYS_CAPABILITY_H
+# include <sys/capability.h>
+#endif
+
 #include <oping.h>
 
 #ifndef NI_MAXHOST
@@ -447,6 +451,20 @@ static int ping_init (void) /* {{{ */
         "Will use a timeout of %gs.", ping_timeout);
   }
 
+#if defined(HAVE_SYS_CAPABILITY_H) && defined(CAP_NET_RAW)
+  if (check_capability (CAP_NET_RAW) != 0)
+  {
+    if (getuid () == 0)
+      WARNING ("ping plugin: Running collectd as root, but the CAP_NET_RAW "
+          "capability is missing. The plugin's read function will probably "
+          "fail. Is your init system dropping capabilities?");
+    else
+      WARNING ("ping plugin: collectd doesn't have the CAP_NET_RAW capability. "
+          "If you don't want to run collectd as root, try running \"setcap "
+          "cap_net_raw=ep\" on the collectd binary.");
+  }
+#endif
+
   return (start_thread ());
 } /* }}} int ping_init */