X-Git-Url: https://git.octo.it/?a=blobdiff_plain;f=src%2Fping.c;h=9b5d5ca581a04b6e43820992545efedf2cad759f;hb=e5e5d99350fa54e22f07b90fbc3102df51565ad9;hp=4932bae57e14b8c234a664c5efb03e6e39c1d39e;hpb=c7d859191d8fbfc129dea8cfaf9e13e78fd6642c;p=collectd.git

diff --git a/src/ping.c b/src/ping.c
index 4932bae5..9b5d5ca5 100644
--- a/src/ping.c
+++ b/src/ping.c
@@ -36,6 +36,10 @@
 # include <netdb.h> /* NI_MAXHOST */
 #endif
 
+#ifdef HAVE_SYS_CAPABILITY_H
+# include <sys/capability.h>
+#endif
+
 #include <oping.h>
 
 #ifndef NI_MAXHOST
@@ -448,6 +452,20 @@ static int ping_init (void) /* {{{ */
         "Will use a timeout of %gs.", ping_timeout);
   }
 
+#ifdef HAVE_SYS_CAPABILITY_H
+  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 */