all: check return value from daemon() call

* */*main.c: (main) Current versions of Gcc warn if the return value for
  daemon() is not checked.  So add a simple test and exit on failure.

1 files changed, 5 insertions, 2 deletions

diff --git a/ospf6d/ospf6_main.c b/ospf6d/ospf6_main.c
index 73d9150e..a7a96a1f 100644
--- a/ospf6d/ospf6_main.c
+++ b/ospf6d/ospf6_main.c
@@ -282,8 +282,11 @@ main (int argc, char *argv[], char *envp[])
   if (dryrun)
     return(0);
   
-  if (daemon_mode)
-    daemon (0, 0);
+  if (daemon_mode && daemon (0, 0) < 0)
+    {
+      zlog_err("OSPF6d daemon failed: %s", strerror(errno));
+      exit (1);
+    }
 
   /* pid file create */
   pid_output (pid_file);