SIGALRM could be received before child_process is created (Jason Crawford)

git-svn-id: https://nagiosplug.svn.sourceforge.net/svnroot/nagiosplug/nagiosplug/trunk@1317 f882894a-f735-0410-b71e-b25c423dba1c

1 files changed, 9 insertions, 5 deletions

diff --git a/plugins/popen.c b/plugins/popen.c
index f6810691..5da12a02 100644
--- a/plugins/popen.c
+++ b/plugins/popen.c
@@ -270,12 +270,16 @@ popen_timeout_alarm_handler (int signo)
 {
         int fh;
         if (signo == SIGALRM) {
-                fh=fileno (child_process);
-                if(fh >= 0){
-                        kill (childpid[fh], SIGKILL);
-                }
-                printf (_("CRITICAL - Plugin timed out after %d seconds\n"),
+                if (child_process != NULL) {
+                        fh=fileno (child_process);
+                        if(fh >= 0){
+                                kill (childpid[fh], SIGKILL);
+                        }
+                        printf (_("CRITICAL - Plugin timed out after %d seconds\n"),
                                                 timeout_interval);
+                } else {
+                        printf (_("CRITICAL - popen timeout received, but no child process\n"));
+                }
                 exit (STATE_CRITICAL);
         }
 }