Further error checking, all possibilities should now be accounted for

Author: acv

src/util.c

@@ -117,11 +117,17 @@ execute(const char *cmd_line, int quiet)
     debug(LOG_DEBUG, "Waiting for PID %d to exit", pid);
     rc = waitpid(pid, &status, 0);
     debug(LOG_DEBUG, "Process PID %d exited", rc);
+    
+    if (-1 == rc) {
+        debug(LOG_ERR, "waitpid() failed (%s)", strerror(errno));
+        return 1; /* waitpid failed. */
+    }
 
     if (WIFEXITED(status)) {
         return (WEXITSTATUS(status));
     } else {
         /* If we get here, child did not exit cleanly. Will return non-zero exit code to caller*/
+        debug(LOG_DEBUG, "Child may have been killed.");
         return 1;
     }
 }