src/bin/lttng-sessiond/process-utils.c

   1 /*
   2  * Copyright (C) 2011 David Goulet <david.goulet@polymtl.ca>
   3  * Copyright (C) 2011 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
   4  * Copyright (C) 2013 Jérémie Galarneau <jeremie.galarneau@efficios.com>
   5  *
   6  * SPDX-License-Identifier: GPL-2.0-only
   7  *
   8  */
   9
  10 #include <signal.h>
  11 #include "lttng-sessiond.h"
  12
  13 /* Notify parents that we are ready for cmd and health check */
  14 void sessiond_signal_parents(void)
  15 {
  16         /*
  17          * Notify parent pid that we are ready to accept command
  18          * for client side.  This ppid is the one from the
  19          * external process that spawned us.
  20          */
  21         if (the_config.sig_parent) {
  22                 kill(the_ppid, SIGUSR1);
  23         }
  24
  25         /*
  26          * Notify the parent of the fork() process that we are
  27          * ready.
  28          */
  29         if (the_config.daemonize || the_config.background) {
  30                 kill(the_child_ppid, SIGUSR1);
  31         }
  32 }