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

   1 /*
   2  * Copyright (C) 2011 EfficiOS Inc.
   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 "lttng-sessiond.hpp"
  11
  12 #include <signal.h>
  13
  14 /* Notify parents that we are ready for cmd and health check */
  15 void sessiond_signal_parents()
  16 {
  17         /*
  18          * Notify parent pid that we are ready to accept command
  19          * for client side.  This ppid is the one from the
  20          * external process that spawned us.
  21          */
  22         if (the_config.sig_parent) {
  23                 kill(the_ppid, SIGUSR1);
  24         }
  25
  26         /*
  27          * Notify the parent of the fork() process that we are
  28          * ready.
  29          */
  30         if (the_config.daemonize || the_config.background) {
  31                 kill(the_child_ppid, SIGUSR1);
  32         }
  33 }