src/common/daemonize.hpp

   1 #ifndef LTTNG_DAEMONIZE_H
   2 #define LTTNG_DAEMONIZE_H
   3
   4 /*
   5  * Copyright (C) 2013 David Goulet <dgoulet@efficios.com>
   6  * Copyright (C) 2014 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
   7  *
   8  * SPDX-License-Identifier: GPL-2.0-only
   9  *
  10  */
  11
  12 #include <common/macros.hpp>
  13
  14 #include <unistd.h>
  15
  16 /*
  17  * Daemonize this process by forking and making the parent wait for the child
  18  * to signal it indicating readiness. Once received, the parent successfully
  19  * quits.
  20  *
  21  * The child process undergoes the same action that daemon(3) does meaning
  22  * setsid, chdir, and dup /dev/null into 0, 1 and 2.
  23  *
  24  * Return 0 on success else -1 on error.
  25  */
  26 int lttng_daemonize(pid_t *child_ppid, int *completion_flag, int close_fds);
  27
  28 #endif /* LTTNG_DAEMONIZE_H */