src/common/daemonize.h

   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 <unistd.h>
  13 #include <common/macros.h>
  14
  15 #ifdef __cplusplus
  16 extern "C" {
  17 #endif
  18
  19 /*
  20  * Daemonize this process by forking and making the parent wait for the child
  21  * to signal it indicating readiness. Once received, the parent successfully
  22  * quits.
  23  *
  24  * The child process undergoes the same action that daemon(3) does meaning
  25  * setsid, chdir, and dup /dev/null into 0, 1 and 2.
  26  *
  27  * Return 0 on success else -1 on error.
  28  */
  29 int lttng_daemonize(pid_t *child_ppid, int *completion_flag,
  30                 int close_fds);
  31
  32 #ifdef __cplusplus
  33 }
  34 #endif
  35
  36 #endif /* LTTNG_DAEMONIZE_H */