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  * This program is free software; you can redistribute it and/or modify it
   9  * under the terms of the GNU General Public License, version 2 only, as
  10  * published by the Free Software Foundation.
  11  *
  12  * This program is distributed in the hope that it will be useful, but WITHOUT
  13  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  14  * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
  15  * more details.
  16  *
  17  * You should have received a copy of the GNU General Public License along with
  18  * this program; if not, write to the Free Software Foundation, Inc., 51
  19  * Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  20  */
  21
  22 #include <unistd.h>
  23 #include <common/macros.h>
  24
  25 /*
  26  * Daemonize this process by forking and making the parent wait for the child
  27  * to signal it indicating readiness. Once received, the parent successfully
  28  * quits.
  29  *
  30  * The child process undergoes the same action that daemon(3) does meaning
  31  * setsid, chdir, and dup /dev/null into 0, 1 and 2.
  32  *
  33  * Return 0 on success else -1 on error.
  34  */
  35 LTTNG_HIDDEN
  36 int lttng_daemonize(pid_t *child_ppid, int *completion_flag,
  37                 int close_fds);
  38
  39 #endif /* LTTNG_DAEMONIZE_H */