Add daemonize() to libcommon
[lttng-tools.git] / 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
24 /*
25 * Daemonize this process by forking and making the parent wait for the child
26 * to signal it indicating readiness. Once received, the parent successfully
27 * quits.
28 *
29 * The child process undergoes the same action that daemon(3) does meaning
30 * setsid, chdir, and dup /dev/null into 0, 1 and 2.
31 *
32 * Return 0 on success else -1 on error.
33 */
34 int lttng_daemonize(pid_t *child_ppid, int *completion_flag,
35 int close_fds);
36
37 #endif /* LTTNG_DAEMONIZE_H */
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