1 /* Process handling support code */
3 /* (C) 2010 by Harald Welte <laforge@gnumonks.org>
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License along
17 * with this program; if not, write to the Free Software Foundation, Inc.,
18 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
26 #include <sys/types.h>
29 int osmo_daemonize(void)
34 /* Check if parent PID == init, in which case we are already a daemon */
38 /* Fork from the parent process */
41 /* some error happened */
46 /* if we have received a positive PID, then we are the parent
51 /* FIXME: do we really want this? */
54 /* Create a new session and set process group ID */
59 /* Change to the /tmp directory, which prevents the CWD from being locked
60 * and unable to remove it */
65 /* Redirect stdio to /dev/null */
66 /* since C89/C99 says stderr is a macro, we can safely do this! */
68 freopen("/dev/null", "r", stdin);
69 freopen("/dev/null", "w", stdout);
70 freopen("/dev/null", "w", stderr);