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/*
* active port forwarder - software for secure forwarding
* Copyright (C) 2003-2007 jeremian <jeremian [at] poczta.fm>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
*/
#include "daemon.h"
#ifndef HAVE_DAEMON
#ifndef HAVE_THIS_DAEMON
#define HAVE_THIS_DAEMON
/*
* Function name: daemon
* Description: Enters into daemon mode. It's the emulation of the daemon
* function from the system.
* Arguments: nochdir - when 0, the directory will be changed to /, otherwise
* the directory will be unchanged
* noclose - when 0, the standard streams will be closed, otherwise
* the streams will be unchanged
* Returns: 0 - success,
* -1 - failure.
*/
int
daemon(int nochdir, int noclose)
{
int retval;
if ((retval = fork()) == 0) {
/* child process */
setsid();
if (nochdir == 0) {
chdir("/");
}
if (noclose == 0) {
retval = open("/dev/null", O_RDWR);
if (retval == -1) {
return retval;
}
dup2(retval, STDIN_FILENO);
dup2(retval, STDOUT_FILENO);
dup2(retval, STDERR_FILENO);
close(retval);
}
}
else {
/* parent process */
if (retval == -1) {
return retval;
}
_exit(0);
}
return 0;
}
#endif
#endif
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