mirror of https://github.com/aria2/aria2
83 lines
2.3 KiB
C++
83 lines
2.3 KiB
C++
/* <!-- copyright */
|
|
/*
|
|
* aria2 - The high speed download utility
|
|
*
|
|
* Copyright (C) 2009 Tatsuhiro Tsujikawa
|
|
*
|
|
* 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*
|
|
* In addition, as a special exception, the copyright holders give
|
|
* permission to link the code of portions of this program with the
|
|
* OpenSSL library under certain conditions as described in each
|
|
* individual source file, and distribute linked combinations
|
|
* including the two.
|
|
* You must obey the GNU General Public License in all respects
|
|
* for all of the code used other than OpenSSL. If you modify
|
|
* file(s) with this exception, you may extend this exception to your
|
|
* version of the file(s), but you are not obligated to do so. If you
|
|
* do not wish to do so, delete this exception statement from your
|
|
* version. If you delete this exception statement from all source
|
|
* files in the program, then also delete it here.
|
|
*/
|
|
/* copyright --> */
|
|
#include "daemon.h"
|
|
|
|
#include <unistd.h>
|
|
#include <cstdio>
|
|
#include <cstdlib>
|
|
|
|
namespace aria2 {
|
|
|
|
int daemon(int nochdir, int noclose)
|
|
{
|
|
#ifdef HAVE_WORKING_FORK
|
|
pid_t pid;
|
|
pid = fork();
|
|
if(pid == -1) {
|
|
return -1;
|
|
} else if(pid > 0) {
|
|
exit(EXIT_SUCCESS);
|
|
}
|
|
if(setsid() == -1) {
|
|
return -1;
|
|
}
|
|
pid = fork();
|
|
if(pid == -1) {
|
|
return -1;
|
|
} else if(pid > 0) {
|
|
exit(EXIT_SUCCESS);
|
|
}
|
|
if(nochdir == 0) {
|
|
if(chdir("/") == -1) {
|
|
return -1;
|
|
}
|
|
}
|
|
if(noclose == 0) {
|
|
if(freopen("/dev/null", "r", stdin) == 0) {
|
|
return -1;
|
|
}
|
|
if(freopen("/dev/null", "w", stdout) == 0) {
|
|
return -1;
|
|
}
|
|
if(freopen("/dev/null", "w", stderr) == 0) {
|
|
return -1;
|
|
}
|
|
}
|
|
#endif // HAVE_WORKING_FORK
|
|
return 0;
|
|
}
|
|
|
|
} // namespace aria2
|