mirror of https://github.com/sipwise/iaxmodem.git
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
62 lines
1.5 KiB
62 lines
1.5 KiB
/*
|
|
* Copyright (c) 2007 Albert Lee <trisk@acm.jhu.edu>.
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person
|
|
* obtaining a copy of this software and associated documentation
|
|
* files (the "Software"), to deal in the Software without
|
|
* restriction, including without limitation the rights to use,
|
|
* copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
* copies of the Software, and to permit persons to whom the
|
|
* Software is furnished to do so, subject to the following
|
|
* conditions:
|
|
*
|
|
* The above copyright notice and this permission notice shall be
|
|
* included in all copies or substantial portions of the Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
|
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
|
|
* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
|
|
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
|
|
* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
|
|
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
|
|
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
|
|
* OTHER DEALINGS IN THE SOFTWARE.
|
|
*/
|
|
|
|
int daemon(int nochdir, int noclose);
|
|
|
|
int daemon(int nochdir, int noclose)
|
|
{
|
|
int fd, i;
|
|
|
|
switch (fork()) {
|
|
case 0:
|
|
break;
|
|
case -1:
|
|
return -1;
|
|
default:
|
|
_exit(0);
|
|
}
|
|
|
|
if (!nochdir) {
|
|
chdir("/");
|
|
}
|
|
|
|
if (setsid() < 0) {
|
|
return -1;
|
|
}
|
|
|
|
if (!noclose) {
|
|
if ((fd = open("/dev/null", O_RDWR) >= 0)) {
|
|
for (i = 0; i < 3; i++) {
|
|
dup2(fd, i);
|
|
}
|
|
if (fd > 2) {
|
|
close(fd);
|
|
}
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|