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/*
* daemon.c - "daemonize" a process
*/
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
int daemon(int nochdir, int noclose)
{
int nullfd;
pid_t f;
if (!nochdir) {
if (chdir("/"))
return -1;
}
if (!noclose) {
if ((nullfd = open("/dev/null", O_RDWR)) < 0 ||
dup2(nullfd, 0) < 0 ||
dup2(nullfd, 1) < 0 ||
dup2(nullfd, 2) < 0)
return -1;
close(nullfd);
}
f = fork();
if (f < 0)
return -1;
else if (f > 0)
_exit(0);
return setsid();
}
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