/* make this program run detached from the current console */
int proc__daemonize(void)
{
pid_t process_id = 0;
process_id = fork();
if (process_id < 0) {
LOGE("[ERROR] daemonize: fork failed! exit.\n");
exit(1);
}
if (process_id > 0) {
LOGD("[DEBUG] child pid: %d. exit.\n", process_id);
exit(0);
}
/* now pid==0, child (daemon) continues */
LOGD("[DEBUG] child process...\n");
setsid(); // obtain a new process group
umask(027); /* restrict file creation mode to 750 */
chdir("/"); // set the working directory to the root directory
redirect_fds();
LOGD("[DEBUG] daemonize ok.\n");
// ok...
return 0;
}
int proc__run_background(const char* cmdline, int sleep_msec)
{
pid_t process_id = 0;
process_id = fork();
if (process_id < 0) {
LOGE("[-] ERROR: run_background: fork failed!\n");
return -1;
}
if (process_id > 0) {
LOGI("[+] run_background: child pid: %d.\n", process_id);
return 0;
}
/* now pid==0, child (daemon) continues */
LOGI("[+] child process...\n");
setsid(); // obtain a new process group
if(sleep_msec>0) {
usleep(sleep_msec*1000); // give parent-process times to breathe...
}
umask(027); /* restrict file creation mode to 750 */
chdir("/"); // set the working directory to the root directory
redirect_fds();
// ok...
LOGI("[+] child-proc execl...\n");
int ret = execl(cmdline, cmdline, NULL);
// this should not return
LOGE("[-] ERROR: OOPS! execl returned %d, errno: %d/%s\n", ret, errno, strerror(errno));
return ret;
}
int
daemon_init(const char *pidfile) {
int pid = check_pid(pidfile);
if (pid) {
fprintf(stderr, "Skynet is already running, pid = %d.\n", pid);
return 1;
}
#ifdef __APPLE__
fprintf(stderr, "'daemon' is deprecated: first deprecated in OS X 10.5 , use launchd instead.\n");
#else
if (daemon(1,1)) {
fprintf(stderr, "Can't daemonize.\n");
return 1;
}
#endif
pid = write_pid(pidfile);
if (pid == 0) {
return 1;
}
if (redirect_fds()) {
return 1;
}
return 0;
}
int daemon (int nochdir, int noclose)
{
int status = 0;
printf ("_SC_OPEN_MAX=%d", sysconf (_SC_OPEN_MAX));
/* Fork once to go into the background. */
if ( (status = do_fork()) < 0 )
;
/* Create new session */
else if (setsid() < 0) /* shouldn't fail */
status = -1;
/* Fork again to ensure that daemon never reacquires a control terminal. */
else if ( (status = do_fork()) < 0 )
;
else
{
/* clear any inherited umask(2) value */
umask (0);
/* We're there. */
if (! nochdir)
{
/* Go to a neutral corner. */
chdir("/");
}
if (! noclose)
redirect_fds();
}
return status;
}
int daemon(int nochdir, int noclose, boost::system::error_code &ec)
{
int status = 0;
//openlog("daemonize", LOG_PID, LOG_DAEMON);
// fork once to go into the background.
if((status = do_fork()) < 0 )
;
// create new session
else if(setsid() < 0) // shouldn't fail
status = -1;
// fork again to ensure that daemon never reacquires a control terminal.
else if((status = do_fork()) < 0 )
;
else
{
// clear any inherited umask(2) value
umask(0);
// we're there.
if(!nochdir)
{
// go to a neutral corner.
chdir("/");
}
if(!noclose)
{
redirect_fds(ec);
}
}
return status;
}
