PROC *
KERN_fork(PROC *proc)
{
PROC *new_proc;
new_proc = PROC_create();
PROC_copy(proc, new_proc);
new_proc->ppid = proc->pid;
new_proc->pid = new_pid();
if (proc->list == NULL) {
/* parent was running */
PROC_LIST_append(run_queue, new_proc);
} else {
PROC_LIST_append(proc->list, new_proc);
}
return new_proc;
}
PROC *
KERN_init(void)
{
/* create all the different queues. a process is either
in one of these queues or it's in "cur_proc" */
run_queue = PROC_LIST_create();
sleep_queue = PROC_LIST_create();
zombie_queue = PROC_LIST_create();
/* no process running */
cur_proc = NULL;
/* make the "init" process, parent of all processes */
init_proc = PROC_create();
init_proc->pid = new_pid();
init_proc->state = STATE_RUN;
PROC_LIST_append(run_queue, init_proc);
return init_proc;
}
int
main(int argc, char *argv[])
{
CREW crew;
int i;
int count = 0;
int res;
BOOLEAN result;
char ** keys;
void * statusp;
C = new_conf();
parse_cmdline_cfg(C, argc, argv);
parse_cfgfile(C);
parse_cmdline(C, argc, argv);
RUNNER R = new_runner(conf_get_user(C), conf_get_group(C));
runas(R);
runner_destroy(R);
sigmasker();
if (is_daemon(C)) {
res = fork();
if (res == -1 ){
// ERRROR
NOTIFY(FATAL, "%s: [error] unable to run in the background\n", program_name);
} else if (res == 0) {
// CHILD
PID P = new_pid(conf_get_pidfile(C));
HASH H = conf_get_items(C);
count = conf_get_count(C);
keys = hash_get_keys_delim(H, ':');
if ((crew = new_crew(count, count, FALSE)) == NULL) {
NOTIFY(FATAL, "%s: [error] unable to allocate memory for %d log files", program_name, count);
}
set_pid(P, getpid());
pid_destroy(P);
for (i = 0; i < count && crew_get_shutdown(crew) != TRUE; i++) {
FIDO F = new_fido(C, keys[i]);
result = crew_add(crew, (void*)start, F);
if (result == FALSE) {
NOTIFY(FATAL, "%s: [error] unable to spawn additional threads", program_name);
}
}
crew_join(crew, TRUE, &statusp);
conf_destroy(C);
} else {
// PARENT
}
} else {
HASH H = conf_get_items(C);
count = conf_get_count(C);
keys = hash_get_keys_delim(H, ':');
if ((crew = new_crew(count, count, FALSE)) == NULL) {
NOTIFY(FATAL, "%s: [error] unable to allocate memory for %d log files", program_name, count);
}
for (i = 0; i < count && crew_get_shutdown(crew) != TRUE; i++) {
FIDO F = new_fido(C, keys[i]);
result = crew_add(crew, (void*)start, F);
}
crew_join(crew, TRUE, &statusp);
conf_destroy(C);
}
exit(EXIT_SUCCESS);
} /* end of int main **/