#include <stdlib.h>
#include <unistd.h>
#include <sys/stat.h>
#include <pwd.h>

#include "hlswmaster.h"

void daemonize(char *pw_name) {
	int     fail = 0;
	pid_t   pid;
	struct  passwd *pwl;

	if ((pid = fork()) < 0) {
		log_print("daemonize(): fork()");
		exit(-1);

	} else if (pid != 0) {
		exit(0);

	} else {
		/* Kindprozess weiterlaufen lassen */
		if (setsid() == -1) {
			log_print("daemonize: setsid()");
			exit(-1);
		}

		umask(0) ;

		if (pw_name != NULL) {
			if((pwl = getpwnam(pw_name)) == NULL) {
				log_print("mkdaemon(): getpwnam(\"%s\")", pw_name);
				exit(-1);
			}

			if (setgid(pwl->pw_gid) != 0) {
				log_print("mkdaemon(): setgid()");
				fail = 1;
			}

			if (setuid(pwl->pw_uid) != 0) {
				log_print("mkdaemon(): setuid()");
				fail = 1;
			}

			if (fail == 0) {
				log_print("user changed to: %s, pid: %d", pw_name, getpid());
			}
		}
	}
}