80 lines
2.5 KiB
C
80 lines
2.5 KiB
C
/***************************************************************************
|
|
* Copyright (C) 03/2005 by Olaf Rempel *
|
|
* razzor@kopf-tisch.de *
|
|
* *
|
|
* This program is free software; you can redistribute it and/or modify *
|
|
* it under the terms of the GNU General Public License as published by *
|
|
* the Free Software Foundation; either version 2 of the License, or *
|
|
* (at your option) any later version. *
|
|
* *
|
|
* This program is distributed in the hope that it will be useful, *
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
|
|
* GNU General Public License for more details. *
|
|
* *
|
|
* You should have received a copy of the GNU General Public License *
|
|
* along with this program; if not, write to the *
|
|
* Free Software Foundation, Inc., *
|
|
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
|
|
***************************************************************************/
|
|
#include <stdlib.h>
|
|
#include <unistd.h>
|
|
#include <sys/stat.h>
|
|
#include <pwd.h>
|
|
|
|
#include "hlswmaster.h"
|
|
|
|
/**
|
|
* daemonize()
|
|
* macht den Prozess zu einen Daemon
|
|
* und fuehrt ihn unterem user aus
|
|
*
|
|
* @param char *pw_name
|
|
*
|
|
* TODO: hier schon logging benutzen? stderr? wann exit/return?
|
|
*/
|
|
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) {
|
|
/* Elternprozess beenden */
|
|
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());
|
|
}
|
|
}
|
|
}
|
|
}
|