80 lines
2.6 KiB
C
80 lines
2.6 KiB
C
/***************************************************************************
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* Copyright (C) 03/2005 by Olaf Rempel *
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* razzor@kopf-tisch.de *
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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* This program is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU General Public License for more details. *
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* *
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* You should have received a copy of the GNU General Public License *
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* along with this program; if not, write to the *
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* Free Software Foundation, Inc., *
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* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
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***************************************************************************/
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#include <stdlib.h>
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#include <unistd.h>
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#include <sys/stat.h>
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#include <pwd.h>
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#include "hlswmaster.h"
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/**
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* daemonize()
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* macht den Prozess zu einen Daemon
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* und fuehrt ihn unterem user aus
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*
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* @param char *pw_name
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*
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* TODO: hier schon logging benutzen? stderr? wann exit/return?
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*/
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void daemonize(char *pw_name) {
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int fail = 0;
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pid_t pid;
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struct passwd *pwl;
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if ((pid = fork()) < 0) {
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log_print("daemonize(): fork()");
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exit(-1);
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} else if (pid != 0) {
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/* Elternprozess beenden */
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exit(0);
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} else {
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/* Kindprozess weiterlaufen lassen */
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if (setsid() == -1) {
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log_print("daemonize: setsid()");
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exit(-1);
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}
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umask(0) ;
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if (pw_name != NULL) {
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if((pwl = getpwnam(pw_name)) == NULL) {
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log_print("mkdaemon(): getpwnam(\"%s\")", pw_name);
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exit(-1);
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}
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if (setgid(pwl->pw_gid) != 0) {
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log_print("mkdaemon(): setgid()");
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fail = 1;
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}
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if (setuid(pwl->pw_uid) != 0) {
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log_print("mkdaemon(): setuid()");
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fail = 1;
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}
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if (fail == 0) {
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log_print("user changed to: %s, pid: %d", pw_name, getpid());
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}
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}
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}
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}
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