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6a52d0d155
* daemon.c: (daemon) Replace perror with zlog_err. * vty.c: (vty_serv_un) Replace perror with zlog_err. * ripd.c: (rip_create_socket) Replace perror with zlog_err. * ioctl.c: (if_ioctl,if_ioctl_ipv6,if_get_flags) Replace perror with zlog_err. * ioctl_solaris.c: (if_ioctl,if_ioctl_ipv6) Replace perror with zlog_err.
81 lines
1.7 KiB
C
81 lines
1.7 KiB
C
/*
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* Daemonize routine
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* Copyright (C) 1997, 1999 Kunihiro Ishiguro
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*
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* This file is part of GNU Zebra.
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*
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* GNU Zebra 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
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* by the Free Software Foundation; either version 2, or (at your
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* option) any later version.
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*
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* GNU Zebra is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* 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 GNU Zebra; see the file COPYING. If not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#include <zebra.h>
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#ifndef HAVE_DAEMON
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/* Daemonize myself. */
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int
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daemon (int nochdir, int noclose)
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{
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pid_t pid;
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pid = fork ();
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/* In case of fork is error. */
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if (pid < 0)
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{
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zlog_err ("fork failed: %s", safe_strerror(errno));
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return -1;
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}
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/* In case of this is parent process. */
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if (pid != 0)
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exit (0);
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/* Become session leader and get pid. */
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pid = setsid();
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if (pid == -1)
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{
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zlog_err ("setsid failed: %s", safe_strerror(errno));
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return -1;
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}
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/* Change directory to root. */
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if (! nochdir)
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chdir ("/");
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/* File descriptor close. */
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if (! noclose)
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{
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int fd;
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fd = open ("/dev/null", O_RDWR, 0);
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if (fd != -1)
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{
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dup2 (fd, STDIN_FILENO);
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dup2 (fd, STDOUT_FILENO);
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dup2 (fd, STDERR_FILENO);
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if (fd > 2)
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close (fd);
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}
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}
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umask (0027);
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return 0;
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}
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#endif /* HAVE_DAEMON */
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