2 * Copyright (c) 1991, 1993
3 * The Regents of the University of California. All rights reserved.
5 * This code is derived from software contributed to Berkeley by
6 * Donn Seeley at Berkeley Software Design, Inc.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. All advertising materials mentioning features or use of this software
17 * must display the following acknowledgement:
18 * This product includes software developed by the University of
19 * California, Berkeley and its contributors.
20 * 4. Neither the name of the University nor the names of its contributors
21 * may be used to endorse or promote products derived from this software
22 * without specific prior written permission.
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36 * @(#) Copyright (c) 1991, 1993 The Regents of the University of California. All rights reserved.
37 * @(#)init.c 8.1 (Berkeley) 7/15/93
38 * $FreeBSD: src/sbin/init/init.c,v 1.38.2.8 2001/10/22 11:27:32 des Exp $
41 #include <sys/param.h>
42 #include <sys/ioctl.h>
43 #include <sys/mount.h>
44 #include <sys/sysctl.h>
61 #include <sys/reboot.h>
66 #include "pathnames.h"
68 static int setctty(const char *);
69 static void runcom(char **);
72 * The mother of all processes.
75 main(int argc __unused, char **argv)
77 /* Dispose of random users. */
79 errx(1, "%s", strerror(EPERM));
81 /* Init is not allowed to die, it would make the kernel panic */
82 signal(SIGTERM, SIG_IGN);
89 setctty(const char *name)
94 if ((fd = open(name, O_RDWR)) == -1) {
98 if (login_tty(fd) == -1) {
107 runcom(char **argv_orig)
110 int status, fd, error;
116 if ((pid = fork()) == 0) {
117 sigemptyset(&sa.sa_mask);
119 sa.sa_handler = SIG_IGN;
120 sigaction(SIGTSTP, &sa, NULL);
121 sigaction(SIGHUP, &sa, NULL);
123 setctty(_PATH_CONSOLE);
126 argv[1] = _PATH_RUNCOM;
127 argv[2] = "autoboot" ;
130 sigprocmask(SIG_SETMASK, &sa.sa_mask, NULL);
132 execv(_PATH_BSHELL, __DECONST(char **, argv));
133 exit(1); /* force single user mode */
137 wpid = waitpid(-1, &status, WUNTRACED);
138 } while (wpid != pid);
140 error = chroot_kernel("/new_root");
144 error = chroot("/new_root");
148 execv("/sbin/init", __DECONST(char **, argv_orig));
150 /* We failed to exec /sbin/init in the chroot, sleep forever */