xref: /freebsd/libexec/rc/rc (revision 61e21613)
1#!/bin/sh
2#
3# Copyright (c) 2000-2004  The FreeBSD Project
4# All rights reserved.
5#
6# Redistribution and use in source and binary forms, with or without
7# modification, are permitted provided that the following conditions
8# are met:
9# 1. Redistributions of source code must retain the above copyright
10#    notice, this list of conditions and the following disclaimer.
11# 2. Redistributions in binary form must reproduce the above copyright
12#    notice, this list of conditions and the following disclaimer in the
13#    documentation and/or other materials provided with the distribution.
14#
15# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18# ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25# SUCH DAMAGE.
26
27# System startup script run by init on autoboot
28# or after single-user.
29# Output and error are redirected to console by init,
30# and the console is the controlling terminal.
31
32# Note that almost all of the user-configurable behavior is no longer in
33# this file, but rather in /etc/defaults/rc.conf.  Please check that file
34# first before contemplating any changes here.  If you do need to change
35# this file for some reason, we would like to know about it.
36
37stty status '^T' 2> /dev/null
38
39# Set shell to ignore SIGINT (2), but not children;
40# shell catches SIGQUIT (3) and returns to single user.
41#
42trap : 2
43trap "echo 'Boot interrupted'; exit 1" 3
44
45HOME=/
46PATH=/sbin:/bin:/usr/sbin:/usr/bin
47export HOME PATH
48
49if [ "$1" = autoboot ]; then
50	autoboot=yes
51	_boot="faststart"
52	rc_fast=yes        # run_rc_command(): do fast booting
53else
54	autoboot=no
55	_boot="quietstart"
56fi
57
58_localbase=`/sbin/sysctl -n user.localbase 2> /dev/null`
59
60dlv=`/sbin/sysctl -n vfs.nfs.diskless_valid 2> /dev/null`
61if [ ${dlv:=0} -ne 0 -o -f /etc/diskless ]; then
62	sh /etc/rc.initdiskless
63fi
64
65# Run these after determining whether we are booting diskless in order
66# to minimize the number of files that are needed on a diskless system,
67# and to make the configuration file variables available to rc itself.
68#
69. /etc/rc.subr
70load_rc_config
71
72# If we receive a SIGALRM, re-source /etc/rc.conf; this allows rc.d
73# scripts to perform "boot-time configuration" including enabling and
74# disabling rc.d scripts which appear later in the boot order.
75trap "_rc_conf_loaded=false; load_rc_config" ALRM
76
77skip="-s nostart"
78if [ `/sbin/sysctl -n security.jail.jailed` -eq 1 ]; then
79	skip="$skip -s nojail"
80	if [ `/sbin/sysctl -n security.jail.vnet` -ne 1 ]; then
81		skip="$skip -s nojailvnet"
82	fi
83fi
84
85# If the firstboot sentinel doesn't exist, we want to skip firstboot scripts.
86if ! [ -e ${firstboot_sentinel} ]; then
87	skip_firstboot="-s firstboot"
88fi
89
90# Do a first pass to get everything up to $early_late_divider so that
91# we can do a second pass that includes $local_startup directories
92#
93unset system_rc
94find_system_scripts
95files=`rcorder ${skip} ${skip_firstboot} ${system_rc} 2>/dev/null`
96
97_rc_elem_done=' '
98for _rc_elem in ${files}; do
99	run_rc_script ${_rc_elem} ${_boot}
100	_rc_elem_done="${_rc_elem_done}${_rc_elem} "
101
102	case "$_rc_elem" in
103	*/${early_late_divider})	break ;;
104	esac
105done
106
107unset files local_rc system_rc
108
109# Now that disks are mounted, for each dir in $local_startup
110# search for init scripts that use the new rc.d semantics.
111#
112case ${local_startup} in
113[Nn][Oo] | '') ;;
114*)	find_local_scripts_new ;;
115esac
116
117# The firstboot sentinel might be on a newly mounted filesystem; look for it
118# again and unset skip_firstboot if we find it.
119if [ -e ${firstboot_sentinel} ]; then
120	skip_firstboot=""
121fi
122
123find_system_scripts
124files=`rcorder ${skip} ${skip_firstboot} ${system_rc} ${local_rc} 2>/dev/null`
125for _rc_elem in ${files}; do
126	case "$_rc_elem_done" in
127	*" $_rc_elem "*)	continue ;;
128	esac
129
130	run_rc_script ${_rc_elem} ${_boot}
131done
132
133# Remove the firstboot sentinel, and reboot if it was requested.
134# Be a bit paranoid about removing it to handle the common failure
135# modes since the consequence of failure can be big.
136# Note: this assumes firstboot_sentinel is on / when we have
137# a read-only /, or that it is on media that's writable.
138if [ -e ${firstboot_sentinel} ]; then
139	checkyesno root_rw_mount || mount -uw /
140	chflags -R 0 ${firstboot_sentinel}
141	rm -rf ${firstboot_sentinel}
142	if [ -e ${firstboot_sentinel}-reboot ]; then
143		chflags -R 0 ${firstboot_sentinel}-reboot
144		rm -rf ${firstboot_sentinel}-reboot
145		checkyesno root_rw_mount || mount -ur /
146		kill -INT 1
147	fi
148	checkyesno root_rw_mount || mount -ur /
149fi
150
151echo ''
152date
153exit 0
154