d5c04c6f99
improve boot performance; this produces arguably astonishing (non-)results if /etc/rc.conf is modified during the boot process. Since performance considerations make it infeasible to automatically detect if the cached /etc/rc.conf parameters should be invalidated, provide a mechanism for explicitly requesting that /etc/rc.conf be reloaded: Catch SIGALRM and reload /etc/rc.conf if it is received. Discussed on: freebsd-rc MFC after: 3 days
147 lines
4.5 KiB
Bash
147 lines
4.5 KiB
Bash
#!/bin/sh
|
|
#
|
|
# Copyright (c) 2000-2004 The FreeBSD Project
|
|
# All rights reserved.
|
|
#
|
|
# Redistribution and use in source and binary forms, with or without
|
|
# modification, are permitted provided that the following conditions
|
|
# are met:
|
|
# 1. Redistributions of source code must retain the above copyright
|
|
# notice, this list of conditions and the following disclaimer.
|
|
# 2. Redistributions in binary form must reproduce the above copyright
|
|
# notice, this list of conditions and the following disclaimer in the
|
|
# documentation and/or other materials provided with the distribution.
|
|
#
|
|
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
|
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
|
# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
# SUCH DAMAGE.
|
|
#
|
|
# @(#)rc 5.27 (Berkeley) 6/5/91
|
|
# $FreeBSD$
|
|
#
|
|
|
|
# System startup script run by init on autoboot
|
|
# or after single-user.
|
|
# Output and error are redirected to console by init,
|
|
# and the console is the controlling terminal.
|
|
|
|
# Note that almost all of the user-configurable behavior is no longer in
|
|
# this file, but rather in /etc/defaults/rc.conf. Please check that file
|
|
# first before contemplating any changes here. If you do need to change
|
|
# this file for some reason, we would like to know about it.
|
|
|
|
stty status '^T' 2> /dev/null
|
|
|
|
# Set shell to ignore SIGINT (2), but not children;
|
|
# shell catches SIGQUIT (3) and returns to single user.
|
|
#
|
|
trap : 2
|
|
trap "echo 'Boot interrupted'; exit 1" 3
|
|
|
|
HOME=/
|
|
PATH=/sbin:/bin:/usr/sbin:/usr/bin
|
|
export HOME PATH
|
|
|
|
if [ "$1" = autoboot ]; then
|
|
autoboot=yes
|
|
_boot="faststart"
|
|
rc_fast=yes # run_rc_command(): do fast booting
|
|
else
|
|
autoboot=no
|
|
_boot="quietstart"
|
|
fi
|
|
|
|
dlv=`/sbin/sysctl -n vfs.nfs.diskless_valid 2> /dev/null`
|
|
if [ ${dlv:=0} -ne 0 -o -f /etc/diskless ]; then
|
|
sh /etc/rc.initdiskless
|
|
fi
|
|
|
|
# Run these after determining whether we are booting diskless in order
|
|
# to minimize the number of files that are needed on a diskless system,
|
|
# and to make the configuration file variables available to rc itself.
|
|
#
|
|
. /etc/rc.subr
|
|
load_rc_config 'XXX'
|
|
|
|
# If we receive a SIGALRM, re-source /etc/rc.conf; this allows rc.d
|
|
# scripts to perform "boot-time configuration" including enabling and
|
|
# disabling rc.d scripts which appear later in the boot order.
|
|
trap "_rc_conf_loaded=false; load_rc_config 'XXX'" ALRM
|
|
|
|
skip="-s nostart"
|
|
if [ `/sbin/sysctl -n security.jail.jailed` -eq 1 ]; then
|
|
skip="$skip -s nojail"
|
|
if [ "$early_late_divider" = "FILESYSTEMS" ]; then
|
|
early_late_divider=NETWORKING
|
|
fi
|
|
if [ `/sbin/sysctl -n security.jail.vnet` -ne 1 ]; then
|
|
skip="$skip -s nojailvnet"
|
|
fi
|
|
fi
|
|
|
|
# If the firstboot sentinel doesn't exist, we want to skip firstboot scripts.
|
|
if ! [ -e ${firstboot_sentinel} ]; then
|
|
skip_firstboot="-s firstboot"
|
|
fi
|
|
|
|
# Do a first pass to get everything up to $early_late_divider so that
|
|
# we can do a second pass that includes $local_startup directories
|
|
#
|
|
files=`rcorder ${skip} ${skip_firstboot} /etc/rc.d/* 2>/dev/null`
|
|
|
|
_rc_elem_done=' '
|
|
for _rc_elem in ${files}; do
|
|
run_rc_script ${_rc_elem} ${_boot}
|
|
_rc_elem_done="${_rc_elem_done}${_rc_elem} "
|
|
|
|
case "$_rc_elem" in
|
|
*/${early_late_divider}) break ;;
|
|
esac
|
|
done
|
|
|
|
unset files local_rc
|
|
|
|
# Now that disks are mounted, for each dir in $local_startup
|
|
# search for init scripts that use the new rc.d semantics.
|
|
#
|
|
case ${local_startup} in
|
|
[Nn][Oo] | '') ;;
|
|
*) find_local_scripts_new ;;
|
|
esac
|
|
|
|
# The firstboot sentinel might be on a newly mounted filesystem; look for it
|
|
# again and unset skip_firstboot if we find it.
|
|
if [ -e ${firstboot_sentinel} ]; then
|
|
skip_firstboot=""
|
|
fi
|
|
|
|
files=`rcorder ${skip} ${skip_firstboot} /etc/rc.d/* ${local_rc} 2>/dev/null`
|
|
for _rc_elem in ${files}; do
|
|
case "$_rc_elem_done" in
|
|
*" $_rc_elem "*) continue ;;
|
|
esac
|
|
|
|
run_rc_script ${_rc_elem} ${_boot}
|
|
done
|
|
|
|
# Remove the firstboot sentinel, and reboot if it was requested.
|
|
if [ -e ${firstboot_sentinel} ]; then
|
|
rm ${firstboot_sentinel}
|
|
if [ -e ${firstboot_sentinel}-reboot ]; then
|
|
rm ${firstboot_sentinel}-reboot
|
|
kill -INT 1
|
|
fi
|
|
fi
|
|
|
|
echo ''
|
|
date
|
|
exit 0
|