1#!/bin/sh 2# 3# Copyright (c) 1999 Matt Dillon 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# $FreeBSD: src/etc/rc.d/diskless,v 1.25 2003/02/15 16:34:14 jhay Exp $ 28# $DragonFly: src/etc/rc.d/diskless,v 1.7 2007/05/13 22:25:41 swildner Exp $ 29# 30 31# PROVIDE: diskless 32# REQUIRE: initdiskless rcconf mountcritlocal 33# BEFORE: addswap random 34 35if [ -r /etc/rc.subr ]; then 36 . /etc/rc.subr 37 dummy_rc_command "$1" 38fi 39 40dlv=`/sbin/sysctl -n vfs.nfs.diskless_valid 2> /dev/null` 41[ ${dlv:=0} -eq 0 ] && exit 0 42 43name="diskless" 44 45# Provide a function for normalizing the mounting of memory filesystems. 46# $1 = size 47# $2 = mount point 48# $3 = (optional) bytes-per-inode 49mount_md() { 50 if [ -n "$3" ]; then 51 bpi="-i $3" 52 fi 53 /sbin/mount_mfs $bpi -s $1 swap $2 54} 55 56# If there is a global system configuration file, suck it in. 57# 58if [ -r /etc/rc.subr ]; then 59 . /etc/rc.subr 60 load_rc_config $name 61elif [ -r /etc/defaults/rc.conf ]; then 62 . /etc/defaults/rc.conf 63 source_rc_confs 64elif [ -r /etc/rc.conf ]; then 65 . /etc/rc.conf 66fi 67 68# If we do not have a writable /var, create a memory 69# filesystem for /var. We don't have /usr yet so 70# use mkdir instead of touch to test. We want mount 71# to record its mounts so we have to make sure /var/db 72# exists before doing the mount -a. 73# 74if (/bin/mkdir /var/.diskless 2> /dev/null); then 75 rmdir /var/.diskless 76else 77 echo "+++ mount_md of /var" 78 mount_md ${varsize:=32768} /var 79fi 80 81if [ ! -d /var/db ]; then 82 mkdir /var/db 83fi 84 85# Now we need the rest of our mounts, particularly /usr 86# 87mount -a # chown and chgrp are in /usr 88 89# Populate /var 90# 91echo "+++ populate /var using /etc/mtree/BSD.var.dist" 92/usr/sbin/mtree -deU -f /etc/mtree/BSD.var.dist -p /var > /dev/null 93case ${sendmail_enable} in 94[Nn][Oo][Nn][Ee]) 95 ;; 96*) 97 /usr/sbin/mtree -deU -f /etc/mtree/BSD.sendmail.dist -p / > /dev/null 98 ;; 99esac 100 101echo "+++ create log files based on the contents of /etc/newsyslog.conf" 102LOGFILES=`/usr/bin/awk '$1 != "#" { printf "%s ", $1 } ' /etc/newsyslog.conf` 103if [ -n "$LOGFILES" ]; then 104 /usr/bin/touch $LOGFILES 105fi 106 107echo "+++ create lastlog" 108/usr/bin/touch /var/log/lastlog 109 110# Make sure our aliases database is uptodate, the aliases may have 111# been overridden in /conf. 112# 113/usr/bin/newaliases 114 115# XXX make sure to create one dir for each printer as requested by lpd 116# 117# If we do not have a writable /tmp, create a memory 118# filesystem for /tmp. If /tmp is a symlink (e.g. to /var/tmp, 119# then it should already be writable). 120# 121if (/bin/mkdir /tmp/.diskless 2> /dev/null); then 122 rmdir /tmp/.diskless 123else 124 if [ -h /tmp ]; then 125 echo "*** /tmp is a symlink to a non-writable area!" 126 echo "dropping into shell, ^D to continue anyway." 127 /bin/sh 128 else 129 mount_md ${tmpsize:=20480} /tmp 130 chmod 01777 /tmp 131 fi 132fi 133 134if sysctl vfs.devfs.generation > /dev/null 2>&1 ; then 135 # we have DEVFS, no worries... 136 true 137elif (/bin/mkdir /dev/.diskless 2> /dev/null); then 138 # if /dev is writable assume it has already been populated 139 # via rc.d/diskless 140 # 141 rmdir /dev/.diskless 142else 143 (cd /; find -x dev | cpio -o -H newc) > /tmp/dev.tmp 144 mount_md 4096 /dev 512 145 (cd /; cpio -i -H newc -d < /tmp/dev.tmp) 146 rm -f /tmp/dev.tmp 147fi 148 149# generate our hostname 150# 151if [ -z "`hostname -s`" ]; then 152 hostname=`/usr/bin/kenv dhcp.host-name` 153 hostname $hostname 154 echo "Hostname is $hostname" 155fi 156 157# if the info is available via dhcp/kenv 158# build the resolv.conf 159# 160if [ ! -e /etc/resolv.conf ]; then 161 echo domain `/usr/bin/kenv dhcp.domain-name` > /etc/resolv.conf 162 163 set `/usr/bin/kenv dhcp.domain-name-servers` 164 for ns in `IFS=','; echo $*`; do 165 echo nameserver $ns >> /etc/resolv.conf; 166 done 167fi 168