xref: /dragonfly/etc/rc.d/diskless (revision 8a7bdfea) 
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