xref: /dragonfly/etc/rc.d/diskless (revision 9f7604d7) 
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
48mount_md() {
49	/sbin/mount_tmpfs -s $1 tmpfs $2
50}
51
52# If there is a global system configuration file, suck it in.
53#
54if [ -r /etc/rc.subr ]; then
55	. /etc/rc.subr
56	load_rc_config $name
57elif [ -r /etc/defaults/rc.conf ]; then
58	. /etc/defaults/rc.conf
59	source_rc_confs
60elif [ -r /etc/rc.conf ]; then
61	. /etc/rc.conf
62fi
63
64# If we do not have a writable /var, create a memory
65# filesystem for /var.  We don't have /usr yet so
66# use mkdir instead of touch to test.  We want mount
67# to record its mounts so we have to make sure /var/db
68# exists before doing the mount -a.
69#
70if (/bin/mkdir /var/.diskless 2> /dev/null); then
71        rmdir /var/.diskless
72else
73	echo "+++ mount_md of /var"
74	mount_md ${varsize:=16M} /var
75fi
76
77if [ ! -d /var/db ]; then
78	mkdir /var/db
79fi
80
81# Now we need the rest of our mounts, particularly /usr
82#
83mount -a       # chown and chgrp are in /usr
84
85# Populate /var
86#
87echo "+++ populate /var using /etc/mtree/BSD.var.dist"
88/usr/sbin/mtree -deU -f /etc/mtree/BSD.var.dist -p /var > /dev/null
89case ${sendmail_enable} in
90[Nn][Oo][Nn][Ee])
91	;;
92*)
93	/usr/sbin/mtree -deU -f /etc/mtree/BSD.sendmail.dist -p / > /dev/null
94	;;
95esac
96
97echo "+++ create log files based on the contents of /etc/newsyslog.conf"
98LOGFILES=`/usr/bin/awk '$1 != "#" { printf "%s ", $1 } ' /etc/newsyslog.conf`
99if [ -n "$LOGFILES" ]; then
100	/usr/bin/touch $LOGFILES
101fi
102
103echo "+++ create lastlog"
104/usr/bin/touch /var/log/lastlog
105
106# XXX make sure to create one dir for each printer as requested by lpd
107#
108# If we do not have a writable /tmp, create a memory
109# filesystem for /tmp.  If /tmp is a symlink (e.g. to /var/tmp,
110# then it should already be writable).
111#
112if (/bin/mkdir /tmp/.diskless 2> /dev/null); then
113	rmdir /tmp/.diskless
114else
115	if [ -h /tmp ]; then
116		echo "*** /tmp is a symlink to a non-writable area!"
117		echo "dropping into shell, ^D to continue anyway."
118		/bin/sh
119	else
120		mount_md ${tmpsize:=10M} /tmp
121		chmod 01777 /tmp
122	fi
123fi
124
125# generate our hostname
126#
127if [ -z "`hostname -s`" ]; then
128	hostname=`/usr/bin/kenv dhcp.host-name`
129	hostname $hostname
130	echo "Hostname is $hostname"
131fi
132
133# if the info is available via dhcp/kenv
134# build the resolv.conf
135#
136if [ ! -e /etc/resolv.conf ]; then
137	echo domain `/usr/bin/kenv dhcp.domain-name` > /etc/resolv.conf
138
139	set `/usr/bin/kenv dhcp.domain-name-servers`
140	for ns in `IFS=','; echo $*`; do
141		echo nameserver $ns >> /etc/resolv.conf;
142	done
143fi
144