resolv revision 108191 
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: head/etc/rc.d/resolv 108191 2002-12-22 22:18:41Z dillon $
28#
29
30# PROVIDE: diskless
31# REQUIRE: initdiskless rcconf mountcritlocal
32# BEFORE: addswap random
33# KEYWORD: FreeBSD
34
35dlv=`/sbin/sysctl -n vfs.nfs.diskless_valid 2> /dev/null`
36[ ${dlv:=0} -eq 0 ] && exit 0
37
38name="diskless2"
39
40# Provide a function for normalizing the mounting of memory
41# filesystems.  This should allow the rest of the code here to remain
42# as close as possible between 5-current and 4-stable.
43#   $1 = size
44#   $2 = mount point
45#   $3 = (optional) bytes-per-inode
46mount_md() {
47	if [ -n "$3" ]; then
48		bpi="-i $3"
49	fi
50	/sbin/mdmfs $bpi -s $1 -M md $2
51}
52
53# If there is a global system configuration file, suck it in.
54#
55if [ -r /etc/rc.subr ]; then
56	. /etc/rc.subr
57	load_rc_config $name
58elif [ -r /etc/defaults/rc.conf ]; then
59	. /etc/defaults/rc.conf
60	source_rc_confs
61elif [ -r /etc/rc.conf ]; then
62	. /etc/rc.conf
63fi
64
65# If we do not have a writable /var, create a memory
66# filesystem for /var.  We don't have /usr yet so
67# use mkdir instead of touch to test.  We want mount
68# to record its mounts so we have to make sure /var/db
69# exists before doing the mount -a.
70#
71if (/bin/mkdir /var/.diskless 2> /dev/null); then
72        rmdir /var/.diskless
73else
74	echo "+++ mount_md of /var"
75	mount_md ${varsize:=32m} /var
76fi
77
78if [ ! -d /var/db ]; then
79	mkdir /var/db
80fi
81
82# Now we need the rest of our mounts, particularly /usr
83#
84mount -a       # chown and chgrp are in /usr
85
86# Populate /var
87#
88echo "+++ populate /var using /etc/mtree/BSD.var.dist"
89/usr/sbin/mtree -deU -f /etc/mtree/BSD.var.dist -p /var > /dev/null
90case ${sendmail_enable} in
91[Nn][Oo][Nn][Ee])
92	;;
93*)
94	/usr/sbin/mtree -deU -f /etc/mtree/BSD.sendmail.dist -p / > /dev/null
95	;;
96esac
97
98echo "+++ create log files based on the contents of /etc/newsyslog.conf"
99LOGFILES=`/usr/bin/awk '$1 != "#" { printf "%s ", $1 } ' /etc/newsyslog.conf`
100if [ -n "$LOGFILES" ]; then
101	/usr/bin/touch $LOGFILES
102fi
103
104echo "+++ create lastlog"
105/usr/bin/touch /var/log/lastlog
106
107# Make sure our aliases database is uptodate, the aliases may have
108# been overriden in /conf.
109#
110/usr/bin/newaliases
111
112# XXX make sure to create one dir for each printer as requested by lpd
113#
114# If we do not have a writable /tmp, create a memory
115# filesystem for /tmp.  If /tmp is a symlink (e.g. to /var/tmp,
116# then it should already be writable).
117#
118if (/bin/mkdir /tmp/.diskless 2> /dev/null); then
119	rmdir /tmp/.diskless
120else
121	if [ -h /tmp ]; then
122		echo "*** /tmp is a symlink to a non-writable area!"
123		echo "dropping into shell, ^D to continue anyway."
124		/bin/sh
125	else
126		mount_md ${tmpsize:=20480} /tmp
127		chmod 01777 /tmp
128	fi
129fi
130
131if sysctl vfs.devfs.generation > /dev/null 2>&1 ; then
132	# we have DEVFS, no worries...
133	true
134elif (/bin/mkdir /dev/.diskless 2> /dev/null); then
135	# if /dev is writable assume it has already been populated
136	# via rc.diskless1
137	#
138	rmdir /dev/.diskless
139else
140	(cd /; find -x dev | cpio -o -H newc) > /tmp/dev.tmp
141	mount_md 4096 /dev 512
142	(cd /; cpio -i -H newc -d < /tmp/dev.tmp)
143	rm -f /tmp/dev.tmp
144fi
145
146# generate our hostname
147#
148if [ -z "`hostname -s`" ]; then
149        hostname=`/usr/bin/kenv dhcp.host-name`
150        hostname $hostname
151	echo "Hostname is $hostname"
152fi
153
154# if the info is available via dhcp/kenv
155# build the resolv.conf
156#
157if [ ! -e /etc/resolv.conf ]; then
158        echo domain `/usr/bin/kenv dhcp.domain-name` > /etc/resolv.conf
159
160        set `/usr/bin/kenv dhcp.domain-name-servers`
161        for ns in `IFS=','; echo $*`; do
162                echo nameserver $ns >> /etc/resolv.conf;
163        done
164fi
165
166