etc/rc.d/diskless

   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 1.5 2005/11/19 21:47:32 swildner Exp $
  29 #
  30
  31 # PROVIDE: diskless
  32 # REQUIRE: initdiskless rcconf mountcritlocal
  33 # BEFORE: addswap random
  34
  35 if [ -r /etc/rc.subr ]; then
  36     . /etc/rc.subr
  37     dummy_rc_command "$1"
  38 fi
  39
  40 dlv=`/sbin/sysctl -n vfs.nfs.diskless_valid 2> /dev/null`
  41 [ ${dlv:=0} -eq 0 ] && exit 0
  42
  43 name="diskless2"
  44
  45 # Provide a function for normalizing the mounting of memory
  46 # filesystems.  This should allow the rest of the code here to remain
  47 # as close as possible between 5-current and 4-stable.
  48 #   $1 = size
  49 #   $2 = mount point
  50 #   $3 = (optional) bytes-per-inode
  51 mount_md() {
  52         if [ -n "$3" ]; then
  53                 bpi="-i $3"
  54         fi
  55         /sbin/mdmfs $bpi -s $1 -M md $2
  56 }
  57
  58 # If there is a global system configuration file, suck it in.
  59 #
  60 if [ -r /etc/rc.subr ]; then
  61         . /etc/rc.subr
  62         load_rc_config $name
  63 elif [ -r /etc/defaults/rc.conf ]; then
  64         . /etc/defaults/rc.conf
  65         source_rc_confs
  66 elif [ -r /etc/rc.conf ]; then
  67         . /etc/rc.conf
  68 fi
  69
  70 # If we do not have a writable /var, create a memory
  71 # filesystem for /var.  We don't have /usr yet so
  72 # use mkdir instead of touch to test.  We want mount
  73 # to record its mounts so we have to make sure /var/db
  74 # exists before doing the mount -a.
  75 #
  76 if (/bin/mkdir /var/.diskless 2> /dev/null); then
  77         rmdir /var/.diskless
  78 else
  79         echo "+++ mount_md of /var"
  80         mount_md ${varsize:=32m} /var
  81 fi
  82
  83 if [ ! -d /var/db ]; then
  84         mkdir /var/db
  85 fi
  86
  87 # Now we need the rest of our mounts, particularly /usr
  88 #
  89 mount -a       # chown and chgrp are in /usr
  90
  91 # Populate /var
  92 #
  93 echo "+++ populate /var using /etc/mtree/BSD.var.dist"
  94 /usr/sbin/mtree -deU -f /etc/mtree/BSD.var.dist -p /var > /dev/null
  95 case ${sendmail_enable} in
  96 [Nn][Oo][Nn][Ee])
  97         ;;
  98 *)
  99         /usr/sbin/mtree -deU -f /etc/mtree/BSD.sendmail.dist -p / > /dev/null
 100         ;;
 101 esac
 102
 103 echo "+++ create log files based on the contents of /etc/newsyslog.conf"
 104 LOGFILES=`/usr/bin/awk '$1 != "#" { printf "%s ", $1 } ' /etc/newsyslog.conf`
 105 if [ -n "$LOGFILES" ]; then
 106         /usr/bin/touch $LOGFILES
 107 fi
 108
 109 echo "+++ create lastlog"
 110 /usr/bin/touch /var/log/lastlog
 111
 112 # Make sure our aliases database is uptodate, the aliases may have
 113 # been overriden in /conf.
 114 #
 115 /usr/bin/newaliases
 116
 117 # XXX make sure to create one dir for each printer as requested by lpd
 118 #
 119 # If we do not have a writable /tmp, create a memory
 120 # filesystem for /tmp.  If /tmp is a symlink (e.g. to /var/tmp,
 121 # then it should already be writable).
 122 #
 123 if (/bin/mkdir /tmp/.diskless 2> /dev/null); then
 124         rmdir /tmp/.diskless
 125 else
 126         if [ -h /tmp ]; then
 127                 echo "*** /tmp is a symlink to a non-writable area!"
 128                 echo "dropping into shell, ^D to continue anyway."
 129                 /bin/sh
 130         else
 131                 mount_md ${tmpsize:=20480} /tmp
 132                 chmod 01777 /tmp
 133         fi
 134 fi
 135
 136 if sysctl vfs.devfs.generation > /dev/null 2>&1 ; then
 137         # we have DEVFS, no worries...
 138         true
 139 elif (/bin/mkdir /dev/.diskless 2> /dev/null); then
 140         # if /dev is writable assume it has already been populated
 141         # via rc.diskless1
 142         #
 143         rmdir /dev/.diskless
 144 else
 145         (cd /; find -x dev | cpio -o -H newc) > /tmp/dev.tmp
 146         mount_md 4096 /dev 512
 147         (cd /; cpio -i -H newc -d < /tmp/dev.tmp)
 148         rm -f /tmp/dev.tmp
 149 fi
 150
 151 # generate our hostname
 152 #
 153 if [ -z "`hostname -s`" ]; then
 154         hostname=`/bin/kenv dhcp.host-name`
 155         hostname $hostname
 156         echo "Hostname is $hostname"
 157 fi
 158
 159 # if the info is available via dhcp/kenv
 160 # build the resolv.conf
 161 #
 162 if [ ! -e /etc/resolv.conf ]; then
 163         echo domain `/bin/kenv dhcp.domain-name` > /etc/resolv.conf
 164
 165         set `/bin/kenv dhcp.domain-name-servers`
 166         for ns in `IFS=','; echo $*`; do
 167                 echo nameserver $ns >> /etc/resolv.conf;
 168         done
 169 fi
 170