build_usb.sh

   1 #!/usr/bin/bash
   2
   3 set -e
   4
   5 #
   6 # This file and its contents are supplied under the terms of the
   7 # Common Development and Distribution License ("CDDL"), version 1.0.
   8 # You may only use this file in accordance with the terms of version
   9 # 1.0 of the CDDL.
  10 #
  11 # A full copy of the text of the CDDL should have accompanied this
  12 # source.  A copy of the CDDL is also available via the Internet at
  13 # http://www.illumos.org/license/CDDL.
  14 #
  15
  16 #
  17 # Copyright 2017 OmniTI Computer Consulting, Inc. All rights reserved.
  18 #
  19
  20 #
  21 # Build a USB installer using the Kayak tools.
  22 #
  23
  24 if [[ `id -u` != "0" ]]; then
  25         echo "You must be root to run this script."
  26         exit 1
  27 fi
  28
  29 if [[ -z $BUILDSEND_MP ]]; then
  30         echo "Using /rpool/kayak_image for BUILDSEND_MP"
  31         BUILDSEND_MP=/rpool/kayak_image
  32 fi
  33
  34 if [[ -z $VERSION ]]; then
  35         echo "\$VERSION not set" >&2
  36         exit 1
  37 fi
  38
  39 # Many of these depend on sufficient space in /tmp by default.  Please
  40 # modify as you deem appropriate.
  41 TMPDIR=${TMPDIR-/tmp}
  42 PROTO=${TMPDIR}/proto
  43 KAYAK_ROOTBALL=$BUILDSEND_MP/miniroot.gz
  44 KAYAK_ROOT=${TMPDIR}/miniroot.$$
  45 KR_FILE=${TMPDIR}/kr.$$
  46 MNT=/mnt
  47 UFS_LOFI=${TMPDIR}/boot_archive
  48 LOFI_SIZE=2000M
  49 DST_IMG=${BUILDSEND_MP}/${VERSION}.img
  50 ZFS_IMG=$BUILDSEND_MP/kayak_${VERSION}.zfs.bz2
  51
  52 cleanup() {
  53     echo "cleaning up"
  54     set +e
  55     umount $MNT 2>/dev/null
  56     umount $KAYAK_ROOT 2>/dev/null
  57     rm -rf $PROTO $UFS_LOFI $KR_FILE $KAYAK_ROOT
  58     lofiadm -d $DST_IMG 2>/dev/null
  59     lofiadm -d $LOFI_PATH 2>/dev/null
  60     lofiadm -d $LOFI_RPATH 2>/dev/null
  61     lofiadm -d $KR_FILE 2>/dev/null
  62 }
  63 trap cleanup 0 INT TERM
  64
  65 # Create a UFS lofi file and mount the UFS filesystem in $MNT.  This will
  66 # form the boot_archive for the USB.
  67 mkfile $LOFI_SIZE $UFS_LOFI
  68 LOFI_PATH=`lofiadm -a $UFS_LOFI`
  69 echo 'y' | newfs $LOFI_PATH
  70 mount $LOFI_PATH $MNT
  71
  72 # Clone the already-created Kayak miniroot and copy it into both $MNT, and
  73 # into a now-created $PROTO. $PROTO will form the directory that gets
  74 # sprayed onto the USB.
  75 gunzip -c $KAYAK_ROOTBALL > $KR_FILE
  76 LOFI_RPATH=`lofiadm -a $KR_FILE`
  77 mkdir $KAYAK_ROOT
  78 mount $LOFI_RPATH $KAYAK_ROOT
  79 tar -cf - -C $KAYAK_ROOT . | tar -xf - -C $MNT
  80 mkdir $PROTO
  81 tar -cf - -C $KAYAK_ROOT . | tar -xf - -C $PROTO
  82 umount $KAYAK_ROOT
  83 rmdir $KAYAK_ROOT
  84 lofiadm -d $LOFI_RPATH
  85 rm $KR_FILE
  86
  87 #
  88 # Put additional goodies into the boot-archive on $MNT, which is
  89 # what'll be / (via ramdisk) once one boots the USB.
  90 #
  91
  92 # The full ZFS image (also already-created) for actual installation.
  93 cp $ZFS_IMG $MNT/root/.
  94
  95 # A cheesy way to get the boot menu to appear at boot time.
  96 cp -p ./takeover-console $MNT/kayak/.
  97 cat <<EOF > $MNT/root/.bashrc
  98 export PATH=/usr/bin:/usr/sbin:/sbin
  99 export HOME=/root
 100 EOF
 101
 102 # Refresh the devices on the miniroot.
 103 devfsadm -r $MNT
 104
 105 #
 106 # The USB's miniroot is going to be larger than the PXE miniroot.  To that
 107 # end, some files not listed in the exception list do need to show up on
 108 # the miniroot.  Use PREBUILT_ILLUMOS if available, or the current system
 109 # if not.
 110 #
 111 from_one_to_other() {
 112     dir=$1
 113     if [[ -z $PREBUILT_ILLUMOS || ! -d $PREBUILT_ILLUMOS/proto/root_i386/$dir ]]
 114     then
 115         FROMDIR=/
 116     else
 117         FROMDIR=$PREBUILT_ILLUMOS/proto/root_i386
 118     fi
 119
 120     shift
 121     tar -cf - -C $FROMDIR/$dir ${@:-.} | tar -xf - -C $MNT/$dir
 122 }
 123
 124 # Add from_one_to_other for any directory {file|subdir file|subdir ...} you need
 125 from_one_to_other usr/share/lib/zoneinfo
 126 from_one_to_other usr/share/lib/keytables
 127 from_one_to_other usr/share/lib/terminfo
 128 from_one_to_other usr/gnu/share/terminfo
 129 from_one_to_other usr/sbin ping
 130 from_one_to_other usr/bin netstat
 131
 132 cat <<EOF > $PROTO/boot/loader.conf.local
 133 loader_menu_title="Welcome to the unleashed installer"
 134 autoboot_delay=5
 135 console="ttya,text"
 136 EOF
 137
 138 #
 139 # Okay, we've populated the new miniroot.  Close it up and install it on $PROTO
 140 # as the boot archive.
 141 #
 142 umount $MNT
 143 lofiadm -d $LOFI_PATH
 144 gzip -c $UFS_LOFI > $PROTO/platform/i86pc/amd64/boot_archive
 145 digest -a sha1 $UFS_LOFI > $PROTO/platform/i86pc/amd64/boot_archive.hash
 146 rm -rf $PROTO/{usr,bin,sbin,lib,kernel}
 147 protosize=$(du -sm $PROTO/.|cut -f1)
 148 imagesize=$((protosize * 11/10))
 149
 150 rm -f "${DST_IMG}"
 151 mkfile -n ${imagesize}M "${DST_IMG}"
 152 devs="$(lofiadm -la "${DST_IMG}")"
 153 rdevs="${devs/dsk/rdsk}"
 154 s0devs="${devs/p0/s0}"
 155 rs0devs="${rdevs/p0/s0}"
 156 rs2devs="${rdevs/p0/s2}"
 157 fdisk -B "${rdevs}"
 158 prtvtoc "${rs2devs}" | nawk '
 159 /^[^\*]/ { r = $1; for(n = 1; n <= NF; n++) vtoc[r,n] = $n }
 160 END {
 161 vtoc[0,1] = 0;
 162 vtoc[0,2] = 2;
 163 vtoc[0,3] = 00;
 164 vtoc[0,4] = vtoc[8,6] + 1;
 165 vtoc[0,5] = vtoc[2,6] - vtoc[8,6];
 166 vtoc[0,6] = vtoc[2,6];
 167 printf("\t%d\t%d\t%02d\t%d\t%d\t%d\n",
 168         vtoc[0,1], vtoc[0,2], vtoc[0,3], vtoc[0,4], vtoc[0,5], vtoc[0,6]);
 169 printf("\t%d\t%d\t%02d\t%d\t%d\t%d\n",
 170         vtoc[2,1], vtoc[2,2], vtoc[2,3], vtoc[2,4], vtoc[2,5], vtoc[2,6]);
 171 printf("\t%d\t%d\t%02d\t%d\t%d\t%d\n",
 172         vtoc[8,1], vtoc[8,2], vtoc[8,3], vtoc[8,4], vtoc[8,5], vtoc[8,6]);
 173 }' | fmthard -s- "${rs2devs}"
 174 # newfs doesn't ask questions if stdin isn't a tty.
 175 newfs "${rs0devs}" </dev/null
 176 mount -o nologging "${s0devs}" $MNT
 177 tar cf - -C $PROTO . | tar xf - -C $MNT
 178 installboot -mf "${MNT}/boot/pmbr" "${MNT}/boot/gptzfsboot" "${rs0devs}"
 179
 180 chmod 0444 $DST_IMG
 181 echo "$DST_IMG is ready"
 182 trap '' 0
 183 cleanup || true