1#!/bin/ksh -p 2# 3# CDDL HEADER START 4# 5# The contents of this file are subject to the terms of the 6# Common Development and Distribution License (the "License"). 7# You may not use this file except in compliance with the License. 8# 9# You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10# or http://www.opensolaris.org/os/licensing. 11# See the License for the specific language governing permissions 12# and limitations under the License. 13# 14# When distributing Covered Code, include this CDDL HEADER in each 15# file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16# If applicable, add the following below this CDDL HEADER, with the 17# fields enclosed by brackets "[]" replaced with your own identifying 18# information: Portions Copyright [yyyy] [name of copyright owner] 19# 20# CDDL HEADER END 21# 22 23# Copyright 2006 Sun Microsystems, Inc. All rights reserved. 24# Use is subject to license terms. 25 26# ident "%Z%%M% %I% %E% SMI" 27 28format=ufs 29ALT_ROOT= 30NO_AMD64= 31 32BOOT_ARCHIVE=platform/i86pc/boot_archive 33 34export PATH=$PATH:/usr/sbin:/usr/bin:/sbin 35 36# 37# Parse options 38# 39while getopts R: OPT 2> /dev/null 40do 41 case $OPT in 42 R) ALT_ROOT="$OPTARG" 43 if [ "$ALT_ROOT" != "/" ]; then 44 echo "Creating ram disk for $ALT_ROOT" 45 fi 46 ;; 47 ?) echo Usage: ${0##*/}: [-R \<root\>] 48 exit ;; 49 esac 50done 51 52if [ -x /usr/bin/mkisofs -o -x /tmp/bfubin/mkisofs ] ; then 53 format=isofs 54fi 55 56# 57# mkisofs on s8 doesn't support functionality used by GRUB boot. 58# Use ufs format for boot archive instead. 59# 60release=`uname -r` 61if [ "$release" = "5.8" ]; then 62 format=ufs 63fi 64 65shift `expr $OPTIND - 1` 66 67if [ $# -eq 1 ]; then 68 ALT_ROOT="$1" 69 echo "Creating ram disk for $ALT_ROOT" 70fi 71 72function cleanup 73{ 74 umount -f "$rdmnt" 2>/dev/null 75 lofiadm -d "$rdfile" 2>/dev/null 76 rm -fr "$rddir" 2> /dev/null 77} 78 79function getsize 80{ 81 # Estimate image size and add %10 overhead for ufs stuff. 82 # Note, we can't use du here in case we're on a filesystem, e.g. zfs, 83 # in which the disk usage is less than the sum of the file sizes. 84 # The nawk code 85 # 86 # {t += ($7 % 1024) ? (int($7 / 1024) + 1) * 1024 : $7} 87 # 88 # below rounds up the size of a file/directory, in bytes, to the 89 # next multiple of 1024. This mimics the behavior of ufs especially 90 # with directories. This results in a total size that's slightly 91 # bigger than if du was called on a ufs directory. 92 total_size=$(cd "/$ALT_ROOT"; find $filelist -ls 2>/dev/null | nawk ' 93 {t += ($7 % 1024) ? (int($7 / 1024) + 1) * 1024 : $7} 94 END {print int(t * 1.10 / 1024)}') 95} 96 97function create_ufs 98{ 99 # should we exclude amd64 binaries? 100 [ $is_amd64 -eq 0 ] && NO_AMD64="-name amd64 -prune" 101 102 103 mkfile ${total_size}k "$rdfile" 104 lofidev=`lofiadm -a "$rdfile"` 105 newfs $lofidev < /dev/null 2> /dev/null 106 mkdir "$rdmnt" 107 mount -F mntfs mnttab /etc/mnttab > /dev/null 2>&1 108 mount -o nologging $lofidev "$rdmnt" 109 110 # do the actual copy 111 cd "/$ALT_ROOT" 112 113 find $filelist -print $NO_AMD64 2> /dev/null | \ 114 cpio -pdum "$rdmnt" 2> /dev/null 115 umount "$rdmnt" 116 lofiadm -d "$rdfile" 117 rmdir "$rdmnt" 118 119 # Check if gzip exists in /usr/bin, so we only try to run gzip 120 # on systems that have gzip. Then run gzip out of the patch to 121 # pick it up from bfubin or something like that if needed. 122 # 123 if [ -x /usr/bin/gzip ] ; then 124 gzip -c "$rdfile" > "$ALT_ROOT/$BOOT_ARCHIVE-new" 125 else 126 cat "$rdfile" > "$ALT_ROOT/$BOOT_ARCHIVE-new" 127 fi 128} 129 130function create_isofs 131{ 132 # should we exclude amd64 binaries? 133 [ $is_amd64 = 0 ] && NO_AMD64="-m amd64" 134 135 # create image directory seed with graft points 136 mkdir "$rdmnt" 137 files= 138 isocmd="mkisofs -quiet -graft-points -dlrDJN -relaxed-filenames $NO_AMD64" 139 for path in $filelist 140 do 141 if [ -d "$ALT_ROOT/$path" ]; then 142 isocmd="$isocmd $path/=\"$ALT_ROOT/$path\"" 143 mkdir -p "$rdmnt/$path" 144 elif [ -f "$ALT_ROOT/$path" ]; then 145 files="$files $path" 146 fi 147 done 148 cd "/$ALT_ROOT" 149 find $files 2> /dev/null | cpio -pdum "$rdmnt" 2> /dev/null 150 isocmd="$isocmd \"$rdmnt\"" 151 rm -f "$errlog" 152 153 # Check if gzip exists in /usr/bin, so we only try to run gzip 154 # on systems that have gzip. Then run gzip out of the patch to 155 # pick it up from bfubin or something like that if needed. 156 # 157 if [ -x /usr/bin/gzip ] ; then 158 ksh -c "$isocmd" 2> "$errlog" | \ 159 gzip > "$ALT_ROOT/$BOOT_ARCHIVE-new" 160 else 161 ksh -c "$isocmd" 2> "$errlog" > "$ALT_ROOT/$BOOT_ARCHIVE-new" 162 fi 163 164 if [ -s "$errlog" ]; then 165 grep Error: "$errlog" >/dev/null 2>&1 166 if [ $? -eq 0 ]; then 167 grep Error: "$errlog" 168 rm -f "$ALT_ROOT/$BOOT_ARCHIVE-new" 169 fi 170 fi 171 rm -f "$errlog" 172} 173 174# 175# get filelist 176# 177filelist=`cat "$ALT_ROOT/boot/solaris/filelist.ramdisk"` 178if [ -f "$ALT_ROOT/etc/boot/solaris/filelist.ramdisk" ]; then 179 filelistI=`cat "$ALT_ROOT/etc/boot/solaris/filelist.ramdisk"` 180fi 181filelist=`echo $filelist $filelistI | sort -u` 182 183# 184# decide if cpu is amd64 capable 185# 186prtconf -v /devices | grep CPU_not_amd64 > /dev/null 2>&1 187is_amd64=$? 188 189scratch=tmp 190 191if [ $format = ufs ] ; then 192 # calculate image size 193 getsize 194 195 # check to see if there is sufficient space in tmpfs 196 # 197 tmp_free=`df -b /tmp | tail -1 | awk '{ printf ($2) }'` 198 (( tmp_free = tmp_free / 2 )) 199 200 if [ $total_size -gt $tmp_free ] ; then 201 # assumes we have enough scratch space on $ALT_ROOT 202 scratch="$ALT_ROOT" 203 fi 204fi 205 206rddir="/$scratch/create_ramdisk.$$.tmp" 207rdfile="$rddir/rd.file" 208rdmnt="$rddir/rd.mount" 209errlog="$rddir/rd.errlog" 210 211# make directory for temp files safely 212rm -rf "$rddir" 213mkdir "$rddir" 214 215# Clean up upon exit. 216trap 'cleanup' EXIT 217 218echo "updating $ALT_ROOT/$BOOT_ARCHIVE...this may take a minute" 219 220if [ $format = "ufs" ]; then 221 create_ufs 222else 223 create_isofs 224fi 225 226# sanity check the archive before moving it into place 227# the file type check also establishes that the file exists at all 228# 229ARCHIVE_SIZE=$(/bin/ls -l "$ALT_ROOT/$BOOT_ARCHIVE-new" | 230 nawk '{print int($5 / 1024)}') 231file "$ALT_ROOT/$BOOT_ARCHIVE-new" | grep gzip > /dev/null 232 233if [ $? = 1 ] && [ -x /usr/bin/gzip ] || [ $ARCHIVE_SIZE -lt 5000 ]; then 234 echo "update of $ALT_ROOT/$BOOT_ARCHIVE failed" 235 rm -rf "$rddir" 236 exit 1 237fi 238 239# 240# For the diskless case, hardlink archive to /boot to make it 241# visible via tftp. /boot is lofs mounted under /tftpboot/<hostname>. 242# NOTE: this script must work on both client and server 243# 244grep "[ ]/[ ]*nfs[ ]" "$ALT_ROOT/etc/vfstab" > /dev/null 245if [ $? = 0 ]; then 246 mv "$ALT_ROOT/$BOOT_ARCHIVE-new" "$ALT_ROOT/$BOOT_ARCHIVE" 247 rm -f "$ALT_ROOT/boot/boot_archive" 248 ln "$ALT_ROOT/$BOOT_ARCHIVE" "$ALT_ROOT/boot/boot_archive" 249 rm -rf "$rddir" 250 exit 251fi 252 253lockfs -f "/$ALT_ROOT" 254mv "$ALT_ROOT/$BOOT_ARCHIVE-new" "$ALT_ROOT/$BOOT_ARCHIVE" 255lockfs -f "/$ALT_ROOT" 256 257rm -rf "$rddir" 258