create_ramdisk.ksh revision 9632cfad671ee03057c5878b18702ea3b53be47d
#!/bin/ksh -p
#
# CDDL HEADER START
#
# The contents of this file are subject to the terms of the
# Common Development and Distribution License (the "License").
# You may not use this file except in compliance with the License.
#
# You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
# or http://www.opensolaris.org/os/licensing.
# See the License for the specific language governing permissions
# and limitations under the License.
#
# When distributing Covered Code, include this CDDL HEADER in each
# file and include the License file at usr/src/OPENSOLARIS.LICENSE.
# If applicable, add the following below this CDDL HEADER, with the
# fields enclosed by brackets "[]" replaced with your own identifying
# information: Portions Copyright [yyyy] [name of copyright owner]
#
# CDDL HEADER END
#
# Copyright 2006 Sun Microsystems, Inc. All rights reserved.
# Use is subject to license terms.
# ident "%Z%%M% %I% %E% SMI"
format=ufs
ALT_ROOT=
NO_AMD64=
BOOT_ARCHIVE=platform/i86pc/boot_archive
export PATH=$PATH:/usr/sbin:/usr/bin:/sbin
#
# Parse options
#
while getopts R: OPT 2> /dev/null
do
case $OPT in
R) ALT_ROOT="$OPTARG"
if [ "$ALT_ROOT" != "/" ]; then
echo "Creating ram disk for $ALT_ROOT"
fi
;;
?) echo Usage: ${0##*/}: [-R \<root\>]
exit ;;
esac
done
if [ -x /usr/bin/mkisofs -o -x /tmp/bfubin/mkisofs ] ; then
format=isofs
fi
#
# mkisofs on s8 doesn't support functionality used by GRUB boot.
# Use ufs format for boot archive instead.
#
release=`uname -r`
if [ "$release" = "5.8" ]; then
format=ufs
fi
shift `expr $OPTIND - 1`
if [ $# -eq 1 ]; then
ALT_ROOT="$1"
echo "Creating ram disk for $ALT_ROOT"
fi
function cleanup
{
umount -f "$rdmnt" 2>/dev/null
lofiadm -d "$rdfile" 2>/dev/null
rm -fr "$rddir" 2> /dev/null
}
function getsize
{
# Estimate image size, add %10 overhead for ufs stuff
total_size=0
for file in $filelist
do
if [ -e "$ALT_ROOT/$file" ] ; then
du -sk "$ALT_ROOT/$file" | read size name
(( total_size += size ))
fi
done
(( total_size += total_size * 10 / 100 ))
}
function create_ufs
{
# should we exclude amd64 binaries?
[ $is_amd64 -eq 0 ] && NO_AMD64="-name amd64 -prune"
mkfile ${total_size}k "$rdfile"
lofidev=`lofiadm -a "$rdfile"`
newfs $lofidev < /dev/null 2> /dev/null
mkdir "$rdmnt"
mount -F mntfs mnttab /etc/mnttab > /dev/null 2>&1
mount -o nologging $lofidev "$rdmnt"
# do the actual copy
cd "/$ALT_ROOT"
find $filelist -print $NO_AMD64 2> /dev/null | \
cpio -pdum "$rdmnt" 2> /dev/null
umount "$rdmnt"
lofiadm -d "$rdfile"
rmdir "$rdmnt"
# Check if gzip exists in /usr/bin, so we only try to run gzip
# on systems that have gzip. Then run gzip out of the patch to
# pick it up from bfubin or something like that if needed.
#
if [ -x /usr/bin/gzip ] ; then
gzip -c "$rdfile" > "$ALT_ROOT/$BOOT_ARCHIVE-new"
else
cat "$rdfile" > "$ALT_ROOT/$BOOT_ARCHIVE-new"
fi
}
function create_isofs
{
# should we exclude amd64 binaries?
[ $is_amd64 = 0 ] && NO_AMD64="-m amd64"
# create image directory seed with graft points
mkdir "$rdmnt"
files=
isocmd="mkisofs -quiet -graft-points -dlrDJN -relaxed-filenames $NO_AMD64"
for path in $filelist
do
if [ -d "$ALT_ROOT/$path" ]; then
isocmd="$isocmd $path/=\"$ALT_ROOT/$path\""
mkdir -p "$rdmnt/$path"
elif [ -f "$ALT_ROOT/$path" ]; then
files="$files $path"
fi
done
cd "/$ALT_ROOT"
find $files 2> /dev/null | cpio -pdum "$rdmnt" 2> /dev/null
isocmd="$isocmd \"$rdmnt\""
rm -f "$errlog"
# Check if gzip exists in /usr/bin, so we only try to run gzip
# on systems that have gzip. Then run gzip out of the patch to
# pick it up from bfubin or something like that if needed.
#
if [ -x /usr/bin/gzip ] ; then
ksh -c "$isocmd" 2> "$errlog" | \
gzip > "$ALT_ROOT/$BOOT_ARCHIVE-new"
else
ksh -c "$isocmd" 2> "$errlog" > "$ALT_ROOT/$BOOT_ARCHIVE-new"
fi
if [ -s "$errlog" ]; then
grep Error: "$errlog" >/dev/null 2>&1
if [ $? -eq 0 ]; then
grep Error: "$errlog"
rm -f "$ALT_ROOT/$BOOT_ARCHIVE-new"
fi
fi
rm -f "$errlog"
}
#
# get filelist
#
filelist=`cat "$ALT_ROOT/boot/solaris/filelist.ramdisk"`
if [ -f "$ALT_ROOT/etc/boot/solaris/filelist.ramdisk" ]; then
filelistI=`cat "$ALT_ROOT/etc/boot/solaris/filelist.ramdisk"`
fi
filelist=`echo $filelist $filelistI | sort -u`
#
# decide if cpu is amd64 capable
#
prtconf -v /devices | grep CPU_not_amd64 > /dev/null 2>&1
is_amd64=$?
scratch=tmp
if [ $format = ufs ] ; then
# calculate image size
getsize
# check to see if there is sufficient space in tmpfs
#
tmp_free=`df -b /tmp | tail -1 | awk '{ printf ($2) }'`
(( tmp_free = tmp_free / 2 ))
if [ $total_size -gt $tmp_free ] ; then
# assumes we have enough scratch space on $ALT_ROOT
scratch="$ALT_ROOT"
fi
fi
rddir="/$scratch/create_ramdisk.$$.tmp"
rdfile="$rddir/rd.file"
rdmnt="$rddir/rd.mount"
errlog="$rddir/rd.errlog"
# make directory for temp files safely
rm -rf "$rddir"
mkdir "$rddir"
# Clean up upon exit.
trap 'cleanup' EXIT
echo "updating $ALT_ROOT/$BOOT_ARCHIVE...this may take a minute"
if [ $format = "ufs" ]; then
create_ufs
else
create_isofs
fi
# sanity check the archive before moving it into place
# the file type check also establishes that the file exists at all
#
ARCHIVE_SIZE=`du -k "$ALT_ROOT/$BOOT_ARCHIVE-new" | cut -f 1`
file "$ALT_ROOT/$BOOT_ARCHIVE-new" | grep gzip > /dev/null
if [ $? = 1 ] && [ -x /usr/bin/gzip ] || [ $ARCHIVE_SIZE -lt 5000 ]; then
echo "update of $ALT_ROOT/$BOOT_ARCHIVE failed"
rm -rf "$rddir"
exit 1
fi
#
# For the diskless case, hardlink archive to /boot to make it
# visible via tftp. /boot is lofs mounted under /tftpboot/<hostname>.
# NOTE: this script must work on both client and server
#
grep "[ ]/[ ]*nfs[ ]" "$ALT_ROOT/etc/vfstab" > /dev/null
if [ $? = 0 ]; then
mv "$ALT_ROOT/$BOOT_ARCHIVE-new" "$ALT_ROOT/$BOOT_ARCHIVE"
rm -f "$ALT_ROOT/boot/boot_archive"
ln "$ALT_ROOT/$BOOT_ARCHIVE" "$ALT_ROOT/boot/boot_archive"
rm -rf "$rddir"
exit
fi
lockfs -f "/$ALT_ROOT"
mv "$ALT_ROOT/$BOOT_ARCHIVE-new" "$ALT_ROOT/$BOOT_ARCHIVE"
lockfs -f "/$ALT_ROOT"
rm -rf "$rddir"