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78 lines
2.1 KiB
78 lines
2.1 KiB
#!/bin/sh
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#
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# take a boot directory with kernel + initrd and create a new one
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# with a new kernel + initrd
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# Usage: ./upd-kernel <olddir> <newdir> <newkernelrpm>
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#
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# Copyright (C) 2007 Red Hat, Inc. All rights reserved.
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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#
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OLDDIR=`readlink -f $1`
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NEWDIR=$2
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KRPM=`readlink -f $3`
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NEWVER=$(rpm -qp --provides $KRPM | awk -F ' = ' '/kernel-uname-r/ { print $2; }')
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if [ -z "$OLDDIR" -o -z "$NEWDIR" -o -z "$KRPM" ]; then
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echo "Usage: $0 <olddir> <newdir> <newkernelrpm>"
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exit 1
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fi
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if [ ! -d $OLDDIR ]; then
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echo "Directory $OLDDIR doesn't exist"
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exit 1
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fi
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if [ -d $NEWDIR ]; then
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NEWDIR=`readlink -f $NEWDIR`
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else
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NEWDIR=`readlink -f .`/$NEWDIR
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mkdir $NEWDIR
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fi
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WORKDIR=$(/bin/mktemp -d /tmp/kernrpm.XXXXXX)
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pushd $WORKDIR > /dev/null
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# explode the rpm
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mkdir rpm
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pushd rpm > /dev/null
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rpm2cpio $KRPM | cpio -id --quiet
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popd > /dev/null
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# explode the initrd
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mkdir initrd
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pushd initrd > /dev/null
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zcat $OLDDIR/initrd.img | cpio -id --quiet
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for mod in $(find modules/ -type f -name '*.ko.gz' -exec basename {} \; | sort | uniq) ; do
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for path in $(find $WORKDIR/rpm/lib/modules/$NEWVER/ -name ${mod%.gz}); do
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dest=${path##$WORKDIR/rpm/lib/}
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mkdir -p $(dirname $dest)
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gzip < $path > $dest.gz
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done
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done
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/sbin/depmod -a -b . $NEWVER
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rm -f modules/$NEWVER/modules.*map
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find . | cpio --quiet -c -o | gzip -9 > $NEWDIR/initrd.img
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popd > /dev/null
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cp $WORKDIR/rpm/boot/vmlinuz-* $NEWDIR/vmlinuz
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popd > /dev/null
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rm -rf $WORKDIR
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