86 lines
2.7 KiB
Text
86 lines
2.7 KiB
Text
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#!/bin/sh
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# -*- coding: utf-8 -*-
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#
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# «casper-new-uuid» - Creates and injects new UUIDs for casper disks
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#
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# Create new UUIDs for disks to prevent conflicts and booting the wrong casper
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# directory. Particularly useful in creating recovery disks that need to be
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# able to also work with recovery partitioning schemes.
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#
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# Copyright (C) 2008, Dell Inc.
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#
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# Author:
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# - Mario Limonciello <Mario_Limonciello@Dell.com>
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#
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# This script is free software; you can redistribute it and/or modify it under
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# the terms of the GNU General Public License as published by the Free
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# Software Foundation; either version 2 of the License, or at your option)
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# 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 along
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# with this application; if not, write to the Free Software Foundation, Inc., 51
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# Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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##################################################################################
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set -e
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help() {
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echo
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echo "USAGE: $0 initrd.{l,g}z <path-to-new-initrd> <path-to-new-casper-uuid> "
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echo
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echo "initrd.{l,g}z is the absolute path to the original gzipped or lzmaed initramfs"
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echo "<path-to-new-initrd> is the destination directory for the new compressed initramfs"
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echo "<path-to-new-casper-uuid> is the destination directory for the new casper-uuid-TYPE "
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echo
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echo "if either path is absent, they will end up in the current directory "
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echo "TYPE is determined by an already existing casper-uuid-* or by 'uname -s'"
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}
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if [ "$#" = "0" ] || [ "x$1" = x-h ] || [ "x$1" = x--help ]; then
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help
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exit 3
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fi
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CWD=`pwd`
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TEMPDIR=`mktemp -d /tmp/uuid-XXXXXX`
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TYPE=`uname -r | cut -d '-' -f 3`
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if echo "$1" | grep ".lz$" >/dev/null; then
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COMPRESSOR="lzma"
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SUFFIX=".lz"
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elif echo "$1" | grep ".gz$" >/dev/null; then
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COMPRESSOR="gzip"
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SUFFIX=".gz"
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else
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echo "Unsupported archive type."
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exit 2
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fi
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if [ -z "$2" ] || [ ! -d "$2" ] || [ "$2" = "." ]; then
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COMPRESS_DIR="$CWD"
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else
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COMPRESS_DIR="$2"
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fi
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if [ -z "$3" ] || [ ! -d "$3" ] || [ "$3" = "." ]; then
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CASPERDIR="$CWD"
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else
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CASPERDIR="$3"
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fi
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cd "$TEMPDIR"
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$COMPRESSOR -cd "$1" -S "$SUFFIX" | cpio -id
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uuidgen -r > conf/uuid.conf
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find . | cpio --quiet --dereference -o -H newc | $COMPRESSOR -9c > "$COMPRESS_DIR/initrd$SUFFIX"
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if [ "$(ls "$CASPERDIR/casper-uuid"-* >/dev/null 2>&1 | wc -l)" = 1 ]; then
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cp conf/uuid.conf "$CASPERDIR/casper-uuid"-*
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else
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cp conf/uuid.conf "$CASPERDIR/casper-uuid-$TYPE"
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fi
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cd "$CWD"
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rm -rf "$TEMPDIR"
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