localqemubuilder-create



#!/bin/sh
#
# Copyright © 2006-2009 Jonas Smedegaard <dr@jones.dk>
# Description: Create QEMU environment
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2, or (at your option)
# any later version.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
# General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
# 02111-1307 USA.
#
# Depends: qemu, sudo

set -e

PRG=$(basename "$0")

showhelp() {
    cat <<EOF
Usage:   $PRG POOL [ DISTRIBUTION [ OTHERMIRROR] ]

Examples:
    $PRG sid
    $PRG sid+mm sid 'deb http://debian-multimedia.org/ sid main'
    $PRG sid-ia32 sid --arch i386
EOF
}

exit1() {
    echo "ERROR: $1"
    exit 1
}

ask() {
    echo -n "$1 (y/N)? "
    read response
    case "$response" in
        y|Y)
        :
        ;;
        *)
        return 1
        ;;
    esac
    return
}

if [ $# -eq 0 ]; then
    showhelp
    exit1 "not enough parameters"
fi

pool=
distro=
arch=
newline='
'
while [ $# -gt 0 ]; do
    case $1 in
        -h|--help)
            showhelp
            exit 0
            ;;
        --arch|-a)
            arch="$2"
            shift 2 || exit1 "option \"--arg\" requires an argument"
            ;;
        --)
            shift
            break
            ;;
        --*|-*)
#           opts="$opts $1"
#           shift
            exit1 "options (apart from --arch) are curently unsupported"
            ;;
        *)
            if [ -z "$pool" ]; then
                pool="$1"
            elif [ -z "$distro" ]; then
                distro="$1"
            else
                othermirrors="${othermirrors:+$othermirrors$newline}$1"
            fi
            shift
            ;;
    esac
done

if [ -z "$pool" ]; then
    exit1 "no pool provided"
fi
if [ -z "$distro" ]; then
    distro="$pool"
fi

case $arch in
    armel)
#       kernelurl="http://yoush.homelinux.org:8079/nikita/armel-qemubuilder/vmlinuz-2.6.26-versatile-qemu"
#       kernelref="http://yoush.homelinux.org:8079/tech/setting-up-armel-qemubuilder"
        kernelurl="http://people.debian.org/~aurel32/qemu/armel/vmlinuz-2.6.26-1-versatile"
        initrdurl="http://people.debian.org/~aurel32/qemu/armel/initrd.img-2.6.26-1-versatile"
        kernelref="http://people.debian.org/~aurel32/qemu/armel/"
    ;;
    mipsel)
        kernelurl="http://people.debian.org/~aurel32/qemu/mipsel/vmlinux-2.6.26-1-4kc-malta"
        kernelref="http://people.debian.org/~aurel32/qemu/mipsel/"
    ;;
    *)
        exit1 "unsupported architecture: \"$arch\""
    ;;
esac

basepath="/var/cache/pbuilder/base-$pool.qemu"
aptcache=""
buildresult="$HOME/src/pbuild-$pool/"
qemudir="/var/cache/pbuilder/qemu-$pool/"

makepaths=''
for path in "$buildresult" "$qemudir"; do
    if [ ! -d "$path" ]; then
        echo "W: Needed path \"$path\" does not exist"
        makepaths='yes'
    fi
done
if [ "$makepaths" = 'yes' ]; then
    [ "$force" = 'yes' ] \
        || ask 'Create the missing path(s)' \
        || exit1 "Cannot continue without those missing paths"
    mkdir -p "$buildresult"
    sudo mkdir -p "$qemudir"
fi

if [ -f "$basepath" ]; then
    echo "W: Needed path \"$basepath\" already exists"
    [ "$force" = 'yes' ] \
        || ask 'Remove the path' \
        || exit1 "Cannot continue with that path already there"
    sudo rm "$basepath"
fi

for url in $kernelurl $initrdurl; do
    file="$qemudir/$(basename $url)"
    if [ -f "$file" ]; then
        echo "W: file  \"$file\" already exists"
        if [ "$force" = 'yes' ] || ask 'Replace old file'; then
            sudo rm "$file"
        fi
    fi
done
for url in $kernelurl $initrdurl; do
    file="$qemudir/$(basename $url)"
    if ! [ -f "$qemudir/$kernel" ]; then
        sudo wget -O "$file" "$kernelurl"
    fi
done

if [ -f "$qemudir/cfg" ]; then
    echo "W: Configfile  \"$qemydir/cfg\" already exists"
    if [ "$force" = 'yes' ] || ask 'Overwrite old config'; then
        sudo rm "$qemudir/cfg"
    fi
fi

if ! [ -f "$qemudir/cfg" ]; then
    sudo sh -c "cat >\"$qemudir/cfg\"" <<EOF
# kernel origin: $kernelurl
# more info: $kernelref
ARCH=$arch
MEMORY_MEGS=256
${kernelurl:+KERNEL_IMAGE=$qemudir/$(basename $kernelurl)}
${initrdurl:+INITRD=$qemudir/$(basename $initrdurl)}
MIRRORSITE=http://auryn:9999/debian
#ARCH_DISKDEVICE=sd
EOF
fi

if [ -n "$othermirrors" ]; then
echo "$othermirrors" | perl -e "while (<>) {/\w/ and unshift @m, '--othermirror', \$_};"\
"exec 'sudo', 'qemubuilder', '--create', '--buildresult', '$buildresult', '--distribution', '$distro', '--basepath', '$basepath', '--aptcache', '$aptcache', '--configfile', '$qemudir/cfg', @m"
else
perl -e "exec 'sudo', 'qemubuilder', '--create', '--buildresult', '$buildresult', '--distribution', '$distro', '--basepath', '$basepath', '--aptcache', '$aptcache', '--configfile', '$qemudir/cfg'"
fi