ISO/mkarchiso

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#!/bin/sh
CONFIG="$(pwd)/mkarchiso.conf"
CPIOCONFIG="$(pwd)/archiso-mkinitcpio.conf"
DEF_CONFIG_DIR="$(pwd)/default-config"
QUIET="y"
FORCE="n"
command_name=""
work_dir=""
isoname=""
PKGDIR="."
APPNAME=$(basename "${0}")
ALL_ARGS="${@}" #for fakeroot usage
usage ()
{
echo "usage ${APPNAME} [options] command <command options>"
echo " general options:"
echo " -c CONFIG Use CONFIG file. default: /etc/archlive/mkarchiso.conf"
echo " -i CPIO CONFIG Use CONFIG file for mkinitcpio. default: /etc/archlive/mkinitcpio.conf"
echo " -f Force overwrite of working files / iso"
echo " -v Verbose output. Default: no"
echo " -h This message."
echo " commands:"
echo " install <working dir> : where to build the ISO root"
echo " squash <working dir> : generate a squashfs image of the ISO root"
echo " iso <working dir> <iso name> : build an iso from the working directory"
echo " all <working dir> <iso name> : perform all of the above, in order"
exit 1
}
while getopts 'c:i:fvh' arg; do
case "${arg}" in
c) CONFIG="${OPTARG}" ;;
i) CPIOCONFIG="${OPTARG}" ;;
f) FORCE="y" ;;
v) QUIET="n" ;;
h|?) usage ;;
*) echo "invalid argument '${arg}'"; usage ;;
esac
done
shift $(($OPTIND - 1))
echo "ARGS: $@"
[ $# -le 1 ] && usage
command_name="${1}"
case "${command_name}" in
install) work_dir="${2}" ;;
squash) work_dir="${2}" ;;
iso) work_dir="${2}"; isoname="${3}" ;;
all) work_dir="${2}"; isoname="${3}" ;;
*) echo "invalid command name '${command_name}'"; usage ;;
esac
[ "x${work_dir}" = "x" ] && (echo "please specify a working directory" && usage)
#TODO - do we even need a config file?
if [ -e "${CONFIG}" ]; then
source "${CONFIG}"
else
echo "Config '${CONFIG}' does not exist, aborting..."
exit 1
fi
# {{{ Build
isoroot="${work_dir}/iso"
instroot="${work_dir}/install"
if [ -z $FAKEROOTKEY ]; then
echo "Switching to fakeroot environment"
fakeroot ${0} ${ALL_ARGS}
exit $?
fi
_kversion ()
{
source ${instroot}/etc/mkinitcpio.d/kernel26.kver
echo ${ALL_kver}
}
_pacman ()
{
#depmod causes fakechroot to coredump - it's harmless, but makes the output ugly
fkchroot=""
if [ "${1}" = "-safe" ]; then
fkchroot=""
shift 1
fi
FAKEROOTSAV=$FAKEROOTKEY; unset FAKEROOTKEY
#TODO this grep is a tad weird...
if ! eval "${fkchroot} pacman -Sf --noconfirm -r \"${instroot}\" $*"; then
exit 1
fi
FAKEROOTKEY=$FAKEROOTSAV
}
install_pkgfile ()
{
safe=""
if [ "${1}" = "-safe" ]; then
safe="-safe"
shift 1
fi
if [ -e "${1}" ]; then
toinstall=""
while read pkg; do
echo $ignorepkgs | grep "\<$pkg\>" >/dev/null 2>&1 && continue
toinstall="${toinstall} ${pkg}"
done < ${1}
_pacman "${safe}" "${toinstall}"
fi
}
if [ "${command_name}" = "install" -o "${command_name}" = "all" ]; then
if [ -e "${work_dir}" -a "${FORCE}" = "n" ]; then
echo "Working dir '${work_dir}' already exists, aborting..."
exit 1
fi
mkdir -p "${isoroot}"
mkdir -p "${instroot}"
FAKEROOTSAV=$FAKEROOTKEY; unset FAKEROOTKEY
if ! pacman -Sy -r "${instroot}" | grep -v "cannot open logfile"; then
echo "Error, failed to sync pacman... aborting."
exit 1
fi
FAKEROOTKEY=$FAKEROOTSAV
echo "Installing 'base' packages..."
install_pkgfile "${PKGDIR}/base.packages"
echo "Installing custom packages..."
for fil in ${package_files}; do
#TODO search for file if not absolute...
echo " Installing packages from file '$fil'"
install_pkgfile "${fil}"
done
for pkg in ${additional_packages}; do
echo " Installing package '${pkg}'"
_pacman "${pkg}"
done
echo "Installing kernel '${kernelpkg}'"
FAKEROOTSAV=$FAKEROOTKEY; unset FAKEROOTKEY
if ! _pacman -safe "${kernelpkg}" ; then
echo "pacman failed to install '${kernelpkg}', aborting..."
exit 1
fi
FAKEROOTKEY=$FAKEROOTSAV
kernelver=$(_kversion)
kernelsuffix=${kernelver##*-}
echo "Kernel Version ${kernelver} (${kernelsuffix}) installed - installing modules..."
install_pkgfile -safe "modules.${kernelsuffix}"
echo "Updating module dependancies"
[ "${kernelsuffix}" = "ARCH" ] && kernelsuffix=""
depmod -a -b "${instroot}" -v "${kernelver}" -F "${instroot}/boot/System.map26${kernelsuffix}" >/dev/null
find "${instroot}/boot" -name *.img -delete #TODO, will this delete our special stuff?
echo "Applying default configuration for the Arch ISO."
cp -rfa ${DEF_CONFIG_DIR}/* "${instroot}"
echo "Copyright (C) 2006, Arch Linux (Judd Vinet)" > "${instroot}/etc/copyright"
echo "Creating initial device nodes "
rm -f "${instroot}/dev/console" "${instroot}/dev/null" "${instroot}/dev/zero"
mknod -m 644 "${instroot}/dev/console" c 5 1
mknod -m 666 "${instroot}/dev/null" c 1 3
mknod -m 666 "${instroot}/dev/zero" c 1 5
echo "Creating default home directory"
mkdir -p "${instroot}/home/arch"
# Cleanup
echo "Cleaning up ISO root files..."
find "${instroot}" -name *.pacnew -name *.pacsave -name *.pacorig -delete
kill_dirs="var/abs var/cache/man var/cache/pacman var/log/* var/mail tmp usr/include initrd"
for x in ${kill_dirs}; do
if [ -e "${instroot}/${x}" ]; then
rm -rf "${instroot}/${x}"
fi
done
find "${instroot}/lib" -name *.a -delete
find "${instroot}/usr/lib" -name *.a -delete
# this actually takes up alot of space...
for d in ${instroot}/var/lib/pacman/*; do
[ "$(basename ${d})" != "local" ] && rm -rf "${d}"
done
if [ -e "${instroot}/boot" ]; then
rm -rf "${isoroot}/boot"
mv "${instroot}/boot" "${isoroot}"
fi
fi
if [ "${command_name}" = "squash" -o "${command_name}" = "all" ]; then
if [ -e "${isoroot}/archlive.sqfs" ]; then
echo -n "Removing old squashfs image..."
rm "${isoroot}/archlive.sqfs"
echo "done."
fi
echo -n "Creating squashfs image. This may take some time..."
start=$(date +%s)
mksquashfs "${instroot}" "${isoroot}/archlive.sqfs" -root-owned > /dev/null
echo "done in $(echo $start $(date +%s) | awk '{ printf "%0.2f",($2-$1)/60 }') minutes."
fi
if [ "${command_name}" = "iso" -o "${command_name}" = "all" ]; then
[ "x${isoname}" = "x" ] && (echo "please specify an iso name" && usage)
if [ -e "${isoname}" ]; then
if [ "${FORCE}" = "y" ]; then
rm -rf "${isoname}"
else
echo "ISO Image '${isoname}' already exists, aborting..."
exit 1
fi
fi
if [ ! -e "${CPIOCONFIG}" ]; then
echo "mkinitcpio config '${CPIOCONFIG}' does not exist, aborting..."
exit 1
fi
kernelver=$(_kversion)
basedir=${instroot}
[ "${instroot:0:1}" != "/" ] && basedir="$(pwd)/${instroot}"
if ! mkinitcpio -c "${CPIOCONFIG}" -b "${basedir}" -k "${kernelver}"\
-g "${isoroot}/boot/archlive.img"; then
echo "initcpio image creation failed..."
exit 1
fi
cp ${instroot}/usr/lib/grub/i386-pc/* "${isoroot}/boot/grub"
echo "Creating ISO image..."
q=""
#[ "${QUIET}" = "y" ] && q="-q"
mkisofs ${q} -r -l -b "boot/grub/stage2_eltorito" -uid 0 -gid 0 -no-emul-boot \
-boot-load-size 4 -boot-info-table -publisher "Arch Linux <archlinux.org>" \
-input-charset=UTF-8 -p "prepared by $NAME" -A "Arch Linux Live/Rescue CD" \
-copyright /etc/copyright -o "${isoname}" "${isoroot}"
fi