ISO/archiso/mkarchiso

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#! /bin/bash
PKGLIST=""
QUIET="y"
FORCE="n"
PACCONFIG="/etc/pacman.conf"
export LABEL="ARCH_$(date +%Y%m)"
PUBLISHER="Arch Linux <http://www.archlinux.org>"
APPLICATION="Arch Linux Live/Rescue CD"
COMPRESSION="gzip"
CREATE_DEFAULT="n"
INSTALL_DIR="arch"
APPNAME=$(basename "${0}")
ARCH=$(uname -m)
# usage: usage <exitvalue>
usage ()
{
echo "usage ${APPNAME} [options] command <command options>"
echo " general options:"
echo " -f Force overwrite of working files/squashfs image/bootable image"
echo " -p PACKAGE(S) Additional package(s) to install, can be used multiple times"
echo " -C <file> Config file for pacman. Default $PACCONFIG"
echo " -L <label> Set a label for the disk"
echo " -P <publisher> Set a publisher for the disk"
echo " -A <application> Set an application name for the disk"
echo " -c <compressor> Set SquashFS compression type: gzip, lzma or lzo. Default $COMPRESSION"
echo " NOTES:"
echo " lzma: not officially supported yet by Linux (2.6.36)"
echo " lzo: needs Linux >= 2.6.36"
echo " -D <install_dir> Set an install_dir. All files will by located here on ISO (except for syslinux)"
echo " Default $INSTALL_DIR"
echo " NOTE: Max 8 characters, use only [a-z0-9]"
echo " -d Create default user directory /home/arch"
echo " -v Enable verbose output"
echo " -h This message"
echo " commands:"
echo " create <dir>"
echo " create a base directory layout to work with"
echo " includes all specified packages"
echo " iso <dir> <image name>"
echo " build an iso image from the working dir"
exit $1
}
while getopts 'p:C:L:P:A:c:D:dfvh' arg; do
case "${arg}" in
p) PKGLIST="${PKGLIST} ${OPTARG}" ;;
C) PACCONFIG="${OPTARG}" ;;
L) LABEL="${OPTARG}" ;;
P) PUBLISHER="${OPTARG}" ;;
A) APPLICATION="${OPTARG}" ;;
c) COMPRESSION="${OPTARG}" ;;
D) INSTALL_DIR="${OPTARG}" ;;
d) CREATE_DEFAULT="y" ;;
f) FORCE="y" ;;
v) QUIET="n" ;;
h|?) usage 0 ;;
*) echo "invalid argument '${arg}'"; usage 1 ;;
esac
done
#trim spaces
PKGLIST="$(echo $PKGLIST)"
shift $(($OPTIND - 1))
# do UID checking here so someone can at least get usage instructions
if [ "$EUID" != "0" ]; then
echo "error: This script must be run as root."
exit 1
fi
if [ ! -f "$PACCONFIG" ]; then
echo "error: pacman config file '$PACCONFIG' does not exist"
exit 1
fi
command_name="${1}"
work_dir=""
imgname=""
case "${command_name}" in
create) work_dir="${2}"; imgname="none" ;;
iso) work_dir="${2}"; imgname="${3}" ;;
*) echo "invalid command name '${command_name}'"; usage 1 ;;
esac
[ "x${imgname}" = "x" ] && echo "Image name must be specified" && usage 1
[ "x${work_dir}" = "x" ] && echo "Please specify a working directory" && usage 1
echo "${APPNAME} : Configuration Settings"
echo " working directory: ${work_dir}"
echo " image name: ${imgname}"
# usage: _pacman <packages>...
_pacman ()
{
local ret
if [ "${QUIET}" = "y" ]; then
mkarchroot -n -C "$PACCONFIG" -f "${work_dir}/root-image" $* 2>&1 >/dev/null
ret=$?
else
mkarchroot -n -C "$PACCONFIG" -f "${work_dir}/root-image" $*
ret=$?
fi
# Cleanup
find "${work_dir}" -name *.pacnew -name *.pacsave -name *.pacorig -delete
if [ $ret -ne 0 ]; then
exit 1
fi
}
command_create () {
echo "====> Creating working directory: ${work_dir}"
mkdir -p "${work_dir}/iso/${INSTALL_DIR}/${ARCH}"
mkdir -p "${work_dir}/root-image/"
if [ "${PKGLIST}" != "" ]; then
echo "====> Installing packages to '${work_dir}/root-image/'"
_pacman "${PKGLIST}"
echo "Cleaning up what we can"
if [ -d "${work_dir}/root-image/boot/" ]; then
# remove the initcpio images that were generated for the host system
find "${work_dir}/root-image/boot" -name '*.img' -delete
fi
if [ ${CREATE_DEFAULT} == "y" ]; then
if [ -d "${work_dir}/root-image/home/" ]; then
echo "Creating default home directory"
install -d -o1000 -g100 -m0755 "${work_dir}/root-image/home/arch"
fi
fi
# Delete pacman database sync cache files (*.tar.gz)
find "${work_dir}/root-image/var/lib/pacman" -maxdepth 1 -type f -delete
# Delete pacman database sync cache
find "${work_dir}/root-image/var/lib/pacman/sync" -delete
# Delete pacman package cache
find "${work_dir}/root-image/var/cache/pacman/pkg" -type f -delete
# Delete all log files, keeps empty dirs.
find "${work_dir}/root-image/var/log" -type f -delete
# Delete all temporary files and dirs
find "${work_dir}/root-image/var/tmp" -mindepth 1 -delete
# Delete all temporary files and dirs
find "${work_dir}/root-image/tmp" -mindepth 1 -delete
fi
}
# _mksquash dirname
_mksquash () {
if [ ! -d "$1" ]; then
echo "Error: '$1' is not a directory"
return 1
fi
sqimg="${work_dir}/iso/${INSTALL_DIR}/${ARCH}/$(basename ${1}).sqfs"
echo "====> Generating SquashFS image for '${1}'"
if [ -e "${sqimg}" ]; then
dirhaschanged=$(find ${1} -newer ${sqimg})
if [ "${dirhaschanged}" != "" ]; then
echo "SquashFS image '${sqimg}' is not up to date, rebuilding..."
rm "${sqimg}"
else
echo "SquashFS image '${sqimg}' is up to date, skipping."
return
fi
fi
echo "Creating SquashFS image. This may take some time..."
start=$(date +%s)
if [ "${QUIET}" = "y" ]; then
mksquashfs "${1}" "${sqimg}" -noappend -comp "${COMPRESSION}" >/dev/null
else
mksquashfs "${1}" "${sqimg}" -noappend -comp "${COMPRESSION}"
fi
minutes=$(echo $start $(date +%s) | awk '{ printf "%0.2f",($2-$1)/60 }')
echo "Image creation done in $minutes minutes."
}
_imgcommon () {
for d in $(find "${work_dir}" -maxdepth 1 -type d -name '[^.]*'); do
if [ "$d" != "${work_dir}/iso" -a \
"$(basename "$d")" != "iso" -a \
"$d" != "${work_dir}" ]; then
_mksquash "$d"
fi
done
echo "====> Making bootable image"
# Sanity checks
if [ ! -d "${work_dir}/iso" ]; then
echo "Error: '${work_dir}/iso' doesn't exist. What did you do?!"
exit 1
fi
if [ ! -f "${work_dir}/iso/${INSTALL_DIR}/isomounts" ]; then
echo "Error: the isomounts file doesn't exist. This image won't do anything"
echo " Protecting you from yourself and erroring out here..."
exit 1
fi
if [ -e "${imgname}" ]; then
if [ "${FORCE}" = "y" ]; then
echo "Removing existing bootable image..."
rm -rf "${imgname}"
else
echo "Error: Image '${imgname}' already exists, aborting."
exit 1
fi
fi
if ! sed "s|%ARCHISO_LABEL%|${LABEL}|g;
s|%INSTALL_DIR%|${INSTALL_DIR}|g;
s|%ARCH%|${ARCH}|g" -i ${work_dir}/iso/syslinux/syslinux.cfg; then
echo "Error: ${work_dir}/iso/syslinux/syslinux.cfg, doesn't exist, aborting."
exit 1
fi
}
command_iso () {
_imgcommon
echo "Creating ISO image..."
qflag=""
[ "${QUIET}" = "y" ] && qflag="-quiet"
mkisofs ${qflag} -r -l \
-b syslinux/isolinux.bin -c syslinux/boot.cat \
-uid 0 -gid 0 \
-udf -allow-limited-size -iso-level 3 \
-input-charset utf-8 -p "prepared by mkarchiso" \
-no-emul-boot -boot-load-size 4 -boot-info-table \
-publisher "${PUBLISHER}" \
-A "${APPLICATION}" \
-V "${LABEL}" \
-o "${imgname}" "${work_dir}/iso/"
isohybrid "${imgname}"
}
# Go through the main commands in order. If 'all' was specified, then we want
# to do everything. Start with 'install'.
if [ "${command_name}" = "create" ]; then
command_create
fi
if [ "${command_name}" = "iso" ]; then
command_iso
fi
# vim:ts=4:sw=4:et: