ISO/archiso/mkarchiso
Aaron Griffin 32a1991679 Properly remove the usb image's tmpdir
Guess what? rm -f won't remove a dir. Whoops

Signed-off-by: Aaron Griffin <aaronmgriffin@gmail.com>
2008-12-23 00:33:46 -08:00

317 lines
9.1 KiB
Bash
Executable File

#! /bin/bash
PKGLIST=""
QUIET="y"
FORCE="n"
PACCONFIG="/etc/pacman.conf"
APPNAME=$(basename "${0}")
# 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 " -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 -p <bootloader> <dir> <image name>"
echo " build an iso image from the working dir"
echo " usb -p <bootloader> <dir> <image name>"
echo " build an iso image from the working dir"
exit $1
}
while getopts 'i:P:p:a:t:fvh' arg; do
case "${arg}" in
p) PKGLIST="${PKGLIST} ${OPTARG}" ;;
C) PACCONFIG="${OPTARG}" ;;
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}" ;;
usb) 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 -C "$PACCONFIG" -f "${work_dir}/root-image" $* 2>&1 >/dev/null
ret=$?
else
mkarchroot -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/"
mkdir -p "${work_dir}/root-image/"
echo "# archiso isomounts file
# img - location of image/directory to mount relative to addons directory
# arch - architecture of this image
# mount point - absolute location on the post-initrd root
# type - either 'bind' or 'squashfs' for now
# syntax: <img> <arch> <mount point> <type>
# NOTE: Order matters. If the same file exists in multiple
# images, the FIRST one mounted, top-down, will take precedence
root-image.sqfs i686 / squashfs
#root-image-x86_64.sqfs x86_64 / squashfs" > "${work_dir}/isomounts"
echo "README for this archiso created directory
All directories in this dir, except for 'iso' will be squashed
with squashfs and put into the iso dir as iso/<dirname>.sqfs
This should be reflected in the isomounts file
The iso dir is later used to build the actual bootable iso.
Please ensure the proper bootloader is installed or copied
to the iso/ directory.
...TODO: Write more..." > "${work_dir}/README"
if [ "${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
#TODO is this needed? do it at the Makefile level?
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
# delete a lot of unnecessary cache/log files
kill_dirs="var/abs var/cache/man var/cache/pacman var/lib/pacman/sync var/log/* var/mail tmp/* initrd"
for x in ${kill_dirs}; do
if [ -e "${work_dir}/root-image/${x}" ]; then
rm -rf "${work_dir}/root-image/${x}"
fi
done
fi
}
# _mksquash dirname
_mksquash () {
echo "_mksquash $1"
if [ ! -d "$1" ]; then
echo "Error: '$1' is not a directory"
return 1
fi
sqimg="${work_dir}/iso/$(basename ${1}).sqfs"
echo "====> Generating SquashFS image for '${1}'"
if [ -e "${sqimg}" ]; then
if [ "${FORCE}" = "y" ]; then
echo -n "Removing old SquashFS image..."
rm "${sqimg}"
echo "done."
else
echo "error: SquashFS image '${sqimg}' already exists, aborting."
exit 1
fi
fi
echo "Creating SquashFS image. This may take some time..."
start=$(date +%s)
if [ "${QUIET}" = "y" ]; then
mksquashfs "${1}" "${sqimg}" -noappend >/dev/null
else
mksquashfs "${1}" "${sqimg}" -noappend
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}/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
cp "${work_dir}/isomounts" "${work_dir}/iso/"
}
command_iso () {
_imgcommon
bootflags=""
if [ "$PKGLIST" = "grub" -o "$PKGLIST" = "grub-gfx" ]; then
if [ ! -e "${work_dir}/iso/boot/grub/stage2_eltorito" ]; then
echo "error: grub stage files not found in '${work_dir}/iso/boot/grub'"
exit 1
fi
bootflags="-b boot/grub/stage2_eltorito"
elif [ "$PKGLIST" = "syslinux" ]; then
if [ ! -e "${work_dir}/iso/boot/isolinux/isolinux.bin" ]; then
echo "error: isolinux bin file not found in '${work_dir}/iso/boot/isolinux'"
exit 1
fi
bootflags="-b boot/isolinux/isolinux.bin -c boot/isolinux/boot.cat"
else
echo "No bootloader specified. Use the -p flag to specify"
echo " Supported Bootloaders:"
echo " grub"
echo " grub-gfx"
echo " syslinux"
exit 1
fi
echo "Creating ISO image..."
qflag=""
[ "${QUIET}" = "y" ] && qflag="-q"
mkisofs ${qflag} -r -l $bootflags -uid 0 -gid 0 \
-input-charset utf-8 -p "prepared by mkarchiso" \
-no-emul-boot -boot-load-size 4 -boot-info-table \
-publisher "ArchLinux <archlinux.org>" \
-A "ArchLinux Live/Rescue CD" \
-o "${imgname}" "${work_dir}/iso/"
}
command_usb () {
_imgcommon
fsimg="${imgname}.part1"
# ext2 overhead's upper bound is 6%, empirically tested up to 1GB
rootsize=$(du -bs ${IMGROOT}|cut -f1)
imgsz=$(( (${rootsize}*106)/100/512 + 1)) # image size in sectors
# create the filesystem image file
dd if=/dev/zero of="$fsimg" bs=512 count="$imgsz"
# create a filesystem on the image
mke2fs -m 0 -F "$fsimg"
# mount the filesystem and copy data
modprobe loop
TMPDIR=$(mktemp -d archiso-usbXXXXXX)
mount -o loop "$fsimg" "$TMPDIR"
cp -a "${work_dir}"/iso/* "$TMPDIR"
umount "$TMPDIR"
rm -rf "$TMPDIR"
# add sectors 0-62, then glue together
dd if=/dev/zero of="${imgname}" bs=512 count=63
cat "$fsimg" >> "${imgname}"
rm "$fsimg"
# create a partition table
# if this looks like voodoo, it's because it is
sfdisk -uS -f "${imgname}" << EOF
63,$imgsz,83,*
0,0,00
0,0,00
0,0,00
EOF
# install grub on the image
grub --no-floppy --batch << EOF
device (hd0) ${imgname}
root (hd0,0)
setup (hd0)
EOF
}
# Go through the main commands in order. If 'all' was specified, then we want
# to do everything. Start with 'install'.
if [ "${command_name}" = "create" ]; then
command_create
fi
if [ "${command_name}" = "iso" ]; then
command_iso
fi
if [ "${command_name}" = "usb" ]; then
command_usb
fi
# vim:ts=4:sw=4:et: