diff options
Diffstat (limited to 'build_tools/clarch/larch/run/usbboot_grub')
| -rwxr-xr-x | build_tools/clarch/larch/run/usbboot_grub | 180 |
1 files changed, 180 insertions, 0 deletions
diff --git a/build_tools/clarch/larch/run/usbboot_grub b/build_tools/clarch/larch/run/usbboot_grub new file mode 100755 index 0000000..2f837d5 --- /dev/null +++ b/build_tools/clarch/larch/run/usbboot_grub @@ -0,0 +1,180 @@ +#! /bin/bash +# +# usbboot_grub +# +# Author: Michael Towers <gradgrind[at]online[dot]de> + +# This file is part of the larch project. +# +# larch 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 of the License, or +# (at your option) any later version. +# +# larch 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 larch; if not, write to the Free Software Foundation, Inc., +# 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA +# +#---------------------------------------------------------------------------- +# 2008.06.22 + +APP="$( basename $0 )" + +usage () { + echo + echo "Usage:" + echo " ${APP} [<Arch installation root directory>]" + echo + echo " Prepare a bootable USB-stick from a larch build." + echo " If no Arch directory is given, '/' is assumed." + exit 1 +} + +if [ -n "$1" ]; then + AINSTALL="$( readlink -f $1 )" + if [ ! -x ${AINSTALL}/sbin/grub ]; then + echo "ERROR: ${AINSTALL}/sbin/grub not found" + exit 1 + fi +else + AINSTALL="" + if ! which grub &>/dev/null; then + echo "ERROR: grub not found" + exit 1 + fi +fi +CDDATA=${AINSTALL}/.larch/cd + +if [ ! -f ${CDDATA}/system.sqf ]; then + echo "ERROR: ${CDDATA} does not contain larch cd data" + usage +fi +if [ ! -f ${CDDATA}/boot/grub/stage1 ]; then + echo "ERROR: grub data not in ${CDDATA}/boot/grub" + exit 1 +fi + +echo "//" +echo "// **********************************************************" +echo "//" +echo "// ${APP} will prepare a bootable USB stick with your" +echo "// previously prepared larch data from ${CDDATA}" +echo "//" +echo "// As an alternative it might render your system unbootable." +echo "// If that thought disturbs you please don't continue." +echo "//" +echo "// This program is DANGEROUS - you have been warned!!!" +echo "//" +echo "// If you are too cool to be concerned about the warnings," +echo "// please insert your USB stick, which should already be" +echo "// appropriately partitioned." +echo "//" +echo "// **********************************************************" +echo "//" + +# test if the script is started by root user. If not, exit +if [ $UID -ne 0 ]; then + echo "Only root can run ${APP}"; exit 1 +fi + +echo "//" +echo "// Enter the number of the partition you wish to use (0 to quit):" + +devices=/tmp/devices$$ +:> ${devices} +i=0 +sfdisk -d | grep "/dev/sd[a-z][1-4] " | grep -v "Id= [05]" | \ + sed "s|\(.*\):.*size=\( *[0-9]*\).*|\1 \2|" | while read device sectors; do + + i=$(( ${i} + 1 )) + echo "${device}" >>${devices} + echo "// ${i}: ${device} $(( ${sectors} / 2048 )) MiB" +done + +while true; do + read -p "// Device: " d + if [ "${d}" -eq "0" ]; then exit 1; fi + i=0 + { while read device; do + i=$(( ${i} + 1 )) + if [ "${d}" -eq "${i}" ]; then break 2; fi + done } <${devices} +done + +rm ${devices} + +echo "//" +read -p "// \"${device}\" will now be prepared. Continue? [y/N]: " ans +if [ -z "`echo ${ans} | grep '^ *[yY]'`" ]; then exit 1; fi + +echo "//" +echo "// Formatting ${device} (ext2)" +dev=${device:0:8} +part=${device:8} +sfdisk ${dev} -N${part} <<EOF +,,L,* +EOF + +mke2fs ${device} + +echo "// Copying the files" +stick=/tmp/mnt +mkdir -p ${stick} +umount ${device} &>/dev/null +mount ${device} ${stick} +if [ $? != 0 ]; then + echo "ERROR: Failed to mount device, quitting" + exit 3 +fi +cp -a ${CDDATA}/* ${stick} +umount ${stick} + +# Convert the device and partion to grub syntax +grubdevice () +{ +## The contents of device.map look something like this: +#(fd0) /dev/fd0 +#(hd0) /dev/hda +#(hd1) /dev/sda +gdev="$( cat ${AINSTALL}${dmap} | grep "${dev}" | cut -f1 | tr -d "()" )" +gpart=$(( ${part} - 1 )) +echo "// Installing GRUB to (${gdev}), root (${gdev},${gpart})" +} + +dmap=/tmp/device.map +rm -f ${AINSTALL}${dmap} +if [ -n "${AINSTALL}" ]; then + # First try to get a device mapping + mount --bind /dev ${AINSTALL}/dev + echo "quit" | chroot ${AINSTALL} grub --no-floppy --device-map=${dmap} --batch + grubdevice + # Now actually install grub + # As far as I can tell, the extra options to grub are not needed here + chroot ${AINSTALL} grub --batch <<EOT +root (${gdev},${gpart}) +setup (${gdev}) +quit +EOT + umount ${AINSTALL}/dev +else + # First try to get a device mapping + echo "quit" | grub --no-floppy --device-map=${dmap} --batch + grubdevice + # Now actually install grub + # As far as I can tell, the extra options to grub are not needed here + grub --batch <<EOT +root (${gdev},${gpart}) +setup (${gdev}) +quit +EOT +fi +rm -f ${AINSTALL}${dmap} + +echo "//" +echo "// Done!" +echo "// If all went well your usb stick should now be a bootable larch system" |