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|
#!/bin/bash
#
# Generate a isolinux ISO boot image
function help() {
echo "usage: ${0} [OPTIONS] foo.lkrn [bar.lkrn,...]"
echo
echo "where OPTIONS are:"
echo " -h show this help"
echo " -l build legacy image with floppy emulation"
echo " -o FILE save iso image to file"
}
LEGACY=0
FIRST=""
while getopts "hlo:" opt; do
case ${opt} in
h)
help
exit 0
;;
l)
LEGACY=1
;;
o)
OUT="${OPTARG}"
;;
esac
done
shift $((OPTIND - 1))
if [ -z "${OUT}" ]; then
echo "${0}: no output file given" >&2
help
exit 1
fi
# There should either be mkisofs or the compatible genisoimage program
for command in genisoimage mkisofs; do
if ${command} --version >/dev/null 2>/dev/null; then
mkisofs=(${command})
break
fi
done
if [ -z "${mkisofs}" ]; then
echo "${0}: mkisofs or genisoimage not found, please install or set PATH" >&2
exit 1
fi
dir=$(mktemp -d bin/iso.dir.XXXXXX)
cfg=${dir}/isolinux.cfg
mkisofs+=(-quiet -l -volid "iPXE" -preparer "iPXE build system"
-appid "iPXE ${VERSION} - Open Source Network Boot Firmware"
-publisher "http://ipxe.org/" -c boot.cat)
# generate the config
cat > ${cfg} <<EOF
# These default options can be changed in the geniso script
SAY iPXE ISO boot image
TIMEOUT 30
EOF
for f; do
if [ ! -r ${f} ]; then
echo "${f} does not exist, skipping" >&2
continue
fi
b=$(basename ${f})
g=${b%.lkrn}
g=${g//[^a-z0-9]}
g=${g:0:8}.krn
case "${FIRST}" in
"")
echo "DEFAULT ${b}"
FIRST=${g}
;;
esac
echo "LABEL ${b}"
echo " KERNEL ${g}"
cp ${f} ${dir}/${g}
done >> ${cfg}
case "${LEGACY}" in
1)
# check for mtools
case "$(mtools -V)" in
Mtools\ version\ 3.9.9*|Mtools\ version\ 3.9.1[0-9]*|[mM]tools\ *\ [4-9].*)
;;
*)
echo "Mtools version 3.9.9 or later is required" >&2
exit 1
;;
esac
# generate floppy image
img=${dir}/boot.img
mformat -f 1440 -C -i ${img} ::
# copy lkrn file to floppy image
for f in ${dir}/*.krn; do
mcopy -m -i ${img} ${f} ::$(basename ${g})
rm -f ${f}
done
# copy config file to floppy image
mcopy -i ${img} ${cfg} ::syslinux.cfg
rm -f ${cfg}
# write syslinux bootloader to floppy image
if ! syslinux ${img}; then
echo "${0}: failed writing syslinux to floppy image ${img}" >&2
exit 1
fi
# generate the iso image
"${mkisofs[@]}" -b boot.img -output ${OUT} ${dir}
;;
0)
# copy isolinux bootloader
cp ${ISOLINUX_BIN} ${dir}
# syslinux 6.x needs a file called ldlinux.c32
LDLINUX_C32=$(dirname ${ISOLINUX_BIN})/ldlinux.c32
if [ -s ${LDLINUX_C32} ]; then
cp ${LDLINUX_C32} ${dir}
fi
# generate the iso image
"${mkisofs[@]}" -b isolinux.bin -no-emul-boot -boot-load-size 4 -boot-info-table -output ${OUT} ${dir}
# isohybrid will be used if available
if isohybrid --version >/dev/null 2>/dev/null; then
isohybrid ${OUT} >/dev/null
fi
;;
esac
# clean up temporary dir
rm -fr ${dir}
|
