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