157 lines
4.0 KiB
Bash
Executable File
157 lines
4.0 KiB
Bash
Executable File
#!/bin/sh
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#-
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# Copyright (c) 2014 The FreeBSD Foundation
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# All rights reserved.
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#
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# This software was developed by Glen Barber under sponsorship
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# from the FreeBSD Foundation.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# are met:
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# 1. Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# 2. Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution.
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#
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# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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# SUCH DAMAGE.
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#
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# mk-vmimage.sh: Create virtual machine disk images in various formats.
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#
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# $FreeBSD$
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#
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PATH="/bin:/usr/bin:/sbin:/usr/sbin"
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export PATH
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usage() {
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echo "$(basename ${0}) <command> <target> [...]"
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if [ -z "${MAKEFLAGS}" ]; then
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echo "It is probably not safe to run this by hand yet..."
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fi
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exit 1
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}
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panic() {
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rc="${1}"
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shift 1
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msg="${@}"
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printf "${msg}\n"
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if [ ! -z "${mddev}" ]; then
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mdconfig -d -u ${mddev}
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fi
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# Do not allow one failure case to chain through any remaining image
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# builds.
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exit 0
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}
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vm_create_baseimage() {
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# Creates the UFS root filesystem for the virtual machine disk,
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# written to the formatted disk image with mkimg(1).
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i=0
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mkdir -p ${DESTDIR}
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truncate -s ${VMSIZE} ${VMBASE}
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mddev=$(mdconfig -f ${VMBASE})
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newfs -j /dev/${mddev}
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mount /dev/${mddev} ${DESTDIR}
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cd ${WORLDDIR} && \
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${IMAKE} DESTDIR=${DESTDIR} \
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installworld installkernel distribution || \
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panic 1 "\n\nCannot install the base system to ${DESTDIR}."
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chroot ${DESTDIR} /usr/bin/newaliases
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echo '# Custom /etc/fstab for FreeBSD VM images' \
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> ${DESTDIR}/etc/fstab
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echo '/dev/gpt/rootfs / ufs rw 2 2' \
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>> ${DESTDIR}/etc/fstab
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echo '/dev/gpt/swapfs none swap sw 0 0' \
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>> ${DESTDIR}/etc/fstab
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sync
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while ! umount ${DESTDIR}; do
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i=$(( $i + 1 ))
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if [ $i -ge 10 ]; then
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# This should never happen. But, it has happened.
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msg="Cannot umount(8) ${DESTDIR}\n"
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msg="${msg}Something has gone horribly wrong."
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panic 1 "${msg}"
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fi
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sleep 1
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done
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return 0
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}
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vm_create_vmdisk() {
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mkimg_version=$(mkimg --version 2>/dev/null | awk '{print $2}')
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# We need mkimg(1) '--version' output, at minimum, to be able to
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# tell what virtual machine disk image formats are available.
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# Bail if mkimg(1) reports an empty '--version' value.
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if [ -z "${mkimg_version}" ]; then
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msg="Cannot determine mkimg(1) version.\n"
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msg="${msg}Cannot continue without a known mkimg(1) version."
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panic 0 "${msg}"
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fi
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if ! mkimg --formats 2>/dev/null | grep -q ${FORMAT}; then
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panic 0 "'${FORMAT}' is not supported by this mkimg(1).\n"
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fi
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case ${FORMAT} in
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vhd)
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mkimg_format=vhdf
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;;
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*)
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mkimg_format=${FORMAT}
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;;
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esac
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mkimg -f ${mkimg_format} -s gpt \
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-b /boot/pmbr -p freebsd-boot/bootfs:=/boot/gptboot \
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-p freebsd-swap/swapfs::1G \
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-p freebsd-ufs/rootfs:=${VMBASE} \
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-o ${VMIMAGE}
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return 0
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}
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main() {
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cmd="${1}"
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case ${TARGET}/${TARGET_ARCH} in
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amd64/amd64|i386/i386)
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# FALLTHROUGH
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;;
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*)
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# EX_CANTCREAT
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return 0
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;;
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esac
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case ${cmd} in
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vm-base)
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eval vm_create_baseimage "$@" || return 0
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;;
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vm-image)
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eval vm_create_vmdisk "$@" || return 0
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;;
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*|\?)
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usage
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;;
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esac
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return 0
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}
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main "$@"
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