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Diffstat (limited to 'release/amd64/mk-vmimage.sh')
| -rwxr-xr-x | release/amd64/mk-vmimage.sh | 147 |
1 files changed, 147 insertions, 0 deletions
diff --git a/release/amd64/mk-vmimage.sh b/release/amd64/mk-vmimage.sh new file mode 100755 index 000000000000..b717efd6390e --- /dev/null +++ b/release/amd64/mk-vmimage.sh @@ -0,0 +1,147 @@ +#!/bin/sh +#- +# Copyright (c) 2014 The FreeBSD Foundation +# All rights reserved. +# +# This software was developed by Glen Barber under sponsorship +# from the FreeBSD Foundation. +# +# Redistribution and use in source and binary forms, with or without +# modification, are permitted provided that the following conditions +# are met: +# 1. Redistributions of source code must retain the above copyright +# notice, this list of conditions and the following disclaimer. +# 2. Redistributions in binary form must reproduce the above copyright +# notice, this list of conditions and the following disclaimer in the +# documentation and/or other materials provided with the distribution. +# +# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND +# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE +# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +# SUCH DAMAGE. +# +# mk-vmimage.sh: Create virtual machine disk images in various formats. +# +# $FreeBSD$ +# + +PATH="/bin:/usr/bin:/sbin:/usr/sbin" +export PATH + +usage() { + echo "$(basename ${0}) <command> <target> [...]" + exit 1 +} + +panic() { + rc="${1}" + shift 1 + msg="${@}" + printf "${msg}\n" + if [ ! -z "${mddev}" ]; then + mdconfig -d -u ${mddev} + fi + # Do not allow one failure case to chain through any remaining image + # builds. + exit 0 +} + +vm_create_baseimage() { + # Creates the UFS root filesystem for the virtual machine disk, + # written to the formatted disk image with mkimg(1). + i=0 + mkdir -p ${DESTDIR} + truncate -s ${VMSIZE} ${VMBASE} + mddev=$(mdconfig -f ${VMBASE}) + newfs -j /dev/${mddev} + mount /dev/${mddev} ${DESTDIR} + cd ${WORLDDIR} && \ + ${IMAKE} DESTDIR=${DESTDIR} \ + installworld installkernel distribution || \ + panic 1 "\n\nCannot install the base system to ${DESTDIR}." + chroot ${DESTDIR} /usr/bin/newaliases + echo '# Custom /etc/fstab for FreeBSD VM images' \ + > ${DESTDIR}/etc/fstab + echo '/dev/gpt/rootfs / ufs rw 2 2' \ + >> ${DESTDIR}/etc/fstab + echo '/dev/gpt/swapfs none swap sw 0 0' \ + >> ${DESTDIR}/etc/fstab + sync + while ! umount ${DESTDIR}; do + i=$(( $i + 1 )) + if [ $i -ge 10 ]; then + # This should never happen. But, it has happened. + msg="Cannot umount(8) ${DESTDIR}\n" + msg="${msg}Something has gone horribly wrong." + panic 1 "${msg}" + fi + sleep 1 + done + + return 0 +} + +vm_create_vmdisk() { + mkimg_version=$(mkimg --version 2>/dev/null | awk '{print $2}') + + # We need mkimg(1) '--version' output, at minimum, to be able to + # tell what virtual machine disk image formats are available. + # Bail if mkimg(1) reports an empty '--version' value. + if [ -z "${mkimg_version}" ]; then + msg="Cannot determine mkimg(1) version.\n" + msg="${msg}Cannot continue without a known mkimg(1) version." + panic 0 "${msg}" + fi + + if ! mkimg --formats 2>/dev/null | grep -q ${FORMAT}; then + panic 0 "'${FORMAT}' is not supported by this mkimg(1).\n" + fi + + case ${FORMAT} in + vhd) + mkimg_format=vhdf + ;; + *) + mkimg_format=${FORMAT} + ;; + esac + + mkimg -f ${mkimg_format} -s gpt \ + -b /boot/pmbr -p freebsd-boot/bootfs:=/boot/gptboot \ + -p freebsd-swap/swapfs::1G \ + -p freebsd-ufs/rootfs:=${VMBASE} \ + -o ${VMIMAGE} + + return 0 +} + +main() { + cmd="${1}" + + if [ -z "${MAKEFLAGS}" ]; then + echo "It is probably not safe to run this by hand yet..." + fi + + case ${cmd} in + vm-base) + eval vm_create_baseimage "$@" || return 0 + ;; + vm-image) + eval vm_create_vmdisk "$@" || return 0 + ;; + *|\?) + usage + ;; + esac + + return 0 +} + +main "$@" |