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https://github.com/freebsd/freebsd-src
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Use makefs(8) in release VM-image generation instead of md(4) and newfs.
Using makefs instead reduces the privileges needed to build VM images, simplifies the script (no need to copy files to a fresh image at the end), and improves portability by allowing generation of cross-endian images. As a result of the last, this patch also adds support for generation of powerpc64 and powerpc64le VM images. No other changes to the output. Tested and working for both amd64 and powerpc64 targets. Reviewed by: gjb Differential Revision: https://reviews.freebsd.org/D28912
This commit is contained in:
Nathan Whitehorn
parent
ef567155d3
commit
1ca8842f3a
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@ -93,8 +93,6 @@ main() {
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. "${VMCONFIG}"
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fi
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ROOTLABEL="gpt"
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vm_create_base
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vm_install_base
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vm_extra_install_base
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@ -12,70 +12,17 @@ scriptdir=$(dirname $(realpath $0))
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export PATH="/bin:/usr/bin:/sbin:/usr/sbin:/usr/local/bin:/usr/local/sbin"
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trap "cleanup" INT QUIT TRAP ABRT TERM
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write_partition_layout() {
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if [ -z "${NOSWAP}" ]; then
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SWAPOPT="-p freebsd-swap/swapfs::${SWAPSIZE}"
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fi
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BOOTFILES="$(env TARGET=${TARGET} TARGET_ARCH=${TARGET_ARCH} \
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WITH_UNIFIED_OBJDIR=yes \
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make -C ${WORLDDIR}/stand -V .OBJDIR)"
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BOOTFILES="$(realpath ${BOOTFILES})"
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case "${TARGET}:${TARGET_ARCH}" in
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amd64:amd64 | i386:i386)
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ESP=yes
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SCHEME=gpt
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BOOTPARTS="-b ${BOOTFILES}/i386/pmbr/pmbr \
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-p freebsd-boot/bootfs:=${BOOTFILES}/i386/gptboot/gptboot"
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ROOTFSPART="-p freebsd-ufs/rootfs:=${VMBASE}"
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;;
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arm64:aarch64 | riscv:riscv64*)
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ESP=yes
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SCHEME=gpt
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BOOTPARTS=
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ROOTFSPART="-p freebsd-ufs/rootfs:=${VMBASE}"
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;;
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powerpc:powerpc*)
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ESP=no
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SCHEME=apm
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BOOTPARTS="-p apple-boot/bootfs:=${BOOTFILES}/powerpc/boot1.chrp/boot1.hfs"
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ROOTFSPART="-p freebsd-ufs/rootfs:=${VMBASE}"
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;;
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*)
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echo "vmimage.subr: unsupported target '${TARGET}:${TARGET_ARCH}'" >&2
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exit 1
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;;
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esac
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if [ ${ESP} = "yes" ]; then
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# Create an ESP
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espfilename=$(mktemp /tmp/efiboot.XXXXXX)
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make_esp_file ${espfilename} ${fat32min} ${BOOTFILES}/efi/loader_lua/loader_lua.efi
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BOOTPARTS="${BOOTPARTS} -p efi/efiesp:=${espfilename}"
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# Add this to fstab, requires temporarily remounting the fs
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mddev=$(mdconfig -f ${VMBASE})
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mount /dev/${mddev} ${DESTDIR}
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mkdir -p ${DESTDIR}/boot/efi
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echo "/dev/${ROOTLABEL}/efiesp /boot/efi msdosfs rw 2 2" \
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>> ${DESTDIR}/etc/fstab
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umount ${DESTDIR}
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mdconfig -d -u ${mddev}
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fi
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mkimg -s ${SCHEME} -f ${VMFORMAT} \
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${BOOTPARTS} \
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${SWAPOPT} \
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${ROOTFSPART} \
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-o ${VMIMAGE}
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if [ ${ESP} = "yes" ]; then
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rm ${espfilename}
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fi
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return 0
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}
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# Platform-specific large-scale setup
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# Most platforms use GPT, so put that as default, then special cases
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PARTSCHEME=gpt
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ROOTLABEL="gpt"
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case "${TARGET}:${TARGET_ARCH}" in
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powerpc:powerpc*)
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PARTSCHEME=mbr
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ROOTLABEL="ufs"
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NOSWAP=yes # Can't label swap partition with MBR, so no swap
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;;
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esac
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err() {
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printf "${@}\n"
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@ -87,10 +34,6 @@ cleanup() {
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if [ -c "${DESTDIR}/dev/null" ]; then
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umount_loop ${DESTDIR}/dev 2>/dev/null
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fi
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umount_loop ${DESTDIR}
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if [ ! -z "${mddev}" ]; then
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mdconfig -d -u ${mddev}
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fi
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return 0
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}
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@ -100,42 +43,12 @@ vm_create_base() {
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# written to the formatted disk image with mkimg(1).
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mkdir -p ${DESTDIR}
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truncate -s ${VMSIZE} ${VMBASE}
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mddev=$(mdconfig -f ${VMBASE})
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newfs -L rootfs /dev/${mddev}
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mount /dev/${mddev} ${DESTDIR}
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return 0
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}
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vm_copy_base() {
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# Creates a new UFS root filesystem and copies the contents of the
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# current root filesystem into it. This produces a "clean" disk
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# image without any remnants of files which were created temporarily
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# during image-creation and have since been deleted (e.g., downloaded
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# package archives).
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mkdir -p ${DESTDIR}/old
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mdold=$(mdconfig -f ${VMBASE})
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mount /dev/${mdold} ${DESTDIR}/old
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truncate -s ${VMSIZE} ${VMBASE}.tmp
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mkdir -p ${DESTDIR}/new
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mdnew=$(mdconfig -f ${VMBASE}.tmp)
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newfs -L rootfs /dev/${mdnew}
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mount /dev/${mdnew} ${DESTDIR}/new
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tar -cf- -C ${DESTDIR}/old . | tar -xUf- -C ${DESTDIR}/new
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umount_loop /dev/${mdold}
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rmdir ${DESTDIR}/old
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mdconfig -d -u ${mdold}
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umount_loop /dev/${mdnew}
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rmdir ${DESTDIR}/new
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tunefs -n enable /dev/${mdnew}
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mdconfig -d -u ${mdnew}
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mv ${VMBASE}.tmp ${VMBASE}
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# Defunct
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}
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vm_install_base() {
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@ -276,7 +189,71 @@ vm_create_disk() {
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echo "Creating image... Please wait."
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echo
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write_partition_layout || return 1
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if [ -z "${NOSWAP}" ]; then
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SWAPOPT="-p freebsd-swap/swapfs::${SWAPSIZE}"
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fi
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BOOTFILES="$(env TARGET=${TARGET} TARGET_ARCH=${TARGET_ARCH} \
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WITH_UNIFIED_OBJDIR=yes \
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make -C ${WORLDDIR}/stand -V .OBJDIR)"
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BOOTFILES="$(realpath ${BOOTFILES})"
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case "${TARGET}:${TARGET_ARCH}" in
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amd64:amd64 | i386:i386)
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ESP=yes
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BOOTPARTS="-b ${BOOTFILES}/i386/pmbr/pmbr \
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-p freebsd-boot/bootfs:=${BOOTFILES}/i386/gptboot/gptboot"
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ROOTFSPART="-p freebsd-ufs/rootfs:=${VMBASE}"
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MAKEFSARGS="-B little"
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;;
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arm64:aarch64 | riscv:riscv64*)
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ESP=yes
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BOOTPARTS=
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ROOTFSPART="-p freebsd-ufs/rootfs:=${VMBASE}"
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MAKEFSARGS="-B little"
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;;
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powerpc:powerpc*)
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ESP=no
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BOOTPARTS="-p prepboot:=${BOOTFILES}/powerpc/boot1.chrp/boot1.elf -a 1"
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ROOTFSPART="-p freebsd:=${VMBASE}"
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if [ ${TARGET_ARCH} = powerpc64le ]; then
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MAKEFSARGS="-B little"
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else
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MAKEFSARGS="-B big"
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fi
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;;
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*)
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echo "vmimage.subr: unsupported target '${TARGET}:${TARGET_ARCH}'" >&2
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exit 1
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;;
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esac
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if [ ${ESP} = "yes" ]; then
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# Create an ESP
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espfilename=$(mktemp /tmp/efiboot.XXXXXX)
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make_esp_file ${espfilename} ${fat32min} ${BOOTFILES}/efi/loader_lua/loader_lua.efi
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BOOTPARTS="${BOOTPARTS} -p efi/efiesp:=${espfilename}"
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# Add this to fstab
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mkdir -p ${DESTDIR}/boot/efi
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echo "/dev/${ROOTLABEL}/efiesp /boot/efi msdosfs rw 2 2" \
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>> ${DESTDIR}/etc/fstab
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fi
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echo "Building filesystem... Please wait."
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makefs ${MAKEFSARGS} -o label=rootfs -o version=2 -o softupdates=1 \
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-s ${VMSIZE} ${VMBASE} ${DESTDIR}
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echo "Building final disk image... Please wait."
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mkimg -s ${PARTSCHEME} -f ${VMFORMAT} \
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${BOOTPARTS} \
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${SWAPOPT} \
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${ROOTFSPART} \
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-o ${VMIMAGE}
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if [ ${ESP} = "yes" ]; then
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rm ${espfilename}
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fi
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return 0
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}
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