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https://git.launchpad.net/livecd-rootfs
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06defc4348
Now that we have the cloud-minimal seed for minimized cloud image builds, we should drop all the workarounds and hacks we once needed when we were using the server seed. We can directly use the new metapackage and get rid of the tasks and other autoremoves, et al.
238 lines
6.9 KiB
Bash
Executable File
238 lines
6.9 KiB
Bash
Executable File
#!/bin/bash -x
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rootd="${1:-/}"
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root_fs_label=cloudimg-rootfs
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set -ex
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. /root/config/chroot
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CLOUD_IMG_STR="# CLOUD_IMG: This file was created/modified by the Cloud Image build process"
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LANG=C
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_xchroot() {
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# Prevent multiple chroots
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if [ "$1" = "/" ]; then
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shift;
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"$@"
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else
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chroot "$@"
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fi
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}
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#### COMMON architecture independent functions
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arch=$(_xchroot "${rootd}" dpkg --print-architecture)
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## --------------
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# remove 127.0.1.1 entry (LP: #440757)
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_xchroot "${rootd}" sh -c 'sed -i "/^127.0.1.1/d" /etc/hosts'
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## --------------
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# remove ssh pregenerated keys (LP: #512377)
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_xchroot "${rootd}" sh -c 'rm -f /etc/ssh/ssh_host_[rd]sa_key*'
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## --------------
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if [ "${SUBPROJECT:-}" != minimized ]; then
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_xchroot "${rootd}" locale-gen en_US.utf8
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fi
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## --------------
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# We continue to pre-generate en_US.UTF-8 locale above, but the default locale
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# should be C.UTF-8 for 17.10 and later. For earlier releases, cloud-init may
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# override this.
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echo LANG="C.UTF-8" > "${rootd}/etc/default/locale"
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## --------------
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# set cloud-init to be on
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values="NoCloud, ConfigDrive, AltCloud, OVF, MAAS, Ec2, None"
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printf "%s\t%s\t%s\t%s\n" \
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cloud-init cloud-init/datasources multiselect "$values" |
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_xchroot "${rootd}" debconf-set-selections
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_xchroot "${rootd}" dpkg-reconfigure --frontend=noninteractive cloud-init
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## --------------
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# write some build information to the guest
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# the idea is that given runtime info and this info, the instance
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# can at least determine if there is a newer build available
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# these variables are passed in in environment from cloudimg-build-launcher
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if [ -n "${build_name}" -o -n "${serial}" ]; then
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d="${rootd}/etc/cloud"
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[ -d "$d" ] || mkdir -p "${d}"
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{
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[ -n "${build_name}" ] && echo "build_name: ${build_name}"
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[ -n "${serial}" ] && echo "serial: ${serial}"
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} > "$d/build.info"
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fi
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## --------------
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# for maverick and newer, use LABEL= for the '/' entry in fstab
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if [ -n "${root_fs_label}" ]; then
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bl="[:blank:]"
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lstr="LABEL=${root_fs_label}"
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sed -i "s,^[^#${bl}]*\([${bl}]*/[${bl}].*\),${lstr}\1," "${rootd}/etc/fstab"
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fi
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cat > /etc/fstab << EOM
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LABEL=cloudimg-rootfs / ext4 discard,commit=30,errors=remount-ro 0 1
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EOM
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# for quantal and newer, add /etc/overlayroot.local.conf
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# but do not overwrite anything that somehow got there
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if [ -f "${rootd}/etc/overlayroot.conf" ] &&
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[ ! -f "${rootd}/etc/overlayroot.local.conf" ]; then
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{
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echo "${CLOUD_IMG_STR}"
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echo "overlayroot_cfgdisk=LABEL=OROOTCFG"
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} > "${rootd}/etc/overlayroot.local.conf"
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fi
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# previous steps may have left a dangling symlink here with
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# SUBPROJECT=minimized and that breaks lb_chroot_hacks step
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if [ -L "${rootd}/boot/initrd.img" ] && [ ! -e "${rootd}/boot/initrd.img" ]; then
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rm "${rootd}/boot/initrd.img"
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fi
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#### END COMMON ARCH FUNCTIONS
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case $arch in
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# ARM, ppc, riscv64 and s390x images are special
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powerpc|ppc64el|s390x|riscv64)
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exit 0
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;;
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esac
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psuedo_grub_probe() {
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cat <<"PSUEDO_GRUB_PROBE"
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#!/bin/sh
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Usage() {
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cat <<EOF
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Usage: euca-psuedo-grub-probe
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this is a wrapper around grub-probe to provide the answers for an ec2 guest
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EOF
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}
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bad_Usage() { Usage 1>&2; fail "$@"; }
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short_opts=""
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long_opts="device-map:,target:,device"
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getopt_out=$(getopt --name "${0##*/}" \
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--options "${short_opts}" --long "${long_opts}" -- "$@") &&
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eval set -- "${getopt_out}" ||
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bad_Usage
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device_map=""
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target=""
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device=0
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arg=""
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while [ $# -ne 0 ]; do
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cur=${1}; next=${2};
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case "$cur" in
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--device-map) device_map=${next}; shift;;
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--device) device=1;;
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--target) target=${next}; shift;;
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--) shift; break;;
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esac
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shift;
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done
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arg=${1}
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case "${target}:${device}:${arg}" in
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device:*:/*) echo "/dev/sda1"; exit 0;;
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fs:*:*) echo "ext2"; exit 0;;
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partmap:*:*)
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# older versions of grub (lucid) want 'part_msdos' written
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# rather than 'msdos'
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legacy_pre=""
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grubver=$(dpkg-query --show --showformat '${Version}\n' grub-pc 2>/dev/null) &&
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dpkg --compare-versions "${grubver}" lt 1.98+20100804-5ubuntu3 &&
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legacy_pre="part_"
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echo "${legacy_pre}msdos";
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exit 0;;
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abstraction:*:*) echo ""; exit 0;;
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drive:*:/dev/sda) echo "(hd0)";;
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drive:*:/dev/sda*) echo "(hd0,1)";;
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fs_uuid:*:*) exit 1;;
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esac
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PSUEDO_GRUB_PROBE
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}
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## install / setup grub2
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gprobe="${rootd}/usr/sbin/grub-probe"
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moved=0
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if [ -f "${gprobe}" ]; then
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mv "${gprobe}" "${gprobe}.dist"
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moved=1
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fi
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psuedo_grub_probe > "${gprobe}"
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chmod 755 "${gprobe}"
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# for Quantal and later, use /etc/default/grub.d functionality
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# rather than modifying the grub configuration itself.
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# This avoids the mess of having to do dpkg stuff
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# LP: 1179940
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mkdir -p "${rootd}/etc/default/grub.d"
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cat << EOF > "${rootd}/etc/default/grub.d/50-cloudimg-settings.cfg"
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# Cloud Image specific Grub settings for Generic Cloud Images
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${CLOUD_IMG_STR}
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# Set the recordfail timeout
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GRUB_RECORDFAIL_TIMEOUT=0
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# Do not wait on grub prompt
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GRUB_TIMEOUT=0
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# Set the default commandline
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GRUB_CMDLINE_LINUX_DEFAULT="console=tty1 console=ttyS0"
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# Set the grub console type
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GRUB_TERMINAL=console
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EOF
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# Sometimes grub is not installed yet (i.e. uefi arm images). Overall
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# it is odd that we run this out of chroot hooks, instead of binary
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# hooks. I wonder if we can move all of this to disk-image hooks.
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if [ -x "${rootd}/usr/sbin/update-grub" ]; then
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_xchroot "${rootd}" update-grub
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fi
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# reconfigure grub so that upgrades to grub-pc do not force a debconf config
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# changed prompt (LP: #1009294). This re-runs update-grub
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if [ -n "`_xchroot "${rootd}" dpkg-query -W grub-pc 2>/dev/null`" ]; then
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_xchroot "${rootd}" env DEBIAN_FRONTEND=noninteractive \
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dpkg-reconfigure grub-pc
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fi
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grub2cfg="${rootd}/boot/grub/grub.cfg"
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[ ! -f "${grub2cfg}" ] ||
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sed -i -e "s,root=/dev/[hs]da1,root=LABEL=${root_fs_label}," "${grub2cfg}"
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[ ${moved} -eq 0 ] || mv "${gprobe}.dist" "${gprobe}"
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## modify /boot/grub/menu.lst if it exists
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## this is generated at install time by grub-legacy-ec2, but will have
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## devices as found from the _xchroot. Here we write what it will be on ec2
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if [ -f "${rootd}/boot/grub/menu.lst" ]; then
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grub_root="(hd0)"
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linux_root=/dev/sda1
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[ -n "${root_fs_label}" ] && linux_root="LABEL=${root_fs_label}"
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# the sed code below basically fixes/sets the following lines in a
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# /boot/grub/menu.lst file:
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# # kopt=root=xxxxxxx ro
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# kernel /boot/vmlinuz-... root=xxxxxx ....
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# # groot=xxxxx
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# root xxxxx
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# uuuid xxxxx
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sed -i "${rootd}/boot/grub/menu.lst" \
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-e "s|^\(# kopt=root=\)[^ ]*|\1${linux_root}|" \
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-e "s|^\(kernel.*root=\)[^ ]*|\1${linux_root}|" \
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-e "s|^\(# groot=\)[^ ]*|\1${grub_root}|" \
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-e "s|^\(root\|uuid\)\([[:space:]]*\).*|root\2${grub_root}|"
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# grub-legacy-ec2 writes this ucf entry. since we've modified
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# /boot/grub/menu.lst, we have to remove it, or the user will
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# get prompted for a 3 way merge of the changes the first time this runs
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_xchroot "${rootd}" /usr/bin/ucfr --purge grub /var/run/grub/menu.lst
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fi
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# vi: ts=3 expandtab
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