mirror of
https://git.launchpad.net/livecd-rootfs
synced 2026-02-18 16:03:30 +00:00
16c064a241
Imported using git-ubuntu import.
Changelog parent: 118c6476a962cbdc0a61dd8384f65265a9cb8e98
New changelog entries:
[ Gary Wang ]
* Add the IMAGEFORMAT=none to support generating a single rootfs
(LP: #1730642)
[ Christopher Glass (Ubuntu) ]
* Backport "minimized round 2" changes from trunk to Xenial (LP: #1731492)
* Remove apt, debconf, dpkg cruft files from /var/cache and /var/lib in
all our livefses.
* Pass --cache false to lb config; otherwise we copy around caches of
.debs that are never used properly, and which prevent us from emptying
/var/cache/apt in images.
* When building minimized cloud images, remove various packages that we
don't want installed by default. Some are tools that aren't needed for
non-interactive use; some are libraries whose reverse-dependencies
will have already been removed; and one, open-vm-tools, should only be
included in images that are targeted to VMWare (which is not the case
for any of the current minimal images), rather than being included
directly in the cloud-image seed.
346 lines
10 KiB
Bash
Executable File
346 lines
10 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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add_serial_console() {
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condev=$1
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idir="$rootd/etc/init"
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cat << EOF > "${idir}/${condev}.conf"
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# CONDEV - getty
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#
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# This service maintains a getty on CONDEV from the point the system is
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# started until it is shut down again.
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start on stopped rc RUNLEVEL=[2345] and (
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not-container or
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container CONTAINER=lxc or
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container CONTAINER=lxc-libvirt)
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stop on runlevel [!2345]
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pre-start script
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# getty will not be started if the serial console is not present
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stty -F /dev/CONDEV -a 2> /dev/null > /dev/null || { stop ; exit 0; }
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end script
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respawn
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script
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exec /sbin/getty -L CONDEV 115200 vt102
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end script
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${CLOUD_IMG_STR}
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EOF
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sed -i "s/CONDEV/${condev}/g" "$idir/${condev}.conf"
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}
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fake_cloud_init() {
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# If the cloud does not provide a meta-data service this should be run
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# This will setup a nocloud datasource.
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seed_d="${rootd}/var/lib/cloud/seed/nocloud-net"
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mkdir -p "${seed_d}"
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# fake instance-id
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cat << EOF > "${seed_d}/meta-data"
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instance_id: cloud-image
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EOF
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# fake user-data to create the default user/password
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cat << EOF > "${seed_d}/user-data"
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#cloud-config
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password: ubuntu
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chpasswd: ubuntu
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ssh_pwauth: True
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EOF
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# tell cloud-init not to look for meta-data sources
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cat << EOF > ${rootd}/etc/cloud/cloud.cfg.d/99-fake_cloud.cfg
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# configure cloud-init for NoCloud
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datasource_list: [ NoCloud, None ]
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EOF
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}
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## --------------
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# remove 127.0.1.1 entry (LP: #440757)
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_xchroot "${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 "${rootd}" locale-gen en_US.utf8
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fi
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## --------------
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# set cloud-init to be on
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values="NoCloud, ConfigDrive, AltCloud, OVF, MAAS, Ec2, None"
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printf "%s\t%s\t%s\t%s\n" \
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cloud-init cloud-init/datasources multiselect "$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 defaults 0 0
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EOM
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## Make sure that the update-motd.d directory exists
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[ ! -e "${rootd}/etc/update-motd.d" ] &&
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mkdir -p "${rootd}/etc/update-motd.d"
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## write a MOTD file advertising support for images
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cat > "${rootd}/etc/update-motd.d/51-cloudguest" << EOF
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#!/bin/sh
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#
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${CLOUD_IMG_STR}
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# This file is not managed by a package. If you no longer want to
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# see this message you can safely remove the file.
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echo ""
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echo " Get cloud support with Ubuntu Advantage Cloud Guest:"
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echo " http://www.ubuntu.com/business/services/cloud"
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EOF
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chmod +x "${rootd}/etc/update-motd.d/51-cloudguest"
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# for quantal and newer, add /etc/overlayroot.local.conf
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# but do not overwrite anything that somehow got there
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if [ -f "${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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if [ "${SUBPROJECT:-}" = minimized ]; then
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# Remove various packages that we don't want in the minimized images.
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# Some of these are tools that don't make sense by default
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# non-interactively; some are libraries whose reverse-dependencies
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# will have already been removed; open-vm-tools, it's a bug that this
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# is in the common cloud seed because this should only be included
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# in VMWare guest images, and we know none of the minimized images
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# are targeted at VMWare.
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_xchroot "${rootd}" env DEBIAN_FRONTEND=noninteractive \
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apt-mark auto '^lib.*' '^python*' vim-runtime 2>/dev/null
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# FIXME: iso-codes is a dep of software-properties and shouldn't be
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_xchroot "${rootd}" env DEBIAN_FRONTEND=noninteractive \
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apt-get -y autoremove --purge iso-codes xauth pastebinit \
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plymouth open-vm-tools git shared-mime-info vim vim-common \
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console-setup ncurses-term tmux screen policykit-1 \
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xdg-user-dirs less run-one apport-symptoms \
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ubuntu-cloudimage-keyring file
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_xchroot "${rootd}" apt clean
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fi
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#### END COMMON ARCH FUNCTIONS
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case $arch in
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# ARM images are special
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armhf|arm64)
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echo "Configuring ARM Serial Port"
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add_serial_console ttyAMA0
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# Dirty hack because SUBARCH doesn't exist when running chroot hooks,
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# and we don't want raspi2 images to depend on a cloud data source:
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if _xchroot "${rootd}" dpkg -l linux-image-raspi2 2>/dev/null | grep -q '^.i'; then
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fake_cloud_init
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fi
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echo "Image architecture is ARM. Existing vmbuilder-fixups"
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exit 0
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;;
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## Add ttyS0 for i386/amd64 for Trusty and newer
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i386|amd64)
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add_serial_console ttyS0
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;;
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powerpc|ppc64el)
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add_serial_console hvc0
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exit 0
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;;
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s390x)
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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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${CLOUD_IMG_STR}
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# Set the recordfail timeout
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GRUB_RECORDFAIL_TIMEOUT=0
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# Do not wait on grub prompt
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GRUB_TIMEOUT=0
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# Set the default commandline
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GRUB_CMDLINE_LINUX_DEFAULT="console=tty1 console=ttyS0"
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# Set the grub console type
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GRUB_TERMINAL=console
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EOF
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_xchroot "${rootd}" update-grub2
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# since this is a disk image, we technically don't need to install all the
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# grub modules, as the image itself is not bootable. This makes for a small
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# disk image
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_xchroot "${rootd}" update-grub
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# reconfigure grub so that upgrades to grub-pc do not force a debconf config
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# changed prompt (LP: #1009294). This re-runs update-grub
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_xchroot "${rootd}" env DEBIAN_FRONTEND=noninteractive \
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dpkg-reconfigure grub-pc
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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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