X-Git-Url: https://git.sommitrealweird.co.uk/lxc-debian-unprivileged.git/blobdiff_plain/52ca390d2feaf98a9e11ee7fea0ed70aa36a2287..93d38eb89c0b281584fc66dc8bf9e7a1868e903b:/templates/lxc-debian-unprivileged diff --git a/templates/lxc-debian-unprivileged b/templates/lxc-debian-unprivileged index 5c5f085..9cbd7c0 100755 --- a/templates/lxc-debian-unprivileged +++ b/templates/lxc-debian-unprivileged @@ -31,11 +31,15 @@ done if [ "$MAPPED" == "no" ]; then echo "This template can only be used for unprivileged containers." 1>&2 - echo "You might want the \"debian\" template instead." 1|&2 + echo "You might want the \"debian\" template instead." 1>&2 + exit 1 fi +set -e +set -u + # Make sure the usual locations are in PATH -export PATH=$PATH:/usr/sbin:/usr/bin:/sbin:/bin +export PATH=/usr/sbin:/usr/bin:/sbin:/bin:$PATH export GREP_OPTIONS="" usage() { @@ -50,11 +54,40 @@ Required arguments: Optional arguments: [ -m | --mirror ]: The debian mirror to user +[ -n | --network ]: How to configure networking + +Network spec: + [,options] + + type is one of: + dhcp4: v4 dhcp will be enabled. + dhcp6: v6 dhcp will be enabled. + dhcp: v4 and v6 dhcp will be enabled. + static: no dhcp will be enabled + + options: + this is a , seperated list, and sets up static assignments for v4 or v6, + regardless of type. + The order of arguments is + staticv4/staticnetmask + staticv6/staticv6netmask + gateway + v6gateway + + examples: + + --network dhcp4 (default) + --network dhcp6 (v6 dhcp) + --network dhcp (v4 and v6 dhcp) + --network dhcp4,,2001:db8:1234:5678::1/64 (dhcp4 and static v6 address) + --network static,,2001:db8:1234:5678::5/64,,fe80::1 (static v6) + --network static,192.0.2.15/24,,192.0.2.1 (static v4) + EOF return 0 } -options=$(getopt -o r:m:h -l release:,mirror:,help,mapped-uid:,mapped-gid:,name:,path:,rootfs: -- "$@") +options=$(getopt -o r:m:n:h -l release:,mirror:,network:,help,mapped-uid:,mapped-gid:,name:,path:,rootfs: -- "$@") if [ $? -ne 0 ]; then usage @@ -63,100 +96,275 @@ fi eval set -- "$options" -DEBIAN_MIRROR="http://mirror.mythic-beasts.com/debian/" +DEBIAN_MIRROR_DEFAULT="http://mirror.sommitrealweird.co.uk/debian/" +DEBIAN_MIRROR=$DEBIAN_MIRROR_DEFAULT DEBIAN_RELEASE="jessie" +NETWORK_CONFIG="" + +disable_initscripts() { + cat < "${LXC_ROOTFS}/usr/sbin/policy-rc.d" +#!/bin/sh + +exit 101 +EOF + chmod 755 "${LXC_ROOTFS}/usr/sbin/policy-rc.d" +} + +enable_initscripts() { + if [ -e "${LXC_ROOTFS}/usr/sbin/policy-rc.d" ]; then + rm "${LXC_ROOTFS}/usr/sbin/policy-rc.d" + fi +} while :; do case "$1" in -h|--help) usage && exit 1;; - -r|--release) DEBIAN_RELEASE=$2; shift 2;; - -m|--mirror) DEBIAN_MIRROR=$2; shift 2;; - --mapped-uid) MAPPED_UID=$2; shift 2;; - --mapped-gid) MAPPED_GID=$2; shift 2;; - --name) LXC_NAME=$2; shift 2;; - --path) LXC_PATH=$2; shift 2;; - --rootfs) LXC_ROOTFS=$2; shift 2;; + -r|--release) DEBIAN_RELEASE="$2"; shift 2;; + -m|--mirror) DEBIAN_MIRROR="$2"; shift 2;; + -n|--network) NETWORK_CONFIG="$2"; shift 2;; + --mapped-uid) MAPPED_UID="$2"; shift 2;; + --mapped-gid) MAPPED_GID="$2"; shift 2;; + --name) LXC_NAME="$2"; shift 2;; + --path) LXC_PATH="$2"; shift 2;; + --rootfs) LXC_ROOTFS="$2"; shift 2;; *) break;; esac done -echo "Mapped UID: $MAPPED_UID" -echo "Mapped GID: $MAPPED_GID" -echo "RootFS: $LXC_ROOTFS" -echo "Name: $LXC_NAME" -echo "Path: $LXC_PATH" +if [ "$DEBIAN_RELEASE" == "squeeze" ] || [ "$DEBIAN_RELEASE" == "lenny" ] || [ "$DEBIAN_RELEASE" == "etch" ]; then + if [ "$DEBIAN_MIRROR" == "$DEBIAN_MIRROR_DEFAULT" ]; then + DEBIAN_MIRROR="http://archive.debian.org/debian/" + fi +fi + +INTERFACE_DEFAULTS="auto eth0 +iface eth0 inet dhcp" + +generate_network_config() { + if [ "$NETWORK_CONFIG" == "" ]; then + echo "$INTERFACE_DEFAULTS" + return 0 + fi + + ETH0_HEADER="auto eth0" + ETH0_IPV4="" + ETH0_IPV6="" + + echo "auto eth0" + # see if there's a type + network_type=${NETWORK_CONFIG/,*} + other_params=${NETWORK_CONFIG#*,} + + v4_configured=no + v6_configured=no + + if [ "$network_type" == "dhcp" ]; then + ETH0_IPV4="iface eth0 inet dhcp" + ETH0_IPV6="iface eth0 inet6 dhcp" + v4_configured=yes + v6_configured=yes + elif [ "$network_type" == "dhcp4" ]; then + ETH0_IPV4="iface eth0 inet dhcp" + v4_configured=yes + elif [ "$network_type" == "dhcp6" ]; then + ETH0_IPV6="iface eth0 inet6 dhcp" + v6_configured=yes + elif [ "$network_type" != "static" ]; then + echo "Unknown network type: $network_type" 1>&2 + echo 1>&2 + usage 1>&2 + exit 1 + fi + + [ "$network_type" == "$other_params" ] && return 0 + + v4_static=${other_params/,*} + other_params=${other_params#*,} + + if [ "$v4_static" != "" ]; then + if [ "$v4_configured" == "yes" ]; then + echo "Both v4 DHCP and Static - giving up." 1>&2 + echo 1>&2 + usage 1>&2 + exit 1 + fi + fi + + if [ "$v4_static" == "$other_params" ]; then + if [ "$v4_static" != "" ]; then + echo "iface eth0 inet static" + echo " address $v4_static" + fi + fi + + v6_static=${other_params/,*} + other_params=${other_params#*,} + + if [ "$v6_static" != "" ]; then + if [ "$v6_configured" == "yes" ]; then + echo "Both v6 DHCP and Static - giving up." 1>&2 + echo 1>&2 + usage 1>&2 + exit 1 + fi + fi + + if [ "$v6_static" == "$other_params" ]; then + if [ "$v4_static" ]; then + echo "iface eth0 inet static" + echo " address $v4_static" + echo + fi + + echo "iface eth0 inet6 static" + echo " address $v6_static" + + return 0 + fi + + v4_gateway=${other_params/,*} + other_params=${other_params#*,} + + if [ "$v4_gateway" == "$other_params" ]; then + if [ "$v4_static" != "" ]; then + echo "iface eth0 inet static" + echo " address $v4_static" + [ "$v4_gateway" != "" ] && echo " gateway $v4_gateway" + + if [ "$v6_static" != "" ]; then + echo "iface eth0 inet6 static" + echo " address $v6_static" + fi + + return 0 + fi + + if [ "$v4_configured" == "yes" ]; then + echo "DHCP and static gateway not supported, giving up." 1>&2 + echo 1>&2 + usage 1>&2 + exit 1 + fi + fi + + v6_gateway=${other_params/,*} + + if [ "$v4_static" != "" ]; then + echo "iface eth0 inet static" + echo " address $v4_static" + [ "$v4_gateway" != "" ] && echo " gateway $v4_gateway" + echo + fi + + if [ "$v6_static" != "" ]; then + echo "iface eth0 inet6 static" + echo " address $v6_static" + [ "$v6_gateway" != "" ] && echo " gateway $v6_gateway" + fi + + return 0 +} + +INTERFACE_DETAILS="$(generate_network_config)" # rewrite the default config file -sed -i -e "/lxc./{w ${LXC_PATH}/config-auto" -e "d}" ${LXC_PATH}/config -sed -i -e '4,$d' ${LXC_PATH}/config +sed -i -e "/lxc./{w ${LXC_PATH}/config-auto" -e "d}" "${LXC_PATH}/config" +sed -i -e '4,$d' "${LXC_PATH}/config" -cat <> ${LXC_PATH}/config +cat <> "${LXC_PATH}/config" # Useful includes lxc.include = /usr/share/lxc/config/debian.common.conf lxc.include = /usr/share/lxc/config/debian.userns.conf -# Set our hostname -lxc.utsname = $LXC_NAME +# Set hostname +lxc.uts.name = $LXC_NAME # Automatic configuration EOF # add back in the auto foo -cat "${LXC_PATH}/config-auto" >> ${LXC_PATH}/config -rm ${LXC_PATH}/config-auto +cat "${LXC_PATH}/config-auto" >> "${LXC_PATH}/config" +rm "${LXC_PATH}/config-auto" -mkdir ${LXC_PATH}/bin -cat < ${LXC_PATH}/bin/mknod +mkdir "${LXC_PATH}/bin" +cat < "${LXC_PATH}/bin/mknod" #!/bin/sh -exec touch "\$1" +# look for the first argument that looks like a path +for i do + case \$i in + /*) + exec touch "\$i" + ;; + esac +done + EOF -chmod 755 ${LXC_PATH}/bin/mknod +chmod 755 "${LXC_PATH}/bin/mknod" + +export PATH="${LXC_PATH}/bin:$PATH" + +DEBOOTSTRAPOPTIONS="" +STANDARDPACKAGES="debian-archive-keyring,ifupdown,isc-dhcp-client,locales,openssh-server" + +if [ "$DEBIAN_RELEASE" == "squeeze" ] || [ "$DEBIAN_RELEASE" == "lenny" ] || [ "$DEBIAN_RELEASE" == "etch" ]; then + DEBOOTSTRAPOPTIONS="--no-check-gpg" +fi + +if [ "$DEBIAN_RELEASE" == "lenny" ] || [ "$DEBIAN_RELEASE" == "etch" ]; then + STANDARDPACKAGES="debian-archive-keyring,ifupdown,locales,openssh-server" +fi -export PATH=${LXC_PATH}/bin:$PATH +debootstrap $DEBOOTSTRAPOPTIONS --foreign --include "${STANDARDPACKAGES}" $DEBIAN_RELEASE "${LXC_ROOTFS}" $DEBIAN_MIRROR -debootstrap --foreign --include debian-archive-keyring,ifupdown,isc-dhcp-client,locales $DEBIAN_RELEASE ${LXC_ROOTFS} $DEBIAN_MIRROR +echo "DEBOOTSTRAP STAGE 1 COMPLETE" # now totally skip that check in the new root, because it sucks. -sed -i -e 's#check_sane_mount () {#check_sane_mount () {\n\treturn 0#;' ${LXC_ROOTFS}/debootstrap/functions +sed -i -e 's#check_sane_mount () {#check_sane_mount () {\n\treturn 0#;' "${LXC_ROOTFS}/debootstrap/functions" # and stop it from bothering to try to setup proc -sed -i -e 's#setup_proc () {#setup_proc () {\n\treturn 0#;' ${LXC_ROOTFS}/debootstrap/functions +sed -i -e 's#setup_proc () {#setup_proc () {\n\treturn 0#;' "${LXC_ROOTFS}/debootstrap/functions" -keyring_dpkg=$(sed -ne "/^debian-archive-keyring/ { s#.* ##; p; }" ${LXC_ROOTFS}/debootstrap/debpaths) +keyring_dpkg=$(sed -ne "/^debian-archive-keyring/ { s#.* ##; p; }" "${LXC_ROOTFS}/debootstrap/debpaths") # and unpack debian-archive-keyring, because we'll need that -(cd ${LXC_ROOTFS} && dpkg-deb -x .$keyring_dpkg .) +(cd "${LXC_ROOTFS}" && dpkg-deb -x ".$keyring_dpkg" .) # replace the tar containing devices with something that doesn't contain any -(cd $LXC_ROOTFS/debootstrap && rm devices.tar.gz && tar czvf devices.tar.gz --files-from=/dev/null) +if [ -e "$LXC_ROOTFS/debootstrap/devices.tar.gz" ]; then + (cd "$LXC_ROOTFS/debootstrap" && rm devices.tar.gz && tar czvf devices.tar.gz --files-from=/dev/null) +fi + +# if squeeze, which is totally out of date, then ignore release file expired +if [ "$DEBIAN_RELEASE" == "squeeze" ]; then + echo 'Acquire::Check-Valid-Until "0";' > ${LXC_ROOTFS}/etc/apt/apt.conf.d/squeeze.conf +fi -# and mount a shitload of things for fun and profit... +# and mount a shedload of things for fun and profit... for file in /var/lib/lxcfs/proc/*; do - fname=$(basename $file) - touch ${LXC_ROOTFS}/proc/$fname - mount -n -o bind $file ${LXC_ROOTFS}/proc/$fname + fname="$(basename $file)" + touch "${LXC_ROOTFS}/proc/$fname" + mount -n -o bind "$file" "${LXC_ROOTFS}/proc/$fname" done -for dev in random urandom; do - touch ${LXC_ROOTFS}/dev/$dev - mount -n -o bind /dev/$dev ${LXC_ROOTFS}/dev/$dev +for dev in null random urandom; do + touch "${LXC_ROOTFS}/dev/$dev" + mount -n -o bind /dev/$dev "${LXC_ROOTFS}/dev/$dev" done -# set /proc/cmdline to something silly -echo "debootstrapping - hahaha" > ${LXC_ROOTFS}/proc/cmdline +# set /proc/cmdline to something +echo "debootstrapping" > "${LXC_ROOTFS}/proc/cmdline" # and disable initscripts -cat < ${LXC_ROOTFS}/usr/sbin/policy-rc.d -#!/bin/sh - -exit 101 -EOF +disable_initscripts # and run the second stage -chroot ${LXC_ROOTFS} /debootstrap/debootstrap --second-stage +chroot "${LXC_ROOTFS}" /debootstrap/debootstrap --second-stage + +# make sure that initscripts are still disabled +disable_initscripts # configure locales lang=en_GB.UTF-8 @@ -166,71 +374,111 @@ if [ ! -z "$LANG" ]; then enc=${LANG#*.} fi -cat >> ${LXC_ROOTFS}/etc/locale.gen <> "${LXC_ROOTFS}/etc/locale.gen" < ${LXC_ROOTFS}/etc/timezone + cat /etc/timezone > "${LXC_ROOTFS}/etc/timezone" elif [ -f /etc/sysconfig/clock ]; then . /etc/sysconfig/clock - echo $ZONE > ${LXC_ROOTFS}/etc/timezone + echo $ZONE > "${LXC_ROOTFS}/etc/timezone" fi -chroot ${LXC_ROOTFS} dpkg-reconfigure -f noninteractive tzdata +chroot "${LXC_ROOTFS}" dpkg-reconfigure -f noninteractive tzdata # "setup" networking NETWORK_FILE=/etc/network/interfaces -if [ -e ${LXC_ROOTFS}/etc/network/interfaces.d ]; then +if [ -e "${LXC_ROOTFS}/etc/network/interfaces.d" ]; then NETWORK_FILE=/etc/network/interfaces.d/eth0 fi +# remove some interesting breakages in pam for unpriv foo +sed -i -e 's#^\(session.*required.*pam_loginuid.so\)#\#\1#;' "${LXC_ROOTFS}"/etc/pam.d/* + +# set the hostname +echo $LXC_NAME > "${LXC_ROOTFS}/etc/hostname" + +SECURITY="" +if [ "$DEBIAN_RELEASE" != "sid" ] && [ "$DEBIAN_RELEASE" != "unstable" ]; then + SECURITY="deb http://security.debian.org/ $DEBIAN_RELEASE/updates main" +fi + +if [ "$DEBIAN_RELEASE" == "squeeze" ]; then + SECURITY="deb http://archive.debian.org/debian/ squeeze-lts main" +fi + +if [ "$DEBIAN_RELEASE" == "lenny" ] || [ "$DEBIAN_RELEASE" == "etch" ]; then + SECURITY="" +fi + # setup sources.list -cat < ${LXC_ROOTFS}/etc/apt/sources.list +cat < "${LXC_ROOTFS}/etc/apt/sources.list" deb $DEBIAN_MIRROR $DEBIAN_RELEASE main -deb http://security.debian.org/ $DEBIAN_RELEASE/updates main +$SECURITY EOF -# disable bits of systemd that we hates -chroot $LXC_ROOTFS /usr/sbin/update-rc.d -f checkroot.sh disable > /dev/null 2>&1 -chroot $LXC_ROOTFS /usr/sbin/update-rc.d -f umountfs disable > /dev/null 2>&1 -chroot $LXC_ROOTFS /usr/sbin/update-rc.d -f hwclock.sh disable > /dev/null 2>&1 -chroot $LXC_ROOTFS /usr/sbin/update-rc.d -f hwclockfirst.sh disable > /dev/null 2>&1 - -if [ -e ${LXC_ROOTFS}/etc/systemd/system/ ]; then - touch ${LXC_ROOTFS}/etc/systemd/system/systemd-setup-dgram-qlen.service - touch ${LXC_ROOTFS}/etc/systemd/system/dev-hugepages.mount - touch ${LXC_ROOTFS}/etc/systemd/system/udev.service - touch ${LXC_ROOTFS}/etc/systemd/system/systemd-udevd.service - chroot ${LXC_ROOTFS} systemctl set-default multi-user.target - chroot ${LXC_ROOTFS} ln -s /lib/systemd/system/halt.target /etc/systemd/system/sigpwr.target +# disable bits of systemd / initrd that break things +chroot "${LXC_ROOTFS}" /usr/sbin/update-rc.d -f checkroot.sh disable > /dev/null 2>&1 || true +chroot "${LXC_ROOTFS}" /usr/sbin/update-rc.d -f umountfs disable > /dev/null 2>&1 || true +chroot "${LXC_ROOTFS}" /usr/sbin/update-rc.d -f hwclock.sh disable > /dev/null 2>&1 || true +chroot "${LXC_ROOTFS}" /usr/sbin/update-rc.d -f hwclockfirst.sh disable > /dev/null 2>&1 || true + +if [ -e "${LXC_ROOTFS}/etc/systemd/system/" ]; then + touch "${LXC_ROOTFS}/etc/systemd/system/systemd-setup-dgram-qlen.service" + touch "${LXC_ROOTFS}/etc/systemd/system/dev-hugepages.mount" + touch "${LXC_ROOTFS}/etc/systemd/system/udev.service" + touch "${LXC_ROOTFS}/etc/systemd/system/systemd-udevd.service" + chroot "${LXC_ROOTFS}" systemctl set-default multi-user.target || true + chroot "${LXC_ROOTFS}" ln -s /lib/systemd/system/halt.target /etc/systemd/system/sigpwr.target fi -cat <> ${LXC_ROOTFS}${NETWORK_FILE} -auto eth0 -iface eth0 inet dhcp -EOF +if [ -e "${LXC_ROOTFS}/lib/systemd/system/systemd-journald-audit.socket" ]; then + touch "${LXC_ROOTFS}/etc/systemd/system/systemd-journald-audit.socket" +fi + +echo "$INTERFACE_DETAILS" >> "${LXC_ROOTFS}${NETWORK_FILE}" # and update to the latest security -chroot ${LXC_ROOTFS} apt-get update -chroot ${LXC_ROOTFS} apt-get -y upgrade +chroot "${LXC_ROOTFS}" apt-get update +chroot "${LXC_ROOTFS}" apt-get -y upgrade # if we're all good here, unmount things and clean up -[ -e ${LXC_ROOTFS}/usr/sbin/policy-rc.d ] && rm ${LXC_ROOTFS}/usr/sbin/policy-rc.d -rm ${LXC_ROOTFS}/proc/cmdline +[ -e "${LXC_ROOTFS}/usr/sbin/policy-rc.d" ] && rm "${LXC_ROOTFS}/usr/sbin/policy-rc.d" +rm "${LXC_ROOTFS}/proc/cmdline" -for dev in random urandom; do - umount ${LXC_ROOTFS}/dev/$dev - rm ${LXC_ROOTFS}/dev/$dev +for dev in null random urandom; do + umount "${LXC_ROOTFS}/dev/$dev" + rm "${LXC_ROOTFS}/dev/$dev" done for file in /var/lib/lxcfs/proc/*; do - fname=$(basename $file) - umount ${LXC_ROOTFS}/proc/$fname - rm ${LXC_ROOTFS}/proc/$fname + fname="$(basename $file)" + umount "${LXC_ROOTFS}/proc/$fname" + rm "${LXC_ROOTFS}/proc/$fname" done +enable_initscripts + +rm -r "${LXC_PATH}/bin" + +cat <