Duplicate lxc-debian to lxc-lenny

templates/lxc-lenny.in

+#!/bin/bash
+
+#
+# lxc: linux Container library
+
+# Authors:
+# Daniel Lezcano <daniel.lezcano@free.fr>
+
+# This library is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Lesser General Public
+# License as published by the Free Software Foundation; either
+# version 2.1 of the License, or (at your option) any later version.
+
+# This library is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+ # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# Lesser General Public License for more details.
+
+# You should have received a copy of the GNU Lesser General Public
+# License along with this library; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+
+SUITE=${SUITE:-lenny}
+
+configure_debian()
+{
+    rootfs=$1
+    hostname=$2
+
+    # configure the inittab
+    cat <<EOF > $rootfs/etc/inittab
+id:3:initdefault:
+si::sysinit:/etc/init.d/rcS
+l0:0:wait:/etc/init.d/rc 0
+l1:1:wait:/etc/init.d/rc 1
+l2:2:wait:/etc/init.d/rc 2
+l3:3:wait:/etc/init.d/rc 3
+l4:4:wait:/etc/init.d/rc 4
+l5:5:wait:/etc/init.d/rc 5
+l6:6:wait:/etc/init.d/rc 6
+# Normally not reached, but fallthrough in case of emergency.
+z6:6:respawn:/sbin/sulogin
+1:2345:respawn:/sbin/getty 38400 console
+c1:12345:respawn:/sbin/getty 38400 tty1 linux
+c2:12345:respawn:/sbin/getty 38400 tty2 linux
+c3:12345:respawn:/sbin/getty 38400 tty3 linux
+c4:12345:respawn:/sbin/getty 38400 tty4 linux
+EOF
+
+    # disable selinux in debian
+    mkdir -p $rootfs/selinux
+    echo 0 > $rootfs/selinux/enforce
+
+    # configure the network using the dhcp
+    cat <<EOF > $rootfs/etc/network/interfaces
+auto lo
+iface lo inet loopback
+
+auto eth0
+iface eth0 inet dhcp
+EOF
+
+    # set the hostname
+    cat <<EOF > $rootfs/etc/hostname
+$hostname
+EOF
+
+    # reconfigure some services
+    if [ -z "$LANG" ]; then
+	chroot $rootfs locale-gen en_US.UTF-8
+	chroot $rootfs update-locale LANG=en_US.UTF-8
+    else
+	chroot $rootfs locale-gen $LANG
+	chroot $rootfs update-locale LANG=$LANG
+    fi
+
+    # remove pointless services in a container
+    chroot $rootfs /usr/sbin/update-rc.d -f umountfs remove
+    chroot $rootfs /usr/sbin/update-rc.d -f hwclock.sh remove
+    chroot $rootfs /usr/sbin/update-rc.d -f hwclockfirst.sh remove
+
+    echo "root:root" | chroot $rootfs chpasswd
+    echo "Root password is 'root', please change !"
+
+    return 0
+}
+
+download_debian()
+{
+    packages=\
+ifupdown,\
+locales,\
+libui-dialog-perl,\
+dialog,\
+dhcp3-client,\
+netbase,\
+net-tools,\
+iproute,\
+openssh-server
+
+    cache=$1
+    arch=$2
+
+    # check the mini debian was not already downloaded
+    mkdir -p "$cache/partial-$SUITE-$arch"
+    if [ $? -ne 0 ]; then
+	echo "Failed to create '$cache/partial-$SUITE-$arch' directory"
+	return 1
+    fi
+
+    # download a mini debian into a cache
+    echo "Downloading debian minimal ..."
+    debootstrap --verbose --variant=minbase --arch=$arch \
+	--include $packages \
+	"$SUITE" "$cache/partial-$SUITE-$arch" http://ftp.debian.org/debian
+    if [ $? -ne 0 ]; then
+	echo "Failed to download the rootfs, aborting."
+	return 1
+    fi
+
+    mv "$1/partial-$SUITE-$arch" "$1/rootfs-$SUITE-$arch"
+    echo "Download complete."
+
+    return 0
+}
+
+copy_debian()
+{
+    cache=$1
+    arch=$2
+    rootfs=$3
+
+    # make a local copy of the minidebian
+    echo -n "Copying rootfs to $rootfs..."
+    cp -a "$cache/rootfs-$SUITE-$arch" $rootfs || return 1
+    return 0
+}
+
+install_debian()
+{
+    cache="@LOCALSTATEDIR@/cache/lxc/debian"
+    rootfs=$1
+    mkdir -p @LOCALSTATEDIR@/lock/subsys/
+    (
+	flock -n -x 200
+	if [ $? -ne 0 ]; then
+	    echo "Cache repository is busy."
+	    return 1
+	fi
+
+	arch=$(arch)
+	if [ "$arch" == "x86_64" ]; then
+	    arch=amd64
+	fi
+
+	if [ "$arch" == "i686" ]; then
+	    arch=i386
+	fi
+
+	echo "Checking cache download in $cache/rootfs-$SUITE-$arch ... "
+	if [ ! -e "$cache/rootfs-$SUITE-$arch" ]; then
+	    download_debian $cache $arch
+	    if [ $? -ne 0 ]; then
+		echo "Failed to download 'debian base'"
+		return 1
+	    fi
+	fi
+
+	copy_debian $cache $arch $rootfs
+	if [ $? -ne 0 ]; then
+	    echo "Failed to copy rootfs"
+	    return 1
+	fi
+
+	return 0
+
+	) 200>@LOCALSTATEDIR@/lock/subsys/lxc
+
+    return $?
+}
+
+copy_configuration()
+{
+    path=$1
+    rootfs=$2
+    name=$3
+
+    cat <<EOF >> $path/config
+lxc.tty = 4
+lxc.pts = 1024
+lxc.rootfs = $rootfs
+lxc.cgroup.devices.deny = a
+# /dev/null and zero
+lxc.cgroup.devices.allow = c 1:3 rwm
+lxc.cgroup.devices.allow = c 1:5 rwm
+# consoles
+lxc.cgroup.devices.allow = c 5:1 rwm
+lxc.cgroup.devices.allow = c 5:0 rwm
+lxc.cgroup.devices.allow = c 4:0 rwm
+lxc.cgroup.devices.allow = c 4:1 rwm
+# /dev/{,u}random
+lxc.cgroup.devices.allow = c 1:9 rwm
+lxc.cgroup.devices.allow = c 1:8 rwm
+lxc.cgroup.devices.allow = c 136:* rwm
+lxc.cgroup.devices.allow = c 5:2 rwm
+# rtc
+lxc.cgroup.devices.allow = c 254:0 rwm
+
+# mounts point
+lxc.mount.entry=proc $rootfs/proc proc nodev,noexec,nosuid 0 0
+lxc.mount.entry=devpts $rootfs/dev/pts devpts defaults 0 0
+lxc.mount.entry=sysfs $rootfs/sys sysfs defaults  0 0
+EOF
+
+    if [ $? -ne 0 ]; then
+	echo "Failed to add configuration"
+	return 1
+    fi
+
+    return 0
+}
+
+clean()
+{
+    cache="@LOCALSTATEDIR@/cache/lxc/debian"
+
+    if [ ! -e $cache ]; then
+	exit 0
+    fi
+
+    # lock, so we won't purge while someone is creating a repository
+    (
+	flock -n -x 200
+	if [ $? != 0 ]; then
+	    echo "Cache repository is busy."
+	    exit 1
+	fi
+
+	echo -n "Purging the download cache..."
+	rm --preserve-root --one-file-system -rf $cache && echo "Done." || exit 1
+	exit 0
+
+    ) 200>@LOCALSTATEDIR@/lock/subsys/lxc
+}
+
+usage()
+{
+    cat <<EOF
+$1 -h|--help -p|--path=<path> --clean
+EOF
+    return 0
+}
+
+options=$(getopt -o hp:n:c -l help,path:,name:,clean -- "$@")
+if [ $? -ne 0 ]; then
+        usage $(basename $0)
+	exit 1
+fi
+eval set -- "$options"
+
+while true
+do
+    case "$1" in
+        -h|--help)      usage $0 && exit 0;;
+        -p|--path)      path=$2; shift 2;;
+	-n|--name)      name=$2; shift 2;;
+	-c|--clean)     clean=$2; shift 2;;
+        --)             shift 1; break ;;
+        *)              break ;;
+    esac
+done
+
+if [ ! -z "$clean" -a -z "$path" ]; then
+    clean || exit 1
+    exit 0
+fi
+
+type debootstrap
+if [ $? -ne 0 ]; then
+    echo "'debootstrap' command is missing"
+    exit 1
+fi
+
+if [ -z "$path" ]; then
+    echo "'path' parameter is required"
+    exit 1
+fi
+
+if [ "$(id -u)" != "0" ]; then
+    echo "This script should be run as 'root'"
+    exit 1
+fi
+
+rootfs=$path/rootfs
+
+install_debian $rootfs
+if [ $? -ne 0 ]; then
+    echo "failed to install debian"
+    exit 1
+fi
+
+configure_debian $rootfs $name
+if [ $? -ne 0 ]; then
+    echo "failed to configure debian for a container"
+    exit 1
+fi
+
+copy_configuration $path $rootfs
+if [ $? -ne 0 ]; then
+    echo "failed write configuration file"
+    exit 1
+fi
+
+if [ ! -z $clean ]; then
+    clean || exit 1
+    exit 0
+fi