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authorLeonardo Arena <rnalrd@alpinelinux.org>2011-08-16 11:26:52 +0000
committerLeonardo Arena <rnalrd@alpinelinux.org>2011-08-16 11:26:52 +0000
commit1fb30d930d4f7069c0b7b73dd9895c036e8d0f56 (patch)
tree51ddcc9e8edbc824ac3b40c0c866a6af878e655b /main/lxc
parent6f18af728d40558a2744a05ad438686b921ea7a6 (diff)
downloadaports-1fb30d930d4f7069c0b7b73dd9895c036e8d0f56.tar.bz2
aports-1fb30d930d4f7069c0b7b73dd9895c036e8d0f56.tar.xz
testing/lxc: move to main
Diffstat (limited to 'main/lxc')
-rw-r--r--main/lxc/APKBUILD52
-rw-r--r--main/lxc/lxc.initd114
-rwxr-xr-xmain/lxc/setup-lxc-guest282
-rwxr-xr-xmain/lxc/setup-lxc-template44
4 files changed, 492 insertions, 0 deletions
diff --git a/main/lxc/APKBUILD b/main/lxc/APKBUILD
new file mode 100644
index 0000000000..10f55deebc
--- /dev/null
+++ b/main/lxc/APKBUILD
@@ -0,0 +1,52 @@
+# Contributor: William Pitcock <nenolod@dereferenced.org>
+# Maintainer: William Pitcock <nenolod@dereferenced.org>
+pkgname=lxc
+pkgver=0.7.4
+_mypkgver=${pkgver/_rc/-rc}
+pkgrel=3
+pkgdesc="linux containers - tools"
+url="http://lxc.sourceforge.net/"
+arch="all"
+license="GPL"
+depends=
+depends_dev="libcap-dev"
+makedepends="$depends_dev"
+install=""
+subpackages="$pkgname-dev $pkgname-doc"
+source="http://lxc.sourceforge.net/download/lxc/$pkgname-$_mypkgver.tar.gz
+ lxc.initd
+ setup-lxc-template
+ setup-lxc-guest
+ "
+
+_builddir="${srcdir}/${pkgname}-${_mypkgver}"
+prepare() {
+ local i
+ cd "$_builddir"
+ for i in $source; do
+ case $i in
+ *.patch) msg $i; patch -p1 -i "$srcdir"/$i || return 1;;
+ esac
+ done
+}
+
+build() {
+ cd "$_builddir"
+ ./configure --prefix=/usr \
+ --sysconfdir=/etc \
+ --localstatedir=/var
+ make || return 1
+}
+
+package() {
+ cd "$_builddir"
+ make DESTDIR="$pkgdir" install || return 1
+ install -Dm755 "$srcdir"/lxc.initd "$pkgdir"/etc/init.d/lxc
+ install -Dm755 "$srcdir"/setup-lxc-template "$pkgdir"/usr/bin/setup-lxc-template
+ install -Dm755 "$srcdir"/setup-lxc-guest "$pkgdir"/usr/bin/setup-lxc-guest
+}
+
+md5sums="51bb5d7d9d22e2c98490aed47fc02ad9 lxc-0.7.4.tar.gz
+e66c3cf8e70168b07060746a4e65b671 lxc.initd
+45d0f604310e58a1359f1745a4739843 setup-lxc-template
+c3f7fd7e85d40c4a4b1b427048ff9652 setup-lxc-guest"
diff --git a/main/lxc/lxc.initd b/main/lxc/lxc.initd
new file mode 100644
index 0000000000..86bae5f757
--- /dev/null
+++ b/main/lxc/lxc.initd
@@ -0,0 +1,114 @@
+#!/sbin/runscript
+# Copyright 1999-2011 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+# $Header: /var/cvsroot/gentoo-x86/app-emulation/lxc/files/lxc.initd,v 1.3 2011/02/26 18:02:51 flameeyes Exp $
+
+CONTAINER=${SVCNAME#*.}
+CONFIGFILE=${CONFIGFILE:-/etc/lxc/${CONTAINER}.conf}
+
+lxc_get_var() {
+ awk 'BEGIN { FS="[ \t]*=[ \t]*" } $1 == "'$1'" { print $2; exit }' ${CONFIGFILE}
+}
+
+cgroup_get_mount() {
+ mount | awk '$5 == "cgroup" { print $3; exit }'
+}
+
+checkconfig() {
+ if [ ${CONTAINER} = ${SVCNAME} ]; then
+ eerror "You have to create an init script for each container:"
+ eerror " ln -s lxc /etc/init.d/lxc.container"
+ return 1
+ fi
+
+ utsname=$(lxc_get_var lxc.utsname)
+ if [ ${CONTAINER} != ${utsname} ]; then
+ eerror "You should use the same name for the service and the"
+ eerror "container. Right now the container is called ${utsname}"
+ return 1
+ fi
+}
+
+depend() {
+ # be quiet, since we have to run depend() also for the
+ # non-muxed init script, unfortunately.
+ checkconfig 2>/dev/null || return 0
+
+ config ${CONFIGFILE}
+ need localmount
+
+ # find out which network interface the container is linked to,
+ # and then require that to be enabled, so that the
+ # dependencies are correct.
+ netif=$(lxc_get_var lxc.network.link)
+ [ -n "${netif}" ] && need net.${netif}
+}
+
+start() {
+ checkconfig || return 1
+
+ # make sure that cgroup is mounted if it isn't already, this
+ # ensures that we can actually proceed!
+ cgroupmount=$(cgroup_get_mount)
+ if [ -z ${cgroupmount} ]; then
+ mkdir -p /cgroup
+
+ if ! mount -t cgroup cgroup /cgroup; then
+ eerror "Unable to mount cgroup pseudo-filesystem on /cgroup"
+ return 1
+ fi
+
+ cgroupmount=/cgroup
+ fi
+
+ rm /var/log/lxc/${CONTAINER}.log
+
+ rootpath=$(lxc_get_var lxc.rootfs)
+
+ # Check the format of our init and the chroot's init, to see if we
+ # have to use linux32 or linux64…
+ case $(scanelf -BF '%M#f' /sbin/init ${rootpath}/sbin/init | tr '\n' ':') in
+ ELFCLASS64:ELFCLASS64:) setarch=;;
+ ELFCLASS32:ELFCLASS32:) setarch=;;
+ ELFCLASS32:ELFCLASS64:) setarch=linux64;;
+ ELFCLASS64:ELFCLASS32:) setarch=linux32;;
+ esac
+
+ ebegin "Starting ${CONTAINER}"
+ ${setarch} lxc-start -l WARN -n ${CONTAINER} -f ${CONFIGFILE} -d -o /var/log/lxc/${CONTAINER}.log
+ sleep 0.5
+
+ # lxc-start -d will _always_ report a correct startup, even if it
+ # failed, so rather than trust that, check that the cgroup exists.
+ [ -d ${cgroupmount}/${CONTAINER} ]
+ eend $?
+}
+
+stop() {
+ checkconfig || return 1
+
+ cgroupmount=$(cgroup_get_mount)
+
+ if ! [ -d ${cgroupmount}/${CONTAINER} ]; then
+ ewarn "${CONTAINER} doesn't seem to be started."
+ return 0
+ fi
+
+ init_pid=$(head -n1 ${cgroupmount}/${CONTAINER}/tasks)
+
+ ebegin "Shutting down system in ${CONTAINER}"
+ kill -INT ${init_pid}
+ eend $?
+
+ sleep 15
+
+ missingprocs=$(pgrep -P ${init_pid})
+
+ if [ -n "${missingprocs}" ]; then
+ ewarn "Something failed to properly shut down in ${CONTAINER}"
+ fi
+
+ ebegin "Stopping ${CONTAINER}"
+ lxc-stop -n ${CONTAINER}
+ eend $?
+}
diff --git a/main/lxc/setup-lxc-guest b/main/lxc/setup-lxc-guest
new file mode 100755
index 0000000000..0519ae0299
--- /dev/null
+++ b/main/lxc/setup-lxc-guest
@@ -0,0 +1,282 @@
+#!/bin/sh
+
+# simple script to set up a new lxc guest
+# test the first argument against the remaining ones, return success on a match
+isin() {
+ local _a=$1 _b
+
+ shift
+ for _b; do
+ [ "$_a" = "$_b" ] && return 0
+ done
+ return 1
+}
+
+# remove all occurrences of first argument from list formed by
+# the remaining arguments
+rmel() {
+ local _a=$1 _b
+
+ shift
+ for _b; do
+ [ "$_a" != "$_b" ] && echo -n "$_b "
+ done
+}
+
+# Issue a read into the global variable $resp.
+_ask() {
+ local _redo=0
+
+ read resp
+ case "$resp" in
+ !) echo "Type 'exit' to return to setup."
+ sh
+ _redo=1
+ ;;
+ !*) eval "${resp#?}"
+ _redo=1
+ ;;
+ esac
+ return $_redo
+}
+
+# Ask for user input.
+#
+# $1 = the question to ask the user
+# $2 = the default answer
+#
+# Save the user input (or the default) in $resp.
+#
+# Allow the user to escape to shells ('!') or execute commands
+# ('!foo') before entering the input.
+ask() {
+ local _question=$1 _default=$2
+
+ while :; do
+ echo -n "$_question "
+ [ -z "$_default" ] || echo -n "[$_default] "
+ _ask && : ${resp:=$_default} && break
+ done
+}
+
+# Ask for user input until a non-empty reply is entered.
+#
+# $1 = the question to ask the user
+# $2 = the default answer
+#
+# Save the user input (or the default) in $resp.
+ask_until() {
+ resp=
+ while [ -z "$resp" ] ; do
+ ask "$1" "$2"
+ done
+}
+
+# Ask for the user to select one value from a list, or 'done'.
+#
+# $1 = name of the list items (disk, cd, etc.)
+# $2 = question to ask
+# $3 = list of valid choices
+# $4 = default choice, if it is not specified use the first item in $3
+#
+# N.B.! $3 and $4 will be "expanded" using eval, so be sure to escape them
+# if they contain spooky stuff
+#
+# At exit $resp holds selected item, or 'done'
+ask_which() {
+ local _name=$1 _query=$2 _list=$3 _def=$4 _dynlist _dyndef
+
+ while :; do
+ # Put both lines in ask prompt, rather than use a
+ # separate 'echo' to ensure the entire question is
+ # re-ask'ed after a '!' or '!foo' shell escape.
+ eval "_dynlist=\"$_list\""
+ eval "_dyndef=\"$_def\""
+
+ # Clean away whitespace and determine the default
+ set -o noglob
+ set -- $_dyndef; _dyndef="$1"
+ set -- $_dynlist; _dynlist="$*"
+ set +o noglob
+ [ $# -lt 1 ] && resp=done && return
+
+ : ${_dyndef:=$1}
+ echo "Available ${_name}s are: $_dynlist."
+ echo -n "Which one $_query? (or 'done') "
+ [ -n "$_dyndef" ] && echo -n "[$_dyndef] "
+ _ask || continue
+ [ -z "$resp" ] && resp="$_dyndef"
+
+ # Quote $resp to prevent user from confusing isin() by
+ # entering something like 'a a'.
+ isin "$resp" $_dynlist done && break
+ echo "'$resp' is not a valid choice."
+ done
+}
+
+# Ask for user input until a non-empty reply is entered.
+#
+# $1 = the question to ask the user
+# $2 = the default answer
+#
+# Save the user input (or the default) in $resp.
+ask_until() {
+ resp=
+ while [ -z "$resp" ] ; do
+ ask "$1" "$2"
+ done
+}
+
+# http://en.wikipedia.org/wiki/Hostname#Restrictions_on_valid_host_names
+valid_hostname() {
+ # check length
+ if [ $(echo "$1" | wc -c) -gt 63 ]; then
+ echo "Hostname '$1' is too long."
+ return 1
+ fi
+ # check that it only contains valid chars
+ if ! [ -z "$(echo $1 | sed 's/[0-9a-z-]//g')" ]; then
+ echo "Hostname must only contain letters (a-z), digits (0-9) or -"
+ return 1
+ fi
+ # must not start with -
+ case "$1" in
+ -*) echo "Hostname must not start with a '-'"; return 1;;
+ esac
+ return 0
+}
+
+# return last ipv4 address and mask
+#
+# $1 = interface
+#
+last_ipv4_addr_mask() {
+ local _iface=$1
+ ip addr show dev $_iface | awk '$1 == "inet" {print $2}' | tail -n1
+}
+
+valid_ip_and_prefix() {
+ [ "$1" ] || return 0
+ ipcalc -s -m $1 >/dev/null 2>&1 && ! ipcalc -s -m $1/0 >/dev/null 2>&1
+}
+
+# ask for hostname
+#
+# $1 = default
+#
+# retrusn hostname in global var $resp
+#
+ask_hostname() {
+ while true; do
+ ask "Hostname for new lxc container:" $1
+ if [ -d /var/lib/lxc/$resp ]; then
+ echo "/var/lib/lxc/$resp already exist"
+ continue
+ fi
+ if [ -d /lxc/$resp ]; then
+ echo "/lxc/$resp already exist"
+ continue
+ fi
+ valid_hostname $resp && break
+ done
+}
+
+ask_ifaceopts() {
+ # get ip address(es)
+ resp=
+ local ifaceopts= _def= _iface=
+ local ifaces=$(ip addr | awk -F: '$1 ~ /^[0-9]/ {printf "%s" $2} END {printf "\n"}')
+ local last_iface=$(echo $ifaces | sed 's/.* //')
+ while [ "$resp" != "done" ]; do
+ if [ -z "$ifaces" ] || [ "$ifaces" = "lo " ] || [ -n "$ifaceopts" ]; then
+ _def="done"
+ else
+ _def=$(echo $ifaces | sed 's/.* //')
+ fi
+ ask_which "network interface" "to use for $_hostname" \
+ "$ifaces" $_def
+ [ "$resp" = "done" ] && break
+
+ _iface=$resp
+ ifaces=$(rmel $_iface $ifaces)
+ # suggested ip by last digit + 1
+ _last_ip_mask=$(last_ipv4_addr_mask $_iface)
+ _last_ip=${_last_ip_mask%/*}
+ _last_ip_digit=${_last_ip##*.}
+ _ip=${_last_ip%.*}.$((($_last_ip_digit + 1) % 256))
+ _mask=${_last_ip_mask#*/}
+ while true; do
+ ask "Enter IP address/mask for $_iface:" $_ip/$_mask
+ valid_ip_and_prefix "$resp" 2>&1 && break
+ echo "$resp is not a valid IPv4 address/mask"
+ done
+ _ip_mask=$resp
+ ifaceopts="$ifaceopts --interface $_iface:$_ip_mask"
+ echo "lxc.network.ipv4 = $_iface/$_ip_mask" >> /tmp/lxc-$hostname.conf
+ conffile=/tmp/lxc-$hostname.conf
+ done
+ resp="$conffile"
+}
+
+ask_template() {
+ local temp
+ # get template
+ while true; do
+ ask "Enter template file (or empty for generate a new):" \
+ $_template
+ if [ -z "$resp" ] || [ -r "$resp" ]; then
+ break
+ fi
+ echo "Can not read $resp"
+ done
+ temp=$resp
+ if [ -z "$temp" ]; then
+ temp=/tmp/template.tar.gz
+ echo "Generating template..."
+ if setup-lxc-template -q -o $temp; then
+ echo "ok"
+ else
+ echo "Failed to create template"
+ exit 1
+ fi
+ fi
+ resp=$temp
+}
+
+usage() {
+ echo "Usage: ${0##*/} [-h] [HOSTNAME...]"
+ exit 1
+}
+
+while getopts "h" opt; do
+ case "$opt" in
+ h) usage;;
+ ?) usage;;
+ esac
+done
+
+shift $(($OPTIND - 1))
+
+if [ "$(whoami)" != "root" ]; then
+ echo "Need to be root. Sorry."
+ exit 1
+fi
+
+while true; do
+ ask_hostname $1
+ _hostname=$resp
+
+ ask_ifaceopts
+ _conffile=$resp
+
+ ask_template
+ _template=$resp
+
+ lxc-create -n $_hostname \
+ -f $_conffile \
+ -t "$_template" \
+ || exit 1
+
+ shift
+ [ $# -le 0 ] && exit 0
+done
diff --git a/main/lxc/setup-lxc-template b/main/lxc/setup-lxc-template
new file mode 100755
index 0000000000..f8e9fe4a39
--- /dev/null
+++ b/main/lxc/setup-lxc-template
@@ -0,0 +1,44 @@
+#!/bin/sh
+
+# create a lxc template
+PROG=$0
+
+usage() {
+ echo "usage: $PROG [-fhq] [-o OUTFILE] [-X repository] [packages...]"
+ exit $1
+}
+
+clean_exit() {
+ rm -rf "$tmpdir"
+ exit $1
+}
+
+outfile=template.tar.gz
+fakeroot=
+repos=
+while getopts "ho:qX:" opt; do
+ case "$opt" in
+ h) usage 0;;
+ o) outfile="$OPTARG";;
+ q) quiet=-q;;
+ X) repos="$repos --repository $OPTARG";;
+ esac
+done
+shift $(( $OPTIND - 1 ))
+
+if [ "$(whoami)" != "root" ]; then
+ echo "Warning: you need root permissions" >&2
+fi
+
+tmpdir=$(mktemp -d ${TMPDIR:-/tmp}/setup-lxc-template-XXXXXX)
+
+apk add --root "$tmpdir" --initdb --keys-dir /etc/apk/keys -U \
+ $quiet ${repos:---repositories-file /etc/apk/repositories} \
+ alpine-base $@ \
+ || clean_exit 1
+
+tar -czf "$outfile" -C "$tmpdir" $(ls "$tmpdir") || clean_exit 1
+
+[ -z "$quiet" ] && echo "Created $outfile"
+clean_exit 0
+