templates/lxc-plamo.in

   1 #!/bin/bash -eu
   2
   3 #
   4 # template script for generating Plamo Linux container for LXC
   5 #
   6
   7 #
   8 # lxc: linux Container library
   9
  10 # Authors:
  11 # KATOH Yasufumi <karma@jazz.email.ne.jp>
  12 # TAMUKI Shoichi <tamuki@linet.gr.jp>
  13
  14 # This library is free software; you can redistribute it and/or
  15 # modify it under the terms of the GNU Lesser General Public
  16 # License as published by the Free Software Foundation; either
  17 # version 2.1 of the License, or (at your option) any later version.
  18
  19 # This library is distributed in the hope that it will be useful,
  20 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  21 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  22 # Lesser General Public License for more details.
  23
  24 # You should have received a copy of the GNU Lesser General Public
  25 # License along with this library; if not, write to the Free Software
  26 # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  27
  28 # ref. https://github.com/Ponce/lxc-slackware/blob/master/lxc-slackware
  29 #      lxc-ubuntu script
  30
  31 # Detect use under userns (unsupported)
  32 for arg in "$@"; do
  33     [ "$arg" = "--" ] && break
  34     if [ "$arg" = "--mapped-uid" -o "$arg" = "--mapped-gid" ]; then
  35         echo "This template can't be used for unprivileged containers." 1>&2
  36         echo "You may want to try the \"download\" template instead." 1>&2
  37         exit 1
  38     fi
  39 done
  40
  41 # Make sure the usual locations are in PATH
  42 export PATH=$PATH:/usr/sbin:/usr/bin:/sbin:/bin
  43
  44 [ -r /etc/default/lxc ] && . /etc/default/lxc
  45
  46 DLSCHEME=${DLSCHEME:-"http"}
  47 MIRRORSRV=${MIRRORSRV:-"repository.plamolinux.org"}
  48 MIRRORPATH=${MIRRORPATH:-"/pub/linux/Plamo"}
  49 CATEGORIES=${CATEGORIES-"00_base 01_minimum"}
  50 EXTRACTGRS=${EXTRACTGRS-""}
  51 IGNOREPKGS=${IGNOREPKGS-"grub kernel lilo linux_firmware microcode_ctl
  52     cpufreqd cpufrequtils gpm ntp kmod"}
  53 ADDONPKGS=${ADDONPKGS-"`echo contrib/Hamradio/{morse,qrq}`"}
  54
  55 download_plamo() {
  56   # check the mini plamo was not already downloaded
  57   if ! mkdir -p $ptcache ; then
  58     echo "Failed to create '$ptcache' directory."
  59     return 1
  60   fi
  61   # download a mini plamo into a cache
  62   echo "Downloading Plamo-$release minimal..."
  63   cd $ptcache
  64   case $DLSCHEME in http) depth=2 ;; ftp) depth=3 ;; esac
  65   rej=${IGNOREPKGS%% *} ; [ -n "$rej" ] && rej="$rej-*"
  66   if [ `echo $IGNOREPKGS | wc -w` -gt 1 ] ; then
  67     for p in ${IGNOREPKGS#* } ; do rej="$rej,$p-*" ; done
  68   fi
  69   for i in $CATEGORIES ; do
  70     wget -nv -e robots=off -r -l $depth -nd -A .tgz,.txz -R "$rej" \
  71         -I $MIRRORPATH/Plamo-$release/$arch/plamo/$i \
  72         -X $MIRRORPATH/Plamo-$release/$arch/plamo/$i/old \
  73         $DLSCHEME://$MIRRORSRV$MIRRORPATH/Plamo-$release/$arch/plamo/$i
  74     if [ $? -ne 0 ] ; then
  75       echo "Failed to download the rootfs, aborting."
  76       return 1
  77     fi
  78   done
  79   for i in $EXTRACTGRS ; do
  80     wget -nv -e robots=off -r -l $depth -nd -A .tgz,.txz -R "$rej" \
  81         -I $MIRRORPATH/Plamo-$release/$arch/contrib/$i \
  82         -X $MIRRORPATH/Plamo-$release/$arch/contrib/$i/old \
  83         $DLSCHEME://$MIRRORSRV$MIRRORPATH/Plamo-$release/$arch/contrib/$i
  84     if [ $? -ne 0 ] ; then
  85       echo "Failed to download the rootfs, aborting."
  86       return 1
  87     fi
  88   done
  89   for p in $ADDONPKGS ; do
  90     wget -nv -e robots=off -r -l $depth -nd -A "`basename $p`-*" \
  91         -I $MIRRORPATH/Plamo-$release/$arch/`dirname $p` \
  92         -X $MIRRORPATH/Plamo-$release/$arch/`dirname $p`/old \
  93         $DLSCHEME://$MIRRORSRV$MIRRORPATH/Plamo-$release/$arch/`dirname $p`
  94     if [ $? -ne 0 ] ; then
  95       echo "Failed to download the rootfs, aborting."
  96       return 1
  97     fi
  98   done
  99   mv $ptcache $dlcache
 100   echo "Download complete."
 101   return 0
 102 }
 103
 104 copy_plamo() {
 105   # make a local copy of the mini plamo
 106   echo "Copying $rtcache to $rootfs..."
 107   mkdir -p $rootfs
 108   find $rtcache -mindepth 1 -maxdepth 1 -exec cp -a {} $rootfs \; || return 1
 109   return 0
 110 }
 111
 112 install_plamo() {
 113   mkdir -p @LOCALSTATEDIR@/lock/subsys
 114   (
 115     if ! flock -n 9 ; then
 116       echo "Cache repository is busy."
 117       return 1
 118     fi
 119     echo "Checking cache download in $dlcache..."
 120     if [ ! -d $dlcache ] ; then
 121       if ! download_plamo ; then
 122         echo "Failed to download plamo $release base packages."
 123         return 1
 124       fi
 125     fi
 126     # install "installpkg" command temporarily with static linked tar
 127     # command into the lxc cache directory to keep the original uid/
 128     # gid of files/directories.
 129     echo "Installing 'installpkg' command into $dlcache/sbin..."
 130     ( cd $dlcache ; tar xpJf hdsetup-*.txz ; rm -rf tmp usr var )
 131     sed -i "/ldconfig/!s@/sbin@$dlcache&@g" $dlcache/sbin/installpkg*
 132     PATH=$dlcache/sbin:$PATH
 133     echo "Installing packages to $rtcache..."
 134     if [ ! -d $rtcache ] ; then
 135       mkdir -p $rtcache
 136       for p in `ls -cr $dlcache/*.t?z` ; do
 137         installpkg -root $rtcache -priority ADD $p
 138       done
 139     fi
 140     echo "Copy $rtcache to $rootfs..."
 141     if ! copy_plamo ; then
 142       echo "Failed to copy rootfs."
 143       return 1
 144     fi
 145     return 0
 146   ) 9> @LOCALSTATEDIR@/lock/subsys/lxc-plamo
 147 }
 148
 149 configure_plamo() {
 150   # suppress log level output for udev
 151   sed -i 's/="err"/=0/' $rootfs/etc/udev/udev.conf
 152   # /etc/fstab
 153   cat <<- "EOF" > $rootfs/etc/fstab
 154         none             /proc    proc        defaults   0   0
 155         none             /sys     sysfs       defaults   0   0
 156         none             /dev     tmpfs       defaults   0   0
 157         none                /tmp     tmpfs       defaults   0   0
 158         none            /dev/pts        devpts  gid=5,mode=620    0 0
 159         none            /proc/bus/usb             usbfs        noauto   0   0
 160         none             /var/lib/nfs/rpc_pipefs rpc_pipefs  defaults   0   0
 161         EOF
 162   # /etc/inittab
 163   cat <<- "EOF" | patch $rootfs/etc/inittab
 164         32,33c32,33
 165         < # What to do when power fails (shutdown to single user).
 166         < pf::powerfail:/sbin/shutdown -f +5 "THE POWER IS FAILING"
 167         ---
 168         > # What to do when power fails (shutdown).
 169         > pf::powerfail:/sbin/shutdown -h +0 "THE POWER IS FAILING"
 170         47a48
 171         > 1:1235:respawn:/sbin/agetty 38400 console
 172         52,53d52
 173         < c5:1235:respawn:/sbin/agetty 38400 tty5 linux
 174         < c6:12345:respawn:/sbin/agetty 38400 tty6 linux
 175         EOF
 176   # set the hostname
 177   echo "$name" > $rootfs/etc/HOSTNAME
 178   # set minimal hosts
 179   echo "127.0.0.1 localhost $name" > $rootfs/etc/hosts
 180   # configure the network using the dhcp
 181   echo "DHCP" > $rootfs/var/run/inet1-scheme
 182   # localtime (JST)
 183   ln -s ../usr/share/zoneinfo/Asia/Tokyo $rootfs/etc/localtime
 184   # disable pam_loginuid.so in /etc/pam.d/login (for libvirt's lxc driver)
 185   sed -i '/pam_loginuid/s/^/#/' $rootfs/etc/pam.d/login
 186   # glibc configure
 187   mv $rootfs/etc/ld.so.conf{.new,}
 188   chroot $rootfs ldconfig
 189   echo "Please change root password!"
 190   ed - $rootfs/etc/rc.d/rc.S <<- "EOF"
 191         /^mount -w -n -t proc/;/^mkdir \/dev\/shm/-1d
 192         /^mknod \/dev\/null/;/^# Clean \/etc\/mtab/-2d
 193         /^# copy the rules/;/^# Set the hostname/-1d
 194         /^# Check the integrity/;/^# Clean up temporary/-1d
 195         w
 196         EOF
 197   # /etc/rc.d/rc.M
 198   ed - $rootfs/etc/rc.d/rc.M <<- "EOF"
 199         /^# Screen blanks/;/^# Initialize ip6tables/-1d
 200         /^# Initialize sysctl/;/^echo "Starting services/-1d
 201         /^sync/;/^# All done/-1d
 202         w
 203         EOF
 204   # /etc/rc.d/rc.inet1.tradnet
 205   head -n-93 $rootfs/sbin/netconfig.tradnet > /tmp/netconfig.rconly
 206   cat <<- EOF >> /tmp/netconfig.rconly
 207         PCMCIA=n
 208         RC=$rootfs/etc/rc.d/rc.inet1.tradnet
 209         IFCONFIG=sbin/ifconfig
 210         ROUTE=sbin/route
 211         INET1SCHEME=var/run/inet1-scheme
 212         IPADDR=127.0.0.1
 213         NETWORK=127.0.0.0
 214         DHCPCD=usr/sbin/dhclient
 215         LOOPBACK=y
 216         make_config_file
 217         EOF
 218   rm -f $rootfs/etc/rc.d/rc.inet1.tradnet
 219   sh /tmp/netconfig.rconly
 220   rm -f /tmp/netconfig.rconly
 221   sed -i '/cmdline/s/if/& false \&\&/' $rootfs/etc/rc.d/rc.inet1.tradnet
 222   # /etc/rc.d/rc.inet2
 223   sed -i '/rpc.mountd/s/^/#/' $rootfs/etc/rc.d/rc.inet2
 224   sed -i '/modprobe/s/^/#/' $rootfs/etc/rc.d/rc.inet2
 225   # configure to start only the minimum of service
 226   chmod 644 $rootfs/etc/rc.d/init.d/saslauthd
 227   chmod 644 $rootfs/etc/rc.d/init.d/open-iscsi
 228   rm -f $rootfs/etc/rc.d/init.d/postfix
 229   rm -f $rootfs/var/log/initpkg/shadow
 230   return 0
 231 }
 232
 233 copy_configuration() {
 234   ret=0
 235   cat <<- EOF >> $path/config || let ret++
 236         lxc.uts.name = $name
 237         lxc.arch = $arch
 238         EOF
 239   if [ -f "@LXCTEMPLATECONFIG@/plamo.common.conf" ] ; then
 240     cat <<- "EOF" >> $path/config || let ret++
 241
 242         lxc.include = @LXCTEMPLATECONFIG@/plamo.common.conf
 243         EOF
 244   fi
 245   if [ $ret -ne 0 ] ; then
 246     echo "Failed to add configuration."
 247     return 1
 248   fi
 249   return 0
 250 }
 251
 252 post_process() {
 253   # nothing do in Plamo Linux
 254   true
 255 }
 256
 257 do_bindhome() {
 258   # bind-mount the user's path into the container's /home
 259   h=`getent passwd $bindhome | cut -d: -f6`
 260   mkdir -p $rootfs/$h
 261   echo "lxc.mount.entry = $h $rootfs/$h none bind 0 0" >> $path/config
 262   # copy /etc/passwd, /etc/shadow, and /etc/group entries into container
 263   if ! pwd=`getent passwd $bindhome` ; then
 264     echo "Warning: failed to copy password entry for $bindhome."
 265   else
 266     echo $pwd >> $rootfs/etc/passwd
 267   fi
 268   echo `getent shadow $bindhome` >> $rootfs/etc/shadow
 269 }
 270
 271 cleanup() {
 272   [ -d $dlcache -a -d $rtcache ] || return 0
 273   # lock, so we won't purge while someone is creating a repository
 274   (
 275     if ! flock -n 9 ; then
 276       echo "Cache repository is busy."
 277       return 1
 278     fi
 279     echo "Purging the download cache..."
 280     rm -rf --one-file-system $dlcache $rtcache || return 1
 281     echo "Done."
 282     return 0
 283   ) 9> @LOCALSTATEDIR@/lock/subsys/lxc-plamo
 284 }
 285
 286 usage() {
 287   cat <<- EOF
 288         $prog [-h|--help] -p|--path=<path> -n|--name=<name> --rootfs=<rootfs>
 289                   [-c|--clean] [-r|--release=<release>] [-a|--arch=<arch>]
 290                   [-b|--bindhome=<user>]
 291         release: $release
 292         arch: x86 or x86_64: defaults to host arch
 293         bindhome: bind <user>'s home into the container
 294         EOF
 295 }
 296
 297 prog=`basename $0`
 298 path="" ; name="" ; rootfs=""
 299 clean=0
 300 release=${release:-6.x}
 301 arch=`uname -m | sed 's/i.86/x86/'` ; hostarch=$arch
 302 bindhome=""
 303 sopts=hp:n:cr:a:b:
 304 lopts=help,path:,name:,rootfs:,clean,release:,arch:,bindhome:
 305 if ! options=`getopt -o $sopts -l $lopts -- "$@"` ; then
 306   usage
 307   exit 1
 308 fi
 309 eval set -- "$options"
 310 while true ; do
 311   case "$1" in
 312   -h|--help) usage && exit 0 ;;
 313   -p|--path) path=$2 ; shift 2 ;;
 314   -n|--name) name=$2 ; shift 2 ;;
 315   --rootfs) rootfs=$2 ; shift 2 ;;
 316   -c|--clean) clean=1 ; shift 1 ;;
 317   -r|--release) release=$2 ; shift 2 ;;
 318   -a|--arch) arch=$2 ; shift 2 ;;
 319   -b|--bindhome) bindhome=$2 ; shift 2 ;;
 320   --) shift 1 ; break ;;
 321   *) break ;;
 322   esac
 323 done
 324 if [ $clean -eq 1 -a -z "$path" ] ; then
 325   cleanup || exit 1
 326   exit 0
 327 fi
 328 if [ $hostarch == "x86" -a $arch == "x86_64" ] ; then
 329   echo "Can't create x86_64 container on x86."
 330   exit 1
 331 fi
 332 if [ -z "$path" ] ; then
 333   echo "'path' parameter is required."
 334   exit 1
 335 fi
 336 if [ -z "$name" ] ; then
 337   echo "'name' parameter is required."
 338   exit 1
 339 fi
 340 if [ `id -u` -ne 0 ] ; then
 341   echo "This script should be run as 'root'."
 342   exit 1
 343 fi
 344 cache="${LXC_CACHE_PATH:-@LOCALSTATEDIR@/cache/lxc}"
 345 ptcache=$cache/partial-${prog##*-}-$release-$arch
 346 dlcache=$cache/cache-${prog##*-}-$release-$arch
 347 rtcache=$cache/rootfs-${prog##*-}-$release-$arch
 348 if [ -z "$rootfs" ] ; then
 349   if grep -q "^lxc.rootfs.path" $path/config ; then
 350     rootfs=`awk -F= '/^lxc.rootfs.path =/{ print $2 }' $path/config`
 351   else
 352     rootfs=$path/rootfs
 353   fi
 354 fi
 355 if ! install_plamo ; then
 356   echo "Failed to install plamo $release."
 357   exit 1
 358 fi
 359 if ! configure_plamo ; then
 360   echo "Failed to configure plamo $release for a container."
 361   exit 1
 362 fi
 363 if ! copy_configuration ; then
 364   echo "Failed to write configuration file."
 365   exit 1
 366 fi
 367 post_process
 368 if [ -n "$bindhome" ] ; then
 369   do_bindhome
 370 fi
 371 if [ $clean -eq 1 ] ; then
 372   cleanup || exit 1
 373   exit 0
 374 fi