src/lib/release-rootfs

   1 #!/bin/bash
   2
   3 # Copyright (C) 2016 NIWA Hideyuki
   4
   5 PATH=/usr/lib/fulcon/lib/:$PATH
   6
   7 # BASE dir
   8 CONTAINER_DIR=/var/lib/fulcon/setup
   9
  10 # check root
  11 if [ ${EUID:-$UID} -ne 0 ] ; then
  12   echo "error: Because you are not root, you cannot execute this command."
  13   exit 1
  14 fi
  15
  16 usage () {
  17         echo "usage ; release-rootfs NAME"
  18 }
  19
  20 # check arts
  21 if [ $# -ne 1 ]; then
  22         usage
  23         exit -1
  24 fi
  25
  26 umask 022
  27
  28 LXCNAME=$1
  29
  30 rootfs=$CONTAINER_DIR/$LXCNAME/rootfs
  31
  32 lsdir() {
  33   ls -f --ind=none $1 | sed '/^\.\{1,2\}$/d'
  34 }
  35
  36 # release root dir
  37
  38 # release /usr
  39 umount $rootfs/usr >& /dev/null
  40 rmdir  $rootfs/usr >& /dev/null
  41
  42 # release /bin
  43 if [ ! -L $rootfs/bin ]; then
  44         umount $rootfs/bin >& /dev/null
  45         rmdir  $rootfs/bin >& /dev/null
  46 else
  47         rm -f $rootfs/bin
  48 fi
  49
  50 # release /sbin
  51 if [ ! -L $rootfs/sbin ]; then
  52         umount $rootfs/sbin >& /dev/null
  53         rmdir  $rootfs/sbin >& /dev/null
  54 else
  55         rm -f $rootfs/sbin
  56 fi
  57
  58 # release /lib64
  59 if [ ! -L $rootfs/lib64 ]; then
  60         umount $rootfs/lib64 >& /dev/null
  61         rmdir  $rootfs/lib64 >& /dev/null
  62 else
  63         rm -f $rootfs/lib64
  64 fi
  65
  66 # release /var/lib
  67 for i in `lsdir /var/lib`; do
  68         if [ -d $rootfs/var/lib/$i ] ; then
  69                 if [ x"$i" != x"fulcon" -a x"$i" != x"tmp" -a \
  70                                 x"$i" != x"docker" -a \
  71                                 x"$i" != x"libvirt" -a x"$i" != x"slot-os" ]; then
  72                         umount $rootfs/var/lib/$i >& /dev/null
  73                         rmdir  $rootfs/var/lib/$i >& /dev/null
  74                 else
  75                         rmdir  $rootfs/var/lib/$i
  76                 fi
  77         fi
  78 done
  79
  80 # release /var
  81 rm -rf $rootfs/var/log
  82 for i in `lsdir /var` ; do
  83         if [ -L $rootfs/var/$i ] ; then
  84                 rm -f $rootfs/var/$i
  85         elif [ -d $rootfs/var/$i ] ; then
  86                 if [ x"$i" == x"lib" ]; then
  87                         rmdir  $rootfs/var/$i >& /dev/null
  88                 else
  89                         umount $rootfs/var/$i >& /dev/null
  90                         rmdir  $rootfs/var/$i >& /dev/null
  91                 fi
  92         fi
  93 done
  94
  95 rm -f  $rootfs/run/run
  96 rm -rf $rootfs/run
  97 rm -rf $rootfs/etc
  98 rm -rf $rootfs/home
  99 rm -rf $rootfs/lib
 100 rm -rf $rootfs/root
 101 rm -rf $rootfs/tmp
 102 rm -rf $rootfs/.autorelabel
 103
 104 for i in `lsdir /` ; do
 105         if [ -L $rootfs/$i ] ; then
 106                 rm -f $rootfs/$i
 107         elif [ -d $rootfs/$i ] ; then
 108                 rmdir $rootfs/$i
 109         fi
 110 done
 111
 112 exit 0