packages/ifupdown2/debian/python-ifupdown2.preinst

   1 #!/bin/sh
   2 # preinst script for newpkg
   3 #
   4 # see: dh_installdeb(1)
   5
   6 set -e
   7
   8 # summary of how this script can be called:
   9 #        * <new-preinst> `install'
  10 #        * <new-preinst> `install' <old-version>
  11 #        * <new-preinst> `upgrade' <old-version>
  12 #        * <old-preinst> `abort-upgrade' <new-version>
  13 # for details, see http://www.debian.org/doc/debian-policy/ or
  14 # the debian-policy package
  15
  16 preinst_upgrade()
  17 {
  18         local oldver="$1"
  19         local udev_user_rulesdir="/etc/udev/rules.d"
  20
  21         # we have to fixup the filesystem here as previous packages of
  22         # ifupdown2 introduced a bug in the postrm script that require
  23         # these files to exist, otherwise the postrm script will always
  24         # fail.
  25         local badver="0.1-cl2.5+2"
  26         if dpkg --compare-versions "${oldver}" "lt" "${badver}"; then
  27                 local files="${udev_user_rulesdir}/80-networking.rules
  28                         ${udev_user_rulesdir}/60-bridge-network-interface.rules"
  29                 for f in ${files}; do
  30                         echo "touching udev rule: ${f}"
  31                         test ! -e "${f}" && ln -s /dev/null "${f}" || \
  32                                 /bin/echo -e "\tudev rule exists leaving"
  33                 done
  34         fi
  35 }
  36
  37 case "$1" in
  38         install|upgrade)
  39                 preinst_upgrade "$2"
  40         ;;
  41
  42         abort-upgrade)
  43         ;;
  44
  45         *)
  46                 echo "preinst called with unknown argument \`$1'" >&2
  47                 exit 1
  48         ;;
  49 esac
  50
  51 # dh_installdeb will replace this with shell code automatically
  52 # generated by other debhelper scripts.
  53
  54 #DEBHELPER#
  55
  56 exit 0