debian/dselect.prerm

   1 #!/bin/sh
   2 # See deb-prerm(5).
   3
   4 set -e
   5
   6 : "${DPKG_ADMINDIR:=/var/lib/dpkg}"
   7
   8 # Rename state directories to match renamed method names.
   9 rename_method_state_dir() {
  10   methodoldname="$1"
  11   methodoldopt="$2"
  12   methodnewname="$3"
  13   methodnewopt="$4"
  14   methodsdir="$DPKG_ADMINDIR/methods"
  15
  16   if [ -d "$methodsdir/$methodoldname" ]; then
  17     if [ -e "$methodsdir/$methodnewname" ]; then
  18       rm -rf "$methodsdir/$methodoldname"
  19     else
  20       if [ -e "$methodsdir/$methodoldname/shvar.$methodoldopt" ]; then
  21         cp -a "$methodsdir/$methodoldname/shvar.$methodoldopt" \
  22               "$methodsdir/$methodoldname/shvar.$methodnewopt"
  23       fi
  24       mv "$methodsdir/$methodoldname" "$methodsdir/$methodnewname"
  25       rm -f "$methodsdir/$methodnewname/shvar.$methodoldopt"
  26     fi
  27     # Update the currently selected method and option if needed.
  28     sed -i -e "s/^$methodoldname $methodoldopt/$methodnewname $methodnewopt/" \
  29       "$DPKG_ADMINDIR/cmethopt"
  30   fi
  31 }
  32
  33 case "$1" in
  34 upgrade)
  35   if dpkg --compare-versions "$2" lt 1.21.3; then
  36     # Downgrade
  37     rename_method_state_dir file file disk mounted
  38     rename_method_state_dir media media multicd multi_cd
  39   fi
  40   ;;
  41 deconfigure|remove|failed-upgrade)
  42   ;;
  43 *)
  44   echo "$0 called with unknown argument '$1'" 1>&2
  45   exit 1
  46   ;;
  47 esac
  48
  49 #DEBHELPER#
  50
  51 exit 0