preinst is in libmtp9 1.1.6-20-g1b9f164-1ubuntu2.
This file is a maintainer script. It is executed when installing (*inst) or removing (*rm) the package.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 | #!/bin/sh
# preinst script for libmtp
set -e
PACKAGE=libmtp9
# Prepare to move a conffile without triggering a dpkg question
prep_mv_conffile() {
PKGNAME="$1"
CONFFILE="$2"
if [ -e "$CONFFILE" ]; then
md5sum="`md5sum \"$CONFFILE\" | sed -e \"s/ .*//\"`"
old_md5sum="`dpkg-query -W -f='${Conffiles}' $PKGNAME | sed -n -e \"\\\\' $CONFFILE '{s/ obsolete$//;s/.* //p}\"`"
if [ "$md5sum" = "$old_md5sum" ]; then
rm -f "$CONFFILE"
fi
fi
}
case "$1" in
install|upgrade)
# PART B: Check if file /etc/udev/libmtp.rules exists
# Do not mix with package-default rules file: /lib/udev/rules.d/libmtp8.rules
if [ -e "/etc/udev/libmtp.rules" ]; then
# Check if libmtp5 or early libmtp6 (<< 0.2.1-2) are installed (and not purged)
# Default: Remove /etc/udev/libmtp.rules
removeit="1"
# Get libmtp* package list in the format '${Package} ${Version}'
listpkgs="`dpkg-query -W -f '${Package} ${Version}\n' 'libmtp*' | grep '^libmtp[0-9]\+\ '`"
# Separate by new line
IFS=$(printf "\n")
for ipkg in $listpkgs; do
name="`echo $ipkg | cut -d' ' -f1`"
version="`echo $ipkg | cut -d' ' -f2`"
# Exception: Do not remove if libmtp5 is installed
if [ "$name" = "libmtp5" -a ! "$version" = "" ]; then
removeit="0"
fi
# Exception: Do not remove if libmtp6 (<< 0.2.1-2) is installed
if [ "$name" = "libmtp6" -a ! "$version" = ""]; then
if dpkg --compare-versions "$version" lt-nl "0.2.1-2"; then
removeit="0"
fi
fi
done
unset IFS
# If not installed, remove the old libmtp.rules
[ "$removeit" = "1" ] && rm -f /etc/udev/libmtp.rules
# Its symlink, /etc/udev/rules.d/libmtp.rules, is checked in postinst
fi
# PART C:
# Disabled until the package libmtp-common is made.
# /lib/udev/rules.d/libmtp8.rules is rules file installed by default.
# Do not mix with user-modified file: /etc/udev/rules.d/libmtp8.rules
# Will be replaced by unversioned /lib/udev/rules.d/45-libmtp.rules
#rm_conffile $PACKAGE /lib/udev/rules.d/45-libmtp8.rules
# PART D:
# Remove ancient /etc/udev/rules.d/65-libmtp.rules
if [ -e /etc/udev/rules.d/65-libmtp.rules ]; then
dpkg-maintscript-helper rm_conffile \
/etc/udev/rules.d/65-libmtp.rules -- "$@"
fi
esac
exit 0
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