source: trunk/debathena/config/reactivate/debian/debathena-reactivate.preinst @ 24350

Revision 24350, 2.1 KB checked in by broder, 15 years ago (diff)
In reactivate: * Be more robust in the preinst when fixing schroot.conf.
  • Property svn:executable set to *
Line 
1#!/bin/sh
2# preinst script for debathena-reactivate
3#
4# see: dh_installdeb(1)
5
6set -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
17package=debathena-reactivate
18ours=.debathena
19theirs=.debathena-orig
20
21undivert_unlink_symlink()
22{
23    file="$1"
24    ourfile="$2"
25    theirfile="$3"
26    if [ ! -L "$file" ] || \
27        [ "$(readlink "$file")" != "$(basename "$ourfile")" -a \
28          "$(readlink "$file")" != "$(basename "$theirfile")" ]; then
29        echo "*** OMINOUS WARNING ***: $file is not linked to either $(basename "$ourfile") or $(basename "$theirfile")" >&2
30    else
31        rm -f "$file"
32    fi
33}
34
35undivert_unlink_divert()
36{
37    file="$1"
38    if [ ! -L "$file" ] && [ ! -e "$file" ]; then
39        dpkg-divert --remove --rename --package "$package" "$file"
40    else
41        echo "Not removing diversion of $file by $package" >&2
42    fi
43}
44
45undivert_unlink()
46{
47    prefix=$1
48    suffix=$2
49
50    file=$prefix$suffix
51    ourfile=$prefix$ours$suffix
52    theirfile=$prefix$theirs$suffix
53
54    undivert_unlink_symlink "$file" "$ourfile" "$theirfile"
55    undivert_unlink_divert "$file" "$package"
56}
57
58cleanup_old_diversion() {
59    file="$1"
60    if dpkg-divert --list "${file}" | grep -Fxq "diversion of ${file} to ${file}${theirs} by ${package}"; then
61        undivert_unlink "$file"
62    fi
63}
64       
65
66case "$1" in
67    install|upgrade)
68        cleanup_old_diversion /etc/gdm/PreSession/Default
69        cleanup_old_diversion /etc/gdm/PostSession/Default
70        if dpkg --compare-versions "$2" lt-nl 2.0~ && \
71            [ -w /etc/schroot/schroot.conf ] && \
72            grep -q '###ATHENA-BEGIN###' /etc/schroot/schroot.conf; then
73            sed -i -e '/###ATHENA-BEGIN###/,/###ATHENA-END###/d' /etc/schroot/schroot.conf
74        fi
75    ;;
76
77    abort-upgrade)
78    ;;
79
80    *)
81        echo "preinst called with unknown argument \`$1'" >&2
82        exit 1
83    ;;
84esac
85
86# dh_installdeb will replace this with shell code automatically
87# generated by other debhelper scripts.
88
89#DEBHELPER#
90
91exit 0
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