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
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
|
#!/bin/sh
# Debian wdm package pre-removal script
# Copyright 2001 Branden Robinson.
# Copyright 2005 Vladimir Shakhov.
# Licensed under the GNU General Public License, version 2. See the file
# /usr/share/common-licenses/GPL or <http://www.gnu.org/copyleft/gpl.txt>.
# Acknowlegements to Stephen Early, Mark Eichin, and Manoj Srivastava.
set -e
THIS_PACKAGE=wdm
DEFAULT_DISPLAY_MANAGER_FILE=/etc/X11/default-display-manager
HAVE_DEBCONF=
if [ -e /usr/share/debconf/confmodule ]; then
. /usr/share/debconf/confmodule
HAVE_DEBCONF=yes
fi
message () {
# pretty-print messages of arbitrary length
echo "$*" | fold -s -w ${COLUMNS:-80} >&2;
}
message_nonl () {
# pretty-print messages of arbitrary length (no trailing newline)
echo -n "$*" | fold -s -w ${COLUMNS:-80} >&2;
}
errormsg () {
# exit script with error
message "$*"
exit 1;
}
parseans () {
if [ ! $1 ]; then
echo $DEFAULT
else
echo $1 | cut -c1 | tr '[A-Z]' '[a-z]';
fi;
}
trap "message ;\
message 'Received signal. Aborting wdm package prerm script.' ;\
message ;\
exit 1" 1 2 3 15
case "$1" in
# we NEVER want to stop wdm without doing some checks first, see below
upgrade|failed-upgrade)
REMOVING=
;;
remove|deconfigure)
REMOVING=yes
;;
esac
STOP=
# are we supposed to restart on upgrade? if REMOVING wdm, we don't care
if grep -qs ^restart-on-upgrade /etc/X11/wdm/wdm.options || [ -n "$REMOVING" ]; then
# is there an wdm process running?
if start-stop-daemon --stop --quiet --signal 0 --exec /usr/bin/wdm; then
# any children?
PARENTS=$(pidof /usr/bin/wdm || true)
CHILDREN=
for PROCESS in $PARENTS; do
# make sure we got numbers back
if ! [ $PROCESS -eq $PROCESS ] 2> /dev/null; then
# freak out
errormsg "ERROR: pidof returned non-numeric value!"
fi
# we could use grep -q here if ps would ignore SIGPIPE :-P
if (ps axj | grep "^ *$PROCESS" > /dev/null 2>&1); then
CHILDREN=yes
fi
done
if [ -n "$CHILDREN" ]; then
#message "WARNING: Preparing to stop WINGs display manager (wdm) daemon," \
# "and it appears to be managing at least one running X" \
# "session. If wdm is stopped now, any X sessions it manages" \
# "will be terminated. Otherwise you may leave wdm running," \
# "and the new version will take effect the next time wdm is" \
# "restarted."
message "WARNING: Preparing to stop WINGs display manager (wdm) daemon"
DEFAULT=n
VALID_ANSWER=
while [ -z "$VALID_ANSWER" ]; do
#message_nonl "Do you wish to stop the wdm daemon? (y/n) [$DEFAULT] "
#read ANSWER # because failed to tun
ANSWER=y
ANSWER=$(parseans $ANSWER)
case "$ANSWER" in
y) VALID_ANSWER=true; STOP=yes ;;
n) VALID_ANSWER=true ;;
*) message "\"$ANSWER\" not understood." ;;
esac
done
else
STOP=yes
fi
fi
fi
if [ -n "$STOP" ]; then
if which invoke-rc.d >/dev/null 2>&1; then
invoke-rc.d wdm stop
else
/etc/init.d/wdm stop || true
fi
else
if [ "$1" = "upgrade" -o "$1" = "failed-upgrade" ]; then
touch /var/run/wdm.upgrade
fi
fi
if [ "$1" = "remove" -o "$1" = "deconfigure" ]; then
if [ -n "$HAVE_DEBCONF" ]; then
# disown this question
db_unregister shared/default-x-display-manager
# does the question still exist?
if db_get shared/default-x-display-manager; then
if db_metaget shared/default-x-display-manager owners; then
# FIXME - redo this part uses shell-lib.sh from xfree86
#observe "X display managers now available are \"$OWNERS\""
db_subst shared/default-x-display-manager choices "$RET"
fi
DEFAULT_DISPLAY_MANAGER=
if db_get shared/default-x-display-manager; then
DEFAULT_DISPLAY_MANAGER="$RET"
fi
# are we removing the currently selected display manager?
if [ -n "$DEFAULT_DISPLAY_MANAGER" ]; then
if [ "$THIS_PACKAGE" = "$DEFAULT_DISPLAY_MANAGER" ]; then
if [ -e "$DEFAULT_DISPLAY_MANAGER_FILE" ]; then
if db_get "$DEFAULT_DISPLAY_MANAGER/daemon_name"; then
# does the display manager file reference the current default?
# if so, remove it because it will now be wrong
if [ -n "$RET" ]; then
if [ "$(cat "$DEFAULT_DISPLAY_MANAGER_FILE")" = "$RET" ]; then
rm "$DEFAULT_DISPLAY_MANAGER_FILE"
fi
fi
fi
fi
# ask the user to choose a new default
db_fset shared/default-x-display-manager seen false
db_input critical shared/default-x-display-manager || true
db_go
# if the default display manager file doesn't exist, write it with
# the path to the new default display manager
if [ ! -e "$DEFAULT_DISPLAY_MANAGER_FILE" ]; then
DEFAULT_DISPLAY_MANAGER=
if db_get shared/default-x-display-manager; then
DEFAULT_DISPLAY_MANAGER="$RET"
fi
if [ -n "$DEFAULT_DISPLAY_MANAGER" ]; then
# FIXME - redo this part uses shell-lib.sh from xfree86
#warn "new default display manager has been selected; " \
# "please be sure to run \"dpkg-reconfigure $RET\" " \
# "to ensure that it is configured"
DAEMON_NAME=
if db_get "$DEFAULT_DISPLAY_MANAGER"/daemon_name; then
DAEMON_NAME="$RET"
fi
if [ ! -n "$DAEMON_NAME" ]; then
# if we were unable to determine the name of the selected
# daemon (for instance, if the selected default display
# manager doesn't provide a daemon_name question), guess
DAEMON_NAME=$(which "$DEFAULT_DISPLAY_MANAGER" 2>/dev/null)
if [ ! -n "$DAEMON_NAME" ]; then
echo .
# FIXME - redo this part uses shell-lib.sh from xfree86
#warn "unable to determine path to default X display manager"
\
# "$DEFAULT_DISPLAY_MANAGER; not updating" \
# "$DEFAULT_DISPLAY_MANAGER_FILE"
fi
fi
if [ -n "$DAEMON_NAME" ]; then
echo "$DAEMON_NAME" > "$DEFAULT_DISPLAY_MANAGER_FILE"
fi
fi
fi
fi
fi
fi
fi
fi
#DEBHELPER#
exit 0
# vim:set ai et sts=2 sw=2 tw=0:
# Local Variables:
# mode: shell-script
# sh-indentation: 2
# sh-basic-offset: 2
# End:
|
