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
|
# Copyright (c) 2017 The NetBSD Foundation, Inc.
# All rights reserved.
#
# This code is derived from software contributed to The NetBSD Foundation
# by Johnny C. Lam.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# 1. Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
# ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
# TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
# BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.
#
# NAME
# preremove.subr -- pre-removal actions for packages
#
# SYNOPSIS
# task_preremove <datafile>
#
# DESCRIPTION
# The task_preremove function performs actions that MUST occur BEFORE
# deleting the package files for the removal to be successful:
#
# o Unregister GNU info files.
# o Remove GTK+ icon theme caches.
# o Remove unmodified configuration files.
#
# The datafile contains lines of the form:
#
# # <keyword>: <arg> ...
#
# These lines are used as input to the various script functions.
#
# RETURN VALUES
# Returns 0 on success, and >0 if an error occurs.
#
__task_preremove__="yes"
task_load files
task_load icon_themes
task_load info_files
task_load sort
task_load taskfunc
task_preremove()
{
[ $# -gt 0 ] || return 127
local datafile="$1"; shift
[ -f "$datafile" ] || return 1
local stage="preremove"
# Unregistering a GNU info files requires reading the file to find
# all nodes listed in the file, so it must be done before the file
# is removed. Any errors in unregistering GNU info files are
# non-fatal.
#
task_info_files -s remove $stage < $datafile
# GTK+ icon theme caches exist in the package installation
# directory, so they must be removed before their packages can be
# successfully removed. Any errors in removing icon caches are
# non-fatal.
#
task_icon_themes -s remove $stage < $datafile
# Removing a configuration file requires comparing it to the
# example file from which it was copied, so it must be done before
# the example file is removed. Any errors in removing
# configuration files are non-fatal.
#
task_files remove $stage < $datafile
# Run the generic package tasks.
if task_sort -r < $datafile | task_function remove $stage; then
: "success"
else
# Errors from the generic package tasks are fatal.
return 1
fi
return 0
}
|