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# 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
# postremove.subr -- post-removal actions for packages
#
# SYNOPSIS
# task_postremove <datafile>
#
# DESCRIPTION
# The task_postremove function performs actions that SHOULD occur
# AFTER deleting the package files:
#
# o Unregister shells from the system shells database.
# o Update fonts databases.
# o Update caches within GTK+ icon theme directories.
# o Rebuild the system run-time library search path database.
# o Update OCaml module run-time library search path database.
# o Remove empty directories.
# o Remove unused users.
# o Remove unused groups.
#
# 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.
#
# ENVIRONMENT
# The following variables are used if they are set:
#
# TASK_VERBOSE
# List of package tasks that should emit verbose output.
# If ${TASK_VERBOSE} is "all", then all tasks are verbose.
# If ${TASK_VERBOSE} is "none", then no tasks are verbose.
# Otherwise, if one of the tasks is "default", then the
# default list of tasks are verbose.
#
__task_postremove__="yes"
task_load directories
task_load files
task_load fonts
task_load groups
task_load icon_themes
task_load info_files
task_load ocaml_findlib
task_load shells
task_load shlibs
task_load sort
task_load taskfunc
task_load users
task_postremove()
{
: ${TASK_VERBOSE:=default}
[ $# -gt 0 ] || return 127
local datafile="$1"; shift
[ -f "$datafile" ] || return 1
local post_tasks=
# Remove shells from the system shells database.
post_tasks="shells"
# Update font databases.
post_tasks="$post_tasks fonts"
# Update GTK+ icon theme caches
post_tasks="$post_tasks icon_themes"
# Rebuild the system run-time library search path database.
post_tasks="$post_tasks shlibs"
# Update OCaml module run-time library search path database.
post_tasks="$post_tasks ocaml_findlib"
# Remove empty directories.
post_tasks="$post_tasks directories"
# Remove unused users.
post_tasks="$post_tasks users"
# Remove unused groups.
post_tasks="$post_tasks groups"
# Run generic package tasks.
post_tasks="$post_tasks function"
# Seed checks with actions from preremove, in order.
local post_checks="info_files files"
local result=0
local stage="postremove"
# $verbose are the package tasks that give verbose output.
# Expand "all", "default" and "none" to a fixed list of tasks.
#
local verbose="${TASK_VERBOSE}"
case " $verbose " in
" all ")
verbose="directories fonts function groups icon_themes"
verbose="$verbose ocaml_findlib shells shlibs users" ;;
*" default "*)
# These tasks are verbose by default since they touch
# system files and directories.
#
verbose="$verbose directories groups shells users" ;;
" none ")
verbose= ;;
esac
local task post_fn silent action_result
for task in $post_tasks; do
post_fn="task_$task"
case " $verbose " in
*" $task "*)
silent= ;;
*) silent="-s" ;;
esac
case $task in
directories)
# Reverse-sort data lines for this task.
task_sort -r < $datafile | $post_fn $silent remove $stage ;;
*) $post_fn $silent remove $stage < $datafile ;;
esac
action_result="$?"
case $task in
icon_themes)
# Any errors in updating icon caches during postremove
# are non-fatal, so adjust the action result.
#
action_result=0 ;;
esac
[ $action_result -eq 0 ] || result=1
post_checks="$post_checks $task"
done
# Run all checks after all post-removal actions have completed
# and write messages to standard output for any checks that don't
# pass.
#
for check in $post_checks; do
post_fn="task_$check"
case $check in
directories)
# Reverse-sort data lines for this task.
task_sort -r < $datafile | $post_fn check-remove $stage ;;
*) $post_fn check-remove $stage < $datafile ;;
esac
done
return $result
}
|
