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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
# preinstall.subr -- pre-installation actions for packages
#
# SYNOPSIS
# task_preinstall <datafile>
#
# DESCRIPTION
# The task_preinstall function performs actions that MUST occur
# successfully BEFORE the package files are installed into their
# final location for the installation to be successful:
#
# o Ensure that all required groups and users exist.
# o Create required directories.
#
# 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_preinstall__="yes"
task_load directories
task_load groups
task_load sort
task_load taskfunc
task_load users
task_preinstall()
{
: ${TASK_VERBOSE:=default}
[ $# -gt 0 ] || return 127
local datafile="$1"; shift
[ -f "$datafile" ] || return 1
local stage="preinstall"
# $verbose are the package tasks that give verbose output.
# Expand "all", "default" and "none" to a fixed list of tasks.
#
local verbose="${TASK_VERBOSE}"
case " $verbose " in
" all "|*" default "*)
verbose="directories function groups users" ;;
" none ")
verbose= ;;
esac
local silent
# Require necessary groups and users before actions that may
# set permissions.
#
case " $verbose " in
*" groups "*)
silent= ;;
*) silent="-s" ;;
esac
task_groups $silent add $stage < $datafile
if task_groups check-add $stage < $datafile; then
: "groups exist"
else
# Fatal error: groups are missing.
return 1
fi
case " $verbose " in
*" users "*)
silent= ;;
*) silent="-s" ;;
esac
task_users $silent add $stage < $datafile
if task_users check-add $stage < $datafile; then
: "users exist"
else
# Fatal error: users are missing.
return 1
fi
# Create directories so that pre-existing directories can be
# correctly identified. Sort the entries prior to creation to
# create path components in order. Any errors in creating
# directories are non-fatal.
#
case " $verbose " in
*" directories "*)
silent= ;;
*) silent="-s" ;;
esac
task_sort < $datafile | task_directories $silent add $stage
# Run the generic package tasks.
case " $verbose " in
*" function "*)
silent= ;;
*) silent="-s" ;;
esac
if task_function $silent add $stage < $datafile; then
: "success"
else
# Fatal error: failures in generic package tasks.
return 1
fi
return 0
}
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