directory.subr revision 252987 
1if [ ! "$_MEDIA_DIRECTORY_SUBR" ]; then _MEDIA_DIRECTORY_SUBR=1
2#
3# Copyright (c) 2012-2013 Devin Teske
4# All rights reserved.
5#
6# Redistribution and use in source and binary forms, with or without
7# modification, are permitted provided that the following conditions
8# are met:
9# 1. Redistributions of source code must retain the above copyright
10#    notice, this list of conditions and the following disclaimer.
11# 2. Redistributions in binary form must reproduce the above copyright
12#    notice, this list of conditions and the following disclaimer in the
13#    documentation and/or other materials provided with the distribution.
14#
15# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18# ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25# SUCH DAMAGE.
26#
27# $FreeBSD: head/usr.sbin/bsdconfig/share/media/directory.subr 252987 2013-07-07 18:51:44Z dteske $
28#
29############################################################ INCLUDES
30
31BSDCFG_SHARE="/usr/share/bsdconfig"
32. $BSDCFG_SHARE/common.subr || exit 1
33f_dprintf "%s: loading includes..." media/directory.subr
34f_include $BSDCFG_SHARE/device.subr
35f_include $BSDCFG_SHARE/dialog.subr
36f_include $BSDCFG_SHARE/media/common.subr
37f_include $BSDCFG_SHARE/struct.subr
38f_include $BSDCFG_SHARE/variable.subr
39
40BSDCFG_LIBE="/usr/libexec/bsdconfig"
41f_include_lang $BSDCFG_LIBE/include/messages.subr
42
43############################################################ GLOBALS
44
45DIRECTORY_CHECKED=
46
47############################################################ FUNCTIONS
48
49# f_media_set_directory
50#
51# Return success if we both found and set the media type to be a local
52# directory.
53#
54# Variables from variable.subr that can be used to script user input:
55#
56# 	VAR_DIRECTORY_PATH
57# 		Path to an existing directory containing the FreeBSD
58# 		distribution files.
59#
60f_media_set_directory()
61{
62	local path
63
64	f_media_close
65
66	f_variable_get_value $VAR_DIRECTORY_PATH \
67		"$msg_enter_a_fully_qualified_pathname_for_the_directory"
68	f_getvar $VAR_DIRECTORY_PATH path
69	[ "$path" ] || return $FAILURE
70
71	f_struct_new DEVICE device_directory
72	device_directory set name     "$path"
73	device_directory set get      f_media_get_directory
74	device_directory set init     f_media_init_directory
75	device_directory set shutdown f_media_shutdown_directory
76	device_directory set private  "$path"
77
78	f_struct_copy device_directory device_media
79	f_struct_free device_directory
80
81	f_struct device_media || return $FAILURE
82}
83
84# f_media_init_directory $device
85#
86# Initializes the Directory media device. Returns success if the directory path
87# both exists and is a directory.
88#
89f_media_init_directory()
90{
91	local dev="$1" path
92
93	device_$dev get private path || return $FAILURE
94	f_dprintf "Init routine called for Directory device. path=[%s]" \
95	          "$path"
96
97	# Track whether we've been through here before (for remote filesystems
98	# mounted in the directory path, not repeating these queries saves us
99	# valuable time for slow/uncooperative links).
100	if [ "$DIRECTORY_CHECKED" ]; then
101		f_dprintf "Directory device already checked."
102		return $SUCCESS
103	fi
104
105	if [ ! -e "$path" ]; then
106		f_show_msg "$msg_no_such_file_or_directory" \
107		           "f_media_init_directory" "$path"
108		return $FAILURE
109	elif [ ! -d "$path" ]; then
110		f_show_msg "$msg_not_a_directory" \
111		           "f_media_init_directory" "$path"
112		return $FAILURE
113	fi
114	DIRECTORY_CHECKED=1
115	return $SUCCESS
116}
117
118# f_media_get_directory $device $file [$probe_only]
119#
120# Returns data from $file in the existing/current filesystem. Similar to
121# cat(1). If $probe_only is present and non-NULL, returns success if $file
122# exists.
123#
124f_media_get_directory()
125{
126	local dev="$1" file="$2" probe_only="$3" path
127
128	f_dprintf "f_media_get_directory: dev=[%s] file=[%s] probe_only=%s" \
129	          "$dev" "$file" "$probe_only"
130
131	device_$dev get private path
132	f_media_generic_get "$path" "$file" "$probe_only"
133}
134
135# f_media_shutdown_directory $device
136#
137# Shuts down the Directory device. Return status should be ignored.
138#
139f_media_shutdown_directory()
140{
141	DIRECTORY_CHECKED=
142}
143
144############################################################ MAIN
145
146f_dprintf "%s: Successfully loaded." media/directory.subr
147
148fi # ! $_MEDIA_DIRECTORY_SUBR
149