common.subr revision 249823 
1if [ ! "$_MEDIA_COMMON_SUBR" ]; then _MEDIA_COMMON_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 (INLUDING, 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/common.subr 249823 2013-04-23 22:55:59Z dteske $
28#
29############################################################ INCLUDES
30
31BSDCFG_SHARE="/usr/share/bsdconfig"
32. $BSDCFG_SHARE/common.subr || exit 1
33f_dprintf "%s: loading includes..." media/common.subr
34f_include $BSDCFG_SHARE/struct.subr
35f_include $BSDCFG_SHARE/device.subr
36f_include $BSDCFG_SHARE/media/any.subr
37
38############################################################ GLOBALS
39
40#
41# Where to mount media
42#
43MOUNTPOINT=/dist
44
45############################################################ FUNCTIONS
46
47# f_media_open
48#
49# Returms success if able to initialize the media device.
50#
51f_media_open()
52{
53	{ # Verify and initialize device media if-defined
54		f_struct device_media &&
55		f_media_verify &&
56		f_device_init media
57	} || return $FAILURE
58}
59
60# f_media_close
61#
62# Shuts down the media device, see f_device_shutdown() from device.subr for
63# more details.
64#
65f_media_close()
66{
67	f_struct device_media &&
68		f_device_shutdown media
69	f_struct_free device_media
70}
71
72# f_media_verify
73#
74# Returns success if the media device is available, and if not, prompts the
75# user to select a media type. See f_media_get_type() from media/any.subr for
76# more details.
77#
78f_media_verify()
79{
80	f_struct device_media || f_media_get_type
81}
82
83# f_media_generic_get $base $file
84#
85# A generic open which follows a well-known "path" of places to look.
86# 
87f_media_generic_get()
88{
89	local base="$1" file="$2" rel path
90
91	f_getvar $VAR_RELNAME rel
92	for path in \
93		"$base/$file" \
94		"$base/FreeBSD/$file" \
95		"$base/releases/$file" \
96		"$base/$rel/$file" \
97	; do
98		if [ -f "$path" -a -r "$path" ]; then
99			cat "$path"
100			return
101		fi
102	done
103	cat "$base/releases/$rel/$file" # Final path to try
104}
105
106############################################################ MAIN
107
108f_dprintf "%s: Successfully loaded." media/common.subr
109
110fi # ! $_MEDIA_COMMON_SUBR
111