dos.subr revision 260678 
1if [ ! "$_MEDIA_DOS_SUBR" ]; then _MEDIA_DOS_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: stable/10/usr.sbin/bsdconfig/share/media/dos.subr 260678 2014-01-15 07:49:17Z dteske $
28#
29############################################################ INCLUDES
30
31BSDCFG_SHARE="/usr/share/bsdconfig"
32. $BSDCFG_SHARE/common.subr || exit 1
33f_dprintf "%s: loading includes..." media/dos.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
45DOS_MOUNTED=
46
47############################################################ FUNCTIONS
48
49# f_media_set_dos
50#
51# Return success if we both found and set the media type to be a DOS partition.
52#
53f_media_set_dos()
54{
55	f_media_close
56
57	local devs ndevs
58	f_device_find "" $DEVICE_TYPE_DOS devs
59	f_count ndevs $devs
60
61	if [ ${ndevs:=0} -eq 0 ]; then
62		f_show_msg "$msg_no_dos_primary_partitions_found"
63		return $FAILURE
64	elif [ $ndevs -gt 1 ]; then
65		local title="$msg_choose_a_dos_partition"
66		local prompt="$msg_please_select_dos_partition"
67		local hline=""
68
69		local dev retval
70		dev=$( f_device_menu \
71			"$title" "$prompt" "$hline" $DEVICE_TYPE_DOS \
72			2>&1 >&$DIALOG_TERMINAL_PASSTHRU_FD )
73		retval=$?
74		[ "$dev" ] || return $FAILURE
75
76		f_device_find "$dev" $DEVICE_TYPE_DOS devs
77		[ "$devs" ] || return $FAILURE
78		dev="${devs%%[$IFS]*}"
79
80		f_struct_copy device_$dev device_media
81		[ $retval -eq $SUCCESS ] || return $FAILURE
82	else
83		f_struct_copy device_$devs device_media
84	fi
85
86	f_struct device_media || return $FAILURE
87}
88
89# f_media_init_dos $device
90#
91# Initializes the DOS media device. Returns success if able to mount the DOS
92# partition device using mount_msdosfs(8).
93#
94f_media_init_dos()
95{
96	local funcname=f_media_init_dos
97	local dev="$1" devname err
98
99	device_$dev get devname devname || return $FAILURE
100	f_dprintf "Init routine called for DOS device. devname=[%s]" \
101	          "$devname"
102
103	if [ "$DOS_MOUNTED" ]; then
104		f_dprintf "DOS device already mounted."
105		return $SUCCESS
106	fi
107
108	if [ ! -e "$MOUNTPOINT" ]; then
109		f_eval_catch $funcname mkdir 'mkdir -p "%s"' "$MOUNTPOINT" ||
110			return $FAILURE
111	fi
112
113	if ! f_eval_catch -dk err $funcname mount_msdosfs \
114		'mount_msdosfs "%s" "%s"' "$devname" "$MOUNTPOINT"
115	then
116		err="${err#mount_msdosfs: }"; err="${err#$devname: }"
117		f_show_msg "$msg_error_mounting_device" \
118		           "$devname" "$MOUNTPOINT" "$err"
119		return $FAILURE
120	fi
121	DOS_MOUNTED=1
122	return $SUCCESS
123}
124
125# f_media_get_dos $device $file [$probe_type]
126#
127# Returns data from $file on a mounted DOS partition device. Similar to cat(1).
128# If $probe_type is present and non-NULL, returns success if $file exists. If
129# $probe_type is equal to $PROBE_SIZE, prints the size of $file in bytes to
130# standard-out.
131#
132f_media_get_dos()
133{
134	local dev="$1" file="$2" probe_type="$3"
135
136	f_dprintf "f_media_get_dos: dev=[%s] file=[%s] probe_type=%s" \
137	          "$dev" "$file" "$probe_type"
138
139	f_media_generic_get "$MOUNTPOINT" "$file" "$probe_type"
140}
141
142# f_media_shutdown_dos $device
143#
144# Shuts down the DOS partition device using umount(8). Return status should be
145# ignored.
146#
147f_media_shutdown_dos()
148{
149	local funcname=f_media_shutdown_dos
150	local dev="$1" err
151
152	[ "$DOS_MOUNTED" ] || return $FAILURE
153
154	if ! f_eval_catch -dk err $funcname umount \
155		'umount -f "%s"' "$MOUNTPOINT"
156	then
157		err="${err#umount: }"; err="${err#*: }"
158		f_show_msg "$msg_could_not_unmount_the_dos_partition" \
159		           "$MOUNTPOINT" "$err"
160	else
161		DOS_MOUNTED=
162	fi
163}
164
165############################################################ MAIN
166
167f_dprintf "%s: Successfully loaded." media/dos.subr
168
169fi # ! $_MEDIA_DOS_SUBR
170