usb.subr revision 256281 
1if [ ! "$_MEDIA_USB_SUBR" ]; then _MEDIA_USB_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/usb.subr 256181 2013-10-09 08:12:26Z dteske $
28#
29############################################################ INCLUDES
30
31BSDCFG_SHARE="/usr/share/bsdconfig"
32. $BSDCFG_SHARE/common.subr || exit 1
33f_dprintf "%s: loading includes..." media/usb.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
45USB_MOUNTED=
46
47############################################################ FUNCTIONS
48
49# f_media_set_usb
50#
51# Attempt to use USB as the media type. Return success if we both found and set
52# the media type to be a USB drive.
53#
54f_media_set_usb()
55{
56	f_media_close
57
58	local devs ndevs
59	f_device_find "" $DEVICE_TYPE_USB devs
60	ndevs=$( set -- $devs; echo $# )
61
62	if [ ${ndevs:=0} -eq 0 ]; then
63		f_show_msg "$msg_no_usb_devices_found"
64		return $FAILURE
65	elif [ $ndevs -gt 1 ]; then
66		local title="$msg_choose_a_usb_drive"
67		local prompt="$msg_please_select_a_usb_drive"
68		local hline=""
69
70		local dev retval
71		dev=$( f_device_menu \
72			"$title" "$prompt" "$hline" $DEVICE_TYPE_USB \
73			2>&1 >&$DIALOG_TERMINAL_PASSTHRU_FD )
74		retval=$?
75		[ "$dev" ] || return $FAILURE
76
77		f_device_find "$dev" $DEVICE_TYPE_USB devs
78		[ "$devs" ] || return $FAILURE
79		dev="${devs%%[$IFS]*}"
80
81		f_struct_copy device_$dev device_media
82		[ $retval -eq $SUCCESS ] || return $FAILURE
83	else
84		f_struct_copy device_$devs device_media
85	fi
86
87	f_struct device_media &&
88		device_media unset private
89
90	if f_interactive; then
91		local name
92		f_struct device_media get name name
93		f_show_msg "$msg_using_usb_device" "$name"
94	fi
95
96	f_struct device_media || return $FAILURE
97}
98
99# f_media_init_usb $device
100#
101# Initializes the USB media device. Returns success if able to mount the USB
102# disk device using mount(8).
103#
104f_media_init_usb()
105{
106	local dev="$1" devname err
107
108	device_$dev get devname devname || return $FAILURE
109	f_dprintf "Init routine called for USB device. devname=[%s]" \
110	          "$devname"
111
112	if [ "$USB_MOUNTED" ]; then
113		f_dprintf "USB device already mounted."
114		return $SUCCESS
115	fi
116
117	if [ ! -e "$MOUNTPOINT" ] &&
118	   ! err=$( mkdir -p "$MOUNTPOINT" 2>&1 )
119	then
120		f_dialog_msgbox "$err"
121		return $FAILURE
122	fi
123
124	if err=$( mount "$devname" "$MOUNTPOINT" 2>&1 ); then
125		USB_MOUNTED=1
126		return $SUCCESS
127	fi
128
129	err="${err#mount: }"; err="${err#$devname: }"
130	f_show_msg "$msg_error_mounting_usb_drive" \
131	           "$devname" "$MOUNTPOINT" "$err"
132	return $FAILURE
133}
134
135# f_media_get_usb $device $file [$probe_type]
136#
137# Returns data from $file on a mounted USB disk device. Similar to cat(1). If
138# $probe_type is present and non-NULL, returns success if $file exists. If
139# $probe_type is equal to $PROBE_SIZE, prints the size of $file in bytes to
140# standard-out.
141#
142f_media_get_usb()
143{
144	local dev="$1" file="$2" probe_type="$3"
145
146	f_dprintf "f_media_get_usb: dev=[%s] file=[%s] probe_type=%s" \
147	          "$dev" "$file" "$probe_type"
148
149	f_media_generic_get "$MOUNTPOINT" "$file" "$probe_type"
150}
151
152# f_media_shutdown_usb $device
153#
154# Shuts down the USB disk device using umount(8). Return status should be
155# ignored.
156#
157f_media_shutdown_usb()
158{
159	local dev="$1" err
160
161	[ "$USB_MOUNTED" ] || return $FAILURE
162
163	if ! err=$( umount -f "$MOUNTPOINT" 2>&1 ); then
164		err="${err#umount: }"; err="${err#*: }"
165		f_show_msg "$msg_could_not_unmount_the_ufs_partition" \
166		           "$MOUNTPOINT" "$err"
167	else
168		USB_MOUNTED=
169	fi
170}
171
172############################################################ MAIN
173
174f_dprintf "%s: Successfully loaded." media/usb.subr
175
176fi # ! $_MEDIA_USB_SUBR
177