usb.subr revision 260678 
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 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/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	f_count ndevs $devs
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 funcname=f_media_init_usb
107	local dev="$1" devname err
108
109	device_$dev get devname devname || return $FAILURE
110	f_dprintf "Init routine called for USB device. devname=[%s]" \
111	          "$devname"
112
113	if [ "$USB_MOUNTED" ]; then
114		f_dprintf "USB device already mounted."
115		return $SUCCESS
116	fi
117
118	if [ ! -e "$MOUNTPOINT" ]; then
119		f_eval_catch $funcname mkdir 'mkdir -p "%s"' "$MOUNTPOINT" ||
120			return $FAILURE
121	fi
122
123	if f_eval_catch -dk err $funcname mount \
124		'mount "%s" "%s"' "$devname" "$MOUNTPOINT"
125	then
126		USB_MOUNTED=1
127		return $SUCCESS
128	fi
129
130	err="${err#mount: }"; err="${err#$devname: }"
131	f_show_msg "$msg_error_mounting_usb_drive" \
132	           "$devname" "$MOUNTPOINT" "$err"
133	return $FAILURE
134}
135
136# f_media_get_usb $device $file [$probe_type]
137#
138# Returns data from $file on a mounted USB disk device. Similar to cat(1). If
139# $probe_type is present and non-NULL, returns success if $file exists. If
140# $probe_type is equal to $PROBE_SIZE, prints the size of $file in bytes to
141# standard-out.
142#
143f_media_get_usb()
144{
145	local dev="$1" file="$2" probe_type="$3"
146
147	f_dprintf "f_media_get_usb: dev=[%s] file=[%s] probe_type=%s" \
148	          "$dev" "$file" "$probe_type"
149
150	f_media_generic_get "$MOUNTPOINT" "$file" "$probe_type"
151}
152
153# f_media_shutdown_usb $device
154#
155# Shuts down the USB disk device using umount(8). Return status should be
156# ignored.
157#
158f_media_shutdown_usb()
159{
160	local funcname=f_media_shutdown_usb
161	local dev="$1" err
162
163	[ "$USB_MOUNTED" ] || return $FAILURE
164
165	if ! f_eval_catch -dk err $funcname umount \
166		'umount -f "%s"' "$MOUNTPOINT"
167	then
168		err="${err#umount: }"; err="${err#*: }"
169		f_show_msg "$msg_could_not_unmount_the_ufs_partition" \
170		           "$MOUNTPOINT" "$err"
171	else
172		USB_MOUNTED=
173	fi
174}
175
176############################################################ MAIN
177
178f_dprintf "%s: Successfully loaded." media/usb.subr
179
180fi # ! $_MEDIA_USB_SUBR
181