blob: a2d442e411576bafa13aba6a5d3974cab7b30f45 (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
|
# Helper function that will scan /dev/bus/usb for devices matching specific classes
# and then output the corresponding device ids. This can be used for selective
# handover of devices to a virtual machine
declare -rg PASSTHROUGH_USB_DEVICES="2 0:5 0:6 0:7 0:14 0:16 0:17 239"
# $1: expression to fill with device information.
# valid placeholders are:
# %VENDOR% - device vendor id
# %PRODUCT% - device product id
# $2-n: device classes to include in output
get_usb_devices_int() {
[ -z "$TMPDIR" ] && TMPDIR="/tmp"
local EXP=$1
shift
if [ -z "$EXP" ]; then
writelog --quiet "No ouput expression template passed to get_usb_devices"
cleanexit 1
fi
if [ $# -eq 0 ]; then
writelog --quiet "No device classes given to get_usb_devices"
cleanexit 1
fi
local MATCH=';'
while [ $# -gt 0 ]; do
MATCH+="$1;"
[[ "$1" != *:* ]] && MATCH+="0:$1;"
shift
done
local dev=
local key value trailing
trailing=
local tmp="${TMPDIR}/lsusb.$$.$RANDOM"
for dev in /dev/bus/usb/*/*; do
if ! lsusb -D "$dev" > "$tmp" 2>/dev/null; then
writelog --quiet "Cannot lsusb $dev"
continue
fi
local DC=
local OK=
local VENDOR=
local PRODUCT=
while read -r key value trailing || [ -n "$key" ]; do
if [[ "$key" == "idVendor" ]]; then
[[ "$value" == 0x* ]] && VENDOR="${value:2}"
elif [[ "$key" == "idProduct" ]]; then
[[ "$value" == 0x* ]] && PRODUCT="${value:2}"
elif [ -z "$DC" ]; then
# No bDeviceClass seen yet
if [[ "$key" == "bDeviceClass" ]]; then
DC="$value"
[[ "$MATCH" == *";${DC};"* ]] && OK=yo
fi
else
# #DeviceClass is generic, look at sub class
if [[ "$key" == "bInterfaceClass" ]]; then
[[ "$MATCH" == *";${DC}:${value};"* ]] && OK=yo
fi
fi
if [ -n "$OK" -a -n "$VENDOR" -a -n "$PRODUCT" ]; then
echo "$EXP" | sed "s/%VENDOR%/${VENDOR}/g;s/%PRODUCT%/${PRODUCT}/g"
break
fi
done < "$tmp"
done
rm -f -- "$tmp"
}
get_usb_devices() {
if which lsusb 2>/dev/null >&2 && lsusb --help 2>&1 | grep -q -- '-D' 2>/dev/null; then
[ $# -eq 1 ] && set -- "$1" $PASSTHROUGH_USB_DEVICES # no quotes here!
get_usb_devices_int "$@" | sort -u
else
writelog --quiet "Cannot scan usb bus: lsusb not found or doesn't support -D"
fi
}
|
