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#!/bin/sh
# SPDX-License-Identifier: GPL-2.0-or-later
#
# Copyright (c) 2009 Greg Kroah-Hartman <greg@kroah.com>
# Copyright (c) 2009 Randy Dunlap <rdunlap@xenotime.net>
# Copyright (c) 2009 Frans Pop <elendil@planet.nl>
#
# When checking with shellcheck ignore
# "In POSIX sh, local is undefined."
# every modern shell supports it.
# shellcheck disable=SC3043
print_string() {
file=$1
name=$2
if [ -f "$file" ]; then
echo "S: $name=$(cat "$file")"
fi
}
class_decode() {
class=$1 # v4: in hex
case $class in
"00") echo ">ifc " ;;
"01") echo "audio" ;;
"02") echo "commc" ;;
"03") echo "HID " ;;
"05") echo "PID " ;;
"06") echo "still" ;;
"07") echo "print" ;;
"08") echo "stor." ;;
"09") echo "hub " ;;
"0a") echo "data " ;;
"0b") echo "scard" ;;
"0d") echo "c-sec" ;;
"0e") echo "video" ;;
"0f") echo "perhc" ;;
"10") echo "av " ;;
"11") echo "blbrd" ;;
"12") echo "bridg" ;;
"dc") echo "diagd" ;;
"e0") echo "wlcon" ;;
"ef") echo "misc " ;;
"fe") echo "app. " ;;
"ff") echo "vend." ;;
"*") echo "unk. " ;;
esac
}
print_endpoint() {
eppath=$1
read -r addr < "$eppath/bEndpointAddress"
read -r attr < "$eppath/bmAttributes"
read -r dir < "$eppath/direction"
if [ "$dir" = "in" ]; then
dir="I"
elif [ "$dir" = "out" ]; then
dir="O"
elif [ "$dir" = "both" ]; then
dir="B"
fi
read -r eptype < "$eppath/type"
if [ "$eptype" = Control ]; then
eptype="Ctrl"
elif [ "$eptype" = Interrupt ]; then
eptype="Int."
fi
read -r maxps_hex < "$eppath/wMaxPacketSize"
maxps_hex="0x$maxps_hex"
# Extract MaxPS size (bits 0-10) and multiplicity values (bits 11-12)
maxps=$(($(printf "%4i*%s\n" $((maxps_hex & 0x7ff)) \
$((1 + ((maxps_hex >> 11) & 0x3))))))
read -r interval < "$eppath/interval"
printf "E: Ad=%s(%s) Atr=%s(%s) MxPS=%4s Ivl=%s\n" \
"$addr" "$dir" "$attr" "$eptype" "$maxps" "$interval"
}
print_interface() {
ifpath=$1
read -r ifnum < "$ifpath/bInterfaceNumber"
read -r altset < "$ifpath/bAlternateSetting"
read -r numeps < "$ifpath/bNumEndpoints"
read -r class < "$ifpath/bInterfaceClass"
read -r subclass < "$ifpath/bInterfaceSubClass"
read -r protocol < "$ifpath/bInterfaceProtocol"
if [ -L "$ifpath/driver" ]; then # v4: allow for no driver
driver=$(readlink "$ifpath/driver")
driver=${driver##*/}
else
driver="(none)"
fi
classname=$(class_decode "$class")
printf "I: If#=%2i Alt=%2i #EPs=%2i Cls=%s(%s) Sub=%s Prot=%s Driver=%s\n" \
"0x${ifnum#0}" "${altset#0}" "0x${numeps#0}" "$class" "$classname" "$subclass" \
"$protocol" "$driver"
for endpoint in "$ifpath"/ep_??
do
if [ -L "$endpoint" ] || [ -d "$endpoint" ]; then # v4: verify endpoint exists
print_endpoint "$endpoint"
fi
done
}
print_device() {
local devpath=$1
local parent=$2
local level=$3
local count=$4
[ -d "$devpath" ] || return
cd "$devpath" || return
read -r busnum < "busnum"
read -r devnum < "devnum"
if [ "$level" -gt 0 ]; then
port=$((${devpath##*[-.]} - 1))
else
port=0
fi
read -r speed < "speed"
read -r maxchild < "maxchild"
printf "\nT: Bus=%02i Lev=%02i Prnt=%02i Port=%02i Cnt=%02i Dev#=%3i Spd=%-4s MxCh=%2i\n" \
"$busnum" "$level" "$parent" "$port" "$count" "$devnum" "$speed" "$maxchild"
read -r ver < "version"
read -r devclass < "bDeviceClass"
read -r devsubclass < "bDeviceSubClass"
read -r devprotocol < "bDeviceProtocol"
read -r maxps0 < "bMaxPacketSize0"
read -r numconfigs < "bNumConfigurations"
classname="$(class_decode "$devclass")"
printf "D: Ver=%5s Cls=%s(%s) Sub=%s Prot=%s MxPS=%2i #Cfgs=%3i\n" \
"$ver" "$devclass" "$classname" "$devsubclass" "$devprotocol" \
"$maxps0" "$numconfigs"
read -r vendid < "idVendor"
read -r prodid < "idProduct"
read -r bcddevice < "bcdDevice"
revmajor="${bcddevice%%??}"
revminor="${bcddevice##??}"
printf "P: Vendor=%s ProdID=%s Rev=%s.%s\n" \
"$vendid" "$prodid" "$revmajor" "$revminor"
print_string manufacturer "Manufacturer"
print_string product Product
print_string serial SerialNumber
read -r numifs < "bNumInterfaces"
read -r cfgnum < "bConfigurationValue"
read -r attr < "bmAttributes"
read -r maxpower < "bMaxPower"
printf "C: #Ifs=%2i Cfg#=%2i Atr=%s MxPwr=%s\n" \
"$numifs" "$cfgnum" "$attr" "$maxpower"
# There's not really any useful info in endpoint 00
#print_endpoint $devpath/ep_00
for interface in "$busnum"-*:?.*
do
print_interface "$devpath/$interface"
done
devcount=0
for subdev in "$busnum"-*
do
echo "$subdev" | grep -Eq "^$busnum-[0-9]+(\.[0-9]+)*$" \
|| continue
devcount=$((devcount + 1))
if [ -d "$devpath/$subdev" ]; then
print_device "$devpath/$subdev" \
"$devnum" "$((level +1))" "$devcount"
fi
done
}
if [ ! -d /sys/bus ]; then
echo "Error: directory /sys/bus does not exist; is sysfs mounted?" >&2
exit 1
fi
for device in $(find /sys/bus/usb/devices -name 'usb*' -printf '%f\n' | sort -V)
do
print_device "/sys/bus/usb/devices/$device" 0 0 0
done
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