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lsusb.py
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#!/usr/bin/python2 # lsusb.py # Displays your USB devices in reasonable form. # (c) Kurt Garloff <garloff@suse.de>, 2/2009, GPL v2 or v3. # Usage: See usage() import os, sys, re, getopt # from __future__ import print_function # Global options showint = False showhubint = False noemptyhub = False nohub = False warnsort = False prefix = "/sys/bus/usb/devices/" usbids = "/usr/share/hwdata/usb.ids" esc = chr(27) norm = esc + "[0;0m" bold = esc + "[0;1m" red = esc + "[0;31m" green= esc + "[0;32m" amber= esc + "[0;33m" cols = ("", "", "", "", "") def readattr(path, name): "Read attribute from sysfs and return as string" f = open(prefix + path + "/" + name); return f.readline().rstrip("\n"); def readlink(path, name): "Read symlink and return basename" return os.path.basename(os.readlink(prefix + path + "/" + name)); class UsbClass: "Container for USB Class/Subclass/Protocol" def __init__(self, cl, sc, pr, str = ""): self.pclass = cl self.subclass = sc self.proto = pr self.desc = str def __repr__(self): return self.desc def __cmp__(self, oth): # Works only on 64bit systems: #return self.pclass*0x10000+self.subclass*0x100+self.proto \ # - oth.pclass*0x10000-oth.subclass*0x100-oth.proto if self.pclass != oth.pclass: return self.pclass - oth.pclass if self.subclass != oth.subclass: return self.subclass - oth.subclass return self.proto - oth.proto class UsbVendor: "Container for USB Vendors" def __init__(self, vid, vname = ""): self.vid = vid self.vname = vname def __repr__(self): return self.vname def __cmp__(self, oth): return self.vid - oth.vid class UsbProduct: "Container for USB VID:PID devices" def __init__(self, vid, pid, pname = ""): self.vid = vid self.pid = pid self.pname = pname def __repr__(self): return self.pname def __cmp__(self, oth): # Works only on 64bit systems: # return self.vid*0x10000 + self.pid \ # - oth.vid*0x10000 - oth.pid if self.vid != oth.vid: return self.vid - oth.vid return self.pid - oth.pid usbvendors = [] usbproducts = [] usbclasses = [] def ishexdigit(str): "return True if all digits are valid hex digits" for dg in str: if not dg.isdigit() and not dg in 'abcdef': return False return True def parse_usb_ids(): "Parse /usr/share/usb.ids and fill usbvendors, usbproducts, usbclasses" id = 0 sid = 0 mode = 0 strg = "" cstrg = "" for ln in file(usbids, "r").readlines(): if ln[0] == '#': continue ln = ln.rstrip('\n') if len(ln) == 0: continue if ishexdigit(ln[0:4]): mode = 0 id = int(ln[:4], 16) usbvendors.append(UsbVendor(id, ln[6:])) continue if ln[0] == '\t' and ishexdigit(ln[1:3]): sid = int(ln[1:5], 16) # USB devices if mode == 0: usbproducts.append(UsbProduct(id, sid, ln[7:])) continue elif mode == 1: nm = ln[5:] if nm != "Unused": strg = cstrg + ":" + nm else: strg = cstrg + ":" usbclasses.append(UsbClass(id, sid, -1, strg)) continue if ln[0] == 'C': mode = 1 id = int(ln[2:4], 16) cstrg = ln[6:] usbclasses.append(UsbClass(id, -1, -1, cstrg)) continue if mode == 1 and ln[0] == '\t' and ln[1] == '\t' and ishexdigit(ln[2:4]): prid = int(ln[2:4], 16) usbclasses.append(UsbClass(id, sid, prid, strg + ":" + ln[6:])) continue mode = 2 def bin_search(first, last, item, list): "binary search on list, returns -1 on fail, match idx otherwise, recursive" #print "bin_search(%i,%i)" % (first, last) if first == last: return -1 if first == last-1: if item == list[first]: return first else: return -1 mid = (first+last) // 2 if item == list[mid]: return mid elif item < list[mid]: return bin_search(first, mid, item, list) else: return bin_search(mid, last, item, list) def find_usb_prod(vid, pid): "Return device name from USB Vendor:Product list" strg = "" dev = UsbVendor(vid, "") lnvend = len(usbvendors) ix = bin_search(0, lnvend, dev, usbvendors) if ix != -1: strg = usbvendors[ix].__repr__() else: return "" dev = UsbProduct(vid, pid, "") lnprod = len(usbproducts) ix = bin_search(0, lnprod, dev, usbproducts) if ix != -1: return strg + " " + usbproducts[ix].__repr__() return strg def find_usb_class(cid, sid, pid): "Return USB protocol from usbclasses list" if cid == 0xff and sid == 0xff and pid == 0xff: return "Vendor Specific" lnlst = len(usbclasses) dev = UsbClass(cid, sid, pid, "") ix = bin_search(0, lnlst, dev, usbclasses) if ix != -1: return usbclasses[ix].__repr__() dev = UsbClass(cid, sid, -1, "") ix = bin_search(0, lnlst, dev, usbclasses) if ix != -1: return usbclasses[ix].__repr__() dev = UsbClass(cid, -1, -1, "") ix = bin_search(0, lnlst, dev, usbclasses) if ix != -1: return usbclasses[ix].__repr__() return "" devlst = ( 'host', # usb-storage 'video4linux/video', # uvcvideo et al. 'sound/card', # snd-usb-audio 'net/', # cdc_ether, ... 'input/input', # usbhid 'usb:hiddev', # usb hid 'bluetooth/hci', # btusb 'ttyUSB', # btusb 'tty/', # cdc_acm 'usb:lp', # usblp #'usb/lp', # usblp 'usb/', # hiddev, usblp ) def find_storage(hostno): "Return SCSI block dev names for host" res = "" for ent in os.listdir("/sys/class/scsi_device/"): (host, bus, tgt, lun) = ent.split(":") if host == hostno: try: for ent2 in os.listdir("/sys/class/scsi_device/%s/device/block" % ent): res += ent2 + " " except: pass return res def find_dev(driver, usbname): "Return pseudo devname that's driven by driver" res = "" for nm in devlst: dir = prefix + usbname prep = "" #print nm idx = nm.find('/') if idx != -1: prep = nm[:idx+1] dir += "/" + nm[:idx] nm = nm[idx+1:] ln = len(nm) try: for ent in os.listdir(dir): if ent[:ln] == nm: res += prep+ent+" " if nm == "host": res += "(" + find_storage(ent[ln:])[:-1] + ")" except: pass return res class UsbInterface: "Container for USB interface info" def __init__(self, parent = None, level = 1): self.parent = parent self.level = level self.fname = "" self.iclass = 0 self.isclass = 0 self.iproto = 0 self.noep = 0 self.driver = "" self.devname = "" self.protoname = "" def read(self, fname): fullpath = "" if self.parent: fullpath += self.parent.fname + "/" fullpath += fname #self.fname = fullpath self.fname = fname self.iclass = int(readattr(fullpath, "bInterfaceClass"),16) self.isclass = int(readattr(fullpath, "bInterfaceSubClass"),16) self.iproto = int(readattr(fullpath, "bInterfaceProtocol"),16) self.noep = int(readattr(fullpath, "bNumEndpoints")) try: self.driver = readlink(fname, "driver") self.devname = find_dev(self.driver, fname) except: pass self.protoname = find_usb_class(self.iclass, self.isclass, self.iproto) def __str__(self): return "%-16s(IF) %02x:%02x:%02x %iEPs (%s) %s%s %s%s%s\n" % \ (" " * self.level+self.fname, self.iclass, self.isclass, self.iproto, self.noep, self.protoname, cols[3], self.driver, cols[4], self.devname, cols[0]) class UsbDevice: "Container for USB device info" def __init__(self, parent = None, level = 0): self.parent = parent self.level = level self.fname = "" self.iclass = 0 self.isclass = 0 self.iproto = 0 self.vid = 0 self.pid = 0 self.name = "" self.usbver = "" self.speed = "" self.maxpower = "" self.noports = 0 self.nointerfaces = 0 self.driver = "" self.devname = "" self.interfaces = [] self.children = [] def read(self, fname): self.fname = fname self.iclass = int(readattr(fname, "bDeviceClass"), 16) self.isclass = int(readattr(fname, "bDeviceSubClass"), 16) self.iproto = int(readattr(fname, "bDeviceProtocol"), 16) self.vid = int(readattr(fname, "idVendor"), 16) self.pid = int(readattr(fname, "idProduct"), 16) try: self.name = readattr(fname, "manufacturer") + " " \ + readattr(fname, "product") #self.name += " " + readattr(fname, "serial") if self.name[:5] == "Linux": rx = re.compile(r"Linux [^ ]* (.hci_hcd) .HCI Host Controller") mch = rx.match(self.name) if mch: self.name = mch.group(1) except: pass if not self.name: self.name = find_usb_prod(self.vid, self.pid) # Some USB Card readers have a better name then Generic ... if self.name[:7] == "Generic": oldnm = self.name self.name = find_usb_prod(self.vid, self.pid) if not self.name: self.name = oldnm try: ser = readattr(fname, "serial") # Some USB devs report "serial" as serial no. suppress if (ser and ser != "serial"): self.name += " " + ser except: pass self.usbver = readattr(fname, "version") self.speed = readattr(fname, "speed") self.maxpower = readattr(fname, "bMaxPower") self.noports = int(readattr(fname, "maxchild")) try: self.nointerfaces = int(readattr(fname, "bNumInterfaces")) except: #print "ERROR: %s/bNumInterfaces = %s" % (fname, # readattr(fname, "bNumInterfaces"))a self.nointerfaces = 0 try: self.driver = readlink(fname, "driver") self.devname = find_dev(self.driver, fname) except: pass def readchildren(self): if self.fname[0:3] == "usb": fname = self.fname[3:] else: fname = self.fname for dirent in os.listdir(prefix + self.fname): if not dirent[0:1].isdigit(): continue #print dirent if os.access(prefix + dirent + "/bInterfaceClass", os.R_OK): iface = UsbInterface(self, self.level+1) iface.read(dirent) self.interfaces.append(iface) else: usbdev = UsbDevice(self, self.level+1) usbdev.read(dirent) usbdev.readchildren() self.children.append(usbdev) def __str__(self): #str = " " * self.level + self.fname if self.iclass == 9: col = cols[2] if noemptyhub and len(self.children) == 0: return "" if nohub: str = "" else: col = cols[1] if not nohub or self.iclass != 9: str = "%-16s%s%04x:%04x%s %02x %s%5sMBit/s %s %iIFs (%s%s%s)" % \ (" " * self.level + self.fname, cols[1], self.vid, self.pid, cols[0], self.iclass, self.usbver, self.speed, self.maxpower, self.nointerfaces, col, self.name, cols[0]) #if self.driver != "usb": # str += " %s" % self.driver if self.iclass == 9 and not showhubint: str += " %shub%s\n" % (cols[2], cols[0]) else: str += "\n" if showint: for iface in self.interfaces: str += iface.__str__() for child in self.children: str += child.__str__() return str def deepcopy(lst): "Returns a deep copy from the list lst" copy = [] for item in lst: copy.append(item) return copy def display_diff(lst1, lst2, fmtstr, args): "Compare lists (same length!) and display differences" for idx in range(0, len(lst1)): if lst1[idx] != lst2[idx]: print "Warning: " + fmtstr % args(lst2[idx]) def fix_usbvend(): "Sort USB vendor list and (optionally) display diffs" if warnsort: oldusbvend = deepcopy(usbvendors) usbvendors.sort() if warnsort: display_diff(usbvendors, oldusbvend, "Unsorted Vendor ID %04x", lambda x: (x.vid,)) def fix_usbprod(): "Sort USB products list" if warnsort: oldusbprod = deepcopy(usbproducts) usbproducts.sort() if warnsort: display_diff(usbproducts, oldusbprod, "Unsorted Vendor:Product ID %04x:%04x", lambda x: (x.vid, x.pid)) def fix_usbclass(): "Sort USB class list" if warnsort: oldusbcls = deepcopy(usbclasses) usbclasses.sort() if warnsort: display_diff(usbclasses, oldusbcls, "Unsorted USB class %02x:%02x:%02x", lambda x: (x.pclass, x.subclass, x.proto)) def usage(): "Displays usage information" print "Usage: lsusb.py [options]" print "Options:" print " -h display this help" print " -i display interface information" print " -I display interface information, even for hubs" print " -u suppress empty hubs" print " -U suppress all hubs" print " -c use colors" print " -w display warning if usb.ids is not sorted correctly" print " -f FILE override filename for /usr/share/usb.ids" return 2 def read_usb(): "Read toplevel USB entries and print" for dirent in os.listdir(prefix): #print dirent, if not dirent[0:3] == "usb": continue usbdev = UsbDevice(None, 0) usbdev.read(dirent) usbdev.readchildren() os.write(sys.stdout.fileno(), usbdev.__str__()) def main(argv): "main entry point" global showint, showhubint, noemptyhub, nohub, warnsort, cols, usbids try: (optlist, args) = getopt.gnu_getopt(argv[1:], "hiIuUwcf:", ("help",)) except getopt.GetoptError, exc: print "Error:", exc sys.exit(usage()) for opt in optlist: if opt[0] == "-h" or opt[0] == "--help": usage() sys.exit(0) if opt[0] == "-i": showint = True continue if opt[0] == "-I": showint = True showhubint = True continue if opt[0] == "-u": noemptyhub = True continue if opt[0] == "-U": noemptyhub = True nohub = True continue if opt[0] == "-c": cols = (norm, bold, red, green, amber) continue if opt[0] == "-w": warnsort = True continue if opt[0] == "-f": usbids = opt[1] continue if len(args) > 0: print "Error: excess args %s ..." % args[0] sys.exit(usage()) try: parse_usb_ids() fix_usbvend() fix_usbprod() fix_usbclass() except: print >>sys.stderr, " WARNING: Failure to read usb.ids" print >>sys.stderr, sys.exc_info() read_usb() # Entry point if __name__ == "__main__": main(sys.argv)