kernel 2.6.15-12 and /proc/bus/usb/devices

[Loic Pefferkorn]

Hello,

Using strace lsusb seems to gather data from /dev/usb:

$strace -e trace=open lsusb
open("/etc/ld.so.cache", O_RDONLY)      = 3
open("/lib/libusb-0.1.so.4", O_RDONLY)  = 3
open("/lib/tls/i686/cmov/libc.so.6", O_RDONLY) = 3
open("./usb.ids", O_RDONLY)             = -1 ENOENT (No such file or 
directory)
open("/var/lib/misc/usb.ids", O_RDONLY) = 3
open("/dev/bus/usb", O_RDONLY|O_NONBLOCK|O_LARGEFILE|O_DIRECTORY) = 3
open("/dev/bus/usb", O_RDONLY|O_NONBLOCK|O_LARGEFILE|O_DIRECTORY) = 3
open("/dev/bus/usb/005", O_RDONLY|O_NONBLOCK|O_LARGEFILE|O_DIRECTORY) = 3
open("/dev/bus/usb/005/001", O_RDWR)    = 4
open("/dev/bus/usb/005/001", O_RDWR)    = 3
open("/dev/bus/usb/001", O_RDONLY|O_NONBLOCK|O_LARGEFILE|O_DIRECTORY) = 3
open("/dev/bus/usb/001/001", O_RDWR)    = 4
open("/dev/bus/usb/001/001", O_RDWR)    = 3
(...)


Cheers,
Loic


Le Dimanche 15 Janvier 2006 10:56, Joao Pedro Clemente a écrit :
> Hi people.
> I upgraded to the lastest kernel (2.6.15-12) and now I'm missing
> /prob/bus/usb/devices, altough I can get a lsusb listing.....
> I am wondering how can this be (where is lsusb getting its data?!?) , and
> if it could be considered a bug or not, since it breaks applications that
> were expecting /proc/bus/usb/devices to exist.