On Tue, 5 Aug 2008 00:28:29 +0200 Aurelien Jarno <[EMAIL PROTECTED]> wrote:
[...]
> So it seems it can't open the devices. The corresponding code in libusb
> is:
>
> fd = open(filename, O_RDWR);
> if (fd < 0) {
> fd = open(filename, O_RDONLY);
> if (fd < 0) {
> if (usb_debug >= 2)
> fprintf(stderr, "usb_os_find_devices: Couldn't open %s\n",
> filename);
>
> So either it is a bug in the kernel, either udev creates the wrong
> devices. Running "strace lsusb" will most probably give the answer.
strace shows
11584 fstat64(3, {st_mode=S_IFDIR|0755, st_size=180, ...}) = 0
11584 getdents(3, /* 9 entries */, 4096) = 144
11584 open("/dev/bus/usb/003/007", O_RDWR) = -1 ENOENT (No such file or
directory)
11584 open("/dev/bus/usb/003/007", O_RDONLY) = -1 ENOENT (No such file or
directory)
11584 open("/dev/bus/usb/003/006", O_RDWR) = -1 ENOENT (No such file or
directory)
11584 open("/dev/bus/usb/003/006", O_RDONLY) = -1 ENOENT (No such file or
directory)
but those files are there. (Strange thing: old files aren't deleted when
device is unplugged.)
[EMAIL PROTECTED]:~$ ls -l /dev/bus/usb/003/00*
crw-rw---- 1 root root 189, 0 2008-08-05 08:07 /dev/bus/usb/003/001
crw-rw-r-- 1 root scanner 189, 1 2008-08-04 18:33 /dev/bus/usb/003/002
crw-rw---- 1 root root 189, 2 2008-08-04 19:11 /dev/bus/usb/003/003
crw-rw---- 1 root root 189, 3 2008-08-04 19:11 /dev/bus/usb/003/004
crw-rw-r-- 1 root scanner 189, 4 2008-08-04 19:13 /dev/bus/usb/003/005
crw-rw---- 1 root root 189, 5 2008-08-04 23:55 /dev/bus/usb/003/006
crw-rw---- 1 root root 189, 6 2008-08-04 23:55 /dev/bus/usb/003/007
major 189 is USB, as shown from:
[EMAIL PROTECTED]:~$ grep 189 /proc/devices
189 usb_device
--
To UNSUBSCRIBE, email to [EMAIL PROTECTED]
with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
