On 09/10/2012 02:17 PM, kirimaks wrote: > Hello, all > > > I have a problem accessing my usb SMARGO smart reader from container. > Accessing it from the host system is all fine. > The access is done through libusb-1.0.9 and the OS is gentoo. > > > I managed to trace the problem down to the open() system call in > libusb which opens the device in question. It returns -1 in container > and sets errno to 1 (EPERM). I got stuck here because 'man open' does > not provide any clues (at least for me). It says: > > ... > EPERM The O_NOATIME flag was specified, but the effective user ID of > the caller did not match the owner of the file and the caller was not > privileged (CAP_FOWNER). > ... > > and the system call is: > > ... > hpriv->fd = open(filename, O_RDWR); > ... > > > The device can be seen under container (/dev/bus/usb/005/002) : > > oscam oscam-svn # ls -l /dev/bus/usb/005/ > total 0 > crw-rw-r-- 1 root usb 189, 512 Sep 10 09:54 001 > crw-rw-r-- 1 root usb 189, 513 Sep 10 12:21 002 > oscam oscam-svn # lsusb > Bus 005 Device 002: ID 0403:6001 Future Technology Devices > International, Ltd FT232 USB-Serial (UART) IC > Bus 008 Device 002: ID 046e:5577 Behavior Tech. Computer Corp. > Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub > Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub > Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub > Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub > Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub > Bus 006 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub > Bus 007 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub > Bus 008 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub > > > Log from oscam (insignificant, since the problem is somewhere between > libusb and underlying container): > > libusb_open unknown error : -1 > 2012/09/10 13:29:06 904EB18 r Smartreader device 005:002 not found > 2012/09/10 13:29:06 904EB18 r card [smartreader] Cannot open device: > 005:002 > 2012/09/10 13:30:06 904EB18 r card [smartreader] Using 0x82 as > endpoint for smartreader hardware detection > 2012/09/10 13:30:06 904EB18 r coulnd't open device 005:002 > > > Container configuration in host OS: > > lxc.arch = i686 > lxc.utsname = oscam > lxc.network.type = veth > lxc.network.flags = up > lxc.network.link = br0 > lxc.rootfs = /var/containers/oscam/oscam > lxc.tty = 1 > lxc.pts= 128 > lxc.cap.drop = sys_module mknod mac_override sys_boot > lxc.cgroup.devices.deny = a > lxc.cgroup.devices.allow = c 1:3 rw > lxc.cgroup.devices.allow = c 1:5 rw > lxc.cgroup.devices.allow = c 1:9 rw > lxc.cgroup.devices.allow = c 1:8 r > lxc.cgroup.devices.allow = c 136:* rw > lxc.cgroup.devices.allow = c 5:2 rw > lxc.cgroup.devices.allow = c 4:1 rwm > lxc.cgroup.devices.allow = c 4:0 rwm > lxc.cgroup.devices.allow = c 5:0 rwm > lxc.cgroup.devices.allow = c 5:1 rwm > lxc.cgroup.devices.allow = c 10:200 rwm > > Once again, everything works just fine in host OS. > > What am I missing? > > > Regards, > > Kirimaks >
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