Hello,
I am trying to write a udev configuration file to change the group
ownership of the device if the device contains a CCID interface
(bInterfaceClass = 11 or 0x0B).
I would like to use something like:
ATTR{bInterfaceClass}=="0b", GROUP="pcscd"
but that does not work.
I also tried ATTRS instead of ATTR
ATTRS{bInterfaceClass}=="0b", GROUP="pcscd"
but it does not work either.
One solution I found to work is:
ATTRS{bInterfaceClass}=="0b", RUN+="/bin/chgrp pcscd $root/$parent"
It looks like the problem is that my rule matches on an attribute of
an interface instead of an attribute of the device.
Is it possible/supported to use GROUP= in my case?
Thanks
Some more info:
Debian testing/squeeze system
kernel 2.6.34-1-686
udev 160-1
$ udevadm monitor --env --kernel --udev
KERNEL[1284023092.630235] add
/devices/pci0000:00/0000:00:1d.1/usb3/3-1/3-1.1 (usb)
UDEV_LOG=3
ACTION=add
DEVPATH=/devices/pci0000:00/0000:00:1d.1/usb3/3-1/3-1.1
SUBSYSTEM=usb
DEVNAME=bus/usb/003/035
DEVTYPE=usb_device
DEVICE=/proc/bus/usb/003/035
PRODUCT=8e6/3437/100
TYPE=0/0/0
BUSNUM=003
DEVNUM=035
SEQNUM=1538
MAJOR=189
MINOR=290
KERNEL[1284023092.633197] add
/devices/pci0000:00/0000:00:1d.1/usb3/3-1/3-1.1/3-1.1:1.0 (usb)
UDEV_LOG=3
ACTION=add
DEVPATH=/devices/pci0000:00/0000:00:1d.1/usb3/3-1/3-1.1/3-1.1:1.0
SUBSYSTEM=usb
DEVTYPE=usb_interface
DEVICE=/proc/bus/usb/003/035
PRODUCT=8e6/3437/100
TYPE=0/0/0
INTERFACE=11/0/0
MODALIAS=usb:v08E6p3437d0100dc00dsc00dp00ic0Bisc00ip00
SEQNUM=1539
UDEV [1284023092.642405] add
/devices/pci0000:00/0000:00:1d.1/usb3/3-1/3-1.1 (usb)
UDEV_LOG=3
ACTION=add
DEVPATH=/devices/pci0000:00/0000:00:1d.1/usb3/3-1/3-1.1
SUBSYSTEM=usb
DEVNAME=/dev/bus/usb/003/035
DEVTYPE=usb_device
DEVICE=/proc/bus/usb/003/035
PRODUCT=8e6/3437/100
TYPE=0/0/0
BUSNUM=003
DEVNUM=035
SEQNUM=1538
ID_VENDOR=Gemplus
ID_VENDOR_ENC=Gemplus
ID_VENDOR_ID=08e6
ID_MODEL=USB_SmartCard_Reader
ID_MODEL_ENC=USB\x20SmartCard\x20Reader
ID_MODEL_ID=3437
ID_REVISION=0100
ID_SERIAL=Gemplus_USB_SmartCard_Reader
ID_BUS=usb
ID_USB_INTERFACES=:0b0000:
MAJOR=189
MINOR=290
DEVLINKS=/dev/char/189:290
UDEV [1284023092.663831] add
/devices/pci0000:00/0000:00:1d.1/usb3/3-1/3-1.1/3-1.1:1.0 (usb)
UDEV_LOG=3
ACTION=add
DEVPATH=/devices/pci0000:00/0000:00:1d.1/usb3/3-1/3-1.1/3-1.1:1.0
SUBSYSTEM=usb
DEVTYPE=usb_interface
DEVICE=/proc/bus/usb/003/035
PRODUCT=8e6/3437/100
TYPE=0/0/0
INTERFACE=11/0/0
MODALIAS=usb:v08E6p3437d0100dc00dsc00dp00ic0Bisc00ip00
SEQNUM=1539
$ udevadm info --path /devices/pci0000:00/0000:00:1d.1/usb3/3-1 --attribute-walk
Udevadm info starts with the device specified by the devpath and then
walks up the chain of parent devices. It prints for every device
found, all possible attributes in the udev rules key format.
A rule to match, can be composed by the attributes of the device
and the attributes from one single parent device.
looking at device '/devices/pci0000:00/0000:00:1d.1/usb3/3-1':
KERNEL=="3-1"
SUBSYSTEM=="usb"
DRIVER=="usb"
ATTR{configuration}==""
ATTR{bNumInterfaces}==" 1"
ATTR{bConfigurationValue}=="1"
ATTR{bmAttributes}=="e0"
ATTR{bMaxPower}=="100mA"
ATTR{urbnum}=="756"
ATTR{idVendor}=="04cc"
ATTR{idProduct}=="1122"
ATTR{bcdDevice}=="0110"
ATTR{bDeviceClass}=="09"
ATTR{bDeviceSubClass}=="00"
ATTR{bDeviceProtocol}=="00"
ATTR{bNumConfigurations}=="1"
ATTR{bMaxPacketSize0}=="64"
ATTR{speed}=="12"
ATTR{busnum}=="3"
ATTR{devnum}=="2"
ATTR{devpath}=="1"
ATTR{version}==" 1.10"
ATTR{maxchild}=="5"
ATTR{quirks}=="0x0"
ATTR{avoid_reset_quirk}=="0"
ATTR{authorized}=="1"
looking at parent device '/devices/pci0000:00/0000:00:1d.1/usb3':
KERNELS=="usb3"
SUBSYSTEMS=="usb"
DRIVERS=="usb"
ATTRS{configuration}==""
ATTRS{bNumInterfaces}==" 1"
ATTRS{bConfigurationValue}=="1"
ATTRS{bmAttributes}=="e0"
ATTRS{bMaxPower}==" 0mA"
ATTRS{urbnum}=="34"
ATTRS{idVendor}=="1d6b"
ATTRS{idProduct}=="0001"
ATTRS{bcdDevice}=="0206"
ATTRS{bDeviceClass}=="09"
ATTRS{bDeviceSubClass}=="00"
ATTRS{bDeviceProtocol}=="00"
ATTRS{bNumConfigurations}=="1"
ATTRS{bMaxPacketSize0}=="64"
ATTRS{speed}=="12"
ATTRS{busnum}=="3"
ATTRS{devnum}=="1"
ATTRS{devpath}=="0"
ATTRS{version}==" 1.10"
ATTRS{maxchild}=="2"
ATTRS{quirks}=="0x0"
ATTRS{avoid_reset_quirk}=="0"
ATTRS{authorized}=="1"
ATTRS{manufacturer}=="Linux 2.6.34-1-686 uhci_hcd"
ATTRS{product}=="UHCI Host Controller"
ATTRS{serial}=="0000:00:1d.1"
ATTRS{authorized_default}=="1"
looking at parent device '/devices/pci0000:00/0000:00:1d.1':
KERNELS=="0000:00:1d.1"
SUBSYSTEMS=="pci"
DRIVERS=="uhci_hcd"
ATTRS{vendor}=="0x8086"
ATTRS{device}=="0x27c9"
ATTRS{subsystem_vendor}=="0x1028"
ATTRS{subsystem_device}=="0x01ad"
ATTRS{class}=="0x0c0300"
ATTRS{irq}=="22"
ATTRS{local_cpus}=="ffffffff"
ATTRS{local_cpulist}=="0-31"
ATTRS{modalias}=="pci:v00008086d000027C9sv00001028sd000001ADbc0Csc03i00"
ATTRS{dma_mask_bits}=="32"
ATTRS{consistent_dma_mask_bits}=="32"
ATTRS{broken_parity_status}=="0"
ATTRS{msi_bus}==""
looking at parent device '/devices/pci0000:00':
KERNELS=="pci0000:00"
SUBSYSTEMS==""
DRIVERS==""
$ udevadm info --path
/devices/pci0000:00/0000:00:1d.1/usb3/3-1/3-1.1/3-1.1:1.0
--attribute-walk
Udevadm info starts with the device specified by the devpath and then
walks up the chain of parent devices. It prints for every device
found, all possible attributes in the udev rules key format.
A rule to match, can be composed by the attributes of the device
and the attributes from one single parent device.
looking at device '/devices/pci0000:00/0000:00:1d.1/usb3/3-1/3-1.1/3-1.1:1.0':
KERNEL=="3-1.1:1.0"
SUBSYSTEM=="usb"
DRIVER==""
ATTR{bInterfaceNumber}=="00"
ATTR{bAlternateSetting}==" 0"
ATTR{bNumEndpoints}=="03"
ATTR{bInterfaceClass}=="0b"
ATTR{bInterfaceSubClass}=="00"
ATTR{bInterfaceProtocol}=="00"
ATTR{modalias}=="usb:v08E6p3437d0100dc00dsc00dp00ic0Bisc00ip00"
ATTR{supports_autosuspend}=="1"
looking at parent device '/devices/pci0000:00/0000:00:1d.1/usb3/3-1/3-1.1':
KERNELS=="3-1.1"
SUBSYSTEMS=="usb"
DRIVERS=="usb"
ATTRS{configuration}==""
ATTRS{bNumInterfaces}==" 1"
ATTRS{bConfigurationValue}=="1"
ATTRS{bmAttributes}=="a0"
ATTRS{bMaxPower}=="200mA"
ATTRS{urbnum}=="9"
ATTRS{idVendor}=="08e6"
ATTRS{idProduct}=="3437"
ATTRS{bcdDevice}=="0100"
ATTRS{bDeviceClass}=="00"
ATTRS{bDeviceSubClass}=="00"
ATTRS{bDeviceProtocol}=="00"
ATTRS{bNumConfigurations}=="1"
ATTRS{bMaxPacketSize0}=="8"
ATTRS{speed}=="12"
ATTRS{busnum}=="3"
ATTRS{devnum}=="35"
ATTRS{devpath}=="1.1"
ATTRS{version}==" 1.10"
ATTRS{maxchild}=="0"
ATTRS{quirks}=="0x0"
ATTRS{avoid_reset_quirk}=="0"
ATTRS{authorized}=="1"
ATTRS{manufacturer}=="Gemplus"
ATTRS{product}=="USB SmartCard Reader"
looking at parent device '/devices/pci0000:00/0000:00:1d.1/usb3/3-1':
KERNELS=="3-1"
SUBSYSTEMS=="usb"
DRIVERS=="usb"
ATTRS{configuration}==""
ATTRS{bNumInterfaces}==" 1"
ATTRS{bConfigurationValue}=="1"
ATTRS{bmAttributes}=="e0"
ATTRS{bMaxPower}=="100mA"
ATTRS{urbnum}=="756"
ATTRS{idVendor}=="04cc"
ATTRS{idProduct}=="1122"
ATTRS{bcdDevice}=="0110"
ATTRS{bDeviceClass}=="09"
ATTRS{bDeviceSubClass}=="00"
ATTRS{bDeviceProtocol}=="00"
ATTRS{bNumConfigurations}=="1"
ATTRS{bMaxPacketSize0}=="64"
ATTRS{speed}=="12"
ATTRS{busnum}=="3"
ATTRS{devnum}=="2"
ATTRS{devpath}=="1"
ATTRS{version}==" 1.10"
ATTRS{maxchild}=="5"
ATTRS{quirks}=="0x0"
ATTRS{avoid_reset_quirk}=="0"
ATTRS{authorized}=="1"
looking at parent device '/devices/pci0000:00/0000:00:1d.1/usb3':
KERNELS=="usb3"
SUBSYSTEMS=="usb"
DRIVERS=="usb"
ATTRS{configuration}==""
ATTRS{bNumInterfaces}==" 1"
ATTRS{bConfigurationValue}=="1"
ATTRS{bmAttributes}=="e0"
ATTRS{bMaxPower}==" 0mA"
ATTRS{urbnum}=="34"
ATTRS{idVendor}=="1d6b"
ATTRS{idProduct}=="0001"
ATTRS{bcdDevice}=="0206"
ATTRS{bDeviceClass}=="09"
ATTRS{bDeviceSubClass}=="00"
ATTRS{bDeviceProtocol}=="00"
ATTRS{bNumConfigurations}=="1"
ATTRS{bMaxPacketSize0}=="64"
ATTRS{speed}=="12"
ATTRS{busnum}=="3"
ATTRS{devnum}=="1"
ATTRS{devpath}=="0"
ATTRS{version}==" 1.10"
ATTRS{maxchild}=="2"
ATTRS{quirks}=="0x0"
ATTRS{avoid_reset_quirk}=="0"
ATTRS{authorized}=="1"
ATTRS{manufacturer}=="Linux 2.6.34-1-686 uhci_hcd"
ATTRS{product}=="UHCI Host Controller"
ATTRS{serial}=="0000:00:1d.1"
ATTRS{authorized_default}=="1"
looking at parent device '/devices/pci0000:00/0000:00:1d.1':
KERNELS=="0000:00:1d.1"
SUBSYSTEMS=="pci"
DRIVERS=="uhci_hcd"
ATTRS{vendor}=="0x8086"
ATTRS{device}=="0x27c9"
ATTRS{subsystem_vendor}=="0x1028"
ATTRS{subsystem_device}=="0x01ad"
ATTRS{class}=="0x0c0300"
ATTRS{irq}=="22"
ATTRS{local_cpus}=="ffffffff"
ATTRS{local_cpulist}=="0-31"
ATTRS{modalias}=="pci:v00008086d000027C9sv00001028sd000001ADbc0Csc03i00"
ATTRS{dma_mask_bits}=="32"
ATTRS{consistent_dma_mask_bits}=="32"
ATTRS{broken_parity_status}=="0"
ATTRS{msi_bus}==""
looking at parent device '/devices/pci0000:00':
KERNELS=="pci0000:00"
SUBSYSTEMS==""
DRIVERS==""
--
Dr. Ludovic Rousseau
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