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- root@ubuntu:~# lsusb
- Bus 001 Device 002: ID 090c:1000 Silicon Motion, Inc. - Taiwan (formerly Feiya Technology Corp.) Flash Drive
- Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
- Bus 002 Device 003: ID 0e0f:0002 VMware, Inc. Virtual USB Hub
- Bus 002 Device 002: ID 0e0f:0003 VMware, Inc. Virtual Mouse
- Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
- root@ubuntu:~# udevadm info -a -p $(udevadm info -q path -n /dev/bus/usb/001/002)
- 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/pci0000:00/0000:00:11.0/0000:02:03.0/usb1/1-1':
- KERNEL=="1-1"
- SUBSYSTEM=="usb"
- DRIVER=="usb"
- ATTR{bcdDevice}=="1100"
- ATTR{bDeviceSubClass}=="00"
- ATTR{idVendor}=="090c"
- ATTR{rx_lanes}=="1"
- ATTR{bNumInterfaces}==" 1"
- ATTR{bConfigurationValue}=="1"
- ATTR{urbnum}=="14099"
- ATTR{maxchild}=="0"
- ATTR{bMaxPacketSize0}=="64"
- ATTR{bmAttributes}=="80"
- ATTR{devnum}=="2"
- ATTR{serial}=="AA04012700012659"
- ATTR{quirks}=="0x0"
- ATTR{tx_lanes}=="1"
- ATTR{bDeviceClass}=="00"
- ATTR{idProduct}=="1000"
- ATTR{version}==" 2.00"
- ATTR{devpath}=="1"
- ATTR{removable}=="unknown"
- ATTR{configuration}==""
- ATTR{busnum}=="1"
- ATTR{speed}=="480"
- ATTR{bMaxPower}=="100mA"
- ATTR{ltm_capable}=="no"
- ATTR{authorized}=="1"
- ATTR{bNumConfigurations}=="1"
- ATTR{avoid_reset_quirk}=="0"
- ATTR{bDeviceProtocol}=="00"
- looking at parent device '//devices/pci0000:00/0000:00:11.0/0000:02:03.0/usb1':
- KERNELS=="usb1"
- SUBSYSTEMS=="usb"
- DRIVERS=="usb"
- ATTRS{ltm_capable}=="no"
- ATTRS{product}=="EHCI Host Controller"
- ATTRS{maxchild}=="6"
- ATTRS{version}==" 2.00"
- ATTRS{rx_lanes}=="1"
- ATTRS{authorized_default}=="1"
- ATTRS{tx_lanes}=="1"
- ATTRS{busnum}=="1"
- ATTRS{devnum}=="1"
- ATTRS{devpath}=="0"
- ATTRS{configuration}==""
- ATTRS{speed}=="480"
- ATTRS{removable}=="unknown"
- ATTRS{bDeviceProtocol}=="00"
- ATTRS{bcdDevice}=="0500"
- ATTRS{quirks}=="0x0"
- ATTRS{bNumInterfaces}==" 1"
- ATTRS{idProduct}=="0002"
- ATTRS{bNumConfigurations}=="1"
- ATTRS{urbnum}=="41"
- ATTRS{bMaxPacketSize0}=="64"
- ATTRS{serial}=="0000:02:03.0"
- ATTRS{idVendor}=="1d6b"
- ATTRS{bmAttributes}=="e0"
- ATTRS{interface_authorized_default}=="1"
- ATTRS{authorized}=="1"
- ATTRS{bDeviceClass}=="09"
- ATTRS{bDeviceSubClass}=="00"
- ATTRS{bConfigurationValue}=="1"
- ATTRS{bMaxPower}=="0mA"
- ATTRS{avoid_reset_quirk}=="0"
- ATTRS{manufacturer}=="Linux 5.0.0-20-generic ehci_hcd"
- looking at parent device '//devices/pci0000:00/0000:00:11.0/0000:02:03.0':
- KERNELS=="0000:02:03.0"
- SUBSYSTEMS=="pci"
- DRIVERS=="ehci-pci"
- ATTRS{local_cpulist}=="0-3"
- ATTRS{class}=="0x0c0320"
- ATTRS{driver_override}=="(null)"
- ATTRS{acpi_index}=="16777752"
- ATTRS{local_cpus}=="00000000,00000000,00000000,0000000f"
- ATTRS{uframe_periodic_max}=="100"
- ATTRS{consistent_dma_mask_bits}=="32"
- ATTRS{numa_node}=="-1"
- ATTRS{label}=="ehci"
- ATTRS{broken_parity_status}=="0"
- ATTRS{ari_enabled}=="0"
- ATTRS{d3cold_allowed}=="0"
- ATTRS{msi_bus}=="1"
- ATTRS{irq}=="17"
- ATTRS{companion}==""
- ATTRS{device}=="0x0770"
- ATTRS{enable}=="1"
- ATTRS{subsystem_vendor}=="0x15ad"
- ATTRS{vendor}=="0x15ad"
- ATTRS{dma_mask_bits}=="32"
- ATTRS{revision}=="0x00"
- ATTRS{subsystem_device}=="0x0770"
- looking at parent device '//devices/pci0000:00/0000:00:11.0':
- KERNELS=="0000:00:11.0"
- SUBSYSTEMS=="pci"
- DRIVERS==""
- ATTRS{local_cpus}=="00000000,00000000,00000000,0000000f"
- ATTRS{device}=="0x0790"
- ATTRS{numa_node}=="-1"
- ATTRS{revision}=="0x02"
- ATTRS{d3cold_allowed}=="0"
- ATTRS{dma_mask_bits}=="32"
- ATTRS{msi_bus}=="1"
- ATTRS{vendor}=="0x15ad"
- ATTRS{enable}=="1"
- ATTRS{subsystem_device}=="0x0790"
- ATTRS{consistent_dma_mask_bits}=="32"
- ATTRS{broken_parity_status}=="0"
- ATTRS{subsystem_vendor}=="0x15ad"
- ATTRS{irq}=="0"
- ATTRS{ari_enabled}=="0"
- ATTRS{subordinate_bus_number}=="2"
- ATTRS{local_cpulist}=="0-3"
- ATTRS{driver_override}=="(null)"
- ATTRS{class}=="0x060401"
- ATTRS{secondary_bus_number}=="2"
- looking at parent device '//devices/pci0000:00':
- KERNELS=="pci0000:00"
- SUBSYSTEMS==""
- DRIVERS==""
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