这是我的 udev 规则
SUBSYSTEM=="usb", ATTRS{idVendor}=="10c4", ATTRS{idProduct}=="ea71", ATTRS{serial}=="0", ATTRS{bInterfaceNumber}=="00",RUN+="/home/jamal/test.sh"
当我添加 bInterfaceNumber 比较时,脚本未运行,当我删除它时,该脚本有效。
这是 udevadm info -a -n /dev/ttyUSB0 的输出
looking at device '/devices/pci0000:00/0000:00:11.0/0000:02:00.0/usb2/2-2/2-2.3/2-2.3:1.0/ttyUSB0/tty/ttyUSB0':
KERNEL=="ttyUSB0"
SUBSYSTEM=="tty"
DRIVER==""
looking at parent device '/devices/pci0000:00/0000:00:11.0/0000:02:00.0/usb2/2-2/2-2.3/2-2.3:1.0/ttyUSB0':
KERNELS=="ttyUSB0"
SUBSYSTEMS=="usb-serial"
DRIVERS=="cp210x"
ATTRS{port_number}=="0"
looking at parent device '/devices/pci0000:00/0000:00:11.0/0000:02:00.0/usb2/2-2/2-2.3/2-2.3:1.0':
KERNELS=="2-2.3:1.0"
SUBSYSTEMS=="usb"
DRIVERS=="cp2108"
ATTRS{bInterfaceClass}=="ff"
ATTRS{bInterfaceSubClass}=="00"
ATTRS{bInterfaceProtocol}=="00"
ATTRS{bNumEndpoints}=="02"
ATTRS{authorized}=="1"
ATTRS{supports_autosuspend}=="1"
ATTRS{bAlternateSetting}==" 0"
**ATTRS{bInterfaceNumber}=="00"**
ATTRS{interface}=="CP2108 Interface 0"
looking at parent device '/devices/pci0000:00/0000:00:11.0/0000:02:00.0/usb2/2-2/2-2.3':
KERNELS=="2-2.3"
SUBSYSTEMS=="usb"
DRIVERS=="usb"
ATTRS{bDeviceSubClass}=="00"
ATTRS{bDeviceProtocol}=="00"
ATTRS{devpath}=="2.3"
ATTRS{idVendor}=="10c4"
ATTRS{speed}=="12"
ATTRS{bNumInterfaces}==" 4"
ATTRS{bConfigurationValue}=="1"
ATTRS{bMaxPacketSize0}=="64"
ATTRS{busnum}=="2"
ATTRS{devnum}=="57"
ATTRS{configuration}==""
ATTRS{bMaxPower}=="100mA"
ATTRS{authorized}=="1"
ATTRS{bmAttributes}=="80"
ATTRS{bNumConfigurations}=="1"
ATTRS{maxchild}=="0"
ATTRS{bcdDevice}=="0004"
ATTRS{avoid_reset_quirk}=="0"
ATTRS{quirks}=="0x0"
ATTRS{serial}=="0"
ATTRS{version}==" 2.00"
ATTRS{urbnum}=="213"
ATTRS{ltm_capable}=="no"
ATTRS{manufacturer}=="Silicon Labs"
ATTRS{removable}=="unknown"
ATTRS{idProduct}=="ea71"
ATTRS{bDeviceClass}=="00"
ATTRS{product}=="CP2108 Quad USB to UART Bridge Controller"
looking at parent device '/devices/pci0000:00/0000:00:11.0/0000:02:00.0/usb2/2-2':
KERNELS=="2-2"
SUBSYSTEMS=="usb"
DRIVERS=="usb"
ATTRS{bDeviceSubClass}=="00"
ATTRS{bDeviceProtocol}=="00"
ATTRS{devpath}=="2"
ATTRS{idVendor}=="0e0f"
ATTRS{speed}=="12"
ATTRS{bNumInterfaces}==" 1"
ATTRS{bConfigurationValue}=="1"
ATTRS{bMaxPacketSize0}=="8"
ATTRS{busnum}=="2"
ATTRS{devnum}=="3"
ATTRS{configuration}=="VMware Virtual USB Hub"
ATTRS{bMaxPower}=="0mA"
ATTRS{authorized}=="1"
ATTRS{bmAttributes}=="e0"
ATTRS{bNumConfigurations}=="1"
ATTRS{maxchild}=="7"
ATTRS{bcdDevice}=="0100"
ATTRS{avoid_reset_quirk}=="0"
ATTRS{quirks}=="0x0"
ATTRS{version}==" 1.10"
ATTRS{urbnum}=="1215"
ATTRS{ltm_capable}=="no"
ATTRS{removable}=="unknown"
ATTRS{idProduct}=="0002"
ATTRS{bDeviceClass}=="09"
ATTRS{product}=="VMware Virtual USB Hub"
looking at parent device '/devices/pci0000:00/0000:00:11.0/0000:02:00.0/usb2':
KERNELS=="usb2"
SUBSYSTEMS=="usb"
DRIVERS=="usb"
ATTRS{bDeviceSubClass}=="00"
ATTRS{bDeviceProtocol}=="00"
ATTRS{devpath}=="0"
ATTRS{idVendor}=="1d6b"
ATTRS{speed}=="12"
ATTRS{bNumInterfaces}==" 1"
ATTRS{bConfigurationValue}=="1"
ATTRS{bMaxPacketSize0}=="64"
ATTRS{authorized_default}=="1"
ATTRS{busnum}=="2"
ATTRS{devnum}=="1"
ATTRS{configuration}==""
ATTRS{bMaxPower}=="0mA"
ATTRS{authorized}=="1"
ATTRS{bmAttributes}=="e0"
ATTRS{bNumConfigurations}=="1"
ATTRS{maxchild}=="2"
ATTRS{interface_authorized_default}=="1"
ATTRS{bcdDevice}=="0404"
ATTRS{avoid_reset_quirk}=="0"
ATTRS{quirks}=="0x0"
ATTRS{serial}=="0000:02:00.0"
ATTRS{version}==" 1.10"
ATTRS{urbnum}=="32"
ATTRS{ltm_capable}=="no"
ATTRS{manufacturer}=="Linux 4.4.0-31-generic uhci_hcd"
ATTRS{removable}=="unknown"
ATTRS{idProduct}=="0001"
ATTRS{bDeviceClass}=="09"
ATTRS{product}=="UHCI Host Controller"
looking at parent device '/devices/pci0000:00/0000:00:11.0/0000:02:00.0':
KERNELS=="0000:02:00.0"
SUBSYSTEMS=="pci"
DRIVERS=="uhci_hcd"
ATTRS{irq}=="18"
ATTRS{subsystem_vendor}=="0x15ad"
ATTRS{broken_parity_status}=="0"
ATTRS{class}=="0x0c0300"
ATTRS{driver_override}=="(null)"
ATTRS{consistent_dma_mask_bits}=="32"
ATTRS{dma_mask_bits}=="32"
ATTRS{local_cpus}=="0000000f"
ATTRS{device}=="0x0774"
ATTRS{enable}=="1"
ATTRS{msi_bus}=="1"
ATTRS{local_cpulist}=="0-3"
ATTRS{vendor}=="0x15ad"
ATTRS{subsystem_device}=="0x1976"
ATTRS{numa_node}=="-1"
ATTRS{d3cold_allowed}=="0"
looking at parent device '/devices/pci0000:00/0000:00:11.0':
KERNELS=="0000:00:11.0"
SUBSYSTEMS=="pci"
DRIVERS==""
ATTRS{irq}=="0"
ATTRS{subsystem_vendor}=="0x15ad"
ATTRS{broken_parity_status}=="0"
ATTRS{class}=="0x060401"
ATTRS{driver_override}=="(null)"
ATTRS{consistent_dma_mask_bits}=="32"
ATTRS{dma_mask_bits}=="32"
ATTRS{local_cpus}=="0000000f"
ATTRS{device}=="0x0790"
ATTRS{enable}=="1"
ATTRS{msi_bus}=="1"
ATTRS{local_cpulist}=="0-3"
ATTRS{vendor}=="0x15ad"
ATTRS{subsystem_device}=="0x0790"
ATTRS{numa_node}=="-1"
ATTRS{d3cold_allowed}=="0"
looking at parent device '/devices/pci0000:00':
KERNELS=="pci0000:00"
SUBSYSTEMS==""
DRIVERS==""
您可以观察到 bInterfaceNumber 为“00”。你能告诉我我犯了什么错误吗?
感谢您的时间和精力。
答案1
问题在于其他属性位于设备级别(idVendor、idProduct、serial),而 bInterfaceNumber 位于接口级别。所以不存在同时匹配所有条件的 udev 条目。