☰

通过 udev 的 /dev/ttyUSB* 上的符号链接

tag-icon • tag-icon debian udev
通过 udev 的 /dev/ttyUSB* 上的符号链接

所以我用 PC-Engines ALIX.2D13、华为 E220 umts 调制解调器、Debian Wheezy 和 gammu-smsd 构建了一个漂亮的小型 GSM 网关。我需要一个固定的设备名称 gammu-smsd 才能在重新启动后继续存在。我尝试制定以下 udev 规则，但我不知道为什么它不起作用。

SUBSYSTEM=="tty", ATTRS{idVendor}=="12d1", ATTRS{idProduct}=="1003", ATTRS{bInterfaceNumber}=="00", SYMLINK+="gsm0"
SUBSYSTEM=="tty", ATTRS{idVendor}=="12d1", ATTRS{idProduct}=="1003", ATTRS{bInterfaceNumber}=="01", SYMLINK+="gsm1"

我的 udevadm 输出如下：

root@ko-smsgw-01:~# udevadm info -a -n /dev/ttyUSB0

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/pci0000:00/0000:00:0f.4/usb2/2-1/2-1:1.0/ttyUSB0/tty/ttyUSB0':
    KERNEL=="ttyUSB0"
    SUBSYSTEM=="tty"
    DRIVER==""

  looking at parent device '/devices/pci0000:00/0000:00:0f.4/usb2/2-1/2-1:1.0/ttyUSB0':
    KERNELS=="ttyUSB0"
    SUBSYSTEMS=="usb-serial"
    DRIVERS=="option1"
    ATTRS{port_number}=="0"

  looking at parent device '/devices/pci0000:00/0000:00:0f.4/usb2/2-1/2-1:1.0':
    KERNELS=="2-1:1.0"
    SUBSYSTEMS=="usb"
    DRIVERS=="option"
    ATTRS{bInterfaceNumber}=="00"
    ATTRS{bAlternateSetting}==" 0"
    ATTRS{bNumEndpoints}=="03"
    ATTRS{bInterfaceClass}=="ff"
    ATTRS{bInterfaceSubClass}=="ff"
    ATTRS{bInterfaceProtocol}=="ff"
    ATTRS{supports_autosuspend}=="1"
    ATTRS{interface}=="Data Interface"

  looking at parent device '/devices/pci0000:00/0000:00:0f.4/usb2/2-1':
    KERNELS=="2-1"
    SUBSYSTEMS=="usb"
    DRIVERS=="usb"
    ATTRS{configuration}==""
    ATTRS{bNumInterfaces}==" 3"
    ATTRS{bConfigurationValue}=="1"
    ATTRS{bmAttributes}=="a0"
    ATTRS{bMaxPower}=="500mA"
    ATTRS{urbnum}=="1126"
    ATTRS{idVendor}=="12d1"
    ATTRS{idProduct}=="1003"
    ATTRS{bcdDevice}=="0000"
    ATTRS{bDeviceClass}=="00"
    ATTRS{bDeviceSubClass}=="00"
    ATTRS{bDeviceProtocol}=="00"
    ATTRS{bNumConfigurations}=="1"
    ATTRS{bMaxPacketSize0}=="64"
    ATTRS{speed}=="12"
    ATTRS{busnum}=="2"
    ATTRS{devnum}=="7"
    ATTRS{devpath}=="1"
    ATTRS{version}==" 1.10"
    ATTRS{maxchild}=="0"
    ATTRS{quirks}=="0x0"
    ATTRS{avoid_reset_quirk}=="0"
    ATTRS{authorized}=="1"
    ATTRS{manufacturer}=="HUAWEI Technologies"
    ATTRS{product}=="HUAWEI Mobile"

  looking at parent device '/devices/pci0000:00/0000:00:0f.4/usb2':
    KERNELS=="usb2"
    SUBSYSTEMS=="usb"
    DRIVERS=="usb"
    ATTRS{configuration}==""
    ATTRS{bNumInterfaces}==" 1"
    ATTRS{bConfigurationValue}=="1"
    ATTRS{bmAttributes}=="e0"
    ATTRS{bMaxPower}=="  0mA"
    ATTRS{urbnum}=="180"
    ATTRS{idVendor}=="1d6b"
    ATTRS{idProduct}=="0001"
    ATTRS{bcdDevice}=="0302"
    ATTRS{bDeviceClass}=="09"
    ATTRS{bDeviceSubClass}=="00"
    ATTRS{bDeviceProtocol}=="00"
    ATTRS{bNumConfigurations}=="1"
    ATTRS{bMaxPacketSize0}=="64"
    ATTRS{speed}=="12"
    ATTRS{busnum}=="2"
    ATTRS{devnum}=="1"
    ATTRS{devpath}=="0"
    ATTRS{version}==" 1.10"
    ATTRS{maxchild}=="4"
    ATTRS{quirks}=="0x0"
    ATTRS{avoid_reset_quirk}=="0"
    ATTRS{authorized}=="1"
    ATTRS{manufacturer}=="Linux 3.2.0-4-486 ohci_hcd"
    ATTRS{product}=="OHCI Host Controller"
    ATTRS{serial}=="0000:00:0f.4"
    ATTRS{authorized_default}=="1"

  looking at parent device '/devices/pci0000:00/0000:00:0f.4':
    KERNELS=="0000:00:0f.4"
    SUBSYSTEMS=="pci"
    DRIVERS=="ohci_hcd"
    ATTRS{vendor}=="0x1022"
    ATTRS{device}=="0x2094"
    ATTRS{subsystem_vendor}=="0x1022"
    ATTRS{subsystem_device}=="0x2094"
    ATTRS{class}=="0x0c0310"
    ATTRS{irq}=="12"
    ATTRS{local_cpus}=="1"
    ATTRS{local_cpulist}=="0"
    ATTRS{dma_mask_bits}=="32"
    ATTRS{consistent_dma_mask_bits}=="32"
    ATTRS{enable}=="1"
    ATTRS{broken_parity_status}=="0"
    ATTRS{msi_bus}==""

  looking at parent device '/devices/pci0000:00':
    KERNELS=="pci0000:00"
    SUBSYSTEMS==""
    DRIVERS==""

答案1

看一下这个，http://reactivated.net/writing_udev_rules.html#udevinfo

虽然将相关设备和单个父设备的属性组合起来是合法的，但您不能混合匹配多个父设备的属性 - 您的规则将不起作用

根据您的示例，您在每个规则中引用了 2 个父设备，这是错误的。

  1. ATTRS{bInterfaceNumber}==“00”

  2. ATTRS{idVendor}==“12d1”，ATTRS{idProduct}==“1003”

相关内容