Udev

udev

Использование подсистемы udev в Gentoo

Захотелось сделать как обычно - автомонтирование фотоаппарата. телефона и флешек, причем в разные mount point. Второе - пробрасывать определенные устройства внутрь виртуальных машин.

Общие правила

• Udev считывает файлы из /etc/udev/rules.d в алфавитном порядке.
• Найдя первое подходящее правило для устройства, udev прекращает дальнейший поиск.

Автомониирование

#udevadm info -a -p /devices/pci0000:00/0000:00:0b.1/usb2/2-3/2-3.4/2-3.4:1.0/host7/target7:0:0/7:0:0:0/block/sde

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/pci0000:00/0000:00:0b.1/usb2/2-3/2-3.4/2-3.4:1.0/host7/target7:0:0/7:0:0:0/block/sde':
    KERNEL=="sde"
    SUBSYSTEM=="block"
    DRIVER==""
    ATTR{range}=="16"
    ATTR{ext_range}=="256"
    ATTR{removable}=="1"
    ATTR{ro}=="0"
    ATTR{size}=="0"
    ATTR{alignment_offset}=="0"
    ATTR{discard_alignment}=="0"
    ATTR{capability}=="51"
    ATTR{stat}=="       0        0        0        0        0        0        0        0        0        0        0"
    ATTR{inflight}=="       0        0"

  looking at parent device '/devices/pci0000:00/0000:00:0b.1/usb2/2-3/2-3.4/2-3.4:1.0/host7/target7:0:0/7:0:0:0':
    KERNELS=="7:0:0:0"
    SUBSYSTEMS=="scsi"
    DRIVERS=="sd"
    ATTRS{device_blocked}=="0"
    ATTRS{type}=="0"
    ATTRS{scsi_level}=="0"
    ATTRS{vendor}=="Generic "
    ATTRS{model}=="STORAGE DEVICE  "
    ATTRS{rev}=="9144"
    ATTRS{state}=="running"
    ATTRS{timeout}=="30"
    ATTRS{iocounterbits}=="32"
    ATTRS{iorequest_cnt}=="0x105c33d"
    ATTRS{iodone_cnt}=="0x105c33d"
    ATTRS{ioerr_cnt}=="0x105c33c"
    ATTRS{modalias}=="scsi:t-0x00"
    ATTRS{evt_media_change}=="0"
    ATTRS{queue_depth}=="1"
    ATTRS{queue_type}=="none"
    ATTRS{max_sectors}=="240"

  looking at parent device '/devices/pci0000:00/0000:00:0b.1/usb2/2-3/2-3.4/2-3.4:1.0/host7/target7:0:0':
    KERNELS=="target7:0:0"
    SUBSYSTEMS=="scsi"
    DRIVERS==""

  looking at parent device '/devices/pci0000:00/0000:00:0b.1/usb2/2-3/2-3.4/2-3.4:1.0/host7':
    KERNELS=="host7"
    SUBSYSTEMS=="scsi"
    DRIVERS==""

  looking at parent device '/devices/pci0000:00/0000:00:0b.1/usb2/2-3/2-3.4/2-3.4:1.0':
    KERNELS=="2-3.4:1.0"
    SUBSYSTEMS=="usb"
    DRIVERS=="usb-storage"
    ATTRS{bInterfaceNumber}=="00"
    ATTRS{bAlternateSetting}==" 0"
    ATTRS{bNumEndpoints}=="02"
    ATTRS{bInterfaceClass}=="08"
    ATTRS{bInterfaceSubClass}=="06"
    ATTRS{bInterfaceProtocol}=="50"
    ATTRS{modalias}=="usb:v05E3p0710d9144dc00dsc00dp00ic08isc06ip50"
    ATTRS{supports_autosuspend}=="1"

  looking at parent device '/devices/pci0000:00/0000:00:0b.1/usb2/2-3/2-3.4':
    KERNELS=="2-3.4"
    SUBSYSTEMS=="usb"
    DRIVERS=="usb"
    ATTRS{configuration}==""
    ATTRS{bNumInterfaces}==" 1"
    ATTRS{bConfigurationValue}=="1"
    ATTRS{bmAttributes}=="80"
    ATTRS{bMaxPower}=="500mA"
    ATTRS{urbnum}=="85774393"
    ATTRS{idVendor}=="05e3"
    ATTRS{idProduct}=="0710"
    ATTRS{bcdDevice}=="9144"
    ATTRS{bDeviceClass}=="00"
    ATTRS{bDeviceSubClass}=="00"
    ATTRS{bDeviceProtocol}=="00"
    ATTRS{bNumConfigurations}=="1"
    ATTRS{bMaxPacketSize0}=="64"
    ATTRS{speed}=="480"
    ATTRS{busnum}=="2"
    ATTRS{devnum}=="4"
    ATTRS{devpath}=="3.4"
    ATTRS{version}==" 2.00"
    ATTRS{maxchild}=="0"
    ATTRS{quirks}=="0x0"
    ATTRS{avoid_reset_quirk}=="0"
    ATTRS{authorized}=="1"
    ATTRS{product}=="USB2.0 card Reader"
    ATTRS{serial}=="00014"

  looking at parent device '/devices/pci0000:00/0000:00:0b.1/usb2/2-3':
    KERNELS=="2-3"
    SUBSYSTEMS=="usb"
    DRIVERS=="usb"
    ATTRS{configuration}==""
    ATTRS{bNumInterfaces}==" 1"
    ATTRS{bConfigurationValue}=="1"
    ATTRS{bmAttributes}=="e0"
    ATTRS{bMaxPower}=="100mA"
    ATTRS{urbnum}=="480"
    ATTRS{idVendor}=="05e3"
    ATTRS{idProduct}=="0605"
    ATTRS{bcdDevice}=="060b"
    ATTRS{bDeviceClass}=="09"
    ATTRS{bDeviceSubClass}=="00"
    ATTRS{bDeviceProtocol}=="01"
    ATTRS{bNumConfigurations}=="1"
    ATTRS{bMaxPacketSize0}=="64"
    ATTRS{speed}=="480"
    ATTRS{busnum}=="2"
    ATTRS{devnum}=="2"
    ATTRS{devpath}=="3"
    ATTRS{version}==" 2.00"
    ATTRS{maxchild}=="4"
    ATTRS{quirks}=="0x0"
    ATTRS{avoid_reset_quirk}=="0"
    ATTRS{authorized}=="1"
    ATTRS{product}=="USB2.0 Hub"

  looking at parent device '/devices/pci0000:00/0000:00:0b.1/usb2':
    KERNELS=="usb2"
    SUBSYSTEMS=="usb"
    DRIVERS=="usb"
    ATTRS{configuration}==""
    ATTRS{bNumInterfaces}==" 1"
    ATTRS{bConfigurationValue}=="1"
    ATTRS{bmAttributes}=="e0"
    ATTRS{bMaxPower}=="  0mA"
    ATTRS{urbnum}=="36"
    ATTRS{idVendor}=="1d6b"
    ATTRS{idProduct}=="0002"
    ATTRS{bcdDevice}=="0206"
    ATTRS{bDeviceClass}=="09"
    ATTRS{bDeviceSubClass}=="00"
    ATTRS{bDeviceProtocol}=="00"
    ATTRS{bNumConfigurations}=="1"
    ATTRS{bMaxPacketSize0}=="64"
    ATTRS{speed}=="480"
    ATTRS{busnum}=="2"
    ATTRS{devnum}=="1"
    ATTRS{devpath}=="0"
    ATTRS{version}==" 2.00"
    ATTRS{maxchild}=="8"
    ATTRS{quirks}=="0x0"
    ATTRS{avoid_reset_quirk}=="0"
    ATTRS{authorized}=="1"
    ATTRS{manufacturer}=="Linux 2.6.37-rc6-sirmax1 ehci_hcd"
    ATTRS{product}=="EHCI Host Controller"
    ATTRS{serial}=="0000:00:0b.1"
    ATTRS{authorized_default}=="1"

  looking at parent device '/devices/pci0000:00/0000:00:0b.1':
    KERNELS=="0000:00:0b.1"
    SUBSYSTEMS=="pci"
    DRIVERS=="ehci_hcd"
    ATTRS{vendor}=="0x10de"
    ATTRS{device}=="0x026e"
    ATTRS{subsystem_vendor}=="0x1458"
    ATTRS{subsystem_device}=="0x5004"
    ATTRS{class}=="0x0c0320"
    ATTRS{irq}=="23"
    ATTRS{local_cpus}=="f"
    ATTRS{local_cpulist}=="0-3"
    ATTRS{modalias}=="pci:v000010DEd0000026Esv00001458sd00005004bc0Csc03i20"
    ATTRS{dma_mask_bits}=="32"
    ATTRS{consistent_dma_mask_bits}=="32"
    ATTRS{enable}=="1"
    ATTRS{broken_parity_status}=="0"
    ATTRS{msi_bus}==""
    ATTRS{companion}==""

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