【发布时间】：2015-01-30 09:57:13
【问题描述】：
遗憾的是，我的 udev 规则不起作用 - 我正在尝试为特定的 USB 设备创建符号链接。这里是关于设备的信息：
/etc/udev/rules.d# udevadm info --query=all --attribute-walk --name=/dev/ttyUSB1
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/platform/bcm2708_usb/usb1/1-1/1-1.3/1-1.3.5/1-1.3.5.2/1-1.3.5.2:1.0/ttyUSB1/tty/ttyUSB1':
KERNEL=="ttyUSB1"
SUBSYSTEM=="tty"
DRIVER==""
looking at parent device '/devices/platform/bcm2708_usb/usb1/1-1/1-1.3/1-1.3.5/1-1.3.5.2/1-1.3.5.2:1.0/ttyUSB1':
KERNELS=="ttyUSB1"
SUBSYSTEMS=="usb-serial"
DRIVERS=="cp210x"
ATTRS{port_number}=="0"
looking at parent device '/devices/platform/bcm2708_usb/usb1/1-1/1-1.3/1-1.3.5/1-1.3.5.2/1-1.3.5.2:1.0':
KERNELS=="1-1.3.5.2:1.0"
SUBSYSTEMS=="usb"
DRIVERS=="cp210x"
ATTRS{bInterfaceClass}=="ff"
ATTRS{bInterfaceSubClass}=="00"
ATTRS{bInterfaceProtocol}=="00"
ATTRS{bNumEndpoints}=="02"
ATTRS{supports_autosuspend}=="1"
ATTRS{bAlternateSetting}==" 0"
ATTRS{bInterfaceNumber}=="00"
ATTRS{interface}=="CP2104 USB to UART Bridge Controller"
looking at parent device '/devices/platform/bcm2708_usb/usb1/1-1/1-1.3/1-1.3.5/1-1.3.5.2':
KERNELS=="1-1.3.5.2"
SUBSYSTEMS=="usb"
DRIVERS=="usb"
ATTRS{bDeviceSubClass}=="00"
ATTRS{bDeviceProtocol}=="00"
ATTRS{devpath}=="1.3.5.2"
ATTRS{idVendor}=="10c4"
ATTRS{speed}=="12"
ATTRS{bNumInterfaces}==" 1"
ATTRS{bConfigurationValue}=="1"
ATTRS{bMaxPacketSize0}=="64"
ATTRS{busnum}=="1"
ATTRS{devnum}=="12"
ATTRS{configuration}==""
ATTRS{bMaxPower}=="200mA"
ATTRS{authorized}=="1"
ATTRS{bmAttributes}=="80"
ATTRS{bNumConfigurations}=="1"
ATTRS{maxchild}=="0"
ATTRS{bcdDevice}=="0100"
ATTRS{avoid_reset_quirk}=="0"
ATTRS{quirks}=="0x0"
ATTRS{serial}=="006311F9"
ATTRS{version}==" 2.00"
ATTRS{urbnum}=="15"
ATTRS{ltm_capable}=="no"
ATTRS{manufacturer}=="Silicon Labs"
ATTRS{removable}=="removable"
ATTRS{idProduct}=="ea60"
ATTRS{bDeviceClass}=="00"
ATTRS{product}=="CP2104 USB to UART Bridge Controller"
looking at parent device '/devices/platform/bcm2708_usb/usb1/1-1/1-1.3/1-1.3.5':
KERNELS=="1-1.3.5"
SUBSYSTEMS=="usb"
DRIVERS=="usb"
ATTRS{bDeviceSubClass}=="00"
ATTRS{bDeviceProtocol}=="02"
ATTRS{devpath}=="1.3.5"
ATTRS{idVendor}=="0835"
ATTRS{speed}=="480"
ATTRS{bNumInterfaces}==" 1"
ATTRS{bConfigurationValue}=="1"
ATTRS{bMaxPacketSize0}=="64"
ATTRS{busnum}=="1"
ATTRS{devnum}=="9"
ATTRS{configuration}==""
ATTRS{bMaxPower}=="100mA"
ATTRS{authorized}=="1"
ATTRS{bmAttributes}=="e0"
ATTRS{bNumConfigurations}=="1"
ATTRS{maxchild}=="5"
ATTRS{bcdDevice}=="0106"
ATTRS{avoid_reset_quirk}=="0"
ATTRS{quirks}=="0x0"
ATTRS{version}==" 2.00"
ATTRS{urbnum}=="51"
ATTRS{ltm_capable}=="no"
ATTRS{manufacturer}=="Action Star"
ATTRS{removable}=="removable"
ATTRS{idProduct}=="8500"
ATTRS{bDeviceClass}=="09"
ATTRS{product}=="USB2.0 Hub"
looking at parent device '/devices/platform/bcm2708_usb/usb1/1-1/1-1.3':
KERNELS=="1-1.3"
SUBSYSTEMS=="usb"
DRIVERS=="usb"
ATTRS{bDeviceSubClass}=="00"
ATTRS{bDeviceProtocol}=="02"
ATTRS{devpath}=="1.3"
ATTRS{idVendor}=="0835"
ATTRS{speed}=="480"
ATTRS{bNumInterfaces}==" 1"
ATTRS{bConfigurationValue}=="1"
ATTRS{bMaxPacketSize0}=="64"
ATTRS{busnum}=="1"
ATTRS{devnum}=="4"
ATTRS{configuration}==""
ATTRS{bMaxPower}=="100mA"
ATTRS{authorized}=="1"
ATTRS{bmAttributes}=="e0"
ATTRS{bNumConfigurations}=="1"
ATTRS{maxchild}=="5"
ATTRS{bcdDevice}=="0106"
ATTRS{avoid_reset_quirk}=="0"
ATTRS{quirks}=="0x0"
ATTRS{version}==" 2.00"
ATTRS{urbnum}=="70"
ATTRS{ltm_capable}=="no"
ATTRS{manufacturer}=="Action Star"
ATTRS{removable}=="removable"
ATTRS{idProduct}=="8500"
ATTRS{bDeviceClass}=="09"
ATTRS{product}=="USB2.0 Hub"
looking at parent device '/devices/platform/bcm2708_usb/usb1/1-1':
KERNELS=="1-1"
SUBSYSTEMS=="usb"
DRIVERS=="usb"
ATTRS{bDeviceSubClass}=="00"
ATTRS{bDeviceProtocol}=="02"
ATTRS{devpath}=="1"
ATTRS{idVendor}=="0424"
ATTRS{speed}=="480"
ATTRS{bNumInterfaces}==" 1"
ATTRS{bConfigurationValue}=="1"
ATTRS{bMaxPacketSize0}=="64"
ATTRS{busnum}=="1"
ATTRS{devnum}=="2"
ATTRS{configuration}==""
ATTRS{bMaxPower}=="2mA"
ATTRS{authorized}=="1"
ATTRS{bmAttributes}=="e0"
ATTRS{bNumConfigurations}=="1"
ATTRS{maxchild}=="5"
ATTRS{bcdDevice}=="0200"
ATTRS{avoid_reset_quirk}=="0"
ATTRS{quirks}=="0x0"
ATTRS{version}==" 2.00"
ATTRS{urbnum}=="63"
ATTRS{ltm_capable}=="no"
ATTRS{removable}=="unknown"
ATTRS{idProduct}=="9514"
ATTRS{bDeviceClass}=="09"
looking at parent device '/devices/platform/bcm2708_usb/usb1':
KERNELS=="usb1"
SUBSYSTEMS=="usb"
DRIVERS=="usb"
ATTRS{bDeviceSubClass}=="00"
ATTRS{bDeviceProtocol}=="01"
ATTRS{devpath}=="0"
ATTRS{idVendor}=="1d6b"
ATTRS{speed}=="480"
ATTRS{bNumInterfaces}==" 1"
ATTRS{bConfigurationValue}=="1"
ATTRS{bMaxPacketSize0}=="64"
ATTRS{authorized_default}=="1"
ATTRS{busnum}=="1"
ATTRS{devnum}=="1"
ATTRS{configuration}==""
ATTRS{bMaxPower}=="0mA"
ATTRS{authorized}=="1"
ATTRS{bmAttributes}=="e0"
ATTRS{bNumConfigurations}=="1"
ATTRS{maxchild}=="1"
ATTRS{bcdDevice}=="0312"
ATTRS{avoid_reset_quirk}=="0"
ATTRS{quirks}=="0x0"
ATTRS{serial}=="bcm2708_usb"
ATTRS{version}==" 2.00"
ATTRS{urbnum}=="26"
ATTRS{ltm_capable}=="no"
ATTRS{manufacturer}=="Linux 3.12.29+ dwc_otg_hcd"
ATTRS{removable}=="unknown"
ATTRS{idProduct}=="0002"
ATTRS{bDeviceClass}=="09"
ATTRS{product}=="DWC OTG Controller"
looking at parent device '/devices/platform/bcm2708_usb':
KERNELS=="bcm2708_usb"
SUBSYSTEMS=="platform"
DRIVERS=="dwc_otg"
ATTRS{hnp}=="HstNegScs = 0x0"
ATTRS{srp}=="SesReqScs = 0x1"
ATTRS{regvalue}=="invalid offset"
ATTRS{hsic_connect}=="HSIC Connect = 0x1"
ATTRS{guid}=="GUID = 0x2708a000"
ATTRS{mode}=="Mode = 0x1"
ATTRS{srpcapable}=="SRPCapable = 0x1"
ATTRS{regdump}=="Register Dump"
ATTRS{gpvndctl}=="GPVNDCTL = 0x00000000"
ATTRS{ggpio}=="GGPIO = 0x00000000"
ATTRS{hprt0}=="HPRT0 = 0x00001005"
ATTRS{wr_reg_test}=="Time to write GNPTXFSIZ reg 10000000 times: 360 msecs (36 jiffies)"
ATTRS{hcd_frrem}=="HCD Dump Frame Remaining"
ATTRS{mode_ch_tim_en}=="Mode Change Ready Timer Enable = 0x0"
ATTRS{gnptxfsiz}=="GNPTXFSIZ = 0x01000306"
ATTRS{remote_wakeup}=="Remote Wakeup Sig = 0 Enabled = 0 LPM Remote Wakeup = 0"
ATTRS{busconnected}=="Bus Connected = 0x1"
ATTRS{hcddump}=="HCD Dump"
ATTRS{gotgctl}=="GOTGCTL = 0x001c0001"
ATTRS{spramdump}=="SPRAM Dump"
ATTRS{grxfsiz}=="GRXFSIZ = 0x00000306"
ATTRS{gsnpsid}=="GSNPSID = 0x4f54280a"
ATTRS{gusbcfg}=="GUSBCFG = 0x00001700"
ATTRS{hptxfsiz}=="HPTXFSIZ = 0x02000406"
ATTRS{devspeed}=="Device Speed = 0x0"
ATTRS{fr_interval}=="Frame Interval = 0x1d4c"
ATTRS{rem_wakeup_pwrdn}==""
ATTRS{bussuspend}=="Bus Suspend = 0x0"
ATTRS{buspower}=="Bus Power = 0x1"
ATTRS{hnpcapable}=="HNPCapable = 0x1"
ATTRS{rd_reg_test}=="Time to read GNPTXFSIZ reg 10000000 times: 1170 msecs (117 jiffies)"
ATTRS{enumspeed}=="Device Enumeration Speed = 0x1"
ATTRS{inv_sel_hsic}=="Invert Select HSIC = 0x0"
ATTRS{regoffset}=="0xffffffff"
looking at parent device '/devices/platform':
KERNELS=="platform"
SUBSYSTEMS==""
DRIVERS==""
这里是我的 udev 规则：
cat /etc/udev/rules.d/99-usb.rules
KERNEL=="ttyUSB?", ATTRS{serial}=="006311F9", SYMLINK+="relais_card"
很遗憾，它不起作用：
udevadm test /dev/ttyUSB1
run_command: calling: test
adm_test: version 175
This program is for debugging only, it does not run any program,
specified by a RUN key. It may show incorrect results, because
some values may be different, or not available at a simulation run.
parse_file: reading '/lib/udev/rules.d/10-local-rpi.rules' as rules file
parse_file: reading '/lib/udev/rules.d/42-qemu-usb.rules' as rules file
parse_file: reading '/lib/udev/rules.d/50-udev-default.rules' as rules file
parse_file: reading '/lib/udev/rules.d/55-dm.rules' as rules file
parse_file: reading '/lib/udev/rules.d/60-cdrom_id.rules' as rules file
parse_file: reading '/lib/udev/rules.d/60-fuse.rules' as rules file
parse_file: reading '/lib/udev/rules.d/60-gnupg.rules' as rules file
parse_file: reading '/lib/udev/rules.d/60-libgphoto2-2.rules' as rules file
parse_file: reading '/lib/udev/rules.d/60-libsane.rules' as rules file
parse_file: reading '/lib/udev/rules.d/60-persistent-alsa.rules' as rules file
parse_file: reading '/lib/udev/rules.d/60-persistent-input.rules' as rules file
parse_file: reading '/lib/udev/rules.d/60-persistent-serial.rules' as rules file
parse_file: reading '/lib/udev/rules.d/60-persistent-storage-dm.rules' as rules file
parse_file: reading '/lib/udev/rules.d/60-persistent-storage-tape.rules' as rules file
parse_file: reading '/lib/udev/rules.d/60-persistent-storage.rules' as rules file
parse_file: reading '/lib/udev/rules.d/60-persistent-v4l.rules' as rules file
parse_file: reading '/lib/udev/rules.d/61-accelerometer.rules' as rules file
parse_file: reading '/run/udev/rules.d/61-dev-root-link.rules' as rules file
parse_file: reading '/lib/udev/rules.d/64-xorg-xkb.rules' as rules file
parse_file: reading '/lib/udev/rules.d/69-cd-sensors.rules' as rules file
add_rule: IMPORT found builtin 'usb_id', replacing /lib/udev/rules.d/69-cd-sensors.rules:78
parse_file: reading '/lib/udev/rules.d/69-libmtp.rules' as rules file
parse_file: reading '/lib/udev/rules.d/69-xserver-xorg-input-wacom.rules' as rules file
parse_file: reading '/etc/udev/rules.d/70-persistent-net.rules' as rules file
parse_file: reading '/lib/udev/rules.d/70-udev-acl.rules' as rules file
parse_file: reading '/lib/udev/rules.d/75-cd-aliases-generator.rules' as rules file
parse_file: reading '/lib/udev/rules.d/75-net-description.rules' as rules file
parse_file: reading '/lib/udev/rules.d/75-persistent-net-generator.rules' as rules file
parse_file: reading '/lib/udev/rules.d/75-probe_mtd.rules' as rules file
parse_file: reading '/lib/udev/rules.d/75-tty-description.rules' as rules file
parse_file: reading '/lib/udev/rules.d/78-sound-card.rules' as rules file
parse_file: reading '/lib/udev/rules.d/80-drivers.rules' as rules file
parse_file: reading '/lib/udev/rules.d/80-networking.rules' as rules file
parse_file: reading '/lib/udev/rules.d/80-udisks.rules' as rules file
parse_file: reading '/lib/udev/rules.d/85-hdparm.rules' as rules file
parse_file: reading '/lib/udev/rules.d/85-hwclock.rules' as rules file
parse_file: reading '/lib/udev/rules.d/85-usbmuxd.rules' as rules file
parse_file: reading '/lib/udev/rules.d/90-alsa-restore.rules' as rules file
parse_file: reading '/lib/udev/rules.d/91-permissions.rules' as rules file
parse_file: reading '/lib/udev/rules.d/95-cd-devices.rules' as rules file
parse_file: reading '/lib/udev/rules.d/95-keyboard-force-release.rules' as rules file
parse_file: reading '/lib/udev/rules.d/95-keymap.rules' as rules file
parse_file: reading '/lib/udev/rules.d/95-udev-late.rules' as rules file
parse_file: reading '/lib/udev/rules.d/95-upower-battery-recall-dell.rules' as rules file
parse_file: reading '/lib/udev/rules.d/95-upower-battery-recall-fujitsu.rules' as rules file
parse_file: reading '/lib/udev/rules.d/95-upower-battery-recall-gateway.rules' as rules file
parse_file: reading '/lib/udev/rules.d/95-upower-battery-recall-ibm.rules' as rules file
parse_file: reading '/lib/udev/rules.d/95-upower-battery-recall-lenovo.rules' as rules file
parse_file: reading '/lib/udev/rules.d/95-upower-battery-recall-toshiba.rules' as rules file
parse_file: reading '/lib/udev/rules.d/95-upower-csr.rules' as rules file
parse_file: reading '/lib/udev/rules.d/95-upower-hid.rules' as rules file
parse_file: reading '/lib/udev/rules.d/95-upower-wup.rules' as rules file
parse_file: reading '/etc/udev/rules.d/99-usb.rules' as rules file
udev_rules_new: rules use 225780 bytes tokens (18815 * 12 bytes), 30112 bytes buffer
udev_rules_new: temporary index used 55560 bytes (2778 * 20 bytes)
unable to open device '/sys/dev/ttyUSB1'
你知道我的问题可能出在哪里吗？ 提前致谢！
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