NETLINK取得设备插拔消息

[jason176374]

我使用NETLINK来取得USB设备的插拔信息。我想知道哪个busid的设备被拔掉了，但是会收到一堆信息，如何从这些信息里面提炼出我要的信息呢？
请大家出出主意。
一下是我把一个USB设备时收到的消息：
remove@/class/input/input23/event3
remove@/class/input/input23
remove@/devices/pci0000:00/0000:00:1d.0/usb1/1-2/1-2.1/1-2.1:1.0
remove@/class/usb_endpoint/usbdev1.6_ep82
remove@/class/input/input24/event4
remove@/class/input/input24
remove@/devices/pci0000:00/0000:00:1d.0/usb1/1-2/1-2.1/1-2.1:1.1
remove@/class/usb_device/usbdev1.6
remove@/class/usb_endpoint/usbdev1.6_ep00
remove@/devices/pci0000:00/0000:00:1d.0/usb1/1-2/1-2.1
remove@/class/usb_endpoint/usbdev1.5_ep81
remove@/devices/pci0000:00/0000:00:1d.0/usb1/1-2/1-2:1.0
remove@/class/usb_device/usbdev1.5
remove@/class/usb_endpoint/usbdev1.5_ep00
remove@/devices/pci0000:00/0000:00:1d.0/usb1/1-2
remove@/class/usb_endpoint/usbdev3.7_ep81
remove@/class/input/input22/mouse1
remove@/class/input/input22/event2
remove@/class/input/input22
remove@/devices/pci0000:00/0000:00:1d.2/usb3/3-2/3-2:1.0
remove@/class/usb_device/usbdev3.7
remove@/class/usb_endpoint/usbdev3.7_ep00
remove@/devices/pci0000:00/0000:00:1d.2/usb3/3-2

我最终想知道的信息是：
busid为1-2.1的设备被拔掉了。

谢谢大家

[jason176374]

自己来答吧：
http://blog.csdn.net/Breathomn/archive/2008/12/18/3550757.aspx

[zkuang82]

remove@/devices/pci0000:00/0000:00:1d.0/usb1/1-2/1-2.1

不是有吗？？你想要怎么提炼？正则表达式？

[jason176374]

remove@/devices/pci0000:00/0000:00:1d.0/usb1/1-2/1-2.1/1-2.1:1.0
remove@/devices/pci0000:00/0000:00:1d.0/usb1/1-2/1-2.1/1-2.1:1.1
remove@/devices/pci0000:00/0000:00:1d.0/usb1/1-2/1-2.1
remove@/devices/pci0000:00/0000:00:1d.0/usb1/1-2/1-2:1.0

如何区分呢？

[zkuang82]

参考LDD3，关于PCI和USB的章节，命名规则上面都有。