Question

我的USB 3G调制解调器出了问题，我做了调试，但我无法确定.kext文件在/ dev中创建设备

如何确定/ dev中的设备文件（如/dev/usbdriver.001）和.kext之间的关系？

Answer 1

要创建/ dev条目，Kext通常会使用IOxxxBSDClient（例如Serial，Media等）。您可以使用ioreg -l，并查找它，如下所示：

... (this would be the parent class) ...
|   +-o IOSerialBSDClient  <class IOSerialBSDClient, id 0x100000385, registered, matched, active, busy 0 (0 ms), retain 5>
      | |       {
      | |         "IOClass" = "IOSerialBSDClient"
      | |         "CFBundleIdentifier" = "com.apple.iokit.IOSerialFamily"
      | |         "IOProviderClass" = "IOSerialStreamSync"
      | |         "IOTTYBaseName" = "Bluetooth-Serial-1"
      | |         "IOSerialBSDClientType" = "IORS232SerialStream"
      | |         "IOProbeScore" = 1000
      | |         "IOCalloutDevice" = "/dev/cu.Bluetooth-Serial-1"
      | |         "IODialinDevice" = "/dev/tty.Bluetooth-Serial-1"
      | |         "IOMatchCategory" = "IODefaultMatchCategory"
      | |         "IOTTYDevice" = "Bluetooth-Serial-1"
      | |         "IOResourceMatch" = "IOBSD"
      | |         "IOTTYSuffix" = ""
      | |       }

这通常可以解决问题。

/ dev中的MacOS内核，.kext和设备

1 个答案: