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-[Introduction]
-
-devnode is a translator that creates the device file for the kernel device. It provides another way for other programs to open the kernel device.
-The device file should be created in /dev with the device name as its file name, so clients can find the device file easily.
-Clients need to get the port to the devnode translator by calling file_name_lookup() and uses this port as a master device port to open the device by calling device_open(). The device name used in device_open() is specified by '-n' option of devnode.
-
-
-[Usage]
-
-Usage: devnode [OPTION...] device
-Hurd devnode translator.
-
- -n, --name=DEVICENAME Accept open from clients only with DEVICENAME
- -M, --master_device=FILE Get a pseudo master device port
- -?, --help Give this help list
- --usage Give a short usage message
- -V, --version Print program version
-
-The '-n' option specifies the device name used by clients in device_open(). It can be optional. If it's specified, clients must use the name to open the device. Otherwise, every device name used by clients in device_open() is acceptable.
-The '-M' option specifies the file where devnode can get the master device port. This option can be useful to open the virtual interface created by eth-multiplexer, for example.
-
-
-[Internal]
-
-devnode is very simple. It implements the server side functions in device.defs, so it can receive the request of opening a device from clients. Only ds_device_open is actually implemented, which opens the device and returns the port to the device. Normally, devnode shouldn't get other requests.