TestSuite/device io

Device IO

IO Management(external)

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|register a device driver |devnullfatal01

|unregister a device driver |

|register a device name |

|look up a device name |

|open a device |

|close a device |

|read from a device |

|write to a device |

|special device services |

|terminal IO |termios* |}= Posix Asynchronous IO =

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Device IO Internal

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|initialize a device driver |

|open a device |

|close a device |

|read from a device |

|write to a device |

|special device services | |}