STREAMS System Calls
Table 2-1 offers an overview of some basic STREAMS-related system calls.
Table 2-1 Summary of Basic STREAMS-related
System Calls
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| Opens a stream
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| Closes a stream
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| Reads data from a stream
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| Writes data to a stream
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| Controls a stream
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| Receives a message at the stream head
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| Receives a priority message at the stream head
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| Sends a message downstream
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| Sends a priority message downstream
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| Identifies files on which a user can send or receive messages, or on which certain
events have occurred (not restricted to STREAMS, although historically it was)
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| Creates a bidirectional channel that provides a communication path between multiple
processes
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Note - Sections 1, 2, 3, 7, and 9 of the online manual pages (man pages) contain
all the STREAMS information.