2015-07-19 01:31:17 +00:00
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.TH STREAM 3
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.SH NAME
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stream \- fast sequential file access
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.SH SYNOPSIS
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.nf
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.B bind #¶ /fd
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.B /fd/0stream
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.B /fd/1stream
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\&...
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.fi
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.SH DESCRIPTION
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The
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.I stream
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device serves a one-level directory containing files of the form
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.IR N stream
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where
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.I N
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is a file descriptor of the current process.
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.PP
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An
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.IR open (2)
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returns a stream file descriptor connected to the original file
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refered to by the file descriptor
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.IR N .
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When a stream was opend for reading, the device will start
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continuously reading the file in the background until it reaches
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the end of the file. A
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.IR read (2)
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on the stream consumes the prefetched data in sequential order.
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.PP
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When a stream is opend for writing, writes to the stream will
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return immidiately without waiting for the data to be written
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to the file. A zero-length write can be used to wait for the
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buffered data to drain and return any previous write errors.
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.SH SEE ALSO
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2015-07-19 01:34:08 +00:00
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.IR dup (3),
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2015-07-19 01:31:17 +00:00
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.IR pipe (3)
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.SH SOURCE
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.B /sys/src/9/port/devstream.c
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