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25 lines
931 B
Groff
25 lines
931 B
Groff
21 years ago
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.TH io_close 3
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.SH NAME
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io_close \- close a file descriptor
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.SH SYNTAX
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.B #include <io.h>
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void \fBio_close\fP(int64 fd);
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.SH DESCRIPTION
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io_close eliminates the descriptor numbered \fIfd\fR. This usually does not
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mean eliminating the object that the descriptor is talking to.
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(For example, if a descriptor writes to a named disk file, closing the
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descriptor will not remove the file; it simply removes one way of
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writing to the file. On the other hand, a pipe disappears as soon as no
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descriptors refer to it.)
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io_close has no return value; it always succeeds in deallocating the
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memory used for the descriptor. If \fIfd\fR is not the number of a
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descriptor, io_close has no effect.
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io_close() is like close(), but it also removes the descriptor from the
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internal io_wait() data structures. If you called io_fd on a
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descriptor, you need to use io_close to close it, not just close().
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.SH "SEE ALSO"
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io_wait(3), io_canwrite(3)
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