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.TH ndelay_on 3
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.SH NAME
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ndelay_on \- put file descriptor in non-blocking mode
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.SH SYNTAX
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.B #include <ndelay.h>
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extern int \fBndelay_on\fP(int \fIfd\fR);
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.SH DESCRIPTION
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ndelay_on puts a file descriptor in non-blocking mode. Reading from and
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writing to non-blocking network sockets, FIFOs or device files will
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return immediately, even if not as many bytes have been processed as
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were specified.
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If an error occurred, ndelay_on will return nonzero and set \fIerrno\fR
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accordingly.
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.SH "SEE ALSO"
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fcntl(2), ndelay_off(3)
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