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28 lines
1.0 KiB
Groff
28 lines
1.0 KiB
Groff
23 years ago
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.TH buffer_flush 3
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.SH NAME
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buffer_flush \- feed buffer to write function
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.SH SYNTAX
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.B #include <buffer.h>
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int \fBbuffer_flush\fP(buffer* \fIb\fR);
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.SH DESCRIPTION
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buffer_flush feeds a string \fId\fR[0], \fId\fR[1], ...,
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\fId\fR[\fIdlen\fR-1] to the write operation by calling
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\fBop\fR(\fIfd\fR,\fId\fR,\fIdlen\fR)
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If \fBop\fR successfully handles one or more bytes at the beginning of
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the string, it must return the number of bytes handled; if this number
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is smaller than \fIdlen\fR, buffer_flush will call \fBop\fR again with
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the rest of the string. If \fBop\fR does not handle any bytes, and does
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not encounter an error, it must return 0, or return -1 with \fIerrno\fR
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set to EINTR; in either case, buffer_flush will immediately call \fBop\fR
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again. If \fBop\fR encounters an error, it must return -1 with errno set to
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something other than EINTR; buffer_flush will pass the error to the
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caller.
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On success, buffer_flush returns 0. On error, buffer_flush returns -1,
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setting \fIerrno\fR appropriately.
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.SH "SEE ALSO"
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buffer_init(3)
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