$NetBSD: BIO_s_null.3,v 1.5 2026/04/08 17:06:41 christos Exp $
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Title "BIO_s_null 3"
way too many mistakes in technical documents.
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-*- mode: troff; coding: utf-8 -*-
Automatically generated by Pod::Man v6.0.2 (Pod::Simple 3.45)
Standard preamble:
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========================================================================
Title "BIO_s_null 3"
BIO_s_null 3 2026-04-07 3.5.6 OpenSSL
For nroff, turn off justification. Always turn off hyphenation; it makesway too many mistakes in technical documents.
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NAME
BIO_s_null - null data sink
SYNOPSIS
Header "SYNOPSIS" .Vb 1
#include <openssl/bio.h>
\&
const BIO_METHOD *BIO_s_null(void);
.Ve
DESCRIPTION
Header "DESCRIPTION" \fBBIO_s_null() returns the null sink BIO method. Data written to
the null sink is discarded, reads return EOF.
NOTES
Header "NOTES" A null sink BIO behaves in a similar manner to the Unix /dev/null
device.
A null bio can be placed on the end of a chain to discard any data passed through it.
A null sink is useful if, for example, an application wishes to digest some data by writing through a digest bio but not send the digested data anywhere. Since a BIO chain must normally include a source/sink BIO this can be achieved by adding a null sink BIO to the end of the chain
"RETURN VALUES"
Header "RETURN VALUES" \fBBIO_s_null() returns the null sink BIO method.
COPYRIGHT
Header "COPYRIGHT" Copyright 2000-2016 The OpenSSL Project Authors. All Rights Reserved.
Licensed under the Apache License 2.0 (the "License"). You may not use this file except in compliance with the License. You can obtain a copy in the file LICENSE in the source distribution or at <https://www.openssl.org/source/license.html>.
Indexes created Fri Apr 24 00:22:58 UTC 2026