forked from cory/tildefriends
Cory McWilliams
09ddfffa6b
git-svn-id: https://www.unprompted.com/svn/projects/tildefriends/trunk@4088 ed5197a5-7fde-0310-b194-c3ffbd925b24
177 lines
5.2 KiB
Groff
177 lines
5.2 KiB
Groff
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.\" ========================================================================
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.\"
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.IX Title "BIO_S_NULL 3"
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.TH BIO_S_NULL 3 "2020-04-21" "1.1.1g" "OpenSSL"
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.if n .ad l
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.nh
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.SH "NAME"
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BIO_s_null \- null data sink
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.SH "SYNOPSIS"
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.IX Header "SYNOPSIS"
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.Vb 1
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\& #include <openssl/bio.h>
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\&
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\& const BIO_METHOD *BIO_s_null(void);
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.Ve
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.SH "DESCRIPTION"
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.IX Header "DESCRIPTION"
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\&\fBBIO_s_null()\fR returns the null sink \s-1BIO\s0 method. Data written to
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the null sink is discarded, reads return \s-1EOF.\s0
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.SH "NOTES"
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.IX Header "NOTES"
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A null sink \s-1BIO\s0 behaves in a similar manner to the Unix /dev/null
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device.
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.PP
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A null bio can be placed on the end of a chain to discard any data
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passed through it.
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.PP
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A null sink is useful if, for example, an application wishes to digest some
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data by writing through a digest bio but not send the digested data anywhere.
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Since a \s-1BIO\s0 chain must normally include a source/sink \s-1BIO\s0 this can be achieved
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by adding a null sink \s-1BIO\s0 to the end of the chain
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.SH "RETURN VALUES"
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.IX Header "RETURN VALUES"
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\&\fBBIO_s_null()\fR returns the null sink \s-1BIO\s0 method.
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.SH "COPYRIGHT"
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.IX Header "COPYRIGHT"
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Copyright 2000\-2016 The OpenSSL Project Authors. All Rights Reserved.
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.PP
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Licensed under the OpenSSL license (the \*(L"License\*(R"). You may not use
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this file except in compliance with the License. You can obtain a copy
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in the file \s-1LICENSE\s0 in the source distribution or at
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<https://www.openssl.org/source/license.html>.
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