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Always turn off hyphenation; it makes .\" way too many mistakes in technical documents. .if n .ad l .nh .SH "NAME" BIO_s_null \- null data sink .SH "SYNOPSIS" .IX Header "SYNOPSIS" .Vb 1 \& #include <openssl/bio.h> \& \& BIO_METHOD * BIO_s_null(void); .Ve .SH "DESCRIPTION" .IX Header "DESCRIPTION" \&\fBBIO_s_null()\fR returns the null sink \s-1BIO\s0 method. Data written to the null sink is discarded, reads return \s-1EOF.\s0 .\" Oracle has added the ARC stability level to this manual page .SH ATTRIBUTES See .BR attributes (7) for descriptions of the following attributes: .sp .TS box; cbp-1 | cbp-1 l | l . ATTRIBUTE TYPE ATTRIBUTE VALUE = Availability library/security/openssl = Stability Pass-through uncommitted .TE .PP .SH "NOTES" .IX Header "NOTES" A null sink \s-1BIO\s0 behaves in a similar manner to the Unix /dev/null device. .PP A null bio can be placed on the end of a chain to discard any data passed through it. .PP 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 \s-1BIO\s0 chain must normally include a source/sink \s-1BIO\s0 this can be achieved by adding a null sink \s-1BIO\s0 to the end of the chain .\" Oracle has added source availability information to this manual page Source code for open source software components in Oracle Solaris can be found at https://www.oracle.com/downloads/opensource/solaris-source-code-downloads.html. This software was built from source available at https://github.com/oracle/solaris-userland. The original community source was downloaded from https://www.openssl.org/source/openssl-1.0.2zi.tar.gz. Further information about this software can be found on the open source community website at https://www.openssl.org/. .SH "RETURN VALUES" .IX Header "RETURN VALUES" \&\fBBIO_s_null()\fR returns the null sink \s-1BIO\s0 method. .SH "SEE ALSO" .IX Header "SEE ALSO" \&\s-1TBA\s0