From aa4d426b4d3527d7e166df1a05058c9a4a0f6683 Mon Sep 17 00:00:00 2001 From: Wojtek Kosior Date: Fri, 30 Apr 2021 00:33:56 +0200 Subject: initial/final commit --- openssl-1.1.0h/doc/crypto/bio.pod | 90 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 90 insertions(+) create mode 100644 openssl-1.1.0h/doc/crypto/bio.pod (limited to 'openssl-1.1.0h/doc/crypto/bio.pod') diff --git a/openssl-1.1.0h/doc/crypto/bio.pod b/openssl-1.1.0h/doc/crypto/bio.pod new file mode 100644 index 0000000..1e1dd02 --- /dev/null +++ b/openssl-1.1.0h/doc/crypto/bio.pod @@ -0,0 +1,90 @@ +=pod + +=for comment openssl_manual_section 7 + +=head1 NAME + +bio - Basic I/O abstraction + +=for comment generic + +=head1 SYNOPSIS + + #include + +=head1 DESCRIPTION + +A BIO is an I/O abstraction, it hides many of the underlying I/O +details from an application. If an application uses a BIO for its +I/O it can transparently handle SSL connections, unencrypted network +connections and file I/O. + +There are two type of BIO, a source/sink BIO and a filter BIO. + +As its name implies a source/sink BIO is a source and/or sink of data, +examples include a socket BIO and a file BIO. + +A filter BIO takes data from one BIO and passes it through to +another, or the application. The data may be left unmodified (for +example a message digest BIO) or translated (for example an +encryption BIO). The effect of a filter BIO may change according +to the I/O operation it is performing: for example an encryption +BIO will encrypt data if it is being written to and decrypt data +if it is being read from. + +BIOs can be joined together to form a chain (a single BIO is a chain +with one component). A chain normally consist of one source/sink +BIO and one or more filter BIOs. Data read from or written to the +first BIO then traverses the chain to the end (normally a source/sink +BIO). + + +Some BIOs (such as memory BIOs) can be used immediately after calling +BIO_new(). Others (such as file BIOs) need some additional initialization, +and frequently a utility function exists to create and initialize such BIOs. + +If BIO_free() is called on a BIO chain it will only free one BIO resulting +in a memory leak. + +Calling BIO_free_all() a single BIO has the same effect as calling BIO_free() +on it other than the discarded return value. + +Normally the B argument is supplied by a function which returns a +pointer to a BIO_METHOD. There is a naming convention for such functions: +a source/sink BIO is normally called BIO_s_*() and a filter BIO +BIO_f_*(); + +=head1 EXAMPLE + +Create a memory BIO: + + BIO *mem = BIO_new(BIO_s_mem()); + +=head1 SEE ALSO + +L, +L, L, +L, L, +L, L, +L, L, +L, +L, L, +L, L, +L, L, +L, L, +L, +L, L, +L, +L + +=head1 COPYRIGHT + +Copyright 2000-2016 The OpenSSL Project Authors. All Rights Reserved. + +Licensed under the OpenSSL license (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 +L. + +=cut + -- cgit v1.2.3