53934822ac
Files like dh.pod, etc., mostly duplicated the API-specific pod files. Removed the duplicated content; that often mean the whole file could be removed. Some of the content about internals got moved into README files in the source tree. Some content (e.g., err.pod) got moved into other pod pages. Annotate generic pages, remove dup NAME Reviewed-by: Richard Levitte <levitte@openssl.org>
69 lines
1.9 KiB
Text
69 lines
1.9 KiB
Text
=pod
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=head1 NAME
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BIO_new, BIO_set, BIO_up_ref, BIO_free, BIO_vfree, BIO_free_all - BIO allocation and freeing functions
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=head1 SYNOPSIS
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#include <openssl/bio.h>
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BIO * BIO_new(const BIO_METHOD *type);
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int BIO_set(BIO *a,const BIO_METHOD *type);
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int BIO_up_ref(BIO *a);
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int BIO_free(BIO *a);
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void BIO_vfree(BIO *a);
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void BIO_free_all(BIO *a);
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=head1 DESCRIPTION
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The BIO_new() function returns a new BIO using method B<type>.
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BIO_set() sets the method of an already existing BIO.
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BIO_up_ref() increments the reference count associated with the BIO object.
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BIO_free() frees up a single BIO, BIO_vfree() also frees up a single BIO
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but it does not return a value.
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If B<a> is NULL nothing is done.
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Calling BIO_free() may also have some effect
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on the underlying I/O structure, for example it may close the file being
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referred to under certain circumstances. For more details see the individual
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BIO_METHOD descriptions.
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BIO_free_all() frees up an entire BIO chain, it does not halt if an error
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occurs freeing up an individual BIO in the chain.
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If B<a> is NULL nothing is done.
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=head1 RETURN VALUES
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BIO_new() returns a newly created BIO or NULL if the call fails.
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BIO_set(), BIO_up_ref() and BIO_free() return 1 for success and 0 for failure.
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BIO_free_all() and BIO_vfree() do not return values.
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=head1 NOTES
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If BIO_free() is called on a BIO chain it will only free one BIO resulting
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in a memory leak.
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Calling BIO_free_all() on a single BIO has the same effect as calling BIO_free()
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on it other than the discarded return value.
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=head1 EXAMPLE
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Create a memory BIO:
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BIO *mem = BIO_new(BIO_s_mem());
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=head1 COPYRIGHT
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Copyright 2000-2016 The OpenSSL Project Authors. All Rights Reserved.
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Licensed under the OpenSSL license (the "License"). 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 LICENSE in the source distribution or at
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L<https://www.openssl.org/source/license.html>.
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=cut
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