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>
68 lines
1.7 KiB
Text
68 lines
1.7 KiB
Text
=pod
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=head1 NAME
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BUF_MEM_new, BUF_MEM_new_ex, BUF_MEM_free, BUF_MEM_grow - simple
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character array structure
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standard C library equivalents
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=head1 SYNOPSIS
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#include <openssl/buffer.h>
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BUF_MEM *BUF_MEM_new(void);
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#define BUF_MEM_FLAG_SECURE
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BUF_MEM *BUF_MEM_new_ex(unsigned long flags);
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void BUF_MEM_free(BUF_MEM *a);
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int BUF_MEM_grow(BUF_MEM *str, int len);
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=head1 DESCRIPTION
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The buffer library handles simple character arrays. Buffers are used for
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various purposes in the library, most notably memory BIOs.
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BUF_MEM_new() allocates a new buffer of zero size.
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BUF_MEM_new_ex() allocates a buffer with the specified flags.
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The flag B<BUF_MEM_FLAG_SECURE> specifies that the B<data> pointer
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should be allocated on the secure heap; see L<CRYPTO_secure_malloc(3)>.
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BUF_MEM_free() frees up an already existing buffer. The data is zeroed
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before freeing up in case the buffer contains sensitive data.
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BUF_MEM_grow() changes the size of an already existing buffer to
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B<len>. Any data already in the buffer is preserved if it increases in
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size.
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=head1 RETURN VALUES
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BUF_MEM_new() returns the buffer or NULL on error.
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BUF_MEM_free() has no return value.
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BUF_MEM_grow() returns zero on error or the new size (i.e. B<len>).
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=head1 SEE ALSO
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L<bio(3)>,
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L<CRYPTO_secure_malloc(3)>.
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=head1 HISTORY
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BUF_MEM_new_ex() was added in OpenSSL 1.1.0.
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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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