/usr/include/polarssl/memory_buffer_alloc.h is in libpolarssl-dev 1.3.9-2.1+deb8u3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 | /**
* \file memory_buffer_alloc.h
*
* \brief Buffer-based memory allocator
*
* Copyright (C) 2006-2014, Brainspark B.V.
*
* This file is part of PolarSSL (http://www.polarssl.org)
* Lead Maintainer: Paul Bakker <polarssl_maintainer at polarssl.org>
*
* All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifndef POLARSSL_MEMORY_BUFFER_ALLOC_H
#define POLARSSL_MEMORY_BUFFER_ALLOC_H
#if !defined(POLARSSL_CONFIG_FILE)
#include "config.h"
#else
#include POLARSSL_CONFIG_FILE
#endif
#include <stdlib.h>
/**
* \name SECTION: Module settings
*
* The configuration options you can set for this module are in this section.
* Either change them in config.h or define them on the compiler command line.
* \{
*/
#if !defined(POLARSSL_MEMORY_ALIGN_MULTIPLE)
#define POLARSSL_MEMORY_ALIGN_MULTIPLE 4 /**< Align on multiples of this value */
#endif
/* \} name SECTION: Module settings */
#define MEMORY_VERIFY_NONE 0
#define MEMORY_VERIFY_ALLOC (1 << 0)
#define MEMORY_VERIFY_FREE (1 << 1)
#define MEMORY_VERIFY_ALWAYS (MEMORY_VERIFY_ALLOC | MEMORY_VERIFY_FREE)
#ifdef __cplusplus
extern "C" {
#endif
/**
* \brief Initialize use of stack-based memory allocator.
* The stack-based allocator does memory management inside the
* presented buffer and does not call malloc() and free().
* It sets the global polarssl_malloc() and polarssl_free() pointers
* to its own functions.
* (Provided polarssl_malloc() and polarssl_free() are thread-safe if
* POLARSSL_THREADING_C is defined)
*
* \note This code is not optimized and provides a straight-forward
* implementation of a stack-based memory allocator.
*
* \param buf buffer to use as heap
* \param len size of the buffer
*
* \return 0 if successful
*/
int memory_buffer_alloc_init( unsigned char *buf, size_t len );
/**
* \brief Free the mutex for thread-safety and clear remaining memory
*/
void memory_buffer_alloc_free( void );
/**
* \brief Determine when the allocator should automatically verify the state
* of the entire chain of headers / meta-data.
* (Default: MEMORY_VERIFY_NONE)
*
* \param verify One of MEMORY_VERIFY_NONE, MEMORY_VERIFY_ALLOC,
* MEMORY_VERIFY_FREE or MEMORY_VERIFY_ALWAYS
*/
void memory_buffer_set_verify( int verify );
#if defined(POLARSSL_MEMORY_DEBUG)
/**
* \brief Print out the status of the allocated memory (primarily for use
* after a program should have de-allocated all memory)
* Prints out a list of 'still allocated' blocks and their stack
* trace if POLARSSL_MEMORY_BACKTRACE is defined.
*/
void memory_buffer_alloc_status( void );
#endif /* POLARSSL_MEMORY_DEBUG */
/**
* \brief Verifies that all headers in the memory buffer are correct
* and contain sane values. Helps debug buffer-overflow errors.
*
* Prints out first failure if POLARSSL_MEMORY_DEBUG is defined.
* Prints out full header information if POLARSSL_MEMORY_DEBUG_HEADERS
* is defined. (Includes stack trace information for each block if
* POLARSSL_MEMORY_BACKTRACE is defined as well).
*
* \returns 0 if verified, 1 otherwise
*/
int memory_buffer_alloc_verify( void );
#ifdef __cplusplus
}
#endif
#endif /* memory_buffer_alloc.h */
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