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Merge remote-tracking branch 'public/pr/1518' into development-proposed

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* public/pr/1518:
  Update platform.h
  Update platform.h
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Manuel Pégourié-Gonnard 2018-04-18 12:01:48 +02:00 committed by Gilles Peskine
parent 66d396826a 9464d7b6e3
commit 4acb0055e3
1 changed files with 42 additions and 27 deletions
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69
include/mbedtls/platform.h
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@ -1,7 +1,16 @@
/**
* \file platform.h
*
* \brief The Mbed TLS platform abstraction layer.
* \brief This file contains the definitions and functions of the
* Mbed TLS platform abstraction layer.
*
* The platform abstraction layer removes the need for the library
* to directly link to standard C library functions or operating
* system services, making the library easier to port and embed.
* Application developers and users of the library can provide their own
* implementations of these functions, or implementations specific to
* their platform, which can be statically linked to the library or
* dynamically configured at runtime.
*/
/*
* Copyright (C) 2006-2018, Arm Limited (or its affiliates), All Rights Reserved
@ -102,7 +111,7 @@ extern "C" {
/* \} name SECTION: Module settings */
/*
* The function pointers for calloc and free
* The function pointers for calloc and free.
*/
#if defined(MBEDTLS_PLATFORM_MEMORY)
#if defined(MBEDTLS_PLATFORM_FREE_MACRO) && \
@ -116,7 +125,8 @@ extern void * (*mbedtls_calloc)( size_t n, size_t size );
extern void (*mbedtls_free)( void *ptr );
/**
* \brief This function allows configuring custom memory-management functions.
* \brief This function dynamically sets the memory-management
* functions used by the library, during runtime.
*
* \param calloc_func The \c calloc function implementation.
* \param free_func The \c free function implementation.
@ -140,7 +150,9 @@ int mbedtls_platform_set_calloc_free( void * (*calloc_func)( size_t, size_t ),
extern int (*mbedtls_fprintf)( FILE *stream, const char *format, ... );
/**
* \brief This function allows configuring a custom \p fprintf function pointer.
* \brief This function dynamically configures the fprintf
* function that is called when the
* mbedtls_fprintf() function is invoked by the library.
*
* \param fprintf_func The \c fprintf function implementation.
*
@ -163,8 +175,9 @@ int mbedtls_platform_set_fprintf( int (*fprintf_func)( FILE *stream, const char
extern int (*mbedtls_printf)( const char *format, ... );
/**
* \brief This function allows configuring a custom \c printf function
* pointer.
* \brief This function dynamically configures the snprintf
* function that is called when the mbedtls_snprintf()
* function is invoked by the library.
*
* \param printf_func The \c printf function implementation.
*
@ -197,12 +210,12 @@ int mbedtls_platform_win32_snprintf( char *s, size_t n, const char *fmt, ... );
extern int (*mbedtls_snprintf)( char * s, size_t n, const char * format, ... );
/**
* \brief This function allows configuring a custom \c snprintf function
* pointer.
* \brief This function allows configuring a custom
* \c snprintf function pointer.
*
* \param snprintf_func The \c snprintf function implementation.
*
* \return \c 0 on success.
* \return \c 0 on success.
*/
int mbedtls_platform_set_snprintf( int (*snprintf_func)( char * s, size_t n,
const char * format, ... ) );
@ -221,12 +234,13 @@ int mbedtls_platform_set_snprintf( int (*snprintf_func)( char * s, size_t n,
extern void (*mbedtls_exit)( int status );
/**
* \brief This function allows configuring a custom \c exit function
* pointer.
* \brief This function dynamically configures the exit
* function that is called when the mbedtls_exit()
* function is invoked by the library.
*
* \param exit_func The \c exit function implementation.
*
* \return \c 0 on success.
* \return \c 0 on success.
*/
int mbedtls_platform_set_exit( void (*exit_func)( int status ) );
#else
@ -302,7 +316,7 @@ int mbedtls_platform_set_nv_seed(
* setup or teardown operations.
*/
typedef struct {
char dummy; /**< Placeholder member, as empty structs are not portable. */
char dummy; /**< A placeholder member, as empty structs are not portable. */
}
mbedtls_platform_context;
@ -311,33 +325,34 @@ mbedtls_platform_context;
#endif /* !MBEDTLS_PLATFORM_SETUP_TEARDOWN_ALT */
/**
* \brief This function performs any platform initialization operations.
* \brief This function performs any platform-specific initialization
* operations.
*
* \param ctx The Mbed TLS context.
* \note This function should be called before any other library functions.
*
* Its implementation is platform-specific, and unless
* platform-specific code is provided, it does nothing.
*
* \note The usage and necessity of this function is dependent on the platform.
*
* \param ctx The platform context.
*
* \return \c 0 on success.
*
* \note This function is intended to allow platform-specific initialization,
* and should be called before any other library functions. Its
* implementation is platform-specific, and unless
* platform-specific code is provided, it does nothing.
*
* Its use and whether it is necessary to call it is dependent on the
* platform.
*/
int mbedtls_platform_setup( mbedtls_platform_context *ctx );
/**
* \brief This function performs any platform teardown operations.
*
* \param ctx The Mbed TLS context.
*
* \note This function should be called after every other Mbed TLS module
* has been correctly freed using the appropriate free function.
*
* Its implementation is platform-specific, and unless
* platform-specific code is provided, it does nothing.
*
* Its use and whether it is necessary to call it is dependent on the
* platform.
* \note The usage and necessity of this function is dependent on the platform.
*
* \param ctx The platform context.
*
*/
void mbedtls_platform_teardown( mbedtls_platform_context *ctx );