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Merge pull request #4006 from chris-jones-arm/development

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Add macro to check error code additions/combinations
This commit is contained in:
Gilles Peskine 2021-04-28 16:47:29 +02:00 • committed by GitHub
commit e67665ca20
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20 changed files with 447 additions and 298 deletions
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53
include/mbedtls/error.h
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@ -30,6 +30,11 @@
#include <stddef.h>
#if ( defined(__ARMCC_VERSION) || defined(_MSC_VER) ) && \
!defined(inline) && !defined(__cplusplus)
#define inline __inline
#endif
/**
* Error code layout.
*
@ -117,6 +122,54 @@ extern "C" {
#define MBEDTLS_ERR_PLATFORM_HW_ACCEL_FAILED -0x0070 /**< Hardware accelerator failed */
#define MBEDTLS_ERR_PLATFORM_FEATURE_UNSUPPORTED -0x0072 /**< The requested feature is not supported by the platform */
/**
* \brief Combines a high-level and low-level error code together.
*
* Wrapper macro for mbedtls_error_add(). See that function for
* more details.
*/
#define MBEDTLS_ERROR_ADD( high, low ) \
mbedtls_error_add( high, low, __FILE__, __LINE__ )
#if defined(MBEDTLS_TEST_HOOKS)
/**
* \brief Testing hook called before adding/combining two error codes together.
* Only used when invasive testing is enabled via MBEDTLS_TEST_HOOKS.
*/
extern void (*mbedtls_test_hook_error_add)( int, int, const char *, int );
#endif
/**
* \brief Combines a high-level and low-level error code together.
*
* This function can be called directly however it is usually
* called via the #MBEDTLS_ERROR_ADD macro.
*
* While a value of zero is not a negative error code, it is still an
* error code (that denotes success) and can be combined with both a
* negative error code or another value of zero.
*
* \note When invasive testing is enabled via #MBEDTLS_TEST_HOOKS, also try to
* call \link mbedtls_test_hook_error_add \endlink.
*
* \param high high-level error code. See error.h for more details.
* \param low low-level error code. See error.h for more details.
* \param file file where this error code addition occured.
* \param line line where this error code addition occured.
*/
static inline int mbedtls_error_add( int high, int low,
const char *file, int line )
{
#if defined(MBEDTLS_TEST_HOOKS)
if( *mbedtls_test_hook_error_add != NULL )
( *mbedtls_test_hook_error_add )( high, low, file, line );
#endif
(void)file;
(void)line;
return( high + low );
}
/**
* \brief Translate a mbed TLS error code into a string representation,
* Result is truncated if necessary and always includes a terminating