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Mutex usage testing: set up wrapper functions

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When using pthread mutexes (MBEDTLS_THREADING_C and
MBEDTLS_THREADING_PTHREAD enabled), and when test hooks are
enabled (MBEDTLS_TEST_HOOKS), set up wrappers around the
mbedtls_mutex_xxx abstraction. In this commit, the wrapper functions
don't do anything yet.

Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
This commit is contained in:
Gilles Peskine 2021-01-29 21:17:11 +01:00
parent e137ebce7f
commit 44498ff9eb
2 changed files with 58 additions and 0 deletions
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54
tests/suites/helpers.function
View file

@ -38,6 +38,12 @@ typedef UINT32 uint32_t;
#include <unistd.h>
#endif
#if defined(MBEDTLS_THREADING_C) && defined(MBEDTLS_THREADING_PTHREAD) && \
defined(MBEDTLS_TEST_HOOKS)
#include "mbedtls/threading.h"
#define MBEDTLS_TEST_MUTEX_USAGE
#endif
/*
* Define the two macros
*
@ -519,3 +525,51 @@ int rnd_pseudo_rand( void *rng_state, unsigned char *output, size_t len )
return( 0 );
}
/** Mutex usage verification framework.
*
*/
#if defined(MBEDTLS_TEST_MUTEX_USAGE)
typedef struct
{
void (*init)( mbedtls_threading_mutex_t * );
void (*free)( mbedtls_threading_mutex_t * );
int (*lock)( mbedtls_threading_mutex_t * );
int (*unlock)( mbedtls_threading_mutex_t * );
} mutex_functions_t;
static mutex_functions_t mutex_functions;
static void mbedtls_test_wrap_mutex_init( mbedtls_threading_mutex_t *mutex )
{
mutex_functions.init( mutex );
}
static void mbedtls_test_wrap_mutex_free( mbedtls_threading_mutex_t *mutex )
{
mutex_functions.free( mutex );
}
static int mbedtls_test_wrap_mutex_lock( mbedtls_threading_mutex_t *mutex )
{
int ret = mutex_functions.lock( mutex );
return( ret );
}
static int mbedtls_test_wrap_mutex_unlock( mbedtls_threading_mutex_t *mutex )
{
return( mutex_functions.unlock( mutex ) );
}
static void mbedtls_test_mutex_usage_init( void )
{
mutex_functions.init = mbedtls_mutex_init;
mutex_functions.free = mbedtls_mutex_free;
mutex_functions.lock = mbedtls_mutex_lock;
mutex_functions.unlock = mbedtls_mutex_unlock;
mbedtls_mutex_init = &mbedtls_test_wrap_mutex_init;
mbedtls_mutex_free = &mbedtls_test_wrap_mutex_free;
mbedtls_mutex_lock = &mbedtls_test_wrap_mutex_lock;
mbedtls_mutex_unlock = &mbedtls_test_wrap_mutex_unlock;
}
#endif /* MBEDTLS_TEST_MUTEX_USAGE */

4
tests/suites/main_test.function
View file

@ -285,6 +285,10 @@ int main(int argc, const char *argv[])
mbedtls_memory_buffer_alloc_init( alloc_buf, sizeof(alloc_buf) );
#endif
#if defined(MBEDTLS_TEST_MUTEX_USAGE)
mbedtls_test_mutex_usage_init( );
#endif
/*
* The C standard doesn't guarantee that all-bits-0 is the representation
* of a NULL pointer. We do however use that in our code for initializing