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Add missing const qualifiers

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Also improve documentation
Signed-off-by: Andrzej Kurek <andrzej.kurek@arm.com>
This commit is contained in:
Andrzej Kurek 2023-02-28 10:06:42 -05:00
parent ba24138e0f
commit 138b30ac62
2 changed files with 23 additions and 13 deletions
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24
include/mbedtls/psa_util.h
View file

@ -345,38 +345,48 @@ extern mbedtls_psa_drbg_context_t *const mbedtls_psa_random_state;
#endif /* !defined(MBEDTLS_PSA_CRYPTO_EXTERNAL_RNG) */
/* PSA errors use int32_t, while Mbed TLS ones use int16_t. psa_status_t
* is enough to store either of them. */
* is enough to store either of them. The arrays below consist
* of corresponding pairs: [psa_error1, mbedtls_error1, psa_error2,
* mbedtls_error2, ...]*/
#if !defined(MBEDTLS_MD_C) || !defined(MBEDTLS_MD5_C)
extern psa_status_t psa_to_md_errors[8];
extern const psa_status_t psa_to_md_errors[8];
#endif
#if defined(MBEDTLS_LMS_C)
extern psa_status_t psa_to_lms_errors[6];
extern const psa_status_t psa_to_lms_errors[6];
#endif
#if defined(MBEDTLS_USE_PSA_CRYPTO) || defined(MBEDTLS_SSL_PROTO_TLS1_3)
extern psa_status_t psa_to_ssl_errors[14];
extern const psa_status_t psa_to_ssl_errors[14];
#endif
#if defined(PSA_WANT_KEY_TYPE_RSA_PUBLIC_KEY) || \
defined(PSA_WANT_KEY_TYPE_RSA_KEY_PAIR)
extern psa_status_t psa_to_pk_rsa_errors[16];
extern const psa_status_t psa_to_pk_rsa_errors[16];
#endif
#if defined(MBEDTLS_USE_PSA_CRYPTO) && \
defined(PSA_WANT_KEY_TYPE_ECC_PUBLIC_KEY)
extern psa_status_t psa_to_pk_ecdsa_errors[14];
extern const psa_status_t psa_to_pk_ecdsa_errors[14];
#endif
/* Generic fallback function for error translation,
* when the received state was not module-specific. */
int psa_generic_status_to_mbedtls(psa_status_t status);
/* This function iterates over provided local error translations,
* and if no match was found - calls the fallback error translation function. */
int psa_status_to_mbedtls(psa_status_t status,
psa_status_t *local_translations,
const psa_status_t *local_translations,
size_t local_errors_num,
int (*fallback_f)(psa_status_t));
/* The second out of three-stage error handling functions of the pk module,
* acts as a fallback after RSA / ECDSA error translation, and if no match
* is found, it itself calls psa_generic_status_to_mbedtls. */
int psa_pk_status_to_mbedtls(psa_status_t status);
/* Utility macro to shorten the defines of error translator in modules. */
#define PSA_TO_MBEDTLS_ERR_LIST(status, error_list, fallback_f) \
psa_status_to_mbedtls(status, error_list, sizeof(error_list), fallback_f)

12
library/psa_util.c
View file

@ -34,7 +34,7 @@
/* PSA_SUCCESS is kept at the top of each error table since
* it's the most common status when everything functions properly. */
#if !defined(MBEDTLS_MD_C) || !defined(MBEDTLS_MD5_C)
psa_status_t psa_to_md_errors[] =
const psa_status_t psa_to_md_errors[] =
{
PSA_SUCCESS, 0,
PSA_ERROR_NOT_SUPPORTED, MBEDTLS_ERR_MD_FEATURE_UNAVAILABLE,
@ -43,7 +43,7 @@ psa_status_t psa_to_md_errors[] =
};
#endif
#if defined(MBEDTLS_LMS_C)
psa_status_t psa_to_lms_errors[] =
const psa_status_t psa_to_lms_errors[] =
{
PSA_SUCCESS, 0,
PSA_ERROR_BUFFER_TOO_SMALL, MBEDTLS_ERR_LMS_BUFFER_TOO_SMALL,
@ -51,7 +51,7 @@ psa_status_t psa_to_lms_errors[] =
};
#endif
#if defined(MBEDTLS_USE_PSA_CRYPTO) || defined(MBEDTLS_SSL_PROTO_TLS1_3)
psa_status_t psa_to_ssl_errors[] =
const psa_status_t psa_to_ssl_errors[] =
{
PSA_SUCCESS, 0,
PSA_ERROR_INSUFFICIENT_MEMORY, MBEDTLS_ERR_SSL_ALLOC_FAILED,
@ -65,7 +65,7 @@ psa_status_t psa_to_ssl_errors[] =
#if defined(PSA_WANT_KEY_TYPE_RSA_PUBLIC_KEY) || \
defined(PSA_WANT_KEY_TYPE_RSA_KEY_PAIR)
psa_status_t psa_to_pk_rsa_errors[] =
const psa_status_t psa_to_pk_rsa_errors[] =
{
PSA_SUCCESS, 0,
PSA_ERROR_NOT_PERMITTED, MBEDTLS_ERR_RSA_BAD_INPUT_DATA,
@ -80,7 +80,7 @@ psa_status_t psa_to_pk_rsa_errors[] =
#if defined(MBEDTLS_USE_PSA_CRYPTO) && \
defined(PSA_WANT_KEY_TYPE_ECC_PUBLIC_KEY)
psa_status_t psa_to_pk_ecdsa_errors[] =
const psa_status_t psa_to_pk_ecdsa_errors[] =
{
PSA_SUCCESS, 0,
PSA_ERROR_NOT_PERMITTED, MBEDTLS_ERR_ECP_BAD_INPUT_DATA,
@ -111,7 +111,7 @@ int psa_generic_status_to_mbedtls(psa_status_t status)
}
int psa_status_to_mbedtls(psa_status_t status,
psa_status_t *local_translations,
const psa_status_t *local_translations,
size_t local_errors_size,
int (*fallback_f)(psa_status_t))
{