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Add boilerplate to recover a transaction during init

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This commit is contained in:
Gilles Peskine 2019-07-25 17:52:59 +02:00
parent 4aea1036c6
commit f9bb29ec26
1 changed files with 28 additions and 1 deletions
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29
library/psa_crypto.c
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@ -5782,6 +5782,30 @@ void mbedtls_psa_crypto_free( void )
#endif /* MBEDTLS_PSA_CRYPTO_SE_C */
}
#if defined(PSA_CRYPTO_STORAGE_HAS_TRANSACTIONS)
/** Recover a transaction that was interrupted by a power failure.
*
* This function is called during initialization, before psa_crypto_init()
* returns. If this function returns a failure status, the initialization
* fails.
*/
static psa_status_t psa_crypto_recover_transaction(
const psa_crypto_transaction_t *transaction )
{
switch( transaction->unknown.type )
{
case PSA_CRYPTO_TRANSACTION_CREATE_KEY:
case PSA_CRYPTO_TRANSACTION_DESTROY_KEY:
/* TOnogrepDO - fall through to the failure case until this
* is implemented */
default:
/* We found an unsupported transaction in the storage.
* We don't know what state the storage is in. Give up. */
return( PSA_ERROR_STORAGE_FAILURE );
}
}
#endif /* PSA_CRYPTO_STORAGE_HAS_TRANSACTIONS */
psa_status_t psa_crypto_init( void )
{
psa_status_t status;
@ -5819,7 +5843,10 @@ psa_status_t psa_crypto_init( void )
status = psa_crypto_load_transaction( );
if( status == PSA_SUCCESS )
{
/*TOnogrepDO: complete or abort the transaction*/
status = psa_crypto_recover_transaction( &psa_crypto_transaction );
if( status != PSA_SUCCESS )
goto exit;
status = psa_crypto_stop_transaction( );
}
else if( status == PSA_ERROR_DOES_NOT_EXIST )
{