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Pass a writable pointer to the persistent data when needed

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Most driver methods are not allowed to modify the persistent data, so
the driver context structure contains a const pointer to it. Pass a
non-const pointer to the persstent data to the driver methods that
need it: init, allocate, destroy.
This commit is contained in:
Gilles Peskine 2019-07-12 23:34:20 +02:00
parent f2223c868d
commit 94cc42c28f
1 changed files with 9 additions and 0 deletions
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9
include/psa/crypto_se_driver.h
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@ -97,6 +97,8 @@ typedef struct {
/** \brief A driver initialization function.
*
* \param[in,out] drv_context The driver context structure.
* \param[in,out] persistent_data A pointer to the persistent data
* that allows writing.
* \param lifetime The lifetime value for which this driver
* is registered.
*
@ -109,6 +111,7 @@ typedef struct {
* The core will NOT update the persistent data in storage.
*/
typedef psa_status_t (*psa_drv_se_init_t)(psa_drv_se_context_t *drv_context,
void *persistent_data,
psa_key_lifetime_t lifetime);
/** An internal designation of a key slot between the core part of the
@ -787,6 +790,8 @@ typedef struct psa_key_attributes_s psa_key_attributes_t;
/** \brief A function that allocates a slot for a key.
*
* \param[in,out] drv_context The driver context structure.
* \param[in,out] persistent_data A pointer to the persistent data
* that allows writing.
* \param[in] attributes Attributes of the key.
* \param[out] key_slot Slot where the key will be stored.
* This must be a valid slot for a key of the
@ -801,6 +806,7 @@ typedef struct psa_key_attributes_s psa_key_attributes_t;
*/
typedef psa_status_t (*psa_drv_se_allocate_key_t)(
psa_drv_se_context_t *drv_context,
void *persistent_data,
const psa_key_attributes_t *attributes,
psa_key_slot_number_t *key_slot);
@ -843,6 +849,8 @@ typedef psa_status_t (*psa_drv_se_import_key_t)(psa_drv_se_context_t *drv_contex
* This function returns the specified slot to its default state.
*
* \param[in,out] drv_context The driver context structure.
* \param[in,out] persistent_data A pointer to the persistent data
* that allows writing.
* \param key_slot The key slot to erase.
*
* \retval #PSA_SUCCESS
@ -850,6 +858,7 @@ typedef psa_status_t (*psa_drv_se_import_key_t)(psa_drv_se_context_t *drv_contex
*/
typedef psa_status_t (*psa_drv_se_destroy_key_t)(
psa_drv_se_context_t *drv_context,
void *persistent_data,
psa_key_slot_number_t key_slot);
/**