Define a macro to construct a lifetime from persistence and location

Applications need this to combine implementation-specific values of
persistence levels and location indicators.

Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
This commit is contained in:
Gilles Peskine 2020-05-04 19:07:18 +02:00
parent aff1181d67
commit c4ee2f3a87

View file

@ -1611,6 +1611,18 @@
(PSA_KEY_LIFETIME_GET_PERSISTENCE(lifetime) == \
PSA_KEY_LIFETIME_PERSISTENCE_VOLATILE)
/** Construct a lifetime from a persistence level and a location.
*
* \param persistence The persistence level
* (value of type ::psa_key_persistence_t).
* \param location The location indicator
* (value of type ::psa_key_location_t).
*
* \return The constructed lifetime value.
*/
#define PSA_KEY_LIFETIME_FROM_PERSISTENCE_AND_LOCATION(persistence, location) \
((location) << 8 | (persistence))
/** The local storage area for persistent keys.
*
* This storage area is available on all systems that can store persistent