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ps_utils.c
Go to the documentation of this file.
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/*
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* Copyright (c) 2017-2020, Arm Limited. All rights reserved.
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*
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*/
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#include "
ps_utils.h
"
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psa_status_t
ps_utils_check_contained_in
(uint32_t superset_size,
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uint32_t subset_offset,
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uint32_t subset_size)
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{
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/* Check that subset_offset is valid */
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if
(subset_offset > superset_size) {
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return
PSA_ERROR_INVALID_ARGUMENT
;
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}
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/* Check that subset_offset + subset_size fits in superset_size.
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* The previous check passed, so we know that subset_offset <= superset_size
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* and so the right hand side of the inequality cannot underflow.
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*/
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if
(subset_size > (superset_size - subset_offset)) {
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return
PSA_ERROR_INVALID_ARGUMENT
;
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}
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return
PSA_SUCCESS
;
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}
PSA_SUCCESS
#define PSA_SUCCESS
Definition:
crypto_values.h:35
ps_utils_check_contained_in
psa_status_t ps_utils_check_contained_in(uint32_t superset_size, uint32_t subset_offset, uint32_t subset_size)
Checks if a subset region is fully contained within a superset region.
Definition:
ps_utils.c:10
PSA_ERROR_INVALID_ARGUMENT
#define PSA_ERROR_INVALID_ARGUMENT
Definition:
crypto_values.h:116
ps_utils.h
psa_status_t
int32_t psa_status_t
Function return status.
Definition:
crypto_types.h:43
secure_fw
partitions
protected_storage
ps_utils.c
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