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Clarify documentation of MBEDTLS_MPS_STATE_VALIDATION

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Signed-off-by: Hanno Becker <hanno.becker@arm.com>
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Hanno Becker 2021-02-22 15:09:03 +00:00
parent 53314aade1
commit 6e3484e123
1 changed files with 9 additions and 6 deletions
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15
library/mps_common.h
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@ -61,12 +61,15 @@
* non-sensical calls or not, and that's what this option is about:
*
* This option determines whether the expected abstract state
* is part of the API preconditions or not. If it is, the function's
* behavior is undefined if the abstract state is not as expected.
* If it is set, API is required to fail gracefully with error
* #MBEDTLS_ERR_MPS_OPERATION_UNEXPECTED, and without changing the abstract
* state of the input context, if the abstract state is unexpected but
* all other preconditions are satisfied.
* is part of the API preconditions or not: If the option is set,
* then the abstract state is not part of the precondition and is
* thus required to be validated by the implementation. If an unexpected
* abstract state is encountered, the implementation must fail gracefully
* with error #MBEDTLS_ERR_MPS_OPERATION_UNEXPECTED.
* Conversely, if this option is not set, then the expected abstract state
* is included in the preconditions of the respective API calls, and
* an implementation's behaviour is undefined if the abstract state is
* not as expected.
*
* For example: Enabling this makes mps_l2_read_done() fail if
* no incoming record is currently open; disabling this would