ESAPI function to invoke the TPM2_ContextSave command either as a one-call or in an asynchronous manner.
◆ Esys_ContextSave()
TSS2_RC Esys_ContextSave |
( |
ESYS_CONTEXT * |
esysContext, |
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ESYS_TR |
saveHandle, |
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TPMS_CONTEXT ** |
context |
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) |
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One-Call function for TPM2_ContextSave
This function invokes the TPM2_ContextSave command in a one-call variant. This means the function will block until the TPM response is available. All input parameters are const. The memory for non-simple output parameters is allocated by the function implementation.
- Parameters
-
[in,out] | esysContext | The ESYS_CONTEXT. |
[in] | saveHandle | Handle of the resource to save. |
[out] | context | . (callee-allocated) |
- Return values
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TSS2_RC_SUCCESS | if the function call was a success. |
TSS2_ESYS_RC_BAD_REFERENCE | if the esysContext or required input pointers or required output handle references are NULL. |
TSS2_ESYS_RC_BAD_CONTEXT | if esysContext corruption is detected. |
TSS2_ESYS_RC_MEMORY | if the ESAPI cannot allocate enough memory for internal operations or return parameters. |
TSS2_ESYS_RC_BAD_SEQUENCE | if the context has an asynchronous operation already pending. |
TSS2_ESYS_RC_INSUFFICIENT_RESPONSE | if the TPM's response does not at least contain the tag, response length, and response code. |
TSS2_ESYS_RC_MALFORMED_RESPONSE | if the TPM's response is corrupted. |
TSS2_ESYS_RC_RSP_AUTH_FAILED | if the response HMAC from the TPM did not verify. |
TSS2_ESYS_RC_BAD_TR | if any of the ESYS_TR objects are unknown to the ESYS_CONTEXT or are of the wrong type or if required ESYS_TR objects are ESYS_TR_NONE. |
TSS2_RCs | produced by lower layers of the software stack may be returned to the caller unaltered unless handled internally. |
◆ Esys_ContextSave_Async()
Asynchronous function for TPM2_ContextSave
This function invokes the TPM2_ContextSave command in a asynchronous variant. This means the function will return as soon as the command has been sent downwards the stack to the TPM. All input parameters are const. In order to retrieve the TPM's response call Esys_ContextSave_Finish.
- Parameters
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[in,out] | esysContext | The ESYS_CONTEXT. |
[in] | saveHandle | Handle of the resource to save. |
- Return values
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ESYS_RC_SUCCESS | if the function call was a success. |
TSS2_ESYS_RC_BAD_REFERENCE | if the esysContext or required input pointers or required output handle references are NULL. |
TSS2_ESYS_RC_BAD_CONTEXT | if esysContext corruption is detected. |
TSS2_ESYS_RC_MEMORY | if the ESAPI cannot allocate enough memory for internal operations or return parameters. |
TSS2_RCs | produced by lower layers of the software stack may be returned to the caller unaltered unless handled internally. |
TSS2_ESYS_RC_BAD_TR | if any of the ESYS_TR objects are unknown to the ESYS_CONTEXT or are of the wrong type or if required ESYS_TR objects are ESYS_TR_NONE. |
◆ Esys_ContextSave_Finish()
TSS2_RC Esys_ContextSave_Finish |
( |
ESYS_CONTEXT * |
esysContext, |
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TPMS_CONTEXT ** |
context |
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) |
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Asynchronous finish function for TPM2_ContextSave
This function returns the results of a TPM2_ContextSave command invoked via Esys_ContextSave_Finish. All non-simple output parameters are allocated by the function's implementation. NULL can be passed for every output parameter if the value is not required.
- Parameters
-
[in,out] | esysContext | The ESYS_CONTEXT. |
[out] | context | . (callee-allocated) |
- Return values
-
TSS2_RC_SUCCESS | on success |
ESYS_RC_SUCCESS | if the function call was a success. |
TSS2_ESYS_RC_BAD_REFERENCE | if the esysContext or required input pointers or required output handle references are NULL. |
TSS2_ESYS_RC_BAD_CONTEXT | if esysContext corruption is detected. |
TSS2_ESYS_RC_MEMORY | if the ESAPI cannot allocate enough memory for internal operations or return parameters. |
TSS2_ESYS_RC_BAD_SEQUENCE | if the context has an asynchronous operation already pending. |
TSS2_ESYS_RC_TRY_AGAIN | if the timeout counter expires before the TPM response is received. |
TSS2_ESYS_RC_INSUFFICIENT_RESPONSE | if the TPM's response does not at least contain the tag, response length, and response code. |
TSS2_ESYS_RC_RSP_AUTH_FAILED | if the response HMAC from the TPM did not verify. |
TSS2_ESYS_RC_MALFORMED_RESPONSE | if the TPM's response is corrupted. |
TSS2_RCs | produced by lower layers of the software stack may be returned to the caller unaltered unless handled internally. |