Fapi_PcrRead

NAME

Fapi_PcrRead − Fapi_PcrRead

SYNOPSIS

Functions

TSS2_RC Fapi_PcrRead (FAPI_CONTEXT *context, uint32_t pcrIndex, uint8_t **pcrValue, size_t *pcrValueSize, char **pcrLog)
TSS2_RC Fapi_PcrRead_Async (FAPI_CONTEXT *context, uint32_t pcrIndex)
TSS2_RC Fapi_PcrRead_Finish (FAPI_CONTEXT *context, uint8_t **pcrValue, size_t *pcrValueSize, char **pcrLog)

Detailed Description

FAPI functions to invoke PcrRead either as one-call or in an asynchronous manner.

Function Documentation

Fapi_PcrRead (FAPI_CONTEXT * context, uint32_t pcrIndex, uint8_t ** pcrValue, size_t * pcrValueSize, char ** pcrLog)
One-Call function for Fapi_PcrRead

Reads from a given PCR and returns the value and the event log.

Parameters

context The FAPI_CONTEXT
pcrIndex
The index of the PCR to read
pcrValue
The value of the PCR. May be NULL
pcrValueSize
The size of value in bytes. May be NULL
pcrLog
The PCR log. May be NULL

Return values

TSS2_RC_SUCCESS if the function call was a success.
TSS2_FAPI_RC_BAD_REFERENCE
if context, pcrValue or pcrValueSize is NULL.
TSS2_FAPI_RC_BAD_CONTEXT
if context corruption is detected.
TSS2_FAPI_RC_BAD_VALUE
if pcrIndex is invalid.
TSS2_FAPI_RC_BAD_SEQUENCE
if the context has an asynchronous operation already pending.
TSS2_FAPI_RC_IO_ERROR
if the data cannot be saved.
TSS2_FAPI_RC_MEMORY
if the FAPI cannot allocate enough memory for internal operations or return parameters.
TSS2_FAPI_RC_NO_TPM
if FAPI was initialized in no-TPM-mode via its config file.
TSS2_FAPI_RC_TRY_AGAIN
if an I/O operation is not finished yet and this function needs to be called again.
TSS2_FAPI_RC_AUTHORIZATION_UNKNOWN
if a required authorization callback is not set.
TSS2_FAPI_RC_AUTHORIZATION_FAILED
if the authorization attempt fails.
TSS2_FAPI_RC_GENERAL_FAILURE
if an internal error occurred.
TSS2_FAPI_RC_POLICY_UNKNOWN
if policy search for a certain policy digest was not successful.
TSS2_FAPI_RC_NO_CERT
if an error did occur during certificate downloading.
TSS2_FAPI_RC_PATH_NOT_FOUND
if a FAPI object path was not found during authorization.
TSS2_FAPI_RC_KEY_NOT_FOUND
if a key was not found.
TSS2_ESYS_RC_*
possible error codes of ESAPI.

Fapi_PcrRead_Async (FAPI_CONTEXT * context, uint32_t pcrIndex)
Asynchronous function for Fapi_PcrRead

Reads from a given PCR and returns the value and the event log.

Call Fapi_PcrRead_Finish to finish the execution of this command.

Parameters

context The FAPI_CONTEXT
pcrIndex
The index of the PCR to read

Return values

TSS2_RC_SUCCESS if the function call was a success.
TSS2_FAPI_RC_BAD_REFERENCE
if context is NULL.
TSS2_FAPI_RC_BAD_CONTEXT
if context corruption is detected.
TSS2_FAPI_RC_BAD_VALUE
if pcrIndex is invalid.
TSS2_FAPI_RC_BAD_SEQUENCE
if the context has an asynchronous operation already pending.
TSS2_FAPI_RC_IO_ERROR
if the data cannot be saved.
TSS2_FAPI_RC_MEMORY
if the FAPI cannot allocate enough memory for internal operations or return parameters.
TSS2_FAPI_RC_NO_TPM
if FAPI was initialized in no-TPM-mode via its config file.
TSS2_ESYS_RC_*
possible error codes of ESAPI.

Fapi_PcrRead_Finish (FAPI_CONTEXT * context, uint8_t ** pcrValue, size_t * pcrValueSize, char ** pcrLog)
Asynchronous finish function for Fapi_PcrRead

This function should be called after a previous Fapi_PcrRead_Async.

Parameters

context The FAPI_CONTEXT
pcrValue
The value of the PCR. May be NULL
pcrValueSize
The size of value in bytes. May be NULL
pcrLog
The PCR log. May be NULL

Return values

TSS2_RC_SUCCESS if the function call was a success.
TSS2_FAPI_RC_BAD_REFERENCE
if context, pcrValue or pcrValueSize is NULL.
TSS2_FAPI_RC_BAD_CONTEXT
if context corruption is detected.
TSS2_FAPI_RC_BAD_SEQUENCE
if the context has an asynchronous operation already pending.
TSS2_FAPI_RC_IO_ERROR
if the data cannot be saved.
TSS2_FAPI_RC_MEMORY
if the FAPI cannot allocate enough memory for internal operations or return parameters.
TSS2_FAPI_RC_TRY_AGAIN
if the asynchronous operation is not yet complete. Call this function again later.
TSS2_FAPI_RC_BAD_VALUE
if an invalid value was passed into the function.
TSS2_ESYS_RC_*
possible error codes of ESAPI.

Author

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