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TCG Software Stack Developer's Reference NAMETspi_TPM_DirWrite - write to a Data Integrity RegisterSYNOPSIS#include <tss/platform.h> #include <tss/tcpa_defines.h> #include <tss/tcpa_typedef.h> #include <tss/tcpa_struct.h> #include <tss/tss_typedef.h> #include <tss/tss_structs.h> #include <tss/tspi.h> TSS_RESULT Tspi_TPM_DirWrite(TSS_HTPM hTPM, UINT32 ulDirIndex, UINT32 ulDirDataLength, BYTE* rgbDirData); DESCRIPTIONTspi_TPM_DirWrite writes a data integrity register. You need to know the DIR index and data you wish to write to the DIR prior to using this command.PARAMETERShTPMThe hTPM parameter is used to specify the handle of the TPM object.ulDirIndexThe ulDirIndex parameter is the index of the DIR to write. To query the TPM for the number of DIR registers it supports, use Tspi_TPM_GetCapability(3).ulDirDataLengthThe ulDirDataLength parameter is the length in bytes of the rgbDirData parameter.rgbDirDataThe rgbDirData parameter is a pointer to memory containing the data to be written to the DIR.RETURN CODESTspi_TPM_DirWrite returns TSS_SUCCESS on success, otherwise one of the following values is returned:
CONFORMING TOTspi_TPM_DirWrite conforms to the Trusted Computing Group Software Specification version 1.1 GoldenSEE ALSOTspi_TPM_GetCapability(3), Tspi_TPM_DirRead(3).
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