SYNOPSIS

#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);

DESCRIPTION

Tspi_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.

PARAMETERS

hTPM

The hTPM parameter is used to specify the handle of the TPM object.

ulDirIndex

The 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).

ulDirDataLength

The ulDirDataLength parameter is the length in bytes of the rgbDirData parameter.

rgbDirData

The rgbDirData parameter is a pointer to memory containing the data to be written to the DIR.

RETURN CODES

Tspi_TPM_DirWrite returns TSS_SUCCESS on success, otherwise one of the following values is returned:

TSS_E_INVALID_HANDLE

hTPM is not a valid handle.

TSS_E_INTERNAL_ERROR

An internal SW error has been detected.

TSS_E_BAD_PARAMETER

One or more parameters is bad.

CONFORMING TO

Tspi_TPM_DirWrite conforms to the Trusted Computing Group Software Specification version 1.1 Golden