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Tspi_TPM_DirRead(3)	    Library Functions Manual	     Tspi_TPM_DirRead(3)

		    TCG Software Stack Developer's Reference

NAME
     Tspi_TPM_DirRead - Read a Data Integrity Register

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_DirRead(TSS_HTPM hTPM, 	    UINT32 ulDirIndex,
				 UINT32*  pulDirDataLength, BYTE** prgbDirData);

DESCRIPTION
     Tspi_TPM_DirRead  reads  a  data  integrity register. DIRs are non-volatile
     (persistent across reboots) memory areas maintained by the TPM.

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 read. To query the  TPM
     for the number of DIR registers it supports, use Tspi_TPM_GetCapability(3).

   pulDirDataLength
     The pulDirDataLength parameter receives the length in bytes of the prgbDir-
     Data parameter.

   prgbDirData
     The  prgbDirData  parameter receives a pointer to memory containing the DIR
     data.

RETURN CODES
     Tspi_TPM_DirRead returns TSS_SUCCESS on success, otherwise one of the  fol-
     lowing 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_DirRead  conforms to the Trusted Computing Group Software Specifi-
     cation version 1.1 Golden

SEE ALSO
     Tspi_TPM_GetCapability(3), Tspi_TPM_DirWrite(3).

TSS 1.1 			   2004-05-25		     Tspi_TPM_DirRead(3)

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