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CentOS 7.0 - man page for tspi_tpm_dirread (centos section 3)

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 prgbDirData 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 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_DirRead conforms to the Trusted Computing Group  Software  Specification  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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