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// This file was extracted from the TCG Published
// Trusted Platform Module Library
// Part 3: Commands
// Family "2.0"
// Level 00 Revision 01.16
// October 30, 2014
#include "InternalRoutines.h"
#include "NV_Write_fp.h"
#include "NV_spt_fp.h"
//
//
// Error Returns Meaning
//
// TPM_RC_ATTRIBUTES Index referenced by nvIndex has either TPMA_NV_BITS,
// TPMA_NV_COUNTER, or TPMA_NV_EVENT attribute SET
// TPM_RC_NV_AUTHORIZATION the authorization was valid but the authorizing entity (authHandle) is
// not allowed to write to the Index referenced by nvIndex
// TPM_RC_NV_LOCKED Index referenced by nvIndex is write locked
// TPM_RC_NV_RANGE if TPMA_NV_WRITEALL is SET then the write is not the size of the
// Index referenced by nvIndex; otherwise, the write extends beyond the
// limits of the Index
//
TPM_RC
TPM2_NV_Write(
NV_Write_In *in // IN: input parameter list
)
{
NV_INDEX nvIndex;
TPM_RC result;
// Input Validation
// Get NV index info
NvGetIndexInfo(in->nvIndex, &nvIndex);
// common access checks. NvWrtieAccessChecks() may return
// TPM_RC_NV_AUTHORIZATION or TPM_RC_NV_LOCKED
result = NvWriteAccessChecks(in->authHandle, in->nvIndex);
if(result != TPM_RC_SUCCESS)
return result;
// Bits index, extend index or counter index may not be updated by
// TPM2_NV_Write
if( nvIndex.publicArea.attributes.TPMA_NV_COUNTER == SET
|| nvIndex.publicArea.attributes.TPMA_NV_BITS == SET
|| nvIndex.publicArea.attributes.TPMA_NV_EXTEND == SET)
return TPM_RC_ATTRIBUTES;
// Too much data
if((in->data.t.size + in->offset) > nvIndex.publicArea.dataSize)
return TPM_RC_NV_RANGE;
// If this index requires a full sized write, make sure that input range is
// full sized
if( nvIndex.publicArea.attributes.TPMA_NV_WRITEALL == SET
&& in->data.t.size < nvIndex.publicArea.dataSize)
return TPM_RC_NV_RANGE;
// Internal Data Update
// Perform the write. This called routine will SET the TPMA_NV_WRITTEN
// attribute if it has not already been SET. If NV isn't available, an error
// will be returned.
return NvWriteIndexData(in->nvIndex, &nvIndex, in->offset,
in->data.t.size, in->data.t.buffer);
}
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