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