1 // This file was extracted from the TCG Published 2 // Trusted Platform Module Library 3 // Part 3: Commands 4 // Family "2.0" 5 // Level 00 Revision 01.16 6 // October 30, 2014 7 8 #include "InternalRoutines.h" 9 #include "NV_Write_fp.h" 10 #include "NV_spt_fp.h" 11 // 12 // 13 // Error Returns Meaning 14 // 15 // TPM_RC_ATTRIBUTES Index referenced by nvIndex has either TPMA_NV_BITS, 16 // TPMA_NV_COUNTER, or TPMA_NV_EVENT attribute SET 17 // TPM_RC_NV_AUTHORIZATION the authorization was valid but the authorizing entity (authHandle) is 18 // not allowed to write to the Index referenced by nvIndex 19 // TPM_RC_NV_LOCKED Index referenced by nvIndex is write locked 20 // TPM_RC_NV_RANGE if TPMA_NV_WRITEALL is SET then the write is not the size of the 21 // Index referenced by nvIndex; otherwise, the write extends beyond the 22 // limits of the Index 23 // 24 TPM_RC 25 TPM2_NV_Write( 26 NV_Write_In *in // IN: input parameter list 27 ) 28 { 29 NV_INDEX nvIndex; 30 TPM_RC result; 31 32 // Input Validation 33 34 // Get NV index info 35 NvGetIndexInfo(in->nvIndex, &nvIndex); 36 37 // common access checks. NvWrtieAccessChecks() may return 38 // TPM_RC_NV_AUTHORIZATION or TPM_RC_NV_LOCKED 39 result = NvWriteAccessChecks(in->authHandle, in->nvIndex); 40 if(result != TPM_RC_SUCCESS) 41 return result; 42 43 // Bits index, extend index or counter index may not be updated by 44 // TPM2_NV_Write 45 if( nvIndex.publicArea.attributes.TPMA_NV_COUNTER == SET 46 || nvIndex.publicArea.attributes.TPMA_NV_BITS == SET 47 || nvIndex.publicArea.attributes.TPMA_NV_EXTEND == SET) 48 return TPM_RC_ATTRIBUTES; 49 50 // Too much data 51 if((in->data.t.size + in->offset) > nvIndex.publicArea.dataSize) 52 return TPM_RC_NV_RANGE; 53 54 // If this index requires a full sized write, make sure that input range is 55 // full sized 56 if( nvIndex.publicArea.attributes.TPMA_NV_WRITEALL == SET 57 && in->data.t.size < nvIndex.publicArea.dataSize) 58 return TPM_RC_NV_RANGE; 59 60 // Internal Data Update 61 62 // Perform the write. This called routine will SET the TPMA_NV_WRITTEN 63 // attribute if it has not already been SET. If NV isn't available, an error 64 // will be returned. 65 return NvWriteIndexData(in->nvIndex, &nvIndex, in->offset, 66 in->data.t.size, in->data.t.buffer); 67 68 } 69
