Vadim Bendebury | 5679752 | 2015-05-20 10:32:25 -0700 | [diff] [blame] | 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_Read_fp.h" |
| 10 | #include "NV_spt_fp.h" |
| 11 | // |
| 12 | // |
| 13 | // Error Returns Meaning |
| 14 | // |
| 15 | // TPM_RC_NV_AUTHORIZATION the authorization was valid but the authorizing entity (authHandle) is |
| 16 | // not allowed to read from the Index referenced by nvIndex |
| 17 | // TPM_RC_NV_LOCKED the Index referenced by nvIndex is read locked |
| 18 | // TPM_RC_NV_RANGE read range defined by size and offset is outside the range of the |
| 19 | // Index referenced by nvIndex |
| 20 | // TPM_RC_NV_UNINITIALIZED the Index referenced by nvIndex has not been initialized (written) |
| 21 | // |
| 22 | TPM_RC |
| 23 | TPM2_NV_Read( |
| 24 | NV_Read_In *in, // IN: input parameter list |
| 25 | NV_Read_Out *out // OUT: output parameter list |
| 26 | ) |
| 27 | { |
| 28 | NV_INDEX nvIndex; |
| 29 | TPM_RC result; |
| 30 | |
| 31 | // Input Validation |
| 32 | |
| 33 | // Get NV index info |
| 34 | NvGetIndexInfo(in->nvIndex, &nvIndex); |
| 35 | |
| 36 | // Common read access checks. NvReadAccessChecks() returns |
| 37 | // TPM_RC_NV_AUTHORIZATION, TPM_RC_NV_LOCKED, or TPM_RC_NV_UNINITIALIZED |
| 38 | // error may be returned at this point |
| 39 | result = NvReadAccessChecks(in->authHandle, in->nvIndex); |
| 40 | if(result != TPM_RC_SUCCESS) |
| 41 | return result; |
| 42 | |
| 43 | // Too much data |
| 44 | if((in->size + in->offset) > nvIndex.publicArea.dataSize) |
| 45 | return TPM_RC_NV_RANGE; |
| 46 | |
| 47 | // Command Output |
| 48 | |
| 49 | // Set the return size |
| 50 | out->data.t.size = in->size; |
| 51 | // Perform the read |
| 52 | NvGetIndexData(in->nvIndex, &nvIndex, in->offset, in->size, out->data.t.buffer); |
| 53 | |
| 54 | return TPM_RC_SUCCESS; |
| 55 | } |