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_UndefineSpace_fp.h" |
| 10 | // |
| 11 | // |
| 12 | // Error Returns Meaning |
| 13 | // |
| 14 | // TPM_RC_ATTRIBUTES TPMA_NV_POLICY_DELETE is SET in the Index referenced by |
| 15 | // nvIndex so this command may not be used to delete this Index (see |
| 16 | // TPM2_NV_UndefineSpaceSpecial()) |
| 17 | // TPM_RC_NV_AUTHORIZATION attempt to use ownerAuth to delete an index created by the platform |
| 18 | // |
| 19 | TPM_RC |
| 20 | TPM2_NV_UndefineSpace( |
| 21 | NV_UndefineSpace_In *in // IN: input parameter list |
| 22 | ) |
| 23 | { |
| 24 | TPM_RC result; |
| 25 | NV_INDEX nvIndex; |
| 26 | |
| 27 | // The command needs NV update. Check if NV is available. |
| 28 | // A TPM_RC_NV_UNAVAILABLE or TPM_RC_NV_RATE error may be returned at |
| 29 | // this point |
| 30 | result = NvIsAvailable(); |
| 31 | if(result != TPM_RC_SUCCESS) return result; |
| 32 | |
| 33 | // Input Validation |
| 34 | |
| 35 | // Get NV index info |
| 36 | NvGetIndexInfo(in->nvIndex, &nvIndex); |
| 37 | |
| 38 | // This command can't be used to delete an index with TPMA_NV_POLICY_DELETE SET |
| 39 | if(SET == nvIndex.publicArea.attributes.TPMA_NV_POLICY_DELETE) |
| 40 | return TPM_RC_ATTRIBUTES + RC_NV_UndefineSpace_nvIndex; |
| 41 | |
| 42 | // The owner may only delete an index that was defined with ownerAuth. The |
| 43 | // platform may delete an index that was created with either auth. |
| 44 | if( in->authHandle == TPM_RH_OWNER |
| 45 | && nvIndex.publicArea.attributes.TPMA_NV_PLATFORMCREATE == SET) |
| 46 | return TPM_RC_NV_AUTHORIZATION; |
| 47 | |
| 48 | // Internal Data Update |
| 49 | |
| 50 | // Call implementation dependent internal routine to delete NV index |
| 51 | NvDeleteEntity(in->nvIndex); |
| 52 | |
| 53 | return TPM_RC_SUCCESS; |
| 54 | } |