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 "SetCommandCodeAuditStatus_fp.h" |
| 10 | TPM_RC |
| 11 | TPM2_SetCommandCodeAuditStatus( |
| 12 | SetCommandCodeAuditStatus_In *in // IN: input parameter list |
| 13 | ) |
| 14 | { |
| 15 | TPM_RC result; |
| 16 | UINT32 i; |
| 17 | BOOL changed = FALSE; |
| 18 | |
| 19 | // The command needs NV update. Check if NV is available. |
| 20 | // A TPM_RC_NV_UNAVAILABLE or TPM_RC_NV_RATE error may be returned at |
| 21 | // this point |
| 22 | result = NvIsAvailable(); |
| 23 | if(result != TPM_RC_SUCCESS) |
| 24 | return result; |
| 25 | |
| 26 | // Internal Data Update |
| 27 | |
| 28 | // Update hash algorithm |
| 29 | if( in->auditAlg != TPM_ALG_NULL |
| 30 | && in->auditAlg != gp.auditHashAlg) |
| 31 | { |
| 32 | // Can't change the algorithm and command list at the same time |
| 33 | if(in->setList.count != 0 || in->clearList.count != 0) |
| 34 | return TPM_RC_VALUE + RC_SetCommandCodeAuditStatus_auditAlg; |
| 35 | |
| 36 | // Change the hash algorithm for audit |
| 37 | gp.auditHashAlg = in->auditAlg; |
| 38 | |
| 39 | // Set the digest size to a unique value that indicates that the digest |
| 40 | // algorithm has been changed. The size will be cleared to zero in the |
| 41 | // command audit processing on exit. |
| 42 | gr.commandAuditDigest.t.size = 1; |
| 43 | |
| 44 | // Save the change of command audit data (this sets g_updateNV so that NV |
| 45 | // will be updated on exit.) |
| 46 | NvWriteReserved(NV_AUDIT_HASH_ALG, &gp.auditHashAlg); |
| 47 | |
| 48 | } else { |
| 49 | |
| 50 | // Process set list |
| 51 | for(i = 0; i < in->setList.count; i++) |
| 52 | |
| 53 | // If change is made in CommandAuditSet, set changed flag |
| 54 | if(CommandAuditSet(in->setList.commandCodes[i])) |
| 55 | changed = TRUE; |
| 56 | |
| 57 | // Process clear list |
| 58 | for(i = 0; i < in->clearList.count; i++) |
| 59 | // If change is made in CommandAuditClear, set changed flag |
| 60 | if(CommandAuditClear(in->clearList.commandCodes[i])) |
| 61 | changed = TRUE; |
| 62 | |
| 63 | // if change was made to command list, update NV |
| 64 | if(changed) |
| 65 | // this sets g_updateNV so that NV will be updated on exit. |
| 66 | NvWriteReserved(NV_AUDIT_COMMANDS, &gp.auditComands); |
| 67 | } |
| 68 | |
| 69 | return TPM_RC_SUCCESS; |
| 70 | } |