Uses TPM return codes.

tests/rollback_index_mock.c

 /* Copyright (c) 2010 The Chromium OS Authors. All rights reserved.
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  *
  * Mock rollback index library for testing.
  */
 
 #include "rollback_index.h"
 
 #include <stdint.h>
 #include <stdio.h>
 
 uint16_t g_firmware_key_version = 0;
 uint16_t g_firmware_version = 0;
 uint16_t g_kernel_key_version = 0;
 uint16_t g_kernel_version = 0;
 
-void SetupTPM(void) {
+int SetupTPM(void) {
 #ifndef NDEBUG
   debug("Rollback Index Library Mock: TPM initialized.\n");
 #endif
+  return 0;
 }
 
-void GetStoredVersions(int type, uint16_t* key_version, uint16_t* version) {
+int GetStoredVersions(int type, uint16_t* key_version, uint16_t* version) {
   switch (type) {
     case FIRMWARE_VERSIONS:
       *key_version = g_firmware_key_version;
       *version = g_firmware_version;
       break;
     case KERNEL_VERSIONS:
       *key_version = g_kernel_key_version;
       *version = g_kernel_version;
       break;
   }
+  return 0;
 }
 
 int WriteStoredVersions(int type, uint16_t key_version, uint16_t version) {
   switch (type) {
     case FIRMWARE_VERSIONS:
       g_firmware_key_version = key_version;
       g_firmware_version = version;
       break;
     case KERNEL_VERSIONS:
       g_kernel_key_version = key_version;
       g_kernel_version = version;
       break;
   }
 #ifndef NDEBUG
   debug("Rollback Index Library Mock: Stored Versions written.\n");
 #endif
-  return 1;
+  return 0;
 }
 
-void LockFirmwareVersions() {
+int LockFirmwareVersions() {
 #ifndef NDEBUG
   debug("Rollback Index Library Mock: Firmware Versions Locked.\n");
 #endif
+  return 0;
 }
-void LockKernelVersionsByLockingPP() {
+int LockKernelVersionsByLockingPP() {
 #ifndef NDEBUG
   debug("Rollback Index Library Mock: Kernel Versions Locked.\n");
 #endif
+  return 0;
 }