1 /* 2 * Copyright 2019, The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #include "trusty_time_stamper.h" 18 19 #include <limits> 20 21 #include <inttypes.h> 22 #include <stdio.h> 23 #include <trusty/time.h> 24 25 #include <trusty_log.h> 26 27 #define TLOG_TAG "confirmationui" 28 29 namespace monotonic_time_stamper { 30 now()31TimeStamp now() { 32 int rv; 33 int64_t secure_time_ns = 0; 34 rv = trusty_gettime(0, &secure_time_ns); 35 if (rv || secure_time_ns < 0) { 36 TLOGE("Error getting time. Error: %d, time: %" PRIu64, rv, 37 secure_time_ns); 38 return 0; // 0 is considered invalid. see TimeStamp::isOk() 39 } 40 return static_cast<uint64_t>(secure_time_ns) / 1000000; 41 } 42 43 } // namespace monotonic_time_stamper 44