2 * Copyright (C) 2009 The Android Open Source Project
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
8 * http://www.apache.org/licenses/LICENSE-2.0
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.
19 #include <sys/system_properties.h>
20 #include <cutils/properties.h>
22 // Compare the timestamp of the new build (passed on the command line)
23 // against the current value of ro.build.date.utc. Exit successfully
24 // if the new build is newer than the current build (or if the
25 // timestamps are the same).
26 int main(int argc, char** argv) {
29 fprintf(stderr, "usage: %s <timestamp>\n", argv[0]);
33 char value[PROPERTY_VALUE_MAX];
34 char* default_value = "0";
36 property_get("ro.build.date.utc", value, default_value);
38 long current = strtol(value, NULL, 10);
40 long install = strtol(argv[1], &end, 10);
42 printf("current build time: [%ld] new build time: [%ld]\n",
45 return (*end == 0 && current > 0 && install >= current) ? 0 : 1;