47 lines
1.4 KiB
C
47 lines
1.4 KiB
C
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/*
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* Copyright (C) 2009 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <sys/system_properties.h>
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#include <cutils/properties.h>
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// Compare the timestamp of the new build (passed on the command line)
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// against the current value of ro.build.date.utc. Exit successfully
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// if the new build is newer than the current build (or if the
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// timestamps are the same).
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int main(int argc, char** argv) {
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if (argc != 2) {
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usage:
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fprintf(stderr, "usage: %s <timestamp>\n", argv[0]);
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return 2;
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}
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char value[PROPERTY_VALUE_MAX];
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char* default_value = "0";
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property_get("ro.build.date.utc", value, default_value);
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long current = strtol(value, NULL, 10);
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char* end;
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long install = strtol(argv[1], &end, 10);
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printf("current build time: [%ld] new build time: [%ld]\n",
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current, install);
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return (*end == 0 && current > 0 && install >= current) ? 0 : 1;
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}
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