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authorThe Android Open Source Project <initial-contribution@android.com>2009-03-03 19:28:42 -0800
committerThe Android Open Source Project <initial-contribution@android.com>2009-03-03 19:28:42 -0800
commit88b607994a148f4af5bffee163e39ce8296750c6 (patch)
treefa249ff843e976cf034f2029437d3362a8396321 /tools/check_prereq/check_prereq.c
parent05806d7af62e07c6225b2e7103a1b115ecf6c9ad (diff)
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auto import from //depot/cupcake/@135843
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diff --git a/tools/check_prereq/check_prereq.c b/tools/check_prereq/check_prereq.c
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+/*
+ * Copyright (C) 2009 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/system_properties.h>
+#include <cutils/properties.h>
+
+// Compare the timestamp of the new build (passed on the command line)
+// against the current value of ro.build.date.utc. Exit successfully
+// if the new build is newer than the current build (or if the
+// timestamps are the same).
+int main(int argc, char** argv) {
+ if (argc != 2) {
+ usage:
+ fprintf(stderr, "usage: %s <timestamp>\n", argv[0]);
+ return 2;
+ }
+
+ char value[PROPERTY_VALUE_MAX];
+ char* default_value = "0";
+
+ property_get("ro.build.date.utc", value, default_value);
+
+ long current = strtol(value, NULL, 10);
+ char* end;
+ long install = strtol(argv[1], &end, 10);
+
+ printf("current build time: [%ld] new build time: [%ld]\n",
+ current, install);
+
+ return (*end == 0 && current > 0 && install >= current) ? 0 : 1;
+}