Installd: Introduce otapreopt
Add a tool for dexopt during OTA. The tool will use /data/ota as
an ANDROID_ROOT wrt/ the dalvik-cache, compiling a new boot image
and system apps into this directory. Other apps will be compiled
to odex files suffixed with ".b".
Bug: 25612095
Change-Id: I6ac382973f13850f6b37402a1b2330c0014b47d9
diff --git a/cmds/installd/system_properties.h b/cmds/installd/system_properties.h
new file mode 100644
index 0000000..1b5fb3a
--- /dev/null
+++ b/cmds/installd/system_properties.h
@@ -0,0 +1,89 @@
+/*
+ * Copyright (C) 2015 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.
+ */
+
+#ifndef OTAPREOPT_SYSTEM_PROPERTIES_H_
+#define OTAPREOPT_SYSTEM_PROPERTIES_H_
+
+#include <fstream>
+#include <string>
+#include <unordered_map>
+
+namespace android {
+namespace installd {
+
+// Helper class to read system properties into and manage as a string->string map.
+class SystemProperties {
+ public:
+ bool Load(const std::string& strFile) {
+ std::ifstream input_stream(strFile);
+
+ if (!input_stream.is_open()) {
+ return false;
+ }
+
+ while (!input_stream.eof()) {
+ // Read the next line.
+ std::string line;
+ getline(input_stream, line);
+
+ // Is the line empty? Simplifies the next check.
+ if (line.empty()) {
+ continue;
+ }
+
+ // Is this a comment (starts with pound)?
+ if (line[0] == '#') {
+ continue;
+ }
+
+ size_t equals_pos = line.find('=');
+ if (equals_pos == std::string::npos || equals_pos == 0) {
+ // Did not find equals sign, or it's the first character - isn't a valid line.
+ continue;
+ }
+
+ std::string key = line.substr(0, equals_pos);
+ std::string value = line.substr(equals_pos + 1,
+ line.length() - equals_pos + 1);
+
+ properties_.insert(std::make_pair(key, value));
+ }
+
+ return true;
+ }
+
+ // Look up the key in the map. Returns null if the key isn't mapped.
+ const std::string* GetProperty(const std::string& key) const {
+ auto it = properties_.find(key);
+ if (it != properties_.end()) {
+ return &it->second;
+ }
+ return nullptr;
+ }
+
+ void SetProperty(const std::string& key, const std::string& value) {
+ properties_.insert(std::make_pair(key, value));
+ }
+
+ private:
+ // The actual map.
+ std::unordered_map<std::string, std::string> properties_;
+};
+
+} // namespace installd
+} // namespace android
+
+#endif // OTAPREOPT_SYSTEM_PROPERTIES_H_