（两百零七）（两百零七）Android Q wifi config开机加载流程开机加载流程
目录目录
1.思路
2.流程梳理
3. 总结
1.思路思路
wifi config在手机中是以文件形式保存的，那开机的时候手机必然要解析文件成对应的config对象，梳理下流程
2.流程梳理流程梳理
ClientModeImpl
case CMD_BOOT_COMPLETED:
// get other services that we need to manage
getAdditionalWifiServiceInterfaces();
new MemoryStoreImpl(mContext, mWifiInjector, mWifiScoreCard).start();
if (!mWifiConfigManager.loadFromStore()) {
Log.e(TAG, "Failed to load from config store");
}
registerNetworkFactory();
break;
WifiConfigManager
/**
* Read the config store and load the in-memory lists from the store data retrieved and sends
* out the networks changed broadcast.
*
* This reads all the network configurations from:
* 1. Shared WifiConfigStore.xml
* 2. User WifiConfigStore.xml
*
* @return true on success or not needed (fresh install), false otherwise.
*/
public boolean loadFromStore() {
// If the user unlock comes in before we load from store, which means the user store have
// not been setup yet for the current user. Setup the user store before the read so that
// configurations for the current user will also being loaded.
if (mDeferredUserUnlockRead) {
Log.i(TAG, "Handling user unlock before loading from store.");
List userStoreFiles =
WifiConfigStore.createUserFiles(mCurrentUserId);
if (userStoreFiles == null) {
Log.wtf(TAG, "Failed to create user store files");
return false;
}
mWifiConfigStore.setUserStores(userStoreFiles);
mDeferredUserUnlockRead = false;
}
try {
mWifiConfigStore.read();
} catch (IOException e) {
Log.wtf(TAG, "Reading from new store failed. All saved networks are lost!", e);
return false;
} catch (XmlPullParserException e) {
Log.wtf(TAG, "XML deserialization of store failed. All saved networks are lost!", e);
return false;
}
loadInternalData(mNetworkListSharedStoreData.getConfigurations(),
mNetworkListUserStoreData.getConfigurations(),
mDeletedEphemeralSsidsStoreData.getSsidToTimeMap(),
mRandomizedMacStoreData.getMacMapping());
return true;
}
WifiConfigStore
/**
* API to read the store data from the config stores.
* The method reads the user specific configurations from user specific config store and the
* shared configurations from the shared config store.
*/
public void read() throws XmlPullParserException, IOException {
// Reset both share and user store data.
resetStoreData(mSharedStore);
if (mUserStores != null) {
for (StoreFile userStoreFile : mUserStores) {
resetStoreData(userStoreFile);
}
}
long readStartTime = mClock.getElapsedSinceBootMillis();
byte[] sharedDataBytes = mSharedStore.readRawData();
deserializeData(sharedDataBytes, mSharedStore);
if (mUserStores != null) {
for (StoreFile userStoreFile : mUserStores) {
byte[] userDataBytes = userStoreFile.readRawData();
deserializeData(userDataBytes, userStoreFile);
}
}
long readTime = mClock.getElapsedSinceBootMillis() - readStartTime;
try {
mWifiMetrics.noteWifiConfigStoreReadDuration(toIntExact(readTime));
} catch (ArithmeticException e) {
// Silently ignore on any overflow errors.
}
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