| /* |
| * Copyright (C) 2006 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. |
| */ |
| |
| package com.android.server.am; |
| |
| import static com.android.server.am.ActivityManagerDebugConfig.TAG_AM; |
| |
| import android.app.ContentProviderHolder; |
| import android.app.IApplicationThread; |
| import android.content.ComponentName; |
| import android.content.IContentProvider; |
| import android.content.pm.ApplicationInfo; |
| import android.content.pm.ProviderInfo; |
| import android.os.IBinder; |
| import android.os.IBinder.DeathRecipient; |
| import android.os.Process; |
| import android.os.RemoteException; |
| import android.os.UserHandle; |
| import android.util.ArrayMap; |
| import android.util.Slog; |
| |
| import com.android.internal.app.procstats.AssociationState; |
| import com.android.internal.app.procstats.ProcessStats; |
| |
| import java.io.PrintWriter; |
| import java.util.ArrayList; |
| |
| final class ContentProviderRecord implements ComponentName.WithComponentName { |
| // Maximum attempts to bring up the content provider before giving up. |
| static final int MAX_RETRY_COUNT = 3; |
| |
| final ActivityManagerService service; |
| public final ProviderInfo info; |
| final int uid; |
| final ApplicationInfo appInfo; |
| final ComponentName name; |
| final boolean singleton; |
| public IContentProvider provider; |
| public boolean noReleaseNeeded; |
| // All attached clients |
| final ArrayList<ContentProviderConnection> connections |
| = new ArrayList<ContentProviderConnection>(); |
| //final HashSet<ProcessRecord> clients = new HashSet<ProcessRecord>(); |
| // Handles for non-framework processes supported by this provider |
| ArrayMap<IBinder, ExternalProcessHandle> externalProcessTokenToHandle; |
| // Count for external process for which we have no handles. |
| int externalProcessNoHandleCount; |
| int mRestartCount; // number of times we tried before bringing up it successfully. |
| ProcessRecord proc; // if non-null, hosting process. |
| ProcessRecord launchingApp; // if non-null, waiting for this app to be launched. |
| String stringName; |
| String shortStringName; |
| |
| public ContentProviderRecord(ActivityManagerService _service, ProviderInfo _info, |
| ApplicationInfo ai, ComponentName _name, boolean _singleton) { |
| service = _service; |
| info = _info; |
| uid = ai.uid; |
| appInfo = ai; |
| name = _name; |
| singleton = _singleton; |
| noReleaseNeeded = (uid == 0 || uid == Process.SYSTEM_UID) |
| && (_name == null || !"com.android.settings".equals(_name.getPackageName())); |
| } |
| |
| public ContentProviderRecord(ContentProviderRecord cpr) { |
| service = cpr.service; |
| info = cpr.info; |
| uid = cpr.uid; |
| appInfo = cpr.appInfo; |
| name = cpr.name; |
| singleton = cpr.singleton; |
| noReleaseNeeded = cpr.noReleaseNeeded; |
| } |
| |
| public ContentProviderHolder newHolder(ContentProviderConnection conn, boolean local) { |
| ContentProviderHolder holder = new ContentProviderHolder(info); |
| holder.provider = provider; |
| holder.noReleaseNeeded = noReleaseNeeded; |
| holder.connection = conn; |
| holder.mLocal = local; |
| return holder; |
| } |
| |
| public void setProcess(ProcessRecord proc) { |
| this.proc = proc; |
| if (ActivityManagerService.TRACK_PROCSTATS_ASSOCIATIONS) { |
| for (int iconn = connections.size() - 1; iconn >= 0; iconn--) { |
| final ContentProviderConnection conn = connections.get(iconn); |
| if (proc != null) { |
| conn.startAssociationIfNeeded(); |
| } else { |
| conn.stopAssociation(); |
| } |
| } |
| if (externalProcessTokenToHandle != null) { |
| for (int iext = externalProcessTokenToHandle.size() - 1; iext >= 0; iext--) { |
| final ExternalProcessHandle handle = externalProcessTokenToHandle.valueAt(iext); |
| if (proc != null) { |
| handle.startAssociationIfNeeded(this); |
| } else { |
| handle.stopAssociation(); |
| } |
| } |
| } |
| } |
| } |
| |
| public boolean canRunHere(ProcessRecord app) { |
| return (info.multiprocess || info.processName.equals(app.processName)) |
| && uid == app.info.uid; |
| } |
| |
| public void addExternalProcessHandleLocked(IBinder token, int callingUid, String callingTag) { |
| if (token == null) { |
| externalProcessNoHandleCount++; |
| } else { |
| if (externalProcessTokenToHandle == null) { |
| externalProcessTokenToHandle = new ArrayMap<>(); |
| } |
| ExternalProcessHandle handle = externalProcessTokenToHandle.get(token); |
| if (handle == null) { |
| handle = new ExternalProcessHandle(token, callingUid, callingTag); |
| externalProcessTokenToHandle.put(token, handle); |
| handle.startAssociationIfNeeded(this); |
| } |
| handle.mAcquisitionCount++; |
| } |
| } |
| |
| public boolean removeExternalProcessHandleLocked(IBinder token) { |
| if (hasExternalProcessHandles()) { |
| boolean hasHandle = false; |
| if (externalProcessTokenToHandle != null) { |
| ExternalProcessHandle handle = externalProcessTokenToHandle.get(token); |
| if (handle != null) { |
| hasHandle = true; |
| handle.mAcquisitionCount--; |
| if (handle.mAcquisitionCount == 0) { |
| removeExternalProcessHandleInternalLocked(token); |
| return true; |
| } |
| } |
| } |
| if (!hasHandle) { |
| externalProcessNoHandleCount--; |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| private void removeExternalProcessHandleInternalLocked(IBinder token) { |
| ExternalProcessHandle handle = externalProcessTokenToHandle.get(token); |
| handle.unlinkFromOwnDeathLocked(); |
| handle.stopAssociation(); |
| externalProcessTokenToHandle.remove(token); |
| if (externalProcessTokenToHandle.size() == 0) { |
| externalProcessTokenToHandle = null; |
| } |
| } |
| |
| public boolean hasExternalProcessHandles() { |
| return (externalProcessTokenToHandle != null || externalProcessNoHandleCount > 0); |
| } |
| |
| public boolean hasConnectionOrHandle() { |
| return !connections.isEmpty() || hasExternalProcessHandles(); |
| } |
| |
| /** |
| * Notify all clients that the provider has been published and ready to use, |
| * or timed out. |
| * |
| * @param status true: successfully published; false: timed out |
| */ |
| void onProviderPublishStatusLocked(boolean status) { |
| final int numOfConns = connections.size(); |
| for (int i = 0; i < numOfConns; i++) { |
| final ContentProviderConnection conn = connections.get(i); |
| if (conn.waiting && conn.client != null) { |
| final ProcessRecord client = conn.client; |
| if (!status) { |
| if (launchingApp == null) { |
| Slog.w(TAG_AM, "Unable to launch app " |
| + appInfo.packageName + "/" |
| + appInfo.uid + " for provider " |
| + info.authority + ": launching app became null"); |
| EventLogTags.writeAmProviderLostProcess( |
| UserHandle.getUserId(appInfo.uid), |
| appInfo.packageName, |
| appInfo.uid, info.authority); |
| } else { |
| Slog.wtf(TAG_AM, "Timeout waiting for provider " |
| + appInfo.packageName + "/" |
| + appInfo.uid + " for provider " |
| + info.authority |
| + " caller=" + client); |
| } |
| } |
| final IApplicationThread thread = client.getThread(); |
| if (thread != null) { |
| try { |
| thread.notifyContentProviderPublishStatus( |
| newHolder(status ? conn : null, false), |
| info.authority, conn.mExpectedUserId, status); |
| } catch (RemoteException e) { |
| } |
| } |
| } |
| conn.waiting = false; |
| } |
| } |
| |
| void dump(PrintWriter pw, String prefix, boolean full) { |
| if (full) { |
| pw.print(prefix); pw.print("package="); |
| pw.print(info.applicationInfo.packageName); |
| pw.print(" process="); pw.println(info.processName); |
| } |
| pw.print(prefix); pw.print("proc="); pw.println(proc); |
| if (launchingApp != null) { |
| pw.print(prefix); pw.print("launchingApp="); pw.println(launchingApp); |
| } |
| if (full) { |
| pw.print(prefix); pw.print("uid="); pw.print(uid); |
| pw.print(" provider="); pw.println(provider); |
| } |
| if (singleton) { |
| pw.print(prefix); pw.print("singleton="); pw.println(singleton); |
| } |
| pw.print(prefix); pw.print("authority="); pw.println(info.authority); |
| if (full) { |
| if (info.isSyncable || info.multiprocess || info.initOrder != 0) { |
| pw.print(prefix); pw.print("isSyncable="); pw.print(info.isSyncable); |
| pw.print(" multiprocess="); pw.print(info.multiprocess); |
| pw.print(" initOrder="); pw.println(info.initOrder); |
| } |
| } |
| if (full) { |
| if (hasExternalProcessHandles()) { |
| pw.print(prefix); pw.print("externals:"); |
| if (externalProcessTokenToHandle != null) { |
| pw.print(" w/token="); |
| pw.print(externalProcessTokenToHandle.size()); |
| } |
| if (externalProcessNoHandleCount > 0) { |
| pw.print(" notoken="); |
| pw.print(externalProcessNoHandleCount); |
| } |
| pw.println(); |
| } |
| } else { |
| if (connections.size() > 0 || externalProcessNoHandleCount > 0) { |
| pw.print(prefix); pw.print(connections.size()); |
| pw.print(" connections, "); pw.print(externalProcessNoHandleCount); |
| pw.println(" external handles"); |
| } |
| } |
| if (connections.size() > 0) { |
| if (full) { |
| pw.print(prefix); pw.println("Connections:"); |
| } |
| for (int i=0; i<connections.size(); i++) { |
| ContentProviderConnection conn = connections.get(i); |
| pw.print(prefix); pw.print(" -> "); pw.println(conn.toClientString()); |
| if (conn.provider != this) { |
| pw.print(prefix); pw.print(" *** WRONG PROVIDER: "); |
| pw.println(conn.provider); |
| } |
| } |
| } |
| } |
| |
| @Override |
| public String toString() { |
| if (stringName != null) { |
| return stringName; |
| } |
| StringBuilder sb = new StringBuilder(128); |
| sb.append("ContentProviderRecord{"); |
| sb.append(Integer.toHexString(System.identityHashCode(this))); |
| sb.append(" u"); |
| sb.append(UserHandle.getUserId(uid)); |
| sb.append(' '); |
| sb.append(name.flattenToShortString()); |
| sb.append('}'); |
| return stringName = sb.toString(); |
| } |
| |
| public String toShortString() { |
| if (shortStringName != null) { |
| return shortStringName; |
| } |
| StringBuilder sb = new StringBuilder(128); |
| sb.append(Integer.toHexString(System.identityHashCode(this))); |
| sb.append('/'); |
| sb.append(name.flattenToShortString()); |
| return shortStringName = sb.toString(); |
| } |
| |
| // This class represents a handle from an external process to a provider. |
| private class ExternalProcessHandle implements DeathRecipient { |
| private static final String LOG_TAG = "ExternalProcessHanldle"; |
| |
| final IBinder mToken; |
| final int mOwningUid; |
| final String mOwningProcessName; |
| int mAcquisitionCount; |
| AssociationState.SourceState mAssociation; |
| private Object mProcStatsLock; // Internal lock for accessing AssociationState |
| |
| public ExternalProcessHandle(IBinder token, int owningUid, String owningProcessName) { |
| mToken = token; |
| mOwningUid = owningUid; |
| mOwningProcessName = owningProcessName; |
| try { |
| token.linkToDeath(this, 0); |
| } catch (RemoteException re) { |
| Slog.e(LOG_TAG, "Couldn't register for death for token: " + mToken, re); |
| } |
| } |
| |
| public void unlinkFromOwnDeathLocked() { |
| mToken.unlinkToDeath(this, 0); |
| } |
| |
| public void startAssociationIfNeeded(ContentProviderRecord provider) { |
| // If we don't already have an active association, create one... but only if this |
| // is an association between two different processes. |
| if (ActivityManagerService.TRACK_PROCSTATS_ASSOCIATIONS |
| && mAssociation == null && provider.proc != null |
| && (provider.appInfo.uid != mOwningUid |
| || !provider.info.processName.equals(mOwningProcessName))) { |
| ProcessStats.ProcessStateHolder holder = |
| provider.proc.getPkgList().get(provider.name.getPackageName()); |
| if (holder == null) { |
| Slog.wtf(TAG_AM, "No package in referenced provider " |
| + provider.name.toShortString() + ": proc=" + provider.proc); |
| } else if (holder.pkg == null) { |
| Slog.wtf(TAG_AM, "Inactive holder in referenced provider " |
| + provider.name.toShortString() + ": proc=" + provider.proc); |
| } else { |
| mProcStatsLock = provider.proc.mService.mProcessStats.mLock; |
| synchronized (mProcStatsLock) { |
| mAssociation = holder.pkg.getAssociationStateLocked(holder.state, |
| provider.name.getClassName()).startSource(mOwningUid, |
| mOwningProcessName, null); |
| } |
| } |
| } |
| } |
| |
| public void stopAssociation() { |
| if (mAssociation != null) { |
| synchronized (mProcStatsLock) { |
| mAssociation.stop(); |
| } |
| mAssociation = null; |
| } |
| } |
| |
| @Override |
| public void binderDied() { |
| synchronized (service) { |
| if (hasExternalProcessHandles() && |
| externalProcessTokenToHandle.get(mToken) != null) { |
| removeExternalProcessHandleInternalLocked(mToken); |
| } |
| } |
| } |
| } |
| |
| public ComponentName getComponentName() { |
| return name; |
| } |
| } |
