Merge changes from topic "abandon-race" into rvc-dev am: 6b58f8ca37 am: 8670782013 (97b3c914) · Commits · e / os / android_frameworks_base

services/core/java/com/android/server/pm/PackageInstallerService.java

+1 −1

Original line number	Diff line number	Diff line
		@@ -1270,7 +1270,7 @@ public class PackageInstallerService extends IPackageInstaller.Stub implements
		public void onStagedSessionChanged(PackageInstallerSession session) {
		session.markUpdated();
		writeSessionsAsync();
		if (mOkToSendBroadcasts) {
		if (mOkToSendBroadcasts && !session.isDestroyed()) {
		// we don't scrub the data here as this is sent only to the installer several
		// privileged system packages
		mPm.sendSessionUpdatedBroadcast(

services/core/java/com/android/server/pm/PackageInstallerSession.java

+28 −5

Original line number	Diff line number	Diff line
		@@ -1076,6 +1076,19 @@ public class PackageInstallerSession extends IPackageInstallerSession.Stub {
		}
		}

		/**
		* Check if the caller is the owner of this session. Otherwise throw a
		* {@link SecurityException}.
		*/
		@GuardedBy("mLock")
		private void assertCallerIsOwnerOrRootOrSystemLocked() {
		final int callingUid = Binder.getCallingUid();
		if (callingUid != Process.ROOT_UID && callingUid != mInstallerUid
		&& callingUid != Process.SYSTEM_UID) {
		throw new SecurityException("Session does not belong to uid " + callingUid);
		}
		}

		/**
		* If anybody is reading or writing data of the session, throw an {@link SecurityException}.
		*/
		@@ -2561,7 +2574,13 @@ public class PackageInstallerSession extends IPackageInstallerSession.Stub {
		+ mParentSessionId + " and may not be abandoned directly.");
		}
		synchronized (mLock) {
		if (params.isStaged && mDestroyed) {
		// If a user abandons staged session in an unsafe state, then system will try to
		// abandon the destroyed staged session when it is safe on behalf of the user.
		assertCallerIsOwnerOrRootOrSystemLocked();
		} else {
		assertCallerIsOwnerOrRootLocked();
		}

		if (isStagedAndInTerminalState()) {
		// We keep the session in the database if it's in a finalized state. It will be
		@@ -2571,11 +2590,12 @@ public class PackageInstallerSession extends IPackageInstallerSession.Stub {
		return;
		}
		if (mCommitted && params.isStaged) {
		synchronized (mLock) {
		mDestroyed = true;
		if (!mStagingManager.abortCommittedSessionLocked(this)) {
		// Do not clean up the staged session from system. It is not safe yet.
		mCallback.onStagedSessionChanged(this);
		return;
		}
		mStagingManager.abortCommittedSession(this);

		cleanStageDir();
		}

		@@ -2935,6 +2955,7 @@ public class PackageInstallerSession extends IPackageInstallerSession.Stub {
		/** {@hide} */
		void setStagedSessionReady() {
		synchronized (mLock) {
		if (mDestroyed) return; // Do not allow destroyed staged session to change state
		mStagedSessionReady = true;
		mStagedSessionApplied = false;
		mStagedSessionFailed = false;
		@@ -2948,6 +2969,7 @@ public class PackageInstallerSession extends IPackageInstallerSession.Stub {
		void setStagedSessionFailed(@StagedSessionErrorCode int errorCode,
		String errorMessage) {
		synchronized (mLock) {
		if (mDestroyed) return; // Do not allow destroyed staged session to change state
		mStagedSessionReady = false;
		mStagedSessionApplied = false;
		mStagedSessionFailed = true;
		@@ -2962,6 +2984,7 @@ public class PackageInstallerSession extends IPackageInstallerSession.Stub {
		/** {@hide} */
		void setStagedSessionApplied() {
		synchronized (mLock) {
		if (mDestroyed) return; // Do not allow destroyed staged session to change state
		mStagedSessionReady = false;
		mStagedSessionApplied = true;
		mStagedSessionFailed = false;

services/core/java/com/android/server/pm/StagingManager.java

+138 −35

Original line number	Diff line number	Diff line
		@@ -61,6 +61,7 @@ import android.text.TextUtils;
		import android.util.IntArray;
		import android.util.Slog;
		import android.util.SparseArray;
		import android.util.SparseBooleanArray;
		import android.util.SparseIntArray;
		import android.util.apk.ApkSignatureVerifier;

		@@ -205,7 +206,7 @@ public class StagingManager {
		final IntArray childSessionIds = new IntArray();
		if (session.isMultiPackage()) {
		for (int id : session.getChildSessionIds()) {
		if (isApexSession(mStagedSessions.get(id))) {
		if (isApexSession(getStagedSession(id))) {
		childSessionIds.add(id);
		}
		}
		@@ -800,6 +801,8 @@ public class StagingManager {
		+ session.sessionId + " [" + errorMessage + "]");
		session.setStagedSessionFailed(
		SessionInfo.STAGED_SESSION_VERIFICATION_FAILED, errorMessage);
		mPreRebootVerificationHandler.onPreRebootVerificationComplete(
		session.sessionId);
		return;
		}
		mPreRebootVerificationHandler.notifyPreRebootVerification_Apk_Complete(
		@@ -883,7 +886,8 @@ public class StagingManager {
		synchronized (mStagedSessions) {
		for (int i = 0; i < mStagedSessions.size(); i++) {
		final PackageInstallerSession stagedSession = mStagedSessions.valueAt(i);
		if (!stagedSession.isCommitted() \|\| stagedSession.isStagedAndInTerminalState()) {
		if (!stagedSession.isCommitted() \|\| stagedSession.isStagedAndInTerminalState()
		\|\| stagedSession.isDestroyed()) {
		continue;
		}
		if (stagedSession.isMultiPackage()) {
		@@ -946,29 +950,70 @@ public class StagingManager {
		}
		}

		void abortCommittedSession(@NonNull PackageInstallerSession session) {
		/**
		* <p>Abort committed staged session
		*
		* <p>This method must be called while holding {@link PackageInstallerSession.mLock}.
		*
		* <p>The method returns {@code false} to indicate it is not safe to clean up the session from
		* system yet. When it is safe, the method returns {@code true}.
		*
		* <p> When it is safe to clean up, {@link StagingManager} will call
		* {@link PackageInstallerSession#abandon()} on the session again.
		*
		* @return {@code true} if it is safe to cleanup the session resources, otherwise {@code false}.
		*/
		boolean abortCommittedSessionLocked(@NonNull PackageInstallerSession session) {
		int sessionId = session.sessionId;
		if (session.isStagedSessionApplied()) {
		Slog.w(TAG, "Cannot abort applied session : " + session.sessionId);
		return;
		Slog.w(TAG, "Cannot abort applied session : " + sessionId);
		return false;
		}
		if (!session.isDestroyed()) {
		throw new IllegalStateException("Committed session must be destroyed before aborting it"
		+ " from StagingManager");
		}
		if (getStagedSession(sessionId) == null) {
		Slog.w(TAG, "Session " + sessionId + " has been abandoned already");
		return false;
		}
		abortSession(session);

		boolean hasApex = sessionContainsApex(session);
		if (hasApex) {
		ApexSessionInfo apexSession = mApexManager.getStagedSessionInfo(session.sessionId);
		// If pre-reboot verification is running, then return false. StagingManager will call
		// abandon again when pre-reboot verification ends.
		if (mPreRebootVerificationHandler.isVerificationRunning(sessionId)) {
		Slog.w(TAG, "Session " + sessionId + " aborted before pre-reboot "
		+ "verification completed.");
		return false;
		}

		// A session could be marked ready once its pre-reboot verification ends
		if (session.isStagedSessionReady()) {
		if (sessionContainsApex(session)) {
		try {
		ApexSessionInfo apexSession =
		mApexManager.getStagedSessionInfo(session.sessionId);
		if (apexSession == null \|\| isApexSessionFinalized(apexSession)) {
		Slog.w(TAG,
		"Cannot abort session " + session.sessionId
		+ " because it is not active or APEXD is not reachable");
		return;
		}
		try {
		+ " because it is not active.");
		} else {
		mApexManager.abortStagedSession(session.sessionId);
		} catch (Exception ignore) {
		}
		} catch (Exception e) {
		// Failed to contact apexd service. The apex might still be staged. We can still
		// safely cleanup the staged session since pre-reboot verification is complete.
		// Also, cleaning up the stageDir prevents the apex from being activated.
		Slog.w(TAG, "Could not contact apexd to abort staged session " + sessionId);
		}
		}
		}

		// Session was successfully aborted from apexd (if required) and pre-reboot verification
		// is also complete. It is now safe to clean up the session from system.
		abortSession(session);
		return true;
		}

		private boolean isApexSessionFinalized(ApexSessionInfo session) {
		/* checking if the session is in a final state, i.e., not active anymore */
		return session.isUnknown \|\| session.isActivationFailed \|\| session.isSuccess
		@@ -1045,6 +1090,11 @@ public class StagingManager {
		// Final states, nothing to do.
		return;
		}
		if (session.isDestroyed()) {
		// Device rebooted before abandoned session was cleaned up.
		session.abandon();
		return;
		}
		if (!session.isStagedSessionReady()) {
		// The framework got restarted before the pre-reboot verification could complete,
		// restart the verification.
		@@ -1127,10 +1177,20 @@ public class StagingManager {
		}
		}

		private PackageInstallerSession getStagedSession(int sessionId) {
		PackageInstallerSession session;
		synchronized (mStagedSessions) {
		session = mStagedSessions.get(sessionId);
		}
		return session;
		}

		private final class PreRebootVerificationHandler extends Handler {
		// Hold session ids before handler gets ready to do the verification.
		private IntArray mPendingSessionIds;
		private boolean mIsReady;
		@GuardedBy("mVerificationRunning")
		private final SparseBooleanArray mVerificationRunning = new SparseBooleanArray();

		PreRebootVerificationHandler(Looper looper) {
		super(looper);
		@@ -1158,13 +1218,15 @@ public class StagingManager {
		@Override
		public void handleMessage(Message msg) {
		final int sessionId = msg.arg1;
		final PackageInstallerSession session;
		synchronized (mStagedSessions) {
		session = mStagedSessions.get(sessionId);
		}
		// Maybe session was aborted before pre-reboot verification was complete
		final PackageInstallerSession session = getStagedSession(sessionId);
		if (session == null) {
		Slog.d(TAG, "Stopping pre-reboot verification for sessionId: " + sessionId);
		Slog.wtf(TAG, "Session disappeared in the middle of pre-reboot verification: "
		+ sessionId);
		return;
		}
		if (session.isDestroyed()) {
		// No point in running verification on a destroyed session
		onPreRebootVerificationComplete(sessionId);
		return;
		}
		switch (msg.what) {
		@@ -1203,9 +1265,40 @@ public class StagingManager {
		mPendingSessionIds.add(sessionId);
		return;
		}

		PackageInstallerSession session = getStagedSession(sessionId);
		synchronized (mVerificationRunning) {
		// Do not start verification on a session that has been abandoned
		if (session == null \|\| session.isDestroyed()) {
		return;
		}
		Slog.d(TAG, "Starting preRebootVerification for session " + sessionId);
		mVerificationRunning.put(sessionId, true);
		}
		obtainMessage(MSG_PRE_REBOOT_VERIFICATION_START, sessionId, 0).sendToTarget();
		}

		// Things to do when pre-reboot verification completes for a particular sessionId
		private void onPreRebootVerificationComplete(int sessionId) {
		// Remove it from mVerificationRunning so that verification is considered complete
		synchronized (mVerificationRunning) {
		Slog.d(TAG, "Stopping preRebootVerification for session " + sessionId);
		mVerificationRunning.delete(sessionId);
		}
		// Check if the session was destroyed while pre-reboot verification was running. If so,
		// abandon it again.
		PackageInstallerSession session = getStagedSession(sessionId);
		if (session != null && session.isDestroyed()) {
		session.abandon();
		}
		}

		private boolean isVerificationRunning(int sessionId) {
		synchronized (mVerificationRunning) {
		return mVerificationRunning.get(sessionId);
		}
		}

		private void notifyPreRebootVerification_Start_Complete(int sessionId) {
		obtainMessage(MSG_PRE_REBOOT_VERIFICATION_APEX, sessionId, 0).sendToTarget();
		}
		@@ -1224,8 +1317,6 @@ public class StagingManager {
		* See {@link PreRebootVerificationHandler} to see all nodes of pre reboot verification
		*/
		private void handlePreRebootVerification_Start(@NonNull PackageInstallerSession session) {
		Slog.d(TAG, "Starting preRebootVerification for session " + session.sessionId);

		if ((session.params.installFlags & PackageManager.INSTALL_ENABLE_ROLLBACK) != 0) {
		// If rollback is enabled for this session, we call through to the RollbackManager
		// with the list of sessions it must enable rollback for. Note that
		@@ -1272,6 +1363,7 @@ public class StagingManager {
		}
		} catch (PackageManagerException e) {
		session.setStagedSessionFailed(e.error, e.getMessage());
		onPreRebootVerificationComplete(session.sessionId);
		return;
		}

		@@ -1304,6 +1396,7 @@ public class StagingManager {
		// TODO(b/118865310): abort the session on apexd.
		} catch (PackageManagerException e) {
		session.setStagedSessionFailed(e.error, e.getMessage());
		onPreRebootVerificationComplete(session.sessionId);
		}
		}

		@@ -1326,9 +1419,18 @@ public class StagingManager {
		Slog.e(TAG, "Failed to get hold of StorageManager", e);
		session.setStagedSessionFailed(SessionInfo.STAGED_SESSION_UNKNOWN,
		"Failed to get hold of StorageManager");
		onPreRebootVerificationComplete(session.sessionId);
		return;
		}

		// Stop pre-reboot verification before marking session ready. From this point on, if we
		// abandon the session then it will be cleaned up immediately. If session is abandoned
		// after this point, then even if for some reason system tries to install the session
		// or activate its apex, there won't be any files to work with as they will be cleaned
		// up by the system as part of abandonment. If session is abandoned before this point,
		// then the session is already destroyed and cannot be marked ready anymore.
		onPreRebootVerificationComplete(session.sessionId);

		// Proactively mark session as ready before calling apexd. Although this call order
		// looks counter-intuitive, this is the easiest way to ensure that session won't end up
		// in the inconsistent state:
		@@ -1340,15 +1442,16 @@ public class StagingManager {
		// only apex part of the train will be applied, leaving device in an inconsistent state.
		Slog.d(TAG, "Marking session " + session.sessionId + " as ready");
		session.setStagedSessionReady();
		if (session.isStagedSessionReady()) {
		final boolean hasApex = sessionContainsApex(session);
		if (!hasApex) {
		// Session doesn't contain apex, nothing to do.
		return;
		}
		if (hasApex) {
		try {
		mApexManager.markStagedSessionReady(session.sessionId);
		} catch (PackageManagerException e) {
		session.setStagedSessionFailed(e.error, e.getMessage());
		return;
		}
		}
		}
		}
		}