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-rw-r--r--packages/WallpaperBackup/src/com/android/wallpaperbackup/WallpaperBackupAgent.java103
-rw-r--r--services/backup/java/com/android/server/backup/BackupManagerService.java7
2 files changed, 84 insertions, 26 deletions
diff --git a/packages/WallpaperBackup/src/com/android/wallpaperbackup/WallpaperBackupAgent.java b/packages/WallpaperBackup/src/com/android/wallpaperbackup/WallpaperBackupAgent.java
index 47d1493e1574..97efed0130be 100644
--- a/packages/WallpaperBackup/src/com/android/wallpaperbackup/WallpaperBackupAgent.java
+++ b/packages/WallpaperBackup/src/com/android/wallpaperbackup/WallpaperBackupAgent.java
@@ -40,22 +40,30 @@ import java.nio.charset.StandardCharsets;
public class WallpaperBackupAgent extends BackupAgent {
private static final String TAG = "WallpaperBackup";
- private static final boolean DEBUG = false;
+ private static final boolean DEBUG = true;
// NB: must be kept in sync with WallpaperManagerService but has no
// compile-time visibility.
// Target filenames within the system's wallpaper directory
static final String WALLPAPER = "wallpaper_orig";
+ static final String WALLPAPER_LOCK = "wallpaper_lock_orig";
static final String WALLPAPER_INFO = "wallpaper_info.xml";
// Names of our local-data stage files/links
static final String IMAGE_STAGE = "wallpaper-stage";
+ static final String LOCK_IMAGE_STAGE = "wallpaper-lock-stage";
static final String INFO_STAGE = "wallpaper-info-stage";
static final String EMPTY_SENTINEL = "empty";
+ static final String QUOTA_SENTINEL = "quota";
- private File mWallpaperInfo; // wallpaper metadata file
- private File mWallpaperFile; // primary wallpaper image file
+ private File mWallpaperInfo; // wallpaper metadata file
+ private File mWallpaperFile; // primary wallpaper image file
+ private File mLockWallpaperFile; // lock wallpaper image file
+
+ // If this file exists, it means we exceeded our quota last time
+ private File mQuotaFile;
+ private boolean mQuotaExceeded;
private WallpaperManager mWm;
@@ -68,7 +76,14 @@ public class WallpaperBackupAgent extends BackupAgent {
File wallpaperDir = Environment.getUserSystemDirectory(UserHandle.USER_SYSTEM);
mWallpaperInfo = new File(wallpaperDir, WALLPAPER_INFO);
mWallpaperFile = new File(wallpaperDir, WALLPAPER);
+ mLockWallpaperFile = new File(wallpaperDir, WALLPAPER_LOCK);
mWm = (WallpaperManager) getSystemService(Context.WALLPAPER_SERVICE);
+
+ mQuotaFile = new File(getFilesDir(), QUOTA_SENTINEL);
+ mQuotaExceeded = mQuotaFile.exists();
+ if (DEBUG) {
+ Slog.v(TAG, "quota file " + mQuotaFile.getPath() + " exists=" + mQuotaExceeded);
+ }
}
@Override
@@ -77,6 +92,7 @@ public class WallpaperBackupAgent extends BackupAgent {
final File filesDir = getFilesDir();
final File infoStage = new File(filesDir, INFO_STAGE);
final File imageStage = new File (filesDir, IMAGE_STAGE);
+ final File lockImageStage = new File (filesDir, LOCK_IMAGE_STAGE);
final File empty = new File (filesDir, EMPTY_SENTINEL);
try {
@@ -96,11 +112,18 @@ public class WallpaperBackupAgent extends BackupAgent {
// In case of prior muddled state
infoStage.delete();
imageStage.delete();
+ lockImageStage.delete();
Os.link(mWallpaperInfo.getCanonicalPath(), infoStage.getCanonicalPath());
fullBackupFile(infoStage, data);
Os.link(mWallpaperFile.getCanonicalPath(), imageStage.getCanonicalPath());
fullBackupFile(imageStage, data);
+
+ // Don't try to store the lock image if we overran our quota last time
+ if (!mQuotaExceeded) {
+ Os.link(mLockWallpaperFile.getCanonicalPath(), lockImageStage.getCanonicalPath());
+ fullBackupFile(lockImageStage, data);
+ }
} else {
if (DEBUG) {
Slog.v(TAG, "Wallpaper not backup-eligible; writing no data");
@@ -114,6 +137,26 @@ public class WallpaperBackupAgent extends BackupAgent {
}
infoStage.delete();
imageStage.delete();
+ lockImageStage.delete();
+
+ // Even if this time we had to back off on attempting to store the lock image
+ // due to exceeding the data quota, try again next time. This will alternate
+ // between "try both" and "only store the primary image" until either there
+ // is no lock image to store, or the quota is raised, or both fit under the
+ // quota.
+ mQuotaFile.delete();
+ }
+ }
+
+ @Override
+ public void onQuotaExceeded(long backupDataBytes, long quotaBytes) {
+ if (DEBUG) {
+ Slog.i(TAG, "Quota exceeded (" + backupDataBytes + " vs " + quotaBytes + ')');
+ }
+ try (FileOutputStream f = new FileOutputStream(mQuotaFile)) {
+ f.write(0);
+ } catch (Exception e) {
+ Slog.w(TAG, "Unable to record quota-exceeded: " + e.getMessage());
}
}
@@ -124,30 +167,17 @@ public class WallpaperBackupAgent extends BackupAgent {
if (DEBUG) {
Slog.v(TAG, "onRestoreFinished()");
}
- final File infoStage = new File(getFilesDir(), INFO_STAGE);
- final File imageStage = new File (getFilesDir(), IMAGE_STAGE);
+ final File filesDir = getFilesDir();
+ final File infoStage = new File(filesDir, INFO_STAGE);
+ final File imageStage = new File (filesDir, IMAGE_STAGE);
+ final File lockImageStage = new File (filesDir, LOCK_IMAGE_STAGE);
try {
// It is valid for the imagery to be absent; it means that we were not permitted
- // to back up the original image on the source device.
- if (imageStage.exists()) {
- if (DEBUG) {
- Slog.v(TAG, "Got restored wallpaper; applying");
- }
-
- // Parse the restored info file to find the crop hint. Note that this currently
- // relies on a priori knowledge of the wallpaper info file schema.
- Rect cropHint = parseCropHint(infoStage);
- if (cropHint != null) {
- if (DEBUG) {
- Slog.v(TAG, "Restored crop hint " + cropHint + "; now writing data");
- }
- WallpaperManager wm = getSystemService(WallpaperManager.class);
- try (FileInputStream in = new FileInputStream(imageStage)) {
- wm.setStream(in, cropHint, true, WallpaperManager.FLAG_SYSTEM);
- } finally {} // auto-closes 'in'
- }
- }
+ // to back up the original image on the source device, or there was no user-supplied
+ // wallpaper image present.
+ restoreFromStage(imageStage, infoStage, "wp", WallpaperManager.FLAG_SYSTEM);
+ restoreFromStage(lockImageStage, infoStage, "kwp", WallpaperManager.FLAG_LOCK);
} catch (Exception e) {
Slog.e(TAG, "Unable to restore wallpaper: " + e.getMessage());
} finally {
@@ -156,10 +186,31 @@ public class WallpaperBackupAgent extends BackupAgent {
}
infoStage.delete();
imageStage.delete();
+ lockImageStage.delete();
+ }
+ }
+
+ private void restoreFromStage(File stage, File info, String hintTag, int which)
+ throws IOException {
+ if (stage.exists()) {
+ if (DEBUG) {
+ Slog.v(TAG, "Got restored wallpaper; applying which=" + which);
+ }
+ // Parse the restored info file to find the crop hint. Note that this currently
+ // relies on a priori knowledge of the wallpaper info file schema.
+ Rect cropHint = parseCropHint(info, hintTag);
+ if (cropHint != null) {
+ if (DEBUG) {
+ Slog.v(TAG, "Restored crop hint " + cropHint + "; now writing data");
+ }
+ try (FileInputStream in = new FileInputStream(stage)) {
+ mWm.setStream(in, cropHint, true, which);
+ } finally {} // auto-closes 'in'
+ }
}
}
- private Rect parseCropHint(File wallpaperInfo) {
+ private Rect parseCropHint(File wallpaperInfo, String sectionTag) {
Rect cropHint = new Rect();
try (FileInputStream stream = new FileInputStream(wallpaperInfo)) {
XmlPullParser parser = Xml.newPullParser();
@@ -170,7 +221,7 @@ public class WallpaperBackupAgent extends BackupAgent {
type = parser.next();
if (type == XmlPullParser.START_TAG) {
String tag = parser.getName();
- if ("wp".equals(tag)) {
+ if (sectionTag.equals(tag)) {
cropHint.left = getAttributeInt(parser, "cropLeft", 0);
cropHint.top = getAttributeInt(parser, "cropTop", 0);
cropHint.right = getAttributeInt(parser, "cropRight", 0);
diff --git a/services/backup/java/com/android/server/backup/BackupManagerService.java b/services/backup/java/com/android/server/backup/BackupManagerService.java
index 0b85198d1c2a..8e0ec520c5ba 100644
--- a/services/backup/java/com/android/server/backup/BackupManagerService.java
+++ b/services/backup/java/com/android/server/backup/BackupManagerService.java
@@ -4662,6 +4662,13 @@ public class BackupManagerService {
}
cleanUpPipes(transportPipes);
cleanUpPipes(enginePipes);
+ if (currentPackage.applicationInfo != null) {
+ Slog.i(TAG, "Unbinding agent in " + packageName);
+ addBackupTrace("unbinding " + packageName);
+ try {
+ mActivityManager.unbindBackupAgent(currentPackage.applicationInfo);
+ } catch (RemoteException e) { /* can't happen; activity manager is local */ }
+ }
}
} catch (Exception e) {
backupRunStatus = BackupManager.ERROR_TRANSPORT_ABORTED;
generated by cgit v1.2.3-59-g8ed1b (git 2.39.0) at 2025-12-02 13:24:13 +0000