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Bootstrap the ever-backed-up bookkeeping properly

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This commit is contained in:
Christopher Tate
2009-08-03 15:38:09 -07:00
parent 4f40b76503
commit dfec20b10b
1 changed files with 31 additions and 25 deletions
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56
services/java/com/android/server/BackupManagerService.java
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@@ -307,36 +307,42 @@ class BackupManagerService extends IBackupManager.Stub {
mEverStored = new File(mBaseStateDir, "processed");
File tempProcessedFile = new File(mBaseStateDir, "processed.new");
try {
RandomAccessFile temp = new RandomAccessFile(tempProcessedFile, "rw");
mEverStoredStream = new RandomAccessFile(mEverStored, "r");
// If there are previous contents, parse them out then start a new
// file to continue the recordkeeping.
if (mEverStored.exists()) {
RandomAccessFile temp = new RandomAccessFile(tempProcessedFile, "rw");
mEverStoredStream = new RandomAccessFile(mEverStored, "r");
// parse its existing contents
mEverStoredStream.seek(0);
temp.seek(0);
try {
while (true) {
PackageInfo info;
String pkg = mEverStoredStream.readUTF();
try {
info = mPackageManager.getPackageInfo(pkg, 0);
mEverStoredApps.add(pkg);
temp.writeUTF(pkg);
if (DEBUG) Log.v(TAG, " + " + pkg);
} catch (NameNotFoundException e) {
// nope, this package was uninstalled; don't include it
if (DEBUG) Log.v(TAG, " - " + pkg);
// parse its existing contents
mEverStoredStream.seek(0);
temp.seek(0);
try {
while (true) {
PackageInfo info;
String pkg = mEverStoredStream.readUTF();
try {
info = mPackageManager.getPackageInfo(pkg, 0);
mEverStoredApps.add(pkg);
temp.writeUTF(pkg);
if (DEBUG) Log.v(TAG, " + " + pkg);
} catch (NameNotFoundException e) {
// nope, this package was uninstalled; don't include it
if (DEBUG) Log.v(TAG, " - " + pkg);
}
}
} catch (EOFException e) {
// now we're at EOF
}
} catch (EOFException e) {
// now we're at EOF
}
// Once we've rewritten the backup history log, atomically replace the
// old one with the new one then reopen the file for continuing use.
temp.close();
mEverStoredStream.close();
tempProcessedFile.renameTo(mEverStored);
// Once we've rewritten the backup history log, atomically replace the
// old one with the new one then reopen the file for continuing use.
temp.close();
mEverStoredStream.close();
tempProcessedFile.renameTo(mEverStored);
}
// This will create the file if it doesn't exist
mEverStoredStream = new RandomAccessFile(mEverStored, "rwd");
mEverStoredStream.seek(mEverStoredStream.length());
} catch (IOException e) {
Log.e(TAG, "Unable to open known-stored file!");
mEverStoredStream = null;