Merge "Improved storage size detection." into nyc-mr1-dev (f0de4da4) · Commits · e / os / android_frameworks_base

core/java/android/os/storage/StorageManager.java

+17 −8

Original line number	Diff line number	Diff line
		@@ -132,10 +132,15 @@ public class StorageManager {
		public static final int FLAG_INCLUDE_INVISIBLE = 1 << 10;

		private static volatile IMountService sMountService = null;
		private static final String INTERNAL_STORAGE_SIZE_PATH =
		"/sys/block/mmcblk0/size";
		private static final String INTERNAL_STORAGE_SECTOR_SIZE =
		"/sys/block/mmcblk0/queue/hw_sector_size";

		// TODO: the location of the primary storage block varies from device to device, so we need to
		// try the most likely candidates - a long-term solution would be a device-specific vold
		// function that returns the calculated size.
		private static final String[] INTERNAL_STORAGE_SIZE_PATHS = {
		"/sys/block/mmcblk0/size",
		"/sys/block/sda/size"
		};
		private static final int INTERNAL_STORAGE_SECTOR_SIZE = 512;

		private final Context mContext;
		private final ContentResolver mResolver;
		@@ -926,9 +931,13 @@ public class StorageManager {

		/** {@hide} */
		public long getPrimaryStorageSize() {
		final long numberBlocks = readLong(INTERNAL_STORAGE_SIZE_PATH);
		final long sectorSize = readLong(INTERNAL_STORAGE_SECTOR_SIZE);
		return numberBlocks * sectorSize;
		for (String path : INTERNAL_STORAGE_SIZE_PATHS) {
		final long numberBlocks = readLong(path);
		if (numberBlocks > 0) {
		return numberBlocks * INTERNAL_STORAGE_SECTOR_SIZE;
		}
		}
		return 0;
		}

		private long readLong(String path) {
		@@ -936,7 +945,7 @@ public class StorageManager {
		final BufferedReader reader = new BufferedReader(new InputStreamReader(fis));) {
		return Long.parseLong(reader.readLine());
		} catch (Exception e) {
		Slog.w("Could not read " + path, e);
		Slog.w(TAG, "Could not read " + path, e);
		return 0;
		}
		}