Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 72e76c09 authored by Pawit Pornkitprasan's avatar Pawit Pornkitprasan
Browse files

MountService: Account for switchable vold pair 

Switch the volume properties when persist.sys.vold.switchexternal is
in effect.

Change-Id: Id475a4704c17a3da418758994b7ad73a3928c99b
parent 28bc5a5b

services/java/com/android/server/MountService.java

+54 −0
Original line number Diff line number Diff line
@@ -1154,6 +1154,60 @@ class MountService extends IMountService.Stub 
            }

            parser.close();

        }



        // If persist.sys.vold.switchexternal is in effect, switch volume

        // properties for correct display. We switch everything except

        // "primary" (position = 0) as that should always belong to /mnt/sdcard.

        if (SystemProperties.getInt("persist.sys.vold.switchexternal", 0) == 1) {

            String[] pair = SystemProperties.get("ro.vold.switchablepair", "").split(",");



            if (pair.length != 2) {

                Slog.e(TAG, "invalid switchable mountpoints");

                return;

            }



            Slog.d(TAG, "Switching storage path " + pair[0] + " and " + pair[1]);



            StorageVolume left = null;

            StorageVolume right = null;

            int leftIndex = -1;

            int rightIndex = -1;

            for (int i = 0; i < mVolumes.size(); i++) {

                StorageVolume v = mVolumes.get(i);

                String path = v.getPath();

                if (path.equals(pair[0])) {

                    left = v;

                    leftIndex = i;

                } else if (path.equals(pair[1])) {

                    right = v;

                    rightIndex = i;

                }

            }



            if (left == null || right == null) {

                Slog.e(TAG, "unable to locate volume for switchable mountpoints");

                return;

            }



            // Create new volumes

            StorageVolume newLeft = new StorageVolume(left.getPath(),

                right.getDescription(), right.isRemovable(),

                right.isEmulated(), right.getMtpReserveSpace(),

                right.allowMassStorage(), right.getMaxFileSize());

            newLeft.setStorageId(leftIndex);



            StorageVolume newRight = new StorageVolume(right.getPath(),

                left.getDescription(), left.isRemovable(),

                left.isEmulated(), left.getMtpReserveSpace(),

                left.allowMassStorage(), left.getMaxFileSize());

            newRight.setStorageId(rightIndex);



            mVolumes.remove(leftIndex);

            mVolumes.add(leftIndex, newLeft);



            mVolumes.remove(rightIndex);

            mVolumes.add(rightIndex, newRight);

        }

    }



    /**