New "sm" shell tool to call StorageManager.

# Copyright 2015 The Android Open Source Project

#

LOCAL_PATH:= $(call my-dir)

include $(CLEAR_VARS)

LOCAL_SRC_FILES := $(call all-subdir-java-files)

LOCAL_MODULE := sm

include $(BUILD_JAVA_LIBRARY)

include $(CLEAR_VARS)

LOCAL_MODULE := sm

LOCAL_SRC_FILES := sm

LOCAL_MODULE_CLASS := EXECUTABLES

LOCAL_MODULE_TAGS := optional

include $(BUILD_PREBUILT)

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# Script to start "sm" on the device, which has a very rudimentary

# shell.

#

base=/system

export CLASSPATH=$base/framework/sm.jar

exec app_process $base/bin com.android.commands.sm.Sm "$@"

/*

 * Copyright (C) 2015 The Android Open Source Project

 *

 * Licensed under the Apache License, Version 2.0 (the "License");

 * you may not use this file except in compliance with the License.

 * You may obtain a copy of the License at

 *

 *      http://www.apache.org/licenses/LICENSE-2.0

 *

 * Unless required by applicable law or agreed to in writing, software

 * distributed under the License is distributed on an "AS IS" BASIS,

 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

 * See the License for the specific language governing permissions and

 * limitations under the License.

 */

package com.android.commands.sm;

import android.os.RemoteException;

import android.os.ServiceManager;

import android.os.storage.DiskInfo;

import android.os.storage.IMountService;

import android.os.storage.VolumeInfo;

import android.util.Log;

public final class Sm {

    private static final String TAG = "Sm";

    IMountService mSm;

    private String[] mArgs;

    private int mNextArg;

    private String mCurArgData;

    public static void main(String[] args) {

        boolean success = false;

        try {

            new Sm().run(args);

            success = true;

        } catch (Exception e) {

            if (e instanceof IllegalArgumentException) {

                showUsage();

            }

            Log.e(TAG, "Error", e);

            System.err.println("Error: " + e);

        }

        System.exit(success ? 0 : 1);

    }

    public void run(String[] args) throws Exception {

        if (args.length < 1) {

            throw new IllegalArgumentException();

        }

        mSm = IMountService.Stub.asInterface(ServiceManager.getService("mount"));

        if (mSm == null) {

            throw new RemoteException("Failed to find running mount service");

        }

        mArgs = args;

        String op = args[0];

        mNextArg = 1;

        if ("list-disks".equals(op)) {

            runListDisks();

        } else if ("list-volumes".equals(op)) {

            runListVolumes();

        } else if ("get-primary-storage-uuid".equals(op)) {

            runGetPrimaryStorageUuid();

        } else if ("partition".equals(op)) {

            runPartition();

        } else if ("mount".equals(op)) {

            runMount();

        } else if ("unmount".equals(op)) {

            runUnmount();

        } else if ("format".equals(op)) {

            runFormat();

        } else if ("forget".equals(op)) {

            runForget();

        } else {

            throw new IllegalArgumentException();

        }

    }

    public void runListDisks() throws RemoteException {

        final DiskInfo[] disks = mSm.getDisks();

        for (DiskInfo disk : disks) {

            System.out.println(disk.getId());

        }

    }

    public void runListVolumes() throws RemoteException {

        final String filter = nextArg();

        final int filterType;

        if ("public".equals(filter)) {

            filterType = VolumeInfo.TYPE_PUBLIC;

        } else if ("private".equals(filter)) {

            filterType = VolumeInfo.TYPE_PRIVATE;

        } else if ("emulated".equals(filter)) {

            filterType = VolumeInfo.TYPE_EMULATED;

        } else {

            filterType = -1;

        }

        final VolumeInfo[] vols = mSm.getVolumes(0);

        for (VolumeInfo vol : vols) {

            if (filterType == -1 || filterType == vol.getType()) {

                final String envState = VolumeInfo.getEnvironmentForState(vol.getState());

                System.out.println(vol.getId() + " " + envState + " " + vol.getFsUuid());

            }

        }

    }

    public void runGetPrimaryStorageUuid() throws RemoteException{

        System.out.println(mSm.getPrimaryStorageUuid());

    }

    public void runPartition() throws RemoteException {

        final String diskId = nextArg();

        final String type = nextArg();

        if ("public".equals(type)) {

            mSm.partitionPublic(diskId);

        } else if ("private".equals(type)) {

            mSm.partitionPrivate(diskId);

        } else if ("mixed".equals(type)) {

            final int ratio = Integer.parseInt(nextArg());

            mSm.partitionMixed(diskId, ratio);

        } else {

            throw new IllegalArgumentException("Unsupported partition type " + type);

        }

    }

    public void runMount() throws RemoteException {

        final String volId = nextArg();

        mSm.mount(volId);

    }

    public void runUnmount() throws RemoteException {

        final String volId = nextArg();

        mSm.unmount(volId);

    }

    public void runFormat() throws RemoteException {

        final String volId = nextArg();

        mSm.format(volId);

    }

    public void runForget() throws RemoteException{

        final String fsUuid = nextArg();

        if ("all".equals(fsUuid)) {

            mSm.forgetAllVolumes();

        } else {

            mSm.forgetVolume(fsUuid);

        }

    }

    private String nextArg() {

        if (mNextArg >= mArgs.length) {

            return null;

        }

        String arg = mArgs[mNextArg];

        mNextArg++;

        return arg;

    }

    private static int showUsage() {

        System.err.println("usage: sm list-disks");

        System.err.println("       sm list-volumes [public|private|emulated|all]");

        System.err.println("       sm get-primary-storage-uuid");

        System.err.println("");

        System.err.println("       sm partition DISK [public|private|mixed] [ratio]");

        System.err.println("       sm mount VOLUME");

        System.err.println("       sm unmount VOLUME");

        System.err.println("       sm format VOLUME");

        System.err.println("");

        System.err.println("       sm forget [UUID|all]");

        System.err.println("");

        return 1;

    }

}