New "sm" shell tool to call StorageManager.

Surface basic StorageManager commands through shell tool, like
simple listing of disks and volumes, and commands like mounting and
partitioning.

The output is designed to be parsed by host-side testing tools,
instead of relying on fragile dumpsys parsing.

Bug: 19993667
Change-Id: I993e92ecf57996678965945f0ae648b392a77ea2

1 files changed, 180 insertions, 0 deletions

diff --git a/cmds/sm/src/com/android/commands/sm/Sm.java b/cmds/sm/src/com/android/commands/sm/Sm.java
new file mode 100644
index 0000000..4d83610
--- /dev/null
+++ b/cmds/sm/src/com/android/commands/sm/Sm.java
@@ -0,0 +1,180 @@
+/*
+ * 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;
+    }
+}