1/*
2 * Copyright (C) 2008 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#ifndef _DEVMAPPER_H
18#define _DEVMAPPER_H
19
20#include <unistd.h>
21#include <linux/dm-ioctl.h>
22
23class SocketClient;
24
25class Devmapper {
26public:
27    static int create(const char *name, const char *loopFile, const char *key,
28                      unsigned int numSectors, char *buffer, size_t len);
29    static int destroy(const char *name);
30    static int lookupActive(const char *name, char *buffer, size_t len);
31    static int dumpState(SocketClient *c);
32
33private:
34    static void *_align(void *ptr, unsigned int a);
35    static void ioctlInit(struct dm_ioctl *io, size_t data_size,
36                          const char *name, unsigned flags);
37};
38
39#endif
40