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Jeff Sharkeydeb24052015-03-02 21:01:40 -08001/*
2 * Copyright (C) 2015 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 ANDROID_VOLD_UTILS_H
18#define ANDROID_VOLD_UTILS_H
19
20#include <utils/Errors.h>
Jeff Sharkey95c87cc2015-04-01 11:54:32 -070021#include <selinux/selinux.h>
Jeff Sharkeydeb24052015-03-02 21:01:40 -080022
Jeff Sharkey9c484982015-03-31 10:35:33 -070023#include <vector>
Jeff Sharkeydeb24052015-03-02 21:01:40 -080024#include <string>
25
26// DISALLOW_COPY_AND_ASSIGN disallows the copy and operator= functions. It goes in the private:
27// declarations in a class.
28#if !defined(DISALLOW_COPY_AND_ASSIGN)
29#define DISALLOW_COPY_AND_ASSIGN(TypeName) \
30 TypeName(const TypeName&) = delete; \
31 void operator=(const TypeName&) = delete
32#endif
33
34namespace android {
35namespace vold {
36
Jeff Sharkey95c87cc2015-04-01 11:54:32 -070037/* SELinux contexts used depending on the block device type */
38extern security_context_t sBlkidContext;
39extern security_context_t sBlkidUntrustedContext;
40extern security_context_t sFsckContext;
41extern security_context_t sFsckUntrustedContext;
42
Jeff Sharkeydeb24052015-03-02 21:01:40 -080043status_t CreateDeviceNode(const std::string& path, dev_t dev);
44status_t DestroyDeviceNode(const std::string& path);
45
46/* Really unmounts the path, killing active processes along the way */
47status_t ForceUnmount(const std::string& path);
48
Jeff Sharkey36801cc2015-03-13 16:09:20 -070049/* Creates bind mount from source to target */
50status_t BindMount(const std::string& source, const std::string& target);
51
Jeff Sharkey9c484982015-03-31 10:35:33 -070052/* Reads filesystem metadata from device at path */
53status_t ReadMetadata(const std::string& path, std::string& fsType,
54 std::string& fsUuid, std::string& fsLabel);
55
Jeff Sharkey95c87cc2015-04-01 11:54:32 -070056/* Reads filesystem metadata from untrusted device at path */
57status_t ReadMetadataUntrusted(const std::string& path, std::string& fsType,
58 std::string& fsUuid, std::string& fsLabel);
59
Jeff Sharkey9c484982015-03-31 10:35:33 -070060status_t ForkExecvp(const std::vector<std::string>& args, int* status,
61 bool ignore_int_quit, bool logwrap);
62
63status_t ReadRandomBytes(size_t bytes, std::string& out);
64
Jeff Sharkey95c87cc2015-04-01 11:54:32 -070065/* Converts hex string to raw bytes, ignoring [ :-] */
Jeff Sharkey9c484982015-03-31 10:35:33 -070066status_t HexToStr(const std::string& hex, std::string& str);
Jeff Sharkey95c87cc2015-04-01 11:54:32 -070067/* Converts raw bytes to hex string */
Jeff Sharkey9c484982015-03-31 10:35:33 -070068status_t StrToHex(const std::string& str, std::string& hex);
69
Jeff Sharkeydeb24052015-03-02 21:01:40 -080070} // namespace vold
71} // namespace android
72
73#endif