fd3dc3c076
Also remove some unnecessary SELinux logic when creating image files for loop devices. Test: builds, boots, common operations work Bug: 34903607 Change-Id: I68dfa022ecc39f56c175e786694e0de35b954ca0
124 lines
4.4 KiB
C++
124 lines
4.4 KiB
C++
/*
|
|
* 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.
|
|
*/
|
|
|
|
#ifndef ANDROID_VOLD_UTILS_H
|
|
#define ANDROID_VOLD_UTILS_H
|
|
|
|
#include <utils/Errors.h>
|
|
#include <cutils/multiuser.h>
|
|
#include <selinux/selinux.h>
|
|
|
|
#include <vector>
|
|
#include <string>
|
|
|
|
// DISALLOW_COPY_AND_ASSIGN disallows the copy and operator= functions. It goes in the private:
|
|
// declarations in a class.
|
|
#if !defined(DISALLOW_COPY_AND_ASSIGN)
|
|
#define DISALLOW_COPY_AND_ASSIGN(TypeName) \
|
|
TypeName(const TypeName&) = delete; \
|
|
void operator=(const TypeName&) = delete
|
|
#endif
|
|
|
|
struct DIR;
|
|
|
|
namespace android {
|
|
namespace vold {
|
|
|
|
/* SELinux contexts used depending on the block device type */
|
|
extern security_context_t sBlkidContext;
|
|
extern security_context_t sBlkidUntrustedContext;
|
|
extern security_context_t sFsckContext;
|
|
extern security_context_t sFsckUntrustedContext;
|
|
|
|
status_t CreateDeviceNode(const std::string& path, dev_t dev);
|
|
status_t DestroyDeviceNode(const std::string& path);
|
|
|
|
/* fs_prepare_dir wrapper that creates with SELinux context */
|
|
status_t PrepareDir(const std::string& path, mode_t mode, uid_t uid, gid_t gid);
|
|
|
|
/* Really unmounts the path, killing active processes along the way */
|
|
status_t ForceUnmount(const std::string& path);
|
|
|
|
/* Kills any processes using given path */
|
|
status_t KillProcessesUsingPath(const std::string& path);
|
|
|
|
/* Creates bind mount from source to target */
|
|
status_t BindMount(const std::string& source, const std::string& target);
|
|
|
|
/* Reads filesystem metadata from device at path */
|
|
status_t ReadMetadata(const std::string& path, std::string& fsType,
|
|
std::string& fsUuid, std::string& fsLabel);
|
|
|
|
/* Reads filesystem metadata from untrusted device at path */
|
|
status_t ReadMetadataUntrusted(const std::string& path, std::string& fsType,
|
|
std::string& fsUuid, std::string& fsLabel);
|
|
|
|
/* Returns either WEXITSTATUS() status, or a negative errno */
|
|
status_t ForkExecvp(const std::vector<std::string>& args);
|
|
status_t ForkExecvp(const std::vector<std::string>& args, security_context_t context);
|
|
|
|
status_t ForkExecvp(const std::vector<std::string>& args,
|
|
std::vector<std::string>& output);
|
|
status_t ForkExecvp(const std::vector<std::string>& args,
|
|
std::vector<std::string>& output, security_context_t context);
|
|
|
|
pid_t ForkExecvpAsync(const std::vector<std::string>& args);
|
|
|
|
status_t ReadRandomBytes(size_t bytes, std::string& out);
|
|
|
|
/* Converts hex string to raw bytes, ignoring [ :-] */
|
|
status_t HexToStr(const std::string& hex, std::string& str);
|
|
/* Converts raw bytes to hex string */
|
|
status_t StrToHex(const std::string& str, std::string& hex);
|
|
/* Normalize given hex string into consistent format */
|
|
status_t NormalizeHex(const std::string& in, std::string& out);
|
|
|
|
uint64_t GetFreeBytes(const std::string& path);
|
|
uint64_t GetTreeBytes(const std::string& path);
|
|
|
|
bool IsFilesystemSupported(const std::string& fsType);
|
|
|
|
/* Wipes contents of block device at given path */
|
|
status_t WipeBlockDevice(const std::string& path);
|
|
|
|
std::string BuildKeyPath(const std::string& partGuid);
|
|
|
|
std::string BuildDataSystemLegacyPath(userid_t userid);
|
|
std::string BuildDataSystemCePath(userid_t userid);
|
|
std::string BuildDataSystemDePath(userid_t userid);
|
|
std::string BuildDataMiscLegacyPath(userid_t userid);
|
|
std::string BuildDataMiscCePath(userid_t userid);
|
|
std::string BuildDataMiscDePath(userid_t userid);
|
|
std::string BuildDataProfilesDePath(userid_t userid);
|
|
|
|
std::string BuildDataPath(const char* volumeUuid);
|
|
std::string BuildDataMediaCePath(const char* volumeUuid, userid_t userid);
|
|
std::string BuildDataUserCePath(const char* volumeUuid, userid_t userid);
|
|
std::string BuildDataUserDePath(const char* volumeUuid, userid_t userid);
|
|
|
|
dev_t GetDevice(const std::string& path);
|
|
|
|
status_t RestoreconRecursive(const std::string& path);
|
|
|
|
status_t SaneReadLinkAt(int dirfd, const char* path, char* buf, size_t bufsiz);
|
|
|
|
/* Checks if Android is running in QEMU */
|
|
bool IsRunningInEmulator();
|
|
|
|
} // namespace vold
|
|
} // namespace android
|
|
|
|
#endif
|