5e62b34c0d
Use <android-base/macros.h> instead where possible, and move the bionic macros out of the way of the libbase ones. Yes, there are folks who manage to end up with both included at once (thanks OpenGL!), and cleaning that up doesn't seem nearly as practical as just making this change. Bug: N/A Test: builds Change-Id: I23fc544f39d5addf81dc61471771a5438778895b
101 lines
2.9 KiB
C++
101 lines
2.9 KiB
C++
/*
|
|
* Copyright (C) 2018 The Android Open Source Project
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* * Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* * Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in
|
|
* the documentation and/or other materials provided with the
|
|
* distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
|
|
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
|
|
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
|
|
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
|
|
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
|
|
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
|
|
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
|
|
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include <grp.h>
|
|
#include <pwd.h>
|
|
|
|
#include "private/bionic_lock.h"
|
|
#include "private/bionic_macros.h"
|
|
#include "private/grp_pwd.h"
|
|
|
|
class MmapFile {
|
|
public:
|
|
MmapFile(const char* filename, const char* required_prefix);
|
|
|
|
template <typename Line>
|
|
bool FindById(uid_t uid, Line* line);
|
|
template <typename Line>
|
|
bool FindByName(const char* name, Line* line);
|
|
void Unmap();
|
|
|
|
BIONIC_DISALLOW_IMPLICIT_CONSTRUCTORS(MmapFile);
|
|
|
|
private:
|
|
enum class FileStatus {
|
|
Uninitialized,
|
|
Initialized,
|
|
Error,
|
|
};
|
|
|
|
bool GetFile(const char** start, const char** end);
|
|
bool DoMmap();
|
|
|
|
template <typename Line, typename Predicate>
|
|
bool Find(Line* line, Predicate predicate);
|
|
|
|
FileStatus status_ = FileStatus::Uninitialized;
|
|
Lock lock_;
|
|
const char* filename_ = nullptr;
|
|
const char* start_ = nullptr;
|
|
const char* end_ = nullptr;
|
|
const char* required_prefix_;
|
|
};
|
|
|
|
class PasswdFile {
|
|
public:
|
|
PasswdFile(const char* filename, const char* required_prefix);
|
|
|
|
bool FindById(uid_t id, passwd_state_t* passwd_state);
|
|
bool FindByName(const char* name, passwd_state_t* passwd_state);
|
|
void Unmap() {
|
|
mmap_file_.Unmap();
|
|
}
|
|
|
|
BIONIC_DISALLOW_IMPLICIT_CONSTRUCTORS(PasswdFile);
|
|
|
|
private:
|
|
MmapFile mmap_file_;
|
|
};
|
|
|
|
class GroupFile {
|
|
public:
|
|
GroupFile(const char* filename, const char* required_prefix);
|
|
|
|
bool FindById(gid_t id, group_state_t* group_state);
|
|
bool FindByName(const char* name, group_state_t* group_state);
|
|
void Unmap() {
|
|
mmap_file_.Unmap();
|
|
}
|
|
|
|
BIONIC_DISALLOW_IMPLICIT_CONSTRUCTORS(GroupFile);
|
|
|
|
private:
|
|
MmapFile mmap_file_;
|
|
};
|