/usr/include/mongo/util/file.h is in mongodb-dev 1:2.4.9-1ubuntu2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 | // file.h cross platform basic file class. supports 64 bit offsets and such.
/* Copyright 2009 10gen Inc.
*
* 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.
*/
#pragma once
#include <boost/cstdint.hpp>
#include <string>
#include "mongo/platform/basic.h"
#include "mongo/platform/cstdint.h"
namespace mongo {
typedef uint64_t fileofs;
// NOTE: not thread-safe. (at least the windows implementation isn't)
class File {
public:
File();
~File();
bool bad() const { return _bad; }
void fsync() const;
bool is_open() const;
fileofs len();
void open(const char* filename, bool readOnly = false, bool direct = false);
void read(fileofs o, char* data, unsigned len);
void truncate(fileofs size);
void write(fileofs o, const char* data, unsigned len);
static boost::intmax_t freeSpace(const std::string& path);
private:
bool _bad;
#ifdef _WIN32
HANDLE _handle;
#else
int _fd;
#endif
std::string _name;
};
}
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