172 lines
4.3 KiB
C++
172 lines
4.3 KiB
C++
/*
|
|
|
|
Copyright (c) 2003, Arvid Norberg
|
|
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.
|
|
* Neither the name of the author nor the names of its
|
|
contributors may be used to endorse or promote products derived
|
|
from this software without specific prior written permission.
|
|
|
|
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.
|
|
|
|
*/
|
|
|
|
#ifndef TORRENT_FILE_HPP_INCLUDED
|
|
#define TORRENT_FILE_HPP_INCLUDED
|
|
|
|
#include <memory>
|
|
#include <string>
|
|
#include <vector>
|
|
|
|
#ifdef _MSC_VER
|
|
#pragma warning(push, 1)
|
|
#endif
|
|
|
|
#include <boost/noncopyable.hpp>
|
|
#include <boost/filesystem/path.hpp>
|
|
|
|
#ifdef _MSC_VER
|
|
#pragma warning(pop)
|
|
#endif
|
|
|
|
#include "libtorrent/error_code.hpp"
|
|
#include "libtorrent/size_type.hpp"
|
|
#include "libtorrent/config.hpp"
|
|
|
|
#ifdef TORRENT_WINDOWS
|
|
// windows part
|
|
#include <windows.h>
|
|
#include <winioctl.h>
|
|
#else
|
|
// posix part
|
|
#define _FILE_OFFSET_BITS 64
|
|
|
|
#ifndef _GNU_SOURCE
|
|
#define _GNU_SOURCE
|
|
#endif
|
|
|
|
#ifndef _XOPEN_SOURCE
|
|
#define _XOPEN_SOURCE 600
|
|
#endif
|
|
|
|
#include <unistd.h>
|
|
#include <sys/uio.h>
|
|
#include <fcntl.h>
|
|
#include <sys/stat.h>
|
|
#include <sys/types.h>
|
|
#endif
|
|
namespace libtorrent
|
|
{
|
|
namespace fs = boost::filesystem;
|
|
|
|
class TORRENT_EXPORT file: public boost::noncopyable
|
|
{
|
|
public:
|
|
|
|
enum
|
|
{
|
|
// when a file is opened with no_buffer
|
|
// file offsets have to be aligned to
|
|
// pages and buffer addresses and sizes
|
|
// have to be page aligned too
|
|
#ifdef TORRENT_WINDOWS
|
|
read_only = GENERIC_READ,
|
|
write_only = GENERIC_WRITE,
|
|
read_write = GENERIC_READ | GENERIC_WRITE,
|
|
no_buffer = 1,
|
|
attribute_hidden = FILE_ATTRIBUTE_HIDDEN,
|
|
attribute_executable = 0,
|
|
#else
|
|
read_only = O_RDONLY,
|
|
write_only = O_WRONLY | O_CREAT,
|
|
read_write = O_RDWR | O_CREAT,
|
|
#if defined O_DIRECT
|
|
no_buffer = O_DIRECT,
|
|
#else
|
|
no_buffer = O_SYNC,
|
|
#endif
|
|
attribute_hidden = 0,
|
|
attribute_executable = 0x100000,
|
|
#endif
|
|
rw_mask = read_only | write_only | read_write,
|
|
attribute_mask = attribute_hidden | attribute_executable
|
|
};
|
|
|
|
#ifdef TORRENT_WINDOWS
|
|
struct iovec_t
|
|
{
|
|
void* iov_base;
|
|
size_t iov_len;
|
|
};
|
|
#else
|
|
typedef iovec iovec_t;
|
|
#endif
|
|
|
|
file();
|
|
file(fs::path const& p, int m, error_code& ec);
|
|
~file();
|
|
|
|
bool open(fs::path const& p, int m, error_code& ec);
|
|
bool is_open() const;
|
|
void close();
|
|
bool set_size(size_type size, error_code& ec);
|
|
|
|
int open_mode() const { return m_open_mode; }
|
|
|
|
// when opened in unbuffered mode, this is the
|
|
// required alignment of file_offsets. i.e.
|
|
// any (file_offset & (pos_alignment()-1)) == 0
|
|
// is a precondition
|
|
int pos_alignment() const;
|
|
|
|
size_type writev(size_type file_offset, iovec_t const* bufs, int num_bufs, error_code& ec);
|
|
size_type readv(size_type file_offset, iovec_t const* bufs, int num_bufs, error_code& ec);
|
|
|
|
size_type get_size(error_code& ec);
|
|
|
|
private:
|
|
|
|
#ifdef TORRENT_WINDOWS
|
|
HANDLE m_file_handle;
|
|
#ifdef TORRENT_USE_WPATH
|
|
std::wstring m_path;
|
|
#else
|
|
std::string m_path;
|
|
#endif
|
|
#else
|
|
int m_fd;
|
|
#endif
|
|
#if defined TORRENT_WINDOWS || defined TORRENT_LINUX || defined TORRENT_DEBUG
|
|
static void init_file();
|
|
static int m_page_size;
|
|
#endif
|
|
int m_open_mode;
|
|
#if defined TORRENT_WINDOWS || defined TORRENT_LINUX
|
|
mutable int m_sector_size;
|
|
#endif
|
|
};
|
|
|
|
}
|
|
|
|
#endif // TORRENT_FILE_HPP_INCLUDED
|
|
|