110 lines
4.2 KiB
C++
110 lines
4.2 KiB
C++
/*
|
|
|
|
Copyright (c) 2003-2016, 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_STORAGE_UTILS_HPP_INCLUDE
|
|
#define TORRENT_STORAGE_UTILS_HPP_INCLUDE
|
|
|
|
#include <cstdint>
|
|
|
|
#include "libtorrent/config.hpp"
|
|
#include "libtorrent/span.hpp"
|
|
#include "libtorrent/aux_/typed_span.hpp"
|
|
#include "libtorrent/units.hpp"
|
|
#include "libtorrent/storage_defs.hpp" // for status_t
|
|
#include "libtorrent/session_types.hpp"
|
|
|
|
namespace libtorrent {
|
|
|
|
class file_storage;
|
|
struct part_file;
|
|
struct storage_error;
|
|
struct stat_cache;
|
|
struct add_torrent_params;
|
|
|
|
// TODO: 3 remove this typedef, and use span<char const> for disk write
|
|
// operations
|
|
using iovec_t = span<char>;
|
|
|
|
namespace aux {
|
|
|
|
TORRENT_EXTRA_EXPORT int copy_bufs(span<iovec_t const> bufs
|
|
, int bytes, span<iovec_t> target);
|
|
TORRENT_EXTRA_EXPORT typed_span<iovec_t> advance_bufs(typed_span<iovec_t> bufs, int bytes);
|
|
TORRENT_EXTRA_EXPORT void clear_bufs(span<iovec_t const> bufs);
|
|
|
|
// this is a read or write operation so that readwritev() knows
|
|
// what to do when it's actually touching the file
|
|
using fileop = std::function<int(file_index_t, std::int64_t, span<iovec_t const>, storage_error&)>;
|
|
|
|
// this function is responsible for turning read and write operations in the
|
|
// torrent space (pieces) into read and write operations in the filesystem
|
|
// space (files on disk).
|
|
TORRENT_EXTRA_EXPORT int readwritev(file_storage const& files
|
|
, span<iovec_t const> bufs, piece_index_t piece, int offset
|
|
, storage_error& ec, fileop op);
|
|
|
|
// moves the files in file_storage f from ``save_path`` to
|
|
// ``destination_save_path`` according to the rules defined by ``flags``.
|
|
// returns the status code and the new save_path.
|
|
TORRENT_EXTRA_EXPORT std::pair<status_t, std::string>
|
|
move_storage(file_storage const& f
|
|
, std::string const& save_path
|
|
, std::string const& destination_save_path
|
|
, part_file* pf
|
|
, move_flags_t flags, storage_error& ec);
|
|
|
|
// deletes the files on fs from save_path according to options. Options may
|
|
// opt to only delete the partfile
|
|
TORRENT_EXTRA_EXPORT void
|
|
delete_files(file_storage const& fs, std::string const& save_path
|
|
, std::string const& part_file_name, remove_flags_t const options, storage_error& ec);
|
|
|
|
TORRENT_EXTRA_EXPORT bool
|
|
verify_resume_data(add_torrent_params const& rd
|
|
, aux::vector<std::string, file_index_t> const& links
|
|
, file_storage const& fs
|
|
, aux::vector<std::uint8_t, file_index_t> const& file_priority
|
|
, stat_cache& stat
|
|
, std::string const& save_path
|
|
, storage_error& ec);
|
|
|
|
// given the save_path, stat all files on file_storage until one exists. If a
|
|
// file exists, return true, otherwise return false.
|
|
TORRENT_EXTRA_EXPORT bool has_any_file(
|
|
file_storage const& fs
|
|
, std::string const& save_path
|
|
, stat_cache& stat
|
|
, storage_error& ec);
|
|
}}
|
|
|
|
#endif
|