66 lines
2.1 KiB
C
66 lines
2.1 KiB
C
/*
|
|
* This file Copyright (C) 2008 Charles Kerr <charles@transmissionbt.com>
|
|
*
|
|
* This file is licensed by the GPL version 2. Works owned by the
|
|
* Transmission project are granted a special exemption to clause 2(b)
|
|
* so that the bulk of its code can remain under the MIT license.
|
|
* This exemption does not extend to derived works not owned by
|
|
* the Transmission project.
|
|
*
|
|
* $Id$
|
|
*/
|
|
|
|
#ifndef __TRANSMISSION__
|
|
#error only libtransmission should #include this header.
|
|
#endif
|
|
|
|
#ifndef TR_IO_H
|
|
#define TR_IO_H 1
|
|
|
|
struct tr_torrent;
|
|
|
|
/**
|
|
* Reads the block specified by the piece index, offset, and length.
|
|
* @return 0 on success, or an errno value on failure.
|
|
*/
|
|
int tr_ioRead( const struct tr_torrent * tor,
|
|
tr_piece_index_t pieceIndex,
|
|
uint32_t offset,
|
|
uint32_t len,
|
|
uint8_t * setme );
|
|
|
|
/**
|
|
* Writes the block specified by the piece index, offset, and length.
|
|
* @return 0 on success, or an errno value on failure.
|
|
*/
|
|
int tr_ioWrite( const struct tr_torrent * tor,
|
|
tr_piece_index_t pieceIndex,
|
|
uint32_t offset,
|
|
uint32_t len,
|
|
const uint8_t * writeme );
|
|
|
|
/**
|
|
* @brief Test to see if the piece matches its metainfo's SHA1 checksum.
|
|
*
|
|
* @param optionalBuffer if calling tr_ioTestPiece() repeatedly, you can
|
|
* get best performance by providing a buffer with
|
|
* tor->info.pieceSize bytes.
|
|
*/
|
|
tr_bool tr_ioTestPiece( const tr_torrent * tor,
|
|
tr_piece_index_t piece,
|
|
void * optionalBuffer,
|
|
size_t optionalBufferLen );
|
|
|
|
|
|
/**
|
|
* Converts a piece index + offset into a file index + offset.
|
|
*/
|
|
void tr_ioFindFileLocation( const tr_torrent * tor,
|
|
tr_piece_index_t pieceIndex,
|
|
uint32_t pieceOffset,
|
|
tr_file_index_t * fileIndex,
|
|
uint64_t * fileOffset );
|
|
|
|
|
|
#endif
|