transmission/libtransmission/inout.h

68 lines
1.8 KiB
C

/*
* This file Copyright (C) 2007-2014 Mnemosyne LLC
*
* It may be used under the GNU GPL versions 2 or 3
* or any future license endorsed by Mnemosyne LLC.
*
* $Id$
*/
#ifndef __TRANSMISSION__
#error only libtransmission should #include this header.
#endif
#ifndef TR_IO_H
#define TR_IO_H 1
struct tr_torrent;
/**
* @addtogroup file_io File IO
* @{
*/
/**
* Reads the block specified by the piece index, offset, and length.
* @return 0 on success, or an errno value on failure.
*/
int tr_ioRead (struct tr_torrent * tor,
tr_piece_index_t pieceIndex,
uint32_t offset,
uint32_t len,
uint8_t * setme);
int tr_ioPrefetch (tr_torrent * tor,
tr_piece_index_t pieceIndex,
uint32_t begin,
uint32_t len);
/**
* Writes the block specified by the piece index, offset, and length.
* @return 0 on success, or an errno value on failure.
*/
int tr_ioWrite (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.
*/
bool tr_ioTestPiece (tr_torrent * tor,
tr_piece_index_t piece);
/**
* 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