mirror of
https://github.com/transmission/transmission
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64 lines
1.7 KiB
C
64 lines
1.7 KiB
C
/*
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* This file Copyright (C) 2007-2014 Mnemosyne LLC
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*
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* It may be used under the GNU GPL versions 2 or 3
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* or any future license endorsed by Mnemosyne LLC.
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*
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*/
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#ifndef __TRANSMISSION__
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#error only libtransmission should #include this header.
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#endif
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#pragma once
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struct tr_torrent;
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/**
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* @addtogroup file_io File IO
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* @{
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*/
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/**
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* Reads the block specified by the piece index, offset, and length.
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* @return 0 on success, or an errno value on failure.
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*/
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int tr_ioRead (struct tr_torrent * tor,
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tr_piece_index_t pieceIndex,
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uint32_t offset,
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uint32_t len,
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uint8_t * setme);
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int tr_ioPrefetch (tr_torrent * tor,
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tr_piece_index_t pieceIndex,
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uint32_t begin,
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uint32_t len);
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/**
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* Writes the block specified by the piece index, offset, and length.
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* @return 0 on success, or an errno value on failure.
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*/
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int tr_ioWrite (struct tr_torrent * tor,
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tr_piece_index_t pieceIndex,
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uint32_t offset,
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uint32_t len,
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const uint8_t * writeme);
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/**
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* @brief Test to see if the piece matches its metainfo's SHA1 checksum.
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*/
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bool tr_ioTestPiece (tr_torrent * tor,
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tr_piece_index_t piece);
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/**
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* Converts a piece index + offset into a file index + offset.
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*/
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void tr_ioFindFileLocation (const tr_torrent * tor,
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tr_piece_index_t pieceIndex,
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uint32_t pieceOffset,
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tr_file_index_t * fileIndex,
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uint64_t * fileOffset);
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/* @} */
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