93 lines
3.5 KiB
C
93 lines
3.5 KiB
C
/******************************************************************************
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* $Id$
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*
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* Copyright (c) 2005-2006 Transmission authors and contributors
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*****************************************************************************/
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#include "net.h"
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/***********************************************************************
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* tr_fdInit
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***********************************************************************
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* Detect the maximum number of open files and initializes things.
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**********************************************************************/
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void tr_fdInit( int globalPeerLimit );
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void tr_fdClose( void );
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/**
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* Returns an fd to the specified filename.
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*
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* A small repository of open files is kept to avoid the overhead of continually
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* opening and closing the same files when writing piece data during download.
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* It's also used to ensure that only one client uses the file at a time.
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* Clients must check out a file to use it, then return it, like a library, when done.
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*
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* if write is nonzero and dirname(filename) doesn't exist, dirname is created.
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* if write is nonzero and filename doesn't exist, filename is created.
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* returns the fd if successful; otherwise, one of TR_ERROR_IO_*
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*
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* @see tr_fdFileReturn
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* @see tr_fdFileClose
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*/
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int tr_fdFileCheckout( const char * filename, int write );
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/**
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* Returns an fd from tr_fdFileCheckout() so that other clients may borrow it.
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*
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* @see tr_fdFileCheckout
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* @see tr_fdFileClose
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*/
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void tr_fdFileReturn( int file );
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/**
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* Closes a file that's being held by our file repository.
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*
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* If the file isn't checked out, it's closed immediately.
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* If the file is currently checked out, it will be closed upon its return.
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*
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* @see tr_fdFileCheckout
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* @see tr_fdFileReturn
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*/
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void tr_fdFileClose( const char * filename );
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/***********************************************************************
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* Sockets
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**********************************************************************/
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int tr_fdSocketCreate( int type, int priority );
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int tr_fdSocketAccept( int b, struct in_addr * addr, tr_port_t * port );
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void tr_fdSocketClose( int s );
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/***********************************************************************
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* tr_fdClose
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***********************************************************************
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* Frees resources allocated by tr_fdInit.
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**********************************************************************/
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void tr_fdClose( void );
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void tr_fdSetPeerLimit( uint16_t n );
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uint16_t tr_fdGetPeerLimit( void );
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