transmission/libtransmission/fdlimit.h

100 lines
3.2 KiB
C

/*
* This file Copyright (C) 2005-2014 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
#include "transmission.h"
#include "file.h"
#include "net.h"
/**
* @addtogroup file_io File IO
* @{
*/
/***
****
***/
/**
* Returns an fd to the specified filename.
*
* A small pool of open files is kept to avoid the overhead of
* continually opening and closing the same files when downloading
* piece data.
*
* - if do_write is true, subfolders in torrentFile are created if necessary.
* - if do_write is true, the target file is created if necessary.
*
* on success, a file descriptor >= 0 is returned.
* on failure, a TR_BAD_SYS_FILE is returned and errno is set.
*
* @see tr_fdFileClose
*/
tr_sys_file_t tr_fdFileCheckout (tr_session * session,
int torrent_id,
tr_file_index_t file_num,
const char * filename,
bool do_write,
tr_preallocation_mode preallocation_mode,
uint64_t preallocation_file_size);
tr_sys_file_t tr_fdFileGetCached (tr_session * session,
int torrent_id,
tr_file_index_t file_num,
bool doWrite);
bool tr_fdFileGetCachedMTime (tr_session * session,
int torrent_id,
tr_file_index_t file_num,
time_t * mtime);
/**
* Closes a file that's being held by our file repository.
*
* If the file isn't checked out, it's fsync ()ed and close ()d immediately.
* If the file is currently checked out, it will be closed upon its return.
*
* @see tr_fdFileCheckout
*/
void tr_fdFileClose (tr_session * session,
const tr_torrent * tor,
tr_file_index_t file_num);
/**
* Closes all the files associated with a given torrent id
*/
void tr_fdTorrentClose (tr_session * session, int torrentId);
/***********************************************************************
* Sockets
**********************************************************************/
int tr_fdSocketCreate (tr_session * session, int domain, int type);
int tr_fdSocketAccept (tr_session * session,
int listening_sockfd,
tr_address * addr,
tr_port * port);
void tr_fdSocketClose (tr_session * session, int s);
/***********************************************************************
* tr_fdClose
***********************************************************************
* Frees resources allocated by tr_fdInit.
**********************************************************************/
void tr_fdClose (tr_session * session);
/* @} */