source: trunk/libtransmission/fdlimit.h @ 12918

Last change on this file since 12918 was 12582, checked in by jordan, 10 years ago

(trunk libt) #4305 "New Torrent via RPC Error:No data found when subfolder does not exist" -- revert r12076 s.t. parent directories are created as necessary when saving local data to disk.

  • Property svn:keywords set to Date Rev Author Id
File size: 3.6 KB
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1/*
2 * This file Copyright (C) Mnemosyne LLC
3 *
4 * This file is licensed by the GPL version 2. Works owned by the
5 * Transmission project are granted a special exemption to clause 2(b)
6 * so that the bulk of its code can remain under the MIT license.
7 * This exemption does not extend to derived works not owned by
8 * the Transmission project.
9 *
10 * $Id: fdlimit.h 12582 2011-07-25 17:48:14Z jordan $
11 */
12
13#ifndef __TRANSMISSION__
14 #error only libtransmission should #include this header.
15#endif
16
17#include "transmission.h"
18#include "net.h"
19
20/**
21 * @addtogroup file_io File IO
22 * @{
23 */
24
25/***
26****
27***/
28
29void tr_set_file_for_single_pass( int fd );
30
31int tr_open_file_for_scanning( const char * filename );
32
33int tr_open_file_for_writing( const char * filename );
34
35void tr_close_file( int fd );
36
37int tr_fsync(int fd);
38
39ssize_t tr_pread(int fd, void *buf, size_t count, off_t offset);
40ssize_t tr_pwrite(int fd, const void *buf, size_t count, off_t offset);
41int tr_prefetch(int fd, off_t offset, size_t count);
42
43
44/**
45 * Returns an fd to the specified filename.
46 *
47 * A small pool of open files is kept to avoid the overhead of
48 * continually opening and closing the same files when downloading
49 * piece data.
50 *
51 * - if do_write is true, subfolders in torrentFile are created if necessary.
52 * - if do_write is true, the target file is created if necessary.
53 *
54 * on success, a file descriptor >= 0 is returned.
55 * on failure, a -1 is returned and errno is set.
56 *
57 * @see tr_fdFileClose
58 */
59int  tr_fdFileCheckout( tr_session             * session,
60                        int                      torrent_id,
61                        tr_file_index_t          file_num,
62                        const char             * filename,
63                        bool                     do_write,
64                        tr_preallocation_mode    preallocation_mode,
65                        uint64_t                 preallocation_file_size );
66
67int tr_fdFileGetCached( tr_session             * session,
68                        int                      torrent_id,
69                        tr_file_index_t          file_num,
70                        bool                  doWrite );
71
72bool tr_fdFileGetCachedMTime( tr_session       * session,
73                              int                torrent_id,
74                              tr_file_index_t    file_num,
75                              time_t           * mtime );
76
77
78/**
79 * Closes a file that's being held by our file repository.
80 *
81 * If the file isn't checked out, it's fsync()ed and close()d immediately.
82 * If the file is currently checked out, it will be closed upon its return.
83 *
84 * @see tr_fdFileCheckout
85 */
86void tr_fdFileClose( tr_session        * session,
87                     const tr_torrent  * tor,
88                     tr_file_index_t     file_num );
89
90
91/**
92 * Closes all the files associated with a given torrent id
93 */
94void tr_fdTorrentClose( tr_session * session, int torrentId );
95
96
97/***********************************************************************
98 * Sockets
99 **********************************************************************/
100int      tr_fdSocketCreate( tr_session * session, int domain, int type );
101
102int      tr_fdSocketAccept( tr_session  * session,
103                            int           listening_sockfd,
104                            tr_address  * addr,
105                            tr_port     * port );
106
107void     tr_fdSocketClose( tr_session * session, int s );
108
109/***********************************************************************
110 * tr_fdClose
111 ***********************************************************************
112 * Frees resources allocated by tr_fdInit.
113 **********************************************************************/
114void     tr_fdClose( tr_session * session );
115
116/* @} */
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