imapext-2007
annotate src/osdep/unix/flockcyg.h @ 0:ada5e610ab86
imap-2007e
| author | yuuji@gentei.org |
|---|---|
| date | Mon, 14 Sep 2009 15:17:45 +0900 |
| parents | |
| children |
| rev | line source |
|---|---|
| yuuji@0 | 1 /* ======================================================================== |
| yuuji@0 | 2 * Copyright 1988-2006 University of Washington |
| yuuji@0 | 3 * |
| yuuji@0 | 4 * Licensed under the Apache License, Version 2.0 (the "License"); |
| yuuji@0 | 5 * you may not use this file except in compliance with the License. |
| yuuji@0 | 6 * You may obtain a copy of the License at |
| yuuji@0 | 7 * |
| yuuji@0 | 8 * http://www.apache.org/licenses/LICENSE-2.0 |
| yuuji@0 | 9 * |
| yuuji@0 | 10 * |
| yuuji@0 | 11 * ======================================================================== |
| yuuji@0 | 12 */ |
| yuuji@0 | 13 |
| yuuji@0 | 14 /* |
| yuuji@0 | 15 * Program: flock() emulation via fcntl() locking |
| yuuji@0 | 16 * |
| yuuji@0 | 17 * Author: Mark Crispin |
| yuuji@0 | 18 * Networks and Distributed Computing |
| yuuji@0 | 19 * Computing & Communications |
| yuuji@0 | 20 * University of Washington |
| yuuji@0 | 21 * Administration Building, AG-44 |
| yuuji@0 | 22 * Seattle, WA 98195 |
| yuuji@0 | 23 * Internet: MRC@CAC.Washington.EDU |
| yuuji@0 | 24 * |
| yuuji@0 | 25 * Date: 10 April 2001 |
| yuuji@0 | 26 * Last Edited: 30 August 2006 |
| yuuji@0 | 27 */ |
| yuuji@0 | 28 |
| yuuji@0 | 29 /* Cygwin does not seem to have the design flaw in fcntl() locking that |
| yuuji@0 | 30 * most other systems do (see flocksim.c for details). If some cretin |
| yuuji@0 | 31 * decides to implement that design flaw, then Cygwin will have to use |
| yuuji@0 | 32 * flocksim. Also, we don't test NFS either |
| yuuji@0 | 33 */ |
| yuuji@0 | 34 |
| yuuji@0 | 35 |
| yuuji@0 | 36 #define flock flocksim /* use ours instead of theirs */ |
| yuuji@0 | 37 |
| yuuji@0 | 38 #undef LOCK_SH |
| yuuji@0 | 39 #define LOCK_SH 1 /* shared lock */ |
| yuuji@0 | 40 #undef LOCK_EX |
| yuuji@0 | 41 #define LOCK_EX 2 /* exclusive lock */ |
| yuuji@0 | 42 #undef LOCK_NB |
| yuuji@0 | 43 #define LOCK_NB 4 /* no blocking */ |
| yuuji@0 | 44 #undef LOCK_UN |
| yuuji@0 | 45 #define LOCK_UN 8 /* unlock */ |
| yuuji@0 | 46 |
| yuuji@0 | 47 |
| yuuji@0 | 48 /* Function prototypes */ |
| yuuji@0 | 49 |
| yuuji@0 | 50 int flocksim (int fd,int operation); |