/* ======================================================================== * Copyright 1988-2006 University of Washington * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * * ======================================================================== */ /* * Program: flock() emulation via fcntl() locking * * Author: Mark Crispin * Networks and Distributed Computing * Computing & Communications * University of Washington * Administration Building, AG-44 * Seattle, WA 98195 * Internet: MRC@CAC.Washington.EDU * * Date: 10 April 2001 * Last Edited: 30 August 2006 */ /* Cygwin does not seem to have the design flaw in fcntl() locking that * most other systems do (see flocksim.c for details). If some cretin * decides to implement that design flaw, then Cygwin will have to use * flocksim. Also, we don't test NFS either */ #define flock flocksim /* use ours instead of theirs */ #undef LOCK_SH #define LOCK_SH 1 /* shared lock */ #undef LOCK_EX #define LOCK_EX 2 /* exclusive lock */ #undef LOCK_NB #define LOCK_NB 4 /* no blocking */ #undef LOCK_UN #define LOCK_UN 8 /* unlock */ /* Function prototypes */ int flocksim (int fd,int operation);

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