filelock-darwin.cpp revision 1c94c0a63ba68be1a7b2c640e70d7a06464e4fca
c97989161fbe75bc14cea477a5443bbf474dd3advboxsync * innotek Portable Runtime - File Locking, POSIX.
1c94c0a63ba68be1a7b2c640e70d7a06464e4fcavboxsync * Copyright (C) 2006-2007 Sun Microsystems, Inc.
c7945191b700920f0ab9b951ce92cc69cb48ffb4vboxsync * This file is part of VirtualBox Open Source Edition (OSE), as
c7945191b700920f0ab9b951ce92cc69cb48ffb4vboxsync * available from http://www.virtualbox.org. This file is free software;
c7945191b700920f0ab9b951ce92cc69cb48ffb4vboxsync * you can redistribute it and/or modify it under the terms of the GNU
a16eb14ad7a4b5ef91ddc22d3e8e92d930f736fcvboxsync * General Public License (GPL) as published by the Free Software
a16eb14ad7a4b5ef91ddc22d3e8e92d930f736fcvboxsync * Foundation, in version 2 as it comes in the "COPYING" file of the
a16eb14ad7a4b5ef91ddc22d3e8e92d930f736fcvboxsync * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
a16eb14ad7a4b5ef91ddc22d3e8e92d930f736fcvboxsync * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
a16eb14ad7a4b5ef91ddc22d3e8e92d930f736fcvboxsync * The contents of this file may alternatively be used under the terms
a16eb14ad7a4b5ef91ddc22d3e8e92d930f736fcvboxsync * of the Common Development and Distribution License Version 1.0
a16eb14ad7a4b5ef91ddc22d3e8e92d930f736fcvboxsync * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
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1c94c0a63ba68be1a7b2c640e70d7a06464e4fcavboxsync * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
1c94c0a63ba68be1a7b2c640e70d7a06464e4fcavboxsync * Clara, CA 95054 USA or visit http://www.sun.com if you need
1c94c0a63ba68be1a7b2c640e70d7a06464e4fcavboxsync * additional information or have any questions.
c7945191b700920f0ab9b951ce92cc69cb48ffb4vboxsync/*******************************************************************************
c7945191b700920f0ab9b951ce92cc69cb48ffb4vboxsync* Header Files *
c7945191b700920f0ab9b951ce92cc69cb48ffb4vboxsync*******************************************************************************/
c7945191b700920f0ab9b951ce92cc69cb48ffb4vboxsyncRTR3DECL(int) RTFileLock(RTFILE File, unsigned fLock, int64_t offLock, uint64_t cbLock)
c7945191b700920f0ab9b951ce92cc69cb48ffb4vboxsync /* Check arguments. */
c7945191b700920f0ab9b951ce92cc69cb48ffb4vboxsync * Validate offset.
c7945191b700920f0ab9b951ce92cc69cb48ffb4vboxsync AssertMsgFailed(("64-bit file i/o not supported! offLock=%lld cbLock=%lld\n", offLock, cbLock));
c7945191b700920f0ab9b951ce92cc69cb48ffb4vboxsync /* Prepare flock structure. */
c7945191b700920f0ab9b951ce92cc69cb48ffb4vboxsync fl.l_type = (fLock & RTFILE_LOCK_WRITE) ? F_WRLCK : F_RDLCK;
c7945191b700920f0ab9b951ce92cc69cb48ffb4vboxsync if (fcntl(File, (fLock & RTFILE_LOCK_WAIT) ? F_SETLKW : F_SETLK, &fl) >= 0)
611992ec6994e6050e4970a973d2f549f823a3eavboxsync * This is really bad hack for getting VDIs to work somewhat
611992ec6994e6050e4970a973d2f549f823a3eavboxsync * safely on SMB mounts.
611992ec6994e6050e4970a973d2f549f823a3eavboxsync /** @todo we need to keep track of these locks really. Anyone requiring to lock more
611992ec6994e6050e4970a973d2f549f823a3eavboxsync * than one part of a file will have to fix this. */
611992ec6994e6050e4970a973d2f549f823a3eavboxsync unsigned f = 0;
c7945191b700920f0ab9b951ce92cc69cb48ffb4vboxsyncRTR3DECL(int) RTFileChangeLock(RTFILE File, unsigned fLock, int64_t offLock, uint64_t cbLock)
c7945191b700920f0ab9b951ce92cc69cb48ffb4vboxsync /** @todo We never returns VERR_FILE_NOT_LOCKED for now. */
c7945191b700920f0ab9b951ce92cc69cb48ffb4vboxsyncRTR3DECL(int) RTFileUnlock(RTFILE File, int64_t offLock, uint64_t cbLock)
c7945191b700920f0ab9b951ce92cc69cb48ffb4vboxsync * Validate offset.
c7945191b700920f0ab9b951ce92cc69cb48ffb4vboxsync AssertMsgFailed(("64-bit file i/o not supported! offLock=%lld cbLock=%lld\n", offLock, cbLock));
c7945191b700920f0ab9b951ce92cc69cb48ffb4vboxsync /* Prepare flock structure. */
611992ec6994e6050e4970a973d2f549f823a3eavboxsync /* A SMB hack, see RTFileLock. */
611992ec6994e6050e4970a973d2f549f823a3eavboxsync /** @todo check error codes for non existing lock. */