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/*
* Copyright (c) 2007, XenSource Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of XenSource Inc. nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
* OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#define DEFAULT_LEASE_TIME_SECS 30
int lock(char *fn_to_lock, char *uuid, int force, int readonly, int *lease_time, int *retstat);
int unlock(char *fn_to_unlock, char *uuid, int readonly, int *retstat);
int lock_delta(char *fn_to_check, int *cur_lease_time, int *max_lease_time);
typedef enum {
LOCK_OK = 0,
LOCK_EBADPARM = -1,
LOCK_ENOMEM = -2,
LOCK_ESTAT = -3,
LOCK_EHELD_WR = -4,
LOCK_EHELD_RD = -5,
LOCK_EOPEN = -6,
LOCK_EXLOCK_OPEN = -7,
LOCK_EXLOCK_WRITE= -8,
LOCK_EINODE = -9,
LOCK_EUPDATE = -10,
LOCK_EREAD = -11,
LOCK_EREMOVE = -12,
LOCK_ENOLOCK = -13,
LOCK_EUSAGE = -14,
} lock_error;
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