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