debuggers.hg

view tools/blktap2/drivers/lock.h @ 22848:6341fe0f4e5a

Added tag 4.1.0-rc2 for changeset 9dca60d88c63
author Keir Fraser <keir@xen.org>
date Tue Jan 25 14:06:55 2011 +0000 (2011-01-25)
parents 1c627434605e
children
line source
1 /*
2 * Copyright (c) 2007, XenSource Inc.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are met:
7 * * Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * * Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 * * Neither the name of XenSource Inc. nor the names of its contributors
13 * may be used to endorse or promote products derived from this software
14 * without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
19 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
20 * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
21 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
22 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
23 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
24 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
25 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
26 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
29 #define DEFAULT_LEASE_TIME_SECS 30
31 int lock(char *fn_to_lock, char *uuid, int force, int readonly, int *lease_time, int *retstat);
32 int unlock(char *fn_to_unlock, char *uuid, int readonly, int *retstat);
33 int lock_delta(char *fn_to_check, int *cur_lease_time, int *max_lease_time);
35 typedef enum {
36 LOCK_OK = 0,
37 LOCK_EBADPARM = -1,
38 LOCK_ENOMEM = -2,
39 LOCK_ESTAT = -3,
40 LOCK_EHELD_WR = -4,
41 LOCK_EHELD_RD = -5,
42 LOCK_EOPEN = -6,
43 LOCK_EXLOCK_OPEN = -7,
44 LOCK_EXLOCK_WRITE= -8,
45 LOCK_EINODE = -9,
46 LOCK_EUPDATE = -10,
47 LOCK_EREAD = -11,
48 LOCK_EREMOVE = -12,
49 LOCK_ENOLOCK = -13,
50 LOCK_EUSAGE = -14,
51 } lock_error;