debuggers.hg

view tools/blktap2/drivers/tapdisk-filter.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) 2008, 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 */
28 #ifndef TAPDISK_FILTER_H
29 #define TAPDISK_FILTER_H
31 #include <libaio.h>
32 #include <inttypes.h>
33 #include <time.h>
35 #define TD_INJECT_FAULTS 0x00001 /* simulate random IO failures */
36 #define TD_CHECK_INTEGRITY 0x00002 /* check data integrity */
38 #define TD_FAULT_RATE 5
40 struct dhash {
41 uint64_t hash;
42 struct timeval time;
43 };
45 struct fiocb {
46 size_t bytes;
47 void *data;
48 };
50 struct tfilter {
51 int mode;
52 uint64_t secs;
53 int iocbs;
55 struct dhash *dhash;
57 int ffree;
58 struct fiocb *fiocbs;
59 struct fiocb **flist;
60 };
62 struct tfilter *tapdisk_init_tfilter(int mode, int iocbs, uint64_t secs);
63 void tapdisk_free_tfilter(struct tfilter *);
64 void tapdisk_filter_iocbs(struct tfilter *, struct iocb **, int);
65 void tapdisk_filter_events(struct tfilter *, struct io_event *, int);
67 #endif