debuggers.hg

view tools/blktap2/include/blktap2.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 63d0f5348af2
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 _BLKTAP_2_H_
29 #define _BLKTAP_2_H_
31 #define BLKTAP2_MAX_MESSAGE_LEN 256
33 #define BLKTAP2_RING_MESSAGE_PAUSE 1
34 #define BLKTAP2_RING_MESSAGE_RESUME 2
35 #define BLKTAP2_RING_MESSAGE_CLOSE 3
37 #define BLKTAP2_IOCTL_KICK_FE 1
38 #define BLKTAP2_IOCTL_ALLOC_TAP 200
39 #define BLKTAP2_IOCTL_FREE_TAP 201
40 #define BLKTAP2_IOCTL_CREATE_DEVICE 202
41 #define BLKTAP2_IOCTL_SET_PARAMS 203
42 #define BLKTAP2_IOCTL_PAUSE 204
43 #define BLKTAP2_IOCTL_REOPEN 205
44 #define BLKTAP2_IOCTL_RESUME 206
46 #define BLKTAP2_SYSFS_DIR "/sys/class/blktap2"
47 #define BLKTAP2_CONTROL_NAME "blktap-control"
48 #define BLKTAP2_CONTROL_DIR "/var/run/"BLKTAP2_CONTROL_NAME
49 #define BLKTAP2_CONTROL_SOCKET "ctl"
50 #define BLKTAP2_DIRECTORY "/dev/xen/blktap-2"
51 #define BLKTAP2_CONTROL_DEVICE BLKTAP2_DIRECTORY"/control"
52 #define BLKTAP2_RING_DEVICE BLKTAP2_DIRECTORY"/blktap"
53 #define BLKTAP2_IO_DEVICE BLKTAP2_DIRECTORY"/tapdev"
55 struct blktap2_handle {
56 unsigned int ring;
57 unsigned int device;
58 unsigned int minor;
59 };
61 struct blktap2_params {
62 char name[BLKTAP2_MAX_MESSAGE_LEN];
63 unsigned long long capacity;
64 unsigned long sector_size;
65 };
67 #endif