1/*-
 2 * Copyright (c) 2016 Microsoft Corp.
 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
 7 * are met:
 8 * 1. Redistributions of source code must retain the above copyright
 9 *    notice unmodified, this list of conditions, and the following
10 *    disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 *    notice, this list of conditions and the following disclaimer in the
13 *    documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 */
26
27#ifndef _VSS_H
28#define _VSS_H
29#include <sys/ioccom.h>
30#define FS_VSS_DEV_NAME		"hv_fsvss_dev"
31#define APP_VSS_DEV_NAME	"hv_appvss_dev"
32
33#define VSS_DEV(VSS)		"/dev/"VSS
34
35#define VSS_SUCCESS		0x00000000
36#define VSS_FAIL		0x00000001
37
38enum hv_vss_op_t {
39	HV_VSS_NONE = 0,
40	HV_VSS_CHECK,
41	HV_VSS_FREEZE,
42	HV_VSS_THAW,
43	HV_VSS_COUNT
44};
45
46struct hv_vss_opt_msg {
47	uint32_t	opt;		/* operation */
48	uint32_t	status;		/* 0 for success, 1 for error */
49	uint64_t	msgid;		/* an ID used to identify the transaction */
50	uint8_t		reserved[48];	/* reserved values are all zeroes */
51};
52#define IOCHVVSSREAD		_IOR('v', 2, struct hv_vss_opt_msg)
53#define IOCHVVSSWRITE		_IOW('v', 3, struct hv_vss_opt_msg)
54#endif