freebsd-skq/sys/dev/hyperv/utilities/hv_snapshot.h

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2016-11-15 02:36:12 +00:00
/*-
* Copyright (c) 2016 Microsoft Corp.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice unmodified, this list of conditions, and the following
* disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* $FreeBSD$
*/
#ifndef _VSS_H
#define _VSS_H
#include <sys/ioccom.h>
#define FS_VSS_DEV_NAME "hv_fsvss_dev"
#define APP_VSS_DEV_NAME "hv_appvss_dev"
#define VSS_DEV(VSS) "/dev/"VSS
#define VSS_SUCCESS 0x00000000
#define VSS_FAIL 0x00000001
enum hv_vss_op_t {
HV_VSS_NONE = 0,
HV_VSS_CHECK,
HV_VSS_FREEZE,
HV_VSS_THAW,
HV_VSS_COUNT
};
struct hv_vss_opt_msg {
uint32_t opt; /* operation */
uint32_t status; /* 0 for success, 1 for error */
uint64_t msgid; /* an ID used to identify the transaction */
uint8_t reserved[48]; /* reserved values are all zeroes */
};
#define IOCHVVSSREAD _IOR('v', 2, struct hv_vss_opt_msg)
#define IOCHVVSSWRITE _IOW('v', 3, struct hv_vss_opt_msg)
#endif