/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note *//*****************************************************************************************************************************************************************  Copyright (C) Sistina Software, Inc.  1997-2003  All rights reserved.**  Copyright (C) 2004-2007 Red Hat, Inc.  All rights reserved.****  This copyrighted material is made available to anyone wishing to use,**  modify, copy, or redistribute it subject to the terms and conditions**  of the GNU General Public License v.2.***************************************************************************************************************************************************************/ #ifndef _LINUX_DLM_DEVICE_H#define _LINUX_DLM_DEVICE_H /* This is the device interface for dlm, most users will use a library * interface. */ #include <linux/dlm.h>#include <linux/types.h> #define DLM_USER_LVB_LEN	32 /* Version of the device interface */#define DLM_DEVICE_VERSION_MAJOR 6#define DLM_DEVICE_VERSION_MINOR 0#define DLM_DEVICE_VERSION_PATCH 2 /* struct passed to the lock write */struct dlm_lock_params {	__u8 mode;	__u8 namelen;	__u16 unused;	__u32 flags;	__u32 lkid;	__u32 parent;	__u64 xid;	__u64 timeout;	void __user *castparam;	void __user *castaddr;	void __user *bastparam;	void __user *bastaddr;	struct dlm_lksb __user *lksb;	char lvb[DLM_USER_LVB_LEN];	char name[];}; struct dlm_lspace_params {	__u32 flags;	__u32 minor;	char name[];}; struct dlm_purge_params {	__u32 nodeid;	__u32 pid;}; struct dlm_write_request {	__u32 version[3];	__u8 cmd;	__u8 is64bit;	__u8 unused[2]; 	union  {		struct dlm_lock_params   lock;		struct dlm_lspace_params lspace;		struct dlm_purge_params  purge;	} i;}; struct dlm_device_version {	__u32 version[3];}; /* struct read from the "device" fd,   consists mainly of userspace pointers for the library to use */ struct dlm_lock_result {	__u32 version[3];	__u32 length;	void __user * user_astaddr;	void __user * user_astparam;	struct dlm_lksb __user * user_lksb;	struct dlm_lksb lksb;	__u8 bast_mode;	__u8 unused[3];	/* Offsets may be zero if no data is present */	__u32 lvb_offset;}; /* Commands passed to the device */#define DLM_USER_LOCK         1#define DLM_USER_UNLOCK       2#define DLM_USER_QUERY        3#define DLM_USER_CREATE_LOCKSPACE  4#define DLM_USER_REMOVE_LOCKSPACE  5#define DLM_USER_PURGE        6#define DLM_USER_DEADLOCK     7 /* Lockspace flags */#define DLM_USER_LSFLG_AUTOFREE   1#define DLM_USER_LSFLG_FORCEFREE  2 #endif