[thirdparty/linux.git] / include / uapi / linux / dlm_device.h

/* 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[0];
};

struct dlm_lspace_params {
	__u32 flags;
	__u32 minor;
	char name[0];
};

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
Commit	Line	Data
e2be04c7	1	/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
e7fd4179 DT	2	/******************************************************************************
	3	*******************************************************************************
	4	**
	5	** Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
d7db923e	6	** Copyright (C) 2004-2007 Red Hat, Inc. All rights reserved.
e7fd4179 DT	7	**
	8	** This copyrighted material is made available to anyone wishing to use,
	9	** modify, copy, or redistribute it subject to the terms and conditions
	10	** of the GNU General Public License v.2.
	11	**
	12	*******************************************************************************
	13	******************************************************************************/
	14
c1c76743 MF	15	#ifndef _LINUX_DLM_DEVICE_H
	16	#define _LINUX_DLM_DEVICE_H
	17
e7fd4179 DT	18	/* This is the device interface for dlm, most users will use a library
	19	* interface.
	20	*/
	21
c1c76743 MF	22	#include <linux/dlm.h>
	23	#include <linux/types.h>
	24
e7fd4179 DT	25	#define DLM_USER_LVB_LEN 32
	26
	27	/* Version of the device interface */
d7db923e DT	28	#define DLM_DEVICE_VERSION_MAJOR 6
d7db923e DT	29	#define DLM_DEVICE_VERSION_MINOR 0
b96f4650	30	#define DLM_DEVICE_VERSION_PATCH 2
e7fd4179 DT	31
	32	/* struct passed to the lock write */
	33	struct dlm_lock_params {
	34	__u8 mode;
22da645f	35	__u8 namelen;
d7db923e DT	36	__u16 unused;
d7db923e DT	37	__u32 flags;
e7fd4179 DT	38	__u32 lkid;
e7fd4179 DT	39	__u32 parent;
d7db923e DT	40	__u64 xid;
	41	__u64 timeout;
	42	void __user *castparam;
e7fd4179 DT	43	void __user *castaddr;
e7fd4179 DT	44	void __user *bastparam;
d7db923e	45	void __user *bastaddr;
e7fd4179 DT	46	struct dlm_lksb __user *lksb;
e7fd4179 DT	47	char lvb[DLM_USER_LVB_LEN];
1e6e9d0f	48	char name[0];
e7fd4179 DT	49	};
	50
	51	struct dlm_lspace_params {
	52	__u32 flags;
	53	__u32 minor;
1e6e9d0f	54	char name[0];
e7fd4179 DT	55	};
e7fd4179 DT	56
72c2be77 DT	57	struct dlm_purge_params {
	58	__u32 nodeid;
	59	__u32 pid;
	60	};
	61
e7fd4179 DT	62	struct dlm_write_request {
	63	__u32 version[3];
	64	__u8 cmd;
22da645f PC	65	__u8 is64bit;
22da645f PC	66	__u8 unused[2];
e7fd4179 DT	67
	68	union {
	69	struct dlm_lock_params lock;
	70	struct dlm_lspace_params lspace;
72c2be77	71	struct dlm_purge_params purge;
e7fd4179 DT	72	} i;
	73	};
	74
d7db923e DT	75	struct dlm_device_version {
	76	__u32 version[3];
	77	};
	78
e7fd4179 DT	79	/* struct read from the "device" fd,
e7fd4179 DT	80	consists mainly of userspace pointers for the library to use */
d7db923e	81
e7fd4179	82	struct dlm_lock_result {
d7db923e	83	__u32 version[3];
e7fd4179 DT	84	__u32 length;
	85	void __user * user_astaddr;
	86	void __user * user_astparam;
	87	struct dlm_lksb __user * user_lksb;
	88	struct dlm_lksb lksb;
	89	__u8 bast_mode;
22da645f	90	__u8 unused[3];
e7fd4179 DT	91	/* Offsets may be zero if no data is present */
	92	__u32 lvb_offset;
	93	};
	94
	95	/* Commands passed to the device */
	96	#define DLM_USER_LOCK 1
	97	#define DLM_USER_UNLOCK 2
	98	#define DLM_USER_QUERY 3
	99	#define DLM_USER_CREATE_LOCKSPACE 4
	100	#define DLM_USER_REMOVE_LOCKSPACE 5
72c2be77	101	#define DLM_USER_PURGE 6
8b4021fa	102	#define DLM_USER_DEADLOCK 7
e7fd4179	103
e7fd4179 DT	104	/* Lockspace flags */
	105	#define DLM_USER_LSFLG_AUTOFREE 1
	106	#define DLM_USER_LSFLG_FORCEFREE 2
	107
c1c76743 MF	108	#endif
c1c76743 MF	109