[net-next-2.6.git] / include / linux / dlm_device.h

/******************************************************************************
*******************************************************************************
**
**  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 1

/* 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
e7fd4179 DT	1	/******************************************************************************
	2	*******************************************************************************
	3	**
	4	** Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
d7db923e	5	** Copyright (C) 2004-2007 Red Hat, Inc. All rights reserved.
e7fd4179 DT	6	**
	7	** This copyrighted material is made available to anyone wishing to use,
	8	** modify, copy, or redistribute it subject to the terms and conditions
	9	** of the GNU General Public License v.2.
	10	**
	11	*******************************************************************************
	12	******************************************************************************/
	13
c1c76743 MF	14	#ifndef _LINUX_DLM_DEVICE_H
	15	#define _LINUX_DLM_DEVICE_H
	16
e7fd4179 DT	17	/* This is the device interface for dlm, most users will use a library
	18	* interface.
	19	*/
	20
c1c76743 MF	21	#include <linux/dlm.h>
	22	#include <linux/types.h>
	23
e7fd4179 DT	24	#define DLM_USER_LVB_LEN 32
	25
	26	/* Version of the device interface */
d7db923e DT	27	#define DLM_DEVICE_VERSION_MAJOR 6
d7db923e DT	28	#define DLM_DEVICE_VERSION_MINOR 0
0f8e0d9a	29	#define DLM_DEVICE_VERSION_PATCH 1
e7fd4179 DT	30
	31	/* struct passed to the lock write */
	32	struct dlm_lock_params {
	33	__u8 mode;
22da645f	34	__u8 namelen;
d7db923e DT	35	__u16 unused;
d7db923e DT	36	__u32 flags;
e7fd4179 DT	37	__u32 lkid;
e7fd4179 DT	38	__u32 parent;
d7db923e DT	39	__u64 xid;
	40	__u64 timeout;
	41	void __user *castparam;
e7fd4179 DT	42	void __user *castaddr;
e7fd4179 DT	43	void __user *bastparam;
d7db923e	44	void __user *bastaddr;
e7fd4179 DT	45	struct dlm_lksb __user *lksb;
e7fd4179 DT	46	char lvb[DLM_USER_LVB_LEN];
22da645f	47	char name[0];
e7fd4179 DT	48	};
	49
	50	struct dlm_lspace_params {
	51	__u32 flags;
	52	__u32 minor;
22da645f	53	char name[0];
e7fd4179 DT	54	};
e7fd4179 DT	55
72c2be77 DT	56	struct dlm_purge_params {
	57	__u32 nodeid;
	58	__u32 pid;
	59	};
	60
e7fd4179 DT	61	struct dlm_write_request {
	62	__u32 version[3];
	63	__u8 cmd;
22da645f PC	64	__u8 is64bit;
22da645f PC	65	__u8 unused[2];
e7fd4179 DT	66
	67	union {
	68	struct dlm_lock_params lock;
	69	struct dlm_lspace_params lspace;
72c2be77	70	struct dlm_purge_params purge;
e7fd4179 DT	71	} i;
	72	};
	73
d7db923e DT	74	struct dlm_device_version {
	75	__u32 version[3];
	76	};
	77
e7fd4179 DT	78	/* struct read from the "device" fd,
e7fd4179 DT	79	consists mainly of userspace pointers for the library to use */
d7db923e	80
e7fd4179	81	struct dlm_lock_result {
d7db923e	82	__u32 version[3];
e7fd4179 DT	83	__u32 length;
	84	void __user * user_astaddr;
	85	void __user * user_astparam;
	86	struct dlm_lksb __user * user_lksb;
	87	struct dlm_lksb lksb;
	88	__u8 bast_mode;
22da645f	89	__u8 unused[3];
e7fd4179 DT	90	/* Offsets may be zero if no data is present */
	91	__u32 lvb_offset;
	92	};
	93
	94	/* Commands passed to the device */
	95	#define DLM_USER_LOCK 1
	96	#define DLM_USER_UNLOCK 2
	97	#define DLM_USER_QUERY 3
	98	#define DLM_USER_CREATE_LOCKSPACE 4
	99	#define DLM_USER_REMOVE_LOCKSPACE 5
72c2be77	100	#define DLM_USER_PURGE 6
8b4021fa	101	#define DLM_USER_DEADLOCK 7
e7fd4179	102
e7fd4179 DT	103	/* Lockspace flags */
	104	#define DLM_USER_LSFLG_AUTOFREE 1
	105	#define DLM_USER_LSFLG_FORCEFREE 2
	106
c1c76743 MF	107	#endif
c1c76743 MF	108