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David Teiglande7fd4172006-01-18 09:30:29 +00001/******************************************************************************
2*******************************************************************************
3**
4** Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
David Teiglandd7db9232007-05-18 09:00:32 -05005** Copyright (C) 2004-2007 Red Hat, Inc. All rights reserved.
David Teiglande7fd4172006-01-18 09:30:29 +00006**
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
Mike Frysingerc1c76742008-04-21 11:35:39 -050014#ifndef _LINUX_DLM_DEVICE_H
15#define _LINUX_DLM_DEVICE_H
16
David Teiglande7fd4172006-01-18 09:30:29 +000017/* This is the device interface for dlm, most users will use a library
18 * interface.
19 */
20
Mike Frysingerc1c76742008-04-21 11:35:39 -050021#include <linux/dlm.h>
22#include <linux/types.h>
23
David Teiglande7fd4172006-01-18 09:30:29 +000024#define DLM_USER_LVB_LEN 32
25
26/* Version of the device interface */
David Teiglandd7db9232007-05-18 09:00:32 -050027#define DLM_DEVICE_VERSION_MAJOR 6
28#define DLM_DEVICE_VERSION_MINOR 0
David Teigland0f8e0d92008-08-06 13:30:24 -050029#define DLM_DEVICE_VERSION_PATCH 1
David Teiglande7fd4172006-01-18 09:30:29 +000030
31/* struct passed to the lock write */
32struct dlm_lock_params {
33 __u8 mode;
Patrick Caulfield22da6452006-06-09 16:14:20 -040034 __u8 namelen;
David Teiglandd7db9232007-05-18 09:00:32 -050035 __u16 unused;
36 __u32 flags;
David Teiglande7fd4172006-01-18 09:30:29 +000037 __u32 lkid;
38 __u32 parent;
David Teiglandd7db9232007-05-18 09:00:32 -050039 __u64 xid;
40 __u64 timeout;
41 void __user *castparam;
David Teiglande7fd4172006-01-18 09:30:29 +000042 void __user *castaddr;
43 void __user *bastparam;
David Teiglandd7db9232007-05-18 09:00:32 -050044 void __user *bastaddr;
David Teiglande7fd4172006-01-18 09:30:29 +000045 struct dlm_lksb __user *lksb;
46 char lvb[DLM_USER_LVB_LEN];
Patrick Caulfield22da6452006-06-09 16:14:20 -040047 char name[0];
David Teiglande7fd4172006-01-18 09:30:29 +000048};
49
50struct dlm_lspace_params {
51 __u32 flags;
52 __u32 minor;
Patrick Caulfield22da6452006-06-09 16:14:20 -040053 char name[0];
David Teiglande7fd4172006-01-18 09:30:29 +000054};
55
David Teigland72c2be72007-03-30 15:06:16 -050056struct dlm_purge_params {
57 __u32 nodeid;
58 __u32 pid;
59};
60
David Teiglande7fd4172006-01-18 09:30:29 +000061struct dlm_write_request {
62 __u32 version[3];
63 __u8 cmd;
Patrick Caulfield22da6452006-06-09 16:14:20 -040064 __u8 is64bit;
65 __u8 unused[2];
David Teiglande7fd4172006-01-18 09:30:29 +000066
67 union {
68 struct dlm_lock_params lock;
69 struct dlm_lspace_params lspace;
David Teigland72c2be72007-03-30 15:06:16 -050070 struct dlm_purge_params purge;
David Teiglande7fd4172006-01-18 09:30:29 +000071 } i;
72};
73
David Teiglandd7db9232007-05-18 09:00:32 -050074struct dlm_device_version {
75 __u32 version[3];
76};
77
David Teiglande7fd4172006-01-18 09:30:29 +000078/* struct read from the "device" fd,
79 consists mainly of userspace pointers for the library to use */
David Teiglandd7db9232007-05-18 09:00:32 -050080
David Teiglande7fd4172006-01-18 09:30:29 +000081struct dlm_lock_result {
David Teiglandd7db9232007-05-18 09:00:32 -050082 __u32 version[3];
David Teiglande7fd4172006-01-18 09:30:29 +000083 __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;
Patrick Caulfield22da6452006-06-09 16:14:20 -040089 __u8 unused[3];
David Teiglande7fd4172006-01-18 09:30:29 +000090 /* 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
David Teigland72c2be72007-03-30 15:06:16 -0500100#define DLM_USER_PURGE 6
David Teigland8b4021f2007-05-29 08:46:00 -0500101#define DLM_USER_DEADLOCK 7
David Teiglande7fd4172006-01-18 09:30:29 +0000102
David Teiglande7fd4172006-01-18 09:30:29 +0000103/* Lockspace flags */
104#define DLM_USER_LSFLG_AUTOFREE 1
105#define DLM_USER_LSFLG_FORCEFREE 2
106
Mike Frysingerc1c76742008-04-21 11:35:39 -0500107#endif
108