1 /******************************************************************************
2 *******************************************************************************
4 ** Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
5 ** Copyright (C) 2004-2005 Red Hat, Inc. All rights reserved.
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.
11 *******************************************************************************
12 ******************************************************************************/
14 /* This is the device interface for dlm, most users will use a library
18 #define DLM_USER_LVB_LEN 32
20 /* Version of the device interface */
21 #define DLM_DEVICE_VERSION_MAJOR 4
22 #define DLM_DEVICE_VERSION_MINOR 0
23 #define DLM_DEVICE_VERSION_PATCH 0
25 /* struct passed to the lock write */
26 struct dlm_lock_params {
32 void __user *castparam;
33 void __user *castaddr;
34 void __user *bastparam;
35 void __user *bastaddr;
36 struct dlm_lksb __user *lksb;
37 char lvb[DLM_USER_LVB_LEN];
41 struct dlm_lspace_params {
47 struct dlm_write_request {
52 struct dlm_lock_params lock;
53 struct dlm_lspace_params lspace;
57 /* struct read from the "device" fd,
58 consists mainly of userspace pointers for the library to use */
59 struct dlm_lock_result {
61 void __user * user_astaddr;
62 void __user * user_astparam;
63 struct dlm_lksb __user * user_lksb;
66 /* Offsets may be zero if no data is present */
70 /* Commands passed to the device */
71 #define DLM_USER_LOCK 1
72 #define DLM_USER_UNLOCK 2
73 #define DLM_USER_QUERY 3
74 #define DLM_USER_CREATE_LOCKSPACE 4
75 #define DLM_USER_REMOVE_LOCKSPACE 5
77 /* Arbitrary length restriction */
78 #define MAX_LS_NAME_LEN 64
81 #define DLM_USER_LSFLG_AUTOFREE 1
82 #define DLM_USER_LSFLG_FORCEFREE 2