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 3
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 {
31 struct dlm_range range;
33 void __user *castparam;
34 void __user *castaddr;
35 void __user *bastparam;
36 void __user *bastaddr;
37 struct dlm_lksb __user *lksb;
38 char lvb[DLM_USER_LVB_LEN];
42 struct dlm_lspace_params {
48 struct dlm_write_request {
53 struct dlm_lock_params lock;
54 struct dlm_lspace_params lspace;
58 /* struct read from the "device" fd,
59 consists mainly of userspace pointers for the library to use */
60 struct dlm_lock_result {
62 void __user * user_astaddr;
63 void __user * user_astparam;
64 struct dlm_lksb __user * user_lksb;
67 /* Offsets may be zero if no data is present */
71 /* Commands passed to the device */
72 #define DLM_USER_LOCK 1
73 #define DLM_USER_UNLOCK 2
74 #define DLM_USER_QUERY 3
75 #define DLM_USER_CREATE_LOCKSPACE 4
76 #define DLM_USER_REMOVE_LOCKSPACE 5
78 /* Arbitrary length restriction */
79 #define MAX_LS_NAME_LEN 64
82 #define DLM_USER_LSFLG_AUTOFREE 1
83 #define DLM_USER_LSFLG_FORCEFREE 2