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 5
22 #define DLM_DEVICE_VERSION_MINOR 1
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_purge_params {
52 struct dlm_write_request {
59 struct dlm_lock_params lock;
60 struct dlm_lspace_params lspace;
61 struct dlm_purge_params purge;
65 /* struct read from the "device" fd,
66 consists mainly of userspace pointers for the library to use */
67 struct dlm_lock_result {
69 void __user * user_astaddr;
70 void __user * user_astparam;
71 struct dlm_lksb __user * user_lksb;
75 /* Offsets may be zero if no data is present */
79 /* Commands passed to the device */
80 #define DLM_USER_LOCK 1
81 #define DLM_USER_UNLOCK 2
82 #define DLM_USER_QUERY 3
83 #define DLM_USER_CREATE_LOCKSPACE 4
84 #define DLM_USER_REMOVE_LOCKSPACE 5
85 #define DLM_USER_PURGE 6
87 /* Arbitrary length restriction */
88 #define MAX_LS_NAME_LEN 64
91 #define DLM_USER_LSFLG_AUTOFREE 1
92 #define DLM_USER_LSFLG_FORCEFREE 2