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e7fd4179 DT |
1 | /****************************************************************************** |
2 | ******************************************************************************* | |
3 | ** | |
4 | ** Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved. | |
5 | ** Copyright (C) 2004-2005 Red Hat, Inc. All rights reserved. | |
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 | ||
14 | /* This is the device interface for dlm, most users will use a library | |
15 | * interface. | |
16 | */ | |
17 | ||
18 | #define DLM_USER_LVB_LEN 32 | |
19 | ||
20 | /* Version of the device interface */ | |
22da645f | 21 | #define DLM_DEVICE_VERSION_MAJOR 5 |
e7fd4179 DT |
22 | #define DLM_DEVICE_VERSION_MINOR 0 |
23 | #define DLM_DEVICE_VERSION_PATCH 0 | |
24 | ||
25 | /* struct passed to the lock write */ | |
26 | struct dlm_lock_params { | |
27 | __u8 mode; | |
22da645f | 28 | __u8 namelen; |
e7fd4179 DT |
29 | __u16 flags; |
30 | __u32 lkid; | |
31 | __u32 parent; | |
e7fd4179 DT |
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]; | |
22da645f | 38 | char name[0]; |
e7fd4179 DT |
39 | }; |
40 | ||
41 | struct dlm_lspace_params { | |
42 | __u32 flags; | |
43 | __u32 minor; | |
22da645f | 44 | char name[0]; |
e7fd4179 DT |
45 | }; |
46 | ||
47 | struct dlm_write_request { | |
48 | __u32 version[3]; | |
49 | __u8 cmd; | |
22da645f PC |
50 | __u8 is64bit; |
51 | __u8 unused[2]; | |
e7fd4179 DT |
52 | |
53 | union { | |
54 | struct dlm_lock_params lock; | |
55 | struct dlm_lspace_params lspace; | |
56 | } i; | |
57 | }; | |
58 | ||
59 | /* struct read from the "device" fd, | |
60 | consists mainly of userspace pointers for the library to use */ | |
61 | struct dlm_lock_result { | |
62 | __u32 length; | |
63 | void __user * user_astaddr; | |
64 | void __user * user_astparam; | |
65 | struct dlm_lksb __user * user_lksb; | |
66 | struct dlm_lksb lksb; | |
67 | __u8 bast_mode; | |
22da645f | 68 | __u8 unused[3]; |
e7fd4179 DT |
69 | /* Offsets may be zero if no data is present */ |
70 | __u32 lvb_offset; | |
71 | }; | |
72 | ||
73 | /* Commands passed to the device */ | |
74 | #define DLM_USER_LOCK 1 | |
75 | #define DLM_USER_UNLOCK 2 | |
76 | #define DLM_USER_QUERY 3 | |
77 | #define DLM_USER_CREATE_LOCKSPACE 4 | |
78 | #define DLM_USER_REMOVE_LOCKSPACE 5 | |
79 | ||
80 | /* Arbitrary length restriction */ | |
81 | #define MAX_LS_NAME_LEN 64 | |
82 | ||
83 | /* Lockspace flags */ | |
84 | #define DLM_USER_LSFLG_AUTOFREE 1 | |
85 | #define DLM_USER_LSFLG_FORCEFREE 2 | |
86 |