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e7fd4179 DT |
1 | /****************************************************************************** |
2 | ******************************************************************************* | |
3 | ** | |
4 | ** Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved. | |
d7db923e | 5 | ** Copyright (C) 2004-2007 Red Hat, Inc. All rights reserved. |
e7fd4179 DT |
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 | ||
c1c76743 MF |
14 | #ifndef _LINUX_DLM_DEVICE_H |
15 | #define _LINUX_DLM_DEVICE_H | |
16 | ||
e7fd4179 DT |
17 | /* This is the device interface for dlm, most users will use a library |
18 | * interface. | |
19 | */ | |
20 | ||
c1c76743 MF |
21 | #include <linux/dlm.h> |
22 | #include <linux/types.h> | |
23 | ||
e7fd4179 DT |
24 | #define DLM_USER_LVB_LEN 32 |
25 | ||
26 | /* Version of the device interface */ | |
d7db923e DT |
27 | #define DLM_DEVICE_VERSION_MAJOR 6 |
28 | #define DLM_DEVICE_VERSION_MINOR 0 | |
b96f4650 | 29 | #define DLM_DEVICE_VERSION_PATCH 2 |
e7fd4179 DT |
30 | |
31 | /* struct passed to the lock write */ | |
32 | struct dlm_lock_params { | |
33 | __u8 mode; | |
22da645f | 34 | __u8 namelen; |
d7db923e DT |
35 | __u16 unused; |
36 | __u32 flags; | |
e7fd4179 DT |
37 | __u32 lkid; |
38 | __u32 parent; | |
d7db923e DT |
39 | __u64 xid; |
40 | __u64 timeout; | |
41 | void __user *castparam; | |
e7fd4179 DT |
42 | void __user *castaddr; |
43 | void __user *bastparam; | |
d7db923e | 44 | void __user *bastaddr; |
e7fd4179 DT |
45 | struct dlm_lksb __user *lksb; |
46 | char lvb[DLM_USER_LVB_LEN]; | |
22da645f | 47 | char name[0]; |
e7fd4179 DT |
48 | }; |
49 | ||
50 | struct dlm_lspace_params { | |
51 | __u32 flags; | |
52 | __u32 minor; | |
22da645f | 53 | char name[0]; |
e7fd4179 DT |
54 | }; |
55 | ||
72c2be77 DT |
56 | struct dlm_purge_params { |
57 | __u32 nodeid; | |
58 | __u32 pid; | |
59 | }; | |
60 | ||
e7fd4179 DT |
61 | struct dlm_write_request { |
62 | __u32 version[3]; | |
63 | __u8 cmd; | |
22da645f PC |
64 | __u8 is64bit; |
65 | __u8 unused[2]; | |
e7fd4179 DT |
66 | |
67 | union { | |
68 | struct dlm_lock_params lock; | |
69 | struct dlm_lspace_params lspace; | |
72c2be77 | 70 | struct dlm_purge_params purge; |
e7fd4179 DT |
71 | } i; |
72 | }; | |
73 | ||
d7db923e DT |
74 | struct dlm_device_version { |
75 | __u32 version[3]; | |
76 | }; | |
77 | ||
e7fd4179 DT |
78 | /* struct read from the "device" fd, |
79 | consists mainly of userspace pointers for the library to use */ | |
d7db923e | 80 | |
e7fd4179 | 81 | struct dlm_lock_result { |
d7db923e | 82 | __u32 version[3]; |
e7fd4179 DT |
83 | __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; | |
22da645f | 89 | __u8 unused[3]; |
e7fd4179 DT |
90 | /* 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 | |
72c2be77 | 100 | #define DLM_USER_PURGE 6 |
8b4021fa | 101 | #define DLM_USER_DEADLOCK 7 |
e7fd4179 | 102 | |
e7fd4179 DT |
103 | /* Lockspace flags */ |
104 | #define DLM_USER_LSFLG_AUTOFREE 1 | |
105 | #define DLM_USER_LSFLG_FORCEFREE 2 | |
106 | ||
c1c76743 MF |
107 | #endif |
108 |