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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 | ||
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 */ | |
d7db923e DT |
21 | #define DLM_DEVICE_VERSION_MAJOR 6 |
22 | #define DLM_DEVICE_VERSION_MINOR 0 | |
e7fd4179 DT |
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; |
d7db923e DT |
29 | __u16 unused; |
30 | __u32 flags; | |
e7fd4179 DT |
31 | __u32 lkid; |
32 | __u32 parent; | |
d7db923e DT |
33 | __u64 xid; |
34 | __u64 timeout; | |
35 | void __user *castparam; | |
e7fd4179 DT |
36 | void __user *castaddr; |
37 | void __user *bastparam; | |
d7db923e | 38 | void __user *bastaddr; |
e7fd4179 DT |
39 | struct dlm_lksb __user *lksb; |
40 | char lvb[DLM_USER_LVB_LEN]; | |
22da645f | 41 | char name[0]; |
e7fd4179 DT |
42 | }; |
43 | ||
44 | struct dlm_lspace_params { | |
45 | __u32 flags; | |
46 | __u32 minor; | |
22da645f | 47 | char name[0]; |
e7fd4179 DT |
48 | }; |
49 | ||
72c2be77 DT |
50 | struct dlm_purge_params { |
51 | __u32 nodeid; | |
52 | __u32 pid; | |
53 | }; | |
54 | ||
e7fd4179 DT |
55 | struct dlm_write_request { |
56 | __u32 version[3]; | |
57 | __u8 cmd; | |
22da645f PC |
58 | __u8 is64bit; |
59 | __u8 unused[2]; | |
e7fd4179 DT |
60 | |
61 | union { | |
62 | struct dlm_lock_params lock; | |
63 | struct dlm_lspace_params lspace; | |
72c2be77 | 64 | struct dlm_purge_params purge; |
e7fd4179 DT |
65 | } i; |
66 | }; | |
67 | ||
d7db923e DT |
68 | struct dlm_device_version { |
69 | __u32 version[3]; | |
70 | }; | |
71 | ||
e7fd4179 DT |
72 | /* struct read from the "device" fd, |
73 | consists mainly of userspace pointers for the library to use */ | |
d7db923e | 74 | |
e7fd4179 | 75 | struct dlm_lock_result { |
d7db923e | 76 | __u32 version[3]; |
e7fd4179 DT |
77 | __u32 length; |
78 | void __user * user_astaddr; | |
79 | void __user * user_astparam; | |
80 | struct dlm_lksb __user * user_lksb; | |
81 | struct dlm_lksb lksb; | |
82 | __u8 bast_mode; | |
22da645f | 83 | __u8 unused[3]; |
e7fd4179 DT |
84 | /* Offsets may be zero if no data is present */ |
85 | __u32 lvb_offset; | |
86 | }; | |
87 | ||
88 | /* Commands passed to the device */ | |
89 | #define DLM_USER_LOCK 1 | |
90 | #define DLM_USER_UNLOCK 2 | |
91 | #define DLM_USER_QUERY 3 | |
92 | #define DLM_USER_CREATE_LOCKSPACE 4 | |
93 | #define DLM_USER_REMOVE_LOCKSPACE 5 | |
72c2be77 | 94 | #define DLM_USER_PURGE 6 |
e7fd4179 DT |
95 | |
96 | /* Arbitrary length restriction */ | |
97 | #define MAX_LS_NAME_LEN 64 | |
98 | ||
99 | /* Lockspace flags */ | |
100 | #define DLM_USER_LSFLG_AUTOFREE 1 | |
101 | #define DLM_USER_LSFLG_FORCEFREE 2 | |
102 |