7 * with the License.
8 *
9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10 * or http://www.opensolaris.org/os/licensing.
11 * See the License for the specific language governing permissions
12 * and limitations under the License.
13 *
14 * When distributing Covered Code, include this CDDL HEADER in each
15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16 * If applicable, add the following below this CDDL HEADER, with the
17 * fields enclosed by brackets "[]" replaced with your own identifying
18 * information: Portions Copyright [yyyy] [name of copyright owner]
19 *
20 * CDDL HEADER END
21 */
22 /*
23 * Copyright 2005 Sun Microsystems, Inc. All rights reserved.
24 * Use is subject to license terms.
25 */
26
27 #ifndef _NFS_LM_H
28 #define _NFS_LM_H
29
30 #pragma ident "%Z%%M% %I% %E% SMI"
31
32 /*
33 * Interface definitions for the NFSv2/v3 lock manager.
34 */
35
36 #ifdef __cplusplus
37 extern "C" {
38 #endif
39
40 #include <sys/cred.h>
41 #include <sys/fcntl.h>
42 #include <sys/types.h>
43 #include <sys/vnode.h>
44 #include <rpc/rpc.h>
45 #include <nfs/export.h>
46
47 #ifdef _KERNEL
48
49 /*
50 * Common interfaces.
51 */
52
53 /*
54 * The numeric sysid is used to identify a host and transport.
55 *
56 * The local locking code uses (pid, sysid) to uniquely identify a process.
57 * This means that the client-side code must doctor up the sysid before
58 * registering a lock, so that the local locking code doesn't confuse a
59 * remote process with a local process just because they have the same pid.
60 * We currently do this by ORing LM_SYSID_CLIENT into the sysid before
61 * registering a lock.
62 *
63 * If you change LM_SYSID and LM_SYSID_MAX, be sure to pick values so that
64 * LM_SYSID_MAX > LM_SYSID using signed arithmetic, and don't use zero.
65 * You may also need a different way to tag lock manager locks that are
66 * registered locally.
67 */
68 #define LM_SYSID ((sysid_t)0x0001)
69 #define LM_SYSID_MAX ((sysid_t)0x3FFF)
70 #define LM_SYSID_CLIENT ((sysid_t)0x4000)
71 #define LM_NOSYSID ((sysid_t)-1)
72
137 extern void (*lm_remove_file_locks)(int);
138
139 /*
140 * The following global variable is the node id of the node where this
141 * NLM server is running.
142 */
143 extern int lm_global_nlmid;
144
145 /*
146 * End of clustering hooks.
147 */
148
149 /*
150 * Return non-zero if the given local vnode is in use.
151 */
152 extern int lm_vp_active(const struct vnode *);
153
154 extern sysid_t lm_alloc_sysidt(void);
155 extern void lm_free_sysidt(sysid_t);
156
157 #else /* _KERNEL */
158
159 #ifdef __STDC__
160 extern int lm_shutdown(void);
161 #else
162 extern int lm_shutdown();
163 #endif /* __STDC__ */
164
165 #endif /* _KERNEL */
166
167 #ifdef __cplusplus
168 }
169 #endif
170
171 #endif /* _NFS_LM_H */
|
7 * with the License.
8 *
9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10 * or http://www.opensolaris.org/os/licensing.
11 * See the License for the specific language governing permissions
12 * and limitations under the License.
13 *
14 * When distributing Covered Code, include this CDDL HEADER in each
15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16 * If applicable, add the following below this CDDL HEADER, with the
17 * fields enclosed by brackets "[]" replaced with your own identifying
18 * information: Portions Copyright [yyyy] [name of copyright owner]
19 *
20 * CDDL HEADER END
21 */
22 /*
23 * Copyright 2005 Sun Microsystems, Inc. All rights reserved.
24 * Use is subject to license terms.
25 */
26
27 /*
28 * Copyright 2011 Nexenta Systems, Inc. All rights reserved.
29 */
30
31 #ifndef _NFS_LM_H
32 #define _NFS_LM_H
33
34 /*
35 * Interface definitions for the NFSv2/v3 lock manager.
36 */
37
38 #ifdef __cplusplus
39 extern "C" {
40 #endif
41
42 #include <sys/cred.h>
43 #include <sys/fcntl.h>
44 #include <sys/types.h>
45 #include <sys/vnode.h>
46 #include <rpc/rpc.h>
47
48 #ifdef _KERNEL
49
50 /*
51 * Common interfaces.
52 */
53
54 struct exportinfo;
55
56 /*
57 * The numeric sysid is used to identify a host and transport.
58 *
59 * The local locking code uses (pid, sysid) to uniquely identify a process.
60 * This means that the client-side code must doctor up the sysid before
61 * registering a lock, so that the local locking code doesn't confuse a
62 * remote process with a local process just because they have the same pid.
63 * We currently do this by ORing LM_SYSID_CLIENT into the sysid before
64 * registering a lock.
65 *
66 * If you change LM_SYSID and LM_SYSID_MAX, be sure to pick values so that
67 * LM_SYSID_MAX > LM_SYSID using signed arithmetic, and don't use zero.
68 * You may also need a different way to tag lock manager locks that are
69 * registered locally.
70 */
71 #define LM_SYSID ((sysid_t)0x0001)
72 #define LM_SYSID_MAX ((sysid_t)0x3FFF)
73 #define LM_SYSID_CLIENT ((sysid_t)0x4000)
74 #define LM_NOSYSID ((sysid_t)-1)
75
140 extern void (*lm_remove_file_locks)(int);
141
142 /*
143 * The following global variable is the node id of the node where this
144 * NLM server is running.
145 */
146 extern int lm_global_nlmid;
147
148 /*
149 * End of clustering hooks.
150 */
151
152 /*
153 * Return non-zero if the given local vnode is in use.
154 */
155 extern int lm_vp_active(const struct vnode *);
156
157 extern sysid_t lm_alloc_sysidt(void);
158 extern void lm_free_sysidt(sysid_t);
159
160 #endif /* _KERNEL */
161
162 #ifdef __STDC__
163 extern int lm_shutdown(void);
164 #else
165 extern int lm_shutdown();
166 #endif /* __STDC__ */
167
168 #ifdef __cplusplus
169 }
170 #endif
171
172 #endif /* _NFS_LM_H */
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