blob: f6f18fa5cf8baf0720fccb6c1c589cc69dfd7d1b [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * linux/fs/lockd/svc4proc.c
3 *
4 * Lockd server procedures. We don't implement the NLM_*_RES
5 * procedures because we don't use the async procedures.
6 *
7 * Copyright (C) 1996, Olaf Kirch <okir@monad.swb.de>
8 */
9
10#include <linux/types.h>
11#include <linux/time.h>
12#include <linux/slab.h>
13#include <linux/in.h>
14#include <linux/sunrpc/svc.h>
15#include <linux/sunrpc/clnt.h>
16#include <linux/nfsd/nfsd.h>
17#include <linux/lockd/lockd.h>
18#include <linux/lockd/share.h>
19#include <linux/lockd/sm_inter.h>
20
21
22#define NLMDBG_FACILITY NLMDBG_CLIENT
23
Linus Torvalds1da177e2005-04-16 15:20:36 -070024/*
25 * Obtain client and file from arguments
26 */
Al Viro52921e02006-10-19 23:28:46 -070027static __be32
Linus Torvalds1da177e2005-04-16 15:20:36 -070028nlm4svc_retrieve_args(struct svc_rqst *rqstp, struct nlm_args *argp,
29 struct nlm_host **hostp, struct nlm_file **filp)
30{
31 struct nlm_host *host = NULL;
32 struct nlm_file *file = NULL;
33 struct nlm_lock *lock = &argp->lock;
Al Viro52921e02006-10-19 23:28:46 -070034 __be32 error = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -070035
36 /* nfsd callbacks must have been installed for this procedure */
37 if (!nlmsvc_ops)
38 return nlm_lck_denied_nolocks;
39
40 /* Obtain host handle */
Olaf Kirchdb4e4c92006-10-04 02:15:52 -070041 if (!(host = nlmsvc_lookup_host(rqstp, lock->caller, lock->len))
Olaf Kirch977faf32006-10-04 02:15:51 -070042 || (argp->monitor && nsm_monitor(host) < 0))
Linus Torvalds1da177e2005-04-16 15:20:36 -070043 goto no_locks;
44 *hostp = host;
45
46 /* Obtain file pointer. Not used by FREE_ALL call. */
47 if (filp != NULL) {
48 if ((error = nlm_lookup_file(rqstp, &file, &lock->fh)) != 0)
49 goto no_locks;
50 *filp = file;
51
52 /* Set up the missing parts of the file_lock structure */
53 lock->fl.fl_file = file->f_file;
54 lock->fl.fl_owner = (fl_owner_t) host;
55 lock->fl.fl_lmops = &nlmsvc_lock_operations;
56 }
57
58 return 0;
59
60no_locks:
Jeff Laytonb0e92aa2008-07-15 12:35:20 -040061 nlm_release_host(host);
Linus Torvalds1da177e2005-04-16 15:20:36 -070062 if (error)
63 return error;
64 return nlm_lck_denied_nolocks;
65}
66
67/*
68 * NULL: Test for presence of service
69 */
Al Viro7111c662006-10-19 23:28:45 -070070static __be32
Linus Torvalds1da177e2005-04-16 15:20:36 -070071nlm4svc_proc_null(struct svc_rqst *rqstp, void *argp, void *resp)
72{
73 dprintk("lockd: NULL called\n");
74 return rpc_success;
75}
76
77/*
78 * TEST: Check for conflicting lock
79 */
Al Viro7111c662006-10-19 23:28:45 -070080static __be32
Linus Torvalds1da177e2005-04-16 15:20:36 -070081nlm4svc_proc_test(struct svc_rqst *rqstp, struct nlm_args *argp,
82 struct nlm_res *resp)
83{
84 struct nlm_host *host;
85 struct nlm_file *file;
Harvey Harrison317602f2008-07-20 23:41:24 -070086 __be32 rc = rpc_success;
Linus Torvalds1da177e2005-04-16 15:20:36 -070087
88 dprintk("lockd: TEST4 called\n");
89 resp->cookie = argp->cookie;
90
Linus Torvalds1da177e2005-04-16 15:20:36 -070091 /* Obtain client and file */
92 if ((resp->status = nlm4svc_retrieve_args(rqstp, argp, &host, &file)))
NeilBrownd343fce2006-10-17 00:10:18 -070093 return resp->status == nlm_drop_reply ? rpc_drop_reply :rpc_success;
Linus Torvalds1da177e2005-04-16 15:20:36 -070094
95 /* Now check for conflicting locks */
Jeff Layton8f920d52008-07-15 14:06:48 -040096 resp->status = nlmsvc_testlock(rqstp, file, host, &argp->lock, &resp->lock, &resp->cookie);
Marc Eshel5ea0d752006-11-28 16:27:06 -050097 if (resp->status == nlm_drop_reply)
Oleg Drokinb7e6b862007-11-26 13:35:11 -050098 rc = rpc_drop_reply;
99 else
100 dprintk("lockd: TEST4 status %d\n", ntohl(resp->status));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700101
Linus Torvalds1da177e2005-04-16 15:20:36 -0700102 nlm_release_host(host);
103 nlm_release_file(file);
Oleg Drokinb7e6b862007-11-26 13:35:11 -0500104 return rc;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700105}
106
Al Viro7111c662006-10-19 23:28:45 -0700107static __be32
Linus Torvalds1da177e2005-04-16 15:20:36 -0700108nlm4svc_proc_lock(struct svc_rqst *rqstp, struct nlm_args *argp,
109 struct nlm_res *resp)
110{
111 struct nlm_host *host;
112 struct nlm_file *file;
Harvey Harrison317602f2008-07-20 23:41:24 -0700113 __be32 rc = rpc_success;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700114
115 dprintk("lockd: LOCK called\n");
116
117 resp->cookie = argp->cookie;
118
Linus Torvalds1da177e2005-04-16 15:20:36 -0700119 /* Obtain client and file */
120 if ((resp->status = nlm4svc_retrieve_args(rqstp, argp, &host, &file)))
NeilBrownd343fce2006-10-17 00:10:18 -0700121 return resp->status == nlm_drop_reply ? rpc_drop_reply :rpc_success;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700122
123#if 0
124 /* If supplied state doesn't match current state, we assume it's
125 * an old request that time-warped somehow. Any error return would
126 * do in this case because it's irrelevant anyway.
127 *
128 * NB: We don't retrieve the remote host's state yet.
129 */
130 if (host->h_nsmstate && host->h_nsmstate != argp->state) {
131 resp->status = nlm_lck_denied_nolocks;
132 } else
133#endif
134
135 /* Now try to lock the file */
Jeff Layton6cde4de2008-07-15 14:26:17 -0400136 resp->status = nlmsvc_lock(rqstp, file, host, &argp->lock,
J. Bruce Fieldsb2b50282008-02-06 13:59:23 -0500137 argp->block, &argp->cookie,
138 argp->reclaim);
Marc Eshel1a8322b2006-11-28 16:27:06 -0500139 if (resp->status == nlm_drop_reply)
Oleg Drokinb7e6b862007-11-26 13:35:11 -0500140 rc = rpc_drop_reply;
141 else
142 dprintk("lockd: LOCK status %d\n", ntohl(resp->status));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700143
Linus Torvalds1da177e2005-04-16 15:20:36 -0700144 nlm_release_host(host);
145 nlm_release_file(file);
Oleg Drokinb7e6b862007-11-26 13:35:11 -0500146 return rc;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700147}
148
Al Viro7111c662006-10-19 23:28:45 -0700149static __be32
Linus Torvalds1da177e2005-04-16 15:20:36 -0700150nlm4svc_proc_cancel(struct svc_rqst *rqstp, struct nlm_args *argp,
151 struct nlm_res *resp)
152{
153 struct nlm_host *host;
154 struct nlm_file *file;
155
156 dprintk("lockd: CANCEL called\n");
157
158 resp->cookie = argp->cookie;
159
160 /* Don't accept requests during grace period */
J. Bruce Fieldsaf558e32007-09-06 12:34:25 -0400161 if (locks_in_grace()) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700162 resp->status = nlm_lck_denied_grace_period;
163 return rpc_success;
164 }
165
166 /* Obtain client and file */
167 if ((resp->status = nlm4svc_retrieve_args(rqstp, argp, &host, &file)))
NeilBrownd343fce2006-10-17 00:10:18 -0700168 return resp->status == nlm_drop_reply ? rpc_drop_reply :rpc_success;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700169
170 /* Try to cancel request. */
171 resp->status = nlmsvc_cancel_blocked(file, &argp->lock);
172
173 dprintk("lockd: CANCEL status %d\n", ntohl(resp->status));
174 nlm_release_host(host);
175 nlm_release_file(file);
176 return rpc_success;
177}
178
179/*
180 * UNLOCK: release a lock
181 */
Al Viro7111c662006-10-19 23:28:45 -0700182static __be32
Linus Torvalds1da177e2005-04-16 15:20:36 -0700183nlm4svc_proc_unlock(struct svc_rqst *rqstp, struct nlm_args *argp,
184 struct nlm_res *resp)
185{
186 struct nlm_host *host;
187 struct nlm_file *file;
188
189 dprintk("lockd: UNLOCK called\n");
190
191 resp->cookie = argp->cookie;
192
193 /* Don't accept new lock requests during grace period */
J. Bruce Fieldsaf558e32007-09-06 12:34:25 -0400194 if (locks_in_grace()) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700195 resp->status = nlm_lck_denied_grace_period;
196 return rpc_success;
197 }
198
199 /* Obtain client and file */
200 if ((resp->status = nlm4svc_retrieve_args(rqstp, argp, &host, &file)))
NeilBrownd343fce2006-10-17 00:10:18 -0700201 return resp->status == nlm_drop_reply ? rpc_drop_reply :rpc_success;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700202
203 /* Now try to remove the lock */
204 resp->status = nlmsvc_unlock(file, &argp->lock);
205
206 dprintk("lockd: UNLOCK status %d\n", ntohl(resp->status));
207 nlm_release_host(host);
208 nlm_release_file(file);
209 return rpc_success;
210}
211
212/*
213 * GRANTED: A server calls us to tell that a process' lock request
214 * was granted
215 */
Al Viro7111c662006-10-19 23:28:45 -0700216static __be32
Linus Torvalds1da177e2005-04-16 15:20:36 -0700217nlm4svc_proc_granted(struct svc_rqst *rqstp, struct nlm_args *argp,
218 struct nlm_res *resp)
219{
220 resp->cookie = argp->cookie;
221
222 dprintk("lockd: GRANTED called\n");
Chuck Lever27459f02007-02-12 00:53:34 -0800223 resp->status = nlmclnt_grant(svc_addr_in(rqstp), &argp->lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700224 dprintk("lockd: GRANTED status %d\n", ntohl(resp->status));
225 return rpc_success;
226}
227
228/*
Trond Myklebustd4716622006-03-20 13:44:45 -0500229 * This is the generic lockd callback for async RPC calls
230 */
231static void nlm4svc_callback_exit(struct rpc_task *task, void *data)
232{
Chuck Leverc041b5f2006-12-05 16:36:03 -0500233 dprintk("lockd: %5u callback returned %d\n", task->tk_pid,
Trond Myklebustd4716622006-03-20 13:44:45 -0500234 -task->tk_status);
235}
236
237static void nlm4svc_callback_release(void *data)
238{
Trond Myklebusta86dc492008-06-11 13:37:09 -0400239 lock_kernel();
Trond Myklebustd4716622006-03-20 13:44:45 -0500240 nlm_release_call(data);
Trond Myklebusta86dc492008-06-11 13:37:09 -0400241 unlock_kernel();
Trond Myklebustd4716622006-03-20 13:44:45 -0500242}
243
244static const struct rpc_call_ops nlm4svc_callback_ops = {
245 .rpc_call_done = nlm4svc_callback_exit,
246 .rpc_release = nlm4svc_callback_release,
247};
248
249/*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700250 * `Async' versions of the above service routines. They aren't really,
251 * because we send the callback before the reply proper. I hope this
252 * doesn't break any clients.
253 */
Al Viro7111c662006-10-19 23:28:45 -0700254static __be32 nlm4svc_callback(struct svc_rqst *rqstp, u32 proc, struct nlm_args *argp,
255 __be32 (*func)(struct svc_rqst *, struct nlm_args *, struct nlm_res *))
Trond Myklebustd4716622006-03-20 13:44:45 -0500256{
257 struct nlm_host *host;
258 struct nlm_rqst *call;
Al Viro7111c662006-10-19 23:28:45 -0700259 __be32 stat;
Trond Myklebustd4716622006-03-20 13:44:45 -0500260
Olaf Kirchdb4e4c92006-10-04 02:15:52 -0700261 host = nlmsvc_lookup_host(rqstp,
262 argp->lock.caller,
263 argp->lock.len);
Trond Myklebustd4716622006-03-20 13:44:45 -0500264 if (host == NULL)
265 return rpc_system_err;
266
267 call = nlm_alloc_call(host);
268 if (call == NULL)
269 return rpc_system_err;
270
271 stat = func(rqstp, argp, &call->a_res);
272 if (stat != 0) {
273 nlm_release_call(call);
274 return stat;
275 }
276
277 call->a_flags = RPC_TASK_ASYNC;
278 if (nlm_async_reply(call, proc, &nlm4svc_callback_ops) < 0)
279 return rpc_system_err;
280 return rpc_success;
281}
282
Al Viro7111c662006-10-19 23:28:45 -0700283static __be32 nlm4svc_proc_test_msg(struct svc_rqst *rqstp, struct nlm_args *argp,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700284 void *resp)
285{
Linus Torvalds1da177e2005-04-16 15:20:36 -0700286 dprintk("lockd: TEST_MSG called\n");
Trond Myklebustd4716622006-03-20 13:44:45 -0500287 return nlm4svc_callback(rqstp, NLMPROC_TEST_RES, argp, nlm4svc_proc_test);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700288}
289
Al Viro7111c662006-10-19 23:28:45 -0700290static __be32 nlm4svc_proc_lock_msg(struct svc_rqst *rqstp, struct nlm_args *argp,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700291 void *resp)
292{
Linus Torvalds1da177e2005-04-16 15:20:36 -0700293 dprintk("lockd: LOCK_MSG called\n");
Trond Myklebustd4716622006-03-20 13:44:45 -0500294 return nlm4svc_callback(rqstp, NLMPROC_LOCK_RES, argp, nlm4svc_proc_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700295}
296
Al Viro7111c662006-10-19 23:28:45 -0700297static __be32 nlm4svc_proc_cancel_msg(struct svc_rqst *rqstp, struct nlm_args *argp,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700298 void *resp)
299{
Linus Torvalds1da177e2005-04-16 15:20:36 -0700300 dprintk("lockd: CANCEL_MSG called\n");
Trond Myklebustd4716622006-03-20 13:44:45 -0500301 return nlm4svc_callback(rqstp, NLMPROC_CANCEL_RES, argp, nlm4svc_proc_cancel);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700302}
303
Al Viro7111c662006-10-19 23:28:45 -0700304static __be32 nlm4svc_proc_unlock_msg(struct svc_rqst *rqstp, struct nlm_args *argp,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700305 void *resp)
306{
Linus Torvalds1da177e2005-04-16 15:20:36 -0700307 dprintk("lockd: UNLOCK_MSG called\n");
Trond Myklebustd4716622006-03-20 13:44:45 -0500308 return nlm4svc_callback(rqstp, NLMPROC_UNLOCK_RES, argp, nlm4svc_proc_unlock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700309}
310
Al Viro7111c662006-10-19 23:28:45 -0700311static __be32 nlm4svc_proc_granted_msg(struct svc_rqst *rqstp, struct nlm_args *argp,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700312 void *resp)
313{
Linus Torvalds1da177e2005-04-16 15:20:36 -0700314 dprintk("lockd: GRANTED_MSG called\n");
Trond Myklebustd4716622006-03-20 13:44:45 -0500315 return nlm4svc_callback(rqstp, NLMPROC_GRANTED_RES, argp, nlm4svc_proc_granted);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700316}
317
318/*
319 * SHARE: create a DOS share or alter existing share.
320 */
Al Viro7111c662006-10-19 23:28:45 -0700321static __be32
Linus Torvalds1da177e2005-04-16 15:20:36 -0700322nlm4svc_proc_share(struct svc_rqst *rqstp, struct nlm_args *argp,
323 struct nlm_res *resp)
324{
325 struct nlm_host *host;
326 struct nlm_file *file;
327
328 dprintk("lockd: SHARE called\n");
329
330 resp->cookie = argp->cookie;
331
332 /* Don't accept new lock requests during grace period */
J. Bruce Fieldsaf558e32007-09-06 12:34:25 -0400333 if (locks_in_grace() && !argp->reclaim) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700334 resp->status = nlm_lck_denied_grace_period;
335 return rpc_success;
336 }
337
338 /* Obtain client and file */
339 if ((resp->status = nlm4svc_retrieve_args(rqstp, argp, &host, &file)))
NeilBrownd343fce2006-10-17 00:10:18 -0700340 return resp->status == nlm_drop_reply ? rpc_drop_reply :rpc_success;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700341
342 /* Now try to create the share */
343 resp->status = nlmsvc_share_file(host, file, argp);
344
345 dprintk("lockd: SHARE status %d\n", ntohl(resp->status));
346 nlm_release_host(host);
347 nlm_release_file(file);
348 return rpc_success;
349}
350
351/*
352 * UNSHARE: Release a DOS share.
353 */
Al Viro7111c662006-10-19 23:28:45 -0700354static __be32
Linus Torvalds1da177e2005-04-16 15:20:36 -0700355nlm4svc_proc_unshare(struct svc_rqst *rqstp, struct nlm_args *argp,
356 struct nlm_res *resp)
357{
358 struct nlm_host *host;
359 struct nlm_file *file;
360
361 dprintk("lockd: UNSHARE called\n");
362
363 resp->cookie = argp->cookie;
364
365 /* Don't accept requests during grace period */
J. Bruce Fieldsaf558e32007-09-06 12:34:25 -0400366 if (locks_in_grace()) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700367 resp->status = nlm_lck_denied_grace_period;
368 return rpc_success;
369 }
370
371 /* Obtain client and file */
372 if ((resp->status = nlm4svc_retrieve_args(rqstp, argp, &host, &file)))
NeilBrownd343fce2006-10-17 00:10:18 -0700373 return resp->status == nlm_drop_reply ? rpc_drop_reply :rpc_success;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700374
375 /* Now try to lock the file */
376 resp->status = nlmsvc_unshare_file(host, file, argp);
377
378 dprintk("lockd: UNSHARE status %d\n", ntohl(resp->status));
379 nlm_release_host(host);
380 nlm_release_file(file);
381 return rpc_success;
382}
383
384/*
385 * NM_LOCK: Create an unmonitored lock
386 */
Al Viro7111c662006-10-19 23:28:45 -0700387static __be32
Linus Torvalds1da177e2005-04-16 15:20:36 -0700388nlm4svc_proc_nm_lock(struct svc_rqst *rqstp, struct nlm_args *argp,
389 struct nlm_res *resp)
390{
391 dprintk("lockd: NM_LOCK called\n");
392
393 argp->monitor = 0; /* just clean the monitor flag */
394 return nlm4svc_proc_lock(rqstp, argp, resp);
395}
396
397/*
398 * FREE_ALL: Release all locks and shares held by client
399 */
Al Viro7111c662006-10-19 23:28:45 -0700400static __be32
Linus Torvalds1da177e2005-04-16 15:20:36 -0700401nlm4svc_proc_free_all(struct svc_rqst *rqstp, struct nlm_args *argp,
402 void *resp)
403{
404 struct nlm_host *host;
405
406 /* Obtain client */
407 if (nlm4svc_retrieve_args(rqstp, argp, &host, NULL))
408 return rpc_success;
409
410 nlmsvc_free_host_resources(host);
411 nlm_release_host(host);
412 return rpc_success;
413}
414
415/*
416 * SM_NOTIFY: private callback from statd (not part of official NLM proto)
417 */
Al Viro7111c662006-10-19 23:28:45 -0700418static __be32
Linus Torvalds1da177e2005-04-16 15:20:36 -0700419nlm4svc_proc_sm_notify(struct svc_rqst *rqstp, struct nlm_reboot *argp,
420 void *resp)
421{
Chuck Lever27459f02007-02-12 00:53:34 -0800422 struct sockaddr_in saddr;
423
424 memcpy(&saddr, svc_addr_in(rqstp), sizeof(saddr));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700425
426 dprintk("lockd: SM_NOTIFY called\n");
427 if (saddr.sin_addr.s_addr != htonl(INADDR_LOOPBACK)
428 || ntohs(saddr.sin_port) >= 1024) {
Chuck Leverad06e4b2007-02-12 00:53:32 -0800429 char buf[RPC_MAX_ADDRBUFLEN];
430 printk(KERN_WARNING "lockd: rejected NSM callback from %s\n",
431 svc_print_addr(rqstp, buf, sizeof(buf)));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700432 return rpc_system_err;
433 }
434
435 /* Obtain the host pointer for this NFS server and try to
436 * reclaim all locks we hold on this server.
437 */
Olaf Kirchcf712c22006-10-04 02:15:52 -0700438 memset(&saddr, 0, sizeof(saddr));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700439 saddr.sin_addr.s_addr = argp->addr;
Olaf Kirch5c8dd292006-10-04 02:15:55 -0700440 nlm_host_rebooted(&saddr, argp->mon, argp->len, argp->state);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700441
Linus Torvalds1da177e2005-04-16 15:20:36 -0700442 return rpc_success;
443}
444
445/*
446 * client sent a GRANTED_RES, let's remove the associated block
447 */
Al Viro7111c662006-10-19 23:28:45 -0700448static __be32
Linus Torvalds1da177e2005-04-16 15:20:36 -0700449nlm4svc_proc_granted_res(struct svc_rqst *rqstp, struct nlm_res *argp,
450 void *resp)
451{
452 if (!nlmsvc_ops)
453 return rpc_success;
454
455 dprintk("lockd: GRANTED_RES called\n");
456
Olaf Kirch39be4502006-10-04 02:16:03 -0700457 nlmsvc_grant_reply(&argp->cookie, argp->status);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700458 return rpc_success;
459}
460
461
Linus Torvalds1da177e2005-04-16 15:20:36 -0700462/*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700463 * NLM Server procedures.
464 */
465
466#define nlm4svc_encode_norep nlm4svc_encode_void
467#define nlm4svc_decode_norep nlm4svc_decode_void
468#define nlm4svc_decode_testres nlm4svc_decode_void
469#define nlm4svc_decode_lockres nlm4svc_decode_void
470#define nlm4svc_decode_unlockres nlm4svc_decode_void
471#define nlm4svc_decode_cancelres nlm4svc_decode_void
472#define nlm4svc_decode_grantedres nlm4svc_decode_void
473
474#define nlm4svc_proc_none nlm4svc_proc_null
475#define nlm4svc_proc_test_res nlm4svc_proc_null
476#define nlm4svc_proc_lock_res nlm4svc_proc_null
477#define nlm4svc_proc_cancel_res nlm4svc_proc_null
478#define nlm4svc_proc_unlock_res nlm4svc_proc_null
479
480struct nlm_void { int dummy; };
481
482#define PROC(name, xargt, xrest, argt, rest, respsize) \
483 { .pc_func = (svc_procfunc) nlm4svc_proc_##name, \
484 .pc_decode = (kxdrproc_t) nlm4svc_decode_##xargt, \
485 .pc_encode = (kxdrproc_t) nlm4svc_encode_##xrest, \
486 .pc_release = NULL, \
487 .pc_argsize = sizeof(struct nlm_##argt), \
488 .pc_ressize = sizeof(struct nlm_##rest), \
489 .pc_xdrressize = respsize, \
490 }
491#define Ck (1+XDR_QUADLEN(NLM_MAXCOOKIELEN)) /* cookie */
492#define No (1+1024/4) /* netobj */
493#define St 1 /* status */
494#define Rg 4 /* range (offset + length) */
495struct svc_procedure nlmsvc_procedures4[] = {
496 PROC(null, void, void, void, void, 1),
497 PROC(test, testargs, testres, args, res, Ck+St+2+No+Rg),
498 PROC(lock, lockargs, res, args, res, Ck+St),
499 PROC(cancel, cancargs, res, args, res, Ck+St),
500 PROC(unlock, unlockargs, res, args, res, Ck+St),
501 PROC(granted, testargs, res, args, res, Ck+St),
502 PROC(test_msg, testargs, norep, args, void, 1),
503 PROC(lock_msg, lockargs, norep, args, void, 1),
504 PROC(cancel_msg, cancargs, norep, args, void, 1),
505 PROC(unlock_msg, unlockargs, norep, args, void, 1),
506 PROC(granted_msg, testargs, norep, args, void, 1),
507 PROC(test_res, testres, norep, res, void, 1),
508 PROC(lock_res, lockres, norep, res, void, 1),
509 PROC(cancel_res, cancelres, norep, res, void, 1),
510 PROC(unlock_res, unlockres, norep, res, void, 1),
511 PROC(granted_res, res, norep, res, void, 1),
512 /* statd callback */
513 PROC(sm_notify, reboot, void, reboot, void, 1),
514 PROC(none, void, void, void, void, 0),
515 PROC(none, void, void, void, void, 0),
516 PROC(none, void, void, void, void, 0),
517 PROC(share, shareargs, shareres, args, res, Ck+St+1),
518 PROC(unshare, shareargs, shareres, args, res, Ck+St+1),
519 PROC(nm_lock, lockargs, res, args, res, Ck+St),
520 PROC(free_all, notify, void, args, void, 1),
521
522};