xref: /openbmc/linux/fs/lockd/svc4proc.c (revision 75c7940d)
1 // SPDX-License-Identifier: GPL-2.0
2 /*
3  * linux/fs/lockd/svc4proc.c
4  *
5  * Lockd server procedures. We don't implement the NLM_*_RES
6  * procedures because we don't use the async procedures.
7  *
8  * Copyright (C) 1996, Olaf Kirch <okir@monad.swb.de>
9  */
10 
11 #include <linux/types.h>
12 #include <linux/time.h>
13 #include <linux/lockd/lockd.h>
14 #include <linux/lockd/share.h>
15 #include <linux/sunrpc/svc_xprt.h>
16 
17 #define NLMDBG_FACILITY		NLMDBG_CLIENT
18 
19 /*
20  * Obtain client and file from arguments
21  */
22 static __be32
nlm4svc_retrieve_args(struct svc_rqst * rqstp,struct nlm_args * argp,struct nlm_host ** hostp,struct nlm_file ** filp)23 nlm4svc_retrieve_args(struct svc_rqst *rqstp, struct nlm_args *argp,
24 			struct nlm_host **hostp, struct nlm_file **filp)
25 {
26 	struct nlm_host		*host = NULL;
27 	struct nlm_file		*file = NULL;
28 	struct nlm_lock		*lock = &argp->lock;
29 	__be32			error = 0;
30 
31 	/* nfsd callbacks must have been installed for this procedure */
32 	if (!nlmsvc_ops)
33 		return nlm_lck_denied_nolocks;
34 
35 	if (lock->lock_start > OFFSET_MAX ||
36 	    (lock->lock_len && ((lock->lock_len - 1) > (OFFSET_MAX - lock->lock_start))))
37 		return nlm4_fbig;
38 
39 	/* Obtain host handle */
40 	if (!(host = nlmsvc_lookup_host(rqstp, lock->caller, lock->len))
41 	 || (argp->monitor && nsm_monitor(host) < 0))
42 		goto no_locks;
43 	*hostp = host;
44 
45 	/* Obtain file pointer. Not used by FREE_ALL call. */
46 	if (filp != NULL) {
47 		int mode = lock_to_openmode(&lock->fl);
48 
49 		error = nlm_lookup_file(rqstp, &file, lock);
50 		if (error)
51 			goto no_locks;
52 		*filp = file;
53 
54 		/* Set up the missing parts of the file_lock structure */
55 		lock->fl.fl_flags = FL_POSIX;
56 		lock->fl.fl_file  = file->f_file[mode];
57 		lock->fl.fl_pid = current->tgid;
58 		lock->fl.fl_start = (loff_t)lock->lock_start;
59 		lock->fl.fl_end = lock->lock_len ?
60 				   (loff_t)(lock->lock_start + lock->lock_len - 1) :
61 				   OFFSET_MAX;
62 		lock->fl.fl_lmops = &nlmsvc_lock_operations;
63 		nlmsvc_locks_init_private(&lock->fl, host, (pid_t)lock->svid);
64 		if (!lock->fl.fl_owner) {
65 			/* lockowner allocation has failed */
66 			nlmsvc_release_host(host);
67 			return nlm_lck_denied_nolocks;
68 		}
69 	}
70 
71 	return 0;
72 
73 no_locks:
74 	nlmsvc_release_host(host);
75  	if (error)
76 		return error;
77 	return nlm_lck_denied_nolocks;
78 }
79 
80 /*
81  * NULL: Test for presence of service
82  */
83 static __be32
nlm4svc_proc_null(struct svc_rqst * rqstp)84 nlm4svc_proc_null(struct svc_rqst *rqstp)
85 {
86 	dprintk("lockd: NULL          called\n");
87 	return rpc_success;
88 }
89 
90 /*
91  * TEST: Check for conflicting lock
92  */
93 static __be32
__nlm4svc_proc_test(struct svc_rqst * rqstp,struct nlm_res * resp)94 __nlm4svc_proc_test(struct svc_rqst *rqstp, struct nlm_res *resp)
95 {
96 	struct nlm_args *argp = rqstp->rq_argp;
97 	struct nlm_host	*host;
98 	struct nlm_file	*file;
99 	struct nlm_lockowner *test_owner;
100 	__be32 rc = rpc_success;
101 
102 	dprintk("lockd: TEST4        called\n");
103 	resp->cookie = argp->cookie;
104 
105 	/* Obtain client and file */
106 	if ((resp->status = nlm4svc_retrieve_args(rqstp, argp, &host, &file)))
107 		return resp->status == nlm_drop_reply ? rpc_drop_reply :rpc_success;
108 
109 	test_owner = argp->lock.fl.fl_owner;
110 	/* Now check for conflicting locks */
111 	resp->status = nlmsvc_testlock(rqstp, file, host, &argp->lock, &resp->lock, &resp->cookie);
112 	if (resp->status == nlm_drop_reply)
113 		rc = rpc_drop_reply;
114 	else
115 		dprintk("lockd: TEST4        status %d\n", ntohl(resp->status));
116 
117 	nlmsvc_put_lockowner(test_owner);
118 	nlmsvc_release_host(host);
119 	nlm_release_file(file);
120 	return rc;
121 }
122 
123 static __be32
nlm4svc_proc_test(struct svc_rqst * rqstp)124 nlm4svc_proc_test(struct svc_rqst *rqstp)
125 {
126 	return __nlm4svc_proc_test(rqstp, rqstp->rq_resp);
127 }
128 
129 static __be32
__nlm4svc_proc_lock(struct svc_rqst * rqstp,struct nlm_res * resp)130 __nlm4svc_proc_lock(struct svc_rqst *rqstp, struct nlm_res *resp)
131 {
132 	struct nlm_args *argp = rqstp->rq_argp;
133 	struct nlm_host	*host;
134 	struct nlm_file	*file;
135 	__be32 rc = rpc_success;
136 
137 	dprintk("lockd: LOCK          called\n");
138 
139 	resp->cookie = argp->cookie;
140 
141 	/* Obtain client and file */
142 	if ((resp->status = nlm4svc_retrieve_args(rqstp, argp, &host, &file)))
143 		return resp->status == nlm_drop_reply ? rpc_drop_reply :rpc_success;
144 
145 #if 0
146 	/* If supplied state doesn't match current state, we assume it's
147 	 * an old request that time-warped somehow. Any error return would
148 	 * do in this case because it's irrelevant anyway.
149 	 *
150 	 * NB: We don't retrieve the remote host's state yet.
151 	 */
152 	if (host->h_nsmstate && host->h_nsmstate != argp->state) {
153 		resp->status = nlm_lck_denied_nolocks;
154 	} else
155 #endif
156 
157 	/* Now try to lock the file */
158 	resp->status = nlmsvc_lock(rqstp, file, host, &argp->lock,
159 					argp->block, &argp->cookie,
160 					argp->reclaim);
161 	if (resp->status == nlm_drop_reply)
162 		rc = rpc_drop_reply;
163 	else
164 		dprintk("lockd: LOCK         status %d\n", ntohl(resp->status));
165 
166 	nlmsvc_release_lockowner(&argp->lock);
167 	nlmsvc_release_host(host);
168 	nlm_release_file(file);
169 	return rc;
170 }
171 
172 static __be32
nlm4svc_proc_lock(struct svc_rqst * rqstp)173 nlm4svc_proc_lock(struct svc_rqst *rqstp)
174 {
175 	return __nlm4svc_proc_lock(rqstp, rqstp->rq_resp);
176 }
177 
178 static __be32
__nlm4svc_proc_cancel(struct svc_rqst * rqstp,struct nlm_res * resp)179 __nlm4svc_proc_cancel(struct svc_rqst *rqstp, struct nlm_res *resp)
180 {
181 	struct nlm_args *argp = rqstp->rq_argp;
182 	struct nlm_host	*host;
183 	struct nlm_file	*file;
184 
185 	dprintk("lockd: CANCEL        called\n");
186 
187 	resp->cookie = argp->cookie;
188 
189 	/* Don't accept requests during grace period */
190 	if (locks_in_grace(SVC_NET(rqstp))) {
191 		resp->status = nlm_lck_denied_grace_period;
192 		return rpc_success;
193 	}
194 
195 	/* Obtain client and file */
196 	if ((resp->status = nlm4svc_retrieve_args(rqstp, argp, &host, &file)))
197 		return resp->status == nlm_drop_reply ? rpc_drop_reply :rpc_success;
198 
199 	/* Try to cancel request. */
200 	resp->status = nlmsvc_cancel_blocked(SVC_NET(rqstp), file, &argp->lock);
201 
202 	dprintk("lockd: CANCEL        status %d\n", ntohl(resp->status));
203 	nlmsvc_release_lockowner(&argp->lock);
204 	nlmsvc_release_host(host);
205 	nlm_release_file(file);
206 	return rpc_success;
207 }
208 
209 static __be32
nlm4svc_proc_cancel(struct svc_rqst * rqstp)210 nlm4svc_proc_cancel(struct svc_rqst *rqstp)
211 {
212 	return __nlm4svc_proc_cancel(rqstp, rqstp->rq_resp);
213 }
214 
215 /*
216  * UNLOCK: release a lock
217  */
218 static __be32
__nlm4svc_proc_unlock(struct svc_rqst * rqstp,struct nlm_res * resp)219 __nlm4svc_proc_unlock(struct svc_rqst *rqstp, struct nlm_res *resp)
220 {
221 	struct nlm_args *argp = rqstp->rq_argp;
222 	struct nlm_host	*host;
223 	struct nlm_file	*file;
224 
225 	dprintk("lockd: UNLOCK        called\n");
226 
227 	resp->cookie = argp->cookie;
228 
229 	/* Don't accept new lock requests during grace period */
230 	if (locks_in_grace(SVC_NET(rqstp))) {
231 		resp->status = nlm_lck_denied_grace_period;
232 		return rpc_success;
233 	}
234 
235 	/* Obtain client and file */
236 	if ((resp->status = nlm4svc_retrieve_args(rqstp, argp, &host, &file)))
237 		return resp->status == nlm_drop_reply ? rpc_drop_reply :rpc_success;
238 
239 	/* Now try to remove the lock */
240 	resp->status = nlmsvc_unlock(SVC_NET(rqstp), file, &argp->lock);
241 
242 	dprintk("lockd: UNLOCK        status %d\n", ntohl(resp->status));
243 	nlmsvc_release_lockowner(&argp->lock);
244 	nlmsvc_release_host(host);
245 	nlm_release_file(file);
246 	return rpc_success;
247 }
248 
249 static __be32
nlm4svc_proc_unlock(struct svc_rqst * rqstp)250 nlm4svc_proc_unlock(struct svc_rqst *rqstp)
251 {
252 	return __nlm4svc_proc_unlock(rqstp, rqstp->rq_resp);
253 }
254 
255 /*
256  * GRANTED: A server calls us to tell that a process' lock request
257  * was granted
258  */
259 static __be32
__nlm4svc_proc_granted(struct svc_rqst * rqstp,struct nlm_res * resp)260 __nlm4svc_proc_granted(struct svc_rqst *rqstp, struct nlm_res *resp)
261 {
262 	struct nlm_args *argp = rqstp->rq_argp;
263 
264 	resp->cookie = argp->cookie;
265 
266 	dprintk("lockd: GRANTED       called\n");
267 	resp->status = nlmclnt_grant(svc_addr(rqstp), &argp->lock);
268 	dprintk("lockd: GRANTED       status %d\n", ntohl(resp->status));
269 	return rpc_success;
270 }
271 
272 static __be32
nlm4svc_proc_granted(struct svc_rqst * rqstp)273 nlm4svc_proc_granted(struct svc_rqst *rqstp)
274 {
275 	return __nlm4svc_proc_granted(rqstp, rqstp->rq_resp);
276 }
277 
278 /*
279  * This is the generic lockd callback for async RPC calls
280  */
nlm4svc_callback_exit(struct rpc_task * task,void * data)281 static void nlm4svc_callback_exit(struct rpc_task *task, void *data)
282 {
283 }
284 
nlm4svc_callback_release(void * data)285 static void nlm4svc_callback_release(void *data)
286 {
287 	nlmsvc_release_call(data);
288 }
289 
290 static const struct rpc_call_ops nlm4svc_callback_ops = {
291 	.rpc_call_done = nlm4svc_callback_exit,
292 	.rpc_release = nlm4svc_callback_release,
293 };
294 
295 /*
296  * `Async' versions of the above service routines. They aren't really,
297  * because we send the callback before the reply proper. I hope this
298  * doesn't break any clients.
299  */
nlm4svc_callback(struct svc_rqst * rqstp,u32 proc,__be32 (* func)(struct svc_rqst *,struct nlm_res *))300 static __be32 nlm4svc_callback(struct svc_rqst *rqstp, u32 proc,
301 		__be32 (*func)(struct svc_rqst *,  struct nlm_res *))
302 {
303 	struct nlm_args *argp = rqstp->rq_argp;
304 	struct nlm_host	*host;
305 	struct nlm_rqst	*call;
306 	__be32 stat;
307 
308 	host = nlmsvc_lookup_host(rqstp,
309 				  argp->lock.caller,
310 				  argp->lock.len);
311 	if (host == NULL)
312 		return rpc_system_err;
313 
314 	call = nlm_alloc_call(host);
315 	nlmsvc_release_host(host);
316 	if (call == NULL)
317 		return rpc_system_err;
318 
319 	stat = func(rqstp, &call->a_res);
320 	if (stat != 0) {
321 		nlmsvc_release_call(call);
322 		return stat;
323 	}
324 
325 	call->a_flags = RPC_TASK_ASYNC;
326 	if (nlm_async_reply(call, proc, &nlm4svc_callback_ops) < 0)
327 		return rpc_system_err;
328 	return rpc_success;
329 }
330 
nlm4svc_proc_test_msg(struct svc_rqst * rqstp)331 static __be32 nlm4svc_proc_test_msg(struct svc_rqst *rqstp)
332 {
333 	dprintk("lockd: TEST_MSG      called\n");
334 	return nlm4svc_callback(rqstp, NLMPROC_TEST_RES, __nlm4svc_proc_test);
335 }
336 
nlm4svc_proc_lock_msg(struct svc_rqst * rqstp)337 static __be32 nlm4svc_proc_lock_msg(struct svc_rqst *rqstp)
338 {
339 	dprintk("lockd: LOCK_MSG      called\n");
340 	return nlm4svc_callback(rqstp, NLMPROC_LOCK_RES, __nlm4svc_proc_lock);
341 }
342 
nlm4svc_proc_cancel_msg(struct svc_rqst * rqstp)343 static __be32 nlm4svc_proc_cancel_msg(struct svc_rqst *rqstp)
344 {
345 	dprintk("lockd: CANCEL_MSG    called\n");
346 	return nlm4svc_callback(rqstp, NLMPROC_CANCEL_RES, __nlm4svc_proc_cancel);
347 }
348 
nlm4svc_proc_unlock_msg(struct svc_rqst * rqstp)349 static __be32 nlm4svc_proc_unlock_msg(struct svc_rqst *rqstp)
350 {
351 	dprintk("lockd: UNLOCK_MSG    called\n");
352 	return nlm4svc_callback(rqstp, NLMPROC_UNLOCK_RES, __nlm4svc_proc_unlock);
353 }
354 
nlm4svc_proc_granted_msg(struct svc_rqst * rqstp)355 static __be32 nlm4svc_proc_granted_msg(struct svc_rqst *rqstp)
356 {
357 	dprintk("lockd: GRANTED_MSG   called\n");
358 	return nlm4svc_callback(rqstp, NLMPROC_GRANTED_RES, __nlm4svc_proc_granted);
359 }
360 
361 /*
362  * SHARE: create a DOS share or alter existing share.
363  */
364 static __be32
nlm4svc_proc_share(struct svc_rqst * rqstp)365 nlm4svc_proc_share(struct svc_rqst *rqstp)
366 {
367 	struct nlm_args *argp = rqstp->rq_argp;
368 	struct nlm_res *resp = rqstp->rq_resp;
369 	struct nlm_host	*host;
370 	struct nlm_file	*file;
371 
372 	dprintk("lockd: SHARE         called\n");
373 
374 	resp->cookie = argp->cookie;
375 
376 	/* Don't accept new lock requests during grace period */
377 	if (locks_in_grace(SVC_NET(rqstp)) && !argp->reclaim) {
378 		resp->status = nlm_lck_denied_grace_period;
379 		return rpc_success;
380 	}
381 
382 	/* Obtain client and file */
383 	if ((resp->status = nlm4svc_retrieve_args(rqstp, argp, &host, &file)))
384 		return resp->status == nlm_drop_reply ? rpc_drop_reply :rpc_success;
385 
386 	/* Now try to create the share */
387 	resp->status = nlmsvc_share_file(host, file, argp);
388 
389 	dprintk("lockd: SHARE         status %d\n", ntohl(resp->status));
390 	nlmsvc_release_lockowner(&argp->lock);
391 	nlmsvc_release_host(host);
392 	nlm_release_file(file);
393 	return rpc_success;
394 }
395 
396 /*
397  * UNSHARE: Release a DOS share.
398  */
399 static __be32
nlm4svc_proc_unshare(struct svc_rqst * rqstp)400 nlm4svc_proc_unshare(struct svc_rqst *rqstp)
401 {
402 	struct nlm_args *argp = rqstp->rq_argp;
403 	struct nlm_res *resp = rqstp->rq_resp;
404 	struct nlm_host	*host;
405 	struct nlm_file	*file;
406 
407 	dprintk("lockd: UNSHARE       called\n");
408 
409 	resp->cookie = argp->cookie;
410 
411 	/* Don't accept requests during grace period */
412 	if (locks_in_grace(SVC_NET(rqstp))) {
413 		resp->status = nlm_lck_denied_grace_period;
414 		return rpc_success;
415 	}
416 
417 	/* Obtain client and file */
418 	if ((resp->status = nlm4svc_retrieve_args(rqstp, argp, &host, &file)))
419 		return resp->status == nlm_drop_reply ? rpc_drop_reply :rpc_success;
420 
421 	/* Now try to lock the file */
422 	resp->status = nlmsvc_unshare_file(host, file, argp);
423 
424 	dprintk("lockd: UNSHARE       status %d\n", ntohl(resp->status));
425 	nlmsvc_release_lockowner(&argp->lock);
426 	nlmsvc_release_host(host);
427 	nlm_release_file(file);
428 	return rpc_success;
429 }
430 
431 /*
432  * NM_LOCK: Create an unmonitored lock
433  */
434 static __be32
nlm4svc_proc_nm_lock(struct svc_rqst * rqstp)435 nlm4svc_proc_nm_lock(struct svc_rqst *rqstp)
436 {
437 	struct nlm_args *argp = rqstp->rq_argp;
438 
439 	dprintk("lockd: NM_LOCK       called\n");
440 
441 	argp->monitor = 0;		/* just clean the monitor flag */
442 	return nlm4svc_proc_lock(rqstp);
443 }
444 
445 /*
446  * FREE_ALL: Release all locks and shares held by client
447  */
448 static __be32
nlm4svc_proc_free_all(struct svc_rqst * rqstp)449 nlm4svc_proc_free_all(struct svc_rqst *rqstp)
450 {
451 	struct nlm_args *argp = rqstp->rq_argp;
452 	struct nlm_host	*host;
453 
454 	/* Obtain client */
455 	if (nlm4svc_retrieve_args(rqstp, argp, &host, NULL))
456 		return rpc_success;
457 
458 	nlmsvc_free_host_resources(host);
459 	nlmsvc_release_host(host);
460 	return rpc_success;
461 }
462 
463 /*
464  * SM_NOTIFY: private callback from statd (not part of official NLM proto)
465  */
466 static __be32
nlm4svc_proc_sm_notify(struct svc_rqst * rqstp)467 nlm4svc_proc_sm_notify(struct svc_rqst *rqstp)
468 {
469 	struct nlm_reboot *argp = rqstp->rq_argp;
470 
471 	dprintk("lockd: SM_NOTIFY     called\n");
472 
473 	if (!nlm_privileged_requester(rqstp)) {
474 		char buf[RPC_MAX_ADDRBUFLEN];
475 		printk(KERN_WARNING "lockd: rejected NSM callback from %s\n",
476 				svc_print_addr(rqstp, buf, sizeof(buf)));
477 		return rpc_system_err;
478 	}
479 
480 	nlm_host_rebooted(SVC_NET(rqstp), argp);
481 	return rpc_success;
482 }
483 
484 /*
485  * client sent a GRANTED_RES, let's remove the associated block
486  */
487 static __be32
nlm4svc_proc_granted_res(struct svc_rqst * rqstp)488 nlm4svc_proc_granted_res(struct svc_rqst *rqstp)
489 {
490 	struct nlm_res *argp = rqstp->rq_argp;
491 
492         if (!nlmsvc_ops)
493                 return rpc_success;
494 
495         dprintk("lockd: GRANTED_RES   called\n");
496 
497         nlmsvc_grant_reply(&argp->cookie, argp->status);
498         return rpc_success;
499 }
500 
501 static __be32
nlm4svc_proc_unused(struct svc_rqst * rqstp)502 nlm4svc_proc_unused(struct svc_rqst *rqstp)
503 {
504 	return rpc_proc_unavail;
505 }
506 
507 
508 /*
509  * NLM Server procedures.
510  */
511 
512 struct nlm_void			{ int dummy; };
513 
514 #define	Ck	(1+XDR_QUADLEN(NLM_MAXCOOKIELEN))	/* cookie */
515 #define	No	(1+1024/4)				/* netobj */
516 #define	St	1					/* status */
517 #define	Rg	4					/* range (offset + length) */
518 
519 const struct svc_procedure nlmsvc_procedures4[24] = {
520 	[NLMPROC_NULL] = {
521 		.pc_func = nlm4svc_proc_null,
522 		.pc_decode = nlm4svc_decode_void,
523 		.pc_encode = nlm4svc_encode_void,
524 		.pc_argsize = sizeof(struct nlm_void),
525 		.pc_argzero = sizeof(struct nlm_void),
526 		.pc_ressize = sizeof(struct nlm_void),
527 		.pc_xdrressize = St,
528 		.pc_name = "NULL",
529 	},
530 	[NLMPROC_TEST] = {
531 		.pc_func = nlm4svc_proc_test,
532 		.pc_decode = nlm4svc_decode_testargs,
533 		.pc_encode = nlm4svc_encode_testres,
534 		.pc_argsize = sizeof(struct nlm_args),
535 		.pc_argzero = sizeof(struct nlm_args),
536 		.pc_ressize = sizeof(struct nlm_res),
537 		.pc_xdrressize = Ck+St+2+No+Rg,
538 		.pc_name = "TEST",
539 	},
540 	[NLMPROC_LOCK] = {
541 		.pc_func = nlm4svc_proc_lock,
542 		.pc_decode = nlm4svc_decode_lockargs,
543 		.pc_encode = nlm4svc_encode_res,
544 		.pc_argsize = sizeof(struct nlm_args),
545 		.pc_argzero = sizeof(struct nlm_args),
546 		.pc_ressize = sizeof(struct nlm_res),
547 		.pc_xdrressize = Ck+St,
548 		.pc_name = "LOCK",
549 	},
550 	[NLMPROC_CANCEL] = {
551 		.pc_func = nlm4svc_proc_cancel,
552 		.pc_decode = nlm4svc_decode_cancargs,
553 		.pc_encode = nlm4svc_encode_res,
554 		.pc_argsize = sizeof(struct nlm_args),
555 		.pc_argzero = sizeof(struct nlm_args),
556 		.pc_ressize = sizeof(struct nlm_res),
557 		.pc_xdrressize = Ck+St,
558 		.pc_name = "CANCEL",
559 	},
560 	[NLMPROC_UNLOCK] = {
561 		.pc_func = nlm4svc_proc_unlock,
562 		.pc_decode = nlm4svc_decode_unlockargs,
563 		.pc_encode = nlm4svc_encode_res,
564 		.pc_argsize = sizeof(struct nlm_args),
565 		.pc_argzero = sizeof(struct nlm_args),
566 		.pc_ressize = sizeof(struct nlm_res),
567 		.pc_xdrressize = Ck+St,
568 		.pc_name = "UNLOCK",
569 	},
570 	[NLMPROC_GRANTED] = {
571 		.pc_func = nlm4svc_proc_granted,
572 		.pc_decode = nlm4svc_decode_testargs,
573 		.pc_encode = nlm4svc_encode_res,
574 		.pc_argsize = sizeof(struct nlm_args),
575 		.pc_argzero = sizeof(struct nlm_args),
576 		.pc_ressize = sizeof(struct nlm_res),
577 		.pc_xdrressize = Ck+St,
578 		.pc_name = "GRANTED",
579 	},
580 	[NLMPROC_TEST_MSG] = {
581 		.pc_func = nlm4svc_proc_test_msg,
582 		.pc_decode = nlm4svc_decode_testargs,
583 		.pc_encode = nlm4svc_encode_void,
584 		.pc_argsize = sizeof(struct nlm_args),
585 		.pc_argzero = sizeof(struct nlm_args),
586 		.pc_ressize = sizeof(struct nlm_void),
587 		.pc_xdrressize = St,
588 		.pc_name = "TEST_MSG",
589 	},
590 	[NLMPROC_LOCK_MSG] = {
591 		.pc_func = nlm4svc_proc_lock_msg,
592 		.pc_decode = nlm4svc_decode_lockargs,
593 		.pc_encode = nlm4svc_encode_void,
594 		.pc_argsize = sizeof(struct nlm_args),
595 		.pc_argzero = sizeof(struct nlm_args),
596 		.pc_ressize = sizeof(struct nlm_void),
597 		.pc_xdrressize = St,
598 		.pc_name = "LOCK_MSG",
599 	},
600 	[NLMPROC_CANCEL_MSG] = {
601 		.pc_func = nlm4svc_proc_cancel_msg,
602 		.pc_decode = nlm4svc_decode_cancargs,
603 		.pc_encode = nlm4svc_encode_void,
604 		.pc_argsize = sizeof(struct nlm_args),
605 		.pc_argzero = sizeof(struct nlm_args),
606 		.pc_ressize = sizeof(struct nlm_void),
607 		.pc_xdrressize = St,
608 		.pc_name = "CANCEL_MSG",
609 	},
610 	[NLMPROC_UNLOCK_MSG] = {
611 		.pc_func = nlm4svc_proc_unlock_msg,
612 		.pc_decode = nlm4svc_decode_unlockargs,
613 		.pc_encode = nlm4svc_encode_void,
614 		.pc_argsize = sizeof(struct nlm_args),
615 		.pc_argzero = sizeof(struct nlm_args),
616 		.pc_ressize = sizeof(struct nlm_void),
617 		.pc_xdrressize = St,
618 		.pc_name = "UNLOCK_MSG",
619 	},
620 	[NLMPROC_GRANTED_MSG] = {
621 		.pc_func = nlm4svc_proc_granted_msg,
622 		.pc_decode = nlm4svc_decode_testargs,
623 		.pc_encode = nlm4svc_encode_void,
624 		.pc_argsize = sizeof(struct nlm_args),
625 		.pc_argzero = sizeof(struct nlm_args),
626 		.pc_ressize = sizeof(struct nlm_void),
627 		.pc_xdrressize = St,
628 		.pc_name = "GRANTED_MSG",
629 	},
630 	[NLMPROC_TEST_RES] = {
631 		.pc_func = nlm4svc_proc_null,
632 		.pc_decode = nlm4svc_decode_void,
633 		.pc_encode = nlm4svc_encode_void,
634 		.pc_argsize = sizeof(struct nlm_res),
635 		.pc_argzero = sizeof(struct nlm_res),
636 		.pc_ressize = sizeof(struct nlm_void),
637 		.pc_xdrressize = St,
638 		.pc_name = "TEST_RES",
639 	},
640 	[NLMPROC_LOCK_RES] = {
641 		.pc_func = nlm4svc_proc_null,
642 		.pc_decode = nlm4svc_decode_void,
643 		.pc_encode = nlm4svc_encode_void,
644 		.pc_argsize = sizeof(struct nlm_res),
645 		.pc_argzero = sizeof(struct nlm_res),
646 		.pc_ressize = sizeof(struct nlm_void),
647 		.pc_xdrressize = St,
648 		.pc_name = "LOCK_RES",
649 	},
650 	[NLMPROC_CANCEL_RES] = {
651 		.pc_func = nlm4svc_proc_null,
652 		.pc_decode = nlm4svc_decode_void,
653 		.pc_encode = nlm4svc_encode_void,
654 		.pc_argsize = sizeof(struct nlm_res),
655 		.pc_argzero = sizeof(struct nlm_res),
656 		.pc_ressize = sizeof(struct nlm_void),
657 		.pc_xdrressize = St,
658 		.pc_name = "CANCEL_RES",
659 	},
660 	[NLMPROC_UNLOCK_RES] = {
661 		.pc_func = nlm4svc_proc_null,
662 		.pc_decode = nlm4svc_decode_void,
663 		.pc_encode = nlm4svc_encode_void,
664 		.pc_argsize = sizeof(struct nlm_res),
665 		.pc_argzero = sizeof(struct nlm_res),
666 		.pc_ressize = sizeof(struct nlm_void),
667 		.pc_xdrressize = St,
668 		.pc_name = "UNLOCK_RES",
669 	},
670 	[NLMPROC_GRANTED_RES] = {
671 		.pc_func = nlm4svc_proc_granted_res,
672 		.pc_decode = nlm4svc_decode_res,
673 		.pc_encode = nlm4svc_encode_void,
674 		.pc_argsize = sizeof(struct nlm_res),
675 		.pc_argzero = sizeof(struct nlm_res),
676 		.pc_ressize = sizeof(struct nlm_void),
677 		.pc_xdrressize = St,
678 		.pc_name = "GRANTED_RES",
679 	},
680 	[NLMPROC_NSM_NOTIFY] = {
681 		.pc_func = nlm4svc_proc_sm_notify,
682 		.pc_decode = nlm4svc_decode_reboot,
683 		.pc_encode = nlm4svc_encode_void,
684 		.pc_argsize = sizeof(struct nlm_reboot),
685 		.pc_argzero = sizeof(struct nlm_reboot),
686 		.pc_ressize = sizeof(struct nlm_void),
687 		.pc_xdrressize = St,
688 		.pc_name = "SM_NOTIFY",
689 	},
690 	[17] = {
691 		.pc_func = nlm4svc_proc_unused,
692 		.pc_decode = nlm4svc_decode_void,
693 		.pc_encode = nlm4svc_encode_void,
694 		.pc_argsize = sizeof(struct nlm_void),
695 		.pc_argzero = sizeof(struct nlm_void),
696 		.pc_ressize = sizeof(struct nlm_void),
697 		.pc_xdrressize = 0,
698 		.pc_name = "UNUSED",
699 	},
700 	[18] = {
701 		.pc_func = nlm4svc_proc_unused,
702 		.pc_decode = nlm4svc_decode_void,
703 		.pc_encode = nlm4svc_encode_void,
704 		.pc_argsize = sizeof(struct nlm_void),
705 		.pc_argzero = sizeof(struct nlm_void),
706 		.pc_ressize = sizeof(struct nlm_void),
707 		.pc_xdrressize = 0,
708 		.pc_name = "UNUSED",
709 	},
710 	[19] = {
711 		.pc_func = nlm4svc_proc_unused,
712 		.pc_decode = nlm4svc_decode_void,
713 		.pc_encode = nlm4svc_encode_void,
714 		.pc_argsize = sizeof(struct nlm_void),
715 		.pc_argzero = sizeof(struct nlm_void),
716 		.pc_ressize = sizeof(struct nlm_void),
717 		.pc_xdrressize = 0,
718 		.pc_name = "UNUSED",
719 	},
720 	[NLMPROC_SHARE] = {
721 		.pc_func = nlm4svc_proc_share,
722 		.pc_decode = nlm4svc_decode_shareargs,
723 		.pc_encode = nlm4svc_encode_shareres,
724 		.pc_argsize = sizeof(struct nlm_args),
725 		.pc_argzero = sizeof(struct nlm_args),
726 		.pc_ressize = sizeof(struct nlm_res),
727 		.pc_xdrressize = Ck+St+1,
728 		.pc_name = "SHARE",
729 	},
730 	[NLMPROC_UNSHARE] = {
731 		.pc_func = nlm4svc_proc_unshare,
732 		.pc_decode = nlm4svc_decode_shareargs,
733 		.pc_encode = nlm4svc_encode_shareres,
734 		.pc_argsize = sizeof(struct nlm_args),
735 		.pc_argzero = sizeof(struct nlm_args),
736 		.pc_ressize = sizeof(struct nlm_res),
737 		.pc_xdrressize = Ck+St+1,
738 		.pc_name = "UNSHARE",
739 	},
740 	[NLMPROC_NM_LOCK] = {
741 		.pc_func = nlm4svc_proc_nm_lock,
742 		.pc_decode = nlm4svc_decode_lockargs,
743 		.pc_encode = nlm4svc_encode_res,
744 		.pc_argsize = sizeof(struct nlm_args),
745 		.pc_argzero = sizeof(struct nlm_args),
746 		.pc_ressize = sizeof(struct nlm_res),
747 		.pc_xdrressize = Ck+St,
748 		.pc_name = "NM_LOCK",
749 	},
750 	[NLMPROC_FREE_ALL] = {
751 		.pc_func = nlm4svc_proc_free_all,
752 		.pc_decode = nlm4svc_decode_notify,
753 		.pc_encode = nlm4svc_encode_void,
754 		.pc_argsize = sizeof(struct nlm_args),
755 		.pc_argzero = sizeof(struct nlm_args),
756 		.pc_ressize = sizeof(struct nlm_void),
757 		.pc_xdrressize = St,
758 		.pc_name = "FREE_ALL",
759 	},
760 };
761