xref: /linux/fs/lockd/svc4proc.c (revision 6a069876eb1402478900ee0eb7d7fe276bb1f4e3)
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
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 		lock->fl.c.flc_flags = FL_POSIX;
50 
51 		error = nlm_lookup_file(rqstp, &file, lock);
52 		if (error)
53 			goto no_locks;
54 		*filp = file;
55 
56 		/* Set up the missing parts of the file_lock structure */
57 		lock->fl.c.flc_file = file->f_file[mode];
58 		lock->fl.c.flc_pid = current->tgid;
59 		lock->fl.fl_start = (loff_t)lock->lock_start;
60 		lock->fl.fl_end = lock->lock_len ?
61 				   (loff_t)(lock->lock_start + lock->lock_len - 1) :
62 				   OFFSET_MAX;
63 		lock->fl.fl_lmops = &nlmsvc_lock_operations;
64 		nlmsvc_locks_init_private(&lock->fl, host, (pid_t)lock->svid);
65 		if (!lock->fl.c.flc_owner) {
66 			/* lockowner allocation has failed */
67 			nlmsvc_release_host(host);
68 			return nlm_lck_denied_nolocks;
69 		}
70 	}
71 
72 	return 0;
73 
74 no_locks:
75 	nlmsvc_release_host(host);
76  	if (error)
77 		return error;
78 	return nlm_lck_denied_nolocks;
79 }
80 
81 /*
82  * NULL: Test for presence of service
83  */
84 static __be32
85 nlm4svc_proc_null(struct svc_rqst *rqstp)
86 {
87 	dprintk("lockd: NULL          called\n");
88 	return rpc_success;
89 }
90 
91 /*
92  * TEST: Check for conflicting lock
93  */
94 static __be32
95 __nlm4svc_proc_test(struct svc_rqst *rqstp, struct nlm_res *resp)
96 {
97 	struct nlm_args *argp = rqstp->rq_argp;
98 	struct nlm_host	*host;
99 	struct nlm_file	*file;
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 	/* Now check for conflicting locks */
110 	resp->status = nlmsvc_testlock(rqstp, file, host, &argp->lock,
111 				       &resp->lock);
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_release_lockowner(&argp->lock);
118 	nlmsvc_release_host(host);
119 	nlm_release_file(file);
120 	return rc;
121 }
122 
123 static __be32
124 nlm4svc_proc_test(struct svc_rqst *rqstp)
125 {
126 	return __nlm4svc_proc_test(rqstp, rqstp->rq_resp);
127 }
128 
129 static __be32
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 	/* Now try to lock the file */
146 	resp->status = nlmsvc_lock(rqstp, file, host, &argp->lock,
147 					argp->block, &argp->cookie,
148 					argp->reclaim);
149 	if (resp->status == nlm_drop_reply)
150 		rc = rpc_drop_reply;
151 	else
152 		dprintk("lockd: LOCK         status %d\n", ntohl(resp->status));
153 
154 	nlmsvc_release_lockowner(&argp->lock);
155 	nlmsvc_release_host(host);
156 	nlm_release_file(file);
157 	return rc;
158 }
159 
160 static __be32
161 nlm4svc_proc_lock(struct svc_rqst *rqstp)
162 {
163 	return __nlm4svc_proc_lock(rqstp, rqstp->rq_resp);
164 }
165 
166 static __be32
167 __nlm4svc_proc_cancel(struct svc_rqst *rqstp, struct nlm_res *resp)
168 {
169 	struct nlm_args *argp = rqstp->rq_argp;
170 	struct nlm_host	*host;
171 	struct nlm_file	*file;
172 
173 	dprintk("lockd: CANCEL        called\n");
174 
175 	resp->cookie = argp->cookie;
176 
177 	/* Don't accept requests during grace period */
178 	if (locks_in_grace(SVC_NET(rqstp))) {
179 		resp->status = nlm_lck_denied_grace_period;
180 		return rpc_success;
181 	}
182 
183 	/* Obtain client and file */
184 	if ((resp->status = nlm4svc_retrieve_args(rqstp, argp, &host, &file)))
185 		return resp->status == nlm_drop_reply ? rpc_drop_reply :rpc_success;
186 
187 	/* Try to cancel request. */
188 	resp->status = nlmsvc_cancel_blocked(SVC_NET(rqstp), file, &argp->lock);
189 
190 	dprintk("lockd: CANCEL        status %d\n", ntohl(resp->status));
191 	nlmsvc_release_lockowner(&argp->lock);
192 	nlmsvc_release_host(host);
193 	nlm_release_file(file);
194 	return rpc_success;
195 }
196 
197 static __be32
198 nlm4svc_proc_cancel(struct svc_rqst *rqstp)
199 {
200 	return __nlm4svc_proc_cancel(rqstp, rqstp->rq_resp);
201 }
202 
203 /*
204  * UNLOCK: release a lock
205  */
206 static __be32
207 __nlm4svc_proc_unlock(struct svc_rqst *rqstp, struct nlm_res *resp)
208 {
209 	struct nlm_args *argp = rqstp->rq_argp;
210 	struct nlm_host	*host;
211 	struct nlm_file	*file;
212 
213 	dprintk("lockd: UNLOCK        called\n");
214 
215 	resp->cookie = argp->cookie;
216 
217 	/* Don't accept new lock requests during grace period */
218 	if (locks_in_grace(SVC_NET(rqstp))) {
219 		resp->status = nlm_lck_denied_grace_period;
220 		return rpc_success;
221 	}
222 
223 	/* Obtain client and file */
224 	if ((resp->status = nlm4svc_retrieve_args(rqstp, argp, &host, &file)))
225 		return resp->status == nlm_drop_reply ? rpc_drop_reply :rpc_success;
226 
227 	/* Now try to remove the lock */
228 	resp->status = nlmsvc_unlock(SVC_NET(rqstp), file, &argp->lock);
229 
230 	dprintk("lockd: UNLOCK        status %d\n", ntohl(resp->status));
231 	nlmsvc_release_lockowner(&argp->lock);
232 	nlmsvc_release_host(host);
233 	nlm_release_file(file);
234 	return rpc_success;
235 }
236 
237 static __be32
238 nlm4svc_proc_unlock(struct svc_rqst *rqstp)
239 {
240 	return __nlm4svc_proc_unlock(rqstp, rqstp->rq_resp);
241 }
242 
243 /*
244  * GRANTED: A server calls us to tell that a process' lock request
245  * was granted
246  */
247 static __be32
248 __nlm4svc_proc_granted(struct svc_rqst *rqstp, struct nlm_res *resp)
249 {
250 	struct nlm_args *argp = rqstp->rq_argp;
251 
252 	resp->cookie = argp->cookie;
253 
254 	dprintk("lockd: GRANTED       called\n");
255 	resp->status = nlmclnt_grant(svc_addr(rqstp), &argp->lock);
256 	dprintk("lockd: GRANTED       status %d\n", ntohl(resp->status));
257 	return rpc_success;
258 }
259 
260 static __be32
261 nlm4svc_proc_granted(struct svc_rqst *rqstp)
262 {
263 	return __nlm4svc_proc_granted(rqstp, rqstp->rq_resp);
264 }
265 
266 /*
267  * This is the generic lockd callback for async RPC calls
268  */
269 static void nlm4svc_callback_exit(struct rpc_task *task, void *data)
270 {
271 }
272 
273 static void nlm4svc_callback_release(void *data)
274 {
275 	nlmsvc_release_call(data);
276 }
277 
278 static const struct rpc_call_ops nlm4svc_callback_ops = {
279 	.rpc_call_done = nlm4svc_callback_exit,
280 	.rpc_release = nlm4svc_callback_release,
281 };
282 
283 /*
284  * `Async' versions of the above service routines. They aren't really,
285  * because we send the callback before the reply proper. I hope this
286  * doesn't break any clients.
287  */
288 static __be32 nlm4svc_callback(struct svc_rqst *rqstp, u32 proc,
289 		__be32 (*func)(struct svc_rqst *,  struct nlm_res *))
290 {
291 	struct nlm_args *argp = rqstp->rq_argp;
292 	struct nlm_host	*host;
293 	struct nlm_rqst	*call;
294 	__be32 stat;
295 
296 	host = nlmsvc_lookup_host(rqstp,
297 				  argp->lock.caller,
298 				  argp->lock.len);
299 	if (host == NULL)
300 		return rpc_system_err;
301 
302 	call = nlm_alloc_call(host);
303 	nlmsvc_release_host(host);
304 	if (call == NULL)
305 		return rpc_system_err;
306 
307 	stat = func(rqstp, &call->a_res);
308 	if (stat != 0) {
309 		nlmsvc_release_call(call);
310 		return stat;
311 	}
312 
313 	call->a_flags = RPC_TASK_ASYNC;
314 	if (nlm_async_reply(call, proc, &nlm4svc_callback_ops) < 0)
315 		return rpc_system_err;
316 	return rpc_success;
317 }
318 
319 static __be32 nlm4svc_proc_test_msg(struct svc_rqst *rqstp)
320 {
321 	dprintk("lockd: TEST_MSG      called\n");
322 	return nlm4svc_callback(rqstp, NLMPROC_TEST_RES, __nlm4svc_proc_test);
323 }
324 
325 static __be32 nlm4svc_proc_lock_msg(struct svc_rqst *rqstp)
326 {
327 	dprintk("lockd: LOCK_MSG      called\n");
328 	return nlm4svc_callback(rqstp, NLMPROC_LOCK_RES, __nlm4svc_proc_lock);
329 }
330 
331 static __be32 nlm4svc_proc_cancel_msg(struct svc_rqst *rqstp)
332 {
333 	dprintk("lockd: CANCEL_MSG    called\n");
334 	return nlm4svc_callback(rqstp, NLMPROC_CANCEL_RES, __nlm4svc_proc_cancel);
335 }
336 
337 static __be32 nlm4svc_proc_unlock_msg(struct svc_rqst *rqstp)
338 {
339 	dprintk("lockd: UNLOCK_MSG    called\n");
340 	return nlm4svc_callback(rqstp, NLMPROC_UNLOCK_RES, __nlm4svc_proc_unlock);
341 }
342 
343 static __be32 nlm4svc_proc_granted_msg(struct svc_rqst *rqstp)
344 {
345 	dprintk("lockd: GRANTED_MSG   called\n");
346 	return nlm4svc_callback(rqstp, NLMPROC_GRANTED_RES, __nlm4svc_proc_granted);
347 }
348 
349 /*
350  * SHARE: create a DOS share or alter existing share.
351  */
352 static __be32
353 nlm4svc_proc_share(struct svc_rqst *rqstp)
354 {
355 	struct nlm_args *argp = rqstp->rq_argp;
356 	struct nlm_res *resp = rqstp->rq_resp;
357 	struct nlm_host	*host;
358 	struct nlm_file	*file;
359 
360 	dprintk("lockd: SHARE         called\n");
361 
362 	resp->cookie = argp->cookie;
363 
364 	/* Don't accept new lock requests during grace period */
365 	if (locks_in_grace(SVC_NET(rqstp)) && !argp->reclaim) {
366 		resp->status = nlm_lck_denied_grace_period;
367 		return rpc_success;
368 	}
369 
370 	/* Obtain client and file */
371 	if ((resp->status = nlm4svc_retrieve_args(rqstp, argp, &host, &file)))
372 		return resp->status == nlm_drop_reply ? rpc_drop_reply :rpc_success;
373 
374 	/* Now try to create the share */
375 	resp->status = nlmsvc_share_file(host, file, argp);
376 
377 	dprintk("lockd: SHARE         status %d\n", ntohl(resp->status));
378 	nlmsvc_release_lockowner(&argp->lock);
379 	nlmsvc_release_host(host);
380 	nlm_release_file(file);
381 	return rpc_success;
382 }
383 
384 /*
385  * UNSHARE: Release a DOS share.
386  */
387 static __be32
388 nlm4svc_proc_unshare(struct svc_rqst *rqstp)
389 {
390 	struct nlm_args *argp = rqstp->rq_argp;
391 	struct nlm_res *resp = rqstp->rq_resp;
392 	struct nlm_host	*host;
393 	struct nlm_file	*file;
394 
395 	dprintk("lockd: UNSHARE       called\n");
396 
397 	resp->cookie = argp->cookie;
398 
399 	/* Don't accept requests during grace period */
400 	if (locks_in_grace(SVC_NET(rqstp))) {
401 		resp->status = nlm_lck_denied_grace_period;
402 		return rpc_success;
403 	}
404 
405 	/* Obtain client and file */
406 	if ((resp->status = nlm4svc_retrieve_args(rqstp, argp, &host, &file)))
407 		return resp->status == nlm_drop_reply ? rpc_drop_reply :rpc_success;
408 
409 	/* Now try to lock the file */
410 	resp->status = nlmsvc_unshare_file(host, file, argp);
411 
412 	dprintk("lockd: UNSHARE       status %d\n", ntohl(resp->status));
413 	nlmsvc_release_lockowner(&argp->lock);
414 	nlmsvc_release_host(host);
415 	nlm_release_file(file);
416 	return rpc_success;
417 }
418 
419 /*
420  * NM_LOCK: Create an unmonitored lock
421  */
422 static __be32
423 nlm4svc_proc_nm_lock(struct svc_rqst *rqstp)
424 {
425 	struct nlm_args *argp = rqstp->rq_argp;
426 
427 	dprintk("lockd: NM_LOCK       called\n");
428 
429 	argp->monitor = 0;		/* just clean the monitor flag */
430 	return nlm4svc_proc_lock(rqstp);
431 }
432 
433 /*
434  * FREE_ALL: Release all locks and shares held by client
435  */
436 static __be32
437 nlm4svc_proc_free_all(struct svc_rqst *rqstp)
438 {
439 	struct nlm_args *argp = rqstp->rq_argp;
440 	struct nlm_host	*host;
441 
442 	/* Obtain client */
443 	if (nlm4svc_retrieve_args(rqstp, argp, &host, NULL))
444 		return rpc_success;
445 
446 	nlmsvc_free_host_resources(host);
447 	nlmsvc_release_host(host);
448 	return rpc_success;
449 }
450 
451 /*
452  * SM_NOTIFY: private callback from statd (not part of official NLM proto)
453  */
454 static __be32
455 nlm4svc_proc_sm_notify(struct svc_rqst *rqstp)
456 {
457 	struct nlm_reboot *argp = rqstp->rq_argp;
458 
459 	dprintk("lockd: SM_NOTIFY     called\n");
460 
461 	if (!nlm_privileged_requester(rqstp)) {
462 		char buf[RPC_MAX_ADDRBUFLEN];
463 		printk(KERN_WARNING "lockd: rejected NSM callback from %s\n",
464 				svc_print_addr(rqstp, buf, sizeof(buf)));
465 		return rpc_system_err;
466 	}
467 
468 	nlm_host_rebooted(SVC_NET(rqstp), argp);
469 	return rpc_success;
470 }
471 
472 /*
473  * client sent a GRANTED_RES, let's remove the associated block
474  */
475 static __be32
476 nlm4svc_proc_granted_res(struct svc_rqst *rqstp)
477 {
478 	struct nlm_res *argp = rqstp->rq_argp;
479 
480         if (!nlmsvc_ops)
481                 return rpc_success;
482 
483         dprintk("lockd: GRANTED_RES   called\n");
484 
485         nlmsvc_grant_reply(&argp->cookie, argp->status);
486         return rpc_success;
487 }
488 
489 static __be32
490 nlm4svc_proc_unused(struct svc_rqst *rqstp)
491 {
492 	return rpc_proc_unavail;
493 }
494 
495 
496 /*
497  * NLM Server procedures.
498  */
499 
500 struct nlm_void			{ int dummy; };
501 
502 #define	Ck	(1+XDR_QUADLEN(NLM_MAXCOOKIELEN))	/* cookie */
503 #define	No	(1+1024/4)				/* netobj */
504 #define	St	1					/* status */
505 #define	Rg	4					/* range (offset + length) */
506 
507 const struct svc_procedure nlmsvc_procedures4[24] = {
508 	[NLMPROC_NULL] = {
509 		.pc_func = nlm4svc_proc_null,
510 		.pc_decode = nlm4svc_decode_void,
511 		.pc_encode = nlm4svc_encode_void,
512 		.pc_argsize = sizeof(struct nlm_void),
513 		.pc_argzero = sizeof(struct nlm_void),
514 		.pc_ressize = sizeof(struct nlm_void),
515 		.pc_xdrressize = St,
516 		.pc_name = "NULL",
517 	},
518 	[NLMPROC_TEST] = {
519 		.pc_func = nlm4svc_proc_test,
520 		.pc_decode = nlm4svc_decode_testargs,
521 		.pc_encode = nlm4svc_encode_testres,
522 		.pc_argsize = sizeof(struct nlm_args),
523 		.pc_argzero = sizeof(struct nlm_args),
524 		.pc_ressize = sizeof(struct nlm_res),
525 		.pc_xdrressize = Ck+St+2+No+Rg,
526 		.pc_name = "TEST",
527 	},
528 	[NLMPROC_LOCK] = {
529 		.pc_func = nlm4svc_proc_lock,
530 		.pc_decode = nlm4svc_decode_lockargs,
531 		.pc_encode = nlm4svc_encode_res,
532 		.pc_argsize = sizeof(struct nlm_args),
533 		.pc_argzero = sizeof(struct nlm_args),
534 		.pc_ressize = sizeof(struct nlm_res),
535 		.pc_xdrressize = Ck+St,
536 		.pc_name = "LOCK",
537 	},
538 	[NLMPROC_CANCEL] = {
539 		.pc_func = nlm4svc_proc_cancel,
540 		.pc_decode = nlm4svc_decode_cancargs,
541 		.pc_encode = nlm4svc_encode_res,
542 		.pc_argsize = sizeof(struct nlm_args),
543 		.pc_argzero = sizeof(struct nlm_args),
544 		.pc_ressize = sizeof(struct nlm_res),
545 		.pc_xdrressize = Ck+St,
546 		.pc_name = "CANCEL",
547 	},
548 	[NLMPROC_UNLOCK] = {
549 		.pc_func = nlm4svc_proc_unlock,
550 		.pc_decode = nlm4svc_decode_unlockargs,
551 		.pc_encode = nlm4svc_encode_res,
552 		.pc_argsize = sizeof(struct nlm_args),
553 		.pc_argzero = sizeof(struct nlm_args),
554 		.pc_ressize = sizeof(struct nlm_res),
555 		.pc_xdrressize = Ck+St,
556 		.pc_name = "UNLOCK",
557 	},
558 	[NLMPROC_GRANTED] = {
559 		.pc_func = nlm4svc_proc_granted,
560 		.pc_decode = nlm4svc_decode_testargs,
561 		.pc_encode = nlm4svc_encode_res,
562 		.pc_argsize = sizeof(struct nlm_args),
563 		.pc_argzero = sizeof(struct nlm_args),
564 		.pc_ressize = sizeof(struct nlm_res),
565 		.pc_xdrressize = Ck+St,
566 		.pc_name = "GRANTED",
567 	},
568 	[NLMPROC_TEST_MSG] = {
569 		.pc_func = nlm4svc_proc_test_msg,
570 		.pc_decode = nlm4svc_decode_testargs,
571 		.pc_encode = nlm4svc_encode_void,
572 		.pc_argsize = sizeof(struct nlm_args),
573 		.pc_argzero = sizeof(struct nlm_args),
574 		.pc_ressize = sizeof(struct nlm_void),
575 		.pc_xdrressize = St,
576 		.pc_name = "TEST_MSG",
577 	},
578 	[NLMPROC_LOCK_MSG] = {
579 		.pc_func = nlm4svc_proc_lock_msg,
580 		.pc_decode = nlm4svc_decode_lockargs,
581 		.pc_encode = nlm4svc_encode_void,
582 		.pc_argsize = sizeof(struct nlm_args),
583 		.pc_argzero = sizeof(struct nlm_args),
584 		.pc_ressize = sizeof(struct nlm_void),
585 		.pc_xdrressize = St,
586 		.pc_name = "LOCK_MSG",
587 	},
588 	[NLMPROC_CANCEL_MSG] = {
589 		.pc_func = nlm4svc_proc_cancel_msg,
590 		.pc_decode = nlm4svc_decode_cancargs,
591 		.pc_encode = nlm4svc_encode_void,
592 		.pc_argsize = sizeof(struct nlm_args),
593 		.pc_argzero = sizeof(struct nlm_args),
594 		.pc_ressize = sizeof(struct nlm_void),
595 		.pc_xdrressize = St,
596 		.pc_name = "CANCEL_MSG",
597 	},
598 	[NLMPROC_UNLOCK_MSG] = {
599 		.pc_func = nlm4svc_proc_unlock_msg,
600 		.pc_decode = nlm4svc_decode_unlockargs,
601 		.pc_encode = nlm4svc_encode_void,
602 		.pc_argsize = sizeof(struct nlm_args),
603 		.pc_argzero = sizeof(struct nlm_args),
604 		.pc_ressize = sizeof(struct nlm_void),
605 		.pc_xdrressize = St,
606 		.pc_name = "UNLOCK_MSG",
607 	},
608 	[NLMPROC_GRANTED_MSG] = {
609 		.pc_func = nlm4svc_proc_granted_msg,
610 		.pc_decode = nlm4svc_decode_testargs,
611 		.pc_encode = nlm4svc_encode_void,
612 		.pc_argsize = sizeof(struct nlm_args),
613 		.pc_argzero = sizeof(struct nlm_args),
614 		.pc_ressize = sizeof(struct nlm_void),
615 		.pc_xdrressize = St,
616 		.pc_name = "GRANTED_MSG",
617 	},
618 	[NLMPROC_TEST_RES] = {
619 		.pc_func = nlm4svc_proc_null,
620 		.pc_decode = nlm4svc_decode_void,
621 		.pc_encode = nlm4svc_encode_void,
622 		.pc_argsize = sizeof(struct nlm_res),
623 		.pc_argzero = sizeof(struct nlm_res),
624 		.pc_ressize = sizeof(struct nlm_void),
625 		.pc_xdrressize = St,
626 		.pc_name = "TEST_RES",
627 	},
628 	[NLMPROC_LOCK_RES] = {
629 		.pc_func = nlm4svc_proc_null,
630 		.pc_decode = nlm4svc_decode_void,
631 		.pc_encode = nlm4svc_encode_void,
632 		.pc_argsize = sizeof(struct nlm_res),
633 		.pc_argzero = sizeof(struct nlm_res),
634 		.pc_ressize = sizeof(struct nlm_void),
635 		.pc_xdrressize = St,
636 		.pc_name = "LOCK_RES",
637 	},
638 	[NLMPROC_CANCEL_RES] = {
639 		.pc_func = nlm4svc_proc_null,
640 		.pc_decode = nlm4svc_decode_void,
641 		.pc_encode = nlm4svc_encode_void,
642 		.pc_argsize = sizeof(struct nlm_res),
643 		.pc_argzero = sizeof(struct nlm_res),
644 		.pc_ressize = sizeof(struct nlm_void),
645 		.pc_xdrressize = St,
646 		.pc_name = "CANCEL_RES",
647 	},
648 	[NLMPROC_UNLOCK_RES] = {
649 		.pc_func = nlm4svc_proc_null,
650 		.pc_decode = nlm4svc_decode_void,
651 		.pc_encode = nlm4svc_encode_void,
652 		.pc_argsize = sizeof(struct nlm_res),
653 		.pc_argzero = sizeof(struct nlm_res),
654 		.pc_ressize = sizeof(struct nlm_void),
655 		.pc_xdrressize = St,
656 		.pc_name = "UNLOCK_RES",
657 	},
658 	[NLMPROC_GRANTED_RES] = {
659 		.pc_func = nlm4svc_proc_granted_res,
660 		.pc_decode = nlm4svc_decode_res,
661 		.pc_encode = nlm4svc_encode_void,
662 		.pc_argsize = sizeof(struct nlm_res),
663 		.pc_argzero = sizeof(struct nlm_res),
664 		.pc_ressize = sizeof(struct nlm_void),
665 		.pc_xdrressize = St,
666 		.pc_name = "GRANTED_RES",
667 	},
668 	[NLMPROC_NSM_NOTIFY] = {
669 		.pc_func = nlm4svc_proc_sm_notify,
670 		.pc_decode = nlm4svc_decode_reboot,
671 		.pc_encode = nlm4svc_encode_void,
672 		.pc_argsize = sizeof(struct nlm_reboot),
673 		.pc_argzero = sizeof(struct nlm_reboot),
674 		.pc_ressize = sizeof(struct nlm_void),
675 		.pc_xdrressize = St,
676 		.pc_name = "SM_NOTIFY",
677 	},
678 	[17] = {
679 		.pc_func = nlm4svc_proc_unused,
680 		.pc_decode = nlm4svc_decode_void,
681 		.pc_encode = nlm4svc_encode_void,
682 		.pc_argsize = sizeof(struct nlm_void),
683 		.pc_argzero = sizeof(struct nlm_void),
684 		.pc_ressize = sizeof(struct nlm_void),
685 		.pc_xdrressize = 0,
686 		.pc_name = "UNUSED",
687 	},
688 	[18] = {
689 		.pc_func = nlm4svc_proc_unused,
690 		.pc_decode = nlm4svc_decode_void,
691 		.pc_encode = nlm4svc_encode_void,
692 		.pc_argsize = sizeof(struct nlm_void),
693 		.pc_argzero = sizeof(struct nlm_void),
694 		.pc_ressize = sizeof(struct nlm_void),
695 		.pc_xdrressize = 0,
696 		.pc_name = "UNUSED",
697 	},
698 	[19] = {
699 		.pc_func = nlm4svc_proc_unused,
700 		.pc_decode = nlm4svc_decode_void,
701 		.pc_encode = nlm4svc_encode_void,
702 		.pc_argsize = sizeof(struct nlm_void),
703 		.pc_argzero = sizeof(struct nlm_void),
704 		.pc_ressize = sizeof(struct nlm_void),
705 		.pc_xdrressize = 0,
706 		.pc_name = "UNUSED",
707 	},
708 	[NLMPROC_SHARE] = {
709 		.pc_func = nlm4svc_proc_share,
710 		.pc_decode = nlm4svc_decode_shareargs,
711 		.pc_encode = nlm4svc_encode_shareres,
712 		.pc_argsize = sizeof(struct nlm_args),
713 		.pc_argzero = sizeof(struct nlm_args),
714 		.pc_ressize = sizeof(struct nlm_res),
715 		.pc_xdrressize = Ck+St+1,
716 		.pc_name = "SHARE",
717 	},
718 	[NLMPROC_UNSHARE] = {
719 		.pc_func = nlm4svc_proc_unshare,
720 		.pc_decode = nlm4svc_decode_shareargs,
721 		.pc_encode = nlm4svc_encode_shareres,
722 		.pc_argsize = sizeof(struct nlm_args),
723 		.pc_argzero = sizeof(struct nlm_args),
724 		.pc_ressize = sizeof(struct nlm_res),
725 		.pc_xdrressize = Ck+St+1,
726 		.pc_name = "UNSHARE",
727 	},
728 	[NLMPROC_NM_LOCK] = {
729 		.pc_func = nlm4svc_proc_nm_lock,
730 		.pc_decode = nlm4svc_decode_lockargs,
731 		.pc_encode = nlm4svc_encode_res,
732 		.pc_argsize = sizeof(struct nlm_args),
733 		.pc_argzero = sizeof(struct nlm_args),
734 		.pc_ressize = sizeof(struct nlm_res),
735 		.pc_xdrressize = Ck+St,
736 		.pc_name = "NM_LOCK",
737 	},
738 	[NLMPROC_FREE_ALL] = {
739 		.pc_func = nlm4svc_proc_free_all,
740 		.pc_decode = nlm4svc_decode_notify,
741 		.pc_encode = nlm4svc_encode_void,
742 		.pc_argsize = sizeof(struct nlm_args),
743 		.pc_argzero = sizeof(struct nlm_args),
744 		.pc_ressize = sizeof(struct nlm_void),
745 		.pc_xdrressize = St,
746 		.pc_name = "FREE_ALL",
747 	},
748 };
749