xref: /linux/fs/lockd/svcproc.c (revision 79d2e1919a2728ef49d938eb20ebd5903c14dfb0)
1 // SPDX-License-Identifier: GPL-2.0
2 /*
3  * linux/fs/lockd/svcproc.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 #ifdef CONFIG_LOCKD_V4
20 static __be32
21 cast_to_nlm(__be32 status, u32 vers)
22 {
23 	/* Note: status is assumed to be in network byte order !!! */
24 	if (vers != 4){
25 		switch (status) {
26 		case nlm_granted:
27 		case nlm_lck_denied:
28 		case nlm_lck_denied_nolocks:
29 		case nlm_lck_blocked:
30 		case nlm_lck_denied_grace_period:
31 		case nlm_drop_reply:
32 			break;
33 		case nlm4_deadlock:
34 			status = nlm_lck_denied;
35 			break;
36 		default:
37 			status = nlm_lck_denied_nolocks;
38 		}
39 	}
40 
41 	return (status);
42 }
43 #define	cast_status(status) (cast_to_nlm(status, rqstp->rq_vers))
44 #else
45 #define cast_status(status) (status)
46 #endif
47 
48 /*
49  * Obtain client and file from arguments
50  */
51 static __be32
52 nlmsvc_retrieve_args(struct svc_rqst *rqstp, struct nlm_args *argp,
53 			struct nlm_host **hostp, struct nlm_file **filp)
54 {
55 	struct nlm_host		*host = NULL;
56 	struct nlm_file		*file = NULL;
57 	struct nlm_lock		*lock = &argp->lock;
58 	int			mode;
59 	__be32			error = 0;
60 
61 	/* nfsd callbacks must have been installed for this procedure */
62 	if (!nlmsvc_ops)
63 		return nlm_lck_denied_nolocks;
64 
65 	/* Obtain host handle */
66 	if (!(host = nlmsvc_lookup_host(rqstp, lock->caller, lock->len))
67 	 || (argp->monitor && nsm_monitor(host) < 0))
68 		goto no_locks;
69 	*hostp = host;
70 
71 	/* Obtain file pointer. Not used by FREE_ALL call. */
72 	if (filp != NULL) {
73 		error = cast_status(nlm_lookup_file(rqstp, &file, lock));
74 		if (error != 0)
75 			goto no_locks;
76 		*filp = file;
77 
78 		/* Set up the missing parts of the file_lock structure */
79 		mode = lock_to_openmode(&lock->fl);
80 		lock->fl.c.flc_flags = FL_POSIX;
81 		lock->fl.c.flc_file  = file->f_file[mode];
82 		lock->fl.c.flc_pid = current->tgid;
83 		lock->fl.fl_lmops = &nlmsvc_lock_operations;
84 		nlmsvc_locks_init_private(&lock->fl, host, (pid_t)lock->svid);
85 		if (!lock->fl.c.flc_owner) {
86 			/* lockowner allocation has failed */
87 			nlmsvc_release_host(host);
88 			return nlm_lck_denied_nolocks;
89 		}
90 	}
91 
92 	return 0;
93 
94 no_locks:
95 	nlmsvc_release_host(host);
96 	if (error)
97 		return error;
98 	return nlm_lck_denied_nolocks;
99 }
100 
101 /*
102  * NULL: Test for presence of service
103  */
104 static __be32
105 nlmsvc_proc_null(struct svc_rqst *rqstp)
106 {
107 	dprintk("lockd: NULL          called\n");
108 	return rpc_success;
109 }
110 
111 /*
112  * TEST: Check for conflicting lock
113  */
114 static __be32
115 __nlmsvc_proc_test(struct svc_rqst *rqstp, struct nlm_res *resp)
116 {
117 	struct nlm_args *argp = rqstp->rq_argp;
118 	struct nlm_host	*host;
119 	struct nlm_file	*file;
120 	struct nlm_lockowner *test_owner;
121 	__be32 rc = rpc_success;
122 
123 	dprintk("lockd: TEST          called\n");
124 	resp->cookie = argp->cookie;
125 
126 	/* Obtain client and file */
127 	if ((resp->status = nlmsvc_retrieve_args(rqstp, argp, &host, &file)))
128 		return resp->status == nlm_drop_reply ? rpc_drop_reply :rpc_success;
129 
130 	test_owner = argp->lock.fl.c.flc_owner;
131 
132 	/* Now check for conflicting locks */
133 	resp->status = cast_status(nlmsvc_testlock(rqstp, file, host,
134 						   &argp->lock, &resp->lock));
135 	if (resp->status == nlm_drop_reply)
136 		rc = rpc_drop_reply;
137 	else
138 		dprintk("lockd: TEST          status %d vers %d\n",
139 			ntohl(resp->status), rqstp->rq_vers);
140 
141 	nlmsvc_put_lockowner(test_owner);
142 	nlmsvc_release_host(host);
143 	nlm_release_file(file);
144 	return rc;
145 }
146 
147 static __be32
148 nlmsvc_proc_test(struct svc_rqst *rqstp)
149 {
150 	return __nlmsvc_proc_test(rqstp, rqstp->rq_resp);
151 }
152 
153 static __be32
154 __nlmsvc_proc_lock(struct svc_rqst *rqstp, struct nlm_res *resp)
155 {
156 	struct nlm_args *argp = rqstp->rq_argp;
157 	struct nlm_host	*host;
158 	struct nlm_file	*file;
159 	__be32 rc = rpc_success;
160 
161 	dprintk("lockd: LOCK          called\n");
162 
163 	resp->cookie = argp->cookie;
164 
165 	/* Obtain client and file */
166 	if ((resp->status = nlmsvc_retrieve_args(rqstp, argp, &host, &file)))
167 		return resp->status == nlm_drop_reply ? rpc_drop_reply :rpc_success;
168 
169 	/* Now try to lock the file */
170 	resp->status = cast_status(nlmsvc_lock(rqstp, file, host, &argp->lock,
171 					       argp->block, &argp->cookie,
172 					       argp->reclaim));
173 	if (resp->status == nlm_drop_reply)
174 		rc = rpc_drop_reply;
175 	else
176 		dprintk("lockd: LOCK         status %d\n", ntohl(resp->status));
177 
178 	nlmsvc_release_lockowner(&argp->lock);
179 	nlmsvc_release_host(host);
180 	nlm_release_file(file);
181 	return rc;
182 }
183 
184 static __be32
185 nlmsvc_proc_lock(struct svc_rqst *rqstp)
186 {
187 	return __nlmsvc_proc_lock(rqstp, rqstp->rq_resp);
188 }
189 
190 static __be32
191 __nlmsvc_proc_cancel(struct svc_rqst *rqstp, struct nlm_res *resp)
192 {
193 	struct nlm_args *argp = rqstp->rq_argp;
194 	struct nlm_host	*host;
195 	struct nlm_file	*file;
196 	struct net *net = SVC_NET(rqstp);
197 
198 	dprintk("lockd: CANCEL        called\n");
199 
200 	resp->cookie = argp->cookie;
201 
202 	/* Don't accept requests during grace period */
203 	if (locks_in_grace(net)) {
204 		resp->status = nlm_lck_denied_grace_period;
205 		return rpc_success;
206 	}
207 
208 	/* Obtain client and file */
209 	if ((resp->status = nlmsvc_retrieve_args(rqstp, argp, &host, &file)))
210 		return resp->status == nlm_drop_reply ? rpc_drop_reply :rpc_success;
211 
212 	/* Try to cancel request. */
213 	resp->status = cast_status(nlmsvc_cancel_blocked(net, file, &argp->lock));
214 
215 	dprintk("lockd: CANCEL        status %d\n", ntohl(resp->status));
216 	nlmsvc_release_lockowner(&argp->lock);
217 	nlmsvc_release_host(host);
218 	nlm_release_file(file);
219 	return rpc_success;
220 }
221 
222 static __be32
223 nlmsvc_proc_cancel(struct svc_rqst *rqstp)
224 {
225 	return __nlmsvc_proc_cancel(rqstp, rqstp->rq_resp);
226 }
227 
228 /*
229  * UNLOCK: release a lock
230  */
231 static __be32
232 __nlmsvc_proc_unlock(struct svc_rqst *rqstp, struct nlm_res *resp)
233 {
234 	struct nlm_args *argp = rqstp->rq_argp;
235 	struct nlm_host	*host;
236 	struct nlm_file	*file;
237 	struct net *net = SVC_NET(rqstp);
238 
239 	dprintk("lockd: UNLOCK        called\n");
240 
241 	resp->cookie = argp->cookie;
242 
243 	/* Don't accept new lock requests during grace period */
244 	if (locks_in_grace(net)) {
245 		resp->status = nlm_lck_denied_grace_period;
246 		return rpc_success;
247 	}
248 
249 	/* Obtain client and file */
250 	if ((resp->status = nlmsvc_retrieve_args(rqstp, argp, &host, &file)))
251 		return resp->status == nlm_drop_reply ? rpc_drop_reply :rpc_success;
252 
253 	/* Now try to remove the lock */
254 	resp->status = cast_status(nlmsvc_unlock(net, file, &argp->lock));
255 
256 	dprintk("lockd: UNLOCK        status %d\n", ntohl(resp->status));
257 	nlmsvc_release_lockowner(&argp->lock);
258 	nlmsvc_release_host(host);
259 	nlm_release_file(file);
260 	return rpc_success;
261 }
262 
263 static __be32
264 nlmsvc_proc_unlock(struct svc_rqst *rqstp)
265 {
266 	return __nlmsvc_proc_unlock(rqstp, rqstp->rq_resp);
267 }
268 
269 /*
270  * GRANTED: A server calls us to tell that a process' lock request
271  * was granted
272  */
273 static __be32
274 __nlmsvc_proc_granted(struct svc_rqst *rqstp, struct nlm_res *resp)
275 {
276 	struct nlm_args *argp = rqstp->rq_argp;
277 
278 	resp->cookie = argp->cookie;
279 
280 	dprintk("lockd: GRANTED       called\n");
281 	resp->status = nlmclnt_grant(svc_addr(rqstp), &argp->lock);
282 	dprintk("lockd: GRANTED       status %d\n", ntohl(resp->status));
283 	return rpc_success;
284 }
285 
286 static __be32
287 nlmsvc_proc_granted(struct svc_rqst *rqstp)
288 {
289 	return __nlmsvc_proc_granted(rqstp, rqstp->rq_resp);
290 }
291 
292 /*
293  * This is the generic lockd callback for async RPC calls
294  */
295 static void nlmsvc_callback_exit(struct rpc_task *task, void *data)
296 {
297 }
298 
299 void nlmsvc_release_call(struct nlm_rqst *call)
300 {
301 	if (!refcount_dec_and_test(&call->a_count))
302 		return;
303 	nlmsvc_release_host(call->a_host);
304 	kfree(call);
305 }
306 
307 static void nlmsvc_callback_release(void *data)
308 {
309 	nlmsvc_release_call(data);
310 }
311 
312 static const struct rpc_call_ops nlmsvc_callback_ops = {
313 	.rpc_call_done = nlmsvc_callback_exit,
314 	.rpc_release = nlmsvc_callback_release,
315 };
316 
317 /*
318  * `Async' versions of the above service routines. They aren't really,
319  * because we send the callback before the reply proper. I hope this
320  * doesn't break any clients.
321  */
322 static __be32 nlmsvc_callback(struct svc_rqst *rqstp, u32 proc,
323 		__be32 (*func)(struct svc_rqst *, struct nlm_res *))
324 {
325 	struct nlm_args *argp = rqstp->rq_argp;
326 	struct nlm_host	*host;
327 	struct nlm_rqst	*call;
328 	__be32 stat;
329 
330 	host = nlmsvc_lookup_host(rqstp,
331 				  argp->lock.caller,
332 				  argp->lock.len);
333 	if (host == NULL)
334 		return rpc_system_err;
335 
336 	call = nlm_alloc_call(host);
337 	nlmsvc_release_host(host);
338 	if (call == NULL)
339 		return rpc_system_err;
340 
341 	stat = func(rqstp, &call->a_res);
342 	if (stat != 0) {
343 		nlmsvc_release_call(call);
344 		return stat;
345 	}
346 
347 	call->a_flags = RPC_TASK_ASYNC;
348 	if (nlm_async_reply(call, proc, &nlmsvc_callback_ops) < 0)
349 		return rpc_system_err;
350 	return rpc_success;
351 }
352 
353 static __be32 nlmsvc_proc_test_msg(struct svc_rqst *rqstp)
354 {
355 	dprintk("lockd: TEST_MSG      called\n");
356 	return nlmsvc_callback(rqstp, NLMPROC_TEST_RES, __nlmsvc_proc_test);
357 }
358 
359 static __be32 nlmsvc_proc_lock_msg(struct svc_rqst *rqstp)
360 {
361 	dprintk("lockd: LOCK_MSG      called\n");
362 	return nlmsvc_callback(rqstp, NLMPROC_LOCK_RES, __nlmsvc_proc_lock);
363 }
364 
365 static __be32 nlmsvc_proc_cancel_msg(struct svc_rqst *rqstp)
366 {
367 	dprintk("lockd: CANCEL_MSG    called\n");
368 	return nlmsvc_callback(rqstp, NLMPROC_CANCEL_RES, __nlmsvc_proc_cancel);
369 }
370 
371 static __be32
372 nlmsvc_proc_unlock_msg(struct svc_rqst *rqstp)
373 {
374 	dprintk("lockd: UNLOCK_MSG    called\n");
375 	return nlmsvc_callback(rqstp, NLMPROC_UNLOCK_RES, __nlmsvc_proc_unlock);
376 }
377 
378 static __be32
379 nlmsvc_proc_granted_msg(struct svc_rqst *rqstp)
380 {
381 	dprintk("lockd: GRANTED_MSG   called\n");
382 	return nlmsvc_callback(rqstp, NLMPROC_GRANTED_RES, __nlmsvc_proc_granted);
383 }
384 
385 /*
386  * SHARE: create a DOS share or alter existing share.
387  */
388 static __be32
389 nlmsvc_proc_share(struct svc_rqst *rqstp)
390 {
391 	struct nlm_args *argp = rqstp->rq_argp;
392 	struct nlm_res *resp = rqstp->rq_resp;
393 	struct nlm_host	*host;
394 	struct nlm_file	*file;
395 
396 	dprintk("lockd: SHARE         called\n");
397 
398 	resp->cookie = argp->cookie;
399 
400 	/* Don't accept new lock requests during grace period */
401 	if (locks_in_grace(SVC_NET(rqstp)) && !argp->reclaim) {
402 		resp->status = nlm_lck_denied_grace_period;
403 		return rpc_success;
404 	}
405 
406 	/* Obtain client and file */
407 	if ((resp->status = nlmsvc_retrieve_args(rqstp, argp, &host, &file)))
408 		return resp->status == nlm_drop_reply ? rpc_drop_reply :rpc_success;
409 
410 	/* Now try to create the share */
411 	resp->status = cast_status(nlmsvc_share_file(host, file, argp));
412 
413 	dprintk("lockd: SHARE         status %d\n", ntohl(resp->status));
414 	nlmsvc_release_lockowner(&argp->lock);
415 	nlmsvc_release_host(host);
416 	nlm_release_file(file);
417 	return rpc_success;
418 }
419 
420 /*
421  * UNSHARE: Release a DOS share.
422  */
423 static __be32
424 nlmsvc_proc_unshare(struct svc_rqst *rqstp)
425 {
426 	struct nlm_args *argp = rqstp->rq_argp;
427 	struct nlm_res *resp = rqstp->rq_resp;
428 	struct nlm_host	*host;
429 	struct nlm_file	*file;
430 
431 	dprintk("lockd: UNSHARE       called\n");
432 
433 	resp->cookie = argp->cookie;
434 
435 	/* Don't accept requests during grace period */
436 	if (locks_in_grace(SVC_NET(rqstp))) {
437 		resp->status = nlm_lck_denied_grace_period;
438 		return rpc_success;
439 	}
440 
441 	/* Obtain client and file */
442 	if ((resp->status = nlmsvc_retrieve_args(rqstp, argp, &host, &file)))
443 		return resp->status == nlm_drop_reply ? rpc_drop_reply :rpc_success;
444 
445 	/* Now try to unshare the file */
446 	resp->status = cast_status(nlmsvc_unshare_file(host, file, argp));
447 
448 	dprintk("lockd: UNSHARE       status %d\n", ntohl(resp->status));
449 	nlmsvc_release_lockowner(&argp->lock);
450 	nlmsvc_release_host(host);
451 	nlm_release_file(file);
452 	return rpc_success;
453 }
454 
455 /*
456  * NM_LOCK: Create an unmonitored lock
457  */
458 static __be32
459 nlmsvc_proc_nm_lock(struct svc_rqst *rqstp)
460 {
461 	struct nlm_args *argp = rqstp->rq_argp;
462 
463 	dprintk("lockd: NM_LOCK       called\n");
464 
465 	argp->monitor = 0;		/* just clean the monitor flag */
466 	return nlmsvc_proc_lock(rqstp);
467 }
468 
469 /*
470  * FREE_ALL: Release all locks and shares held by client
471  */
472 static __be32
473 nlmsvc_proc_free_all(struct svc_rqst *rqstp)
474 {
475 	struct nlm_args *argp = rqstp->rq_argp;
476 	struct nlm_host	*host;
477 
478 	/* Obtain client */
479 	if (nlmsvc_retrieve_args(rqstp, argp, &host, NULL))
480 		return rpc_success;
481 
482 	nlmsvc_free_host_resources(host);
483 	nlmsvc_release_host(host);
484 	return rpc_success;
485 }
486 
487 /*
488  * SM_NOTIFY: private callback from statd (not part of official NLM proto)
489  */
490 static __be32
491 nlmsvc_proc_sm_notify(struct svc_rqst *rqstp)
492 {
493 	struct nlm_reboot *argp = rqstp->rq_argp;
494 
495 	dprintk("lockd: SM_NOTIFY     called\n");
496 
497 	if (!nlm_privileged_requester(rqstp)) {
498 		char buf[RPC_MAX_ADDRBUFLEN];
499 		printk(KERN_WARNING "lockd: rejected NSM callback from %s\n",
500 				svc_print_addr(rqstp, buf, sizeof(buf)));
501 		return rpc_system_err;
502 	}
503 
504 	nlm_host_rebooted(SVC_NET(rqstp), argp);
505 	return rpc_success;
506 }
507 
508 /*
509  * client sent a GRANTED_RES, let's remove the associated block
510  */
511 static __be32
512 nlmsvc_proc_granted_res(struct svc_rqst *rqstp)
513 {
514 	struct nlm_res *argp = rqstp->rq_argp;
515 
516 	if (!nlmsvc_ops)
517 		return rpc_success;
518 
519 	dprintk("lockd: GRANTED_RES   called\n");
520 
521 	nlmsvc_grant_reply(&argp->cookie, argp->status);
522 	return rpc_success;
523 }
524 
525 static __be32
526 nlmsvc_proc_unused(struct svc_rqst *rqstp)
527 {
528 	return rpc_proc_unavail;
529 }
530 
531 /*
532  * NLM Server procedures.
533  */
534 
535 struct nlm_void			{ int dummy; };
536 
537 #define	Ck	(1+XDR_QUADLEN(NLM_MAXCOOKIELEN))	/* cookie */
538 #define	St	1				/* status */
539 #define	No	(1+1024/4)			/* Net Obj */
540 #define	Rg	2				/* range - offset + size */
541 
542 const struct svc_procedure nlmsvc_procedures[24] = {
543 	[NLMPROC_NULL] = {
544 		.pc_func = nlmsvc_proc_null,
545 		.pc_decode = nlmsvc_decode_void,
546 		.pc_encode = nlmsvc_encode_void,
547 		.pc_argsize = sizeof(struct nlm_void),
548 		.pc_argzero = sizeof(struct nlm_void),
549 		.pc_ressize = sizeof(struct nlm_void),
550 		.pc_xdrressize = St,
551 		.pc_name = "NULL",
552 	},
553 	[NLMPROC_TEST] = {
554 		.pc_func = nlmsvc_proc_test,
555 		.pc_decode = nlmsvc_decode_testargs,
556 		.pc_encode = nlmsvc_encode_testres,
557 		.pc_argsize = sizeof(struct nlm_args),
558 		.pc_argzero = sizeof(struct nlm_args),
559 		.pc_ressize = sizeof(struct nlm_res),
560 		.pc_xdrressize = Ck+St+2+No+Rg,
561 		.pc_name = "TEST",
562 	},
563 	[NLMPROC_LOCK] = {
564 		.pc_func = nlmsvc_proc_lock,
565 		.pc_decode = nlmsvc_decode_lockargs,
566 		.pc_encode = nlmsvc_encode_res,
567 		.pc_argsize = sizeof(struct nlm_args),
568 		.pc_argzero = sizeof(struct nlm_args),
569 		.pc_ressize = sizeof(struct nlm_res),
570 		.pc_xdrressize = Ck+St,
571 		.pc_name = "LOCK",
572 	},
573 	[NLMPROC_CANCEL] = {
574 		.pc_func = nlmsvc_proc_cancel,
575 		.pc_decode = nlmsvc_decode_cancargs,
576 		.pc_encode = nlmsvc_encode_res,
577 		.pc_argsize = sizeof(struct nlm_args),
578 		.pc_argzero = sizeof(struct nlm_args),
579 		.pc_ressize = sizeof(struct nlm_res),
580 		.pc_xdrressize = Ck+St,
581 		.pc_name = "CANCEL",
582 	},
583 	[NLMPROC_UNLOCK] = {
584 		.pc_func = nlmsvc_proc_unlock,
585 		.pc_decode = nlmsvc_decode_unlockargs,
586 		.pc_encode = nlmsvc_encode_res,
587 		.pc_argsize = sizeof(struct nlm_args),
588 		.pc_argzero = sizeof(struct nlm_args),
589 		.pc_ressize = sizeof(struct nlm_res),
590 		.pc_xdrressize = Ck+St,
591 		.pc_name = "UNLOCK",
592 	},
593 	[NLMPROC_GRANTED] = {
594 		.pc_func = nlmsvc_proc_granted,
595 		.pc_decode = nlmsvc_decode_testargs,
596 		.pc_encode = nlmsvc_encode_res,
597 		.pc_argsize = sizeof(struct nlm_args),
598 		.pc_argzero = sizeof(struct nlm_args),
599 		.pc_ressize = sizeof(struct nlm_res),
600 		.pc_xdrressize = Ck+St,
601 		.pc_name = "GRANTED",
602 	},
603 	[NLMPROC_TEST_MSG] = {
604 		.pc_func = nlmsvc_proc_test_msg,
605 		.pc_decode = nlmsvc_decode_testargs,
606 		.pc_encode = nlmsvc_encode_void,
607 		.pc_argsize = sizeof(struct nlm_args),
608 		.pc_argzero = sizeof(struct nlm_args),
609 		.pc_ressize = sizeof(struct nlm_void),
610 		.pc_xdrressize = St,
611 		.pc_name = "TEST_MSG",
612 	},
613 	[NLMPROC_LOCK_MSG] = {
614 		.pc_func = nlmsvc_proc_lock_msg,
615 		.pc_decode = nlmsvc_decode_lockargs,
616 		.pc_encode = nlmsvc_encode_void,
617 		.pc_argsize = sizeof(struct nlm_args),
618 		.pc_argzero = sizeof(struct nlm_args),
619 		.pc_ressize = sizeof(struct nlm_void),
620 		.pc_xdrressize = St,
621 		.pc_name = "LOCK_MSG",
622 	},
623 	[NLMPROC_CANCEL_MSG] = {
624 		.pc_func = nlmsvc_proc_cancel_msg,
625 		.pc_decode = nlmsvc_decode_cancargs,
626 		.pc_encode = nlmsvc_encode_void,
627 		.pc_argsize = sizeof(struct nlm_args),
628 		.pc_argzero = sizeof(struct nlm_args),
629 		.pc_ressize = sizeof(struct nlm_void),
630 		.pc_xdrressize = St,
631 		.pc_name = "CANCEL_MSG",
632 	},
633 	[NLMPROC_UNLOCK_MSG] = {
634 		.pc_func = nlmsvc_proc_unlock_msg,
635 		.pc_decode = nlmsvc_decode_unlockargs,
636 		.pc_encode = nlmsvc_encode_void,
637 		.pc_argsize = sizeof(struct nlm_args),
638 		.pc_argzero = sizeof(struct nlm_args),
639 		.pc_ressize = sizeof(struct nlm_void),
640 		.pc_xdrressize = St,
641 		.pc_name = "UNLOCK_MSG",
642 	},
643 	[NLMPROC_GRANTED_MSG] = {
644 		.pc_func = nlmsvc_proc_granted_msg,
645 		.pc_decode = nlmsvc_decode_testargs,
646 		.pc_encode = nlmsvc_encode_void,
647 		.pc_argsize = sizeof(struct nlm_args),
648 		.pc_argzero = sizeof(struct nlm_args),
649 		.pc_ressize = sizeof(struct nlm_void),
650 		.pc_xdrressize = St,
651 		.pc_name = "GRANTED_MSG",
652 	},
653 	[NLMPROC_TEST_RES] = {
654 		.pc_func = nlmsvc_proc_null,
655 		.pc_decode = nlmsvc_decode_void,
656 		.pc_encode = nlmsvc_encode_void,
657 		.pc_argsize = sizeof(struct nlm_res),
658 		.pc_argzero = sizeof(struct nlm_res),
659 		.pc_ressize = sizeof(struct nlm_void),
660 		.pc_xdrressize = St,
661 		.pc_name = "TEST_RES",
662 	},
663 	[NLMPROC_LOCK_RES] = {
664 		.pc_func = nlmsvc_proc_null,
665 		.pc_decode = nlmsvc_decode_void,
666 		.pc_encode = nlmsvc_encode_void,
667 		.pc_argsize = sizeof(struct nlm_res),
668 		.pc_argzero = sizeof(struct nlm_res),
669 		.pc_ressize = sizeof(struct nlm_void),
670 		.pc_xdrressize = St,
671 		.pc_name = "LOCK_RES",
672 	},
673 	[NLMPROC_CANCEL_RES] = {
674 		.pc_func = nlmsvc_proc_null,
675 		.pc_decode = nlmsvc_decode_void,
676 		.pc_encode = nlmsvc_encode_void,
677 		.pc_argsize = sizeof(struct nlm_res),
678 		.pc_argzero = sizeof(struct nlm_res),
679 		.pc_ressize = sizeof(struct nlm_void),
680 		.pc_xdrressize = St,
681 		.pc_name = "CANCEL_RES",
682 	},
683 	[NLMPROC_UNLOCK_RES] = {
684 		.pc_func = nlmsvc_proc_null,
685 		.pc_decode = nlmsvc_decode_void,
686 		.pc_encode = nlmsvc_encode_void,
687 		.pc_argsize = sizeof(struct nlm_res),
688 		.pc_argzero = sizeof(struct nlm_res),
689 		.pc_ressize = sizeof(struct nlm_void),
690 		.pc_xdrressize = St,
691 		.pc_name = "UNLOCK_RES",
692 	},
693 	[NLMPROC_GRANTED_RES] = {
694 		.pc_func = nlmsvc_proc_granted_res,
695 		.pc_decode = nlmsvc_decode_res,
696 		.pc_encode = nlmsvc_encode_void,
697 		.pc_argsize = sizeof(struct nlm_res),
698 		.pc_argzero = sizeof(struct nlm_res),
699 		.pc_ressize = sizeof(struct nlm_void),
700 		.pc_xdrressize = St,
701 		.pc_name = "GRANTED_RES",
702 	},
703 	[NLMPROC_NSM_NOTIFY] = {
704 		.pc_func = nlmsvc_proc_sm_notify,
705 		.pc_decode = nlmsvc_decode_reboot,
706 		.pc_encode = nlmsvc_encode_void,
707 		.pc_argsize = sizeof(struct nlm_reboot),
708 		.pc_argzero = sizeof(struct nlm_reboot),
709 		.pc_ressize = sizeof(struct nlm_void),
710 		.pc_xdrressize = St,
711 		.pc_name = "SM_NOTIFY",
712 	},
713 	[17] = {
714 		.pc_func = nlmsvc_proc_unused,
715 		.pc_decode = nlmsvc_decode_void,
716 		.pc_encode = nlmsvc_encode_void,
717 		.pc_argsize = sizeof(struct nlm_void),
718 		.pc_argzero = sizeof(struct nlm_void),
719 		.pc_ressize = sizeof(struct nlm_void),
720 		.pc_xdrressize = St,
721 		.pc_name = "UNUSED",
722 	},
723 	[18] = {
724 		.pc_func = nlmsvc_proc_unused,
725 		.pc_decode = nlmsvc_decode_void,
726 		.pc_encode = nlmsvc_encode_void,
727 		.pc_argsize = sizeof(struct nlm_void),
728 		.pc_argzero = sizeof(struct nlm_void),
729 		.pc_ressize = sizeof(struct nlm_void),
730 		.pc_xdrressize = St,
731 		.pc_name = "UNUSED",
732 	},
733 	[19] = {
734 		.pc_func = nlmsvc_proc_unused,
735 		.pc_decode = nlmsvc_decode_void,
736 		.pc_encode = nlmsvc_encode_void,
737 		.pc_argsize = sizeof(struct nlm_void),
738 		.pc_argzero = sizeof(struct nlm_void),
739 		.pc_ressize = sizeof(struct nlm_void),
740 		.pc_xdrressize = St,
741 		.pc_name = "UNUSED",
742 	},
743 	[NLMPROC_SHARE] = {
744 		.pc_func = nlmsvc_proc_share,
745 		.pc_decode = nlmsvc_decode_shareargs,
746 		.pc_encode = nlmsvc_encode_shareres,
747 		.pc_argsize = sizeof(struct nlm_args),
748 		.pc_argzero = sizeof(struct nlm_args),
749 		.pc_ressize = sizeof(struct nlm_res),
750 		.pc_xdrressize = Ck+St+1,
751 		.pc_name = "SHARE",
752 	},
753 	[NLMPROC_UNSHARE] = {
754 		.pc_func = nlmsvc_proc_unshare,
755 		.pc_decode = nlmsvc_decode_shareargs,
756 		.pc_encode = nlmsvc_encode_shareres,
757 		.pc_argsize = sizeof(struct nlm_args),
758 		.pc_argzero = sizeof(struct nlm_args),
759 		.pc_ressize = sizeof(struct nlm_res),
760 		.pc_xdrressize = Ck+St+1,
761 		.pc_name = "UNSHARE",
762 	},
763 	[NLMPROC_NM_LOCK] = {
764 		.pc_func = nlmsvc_proc_nm_lock,
765 		.pc_decode = nlmsvc_decode_lockargs,
766 		.pc_encode = nlmsvc_encode_res,
767 		.pc_argsize = sizeof(struct nlm_args),
768 		.pc_argzero = sizeof(struct nlm_args),
769 		.pc_ressize = sizeof(struct nlm_res),
770 		.pc_xdrressize = Ck+St,
771 		.pc_name = "NM_LOCK",
772 	},
773 	[NLMPROC_FREE_ALL] = {
774 		.pc_func = nlmsvc_proc_free_all,
775 		.pc_decode = nlmsvc_decode_notify,
776 		.pc_encode = nlmsvc_encode_void,
777 		.pc_argsize = sizeof(struct nlm_args),
778 		.pc_argzero = sizeof(struct nlm_args),
779 		.pc_ressize = sizeof(struct nlm_void),
780 		.pc_xdrressize = 0,
781 		.pc_name = "FREE_ALL",
782 	},
783 };
784