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 */
22static __be32
23nlm4svc_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.c.flc_flags = FL_POSIX;
56		lock->fl.c.flc_file  = file->f_file[mode];
57		lock->fl.c.flc_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.c.flc_owner) {
65			/* lockowner allocation has failed */
66			nlmsvc_release_host(host);
67			return nlm_lck_denied_nolocks;
68		}
69	}
70
71	return 0;
72
73no_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 */
83static __be32
84nlm4svc_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 */
93static __be32
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.c.flc_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
123static __be32
124nlm4svc_proc_test(struct svc_rqst *rqstp)
125{
126	return __nlm4svc_proc_test(rqstp, rqstp->rq_resp);
127}
128
129static __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#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
172static __be32
173nlm4svc_proc_lock(struct svc_rqst *rqstp)
174{
175	return __nlm4svc_proc_lock(rqstp, rqstp->rq_resp);
176}
177
178static __be32
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
209static __be32
210nlm4svc_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 */
218static __be32
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
249static __be32
250nlm4svc_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 */
259static __be32
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
272static __be32
273nlm4svc_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 */
281static void nlm4svc_callback_exit(struct rpc_task *task, void *data)
282{
283}
284
285static void nlm4svc_callback_release(void *data)
286{
287	nlmsvc_release_call(data);
288}
289
290static 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 */
300static __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
331static __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
337static __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
343static __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
349static __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
355static __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 */
364static __be32
365nlm4svc_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 */
399static __be32
400nlm4svc_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 */
434static __be32
435nlm4svc_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 */
448static __be32
449nlm4svc_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 */
466static __be32
467nlm4svc_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 */
487static __be32
488nlm4svc_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
501static __be32
502nlm4svc_proc_unused(struct svc_rqst *rqstp)
503{
504	return rpc_proc_unavail;
505}
506
507
508/*
509 * NLM Server procedures.
510 */
511
512struct 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
519const 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