xref: /openbmc/linux/fs/lockd/svc4proc.c (revision b8b350af)
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 	/* Obtain host handle */
36 	if (!(host = nlmsvc_lookup_host(rqstp, lock->caller, lock->len))
37 	 || (argp->monitor && nsm_monitor(host) < 0))
38 		goto no_locks;
39 	*hostp = host;
40 
41 	/* Obtain file pointer. Not used by FREE_ALL call. */
42 	if (filp != NULL) {
43 		int mode = lock_to_openmode(&lock->fl);
44 
45 		error = nlm_lookup_file(rqstp, &file, lock);
46 		if (error)
47 			goto no_locks;
48 		*filp = file;
49 
50 		/* Set up the missing parts of the file_lock structure */
51 		lock->fl.fl_file  = file->f_file[mode];
52 		lock->fl.fl_pid = current->tgid;
53 		lock->fl.fl_lmops = &nlmsvc_lock_operations;
54 		nlmsvc_locks_init_private(&lock->fl, host, (pid_t)lock->svid);
55 		if (!lock->fl.fl_owner) {
56 			/* lockowner allocation has failed */
57 			nlmsvc_release_host(host);
58 			return nlm_lck_denied_nolocks;
59 		}
60 	}
61 
62 	return 0;
63 
64 no_locks:
65 	nlmsvc_release_host(host);
66  	if (error)
67 		return error;
68 	return nlm_lck_denied_nolocks;
69 }
70 
71 /*
72  * NULL: Test for presence of service
73  */
74 static __be32
75 nlm4svc_proc_null(struct svc_rqst *rqstp)
76 {
77 	dprintk("lockd: NULL          called\n");
78 	return rpc_success;
79 }
80 
81 /*
82  * TEST: Check for conflicting lock
83  */
84 static __be32
85 __nlm4svc_proc_test(struct svc_rqst *rqstp, struct nlm_res *resp)
86 {
87 	struct nlm_args *argp = rqstp->rq_argp;
88 	struct nlm_host	*host;
89 	struct nlm_file	*file;
90 	__be32 rc = rpc_success;
91 
92 	dprintk("lockd: TEST4        called\n");
93 	resp->cookie = argp->cookie;
94 
95 	/* Obtain client and file */
96 	if ((resp->status = nlm4svc_retrieve_args(rqstp, argp, &host, &file)))
97 		return resp->status == nlm_drop_reply ? rpc_drop_reply :rpc_success;
98 
99 	/* Now check for conflicting locks */
100 	resp->status = nlmsvc_testlock(rqstp, file, host, &argp->lock, &resp->lock, &resp->cookie);
101 	if (resp->status == nlm_drop_reply)
102 		rc = rpc_drop_reply;
103 	else
104 		dprintk("lockd: TEST4        status %d\n", ntohl(resp->status));
105 
106 	nlmsvc_release_lockowner(&argp->lock);
107 	nlmsvc_release_host(host);
108 	nlm_release_file(file);
109 	return rc;
110 }
111 
112 static __be32
113 nlm4svc_proc_test(struct svc_rqst *rqstp)
114 {
115 	return __nlm4svc_proc_test(rqstp, rqstp->rq_resp);
116 }
117 
118 static __be32
119 __nlm4svc_proc_lock(struct svc_rqst *rqstp, struct nlm_res *resp)
120 {
121 	struct nlm_args *argp = rqstp->rq_argp;
122 	struct nlm_host	*host;
123 	struct nlm_file	*file;
124 	__be32 rc = rpc_success;
125 
126 	dprintk("lockd: LOCK          called\n");
127 
128 	resp->cookie = argp->cookie;
129 
130 	/* Obtain client and file */
131 	if ((resp->status = nlm4svc_retrieve_args(rqstp, argp, &host, &file)))
132 		return resp->status == nlm_drop_reply ? rpc_drop_reply :rpc_success;
133 
134 #if 0
135 	/* If supplied state doesn't match current state, we assume it's
136 	 * an old request that time-warped somehow. Any error return would
137 	 * do in this case because it's irrelevant anyway.
138 	 *
139 	 * NB: We don't retrieve the remote host's state yet.
140 	 */
141 	if (host->h_nsmstate && host->h_nsmstate != argp->state) {
142 		resp->status = nlm_lck_denied_nolocks;
143 	} else
144 #endif
145 
146 	/* Now try to lock the file */
147 	resp->status = nlmsvc_lock(rqstp, file, host, &argp->lock,
148 					argp->block, &argp->cookie,
149 					argp->reclaim);
150 	if (resp->status == nlm_drop_reply)
151 		rc = rpc_drop_reply;
152 	else
153 		dprintk("lockd: LOCK         status %d\n", ntohl(resp->status));
154 
155 	nlmsvc_release_lockowner(&argp->lock);
156 	nlmsvc_release_host(host);
157 	nlm_release_file(file);
158 	return rc;
159 }
160 
161 static __be32
162 nlm4svc_proc_lock(struct svc_rqst *rqstp)
163 {
164 	return __nlm4svc_proc_lock(rqstp, rqstp->rq_resp);
165 }
166 
167 static __be32
168 __nlm4svc_proc_cancel(struct svc_rqst *rqstp, struct nlm_res *resp)
169 {
170 	struct nlm_args *argp = rqstp->rq_argp;
171 	struct nlm_host	*host;
172 	struct nlm_file	*file;
173 
174 	dprintk("lockd: CANCEL        called\n");
175 
176 	resp->cookie = argp->cookie;
177 
178 	/* Don't accept requests during grace period */
179 	if (locks_in_grace(SVC_NET(rqstp))) {
180 		resp->status = nlm_lck_denied_grace_period;
181 		return rpc_success;
182 	}
183 
184 	/* Obtain client and file */
185 	if ((resp->status = nlm4svc_retrieve_args(rqstp, argp, &host, &file)))
186 		return resp->status == nlm_drop_reply ? rpc_drop_reply :rpc_success;
187 
188 	/* Try to cancel request. */
189 	resp->status = nlmsvc_cancel_blocked(SVC_NET(rqstp), file, &argp->lock);
190 
191 	dprintk("lockd: CANCEL        status %d\n", ntohl(resp->status));
192 	nlmsvc_release_lockowner(&argp->lock);
193 	nlmsvc_release_host(host);
194 	nlm_release_file(file);
195 	return rpc_success;
196 }
197 
198 static __be32
199 nlm4svc_proc_cancel(struct svc_rqst *rqstp)
200 {
201 	return __nlm4svc_proc_cancel(rqstp, rqstp->rq_resp);
202 }
203 
204 /*
205  * UNLOCK: release a lock
206  */
207 static __be32
208 __nlm4svc_proc_unlock(struct svc_rqst *rqstp, struct nlm_res *resp)
209 {
210 	struct nlm_args *argp = rqstp->rq_argp;
211 	struct nlm_host	*host;
212 	struct nlm_file	*file;
213 
214 	dprintk("lockd: UNLOCK        called\n");
215 
216 	resp->cookie = argp->cookie;
217 
218 	/* Don't accept new lock requests during grace period */
219 	if (locks_in_grace(SVC_NET(rqstp))) {
220 		resp->status = nlm_lck_denied_grace_period;
221 		return rpc_success;
222 	}
223 
224 	/* Obtain client and file */
225 	if ((resp->status = nlm4svc_retrieve_args(rqstp, argp, &host, &file)))
226 		return resp->status == nlm_drop_reply ? rpc_drop_reply :rpc_success;
227 
228 	/* Now try to remove the lock */
229 	resp->status = nlmsvc_unlock(SVC_NET(rqstp), file, &argp->lock);
230 
231 	dprintk("lockd: UNLOCK        status %d\n", ntohl(resp->status));
232 	nlmsvc_release_lockowner(&argp->lock);
233 	nlmsvc_release_host(host);
234 	nlm_release_file(file);
235 	return rpc_success;
236 }
237 
238 static __be32
239 nlm4svc_proc_unlock(struct svc_rqst *rqstp)
240 {
241 	return __nlm4svc_proc_unlock(rqstp, rqstp->rq_resp);
242 }
243 
244 /*
245  * GRANTED: A server calls us to tell that a process' lock request
246  * was granted
247  */
248 static __be32
249 __nlm4svc_proc_granted(struct svc_rqst *rqstp, struct nlm_res *resp)
250 {
251 	struct nlm_args *argp = rqstp->rq_argp;
252 
253 	resp->cookie = argp->cookie;
254 
255 	dprintk("lockd: GRANTED       called\n");
256 	resp->status = nlmclnt_grant(svc_addr(rqstp), &argp->lock);
257 	dprintk("lockd: GRANTED       status %d\n", ntohl(resp->status));
258 	return rpc_success;
259 }
260 
261 static __be32
262 nlm4svc_proc_granted(struct svc_rqst *rqstp)
263 {
264 	return __nlm4svc_proc_granted(rqstp, rqstp->rq_resp);
265 }
266 
267 /*
268  * This is the generic lockd callback for async RPC calls
269  */
270 static void nlm4svc_callback_exit(struct rpc_task *task, void *data)
271 {
272 	dprintk("lockd: %5u callback returned %d\n", task->tk_pid,
273 			-task->tk_status);
274 }
275 
276 static void nlm4svc_callback_release(void *data)
277 {
278 	nlmsvc_release_call(data);
279 }
280 
281 static const struct rpc_call_ops nlm4svc_callback_ops = {
282 	.rpc_call_done = nlm4svc_callback_exit,
283 	.rpc_release = nlm4svc_callback_release,
284 };
285 
286 /*
287  * `Async' versions of the above service routines. They aren't really,
288  * because we send the callback before the reply proper. I hope this
289  * doesn't break any clients.
290  */
291 static __be32 nlm4svc_callback(struct svc_rqst *rqstp, u32 proc,
292 		__be32 (*func)(struct svc_rqst *,  struct nlm_res *))
293 {
294 	struct nlm_args *argp = rqstp->rq_argp;
295 	struct nlm_host	*host;
296 	struct nlm_rqst	*call;
297 	__be32 stat;
298 
299 	host = nlmsvc_lookup_host(rqstp,
300 				  argp->lock.caller,
301 				  argp->lock.len);
302 	if (host == NULL)
303 		return rpc_system_err;
304 
305 	call = nlm_alloc_call(host);
306 	nlmsvc_release_host(host);
307 	if (call == NULL)
308 		return rpc_system_err;
309 
310 	stat = func(rqstp, &call->a_res);
311 	if (stat != 0) {
312 		nlmsvc_release_call(call);
313 		return stat;
314 	}
315 
316 	call->a_flags = RPC_TASK_ASYNC;
317 	if (nlm_async_reply(call, proc, &nlm4svc_callback_ops) < 0)
318 		return rpc_system_err;
319 	return rpc_success;
320 }
321 
322 static __be32 nlm4svc_proc_test_msg(struct svc_rqst *rqstp)
323 {
324 	dprintk("lockd: TEST_MSG      called\n");
325 	return nlm4svc_callback(rqstp, NLMPROC_TEST_RES, __nlm4svc_proc_test);
326 }
327 
328 static __be32 nlm4svc_proc_lock_msg(struct svc_rqst *rqstp)
329 {
330 	dprintk("lockd: LOCK_MSG      called\n");
331 	return nlm4svc_callback(rqstp, NLMPROC_LOCK_RES, __nlm4svc_proc_lock);
332 }
333 
334 static __be32 nlm4svc_proc_cancel_msg(struct svc_rqst *rqstp)
335 {
336 	dprintk("lockd: CANCEL_MSG    called\n");
337 	return nlm4svc_callback(rqstp, NLMPROC_CANCEL_RES, __nlm4svc_proc_cancel);
338 }
339 
340 static __be32 nlm4svc_proc_unlock_msg(struct svc_rqst *rqstp)
341 {
342 	dprintk("lockd: UNLOCK_MSG    called\n");
343 	return nlm4svc_callback(rqstp, NLMPROC_UNLOCK_RES, __nlm4svc_proc_unlock);
344 }
345 
346 static __be32 nlm4svc_proc_granted_msg(struct svc_rqst *rqstp)
347 {
348 	dprintk("lockd: GRANTED_MSG   called\n");
349 	return nlm4svc_callback(rqstp, NLMPROC_GRANTED_RES, __nlm4svc_proc_granted);
350 }
351 
352 /*
353  * SHARE: create a DOS share or alter existing share.
354  */
355 static __be32
356 nlm4svc_proc_share(struct svc_rqst *rqstp)
357 {
358 	struct nlm_args *argp = rqstp->rq_argp;
359 	struct nlm_res *resp = rqstp->rq_resp;
360 	struct nlm_host	*host;
361 	struct nlm_file	*file;
362 
363 	dprintk("lockd: SHARE         called\n");
364 
365 	resp->cookie = argp->cookie;
366 
367 	/* Don't accept new lock requests during grace period */
368 	if (locks_in_grace(SVC_NET(rqstp)) && !argp->reclaim) {
369 		resp->status = nlm_lck_denied_grace_period;
370 		return rpc_success;
371 	}
372 
373 	/* Obtain client and file */
374 	if ((resp->status = nlm4svc_retrieve_args(rqstp, argp, &host, &file)))
375 		return resp->status == nlm_drop_reply ? rpc_drop_reply :rpc_success;
376 
377 	/* Now try to create the share */
378 	resp->status = nlmsvc_share_file(host, file, argp);
379 
380 	dprintk("lockd: SHARE         status %d\n", ntohl(resp->status));
381 	nlmsvc_release_lockowner(&argp->lock);
382 	nlmsvc_release_host(host);
383 	nlm_release_file(file);
384 	return rpc_success;
385 }
386 
387 /*
388  * UNSHARE: Release a DOS share.
389  */
390 static __be32
391 nlm4svc_proc_unshare(struct svc_rqst *rqstp)
392 {
393 	struct nlm_args *argp = rqstp->rq_argp;
394 	struct nlm_res *resp = rqstp->rq_resp;
395 	struct nlm_host	*host;
396 	struct nlm_file	*file;
397 
398 	dprintk("lockd: UNSHARE       called\n");
399 
400 	resp->cookie = argp->cookie;
401 
402 	/* Don't accept requests during grace period */
403 	if (locks_in_grace(SVC_NET(rqstp))) {
404 		resp->status = nlm_lck_denied_grace_period;
405 		return rpc_success;
406 	}
407 
408 	/* Obtain client and file */
409 	if ((resp->status = nlm4svc_retrieve_args(rqstp, argp, &host, &file)))
410 		return resp->status == nlm_drop_reply ? rpc_drop_reply :rpc_success;
411 
412 	/* Now try to lock the file */
413 	resp->status = nlmsvc_unshare_file(host, file, argp);
414 
415 	dprintk("lockd: UNSHARE       status %d\n", ntohl(resp->status));
416 	nlmsvc_release_lockowner(&argp->lock);
417 	nlmsvc_release_host(host);
418 	nlm_release_file(file);
419 	return rpc_success;
420 }
421 
422 /*
423  * NM_LOCK: Create an unmonitored lock
424  */
425 static __be32
426 nlm4svc_proc_nm_lock(struct svc_rqst *rqstp)
427 {
428 	struct nlm_args *argp = rqstp->rq_argp;
429 
430 	dprintk("lockd: NM_LOCK       called\n");
431 
432 	argp->monitor = 0;		/* just clean the monitor flag */
433 	return nlm4svc_proc_lock(rqstp);
434 }
435 
436 /*
437  * FREE_ALL: Release all locks and shares held by client
438  */
439 static __be32
440 nlm4svc_proc_free_all(struct svc_rqst *rqstp)
441 {
442 	struct nlm_args *argp = rqstp->rq_argp;
443 	struct nlm_host	*host;
444 
445 	/* Obtain client */
446 	if (nlm4svc_retrieve_args(rqstp, argp, &host, NULL))
447 		return rpc_success;
448 
449 	nlmsvc_free_host_resources(host);
450 	nlmsvc_release_host(host);
451 	return rpc_success;
452 }
453 
454 /*
455  * SM_NOTIFY: private callback from statd (not part of official NLM proto)
456  */
457 static __be32
458 nlm4svc_proc_sm_notify(struct svc_rqst *rqstp)
459 {
460 	struct nlm_reboot *argp = rqstp->rq_argp;
461 
462 	dprintk("lockd: SM_NOTIFY     called\n");
463 
464 	if (!nlm_privileged_requester(rqstp)) {
465 		char buf[RPC_MAX_ADDRBUFLEN];
466 		printk(KERN_WARNING "lockd: rejected NSM callback from %s\n",
467 				svc_print_addr(rqstp, buf, sizeof(buf)));
468 		return rpc_system_err;
469 	}
470 
471 	nlm_host_rebooted(SVC_NET(rqstp), argp);
472 	return rpc_success;
473 }
474 
475 /*
476  * client sent a GRANTED_RES, let's remove the associated block
477  */
478 static __be32
479 nlm4svc_proc_granted_res(struct svc_rqst *rqstp)
480 {
481 	struct nlm_res *argp = rqstp->rq_argp;
482 
483         if (!nlmsvc_ops)
484                 return rpc_success;
485 
486         dprintk("lockd: GRANTED_RES   called\n");
487 
488         nlmsvc_grant_reply(&argp->cookie, argp->status);
489         return rpc_success;
490 }
491 
492 static __be32
493 nlm4svc_proc_unused(struct svc_rqst *rqstp)
494 {
495 	return rpc_proc_unavail;
496 }
497 
498 
499 /*
500  * NLM Server procedures.
501  */
502 
503 struct nlm_void			{ int dummy; };
504 
505 #define	Ck	(1+XDR_QUADLEN(NLM_MAXCOOKIELEN))	/* cookie */
506 #define	No	(1+1024/4)				/* netobj */
507 #define	St	1					/* status */
508 #define	Rg	4					/* range (offset + length) */
509 
510 const struct svc_procedure nlmsvc_procedures4[24] = {
511 	[NLMPROC_NULL] = {
512 		.pc_func = nlm4svc_proc_null,
513 		.pc_decode = nlm4svc_decode_void,
514 		.pc_encode = nlm4svc_encode_void,
515 		.pc_argsize = sizeof(struct nlm_void),
516 		.pc_ressize = sizeof(struct nlm_void),
517 		.pc_xdrressize = St,
518 		.pc_name = "NULL",
519 	},
520 	[NLMPROC_TEST] = {
521 		.pc_func = nlm4svc_proc_test,
522 		.pc_decode = nlm4svc_decode_testargs,
523 		.pc_encode = nlm4svc_encode_testres,
524 		.pc_argsize = sizeof(struct nlm_args),
525 		.pc_ressize = sizeof(struct nlm_res),
526 		.pc_xdrressize = Ck+St+2+No+Rg,
527 		.pc_name = "TEST",
528 	},
529 	[NLMPROC_LOCK] = {
530 		.pc_func = nlm4svc_proc_lock,
531 		.pc_decode = nlm4svc_decode_lockargs,
532 		.pc_encode = nlm4svc_encode_res,
533 		.pc_argsize = 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_ressize = sizeof(struct nlm_res),
544 		.pc_xdrressize = Ck+St,
545 		.pc_name = "CANCEL",
546 	},
547 	[NLMPROC_UNLOCK] = {
548 		.pc_func = nlm4svc_proc_unlock,
549 		.pc_decode = nlm4svc_decode_unlockargs,
550 		.pc_encode = nlm4svc_encode_res,
551 		.pc_argsize = sizeof(struct nlm_args),
552 		.pc_ressize = sizeof(struct nlm_res),
553 		.pc_xdrressize = Ck+St,
554 		.pc_name = "UNLOCK",
555 	},
556 	[NLMPROC_GRANTED] = {
557 		.pc_func = nlm4svc_proc_granted,
558 		.pc_decode = nlm4svc_decode_testargs,
559 		.pc_encode = nlm4svc_encode_res,
560 		.pc_argsize = sizeof(struct nlm_args),
561 		.pc_ressize = sizeof(struct nlm_res),
562 		.pc_xdrressize = Ck+St,
563 		.pc_name = "GRANTED",
564 	},
565 	[NLMPROC_TEST_MSG] = {
566 		.pc_func = nlm4svc_proc_test_msg,
567 		.pc_decode = nlm4svc_decode_testargs,
568 		.pc_encode = nlm4svc_encode_void,
569 		.pc_argsize = sizeof(struct nlm_args),
570 		.pc_ressize = sizeof(struct nlm_void),
571 		.pc_xdrressize = St,
572 		.pc_name = "TEST_MSG",
573 	},
574 	[NLMPROC_LOCK_MSG] = {
575 		.pc_func = nlm4svc_proc_lock_msg,
576 		.pc_decode = nlm4svc_decode_lockargs,
577 		.pc_encode = nlm4svc_encode_void,
578 		.pc_argsize = sizeof(struct nlm_args),
579 		.pc_ressize = sizeof(struct nlm_void),
580 		.pc_xdrressize = St,
581 		.pc_name = "LOCK_MSG",
582 	},
583 	[NLMPROC_CANCEL_MSG] = {
584 		.pc_func = nlm4svc_proc_cancel_msg,
585 		.pc_decode = nlm4svc_decode_cancargs,
586 		.pc_encode = nlm4svc_encode_void,
587 		.pc_argsize = sizeof(struct nlm_args),
588 		.pc_ressize = sizeof(struct nlm_void),
589 		.pc_xdrressize = St,
590 		.pc_name = "CANCEL_MSG",
591 	},
592 	[NLMPROC_UNLOCK_MSG] = {
593 		.pc_func = nlm4svc_proc_unlock_msg,
594 		.pc_decode = nlm4svc_decode_unlockargs,
595 		.pc_encode = nlm4svc_encode_void,
596 		.pc_argsize = sizeof(struct nlm_args),
597 		.pc_ressize = sizeof(struct nlm_void),
598 		.pc_xdrressize = St,
599 		.pc_name = "UNLOCK_MSG",
600 	},
601 	[NLMPROC_GRANTED_MSG] = {
602 		.pc_func = nlm4svc_proc_granted_msg,
603 		.pc_decode = nlm4svc_decode_testargs,
604 		.pc_encode = nlm4svc_encode_void,
605 		.pc_argsize = sizeof(struct nlm_args),
606 		.pc_ressize = sizeof(struct nlm_void),
607 		.pc_xdrressize = St,
608 		.pc_name = "GRANTED_MSG",
609 	},
610 	[NLMPROC_TEST_RES] = {
611 		.pc_func = nlm4svc_proc_null,
612 		.pc_decode = nlm4svc_decode_void,
613 		.pc_encode = nlm4svc_encode_void,
614 		.pc_argsize = sizeof(struct nlm_res),
615 		.pc_ressize = sizeof(struct nlm_void),
616 		.pc_xdrressize = St,
617 		.pc_name = "TEST_RES",
618 	},
619 	[NLMPROC_LOCK_RES] = {
620 		.pc_func = nlm4svc_proc_null,
621 		.pc_decode = nlm4svc_decode_void,
622 		.pc_encode = nlm4svc_encode_void,
623 		.pc_argsize = sizeof(struct nlm_res),
624 		.pc_ressize = sizeof(struct nlm_void),
625 		.pc_xdrressize = St,
626 		.pc_name = "LOCK_RES",
627 	},
628 	[NLMPROC_CANCEL_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_ressize = sizeof(struct nlm_void),
634 		.pc_xdrressize = St,
635 		.pc_name = "CANCEL_RES",
636 	},
637 	[NLMPROC_UNLOCK_RES] = {
638 		.pc_func = nlm4svc_proc_null,
639 		.pc_decode = nlm4svc_decode_void,
640 		.pc_encode = nlm4svc_encode_void,
641 		.pc_argsize = sizeof(struct nlm_res),
642 		.pc_ressize = sizeof(struct nlm_void),
643 		.pc_xdrressize = St,
644 		.pc_name = "UNLOCK_RES",
645 	},
646 	[NLMPROC_GRANTED_RES] = {
647 		.pc_func = nlm4svc_proc_granted_res,
648 		.pc_decode = nlm4svc_decode_res,
649 		.pc_encode = nlm4svc_encode_void,
650 		.pc_argsize = sizeof(struct nlm_res),
651 		.pc_ressize = sizeof(struct nlm_void),
652 		.pc_xdrressize = St,
653 		.pc_name = "GRANTED_RES",
654 	},
655 	[NLMPROC_NSM_NOTIFY] = {
656 		.pc_func = nlm4svc_proc_sm_notify,
657 		.pc_decode = nlm4svc_decode_reboot,
658 		.pc_encode = nlm4svc_encode_void,
659 		.pc_argsize = sizeof(struct nlm_reboot),
660 		.pc_ressize = sizeof(struct nlm_void),
661 		.pc_xdrressize = St,
662 		.pc_name = "SM_NOTIFY",
663 	},
664 	[17] = {
665 		.pc_func = nlm4svc_proc_unused,
666 		.pc_decode = nlm4svc_decode_void,
667 		.pc_encode = nlm4svc_encode_void,
668 		.pc_argsize = sizeof(struct nlm_void),
669 		.pc_ressize = sizeof(struct nlm_void),
670 		.pc_xdrressize = 0,
671 		.pc_name = "UNUSED",
672 	},
673 	[18] = {
674 		.pc_func = nlm4svc_proc_unused,
675 		.pc_decode = nlm4svc_decode_void,
676 		.pc_encode = nlm4svc_encode_void,
677 		.pc_argsize = sizeof(struct nlm_void),
678 		.pc_ressize = sizeof(struct nlm_void),
679 		.pc_xdrressize = 0,
680 		.pc_name = "UNUSED",
681 	},
682 	[19] = {
683 		.pc_func = nlm4svc_proc_unused,
684 		.pc_decode = nlm4svc_decode_void,
685 		.pc_encode = nlm4svc_encode_void,
686 		.pc_argsize = sizeof(struct nlm_void),
687 		.pc_ressize = sizeof(struct nlm_void),
688 		.pc_xdrressize = 0,
689 		.pc_name = "UNUSED",
690 	},
691 	[NLMPROC_SHARE] = {
692 		.pc_func = nlm4svc_proc_share,
693 		.pc_decode = nlm4svc_decode_shareargs,
694 		.pc_encode = nlm4svc_encode_shareres,
695 		.pc_argsize = sizeof(struct nlm_args),
696 		.pc_ressize = sizeof(struct nlm_res),
697 		.pc_xdrressize = Ck+St+1,
698 		.pc_name = "SHARE",
699 	},
700 	[NLMPROC_UNSHARE] = {
701 		.pc_func = nlm4svc_proc_unshare,
702 		.pc_decode = nlm4svc_decode_shareargs,
703 		.pc_encode = nlm4svc_encode_shareres,
704 		.pc_argsize = sizeof(struct nlm_args),
705 		.pc_ressize = sizeof(struct nlm_res),
706 		.pc_xdrressize = Ck+St+1,
707 		.pc_name = "UNSHARE",
708 	},
709 	[NLMPROC_NM_LOCK] = {
710 		.pc_func = nlm4svc_proc_nm_lock,
711 		.pc_decode = nlm4svc_decode_lockargs,
712 		.pc_encode = nlm4svc_encode_res,
713 		.pc_argsize = sizeof(struct nlm_args),
714 		.pc_ressize = sizeof(struct nlm_res),
715 		.pc_xdrressize = Ck+St,
716 		.pc_name = "NM_LOCK",
717 	},
718 	[NLMPROC_FREE_ALL] = {
719 		.pc_func = nlm4svc_proc_free_all,
720 		.pc_decode = nlm4svc_decode_notify,
721 		.pc_encode = nlm4svc_encode_void,
722 		.pc_argsize = sizeof(struct nlm_args),
723 		.pc_ressize = sizeof(struct nlm_void),
724 		.pc_xdrressize = St,
725 		.pc_name = "FREE_ALL",
726 	},
727 };
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