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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
20static __be32
21cast_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 */
51static __be32
52nlmsvc_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.fl_flags = FL_POSIX;
81 lock->fl.fl_file = file->f_file[mode];
82 lock->fl.fl_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.fl_owner) {
86 /* lockowner allocation has failed */
87 nlmsvc_release_host(host);
88 return nlm_lck_denied_nolocks;
89 }
90 }
91
92 return 0;
93
94no_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 */
104static __be32
105nlmsvc_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 */
114static __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.fl_owner;
131
132 /* Now check for conflicting locks */
133 resp->status = cast_status(nlmsvc_testlock(rqstp, file, host, &argp->lock, &resp->lock, &resp->cookie));
134 if (resp->status == nlm_drop_reply)
135 rc = rpc_drop_reply;
136 else
137 dprintk("lockd: TEST status %d vers %d\n",
138 ntohl(resp->status), rqstp->rq_vers);
139
140 nlmsvc_put_lockowner(test_owner);
141 nlmsvc_release_host(host);
142 nlm_release_file(file);
143 return rc;
144}
145
146static __be32
147nlmsvc_proc_test(struct svc_rqst *rqstp)
148{
149 return __nlmsvc_proc_test(rqstp, rqstp->rq_resp);
150}
151
152static __be32
153__nlmsvc_proc_lock(struct svc_rqst *rqstp, struct nlm_res *resp)
154{
155 struct nlm_args *argp = rqstp->rq_argp;
156 struct nlm_host *host;
157 struct nlm_file *file;
158 __be32 rc = rpc_success;
159
160 dprintk("lockd: LOCK called\n");
161
162 resp->cookie = argp->cookie;
163
164 /* Obtain client and file */
165 if ((resp->status = nlmsvc_retrieve_args(rqstp, argp, &host, &file)))
166 return resp->status == nlm_drop_reply ? rpc_drop_reply :rpc_success;
167
168#if 0
169 /* If supplied state doesn't match current state, we assume it's
170 * an old request that time-warped somehow. Any error return would
171 * do in this case because it's irrelevant anyway.
172 *
173 * NB: We don't retrieve the remote host's state yet.
174 */
175 if (host->h_nsmstate && host->h_nsmstate != argp->state) {
176 resp->status = nlm_lck_denied_nolocks;
177 } else
178#endif
179
180 /* Now try to lock the file */
181 resp->status = cast_status(nlmsvc_lock(rqstp, file, host, &argp->lock,
182 argp->block, &argp->cookie,
183 argp->reclaim));
184 if (resp->status == nlm_drop_reply)
185 rc = rpc_drop_reply;
186 else
187 dprintk("lockd: LOCK status %d\n", ntohl(resp->status));
188
189 nlmsvc_release_lockowner(&argp->lock);
190 nlmsvc_release_host(host);
191 nlm_release_file(file);
192 return rc;
193}
194
195static __be32
196nlmsvc_proc_lock(struct svc_rqst *rqstp)
197{
198 return __nlmsvc_proc_lock(rqstp, rqstp->rq_resp);
199}
200
201static __be32
202__nlmsvc_proc_cancel(struct svc_rqst *rqstp, struct nlm_res *resp)
203{
204 struct nlm_args *argp = rqstp->rq_argp;
205 struct nlm_host *host;
206 struct nlm_file *file;
207 struct net *net = SVC_NET(rqstp);
208
209 dprintk("lockd: CANCEL called\n");
210
211 resp->cookie = argp->cookie;
212
213 /* Don't accept requests during grace period */
214 if (locks_in_grace(net)) {
215 resp->status = nlm_lck_denied_grace_period;
216 return rpc_success;
217 }
218
219 /* Obtain client and file */
220 if ((resp->status = nlmsvc_retrieve_args(rqstp, argp, &host, &file)))
221 return resp->status == nlm_drop_reply ? rpc_drop_reply :rpc_success;
222
223 /* Try to cancel request. */
224 resp->status = cast_status(nlmsvc_cancel_blocked(net, file, &argp->lock));
225
226 dprintk("lockd: CANCEL status %d\n", ntohl(resp->status));
227 nlmsvc_release_lockowner(&argp->lock);
228 nlmsvc_release_host(host);
229 nlm_release_file(file);
230 return rpc_success;
231}
232
233static __be32
234nlmsvc_proc_cancel(struct svc_rqst *rqstp)
235{
236 return __nlmsvc_proc_cancel(rqstp, rqstp->rq_resp);
237}
238
239/*
240 * UNLOCK: release a lock
241 */
242static __be32
243__nlmsvc_proc_unlock(struct svc_rqst *rqstp, struct nlm_res *resp)
244{
245 struct nlm_args *argp = rqstp->rq_argp;
246 struct nlm_host *host;
247 struct nlm_file *file;
248 struct net *net = SVC_NET(rqstp);
249
250 dprintk("lockd: UNLOCK called\n");
251
252 resp->cookie = argp->cookie;
253
254 /* Don't accept new lock requests during grace period */
255 if (locks_in_grace(net)) {
256 resp->status = nlm_lck_denied_grace_period;
257 return rpc_success;
258 }
259
260 /* Obtain client and file */
261 if ((resp->status = nlmsvc_retrieve_args(rqstp, argp, &host, &file)))
262 return resp->status == nlm_drop_reply ? rpc_drop_reply :rpc_success;
263
264 /* Now try to remove the lock */
265 resp->status = cast_status(nlmsvc_unlock(net, file, &argp->lock));
266
267 dprintk("lockd: UNLOCK status %d\n", ntohl(resp->status));
268 nlmsvc_release_lockowner(&argp->lock);
269 nlmsvc_release_host(host);
270 nlm_release_file(file);
271 return rpc_success;
272}
273
274static __be32
275nlmsvc_proc_unlock(struct svc_rqst *rqstp)
276{
277 return __nlmsvc_proc_unlock(rqstp, rqstp->rq_resp);
278}
279
280/*
281 * GRANTED: A server calls us to tell that a process' lock request
282 * was granted
283 */
284static __be32
285__nlmsvc_proc_granted(struct svc_rqst *rqstp, struct nlm_res *resp)
286{
287 struct nlm_args *argp = rqstp->rq_argp;
288
289 resp->cookie = argp->cookie;
290
291 dprintk("lockd: GRANTED called\n");
292 resp->status = nlmclnt_grant(svc_addr(rqstp), &argp->lock);
293 dprintk("lockd: GRANTED status %d\n", ntohl(resp->status));
294 return rpc_success;
295}
296
297static __be32
298nlmsvc_proc_granted(struct svc_rqst *rqstp)
299{
300 return __nlmsvc_proc_granted(rqstp, rqstp->rq_resp);
301}
302
303/*
304 * This is the generic lockd callback for async RPC calls
305 */
306static void nlmsvc_callback_exit(struct rpc_task *task, void *data)
307{
308}
309
310void nlmsvc_release_call(struct nlm_rqst *call)
311{
312 if (!refcount_dec_and_test(&call->a_count))
313 return;
314 nlmsvc_release_host(call->a_host);
315 kfree(call);
316}
317
318static void nlmsvc_callback_release(void *data)
319{
320 nlmsvc_release_call(data);
321}
322
323static const struct rpc_call_ops nlmsvc_callback_ops = {
324 .rpc_call_done = nlmsvc_callback_exit,
325 .rpc_release = nlmsvc_callback_release,
326};
327
328/*
329 * `Async' versions of the above service routines. They aren't really,
330 * because we send the callback before the reply proper. I hope this
331 * doesn't break any clients.
332 */
333static __be32 nlmsvc_callback(struct svc_rqst *rqstp, u32 proc,
334 __be32 (*func)(struct svc_rqst *, struct nlm_res *))
335{
336 struct nlm_args *argp = rqstp->rq_argp;
337 struct nlm_host *host;
338 struct nlm_rqst *call;
339 __be32 stat;
340
341 host = nlmsvc_lookup_host(rqstp,
342 argp->lock.caller,
343 argp->lock.len);
344 if (host == NULL)
345 return rpc_system_err;
346
347 call = nlm_alloc_call(host);
348 nlmsvc_release_host(host);
349 if (call == NULL)
350 return rpc_system_err;
351
352 stat = func(rqstp, &call->a_res);
353 if (stat != 0) {
354 nlmsvc_release_call(call);
355 return stat;
356 }
357
358 call->a_flags = RPC_TASK_ASYNC;
359 if (nlm_async_reply(call, proc, &nlmsvc_callback_ops) < 0)
360 return rpc_system_err;
361 return rpc_success;
362}
363
364static __be32 nlmsvc_proc_test_msg(struct svc_rqst *rqstp)
365{
366 dprintk("lockd: TEST_MSG called\n");
367 return nlmsvc_callback(rqstp, NLMPROC_TEST_RES, __nlmsvc_proc_test);
368}
369
370static __be32 nlmsvc_proc_lock_msg(struct svc_rqst *rqstp)
371{
372 dprintk("lockd: LOCK_MSG called\n");
373 return nlmsvc_callback(rqstp, NLMPROC_LOCK_RES, __nlmsvc_proc_lock);
374}
375
376static __be32 nlmsvc_proc_cancel_msg(struct svc_rqst *rqstp)
377{
378 dprintk("lockd: CANCEL_MSG called\n");
379 return nlmsvc_callback(rqstp, NLMPROC_CANCEL_RES, __nlmsvc_proc_cancel);
380}
381
382static __be32
383nlmsvc_proc_unlock_msg(struct svc_rqst *rqstp)
384{
385 dprintk("lockd: UNLOCK_MSG called\n");
386 return nlmsvc_callback(rqstp, NLMPROC_UNLOCK_RES, __nlmsvc_proc_unlock);
387}
388
389static __be32
390nlmsvc_proc_granted_msg(struct svc_rqst *rqstp)
391{
392 dprintk("lockd: GRANTED_MSG called\n");
393 return nlmsvc_callback(rqstp, NLMPROC_GRANTED_RES, __nlmsvc_proc_granted);
394}
395
396/*
397 * SHARE: create a DOS share or alter existing share.
398 */
399static __be32
400nlmsvc_proc_share(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: SHARE called\n");
408
409 resp->cookie = argp->cookie;
410
411 /* Don't accept new lock requests during grace period */
412 if (locks_in_grace(SVC_NET(rqstp)) && !argp->reclaim) {
413 resp->status = nlm_lck_denied_grace_period;
414 return rpc_success;
415 }
416
417 /* Obtain client and file */
418 if ((resp->status = nlmsvc_retrieve_args(rqstp, argp, &host, &file)))
419 return resp->status == nlm_drop_reply ? rpc_drop_reply :rpc_success;
420
421 /* Now try to create the share */
422 resp->status = cast_status(nlmsvc_share_file(host, file, argp));
423
424 dprintk("lockd: SHARE 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 * UNSHARE: Release a DOS share.
433 */
434static __be32
435nlmsvc_proc_unshare(struct svc_rqst *rqstp)
436{
437 struct nlm_args *argp = rqstp->rq_argp;
438 struct nlm_res *resp = rqstp->rq_resp;
439 struct nlm_host *host;
440 struct nlm_file *file;
441
442 dprintk("lockd: UNSHARE called\n");
443
444 resp->cookie = argp->cookie;
445
446 /* Don't accept requests during grace period */
447 if (locks_in_grace(SVC_NET(rqstp))) {
448 resp->status = nlm_lck_denied_grace_period;
449 return rpc_success;
450 }
451
452 /* Obtain client and file */
453 if ((resp->status = nlmsvc_retrieve_args(rqstp, argp, &host, &file)))
454 return resp->status == nlm_drop_reply ? rpc_drop_reply :rpc_success;
455
456 /* Now try to unshare the file */
457 resp->status = cast_status(nlmsvc_unshare_file(host, file, argp));
458
459 dprintk("lockd: UNSHARE status %d\n", ntohl(resp->status));
460 nlmsvc_release_lockowner(&argp->lock);
461 nlmsvc_release_host(host);
462 nlm_release_file(file);
463 return rpc_success;
464}
465
466/*
467 * NM_LOCK: Create an unmonitored lock
468 */
469static __be32
470nlmsvc_proc_nm_lock(struct svc_rqst *rqstp)
471{
472 struct nlm_args *argp = rqstp->rq_argp;
473
474 dprintk("lockd: NM_LOCK called\n");
475
476 argp->monitor = 0; /* just clean the monitor flag */
477 return nlmsvc_proc_lock(rqstp);
478}
479
480/*
481 * FREE_ALL: Release all locks and shares held by client
482 */
483static __be32
484nlmsvc_proc_free_all(struct svc_rqst *rqstp)
485{
486 struct nlm_args *argp = rqstp->rq_argp;
487 struct nlm_host *host;
488
489 /* Obtain client */
490 if (nlmsvc_retrieve_args(rqstp, argp, &host, NULL))
491 return rpc_success;
492
493 nlmsvc_free_host_resources(host);
494 nlmsvc_release_host(host);
495 return rpc_success;
496}
497
498/*
499 * SM_NOTIFY: private callback from statd (not part of official NLM proto)
500 */
501static __be32
502nlmsvc_proc_sm_notify(struct svc_rqst *rqstp)
503{
504 struct nlm_reboot *argp = rqstp->rq_argp;
505
506 dprintk("lockd: SM_NOTIFY called\n");
507
508 if (!nlm_privileged_requester(rqstp)) {
509 char buf[RPC_MAX_ADDRBUFLEN];
510 printk(KERN_WARNING "lockd: rejected NSM callback from %s\n",
511 svc_print_addr(rqstp, buf, sizeof(buf)));
512 return rpc_system_err;
513 }
514
515 nlm_host_rebooted(SVC_NET(rqstp), argp);
516 return rpc_success;
517}
518
519/*
520 * client sent a GRANTED_RES, let's remove the associated block
521 */
522static __be32
523nlmsvc_proc_granted_res(struct svc_rqst *rqstp)
524{
525 struct nlm_res *argp = rqstp->rq_argp;
526
527 if (!nlmsvc_ops)
528 return rpc_success;
529
530 dprintk("lockd: GRANTED_RES called\n");
531
532 nlmsvc_grant_reply(&argp->cookie, argp->status);
533 return rpc_success;
534}
535
536static __be32
537nlmsvc_proc_unused(struct svc_rqst *rqstp)
538{
539 return rpc_proc_unavail;
540}
541
542/*
543 * NLM Server procedures.
544 */
545
546struct nlm_void { int dummy; };
547
548#define Ck (1+XDR_QUADLEN(NLM_MAXCOOKIELEN)) /* cookie */
549#define St 1 /* status */
550#define No (1+1024/4) /* Net Obj */
551#define Rg 2 /* range - offset + size */
552
553const struct svc_procedure nlmsvc_procedures[24] = {
554 [NLMPROC_NULL] = {
555 .pc_func = nlmsvc_proc_null,
556 .pc_decode = nlmsvc_decode_void,
557 .pc_encode = nlmsvc_encode_void,
558 .pc_argsize = sizeof(struct nlm_void),
559 .pc_argzero = sizeof(struct nlm_void),
560 .pc_ressize = sizeof(struct nlm_void),
561 .pc_xdrressize = St,
562 .pc_name = "NULL",
563 },
564 [NLMPROC_TEST] = {
565 .pc_func = nlmsvc_proc_test,
566 .pc_decode = nlmsvc_decode_testargs,
567 .pc_encode = nlmsvc_encode_testres,
568 .pc_argsize = sizeof(struct nlm_args),
569 .pc_argzero = sizeof(struct nlm_args),
570 .pc_ressize = sizeof(struct nlm_res),
571 .pc_xdrressize = Ck+St+2+No+Rg,
572 .pc_name = "TEST",
573 },
574 [NLMPROC_LOCK] = {
575 .pc_func = nlmsvc_proc_lock,
576 .pc_decode = nlmsvc_decode_lockargs,
577 .pc_encode = nlmsvc_encode_res,
578 .pc_argsize = sizeof(struct nlm_args),
579 .pc_argzero = sizeof(struct nlm_args),
580 .pc_ressize = sizeof(struct nlm_res),
581 .pc_xdrressize = Ck+St,
582 .pc_name = "LOCK",
583 },
584 [NLMPROC_CANCEL] = {
585 .pc_func = nlmsvc_proc_cancel,
586 .pc_decode = nlmsvc_decode_cancargs,
587 .pc_encode = nlmsvc_encode_res,
588 .pc_argsize = sizeof(struct nlm_args),
589 .pc_argzero = sizeof(struct nlm_args),
590 .pc_ressize = sizeof(struct nlm_res),
591 .pc_xdrressize = Ck+St,
592 .pc_name = "CANCEL",
593 },
594 [NLMPROC_UNLOCK] = {
595 .pc_func = nlmsvc_proc_unlock,
596 .pc_decode = nlmsvc_decode_unlockargs,
597 .pc_encode = nlmsvc_encode_res,
598 .pc_argsize = sizeof(struct nlm_args),
599 .pc_argzero = sizeof(struct nlm_args),
600 .pc_ressize = sizeof(struct nlm_res),
601 .pc_xdrressize = Ck+St,
602 .pc_name = "UNLOCK",
603 },
604 [NLMPROC_GRANTED] = {
605 .pc_func = nlmsvc_proc_granted,
606 .pc_decode = nlmsvc_decode_testargs,
607 .pc_encode = nlmsvc_encode_res,
608 .pc_argsize = sizeof(struct nlm_args),
609 .pc_argzero = sizeof(struct nlm_args),
610 .pc_ressize = sizeof(struct nlm_res),
611 .pc_xdrressize = Ck+St,
612 .pc_name = "GRANTED",
613 },
614 [NLMPROC_TEST_MSG] = {
615 .pc_func = nlmsvc_proc_test_msg,
616 .pc_decode = nlmsvc_decode_testargs,
617 .pc_encode = nlmsvc_encode_void,
618 .pc_argsize = sizeof(struct nlm_args),
619 .pc_argzero = sizeof(struct nlm_args),
620 .pc_ressize = sizeof(struct nlm_void),
621 .pc_xdrressize = St,
622 .pc_name = "TEST_MSG",
623 },
624 [NLMPROC_LOCK_MSG] = {
625 .pc_func = nlmsvc_proc_lock_msg,
626 .pc_decode = nlmsvc_decode_lockargs,
627 .pc_encode = nlmsvc_encode_void,
628 .pc_argsize = sizeof(struct nlm_args),
629 .pc_argzero = sizeof(struct nlm_args),
630 .pc_ressize = sizeof(struct nlm_void),
631 .pc_xdrressize = St,
632 .pc_name = "LOCK_MSG",
633 },
634 [NLMPROC_CANCEL_MSG] = {
635 .pc_func = nlmsvc_proc_cancel_msg,
636 .pc_decode = nlmsvc_decode_cancargs,
637 .pc_encode = nlmsvc_encode_void,
638 .pc_argsize = sizeof(struct nlm_args),
639 .pc_argzero = sizeof(struct nlm_args),
640 .pc_ressize = sizeof(struct nlm_void),
641 .pc_xdrressize = St,
642 .pc_name = "CANCEL_MSG",
643 },
644 [NLMPROC_UNLOCK_MSG] = {
645 .pc_func = nlmsvc_proc_unlock_msg,
646 .pc_decode = nlmsvc_decode_unlockargs,
647 .pc_encode = nlmsvc_encode_void,
648 .pc_argsize = sizeof(struct nlm_args),
649 .pc_argzero = sizeof(struct nlm_args),
650 .pc_ressize = sizeof(struct nlm_void),
651 .pc_xdrressize = St,
652 .pc_name = "UNLOCK_MSG",
653 },
654 [NLMPROC_GRANTED_MSG] = {
655 .pc_func = nlmsvc_proc_granted_msg,
656 .pc_decode = nlmsvc_decode_testargs,
657 .pc_encode = nlmsvc_encode_void,
658 .pc_argsize = sizeof(struct nlm_args),
659 .pc_argzero = sizeof(struct nlm_args),
660 .pc_ressize = sizeof(struct nlm_void),
661 .pc_xdrressize = St,
662 .pc_name = "GRANTED_MSG",
663 },
664 [NLMPROC_TEST_RES] = {
665 .pc_func = nlmsvc_proc_null,
666 .pc_decode = nlmsvc_decode_void,
667 .pc_encode = nlmsvc_encode_void,
668 .pc_argsize = sizeof(struct nlm_res),
669 .pc_argzero = sizeof(struct nlm_res),
670 .pc_ressize = sizeof(struct nlm_void),
671 .pc_xdrressize = St,
672 .pc_name = "TEST_RES",
673 },
674 [NLMPROC_LOCK_RES] = {
675 .pc_func = nlmsvc_proc_null,
676 .pc_decode = nlmsvc_decode_void,
677 .pc_encode = nlmsvc_encode_void,
678 .pc_argsize = sizeof(struct nlm_res),
679 .pc_argzero = sizeof(struct nlm_res),
680 .pc_ressize = sizeof(struct nlm_void),
681 .pc_xdrressize = St,
682 .pc_name = "LOCK_RES",
683 },
684 [NLMPROC_CANCEL_RES] = {
685 .pc_func = nlmsvc_proc_null,
686 .pc_decode = nlmsvc_decode_void,
687 .pc_encode = nlmsvc_encode_void,
688 .pc_argsize = sizeof(struct nlm_res),
689 .pc_argzero = sizeof(struct nlm_res),
690 .pc_ressize = sizeof(struct nlm_void),
691 .pc_xdrressize = St,
692 .pc_name = "CANCEL_RES",
693 },
694 [NLMPROC_UNLOCK_RES] = {
695 .pc_func = nlmsvc_proc_null,
696 .pc_decode = nlmsvc_decode_void,
697 .pc_encode = nlmsvc_encode_void,
698 .pc_argsize = sizeof(struct nlm_res),
699 .pc_argzero = sizeof(struct nlm_res),
700 .pc_ressize = sizeof(struct nlm_void),
701 .pc_xdrressize = St,
702 .pc_name = "UNLOCK_RES",
703 },
704 [NLMPROC_GRANTED_RES] = {
705 .pc_func = nlmsvc_proc_granted_res,
706 .pc_decode = nlmsvc_decode_res,
707 .pc_encode = nlmsvc_encode_void,
708 .pc_argsize = sizeof(struct nlm_res),
709 .pc_argzero = sizeof(struct nlm_res),
710 .pc_ressize = sizeof(struct nlm_void),
711 .pc_xdrressize = St,
712 .pc_name = "GRANTED_RES",
713 },
714 [NLMPROC_NSM_NOTIFY] = {
715 .pc_func = nlmsvc_proc_sm_notify,
716 .pc_decode = nlmsvc_decode_reboot,
717 .pc_encode = nlmsvc_encode_void,
718 .pc_argsize = sizeof(struct nlm_reboot),
719 .pc_argzero = sizeof(struct nlm_reboot),
720 .pc_ressize = sizeof(struct nlm_void),
721 .pc_xdrressize = St,
722 .pc_name = "SM_NOTIFY",
723 },
724 [17] = {
725 .pc_func = nlmsvc_proc_unused,
726 .pc_decode = nlmsvc_decode_void,
727 .pc_encode = nlmsvc_encode_void,
728 .pc_argsize = sizeof(struct nlm_void),
729 .pc_argzero = sizeof(struct nlm_void),
730 .pc_ressize = sizeof(struct nlm_void),
731 .pc_xdrressize = St,
732 .pc_name = "UNUSED",
733 },
734 [18] = {
735 .pc_func = nlmsvc_proc_unused,
736 .pc_decode = nlmsvc_decode_void,
737 .pc_encode = nlmsvc_encode_void,
738 .pc_argsize = sizeof(struct nlm_void),
739 .pc_argzero = sizeof(struct nlm_void),
740 .pc_ressize = sizeof(struct nlm_void),
741 .pc_xdrressize = St,
742 .pc_name = "UNUSED",
743 },
744 [19] = {
745 .pc_func = nlmsvc_proc_unused,
746 .pc_decode = nlmsvc_decode_void,
747 .pc_encode = nlmsvc_encode_void,
748 .pc_argsize = sizeof(struct nlm_void),
749 .pc_argzero = sizeof(struct nlm_void),
750 .pc_ressize = sizeof(struct nlm_void),
751 .pc_xdrressize = St,
752 .pc_name = "UNUSED",
753 },
754 [NLMPROC_SHARE] = {
755 .pc_func = nlmsvc_proc_share,
756 .pc_decode = nlmsvc_decode_shareargs,
757 .pc_encode = nlmsvc_encode_shareres,
758 .pc_argsize = sizeof(struct nlm_args),
759 .pc_argzero = sizeof(struct nlm_args),
760 .pc_ressize = sizeof(struct nlm_res),
761 .pc_xdrressize = Ck+St+1,
762 .pc_name = "SHARE",
763 },
764 [NLMPROC_UNSHARE] = {
765 .pc_func = nlmsvc_proc_unshare,
766 .pc_decode = nlmsvc_decode_shareargs,
767 .pc_encode = nlmsvc_encode_shareres,
768 .pc_argsize = sizeof(struct nlm_args),
769 .pc_argzero = sizeof(struct nlm_args),
770 .pc_ressize = sizeof(struct nlm_res),
771 .pc_xdrressize = Ck+St+1,
772 .pc_name = "UNSHARE",
773 },
774 [NLMPROC_NM_LOCK] = {
775 .pc_func = nlmsvc_proc_nm_lock,
776 .pc_decode = nlmsvc_decode_lockargs,
777 .pc_encode = nlmsvc_encode_res,
778 .pc_argsize = sizeof(struct nlm_args),
779 .pc_argzero = sizeof(struct nlm_args),
780 .pc_ressize = sizeof(struct nlm_res),
781 .pc_xdrressize = Ck+St,
782 .pc_name = "NM_LOCK",
783 },
784 [NLMPROC_FREE_ALL] = {
785 .pc_func = nlmsvc_proc_free_all,
786 .pc_decode = nlmsvc_decode_notify,
787 .pc_encode = nlmsvc_encode_void,
788 .pc_argsize = sizeof(struct nlm_args),
789 .pc_argzero = sizeof(struct nlm_args),
790 .pc_ressize = sizeof(struct nlm_void),
791 .pc_xdrressize = 0,
792 .pc_name = "FREE_ALL",
793 },
794};
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
20static __be32
21cast_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 */
51static __be32
52nlmsvc_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 __be32 error = 0;
59
60 /* nfsd callbacks must have been installed for this procedure */
61 if (!nlmsvc_ops)
62 return nlm_lck_denied_nolocks;
63
64 /* Obtain host handle */
65 if (!(host = nlmsvc_lookup_host(rqstp, lock->caller, lock->len))
66 || (argp->monitor && nsm_monitor(host) < 0))
67 goto no_locks;
68 *hostp = host;
69
70 /* Obtain file pointer. Not used by FREE_ALL call. */
71 if (filp != NULL) {
72 error = cast_status(nlm_lookup_file(rqstp, &file, &lock->fh));
73 if (error != 0)
74 goto no_locks;
75 *filp = file;
76
77 /* Set up the missing parts of the file_lock structure */
78 lock->fl.fl_file = file->f_file;
79 lock->fl.fl_pid = current->tgid;
80 lock->fl.fl_lmops = &nlmsvc_lock_operations;
81 nlmsvc_locks_init_private(&lock->fl, host, (pid_t)lock->svid);
82 if (!lock->fl.fl_owner) {
83 /* lockowner allocation has failed */
84 nlmsvc_release_host(host);
85 return nlm_lck_denied_nolocks;
86 }
87 }
88
89 return 0;
90
91no_locks:
92 nlmsvc_release_host(host);
93 if (error)
94 return error;
95 return nlm_lck_denied_nolocks;
96}
97
98/*
99 * NULL: Test for presence of service
100 */
101static __be32
102nlmsvc_proc_null(struct svc_rqst *rqstp)
103{
104 dprintk("lockd: NULL called\n");
105 return rpc_success;
106}
107
108/*
109 * TEST: Check for conflicting lock
110 */
111static __be32
112__nlmsvc_proc_test(struct svc_rqst *rqstp, struct nlm_res *resp)
113{
114 struct nlm_args *argp = rqstp->rq_argp;
115 struct nlm_host *host;
116 struct nlm_file *file;
117 __be32 rc = rpc_success;
118
119 dprintk("lockd: TEST called\n");
120 resp->cookie = argp->cookie;
121
122 /* Obtain client and file */
123 if ((resp->status = nlmsvc_retrieve_args(rqstp, argp, &host, &file)))
124 return resp->status == nlm_drop_reply ? rpc_drop_reply :rpc_success;
125
126 /* Now check for conflicting locks */
127 resp->status = cast_status(nlmsvc_testlock(rqstp, file, host, &argp->lock, &resp->lock, &resp->cookie));
128 if (resp->status == nlm_drop_reply)
129 rc = rpc_drop_reply;
130 else
131 dprintk("lockd: TEST status %d vers %d\n",
132 ntohl(resp->status), rqstp->rq_vers);
133
134 nlmsvc_release_lockowner(&argp->lock);
135 nlmsvc_release_host(host);
136 nlm_release_file(file);
137 return rc;
138}
139
140static __be32
141nlmsvc_proc_test(struct svc_rqst *rqstp)
142{
143 return __nlmsvc_proc_test(rqstp, rqstp->rq_resp);
144}
145
146static __be32
147__nlmsvc_proc_lock(struct svc_rqst *rqstp, struct nlm_res *resp)
148{
149 struct nlm_args *argp = rqstp->rq_argp;
150 struct nlm_host *host;
151 struct nlm_file *file;
152 __be32 rc = rpc_success;
153
154 dprintk("lockd: LOCK called\n");
155
156 resp->cookie = argp->cookie;
157
158 /* Obtain client and file */
159 if ((resp->status = nlmsvc_retrieve_args(rqstp, argp, &host, &file)))
160 return resp->status == nlm_drop_reply ? rpc_drop_reply :rpc_success;
161
162#if 0
163 /* If supplied state doesn't match current state, we assume it's
164 * an old request that time-warped somehow. Any error return would
165 * do in this case because it's irrelevant anyway.
166 *
167 * NB: We don't retrieve the remote host's state yet.
168 */
169 if (host->h_nsmstate && host->h_nsmstate != argp->state) {
170 resp->status = nlm_lck_denied_nolocks;
171 } else
172#endif
173
174 /* Now try to lock the file */
175 resp->status = cast_status(nlmsvc_lock(rqstp, file, host, &argp->lock,
176 argp->block, &argp->cookie,
177 argp->reclaim));
178 if (resp->status == nlm_drop_reply)
179 rc = rpc_drop_reply;
180 else
181 dprintk("lockd: LOCK status %d\n", ntohl(resp->status));
182
183 nlmsvc_release_lockowner(&argp->lock);
184 nlmsvc_release_host(host);
185 nlm_release_file(file);
186 return rc;
187}
188
189static __be32
190nlmsvc_proc_lock(struct svc_rqst *rqstp)
191{
192 return __nlmsvc_proc_lock(rqstp, rqstp->rq_resp);
193}
194
195static __be32
196__nlmsvc_proc_cancel(struct svc_rqst *rqstp, struct nlm_res *resp)
197{
198 struct nlm_args *argp = rqstp->rq_argp;
199 struct nlm_host *host;
200 struct nlm_file *file;
201 struct net *net = SVC_NET(rqstp);
202
203 dprintk("lockd: CANCEL called\n");
204
205 resp->cookie = argp->cookie;
206
207 /* Don't accept requests during grace period */
208 if (locks_in_grace(net)) {
209 resp->status = nlm_lck_denied_grace_period;
210 return rpc_success;
211 }
212
213 /* Obtain client and file */
214 if ((resp->status = nlmsvc_retrieve_args(rqstp, argp, &host, &file)))
215 return resp->status == nlm_drop_reply ? rpc_drop_reply :rpc_success;
216
217 /* Try to cancel request. */
218 resp->status = cast_status(nlmsvc_cancel_blocked(net, file, &argp->lock));
219
220 dprintk("lockd: CANCEL status %d\n", ntohl(resp->status));
221 nlmsvc_release_lockowner(&argp->lock);
222 nlmsvc_release_host(host);
223 nlm_release_file(file);
224 return rpc_success;
225}
226
227static __be32
228nlmsvc_proc_cancel(struct svc_rqst *rqstp)
229{
230 return __nlmsvc_proc_cancel(rqstp, rqstp->rq_resp);
231}
232
233/*
234 * UNLOCK: release a lock
235 */
236static __be32
237__nlmsvc_proc_unlock(struct svc_rqst *rqstp, struct nlm_res *resp)
238{
239 struct nlm_args *argp = rqstp->rq_argp;
240 struct nlm_host *host;
241 struct nlm_file *file;
242 struct net *net = SVC_NET(rqstp);
243
244 dprintk("lockd: UNLOCK called\n");
245
246 resp->cookie = argp->cookie;
247
248 /* Don't accept new lock requests during grace period */
249 if (locks_in_grace(net)) {
250 resp->status = nlm_lck_denied_grace_period;
251 return rpc_success;
252 }
253
254 /* Obtain client and file */
255 if ((resp->status = nlmsvc_retrieve_args(rqstp, argp, &host, &file)))
256 return resp->status == nlm_drop_reply ? rpc_drop_reply :rpc_success;
257
258 /* Now try to remove the lock */
259 resp->status = cast_status(nlmsvc_unlock(net, file, &argp->lock));
260
261 dprintk("lockd: UNLOCK status %d\n", ntohl(resp->status));
262 nlmsvc_release_lockowner(&argp->lock);
263 nlmsvc_release_host(host);
264 nlm_release_file(file);
265 return rpc_success;
266}
267
268static __be32
269nlmsvc_proc_unlock(struct svc_rqst *rqstp)
270{
271 return __nlmsvc_proc_unlock(rqstp, rqstp->rq_resp);
272}
273
274/*
275 * GRANTED: A server calls us to tell that a process' lock request
276 * was granted
277 */
278static __be32
279__nlmsvc_proc_granted(struct svc_rqst *rqstp, struct nlm_res *resp)
280{
281 struct nlm_args *argp = rqstp->rq_argp;
282
283 resp->cookie = argp->cookie;
284
285 dprintk("lockd: GRANTED called\n");
286 resp->status = nlmclnt_grant(svc_addr(rqstp), &argp->lock);
287 dprintk("lockd: GRANTED status %d\n", ntohl(resp->status));
288 return rpc_success;
289}
290
291static __be32
292nlmsvc_proc_granted(struct svc_rqst *rqstp)
293{
294 return __nlmsvc_proc_granted(rqstp, rqstp->rq_resp);
295}
296
297/*
298 * This is the generic lockd callback for async RPC calls
299 */
300static void nlmsvc_callback_exit(struct rpc_task *task, void *data)
301{
302 dprintk("lockd: %5u callback returned %d\n", task->tk_pid,
303 -task->tk_status);
304}
305
306void nlmsvc_release_call(struct nlm_rqst *call)
307{
308 if (!refcount_dec_and_test(&call->a_count))
309 return;
310 nlmsvc_release_host(call->a_host);
311 kfree(call);
312}
313
314static void nlmsvc_callback_release(void *data)
315{
316 nlmsvc_release_call(data);
317}
318
319static const struct rpc_call_ops nlmsvc_callback_ops = {
320 .rpc_call_done = nlmsvc_callback_exit,
321 .rpc_release = nlmsvc_callback_release,
322};
323
324/*
325 * `Async' versions of the above service routines. They aren't really,
326 * because we send the callback before the reply proper. I hope this
327 * doesn't break any clients.
328 */
329static __be32 nlmsvc_callback(struct svc_rqst *rqstp, u32 proc,
330 __be32 (*func)(struct svc_rqst *, struct nlm_res *))
331{
332 struct nlm_args *argp = rqstp->rq_argp;
333 struct nlm_host *host;
334 struct nlm_rqst *call;
335 __be32 stat;
336
337 host = nlmsvc_lookup_host(rqstp,
338 argp->lock.caller,
339 argp->lock.len);
340 if (host == NULL)
341 return rpc_system_err;
342
343 call = nlm_alloc_call(host);
344 nlmsvc_release_host(host);
345 if (call == NULL)
346 return rpc_system_err;
347
348 stat = func(rqstp, &call->a_res);
349 if (stat != 0) {
350 nlmsvc_release_call(call);
351 return stat;
352 }
353
354 call->a_flags = RPC_TASK_ASYNC;
355 if (nlm_async_reply(call, proc, &nlmsvc_callback_ops) < 0)
356 return rpc_system_err;
357 return rpc_success;
358}
359
360static __be32 nlmsvc_proc_test_msg(struct svc_rqst *rqstp)
361{
362 dprintk("lockd: TEST_MSG called\n");
363 return nlmsvc_callback(rqstp, NLMPROC_TEST_RES, __nlmsvc_proc_test);
364}
365
366static __be32 nlmsvc_proc_lock_msg(struct svc_rqst *rqstp)
367{
368 dprintk("lockd: LOCK_MSG called\n");
369 return nlmsvc_callback(rqstp, NLMPROC_LOCK_RES, __nlmsvc_proc_lock);
370}
371
372static __be32 nlmsvc_proc_cancel_msg(struct svc_rqst *rqstp)
373{
374 dprintk("lockd: CANCEL_MSG called\n");
375 return nlmsvc_callback(rqstp, NLMPROC_CANCEL_RES, __nlmsvc_proc_cancel);
376}
377
378static __be32
379nlmsvc_proc_unlock_msg(struct svc_rqst *rqstp)
380{
381 dprintk("lockd: UNLOCK_MSG called\n");
382 return nlmsvc_callback(rqstp, NLMPROC_UNLOCK_RES, __nlmsvc_proc_unlock);
383}
384
385static __be32
386nlmsvc_proc_granted_msg(struct svc_rqst *rqstp)
387{
388 dprintk("lockd: GRANTED_MSG called\n");
389 return nlmsvc_callback(rqstp, NLMPROC_GRANTED_RES, __nlmsvc_proc_granted);
390}
391
392/*
393 * SHARE: create a DOS share or alter existing share.
394 */
395static __be32
396nlmsvc_proc_share(struct svc_rqst *rqstp)
397{
398 struct nlm_args *argp = rqstp->rq_argp;
399 struct nlm_res *resp = rqstp->rq_resp;
400 struct nlm_host *host;
401 struct nlm_file *file;
402
403 dprintk("lockd: SHARE called\n");
404
405 resp->cookie = argp->cookie;
406
407 /* Don't accept new lock requests during grace period */
408 if (locks_in_grace(SVC_NET(rqstp)) && !argp->reclaim) {
409 resp->status = nlm_lck_denied_grace_period;
410 return rpc_success;
411 }
412
413 /* Obtain client and file */
414 if ((resp->status = nlmsvc_retrieve_args(rqstp, argp, &host, &file)))
415 return resp->status == nlm_drop_reply ? rpc_drop_reply :rpc_success;
416
417 /* Now try to create the share */
418 resp->status = cast_status(nlmsvc_share_file(host, file, argp));
419
420 dprintk("lockd: SHARE status %d\n", ntohl(resp->status));
421 nlmsvc_release_lockowner(&argp->lock);
422 nlmsvc_release_host(host);
423 nlm_release_file(file);
424 return rpc_success;
425}
426
427/*
428 * UNSHARE: Release a DOS share.
429 */
430static __be32
431nlmsvc_proc_unshare(struct svc_rqst *rqstp)
432{
433 struct nlm_args *argp = rqstp->rq_argp;
434 struct nlm_res *resp = rqstp->rq_resp;
435 struct nlm_host *host;
436 struct nlm_file *file;
437
438 dprintk("lockd: UNSHARE called\n");
439
440 resp->cookie = argp->cookie;
441
442 /* Don't accept requests during grace period */
443 if (locks_in_grace(SVC_NET(rqstp))) {
444 resp->status = nlm_lck_denied_grace_period;
445 return rpc_success;
446 }
447
448 /* Obtain client and file */
449 if ((resp->status = nlmsvc_retrieve_args(rqstp, argp, &host, &file)))
450 return resp->status == nlm_drop_reply ? rpc_drop_reply :rpc_success;
451
452 /* Now try to unshare the file */
453 resp->status = cast_status(nlmsvc_unshare_file(host, file, argp));
454
455 dprintk("lockd: UNSHARE status %d\n", ntohl(resp->status));
456 nlmsvc_release_lockowner(&argp->lock);
457 nlmsvc_release_host(host);
458 nlm_release_file(file);
459 return rpc_success;
460}
461
462/*
463 * NM_LOCK: Create an unmonitored lock
464 */
465static __be32
466nlmsvc_proc_nm_lock(struct svc_rqst *rqstp)
467{
468 struct nlm_args *argp = rqstp->rq_argp;
469
470 dprintk("lockd: NM_LOCK called\n");
471
472 argp->monitor = 0; /* just clean the monitor flag */
473 return nlmsvc_proc_lock(rqstp);
474}
475
476/*
477 * FREE_ALL: Release all locks and shares held by client
478 */
479static __be32
480nlmsvc_proc_free_all(struct svc_rqst *rqstp)
481{
482 struct nlm_args *argp = rqstp->rq_argp;
483 struct nlm_host *host;
484
485 /* Obtain client */
486 if (nlmsvc_retrieve_args(rqstp, argp, &host, NULL))
487 return rpc_success;
488
489 nlmsvc_free_host_resources(host);
490 nlmsvc_release_host(host);
491 return rpc_success;
492}
493
494/*
495 * SM_NOTIFY: private callback from statd (not part of official NLM proto)
496 */
497static __be32
498nlmsvc_proc_sm_notify(struct svc_rqst *rqstp)
499{
500 struct nlm_reboot *argp = rqstp->rq_argp;
501
502 dprintk("lockd: SM_NOTIFY called\n");
503
504 if (!nlm_privileged_requester(rqstp)) {
505 char buf[RPC_MAX_ADDRBUFLEN];
506 printk(KERN_WARNING "lockd: rejected NSM callback from %s\n",
507 svc_print_addr(rqstp, buf, sizeof(buf)));
508 return rpc_system_err;
509 }
510
511 nlm_host_rebooted(SVC_NET(rqstp), argp);
512 return rpc_success;
513}
514
515/*
516 * client sent a GRANTED_RES, let's remove the associated block
517 */
518static __be32
519nlmsvc_proc_granted_res(struct svc_rqst *rqstp)
520{
521 struct nlm_res *argp = rqstp->rq_argp;
522
523 if (!nlmsvc_ops)
524 return rpc_success;
525
526 dprintk("lockd: GRANTED_RES called\n");
527
528 nlmsvc_grant_reply(&argp->cookie, argp->status);
529 return rpc_success;
530}
531
532static __be32
533nlmsvc_proc_unused(struct svc_rqst *rqstp)
534{
535 return rpc_proc_unavail;
536}
537
538/*
539 * NLM Server procedures.
540 */
541
542struct nlm_void { int dummy; };
543
544#define Ck (1+XDR_QUADLEN(NLM_MAXCOOKIELEN)) /* cookie */
545#define St 1 /* status */
546#define No (1+1024/4) /* Net Obj */
547#define Rg 2 /* range - offset + size */
548
549const struct svc_procedure nlmsvc_procedures[24] = {
550 [NLMPROC_NULL] = {
551 .pc_func = nlmsvc_proc_null,
552 .pc_decode = nlmsvc_decode_void,
553 .pc_encode = nlmsvc_encode_void,
554 .pc_argsize = sizeof(struct nlm_void),
555 .pc_ressize = sizeof(struct nlm_void),
556 .pc_xdrressize = St,
557 .pc_name = "NULL",
558 },
559 [NLMPROC_TEST] = {
560 .pc_func = nlmsvc_proc_test,
561 .pc_decode = nlmsvc_decode_testargs,
562 .pc_encode = nlmsvc_encode_testres,
563 .pc_argsize = sizeof(struct nlm_args),
564 .pc_ressize = sizeof(struct nlm_res),
565 .pc_xdrressize = Ck+St+2+No+Rg,
566 .pc_name = "TEST",
567 },
568 [NLMPROC_LOCK] = {
569 .pc_func = nlmsvc_proc_lock,
570 .pc_decode = nlmsvc_decode_lockargs,
571 .pc_encode = nlmsvc_encode_res,
572 .pc_argsize = sizeof(struct nlm_args),
573 .pc_ressize = sizeof(struct nlm_res),
574 .pc_xdrressize = Ck+St,
575 .pc_name = "LOCK",
576 },
577 [NLMPROC_CANCEL] = {
578 .pc_func = nlmsvc_proc_cancel,
579 .pc_decode = nlmsvc_decode_cancargs,
580 .pc_encode = nlmsvc_encode_res,
581 .pc_argsize = sizeof(struct nlm_args),
582 .pc_ressize = sizeof(struct nlm_res),
583 .pc_xdrressize = Ck+St,
584 .pc_name = "CANCEL",
585 },
586 [NLMPROC_UNLOCK] = {
587 .pc_func = nlmsvc_proc_unlock,
588 .pc_decode = nlmsvc_decode_unlockargs,
589 .pc_encode = nlmsvc_encode_res,
590 .pc_argsize = sizeof(struct nlm_args),
591 .pc_ressize = sizeof(struct nlm_res),
592 .pc_xdrressize = Ck+St,
593 .pc_name = "UNLOCK",
594 },
595 [NLMPROC_GRANTED] = {
596 .pc_func = nlmsvc_proc_granted,
597 .pc_decode = nlmsvc_decode_testargs,
598 .pc_encode = nlmsvc_encode_res,
599 .pc_argsize = sizeof(struct nlm_args),
600 .pc_ressize = sizeof(struct nlm_res),
601 .pc_xdrressize = Ck+St,
602 .pc_name = "GRANTED",
603 },
604 [NLMPROC_TEST_MSG] = {
605 .pc_func = nlmsvc_proc_test_msg,
606 .pc_decode = nlmsvc_decode_testargs,
607 .pc_encode = nlmsvc_encode_void,
608 .pc_argsize = 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_ressize = sizeof(struct nlm_void),
619 .pc_xdrressize = St,
620 .pc_name = "LOCK_MSG",
621 },
622 [NLMPROC_CANCEL_MSG] = {
623 .pc_func = nlmsvc_proc_cancel_msg,
624 .pc_decode = nlmsvc_decode_cancargs,
625 .pc_encode = nlmsvc_encode_void,
626 .pc_argsize = sizeof(struct nlm_args),
627 .pc_ressize = sizeof(struct nlm_void),
628 .pc_xdrressize = St,
629 .pc_name = "CANCEL_MSG",
630 },
631 [NLMPROC_UNLOCK_MSG] = {
632 .pc_func = nlmsvc_proc_unlock_msg,
633 .pc_decode = nlmsvc_decode_unlockargs,
634 .pc_encode = nlmsvc_encode_void,
635 .pc_argsize = sizeof(struct nlm_args),
636 .pc_ressize = sizeof(struct nlm_void),
637 .pc_xdrressize = St,
638 .pc_name = "UNLOCK_MSG",
639 },
640 [NLMPROC_GRANTED_MSG] = {
641 .pc_func = nlmsvc_proc_granted_msg,
642 .pc_decode = nlmsvc_decode_testargs,
643 .pc_encode = nlmsvc_encode_void,
644 .pc_argsize = sizeof(struct nlm_args),
645 .pc_ressize = sizeof(struct nlm_void),
646 .pc_xdrressize = St,
647 .pc_name = "GRANTED_MSG",
648 },
649 [NLMPROC_TEST_RES] = {
650 .pc_func = nlmsvc_proc_null,
651 .pc_decode = nlmsvc_decode_void,
652 .pc_encode = nlmsvc_encode_void,
653 .pc_argsize = sizeof(struct nlm_res),
654 .pc_ressize = sizeof(struct nlm_void),
655 .pc_xdrressize = St,
656 .pc_name = "TEST_RES",
657 },
658 [NLMPROC_LOCK_RES] = {
659 .pc_func = nlmsvc_proc_null,
660 .pc_decode = nlmsvc_decode_void,
661 .pc_encode = nlmsvc_encode_void,
662 .pc_argsize = sizeof(struct nlm_res),
663 .pc_ressize = sizeof(struct nlm_void),
664 .pc_xdrressize = St,
665 .pc_name = "LOCK_RES",
666 },
667 [NLMPROC_CANCEL_RES] = {
668 .pc_func = nlmsvc_proc_null,
669 .pc_decode = nlmsvc_decode_void,
670 .pc_encode = nlmsvc_encode_void,
671 .pc_argsize = sizeof(struct nlm_res),
672 .pc_ressize = sizeof(struct nlm_void),
673 .pc_xdrressize = St,
674 .pc_name = "CANCEL_RES",
675 },
676 [NLMPROC_UNLOCK_RES] = {
677 .pc_func = nlmsvc_proc_null,
678 .pc_decode = nlmsvc_decode_void,
679 .pc_encode = nlmsvc_encode_void,
680 .pc_argsize = sizeof(struct nlm_res),
681 .pc_ressize = sizeof(struct nlm_void),
682 .pc_xdrressize = St,
683 .pc_name = "UNLOCK_RES",
684 },
685 [NLMPROC_GRANTED_RES] = {
686 .pc_func = nlmsvc_proc_granted_res,
687 .pc_decode = nlmsvc_decode_res,
688 .pc_encode = nlmsvc_encode_void,
689 .pc_argsize = sizeof(struct nlm_res),
690 .pc_ressize = sizeof(struct nlm_void),
691 .pc_xdrressize = St,
692 .pc_name = "GRANTED_RES",
693 },
694 [NLMPROC_NSM_NOTIFY] = {
695 .pc_func = nlmsvc_proc_sm_notify,
696 .pc_decode = nlmsvc_decode_reboot,
697 .pc_encode = nlmsvc_encode_void,
698 .pc_argsize = sizeof(struct nlm_reboot),
699 .pc_ressize = sizeof(struct nlm_void),
700 .pc_xdrressize = St,
701 .pc_name = "SM_NOTIFY",
702 },
703 [17] = {
704 .pc_func = nlmsvc_proc_unused,
705 .pc_decode = nlmsvc_decode_void,
706 .pc_encode = nlmsvc_encode_void,
707 .pc_argsize = sizeof(struct nlm_void),
708 .pc_ressize = sizeof(struct nlm_void),
709 .pc_xdrressize = St,
710 .pc_name = "UNUSED",
711 },
712 [18] = {
713 .pc_func = nlmsvc_proc_unused,
714 .pc_decode = nlmsvc_decode_void,
715 .pc_encode = nlmsvc_encode_void,
716 .pc_argsize = sizeof(struct nlm_void),
717 .pc_ressize = sizeof(struct nlm_void),
718 .pc_xdrressize = St,
719 .pc_name = "UNUSED",
720 },
721 [19] = {
722 .pc_func = nlmsvc_proc_unused,
723 .pc_decode = nlmsvc_decode_void,
724 .pc_encode = nlmsvc_encode_void,
725 .pc_argsize = sizeof(struct nlm_void),
726 .pc_ressize = sizeof(struct nlm_void),
727 .pc_xdrressize = St,
728 .pc_name = "UNUSED",
729 },
730 [NLMPROC_SHARE] = {
731 .pc_func = nlmsvc_proc_share,
732 .pc_decode = nlmsvc_decode_shareargs,
733 .pc_encode = nlmsvc_encode_shareres,
734 .pc_argsize = sizeof(struct nlm_args),
735 .pc_ressize = sizeof(struct nlm_res),
736 .pc_xdrressize = Ck+St+1,
737 .pc_name = "SHARE",
738 },
739 [NLMPROC_UNSHARE] = {
740 .pc_func = nlmsvc_proc_unshare,
741 .pc_decode = nlmsvc_decode_shareargs,
742 .pc_encode = nlmsvc_encode_shareres,
743 .pc_argsize = sizeof(struct nlm_args),
744 .pc_ressize = sizeof(struct nlm_res),
745 .pc_xdrressize = Ck+St+1,
746 .pc_name = "UNSHARE",
747 },
748 [NLMPROC_NM_LOCK] = {
749 .pc_func = nlmsvc_proc_nm_lock,
750 .pc_decode = nlmsvc_decode_lockargs,
751 .pc_encode = nlmsvc_encode_res,
752 .pc_argsize = sizeof(struct nlm_args),
753 .pc_ressize = sizeof(struct nlm_res),
754 .pc_xdrressize = Ck+St,
755 .pc_name = "NM_LOCK",
756 },
757 [NLMPROC_FREE_ALL] = {
758 .pc_func = nlmsvc_proc_free_all,
759 .pc_decode = nlmsvc_decode_notify,
760 .pc_encode = nlmsvc_encode_void,
761 .pc_argsize = sizeof(struct nlm_args),
762 .pc_ressize = sizeof(struct nlm_void),
763 .pc_xdrressize = 0,
764 .pc_name = "FREE_ALL",
765 },
766};