1 /*
2  * Copyright (c) 2008 Isilon Inc http://www.isilon.com/
3  * Authors: Doug Rabson <dfr@rabson.org>
4  * Developed with Red Inc: Alfred Perlstein <alfred@freebsd.org>
5  *
6  * Redistribution and use in source and binary forms, with or without
7  * modification, are permitted provided that the following conditions
8  * are met:
9  * 1. Redistributions of source code must retain the above copyright
10  *    notice, this list of conditions and the following disclaimer.
11  * 2. Redistributions in binary form must reproduce the above copyright
12  *    notice, this list of conditions and the following disclaimer in the
13  *    documentation and/or other materials provided with the distribution.
14  *
15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25  * SUCH DAMAGE.
26  */
27 
28 /*
29  * Copyright 2013 Nexenta Systems, Inc.  All rights reserved.
30  * Copyright (c) 2012 by Delphix. All rights reserved.
31  */
32 
33 /*
34  * NFS Lock Manager, RPC service functions (nlm_..._svc)
35  * Called via nlm_dispatch.c tables.
36  *
37  * Source code derived from FreeBSD nlm_prot_server.c
38  *
39  * The real service functions all use nlm4_... args and return
40  * data types.  These wrappers convert older forms to and from
41  * the new forms and call the nlm_do_... service functions.
42  */
43 
44 #include <sys/param.h>
45 #include <sys/systm.h>
46 
47 #include <rpcsvc/nlm_prot.h>
48 #include "nlm_impl.h"
49 
50 /*
51  * Convert between various versions of the protocol structures.
52  */
53 
54 /*
55  * Down-convert, for granted_1 call
56  *
57  * This converts a 64-bit lock to 32-bit form for our granted
58  * call-back when we're dealing with a 32-bit NLM client.
59  * Our NLM_LOCK handler ensures that any lock we grant to a
60  * 32-bit client can be represented in 32-bits.  If the
61  * ASSERTs here fire, then the call to nlm_init_flock in
62  * nlm_do_lock has failed to restrict a 32-bit client to
63  * 32-bit lock ranges.
64  */
65 static void
66 nlm_convert_to_nlm_lock(struct nlm_lock *dst, struct nlm4_lock *src)
67 {
68 	dst->caller_name = src->caller_name;
69 	dst->fh = src->fh;
70 	dst->oh = src->oh;
71 	dst->svid = src->svid;
72 	ASSERT(src->l_offset <= MAX_UOFF32);
73 	dst->l_offset = (uint32_t)src->l_offset;
74 	ASSERT(src->l_len <= MAX_UOFF32);
75 	dst->l_len = (uint32_t)src->l_len;
76 }
77 
78 /*
79  * Up-convert for v1 svc functions with a 32-bit lock range arg.
80  * Note that lock range checks (like overflow) are done later,
81  * in nlm_init_flock().
82  */
83 static void
84 nlm_convert_to_nlm4_lock(struct nlm4_lock *dst, struct nlm_lock *src)
85 {
86 
87 	dst->caller_name = src->caller_name;
88 	dst->fh = src->fh;
89 	dst->oh = src->oh;
90 	dst->svid = src->svid;
91 	dst->l_offset = src->l_offset;
92 	dst->l_len = src->l_len;
93 }
94 
95 static void
96 nlm_convert_to_nlm4_share(struct nlm4_share *dst, struct nlm_share *src)
97 {
98 
99 	dst->caller_name = src->caller_name;
100 	dst->fh = src->fh;
101 	dst->oh = src->oh;
102 	dst->mode = src->mode;
103 	dst->access = src->access;
104 }
105 
106 /*
107  * Down-convert for v1 NLM_TEST or NLM_TEST_MSG response.
108  * Note that nlm_do_test is careful to give us lock ranges
109  * that can be represented with 32-bit values.  If the
110  * ASSERTs here fire, then the code in nlm_do_test that
111  * builds an nlm4_holder for a 32-bit client has failed to
112  * restrict the reported conflicting lock range so it's a
113  * valid 32-bit lock range.
114  */
115 static void
116 nlm_convert_to_nlm_holder(struct nlm_holder *dst, struct nlm4_holder *src)
117 {
118 	dst->exclusive = src->exclusive;
119 	dst->svid = src->svid;
120 	dst->oh = src->oh;
121 	ASSERT(src->l_offset <= MAX_UOFF32);
122 	dst->l_offset = (uint32_t)src->l_offset;
123 	ASSERT(src->l_len <= MAX_UOFF32);
124 	dst->l_len = (uint32_t)src->l_len;
125 }
126 
127 static enum nlm_stats
128 nlm_convert_to_nlm_stats(enum nlm4_stats src)
129 {
130 	if (src > nlm4_deadlck)
131 		return (nlm_denied);
132 	return ((enum nlm_stats)src);
133 }
134 
135 static void
136 nlm_convert_to_nlm_res(struct nlm_res *dst, struct nlm4_res *src)
137 {
138 	dst->cookie = src->cookie;
139 	dst->stat.stat = nlm_convert_to_nlm_stats(src->stat.stat);
140 }
141 
142 /* ******************************************************************** */
143 
144 /*
145  * Version 1 svc functions
146  */
147 
148 bool_t
149 nlm_test_1_svc(struct nlm_testargs *argp, nlm_testres *resp,
150     struct svc_req *sr)
151 {
152 	nlm4_testargs args4;
153 	nlm4_testres res4;
154 
155 	bzero(&args4, sizeof (args4));
156 	bzero(&res4, sizeof (res4));
157 
158 	args4.cookie = argp->cookie;
159 	args4.exclusive = argp->exclusive;
160 	nlm_convert_to_nlm4_lock(&args4.alock, &argp->alock);
161 
162 	nlm_do_test(&args4, &res4, sr, NULL);
163 
164 	resp->cookie = res4.cookie;
165 	resp->stat.stat = nlm_convert_to_nlm_stats(res4.stat.stat);
166 	if (resp->stat.stat == nlm_denied)
167 		nlm_convert_to_nlm_holder(
168 		    &resp->stat.nlm_testrply_u.holder,
169 		    &res4.stat.nlm4_testrply_u.holder);
170 
171 	return (TRUE);
172 }
173 
174 /*
175  * Callback functions for nlm_lock_1_svc
176  */
177 static bool_t nlm_lock_1_reply(SVCXPRT *, nlm4_res *);
178 static enum clnt_stat nlm_granted_1_cb(nlm4_testargs *, void *, CLIENT *);
179 
180 bool_t
181 nlm_lock_1_svc(nlm_lockargs *argp, nlm_res *resp,
182     struct svc_req *sr)
183 {
184 	nlm4_lockargs args4;
185 	nlm4_res res4;
186 
187 	bzero(&res4, sizeof (res4));
188 
189 	args4.cookie = argp->cookie;
190 	args4.block = argp->block;
191 	args4.exclusive = argp->exclusive;
192 	nlm_convert_to_nlm4_lock(&args4.alock, &argp->alock);
193 	args4.reclaim = argp->reclaim;
194 	args4.state = argp->state;
195 
196 	/* NLM_LOCK */
197 	nlm_do_lock(&args4, &res4, sr,
198 	    nlm_lock_1_reply, NULL,
199 	    nlm_granted_1_cb);
200 
201 	/* for freeresult */
202 	nlm_convert_to_nlm_res(resp, &res4);
203 
204 	/* above does its own reply */
205 	return (FALSE);
206 }
207 
208 static bool_t
209 nlm_lock_1_reply(SVCXPRT *transp, nlm4_res *resp)
210 {
211 	nlm_res res1;
212 
213 	nlm_convert_to_nlm_res(&res1, resp);
214 	return (svc_sendreply(transp, xdr_nlm_res, (char *)&res1));
215 }
216 
217 static enum clnt_stat
218 nlm_granted_1_cb(nlm4_testargs *argp, void *resp, CLIENT *clnt)
219 {
220 	nlm_testargs args1;
221 	nlm_res res1;
222 	int rv;
223 
224 	bzero(&res1, sizeof (res1));
225 
226 	args1.cookie = argp->cookie;
227 	args1.exclusive = argp->exclusive;
228 	nlm_convert_to_nlm_lock(&args1.alock, &argp->alock);
229 
230 	rv = nlm_granted_1(&args1, &res1, clnt);
231 
232 	/* NB: We have a result our caller will not free. */
233 	xdr_free((xdrproc_t)xdr_nlm_res, (void *)&res1);
234 	(void) resp;
235 
236 	return (rv);
237 }
238 
239 bool_t
240 nlm_cancel_1_svc(struct nlm_cancargs *argp, nlm_res *resp,
241     struct svc_req *sr)
242 {
243 	nlm4_cancargs args4;
244 	nlm4_res res4;
245 
246 	bzero(&res4, sizeof (res4));
247 
248 	args4.cookie = argp->cookie;
249 	args4.block = argp->block;
250 	args4.exclusive = argp->exclusive;
251 	nlm_convert_to_nlm4_lock(&args4.alock, &argp->alock);
252 
253 	nlm_do_cancel(&args4, &res4, sr, NULL);
254 
255 	nlm_convert_to_nlm_res(resp, &res4);
256 
257 	return (TRUE);
258 }
259 
260 bool_t
261 nlm_unlock_1_svc(struct nlm_unlockargs *argp, nlm_res *resp,
262     struct svc_req *sr)
263 {
264 	nlm4_unlockargs args4;
265 	nlm4_res res4;
266 
267 	bzero(&res4, sizeof (res4));
268 
269 	args4.cookie = argp->cookie;
270 	nlm_convert_to_nlm4_lock(&args4.alock, &argp->alock);
271 
272 	nlm_do_unlock(&args4, &res4, sr, NULL);
273 
274 	nlm_convert_to_nlm_res(resp, &res4);
275 
276 	return (TRUE);
277 }
278 
279 bool_t
280 nlm_granted_1_svc(struct nlm_testargs *argp, nlm_res *resp,
281     struct svc_req *sr)
282 {
283 	nlm4_testargs args4;
284 	nlm4_res res4;
285 
286 	bzero(&res4, sizeof (res4));
287 
288 	args4.cookie = argp->cookie;
289 	args4.exclusive = argp->exclusive;
290 	nlm_convert_to_nlm4_lock(&args4.alock, &argp->alock);
291 
292 	nlm_do_granted(&args4, &res4, sr, NULL);
293 
294 	nlm_convert_to_nlm_res(resp, &res4);
295 
296 	return (TRUE);
297 }
298 
299 /*
300  * The _msg_ calls get no reply.  Instead, these callers
301  * expect an RPC call to the corresponding _res function.
302  * We pass this callback function to nlm_do_test so it will
303  * use it to do the RPC callback, with the correct res type.
304  *
305  * The callback functions have nearly the same arg signature
306  * as the client call functions so that many of those can be
307  * optimized to nothing by the compiler.  Also, passing the
308  * null result arg for these just to reduce warnings.
309  *
310  * See similar callbacks for other _msg functions below.
311  */
312 
313 static enum clnt_stat nlm_test_res_1_cb(nlm4_testres *, void *, CLIENT *);
314 
315 bool_t
316 nlm_test_msg_1_svc(struct nlm_testargs *argp, void *resp,
317     struct svc_req *sr)
318 {
319 	nlm4_testargs args4;
320 	nlm4_testres res4;
321 
322 	bzero(&res4, sizeof (res4));
323 
324 	args4.cookie = argp->cookie;
325 	args4.exclusive = argp->exclusive;
326 	nlm_convert_to_nlm4_lock(&args4.alock, &argp->alock);
327 
328 	nlm_do_test(&args4, &res4, sr,
329 	    nlm_test_res_1_cb);
330 
331 	/* NB: We have a result our caller will not free. */
332 	xdr_free((xdrproc_t)xdr_nlm4_testres, (void *)&res4);
333 	(void) resp;
334 
335 	/* The _msg_ calls get no reply. */
336 	return (FALSE);
337 }
338 
339 static enum clnt_stat
340 nlm_test_res_1_cb(nlm4_testres *res4, void *null, CLIENT *clnt)
341 {
342 	nlm_testres res1;
343 
344 	res1.cookie = res4->cookie;
345 	res1.stat.stat = nlm_convert_to_nlm_stats(res4->stat.stat);
346 	if (res1.stat.stat == nlm_denied)
347 		nlm_convert_to_nlm_holder(
348 		    &res1.stat.nlm_testrply_u.holder,
349 		    &res4->stat.nlm4_testrply_u.holder);
350 
351 	return (nlm_test_res_1(&res1, null, clnt));
352 }
353 
354 /*
355  * Callback functions for nlm_lock_msg_1_svc
356  */
357 static enum clnt_stat nlm_lock_res_1_cb(nlm4_res *, void *, CLIENT *);
358 static enum clnt_stat nlm_granted_msg_1_cb(nlm4_testargs *, void *, CLIENT *);
359 
360 bool_t
361 nlm_lock_msg_1_svc(nlm_lockargs *argp, void *resp,
362     struct svc_req *sr)
363 {
364 	nlm4_lockargs args4;
365 	nlm4_res res4;
366 
367 	bzero(&res4, sizeof (res4));
368 
369 	args4.cookie = argp->cookie;
370 	args4.block = argp->block;
371 	args4.exclusive = argp->exclusive;
372 	nlm_convert_to_nlm4_lock(&args4.alock, &argp->alock);
373 	args4.reclaim = argp->reclaim;
374 	args4.state = argp->state;
375 
376 	/* NLM_LOCK_MSG */
377 	nlm_do_lock(&args4, &res4, sr,
378 	    NULL, nlm_lock_res_1_cb,
379 	    nlm_granted_msg_1_cb);
380 
381 	/* NB: We have a result our caller will not free. */
382 	xdr_free((xdrproc_t)xdr_nlm4_res, (void *)&res4);
383 	(void) resp;
384 
385 	/* The _msg_ calls get no reply. */
386 	return (FALSE);
387 }
388 
389 static enum clnt_stat
390 nlm_lock_res_1_cb(nlm4_res *resp, void *null, CLIENT *clnt)
391 {
392 	nlm_res res1;
393 
394 	nlm_convert_to_nlm_res(&res1, resp);
395 	return (nlm_lock_res_1(&res1, null, clnt));
396 }
397 
398 static enum clnt_stat
399 nlm_granted_msg_1_cb(nlm4_testargs *argp, void *null, CLIENT *clnt)
400 {
401 	nlm_testargs args1;
402 
403 	args1.cookie = argp->cookie;
404 	args1.exclusive = argp->exclusive;
405 	nlm_convert_to_nlm_lock(&args1.alock, &argp->alock);
406 
407 	return (nlm_granted_msg_1(&args1, null, clnt));
408 
409 }
410 
411 
412 static enum clnt_stat nlm_cancel_res_1_cb(nlm4_res *, void *, CLIENT *);
413 
414 bool_t
415 nlm_cancel_msg_1_svc(struct nlm_cancargs *argp, void *resp,
416     struct svc_req *sr)
417 {
418 	nlm4_cancargs args4;
419 	nlm4_res res4;
420 
421 	bzero(&res4, sizeof (res4));
422 
423 	args4.cookie = argp->cookie;
424 	args4.block = argp->block;
425 	args4.exclusive = argp->exclusive;
426 	nlm_convert_to_nlm4_lock(&args4.alock, &argp->alock);
427 
428 	nlm_do_cancel(&args4, &res4, sr,
429 	    nlm_cancel_res_1_cb);
430 
431 	/* NB: We have a result our caller will not free. */
432 	xdr_free((xdrproc_t)xdr_nlm4_res, (void *)&res4);
433 	(void) resp;
434 
435 	/* The _msg_ calls get no reply. */
436 	return (FALSE);
437 }
438 
439 static enum clnt_stat
440 nlm_cancel_res_1_cb(nlm4_res *res4, void *null, CLIENT *clnt)
441 {
442 	nlm_res res1;
443 
444 	nlm_convert_to_nlm_res(&res1, res4);
445 	return (nlm_cancel_res_1(&res1, null, clnt));
446 }
447 
448 
449 static enum clnt_stat nlm_unlock_res_1_cb(nlm4_res *, void *, CLIENT *);
450 
451 bool_t
452 nlm_unlock_msg_1_svc(struct nlm_unlockargs *argp, void *resp,
453     struct svc_req *sr)
454 {
455 	nlm4_unlockargs args4;
456 	nlm4_res res4;
457 
458 	bzero(&res4, sizeof (res4));
459 
460 	args4.cookie = argp->cookie;
461 	nlm_convert_to_nlm4_lock(&args4.alock, &argp->alock);
462 
463 	nlm_do_unlock(&args4, &res4, sr,
464 	    nlm_unlock_res_1_cb);
465 
466 	/* NB: We have a result our caller will not free. */
467 	xdr_free((xdrproc_t)xdr_nlm4_res, (void *)&res4);
468 	(void) resp;
469 
470 	/* The _msg_ calls get no reply. */
471 	return (FALSE);
472 }
473 
474 static enum clnt_stat
475 nlm_unlock_res_1_cb(nlm4_res *res4, void *null, CLIENT *clnt)
476 {
477 	nlm_res res1;
478 
479 	nlm_convert_to_nlm_res(&res1, res4);
480 	return (nlm_unlock_res_1(&res1, null, clnt));
481 }
482 
483 
484 static enum clnt_stat nlm_granted_res_1_cb(nlm4_res *, void *, CLIENT *);
485 
486 bool_t
487 nlm_granted_msg_1_svc(struct nlm_testargs *argp, void *resp,
488     struct svc_req *sr)
489 {
490 	nlm4_testargs args4;
491 	nlm4_res res4;
492 
493 	bzero(&res4, sizeof (res4));
494 
495 	args4.cookie = argp->cookie;
496 	args4.exclusive = argp->exclusive;
497 	nlm_convert_to_nlm4_lock(&args4.alock, &argp->alock);
498 
499 	nlm_do_granted(&args4, &res4, sr,
500 	    nlm_granted_res_1_cb);
501 
502 	/* NB: We have a result our caller will not free. */
503 	xdr_free((xdrproc_t)xdr_nlm4_res, (void *)&res4);
504 	(void) resp;
505 
506 	/* The _msg_ calls get no reply. */
507 	return (FALSE);
508 }
509 
510 static enum clnt_stat
511 nlm_granted_res_1_cb(nlm4_res *res4, void *null, CLIENT *clnt)
512 {
513 	nlm_res res1;
514 
515 	nlm_convert_to_nlm_res(&res1, res4);
516 	return (nlm_granted_res_1(&res1, null, clnt));
517 }
518 
519 /*
520  * The _res_ calls get no reply.  These RPC calls are
521  * "call backs" in response to RPC _msg_ calls.
522  * We don't care about these responses.
523  */
524 
525 /* ARGSUSED */
526 bool_t
527 nlm_test_res_1_svc(nlm_testres *argp, void *resp, struct svc_req *sr)
528 {
529 	/* The _res_ calls get no reply. */
530 	return (FALSE);
531 }
532 
533 /* ARGSUSED */
534 bool_t
535 nlm_lock_res_1_svc(nlm_res *argp, void *resp, struct svc_req *sr)
536 {
537 	/* The _res_ calls get no reply. */
538 	return (FALSE);
539 }
540 
541 /* ARGSUSED */
542 bool_t
543 nlm_cancel_res_1_svc(nlm_res *argp, void *resp, struct svc_req *sr)
544 {
545 	/* The _res_ calls get no reply. */
546 	return (FALSE);
547 }
548 
549 /* ARGSUSED */
550 bool_t
551 nlm_unlock_res_1_svc(nlm_res *argp, void *resp, struct svc_req *sr)
552 {
553 	/* The _res_ calls get no reply. */
554 	return (FALSE);
555 }
556 
557 /* ARGSUSED */
558 bool_t
559 nlm_granted_res_1_svc(nlm_res *argp, void *resp, struct svc_req *sr)
560 {
561 	/* The _res_ calls get no reply. */
562 	return (FALSE);
563 }
564 
565 /*
566  * Version 2 svc functions (used by local statd)
567  */
568 
569 bool_t
570 nlm_sm_notify1_2_svc(struct nlm_sm_status *argp, void *resp,
571     struct svc_req *sr)
572 {
573 	nlm_do_notify1(argp, resp, sr);
574 	return (TRUE);
575 }
576 
577 bool_t
578 nlm_sm_notify2_2_svc(struct nlm_sm_status *argp, void *resp,
579     struct svc_req *sr)
580 {
581 	nlm_do_notify2(argp, resp, sr);
582 	return (TRUE);
583 }
584 
585 /*
586  * Version 3 svc functions
587  */
588 
589 bool_t
590 nlm_share_3_svc(nlm_shareargs *argp, nlm_shareres *resp,
591     struct svc_req *sr)
592 {
593 	nlm4_shareargs args4;
594 	nlm4_shareres res4;
595 
596 	bzero(&res4, sizeof (res4));
597 
598 	args4.cookie = argp->cookie;
599 	nlm_convert_to_nlm4_share(&args4.share, &argp->share);
600 	args4.reclaim = argp->reclaim;
601 
602 	nlm_do_share(&args4, &res4, sr);
603 
604 	resp->cookie = res4.cookie;
605 	resp->stat = nlm_convert_to_nlm_stats(res4.stat);
606 	resp->sequence = res4.sequence;
607 
608 	return (TRUE);
609 }
610 
611 bool_t
612 nlm_unshare_3_svc(nlm_shareargs *argp, nlm_shareres *resp,
613     struct svc_req *sr)
614 {
615 	nlm4_shareargs args4;
616 	nlm4_shareres res4;
617 
618 	bzero(&res4, sizeof (res4));
619 
620 	args4.cookie = argp->cookie;
621 	nlm_convert_to_nlm4_share(&args4.share, &argp->share);
622 	args4.reclaim = argp->reclaim;
623 
624 	nlm_do_unshare(&args4, &res4, sr);
625 
626 	resp->cookie = res4.cookie;
627 	resp->stat = nlm_convert_to_nlm_stats(res4.stat);
628 	resp->sequence = res4.sequence;
629 
630 	return (TRUE);
631 }
632 
633 bool_t
634 nlm_nm_lock_3_svc(nlm_lockargs *argp, nlm_res *resp, struct svc_req *sr)
635 {
636 	nlm4_lockargs args4;
637 	nlm4_res res4;
638 
639 	bzero(&res4, sizeof (res4));
640 
641 	args4.cookie = argp->cookie;
642 	args4.block = argp->block;
643 	args4.exclusive = argp->exclusive;
644 	nlm_convert_to_nlm4_lock(&args4.alock, &argp->alock);
645 	args4.reclaim = argp->reclaim;
646 	args4.state = argp->state;
647 
648 	/*
649 	 * Don't allow blocking for non-monitored (nm_lock) calls.
650 	 * These clients don't handle any callbacks, including
651 	 * the granted call we make after a blocking lock.
652 	 * Same reply callback as nlm_lock_1_svc
653 	 */
654 	args4.block = FALSE;
655 
656 	/* NLM_NM_LOCK */
657 	nlm_do_lock(&args4, &res4, sr,
658 	    nlm_lock_1_reply, NULL,
659 	    NULL); /* indicates non-monitored */
660 
661 	/* for freeresult */
662 	nlm_convert_to_nlm_res(resp, &res4);
663 
664 	/* above does its own reply */
665 	return (FALSE);
666 }
667 
668 bool_t
669 nlm_free_all_3_svc(nlm_notify *argp, void *resp, struct svc_req *sr)
670 {
671 	struct nlm4_notify args4;
672 
673 	args4.name = argp->name;
674 	args4.state = argp->state;
675 
676 	nlm_do_free_all(&args4, resp, sr);
677 
678 	return (TRUE);
679 }
680 
681 /*
682  * Version 4 svc functions
683  */
684 
685 bool_t
686 nlm4_test_4_svc(nlm4_testargs *argp, nlm4_testres *resp, struct svc_req *sr)
687 {
688 	nlm_do_test(argp, resp, sr, NULL);
689 	return (TRUE);
690 }
691 
692 /*
693  * Callback functions for nlm4_lock_4_svc
694  */
695 static bool_t nlm4_lock_4_reply(SVCXPRT *, nlm4_res *);
696 static enum clnt_stat nlm4_granted_4_cb(nlm4_testargs *, void *, CLIENT *);
697 
698 bool_t
699 nlm4_lock_4_svc(nlm4_lockargs *argp, nlm4_res *resp,
700     struct svc_req *sr)
701 {
702 
703 	/* NLM4_LOCK */
704 	nlm_do_lock(argp, resp, sr,
705 	    nlm4_lock_4_reply, NULL,
706 	    nlm4_granted_4_cb);
707 
708 	/* above does its own reply */
709 	return (FALSE);
710 }
711 
712 static bool_t
713 nlm4_lock_4_reply(SVCXPRT *transp, nlm4_res *resp)
714 {
715 	return (svc_sendreply(transp, xdr_nlm4_res, (char *)resp));
716 }
717 
718 static enum clnt_stat
719 nlm4_granted_4_cb(nlm4_testargs *argp, void *resp, CLIENT *clnt)
720 {
721 	nlm4_res res4;
722 	int rv;
723 
724 	bzero(&res4, sizeof (res4));
725 	rv = nlm4_granted_4(argp, &res4, clnt);
726 
727 	/* NB: We have a result our caller will not free. */
728 	xdr_free((xdrproc_t)xdr_nlm4_res, (void *)&res4);
729 	(void) resp;
730 
731 	return (rv);
732 }
733 
734 bool_t
735 nlm4_cancel_4_svc(nlm4_cancargs *argp, nlm4_res *resp, struct svc_req *sr)
736 {
737 	nlm_do_cancel(argp, resp, sr, NULL);
738 	return (TRUE);
739 }
740 
741 bool_t
742 nlm4_unlock_4_svc(nlm4_unlockargs *argp, nlm4_res *resp, struct svc_req *sr)
743 {
744 	nlm_do_unlock(argp, resp, sr, NULL);
745 	return (TRUE);
746 }
747 
748 bool_t
749 nlm4_granted_4_svc(nlm4_testargs *argp, nlm4_res *resp, struct svc_req *sr)
750 {
751 	nlm_do_granted(argp, resp, sr, NULL);
752 	return (TRUE);
753 }
754 
755 bool_t
756 nlm4_test_msg_4_svc(nlm4_testargs *argp, void *resp, struct svc_req *sr)
757 {
758 	nlm4_testres res4;
759 
760 	bzero(&res4, sizeof (res4));
761 	nlm_do_test(argp, &res4, sr,
762 	    nlm4_test_res_4);
763 
764 	/* NB: We have a result our caller will not free. */
765 	xdr_free((xdrproc_t)xdr_nlm4_testres, (void *)&res4);
766 	(void) resp;
767 
768 	/* The _msg_ calls get no reply. */
769 	return (FALSE);
770 }
771 
772 /*
773  * Callback functions for nlm4_lock_msg_4_svc
774  * (using the RPC client stubs directly)
775  */
776 
777 bool_t
778 nlm4_lock_msg_4_svc(nlm4_lockargs *argp, void *resp,
779     struct svc_req *sr)
780 {
781 	nlm4_res res4;
782 
783 	/* NLM4_LOCK_MSG */
784 	bzero(&res4, sizeof (res4));
785 	nlm_do_lock(argp, &res4, sr,
786 	    NULL, nlm4_lock_res_4,
787 	    nlm4_granted_msg_4);
788 
789 	/* NB: We have a result our caller will not free. */
790 	xdr_free((xdrproc_t)xdr_nlm4_res, (void *)&res4);
791 	(void) resp;
792 
793 	/* The _msg_ calls get no reply. */
794 	return (FALSE);
795 }
796 
797 bool_t
798 nlm4_cancel_msg_4_svc(nlm4_cancargs *argp, void *resp, struct svc_req *sr)
799 {
800 	nlm4_res res4;
801 
802 	bzero(&res4, sizeof (res4));
803 	nlm_do_cancel(argp, &res4, sr,
804 	    nlm4_cancel_res_4);
805 
806 	/* NB: We have a result our caller will not free. */
807 	xdr_free((xdrproc_t)xdr_nlm4_res, (void *)&res4);
808 	(void) resp;
809 
810 	/* The _msg_ calls get no reply. */
811 	return (FALSE);
812 }
813 
814 bool_t
815 nlm4_unlock_msg_4_svc(nlm4_unlockargs *argp, void *resp, struct svc_req *sr)
816 {
817 	nlm4_res res4;
818 
819 	bzero(&res4, sizeof (res4));
820 	nlm_do_unlock(argp, &res4, sr,
821 	    nlm4_unlock_res_4);
822 
823 	/* NB: We have a result our caller will not free. */
824 	xdr_free((xdrproc_t)xdr_nlm4_res, (void *)&res4);
825 	(void) resp;
826 
827 	/* The _msg_ calls get no reply. */
828 	return (FALSE);
829 }
830 
831 bool_t
832 nlm4_granted_msg_4_svc(nlm4_testargs *argp, void *resp, struct svc_req *sr)
833 {
834 	nlm4_res res4;
835 
836 	bzero(&res4, sizeof (res4));
837 	nlm_do_granted(argp, &res4, sr,
838 	    nlm4_granted_res_4);
839 
840 	/* NB: We have a result our caller will not free. */
841 	xdr_free((xdrproc_t)xdr_nlm4_res, (void *)&res4);
842 	(void) resp;
843 
844 	/* The _msg_ calls get no reply. */
845 	return (FALSE);
846 }
847 
848 /* ARGSUSED */
849 bool_t
850 nlm4_test_res_4_svc(nlm4_testres *argp, void *resp, struct svc_req *sr)
851 {
852 	/* The _res_ calls get no reply. */
853 	return (FALSE);
854 }
855 
856 /* ARGSUSED */
857 bool_t
858 nlm4_lock_res_4_svc(nlm4_res *argp, void *resp, struct svc_req *sr)
859 {
860 	/* The _res_ calls get no reply. */
861 	return (FALSE);
862 }
863 
864 /* ARGSUSED */
865 bool_t
866 nlm4_cancel_res_4_svc(nlm4_res *argp, void *resp, struct svc_req *sr)
867 {
868 	/* The _res_ calls get no reply. */
869 	return (FALSE);
870 }
871 
872 /* ARGSUSED */
873 bool_t
874 nlm4_unlock_res_4_svc(nlm4_res *argp, void *resp, struct svc_req *sr)
875 {
876 	/* The _res_ calls get no reply. */
877 	return (FALSE);
878 }
879 
880 /* ARGSUSED */
881 bool_t
882 nlm4_granted_res_4_svc(nlm4_res *argp, void *resp, struct svc_req *sr)
883 {
884 	/* The _res_ calls get no reply. */
885 	return (FALSE);
886 }
887 
888 /* ARGSUSED */
889 bool_t
890 nlm4_share_4_svc(nlm4_shareargs *argp, nlm4_shareres *resp,
891     struct svc_req *sr)
892 {
893 	nlm_do_share(argp, resp, sr);
894 	return (TRUE);
895 }
896 
897 /* ARGSUSED */
898 bool_t
899 nlm4_unshare_4_svc(nlm4_shareargs *argp, nlm4_shareres *resp,
900     struct svc_req *sr)
901 {
902 	nlm_do_unshare(argp, resp, sr);
903 	return (TRUE);
904 }
905 
906 bool_t
907 nlm4_nm_lock_4_svc(nlm4_lockargs *argp, nlm4_res *resp, struct svc_req *sr)
908 {
909 
910 	/*
911 	 * Don't allow blocking for non-monitored (nm_lock) calls.
912 	 * These clients don't handle any callbacks, including
913 	 * the granted call we make after a blocking lock.
914 	 * Same reply callback as nlm4_lock_4_svc
915 	 */
916 	argp->block = FALSE;
917 
918 	/* NLM4_NM_LOCK */
919 	nlm_do_lock(argp, resp, sr,
920 	    nlm4_lock_4_reply, NULL,
921 	    NULL); /* indicates non-monitored */
922 
923 	/* above does its own reply */
924 	return (FALSE);
925 }
926 
927 bool_t
928 nlm4_free_all_4_svc(nlm4_notify *argp, void *resp, struct svc_req *sr)
929 {
930 	nlm_do_free_all(argp, resp, sr);
931 	return (TRUE);
932 }
933