This source file includes following definitions.
- get_lockd_grace_period
- grace_ender
- set_grace_period
- restart_grace
- lockd
- create_lockd_listener
- create_lockd_family
- make_socks
- lockd_up_net
- lockd_down_net
- lockd_inetaddr_event
- lockd_inet6addr_event
- lockd_unregister_notifiers
- lockd_svc_exit_thread
- lockd_start_svc
- lockd_create_svc
- lockd_up
- lockd_down
- is_callback
- lockd_authenticate
- param_set_min_max
- lockd_exit_net
- init_nlm
- exit_nlm
1
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15
16 #include <linux/module.h>
17 #include <linux/init.h>
18 #include <linux/sysctl.h>
19 #include <linux/moduleparam.h>
20
21 #include <linux/sched/signal.h>
22 #include <linux/errno.h>
23 #include <linux/in.h>
24 #include <linux/uio.h>
25 #include <linux/smp.h>
26 #include <linux/mutex.h>
27 #include <linux/kthread.h>
28 #include <linux/freezer.h>
29 #include <linux/inetdevice.h>
30
31 #include <linux/sunrpc/types.h>
32 #include <linux/sunrpc/stats.h>
33 #include <linux/sunrpc/clnt.h>
34 #include <linux/sunrpc/svc.h>
35 #include <linux/sunrpc/svcsock.h>
36 #include <linux/sunrpc/svc_xprt.h>
37 #include <net/ip.h>
38 #include <net/addrconf.h>
39 #include <net/ipv6.h>
40 #include <linux/lockd/lockd.h>
41 #include <linux/nfs.h>
42
43 #include "netns.h"
44 #include "procfs.h"
45
46 #define NLMDBG_FACILITY NLMDBG_SVC
47 #define LOCKD_BUFSIZE (1024 + NLMSVC_XDRSIZE)
48 #define ALLOWED_SIGS (sigmask(SIGKILL))
49
50 static struct svc_program nlmsvc_program;
51
52 const struct nlmsvc_binding *nlmsvc_ops;
53 EXPORT_SYMBOL_GPL(nlmsvc_ops);
54
55 static DEFINE_MUTEX(nlmsvc_mutex);
56 static unsigned int nlmsvc_users;
57 static struct task_struct *nlmsvc_task;
58 static struct svc_rqst *nlmsvc_rqst;
59 unsigned long nlmsvc_timeout;
60
61 static atomic_t nlm_ntf_refcnt = ATOMIC_INIT(0);
62 static DECLARE_WAIT_QUEUE_HEAD(nlm_ntf_wq);
63
64 unsigned int lockd_net_id;
65
66
67
68
69
70 static unsigned long nlm_grace_period;
71 static unsigned long nlm_timeout = LOCKD_DFLT_TIMEO;
72 static int nlm_udpport, nlm_tcpport;
73
74
75 static unsigned int nlm_max_connections = 1024;
76
77
78
79
80 static const unsigned long nlm_grace_period_min = 0;
81 static const unsigned long nlm_grace_period_max = 240;
82 static const unsigned long nlm_timeout_min = 3;
83 static const unsigned long nlm_timeout_max = 20;
84 static const int nlm_port_min = 0, nlm_port_max = 65535;
85
86 #ifdef CONFIG_SYSCTL
87 static struct ctl_table_header * nlm_sysctl_table;
88 #endif
89
90 static unsigned long get_lockd_grace_period(void)
91 {
92
93 if (nlm_grace_period)
94 return roundup(nlm_grace_period, nlm_timeout) * HZ;
95 else
96 return nlm_timeout * 5 * HZ;
97 }
98
99 static void grace_ender(struct work_struct *grace)
100 {
101 struct delayed_work *dwork = to_delayed_work(grace);
102 struct lockd_net *ln = container_of(dwork, struct lockd_net,
103 grace_period_end);
104
105 locks_end_grace(&ln->lockd_manager);
106 }
107
108 static void set_grace_period(struct net *net)
109 {
110 unsigned long grace_period = get_lockd_grace_period();
111 struct lockd_net *ln = net_generic(net, lockd_net_id);
112
113 locks_start_grace(net, &ln->lockd_manager);
114 cancel_delayed_work_sync(&ln->grace_period_end);
115 schedule_delayed_work(&ln->grace_period_end, grace_period);
116 }
117
118 static void restart_grace(void)
119 {
120 if (nlmsvc_ops) {
121 struct net *net = &init_net;
122 struct lockd_net *ln = net_generic(net, lockd_net_id);
123
124 cancel_delayed_work_sync(&ln->grace_period_end);
125 locks_end_grace(&ln->lockd_manager);
126 nlmsvc_invalidate_all();
127 set_grace_period(net);
128 }
129 }
130
131
132
133
134 static int
135 lockd(void *vrqstp)
136 {
137 int err = 0;
138 struct svc_rqst *rqstp = vrqstp;
139 struct net *net = &init_net;
140 struct lockd_net *ln = net_generic(net, lockd_net_id);
141
142
143 set_freezable();
144
145
146 allow_signal(SIGKILL);
147
148 dprintk("NFS locking service started (ver " LOCKD_VERSION ").\n");
149
150
151
152
153
154 while (!kthread_should_stop()) {
155 long timeout = MAX_SCHEDULE_TIMEOUT;
156 RPC_IFDEBUG(char buf[RPC_MAX_ADDRBUFLEN]);
157
158
159 rqstp->rq_server->sv_maxconn = nlm_max_connections;
160
161 if (signalled()) {
162 flush_signals(current);
163 restart_grace();
164 continue;
165 }
166
167 timeout = nlmsvc_retry_blocked();
168
169
170
171
172
173 err = svc_recv(rqstp, timeout);
174 if (err == -EAGAIN || err == -EINTR)
175 continue;
176 dprintk("lockd: request from %s\n",
177 svc_print_addr(rqstp, buf, sizeof(buf)));
178
179 svc_process(rqstp);
180 }
181 flush_signals(current);
182 if (nlmsvc_ops)
183 nlmsvc_invalidate_all();
184 nlm_shutdown_hosts();
185 cancel_delayed_work_sync(&ln->grace_period_end);
186 locks_end_grace(&ln->lockd_manager);
187 return 0;
188 }
189
190 static int create_lockd_listener(struct svc_serv *serv, const char *name,
191 struct net *net, const int family,
192 const unsigned short port,
193 const struct cred *cred)
194 {
195 struct svc_xprt *xprt;
196
197 xprt = svc_find_xprt(serv, name, net, family, 0);
198 if (xprt == NULL)
199 return svc_create_xprt(serv, name, net, family, port,
200 SVC_SOCK_DEFAULTS, cred);
201 svc_xprt_put(xprt);
202 return 0;
203 }
204
205 static int create_lockd_family(struct svc_serv *serv, struct net *net,
206 const int family, const struct cred *cred)
207 {
208 int err;
209
210 err = create_lockd_listener(serv, "udp", net, family, nlm_udpport,
211 cred);
212 if (err < 0)
213 return err;
214
215 return create_lockd_listener(serv, "tcp", net, family, nlm_tcpport,
216 cred);
217 }
218
219
220
221
222
223
224
225
226
227
228
229 static int make_socks(struct svc_serv *serv, struct net *net,
230 const struct cred *cred)
231 {
232 static int warned;
233 int err;
234
235 err = create_lockd_family(serv, net, PF_INET, cred);
236 if (err < 0)
237 goto out_err;
238
239 err = create_lockd_family(serv, net, PF_INET6, cred);
240 if (err < 0 && err != -EAFNOSUPPORT)
241 goto out_err;
242
243 warned = 0;
244 return 0;
245
246 out_err:
247 if (warned++ == 0)
248 printk(KERN_WARNING
249 "lockd_up: makesock failed, error=%d\n", err);
250 svc_shutdown_net(serv, net);
251 return err;
252 }
253
254 static int lockd_up_net(struct svc_serv *serv, struct net *net,
255 const struct cred *cred)
256 {
257 struct lockd_net *ln = net_generic(net, lockd_net_id);
258 int error;
259
260 if (ln->nlmsvc_users++)
261 return 0;
262
263 error = svc_bind(serv, net);
264 if (error)
265 goto err_bind;
266
267 error = make_socks(serv, net, cred);
268 if (error < 0)
269 goto err_bind;
270 set_grace_period(net);
271 dprintk("%s: per-net data created; net=%x\n", __func__, net->ns.inum);
272 return 0;
273
274 err_bind:
275 ln->nlmsvc_users--;
276 return error;
277 }
278
279 static void lockd_down_net(struct svc_serv *serv, struct net *net)
280 {
281 struct lockd_net *ln = net_generic(net, lockd_net_id);
282
283 if (ln->nlmsvc_users) {
284 if (--ln->nlmsvc_users == 0) {
285 nlm_shutdown_hosts_net(net);
286 cancel_delayed_work_sync(&ln->grace_period_end);
287 locks_end_grace(&ln->lockd_manager);
288 svc_shutdown_net(serv, net);
289 dprintk("%s: per-net data destroyed; net=%x\n",
290 __func__, net->ns.inum);
291 }
292 } else {
293 pr_err("%s: no users! task=%p, net=%x\n",
294 __func__, nlmsvc_task, net->ns.inum);
295 BUG();
296 }
297 }
298
299 static int lockd_inetaddr_event(struct notifier_block *this,
300 unsigned long event, void *ptr)
301 {
302 struct in_ifaddr *ifa = (struct in_ifaddr *)ptr;
303 struct sockaddr_in sin;
304
305 if ((event != NETDEV_DOWN) ||
306 !atomic_inc_not_zero(&nlm_ntf_refcnt))
307 goto out;
308
309 if (nlmsvc_rqst) {
310 dprintk("lockd_inetaddr_event: removed %pI4\n",
311 &ifa->ifa_local);
312 sin.sin_family = AF_INET;
313 sin.sin_addr.s_addr = ifa->ifa_local;
314 svc_age_temp_xprts_now(nlmsvc_rqst->rq_server,
315 (struct sockaddr *)&sin);
316 }
317 atomic_dec(&nlm_ntf_refcnt);
318 wake_up(&nlm_ntf_wq);
319
320 out:
321 return NOTIFY_DONE;
322 }
323
324 static struct notifier_block lockd_inetaddr_notifier = {
325 .notifier_call = lockd_inetaddr_event,
326 };
327
328 #if IS_ENABLED(CONFIG_IPV6)
329 static int lockd_inet6addr_event(struct notifier_block *this,
330 unsigned long event, void *ptr)
331 {
332 struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)ptr;
333 struct sockaddr_in6 sin6;
334
335 if ((event != NETDEV_DOWN) ||
336 !atomic_inc_not_zero(&nlm_ntf_refcnt))
337 goto out;
338
339 if (nlmsvc_rqst) {
340 dprintk("lockd_inet6addr_event: removed %pI6\n", &ifa->addr);
341 sin6.sin6_family = AF_INET6;
342 sin6.sin6_addr = ifa->addr;
343 if (ipv6_addr_type(&sin6.sin6_addr) & IPV6_ADDR_LINKLOCAL)
344 sin6.sin6_scope_id = ifa->idev->dev->ifindex;
345 svc_age_temp_xprts_now(nlmsvc_rqst->rq_server,
346 (struct sockaddr *)&sin6);
347 }
348 atomic_dec(&nlm_ntf_refcnt);
349 wake_up(&nlm_ntf_wq);
350
351 out:
352 return NOTIFY_DONE;
353 }
354
355 static struct notifier_block lockd_inet6addr_notifier = {
356 .notifier_call = lockd_inet6addr_event,
357 };
358 #endif
359
360 static void lockd_unregister_notifiers(void)
361 {
362 unregister_inetaddr_notifier(&lockd_inetaddr_notifier);
363 #if IS_ENABLED(CONFIG_IPV6)
364 unregister_inet6addr_notifier(&lockd_inet6addr_notifier);
365 #endif
366 wait_event(nlm_ntf_wq, atomic_read(&nlm_ntf_refcnt) == 0);
367 }
368
369 static void lockd_svc_exit_thread(void)
370 {
371 atomic_dec(&nlm_ntf_refcnt);
372 lockd_unregister_notifiers();
373 svc_exit_thread(nlmsvc_rqst);
374 }
375
376 static int lockd_start_svc(struct svc_serv *serv)
377 {
378 int error;
379
380 if (nlmsvc_rqst)
381 return 0;
382
383
384
385
386 nlmsvc_rqst = svc_prepare_thread(serv, &serv->sv_pools[0], NUMA_NO_NODE);
387 if (IS_ERR(nlmsvc_rqst)) {
388 error = PTR_ERR(nlmsvc_rqst);
389 printk(KERN_WARNING
390 "lockd_up: svc_rqst allocation failed, error=%d\n",
391 error);
392 lockd_unregister_notifiers();
393 goto out_rqst;
394 }
395
396 atomic_inc(&nlm_ntf_refcnt);
397 svc_sock_update_bufs(serv);
398 serv->sv_maxconn = nlm_max_connections;
399
400 nlmsvc_task = kthread_create(lockd, nlmsvc_rqst, "%s", serv->sv_name);
401 if (IS_ERR(nlmsvc_task)) {
402 error = PTR_ERR(nlmsvc_task);
403 printk(KERN_WARNING
404 "lockd_up: kthread_run failed, error=%d\n", error);
405 goto out_task;
406 }
407 nlmsvc_rqst->rq_task = nlmsvc_task;
408 wake_up_process(nlmsvc_task);
409
410 dprintk("lockd_up: service started\n");
411 return 0;
412
413 out_task:
414 lockd_svc_exit_thread();
415 nlmsvc_task = NULL;
416 out_rqst:
417 nlmsvc_rqst = NULL;
418 return error;
419 }
420
421 static const struct svc_serv_ops lockd_sv_ops = {
422 .svo_shutdown = svc_rpcb_cleanup,
423 .svo_enqueue_xprt = svc_xprt_do_enqueue,
424 };
425
426 static struct svc_serv *lockd_create_svc(void)
427 {
428 struct svc_serv *serv;
429
430
431
432
433 if (nlmsvc_rqst) {
434
435
436
437
438 svc_get(nlmsvc_rqst->rq_server);
439 return nlmsvc_rqst->rq_server;
440 }
441
442
443
444
445
446 if (nlmsvc_users)
447 printk(KERN_WARNING
448 "lockd_up: no pid, %d users??\n", nlmsvc_users);
449
450 if (!nlm_timeout)
451 nlm_timeout = LOCKD_DFLT_TIMEO;
452 nlmsvc_timeout = nlm_timeout * HZ;
453
454 serv = svc_create(&nlmsvc_program, LOCKD_BUFSIZE, &lockd_sv_ops);
455 if (!serv) {
456 printk(KERN_WARNING "lockd_up: create service failed\n");
457 return ERR_PTR(-ENOMEM);
458 }
459 register_inetaddr_notifier(&lockd_inetaddr_notifier);
460 #if IS_ENABLED(CONFIG_IPV6)
461 register_inet6addr_notifier(&lockd_inet6addr_notifier);
462 #endif
463 dprintk("lockd_up: service created\n");
464 return serv;
465 }
466
467
468
469
470 int lockd_up(struct net *net, const struct cred *cred)
471 {
472 struct svc_serv *serv;
473 int error;
474
475 mutex_lock(&nlmsvc_mutex);
476
477 serv = lockd_create_svc();
478 if (IS_ERR(serv)) {
479 error = PTR_ERR(serv);
480 goto err_create;
481 }
482
483 error = lockd_up_net(serv, net, cred);
484 if (error < 0) {
485 lockd_unregister_notifiers();
486 goto err_put;
487 }
488
489 error = lockd_start_svc(serv);
490 if (error < 0) {
491 lockd_down_net(serv, net);
492 goto err_put;
493 }
494 nlmsvc_users++;
495
496
497
498
499 err_put:
500 svc_destroy(serv);
501 err_create:
502 mutex_unlock(&nlmsvc_mutex);
503 return error;
504 }
505 EXPORT_SYMBOL_GPL(lockd_up);
506
507
508
509
510 void
511 lockd_down(struct net *net)
512 {
513 mutex_lock(&nlmsvc_mutex);
514 lockd_down_net(nlmsvc_rqst->rq_server, net);
515 if (nlmsvc_users) {
516 if (--nlmsvc_users)
517 goto out;
518 } else {
519 printk(KERN_ERR "lockd_down: no users! task=%p\n",
520 nlmsvc_task);
521 BUG();
522 }
523
524 if (!nlmsvc_task) {
525 printk(KERN_ERR "lockd_down: no lockd running.\n");
526 BUG();
527 }
528 kthread_stop(nlmsvc_task);
529 dprintk("lockd_down: service stopped\n");
530 lockd_svc_exit_thread();
531 dprintk("lockd_down: service destroyed\n");
532 nlmsvc_task = NULL;
533 nlmsvc_rqst = NULL;
534 out:
535 mutex_unlock(&nlmsvc_mutex);
536 }
537 EXPORT_SYMBOL_GPL(lockd_down);
538
539 #ifdef CONFIG_SYSCTL
540
541
542
543
544
545 static struct ctl_table nlm_sysctls[] = {
546 {
547 .procname = "nlm_grace_period",
548 .data = &nlm_grace_period,
549 .maxlen = sizeof(unsigned long),
550 .mode = 0644,
551 .proc_handler = proc_doulongvec_minmax,
552 .extra1 = (unsigned long *) &nlm_grace_period_min,
553 .extra2 = (unsigned long *) &nlm_grace_period_max,
554 },
555 {
556 .procname = "nlm_timeout",
557 .data = &nlm_timeout,
558 .maxlen = sizeof(unsigned long),
559 .mode = 0644,
560 .proc_handler = proc_doulongvec_minmax,
561 .extra1 = (unsigned long *) &nlm_timeout_min,
562 .extra2 = (unsigned long *) &nlm_timeout_max,
563 },
564 {
565 .procname = "nlm_udpport",
566 .data = &nlm_udpport,
567 .maxlen = sizeof(int),
568 .mode = 0644,
569 .proc_handler = proc_dointvec_minmax,
570 .extra1 = (int *) &nlm_port_min,
571 .extra2 = (int *) &nlm_port_max,
572 },
573 {
574 .procname = "nlm_tcpport",
575 .data = &nlm_tcpport,
576 .maxlen = sizeof(int),
577 .mode = 0644,
578 .proc_handler = proc_dointvec_minmax,
579 .extra1 = (int *) &nlm_port_min,
580 .extra2 = (int *) &nlm_port_max,
581 },
582 {
583 .procname = "nsm_use_hostnames",
584 .data = &nsm_use_hostnames,
585 .maxlen = sizeof(int),
586 .mode = 0644,
587 .proc_handler = proc_dointvec,
588 },
589 {
590 .procname = "nsm_local_state",
591 .data = &nsm_local_state,
592 .maxlen = sizeof(int),
593 .mode = 0644,
594 .proc_handler = proc_dointvec,
595 },
596 { }
597 };
598
599 static struct ctl_table nlm_sysctl_dir[] = {
600 {
601 .procname = "nfs",
602 .mode = 0555,
603 .child = nlm_sysctls,
604 },
605 { }
606 };
607
608 static struct ctl_table nlm_sysctl_root[] = {
609 {
610 .procname = "fs",
611 .mode = 0555,
612 .child = nlm_sysctl_dir,
613 },
614 { }
615 };
616
617 #endif
618
619
620
621
622
623 #define param_set_min_max(name, type, which_strtol, min, max) \
624 static int param_set_##name(const char *val, const struct kernel_param *kp) \
625 { \
626 char *endp; \
627 __typeof__(type) num = which_strtol(val, &endp, 0); \
628 if (endp == val || *endp || num < (min) || num > (max)) \
629 return -EINVAL; \
630 *((type *) kp->arg) = num; \
631 return 0; \
632 }
633
634 static inline int is_callback(u32 proc)
635 {
636 return proc == NLMPROC_GRANTED
637 || proc == NLMPROC_GRANTED_MSG
638 || proc == NLMPROC_TEST_RES
639 || proc == NLMPROC_LOCK_RES
640 || proc == NLMPROC_CANCEL_RES
641 || proc == NLMPROC_UNLOCK_RES
642 || proc == NLMPROC_NSM_NOTIFY;
643 }
644
645
646 static int lockd_authenticate(struct svc_rqst *rqstp)
647 {
648 rqstp->rq_client = NULL;
649 switch (rqstp->rq_authop->flavour) {
650 case RPC_AUTH_NULL:
651 case RPC_AUTH_UNIX:
652 if (rqstp->rq_proc == 0)
653 return SVC_OK;
654 if (is_callback(rqstp->rq_proc)) {
655
656
657
658 return SVC_OK;
659 }
660 return svc_set_client(rqstp);
661 }
662 return SVC_DENIED;
663 }
664
665
666 param_set_min_max(port, int, simple_strtol, 0, 65535)
667 param_set_min_max(grace_period, unsigned long, simple_strtoul,
668 nlm_grace_period_min, nlm_grace_period_max)
669 param_set_min_max(timeout, unsigned long, simple_strtoul,
670 nlm_timeout_min, nlm_timeout_max)
671
672 MODULE_AUTHOR("Olaf Kirch <okir@monad.swb.de>");
673 MODULE_DESCRIPTION("NFS file locking service version " LOCKD_VERSION ".");
674 MODULE_LICENSE("GPL");
675
676 module_param_call(nlm_grace_period, param_set_grace_period, param_get_ulong,
677 &nlm_grace_period, 0644);
678 module_param_call(nlm_timeout, param_set_timeout, param_get_ulong,
679 &nlm_timeout, 0644);
680 module_param_call(nlm_udpport, param_set_port, param_get_int,
681 &nlm_udpport, 0644);
682 module_param_call(nlm_tcpport, param_set_port, param_get_int,
683 &nlm_tcpport, 0644);
684 module_param(nsm_use_hostnames, bool, 0644);
685 module_param(nlm_max_connections, uint, 0644);
686
687 static int lockd_init_net(struct net *net)
688 {
689 struct lockd_net *ln = net_generic(net, lockd_net_id);
690
691 INIT_DELAYED_WORK(&ln->grace_period_end, grace_ender);
692 INIT_LIST_HEAD(&ln->lockd_manager.list);
693 ln->lockd_manager.block_opens = false;
694 INIT_LIST_HEAD(&ln->nsm_handles);
695 return 0;
696 }
697
698 static void lockd_exit_net(struct net *net)
699 {
700 struct lockd_net *ln = net_generic(net, lockd_net_id);
701
702 WARN_ONCE(!list_empty(&ln->lockd_manager.list),
703 "net %x %s: lockd_manager.list is not empty\n",
704 net->ns.inum, __func__);
705 WARN_ONCE(!list_empty(&ln->nsm_handles),
706 "net %x %s: nsm_handles list is not empty\n",
707 net->ns.inum, __func__);
708 WARN_ONCE(delayed_work_pending(&ln->grace_period_end),
709 "net %x %s: grace_period_end was not cancelled\n",
710 net->ns.inum, __func__);
711 }
712
713 static struct pernet_operations lockd_net_ops = {
714 .init = lockd_init_net,
715 .exit = lockd_exit_net,
716 .id = &lockd_net_id,
717 .size = sizeof(struct lockd_net),
718 };
719
720
721
722
723
724
725 static int __init init_nlm(void)
726 {
727 int err;
728
729 #ifdef CONFIG_SYSCTL
730 err = -ENOMEM;
731 nlm_sysctl_table = register_sysctl_table(nlm_sysctl_root);
732 if (nlm_sysctl_table == NULL)
733 goto err_sysctl;
734 #endif
735 err = register_pernet_subsys(&lockd_net_ops);
736 if (err)
737 goto err_pernet;
738
739 err = lockd_create_procfs();
740 if (err)
741 goto err_procfs;
742
743 return 0;
744
745 err_procfs:
746 unregister_pernet_subsys(&lockd_net_ops);
747 err_pernet:
748 #ifdef CONFIG_SYSCTL
749 unregister_sysctl_table(nlm_sysctl_table);
750 err_sysctl:
751 #endif
752 return err;
753 }
754
755 static void __exit exit_nlm(void)
756 {
757
758 nlm_shutdown_hosts();
759 lockd_remove_procfs();
760 unregister_pernet_subsys(&lockd_net_ops);
761 #ifdef CONFIG_SYSCTL
762 unregister_sysctl_table(nlm_sysctl_table);
763 #endif
764 }
765
766 module_init(init_nlm);
767 module_exit(exit_nlm);
768
769
770
771
772 static unsigned int nlmsvc_version1_count[17];
773 static const struct svc_version nlmsvc_version1 = {
774 .vs_vers = 1,
775 .vs_nproc = 17,
776 .vs_proc = nlmsvc_procedures,
777 .vs_count = nlmsvc_version1_count,
778 .vs_xdrsize = NLMSVC_XDRSIZE,
779 };
780 static unsigned int nlmsvc_version3_count[24];
781 static const struct svc_version nlmsvc_version3 = {
782 .vs_vers = 3,
783 .vs_nproc = 24,
784 .vs_proc = nlmsvc_procedures,
785 .vs_count = nlmsvc_version3_count,
786 .vs_xdrsize = NLMSVC_XDRSIZE,
787 };
788 #ifdef CONFIG_LOCKD_V4
789 static unsigned int nlmsvc_version4_count[24];
790 static const struct svc_version nlmsvc_version4 = {
791 .vs_vers = 4,
792 .vs_nproc = 24,
793 .vs_proc = nlmsvc_procedures4,
794 .vs_count = nlmsvc_version4_count,
795 .vs_xdrsize = NLMSVC_XDRSIZE,
796 };
797 #endif
798 static const struct svc_version *nlmsvc_version[] = {
799 [1] = &nlmsvc_version1,
800 [3] = &nlmsvc_version3,
801 #ifdef CONFIG_LOCKD_V4
802 [4] = &nlmsvc_version4,
803 #endif
804 };
805
806 static struct svc_stat nlmsvc_stats;
807
808 #define NLM_NRVERS ARRAY_SIZE(nlmsvc_version)
809 static struct svc_program nlmsvc_program = {
810 .pg_prog = NLM_PROGRAM,
811 .pg_nvers = NLM_NRVERS,
812 .pg_vers = nlmsvc_version,
813 .pg_name = "lockd",
814 .pg_class = "nfsd",
815 .pg_stats = &nlmsvc_stats,
816 .pg_authenticate = &lockd_authenticate,
817 .pg_init_request = svc_generic_init_request,
818 .pg_rpcbind_set = svc_generic_rpcbind_set,
819 };