Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * linux/fs/lockd/svc.c | |
3 | * | |
4 | * This is the central lockd service. | |
5 | * | |
6 | * FIXME: Separate the lockd NFS server functionality from the lockd NFS | |
7 | * client functionality. Oh why didn't Sun create two separate | |
8 | * services in the first place? | |
9 | * | |
10 | * Authors: Olaf Kirch (okir@monad.swb.de) | |
11 | * | |
12 | * Copyright (C) 1995, 1996 Olaf Kirch <okir@monad.swb.de> | |
13 | */ | |
14 | ||
1da177e4 LT |
15 | #include <linux/module.h> |
16 | #include <linux/init.h> | |
17 | #include <linux/sysctl.h> | |
18 | #include <linux/moduleparam.h> | |
19 | ||
20 | #include <linux/sched.h> | |
21 | #include <linux/errno.h> | |
22 | #include <linux/in.h> | |
23 | #include <linux/uio.h> | |
24 | #include <linux/slab.h> | |
25 | #include <linux/smp.h> | |
26 | #include <linux/smp_lock.h> | |
353ab6e9 | 27 | #include <linux/mutex.h> |
d751a7cd | 28 | #include <linux/kthread.h> |
83144186 | 29 | #include <linux/freezer.h> |
1da177e4 LT |
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> | |
24e36663 | 36 | #include <net/ip.h> |
1da177e4 | 37 | #include <linux/lockd/lockd.h> |
460f5cac | 38 | #include <linux/lockd/sm_inter.h> |
1da177e4 LT |
39 | #include <linux/nfs.h> |
40 | ||
41 | #define NLMDBG_FACILITY NLMDBG_SVC | |
42 | #define LOCKD_BUFSIZE (1024 + NLMSVC_XDRSIZE) | |
43 | #define ALLOWED_SIGS (sigmask(SIGKILL)) | |
44 | ||
45 | static struct svc_program nlmsvc_program; | |
46 | ||
47 | struct nlmsvc_binding * nlmsvc_ops; | |
48 | EXPORT_SYMBOL(nlmsvc_ops); | |
49 | ||
353ab6e9 | 50 | static DEFINE_MUTEX(nlmsvc_mutex); |
1da177e4 | 51 | static unsigned int nlmsvc_users; |
d751a7cd | 52 | static struct task_struct *nlmsvc_task; |
24e36663 | 53 | static struct svc_serv *nlmsvc_serv; |
1da177e4 LT |
54 | int nlmsvc_grace_period; |
55 | unsigned long nlmsvc_timeout; | |
56 | ||
1da177e4 LT |
57 | /* |
58 | * These can be set at insmod time (useful for NFS as root filesystem), | |
59 | * and also changed through the sysctl interface. -- Jamie Lokier, Aug 2003 | |
60 | */ | |
61 | static unsigned long nlm_grace_period; | |
62 | static unsigned long nlm_timeout = LOCKD_DFLT_TIMEO; | |
63 | static int nlm_udpport, nlm_tcpport; | |
abd1f500 | 64 | int nsm_use_hostnames = 0; |
1da177e4 LT |
65 | |
66 | /* | |
67 | * Constants needed for the sysctl interface. | |
68 | */ | |
69 | static const unsigned long nlm_grace_period_min = 0; | |
70 | static const unsigned long nlm_grace_period_max = 240; | |
71 | static const unsigned long nlm_timeout_min = 3; | |
72 | static const unsigned long nlm_timeout_max = 20; | |
73 | static const int nlm_port_min = 0, nlm_port_max = 65535; | |
74 | ||
75 | static struct ctl_table_header * nlm_sysctl_table; | |
76 | ||
9a8db97e | 77 | static unsigned long get_lockd_grace_period(void) |
1da177e4 | 78 | { |
1da177e4 LT |
79 | /* Note: nlm_timeout should always be nonzero */ |
80 | if (nlm_grace_period) | |
9a8db97e | 81 | return roundup(nlm_grace_period, nlm_timeout) * HZ; |
1da177e4 | 82 | else |
9a8db97e ME |
83 | return nlm_timeout * 5 * HZ; |
84 | } | |
85 | ||
86 | unsigned long get_nfs_grace_period(void) | |
87 | { | |
88 | unsigned long lockdgrace = get_lockd_grace_period(); | |
89 | unsigned long nfsdgrace = 0; | |
90 | ||
91 | if (nlmsvc_ops) | |
92 | nfsdgrace = nlmsvc_ops->get_grace_period(); | |
93 | ||
94 | return max(lockdgrace, nfsdgrace); | |
95 | } | |
96 | EXPORT_SYMBOL(get_nfs_grace_period); | |
97 | ||
98 | static unsigned long set_grace_period(void) | |
99 | { | |
1da177e4 | 100 | nlmsvc_grace_period = 1; |
9a8db97e | 101 | return get_nfs_grace_period() + jiffies; |
1da177e4 LT |
102 | } |
103 | ||
104 | static inline void clear_grace_period(void) | |
105 | { | |
106 | nlmsvc_grace_period = 0; | |
107 | } | |
108 | ||
109 | /* | |
110 | * This is the lockd kernel thread | |
111 | */ | |
d751a7cd JL |
112 | static int |
113 | lockd(void *vrqstp) | |
1da177e4 | 114 | { |
1da177e4 | 115 | int err = 0; |
d751a7cd | 116 | struct svc_rqst *rqstp = vrqstp; |
1da177e4 LT |
117 | unsigned long grace_period_expire; |
118 | ||
d751a7cd | 119 | /* try_to_freeze() is called from svc_recv() */ |
83144186 | 120 | set_freezable(); |
1da177e4 | 121 | |
d751a7cd | 122 | /* Allow SIGKILL to tell lockd to drop all of its locks */ |
1da177e4 LT |
123 | allow_signal(SIGKILL); |
124 | ||
1da177e4 LT |
125 | dprintk("NFS locking service started (ver " LOCKD_VERSION ").\n"); |
126 | ||
d751a7cd JL |
127 | /* |
128 | * FIXME: it would be nice if lockd didn't spend its entire life | |
129 | * running under the BKL. At the very least, it would be good to | |
130 | * have someone clarify what it's intended to protect here. I've | |
131 | * seen some handwavy posts about posix locking needing to be | |
132 | * done under the BKL, but it's far from clear. | |
133 | */ | |
134 | lock_kernel(); | |
135 | ||
1da177e4 LT |
136 | if (!nlm_timeout) |
137 | nlm_timeout = LOCKD_DFLT_TIMEO; | |
138 | nlmsvc_timeout = nlm_timeout * HZ; | |
139 | ||
140 | grace_period_expire = set_grace_period(); | |
141 | ||
142 | /* | |
143 | * The main request loop. We don't terminate until the last | |
d751a7cd | 144 | * NFS mount or NFS daemon has gone away. |
1da177e4 | 145 | */ |
d751a7cd | 146 | while (!kthread_should_stop()) { |
1da177e4 | 147 | long timeout = MAX_SCHEDULE_TIMEOUT; |
5216a8e7 | 148 | RPC_IFDEBUG(char buf[RPC_MAX_ADDRBUFLEN]); |
1da177e4 LT |
149 | |
150 | if (signalled()) { | |
151 | flush_signals(current); | |
152 | if (nlmsvc_ops) { | |
153 | nlmsvc_invalidate_all(); | |
154 | grace_period_expire = set_grace_period(); | |
155 | } | |
d751a7cd | 156 | continue; |
1da177e4 LT |
157 | } |
158 | ||
159 | /* | |
160 | * Retry any blocked locks that have been notified by | |
161 | * the VFS. Don't do this during grace period. | |
162 | * (Theoretically, there shouldn't even be blocked locks | |
163 | * during grace period). | |
164 | */ | |
165 | if (!nlmsvc_grace_period) { | |
166 | timeout = nlmsvc_retry_blocked(); | |
167 | } else if (time_before(grace_period_expire, jiffies)) | |
168 | clear_grace_period(); | |
169 | ||
170 | /* | |
171 | * Find a socket with data available and call its | |
172 | * recvfrom routine. | |
173 | */ | |
6fb2b47f | 174 | err = svc_recv(rqstp, timeout); |
1da177e4 LT |
175 | if (err == -EAGAIN || err == -EINTR) |
176 | continue; | |
177 | if (err < 0) { | |
178 | printk(KERN_WARNING | |
179 | "lockd: terminating on error %d\n", | |
180 | -err); | |
181 | break; | |
182 | } | |
183 | ||
ad06e4bd CL |
184 | dprintk("lockd: request from %s\n", |
185 | svc_print_addr(rqstp, buf, sizeof(buf))); | |
1da177e4 | 186 | |
6fb2b47f | 187 | svc_process(rqstp); |
1da177e4 LT |
188 | } |
189 | ||
2bd61579 | 190 | flush_signals(current); |
d751a7cd JL |
191 | if (nlmsvc_ops) |
192 | nlmsvc_invalidate_all(); | |
193 | nlm_shutdown_hosts(); | |
2bd61579 | 194 | |
d751a7cd JL |
195 | unlock_kernel(); |
196 | ||
197 | nlmsvc_task = NULL; | |
198 | nlmsvc_serv = NULL; | |
46be925f | 199 | |
1da177e4 LT |
200 | /* Exit the RPC thread */ |
201 | svc_exit_thread(rqstp); | |
202 | ||
d751a7cd | 203 | return 0; |
1da177e4 LT |
204 | } |
205 | ||
482fb94e CL |
206 | /* |
207 | * Make any sockets that are needed but not present. | |
208 | * If nlm_udpport or nlm_tcpport were set as module | |
209 | * options, make those sockets unconditionally | |
210 | */ | |
24e36663 N |
211 | static int make_socks(struct svc_serv *serv, int proto) |
212 | { | |
482fb94e | 213 | static int warned; |
a217813f | 214 | struct svc_xprt *xprt; |
24e36663 | 215 | int err = 0; |
482fb94e | 216 | |
a217813f TT |
217 | if (proto == IPPROTO_UDP || nlm_udpport) { |
218 | xprt = svc_find_xprt(serv, "udp", 0, 0); | |
219 | if (!xprt) | |
d7c9f1ed TT |
220 | err = svc_create_xprt(serv, "udp", nlm_udpport, |
221 | SVC_SOCK_DEFAULTS); | |
a217813f TT |
222 | else |
223 | svc_xprt_put(xprt); | |
224 | } | |
225 | if (err >= 0 && (proto == IPPROTO_TCP || nlm_tcpport)) { | |
226 | xprt = svc_find_xprt(serv, "tcp", 0, 0); | |
227 | if (!xprt) | |
d7c9f1ed TT |
228 | err = svc_create_xprt(serv, "tcp", nlm_tcpport, |
229 | SVC_SOCK_DEFAULTS); | |
a217813f TT |
230 | else |
231 | svc_xprt_put(xprt); | |
232 | } | |
482fb94e | 233 | if (err >= 0) { |
7dcf91ec | 234 | warned = 0; |
482fb94e CL |
235 | err = 0; |
236 | } else if (warned++ == 0) | |
7dcf91ec N |
237 | printk(KERN_WARNING |
238 | "lockd_up: makesock failed, error=%d\n", err); | |
24e36663 N |
239 | return err; |
240 | } | |
241 | ||
1da177e4 LT |
242 | /* |
243 | * Bring up the lockd process if it's not already up. | |
244 | */ | |
245 | int | |
24e36663 | 246 | lockd_up(int proto) /* Maybe add a 'family' option when IPv6 is supported ?? */ |
1da177e4 | 247 | { |
d751a7cd JL |
248 | struct svc_serv *serv; |
249 | struct svc_rqst *rqstp; | |
250 | int error = 0; | |
1da177e4 | 251 | |
353ab6e9 | 252 | mutex_lock(&nlmsvc_mutex); |
1da177e4 LT |
253 | /* |
254 | * Check whether we're already up and running. | |
255 | */ | |
d751a7cd | 256 | if (nlmsvc_serv) { |
4a3ae42d N |
257 | if (proto) |
258 | error = make_socks(nlmsvc_serv, proto); | |
1da177e4 | 259 | goto out; |
24e36663 | 260 | } |
1da177e4 LT |
261 | |
262 | /* | |
263 | * Sanity check: if there's no pid, | |
264 | * we should be the first user ... | |
265 | */ | |
4a3ae42d | 266 | if (nlmsvc_users) |
1da177e4 LT |
267 | printk(KERN_WARNING |
268 | "lockd_up: no pid, %d users??\n", nlmsvc_users); | |
269 | ||
270 | error = -ENOMEM; | |
bc591ccf | 271 | serv = svc_create(&nlmsvc_program, LOCKD_BUFSIZE, NULL); |
1da177e4 LT |
272 | if (!serv) { |
273 | printk(KERN_WARNING "lockd_up: create service failed\n"); | |
274 | goto out; | |
275 | } | |
276 | ||
7dcf91ec | 277 | if ((error = make_socks(serv, proto)) < 0) |
1da177e4 | 278 | goto destroy_and_out; |
1da177e4 LT |
279 | |
280 | /* | |
281 | * Create the kernel thread and wait for it to start. | |
282 | */ | |
d751a7cd JL |
283 | rqstp = svc_prepare_thread(serv, &serv->sv_pools[0]); |
284 | if (IS_ERR(rqstp)) { | |
285 | error = PTR_ERR(rqstp); | |
286 | printk(KERN_WARNING | |
287 | "lockd_up: svc_rqst allocation failed, error=%d\n", | |
288 | error); | |
289 | goto destroy_and_out; | |
290 | } | |
291 | ||
292 | svc_sock_update_bufs(serv); | |
293 | nlmsvc_serv = rqstp->rq_server; | |
294 | ||
295 | nlmsvc_task = kthread_run(lockd, rqstp, serv->sv_name); | |
296 | if (IS_ERR(nlmsvc_task)) { | |
297 | error = PTR_ERR(nlmsvc_task); | |
298 | nlmsvc_task = NULL; | |
299 | nlmsvc_serv = NULL; | |
1da177e4 | 300 | printk(KERN_WARNING |
d751a7cd JL |
301 | "lockd_up: kthread_run failed, error=%d\n", error); |
302 | svc_exit_thread(rqstp); | |
1da177e4 LT |
303 | goto destroy_and_out; |
304 | } | |
1da177e4 LT |
305 | |
306 | /* | |
307 | * Note: svc_serv structures have an initial use count of 1, | |
308 | * so we exit through here on both success and failure. | |
309 | */ | |
310 | destroy_and_out: | |
311 | svc_destroy(serv); | |
312 | out: | |
4a3ae42d N |
313 | if (!error) |
314 | nlmsvc_users++; | |
353ab6e9 | 315 | mutex_unlock(&nlmsvc_mutex); |
1da177e4 LT |
316 | return error; |
317 | } | |
318 | EXPORT_SYMBOL(lockd_up); | |
319 | ||
320 | /* | |
321 | * Decrement the user count and bring down lockd if we're the last. | |
322 | */ | |
323 | void | |
324 | lockd_down(void) | |
325 | { | |
353ab6e9 | 326 | mutex_lock(&nlmsvc_mutex); |
1da177e4 LT |
327 | if (nlmsvc_users) { |
328 | if (--nlmsvc_users) | |
329 | goto out; | |
d751a7cd JL |
330 | } else { |
331 | printk(KERN_ERR "lockd_down: no users! task=%p\n", | |
332 | nlmsvc_task); | |
333 | BUG(); | |
1da177e4 | 334 | } |
1da177e4 | 335 | |
d751a7cd JL |
336 | if (!nlmsvc_task) { |
337 | printk(KERN_ERR "lockd_down: no lockd running.\n"); | |
338 | BUG(); | |
1da177e4 | 339 | } |
d751a7cd | 340 | kthread_stop(nlmsvc_task); |
1da177e4 | 341 | out: |
353ab6e9 | 342 | mutex_unlock(&nlmsvc_mutex); |
1da177e4 LT |
343 | } |
344 | EXPORT_SYMBOL(lockd_down); | |
345 | ||
346 | /* | |
347 | * Sysctl parameters (same as module parameters, different interface). | |
348 | */ | |
349 | ||
1da177e4 LT |
350 | static ctl_table nlm_sysctls[] = { |
351 | { | |
352 | .ctl_name = CTL_UNNUMBERED, | |
353 | .procname = "nlm_grace_period", | |
354 | .data = &nlm_grace_period, | |
7ee91ec1 | 355 | .maxlen = sizeof(unsigned long), |
1da177e4 LT |
356 | .mode = 0644, |
357 | .proc_handler = &proc_doulongvec_minmax, | |
358 | .extra1 = (unsigned long *) &nlm_grace_period_min, | |
359 | .extra2 = (unsigned long *) &nlm_grace_period_max, | |
360 | }, | |
361 | { | |
362 | .ctl_name = CTL_UNNUMBERED, | |
363 | .procname = "nlm_timeout", | |
364 | .data = &nlm_timeout, | |
7ee91ec1 | 365 | .maxlen = sizeof(unsigned long), |
1da177e4 LT |
366 | .mode = 0644, |
367 | .proc_handler = &proc_doulongvec_minmax, | |
368 | .extra1 = (unsigned long *) &nlm_timeout_min, | |
369 | .extra2 = (unsigned long *) &nlm_timeout_max, | |
370 | }, | |
371 | { | |
372 | .ctl_name = CTL_UNNUMBERED, | |
373 | .procname = "nlm_udpport", | |
374 | .data = &nlm_udpport, | |
375 | .maxlen = sizeof(int), | |
376 | .mode = 0644, | |
377 | .proc_handler = &proc_dointvec_minmax, | |
378 | .extra1 = (int *) &nlm_port_min, | |
379 | .extra2 = (int *) &nlm_port_max, | |
380 | }, | |
381 | { | |
382 | .ctl_name = CTL_UNNUMBERED, | |
383 | .procname = "nlm_tcpport", | |
384 | .data = &nlm_tcpport, | |
385 | .maxlen = sizeof(int), | |
386 | .mode = 0644, | |
387 | .proc_handler = &proc_dointvec_minmax, | |
388 | .extra1 = (int *) &nlm_port_min, | |
389 | .extra2 = (int *) &nlm_port_max, | |
390 | }, | |
abd1f500 OK |
391 | { |
392 | .ctl_name = CTL_UNNUMBERED, | |
393 | .procname = "nsm_use_hostnames", | |
394 | .data = &nsm_use_hostnames, | |
395 | .maxlen = sizeof(int), | |
396 | .mode = 0644, | |
397 | .proc_handler = &proc_dointvec, | |
398 | }, | |
460f5cac OK |
399 | { |
400 | .ctl_name = CTL_UNNUMBERED, | |
401 | .procname = "nsm_local_state", | |
402 | .data = &nsm_local_state, | |
403 | .maxlen = sizeof(int), | |
404 | .mode = 0644, | |
405 | .proc_handler = &proc_dointvec, | |
406 | }, | |
1da177e4 LT |
407 | { .ctl_name = 0 } |
408 | }; | |
409 | ||
410 | static ctl_table nlm_sysctl_dir[] = { | |
411 | { | |
412 | .ctl_name = CTL_UNNUMBERED, | |
413 | .procname = "nfs", | |
414 | .mode = 0555, | |
415 | .child = nlm_sysctls, | |
416 | }, | |
417 | { .ctl_name = 0 } | |
418 | }; | |
419 | ||
420 | static ctl_table nlm_sysctl_root[] = { | |
421 | { | |
422 | .ctl_name = CTL_FS, | |
423 | .procname = "fs", | |
424 | .mode = 0555, | |
425 | .child = nlm_sysctl_dir, | |
426 | }, | |
427 | { .ctl_name = 0 } | |
428 | }; | |
429 | ||
430 | /* | |
405ae7d3 | 431 | * Module (and sysfs) parameters. |
1da177e4 LT |
432 | */ |
433 | ||
434 | #define param_set_min_max(name, type, which_strtol, min, max) \ | |
435 | static int param_set_##name(const char *val, struct kernel_param *kp) \ | |
436 | { \ | |
437 | char *endp; \ | |
438 | __typeof__(type) num = which_strtol(val, &endp, 0); \ | |
439 | if (endp == val || *endp || num < (min) || num > (max)) \ | |
440 | return -EINVAL; \ | |
441 | *((int *) kp->arg) = num; \ | |
442 | return 0; \ | |
443 | } | |
444 | ||
445 | static inline int is_callback(u32 proc) | |
446 | { | |
447 | return proc == NLMPROC_GRANTED | |
448 | || proc == NLMPROC_GRANTED_MSG | |
449 | || proc == NLMPROC_TEST_RES | |
450 | || proc == NLMPROC_LOCK_RES | |
451 | || proc == NLMPROC_CANCEL_RES | |
452 | || proc == NLMPROC_UNLOCK_RES | |
453 | || proc == NLMPROC_NSM_NOTIFY; | |
454 | } | |
455 | ||
456 | ||
457 | static int lockd_authenticate(struct svc_rqst *rqstp) | |
458 | { | |
459 | rqstp->rq_client = NULL; | |
460 | switch (rqstp->rq_authop->flavour) { | |
461 | case RPC_AUTH_NULL: | |
462 | case RPC_AUTH_UNIX: | |
463 | if (rqstp->rq_proc == 0) | |
464 | return SVC_OK; | |
465 | if (is_callback(rqstp->rq_proc)) { | |
466 | /* Leave it to individual procedures to | |
467 | * call nlmsvc_lookup_host(rqstp) | |
468 | */ | |
469 | return SVC_OK; | |
470 | } | |
471 | return svc_set_client(rqstp); | |
472 | } | |
473 | return SVC_DENIED; | |
474 | } | |
475 | ||
476 | ||
477 | param_set_min_max(port, int, simple_strtol, 0, 65535) | |
478 | param_set_min_max(grace_period, unsigned long, simple_strtoul, | |
479 | nlm_grace_period_min, nlm_grace_period_max) | |
480 | param_set_min_max(timeout, unsigned long, simple_strtoul, | |
481 | nlm_timeout_min, nlm_timeout_max) | |
482 | ||
483 | MODULE_AUTHOR("Olaf Kirch <okir@monad.swb.de>"); | |
484 | MODULE_DESCRIPTION("NFS file locking service version " LOCKD_VERSION "."); | |
485 | MODULE_LICENSE("GPL"); | |
486 | ||
487 | module_param_call(nlm_grace_period, param_set_grace_period, param_get_ulong, | |
488 | &nlm_grace_period, 0644); | |
489 | module_param_call(nlm_timeout, param_set_timeout, param_get_ulong, | |
490 | &nlm_timeout, 0644); | |
491 | module_param_call(nlm_udpport, param_set_port, param_get_int, | |
492 | &nlm_udpport, 0644); | |
493 | module_param_call(nlm_tcpport, param_set_port, param_get_int, | |
494 | &nlm_tcpport, 0644); | |
abd1f500 | 495 | module_param(nsm_use_hostnames, bool, 0644); |
1da177e4 LT |
496 | |
497 | /* | |
498 | * Initialising and terminating the module. | |
499 | */ | |
500 | ||
501 | static int __init init_nlm(void) | |
502 | { | |
0b4d4147 | 503 | nlm_sysctl_table = register_sysctl_table(nlm_sysctl_root); |
1da177e4 LT |
504 | return nlm_sysctl_table ? 0 : -ENOMEM; |
505 | } | |
506 | ||
507 | static void __exit exit_nlm(void) | |
508 | { | |
509 | /* FIXME: delete all NLM clients */ | |
510 | nlm_shutdown_hosts(); | |
511 | unregister_sysctl_table(nlm_sysctl_table); | |
512 | } | |
513 | ||
514 | module_init(init_nlm); | |
515 | module_exit(exit_nlm); | |
516 | ||
517 | /* | |
518 | * Define NLM program and procedures | |
519 | */ | |
520 | static struct svc_version nlmsvc_version1 = { | |
521 | .vs_vers = 1, | |
522 | .vs_nproc = 17, | |
523 | .vs_proc = nlmsvc_procedures, | |
524 | .vs_xdrsize = NLMSVC_XDRSIZE, | |
525 | }; | |
526 | static struct svc_version nlmsvc_version3 = { | |
527 | .vs_vers = 3, | |
528 | .vs_nproc = 24, | |
529 | .vs_proc = nlmsvc_procedures, | |
530 | .vs_xdrsize = NLMSVC_XDRSIZE, | |
531 | }; | |
532 | #ifdef CONFIG_LOCKD_V4 | |
533 | static struct svc_version nlmsvc_version4 = { | |
534 | .vs_vers = 4, | |
535 | .vs_nproc = 24, | |
536 | .vs_proc = nlmsvc_procedures4, | |
537 | .vs_xdrsize = NLMSVC_XDRSIZE, | |
538 | }; | |
539 | #endif | |
540 | static struct svc_version * nlmsvc_version[] = { | |
541 | [1] = &nlmsvc_version1, | |
542 | [3] = &nlmsvc_version3, | |
543 | #ifdef CONFIG_LOCKD_V4 | |
544 | [4] = &nlmsvc_version4, | |
545 | #endif | |
546 | }; | |
547 | ||
548 | static struct svc_stat nlmsvc_stats; | |
549 | ||
e8c96f8c | 550 | #define NLM_NRVERS ARRAY_SIZE(nlmsvc_version) |
1da177e4 LT |
551 | static struct svc_program nlmsvc_program = { |
552 | .pg_prog = NLM_PROGRAM, /* program number */ | |
553 | .pg_nvers = NLM_NRVERS, /* number of entries in nlmsvc_version */ | |
554 | .pg_vers = nlmsvc_version, /* version table */ | |
555 | .pg_name = "lockd", /* service name */ | |
556 | .pg_class = "nfsd", /* share authentication with nfsd */ | |
557 | .pg_stats = &nlmsvc_stats, /* stats table */ | |
558 | .pg_authenticate = &lockd_authenticate /* export authentication */ | |
559 | }; |