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Commit | Line | Data |
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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; |
abd1ec4e | 53 | static struct svc_rqst *nlmsvc_rqst; |
1da177e4 LT |
54 | unsigned long nlmsvc_timeout; |
55 | ||
1da177e4 LT |
56 | /* |
57 | * These can be set at insmod time (useful for NFS as root filesystem), | |
58 | * and also changed through the sysctl interface. -- Jamie Lokier, Aug 2003 | |
59 | */ | |
60 | static unsigned long nlm_grace_period; | |
61 | static unsigned long nlm_timeout = LOCKD_DFLT_TIMEO; | |
62 | static int nlm_udpport, nlm_tcpport; | |
abd1f500 | 63 | int nsm_use_hostnames = 0; |
1da177e4 LT |
64 | |
65 | /* | |
66 | * Constants needed for the sysctl interface. | |
67 | */ | |
68 | static const unsigned long nlm_grace_period_min = 0; | |
69 | static const unsigned long nlm_grace_period_max = 240; | |
70 | static const unsigned long nlm_timeout_min = 3; | |
71 | static const unsigned long nlm_timeout_max = 20; | |
72 | static const int nlm_port_min = 0, nlm_port_max = 65535; | |
73 | ||
90d5b180 | 74 | #ifdef CONFIG_SYSCTL |
1da177e4 | 75 | static struct ctl_table_header * nlm_sysctl_table; |
90d5b180 | 76 | #endif |
1da177e4 | 77 | |
9a8db97e | 78 | static unsigned long get_lockd_grace_period(void) |
1da177e4 | 79 | { |
1da177e4 LT |
80 | /* Note: nlm_timeout should always be nonzero */ |
81 | if (nlm_grace_period) | |
9a8db97e | 82 | return roundup(nlm_grace_period, nlm_timeout) * HZ; |
1da177e4 | 83 | else |
9a8db97e ME |
84 | return nlm_timeout * 5 * HZ; |
85 | } | |
86 | ||
af558e33 BF |
87 | static struct lock_manager lockd_manager = { |
88 | }; | |
9a8db97e | 89 | |
c8ab5f2a | 90 | static void grace_ender(struct work_struct *not_used) |
9a8db97e | 91 | { |
af558e33 | 92 | locks_end_grace(&lockd_manager); |
1da177e4 LT |
93 | } |
94 | ||
c8ab5f2a BF |
95 | static DECLARE_DELAYED_WORK(grace_period_end, grace_ender); |
96 | ||
97 | static void set_grace_period(void) | |
1da177e4 | 98 | { |
af558e33 | 99 | unsigned long grace_period = get_lockd_grace_period(); |
c8ab5f2a | 100 | |
af558e33 | 101 | locks_start_grace(&lockd_manager); |
c8ab5f2a BF |
102 | cancel_delayed_work_sync(&grace_period_end); |
103 | schedule_delayed_work(&grace_period_end, grace_period); | |
1da177e4 LT |
104 | } |
105 | ||
106 | /* | |
107 | * This is the lockd kernel thread | |
108 | */ | |
d751a7cd JL |
109 | static int |
110 | lockd(void *vrqstp) | |
1da177e4 | 111 | { |
f97c650d | 112 | int err = 0, preverr = 0; |
d751a7cd | 113 | struct svc_rqst *rqstp = vrqstp; |
1da177e4 | 114 | |
d751a7cd | 115 | /* try_to_freeze() is called from svc_recv() */ |
83144186 | 116 | set_freezable(); |
1da177e4 | 117 | |
d751a7cd | 118 | /* Allow SIGKILL to tell lockd to drop all of its locks */ |
1da177e4 LT |
119 | allow_signal(SIGKILL); |
120 | ||
1da177e4 LT |
121 | dprintk("NFS locking service started (ver " LOCKD_VERSION ").\n"); |
122 | ||
d751a7cd JL |
123 | /* |
124 | * FIXME: it would be nice if lockd didn't spend its entire life | |
125 | * running under the BKL. At the very least, it would be good to | |
126 | * have someone clarify what it's intended to protect here. I've | |
127 | * seen some handwavy posts about posix locking needing to be | |
128 | * done under the BKL, but it's far from clear. | |
129 | */ | |
130 | lock_kernel(); | |
131 | ||
1da177e4 LT |
132 | if (!nlm_timeout) |
133 | nlm_timeout = LOCKD_DFLT_TIMEO; | |
134 | nlmsvc_timeout = nlm_timeout * HZ; | |
135 | ||
c8ab5f2a | 136 | set_grace_period(); |
1da177e4 LT |
137 | |
138 | /* | |
139 | * The main request loop. We don't terminate until the last | |
d751a7cd | 140 | * NFS mount or NFS daemon has gone away. |
1da177e4 | 141 | */ |
d751a7cd | 142 | while (!kthread_should_stop()) { |
1da177e4 | 143 | long timeout = MAX_SCHEDULE_TIMEOUT; |
5216a8e7 | 144 | RPC_IFDEBUG(char buf[RPC_MAX_ADDRBUFLEN]); |
1da177e4 LT |
145 | |
146 | if (signalled()) { | |
147 | flush_signals(current); | |
148 | if (nlmsvc_ops) { | |
149 | nlmsvc_invalidate_all(); | |
c8ab5f2a | 150 | set_grace_period(); |
1da177e4 | 151 | } |
d751a7cd | 152 | continue; |
1da177e4 LT |
153 | } |
154 | ||
8fafa900 BF |
155 | timeout = nlmsvc_retry_blocked(); |
156 | ||
1da177e4 LT |
157 | /* |
158 | * Find a socket with data available and call its | |
159 | * recvfrom routine. | |
160 | */ | |
6fb2b47f | 161 | err = svc_recv(rqstp, timeout); |
f97c650d JL |
162 | if (err == -EAGAIN || err == -EINTR) { |
163 | preverr = err; | |
1da177e4 | 164 | continue; |
f97c650d | 165 | } |
1da177e4 | 166 | if (err < 0) { |
f97c650d JL |
167 | if (err != preverr) { |
168 | printk(KERN_WARNING "%s: unexpected error " | |
169 | "from svc_recv (%d)\n", __func__, err); | |
170 | preverr = err; | |
171 | } | |
172 | schedule_timeout_interruptible(HZ); | |
173 | continue; | |
1da177e4 | 174 | } |
f97c650d | 175 | preverr = err; |
1da177e4 | 176 | |
ad06e4bd CL |
177 | dprintk("lockd: request from %s\n", |
178 | svc_print_addr(rqstp, buf, sizeof(buf))); | |
1da177e4 | 179 | |
6fb2b47f | 180 | svc_process(rqstp); |
1da177e4 | 181 | } |
2bd61579 | 182 | flush_signals(current); |
c8ab5f2a | 183 | cancel_delayed_work_sync(&grace_period_end); |
2c5e7615 | 184 | locks_end_grace(&lockd_manager); |
d751a7cd JL |
185 | if (nlmsvc_ops) |
186 | nlmsvc_invalidate_all(); | |
187 | nlm_shutdown_hosts(); | |
d751a7cd | 188 | unlock_kernel(); |
d751a7cd | 189 | return 0; |
1da177e4 LT |
190 | } |
191 | ||
482fb94e | 192 | /* |
8c3916f4 CL |
193 | * Ensure there are active UDP and TCP listeners for lockd. |
194 | * | |
195 | * Even if we have only TCP NFS mounts and/or TCP NFSDs, some | |
196 | * local services (such as rpc.statd) still require UDP, and | |
197 | * some NFS servers do not yet support NLM over TCP. | |
198 | * | |
199 | * Returns zero if all listeners are available; otherwise a | |
200 | * negative errno value is returned. | |
482fb94e | 201 | */ |
8c3916f4 | 202 | static int make_socks(struct svc_serv *serv) |
24e36663 | 203 | { |
482fb94e | 204 | static int warned; |
a217813f | 205 | struct svc_xprt *xprt; |
24e36663 | 206 | int err = 0; |
482fb94e | 207 | |
8c3916f4 CL |
208 | xprt = svc_find_xprt(serv, "udp", 0, 0); |
209 | if (!xprt) | |
210 | err = svc_create_xprt(serv, "udp", nlm_udpport, | |
211 | SVC_SOCK_DEFAULTS); | |
212 | else | |
213 | svc_xprt_put(xprt); | |
214 | if (err >= 0) { | |
a217813f TT |
215 | xprt = svc_find_xprt(serv, "tcp", 0, 0); |
216 | if (!xprt) | |
d7c9f1ed TT |
217 | err = svc_create_xprt(serv, "tcp", nlm_tcpport, |
218 | SVC_SOCK_DEFAULTS); | |
a217813f TT |
219 | else |
220 | svc_xprt_put(xprt); | |
221 | } | |
482fb94e | 222 | if (err >= 0) { |
7dcf91ec | 223 | warned = 0; |
482fb94e CL |
224 | err = 0; |
225 | } else if (warned++ == 0) | |
7dcf91ec N |
226 | printk(KERN_WARNING |
227 | "lockd_up: makesock failed, error=%d\n", err); | |
24e36663 N |
228 | return err; |
229 | } | |
230 | ||
1da177e4 LT |
231 | /* |
232 | * Bring up the lockd process if it's not already up. | |
233 | */ | |
26a41409 | 234 | int lockd_up(void) |
1da177e4 | 235 | { |
d751a7cd | 236 | struct svc_serv *serv; |
d751a7cd | 237 | int error = 0; |
1da177e4 | 238 | |
353ab6e9 | 239 | mutex_lock(&nlmsvc_mutex); |
1da177e4 LT |
240 | /* |
241 | * Check whether we're already up and running. | |
242 | */ | |
8c3916f4 | 243 | if (nlmsvc_rqst) |
1da177e4 LT |
244 | goto out; |
245 | ||
246 | /* | |
247 | * Sanity check: if there's no pid, | |
248 | * we should be the first user ... | |
249 | */ | |
4a3ae42d | 250 | if (nlmsvc_users) |
1da177e4 LT |
251 | printk(KERN_WARNING |
252 | "lockd_up: no pid, %d users??\n", nlmsvc_users); | |
253 | ||
254 | error = -ENOMEM; | |
e851db5b | 255 | serv = svc_create(&nlmsvc_program, LOCKD_BUFSIZE, AF_INET, NULL); |
1da177e4 LT |
256 | if (!serv) { |
257 | printk(KERN_WARNING "lockd_up: create service failed\n"); | |
258 | goto out; | |
259 | } | |
260 | ||
8c3916f4 CL |
261 | error = make_socks(serv); |
262 | if (error < 0) | |
1da177e4 | 263 | goto destroy_and_out; |
1da177e4 LT |
264 | |
265 | /* | |
266 | * Create the kernel thread and wait for it to start. | |
267 | */ | |
abd1ec4e JL |
268 | nlmsvc_rqst = svc_prepare_thread(serv, &serv->sv_pools[0]); |
269 | if (IS_ERR(nlmsvc_rqst)) { | |
270 | error = PTR_ERR(nlmsvc_rqst); | |
271 | nlmsvc_rqst = NULL; | |
d751a7cd JL |
272 | printk(KERN_WARNING |
273 | "lockd_up: svc_rqst allocation failed, error=%d\n", | |
274 | error); | |
275 | goto destroy_and_out; | |
276 | } | |
277 | ||
278 | svc_sock_update_bufs(serv); | |
d751a7cd | 279 | |
abd1ec4e | 280 | nlmsvc_task = kthread_run(lockd, nlmsvc_rqst, serv->sv_name); |
d751a7cd JL |
281 | if (IS_ERR(nlmsvc_task)) { |
282 | error = PTR_ERR(nlmsvc_task); | |
abd1ec4e | 283 | svc_exit_thread(nlmsvc_rqst); |
d751a7cd | 284 | nlmsvc_task = NULL; |
abd1ec4e | 285 | nlmsvc_rqst = NULL; |
1da177e4 | 286 | printk(KERN_WARNING |
d751a7cd | 287 | "lockd_up: kthread_run failed, error=%d\n", error); |
1da177e4 LT |
288 | goto destroy_and_out; |
289 | } | |
1da177e4 LT |
290 | |
291 | /* | |
292 | * Note: svc_serv structures have an initial use count of 1, | |
293 | * so we exit through here on both success and failure. | |
294 | */ | |
295 | destroy_and_out: | |
296 | svc_destroy(serv); | |
297 | out: | |
4a3ae42d N |
298 | if (!error) |
299 | nlmsvc_users++; | |
353ab6e9 | 300 | mutex_unlock(&nlmsvc_mutex); |
1da177e4 LT |
301 | return error; |
302 | } | |
303 | EXPORT_SYMBOL(lockd_up); | |
304 | ||
305 | /* | |
306 | * Decrement the user count and bring down lockd if we're the last. | |
307 | */ | |
308 | void | |
309 | lockd_down(void) | |
310 | { | |
353ab6e9 | 311 | mutex_lock(&nlmsvc_mutex); |
1da177e4 LT |
312 | if (nlmsvc_users) { |
313 | if (--nlmsvc_users) | |
314 | goto out; | |
d751a7cd JL |
315 | } else { |
316 | printk(KERN_ERR "lockd_down: no users! task=%p\n", | |
317 | nlmsvc_task); | |
318 | BUG(); | |
1da177e4 | 319 | } |
1da177e4 | 320 | |
d751a7cd JL |
321 | if (!nlmsvc_task) { |
322 | printk(KERN_ERR "lockd_down: no lockd running.\n"); | |
323 | BUG(); | |
1da177e4 | 324 | } |
d751a7cd | 325 | kthread_stop(nlmsvc_task); |
abd1ec4e JL |
326 | svc_exit_thread(nlmsvc_rqst); |
327 | nlmsvc_task = NULL; | |
328 | nlmsvc_rqst = NULL; | |
1da177e4 | 329 | out: |
353ab6e9 | 330 | mutex_unlock(&nlmsvc_mutex); |
1da177e4 LT |
331 | } |
332 | EXPORT_SYMBOL(lockd_down); | |
333 | ||
90d5b180 CL |
334 | #ifdef CONFIG_SYSCTL |
335 | ||
1da177e4 LT |
336 | /* |
337 | * Sysctl parameters (same as module parameters, different interface). | |
338 | */ | |
339 | ||
1da177e4 LT |
340 | static ctl_table nlm_sysctls[] = { |
341 | { | |
342 | .ctl_name = CTL_UNNUMBERED, | |
343 | .procname = "nlm_grace_period", | |
344 | .data = &nlm_grace_period, | |
7ee91ec1 | 345 | .maxlen = sizeof(unsigned long), |
1da177e4 LT |
346 | .mode = 0644, |
347 | .proc_handler = &proc_doulongvec_minmax, | |
348 | .extra1 = (unsigned long *) &nlm_grace_period_min, | |
349 | .extra2 = (unsigned long *) &nlm_grace_period_max, | |
350 | }, | |
351 | { | |
352 | .ctl_name = CTL_UNNUMBERED, | |
353 | .procname = "nlm_timeout", | |
354 | .data = &nlm_timeout, | |
7ee91ec1 | 355 | .maxlen = sizeof(unsigned long), |
1da177e4 LT |
356 | .mode = 0644, |
357 | .proc_handler = &proc_doulongvec_minmax, | |
358 | .extra1 = (unsigned long *) &nlm_timeout_min, | |
359 | .extra2 = (unsigned long *) &nlm_timeout_max, | |
360 | }, | |
361 | { | |
362 | .ctl_name = CTL_UNNUMBERED, | |
363 | .procname = "nlm_udpport", | |
364 | .data = &nlm_udpport, | |
365 | .maxlen = sizeof(int), | |
366 | .mode = 0644, | |
367 | .proc_handler = &proc_dointvec_minmax, | |
368 | .extra1 = (int *) &nlm_port_min, | |
369 | .extra2 = (int *) &nlm_port_max, | |
370 | }, | |
371 | { | |
372 | .ctl_name = CTL_UNNUMBERED, | |
373 | .procname = "nlm_tcpport", | |
374 | .data = &nlm_tcpport, | |
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 | }, | |
abd1f500 OK |
381 | { |
382 | .ctl_name = CTL_UNNUMBERED, | |
383 | .procname = "nsm_use_hostnames", | |
384 | .data = &nsm_use_hostnames, | |
385 | .maxlen = sizeof(int), | |
386 | .mode = 0644, | |
387 | .proc_handler = &proc_dointvec, | |
388 | }, | |
460f5cac OK |
389 | { |
390 | .ctl_name = CTL_UNNUMBERED, | |
391 | .procname = "nsm_local_state", | |
392 | .data = &nsm_local_state, | |
393 | .maxlen = sizeof(int), | |
394 | .mode = 0644, | |
395 | .proc_handler = &proc_dointvec, | |
396 | }, | |
1da177e4 LT |
397 | { .ctl_name = 0 } |
398 | }; | |
399 | ||
400 | static ctl_table nlm_sysctl_dir[] = { | |
401 | { | |
402 | .ctl_name = CTL_UNNUMBERED, | |
403 | .procname = "nfs", | |
404 | .mode = 0555, | |
405 | .child = nlm_sysctls, | |
406 | }, | |
407 | { .ctl_name = 0 } | |
408 | }; | |
409 | ||
410 | static ctl_table nlm_sysctl_root[] = { | |
411 | { | |
412 | .ctl_name = CTL_FS, | |
413 | .procname = "fs", | |
414 | .mode = 0555, | |
415 | .child = nlm_sysctl_dir, | |
416 | }, | |
417 | { .ctl_name = 0 } | |
418 | }; | |
419 | ||
90d5b180 CL |
420 | #endif /* CONFIG_SYSCTL */ |
421 | ||
1da177e4 | 422 | /* |
405ae7d3 | 423 | * Module (and sysfs) parameters. |
1da177e4 LT |
424 | */ |
425 | ||
426 | #define param_set_min_max(name, type, which_strtol, min, max) \ | |
427 | static int param_set_##name(const char *val, struct kernel_param *kp) \ | |
428 | { \ | |
429 | char *endp; \ | |
430 | __typeof__(type) num = which_strtol(val, &endp, 0); \ | |
431 | if (endp == val || *endp || num < (min) || num > (max)) \ | |
432 | return -EINVAL; \ | |
433 | *((int *) kp->arg) = num; \ | |
434 | return 0; \ | |
435 | } | |
436 | ||
437 | static inline int is_callback(u32 proc) | |
438 | { | |
439 | return proc == NLMPROC_GRANTED | |
440 | || proc == NLMPROC_GRANTED_MSG | |
441 | || proc == NLMPROC_TEST_RES | |
442 | || proc == NLMPROC_LOCK_RES | |
443 | || proc == NLMPROC_CANCEL_RES | |
444 | || proc == NLMPROC_UNLOCK_RES | |
445 | || proc == NLMPROC_NSM_NOTIFY; | |
446 | } | |
447 | ||
448 | ||
449 | static int lockd_authenticate(struct svc_rqst *rqstp) | |
450 | { | |
451 | rqstp->rq_client = NULL; | |
452 | switch (rqstp->rq_authop->flavour) { | |
453 | case RPC_AUTH_NULL: | |
454 | case RPC_AUTH_UNIX: | |
455 | if (rqstp->rq_proc == 0) | |
456 | return SVC_OK; | |
457 | if (is_callback(rqstp->rq_proc)) { | |
458 | /* Leave it to individual procedures to | |
459 | * call nlmsvc_lookup_host(rqstp) | |
460 | */ | |
461 | return SVC_OK; | |
462 | } | |
463 | return svc_set_client(rqstp); | |
464 | } | |
465 | return SVC_DENIED; | |
466 | } | |
467 | ||
468 | ||
469 | param_set_min_max(port, int, simple_strtol, 0, 65535) | |
470 | param_set_min_max(grace_period, unsigned long, simple_strtoul, | |
471 | nlm_grace_period_min, nlm_grace_period_max) | |
472 | param_set_min_max(timeout, unsigned long, simple_strtoul, | |
473 | nlm_timeout_min, nlm_timeout_max) | |
474 | ||
475 | MODULE_AUTHOR("Olaf Kirch <okir@monad.swb.de>"); | |
476 | MODULE_DESCRIPTION("NFS file locking service version " LOCKD_VERSION "."); | |
477 | MODULE_LICENSE("GPL"); | |
478 | ||
479 | module_param_call(nlm_grace_period, param_set_grace_period, param_get_ulong, | |
480 | &nlm_grace_period, 0644); | |
481 | module_param_call(nlm_timeout, param_set_timeout, param_get_ulong, | |
482 | &nlm_timeout, 0644); | |
483 | module_param_call(nlm_udpport, param_set_port, param_get_int, | |
484 | &nlm_udpport, 0644); | |
485 | module_param_call(nlm_tcpport, param_set_port, param_get_int, | |
486 | &nlm_tcpport, 0644); | |
abd1f500 | 487 | module_param(nsm_use_hostnames, bool, 0644); |
1da177e4 LT |
488 | |
489 | /* | |
490 | * Initialising and terminating the module. | |
491 | */ | |
492 | ||
493 | static int __init init_nlm(void) | |
494 | { | |
90d5b180 | 495 | #ifdef CONFIG_SYSCTL |
0b4d4147 | 496 | nlm_sysctl_table = register_sysctl_table(nlm_sysctl_root); |
1da177e4 | 497 | return nlm_sysctl_table ? 0 : -ENOMEM; |
90d5b180 CL |
498 | #else |
499 | return 0; | |
500 | #endif | |
1da177e4 LT |
501 | } |
502 | ||
503 | static void __exit exit_nlm(void) | |
504 | { | |
505 | /* FIXME: delete all NLM clients */ | |
506 | nlm_shutdown_hosts(); | |
90d5b180 | 507 | #ifdef CONFIG_SYSCTL |
1da177e4 | 508 | unregister_sysctl_table(nlm_sysctl_table); |
90d5b180 | 509 | #endif |
1da177e4 LT |
510 | } |
511 | ||
512 | module_init(init_nlm); | |
513 | module_exit(exit_nlm); | |
514 | ||
515 | /* | |
516 | * Define NLM program and procedures | |
517 | */ | |
518 | static struct svc_version nlmsvc_version1 = { | |
519 | .vs_vers = 1, | |
520 | .vs_nproc = 17, | |
521 | .vs_proc = nlmsvc_procedures, | |
522 | .vs_xdrsize = NLMSVC_XDRSIZE, | |
523 | }; | |
524 | static struct svc_version nlmsvc_version3 = { | |
525 | .vs_vers = 3, | |
526 | .vs_nproc = 24, | |
527 | .vs_proc = nlmsvc_procedures, | |
528 | .vs_xdrsize = NLMSVC_XDRSIZE, | |
529 | }; | |
530 | #ifdef CONFIG_LOCKD_V4 | |
531 | static struct svc_version nlmsvc_version4 = { | |
532 | .vs_vers = 4, | |
533 | .vs_nproc = 24, | |
534 | .vs_proc = nlmsvc_procedures4, | |
535 | .vs_xdrsize = NLMSVC_XDRSIZE, | |
536 | }; | |
537 | #endif | |
538 | static struct svc_version * nlmsvc_version[] = { | |
539 | [1] = &nlmsvc_version1, | |
540 | [3] = &nlmsvc_version3, | |
541 | #ifdef CONFIG_LOCKD_V4 | |
542 | [4] = &nlmsvc_version4, | |
543 | #endif | |
544 | }; | |
545 | ||
546 | static struct svc_stat nlmsvc_stats; | |
547 | ||
e8c96f8c | 548 | #define NLM_NRVERS ARRAY_SIZE(nlmsvc_version) |
1da177e4 LT |
549 | static struct svc_program nlmsvc_program = { |
550 | .pg_prog = NLM_PROGRAM, /* program number */ | |
551 | .pg_nvers = NLM_NRVERS, /* number of entries in nlmsvc_version */ | |
552 | .pg_vers = nlmsvc_version, /* version table */ | |
553 | .pg_name = "lockd", /* service name */ | |
554 | .pg_class = "nfsd", /* share authentication with nfsd */ | |
555 | .pg_stats = &nlmsvc_stats, /* stats table */ | |
556 | .pg_authenticate = &lockd_authenticate /* export authentication */ | |
557 | }; |