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; |
abd1ec4e | 53 | static struct svc_rqst *nlmsvc_rqst; |
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 | ||
90d5b180 | 75 | #ifdef CONFIG_SYSCTL |
1da177e4 | 76 | static struct ctl_table_header * nlm_sysctl_table; |
90d5b180 | 77 | #endif |
1da177e4 | 78 | |
9a8db97e | 79 | static unsigned long get_lockd_grace_period(void) |
1da177e4 | 80 | { |
1da177e4 LT |
81 | /* Note: nlm_timeout should always be nonzero */ |
82 | if (nlm_grace_period) | |
9a8db97e | 83 | return roundup(nlm_grace_period, nlm_timeout) * HZ; |
1da177e4 | 84 | else |
9a8db97e ME |
85 | return nlm_timeout * 5 * HZ; |
86 | } | |
87 | ||
88 | unsigned long get_nfs_grace_period(void) | |
89 | { | |
90 | unsigned long lockdgrace = get_lockd_grace_period(); | |
91 | unsigned long nfsdgrace = 0; | |
92 | ||
93 | if (nlmsvc_ops) | |
94 | nfsdgrace = nlmsvc_ops->get_grace_period(); | |
95 | ||
96 | return max(lockdgrace, nfsdgrace); | |
97 | } | |
98 | EXPORT_SYMBOL(get_nfs_grace_period); | |
99 | ||
100 | static unsigned long set_grace_period(void) | |
101 | { | |
1da177e4 | 102 | nlmsvc_grace_period = 1; |
9a8db97e | 103 | return get_nfs_grace_period() + jiffies; |
1da177e4 LT |
104 | } |
105 | ||
106 | static inline void clear_grace_period(void) | |
107 | { | |
108 | nlmsvc_grace_period = 0; | |
109 | } | |
110 | ||
111 | /* | |
112 | * This is the lockd kernel thread | |
113 | */ | |
d751a7cd JL |
114 | static int |
115 | lockd(void *vrqstp) | |
1da177e4 | 116 | { |
f97c650d | 117 | int err = 0, preverr = 0; |
d751a7cd | 118 | struct svc_rqst *rqstp = vrqstp; |
1da177e4 LT |
119 | unsigned long grace_period_expire; |
120 | ||
d751a7cd | 121 | /* try_to_freeze() is called from svc_recv() */ |
83144186 | 122 | set_freezable(); |
1da177e4 | 123 | |
d751a7cd | 124 | /* Allow SIGKILL to tell lockd to drop all of its locks */ |
1da177e4 LT |
125 | allow_signal(SIGKILL); |
126 | ||
1da177e4 LT |
127 | dprintk("NFS locking service started (ver " LOCKD_VERSION ").\n"); |
128 | ||
d751a7cd JL |
129 | /* |
130 | * FIXME: it would be nice if lockd didn't spend its entire life | |
131 | * running under the BKL. At the very least, it would be good to | |
132 | * have someone clarify what it's intended to protect here. I've | |
133 | * seen some handwavy posts about posix locking needing to be | |
134 | * done under the BKL, but it's far from clear. | |
135 | */ | |
136 | lock_kernel(); | |
137 | ||
1da177e4 LT |
138 | if (!nlm_timeout) |
139 | nlm_timeout = LOCKD_DFLT_TIMEO; | |
140 | nlmsvc_timeout = nlm_timeout * HZ; | |
141 | ||
142 | grace_period_expire = set_grace_period(); | |
143 | ||
144 | /* | |
145 | * The main request loop. We don't terminate until the last | |
d751a7cd | 146 | * NFS mount or NFS daemon has gone away. |
1da177e4 | 147 | */ |
d751a7cd | 148 | while (!kthread_should_stop()) { |
1da177e4 | 149 | long timeout = MAX_SCHEDULE_TIMEOUT; |
5216a8e7 | 150 | RPC_IFDEBUG(char buf[RPC_MAX_ADDRBUFLEN]); |
1da177e4 LT |
151 | |
152 | if (signalled()) { | |
153 | flush_signals(current); | |
154 | if (nlmsvc_ops) { | |
155 | nlmsvc_invalidate_all(); | |
156 | grace_period_expire = set_grace_period(); | |
157 | } | |
d751a7cd | 158 | continue; |
1da177e4 LT |
159 | } |
160 | ||
161 | /* | |
162 | * Retry any blocked locks that have been notified by | |
163 | * the VFS. Don't do this during grace period. | |
164 | * (Theoretically, there shouldn't even be blocked locks | |
165 | * during grace period). | |
166 | */ | |
167 | if (!nlmsvc_grace_period) { | |
168 | timeout = nlmsvc_retry_blocked(); | |
169 | } else if (time_before(grace_period_expire, jiffies)) | |
170 | clear_grace_period(); | |
171 | ||
172 | /* | |
173 | * Find a socket with data available and call its | |
174 | * recvfrom routine. | |
175 | */ | |
6fb2b47f | 176 | err = svc_recv(rqstp, timeout); |
f97c650d JL |
177 | if (err == -EAGAIN || err == -EINTR) { |
178 | preverr = err; | |
1da177e4 | 179 | continue; |
f97c650d | 180 | } |
1da177e4 | 181 | if (err < 0) { |
f97c650d JL |
182 | if (err != preverr) { |
183 | printk(KERN_WARNING "%s: unexpected error " | |
184 | "from svc_recv (%d)\n", __func__, err); | |
185 | preverr = err; | |
186 | } | |
187 | schedule_timeout_interruptible(HZ); | |
188 | continue; | |
1da177e4 | 189 | } |
f97c650d | 190 | preverr = err; |
1da177e4 | 191 | |
ad06e4bd CL |
192 | dprintk("lockd: request from %s\n", |
193 | svc_print_addr(rqstp, buf, sizeof(buf))); | |
1da177e4 | 194 | |
6fb2b47f | 195 | svc_process(rqstp); |
1da177e4 | 196 | } |
2bd61579 | 197 | flush_signals(current); |
d751a7cd JL |
198 | if (nlmsvc_ops) |
199 | nlmsvc_invalidate_all(); | |
200 | nlm_shutdown_hosts(); | |
d751a7cd | 201 | unlock_kernel(); |
d751a7cd | 202 | return 0; |
1da177e4 LT |
203 | } |
204 | ||
482fb94e CL |
205 | /* |
206 | * Make any sockets that are needed but not present. | |
207 | * If nlm_udpport or nlm_tcpport were set as module | |
208 | * options, make those sockets unconditionally | |
209 | */ | |
24e36663 N |
210 | static int make_socks(struct svc_serv *serv, int proto) |
211 | { | |
482fb94e | 212 | static int warned; |
a217813f | 213 | struct svc_xprt *xprt; |
24e36663 | 214 | int err = 0; |
482fb94e | 215 | |
a217813f TT |
216 | if (proto == IPPROTO_UDP || nlm_udpport) { |
217 | xprt = svc_find_xprt(serv, "udp", 0, 0); | |
218 | if (!xprt) | |
d7c9f1ed TT |
219 | err = svc_create_xprt(serv, "udp", nlm_udpport, |
220 | SVC_SOCK_DEFAULTS); | |
a217813f TT |
221 | else |
222 | svc_xprt_put(xprt); | |
223 | } | |
224 | if (err >= 0 && (proto == IPPROTO_TCP || nlm_tcpport)) { | |
225 | xprt = svc_find_xprt(serv, "tcp", 0, 0); | |
226 | if (!xprt) | |
d7c9f1ed TT |
227 | err = svc_create_xprt(serv, "tcp", nlm_tcpport, |
228 | SVC_SOCK_DEFAULTS); | |
a217813f TT |
229 | else |
230 | svc_xprt_put(xprt); | |
231 | } | |
482fb94e | 232 | if (err >= 0) { |
7dcf91ec | 233 | warned = 0; |
482fb94e CL |
234 | err = 0; |
235 | } else if (warned++ == 0) | |
7dcf91ec N |
236 | printk(KERN_WARNING |
237 | "lockd_up: makesock failed, error=%d\n", err); | |
24e36663 N |
238 | return err; |
239 | } | |
240 | ||
1da177e4 LT |
241 | /* |
242 | * Bring up the lockd process if it's not already up. | |
243 | */ | |
244 | int | |
24e36663 | 245 | lockd_up(int proto) /* Maybe add a 'family' option when IPv6 is supported ?? */ |
1da177e4 | 246 | { |
d751a7cd | 247 | struct svc_serv *serv; |
d751a7cd | 248 | int error = 0; |
1da177e4 | 249 | |
353ab6e9 | 250 | mutex_lock(&nlmsvc_mutex); |
1da177e4 LT |
251 | /* |
252 | * Check whether we're already up and running. | |
253 | */ | |
abd1ec4e | 254 | if (nlmsvc_rqst) { |
4a3ae42d | 255 | if (proto) |
abd1ec4e | 256 | error = make_socks(nlmsvc_rqst->rq_server, proto); |
1da177e4 | 257 | goto out; |
24e36663 | 258 | } |
1da177e4 LT |
259 | |
260 | /* | |
261 | * Sanity check: if there's no pid, | |
262 | * we should be the first user ... | |
263 | */ | |
4a3ae42d | 264 | if (nlmsvc_users) |
1da177e4 LT |
265 | printk(KERN_WARNING |
266 | "lockd_up: no pid, %d users??\n", nlmsvc_users); | |
267 | ||
268 | error = -ENOMEM; | |
bc591ccf | 269 | serv = svc_create(&nlmsvc_program, LOCKD_BUFSIZE, NULL); |
1da177e4 LT |
270 | if (!serv) { |
271 | printk(KERN_WARNING "lockd_up: create service failed\n"); | |
272 | goto out; | |
273 | } | |
274 | ||
7dcf91ec | 275 | if ((error = make_socks(serv, proto)) < 0) |
1da177e4 | 276 | goto destroy_and_out; |
1da177e4 LT |
277 | |
278 | /* | |
279 | * Create the kernel thread and wait for it to start. | |
280 | */ | |
abd1ec4e JL |
281 | nlmsvc_rqst = svc_prepare_thread(serv, &serv->sv_pools[0]); |
282 | if (IS_ERR(nlmsvc_rqst)) { | |
283 | error = PTR_ERR(nlmsvc_rqst); | |
284 | nlmsvc_rqst = NULL; | |
d751a7cd JL |
285 | printk(KERN_WARNING |
286 | "lockd_up: svc_rqst allocation failed, error=%d\n", | |
287 | error); | |
288 | goto destroy_and_out; | |
289 | } | |
290 | ||
291 | svc_sock_update_bufs(serv); | |
d751a7cd | 292 | |
abd1ec4e | 293 | nlmsvc_task = kthread_run(lockd, nlmsvc_rqst, serv->sv_name); |
d751a7cd JL |
294 | if (IS_ERR(nlmsvc_task)) { |
295 | error = PTR_ERR(nlmsvc_task); | |
abd1ec4e | 296 | svc_exit_thread(nlmsvc_rqst); |
d751a7cd | 297 | nlmsvc_task = NULL; |
abd1ec4e | 298 | nlmsvc_rqst = NULL; |
1da177e4 | 299 | printk(KERN_WARNING |
d751a7cd | 300 | "lockd_up: kthread_run failed, error=%d\n", error); |
1da177e4 LT |
301 | goto destroy_and_out; |
302 | } | |
1da177e4 LT |
303 | |
304 | /* | |
305 | * Note: svc_serv structures have an initial use count of 1, | |
306 | * so we exit through here on both success and failure. | |
307 | */ | |
308 | destroy_and_out: | |
309 | svc_destroy(serv); | |
310 | out: | |
4a3ae42d N |
311 | if (!error) |
312 | nlmsvc_users++; | |
353ab6e9 | 313 | mutex_unlock(&nlmsvc_mutex); |
1da177e4 LT |
314 | return error; |
315 | } | |
316 | EXPORT_SYMBOL(lockd_up); | |
317 | ||
318 | /* | |
319 | * Decrement the user count and bring down lockd if we're the last. | |
320 | */ | |
321 | void | |
322 | lockd_down(void) | |
323 | { | |
353ab6e9 | 324 | mutex_lock(&nlmsvc_mutex); |
1da177e4 LT |
325 | if (nlmsvc_users) { |
326 | if (--nlmsvc_users) | |
327 | goto out; | |
d751a7cd JL |
328 | } else { |
329 | printk(KERN_ERR "lockd_down: no users! task=%p\n", | |
330 | nlmsvc_task); | |
331 | BUG(); | |
1da177e4 | 332 | } |
1da177e4 | 333 | |
d751a7cd JL |
334 | if (!nlmsvc_task) { |
335 | printk(KERN_ERR "lockd_down: no lockd running.\n"); | |
336 | BUG(); | |
1da177e4 | 337 | } |
d751a7cd | 338 | kthread_stop(nlmsvc_task); |
abd1ec4e JL |
339 | svc_exit_thread(nlmsvc_rqst); |
340 | nlmsvc_task = NULL; | |
341 | nlmsvc_rqst = NULL; | |
1da177e4 | 342 | out: |
353ab6e9 | 343 | mutex_unlock(&nlmsvc_mutex); |
1da177e4 LT |
344 | } |
345 | EXPORT_SYMBOL(lockd_down); | |
346 | ||
90d5b180 CL |
347 | #ifdef CONFIG_SYSCTL |
348 | ||
1da177e4 LT |
349 | /* |
350 | * Sysctl parameters (same as module parameters, different interface). | |
351 | */ | |
352 | ||
1da177e4 LT |
353 | static ctl_table nlm_sysctls[] = { |
354 | { | |
355 | .ctl_name = CTL_UNNUMBERED, | |
356 | .procname = "nlm_grace_period", | |
357 | .data = &nlm_grace_period, | |
7ee91ec1 | 358 | .maxlen = sizeof(unsigned long), |
1da177e4 LT |
359 | .mode = 0644, |
360 | .proc_handler = &proc_doulongvec_minmax, | |
361 | .extra1 = (unsigned long *) &nlm_grace_period_min, | |
362 | .extra2 = (unsigned long *) &nlm_grace_period_max, | |
363 | }, | |
364 | { | |
365 | .ctl_name = CTL_UNNUMBERED, | |
366 | .procname = "nlm_timeout", | |
367 | .data = &nlm_timeout, | |
7ee91ec1 | 368 | .maxlen = sizeof(unsigned long), |
1da177e4 LT |
369 | .mode = 0644, |
370 | .proc_handler = &proc_doulongvec_minmax, | |
371 | .extra1 = (unsigned long *) &nlm_timeout_min, | |
372 | .extra2 = (unsigned long *) &nlm_timeout_max, | |
373 | }, | |
374 | { | |
375 | .ctl_name = CTL_UNNUMBERED, | |
376 | .procname = "nlm_udpport", | |
377 | .data = &nlm_udpport, | |
378 | .maxlen = sizeof(int), | |
379 | .mode = 0644, | |
380 | .proc_handler = &proc_dointvec_minmax, | |
381 | .extra1 = (int *) &nlm_port_min, | |
382 | .extra2 = (int *) &nlm_port_max, | |
383 | }, | |
384 | { | |
385 | .ctl_name = CTL_UNNUMBERED, | |
386 | .procname = "nlm_tcpport", | |
387 | .data = &nlm_tcpport, | |
388 | .maxlen = sizeof(int), | |
389 | .mode = 0644, | |
390 | .proc_handler = &proc_dointvec_minmax, | |
391 | .extra1 = (int *) &nlm_port_min, | |
392 | .extra2 = (int *) &nlm_port_max, | |
393 | }, | |
abd1f500 OK |
394 | { |
395 | .ctl_name = CTL_UNNUMBERED, | |
396 | .procname = "nsm_use_hostnames", | |
397 | .data = &nsm_use_hostnames, | |
398 | .maxlen = sizeof(int), | |
399 | .mode = 0644, | |
400 | .proc_handler = &proc_dointvec, | |
401 | }, | |
460f5cac OK |
402 | { |
403 | .ctl_name = CTL_UNNUMBERED, | |
404 | .procname = "nsm_local_state", | |
405 | .data = &nsm_local_state, | |
406 | .maxlen = sizeof(int), | |
407 | .mode = 0644, | |
408 | .proc_handler = &proc_dointvec, | |
409 | }, | |
1da177e4 LT |
410 | { .ctl_name = 0 } |
411 | }; | |
412 | ||
413 | static ctl_table nlm_sysctl_dir[] = { | |
414 | { | |
415 | .ctl_name = CTL_UNNUMBERED, | |
416 | .procname = "nfs", | |
417 | .mode = 0555, | |
418 | .child = nlm_sysctls, | |
419 | }, | |
420 | { .ctl_name = 0 } | |
421 | }; | |
422 | ||
423 | static ctl_table nlm_sysctl_root[] = { | |
424 | { | |
425 | .ctl_name = CTL_FS, | |
426 | .procname = "fs", | |
427 | .mode = 0555, | |
428 | .child = nlm_sysctl_dir, | |
429 | }, | |
430 | { .ctl_name = 0 } | |
431 | }; | |
432 | ||
90d5b180 CL |
433 | #endif /* CONFIG_SYSCTL */ |
434 | ||
1da177e4 | 435 | /* |
405ae7d3 | 436 | * Module (and sysfs) parameters. |
1da177e4 LT |
437 | */ |
438 | ||
439 | #define param_set_min_max(name, type, which_strtol, min, max) \ | |
440 | static int param_set_##name(const char *val, struct kernel_param *kp) \ | |
441 | { \ | |
442 | char *endp; \ | |
443 | __typeof__(type) num = which_strtol(val, &endp, 0); \ | |
444 | if (endp == val || *endp || num < (min) || num > (max)) \ | |
445 | return -EINVAL; \ | |
446 | *((int *) kp->arg) = num; \ | |
447 | return 0; \ | |
448 | } | |
449 | ||
450 | static inline int is_callback(u32 proc) | |
451 | { | |
452 | return proc == NLMPROC_GRANTED | |
453 | || proc == NLMPROC_GRANTED_MSG | |
454 | || proc == NLMPROC_TEST_RES | |
455 | || proc == NLMPROC_LOCK_RES | |
456 | || proc == NLMPROC_CANCEL_RES | |
457 | || proc == NLMPROC_UNLOCK_RES | |
458 | || proc == NLMPROC_NSM_NOTIFY; | |
459 | } | |
460 | ||
461 | ||
462 | static int lockd_authenticate(struct svc_rqst *rqstp) | |
463 | { | |
464 | rqstp->rq_client = NULL; | |
465 | switch (rqstp->rq_authop->flavour) { | |
466 | case RPC_AUTH_NULL: | |
467 | case RPC_AUTH_UNIX: | |
468 | if (rqstp->rq_proc == 0) | |
469 | return SVC_OK; | |
470 | if (is_callback(rqstp->rq_proc)) { | |
471 | /* Leave it to individual procedures to | |
472 | * call nlmsvc_lookup_host(rqstp) | |
473 | */ | |
474 | return SVC_OK; | |
475 | } | |
476 | return svc_set_client(rqstp); | |
477 | } | |
478 | return SVC_DENIED; | |
479 | } | |
480 | ||
481 | ||
482 | param_set_min_max(port, int, simple_strtol, 0, 65535) | |
483 | param_set_min_max(grace_period, unsigned long, simple_strtoul, | |
484 | nlm_grace_period_min, nlm_grace_period_max) | |
485 | param_set_min_max(timeout, unsigned long, simple_strtoul, | |
486 | nlm_timeout_min, nlm_timeout_max) | |
487 | ||
488 | MODULE_AUTHOR("Olaf Kirch <okir@monad.swb.de>"); | |
489 | MODULE_DESCRIPTION("NFS file locking service version " LOCKD_VERSION "."); | |
490 | MODULE_LICENSE("GPL"); | |
491 | ||
492 | module_param_call(nlm_grace_period, param_set_grace_period, param_get_ulong, | |
493 | &nlm_grace_period, 0644); | |
494 | module_param_call(nlm_timeout, param_set_timeout, param_get_ulong, | |
495 | &nlm_timeout, 0644); | |
496 | module_param_call(nlm_udpport, param_set_port, param_get_int, | |
497 | &nlm_udpport, 0644); | |
498 | module_param_call(nlm_tcpport, param_set_port, param_get_int, | |
499 | &nlm_tcpport, 0644); | |
abd1f500 | 500 | module_param(nsm_use_hostnames, bool, 0644); |
1da177e4 LT |
501 | |
502 | /* | |
503 | * Initialising and terminating the module. | |
504 | */ | |
505 | ||
506 | static int __init init_nlm(void) | |
507 | { | |
90d5b180 | 508 | #ifdef CONFIG_SYSCTL |
0b4d4147 | 509 | nlm_sysctl_table = register_sysctl_table(nlm_sysctl_root); |
1da177e4 | 510 | return nlm_sysctl_table ? 0 : -ENOMEM; |
90d5b180 CL |
511 | #else |
512 | return 0; | |
513 | #endif | |
1da177e4 LT |
514 | } |
515 | ||
516 | static void __exit exit_nlm(void) | |
517 | { | |
518 | /* FIXME: delete all NLM clients */ | |
519 | nlm_shutdown_hosts(); | |
90d5b180 | 520 | #ifdef CONFIG_SYSCTL |
1da177e4 | 521 | unregister_sysctl_table(nlm_sysctl_table); |
90d5b180 | 522 | #endif |
1da177e4 LT |
523 | } |
524 | ||
525 | module_init(init_nlm); | |
526 | module_exit(exit_nlm); | |
527 | ||
528 | /* | |
529 | * Define NLM program and procedures | |
530 | */ | |
531 | static struct svc_version nlmsvc_version1 = { | |
532 | .vs_vers = 1, | |
533 | .vs_nproc = 17, | |
534 | .vs_proc = nlmsvc_procedures, | |
535 | .vs_xdrsize = NLMSVC_XDRSIZE, | |
536 | }; | |
537 | static struct svc_version nlmsvc_version3 = { | |
538 | .vs_vers = 3, | |
539 | .vs_nproc = 24, | |
540 | .vs_proc = nlmsvc_procedures, | |
541 | .vs_xdrsize = NLMSVC_XDRSIZE, | |
542 | }; | |
543 | #ifdef CONFIG_LOCKD_V4 | |
544 | static struct svc_version nlmsvc_version4 = { | |
545 | .vs_vers = 4, | |
546 | .vs_nproc = 24, | |
547 | .vs_proc = nlmsvc_procedures4, | |
548 | .vs_xdrsize = NLMSVC_XDRSIZE, | |
549 | }; | |
550 | #endif | |
551 | static struct svc_version * nlmsvc_version[] = { | |
552 | [1] = &nlmsvc_version1, | |
553 | [3] = &nlmsvc_version3, | |
554 | #ifdef CONFIG_LOCKD_V4 | |
555 | [4] = &nlmsvc_version4, | |
556 | #endif | |
557 | }; | |
558 | ||
559 | static struct svc_stat nlmsvc_stats; | |
560 | ||
e8c96f8c | 561 | #define NLM_NRVERS ARRAY_SIZE(nlmsvc_version) |
1da177e4 LT |
562 | static struct svc_program nlmsvc_program = { |
563 | .pg_prog = NLM_PROGRAM, /* program number */ | |
564 | .pg_nvers = NLM_NRVERS, /* number of entries in nlmsvc_version */ | |
565 | .pg_vers = nlmsvc_version, /* version table */ | |
566 | .pg_name = "lockd", /* service name */ | |
567 | .pg_class = "nfsd", /* share authentication with nfsd */ | |
568 | .pg_stats = &nlmsvc_stats, /* stats table */ | |
569 | .pg_authenticate = &lockd_authenticate /* export authentication */ | |
570 | }; |