blob: 3688e55901fc48e733c24329d05e140252004648 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * linux/fs/lockd/svcproc.c
3 *
4 * Lockd server procedures. We don't implement the NLM_*_RES
5 * procedures because we don't use the async procedures.
6 *
7 * Copyright (C) 1996, Olaf Kirch <okir@monad.swb.de>
8 */
9
Linus Torvalds1da177e2005-04-16 15:20:36 -070010#include <linux/types.h>
11#include <linux/time.h>
12#include <linux/slab.h>
13#include <linux/in.h>
14#include <linux/sunrpc/svc.h>
15#include <linux/sunrpc/clnt.h>
16#include <linux/nfsd/nfsd.h>
17#include <linux/lockd/lockd.h>
18#include <linux/lockd/share.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070019
20#define NLMDBG_FACILITY NLMDBG_CLIENT
21
Linus Torvalds1da177e2005-04-16 15:20:36 -070022#ifdef CONFIG_LOCKD_V4
Al Viro52921e02006-10-19 23:28:46 -070023static __be32
24cast_to_nlm(__be32 status, u32 vers)
Linus Torvalds1da177e2005-04-16 15:20:36 -070025{
26 /* Note: status is assumed to be in network byte order !!! */
27 if (vers != 4){
28 switch (status) {
29 case nlm_granted:
30 case nlm_lck_denied:
31 case nlm_lck_denied_nolocks:
32 case nlm_lck_blocked:
33 case nlm_lck_denied_grace_period:
Marc Eshel5ea0d752006-11-28 16:27:06 -050034 case nlm_drop_reply:
Linus Torvalds1da177e2005-04-16 15:20:36 -070035 break;
36 case nlm4_deadlock:
37 status = nlm_lck_denied;
38 break;
39 default:
40 status = nlm_lck_denied_nolocks;
41 }
42 }
43
44 return (status);
45}
46#define cast_status(status) (cast_to_nlm(status, rqstp->rq_vers))
47#else
48#define cast_status(status) (status)
49#endif
50
51/*
52 * Obtain client and file from arguments
53 */
Al Viro52921e02006-10-19 23:28:46 -070054static __be32
Linus Torvalds1da177e2005-04-16 15:20:36 -070055nlmsvc_retrieve_args(struct svc_rqst *rqstp, struct nlm_args *argp,
56 struct nlm_host **hostp, struct nlm_file **filp)
57{
58 struct nlm_host *host = NULL;
59 struct nlm_file *file = NULL;
60 struct nlm_lock *lock = &argp->lock;
Al Viro52921e02006-10-19 23:28:46 -070061 __be32 error = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -070062
63 /* nfsd callbacks must have been installed for this procedure */
64 if (!nlmsvc_ops)
65 return nlm_lck_denied_nolocks;
66
67 /* Obtain host handle */
Olaf Kirchdb4e4c92006-10-04 02:15:52 -070068 if (!(host = nlmsvc_lookup_host(rqstp, lock->caller, lock->len))
Olaf Kirch977faf32006-10-04 02:15:51 -070069 || (argp->monitor && nsm_monitor(host) < 0))
Linus Torvalds1da177e2005-04-16 15:20:36 -070070 goto no_locks;
71 *hostp = host;
72
73 /* Obtain file pointer. Not used by FREE_ALL call. */
74 if (filp != NULL) {
75 if ((error = nlm_lookup_file(rqstp, &file, &lock->fh)) != 0)
76 goto no_locks;
77 *filp = file;
78
79 /* Set up the missing parts of the file_lock structure */
80 lock->fl.fl_file = file->f_file;
81 lock->fl.fl_owner = (fl_owner_t) host;
82 lock->fl.fl_lmops = &nlmsvc_lock_operations;
83 }
84
85 return 0;
86
87no_locks:
Jeff Laytonb0e92aa2008-07-15 12:35:20 -040088 nlm_release_host(host);
NeilBrownd343fce2006-10-17 00:10:18 -070089 if (error)
90 return error;
Linus Torvalds1da177e2005-04-16 15:20:36 -070091 return nlm_lck_denied_nolocks;
92}
93
94/*
95 * NULL: Test for presence of service
96 */
Al Viro7111c662006-10-19 23:28:45 -070097static __be32
Linus Torvalds1da177e2005-04-16 15:20:36 -070098nlmsvc_proc_null(struct svc_rqst *rqstp, void *argp, void *resp)
99{
100 dprintk("lockd: NULL called\n");
101 return rpc_success;
102}
103
104/*
105 * TEST: Check for conflicting lock
106 */
Al Viro7111c662006-10-19 23:28:45 -0700107static __be32
Linus Torvalds1da177e2005-04-16 15:20:36 -0700108nlmsvc_proc_test(struct svc_rqst *rqstp, struct nlm_args *argp,
109 struct nlm_res *resp)
110{
111 struct nlm_host *host;
112 struct nlm_file *file;
Harvey Harrison317602f2008-07-20 23:41:24 -0700113 __be32 rc = rpc_success;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700114
115 dprintk("lockd: TEST called\n");
116 resp->cookie = argp->cookie;
117
Linus Torvalds1da177e2005-04-16 15:20:36 -0700118 /* Obtain client and file */
119 if ((resp->status = nlmsvc_retrieve_args(rqstp, argp, &host, &file)))
NeilBrownd343fce2006-10-17 00:10:18 -0700120 return resp->status == nlm_drop_reply ? rpc_drop_reply :rpc_success;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700121
122 /* Now check for conflicting locks */
Jeff Layton8f920d52008-07-15 14:06:48 -0400123 resp->status = cast_status(nlmsvc_testlock(rqstp, file, host, &argp->lock, &resp->lock, &resp->cookie));
Marc Eshel5ea0d752006-11-28 16:27:06 -0500124 if (resp->status == nlm_drop_reply)
Oleg Drokinb7e6b862007-11-26 13:35:11 -0500125 rc = rpc_drop_reply;
126 else
127 dprintk("lockd: TEST status %d vers %d\n",
128 ntohl(resp->status), rqstp->rq_vers);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700129
Linus Torvalds1da177e2005-04-16 15:20:36 -0700130 nlm_release_host(host);
131 nlm_release_file(file);
Oleg Drokinb7e6b862007-11-26 13:35:11 -0500132 return rc;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700133}
134
Al Viro7111c662006-10-19 23:28:45 -0700135static __be32
Linus Torvalds1da177e2005-04-16 15:20:36 -0700136nlmsvc_proc_lock(struct svc_rqst *rqstp, struct nlm_args *argp,
137 struct nlm_res *resp)
138{
139 struct nlm_host *host;
140 struct nlm_file *file;
Harvey Harrison317602f2008-07-20 23:41:24 -0700141 __be32 rc = rpc_success;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700142
143 dprintk("lockd: LOCK called\n");
144
145 resp->cookie = argp->cookie;
146
Linus Torvalds1da177e2005-04-16 15:20:36 -0700147 /* Obtain client and file */
148 if ((resp->status = nlmsvc_retrieve_args(rqstp, argp, &host, &file)))
NeilBrownd343fce2006-10-17 00:10:18 -0700149 return resp->status == nlm_drop_reply ? rpc_drop_reply :rpc_success;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700150
151#if 0
152 /* If supplied state doesn't match current state, we assume it's
153 * an old request that time-warped somehow. Any error return would
154 * do in this case because it's irrelevant anyway.
155 *
156 * NB: We don't retrieve the remote host's state yet.
157 */
158 if (host->h_nsmstate && host->h_nsmstate != argp->state) {
159 resp->status = nlm_lck_denied_nolocks;
160 } else
161#endif
162
163 /* Now try to lock the file */
Jeff Layton6cde4de2008-07-15 14:26:17 -0400164 resp->status = cast_status(nlmsvc_lock(rqstp, file, host, &argp->lock,
J. Bruce Fieldsb2b50282008-02-06 13:59:23 -0500165 argp->block, &argp->cookie,
166 argp->reclaim));
Marc Eshel1a8322b2006-11-28 16:27:06 -0500167 if (resp->status == nlm_drop_reply)
Oleg Drokinb7e6b862007-11-26 13:35:11 -0500168 rc = rpc_drop_reply;
169 else
170 dprintk("lockd: LOCK status %d\n", ntohl(resp->status));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700171
Linus Torvalds1da177e2005-04-16 15:20:36 -0700172 nlm_release_host(host);
173 nlm_release_file(file);
Oleg Drokinb7e6b862007-11-26 13:35:11 -0500174 return rc;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700175}
176
Al Viro7111c662006-10-19 23:28:45 -0700177static __be32
Linus Torvalds1da177e2005-04-16 15:20:36 -0700178nlmsvc_proc_cancel(struct svc_rqst *rqstp, struct nlm_args *argp,
179 struct nlm_res *resp)
180{
181 struct nlm_host *host;
182 struct nlm_file *file;
183
184 dprintk("lockd: CANCEL called\n");
185
186 resp->cookie = argp->cookie;
187
188 /* Don't accept requests during grace period */
J. Bruce Fieldsaf558e32007-09-06 12:34:25 -0400189 if (locks_in_grace()) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700190 resp->status = nlm_lck_denied_grace_period;
191 return rpc_success;
192 }
193
194 /* Obtain client and file */
195 if ((resp->status = nlmsvc_retrieve_args(rqstp, argp, &host, &file)))
NeilBrownd343fce2006-10-17 00:10:18 -0700196 return resp->status == nlm_drop_reply ? rpc_drop_reply :rpc_success;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700197
198 /* Try to cancel request. */
199 resp->status = cast_status(nlmsvc_cancel_blocked(file, &argp->lock));
200
201 dprintk("lockd: CANCEL status %d\n", ntohl(resp->status));
202 nlm_release_host(host);
203 nlm_release_file(file);
204 return rpc_success;
205}
206
207/*
208 * UNLOCK: release a lock
209 */
Al Viro7111c662006-10-19 23:28:45 -0700210static __be32
Linus Torvalds1da177e2005-04-16 15:20:36 -0700211nlmsvc_proc_unlock(struct svc_rqst *rqstp, struct nlm_args *argp,
212 struct nlm_res *resp)
213{
214 struct nlm_host *host;
215 struct nlm_file *file;
216
217 dprintk("lockd: UNLOCK called\n");
218
219 resp->cookie = argp->cookie;
220
221 /* Don't accept new lock requests during grace period */
J. Bruce Fieldsaf558e32007-09-06 12:34:25 -0400222 if (locks_in_grace()) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700223 resp->status = nlm_lck_denied_grace_period;
224 return rpc_success;
225 }
226
227 /* Obtain client and file */
228 if ((resp->status = nlmsvc_retrieve_args(rqstp, argp, &host, &file)))
NeilBrownd343fce2006-10-17 00:10:18 -0700229 return resp->status == nlm_drop_reply ? rpc_drop_reply :rpc_success;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700230
231 /* Now try to remove the lock */
232 resp->status = cast_status(nlmsvc_unlock(file, &argp->lock));
233
234 dprintk("lockd: UNLOCK status %d\n", ntohl(resp->status));
235 nlm_release_host(host);
236 nlm_release_file(file);
237 return rpc_success;
238}
239
240/*
241 * GRANTED: A server calls us to tell that a process' lock request
242 * was granted
243 */
Al Viro7111c662006-10-19 23:28:45 -0700244static __be32
Linus Torvalds1da177e2005-04-16 15:20:36 -0700245nlmsvc_proc_granted(struct svc_rqst *rqstp, struct nlm_args *argp,
246 struct nlm_res *resp)
247{
248 resp->cookie = argp->cookie;
249
250 dprintk("lockd: GRANTED called\n");
Chuck Leverdcff09f2008-10-03 12:50:36 -0400251 resp->status = nlmclnt_grant(svc_addr(rqstp), &argp->lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700252 dprintk("lockd: GRANTED status %d\n", ntohl(resp->status));
253 return rpc_success;
254}
255
256/*
Trond Myklebustd4716622006-03-20 13:44:45 -0500257 * This is the generic lockd callback for async RPC calls
258 */
259static void nlmsvc_callback_exit(struct rpc_task *task, void *data)
260{
Chuck Leverc041b5f2006-12-05 16:36:03 -0500261 dprintk("lockd: %5u callback returned %d\n", task->tk_pid,
Trond Myklebustd4716622006-03-20 13:44:45 -0500262 -task->tk_status);
263}
264
265static void nlmsvc_callback_release(void *data)
266{
Trond Myklebusta86dc492008-06-11 13:37:09 -0400267 lock_kernel();
Trond Myklebustd4716622006-03-20 13:44:45 -0500268 nlm_release_call(data);
Trond Myklebusta86dc492008-06-11 13:37:09 -0400269 unlock_kernel();
Trond Myklebustd4716622006-03-20 13:44:45 -0500270}
271
272static const struct rpc_call_ops nlmsvc_callback_ops = {
273 .rpc_call_done = nlmsvc_callback_exit,
274 .rpc_release = nlmsvc_callback_release,
275};
276
277/*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700278 * `Async' versions of the above service routines. They aren't really,
279 * because we send the callback before the reply proper. I hope this
280 * doesn't break any clients.
281 */
Al Viro7111c662006-10-19 23:28:45 -0700282static __be32 nlmsvc_callback(struct svc_rqst *rqstp, u32 proc, struct nlm_args *argp,
283 __be32 (*func)(struct svc_rqst *, struct nlm_args *, struct nlm_res *))
Trond Myklebustd4716622006-03-20 13:44:45 -0500284{
285 struct nlm_host *host;
286 struct nlm_rqst *call;
Al Viro7111c662006-10-19 23:28:45 -0700287 __be32 stat;
Trond Myklebustd4716622006-03-20 13:44:45 -0500288
Olaf Kirchdb4e4c92006-10-04 02:15:52 -0700289 host = nlmsvc_lookup_host(rqstp,
290 argp->lock.caller,
291 argp->lock.len);
Trond Myklebustd4716622006-03-20 13:44:45 -0500292 if (host == NULL)
293 return rpc_system_err;
294
295 call = nlm_alloc_call(host);
296 if (call == NULL)
297 return rpc_system_err;
298
299 stat = func(rqstp, argp, &call->a_res);
300 if (stat != 0) {
301 nlm_release_call(call);
302 return stat;
303 }
304
305 call->a_flags = RPC_TASK_ASYNC;
306 if (nlm_async_reply(call, proc, &nlmsvc_callback_ops) < 0)
307 return rpc_system_err;
308 return rpc_success;
309}
310
Al Viro7111c662006-10-19 23:28:45 -0700311static __be32 nlmsvc_proc_test_msg(struct svc_rqst *rqstp, struct nlm_args *argp,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700312 void *resp)
313{
Linus Torvalds1da177e2005-04-16 15:20:36 -0700314 dprintk("lockd: TEST_MSG called\n");
Trond Myklebustd4716622006-03-20 13:44:45 -0500315 return nlmsvc_callback(rqstp, NLMPROC_TEST_RES, argp, nlmsvc_proc_test);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700316}
317
Al Viro7111c662006-10-19 23:28:45 -0700318static __be32 nlmsvc_proc_lock_msg(struct svc_rqst *rqstp, struct nlm_args *argp,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700319 void *resp)
320{
Linus Torvalds1da177e2005-04-16 15:20:36 -0700321 dprintk("lockd: LOCK_MSG called\n");
Trond Myklebustd4716622006-03-20 13:44:45 -0500322 return nlmsvc_callback(rqstp, NLMPROC_LOCK_RES, argp, nlmsvc_proc_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700323}
324
Al Viro7111c662006-10-19 23:28:45 -0700325static __be32 nlmsvc_proc_cancel_msg(struct svc_rqst *rqstp, struct nlm_args *argp,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700326 void *resp)
327{
Linus Torvalds1da177e2005-04-16 15:20:36 -0700328 dprintk("lockd: CANCEL_MSG called\n");
Trond Myklebustd4716622006-03-20 13:44:45 -0500329 return nlmsvc_callback(rqstp, NLMPROC_CANCEL_RES, argp, nlmsvc_proc_cancel);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700330}
331
Al Viro7111c662006-10-19 23:28:45 -0700332static __be32
Linus Torvalds1da177e2005-04-16 15:20:36 -0700333nlmsvc_proc_unlock_msg(struct svc_rqst *rqstp, struct nlm_args *argp,
334 void *resp)
335{
Linus Torvalds1da177e2005-04-16 15:20:36 -0700336 dprintk("lockd: UNLOCK_MSG called\n");
Trond Myklebustd4716622006-03-20 13:44:45 -0500337 return nlmsvc_callback(rqstp, NLMPROC_UNLOCK_RES, argp, nlmsvc_proc_unlock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700338}
339
Al Viro7111c662006-10-19 23:28:45 -0700340static __be32
Linus Torvalds1da177e2005-04-16 15:20:36 -0700341nlmsvc_proc_granted_msg(struct svc_rqst *rqstp, struct nlm_args *argp,
342 void *resp)
343{
Linus Torvalds1da177e2005-04-16 15:20:36 -0700344 dprintk("lockd: GRANTED_MSG called\n");
Trond Myklebustd4716622006-03-20 13:44:45 -0500345 return nlmsvc_callback(rqstp, NLMPROC_GRANTED_RES, argp, nlmsvc_proc_granted);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700346}
347
348/*
349 * SHARE: create a DOS share or alter existing share.
350 */
Al Viro7111c662006-10-19 23:28:45 -0700351static __be32
Linus Torvalds1da177e2005-04-16 15:20:36 -0700352nlmsvc_proc_share(struct svc_rqst *rqstp, struct nlm_args *argp,
353 struct nlm_res *resp)
354{
355 struct nlm_host *host;
356 struct nlm_file *file;
357
358 dprintk("lockd: SHARE called\n");
359
360 resp->cookie = argp->cookie;
361
362 /* Don't accept new lock requests during grace period */
J. Bruce Fieldsaf558e32007-09-06 12:34:25 -0400363 if (locks_in_grace() && !argp->reclaim) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700364 resp->status = nlm_lck_denied_grace_period;
365 return rpc_success;
366 }
367
368 /* Obtain client and file */
369 if ((resp->status = nlmsvc_retrieve_args(rqstp, argp, &host, &file)))
NeilBrownd343fce2006-10-17 00:10:18 -0700370 return resp->status == nlm_drop_reply ? rpc_drop_reply :rpc_success;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700371
372 /* Now try to create the share */
373 resp->status = cast_status(nlmsvc_share_file(host, file, argp));
374
375 dprintk("lockd: SHARE status %d\n", ntohl(resp->status));
376 nlm_release_host(host);
377 nlm_release_file(file);
378 return rpc_success;
379}
380
381/*
382 * UNSHARE: Release a DOS share.
383 */
Al Viro7111c662006-10-19 23:28:45 -0700384static __be32
Linus Torvalds1da177e2005-04-16 15:20:36 -0700385nlmsvc_proc_unshare(struct svc_rqst *rqstp, struct nlm_args *argp,
386 struct nlm_res *resp)
387{
388 struct nlm_host *host;
389 struct nlm_file *file;
390
391 dprintk("lockd: UNSHARE called\n");
392
393 resp->cookie = argp->cookie;
394
395 /* Don't accept requests during grace period */
J. Bruce Fieldsaf558e32007-09-06 12:34:25 -0400396 if (locks_in_grace()) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700397 resp->status = nlm_lck_denied_grace_period;
398 return rpc_success;
399 }
400
401 /* Obtain client and file */
402 if ((resp->status = nlmsvc_retrieve_args(rqstp, argp, &host, &file)))
NeilBrownd343fce2006-10-17 00:10:18 -0700403 return resp->status == nlm_drop_reply ? rpc_drop_reply :rpc_success;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700404
405 /* Now try to unshare the file */
406 resp->status = cast_status(nlmsvc_unshare_file(host, file, argp));
407
408 dprintk("lockd: UNSHARE status %d\n", ntohl(resp->status));
409 nlm_release_host(host);
410 nlm_release_file(file);
411 return rpc_success;
412}
413
414/*
415 * NM_LOCK: Create an unmonitored lock
416 */
Al Viro7111c662006-10-19 23:28:45 -0700417static __be32
Linus Torvalds1da177e2005-04-16 15:20:36 -0700418nlmsvc_proc_nm_lock(struct svc_rqst *rqstp, struct nlm_args *argp,
419 struct nlm_res *resp)
420{
421 dprintk("lockd: NM_LOCK called\n");
422
423 argp->monitor = 0; /* just clean the monitor flag */
424 return nlmsvc_proc_lock(rqstp, argp, resp);
425}
426
427/*
428 * FREE_ALL: Release all locks and shares held by client
429 */
Al Viro7111c662006-10-19 23:28:45 -0700430static __be32
Linus Torvalds1da177e2005-04-16 15:20:36 -0700431nlmsvc_proc_free_all(struct svc_rqst *rqstp, struct nlm_args *argp,
432 void *resp)
433{
434 struct nlm_host *host;
435
436 /* Obtain client */
437 if (nlmsvc_retrieve_args(rqstp, argp, &host, NULL))
438 return rpc_success;
439
440 nlmsvc_free_host_resources(host);
441 nlm_release_host(host);
442 return rpc_success;
443}
444
445/*
446 * SM_NOTIFY: private callback from statd (not part of official NLM proto)
447 */
Al Viro7111c662006-10-19 23:28:45 -0700448static __be32
Linus Torvalds1da177e2005-04-16 15:20:36 -0700449nlmsvc_proc_sm_notify(struct svc_rqst *rqstp, struct nlm_reboot *argp,
450 void *resp)
451{
Linus Torvalds1da177e2005-04-16 15:20:36 -0700452 dprintk("lockd: SM_NOTIFY called\n");
Chuck Leverb85e4672008-10-03 12:50:44 -0400453
454 if (!nlm_privileged_requester(rqstp)) {
Chuck Leverad06e4b2007-02-12 00:53:32 -0800455 char buf[RPC_MAX_ADDRBUFLEN];
456 printk(KERN_WARNING "lockd: rejected NSM callback from %s\n",
457 svc_print_addr(rqstp, buf, sizeof(buf)));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700458 return rpc_system_err;
459 }
460
Chuck Lever7fefc9c2008-12-05 19:03:31 -0500461 nlm_host_rebooted(argp);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700462 return rpc_success;
463}
464
465/*
466 * client sent a GRANTED_RES, let's remove the associated block
467 */
Al Viro7111c662006-10-19 23:28:45 -0700468static __be32
Linus Torvalds1da177e2005-04-16 15:20:36 -0700469nlmsvc_proc_granted_res(struct svc_rqst *rqstp, struct nlm_res *argp,
470 void *resp)
471{
472 if (!nlmsvc_ops)
473 return rpc_success;
474
475 dprintk("lockd: GRANTED_RES called\n");
476
Olaf Kirch39be4502006-10-04 02:16:03 -0700477 nlmsvc_grant_reply(&argp->cookie, argp->status);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700478 return rpc_success;
479}
480
481/*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700482 * NLM Server procedures.
483 */
484
485#define nlmsvc_encode_norep nlmsvc_encode_void
486#define nlmsvc_decode_norep nlmsvc_decode_void
487#define nlmsvc_decode_testres nlmsvc_decode_void
488#define nlmsvc_decode_lockres nlmsvc_decode_void
489#define nlmsvc_decode_unlockres nlmsvc_decode_void
490#define nlmsvc_decode_cancelres nlmsvc_decode_void
491#define nlmsvc_decode_grantedres nlmsvc_decode_void
492
493#define nlmsvc_proc_none nlmsvc_proc_null
494#define nlmsvc_proc_test_res nlmsvc_proc_null
495#define nlmsvc_proc_lock_res nlmsvc_proc_null
496#define nlmsvc_proc_cancel_res nlmsvc_proc_null
497#define nlmsvc_proc_unlock_res nlmsvc_proc_null
498
499struct nlm_void { int dummy; };
500
501#define PROC(name, xargt, xrest, argt, rest, respsize) \
502 { .pc_func = (svc_procfunc) nlmsvc_proc_##name, \
503 .pc_decode = (kxdrproc_t) nlmsvc_decode_##xargt, \
504 .pc_encode = (kxdrproc_t) nlmsvc_encode_##xrest, \
505 .pc_release = NULL, \
506 .pc_argsize = sizeof(struct nlm_##argt), \
507 .pc_ressize = sizeof(struct nlm_##rest), \
508 .pc_xdrressize = respsize, \
509 }
510
511#define Ck (1+XDR_QUADLEN(NLM_MAXCOOKIELEN)) /* cookie */
512#define St 1 /* status */
513#define No (1+1024/4) /* Net Obj */
514#define Rg 2 /* range - offset + size */
515
516struct svc_procedure nlmsvc_procedures[] = {
517 PROC(null, void, void, void, void, 1),
518 PROC(test, testargs, testres, args, res, Ck+St+2+No+Rg),
519 PROC(lock, lockargs, res, args, res, Ck+St),
520 PROC(cancel, cancargs, res, args, res, Ck+St),
521 PROC(unlock, unlockargs, res, args, res, Ck+St),
522 PROC(granted, testargs, res, args, res, Ck+St),
523 PROC(test_msg, testargs, norep, args, void, 1),
524 PROC(lock_msg, lockargs, norep, args, void, 1),
525 PROC(cancel_msg, cancargs, norep, args, void, 1),
526 PROC(unlock_msg, unlockargs, norep, args, void, 1),
527 PROC(granted_msg, testargs, norep, args, void, 1),
528 PROC(test_res, testres, norep, res, void, 1),
529 PROC(lock_res, lockres, norep, res, void, 1),
530 PROC(cancel_res, cancelres, norep, res, void, 1),
531 PROC(unlock_res, unlockres, norep, res, void, 1),
532 PROC(granted_res, res, norep, res, void, 1),
533 /* statd callback */
534 PROC(sm_notify, reboot, void, reboot, void, 1),
535 PROC(none, void, void, void, void, 1),
536 PROC(none, void, void, void, void, 1),
537 PROC(none, void, void, void, void, 1),
538 PROC(share, shareargs, shareres, args, res, Ck+St+1),
539 PROC(unshare, shareargs, shareres, args, res, Ck+St+1),
540 PROC(nm_lock, lockargs, res, args, res, Ck+St),
541 PROC(free_all, notify, void, args, void, 0),
542
543};