blob: 88379cc6e0b1c0ee196c8686c3f0e7c46cabef9a [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>
19#include <linux/lockd/sm_inter.h>
20
21
22#define NLMDBG_FACILITY NLMDBG_CLIENT
23
Linus Torvalds1da177e2005-04-16 15:20:36 -070024#ifdef CONFIG_LOCKD_V4
Al Viro52921e02006-10-19 23:28:46 -070025static __be32
26cast_to_nlm(__be32 status, u32 vers)
Linus Torvalds1da177e2005-04-16 15:20:36 -070027{
28 /* Note: status is assumed to be in network byte order !!! */
29 if (vers != 4){
30 switch (status) {
31 case nlm_granted:
32 case nlm_lck_denied:
33 case nlm_lck_denied_nolocks:
34 case nlm_lck_blocked:
35 case nlm_lck_denied_grace_period:
Marc Eshel5ea0d752006-11-28 16:27:06 -050036 case nlm_drop_reply:
Linus Torvalds1da177e2005-04-16 15:20:36 -070037 break;
38 case nlm4_deadlock:
39 status = nlm_lck_denied;
40 break;
41 default:
42 status = nlm_lck_denied_nolocks;
43 }
44 }
45
46 return (status);
47}
48#define cast_status(status) (cast_to_nlm(status, rqstp->rq_vers))
49#else
50#define cast_status(status) (status)
51#endif
52
53/*
54 * Obtain client and file from arguments
55 */
Al Viro52921e02006-10-19 23:28:46 -070056static __be32
Linus Torvalds1da177e2005-04-16 15:20:36 -070057nlmsvc_retrieve_args(struct svc_rqst *rqstp, struct nlm_args *argp,
58 struct nlm_host **hostp, struct nlm_file **filp)
59{
60 struct nlm_host *host = NULL;
61 struct nlm_file *file = NULL;
62 struct nlm_lock *lock = &argp->lock;
Al Viro52921e02006-10-19 23:28:46 -070063 __be32 error = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -070064
65 /* nfsd callbacks must have been installed for this procedure */
66 if (!nlmsvc_ops)
67 return nlm_lck_denied_nolocks;
68
69 /* Obtain host handle */
Olaf Kirchdb4e4c92006-10-04 02:15:52 -070070 if (!(host = nlmsvc_lookup_host(rqstp, lock->caller, lock->len))
Olaf Kirch977faf32006-10-04 02:15:51 -070071 || (argp->monitor && nsm_monitor(host) < 0))
Linus Torvalds1da177e2005-04-16 15:20:36 -070072 goto no_locks;
73 *hostp = host;
74
75 /* Obtain file pointer. Not used by FREE_ALL call. */
76 if (filp != NULL) {
77 if ((error = nlm_lookup_file(rqstp, &file, &lock->fh)) != 0)
78 goto no_locks;
79 *filp = file;
80
81 /* Set up the missing parts of the file_lock structure */
82 lock->fl.fl_file = file->f_file;
83 lock->fl.fl_owner = (fl_owner_t) host;
84 lock->fl.fl_lmops = &nlmsvc_lock_operations;
85 }
86
87 return 0;
88
89no_locks:
90 if (host)
91 nlm_release_host(host);
NeilBrownd343fce2006-10-17 00:10:18 -070092 if (error)
93 return error;
Linus Torvalds1da177e2005-04-16 15:20:36 -070094 return nlm_lck_denied_nolocks;
95}
96
97/*
98 * NULL: Test for presence of service
99 */
Al Viro7111c662006-10-19 23:28:45 -0700100static __be32
Linus Torvalds1da177e2005-04-16 15:20:36 -0700101nlmsvc_proc_null(struct svc_rqst *rqstp, void *argp, void *resp)
102{
103 dprintk("lockd: NULL called\n");
104 return rpc_success;
105}
106
107/*
108 * TEST: Check for conflicting lock
109 */
Al Viro7111c662006-10-19 23:28:45 -0700110static __be32
Linus Torvalds1da177e2005-04-16 15:20:36 -0700111nlmsvc_proc_test(struct svc_rqst *rqstp, struct nlm_args *argp,
112 struct nlm_res *resp)
113{
114 struct nlm_host *host;
115 struct nlm_file *file;
Oleg Drokinb7e6b862007-11-26 13:35:11 -0500116 int rc = rpc_success;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700117
118 dprintk("lockd: TEST called\n");
119 resp->cookie = argp->cookie;
120
121 /* Don't accept test requests during grace period */
122 if (nlmsvc_grace_period) {
123 resp->status = nlm_lck_denied_grace_period;
Oleg Drokinb7e6b862007-11-26 13:35:11 -0500124 return rc;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700125 }
126
127 /* Obtain client and file */
128 if ((resp->status = nlmsvc_retrieve_args(rqstp, argp, &host, &file)))
NeilBrownd343fce2006-10-17 00:10:18 -0700129 return resp->status == nlm_drop_reply ? rpc_drop_reply :rpc_success;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700130
131 /* Now check for conflicting locks */
Marc Eshel85f3f1b32006-11-28 16:27:06 -0500132 resp->status = cast_status(nlmsvc_testlock(rqstp, file, &argp->lock, &resp->lock, &resp->cookie));
Marc Eshel5ea0d752006-11-28 16:27:06 -0500133 if (resp->status == nlm_drop_reply)
Oleg Drokinb7e6b862007-11-26 13:35:11 -0500134 rc = rpc_drop_reply;
135 else
136 dprintk("lockd: TEST status %d vers %d\n",
137 ntohl(resp->status), rqstp->rq_vers);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700138
Linus Torvalds1da177e2005-04-16 15:20:36 -0700139 nlm_release_host(host);
140 nlm_release_file(file);
Oleg Drokinb7e6b862007-11-26 13:35:11 -0500141 return rc;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700142}
143
Al Viro7111c662006-10-19 23:28:45 -0700144static __be32
Linus Torvalds1da177e2005-04-16 15:20:36 -0700145nlmsvc_proc_lock(struct svc_rqst *rqstp, struct nlm_args *argp,
146 struct nlm_res *resp)
147{
148 struct nlm_host *host;
149 struct nlm_file *file;
Oleg Drokinb7e6b862007-11-26 13:35:11 -0500150 int rc = rpc_success;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700151
152 dprintk("lockd: LOCK called\n");
153
154 resp->cookie = argp->cookie;
155
156 /* Don't accept new lock requests during grace period */
157 if (nlmsvc_grace_period && !argp->reclaim) {
158 resp->status = nlm_lck_denied_grace_period;
Oleg Drokinb7e6b862007-11-26 13:35:11 -0500159 return rc;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700160 }
161
162 /* Obtain client and file */
163 if ((resp->status = nlmsvc_retrieve_args(rqstp, argp, &host, &file)))
NeilBrownd343fce2006-10-17 00:10:18 -0700164 return resp->status == nlm_drop_reply ? rpc_drop_reply :rpc_success;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700165
166#if 0
167 /* If supplied state doesn't match current state, we assume it's
168 * an old request that time-warped somehow. Any error return would
169 * do in this case because it's irrelevant anyway.
170 *
171 * NB: We don't retrieve the remote host's state yet.
172 */
173 if (host->h_nsmstate && host->h_nsmstate != argp->state) {
174 resp->status = nlm_lck_denied_nolocks;
175 } else
176#endif
177
178 /* Now try to lock the file */
179 resp->status = cast_status(nlmsvc_lock(rqstp, file, &argp->lock,
180 argp->block, &argp->cookie));
Marc Eshel1a8322b2006-11-28 16:27:06 -0500181 if (resp->status == nlm_drop_reply)
Oleg Drokinb7e6b862007-11-26 13:35:11 -0500182 rc = rpc_drop_reply;
183 else
184 dprintk("lockd: LOCK status %d\n", ntohl(resp->status));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700185
Linus Torvalds1da177e2005-04-16 15:20:36 -0700186 nlm_release_host(host);
187 nlm_release_file(file);
Oleg Drokinb7e6b862007-11-26 13:35:11 -0500188 return rc;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700189}
190
Al Viro7111c662006-10-19 23:28:45 -0700191static __be32
Linus Torvalds1da177e2005-04-16 15:20:36 -0700192nlmsvc_proc_cancel(struct svc_rqst *rqstp, struct nlm_args *argp,
193 struct nlm_res *resp)
194{
195 struct nlm_host *host;
196 struct nlm_file *file;
197
198 dprintk("lockd: CANCEL called\n");
199
200 resp->cookie = argp->cookie;
201
202 /* Don't accept requests during grace period */
203 if (nlmsvc_grace_period) {
204 resp->status = nlm_lck_denied_grace_period;
205 return rpc_success;
206 }
207
208 /* Obtain client and file */
209 if ((resp->status = nlmsvc_retrieve_args(rqstp, argp, &host, &file)))
NeilBrownd343fce2006-10-17 00:10:18 -0700210 return resp->status == nlm_drop_reply ? rpc_drop_reply :rpc_success;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700211
212 /* Try to cancel request. */
213 resp->status = cast_status(nlmsvc_cancel_blocked(file, &argp->lock));
214
215 dprintk("lockd: CANCEL status %d\n", ntohl(resp->status));
216 nlm_release_host(host);
217 nlm_release_file(file);
218 return rpc_success;
219}
220
221/*
222 * UNLOCK: release a lock
223 */
Al Viro7111c662006-10-19 23:28:45 -0700224static __be32
Linus Torvalds1da177e2005-04-16 15:20:36 -0700225nlmsvc_proc_unlock(struct svc_rqst *rqstp, struct nlm_args *argp,
226 struct nlm_res *resp)
227{
228 struct nlm_host *host;
229 struct nlm_file *file;
230
231 dprintk("lockd: UNLOCK called\n");
232
233 resp->cookie = argp->cookie;
234
235 /* Don't accept new lock requests during grace period */
236 if (nlmsvc_grace_period) {
237 resp->status = nlm_lck_denied_grace_period;
238 return rpc_success;
239 }
240
241 /* Obtain client and file */
242 if ((resp->status = nlmsvc_retrieve_args(rqstp, argp, &host, &file)))
NeilBrownd343fce2006-10-17 00:10:18 -0700243 return resp->status == nlm_drop_reply ? rpc_drop_reply :rpc_success;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700244
245 /* Now try to remove the lock */
246 resp->status = cast_status(nlmsvc_unlock(file, &argp->lock));
247
248 dprintk("lockd: UNLOCK status %d\n", ntohl(resp->status));
249 nlm_release_host(host);
250 nlm_release_file(file);
251 return rpc_success;
252}
253
254/*
255 * GRANTED: A server calls us to tell that a process' lock request
256 * was granted
257 */
Al Viro7111c662006-10-19 23:28:45 -0700258static __be32
Linus Torvalds1da177e2005-04-16 15:20:36 -0700259nlmsvc_proc_granted(struct svc_rqst *rqstp, struct nlm_args *argp,
260 struct nlm_res *resp)
261{
262 resp->cookie = argp->cookie;
263
264 dprintk("lockd: GRANTED called\n");
Chuck Lever27459f02007-02-12 00:53:34 -0800265 resp->status = nlmclnt_grant(svc_addr_in(rqstp), &argp->lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700266 dprintk("lockd: GRANTED status %d\n", ntohl(resp->status));
267 return rpc_success;
268}
269
270/*
Trond Myklebustd4716622006-03-20 13:44:45 -0500271 * This is the generic lockd callback for async RPC calls
272 */
273static void nlmsvc_callback_exit(struct rpc_task *task, void *data)
274{
Chuck Leverc041b5f2006-12-05 16:36:03 -0500275 dprintk("lockd: %5u callback returned %d\n", task->tk_pid,
Trond Myklebustd4716622006-03-20 13:44:45 -0500276 -task->tk_status);
277}
278
279static void nlmsvc_callback_release(void *data)
280{
281 nlm_release_call(data);
282}
283
284static const struct rpc_call_ops nlmsvc_callback_ops = {
285 .rpc_call_done = nlmsvc_callback_exit,
286 .rpc_release = nlmsvc_callback_release,
287};
288
289/*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700290 * `Async' versions of the above service routines. They aren't really,
291 * because we send the callback before the reply proper. I hope this
292 * doesn't break any clients.
293 */
Al Viro7111c662006-10-19 23:28:45 -0700294static __be32 nlmsvc_callback(struct svc_rqst *rqstp, u32 proc, struct nlm_args *argp,
295 __be32 (*func)(struct svc_rqst *, struct nlm_args *, struct nlm_res *))
Trond Myklebustd4716622006-03-20 13:44:45 -0500296{
297 struct nlm_host *host;
298 struct nlm_rqst *call;
Al Viro7111c662006-10-19 23:28:45 -0700299 __be32 stat;
Trond Myklebustd4716622006-03-20 13:44:45 -0500300
Olaf Kirchdb4e4c92006-10-04 02:15:52 -0700301 host = nlmsvc_lookup_host(rqstp,
302 argp->lock.caller,
303 argp->lock.len);
Trond Myklebustd4716622006-03-20 13:44:45 -0500304 if (host == NULL)
305 return rpc_system_err;
306
307 call = nlm_alloc_call(host);
308 if (call == NULL)
309 return rpc_system_err;
310
311 stat = func(rqstp, argp, &call->a_res);
312 if (stat != 0) {
313 nlm_release_call(call);
314 return stat;
315 }
316
317 call->a_flags = RPC_TASK_ASYNC;
318 if (nlm_async_reply(call, proc, &nlmsvc_callback_ops) < 0)
319 return rpc_system_err;
320 return rpc_success;
321}
322
Al Viro7111c662006-10-19 23:28:45 -0700323static __be32 nlmsvc_proc_test_msg(struct svc_rqst *rqstp, struct nlm_args *argp,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700324 void *resp)
325{
Linus Torvalds1da177e2005-04-16 15:20:36 -0700326 dprintk("lockd: TEST_MSG called\n");
Trond Myklebustd4716622006-03-20 13:44:45 -0500327 return nlmsvc_callback(rqstp, NLMPROC_TEST_RES, argp, nlmsvc_proc_test);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700328}
329
Al Viro7111c662006-10-19 23:28:45 -0700330static __be32 nlmsvc_proc_lock_msg(struct svc_rqst *rqstp, struct nlm_args *argp,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700331 void *resp)
332{
Linus Torvalds1da177e2005-04-16 15:20:36 -0700333 dprintk("lockd: LOCK_MSG called\n");
Trond Myklebustd4716622006-03-20 13:44:45 -0500334 return nlmsvc_callback(rqstp, NLMPROC_LOCK_RES, argp, nlmsvc_proc_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700335}
336
Al Viro7111c662006-10-19 23:28:45 -0700337static __be32 nlmsvc_proc_cancel_msg(struct svc_rqst *rqstp, struct nlm_args *argp,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700338 void *resp)
339{
Linus Torvalds1da177e2005-04-16 15:20:36 -0700340 dprintk("lockd: CANCEL_MSG called\n");
Trond Myklebustd4716622006-03-20 13:44:45 -0500341 return nlmsvc_callback(rqstp, NLMPROC_CANCEL_RES, argp, nlmsvc_proc_cancel);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700342}
343
Al Viro7111c662006-10-19 23:28:45 -0700344static __be32
Linus Torvalds1da177e2005-04-16 15:20:36 -0700345nlmsvc_proc_unlock_msg(struct svc_rqst *rqstp, struct nlm_args *argp,
346 void *resp)
347{
Linus Torvalds1da177e2005-04-16 15:20:36 -0700348 dprintk("lockd: UNLOCK_MSG called\n");
Trond Myklebustd4716622006-03-20 13:44:45 -0500349 return nlmsvc_callback(rqstp, NLMPROC_UNLOCK_RES, argp, nlmsvc_proc_unlock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700350}
351
Al Viro7111c662006-10-19 23:28:45 -0700352static __be32
Linus Torvalds1da177e2005-04-16 15:20:36 -0700353nlmsvc_proc_granted_msg(struct svc_rqst *rqstp, struct nlm_args *argp,
354 void *resp)
355{
Linus Torvalds1da177e2005-04-16 15:20:36 -0700356 dprintk("lockd: GRANTED_MSG called\n");
Trond Myklebustd4716622006-03-20 13:44:45 -0500357 return nlmsvc_callback(rqstp, NLMPROC_GRANTED_RES, argp, nlmsvc_proc_granted);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700358}
359
360/*
361 * SHARE: create a DOS share or alter existing share.
362 */
Al Viro7111c662006-10-19 23:28:45 -0700363static __be32
Linus Torvalds1da177e2005-04-16 15:20:36 -0700364nlmsvc_proc_share(struct svc_rqst *rqstp, struct nlm_args *argp,
365 struct nlm_res *resp)
366{
367 struct nlm_host *host;
368 struct nlm_file *file;
369
370 dprintk("lockd: SHARE called\n");
371
372 resp->cookie = argp->cookie;
373
374 /* Don't accept new lock requests during grace period */
375 if (nlmsvc_grace_period && !argp->reclaim) {
376 resp->status = nlm_lck_denied_grace_period;
377 return rpc_success;
378 }
379
380 /* Obtain client and file */
381 if ((resp->status = nlmsvc_retrieve_args(rqstp, argp, &host, &file)))
NeilBrownd343fce2006-10-17 00:10:18 -0700382 return resp->status == nlm_drop_reply ? rpc_drop_reply :rpc_success;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700383
384 /* Now try to create the share */
385 resp->status = cast_status(nlmsvc_share_file(host, file, argp));
386
387 dprintk("lockd: SHARE status %d\n", ntohl(resp->status));
388 nlm_release_host(host);
389 nlm_release_file(file);
390 return rpc_success;
391}
392
393/*
394 * UNSHARE: Release a DOS share.
395 */
Al Viro7111c662006-10-19 23:28:45 -0700396static __be32
Linus Torvalds1da177e2005-04-16 15:20:36 -0700397nlmsvc_proc_unshare(struct svc_rqst *rqstp, struct nlm_args *argp,
398 struct nlm_res *resp)
399{
400 struct nlm_host *host;
401 struct nlm_file *file;
402
403 dprintk("lockd: UNSHARE called\n");
404
405 resp->cookie = argp->cookie;
406
407 /* Don't accept requests during grace period */
408 if (nlmsvc_grace_period) {
409 resp->status = nlm_lck_denied_grace_period;
410 return rpc_success;
411 }
412
413 /* Obtain client and file */
414 if ((resp->status = nlmsvc_retrieve_args(rqstp, argp, &host, &file)))
NeilBrownd343fce2006-10-17 00:10:18 -0700415 return resp->status == nlm_drop_reply ? rpc_drop_reply :rpc_success;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700416
417 /* Now try to unshare the file */
418 resp->status = cast_status(nlmsvc_unshare_file(host, file, argp));
419
420 dprintk("lockd: UNSHARE status %d\n", ntohl(resp->status));
421 nlm_release_host(host);
422 nlm_release_file(file);
423 return rpc_success;
424}
425
426/*
427 * NM_LOCK: Create an unmonitored lock
428 */
Al Viro7111c662006-10-19 23:28:45 -0700429static __be32
Linus Torvalds1da177e2005-04-16 15:20:36 -0700430nlmsvc_proc_nm_lock(struct svc_rqst *rqstp, struct nlm_args *argp,
431 struct nlm_res *resp)
432{
433 dprintk("lockd: NM_LOCK called\n");
434
435 argp->monitor = 0; /* just clean the monitor flag */
436 return nlmsvc_proc_lock(rqstp, argp, resp);
437}
438
439/*
440 * FREE_ALL: Release all locks and shares held by client
441 */
Al Viro7111c662006-10-19 23:28:45 -0700442static __be32
Linus Torvalds1da177e2005-04-16 15:20:36 -0700443nlmsvc_proc_free_all(struct svc_rqst *rqstp, struct nlm_args *argp,
444 void *resp)
445{
446 struct nlm_host *host;
447
448 /* Obtain client */
449 if (nlmsvc_retrieve_args(rqstp, argp, &host, NULL))
450 return rpc_success;
451
452 nlmsvc_free_host_resources(host);
453 nlm_release_host(host);
454 return rpc_success;
455}
456
457/*
458 * SM_NOTIFY: private callback from statd (not part of official NLM proto)
459 */
Al Viro7111c662006-10-19 23:28:45 -0700460static __be32
Linus Torvalds1da177e2005-04-16 15:20:36 -0700461nlmsvc_proc_sm_notify(struct svc_rqst *rqstp, struct nlm_reboot *argp,
462 void *resp)
463{
Chuck Lever27459f02007-02-12 00:53:34 -0800464 struct sockaddr_in saddr;
465
466 memcpy(&saddr, svc_addr_in(rqstp), sizeof(saddr));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700467
468 dprintk("lockd: SM_NOTIFY called\n");
469 if (saddr.sin_addr.s_addr != htonl(INADDR_LOOPBACK)
470 || ntohs(saddr.sin_port) >= 1024) {
Chuck Leverad06e4b2007-02-12 00:53:32 -0800471 char buf[RPC_MAX_ADDRBUFLEN];
472 printk(KERN_WARNING "lockd: rejected NSM callback from %s\n",
473 svc_print_addr(rqstp, buf, sizeof(buf)));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700474 return rpc_system_err;
475 }
476
477 /* Obtain the host pointer for this NFS server and try to
478 * reclaim all locks we hold on this server.
479 */
Olaf Kirchcf712c22006-10-04 02:15:52 -0700480 memset(&saddr, 0, sizeof(saddr));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700481 saddr.sin_addr.s_addr = argp->addr;
Olaf Kirch5c8dd292006-10-04 02:15:55 -0700482 nlm_host_rebooted(&saddr, argp->mon, argp->len, argp->state);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700483
484 return rpc_success;
485}
486
487/*
488 * client sent a GRANTED_RES, let's remove the associated block
489 */
Al Viro7111c662006-10-19 23:28:45 -0700490static __be32
Linus Torvalds1da177e2005-04-16 15:20:36 -0700491nlmsvc_proc_granted_res(struct svc_rqst *rqstp, struct nlm_res *argp,
492 void *resp)
493{
494 if (!nlmsvc_ops)
495 return rpc_success;
496
497 dprintk("lockd: GRANTED_RES called\n");
498
Olaf Kirch39be4502006-10-04 02:16:03 -0700499 nlmsvc_grant_reply(&argp->cookie, argp->status);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700500 return rpc_success;
501}
502
503/*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700504 * NLM Server procedures.
505 */
506
507#define nlmsvc_encode_norep nlmsvc_encode_void
508#define nlmsvc_decode_norep nlmsvc_decode_void
509#define nlmsvc_decode_testres nlmsvc_decode_void
510#define nlmsvc_decode_lockres nlmsvc_decode_void
511#define nlmsvc_decode_unlockres nlmsvc_decode_void
512#define nlmsvc_decode_cancelres nlmsvc_decode_void
513#define nlmsvc_decode_grantedres nlmsvc_decode_void
514
515#define nlmsvc_proc_none nlmsvc_proc_null
516#define nlmsvc_proc_test_res nlmsvc_proc_null
517#define nlmsvc_proc_lock_res nlmsvc_proc_null
518#define nlmsvc_proc_cancel_res nlmsvc_proc_null
519#define nlmsvc_proc_unlock_res nlmsvc_proc_null
520
521struct nlm_void { int dummy; };
522
523#define PROC(name, xargt, xrest, argt, rest, respsize) \
524 { .pc_func = (svc_procfunc) nlmsvc_proc_##name, \
525 .pc_decode = (kxdrproc_t) nlmsvc_decode_##xargt, \
526 .pc_encode = (kxdrproc_t) nlmsvc_encode_##xrest, \
527 .pc_release = NULL, \
528 .pc_argsize = sizeof(struct nlm_##argt), \
529 .pc_ressize = sizeof(struct nlm_##rest), \
530 .pc_xdrressize = respsize, \
531 }
532
533#define Ck (1+XDR_QUADLEN(NLM_MAXCOOKIELEN)) /* cookie */
534#define St 1 /* status */
535#define No (1+1024/4) /* Net Obj */
536#define Rg 2 /* range - offset + size */
537
538struct svc_procedure nlmsvc_procedures[] = {
539 PROC(null, void, void, void, void, 1),
540 PROC(test, testargs, testres, args, res, Ck+St+2+No+Rg),
541 PROC(lock, lockargs, res, args, res, Ck+St),
542 PROC(cancel, cancargs, res, args, res, Ck+St),
543 PROC(unlock, unlockargs, res, args, res, Ck+St),
544 PROC(granted, testargs, res, args, res, Ck+St),
545 PROC(test_msg, testargs, norep, args, void, 1),
546 PROC(lock_msg, lockargs, norep, args, void, 1),
547 PROC(cancel_msg, cancargs, norep, args, void, 1),
548 PROC(unlock_msg, unlockargs, norep, args, void, 1),
549 PROC(granted_msg, testargs, norep, args, void, 1),
550 PROC(test_res, testres, norep, res, void, 1),
551 PROC(lock_res, lockres, norep, res, void, 1),
552 PROC(cancel_res, cancelres, norep, res, void, 1),
553 PROC(unlock_res, unlockres, norep, res, void, 1),
554 PROC(granted_res, res, norep, res, void, 1),
555 /* statd callback */
556 PROC(sm_notify, reboot, void, reboot, void, 1),
557 PROC(none, void, void, void, void, 1),
558 PROC(none, void, void, void, void, 1),
559 PROC(none, void, void, void, void, 1),
560 PROC(share, shareargs, shareres, args, res, Ck+St+1),
561 PROC(unshare, shareargs, shareres, args, res, Ck+St+1),
562 PROC(nm_lock, lockargs, res, args, res, Ck+St),
563 PROC(free_all, notify, void, args, void, 0),
564
565};