blob: d27aab11f32414ae165cec40083ef20f08de0466 [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>
Linus Torvalds1da177e2005-04-16 15:20:36 -070012#include <linux/lockd/lockd.h>
13#include <linux/lockd/share.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070014
15#define NLMDBG_FACILITY NLMDBG_CLIENT
16
Linus Torvalds1da177e2005-04-16 15:20:36 -070017#ifdef CONFIG_LOCKD_V4
Al Viro52921e02006-10-19 23:28:46 -070018static __be32
19cast_to_nlm(__be32 status, u32 vers)
Linus Torvalds1da177e2005-04-16 15:20:36 -070020{
21 /* Note: status is assumed to be in network byte order !!! */
22 if (vers != 4){
23 switch (status) {
24 case nlm_granted:
25 case nlm_lck_denied:
26 case nlm_lck_denied_nolocks:
27 case nlm_lck_blocked:
28 case nlm_lck_denied_grace_period:
Marc Eshel5ea0d752006-11-28 16:27:06 -050029 case nlm_drop_reply:
Linus Torvalds1da177e2005-04-16 15:20:36 -070030 break;
31 case nlm4_deadlock:
32 status = nlm_lck_denied;
33 break;
34 default:
35 status = nlm_lck_denied_nolocks;
36 }
37 }
38
39 return (status);
40}
41#define cast_status(status) (cast_to_nlm(status, rqstp->rq_vers))
42#else
43#define cast_status(status) (status)
44#endif
45
46/*
47 * Obtain client and file from arguments
48 */
Al Viro52921e02006-10-19 23:28:46 -070049static __be32
Linus Torvalds1da177e2005-04-16 15:20:36 -070050nlmsvc_retrieve_args(struct svc_rqst *rqstp, struct nlm_args *argp,
51 struct nlm_host **hostp, struct nlm_file **filp)
52{
53 struct nlm_host *host = NULL;
54 struct nlm_file *file = NULL;
55 struct nlm_lock *lock = &argp->lock;
Al Viro52921e02006-10-19 23:28:46 -070056 __be32 error = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -070057
58 /* nfsd callbacks must have been installed for this procedure */
59 if (!nlmsvc_ops)
60 return nlm_lck_denied_nolocks;
61
62 /* Obtain host handle */
Olaf Kirchdb4e4c92006-10-04 02:15:52 -070063 if (!(host = nlmsvc_lookup_host(rqstp, lock->caller, lock->len))
Olaf Kirch977faf32006-10-04 02:15:51 -070064 || (argp->monitor && nsm_monitor(host) < 0))
Linus Torvalds1da177e2005-04-16 15:20:36 -070065 goto no_locks;
66 *hostp = host;
67
68 /* Obtain file pointer. Not used by FREE_ALL call. */
69 if (filp != NULL) {
70 if ((error = nlm_lookup_file(rqstp, &file, &lock->fh)) != 0)
71 goto no_locks;
72 *filp = file;
73
74 /* Set up the missing parts of the file_lock structure */
75 lock->fl.fl_file = file->f_file;
76 lock->fl.fl_owner = (fl_owner_t) host;
77 lock->fl.fl_lmops = &nlmsvc_lock_operations;
78 }
79
80 return 0;
81
82no_locks:
Chuck Lever67216b92010-12-14 15:06:12 +000083 nlmsvc_release_host(host);
NeilBrownd343fce2006-10-17 00:10:18 -070084 if (error)
85 return error;
Linus Torvalds1da177e2005-04-16 15:20:36 -070086 return nlm_lck_denied_nolocks;
87}
88
89/*
90 * NULL: Test for presence of service
91 */
Al Viro7111c662006-10-19 23:28:45 -070092static __be32
Linus Torvalds1da177e2005-04-16 15:20:36 -070093nlmsvc_proc_null(struct svc_rqst *rqstp, void *argp, void *resp)
94{
95 dprintk("lockd: NULL called\n");
96 return rpc_success;
97}
98
99/*
100 * TEST: Check for conflicting lock
101 */
Al Viro7111c662006-10-19 23:28:45 -0700102static __be32
Linus Torvalds1da177e2005-04-16 15:20:36 -0700103nlmsvc_proc_test(struct svc_rqst *rqstp, struct nlm_args *argp,
104 struct nlm_res *resp)
105{
106 struct nlm_host *host;
107 struct nlm_file *file;
Harvey Harrison317602f2008-07-20 23:41:24 -0700108 __be32 rc = rpc_success;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700109
110 dprintk("lockd: TEST called\n");
111 resp->cookie = argp->cookie;
112
Linus Torvalds1da177e2005-04-16 15:20:36 -0700113 /* Obtain client and file */
114 if ((resp->status = nlmsvc_retrieve_args(rqstp, argp, &host, &file)))
NeilBrownd343fce2006-10-17 00:10:18 -0700115 return resp->status == nlm_drop_reply ? rpc_drop_reply :rpc_success;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700116
117 /* Now check for conflicting locks */
Jeff Layton8f920d52008-07-15 14:06:48 -0400118 resp->status = cast_status(nlmsvc_testlock(rqstp, file, host, &argp->lock, &resp->lock, &resp->cookie));
Marc Eshel5ea0d752006-11-28 16:27:06 -0500119 if (resp->status == nlm_drop_reply)
Oleg Drokinb7e6b862007-11-26 13:35:11 -0500120 rc = rpc_drop_reply;
121 else
122 dprintk("lockd: TEST status %d vers %d\n",
123 ntohl(resp->status), rqstp->rq_vers);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700124
Chuck Lever67216b92010-12-14 15:06:12 +0000125 nlmsvc_release_host(host);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700126 nlm_release_file(file);
Oleg Drokinb7e6b862007-11-26 13:35:11 -0500127 return rc;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700128}
129
Al Viro7111c662006-10-19 23:28:45 -0700130static __be32
Linus Torvalds1da177e2005-04-16 15:20:36 -0700131nlmsvc_proc_lock(struct svc_rqst *rqstp, struct nlm_args *argp,
132 struct nlm_res *resp)
133{
134 struct nlm_host *host;
135 struct nlm_file *file;
Harvey Harrison317602f2008-07-20 23:41:24 -0700136 __be32 rc = rpc_success;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700137
138 dprintk("lockd: LOCK called\n");
139
140 resp->cookie = argp->cookie;
141
Linus Torvalds1da177e2005-04-16 15:20:36 -0700142 /* Obtain client and file */
143 if ((resp->status = nlmsvc_retrieve_args(rqstp, argp, &host, &file)))
NeilBrownd343fce2006-10-17 00:10:18 -0700144 return resp->status == nlm_drop_reply ? rpc_drop_reply :rpc_success;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700145
146#if 0
147 /* If supplied state doesn't match current state, we assume it's
148 * an old request that time-warped somehow. Any error return would
149 * do in this case because it's irrelevant anyway.
150 *
151 * NB: We don't retrieve the remote host's state yet.
152 */
153 if (host->h_nsmstate && host->h_nsmstate != argp->state) {
154 resp->status = nlm_lck_denied_nolocks;
155 } else
156#endif
157
158 /* Now try to lock the file */
Jeff Layton6cde4de2008-07-15 14:26:17 -0400159 resp->status = cast_status(nlmsvc_lock(rqstp, file, host, &argp->lock,
J. Bruce Fieldsb2b50282008-02-06 13:59:23 -0500160 argp->block, &argp->cookie,
161 argp->reclaim));
Marc Eshel1a8322b2006-11-28 16:27:06 -0500162 if (resp->status == nlm_drop_reply)
Oleg Drokinb7e6b862007-11-26 13:35:11 -0500163 rc = rpc_drop_reply;
164 else
165 dprintk("lockd: LOCK status %d\n", ntohl(resp->status));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700166
Chuck Lever67216b92010-12-14 15:06:12 +0000167 nlmsvc_release_host(host);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700168 nlm_release_file(file);
Oleg Drokinb7e6b862007-11-26 13:35:11 -0500169 return rc;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700170}
171
Al Viro7111c662006-10-19 23:28:45 -0700172static __be32
Linus Torvalds1da177e2005-04-16 15:20:36 -0700173nlmsvc_proc_cancel(struct svc_rqst *rqstp, struct nlm_args *argp,
174 struct nlm_res *resp)
175{
176 struct nlm_host *host;
177 struct nlm_file *file;
178
179 dprintk("lockd: CANCEL called\n");
180
181 resp->cookie = argp->cookie;
182
183 /* Don't accept requests during grace period */
J. Bruce Fieldsaf558e32007-09-06 12:34:25 -0400184 if (locks_in_grace()) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700185 resp->status = nlm_lck_denied_grace_period;
186 return rpc_success;
187 }
188
189 /* Obtain client and file */
190 if ((resp->status = nlmsvc_retrieve_args(rqstp, argp, &host, &file)))
NeilBrownd343fce2006-10-17 00:10:18 -0700191 return resp->status == nlm_drop_reply ? rpc_drop_reply :rpc_success;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700192
193 /* Try to cancel request. */
194 resp->status = cast_status(nlmsvc_cancel_blocked(file, &argp->lock));
195
196 dprintk("lockd: CANCEL status %d\n", ntohl(resp->status));
Chuck Lever67216b92010-12-14 15:06:12 +0000197 nlmsvc_release_host(host);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700198 nlm_release_file(file);
199 return rpc_success;
200}
201
202/*
203 * UNLOCK: release a lock
204 */
Al Viro7111c662006-10-19 23:28:45 -0700205static __be32
Linus Torvalds1da177e2005-04-16 15:20:36 -0700206nlmsvc_proc_unlock(struct svc_rqst *rqstp, struct nlm_args *argp,
207 struct nlm_res *resp)
208{
209 struct nlm_host *host;
210 struct nlm_file *file;
211
212 dprintk("lockd: UNLOCK called\n");
213
214 resp->cookie = argp->cookie;
215
216 /* Don't accept new lock requests during grace period */
J. Bruce Fieldsaf558e32007-09-06 12:34:25 -0400217 if (locks_in_grace()) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700218 resp->status = nlm_lck_denied_grace_period;
219 return rpc_success;
220 }
221
222 /* Obtain client and file */
223 if ((resp->status = nlmsvc_retrieve_args(rqstp, argp, &host, &file)))
NeilBrownd343fce2006-10-17 00:10:18 -0700224 return resp->status == nlm_drop_reply ? rpc_drop_reply :rpc_success;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700225
226 /* Now try to remove the lock */
227 resp->status = cast_status(nlmsvc_unlock(file, &argp->lock));
228
229 dprintk("lockd: UNLOCK status %d\n", ntohl(resp->status));
Chuck Lever67216b92010-12-14 15:06:12 +0000230 nlmsvc_release_host(host);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700231 nlm_release_file(file);
232 return rpc_success;
233}
234
235/*
236 * GRANTED: A server calls us to tell that a process' lock request
237 * was granted
238 */
Al Viro7111c662006-10-19 23:28:45 -0700239static __be32
Linus Torvalds1da177e2005-04-16 15:20:36 -0700240nlmsvc_proc_granted(struct svc_rqst *rqstp, struct nlm_args *argp,
241 struct nlm_res *resp)
242{
243 resp->cookie = argp->cookie;
244
245 dprintk("lockd: GRANTED called\n");
Chuck Leverdcff09f2008-10-03 12:50:36 -0400246 resp->status = nlmclnt_grant(svc_addr(rqstp), &argp->lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700247 dprintk("lockd: GRANTED status %d\n", ntohl(resp->status));
248 return rpc_success;
249}
250
251/*
Trond Myklebustd4716622006-03-20 13:44:45 -0500252 * This is the generic lockd callback for async RPC calls
253 */
254static void nlmsvc_callback_exit(struct rpc_task *task, void *data)
255{
Chuck Leverc041b5f2006-12-05 16:36:03 -0500256 dprintk("lockd: %5u callback returned %d\n", task->tk_pid,
Trond Myklebustd4716622006-03-20 13:44:45 -0500257 -task->tk_status);
258}
259
Chuck Lever7db836d2010-12-14 15:05:42 +0000260void nlmsvc_release_call(struct nlm_rqst *call)
261{
262 if (!atomic_dec_and_test(&call->a_count))
263 return;
Chuck Lever67216b92010-12-14 15:06:12 +0000264 nlmsvc_release_host(call->a_host);
Chuck Lever7db836d2010-12-14 15:05:42 +0000265 kfree(call);
266}
267
Trond Myklebustd4716622006-03-20 13:44:45 -0500268static void nlmsvc_callback_release(void *data)
269{
Chuck Lever7db836d2010-12-14 15:05:42 +0000270 nlmsvc_release_call(data);
Trond Myklebustd4716622006-03-20 13:44:45 -0500271}
272
273static const struct rpc_call_ops nlmsvc_callback_ops = {
274 .rpc_call_done = nlmsvc_callback_exit,
275 .rpc_release = nlmsvc_callback_release,
276};
277
278/*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700279 * `Async' versions of the above service routines. They aren't really,
280 * because we send the callback before the reply proper. I hope this
281 * doesn't break any clients.
282 */
Al Viro7111c662006-10-19 23:28:45 -0700283static __be32 nlmsvc_callback(struct svc_rqst *rqstp, u32 proc, struct nlm_args *argp,
284 __be32 (*func)(struct svc_rqst *, struct nlm_args *, struct nlm_res *))
Trond Myklebustd4716622006-03-20 13:44:45 -0500285{
286 struct nlm_host *host;
287 struct nlm_rqst *call;
Al Viro7111c662006-10-19 23:28:45 -0700288 __be32 stat;
Trond Myklebustd4716622006-03-20 13:44:45 -0500289
Olaf Kirchdb4e4c92006-10-04 02:15:52 -0700290 host = nlmsvc_lookup_host(rqstp,
291 argp->lock.caller,
292 argp->lock.len);
Trond Myklebustd4716622006-03-20 13:44:45 -0500293 if (host == NULL)
294 return rpc_system_err;
295
296 call = nlm_alloc_call(host);
297 if (call == NULL)
298 return rpc_system_err;
299
300 stat = func(rqstp, argp, &call->a_res);
301 if (stat != 0) {
Chuck Lever7db836d2010-12-14 15:05:42 +0000302 nlmsvc_release_call(call);
Trond Myklebustd4716622006-03-20 13:44:45 -0500303 return stat;
304 }
305
306 call->a_flags = RPC_TASK_ASYNC;
307 if (nlm_async_reply(call, proc, &nlmsvc_callback_ops) < 0)
308 return rpc_system_err;
309 return rpc_success;
310}
311
Al Viro7111c662006-10-19 23:28:45 -0700312static __be32 nlmsvc_proc_test_msg(struct svc_rqst *rqstp, struct nlm_args *argp,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700313 void *resp)
314{
Linus Torvalds1da177e2005-04-16 15:20:36 -0700315 dprintk("lockd: TEST_MSG called\n");
Trond Myklebustd4716622006-03-20 13:44:45 -0500316 return nlmsvc_callback(rqstp, NLMPROC_TEST_RES, argp, nlmsvc_proc_test);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700317}
318
Al Viro7111c662006-10-19 23:28:45 -0700319static __be32 nlmsvc_proc_lock_msg(struct svc_rqst *rqstp, struct nlm_args *argp,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700320 void *resp)
321{
Linus Torvalds1da177e2005-04-16 15:20:36 -0700322 dprintk("lockd: LOCK_MSG called\n");
Trond Myklebustd4716622006-03-20 13:44:45 -0500323 return nlmsvc_callback(rqstp, NLMPROC_LOCK_RES, argp, nlmsvc_proc_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700324}
325
Al Viro7111c662006-10-19 23:28:45 -0700326static __be32 nlmsvc_proc_cancel_msg(struct svc_rqst *rqstp, struct nlm_args *argp,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700327 void *resp)
328{
Linus Torvalds1da177e2005-04-16 15:20:36 -0700329 dprintk("lockd: CANCEL_MSG called\n");
Trond Myklebustd4716622006-03-20 13:44:45 -0500330 return nlmsvc_callback(rqstp, NLMPROC_CANCEL_RES, argp, nlmsvc_proc_cancel);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700331}
332
Al Viro7111c662006-10-19 23:28:45 -0700333static __be32
Linus Torvalds1da177e2005-04-16 15:20:36 -0700334nlmsvc_proc_unlock_msg(struct svc_rqst *rqstp, struct nlm_args *argp,
335 void *resp)
336{
Linus Torvalds1da177e2005-04-16 15:20:36 -0700337 dprintk("lockd: UNLOCK_MSG called\n");
Trond Myklebustd4716622006-03-20 13:44:45 -0500338 return nlmsvc_callback(rqstp, NLMPROC_UNLOCK_RES, argp, nlmsvc_proc_unlock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700339}
340
Al Viro7111c662006-10-19 23:28:45 -0700341static __be32
Linus Torvalds1da177e2005-04-16 15:20:36 -0700342nlmsvc_proc_granted_msg(struct svc_rqst *rqstp, struct nlm_args *argp,
343 void *resp)
344{
Linus Torvalds1da177e2005-04-16 15:20:36 -0700345 dprintk("lockd: GRANTED_MSG called\n");
Trond Myklebustd4716622006-03-20 13:44:45 -0500346 return nlmsvc_callback(rqstp, NLMPROC_GRANTED_RES, argp, nlmsvc_proc_granted);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700347}
348
349/*
350 * SHARE: create a DOS share or alter existing share.
351 */
Al Viro7111c662006-10-19 23:28:45 -0700352static __be32
Linus Torvalds1da177e2005-04-16 15:20:36 -0700353nlmsvc_proc_share(struct svc_rqst *rqstp, struct nlm_args *argp,
354 struct nlm_res *resp)
355{
356 struct nlm_host *host;
357 struct nlm_file *file;
358
359 dprintk("lockd: SHARE called\n");
360
361 resp->cookie = argp->cookie;
362
363 /* Don't accept new lock requests during grace period */
J. Bruce Fieldsaf558e32007-09-06 12:34:25 -0400364 if (locks_in_grace() && !argp->reclaim) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700365 resp->status = nlm_lck_denied_grace_period;
366 return rpc_success;
367 }
368
369 /* Obtain client and file */
370 if ((resp->status = nlmsvc_retrieve_args(rqstp, argp, &host, &file)))
NeilBrownd343fce2006-10-17 00:10:18 -0700371 return resp->status == nlm_drop_reply ? rpc_drop_reply :rpc_success;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700372
373 /* Now try to create the share */
374 resp->status = cast_status(nlmsvc_share_file(host, file, argp));
375
376 dprintk("lockd: SHARE status %d\n", ntohl(resp->status));
Chuck Lever67216b92010-12-14 15:06:12 +0000377 nlmsvc_release_host(host);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700378 nlm_release_file(file);
379 return rpc_success;
380}
381
382/*
383 * UNSHARE: Release a DOS share.
384 */
Al Viro7111c662006-10-19 23:28:45 -0700385static __be32
Linus Torvalds1da177e2005-04-16 15:20:36 -0700386nlmsvc_proc_unshare(struct svc_rqst *rqstp, struct nlm_args *argp,
387 struct nlm_res *resp)
388{
389 struct nlm_host *host;
390 struct nlm_file *file;
391
392 dprintk("lockd: UNSHARE called\n");
393
394 resp->cookie = argp->cookie;
395
396 /* Don't accept requests during grace period */
J. Bruce Fieldsaf558e32007-09-06 12:34:25 -0400397 if (locks_in_grace()) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700398 resp->status = nlm_lck_denied_grace_period;
399 return rpc_success;
400 }
401
402 /* Obtain client and file */
403 if ((resp->status = nlmsvc_retrieve_args(rqstp, argp, &host, &file)))
NeilBrownd343fce2006-10-17 00:10:18 -0700404 return resp->status == nlm_drop_reply ? rpc_drop_reply :rpc_success;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700405
406 /* Now try to unshare the file */
407 resp->status = cast_status(nlmsvc_unshare_file(host, file, argp));
408
409 dprintk("lockd: UNSHARE status %d\n", ntohl(resp->status));
Chuck Lever67216b92010-12-14 15:06:12 +0000410 nlmsvc_release_host(host);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700411 nlm_release_file(file);
412 return rpc_success;
413}
414
415/*
416 * NM_LOCK: Create an unmonitored lock
417 */
Al Viro7111c662006-10-19 23:28:45 -0700418static __be32
Linus Torvalds1da177e2005-04-16 15:20:36 -0700419nlmsvc_proc_nm_lock(struct svc_rqst *rqstp, struct nlm_args *argp,
420 struct nlm_res *resp)
421{
422 dprintk("lockd: NM_LOCK called\n");
423
424 argp->monitor = 0; /* just clean the monitor flag */
425 return nlmsvc_proc_lock(rqstp, argp, resp);
426}
427
428/*
429 * FREE_ALL: Release all locks and shares held by client
430 */
Al Viro7111c662006-10-19 23:28:45 -0700431static __be32
Linus Torvalds1da177e2005-04-16 15:20:36 -0700432nlmsvc_proc_free_all(struct svc_rqst *rqstp, struct nlm_args *argp,
433 void *resp)
434{
435 struct nlm_host *host;
436
437 /* Obtain client */
438 if (nlmsvc_retrieve_args(rqstp, argp, &host, NULL))
439 return rpc_success;
440
441 nlmsvc_free_host_resources(host);
Chuck Lever67216b92010-12-14 15:06:12 +0000442 nlmsvc_release_host(host);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700443 return rpc_success;
444}
445
446/*
447 * SM_NOTIFY: private callback from statd (not part of official NLM proto)
448 */
Al Viro7111c662006-10-19 23:28:45 -0700449static __be32
Linus Torvalds1da177e2005-04-16 15:20:36 -0700450nlmsvc_proc_sm_notify(struct svc_rqst *rqstp, struct nlm_reboot *argp,
451 void *resp)
452{
Linus Torvalds1da177e2005-04-16 15:20:36 -0700453 dprintk("lockd: SM_NOTIFY called\n");
Chuck Leverb85e4672008-10-03 12:50:44 -0400454
455 if (!nlm_privileged_requester(rqstp)) {
Chuck Leverad06e4b2007-02-12 00:53:32 -0800456 char buf[RPC_MAX_ADDRBUFLEN];
457 printk(KERN_WARNING "lockd: rejected NSM callback from %s\n",
458 svc_print_addr(rqstp, buf, sizeof(buf)));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700459 return rpc_system_err;
460 }
461
Chuck Lever7fefc9c2008-12-05 19:03:31 -0500462 nlm_host_rebooted(argp);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700463 return rpc_success;
464}
465
466/*
467 * client sent a GRANTED_RES, let's remove the associated block
468 */
Al Viro7111c662006-10-19 23:28:45 -0700469static __be32
Linus Torvalds1da177e2005-04-16 15:20:36 -0700470nlmsvc_proc_granted_res(struct svc_rqst *rqstp, struct nlm_res *argp,
471 void *resp)
472{
473 if (!nlmsvc_ops)
474 return rpc_success;
475
476 dprintk("lockd: GRANTED_RES called\n");
477
Olaf Kirch39be4502006-10-04 02:16:03 -0700478 nlmsvc_grant_reply(&argp->cookie, argp->status);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700479 return rpc_success;
480}
481
482/*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700483 * NLM Server procedures.
484 */
485
486#define nlmsvc_encode_norep nlmsvc_encode_void
487#define nlmsvc_decode_norep nlmsvc_decode_void
488#define nlmsvc_decode_testres nlmsvc_decode_void
489#define nlmsvc_decode_lockres nlmsvc_decode_void
490#define nlmsvc_decode_unlockres nlmsvc_decode_void
491#define nlmsvc_decode_cancelres nlmsvc_decode_void
492#define nlmsvc_decode_grantedres nlmsvc_decode_void
493
494#define nlmsvc_proc_none nlmsvc_proc_null
495#define nlmsvc_proc_test_res nlmsvc_proc_null
496#define nlmsvc_proc_lock_res nlmsvc_proc_null
497#define nlmsvc_proc_cancel_res nlmsvc_proc_null
498#define nlmsvc_proc_unlock_res nlmsvc_proc_null
499
500struct nlm_void { int dummy; };
501
502#define PROC(name, xargt, xrest, argt, rest, respsize) \
503 { .pc_func = (svc_procfunc) nlmsvc_proc_##name, \
504 .pc_decode = (kxdrproc_t) nlmsvc_decode_##xargt, \
505 .pc_encode = (kxdrproc_t) nlmsvc_encode_##xrest, \
506 .pc_release = NULL, \
507 .pc_argsize = sizeof(struct nlm_##argt), \
508 .pc_ressize = sizeof(struct nlm_##rest), \
509 .pc_xdrressize = respsize, \
510 }
511
512#define Ck (1+XDR_QUADLEN(NLM_MAXCOOKIELEN)) /* cookie */
513#define St 1 /* status */
514#define No (1+1024/4) /* Net Obj */
515#define Rg 2 /* range - offset + size */
516
517struct svc_procedure nlmsvc_procedures[] = {
518 PROC(null, void, void, void, void, 1),
519 PROC(test, testargs, testres, args, res, Ck+St+2+No+Rg),
520 PROC(lock, lockargs, res, args, res, Ck+St),
521 PROC(cancel, cancargs, res, args, res, Ck+St),
522 PROC(unlock, unlockargs, res, args, res, Ck+St),
523 PROC(granted, testargs, res, args, res, Ck+St),
524 PROC(test_msg, testargs, norep, args, void, 1),
525 PROC(lock_msg, lockargs, norep, args, void, 1),
526 PROC(cancel_msg, cancargs, norep, args, void, 1),
527 PROC(unlock_msg, unlockargs, norep, args, void, 1),
528 PROC(granted_msg, testargs, norep, args, void, 1),
529 PROC(test_res, testres, norep, res, void, 1),
530 PROC(lock_res, lockres, norep, res, void, 1),
531 PROC(cancel_res, cancelres, norep, res, void, 1),
532 PROC(unlock_res, unlockres, norep, res, void, 1),
533 PROC(granted_res, res, norep, res, void, 1),
534 /* statd callback */
535 PROC(sm_notify, reboot, void, reboot, void, 1),
536 PROC(none, void, void, void, void, 1),
537 PROC(none, void, void, void, void, 1),
538 PROC(none, void, void, void, void, 1),
539 PROC(share, shareargs, shareres, args, res, Ck+St+1),
540 PROC(unshare, shareargs, shareres, args, res, Ck+St+1),
541 PROC(nm_lock, lockargs, res, args, res, Ck+St),
542 PROC(free_all, notify, void, args, void, 0),
543
544};