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1/*
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
10#include <linux/types.h>
11#include <linux/time.h>
12#include <linux/lockd/lockd.h>
13#include <linux/lockd/share.h>
14
15#define NLMDBG_FACILITY NLMDBG_CLIENT
16
17#ifdef CONFIG_LOCKD_V4
18static __be32
19cast_to_nlm(__be32 status, u32 vers)
20{
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:
29 case nlm_drop_reply:
30 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 */
49static __be32
50nlmsvc_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;
56 __be32 error = 0;
57
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 */
63 if (!(host = nlmsvc_lookup_host(rqstp, lock->caller, lock->len))
64 || (argp->monitor && nsm_monitor(host) < 0))
65 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:
83 nlmsvc_release_host(host);
84 if (error)
85 return error;
86 return nlm_lck_denied_nolocks;
87}
88
89/*
90 * NULL: Test for presence of service
91 */
92static __be32
93nlmsvc_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 */
102static __be32
103nlmsvc_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;
108 __be32 rc = rpc_success;
109
110 dprintk("lockd: TEST called\n");
111 resp->cookie = argp->cookie;
112
113 /* Obtain client and file */
114 if ((resp->status = nlmsvc_retrieve_args(rqstp, argp, &host, &file)))
115 return resp->status == nlm_drop_reply ? rpc_drop_reply :rpc_success;
116
117 /* Now check for conflicting locks */
118 resp->status = cast_status(nlmsvc_testlock(rqstp, file, host, &argp->lock, &resp->lock, &resp->cookie));
119 if (resp->status == nlm_drop_reply)
120 rc = rpc_drop_reply;
121 else
122 dprintk("lockd: TEST status %d vers %d\n",
123 ntohl(resp->status), rqstp->rq_vers);
124
125 nlmsvc_release_host(host);
126 nlm_release_file(file);
127 return rc;
128}
129
130static __be32
131nlmsvc_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;
136 __be32 rc = rpc_success;
137
138 dprintk("lockd: LOCK called\n");
139
140 resp->cookie = argp->cookie;
141
142 /* Obtain client and file */
143 if ((resp->status = nlmsvc_retrieve_args(rqstp, argp, &host, &file)))
144 return resp->status == nlm_drop_reply ? rpc_drop_reply :rpc_success;
145
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 */
159 resp->status = cast_status(nlmsvc_lock(rqstp, file, host, &argp->lock,
160 argp->block, &argp->cookie,
161 argp->reclaim));
162 if (resp->status == nlm_drop_reply)
163 rc = rpc_drop_reply;
164 else
165 dprintk("lockd: LOCK status %d\n", ntohl(resp->status));
166
167 nlmsvc_release_host(host);
168 nlm_release_file(file);
169 return rc;
170}
171
172static __be32
173nlmsvc_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 */
184 if (locks_in_grace()) {
185 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)))
191 return resp->status == nlm_drop_reply ? rpc_drop_reply :rpc_success;
192
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));
197 nlmsvc_release_host(host);
198 nlm_release_file(file);
199 return rpc_success;
200}
201
202/*
203 * UNLOCK: release a lock
204 */
205static __be32
206nlmsvc_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 */
217 if (locks_in_grace()) {
218 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)))
224 return resp->status == nlm_drop_reply ? rpc_drop_reply :rpc_success;
225
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));
230 nlmsvc_release_host(host);
231 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 */
239static __be32
240nlmsvc_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");
246 resp->status = nlmclnt_grant(svc_addr(rqstp), &argp->lock);
247 dprintk("lockd: GRANTED status %d\n", ntohl(resp->status));
248 return rpc_success;
249}
250
251/*
252 * This is the generic lockd callback for async RPC calls
253 */
254static void nlmsvc_callback_exit(struct rpc_task *task, void *data)
255{
256 dprintk("lockd: %5u callback returned %d\n", task->tk_pid,
257 -task->tk_status);
258}
259
260void nlmsvc_release_call(struct nlm_rqst *call)
261{
262 if (!atomic_dec_and_test(&call->a_count))
263 return;
264 nlmsvc_release_host(call->a_host);
265 kfree(call);
266}
267
268static void nlmsvc_callback_release(void *data)
269{
270 nlmsvc_release_call(data);
271}
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/*
279 * `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 */
283static __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 *))
285{
286 struct nlm_host *host;
287 struct nlm_rqst *call;
288 __be32 stat;
289
290 host = nlmsvc_lookup_host(rqstp,
291 argp->lock.caller,
292 argp->lock.len);
293 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) {
302 nlmsvc_release_call(call);
303 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
312static __be32 nlmsvc_proc_test_msg(struct svc_rqst *rqstp, struct nlm_args *argp,
313 void *resp)
314{
315 dprintk("lockd: TEST_MSG called\n");
316 return nlmsvc_callback(rqstp, NLMPROC_TEST_RES, argp, nlmsvc_proc_test);
317}
318
319static __be32 nlmsvc_proc_lock_msg(struct svc_rqst *rqstp, struct nlm_args *argp,
320 void *resp)
321{
322 dprintk("lockd: LOCK_MSG called\n");
323 return nlmsvc_callback(rqstp, NLMPROC_LOCK_RES, argp, nlmsvc_proc_lock);
324}
325
326static __be32 nlmsvc_proc_cancel_msg(struct svc_rqst *rqstp, struct nlm_args *argp,
327 void *resp)
328{
329 dprintk("lockd: CANCEL_MSG called\n");
330 return nlmsvc_callback(rqstp, NLMPROC_CANCEL_RES, argp, nlmsvc_proc_cancel);
331}
332
333static __be32
334nlmsvc_proc_unlock_msg(struct svc_rqst *rqstp, struct nlm_args *argp,
335 void *resp)
336{
337 dprintk("lockd: UNLOCK_MSG called\n");
338 return nlmsvc_callback(rqstp, NLMPROC_UNLOCK_RES, argp, nlmsvc_proc_unlock);
339}
340
341static __be32
342nlmsvc_proc_granted_msg(struct svc_rqst *rqstp, struct nlm_args *argp,
343 void *resp)
344{
345 dprintk("lockd: GRANTED_MSG called\n");
346 return nlmsvc_callback(rqstp, NLMPROC_GRANTED_RES, argp, nlmsvc_proc_granted);
347}
348
349/*
350 * SHARE: create a DOS share or alter existing share.
351 */
352static __be32
353nlmsvc_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 */
364 if (locks_in_grace() && !argp->reclaim) {
365 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)))
371 return resp->status == nlm_drop_reply ? rpc_drop_reply :rpc_success;
372
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));
377 nlmsvc_release_host(host);
378 nlm_release_file(file);
379 return rpc_success;
380}
381
382/*
383 * UNSHARE: Release a DOS share.
384 */
385static __be32
386nlmsvc_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 */
397 if (locks_in_grace()) {
398 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)))
404 return resp->status == nlm_drop_reply ? rpc_drop_reply :rpc_success;
405
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));
410 nlmsvc_release_host(host);
411 nlm_release_file(file);
412 return rpc_success;
413}
414
415/*
416 * NM_LOCK: Create an unmonitored lock
417 */
418static __be32
419nlmsvc_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 */
431static __be32
432nlmsvc_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);
442 nlmsvc_release_host(host);
443 return rpc_success;
444}
445
446/*
447 * SM_NOTIFY: private callback from statd (not part of official NLM proto)
448 */
449static __be32
450nlmsvc_proc_sm_notify(struct svc_rqst *rqstp, struct nlm_reboot *argp,
451 void *resp)
452{
453 dprintk("lockd: SM_NOTIFY called\n");
454
455 if (!nlm_privileged_requester(rqstp)) {
456 char buf[RPC_MAX_ADDRBUFLEN];
457 printk(KERN_WARNING "lockd: rejected NSM callback from %s\n",
458 svc_print_addr(rqstp, buf, sizeof(buf)));
459 return rpc_system_err;
460 }
461
462 nlm_host_rebooted(argp);
463 return rpc_success;
464}
465
466/*
467 * client sent a GRANTED_RES, let's remove the associated block
468 */
469static __be32
470nlmsvc_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
478 nlmsvc_grant_reply(&argp->cookie, argp->status);
479 return rpc_success;
480}
481
482/*
483 * 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};
1// SPDX-License-Identifier: GPL-2.0
2/*
3 * linux/fs/lockd/svcproc.c
4 *
5 * Lockd server procedures. We don't implement the NLM_*_RES
6 * procedures because we don't use the async procedures.
7 *
8 * Copyright (C) 1996, Olaf Kirch <okir@monad.swb.de>
9 */
10
11#include <linux/types.h>
12#include <linux/time.h>
13#include <linux/lockd/lockd.h>
14#include <linux/lockd/share.h>
15#include <linux/sunrpc/svc_xprt.h>
16
17#define NLMDBG_FACILITY NLMDBG_CLIENT
18
19#ifdef CONFIG_LOCKD_V4
20static __be32
21cast_to_nlm(__be32 status, u32 vers)
22{
23 /* Note: status is assumed to be in network byte order !!! */
24 if (vers != 4){
25 switch (status) {
26 case nlm_granted:
27 case nlm_lck_denied:
28 case nlm_lck_denied_nolocks:
29 case nlm_lck_blocked:
30 case nlm_lck_denied_grace_period:
31 case nlm_drop_reply:
32 break;
33 case nlm4_deadlock:
34 status = nlm_lck_denied;
35 break;
36 default:
37 status = nlm_lck_denied_nolocks;
38 }
39 }
40
41 return (status);
42}
43#define cast_status(status) (cast_to_nlm(status, rqstp->rq_vers))
44#else
45#define cast_status(status) (status)
46#endif
47
48/*
49 * Obtain client and file from arguments
50 */
51static __be32
52nlmsvc_retrieve_args(struct svc_rqst *rqstp, struct nlm_args *argp,
53 struct nlm_host **hostp, struct nlm_file **filp)
54{
55 struct nlm_host *host = NULL;
56 struct nlm_file *file = NULL;
57 struct nlm_lock *lock = &argp->lock;
58 int mode;
59 __be32 error = 0;
60
61 /* nfsd callbacks must have been installed for this procedure */
62 if (!nlmsvc_ops)
63 return nlm_lck_denied_nolocks;
64
65 /* Obtain host handle */
66 if (!(host = nlmsvc_lookup_host(rqstp, lock->caller, lock->len))
67 || (argp->monitor && nsm_monitor(host) < 0))
68 goto no_locks;
69 *hostp = host;
70
71 /* Obtain file pointer. Not used by FREE_ALL call. */
72 if (filp != NULL) {
73 error = cast_status(nlm_lookup_file(rqstp, &file, lock));
74 if (error != 0)
75 goto no_locks;
76 *filp = file;
77
78 /* Set up the missing parts of the file_lock structure */
79 mode = lock_to_openmode(&lock->fl);
80 lock->fl.fl_flags = FL_POSIX;
81 lock->fl.fl_file = file->f_file[mode];
82 lock->fl.fl_pid = current->tgid;
83 lock->fl.fl_lmops = &nlmsvc_lock_operations;
84 nlmsvc_locks_init_private(&lock->fl, host, (pid_t)lock->svid);
85 if (!lock->fl.fl_owner) {
86 /* lockowner allocation has failed */
87 nlmsvc_release_host(host);
88 return nlm_lck_denied_nolocks;
89 }
90 }
91
92 return 0;
93
94no_locks:
95 nlmsvc_release_host(host);
96 if (error)
97 return error;
98 return nlm_lck_denied_nolocks;
99}
100
101/*
102 * NULL: Test for presence of service
103 */
104static __be32
105nlmsvc_proc_null(struct svc_rqst *rqstp)
106{
107 dprintk("lockd: NULL called\n");
108 return rpc_success;
109}
110
111/*
112 * TEST: Check for conflicting lock
113 */
114static __be32
115__nlmsvc_proc_test(struct svc_rqst *rqstp, struct nlm_res *resp)
116{
117 struct nlm_args *argp = rqstp->rq_argp;
118 struct nlm_host *host;
119 struct nlm_file *file;
120 struct nlm_lockowner *test_owner;
121 __be32 rc = rpc_success;
122
123 dprintk("lockd: TEST called\n");
124 resp->cookie = argp->cookie;
125
126 /* Obtain client and file */
127 if ((resp->status = nlmsvc_retrieve_args(rqstp, argp, &host, &file)))
128 return resp->status == nlm_drop_reply ? rpc_drop_reply :rpc_success;
129
130 test_owner = argp->lock.fl.fl_owner;
131
132 /* Now check for conflicting locks */
133 resp->status = cast_status(nlmsvc_testlock(rqstp, file, host, &argp->lock, &resp->lock, &resp->cookie));
134 if (resp->status == nlm_drop_reply)
135 rc = rpc_drop_reply;
136 else
137 dprintk("lockd: TEST status %d vers %d\n",
138 ntohl(resp->status), rqstp->rq_vers);
139
140 nlmsvc_put_lockowner(test_owner);
141 nlmsvc_release_host(host);
142 nlm_release_file(file);
143 return rc;
144}
145
146static __be32
147nlmsvc_proc_test(struct svc_rqst *rqstp)
148{
149 return __nlmsvc_proc_test(rqstp, rqstp->rq_resp);
150}
151
152static __be32
153__nlmsvc_proc_lock(struct svc_rqst *rqstp, struct nlm_res *resp)
154{
155 struct nlm_args *argp = rqstp->rq_argp;
156 struct nlm_host *host;
157 struct nlm_file *file;
158 __be32 rc = rpc_success;
159
160 dprintk("lockd: LOCK called\n");
161
162 resp->cookie = argp->cookie;
163
164 /* Obtain client and file */
165 if ((resp->status = nlmsvc_retrieve_args(rqstp, argp, &host, &file)))
166 return resp->status == nlm_drop_reply ? rpc_drop_reply :rpc_success;
167
168#if 0
169 /* If supplied state doesn't match current state, we assume it's
170 * an old request that time-warped somehow. Any error return would
171 * do in this case because it's irrelevant anyway.
172 *
173 * NB: We don't retrieve the remote host's state yet.
174 */
175 if (host->h_nsmstate && host->h_nsmstate != argp->state) {
176 resp->status = nlm_lck_denied_nolocks;
177 } else
178#endif
179
180 /* Now try to lock the file */
181 resp->status = cast_status(nlmsvc_lock(rqstp, file, host, &argp->lock,
182 argp->block, &argp->cookie,
183 argp->reclaim));
184 if (resp->status == nlm_drop_reply)
185 rc = rpc_drop_reply;
186 else
187 dprintk("lockd: LOCK status %d\n", ntohl(resp->status));
188
189 nlmsvc_release_lockowner(&argp->lock);
190 nlmsvc_release_host(host);
191 nlm_release_file(file);
192 return rc;
193}
194
195static __be32
196nlmsvc_proc_lock(struct svc_rqst *rqstp)
197{
198 return __nlmsvc_proc_lock(rqstp, rqstp->rq_resp);
199}
200
201static __be32
202__nlmsvc_proc_cancel(struct svc_rqst *rqstp, struct nlm_res *resp)
203{
204 struct nlm_args *argp = rqstp->rq_argp;
205 struct nlm_host *host;
206 struct nlm_file *file;
207 struct net *net = SVC_NET(rqstp);
208
209 dprintk("lockd: CANCEL called\n");
210
211 resp->cookie = argp->cookie;
212
213 /* Don't accept requests during grace period */
214 if (locks_in_grace(net)) {
215 resp->status = nlm_lck_denied_grace_period;
216 return rpc_success;
217 }
218
219 /* Obtain client and file */
220 if ((resp->status = nlmsvc_retrieve_args(rqstp, argp, &host, &file)))
221 return resp->status == nlm_drop_reply ? rpc_drop_reply :rpc_success;
222
223 /* Try to cancel request. */
224 resp->status = cast_status(nlmsvc_cancel_blocked(net, file, &argp->lock));
225
226 dprintk("lockd: CANCEL status %d\n", ntohl(resp->status));
227 nlmsvc_release_lockowner(&argp->lock);
228 nlmsvc_release_host(host);
229 nlm_release_file(file);
230 return rpc_success;
231}
232
233static __be32
234nlmsvc_proc_cancel(struct svc_rqst *rqstp)
235{
236 return __nlmsvc_proc_cancel(rqstp, rqstp->rq_resp);
237}
238
239/*
240 * UNLOCK: release a lock
241 */
242static __be32
243__nlmsvc_proc_unlock(struct svc_rqst *rqstp, struct nlm_res *resp)
244{
245 struct nlm_args *argp = rqstp->rq_argp;
246 struct nlm_host *host;
247 struct nlm_file *file;
248 struct net *net = SVC_NET(rqstp);
249
250 dprintk("lockd: UNLOCK called\n");
251
252 resp->cookie = argp->cookie;
253
254 /* Don't accept new lock requests during grace period */
255 if (locks_in_grace(net)) {
256 resp->status = nlm_lck_denied_grace_period;
257 return rpc_success;
258 }
259
260 /* Obtain client and file */
261 if ((resp->status = nlmsvc_retrieve_args(rqstp, argp, &host, &file)))
262 return resp->status == nlm_drop_reply ? rpc_drop_reply :rpc_success;
263
264 /* Now try to remove the lock */
265 resp->status = cast_status(nlmsvc_unlock(net, file, &argp->lock));
266
267 dprintk("lockd: UNLOCK status %d\n", ntohl(resp->status));
268 nlmsvc_release_lockowner(&argp->lock);
269 nlmsvc_release_host(host);
270 nlm_release_file(file);
271 return rpc_success;
272}
273
274static __be32
275nlmsvc_proc_unlock(struct svc_rqst *rqstp)
276{
277 return __nlmsvc_proc_unlock(rqstp, rqstp->rq_resp);
278}
279
280/*
281 * GRANTED: A server calls us to tell that a process' lock request
282 * was granted
283 */
284static __be32
285__nlmsvc_proc_granted(struct svc_rqst *rqstp, struct nlm_res *resp)
286{
287 struct nlm_args *argp = rqstp->rq_argp;
288
289 resp->cookie = argp->cookie;
290
291 dprintk("lockd: GRANTED called\n");
292 resp->status = nlmclnt_grant(svc_addr(rqstp), &argp->lock);
293 dprintk("lockd: GRANTED status %d\n", ntohl(resp->status));
294 return rpc_success;
295}
296
297static __be32
298nlmsvc_proc_granted(struct svc_rqst *rqstp)
299{
300 return __nlmsvc_proc_granted(rqstp, rqstp->rq_resp);
301}
302
303/*
304 * This is the generic lockd callback for async RPC calls
305 */
306static void nlmsvc_callback_exit(struct rpc_task *task, void *data)
307{
308}
309
310void nlmsvc_release_call(struct nlm_rqst *call)
311{
312 if (!refcount_dec_and_test(&call->a_count))
313 return;
314 nlmsvc_release_host(call->a_host);
315 kfree(call);
316}
317
318static void nlmsvc_callback_release(void *data)
319{
320 nlmsvc_release_call(data);
321}
322
323static const struct rpc_call_ops nlmsvc_callback_ops = {
324 .rpc_call_done = nlmsvc_callback_exit,
325 .rpc_release = nlmsvc_callback_release,
326};
327
328/*
329 * `Async' versions of the above service routines. They aren't really,
330 * because we send the callback before the reply proper. I hope this
331 * doesn't break any clients.
332 */
333static __be32 nlmsvc_callback(struct svc_rqst *rqstp, u32 proc,
334 __be32 (*func)(struct svc_rqst *, struct nlm_res *))
335{
336 struct nlm_args *argp = rqstp->rq_argp;
337 struct nlm_host *host;
338 struct nlm_rqst *call;
339 __be32 stat;
340
341 host = nlmsvc_lookup_host(rqstp,
342 argp->lock.caller,
343 argp->lock.len);
344 if (host == NULL)
345 return rpc_system_err;
346
347 call = nlm_alloc_call(host);
348 nlmsvc_release_host(host);
349 if (call == NULL)
350 return rpc_system_err;
351
352 stat = func(rqstp, &call->a_res);
353 if (stat != 0) {
354 nlmsvc_release_call(call);
355 return stat;
356 }
357
358 call->a_flags = RPC_TASK_ASYNC;
359 if (nlm_async_reply(call, proc, &nlmsvc_callback_ops) < 0)
360 return rpc_system_err;
361 return rpc_success;
362}
363
364static __be32 nlmsvc_proc_test_msg(struct svc_rqst *rqstp)
365{
366 dprintk("lockd: TEST_MSG called\n");
367 return nlmsvc_callback(rqstp, NLMPROC_TEST_RES, __nlmsvc_proc_test);
368}
369
370static __be32 nlmsvc_proc_lock_msg(struct svc_rqst *rqstp)
371{
372 dprintk("lockd: LOCK_MSG called\n");
373 return nlmsvc_callback(rqstp, NLMPROC_LOCK_RES, __nlmsvc_proc_lock);
374}
375
376static __be32 nlmsvc_proc_cancel_msg(struct svc_rqst *rqstp)
377{
378 dprintk("lockd: CANCEL_MSG called\n");
379 return nlmsvc_callback(rqstp, NLMPROC_CANCEL_RES, __nlmsvc_proc_cancel);
380}
381
382static __be32
383nlmsvc_proc_unlock_msg(struct svc_rqst *rqstp)
384{
385 dprintk("lockd: UNLOCK_MSG called\n");
386 return nlmsvc_callback(rqstp, NLMPROC_UNLOCK_RES, __nlmsvc_proc_unlock);
387}
388
389static __be32
390nlmsvc_proc_granted_msg(struct svc_rqst *rqstp)
391{
392 dprintk("lockd: GRANTED_MSG called\n");
393 return nlmsvc_callback(rqstp, NLMPROC_GRANTED_RES, __nlmsvc_proc_granted);
394}
395
396/*
397 * SHARE: create a DOS share or alter existing share.
398 */
399static __be32
400nlmsvc_proc_share(struct svc_rqst *rqstp)
401{
402 struct nlm_args *argp = rqstp->rq_argp;
403 struct nlm_res *resp = rqstp->rq_resp;
404 struct nlm_host *host;
405 struct nlm_file *file;
406
407 dprintk("lockd: SHARE called\n");
408
409 resp->cookie = argp->cookie;
410
411 /* Don't accept new lock requests during grace period */
412 if (locks_in_grace(SVC_NET(rqstp)) && !argp->reclaim) {
413 resp->status = nlm_lck_denied_grace_period;
414 return rpc_success;
415 }
416
417 /* Obtain client and file */
418 if ((resp->status = nlmsvc_retrieve_args(rqstp, argp, &host, &file)))
419 return resp->status == nlm_drop_reply ? rpc_drop_reply :rpc_success;
420
421 /* Now try to create the share */
422 resp->status = cast_status(nlmsvc_share_file(host, file, argp));
423
424 dprintk("lockd: SHARE status %d\n", ntohl(resp->status));
425 nlmsvc_release_lockowner(&argp->lock);
426 nlmsvc_release_host(host);
427 nlm_release_file(file);
428 return rpc_success;
429}
430
431/*
432 * UNSHARE: Release a DOS share.
433 */
434static __be32
435nlmsvc_proc_unshare(struct svc_rqst *rqstp)
436{
437 struct nlm_args *argp = rqstp->rq_argp;
438 struct nlm_res *resp = rqstp->rq_resp;
439 struct nlm_host *host;
440 struct nlm_file *file;
441
442 dprintk("lockd: UNSHARE called\n");
443
444 resp->cookie = argp->cookie;
445
446 /* Don't accept requests during grace period */
447 if (locks_in_grace(SVC_NET(rqstp))) {
448 resp->status = nlm_lck_denied_grace_period;
449 return rpc_success;
450 }
451
452 /* Obtain client and file */
453 if ((resp->status = nlmsvc_retrieve_args(rqstp, argp, &host, &file)))
454 return resp->status == nlm_drop_reply ? rpc_drop_reply :rpc_success;
455
456 /* Now try to unshare the file */
457 resp->status = cast_status(nlmsvc_unshare_file(host, file, argp));
458
459 dprintk("lockd: UNSHARE status %d\n", ntohl(resp->status));
460 nlmsvc_release_lockowner(&argp->lock);
461 nlmsvc_release_host(host);
462 nlm_release_file(file);
463 return rpc_success;
464}
465
466/*
467 * NM_LOCK: Create an unmonitored lock
468 */
469static __be32
470nlmsvc_proc_nm_lock(struct svc_rqst *rqstp)
471{
472 struct nlm_args *argp = rqstp->rq_argp;
473
474 dprintk("lockd: NM_LOCK called\n");
475
476 argp->monitor = 0; /* just clean the monitor flag */
477 return nlmsvc_proc_lock(rqstp);
478}
479
480/*
481 * FREE_ALL: Release all locks and shares held by client
482 */
483static __be32
484nlmsvc_proc_free_all(struct svc_rqst *rqstp)
485{
486 struct nlm_args *argp = rqstp->rq_argp;
487 struct nlm_host *host;
488
489 /* Obtain client */
490 if (nlmsvc_retrieve_args(rqstp, argp, &host, NULL))
491 return rpc_success;
492
493 nlmsvc_free_host_resources(host);
494 nlmsvc_release_host(host);
495 return rpc_success;
496}
497
498/*
499 * SM_NOTIFY: private callback from statd (not part of official NLM proto)
500 */
501static __be32
502nlmsvc_proc_sm_notify(struct svc_rqst *rqstp)
503{
504 struct nlm_reboot *argp = rqstp->rq_argp;
505
506 dprintk("lockd: SM_NOTIFY called\n");
507
508 if (!nlm_privileged_requester(rqstp)) {
509 char buf[RPC_MAX_ADDRBUFLEN];
510 printk(KERN_WARNING "lockd: rejected NSM callback from %s\n",
511 svc_print_addr(rqstp, buf, sizeof(buf)));
512 return rpc_system_err;
513 }
514
515 nlm_host_rebooted(SVC_NET(rqstp), argp);
516 return rpc_success;
517}
518
519/*
520 * client sent a GRANTED_RES, let's remove the associated block
521 */
522static __be32
523nlmsvc_proc_granted_res(struct svc_rqst *rqstp)
524{
525 struct nlm_res *argp = rqstp->rq_argp;
526
527 if (!nlmsvc_ops)
528 return rpc_success;
529
530 dprintk("lockd: GRANTED_RES called\n");
531
532 nlmsvc_grant_reply(&argp->cookie, argp->status);
533 return rpc_success;
534}
535
536static __be32
537nlmsvc_proc_unused(struct svc_rqst *rqstp)
538{
539 return rpc_proc_unavail;
540}
541
542/*
543 * NLM Server procedures.
544 */
545
546struct nlm_void { int dummy; };
547
548#define Ck (1+XDR_QUADLEN(NLM_MAXCOOKIELEN)) /* cookie */
549#define St 1 /* status */
550#define No (1+1024/4) /* Net Obj */
551#define Rg 2 /* range - offset + size */
552
553const struct svc_procedure nlmsvc_procedures[24] = {
554 [NLMPROC_NULL] = {
555 .pc_func = nlmsvc_proc_null,
556 .pc_decode = nlmsvc_decode_void,
557 .pc_encode = nlmsvc_encode_void,
558 .pc_argsize = sizeof(struct nlm_void),
559 .pc_argzero = sizeof(struct nlm_void),
560 .pc_ressize = sizeof(struct nlm_void),
561 .pc_xdrressize = St,
562 .pc_name = "NULL",
563 },
564 [NLMPROC_TEST] = {
565 .pc_func = nlmsvc_proc_test,
566 .pc_decode = nlmsvc_decode_testargs,
567 .pc_encode = nlmsvc_encode_testres,
568 .pc_argsize = sizeof(struct nlm_args),
569 .pc_argzero = sizeof(struct nlm_args),
570 .pc_ressize = sizeof(struct nlm_res),
571 .pc_xdrressize = Ck+St+2+No+Rg,
572 .pc_name = "TEST",
573 },
574 [NLMPROC_LOCK] = {
575 .pc_func = nlmsvc_proc_lock,
576 .pc_decode = nlmsvc_decode_lockargs,
577 .pc_encode = nlmsvc_encode_res,
578 .pc_argsize = sizeof(struct nlm_args),
579 .pc_argzero = sizeof(struct nlm_args),
580 .pc_ressize = sizeof(struct nlm_res),
581 .pc_xdrressize = Ck+St,
582 .pc_name = "LOCK",
583 },
584 [NLMPROC_CANCEL] = {
585 .pc_func = nlmsvc_proc_cancel,
586 .pc_decode = nlmsvc_decode_cancargs,
587 .pc_encode = nlmsvc_encode_res,
588 .pc_argsize = sizeof(struct nlm_args),
589 .pc_argzero = sizeof(struct nlm_args),
590 .pc_ressize = sizeof(struct nlm_res),
591 .pc_xdrressize = Ck+St,
592 .pc_name = "CANCEL",
593 },
594 [NLMPROC_UNLOCK] = {
595 .pc_func = nlmsvc_proc_unlock,
596 .pc_decode = nlmsvc_decode_unlockargs,
597 .pc_encode = nlmsvc_encode_res,
598 .pc_argsize = sizeof(struct nlm_args),
599 .pc_argzero = sizeof(struct nlm_args),
600 .pc_ressize = sizeof(struct nlm_res),
601 .pc_xdrressize = Ck+St,
602 .pc_name = "UNLOCK",
603 },
604 [NLMPROC_GRANTED] = {
605 .pc_func = nlmsvc_proc_granted,
606 .pc_decode = nlmsvc_decode_testargs,
607 .pc_encode = nlmsvc_encode_res,
608 .pc_argsize = sizeof(struct nlm_args),
609 .pc_argzero = sizeof(struct nlm_args),
610 .pc_ressize = sizeof(struct nlm_res),
611 .pc_xdrressize = Ck+St,
612 .pc_name = "GRANTED",
613 },
614 [NLMPROC_TEST_MSG] = {
615 .pc_func = nlmsvc_proc_test_msg,
616 .pc_decode = nlmsvc_decode_testargs,
617 .pc_encode = nlmsvc_encode_void,
618 .pc_argsize = sizeof(struct nlm_args),
619 .pc_argzero = sizeof(struct nlm_args),
620 .pc_ressize = sizeof(struct nlm_void),
621 .pc_xdrressize = St,
622 .pc_name = "TEST_MSG",
623 },
624 [NLMPROC_LOCK_MSG] = {
625 .pc_func = nlmsvc_proc_lock_msg,
626 .pc_decode = nlmsvc_decode_lockargs,
627 .pc_encode = nlmsvc_encode_void,
628 .pc_argsize = sizeof(struct nlm_args),
629 .pc_argzero = sizeof(struct nlm_args),
630 .pc_ressize = sizeof(struct nlm_void),
631 .pc_xdrressize = St,
632 .pc_name = "LOCK_MSG",
633 },
634 [NLMPROC_CANCEL_MSG] = {
635 .pc_func = nlmsvc_proc_cancel_msg,
636 .pc_decode = nlmsvc_decode_cancargs,
637 .pc_encode = nlmsvc_encode_void,
638 .pc_argsize = sizeof(struct nlm_args),
639 .pc_argzero = sizeof(struct nlm_args),
640 .pc_ressize = sizeof(struct nlm_void),
641 .pc_xdrressize = St,
642 .pc_name = "CANCEL_MSG",
643 },
644 [NLMPROC_UNLOCK_MSG] = {
645 .pc_func = nlmsvc_proc_unlock_msg,
646 .pc_decode = nlmsvc_decode_unlockargs,
647 .pc_encode = nlmsvc_encode_void,
648 .pc_argsize = sizeof(struct nlm_args),
649 .pc_argzero = sizeof(struct nlm_args),
650 .pc_ressize = sizeof(struct nlm_void),
651 .pc_xdrressize = St,
652 .pc_name = "UNLOCK_MSG",
653 },
654 [NLMPROC_GRANTED_MSG] = {
655 .pc_func = nlmsvc_proc_granted_msg,
656 .pc_decode = nlmsvc_decode_testargs,
657 .pc_encode = nlmsvc_encode_void,
658 .pc_argsize = sizeof(struct nlm_args),
659 .pc_argzero = sizeof(struct nlm_args),
660 .pc_ressize = sizeof(struct nlm_void),
661 .pc_xdrressize = St,
662 .pc_name = "GRANTED_MSG",
663 },
664 [NLMPROC_TEST_RES] = {
665 .pc_func = nlmsvc_proc_null,
666 .pc_decode = nlmsvc_decode_void,
667 .pc_encode = nlmsvc_encode_void,
668 .pc_argsize = sizeof(struct nlm_res),
669 .pc_argzero = sizeof(struct nlm_res),
670 .pc_ressize = sizeof(struct nlm_void),
671 .pc_xdrressize = St,
672 .pc_name = "TEST_RES",
673 },
674 [NLMPROC_LOCK_RES] = {
675 .pc_func = nlmsvc_proc_null,
676 .pc_decode = nlmsvc_decode_void,
677 .pc_encode = nlmsvc_encode_void,
678 .pc_argsize = sizeof(struct nlm_res),
679 .pc_argzero = sizeof(struct nlm_res),
680 .pc_ressize = sizeof(struct nlm_void),
681 .pc_xdrressize = St,
682 .pc_name = "LOCK_RES",
683 },
684 [NLMPROC_CANCEL_RES] = {
685 .pc_func = nlmsvc_proc_null,
686 .pc_decode = nlmsvc_decode_void,
687 .pc_encode = nlmsvc_encode_void,
688 .pc_argsize = sizeof(struct nlm_res),
689 .pc_argzero = sizeof(struct nlm_res),
690 .pc_ressize = sizeof(struct nlm_void),
691 .pc_xdrressize = St,
692 .pc_name = "CANCEL_RES",
693 },
694 [NLMPROC_UNLOCK_RES] = {
695 .pc_func = nlmsvc_proc_null,
696 .pc_decode = nlmsvc_decode_void,
697 .pc_encode = nlmsvc_encode_void,
698 .pc_argsize = sizeof(struct nlm_res),
699 .pc_argzero = sizeof(struct nlm_res),
700 .pc_ressize = sizeof(struct nlm_void),
701 .pc_xdrressize = St,
702 .pc_name = "UNLOCK_RES",
703 },
704 [NLMPROC_GRANTED_RES] = {
705 .pc_func = nlmsvc_proc_granted_res,
706 .pc_decode = nlmsvc_decode_res,
707 .pc_encode = nlmsvc_encode_void,
708 .pc_argsize = sizeof(struct nlm_res),
709 .pc_argzero = sizeof(struct nlm_res),
710 .pc_ressize = sizeof(struct nlm_void),
711 .pc_xdrressize = St,
712 .pc_name = "GRANTED_RES",
713 },
714 [NLMPROC_NSM_NOTIFY] = {
715 .pc_func = nlmsvc_proc_sm_notify,
716 .pc_decode = nlmsvc_decode_reboot,
717 .pc_encode = nlmsvc_encode_void,
718 .pc_argsize = sizeof(struct nlm_reboot),
719 .pc_argzero = sizeof(struct nlm_reboot),
720 .pc_ressize = sizeof(struct nlm_void),
721 .pc_xdrressize = St,
722 .pc_name = "SM_NOTIFY",
723 },
724 [17] = {
725 .pc_func = nlmsvc_proc_unused,
726 .pc_decode = nlmsvc_decode_void,
727 .pc_encode = nlmsvc_encode_void,
728 .pc_argsize = sizeof(struct nlm_void),
729 .pc_argzero = sizeof(struct nlm_void),
730 .pc_ressize = sizeof(struct nlm_void),
731 .pc_xdrressize = St,
732 .pc_name = "UNUSED",
733 },
734 [18] = {
735 .pc_func = nlmsvc_proc_unused,
736 .pc_decode = nlmsvc_decode_void,
737 .pc_encode = nlmsvc_encode_void,
738 .pc_argsize = sizeof(struct nlm_void),
739 .pc_argzero = sizeof(struct nlm_void),
740 .pc_ressize = sizeof(struct nlm_void),
741 .pc_xdrressize = St,
742 .pc_name = "UNUSED",
743 },
744 [19] = {
745 .pc_func = nlmsvc_proc_unused,
746 .pc_decode = nlmsvc_decode_void,
747 .pc_encode = nlmsvc_encode_void,
748 .pc_argsize = sizeof(struct nlm_void),
749 .pc_argzero = sizeof(struct nlm_void),
750 .pc_ressize = sizeof(struct nlm_void),
751 .pc_xdrressize = St,
752 .pc_name = "UNUSED",
753 },
754 [NLMPROC_SHARE] = {
755 .pc_func = nlmsvc_proc_share,
756 .pc_decode = nlmsvc_decode_shareargs,
757 .pc_encode = nlmsvc_encode_shareres,
758 .pc_argsize = sizeof(struct nlm_args),
759 .pc_argzero = sizeof(struct nlm_args),
760 .pc_ressize = sizeof(struct nlm_res),
761 .pc_xdrressize = Ck+St+1,
762 .pc_name = "SHARE",
763 },
764 [NLMPROC_UNSHARE] = {
765 .pc_func = nlmsvc_proc_unshare,
766 .pc_decode = nlmsvc_decode_shareargs,
767 .pc_encode = nlmsvc_encode_shareres,
768 .pc_argsize = sizeof(struct nlm_args),
769 .pc_argzero = sizeof(struct nlm_args),
770 .pc_ressize = sizeof(struct nlm_res),
771 .pc_xdrressize = Ck+St+1,
772 .pc_name = "UNSHARE",
773 },
774 [NLMPROC_NM_LOCK] = {
775 .pc_func = nlmsvc_proc_nm_lock,
776 .pc_decode = nlmsvc_decode_lockargs,
777 .pc_encode = nlmsvc_encode_res,
778 .pc_argsize = sizeof(struct nlm_args),
779 .pc_argzero = sizeof(struct nlm_args),
780 .pc_ressize = sizeof(struct nlm_res),
781 .pc_xdrressize = Ck+St,
782 .pc_name = "NM_LOCK",
783 },
784 [NLMPROC_FREE_ALL] = {
785 .pc_func = nlmsvc_proc_free_all,
786 .pc_decode = nlmsvc_decode_notify,
787 .pc_encode = nlmsvc_encode_void,
788 .pc_argsize = sizeof(struct nlm_args),
789 .pc_argzero = sizeof(struct nlm_args),
790 .pc_ressize = sizeof(struct nlm_void),
791 .pc_xdrressize = 0,
792 .pc_name = "FREE_ALL",
793 },
794};