fs/lockd/svcproc.c

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