1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * linux/fs/lockd/svc.c 4 * 5 * This is the central lockd service. 6 * 7 * FIXME: Separate the lockd NFS server functionality from the lockd NFS 8 * client functionality. Oh why didn't Sun create two separate 9 * services in the first place? 10 * 11 * Authors: Olaf Kirch (okir@monad.swb.de) 12 * 13 * Copyright (C) 1995, 1996 Olaf Kirch <okir@monad.swb.de> 14 */ 15 16 #include <linux/module.h> 17 #include <linux/init.h> 18 #include <linux/sysctl.h> 19 #include <linux/moduleparam.h> 20 21 #include <linux/sched/signal.h> 22 #include <linux/errno.h> 23 #include <linux/in.h> 24 #include <linux/uio.h> 25 #include <linux/smp.h> 26 #include <linux/mutex.h> 27 #include <linux/freezer.h> 28 #include <linux/inetdevice.h> 29 30 #include <linux/sunrpc/types.h> 31 #include <linux/sunrpc/stats.h> 32 #include <linux/sunrpc/clnt.h> 33 #include <linux/sunrpc/svc.h> 34 #include <linux/sunrpc/svcsock.h> 35 #include <linux/sunrpc/svc_xprt.h> 36 #include <net/ip.h> 37 #include <net/addrconf.h> 38 #include <net/ipv6.h> 39 #include <linux/lockd/lockd.h> 40 #include <linux/nfs.h> 41 42 #include "netns.h" 43 #include "procfs.h" 44 45 #define NLMDBG_FACILITY NLMDBG_SVC 46 #define LOCKD_BUFSIZE (1024 + NLMSVC_XDRSIZE) 47 48 static struct svc_program nlmsvc_program; 49 50 const struct nlmsvc_binding *nlmsvc_ops; 51 EXPORT_SYMBOL_GPL(nlmsvc_ops); 52 53 static DEFINE_MUTEX(nlmsvc_mutex); 54 static unsigned int nlmsvc_users; 55 static struct svc_serv *nlmsvc_serv; 56 57 static void nlmsvc_request_retry(struct timer_list *tl) 58 { 59 svc_wake_up(nlmsvc_serv); 60 } 61 DEFINE_TIMER(nlmsvc_retry, nlmsvc_request_retry); 62 63 unsigned int lockd_net_id; 64 65 /* 66 * These can be set at insmod time (useful for NFS as root filesystem), 67 * and also changed through the sysctl interface. -- Jamie Lokier, Aug 2003 68 */ 69 static unsigned long nlm_grace_period; 70 unsigned long nlm_timeout = LOCKD_DFLT_TIMEO; 71 static int nlm_udpport, nlm_tcpport; 72 73 /* 74 * Constants needed for the sysctl interface. 75 */ 76 static const unsigned long nlm_grace_period_min = 0; 77 static const unsigned long nlm_grace_period_max = 240; 78 static const unsigned long nlm_timeout_min = 3; 79 static const unsigned long nlm_timeout_max = 20; 80 81 #ifdef CONFIG_SYSCTL 82 static const int nlm_port_min = 0, nlm_port_max = 65535; 83 static struct ctl_table_header * nlm_sysctl_table; 84 #endif 85 86 static unsigned long get_lockd_grace_period(void) 87 { 88 /* Note: nlm_timeout should always be nonzero */ 89 if (nlm_grace_period) 90 return roundup(nlm_grace_period, nlm_timeout) * HZ; 91 else 92 return nlm_timeout * 5 * HZ; 93 } 94 95 static void grace_ender(struct work_struct *grace) 96 { 97 struct delayed_work *dwork = to_delayed_work(grace); 98 struct lockd_net *ln = container_of(dwork, struct lockd_net, 99 grace_period_end); 100 101 locks_end_grace(&ln->lockd_manager); 102 } 103 104 static void set_grace_period(struct net *net) 105 { 106 unsigned long grace_period = get_lockd_grace_period(); 107 struct lockd_net *ln = net_generic(net, lockd_net_id); 108 109 locks_start_grace(net, &ln->lockd_manager); 110 cancel_delayed_work_sync(&ln->grace_period_end); 111 schedule_delayed_work(&ln->grace_period_end, grace_period); 112 } 113 114 /* 115 * This is the lockd kernel thread 116 */ 117 static int 118 lockd(void *vrqstp) 119 { 120 struct svc_rqst *rqstp = vrqstp; 121 struct net *net = &init_net; 122 struct lockd_net *ln = net_generic(net, lockd_net_id); 123 124 svc_thread_init_status(rqstp, 0); 125 126 /* try_to_freeze() is called from svc_recv() */ 127 set_freezable(); 128 129 dprintk("NFS locking service started (ver " LOCKD_VERSION ").\n"); 130 131 /* 132 * The main request loop. We don't terminate until the last 133 * NFS mount or NFS daemon has gone away. 134 */ 135 while (!svc_thread_should_stop(rqstp)) { 136 nlmsvc_retry_blocked(rqstp); 137 svc_recv(rqstp); 138 } 139 if (nlmsvc_ops) 140 nlmsvc_invalidate_all(); 141 nlm_shutdown_hosts(); 142 cancel_delayed_work_sync(&ln->grace_period_end); 143 locks_end_grace(&ln->lockd_manager); 144 145 dprintk("lockd_down: service stopped\n"); 146 147 svc_exit_thread(rqstp); 148 return 0; 149 } 150 151 static int create_lockd_listener(struct svc_serv *serv, const char *name, 152 struct net *net, const int family, 153 const unsigned short port, 154 const struct cred *cred) 155 { 156 struct svc_xprt *xprt; 157 158 xprt = svc_find_xprt(serv, name, net, family, 0); 159 if (xprt == NULL) 160 return svc_xprt_create(serv, name, net, family, port, 161 SVC_SOCK_DEFAULTS, cred); 162 svc_xprt_put(xprt); 163 return 0; 164 } 165 166 static int create_lockd_family(struct svc_serv *serv, struct net *net, 167 const int family, const struct cred *cred) 168 { 169 int err; 170 171 err = create_lockd_listener(serv, "udp", net, family, nlm_udpport, 172 cred); 173 if (err < 0) 174 return err; 175 176 return create_lockd_listener(serv, "tcp", net, family, nlm_tcpport, 177 cred); 178 } 179 180 /* 181 * Ensure there are active UDP and TCP listeners for lockd. 182 * 183 * Even if we have only TCP NFS mounts and/or TCP NFSDs, some 184 * local services (such as rpc.statd) still require UDP, and 185 * some NFS servers do not yet support NLM over TCP. 186 * 187 * Returns zero if all listeners are available; otherwise a 188 * negative errno value is returned. 189 */ 190 static int make_socks(struct svc_serv *serv, struct net *net, 191 const struct cred *cred) 192 { 193 static int warned; 194 int err; 195 196 err = create_lockd_family(serv, net, PF_INET, cred); 197 if (err < 0) 198 goto out_err; 199 200 err = create_lockd_family(serv, net, PF_INET6, cred); 201 if (err < 0 && err != -EAFNOSUPPORT) 202 goto out_err; 203 204 warned = 0; 205 return 0; 206 207 out_err: 208 if (warned++ == 0) 209 printk(KERN_WARNING 210 "lockd_up: makesock failed, error=%d\n", err); 211 svc_xprt_destroy_all(serv, net); 212 svc_rpcb_cleanup(serv, net); 213 return err; 214 } 215 216 static int lockd_up_net(struct svc_serv *serv, struct net *net, 217 const struct cred *cred) 218 { 219 struct lockd_net *ln = net_generic(net, lockd_net_id); 220 int error; 221 222 if (ln->nlmsvc_users++) 223 return 0; 224 225 error = svc_bind(serv, net); 226 if (error) 227 goto err_bind; 228 229 error = make_socks(serv, net, cred); 230 if (error < 0) 231 goto err_bind; 232 set_grace_period(net); 233 dprintk("%s: per-net data created; net=%x\n", __func__, net->ns.inum); 234 return 0; 235 236 err_bind: 237 ln->nlmsvc_users--; 238 return error; 239 } 240 241 static void lockd_down_net(struct svc_serv *serv, struct net *net) 242 { 243 struct lockd_net *ln = net_generic(net, lockd_net_id); 244 245 if (ln->nlmsvc_users) { 246 if (--ln->nlmsvc_users == 0) { 247 nlm_shutdown_hosts_net(net); 248 cancel_delayed_work_sync(&ln->grace_period_end); 249 locks_end_grace(&ln->lockd_manager); 250 svc_xprt_destroy_all(serv, net); 251 svc_rpcb_cleanup(serv, net); 252 } 253 } else { 254 pr_err("%s: no users! net=%x\n", 255 __func__, net->ns.inum); 256 BUG(); 257 } 258 } 259 260 static int lockd_inetaddr_event(struct notifier_block *this, 261 unsigned long event, void *ptr) 262 { 263 struct in_ifaddr *ifa = (struct in_ifaddr *)ptr; 264 struct sockaddr_in sin; 265 266 if (event != NETDEV_DOWN) 267 goto out; 268 269 if (nlmsvc_serv) { 270 dprintk("lockd_inetaddr_event: removed %pI4\n", 271 &ifa->ifa_local); 272 sin.sin_family = AF_INET; 273 sin.sin_addr.s_addr = ifa->ifa_local; 274 svc_age_temp_xprts_now(nlmsvc_serv, (struct sockaddr *)&sin); 275 } 276 277 out: 278 return NOTIFY_DONE; 279 } 280 281 static struct notifier_block lockd_inetaddr_notifier = { 282 .notifier_call = lockd_inetaddr_event, 283 }; 284 285 #if IS_ENABLED(CONFIG_IPV6) 286 static int lockd_inet6addr_event(struct notifier_block *this, 287 unsigned long event, void *ptr) 288 { 289 struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)ptr; 290 struct sockaddr_in6 sin6; 291 292 if (event != NETDEV_DOWN) 293 goto out; 294 295 if (nlmsvc_serv) { 296 dprintk("lockd_inet6addr_event: removed %pI6\n", &ifa->addr); 297 sin6.sin6_family = AF_INET6; 298 sin6.sin6_addr = ifa->addr; 299 if (ipv6_addr_type(&sin6.sin6_addr) & IPV6_ADDR_LINKLOCAL) 300 sin6.sin6_scope_id = ifa->idev->dev->ifindex; 301 svc_age_temp_xprts_now(nlmsvc_serv, (struct sockaddr *)&sin6); 302 } 303 304 out: 305 return NOTIFY_DONE; 306 } 307 308 static struct notifier_block lockd_inet6addr_notifier = { 309 .notifier_call = lockd_inet6addr_event, 310 }; 311 #endif 312 313 static int lockd_get(void) 314 { 315 struct svc_serv *serv; 316 int error; 317 318 if (nlmsvc_serv) { 319 nlmsvc_users++; 320 return 0; 321 } 322 323 /* 324 * Sanity check: if there's no pid, 325 * we should be the first user ... 326 */ 327 if (nlmsvc_users) 328 printk(KERN_WARNING 329 "lockd_up: no pid, %d users??\n", nlmsvc_users); 330 331 serv = svc_create(&nlmsvc_program, LOCKD_BUFSIZE, lockd); 332 if (!serv) { 333 printk(KERN_WARNING "lockd_up: create service failed\n"); 334 return -ENOMEM; 335 } 336 337 error = svc_set_num_threads(serv, NULL, 1); 338 if (error < 0) { 339 svc_destroy(&serv); 340 return error; 341 } 342 343 nlmsvc_serv = serv; 344 register_inetaddr_notifier(&lockd_inetaddr_notifier); 345 #if IS_ENABLED(CONFIG_IPV6) 346 register_inet6addr_notifier(&lockd_inet6addr_notifier); 347 #endif 348 dprintk("lockd_up: service created\n"); 349 nlmsvc_users++; 350 return 0; 351 } 352 353 static void lockd_put(void) 354 { 355 if (WARN(nlmsvc_users <= 0, "lockd_down: no users!\n")) 356 return; 357 if (--nlmsvc_users) 358 return; 359 360 unregister_inetaddr_notifier(&lockd_inetaddr_notifier); 361 #if IS_ENABLED(CONFIG_IPV6) 362 unregister_inet6addr_notifier(&lockd_inet6addr_notifier); 363 #endif 364 365 svc_set_num_threads(nlmsvc_serv, NULL, 0); 366 timer_delete_sync(&nlmsvc_retry); 367 svc_destroy(&nlmsvc_serv); 368 dprintk("lockd_down: service destroyed\n"); 369 } 370 371 /* 372 * Bring up the lockd process if it's not already up. 373 */ 374 int lockd_up(struct net *net, const struct cred *cred) 375 { 376 int error; 377 378 mutex_lock(&nlmsvc_mutex); 379 380 error = lockd_get(); 381 if (error) 382 goto err; 383 384 error = lockd_up_net(nlmsvc_serv, net, cred); 385 if (error < 0) { 386 lockd_put(); 387 goto err; 388 } 389 390 err: 391 mutex_unlock(&nlmsvc_mutex); 392 return error; 393 } 394 EXPORT_SYMBOL_GPL(lockd_up); 395 396 /* 397 * Decrement the user count and bring down lockd if we're the last. 398 */ 399 void 400 lockd_down(struct net *net) 401 { 402 mutex_lock(&nlmsvc_mutex); 403 lockd_down_net(nlmsvc_serv, net); 404 lockd_put(); 405 mutex_unlock(&nlmsvc_mutex); 406 } 407 EXPORT_SYMBOL_GPL(lockd_down); 408 409 #ifdef CONFIG_SYSCTL 410 411 /* 412 * Sysctl parameters (same as module parameters, different interface). 413 */ 414 415 static const struct ctl_table nlm_sysctls[] = { 416 { 417 .procname = "nlm_grace_period", 418 .data = &nlm_grace_period, 419 .maxlen = sizeof(unsigned long), 420 .mode = 0644, 421 .proc_handler = proc_doulongvec_minmax, 422 .extra1 = (unsigned long *) &nlm_grace_period_min, 423 .extra2 = (unsigned long *) &nlm_grace_period_max, 424 }, 425 { 426 .procname = "nlm_timeout", 427 .data = &nlm_timeout, 428 .maxlen = sizeof(unsigned long), 429 .mode = 0644, 430 .proc_handler = proc_doulongvec_minmax, 431 .extra1 = (unsigned long *) &nlm_timeout_min, 432 .extra2 = (unsigned long *) &nlm_timeout_max, 433 }, 434 { 435 .procname = "nlm_udpport", 436 .data = &nlm_udpport, 437 .maxlen = sizeof(int), 438 .mode = 0644, 439 .proc_handler = proc_dointvec_minmax, 440 .extra1 = (int *) &nlm_port_min, 441 .extra2 = (int *) &nlm_port_max, 442 }, 443 { 444 .procname = "nlm_tcpport", 445 .data = &nlm_tcpport, 446 .maxlen = sizeof(int), 447 .mode = 0644, 448 .proc_handler = proc_dointvec_minmax, 449 .extra1 = (int *) &nlm_port_min, 450 .extra2 = (int *) &nlm_port_max, 451 }, 452 { 453 .procname = "nsm_use_hostnames", 454 .data = &nsm_use_hostnames, 455 .maxlen = sizeof(bool), 456 .mode = 0644, 457 .proc_handler = proc_dobool, 458 }, 459 { 460 .procname = "nsm_local_state", 461 .data = &nsm_local_state, 462 .maxlen = sizeof(int), 463 .mode = 0644, 464 .proc_handler = proc_dointvec, 465 }, 466 }; 467 468 #endif /* CONFIG_SYSCTL */ 469 470 /* 471 * Module (and sysfs) parameters. 472 */ 473 474 #define param_set_min_max(name, type, which_strtol, min, max) \ 475 static int param_set_##name(const char *val, const struct kernel_param *kp) \ 476 { \ 477 char *endp; \ 478 __typeof__(type) num = which_strtol(val, &endp, 0); \ 479 if (endp == val || *endp || num < (min) || num > (max)) \ 480 return -EINVAL; \ 481 *((type *) kp->arg) = num; \ 482 return 0; \ 483 } 484 485 static inline int is_callback(u32 proc) 486 { 487 return proc == NLMPROC_GRANTED 488 || proc == NLMPROC_GRANTED_MSG 489 || proc == NLMPROC_TEST_RES 490 || proc == NLMPROC_LOCK_RES 491 || proc == NLMPROC_CANCEL_RES 492 || proc == NLMPROC_UNLOCK_RES 493 || proc == NLMPROC_NSM_NOTIFY; 494 } 495 496 497 static enum svc_auth_status lockd_authenticate(struct svc_rqst *rqstp) 498 { 499 rqstp->rq_client = NULL; 500 switch (rqstp->rq_authop->flavour) { 501 case RPC_AUTH_NULL: 502 case RPC_AUTH_UNIX: 503 rqstp->rq_auth_stat = rpc_auth_ok; 504 if (rqstp->rq_proc == 0) 505 return SVC_OK; 506 if (is_callback(rqstp->rq_proc)) { 507 /* Leave it to individual procedures to 508 * call nlmsvc_lookup_host(rqstp) 509 */ 510 return SVC_OK; 511 } 512 return svc_set_client(rqstp); 513 } 514 rqstp->rq_auth_stat = rpc_autherr_badcred; 515 return SVC_DENIED; 516 } 517 518 519 param_set_min_max(port, int, simple_strtol, 0, 65535) 520 param_set_min_max(grace_period, unsigned long, simple_strtoul, 521 nlm_grace_period_min, nlm_grace_period_max) 522 param_set_min_max(timeout, unsigned long, simple_strtoul, 523 nlm_timeout_min, nlm_timeout_max) 524 525 MODULE_AUTHOR("Olaf Kirch <okir@monad.swb.de>"); 526 MODULE_DESCRIPTION("NFS file locking service version " LOCKD_VERSION "."); 527 MODULE_LICENSE("GPL"); 528 529 module_param_call(nlm_grace_period, param_set_grace_period, param_get_ulong, 530 &nlm_grace_period, 0644); 531 module_param_call(nlm_timeout, param_set_timeout, param_get_ulong, 532 &nlm_timeout, 0644); 533 module_param_call(nlm_udpport, param_set_port, param_get_int, 534 &nlm_udpport, 0644); 535 module_param_call(nlm_tcpport, param_set_port, param_get_int, 536 &nlm_tcpport, 0644); 537 module_param(nsm_use_hostnames, bool, 0644); 538 539 static int lockd_init_net(struct net *net) 540 { 541 struct lockd_net *ln = net_generic(net, lockd_net_id); 542 543 INIT_DELAYED_WORK(&ln->grace_period_end, grace_ender); 544 INIT_LIST_HEAD(&ln->lockd_manager.list); 545 ln->lockd_manager.block_opens = false; 546 INIT_LIST_HEAD(&ln->nsm_handles); 547 return 0; 548 } 549 550 static void lockd_exit_net(struct net *net) 551 { 552 struct lockd_net *ln = net_generic(net, lockd_net_id); 553 554 WARN_ONCE(!list_empty(&ln->lockd_manager.list), 555 "net %x %s: lockd_manager.list is not empty\n", 556 net->ns.inum, __func__); 557 WARN_ONCE(!list_empty(&ln->nsm_handles), 558 "net %x %s: nsm_handles list is not empty\n", 559 net->ns.inum, __func__); 560 WARN_ONCE(delayed_work_pending(&ln->grace_period_end), 561 "net %x %s: grace_period_end was not cancelled\n", 562 net->ns.inum, __func__); 563 } 564 565 static struct pernet_operations lockd_net_ops = { 566 .init = lockd_init_net, 567 .exit = lockd_exit_net, 568 .id = &lockd_net_id, 569 .size = sizeof(struct lockd_net), 570 }; 571 572 573 /* 574 * Initialising and terminating the module. 575 */ 576 577 static int __init init_nlm(void) 578 { 579 int err; 580 581 #ifdef CONFIG_SYSCTL 582 err = -ENOMEM; 583 nlm_sysctl_table = register_sysctl("fs/nfs", nlm_sysctls); 584 if (nlm_sysctl_table == NULL) 585 goto err_sysctl; 586 #endif 587 err = register_pernet_subsys(&lockd_net_ops); 588 if (err) 589 goto err_pernet; 590 591 err = lockd_create_procfs(); 592 if (err) 593 goto err_procfs; 594 595 return 0; 596 597 err_procfs: 598 unregister_pernet_subsys(&lockd_net_ops); 599 err_pernet: 600 #ifdef CONFIG_SYSCTL 601 unregister_sysctl_table(nlm_sysctl_table); 602 err_sysctl: 603 #endif 604 return err; 605 } 606 607 static void __exit exit_nlm(void) 608 { 609 /* FIXME: delete all NLM clients */ 610 nlm_shutdown_hosts(); 611 lockd_remove_procfs(); 612 unregister_pernet_subsys(&lockd_net_ops); 613 #ifdef CONFIG_SYSCTL 614 unregister_sysctl_table(nlm_sysctl_table); 615 #endif 616 } 617 618 module_init(init_nlm); 619 module_exit(exit_nlm); 620 621 /** 622 * nlmsvc_dispatch - Process an NLM Request 623 * @rqstp: incoming request 624 * 625 * Return values: 626 * %0: Processing complete; do not send a Reply 627 * %1: Processing complete; send Reply in rqstp->rq_res 628 */ 629 static int nlmsvc_dispatch(struct svc_rqst *rqstp) 630 { 631 const struct svc_procedure *procp = rqstp->rq_procinfo; 632 __be32 *statp = rqstp->rq_accept_statp; 633 634 if (!procp->pc_decode(rqstp, &rqstp->rq_arg_stream)) 635 goto out_decode_err; 636 637 *statp = procp->pc_func(rqstp); 638 if (*statp == rpc_drop_reply) 639 return 0; 640 if (*statp != rpc_success) 641 return 1; 642 643 if (!procp->pc_encode(rqstp, &rqstp->rq_res_stream)) 644 goto out_encode_err; 645 646 return 1; 647 648 out_decode_err: 649 *statp = rpc_garbage_args; 650 return 1; 651 652 out_encode_err: 653 *statp = rpc_system_err; 654 return 1; 655 } 656 657 /* 658 * Define NLM program and procedures 659 */ 660 static DEFINE_PER_CPU_ALIGNED(unsigned long, nlmsvc_version1_count[17]); 661 static const struct svc_version nlmsvc_version1 = { 662 .vs_vers = 1, 663 .vs_nproc = 17, 664 .vs_proc = nlmsvc_procedures, 665 .vs_count = nlmsvc_version1_count, 666 .vs_dispatch = nlmsvc_dispatch, 667 .vs_xdrsize = NLMSVC_XDRSIZE, 668 }; 669 670 static DEFINE_PER_CPU_ALIGNED(unsigned long, 671 nlmsvc_version3_count[ARRAY_SIZE(nlmsvc_procedures)]); 672 static const struct svc_version nlmsvc_version3 = { 673 .vs_vers = 3, 674 .vs_nproc = ARRAY_SIZE(nlmsvc_procedures), 675 .vs_proc = nlmsvc_procedures, 676 .vs_count = nlmsvc_version3_count, 677 .vs_dispatch = nlmsvc_dispatch, 678 .vs_xdrsize = NLMSVC_XDRSIZE, 679 }; 680 681 #ifdef CONFIG_LOCKD_V4 682 static DEFINE_PER_CPU_ALIGNED(unsigned long, 683 nlmsvc_version4_count[ARRAY_SIZE(nlmsvc_procedures4)]); 684 static const struct svc_version nlmsvc_version4 = { 685 .vs_vers = 4, 686 .vs_nproc = ARRAY_SIZE(nlmsvc_procedures4), 687 .vs_proc = nlmsvc_procedures4, 688 .vs_count = nlmsvc_version4_count, 689 .vs_dispatch = nlmsvc_dispatch, 690 .vs_xdrsize = NLMSVC_XDRSIZE, 691 }; 692 #endif 693 694 static const struct svc_version *nlmsvc_version[] = { 695 [1] = &nlmsvc_version1, 696 [3] = &nlmsvc_version3, 697 #ifdef CONFIG_LOCKD_V4 698 [4] = &nlmsvc_version4, 699 #endif 700 }; 701 702 #define NLM_NRVERS ARRAY_SIZE(nlmsvc_version) 703 static struct svc_program nlmsvc_program = { 704 .pg_prog = NLM_PROGRAM, /* program number */ 705 .pg_nvers = NLM_NRVERS, /* number of entries in nlmsvc_version */ 706 .pg_vers = nlmsvc_version, /* version table */ 707 .pg_name = "lockd", /* service name */ 708 .pg_class = "nfsd", /* share authentication with nfsd */ 709 .pg_authenticate = &lockd_authenticate, /* export authentication */ 710 .pg_init_request = svc_generic_init_request, 711 .pg_rpcbind_set = svc_generic_rpcbind_set, 712 }; 713