net/sunrpc/rpcb_clnt.c

   1 /*
   2  * In-kernel rpcbind client supporting versions 2, 3, and 4 of the rpcbind
   3  * protocol
   4  *
   5  * Based on RFC 1833: "Binding Protocols for ONC RPC Version 2" and
   6  * RFC 3530: "Network File System (NFS) version 4 Protocol"
   7  *
   8  * Original: Gilles Quillard, Bull Open Source, 2005 <gilles.quillard@bull.net>
   9  * Updated: Chuck Lever, Oracle Corporation, 2007 <chuck.lever@oracle.com>
  10  *
  11  * Descended from net/sunrpc/pmap_clnt.c,
  12  *  Copyright (C) 1996, Olaf Kirch <okir@monad.swb.de>
  13  */
  14
  15 #include <linux/module.h>
  16
  17 #include <linux/types.h>
  18 #include <linux/socket.h>
  19 #include <linux/in.h>
  20 #include <linux/in6.h>
  21 #include <linux/kernel.h>
  22 #include <linux/errno.h>
  23
  24 #include <linux/sunrpc/clnt.h>
  25 #include <linux/sunrpc/sched.h>
  26 #include <linux/sunrpc/xprtsock.h>
  27
  28 #ifdef RPC_DEBUG
  29 # define RPCDBG_FACILITY        RPCDBG_BIND
  30 #endif
  31
  32 #define RPCBIND_PROGRAM         (100000u)
  33 #define RPCBIND_PORT            (111u)
  34
  35 enum {
  36         RPCBPROC_NULL,
  37         RPCBPROC_SET,
  38         RPCBPROC_UNSET,
  39         RPCBPROC_GETPORT,
  40         RPCBPROC_GETADDR = 3,           /* alias for GETPORT */
  41         RPCBPROC_DUMP,
  42         RPCBPROC_CALLIT,
  43         RPCBPROC_BCAST = 5,             /* alias for CALLIT */
  44         RPCBPROC_GETTIME,
  45         RPCBPROC_UADDR2TADDR,
  46         RPCBPROC_TADDR2UADDR,
  47         RPCBPROC_GETVERSADDR,
  48         RPCBPROC_INDIRECT,
  49         RPCBPROC_GETADDRLIST,
  50         RPCBPROC_GETSTAT,
  51 };
  52
  53 #define RPCB_HIGHPROC_2         RPCBPROC_CALLIT
  54 #define RPCB_HIGHPROC_3         RPCBPROC_TADDR2UADDR
  55 #define RPCB_HIGHPROC_4         RPCBPROC_GETSTAT
  56
  57 /*
  58  * r_owner
  59  *
  60  * The "owner" is allowed to unset a service in the rpcbind database.
  61  * We always use the following (arbitrary) fixed string.
  62  */
  63 #define RPCB_OWNER_STRING       "rpcb"
  64 #define RPCB_MAXOWNERLEN        sizeof(RPCB_OWNER_STRING)
  65
  66 static void                     rpcb_getport_done(struct rpc_task *, void *);
  67 static struct rpc_program       rpcb_program;
  68
  69 struct rpcbind_args {
  70         struct rpc_xprt *       r_xprt;
  71
  72         u32                     r_prog;
  73         u32                     r_vers;
  74         u32                     r_prot;
  75         unsigned short          r_port;
  76         const char *            r_netid;
  77         const char *            r_addr;
  78         const char *            r_owner;
  79 };
  80
  81 static struct rpc_procinfo rpcb_procedures2[];
  82 static struct rpc_procinfo rpcb_procedures3[];
  83
  84 struct rpcb_info {
  85         int                     rpc_vers;
  86         struct rpc_procinfo *   rpc_proc;
  87 };
  88
  89 static struct rpcb_info rpcb_next_version[];
  90 static struct rpcb_info rpcb_next_version6[];
  91
  92 static void rpcb_map_release(void *data)
  93 {
  94         struct rpcbind_args *map = data;
  95
  96         xprt_put(map->r_xprt);
  97         kfree(map);
  98 }
  99
 100 static const struct rpc_call_ops rpcb_getport_ops = {
 101         .rpc_call_done          = rpcb_getport_done,
 102         .rpc_release            = rpcb_map_release,
 103 };
 104
 105 static void rpcb_wake_rpcbind_waiters(struct rpc_xprt *xprt, int status)
 106 {
 107         xprt_clear_binding(xprt);
 108         rpc_wake_up_status(&xprt->binding, status);
 109 }
 110
 111 static struct rpc_clnt *rpcb_create(char *hostname, struct sockaddr *srvaddr,
 112                                     size_t salen, int proto, u32 version,
 113                                     int privileged)
 114 {
 115         struct rpc_create_args args = {
 116                 .protocol       = proto,
 117                 .address        = srvaddr,
 118                 .addrsize       = salen,
 119                 .servername     = hostname,
 120                 .program        = &rpcb_program,
 121                 .version        = version,
 122                 .authflavor     = RPC_AUTH_UNIX,
 123                 .flags          = (RPC_CLNT_CREATE_NOPING |
 124                                    RPC_CLNT_CREATE_INTR),
 125         };
 126
 127         switch (srvaddr->sa_family) {
 128         case AF_INET:
 129                 ((struct sockaddr_in *)srvaddr)->sin_port = htons(RPCBIND_PORT);
 130                 break;
 131         case AF_INET6:
 132                 ((struct sockaddr_in6 *)srvaddr)->sin6_port = htons(RPCBIND_PORT);
 133                 break;
 134         default:
 135                 return NULL;
 136         }
 137
 138         if (!privileged)
 139                 args.flags |= RPC_CLNT_CREATE_NONPRIVPORT;
 140         return rpc_create(&args);
 141 }
 142
 143 /**
 144  * rpcb_register - set or unset a port registration with the local rpcbind svc
 145  * @prog: RPC program number to bind
 146  * @vers: RPC version number to bind
 147  * @prot: transport protocol to use to make this request
 148  * @port: port value to register
 149  * @okay: result code
 150  *
 151  * port == 0 means unregister, port != 0 means register.
 152  *
 153  * This routine supports only rpcbind version 2.
 154  */
 155 int rpcb_register(u32 prog, u32 vers, int prot, unsigned short port, int *okay)
 156 {
 157         struct sockaddr_in sin = {
 158                 .sin_family             = AF_INET,
 159                 .sin_addr.s_addr        = htonl(INADDR_LOOPBACK),
 160         };
 161         struct rpcbind_args map = {
 162                 .r_prog         = prog,
 163                 .r_vers         = vers,
 164                 .r_prot         = prot,
 165                 .r_port         = port,
 166         };
 167         struct rpc_message msg = {
 168                 .rpc_proc       = &rpcb_procedures2[port ?
 169                                         RPCBPROC_SET : RPCBPROC_UNSET],
 170                 .rpc_argp       = &map,
 171                 .rpc_resp       = okay,
 172         };
 173         struct rpc_clnt *rpcb_clnt;
 174         int error = 0;
 175
 176         dprintk("RPC:       %sregistering (%u, %u, %d, %u) with local "
 177                         "rpcbind\n", (port ? "" : "un"),
 178                         prog, vers, prot, port);
 179
 180         rpcb_clnt = rpcb_create("localhost", (struct sockaddr *) &sin,
 181                                 sizeof(sin), XPRT_TRANSPORT_UDP, 2, 1);
 182         if (IS_ERR(rpcb_clnt))
 183                 return PTR_ERR(rpcb_clnt);
 184
 185         error = rpc_call_sync(rpcb_clnt, &msg, 0);
 186
 187         rpc_shutdown_client(rpcb_clnt);
 188         if (error < 0)
 189                 printk(KERN_WARNING "RPC: failed to contact local rpcbind "
 190                                 "server (errno %d).\n", -error);
 191         dprintk("RPC:       registration status %d/%d\n", error, *okay);
 192
 193         return error;
 194 }
 195
 196 /**
 197  * rpcb_getport_sync - obtain the port for an RPC service on a given host
 198  * @sin: address of remote peer
 199  * @prog: RPC program number to bind
 200  * @vers: RPC version number to bind
 201  * @prot: transport protocol to use to make this request
 202  *
 203  * Return value is the requested advertised port number,
 204  * or a negative errno value.
 205  *
 206  * Called from outside the RPC client in a synchronous task context.
 207  * Uses default timeout parameters specified by underlying transport.
 208  *
 209  * XXX: Needs to support IPv6
 210  */
 211 int rpcb_getport_sync(struct sockaddr_in *sin, u32 prog, u32 vers, int prot)
 212 {
 213         struct rpcbind_args map = {
 214                 .r_prog         = prog,
 215                 .r_vers         = vers,
 216                 .r_prot         = prot,
 217                 .r_port         = 0,
 218         };
 219         struct rpc_message msg = {
 220                 .rpc_proc       = &rpcb_procedures2[RPCBPROC_GETPORT],
 221                 .rpc_argp       = &map,
 222                 .rpc_resp       = &map.r_port,
 223         };
 224         struct rpc_clnt *rpcb_clnt;
 225         int status;
 226
 227         dprintk("RPC:       %s(" NIPQUAD_FMT ", %u, %u, %d)\n",
 228                 __FUNCTION__, NIPQUAD(sin->sin_addr.s_addr), prog, vers, prot);
 229
 230         rpcb_clnt = rpcb_create(NULL, (struct sockaddr *)sin,
 231                                 sizeof(*sin), prot, 2, 0);
 232         if (IS_ERR(rpcb_clnt))
 233                 return PTR_ERR(rpcb_clnt);
 234
 235         status = rpc_call_sync(rpcb_clnt, &msg, 0);
 236         rpc_shutdown_client(rpcb_clnt);
 237
 238         if (status >= 0) {
 239                 if (map.r_port != 0)
 240                         return map.r_port;
 241                 status = -EACCES;
 242         }
 243         return status;
 244 }
 245 EXPORT_SYMBOL_GPL(rpcb_getport_sync);
 246
 247 static struct rpc_task *rpcb_call_async(struct rpc_clnt *rpcb_clnt, struct rpcbind_args *map, int version)
 248 {
 249         struct rpc_message msg = {
 250                 .rpc_proc = rpcb_next_version[version].rpc_proc,
 251                 .rpc_argp = map,
 252                 .rpc_resp = &map->r_port,
 253         };
 254         struct rpc_task_setup task_setup_data = {
 255                 .rpc_client = rpcb_clnt,
 256                 .rpc_message = &msg,
 257                 .callback_ops = &rpcb_getport_ops,
 258                 .callback_data = map,
 259                 .flags = RPC_TASK_ASYNC,
 260         };
 261
 262         return rpc_run_task(&task_setup_data);
 263 }
 264
 265 /**
 266  * rpcb_getport_async - obtain the port for a given RPC service on a given host
 267  * @task: task that is waiting for portmapper request
 268  *
 269  * This one can be called for an ongoing RPC request, and can be used in
 270  * an async (rpciod) context.
 271  */
 272 void rpcb_getport_async(struct rpc_task *task)
 273 {
 274         struct rpc_clnt *clnt = task->tk_client;
 275         u32 bind_version;
 276         struct rpc_xprt *xprt = task->tk_xprt;
 277         struct rpc_clnt *rpcb_clnt;
 278         static struct rpcbind_args *map;
 279         struct rpc_task *child;
 280         struct sockaddr_storage addr;
 281         struct sockaddr *sap = (struct sockaddr *)&addr;
 282         size_t salen;
 283         int status;
 284         struct rpcb_info *info;
 285
 286         dprintk("RPC: %5u %s(%s, %u, %u, %d)\n",
 287                 task->tk_pid, __FUNCTION__,
 288                 clnt->cl_server, clnt->cl_prog, clnt->cl_vers, xprt->prot);
 289
 290         /* Autobind on cloned rpc clients is discouraged */
 291         BUG_ON(clnt->cl_parent != clnt);
 292
 293         if (xprt_test_and_set_binding(xprt)) {
 294                 status = -EAGAIN;       /* tell caller to check again */
 295                 dprintk("RPC: %5u %s: waiting for another binder\n",
 296                         task->tk_pid, __FUNCTION__);
 297                 goto bailout_nowake;
 298         }
 299
 300         /* Put self on queue before sending rpcbind request, in case
 301          * rpcb_getport_done completes before we return from rpc_run_task */
 302         rpc_sleep_on(&xprt->binding, task, NULL, NULL);
 303
 304         /* Someone else may have bound if we slept */
 305         if (xprt_bound(xprt)) {
 306                 status = 0;
 307                 dprintk("RPC: %5u %s: already bound\n",
 308                         task->tk_pid, __FUNCTION__);
 309                 goto bailout_nofree;
 310         }
 311
 312         salen = rpc_peeraddr(clnt, sap, sizeof(addr));
 313
 314         /* Don't ever use rpcbind v2 for AF_INET6 requests */
 315         switch (sap->sa_family) {
 316         case AF_INET:
 317                 info = rpcb_next_version;
 318                 break;
 319         case AF_INET6:
 320                 info = rpcb_next_version6;
 321                 break;
 322         default:
 323                 status = -EAFNOSUPPORT;
 324                 dprintk("RPC: %5u %s: bad address family\n",
 325                                 task->tk_pid, __FUNCTION__);
 326                 goto bailout_nofree;
 327         }
 328         if (info[xprt->bind_index].rpc_proc == NULL) {
 329                 xprt->bind_index = 0;
 330                 status = -EPFNOSUPPORT;
 331                 dprintk("RPC: %5u %s: no more getport versions available\n",
 332                         task->tk_pid, __FUNCTION__);
 333                 goto bailout_nofree;
 334         }
 335         bind_version = info[xprt->bind_index].rpc_vers;
 336
 337         dprintk("RPC: %5u %s: trying rpcbind version %u\n",
 338                 task->tk_pid, __FUNCTION__, bind_version);
 339
 340         rpcb_clnt = rpcb_create(clnt->cl_server, sap, salen, xprt->prot,
 341                                 bind_version, 0);
 342         if (IS_ERR(rpcb_clnt)) {
 343                 status = PTR_ERR(rpcb_clnt);
 344                 dprintk("RPC: %5u %s: rpcb_create failed, error %ld\n",
 345                         task->tk_pid, __FUNCTION__, PTR_ERR(rpcb_clnt));
 346                 goto bailout_nofree;
 347         }
 348
 349         map = kzalloc(sizeof(struct rpcbind_args), GFP_ATOMIC);
 350         if (!map) {
 351                 status = -ENOMEM;
 352                 dprintk("RPC: %5u %s: no memory available\n",
 353                         task->tk_pid, __FUNCTION__);
 354                 goto bailout_nofree;
 355         }
 356         map->r_prog = clnt->cl_prog;
 357         map->r_vers = clnt->cl_vers;
 358         map->r_prot = xprt->prot;
 359         map->r_port = 0;
 360         map->r_xprt = xprt_get(xprt);
 361         map->r_netid = rpc_peeraddr2str(clnt, RPC_DISPLAY_NETID);
 362         map->r_addr = rpc_peeraddr2str(rpcb_clnt, RPC_DISPLAY_UNIVERSAL_ADDR);
 363         map->r_owner = RPCB_OWNER_STRING;       /* ignored for GETADDR */
 364
 365         child = rpcb_call_async(rpcb_clnt, map, xprt->bind_index);
 366         rpc_release_client(rpcb_clnt);
 367         if (IS_ERR(child)) {
 368                 status = -EIO;
 369                 dprintk("RPC: %5u %s: rpc_run_task failed\n",
 370                         task->tk_pid, __FUNCTION__);
 371                 goto bailout;
 372         }
 373         rpc_put_task(child);
 374
 375         task->tk_xprt->stat.bind_count++;
 376         return;
 377
 378 bailout:
 379         kfree(map);
 380         xprt_put(xprt);
 381 bailout_nofree:
 382         rpcb_wake_rpcbind_waiters(xprt, status);
 383 bailout_nowake:
 384         task->tk_status = status;
 385 }
 386 EXPORT_SYMBOL_GPL(rpcb_getport_async);
 387
 388 /*
 389  * Rpcbind child task calls this callback via tk_exit.
 390  */
 391 static void rpcb_getport_done(struct rpc_task *child, void *data)
 392 {
 393         struct rpcbind_args *map = data;
 394         struct rpc_xprt *xprt = map->r_xprt;
 395         int status = child->tk_status;
 396
 397         /* Garbage reply: retry with a lesser rpcbind version */
 398         if (status == -EIO)
 399                 status = -EPROTONOSUPPORT;
 400
 401         /* rpcbind server doesn't support this rpcbind protocol version */
 402         if (status == -EPROTONOSUPPORT)
 403                 xprt->bind_index++;
 404
 405         if (status < 0) {
 406                 /* rpcbind server not available on remote host? */
 407                 xprt->ops->set_port(xprt, 0);
 408         } else if (map->r_port == 0) {
 409                 /* Requested RPC service wasn't registered on remote host */
 410                 xprt->ops->set_port(xprt, 0);
 411                 status = -EACCES;
 412         } else {
 413                 /* Succeeded */
 414                 xprt->ops->set_port(xprt, map->r_port);
 415                 xprt_set_bound(xprt);
 416                 status = 0;
 417         }
 418
 419         dprintk("RPC: %5u rpcb_getport_done(status %d, port %u)\n",
 420                         child->tk_pid, status, map->r_port);
 421
 422         rpcb_wake_rpcbind_waiters(xprt, status);
 423 }
 424
 425 static int rpcb_encode_mapping(struct rpc_rqst *req, __be32 *p,
 426                                struct rpcbind_args *rpcb)
 427 {
 428         dprintk("RPC:       rpcb_encode_mapping(%u, %u, %d, %u)\n",
 429                         rpcb->r_prog, rpcb->r_vers, rpcb->r_prot, rpcb->r_port);
 430         *p++ = htonl(rpcb->r_prog);
 431         *p++ = htonl(rpcb->r_vers);
 432         *p++ = htonl(rpcb->r_prot);
 433         *p++ = htonl(rpcb->r_port);
 434
 435         req->rq_slen = xdr_adjust_iovec(req->rq_svec, p);
 436         return 0;
 437 }
 438
 439 static int rpcb_decode_getport(struct rpc_rqst *req, __be32 *p,
 440                                unsigned short *portp)
 441 {
 442         *portp = (unsigned short) ntohl(*p++);
 443         dprintk("RPC:      rpcb_decode_getport result %u\n",
 444                         *portp);
 445         return 0;
 446 }
 447
 448 static int rpcb_decode_set(struct rpc_rqst *req, __be32 *p,
 449                            unsigned int *boolp)
 450 {
 451         *boolp = (unsigned int) ntohl(*p++);
 452         dprintk("RPC:      rpcb_decode_set result %u\n",
 453                         *boolp);
 454         return 0;
 455 }
 456
 457 static int rpcb_encode_getaddr(struct rpc_rqst *req, __be32 *p,
 458                                struct rpcbind_args *rpcb)
 459 {
 460         dprintk("RPC:       rpcb_encode_getaddr(%u, %u, %s)\n",
 461                         rpcb->r_prog, rpcb->r_vers, rpcb->r_addr);
 462         *p++ = htonl(rpcb->r_prog);
 463         *p++ = htonl(rpcb->r_vers);
 464
 465         p = xdr_encode_string(p, rpcb->r_netid);
 466         p = xdr_encode_string(p, rpcb->r_addr);
 467         p = xdr_encode_string(p, rpcb->r_owner);
 468
 469         req->rq_slen = xdr_adjust_iovec(req->rq_svec, p);
 470
 471         return 0;
 472 }
 473
 474 static int rpcb_decode_getaddr(struct rpc_rqst *req, __be32 *p,
 475                                unsigned short *portp)
 476 {
 477         char *addr;
 478         u32 addr_len;
 479         int c, i, f, first, val;
 480
 481         *portp = 0;
 482         addr_len = ntohl(*p++);
 483
 484         /*
 485          * Simple sanity check.  The smallest possible universal
 486          * address is an IPv4 address string containing 11 bytes.
 487          */
 488         if (addr_len < 11 || addr_len > RPCBIND_MAXUADDRLEN)
 489                 goto out_err;
 490
 491         /*
 492          * Start at the end and walk backwards until the first dot
 493          * is encountered.  When the second dot is found, we have
 494          * both parts of the port number.
 495          */
 496         addr = (char *)p;
 497         val = 0;
 498         first = 1;
 499         f = 1;
 500         for (i = addr_len - 1; i > 0; i--) {
 501                 c = addr[i];
 502                 if (c >= '0' && c <= '9') {
 503                         val += (c - '0') * f;
 504                         f *= 10;
 505                 } else if (c == '.') {
 506                         if (first) {
 507                                 *portp = val;
 508                                 val = first = 0;
 509                                 f = 1;
 510                         } else {
 511                                 *portp |= (val << 8);
 512                                 break;
 513                         }
 514                 }
 515         }
 516
 517         /*
 518          * Simple sanity check.  If we never saw a dot in the reply,
 519          * then this was probably just garbage.
 520          */
 521         if (first)
 522                 goto out_err;
 523
 524         dprintk("RPC:       rpcb_decode_getaddr port=%u\n", *portp);
 525         return 0;
 526
 527 out_err:
 528         dprintk("RPC:       rpcbind server returned malformed reply\n");
 529         return -EIO;
 530 }
 531
 532 #define RPCB_program_sz         (1u)
 533 #define RPCB_version_sz         (1u)
 534 #define RPCB_protocol_sz        (1u)
 535 #define RPCB_port_sz            (1u)
 536 #define RPCB_boolean_sz         (1u)
 537
 538 #define RPCB_netid_sz           (1+XDR_QUADLEN(RPCBIND_MAXNETIDLEN))
 539 #define RPCB_addr_sz            (1+XDR_QUADLEN(RPCBIND_MAXUADDRLEN))
 540 #define RPCB_ownerstring_sz     (1+XDR_QUADLEN(RPCB_MAXOWNERLEN))
 541
 542 #define RPCB_mappingargs_sz     RPCB_program_sz+RPCB_version_sz+        \
 543                                 RPCB_protocol_sz+RPCB_port_sz
 544 #define RPCB_getaddrargs_sz     RPCB_program_sz+RPCB_version_sz+        \
 545                                 RPCB_netid_sz+RPCB_addr_sz+             \
 546                                 RPCB_ownerstring_sz
 547
 548 #define RPCB_setres_sz          RPCB_boolean_sz
 549 #define RPCB_getportres_sz      RPCB_port_sz
 550
 551 /*
 552  * Note that RFC 1833 does not put any size restrictions on the
 553  * address string returned by the remote rpcbind database.
 554  */
 555 #define RPCB_getaddrres_sz      RPCB_addr_sz
 556
 557 #define PROC(proc, argtype, restype)                                    \
 558         [RPCBPROC_##proc] = {                                           \
 559                 .p_proc         = RPCBPROC_##proc,                      \
 560                 .p_encode       = (kxdrproc_t) rpcb_encode_##argtype,   \
 561                 .p_decode       = (kxdrproc_t) rpcb_decode_##restype,   \
 562                 .p_arglen       = RPCB_##argtype##args_sz,              \
 563                 .p_replen       = RPCB_##restype##res_sz,               \
 564                 .p_statidx      = RPCBPROC_##proc,                      \
 565                 .p_timer        = 0,                                    \
 566                 .p_name         = #proc,                                \
 567         }
 568
 569 /*
 570  * Not all rpcbind procedures described in RFC 1833 are implemented
 571  * since the Linux kernel RPC code requires only these.
 572  */
 573 static struct rpc_procinfo rpcb_procedures2[] = {
 574         PROC(SET,               mapping,        set),
 575         PROC(UNSET,             mapping,        set),
 576         PROC(GETADDR,           mapping,        getport),
 577 };
 578
 579 static struct rpc_procinfo rpcb_procedures3[] = {
 580         PROC(SET,               mapping,        set),
 581         PROC(UNSET,             mapping,        set),
 582         PROC(GETADDR,           getaddr,        getaddr),
 583 };
 584
 585 static struct rpc_procinfo rpcb_procedures4[] = {
 586         PROC(SET,               mapping,        set),
 587         PROC(UNSET,             mapping,        set),
 588         PROC(GETVERSADDR,       getaddr,        getaddr),
 589 };
 590
 591 static struct rpcb_info rpcb_next_version[] = {
 592 #ifdef CONFIG_SUNRPC_BIND34
 593         { 4, &rpcb_procedures4[RPCBPROC_GETVERSADDR] },
 594         { 3, &rpcb_procedures3[RPCBPROC_GETADDR] },
 595 #endif
 596         { 2, &rpcb_procedures2[RPCBPROC_GETPORT] },
 597         { 0, NULL },
 598 };
 599
 600 static struct rpcb_info rpcb_next_version6[] = {
 601 #ifdef CONFIG_SUNRPC_BIND34
 602         { 4, &rpcb_procedures4[RPCBPROC_GETVERSADDR] },
 603         { 3, &rpcb_procedures3[RPCBPROC_GETADDR] },
 604 #endif
 605         { 0, NULL },
 606 };
 607
 608 static struct rpc_version rpcb_version2 = {
 609         .number         = 2,
 610         .nrprocs        = RPCB_HIGHPROC_2,
 611         .procs          = rpcb_procedures2
 612 };
 613
 614 static struct rpc_version rpcb_version3 = {
 615         .number         = 3,
 616         .nrprocs        = RPCB_HIGHPROC_3,
 617         .procs          = rpcb_procedures3
 618 };
 619
 620 static struct rpc_version rpcb_version4 = {
 621         .number         = 4,
 622         .nrprocs        = RPCB_HIGHPROC_4,
 623         .procs          = rpcb_procedures4
 624 };
 625
 626 static struct rpc_version *rpcb_version[] = {
 627         NULL,
 628         NULL,
 629         &rpcb_version2,
 630         &rpcb_version3,
 631         &rpcb_version4
 632 };
 633
 634 static struct rpc_stat rpcb_stats;
 635
 636 static struct rpc_program rpcb_program = {
 637         .name           = "rpcbind",
 638         .number         = RPCBIND_PROGRAM,
 639         .nrvers         = ARRAY_SIZE(rpcb_version),
 640         .version        = rpcb_version,
 641         .stats          = &rpcb_stats,
 642 };