2 * In-kernel rpcbind client supporting versions 2, 3, and 4 of the rpcbind
5 * Based on RFC 1833: "Binding Protocols for ONC RPC Version 2" and
6 * RFC 3530: "Network File System (NFS) version 4 Protocol"
8 * Original: Gilles Quillard, Bull Open Source, 2005 <gilles.quillard@bull.net>
9 * Updated: Chuck Lever, Oracle Corporation, 2007 <chuck.lever@oracle.com>
11 * Descended from net/sunrpc/pmap_clnt.c,
12 * Copyright (C) 1996, Olaf Kirch <okir@monad.swb.de>
15 #include <linux/module.h>
17 #include <linux/types.h>
18 #include <linux/socket.h>
20 #include <linux/in6.h>
21 #include <linux/kernel.h>
22 #include <linux/errno.h>
25 #include <linux/sunrpc/clnt.h>
26 #include <linux/sunrpc/sched.h>
27 #include <linux/sunrpc/xprtsock.h>
30 # define RPCDBG_FACILITY RPCDBG_BIND
33 #define RPCBIND_PROGRAM (100000u)
34 #define RPCBIND_PORT (111u)
36 #define RPCBVERS_2 (2u)
37 #define RPCBVERS_3 (3u)
38 #define RPCBVERS_4 (4u)
45 RPCBPROC_GETADDR = 3, /* alias for GETPORT */
48 RPCBPROC_BCAST = 5, /* alias for CALLIT */
58 #define RPCB_HIGHPROC_2 RPCBPROC_CALLIT
59 #define RPCB_HIGHPROC_3 RPCBPROC_TADDR2UADDR
60 #define RPCB_HIGHPROC_4 RPCBPROC_GETSTAT
65 * The "owner" is allowed to unset a service in the rpcbind database.
67 * For AF_LOCAL SET/UNSET requests, rpcbind treats this string as a
68 * UID which it maps to a local user name via a password lookup.
69 * In all other cases it is ignored.
71 * For SET/UNSET requests, user space provides a value, even for
72 * network requests, and GETADDR uses an empty string. We follow
73 * those precedents here.
75 #define RPCB_OWNER_STRING "0"
76 #define RPCB_MAXOWNERLEN sizeof(RPCB_OWNER_STRING)
78 static void rpcb_getport_done(struct rpc_task *, void *);
79 static void rpcb_map_release(void *data);
80 static struct rpc_program rpcb_program;
83 struct rpc_xprt * r_xprt;
88 unsigned short r_port;
96 static struct rpc_procinfo rpcb_procedures2[];
97 static struct rpc_procinfo rpcb_procedures3[];
98 static struct rpc_procinfo rpcb_procedures4[];
102 struct rpc_procinfo * rpc_proc;
105 static struct rpcb_info rpcb_next_version[];
106 static struct rpcb_info rpcb_next_version6[];
108 static const struct rpc_call_ops rpcb_getport_ops = {
109 .rpc_call_done = rpcb_getport_done,
110 .rpc_release = rpcb_map_release,
113 static void rpcb_wake_rpcbind_waiters(struct rpc_xprt *xprt, int status)
115 xprt_clear_binding(xprt);
116 rpc_wake_up_status(&xprt->binding, status);
119 static void rpcb_map_release(void *data)
121 struct rpcbind_args *map = data;
123 rpcb_wake_rpcbind_waiters(map->r_xprt, map->r_status);
124 xprt_put(map->r_xprt);
128 static const struct sockaddr_in rpcb_inaddr_loopback = {
129 .sin_family = AF_INET,
130 .sin_addr.s_addr = htonl(INADDR_LOOPBACK),
131 .sin_port = htons(RPCBIND_PORT),
134 static struct rpc_clnt *rpcb_create_local(struct sockaddr *addr,
135 size_t addrlen, u32 version)
137 struct rpc_create_args args = {
138 .protocol = XPRT_TRANSPORT_UDP,
141 .servername = "localhost",
142 .program = &rpcb_program,
144 .authflavor = RPC_AUTH_UNIX,
145 .flags = RPC_CLNT_CREATE_NOPING,
148 return rpc_create(&args);
151 static struct rpc_clnt *rpcb_create(char *hostname, struct sockaddr *srvaddr,
152 size_t salen, int proto, u32 version)
154 struct rpc_create_args args = {
158 .servername = hostname,
159 .program = &rpcb_program,
161 .authflavor = RPC_AUTH_UNIX,
162 .flags = (RPC_CLNT_CREATE_NOPING |
163 RPC_CLNT_CREATE_NONPRIVPORT),
166 switch (srvaddr->sa_family) {
168 ((struct sockaddr_in *)srvaddr)->sin_port = htons(RPCBIND_PORT);
171 ((struct sockaddr_in6 *)srvaddr)->sin6_port = htons(RPCBIND_PORT);
177 return rpc_create(&args);
180 static int rpcb_register_call(const u32 version, struct rpc_message *msg)
182 struct sockaddr *addr = (struct sockaddr *)&rpcb_inaddr_loopback;
183 size_t addrlen = sizeof(rpcb_inaddr_loopback);
184 struct rpc_clnt *rpcb_clnt;
185 int result, error = 0;
187 msg->rpc_resp = &result;
189 rpcb_clnt = rpcb_create_local(addr, addrlen, version);
190 if (!IS_ERR(rpcb_clnt)) {
191 error = rpc_call_sync(rpcb_clnt, msg, 0);
192 rpc_shutdown_client(rpcb_clnt);
194 error = PTR_ERR(rpcb_clnt);
197 printk(KERN_WARNING "RPC: failed to contact local rpcbind "
198 "server (errno %d).\n", -error);
208 * rpcb_register - set or unset a port registration with the local rpcbind svc
209 * @prog: RPC program number to bind
210 * @vers: RPC version number to bind
211 * @prot: transport protocol to register
212 * @port: port value to register
214 * Returns zero if the registration request was dispatched successfully
215 * and the rpcbind daemon returned success. Otherwise, returns an errno
216 * value that reflects the nature of the error (request could not be
217 * dispatched, timed out, or rpcbind returned an error).
219 * RPC services invoke this function to advertise their contact
220 * information via the system's rpcbind daemon. RPC services
221 * invoke this function once for each [program, version, transport]
222 * tuple they wish to advertise.
224 * Callers may also unregister RPC services that are no longer
225 * available by setting the passed-in port to zero. This removes
226 * all registered transports for [program, version] from the local
229 * This function uses rpcbind protocol version 2 to contact the
230 * local rpcbind daemon.
232 * Registration works over both AF_INET and AF_INET6, and services
233 * registered via this function are advertised as available for any
234 * address. If the local rpcbind daemon is listening on AF_INET6,
235 * services registered via this function will be advertised on
236 * IN6ADDR_ANY (ie available for all AF_INET and AF_INET6
239 int rpcb_register(u32 prog, u32 vers, int prot, unsigned short port)
241 struct rpcbind_args map = {
247 struct rpc_message msg = {
251 dprintk("RPC: %sregistering (%u, %u, %d, %u) with local "
252 "rpcbind\n", (port ? "" : "un"),
253 prog, vers, prot, port);
255 msg.rpc_proc = &rpcb_procedures2[RPCBPROC_UNSET];
257 msg.rpc_proc = &rpcb_procedures2[RPCBPROC_SET];
259 return rpcb_register_call(RPCBVERS_2, &msg);
263 * Fill in AF_INET family-specific arguments to register
265 static int rpcb_register_netid4(const struct sockaddr *sap,
266 struct rpc_message *msg)
268 const struct sockaddr_in *sin = (const struct sockaddr_in *)sap;
269 struct rpcbind_args *map = msg->rpc_argp;
270 unsigned short port = ntohs(sin->sin_port);
273 /* Construct AF_INET universal address */
274 snprintf(buf, sizeof(buf), "%pI4.%u.%u",
275 &sin->sin_addr.s_addr, port >> 8, port & 0xff);
278 dprintk("RPC: %sregistering [%u, %u, %s, '%s'] with "
279 "local rpcbind\n", (port ? "" : "un"),
280 map->r_prog, map->r_vers,
281 map->r_addr, map->r_netid);
283 msg->rpc_proc = &rpcb_procedures4[RPCBPROC_UNSET];
285 msg->rpc_proc = &rpcb_procedures4[RPCBPROC_SET];
287 return rpcb_register_call(RPCBVERS_4, msg);
291 * Fill in AF_INET6 family-specific arguments to register
293 static int rpcb_register_netid6(const struct sockaddr *sap,
294 struct rpc_message *msg)
296 const struct sockaddr_in6 *sin6 = (const struct sockaddr_in6 *)sap;
297 struct rpcbind_args *map = msg->rpc_argp;
298 unsigned short port = ntohs(sin6->sin6_port);
301 /* Construct AF_INET6 universal address */
302 if (ipv6_addr_any(&sin6->sin6_addr))
303 snprintf(buf, sizeof(buf), "::.%u.%u",
304 port >> 8, port & 0xff);
306 snprintf(buf, sizeof(buf), "%pI6.%u.%u",
307 &sin6->sin6_addr, port >> 8, port & 0xff);
310 dprintk("RPC: %sregistering [%u, %u, %s, '%s'] with "
311 "local rpcbind\n", (port ? "" : "un"),
312 map->r_prog, map->r_vers,
313 map->r_addr, map->r_netid);
315 msg->rpc_proc = &rpcb_procedures4[RPCBPROC_UNSET];
317 msg->rpc_proc = &rpcb_procedures4[RPCBPROC_SET];
319 return rpcb_register_call(RPCBVERS_4, msg);
323 * rpcb_v4_register - set or unset a port registration with the local rpcbind
324 * @program: RPC program number of service to (un)register
325 * @version: RPC version number of service to (un)register
326 * @address: address family, IP address, and port to (un)register
327 * @netid: netid of transport protocol to (un)register
329 * Returns zero if the registration request was dispatched successfully
330 * and the rpcbind daemon returned success. Otherwise, returns an errno
331 * value that reflects the nature of the error (request could not be
332 * dispatched, timed out, or rpcbind returned an error).
334 * RPC services invoke this function to advertise their contact
335 * information via the system's rpcbind daemon. RPC services
336 * invoke this function once for each [program, version, address,
337 * netid] tuple they wish to advertise.
339 * Callers may also unregister RPC services that are no longer
340 * available by setting the port number in the passed-in address
341 * to zero. Callers pass a netid of "" to unregister all
342 * transport netids associated with [program, version, address].
344 * This function uses rpcbind protocol version 4 to contact the
345 * local rpcbind daemon. The local rpcbind daemon must support
346 * version 4 of the rpcbind protocol in order for these functions
347 * to register a service successfully.
349 * Supported netids include "udp" and "tcp" for UDP and TCP over
350 * IPv4, and "udp6" and "tcp6" for UDP and TCP over IPv6,
353 * The contents of @address determine the address family and the
354 * port to be registered. The usual practice is to pass INADDR_ANY
355 * as the raw address, but specifying a non-zero address is also
356 * supported by this API if the caller wishes to advertise an RPC
357 * service on a specific network interface.
359 * Note that passing in INADDR_ANY does not create the same service
360 * registration as IN6ADDR_ANY. The former advertises an RPC
361 * service on any IPv4 address, but not on IPv6. The latter
362 * advertises the service on all IPv4 and IPv6 addresses.
364 int rpcb_v4_register(const u32 program, const u32 version,
365 const struct sockaddr *address, const char *netid)
367 struct rpcbind_args map = {
371 .r_owner = RPCB_OWNER_STRING,
373 struct rpc_message msg = {
377 switch (address->sa_family) {
379 return rpcb_register_netid4(address, &msg);
381 return rpcb_register_netid6(address, &msg);
384 return -EAFNOSUPPORT;
388 * rpcb_getport_sync - obtain the port for an RPC service on a given host
389 * @sin: address of remote peer
390 * @prog: RPC program number to bind
391 * @vers: RPC version number to bind
392 * @prot: transport protocol to use to make this request
394 * Return value is the requested advertised port number,
395 * or a negative errno value.
397 * Called from outside the RPC client in a synchronous task context.
398 * Uses default timeout parameters specified by underlying transport.
400 * XXX: Needs to support IPv6
402 int rpcb_getport_sync(struct sockaddr_in *sin, u32 prog, u32 vers, int prot)
404 struct rpcbind_args map = {
410 struct rpc_message msg = {
411 .rpc_proc = &rpcb_procedures2[RPCBPROC_GETPORT],
413 .rpc_resp = &map.r_port,
415 struct rpc_clnt *rpcb_clnt;
418 dprintk("RPC: %s(%pI4, %u, %u, %d)\n",
419 __func__, &sin->sin_addr.s_addr, prog, vers, prot);
421 rpcb_clnt = rpcb_create(NULL, (struct sockaddr *)sin,
422 sizeof(*sin), prot, RPCBVERS_2);
423 if (IS_ERR(rpcb_clnt))
424 return PTR_ERR(rpcb_clnt);
426 status = rpc_call_sync(rpcb_clnt, &msg, 0);
427 rpc_shutdown_client(rpcb_clnt);
436 EXPORT_SYMBOL_GPL(rpcb_getport_sync);
438 static struct rpc_task *rpcb_call_async(struct rpc_clnt *rpcb_clnt, struct rpcbind_args *map, struct rpc_procinfo *proc)
440 struct rpc_message msg = {
443 .rpc_resp = &map->r_port,
445 struct rpc_task_setup task_setup_data = {
446 .rpc_client = rpcb_clnt,
448 .callback_ops = &rpcb_getport_ops,
449 .callback_data = map,
450 .flags = RPC_TASK_ASYNC,
453 return rpc_run_task(&task_setup_data);
457 * In the case where rpc clients have been cloned, we want to make
458 * sure that we use the program number/version etc of the actual
459 * owner of the xprt. To do so, we walk back up the tree of parents
460 * to find whoever created the transport and/or whoever has the
463 static struct rpc_clnt *rpcb_find_transport_owner(struct rpc_clnt *clnt)
465 struct rpc_clnt *parent = clnt->cl_parent;
467 while (parent != clnt) {
468 if (parent->cl_xprt != clnt->cl_xprt)
470 if (clnt->cl_autobind)
473 parent = parent->cl_parent;
479 * rpcb_getport_async - obtain the port for a given RPC service on a given host
480 * @task: task that is waiting for portmapper request
482 * This one can be called for an ongoing RPC request, and can be used in
483 * an async (rpciod) context.
485 void rpcb_getport_async(struct rpc_task *task)
487 struct rpc_clnt *clnt;
488 struct rpc_procinfo *proc;
490 struct rpc_xprt *xprt;
491 struct rpc_clnt *rpcb_clnt;
492 static struct rpcbind_args *map;
493 struct rpc_task *child;
494 struct sockaddr_storage addr;
495 struct sockaddr *sap = (struct sockaddr *)&addr;
499 clnt = rpcb_find_transport_owner(task->tk_client);
500 xprt = clnt->cl_xprt;
502 dprintk("RPC: %5u %s(%s, %u, %u, %d)\n",
503 task->tk_pid, __func__,
504 clnt->cl_server, clnt->cl_prog, clnt->cl_vers, xprt->prot);
506 /* Put self on the wait queue to ensure we get notified if
507 * some other task is already attempting to bind the port */
508 rpc_sleep_on(&xprt->binding, task, NULL);
510 if (xprt_test_and_set_binding(xprt)) {
511 dprintk("RPC: %5u %s: waiting for another binder\n",
512 task->tk_pid, __func__);
516 /* Someone else may have bound if we slept */
517 if (xprt_bound(xprt)) {
519 dprintk("RPC: %5u %s: already bound\n",
520 task->tk_pid, __func__);
524 salen = rpc_peeraddr(clnt, sap, sizeof(addr));
526 /* Don't ever use rpcbind v2 for AF_INET6 requests */
527 switch (sap->sa_family) {
529 proc = rpcb_next_version[xprt->bind_index].rpc_proc;
530 bind_version = rpcb_next_version[xprt->bind_index].rpc_vers;
533 proc = rpcb_next_version6[xprt->bind_index].rpc_proc;
534 bind_version = rpcb_next_version6[xprt->bind_index].rpc_vers;
537 status = -EAFNOSUPPORT;
538 dprintk("RPC: %5u %s: bad address family\n",
539 task->tk_pid, __func__);
543 xprt->bind_index = 0;
544 status = -EPFNOSUPPORT;
545 dprintk("RPC: %5u %s: no more getport versions available\n",
546 task->tk_pid, __func__);
550 dprintk("RPC: %5u %s: trying rpcbind version %u\n",
551 task->tk_pid, __func__, bind_version);
553 rpcb_clnt = rpcb_create(clnt->cl_server, sap, salen, xprt->prot,
555 if (IS_ERR(rpcb_clnt)) {
556 status = PTR_ERR(rpcb_clnt);
557 dprintk("RPC: %5u %s: rpcb_create failed, error %ld\n",
558 task->tk_pid, __func__, PTR_ERR(rpcb_clnt));
562 map = kzalloc(sizeof(struct rpcbind_args), GFP_ATOMIC);
565 dprintk("RPC: %5u %s: no memory available\n",
566 task->tk_pid, __func__);
567 goto bailout_release_client;
569 map->r_prog = clnt->cl_prog;
570 map->r_vers = clnt->cl_vers;
571 map->r_prot = xprt->prot;
573 map->r_xprt = xprt_get(xprt);
574 map->r_netid = rpc_peeraddr2str(clnt, RPC_DISPLAY_NETID);
575 map->r_addr = rpc_peeraddr2str(rpcb_clnt, RPC_DISPLAY_UNIVERSAL_ADDR);
577 map->r_status = -EIO;
579 child = rpcb_call_async(rpcb_clnt, map, proc);
580 rpc_release_client(rpcb_clnt);
582 /* rpcb_map_release() has freed the arguments */
583 dprintk("RPC: %5u %s: rpc_run_task failed\n",
584 task->tk_pid, __func__);
588 xprt->stat.bind_count++;
592 bailout_release_client:
593 rpc_release_client(rpcb_clnt);
595 rpcb_wake_rpcbind_waiters(xprt, status);
596 task->tk_status = status;
598 EXPORT_SYMBOL_GPL(rpcb_getport_async);
601 * Rpcbind child task calls this callback via tk_exit.
603 static void rpcb_getport_done(struct rpc_task *child, void *data)
605 struct rpcbind_args *map = data;
606 struct rpc_xprt *xprt = map->r_xprt;
607 int status = child->tk_status;
609 /* Garbage reply: retry with a lesser rpcbind version */
611 status = -EPROTONOSUPPORT;
613 /* rpcbind server doesn't support this rpcbind protocol version */
614 if (status == -EPROTONOSUPPORT)
618 /* rpcbind server not available on remote host? */
619 xprt->ops->set_port(xprt, 0);
620 } else if (map->r_port == 0) {
621 /* Requested RPC service wasn't registered on remote host */
622 xprt->ops->set_port(xprt, 0);
626 xprt->ops->set_port(xprt, map->r_port);
627 xprt_set_bound(xprt);
631 dprintk("RPC: %5u rpcb_getport_done(status %d, port %u)\n",
632 child->tk_pid, status, map->r_port);
634 map->r_status = status;
638 * XDR functions for rpcbind
641 static int rpcb_encode_mapping(struct rpc_rqst *req, __be32 *p,
642 struct rpcbind_args *rpcb)
644 dprintk("RPC: encoding rpcb request (%u, %u, %d, %u)\n",
645 rpcb->r_prog, rpcb->r_vers, rpcb->r_prot, rpcb->r_port);
646 *p++ = htonl(rpcb->r_prog);
647 *p++ = htonl(rpcb->r_vers);
648 *p++ = htonl(rpcb->r_prot);
649 *p++ = htonl(rpcb->r_port);
651 req->rq_slen = xdr_adjust_iovec(req->rq_svec, p);
655 static int rpcb_decode_getport(struct rpc_rqst *req, __be32 *p,
656 unsigned short *portp)
658 *portp = (unsigned short) ntohl(*p++);
659 dprintk("RPC: rpcb getport result: %u\n",
664 static int rpcb_decode_set(struct rpc_rqst *req, __be32 *p,
667 *boolp = (unsigned int) ntohl(*p++);
668 dprintk("RPC: rpcb set/unset call %s\n",
669 (*boolp ? "succeeded" : "failed"));
673 static int rpcb_encode_getaddr(struct rpc_rqst *req, __be32 *p,
674 struct rpcbind_args *rpcb)
676 dprintk("RPC: encoding rpcb request (%u, %u, %s)\n",
677 rpcb->r_prog, rpcb->r_vers, rpcb->r_addr);
678 *p++ = htonl(rpcb->r_prog);
679 *p++ = htonl(rpcb->r_vers);
681 p = xdr_encode_string(p, rpcb->r_netid);
682 p = xdr_encode_string(p, rpcb->r_addr);
683 p = xdr_encode_string(p, rpcb->r_owner);
685 req->rq_slen = xdr_adjust_iovec(req->rq_svec, p);
690 static int rpcb_decode_getaddr(struct rpc_rqst *req, __be32 *p,
691 unsigned short *portp)
695 int c, i, f, first, val;
698 addr_len = ntohl(*p++);
701 dprintk("RPC: rpcb_decode_getaddr: "
702 "service is not registered\n");
707 * Simple sanity check.
709 if (addr_len > RPCBIND_MAXUADDRLEN)
713 * Start at the end and walk backwards until the first dot
714 * is encountered. When the second dot is found, we have
715 * both parts of the port number.
721 for (i = addr_len - 1; i > 0; i--) {
723 if (c >= '0' && c <= '9') {
724 val += (c - '0') * f;
726 } else if (c == '.') {
732 *portp |= (val << 8);
739 * Simple sanity check. If we never saw a dot in the reply,
740 * then this was probably just garbage.
745 dprintk("RPC: rpcb_decode_getaddr port=%u\n", *portp);
749 dprintk("RPC: rpcbind server returned malformed reply\n");
753 #define RPCB_program_sz (1u)
754 #define RPCB_version_sz (1u)
755 #define RPCB_protocol_sz (1u)
756 #define RPCB_port_sz (1u)
757 #define RPCB_boolean_sz (1u)
759 #define RPCB_netid_sz (1+XDR_QUADLEN(RPCBIND_MAXNETIDLEN))
760 #define RPCB_addr_sz (1+XDR_QUADLEN(RPCBIND_MAXUADDRLEN))
761 #define RPCB_ownerstring_sz (1+XDR_QUADLEN(RPCB_MAXOWNERLEN))
763 #define RPCB_mappingargs_sz RPCB_program_sz+RPCB_version_sz+ \
764 RPCB_protocol_sz+RPCB_port_sz
765 #define RPCB_getaddrargs_sz RPCB_program_sz+RPCB_version_sz+ \
766 RPCB_netid_sz+RPCB_addr_sz+ \
769 #define RPCB_setres_sz RPCB_boolean_sz
770 #define RPCB_getportres_sz RPCB_port_sz
773 * Note that RFC 1833 does not put any size restrictions on the
774 * address string returned by the remote rpcbind database.
776 #define RPCB_getaddrres_sz RPCB_addr_sz
778 #define PROC(proc, argtype, restype) \
779 [RPCBPROC_##proc] = { \
780 .p_proc = RPCBPROC_##proc, \
781 .p_encode = (kxdrproc_t) rpcb_encode_##argtype, \
782 .p_decode = (kxdrproc_t) rpcb_decode_##restype, \
783 .p_arglen = RPCB_##argtype##args_sz, \
784 .p_replen = RPCB_##restype##res_sz, \
785 .p_statidx = RPCBPROC_##proc, \
791 * Not all rpcbind procedures described in RFC 1833 are implemented
792 * since the Linux kernel RPC code requires only these.
794 static struct rpc_procinfo rpcb_procedures2[] = {
795 PROC(SET, mapping, set),
796 PROC(UNSET, mapping, set),
797 PROC(GETPORT, mapping, getport),
800 static struct rpc_procinfo rpcb_procedures3[] = {
801 PROC(SET, getaddr, set),
802 PROC(UNSET, getaddr, set),
803 PROC(GETADDR, getaddr, getaddr),
806 static struct rpc_procinfo rpcb_procedures4[] = {
807 PROC(SET, getaddr, set),
808 PROC(UNSET, getaddr, set),
809 PROC(GETADDR, getaddr, getaddr),
810 PROC(GETVERSADDR, getaddr, getaddr),
813 static struct rpcb_info rpcb_next_version[] = {
815 .rpc_vers = RPCBVERS_2,
816 .rpc_proc = &rpcb_procedures2[RPCBPROC_GETPORT],
823 static struct rpcb_info rpcb_next_version6[] = {
825 .rpc_vers = RPCBVERS_4,
826 .rpc_proc = &rpcb_procedures4[RPCBPROC_GETADDR],
829 .rpc_vers = RPCBVERS_3,
830 .rpc_proc = &rpcb_procedures3[RPCBPROC_GETADDR],
837 static struct rpc_version rpcb_version2 = {
838 .number = RPCBVERS_2,
839 .nrprocs = RPCB_HIGHPROC_2,
840 .procs = rpcb_procedures2
843 static struct rpc_version rpcb_version3 = {
844 .number = RPCBVERS_3,
845 .nrprocs = RPCB_HIGHPROC_3,
846 .procs = rpcb_procedures3
849 static struct rpc_version rpcb_version4 = {
850 .number = RPCBVERS_4,
851 .nrprocs = RPCB_HIGHPROC_4,
852 .procs = rpcb_procedures4
855 static struct rpc_version *rpcb_version[] = {
863 static struct rpc_stat rpcb_stats;
865 static struct rpc_program rpcb_program = {
867 .number = RPCBIND_PROGRAM,
868 .nrvers = ARRAY_SIZE(rpcb_version),
869 .version = rpcb_version,
870 .stats = &rpcb_stats,