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)
81 #define RPCB_program_sz (1)
82 #define RPCB_version_sz (1)
83 #define RPCB_protocol_sz (1)
84 #define RPCB_port_sz (1)
85 #define RPCB_boolean_sz (1)
87 #define RPCB_netid_sz (1 + XDR_QUADLEN(RPCBIND_MAXNETIDLEN))
88 #define RPCB_addr_sz (1 + XDR_QUADLEN(RPCBIND_MAXUADDRLEN))
89 #define RPCB_ownerstring_sz (1 + XDR_QUADLEN(RPCB_MAXOWNERLEN))
92 * XDR argument and result sizes
94 #define RPCB_mappingargs_sz (RPCB_program_sz + RPCB_version_sz + \
95 RPCB_protocol_sz + RPCB_port_sz)
96 #define RPCB_getaddrargs_sz (RPCB_program_sz + RPCB_version_sz + \
97 RPCB_netid_sz + RPCB_addr_sz + \
100 #define RPCB_getportres_sz RPCB_port_sz
101 #define RPCB_setres_sz RPCB_boolean_sz
104 * Note that RFC 1833 does not put any size restrictions on the
105 * address string returned by the remote rpcbind database.
107 #define RPCB_getaddrres_sz RPCB_addr_sz
109 static void rpcb_getport_done(struct rpc_task *, void *);
110 static void rpcb_map_release(void *data);
111 static struct rpc_program rpcb_program;
113 struct rpcbind_args {
114 struct rpc_xprt * r_xprt;
119 unsigned short r_port;
120 const char * r_netid;
122 const char * r_owner;
127 static struct rpc_procinfo rpcb_procedures2[];
128 static struct rpc_procinfo rpcb_procedures3[];
129 static struct rpc_procinfo rpcb_procedures4[];
133 struct rpc_procinfo * rpc_proc;
136 static struct rpcb_info rpcb_next_version[];
137 static struct rpcb_info rpcb_next_version6[];
139 static const struct rpc_call_ops rpcb_getport_ops = {
140 .rpc_call_done = rpcb_getport_done,
141 .rpc_release = rpcb_map_release,
144 static void rpcb_wake_rpcbind_waiters(struct rpc_xprt *xprt, int status)
146 xprt_clear_binding(xprt);
147 rpc_wake_up_status(&xprt->binding, status);
150 static void rpcb_map_release(void *data)
152 struct rpcbind_args *map = data;
154 rpcb_wake_rpcbind_waiters(map->r_xprt, map->r_status);
155 xprt_put(map->r_xprt);
160 static const struct sockaddr_in rpcb_inaddr_loopback = {
161 .sin_family = AF_INET,
162 .sin_addr.s_addr = htonl(INADDR_LOOPBACK),
163 .sin_port = htons(RPCBIND_PORT),
166 static struct rpc_clnt *rpcb_create_local(u32 version)
168 struct rpc_create_args args = {
169 .protocol = XPRT_TRANSPORT_UDP,
170 .address = (struct sockaddr *)&rpcb_inaddr_loopback,
171 .addrsize = sizeof(rpcb_inaddr_loopback),
172 .servername = "localhost",
173 .program = &rpcb_program,
175 .authflavor = RPC_AUTH_UNIX,
176 .flags = RPC_CLNT_CREATE_NOPING,
179 return rpc_create(&args);
182 static struct rpc_clnt *rpcb_create(char *hostname, struct sockaddr *srvaddr,
183 size_t salen, int proto, u32 version)
185 struct rpc_create_args args = {
189 .servername = hostname,
190 .program = &rpcb_program,
192 .authflavor = RPC_AUTH_UNIX,
193 .flags = (RPC_CLNT_CREATE_NOPING |
194 RPC_CLNT_CREATE_NONPRIVPORT),
197 switch (srvaddr->sa_family) {
199 ((struct sockaddr_in *)srvaddr)->sin_port = htons(RPCBIND_PORT);
202 ((struct sockaddr_in6 *)srvaddr)->sin6_port = htons(RPCBIND_PORT);
208 return rpc_create(&args);
211 static int rpcb_register_call(const u32 version, struct rpc_message *msg)
213 struct rpc_clnt *rpcb_clnt;
214 int result, error = 0;
216 msg->rpc_resp = &result;
218 rpcb_clnt = rpcb_create_local(version);
219 if (!IS_ERR(rpcb_clnt)) {
220 error = rpc_call_sync(rpcb_clnt, msg, 0);
221 rpc_shutdown_client(rpcb_clnt);
223 error = PTR_ERR(rpcb_clnt);
226 dprintk("RPC: failed to contact local rpcbind "
227 "server (errno %d).\n", -error);
237 * rpcb_register - set or unset a port registration with the local rpcbind svc
238 * @prog: RPC program number to bind
239 * @vers: RPC version number to bind
240 * @prot: transport protocol to register
241 * @port: port value to register
243 * Returns zero if the registration request was dispatched successfully
244 * and the rpcbind daemon returned success. Otherwise, returns an errno
245 * value that reflects the nature of the error (request could not be
246 * dispatched, timed out, or rpcbind returned an error).
248 * RPC services invoke this function to advertise their contact
249 * information via the system's rpcbind daemon. RPC services
250 * invoke this function once for each [program, version, transport]
251 * tuple they wish to advertise.
253 * Callers may also unregister RPC services that are no longer
254 * available by setting the passed-in port to zero. This removes
255 * all registered transports for [program, version] from the local
258 * This function uses rpcbind protocol version 2 to contact the
259 * local rpcbind daemon.
261 * Registration works over both AF_INET and AF_INET6, and services
262 * registered via this function are advertised as available for any
263 * address. If the local rpcbind daemon is listening on AF_INET6,
264 * services registered via this function will be advertised on
265 * IN6ADDR_ANY (ie available for all AF_INET and AF_INET6
268 int rpcb_register(u32 prog, u32 vers, int prot, unsigned short port)
270 struct rpcbind_args map = {
276 struct rpc_message msg = {
280 dprintk("RPC: %sregistering (%u, %u, %d, %u) with local "
281 "rpcbind\n", (port ? "" : "un"),
282 prog, vers, prot, port);
284 msg.rpc_proc = &rpcb_procedures2[RPCBPROC_UNSET];
286 msg.rpc_proc = &rpcb_procedures2[RPCBPROC_SET];
288 return rpcb_register_call(RPCBVERS_2, &msg);
292 * Fill in AF_INET family-specific arguments to register
294 static int rpcb_register_inet4(const struct sockaddr *sap,
295 struct rpc_message *msg)
297 const struct sockaddr_in *sin = (const struct sockaddr_in *)sap;
298 struct rpcbind_args *map = msg->rpc_argp;
299 unsigned short port = ntohs(sin->sin_port);
302 map->r_addr = rpc_sockaddr2uaddr(sap);
304 dprintk("RPC: %sregistering [%u, %u, %s, '%s'] with "
305 "local rpcbind\n", (port ? "" : "un"),
306 map->r_prog, map->r_vers,
307 map->r_addr, map->r_netid);
309 msg->rpc_proc = &rpcb_procedures4[RPCBPROC_UNSET];
311 msg->rpc_proc = &rpcb_procedures4[RPCBPROC_SET];
313 result = rpcb_register_call(RPCBVERS_4, msg);
319 * Fill in AF_INET6 family-specific arguments to register
321 static int rpcb_register_inet6(const struct sockaddr *sap,
322 struct rpc_message *msg)
324 const struct sockaddr_in6 *sin6 = (const struct sockaddr_in6 *)sap;
325 struct rpcbind_args *map = msg->rpc_argp;
326 unsigned short port = ntohs(sin6->sin6_port);
329 map->r_addr = rpc_sockaddr2uaddr(sap);
331 dprintk("RPC: %sregistering [%u, %u, %s, '%s'] with "
332 "local rpcbind\n", (port ? "" : "un"),
333 map->r_prog, map->r_vers,
334 map->r_addr, map->r_netid);
336 msg->rpc_proc = &rpcb_procedures4[RPCBPROC_UNSET];
338 msg->rpc_proc = &rpcb_procedures4[RPCBPROC_SET];
340 result = rpcb_register_call(RPCBVERS_4, msg);
345 static int rpcb_unregister_all_protofamilies(struct rpc_message *msg)
347 struct rpcbind_args *map = msg->rpc_argp;
349 dprintk("RPC: unregistering [%u, %u, '%s'] with "
351 map->r_prog, map->r_vers, map->r_netid);
354 msg->rpc_proc = &rpcb_procedures4[RPCBPROC_UNSET];
356 return rpcb_register_call(RPCBVERS_4, msg);
360 * rpcb_v4_register - set or unset a port registration with the local rpcbind
361 * @program: RPC program number of service to (un)register
362 * @version: RPC version number of service to (un)register
363 * @address: address family, IP address, and port to (un)register
364 * @netid: netid of transport protocol to (un)register
366 * Returns zero if the registration request was dispatched successfully
367 * and the rpcbind daemon returned success. Otherwise, returns an errno
368 * value that reflects the nature of the error (request could not be
369 * dispatched, timed out, or rpcbind returned an error).
371 * RPC services invoke this function to advertise their contact
372 * information via the system's rpcbind daemon. RPC services
373 * invoke this function once for each [program, version, address,
374 * netid] tuple they wish to advertise.
376 * Callers may also unregister RPC services that are registered at a
377 * specific address by setting the port number in @address to zero.
378 * They may unregister all registered protocol families at once for
379 * a service by passing a NULL @address argument. If @netid is ""
380 * then all netids for [program, version, address] are unregistered.
382 * This function uses rpcbind protocol version 4 to contact the
383 * local rpcbind daemon. The local rpcbind daemon must support
384 * version 4 of the rpcbind protocol in order for these functions
385 * to register a service successfully.
387 * Supported netids include "udp" and "tcp" for UDP and TCP over
388 * IPv4, and "udp6" and "tcp6" for UDP and TCP over IPv6,
391 * The contents of @address determine the address family and the
392 * port to be registered. The usual practice is to pass INADDR_ANY
393 * as the raw address, but specifying a non-zero address is also
394 * supported by this API if the caller wishes to advertise an RPC
395 * service on a specific network interface.
397 * Note that passing in INADDR_ANY does not create the same service
398 * registration as IN6ADDR_ANY. The former advertises an RPC
399 * service on any IPv4 address, but not on IPv6. The latter
400 * advertises the service on all IPv4 and IPv6 addresses.
402 int rpcb_v4_register(const u32 program, const u32 version,
403 const struct sockaddr *address, const char *netid)
405 struct rpcbind_args map = {
409 .r_owner = RPCB_OWNER_STRING,
411 struct rpc_message msg = {
416 return rpcb_unregister_all_protofamilies(&msg);
418 switch (address->sa_family) {
420 return rpcb_register_inet4(address, &msg);
422 return rpcb_register_inet6(address, &msg);
425 return -EAFNOSUPPORT;
429 * rpcb_getport_sync - obtain the port for an RPC service on a given host
430 * @sin: address of remote peer
431 * @prog: RPC program number to bind
432 * @vers: RPC version number to bind
433 * @prot: transport protocol to use to make this request
435 * Return value is the requested advertised port number,
436 * or a negative errno value.
438 * Called from outside the RPC client in a synchronous task context.
439 * Uses default timeout parameters specified by underlying transport.
441 * XXX: Needs to support IPv6
443 int rpcb_getport_sync(struct sockaddr_in *sin, u32 prog, u32 vers, int prot)
445 struct rpcbind_args map = {
451 struct rpc_message msg = {
452 .rpc_proc = &rpcb_procedures2[RPCBPROC_GETPORT],
456 struct rpc_clnt *rpcb_clnt;
459 dprintk("RPC: %s(%pI4, %u, %u, %d)\n",
460 __func__, &sin->sin_addr.s_addr, prog, vers, prot);
462 rpcb_clnt = rpcb_create(NULL, (struct sockaddr *)sin,
463 sizeof(*sin), prot, RPCBVERS_2);
464 if (IS_ERR(rpcb_clnt))
465 return PTR_ERR(rpcb_clnt);
467 status = rpc_call_sync(rpcb_clnt, &msg, 0);
468 rpc_shutdown_client(rpcb_clnt);
477 EXPORT_SYMBOL_GPL(rpcb_getport_sync);
479 static struct rpc_task *rpcb_call_async(struct rpc_clnt *rpcb_clnt, struct rpcbind_args *map, struct rpc_procinfo *proc)
481 struct rpc_message msg = {
486 struct rpc_task_setup task_setup_data = {
487 .rpc_client = rpcb_clnt,
489 .callback_ops = &rpcb_getport_ops,
490 .callback_data = map,
491 .flags = RPC_TASK_ASYNC,
494 return rpc_run_task(&task_setup_data);
498 * In the case where rpc clients have been cloned, we want to make
499 * sure that we use the program number/version etc of the actual
500 * owner of the xprt. To do so, we walk back up the tree of parents
501 * to find whoever created the transport and/or whoever has the
504 static struct rpc_clnt *rpcb_find_transport_owner(struct rpc_clnt *clnt)
506 struct rpc_clnt *parent = clnt->cl_parent;
508 while (parent != clnt) {
509 if (parent->cl_xprt != clnt->cl_xprt)
511 if (clnt->cl_autobind)
514 parent = parent->cl_parent;
520 * rpcb_getport_async - obtain the port for a given RPC service on a given host
521 * @task: task that is waiting for portmapper request
523 * This one can be called for an ongoing RPC request, and can be used in
524 * an async (rpciod) context.
526 void rpcb_getport_async(struct rpc_task *task)
528 struct rpc_clnt *clnt;
529 struct rpc_procinfo *proc;
531 struct rpc_xprt *xprt;
532 struct rpc_clnt *rpcb_clnt;
533 static struct rpcbind_args *map;
534 struct rpc_task *child;
535 struct sockaddr_storage addr;
536 struct sockaddr *sap = (struct sockaddr *)&addr;
540 clnt = rpcb_find_transport_owner(task->tk_client);
541 xprt = clnt->cl_xprt;
543 dprintk("RPC: %5u %s(%s, %u, %u, %d)\n",
544 task->tk_pid, __func__,
545 clnt->cl_server, clnt->cl_prog, clnt->cl_vers, xprt->prot);
547 /* Put self on the wait queue to ensure we get notified if
548 * some other task is already attempting to bind the port */
549 rpc_sleep_on(&xprt->binding, task, NULL);
551 if (xprt_test_and_set_binding(xprt)) {
552 dprintk("RPC: %5u %s: waiting for another binder\n",
553 task->tk_pid, __func__);
557 /* Someone else may have bound if we slept */
558 if (xprt_bound(xprt)) {
560 dprintk("RPC: %5u %s: already bound\n",
561 task->tk_pid, __func__);
565 /* Parent transport's destination address */
566 salen = rpc_peeraddr(clnt, sap, sizeof(addr));
568 /* Don't ever use rpcbind v2 for AF_INET6 requests */
569 switch (sap->sa_family) {
571 proc = rpcb_next_version[xprt->bind_index].rpc_proc;
572 bind_version = rpcb_next_version[xprt->bind_index].rpc_vers;
575 proc = rpcb_next_version6[xprt->bind_index].rpc_proc;
576 bind_version = rpcb_next_version6[xprt->bind_index].rpc_vers;
579 status = -EAFNOSUPPORT;
580 dprintk("RPC: %5u %s: bad address family\n",
581 task->tk_pid, __func__);
585 xprt->bind_index = 0;
586 status = -EPFNOSUPPORT;
587 dprintk("RPC: %5u %s: no more getport versions available\n",
588 task->tk_pid, __func__);
592 dprintk("RPC: %5u %s: trying rpcbind version %u\n",
593 task->tk_pid, __func__, bind_version);
595 rpcb_clnt = rpcb_create(clnt->cl_server, sap, salen, xprt->prot,
597 if (IS_ERR(rpcb_clnt)) {
598 status = PTR_ERR(rpcb_clnt);
599 dprintk("RPC: %5u %s: rpcb_create failed, error %ld\n",
600 task->tk_pid, __func__, PTR_ERR(rpcb_clnt));
604 map = kzalloc(sizeof(struct rpcbind_args), GFP_ATOMIC);
607 dprintk("RPC: %5u %s: no memory available\n",
608 task->tk_pid, __func__);
609 goto bailout_release_client;
611 map->r_prog = clnt->cl_prog;
612 map->r_vers = clnt->cl_vers;
613 map->r_prot = xprt->prot;
615 map->r_xprt = xprt_get(xprt);
616 map->r_status = -EIO;
618 switch (bind_version) {
621 map->r_netid = rpc_peeraddr2str(clnt, RPC_DISPLAY_NETID);
622 map->r_addr = rpc_sockaddr2uaddr(sap);
632 child = rpcb_call_async(rpcb_clnt, map, proc);
633 rpc_release_client(rpcb_clnt);
635 /* rpcb_map_release() has freed the arguments */
636 dprintk("RPC: %5u %s: rpc_run_task failed\n",
637 task->tk_pid, __func__);
641 xprt->stat.bind_count++;
645 bailout_release_client:
646 rpc_release_client(rpcb_clnt);
648 rpcb_wake_rpcbind_waiters(xprt, status);
649 task->tk_status = status;
651 EXPORT_SYMBOL_GPL(rpcb_getport_async);
654 * Rpcbind child task calls this callback via tk_exit.
656 static void rpcb_getport_done(struct rpc_task *child, void *data)
658 struct rpcbind_args *map = data;
659 struct rpc_xprt *xprt = map->r_xprt;
660 int status = child->tk_status;
662 /* Garbage reply: retry with a lesser rpcbind version */
664 status = -EPROTONOSUPPORT;
666 /* rpcbind server doesn't support this rpcbind protocol version */
667 if (status == -EPROTONOSUPPORT)
671 /* rpcbind server not available on remote host? */
672 xprt->ops->set_port(xprt, 0);
673 } else if (map->r_port == 0) {
674 /* Requested RPC service wasn't registered on remote host */
675 xprt->ops->set_port(xprt, 0);
679 xprt->ops->set_port(xprt, map->r_port);
680 xprt_set_bound(xprt);
684 dprintk("RPC: %5u rpcb_getport_done(status %d, port %u)\n",
685 child->tk_pid, status, map->r_port);
687 map->r_status = status;
691 * XDR functions for rpcbind
694 static int rpcb_enc_mapping(struct rpc_rqst *req, __be32 *p,
695 const struct rpcbind_args *rpcb)
697 struct rpc_task *task = req->rq_task;
698 struct xdr_stream xdr;
700 dprintk("RPC: %5u encoding PMAP_%s call (%u, %u, %d, %u)\n",
701 task->tk_pid, task->tk_msg.rpc_proc->p_name,
702 rpcb->r_prog, rpcb->r_vers, rpcb->r_prot, rpcb->r_port);
704 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
706 p = xdr_reserve_space(&xdr, sizeof(__be32) * RPCB_mappingargs_sz);
707 if (unlikely(p == NULL))
710 *p++ = htonl(rpcb->r_prog);
711 *p++ = htonl(rpcb->r_vers);
712 *p++ = htonl(rpcb->r_prot);
713 *p = htonl(rpcb->r_port);
718 static int rpcb_dec_getport(struct rpc_rqst *req, __be32 *p,
719 struct rpcbind_args *rpcb)
721 struct rpc_task *task = req->rq_task;
722 struct xdr_stream xdr;
725 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
729 p = xdr_inline_decode(&xdr, sizeof(__be32));
730 if (unlikely(p == NULL))
734 dprintk("RPC: %5u PMAP_%s result: %lu\n", task->tk_pid,
735 task->tk_msg.rpc_proc->p_name, port);
736 if (unlikely(port > USHORT_MAX))
743 static int rpcb_dec_set(struct rpc_rqst *req, __be32 *p,
746 struct rpc_task *task = req->rq_task;
747 struct xdr_stream xdr;
749 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
751 p = xdr_inline_decode(&xdr, sizeof(__be32));
752 if (unlikely(p == NULL))
759 dprintk("RPC: %5u RPCB_%s call %s\n",
760 task->tk_pid, task->tk_msg.rpc_proc->p_name,
761 (*boolp ? "succeeded" : "failed"));
765 static int encode_rpcb_string(struct xdr_stream *xdr, const char *string,
771 if (unlikely(string == NULL))
773 len = strlen(string);
774 if (unlikely(len > maxstrlen))
777 p = xdr_reserve_space(xdr, sizeof(__be32) + len);
778 if (unlikely(p == NULL))
780 xdr_encode_opaque(p, string, len);
785 static int rpcb_enc_getaddr(struct rpc_rqst *req, __be32 *p,
786 const struct rpcbind_args *rpcb)
788 struct rpc_task *task = req->rq_task;
789 struct xdr_stream xdr;
791 dprintk("RPC: %5u encoding RPCB_%s call (%u, %u, '%s', '%s')\n",
792 task->tk_pid, task->tk_msg.rpc_proc->p_name,
793 rpcb->r_prog, rpcb->r_vers,
794 rpcb->r_netid, rpcb->r_addr);
796 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
798 p = xdr_reserve_space(&xdr,
799 sizeof(__be32) * (RPCB_program_sz + RPCB_version_sz));
800 if (unlikely(p == NULL))
802 *p++ = htonl(rpcb->r_prog);
803 *p = htonl(rpcb->r_vers);
805 if (encode_rpcb_string(&xdr, rpcb->r_netid, RPCBIND_MAXNETIDLEN))
807 if (encode_rpcb_string(&xdr, rpcb->r_addr, RPCBIND_MAXUADDRLEN))
809 if (encode_rpcb_string(&xdr, rpcb->r_owner, RPCB_MAXOWNERLEN))
815 static int rpcb_dec_getaddr(struct rpc_rqst *req, __be32 *p,
816 struct rpcbind_args *rpcb)
818 struct sockaddr_storage address;
819 struct sockaddr *sap = (struct sockaddr *)&address;
820 struct rpc_task *task = req->rq_task;
821 struct xdr_stream xdr;
826 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
828 p = xdr_inline_decode(&xdr, sizeof(__be32));
829 if (unlikely(p == NULL))
834 * If the returned universal address is a null string,
835 * the requested RPC service was not registered.
838 dprintk("RPC: %5u RPCB reply: program not registered\n",
843 if (unlikely(len > RPCBIND_MAXUADDRLEN))
846 p = xdr_inline_decode(&xdr, len);
847 if (unlikely(p == NULL))
849 dprintk("RPC: %5u RPCB_%s reply: %s\n", task->tk_pid,
850 task->tk_msg.rpc_proc->p_name, (char *)p);
852 if (rpc_uaddr2sockaddr((char *)p, len, sap, sizeof(address)) == 0)
854 rpcb->r_port = rpc_get_port(sap);
859 dprintk("RPC: %5u malformed RPCB_%s reply\n",
860 task->tk_pid, task->tk_msg.rpc_proc->p_name);
865 * Not all rpcbind procedures described in RFC 1833 are implemented
866 * since the Linux kernel RPC code requires only these.
869 static struct rpc_procinfo rpcb_procedures2[] = {
871 .p_proc = RPCBPROC_SET,
872 .p_encode = (kxdrproc_t)rpcb_enc_mapping,
873 .p_decode = (kxdrproc_t)rpcb_dec_set,
874 .p_arglen = RPCB_mappingargs_sz,
875 .p_replen = RPCB_setres_sz,
876 .p_statidx = RPCBPROC_SET,
881 .p_proc = RPCBPROC_UNSET,
882 .p_encode = (kxdrproc_t)rpcb_enc_mapping,
883 .p_decode = (kxdrproc_t)rpcb_dec_set,
884 .p_arglen = RPCB_mappingargs_sz,
885 .p_replen = RPCB_setres_sz,
886 .p_statidx = RPCBPROC_UNSET,
890 [RPCBPROC_GETPORT] = {
891 .p_proc = RPCBPROC_GETPORT,
892 .p_encode = (kxdrproc_t)rpcb_enc_mapping,
893 .p_decode = (kxdrproc_t)rpcb_dec_getport,
894 .p_arglen = RPCB_mappingargs_sz,
895 .p_replen = RPCB_getportres_sz,
896 .p_statidx = RPCBPROC_GETPORT,
902 static struct rpc_procinfo rpcb_procedures3[] = {
904 .p_proc = RPCBPROC_SET,
905 .p_encode = (kxdrproc_t)rpcb_enc_getaddr,
906 .p_decode = (kxdrproc_t)rpcb_dec_set,
907 .p_arglen = RPCB_getaddrargs_sz,
908 .p_replen = RPCB_setres_sz,
909 .p_statidx = RPCBPROC_SET,
914 .p_proc = RPCBPROC_UNSET,
915 .p_encode = (kxdrproc_t)rpcb_enc_getaddr,
916 .p_decode = (kxdrproc_t)rpcb_dec_set,
917 .p_arglen = RPCB_getaddrargs_sz,
918 .p_replen = RPCB_setres_sz,
919 .p_statidx = RPCBPROC_UNSET,
923 [RPCBPROC_GETADDR] = {
924 .p_proc = RPCBPROC_GETADDR,
925 .p_encode = (kxdrproc_t)rpcb_enc_getaddr,
926 .p_decode = (kxdrproc_t)rpcb_dec_getaddr,
927 .p_arglen = RPCB_getaddrargs_sz,
928 .p_replen = RPCB_getaddrres_sz,
929 .p_statidx = RPCBPROC_GETADDR,
935 static struct rpc_procinfo rpcb_procedures4[] = {
937 .p_proc = RPCBPROC_SET,
938 .p_encode = (kxdrproc_t)rpcb_enc_getaddr,
939 .p_decode = (kxdrproc_t)rpcb_dec_set,
940 .p_arglen = RPCB_getaddrargs_sz,
941 .p_replen = RPCB_setres_sz,
942 .p_statidx = RPCBPROC_SET,
947 .p_proc = RPCBPROC_UNSET,
948 .p_encode = (kxdrproc_t)rpcb_enc_getaddr,
949 .p_decode = (kxdrproc_t)rpcb_dec_set,
950 .p_arglen = RPCB_getaddrargs_sz,
951 .p_replen = RPCB_setres_sz,
952 .p_statidx = RPCBPROC_UNSET,
956 [RPCBPROC_GETADDR] = {
957 .p_proc = RPCBPROC_GETADDR,
958 .p_encode = (kxdrproc_t)rpcb_enc_getaddr,
959 .p_decode = (kxdrproc_t)rpcb_dec_getaddr,
960 .p_arglen = RPCB_getaddrargs_sz,
961 .p_replen = RPCB_getaddrres_sz,
962 .p_statidx = RPCBPROC_GETADDR,
968 static struct rpcb_info rpcb_next_version[] = {
970 .rpc_vers = RPCBVERS_2,
971 .rpc_proc = &rpcb_procedures2[RPCBPROC_GETPORT],
978 static struct rpcb_info rpcb_next_version6[] = {
980 .rpc_vers = RPCBVERS_4,
981 .rpc_proc = &rpcb_procedures4[RPCBPROC_GETADDR],
984 .rpc_vers = RPCBVERS_3,
985 .rpc_proc = &rpcb_procedures3[RPCBPROC_GETADDR],
992 static struct rpc_version rpcb_version2 = {
993 .number = RPCBVERS_2,
994 .nrprocs = RPCB_HIGHPROC_2,
995 .procs = rpcb_procedures2
998 static struct rpc_version rpcb_version3 = {
999 .number = RPCBVERS_3,
1000 .nrprocs = RPCB_HIGHPROC_3,
1001 .procs = rpcb_procedures3
1004 static struct rpc_version rpcb_version4 = {
1005 .number = RPCBVERS_4,
1006 .nrprocs = RPCB_HIGHPROC_4,
1007 .procs = rpcb_procedures4
1010 static struct rpc_version *rpcb_version[] = {
1018 static struct rpc_stat rpcb_stats;
1020 static struct rpc_program rpcb_program = {
1022 .number = RPCBIND_PROGRAM,
1023 .nrvers = ARRAY_SIZE(rpcb_version),
1024 .version = rpcb_version,
1025 .stats = &rpcb_stats,