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>
23 #include <linux/mutex.h>
24 #include <linux/slab.h>
27 #include <linux/sunrpc/clnt.h>
28 #include <linux/sunrpc/sched.h>
29 #include <linux/sunrpc/xprtsock.h>
32 # define RPCDBG_FACILITY RPCDBG_BIND
35 #define RPCBIND_PROGRAM (100000u)
36 #define RPCBIND_PORT (111u)
38 #define RPCBVERS_2 (2u)
39 #define RPCBVERS_3 (3u)
40 #define RPCBVERS_4 (4u)
47 RPCBPROC_GETADDR = 3, /* alias for GETPORT */
50 RPCBPROC_BCAST = 5, /* alias for CALLIT */
60 #define RPCB_HIGHPROC_2 RPCBPROC_CALLIT
61 #define RPCB_HIGHPROC_3 RPCBPROC_TADDR2UADDR
62 #define RPCB_HIGHPROC_4 RPCBPROC_GETSTAT
67 * The "owner" is allowed to unset a service in the rpcbind database.
69 * For AF_LOCAL SET/UNSET requests, rpcbind treats this string as a
70 * UID which it maps to a local user name via a password lookup.
71 * In all other cases it is ignored.
73 * For SET/UNSET requests, user space provides a value, even for
74 * network requests, and GETADDR uses an empty string. We follow
75 * those precedents here.
77 #define RPCB_OWNER_STRING "0"
78 #define RPCB_MAXOWNERLEN sizeof(RPCB_OWNER_STRING)
83 #define RPCB_program_sz (1)
84 #define RPCB_version_sz (1)
85 #define RPCB_protocol_sz (1)
86 #define RPCB_port_sz (1)
87 #define RPCB_boolean_sz (1)
89 #define RPCB_netid_sz (1 + XDR_QUADLEN(RPCBIND_MAXNETIDLEN))
90 #define RPCB_addr_sz (1 + XDR_QUADLEN(RPCBIND_MAXUADDRLEN))
91 #define RPCB_ownerstring_sz (1 + XDR_QUADLEN(RPCB_MAXOWNERLEN))
94 * XDR argument and result sizes
96 #define RPCB_mappingargs_sz (RPCB_program_sz + RPCB_version_sz + \
97 RPCB_protocol_sz + RPCB_port_sz)
98 #define RPCB_getaddrargs_sz (RPCB_program_sz + RPCB_version_sz + \
99 RPCB_netid_sz + RPCB_addr_sz + \
102 #define RPCB_getportres_sz RPCB_port_sz
103 #define RPCB_setres_sz RPCB_boolean_sz
106 * Note that RFC 1833 does not put any size restrictions on the
107 * address string returned by the remote rpcbind database.
109 #define RPCB_getaddrres_sz RPCB_addr_sz
111 static void rpcb_getport_done(struct rpc_task *, void *);
112 static void rpcb_map_release(void *data);
113 static struct rpc_program rpcb_program;
115 static struct rpc_clnt * rpcb_local_clnt;
116 static struct rpc_clnt * rpcb_local_clnt4;
118 struct rpcbind_args {
119 struct rpc_xprt * r_xprt;
124 unsigned short r_port;
125 const char * r_netid;
127 const char * r_owner;
132 static struct rpc_procinfo rpcb_procedures2[];
133 static struct rpc_procinfo rpcb_procedures3[];
134 static struct rpc_procinfo rpcb_procedures4[];
138 struct rpc_procinfo * rpc_proc;
141 static struct rpcb_info rpcb_next_version[];
142 static struct rpcb_info rpcb_next_version6[];
144 static const struct rpc_call_ops rpcb_getport_ops = {
145 .rpc_call_done = rpcb_getport_done,
146 .rpc_release = rpcb_map_release,
149 static void rpcb_wake_rpcbind_waiters(struct rpc_xprt *xprt, int status)
151 xprt_clear_binding(xprt);
152 rpc_wake_up_status(&xprt->binding, status);
155 static void rpcb_map_release(void *data)
157 struct rpcbind_args *map = data;
159 rpcb_wake_rpcbind_waiters(map->r_xprt, map->r_status);
160 xprt_put(map->r_xprt);
165 static const struct sockaddr_in rpcb_inaddr_loopback = {
166 .sin_family = AF_INET,
167 .sin_addr.s_addr = htonl(INADDR_LOOPBACK),
168 .sin_port = htons(RPCBIND_PORT),
171 static DEFINE_MUTEX(rpcb_create_local_mutex);
174 * Returns zero on success, otherwise a negative errno value
177 static int rpcb_create_local(void)
179 struct rpc_create_args args = {
180 .protocol = XPRT_TRANSPORT_TCP,
181 .address = (struct sockaddr *)&rpcb_inaddr_loopback,
182 .addrsize = sizeof(rpcb_inaddr_loopback),
183 .servername = "localhost",
184 .program = &rpcb_program,
185 .version = RPCBVERS_2,
186 .authflavor = RPC_AUTH_UNIX,
187 .flags = RPC_CLNT_CREATE_NOPING,
189 struct rpc_clnt *clnt, *clnt4;
195 mutex_lock(&rpcb_create_local_mutex);
199 clnt = rpc_create(&args);
201 dprintk("RPC: failed to create local rpcbind "
202 "client (errno %ld).\n", PTR_ERR(clnt));
203 result = -PTR_ERR(clnt);
208 * This results in an RPC ping. On systems running portmapper,
209 * the v4 ping will fail. Proceed anyway, but disallow rpcb
212 clnt4 = rpc_bind_new_program(clnt, &rpcb_program, RPCBVERS_4);
214 dprintk("RPC: failed to bind second program to "
215 "rpcbind v4 client (errno %ld).\n",
220 rpcb_local_clnt = clnt;
221 rpcb_local_clnt4 = clnt4;
224 mutex_unlock(&rpcb_create_local_mutex);
228 static struct rpc_clnt *rpcb_create(char *hostname, struct sockaddr *srvaddr,
229 size_t salen, int proto, u32 version)
231 struct rpc_create_args args = {
235 .servername = hostname,
236 .program = &rpcb_program,
238 .authflavor = RPC_AUTH_UNIX,
239 .flags = (RPC_CLNT_CREATE_NOPING |
240 RPC_CLNT_CREATE_NONPRIVPORT),
243 switch (srvaddr->sa_family) {
245 ((struct sockaddr_in *)srvaddr)->sin_port = htons(RPCBIND_PORT);
248 ((struct sockaddr_in6 *)srvaddr)->sin6_port = htons(RPCBIND_PORT);
254 return rpc_create(&args);
257 static int rpcb_register_call(struct rpc_clnt *clnt, struct rpc_message *msg)
259 int result, error = 0;
261 msg->rpc_resp = &result;
263 error = rpc_call_sync(clnt, msg, RPC_TASK_SOFTCONN);
265 dprintk("RPC: failed to contact local rpcbind "
266 "server (errno %d).\n", -error);
276 * rpcb_register - set or unset a port registration with the local rpcbind svc
277 * @prog: RPC program number to bind
278 * @vers: RPC version number to bind
279 * @prot: transport protocol to register
280 * @port: port value to register
282 * Returns zero if the registration request was dispatched successfully
283 * and the rpcbind daemon returned success. Otherwise, returns an errno
284 * value that reflects the nature of the error (request could not be
285 * dispatched, timed out, or rpcbind returned an error).
287 * RPC services invoke this function to advertise their contact
288 * information via the system's rpcbind daemon. RPC services
289 * invoke this function once for each [program, version, transport]
290 * tuple they wish to advertise.
292 * Callers may also unregister RPC services that are no longer
293 * available by setting the passed-in port to zero. This removes
294 * all registered transports for [program, version] from the local
297 * This function uses rpcbind protocol version 2 to contact the
298 * local rpcbind daemon.
300 * Registration works over both AF_INET and AF_INET6, and services
301 * registered via this function are advertised as available for any
302 * address. If the local rpcbind daemon is listening on AF_INET6,
303 * services registered via this function will be advertised on
304 * IN6ADDR_ANY (ie available for all AF_INET and AF_INET6
307 int rpcb_register(u32 prog, u32 vers, int prot, unsigned short port)
309 struct rpcbind_args map = {
315 struct rpc_message msg = {
320 error = rpcb_create_local();
324 dprintk("RPC: %sregistering (%u, %u, %d, %u) with local "
325 "rpcbind\n", (port ? "" : "un"),
326 prog, vers, prot, port);
328 msg.rpc_proc = &rpcb_procedures2[RPCBPROC_UNSET];
330 msg.rpc_proc = &rpcb_procedures2[RPCBPROC_SET];
332 return rpcb_register_call(rpcb_local_clnt, &msg);
336 * Fill in AF_INET family-specific arguments to register
338 static int rpcb_register_inet4(const struct sockaddr *sap,
339 struct rpc_message *msg)
341 const struct sockaddr_in *sin = (const struct sockaddr_in *)sap;
342 struct rpcbind_args *map = msg->rpc_argp;
343 unsigned short port = ntohs(sin->sin_port);
346 map->r_addr = rpc_sockaddr2uaddr(sap);
348 dprintk("RPC: %sregistering [%u, %u, %s, '%s'] with "
349 "local rpcbind\n", (port ? "" : "un"),
350 map->r_prog, map->r_vers,
351 map->r_addr, map->r_netid);
353 msg->rpc_proc = &rpcb_procedures4[RPCBPROC_UNSET];
355 msg->rpc_proc = &rpcb_procedures4[RPCBPROC_SET];
357 result = rpcb_register_call(rpcb_local_clnt4, msg);
363 * Fill in AF_INET6 family-specific arguments to register
365 static int rpcb_register_inet6(const struct sockaddr *sap,
366 struct rpc_message *msg)
368 const struct sockaddr_in6 *sin6 = (const struct sockaddr_in6 *)sap;
369 struct rpcbind_args *map = msg->rpc_argp;
370 unsigned short port = ntohs(sin6->sin6_port);
373 map->r_addr = rpc_sockaddr2uaddr(sap);
375 dprintk("RPC: %sregistering [%u, %u, %s, '%s'] with "
376 "local rpcbind\n", (port ? "" : "un"),
377 map->r_prog, map->r_vers,
378 map->r_addr, map->r_netid);
380 msg->rpc_proc = &rpcb_procedures4[RPCBPROC_UNSET];
382 msg->rpc_proc = &rpcb_procedures4[RPCBPROC_SET];
384 result = rpcb_register_call(rpcb_local_clnt4, msg);
389 static int rpcb_unregister_all_protofamilies(struct rpc_message *msg)
391 struct rpcbind_args *map = msg->rpc_argp;
393 dprintk("RPC: unregistering [%u, %u, '%s'] with "
395 map->r_prog, map->r_vers, map->r_netid);
398 msg->rpc_proc = &rpcb_procedures4[RPCBPROC_UNSET];
400 return rpcb_register_call(rpcb_local_clnt4, msg);
404 * rpcb_v4_register - set or unset a port registration with the local rpcbind
405 * @program: RPC program number of service to (un)register
406 * @version: RPC version number of service to (un)register
407 * @address: address family, IP address, and port to (un)register
408 * @netid: netid of transport protocol to (un)register
410 * Returns zero if the registration request was dispatched successfully
411 * and the rpcbind daemon returned success. Otherwise, returns an errno
412 * value that reflects the nature of the error (request could not be
413 * dispatched, timed out, or rpcbind returned an error).
415 * RPC services invoke this function to advertise their contact
416 * information via the system's rpcbind daemon. RPC services
417 * invoke this function once for each [program, version, address,
418 * netid] tuple they wish to advertise.
420 * Callers may also unregister RPC services that are registered at a
421 * specific address by setting the port number in @address to zero.
422 * They may unregister all registered protocol families at once for
423 * a service by passing a NULL @address argument. If @netid is ""
424 * then all netids for [program, version, address] are unregistered.
426 * This function uses rpcbind protocol version 4 to contact the
427 * local rpcbind daemon. The local rpcbind daemon must support
428 * version 4 of the rpcbind protocol in order for these functions
429 * to register a service successfully.
431 * Supported netids include "udp" and "tcp" for UDP and TCP over
432 * IPv4, and "udp6" and "tcp6" for UDP and TCP over IPv6,
435 * The contents of @address determine the address family and the
436 * port to be registered. The usual practice is to pass INADDR_ANY
437 * as the raw address, but specifying a non-zero address is also
438 * supported by this API if the caller wishes to advertise an RPC
439 * service on a specific network interface.
441 * Note that passing in INADDR_ANY does not create the same service
442 * registration as IN6ADDR_ANY. The former advertises an RPC
443 * service on any IPv4 address, but not on IPv6. The latter
444 * advertises the service on all IPv4 and IPv6 addresses.
446 int rpcb_v4_register(const u32 program, const u32 version,
447 const struct sockaddr *address, const char *netid)
449 struct rpcbind_args map = {
453 .r_owner = RPCB_OWNER_STRING,
455 struct rpc_message msg = {
460 error = rpcb_create_local();
463 if (rpcb_local_clnt4 == NULL)
464 return -EPROTONOSUPPORT;
467 return rpcb_unregister_all_protofamilies(&msg);
469 switch (address->sa_family) {
471 return rpcb_register_inet4(address, &msg);
473 return rpcb_register_inet6(address, &msg);
476 return -EAFNOSUPPORT;
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 | RPC_TASK_SOFTCONN,
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 > USHRT_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,
1029 * cleanup_rpcb_clnt - remove xprtsock's sysctls, unregister
1032 void cleanup_rpcb_clnt(void)
1034 if (rpcb_local_clnt4)
1035 rpc_shutdown_client(rpcb_local_clnt4);
1036 if (rpcb_local_clnt)
1037 rpc_shutdown_client(rpcb_local_clnt);