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.
66 * We always use the following (arbitrary) fixed string.
68 #define RPCB_OWNER_STRING "rpcb"
69 #define RPCB_MAXOWNERLEN sizeof(RPCB_OWNER_STRING)
71 static void rpcb_getport_done(struct rpc_task
*, void *);
72 static void rpcb_map_release(void *data
);
73 static struct rpc_program rpcb_program
;
76 struct rpc_xprt
* r_xprt
;
81 unsigned short r_port
;
89 static struct rpc_procinfo rpcb_procedures2
[];
90 static struct rpc_procinfo rpcb_procedures3
[];
91 static struct rpc_procinfo rpcb_procedures4
[];
95 struct rpc_procinfo
* rpc_proc
;
98 static struct rpcb_info rpcb_next_version
[];
99 static struct rpcb_info rpcb_next_version6
[];
101 static const struct rpc_call_ops rpcb_getport_ops
= {
102 .rpc_call_done
= rpcb_getport_done
,
103 .rpc_release
= rpcb_map_release
,
106 static void rpcb_wake_rpcbind_waiters(struct rpc_xprt
*xprt
, int status
)
108 xprt_clear_binding(xprt
);
109 rpc_wake_up_status(&xprt
->binding
, status
);
112 static void rpcb_map_release(void *data
)
114 struct rpcbind_args
*map
= data
;
116 rpcb_wake_rpcbind_waiters(map
->r_xprt
, map
->r_status
);
117 xprt_put(map
->r_xprt
);
121 static const struct sockaddr_in rpcb_inaddr_loopback
= {
122 .sin_family
= AF_INET
,
123 .sin_addr
.s_addr
= htonl(INADDR_LOOPBACK
),
124 .sin_port
= htons(RPCBIND_PORT
),
127 static const struct sockaddr_in6 rpcb_in6addr_loopback
= {
128 .sin6_family
= AF_INET6
,
129 .sin6_addr
= IN6ADDR_LOOPBACK_INIT
,
130 .sin6_port
= htons(RPCBIND_PORT
),
133 static struct rpc_clnt
*rpcb_create_local(struct sockaddr
*addr
,
134 size_t addrlen
, u32 version
)
136 struct rpc_create_args args
= {
137 .protocol
= XPRT_TRANSPORT_UDP
,
140 .servername
= "localhost",
141 .program
= &rpcb_program
,
143 .authflavor
= RPC_AUTH_UNIX
,
144 .flags
= RPC_CLNT_CREATE_NOPING
,
147 return rpc_create(&args
);
150 static struct rpc_clnt
*rpcb_create(char *hostname
, struct sockaddr
*srvaddr
,
151 size_t salen
, int proto
, u32 version
)
153 struct rpc_create_args args
= {
157 .servername
= hostname
,
158 .program
= &rpcb_program
,
160 .authflavor
= RPC_AUTH_UNIX
,
161 .flags
= (RPC_CLNT_CREATE_NOPING
|
162 RPC_CLNT_CREATE_NONPRIVPORT
),
165 switch (srvaddr
->sa_family
) {
167 ((struct sockaddr_in
*)srvaddr
)->sin_port
= htons(RPCBIND_PORT
);
170 ((struct sockaddr_in6
*)srvaddr
)->sin6_port
= htons(RPCBIND_PORT
);
176 return rpc_create(&args
);
179 static int rpcb_register_call(struct sockaddr
*addr
, size_t addrlen
,
180 u32 version
, struct rpc_message
*msg
)
182 struct rpc_clnt
*rpcb_clnt
;
183 int result
, error
= 0;
185 msg
->rpc_resp
= &result
;
187 rpcb_clnt
= rpcb_create_local(addr
, addrlen
, version
);
188 if (!IS_ERR(rpcb_clnt
)) {
189 error
= rpc_call_sync(rpcb_clnt
, msg
, 0);
190 rpc_shutdown_client(rpcb_clnt
);
192 error
= PTR_ERR(rpcb_clnt
);
195 printk(KERN_WARNING
"RPC: failed to contact local rpcbind "
196 "server (errno %d).\n", -error
);
206 * rpcb_register - set or unset a port registration with the local rpcbind svc
207 * @prog: RPC program number to bind
208 * @vers: RPC version number to bind
209 * @prot: transport protocol to register
210 * @port: port value to register
212 * Returns zero if the registration request was dispatched successfully
213 * and the rpcbind daemon returned success. Otherwise, returns an errno
214 * value that reflects the nature of the error (request could not be
215 * dispatched, timed out, or rpcbind returned an error).
217 * RPC services invoke this function to advertise their contact
218 * information via the system's rpcbind daemon. RPC services
219 * invoke this function once for each [program, version, transport]
220 * tuple they wish to advertise.
222 * Callers may also unregister RPC services that are no longer
223 * available by setting the passed-in port to zero. This removes
224 * all registered transports for [program, version] from the local
227 * This function uses rpcbind protocol version 2 to contact the
228 * local rpcbind daemon.
230 * Registration works over both AF_INET and AF_INET6, and services
231 * registered via this function are advertised as available for any
232 * address. If the local rpcbind daemon is listening on AF_INET6,
233 * services registered via this function will be advertised on
234 * IN6ADDR_ANY (ie available for all AF_INET and AF_INET6
237 int rpcb_register(u32 prog
, u32 vers
, int prot
, unsigned short port
)
239 struct rpcbind_args map
= {
245 struct rpc_message msg
= {
249 dprintk("RPC: %sregistering (%u, %u, %d, %u) with local "
250 "rpcbind\n", (port
? "" : "un"),
251 prog
, vers
, prot
, port
);
253 msg
.rpc_proc
= &rpcb_procedures2
[RPCBPROC_UNSET
];
255 msg
.rpc_proc
= &rpcb_procedures2
[RPCBPROC_SET
];
257 return rpcb_register_call((struct sockaddr
*)&rpcb_inaddr_loopback
,
258 sizeof(rpcb_inaddr_loopback
),
263 * Fill in AF_INET family-specific arguments to register
265 static int rpcb_register_netid4(struct sockaddr_in
*address_to_register
,
266 struct rpc_message
*msg
)
268 struct rpcbind_args
*map
= msg
->rpc_argp
;
269 unsigned short port
= ntohs(address_to_register
->sin_port
);
272 /* Construct AF_INET universal address */
273 snprintf(buf
, sizeof(buf
),
275 NIPQUAD(address_to_register
->sin_addr
.s_addr
),
276 port
>> 8, port
& 0xff);
279 dprintk("RPC: %sregistering [%u, %u, %s, '%s'] with "
280 "local rpcbind\n", (port
? "" : "un"),
281 map
->r_prog
, map
->r_vers
,
282 map
->r_addr
, map
->r_netid
);
284 msg
->rpc_proc
= &rpcb_procedures4
[RPCBPROC_UNSET
];
286 msg
->rpc_proc
= &rpcb_procedures4
[RPCBPROC_SET
];
288 return rpcb_register_call((struct sockaddr
*)&rpcb_inaddr_loopback
,
289 sizeof(rpcb_inaddr_loopback
),
294 * Fill in AF_INET6 family-specific arguments to register
296 static int rpcb_register_netid6(struct sockaddr_in6
*address_to_register
,
297 struct rpc_message
*msg
)
299 struct rpcbind_args
*map
= msg
->rpc_argp
;
300 unsigned short port
= ntohs(address_to_register
->sin6_port
);
303 /* Construct AF_INET6 universal address */
304 if (ipv6_addr_any(&address_to_register
->sin6_addr
))
305 snprintf(buf
, sizeof(buf
), "::.%u.%u",
306 port
>> 8, port
& 0xff);
308 snprintf(buf
, sizeof(buf
), NIP6_FMT
".%u.%u",
309 NIP6(address_to_register
->sin6_addr
),
310 port
>> 8, port
& 0xff);
313 dprintk("RPC: %sregistering [%u, %u, %s, '%s'] with "
314 "local rpcbind\n", (port
? "" : "un"),
315 map
->r_prog
, map
->r_vers
,
316 map
->r_addr
, map
->r_netid
);
318 msg
->rpc_proc
= &rpcb_procedures4
[RPCBPROC_UNSET
];
320 msg
->rpc_proc
= &rpcb_procedures4
[RPCBPROC_SET
];
322 return rpcb_register_call((struct sockaddr
*)&rpcb_in6addr_loopback
,
323 sizeof(rpcb_in6addr_loopback
),
328 * rpcb_v4_register - set or unset a port registration with the local rpcbind
329 * @program: RPC program number of service to (un)register
330 * @version: RPC version number of service to (un)register
331 * @address: address family, IP address, and port to (un)register
332 * @netid: netid of transport protocol to (un)register
334 * Returns zero if the registration request was dispatched successfully
335 * and the rpcbind daemon returned success. Otherwise, returns an errno
336 * value that reflects the nature of the error (request could not be
337 * dispatched, timed out, or rpcbind returned an error).
339 * RPC services invoke this function to advertise their contact
340 * information via the system's rpcbind daemon. RPC services
341 * invoke this function once for each [program, version, address,
342 * netid] tuple they wish to advertise.
344 * Callers may also unregister RPC services that are no longer
345 * available by setting the port number in the passed-in address
346 * to zero. Callers pass a netid of "" to unregister all
347 * transport netids associated with [program, version, address].
349 * This function uses rpcbind protocol version 4 to contact the
350 * local rpcbind daemon. The local rpcbind daemon must support
351 * version 4 of the rpcbind protocol in order for these functions
352 * to register a service successfully.
354 * Supported netids include "udp" and "tcp" for UDP and TCP over
355 * IPv4, and "udp6" and "tcp6" for UDP and TCP over IPv6,
358 * The contents of @address determine the address family and the
359 * port to be registered. The usual practice is to pass INADDR_ANY
360 * as the raw address, but specifying a non-zero address is also
361 * supported by this API if the caller wishes to advertise an RPC
362 * service on a specific network interface.
364 * Note that passing in INADDR_ANY does not create the same service
365 * registration as IN6ADDR_ANY. The former advertises an RPC
366 * service on any IPv4 address, but not on IPv6. The latter
367 * advertises the service on all IPv4 and IPv6 addresses.
369 int rpcb_v4_register(const u32 program
, const u32 version
,
370 const struct sockaddr
*address
, const char *netid
)
372 struct rpcbind_args map
= {
376 .r_owner
= RPCB_OWNER_STRING
,
378 struct rpc_message msg
= {
382 switch (address
->sa_family
) {
384 return rpcb_register_netid4((struct sockaddr_in
*)address
,
387 return rpcb_register_netid6((struct sockaddr_in6
*)address
,
391 return -EAFNOSUPPORT
;
395 * rpcb_getport_sync - obtain the port for an RPC service on a given host
396 * @sin: address of remote peer
397 * @prog: RPC program number to bind
398 * @vers: RPC version number to bind
399 * @prot: transport protocol to use to make this request
401 * Return value is the requested advertised port number,
402 * or a negative errno value.
404 * Called from outside the RPC client in a synchronous task context.
405 * Uses default timeout parameters specified by underlying transport.
407 * XXX: Needs to support IPv6
409 int rpcb_getport_sync(struct sockaddr_in
*sin
, u32 prog
, u32 vers
, int prot
)
411 struct rpcbind_args map
= {
417 struct rpc_message msg
= {
418 .rpc_proc
= &rpcb_procedures2
[RPCBPROC_GETPORT
],
420 .rpc_resp
= &map
.r_port
,
422 struct rpc_clnt
*rpcb_clnt
;
425 dprintk("RPC: %s(" NIPQUAD_FMT
", %u, %u, %d)\n",
426 __func__
, NIPQUAD(sin
->sin_addr
.s_addr
), prog
, vers
, prot
);
428 rpcb_clnt
= rpcb_create(NULL
, (struct sockaddr
*)sin
,
429 sizeof(*sin
), prot
, RPCBVERS_2
);
430 if (IS_ERR(rpcb_clnt
))
431 return PTR_ERR(rpcb_clnt
);
433 status
= rpc_call_sync(rpcb_clnt
, &msg
, 0);
434 rpc_shutdown_client(rpcb_clnt
);
443 EXPORT_SYMBOL_GPL(rpcb_getport_sync
);
445 static struct rpc_task
*rpcb_call_async(struct rpc_clnt
*rpcb_clnt
, struct rpcbind_args
*map
, struct rpc_procinfo
*proc
)
447 struct rpc_message msg
= {
450 .rpc_resp
= &map
->r_port
,
452 struct rpc_task_setup task_setup_data
= {
453 .rpc_client
= rpcb_clnt
,
455 .callback_ops
= &rpcb_getport_ops
,
456 .callback_data
= map
,
457 .flags
= RPC_TASK_ASYNC
,
460 return rpc_run_task(&task_setup_data
);
464 * In the case where rpc clients have been cloned, we want to make
465 * sure that we use the program number/version etc of the actual
466 * owner of the xprt. To do so, we walk back up the tree of parents
467 * to find whoever created the transport and/or whoever has the
470 static struct rpc_clnt
*rpcb_find_transport_owner(struct rpc_clnt
*clnt
)
472 struct rpc_clnt
*parent
= clnt
->cl_parent
;
474 while (parent
!= clnt
) {
475 if (parent
->cl_xprt
!= clnt
->cl_xprt
)
477 if (clnt
->cl_autobind
)
480 parent
= parent
->cl_parent
;
486 * rpcb_getport_async - obtain the port for a given RPC service on a given host
487 * @task: task that is waiting for portmapper request
489 * This one can be called for an ongoing RPC request, and can be used in
490 * an async (rpciod) context.
492 void rpcb_getport_async(struct rpc_task
*task
)
494 struct rpc_clnt
*clnt
;
495 struct rpc_procinfo
*proc
;
497 struct rpc_xprt
*xprt
;
498 struct rpc_clnt
*rpcb_clnt
;
499 static struct rpcbind_args
*map
;
500 struct rpc_task
*child
;
501 struct sockaddr_storage addr
;
502 struct sockaddr
*sap
= (struct sockaddr
*)&addr
;
506 clnt
= rpcb_find_transport_owner(task
->tk_client
);
507 xprt
= clnt
->cl_xprt
;
509 dprintk("RPC: %5u %s(%s, %u, %u, %d)\n",
510 task
->tk_pid
, __func__
,
511 clnt
->cl_server
, clnt
->cl_prog
, clnt
->cl_vers
, xprt
->prot
);
513 /* Put self on the wait queue to ensure we get notified if
514 * some other task is already attempting to bind the port */
515 rpc_sleep_on(&xprt
->binding
, task
, NULL
);
517 if (xprt_test_and_set_binding(xprt
)) {
518 dprintk("RPC: %5u %s: waiting for another binder\n",
519 task
->tk_pid
, __func__
);
523 /* Someone else may have bound if we slept */
524 if (xprt_bound(xprt
)) {
526 dprintk("RPC: %5u %s: already bound\n",
527 task
->tk_pid
, __func__
);
531 salen
= rpc_peeraddr(clnt
, sap
, sizeof(addr
));
533 /* Don't ever use rpcbind v2 for AF_INET6 requests */
534 switch (sap
->sa_family
) {
536 proc
= rpcb_next_version
[xprt
->bind_index
].rpc_proc
;
537 bind_version
= rpcb_next_version
[xprt
->bind_index
].rpc_vers
;
540 proc
= rpcb_next_version6
[xprt
->bind_index
].rpc_proc
;
541 bind_version
= rpcb_next_version6
[xprt
->bind_index
].rpc_vers
;
544 status
= -EAFNOSUPPORT
;
545 dprintk("RPC: %5u %s: bad address family\n",
546 task
->tk_pid
, __func__
);
550 xprt
->bind_index
= 0;
551 status
= -EPFNOSUPPORT
;
552 dprintk("RPC: %5u %s: no more getport versions available\n",
553 task
->tk_pid
, __func__
);
557 dprintk("RPC: %5u %s: trying rpcbind version %u\n",
558 task
->tk_pid
, __func__
, bind_version
);
560 rpcb_clnt
= rpcb_create(clnt
->cl_server
, sap
, salen
, xprt
->prot
,
562 if (IS_ERR(rpcb_clnt
)) {
563 status
= PTR_ERR(rpcb_clnt
);
564 dprintk("RPC: %5u %s: rpcb_create failed, error %ld\n",
565 task
->tk_pid
, __func__
, PTR_ERR(rpcb_clnt
));
569 map
= kzalloc(sizeof(struct rpcbind_args
), GFP_ATOMIC
);
572 dprintk("RPC: %5u %s: no memory available\n",
573 task
->tk_pid
, __func__
);
574 goto bailout_release_client
;
576 map
->r_prog
= clnt
->cl_prog
;
577 map
->r_vers
= clnt
->cl_vers
;
578 map
->r_prot
= xprt
->prot
;
580 map
->r_xprt
= xprt_get(xprt
);
581 map
->r_netid
= rpc_peeraddr2str(clnt
, RPC_DISPLAY_NETID
);
582 map
->r_addr
= rpc_peeraddr2str(rpcb_clnt
, RPC_DISPLAY_UNIVERSAL_ADDR
);
583 map
->r_owner
= RPCB_OWNER_STRING
; /* ignored for GETADDR */
584 map
->r_status
= -EIO
;
586 child
= rpcb_call_async(rpcb_clnt
, map
, proc
);
587 rpc_release_client(rpcb_clnt
);
589 /* rpcb_map_release() has freed the arguments */
590 dprintk("RPC: %5u %s: rpc_run_task failed\n",
591 task
->tk_pid
, __func__
);
595 xprt
->stat
.bind_count
++;
599 bailout_release_client
:
600 rpc_release_client(rpcb_clnt
);
602 rpcb_wake_rpcbind_waiters(xprt
, status
);
603 task
->tk_status
= status
;
605 EXPORT_SYMBOL_GPL(rpcb_getport_async
);
608 * Rpcbind child task calls this callback via tk_exit.
610 static void rpcb_getport_done(struct rpc_task
*child
, void *data
)
612 struct rpcbind_args
*map
= data
;
613 struct rpc_xprt
*xprt
= map
->r_xprt
;
614 int status
= child
->tk_status
;
616 /* Garbage reply: retry with a lesser rpcbind version */
618 status
= -EPROTONOSUPPORT
;
620 /* rpcbind server doesn't support this rpcbind protocol version */
621 if (status
== -EPROTONOSUPPORT
)
625 /* rpcbind server not available on remote host? */
626 xprt
->ops
->set_port(xprt
, 0);
627 } else if (map
->r_port
== 0) {
628 /* Requested RPC service wasn't registered on remote host */
629 xprt
->ops
->set_port(xprt
, 0);
633 xprt
->ops
->set_port(xprt
, map
->r_port
);
634 xprt_set_bound(xprt
);
638 dprintk("RPC: %5u rpcb_getport_done(status %d, port %u)\n",
639 child
->tk_pid
, status
, map
->r_port
);
641 map
->r_status
= status
;
645 * XDR functions for rpcbind
648 static int rpcb_encode_mapping(struct rpc_rqst
*req
, __be32
*p
,
649 struct rpcbind_args
*rpcb
)
651 dprintk("RPC: encoding rpcb request (%u, %u, %d, %u)\n",
652 rpcb
->r_prog
, rpcb
->r_vers
, rpcb
->r_prot
, rpcb
->r_port
);
653 *p
++ = htonl(rpcb
->r_prog
);
654 *p
++ = htonl(rpcb
->r_vers
);
655 *p
++ = htonl(rpcb
->r_prot
);
656 *p
++ = htonl(rpcb
->r_port
);
658 req
->rq_slen
= xdr_adjust_iovec(req
->rq_svec
, p
);
662 static int rpcb_decode_getport(struct rpc_rqst
*req
, __be32
*p
,
663 unsigned short *portp
)
665 *portp
= (unsigned short) ntohl(*p
++);
666 dprintk("RPC: rpcb getport result: %u\n",
671 static int rpcb_decode_set(struct rpc_rqst
*req
, __be32
*p
,
674 *boolp
= (unsigned int) ntohl(*p
++);
675 dprintk("RPC: rpcb set/unset call %s\n",
676 (*boolp
? "succeeded" : "failed"));
680 static int rpcb_encode_getaddr(struct rpc_rqst
*req
, __be32
*p
,
681 struct rpcbind_args
*rpcb
)
683 dprintk("RPC: encoding rpcb request (%u, %u, %s)\n",
684 rpcb
->r_prog
, rpcb
->r_vers
, rpcb
->r_addr
);
685 *p
++ = htonl(rpcb
->r_prog
);
686 *p
++ = htonl(rpcb
->r_vers
);
688 p
= xdr_encode_string(p
, rpcb
->r_netid
);
689 p
= xdr_encode_string(p
, rpcb
->r_addr
);
690 p
= xdr_encode_string(p
, rpcb
->r_owner
);
692 req
->rq_slen
= xdr_adjust_iovec(req
->rq_svec
, p
);
697 static int rpcb_decode_getaddr(struct rpc_rqst
*req
, __be32
*p
,
698 unsigned short *portp
)
702 int c
, i
, f
, first
, val
;
705 addr_len
= ntohl(*p
++);
708 * Simple sanity check. The smallest possible universal
709 * address is an IPv4 address string containing 11 bytes.
711 if (addr_len
< 11 || addr_len
> RPCBIND_MAXUADDRLEN
)
715 * Start at the end and walk backwards until the first dot
716 * is encountered. When the second dot is found, we have
717 * both parts of the port number.
723 for (i
= addr_len
- 1; i
> 0; i
--) {
725 if (c
>= '0' && c
<= '9') {
726 val
+= (c
- '0') * f
;
728 } else if (c
== '.') {
734 *portp
|= (val
<< 8);
741 * Simple sanity check. If we never saw a dot in the reply,
742 * then this was probably just garbage.
747 dprintk("RPC: rpcb_decode_getaddr port=%u\n", *portp
);
751 dprintk("RPC: rpcbind server returned malformed reply\n");
755 #define RPCB_program_sz (1u)
756 #define RPCB_version_sz (1u)
757 #define RPCB_protocol_sz (1u)
758 #define RPCB_port_sz (1u)
759 #define RPCB_boolean_sz (1u)
761 #define RPCB_netid_sz (1+XDR_QUADLEN(RPCBIND_MAXNETIDLEN))
762 #define RPCB_addr_sz (1+XDR_QUADLEN(RPCBIND_MAXUADDRLEN))
763 #define RPCB_ownerstring_sz (1+XDR_QUADLEN(RPCB_MAXOWNERLEN))
765 #define RPCB_mappingargs_sz RPCB_program_sz+RPCB_version_sz+ \
766 RPCB_protocol_sz+RPCB_port_sz
767 #define RPCB_getaddrargs_sz RPCB_program_sz+RPCB_version_sz+ \
768 RPCB_netid_sz+RPCB_addr_sz+ \
771 #define RPCB_setres_sz RPCB_boolean_sz
772 #define RPCB_getportres_sz RPCB_port_sz
775 * Note that RFC 1833 does not put any size restrictions on the
776 * address string returned by the remote rpcbind database.
778 #define RPCB_getaddrres_sz RPCB_addr_sz
780 #define PROC(proc, argtype, restype) \
781 [RPCBPROC_##proc] = { \
782 .p_proc = RPCBPROC_##proc, \
783 .p_encode = (kxdrproc_t) rpcb_encode_##argtype, \
784 .p_decode = (kxdrproc_t) rpcb_decode_##restype, \
785 .p_arglen = RPCB_##argtype##args_sz, \
786 .p_replen = RPCB_##restype##res_sz, \
787 .p_statidx = RPCBPROC_##proc, \
793 * Not all rpcbind procedures described in RFC 1833 are implemented
794 * since the Linux kernel RPC code requires only these.
796 static struct rpc_procinfo rpcb_procedures2
[] = {
797 PROC(SET
, mapping
, set
),
798 PROC(UNSET
, mapping
, set
),
799 PROC(GETPORT
, mapping
, getport
),
802 static struct rpc_procinfo rpcb_procedures3
[] = {
803 PROC(SET
, getaddr
, set
),
804 PROC(UNSET
, getaddr
, set
),
805 PROC(GETADDR
, getaddr
, getaddr
),
808 static struct rpc_procinfo rpcb_procedures4
[] = {
809 PROC(SET
, getaddr
, set
),
810 PROC(UNSET
, getaddr
, set
),
811 PROC(GETADDR
, getaddr
, getaddr
),
812 PROC(GETVERSADDR
, getaddr
, getaddr
),
815 static struct rpcb_info rpcb_next_version
[] = {
817 .rpc_vers
= RPCBVERS_2
,
818 .rpc_proc
= &rpcb_procedures2
[RPCBPROC_GETPORT
],
825 static struct rpcb_info rpcb_next_version6
[] = {
827 .rpc_vers
= RPCBVERS_4
,
828 .rpc_proc
= &rpcb_procedures4
[RPCBPROC_GETADDR
],
831 .rpc_vers
= RPCBVERS_3
,
832 .rpc_proc
= &rpcb_procedures3
[RPCBPROC_GETADDR
],
839 static struct rpc_version rpcb_version2
= {
840 .number
= RPCBVERS_2
,
841 .nrprocs
= RPCB_HIGHPROC_2
,
842 .procs
= rpcb_procedures2
845 static struct rpc_version rpcb_version3
= {
846 .number
= RPCBVERS_3
,
847 .nrprocs
= RPCB_HIGHPROC_3
,
848 .procs
= rpcb_procedures3
851 static struct rpc_version rpcb_version4
= {
852 .number
= RPCBVERS_4
,
853 .nrprocs
= RPCB_HIGHPROC_4
,
854 .procs
= rpcb_procedures4
857 static struct rpc_version
*rpcb_version
[] = {
865 static struct rpc_stat rpcb_stats
;
867 static struct rpc_program rpcb_program
= {
869 .number
= RPCBIND_PROGRAM
,
870 .nrvers
= ARRAY_SIZE(rpcb_version
),
871 .version
= rpcb_version
,
872 .stats
= &rpcb_stats
,