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a509050b CL |
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 | ||
cce63cd6 CL |
15 | #include <linux/module.h> |
16 | ||
a509050b CL |
17 | #include <linux/types.h> |
18 | #include <linux/socket.h> | |
d5b64430 CL |
19 | #include <linux/in.h> |
20 | #include <linux/in6.h> | |
a509050b CL |
21 | #include <linux/kernel.h> |
22 | #include <linux/errno.h> | |
c526611d | 23 | #include <linux/mutex.h> |
5a0e3ad6 | 24 | #include <linux/slab.h> |
9d548b9c | 25 | #include <net/ipv6.h> |
a509050b CL |
26 | |
27 | #include <linux/sunrpc/clnt.h> | |
28 | #include <linux/sunrpc/sched.h> | |
0896a725 | 29 | #include <linux/sunrpc/xprtsock.h> |
a509050b CL |
30 | |
31 | #ifdef RPC_DEBUG | |
32 | # define RPCDBG_FACILITY RPCDBG_BIND | |
33 | #endif | |
34 | ||
35 | #define RPCBIND_PROGRAM (100000u) | |
36 | #define RPCBIND_PORT (111u) | |
37 | ||
fc200e79 CL |
38 | #define RPCBVERS_2 (2u) |
39 | #define RPCBVERS_3 (3u) | |
40 | #define RPCBVERS_4 (4u) | |
41 | ||
a509050b CL |
42 | enum { |
43 | RPCBPROC_NULL, | |
44 | RPCBPROC_SET, | |
45 | RPCBPROC_UNSET, | |
46 | RPCBPROC_GETPORT, | |
47 | RPCBPROC_GETADDR = 3, /* alias for GETPORT */ | |
48 | RPCBPROC_DUMP, | |
49 | RPCBPROC_CALLIT, | |
50 | RPCBPROC_BCAST = 5, /* alias for CALLIT */ | |
51 | RPCBPROC_GETTIME, | |
52 | RPCBPROC_UADDR2TADDR, | |
53 | RPCBPROC_TADDR2UADDR, | |
54 | RPCBPROC_GETVERSADDR, | |
55 | RPCBPROC_INDIRECT, | |
56 | RPCBPROC_GETADDRLIST, | |
57 | RPCBPROC_GETSTAT, | |
58 | }; | |
59 | ||
60 | #define RPCB_HIGHPROC_2 RPCBPROC_CALLIT | |
61 | #define RPCB_HIGHPROC_3 RPCBPROC_TADDR2UADDR | |
62 | #define RPCB_HIGHPROC_4 RPCBPROC_GETSTAT | |
63 | ||
a509050b CL |
64 | /* |
65 | * r_owner | |
66 | * | |
67 | * The "owner" is allowed to unset a service in the rpcbind database. | |
126e4bc3 CL |
68 | * |
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. | |
72 | * | |
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. | |
a509050b | 76 | */ |
126e4bc3 | 77 | #define RPCB_OWNER_STRING "0" |
a509050b CL |
78 | #define RPCB_MAXOWNERLEN sizeof(RPCB_OWNER_STRING) |
79 | ||
0b10bf5e CL |
80 | /* |
81 | * XDR data type sizes | |
82 | */ | |
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) | |
88 | ||
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)) | |
92 | ||
93 | /* | |
94 | * XDR argument and result sizes | |
95 | */ | |
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 + \ | |
100 | RPCB_ownerstring_sz) | |
101 | ||
102 | #define RPCB_getportres_sz RPCB_port_sz | |
103 | #define RPCB_setres_sz RPCB_boolean_sz | |
104 | ||
105 | /* | |
106 | * Note that RFC 1833 does not put any size restrictions on the | |
107 | * address string returned by the remote rpcbind database. | |
108 | */ | |
109 | #define RPCB_getaddrres_sz RPCB_addr_sz | |
110 | ||
a509050b | 111 | static void rpcb_getport_done(struct rpc_task *, void *); |
381ba74a | 112 | static void rpcb_map_release(void *data); |
7f4adeff | 113 | static struct rpc_program rpcb_program; |
a509050b | 114 | |
c526611d CL |
115 | static struct rpc_clnt * rpcb_local_clnt; |
116 | static struct rpc_clnt * rpcb_local_clnt4; | |
117 | ||
a509050b CL |
118 | struct rpcbind_args { |
119 | struct rpc_xprt * r_xprt; | |
120 | ||
121 | u32 r_prog; | |
122 | u32 r_vers; | |
123 | u32 r_prot; | |
124 | unsigned short r_port; | |
86d61d86 TM |
125 | const char * r_netid; |
126 | const char * r_addr; | |
127 | const char * r_owner; | |
381ba74a TM |
128 | |
129 | int r_status; | |
a509050b CL |
130 | }; |
131 | ||
132 | static struct rpc_procinfo rpcb_procedures2[]; | |
133 | static struct rpc_procinfo rpcb_procedures3[]; | |
c2e1b09f | 134 | static struct rpc_procinfo rpcb_procedures4[]; |
a509050b | 135 | |
d5b64430 | 136 | struct rpcb_info { |
fc200e79 | 137 | u32 rpc_vers; |
a509050b | 138 | struct rpc_procinfo * rpc_proc; |
d5b64430 CL |
139 | }; |
140 | ||
141 | static struct rpcb_info rpcb_next_version[]; | |
142 | static struct rpcb_info rpcb_next_version6[]; | |
a509050b | 143 | |
a509050b | 144 | static const struct rpc_call_ops rpcb_getport_ops = { |
a509050b CL |
145 | .rpc_call_done = rpcb_getport_done, |
146 | .rpc_release = rpcb_map_release, | |
147 | }; | |
148 | ||
149 | static void rpcb_wake_rpcbind_waiters(struct rpc_xprt *xprt, int status) | |
150 | { | |
151 | xprt_clear_binding(xprt); | |
152 | rpc_wake_up_status(&xprt->binding, status); | |
153 | } | |
154 | ||
381ba74a TM |
155 | static void rpcb_map_release(void *data) |
156 | { | |
157 | struct rpcbind_args *map = data; | |
158 | ||
159 | rpcb_wake_rpcbind_waiters(map->r_xprt, map->r_status); | |
160 | xprt_put(map->r_xprt); | |
ba809130 | 161 | kfree(map->r_addr); |
381ba74a TM |
162 | kfree(map); |
163 | } | |
164 | ||
cc5598b7 CL |
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), | |
169 | }; | |
170 | ||
c526611d CL |
171 | static DEFINE_MUTEX(rpcb_create_local_mutex); |
172 | ||
173 | /* | |
174 | * Returns zero on success, otherwise a negative errno value | |
175 | * is returned. | |
176 | */ | |
177 | static int rpcb_create_local(void) | |
cc5598b7 CL |
178 | { |
179 | struct rpc_create_args args = { | |
c653ce3f | 180 | .net = &init_net, |
2a76b3bf | 181 | .protocol = XPRT_TRANSPORT_TCP, |
5a462115 CL |
182 | .address = (struct sockaddr *)&rpcb_inaddr_loopback, |
183 | .addrsize = sizeof(rpcb_inaddr_loopback), | |
cc5598b7 CL |
184 | .servername = "localhost", |
185 | .program = &rpcb_program, | |
c526611d | 186 | .version = RPCBVERS_2, |
cc5598b7 CL |
187 | .authflavor = RPC_AUTH_UNIX, |
188 | .flags = RPC_CLNT_CREATE_NOPING, | |
189 | }; | |
c526611d CL |
190 | struct rpc_clnt *clnt, *clnt4; |
191 | int result = 0; | |
192 | ||
193 | if (rpcb_local_clnt) | |
194 | return result; | |
195 | ||
196 | mutex_lock(&rpcb_create_local_mutex); | |
197 | if (rpcb_local_clnt) | |
198 | goto out; | |
199 | ||
200 | clnt = rpc_create(&args); | |
201 | if (IS_ERR(clnt)) { | |
202 | dprintk("RPC: failed to create local rpcbind " | |
203 | "client (errno %ld).\n", PTR_ERR(clnt)); | |
204 | result = -PTR_ERR(clnt); | |
205 | goto out; | |
206 | } | |
cc5598b7 | 207 | |
c526611d CL |
208 | /* |
209 | * This results in an RPC ping. On systems running portmapper, | |
210 | * the v4 ping will fail. Proceed anyway, but disallow rpcb | |
211 | * v4 upcalls. | |
212 | */ | |
213 | clnt4 = rpc_bind_new_program(clnt, &rpcb_program, RPCBVERS_4); | |
214 | if (IS_ERR(clnt4)) { | |
38359352 CL |
215 | dprintk("RPC: failed to bind second program to " |
216 | "rpcbind v4 client (errno %ld).\n", | |
217 | PTR_ERR(clnt4)); | |
c526611d CL |
218 | clnt4 = NULL; |
219 | } | |
220 | ||
221 | rpcb_local_clnt = clnt; | |
222 | rpcb_local_clnt4 = clnt4; | |
223 | ||
224 | out: | |
225 | mutex_unlock(&rpcb_create_local_mutex); | |
226 | return result; | |
cc5598b7 CL |
227 | } |
228 | ||
a509050b | 229 | static struct rpc_clnt *rpcb_create(char *hostname, struct sockaddr *srvaddr, |
423d8b06 | 230 | size_t salen, int proto, u32 version) |
a509050b CL |
231 | { |
232 | struct rpc_create_args args = { | |
c653ce3f | 233 | .net = &init_net, |
a509050b CL |
234 | .protocol = proto, |
235 | .address = srvaddr, | |
9f6ad26d | 236 | .addrsize = salen, |
a509050b CL |
237 | .servername = hostname, |
238 | .program = &rpcb_program, | |
239 | .version = version, | |
240 | .authflavor = RPC_AUTH_UNIX, | |
423d8b06 CL |
241 | .flags = (RPC_CLNT_CREATE_NOPING | |
242 | RPC_CLNT_CREATE_NONPRIVPORT), | |
a509050b CL |
243 | }; |
244 | ||
d5b64430 CL |
245 | switch (srvaddr->sa_family) { |
246 | case AF_INET: | |
247 | ((struct sockaddr_in *)srvaddr)->sin_port = htons(RPCBIND_PORT); | |
248 | break; | |
249 | case AF_INET6: | |
250 | ((struct sockaddr_in6 *)srvaddr)->sin6_port = htons(RPCBIND_PORT); | |
251 | break; | |
252 | default: | |
c636b572 | 253 | return ERR_PTR(-EAFNOSUPPORT); |
d5b64430 CL |
254 | } |
255 | ||
a509050b CL |
256 | return rpc_create(&args); |
257 | } | |
258 | ||
c526611d | 259 | static int rpcb_register_call(struct rpc_clnt *clnt, struct rpc_message *msg) |
babe80eb | 260 | { |
14aeb211 | 261 | int result, error = 0; |
babe80eb | 262 | |
14aeb211 | 263 | msg->rpc_resp = &result; |
babe80eb | 264 | |
2a76b3bf | 265 | error = rpc_call_sync(clnt, msg, RPC_TASK_SOFTCONN); |
14aeb211 | 266 | if (error < 0) { |
363f724c | 267 | dprintk("RPC: failed to contact local rpcbind " |
babe80eb | 268 | "server (errno %d).\n", -error); |
14aeb211 CL |
269 | return error; |
270 | } | |
271 | ||
db820d63 | 272 | if (!result) |
14aeb211 | 273 | return -EACCES; |
14aeb211 | 274 | return 0; |
babe80eb CL |
275 | } |
276 | ||
a509050b CL |
277 | /** |
278 | * rpcb_register - set or unset a port registration with the local rpcbind svc | |
279 | * @prog: RPC program number to bind | |
280 | * @vers: RPC version number to bind | |
c2e1b09f | 281 | * @prot: transport protocol to register |
a509050b | 282 | * @port: port value to register |
14aeb211 CL |
283 | * |
284 | * Returns zero if the registration request was dispatched successfully | |
285 | * and the rpcbind daemon returned success. Otherwise, returns an errno | |
286 | * value that reflects the nature of the error (request could not be | |
287 | * dispatched, timed out, or rpcbind returned an error). | |
c2e1b09f CL |
288 | * |
289 | * RPC services invoke this function to advertise their contact | |
290 | * information via the system's rpcbind daemon. RPC services | |
291 | * invoke this function once for each [program, version, transport] | |
292 | * tuple they wish to advertise. | |
293 | * | |
294 | * Callers may also unregister RPC services that are no longer | |
295 | * available by setting the passed-in port to zero. This removes | |
296 | * all registered transports for [program, version] from the local | |
297 | * rpcbind database. | |
298 | * | |
c2e1b09f CL |
299 | * This function uses rpcbind protocol version 2 to contact the |
300 | * local rpcbind daemon. | |
301 | * | |
302 | * Registration works over both AF_INET and AF_INET6, and services | |
303 | * registered via this function are advertised as available for any | |
304 | * address. If the local rpcbind daemon is listening on AF_INET6, | |
305 | * services registered via this function will be advertised on | |
306 | * IN6ADDR_ANY (ie available for all AF_INET and AF_INET6 | |
307 | * addresses). | |
a509050b | 308 | */ |
14aeb211 | 309 | int rpcb_register(u32 prog, u32 vers, int prot, unsigned short port) |
a509050b | 310 | { |
a509050b CL |
311 | struct rpcbind_args map = { |
312 | .r_prog = prog, | |
313 | .r_vers = vers, | |
314 | .r_prot = prot, | |
315 | .r_port = port, | |
316 | }; | |
317 | struct rpc_message msg = { | |
a509050b | 318 | .rpc_argp = &map, |
a509050b | 319 | }; |
c526611d CL |
320 | int error; |
321 | ||
322 | error = rpcb_create_local(); | |
323 | if (error) | |
324 | return error; | |
a509050b CL |
325 | |
326 | dprintk("RPC: %sregistering (%u, %u, %d, %u) with local " | |
327 | "rpcbind\n", (port ? "" : "un"), | |
328 | prog, vers, prot, port); | |
329 | ||
babe80eb CL |
330 | msg.rpc_proc = &rpcb_procedures2[RPCBPROC_UNSET]; |
331 | if (port) | |
332 | msg.rpc_proc = &rpcb_procedures2[RPCBPROC_SET]; | |
a509050b | 333 | |
c526611d | 334 | return rpcb_register_call(rpcb_local_clnt, &msg); |
a509050b CL |
335 | } |
336 | ||
c2e1b09f CL |
337 | /* |
338 | * Fill in AF_INET family-specific arguments to register | |
339 | */ | |
1673d0de CL |
340 | static int rpcb_register_inet4(const struct sockaddr *sap, |
341 | struct rpc_message *msg) | |
c2e1b09f | 342 | { |
3aba4553 | 343 | const struct sockaddr_in *sin = (const struct sockaddr_in *)sap; |
c2e1b09f | 344 | struct rpcbind_args *map = msg->rpc_argp; |
3aba4553 | 345 | unsigned short port = ntohs(sin->sin_port); |
ba809130 | 346 | int result; |
c2e1b09f | 347 | |
ba809130 | 348 | map->r_addr = rpc_sockaddr2uaddr(sap); |
c2e1b09f CL |
349 | |
350 | dprintk("RPC: %sregistering [%u, %u, %s, '%s'] with " | |
351 | "local rpcbind\n", (port ? "" : "un"), | |
352 | map->r_prog, map->r_vers, | |
353 | map->r_addr, map->r_netid); | |
354 | ||
355 | msg->rpc_proc = &rpcb_procedures4[RPCBPROC_UNSET]; | |
356 | if (port) | |
357 | msg->rpc_proc = &rpcb_procedures4[RPCBPROC_SET]; | |
358 | ||
c526611d | 359 | result = rpcb_register_call(rpcb_local_clnt4, msg); |
ba809130 CL |
360 | kfree(map->r_addr); |
361 | return result; | |
c2e1b09f CL |
362 | } |
363 | ||
364 | /* | |
365 | * Fill in AF_INET6 family-specific arguments to register | |
366 | */ | |
1673d0de CL |
367 | static int rpcb_register_inet6(const struct sockaddr *sap, |
368 | struct rpc_message *msg) | |
c2e1b09f | 369 | { |
3aba4553 | 370 | const struct sockaddr_in6 *sin6 = (const struct sockaddr_in6 *)sap; |
c2e1b09f | 371 | struct rpcbind_args *map = msg->rpc_argp; |
3aba4553 | 372 | unsigned short port = ntohs(sin6->sin6_port); |
ba809130 | 373 | int result; |
c2e1b09f | 374 | |
ba809130 | 375 | map->r_addr = rpc_sockaddr2uaddr(sap); |
c2e1b09f CL |
376 | |
377 | dprintk("RPC: %sregistering [%u, %u, %s, '%s'] with " | |
378 | "local rpcbind\n", (port ? "" : "un"), | |
379 | map->r_prog, map->r_vers, | |
380 | map->r_addr, map->r_netid); | |
381 | ||
382 | msg->rpc_proc = &rpcb_procedures4[RPCBPROC_UNSET]; | |
383 | if (port) | |
384 | msg->rpc_proc = &rpcb_procedures4[RPCBPROC_SET]; | |
385 | ||
c526611d | 386 | result = rpcb_register_call(rpcb_local_clnt4, msg); |
ba809130 CL |
387 | kfree(map->r_addr); |
388 | return result; | |
c2e1b09f CL |
389 | } |
390 | ||
1673d0de CL |
391 | static int rpcb_unregister_all_protofamilies(struct rpc_message *msg) |
392 | { | |
393 | struct rpcbind_args *map = msg->rpc_argp; | |
394 | ||
395 | dprintk("RPC: unregistering [%u, %u, '%s'] with " | |
396 | "local rpcbind\n", | |
397 | map->r_prog, map->r_vers, map->r_netid); | |
398 | ||
399 | map->r_addr = ""; | |
400 | msg->rpc_proc = &rpcb_procedures4[RPCBPROC_UNSET]; | |
401 | ||
c526611d | 402 | return rpcb_register_call(rpcb_local_clnt4, msg); |
1673d0de CL |
403 | } |
404 | ||
c2e1b09f CL |
405 | /** |
406 | * rpcb_v4_register - set or unset a port registration with the local rpcbind | |
407 | * @program: RPC program number of service to (un)register | |
408 | * @version: RPC version number of service to (un)register | |
409 | * @address: address family, IP address, and port to (un)register | |
410 | * @netid: netid of transport protocol to (un)register | |
14aeb211 CL |
411 | * |
412 | * Returns zero if the registration request was dispatched successfully | |
413 | * and the rpcbind daemon returned success. Otherwise, returns an errno | |
414 | * value that reflects the nature of the error (request could not be | |
415 | * dispatched, timed out, or rpcbind returned an error). | |
c2e1b09f CL |
416 | * |
417 | * RPC services invoke this function to advertise their contact | |
418 | * information via the system's rpcbind daemon. RPC services | |
419 | * invoke this function once for each [program, version, address, | |
420 | * netid] tuple they wish to advertise. | |
421 | * | |
1673d0de CL |
422 | * Callers may also unregister RPC services that are registered at a |
423 | * specific address by setting the port number in @address to zero. | |
424 | * They may unregister all registered protocol families at once for | |
425 | * a service by passing a NULL @address argument. If @netid is "" | |
426 | * then all netids for [program, version, address] are unregistered. | |
c2e1b09f | 427 | * |
c2e1b09f CL |
428 | * This function uses rpcbind protocol version 4 to contact the |
429 | * local rpcbind daemon. The local rpcbind daemon must support | |
430 | * version 4 of the rpcbind protocol in order for these functions | |
431 | * to register a service successfully. | |
432 | * | |
433 | * Supported netids include "udp" and "tcp" for UDP and TCP over | |
434 | * IPv4, and "udp6" and "tcp6" for UDP and TCP over IPv6, | |
435 | * respectively. | |
436 | * | |
437 | * The contents of @address determine the address family and the | |
438 | * port to be registered. The usual practice is to pass INADDR_ANY | |
439 | * as the raw address, but specifying a non-zero address is also | |
440 | * supported by this API if the caller wishes to advertise an RPC | |
441 | * service on a specific network interface. | |
442 | * | |
443 | * Note that passing in INADDR_ANY does not create the same service | |
444 | * registration as IN6ADDR_ANY. The former advertises an RPC | |
445 | * service on any IPv4 address, but not on IPv6. The latter | |
446 | * advertises the service on all IPv4 and IPv6 addresses. | |
447 | */ | |
448 | int rpcb_v4_register(const u32 program, const u32 version, | |
14aeb211 | 449 | const struct sockaddr *address, const char *netid) |
c2e1b09f CL |
450 | { |
451 | struct rpcbind_args map = { | |
452 | .r_prog = program, | |
453 | .r_vers = version, | |
454 | .r_netid = netid, | |
455 | .r_owner = RPCB_OWNER_STRING, | |
456 | }; | |
457 | struct rpc_message msg = { | |
458 | .rpc_argp = &map, | |
c2e1b09f | 459 | }; |
c526611d CL |
460 | int error; |
461 | ||
462 | error = rpcb_create_local(); | |
463 | if (error) | |
464 | return error; | |
465 | if (rpcb_local_clnt4 == NULL) | |
466 | return -EPROTONOSUPPORT; | |
c2e1b09f | 467 | |
1673d0de CL |
468 | if (address == NULL) |
469 | return rpcb_unregister_all_protofamilies(&msg); | |
470 | ||
c2e1b09f CL |
471 | switch (address->sa_family) { |
472 | case AF_INET: | |
1673d0de | 473 | return rpcb_register_inet4(address, &msg); |
c2e1b09f | 474 | case AF_INET6: |
1673d0de | 475 | return rpcb_register_inet6(address, &msg); |
c2e1b09f CL |
476 | } |
477 | ||
478 | return -EAFNOSUPPORT; | |
479 | } | |
480 | ||
803a9067 | 481 | static struct rpc_task *rpcb_call_async(struct rpc_clnt *rpcb_clnt, struct rpcbind_args *map, struct rpc_procinfo *proc) |
5138fde0 TM |
482 | { |
483 | struct rpc_message msg = { | |
803a9067 | 484 | .rpc_proc = proc, |
5138fde0 | 485 | .rpc_argp = map, |
c0c077df | 486 | .rpc_resp = map, |
5138fde0 TM |
487 | }; |
488 | struct rpc_task_setup task_setup_data = { | |
489 | .rpc_client = rpcb_clnt, | |
490 | .rpc_message = &msg, | |
491 | .callback_ops = &rpcb_getport_ops, | |
492 | .callback_data = map, | |
012da158 | 493 | .flags = RPC_TASK_ASYNC | RPC_TASK_SOFTCONN, |
5138fde0 TM |
494 | }; |
495 | ||
496 | return rpc_run_task(&task_setup_data); | |
497 | } | |
498 | ||
9a4bd29f TM |
499 | /* |
500 | * In the case where rpc clients have been cloned, we want to make | |
501 | * sure that we use the program number/version etc of the actual | |
502 | * owner of the xprt. To do so, we walk back up the tree of parents | |
503 | * to find whoever created the transport and/or whoever has the | |
504 | * autobind flag set. | |
505 | */ | |
506 | static struct rpc_clnt *rpcb_find_transport_owner(struct rpc_clnt *clnt) | |
507 | { | |
508 | struct rpc_clnt *parent = clnt->cl_parent; | |
509 | ||
510 | while (parent != clnt) { | |
511 | if (parent->cl_xprt != clnt->cl_xprt) | |
512 | break; | |
513 | if (clnt->cl_autobind) | |
514 | break; | |
515 | clnt = parent; | |
516 | parent = parent->cl_parent; | |
517 | } | |
518 | return clnt; | |
519 | } | |
520 | ||
a509050b | 521 | /** |
45160d62 | 522 | * rpcb_getport_async - obtain the port for a given RPC service on a given host |
a509050b CL |
523 | * @task: task that is waiting for portmapper request |
524 | * | |
525 | * This one can be called for an ongoing RPC request, and can be used in | |
526 | * an async (rpciod) context. | |
527 | */ | |
45160d62 | 528 | void rpcb_getport_async(struct rpc_task *task) |
a509050b | 529 | { |
9a4bd29f | 530 | struct rpc_clnt *clnt; |
803a9067 | 531 | struct rpc_procinfo *proc; |
0a48f5d7 | 532 | u32 bind_version; |
9a4bd29f | 533 | struct rpc_xprt *xprt; |
a509050b CL |
534 | struct rpc_clnt *rpcb_clnt; |
535 | static struct rpcbind_args *map; | |
536 | struct rpc_task *child; | |
9f6ad26d CL |
537 | struct sockaddr_storage addr; |
538 | struct sockaddr *sap = (struct sockaddr *)&addr; | |
539 | size_t salen; | |
a509050b CL |
540 | int status; |
541 | ||
9a4bd29f TM |
542 | clnt = rpcb_find_transport_owner(task->tk_client); |
543 | xprt = clnt->cl_xprt; | |
544 | ||
45160d62 | 545 | dprintk("RPC: %5u %s(%s, %u, %u, %d)\n", |
0dc47877 | 546 | task->tk_pid, __func__, |
45160d62 | 547 | clnt->cl_server, clnt->cl_prog, clnt->cl_vers, xprt->prot); |
a509050b | 548 | |
381ba74a TM |
549 | /* Put self on the wait queue to ensure we get notified if |
550 | * some other task is already attempting to bind the port */ | |
551 | rpc_sleep_on(&xprt->binding, task, NULL); | |
552 | ||
a509050b | 553 | if (xprt_test_and_set_binding(xprt)) { |
45160d62 | 554 | dprintk("RPC: %5u %s: waiting for another binder\n", |
0dc47877 | 555 | task->tk_pid, __func__); |
381ba74a | 556 | return; |
a509050b CL |
557 | } |
558 | ||
a509050b CL |
559 | /* Someone else may have bound if we slept */ |
560 | if (xprt_bound(xprt)) { | |
561 | status = 0; | |
45160d62 | 562 | dprintk("RPC: %5u %s: already bound\n", |
0dc47877 | 563 | task->tk_pid, __func__); |
a509050b CL |
564 | goto bailout_nofree; |
565 | } | |
566 | ||
ba809130 | 567 | /* Parent transport's destination address */ |
9f6ad26d | 568 | salen = rpc_peeraddr(clnt, sap, sizeof(addr)); |
d5b64430 CL |
569 | |
570 | /* Don't ever use rpcbind v2 for AF_INET6 requests */ | |
9f6ad26d | 571 | switch (sap->sa_family) { |
d5b64430 | 572 | case AF_INET: |
803a9067 TM |
573 | proc = rpcb_next_version[xprt->bind_index].rpc_proc; |
574 | bind_version = rpcb_next_version[xprt->bind_index].rpc_vers; | |
d5b64430 CL |
575 | break; |
576 | case AF_INET6: | |
803a9067 TM |
577 | proc = rpcb_next_version6[xprt->bind_index].rpc_proc; |
578 | bind_version = rpcb_next_version6[xprt->bind_index].rpc_vers; | |
d5b64430 CL |
579 | break; |
580 | default: | |
581 | status = -EAFNOSUPPORT; | |
582 | dprintk("RPC: %5u %s: bad address family\n", | |
0dc47877 | 583 | task->tk_pid, __func__); |
d5b64430 CL |
584 | goto bailout_nofree; |
585 | } | |
803a9067 | 586 | if (proc == NULL) { |
a509050b | 587 | xprt->bind_index = 0; |
906462af | 588 | status = -EPFNOSUPPORT; |
45160d62 | 589 | dprintk("RPC: %5u %s: no more getport versions available\n", |
0dc47877 | 590 | task->tk_pid, __func__); |
a509050b CL |
591 | goto bailout_nofree; |
592 | } | |
a509050b | 593 | |
45160d62 | 594 | dprintk("RPC: %5u %s: trying rpcbind version %u\n", |
0dc47877 | 595 | task->tk_pid, __func__, bind_version); |
a509050b | 596 | |
9f6ad26d | 597 | rpcb_clnt = rpcb_create(clnt->cl_server, sap, salen, xprt->prot, |
423d8b06 | 598 | bind_version); |
143b6c40 CL |
599 | if (IS_ERR(rpcb_clnt)) { |
600 | status = PTR_ERR(rpcb_clnt); | |
601 | dprintk("RPC: %5u %s: rpcb_create failed, error %ld\n", | |
0dc47877 | 602 | task->tk_pid, __func__, PTR_ERR(rpcb_clnt)); |
143b6c40 CL |
603 | goto bailout_nofree; |
604 | } | |
605 | ||
a509050b CL |
606 | map = kzalloc(sizeof(struct rpcbind_args), GFP_ATOMIC); |
607 | if (!map) { | |
608 | status = -ENOMEM; | |
45160d62 | 609 | dprintk("RPC: %5u %s: no memory available\n", |
0dc47877 | 610 | task->tk_pid, __func__); |
96165e2b | 611 | goto bailout_release_client; |
a509050b CL |
612 | } |
613 | map->r_prog = clnt->cl_prog; | |
614 | map->r_vers = clnt->cl_vers; | |
615 | map->r_prot = xprt->prot; | |
616 | map->r_port = 0; | |
617 | map->r_xprt = xprt_get(xprt); | |
381ba74a | 618 | map->r_status = -EIO; |
a509050b | 619 | |
ba809130 CL |
620 | switch (bind_version) { |
621 | case RPCBVERS_4: | |
622 | case RPCBVERS_3: | |
623 | map->r_netid = rpc_peeraddr2str(clnt, RPC_DISPLAY_NETID); | |
624 | map->r_addr = rpc_sockaddr2uaddr(sap); | |
625 | map->r_owner = ""; | |
626 | break; | |
627 | case RPCBVERS_2: | |
628 | map->r_addr = NULL; | |
629 | break; | |
630 | default: | |
631 | BUG(); | |
632 | } | |
633 | ||
803a9067 | 634 | child = rpcb_call_async(rpcb_clnt, map, proc); |
4c402b40 | 635 | rpc_release_client(rpcb_clnt); |
a509050b | 636 | if (IS_ERR(child)) { |
0d3a34b4 | 637 | /* rpcb_map_release() has freed the arguments */ |
45160d62 | 638 | dprintk("RPC: %5u %s: rpc_run_task failed\n", |
0dc47877 | 639 | task->tk_pid, __func__); |
381ba74a | 640 | return; |
a509050b | 641 | } |
a509050b | 642 | |
9a4bd29f TM |
643 | xprt->stat.bind_count++; |
644 | rpc_put_task(child); | |
a509050b CL |
645 | return; |
646 | ||
96165e2b TM |
647 | bailout_release_client: |
648 | rpc_release_client(rpcb_clnt); | |
a509050b CL |
649 | bailout_nofree: |
650 | rpcb_wake_rpcbind_waiters(xprt, status); | |
a509050b CL |
651 | task->tk_status = status; |
652 | } | |
12444809 | 653 | EXPORT_SYMBOL_GPL(rpcb_getport_async); |
a509050b CL |
654 | |
655 | /* | |
656 | * Rpcbind child task calls this callback via tk_exit. | |
657 | */ | |
658 | static void rpcb_getport_done(struct rpc_task *child, void *data) | |
659 | { | |
660 | struct rpcbind_args *map = data; | |
661 | struct rpc_xprt *xprt = map->r_xprt; | |
662 | int status = child->tk_status; | |
663 | ||
4784cb51 CL |
664 | /* Garbage reply: retry with a lesser rpcbind version */ |
665 | if (status == -EIO) | |
666 | status = -EPROTONOSUPPORT; | |
667 | ||
a509050b CL |
668 | /* rpcbind server doesn't support this rpcbind protocol version */ |
669 | if (status == -EPROTONOSUPPORT) | |
670 | xprt->bind_index++; | |
671 | ||
672 | if (status < 0) { | |
673 | /* rpcbind server not available on remote host? */ | |
674 | xprt->ops->set_port(xprt, 0); | |
675 | } else if (map->r_port == 0) { | |
676 | /* Requested RPC service wasn't registered on remote host */ | |
677 | xprt->ops->set_port(xprt, 0); | |
678 | status = -EACCES; | |
679 | } else { | |
680 | /* Succeeded */ | |
681 | xprt->ops->set_port(xprt, map->r_port); | |
682 | xprt_set_bound(xprt); | |
683 | status = 0; | |
684 | } | |
685 | ||
686 | dprintk("RPC: %5u rpcb_getport_done(status %d, port %u)\n", | |
687 | child->tk_pid, status, map->r_port); | |
688 | ||
381ba74a | 689 | map->r_status = status; |
a509050b CL |
690 | } |
691 | ||
166b88d7 CL |
692 | /* |
693 | * XDR functions for rpcbind | |
694 | */ | |
695 | ||
6f2c2db7 CL |
696 | static int rpcb_enc_mapping(struct rpc_rqst *req, __be32 *p, |
697 | const struct rpcbind_args *rpcb) | |
698 | { | |
699 | struct rpc_task *task = req->rq_task; | |
700 | struct xdr_stream xdr; | |
701 | ||
702 | dprintk("RPC: %5u encoding PMAP_%s call (%u, %u, %d, %u)\n", | |
703 | task->tk_pid, task->tk_msg.rpc_proc->p_name, | |
704 | rpcb->r_prog, rpcb->r_vers, rpcb->r_prot, rpcb->r_port); | |
705 | ||
706 | xdr_init_encode(&xdr, &req->rq_snd_buf, p); | |
707 | ||
708 | p = xdr_reserve_space(&xdr, sizeof(__be32) * RPCB_mappingargs_sz); | |
709 | if (unlikely(p == NULL)) | |
710 | return -EIO; | |
711 | ||
712 | *p++ = htonl(rpcb->r_prog); | |
713 | *p++ = htonl(rpcb->r_vers); | |
714 | *p++ = htonl(rpcb->r_prot); | |
715 | *p = htonl(rpcb->r_port); | |
716 | ||
717 | return 0; | |
718 | } | |
719 | ||
c0c077df CL |
720 | static int rpcb_dec_getport(struct rpc_rqst *req, __be32 *p, |
721 | struct rpcbind_args *rpcb) | |
722 | { | |
723 | struct rpc_task *task = req->rq_task; | |
724 | struct xdr_stream xdr; | |
725 | unsigned long port; | |
726 | ||
727 | xdr_init_decode(&xdr, &req->rq_rcv_buf, p); | |
728 | ||
729 | rpcb->r_port = 0; | |
730 | ||
731 | p = xdr_inline_decode(&xdr, sizeof(__be32)); | |
732 | if (unlikely(p == NULL)) | |
733 | return -EIO; | |
734 | ||
735 | port = ntohl(*p); | |
736 | dprintk("RPC: %5u PMAP_%s result: %lu\n", task->tk_pid, | |
737 | task->tk_msg.rpc_proc->p_name, port); | |
4be929be | 738 | if (unlikely(port > USHRT_MAX)) |
c0c077df CL |
739 | return -EIO; |
740 | ||
741 | rpcb->r_port = port; | |
742 | return 0; | |
743 | } | |
744 | ||
7ed0ff98 CL |
745 | static int rpcb_dec_set(struct rpc_rqst *req, __be32 *p, |
746 | unsigned int *boolp) | |
747 | { | |
748 | struct rpc_task *task = req->rq_task; | |
749 | struct xdr_stream xdr; | |
750 | ||
751 | xdr_init_decode(&xdr, &req->rq_rcv_buf, p); | |
752 | ||
753 | p = xdr_inline_decode(&xdr, sizeof(__be32)); | |
754 | if (unlikely(p == NULL)) | |
755 | return -EIO; | |
756 | ||
757 | *boolp = 0; | |
758 | if (*p) | |
759 | *boolp = 1; | |
760 | ||
761 | dprintk("RPC: %5u RPCB_%s call %s\n", | |
762 | task->tk_pid, task->tk_msg.rpc_proc->p_name, | |
763 | (*boolp ? "succeeded" : "failed")); | |
764 | return 0; | |
765 | } | |
766 | ||
6f2c2db7 CL |
767 | static int encode_rpcb_string(struct xdr_stream *xdr, const char *string, |
768 | const u32 maxstrlen) | |
769 | { | |
770 | u32 len; | |
771 | __be32 *p; | |
772 | ||
773 | if (unlikely(string == NULL)) | |
774 | return -EIO; | |
775 | len = strlen(string); | |
776 | if (unlikely(len > maxstrlen)) | |
777 | return -EIO; | |
778 | ||
779 | p = xdr_reserve_space(xdr, sizeof(__be32) + len); | |
780 | if (unlikely(p == NULL)) | |
781 | return -EIO; | |
782 | xdr_encode_opaque(p, string, len); | |
783 | ||
784 | return 0; | |
785 | } | |
786 | ||
787 | static int rpcb_enc_getaddr(struct rpc_rqst *req, __be32 *p, | |
788 | const struct rpcbind_args *rpcb) | |
789 | { | |
790 | struct rpc_task *task = req->rq_task; | |
791 | struct xdr_stream xdr; | |
792 | ||
793 | dprintk("RPC: %5u encoding RPCB_%s call (%u, %u, '%s', '%s')\n", | |
794 | task->tk_pid, task->tk_msg.rpc_proc->p_name, | |
795 | rpcb->r_prog, rpcb->r_vers, | |
796 | rpcb->r_netid, rpcb->r_addr); | |
797 | ||
798 | xdr_init_encode(&xdr, &req->rq_snd_buf, p); | |
799 | ||
800 | p = xdr_reserve_space(&xdr, | |
801 | sizeof(__be32) * (RPCB_program_sz + RPCB_version_sz)); | |
802 | if (unlikely(p == NULL)) | |
803 | return -EIO; | |
804 | *p++ = htonl(rpcb->r_prog); | |
805 | *p = htonl(rpcb->r_vers); | |
806 | ||
807 | if (encode_rpcb_string(&xdr, rpcb->r_netid, RPCBIND_MAXNETIDLEN)) | |
808 | return -EIO; | |
809 | if (encode_rpcb_string(&xdr, rpcb->r_addr, RPCBIND_MAXUADDRLEN)) | |
810 | return -EIO; | |
811 | if (encode_rpcb_string(&xdr, rpcb->r_owner, RPCB_MAXOWNERLEN)) | |
812 | return -EIO; | |
813 | ||
814 | return 0; | |
815 | } | |
816 | ||
c0c077df CL |
817 | static int rpcb_dec_getaddr(struct rpc_rqst *req, __be32 *p, |
818 | struct rpcbind_args *rpcb) | |
819 | { | |
820 | struct sockaddr_storage address; | |
821 | struct sockaddr *sap = (struct sockaddr *)&address; | |
822 | struct rpc_task *task = req->rq_task; | |
823 | struct xdr_stream xdr; | |
824 | u32 len; | |
825 | ||
826 | rpcb->r_port = 0; | |
827 | ||
828 | xdr_init_decode(&xdr, &req->rq_rcv_buf, p); | |
829 | ||
830 | p = xdr_inline_decode(&xdr, sizeof(__be32)); | |
831 | if (unlikely(p == NULL)) | |
832 | goto out_fail; | |
833 | len = ntohl(*p); | |
834 | ||
835 | /* | |
836 | * If the returned universal address is a null string, | |
837 | * the requested RPC service was not registered. | |
838 | */ | |
839 | if (len == 0) { | |
840 | dprintk("RPC: %5u RPCB reply: program not registered\n", | |
841 | task->tk_pid); | |
842 | return 0; | |
843 | } | |
844 | ||
845 | if (unlikely(len > RPCBIND_MAXUADDRLEN)) | |
846 | goto out_fail; | |
847 | ||
848 | p = xdr_inline_decode(&xdr, len); | |
849 | if (unlikely(p == NULL)) | |
850 | goto out_fail; | |
851 | dprintk("RPC: %5u RPCB_%s reply: %s\n", task->tk_pid, | |
852 | task->tk_msg.rpc_proc->p_name, (char *)p); | |
853 | ||
854 | if (rpc_uaddr2sockaddr((char *)p, len, sap, sizeof(address)) == 0) | |
855 | goto out_fail; | |
856 | rpcb->r_port = rpc_get_port(sap); | |
857 | ||
858 | return 0; | |
859 | ||
860 | out_fail: | |
861 | dprintk("RPC: %5u malformed RPCB_%s reply\n", | |
862 | task->tk_pid, task->tk_msg.rpc_proc->p_name); | |
863 | return -EIO; | |
864 | } | |
865 | ||
a509050b CL |
866 | /* |
867 | * Not all rpcbind procedures described in RFC 1833 are implemented | |
868 | * since the Linux kernel RPC code requires only these. | |
869 | */ | |
f8b761ef | 870 | |
a509050b | 871 | static struct rpc_procinfo rpcb_procedures2[] = { |
f8b761ef CL |
872 | [RPCBPROC_SET] = { |
873 | .p_proc = RPCBPROC_SET, | |
874 | .p_encode = (kxdrproc_t)rpcb_enc_mapping, | |
875 | .p_decode = (kxdrproc_t)rpcb_dec_set, | |
876 | .p_arglen = RPCB_mappingargs_sz, | |
877 | .p_replen = RPCB_setres_sz, | |
878 | .p_statidx = RPCBPROC_SET, | |
879 | .p_timer = 0, | |
880 | .p_name = "SET", | |
881 | }, | |
882 | [RPCBPROC_UNSET] = { | |
883 | .p_proc = RPCBPROC_UNSET, | |
884 | .p_encode = (kxdrproc_t)rpcb_enc_mapping, | |
885 | .p_decode = (kxdrproc_t)rpcb_dec_set, | |
886 | .p_arglen = RPCB_mappingargs_sz, | |
887 | .p_replen = RPCB_setres_sz, | |
888 | .p_statidx = RPCBPROC_UNSET, | |
889 | .p_timer = 0, | |
890 | .p_name = "UNSET", | |
891 | }, | |
892 | [RPCBPROC_GETPORT] = { | |
893 | .p_proc = RPCBPROC_GETPORT, | |
894 | .p_encode = (kxdrproc_t)rpcb_enc_mapping, | |
895 | .p_decode = (kxdrproc_t)rpcb_dec_getport, | |
896 | .p_arglen = RPCB_mappingargs_sz, | |
897 | .p_replen = RPCB_getportres_sz, | |
898 | .p_statidx = RPCBPROC_GETPORT, | |
899 | .p_timer = 0, | |
900 | .p_name = "GETPORT", | |
901 | }, | |
a509050b CL |
902 | }; |
903 | ||
904 | static struct rpc_procinfo rpcb_procedures3[] = { | |
f8b761ef CL |
905 | [RPCBPROC_SET] = { |
906 | .p_proc = RPCBPROC_SET, | |
907 | .p_encode = (kxdrproc_t)rpcb_enc_getaddr, | |
908 | .p_decode = (kxdrproc_t)rpcb_dec_set, | |
909 | .p_arglen = RPCB_getaddrargs_sz, | |
910 | .p_replen = RPCB_setres_sz, | |
911 | .p_statidx = RPCBPROC_SET, | |
912 | .p_timer = 0, | |
913 | .p_name = "SET", | |
914 | }, | |
915 | [RPCBPROC_UNSET] = { | |
916 | .p_proc = RPCBPROC_UNSET, | |
917 | .p_encode = (kxdrproc_t)rpcb_enc_getaddr, | |
918 | .p_decode = (kxdrproc_t)rpcb_dec_set, | |
919 | .p_arglen = RPCB_getaddrargs_sz, | |
920 | .p_replen = RPCB_setres_sz, | |
921 | .p_statidx = RPCBPROC_UNSET, | |
922 | .p_timer = 0, | |
923 | .p_name = "UNSET", | |
924 | }, | |
925 | [RPCBPROC_GETADDR] = { | |
926 | .p_proc = RPCBPROC_GETADDR, | |
927 | .p_encode = (kxdrproc_t)rpcb_enc_getaddr, | |
928 | .p_decode = (kxdrproc_t)rpcb_dec_getaddr, | |
929 | .p_arglen = RPCB_getaddrargs_sz, | |
930 | .p_replen = RPCB_getaddrres_sz, | |
931 | .p_statidx = RPCBPROC_GETADDR, | |
932 | .p_timer = 0, | |
933 | .p_name = "GETADDR", | |
934 | }, | |
a509050b CL |
935 | }; |
936 | ||
937 | static struct rpc_procinfo rpcb_procedures4[] = { | |
f8b761ef CL |
938 | [RPCBPROC_SET] = { |
939 | .p_proc = RPCBPROC_SET, | |
940 | .p_encode = (kxdrproc_t)rpcb_enc_getaddr, | |
941 | .p_decode = (kxdrproc_t)rpcb_dec_set, | |
942 | .p_arglen = RPCB_getaddrargs_sz, | |
943 | .p_replen = RPCB_setres_sz, | |
944 | .p_statidx = RPCBPROC_SET, | |
945 | .p_timer = 0, | |
946 | .p_name = "SET", | |
947 | }, | |
948 | [RPCBPROC_UNSET] = { | |
949 | .p_proc = RPCBPROC_UNSET, | |
950 | .p_encode = (kxdrproc_t)rpcb_enc_getaddr, | |
951 | .p_decode = (kxdrproc_t)rpcb_dec_set, | |
952 | .p_arglen = RPCB_getaddrargs_sz, | |
953 | .p_replen = RPCB_setres_sz, | |
954 | .p_statidx = RPCBPROC_UNSET, | |
955 | .p_timer = 0, | |
956 | .p_name = "UNSET", | |
957 | }, | |
958 | [RPCBPROC_GETADDR] = { | |
959 | .p_proc = RPCBPROC_GETADDR, | |
960 | .p_encode = (kxdrproc_t)rpcb_enc_getaddr, | |
961 | .p_decode = (kxdrproc_t)rpcb_dec_getaddr, | |
962 | .p_arglen = RPCB_getaddrargs_sz, | |
963 | .p_replen = RPCB_getaddrres_sz, | |
964 | .p_statidx = RPCBPROC_GETADDR, | |
965 | .p_timer = 0, | |
966 | .p_name = "GETADDR", | |
967 | }, | |
a509050b CL |
968 | }; |
969 | ||
970 | static struct rpcb_info rpcb_next_version[] = { | |
fc200e79 CL |
971 | { |
972 | .rpc_vers = RPCBVERS_2, | |
973 | .rpc_proc = &rpcb_procedures2[RPCBPROC_GETPORT], | |
974 | }, | |
975 | { | |
976 | .rpc_proc = NULL, | |
977 | }, | |
a509050b CL |
978 | }; |
979 | ||
d5b64430 | 980 | static struct rpcb_info rpcb_next_version6[] = { |
fc200e79 CL |
981 | { |
982 | .rpc_vers = RPCBVERS_4, | |
8842413a | 983 | .rpc_proc = &rpcb_procedures4[RPCBPROC_GETADDR], |
fc200e79 CL |
984 | }, |
985 | { | |
986 | .rpc_vers = RPCBVERS_3, | |
987 | .rpc_proc = &rpcb_procedures3[RPCBPROC_GETADDR], | |
988 | }, | |
fc200e79 CL |
989 | { |
990 | .rpc_proc = NULL, | |
991 | }, | |
d5b64430 CL |
992 | }; |
993 | ||
a509050b | 994 | static struct rpc_version rpcb_version2 = { |
fc200e79 | 995 | .number = RPCBVERS_2, |
a509050b CL |
996 | .nrprocs = RPCB_HIGHPROC_2, |
997 | .procs = rpcb_procedures2 | |
998 | }; | |
999 | ||
1000 | static struct rpc_version rpcb_version3 = { | |
fc200e79 | 1001 | .number = RPCBVERS_3, |
a509050b CL |
1002 | .nrprocs = RPCB_HIGHPROC_3, |
1003 | .procs = rpcb_procedures3 | |
1004 | }; | |
1005 | ||
1006 | static struct rpc_version rpcb_version4 = { | |
fc200e79 | 1007 | .number = RPCBVERS_4, |
a509050b CL |
1008 | .nrprocs = RPCB_HIGHPROC_4, |
1009 | .procs = rpcb_procedures4 | |
1010 | }; | |
1011 | ||
1012 | static struct rpc_version *rpcb_version[] = { | |
1013 | NULL, | |
1014 | NULL, | |
1015 | &rpcb_version2, | |
1016 | &rpcb_version3, | |
1017 | &rpcb_version4 | |
1018 | }; | |
1019 | ||
1020 | static struct rpc_stat rpcb_stats; | |
1021 | ||
7f4adeff | 1022 | static struct rpc_program rpcb_program = { |
a509050b CL |
1023 | .name = "rpcbind", |
1024 | .number = RPCBIND_PROGRAM, | |
1025 | .nrvers = ARRAY_SIZE(rpcb_version), | |
1026 | .version = rpcb_version, | |
1027 | .stats = &rpcb_stats, | |
1028 | }; | |
c526611d CL |
1029 | |
1030 | /** | |
1031 | * cleanup_rpcb_clnt - remove xprtsock's sysctls, unregister | |
1032 | * | |
1033 | */ | |
1034 | void cleanup_rpcb_clnt(void) | |
1035 | { | |
1036 | if (rpcb_local_clnt4) | |
1037 | rpc_shutdown_client(rpcb_local_clnt4); | |
1038 | if (rpcb_local_clnt) | |
1039 | rpc_shutdown_client(rpcb_local_clnt); | |
1040 | } |