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