Commit | Line | Data |
---|---|---|
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> | |
7402ab19 | 19 | #include <linux/un.h> |
d5b64430 CL |
20 | #include <linux/in.h> |
21 | #include <linux/in6.h> | |
a509050b CL |
22 | #include <linux/kernel.h> |
23 | #include <linux/errno.h> | |
c526611d | 24 | #include <linux/mutex.h> |
5a0e3ad6 | 25 | #include <linux/slab.h> |
9d548b9c | 26 | #include <net/ipv6.h> |
a509050b CL |
27 | |
28 | #include <linux/sunrpc/clnt.h> | |
29 | #include <linux/sunrpc/sched.h> | |
0896a725 | 30 | #include <linux/sunrpc/xprtsock.h> |
a509050b CL |
31 | |
32 | #ifdef RPC_DEBUG | |
33 | # define RPCDBG_FACILITY RPCDBG_BIND | |
34 | #endif | |
35 | ||
7402ab19 CL |
36 | #define RPCBIND_SOCK_PATHNAME "/var/run/rpcbind.sock" |
37 | ||
a509050b CL |
38 | #define RPCBIND_PROGRAM (100000u) |
39 | #define RPCBIND_PORT (111u) | |
40 | ||
fc200e79 CL |
41 | #define RPCBVERS_2 (2u) |
42 | #define RPCBVERS_3 (3u) | |
43 | #define RPCBVERS_4 (4u) | |
44 | ||
a509050b CL |
45 | enum { |
46 | RPCBPROC_NULL, | |
47 | RPCBPROC_SET, | |
48 | RPCBPROC_UNSET, | |
49 | RPCBPROC_GETPORT, | |
50 | RPCBPROC_GETADDR = 3, /* alias for GETPORT */ | |
51 | RPCBPROC_DUMP, | |
52 | RPCBPROC_CALLIT, | |
53 | RPCBPROC_BCAST = 5, /* alias for CALLIT */ | |
54 | RPCBPROC_GETTIME, | |
55 | RPCBPROC_UADDR2TADDR, | |
56 | RPCBPROC_TADDR2UADDR, | |
57 | RPCBPROC_GETVERSADDR, | |
58 | RPCBPROC_INDIRECT, | |
59 | RPCBPROC_GETADDRLIST, | |
60 | RPCBPROC_GETSTAT, | |
61 | }; | |
62 | ||
a509050b CL |
63 | /* |
64 | * r_owner | |
65 | * | |
66 | * The "owner" is allowed to unset a service in the rpcbind database. | |
126e4bc3 CL |
67 | * |
68 | * For AF_LOCAL SET/UNSET requests, rpcbind treats this string as a | |
69 | * UID which it maps to a local user name via a password lookup. | |
70 | * In all other cases it is ignored. | |
71 | * | |
72 | * For SET/UNSET requests, user space provides a value, even for | |
73 | * network requests, and GETADDR uses an empty string. We follow | |
74 | * those precedents here. | |
a509050b | 75 | */ |
126e4bc3 | 76 | #define RPCB_OWNER_STRING "0" |
a509050b CL |
77 | #define RPCB_MAXOWNERLEN sizeof(RPCB_OWNER_STRING) |
78 | ||
0b10bf5e CL |
79 | /* |
80 | * XDR data type sizes | |
81 | */ | |
82 | #define RPCB_program_sz (1) | |
83 | #define RPCB_version_sz (1) | |
84 | #define RPCB_protocol_sz (1) | |
85 | #define RPCB_port_sz (1) | |
86 | #define RPCB_boolean_sz (1) | |
87 | ||
88 | #define RPCB_netid_sz (1 + XDR_QUADLEN(RPCBIND_MAXNETIDLEN)) | |
89 | #define RPCB_addr_sz (1 + XDR_QUADLEN(RPCBIND_MAXUADDRLEN)) | |
90 | #define RPCB_ownerstring_sz (1 + XDR_QUADLEN(RPCB_MAXOWNERLEN)) | |
91 | ||
92 | /* | |
93 | * XDR argument and result sizes | |
94 | */ | |
95 | #define RPCB_mappingargs_sz (RPCB_program_sz + RPCB_version_sz + \ | |
96 | RPCB_protocol_sz + RPCB_port_sz) | |
97 | #define RPCB_getaddrargs_sz (RPCB_program_sz + RPCB_version_sz + \ | |
98 | RPCB_netid_sz + RPCB_addr_sz + \ | |
99 | RPCB_ownerstring_sz) | |
100 | ||
101 | #define RPCB_getportres_sz RPCB_port_sz | |
102 | #define RPCB_setres_sz RPCB_boolean_sz | |
103 | ||
104 | /* | |
105 | * Note that RFC 1833 does not put any size restrictions on the | |
106 | * address string returned by the remote rpcbind database. | |
107 | */ | |
108 | #define RPCB_getaddrres_sz RPCB_addr_sz | |
109 | ||
a509050b | 110 | static void rpcb_getport_done(struct rpc_task *, void *); |
381ba74a | 111 | static void rpcb_map_release(void *data); |
7f4adeff | 112 | static struct rpc_program rpcb_program; |
a509050b | 113 | |
c526611d CL |
114 | static struct rpc_clnt * rpcb_local_clnt; |
115 | static struct rpc_clnt * rpcb_local_clnt4; | |
116 | ||
a509050b CL |
117 | struct rpcbind_args { |
118 | struct rpc_xprt * r_xprt; | |
119 | ||
120 | u32 r_prog; | |
121 | u32 r_vers; | |
122 | u32 r_prot; | |
123 | unsigned short r_port; | |
86d61d86 TM |
124 | const char * r_netid; |
125 | const char * r_addr; | |
126 | const char * r_owner; | |
381ba74a TM |
127 | |
128 | int r_status; | |
a509050b CL |
129 | }; |
130 | ||
131 | static struct rpc_procinfo rpcb_procedures2[]; | |
132 | static struct rpc_procinfo rpcb_procedures3[]; | |
c2e1b09f | 133 | static struct rpc_procinfo rpcb_procedures4[]; |
a509050b | 134 | |
d5b64430 | 135 | struct rpcb_info { |
fc200e79 | 136 | u32 rpc_vers; |
a509050b | 137 | struct rpc_procinfo * rpc_proc; |
d5b64430 CL |
138 | }; |
139 | ||
140 | static struct rpcb_info rpcb_next_version[]; | |
141 | static struct rpcb_info rpcb_next_version6[]; | |
a509050b | 142 | |
a509050b | 143 | static const struct rpc_call_ops rpcb_getport_ops = { |
a509050b CL |
144 | .rpc_call_done = rpcb_getport_done, |
145 | .rpc_release = rpcb_map_release, | |
146 | }; | |
147 | ||
148 | static void rpcb_wake_rpcbind_waiters(struct rpc_xprt *xprt, int status) | |
149 | { | |
150 | xprt_clear_binding(xprt); | |
151 | rpc_wake_up_status(&xprt->binding, status); | |
152 | } | |
153 | ||
381ba74a TM |
154 | static void rpcb_map_release(void *data) |
155 | { | |
156 | struct rpcbind_args *map = data; | |
157 | ||
158 | rpcb_wake_rpcbind_waiters(map->r_xprt, map->r_status); | |
159 | xprt_put(map->r_xprt); | |
ba809130 | 160 | kfree(map->r_addr); |
381ba74a TM |
161 | kfree(map); |
162 | } | |
163 | ||
7402ab19 CL |
164 | /* |
165 | * Returns zero on success, otherwise a negative errno value | |
166 | * is returned. | |
167 | */ | |
168 | static int rpcb_create_local_unix(void) | |
169 | { | |
170 | static const struct sockaddr_un rpcb_localaddr_rpcbind = { | |
171 | .sun_family = AF_LOCAL, | |
172 | .sun_path = RPCBIND_SOCK_PATHNAME, | |
173 | }; | |
174 | struct rpc_create_args args = { | |
175 | .net = &init_net, | |
176 | .protocol = XPRT_TRANSPORT_LOCAL, | |
177 | .address = (struct sockaddr *)&rpcb_localaddr_rpcbind, | |
178 | .addrsize = sizeof(rpcb_localaddr_rpcbind), | |
179 | .servername = "localhost", | |
180 | .program = &rpcb_program, | |
181 | .version = RPCBVERS_2, | |
182 | .authflavor = RPC_AUTH_NULL, | |
183 | }; | |
184 | struct rpc_clnt *clnt, *clnt4; | |
185 | int result = 0; | |
186 | ||
187 | /* | |
188 | * Because we requested an RPC PING at transport creation time, | |
189 | * this works only if the user space portmapper is rpcbind, and | |
190 | * it's listening on AF_LOCAL on the named socket. | |
191 | */ | |
192 | clnt = rpc_create(&args); | |
193 | if (IS_ERR(clnt)) { | |
194 | dprintk("RPC: failed to create AF_LOCAL rpcbind " | |
195 | "client (errno %ld).\n", PTR_ERR(clnt)); | |
196 | result = -PTR_ERR(clnt); | |
197 | goto out; | |
198 | } | |
199 | ||
200 | clnt4 = rpc_bind_new_program(clnt, &rpcb_program, RPCBVERS_4); | |
201 | if (IS_ERR(clnt4)) { | |
202 | dprintk("RPC: failed to bind second program to " | |
203 | "rpcbind v4 client (errno %ld).\n", | |
204 | PTR_ERR(clnt4)); | |
205 | clnt4 = NULL; | |
206 | } | |
207 | ||
208 | /* Protected by rpcb_create_local_mutex */ | |
209 | rpcb_local_clnt = clnt; | |
210 | rpcb_local_clnt4 = clnt4; | |
cc5598b7 | 211 | |
7402ab19 CL |
212 | out: |
213 | return result; | |
214 | } | |
c526611d CL |
215 | |
216 | /* | |
217 | * Returns zero on success, otherwise a negative errno value | |
218 | * is returned. | |
219 | */ | |
7402ab19 | 220 | static int rpcb_create_local_net(void) |
cc5598b7 | 221 | { |
7402ab19 CL |
222 | static const struct sockaddr_in rpcb_inaddr_loopback = { |
223 | .sin_family = AF_INET, | |
224 | .sin_addr.s_addr = htonl(INADDR_LOOPBACK), | |
225 | .sin_port = htons(RPCBIND_PORT), | |
226 | }; | |
cc5598b7 | 227 | struct rpc_create_args args = { |
c653ce3f | 228 | .net = &init_net, |
2a76b3bf | 229 | .protocol = XPRT_TRANSPORT_TCP, |
5a462115 CL |
230 | .address = (struct sockaddr *)&rpcb_inaddr_loopback, |
231 | .addrsize = sizeof(rpcb_inaddr_loopback), | |
cc5598b7 CL |
232 | .servername = "localhost", |
233 | .program = &rpcb_program, | |
c526611d | 234 | .version = RPCBVERS_2, |
cc5598b7 CL |
235 | .authflavor = RPC_AUTH_UNIX, |
236 | .flags = RPC_CLNT_CREATE_NOPING, | |
237 | }; | |
c526611d CL |
238 | struct rpc_clnt *clnt, *clnt4; |
239 | int result = 0; | |
240 | ||
c526611d CL |
241 | clnt = rpc_create(&args); |
242 | if (IS_ERR(clnt)) { | |
243 | dprintk("RPC: failed to create local rpcbind " | |
244 | "client (errno %ld).\n", PTR_ERR(clnt)); | |
245 | result = -PTR_ERR(clnt); | |
246 | goto out; | |
247 | } | |
cc5598b7 | 248 | |
c526611d CL |
249 | /* |
250 | * This results in an RPC ping. On systems running portmapper, | |
251 | * the v4 ping will fail. Proceed anyway, but disallow rpcb | |
252 | * v4 upcalls. | |
253 | */ | |
254 | clnt4 = rpc_bind_new_program(clnt, &rpcb_program, RPCBVERS_4); | |
255 | if (IS_ERR(clnt4)) { | |
38359352 CL |
256 | dprintk("RPC: failed to bind second program to " |
257 | "rpcbind v4 client (errno %ld).\n", | |
258 | PTR_ERR(clnt4)); | |
c526611d CL |
259 | clnt4 = NULL; |
260 | } | |
261 | ||
7402ab19 | 262 | /* Protected by rpcb_create_local_mutex */ |
c526611d CL |
263 | rpcb_local_clnt = clnt; |
264 | rpcb_local_clnt4 = clnt4; | |
265 | ||
7402ab19 CL |
266 | out: |
267 | return result; | |
268 | } | |
269 | ||
270 | /* | |
271 | * Returns zero on success, otherwise a negative errno value | |
272 | * is returned. | |
273 | */ | |
274 | static int rpcb_create_local(void) | |
275 | { | |
276 | static DEFINE_MUTEX(rpcb_create_local_mutex); | |
277 | int result = 0; | |
278 | ||
279 | if (rpcb_local_clnt) | |
280 | return result; | |
281 | ||
282 | mutex_lock(&rpcb_create_local_mutex); | |
283 | if (rpcb_local_clnt) | |
284 | goto out; | |
285 | ||
286 | if (rpcb_create_local_unix() != 0) | |
287 | result = rpcb_create_local_net(); | |
288 | ||
c526611d CL |
289 | out: |
290 | mutex_unlock(&rpcb_create_local_mutex); | |
291 | return result; | |
cc5598b7 CL |
292 | } |
293 | ||
a509050b | 294 | static struct rpc_clnt *rpcb_create(char *hostname, struct sockaddr *srvaddr, |
423d8b06 | 295 | size_t salen, int proto, u32 version) |
a509050b CL |
296 | { |
297 | struct rpc_create_args args = { | |
c653ce3f | 298 | .net = &init_net, |
a509050b CL |
299 | .protocol = proto, |
300 | .address = srvaddr, | |
9f6ad26d | 301 | .addrsize = salen, |
a509050b CL |
302 | .servername = hostname, |
303 | .program = &rpcb_program, | |
304 | .version = version, | |
305 | .authflavor = RPC_AUTH_UNIX, | |
423d8b06 CL |
306 | .flags = (RPC_CLNT_CREATE_NOPING | |
307 | RPC_CLNT_CREATE_NONPRIVPORT), | |
a509050b CL |
308 | }; |
309 | ||
d5b64430 CL |
310 | switch (srvaddr->sa_family) { |
311 | case AF_INET: | |
312 | ((struct sockaddr_in *)srvaddr)->sin_port = htons(RPCBIND_PORT); | |
313 | break; | |
314 | case AF_INET6: | |
315 | ((struct sockaddr_in6 *)srvaddr)->sin6_port = htons(RPCBIND_PORT); | |
316 | break; | |
317 | default: | |
c636b572 | 318 | return ERR_PTR(-EAFNOSUPPORT); |
d5b64430 CL |
319 | } |
320 | ||
a509050b CL |
321 | return rpc_create(&args); |
322 | } | |
323 | ||
c526611d | 324 | static int rpcb_register_call(struct rpc_clnt *clnt, struct rpc_message *msg) |
babe80eb | 325 | { |
14aeb211 | 326 | int result, error = 0; |
babe80eb | 327 | |
14aeb211 | 328 | msg->rpc_resp = &result; |
babe80eb | 329 | |
2a76b3bf | 330 | error = rpc_call_sync(clnt, msg, RPC_TASK_SOFTCONN); |
14aeb211 | 331 | if (error < 0) { |
363f724c | 332 | dprintk("RPC: failed to contact local rpcbind " |
babe80eb | 333 | "server (errno %d).\n", -error); |
14aeb211 CL |
334 | return error; |
335 | } | |
336 | ||
db820d63 | 337 | if (!result) |
14aeb211 | 338 | return -EACCES; |
14aeb211 | 339 | return 0; |
babe80eb CL |
340 | } |
341 | ||
a509050b CL |
342 | /** |
343 | * rpcb_register - set or unset a port registration with the local rpcbind svc | |
344 | * @prog: RPC program number to bind | |
345 | * @vers: RPC version number to bind | |
c2e1b09f | 346 | * @prot: transport protocol to register |
a509050b | 347 | * @port: port value to register |
14aeb211 CL |
348 | * |
349 | * Returns zero if the registration request was dispatched successfully | |
350 | * and the rpcbind daemon returned success. Otherwise, returns an errno | |
351 | * value that reflects the nature of the error (request could not be | |
352 | * dispatched, timed out, or rpcbind returned an error). | |
c2e1b09f CL |
353 | * |
354 | * RPC services invoke this function to advertise their contact | |
355 | * information via the system's rpcbind daemon. RPC services | |
356 | * invoke this function once for each [program, version, transport] | |
357 | * tuple they wish to advertise. | |
358 | * | |
359 | * Callers may also unregister RPC services that are no longer | |
360 | * available by setting the passed-in port to zero. This removes | |
361 | * all registered transports for [program, version] from the local | |
362 | * rpcbind database. | |
363 | * | |
c2e1b09f CL |
364 | * This function uses rpcbind protocol version 2 to contact the |
365 | * local rpcbind daemon. | |
366 | * | |
367 | * Registration works over both AF_INET and AF_INET6, and services | |
368 | * registered via this function are advertised as available for any | |
369 | * address. If the local rpcbind daemon is listening on AF_INET6, | |
370 | * services registered via this function will be advertised on | |
371 | * IN6ADDR_ANY (ie available for all AF_INET and AF_INET6 | |
372 | * addresses). | |
a509050b | 373 | */ |
14aeb211 | 374 | int rpcb_register(u32 prog, u32 vers, int prot, unsigned short port) |
a509050b | 375 | { |
a509050b CL |
376 | struct rpcbind_args map = { |
377 | .r_prog = prog, | |
378 | .r_vers = vers, | |
379 | .r_prot = prot, | |
380 | .r_port = port, | |
381 | }; | |
382 | struct rpc_message msg = { | |
a509050b | 383 | .rpc_argp = &map, |
a509050b | 384 | }; |
c526611d CL |
385 | int error; |
386 | ||
387 | error = rpcb_create_local(); | |
388 | if (error) | |
389 | return error; | |
a509050b CL |
390 | |
391 | dprintk("RPC: %sregistering (%u, %u, %d, %u) with local " | |
392 | "rpcbind\n", (port ? "" : "un"), | |
393 | prog, vers, prot, port); | |
394 | ||
babe80eb CL |
395 | msg.rpc_proc = &rpcb_procedures2[RPCBPROC_UNSET]; |
396 | if (port) | |
397 | msg.rpc_proc = &rpcb_procedures2[RPCBPROC_SET]; | |
a509050b | 398 | |
c526611d | 399 | return rpcb_register_call(rpcb_local_clnt, &msg); |
a509050b CL |
400 | } |
401 | ||
c2e1b09f CL |
402 | /* |
403 | * Fill in AF_INET family-specific arguments to register | |
404 | */ | |
1673d0de CL |
405 | static int rpcb_register_inet4(const struct sockaddr *sap, |
406 | struct rpc_message *msg) | |
c2e1b09f | 407 | { |
3aba4553 | 408 | const struct sockaddr_in *sin = (const struct sockaddr_in *)sap; |
c2e1b09f | 409 | struct rpcbind_args *map = msg->rpc_argp; |
3aba4553 | 410 | unsigned short port = ntohs(sin->sin_port); |
ba809130 | 411 | int result; |
c2e1b09f | 412 | |
ba809130 | 413 | map->r_addr = rpc_sockaddr2uaddr(sap); |
c2e1b09f CL |
414 | |
415 | dprintk("RPC: %sregistering [%u, %u, %s, '%s'] with " | |
416 | "local rpcbind\n", (port ? "" : "un"), | |
417 | map->r_prog, map->r_vers, | |
418 | map->r_addr, map->r_netid); | |
419 | ||
420 | msg->rpc_proc = &rpcb_procedures4[RPCBPROC_UNSET]; | |
421 | if (port) | |
422 | msg->rpc_proc = &rpcb_procedures4[RPCBPROC_SET]; | |
423 | ||
c526611d | 424 | result = rpcb_register_call(rpcb_local_clnt4, msg); |
ba809130 CL |
425 | kfree(map->r_addr); |
426 | return result; | |
c2e1b09f CL |
427 | } |
428 | ||
429 | /* | |
430 | * Fill in AF_INET6 family-specific arguments to register | |
431 | */ | |
1673d0de CL |
432 | static int rpcb_register_inet6(const struct sockaddr *sap, |
433 | struct rpc_message *msg) | |
c2e1b09f | 434 | { |
3aba4553 | 435 | const struct sockaddr_in6 *sin6 = (const struct sockaddr_in6 *)sap; |
c2e1b09f | 436 | struct rpcbind_args *map = msg->rpc_argp; |
3aba4553 | 437 | unsigned short port = ntohs(sin6->sin6_port); |
ba809130 | 438 | int result; |
c2e1b09f | 439 | |
ba809130 | 440 | map->r_addr = rpc_sockaddr2uaddr(sap); |
c2e1b09f CL |
441 | |
442 | dprintk("RPC: %sregistering [%u, %u, %s, '%s'] with " | |
443 | "local rpcbind\n", (port ? "" : "un"), | |
444 | map->r_prog, map->r_vers, | |
445 | map->r_addr, map->r_netid); | |
446 | ||
447 | msg->rpc_proc = &rpcb_procedures4[RPCBPROC_UNSET]; | |
448 | if (port) | |
449 | msg->rpc_proc = &rpcb_procedures4[RPCBPROC_SET]; | |
450 | ||
c526611d | 451 | result = rpcb_register_call(rpcb_local_clnt4, msg); |
ba809130 CL |
452 | kfree(map->r_addr); |
453 | return result; | |
c2e1b09f CL |
454 | } |
455 | ||
1673d0de CL |
456 | static int rpcb_unregister_all_protofamilies(struct rpc_message *msg) |
457 | { | |
458 | struct rpcbind_args *map = msg->rpc_argp; | |
459 | ||
460 | dprintk("RPC: unregistering [%u, %u, '%s'] with " | |
461 | "local rpcbind\n", | |
462 | map->r_prog, map->r_vers, map->r_netid); | |
463 | ||
464 | map->r_addr = ""; | |
465 | msg->rpc_proc = &rpcb_procedures4[RPCBPROC_UNSET]; | |
466 | ||
c526611d | 467 | return rpcb_register_call(rpcb_local_clnt4, msg); |
1673d0de CL |
468 | } |
469 | ||
c2e1b09f CL |
470 | /** |
471 | * rpcb_v4_register - set or unset a port registration with the local rpcbind | |
472 | * @program: RPC program number of service to (un)register | |
473 | * @version: RPC version number of service to (un)register | |
474 | * @address: address family, IP address, and port to (un)register | |
475 | * @netid: netid of transport protocol to (un)register | |
14aeb211 CL |
476 | * |
477 | * Returns zero if the registration request was dispatched successfully | |
478 | * and the rpcbind daemon returned success. Otherwise, returns an errno | |
479 | * value that reflects the nature of the error (request could not be | |
480 | * dispatched, timed out, or rpcbind returned an error). | |
c2e1b09f CL |
481 | * |
482 | * RPC services invoke this function to advertise their contact | |
483 | * information via the system's rpcbind daemon. RPC services | |
484 | * invoke this function once for each [program, version, address, | |
485 | * netid] tuple they wish to advertise. | |
486 | * | |
1673d0de CL |
487 | * Callers may also unregister RPC services that are registered at a |
488 | * specific address by setting the port number in @address to zero. | |
489 | * They may unregister all registered protocol families at once for | |
490 | * a service by passing a NULL @address argument. If @netid is "" | |
491 | * then all netids for [program, version, address] are unregistered. | |
c2e1b09f | 492 | * |
c2e1b09f CL |
493 | * This function uses rpcbind protocol version 4 to contact the |
494 | * local rpcbind daemon. The local rpcbind daemon must support | |
495 | * version 4 of the rpcbind protocol in order for these functions | |
496 | * to register a service successfully. | |
497 | * | |
498 | * Supported netids include "udp" and "tcp" for UDP and TCP over | |
499 | * IPv4, and "udp6" and "tcp6" for UDP and TCP over IPv6, | |
500 | * respectively. | |
501 | * | |
502 | * The contents of @address determine the address family and the | |
503 | * port to be registered. The usual practice is to pass INADDR_ANY | |
504 | * as the raw address, but specifying a non-zero address is also | |
505 | * supported by this API if the caller wishes to advertise an RPC | |
506 | * service on a specific network interface. | |
507 | * | |
508 | * Note that passing in INADDR_ANY does not create the same service | |
509 | * registration as IN6ADDR_ANY. The former advertises an RPC | |
510 | * service on any IPv4 address, but not on IPv6. The latter | |
511 | * advertises the service on all IPv4 and IPv6 addresses. | |
512 | */ | |
513 | int rpcb_v4_register(const u32 program, const u32 version, | |
14aeb211 | 514 | const struct sockaddr *address, const char *netid) |
c2e1b09f CL |
515 | { |
516 | struct rpcbind_args map = { | |
517 | .r_prog = program, | |
518 | .r_vers = version, | |
519 | .r_netid = netid, | |
520 | .r_owner = RPCB_OWNER_STRING, | |
521 | }; | |
522 | struct rpc_message msg = { | |
523 | .rpc_argp = &map, | |
c2e1b09f | 524 | }; |
c526611d CL |
525 | int error; |
526 | ||
527 | error = rpcb_create_local(); | |
528 | if (error) | |
529 | return error; | |
530 | if (rpcb_local_clnt4 == NULL) | |
531 | return -EPROTONOSUPPORT; | |
c2e1b09f | 532 | |
1673d0de CL |
533 | if (address == NULL) |
534 | return rpcb_unregister_all_protofamilies(&msg); | |
535 | ||
c2e1b09f CL |
536 | switch (address->sa_family) { |
537 | case AF_INET: | |
1673d0de | 538 | return rpcb_register_inet4(address, &msg); |
c2e1b09f | 539 | case AF_INET6: |
1673d0de | 540 | return rpcb_register_inet6(address, &msg); |
c2e1b09f CL |
541 | } |
542 | ||
543 | return -EAFNOSUPPORT; | |
544 | } | |
545 | ||
803a9067 | 546 | static struct rpc_task *rpcb_call_async(struct rpc_clnt *rpcb_clnt, struct rpcbind_args *map, struct rpc_procinfo *proc) |
5138fde0 TM |
547 | { |
548 | struct rpc_message msg = { | |
803a9067 | 549 | .rpc_proc = proc, |
5138fde0 | 550 | .rpc_argp = map, |
c0c077df | 551 | .rpc_resp = map, |
5138fde0 TM |
552 | }; |
553 | struct rpc_task_setup task_setup_data = { | |
554 | .rpc_client = rpcb_clnt, | |
555 | .rpc_message = &msg, | |
556 | .callback_ops = &rpcb_getport_ops, | |
557 | .callback_data = map, | |
012da158 | 558 | .flags = RPC_TASK_ASYNC | RPC_TASK_SOFTCONN, |
5138fde0 TM |
559 | }; |
560 | ||
561 | return rpc_run_task(&task_setup_data); | |
562 | } | |
563 | ||
9a4bd29f TM |
564 | /* |
565 | * In the case where rpc clients have been cloned, we want to make | |
566 | * sure that we use the program number/version etc of the actual | |
567 | * owner of the xprt. To do so, we walk back up the tree of parents | |
568 | * to find whoever created the transport and/or whoever has the | |
569 | * autobind flag set. | |
570 | */ | |
571 | static struct rpc_clnt *rpcb_find_transport_owner(struct rpc_clnt *clnt) | |
572 | { | |
573 | struct rpc_clnt *parent = clnt->cl_parent; | |
574 | ||
575 | while (parent != clnt) { | |
576 | if (parent->cl_xprt != clnt->cl_xprt) | |
577 | break; | |
578 | if (clnt->cl_autobind) | |
579 | break; | |
580 | clnt = parent; | |
581 | parent = parent->cl_parent; | |
582 | } | |
583 | return clnt; | |
584 | } | |
585 | ||
a509050b | 586 | /** |
45160d62 | 587 | * rpcb_getport_async - obtain the port for a given RPC service on a given host |
a509050b CL |
588 | * @task: task that is waiting for portmapper request |
589 | * | |
590 | * This one can be called for an ongoing RPC request, and can be used in | |
591 | * an async (rpciod) context. | |
592 | */ | |
45160d62 | 593 | void rpcb_getport_async(struct rpc_task *task) |
a509050b | 594 | { |
9a4bd29f | 595 | struct rpc_clnt *clnt; |
803a9067 | 596 | struct rpc_procinfo *proc; |
0a48f5d7 | 597 | u32 bind_version; |
9a4bd29f | 598 | struct rpc_xprt *xprt; |
a509050b CL |
599 | struct rpc_clnt *rpcb_clnt; |
600 | static struct rpcbind_args *map; | |
601 | struct rpc_task *child; | |
9f6ad26d CL |
602 | struct sockaddr_storage addr; |
603 | struct sockaddr *sap = (struct sockaddr *)&addr; | |
604 | size_t salen; | |
a509050b CL |
605 | int status; |
606 | ||
9a4bd29f TM |
607 | clnt = rpcb_find_transport_owner(task->tk_client); |
608 | xprt = clnt->cl_xprt; | |
609 | ||
45160d62 | 610 | dprintk("RPC: %5u %s(%s, %u, %u, %d)\n", |
0dc47877 | 611 | task->tk_pid, __func__, |
45160d62 | 612 | clnt->cl_server, clnt->cl_prog, clnt->cl_vers, xprt->prot); |
a509050b | 613 | |
381ba74a TM |
614 | /* Put self on the wait queue to ensure we get notified if |
615 | * some other task is already attempting to bind the port */ | |
616 | rpc_sleep_on(&xprt->binding, task, NULL); | |
617 | ||
a509050b | 618 | if (xprt_test_and_set_binding(xprt)) { |
45160d62 | 619 | dprintk("RPC: %5u %s: waiting for another binder\n", |
0dc47877 | 620 | task->tk_pid, __func__); |
381ba74a | 621 | return; |
a509050b CL |
622 | } |
623 | ||
a509050b CL |
624 | /* Someone else may have bound if we slept */ |
625 | if (xprt_bound(xprt)) { | |
626 | status = 0; | |
45160d62 | 627 | dprintk("RPC: %5u %s: already bound\n", |
0dc47877 | 628 | task->tk_pid, __func__); |
a509050b CL |
629 | goto bailout_nofree; |
630 | } | |
631 | ||
ba809130 | 632 | /* Parent transport's destination address */ |
9f6ad26d | 633 | salen = rpc_peeraddr(clnt, sap, sizeof(addr)); |
d5b64430 CL |
634 | |
635 | /* Don't ever use rpcbind v2 for AF_INET6 requests */ | |
9f6ad26d | 636 | switch (sap->sa_family) { |
d5b64430 | 637 | case AF_INET: |
803a9067 TM |
638 | proc = rpcb_next_version[xprt->bind_index].rpc_proc; |
639 | bind_version = rpcb_next_version[xprt->bind_index].rpc_vers; | |
d5b64430 CL |
640 | break; |
641 | case AF_INET6: | |
803a9067 TM |
642 | proc = rpcb_next_version6[xprt->bind_index].rpc_proc; |
643 | bind_version = rpcb_next_version6[xprt->bind_index].rpc_vers; | |
d5b64430 CL |
644 | break; |
645 | default: | |
646 | status = -EAFNOSUPPORT; | |
647 | dprintk("RPC: %5u %s: bad address family\n", | |
0dc47877 | 648 | task->tk_pid, __func__); |
d5b64430 CL |
649 | goto bailout_nofree; |
650 | } | |
803a9067 | 651 | if (proc == NULL) { |
a509050b | 652 | xprt->bind_index = 0; |
906462af | 653 | status = -EPFNOSUPPORT; |
45160d62 | 654 | dprintk("RPC: %5u %s: no more getport versions available\n", |
0dc47877 | 655 | task->tk_pid, __func__); |
a509050b CL |
656 | goto bailout_nofree; |
657 | } | |
a509050b | 658 | |
45160d62 | 659 | dprintk("RPC: %5u %s: trying rpcbind version %u\n", |
0dc47877 | 660 | task->tk_pid, __func__, bind_version); |
a509050b | 661 | |
9f6ad26d | 662 | rpcb_clnt = rpcb_create(clnt->cl_server, sap, salen, xprt->prot, |
423d8b06 | 663 | bind_version); |
143b6c40 CL |
664 | if (IS_ERR(rpcb_clnt)) { |
665 | status = PTR_ERR(rpcb_clnt); | |
666 | dprintk("RPC: %5u %s: rpcb_create failed, error %ld\n", | |
0dc47877 | 667 | task->tk_pid, __func__, PTR_ERR(rpcb_clnt)); |
143b6c40 CL |
668 | goto bailout_nofree; |
669 | } | |
670 | ||
a509050b CL |
671 | map = kzalloc(sizeof(struct rpcbind_args), GFP_ATOMIC); |
672 | if (!map) { | |
673 | status = -ENOMEM; | |
45160d62 | 674 | dprintk("RPC: %5u %s: no memory available\n", |
0dc47877 | 675 | task->tk_pid, __func__); |
96165e2b | 676 | goto bailout_release_client; |
a509050b CL |
677 | } |
678 | map->r_prog = clnt->cl_prog; | |
679 | map->r_vers = clnt->cl_vers; | |
680 | map->r_prot = xprt->prot; | |
681 | map->r_port = 0; | |
682 | map->r_xprt = xprt_get(xprt); | |
381ba74a | 683 | map->r_status = -EIO; |
a509050b | 684 | |
ba809130 CL |
685 | switch (bind_version) { |
686 | case RPCBVERS_4: | |
687 | case RPCBVERS_3: | |
688 | map->r_netid = rpc_peeraddr2str(clnt, RPC_DISPLAY_NETID); | |
689 | map->r_addr = rpc_sockaddr2uaddr(sap); | |
690 | map->r_owner = ""; | |
691 | break; | |
692 | case RPCBVERS_2: | |
693 | map->r_addr = NULL; | |
694 | break; | |
695 | default: | |
696 | BUG(); | |
697 | } | |
698 | ||
803a9067 | 699 | child = rpcb_call_async(rpcb_clnt, map, proc); |
4c402b40 | 700 | rpc_release_client(rpcb_clnt); |
a509050b | 701 | if (IS_ERR(child)) { |
0d3a34b4 | 702 | /* rpcb_map_release() has freed the arguments */ |
45160d62 | 703 | dprintk("RPC: %5u %s: rpc_run_task failed\n", |
0dc47877 | 704 | task->tk_pid, __func__); |
381ba74a | 705 | return; |
a509050b | 706 | } |
a509050b | 707 | |
9a4bd29f TM |
708 | xprt->stat.bind_count++; |
709 | rpc_put_task(child); | |
a509050b CL |
710 | return; |
711 | ||
96165e2b TM |
712 | bailout_release_client: |
713 | rpc_release_client(rpcb_clnt); | |
a509050b CL |
714 | bailout_nofree: |
715 | rpcb_wake_rpcbind_waiters(xprt, status); | |
a509050b CL |
716 | task->tk_status = status; |
717 | } | |
12444809 | 718 | EXPORT_SYMBOL_GPL(rpcb_getport_async); |
a509050b CL |
719 | |
720 | /* | |
721 | * Rpcbind child task calls this callback via tk_exit. | |
722 | */ | |
723 | static void rpcb_getport_done(struct rpc_task *child, void *data) | |
724 | { | |
725 | struct rpcbind_args *map = data; | |
726 | struct rpc_xprt *xprt = map->r_xprt; | |
727 | int status = child->tk_status; | |
728 | ||
4784cb51 CL |
729 | /* Garbage reply: retry with a lesser rpcbind version */ |
730 | if (status == -EIO) | |
731 | status = -EPROTONOSUPPORT; | |
732 | ||
a509050b CL |
733 | /* rpcbind server doesn't support this rpcbind protocol version */ |
734 | if (status == -EPROTONOSUPPORT) | |
735 | xprt->bind_index++; | |
736 | ||
737 | if (status < 0) { | |
738 | /* rpcbind server not available on remote host? */ | |
739 | xprt->ops->set_port(xprt, 0); | |
740 | } else if (map->r_port == 0) { | |
741 | /* Requested RPC service wasn't registered on remote host */ | |
742 | xprt->ops->set_port(xprt, 0); | |
743 | status = -EACCES; | |
744 | } else { | |
745 | /* Succeeded */ | |
746 | xprt->ops->set_port(xprt, map->r_port); | |
747 | xprt_set_bound(xprt); | |
748 | status = 0; | |
749 | } | |
750 | ||
751 | dprintk("RPC: %5u rpcb_getport_done(status %d, port %u)\n", | |
752 | child->tk_pid, status, map->r_port); | |
753 | ||
381ba74a | 754 | map->r_status = status; |
a509050b CL |
755 | } |
756 | ||
166b88d7 CL |
757 | /* |
758 | * XDR functions for rpcbind | |
759 | */ | |
760 | ||
9f06c719 CL |
761 | static void rpcb_enc_mapping(struct rpc_rqst *req, struct xdr_stream *xdr, |
762 | const struct rpcbind_args *rpcb) | |
6f2c2db7 CL |
763 | { |
764 | struct rpc_task *task = req->rq_task; | |
9f06c719 | 765 | __be32 *p; |
6f2c2db7 CL |
766 | |
767 | dprintk("RPC: %5u encoding PMAP_%s call (%u, %u, %d, %u)\n", | |
768 | task->tk_pid, task->tk_msg.rpc_proc->p_name, | |
769 | rpcb->r_prog, rpcb->r_vers, rpcb->r_prot, rpcb->r_port); | |
770 | ||
9f06c719 | 771 | p = xdr_reserve_space(xdr, RPCB_mappingargs_sz << 2); |
4129ccf3 CL |
772 | *p++ = cpu_to_be32(rpcb->r_prog); |
773 | *p++ = cpu_to_be32(rpcb->r_vers); | |
774 | *p++ = cpu_to_be32(rpcb->r_prot); | |
775 | *p = cpu_to_be32(rpcb->r_port); | |
6f2c2db7 CL |
776 | } |
777 | ||
bf269551 | 778 | static int rpcb_dec_getport(struct rpc_rqst *req, struct xdr_stream *xdr, |
c0c077df CL |
779 | struct rpcbind_args *rpcb) |
780 | { | |
781 | struct rpc_task *task = req->rq_task; | |
c0c077df | 782 | unsigned long port; |
bf269551 | 783 | __be32 *p; |
c0c077df CL |
784 | |
785 | rpcb->r_port = 0; | |
786 | ||
bf269551 | 787 | p = xdr_inline_decode(xdr, 4); |
c0c077df CL |
788 | if (unlikely(p == NULL)) |
789 | return -EIO; | |
790 | ||
4129ccf3 | 791 | port = be32_to_cpup(p); |
c0c077df CL |
792 | dprintk("RPC: %5u PMAP_%s result: %lu\n", task->tk_pid, |
793 | task->tk_msg.rpc_proc->p_name, port); | |
4be929be | 794 | if (unlikely(port > USHRT_MAX)) |
c0c077df CL |
795 | return -EIO; |
796 | ||
797 | rpcb->r_port = port; | |
798 | return 0; | |
799 | } | |
800 | ||
bf269551 | 801 | static int rpcb_dec_set(struct rpc_rqst *req, struct xdr_stream *xdr, |
7ed0ff98 CL |
802 | unsigned int *boolp) |
803 | { | |
804 | struct rpc_task *task = req->rq_task; | |
bf269551 | 805 | __be32 *p; |
7ed0ff98 | 806 | |
bf269551 | 807 | p = xdr_inline_decode(xdr, 4); |
7ed0ff98 CL |
808 | if (unlikely(p == NULL)) |
809 | return -EIO; | |
810 | ||
811 | *boolp = 0; | |
bf269551 | 812 | if (*p != xdr_zero) |
7ed0ff98 CL |
813 | *boolp = 1; |
814 | ||
815 | dprintk("RPC: %5u RPCB_%s call %s\n", | |
816 | task->tk_pid, task->tk_msg.rpc_proc->p_name, | |
817 | (*boolp ? "succeeded" : "failed")); | |
818 | return 0; | |
819 | } | |
820 | ||
4129ccf3 CL |
821 | static void encode_rpcb_string(struct xdr_stream *xdr, const char *string, |
822 | const u32 maxstrlen) | |
6f2c2db7 | 823 | { |
6f2c2db7 | 824 | __be32 *p; |
4129ccf3 | 825 | u32 len; |
6f2c2db7 | 826 | |
6f2c2db7 | 827 | len = strlen(string); |
4129ccf3 CL |
828 | BUG_ON(len > maxstrlen); |
829 | p = xdr_reserve_space(xdr, 4 + len); | |
6f2c2db7 | 830 | xdr_encode_opaque(p, string, len); |
6f2c2db7 CL |
831 | } |
832 | ||
9f06c719 CL |
833 | static void rpcb_enc_getaddr(struct rpc_rqst *req, struct xdr_stream *xdr, |
834 | const struct rpcbind_args *rpcb) | |
6f2c2db7 CL |
835 | { |
836 | struct rpc_task *task = req->rq_task; | |
9f06c719 | 837 | __be32 *p; |
6f2c2db7 CL |
838 | |
839 | dprintk("RPC: %5u encoding RPCB_%s call (%u, %u, '%s', '%s')\n", | |
840 | task->tk_pid, task->tk_msg.rpc_proc->p_name, | |
841 | rpcb->r_prog, rpcb->r_vers, | |
842 | rpcb->r_netid, rpcb->r_addr); | |
843 | ||
9f06c719 | 844 | p = xdr_reserve_space(xdr, (RPCB_program_sz + RPCB_version_sz) << 2); |
4129ccf3 CL |
845 | *p++ = cpu_to_be32(rpcb->r_prog); |
846 | *p = cpu_to_be32(rpcb->r_vers); | |
6f2c2db7 | 847 | |
9f06c719 CL |
848 | encode_rpcb_string(xdr, rpcb->r_netid, RPCBIND_MAXNETIDLEN); |
849 | encode_rpcb_string(xdr, rpcb->r_addr, RPCBIND_MAXUADDRLEN); | |
850 | encode_rpcb_string(xdr, rpcb->r_owner, RPCB_MAXOWNERLEN); | |
6f2c2db7 CL |
851 | } |
852 | ||
bf269551 | 853 | static int rpcb_dec_getaddr(struct rpc_rqst *req, struct xdr_stream *xdr, |
c0c077df CL |
854 | struct rpcbind_args *rpcb) |
855 | { | |
856 | struct sockaddr_storage address; | |
857 | struct sockaddr *sap = (struct sockaddr *)&address; | |
858 | struct rpc_task *task = req->rq_task; | |
bf269551 | 859 | __be32 *p; |
c0c077df CL |
860 | u32 len; |
861 | ||
862 | rpcb->r_port = 0; | |
863 | ||
bf269551 | 864 | p = xdr_inline_decode(xdr, 4); |
c0c077df CL |
865 | if (unlikely(p == NULL)) |
866 | goto out_fail; | |
4129ccf3 | 867 | len = be32_to_cpup(p); |
c0c077df CL |
868 | |
869 | /* | |
870 | * If the returned universal address is a null string, | |
871 | * the requested RPC service was not registered. | |
872 | */ | |
873 | if (len == 0) { | |
874 | dprintk("RPC: %5u RPCB reply: program not registered\n", | |
875 | task->tk_pid); | |
876 | return 0; | |
877 | } | |
878 | ||
879 | if (unlikely(len > RPCBIND_MAXUADDRLEN)) | |
880 | goto out_fail; | |
881 | ||
bf269551 | 882 | p = xdr_inline_decode(xdr, len); |
c0c077df CL |
883 | if (unlikely(p == NULL)) |
884 | goto out_fail; | |
885 | dprintk("RPC: %5u RPCB_%s reply: %s\n", task->tk_pid, | |
886 | task->tk_msg.rpc_proc->p_name, (char *)p); | |
887 | ||
888 | if (rpc_uaddr2sockaddr((char *)p, len, sap, sizeof(address)) == 0) | |
889 | goto out_fail; | |
890 | rpcb->r_port = rpc_get_port(sap); | |
891 | ||
892 | return 0; | |
893 | ||
894 | out_fail: | |
895 | dprintk("RPC: %5u malformed RPCB_%s reply\n", | |
896 | task->tk_pid, task->tk_msg.rpc_proc->p_name); | |
897 | return -EIO; | |
898 | } | |
899 | ||
a509050b CL |
900 | /* |
901 | * Not all rpcbind procedures described in RFC 1833 are implemented | |
902 | * since the Linux kernel RPC code requires only these. | |
903 | */ | |
f8b761ef | 904 | |
a509050b | 905 | static struct rpc_procinfo rpcb_procedures2[] = { |
f8b761ef CL |
906 | [RPCBPROC_SET] = { |
907 | .p_proc = RPCBPROC_SET, | |
9f06c719 | 908 | .p_encode = (kxdreproc_t)rpcb_enc_mapping, |
bf269551 | 909 | .p_decode = (kxdrdproc_t)rpcb_dec_set, |
f8b761ef CL |
910 | .p_arglen = RPCB_mappingargs_sz, |
911 | .p_replen = RPCB_setres_sz, | |
912 | .p_statidx = RPCBPROC_SET, | |
913 | .p_timer = 0, | |
914 | .p_name = "SET", | |
915 | }, | |
916 | [RPCBPROC_UNSET] = { | |
917 | .p_proc = RPCBPROC_UNSET, | |
9f06c719 | 918 | .p_encode = (kxdreproc_t)rpcb_enc_mapping, |
bf269551 | 919 | .p_decode = (kxdrdproc_t)rpcb_dec_set, |
f8b761ef CL |
920 | .p_arglen = RPCB_mappingargs_sz, |
921 | .p_replen = RPCB_setres_sz, | |
922 | .p_statidx = RPCBPROC_UNSET, | |
923 | .p_timer = 0, | |
924 | .p_name = "UNSET", | |
925 | }, | |
926 | [RPCBPROC_GETPORT] = { | |
927 | .p_proc = RPCBPROC_GETPORT, | |
9f06c719 | 928 | .p_encode = (kxdreproc_t)rpcb_enc_mapping, |
bf269551 | 929 | .p_decode = (kxdrdproc_t)rpcb_dec_getport, |
f8b761ef CL |
930 | .p_arglen = RPCB_mappingargs_sz, |
931 | .p_replen = RPCB_getportres_sz, | |
932 | .p_statidx = RPCBPROC_GETPORT, | |
933 | .p_timer = 0, | |
934 | .p_name = "GETPORT", | |
935 | }, | |
a509050b CL |
936 | }; |
937 | ||
938 | static struct rpc_procinfo rpcb_procedures3[] = { | |
f8b761ef CL |
939 | [RPCBPROC_SET] = { |
940 | .p_proc = RPCBPROC_SET, | |
9f06c719 | 941 | .p_encode = (kxdreproc_t)rpcb_enc_getaddr, |
bf269551 | 942 | .p_decode = (kxdrdproc_t)rpcb_dec_set, |
f8b761ef CL |
943 | .p_arglen = RPCB_getaddrargs_sz, |
944 | .p_replen = RPCB_setres_sz, | |
945 | .p_statidx = RPCBPROC_SET, | |
946 | .p_timer = 0, | |
947 | .p_name = "SET", | |
948 | }, | |
949 | [RPCBPROC_UNSET] = { | |
950 | .p_proc = RPCBPROC_UNSET, | |
9f06c719 | 951 | .p_encode = (kxdreproc_t)rpcb_enc_getaddr, |
bf269551 | 952 | .p_decode = (kxdrdproc_t)rpcb_dec_set, |
f8b761ef CL |
953 | .p_arglen = RPCB_getaddrargs_sz, |
954 | .p_replen = RPCB_setres_sz, | |
955 | .p_statidx = RPCBPROC_UNSET, | |
956 | .p_timer = 0, | |
957 | .p_name = "UNSET", | |
958 | }, | |
959 | [RPCBPROC_GETADDR] = { | |
960 | .p_proc = RPCBPROC_GETADDR, | |
9f06c719 | 961 | .p_encode = (kxdreproc_t)rpcb_enc_getaddr, |
bf269551 | 962 | .p_decode = (kxdrdproc_t)rpcb_dec_getaddr, |
f8b761ef CL |
963 | .p_arglen = RPCB_getaddrargs_sz, |
964 | .p_replen = RPCB_getaddrres_sz, | |
965 | .p_statidx = RPCBPROC_GETADDR, | |
966 | .p_timer = 0, | |
967 | .p_name = "GETADDR", | |
968 | }, | |
a509050b CL |
969 | }; |
970 | ||
971 | static struct rpc_procinfo rpcb_procedures4[] = { | |
f8b761ef CL |
972 | [RPCBPROC_SET] = { |
973 | .p_proc = RPCBPROC_SET, | |
9f06c719 | 974 | .p_encode = (kxdreproc_t)rpcb_enc_getaddr, |
bf269551 | 975 | .p_decode = (kxdrdproc_t)rpcb_dec_set, |
f8b761ef CL |
976 | .p_arglen = RPCB_getaddrargs_sz, |
977 | .p_replen = RPCB_setres_sz, | |
978 | .p_statidx = RPCBPROC_SET, | |
979 | .p_timer = 0, | |
980 | .p_name = "SET", | |
981 | }, | |
982 | [RPCBPROC_UNSET] = { | |
983 | .p_proc = RPCBPROC_UNSET, | |
9f06c719 | 984 | .p_encode = (kxdreproc_t)rpcb_enc_getaddr, |
bf269551 | 985 | .p_decode = (kxdrdproc_t)rpcb_dec_set, |
f8b761ef CL |
986 | .p_arglen = RPCB_getaddrargs_sz, |
987 | .p_replen = RPCB_setres_sz, | |
988 | .p_statidx = RPCBPROC_UNSET, | |
989 | .p_timer = 0, | |
990 | .p_name = "UNSET", | |
991 | }, | |
992 | [RPCBPROC_GETADDR] = { | |
993 | .p_proc = RPCBPROC_GETADDR, | |
9f06c719 | 994 | .p_encode = (kxdreproc_t)rpcb_enc_getaddr, |
bf269551 | 995 | .p_decode = (kxdrdproc_t)rpcb_dec_getaddr, |
f8b761ef CL |
996 | .p_arglen = RPCB_getaddrargs_sz, |
997 | .p_replen = RPCB_getaddrres_sz, | |
998 | .p_statidx = RPCBPROC_GETADDR, | |
999 | .p_timer = 0, | |
1000 | .p_name = "GETADDR", | |
1001 | }, | |
a509050b CL |
1002 | }; |
1003 | ||
1004 | static struct rpcb_info rpcb_next_version[] = { | |
fc200e79 CL |
1005 | { |
1006 | .rpc_vers = RPCBVERS_2, | |
1007 | .rpc_proc = &rpcb_procedures2[RPCBPROC_GETPORT], | |
1008 | }, | |
1009 | { | |
1010 | .rpc_proc = NULL, | |
1011 | }, | |
a509050b CL |
1012 | }; |
1013 | ||
d5b64430 | 1014 | static struct rpcb_info rpcb_next_version6[] = { |
fc200e79 CL |
1015 | { |
1016 | .rpc_vers = RPCBVERS_4, | |
8842413a | 1017 | .rpc_proc = &rpcb_procedures4[RPCBPROC_GETADDR], |
fc200e79 CL |
1018 | }, |
1019 | { | |
1020 | .rpc_vers = RPCBVERS_3, | |
1021 | .rpc_proc = &rpcb_procedures3[RPCBPROC_GETADDR], | |
1022 | }, | |
fc200e79 CL |
1023 | { |
1024 | .rpc_proc = NULL, | |
1025 | }, | |
d5b64430 CL |
1026 | }; |
1027 | ||
a509050b | 1028 | static struct rpc_version rpcb_version2 = { |
fc200e79 | 1029 | .number = RPCBVERS_2, |
1ac7c23e | 1030 | .nrprocs = ARRAY_SIZE(rpcb_procedures2), |
a509050b CL |
1031 | .procs = rpcb_procedures2 |
1032 | }; | |
1033 | ||
1034 | static struct rpc_version rpcb_version3 = { | |
fc200e79 | 1035 | .number = RPCBVERS_3, |
1ac7c23e | 1036 | .nrprocs = ARRAY_SIZE(rpcb_procedures3), |
a509050b CL |
1037 | .procs = rpcb_procedures3 |
1038 | }; | |
1039 | ||
1040 | static struct rpc_version rpcb_version4 = { | |
fc200e79 | 1041 | .number = RPCBVERS_4, |
1ac7c23e | 1042 | .nrprocs = ARRAY_SIZE(rpcb_procedures4), |
a509050b CL |
1043 | .procs = rpcb_procedures4 |
1044 | }; | |
1045 | ||
1046 | static struct rpc_version *rpcb_version[] = { | |
1047 | NULL, | |
1048 | NULL, | |
1049 | &rpcb_version2, | |
1050 | &rpcb_version3, | |
1051 | &rpcb_version4 | |
1052 | }; | |
1053 | ||
1054 | static struct rpc_stat rpcb_stats; | |
1055 | ||
7f4adeff | 1056 | static struct rpc_program rpcb_program = { |
a509050b CL |
1057 | .name = "rpcbind", |
1058 | .number = RPCBIND_PROGRAM, | |
1059 | .nrvers = ARRAY_SIZE(rpcb_version), | |
1060 | .version = rpcb_version, | |
1061 | .stats = &rpcb_stats, | |
1062 | }; | |
c526611d CL |
1063 | |
1064 | /** | |
1065 | * cleanup_rpcb_clnt - remove xprtsock's sysctls, unregister | |
1066 | * | |
1067 | */ | |
1068 | void cleanup_rpcb_clnt(void) | |
1069 | { | |
1070 | if (rpcb_local_clnt4) | |
1071 | rpc_shutdown_client(rpcb_local_clnt4); | |
1072 | if (rpcb_local_clnt) | |
1073 | rpc_shutdown_client(rpcb_local_clnt); | |
1074 | } |