Commit | Line | Data |
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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> |
9d548b9c | 24 | #include <net/ipv6.h> |
a509050b CL |
25 | |
26 | #include <linux/sunrpc/clnt.h> | |
27 | #include <linux/sunrpc/sched.h> | |
0896a725 | 28 | #include <linux/sunrpc/xprtsock.h> |
a509050b CL |
29 | |
30 | #ifdef RPC_DEBUG | |
31 | # define RPCDBG_FACILITY RPCDBG_BIND | |
32 | #endif | |
33 | ||
34 | #define RPCBIND_PROGRAM (100000u) | |
35 | #define RPCBIND_PORT (111u) | |
36 | ||
fc200e79 CL |
37 | #define RPCBVERS_2 (2u) |
38 | #define RPCBVERS_3 (3u) | |
39 | #define RPCBVERS_4 (4u) | |
40 | ||
a509050b CL |
41 | enum { |
42 | RPCBPROC_NULL, | |
43 | RPCBPROC_SET, | |
44 | RPCBPROC_UNSET, | |
45 | RPCBPROC_GETPORT, | |
46 | RPCBPROC_GETADDR = 3, /* alias for GETPORT */ | |
47 | RPCBPROC_DUMP, | |
48 | RPCBPROC_CALLIT, | |
49 | RPCBPROC_BCAST = 5, /* alias for CALLIT */ | |
50 | RPCBPROC_GETTIME, | |
51 | RPCBPROC_UADDR2TADDR, | |
52 | RPCBPROC_TADDR2UADDR, | |
53 | RPCBPROC_GETVERSADDR, | |
54 | RPCBPROC_INDIRECT, | |
55 | RPCBPROC_GETADDRLIST, | |
56 | RPCBPROC_GETSTAT, | |
57 | }; | |
58 | ||
59 | #define RPCB_HIGHPROC_2 RPCBPROC_CALLIT | |
60 | #define RPCB_HIGHPROC_3 RPCBPROC_TADDR2UADDR | |
61 | #define RPCB_HIGHPROC_4 RPCBPROC_GETSTAT | |
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 | ||
cc5598b7 CL |
164 | static const struct sockaddr_in rpcb_inaddr_loopback = { |
165 | .sin_family = AF_INET, | |
166 | .sin_addr.s_addr = htonl(INADDR_LOOPBACK), | |
167 | .sin_port = htons(RPCBIND_PORT), | |
168 | }; | |
169 | ||
c526611d CL |
170 | static DEFINE_MUTEX(rpcb_create_local_mutex); |
171 | ||
172 | /* | |
173 | * Returns zero on success, otherwise a negative errno value | |
174 | * is returned. | |
175 | */ | |
176 | static int rpcb_create_local(void) | |
cc5598b7 CL |
177 | { |
178 | struct rpc_create_args args = { | |
2a76b3bf | 179 | .protocol = XPRT_TRANSPORT_TCP, |
5a462115 CL |
180 | .address = (struct sockaddr *)&rpcb_inaddr_loopback, |
181 | .addrsize = sizeof(rpcb_inaddr_loopback), | |
cc5598b7 CL |
182 | .servername = "localhost", |
183 | .program = &rpcb_program, | |
c526611d | 184 | .version = RPCBVERS_2, |
cc5598b7 CL |
185 | .authflavor = RPC_AUTH_UNIX, |
186 | .flags = RPC_CLNT_CREATE_NOPING, | |
187 | }; | |
c526611d CL |
188 | struct rpc_clnt *clnt, *clnt4; |
189 | int result = 0; | |
190 | ||
191 | if (rpcb_local_clnt) | |
192 | return result; | |
193 | ||
194 | mutex_lock(&rpcb_create_local_mutex); | |
195 | if (rpcb_local_clnt) | |
196 | goto out; | |
197 | ||
198 | clnt = rpc_create(&args); | |
199 | if (IS_ERR(clnt)) { | |
200 | dprintk("RPC: failed to create local rpcbind " | |
201 | "client (errno %ld).\n", PTR_ERR(clnt)); | |
202 | result = -PTR_ERR(clnt); | |
203 | goto out; | |
204 | } | |
cc5598b7 | 205 | |
c526611d CL |
206 | /* |
207 | * This results in an RPC ping. On systems running portmapper, | |
208 | * the v4 ping will fail. Proceed anyway, but disallow rpcb | |
209 | * v4 upcalls. | |
210 | */ | |
211 | clnt4 = rpc_bind_new_program(clnt, &rpcb_program, RPCBVERS_4); | |
212 | if (IS_ERR(clnt4)) { | |
213 | dprintk("RPC: failed to create local rpcbind v4 " | |
214 | "cleint (errno %ld).\n", PTR_ERR(clnt4)); | |
215 | clnt4 = NULL; | |
216 | } | |
217 | ||
218 | rpcb_local_clnt = clnt; | |
219 | rpcb_local_clnt4 = clnt4; | |
220 | ||
221 | out: | |
222 | mutex_unlock(&rpcb_create_local_mutex); | |
223 | return result; | |
cc5598b7 CL |
224 | } |
225 | ||
a509050b | 226 | static struct rpc_clnt *rpcb_create(char *hostname, struct sockaddr *srvaddr, |
423d8b06 | 227 | size_t salen, int proto, u32 version) |
a509050b CL |
228 | { |
229 | struct rpc_create_args args = { | |
230 | .protocol = proto, | |
231 | .address = srvaddr, | |
9f6ad26d | 232 | .addrsize = salen, |
a509050b CL |
233 | .servername = hostname, |
234 | .program = &rpcb_program, | |
235 | .version = version, | |
236 | .authflavor = RPC_AUTH_UNIX, | |
423d8b06 CL |
237 | .flags = (RPC_CLNT_CREATE_NOPING | |
238 | RPC_CLNT_CREATE_NONPRIVPORT), | |
a509050b CL |
239 | }; |
240 | ||
d5b64430 CL |
241 | switch (srvaddr->sa_family) { |
242 | case AF_INET: | |
243 | ((struct sockaddr_in *)srvaddr)->sin_port = htons(RPCBIND_PORT); | |
244 | break; | |
245 | case AF_INET6: | |
246 | ((struct sockaddr_in6 *)srvaddr)->sin6_port = htons(RPCBIND_PORT); | |
247 | break; | |
248 | default: | |
249 | return NULL; | |
250 | } | |
251 | ||
a509050b CL |
252 | return rpc_create(&args); |
253 | } | |
254 | ||
c526611d | 255 | static int rpcb_register_call(struct rpc_clnt *clnt, struct rpc_message *msg) |
babe80eb | 256 | { |
14aeb211 | 257 | int result, error = 0; |
babe80eb | 258 | |
14aeb211 | 259 | msg->rpc_resp = &result; |
babe80eb | 260 | |
2a76b3bf | 261 | error = rpc_call_sync(clnt, msg, RPC_TASK_SOFTCONN); |
14aeb211 | 262 | if (error < 0) { |
363f724c | 263 | dprintk("RPC: failed to contact local rpcbind " |
babe80eb | 264 | "server (errno %d).\n", -error); |
14aeb211 CL |
265 | return error; |
266 | } | |
267 | ||
db820d63 | 268 | if (!result) |
14aeb211 | 269 | return -EACCES; |
14aeb211 | 270 | return 0; |
babe80eb CL |
271 | } |
272 | ||
a509050b CL |
273 | /** |
274 | * rpcb_register - set or unset a port registration with the local rpcbind svc | |
275 | * @prog: RPC program number to bind | |
276 | * @vers: RPC version number to bind | |
c2e1b09f | 277 | * @prot: transport protocol to register |
a509050b | 278 | * @port: port value to register |
14aeb211 CL |
279 | * |
280 | * Returns zero if the registration request was dispatched successfully | |
281 | * and the rpcbind daemon returned success. Otherwise, returns an errno | |
282 | * value that reflects the nature of the error (request could not be | |
283 | * dispatched, timed out, or rpcbind returned an error). | |
c2e1b09f CL |
284 | * |
285 | * RPC services invoke this function to advertise their contact | |
286 | * information via the system's rpcbind daemon. RPC services | |
287 | * invoke this function once for each [program, version, transport] | |
288 | * tuple they wish to advertise. | |
289 | * | |
290 | * Callers may also unregister RPC services that are no longer | |
291 | * available by setting the passed-in port to zero. This removes | |
292 | * all registered transports for [program, version] from the local | |
293 | * rpcbind database. | |
294 | * | |
c2e1b09f CL |
295 | * This function uses rpcbind protocol version 2 to contact the |
296 | * local rpcbind daemon. | |
297 | * | |
298 | * Registration works over both AF_INET and AF_INET6, and services | |
299 | * registered via this function are advertised as available for any | |
300 | * address. If the local rpcbind daemon is listening on AF_INET6, | |
301 | * services registered via this function will be advertised on | |
302 | * IN6ADDR_ANY (ie available for all AF_INET and AF_INET6 | |
303 | * addresses). | |
a509050b | 304 | */ |
14aeb211 | 305 | int rpcb_register(u32 prog, u32 vers, int prot, unsigned short port) |
a509050b | 306 | { |
a509050b CL |
307 | struct rpcbind_args map = { |
308 | .r_prog = prog, | |
309 | .r_vers = vers, | |
310 | .r_prot = prot, | |
311 | .r_port = port, | |
312 | }; | |
313 | struct rpc_message msg = { | |
a509050b | 314 | .rpc_argp = &map, |
a509050b | 315 | }; |
c526611d CL |
316 | int error; |
317 | ||
318 | error = rpcb_create_local(); | |
319 | if (error) | |
320 | return error; | |
a509050b CL |
321 | |
322 | dprintk("RPC: %sregistering (%u, %u, %d, %u) with local " | |
323 | "rpcbind\n", (port ? "" : "un"), | |
324 | prog, vers, prot, port); | |
325 | ||
babe80eb CL |
326 | msg.rpc_proc = &rpcb_procedures2[RPCBPROC_UNSET]; |
327 | if (port) | |
328 | msg.rpc_proc = &rpcb_procedures2[RPCBPROC_SET]; | |
a509050b | 329 | |
c526611d | 330 | return rpcb_register_call(rpcb_local_clnt, &msg); |
a509050b CL |
331 | } |
332 | ||
c2e1b09f CL |
333 | /* |
334 | * Fill in AF_INET family-specific arguments to register | |
335 | */ | |
1673d0de CL |
336 | static int rpcb_register_inet4(const struct sockaddr *sap, |
337 | struct rpc_message *msg) | |
c2e1b09f | 338 | { |
3aba4553 | 339 | const struct sockaddr_in *sin = (const struct sockaddr_in *)sap; |
c2e1b09f | 340 | struct rpcbind_args *map = msg->rpc_argp; |
3aba4553 | 341 | unsigned short port = ntohs(sin->sin_port); |
ba809130 | 342 | int result; |
c2e1b09f | 343 | |
ba809130 | 344 | map->r_addr = rpc_sockaddr2uaddr(sap); |
c2e1b09f CL |
345 | |
346 | dprintk("RPC: %sregistering [%u, %u, %s, '%s'] with " | |
347 | "local rpcbind\n", (port ? "" : "un"), | |
348 | map->r_prog, map->r_vers, | |
349 | map->r_addr, map->r_netid); | |
350 | ||
351 | msg->rpc_proc = &rpcb_procedures4[RPCBPROC_UNSET]; | |
352 | if (port) | |
353 | msg->rpc_proc = &rpcb_procedures4[RPCBPROC_SET]; | |
354 | ||
c526611d | 355 | result = rpcb_register_call(rpcb_local_clnt4, msg); |
ba809130 CL |
356 | kfree(map->r_addr); |
357 | return result; | |
c2e1b09f CL |
358 | } |
359 | ||
360 | /* | |
361 | * Fill in AF_INET6 family-specific arguments to register | |
362 | */ | |
1673d0de CL |
363 | static int rpcb_register_inet6(const struct sockaddr *sap, |
364 | struct rpc_message *msg) | |
c2e1b09f | 365 | { |
3aba4553 | 366 | const struct sockaddr_in6 *sin6 = (const struct sockaddr_in6 *)sap; |
c2e1b09f | 367 | struct rpcbind_args *map = msg->rpc_argp; |
3aba4553 | 368 | unsigned short port = ntohs(sin6->sin6_port); |
ba809130 | 369 | int result; |
c2e1b09f | 370 | |
ba809130 | 371 | map->r_addr = rpc_sockaddr2uaddr(sap); |
c2e1b09f CL |
372 | |
373 | dprintk("RPC: %sregistering [%u, %u, %s, '%s'] with " | |
374 | "local rpcbind\n", (port ? "" : "un"), | |
375 | map->r_prog, map->r_vers, | |
376 | map->r_addr, map->r_netid); | |
377 | ||
378 | msg->rpc_proc = &rpcb_procedures4[RPCBPROC_UNSET]; | |
379 | if (port) | |
380 | msg->rpc_proc = &rpcb_procedures4[RPCBPROC_SET]; | |
381 | ||
c526611d | 382 | result = rpcb_register_call(rpcb_local_clnt4, msg); |
ba809130 CL |
383 | kfree(map->r_addr); |
384 | return result; | |
c2e1b09f CL |
385 | } |
386 | ||
1673d0de CL |
387 | static int rpcb_unregister_all_protofamilies(struct rpc_message *msg) |
388 | { | |
389 | struct rpcbind_args *map = msg->rpc_argp; | |
390 | ||
391 | dprintk("RPC: unregistering [%u, %u, '%s'] with " | |
392 | "local rpcbind\n", | |
393 | map->r_prog, map->r_vers, map->r_netid); | |
394 | ||
395 | map->r_addr = ""; | |
396 | msg->rpc_proc = &rpcb_procedures4[RPCBPROC_UNSET]; | |
397 | ||
c526611d | 398 | return rpcb_register_call(rpcb_local_clnt4, msg); |
1673d0de CL |
399 | } |
400 | ||
c2e1b09f CL |
401 | /** |
402 | * rpcb_v4_register - set or unset a port registration with the local rpcbind | |
403 | * @program: RPC program number of service to (un)register | |
404 | * @version: RPC version number of service to (un)register | |
405 | * @address: address family, IP address, and port to (un)register | |
406 | * @netid: netid of transport protocol to (un)register | |
14aeb211 CL |
407 | * |
408 | * Returns zero if the registration request was dispatched successfully | |
409 | * and the rpcbind daemon returned success. Otherwise, returns an errno | |
410 | * value that reflects the nature of the error (request could not be | |
411 | * dispatched, timed out, or rpcbind returned an error). | |
c2e1b09f CL |
412 | * |
413 | * RPC services invoke this function to advertise their contact | |
414 | * information via the system's rpcbind daemon. RPC services | |
415 | * invoke this function once for each [program, version, address, | |
416 | * netid] tuple they wish to advertise. | |
417 | * | |
1673d0de CL |
418 | * Callers may also unregister RPC services that are registered at a |
419 | * specific address by setting the port number in @address to zero. | |
420 | * They may unregister all registered protocol families at once for | |
421 | * a service by passing a NULL @address argument. If @netid is "" | |
422 | * then all netids for [program, version, address] are unregistered. | |
c2e1b09f | 423 | * |
c2e1b09f CL |
424 | * This function uses rpcbind protocol version 4 to contact the |
425 | * local rpcbind daemon. The local rpcbind daemon must support | |
426 | * version 4 of the rpcbind protocol in order for these functions | |
427 | * to register a service successfully. | |
428 | * | |
429 | * Supported netids include "udp" and "tcp" for UDP and TCP over | |
430 | * IPv4, and "udp6" and "tcp6" for UDP and TCP over IPv6, | |
431 | * respectively. | |
432 | * | |
433 | * The contents of @address determine the address family and the | |
434 | * port to be registered. The usual practice is to pass INADDR_ANY | |
435 | * as the raw address, but specifying a non-zero address is also | |
436 | * supported by this API if the caller wishes to advertise an RPC | |
437 | * service on a specific network interface. | |
438 | * | |
439 | * Note that passing in INADDR_ANY does not create the same service | |
440 | * registration as IN6ADDR_ANY. The former advertises an RPC | |
441 | * service on any IPv4 address, but not on IPv6. The latter | |
442 | * advertises the service on all IPv4 and IPv6 addresses. | |
443 | */ | |
444 | int rpcb_v4_register(const u32 program, const u32 version, | |
14aeb211 | 445 | const struct sockaddr *address, const char *netid) |
c2e1b09f CL |
446 | { |
447 | struct rpcbind_args map = { | |
448 | .r_prog = program, | |
449 | .r_vers = version, | |
450 | .r_netid = netid, | |
451 | .r_owner = RPCB_OWNER_STRING, | |
452 | }; | |
453 | struct rpc_message msg = { | |
454 | .rpc_argp = &map, | |
c2e1b09f | 455 | }; |
c526611d CL |
456 | int error; |
457 | ||
458 | error = rpcb_create_local(); | |
459 | if (error) | |
460 | return error; | |
461 | if (rpcb_local_clnt4 == NULL) | |
462 | return -EPROTONOSUPPORT; | |
c2e1b09f | 463 | |
1673d0de CL |
464 | if (address == NULL) |
465 | return rpcb_unregister_all_protofamilies(&msg); | |
466 | ||
c2e1b09f CL |
467 | switch (address->sa_family) { |
468 | case AF_INET: | |
1673d0de | 469 | return rpcb_register_inet4(address, &msg); |
c2e1b09f | 470 | case AF_INET6: |
1673d0de | 471 | return rpcb_register_inet6(address, &msg); |
c2e1b09f CL |
472 | } |
473 | ||
474 | return -EAFNOSUPPORT; | |
475 | } | |
476 | ||
a509050b | 477 | /** |
cce63cd6 | 478 | * rpcb_getport_sync - obtain the port for an RPC service on a given host |
a509050b CL |
479 | * @sin: address of remote peer |
480 | * @prog: RPC program number to bind | |
481 | * @vers: RPC version number to bind | |
482 | * @prot: transport protocol to use to make this request | |
483 | * | |
67d60213 CL |
484 | * Return value is the requested advertised port number, |
485 | * or a negative errno value. | |
486 | * | |
a509050b | 487 | * Called from outside the RPC client in a synchronous task context. |
cce63cd6 | 488 | * Uses default timeout parameters specified by underlying transport. |
a509050b | 489 | * |
67d60213 | 490 | * XXX: Needs to support IPv6 |
a509050b | 491 | */ |
f1ec08cb | 492 | int rpcb_getport_sync(struct sockaddr_in *sin, u32 prog, u32 vers, int prot) |
a509050b CL |
493 | { |
494 | struct rpcbind_args map = { | |
495 | .r_prog = prog, | |
496 | .r_vers = vers, | |
497 | .r_prot = prot, | |
498 | .r_port = 0, | |
499 | }; | |
500 | struct rpc_message msg = { | |
501 | .rpc_proc = &rpcb_procedures2[RPCBPROC_GETPORT], | |
502 | .rpc_argp = &map, | |
c0c077df | 503 | .rpc_resp = &map, |
a509050b CL |
504 | }; |
505 | struct rpc_clnt *rpcb_clnt; | |
a509050b CL |
506 | int status; |
507 | ||
21454aaa HH |
508 | dprintk("RPC: %s(%pI4, %u, %u, %d)\n", |
509 | __func__, &sin->sin_addr.s_addr, prog, vers, prot); | |
a509050b | 510 | |
b91e101f | 511 | rpcb_clnt = rpcb_create(NULL, (struct sockaddr *)sin, |
423d8b06 | 512 | sizeof(*sin), prot, RPCBVERS_2); |
a509050b CL |
513 | if (IS_ERR(rpcb_clnt)) |
514 | return PTR_ERR(rpcb_clnt); | |
515 | ||
516 | status = rpc_call_sync(rpcb_clnt, &msg, 0); | |
90c5755f | 517 | rpc_shutdown_client(rpcb_clnt); |
a509050b CL |
518 | |
519 | if (status >= 0) { | |
520 | if (map.r_port != 0) | |
521 | return map.r_port; | |
522 | status = -EACCES; | |
523 | } | |
524 | return status; | |
525 | } | |
cce63cd6 | 526 | EXPORT_SYMBOL_GPL(rpcb_getport_sync); |
a509050b | 527 | |
803a9067 | 528 | static struct rpc_task *rpcb_call_async(struct rpc_clnt *rpcb_clnt, struct rpcbind_args *map, struct rpc_procinfo *proc) |
5138fde0 TM |
529 | { |
530 | struct rpc_message msg = { | |
803a9067 | 531 | .rpc_proc = proc, |
5138fde0 | 532 | .rpc_argp = map, |
c0c077df | 533 | .rpc_resp = map, |
5138fde0 TM |
534 | }; |
535 | struct rpc_task_setup task_setup_data = { | |
536 | .rpc_client = rpcb_clnt, | |
537 | .rpc_message = &msg, | |
538 | .callback_ops = &rpcb_getport_ops, | |
539 | .callback_data = map, | |
012da158 | 540 | .flags = RPC_TASK_ASYNC | RPC_TASK_SOFTCONN, |
5138fde0 TM |
541 | }; |
542 | ||
543 | return rpc_run_task(&task_setup_data); | |
544 | } | |
545 | ||
9a4bd29f TM |
546 | /* |
547 | * In the case where rpc clients have been cloned, we want to make | |
548 | * sure that we use the program number/version etc of the actual | |
549 | * owner of the xprt. To do so, we walk back up the tree of parents | |
550 | * to find whoever created the transport and/or whoever has the | |
551 | * autobind flag set. | |
552 | */ | |
553 | static struct rpc_clnt *rpcb_find_transport_owner(struct rpc_clnt *clnt) | |
554 | { | |
555 | struct rpc_clnt *parent = clnt->cl_parent; | |
556 | ||
557 | while (parent != clnt) { | |
558 | if (parent->cl_xprt != clnt->cl_xprt) | |
559 | break; | |
560 | if (clnt->cl_autobind) | |
561 | break; | |
562 | clnt = parent; | |
563 | parent = parent->cl_parent; | |
564 | } | |
565 | return clnt; | |
566 | } | |
567 | ||
a509050b | 568 | /** |
45160d62 | 569 | * rpcb_getport_async - obtain the port for a given RPC service on a given host |
a509050b CL |
570 | * @task: task that is waiting for portmapper request |
571 | * | |
572 | * This one can be called for an ongoing RPC request, and can be used in | |
573 | * an async (rpciod) context. | |
574 | */ | |
45160d62 | 575 | void rpcb_getport_async(struct rpc_task *task) |
a509050b | 576 | { |
9a4bd29f | 577 | struct rpc_clnt *clnt; |
803a9067 | 578 | struct rpc_procinfo *proc; |
0a48f5d7 | 579 | u32 bind_version; |
9a4bd29f | 580 | struct rpc_xprt *xprt; |
a509050b CL |
581 | struct rpc_clnt *rpcb_clnt; |
582 | static struct rpcbind_args *map; | |
583 | struct rpc_task *child; | |
9f6ad26d CL |
584 | struct sockaddr_storage addr; |
585 | struct sockaddr *sap = (struct sockaddr *)&addr; | |
586 | size_t salen; | |
a509050b CL |
587 | int status; |
588 | ||
9a4bd29f TM |
589 | clnt = rpcb_find_transport_owner(task->tk_client); |
590 | xprt = clnt->cl_xprt; | |
591 | ||
45160d62 | 592 | dprintk("RPC: %5u %s(%s, %u, %u, %d)\n", |
0dc47877 | 593 | task->tk_pid, __func__, |
45160d62 | 594 | clnt->cl_server, clnt->cl_prog, clnt->cl_vers, xprt->prot); |
a509050b | 595 | |
381ba74a TM |
596 | /* Put self on the wait queue to ensure we get notified if |
597 | * some other task is already attempting to bind the port */ | |
598 | rpc_sleep_on(&xprt->binding, task, NULL); | |
599 | ||
a509050b | 600 | if (xprt_test_and_set_binding(xprt)) { |
45160d62 | 601 | dprintk("RPC: %5u %s: waiting for another binder\n", |
0dc47877 | 602 | task->tk_pid, __func__); |
381ba74a | 603 | return; |
a509050b CL |
604 | } |
605 | ||
a509050b CL |
606 | /* Someone else may have bound if we slept */ |
607 | if (xprt_bound(xprt)) { | |
608 | status = 0; | |
45160d62 | 609 | dprintk("RPC: %5u %s: already bound\n", |
0dc47877 | 610 | task->tk_pid, __func__); |
a509050b CL |
611 | goto bailout_nofree; |
612 | } | |
613 | ||
ba809130 | 614 | /* Parent transport's destination address */ |
9f6ad26d | 615 | salen = rpc_peeraddr(clnt, sap, sizeof(addr)); |
d5b64430 CL |
616 | |
617 | /* Don't ever use rpcbind v2 for AF_INET6 requests */ | |
9f6ad26d | 618 | switch (sap->sa_family) { |
d5b64430 | 619 | case AF_INET: |
803a9067 TM |
620 | proc = rpcb_next_version[xprt->bind_index].rpc_proc; |
621 | bind_version = rpcb_next_version[xprt->bind_index].rpc_vers; | |
d5b64430 CL |
622 | break; |
623 | case AF_INET6: | |
803a9067 TM |
624 | proc = rpcb_next_version6[xprt->bind_index].rpc_proc; |
625 | bind_version = rpcb_next_version6[xprt->bind_index].rpc_vers; | |
d5b64430 CL |
626 | break; |
627 | default: | |
628 | status = -EAFNOSUPPORT; | |
629 | dprintk("RPC: %5u %s: bad address family\n", | |
0dc47877 | 630 | task->tk_pid, __func__); |
d5b64430 CL |
631 | goto bailout_nofree; |
632 | } | |
803a9067 | 633 | if (proc == NULL) { |
a509050b | 634 | xprt->bind_index = 0; |
906462af | 635 | status = -EPFNOSUPPORT; |
45160d62 | 636 | dprintk("RPC: %5u %s: no more getport versions available\n", |
0dc47877 | 637 | task->tk_pid, __func__); |
a509050b CL |
638 | goto bailout_nofree; |
639 | } | |
a509050b | 640 | |
45160d62 | 641 | dprintk("RPC: %5u %s: trying rpcbind version %u\n", |
0dc47877 | 642 | task->tk_pid, __func__, bind_version); |
a509050b | 643 | |
9f6ad26d | 644 | rpcb_clnt = rpcb_create(clnt->cl_server, sap, salen, xprt->prot, |
423d8b06 | 645 | bind_version); |
143b6c40 CL |
646 | if (IS_ERR(rpcb_clnt)) { |
647 | status = PTR_ERR(rpcb_clnt); | |
648 | dprintk("RPC: %5u %s: rpcb_create failed, error %ld\n", | |
0dc47877 | 649 | task->tk_pid, __func__, PTR_ERR(rpcb_clnt)); |
143b6c40 CL |
650 | goto bailout_nofree; |
651 | } | |
652 | ||
a509050b CL |
653 | map = kzalloc(sizeof(struct rpcbind_args), GFP_ATOMIC); |
654 | if (!map) { | |
655 | status = -ENOMEM; | |
45160d62 | 656 | dprintk("RPC: %5u %s: no memory available\n", |
0dc47877 | 657 | task->tk_pid, __func__); |
96165e2b | 658 | goto bailout_release_client; |
a509050b CL |
659 | } |
660 | map->r_prog = clnt->cl_prog; | |
661 | map->r_vers = clnt->cl_vers; | |
662 | map->r_prot = xprt->prot; | |
663 | map->r_port = 0; | |
664 | map->r_xprt = xprt_get(xprt); | |
381ba74a | 665 | map->r_status = -EIO; |
a509050b | 666 | |
ba809130 CL |
667 | switch (bind_version) { |
668 | case RPCBVERS_4: | |
669 | case RPCBVERS_3: | |
670 | map->r_netid = rpc_peeraddr2str(clnt, RPC_DISPLAY_NETID); | |
671 | map->r_addr = rpc_sockaddr2uaddr(sap); | |
672 | map->r_owner = ""; | |
673 | break; | |
674 | case RPCBVERS_2: | |
675 | map->r_addr = NULL; | |
676 | break; | |
677 | default: | |
678 | BUG(); | |
679 | } | |
680 | ||
803a9067 | 681 | child = rpcb_call_async(rpcb_clnt, map, proc); |
4c402b40 | 682 | rpc_release_client(rpcb_clnt); |
a509050b | 683 | if (IS_ERR(child)) { |
0d3a34b4 | 684 | /* rpcb_map_release() has freed the arguments */ |
45160d62 | 685 | dprintk("RPC: %5u %s: rpc_run_task failed\n", |
0dc47877 | 686 | task->tk_pid, __func__); |
381ba74a | 687 | return; |
a509050b | 688 | } |
a509050b | 689 | |
9a4bd29f TM |
690 | xprt->stat.bind_count++; |
691 | rpc_put_task(child); | |
a509050b CL |
692 | return; |
693 | ||
96165e2b TM |
694 | bailout_release_client: |
695 | rpc_release_client(rpcb_clnt); | |
a509050b CL |
696 | bailout_nofree: |
697 | rpcb_wake_rpcbind_waiters(xprt, status); | |
a509050b CL |
698 | task->tk_status = status; |
699 | } | |
12444809 | 700 | EXPORT_SYMBOL_GPL(rpcb_getport_async); |
a509050b CL |
701 | |
702 | /* | |
703 | * Rpcbind child task calls this callback via tk_exit. | |
704 | */ | |
705 | static void rpcb_getport_done(struct rpc_task *child, void *data) | |
706 | { | |
707 | struct rpcbind_args *map = data; | |
708 | struct rpc_xprt *xprt = map->r_xprt; | |
709 | int status = child->tk_status; | |
710 | ||
4784cb51 CL |
711 | /* Garbage reply: retry with a lesser rpcbind version */ |
712 | if (status == -EIO) | |
713 | status = -EPROTONOSUPPORT; | |
714 | ||
a509050b CL |
715 | /* rpcbind server doesn't support this rpcbind protocol version */ |
716 | if (status == -EPROTONOSUPPORT) | |
717 | xprt->bind_index++; | |
718 | ||
719 | if (status < 0) { | |
720 | /* rpcbind server not available on remote host? */ | |
721 | xprt->ops->set_port(xprt, 0); | |
722 | } else if (map->r_port == 0) { | |
723 | /* Requested RPC service wasn't registered on remote host */ | |
724 | xprt->ops->set_port(xprt, 0); | |
725 | status = -EACCES; | |
726 | } else { | |
727 | /* Succeeded */ | |
728 | xprt->ops->set_port(xprt, map->r_port); | |
729 | xprt_set_bound(xprt); | |
730 | status = 0; | |
731 | } | |
732 | ||
733 | dprintk("RPC: %5u rpcb_getport_done(status %d, port %u)\n", | |
734 | child->tk_pid, status, map->r_port); | |
735 | ||
381ba74a | 736 | map->r_status = status; |
a509050b CL |
737 | } |
738 | ||
166b88d7 CL |
739 | /* |
740 | * XDR functions for rpcbind | |
741 | */ | |
742 | ||
6f2c2db7 CL |
743 | static int rpcb_enc_mapping(struct rpc_rqst *req, __be32 *p, |
744 | const struct rpcbind_args *rpcb) | |
745 | { | |
746 | struct rpc_task *task = req->rq_task; | |
747 | struct xdr_stream xdr; | |
748 | ||
749 | dprintk("RPC: %5u encoding PMAP_%s call (%u, %u, %d, %u)\n", | |
750 | task->tk_pid, task->tk_msg.rpc_proc->p_name, | |
751 | rpcb->r_prog, rpcb->r_vers, rpcb->r_prot, rpcb->r_port); | |
752 | ||
753 | xdr_init_encode(&xdr, &req->rq_snd_buf, p); | |
754 | ||
755 | p = xdr_reserve_space(&xdr, sizeof(__be32) * RPCB_mappingargs_sz); | |
756 | if (unlikely(p == NULL)) | |
757 | return -EIO; | |
758 | ||
759 | *p++ = htonl(rpcb->r_prog); | |
760 | *p++ = htonl(rpcb->r_vers); | |
761 | *p++ = htonl(rpcb->r_prot); | |
762 | *p = htonl(rpcb->r_port); | |
763 | ||
764 | return 0; | |
765 | } | |
766 | ||
c0c077df CL |
767 | static int rpcb_dec_getport(struct rpc_rqst *req, __be32 *p, |
768 | struct rpcbind_args *rpcb) | |
769 | { | |
770 | struct rpc_task *task = req->rq_task; | |
771 | struct xdr_stream xdr; | |
772 | unsigned long port; | |
773 | ||
774 | xdr_init_decode(&xdr, &req->rq_rcv_buf, p); | |
775 | ||
776 | rpcb->r_port = 0; | |
777 | ||
778 | p = xdr_inline_decode(&xdr, sizeof(__be32)); | |
779 | if (unlikely(p == NULL)) | |
780 | return -EIO; | |
781 | ||
782 | port = ntohl(*p); | |
783 | dprintk("RPC: %5u PMAP_%s result: %lu\n", task->tk_pid, | |
784 | task->tk_msg.rpc_proc->p_name, port); | |
785 | if (unlikely(port > USHORT_MAX)) | |
786 | return -EIO; | |
787 | ||
788 | rpcb->r_port = port; | |
789 | return 0; | |
790 | } | |
791 | ||
7ed0ff98 CL |
792 | static int rpcb_dec_set(struct rpc_rqst *req, __be32 *p, |
793 | unsigned int *boolp) | |
794 | { | |
795 | struct rpc_task *task = req->rq_task; | |
796 | struct xdr_stream xdr; | |
797 | ||
798 | xdr_init_decode(&xdr, &req->rq_rcv_buf, p); | |
799 | ||
800 | p = xdr_inline_decode(&xdr, sizeof(__be32)); | |
801 | if (unlikely(p == NULL)) | |
802 | return -EIO; | |
803 | ||
804 | *boolp = 0; | |
805 | if (*p) | |
806 | *boolp = 1; | |
807 | ||
808 | dprintk("RPC: %5u RPCB_%s call %s\n", | |
809 | task->tk_pid, task->tk_msg.rpc_proc->p_name, | |
810 | (*boolp ? "succeeded" : "failed")); | |
811 | return 0; | |
812 | } | |
813 | ||
6f2c2db7 CL |
814 | static int encode_rpcb_string(struct xdr_stream *xdr, const char *string, |
815 | const u32 maxstrlen) | |
816 | { | |
817 | u32 len; | |
818 | __be32 *p; | |
819 | ||
820 | if (unlikely(string == NULL)) | |
821 | return -EIO; | |
822 | len = strlen(string); | |
823 | if (unlikely(len > maxstrlen)) | |
824 | return -EIO; | |
825 | ||
826 | p = xdr_reserve_space(xdr, sizeof(__be32) + len); | |
827 | if (unlikely(p == NULL)) | |
828 | return -EIO; | |
829 | xdr_encode_opaque(p, string, len); | |
830 | ||
831 | return 0; | |
832 | } | |
833 | ||
834 | static int rpcb_enc_getaddr(struct rpc_rqst *req, __be32 *p, | |
835 | const struct rpcbind_args *rpcb) | |
836 | { | |
837 | struct rpc_task *task = req->rq_task; | |
838 | struct xdr_stream xdr; | |
839 | ||
840 | dprintk("RPC: %5u encoding RPCB_%s call (%u, %u, '%s', '%s')\n", | |
841 | task->tk_pid, task->tk_msg.rpc_proc->p_name, | |
842 | rpcb->r_prog, rpcb->r_vers, | |
843 | rpcb->r_netid, rpcb->r_addr); | |
844 | ||
845 | xdr_init_encode(&xdr, &req->rq_snd_buf, p); | |
846 | ||
847 | p = xdr_reserve_space(&xdr, | |
848 | sizeof(__be32) * (RPCB_program_sz + RPCB_version_sz)); | |
849 | if (unlikely(p == NULL)) | |
850 | return -EIO; | |
851 | *p++ = htonl(rpcb->r_prog); | |
852 | *p = htonl(rpcb->r_vers); | |
853 | ||
854 | if (encode_rpcb_string(&xdr, rpcb->r_netid, RPCBIND_MAXNETIDLEN)) | |
855 | return -EIO; | |
856 | if (encode_rpcb_string(&xdr, rpcb->r_addr, RPCBIND_MAXUADDRLEN)) | |
857 | return -EIO; | |
858 | if (encode_rpcb_string(&xdr, rpcb->r_owner, RPCB_MAXOWNERLEN)) | |
859 | return -EIO; | |
860 | ||
861 | return 0; | |
862 | } | |
863 | ||
c0c077df CL |
864 | static int rpcb_dec_getaddr(struct rpc_rqst *req, __be32 *p, |
865 | struct rpcbind_args *rpcb) | |
866 | { | |
867 | struct sockaddr_storage address; | |
868 | struct sockaddr *sap = (struct sockaddr *)&address; | |
869 | struct rpc_task *task = req->rq_task; | |
870 | struct xdr_stream xdr; | |
871 | u32 len; | |
872 | ||
873 | rpcb->r_port = 0; | |
874 | ||
875 | xdr_init_decode(&xdr, &req->rq_rcv_buf, p); | |
876 | ||
877 | p = xdr_inline_decode(&xdr, sizeof(__be32)); | |
878 | if (unlikely(p == NULL)) | |
879 | goto out_fail; | |
880 | len = ntohl(*p); | |
881 | ||
882 | /* | |
883 | * If the returned universal address is a null string, | |
884 | * the requested RPC service was not registered. | |
885 | */ | |
886 | if (len == 0) { | |
887 | dprintk("RPC: %5u RPCB reply: program not registered\n", | |
888 | task->tk_pid); | |
889 | return 0; | |
890 | } | |
891 | ||
892 | if (unlikely(len > RPCBIND_MAXUADDRLEN)) | |
893 | goto out_fail; | |
894 | ||
895 | p = xdr_inline_decode(&xdr, len); | |
896 | if (unlikely(p == NULL)) | |
897 | goto out_fail; | |
898 | dprintk("RPC: %5u RPCB_%s reply: %s\n", task->tk_pid, | |
899 | task->tk_msg.rpc_proc->p_name, (char *)p); | |
900 | ||
901 | if (rpc_uaddr2sockaddr((char *)p, len, sap, sizeof(address)) == 0) | |
902 | goto out_fail; | |
903 | rpcb->r_port = rpc_get_port(sap); | |
904 | ||
905 | return 0; | |
906 | ||
907 | out_fail: | |
908 | dprintk("RPC: %5u malformed RPCB_%s reply\n", | |
909 | task->tk_pid, task->tk_msg.rpc_proc->p_name); | |
910 | return -EIO; | |
911 | } | |
912 | ||
a509050b CL |
913 | /* |
914 | * Not all rpcbind procedures described in RFC 1833 are implemented | |
915 | * since the Linux kernel RPC code requires only these. | |
916 | */ | |
f8b761ef | 917 | |
a509050b | 918 | static struct rpc_procinfo rpcb_procedures2[] = { |
f8b761ef CL |
919 | [RPCBPROC_SET] = { |
920 | .p_proc = RPCBPROC_SET, | |
921 | .p_encode = (kxdrproc_t)rpcb_enc_mapping, | |
922 | .p_decode = (kxdrproc_t)rpcb_dec_set, | |
923 | .p_arglen = RPCB_mappingargs_sz, | |
924 | .p_replen = RPCB_setres_sz, | |
925 | .p_statidx = RPCBPROC_SET, | |
926 | .p_timer = 0, | |
927 | .p_name = "SET", | |
928 | }, | |
929 | [RPCBPROC_UNSET] = { | |
930 | .p_proc = RPCBPROC_UNSET, | |
931 | .p_encode = (kxdrproc_t)rpcb_enc_mapping, | |
932 | .p_decode = (kxdrproc_t)rpcb_dec_set, | |
933 | .p_arglen = RPCB_mappingargs_sz, | |
934 | .p_replen = RPCB_setres_sz, | |
935 | .p_statidx = RPCBPROC_UNSET, | |
936 | .p_timer = 0, | |
937 | .p_name = "UNSET", | |
938 | }, | |
939 | [RPCBPROC_GETPORT] = { | |
940 | .p_proc = RPCBPROC_GETPORT, | |
941 | .p_encode = (kxdrproc_t)rpcb_enc_mapping, | |
942 | .p_decode = (kxdrproc_t)rpcb_dec_getport, | |
943 | .p_arglen = RPCB_mappingargs_sz, | |
944 | .p_replen = RPCB_getportres_sz, | |
945 | .p_statidx = RPCBPROC_GETPORT, | |
946 | .p_timer = 0, | |
947 | .p_name = "GETPORT", | |
948 | }, | |
a509050b CL |
949 | }; |
950 | ||
951 | static struct rpc_procinfo rpcb_procedures3[] = { | |
f8b761ef CL |
952 | [RPCBPROC_SET] = { |
953 | .p_proc = RPCBPROC_SET, | |
954 | .p_encode = (kxdrproc_t)rpcb_enc_getaddr, | |
955 | .p_decode = (kxdrproc_t)rpcb_dec_set, | |
956 | .p_arglen = RPCB_getaddrargs_sz, | |
957 | .p_replen = RPCB_setres_sz, | |
958 | .p_statidx = RPCBPROC_SET, | |
959 | .p_timer = 0, | |
960 | .p_name = "SET", | |
961 | }, | |
962 | [RPCBPROC_UNSET] = { | |
963 | .p_proc = RPCBPROC_UNSET, | |
964 | .p_encode = (kxdrproc_t)rpcb_enc_getaddr, | |
965 | .p_decode = (kxdrproc_t)rpcb_dec_set, | |
966 | .p_arglen = RPCB_getaddrargs_sz, | |
967 | .p_replen = RPCB_setres_sz, | |
968 | .p_statidx = RPCBPROC_UNSET, | |
969 | .p_timer = 0, | |
970 | .p_name = "UNSET", | |
971 | }, | |
972 | [RPCBPROC_GETADDR] = { | |
973 | .p_proc = RPCBPROC_GETADDR, | |
974 | .p_encode = (kxdrproc_t)rpcb_enc_getaddr, | |
975 | .p_decode = (kxdrproc_t)rpcb_dec_getaddr, | |
976 | .p_arglen = RPCB_getaddrargs_sz, | |
977 | .p_replen = RPCB_getaddrres_sz, | |
978 | .p_statidx = RPCBPROC_GETADDR, | |
979 | .p_timer = 0, | |
980 | .p_name = "GETADDR", | |
981 | }, | |
a509050b CL |
982 | }; |
983 | ||
984 | static struct rpc_procinfo rpcb_procedures4[] = { | |
f8b761ef CL |
985 | [RPCBPROC_SET] = { |
986 | .p_proc = RPCBPROC_SET, | |
987 | .p_encode = (kxdrproc_t)rpcb_enc_getaddr, | |
988 | .p_decode = (kxdrproc_t)rpcb_dec_set, | |
989 | .p_arglen = RPCB_getaddrargs_sz, | |
990 | .p_replen = RPCB_setres_sz, | |
991 | .p_statidx = RPCBPROC_SET, | |
992 | .p_timer = 0, | |
993 | .p_name = "SET", | |
994 | }, | |
995 | [RPCBPROC_UNSET] = { | |
996 | .p_proc = RPCBPROC_UNSET, | |
997 | .p_encode = (kxdrproc_t)rpcb_enc_getaddr, | |
998 | .p_decode = (kxdrproc_t)rpcb_dec_set, | |
999 | .p_arglen = RPCB_getaddrargs_sz, | |
1000 | .p_replen = RPCB_setres_sz, | |
1001 | .p_statidx = RPCBPROC_UNSET, | |
1002 | .p_timer = 0, | |
1003 | .p_name = "UNSET", | |
1004 | }, | |
1005 | [RPCBPROC_GETADDR] = { | |
1006 | .p_proc = RPCBPROC_GETADDR, | |
1007 | .p_encode = (kxdrproc_t)rpcb_enc_getaddr, | |
1008 | .p_decode = (kxdrproc_t)rpcb_dec_getaddr, | |
1009 | .p_arglen = RPCB_getaddrargs_sz, | |
1010 | .p_replen = RPCB_getaddrres_sz, | |
1011 | .p_statidx = RPCBPROC_GETADDR, | |
1012 | .p_timer = 0, | |
1013 | .p_name = "GETADDR", | |
1014 | }, | |
a509050b CL |
1015 | }; |
1016 | ||
1017 | static struct rpcb_info rpcb_next_version[] = { | |
fc200e79 CL |
1018 | { |
1019 | .rpc_vers = RPCBVERS_2, | |
1020 | .rpc_proc = &rpcb_procedures2[RPCBPROC_GETPORT], | |
1021 | }, | |
1022 | { | |
1023 | .rpc_proc = NULL, | |
1024 | }, | |
a509050b CL |
1025 | }; |
1026 | ||
d5b64430 | 1027 | static struct rpcb_info rpcb_next_version6[] = { |
fc200e79 CL |
1028 | { |
1029 | .rpc_vers = RPCBVERS_4, | |
8842413a | 1030 | .rpc_proc = &rpcb_procedures4[RPCBPROC_GETADDR], |
fc200e79 CL |
1031 | }, |
1032 | { | |
1033 | .rpc_vers = RPCBVERS_3, | |
1034 | .rpc_proc = &rpcb_procedures3[RPCBPROC_GETADDR], | |
1035 | }, | |
fc200e79 CL |
1036 | { |
1037 | .rpc_proc = NULL, | |
1038 | }, | |
d5b64430 CL |
1039 | }; |
1040 | ||
a509050b | 1041 | static struct rpc_version rpcb_version2 = { |
fc200e79 | 1042 | .number = RPCBVERS_2, |
a509050b CL |
1043 | .nrprocs = RPCB_HIGHPROC_2, |
1044 | .procs = rpcb_procedures2 | |
1045 | }; | |
1046 | ||
1047 | static struct rpc_version rpcb_version3 = { | |
fc200e79 | 1048 | .number = RPCBVERS_3, |
a509050b CL |
1049 | .nrprocs = RPCB_HIGHPROC_3, |
1050 | .procs = rpcb_procedures3 | |
1051 | }; | |
1052 | ||
1053 | static struct rpc_version rpcb_version4 = { | |
fc200e79 | 1054 | .number = RPCBVERS_4, |
a509050b CL |
1055 | .nrprocs = RPCB_HIGHPROC_4, |
1056 | .procs = rpcb_procedures4 | |
1057 | }; | |
1058 | ||
1059 | static struct rpc_version *rpcb_version[] = { | |
1060 | NULL, | |
1061 | NULL, | |
1062 | &rpcb_version2, | |
1063 | &rpcb_version3, | |
1064 | &rpcb_version4 | |
1065 | }; | |
1066 | ||
1067 | static struct rpc_stat rpcb_stats; | |
1068 | ||
7f4adeff | 1069 | static struct rpc_program rpcb_program = { |
a509050b CL |
1070 | .name = "rpcbind", |
1071 | .number = RPCBIND_PROGRAM, | |
1072 | .nrvers = ARRAY_SIZE(rpcb_version), | |
1073 | .version = rpcb_version, | |
1074 | .stats = &rpcb_stats, | |
1075 | }; | |
c526611d CL |
1076 | |
1077 | /** | |
1078 | * cleanup_rpcb_clnt - remove xprtsock's sysctls, unregister | |
1079 | * | |
1080 | */ | |
1081 | void cleanup_rpcb_clnt(void) | |
1082 | { | |
1083 | if (rpcb_local_clnt4) | |
1084 | rpc_shutdown_client(rpcb_local_clnt4); | |
1085 | if (rpcb_local_clnt) | |
1086 | rpc_shutdown_client(rpcb_local_clnt); | |
1087 | } |