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> |
dff02d49 | 26 | #include <linux/nsproxy.h> |
9d548b9c | 27 | #include <net/ipv6.h> |
a509050b CL |
28 | |
29 | #include <linux/sunrpc/clnt.h> | |
30 | #include <linux/sunrpc/sched.h> | |
0896a725 | 31 | #include <linux/sunrpc/xprtsock.h> |
a509050b | 32 | |
dff02d49 SK |
33 | #include "netns.h" |
34 | ||
a509050b CL |
35 | #ifdef RPC_DEBUG |
36 | # define RPCDBG_FACILITY RPCDBG_BIND | |
37 | #endif | |
38 | ||
7402ab19 CL |
39 | #define RPCBIND_SOCK_PATHNAME "/var/run/rpcbind.sock" |
40 | ||
a509050b CL |
41 | #define RPCBIND_PROGRAM (100000u) |
42 | #define RPCBIND_PORT (111u) | |
43 | ||
fc200e79 CL |
44 | #define RPCBVERS_2 (2u) |
45 | #define RPCBVERS_3 (3u) | |
46 | #define RPCBVERS_4 (4u) | |
47 | ||
a509050b CL |
48 | enum { |
49 | RPCBPROC_NULL, | |
50 | RPCBPROC_SET, | |
51 | RPCBPROC_UNSET, | |
52 | RPCBPROC_GETPORT, | |
53 | RPCBPROC_GETADDR = 3, /* alias for GETPORT */ | |
54 | RPCBPROC_DUMP, | |
55 | RPCBPROC_CALLIT, | |
56 | RPCBPROC_BCAST = 5, /* alias for CALLIT */ | |
57 | RPCBPROC_GETTIME, | |
58 | RPCBPROC_UADDR2TADDR, | |
59 | RPCBPROC_TADDR2UADDR, | |
60 | RPCBPROC_GETVERSADDR, | |
61 | RPCBPROC_INDIRECT, | |
62 | RPCBPROC_GETADDRLIST, | |
63 | RPCBPROC_GETSTAT, | |
64 | }; | |
65 | ||
a509050b CL |
66 | /* |
67 | * r_owner | |
68 | * | |
69 | * The "owner" is allowed to unset a service in the rpcbind database. | |
126e4bc3 CL |
70 | * |
71 | * For AF_LOCAL SET/UNSET requests, rpcbind treats this string as a | |
72 | * UID which it maps to a local user name via a password lookup. | |
73 | * In all other cases it is ignored. | |
74 | * | |
75 | * For SET/UNSET requests, user space provides a value, even for | |
76 | * network requests, and GETADDR uses an empty string. We follow | |
77 | * those precedents here. | |
a509050b | 78 | */ |
126e4bc3 | 79 | #define RPCB_OWNER_STRING "0" |
a509050b CL |
80 | #define RPCB_MAXOWNERLEN sizeof(RPCB_OWNER_STRING) |
81 | ||
0b10bf5e CL |
82 | /* |
83 | * XDR data type sizes | |
84 | */ | |
85 | #define RPCB_program_sz (1) | |
86 | #define RPCB_version_sz (1) | |
87 | #define RPCB_protocol_sz (1) | |
88 | #define RPCB_port_sz (1) | |
89 | #define RPCB_boolean_sz (1) | |
90 | ||
91 | #define RPCB_netid_sz (1 + XDR_QUADLEN(RPCBIND_MAXNETIDLEN)) | |
92 | #define RPCB_addr_sz (1 + XDR_QUADLEN(RPCBIND_MAXUADDRLEN)) | |
93 | #define RPCB_ownerstring_sz (1 + XDR_QUADLEN(RPCB_MAXOWNERLEN)) | |
94 | ||
95 | /* | |
96 | * XDR argument and result sizes | |
97 | */ | |
98 | #define RPCB_mappingargs_sz (RPCB_program_sz + RPCB_version_sz + \ | |
99 | RPCB_protocol_sz + RPCB_port_sz) | |
100 | #define RPCB_getaddrargs_sz (RPCB_program_sz + RPCB_version_sz + \ | |
101 | RPCB_netid_sz + RPCB_addr_sz + \ | |
102 | RPCB_ownerstring_sz) | |
103 | ||
104 | #define RPCB_getportres_sz RPCB_port_sz | |
105 | #define RPCB_setres_sz RPCB_boolean_sz | |
106 | ||
107 | /* | |
108 | * Note that RFC 1833 does not put any size restrictions on the | |
109 | * address string returned by the remote rpcbind database. | |
110 | */ | |
111 | #define RPCB_getaddrres_sz RPCB_addr_sz | |
112 | ||
a509050b | 113 | static void rpcb_getport_done(struct rpc_task *, void *); |
381ba74a | 114 | static void rpcb_map_release(void *data); |
a613fa16 | 115 | static const struct rpc_program rpcb_program; |
a509050b CL |
116 | |
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 | ||
a613fa16 TM |
140 | static const struct rpcb_info rpcb_next_version[]; |
141 | static const 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 | ||
2ea75a10 | 164 | static int rpcb_get_local(struct net *net) |
914edb1b SK |
165 | { |
166 | int cnt; | |
2ea75a10 | 167 | struct sunrpc_net *sn = net_generic(net, sunrpc_net_id); |
914edb1b | 168 | |
dff02d49 SK |
169 | spin_lock(&sn->rpcb_clnt_lock); |
170 | if (sn->rpcb_users) | |
171 | sn->rpcb_users++; | |
172 | cnt = sn->rpcb_users; | |
173 | spin_unlock(&sn->rpcb_clnt_lock); | |
914edb1b SK |
174 | |
175 | return cnt; | |
176 | } | |
177 | ||
f7a30c18 | 178 | void rpcb_put_local(struct net *net) |
914edb1b | 179 | { |
f7a30c18 | 180 | struct sunrpc_net *sn = net_generic(net, sunrpc_net_id); |
dff02d49 SK |
181 | struct rpc_clnt *clnt = sn->rpcb_local_clnt; |
182 | struct rpc_clnt *clnt4 = sn->rpcb_local_clnt4; | |
914edb1b SK |
183 | int shutdown; |
184 | ||
dff02d49 SK |
185 | spin_lock(&sn->rpcb_clnt_lock); |
186 | if (--sn->rpcb_users == 0) { | |
187 | sn->rpcb_local_clnt = NULL; | |
188 | sn->rpcb_local_clnt4 = NULL; | |
914edb1b | 189 | } |
dff02d49 SK |
190 | shutdown = !sn->rpcb_users; |
191 | spin_unlock(&sn->rpcb_clnt_lock); | |
914edb1b SK |
192 | |
193 | if (shutdown) { | |
194 | /* | |
195 | * cleanup_rpcb_clnt - remove xprtsock's sysctls, unregister | |
196 | */ | |
197 | if (clnt4) | |
198 | rpc_shutdown_client(clnt4); | |
199 | if (clnt) | |
200 | rpc_shutdown_client(clnt); | |
201 | } | |
202 | } | |
203 | ||
2ea75a10 SK |
204 | static void rpcb_set_local(struct net *net, struct rpc_clnt *clnt, |
205 | struct rpc_clnt *clnt4) | |
914edb1b | 206 | { |
2ea75a10 | 207 | struct sunrpc_net *sn = net_generic(net, sunrpc_net_id); |
dff02d49 | 208 | |
914edb1b | 209 | /* Protected by rpcb_create_local_mutex */ |
dff02d49 SK |
210 | sn->rpcb_local_clnt = clnt; |
211 | sn->rpcb_local_clnt4 = clnt4; | |
914edb1b | 212 | smp_wmb(); |
dff02d49 | 213 | sn->rpcb_users = 1; |
914edb1b | 214 | dprintk("RPC: created new rpcb local clients (rpcb_local_clnt: " |
2ea75a10 SK |
215 | "%p, rpcb_local_clnt4: %p) for net %p%s\n", |
216 | sn->rpcb_local_clnt, sn->rpcb_local_clnt4, | |
217 | net, (net == &init_net) ? " (init_net)" : ""); | |
914edb1b SK |
218 | } |
219 | ||
7402ab19 CL |
220 | /* |
221 | * Returns zero on success, otherwise a negative errno value | |
222 | * is returned. | |
223 | */ | |
2ea75a10 | 224 | static int rpcb_create_local_unix(struct net *net) |
7402ab19 CL |
225 | { |
226 | static const struct sockaddr_un rpcb_localaddr_rpcbind = { | |
227 | .sun_family = AF_LOCAL, | |
228 | .sun_path = RPCBIND_SOCK_PATHNAME, | |
229 | }; | |
230 | struct rpc_create_args args = { | |
2ea75a10 | 231 | .net = net, |
7402ab19 CL |
232 | .protocol = XPRT_TRANSPORT_LOCAL, |
233 | .address = (struct sockaddr *)&rpcb_localaddr_rpcbind, | |
234 | .addrsize = sizeof(rpcb_localaddr_rpcbind), | |
235 | .servername = "localhost", | |
236 | .program = &rpcb_program, | |
237 | .version = RPCBVERS_2, | |
238 | .authflavor = RPC_AUTH_NULL, | |
239 | }; | |
240 | struct rpc_clnt *clnt, *clnt4; | |
241 | int result = 0; | |
242 | ||
243 | /* | |
244 | * Because we requested an RPC PING at transport creation time, | |
245 | * this works only if the user space portmapper is rpcbind, and | |
246 | * it's listening on AF_LOCAL on the named socket. | |
247 | */ | |
248 | clnt = rpc_create(&args); | |
249 | if (IS_ERR(clnt)) { | |
250 | dprintk("RPC: failed to create AF_LOCAL rpcbind " | |
251 | "client (errno %ld).\n", PTR_ERR(clnt)); | |
252 | result = -PTR_ERR(clnt); | |
253 | goto out; | |
254 | } | |
255 | ||
256 | clnt4 = rpc_bind_new_program(clnt, &rpcb_program, RPCBVERS_4); | |
257 | if (IS_ERR(clnt4)) { | |
258 | dprintk("RPC: failed to bind second program to " | |
259 | "rpcbind v4 client (errno %ld).\n", | |
260 | PTR_ERR(clnt4)); | |
261 | clnt4 = NULL; | |
262 | } | |
263 | ||
2ea75a10 | 264 | rpcb_set_local(net, clnt, clnt4); |
cc5598b7 | 265 | |
7402ab19 CL |
266 | out: |
267 | return result; | |
268 | } | |
c526611d CL |
269 | |
270 | /* | |
271 | * Returns zero on success, otherwise a negative errno value | |
272 | * is returned. | |
273 | */ | |
2ea75a10 | 274 | static int rpcb_create_local_net(struct net *net) |
cc5598b7 | 275 | { |
7402ab19 CL |
276 | static const struct sockaddr_in rpcb_inaddr_loopback = { |
277 | .sin_family = AF_INET, | |
278 | .sin_addr.s_addr = htonl(INADDR_LOOPBACK), | |
279 | .sin_port = htons(RPCBIND_PORT), | |
280 | }; | |
cc5598b7 | 281 | struct rpc_create_args args = { |
2ea75a10 | 282 | .net = net, |
2a76b3bf | 283 | .protocol = XPRT_TRANSPORT_TCP, |
5a462115 CL |
284 | .address = (struct sockaddr *)&rpcb_inaddr_loopback, |
285 | .addrsize = sizeof(rpcb_inaddr_loopback), | |
cc5598b7 CL |
286 | .servername = "localhost", |
287 | .program = &rpcb_program, | |
c526611d | 288 | .version = RPCBVERS_2, |
cc5598b7 CL |
289 | .authflavor = RPC_AUTH_UNIX, |
290 | .flags = RPC_CLNT_CREATE_NOPING, | |
291 | }; | |
c526611d CL |
292 | struct rpc_clnt *clnt, *clnt4; |
293 | int result = 0; | |
294 | ||
c526611d CL |
295 | clnt = rpc_create(&args); |
296 | if (IS_ERR(clnt)) { | |
297 | dprintk("RPC: failed to create local rpcbind " | |
298 | "client (errno %ld).\n", PTR_ERR(clnt)); | |
299 | result = -PTR_ERR(clnt); | |
300 | goto out; | |
301 | } | |
cc5598b7 | 302 | |
c526611d CL |
303 | /* |
304 | * This results in an RPC ping. On systems running portmapper, | |
305 | * the v4 ping will fail. Proceed anyway, but disallow rpcb | |
306 | * v4 upcalls. | |
307 | */ | |
308 | clnt4 = rpc_bind_new_program(clnt, &rpcb_program, RPCBVERS_4); | |
309 | if (IS_ERR(clnt4)) { | |
38359352 CL |
310 | dprintk("RPC: failed to bind second program to " |
311 | "rpcbind v4 client (errno %ld).\n", | |
312 | PTR_ERR(clnt4)); | |
c526611d CL |
313 | clnt4 = NULL; |
314 | } | |
315 | ||
2ea75a10 | 316 | rpcb_set_local(net, clnt, clnt4); |
c526611d | 317 | |
7402ab19 CL |
318 | out: |
319 | return result; | |
320 | } | |
321 | ||
322 | /* | |
323 | * Returns zero on success, otherwise a negative errno value | |
324 | * is returned. | |
325 | */ | |
f7a30c18 | 326 | int rpcb_create_local(struct net *net) |
7402ab19 CL |
327 | { |
328 | static DEFINE_MUTEX(rpcb_create_local_mutex); | |
329 | int result = 0; | |
330 | ||
2ea75a10 | 331 | if (rpcb_get_local(net)) |
7402ab19 CL |
332 | return result; |
333 | ||
334 | mutex_lock(&rpcb_create_local_mutex); | |
2ea75a10 | 335 | if (rpcb_get_local(net)) |
7402ab19 CL |
336 | goto out; |
337 | ||
2ea75a10 SK |
338 | if (rpcb_create_local_unix(net) != 0) |
339 | result = rpcb_create_local_net(net); | |
7402ab19 | 340 | |
c526611d CL |
341 | out: |
342 | mutex_unlock(&rpcb_create_local_mutex); | |
343 | return result; | |
cc5598b7 CL |
344 | } |
345 | ||
6eac7d3f | 346 | static struct rpc_clnt *rpcb_create(struct net *net, const char *hostname, |
c2550e07 SK |
347 | struct sockaddr *srvaddr, size_t salen, |
348 | int proto, u32 version) | |
a509050b CL |
349 | { |
350 | struct rpc_create_args args = { | |
c2550e07 | 351 | .net = net, |
a509050b CL |
352 | .protocol = proto, |
353 | .address = srvaddr, | |
9f6ad26d | 354 | .addrsize = salen, |
a509050b CL |
355 | .servername = hostname, |
356 | .program = &rpcb_program, | |
357 | .version = version, | |
358 | .authflavor = RPC_AUTH_UNIX, | |
423d8b06 CL |
359 | .flags = (RPC_CLNT_CREATE_NOPING | |
360 | RPC_CLNT_CREATE_NONPRIVPORT), | |
a509050b CL |
361 | }; |
362 | ||
d5b64430 CL |
363 | switch (srvaddr->sa_family) { |
364 | case AF_INET: | |
365 | ((struct sockaddr_in *)srvaddr)->sin_port = htons(RPCBIND_PORT); | |
366 | break; | |
367 | case AF_INET6: | |
368 | ((struct sockaddr_in6 *)srvaddr)->sin6_port = htons(RPCBIND_PORT); | |
369 | break; | |
370 | default: | |
c636b572 | 371 | return ERR_PTR(-EAFNOSUPPORT); |
d5b64430 CL |
372 | } |
373 | ||
a509050b CL |
374 | return rpc_create(&args); |
375 | } | |
376 | ||
c526611d | 377 | static int rpcb_register_call(struct rpc_clnt *clnt, struct rpc_message *msg) |
babe80eb | 378 | { |
14aeb211 | 379 | int result, error = 0; |
babe80eb | 380 | |
14aeb211 | 381 | msg->rpc_resp = &result; |
babe80eb | 382 | |
2a76b3bf | 383 | error = rpc_call_sync(clnt, msg, RPC_TASK_SOFTCONN); |
14aeb211 | 384 | if (error < 0) { |
363f724c | 385 | dprintk("RPC: failed to contact local rpcbind " |
babe80eb | 386 | "server (errno %d).\n", -error); |
14aeb211 CL |
387 | return error; |
388 | } | |
389 | ||
db820d63 | 390 | if (!result) |
14aeb211 | 391 | return -EACCES; |
14aeb211 | 392 | return 0; |
babe80eb CL |
393 | } |
394 | ||
a509050b CL |
395 | /** |
396 | * rpcb_register - set or unset a port registration with the local rpcbind svc | |
397 | * @prog: RPC program number to bind | |
398 | * @vers: RPC version number to bind | |
c2e1b09f | 399 | * @prot: transport protocol to register |
a509050b | 400 | * @port: port value to register |
14aeb211 CL |
401 | * |
402 | * Returns zero if the registration request was dispatched successfully | |
403 | * and the rpcbind daemon returned success. Otherwise, returns an errno | |
404 | * value that reflects the nature of the error (request could not be | |
405 | * dispatched, timed out, or rpcbind returned an error). | |
c2e1b09f CL |
406 | * |
407 | * RPC services invoke this function to advertise their contact | |
408 | * information via the system's rpcbind daemon. RPC services | |
409 | * invoke this function once for each [program, version, transport] | |
410 | * tuple they wish to advertise. | |
411 | * | |
412 | * Callers may also unregister RPC services that are no longer | |
413 | * available by setting the passed-in port to zero. This removes | |
414 | * all registered transports for [program, version] from the local | |
415 | * rpcbind database. | |
416 | * | |
c2e1b09f CL |
417 | * This function uses rpcbind protocol version 2 to contact the |
418 | * local rpcbind daemon. | |
419 | * | |
420 | * Registration works over both AF_INET and AF_INET6, and services | |
421 | * registered via this function are advertised as available for any | |
422 | * address. If the local rpcbind daemon is listening on AF_INET6, | |
423 | * services registered via this function will be advertised on | |
424 | * IN6ADDR_ANY (ie available for all AF_INET and AF_INET6 | |
425 | * addresses). | |
a509050b | 426 | */ |
977ac315 | 427 | int rpcb_register(struct net *net, u32 prog, u32 vers, int prot, unsigned short port) |
a509050b | 428 | { |
a509050b CL |
429 | struct rpcbind_args map = { |
430 | .r_prog = prog, | |
431 | .r_vers = vers, | |
432 | .r_prot = prot, | |
433 | .r_port = port, | |
434 | }; | |
435 | struct rpc_message msg = { | |
a509050b | 436 | .rpc_argp = &map, |
a509050b | 437 | }; |
977ac315 | 438 | struct sunrpc_net *sn = net_generic(net, sunrpc_net_id); |
a509050b CL |
439 | |
440 | dprintk("RPC: %sregistering (%u, %u, %d, %u) with local " | |
441 | "rpcbind\n", (port ? "" : "un"), | |
442 | prog, vers, prot, port); | |
443 | ||
babe80eb CL |
444 | msg.rpc_proc = &rpcb_procedures2[RPCBPROC_UNSET]; |
445 | if (port) | |
446 | msg.rpc_proc = &rpcb_procedures2[RPCBPROC_SET]; | |
a509050b | 447 | |
dff02d49 | 448 | return rpcb_register_call(sn->rpcb_local_clnt, &msg); |
a509050b CL |
449 | } |
450 | ||
c2e1b09f CL |
451 | /* |
452 | * Fill in AF_INET family-specific arguments to register | |
453 | */ | |
1a114a66 SK |
454 | static int rpcb_register_inet4(struct sunrpc_net *sn, |
455 | const struct sockaddr *sap, | |
1673d0de | 456 | struct rpc_message *msg) |
c2e1b09f | 457 | { |
3aba4553 | 458 | const struct sockaddr_in *sin = (const struct sockaddr_in *)sap; |
c2e1b09f | 459 | struct rpcbind_args *map = msg->rpc_argp; |
3aba4553 | 460 | unsigned short port = ntohs(sin->sin_port); |
ba809130 | 461 | int result; |
c2e1b09f | 462 | |
d77385f2 | 463 | map->r_addr = rpc_sockaddr2uaddr(sap, GFP_KERNEL); |
c2e1b09f CL |
464 | |
465 | dprintk("RPC: %sregistering [%u, %u, %s, '%s'] with " | |
466 | "local rpcbind\n", (port ? "" : "un"), | |
467 | map->r_prog, map->r_vers, | |
468 | map->r_addr, map->r_netid); | |
469 | ||
470 | msg->rpc_proc = &rpcb_procedures4[RPCBPROC_UNSET]; | |
471 | if (port) | |
472 | msg->rpc_proc = &rpcb_procedures4[RPCBPROC_SET]; | |
473 | ||
dff02d49 | 474 | result = rpcb_register_call(sn->rpcb_local_clnt4, msg); |
ba809130 CL |
475 | kfree(map->r_addr); |
476 | return result; | |
c2e1b09f CL |
477 | } |
478 | ||
479 | /* | |
480 | * Fill in AF_INET6 family-specific arguments to register | |
481 | */ | |
1a114a66 SK |
482 | static int rpcb_register_inet6(struct sunrpc_net *sn, |
483 | const struct sockaddr *sap, | |
1673d0de | 484 | struct rpc_message *msg) |
c2e1b09f | 485 | { |
3aba4553 | 486 | const struct sockaddr_in6 *sin6 = (const struct sockaddr_in6 *)sap; |
c2e1b09f | 487 | struct rpcbind_args *map = msg->rpc_argp; |
3aba4553 | 488 | unsigned short port = ntohs(sin6->sin6_port); |
ba809130 | 489 | int result; |
c2e1b09f | 490 | |
d77385f2 | 491 | map->r_addr = rpc_sockaddr2uaddr(sap, GFP_KERNEL); |
c2e1b09f CL |
492 | |
493 | dprintk("RPC: %sregistering [%u, %u, %s, '%s'] with " | |
494 | "local rpcbind\n", (port ? "" : "un"), | |
495 | map->r_prog, map->r_vers, | |
496 | map->r_addr, map->r_netid); | |
497 | ||
498 | msg->rpc_proc = &rpcb_procedures4[RPCBPROC_UNSET]; | |
499 | if (port) | |
500 | msg->rpc_proc = &rpcb_procedures4[RPCBPROC_SET]; | |
501 | ||
dff02d49 | 502 | result = rpcb_register_call(sn->rpcb_local_clnt4, msg); |
ba809130 CL |
503 | kfree(map->r_addr); |
504 | return result; | |
c2e1b09f CL |
505 | } |
506 | ||
1a114a66 SK |
507 | static int rpcb_unregister_all_protofamilies(struct sunrpc_net *sn, |
508 | struct rpc_message *msg) | |
1673d0de CL |
509 | { |
510 | struct rpcbind_args *map = msg->rpc_argp; | |
511 | ||
512 | dprintk("RPC: unregistering [%u, %u, '%s'] with " | |
513 | "local rpcbind\n", | |
514 | map->r_prog, map->r_vers, map->r_netid); | |
515 | ||
516 | map->r_addr = ""; | |
517 | msg->rpc_proc = &rpcb_procedures4[RPCBPROC_UNSET]; | |
518 | ||
dff02d49 | 519 | return rpcb_register_call(sn->rpcb_local_clnt4, msg); |
1673d0de CL |
520 | } |
521 | ||
c2e1b09f CL |
522 | /** |
523 | * rpcb_v4_register - set or unset a port registration with the local rpcbind | |
524 | * @program: RPC program number of service to (un)register | |
525 | * @version: RPC version number of service to (un)register | |
526 | * @address: address family, IP address, and port to (un)register | |
527 | * @netid: netid of transport protocol to (un)register | |
14aeb211 CL |
528 | * |
529 | * Returns zero if the registration request was dispatched successfully | |
530 | * and the rpcbind daemon returned success. Otherwise, returns an errno | |
531 | * value that reflects the nature of the error (request could not be | |
532 | * dispatched, timed out, or rpcbind returned an error). | |
c2e1b09f CL |
533 | * |
534 | * RPC services invoke this function to advertise their contact | |
535 | * information via the system's rpcbind daemon. RPC services | |
536 | * invoke this function once for each [program, version, address, | |
537 | * netid] tuple they wish to advertise. | |
538 | * | |
1673d0de CL |
539 | * Callers may also unregister RPC services that are registered at a |
540 | * specific address by setting the port number in @address to zero. | |
541 | * They may unregister all registered protocol families at once for | |
542 | * a service by passing a NULL @address argument. If @netid is "" | |
543 | * then all netids for [program, version, address] are unregistered. | |
c2e1b09f | 544 | * |
c2e1b09f CL |
545 | * This function uses rpcbind protocol version 4 to contact the |
546 | * local rpcbind daemon. The local rpcbind daemon must support | |
547 | * version 4 of the rpcbind protocol in order for these functions | |
548 | * to register a service successfully. | |
549 | * | |
550 | * Supported netids include "udp" and "tcp" for UDP and TCP over | |
551 | * IPv4, and "udp6" and "tcp6" for UDP and TCP over IPv6, | |
552 | * respectively. | |
553 | * | |
554 | * The contents of @address determine the address family and the | |
555 | * port to be registered. The usual practice is to pass INADDR_ANY | |
556 | * as the raw address, but specifying a non-zero address is also | |
557 | * supported by this API if the caller wishes to advertise an RPC | |
558 | * service on a specific network interface. | |
559 | * | |
560 | * Note that passing in INADDR_ANY does not create the same service | |
561 | * registration as IN6ADDR_ANY. The former advertises an RPC | |
562 | * service on any IPv4 address, but not on IPv6. The latter | |
563 | * advertises the service on all IPv4 and IPv6 addresses. | |
564 | */ | |
977ac315 | 565 | int rpcb_v4_register(struct net *net, const u32 program, const u32 version, |
14aeb211 | 566 | const struct sockaddr *address, const char *netid) |
c2e1b09f CL |
567 | { |
568 | struct rpcbind_args map = { | |
569 | .r_prog = program, | |
570 | .r_vers = version, | |
571 | .r_netid = netid, | |
572 | .r_owner = RPCB_OWNER_STRING, | |
573 | }; | |
574 | struct rpc_message msg = { | |
575 | .rpc_argp = &map, | |
c2e1b09f | 576 | }; |
977ac315 | 577 | struct sunrpc_net *sn = net_generic(net, sunrpc_net_id); |
c526611d | 578 | |
dff02d49 | 579 | if (sn->rpcb_local_clnt4 == NULL) |
c526611d | 580 | return -EPROTONOSUPPORT; |
c2e1b09f | 581 | |
1673d0de | 582 | if (address == NULL) |
1a114a66 | 583 | return rpcb_unregister_all_protofamilies(sn, &msg); |
1673d0de | 584 | |
c2e1b09f CL |
585 | switch (address->sa_family) { |
586 | case AF_INET: | |
1a114a66 | 587 | return rpcb_register_inet4(sn, address, &msg); |
c2e1b09f | 588 | case AF_INET6: |
1a114a66 | 589 | return rpcb_register_inet6(sn, address, &msg); |
c2e1b09f CL |
590 | } |
591 | ||
592 | return -EAFNOSUPPORT; | |
593 | } | |
594 | ||
803a9067 | 595 | static struct rpc_task *rpcb_call_async(struct rpc_clnt *rpcb_clnt, struct rpcbind_args *map, struct rpc_procinfo *proc) |
5138fde0 TM |
596 | { |
597 | struct rpc_message msg = { | |
803a9067 | 598 | .rpc_proc = proc, |
5138fde0 | 599 | .rpc_argp = map, |
c0c077df | 600 | .rpc_resp = map, |
5138fde0 TM |
601 | }; |
602 | struct rpc_task_setup task_setup_data = { | |
603 | .rpc_client = rpcb_clnt, | |
604 | .rpc_message = &msg, | |
605 | .callback_ops = &rpcb_getport_ops, | |
606 | .callback_data = map, | |
012da158 | 607 | .flags = RPC_TASK_ASYNC | RPC_TASK_SOFTCONN, |
5138fde0 TM |
608 | }; |
609 | ||
610 | return rpc_run_task(&task_setup_data); | |
611 | } | |
612 | ||
9a4bd29f TM |
613 | /* |
614 | * In the case where rpc clients have been cloned, we want to make | |
615 | * sure that we use the program number/version etc of the actual | |
616 | * owner of the xprt. To do so, we walk back up the tree of parents | |
617 | * to find whoever created the transport and/or whoever has the | |
618 | * autobind flag set. | |
619 | */ | |
620 | static struct rpc_clnt *rpcb_find_transport_owner(struct rpc_clnt *clnt) | |
621 | { | |
622 | struct rpc_clnt *parent = clnt->cl_parent; | |
2446ab60 | 623 | struct rpc_xprt *xprt = rcu_dereference(clnt->cl_xprt); |
9a4bd29f TM |
624 | |
625 | while (parent != clnt) { | |
2446ab60 | 626 | if (rcu_dereference(parent->cl_xprt) != xprt) |
9a4bd29f TM |
627 | break; |
628 | if (clnt->cl_autobind) | |
629 | break; | |
630 | clnt = parent; | |
631 | parent = parent->cl_parent; | |
632 | } | |
633 | return clnt; | |
634 | } | |
635 | ||
a509050b | 636 | /** |
45160d62 | 637 | * rpcb_getport_async - obtain the port for a given RPC service on a given host |
a509050b CL |
638 | * @task: task that is waiting for portmapper request |
639 | * | |
640 | * This one can be called for an ongoing RPC request, and can be used in | |
641 | * an async (rpciod) context. | |
642 | */ | |
45160d62 | 643 | void rpcb_getport_async(struct rpc_task *task) |
a509050b | 644 | { |
9a4bd29f | 645 | struct rpc_clnt *clnt; |
803a9067 | 646 | struct rpc_procinfo *proc; |
0a48f5d7 | 647 | u32 bind_version; |
9a4bd29f | 648 | struct rpc_xprt *xprt; |
a509050b | 649 | struct rpc_clnt *rpcb_clnt; |
ec0dd267 | 650 | struct rpcbind_args *map; |
a509050b | 651 | struct rpc_task *child; |
9f6ad26d CL |
652 | struct sockaddr_storage addr; |
653 | struct sockaddr *sap = (struct sockaddr *)&addr; | |
654 | size_t salen; | |
a509050b CL |
655 | int status; |
656 | ||
2446ab60 TM |
657 | rcu_read_lock(); |
658 | do { | |
659 | clnt = rpcb_find_transport_owner(task->tk_client); | |
660 | xprt = xprt_get(rcu_dereference(clnt->cl_xprt)); | |
661 | } while (xprt == NULL); | |
662 | rcu_read_unlock(); | |
9a4bd29f | 663 | |
45160d62 | 664 | dprintk("RPC: %5u %s(%s, %u, %u, %d)\n", |
0dc47877 | 665 | task->tk_pid, __func__, |
4e0038b6 | 666 | xprt->servername, clnt->cl_prog, clnt->cl_vers, xprt->prot); |
a509050b | 667 | |
381ba74a TM |
668 | /* Put self on the wait queue to ensure we get notified if |
669 | * some other task is already attempting to bind the port */ | |
670 | rpc_sleep_on(&xprt->binding, task, NULL); | |
671 | ||
a509050b | 672 | if (xprt_test_and_set_binding(xprt)) { |
45160d62 | 673 | dprintk("RPC: %5u %s: waiting for another binder\n", |
0dc47877 | 674 | task->tk_pid, __func__); |
2446ab60 | 675 | xprt_put(xprt); |
381ba74a | 676 | return; |
a509050b CL |
677 | } |
678 | ||
a509050b CL |
679 | /* Someone else may have bound if we slept */ |
680 | if (xprt_bound(xprt)) { | |
681 | status = 0; | |
45160d62 | 682 | dprintk("RPC: %5u %s: already bound\n", |
0dc47877 | 683 | task->tk_pid, __func__); |
a509050b CL |
684 | goto bailout_nofree; |
685 | } | |
686 | ||
ba809130 | 687 | /* Parent transport's destination address */ |
9f6ad26d | 688 | salen = rpc_peeraddr(clnt, sap, sizeof(addr)); |
d5b64430 CL |
689 | |
690 | /* Don't ever use rpcbind v2 for AF_INET6 requests */ | |
9f6ad26d | 691 | switch (sap->sa_family) { |
d5b64430 | 692 | case AF_INET: |
803a9067 TM |
693 | proc = rpcb_next_version[xprt->bind_index].rpc_proc; |
694 | bind_version = rpcb_next_version[xprt->bind_index].rpc_vers; | |
d5b64430 CL |
695 | break; |
696 | case AF_INET6: | |
803a9067 TM |
697 | proc = rpcb_next_version6[xprt->bind_index].rpc_proc; |
698 | bind_version = rpcb_next_version6[xprt->bind_index].rpc_vers; | |
d5b64430 CL |
699 | break; |
700 | default: | |
701 | status = -EAFNOSUPPORT; | |
702 | dprintk("RPC: %5u %s: bad address family\n", | |
0dc47877 | 703 | task->tk_pid, __func__); |
d5b64430 CL |
704 | goto bailout_nofree; |
705 | } | |
803a9067 | 706 | if (proc == NULL) { |
a509050b | 707 | xprt->bind_index = 0; |
906462af | 708 | status = -EPFNOSUPPORT; |
45160d62 | 709 | dprintk("RPC: %5u %s: no more getport versions available\n", |
0dc47877 | 710 | task->tk_pid, __func__); |
a509050b CL |
711 | goto bailout_nofree; |
712 | } | |
a509050b | 713 | |
45160d62 | 714 | dprintk("RPC: %5u %s: trying rpcbind version %u\n", |
0dc47877 | 715 | task->tk_pid, __func__, bind_version); |
a509050b | 716 | |
4e0038b6 | 717 | rpcb_clnt = rpcb_create(xprt->xprt_net, xprt->servername, sap, salen, |
c2550e07 | 718 | xprt->prot, bind_version); |
143b6c40 CL |
719 | if (IS_ERR(rpcb_clnt)) { |
720 | status = PTR_ERR(rpcb_clnt); | |
721 | dprintk("RPC: %5u %s: rpcb_create failed, error %ld\n", | |
0dc47877 | 722 | task->tk_pid, __func__, PTR_ERR(rpcb_clnt)); |
143b6c40 CL |
723 | goto bailout_nofree; |
724 | } | |
725 | ||
a509050b CL |
726 | map = kzalloc(sizeof(struct rpcbind_args), GFP_ATOMIC); |
727 | if (!map) { | |
728 | status = -ENOMEM; | |
45160d62 | 729 | dprintk("RPC: %5u %s: no memory available\n", |
0dc47877 | 730 | task->tk_pid, __func__); |
96165e2b | 731 | goto bailout_release_client; |
a509050b CL |
732 | } |
733 | map->r_prog = clnt->cl_prog; | |
734 | map->r_vers = clnt->cl_vers; | |
735 | map->r_prot = xprt->prot; | |
736 | map->r_port = 0; | |
737 | map->r_xprt = xprt_get(xprt); | |
381ba74a | 738 | map->r_status = -EIO; |
a509050b | 739 | |
ba809130 CL |
740 | switch (bind_version) { |
741 | case RPCBVERS_4: | |
742 | case RPCBVERS_3: | |
2446ab60 | 743 | map->r_netid = xprt->address_strings[RPC_DISPLAY_NETID]; |
d77385f2 | 744 | map->r_addr = rpc_sockaddr2uaddr(sap, GFP_ATOMIC); |
ba809130 CL |
745 | map->r_owner = ""; |
746 | break; | |
747 | case RPCBVERS_2: | |
748 | map->r_addr = NULL; | |
749 | break; | |
750 | default: | |
751 | BUG(); | |
752 | } | |
753 | ||
803a9067 | 754 | child = rpcb_call_async(rpcb_clnt, map, proc); |
4c402b40 | 755 | rpc_release_client(rpcb_clnt); |
a509050b | 756 | if (IS_ERR(child)) { |
0d3a34b4 | 757 | /* rpcb_map_release() has freed the arguments */ |
45160d62 | 758 | dprintk("RPC: %5u %s: rpc_run_task failed\n", |
0dc47877 | 759 | task->tk_pid, __func__); |
381ba74a | 760 | return; |
a509050b | 761 | } |
a509050b | 762 | |
9a4bd29f TM |
763 | xprt->stat.bind_count++; |
764 | rpc_put_task(child); | |
a509050b CL |
765 | return; |
766 | ||
96165e2b TM |
767 | bailout_release_client: |
768 | rpc_release_client(rpcb_clnt); | |
a509050b CL |
769 | bailout_nofree: |
770 | rpcb_wake_rpcbind_waiters(xprt, status); | |
a509050b | 771 | task->tk_status = status; |
2446ab60 | 772 | xprt_put(xprt); |
a509050b | 773 | } |
12444809 | 774 | EXPORT_SYMBOL_GPL(rpcb_getport_async); |
a509050b CL |
775 | |
776 | /* | |
777 | * Rpcbind child task calls this callback via tk_exit. | |
778 | */ | |
779 | static void rpcb_getport_done(struct rpc_task *child, void *data) | |
780 | { | |
781 | struct rpcbind_args *map = data; | |
782 | struct rpc_xprt *xprt = map->r_xprt; | |
783 | int status = child->tk_status; | |
784 | ||
4784cb51 CL |
785 | /* Garbage reply: retry with a lesser rpcbind version */ |
786 | if (status == -EIO) | |
787 | status = -EPROTONOSUPPORT; | |
788 | ||
a509050b CL |
789 | /* rpcbind server doesn't support this rpcbind protocol version */ |
790 | if (status == -EPROTONOSUPPORT) | |
791 | xprt->bind_index++; | |
792 | ||
793 | if (status < 0) { | |
794 | /* rpcbind server not available on remote host? */ | |
795 | xprt->ops->set_port(xprt, 0); | |
796 | } else if (map->r_port == 0) { | |
797 | /* Requested RPC service wasn't registered on remote host */ | |
798 | xprt->ops->set_port(xprt, 0); | |
799 | status = -EACCES; | |
800 | } else { | |
801 | /* Succeeded */ | |
802 | xprt->ops->set_port(xprt, map->r_port); | |
803 | xprt_set_bound(xprt); | |
804 | status = 0; | |
805 | } | |
806 | ||
807 | dprintk("RPC: %5u rpcb_getport_done(status %d, port %u)\n", | |
808 | child->tk_pid, status, map->r_port); | |
809 | ||
381ba74a | 810 | map->r_status = status; |
a509050b CL |
811 | } |
812 | ||
166b88d7 CL |
813 | /* |
814 | * XDR functions for rpcbind | |
815 | */ | |
816 | ||
9f06c719 CL |
817 | static void rpcb_enc_mapping(struct rpc_rqst *req, struct xdr_stream *xdr, |
818 | const struct rpcbind_args *rpcb) | |
6f2c2db7 | 819 | { |
9f06c719 | 820 | __be32 *p; |
6f2c2db7 CL |
821 | |
822 | dprintk("RPC: %5u encoding PMAP_%s call (%u, %u, %d, %u)\n", | |
ffa94db6 TM |
823 | req->rq_task->tk_pid, |
824 | req->rq_task->tk_msg.rpc_proc->p_name, | |
6f2c2db7 CL |
825 | rpcb->r_prog, rpcb->r_vers, rpcb->r_prot, rpcb->r_port); |
826 | ||
9f06c719 | 827 | p = xdr_reserve_space(xdr, RPCB_mappingargs_sz << 2); |
4129ccf3 CL |
828 | *p++ = cpu_to_be32(rpcb->r_prog); |
829 | *p++ = cpu_to_be32(rpcb->r_vers); | |
830 | *p++ = cpu_to_be32(rpcb->r_prot); | |
831 | *p = cpu_to_be32(rpcb->r_port); | |
6f2c2db7 CL |
832 | } |
833 | ||
bf269551 | 834 | static int rpcb_dec_getport(struct rpc_rqst *req, struct xdr_stream *xdr, |
c0c077df CL |
835 | struct rpcbind_args *rpcb) |
836 | { | |
c0c077df | 837 | unsigned long port; |
bf269551 | 838 | __be32 *p; |
c0c077df CL |
839 | |
840 | rpcb->r_port = 0; | |
841 | ||
bf269551 | 842 | p = xdr_inline_decode(xdr, 4); |
c0c077df CL |
843 | if (unlikely(p == NULL)) |
844 | return -EIO; | |
845 | ||
4129ccf3 | 846 | port = be32_to_cpup(p); |
ffa94db6 TM |
847 | dprintk("RPC: %5u PMAP_%s result: %lu\n", req->rq_task->tk_pid, |
848 | req->rq_task->tk_msg.rpc_proc->p_name, port); | |
4be929be | 849 | if (unlikely(port > USHRT_MAX)) |
c0c077df CL |
850 | return -EIO; |
851 | ||
852 | rpcb->r_port = port; | |
853 | return 0; | |
854 | } | |
855 | ||
bf269551 | 856 | static int rpcb_dec_set(struct rpc_rqst *req, struct xdr_stream *xdr, |
7ed0ff98 CL |
857 | unsigned int *boolp) |
858 | { | |
bf269551 | 859 | __be32 *p; |
7ed0ff98 | 860 | |
bf269551 | 861 | p = xdr_inline_decode(xdr, 4); |
7ed0ff98 CL |
862 | if (unlikely(p == NULL)) |
863 | return -EIO; | |
864 | ||
865 | *boolp = 0; | |
bf269551 | 866 | if (*p != xdr_zero) |
7ed0ff98 CL |
867 | *boolp = 1; |
868 | ||
869 | dprintk("RPC: %5u RPCB_%s call %s\n", | |
ffa94db6 TM |
870 | req->rq_task->tk_pid, |
871 | req->rq_task->tk_msg.rpc_proc->p_name, | |
7ed0ff98 CL |
872 | (*boolp ? "succeeded" : "failed")); |
873 | return 0; | |
874 | } | |
875 | ||
4129ccf3 CL |
876 | static void encode_rpcb_string(struct xdr_stream *xdr, const char *string, |
877 | const u32 maxstrlen) | |
6f2c2db7 | 878 | { |
6f2c2db7 | 879 | __be32 *p; |
4129ccf3 | 880 | u32 len; |
6f2c2db7 | 881 | |
6f2c2db7 | 882 | len = strlen(string); |
4129ccf3 CL |
883 | BUG_ON(len > maxstrlen); |
884 | p = xdr_reserve_space(xdr, 4 + len); | |
6f2c2db7 | 885 | xdr_encode_opaque(p, string, len); |
6f2c2db7 CL |
886 | } |
887 | ||
9f06c719 CL |
888 | static void rpcb_enc_getaddr(struct rpc_rqst *req, struct xdr_stream *xdr, |
889 | const struct rpcbind_args *rpcb) | |
6f2c2db7 | 890 | { |
9f06c719 | 891 | __be32 *p; |
6f2c2db7 CL |
892 | |
893 | dprintk("RPC: %5u encoding RPCB_%s call (%u, %u, '%s', '%s')\n", | |
ffa94db6 TM |
894 | req->rq_task->tk_pid, |
895 | req->rq_task->tk_msg.rpc_proc->p_name, | |
6f2c2db7 CL |
896 | rpcb->r_prog, rpcb->r_vers, |
897 | rpcb->r_netid, rpcb->r_addr); | |
898 | ||
9f06c719 | 899 | p = xdr_reserve_space(xdr, (RPCB_program_sz + RPCB_version_sz) << 2); |
4129ccf3 CL |
900 | *p++ = cpu_to_be32(rpcb->r_prog); |
901 | *p = cpu_to_be32(rpcb->r_vers); | |
6f2c2db7 | 902 | |
9f06c719 CL |
903 | encode_rpcb_string(xdr, rpcb->r_netid, RPCBIND_MAXNETIDLEN); |
904 | encode_rpcb_string(xdr, rpcb->r_addr, RPCBIND_MAXUADDRLEN); | |
905 | encode_rpcb_string(xdr, rpcb->r_owner, RPCB_MAXOWNERLEN); | |
6f2c2db7 CL |
906 | } |
907 | ||
bf269551 | 908 | static int rpcb_dec_getaddr(struct rpc_rqst *req, struct xdr_stream *xdr, |
c0c077df CL |
909 | struct rpcbind_args *rpcb) |
910 | { | |
911 | struct sockaddr_storage address; | |
912 | struct sockaddr *sap = (struct sockaddr *)&address; | |
bf269551 | 913 | __be32 *p; |
c0c077df CL |
914 | u32 len; |
915 | ||
916 | rpcb->r_port = 0; | |
917 | ||
bf269551 | 918 | p = xdr_inline_decode(xdr, 4); |
c0c077df CL |
919 | if (unlikely(p == NULL)) |
920 | goto out_fail; | |
4129ccf3 | 921 | len = be32_to_cpup(p); |
c0c077df CL |
922 | |
923 | /* | |
924 | * If the returned universal address is a null string, | |
925 | * the requested RPC service was not registered. | |
926 | */ | |
927 | if (len == 0) { | |
928 | dprintk("RPC: %5u RPCB reply: program not registered\n", | |
ffa94db6 | 929 | req->rq_task->tk_pid); |
c0c077df CL |
930 | return 0; |
931 | } | |
932 | ||
933 | if (unlikely(len > RPCBIND_MAXUADDRLEN)) | |
934 | goto out_fail; | |
935 | ||
bf269551 | 936 | p = xdr_inline_decode(xdr, len); |
c0c077df CL |
937 | if (unlikely(p == NULL)) |
938 | goto out_fail; | |
ffa94db6 TM |
939 | dprintk("RPC: %5u RPCB_%s reply: %s\n", req->rq_task->tk_pid, |
940 | req->rq_task->tk_msg.rpc_proc->p_name, (char *)p); | |
c0c077df | 941 | |
b030fb0b SK |
942 | if (rpc_uaddr2sockaddr(req->rq_xprt->xprt_net, (char *)p, len, |
943 | sap, sizeof(address)) == 0) | |
c0c077df CL |
944 | goto out_fail; |
945 | rpcb->r_port = rpc_get_port(sap); | |
946 | ||
947 | return 0; | |
948 | ||
949 | out_fail: | |
950 | dprintk("RPC: %5u malformed RPCB_%s reply\n", | |
ffa94db6 TM |
951 | req->rq_task->tk_pid, |
952 | req->rq_task->tk_msg.rpc_proc->p_name); | |
c0c077df CL |
953 | return -EIO; |
954 | } | |
955 | ||
a509050b CL |
956 | /* |
957 | * Not all rpcbind procedures described in RFC 1833 are implemented | |
958 | * since the Linux kernel RPC code requires only these. | |
959 | */ | |
f8b761ef | 960 | |
a509050b | 961 | static struct rpc_procinfo rpcb_procedures2[] = { |
f8b761ef CL |
962 | [RPCBPROC_SET] = { |
963 | .p_proc = RPCBPROC_SET, | |
9f06c719 | 964 | .p_encode = (kxdreproc_t)rpcb_enc_mapping, |
bf269551 | 965 | .p_decode = (kxdrdproc_t)rpcb_dec_set, |
f8b761ef CL |
966 | .p_arglen = RPCB_mappingargs_sz, |
967 | .p_replen = RPCB_setres_sz, | |
968 | .p_statidx = RPCBPROC_SET, | |
969 | .p_timer = 0, | |
970 | .p_name = "SET", | |
971 | }, | |
972 | [RPCBPROC_UNSET] = { | |
973 | .p_proc = RPCBPROC_UNSET, | |
9f06c719 | 974 | .p_encode = (kxdreproc_t)rpcb_enc_mapping, |
bf269551 | 975 | .p_decode = (kxdrdproc_t)rpcb_dec_set, |
f8b761ef CL |
976 | .p_arglen = RPCB_mappingargs_sz, |
977 | .p_replen = RPCB_setres_sz, | |
978 | .p_statidx = RPCBPROC_UNSET, | |
979 | .p_timer = 0, | |
980 | .p_name = "UNSET", | |
981 | }, | |
982 | [RPCBPROC_GETPORT] = { | |
983 | .p_proc = RPCBPROC_GETPORT, | |
9f06c719 | 984 | .p_encode = (kxdreproc_t)rpcb_enc_mapping, |
bf269551 | 985 | .p_decode = (kxdrdproc_t)rpcb_dec_getport, |
f8b761ef CL |
986 | .p_arglen = RPCB_mappingargs_sz, |
987 | .p_replen = RPCB_getportres_sz, | |
988 | .p_statidx = RPCBPROC_GETPORT, | |
989 | .p_timer = 0, | |
990 | .p_name = "GETPORT", | |
991 | }, | |
a509050b CL |
992 | }; |
993 | ||
994 | static struct rpc_procinfo rpcb_procedures3[] = { | |
f8b761ef CL |
995 | [RPCBPROC_SET] = { |
996 | .p_proc = RPCBPROC_SET, | |
9f06c719 | 997 | .p_encode = (kxdreproc_t)rpcb_enc_getaddr, |
bf269551 | 998 | .p_decode = (kxdrdproc_t)rpcb_dec_set, |
f8b761ef CL |
999 | .p_arglen = RPCB_getaddrargs_sz, |
1000 | .p_replen = RPCB_setres_sz, | |
1001 | .p_statidx = RPCBPROC_SET, | |
1002 | .p_timer = 0, | |
1003 | .p_name = "SET", | |
1004 | }, | |
1005 | [RPCBPROC_UNSET] = { | |
1006 | .p_proc = RPCBPROC_UNSET, | |
9f06c719 | 1007 | .p_encode = (kxdreproc_t)rpcb_enc_getaddr, |
bf269551 | 1008 | .p_decode = (kxdrdproc_t)rpcb_dec_set, |
f8b761ef CL |
1009 | .p_arglen = RPCB_getaddrargs_sz, |
1010 | .p_replen = RPCB_setres_sz, | |
1011 | .p_statidx = RPCBPROC_UNSET, | |
1012 | .p_timer = 0, | |
1013 | .p_name = "UNSET", | |
1014 | }, | |
1015 | [RPCBPROC_GETADDR] = { | |
1016 | .p_proc = RPCBPROC_GETADDR, | |
9f06c719 | 1017 | .p_encode = (kxdreproc_t)rpcb_enc_getaddr, |
bf269551 | 1018 | .p_decode = (kxdrdproc_t)rpcb_dec_getaddr, |
f8b761ef CL |
1019 | .p_arglen = RPCB_getaddrargs_sz, |
1020 | .p_replen = RPCB_getaddrres_sz, | |
1021 | .p_statidx = RPCBPROC_GETADDR, | |
1022 | .p_timer = 0, | |
1023 | .p_name = "GETADDR", | |
1024 | }, | |
a509050b CL |
1025 | }; |
1026 | ||
1027 | static struct rpc_procinfo rpcb_procedures4[] = { | |
f8b761ef CL |
1028 | [RPCBPROC_SET] = { |
1029 | .p_proc = RPCBPROC_SET, | |
9f06c719 | 1030 | .p_encode = (kxdreproc_t)rpcb_enc_getaddr, |
bf269551 | 1031 | .p_decode = (kxdrdproc_t)rpcb_dec_set, |
f8b761ef CL |
1032 | .p_arglen = RPCB_getaddrargs_sz, |
1033 | .p_replen = RPCB_setres_sz, | |
1034 | .p_statidx = RPCBPROC_SET, | |
1035 | .p_timer = 0, | |
1036 | .p_name = "SET", | |
1037 | }, | |
1038 | [RPCBPROC_UNSET] = { | |
1039 | .p_proc = RPCBPROC_UNSET, | |
9f06c719 | 1040 | .p_encode = (kxdreproc_t)rpcb_enc_getaddr, |
bf269551 | 1041 | .p_decode = (kxdrdproc_t)rpcb_dec_set, |
f8b761ef CL |
1042 | .p_arglen = RPCB_getaddrargs_sz, |
1043 | .p_replen = RPCB_setres_sz, | |
1044 | .p_statidx = RPCBPROC_UNSET, | |
1045 | .p_timer = 0, | |
1046 | .p_name = "UNSET", | |
1047 | }, | |
1048 | [RPCBPROC_GETADDR] = { | |
1049 | .p_proc = RPCBPROC_GETADDR, | |
9f06c719 | 1050 | .p_encode = (kxdreproc_t)rpcb_enc_getaddr, |
bf269551 | 1051 | .p_decode = (kxdrdproc_t)rpcb_dec_getaddr, |
f8b761ef CL |
1052 | .p_arglen = RPCB_getaddrargs_sz, |
1053 | .p_replen = RPCB_getaddrres_sz, | |
1054 | .p_statidx = RPCBPROC_GETADDR, | |
1055 | .p_timer = 0, | |
1056 | .p_name = "GETADDR", | |
1057 | }, | |
a509050b CL |
1058 | }; |
1059 | ||
a613fa16 | 1060 | static const struct rpcb_info rpcb_next_version[] = { |
fc200e79 CL |
1061 | { |
1062 | .rpc_vers = RPCBVERS_2, | |
1063 | .rpc_proc = &rpcb_procedures2[RPCBPROC_GETPORT], | |
1064 | }, | |
1065 | { | |
1066 | .rpc_proc = NULL, | |
1067 | }, | |
a509050b CL |
1068 | }; |
1069 | ||
a613fa16 | 1070 | static const struct rpcb_info rpcb_next_version6[] = { |
fc200e79 CL |
1071 | { |
1072 | .rpc_vers = RPCBVERS_4, | |
8842413a | 1073 | .rpc_proc = &rpcb_procedures4[RPCBPROC_GETADDR], |
fc200e79 CL |
1074 | }, |
1075 | { | |
1076 | .rpc_vers = RPCBVERS_3, | |
1077 | .rpc_proc = &rpcb_procedures3[RPCBPROC_GETADDR], | |
1078 | }, | |
fc200e79 CL |
1079 | { |
1080 | .rpc_proc = NULL, | |
1081 | }, | |
d5b64430 CL |
1082 | }; |
1083 | ||
a613fa16 | 1084 | static const struct rpc_version rpcb_version2 = { |
fc200e79 | 1085 | .number = RPCBVERS_2, |
1ac7c23e | 1086 | .nrprocs = ARRAY_SIZE(rpcb_procedures2), |
a509050b CL |
1087 | .procs = rpcb_procedures2 |
1088 | }; | |
1089 | ||
a613fa16 | 1090 | static const struct rpc_version rpcb_version3 = { |
fc200e79 | 1091 | .number = RPCBVERS_3, |
1ac7c23e | 1092 | .nrprocs = ARRAY_SIZE(rpcb_procedures3), |
a509050b CL |
1093 | .procs = rpcb_procedures3 |
1094 | }; | |
1095 | ||
a613fa16 | 1096 | static const struct rpc_version rpcb_version4 = { |
fc200e79 | 1097 | .number = RPCBVERS_4, |
1ac7c23e | 1098 | .nrprocs = ARRAY_SIZE(rpcb_procedures4), |
a509050b CL |
1099 | .procs = rpcb_procedures4 |
1100 | }; | |
1101 | ||
a613fa16 | 1102 | static const struct rpc_version *rpcb_version[] = { |
a509050b CL |
1103 | NULL, |
1104 | NULL, | |
1105 | &rpcb_version2, | |
1106 | &rpcb_version3, | |
1107 | &rpcb_version4 | |
1108 | }; | |
1109 | ||
1110 | static struct rpc_stat rpcb_stats; | |
1111 | ||
a613fa16 | 1112 | static const struct rpc_program rpcb_program = { |
a509050b CL |
1113 | .name = "rpcbind", |
1114 | .number = RPCBIND_PROGRAM, | |
1115 | .nrvers = ARRAY_SIZE(rpcb_version), | |
1116 | .version = rpcb_version, | |
1117 | .stats = &rpcb_stats, | |
1118 | }; |