blob: 0adefc40cc8929677a6a2257b2090222d764d569 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
Chuck Lever19207232007-07-01 12:13:33 -04002 * In-kernel MOUNT protocol client
Linus Torvalds1da177e2005-04-16 15:20:36 -07003 *
4 * Copyright (C) 1997, Olaf Kirch <okir@monad.swb.de>
5 */
6
7#include <linux/types.h>
8#include <linux/socket.h>
9#include <linux/kernel.h>
10#include <linux/errno.h>
11#include <linux/uio.h>
12#include <linux/net.h>
13#include <linux/in.h>
14#include <linux/sunrpc/clnt.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070015#include <linux/sunrpc/sched.h>
16#include <linux/nfs_fs.h>
Steve Dickson84919452008-04-11 20:03:06 -040017#include "internal.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070018
19#ifdef RPC_DEBUG
Chuck Lever3ea97302007-07-01 12:13:27 -040020# define NFSDBG_FACILITY NFSDBG_MOUNT
Linus Torvalds1da177e2005-04-16 15:20:36 -070021#endif
22
Chuck Lever2ad78092009-06-17 18:02:11 -070023/*
Chuck Lever29a1bd62009-06-17 18:02:11 -070024 * Defined by RFC 1094, section A.3; and RFC 1813, section 5.1.4
25 */
26#define MNTPATHLEN (1024)
27
28/*
29 * XDR data type sizes
30 */
31#define encode_dirpath_sz (1 + XDR_QUADLEN(MNTPATHLEN))
Chuck Leverfb125292009-06-17 18:02:12 -070032#define MNT_status_sz (1)
33#define MNT_fhs_status_sz (1)
Chuck Lever4fdcd992009-06-17 18:02:12 -070034#define MNT_fhandle_sz XDR_QUADLEN(NFS2_FHSIZE)
35#define MNT_fhandle3_sz (1 + XDR_QUADLEN(NFS3_FHSIZE))
Chuck Levera14017d2009-06-17 18:02:12 -070036#define MNT_authflav3_sz (1 + NFS_MAX_SECFLAVORS)
Chuck Lever29a1bd62009-06-17 18:02:11 -070037
38/*
39 * XDR argument and result sizes
40 */
41#define MNT_enc_dirpath_sz encode_dirpath_sz
Chuck Lever8e02f6b2009-06-17 18:02:13 -070042#define MNT_dec_mountres_sz (MNT_status_sz + MNT_fhandle_sz)
43#define MNT_dec_mountres3_sz (MNT_status_sz + MNT_fhandle_sz + \
44 MNT_authflav3_sz)
Chuck Lever29a1bd62009-06-17 18:02:11 -070045
46/*
Chuck Lever2ad78092009-06-17 18:02:11 -070047 * Defined by RFC 1094, section A.5
48 */
49enum {
50 MOUNTPROC_NULL = 0,
51 MOUNTPROC_MNT = 1,
52 MOUNTPROC_DUMP = 2,
53 MOUNTPROC_UMNT = 3,
54 MOUNTPROC_UMNTALL = 4,
55 MOUNTPROC_EXPORT = 5,
56};
57
58/*
59 * Defined by RFC 1813, section 5.2
60 */
61enum {
62 MOUNTPROC3_NULL = 0,
63 MOUNTPROC3_MNT = 1,
64 MOUNTPROC3_DUMP = 2,
65 MOUNTPROC3_UMNT = 3,
66 MOUNTPROC3_UMNTALL = 4,
67 MOUNTPROC3_EXPORT = 5,
68};
69
Linus Torvalds1da177e2005-04-16 15:20:36 -070070static struct rpc_program mnt_program;
71
Chuck Leverfb125292009-06-17 18:02:12 -070072/*
73 * Defined by OpenGroup XNFS Version 3W, chapter 8
74 */
75enum mountstat {
76 MNT_OK = 0,
77 MNT_EPERM = 1,
78 MNT_ENOENT = 2,
79 MNT_EACCES = 13,
80 MNT_EINVAL = 22,
81};
82
83static struct {
84 u32 status;
85 int errno;
86} mnt_errtbl[] = {
87 { .status = MNT_OK, .errno = 0, },
88 { .status = MNT_EPERM, .errno = -EPERM, },
89 { .status = MNT_ENOENT, .errno = -ENOENT, },
90 { .status = MNT_EACCES, .errno = -EACCES, },
91 { .status = MNT_EINVAL, .errno = -EINVAL, },
92};
93
94/*
95 * Defined by RFC 1813, section 5.1.5
96 */
97enum mountstat3 {
98 MNT3_OK = 0, /* no error */
99 MNT3ERR_PERM = 1, /* Not owner */
100 MNT3ERR_NOENT = 2, /* No such file or directory */
101 MNT3ERR_IO = 5, /* I/O error */
102 MNT3ERR_ACCES = 13, /* Permission denied */
103 MNT3ERR_NOTDIR = 20, /* Not a directory */
104 MNT3ERR_INVAL = 22, /* Invalid argument */
105 MNT3ERR_NAMETOOLONG = 63, /* Filename too long */
106 MNT3ERR_NOTSUPP = 10004, /* Operation not supported */
107 MNT3ERR_SERVERFAULT = 10006, /* A failure on the server */
108};
109
110static struct {
111 u32 status;
112 int errno;
113} mnt3_errtbl[] = {
114 { .status = MNT3_OK, .errno = 0, },
115 { .status = MNT3ERR_PERM, .errno = -EPERM, },
116 { .status = MNT3ERR_NOENT, .errno = -ENOENT, },
117 { .status = MNT3ERR_IO, .errno = -EIO, },
118 { .status = MNT3ERR_ACCES, .errno = -EACCES, },
119 { .status = MNT3ERR_NOTDIR, .errno = -ENOTDIR, },
120 { .status = MNT3ERR_INVAL, .errno = -EINVAL, },
121 { .status = MNT3ERR_NAMETOOLONG, .errno = -ENAMETOOLONG, },
122 { .status = MNT3ERR_NOTSUPP, .errno = -ENOTSUPP, },
123 { .status = MNT3ERR_SERVERFAULT, .errno = -ESERVERFAULT, },
124};
125
126struct mountres {
127 int errno;
128 struct nfs_fh *fh;
Chuck Levera14017d2009-06-17 18:02:12 -0700129 unsigned int *auth_count;
130 rpc_authflavor_t *auth_flavors;
Chuck Leverfb125292009-06-17 18:02:12 -0700131};
132
Linus Torvalds1da177e2005-04-16 15:20:36 -0700133struct mnt_fhstatus {
Chuck Lever19207232007-07-01 12:13:33 -0400134 u32 status;
135 struct nfs_fh *fh;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700136};
137
Chuck Lever3ea97302007-07-01 12:13:27 -0400138/**
139 * nfs_mount - Obtain an NFS file handle for the given host and path
Chuck Leverc5d120f2008-12-23 15:21:35 -0500140 * @info: pointer to mount request arguments
Chuck Lever3ea97302007-07-01 12:13:27 -0400141 *
142 * Uses default timeout parameters specified by underlying transport.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700143 */
Chuck Leverc5d120f2008-12-23 15:21:35 -0500144int nfs_mount(struct nfs_mount_request *info)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700145{
Chuck Lever8e02f6b2009-06-17 18:02:13 -0700146 struct mountres result = {
147 .fh = info->fh,
148 .auth_count = info->auth_flav_len,
149 .auth_flavors = info->auth_flavs,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700150 };
Chuck Leverdead28d2006-03-20 13:44:23 -0500151 struct rpc_message msg = {
Chuck Leverc5d120f2008-12-23 15:21:35 -0500152 .rpc_argp = info->dirpath,
Chuck Leverdead28d2006-03-20 13:44:23 -0500153 .rpc_resp = &result,
154 };
Chuck Lever3ea97302007-07-01 12:13:27 -0400155 struct rpc_create_args args = {
Chuck Leverc5d120f2008-12-23 15:21:35 -0500156 .protocol = info->protocol,
157 .address = info->sap,
158 .addrsize = info->salen,
159 .servername = info->hostname,
Chuck Lever3ea97302007-07-01 12:13:27 -0400160 .program = &mnt_program,
Chuck Leverc5d120f2008-12-23 15:21:35 -0500161 .version = info->version,
Chuck Lever3ea97302007-07-01 12:13:27 -0400162 .authflavor = RPC_AUTH_UNIX,
Chuck Lever3ea97302007-07-01 12:13:27 -0400163 };
164 struct rpc_clnt *mnt_clnt;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700165 int status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700166
Chuck Lever3ea97302007-07-01 12:13:27 -0400167 dprintk("NFS: sending MNT request for %s:%s\n",
Chuck Leverc5d120f2008-12-23 15:21:35 -0500168 (info->hostname ? info->hostname : "server"),
169 info->dirpath);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700170
Chuck Lever50a737f2008-12-23 15:21:37 -0500171 if (info->noresvport)
172 args.flags |= RPC_CLNT_CREATE_NONPRIVPORT;
173
Chuck Lever3ea97302007-07-01 12:13:27 -0400174 mnt_clnt = rpc_create(&args);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700175 if (IS_ERR(mnt_clnt))
Chuck Lever013a8c12007-07-01 12:13:38 -0400176 goto out_clnt_err;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700177
Chuck Leverc5d120f2008-12-23 15:21:35 -0500178 if (info->version == NFS_MNT3_VERSION)
Chuck Leverdead28d2006-03-20 13:44:23 -0500179 msg.rpc_proc = &mnt_clnt->cl_procinfo[MOUNTPROC3_MNT];
180 else
Chuck Lever2ad78092009-06-17 18:02:11 -0700181 msg.rpc_proc = &mnt_clnt->cl_procinfo[MOUNTPROC_MNT];
Chuck Leverdead28d2006-03-20 13:44:23 -0500182
183 status = rpc_call_sync(mnt_clnt, &msg, 0);
Trond Myklebust90c57552007-06-09 19:49:36 -0400184 rpc_shutdown_client(mnt_clnt);
Chuck Lever013a8c12007-07-01 12:13:38 -0400185
186 if (status < 0)
187 goto out_call_err;
Chuck Lever8e02f6b2009-06-17 18:02:13 -0700188 if (result.errno != 0)
Chuck Lever013a8c12007-07-01 12:13:38 -0400189 goto out_mnt_err;
190
191 dprintk("NFS: MNT request succeeded\n");
192 status = 0;
193
194out:
195 return status;
196
197out_clnt_err:
198 status = PTR_ERR(mnt_clnt);
Chuck Lever8e02f6b2009-06-17 18:02:13 -0700199 dprintk("NFS: failed to create MNT RPC client, status=%d\n", status);
Chuck Lever013a8c12007-07-01 12:13:38 -0400200 goto out;
201
202out_call_err:
Chuck Lever8e02f6b2009-06-17 18:02:13 -0700203 dprintk("NFS: MNT request failed, status=%d\n", status);
Chuck Lever013a8c12007-07-01 12:13:38 -0400204 goto out;
205
206out_mnt_err:
Chuck Lever8e02f6b2009-06-17 18:02:13 -0700207 dprintk("NFS: MNT server returned result %d\n", result.errno);
208 status = result.errno;
Chuck Lever013a8c12007-07-01 12:13:38 -0400209 goto out;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700210}
211
Chuck Lever0b524122009-08-09 15:09:30 -0400212/**
213 * nfs_umount - Notify a server that we have unmounted this export
214 * @info: pointer to umount request arguments
215 *
216 * MOUNTPROC_UMNT is advisory, so we set a short timeout, and always
217 * use UDP.
218 */
219void nfs_umount(const struct nfs_mount_request *info)
220{
221 static const struct rpc_timeout nfs_umnt_timeout = {
222 .to_initval = 1 * HZ,
223 .to_maxval = 3 * HZ,
224 .to_retries = 2,
225 };
226 struct rpc_create_args args = {
227 .protocol = IPPROTO_UDP,
228 .address = info->sap,
229 .addrsize = info->salen,
230 .timeout = &nfs_umnt_timeout,
231 .servername = info->hostname,
232 .program = &mnt_program,
233 .version = info->version,
234 .authflavor = RPC_AUTH_UNIX,
235 .flags = RPC_CLNT_CREATE_NOPING,
236 };
237 struct mountres result;
238 struct rpc_message msg = {
239 .rpc_argp = info->dirpath,
240 .rpc_resp = &result,
241 };
242 struct rpc_clnt *clnt;
243 int status;
244
245 if (info->noresvport)
246 args.flags |= RPC_CLNT_CREATE_NONPRIVPORT;
247
248 clnt = rpc_create(&args);
249 if (unlikely(IS_ERR(clnt)))
250 goto out_clnt_err;
251
252 dprintk("NFS: sending UMNT request for %s:%s\n",
253 (info->hostname ? info->hostname : "server"), info->dirpath);
254
255 if (info->version == NFS_MNT3_VERSION)
256 msg.rpc_proc = &clnt->cl_procinfo[MOUNTPROC3_UMNT];
257 else
258 msg.rpc_proc = &clnt->cl_procinfo[MOUNTPROC_UMNT];
259
260 status = rpc_call_sync(clnt, &msg, 0);
261 rpc_shutdown_client(clnt);
262
263 if (unlikely(status < 0))
264 goto out_call_err;
265
266 return;
267
268out_clnt_err:
269 dprintk("NFS: failed to create UMNT RPC client, status=%ld\n",
270 PTR_ERR(clnt));
271 return;
272
273out_call_err:
274 dprintk("NFS: UMNT request failed, status=%d\n", status);
275}
276
Linus Torvalds1da177e2005-04-16 15:20:36 -0700277/*
278 * XDR encode/decode functions for MOUNT
279 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700280
Chuck Lever29a1bd62009-06-17 18:02:11 -0700281static int encode_mntdirpath(struct xdr_stream *xdr, const char *pathname)
282{
283 const u32 pathname_len = strlen(pathname);
284 __be32 *p;
285
286 if (unlikely(pathname_len > MNTPATHLEN))
287 return -EIO;
288
289 p = xdr_reserve_space(xdr, sizeof(u32) + pathname_len);
290 if (unlikely(p == NULL))
291 return -EIO;
292 xdr_encode_opaque(p, pathname, pathname_len);
293
294 return 0;
295}
296
297static int mnt_enc_dirpath(struct rpc_rqst *req, __be32 *p,
298 const char *dirpath)
299{
300 struct xdr_stream xdr;
301
302 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
303 return encode_mntdirpath(&xdr, dirpath);
304}
305
Chuck Leverfb125292009-06-17 18:02:12 -0700306/*
307 * RFC 1094: "A non-zero status indicates some sort of error. In this
308 * case, the status is a UNIX error number." This can be problematic
309 * if the server and client use different errno values for the same
310 * error.
311 *
312 * However, the OpenGroup XNFS spec provides a simple mapping that is
313 * independent of local errno values on the server and the client.
314 */
315static int decode_status(struct xdr_stream *xdr, struct mountres *res)
316{
317 unsigned int i;
318 u32 status;
319 __be32 *p;
320
321 p = xdr_inline_decode(xdr, sizeof(status));
322 if (unlikely(p == NULL))
323 return -EIO;
324 status = ntohl(*p);
325
Roel Kluindd8ac1d2009-08-09 15:06:19 -0400326 for (i = 0; i < ARRAY_SIZE(mnt_errtbl); i++) {
Chuck Leverfb125292009-06-17 18:02:12 -0700327 if (mnt_errtbl[i].status == status) {
328 res->errno = mnt_errtbl[i].errno;
329 return 0;
330 }
331 }
332
333 dprintk("NFS: unrecognized MNT status code: %u\n", status);
334 res->errno = -EACCES;
335 return 0;
336}
337
Chuck Lever4fdcd992009-06-17 18:02:12 -0700338static int decode_fhandle(struct xdr_stream *xdr, struct mountres *res)
339{
340 struct nfs_fh *fh = res->fh;
341 __be32 *p;
342
343 p = xdr_inline_decode(xdr, NFS2_FHSIZE);
344 if (unlikely(p == NULL))
345 return -EIO;
346
347 fh->size = NFS2_FHSIZE;
348 memcpy(fh->data, p, NFS2_FHSIZE);
349 return 0;
350}
351
Chuck Lever8e02f6b2009-06-17 18:02:13 -0700352static int mnt_dec_mountres(struct rpc_rqst *req, __be32 *p,
353 struct mountres *res)
354{
355 struct xdr_stream xdr;
356 int status;
357
358 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
359
360 status = decode_status(&xdr, res);
361 if (unlikely(status != 0 || res->errno != 0))
362 return status;
363 return decode_fhandle(&xdr, res);
364}
365
Chuck Leverfb125292009-06-17 18:02:12 -0700366static int decode_fhs_status(struct xdr_stream *xdr, struct mountres *res)
367{
368 unsigned int i;
369 u32 status;
370 __be32 *p;
371
372 p = xdr_inline_decode(xdr, sizeof(status));
373 if (unlikely(p == NULL))
374 return -EIO;
375 status = ntohl(*p);
376
Roel Kluindd8ac1d2009-08-09 15:06:19 -0400377 for (i = 0; i < ARRAY_SIZE(mnt3_errtbl); i++) {
Chuck Leverfb125292009-06-17 18:02:12 -0700378 if (mnt3_errtbl[i].status == status) {
379 res->errno = mnt3_errtbl[i].errno;
380 return 0;
381 }
382 }
383
384 dprintk("NFS: unrecognized MNT3 status code: %u\n", status);
385 res->errno = -EACCES;
386 return 0;
387}
388
Chuck Lever4fdcd992009-06-17 18:02:12 -0700389static int decode_fhandle3(struct xdr_stream *xdr, struct mountres *res)
390{
391 struct nfs_fh *fh = res->fh;
392 u32 size;
393 __be32 *p;
394
395 p = xdr_inline_decode(xdr, sizeof(size));
396 if (unlikely(p == NULL))
397 return -EIO;
398
399 size = ntohl(*p++);
400 if (size > NFS3_FHSIZE || size == 0)
401 return -EIO;
402
403 p = xdr_inline_decode(xdr, size);
404 if (unlikely(p == NULL))
405 return -EIO;
406
407 fh->size = size;
408 memcpy(fh->data, p, size);
409 return 0;
410}
411
Chuck Levera14017d2009-06-17 18:02:12 -0700412static int decode_auth_flavors(struct xdr_stream *xdr, struct mountres *res)
413{
414 rpc_authflavor_t *flavors = res->auth_flavors;
415 unsigned int *count = res->auth_count;
416 u32 entries, i;
417 __be32 *p;
418
419 if (*count == 0)
420 return 0;
421
422 p = xdr_inline_decode(xdr, sizeof(entries));
423 if (unlikely(p == NULL))
424 return -EIO;
425 entries = ntohl(*p);
426 dprintk("NFS: received %u auth flavors\n", entries);
427 if (entries > NFS_MAX_SECFLAVORS)
428 entries = NFS_MAX_SECFLAVORS;
429
430 p = xdr_inline_decode(xdr, sizeof(u32) * entries);
431 if (unlikely(p == NULL))
432 return -EIO;
433
434 if (entries > *count)
435 entries = *count;
436
437 for (i = 0; i < entries; i++) {
438 flavors[i] = ntohl(*p++);
439 dprintk("NFS:\tflavor %u: %d\n", i, flavors[i]);
440 }
441 *count = i;
442
443 return 0;
444}
445
Chuck Lever8e02f6b2009-06-17 18:02:13 -0700446static int mnt_dec_mountres3(struct rpc_rqst *req, __be32 *p,
447 struct mountres *res)
448{
449 struct xdr_stream xdr;
450 int status;
451
452 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
453
454 status = decode_fhs_status(&xdr, res);
455 if (unlikely(status != 0 || res->errno != 0))
456 return status;
457 status = decode_fhandle3(&xdr, res);
458 if (unlikely(status != 0)) {
459 res->errno = -EBADHANDLE;
460 return 0;
461 }
462 return decode_auth_flavors(&xdr, res);
463}
464
Chuck Lever19207232007-07-01 12:13:33 -0400465static struct rpc_procinfo mnt_procedures[] = {
Chuck Lever2ad78092009-06-17 18:02:11 -0700466 [MOUNTPROC_MNT] = {
467 .p_proc = MOUNTPROC_MNT,
Chuck Lever29a1bd62009-06-17 18:02:11 -0700468 .p_encode = (kxdrproc_t)mnt_enc_dirpath,
Chuck Lever8e02f6b2009-06-17 18:02:13 -0700469 .p_decode = (kxdrproc_t)mnt_dec_mountres,
Chuck Lever29a1bd62009-06-17 18:02:11 -0700470 .p_arglen = MNT_enc_dirpath_sz,
Chuck Lever8e02f6b2009-06-17 18:02:13 -0700471 .p_replen = MNT_dec_mountres_sz,
Chuck Lever2ad78092009-06-17 18:02:11 -0700472 .p_statidx = MOUNTPROC_MNT,
Chuck Lever19207232007-07-01 12:13:33 -0400473 .p_name = "MOUNT",
Linus Torvalds1da177e2005-04-16 15:20:36 -0700474 },
Chuck Lever0b524122009-08-09 15:09:30 -0400475 [MOUNTPROC_UMNT] = {
476 .p_proc = MOUNTPROC_UMNT,
477 .p_encode = (kxdrproc_t)mnt_enc_dirpath,
478 .p_arglen = MNT_enc_dirpath_sz,
479 .p_statidx = MOUNTPROC_UMNT,
480 .p_name = "UMOUNT",
481 },
Linus Torvalds1da177e2005-04-16 15:20:36 -0700482};
483
484static struct rpc_procinfo mnt3_procedures[] = {
Chuck Lever19207232007-07-01 12:13:33 -0400485 [MOUNTPROC3_MNT] = {
486 .p_proc = MOUNTPROC3_MNT,
Chuck Lever29a1bd62009-06-17 18:02:11 -0700487 .p_encode = (kxdrproc_t)mnt_enc_dirpath,
Chuck Lever8e02f6b2009-06-17 18:02:13 -0700488 .p_decode = (kxdrproc_t)mnt_dec_mountres3,
Chuck Lever29a1bd62009-06-17 18:02:11 -0700489 .p_arglen = MNT_enc_dirpath_sz,
Chuck Lever8e02f6b2009-06-17 18:02:13 -0700490 .p_replen = MNT_dec_mountres3_sz,
Chuck Lever19207232007-07-01 12:13:33 -0400491 .p_statidx = MOUNTPROC3_MNT,
492 .p_name = "MOUNT",
Linus Torvalds1da177e2005-04-16 15:20:36 -0700493 },
Chuck Lever0b524122009-08-09 15:09:30 -0400494 [MOUNTPROC3_UMNT] = {
495 .p_proc = MOUNTPROC3_UMNT,
496 .p_encode = (kxdrproc_t)mnt_enc_dirpath,
497 .p_arglen = MNT_enc_dirpath_sz,
498 .p_statidx = MOUNTPROC3_UMNT,
499 .p_name = "UMOUNT",
500 },
Linus Torvalds1da177e2005-04-16 15:20:36 -0700501};
502
503
Chuck Lever19207232007-07-01 12:13:33 -0400504static struct rpc_version mnt_version1 = {
505 .number = 1,
506 .nrprocs = 2,
507 .procs = mnt_procedures,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700508};
509
Chuck Lever19207232007-07-01 12:13:33 -0400510static struct rpc_version mnt_version3 = {
511 .number = 3,
512 .nrprocs = 2,
513 .procs = mnt3_procedures,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700514};
515
Chuck Lever19207232007-07-01 12:13:33 -0400516static struct rpc_version *mnt_version[] = {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700517 NULL,
518 &mnt_version1,
519 NULL,
520 &mnt_version3,
521};
522
Chuck Lever19207232007-07-01 12:13:33 -0400523static struct rpc_stat mnt_stats;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700524
Chuck Lever19207232007-07-01 12:13:33 -0400525static struct rpc_program mnt_program = {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700526 .name = "mount",
527 .number = NFS_MNT_PROGRAM,
Tobias Klausere8c96f82006-03-24 03:15:34 -0800528 .nrvers = ARRAY_SIZE(mnt_version),
Linus Torvalds1da177e2005-04-16 15:20:36 -0700529 .version = mnt_version,
530 .stats = &mnt_stats,
531};