1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * XDR support for nfsd
4 *
5 * Copyright (C) 1995, 1996 Olaf Kirch <okir@monad.swb.de>
6 */
7
8 #include "vfs.h"
9 #include "xdr.h"
10 #include "auth.h"
11
12 #define NFSDDBG_FACILITY NFSDDBG_XDR
13
14 /*
15 * Mapping of S_IF* types to NFS file types
16 */
17 static u32 nfs_ftypes[] = {
18 NFNON, NFCHR, NFCHR, NFBAD,
19 NFDIR, NFBAD, NFBLK, NFBAD,
20 NFREG, NFBAD, NFLNK, NFBAD,
21 NFSOCK, NFBAD, NFLNK, NFBAD,
22 };
23
24
25 /*
26 * XDR functions for basic NFS types
27 */
28 static __be32 *
decode_fh(__be32 * p,struct svc_fh * fhp)29 decode_fh(__be32 *p, struct svc_fh *fhp)
30 {
31 fh_init(fhp, NFS_FHSIZE);
32 memcpy(&fhp->fh_handle.fh_base, p, NFS_FHSIZE);
33 fhp->fh_handle.fh_size = NFS_FHSIZE;
34
35 /* FIXME: Look up export pointer here and verify
36 * Sun Secure RPC if requested */
37 return p + (NFS_FHSIZE >> 2);
38 }
39
40 /* Helper function for NFSv2 ACL code */
nfs2svc_decode_fh(__be32 * p,struct svc_fh * fhp)41 __be32 *nfs2svc_decode_fh(__be32 *p, struct svc_fh *fhp)
42 {
43 return decode_fh(p, fhp);
44 }
45
46 static __be32 *
encode_fh(__be32 * p,struct svc_fh * fhp)47 encode_fh(__be32 *p, struct svc_fh *fhp)
48 {
49 memcpy(p, &fhp->fh_handle.fh_base, NFS_FHSIZE);
50 return p + (NFS_FHSIZE>> 2);
51 }
52
53 /*
54 * Decode a file name and make sure that the path contains
55 * no slashes or null bytes.
56 */
57 static __be32 *
decode_filename(__be32 * p,char ** namp,unsigned int * lenp)58 decode_filename(__be32 *p, char **namp, unsigned int *lenp)
59 {
60 char *name;
61 unsigned int i;
62
63 if ((p = xdr_decode_string_inplace(p, namp, lenp, NFS_MAXNAMLEN)) != NULL) {
64 for (i = 0, name = *namp; i < *lenp; i++, name++) {
65 if (*name == '\0' || *name == '/')
66 return NULL;
67 }
68 }
69
70 return p;
71 }
72
73 static __be32 *
decode_sattr(__be32 * p,struct iattr * iap,struct user_namespace * userns)74 decode_sattr(__be32 *p, struct iattr *iap, struct user_namespace *userns)
75 {
76 u32 tmp, tmp1;
77
78 iap->ia_valid = 0;
79
80 /* Sun client bug compatibility check: some sun clients seem to
81 * put 0xffff in the mode field when they mean 0xffffffff.
82 * Quoting the 4.4BSD nfs server code: Nah nah nah nah na nah.
83 */
84 if ((tmp = ntohl(*p++)) != (u32)-1 && tmp != 0xffff) {
85 iap->ia_valid |= ATTR_MODE;
86 iap->ia_mode = tmp;
87 }
88 if ((tmp = ntohl(*p++)) != (u32)-1) {
89 iap->ia_uid = make_kuid(userns, tmp);
90 if (uid_valid(iap->ia_uid))
91 iap->ia_valid |= ATTR_UID;
92 }
93 if ((tmp = ntohl(*p++)) != (u32)-1) {
94 iap->ia_gid = make_kgid(userns, tmp);
95 if (gid_valid(iap->ia_gid))
96 iap->ia_valid |= ATTR_GID;
97 }
98 if ((tmp = ntohl(*p++)) != (u32)-1) {
99 iap->ia_valid |= ATTR_SIZE;
100 iap->ia_size = tmp;
101 }
102 tmp = ntohl(*p++); tmp1 = ntohl(*p++);
103 if (tmp != (u32)-1 && tmp1 != (u32)-1) {
104 iap->ia_valid |= ATTR_ATIME | ATTR_ATIME_SET;
105 iap->ia_atime.tv_sec = tmp;
106 iap->ia_atime.tv_nsec = tmp1 * 1000;
107 }
108 tmp = ntohl(*p++); tmp1 = ntohl(*p++);
109 if (tmp != (u32)-1 && tmp1 != (u32)-1) {
110 iap->ia_valid |= ATTR_MTIME | ATTR_MTIME_SET;
111 iap->ia_mtime.tv_sec = tmp;
112 iap->ia_mtime.tv_nsec = tmp1 * 1000;
113 /*
114 * Passing the invalid value useconds=1000000 for mtime
115 * is a Sun convention for "set both mtime and atime to
116 * current server time". It's needed to make permissions
117 * checks for the "touch" program across v2 mounts to
118 * Solaris and Irix boxes work correctly. See description of
119 * sattr in section 6.1 of "NFS Illustrated" by
120 * Brent Callaghan, Addison-Wesley, ISBN 0-201-32750-5
121 */
122 if (tmp1 == 1000000)
123 iap->ia_valid &= ~(ATTR_ATIME_SET|ATTR_MTIME_SET);
124 }
125 return p;
126 }
127
128 static __be32 *
encode_fattr(struct svc_rqst * rqstp,__be32 * p,struct svc_fh * fhp,struct kstat * stat)129 encode_fattr(struct svc_rqst *rqstp, __be32 *p, struct svc_fh *fhp,
130 struct kstat *stat)
131 {
132 struct user_namespace *userns = nfsd_user_namespace(rqstp);
133 struct dentry *dentry = fhp->fh_dentry;
134 int type;
135 struct timespec64 time;
136 u32 f;
137
138 type = (stat->mode & S_IFMT);
139
140 *p++ = htonl(nfs_ftypes[type >> 12]);
141 *p++ = htonl((u32) stat->mode);
142 *p++ = htonl((u32) stat->nlink);
143 *p++ = htonl((u32) from_kuid_munged(userns, stat->uid));
144 *p++ = htonl((u32) from_kgid_munged(userns, stat->gid));
145
146 if (S_ISLNK(type) && stat->size > NFS_MAXPATHLEN) {
147 *p++ = htonl(NFS_MAXPATHLEN);
148 } else {
149 *p++ = htonl((u32) stat->size);
150 }
151 *p++ = htonl((u32) stat->blksize);
152 if (S_ISCHR(type) || S_ISBLK(type))
153 *p++ = htonl(new_encode_dev(stat->rdev));
154 else
155 *p++ = htonl(0xffffffff);
156 *p++ = htonl((u32) stat->blocks);
157 switch (fsid_source(fhp)) {
158 default:
159 case FSIDSOURCE_DEV:
160 *p++ = htonl(new_encode_dev(stat->dev));
161 break;
162 case FSIDSOURCE_FSID:
163 *p++ = htonl((u32) fhp->fh_export->ex_fsid);
164 break;
165 case FSIDSOURCE_UUID:
166 f = ((u32*)fhp->fh_export->ex_uuid)[0];
167 f ^= ((u32*)fhp->fh_export->ex_uuid)[1];
168 f ^= ((u32*)fhp->fh_export->ex_uuid)[2];
169 f ^= ((u32*)fhp->fh_export->ex_uuid)[3];
170 *p++ = htonl(f);
171 break;
172 }
173 *p++ = htonl((u32) stat->ino);
174 *p++ = htonl((u32) stat->atime.tv_sec);
175 *p++ = htonl(stat->atime.tv_nsec ? stat->atime.tv_nsec / 1000 : 0);
176 time = stat->mtime;
177 lease_get_mtime(d_inode(dentry), &time);
178 *p++ = htonl((u32) time.tv_sec);
179 *p++ = htonl(time.tv_nsec ? time.tv_nsec / 1000 : 0);
180 *p++ = htonl((u32) stat->ctime.tv_sec);
181 *p++ = htonl(stat->ctime.tv_nsec ? stat->ctime.tv_nsec / 1000 : 0);
182
183 return p;
184 }
185
186 /* Helper function for NFSv2 ACL code */
nfs2svc_encode_fattr(struct svc_rqst * rqstp,__be32 * p,struct svc_fh * fhp,struct kstat * stat)187 __be32 *nfs2svc_encode_fattr(struct svc_rqst *rqstp, __be32 *p, struct svc_fh *fhp, struct kstat *stat)
188 {
189 return encode_fattr(rqstp, p, fhp, stat);
190 }
191
192 /*
193 * XDR decode functions
194 */
195 int
nfssvc_decode_void(struct svc_rqst * rqstp,__be32 * p)196 nfssvc_decode_void(struct svc_rqst *rqstp, __be32 *p)
197 {
198 return xdr_argsize_check(rqstp, p);
199 }
200
201 int
nfssvc_decode_fhandle(struct svc_rqst * rqstp,__be32 * p)202 nfssvc_decode_fhandle(struct svc_rqst *rqstp, __be32 *p)
203 {
204 struct nfsd_fhandle *args = rqstp->rq_argp;
205
206 p = decode_fh(p, &args->fh);
207 if (!p)
208 return 0;
209 return xdr_argsize_check(rqstp, p);
210 }
211
212 int
nfssvc_decode_sattrargs(struct svc_rqst * rqstp,__be32 * p)213 nfssvc_decode_sattrargs(struct svc_rqst *rqstp, __be32 *p)
214 {
215 struct nfsd_sattrargs *args = rqstp->rq_argp;
216
217 p = decode_fh(p, &args->fh);
218 if (!p)
219 return 0;
220 p = decode_sattr(p, &args->attrs, nfsd_user_namespace(rqstp));
221
222 return xdr_argsize_check(rqstp, p);
223 }
224
225 int
nfssvc_decode_diropargs(struct svc_rqst * rqstp,__be32 * p)226 nfssvc_decode_diropargs(struct svc_rqst *rqstp, __be32 *p)
227 {
228 struct nfsd_diropargs *args = rqstp->rq_argp;
229
230 if (!(p = decode_fh(p, &args->fh))
231 || !(p = decode_filename(p, &args->name, &args->len)))
232 return 0;
233
234 return xdr_argsize_check(rqstp, p);
235 }
236
237 int
nfssvc_decode_readargs(struct svc_rqst * rqstp,__be32 * p)238 nfssvc_decode_readargs(struct svc_rqst *rqstp, __be32 *p)
239 {
240 struct nfsd_readargs *args = rqstp->rq_argp;
241 unsigned int len;
242 int v;
243 p = decode_fh(p, &args->fh);
244 if (!p)
245 return 0;
246
247 args->offset = ntohl(*p++);
248 len = args->count = ntohl(*p++);
249 p++; /* totalcount - unused */
250
251 len = min_t(unsigned int, len, NFSSVC_MAXBLKSIZE_V2);
252
253 /* set up somewhere to store response.
254 * We take pages, put them on reslist and include in iovec
255 */
256 v=0;
257 while (len > 0) {
258 struct page *p = *(rqstp->rq_next_page++);
259
260 rqstp->rq_vec[v].iov_base = page_address(p);
261 rqstp->rq_vec[v].iov_len = min_t(unsigned int, len, PAGE_SIZE);
262 len -= rqstp->rq_vec[v].iov_len;
263 v++;
264 }
265 args->vlen = v;
266 return xdr_argsize_check(rqstp, p);
267 }
268
269 int
nfssvc_decode_writeargs(struct svc_rqst * rqstp,__be32 * p)270 nfssvc_decode_writeargs(struct svc_rqst *rqstp, __be32 *p)
271 {
272 struct nfsd_writeargs *args = rqstp->rq_argp;
273 unsigned int len, hdr, dlen;
274 struct kvec *head = rqstp->rq_arg.head;
275
276 p = decode_fh(p, &args->fh);
277 if (!p)
278 return 0;
279
280 p++; /* beginoffset */
281 args->offset = ntohl(*p++); /* offset */
282 p++; /* totalcount */
283 len = args->len = ntohl(*p++);
284 /*
285 * The protocol specifies a maximum of 8192 bytes.
286 */
287 if (len > NFSSVC_MAXBLKSIZE_V2)
288 return 0;
289
290 /*
291 * Check to make sure that we got the right number of
292 * bytes.
293 */
294 hdr = (void*)p - head->iov_base;
295 if (hdr > head->iov_len)
296 return 0;
297 dlen = head->iov_len + rqstp->rq_arg.page_len - hdr;
298
299 /*
300 * Round the length of the data which was specified up to
301 * the next multiple of XDR units and then compare that
302 * against the length which was actually received.
303 * Note that when RPCSEC/GSS (for example) is used, the
304 * data buffer can be padded so dlen might be larger
305 * than required. It must never be smaller.
306 */
307 if (dlen < XDR_QUADLEN(len)*4)
308 return 0;
309
310 args->first.iov_base = (void *)p;
311 args->first.iov_len = head->iov_len - hdr;
312 return 1;
313 }
314
315 int
nfssvc_decode_createargs(struct svc_rqst * rqstp,__be32 * p)316 nfssvc_decode_createargs(struct svc_rqst *rqstp, __be32 *p)
317 {
318 struct nfsd_createargs *args = rqstp->rq_argp;
319
320 if ( !(p = decode_fh(p, &args->fh))
321 || !(p = decode_filename(p, &args->name, &args->len)))
322 return 0;
323 p = decode_sattr(p, &args->attrs, nfsd_user_namespace(rqstp));
324
325 return xdr_argsize_check(rqstp, p);
326 }
327
328 int
nfssvc_decode_renameargs(struct svc_rqst * rqstp,__be32 * p)329 nfssvc_decode_renameargs(struct svc_rqst *rqstp, __be32 *p)
330 {
331 struct nfsd_renameargs *args = rqstp->rq_argp;
332
333 if (!(p = decode_fh(p, &args->ffh))
334 || !(p = decode_filename(p, &args->fname, &args->flen))
335 || !(p = decode_fh(p, &args->tfh))
336 || !(p = decode_filename(p, &args->tname, &args->tlen)))
337 return 0;
338
339 return xdr_argsize_check(rqstp, p);
340 }
341
342 int
nfssvc_decode_readlinkargs(struct svc_rqst * rqstp,__be32 * p)343 nfssvc_decode_readlinkargs(struct svc_rqst *rqstp, __be32 *p)
344 {
345 struct nfsd_readlinkargs *args = rqstp->rq_argp;
346
347 p = decode_fh(p, &args->fh);
348 if (!p)
349 return 0;
350 args->buffer = page_address(*(rqstp->rq_next_page++));
351
352 return xdr_argsize_check(rqstp, p);
353 }
354
355 int
nfssvc_decode_linkargs(struct svc_rqst * rqstp,__be32 * p)356 nfssvc_decode_linkargs(struct svc_rqst *rqstp, __be32 *p)
357 {
358 struct nfsd_linkargs *args = rqstp->rq_argp;
359
360 if (!(p = decode_fh(p, &args->ffh))
361 || !(p = decode_fh(p, &args->tfh))
362 || !(p = decode_filename(p, &args->tname, &args->tlen)))
363 return 0;
364
365 return xdr_argsize_check(rqstp, p);
366 }
367
368 int
nfssvc_decode_symlinkargs(struct svc_rqst * rqstp,__be32 * p)369 nfssvc_decode_symlinkargs(struct svc_rqst *rqstp, __be32 *p)
370 {
371 struct nfsd_symlinkargs *args = rqstp->rq_argp;
372 char *base = (char *)p;
373 size_t xdrlen;
374
375 if ( !(p = decode_fh(p, &args->ffh))
376 || !(p = decode_filename(p, &args->fname, &args->flen)))
377 return 0;
378
379 args->tlen = ntohl(*p++);
380 if (args->tlen == 0)
381 return 0;
382
383 args->first.iov_base = p;
384 args->first.iov_len = rqstp->rq_arg.head[0].iov_len;
385 args->first.iov_len -= (char *)p - base;
386
387 /* This request is never larger than a page. Therefore,
388 * transport will deliver either:
389 * 1. pathname in the pagelist -> sattr is in the tail.
390 * 2. everything in the head buffer -> sattr is in the head.
391 */
392 if (rqstp->rq_arg.page_len) {
393 if (args->tlen != rqstp->rq_arg.page_len)
394 return 0;
395 p = rqstp->rq_arg.tail[0].iov_base;
396 } else {
397 xdrlen = XDR_QUADLEN(args->tlen);
398 if (xdrlen > args->first.iov_len - (8 * sizeof(__be32)))
399 return 0;
400 p += xdrlen;
401 }
402 decode_sattr(p, &args->attrs, nfsd_user_namespace(rqstp));
403
404 return 1;
405 }
406
407 int
nfssvc_decode_readdirargs(struct svc_rqst * rqstp,__be32 * p)408 nfssvc_decode_readdirargs(struct svc_rqst *rqstp, __be32 *p)
409 {
410 struct nfsd_readdirargs *args = rqstp->rq_argp;
411
412 p = decode_fh(p, &args->fh);
413 if (!p)
414 return 0;
415 args->cookie = ntohl(*p++);
416 args->count = ntohl(*p++);
417 args->count = min_t(u32, args->count, PAGE_SIZE);
418 args->buffer = page_address(*(rqstp->rq_next_page++));
419
420 return xdr_argsize_check(rqstp, p);
421 }
422
423 /*
424 * XDR encode functions
425 */
426 int
nfssvc_encode_void(struct svc_rqst * rqstp,__be32 * p)427 nfssvc_encode_void(struct svc_rqst *rqstp, __be32 *p)
428 {
429 return xdr_ressize_check(rqstp, p);
430 }
431
432 int
nfssvc_encode_stat(struct svc_rqst * rqstp,__be32 * p)433 nfssvc_encode_stat(struct svc_rqst *rqstp, __be32 *p)
434 {
435 struct nfsd_stat *resp = rqstp->rq_resp;
436
437 *p++ = resp->status;
438 return xdr_ressize_check(rqstp, p);
439 }
440
441 int
nfssvc_encode_attrstat(struct svc_rqst * rqstp,__be32 * p)442 nfssvc_encode_attrstat(struct svc_rqst *rqstp, __be32 *p)
443 {
444 struct nfsd_attrstat *resp = rqstp->rq_resp;
445
446 *p++ = resp->status;
447 if (resp->status != nfs_ok)
448 goto out;
449 p = encode_fattr(rqstp, p, &resp->fh, &resp->stat);
450 out:
451 return xdr_ressize_check(rqstp, p);
452 }
453
454 int
nfssvc_encode_diropres(struct svc_rqst * rqstp,__be32 * p)455 nfssvc_encode_diropres(struct svc_rqst *rqstp, __be32 *p)
456 {
457 struct nfsd_diropres *resp = rqstp->rq_resp;
458
459 *p++ = resp->status;
460 if (resp->status != nfs_ok)
461 goto out;
462 p = encode_fh(p, &resp->fh);
463 p = encode_fattr(rqstp, p, &resp->fh, &resp->stat);
464 out:
465 return xdr_ressize_check(rqstp, p);
466 }
467
468 int
nfssvc_encode_readlinkres(struct svc_rqst * rqstp,__be32 * p)469 nfssvc_encode_readlinkres(struct svc_rqst *rqstp, __be32 *p)
470 {
471 struct nfsd_readlinkres *resp = rqstp->rq_resp;
472
473 *p++ = resp->status;
474 if (resp->status != nfs_ok)
475 return xdr_ressize_check(rqstp, p);
476
477 *p++ = htonl(resp->len);
478 xdr_ressize_check(rqstp, p);
479 rqstp->rq_res.page_len = resp->len;
480 if (resp->len & 3) {
481 /* need to pad the tail */
482 rqstp->rq_res.tail[0].iov_base = p;
483 *p = 0;
484 rqstp->rq_res.tail[0].iov_len = 4 - (resp->len&3);
485 }
486 return 1;
487 }
488
489 int
nfssvc_encode_readres(struct svc_rqst * rqstp,__be32 * p)490 nfssvc_encode_readres(struct svc_rqst *rqstp, __be32 *p)
491 {
492 struct nfsd_readres *resp = rqstp->rq_resp;
493
494 *p++ = resp->status;
495 if (resp->status != nfs_ok)
496 return xdr_ressize_check(rqstp, p);
497
498 p = encode_fattr(rqstp, p, &resp->fh, &resp->stat);
499 *p++ = htonl(resp->count);
500 xdr_ressize_check(rqstp, p);
501
502 /* now update rqstp->rq_res to reflect data as well */
503 rqstp->rq_res.page_len = resp->count;
504 if (resp->count & 3) {
505 /* need to pad the tail */
506 rqstp->rq_res.tail[0].iov_base = p;
507 *p = 0;
508 rqstp->rq_res.tail[0].iov_len = 4 - (resp->count&3);
509 }
510 return 1;
511 }
512
513 int
nfssvc_encode_readdirres(struct svc_rqst * rqstp,__be32 * p)514 nfssvc_encode_readdirres(struct svc_rqst *rqstp, __be32 *p)
515 {
516 struct nfsd_readdirres *resp = rqstp->rq_resp;
517
518 *p++ = resp->status;
519 if (resp->status != nfs_ok)
520 return xdr_ressize_check(rqstp, p);
521
522 xdr_ressize_check(rqstp, p);
523 p = resp->buffer;
524 *p++ = 0; /* no more entries */
525 *p++ = htonl((resp->common.err == nfserr_eof));
526 rqstp->rq_res.page_len = (((unsigned long)p-1) & ~PAGE_MASK)+1;
527
528 return 1;
529 }
530
531 int
nfssvc_encode_statfsres(struct svc_rqst * rqstp,__be32 * p)532 nfssvc_encode_statfsres(struct svc_rqst *rqstp, __be32 *p)
533 {
534 struct nfsd_statfsres *resp = rqstp->rq_resp;
535 struct kstatfs *stat = &resp->stats;
536
537 *p++ = resp->status;
538 if (resp->status != nfs_ok)
539 return xdr_ressize_check(rqstp, p);
540
541 *p++ = htonl(NFSSVC_MAXBLKSIZE_V2); /* max transfer size */
542 *p++ = htonl(stat->f_bsize);
543 *p++ = htonl(stat->f_blocks);
544 *p++ = htonl(stat->f_bfree);
545 *p++ = htonl(stat->f_bavail);
546 return xdr_ressize_check(rqstp, p);
547 }
548
549 int
nfssvc_encode_entry(void * ccdv,const char * name,int namlen,loff_t offset,u64 ino,unsigned int d_type)550 nfssvc_encode_entry(void *ccdv, const char *name,
551 int namlen, loff_t offset, u64 ino, unsigned int d_type)
552 {
553 struct readdir_cd *ccd = ccdv;
554 struct nfsd_readdirres *cd = container_of(ccd, struct nfsd_readdirres, common);
555 __be32 *p = cd->buffer;
556 int buflen, slen;
557
558 /*
559 dprintk("nfsd: entry(%.*s off %ld ino %ld)\n",
560 namlen, name, offset, ino);
561 */
562
563 if (offset > ~((u32) 0)) {
564 cd->common.err = nfserr_fbig;
565 return -EINVAL;
566 }
567 if (cd->offset)
568 *cd->offset = htonl(offset);
569
570 /* truncate filename */
571 namlen = min(namlen, NFS2_MAXNAMLEN);
572 slen = XDR_QUADLEN(namlen);
573
574 if ((buflen = cd->buflen - slen - 4) < 0) {
575 cd->common.err = nfserr_toosmall;
576 return -EINVAL;
577 }
578 if (ino > ~((u32) 0)) {
579 cd->common.err = nfserr_fbig;
580 return -EINVAL;
581 }
582 *p++ = xdr_one; /* mark entry present */
583 *p++ = htonl((u32) ino); /* file id */
584 p = xdr_encode_array(p, name, namlen);/* name length & name */
585 cd->offset = p; /* remember pointer */
586 *p++ = htonl(~0U); /* offset of next entry */
587
588 cd->buflen = buflen;
589 cd->buffer = p;
590 cd->common.err = nfs_ok;
591 return 0;
592 }
593
594 /*
595 * XDR release functions
596 */
nfssvc_release_attrstat(struct svc_rqst * rqstp)597 void nfssvc_release_attrstat(struct svc_rqst *rqstp)
598 {
599 struct nfsd_attrstat *resp = rqstp->rq_resp;
600
601 fh_put(&resp->fh);
602 }
603
nfssvc_release_diropres(struct svc_rqst * rqstp)604 void nfssvc_release_diropres(struct svc_rqst *rqstp)
605 {
606 struct nfsd_diropres *resp = rqstp->rq_resp;
607
608 fh_put(&resp->fh);
609 }
610
nfssvc_release_readres(struct svc_rqst * rqstp)611 void nfssvc_release_readres(struct svc_rqst *rqstp)
612 {
613 struct nfsd_readres *resp = rqstp->rq_resp;
614
615 fh_put(&resp->fh);
616 }
617