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Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * linux/fs/nfsd/nfs3xdr.c | |
3 | * | |
4 | * XDR support for nfsd/protocol version 3. | |
5 | * | |
6 | * Copyright (C) 1995, 1996, 1997 Olaf Kirch <okir@monad.swb.de> | |
7 | * | |
8 | * 2003-08-09 Jamie Lokier: Use htonl() for nanoseconds, not htons()! | |
9 | */ | |
10 | ||
11 | #include <linux/types.h> | |
12 | #include <linux/time.h> | |
13 | #include <linux/nfs3.h> | |
14 | #include <linux/list.h> | |
15 | #include <linux/spinlock.h> | |
16 | #include <linux/dcache.h> | |
17 | #include <linux/namei.h> | |
18 | #include <linux/mm.h> | |
19 | #include <linux/vfs.h> | |
20 | #include <linux/sunrpc/xdr.h> | |
21 | #include <linux/sunrpc/svc.h> | |
22 | #include <linux/nfsd/nfsd.h> | |
23 | #include <linux/nfsd/xdr3.h> | |
24 | ||
25 | #define NFSDDBG_FACILITY NFSDDBG_XDR | |
26 | ||
1da177e4 LT |
27 | |
28 | /* | |
29 | * Mapping of S_IF* types to NFS file types | |
30 | */ | |
31 | static u32 nfs3_ftypes[] = { | |
32 | NF3NON, NF3FIFO, NF3CHR, NF3BAD, | |
33 | NF3DIR, NF3BAD, NF3BLK, NF3BAD, | |
34 | NF3REG, NF3BAD, NF3LNK, NF3BAD, | |
35 | NF3SOCK, NF3BAD, NF3LNK, NF3BAD, | |
36 | }; | |
37 | ||
38 | /* | |
39 | * XDR functions for basic NFS types | |
40 | */ | |
3ee6f61c | 41 | static __be32 * |
91f07168 | 42 | encode_time3(__be32 *p, struct timespec *time) |
1da177e4 LT |
43 | { |
44 | *p++ = htonl((u32) time->tv_sec); *p++ = htonl(time->tv_nsec); | |
45 | return p; | |
46 | } | |
47 | ||
3ee6f61c | 48 | static __be32 * |
91f07168 | 49 | decode_time3(__be32 *p, struct timespec *time) |
1da177e4 LT |
50 | { |
51 | time->tv_sec = ntohl(*p++); | |
52 | time->tv_nsec = ntohl(*p++); | |
53 | return p; | |
54 | } | |
55 | ||
3ee6f61c | 56 | static __be32 * |
91f07168 | 57 | decode_fh(__be32 *p, struct svc_fh *fhp) |
1da177e4 LT |
58 | { |
59 | unsigned int size; | |
60 | fh_init(fhp, NFS3_FHSIZE); | |
61 | size = ntohl(*p++); | |
62 | if (size > NFS3_FHSIZE) | |
63 | return NULL; | |
64 | ||
65 | memcpy(&fhp->fh_handle.fh_base, p, size); | |
66 | fhp->fh_handle.fh_size = size; | |
67 | return p + XDR_QUADLEN(size); | |
68 | } | |
69 | ||
a257cdd0 | 70 | /* Helper function for NFSv3 ACL code */ |
91f07168 | 71 | __be32 *nfs3svc_decode_fh(__be32 *p, struct svc_fh *fhp) |
a257cdd0 AG |
72 | { |
73 | return decode_fh(p, fhp); | |
74 | } | |
75 | ||
3ee6f61c | 76 | static __be32 * |
91f07168 | 77 | encode_fh(__be32 *p, struct svc_fh *fhp) |
1da177e4 LT |
78 | { |
79 | unsigned int size = fhp->fh_handle.fh_size; | |
80 | *p++ = htonl(size); | |
81 | if (size) p[XDR_QUADLEN(size)-1]=0; | |
82 | memcpy(p, &fhp->fh_handle.fh_base, size); | |
83 | return p + XDR_QUADLEN(size); | |
84 | } | |
85 | ||
86 | /* | |
87 | * Decode a file name and make sure that the path contains | |
88 | * no slashes or null bytes. | |
89 | */ | |
3ee6f61c | 90 | static __be32 * |
91f07168 | 91 | decode_filename(__be32 *p, char **namp, int *lenp) |
1da177e4 LT |
92 | { |
93 | char *name; | |
94 | int i; | |
95 | ||
96 | if ((p = xdr_decode_string_inplace(p, namp, lenp, NFS3_MAXNAMLEN)) != NULL) { | |
97 | for (i = 0, name = *namp; i < *lenp; i++, name++) { | |
98 | if (*name == '\0' || *name == '/') | |
99 | return NULL; | |
100 | } | |
101 | } | |
102 | ||
103 | return p; | |
104 | } | |
105 | ||
3ee6f61c | 106 | static __be32 * |
91f07168 | 107 | decode_sattr3(__be32 *p, struct iattr *iap) |
1da177e4 LT |
108 | { |
109 | u32 tmp; | |
110 | ||
111 | iap->ia_valid = 0; | |
112 | ||
113 | if (*p++) { | |
114 | iap->ia_valid |= ATTR_MODE; | |
115 | iap->ia_mode = ntohl(*p++); | |
116 | } | |
117 | if (*p++) { | |
118 | iap->ia_valid |= ATTR_UID; | |
119 | iap->ia_uid = ntohl(*p++); | |
120 | } | |
121 | if (*p++) { | |
122 | iap->ia_valid |= ATTR_GID; | |
123 | iap->ia_gid = ntohl(*p++); | |
124 | } | |
125 | if (*p++) { | |
126 | u64 newsize; | |
127 | ||
128 | iap->ia_valid |= ATTR_SIZE; | |
129 | p = xdr_decode_hyper(p, &newsize); | |
130 | if (newsize <= NFS_OFFSET_MAX) | |
131 | iap->ia_size = newsize; | |
132 | else | |
133 | iap->ia_size = NFS_OFFSET_MAX; | |
134 | } | |
135 | if ((tmp = ntohl(*p++)) == 1) { /* set to server time */ | |
136 | iap->ia_valid |= ATTR_ATIME; | |
137 | } else if (tmp == 2) { /* set to client time */ | |
138 | iap->ia_valid |= ATTR_ATIME | ATTR_ATIME_SET; | |
139 | iap->ia_atime.tv_sec = ntohl(*p++); | |
140 | iap->ia_atime.tv_nsec = ntohl(*p++); | |
141 | } | |
142 | if ((tmp = ntohl(*p++)) == 1) { /* set to server time */ | |
143 | iap->ia_valid |= ATTR_MTIME; | |
144 | } else if (tmp == 2) { /* set to client time */ | |
145 | iap->ia_valid |= ATTR_MTIME | ATTR_MTIME_SET; | |
146 | iap->ia_mtime.tv_sec = ntohl(*p++); | |
147 | iap->ia_mtime.tv_nsec = ntohl(*p++); | |
148 | } | |
149 | return p; | |
150 | } | |
151 | ||
3ee6f61c | 152 | static __be32 * |
91f07168 | 153 | encode_fattr3(struct svc_rqst *rqstp, __be32 *p, struct svc_fh *fhp, |
a334de28 | 154 | struct kstat *stat) |
1da177e4 | 155 | { |
1da177e4 | 156 | struct dentry *dentry = fhp->fh_dentry; |
1da177e4 LT |
157 | struct timespec time; |
158 | ||
a334de28 DS |
159 | *p++ = htonl(nfs3_ftypes[(stat->mode & S_IFMT) >> 12]); |
160 | *p++ = htonl((u32) stat->mode); | |
161 | *p++ = htonl((u32) stat->nlink); | |
162 | *p++ = htonl((u32) nfsd_ruid(rqstp, stat->uid)); | |
163 | *p++ = htonl((u32) nfsd_rgid(rqstp, stat->gid)); | |
164 | if (S_ISLNK(stat->mode) && stat->size > NFS3_MAXPATHLEN) { | |
1da177e4 LT |
165 | p = xdr_encode_hyper(p, (u64) NFS3_MAXPATHLEN); |
166 | } else { | |
a334de28 | 167 | p = xdr_encode_hyper(p, (u64) stat->size); |
1da177e4 | 168 | } |
a334de28 DS |
169 | p = xdr_encode_hyper(p, ((u64)stat->blocks) << 9); |
170 | *p++ = htonl((u32) MAJOR(stat->rdev)); | |
171 | *p++ = htonl((u32) MINOR(stat->rdev)); | |
1da177e4 LT |
172 | if (is_fsid(fhp, rqstp->rq_reffh)) |
173 | p = xdr_encode_hyper(p, (u64) fhp->fh_export->ex_fsid); | |
174 | else | |
a334de28 DS |
175 | p = xdr_encode_hyper(p, (u64) huge_encode_dev(stat->dev)); |
176 | p = xdr_encode_hyper(p, (u64) stat->ino); | |
177 | p = encode_time3(p, &stat->atime); | |
1da177e4 LT |
178 | lease_get_mtime(dentry->d_inode, &time); |
179 | p = encode_time3(p, &time); | |
a334de28 | 180 | p = encode_time3(p, &stat->ctime); |
1da177e4 LT |
181 | |
182 | return p; | |
183 | } | |
184 | ||
3ee6f61c | 185 | static __be32 * |
91f07168 | 186 | encode_saved_post_attr(struct svc_rqst *rqstp, __be32 *p, struct svc_fh *fhp) |
1da177e4 LT |
187 | { |
188 | struct inode *inode = fhp->fh_dentry->d_inode; | |
189 | ||
190 | /* Attributes to follow */ | |
191 | *p++ = xdr_one; | |
192 | ||
193 | *p++ = htonl(nfs3_ftypes[(fhp->fh_post_mode & S_IFMT) >> 12]); | |
194 | *p++ = htonl((u32) fhp->fh_post_mode); | |
195 | *p++ = htonl((u32) fhp->fh_post_nlink); | |
196 | *p++ = htonl((u32) nfsd_ruid(rqstp, fhp->fh_post_uid)); | |
197 | *p++ = htonl((u32) nfsd_rgid(rqstp, fhp->fh_post_gid)); | |
198 | if (S_ISLNK(fhp->fh_post_mode) && fhp->fh_post_size > NFS3_MAXPATHLEN) { | |
199 | p = xdr_encode_hyper(p, (u64) NFS3_MAXPATHLEN); | |
200 | } else { | |
201 | p = xdr_encode_hyper(p, (u64) fhp->fh_post_size); | |
202 | } | |
203 | p = xdr_encode_hyper(p, ((u64)fhp->fh_post_blocks) << 9); | |
204 | *p++ = fhp->fh_post_rdev[0]; | |
205 | *p++ = fhp->fh_post_rdev[1]; | |
206 | if (is_fsid(fhp, rqstp->rq_reffh)) | |
207 | p = xdr_encode_hyper(p, (u64) fhp->fh_export->ex_fsid); | |
208 | else | |
209 | p = xdr_encode_hyper(p, (u64)huge_encode_dev(inode->i_sb->s_dev)); | |
210 | p = xdr_encode_hyper(p, (u64) inode->i_ino); | |
211 | p = encode_time3(p, &fhp->fh_post_atime); | |
212 | p = encode_time3(p, &fhp->fh_post_mtime); | |
213 | p = encode_time3(p, &fhp->fh_post_ctime); | |
214 | ||
215 | return p; | |
216 | } | |
217 | ||
218 | /* | |
219 | * Encode post-operation attributes. | |
220 | * The inode may be NULL if the call failed because of a stale file | |
221 | * handle. In this case, no attributes are returned. | |
222 | */ | |
91f07168 AV |
223 | static __be32 * |
224 | encode_post_op_attr(struct svc_rqst *rqstp, __be32 *p, struct svc_fh *fhp) | |
1da177e4 LT |
225 | { |
226 | struct dentry *dentry = fhp->fh_dentry; | |
227 | if (dentry && dentry->d_inode != NULL) { | |
a334de28 DS |
228 | int err; |
229 | struct kstat stat; | |
230 | ||
231 | err = vfs_getattr(fhp->fh_export->ex_mnt, dentry, &stat); | |
232 | if (!err) { | |
233 | *p++ = xdr_one; /* attributes follow */ | |
234 | return encode_fattr3(rqstp, p, fhp, &stat); | |
235 | } | |
1da177e4 LT |
236 | } |
237 | *p++ = xdr_zero; | |
238 | return p; | |
239 | } | |
240 | ||
a257cdd0 | 241 | /* Helper for NFSv3 ACLs */ |
91f07168 AV |
242 | __be32 * |
243 | nfs3svc_encode_post_op_attr(struct svc_rqst *rqstp, __be32 *p, struct svc_fh *fhp) | |
a257cdd0 AG |
244 | { |
245 | return encode_post_op_attr(rqstp, p, fhp); | |
246 | } | |
247 | ||
1da177e4 LT |
248 | /* |
249 | * Enocde weak cache consistency data | |
250 | */ | |
91f07168 AV |
251 | static __be32 * |
252 | encode_wcc_data(struct svc_rqst *rqstp, __be32 *p, struct svc_fh *fhp) | |
1da177e4 LT |
253 | { |
254 | struct dentry *dentry = fhp->fh_dentry; | |
255 | ||
256 | if (dentry && dentry->d_inode && fhp->fh_post_saved) { | |
257 | if (fhp->fh_pre_saved) { | |
258 | *p++ = xdr_one; | |
259 | p = xdr_encode_hyper(p, (u64) fhp->fh_pre_size); | |
260 | p = encode_time3(p, &fhp->fh_pre_mtime); | |
261 | p = encode_time3(p, &fhp->fh_pre_ctime); | |
262 | } else { | |
263 | *p++ = xdr_zero; | |
264 | } | |
265 | return encode_saved_post_attr(rqstp, p, fhp); | |
266 | } | |
267 | /* no pre- or post-attrs */ | |
268 | *p++ = xdr_zero; | |
269 | return encode_post_op_attr(rqstp, p, fhp); | |
270 | } | |
271 | ||
272 | ||
273 | /* | |
274 | * XDR decode functions | |
275 | */ | |
276 | int | |
91f07168 | 277 | nfs3svc_decode_fhandle(struct svc_rqst *rqstp, __be32 *p, struct nfsd_fhandle *args) |
1da177e4 LT |
278 | { |
279 | if (!(p = decode_fh(p, &args->fh))) | |
280 | return 0; | |
281 | return xdr_argsize_check(rqstp, p); | |
282 | } | |
283 | ||
284 | int | |
91f07168 | 285 | nfs3svc_decode_sattrargs(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
286 | struct nfsd3_sattrargs *args) |
287 | { | |
288 | if (!(p = decode_fh(p, &args->fh)) | |
289 | || !(p = decode_sattr3(p, &args->attrs))) | |
290 | return 0; | |
291 | ||
292 | if ((args->check_guard = ntohl(*p++)) != 0) { | |
293 | struct timespec time; | |
294 | p = decode_time3(p, &time); | |
295 | args->guardtime = time.tv_sec; | |
296 | } | |
297 | ||
298 | return xdr_argsize_check(rqstp, p); | |
299 | } | |
300 | ||
301 | int | |
91f07168 | 302 | nfs3svc_decode_diropargs(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
303 | struct nfsd3_diropargs *args) |
304 | { | |
305 | if (!(p = decode_fh(p, &args->fh)) | |
306 | || !(p = decode_filename(p, &args->name, &args->len))) | |
307 | return 0; | |
308 | ||
309 | return xdr_argsize_check(rqstp, p); | |
310 | } | |
311 | ||
312 | int | |
91f07168 | 313 | nfs3svc_decode_accessargs(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
314 | struct nfsd3_accessargs *args) |
315 | { | |
316 | if (!(p = decode_fh(p, &args->fh))) | |
317 | return 0; | |
318 | args->access = ntohl(*p++); | |
319 | ||
320 | return xdr_argsize_check(rqstp, p); | |
321 | } | |
322 | ||
323 | int | |
91f07168 | 324 | nfs3svc_decode_readargs(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
325 | struct nfsd3_readargs *args) |
326 | { | |
327 | unsigned int len; | |
328 | int v,pn; | |
7adae489 | 329 | u32 max_blocksize = svc_max_payload(rqstp); |
1da177e4 LT |
330 | |
331 | if (!(p = decode_fh(p, &args->fh)) | |
332 | || !(p = xdr_decode_hyper(p, &args->offset))) | |
333 | return 0; | |
334 | ||
335 | len = args->count = ntohl(*p++); | |
336 | ||
7adae489 GB |
337 | if (len > max_blocksize) |
338 | len = max_blocksize; | |
1da177e4 LT |
339 | |
340 | /* set up the kvec */ | |
341 | v=0; | |
342 | while (len > 0) { | |
44524359 | 343 | pn = rqstp->rq_resused++; |
3cc03b16 N |
344 | rqstp->rq_vec[v].iov_base = page_address(rqstp->rq_respages[pn]); |
345 | rqstp->rq_vec[v].iov_len = len < PAGE_SIZE? len : PAGE_SIZE; | |
346 | len -= rqstp->rq_vec[v].iov_len; | |
1da177e4 LT |
347 | v++; |
348 | } | |
349 | args->vlen = v; | |
350 | return xdr_argsize_check(rqstp, p); | |
351 | } | |
352 | ||
353 | int | |
91f07168 | 354 | nfs3svc_decode_writeargs(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
355 | struct nfsd3_writeargs *args) |
356 | { | |
357 | unsigned int len, v, hdr; | |
7adae489 | 358 | u32 max_blocksize = svc_max_payload(rqstp); |
1da177e4 LT |
359 | |
360 | if (!(p = decode_fh(p, &args->fh)) | |
361 | || !(p = xdr_decode_hyper(p, &args->offset))) | |
362 | return 0; | |
363 | ||
364 | args->count = ntohl(*p++); | |
365 | args->stable = ntohl(*p++); | |
366 | len = args->len = ntohl(*p++); | |
367 | ||
368 | hdr = (void*)p - rqstp->rq_arg.head[0].iov_base; | |
0ba7536d N |
369 | if (rqstp->rq_arg.len < hdr || |
370 | rqstp->rq_arg.len - hdr < len) | |
1da177e4 LT |
371 | return 0; |
372 | ||
3cc03b16 N |
373 | rqstp->rq_vec[0].iov_base = (void*)p; |
374 | rqstp->rq_vec[0].iov_len = rqstp->rq_arg.head[0].iov_len - hdr; | |
1da177e4 | 375 | |
7adae489 GB |
376 | if (len > max_blocksize) |
377 | len = max_blocksize; | |
1da177e4 | 378 | v= 0; |
3cc03b16 N |
379 | while (len > rqstp->rq_vec[v].iov_len) { |
380 | len -= rqstp->rq_vec[v].iov_len; | |
1da177e4 | 381 | v++; |
3cc03b16 N |
382 | rqstp->rq_vec[v].iov_base = page_address(rqstp->rq_pages[v]); |
383 | rqstp->rq_vec[v].iov_len = PAGE_SIZE; | |
1da177e4 | 384 | } |
3cc03b16 | 385 | rqstp->rq_vec[v].iov_len = len; |
1da177e4 LT |
386 | args->vlen = v+1; |
387 | ||
3cc03b16 | 388 | return args->count == args->len && rqstp->rq_vec[0].iov_len > 0; |
1da177e4 LT |
389 | } |
390 | ||
391 | int | |
91f07168 | 392 | nfs3svc_decode_createargs(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
393 | struct nfsd3_createargs *args) |
394 | { | |
395 | if (!(p = decode_fh(p, &args->fh)) | |
396 | || !(p = decode_filename(p, &args->name, &args->len))) | |
397 | return 0; | |
398 | ||
399 | switch (args->createmode = ntohl(*p++)) { | |
400 | case NFS3_CREATE_UNCHECKED: | |
401 | case NFS3_CREATE_GUARDED: | |
402 | if (!(p = decode_sattr3(p, &args->attrs))) | |
403 | return 0; | |
404 | break; | |
405 | case NFS3_CREATE_EXCLUSIVE: | |
406 | args->verf = p; | |
407 | p += 2; | |
408 | break; | |
409 | default: | |
410 | return 0; | |
411 | } | |
412 | ||
413 | return xdr_argsize_check(rqstp, p); | |
414 | } | |
415 | int | |
91f07168 | 416 | nfs3svc_decode_mkdirargs(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
417 | struct nfsd3_createargs *args) |
418 | { | |
419 | if (!(p = decode_fh(p, &args->fh)) | |
420 | || !(p = decode_filename(p, &args->name, &args->len)) | |
421 | || !(p = decode_sattr3(p, &args->attrs))) | |
422 | return 0; | |
423 | ||
424 | return xdr_argsize_check(rqstp, p); | |
425 | } | |
426 | ||
427 | int | |
91f07168 | 428 | nfs3svc_decode_symlinkargs(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
429 | struct nfsd3_symlinkargs *args) |
430 | { | |
431 | unsigned int len; | |
432 | int avail; | |
433 | char *old, *new; | |
434 | struct kvec *vec; | |
435 | ||
436 | if (!(p = decode_fh(p, &args->ffh)) | |
437 | || !(p = decode_filename(p, &args->fname, &args->flen)) | |
438 | || !(p = decode_sattr3(p, &args->attrs)) | |
439 | ) | |
440 | return 0; | |
441 | /* now decode the pathname, which might be larger than the first page. | |
442 | * As we have to check for nul's anyway, we copy it into a new page | |
443 | * This page appears in the rq_res.pages list, but as pages_len is always | |
444 | * 0, it won't get in the way | |
445 | */ | |
1da177e4 LT |
446 | len = ntohl(*p++); |
447 | if (len == 0 || len > NFS3_MAXPATHLEN || len >= PAGE_SIZE) | |
448 | return 0; | |
44524359 N |
449 | args->tname = new = |
450 | page_address(rqstp->rq_respages[rqstp->rq_resused++]); | |
1da177e4 LT |
451 | args->tlen = len; |
452 | /* first copy and check from the first page */ | |
453 | old = (char*)p; | |
454 | vec = &rqstp->rq_arg.head[0]; | |
455 | avail = vec->iov_len - (old - (char*)vec->iov_base); | |
456 | while (len && avail && *old) { | |
457 | *new++ = *old++; | |
458 | len--; | |
459 | avail--; | |
460 | } | |
461 | /* now copy next page if there is one */ | |
462 | if (len && !avail && rqstp->rq_arg.page_len) { | |
463 | avail = rqstp->rq_arg.page_len; | |
464 | if (avail > PAGE_SIZE) avail = PAGE_SIZE; | |
465 | old = page_address(rqstp->rq_arg.pages[0]); | |
466 | } | |
467 | while (len && avail && *old) { | |
468 | *new++ = *old++; | |
469 | len--; | |
470 | avail--; | |
471 | } | |
472 | *new = '\0'; | |
473 | if (len) | |
474 | return 0; | |
475 | ||
476 | return 1; | |
477 | } | |
478 | ||
479 | int | |
91f07168 | 480 | nfs3svc_decode_mknodargs(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
481 | struct nfsd3_mknodargs *args) |
482 | { | |
483 | if (!(p = decode_fh(p, &args->fh)) | |
484 | || !(p = decode_filename(p, &args->name, &args->len))) | |
485 | return 0; | |
486 | ||
487 | args->ftype = ntohl(*p++); | |
488 | ||
489 | if (args->ftype == NF3BLK || args->ftype == NF3CHR | |
490 | || args->ftype == NF3SOCK || args->ftype == NF3FIFO) { | |
491 | if (!(p = decode_sattr3(p, &args->attrs))) | |
492 | return 0; | |
493 | } | |
494 | ||
495 | if (args->ftype == NF3BLK || args->ftype == NF3CHR) { | |
496 | args->major = ntohl(*p++); | |
497 | args->minor = ntohl(*p++); | |
498 | } | |
499 | ||
500 | return xdr_argsize_check(rqstp, p); | |
501 | } | |
502 | ||
503 | int | |
91f07168 | 504 | nfs3svc_decode_renameargs(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
505 | struct nfsd3_renameargs *args) |
506 | { | |
507 | if (!(p = decode_fh(p, &args->ffh)) | |
508 | || !(p = decode_filename(p, &args->fname, &args->flen)) | |
509 | || !(p = decode_fh(p, &args->tfh)) | |
510 | || !(p = decode_filename(p, &args->tname, &args->tlen))) | |
511 | return 0; | |
512 | ||
513 | return xdr_argsize_check(rqstp, p); | |
514 | } | |
515 | ||
516 | int | |
91f07168 | 517 | nfs3svc_decode_readlinkargs(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
518 | struct nfsd3_readlinkargs *args) |
519 | { | |
520 | if (!(p = decode_fh(p, &args->fh))) | |
521 | return 0; | |
44524359 N |
522 | args->buffer = |
523 | page_address(rqstp->rq_respages[rqstp->rq_resused++]); | |
1da177e4 LT |
524 | |
525 | return xdr_argsize_check(rqstp, p); | |
526 | } | |
527 | ||
528 | int | |
91f07168 | 529 | nfs3svc_decode_linkargs(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
530 | struct nfsd3_linkargs *args) |
531 | { | |
532 | if (!(p = decode_fh(p, &args->ffh)) | |
533 | || !(p = decode_fh(p, &args->tfh)) | |
534 | || !(p = decode_filename(p, &args->tname, &args->tlen))) | |
535 | return 0; | |
536 | ||
537 | return xdr_argsize_check(rqstp, p); | |
538 | } | |
539 | ||
540 | int | |
91f07168 | 541 | nfs3svc_decode_readdirargs(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
542 | struct nfsd3_readdirargs *args) |
543 | { | |
544 | if (!(p = decode_fh(p, &args->fh))) | |
545 | return 0; | |
546 | p = xdr_decode_hyper(p, &args->cookie); | |
547 | args->verf = p; p += 2; | |
548 | args->dircount = ~0; | |
549 | args->count = ntohl(*p++); | |
550 | ||
551 | if (args->count > PAGE_SIZE) | |
552 | args->count = PAGE_SIZE; | |
553 | ||
44524359 N |
554 | args->buffer = |
555 | page_address(rqstp->rq_respages[rqstp->rq_resused++]); | |
1da177e4 LT |
556 | |
557 | return xdr_argsize_check(rqstp, p); | |
558 | } | |
559 | ||
560 | int | |
91f07168 | 561 | nfs3svc_decode_readdirplusargs(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
562 | struct nfsd3_readdirargs *args) |
563 | { | |
564 | int len, pn; | |
7adae489 | 565 | u32 max_blocksize = svc_max_payload(rqstp); |
1da177e4 LT |
566 | |
567 | if (!(p = decode_fh(p, &args->fh))) | |
568 | return 0; | |
569 | p = xdr_decode_hyper(p, &args->cookie); | |
570 | args->verf = p; p += 2; | |
571 | args->dircount = ntohl(*p++); | |
572 | args->count = ntohl(*p++); | |
573 | ||
7adae489 | 574 | len = (args->count > max_blocksize) ? max_blocksize : |
1da177e4 LT |
575 | args->count; |
576 | args->count = len; | |
577 | ||
578 | while (len > 0) { | |
44524359 | 579 | pn = rqstp->rq_resused++; |
1da177e4 LT |
580 | if (!args->buffer) |
581 | args->buffer = page_address(rqstp->rq_respages[pn]); | |
582 | len -= PAGE_SIZE; | |
583 | } | |
584 | ||
585 | return xdr_argsize_check(rqstp, p); | |
586 | } | |
587 | ||
588 | int | |
91f07168 | 589 | nfs3svc_decode_commitargs(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
590 | struct nfsd3_commitargs *args) |
591 | { | |
592 | if (!(p = decode_fh(p, &args->fh))) | |
593 | return 0; | |
594 | p = xdr_decode_hyper(p, &args->offset); | |
595 | args->count = ntohl(*p++); | |
596 | ||
597 | return xdr_argsize_check(rqstp, p); | |
598 | } | |
599 | ||
600 | /* | |
601 | * XDR encode functions | |
602 | */ | |
603 | /* | |
604 | * There must be an encoding function for void results so svc_process | |
605 | * will work properly. | |
606 | */ | |
607 | int | |
91f07168 | 608 | nfs3svc_encode_voidres(struct svc_rqst *rqstp, __be32 *p, void *dummy) |
1da177e4 LT |
609 | { |
610 | return xdr_ressize_check(rqstp, p); | |
611 | } | |
612 | ||
613 | /* GETATTR */ | |
614 | int | |
91f07168 | 615 | nfs3svc_encode_attrstat(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
616 | struct nfsd3_attrstat *resp) |
617 | { | |
618 | if (resp->status == 0) | |
a334de28 | 619 | p = encode_fattr3(rqstp, p, &resp->fh, &resp->stat); |
1da177e4 LT |
620 | return xdr_ressize_check(rqstp, p); |
621 | } | |
622 | ||
623 | /* SETATTR, REMOVE, RMDIR */ | |
624 | int | |
91f07168 | 625 | nfs3svc_encode_wccstat(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
626 | struct nfsd3_attrstat *resp) |
627 | { | |
628 | p = encode_wcc_data(rqstp, p, &resp->fh); | |
629 | return xdr_ressize_check(rqstp, p); | |
630 | } | |
631 | ||
632 | /* LOOKUP */ | |
633 | int | |
91f07168 | 634 | nfs3svc_encode_diropres(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
635 | struct nfsd3_diropres *resp) |
636 | { | |
637 | if (resp->status == 0) { | |
638 | p = encode_fh(p, &resp->fh); | |
639 | p = encode_post_op_attr(rqstp, p, &resp->fh); | |
640 | } | |
641 | p = encode_post_op_attr(rqstp, p, &resp->dirfh); | |
642 | return xdr_ressize_check(rqstp, p); | |
643 | } | |
644 | ||
645 | /* ACCESS */ | |
646 | int | |
91f07168 | 647 | nfs3svc_encode_accessres(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
648 | struct nfsd3_accessres *resp) |
649 | { | |
650 | p = encode_post_op_attr(rqstp, p, &resp->fh); | |
651 | if (resp->status == 0) | |
652 | *p++ = htonl(resp->access); | |
653 | return xdr_ressize_check(rqstp, p); | |
654 | } | |
655 | ||
656 | /* READLINK */ | |
657 | int | |
91f07168 | 658 | nfs3svc_encode_readlinkres(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
659 | struct nfsd3_readlinkres *resp) |
660 | { | |
661 | p = encode_post_op_attr(rqstp, p, &resp->fh); | |
662 | if (resp->status == 0) { | |
663 | *p++ = htonl(resp->len); | |
664 | xdr_ressize_check(rqstp, p); | |
665 | rqstp->rq_res.page_len = resp->len; | |
666 | if (resp->len & 3) { | |
667 | /* need to pad the tail */ | |
1da177e4 LT |
668 | rqstp->rq_res.tail[0].iov_base = p; |
669 | *p = 0; | |
670 | rqstp->rq_res.tail[0].iov_len = 4 - (resp->len&3); | |
671 | } | |
672 | return 1; | |
673 | } else | |
674 | return xdr_ressize_check(rqstp, p); | |
675 | } | |
676 | ||
677 | /* READ */ | |
678 | int | |
91f07168 | 679 | nfs3svc_encode_readres(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
680 | struct nfsd3_readres *resp) |
681 | { | |
682 | p = encode_post_op_attr(rqstp, p, &resp->fh); | |
683 | if (resp->status == 0) { | |
684 | *p++ = htonl(resp->count); | |
685 | *p++ = htonl(resp->eof); | |
686 | *p++ = htonl(resp->count); /* xdr opaque count */ | |
687 | xdr_ressize_check(rqstp, p); | |
688 | /* now update rqstp->rq_res to reflect data aswell */ | |
689 | rqstp->rq_res.page_len = resp->count; | |
690 | if (resp->count & 3) { | |
691 | /* need to pad the tail */ | |
1da177e4 LT |
692 | rqstp->rq_res.tail[0].iov_base = p; |
693 | *p = 0; | |
694 | rqstp->rq_res.tail[0].iov_len = 4 - (resp->count & 3); | |
695 | } | |
696 | return 1; | |
697 | } else | |
698 | return xdr_ressize_check(rqstp, p); | |
699 | } | |
700 | ||
701 | /* WRITE */ | |
702 | int | |
91f07168 | 703 | nfs3svc_encode_writeres(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
704 | struct nfsd3_writeres *resp) |
705 | { | |
706 | p = encode_wcc_data(rqstp, p, &resp->fh); | |
707 | if (resp->status == 0) { | |
708 | *p++ = htonl(resp->count); | |
709 | *p++ = htonl(resp->committed); | |
710 | *p++ = htonl(nfssvc_boot.tv_sec); | |
711 | *p++ = htonl(nfssvc_boot.tv_usec); | |
712 | } | |
713 | return xdr_ressize_check(rqstp, p); | |
714 | } | |
715 | ||
716 | /* CREATE, MKDIR, SYMLINK, MKNOD */ | |
717 | int | |
91f07168 | 718 | nfs3svc_encode_createres(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
719 | struct nfsd3_diropres *resp) |
720 | { | |
721 | if (resp->status == 0) { | |
722 | *p++ = xdr_one; | |
723 | p = encode_fh(p, &resp->fh); | |
724 | p = encode_post_op_attr(rqstp, p, &resp->fh); | |
725 | } | |
726 | p = encode_wcc_data(rqstp, p, &resp->dirfh); | |
727 | return xdr_ressize_check(rqstp, p); | |
728 | } | |
729 | ||
730 | /* RENAME */ | |
731 | int | |
91f07168 | 732 | nfs3svc_encode_renameres(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
733 | struct nfsd3_renameres *resp) |
734 | { | |
735 | p = encode_wcc_data(rqstp, p, &resp->ffh); | |
736 | p = encode_wcc_data(rqstp, p, &resp->tfh); | |
737 | return xdr_ressize_check(rqstp, p); | |
738 | } | |
739 | ||
740 | /* LINK */ | |
741 | int | |
91f07168 | 742 | nfs3svc_encode_linkres(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
743 | struct nfsd3_linkres *resp) |
744 | { | |
745 | p = encode_post_op_attr(rqstp, p, &resp->fh); | |
746 | p = encode_wcc_data(rqstp, p, &resp->tfh); | |
747 | return xdr_ressize_check(rqstp, p); | |
748 | } | |
749 | ||
750 | /* READDIR */ | |
751 | int | |
91f07168 | 752 | nfs3svc_encode_readdirres(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
753 | struct nfsd3_readdirres *resp) |
754 | { | |
755 | p = encode_post_op_attr(rqstp, p, &resp->fh); | |
756 | ||
757 | if (resp->status == 0) { | |
758 | /* stupid readdir cookie */ | |
759 | memcpy(p, resp->verf, 8); p += 2; | |
760 | xdr_ressize_check(rqstp, p); | |
761 | if (rqstp->rq_res.head[0].iov_len + (2<<2) > PAGE_SIZE) | |
762 | return 1; /*No room for trailer */ | |
763 | rqstp->rq_res.page_len = (resp->count) << 2; | |
764 | ||
765 | /* add the 'tail' to the end of the 'head' page - page 0. */ | |
1da177e4 LT |
766 | rqstp->rq_res.tail[0].iov_base = p; |
767 | *p++ = 0; /* no more entries */ | |
768 | *p++ = htonl(resp->common.err == nfserr_eof); | |
769 | rqstp->rq_res.tail[0].iov_len = 2<<2; | |
770 | return 1; | |
771 | } else | |
772 | return xdr_ressize_check(rqstp, p); | |
773 | } | |
774 | ||
3ee6f61c | 775 | static __be32 * |
91f07168 | 776 | encode_entry_baggage(struct nfsd3_readdirres *cd, __be32 *p, const char *name, |
1da177e4 LT |
777 | int namlen, ino_t ino) |
778 | { | |
779 | *p++ = xdr_one; /* mark entry present */ | |
780 | p = xdr_encode_hyper(p, ino); /* file id */ | |
781 | p = xdr_encode_array(p, name, namlen);/* name length & name */ | |
782 | ||
783 | cd->offset = p; /* remember pointer */ | |
784 | p = xdr_encode_hyper(p, NFS_OFFSET_MAX);/* offset of next entry */ | |
785 | ||
786 | return p; | |
787 | } | |
788 | ||
3ee6f61c | 789 | static __be32 * |
91f07168 | 790 | encode_entryplus_baggage(struct nfsd3_readdirres *cd, __be32 *p, |
1da177e4 LT |
791 | struct svc_fh *fhp) |
792 | { | |
793 | p = encode_post_op_attr(cd->rqstp, p, fhp); | |
794 | *p++ = xdr_one; /* yes, a file handle follows */ | |
795 | p = encode_fh(p, fhp); | |
796 | fh_put(fhp); | |
797 | return p; | |
798 | } | |
799 | ||
800 | static int | |
801 | compose_entry_fh(struct nfsd3_readdirres *cd, struct svc_fh *fhp, | |
802 | const char *name, int namlen) | |
803 | { | |
804 | struct svc_export *exp; | |
805 | struct dentry *dparent, *dchild; | |
806 | int rv = 0; | |
807 | ||
808 | dparent = cd->fh.fh_dentry; | |
809 | exp = cd->fh.fh_export; | |
810 | ||
811 | fh_init(fhp, NFS3_FHSIZE); | |
812 | if (isdotent(name, namlen)) { | |
813 | if (namlen == 2) { | |
814 | dchild = dget_parent(dparent); | |
815 | if (dchild == dparent) { | |
816 | /* filesystem root - cannot return filehandle for ".." */ | |
817 | dput(dchild); | |
818 | return 1; | |
819 | } | |
820 | } else | |
821 | dchild = dget(dparent); | |
822 | } else | |
823 | dchild = lookup_one_len(name, dparent, namlen); | |
824 | if (IS_ERR(dchild)) | |
825 | return 1; | |
826 | if (d_mountpoint(dchild) || | |
827 | fh_compose(fhp, exp, dchild, &cd->fh) != 0 || | |
828 | !dchild->d_inode) | |
829 | rv = 1; | |
830 | dput(dchild); | |
831 | return rv; | |
832 | } | |
833 | ||
834 | /* | |
835 | * Encode a directory entry. This one works for both normal readdir | |
836 | * and readdirplus. | |
837 | * The normal readdir reply requires 2 (fileid) + 1 (stringlen) | |
838 | * + string + 2 (cookie) + 1 (next) words, i.e. 6 + strlen. | |
839 | * | |
840 | * The readdirplus baggage is 1+21 words for post_op_attr, plus the | |
841 | * file handle. | |
842 | */ | |
843 | ||
844 | #define NFS3_ENTRY_BAGGAGE (2 + 1 + 2 + 1) | |
845 | #define NFS3_ENTRYPLUS_BAGGAGE (1 + 21 + 1 + (NFS3_FHSIZE >> 2)) | |
846 | static int | |
847 | encode_entry(struct readdir_cd *ccd, const char *name, | |
848 | int namlen, off_t offset, ino_t ino, unsigned int d_type, int plus) | |
849 | { | |
850 | struct nfsd3_readdirres *cd = container_of(ccd, struct nfsd3_readdirres, | |
851 | common); | |
91f07168 | 852 | __be32 *p = cd->buffer; |
1da177e4 LT |
853 | caddr_t curr_page_addr = NULL; |
854 | int pn; /* current page number */ | |
855 | int slen; /* string (name) length */ | |
856 | int elen; /* estimated entry length in words */ | |
857 | int num_entry_words = 0; /* actual number of words */ | |
858 | ||
859 | if (cd->offset) { | |
860 | u64 offset64 = offset; | |
861 | ||
862 | if (unlikely(cd->offset1)) { | |
863 | /* we ended up with offset on a page boundary */ | |
864 | *cd->offset = htonl(offset64 >> 32); | |
865 | *cd->offset1 = htonl(offset64 & 0xffffffff); | |
866 | cd->offset1 = NULL; | |
867 | } else { | |
868 | xdr_encode_hyper(cd->offset, (u64) offset); | |
869 | } | |
870 | } | |
871 | ||
872 | /* | |
873 | dprintk("encode_entry(%.*s @%ld%s)\n", | |
874 | namlen, name, (long) offset, plus? " plus" : ""); | |
875 | */ | |
876 | ||
877 | /* truncate filename if too long */ | |
878 | if (namlen > NFS3_MAXNAMLEN) | |
879 | namlen = NFS3_MAXNAMLEN; | |
880 | ||
881 | slen = XDR_QUADLEN(namlen); | |
882 | elen = slen + NFS3_ENTRY_BAGGAGE | |
883 | + (plus? NFS3_ENTRYPLUS_BAGGAGE : 0); | |
884 | ||
885 | if (cd->buflen < elen) { | |
886 | cd->common.err = nfserr_toosmall; | |
887 | return -EINVAL; | |
888 | } | |
889 | ||
890 | /* determine which page in rq_respages[] we are currently filling */ | |
891 | for (pn=1; pn < cd->rqstp->rq_resused; pn++) { | |
892 | curr_page_addr = page_address(cd->rqstp->rq_respages[pn]); | |
893 | ||
894 | if (((caddr_t)cd->buffer >= curr_page_addr) && | |
895 | ((caddr_t)cd->buffer < curr_page_addr + PAGE_SIZE)) | |
896 | break; | |
897 | } | |
898 | ||
899 | if ((caddr_t)(cd->buffer + elen) < (curr_page_addr + PAGE_SIZE)) { | |
900 | /* encode entry in current page */ | |
901 | ||
902 | p = encode_entry_baggage(cd, p, name, namlen, ino); | |
903 | ||
904 | /* throw in readdirplus baggage */ | |
905 | if (plus) { | |
906 | struct svc_fh fh; | |
907 | ||
908 | if (compose_entry_fh(cd, &fh, name, namlen) > 0) { | |
909 | *p++ = 0; | |
910 | *p++ = 0; | |
911 | } else | |
912 | p = encode_entryplus_baggage(cd, p, &fh); | |
913 | } | |
914 | num_entry_words = p - cd->buffer; | |
915 | } else if (cd->rqstp->rq_respages[pn+1] != NULL) { | |
916 | /* temporarily encode entry into next page, then move back to | |
917 | * current and next page in rq_respages[] */ | |
91f07168 | 918 | __be32 *p1, *tmp; |
1da177e4 LT |
919 | int len1, len2; |
920 | ||
921 | /* grab next page for temporary storage of entry */ | |
922 | p1 = tmp = page_address(cd->rqstp->rq_respages[pn+1]); | |
923 | ||
924 | p1 = encode_entry_baggage(cd, p1, name, namlen, ino); | |
925 | ||
926 | /* throw in readdirplus baggage */ | |
927 | if (plus) { | |
928 | struct svc_fh fh; | |
929 | ||
930 | if (compose_entry_fh(cd, &fh, name, namlen) > 0) { | |
931 | /* zero out the filehandle */ | |
932 | *p1++ = 0; | |
933 | *p1++ = 0; | |
934 | } else | |
935 | p1 = encode_entryplus_baggage(cd, p1, &fh); | |
936 | } | |
937 | ||
938 | /* determine entry word length and lengths to go in pages */ | |
939 | num_entry_words = p1 - tmp; | |
940 | len1 = curr_page_addr + PAGE_SIZE - (caddr_t)cd->buffer; | |
941 | if ((num_entry_words << 2) < len1) { | |
942 | /* the actual number of words in the entry is less | |
943 | * than elen and can still fit in the current page | |
944 | */ | |
945 | memmove(p, tmp, num_entry_words << 2); | |
946 | p += num_entry_words; | |
947 | ||
948 | /* update offset */ | |
949 | cd->offset = cd->buffer + (cd->offset - tmp); | |
950 | } else { | |
951 | unsigned int offset_r = (cd->offset - tmp) << 2; | |
952 | ||
953 | /* update pointer to offset location. | |
954 | * This is a 64bit quantity, so we need to | |
955 | * deal with 3 cases: | |
956 | * - entirely in first page | |
957 | * - entirely in second page | |
958 | * - 4 bytes in each page | |
959 | */ | |
960 | if (offset_r + 8 <= len1) { | |
961 | cd->offset = p + (cd->offset - tmp); | |
962 | } else if (offset_r >= len1) { | |
963 | cd->offset -= len1 >> 2; | |
964 | } else { | |
965 | /* sitting on the fence */ | |
966 | BUG_ON(offset_r != len1 - 4); | |
967 | cd->offset = p + (cd->offset - tmp); | |
968 | cd->offset1 = tmp; | |
969 | } | |
970 | ||
971 | len2 = (num_entry_words << 2) - len1; | |
972 | ||
973 | /* move from temp page to current and next pages */ | |
974 | memmove(p, tmp, len1); | |
975 | memmove(tmp, (caddr_t)tmp+len1, len2); | |
976 | ||
977 | p = tmp + (len2 >> 2); | |
978 | } | |
979 | } | |
980 | else { | |
981 | cd->common.err = nfserr_toosmall; | |
982 | return -EINVAL; | |
983 | } | |
984 | ||
985 | cd->buflen -= num_entry_words; | |
986 | cd->buffer = p; | |
987 | cd->common.err = nfs_ok; | |
988 | return 0; | |
989 | ||
990 | } | |
991 | ||
992 | int | |
993 | nfs3svc_encode_entry(struct readdir_cd *cd, const char *name, | |
994 | int namlen, loff_t offset, ino_t ino, unsigned int d_type) | |
995 | { | |
996 | return encode_entry(cd, name, namlen, offset, ino, d_type, 0); | |
997 | } | |
998 | ||
999 | int | |
1000 | nfs3svc_encode_entry_plus(struct readdir_cd *cd, const char *name, | |
1001 | int namlen, loff_t offset, ino_t ino, unsigned int d_type) | |
1002 | { | |
1003 | return encode_entry(cd, name, namlen, offset, ino, d_type, 1); | |
1004 | } | |
1005 | ||
1006 | /* FSSTAT */ | |
1007 | int | |
91f07168 | 1008 | nfs3svc_encode_fsstatres(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
1009 | struct nfsd3_fsstatres *resp) |
1010 | { | |
1011 | struct kstatfs *s = &resp->stats; | |
1012 | u64 bs = s->f_bsize; | |
1013 | ||
1014 | *p++ = xdr_zero; /* no post_op_attr */ | |
1015 | ||
1016 | if (resp->status == 0) { | |
1017 | p = xdr_encode_hyper(p, bs * s->f_blocks); /* total bytes */ | |
1018 | p = xdr_encode_hyper(p, bs * s->f_bfree); /* free bytes */ | |
1019 | p = xdr_encode_hyper(p, bs * s->f_bavail); /* user available bytes */ | |
1020 | p = xdr_encode_hyper(p, s->f_files); /* total inodes */ | |
1021 | p = xdr_encode_hyper(p, s->f_ffree); /* free inodes */ | |
1022 | p = xdr_encode_hyper(p, s->f_ffree); /* user available inodes */ | |
1023 | *p++ = htonl(resp->invarsec); /* mean unchanged time */ | |
1024 | } | |
1025 | return xdr_ressize_check(rqstp, p); | |
1026 | } | |
1027 | ||
1028 | /* FSINFO */ | |
1029 | int | |
91f07168 | 1030 | nfs3svc_encode_fsinfores(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
1031 | struct nfsd3_fsinfores *resp) |
1032 | { | |
1033 | *p++ = xdr_zero; /* no post_op_attr */ | |
1034 | ||
1035 | if (resp->status == 0) { | |
1036 | *p++ = htonl(resp->f_rtmax); | |
1037 | *p++ = htonl(resp->f_rtpref); | |
1038 | *p++ = htonl(resp->f_rtmult); | |
1039 | *p++ = htonl(resp->f_wtmax); | |
1040 | *p++ = htonl(resp->f_wtpref); | |
1041 | *p++ = htonl(resp->f_wtmult); | |
1042 | *p++ = htonl(resp->f_dtpref); | |
1043 | p = xdr_encode_hyper(p, resp->f_maxfilesize); | |
1044 | *p++ = xdr_one; | |
1045 | *p++ = xdr_zero; | |
1046 | *p++ = htonl(resp->f_properties); | |
1047 | } | |
1048 | ||
1049 | return xdr_ressize_check(rqstp, p); | |
1050 | } | |
1051 | ||
1052 | /* PATHCONF */ | |
1053 | int | |
91f07168 | 1054 | nfs3svc_encode_pathconfres(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
1055 | struct nfsd3_pathconfres *resp) |
1056 | { | |
1057 | *p++ = xdr_zero; /* no post_op_attr */ | |
1058 | ||
1059 | if (resp->status == 0) { | |
1060 | *p++ = htonl(resp->p_link_max); | |
1061 | *p++ = htonl(resp->p_name_max); | |
1062 | *p++ = htonl(resp->p_no_trunc); | |
1063 | *p++ = htonl(resp->p_chown_restricted); | |
1064 | *p++ = htonl(resp->p_case_insensitive); | |
1065 | *p++ = htonl(resp->p_case_preserving); | |
1066 | } | |
1067 | ||
1068 | return xdr_ressize_check(rqstp, p); | |
1069 | } | |
1070 | ||
1071 | /* COMMIT */ | |
1072 | int | |
91f07168 | 1073 | nfs3svc_encode_commitres(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
1074 | struct nfsd3_commitres *resp) |
1075 | { | |
1076 | p = encode_wcc_data(rqstp, p, &resp->fh); | |
1077 | /* Write verifier */ | |
1078 | if (resp->status == 0) { | |
1079 | *p++ = htonl(nfssvc_boot.tv_sec); | |
1080 | *p++ = htonl(nfssvc_boot.tv_usec); | |
1081 | } | |
1082 | return xdr_ressize_check(rqstp, p); | |
1083 | } | |
1084 | ||
1085 | /* | |
1086 | * XDR release functions | |
1087 | */ | |
1088 | int | |
91f07168 | 1089 | nfs3svc_release_fhandle(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
1090 | struct nfsd3_attrstat *resp) |
1091 | { | |
1092 | fh_put(&resp->fh); | |
1093 | return 1; | |
1094 | } | |
1095 | ||
1096 | int | |
91f07168 | 1097 | nfs3svc_release_fhandle2(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
1098 | struct nfsd3_fhandle_pair *resp) |
1099 | { | |
1100 | fh_put(&resp->fh1); | |
1101 | fh_put(&resp->fh2); | |
1102 | return 1; | |
1103 | } |