Commit | Line | Data |
---|---|---|
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 | ||
af6a4e28 N |
152 | static __be32 *encode_fsid(__be32 *p, struct svc_fh *fhp) |
153 | { | |
154 | u64 f; | |
155 | switch(fsid_source(fhp)) { | |
156 | default: | |
157 | case FSIDSOURCE_DEV: | |
158 | p = xdr_encode_hyper(p, (u64)huge_encode_dev | |
159 | (fhp->fh_dentry->d_inode->i_sb->s_dev)); | |
160 | break; | |
161 | case FSIDSOURCE_FSID: | |
162 | p = xdr_encode_hyper(p, (u64) fhp->fh_export->ex_fsid); | |
163 | break; | |
164 | case FSIDSOURCE_UUID: | |
165 | f = ((u64*)fhp->fh_export->ex_uuid)[0]; | |
166 | f ^= ((u64*)fhp->fh_export->ex_uuid)[1]; | |
167 | p = xdr_encode_hyper(p, f); | |
168 | break; | |
169 | } | |
170 | return p; | |
171 | } | |
172 | ||
3ee6f61c | 173 | static __be32 * |
91f07168 | 174 | encode_fattr3(struct svc_rqst *rqstp, __be32 *p, struct svc_fh *fhp, |
a334de28 | 175 | struct kstat *stat) |
1da177e4 | 176 | { |
a334de28 DS |
177 | *p++ = htonl(nfs3_ftypes[(stat->mode & S_IFMT) >> 12]); |
178 | *p++ = htonl((u32) stat->mode); | |
179 | *p++ = htonl((u32) stat->nlink); | |
180 | *p++ = htonl((u32) nfsd_ruid(rqstp, stat->uid)); | |
181 | *p++ = htonl((u32) nfsd_rgid(rqstp, stat->gid)); | |
182 | if (S_ISLNK(stat->mode) && stat->size > NFS3_MAXPATHLEN) { | |
1da177e4 LT |
183 | p = xdr_encode_hyper(p, (u64) NFS3_MAXPATHLEN); |
184 | } else { | |
a334de28 | 185 | p = xdr_encode_hyper(p, (u64) stat->size); |
1da177e4 | 186 | } |
a334de28 DS |
187 | p = xdr_encode_hyper(p, ((u64)stat->blocks) << 9); |
188 | *p++ = htonl((u32) MAJOR(stat->rdev)); | |
189 | *p++ = htonl((u32) MINOR(stat->rdev)); | |
af6a4e28 | 190 | p = encode_fsid(p, fhp); |
40ee5dc6 | 191 | p = xdr_encode_hyper(p, stat->ino); |
a334de28 | 192 | p = encode_time3(p, &stat->atime); |
40ee5dc6 | 193 | p = encode_time3(p, &stat->mtime); |
a334de28 | 194 | p = encode_time3(p, &stat->ctime); |
1da177e4 LT |
195 | |
196 | return p; | |
197 | } | |
198 | ||
3ee6f61c | 199 | static __be32 * |
91f07168 | 200 | encode_saved_post_attr(struct svc_rqst *rqstp, __be32 *p, struct svc_fh *fhp) |
1da177e4 | 201 | { |
1da177e4 LT |
202 | /* Attributes to follow */ |
203 | *p++ = xdr_one; | |
40ee5dc6 | 204 | return encode_fattr3(rqstp, p, fhp, &fhp->fh_post_attr); |
1da177e4 LT |
205 | } |
206 | ||
207 | /* | |
208 | * Encode post-operation attributes. | |
209 | * The inode may be NULL if the call failed because of a stale file | |
210 | * handle. In this case, no attributes are returned. | |
211 | */ | |
91f07168 AV |
212 | static __be32 * |
213 | encode_post_op_attr(struct svc_rqst *rqstp, __be32 *p, struct svc_fh *fhp) | |
1da177e4 LT |
214 | { |
215 | struct dentry *dentry = fhp->fh_dentry; | |
072f62ed | 216 | if (dentry && dentry->d_inode) { |
a334de28 DS |
217 | int err; |
218 | struct kstat stat; | |
219 | ||
220 | err = vfs_getattr(fhp->fh_export->ex_mnt, dentry, &stat); | |
221 | if (!err) { | |
222 | *p++ = xdr_one; /* attributes follow */ | |
40ee5dc6 | 223 | lease_get_mtime(dentry->d_inode, &stat.mtime); |
a334de28 DS |
224 | return encode_fattr3(rqstp, p, fhp, &stat); |
225 | } | |
1da177e4 LT |
226 | } |
227 | *p++ = xdr_zero; | |
228 | return p; | |
229 | } | |
230 | ||
a257cdd0 | 231 | /* Helper for NFSv3 ACLs */ |
91f07168 AV |
232 | __be32 * |
233 | nfs3svc_encode_post_op_attr(struct svc_rqst *rqstp, __be32 *p, struct svc_fh *fhp) | |
a257cdd0 AG |
234 | { |
235 | return encode_post_op_attr(rqstp, p, fhp); | |
236 | } | |
237 | ||
1da177e4 LT |
238 | /* |
239 | * Enocde weak cache consistency data | |
240 | */ | |
91f07168 AV |
241 | static __be32 * |
242 | encode_wcc_data(struct svc_rqst *rqstp, __be32 *p, struct svc_fh *fhp) | |
1da177e4 LT |
243 | { |
244 | struct dentry *dentry = fhp->fh_dentry; | |
245 | ||
246 | if (dentry && dentry->d_inode && fhp->fh_post_saved) { | |
247 | if (fhp->fh_pre_saved) { | |
248 | *p++ = xdr_one; | |
249 | p = xdr_encode_hyper(p, (u64) fhp->fh_pre_size); | |
250 | p = encode_time3(p, &fhp->fh_pre_mtime); | |
251 | p = encode_time3(p, &fhp->fh_pre_ctime); | |
252 | } else { | |
253 | *p++ = xdr_zero; | |
254 | } | |
255 | return encode_saved_post_attr(rqstp, p, fhp); | |
256 | } | |
257 | /* no pre- or post-attrs */ | |
258 | *p++ = xdr_zero; | |
259 | return encode_post_op_attr(rqstp, p, fhp); | |
260 | } | |
261 | ||
40ee5dc6 PS |
262 | /* |
263 | * Fill in the post_op attr for the wcc data | |
264 | */ | |
265 | void fill_post_wcc(struct svc_fh *fhp) | |
266 | { | |
267 | int err; | |
268 | ||
269 | if (fhp->fh_post_saved) | |
270 | printk("nfsd: inode locked twice during operation.\n"); | |
271 | ||
272 | err = vfs_getattr(fhp->fh_export->ex_mnt, fhp->fh_dentry, | |
273 | &fhp->fh_post_attr); | |
274 | if (err) | |
275 | fhp->fh_post_saved = 0; | |
276 | else | |
277 | fhp->fh_post_saved = 1; | |
278 | } | |
1da177e4 LT |
279 | |
280 | /* | |
281 | * XDR decode functions | |
282 | */ | |
283 | int | |
91f07168 | 284 | nfs3svc_decode_fhandle(struct svc_rqst *rqstp, __be32 *p, struct nfsd_fhandle *args) |
1da177e4 LT |
285 | { |
286 | if (!(p = decode_fh(p, &args->fh))) | |
287 | return 0; | |
288 | return xdr_argsize_check(rqstp, p); | |
289 | } | |
290 | ||
291 | int | |
91f07168 | 292 | nfs3svc_decode_sattrargs(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
293 | struct nfsd3_sattrargs *args) |
294 | { | |
072f62ed | 295 | if (!(p = decode_fh(p, &args->fh))) |
1da177e4 | 296 | return 0; |
072f62ed | 297 | p = decode_sattr3(p, &args->attrs); |
1da177e4 LT |
298 | |
299 | if ((args->check_guard = ntohl(*p++)) != 0) { | |
300 | struct timespec time; | |
301 | p = decode_time3(p, &time); | |
302 | args->guardtime = time.tv_sec; | |
303 | } | |
304 | ||
305 | return xdr_argsize_check(rqstp, p); | |
306 | } | |
307 | ||
308 | int | |
91f07168 | 309 | nfs3svc_decode_diropargs(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
310 | struct nfsd3_diropargs *args) |
311 | { | |
312 | if (!(p = decode_fh(p, &args->fh)) | |
313 | || !(p = decode_filename(p, &args->name, &args->len))) | |
314 | return 0; | |
315 | ||
316 | return xdr_argsize_check(rqstp, p); | |
317 | } | |
318 | ||
319 | int | |
91f07168 | 320 | nfs3svc_decode_accessargs(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
321 | struct nfsd3_accessargs *args) |
322 | { | |
323 | if (!(p = decode_fh(p, &args->fh))) | |
324 | return 0; | |
325 | args->access = ntohl(*p++); | |
326 | ||
327 | return xdr_argsize_check(rqstp, p); | |
328 | } | |
329 | ||
330 | int | |
91f07168 | 331 | nfs3svc_decode_readargs(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
332 | struct nfsd3_readargs *args) |
333 | { | |
334 | unsigned int len; | |
335 | int v,pn; | |
7adae489 | 336 | u32 max_blocksize = svc_max_payload(rqstp); |
1da177e4 | 337 | |
072f62ed | 338 | if (!(p = decode_fh(p, &args->fh))) |
1da177e4 | 339 | return 0; |
072f62ed | 340 | p = xdr_decode_hyper(p, &args->offset); |
1da177e4 LT |
341 | |
342 | len = args->count = ntohl(*p++); | |
343 | ||
7adae489 GB |
344 | if (len > max_blocksize) |
345 | len = max_blocksize; | |
1da177e4 LT |
346 | |
347 | /* set up the kvec */ | |
348 | v=0; | |
349 | while (len > 0) { | |
44524359 | 350 | pn = rqstp->rq_resused++; |
3cc03b16 N |
351 | rqstp->rq_vec[v].iov_base = page_address(rqstp->rq_respages[pn]); |
352 | rqstp->rq_vec[v].iov_len = len < PAGE_SIZE? len : PAGE_SIZE; | |
353 | len -= rqstp->rq_vec[v].iov_len; | |
1da177e4 LT |
354 | v++; |
355 | } | |
356 | args->vlen = v; | |
357 | return xdr_argsize_check(rqstp, p); | |
358 | } | |
359 | ||
360 | int | |
91f07168 | 361 | nfs3svc_decode_writeargs(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
362 | struct nfsd3_writeargs *args) |
363 | { | |
f34b9568 | 364 | unsigned int len, v, hdr, dlen; |
7adae489 | 365 | u32 max_blocksize = svc_max_payload(rqstp); |
1da177e4 | 366 | |
072f62ed | 367 | if (!(p = decode_fh(p, &args->fh))) |
1da177e4 | 368 | return 0; |
072f62ed | 369 | p = xdr_decode_hyper(p, &args->offset); |
1da177e4 LT |
370 | |
371 | args->count = ntohl(*p++); | |
372 | args->stable = ntohl(*p++); | |
373 | len = args->len = ntohl(*p++); | |
f34b9568 PS |
374 | /* |
375 | * The count must equal the amount of data passed. | |
376 | */ | |
377 | if (args->count != args->len) | |
378 | return 0; | |
1da177e4 | 379 | |
f34b9568 PS |
380 | /* |
381 | * Check to make sure that we got the right number of | |
382 | * bytes. | |
f34b9568 | 383 | */ |
1da177e4 | 384 | hdr = (void*)p - rqstp->rq_arg.head[0].iov_base; |
072f62ed N |
385 | dlen = rqstp->rq_arg.head[0].iov_len + rqstp->rq_arg.page_len |
386 | - hdr; | |
f34b9568 PS |
387 | /* |
388 | * Round the length of the data which was specified up to | |
389 | * the next multiple of XDR units and then compare that | |
390 | * against the length which was actually received. | |
391 | */ | |
072f62ed | 392 | if (dlen != XDR_QUADLEN(len)*4) |
1da177e4 LT |
393 | return 0; |
394 | ||
f34b9568 PS |
395 | if (args->count > max_blocksize) { |
396 | args->count = max_blocksize; | |
397 | len = args->len = max_blocksize; | |
398 | } | |
3cc03b16 N |
399 | rqstp->rq_vec[0].iov_base = (void*)p; |
400 | rqstp->rq_vec[0].iov_len = rqstp->rq_arg.head[0].iov_len - hdr; | |
f34b9568 | 401 | v = 0; |
3cc03b16 N |
402 | while (len > rqstp->rq_vec[v].iov_len) { |
403 | len -= rqstp->rq_vec[v].iov_len; | |
1da177e4 | 404 | v++; |
3cc03b16 N |
405 | rqstp->rq_vec[v].iov_base = page_address(rqstp->rq_pages[v]); |
406 | rqstp->rq_vec[v].iov_len = PAGE_SIZE; | |
1da177e4 | 407 | } |
3cc03b16 | 408 | rqstp->rq_vec[v].iov_len = len; |
f34b9568 PS |
409 | args->vlen = v + 1; |
410 | return 1; | |
1da177e4 LT |
411 | } |
412 | ||
413 | int | |
91f07168 | 414 | nfs3svc_decode_createargs(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
415 | struct nfsd3_createargs *args) |
416 | { | |
417 | if (!(p = decode_fh(p, &args->fh)) | |
418 | || !(p = decode_filename(p, &args->name, &args->len))) | |
419 | return 0; | |
420 | ||
421 | switch (args->createmode = ntohl(*p++)) { | |
422 | case NFS3_CREATE_UNCHECKED: | |
423 | case NFS3_CREATE_GUARDED: | |
072f62ed | 424 | p = decode_sattr3(p, &args->attrs); |
1da177e4 LT |
425 | break; |
426 | case NFS3_CREATE_EXCLUSIVE: | |
427 | args->verf = p; | |
428 | p += 2; | |
429 | break; | |
430 | default: | |
431 | return 0; | |
432 | } | |
433 | ||
434 | return xdr_argsize_check(rqstp, p); | |
435 | } | |
436 | int | |
91f07168 | 437 | nfs3svc_decode_mkdirargs(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
438 | struct nfsd3_createargs *args) |
439 | { | |
072f62ed N |
440 | if (!(p = decode_fh(p, &args->fh)) || |
441 | !(p = decode_filename(p, &args->name, &args->len))) | |
1da177e4 | 442 | return 0; |
072f62ed | 443 | p = decode_sattr3(p, &args->attrs); |
1da177e4 LT |
444 | |
445 | return xdr_argsize_check(rqstp, p); | |
446 | } | |
447 | ||
448 | int | |
91f07168 | 449 | nfs3svc_decode_symlinkargs(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
450 | struct nfsd3_symlinkargs *args) |
451 | { | |
452 | unsigned int len; | |
453 | int avail; | |
454 | char *old, *new; | |
455 | struct kvec *vec; | |
456 | ||
072f62ed N |
457 | if (!(p = decode_fh(p, &args->ffh)) || |
458 | !(p = decode_filename(p, &args->fname, &args->flen)) | |
1da177e4 LT |
459 | ) |
460 | return 0; | |
072f62ed N |
461 | p = decode_sattr3(p, &args->attrs); |
462 | ||
1da177e4 LT |
463 | /* now decode the pathname, which might be larger than the first page. |
464 | * As we have to check for nul's anyway, we copy it into a new page | |
465 | * This page appears in the rq_res.pages list, but as pages_len is always | |
466 | * 0, it won't get in the way | |
467 | */ | |
1da177e4 LT |
468 | len = ntohl(*p++); |
469 | if (len == 0 || len > NFS3_MAXPATHLEN || len >= PAGE_SIZE) | |
470 | return 0; | |
44524359 N |
471 | args->tname = new = |
472 | page_address(rqstp->rq_respages[rqstp->rq_resused++]); | |
1da177e4 LT |
473 | args->tlen = len; |
474 | /* first copy and check from the first page */ | |
475 | old = (char*)p; | |
476 | vec = &rqstp->rq_arg.head[0]; | |
477 | avail = vec->iov_len - (old - (char*)vec->iov_base); | |
478 | while (len && avail && *old) { | |
479 | *new++ = *old++; | |
480 | len--; | |
481 | avail--; | |
482 | } | |
483 | /* now copy next page if there is one */ | |
484 | if (len && !avail && rqstp->rq_arg.page_len) { | |
485 | avail = rqstp->rq_arg.page_len; | |
486 | if (avail > PAGE_SIZE) avail = PAGE_SIZE; | |
487 | old = page_address(rqstp->rq_arg.pages[0]); | |
488 | } | |
489 | while (len && avail && *old) { | |
490 | *new++ = *old++; | |
491 | len--; | |
492 | avail--; | |
493 | } | |
494 | *new = '\0'; | |
495 | if (len) | |
496 | return 0; | |
497 | ||
498 | return 1; | |
499 | } | |
500 | ||
501 | int | |
91f07168 | 502 | nfs3svc_decode_mknodargs(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
503 | struct nfsd3_mknodargs *args) |
504 | { | |
505 | if (!(p = decode_fh(p, &args->fh)) | |
506 | || !(p = decode_filename(p, &args->name, &args->len))) | |
507 | return 0; | |
508 | ||
509 | args->ftype = ntohl(*p++); | |
510 | ||
511 | if (args->ftype == NF3BLK || args->ftype == NF3CHR | |
072f62ed N |
512 | || args->ftype == NF3SOCK || args->ftype == NF3FIFO) |
513 | p = decode_sattr3(p, &args->attrs); | |
1da177e4 LT |
514 | |
515 | if (args->ftype == NF3BLK || args->ftype == NF3CHR) { | |
516 | args->major = ntohl(*p++); | |
517 | args->minor = ntohl(*p++); | |
518 | } | |
519 | ||
520 | return xdr_argsize_check(rqstp, p); | |
521 | } | |
522 | ||
523 | int | |
91f07168 | 524 | nfs3svc_decode_renameargs(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
525 | struct nfsd3_renameargs *args) |
526 | { | |
527 | if (!(p = decode_fh(p, &args->ffh)) | |
528 | || !(p = decode_filename(p, &args->fname, &args->flen)) | |
529 | || !(p = decode_fh(p, &args->tfh)) | |
530 | || !(p = decode_filename(p, &args->tname, &args->tlen))) | |
531 | return 0; | |
532 | ||
533 | return xdr_argsize_check(rqstp, p); | |
534 | } | |
535 | ||
536 | int | |
91f07168 | 537 | nfs3svc_decode_readlinkargs(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
538 | struct nfsd3_readlinkargs *args) |
539 | { | |
540 | if (!(p = decode_fh(p, &args->fh))) | |
541 | return 0; | |
44524359 N |
542 | args->buffer = |
543 | page_address(rqstp->rq_respages[rqstp->rq_resused++]); | |
1da177e4 LT |
544 | |
545 | return xdr_argsize_check(rqstp, p); | |
546 | } | |
547 | ||
548 | int | |
91f07168 | 549 | nfs3svc_decode_linkargs(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
550 | struct nfsd3_linkargs *args) |
551 | { | |
552 | if (!(p = decode_fh(p, &args->ffh)) | |
553 | || !(p = decode_fh(p, &args->tfh)) | |
554 | || !(p = decode_filename(p, &args->tname, &args->tlen))) | |
555 | return 0; | |
556 | ||
557 | return xdr_argsize_check(rqstp, p); | |
558 | } | |
559 | ||
560 | int | |
91f07168 | 561 | nfs3svc_decode_readdirargs(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
562 | struct nfsd3_readdirargs *args) |
563 | { | |
564 | if (!(p = decode_fh(p, &args->fh))) | |
565 | return 0; | |
566 | p = xdr_decode_hyper(p, &args->cookie); | |
567 | args->verf = p; p += 2; | |
568 | args->dircount = ~0; | |
569 | args->count = ntohl(*p++); | |
570 | ||
571 | if (args->count > PAGE_SIZE) | |
572 | args->count = PAGE_SIZE; | |
573 | ||
44524359 N |
574 | args->buffer = |
575 | page_address(rqstp->rq_respages[rqstp->rq_resused++]); | |
1da177e4 LT |
576 | |
577 | return xdr_argsize_check(rqstp, p); | |
578 | } | |
579 | ||
580 | int | |
91f07168 | 581 | nfs3svc_decode_readdirplusargs(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
582 | struct nfsd3_readdirargs *args) |
583 | { | |
584 | int len, pn; | |
7adae489 | 585 | u32 max_blocksize = svc_max_payload(rqstp); |
1da177e4 LT |
586 | |
587 | if (!(p = decode_fh(p, &args->fh))) | |
588 | return 0; | |
589 | p = xdr_decode_hyper(p, &args->cookie); | |
590 | args->verf = p; p += 2; | |
591 | args->dircount = ntohl(*p++); | |
592 | args->count = ntohl(*p++); | |
593 | ||
7adae489 | 594 | len = (args->count > max_blocksize) ? max_blocksize : |
1da177e4 LT |
595 | args->count; |
596 | args->count = len; | |
597 | ||
598 | while (len > 0) { | |
44524359 | 599 | pn = rqstp->rq_resused++; |
1da177e4 LT |
600 | if (!args->buffer) |
601 | args->buffer = page_address(rqstp->rq_respages[pn]); | |
602 | len -= PAGE_SIZE; | |
603 | } | |
604 | ||
605 | return xdr_argsize_check(rqstp, p); | |
606 | } | |
607 | ||
608 | int | |
91f07168 | 609 | nfs3svc_decode_commitargs(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
610 | struct nfsd3_commitargs *args) |
611 | { | |
612 | if (!(p = decode_fh(p, &args->fh))) | |
613 | return 0; | |
614 | p = xdr_decode_hyper(p, &args->offset); | |
615 | args->count = ntohl(*p++); | |
616 | ||
617 | return xdr_argsize_check(rqstp, p); | |
618 | } | |
619 | ||
620 | /* | |
621 | * XDR encode functions | |
622 | */ | |
623 | /* | |
624 | * There must be an encoding function for void results so svc_process | |
625 | * will work properly. | |
626 | */ | |
627 | int | |
91f07168 | 628 | nfs3svc_encode_voidres(struct svc_rqst *rqstp, __be32 *p, void *dummy) |
1da177e4 LT |
629 | { |
630 | return xdr_ressize_check(rqstp, p); | |
631 | } | |
632 | ||
633 | /* GETATTR */ | |
634 | int | |
91f07168 | 635 | nfs3svc_encode_attrstat(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
636 | struct nfsd3_attrstat *resp) |
637 | { | |
40ee5dc6 PS |
638 | if (resp->status == 0) { |
639 | lease_get_mtime(resp->fh.fh_dentry->d_inode, | |
640 | &resp->stat.mtime); | |
a334de28 | 641 | p = encode_fattr3(rqstp, p, &resp->fh, &resp->stat); |
40ee5dc6 | 642 | } |
1da177e4 LT |
643 | return xdr_ressize_check(rqstp, p); |
644 | } | |
645 | ||
646 | /* SETATTR, REMOVE, RMDIR */ | |
647 | int | |
91f07168 | 648 | nfs3svc_encode_wccstat(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
649 | struct nfsd3_attrstat *resp) |
650 | { | |
651 | p = encode_wcc_data(rqstp, p, &resp->fh); | |
652 | return xdr_ressize_check(rqstp, p); | |
653 | } | |
654 | ||
655 | /* LOOKUP */ | |
656 | int | |
91f07168 | 657 | nfs3svc_encode_diropres(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
658 | struct nfsd3_diropres *resp) |
659 | { | |
660 | if (resp->status == 0) { | |
661 | p = encode_fh(p, &resp->fh); | |
662 | p = encode_post_op_attr(rqstp, p, &resp->fh); | |
663 | } | |
664 | p = encode_post_op_attr(rqstp, p, &resp->dirfh); | |
665 | return xdr_ressize_check(rqstp, p); | |
666 | } | |
667 | ||
668 | /* ACCESS */ | |
669 | int | |
91f07168 | 670 | nfs3svc_encode_accessres(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
671 | struct nfsd3_accessres *resp) |
672 | { | |
673 | p = encode_post_op_attr(rqstp, p, &resp->fh); | |
674 | if (resp->status == 0) | |
675 | *p++ = htonl(resp->access); | |
676 | return xdr_ressize_check(rqstp, p); | |
677 | } | |
678 | ||
679 | /* READLINK */ | |
680 | int | |
91f07168 | 681 | nfs3svc_encode_readlinkres(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
682 | struct nfsd3_readlinkres *resp) |
683 | { | |
684 | p = encode_post_op_attr(rqstp, p, &resp->fh); | |
685 | if (resp->status == 0) { | |
686 | *p++ = htonl(resp->len); | |
687 | xdr_ressize_check(rqstp, p); | |
688 | rqstp->rq_res.page_len = resp->len; | |
689 | if (resp->len & 3) { | |
690 | /* need to pad the tail */ | |
1da177e4 LT |
691 | rqstp->rq_res.tail[0].iov_base = p; |
692 | *p = 0; | |
693 | rqstp->rq_res.tail[0].iov_len = 4 - (resp->len&3); | |
694 | } | |
695 | return 1; | |
696 | } else | |
697 | return xdr_ressize_check(rqstp, p); | |
698 | } | |
699 | ||
700 | /* READ */ | |
701 | int | |
91f07168 | 702 | nfs3svc_encode_readres(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
703 | struct nfsd3_readres *resp) |
704 | { | |
705 | p = encode_post_op_attr(rqstp, p, &resp->fh); | |
706 | if (resp->status == 0) { | |
707 | *p++ = htonl(resp->count); | |
708 | *p++ = htonl(resp->eof); | |
709 | *p++ = htonl(resp->count); /* xdr opaque count */ | |
710 | xdr_ressize_check(rqstp, p); | |
711 | /* now update rqstp->rq_res to reflect data aswell */ | |
712 | rqstp->rq_res.page_len = resp->count; | |
713 | if (resp->count & 3) { | |
714 | /* need to pad the tail */ | |
1da177e4 LT |
715 | rqstp->rq_res.tail[0].iov_base = p; |
716 | *p = 0; | |
717 | rqstp->rq_res.tail[0].iov_len = 4 - (resp->count & 3); | |
718 | } | |
719 | return 1; | |
720 | } else | |
721 | return xdr_ressize_check(rqstp, p); | |
722 | } | |
723 | ||
724 | /* WRITE */ | |
725 | int | |
91f07168 | 726 | nfs3svc_encode_writeres(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
727 | struct nfsd3_writeres *resp) |
728 | { | |
729 | p = encode_wcc_data(rqstp, p, &resp->fh); | |
730 | if (resp->status == 0) { | |
731 | *p++ = htonl(resp->count); | |
732 | *p++ = htonl(resp->committed); | |
733 | *p++ = htonl(nfssvc_boot.tv_sec); | |
734 | *p++ = htonl(nfssvc_boot.tv_usec); | |
735 | } | |
736 | return xdr_ressize_check(rqstp, p); | |
737 | } | |
738 | ||
739 | /* CREATE, MKDIR, SYMLINK, MKNOD */ | |
740 | int | |
91f07168 | 741 | nfs3svc_encode_createres(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
742 | struct nfsd3_diropres *resp) |
743 | { | |
744 | if (resp->status == 0) { | |
745 | *p++ = xdr_one; | |
746 | p = encode_fh(p, &resp->fh); | |
747 | p = encode_post_op_attr(rqstp, p, &resp->fh); | |
748 | } | |
749 | p = encode_wcc_data(rqstp, p, &resp->dirfh); | |
750 | return xdr_ressize_check(rqstp, p); | |
751 | } | |
752 | ||
753 | /* RENAME */ | |
754 | int | |
91f07168 | 755 | nfs3svc_encode_renameres(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
756 | struct nfsd3_renameres *resp) |
757 | { | |
758 | p = encode_wcc_data(rqstp, p, &resp->ffh); | |
759 | p = encode_wcc_data(rqstp, p, &resp->tfh); | |
760 | return xdr_ressize_check(rqstp, p); | |
761 | } | |
762 | ||
763 | /* LINK */ | |
764 | int | |
91f07168 | 765 | nfs3svc_encode_linkres(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
766 | struct nfsd3_linkres *resp) |
767 | { | |
768 | p = encode_post_op_attr(rqstp, p, &resp->fh); | |
769 | p = encode_wcc_data(rqstp, p, &resp->tfh); | |
770 | return xdr_ressize_check(rqstp, p); | |
771 | } | |
772 | ||
773 | /* READDIR */ | |
774 | int | |
91f07168 | 775 | nfs3svc_encode_readdirres(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
776 | struct nfsd3_readdirres *resp) |
777 | { | |
778 | p = encode_post_op_attr(rqstp, p, &resp->fh); | |
779 | ||
780 | if (resp->status == 0) { | |
781 | /* stupid readdir cookie */ | |
782 | memcpy(p, resp->verf, 8); p += 2; | |
783 | xdr_ressize_check(rqstp, p); | |
784 | if (rqstp->rq_res.head[0].iov_len + (2<<2) > PAGE_SIZE) | |
785 | return 1; /*No room for trailer */ | |
786 | rqstp->rq_res.page_len = (resp->count) << 2; | |
787 | ||
788 | /* add the 'tail' to the end of the 'head' page - page 0. */ | |
1da177e4 LT |
789 | rqstp->rq_res.tail[0].iov_base = p; |
790 | *p++ = 0; /* no more entries */ | |
791 | *p++ = htonl(resp->common.err == nfserr_eof); | |
792 | rqstp->rq_res.tail[0].iov_len = 2<<2; | |
793 | return 1; | |
794 | } else | |
795 | return xdr_ressize_check(rqstp, p); | |
796 | } | |
797 | ||
3ee6f61c | 798 | static __be32 * |
91f07168 | 799 | encode_entry_baggage(struct nfsd3_readdirres *cd, __be32 *p, const char *name, |
40ee5dc6 | 800 | int namlen, u64 ino) |
1da177e4 LT |
801 | { |
802 | *p++ = xdr_one; /* mark entry present */ | |
803 | p = xdr_encode_hyper(p, ino); /* file id */ | |
804 | p = xdr_encode_array(p, name, namlen);/* name length & name */ | |
805 | ||
806 | cd->offset = p; /* remember pointer */ | |
807 | p = xdr_encode_hyper(p, NFS_OFFSET_MAX);/* offset of next entry */ | |
808 | ||
809 | return p; | |
810 | } | |
811 | ||
3ee6f61c | 812 | static __be32 * |
91f07168 | 813 | encode_entryplus_baggage(struct nfsd3_readdirres *cd, __be32 *p, |
1da177e4 LT |
814 | struct svc_fh *fhp) |
815 | { | |
816 | p = encode_post_op_attr(cd->rqstp, p, fhp); | |
817 | *p++ = xdr_one; /* yes, a file handle follows */ | |
818 | p = encode_fh(p, fhp); | |
819 | fh_put(fhp); | |
820 | return p; | |
821 | } | |
822 | ||
823 | static int | |
824 | compose_entry_fh(struct nfsd3_readdirres *cd, struct svc_fh *fhp, | |
825 | const char *name, int namlen) | |
826 | { | |
827 | struct svc_export *exp; | |
828 | struct dentry *dparent, *dchild; | |
829 | int rv = 0; | |
830 | ||
831 | dparent = cd->fh.fh_dentry; | |
832 | exp = cd->fh.fh_export; | |
833 | ||
834 | fh_init(fhp, NFS3_FHSIZE); | |
835 | if (isdotent(name, namlen)) { | |
836 | if (namlen == 2) { | |
837 | dchild = dget_parent(dparent); | |
838 | if (dchild == dparent) { | |
839 | /* filesystem root - cannot return filehandle for ".." */ | |
840 | dput(dchild); | |
841 | return 1; | |
842 | } | |
843 | } else | |
844 | dchild = dget(dparent); | |
845 | } else | |
846 | dchild = lookup_one_len(name, dparent, namlen); | |
847 | if (IS_ERR(dchild)) | |
848 | return 1; | |
849 | if (d_mountpoint(dchild) || | |
850 | fh_compose(fhp, exp, dchild, &cd->fh) != 0 || | |
851 | !dchild->d_inode) | |
852 | rv = 1; | |
853 | dput(dchild); | |
854 | return rv; | |
855 | } | |
856 | ||
857 | /* | |
858 | * Encode a directory entry. This one works for both normal readdir | |
859 | * and readdirplus. | |
860 | * The normal readdir reply requires 2 (fileid) + 1 (stringlen) | |
861 | * + string + 2 (cookie) + 1 (next) words, i.e. 6 + strlen. | |
862 | * | |
863 | * The readdirplus baggage is 1+21 words for post_op_attr, plus the | |
864 | * file handle. | |
865 | */ | |
866 | ||
867 | #define NFS3_ENTRY_BAGGAGE (2 + 1 + 2 + 1) | |
868 | #define NFS3_ENTRYPLUS_BAGGAGE (1 + 21 + 1 + (NFS3_FHSIZE >> 2)) | |
869 | static int | |
598b9a56 | 870 | encode_entry(struct readdir_cd *ccd, const char *name, int namlen, |
40ee5dc6 | 871 | loff_t offset, u64 ino, unsigned int d_type, int plus) |
1da177e4 LT |
872 | { |
873 | struct nfsd3_readdirres *cd = container_of(ccd, struct nfsd3_readdirres, | |
874 | common); | |
91f07168 | 875 | __be32 *p = cd->buffer; |
1da177e4 LT |
876 | caddr_t curr_page_addr = NULL; |
877 | int pn; /* current page number */ | |
878 | int slen; /* string (name) length */ | |
879 | int elen; /* estimated entry length in words */ | |
880 | int num_entry_words = 0; /* actual number of words */ | |
881 | ||
882 | if (cd->offset) { | |
883 | u64 offset64 = offset; | |
884 | ||
885 | if (unlikely(cd->offset1)) { | |
886 | /* we ended up with offset on a page boundary */ | |
887 | *cd->offset = htonl(offset64 >> 32); | |
888 | *cd->offset1 = htonl(offset64 & 0xffffffff); | |
889 | cd->offset1 = NULL; | |
890 | } else { | |
598b9a56 | 891 | xdr_encode_hyper(cd->offset, offset64); |
1da177e4 LT |
892 | } |
893 | } | |
894 | ||
895 | /* | |
896 | dprintk("encode_entry(%.*s @%ld%s)\n", | |
897 | namlen, name, (long) offset, plus? " plus" : ""); | |
898 | */ | |
899 | ||
900 | /* truncate filename if too long */ | |
901 | if (namlen > NFS3_MAXNAMLEN) | |
902 | namlen = NFS3_MAXNAMLEN; | |
903 | ||
904 | slen = XDR_QUADLEN(namlen); | |
905 | elen = slen + NFS3_ENTRY_BAGGAGE | |
906 | + (plus? NFS3_ENTRYPLUS_BAGGAGE : 0); | |
907 | ||
908 | if (cd->buflen < elen) { | |
909 | cd->common.err = nfserr_toosmall; | |
910 | return -EINVAL; | |
911 | } | |
912 | ||
913 | /* determine which page in rq_respages[] we are currently filling */ | |
914 | for (pn=1; pn < cd->rqstp->rq_resused; pn++) { | |
915 | curr_page_addr = page_address(cd->rqstp->rq_respages[pn]); | |
916 | ||
917 | if (((caddr_t)cd->buffer >= curr_page_addr) && | |
918 | ((caddr_t)cd->buffer < curr_page_addr + PAGE_SIZE)) | |
919 | break; | |
920 | } | |
921 | ||
922 | if ((caddr_t)(cd->buffer + elen) < (curr_page_addr + PAGE_SIZE)) { | |
923 | /* encode entry in current page */ | |
924 | ||
925 | p = encode_entry_baggage(cd, p, name, namlen, ino); | |
926 | ||
927 | /* throw in readdirplus baggage */ | |
928 | if (plus) { | |
929 | struct svc_fh fh; | |
930 | ||
931 | if (compose_entry_fh(cd, &fh, name, namlen) > 0) { | |
932 | *p++ = 0; | |
933 | *p++ = 0; | |
934 | } else | |
935 | p = encode_entryplus_baggage(cd, p, &fh); | |
936 | } | |
937 | num_entry_words = p - cd->buffer; | |
938 | } else if (cd->rqstp->rq_respages[pn+1] != NULL) { | |
939 | /* temporarily encode entry into next page, then move back to | |
940 | * current and next page in rq_respages[] */ | |
91f07168 | 941 | __be32 *p1, *tmp; |
1da177e4 LT |
942 | int len1, len2; |
943 | ||
944 | /* grab next page for temporary storage of entry */ | |
945 | p1 = tmp = page_address(cd->rqstp->rq_respages[pn+1]); | |
946 | ||
947 | p1 = encode_entry_baggage(cd, p1, name, namlen, ino); | |
948 | ||
949 | /* throw in readdirplus baggage */ | |
950 | if (plus) { | |
951 | struct svc_fh fh; | |
952 | ||
953 | if (compose_entry_fh(cd, &fh, name, namlen) > 0) { | |
954 | /* zero out the filehandle */ | |
955 | *p1++ = 0; | |
956 | *p1++ = 0; | |
957 | } else | |
958 | p1 = encode_entryplus_baggage(cd, p1, &fh); | |
959 | } | |
960 | ||
961 | /* determine entry word length and lengths to go in pages */ | |
962 | num_entry_words = p1 - tmp; | |
963 | len1 = curr_page_addr + PAGE_SIZE - (caddr_t)cd->buffer; | |
964 | if ((num_entry_words << 2) < len1) { | |
965 | /* the actual number of words in the entry is less | |
966 | * than elen and can still fit in the current page | |
967 | */ | |
968 | memmove(p, tmp, num_entry_words << 2); | |
969 | p += num_entry_words; | |
970 | ||
971 | /* update offset */ | |
972 | cd->offset = cd->buffer + (cd->offset - tmp); | |
973 | } else { | |
974 | unsigned int offset_r = (cd->offset - tmp) << 2; | |
975 | ||
976 | /* update pointer to offset location. | |
977 | * This is a 64bit quantity, so we need to | |
978 | * deal with 3 cases: | |
979 | * - entirely in first page | |
980 | * - entirely in second page | |
981 | * - 4 bytes in each page | |
982 | */ | |
983 | if (offset_r + 8 <= len1) { | |
984 | cd->offset = p + (cd->offset - tmp); | |
985 | } else if (offset_r >= len1) { | |
986 | cd->offset -= len1 >> 2; | |
987 | } else { | |
988 | /* sitting on the fence */ | |
989 | BUG_ON(offset_r != len1 - 4); | |
990 | cd->offset = p + (cd->offset - tmp); | |
991 | cd->offset1 = tmp; | |
992 | } | |
993 | ||
994 | len2 = (num_entry_words << 2) - len1; | |
995 | ||
996 | /* move from temp page to current and next pages */ | |
997 | memmove(p, tmp, len1); | |
998 | memmove(tmp, (caddr_t)tmp+len1, len2); | |
999 | ||
1000 | p = tmp + (len2 >> 2); | |
1001 | } | |
1002 | } | |
1003 | else { | |
1004 | cd->common.err = nfserr_toosmall; | |
1005 | return -EINVAL; | |
1006 | } | |
1007 | ||
1008 | cd->buflen -= num_entry_words; | |
1009 | cd->buffer = p; | |
1010 | cd->common.err = nfs_ok; | |
1011 | return 0; | |
1012 | ||
1013 | } | |
1014 | ||
1015 | int | |
a0ad13ef N |
1016 | nfs3svc_encode_entry(void *cd, const char *name, |
1017 | int namlen, loff_t offset, u64 ino, unsigned int d_type) | |
1da177e4 LT |
1018 | { |
1019 | return encode_entry(cd, name, namlen, offset, ino, d_type, 0); | |
1020 | } | |
1021 | ||
1022 | int | |
a0ad13ef N |
1023 | nfs3svc_encode_entry_plus(void *cd, const char *name, |
1024 | int namlen, loff_t offset, u64 ino, | |
1025 | unsigned int d_type) | |
1da177e4 LT |
1026 | { |
1027 | return encode_entry(cd, name, namlen, offset, ino, d_type, 1); | |
1028 | } | |
1029 | ||
1030 | /* FSSTAT */ | |
1031 | int | |
91f07168 | 1032 | nfs3svc_encode_fsstatres(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
1033 | struct nfsd3_fsstatres *resp) |
1034 | { | |
1035 | struct kstatfs *s = &resp->stats; | |
1036 | u64 bs = s->f_bsize; | |
1037 | ||
1038 | *p++ = xdr_zero; /* no post_op_attr */ | |
1039 | ||
1040 | if (resp->status == 0) { | |
1041 | p = xdr_encode_hyper(p, bs * s->f_blocks); /* total bytes */ | |
1042 | p = xdr_encode_hyper(p, bs * s->f_bfree); /* free bytes */ | |
1043 | p = xdr_encode_hyper(p, bs * s->f_bavail); /* user available bytes */ | |
1044 | p = xdr_encode_hyper(p, s->f_files); /* total inodes */ | |
1045 | p = xdr_encode_hyper(p, s->f_ffree); /* free inodes */ | |
1046 | p = xdr_encode_hyper(p, s->f_ffree); /* user available inodes */ | |
1047 | *p++ = htonl(resp->invarsec); /* mean unchanged time */ | |
1048 | } | |
1049 | return xdr_ressize_check(rqstp, p); | |
1050 | } | |
1051 | ||
1052 | /* FSINFO */ | |
1053 | int | |
91f07168 | 1054 | nfs3svc_encode_fsinfores(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
1055 | struct nfsd3_fsinfores *resp) |
1056 | { | |
1057 | *p++ = xdr_zero; /* no post_op_attr */ | |
1058 | ||
1059 | if (resp->status == 0) { | |
1060 | *p++ = htonl(resp->f_rtmax); | |
1061 | *p++ = htonl(resp->f_rtpref); | |
1062 | *p++ = htonl(resp->f_rtmult); | |
1063 | *p++ = htonl(resp->f_wtmax); | |
1064 | *p++ = htonl(resp->f_wtpref); | |
1065 | *p++ = htonl(resp->f_wtmult); | |
1066 | *p++ = htonl(resp->f_dtpref); | |
1067 | p = xdr_encode_hyper(p, resp->f_maxfilesize); | |
1068 | *p++ = xdr_one; | |
1069 | *p++ = xdr_zero; | |
1070 | *p++ = htonl(resp->f_properties); | |
1071 | } | |
1072 | ||
1073 | return xdr_ressize_check(rqstp, p); | |
1074 | } | |
1075 | ||
1076 | /* PATHCONF */ | |
1077 | int | |
91f07168 | 1078 | nfs3svc_encode_pathconfres(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
1079 | struct nfsd3_pathconfres *resp) |
1080 | { | |
1081 | *p++ = xdr_zero; /* no post_op_attr */ | |
1082 | ||
1083 | if (resp->status == 0) { | |
1084 | *p++ = htonl(resp->p_link_max); | |
1085 | *p++ = htonl(resp->p_name_max); | |
1086 | *p++ = htonl(resp->p_no_trunc); | |
1087 | *p++ = htonl(resp->p_chown_restricted); | |
1088 | *p++ = htonl(resp->p_case_insensitive); | |
1089 | *p++ = htonl(resp->p_case_preserving); | |
1090 | } | |
1091 | ||
1092 | return xdr_ressize_check(rqstp, p); | |
1093 | } | |
1094 | ||
1095 | /* COMMIT */ | |
1096 | int | |
91f07168 | 1097 | nfs3svc_encode_commitres(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
1098 | struct nfsd3_commitres *resp) |
1099 | { | |
1100 | p = encode_wcc_data(rqstp, p, &resp->fh); | |
1101 | /* Write verifier */ | |
1102 | if (resp->status == 0) { | |
1103 | *p++ = htonl(nfssvc_boot.tv_sec); | |
1104 | *p++ = htonl(nfssvc_boot.tv_usec); | |
1105 | } | |
1106 | return xdr_ressize_check(rqstp, p); | |
1107 | } | |
1108 | ||
1109 | /* | |
1110 | * XDR release functions | |
1111 | */ | |
1112 | int | |
91f07168 | 1113 | nfs3svc_release_fhandle(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
1114 | struct nfsd3_attrstat *resp) |
1115 | { | |
1116 | fh_put(&resp->fh); | |
1117 | return 1; | |
1118 | } | |
1119 | ||
1120 | int | |
91f07168 | 1121 | nfs3svc_release_fhandle2(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
1122 | struct nfsd3_fhandle_pair *resp) |
1123 | { | |
1124 | fh_put(&resp->fh1); | |
1125 | fh_put(&resp->fh2); | |
1126 | return 1; | |
1127 | } |