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Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * linux/fs/nfs/nfs3xdr.c | |
3 | * | |
4 | * XDR functions to encode/decode NFSv3 RPC arguments and results. | |
5 | * | |
6 | * Copyright (C) 1996, 1997 Olaf Kirch | |
7 | */ | |
8 | ||
9 | #include <linux/param.h> | |
10 | #include <linux/time.h> | |
11 | #include <linux/mm.h> | |
1da177e4 LT |
12 | #include <linux/errno.h> |
13 | #include <linux/string.h> | |
14 | #include <linux/in.h> | |
15 | #include <linux/pagemap.h> | |
16 | #include <linux/proc_fs.h> | |
17 | #include <linux/kdev_t.h> | |
18 | #include <linux/sunrpc/clnt.h> | |
19 | #include <linux/nfs.h> | |
20 | #include <linux/nfs3.h> | |
21 | #include <linux/nfs_fs.h> | |
b7fa0554 | 22 | #include <linux/nfsacl.h> |
f7b422b1 | 23 | #include "internal.h" |
1da177e4 LT |
24 | |
25 | #define NFSDBG_FACILITY NFSDBG_XDR | |
26 | ||
27 | /* Mapping from NFS error code to "errno" error code. */ | |
28 | #define errno_NFSERR_IO EIO | |
29 | ||
1da177e4 LT |
30 | /* |
31 | * Declare the space requirements for NFS arguments and replies as | |
32 | * number of 32bit-words | |
33 | */ | |
34 | #define NFS3_fhandle_sz (1+16) | |
35 | #define NFS3_fh_sz (NFS3_fhandle_sz) /* shorthand */ | |
36 | #define NFS3_sattr_sz (15) | |
37 | #define NFS3_filename_sz (1+(NFS3_MAXNAMLEN>>2)) | |
38 | #define NFS3_path_sz (1+(NFS3_MAXPATHLEN>>2)) | |
39 | #define NFS3_fattr_sz (21) | |
d9c407b1 | 40 | #define NFS3_cookieverf_sz (NFS3_COOKIEVERFSIZE>>2) |
1da177e4 LT |
41 | #define NFS3_wcc_attr_sz (6) |
42 | #define NFS3_pre_op_attr_sz (1+NFS3_wcc_attr_sz) | |
43 | #define NFS3_post_op_attr_sz (1+NFS3_fattr_sz) | |
44 | #define NFS3_wcc_data_sz (NFS3_pre_op_attr_sz+NFS3_post_op_attr_sz) | |
45 | #define NFS3_fsstat_sz | |
46 | #define NFS3_fsinfo_sz | |
47 | #define NFS3_pathconf_sz | |
48 | #define NFS3_entry_sz (NFS3_filename_sz+3) | |
1da177e4 | 49 | #define NFS3_diropargs_sz (NFS3_fh_sz+NFS3_filename_sz) |
ad96b5b5 CL |
50 | |
51 | #define NFS3_getattrargs_sz (NFS3_fh_sz) | |
52 | #define NFS3_setattrargs_sz (NFS3_fh_sz+NFS3_sattr_sz+3) | |
53 | #define NFS3_lookupargs_sz (NFS3_fh_sz+NFS3_filename_sz) | |
1da177e4 LT |
54 | #define NFS3_accessargs_sz (NFS3_fh_sz+1) |
55 | #define NFS3_readlinkargs_sz (NFS3_fh_sz) | |
56 | #define NFS3_readargs_sz (NFS3_fh_sz+3) | |
57 | #define NFS3_writeargs_sz (NFS3_fh_sz+5) | |
58 | #define NFS3_createargs_sz (NFS3_diropargs_sz+NFS3_sattr_sz) | |
59 | #define NFS3_mkdirargs_sz (NFS3_diropargs_sz+NFS3_sattr_sz) | |
94a6d753 | 60 | #define NFS3_symlinkargs_sz (NFS3_diropargs_sz+1+NFS3_sattr_sz) |
1da177e4 | 61 | #define NFS3_mknodargs_sz (NFS3_diropargs_sz+2+NFS3_sattr_sz) |
ad96b5b5 | 62 | #define NFS3_removeargs_sz (NFS3_fh_sz+NFS3_filename_sz) |
1da177e4 LT |
63 | #define NFS3_renameargs_sz (NFS3_diropargs_sz+NFS3_diropargs_sz) |
64 | #define NFS3_linkargs_sz (NFS3_fh_sz+NFS3_diropargs_sz) | |
d9c407b1 CL |
65 | #define NFS3_readdirargs_sz (NFS3_fh_sz+NFS3_cookieverf_sz+3) |
66 | #define NFS3_readdirplusargs_sz (NFS3_fh_sz+NFS3_cookieverf_sz+4) | |
1da177e4 LT |
67 | #define NFS3_commitargs_sz (NFS3_fh_sz+3) |
68 | ||
69 | #define NFS3_attrstat_sz (1+NFS3_fattr_sz) | |
70 | #define NFS3_wccstat_sz (1+NFS3_wcc_data_sz) | |
4fdc17b2 | 71 | #define NFS3_removeres_sz (NFS3_wccstat_sz) |
1da177e4 LT |
72 | #define NFS3_lookupres_sz (1+NFS3_fh_sz+(2 * NFS3_post_op_attr_sz)) |
73 | #define NFS3_accessres_sz (1+NFS3_post_op_attr_sz+1) | |
74 | #define NFS3_readlinkres_sz (1+NFS3_post_op_attr_sz+1) | |
75 | #define NFS3_readres_sz (1+NFS3_post_op_attr_sz+3) | |
76 | #define NFS3_writeres_sz (1+NFS3_wcc_data_sz+4) | |
77 | #define NFS3_createres_sz (1+NFS3_fh_sz+NFS3_post_op_attr_sz+NFS3_wcc_data_sz) | |
78 | #define NFS3_renameres_sz (1+(2 * NFS3_wcc_data_sz)) | |
79 | #define NFS3_linkres_sz (1+NFS3_post_op_attr_sz+NFS3_wcc_data_sz) | |
80 | #define NFS3_readdirres_sz (1+NFS3_post_op_attr_sz+2) | |
81 | #define NFS3_fsstatres_sz (1+NFS3_post_op_attr_sz+13) | |
82 | #define NFS3_fsinfores_sz (1+NFS3_post_op_attr_sz+12) | |
83 | #define NFS3_pathconfres_sz (1+NFS3_post_op_attr_sz+6) | |
84 | #define NFS3_commitres_sz (1+NFS3_wcc_data_sz+2) | |
85 | ||
b7fa0554 | 86 | #define ACL3_getaclargs_sz (NFS3_fh_sz+1) |
ae46141f TM |
87 | #define ACL3_setaclargs_sz (NFS3_fh_sz+1+ \ |
88 | XDR_QUADLEN(NFS_ACL_INLINE_BUFSIZE)) | |
89 | #define ACL3_getaclres_sz (1+NFS3_post_op_attr_sz+1+ \ | |
90 | XDR_QUADLEN(NFS_ACL_INLINE_BUFSIZE)) | |
b7fa0554 AG |
91 | #define ACL3_setaclres_sz (1+NFS3_post_op_attr_sz) |
92 | ||
1da177e4 LT |
93 | /* |
94 | * Map file type to S_IFMT bits | |
95 | */ | |
bca79478 TM |
96 | static const umode_t nfs_type2fmt[] = { |
97 | [NF3BAD] = 0, | |
98 | [NF3REG] = S_IFREG, | |
99 | [NF3DIR] = S_IFDIR, | |
100 | [NF3BLK] = S_IFBLK, | |
101 | [NF3CHR] = S_IFCHR, | |
102 | [NF3LNK] = S_IFLNK, | |
103 | [NF3SOCK] = S_IFSOCK, | |
104 | [NF3FIFO] = S_IFIFO, | |
1da177e4 LT |
105 | }; |
106 | ||
babddc72 BS |
107 | static void print_overflow_msg(const char *func, const struct xdr_stream *xdr) |
108 | { | |
109 | dprintk("nfs: %s: prematurely hit end of receive buffer. " | |
110 | "Remaining buffer length is %tu words.\n", | |
111 | func, xdr->end - xdr->p); | |
112 | } | |
113 | ||
d9c407b1 CL |
114 | /* |
115 | * While encoding arguments, set up the reply buffer in advance to | |
116 | * receive reply data directly into the page cache. | |
117 | */ | |
118 | static void prepare_reply_buffer(struct rpc_rqst *req, struct page **pages, | |
119 | unsigned int base, unsigned int len, | |
120 | unsigned int bufsize) | |
121 | { | |
122 | struct rpc_auth *auth = req->rq_cred->cr_auth; | |
123 | unsigned int replen; | |
124 | ||
125 | replen = RPC_REPHDRSIZE + auth->au_rslack + bufsize; | |
126 | xdr_inline_pages(&req->rq_rcv_buf, replen << 2, pages, base, len); | |
127 | } | |
128 | ||
129 | ||
1da177e4 LT |
130 | /* |
131 | * Common NFS XDR functions as inlines | |
132 | */ | |
d61005a6 | 133 | static inline __be32 * |
4fdc17b2 | 134 | xdr_encode_fhandle(__be32 *p, const struct nfs_fh *fh) |
1da177e4 LT |
135 | { |
136 | return xdr_encode_array(p, fh->data, fh->size); | |
137 | } | |
138 | ||
d61005a6 AV |
139 | static inline __be32 * |
140 | xdr_decode_fhandle(__be32 *p, struct nfs_fh *fh) | |
1da177e4 LT |
141 | { |
142 | if ((fh->size = ntohl(*p++)) <= NFS3_FHSIZE) { | |
143 | memcpy(fh->data, p, fh->size); | |
144 | return p + XDR_QUADLEN(fh->size); | |
145 | } | |
146 | return NULL; | |
147 | } | |
148 | ||
babddc72 BS |
149 | static inline __be32 * |
150 | xdr_decode_fhandle_stream(struct xdr_stream *xdr, struct nfs_fh *fh) | |
151 | { | |
152 | __be32 *p; | |
153 | p = xdr_inline_decode(xdr, 4); | |
154 | if (unlikely(!p)) | |
155 | goto out_overflow; | |
156 | fh->size = ntohl(*p++); | |
157 | ||
158 | if (fh->size <= NFS3_FHSIZE) { | |
159 | p = xdr_inline_decode(xdr, fh->size); | |
160 | if (unlikely(!p)) | |
161 | goto out_overflow; | |
162 | memcpy(fh->data, p, fh->size); | |
163 | return p + XDR_QUADLEN(fh->size); | |
164 | } | |
165 | return NULL; | |
166 | ||
167 | out_overflow: | |
168 | print_overflow_msg(__func__, xdr); | |
169 | return ERR_PTR(-EIO); | |
170 | } | |
171 | ||
1da177e4 LT |
172 | /* |
173 | * Encode/decode time. | |
174 | */ | |
d61005a6 | 175 | static inline __be32 * |
d9c407b1 | 176 | xdr_encode_time3(__be32 *p, const struct timespec *timep) |
1da177e4 LT |
177 | { |
178 | *p++ = htonl(timep->tv_sec); | |
179 | *p++ = htonl(timep->tv_nsec); | |
180 | return p; | |
181 | } | |
182 | ||
d61005a6 AV |
183 | static inline __be32 * |
184 | xdr_decode_time3(__be32 *p, struct timespec *timep) | |
1da177e4 LT |
185 | { |
186 | timep->tv_sec = ntohl(*p++); | |
187 | timep->tv_nsec = ntohl(*p++); | |
188 | return p; | |
189 | } | |
190 | ||
d61005a6 AV |
191 | static __be32 * |
192 | xdr_decode_fattr(__be32 *p, struct nfs_fattr *fattr) | |
1da177e4 LT |
193 | { |
194 | unsigned int type, major, minor; | |
bca79478 | 195 | umode_t fmode; |
1da177e4 LT |
196 | |
197 | type = ntohl(*p++); | |
bca79478 TM |
198 | if (type > NF3FIFO) |
199 | type = NF3NON; | |
200 | fmode = nfs_type2fmt[type]; | |
1da177e4 LT |
201 | fattr->mode = (ntohl(*p++) & ~S_IFMT) | fmode; |
202 | fattr->nlink = ntohl(*p++); | |
203 | fattr->uid = ntohl(*p++); | |
204 | fattr->gid = ntohl(*p++); | |
205 | p = xdr_decode_hyper(p, &fattr->size); | |
206 | p = xdr_decode_hyper(p, &fattr->du.nfs3.used); | |
207 | ||
208 | /* Turn remote device info into Linux-specific dev_t */ | |
209 | major = ntohl(*p++); | |
210 | minor = ntohl(*p++); | |
211 | fattr->rdev = MKDEV(major, minor); | |
212 | if (MAJOR(fattr->rdev) != major || MINOR(fattr->rdev) != minor) | |
213 | fattr->rdev = 0; | |
214 | ||
8b4bdcf8 TM |
215 | p = xdr_decode_hyper(p, &fattr->fsid.major); |
216 | fattr->fsid.minor = 0; | |
1da177e4 LT |
217 | p = xdr_decode_hyper(p, &fattr->fileid); |
218 | p = xdr_decode_time3(p, &fattr->atime); | |
219 | p = xdr_decode_time3(p, &fattr->mtime); | |
220 | p = xdr_decode_time3(p, &fattr->ctime); | |
221 | ||
222 | /* Update the mode bits */ | |
9e6e70f8 | 223 | fattr->valid |= NFS_ATTR_FATTR_V3; |
1da177e4 LT |
224 | return p; |
225 | } | |
226 | ||
d61005a6 | 227 | static inline __be32 * |
d9c407b1 | 228 | xdr_encode_sattr(__be32 *p, const struct iattr *attr) |
1da177e4 LT |
229 | { |
230 | if (attr->ia_valid & ATTR_MODE) { | |
231 | *p++ = xdr_one; | |
cf3fff54 | 232 | *p++ = htonl(attr->ia_mode & S_IALLUGO); |
1da177e4 LT |
233 | } else { |
234 | *p++ = xdr_zero; | |
235 | } | |
236 | if (attr->ia_valid & ATTR_UID) { | |
237 | *p++ = xdr_one; | |
238 | *p++ = htonl(attr->ia_uid); | |
239 | } else { | |
240 | *p++ = xdr_zero; | |
241 | } | |
242 | if (attr->ia_valid & ATTR_GID) { | |
243 | *p++ = xdr_one; | |
244 | *p++ = htonl(attr->ia_gid); | |
245 | } else { | |
246 | *p++ = xdr_zero; | |
247 | } | |
248 | if (attr->ia_valid & ATTR_SIZE) { | |
249 | *p++ = xdr_one; | |
250 | p = xdr_encode_hyper(p, (__u64) attr->ia_size); | |
251 | } else { | |
252 | *p++ = xdr_zero; | |
253 | } | |
254 | if (attr->ia_valid & ATTR_ATIME_SET) { | |
255 | *p++ = xdr_two; | |
256 | p = xdr_encode_time3(p, &attr->ia_atime); | |
257 | } else if (attr->ia_valid & ATTR_ATIME) { | |
258 | *p++ = xdr_one; | |
259 | } else { | |
260 | *p++ = xdr_zero; | |
261 | } | |
262 | if (attr->ia_valid & ATTR_MTIME_SET) { | |
263 | *p++ = xdr_two; | |
264 | p = xdr_encode_time3(p, &attr->ia_mtime); | |
265 | } else if (attr->ia_valid & ATTR_MTIME) { | |
266 | *p++ = xdr_one; | |
267 | } else { | |
268 | *p++ = xdr_zero; | |
269 | } | |
270 | return p; | |
271 | } | |
272 | ||
d61005a6 AV |
273 | static inline __be32 * |
274 | xdr_decode_wcc_attr(__be32 *p, struct nfs_fattr *fattr) | |
1da177e4 LT |
275 | { |
276 | p = xdr_decode_hyper(p, &fattr->pre_size); | |
277 | p = xdr_decode_time3(p, &fattr->pre_mtime); | |
278 | p = xdr_decode_time3(p, &fattr->pre_ctime); | |
9e6e70f8 TM |
279 | fattr->valid |= NFS_ATTR_FATTR_PRESIZE |
280 | | NFS_ATTR_FATTR_PREMTIME | |
281 | | NFS_ATTR_FATTR_PRECTIME; | |
1da177e4 LT |
282 | return p; |
283 | } | |
284 | ||
d61005a6 AV |
285 | static inline __be32 * |
286 | xdr_decode_post_op_attr(__be32 *p, struct nfs_fattr *fattr) | |
1da177e4 LT |
287 | { |
288 | if (*p++) | |
289 | p = xdr_decode_fattr(p, fattr); | |
290 | return p; | |
291 | } | |
292 | ||
babddc72 BS |
293 | static inline __be32 * |
294 | xdr_decode_post_op_attr_stream(struct xdr_stream *xdr, struct nfs_fattr *fattr) | |
295 | { | |
296 | __be32 *p; | |
297 | ||
298 | p = xdr_inline_decode(xdr, 4); | |
299 | if (unlikely(!p)) | |
300 | goto out_overflow; | |
301 | if (ntohl(*p++)) { | |
302 | p = xdr_inline_decode(xdr, 84); | |
303 | if (unlikely(!p)) | |
304 | goto out_overflow; | |
305 | p = xdr_decode_fattr(p, fattr); | |
306 | } | |
307 | return p; | |
308 | out_overflow: | |
309 | print_overflow_msg(__func__, xdr); | |
310 | return ERR_PTR(-EIO); | |
311 | } | |
312 | ||
d61005a6 AV |
313 | static inline __be32 * |
314 | xdr_decode_pre_op_attr(__be32 *p, struct nfs_fattr *fattr) | |
1da177e4 LT |
315 | { |
316 | if (*p++) | |
317 | return xdr_decode_wcc_attr(p, fattr); | |
318 | return p; | |
319 | } | |
320 | ||
321 | ||
d61005a6 AV |
322 | static inline __be32 * |
323 | xdr_decode_wcc_data(__be32 *p, struct nfs_fattr *fattr) | |
1da177e4 LT |
324 | { |
325 | p = xdr_decode_pre_op_attr(p, fattr); | |
326 | return xdr_decode_post_op_attr(p, fattr); | |
327 | } | |
328 | ||
d9c407b1 CL |
329 | |
330 | /* | |
331 | * Encode/decode NFSv3 basic data types | |
332 | * | |
333 | * Basic NFSv3 data types are defined in section 2.5 of RFC 1813: | |
334 | * "NFS Version 3 Protocol Specification". | |
335 | * | |
336 | * Not all basic data types have their own encoding and decoding | |
337 | * functions. For run-time efficiency, some data types are encoded | |
338 | * or decoded inline. | |
339 | */ | |
340 | ||
341 | static void encode_uint32(struct xdr_stream *xdr, u32 value) | |
342 | { | |
343 | __be32 *p = xdr_reserve_space(xdr, 4); | |
344 | *p = cpu_to_be32(value); | |
345 | } | |
346 | ||
347 | /* | |
348 | * filename3 | |
349 | * | |
350 | * typedef string filename3<>; | |
351 | */ | |
352 | static void encode_filename3(struct xdr_stream *xdr, | |
353 | const char *name, u32 length) | |
354 | { | |
355 | __be32 *p; | |
356 | ||
357 | BUG_ON(length > NFS3_MAXNAMLEN); | |
358 | p = xdr_reserve_space(xdr, 4 + length); | |
359 | xdr_encode_opaque(p, name, length); | |
360 | } | |
361 | ||
362 | /* | |
363 | * nfspath3 | |
364 | * | |
365 | * typedef string nfspath3<>; | |
366 | */ | |
367 | static void encode_nfspath3(struct xdr_stream *xdr, struct page **pages, | |
368 | const u32 length) | |
369 | { | |
370 | BUG_ON(length > NFS3_MAXPATHLEN); | |
371 | encode_uint32(xdr, length); | |
372 | xdr_write_pages(xdr, pages, 0, length); | |
373 | } | |
374 | ||
375 | /* | |
376 | * cookie3 | |
377 | * | |
378 | * typedef uint64 cookie3 | |
379 | */ | |
380 | static __be32 *xdr_encode_cookie3(__be32 *p, u64 cookie) | |
381 | { | |
382 | return xdr_encode_hyper(p, cookie); | |
383 | } | |
384 | ||
385 | /* | |
386 | * cookieverf3 | |
387 | * | |
388 | * typedef opaque cookieverf3[NFS3_COOKIEVERFSIZE]; | |
389 | */ | |
390 | static __be32 *xdr_encode_cookieverf3(__be32 *p, const __be32 *verifier) | |
391 | { | |
392 | memcpy(p, verifier, NFS3_COOKIEVERFSIZE); | |
393 | return p + XDR_QUADLEN(NFS3_COOKIEVERFSIZE); | |
394 | } | |
395 | ||
396 | /* | |
397 | * createverf3 | |
398 | * | |
399 | * typedef opaque createverf3[NFS3_CREATEVERFSIZE]; | |
400 | */ | |
401 | static void encode_createverf3(struct xdr_stream *xdr, const __be32 *verifier) | |
402 | { | |
403 | __be32 *p; | |
404 | ||
405 | p = xdr_reserve_space(xdr, NFS3_CREATEVERFSIZE); | |
406 | memcpy(p, verifier, NFS3_CREATEVERFSIZE); | |
407 | } | |
408 | ||
409 | /* | |
410 | * ftype3 | |
411 | * | |
412 | * enum ftype3 { | |
413 | * NF3REG = 1, | |
414 | * NF3DIR = 2, | |
415 | * NF3BLK = 3, | |
416 | * NF3CHR = 4, | |
417 | * NF3LNK = 5, | |
418 | * NF3SOCK = 6, | |
419 | * NF3FIFO = 7 | |
420 | * }; | |
421 | */ | |
422 | static void encode_ftype3(struct xdr_stream *xdr, const u32 type) | |
423 | { | |
424 | BUG_ON(type > NF3FIFO); | |
425 | encode_uint32(xdr, type); | |
426 | } | |
427 | ||
428 | /* | |
429 | * specdata3 | |
430 | * | |
431 | * struct specdata3 { | |
432 | * uint32 specdata1; | |
433 | * uint32 specdata2; | |
434 | * }; | |
435 | */ | |
436 | static void encode_specdata3(struct xdr_stream *xdr, const dev_t rdev) | |
437 | { | |
438 | __be32 *p; | |
439 | ||
440 | p = xdr_reserve_space(xdr, 8); | |
441 | *p++ = cpu_to_be32(MAJOR(rdev)); | |
442 | *p = cpu_to_be32(MINOR(rdev)); | |
443 | } | |
444 | ||
445 | /* | |
446 | * nfs_fh3 | |
447 | * | |
448 | * struct nfs_fh3 { | |
449 | * opaque data<NFS3_FHSIZE>; | |
450 | * }; | |
451 | */ | |
452 | static void encode_nfs_fh3(struct xdr_stream *xdr, const struct nfs_fh *fh) | |
453 | { | |
454 | __be32 *p; | |
455 | ||
456 | BUG_ON(fh->size > NFS3_FHSIZE); | |
457 | p = xdr_reserve_space(xdr, 4 + fh->size); | |
458 | xdr_encode_opaque(p, fh->data, fh->size); | |
459 | } | |
460 | ||
461 | /* | |
462 | * sattr3 | |
463 | * | |
464 | * enum time_how { | |
465 | * DONT_CHANGE = 0, | |
466 | * SET_TO_SERVER_TIME = 1, | |
467 | * SET_TO_CLIENT_TIME = 2 | |
468 | * }; | |
469 | * | |
470 | * union set_mode3 switch (bool set_it) { | |
471 | * case TRUE: | |
472 | * mode3 mode; | |
473 | * default: | |
474 | * void; | |
475 | * }; | |
476 | * | |
477 | * union set_uid3 switch (bool set_it) { | |
478 | * case TRUE: | |
479 | * uid3 uid; | |
480 | * default: | |
481 | * void; | |
482 | * }; | |
483 | * | |
484 | * union set_gid3 switch (bool set_it) { | |
485 | * case TRUE: | |
486 | * gid3 gid; | |
487 | * default: | |
488 | * void; | |
489 | * }; | |
490 | * | |
491 | * union set_size3 switch (bool set_it) { | |
492 | * case TRUE: | |
493 | * size3 size; | |
494 | * default: | |
495 | * void; | |
496 | * }; | |
497 | * | |
498 | * union set_atime switch (time_how set_it) { | |
499 | * case SET_TO_CLIENT_TIME: | |
500 | * nfstime3 atime; | |
501 | * default: | |
502 | * void; | |
503 | * }; | |
504 | * | |
505 | * union set_mtime switch (time_how set_it) { | |
506 | * case SET_TO_CLIENT_TIME: | |
507 | * nfstime3 mtime; | |
508 | * default: | |
509 | * void; | |
510 | * }; | |
511 | * | |
512 | * struct sattr3 { | |
513 | * set_mode3 mode; | |
514 | * set_uid3 uid; | |
515 | * set_gid3 gid; | |
516 | * set_size3 size; | |
517 | * set_atime atime; | |
518 | * set_mtime mtime; | |
519 | * }; | |
520 | */ | |
521 | static void encode_sattr3(struct xdr_stream *xdr, const struct iattr *attr) | |
522 | { | |
523 | u32 nbytes; | |
524 | __be32 *p; | |
525 | ||
526 | /* | |
527 | * In order to make only a single xdr_reserve_space() call, | |
528 | * pre-compute the total number of bytes to be reserved. | |
529 | * Six boolean values, one for each set_foo field, are always | |
530 | * present in the encoded result, so start there. | |
531 | */ | |
532 | nbytes = 6 * 4; | |
533 | if (attr->ia_valid & ATTR_MODE) | |
534 | nbytes += 4; | |
535 | if (attr->ia_valid & ATTR_UID) | |
536 | nbytes += 4; | |
537 | if (attr->ia_valid & ATTR_GID) | |
538 | nbytes += 4; | |
539 | if (attr->ia_valid & ATTR_SIZE) | |
540 | nbytes += 8; | |
541 | if (attr->ia_valid & ATTR_ATIME_SET) | |
542 | nbytes += 8; | |
543 | if (attr->ia_valid & ATTR_MTIME_SET) | |
544 | nbytes += 8; | |
545 | p = xdr_reserve_space(xdr, nbytes); | |
546 | ||
547 | xdr_encode_sattr(p, attr); | |
548 | } | |
549 | ||
550 | /* | |
551 | * diropargs3 | |
552 | * | |
553 | * struct diropargs3 { | |
554 | * nfs_fh3 dir; | |
555 | * filename3 name; | |
556 | * }; | |
557 | */ | |
558 | static void encode_diropargs3(struct xdr_stream *xdr, const struct nfs_fh *fh, | |
559 | const char *name, u32 length) | |
560 | { | |
561 | encode_nfs_fh3(xdr, fh); | |
562 | encode_filename3(xdr, name, length); | |
563 | } | |
564 | ||
565 | ||
1da177e4 LT |
566 | /* |
567 | * NFS encode functions | |
568 | */ | |
569 | ||
570 | /* | |
571 | * Encode file handle argument | |
572 | */ | |
573 | static int | |
d61005a6 | 574 | nfs3_xdr_fhandle(struct rpc_rqst *req, __be32 *p, struct nfs_fh *fh) |
1da177e4 LT |
575 | { |
576 | p = xdr_encode_fhandle(p, fh); | |
577 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); | |
578 | return 0; | |
579 | } | |
580 | ||
d9c407b1 CL |
581 | /* |
582 | * 3.3.1 GETATTR3args | |
583 | * | |
584 | * struct GETATTR3args { | |
585 | * nfs_fh3 object; | |
586 | * }; | |
587 | */ | |
588 | static int nfs3_xdr_enc_getattr3args(struct rpc_rqst *req, __be32 *p, | |
589 | const struct nfs_fh *fh) | |
590 | { | |
591 | struct xdr_stream xdr; | |
592 | ||
593 | xdr_init_encode(&xdr, &req->rq_snd_buf, p); | |
594 | encode_nfs_fh3(&xdr, fh); | |
595 | return 0; | |
596 | } | |
597 | ||
1da177e4 LT |
598 | /* |
599 | * Encode SETATTR arguments | |
600 | */ | |
601 | static int | |
d61005a6 | 602 | nfs3_xdr_sattrargs(struct rpc_rqst *req, __be32 *p, struct nfs3_sattrargs *args) |
1da177e4 LT |
603 | { |
604 | p = xdr_encode_fhandle(p, args->fh); | |
605 | p = xdr_encode_sattr(p, args->sattr); | |
606 | *p++ = htonl(args->guard); | |
607 | if (args->guard) | |
608 | p = xdr_encode_time3(p, &args->guardtime); | |
609 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); | |
610 | return 0; | |
611 | } | |
612 | ||
d9c407b1 CL |
613 | /* |
614 | * 3.3.2 SETATTR3args | |
615 | * | |
616 | * union sattrguard3 switch (bool check) { | |
617 | * case TRUE: | |
618 | * nfstime3 obj_ctime; | |
619 | * case FALSE: | |
620 | * void; | |
621 | * }; | |
622 | * | |
623 | * struct SETATTR3args { | |
624 | * nfs_fh3 object; | |
625 | * sattr3 new_attributes; | |
626 | * sattrguard3 guard; | |
627 | * }; | |
628 | */ | |
629 | static void encode_sattrguard3(struct xdr_stream *xdr, | |
630 | const struct nfs3_sattrargs *args) | |
631 | { | |
632 | __be32 *p; | |
633 | ||
634 | if (args->guard) { | |
635 | p = xdr_reserve_space(xdr, 4 + 8); | |
636 | *p++ = xdr_one; | |
637 | xdr_encode_time3(p, &args->guardtime); | |
638 | } else { | |
639 | p = xdr_reserve_space(xdr, 4); | |
640 | *p = xdr_zero; | |
641 | } | |
642 | } | |
643 | ||
644 | static int nfs3_xdr_enc_setattr3args(struct rpc_rqst *req, __be32 *p, | |
645 | const struct nfs3_sattrargs *args) | |
646 | { | |
647 | struct xdr_stream xdr; | |
648 | ||
649 | xdr_init_encode(&xdr, &req->rq_snd_buf, p); | |
650 | encode_nfs_fh3(&xdr, args->fh); | |
651 | encode_sattr3(&xdr, args->sattr); | |
652 | encode_sattrguard3(&xdr, args); | |
653 | return 0; | |
654 | } | |
655 | ||
1da177e4 LT |
656 | /* |
657 | * Encode directory ops argument | |
658 | */ | |
659 | static int | |
d61005a6 | 660 | nfs3_xdr_diropargs(struct rpc_rqst *req, __be32 *p, struct nfs3_diropargs *args) |
1da177e4 LT |
661 | { |
662 | p = xdr_encode_fhandle(p, args->fh); | |
663 | p = xdr_encode_array(p, args->name, args->len); | |
664 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); | |
665 | return 0; | |
666 | } | |
667 | ||
d9c407b1 CL |
668 | /* |
669 | * 3.3.3 LOOKUP3args | |
670 | * | |
671 | * struct LOOKUP3args { | |
672 | * diropargs3 what; | |
673 | * }; | |
674 | */ | |
675 | static int nfs3_xdr_enc_lookup3args(struct rpc_rqst *req, __be32 *p, | |
676 | const struct nfs3_diropargs *args) | |
677 | { | |
678 | struct xdr_stream xdr; | |
679 | ||
680 | xdr_init_encode(&xdr, &req->rq_snd_buf, p); | |
681 | encode_diropargs3(&xdr, args->fh, args->name, args->len); | |
682 | return 0; | |
683 | } | |
684 | ||
4fdc17b2 TM |
685 | /* |
686 | * Encode REMOVE argument | |
687 | */ | |
688 | static int | |
689 | nfs3_xdr_removeargs(struct rpc_rqst *req, __be32 *p, const struct nfs_removeargs *args) | |
690 | { | |
691 | p = xdr_encode_fhandle(p, args->fh); | |
692 | p = xdr_encode_array(p, args->name.name, args->name.len); | |
693 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); | |
694 | return 0; | |
695 | } | |
696 | ||
1da177e4 LT |
697 | /* |
698 | * Encode access() argument | |
699 | */ | |
700 | static int | |
d61005a6 | 701 | nfs3_xdr_accessargs(struct rpc_rqst *req, __be32 *p, struct nfs3_accessargs *args) |
1da177e4 LT |
702 | { |
703 | p = xdr_encode_fhandle(p, args->fh); | |
704 | *p++ = htonl(args->access); | |
705 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); | |
706 | return 0; | |
707 | } | |
708 | ||
d9c407b1 CL |
709 | /* |
710 | * 3.3.4 ACCESS3args | |
711 | * | |
712 | * struct ACCESS3args { | |
713 | * nfs_fh3 object; | |
714 | * uint32 access; | |
715 | * }; | |
716 | */ | |
717 | static void encode_access3args(struct xdr_stream *xdr, | |
718 | const struct nfs3_accessargs *args) | |
719 | { | |
720 | encode_nfs_fh3(xdr, args->fh); | |
721 | encode_uint32(xdr, args->access); | |
722 | } | |
723 | ||
724 | static int nfs3_xdr_enc_access3args(struct rpc_rqst *req, __be32 *p, | |
725 | const struct nfs3_accessargs *args) | |
726 | { | |
727 | struct xdr_stream xdr; | |
728 | ||
729 | xdr_init_encode(&xdr, &req->rq_snd_buf, p); | |
730 | encode_access3args(&xdr, args); | |
731 | return 0; | |
732 | } | |
733 | ||
734 | /* | |
735 | * 3.3.5 READLINK3args | |
736 | * | |
737 | * struct READLINK3args { | |
738 | * nfs_fh3 symlink; | |
739 | * }; | |
740 | */ | |
741 | static int nfs3_xdr_enc_readlink3args(struct rpc_rqst *req, __be32 *p, | |
742 | const struct nfs3_readlinkargs *args) | |
743 | { | |
744 | struct xdr_stream xdr; | |
745 | ||
746 | xdr_init_encode(&xdr, &req->rq_snd_buf, p); | |
747 | encode_nfs_fh3(&xdr, args->fh); | |
748 | prepare_reply_buffer(req, args->pages, args->pgbase, | |
749 | args->pglen, NFS3_readlinkres_sz); | |
750 | return 0; | |
751 | } | |
752 | ||
1da177e4 LT |
753 | /* |
754 | * Arguments to a READ call. Since we read data directly into the page | |
755 | * cache, we also set up the reply iovec here so that iov[1] points | |
756 | * exactly to the page we want to fetch. | |
757 | */ | |
758 | static int | |
d61005a6 | 759 | nfs3_xdr_readargs(struct rpc_rqst *req, __be32 *p, struct nfs_readargs *args) |
1da177e4 | 760 | { |
a17c2153 | 761 | struct rpc_auth *auth = req->rq_cred->cr_auth; |
1da177e4 LT |
762 | unsigned int replen; |
763 | u32 count = args->count; | |
764 | ||
765 | p = xdr_encode_fhandle(p, args->fh); | |
766 | p = xdr_encode_hyper(p, args->offset); | |
767 | *p++ = htonl(count); | |
768 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); | |
769 | ||
770 | /* Inline the page array */ | |
771 | replen = (RPC_REPHDRSIZE + auth->au_rslack + NFS3_readres_sz) << 2; | |
772 | xdr_inline_pages(&req->rq_rcv_buf, replen, | |
773 | args->pages, args->pgbase, count); | |
4f22ccc3 | 774 | req->rq_rcv_buf.flags |= XDRBUF_READ; |
1da177e4 LT |
775 | return 0; |
776 | } | |
777 | ||
d9c407b1 CL |
778 | /* |
779 | * 3.3.6 READ3args | |
780 | * | |
781 | * struct READ3args { | |
782 | * nfs_fh3 file; | |
783 | * offset3 offset; | |
784 | * count3 count; | |
785 | * }; | |
786 | */ | |
787 | static void encode_read3args(struct xdr_stream *xdr, | |
788 | const struct nfs_readargs *args) | |
789 | { | |
790 | __be32 *p; | |
791 | ||
792 | encode_nfs_fh3(xdr, args->fh); | |
793 | ||
794 | p = xdr_reserve_space(xdr, 8 + 4); | |
795 | p = xdr_encode_hyper(p, args->offset); | |
796 | *p = cpu_to_be32(args->count); | |
797 | } | |
798 | ||
799 | static int nfs3_xdr_enc_read3args(struct rpc_rqst *req, __be32 *p, | |
800 | const struct nfs_readargs *args) | |
801 | { | |
802 | struct xdr_stream xdr; | |
803 | ||
804 | xdr_init_encode(&xdr, &req->rq_snd_buf, p); | |
805 | encode_read3args(&xdr, args); | |
806 | prepare_reply_buffer(req, args->pages, args->pgbase, | |
807 | args->count, NFS3_readres_sz); | |
808 | req->rq_rcv_buf.flags |= XDRBUF_READ; | |
809 | return 0; | |
810 | } | |
811 | ||
1da177e4 LT |
812 | /* |
813 | * Write arguments. Splice the buffer to be written into the iovec. | |
814 | */ | |
815 | static int | |
d61005a6 | 816 | nfs3_xdr_writeargs(struct rpc_rqst *req, __be32 *p, struct nfs_writeargs *args) |
1da177e4 LT |
817 | { |
818 | struct xdr_buf *sndbuf = &req->rq_snd_buf; | |
819 | u32 count = args->count; | |
820 | ||
821 | p = xdr_encode_fhandle(p, args->fh); | |
822 | p = xdr_encode_hyper(p, args->offset); | |
823 | *p++ = htonl(count); | |
824 | *p++ = htonl(args->stable); | |
825 | *p++ = htonl(count); | |
826 | sndbuf->len = xdr_adjust_iovec(sndbuf->head, p); | |
827 | ||
828 | /* Copy the page array */ | |
829 | xdr_encode_pages(sndbuf, args->pages, args->pgbase, count); | |
4f22ccc3 | 830 | sndbuf->flags |= XDRBUF_WRITE; |
1da177e4 LT |
831 | return 0; |
832 | } | |
833 | ||
d9c407b1 CL |
834 | /* |
835 | * 3.3.7 WRITE3args | |
836 | * | |
837 | * enum stable_how { | |
838 | * UNSTABLE = 0, | |
839 | * DATA_SYNC = 1, | |
840 | * FILE_SYNC = 2 | |
841 | * }; | |
842 | * | |
843 | * struct WRITE3args { | |
844 | * nfs_fh3 file; | |
845 | * offset3 offset; | |
846 | * count3 count; | |
847 | * stable_how stable; | |
848 | * opaque data<>; | |
849 | * }; | |
850 | */ | |
851 | static void encode_write3args(struct xdr_stream *xdr, | |
852 | const struct nfs_writeargs *args) | |
853 | { | |
854 | __be32 *p; | |
855 | ||
856 | encode_nfs_fh3(xdr, args->fh); | |
857 | ||
858 | p = xdr_reserve_space(xdr, 8 + 4 + 4 + 4); | |
859 | p = xdr_encode_hyper(p, args->offset); | |
860 | *p++ = cpu_to_be32(args->count); | |
861 | ||
862 | BUG_ON(args->stable > NFS_FILE_SYNC); | |
863 | *p++ = cpu_to_be32(args->stable); | |
864 | ||
865 | *p = cpu_to_be32(args->count); | |
866 | xdr_write_pages(xdr, args->pages, args->pgbase, args->count); | |
867 | } | |
868 | ||
869 | static int nfs3_xdr_enc_write3args(struct rpc_rqst *req, __be32 *p, | |
870 | const struct nfs_writeargs *args) | |
871 | { | |
872 | struct xdr_stream xdr; | |
873 | ||
874 | xdr_init_encode(&xdr, &req->rq_snd_buf, p); | |
875 | encode_write3args(&xdr, args); | |
876 | xdr.buf->flags |= XDRBUF_WRITE; | |
877 | return 0; | |
878 | } | |
879 | ||
1da177e4 LT |
880 | /* |
881 | * Encode CREATE arguments | |
882 | */ | |
883 | static int | |
d61005a6 | 884 | nfs3_xdr_createargs(struct rpc_rqst *req, __be32 *p, struct nfs3_createargs *args) |
1da177e4 LT |
885 | { |
886 | p = xdr_encode_fhandle(p, args->fh); | |
887 | p = xdr_encode_array(p, args->name, args->len); | |
888 | ||
889 | *p++ = htonl(args->createmode); | |
890 | if (args->createmode == NFS3_CREATE_EXCLUSIVE) { | |
891 | *p++ = args->verifier[0]; | |
892 | *p++ = args->verifier[1]; | |
893 | } else | |
894 | p = xdr_encode_sattr(p, args->sattr); | |
895 | ||
896 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); | |
897 | return 0; | |
898 | } | |
899 | ||
d9c407b1 CL |
900 | /* |
901 | * 3.3.8 CREATE3args | |
902 | * | |
903 | * enum createmode3 { | |
904 | * UNCHECKED = 0, | |
905 | * GUARDED = 1, | |
906 | * EXCLUSIVE = 2 | |
907 | * }; | |
908 | * | |
909 | * union createhow3 switch (createmode3 mode) { | |
910 | * case UNCHECKED: | |
911 | * case GUARDED: | |
912 | * sattr3 obj_attributes; | |
913 | * case EXCLUSIVE: | |
914 | * createverf3 verf; | |
915 | * }; | |
916 | * | |
917 | * struct CREATE3args { | |
918 | * diropargs3 where; | |
919 | * createhow3 how; | |
920 | * }; | |
921 | */ | |
922 | static void encode_createhow3(struct xdr_stream *xdr, | |
923 | const struct nfs3_createargs *args) | |
924 | { | |
925 | encode_uint32(xdr, args->createmode); | |
926 | switch (args->createmode) { | |
927 | case NFS3_CREATE_UNCHECKED: | |
928 | case NFS3_CREATE_GUARDED: | |
929 | encode_sattr3(xdr, args->sattr); | |
930 | break; | |
931 | case NFS3_CREATE_EXCLUSIVE: | |
932 | encode_createverf3(xdr, args->verifier); | |
933 | break; | |
934 | default: | |
935 | BUG(); | |
936 | } | |
937 | } | |
938 | ||
939 | static int nfs3_xdr_enc_create3args(struct rpc_rqst *req, __be32 *p, | |
940 | const struct nfs3_createargs *args) | |
941 | { | |
942 | struct xdr_stream xdr; | |
943 | ||
944 | xdr_init_encode(&xdr, &req->rq_snd_buf, p); | |
945 | encode_diropargs3(&xdr, args->fh, args->name, args->len); | |
946 | encode_createhow3(&xdr, args); | |
947 | return 0; | |
948 | } | |
949 | ||
1da177e4 LT |
950 | /* |
951 | * Encode MKDIR arguments | |
952 | */ | |
953 | static int | |
d61005a6 | 954 | nfs3_xdr_mkdirargs(struct rpc_rqst *req, __be32 *p, struct nfs3_mkdirargs *args) |
1da177e4 LT |
955 | { |
956 | p = xdr_encode_fhandle(p, args->fh); | |
957 | p = xdr_encode_array(p, args->name, args->len); | |
958 | p = xdr_encode_sattr(p, args->sattr); | |
959 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); | |
960 | return 0; | |
961 | } | |
962 | ||
d9c407b1 CL |
963 | /* |
964 | * 3.3.9 MKDIR3args | |
965 | * | |
966 | * struct MKDIR3args { | |
967 | * diropargs3 where; | |
968 | * sattr3 attributes; | |
969 | * }; | |
970 | */ | |
971 | static int nfs3_xdr_enc_mkdir3args(struct rpc_rqst *req, __be32 *p, | |
972 | const struct nfs3_mkdirargs *args) | |
973 | { | |
974 | struct xdr_stream xdr; | |
975 | ||
976 | xdr_init_encode(&xdr, &req->rq_snd_buf, p); | |
977 | encode_diropargs3(&xdr, args->fh, args->name, args->len); | |
978 | encode_sattr3(&xdr, args->sattr); | |
979 | return 0; | |
980 | } | |
981 | ||
1da177e4 LT |
982 | /* |
983 | * Encode SYMLINK arguments | |
984 | */ | |
985 | static int | |
d61005a6 | 986 | nfs3_xdr_symlinkargs(struct rpc_rqst *req, __be32 *p, struct nfs3_symlinkargs *args) |
1da177e4 LT |
987 | { |
988 | p = xdr_encode_fhandle(p, args->fromfh); | |
989 | p = xdr_encode_array(p, args->fromname, args->fromlen); | |
990 | p = xdr_encode_sattr(p, args->sattr); | |
94a6d753 | 991 | *p++ = htonl(args->pathlen); |
1da177e4 | 992 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); |
94a6d753 CL |
993 | |
994 | /* Copy the page */ | |
995 | xdr_encode_pages(&req->rq_snd_buf, args->pages, 0, args->pathlen); | |
1da177e4 LT |
996 | return 0; |
997 | } | |
998 | ||
d9c407b1 CL |
999 | /* |
1000 | * 3.3.10 SYMLINK3args | |
1001 | * | |
1002 | * struct symlinkdata3 { | |
1003 | * sattr3 symlink_attributes; | |
1004 | * nfspath3 symlink_data; | |
1005 | * }; | |
1006 | * | |
1007 | * struct SYMLINK3args { | |
1008 | * diropargs3 where; | |
1009 | * symlinkdata3 symlink; | |
1010 | * }; | |
1011 | */ | |
1012 | static void encode_symlinkdata3(struct xdr_stream *xdr, | |
1013 | const struct nfs3_symlinkargs *args) | |
1014 | { | |
1015 | encode_sattr3(xdr, args->sattr); | |
1016 | encode_nfspath3(xdr, args->pages, args->pathlen); | |
1017 | } | |
1018 | ||
1019 | static int nfs3_xdr_enc_symlink3args(struct rpc_rqst *req, __be32 *p, | |
1020 | const struct nfs3_symlinkargs *args) | |
1021 | { | |
1022 | struct xdr_stream xdr; | |
1023 | ||
1024 | xdr_init_encode(&xdr, &req->rq_snd_buf, p); | |
1025 | encode_diropargs3(&xdr, args->fromfh, args->fromname, args->fromlen); | |
1026 | encode_symlinkdata3(&xdr, args); | |
1027 | return 0; | |
1028 | } | |
1029 | ||
1da177e4 LT |
1030 | /* |
1031 | * Encode MKNOD arguments | |
1032 | */ | |
1033 | static int | |
d61005a6 | 1034 | nfs3_xdr_mknodargs(struct rpc_rqst *req, __be32 *p, struct nfs3_mknodargs *args) |
1da177e4 LT |
1035 | { |
1036 | p = xdr_encode_fhandle(p, args->fh); | |
1037 | p = xdr_encode_array(p, args->name, args->len); | |
1038 | *p++ = htonl(args->type); | |
1039 | p = xdr_encode_sattr(p, args->sattr); | |
1040 | if (args->type == NF3CHR || args->type == NF3BLK) { | |
1041 | *p++ = htonl(MAJOR(args->rdev)); | |
1042 | *p++ = htonl(MINOR(args->rdev)); | |
1043 | } | |
1044 | ||
1045 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); | |
1046 | return 0; | |
1047 | } | |
1048 | ||
d9c407b1 CL |
1049 | /* |
1050 | * 3.3.11 MKNOD3args | |
1051 | * | |
1052 | * struct devicedata3 { | |
1053 | * sattr3 dev_attributes; | |
1054 | * specdata3 spec; | |
1055 | * }; | |
1056 | * | |
1057 | * union mknoddata3 switch (ftype3 type) { | |
1058 | * case NF3CHR: | |
1059 | * case NF3BLK: | |
1060 | * devicedata3 device; | |
1061 | * case NF3SOCK: | |
1062 | * case NF3FIFO: | |
1063 | * sattr3 pipe_attributes; | |
1064 | * default: | |
1065 | * void; | |
1066 | * }; | |
1067 | * | |
1068 | * struct MKNOD3args { | |
1069 | * diropargs3 where; | |
1070 | * mknoddata3 what; | |
1071 | * }; | |
1072 | */ | |
1073 | static void encode_devicedata3(struct xdr_stream *xdr, | |
1074 | const struct nfs3_mknodargs *args) | |
1075 | { | |
1076 | encode_sattr3(xdr, args->sattr); | |
1077 | encode_specdata3(xdr, args->rdev); | |
1078 | } | |
1079 | ||
1080 | static void encode_mknoddata3(struct xdr_stream *xdr, | |
1081 | const struct nfs3_mknodargs *args) | |
1082 | { | |
1083 | encode_ftype3(xdr, args->type); | |
1084 | switch (args->type) { | |
1085 | case NF3CHR: | |
1086 | case NF3BLK: | |
1087 | encode_devicedata3(xdr, args); | |
1088 | break; | |
1089 | case NF3SOCK: | |
1090 | case NF3FIFO: | |
1091 | encode_sattr3(xdr, args->sattr); | |
1092 | break; | |
1093 | case NF3REG: | |
1094 | case NF3DIR: | |
1095 | break; | |
1096 | default: | |
1097 | BUG(); | |
1098 | } | |
1099 | } | |
1100 | ||
1101 | static int nfs3_xdr_enc_mknod3args(struct rpc_rqst *req, __be32 *p, | |
1102 | const struct nfs3_mknodargs *args) | |
1103 | { | |
1104 | struct xdr_stream xdr; | |
1105 | ||
1106 | xdr_init_encode(&xdr, &req->rq_snd_buf, p); | |
1107 | encode_diropargs3(&xdr, args->fh, args->name, args->len); | |
1108 | encode_mknoddata3(&xdr, args); | |
1109 | return 0; | |
1110 | } | |
1111 | ||
1112 | /* | |
1113 | * 3.3.12 REMOVE3args | |
1114 | * | |
1115 | * struct REMOVE3args { | |
1116 | * diropargs3 object; | |
1117 | * }; | |
1118 | */ | |
1119 | static int nfs3_xdr_enc_remove3args(struct rpc_rqst *req, __be32 *p, | |
1120 | const struct nfs_removeargs *args) | |
1121 | { | |
1122 | struct xdr_stream xdr; | |
1123 | ||
1124 | xdr_init_encode(&xdr, &req->rq_snd_buf, p); | |
1125 | encode_diropargs3(&xdr, args->fh, args->name.name, args->name.len); | |
1126 | return 0; | |
1127 | } | |
1128 | ||
1da177e4 LT |
1129 | /* |
1130 | * Encode RENAME arguments | |
1131 | */ | |
1132 | static int | |
920769f0 | 1133 | nfs3_xdr_renameargs(struct rpc_rqst *req, __be32 *p, struct nfs_renameargs *args) |
1da177e4 | 1134 | { |
920769f0 JL |
1135 | p = xdr_encode_fhandle(p, args->old_dir); |
1136 | p = xdr_encode_array(p, args->old_name->name, args->old_name->len); | |
1137 | p = xdr_encode_fhandle(p, args->new_dir); | |
1138 | p = xdr_encode_array(p, args->new_name->name, args->new_name->len); | |
1da177e4 LT |
1139 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); |
1140 | return 0; | |
1141 | } | |
1142 | ||
d9c407b1 CL |
1143 | /* |
1144 | * 3.3.14 RENAME3args | |
1145 | * | |
1146 | * struct RENAME3args { | |
1147 | * diropargs3 from; | |
1148 | * diropargs3 to; | |
1149 | * }; | |
1150 | */ | |
1151 | static int nfs3_xdr_enc_rename3args(struct rpc_rqst *req, __be32 *p, | |
1152 | const struct nfs_renameargs *args) | |
1153 | { | |
1154 | const struct qstr *old = args->old_name; | |
1155 | const struct qstr *new = args->new_name; | |
1156 | struct xdr_stream xdr; | |
1157 | ||
1158 | xdr_init_encode(&xdr, &req->rq_snd_buf, p); | |
1159 | encode_diropargs3(&xdr, args->old_dir, old->name, old->len); | |
1160 | encode_diropargs3(&xdr, args->new_dir, new->name, new->len); | |
1161 | return 0; | |
1162 | } | |
1163 | ||
1da177e4 LT |
1164 | /* |
1165 | * Encode LINK arguments | |
1166 | */ | |
1167 | static int | |
d61005a6 | 1168 | nfs3_xdr_linkargs(struct rpc_rqst *req, __be32 *p, struct nfs3_linkargs *args) |
1da177e4 LT |
1169 | { |
1170 | p = xdr_encode_fhandle(p, args->fromfh); | |
1171 | p = xdr_encode_fhandle(p, args->tofh); | |
1172 | p = xdr_encode_array(p, args->toname, args->tolen); | |
1173 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); | |
1174 | return 0; | |
1175 | } | |
1176 | ||
d9c407b1 CL |
1177 | /* |
1178 | * 3.3.15 LINK3args | |
1179 | * | |
1180 | * struct LINK3args { | |
1181 | * nfs_fh3 file; | |
1182 | * diropargs3 link; | |
1183 | * }; | |
1184 | */ | |
1185 | static int nfs3_xdr_enc_link3args(struct rpc_rqst *req, __be32 *p, | |
1186 | const struct nfs3_linkargs *args) | |
1187 | { | |
1188 | struct xdr_stream xdr; | |
1189 | ||
1190 | xdr_init_encode(&xdr, &req->rq_snd_buf, p); | |
1191 | encode_nfs_fh3(&xdr, args->fromfh); | |
1192 | encode_diropargs3(&xdr, args->tofh, args->toname, args->tolen); | |
1193 | return 0; | |
1194 | } | |
1195 | ||
1da177e4 LT |
1196 | /* |
1197 | * Encode arguments to readdir call | |
1198 | */ | |
1199 | static int | |
d61005a6 | 1200 | nfs3_xdr_readdirargs(struct rpc_rqst *req, __be32 *p, struct nfs3_readdirargs *args) |
1da177e4 | 1201 | { |
a17c2153 | 1202 | struct rpc_auth *auth = req->rq_cred->cr_auth; |
1da177e4 LT |
1203 | unsigned int replen; |
1204 | u32 count = args->count; | |
1205 | ||
1206 | p = xdr_encode_fhandle(p, args->fh); | |
1207 | p = xdr_encode_hyper(p, args->cookie); | |
1208 | *p++ = args->verf[0]; | |
1209 | *p++ = args->verf[1]; | |
1210 | if (args->plus) { | |
1211 | /* readdirplus: need dircount + buffer size. | |
1212 | * We just make sure we make dircount big enough */ | |
1213 | *p++ = htonl(count >> 3); | |
1214 | } | |
1215 | *p++ = htonl(count); | |
1216 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); | |
1217 | ||
1218 | /* Inline the page array */ | |
1219 | replen = (RPC_REPHDRSIZE + auth->au_rslack + NFS3_readdirres_sz) << 2; | |
1220 | xdr_inline_pages(&req->rq_rcv_buf, replen, args->pages, 0, count); | |
1221 | return 0; | |
1222 | } | |
1223 | ||
d9c407b1 CL |
1224 | /* |
1225 | * 3.3.16 READDIR3args | |
1226 | * | |
1227 | * struct READDIR3args { | |
1228 | * nfs_fh3 dir; | |
1229 | * cookie3 cookie; | |
1230 | * cookieverf3 cookieverf; | |
1231 | * count3 count; | |
1232 | * }; | |
1233 | */ | |
1234 | static void encode_readdir3args(struct xdr_stream *xdr, | |
1235 | const struct nfs3_readdirargs *args) | |
1236 | { | |
1237 | __be32 *p; | |
1238 | ||
1239 | encode_nfs_fh3(xdr, args->fh); | |
1240 | ||
1241 | p = xdr_reserve_space(xdr, 8 + NFS3_COOKIEVERFSIZE + 4); | |
1242 | p = xdr_encode_cookie3(p, args->cookie); | |
1243 | p = xdr_encode_cookieverf3(p, args->verf); | |
1244 | *p = cpu_to_be32(args->count); | |
1245 | } | |
1246 | ||
1247 | static int nfs3_xdr_enc_readdir3args(struct rpc_rqst *req, __be32 *p, | |
1248 | const struct nfs3_readdirargs *args) | |
1249 | { | |
1250 | struct xdr_stream xdr; | |
1251 | ||
1252 | xdr_init_encode(&xdr, &req->rq_snd_buf, p); | |
1253 | encode_readdir3args(&xdr, args); | |
1254 | prepare_reply_buffer(req, args->pages, 0, | |
1255 | args->count, NFS3_readdirres_sz); | |
1256 | return 0; | |
1257 | } | |
1258 | ||
1259 | /* | |
1260 | * 3.3.17 READDIRPLUS3args | |
1261 | * | |
1262 | * struct READDIRPLUS3args { | |
1263 | * nfs_fh3 dir; | |
1264 | * cookie3 cookie; | |
1265 | * cookieverf3 cookieverf; | |
1266 | * count3 dircount; | |
1267 | * count3 maxcount; | |
1268 | * }; | |
1269 | */ | |
1270 | static void encode_readdirplus3args(struct xdr_stream *xdr, | |
1271 | const struct nfs3_readdirargs *args) | |
1272 | { | |
1273 | __be32 *p; | |
1274 | ||
1275 | encode_nfs_fh3(xdr, args->fh); | |
1276 | ||
1277 | p = xdr_reserve_space(xdr, 8 + NFS3_COOKIEVERFSIZE + 4 + 4); | |
1278 | p = xdr_encode_cookie3(p, args->cookie); | |
1279 | p = xdr_encode_cookieverf3(p, args->verf); | |
1280 | ||
1281 | /* | |
1282 | * readdirplus: need dircount + buffer size. | |
1283 | * We just make sure we make dircount big enough | |
1284 | */ | |
1285 | *p++ = cpu_to_be32(args->count >> 3); | |
1286 | ||
1287 | *p = cpu_to_be32(args->count); | |
1288 | } | |
1289 | ||
1290 | static int nfs3_xdr_enc_readdirplus3args(struct rpc_rqst *req, __be32 *p, | |
1291 | const struct nfs3_readdirargs *args) | |
1292 | { | |
1293 | struct xdr_stream xdr; | |
1294 | ||
1295 | xdr_init_encode(&xdr, &req->rq_snd_buf, p); | |
1296 | encode_readdirplus3args(&xdr, args); | |
1297 | prepare_reply_buffer(req, args->pages, 0, | |
1298 | args->count, NFS3_readdirres_sz); | |
1299 | return 0; | |
1300 | } | |
1301 | ||
1da177e4 LT |
1302 | /* |
1303 | * Decode the result of a readdir call. | |
1304 | * We just check for syntactical correctness. | |
1305 | */ | |
1306 | static int | |
d61005a6 | 1307 | nfs3_xdr_readdirres(struct rpc_rqst *req, __be32 *p, struct nfs3_readdirres *res) |
1da177e4 LT |
1308 | { |
1309 | struct xdr_buf *rcvbuf = &req->rq_rcv_buf; | |
1310 | struct kvec *iov = rcvbuf->head; | |
1311 | struct page **page; | |
c957c526 | 1312 | size_t hdrlen; |
afa8ccc9 | 1313 | u32 recvd, pglen; |
ac396128 | 1314 | int status; |
1da177e4 LT |
1315 | |
1316 | status = ntohl(*p++); | |
1317 | /* Decode post_op_attrs */ | |
1318 | p = xdr_decode_post_op_attr(p, res->dir_attr); | |
1319 | if (status) | |
856dff3d | 1320 | return nfs_stat_to_errno(status); |
1da177e4 LT |
1321 | /* Decode verifier cookie */ |
1322 | if (res->verf) { | |
1323 | res->verf[0] = *p++; | |
1324 | res->verf[1] = *p++; | |
1325 | } else { | |
1326 | p += 2; | |
1327 | } | |
1328 | ||
1329 | hdrlen = (u8 *) p - (u8 *) iov->iov_base; | |
1330 | if (iov->iov_len < hdrlen) { | |
fe82a183 | 1331 | dprintk("NFS: READDIR reply header overflowed:" |
c957c526 | 1332 | "length %Zu > %Zu\n", hdrlen, iov->iov_len); |
1da177e4 LT |
1333 | return -errno_NFSERR_IO; |
1334 | } else if (iov->iov_len != hdrlen) { | |
1335 | dprintk("NFS: READDIR header is short. iovec will be shifted.\n"); | |
1336 | xdr_shift_buf(rcvbuf, iov->iov_len - hdrlen); | |
1337 | } | |
1338 | ||
1339 | pglen = rcvbuf->page_len; | |
1340 | recvd = rcvbuf->len - hdrlen; | |
1341 | if (pglen > recvd) | |
1342 | pglen = recvd; | |
1343 | page = rcvbuf->pages; | |
643f8111 | 1344 | |
ac396128 | 1345 | return pglen; |
1da177e4 LT |
1346 | } |
1347 | ||
0dbb4c67 | 1348 | __be32 * |
82f2e547 | 1349 | nfs3_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry, struct nfs_server *server, int plus) |
1da177e4 | 1350 | { |
babddc72 | 1351 | __be32 *p; |
1da177e4 LT |
1352 | struct nfs_entry old = *entry; |
1353 | ||
babddc72 BS |
1354 | p = xdr_inline_decode(xdr, 4); |
1355 | if (unlikely(!p)) | |
1356 | goto out_overflow; | |
1357 | if (!ntohl(*p++)) { | |
1358 | p = xdr_inline_decode(xdr, 4); | |
1359 | if (unlikely(!p)) | |
1360 | goto out_overflow; | |
1361 | if (!ntohl(*p++)) | |
1da177e4 LT |
1362 | return ERR_PTR(-EAGAIN); |
1363 | entry->eof = 1; | |
1364 | return ERR_PTR(-EBADCOOKIE); | |
1365 | } | |
1366 | ||
babddc72 BS |
1367 | p = xdr_inline_decode(xdr, 12); |
1368 | if (unlikely(!p)) | |
1369 | goto out_overflow; | |
1da177e4 LT |
1370 | p = xdr_decode_hyper(p, &entry->ino); |
1371 | entry->len = ntohl(*p++); | |
babddc72 BS |
1372 | |
1373 | p = xdr_inline_decode(xdr, entry->len + 8); | |
1374 | if (unlikely(!p)) | |
1375 | goto out_overflow; | |
1da177e4 LT |
1376 | entry->name = (const char *) p; |
1377 | p += XDR_QUADLEN(entry->len); | |
1378 | entry->prev_cookie = entry->cookie; | |
1379 | p = xdr_decode_hyper(p, &entry->cookie); | |
1380 | ||
0b26a0bf | 1381 | entry->d_type = DT_UNKNOWN; |
1da177e4 LT |
1382 | if (plus) { |
1383 | entry->fattr->valid = 0; | |
babddc72 BS |
1384 | p = xdr_decode_post_op_attr_stream(xdr, entry->fattr); |
1385 | if (IS_ERR(p)) | |
1386 | goto out_overflow_exit; | |
0b26a0bf | 1387 | entry->d_type = nfs_umode_to_dtype(entry->fattr->mode); |
1da177e4 | 1388 | /* In fact, a post_op_fh3: */ |
babddc72 BS |
1389 | p = xdr_inline_decode(xdr, 4); |
1390 | if (unlikely(!p)) | |
1391 | goto out_overflow; | |
1da177e4 | 1392 | if (*p++) { |
babddc72 BS |
1393 | p = xdr_decode_fhandle_stream(xdr, entry->fh); |
1394 | if (IS_ERR(p)) | |
1395 | goto out_overflow_exit; | |
1da177e4 LT |
1396 | /* Ugh -- server reply was truncated */ |
1397 | if (p == NULL) { | |
1398 | dprintk("NFS: FH truncated\n"); | |
1399 | *entry = old; | |
1400 | return ERR_PTR(-EAGAIN); | |
1401 | } | |
1402 | } else | |
1403 | memset((u8*)(entry->fh), 0, sizeof(*entry->fh)); | |
1404 | } | |
1405 | ||
babddc72 BS |
1406 | p = xdr_inline_peek(xdr, 8); |
1407 | if (p != NULL) | |
1408 | entry->eof = !p[0] && p[1]; | |
1409 | else | |
1410 | entry->eof = 0; | |
1411 | ||
1da177e4 | 1412 | return p; |
babddc72 BS |
1413 | |
1414 | out_overflow: | |
1415 | print_overflow_msg(__func__, xdr); | |
1416 | out_overflow_exit: | |
463a376e | 1417 | return ERR_PTR(-EAGAIN); |
1da177e4 LT |
1418 | } |
1419 | ||
1420 | /* | |
1421 | * Encode COMMIT arguments | |
1422 | */ | |
1423 | static int | |
d61005a6 | 1424 | nfs3_xdr_commitargs(struct rpc_rqst *req, __be32 *p, struct nfs_writeargs *args) |
1da177e4 LT |
1425 | { |
1426 | p = xdr_encode_fhandle(p, args->fh); | |
1427 | p = xdr_encode_hyper(p, args->offset); | |
1428 | *p++ = htonl(args->count); | |
1429 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); | |
1430 | return 0; | |
1431 | } | |
1432 | ||
d9c407b1 CL |
1433 | /* |
1434 | * 3.3.21 COMMIT3args | |
1435 | * | |
1436 | * struct COMMIT3args { | |
1437 | * nfs_fh3 file; | |
1438 | * offset3 offset; | |
1439 | * count3 count; | |
1440 | * }; | |
1441 | */ | |
1442 | static void encode_commit3args(struct xdr_stream *xdr, | |
1443 | const struct nfs_writeargs *args) | |
1444 | { | |
1445 | __be32 *p; | |
1446 | ||
1447 | encode_nfs_fh3(xdr, args->fh); | |
1448 | ||
1449 | p = xdr_reserve_space(xdr, 8 + 4); | |
1450 | p = xdr_encode_hyper(p, args->offset); | |
1451 | *p = cpu_to_be32(args->count); | |
1452 | } | |
1453 | ||
1454 | static int nfs3_xdr_enc_commit3args(struct rpc_rqst *req, __be32 *p, | |
1455 | const struct nfs_writeargs *args) | |
1456 | { | |
1457 | struct xdr_stream xdr; | |
1458 | ||
1459 | xdr_init_encode(&xdr, &req->rq_snd_buf, p); | |
1460 | encode_commit3args(&xdr, args); | |
1461 | return 0; | |
1462 | } | |
1463 | ||
b7fa0554 AG |
1464 | #ifdef CONFIG_NFS_V3_ACL |
1465 | /* | |
1466 | * Encode GETACL arguments | |
1467 | */ | |
1468 | static int | |
d61005a6 | 1469 | nfs3_xdr_getaclargs(struct rpc_rqst *req, __be32 *p, |
b7fa0554 AG |
1470 | struct nfs3_getaclargs *args) |
1471 | { | |
a17c2153 | 1472 | struct rpc_auth *auth = req->rq_cred->cr_auth; |
b7fa0554 AG |
1473 | unsigned int replen; |
1474 | ||
1475 | p = xdr_encode_fhandle(p, args->fh); | |
1476 | *p++ = htonl(args->mask); | |
1477 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); | |
1478 | ||
1479 | if (args->mask & (NFS_ACL | NFS_DFACL)) { | |
1480 | /* Inline the page array */ | |
1481 | replen = (RPC_REPHDRSIZE + auth->au_rslack + | |
1482 | ACL3_getaclres_sz) << 2; | |
1483 | xdr_inline_pages(&req->rq_rcv_buf, replen, args->pages, 0, | |
1484 | NFSACL_MAXPAGES << PAGE_SHIFT); | |
1485 | } | |
1486 | return 0; | |
1487 | } | |
1488 | ||
d9c407b1 CL |
1489 | static int nfs3_xdr_enc_getacl3args(struct rpc_rqst *req, __be32 *p, |
1490 | const struct nfs3_getaclargs *args) | |
1491 | { | |
1492 | struct xdr_stream xdr; | |
1493 | ||
1494 | xdr_init_encode(&xdr, &req->rq_snd_buf, p); | |
1495 | encode_nfs_fh3(&xdr, args->fh); | |
1496 | encode_uint32(&xdr, args->mask); | |
1497 | if (args->mask & (NFS_ACL | NFS_DFACL)) | |
1498 | prepare_reply_buffer(req, args->pages, 0, | |
1499 | NFSACL_MAXPAGES << PAGE_SHIFT, | |
1500 | ACL3_getaclres_sz); | |
1501 | return 0; | |
1502 | } | |
1503 | ||
b7fa0554 AG |
1504 | /* |
1505 | * Encode SETACL arguments | |
1506 | */ | |
1507 | static int | |
d61005a6 | 1508 | nfs3_xdr_setaclargs(struct rpc_rqst *req, __be32 *p, |
b7fa0554 AG |
1509 | struct nfs3_setaclargs *args) |
1510 | { | |
1511 | struct xdr_buf *buf = &req->rq_snd_buf; | |
ae46141f TM |
1512 | unsigned int base; |
1513 | int err; | |
b7fa0554 AG |
1514 | |
1515 | p = xdr_encode_fhandle(p, NFS_FH(args->inode)); | |
1516 | *p++ = htonl(args->mask); | |
ae46141f TM |
1517 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); |
1518 | base = req->rq_slen; | |
1519 | ||
1520 | if (args->npages != 0) | |
1521 | xdr_encode_pages(buf, args->pages, 0, args->len); | |
1522 | else | |
83404372 TM |
1523 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, |
1524 | p + XDR_QUADLEN(args->len)); | |
b7fa0554 AG |
1525 | |
1526 | err = nfsacl_encode(buf, base, args->inode, | |
1527 | (args->mask & NFS_ACL) ? | |
1528 | args->acl_access : NULL, 1, 0); | |
1529 | if (err > 0) | |
1530 | err = nfsacl_encode(buf, base + err, args->inode, | |
1531 | (args->mask & NFS_DFACL) ? | |
1532 | args->acl_default : NULL, 1, | |
1533 | NFS_ACL_DEFAULT); | |
1534 | return (err > 0) ? 0 : err; | |
1535 | } | |
d9c407b1 CL |
1536 | |
1537 | static int nfs3_xdr_enc_setacl3args(struct rpc_rqst *req, __be32 *p, | |
1538 | const struct nfs3_setaclargs *args) | |
1539 | { | |
1540 | struct xdr_stream xdr; | |
1541 | unsigned int base; | |
1542 | int error; | |
1543 | ||
1544 | xdr_init_encode(&xdr, &req->rq_snd_buf, p); | |
1545 | encode_nfs_fh3(&xdr, NFS_FH(args->inode)); | |
1546 | encode_uint32(&xdr, args->mask); | |
1547 | if (args->npages != 0) | |
1548 | xdr_write_pages(&xdr, args->pages, 0, args->len); | |
1549 | ||
1550 | base = req->rq_slen; | |
1551 | error = nfsacl_encode(xdr.buf, base, args->inode, | |
1552 | (args->mask & NFS_ACL) ? | |
1553 | args->acl_access : NULL, 1, 0); | |
1554 | BUG_ON(error < 0); | |
1555 | error = nfsacl_encode(xdr.buf, base + error, args->inode, | |
1556 | (args->mask & NFS_DFACL) ? | |
1557 | args->acl_default : NULL, 1, | |
1558 | NFS_ACL_DEFAULT); | |
1559 | BUG_ON(error < 0); | |
1560 | return 0; | |
1561 | } | |
1562 | ||
b7fa0554 AG |
1563 | #endif /* CONFIG_NFS_V3_ACL */ |
1564 | ||
1da177e4 LT |
1565 | /* |
1566 | * NFS XDR decode functions | |
1567 | */ | |
1568 | ||
1569 | /* | |
1570 | * Decode attrstat reply. | |
1571 | */ | |
1572 | static int | |
d61005a6 | 1573 | nfs3_xdr_attrstat(struct rpc_rqst *req, __be32 *p, struct nfs_fattr *fattr) |
1da177e4 LT |
1574 | { |
1575 | int status; | |
1576 | ||
1577 | if ((status = ntohl(*p++))) | |
856dff3d | 1578 | return nfs_stat_to_errno(status); |
1da177e4 LT |
1579 | xdr_decode_fattr(p, fattr); |
1580 | return 0; | |
1581 | } | |
1582 | ||
1583 | /* | |
1584 | * Decode status+wcc_data reply | |
1585 | * SATTR, REMOVE, RMDIR | |
1586 | */ | |
1587 | static int | |
d61005a6 | 1588 | nfs3_xdr_wccstat(struct rpc_rqst *req, __be32 *p, struct nfs_fattr *fattr) |
1da177e4 LT |
1589 | { |
1590 | int status; | |
1591 | ||
1592 | if ((status = ntohl(*p++))) | |
856dff3d | 1593 | status = nfs_stat_to_errno(status); |
1da177e4 LT |
1594 | xdr_decode_wcc_data(p, fattr); |
1595 | return status; | |
1596 | } | |
1597 | ||
4fdc17b2 TM |
1598 | static int |
1599 | nfs3_xdr_removeres(struct rpc_rqst *req, __be32 *p, struct nfs_removeres *res) | |
1600 | { | |
d346890b | 1601 | return nfs3_xdr_wccstat(req, p, res->dir_attr); |
4fdc17b2 TM |
1602 | } |
1603 | ||
1da177e4 LT |
1604 | /* |
1605 | * Decode LOOKUP reply | |
1606 | */ | |
1607 | static int | |
d61005a6 | 1608 | nfs3_xdr_lookupres(struct rpc_rqst *req, __be32 *p, struct nfs3_diropres *res) |
1da177e4 LT |
1609 | { |
1610 | int status; | |
1611 | ||
1612 | if ((status = ntohl(*p++))) { | |
856dff3d | 1613 | status = nfs_stat_to_errno(status); |
1da177e4 LT |
1614 | } else { |
1615 | if (!(p = xdr_decode_fhandle(p, res->fh))) | |
1616 | return -errno_NFSERR_IO; | |
1617 | p = xdr_decode_post_op_attr(p, res->fattr); | |
1618 | } | |
1619 | xdr_decode_post_op_attr(p, res->dir_attr); | |
1620 | return status; | |
1621 | } | |
1622 | ||
1623 | /* | |
1624 | * Decode ACCESS reply | |
1625 | */ | |
1626 | static int | |
d61005a6 | 1627 | nfs3_xdr_accessres(struct rpc_rqst *req, __be32 *p, struct nfs3_accessres *res) |
1da177e4 LT |
1628 | { |
1629 | int status = ntohl(*p++); | |
1630 | ||
1631 | p = xdr_decode_post_op_attr(p, res->fattr); | |
1632 | if (status) | |
856dff3d | 1633 | return nfs_stat_to_errno(status); |
1da177e4 LT |
1634 | res->access = ntohl(*p++); |
1635 | return 0; | |
1636 | } | |
1637 | ||
1638 | static int | |
d61005a6 | 1639 | nfs3_xdr_readlinkargs(struct rpc_rqst *req, __be32 *p, struct nfs3_readlinkargs *args) |
1da177e4 | 1640 | { |
a17c2153 | 1641 | struct rpc_auth *auth = req->rq_cred->cr_auth; |
1da177e4 LT |
1642 | unsigned int replen; |
1643 | ||
1644 | p = xdr_encode_fhandle(p, args->fh); | |
1645 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); | |
1646 | ||
1647 | /* Inline the page array */ | |
1648 | replen = (RPC_REPHDRSIZE + auth->au_rslack + NFS3_readlinkres_sz) << 2; | |
1649 | xdr_inline_pages(&req->rq_rcv_buf, replen, args->pages, args->pgbase, args->pglen); | |
1650 | return 0; | |
1651 | } | |
1652 | ||
1653 | /* | |
1654 | * Decode READLINK reply | |
1655 | */ | |
1656 | static int | |
d61005a6 | 1657 | nfs3_xdr_readlinkres(struct rpc_rqst *req, __be32 *p, struct nfs_fattr *fattr) |
1da177e4 LT |
1658 | { |
1659 | struct xdr_buf *rcvbuf = &req->rq_rcv_buf; | |
1660 | struct kvec *iov = rcvbuf->head; | |
c957c526 CL |
1661 | size_t hdrlen; |
1662 | u32 len, recvd; | |
1da177e4 LT |
1663 | int status; |
1664 | ||
1665 | status = ntohl(*p++); | |
1666 | p = xdr_decode_post_op_attr(p, fattr); | |
1667 | ||
1668 | if (status != 0) | |
856dff3d | 1669 | return nfs_stat_to_errno(status); |
1da177e4 LT |
1670 | |
1671 | /* Convert length of symlink */ | |
1672 | len = ntohl(*p++); | |
c957c526 | 1673 | if (len >= rcvbuf->page_len) { |
fe82a183 | 1674 | dprintk("nfs: server returned giant symlink!\n"); |
1da177e4 LT |
1675 | return -ENAMETOOLONG; |
1676 | } | |
1677 | ||
1678 | hdrlen = (u8 *) p - (u8 *) iov->iov_base; | |
1679 | if (iov->iov_len < hdrlen) { | |
fe82a183 | 1680 | dprintk("NFS: READLINK reply header overflowed:" |
c957c526 | 1681 | "length %Zu > %Zu\n", hdrlen, iov->iov_len); |
1da177e4 LT |
1682 | return -errno_NFSERR_IO; |
1683 | } else if (iov->iov_len != hdrlen) { | |
fe82a183 CL |
1684 | dprintk("NFS: READLINK header is short. " |
1685 | "iovec will be shifted.\n"); | |
1da177e4 LT |
1686 | xdr_shift_buf(rcvbuf, iov->iov_len - hdrlen); |
1687 | } | |
1688 | recvd = req->rq_rcv_buf.len - hdrlen; | |
1689 | if (recvd < len) { | |
fe82a183 | 1690 | dprintk("NFS: server cheating in readlink reply: " |
1da177e4 LT |
1691 | "count %u > recvd %u\n", len, recvd); |
1692 | return -EIO; | |
1693 | } | |
1694 | ||
b4687da7 | 1695 | xdr_terminate_string(rcvbuf, len); |
1da177e4 LT |
1696 | return 0; |
1697 | } | |
1698 | ||
1699 | /* | |
1700 | * Decode READ reply | |
1701 | */ | |
1702 | static int | |
d61005a6 | 1703 | nfs3_xdr_readres(struct rpc_rqst *req, __be32 *p, struct nfs_readres *res) |
1da177e4 LT |
1704 | { |
1705 | struct kvec *iov = req->rq_rcv_buf.head; | |
c957c526 CL |
1706 | size_t hdrlen; |
1707 | u32 count, ocount, recvd; | |
1708 | int status; | |
1da177e4 LT |
1709 | |
1710 | status = ntohl(*p++); | |
1711 | p = xdr_decode_post_op_attr(p, res->fattr); | |
1712 | ||
1713 | if (status != 0) | |
856dff3d | 1714 | return nfs_stat_to_errno(status); |
1da177e4 | 1715 | |
c957c526 | 1716 | /* Decode reply count and EOF flag. NFSv3 is somewhat redundant |
1da177e4 LT |
1717 | * in that it puts the count both in the res struct and in the |
1718 | * opaque data count. */ | |
1719 | count = ntohl(*p++); | |
1720 | res->eof = ntohl(*p++); | |
1721 | ocount = ntohl(*p++); | |
1722 | ||
1723 | if (ocount != count) { | |
fe82a183 | 1724 | dprintk("NFS: READ count doesn't match RPC opaque count.\n"); |
1da177e4 LT |
1725 | return -errno_NFSERR_IO; |
1726 | } | |
1727 | ||
1728 | hdrlen = (u8 *) p - (u8 *) iov->iov_base; | |
1729 | if (iov->iov_len < hdrlen) { | |
fe82a183 | 1730 | dprintk("NFS: READ reply header overflowed:" |
c957c526 | 1731 | "length %Zu > %Zu\n", hdrlen, iov->iov_len); |
1da177e4 LT |
1732 | return -errno_NFSERR_IO; |
1733 | } else if (iov->iov_len != hdrlen) { | |
1734 | dprintk("NFS: READ header is short. iovec will be shifted.\n"); | |
1735 | xdr_shift_buf(&req->rq_rcv_buf, iov->iov_len - hdrlen); | |
1736 | } | |
1737 | ||
1738 | recvd = req->rq_rcv_buf.len - hdrlen; | |
1739 | if (count > recvd) { | |
fe82a183 | 1740 | dprintk("NFS: server cheating in read reply: " |
c957c526 | 1741 | "count %u > recvd %u\n", count, recvd); |
1da177e4 LT |
1742 | count = recvd; |
1743 | res->eof = 0; | |
1744 | } | |
1745 | ||
1746 | if (count < res->count) | |
1747 | res->count = count; | |
1748 | ||
1749 | return count; | |
1750 | } | |
1751 | ||
1752 | /* | |
1753 | * Decode WRITE response | |
1754 | */ | |
1755 | static int | |
d61005a6 | 1756 | nfs3_xdr_writeres(struct rpc_rqst *req, __be32 *p, struct nfs_writeres *res) |
1da177e4 LT |
1757 | { |
1758 | int status; | |
1759 | ||
1760 | status = ntohl(*p++); | |
1761 | p = xdr_decode_wcc_data(p, res->fattr); | |
1762 | ||
1763 | if (status != 0) | |
856dff3d | 1764 | return nfs_stat_to_errno(status); |
1da177e4 LT |
1765 | |
1766 | res->count = ntohl(*p++); | |
1767 | res->verf->committed = (enum nfs3_stable_how)ntohl(*p++); | |
1768 | res->verf->verifier[0] = *p++; | |
1769 | res->verf->verifier[1] = *p++; | |
1770 | ||
1771 | return res->count; | |
1772 | } | |
1773 | ||
1774 | /* | |
1775 | * Decode a CREATE response | |
1776 | */ | |
1777 | static int | |
d61005a6 | 1778 | nfs3_xdr_createres(struct rpc_rqst *req, __be32 *p, struct nfs3_diropres *res) |
1da177e4 LT |
1779 | { |
1780 | int status; | |
1781 | ||
1782 | status = ntohl(*p++); | |
1783 | if (status == 0) { | |
1784 | if (*p++) { | |
1785 | if (!(p = xdr_decode_fhandle(p, res->fh))) | |
1786 | return -errno_NFSERR_IO; | |
1787 | p = xdr_decode_post_op_attr(p, res->fattr); | |
1788 | } else { | |
1789 | memset(res->fh, 0, sizeof(*res->fh)); | |
1790 | /* Do decode post_op_attr but set it to NULL */ | |
1791 | p = xdr_decode_post_op_attr(p, res->fattr); | |
1792 | res->fattr->valid = 0; | |
1793 | } | |
1794 | } else { | |
856dff3d | 1795 | status = nfs_stat_to_errno(status); |
1da177e4 LT |
1796 | } |
1797 | p = xdr_decode_wcc_data(p, res->dir_attr); | |
1798 | return status; | |
1799 | } | |
1800 | ||
1801 | /* | |
1802 | * Decode RENAME reply | |
1803 | */ | |
1804 | static int | |
e8582a8b | 1805 | nfs3_xdr_renameres(struct rpc_rqst *req, __be32 *p, struct nfs_renameres *res) |
1da177e4 LT |
1806 | { |
1807 | int status; | |
1808 | ||
1809 | if ((status = ntohl(*p++)) != 0) | |
856dff3d | 1810 | status = nfs_stat_to_errno(status); |
e8582a8b JL |
1811 | p = xdr_decode_wcc_data(p, res->old_fattr); |
1812 | p = xdr_decode_wcc_data(p, res->new_fattr); | |
1da177e4 LT |
1813 | return status; |
1814 | } | |
1815 | ||
1816 | /* | |
1817 | * Decode LINK reply | |
1818 | */ | |
1819 | static int | |
d61005a6 | 1820 | nfs3_xdr_linkres(struct rpc_rqst *req, __be32 *p, struct nfs3_linkres *res) |
1da177e4 LT |
1821 | { |
1822 | int status; | |
1823 | ||
1824 | if ((status = ntohl(*p++)) != 0) | |
856dff3d | 1825 | status = nfs_stat_to_errno(status); |
1da177e4 LT |
1826 | p = xdr_decode_post_op_attr(p, res->fattr); |
1827 | p = xdr_decode_wcc_data(p, res->dir_attr); | |
1828 | return status; | |
1829 | } | |
1830 | ||
1831 | /* | |
1832 | * Decode FSSTAT reply | |
1833 | */ | |
1834 | static int | |
d61005a6 | 1835 | nfs3_xdr_fsstatres(struct rpc_rqst *req, __be32 *p, struct nfs_fsstat *res) |
1da177e4 LT |
1836 | { |
1837 | int status; | |
1838 | ||
1839 | status = ntohl(*p++); | |
1840 | ||
1841 | p = xdr_decode_post_op_attr(p, res->fattr); | |
1842 | if (status != 0) | |
856dff3d | 1843 | return nfs_stat_to_errno(status); |
1da177e4 LT |
1844 | |
1845 | p = xdr_decode_hyper(p, &res->tbytes); | |
1846 | p = xdr_decode_hyper(p, &res->fbytes); | |
1847 | p = xdr_decode_hyper(p, &res->abytes); | |
1848 | p = xdr_decode_hyper(p, &res->tfiles); | |
1849 | p = xdr_decode_hyper(p, &res->ffiles); | |
1850 | p = xdr_decode_hyper(p, &res->afiles); | |
1851 | ||
1852 | /* ignore invarsec */ | |
1853 | return 0; | |
1854 | } | |
1855 | ||
1856 | /* | |
1857 | * Decode FSINFO reply | |
1858 | */ | |
1859 | static int | |
d61005a6 | 1860 | nfs3_xdr_fsinfores(struct rpc_rqst *req, __be32 *p, struct nfs_fsinfo *res) |
1da177e4 LT |
1861 | { |
1862 | int status; | |
1863 | ||
1864 | status = ntohl(*p++); | |
1865 | ||
1866 | p = xdr_decode_post_op_attr(p, res->fattr); | |
1867 | if (status != 0) | |
856dff3d | 1868 | return nfs_stat_to_errno(status); |
1da177e4 LT |
1869 | |
1870 | res->rtmax = ntohl(*p++); | |
1871 | res->rtpref = ntohl(*p++); | |
1872 | res->rtmult = ntohl(*p++); | |
1873 | res->wtmax = ntohl(*p++); | |
1874 | res->wtpref = ntohl(*p++); | |
1875 | res->wtmult = ntohl(*p++); | |
1876 | res->dtpref = ntohl(*p++); | |
1877 | p = xdr_decode_hyper(p, &res->maxfilesize); | |
6b96724e | 1878 | p = xdr_decode_time3(p, &res->time_delta); |
1da177e4 | 1879 | |
6b96724e | 1880 | /* ignore properties */ |
1da177e4 LT |
1881 | res->lease_time = 0; |
1882 | return 0; | |
1883 | } | |
1884 | ||
1885 | /* | |
1886 | * Decode PATHCONF reply | |
1887 | */ | |
1888 | static int | |
d61005a6 | 1889 | nfs3_xdr_pathconfres(struct rpc_rqst *req, __be32 *p, struct nfs_pathconf *res) |
1da177e4 LT |
1890 | { |
1891 | int status; | |
1892 | ||
1893 | status = ntohl(*p++); | |
1894 | ||
1895 | p = xdr_decode_post_op_attr(p, res->fattr); | |
1896 | if (status != 0) | |
856dff3d | 1897 | return nfs_stat_to_errno(status); |
1da177e4 LT |
1898 | res->max_link = ntohl(*p++); |
1899 | res->max_namelen = ntohl(*p++); | |
1900 | ||
1901 | /* ignore remaining fields */ | |
1902 | return 0; | |
1903 | } | |
1904 | ||
1905 | /* | |
1906 | * Decode COMMIT reply | |
1907 | */ | |
1908 | static int | |
d61005a6 | 1909 | nfs3_xdr_commitres(struct rpc_rqst *req, __be32 *p, struct nfs_writeres *res) |
1da177e4 LT |
1910 | { |
1911 | int status; | |
1912 | ||
1913 | status = ntohl(*p++); | |
1914 | p = xdr_decode_wcc_data(p, res->fattr); | |
1915 | if (status != 0) | |
856dff3d | 1916 | return nfs_stat_to_errno(status); |
1da177e4 LT |
1917 | |
1918 | res->verf->verifier[0] = *p++; | |
1919 | res->verf->verifier[1] = *p++; | |
1920 | return 0; | |
1921 | } | |
1922 | ||
b7fa0554 AG |
1923 | #ifdef CONFIG_NFS_V3_ACL |
1924 | /* | |
1925 | * Decode GETACL reply | |
1926 | */ | |
1927 | static int | |
d61005a6 | 1928 | nfs3_xdr_getaclres(struct rpc_rqst *req, __be32 *p, |
b7fa0554 AG |
1929 | struct nfs3_getaclres *res) |
1930 | { | |
1931 | struct xdr_buf *buf = &req->rq_rcv_buf; | |
1932 | int status = ntohl(*p++); | |
1933 | struct posix_acl **acl; | |
1934 | unsigned int *aclcnt; | |
1935 | int err, base; | |
1936 | ||
1937 | if (status != 0) | |
856dff3d | 1938 | return nfs_stat_to_errno(status); |
b7fa0554 AG |
1939 | p = xdr_decode_post_op_attr(p, res->fattr); |
1940 | res->mask = ntohl(*p++); | |
1941 | if (res->mask & ~(NFS_ACL|NFS_ACLCNT|NFS_DFACL|NFS_DFACLCNT)) | |
1942 | return -EINVAL; | |
1943 | base = (char *)p - (char *)req->rq_rcv_buf.head->iov_base; | |
1944 | ||
1945 | acl = (res->mask & NFS_ACL) ? &res->acl_access : NULL; | |
1946 | aclcnt = (res->mask & NFS_ACLCNT) ? &res->acl_access_count : NULL; | |
1947 | err = nfsacl_decode(buf, base, aclcnt, acl); | |
1948 | ||
1949 | acl = (res->mask & NFS_DFACL) ? &res->acl_default : NULL; | |
1950 | aclcnt = (res->mask & NFS_DFACLCNT) ? &res->acl_default_count : NULL; | |
1951 | if (err > 0) | |
1952 | err = nfsacl_decode(buf, base + err, aclcnt, acl); | |
1953 | return (err > 0) ? 0 : err; | |
1954 | } | |
1955 | ||
1956 | /* | |
1957 | * Decode setacl reply. | |
1958 | */ | |
1959 | static int | |
d61005a6 | 1960 | nfs3_xdr_setaclres(struct rpc_rqst *req, __be32 *p, struct nfs_fattr *fattr) |
b7fa0554 AG |
1961 | { |
1962 | int status = ntohl(*p++); | |
1963 | ||
1964 | if (status) | |
856dff3d | 1965 | return nfs_stat_to_errno(status); |
b7fa0554 AG |
1966 | xdr_decode_post_op_attr(p, fattr); |
1967 | return 0; | |
1968 | } | |
1969 | #endif /* CONFIG_NFS_V3_ACL */ | |
1970 | ||
1da177e4 LT |
1971 | #define PROC(proc, argtype, restype, timer) \ |
1972 | [NFS3PROC_##proc] = { \ | |
1973 | .p_proc = NFS3PROC_##proc, \ | |
ad96b5b5 | 1974 | .p_encode = (kxdrproc_t)nfs3_xdr_enc_##argtype##3args, \ |
1da177e4 | 1975 | .p_decode = (kxdrproc_t) nfs3_xdr_##restype, \ |
ad96b5b5 | 1976 | .p_arglen = NFS3_##argtype##args_sz, \ |
2bea90d4 | 1977 | .p_replen = NFS3_##restype##_sz, \ |
cc0175c1 CL |
1978 | .p_timer = timer, \ |
1979 | .p_statidx = NFS3PROC_##proc, \ | |
1980 | .p_name = #proc, \ | |
1da177e4 LT |
1981 | } |
1982 | ||
1983 | struct rpc_procinfo nfs3_procedures[] = { | |
ad96b5b5 CL |
1984 | PROC(GETATTR, getattr, attrstat, 1), |
1985 | PROC(SETATTR, setattr, wccstat, 0), | |
1986 | PROC(LOOKUP, lookup, lookupres, 2), | |
1987 | PROC(ACCESS, access, accessres, 1), | |
1988 | PROC(READLINK, readlink, readlinkres, 3), | |
1989 | PROC(READ, read, readres, 3), | |
1990 | PROC(WRITE, write, writeres, 4), | |
1991 | PROC(CREATE, create, createres, 0), | |
1992 | PROC(MKDIR, mkdir, createres, 0), | |
1993 | PROC(SYMLINK, symlink, createres, 0), | |
1994 | PROC(MKNOD, mknod, createres, 0), | |
1995 | PROC(REMOVE, remove, removeres, 0), | |
1996 | PROC(RMDIR, lookup, wccstat, 0), | |
1997 | PROC(RENAME, rename, renameres, 0), | |
1998 | PROC(LINK, link, linkres, 0), | |
1999 | PROC(READDIR, readdir, readdirres, 3), | |
2000 | PROC(READDIRPLUS, readdirplus, readdirres, 3), | |
2001 | PROC(FSSTAT, getattr, fsstatres, 0), | |
2002 | PROC(FSINFO, getattr, fsinfores, 0), | |
2003 | PROC(PATHCONF, getattr, pathconfres, 0), | |
2004 | PROC(COMMIT, commit, commitres, 5), | |
1da177e4 LT |
2005 | }; |
2006 | ||
2007 | struct rpc_version nfs_version3 = { | |
2008 | .number = 3, | |
e8c96f8c | 2009 | .nrprocs = ARRAY_SIZE(nfs3_procedures), |
1da177e4 LT |
2010 | .procs = nfs3_procedures |
2011 | }; | |
2012 | ||
b7fa0554 AG |
2013 | #ifdef CONFIG_NFS_V3_ACL |
2014 | static struct rpc_procinfo nfs3_acl_procedures[] = { | |
2015 | [ACLPROC3_GETACL] = { | |
2016 | .p_proc = ACLPROC3_GETACL, | |
ad96b5b5 | 2017 | .p_encode = (kxdrproc_t)nfs3_xdr_enc_getacl3args, |
b7fa0554 | 2018 | .p_decode = (kxdrproc_t) nfs3_xdr_getaclres, |
2bea90d4 CL |
2019 | .p_arglen = ACL3_getaclargs_sz, |
2020 | .p_replen = ACL3_getaclres_sz, | |
b7fa0554 | 2021 | .p_timer = 1, |
cc0175c1 | 2022 | .p_name = "GETACL", |
b7fa0554 AG |
2023 | }, |
2024 | [ACLPROC3_SETACL] = { | |
2025 | .p_proc = ACLPROC3_SETACL, | |
ad96b5b5 | 2026 | .p_encode = (kxdrproc_t)nfs3_xdr_enc_setacl3args, |
b7fa0554 | 2027 | .p_decode = (kxdrproc_t) nfs3_xdr_setaclres, |
2bea90d4 CL |
2028 | .p_arglen = ACL3_setaclargs_sz, |
2029 | .p_replen = ACL3_setaclres_sz, | |
b7fa0554 | 2030 | .p_timer = 0, |
cc0175c1 | 2031 | .p_name = "SETACL", |
b7fa0554 AG |
2032 | }, |
2033 | }; | |
2034 | ||
2035 | struct rpc_version nfsacl_version3 = { | |
2036 | .number = 3, | |
2037 | .nrprocs = sizeof(nfs3_acl_procedures)/ | |
2038 | sizeof(nfs3_acl_procedures[0]), | |
2039 | .procs = nfs3_acl_procedures, | |
2040 | }; | |
2041 | #endif /* CONFIG_NFS_V3_ACL */ |