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Linux/fs/nfsd/nfs3proc.c

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  1 /*
  2  * linux/fs/nfsd/nfs3proc.c
  3  *
  4  * Process version 3 NFS requests.
  5  *
  6  * Copyright (C) 1996, 1997, 1998 Olaf Kirch <okir@monad.swb.de>
  7  */
  8 
  9 #include <linux/linkage.h>
 10 #include <linux/sched.h>
 11 #include <linux/errno.h>
 12 #include <linux/locks.h>
 13 #include <linux/fs.h>
 14 #include <linux/ext2_fs.h>
 15 #include <linux/stat.h>
 16 #include <linux/fcntl.h>
 17 #include <linux/net.h>
 18 #include <linux/in.h>
 19 #include <linux/version.h>
 20 #include <linux/unistd.h>
 21 #include <linux/slab.h>
 22 #include <linux/major.h>
 23 
 24 #include <linux/sunrpc/svc.h>
 25 #include <linux/nfsd/nfsd.h>
 26 #include <linux/nfsd/cache.h>
 27 #include <linux/nfsd/xdr3.h>
 28 #include <linux/nfs3.h>
 29 
 30 #define NFSDDBG_FACILITY                NFSDDBG_PROC
 31 
 32 #define RETURN_STATUS(st)       { resp->status = (st); return (st); }
 33 
 34 static int      nfs3_ftypes[] = {
 35         0,                      /* NF3NON */
 36         S_IFREG,                /* NF3REG */
 37         S_IFDIR,                /* NF3DIR */
 38         S_IFBLK,                /* NF3BLK */
 39         S_IFCHR,                /* NF3CHR */
 40         S_IFLNK,                /* NF3LNK */
 41         S_IFSOCK,               /* NF3SOCK */
 42         S_IFIFO,                /* NF3FIFO */
 43 };
 44 
 45 /*
 46  * Reserve room in the send buffer
 47  */
 48 static void
 49 svcbuf_reserve(struct svc_buf *buf, u32 **ptr, int *len, int nr)
 50 {
 51         *ptr = buf->buf + nr;
 52         *len = buf->buflen - buf->len - nr;
 53 }
 54 
 55 /*
 56  * NULL call.
 57  */
 58 static int
 59 nfsd3_proc_null(struct svc_rqst *rqstp, void *argp, void *resp)
 60 {
 61         return nfs_ok;
 62 }
 63 
 64 /*
 65  * Get a file's attributes
 66  */
 67 static int
 68 nfsd3_proc_getattr(struct svc_rqst *rqstp, struct nfsd_fhandle  *argp,
 69                                            struct nfsd3_attrstat *resp)
 70 {
 71         int     nfserr;
 72 
 73         dprintk("nfsd: GETATTR(3)  %s\n",
 74                                 SVCFH_fmt(&argp->fh));
 75 
 76         fh_copy(&resp->fh, &argp->fh);
 77         nfserr = fh_verify(rqstp, &resp->fh, 0, MAY_NOP);
 78         RETURN_STATUS(nfserr);
 79 }
 80 
 81 /*
 82  * Set a file's attributes
 83  */
 84 static int
 85 nfsd3_proc_setattr(struct svc_rqst *rqstp, struct nfsd3_sattrargs *argp,
 86                                            struct nfsd3_attrstat  *resp)
 87 {
 88         int     nfserr;
 89 
 90         dprintk("nfsd: SETATTR(3)  %s\n",
 91                                 SVCFH_fmt(&argp->fh));
 92 
 93         fh_copy(&resp->fh, &argp->fh);
 94         nfserr = nfsd_setattr(rqstp, &resp->fh, &argp->attrs,
 95                               argp->check_guard, argp->guardtime);
 96         RETURN_STATUS(nfserr);
 97 }
 98 
 99 /*
100  * Look up a path name component
101  */
102 static int
103 nfsd3_proc_lookup(struct svc_rqst *rqstp, struct nfsd3_diropargs *argp,
104                                           struct nfsd3_diropres  *resp)
105 {
106         int     nfserr;
107 
108         dprintk("nfsd: LOOKUP(3)   %s %.*s\n",
109                                 SVCFH_fmt(&argp->fh),
110                                 argp->len,
111                                 argp->name);
112 
113         fh_copy(&resp->dirfh, &argp->fh);
114         fh_init(&resp->fh, NFS3_FHSIZE);
115 
116         nfserr = nfsd_lookup(rqstp, &resp->dirfh,
117                                     argp->name,
118                                     argp->len,
119                                     &resp->fh);
120         RETURN_STATUS(nfserr);
121 }
122 
123 /*
124  * Check file access
125  */
126 static int
127 nfsd3_proc_access(struct svc_rqst *rqstp, struct nfsd3_accessargs *argp,
128                                           struct nfsd3_accessres *resp)
129 {
130         int     nfserr;
131 
132         dprintk("nfsd: ACCESS(3)   %s 0x%x\n",
133                                 SVCFH_fmt(&argp->fh),
134                                 argp->access);
135 
136         fh_copy(&resp->fh, &argp->fh);
137         resp->access = argp->access;
138         nfserr = nfsd_access(rqstp, &resp->fh, &resp->access);
139         RETURN_STATUS(nfserr);
140 }
141 
142 /*
143  * Read a symlink.
144  */
145 static int
146 nfsd3_proc_readlink(struct svc_rqst *rqstp, struct nfsd_fhandle     *argp,
147                                            struct nfsd3_readlinkres *resp)
148 {
149         u32             *path;
150         int             dummy, nfserr;
151 
152         dprintk("nfsd: READLINK(3) %s\n", SVCFH_fmt(&argp->fh));
153 
154         /* Reserve room for status, post_op_attr, and path length */
155         svcbuf_reserve(&rqstp->rq_resbuf, &path, &dummy,
156                                 1 + NFS3_POST_OP_ATTR_WORDS + 1);
157 
158         /* Read the symlink. */
159         fh_copy(&resp->fh, &argp->fh);
160         resp->len = NFS3_MAXPATHLEN;
161         nfserr = nfsd_readlink(rqstp, &resp->fh, (char *) path, &resp->len);
162         RETURN_STATUS(nfserr);
163 }
164 
165 /*
166  * Read a portion of a file.
167  */
168 static int
169 nfsd3_proc_read(struct svc_rqst *rqstp, struct nfsd3_readargs *argp,
170                                         struct nfsd3_readres  *resp)
171 {
172         u32 *   buffer;
173         int     nfserr, avail;
174 
175         dprintk("nfsd: READ(3) %s %lu bytes at %lu\n",
176                                 SVCFH_fmt(&argp->fh),
177                                 (unsigned long) argp->count,
178                                 (unsigned long) argp->offset);
179 
180         /* Obtain buffer pointer for payload.
181          * 1 (status) + 22 (post_op_attr) + 1 (count) + 1 (eof)
182          * + 1 (xdr opaque byte count) = 26
183          */
184         svcbuf_reserve(&rqstp->rq_resbuf, &buffer, &avail,
185                         1 + NFS3_POST_OP_ATTR_WORDS + 3);
186 
187         resp->count = argp->count;
188         if ((avail << 2) < resp->count)
189                 resp->count = avail << 2;
190 
191         svc_reserve(rqstp, ((1 + NFS3_POST_OP_ATTR_WORDS + 3)<<2) + argp->count +4);
192 
193         fh_copy(&resp->fh, &argp->fh);
194         nfserr = nfsd_read(rqstp, &resp->fh,
195                                   argp->offset,
196                                   (char *) buffer,
197                                   &resp->count);
198         if (nfserr == 0) {
199                 struct inode    *inode = resp->fh.fh_dentry->d_inode;
200 
201                 resp->eof = (argp->offset + resp->count) >= inode->i_size;
202         }
203 
204         RETURN_STATUS(nfserr);
205 }
206 
207 /*
208  * Write data to a file
209  */
210 static int
211 nfsd3_proc_write(struct svc_rqst *rqstp, struct nfsd3_writeargs *argp,
212                                          struct nfsd3_writeres  *resp)
213 {
214         int     nfserr;
215 
216         dprintk("nfsd: WRITE(3)    %s %d bytes at %ld%s\n",
217                                 SVCFH_fmt(&argp->fh),
218                                 argp->len,
219                                 (unsigned long) argp->offset,
220                                 argp->stable? " stable" : "");
221 
222         fh_copy(&resp->fh, &argp->fh);
223         resp->committed = argp->stable;
224         nfserr = nfsd_write(rqstp, &resp->fh,
225                                    argp->offset,
226                                    argp->data,
227                                    argp->len,
228                                    &resp->committed);
229         resp->count = argp->count;
230         RETURN_STATUS(nfserr);
231 }
232 
233 /*
234  * With NFSv3, CREATE processing is a lot easier than with NFSv2.
235  * At least in theory; we'll see how it fares in practice when the
236  * first reports about SunOS compatibility problems start to pour in...
237  */
238 static int
239 nfsd3_proc_create(struct svc_rqst *rqstp, struct nfsd3_createargs *argp,
240                                           struct nfsd3_diropres   *resp)
241 {
242         svc_fh          *dirfhp, *newfhp = NULL;
243         struct iattr    *attr;
244         u32             nfserr;
245 
246         dprintk("nfsd: CREATE(3)   %s %.*s\n",
247                                 SVCFH_fmt(&argp->fh),
248                                 argp->len,
249                                 argp->name);
250 
251         dirfhp = fh_copy(&resp->dirfh, &argp->fh);
252         newfhp = fh_init(&resp->fh, NFS3_FHSIZE);
253         attr   = &argp->attrs;
254 
255         /* Get the directory inode */
256         nfserr = fh_verify(rqstp, dirfhp, S_IFDIR, MAY_CREATE);
257         if (nfserr)
258                 RETURN_STATUS(nfserr);
259 
260         /* Unfudge the mode bits */
261         attr->ia_mode &= ~S_IFMT;
262         if (!(attr->ia_valid & ATTR_MODE)) { 
263                 attr->ia_valid |= ATTR_MODE;
264                 attr->ia_mode = S_IFREG;
265         } else {
266                 attr->ia_mode = (attr->ia_mode & ~S_IFMT) | S_IFREG;
267         }
268 
269         /* Now create the file and set attributes */
270         nfserr = nfsd_create_v3(rqstp, dirfhp, argp->name, argp->len,
271                                 attr, newfhp,
272                                 argp->createmode, argp->verf);
273 
274         RETURN_STATUS(nfserr);
275 }
276 
277 /*
278  * Make directory. This operation is not idempotent.
279  */
280 static int
281 nfsd3_proc_mkdir(struct svc_rqst *rqstp, struct nfsd3_createargs *argp,
282                                          struct nfsd3_diropres   *resp)
283 {
284         int     nfserr;
285 
286         dprintk("nfsd: MKDIR(3)    %s %.*s\n",
287                                 SVCFH_fmt(&argp->fh),
288                                 argp->len,
289                                 argp->name);
290 
291         argp->attrs.ia_valid &= ~ATTR_SIZE;
292         fh_copy(&resp->dirfh, &argp->fh);
293         fh_init(&resp->fh, NFS3_FHSIZE);
294         nfserr = nfsd_create(rqstp, &resp->dirfh, argp->name, argp->len,
295                                     &argp->attrs, S_IFDIR, 0, &resp->fh);
296 
297         RETURN_STATUS(nfserr);
298 }
299 
300 static int
301 nfsd3_proc_symlink(struct svc_rqst *rqstp, struct nfsd3_symlinkargs *argp,
302                                            struct nfsd3_diropres    *resp)
303 {
304         int     nfserr;
305 
306         dprintk("nfsd: SYMLINK(3)  %s %.*s -> %.*s\n",
307                                 SVCFH_fmt(&argp->ffh),
308                                 argp->flen, argp->fname,
309                                 argp->tlen, argp->tname);
310 
311         fh_copy(&resp->dirfh, &argp->ffh);
312         fh_init(&resp->fh, NFS3_FHSIZE);
313         nfserr = nfsd_symlink(rqstp, &resp->dirfh, argp->fname, argp->flen,
314                                                    argp->tname, argp->tlen,
315                                                    &resp->fh, &argp->attrs);
316         RETURN_STATUS(nfserr);
317 }
318 
319 /*
320  * Make socket/fifo/device.
321  */
322 static int
323 nfsd3_proc_mknod(struct svc_rqst *rqstp, struct nfsd3_mknodargs *argp,
324                                          struct nfsd3_diropres  *resp)
325 {
326         int     nfserr, type;
327         dev_t   rdev = 0;
328 
329         dprintk("nfsd: MKNOD(3)    %s %.*s\n",
330                                 SVCFH_fmt(&argp->fh),
331                                 argp->len,
332                                 argp->name);
333 
334         fh_copy(&resp->dirfh, &argp->fh);
335         fh_init(&resp->fh, NFS3_FHSIZE);
336 
337         if (argp->ftype == 0 || argp->ftype >= NF3BAD)
338                 RETURN_STATUS(nfserr_inval);
339         if (argp->ftype == NF3CHR || argp->ftype == NF3BLK) {
340                 if ((argp->ftype == NF3CHR && argp->major >= MAX_CHRDEV)
341                     || (argp->ftype == NF3BLK && argp->major >= MAX_BLKDEV)
342                     || argp->minor > 0xFF)
343                         RETURN_STATUS(nfserr_inval);
344                 rdev = MKDEV(argp->major, argp->minor);
345         } else
346                 if (argp->ftype != NF3SOCK && argp->ftype != NF3FIFO)
347                         RETURN_STATUS(nfserr_inval);
348 
349         type = nfs3_ftypes[argp->ftype];
350         nfserr = nfsd_create(rqstp, &resp->dirfh, argp->name, argp->len,
351                                     &argp->attrs, type, rdev, &resp->fh);
352 
353         RETURN_STATUS(nfserr);
354 }
355 
356 /*
357  * Remove file/fifo/socket etc.
358  */
359 static int
360 nfsd3_proc_remove(struct svc_rqst *rqstp, struct nfsd3_diropargs *argp,
361                                           struct nfsd3_attrstat  *resp)
362 {
363         int     nfserr;
364 
365         dprintk("nfsd: REMOVE(3)   %s %.*s\n",
366                                 SVCFH_fmt(&argp->fh),
367                                 argp->len,
368                                 argp->name);
369 
370         /* Unlink. -S_IFDIR means file must not be a directory */
371         fh_copy(&resp->fh, &argp->fh);
372         nfserr = nfsd_unlink(rqstp, &resp->fh, -S_IFDIR, argp->name, argp->len);
373         RETURN_STATUS(nfserr);
374 }
375 
376 /*
377  * Remove a directory
378  */
379 static int
380 nfsd3_proc_rmdir(struct svc_rqst *rqstp, struct nfsd3_diropargs *argp,
381                                          struct nfsd3_attrstat  *resp)
382 {
383         int     nfserr;
384 
385         dprintk("nfsd: RMDIR(3)    %s %.*s\n",
386                                 SVCFH_fmt(&argp->fh),
387                                 argp->len,
388                                 argp->name);
389 
390         fh_copy(&resp->fh, &argp->fh);
391         nfserr = nfsd_unlink(rqstp, &resp->fh, S_IFDIR, argp->name, argp->len);
392         RETURN_STATUS(nfserr);
393 }
394 
395 static int
396 nfsd3_proc_rename(struct svc_rqst *rqstp, struct nfsd3_renameargs *argp,
397                                           struct nfsd3_renameres  *resp)
398 {
399         int     nfserr;
400 
401         dprintk("nfsd: RENAME(3)   %s %.*s ->\n",
402                                 SVCFH_fmt(&argp->ffh),
403                                 argp->flen,
404                                 argp->fname);
405         dprintk("nfsd: -> %s %.*s\n",
406                                 SVCFH_fmt(&argp->tfh),
407                                 argp->tlen,
408                                 argp->tname);
409 
410         fh_copy(&resp->ffh, &argp->ffh);
411         fh_copy(&resp->tfh, &argp->tfh);
412         nfserr = nfsd_rename(rqstp, &resp->ffh, argp->fname, argp->flen,
413                                     &resp->tfh, argp->tname, argp->tlen);
414         RETURN_STATUS(nfserr);
415 }
416 
417 static int
418 nfsd3_proc_link(struct svc_rqst *rqstp, struct nfsd3_linkargs *argp,
419                                         struct nfsd3_linkres  *resp)
420 {
421         int     nfserr;
422 
423         dprintk("nfsd: LINK(3)     %s ->\n",
424                                 SVCFH_fmt(&argp->ffh));
425         dprintk("nfsd:   -> %s %.*s\n",
426                                 SVCFH_fmt(&argp->tfh),
427                                 argp->tlen,
428                                 argp->tname);
429 
430         fh_copy(&resp->fh,  &argp->ffh);
431         fh_copy(&resp->tfh, &argp->tfh);
432         nfserr = nfsd_link(rqstp, &resp->tfh, argp->tname, argp->tlen,
433                                   &resp->fh);
434         RETURN_STATUS(nfserr);
435 }
436 
437 /*
438  * Read a portion of a directory.
439  */
440 static int
441 nfsd3_proc_readdir(struct svc_rqst *rqstp, struct nfsd3_readdirargs *argp,
442                                            struct nfsd3_readdirres  *resp)
443 {
444         u32 *           buffer;
445         int             nfserr, count;
446         unsigned int    want;
447 
448         dprintk("nfsd: READDIR(3)  %s %d bytes at %d\n",
449                                 SVCFH_fmt(&argp->fh),
450                                 argp->count, (u32) argp->cookie);
451 
452         /* Reserve buffer space for status, attributes and verifier */
453         svcbuf_reserve(&rqstp->rq_resbuf, &buffer, &count,
454                                 1 + NFS3_POST_OP_ATTR_WORDS + 2);
455 
456         /* Make sure we've room for the NULL ptr & eof flag, and shrink to
457          * client read size */
458         if ((count -= 2) > (want = (argp->count >> 2) - 2))
459                 count = want;
460 
461         /* Read directory and encode entries on the fly */
462         fh_copy(&resp->fh, &argp->fh);
463         nfserr = nfsd_readdir(rqstp, &resp->fh, (loff_t) argp->cookie, 
464                                         nfs3svc_encode_entry,
465                                         buffer, &count, argp->verf);
466         memcpy(resp->verf, argp->verf, 8);
467         resp->count = count;
468 
469         RETURN_STATUS(nfserr);
470 }
471 
472 /*
473  * Read a portion of a directory, including file handles and attrs.
474  * For now, we choose to ignore the dircount parameter.
475  */
476 static int
477 nfsd3_proc_readdirplus(struct svc_rqst *rqstp, struct nfsd3_readdirargs *argp,
478                                                struct nfsd3_readdirres  *resp)
479 {
480         u32 *   buffer;
481         int     nfserr, count, want;
482 
483         dprintk("nfsd: READDIR+(3) %s %d bytes at %d\n",
484                                 SVCFH_fmt(&argp->fh),
485                                 argp->count, (u32) argp->cookie);
486 
487         /* Reserve buffer space for status, attributes and verifier */
488         svcbuf_reserve(&rqstp->rq_resbuf, &buffer, &count,
489                                 1 + NFS3_POST_OP_ATTR_WORDS + 2);
490 
491         /* Make sure we've room for the NULL ptr & eof flag, and shrink to
492          * client read size */
493         if ((count -= 2) > (want = argp->count >> 2))
494                 count = want;
495 
496         /* Read directory and encode entries on the fly */
497         fh_copy(&resp->fh, &argp->fh);
498         nfserr = nfsd_readdir(rqstp, &resp->fh, (loff_t) argp->cookie, 
499                                         nfs3svc_encode_entry_plus,
500                                         buffer, &count, argp->verf);
501         memcpy(resp->verf, argp->verf, 8);
502         resp->count = count;
503 
504         RETURN_STATUS(nfserr);
505 }
506 
507 /*
508  * Get file system stats
509  */
510 static int
511 nfsd3_proc_fsstat(struct svc_rqst * rqstp, struct nfsd_fhandle    *argp,
512                                            struct nfsd3_fsstatres *resp)
513 {
514         int     nfserr;
515 
516         dprintk("nfsd: FSSTAT(3)   %s\n",
517                                 SVCFH_fmt(&argp->fh));
518 
519         nfserr = nfsd_statfs(rqstp, &argp->fh, &resp->stats);
520         fh_put(&argp->fh);
521         RETURN_STATUS(nfserr);
522 }
523 
524 /*
525  * Get file system info
526  */
527 static int
528 nfsd3_proc_fsinfo(struct svc_rqst * rqstp, struct nfsd_fhandle    *argp,
529                                            struct nfsd3_fsinfores *resp)
530 {
531         int     nfserr;
532 
533         dprintk("nfsd: FSINFO(3)   %s\n",
534                                 SVCFH_fmt(&argp->fh));
535 
536         resp->f_rtmax  = NFSSVC_MAXBLKSIZE;
537         resp->f_rtpref = NFSSVC_MAXBLKSIZE;
538         resp->f_rtmult = PAGE_SIZE;
539         resp->f_wtmax  = NFSSVC_MAXBLKSIZE;
540         resp->f_wtpref = NFSSVC_MAXBLKSIZE;
541         resp->f_wtmult = PAGE_SIZE;
542         resp->f_dtpref = PAGE_SIZE;
543         resp->f_maxfilesize = ~(u32) 0;
544         resp->f_properties = NFS3_FSF_DEFAULT;
545 
546         nfserr = fh_verify(rqstp, &argp->fh, 0, MAY_NOP);
547 
548         /* Check special features of the file system. May request
549          * different read/write sizes for file systems known to have
550          * problems with large blocks */
551         if (nfserr == 0) {
552                 struct super_block *sb = argp->fh.fh_dentry->d_inode->i_sb;
553 
554                 /* Note that we don't care for remote fs's here */
555                 if (sb->s_magic == 0x4d44 /* MSDOS_SUPER_MAGIC */) {
556                         resp->f_properties = NFS3_FSF_BILLYBOY;
557                 }
558                 resp->f_maxfilesize = sb->s_maxbytes;
559         }
560 
561         fh_put(&argp->fh);
562         RETURN_STATUS(nfserr);
563 }
564 
565 /*
566  * Get pathconf info for the specified file
567  */
568 static int
569 nfsd3_proc_pathconf(struct svc_rqst * rqstp, struct nfsd_fhandle      *argp,
570                                              struct nfsd3_pathconfres *resp)
571 {
572         int     nfserr;
573 
574         dprintk("nfsd: PATHCONF(3) %s\n",
575                                 SVCFH_fmt(&argp->fh));
576 
577         /* Set default pathconf */
578         resp->p_link_max = 255;         /* at least */
579         resp->p_name_max = 255;         /* at least */
580         resp->p_no_trunc = 0;
581         resp->p_chown_restricted = 1;
582         resp->p_case_insensitive = 0;
583         resp->p_case_preserving = 1;
584 
585         nfserr = fh_verify(rqstp, &argp->fh, 0, MAY_NOP);
586 
587         if (nfserr == 0) {
588                 struct super_block *sb = argp->fh.fh_dentry->d_inode->i_sb;
589 
590                 /* Note that we don't care for remote fs's here */
591                 switch (sb->s_magic) {
592                 case EXT2_SUPER_MAGIC:
593                         resp->p_link_max = EXT2_LINK_MAX;
594                         resp->p_name_max = EXT2_NAME_LEN;
595                         break;
596                 case 0x4d44:    /* MSDOS_SUPER_MAGIC */
597                         resp->p_case_insensitive = 1;
598                         resp->p_case_preserving  = 0;
599                         break;
600                 }
601         }
602 
603         fh_put(&argp->fh);
604         RETURN_STATUS(nfserr);
605 }
606 
607 
608 /*
609  * Commit a file (range) to stable storage.
610  */
611 static int
612 nfsd3_proc_commit(struct svc_rqst * rqstp, struct nfsd3_commitargs *argp,
613                                            struct nfsd3_commitres  *resp)
614 {
615         int     nfserr;
616 
617         dprintk("nfsd: COMMIT(3)   %s %d@%ld\n",
618                                 SVCFH_fmt(&argp->fh),
619                                 argp->count,
620                                 (unsigned long) argp->offset);
621 
622         if (argp->offset > NFS_OFFSET_MAX)
623                 RETURN_STATUS(nfserr_inval);
624 
625         fh_copy(&resp->fh, &argp->fh);
626         nfserr = nfsd_commit(rqstp, &resp->fh, argp->offset, argp->count);
627 
628         RETURN_STATUS(nfserr);
629 }
630 
631 
632 /*
633  * NFSv3 Server procedures.
634  * Only the results of non-idempotent operations are cached.
635  */
636 #define nfs3svc_decode_voidargs         NULL
637 #define nfs3svc_release_void            NULL
638 #define nfs3svc_decode_fhandleargs      nfs3svc_decode_fhandle
639 #define nfs3svc_encode_attrstatres      nfs3svc_encode_attrstat
640 #define nfs3svc_encode_wccstatres       nfs3svc_encode_wccstat
641 #define nfsd3_mkdirargs                 nfsd3_createargs
642 #define nfsd3_readdirplusargs           nfsd3_readdirargs
643 #define nfsd3_fhandleargs               nfsd_fhandle
644 #define nfsd3_fhandleres                nfsd3_attrstat
645 #define nfsd3_attrstatres               nfsd3_attrstat
646 #define nfsd3_wccstatres                nfsd3_attrstat
647 #define nfsd3_createres                 nfsd3_diropres
648 #define nfsd3_voidres                   nfsd3_voidargs
649 struct nfsd3_voidargs { int dummy; };
650 
651 #define PROC(name, argt, rest, relt, cache, respsize)   \
652  { (svc_procfunc) nfsd3_proc_##name,            \
653    (kxdrproc_t) nfs3svc_decode_##argt##args,    \
654    (kxdrproc_t) nfs3svc_encode_##rest##res,     \
655    (kxdrproc_t) nfs3svc_release_##relt,         \
656    sizeof(struct nfsd3_##argt##args),           \
657    sizeof(struct nfsd3_##rest##res),            \
658    0,                                           \
659    cache,                                       \
660    respsize,                                    \
661  }
662 
663 #define ST 1            /* status*/
664 #define FH 17           /* filehandle with length */
665 #define AT 21           /* attributes */
666 #define pAT (1+AT)      /* post attributes - conditional */
667 #define WC (7+pAT)      /* WCC attributes */
668 
669 struct svc_procedure            nfsd_procedures3[22] = {
670   PROC(null,     void,          void,           void,    RC_NOCACHE, ST),
671   PROC(getattr,  fhandle,       attrstat,       fhandle, RC_NOCACHE, ST+AT),
672   PROC(setattr,  sattr,         wccstat,        fhandle,  RC_REPLBUFF, ST+WC),
673   PROC(lookup,   dirop,         dirop,          fhandle2, RC_NOCACHE, ST+FH+pAT+pAT),
674   PROC(access,   access,        access,         fhandle,  RC_NOCACHE, ST+pAT+1),
675   PROC(readlink, fhandle,       readlink,       fhandle,  RC_NOCACHE, ST+pAT+1+NFS3_MAXPATHLEN/4),
676   PROC(read,     read,          read,           fhandle, RC_NOCACHE, ST+pAT+4+NFSSVC_MAXBLKSIZE),
677   PROC(write,    write,         write,          fhandle,  RC_REPLBUFF, ST+WC+4),
678   PROC(create,   create,        create,         fhandle2, RC_REPLBUFF, ST+(1+FH+pAT)+WC),
679   PROC(mkdir,    mkdir,         create,         fhandle2, RC_REPLBUFF, ST+(1+FH+pAT)+WC),
680   PROC(symlink,  symlink,       create,         fhandle2, RC_REPLBUFF, ST+(1+FH+pAT)+WC),
681   PROC(mknod,    mknod,         create,         fhandle2, RC_REPLBUFF, ST+(1+FH+pAT)+WC),
682   PROC(remove,   dirop,         wccstat,        fhandle,  RC_REPLBUFF, ST+WC),
683   PROC(rmdir,    dirop,         wccstat,        fhandle,  RC_REPLBUFF, ST+WC),
684   PROC(rename,   rename,        rename,         fhandle2, RC_REPLBUFF, ST+WC+WC),
685   PROC(link,     link,          link,           fhandle2, RC_REPLBUFF, ST+pAT+WC),
686   PROC(readdir,  readdir,       readdir,        fhandle,  RC_NOCACHE, 0),
687   PROC(readdirplus,readdirplus, readdir,        fhandle,  RC_NOCACHE, 0),
688   PROC(fsstat,   fhandle,       fsstat,         void,     RC_NOCACHE, ST+pAT+2*6+1),
689   PROC(fsinfo,   fhandle,       fsinfo,         void,     RC_NOCACHE, ST+pAT+12),
690   PROC(pathconf, fhandle,       pathconf,       void,     RC_NOCACHE, ST+pAT+6),
691   PROC(commit,   commit,        commit,         fhandle,  RC_NOCACHE, ST+WC+2),
692 };
693 

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