1 /* $NetBSD: nfs_nfsdsubs.c,v 1.4 2016/12/13 21:50:32 pgoyette Exp $ */
2 /*-
3 * Copyright (c) 1989, 1993
4 * The Regents of the University of California. All rights reserved.
5 *
6 * This code is derived from software contributed to Berkeley by
7 * Rick Macklem at The University of Guelph.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 *
33 */
34
35 #include <sys/cdefs.h>
36 /* __FBSDID("FreeBSD: head/sys/fs/nfsserver/nfs_nfsdsubs.c 298523 2016-04-23 21:18:45Z rmacklem "); */
37 __RCSID("$NetBSD: nfs_nfsdsubs.c,v 1.4 2016/12/13 21:50:32 pgoyette Exp $");
38
39 #ifndef APPLEKEXT
40
41 #ifdef _KERNEL_OPT
42 #include "opt_newnfs.h"
43 #endif
44
45 /*
46 * These functions support the macros and help fiddle mbuf chains for
47 * the nfs op functions. They do things like create the rpc header and
48 * copy data between mbuf chains and uio lists.
49 */
50 #include <fs/nfs/common/nfsport.h>
51
52 extern u_int32_t newnfs_true, newnfs_false;
53 extern int nfs_pubfhset;
54 extern struct nfsclienthashhead *nfsclienthash;
55 extern int nfsrv_clienthashsize;
56 extern struct nfslockhashhead *nfslockhash;
57 extern int nfsrv_lockhashsize;
58 extern struct nfssessionhash *nfssessionhash;
59 extern int nfsrv_sessionhashsize;
60 extern int nfsrv_useacl;
61 extern uid_t nfsrv_defaultuid;
62 extern gid_t nfsrv_defaultgid;
63
64 char nfs_v2pubfh[NFSX_V2FH];
65 static nfstype newnfsv2_type[9] = { NFNON, NFREG, NFDIR, NFBLK, NFCHR, NFLNK,
66 NFNON, NFCHR, NFNON };
67 extern nfstype nfsv34_type[9];
68 #endif /* !APPLEKEXT */
69
70 static u_int32_t nfsrv_isannfserr(u_int32_t);
71
72 SYSCTL_DECL(_vfs_nfsd);
73
74 static int enable_checkutf8 = 1;
75 SYSCTL_INT(_vfs_nfsd, OID_AUTO, enable_checkutf8, CTLFLAG_RW,
76 &enable_checkutf8, 0,
77 "Enable the NFSv4 check for the UTF8 compliant name required by rfc3530");
78
79 static int enable_nobodycheck = 1;
80 SYSCTL_INT(_vfs_nfsd, OID_AUTO, enable_nobodycheck, CTLFLAG_RW,
81 &enable_nobodycheck, 0,
82 "Enable the NFSv4 check when setting user nobody as owner");
83
84 static int enable_nogroupcheck = 1;
85 SYSCTL_INT(_vfs_nfsd, OID_AUTO, enable_nogroupcheck, CTLFLAG_RW,
86 &enable_nogroupcheck, 0,
87 "Enable the NFSv4 check when setting group nogroup as owner");
88
89 static char nfsrv_hexdigit(char, int *);
90
91 /*
92 * Maps errno values to nfs error numbers.
93 * Use NFSERR_IO as the catch all for ones not specifically defined in
94 * RFC 1094. (It now includes the errors added for NFSv3.)
95 */
96 static u_char nfsrv_v2errmap[NFSERR_REMOTE] = {
97 NFSERR_PERM, NFSERR_NOENT, NFSERR_IO, NFSERR_IO, NFSERR_IO,
98 NFSERR_NXIO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO,
99 NFSERR_IO, NFSERR_IO, NFSERR_ACCES, NFSERR_IO, NFSERR_IO,
100 NFSERR_IO, NFSERR_EXIST, NFSERR_XDEV, NFSERR_NODEV, NFSERR_NOTDIR,
101 NFSERR_ISDIR, NFSERR_INVAL, NFSERR_IO, NFSERR_IO, NFSERR_IO,
102 NFSERR_IO, NFSERR_FBIG, NFSERR_NOSPC, NFSERR_IO, NFSERR_ROFS,
103 NFSERR_MLINK, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO,
104 NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO,
105 NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO,
106 NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO,
107 NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO,
108 NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO,
109 NFSERR_IO, NFSERR_IO, NFSERR_NAMETOL, NFSERR_IO, NFSERR_IO,
110 NFSERR_NOTEMPTY, NFSERR_IO, NFSERR_IO, NFSERR_DQUOT, NFSERR_STALE,
111 NFSERR_REMOTE,
112 };
113
114 /*
115 * Maps errno values to nfs error numbers.
116 * Although it is not obvious whether or not NFS clients really care if
117 * a returned error value is in the specified list for the procedure, the
118 * safest thing to do is filter them appropriately. For Version 2, the
119 * X/Open XNFS document is the only specification that defines error values
120 * for each RPC (The RFC simply lists all possible error values for all RPCs),
121 * so I have decided to not do this for Version 2.
122 * The first entry is the default error return and the rest are the valid
123 * errors for that RPC in increasing numeric order.
124 */
125 static short nfsv3err_null[] = {
126 0,
127 0,
128 };
129
130 static short nfsv3err_getattr[] = {
131 NFSERR_IO,
132 NFSERR_IO,
133 NFSERR_STALE,
134 NFSERR_BADHANDLE,
135 NFSERR_SERVERFAULT,
136 NFSERR_DELAY,
137 0,
138 };
139
140 static short nfsv3err_setattr[] = {
141 NFSERR_IO,
142 NFSERR_ACCES,
143 NFSERR_PERM,
144 NFSERR_IO,
145 NFSERR_INVAL,
146 NFSERR_NOSPC,
147 NFSERR_ROFS,
148 NFSERR_DQUOT,
149 NFSERR_STALE,
150 NFSERR_BADHANDLE,
151 NFSERR_NOT_SYNC,
152 NFSERR_SERVERFAULT,
153 NFSERR_DELAY,
154 0,
155 };
156
157 static short nfsv3err_lookup[] = {
158 NFSERR_IO,
159 NFSERR_NOENT,
160 NFSERR_ACCES,
161 NFSERR_NAMETOL,
162 NFSERR_IO,
163 NFSERR_NOTDIR,
164 NFSERR_STALE,
165 NFSERR_BADHANDLE,
166 NFSERR_SERVERFAULT,
167 NFSERR_DELAY,
168 0,
169 };
170
171 static short nfsv3err_access[] = {
172 NFSERR_IO,
173 NFSERR_IO,
174 NFSERR_STALE,
175 NFSERR_BADHANDLE,
176 NFSERR_SERVERFAULT,
177 NFSERR_DELAY,
178 0,
179 };
180
181 static short nfsv3err_readlink[] = {
182 NFSERR_IO,
183 NFSERR_IO,
184 NFSERR_ACCES,
185 NFSERR_INVAL,
186 NFSERR_STALE,
187 NFSERR_BADHANDLE,
188 NFSERR_NOTSUPP,
189 NFSERR_SERVERFAULT,
190 NFSERR_DELAY,
191 0,
192 };
193
194 static short nfsv3err_read[] = {
195 NFSERR_IO,
196 NFSERR_IO,
197 NFSERR_NXIO,
198 NFSERR_ACCES,
199 NFSERR_INVAL,
200 NFSERR_STALE,
201 NFSERR_BADHANDLE,
202 NFSERR_SERVERFAULT,
203 NFSERR_DELAY,
204 0,
205 };
206
207 static short nfsv3err_write[] = {
208 NFSERR_IO,
209 NFSERR_IO,
210 NFSERR_ACCES,
211 NFSERR_NOSPC,
212 NFSERR_INVAL,
213 NFSERR_FBIG,
214 NFSERR_ROFS,
215 NFSERR_DQUOT,
216 NFSERR_STALE,
217 NFSERR_BADHANDLE,
218 NFSERR_SERVERFAULT,
219 NFSERR_DELAY,
220 0,
221 };
222
223 static short nfsv3err_create[] = {
224 NFSERR_IO,
225 NFSERR_EXIST,
226 NFSERR_NAMETOL,
227 NFSERR_ACCES,
228 NFSERR_IO,
229 NFSERR_NOTDIR,
230 NFSERR_NOSPC,
231 NFSERR_ROFS,
232 NFSERR_DQUOT,
233 NFSERR_STALE,
234 NFSERR_BADHANDLE,
235 NFSERR_NOTSUPP,
236 NFSERR_SERVERFAULT,
237 NFSERR_DELAY,
238 0,
239 };
240
241 static short nfsv3err_mkdir[] = {
242 NFSERR_IO,
243 NFSERR_EXIST,
244 NFSERR_ACCES,
245 NFSERR_NAMETOL,
246 NFSERR_IO,
247 NFSERR_NOTDIR,
248 NFSERR_NOSPC,
249 NFSERR_ROFS,
250 NFSERR_DQUOT,
251 NFSERR_STALE,
252 NFSERR_BADHANDLE,
253 NFSERR_NOTSUPP,
254 NFSERR_SERVERFAULT,
255 NFSERR_DELAY,
256 0,
257 };
258
259 static short nfsv3err_symlink[] = {
260 NFSERR_IO,
261 NFSERR_ACCES,
262 NFSERR_EXIST,
263 NFSERR_NAMETOL,
264 NFSERR_NOSPC,
265 NFSERR_IO,
266 NFSERR_NOTDIR,
267 NFSERR_ROFS,
268 NFSERR_DQUOT,
269 NFSERR_STALE,
270 NFSERR_BADHANDLE,
271 NFSERR_NOTSUPP,
272 NFSERR_SERVERFAULT,
273 NFSERR_DELAY,
274 0,
275 };
276
277 static short nfsv3err_mknod[] = {
278 NFSERR_IO,
279 NFSERR_ACCES,
280 NFSERR_EXIST,
281 NFSERR_NAMETOL,
282 NFSERR_NOSPC,
283 NFSERR_IO,
284 NFSERR_NOTDIR,
285 NFSERR_ROFS,
286 NFSERR_DQUOT,
287 NFSERR_STALE,
288 NFSERR_BADHANDLE,
289 NFSERR_NOTSUPP,
290 NFSERR_SERVERFAULT,
291 NFSERR_DELAY,
292 NFSERR_BADTYPE,
293 0,
294 };
295
296 static short nfsv3err_remove[] = {
297 NFSERR_IO,
298 NFSERR_NOENT,
299 NFSERR_ACCES,
300 NFSERR_NAMETOL,
301 NFSERR_IO,
302 NFSERR_NOTDIR,
303 NFSERR_ROFS,
304 NFSERR_STALE,
305 NFSERR_BADHANDLE,
306 NFSERR_SERVERFAULT,
307 NFSERR_DELAY,
308 0,
309 };
310
311 static short nfsv3err_rmdir[] = {
312 NFSERR_IO,
313 NFSERR_NOENT,
314 NFSERR_ACCES,
315 NFSERR_NOTDIR,
316 NFSERR_NAMETOL,
317 NFSERR_IO,
318 NFSERR_EXIST,
319 NFSERR_INVAL,
320 NFSERR_ROFS,
321 NFSERR_NOTEMPTY,
322 NFSERR_STALE,
323 NFSERR_BADHANDLE,
324 NFSERR_NOTSUPP,
325 NFSERR_SERVERFAULT,
326 NFSERR_DELAY,
327 0,
328 };
329
330 static short nfsv3err_rename[] = {
331 NFSERR_IO,
332 NFSERR_NOENT,
333 NFSERR_ACCES,
334 NFSERR_EXIST,
335 NFSERR_NAMETOL,
336 NFSERR_XDEV,
337 NFSERR_IO,
338 NFSERR_NOTDIR,
339 NFSERR_ISDIR,
340 NFSERR_INVAL,
341 NFSERR_NOSPC,
342 NFSERR_ROFS,
343 NFSERR_MLINK,
344 NFSERR_NOTEMPTY,
345 NFSERR_DQUOT,
346 NFSERR_STALE,
347 NFSERR_BADHANDLE,
348 NFSERR_NOTSUPP,
349 NFSERR_SERVERFAULT,
350 NFSERR_DELAY,
351 0,
352 };
353
354 static short nfsv3err_link[] = {
355 NFSERR_IO,
356 NFSERR_ACCES,
357 NFSERR_EXIST,
358 NFSERR_NAMETOL,
359 NFSERR_IO,
360 NFSERR_XDEV,
361 NFSERR_NOTDIR,
362 NFSERR_INVAL,
363 NFSERR_NOSPC,
364 NFSERR_ROFS,
365 NFSERR_MLINK,
366 NFSERR_DQUOT,
367 NFSERR_STALE,
368 NFSERR_BADHANDLE,
369 NFSERR_NOTSUPP,
370 NFSERR_SERVERFAULT,
371 NFSERR_DELAY,
372 0,
373 };
374
375 static short nfsv3err_readdir[] = {
376 NFSERR_IO,
377 NFSERR_ACCES,
378 NFSERR_NOTDIR,
379 NFSERR_IO,
380 NFSERR_STALE,
381 NFSERR_BADHANDLE,
382 NFSERR_BAD_COOKIE,
383 NFSERR_TOOSMALL,
384 NFSERR_SERVERFAULT,
385 NFSERR_DELAY,
386 0,
387 };
388
389 static short nfsv3err_readdirplus[] = {
390 NFSERR_IO,
391 NFSERR_ACCES,
392 NFSERR_NOTDIR,
393 NFSERR_IO,
394 NFSERR_STALE,
395 NFSERR_BADHANDLE,
396 NFSERR_BAD_COOKIE,
397 NFSERR_NOTSUPP,
398 NFSERR_TOOSMALL,
399 NFSERR_SERVERFAULT,
400 NFSERR_DELAY,
401 0,
402 };
403
404 static short nfsv3err_fsstat[] = {
405 NFSERR_IO,
406 NFSERR_IO,
407 NFSERR_STALE,
408 NFSERR_BADHANDLE,
409 NFSERR_SERVERFAULT,
410 NFSERR_DELAY,
411 0,
412 };
413
414 static short nfsv3err_fsinfo[] = {
415 NFSERR_STALE,
416 NFSERR_STALE,
417 NFSERR_BADHANDLE,
418 NFSERR_SERVERFAULT,
419 NFSERR_DELAY,
420 0,
421 };
422
423 static short nfsv3err_pathconf[] = {
424 NFSERR_STALE,
425 NFSERR_STALE,
426 NFSERR_BADHANDLE,
427 NFSERR_SERVERFAULT,
428 NFSERR_DELAY,
429 0,
430 };
431
432 static short nfsv3err_commit[] = {
433 NFSERR_IO,
434 NFSERR_IO,
435 NFSERR_STALE,
436 NFSERR_BADHANDLE,
437 NFSERR_SERVERFAULT,
438 NFSERR_DELAY,
439 0,
440 };
441
442 static short *nfsrv_v3errmap[] = {
443 nfsv3err_null,
444 nfsv3err_getattr,
445 nfsv3err_setattr,
446 nfsv3err_lookup,
447 nfsv3err_access,
448 nfsv3err_readlink,
449 nfsv3err_read,
450 nfsv3err_write,
451 nfsv3err_create,
452 nfsv3err_mkdir,
453 nfsv3err_symlink,
454 nfsv3err_mknod,
455 nfsv3err_remove,
456 nfsv3err_rmdir,
457 nfsv3err_rename,
458 nfsv3err_link,
459 nfsv3err_readdir,
460 nfsv3err_readdirplus,
461 nfsv3err_fsstat,
462 nfsv3err_fsinfo,
463 nfsv3err_pathconf,
464 nfsv3err_commit,
465 };
466
467 /*
468 * And the same for V4.
469 */
470 static short nfsv4err_null[] = {
471 0,
472 0,
473 };
474
475 static short nfsv4err_access[] = {
476 NFSERR_IO,
477 NFSERR_ACCES,
478 NFSERR_BADHANDLE,
479 NFSERR_BADXDR,
480 NFSERR_DELAY,
481 NFSERR_FHEXPIRED,
482 NFSERR_INVAL,
483 NFSERR_IO,
484 NFSERR_MOVED,
485 NFSERR_NOFILEHANDLE,
486 NFSERR_RESOURCE,
487 NFSERR_SERVERFAULT,
488 NFSERR_STALE,
489 0,
490 };
491
492 static short nfsv4err_close[] = {
493 NFSERR_EXPIRED,
494 NFSERR_ADMINREVOKED,
495 NFSERR_BADHANDLE,
496 NFSERR_BADSEQID,
497 NFSERR_BADSTATEID,
498 NFSERR_BADXDR,
499 NFSERR_DELAY,
500 NFSERR_EXPIRED,
501 NFSERR_FHEXPIRED,
502 NFSERR_INVAL,
503 NFSERR_ISDIR,
504 NFSERR_LEASEMOVED,
505 NFSERR_LOCKSHELD,
506 NFSERR_MOVED,
507 NFSERR_NOFILEHANDLE,
508 NFSERR_OLDSTATEID,
509 NFSERR_RESOURCE,
510 NFSERR_SERVERFAULT,
511 NFSERR_STALE,
512 NFSERR_STALESTATEID,
513 0,
514 };
515
516 static short nfsv4err_commit[] = {
517 NFSERR_IO,
518 NFSERR_ACCES,
519 NFSERR_BADHANDLE,
520 NFSERR_BADXDR,
521 NFSERR_FHEXPIRED,
522 NFSERR_INVAL,
523 NFSERR_IO,
524 NFSERR_ISDIR,
525 NFSERR_MOVED,
526 NFSERR_NOFILEHANDLE,
527 NFSERR_RESOURCE,
528 NFSERR_ROFS,
529 NFSERR_SERVERFAULT,
530 NFSERR_STALE,
531 0,
532 };
533
534 static short nfsv4err_create[] = {
535 NFSERR_IO,
536 NFSERR_ACCES,
537 NFSERR_ATTRNOTSUPP,
538 NFSERR_BADCHAR,
539 NFSERR_BADHANDLE,
540 NFSERR_BADNAME,
541 NFSERR_BADOWNER,
542 NFSERR_BADTYPE,
543 NFSERR_BADXDR,
544 NFSERR_DELAY,
545 NFSERR_DQUOT,
546 NFSERR_EXIST,
547 NFSERR_FHEXPIRED,
548 NFSERR_INVAL,
549 NFSERR_IO,
550 NFSERR_MOVED,
551 NFSERR_NAMETOL,
552 NFSERR_NOFILEHANDLE,
553 NFSERR_NOSPC,
554 NFSERR_NOTDIR,
555 NFSERR_PERM,
556 NFSERR_RESOURCE,
557 NFSERR_ROFS,
558 NFSERR_SERVERFAULT,
559 NFSERR_STALE,
560 0,
561 };
562
563 static short nfsv4err_delegpurge[] = {
564 NFSERR_SERVERFAULT,
565 NFSERR_BADXDR,
566 NFSERR_NOTSUPP,
567 NFSERR_LEASEMOVED,
568 NFSERR_MOVED,
569 NFSERR_RESOURCE,
570 NFSERR_SERVERFAULT,
571 NFSERR_STALECLIENTID,
572 0,
573 };
574
575 static short nfsv4err_delegreturn[] = {
576 NFSERR_SERVERFAULT,
577 NFSERR_ADMINREVOKED,
578 NFSERR_BADSTATEID,
579 NFSERR_BADXDR,
580 NFSERR_EXPIRED,
581 NFSERR_INVAL,
582 NFSERR_LEASEMOVED,
583 NFSERR_MOVED,
584 NFSERR_NOFILEHANDLE,
585 NFSERR_NOTSUPP,
586 NFSERR_OLDSTATEID,
587 NFSERR_RESOURCE,
588 NFSERR_SERVERFAULT,
589 NFSERR_STALE,
590 NFSERR_STALESTATEID,
591 0,
592 };
593
594 static short nfsv4err_getattr[] = {
595 NFSERR_IO,
596 NFSERR_ACCES,
597 NFSERR_BADHANDLE,
598 NFSERR_BADXDR,
599 NFSERR_DELAY,
600 NFSERR_FHEXPIRED,
601 NFSERR_INVAL,
602 NFSERR_IO,
603 NFSERR_MOVED,
604 NFSERR_NOFILEHANDLE,
605 NFSERR_RESOURCE,
606 NFSERR_SERVERFAULT,
607 NFSERR_STALE,
608 0,
609 };
610
611 static short nfsv4err_getfh[] = {
612 NFSERR_BADHANDLE,
613 NFSERR_BADHANDLE,
614 NFSERR_FHEXPIRED,
615 NFSERR_MOVED,
616 NFSERR_NOFILEHANDLE,
617 NFSERR_RESOURCE,
618 NFSERR_SERVERFAULT,
619 NFSERR_STALE,
620 0,
621 };
622
623 static short nfsv4err_link[] = {
624 NFSERR_IO,
625 NFSERR_ACCES,
626 NFSERR_BADCHAR,
627 NFSERR_BADHANDLE,
628 NFSERR_BADNAME,
629 NFSERR_BADXDR,
630 NFSERR_DELAY,
631 NFSERR_DQUOT,
632 NFSERR_EXIST,
633 NFSERR_FHEXPIRED,
634 NFSERR_FILEOPEN,
635 NFSERR_INVAL,
636 NFSERR_IO,
637 NFSERR_ISDIR,
638 NFSERR_MLINK,
639 NFSERR_MOVED,
640 NFSERR_NAMETOL,
641 NFSERR_NOENT,
642 NFSERR_NOFILEHANDLE,
643 NFSERR_NOSPC,
644 NFSERR_NOTDIR,
645 NFSERR_NOTSUPP,
646 NFSERR_RESOURCE,
647 NFSERR_ROFS,
648 NFSERR_SERVERFAULT,
649 NFSERR_STALE,
650 NFSERR_WRONGSEC,
651 NFSERR_XDEV,
652 0,
653 };
654
655 static short nfsv4err_lock[] = {
656 NFSERR_SERVERFAULT,
657 NFSERR_ACCES,
658 NFSERR_ADMINREVOKED,
659 NFSERR_BADHANDLE,
660 NFSERR_BADRANGE,
661 NFSERR_BADSEQID,
662 NFSERR_BADSTATEID,
663 NFSERR_BADXDR,
664 NFSERR_DEADLOCK,
665 NFSERR_DELAY,
666 NFSERR_DENIED,
667 NFSERR_EXPIRED,
668 NFSERR_FHEXPIRED,
669 NFSERR_GRACE,
670 NFSERR_INVAL,
671 NFSERR_ISDIR,
672 NFSERR_LEASEMOVED,
673 NFSERR_LOCKNOTSUPP,
674 NFSERR_LOCKRANGE,
675 NFSERR_MOVED,
676 NFSERR_NOFILEHANDLE,
677 NFSERR_NOGRACE,
678 NFSERR_OLDSTATEID,
679 NFSERR_OPENMODE,
680 NFSERR_RECLAIMBAD,
681 NFSERR_RECLAIMCONFLICT,
682 NFSERR_RESOURCE,
683 NFSERR_SERVERFAULT,
684 NFSERR_STALE,
685 NFSERR_STALECLIENTID,
686 NFSERR_STALESTATEID,
687 0,
688 };
689
690 static short nfsv4err_lockt[] = {
691 NFSERR_SERVERFAULT,
692 NFSERR_ACCES,
693 NFSERR_BADHANDLE,
694 NFSERR_BADRANGE,
695 NFSERR_BADXDR,
696 NFSERR_DELAY,
697 NFSERR_DENIED,
698 NFSERR_FHEXPIRED,
699 NFSERR_GRACE,
700 NFSERR_INVAL,
701 NFSERR_ISDIR,
702 NFSERR_LEASEMOVED,
703 NFSERR_LOCKRANGE,
704 NFSERR_MOVED,
705 NFSERR_NOFILEHANDLE,
706 NFSERR_RESOURCE,
707 NFSERR_SERVERFAULT,
708 NFSERR_STALE,
709 NFSERR_STALECLIENTID,
710 0,
711 };
712
713 static short nfsv4err_locku[] = {
714 NFSERR_SERVERFAULT,
715 NFSERR_ACCES,
716 NFSERR_ADMINREVOKED,
717 NFSERR_BADHANDLE,
718 NFSERR_BADRANGE,
719 NFSERR_BADSEQID,
720 NFSERR_BADSTATEID,
721 NFSERR_BADXDR,
722 NFSERR_EXPIRED,
723 NFSERR_FHEXPIRED,
724 NFSERR_GRACE,
725 NFSERR_INVAL,
726 NFSERR_ISDIR,
727 NFSERR_LEASEMOVED,
728 NFSERR_LOCKRANGE,
729 NFSERR_MOVED,
730 NFSERR_NOFILEHANDLE,
731 NFSERR_OLDSTATEID,
732 NFSERR_RESOURCE,
733 NFSERR_SERVERFAULT,
734 NFSERR_STALE,
735 NFSERR_STALESTATEID,
736 0,
737 };
738
739 static short nfsv4err_lookup[] = {
740 NFSERR_IO,
741 NFSERR_ACCES,
742 NFSERR_BADCHAR,
743 NFSERR_BADHANDLE,
744 NFSERR_BADNAME,
745 NFSERR_BADXDR,
746 NFSERR_FHEXPIRED,
747 NFSERR_INVAL,
748 NFSERR_IO,
749 NFSERR_MOVED,
750 NFSERR_NAMETOL,
751 NFSERR_NOENT,
752 NFSERR_NOFILEHANDLE,
753 NFSERR_NOTDIR,
754 NFSERR_RESOURCE,
755 NFSERR_SERVERFAULT,
756 NFSERR_STALE,
757 NFSERR_SYMLINK,
758 NFSERR_WRONGSEC,
759 0,
760 };
761
762 static short nfsv4err_lookupp[] = {
763 NFSERR_IO,
764 NFSERR_ACCES,
765 NFSERR_BADHANDLE,
766 NFSERR_FHEXPIRED,
767 NFSERR_IO,
768 NFSERR_MOVED,
769 NFSERR_NOENT,
770 NFSERR_NOFILEHANDLE,
771 NFSERR_NOTDIR,
772 NFSERR_RESOURCE,
773 NFSERR_SERVERFAULT,
774 NFSERR_STALE,
775 0,
776 };
777
778 static short nfsv4err_nverify[] = {
779 NFSERR_IO,
780 NFSERR_ACCES,
781 NFSERR_ATTRNOTSUPP,
782 NFSERR_BADCHAR,
783 NFSERR_BADHANDLE,
784 NFSERR_BADXDR,
785 NFSERR_DELAY,
786 NFSERR_FHEXPIRED,
787 NFSERR_INVAL,
788 NFSERR_IO,
789 NFSERR_MOVED,
790 NFSERR_NOFILEHANDLE,
791 NFSERR_RESOURCE,
792 NFSERR_SAME,
793 NFSERR_SERVERFAULT,
794 NFSERR_STALE,
795 0,
796 };
797
798 static short nfsv4err_open[] = {
799 NFSERR_IO,
800 NFSERR_ACCES,
801 NFSERR_ADMINREVOKED,
802 NFSERR_ATTRNOTSUPP,
803 NFSERR_BADCHAR,
804 NFSERR_BADHANDLE,
805 NFSERR_BADNAME,
806 NFSERR_BADOWNER,
807 NFSERR_BADSEQID,
808 NFSERR_BADXDR,
809 NFSERR_DELAY,
810 NFSERR_DQUOT,
811 NFSERR_EXIST,
812 NFSERR_EXPIRED,
813 NFSERR_FHEXPIRED,
814 NFSERR_GRACE,
815 NFSERR_IO,
816 NFSERR_INVAL,
817 NFSERR_ISDIR,
818 NFSERR_LEASEMOVED,
819 NFSERR_MOVED,
820 NFSERR_NAMETOL,
821 NFSERR_NOENT,
822 NFSERR_NOFILEHANDLE,
823 NFSERR_NOGRACE,
824 NFSERR_NOSPC,
825 NFSERR_NOTDIR,
826 NFSERR_NOTSUPP,
827 NFSERR_PERM,
828 NFSERR_RECLAIMBAD,
829 NFSERR_RECLAIMCONFLICT,
830 NFSERR_RESOURCE,
831 NFSERR_ROFS,
832 NFSERR_SERVERFAULT,
833 NFSERR_SHAREDENIED,
834 NFSERR_STALE,
835 NFSERR_STALECLIENTID,
836 NFSERR_SYMLINK,
837 NFSERR_WRONGSEC,
838 0,
839 };
840
841 static short nfsv4err_openattr[] = {
842 NFSERR_IO,
843 NFSERR_ACCES,
844 NFSERR_BADHANDLE,
845 NFSERR_BADXDR,
846 NFSERR_DELAY,
847 NFSERR_DQUOT,
848 NFSERR_FHEXPIRED,
849 NFSERR_IO,
850 NFSERR_MOVED,
851 NFSERR_NOENT,
852 NFSERR_NOFILEHANDLE,
853 NFSERR_NOSPC,
854 NFSERR_NOTSUPP,
855 NFSERR_RESOURCE,
856 NFSERR_ROFS,
857 NFSERR_SERVERFAULT,
858 NFSERR_STALE,
859 0,
860 };
861
862 static short nfsv4err_openconfirm[] = {
863 NFSERR_SERVERFAULT,
864 NFSERR_ADMINREVOKED,
865 NFSERR_BADHANDLE,
866 NFSERR_BADSEQID,
867 NFSERR_BADSTATEID,
868 NFSERR_BADXDR,
869 NFSERR_EXPIRED,
870 NFSERR_FHEXPIRED,
871 NFSERR_INVAL,
872 NFSERR_ISDIR,
873 NFSERR_MOVED,
874 NFSERR_NOFILEHANDLE,
875 NFSERR_OLDSTATEID,
876 NFSERR_RESOURCE,
877 NFSERR_SERVERFAULT,
878 NFSERR_STALE,
879 NFSERR_STALESTATEID,
880 0,
881 };
882
883 static short nfsv4err_opendowngrade[] = {
884 NFSERR_SERVERFAULT,
885 NFSERR_ADMINREVOKED,
886 NFSERR_BADHANDLE,
887 NFSERR_BADSEQID,
888 NFSERR_BADSTATEID,
889 NFSERR_BADXDR,
890 NFSERR_EXPIRED,
891 NFSERR_FHEXPIRED,
892 NFSERR_INVAL,
893 NFSERR_MOVED,
894 NFSERR_NOFILEHANDLE,
895 NFSERR_OLDSTATEID,
896 NFSERR_RESOURCE,
897 NFSERR_SERVERFAULT,
898 NFSERR_STALE,
899 NFSERR_STALESTATEID,
900 0,
901 };
902
903 static short nfsv4err_putfh[] = {
904 NFSERR_SERVERFAULT,
905 NFSERR_BADHANDLE,
906 NFSERR_BADXDR,
907 NFSERR_FHEXPIRED,
908 NFSERR_MOVED,
909 NFSERR_RESOURCE,
910 NFSERR_SERVERFAULT,
911 NFSERR_STALE,
912 NFSERR_WRONGSEC,
913 0,
914 };
915
916 static short nfsv4err_putpubfh[] = {
917 NFSERR_SERVERFAULT,
918 NFSERR_RESOURCE,
919 NFSERR_SERVERFAULT,
920 NFSERR_WRONGSEC,
921 0,
922 };
923
924 static short nfsv4err_putrootfh[] = {
925 NFSERR_SERVERFAULT,
926 NFSERR_RESOURCE,
927 NFSERR_SERVERFAULT,
928 NFSERR_WRONGSEC,
929 0,
930 };
931
932 static short nfsv4err_read[] = {
933 NFSERR_IO,
934 NFSERR_ACCES,
935 NFSERR_ADMINREVOKED,
936 NFSERR_BADHANDLE,
937 NFSERR_BADSTATEID,
938 NFSERR_BADXDR,
939 NFSERR_DELAY,
940 NFSERR_EXPIRED,
941 NFSERR_FHEXPIRED,
942 NFSERR_GRACE,
943 NFSERR_IO,
944 NFSERR_INVAL,
945 NFSERR_ISDIR,
946 NFSERR_LEASEMOVED,
947 NFSERR_LOCKED,
948 NFSERR_MOVED,
949 NFSERR_NOFILEHANDLE,
950 NFSERR_NXIO,
951 NFSERR_OLDSTATEID,
952 NFSERR_OPENMODE,
953 NFSERR_RESOURCE,
954 NFSERR_SERVERFAULT,
955 NFSERR_STALE,
956 NFSERR_STALESTATEID,
957 0,
958 };
959
960 static short nfsv4err_readdir[] = {
961 NFSERR_IO,
962 NFSERR_ACCES,
963 NFSERR_BADHANDLE,
964 NFSERR_BAD_COOKIE,
965 NFSERR_BADXDR,
966 NFSERR_DELAY,
967 NFSERR_FHEXPIRED,
968 NFSERR_INVAL,
969 NFSERR_IO,
970 NFSERR_MOVED,
971 NFSERR_NOFILEHANDLE,
972 NFSERR_NOTDIR,
973 NFSERR_NOTSAME,
974 NFSERR_RESOURCE,
975 NFSERR_SERVERFAULT,
976 NFSERR_STALE,
977 NFSERR_TOOSMALL,
978 0,
979 };
980
981 static short nfsv4err_readlink[] = {
982 NFSERR_IO,
983 NFSERR_ACCES,
984 NFSERR_BADHANDLE,
985 NFSERR_DELAY,
986 NFSERR_FHEXPIRED,
987 NFSERR_INVAL,
988 NFSERR_IO,
989 NFSERR_ISDIR,
990 NFSERR_MOVED,
991 NFSERR_NOFILEHANDLE,
992 NFSERR_NOTSUPP,
993 NFSERR_RESOURCE,
994 NFSERR_SERVERFAULT,
995 NFSERR_STALE,
996 0,
997 };
998
999 static short nfsv4err_remove[] = {
1000 NFSERR_IO,
1001 NFSERR_ACCES,
1002 NFSERR_BADCHAR,
1003 NFSERR_BADHANDLE,
1004 NFSERR_BADNAME,
1005 NFSERR_BADXDR,
1006 NFSERR_DELAY,
1007 NFSERR_FHEXPIRED,
1008 NFSERR_FILEOPEN,
1009 NFSERR_INVAL,
1010 NFSERR_IO,
1011 NFSERR_MOVED,
1012 NFSERR_NAMETOL,
1013 NFSERR_NOENT,
1014 NFSERR_NOFILEHANDLE,
1015 NFSERR_NOTDIR,
1016 NFSERR_NOTEMPTY,
1017 NFSERR_RESOURCE,
1018 NFSERR_ROFS,
1019 NFSERR_SERVERFAULT,
1020 NFSERR_STALE,
1021 0,
1022 };
1023
1024 static short nfsv4err_rename[] = {
1025 NFSERR_IO,
1026 NFSERR_ACCES,
1027 NFSERR_BADCHAR,
1028 NFSERR_BADHANDLE,
1029 NFSERR_BADNAME,
1030 NFSERR_BADXDR,
1031 NFSERR_DELAY,
1032 NFSERR_DQUOT,
1033 NFSERR_EXIST,
1034 NFSERR_FHEXPIRED,
1035 NFSERR_FILEOPEN,
1036 NFSERR_INVAL,
1037 NFSERR_IO,
1038 NFSERR_MOVED,
1039 NFSERR_NAMETOL,
1040 NFSERR_NOENT,
1041 NFSERR_NOFILEHANDLE,
1042 NFSERR_NOSPC,
1043 NFSERR_NOTDIR,
1044 NFSERR_NOTEMPTY,
1045 NFSERR_RESOURCE,
1046 NFSERR_ROFS,
1047 NFSERR_SERVERFAULT,
1048 NFSERR_STALE,
1049 NFSERR_WRONGSEC,
1050 NFSERR_XDEV,
1051 0,
1052 };
1053
1054 static short nfsv4err_renew[] = {
1055 NFSERR_SERVERFAULT,
1056 NFSERR_ACCES,
1057 NFSERR_ADMINREVOKED,
1058 NFSERR_BADXDR,
1059 NFSERR_CBPATHDOWN,
1060 NFSERR_EXPIRED,
1061 NFSERR_LEASEMOVED,
1062 NFSERR_RESOURCE,
1063 NFSERR_SERVERFAULT,
1064 NFSERR_STALECLIENTID,
1065 0,
1066 };
1067
1068 static short nfsv4err_restorefh[] = {
1069 NFSERR_SERVERFAULT,
1070 NFSERR_BADHANDLE,
1071 NFSERR_FHEXPIRED,
1072 NFSERR_MOVED,
1073 NFSERR_RESOURCE,
1074 NFSERR_RESTOREFH,
1075 NFSERR_SERVERFAULT,
1076 NFSERR_STALE,
1077 NFSERR_WRONGSEC,
1078 0,
1079 };
1080
1081 static short nfsv4err_savefh[] = {
1082 NFSERR_SERVERFAULT,
1083 NFSERR_BADHANDLE,
1084 NFSERR_FHEXPIRED,
1085 NFSERR_MOVED,
1086 NFSERR_NOFILEHANDLE,
1087 NFSERR_RESOURCE,
1088 NFSERR_SERVERFAULT,
1089 NFSERR_STALE,
1090 0,
1091 };
1092
1093 static short nfsv4err_secinfo[] = {
1094 NFSERR_SERVERFAULT,
1095 NFSERR_ACCES,
1096 NFSERR_BADCHAR,
1097 NFSERR_BADHANDLE,
1098 NFSERR_BADNAME,
1099 NFSERR_BADXDR,
1100 NFSERR_FHEXPIRED,
1101 NFSERR_INVAL,
1102 NFSERR_MOVED,
1103 NFSERR_NAMETOL,
1104 NFSERR_NOENT,
1105 NFSERR_NOFILEHANDLE,
1106 NFSERR_NOTDIR,
1107 NFSERR_RESOURCE,
1108 NFSERR_SERVERFAULT,
1109 NFSERR_STALE,
1110 0,
1111 };
1112
1113 static short nfsv4err_setattr[] = {
1114 NFSERR_IO,
1115 NFSERR_ACCES,
1116 NFSERR_ADMINREVOKED,
1117 NFSERR_ATTRNOTSUPP,
1118 NFSERR_BADCHAR,
1119 NFSERR_BADHANDLE,
1120 NFSERR_BADOWNER,
1121 NFSERR_BADSTATEID,
1122 NFSERR_BADXDR,
1123 NFSERR_DELAY,
1124 NFSERR_DQUOT,
1125 NFSERR_EXPIRED,
1126 NFSERR_FBIG,
1127 NFSERR_FHEXPIRED,
1128 NFSERR_GRACE,
1129 NFSERR_INVAL,
1130 NFSERR_IO,
1131 NFSERR_ISDIR,
1132 NFSERR_LOCKED,
1133 NFSERR_MOVED,
1134 NFSERR_NOFILEHANDLE,
1135 NFSERR_NOSPC,
1136 NFSERR_OLDSTATEID,
1137 NFSERR_OPENMODE,
1138 NFSERR_PERM,
1139 NFSERR_RESOURCE,
1140 NFSERR_ROFS,
1141 NFSERR_SERVERFAULT,
1142 NFSERR_STALE,
1143 NFSERR_STALESTATEID,
1144 0,
1145 };
1146
1147 static short nfsv4err_setclientid[] = {
1148 NFSERR_SERVERFAULT,
1149 NFSERR_BADXDR,
1150 NFSERR_CLIDINUSE,
1151 NFSERR_INVAL,
1152 NFSERR_RESOURCE,
1153 NFSERR_SERVERFAULT,
1154 NFSERR_WRONGSEC,
1155 0,
1156 };
1157
1158 static short nfsv4err_setclientidconfirm[] = {
1159 NFSERR_SERVERFAULT,
1160 NFSERR_BADXDR,
1161 NFSERR_CLIDINUSE,
1162 NFSERR_RESOURCE,
1163 NFSERR_SERVERFAULT,
1164 NFSERR_STALECLIENTID,
1165 0,
1166 };
1167
1168 static short nfsv4err_verify[] = {
1169 NFSERR_SERVERFAULT,
1170 NFSERR_ACCES,
1171 NFSERR_ATTRNOTSUPP,
1172 NFSERR_BADCHAR,
1173 NFSERR_BADHANDLE,
1174 NFSERR_BADXDR,
1175 NFSERR_DELAY,
1176 NFSERR_FHEXPIRED,
1177 NFSERR_INVAL,
1178 NFSERR_MOVED,
1179 NFSERR_NOFILEHANDLE,
1180 NFSERR_NOTSAME,
1181 NFSERR_RESOURCE,
1182 NFSERR_SERVERFAULT,
1183 NFSERR_STALE,
1184 0,
1185 };
1186
1187 static short nfsv4err_write[] = {
1188 NFSERR_IO,
1189 NFSERR_ACCES,
1190 NFSERR_ADMINREVOKED,
1191 NFSERR_BADHANDLE,
1192 NFSERR_BADSTATEID,
1193 NFSERR_BADXDR,
1194 NFSERR_DELAY,
1195 NFSERR_DQUOT,
1196 NFSERR_EXPIRED,
1197 NFSERR_FBIG,
1198 NFSERR_FHEXPIRED,
1199 NFSERR_GRACE,
1200 NFSERR_INVAL,
1201 NFSERR_IO,
1202 NFSERR_ISDIR,
1203 NFSERR_LEASEMOVED,
1204 NFSERR_LOCKED,
1205 NFSERR_MOVED,
1206 NFSERR_NOFILEHANDLE,
1207 NFSERR_NOSPC,
1208 NFSERR_NXIO,
1209 NFSERR_OLDSTATEID,
1210 NFSERR_OPENMODE,
1211 NFSERR_RESOURCE,
1212 NFSERR_ROFS,
1213 NFSERR_SERVERFAULT,
1214 NFSERR_STALE,
1215 NFSERR_STALESTATEID,
1216 0,
1217 };
1218
1219 static short nfsv4err_releaselockowner[] = {
1220 NFSERR_SERVERFAULT,
1221 NFSERR_ADMINREVOKED,
1222 NFSERR_BADXDR,
1223 NFSERR_EXPIRED,
1224 NFSERR_LEASEMOVED,
1225 NFSERR_LOCKSHELD,
1226 NFSERR_RESOURCE,
1227 NFSERR_SERVERFAULT,
1228 NFSERR_STALECLIENTID,
1229 0,
1230 };
1231
1232 static short *nfsrv_v4errmap[] = {
1233 nfsv4err_null,
1234 nfsv4err_null,
1235 nfsv4err_null,
1236 nfsv4err_access,
1237 nfsv4err_close,
1238 nfsv4err_commit,
1239 nfsv4err_create,
1240 nfsv4err_delegpurge,
1241 nfsv4err_delegreturn,
1242 nfsv4err_getattr,
1243 nfsv4err_getfh,
1244 nfsv4err_link,
1245 nfsv4err_lock,
1246 nfsv4err_lockt,
1247 nfsv4err_locku,
1248 nfsv4err_lookup,
1249 nfsv4err_lookupp,
1250 nfsv4err_nverify,
1251 nfsv4err_open,
1252 nfsv4err_openattr,
1253 nfsv4err_openconfirm,
1254 nfsv4err_opendowngrade,
1255 nfsv4err_putfh,
1256 nfsv4err_putpubfh,
1257 nfsv4err_putrootfh,
1258 nfsv4err_read,
1259 nfsv4err_readdir,
1260 nfsv4err_readlink,
1261 nfsv4err_remove,
1262 nfsv4err_rename,
1263 nfsv4err_renew,
1264 nfsv4err_restorefh,
1265 nfsv4err_savefh,
1266 nfsv4err_secinfo,
1267 nfsv4err_setattr,
1268 nfsv4err_setclientid,
1269 nfsv4err_setclientidconfirm,
1270 nfsv4err_verify,
1271 nfsv4err_write,
1272 nfsv4err_releaselockowner,
1273 };
1274
1275 /*
1276 * A fiddled version of m_adj() that ensures null fill to a long
1277 * boundary and only trims off the back end
1278 */
1279 APPLESTATIC void
nfsrv_adj(mbuf_t mp,int len,int nul)1280 nfsrv_adj(mbuf_t mp, int len, int nul)
1281 {
1282 mbuf_t m;
1283 int count, i;
1284 char *cp;
1285
1286 /*
1287 * Trim from tail. Scan the mbuf chain,
1288 * calculating its length and finding the last mbuf.
1289 * If the adjustment only affects this mbuf, then just
1290 * adjust and return. Otherwise, rescan and truncate
1291 * after the remaining size.
1292 */
1293 count = 0;
1294 m = mp;
1295 for (;;) {
1296 count += mbuf_len(m);
1297 if (mbuf_next(m) == NULL)
1298 break;
1299 m = mbuf_next(m);
1300 }
1301 if (mbuf_len(m) > len) {
1302 mbuf_setlen(m, mbuf_len(m) - len);
1303 if (nul > 0) {
1304 cp = NFSMTOD(m, caddr_t) + mbuf_len(m) - nul;
1305 for (i = 0; i < nul; i++)
1306 *cp++ = '\0';
1307 }
1308 return;
1309 }
1310 count -= len;
1311 if (count < 0)
1312 count = 0;
1313 /*
1314 * Correct length for chain is "count".
1315 * Find the mbuf with last data, adjust its length,
1316 * and toss data from remaining mbufs on chain.
1317 */
1318 for (m = mp; m; m = mbuf_next(m)) {
1319 if (mbuf_len(m) >= count) {
1320 mbuf_setlen(m, count);
1321 if (nul > 0) {
1322 cp = NFSMTOD(m, caddr_t) + mbuf_len(m) - nul;
1323 for (i = 0; i < nul; i++)
1324 *cp++ = '\0';
1325 }
1326 break;
1327 }
1328 count -= mbuf_len(m);
1329 }
1330 for (m = mbuf_next(m); m; m = mbuf_next(m))
1331 mbuf_setlen(m, 0);
1332 }
1333
1334 /*
1335 * Make these functions instead of macros, so that the kernel text size
1336 * doesn't get too big...
1337 */
1338 APPLESTATIC void
nfsrv_wcc(struct nfsrv_descript * nd,int before_ret,struct nfsvattr * before_nvap,int after_ret,struct nfsvattr * after_nvap)1339 nfsrv_wcc(struct nfsrv_descript *nd, int before_ret,
1340 struct nfsvattr *before_nvap, int after_ret, struct nfsvattr *after_nvap)
1341 {
1342 u_int32_t *tl;
1343
1344 if (before_ret) {
1345 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
1346 *tl = newnfs_false;
1347 } else {
1348 NFSM_BUILD(tl, u_int32_t *, 7 * NFSX_UNSIGNED);
1349 *tl++ = newnfs_true;
1350 txdr_hyper(before_nvap->na_size, tl);
1351 tl += 2;
1352 txdr_nfsv3time(&(before_nvap->na_mtime), tl);
1353 tl += 2;
1354 txdr_nfsv3time(&(before_nvap->na_ctime), tl);
1355 }
1356 nfsrv_postopattr(nd, after_ret, after_nvap);
1357 }
1358
1359 APPLESTATIC void
nfsrv_postopattr(struct nfsrv_descript * nd,int after_ret,struct nfsvattr * after_nvap)1360 nfsrv_postopattr(struct nfsrv_descript *nd, int after_ret,
1361 struct nfsvattr *after_nvap)
1362 {
1363 u_int32_t *tl;
1364
1365 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
1366 if (after_ret)
1367 *tl = newnfs_false;
1368 else {
1369 *tl = newnfs_true;
1370 nfsrv_fillattr(nd, after_nvap);
1371 }
1372 }
1373
1374 /*
1375 * Fill in file attributes for V2 and 3. For V4, call a separate
1376 * routine that sifts through all the attribute bits.
1377 */
1378 APPLESTATIC void
nfsrv_fillattr(struct nfsrv_descript * nd,struct nfsvattr * nvap)1379 nfsrv_fillattr(struct nfsrv_descript *nd, struct nfsvattr *nvap)
1380 {
1381 struct nfs_fattr *fp;
1382 int fattr_size;
1383
1384 /*
1385 * Build space for the attribute structure.
1386 */
1387 if (nd->nd_flag & ND_NFSV3)
1388 fattr_size = NFSX_V3FATTR;
1389 else
1390 fattr_size = NFSX_V2FATTR;
1391 NFSM_BUILD(fp, struct nfs_fattr *, fattr_size);
1392
1393 /*
1394 * Now just fill it all in.
1395 */
1396 fp->fa_nlink = txdr_unsigned(nvap->na_nlink);
1397 fp->fa_uid = txdr_unsigned(nvap->na_uid);
1398 fp->fa_gid = txdr_unsigned(nvap->na_gid);
1399 if (nd->nd_flag & ND_NFSV3) {
1400 fp->fa_type = vtonfsv34_type(nvap->na_type);
1401 fp->fa_mode = vtonfsv34_mode(nvap->na_mode);
1402 txdr_hyper(nvap->na_size, &fp->fa3_size);
1403 txdr_hyper(nvap->na_bytes, &fp->fa3_used);
1404 fp->fa3_rdev.specdata1 = txdr_unsigned(NFSMAJOR(nvap->na_rdev));
1405 fp->fa3_rdev.specdata2 = txdr_unsigned(NFSMINOR(nvap->na_rdev));
1406 fp->fa3_fsid.nfsuquad[0] = 0;
1407 fp->fa3_fsid.nfsuquad[1] = txdr_unsigned(nvap->na_fsid);
1408 fp->fa3_fileid.nfsuquad[0] = 0;
1409 fp->fa3_fileid.nfsuquad[1] = txdr_unsigned(nvap->na_fileid);
1410 txdr_nfsv3time(&nvap->na_atime, &fp->fa3_atime);
1411 txdr_nfsv3time(&nvap->na_mtime, &fp->fa3_mtime);
1412 txdr_nfsv3time(&nvap->na_ctime, &fp->fa3_ctime);
1413 } else {
1414 fp->fa_type = vtonfsv2_type(nvap->na_type);
1415 fp->fa_mode = vtonfsv2_mode(nvap->na_type, nvap->na_mode);
1416 fp->fa2_size = txdr_unsigned(nvap->na_size);
1417 fp->fa2_blocksize = txdr_unsigned(nvap->na_blocksize);
1418 if (nvap->na_type == VFIFO)
1419 fp->fa2_rdev = 0xffffffff;
1420 else
1421 fp->fa2_rdev = txdr_unsigned(nvap->na_rdev);
1422 fp->fa2_blocks = txdr_unsigned(nvap->na_bytes / NFS_FABLKSIZE);
1423 fp->fa2_fsid = txdr_unsigned(nvap->na_fsid);
1424 fp->fa2_fileid = txdr_unsigned(nvap->na_fileid);
1425 txdr_nfsv2time(&nvap->na_atime, &fp->fa2_atime);
1426 txdr_nfsv2time(&nvap->na_mtime, &fp->fa2_mtime);
1427 txdr_nfsv2time(&nvap->na_ctime, &fp->fa2_ctime);
1428 }
1429 }
1430
1431 /*
1432 * This function gets a file handle out of an mbuf list.
1433 * It returns 0 for success, EBADRPC otherwise.
1434 * If sets the third flagp argument to 1 if the file handle is
1435 * the public file handle.
1436 * For NFSv4, if the length is incorrect, set nd_repstat == NFSERR_BADHANDLE
1437 */
1438 APPLESTATIC int
nfsrv_mtofh(struct nfsrv_descript * nd,struct nfsrvfh * fhp)1439 nfsrv_mtofh(struct nfsrv_descript *nd, struct nfsrvfh *fhp)
1440 {
1441 u_int32_t *tl;
1442 int error = 0, len, copylen;
1443
1444 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) {
1445 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
1446 len = fxdr_unsigned(int, *tl);
1447 if (len == 0 && nfs_pubfhset && (nd->nd_flag & ND_NFSV3) &&
1448 nd->nd_procnum == NFSPROC_LOOKUP) {
1449 nd->nd_flag |= ND_PUBLOOKUP;
1450 goto nfsmout;
1451 }
1452 if (len < NFSRV_MINFH || len > NFSRV_MAXFH) {
1453 if (nd->nd_flag & ND_NFSV4) {
1454 if (len > 0 && len <= NFSX_V4FHMAX) {
1455 error = nfsm_advance(nd, NFSM_RNDUP(len), -1);
1456 if (error)
1457 goto nfsmout;
1458 nd->nd_repstat = NFSERR_BADHANDLE;
1459 goto nfsmout;
1460 } else {
1461 error = EBADRPC;
1462 goto nfsmout;
1463 }
1464 } else {
1465 error = EBADRPC;
1466 goto nfsmout;
1467 }
1468 }
1469 copylen = len;
1470 } else {
1471 /*
1472 * For NFSv2, the file handle is always 32 bytes on the
1473 * wire, but this server only cares about the first
1474 * NFSRV_MAXFH bytes.
1475 */
1476 len = NFSX_V2FH;
1477 copylen = NFSRV_MAXFH;
1478 }
1479 NFSM_DISSECT(tl, u_int32_t *, len);
1480 if ((nd->nd_flag & ND_NFSV2) && nfs_pubfhset &&
1481 nd->nd_procnum == NFSPROC_LOOKUP &&
1482 !NFSBCMP((caddr_t)tl, nfs_v2pubfh, NFSX_V2FH)) {
1483 nd->nd_flag |= ND_PUBLOOKUP;
1484 goto nfsmout;
1485 }
1486 NFSBCOPY(tl, (caddr_t)fhp->nfsrvfh_data, copylen);
1487 fhp->nfsrvfh_len = copylen;
1488 nfsmout:
1489 NFSEXITCODE2(error, nd);
1490 return (error);
1491 }
1492
1493 /*
1494 * Map errnos to NFS error numbers. For Version 3 and 4 also filter out error
1495 * numbers not specified for the associated procedure.
1496 * NFSPROC_NOOP is a special case, where the high order bits of nd_repstat
1497 * should be cleared. NFSPROC_NOOP is used to return errors when a valid
1498 * RPC procedure is not involved.
1499 * Returns the error number in XDR.
1500 */
1501 APPLESTATIC int
nfsd_errmap(struct nfsrv_descript * nd)1502 nfsd_errmap(struct nfsrv_descript *nd)
1503 {
1504 short *defaulterrp, *errp;
1505
1506 if (!nd->nd_repstat)
1507 return (0);
1508 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) {
1509 if (nd->nd_procnum == NFSPROC_NOOP)
1510 return (txdr_unsigned(nd->nd_repstat & 0xffff));
1511 if (nd->nd_flag & ND_NFSV3)
1512 errp = defaulterrp = nfsrv_v3errmap[nd->nd_procnum];
1513 else if (nd->nd_repstat == EBADRPC)
1514 return (txdr_unsigned(NFSERR_BADXDR));
1515 else if (nd->nd_repstat == NFSERR_MINORVERMISMATCH ||
1516 nd->nd_repstat == NFSERR_OPILLEGAL)
1517 return (txdr_unsigned(nd->nd_repstat));
1518 else if ((nd->nd_flag & ND_NFSV41) != 0) {
1519 if (nd->nd_repstat == EOPNOTSUPP)
1520 nd->nd_repstat = NFSERR_NOTSUPP;
1521 nd->nd_repstat = nfsrv_isannfserr(nd->nd_repstat);
1522 return (txdr_unsigned(nd->nd_repstat));
1523 } else
1524 errp = defaulterrp = nfsrv_v4errmap[nd->nd_procnum];
1525 while (*++errp)
1526 if (*errp == nd->nd_repstat)
1527 return (txdr_unsigned(nd->nd_repstat));
1528 return (txdr_unsigned(*defaulterrp));
1529 }
1530 if (nd->nd_repstat <= NFSERR_REMOTE)
1531 return (txdr_unsigned(nfsrv_v2errmap[nd->nd_repstat - 1]));
1532 return (txdr_unsigned(NFSERR_IO));
1533 }
1534
1535 /*
1536 * Check to see if the error is a valid NFS one. If not, replace it with
1537 * NFSERR_IO.
1538 */
1539 static u_int32_t
nfsrv_isannfserr(u_int32_t errval)1540 nfsrv_isannfserr(u_int32_t errval)
1541 {
1542
1543 if (errval == NFSERR_OK)
1544 return (errval);
1545 if (errval >= NFSERR_BADHANDLE && errval <= NFSERR_DELEGREVOKED)
1546 return (errval);
1547 if (errval > 0 && errval <= NFSERR_REMOTE)
1548 return (nfsrv_v2errmap[errval - 1]);
1549 return (NFSERR_IO);
1550 }
1551
1552 /*
1553 * Check to see if setting a uid/gid is permitted when creating a new
1554 * file object. (Called when uid and/or gid is specified in the
1555 * settable attributes for V4.
1556 */
1557 APPLESTATIC int
nfsrv_checkuidgid(struct nfsrv_descript * nd,struct nfsvattr * nvap)1558 nfsrv_checkuidgid(struct nfsrv_descript *nd, struct nfsvattr *nvap)
1559 {
1560 int error = 0;
1561
1562 /*
1563 * If not setting either uid nor gid, it's OK.
1564 */
1565 if (NFSVNO_NOTSETUID(nvap) && NFSVNO_NOTSETGID(nvap))
1566 goto out;
1567 if ((NFSVNO_ISSETUID(nvap) && nvap->na_uid == nfsrv_defaultuid &&
1568 enable_nobodycheck == 1)
1569 || (NFSVNO_ISSETGID(nvap) && nvap->na_gid == nfsrv_defaultgid &&
1570 enable_nogroupcheck == 1)) {
1571 error = NFSERR_BADOWNER;
1572 goto out;
1573 }
1574 if (nd->nd_cred->cr_uid == 0)
1575 goto out;
1576 if ((NFSVNO_ISSETUID(nvap) && nvap->na_uid != nd->nd_cred->cr_uid) ||
1577 (NFSVNO_ISSETGID(nvap) && nvap->na_gid != nd->nd_cred->cr_gid &&
1578 !groupmember(nvap->na_gid, nd->nd_cred)))
1579 error = NFSERR_PERM;
1580
1581 out:
1582 NFSEXITCODE2(error, nd);
1583 return (error);
1584 }
1585
1586 /*
1587 * and this routine fixes up the settable attributes for V4 if allowed
1588 * by nfsrv_checkuidgid().
1589 */
1590 APPLESTATIC void
nfsrv_fixattr(struct nfsrv_descript * nd,vnode_t vp,struct nfsvattr * nvap,NFSACL_T * aclp,NFSPROC_T * p,nfsattrbit_t * attrbitp,struct nfsexstuff * exp)1591 nfsrv_fixattr(struct nfsrv_descript *nd, vnode_t vp,
1592 struct nfsvattr *nvap, NFSACL_T *aclp, NFSPROC_T *p, nfsattrbit_t *attrbitp,
1593 struct nfsexstuff *exp)
1594 {
1595 int change = 0;
1596 struct nfsvattr nva;
1597 uid_t tuid;
1598 int error;
1599 nfsattrbit_t nattrbits;
1600
1601 /*
1602 * Maybe this should be done for V2 and 3 but it never has been
1603 * and nobody seems to be upset, so I think it's best not to change
1604 * the V2 and 3 semantics.
1605 */
1606 if ((nd->nd_flag & ND_NFSV4) == 0)
1607 goto out;
1608 NFSVNO_ATTRINIT(&nva);
1609 NFSZERO_ATTRBIT(&nattrbits);
1610 tuid = nd->nd_cred->cr_uid;
1611 if (NFSISSET_ATTRBIT(attrbitp, NFSATTRBIT_OWNER) &&
1612 NFSVNO_ISSETUID(nvap) &&
1613 nvap->na_uid != nd->nd_cred->cr_uid) {
1614 if (nd->nd_cred->cr_uid == 0) {
1615 nva.na_uid = nvap->na_uid;
1616 change++;
1617 NFSSETBIT_ATTRBIT(&nattrbits, NFSATTRBIT_OWNER);
1618 } else {
1619 NFSCLRBIT_ATTRBIT(attrbitp, NFSATTRBIT_OWNER);
1620 }
1621 }
1622 if (NFSISSET_ATTRBIT(attrbitp, NFSATTRBIT_TIMEACCESSSET) &&
1623 NFSVNO_ISSETATIME(nvap)) {
1624 nva.na_atime = nvap->na_atime;
1625 change++;
1626 NFSSETBIT_ATTRBIT(&nattrbits, NFSATTRBIT_TIMEACCESSSET);
1627 }
1628 if (NFSISSET_ATTRBIT(attrbitp, NFSATTRBIT_TIMEMODIFYSET) &&
1629 NFSVNO_ISSETMTIME(nvap)) {
1630 nva.na_mtime = nvap->na_mtime;
1631 change++;
1632 NFSSETBIT_ATTRBIT(&nattrbits, NFSATTRBIT_TIMEMODIFYSET);
1633 }
1634 if (NFSISSET_ATTRBIT(attrbitp, NFSATTRBIT_OWNERGROUP) &&
1635 NFSVNO_ISSETGID(nvap)) {
1636 if (nvap->na_gid == nd->nd_cred->cr_gid ||
1637 groupmember(nvap->na_gid, nd->nd_cred)) {
1638 nd->nd_cred->cr_uid = 0;
1639 nva.na_gid = nvap->na_gid;
1640 change++;
1641 NFSSETBIT_ATTRBIT(&nattrbits, NFSATTRBIT_OWNERGROUP);
1642 } else {
1643 NFSCLRBIT_ATTRBIT(attrbitp, NFSATTRBIT_OWNERGROUP);
1644 }
1645 }
1646 if (change) {
1647 error = nfsvno_setattr(vp, &nva, nd->nd_cred, p, exp);
1648 if (error) {
1649 NFSCLRALL_ATTRBIT(attrbitp, &nattrbits);
1650 }
1651 }
1652 if (NFSISSET_ATTRBIT(attrbitp, NFSATTRBIT_SIZE) &&
1653 NFSVNO_ISSETSIZE(nvap) && nvap->na_size != (u_quad_t)0) {
1654 NFSCLRBIT_ATTRBIT(attrbitp, NFSATTRBIT_SIZE);
1655 }
1656 #ifdef NFS4_ACL_EXTATTR_NAME
1657 if (NFSISSET_ATTRBIT(attrbitp, NFSATTRBIT_ACL) &&
1658 nfsrv_useacl != 0 && aclp != NULL) {
1659 if (aclp->acl_cnt > 0) {
1660 error = nfsrv_setacl(vp, aclp, nd->nd_cred, p);
1661 if (error) {
1662 NFSCLRBIT_ATTRBIT(attrbitp, NFSATTRBIT_ACL);
1663 }
1664 }
1665 } else
1666 #endif
1667 NFSCLRBIT_ATTRBIT(attrbitp, NFSATTRBIT_ACL);
1668 nd->nd_cred->cr_uid = tuid;
1669
1670 out:
1671 NFSEXITCODE2(0, nd);
1672 }
1673
1674 /*
1675 * Translate an ASCII hex digit to its binary value. Return -1 if the
1676 * char isn't a hex digit.
1677 */
1678 static char
nfsrv_hexdigit(char c,int * err)1679 nfsrv_hexdigit(char c, int *err)
1680 {
1681
1682 *err = 0;
1683 if (c >= '0' && c <= '9')
1684 return (c - '0');
1685 if (c >= 'a' && c <= 'f')
1686 return (c - 'a' + ((char)10));
1687 if (c >= 'A' && c <= 'F')
1688 return (c - 'A' + ((char)10));
1689 /* Not valid ! */
1690 *err = 1;
1691 return (1); /* BOGUS */
1692 }
1693
1694 /*
1695 * Check to see if NFSERR_MOVED can be returned for this op. Return 1 iff
1696 * it can be.
1697 */
1698 APPLESTATIC int
nfsrv_errmoved(int op)1699 nfsrv_errmoved(int op)
1700 {
1701 short *errp;
1702
1703 errp = nfsrv_v4errmap[op];
1704 while (*errp != 0) {
1705 if (*errp == NFSERR_MOVED)
1706 return (1);
1707 errp++;
1708 }
1709 return (0);
1710 }
1711
1712 /*
1713 * Fill in attributes for a Referral.
1714 * (Return the number of bytes of XDR created.)
1715 */
1716 APPLESTATIC int
nfsrv_putreferralattr(struct nfsrv_descript * nd,nfsattrbit_t * retbitp,struct nfsreferral * refp,int getattr,int * reterrp)1717 nfsrv_putreferralattr(struct nfsrv_descript *nd, nfsattrbit_t *retbitp,
1718 struct nfsreferral *refp, int getattr, int *reterrp)
1719 {
1720 u_int32_t *tl, *retnump;
1721 u_char *cp, *cp2;
1722 int prefixnum, retnum = 0, i, len, bitpos, rderrbit = 0, nonrefbit = 0;
1723 int fslocationsbit = 0;
1724 nfsattrbit_t tmpbits, refbits;
1725
1726 NFSREFERRAL_ATTRBIT(&refbits);
1727 if (getattr)
1728 NFSCLRBIT_ATTRBIT(&refbits, NFSATTRBIT_RDATTRERROR);
1729 else if (NFSISSET_ATTRBIT(retbitp, NFSATTRBIT_RDATTRERROR))
1730 rderrbit = 1;
1731 if (NFSISSET_ATTRBIT(retbitp, NFSATTRBIT_FSLOCATIONS))
1732 fslocationsbit = 1;
1733
1734 /*
1735 * Check for the case where unsupported referral attributes are
1736 * requested.
1737 */
1738 NFSSET_ATTRBIT(&tmpbits, retbitp);
1739 NFSCLRALL_ATTRBIT(&tmpbits, &refbits);
1740 if (NFSNONZERO_ATTRBIT(&tmpbits))
1741 nonrefbit = 1;
1742
1743 if (nonrefbit && !fslocationsbit && (getattr || !rderrbit)) {
1744 *reterrp = NFSERR_MOVED;
1745 return (0);
1746 }
1747
1748 /*
1749 * Now we can fill in the attributes.
1750 */
1751 NFSSET_ATTRBIT(&tmpbits, retbitp);
1752 NFSCLRNOT_ATTRBIT(&tmpbits, &refbits);
1753
1754 /*
1755 * Put out the attribute bitmap for the ones being filled in
1756 * and get the field for the number of attributes returned.
1757 */
1758 prefixnum = nfsrv_putattrbit(nd, &tmpbits);
1759 NFSM_BUILD(retnump, u_int32_t *, NFSX_UNSIGNED);
1760 prefixnum += NFSX_UNSIGNED;
1761
1762 /*
1763 * Now, loop around filling in the attributes for each bit set.
1764 */
1765 for (bitpos = 0; bitpos < NFSATTRBIT_MAX; bitpos++) {
1766 if (NFSISSET_ATTRBIT(&tmpbits, bitpos)) {
1767 switch (bitpos) {
1768 case NFSATTRBIT_TYPE:
1769 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
1770 *tl = txdr_unsigned(NFDIR);
1771 retnum += NFSX_UNSIGNED;
1772 break;
1773 case NFSATTRBIT_FSID:
1774 NFSM_BUILD(tl, u_int32_t *, NFSX_V4FSID);
1775 *tl++ = 0;
1776 *tl++ = txdr_unsigned(NFSV4ROOT_FSID0);
1777 *tl++ = 0;
1778 *tl = txdr_unsigned(NFSV4ROOT_REFERRAL);
1779 retnum += NFSX_V4FSID;
1780 break;
1781 case NFSATTRBIT_RDATTRERROR:
1782 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
1783 if (nonrefbit)
1784 *tl = txdr_unsigned(NFSERR_MOVED);
1785 else
1786 *tl = 0;
1787 retnum += NFSX_UNSIGNED;
1788 break;
1789 case NFSATTRBIT_FSLOCATIONS:
1790 retnum += nfsm_strtom(nd, "/", 1);
1791 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
1792 *tl = txdr_unsigned(refp->nfr_srvcnt);
1793 retnum += NFSX_UNSIGNED;
1794 cp = refp->nfr_srvlist;
1795 for (i = 0; i < refp->nfr_srvcnt; i++) {
1796 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
1797 *tl = txdr_unsigned(1);
1798 retnum += NFSX_UNSIGNED;
1799 cp2 = STRCHR(cp, ':');
1800 if (cp2 != NULL)
1801 len = cp2 - cp;
1802 else
1803 len = 1;
1804 retnum += nfsm_strtom(nd, cp, len);
1805 if (cp2 != NULL)
1806 cp = cp2 + 1;
1807 cp2 = STRCHR(cp, ',');
1808 if (cp2 != NULL)
1809 len = cp2 - cp;
1810 else
1811 len = strlen(cp);
1812 retnum += nfsm_strtom(nd, cp, len);
1813 if (cp2 != NULL)
1814 cp = cp2 + 1;
1815 }
1816 break;
1817 case NFSATTRBIT_MOUNTEDONFILEID:
1818 NFSM_BUILD(tl, u_int32_t *, NFSX_HYPER);
1819 *tl++ = 0;
1820 *tl = txdr_unsigned(refp->nfr_dfileno);
1821 retnum += NFSX_HYPER;
1822 break;
1823 default:
1824 printf("EEK! Bad V4 refattr bitpos=%d\n", bitpos);
1825 }
1826 }
1827 }
1828 *retnump = txdr_unsigned(retnum);
1829 return (retnum + prefixnum);
1830 }
1831
1832 /*
1833 * Parse a file name out of a request.
1834 */
1835 APPLESTATIC int
nfsrv_parsename(struct nfsrv_descript * nd,char * bufp,u_long * hashp,NFSPATHLEN_T * outlenp)1836 nfsrv_parsename(struct nfsrv_descript *nd, char *bufp, u_long *hashp,
1837 NFSPATHLEN_T *outlenp)
1838 {
1839 char *fromcp, *tocp, val = '\0';
1840 mbuf_t md;
1841 int i;
1842 int rem, len, error = 0, pubtype = 0, outlen = 0, percent = 0;
1843 char digit;
1844 u_int32_t *tl;
1845 u_long hash = 0;
1846
1847 if (hashp != NULL)
1848 *hashp = 0;
1849 tocp = bufp;
1850 /*
1851 * For V4, check for lookup parent.
1852 * Otherwise, get the component name.
1853 */
1854 if ((nd->nd_flag & ND_NFSV4) && nd->nd_procnum == NFSV4OP_LOOKUPP) {
1855 *tocp++ = '.';
1856 hash += ((u_char)'.');
1857 *tocp++ = '.';
1858 hash += ((u_char)'.');
1859 outlen = 2;
1860 } else {
1861 /*
1862 * First, get the name length.
1863 */
1864 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
1865 len = fxdr_unsigned(int, *tl);
1866 if (len > NFS_MAXNAMLEN) {
1867 nd->nd_repstat = NFSERR_NAMETOL;
1868 error = 0;
1869 goto nfsmout;
1870 } else if (len <= 0) {
1871 nd->nd_repstat = NFSERR_INVAL;
1872 error = 0;
1873 goto nfsmout;
1874 }
1875
1876 /*
1877 * Now, copy the component name into the buffer.
1878 */
1879 fromcp = nd->nd_dpos;
1880 md = nd->nd_md;
1881 rem = NFSMTOD(md, caddr_t) + mbuf_len(md) - fromcp;
1882 for (i = 0; i < len; i++) {
1883 while (rem == 0) {
1884 md = mbuf_next(md);
1885 if (md == NULL) {
1886 error = EBADRPC;
1887 goto nfsmout;
1888 }
1889 fromcp = NFSMTOD(md, caddr_t);
1890 rem = mbuf_len(md);
1891 }
1892 if (*fromcp == '\0') {
1893 nd->nd_repstat = EACCES;
1894 error = 0;
1895 goto nfsmout;
1896 }
1897 /*
1898 * For lookups on the public filehandle, do some special
1899 * processing on the name. (The public file handle is the
1900 * root of the public file system for this server.)
1901 */
1902 if (nd->nd_flag & ND_PUBLOOKUP) {
1903 /*
1904 * If the first char is ASCII, it is a canonical
1905 * path, otherwise it is a native path. (RFC2054
1906 * doesn't actually state what it is if the first
1907 * char isn't ASCII or 0x80, so I assume native.)
1908 * pubtype == 1 -> native path
1909 * pubtype == 2 -> canonical path
1910 */
1911 if (i == 0) {
1912 if (*fromcp & 0x80) {
1913 /*
1914 * Since RFC2054 doesn't indicate
1915 * that a native path of just 0x80
1916 * isn't allowed, I'll replace the
1917 * 0x80 with '/' instead of just
1918 * throwing it away.
1919 */
1920 *fromcp = '/';
1921 pubtype = 1;
1922 } else {
1923 pubtype = 2;
1924 }
1925 }
1926 /*
1927 * '/' only allowed in a native path
1928 */
1929 if (*fromcp == '/' && pubtype != 1) {
1930 nd->nd_repstat = EACCES;
1931 error = 0;
1932 goto nfsmout;
1933 }
1934
1935 /*
1936 * For the special case of 2 hex digits after a
1937 * '%' in an absolute path, calculate the value.
1938 * percent == 1 -> indicates "get first hex digit"
1939 * percent == 2 -> indicates "get second hex digit"
1940 */
1941 if (percent > 0) {
1942 digit = nfsrv_hexdigit(*fromcp, &error);
1943 if (error) {
1944 nd->nd_repstat = EACCES;
1945 error = 0;
1946 goto nfsmout;
1947 }
1948 if (percent == 1) {
1949 val = (digit << 4);
1950 percent = 2;
1951 } else {
1952 val += digit;
1953 percent = 0;
1954 *tocp++ = val;
1955 hash += ((u_char)val);
1956 outlen++;
1957 }
1958 } else {
1959 if (*fromcp == '%' && pubtype == 2) {
1960 /*
1961 * Must be followed by 2 hex digits
1962 */
1963 if ((len - i) < 3) {
1964 nd->nd_repstat = EACCES;
1965 error = 0;
1966 goto nfsmout;
1967 }
1968 percent = 1;
1969 } else {
1970 *tocp++ = *fromcp;
1971 hash += ((u_char)*fromcp);
1972 outlen++;
1973 }
1974 }
1975 } else {
1976 /*
1977 * Normal, non lookup on public, name.
1978 */
1979 if (*fromcp == '/') {
1980 if (nd->nd_flag & ND_NFSV4)
1981 nd->nd_repstat = NFSERR_BADNAME;
1982 else
1983 nd->nd_repstat = EACCES;
1984 error = 0;
1985 goto nfsmout;
1986 }
1987 hash += ((u_char)*fromcp);
1988 *tocp++ = *fromcp;
1989 outlen++;
1990 }
1991 fromcp++;
1992 rem--;
1993 }
1994 nd->nd_md = md;
1995 nd->nd_dpos = fromcp;
1996 i = NFSM_RNDUP(len) - len;
1997 if (i > 0) {
1998 if (rem >= i) {
1999 nd->nd_dpos += i;
2000 } else {
2001 error = nfsm_advance(nd, i, rem);
2002 if (error)
2003 goto nfsmout;
2004 }
2005 }
2006
2007 /*
2008 * For v4, don't allow lookups of '.' or '..' and
2009 * also check for non-utf8 strings.
2010 */
2011 if (nd->nd_flag & ND_NFSV4) {
2012 if ((outlen == 1 && bufp[0] == '.') ||
2013 (outlen == 2 && bufp[0] == '.' &&
2014 bufp[1] == '.')) {
2015 nd->nd_repstat = NFSERR_BADNAME;
2016 error = 0;
2017 goto nfsmout;
2018 }
2019 if (enable_checkutf8 == 1 &&
2020 nfsrv_checkutf8((u_int8_t *)bufp, outlen)) {
2021 nd->nd_repstat = NFSERR_INVAL;
2022 error = 0;
2023 goto nfsmout;
2024 }
2025 }
2026 }
2027 *tocp = '\0';
2028 *outlenp = (size_t)outlen;
2029 if (hashp != NULL)
2030 *hashp = hash;
2031 nfsmout:
2032 NFSEXITCODE2(error, nd);
2033 return (error);
2034 }
2035
2036 void
nfsd_init(void)2037 nfsd_init(void)
2038 {
2039 int i;
2040 static int inited = 0;
2041
2042 if (inited)
2043 return;
2044 inited = 1;
2045
2046 /*
2047 * Initialize client queues. Don't free/reinitialize
2048 * them when nfsds are restarted.
2049 */
2050 nfsclienthash = malloc(sizeof(struct nfsclienthashhead) *
2051 nfsrv_clienthashsize, M_NFSDCLIENT, M_WAITOK | M_ZERO);
2052 for (i = 0; i < nfsrv_clienthashsize; i++)
2053 LIST_INIT(&nfsclienthash[i]);
2054 nfslockhash = malloc(sizeof(struct nfslockhashhead) *
2055 nfsrv_lockhashsize, M_NFSDLOCKFILE, M_WAITOK | M_ZERO);
2056 for (i = 0; i < nfsrv_lockhashsize; i++)
2057 LIST_INIT(&nfslockhash[i]);
2058 nfssessionhash = malloc(sizeof(struct nfssessionhash) *
2059 nfsrv_sessionhashsize, M_NFSDSESSION, M_WAITOK | M_ZERO);
2060 for (i = 0; i < nfsrv_sessionhashsize; i++) {
2061 mtx_init(&nfssessionhash[i].mtx, "nfssm", NULL, MTX_DEF);
2062 LIST_INIT(&nfssessionhash[i].list);
2063 }
2064
2065 /* and the v2 pubfh should be all zeros */
2066 NFSBZERO(nfs_v2pubfh, NFSX_V2FH);
2067 }
2068
2069 /*
2070 * Check the v4 root exports.
2071 * Return 0 if ok, 1 otherwise.
2072 */
2073 int
nfsd_checkrootexp(struct nfsrv_descript * nd)2074 nfsd_checkrootexp(struct nfsrv_descript *nd)
2075 {
2076
2077 if ((nd->nd_flag & (ND_GSS | ND_EXAUTHSYS)) == ND_EXAUTHSYS)
2078 return (0);
2079 if ((nd->nd_flag & (ND_GSSINTEGRITY | ND_EXGSSINTEGRITY)) ==
2080 (ND_GSSINTEGRITY | ND_EXGSSINTEGRITY))
2081 return (0);
2082 if ((nd->nd_flag & (ND_GSSPRIVACY | ND_EXGSSPRIVACY)) ==
2083 (ND_GSSPRIVACY | ND_EXGSSPRIVACY))
2084 return (0);
2085 if ((nd->nd_flag & (ND_GSS | ND_GSSINTEGRITY | ND_GSSPRIVACY |
2086 ND_EXGSS)) == (ND_GSS | ND_EXGSS))
2087 return (0);
2088 return (1);
2089 }
2090
2091 /*
2092 * Parse the first part of an NFSv4 compound to find out what the minor
2093 * version# is.
2094 */
2095 void
nfsd_getminorvers(struct nfsrv_descript * nd,u_char * tag,u_char ** tagstrp,int * taglenp,u_int32_t * minversp)2096 nfsd_getminorvers(struct nfsrv_descript *nd, u_char *tag, u_char **tagstrp,
2097 int *taglenp, u_int32_t *minversp)
2098 {
2099 uint32_t *tl;
2100 int error = 0, taglen = -1;
2101 u_char *tagstr = NULL;
2102
2103 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED);
2104 taglen = fxdr_unsigned(int, *tl);
2105 if (taglen < 0 || taglen > NFSV4_OPAQUELIMIT) {
2106 error = EBADRPC;
2107 goto nfsmout;
2108 }
2109 if (taglen <= NFSV4_SMALLSTR)
2110 tagstr = tag;
2111 else
2112 tagstr = malloc(taglen + 1, M_TEMP, M_WAITOK);
2113 error = nfsrv_mtostr(nd, tagstr, taglen);
2114 if (error != 0)
2115 goto nfsmout;
2116 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED);
2117 *minversp = fxdr_unsigned(u_int32_t, *tl);
2118 *tagstrp = tagstr;
2119 if (*minversp == NFSV41_MINORVERSION)
2120 nd->nd_flag |= ND_NFSV41;
2121 nfsmout:
2122 if (error != 0) {
2123 if (tagstr != NULL && taglen > NFSV4_SMALLSTR)
2124 free(tagstr, M_TEMP);
2125 taglen = -1;
2126 }
2127 *taglenp = taglen;
2128 }
2129
2130