1/*-
2 * Copyright (c) 1989, 1993
3 *	The Regents of the University of California.  All rights reserved.
4 *
5 * This code is derived from software contributed to Berkeley by
6 * Rick Macklem at The University of Guelph.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 *    notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 *    notice, this list of conditions and the following disclaimer in the
15 *    documentation and/or other materials provided with the distribution.
16 * 4. Neither the name of the University nor the names of its contributors
17 *    may be used to endorse or promote products derived from this software
18 *    without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 *
32 */
33
34#include <sys/cdefs.h>
35__FBSDID("$FreeBSD$");
36
37#ifndef APPLEKEXT
38/*
39 * These functions support the macros and help fiddle mbuf chains for
40 * the nfs op functions. They do things like create the rpc header and
41 * copy data between mbuf chains and uio lists.
42 */
43#include <fs/nfs/nfsport.h>
44
45extern u_int32_t newnfs_true, newnfs_false;
46extern int nfs_pubfhset;
47extern struct nfsclienthashhead *nfsclienthash;
48extern int nfsrv_clienthashsize;
49extern struct nfslockhashhead *nfslockhash;
50extern int nfsrv_lockhashsize;
51extern struct nfssessionhash *nfssessionhash;
52extern int nfsrv_sessionhashsize;
53extern int nfsrv_useacl;
54extern uid_t nfsrv_defaultuid;
55extern gid_t nfsrv_defaultgid;
56
57char nfs_v2pubfh[NFSX_V2FH];
58static nfstype newnfsv2_type[9] = { NFNON, NFREG, NFDIR, NFBLK, NFCHR, NFLNK,
59    NFNON, NFCHR, NFNON };
60extern nfstype nfsv34_type[9];
61#endif	/* !APPLEKEXT */
62
63static u_int32_t nfsrv_isannfserr(u_int32_t);
64
65SYSCTL_DECL(_vfs_nfsd);
66
67static int	disable_checkutf8 = 0;
68SYSCTL_INT(_vfs_nfsd, OID_AUTO, disable_checkutf8, CTLFLAG_RW,
69    &disable_checkutf8, 0,
70    "Disable the NFSv4 check for a UTF8 compliant name");
71
72static int    enable_nobodycheck = 1;
73SYSCTL_INT(_vfs_nfsd, OID_AUTO, enable_nobodycheck, CTLFLAG_RW,
74    &enable_nobodycheck, 0,
75    "Enable the NFSv4 check when setting user nobody as owner");
76
77static int    enable_nogroupcheck = 1;
78SYSCTL_INT(_vfs_nfsd, OID_AUTO, enable_nogroupcheck, CTLFLAG_RW,
79    &enable_nogroupcheck, 0,
80    "Enable the NFSv4 check when setting group nogroup as owner");
81
82static char nfsrv_hexdigit(char, int *);
83
84/*
85 * Maps errno values to nfs error numbers.
86 * Use NFSERR_IO as the catch all for ones not specifically defined in
87 * RFC 1094. (It now includes the errors added for NFSv3.)
88 */
89static u_char nfsrv_v2errmap[NFSERR_REMOTE] = {
90  NFSERR_PERM,	NFSERR_NOENT,	NFSERR_IO,	NFSERR_IO,	NFSERR_IO,
91  NFSERR_NXIO,	NFSERR_IO,	NFSERR_IO,	NFSERR_IO,	NFSERR_IO,
92  NFSERR_IO,	NFSERR_IO,	NFSERR_ACCES,	NFSERR_IO,	NFSERR_IO,
93  NFSERR_IO,	NFSERR_EXIST,	NFSERR_XDEV,	NFSERR_NODEV,	NFSERR_NOTDIR,
94  NFSERR_ISDIR,	NFSERR_INVAL,	NFSERR_IO,	NFSERR_IO,	NFSERR_IO,
95  NFSERR_IO,	NFSERR_FBIG,	NFSERR_NOSPC,	NFSERR_IO,	NFSERR_ROFS,
96  NFSERR_MLINK,	NFSERR_IO,	NFSERR_IO,	NFSERR_IO,	NFSERR_IO,
97  NFSERR_IO,	NFSERR_IO,	NFSERR_IO,	NFSERR_IO,	NFSERR_IO,
98  NFSERR_IO,	NFSERR_IO,	NFSERR_IO,	NFSERR_IO,	NFSERR_IO,
99  NFSERR_IO,	NFSERR_IO,	NFSERR_IO,	NFSERR_IO,	NFSERR_IO,
100  NFSERR_IO,	NFSERR_IO,	NFSERR_IO,	NFSERR_IO,	NFSERR_IO,
101  NFSERR_IO,	NFSERR_IO,	NFSERR_IO,	NFSERR_IO,	NFSERR_IO,
102  NFSERR_IO,	NFSERR_IO,	NFSERR_NAMETOL,	NFSERR_IO,	NFSERR_IO,
103  NFSERR_NOTEMPTY, NFSERR_IO,	NFSERR_IO,	NFSERR_DQUOT,	NFSERR_STALE,
104  NFSERR_REMOTE,
105};
106
107/*
108 * Maps errno values to nfs error numbers.
109 * Although it is not obvious whether or not NFS clients really care if
110 * a returned error value is in the specified list for the procedure, the
111 * safest thing to do is filter them appropriately. For Version 2, the
112 * X/Open XNFS document is the only specification that defines error values
113 * for each RPC (The RFC simply lists all possible error values for all RPCs),
114 * so I have decided to not do this for Version 2.
115 * The first entry is the default error return and the rest are the valid
116 * errors for that RPC in increasing numeric order.
117 */
118static short nfsv3err_null[] = {
119	0,
120	0,
121};
122
123static short nfsv3err_getattr[] = {
124	NFSERR_IO,
125	NFSERR_IO,
126	NFSERR_STALE,
127	NFSERR_BADHANDLE,
128	NFSERR_SERVERFAULT,
129	NFSERR_DELAY,
130	0,
131};
132
133static short nfsv3err_setattr[] = {
134	NFSERR_IO,
135	NFSERR_ACCES,
136	NFSERR_PERM,
137	NFSERR_IO,
138	NFSERR_INVAL,
139	NFSERR_NOSPC,
140	NFSERR_ROFS,
141	NFSERR_DQUOT,
142	NFSERR_STALE,
143	NFSERR_BADHANDLE,
144	NFSERR_NOT_SYNC,
145	NFSERR_SERVERFAULT,
146	NFSERR_DELAY,
147	0,
148};
149
150static short nfsv3err_lookup[] = {
151	NFSERR_IO,
152	NFSERR_NOENT,
153	NFSERR_ACCES,
154	NFSERR_NAMETOL,
155	NFSERR_IO,
156	NFSERR_NOTDIR,
157	NFSERR_STALE,
158	NFSERR_BADHANDLE,
159	NFSERR_SERVERFAULT,
160	NFSERR_DELAY,
161	0,
162};
163
164static short nfsv3err_access[] = {
165	NFSERR_IO,
166	NFSERR_IO,
167	NFSERR_STALE,
168	NFSERR_BADHANDLE,
169	NFSERR_SERVERFAULT,
170	NFSERR_DELAY,
171	0,
172};
173
174static short nfsv3err_readlink[] = {
175	NFSERR_IO,
176	NFSERR_IO,
177	NFSERR_ACCES,
178	NFSERR_INVAL,
179	NFSERR_STALE,
180	NFSERR_BADHANDLE,
181	NFSERR_NOTSUPP,
182	NFSERR_SERVERFAULT,
183	NFSERR_DELAY,
184	0,
185};
186
187static short nfsv3err_read[] = {
188	NFSERR_IO,
189	NFSERR_IO,
190	NFSERR_NXIO,
191	NFSERR_ACCES,
192	NFSERR_INVAL,
193	NFSERR_STALE,
194	NFSERR_BADHANDLE,
195	NFSERR_SERVERFAULT,
196	NFSERR_DELAY,
197	0,
198};
199
200static short nfsv3err_write[] = {
201	NFSERR_IO,
202	NFSERR_IO,
203	NFSERR_ACCES,
204	NFSERR_NOSPC,
205	NFSERR_INVAL,
206	NFSERR_FBIG,
207	NFSERR_ROFS,
208	NFSERR_DQUOT,
209	NFSERR_STALE,
210	NFSERR_BADHANDLE,
211	NFSERR_SERVERFAULT,
212	NFSERR_DELAY,
213	0,
214};
215
216static short nfsv3err_create[] = {
217	NFSERR_IO,
218	NFSERR_EXIST,
219	NFSERR_NAMETOL,
220	NFSERR_ACCES,
221	NFSERR_IO,
222	NFSERR_NOTDIR,
223	NFSERR_NOSPC,
224	NFSERR_ROFS,
225	NFSERR_DQUOT,
226	NFSERR_STALE,
227	NFSERR_BADHANDLE,
228	NFSERR_NOTSUPP,
229	NFSERR_SERVERFAULT,
230	NFSERR_DELAY,
231	0,
232};
233
234static short nfsv3err_mkdir[] = {
235	NFSERR_IO,
236	NFSERR_EXIST,
237	NFSERR_ACCES,
238	NFSERR_NAMETOL,
239	NFSERR_IO,
240	NFSERR_NOTDIR,
241	NFSERR_NOSPC,
242	NFSERR_ROFS,
243	NFSERR_DQUOT,
244	NFSERR_STALE,
245	NFSERR_BADHANDLE,
246	NFSERR_NOTSUPP,
247	NFSERR_SERVERFAULT,
248	NFSERR_DELAY,
249	0,
250};
251
252static short nfsv3err_symlink[] = {
253	NFSERR_IO,
254	NFSERR_ACCES,
255	NFSERR_EXIST,
256	NFSERR_NAMETOL,
257	NFSERR_NOSPC,
258	NFSERR_IO,
259	NFSERR_NOTDIR,
260	NFSERR_ROFS,
261	NFSERR_DQUOT,
262	NFSERR_STALE,
263	NFSERR_BADHANDLE,
264	NFSERR_NOTSUPP,
265	NFSERR_SERVERFAULT,
266	NFSERR_DELAY,
267	0,
268};
269
270static short nfsv3err_mknod[] = {
271	NFSERR_IO,
272	NFSERR_ACCES,
273	NFSERR_EXIST,
274	NFSERR_NAMETOL,
275	NFSERR_NOSPC,
276	NFSERR_IO,
277	NFSERR_NOTDIR,
278	NFSERR_ROFS,
279	NFSERR_DQUOT,
280	NFSERR_STALE,
281	NFSERR_BADHANDLE,
282	NFSERR_NOTSUPP,
283	NFSERR_SERVERFAULT,
284	NFSERR_DELAY,
285	NFSERR_BADTYPE,
286	0,
287};
288
289static short nfsv3err_remove[] = {
290	NFSERR_IO,
291	NFSERR_NOENT,
292	NFSERR_ACCES,
293	NFSERR_NAMETOL,
294	NFSERR_IO,
295	NFSERR_NOTDIR,
296	NFSERR_ROFS,
297	NFSERR_STALE,
298	NFSERR_BADHANDLE,
299	NFSERR_SERVERFAULT,
300	NFSERR_DELAY,
301	0,
302};
303
304static short nfsv3err_rmdir[] = {
305	NFSERR_IO,
306	NFSERR_NOENT,
307	NFSERR_ACCES,
308	NFSERR_NOTDIR,
309	NFSERR_NAMETOL,
310	NFSERR_IO,
311	NFSERR_EXIST,
312	NFSERR_INVAL,
313	NFSERR_ROFS,
314	NFSERR_NOTEMPTY,
315	NFSERR_STALE,
316	NFSERR_BADHANDLE,
317	NFSERR_NOTSUPP,
318	NFSERR_SERVERFAULT,
319	NFSERR_DELAY,
320	0,
321};
322
323static short nfsv3err_rename[] = {
324	NFSERR_IO,
325	NFSERR_NOENT,
326	NFSERR_ACCES,
327	NFSERR_EXIST,
328	NFSERR_NAMETOL,
329	NFSERR_XDEV,
330	NFSERR_IO,
331	NFSERR_NOTDIR,
332	NFSERR_ISDIR,
333	NFSERR_INVAL,
334	NFSERR_NOSPC,
335	NFSERR_ROFS,
336	NFSERR_MLINK,
337	NFSERR_NOTEMPTY,
338	NFSERR_DQUOT,
339	NFSERR_STALE,
340	NFSERR_BADHANDLE,
341	NFSERR_NOTSUPP,
342	NFSERR_SERVERFAULT,
343	NFSERR_DELAY,
344	0,
345};
346
347static short nfsv3err_link[] = {
348	NFSERR_IO,
349	NFSERR_ACCES,
350	NFSERR_EXIST,
351	NFSERR_NAMETOL,
352	NFSERR_IO,
353	NFSERR_XDEV,
354	NFSERR_NOTDIR,
355	NFSERR_INVAL,
356	NFSERR_NOSPC,
357	NFSERR_ROFS,
358	NFSERR_MLINK,
359	NFSERR_DQUOT,
360	NFSERR_STALE,
361	NFSERR_BADHANDLE,
362	NFSERR_NOTSUPP,
363	NFSERR_SERVERFAULT,
364	NFSERR_DELAY,
365	0,
366};
367
368static short nfsv3err_readdir[] = {
369	NFSERR_IO,
370	NFSERR_ACCES,
371	NFSERR_NOTDIR,
372	NFSERR_IO,
373	NFSERR_STALE,
374	NFSERR_BADHANDLE,
375	NFSERR_BAD_COOKIE,
376	NFSERR_TOOSMALL,
377	NFSERR_SERVERFAULT,
378	NFSERR_DELAY,
379	0,
380};
381
382static short nfsv3err_readdirplus[] = {
383	NFSERR_IO,
384	NFSERR_ACCES,
385	NFSERR_NOTDIR,
386	NFSERR_IO,
387	NFSERR_STALE,
388	NFSERR_BADHANDLE,
389	NFSERR_BAD_COOKIE,
390	NFSERR_NOTSUPP,
391	NFSERR_TOOSMALL,
392	NFSERR_SERVERFAULT,
393	NFSERR_DELAY,
394	0,
395};
396
397static short nfsv3err_fsstat[] = {
398	NFSERR_IO,
399	NFSERR_IO,
400	NFSERR_STALE,
401	NFSERR_BADHANDLE,
402	NFSERR_SERVERFAULT,
403	NFSERR_DELAY,
404	0,
405};
406
407static short nfsv3err_fsinfo[] = {
408	NFSERR_STALE,
409	NFSERR_STALE,
410	NFSERR_BADHANDLE,
411	NFSERR_SERVERFAULT,
412	NFSERR_DELAY,
413	0,
414};
415
416static short nfsv3err_pathconf[] = {
417	NFSERR_STALE,
418	NFSERR_STALE,
419	NFSERR_BADHANDLE,
420	NFSERR_SERVERFAULT,
421	NFSERR_DELAY,
422	0,
423};
424
425static short nfsv3err_commit[] = {
426	NFSERR_IO,
427	NFSERR_IO,
428	NFSERR_STALE,
429	NFSERR_BADHANDLE,
430	NFSERR_SERVERFAULT,
431	NFSERR_DELAY,
432	0,
433};
434
435static short *nfsrv_v3errmap[] = {
436	nfsv3err_null,
437	nfsv3err_getattr,
438	nfsv3err_setattr,
439	nfsv3err_lookup,
440	nfsv3err_access,
441	nfsv3err_readlink,
442	nfsv3err_read,
443	nfsv3err_write,
444	nfsv3err_create,
445	nfsv3err_mkdir,
446	nfsv3err_symlink,
447	nfsv3err_mknod,
448	nfsv3err_remove,
449	nfsv3err_rmdir,
450	nfsv3err_rename,
451	nfsv3err_link,
452	nfsv3err_readdir,
453	nfsv3err_readdirplus,
454	nfsv3err_fsstat,
455	nfsv3err_fsinfo,
456	nfsv3err_pathconf,
457	nfsv3err_commit,
458};
459
460/*
461 * And the same for V4.
462 */
463static short nfsv4err_null[] = {
464	0,
465	0,
466};
467
468static short nfsv4err_access[] = {
469	NFSERR_IO,
470	NFSERR_ACCES,
471	NFSERR_BADHANDLE,
472	NFSERR_BADXDR,
473	NFSERR_DELAY,
474	NFSERR_FHEXPIRED,
475	NFSERR_INVAL,
476	NFSERR_IO,
477	NFSERR_MOVED,
478	NFSERR_NOFILEHANDLE,
479	NFSERR_RESOURCE,
480	NFSERR_SERVERFAULT,
481	NFSERR_STALE,
482	0,
483};
484
485static short nfsv4err_close[] = {
486	NFSERR_EXPIRED,
487	NFSERR_ADMINREVOKED,
488	NFSERR_BADHANDLE,
489	NFSERR_BADSEQID,
490	NFSERR_BADSTATEID,
491	NFSERR_BADXDR,
492	NFSERR_DELAY,
493	NFSERR_EXPIRED,
494	NFSERR_FHEXPIRED,
495	NFSERR_INVAL,
496	NFSERR_ISDIR,
497	NFSERR_LEASEMOVED,
498	NFSERR_LOCKSHELD,
499	NFSERR_MOVED,
500	NFSERR_NOFILEHANDLE,
501	NFSERR_OLDSTATEID,
502	NFSERR_RESOURCE,
503	NFSERR_SERVERFAULT,
504	NFSERR_STALE,
505	NFSERR_STALESTATEID,
506	0,
507};
508
509static short nfsv4err_commit[] = {
510	NFSERR_IO,
511	NFSERR_ACCES,
512	NFSERR_BADHANDLE,
513	NFSERR_BADXDR,
514	NFSERR_FHEXPIRED,
515	NFSERR_INVAL,
516	NFSERR_IO,
517	NFSERR_ISDIR,
518	NFSERR_MOVED,
519	NFSERR_NOFILEHANDLE,
520	NFSERR_RESOURCE,
521	NFSERR_ROFS,
522	NFSERR_SERVERFAULT,
523	NFSERR_STALE,
524	0,
525};
526
527static short nfsv4err_create[] = {
528	NFSERR_IO,
529	NFSERR_ACCES,
530	NFSERR_ATTRNOTSUPP,
531	NFSERR_BADCHAR,
532	NFSERR_BADHANDLE,
533	NFSERR_BADNAME,
534	NFSERR_BADOWNER,
535	NFSERR_BADTYPE,
536	NFSERR_BADXDR,
537	NFSERR_DELAY,
538	NFSERR_DQUOT,
539	NFSERR_EXIST,
540	NFSERR_FHEXPIRED,
541	NFSERR_INVAL,
542	NFSERR_IO,
543	NFSERR_MOVED,
544	NFSERR_NAMETOL,
545	NFSERR_NOFILEHANDLE,
546	NFSERR_NOSPC,
547	NFSERR_NOTDIR,
548	NFSERR_PERM,
549	NFSERR_RESOURCE,
550	NFSERR_ROFS,
551	NFSERR_SERVERFAULT,
552	NFSERR_STALE,
553	0,
554};
555
556static short nfsv4err_delegpurge[] = {
557	NFSERR_SERVERFAULT,
558	NFSERR_BADXDR,
559	NFSERR_NOTSUPP,
560	NFSERR_LEASEMOVED,
561	NFSERR_MOVED,
562	NFSERR_RESOURCE,
563	NFSERR_SERVERFAULT,
564	NFSERR_STALECLIENTID,
565	0,
566};
567
568static short nfsv4err_delegreturn[] = {
569	NFSERR_SERVERFAULT,
570	NFSERR_ADMINREVOKED,
571	NFSERR_BADSTATEID,
572	NFSERR_BADXDR,
573	NFSERR_EXPIRED,
574	NFSERR_INVAL,
575	NFSERR_LEASEMOVED,
576	NFSERR_MOVED,
577	NFSERR_NOFILEHANDLE,
578	NFSERR_NOTSUPP,
579	NFSERR_OLDSTATEID,
580	NFSERR_RESOURCE,
581	NFSERR_SERVERFAULT,
582	NFSERR_STALE,
583	NFSERR_STALESTATEID,
584	0,
585};
586
587static short nfsv4err_getattr[] = {
588	NFSERR_IO,
589	NFSERR_ACCES,
590	NFSERR_BADHANDLE,
591	NFSERR_BADXDR,
592	NFSERR_DELAY,
593	NFSERR_FHEXPIRED,
594	NFSERR_INVAL,
595	NFSERR_IO,
596	NFSERR_MOVED,
597	NFSERR_NOFILEHANDLE,
598	NFSERR_RESOURCE,
599	NFSERR_SERVERFAULT,
600	NFSERR_STALE,
601	0,
602};
603
604static short nfsv4err_getfh[] = {
605	NFSERR_BADHANDLE,
606	NFSERR_BADHANDLE,
607	NFSERR_FHEXPIRED,
608	NFSERR_MOVED,
609	NFSERR_NOFILEHANDLE,
610	NFSERR_RESOURCE,
611	NFSERR_SERVERFAULT,
612	NFSERR_STALE,
613	0,
614};
615
616static short nfsv4err_link[] = {
617	NFSERR_IO,
618	NFSERR_ACCES,
619	NFSERR_BADCHAR,
620	NFSERR_BADHANDLE,
621	NFSERR_BADNAME,
622	NFSERR_BADXDR,
623	NFSERR_DELAY,
624	NFSERR_DQUOT,
625	NFSERR_EXIST,
626	NFSERR_FHEXPIRED,
627	NFSERR_FILEOPEN,
628	NFSERR_INVAL,
629	NFSERR_IO,
630	NFSERR_ISDIR,
631	NFSERR_MLINK,
632	NFSERR_MOVED,
633	NFSERR_NAMETOL,
634	NFSERR_NOENT,
635	NFSERR_NOFILEHANDLE,
636	NFSERR_NOSPC,
637	NFSERR_NOTDIR,
638	NFSERR_NOTSUPP,
639	NFSERR_RESOURCE,
640	NFSERR_ROFS,
641	NFSERR_SERVERFAULT,
642	NFSERR_STALE,
643	NFSERR_WRONGSEC,
644	NFSERR_XDEV,
645	0,
646};
647
648static short nfsv4err_lock[] = {
649	NFSERR_SERVERFAULT,
650	NFSERR_ACCES,
651	NFSERR_ADMINREVOKED,
652	NFSERR_BADHANDLE,
653	NFSERR_BADRANGE,
654	NFSERR_BADSEQID,
655	NFSERR_BADSTATEID,
656	NFSERR_BADXDR,
657	NFSERR_DEADLOCK,
658	NFSERR_DELAY,
659	NFSERR_DENIED,
660	NFSERR_EXPIRED,
661	NFSERR_FHEXPIRED,
662	NFSERR_GRACE,
663	NFSERR_INVAL,
664	NFSERR_ISDIR,
665	NFSERR_LEASEMOVED,
666	NFSERR_LOCKNOTSUPP,
667	NFSERR_LOCKRANGE,
668	NFSERR_MOVED,
669	NFSERR_NOFILEHANDLE,
670	NFSERR_NOGRACE,
671	NFSERR_OLDSTATEID,
672	NFSERR_OPENMODE,
673	NFSERR_RECLAIMBAD,
674	NFSERR_RECLAIMCONFLICT,
675	NFSERR_RESOURCE,
676	NFSERR_SERVERFAULT,
677	NFSERR_STALE,
678	NFSERR_STALECLIENTID,
679	NFSERR_STALESTATEID,
680	0,
681};
682
683static short nfsv4err_lockt[] = {
684	NFSERR_SERVERFAULT,
685	NFSERR_ACCES,
686	NFSERR_BADHANDLE,
687	NFSERR_BADRANGE,
688	NFSERR_BADXDR,
689	NFSERR_DELAY,
690	NFSERR_DENIED,
691	NFSERR_FHEXPIRED,
692	NFSERR_GRACE,
693	NFSERR_INVAL,
694	NFSERR_ISDIR,
695	NFSERR_LEASEMOVED,
696	NFSERR_LOCKRANGE,
697	NFSERR_MOVED,
698	NFSERR_NOFILEHANDLE,
699	NFSERR_RESOURCE,
700	NFSERR_SERVERFAULT,
701	NFSERR_STALE,
702	NFSERR_STALECLIENTID,
703	0,
704};
705
706static short nfsv4err_locku[] = {
707	NFSERR_SERVERFAULT,
708	NFSERR_ACCES,
709	NFSERR_ADMINREVOKED,
710	NFSERR_BADHANDLE,
711	NFSERR_BADRANGE,
712	NFSERR_BADSEQID,
713	NFSERR_BADSTATEID,
714	NFSERR_BADXDR,
715	NFSERR_EXPIRED,
716	NFSERR_FHEXPIRED,
717	NFSERR_GRACE,
718	NFSERR_INVAL,
719	NFSERR_ISDIR,
720	NFSERR_LEASEMOVED,
721	NFSERR_LOCKRANGE,
722	NFSERR_MOVED,
723	NFSERR_NOFILEHANDLE,
724	NFSERR_OLDSTATEID,
725	NFSERR_RESOURCE,
726	NFSERR_SERVERFAULT,
727	NFSERR_STALE,
728	NFSERR_STALESTATEID,
729	0,
730};
731
732static short nfsv4err_lookup[] = {
733	NFSERR_IO,
734	NFSERR_ACCES,
735	NFSERR_BADCHAR,
736	NFSERR_BADHANDLE,
737	NFSERR_BADNAME,
738	NFSERR_BADXDR,
739	NFSERR_FHEXPIRED,
740	NFSERR_INVAL,
741	NFSERR_IO,
742	NFSERR_MOVED,
743	NFSERR_NAMETOL,
744	NFSERR_NOENT,
745	NFSERR_NOFILEHANDLE,
746	NFSERR_NOTDIR,
747	NFSERR_RESOURCE,
748	NFSERR_SERVERFAULT,
749	NFSERR_STALE,
750	NFSERR_SYMLINK,
751	NFSERR_WRONGSEC,
752	0,
753};
754
755static short nfsv4err_lookupp[] = {
756	NFSERR_IO,
757	NFSERR_ACCES,
758	NFSERR_BADHANDLE,
759	NFSERR_FHEXPIRED,
760	NFSERR_IO,
761	NFSERR_MOVED,
762	NFSERR_NOENT,
763	NFSERR_NOFILEHANDLE,
764	NFSERR_NOTDIR,
765	NFSERR_RESOURCE,
766	NFSERR_SERVERFAULT,
767	NFSERR_STALE,
768	0,
769};
770
771static short nfsv4err_nverify[] = {
772	NFSERR_IO,
773	NFSERR_ACCES,
774	NFSERR_ATTRNOTSUPP,
775	NFSERR_BADCHAR,
776	NFSERR_BADHANDLE,
777	NFSERR_BADXDR,
778	NFSERR_DELAY,
779	NFSERR_FHEXPIRED,
780	NFSERR_INVAL,
781	NFSERR_IO,
782	NFSERR_MOVED,
783	NFSERR_NOFILEHANDLE,
784	NFSERR_RESOURCE,
785	NFSERR_SAME,
786	NFSERR_SERVERFAULT,
787	NFSERR_STALE,
788	0,
789};
790
791static short nfsv4err_open[] = {
792	NFSERR_IO,
793	NFSERR_ACCES,
794	NFSERR_ADMINREVOKED,
795	NFSERR_ATTRNOTSUPP,
796	NFSERR_BADCHAR,
797	NFSERR_BADHANDLE,
798	NFSERR_BADNAME,
799	NFSERR_BADOWNER,
800	NFSERR_BADSEQID,
801	NFSERR_BADXDR,
802	NFSERR_DELAY,
803	NFSERR_DQUOT,
804	NFSERR_EXIST,
805	NFSERR_EXPIRED,
806	NFSERR_FHEXPIRED,
807	NFSERR_GRACE,
808	NFSERR_IO,
809	NFSERR_INVAL,
810	NFSERR_ISDIR,
811	NFSERR_LEASEMOVED,
812	NFSERR_MOVED,
813	NFSERR_NAMETOL,
814	NFSERR_NOENT,
815	NFSERR_NOFILEHANDLE,
816	NFSERR_NOGRACE,
817	NFSERR_NOSPC,
818	NFSERR_NOTDIR,
819	NFSERR_NOTSUPP,
820	NFSERR_PERM,
821	NFSERR_RECLAIMBAD,
822	NFSERR_RECLAIMCONFLICT,
823	NFSERR_RESOURCE,
824	NFSERR_ROFS,
825	NFSERR_SERVERFAULT,
826	NFSERR_SHAREDENIED,
827	NFSERR_STALE,
828	NFSERR_STALECLIENTID,
829	NFSERR_SYMLINK,
830	NFSERR_WRONGSEC,
831	0,
832};
833
834static short nfsv4err_openattr[] = {
835	NFSERR_IO,
836	NFSERR_ACCES,
837	NFSERR_BADHANDLE,
838	NFSERR_BADXDR,
839	NFSERR_DELAY,
840	NFSERR_DQUOT,
841	NFSERR_FHEXPIRED,
842	NFSERR_IO,
843	NFSERR_MOVED,
844	NFSERR_NOENT,
845	NFSERR_NOFILEHANDLE,
846	NFSERR_NOSPC,
847	NFSERR_NOTSUPP,
848	NFSERR_RESOURCE,
849	NFSERR_ROFS,
850	NFSERR_SERVERFAULT,
851	NFSERR_STALE,
852	0,
853};
854
855static short nfsv4err_openconfirm[] = {
856	NFSERR_SERVERFAULT,
857	NFSERR_ADMINREVOKED,
858	NFSERR_BADHANDLE,
859	NFSERR_BADSEQID,
860	NFSERR_BADSTATEID,
861	NFSERR_BADXDR,
862	NFSERR_EXPIRED,
863	NFSERR_FHEXPIRED,
864	NFSERR_INVAL,
865	NFSERR_ISDIR,
866	NFSERR_MOVED,
867	NFSERR_NOFILEHANDLE,
868	NFSERR_OLDSTATEID,
869	NFSERR_RESOURCE,
870	NFSERR_SERVERFAULT,
871	NFSERR_STALE,
872	NFSERR_STALESTATEID,
873	0,
874};
875
876static short nfsv4err_opendowngrade[] = {
877	NFSERR_SERVERFAULT,
878	NFSERR_ADMINREVOKED,
879	NFSERR_BADHANDLE,
880	NFSERR_BADSEQID,
881	NFSERR_BADSTATEID,
882	NFSERR_BADXDR,
883	NFSERR_EXPIRED,
884	NFSERR_FHEXPIRED,
885	NFSERR_INVAL,
886	NFSERR_MOVED,
887	NFSERR_NOFILEHANDLE,
888	NFSERR_OLDSTATEID,
889	NFSERR_RESOURCE,
890	NFSERR_SERVERFAULT,
891	NFSERR_STALE,
892	NFSERR_STALESTATEID,
893	0,
894};
895
896static short nfsv4err_putfh[] = {
897	NFSERR_SERVERFAULT,
898	NFSERR_BADHANDLE,
899	NFSERR_BADXDR,
900	NFSERR_FHEXPIRED,
901	NFSERR_MOVED,
902	NFSERR_RESOURCE,
903	NFSERR_SERVERFAULT,
904	NFSERR_STALE,
905	NFSERR_WRONGSEC,
906	0,
907};
908
909static short nfsv4err_putpubfh[] = {
910	NFSERR_SERVERFAULT,
911	NFSERR_RESOURCE,
912	NFSERR_SERVERFAULT,
913	NFSERR_WRONGSEC,
914	0,
915};
916
917static short nfsv4err_putrootfh[] = {
918	NFSERR_SERVERFAULT,
919	NFSERR_RESOURCE,
920	NFSERR_SERVERFAULT,
921	NFSERR_WRONGSEC,
922	0,
923};
924
925static short nfsv4err_read[] = {
926	NFSERR_IO,
927	NFSERR_ACCES,
928	NFSERR_ADMINREVOKED,
929	NFSERR_BADHANDLE,
930	NFSERR_BADSTATEID,
931	NFSERR_BADXDR,
932	NFSERR_DELAY,
933	NFSERR_EXPIRED,
934	NFSERR_FHEXPIRED,
935	NFSERR_GRACE,
936	NFSERR_IO,
937	NFSERR_INVAL,
938	NFSERR_ISDIR,
939	NFSERR_LEASEMOVED,
940	NFSERR_LOCKED,
941	NFSERR_MOVED,
942	NFSERR_NOFILEHANDLE,
943	NFSERR_NXIO,
944	NFSERR_OLDSTATEID,
945	NFSERR_OPENMODE,
946	NFSERR_RESOURCE,
947	NFSERR_SERVERFAULT,
948	NFSERR_STALE,
949	NFSERR_STALESTATEID,
950	0,
951};
952
953static short nfsv4err_readdir[] = {
954	NFSERR_IO,
955	NFSERR_ACCES,
956	NFSERR_BADHANDLE,
957	NFSERR_BAD_COOKIE,
958	NFSERR_BADXDR,
959	NFSERR_DELAY,
960	NFSERR_FHEXPIRED,
961	NFSERR_INVAL,
962	NFSERR_IO,
963	NFSERR_MOVED,
964	NFSERR_NOFILEHANDLE,
965	NFSERR_NOTDIR,
966	NFSERR_NOTSAME,
967	NFSERR_RESOURCE,
968	NFSERR_SERVERFAULT,
969	NFSERR_STALE,
970	NFSERR_TOOSMALL,
971	0,
972};
973
974static short nfsv4err_readlink[] = {
975	NFSERR_IO,
976	NFSERR_ACCES,
977	NFSERR_BADHANDLE,
978	NFSERR_DELAY,
979	NFSERR_FHEXPIRED,
980	NFSERR_INVAL,
981	NFSERR_IO,
982	NFSERR_ISDIR,
983	NFSERR_MOVED,
984	NFSERR_NOFILEHANDLE,
985	NFSERR_NOTSUPP,
986	NFSERR_RESOURCE,
987	NFSERR_SERVERFAULT,
988	NFSERR_STALE,
989	0,
990};
991
992static short nfsv4err_remove[] = {
993	NFSERR_IO,
994	NFSERR_ACCES,
995	NFSERR_BADCHAR,
996	NFSERR_BADHANDLE,
997	NFSERR_BADNAME,
998	NFSERR_BADXDR,
999	NFSERR_DELAY,
1000	NFSERR_FHEXPIRED,
1001	NFSERR_FILEOPEN,
1002	NFSERR_INVAL,
1003	NFSERR_IO,
1004	NFSERR_MOVED,
1005	NFSERR_NAMETOL,
1006	NFSERR_NOENT,
1007	NFSERR_NOFILEHANDLE,
1008	NFSERR_NOTDIR,
1009	NFSERR_NOTEMPTY,
1010	NFSERR_RESOURCE,
1011	NFSERR_ROFS,
1012	NFSERR_SERVERFAULT,
1013	NFSERR_STALE,
1014	0,
1015};
1016
1017static short nfsv4err_rename[] = {
1018	NFSERR_IO,
1019	NFSERR_ACCES,
1020	NFSERR_BADCHAR,
1021	NFSERR_BADHANDLE,
1022	NFSERR_BADNAME,
1023	NFSERR_BADXDR,
1024	NFSERR_DELAY,
1025	NFSERR_DQUOT,
1026	NFSERR_EXIST,
1027	NFSERR_FHEXPIRED,
1028	NFSERR_FILEOPEN,
1029	NFSERR_INVAL,
1030	NFSERR_IO,
1031	NFSERR_MOVED,
1032	NFSERR_NAMETOL,
1033	NFSERR_NOENT,
1034	NFSERR_NOFILEHANDLE,
1035	NFSERR_NOSPC,
1036	NFSERR_NOTDIR,
1037	NFSERR_NOTEMPTY,
1038	NFSERR_RESOURCE,
1039	NFSERR_ROFS,
1040	NFSERR_SERVERFAULT,
1041	NFSERR_STALE,
1042	NFSERR_WRONGSEC,
1043	NFSERR_XDEV,
1044	0,
1045};
1046
1047static short nfsv4err_renew[] = {
1048	NFSERR_SERVERFAULT,
1049	NFSERR_ACCES,
1050	NFSERR_ADMINREVOKED,
1051	NFSERR_BADXDR,
1052	NFSERR_CBPATHDOWN,
1053	NFSERR_EXPIRED,
1054	NFSERR_LEASEMOVED,
1055	NFSERR_RESOURCE,
1056	NFSERR_SERVERFAULT,
1057	NFSERR_STALECLIENTID,
1058	0,
1059};
1060
1061static short nfsv4err_restorefh[] = {
1062	NFSERR_SERVERFAULT,
1063	NFSERR_BADHANDLE,
1064	NFSERR_FHEXPIRED,
1065	NFSERR_MOVED,
1066	NFSERR_RESOURCE,
1067	NFSERR_RESTOREFH,
1068	NFSERR_SERVERFAULT,
1069	NFSERR_STALE,
1070	NFSERR_WRONGSEC,
1071	0,
1072};
1073
1074static short nfsv4err_savefh[] = {
1075	NFSERR_SERVERFAULT,
1076	NFSERR_BADHANDLE,
1077	NFSERR_FHEXPIRED,
1078	NFSERR_MOVED,
1079	NFSERR_NOFILEHANDLE,
1080	NFSERR_RESOURCE,
1081	NFSERR_SERVERFAULT,
1082	NFSERR_STALE,
1083	0,
1084};
1085
1086static short nfsv4err_secinfo[] = {
1087	NFSERR_SERVERFAULT,
1088	NFSERR_ACCES,
1089	NFSERR_BADCHAR,
1090	NFSERR_BADHANDLE,
1091	NFSERR_BADNAME,
1092	NFSERR_BADXDR,
1093	NFSERR_FHEXPIRED,
1094	NFSERR_INVAL,
1095	NFSERR_MOVED,
1096	NFSERR_NAMETOL,
1097	NFSERR_NOENT,
1098	NFSERR_NOFILEHANDLE,
1099	NFSERR_NOTDIR,
1100	NFSERR_RESOURCE,
1101	NFSERR_SERVERFAULT,
1102	NFSERR_STALE,
1103	0,
1104};
1105
1106static short nfsv4err_setattr[] = {
1107	NFSERR_IO,
1108	NFSERR_ACCES,
1109	NFSERR_ADMINREVOKED,
1110	NFSERR_ATTRNOTSUPP,
1111	NFSERR_BADCHAR,
1112	NFSERR_BADHANDLE,
1113	NFSERR_BADOWNER,
1114	NFSERR_BADSTATEID,
1115	NFSERR_BADXDR,
1116	NFSERR_DELAY,
1117	NFSERR_DQUOT,
1118	NFSERR_EXPIRED,
1119	NFSERR_FBIG,
1120	NFSERR_FHEXPIRED,
1121	NFSERR_GRACE,
1122	NFSERR_INVAL,
1123	NFSERR_IO,
1124	NFSERR_ISDIR,
1125	NFSERR_LOCKED,
1126	NFSERR_MOVED,
1127	NFSERR_NOFILEHANDLE,
1128	NFSERR_NOSPC,
1129	NFSERR_OLDSTATEID,
1130	NFSERR_OPENMODE,
1131	NFSERR_PERM,
1132	NFSERR_RESOURCE,
1133	NFSERR_ROFS,
1134	NFSERR_SERVERFAULT,
1135	NFSERR_STALE,
1136	NFSERR_STALESTATEID,
1137	0,
1138};
1139
1140static short nfsv4err_setclientid[] = {
1141	NFSERR_SERVERFAULT,
1142	NFSERR_BADXDR,
1143	NFSERR_CLIDINUSE,
1144	NFSERR_INVAL,
1145	NFSERR_RESOURCE,
1146	NFSERR_SERVERFAULT,
1147	NFSERR_WRONGSEC,
1148	0,
1149};
1150
1151static short nfsv4err_setclientidconfirm[] = {
1152	NFSERR_SERVERFAULT,
1153	NFSERR_BADXDR,
1154	NFSERR_CLIDINUSE,
1155	NFSERR_RESOURCE,
1156	NFSERR_SERVERFAULT,
1157	NFSERR_STALECLIENTID,
1158	0,
1159};
1160
1161static short nfsv4err_verify[] = {
1162	NFSERR_SERVERFAULT,
1163	NFSERR_ACCES,
1164	NFSERR_ATTRNOTSUPP,
1165	NFSERR_BADCHAR,
1166	NFSERR_BADHANDLE,
1167	NFSERR_BADXDR,
1168	NFSERR_DELAY,
1169	NFSERR_FHEXPIRED,
1170	NFSERR_INVAL,
1171	NFSERR_MOVED,
1172	NFSERR_NOFILEHANDLE,
1173	NFSERR_NOTSAME,
1174	NFSERR_RESOURCE,
1175	NFSERR_SERVERFAULT,
1176	NFSERR_STALE,
1177	0,
1178};
1179
1180static short nfsv4err_write[] = {
1181	NFSERR_IO,
1182	NFSERR_ACCES,
1183	NFSERR_ADMINREVOKED,
1184	NFSERR_BADHANDLE,
1185	NFSERR_BADSTATEID,
1186	NFSERR_BADXDR,
1187	NFSERR_DELAY,
1188	NFSERR_DQUOT,
1189	NFSERR_EXPIRED,
1190	NFSERR_FBIG,
1191	NFSERR_FHEXPIRED,
1192	NFSERR_GRACE,
1193	NFSERR_INVAL,
1194	NFSERR_IO,
1195	NFSERR_ISDIR,
1196	NFSERR_LEASEMOVED,
1197	NFSERR_LOCKED,
1198	NFSERR_MOVED,
1199	NFSERR_NOFILEHANDLE,
1200	NFSERR_NOSPC,
1201	NFSERR_NXIO,
1202	NFSERR_OLDSTATEID,
1203	NFSERR_OPENMODE,
1204	NFSERR_RESOURCE,
1205	NFSERR_ROFS,
1206	NFSERR_SERVERFAULT,
1207	NFSERR_STALE,
1208	NFSERR_STALESTATEID,
1209	0,
1210};
1211
1212static short nfsv4err_releaselockowner[] = {
1213	NFSERR_SERVERFAULT,
1214	NFSERR_ADMINREVOKED,
1215	NFSERR_BADXDR,
1216	NFSERR_EXPIRED,
1217	NFSERR_LEASEMOVED,
1218	NFSERR_LOCKSHELD,
1219	NFSERR_RESOURCE,
1220	NFSERR_SERVERFAULT,
1221	NFSERR_STALECLIENTID,
1222	0,
1223};
1224
1225static short *nfsrv_v4errmap[] = {
1226	nfsv4err_null,
1227	nfsv4err_null,
1228	nfsv4err_null,
1229	nfsv4err_access,
1230	nfsv4err_close,
1231	nfsv4err_commit,
1232	nfsv4err_create,
1233	nfsv4err_delegpurge,
1234	nfsv4err_delegreturn,
1235	nfsv4err_getattr,
1236	nfsv4err_getfh,
1237	nfsv4err_link,
1238	nfsv4err_lock,
1239	nfsv4err_lockt,
1240	nfsv4err_locku,
1241	nfsv4err_lookup,
1242	nfsv4err_lookupp,
1243	nfsv4err_nverify,
1244	nfsv4err_open,
1245	nfsv4err_openattr,
1246	nfsv4err_openconfirm,
1247	nfsv4err_opendowngrade,
1248	nfsv4err_putfh,
1249	nfsv4err_putpubfh,
1250	nfsv4err_putrootfh,
1251	nfsv4err_read,
1252	nfsv4err_readdir,
1253	nfsv4err_readlink,
1254	nfsv4err_remove,
1255	nfsv4err_rename,
1256	nfsv4err_renew,
1257	nfsv4err_restorefh,
1258	nfsv4err_savefh,
1259	nfsv4err_secinfo,
1260	nfsv4err_setattr,
1261	nfsv4err_setclientid,
1262	nfsv4err_setclientidconfirm,
1263	nfsv4err_verify,
1264	nfsv4err_write,
1265	nfsv4err_releaselockowner,
1266};
1267
1268/*
1269 * A fiddled version of m_adj() that ensures null fill to a long
1270 * boundary and only trims off the back end
1271 */
1272APPLESTATIC void
1273nfsrv_adj(mbuf_t mp, int len, int nul)
1274{
1275	mbuf_t m;
1276	int count, i;
1277	char *cp;
1278
1279	/*
1280	 * Trim from tail.  Scan the mbuf chain,
1281	 * calculating its length and finding the last mbuf.
1282	 * If the adjustment only affects this mbuf, then just
1283	 * adjust and return.  Otherwise, rescan and truncate
1284	 * after the remaining size.
1285	 */
1286	count = 0;
1287	m = mp;
1288	for (;;) {
1289		count += mbuf_len(m);
1290		if (mbuf_next(m) == NULL)
1291			break;
1292		m = mbuf_next(m);
1293	}
1294	if (mbuf_len(m) > len) {
1295		mbuf_setlen(m, mbuf_len(m) - len);
1296		if (nul > 0) {
1297			cp = NFSMTOD(m, caddr_t) + mbuf_len(m) - nul;
1298			for (i = 0; i < nul; i++)
1299				*cp++ = '\0';
1300		}
1301		return;
1302	}
1303	count -= len;
1304	if (count < 0)
1305		count = 0;
1306	/*
1307	 * Correct length for chain is "count".
1308	 * Find the mbuf with last data, adjust its length,
1309	 * and toss data from remaining mbufs on chain.
1310	 */
1311	for (m = mp; m; m = mbuf_next(m)) {
1312		if (mbuf_len(m) >= count) {
1313			mbuf_setlen(m, count);
1314			if (nul > 0) {
1315				cp = NFSMTOD(m, caddr_t) + mbuf_len(m) - nul;
1316				for (i = 0; i < nul; i++)
1317					*cp++ = '\0';
1318			}
1319			break;
1320		}
1321		count -= mbuf_len(m);
1322	}
1323	for (m = mbuf_next(m); m; m = mbuf_next(m))
1324		mbuf_setlen(m, 0);
1325}
1326
1327/*
1328 * Make these functions instead of macros, so that the kernel text size
1329 * doesn't get too big...
1330 */
1331APPLESTATIC void
1332nfsrv_wcc(struct nfsrv_descript *nd, int before_ret,
1333    struct nfsvattr *before_nvap, int after_ret, struct nfsvattr *after_nvap)
1334{
1335	u_int32_t *tl;
1336
1337	if (before_ret) {
1338		NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
1339		*tl = newnfs_false;
1340	} else {
1341		NFSM_BUILD(tl, u_int32_t *, 7 * NFSX_UNSIGNED);
1342		*tl++ = newnfs_true;
1343		txdr_hyper(before_nvap->na_size, tl);
1344		tl += 2;
1345		txdr_nfsv3time(&(before_nvap->na_mtime), tl);
1346		tl += 2;
1347		txdr_nfsv3time(&(before_nvap->na_ctime), tl);
1348	}
1349	nfsrv_postopattr(nd, after_ret, after_nvap);
1350}
1351
1352APPLESTATIC void
1353nfsrv_postopattr(struct nfsrv_descript *nd, int after_ret,
1354    struct nfsvattr *after_nvap)
1355{
1356	u_int32_t *tl;
1357
1358	NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
1359	if (after_ret)
1360		*tl = newnfs_false;
1361	else {
1362		*tl = newnfs_true;
1363		nfsrv_fillattr(nd, after_nvap);
1364	}
1365}
1366
1367/*
1368 * Fill in file attributes for V2 and 3. For V4, call a separate
1369 * routine that sifts through all the attribute bits.
1370 */
1371APPLESTATIC void
1372nfsrv_fillattr(struct nfsrv_descript *nd, struct nfsvattr *nvap)
1373{
1374	struct nfs_fattr *fp;
1375	int fattr_size;
1376
1377	/*
1378	 * Build space for the attribute structure.
1379	 */
1380	if (nd->nd_flag & ND_NFSV3)
1381		fattr_size = NFSX_V3FATTR;
1382	else
1383		fattr_size = NFSX_V2FATTR;
1384	NFSM_BUILD(fp, struct nfs_fattr *, fattr_size);
1385
1386	/*
1387	 * Now just fill it all in.
1388	 */
1389	fp->fa_nlink = txdr_unsigned(nvap->na_nlink);
1390	fp->fa_uid = txdr_unsigned(nvap->na_uid);
1391	fp->fa_gid = txdr_unsigned(nvap->na_gid);
1392	if (nd->nd_flag & ND_NFSV3) {
1393		fp->fa_type = vtonfsv34_type(nvap->na_type);
1394		fp->fa_mode = vtonfsv34_mode(nvap->na_mode);
1395		txdr_hyper(nvap->na_size, &fp->fa3_size);
1396		txdr_hyper(nvap->na_bytes, &fp->fa3_used);
1397		fp->fa3_rdev.specdata1 = txdr_unsigned(NFSMAJOR(nvap->na_rdev));
1398		fp->fa3_rdev.specdata2 = txdr_unsigned(NFSMINOR(nvap->na_rdev));
1399		fp->fa3_fsid.nfsuquad[0] = 0;
1400		fp->fa3_fsid.nfsuquad[1] = txdr_unsigned(nvap->na_fsid);
1401		fp->fa3_fileid.nfsuquad[0] = 0;
1402		fp->fa3_fileid.nfsuquad[1] = txdr_unsigned(nvap->na_fileid);
1403		txdr_nfsv3time(&nvap->na_atime, &fp->fa3_atime);
1404		txdr_nfsv3time(&nvap->na_mtime, &fp->fa3_mtime);
1405		txdr_nfsv3time(&nvap->na_ctime, &fp->fa3_ctime);
1406	} else {
1407		fp->fa_type = vtonfsv2_type(nvap->na_type);
1408		fp->fa_mode = vtonfsv2_mode(nvap->na_type, nvap->na_mode);
1409		fp->fa2_size = txdr_unsigned(nvap->na_size);
1410		fp->fa2_blocksize = txdr_unsigned(nvap->na_blocksize);
1411		if (nvap->na_type == VFIFO)
1412			fp->fa2_rdev = 0xffffffff;
1413		else
1414			fp->fa2_rdev = txdr_unsigned(nvap->na_rdev);
1415		fp->fa2_blocks = txdr_unsigned(nvap->na_bytes / NFS_FABLKSIZE);
1416		fp->fa2_fsid = txdr_unsigned(nvap->na_fsid);
1417		fp->fa2_fileid = txdr_unsigned(nvap->na_fileid);
1418		txdr_nfsv2time(&nvap->na_atime, &fp->fa2_atime);
1419		txdr_nfsv2time(&nvap->na_mtime, &fp->fa2_mtime);
1420		txdr_nfsv2time(&nvap->na_ctime, &fp->fa2_ctime);
1421	}
1422}
1423
1424/*
1425 * This function gets a file handle out of an mbuf list.
1426 * It returns 0 for success, EBADRPC otherwise.
1427 * If sets the third flagp argument to 1 if the file handle is
1428 * the public file handle.
1429 * For NFSv4, if the length is incorrect, set nd_repstat == NFSERR_BADHANDLE
1430 */
1431APPLESTATIC int
1432nfsrv_mtofh(struct nfsrv_descript *nd, struct nfsrvfh *fhp)
1433{
1434	u_int32_t *tl;
1435	int error = 0, len, copylen;
1436
1437	if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) {
1438		NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
1439		len = fxdr_unsigned(int, *tl);
1440		if (len == 0 && nfs_pubfhset && (nd->nd_flag & ND_NFSV3) &&
1441		    nd->nd_procnum == NFSPROC_LOOKUP) {
1442			nd->nd_flag |= ND_PUBLOOKUP;
1443			goto nfsmout;
1444		}
1445		if (len < NFSRV_MINFH || len > NFSRV_MAXFH) {
1446			if (nd->nd_flag & ND_NFSV4) {
1447			    if (len > 0 && len <= NFSX_V4FHMAX) {
1448				error = nfsm_advance(nd, NFSM_RNDUP(len), -1);
1449				if (error)
1450					goto nfsmout;
1451				nd->nd_repstat = NFSERR_BADHANDLE;
1452				goto nfsmout;
1453			    } else {
1454				    error = EBADRPC;
1455				    goto nfsmout;
1456			    }
1457			} else {
1458				error = EBADRPC;
1459				goto nfsmout;
1460			}
1461		}
1462		copylen = len;
1463	} else {
1464		/*
1465		 * For NFSv2, the file handle is always 32 bytes on the
1466		 * wire, but this server only cares about the first
1467		 * NFSRV_MAXFH bytes.
1468		 */
1469		len = NFSX_V2FH;
1470		copylen = NFSRV_MAXFH;
1471	}
1472	NFSM_DISSECT(tl, u_int32_t *, len);
1473	if ((nd->nd_flag & ND_NFSV2) && nfs_pubfhset &&
1474	    nd->nd_procnum == NFSPROC_LOOKUP &&
1475	    !NFSBCMP((caddr_t)tl, nfs_v2pubfh, NFSX_V2FH)) {
1476		nd->nd_flag |= ND_PUBLOOKUP;
1477		goto nfsmout;
1478	}
1479	NFSBCOPY(tl, (caddr_t)fhp->nfsrvfh_data, copylen);
1480	fhp->nfsrvfh_len = copylen;
1481nfsmout:
1482	NFSEXITCODE2(error, nd);
1483	return (error);
1484}
1485
1486/*
1487 * Map errnos to NFS error numbers. For Version 3 and 4 also filter out error
1488 * numbers not specified for the associated procedure.
1489 * NFSPROC_NOOP is a special case, where the high order bits of nd_repstat
1490 * should be cleared. NFSPROC_NOOP is used to return errors when a valid
1491 * RPC procedure is not involved.
1492 * Returns the error number in XDR.
1493 */
1494APPLESTATIC int
1495nfsd_errmap(struct nfsrv_descript *nd)
1496{
1497	short *defaulterrp, *errp;
1498
1499	if (!nd->nd_repstat)
1500		return (0);
1501	if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) {
1502		if (nd->nd_procnum == NFSPROC_NOOP)
1503			return (txdr_unsigned(nd->nd_repstat & 0xffff));
1504		if (nd->nd_flag & ND_NFSV3)
1505		    errp = defaulterrp = nfsrv_v3errmap[nd->nd_procnum];
1506		else if (nd->nd_repstat == EBADRPC)
1507			return (txdr_unsigned(NFSERR_BADXDR));
1508		else if (nd->nd_repstat == NFSERR_MINORVERMISMATCH ||
1509			 nd->nd_repstat == NFSERR_OPILLEGAL)
1510			return (txdr_unsigned(nd->nd_repstat));
1511		else if ((nd->nd_flag & ND_NFSV41) != 0) {
1512			if (nd->nd_repstat == EOPNOTSUPP)
1513				nd->nd_repstat = NFSERR_NOTSUPP;
1514			nd->nd_repstat = nfsrv_isannfserr(nd->nd_repstat);
1515			return (txdr_unsigned(nd->nd_repstat));
1516		} else
1517		    errp = defaulterrp = nfsrv_v4errmap[nd->nd_procnum];
1518		while (*++errp)
1519			if (*errp == nd->nd_repstat)
1520				return (txdr_unsigned(nd->nd_repstat));
1521		return (txdr_unsigned(*defaulterrp));
1522	}
1523	if (nd->nd_repstat <= NFSERR_REMOTE)
1524		return (txdr_unsigned(nfsrv_v2errmap[nd->nd_repstat - 1]));
1525	return (txdr_unsigned(NFSERR_IO));
1526}
1527
1528/*
1529 * Check to see if the error is a valid NFS one. If not, replace it with
1530 * NFSERR_IO.
1531 */
1532static u_int32_t
1533nfsrv_isannfserr(u_int32_t errval)
1534{
1535
1536	if (errval == NFSERR_OK)
1537		return (errval);
1538	if (errval >= NFSERR_BADHANDLE && errval <= NFSERR_DELEGREVOKED)
1539		return (errval);
1540	if (errval > 0 && errval <= NFSERR_REMOTE)
1541		return (nfsrv_v2errmap[errval - 1]);
1542	return (NFSERR_IO);
1543}
1544
1545/*
1546 * Check to see if setting a uid/gid is permitted when creating a new
1547 * file object. (Called when uid and/or gid is specified in the
1548 * settable attributes for V4.
1549 */
1550APPLESTATIC int
1551nfsrv_checkuidgid(struct nfsrv_descript *nd, struct nfsvattr *nvap)
1552{
1553	int error = 0;
1554
1555	/*
1556	 * If not setting either uid nor gid, it's OK.
1557	 */
1558	if (NFSVNO_NOTSETUID(nvap) && NFSVNO_NOTSETGID(nvap))
1559		goto out;
1560	if ((NFSVNO_ISSETUID(nvap) && nvap->na_uid == nfsrv_defaultuid &&
1561           enable_nobodycheck == 1)
1562	    || (NFSVNO_ISSETGID(nvap) && nvap->na_gid == nfsrv_defaultgid &&
1563           enable_nogroupcheck == 1)) {
1564		error = NFSERR_BADOWNER;
1565		goto out;
1566	}
1567	if (nd->nd_cred->cr_uid == 0)
1568		goto out;
1569	if ((NFSVNO_ISSETUID(nvap) && nvap->na_uid != nd->nd_cred->cr_uid) ||
1570	    (NFSVNO_ISSETGID(nvap) && nvap->na_gid != nd->nd_cred->cr_gid &&
1571	    !groupmember(nvap->na_gid, nd->nd_cred)))
1572		error = NFSERR_PERM;
1573
1574out:
1575	NFSEXITCODE2(error, nd);
1576	return (error);
1577}
1578
1579/*
1580 * and this routine fixes up the settable attributes for V4 if allowed
1581 * by nfsrv_checkuidgid().
1582 */
1583APPLESTATIC void
1584nfsrv_fixattr(struct nfsrv_descript *nd, vnode_t vp,
1585    struct nfsvattr *nvap, NFSACL_T *aclp, NFSPROC_T *p, nfsattrbit_t *attrbitp,
1586    struct nfsexstuff *exp)
1587{
1588	int change = 0;
1589	struct nfsvattr nva;
1590	uid_t tuid;
1591	int error;
1592	nfsattrbit_t nattrbits;
1593
1594	/*
1595	 * Maybe this should be done for V2 and 3 but it never has been
1596	 * and nobody seems to be upset, so I think it's best not to change
1597	 * the V2 and 3 semantics.
1598	 */
1599	if ((nd->nd_flag & ND_NFSV4) == 0)
1600		goto out;
1601	NFSVNO_ATTRINIT(&nva);
1602	NFSZERO_ATTRBIT(&nattrbits);
1603	tuid = nd->nd_cred->cr_uid;
1604	if (NFSISSET_ATTRBIT(attrbitp, NFSATTRBIT_OWNER) &&
1605	    NFSVNO_ISSETUID(nvap) &&
1606	    nvap->na_uid != nd->nd_cred->cr_uid) {
1607		if (nd->nd_cred->cr_uid == 0) {
1608			nva.na_uid = nvap->na_uid;
1609			change++;
1610			NFSSETBIT_ATTRBIT(&nattrbits, NFSATTRBIT_OWNER);
1611		} else {
1612			NFSCLRBIT_ATTRBIT(attrbitp, NFSATTRBIT_OWNER);
1613		}
1614	}
1615	if (NFSISSET_ATTRBIT(attrbitp, NFSATTRBIT_TIMEACCESSSET) &&
1616	    NFSVNO_ISSETATIME(nvap)) {
1617		nva.na_atime = nvap->na_atime;
1618		change++;
1619		NFSSETBIT_ATTRBIT(&nattrbits, NFSATTRBIT_TIMEACCESSSET);
1620	}
1621	if (NFSISSET_ATTRBIT(attrbitp, NFSATTRBIT_TIMEMODIFYSET) &&
1622	    NFSVNO_ISSETMTIME(nvap)) {
1623		nva.na_mtime = nvap->na_mtime;
1624		change++;
1625		NFSSETBIT_ATTRBIT(&nattrbits, NFSATTRBIT_TIMEMODIFYSET);
1626	}
1627	if (NFSISSET_ATTRBIT(attrbitp, NFSATTRBIT_OWNERGROUP) &&
1628	    NFSVNO_ISSETGID(nvap)) {
1629		if (nvap->na_gid == nd->nd_cred->cr_gid ||
1630		    groupmember(nvap->na_gid, nd->nd_cred)) {
1631			nd->nd_cred->cr_uid = 0;
1632			nva.na_gid = nvap->na_gid;
1633			change++;
1634			NFSSETBIT_ATTRBIT(&nattrbits, NFSATTRBIT_OWNERGROUP);
1635		} else {
1636			NFSCLRBIT_ATTRBIT(attrbitp, NFSATTRBIT_OWNERGROUP);
1637		}
1638	}
1639	if (change) {
1640		error = nfsvno_setattr(vp, &nva, nd->nd_cred, p, exp);
1641		if (error) {
1642			NFSCLRALL_ATTRBIT(attrbitp, &nattrbits);
1643		}
1644	}
1645	if (NFSISSET_ATTRBIT(attrbitp, NFSATTRBIT_SIZE) &&
1646	    NFSVNO_ISSETSIZE(nvap) && nvap->na_size != (u_quad_t)0) {
1647		NFSCLRBIT_ATTRBIT(attrbitp, NFSATTRBIT_SIZE);
1648	}
1649#ifdef NFS4_ACL_EXTATTR_NAME
1650	if (NFSISSET_ATTRBIT(attrbitp, NFSATTRBIT_ACL) &&
1651	    nfsrv_useacl != 0 && aclp != NULL) {
1652		if (aclp->acl_cnt > 0) {
1653			error = nfsrv_setacl(vp, aclp, nd->nd_cred, p);
1654			if (error) {
1655				NFSCLRBIT_ATTRBIT(attrbitp, NFSATTRBIT_ACL);
1656			}
1657		}
1658	} else
1659#endif
1660	NFSCLRBIT_ATTRBIT(attrbitp, NFSATTRBIT_ACL);
1661	nd->nd_cred->cr_uid = tuid;
1662
1663out:
1664	NFSEXITCODE2(0, nd);
1665}
1666
1667/*
1668 * Translate an ASCII hex digit to it's binary value. Return -1 if the
1669 * char isn't a hex digit.
1670 */
1671static char
1672nfsrv_hexdigit(char c, int *err)
1673{
1674
1675	*err = 0;
1676	if (c >= '0' && c <= '9')
1677		return (c - '0');
1678	if (c >= 'a' && c <= 'f')
1679		return (c - 'a' + ((char)10));
1680	if (c >= 'A' && c <= 'F')
1681		return (c - 'A' + ((char)10));
1682	/* Not valid ! */
1683	*err = 1;
1684	return (1);	/* BOGUS */
1685}
1686
1687/*
1688 * Check to see if NFSERR_MOVED can be returned for this op. Return 1 iff
1689 * it can be.
1690 */
1691APPLESTATIC int
1692nfsrv_errmoved(int op)
1693{
1694	short *errp;
1695
1696	errp = nfsrv_v4errmap[op];
1697	while (*errp != 0) {
1698		if (*errp == NFSERR_MOVED)
1699			return (1);
1700		errp++;
1701	}
1702	return (0);
1703}
1704
1705/*
1706 * Fill in attributes for a Referral.
1707 * (Return the number of bytes of XDR created.)
1708 */
1709APPLESTATIC int
1710nfsrv_putreferralattr(struct nfsrv_descript *nd, nfsattrbit_t *retbitp,
1711    struct nfsreferral *refp, int getattr, int *reterrp)
1712{
1713	u_int32_t *tl, *retnump;
1714	u_char *cp, *cp2;
1715	int prefixnum, retnum = 0, i, len, bitpos, rderrbit = 0, nonrefbit = 0;
1716	int fslocationsbit = 0;
1717	nfsattrbit_t tmpbits, refbits;
1718
1719	NFSREFERRAL_ATTRBIT(&refbits);
1720	if (getattr)
1721		NFSCLRBIT_ATTRBIT(&refbits, NFSATTRBIT_RDATTRERROR);
1722	else if (NFSISSET_ATTRBIT(retbitp, NFSATTRBIT_RDATTRERROR))
1723		rderrbit = 1;
1724	if (NFSISSET_ATTRBIT(retbitp, NFSATTRBIT_FSLOCATIONS))
1725		fslocationsbit = 1;
1726
1727	/*
1728	 * Check for the case where unsupported referral attributes are
1729	 * requested.
1730	 */
1731	NFSSET_ATTRBIT(&tmpbits, retbitp);
1732	NFSCLRALL_ATTRBIT(&tmpbits, &refbits);
1733	if (NFSNONZERO_ATTRBIT(&tmpbits))
1734		nonrefbit = 1;
1735
1736	if (nonrefbit && !fslocationsbit && (getattr || !rderrbit)) {
1737		*reterrp = NFSERR_MOVED;
1738		return (0);
1739	}
1740
1741	/*
1742	 * Now we can fill in the attributes.
1743	 */
1744	NFSSET_ATTRBIT(&tmpbits, retbitp);
1745	NFSCLRNOT_ATTRBIT(&tmpbits, &refbits);
1746
1747	/*
1748	 * Put out the attribute bitmap for the ones being filled in
1749	 * and get the field for the number of attributes returned.
1750	 */
1751	prefixnum = nfsrv_putattrbit(nd, &tmpbits);
1752	NFSM_BUILD(retnump, u_int32_t *, NFSX_UNSIGNED);
1753	prefixnum += NFSX_UNSIGNED;
1754
1755	/*
1756	 * Now, loop around filling in the attributes for each bit set.
1757	 */
1758	for (bitpos = 0; bitpos < NFSATTRBIT_MAX; bitpos++) {
1759	    if (NFSISSET_ATTRBIT(&tmpbits, bitpos)) {
1760		switch (bitpos) {
1761		case NFSATTRBIT_TYPE:
1762			NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
1763			*tl = txdr_unsigned(NFDIR);
1764			retnum += NFSX_UNSIGNED;
1765			break;
1766		case NFSATTRBIT_FSID:
1767			NFSM_BUILD(tl, u_int32_t *, NFSX_V4FSID);
1768			*tl++ = 0;
1769			*tl++ = txdr_unsigned(NFSV4ROOT_FSID0);
1770			*tl++ = 0;
1771			*tl = txdr_unsigned(NFSV4ROOT_REFERRAL);
1772			retnum += NFSX_V4FSID;
1773			break;
1774		case NFSATTRBIT_RDATTRERROR:
1775			NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
1776			if (nonrefbit)
1777				*tl = txdr_unsigned(NFSERR_MOVED);
1778			else
1779				*tl = 0;
1780			retnum += NFSX_UNSIGNED;
1781			break;
1782		case NFSATTRBIT_FSLOCATIONS:
1783			retnum += nfsm_strtom(nd, "/", 1);
1784			NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
1785			*tl = txdr_unsigned(refp->nfr_srvcnt);
1786			retnum += NFSX_UNSIGNED;
1787			cp = refp->nfr_srvlist;
1788			for (i = 0; i < refp->nfr_srvcnt; i++) {
1789				NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
1790				*tl = txdr_unsigned(1);
1791				retnum += NFSX_UNSIGNED;
1792				cp2 = STRCHR(cp, ':');
1793				if (cp2 != NULL)
1794					len = cp2 - cp;
1795				else
1796					len = 1;
1797				retnum += nfsm_strtom(nd, cp, len);
1798				if (cp2 != NULL)
1799					cp = cp2 + 1;
1800				cp2 = STRCHR(cp, ',');
1801				if (cp2 != NULL)
1802					len = cp2 - cp;
1803				else
1804					len = strlen(cp);
1805				retnum += nfsm_strtom(nd, cp, len);
1806				if (cp2 != NULL)
1807					cp = cp2 + 1;
1808			}
1809			break;
1810		case NFSATTRBIT_MOUNTEDONFILEID:
1811			NFSM_BUILD(tl, u_int32_t *, NFSX_HYPER);
1812			*tl++ = 0;
1813			*tl = txdr_unsigned(refp->nfr_dfileno);
1814			retnum += NFSX_HYPER;
1815			break;
1816		default:
1817			printf("EEK! Bad V4 refattr bitpos=%d\n", bitpos);
1818		};
1819	    }
1820	}
1821	*retnump = txdr_unsigned(retnum);
1822	return (retnum + prefixnum);
1823}
1824
1825/*
1826 * Parse a file name out of a request.
1827 */
1828APPLESTATIC int
1829nfsrv_parsename(struct nfsrv_descript *nd, char *bufp, u_long *hashp,
1830    NFSPATHLEN_T *outlenp)
1831{
1832	char *fromcp, *tocp, val = '\0';
1833	mbuf_t md;
1834	int i;
1835	int rem, len, error = 0, pubtype = 0, outlen = 0, percent = 0;
1836	char digit;
1837	u_int32_t *tl;
1838	u_long hash = 0;
1839
1840	if (hashp != NULL)
1841		*hashp = 0;
1842	tocp = bufp;
1843	/*
1844	 * For V4, check for lookup parent.
1845	 * Otherwise, get the component name.
1846	 */
1847	if ((nd->nd_flag & ND_NFSV4) && nd->nd_procnum == NFSV4OP_LOOKUPP) {
1848	    *tocp++ = '.';
1849	    hash += ((u_char)'.');
1850	    *tocp++ = '.';
1851	    hash += ((u_char)'.');
1852	    outlen = 2;
1853	} else {
1854	    /*
1855	     * First, get the name length.
1856	     */
1857	    NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
1858	    len = fxdr_unsigned(int, *tl);
1859	    if (len > NFS_MAXNAMLEN) {
1860		nd->nd_repstat = NFSERR_NAMETOL;
1861		error = 0;
1862		goto nfsmout;
1863	    } else if (len <= 0) {
1864		nd->nd_repstat = NFSERR_INVAL;
1865		error = 0;
1866		goto nfsmout;
1867	    }
1868
1869	    /*
1870	     * Now, copy the component name into the buffer.
1871	     */
1872	    fromcp = nd->nd_dpos;
1873	    md = nd->nd_md;
1874	    rem = NFSMTOD(md, caddr_t) + mbuf_len(md) - fromcp;
1875	    for (i = 0; i < len; i++) {
1876		while (rem == 0) {
1877			md = mbuf_next(md);
1878			if (md == NULL) {
1879				error = EBADRPC;
1880				goto nfsmout;
1881			}
1882			fromcp = NFSMTOD(md, caddr_t);
1883			rem = mbuf_len(md);
1884		}
1885		if (*fromcp == '\0') {
1886			nd->nd_repstat = EACCES;
1887			error = 0;
1888			goto nfsmout;
1889		}
1890		/*
1891		 * For lookups on the public filehandle, do some special
1892		 * processing on the name. (The public file handle is the
1893		 * root of the public file system for this server.)
1894		 */
1895		if (nd->nd_flag & ND_PUBLOOKUP) {
1896			/*
1897			 * If the first char is ASCII, it is a canonical
1898			 * path, otherwise it is a native path. (RFC2054
1899			 * doesn't actually state what it is if the first
1900			 * char isn't ASCII or 0x80, so I assume native.)
1901			 * pubtype == 1 -> native path
1902			 * pubtype == 2 -> canonical path
1903			 */
1904			if (i == 0) {
1905				if (*fromcp & 0x80) {
1906					/*
1907					 * Since RFC2054 doesn't indicate
1908					 * that a native path of just 0x80
1909					 * isn't allowed, I'll replace the
1910					 * 0x80 with '/' instead of just
1911					 * throwing it away.
1912					 */
1913					*fromcp = '/';
1914					pubtype = 1;
1915				} else {
1916					pubtype = 2;
1917				}
1918			}
1919			/*
1920			 * '/' only allowed in a native path
1921			 */
1922			if (*fromcp == '/' && pubtype != 1) {
1923				nd->nd_repstat = EACCES;
1924				error = 0;
1925				goto nfsmout;
1926			}
1927
1928			/*
1929			 * For the special case of 2 hex digits after a
1930			 * '%' in an absolute path, calculate the value.
1931			 * percent == 1 -> indicates "get first hex digit"
1932			 * percent == 2 -> indicates "get second hex digit"
1933			 */
1934			if (percent > 0) {
1935				digit = nfsrv_hexdigit(*fromcp, &error);
1936				if (error) {
1937					nd->nd_repstat = EACCES;
1938					error = 0;
1939					goto nfsmout;
1940				}
1941				if (percent == 1) {
1942					val = (digit << 4);
1943					percent = 2;
1944				} else {
1945					val += digit;
1946					percent = 0;
1947					*tocp++ = val;
1948					hash += ((u_char)val);
1949					outlen++;
1950				}
1951			} else {
1952				if (*fromcp == '%' && pubtype == 2) {
1953					/*
1954					 * Must be followed by 2 hex digits
1955					 */
1956					if ((len - i) < 3) {
1957						nd->nd_repstat = EACCES;
1958						error = 0;
1959						goto nfsmout;
1960					}
1961					percent = 1;
1962				} else {
1963					*tocp++ = *fromcp;
1964					hash += ((u_char)*fromcp);
1965					outlen++;
1966				}
1967			}
1968		} else {
1969			/*
1970			 * Normal, non lookup on public, name.
1971			 */
1972			if (*fromcp == '/') {
1973				if (nd->nd_flag & ND_NFSV4)
1974					nd->nd_repstat = NFSERR_BADNAME;
1975				else
1976					nd->nd_repstat = EACCES;
1977				error = 0;
1978				goto nfsmout;
1979			}
1980			hash += ((u_char)*fromcp);
1981			*tocp++ = *fromcp;
1982			outlen++;
1983		}
1984		fromcp++;
1985		rem--;
1986	    }
1987	    nd->nd_md = md;
1988	    nd->nd_dpos = fromcp;
1989	    i = NFSM_RNDUP(len) - len;
1990	    if (i > 0) {
1991		if (rem >= i) {
1992			nd->nd_dpos += i;
1993		} else {
1994			error = nfsm_advance(nd, i, rem);
1995			if (error)
1996				goto nfsmout;
1997		}
1998	    }
1999
2000	    /*
2001	     * For v4, don't allow lookups of '.' or '..' and
2002	     * also check for non-utf8 strings.
2003	     */
2004	    if (nd->nd_flag & ND_NFSV4) {
2005		if ((outlen == 1 && bufp[0] == '.') ||
2006		    (outlen == 2 && bufp[0] == '.' &&
2007		     bufp[1] == '.')) {
2008		    nd->nd_repstat = NFSERR_BADNAME;
2009		    error = 0;
2010		    goto nfsmout;
2011		}
2012		if (disable_checkutf8 == 0 &&
2013		    nfsrv_checkutf8((u_int8_t *)bufp, outlen)) {
2014		    nd->nd_repstat = NFSERR_INVAL;
2015		    error = 0;
2016		    goto nfsmout;
2017		}
2018	    }
2019	}
2020	*tocp = '\0';
2021	*outlenp = (size_t)outlen;
2022	if (hashp != NULL)
2023		*hashp = hash;
2024nfsmout:
2025	NFSEXITCODE2(error, nd);
2026	return (error);
2027}
2028
2029void
2030nfsd_init(void)
2031{
2032	int i;
2033	static int inited = 0;
2034
2035	if (inited)
2036		return;
2037	inited = 1;
2038
2039	/*
2040	 * Initialize client queues. Don't free/reinitialize
2041	 * them when nfsds are restarted.
2042	 */
2043	nfsclienthash = malloc(sizeof(struct nfsclienthashhead) *
2044	    nfsrv_clienthashsize, M_NFSDCLIENT, M_WAITOK | M_ZERO);
2045	for (i = 0; i < nfsrv_clienthashsize; i++)
2046		LIST_INIT(&nfsclienthash[i]);
2047	nfslockhash = malloc(sizeof(struct nfslockhashhead) *
2048	    nfsrv_lockhashsize, M_NFSDLOCKFILE, M_WAITOK | M_ZERO);
2049	for (i = 0; i < nfsrv_lockhashsize; i++)
2050		LIST_INIT(&nfslockhash[i]);
2051	nfssessionhash = malloc(sizeof(struct nfssessionhash) *
2052	    nfsrv_sessionhashsize, M_NFSDSESSION, M_WAITOK | M_ZERO);
2053	for (i = 0; i < nfsrv_sessionhashsize; i++) {
2054		mtx_init(&nfssessionhash[i].mtx, "nfssm", NULL, MTX_DEF);
2055		LIST_INIT(&nfssessionhash[i].list);
2056	}
2057
2058	/* and the v2 pubfh should be all zeros */
2059	NFSBZERO(nfs_v2pubfh, NFSX_V2FH);
2060}
2061
2062/*
2063 * Check the v4 root exports.
2064 * Return 0 if ok, 1 otherwise.
2065 */
2066int
2067nfsd_checkrootexp(struct nfsrv_descript *nd)
2068{
2069
2070	if ((nd->nd_flag & (ND_GSS | ND_EXAUTHSYS)) == ND_EXAUTHSYS)
2071		return (0);
2072	if ((nd->nd_flag & (ND_GSSINTEGRITY | ND_EXGSSINTEGRITY)) ==
2073	    (ND_GSSINTEGRITY | ND_EXGSSINTEGRITY))
2074		return (0);
2075	if ((nd->nd_flag & (ND_GSSPRIVACY | ND_EXGSSPRIVACY)) ==
2076	    (ND_GSSPRIVACY | ND_EXGSSPRIVACY))
2077		return (0);
2078	if ((nd->nd_flag & (ND_GSS | ND_GSSINTEGRITY | ND_GSSPRIVACY |
2079	     ND_EXGSS)) == (ND_GSS | ND_EXGSS))
2080		return (0);
2081	return (1);
2082}
2083
2084/*
2085 * Parse the first part of an NFSv4 compound to find out what the minor
2086 * version# is.
2087 */
2088void
2089nfsd_getminorvers(struct nfsrv_descript *nd, u_char *tag, u_char **tagstrp,
2090    int *taglenp, u_int32_t *minversp)
2091{
2092	uint32_t *tl;
2093	int error = 0, taglen = -1;
2094	u_char *tagstr = NULL;
2095
2096	NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED);
2097	taglen = fxdr_unsigned(int, *tl);
2098	if (taglen < 0 || taglen > NFSV4_OPAQUELIMIT) {
2099		error = EBADRPC;
2100		goto nfsmout;
2101	}
2102	if (taglen <= NFSV4_SMALLSTR)
2103		tagstr = tag;
2104	else
2105		tagstr = malloc(taglen + 1, M_TEMP, M_WAITOK);
2106	error = nfsrv_mtostr(nd, tagstr, taglen);
2107	if (error != 0)
2108		goto nfsmout;
2109	NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED);
2110	*minversp = fxdr_unsigned(u_int32_t, *tl);
2111	*tagstrp = tagstr;
2112	if (*minversp == NFSV41_MINORVERSION)
2113		nd->nd_flag |= ND_NFSV41;
2114nfsmout:
2115	if (error != 0) {
2116		if (tagstr != NULL && taglen > NFSV4_SMALLSTR)
2117			free(tagstr, M_TEMP);
2118		taglen = -1;
2119	}
2120	*taglenp = taglen;
2121}
2122
2123