sys/fs/nfsserver/nfs_nfsdsubs.c

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