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