6/sys/nfs4client/nfs4_subs.c

   1 /* $FreeBSD$ */
   2 /* $Id: nfs4_subs.c,v 1.52 2003/11/05 14:58:59 rees Exp $ */
   3
   4 /*-
   5  * copyright (c) 2003
   6  * the regents of the university of michigan
   7  * all rights reserved
   8  *
   9  * permission is granted to use, copy, create derivative works and redistribute
  10  * this software and such derivative works for any purpose, so long as the name
  11  * of the university of michigan is not used in any advertising or publicity
  12  * pertaining to the use or distribution of this software without specific,
  13  * written prior authorization.  if the above copyright notice or any other
  14  * identification of the university of michigan is included in any copy of any
  15  * portion of this software, then the disclaimer below must also be included.
  16  *
  17  * this software is provided as is, without representation from the university
  18  * of michigan as to its fitness for any purpose, and without warranty by the
  19  * university of michigan of any kind, either express or implied, including
  20  * without limitation the implied warranties of merchantability and fitness for
  21  * a particular purpose. the regents of the university of michigan shall not be
  22  * liable for any damages, including special, indirect, incidental, or
  23  * consequential damages, with respect to any claim arising out of or in
  24  * connection with the use of the software, even if it has been or is hereafter
  25  * advised of the possibility of such damages.
  26  */
  27
  28 #include <sys/cdefs.h>
  29
  30 #include <sys/param.h>
  31 #include <sys/systm.h>
  32 #include <sys/kernel.h>
  33 #include <sys/bio.h>
  34 #include <sys/buf.h>
  35 #include <sys/proc.h>
  36 #include <sys/mount.h>
  37 #include <sys/vnode.h>
  38 #include <sys/namei.h>
  39 #include <sys/mbuf.h>
  40 #include <sys/socket.h>
  41 #include <sys/stat.h>
  42 #include <sys/malloc.h>
  43 #include <sys/sysent.h>
  44 #include <sys/syscall.h>
  45 #include <sys/sysproto.h>
  46 #include <sys/fcntl.h>
  47
  48 #include <machine/stdarg.h>
  49
  50 #include <vm/vm.h>
  51 #include <vm/vm_object.h>
  52 #include <vm/vm_extern.h>
  53 #include <vm/uma.h>
  54
  55 #include <rpc/rpcclnt.h>
  56
  57 #include <nfs/rpcv2.h>
  58 #include <nfs/nfsproto.h>
  59 #include <nfsclient/nfs.h>
  60 #include <nfs4client/nfs4.h>
  61 #include <nfsclient/nfsnode.h>
  62 #include <nfsclient/nfsmount.h>
  63 #include <nfs/xdr_subs.h>
  64 #include <nfsclient/nfsm_subs.h>
  65
  66 #include <nfs4client/nfs4_dev.h>
  67 #include <nfs4client/nfs4_idmap.h>
  68 #include <nfs4client/nfs4m_subs.h>
  69
  70 #include <netinet/in.h>
  71
  72 #define NFSM_DISSECT(s) do {                                                    \
  73         tl = nfsm_dissect_xx((s), md, dpos);                                    \
  74         if (tl == NULL) {                                                       \
  75                 printf("NFSM_DISSECT error; allocation (%s/%d) (%s:%d)\n", #s, s, __FILE__, __LINE__);  \
  76                 return (EBADRPC);                                               \
  77         }                                                                       \
  78 } while (0)
  79
  80 #define NFSM_ADV(s) do {                                                \
  81         t1 = nfsm_adv_xx((s), md, dpos);                                \
  82         if (t1 != 0) {                                                  \
  83                 printf("NFSM_ADV error; allocation (%s/%d) (%s:%d)\n", #s, s, __FILE__, __LINE__);      \
  84                 return (EBADRPC);                                       \
  85         }                                                               \
  86 } while (0)
  87
  88 #define NFSM_MTOTIME(t) do {                            \
  89         NFSM_DISSECT(3 * NFSX_UNSIGNED);                \
  90         (t).tv_sec = fxdr_hyper(tl);                    \
  91         tl += 2;                                        \
  92         (t).tv_nsec = fxdr_unsigned(long, *tl++);       \
  93 } while (0)
  94
  95 static uint32_t __fsinfo_bm[2], __fsattr_bm[2], __getattr_bm[2], __readdir_bm[2];
  96
  97 nfsv4bitmap nfsv4_fsinfobm = { 2, __fsinfo_bm };
  98 nfsv4bitmap nfsv4_fsattrbm = { 2, __fsattr_bm };
  99 nfsv4bitmap nfsv4_getattrbm = { 2, __getattr_bm };
 100 nfsv4bitmap nfsv4_readdirbm = { 2, __readdir_bm };
 101
 102 /* Helper routines */
 103 int nfsm_v4build_attrs_xx(struct vattr *, struct mbuf **, caddr_t *);
 104 int nfsm_v4dissect_changeinfo_xx(nfsv4changeinfo *,  struct mbuf **, caddr_t *);
 105
 106 void
 107 nfsm_v4init(void)
 108 {
 109
 110         /* Set up bitmasks */
 111         FA4_SET(FA4_FSID, __fsinfo_bm);
 112         FA4_SET(FA4_MAXREAD, __fsinfo_bm);
 113         FA4_SET(FA4_MAXWRITE, __fsinfo_bm);
 114         FA4_SET(FA4_LEASE_TIME, __fsinfo_bm);
 115
 116         FA4_SET(FA4_FSID, __fsattr_bm);
 117         FA4_SET(FA4_FILES_FREE, __fsattr_bm);
 118         FA4_SET(FA4_FILES_TOTAL, __fsattr_bm);
 119         FA4_SET(FA4_SPACE_AVAIL, __fsattr_bm);
 120         FA4_SET(FA4_SPACE_FREE, __fsattr_bm);
 121         FA4_SET(FA4_SPACE_TOTAL, __fsattr_bm);
 122
 123         FA4_SET(FA4_TYPE, __getattr_bm);
 124         FA4_SET(FA4_FSID, __getattr_bm);
 125         FA4_SET(FA4_SIZE, __getattr_bm);
 126         FA4_SET(FA4_MODE, __getattr_bm);
 127         FA4_SET(FA4_RAWDEV, __getattr_bm);
 128         FA4_SET(FA4_NUMLINKS, __getattr_bm);
 129         FA4_SET(FA4_OWNER, __getattr_bm);
 130         FA4_SET(FA4_OWNER_GROUP, __getattr_bm);
 131         FA4_SET(FA4_FILEID, __getattr_bm);
 132         FA4_SET(FA4_TIME_MODIFY, __getattr_bm);
 133         FA4_SET(FA4_TIME_ACCESS, __getattr_bm);
 134
 135         FA4_SET(FA4_TYPE, __readdir_bm);
 136         FA4_SET(FA4_FSID, __readdir_bm);
 137         FA4_SET(FA4_FILEID, __readdir_bm);
 138         FA4_SET(FA4_RDATTR_ERROR, __readdir_bm);
 139 }
 140
 141 /*
 142  * Util
 143  */
 144
 145 uint32_t
 146 nfs_v4fileid4_to_fileid(uint64_t fid)
 147 {
 148         return ((uint32_t)((fid >> 32) | fid));
 149 }
 150
 151 void
 152 nfs_v4initcompound(struct nfs4_compound *cp)
 153 {
 154         bzero(cp, sizeof(*cp));
 155 }
 156
 157 /*
 158  * Build/dissect XDR buffer with a format string.
 159  *
 160  *    u - unsigned
 161  *    h - hyper
 162  *    s - stringlength, string
 163  *    k - skip length (bytes)
 164  *    a - arraylength, componentlenght, array
 165  *    o - opaque fix length
 166  *    O - opaque var length in bytes
 167  */
 168
 169 void
 170 nfsm_buildf_xx(struct mbuf **mb, caddr_t *bpos, char *fmt, ...)
 171 {
 172         uint32_t *tl, t1, len, uval;
 173         uint64_t hval;
 174         va_list args;
 175         char *p, *which;
 176
 177         va_start(args, fmt);
 178         for (which = fmt; *which != '\0'; which++)
 179                 switch (*which) {
 180                 case 'u':       /* Unsigned */
 181                         tl = nfsm_build_xx(NFSX_UNSIGNED, mb, bpos);
 182                         uval = va_arg(args, uint32_t);
 183                         *tl++ = txdr_unsigned(uval);
 184                         break;
 185                 case 'h':       /* Hyper */
 186                         tl = nfsm_build_xx(2 * NFSX_UNSIGNED, mb, bpos);
 187                         hval = va_arg(args, uint64_t);
 188                         txdr_hyper(hval, tl);
 189                         break;
 190                 case 'o':       /* Fixed-length opaque */
 191                         len = va_arg(args, uint32_t);
 192                         p = va_arg(args, char *);
 193                         tl = nfsm_build_xx(nfsm_rndup(len), mb, bpos);
 194                         bcopy(p, tl, len);
 195                         break;
 196                 case 'O':       /* Variable-length opaque */
 197                 case 's':       /* String */
 198                         len = va_arg(args, uint32_t);
 199                         p = va_arg(args, char *);
 200                         t1 = nfsm_strtom_xx(p, len, len, mb, bpos);
 201                         break;
 202                 case 'k':       /* Skip */
 203                         len = va_arg(args, uint32_t);
 204                         nfsm_build_xx(nfsm_rndup(len), mb, bpos);
 205                         break;
 206                 default:
 207                         panic("Invalid buildf string %s[%c]", fmt, *which);
 208                         break;
 209                 }
 210         va_end(args);
 211 }
 212
 213 int
 214 nfsm_dissectf_xx(struct mbuf **md, caddr_t *dpos, char *fmt, ...)
 215 {
 216         uint32_t *tl, t1, len, *uval;
 217         uint64_t *hval;
 218         va_list args;
 219         char *p, *which;
 220
 221         va_start(args, fmt);
 222         for (which = fmt; *which != '\0'; which++)
 223                 switch (*which) {
 224                 case 'u':       /* Unsigned */
 225                         tl = nfsm_dissect_xx(NFSX_UNSIGNED, md, dpos);
 226                         if (tl == NULL)
 227                                 return (EBADRPC);
 228                         uval = va_arg(args, uint32_t *);
 229                         *uval = fxdr_unsigned(uint32_t, *tl++);
 230                         break;
 231                 case 'h':       /* Hyper */
 232                         tl = nfsm_dissect_xx(2 * NFSX_UNSIGNED, md, dpos);
 233                         if (tl == NULL)
 234                                 return (EBADRPC);
 235                         hval = va_arg(args, uint64_t *);
 236                         *hval = fxdr_hyper(tl);
 237                         break;
 238                 case 'o':       /* Fixed-length opaque */
 239                         len = va_arg(args, uint32_t);
 240                         p = va_arg(args, void *);
 241                         tl = nfsm_dissect_xx(nfsm_rndup(len), md, dpos);
 242                         if (tl == NULL)
 243                                 return (EBADRPC);
 244                         bcopy(tl, p, len);
 245                         break;
 246                 case 'O':       /* Variable-length opaque */
 247                 case 's':       /* String */
 248                         len = va_arg(args, uint32_t);
 249                         p = va_arg(args, char *);
 250                         tl = nfsm_dissect_xx(nfsm_rndup(len), md, dpos);
 251                         if (tl == NULL)
 252                                 return (EBADRPC);
 253                         bcopy(tl, p, len);
 254                         break;
 255                 case 'k':       /* Skip bytes */
 256                         len = va_arg(args, uint32_t);
 257                         t1 = nfsm_adv_xx(nfsm_rndup(len), md, dpos);
 258                         break;
 259                 default:
 260                         panic("Invalid dissectf string %s[%c]", fmt, *which);
 261                         break;
 262                 }
 263         va_end(args);
 264
 265         return (0);
 266 }
 267
 268 /*
 269  * XXX - There are a few problems with the way the postops are places
 270  * in the code.  Ideally, they should be taken care of immediately, as
 271  * to avoid uneceesary waits for mutexes, but then we would be
 272  * introducing even more complexity by having to handle two separate
 273  * cases.  Also, since they are placed at the end of the vnops', there
 274  * may be operations which sleep in between, further extending this
 275  * wait.  It is conceivable that there is a deadlock condition there,
 276  * too.
 277  *
 278  * Also, for vnops that do multiple operations, it's inconvenient
 279  * since on error, individual decoding will got nfsmout.
 280  */
 281
 282 int
 283 nfs_v4postop(struct nfs4_compound *cp, int status)
 284 {
 285         struct nfs4_fctx *fcp = cp->fcp;
 286
 287         /*
 288          * XXX does the previous result need to be stores with the
 289          * lockowner?  ack, spec is unclear ..
 290          */
 291
 292         if (fcp != NULL)
 293                 if (cp->seqidused < cp->rep_nops ||
 294                     (cp->seqidused + 1 == cp->rep_nops &&
 295                         NFS4_SEQIDMUTATINGERROR(status)))
 296                         fcp->lop->lo_seqid++;
 297
 298         return (status);
 299 }
 300
 301 int
 302 nfs_v4handlestatus(int status, struct nfs4_compound *cp)
 303 {
 304         return (status);
 305 }
 306
 307 /*
 308  * Initial setup of compound.
 309  */
 310
 311 int
 312 nfsm_v4build_compound_xx(struct nfs4_compound *cp, char *tag,
 313     struct mbuf **mb, caddr_t *bpos)
 314 {
 315         uint32_t t1, *tl, siz;
 316
 317         /* Tag */
 318         siz = strlen(tag);
 319         t1 = nfsm_rndup(siz) + NFSX_UNSIGNED;
 320         if (t1 <= M_TRAILINGSPACE(*mb)) {
 321                 tl = nfsm_build_xx(t1, mb, bpos);
 322                 *tl++ = txdr_unsigned(siz);
 323                 *(tl + ((t1 >> 2) - 2)) = 0;
 324                 bcopy(tag, tl, siz);
 325         } else {
 326                 t1 = nfsm_strtmbuf(mb, bpos, (const char *)tag, siz);
 327                 if (t1 != 0)
 328                         return (t1);
 329         }
 330
 331         /* Minor version and argarray*/
 332         tl = nfsm_build_xx(2 * NFSX_UNSIGNED, mb, bpos);
 333         *tl++ = txdr_unsigned(NFS4_MINOR_VERSION);
 334         /* Save for backfill */
 335         cp->req_nopsp = tl;
 336         *tl = txdr_unsigned(0);
 337
 338         cp->curvp = NULL;
 339         cp->savevp = NULL;
 340
 341         return (0);
 342 }
 343
 344 /*
 345  * XXX
 346  * - backfill for stateid, and such
 347  */
 348 int
 349 nfsm_v4build_finalize_xx(struct nfs4_compound *cp, struct mbuf **mb, caddr_t *bpos)
 350 {
 351         *cp->req_nopsp = txdr_unsigned(cp->req_nops);
 352
 353         return (0);
 354 }
 355
 356 int
 357 nfsm_v4build_putfh_xx(struct nfs4_compound *cp, struct vnode *vp,
 358     struct mbuf **mb, caddr_t *bpos)
 359 {
 360         uint32_t t1;
 361
 362         /* Op */
 363         nfsm_buildf_xx(mb, bpos, "u", NFSV4OP_PUTFH);
 364
 365         /* FH */
 366         t1 = nfsm_fhtom_xx(vp, 1, mb, bpos);
 367         if (t1 != 0)
 368                 return (t1);
 369
 370         cp->req_nops++;
 371         cp->curvp = vp;
 372
 373         return (0);
 374 }
 375
 376 int
 377 nfsm_v4build_putfh_nv_xx(struct nfs4_compound *cp, struct nfs4_oparg_getfh *gfh,
 378     struct mbuf **mb, caddr_t *bpos)
 379 {
 380         nfsm_buildf_xx(mb, bpos, "uuo",
 381             NFSV4OP_PUTFH,
 382             gfh->fh_len,
 383             gfh->fh_len,
 384             &gfh->fh_val);
 385
 386         cp->req_nops++;
 387
 388         return (0);
 389 }
 390
 391 int
 392 nfsm_v4build_simple_xx(struct nfs4_compound *cp, uint32_t op,
 393     struct mbuf **mb, caddr_t *bpos)
 394 {
 395         nfsm_buildf_xx(mb, bpos, "u", op);
 396
 397         cp->req_nops++;
 398
 399         return (0);
 400 }
 401
 402 int
 403 nfsm_v4build_getattr_xx(struct nfs4_compound *cp, struct nfs4_oparg_getattr *ga,
 404     struct mbuf **mb, caddr_t *bpos)
 405 {
 406         int i;
 407
 408         /* Op + bitmap length + bitmap */
 409         nfsm_buildf_xx(mb, bpos, "uu", NFSV4OP_GETATTR, ga->bm->bmlen);
 410         for (i = 0; i < ga->bm->bmlen; i++)
 411                 nfsm_buildf_xx(mb, bpos, "u", ga->bm->bmval[i]);
 412
 413         ga->vp = cp->curvp;
 414         cp->req_nops++;
 415
 416         return (0);
 417 }
 418
 419 int
 420 nfsm_v4build_setattr_xx(struct nfs4_compound *cp, struct vattr *vap,
 421     struct nfs4_fctx *fcp, struct mbuf **mb, caddr_t *bpos)
 422 {
 423         int error;
 424         static char zero_stateid[NFSX_V4STATEID];
 425
 426         nfsm_buildf_xx(mb, bpos, "uo",
 427             NFSV4OP_SETATTR,
 428             NFSX_V4STATEID, fcp ? fcp->stateid : zero_stateid);
 429         error = nfsm_v4build_attrs_xx(vap, mb, bpos);
 430         if (error == 0)
 431                 cp->req_nops++;
 432
 433         return (error);
 434 }
 435
 436 int
 437 nfsm_v4build_getfh_xx(struct nfs4_compound *cp, struct nfs4_oparg_getfh *gfh,
 438     struct mbuf **mb, caddr_t *bpos)
 439 {
 440         nfsm_buildf_xx(mb, bpos, "u", NFSV4OP_GETFH);
 441
 442         gfh->vp = cp->curvp;
 443         cp->req_nops++;
 444
 445         return (0);
 446 }
 447
 448 int
 449 nfsm_v4build_lookup_xx(struct nfs4_compound *cp, struct nfs4_oparg_lookup *l,
 450     struct mbuf **mb, caddr_t *bpos)
 451 {
 452         nfsm_buildf_xx(mb, bpos, "us", NFSV4OP_LOOKUP, l->namelen, l->name);
 453
 454         cp->curvp = l->vp;
 455         cp->req_nops++;
 456
 457         return (0);
 458 }
 459
 460 int
 461 nfsm_v4build_setclientid_xx(struct nfs4_compound *cp,
 462     struct nfs4_oparg_setclientid *sci, struct mbuf **mb, caddr_t *bpos)
 463 {
 464         struct timeval tv;
 465
 466         microtime(&tv);
 467
 468         nfsm_buildf_xx(mb, bpos, "uuusussu",
 469             NFSV4OP_SETCLIENTID,
 470             tv.tv_sec, tv.tv_usec,
 471             sci->namelen, sci->name,
 472             sci->cb_prog,
 473             sci->cb_netidlen, sci->cb_netid,
 474             sci->cb_univaddrlen, sci->cb_univaddr,
 475             0xCA11BACC);
 476
 477         cp->req_nops++;
 478
 479         return (0);
 480 }
 481
 482 int
 483 nfsm_v4build_setclientid_confirm_xx(struct nfs4_compound *cp,
 484     struct nfs4_oparg_setclientid *sci, struct mbuf **mb, caddr_t *bpos)
 485 {
 486         nfsm_buildf_xx(mb, bpos, "uho",
 487             NFSV4OP_SETCLIENTID_CONFIRM,
 488             sci->clientid,
 489             sizeof(sci->verf), sci->verf);
 490
 491         cp->req_nops++;
 492
 493         return (0);
 494 }
 495
 496 int
 497 nfsm_v4build_open_xx(struct nfs4_compound *cp, struct nfs4_oparg_open *op,
 498     struct mbuf **mb, caddr_t *bpos)
 499 {
 500         int error = 0;
 501         struct nfs4_lowner *lop = op->fcp->lop;
 502
 503         nfsm_buildf_xx(mb, bpos, "uuuuhuu",
 504             NFSV4OP_OPEN,
 505             lop->lo_seqid,
 506             op->flags & O_ACCMODE,
 507             NFSV4OPENSHARE_DENY_NONE,
 508             cp->nmp->nm_clientid,
 509             4, lop->lo_id);
 510
 511         if (op->flags & O_CREAT) {
 512                 nfsm_buildf_xx(mb, bpos, "u", OTCREATE);
 513                 /* openflag4: mode */
 514                 nfsm_buildf_xx(mb, bpos, "u", CMUNCHECKED);
 515                 /* openflag4: createattrs... */
 516                 if (op->vap != NULL) {
 517                         if (op->flags & O_TRUNC)
 518                                 op->vap->va_size = 0;
 519                         error = nfsm_v4build_attrs_xx(op->vap, mb, bpos);
 520                         if (error != 0)
 521                                 return (error);
 522                 } else
 523                         nfsm_buildf_xx(mb, bpos, "uu", 0, 0);
 524         } else
 525                 nfsm_buildf_xx(mb, bpos, "u", OTNOCREATE);
 526
 527         nfsm_buildf_xx(mb, bpos, "us", op->ctype,
 528             op->cnp->cn_namelen, op->cnp->cn_nameptr);
 529
 530         cp->seqidused = cp->req_nops++;
 531         cp->fcp = op->fcp;
 532
 533         return (error);
 534 }
 535
 536 /*
 537  * XXX
 538  * - Wait on recovery
 539  */
 540 int
 541 nfsm_v4build_open_confirm_xx(struct nfs4_compound *cp, struct nfs4_oparg_open *op,
 542     struct mbuf **mb, caddr_t *bpos)
 543 {
 544         nfsm_buildf_xx(mb, bpos, "uou",
 545             NFSV4OP_OPEN_CONFIRM,
 546             NFSX_V4STATEID, op->fcp->stateid,
 547             op->fcp->lop->lo_seqid);
 548
 549         cp->seqidused = cp->req_nops++;
 550         cp->fcp = op->fcp;
 551
 552         return (0);
 553 }
 554
 555 /*
 556  * XXX
 557  * - Wait on recovery
 558  */
 559 int
 560 nfsm_v4build_close_xx(struct nfs4_compound *cp, struct nfs4_fctx *fcp,
 561     struct mbuf **mb, caddr_t *bpos)
 562 {
 563         struct nfs4_lowner *lop = fcp->lop;
 564
 565         nfsm_buildf_xx(mb, bpos, "uuo",
 566             NFSV4OP_CLOSE,
 567             lop->lo_seqid,
 568             NFSX_V4STATEID, fcp->stateid);
 569
 570         cp->seqidused = cp->req_nops++;
 571         cp->fcp = fcp;
 572
 573         return (0);
 574 }
 575
 576 int
 577 nfsm_v4build_access_xx(struct nfs4_compound *cp, struct nfs4_oparg_access *acc,
 578     struct mbuf **mb, caddr_t *bpos)
 579 {
 580         nfsm_buildf_xx(mb, bpos, "uu", NFSV4OP_ACCESS, acc->mode);
 581         cp->req_nops++;
 582
 583         return (0);
 584 }
 585
 586 int
 587 nfsm_v4build_read_xx(struct nfs4_compound *cp, struct nfs4_oparg_read *r,
 588     struct mbuf **mb, caddr_t *bpos)
 589 {
 590         nfsm_buildf_xx(mb, bpos, "uohu",
 591             NFSV4OP_READ,
 592             NFSX_V4STATEID, r->fcp->stateid,
 593             r->off,
 594             r->maxcnt);
 595         cp->req_nops++;
 596
 597         return (0);
 598 }
 599
 600 int
 601 nfsm_v4build_write_xx(struct nfs4_compound *cp, struct nfs4_oparg_write *w,
 602     struct mbuf **mb, caddr_t *bpos)
 603 {
 604         nfsm_buildf_xx(mb, bpos, "uohuu",
 605             NFSV4OP_WRITE,
 606             NFSX_V4STATEID, w->fcp->stateid,
 607             w->off,
 608             w->stable,
 609             w->cnt);
 610         cp->req_nops++;
 611         return (nfsm_uiotombuf(w->uiop, mb, w->cnt, bpos));
 612 }
 613
 614 int
 615 nfsm_v4build_commit_xx(struct nfs4_compound *cp, struct nfs4_oparg_commit *c,
 616     struct mbuf **mb, caddr_t *bpos)
 617 {
 618         nfsm_buildf_xx(mb, bpos, "uhu", NFSV4OP_COMMIT, c->start, c->len);
 619         cp->req_nops++;
 620
 621         return (0);
 622 }
 623
 624 int
 625 nfsm_v4build_readdir_xx(struct nfs4_compound *cp, struct nfs4_oparg_readdir *r,
 626     struct mbuf **mb, caddr_t *bpos)
 627 {
 628         int i;
 629
 630         nfsm_buildf_xx(mb, bpos, "uhouuu",
 631             NFSV4OP_READDIR,
 632             r->cookie,
 633             sizeof(r->verf), r->verf,
 634             r->cnt >> 4,        /* meaningless "dircount" field */
 635             r->cnt,
 636             r->bm->bmlen);
 637
 638         for (i = 0; i < r->bm->bmlen; i++)
 639                 nfsm_buildf_xx(mb, bpos, "u", r->bm->bmval[i]);
 640
 641         cp->req_nops++;
 642
 643         return (0);
 644 }
 645
 646 int
 647 nfsm_v4build_renew_xx(struct nfs4_compound *cp, uint64_t cid,
 648     struct mbuf **mb, caddr_t *bpos)
 649 {
 650         nfsm_buildf_xx(mb, bpos, "uh", NFSV4OP_RENEW, cid);
 651         cp->req_nops++;
 652
 653         return (0);
 654 }
 655
 656 int
 657 nfsm_v4build_create_xx(struct nfs4_compound *cp, struct nfs4_oparg_create *c,
 658     struct mbuf **mb, caddr_t *bpos)
 659 {
 660         uint32_t t1;
 661
 662         nfsm_buildf_xx(mb, bpos, "uu", NFSV4OP_CREATE, c->type);
 663
 664         if (c->type == NFLNK)
 665                 /* XXX strlen */
 666                 nfsm_buildf_xx(mb, bpos, "s", strlen(c->linktext), c->linktext);
 667         else if (c->type == NFCHR || c->type == NFBLK)
 668                 nfsm_buildf_xx(mb, bpos, "uu",
 669                     umajor(c->vap->va_rdev), uminor(c->vap->va_rdev));
 670
 671         /* Name */
 672         nfsm_buildf_xx(mb, bpos, "s", c->namelen, c->name);
 673
 674         /* Attributes */
 675         t1 = nfsm_v4build_attrs_xx(c->vap, mb, bpos);
 676         if (t1 != 0)
 677                 return (t1);
 678
 679         cp->req_nops++;
 680
 681         return (0);
 682 }
 683
 684 int
 685 nfsm_v4build_rename_xx(struct nfs4_compound *cp, struct nfs4_oparg_rename *r,
 686     struct mbuf **mb, caddr_t *bpos)
 687 {
 688         nfsm_buildf_xx(mb, bpos, "uss", NFSV4OP_RENAME, r->fnamelen, r->fname,
 689             r->tnamelen, r->tname);
 690
 691         cp->req_nops++;
 692
 693         return (0);
 694 }
 695
 696 int
 697 nfsm_v4build_link_xx(struct nfs4_compound *cp, struct nfs4_oparg_link *l,
 698     struct mbuf **mb, caddr_t *bpos)
 699 {
 700         nfsm_buildf_xx(mb, bpos, "us", NFSV4OP_LINK, l->namelen, l->name);
 701
 702         cp->req_nops++;
 703
 704         return (0);
 705 }
 706
 707 int
 708 nfsm_v4build_remove_xx(struct nfs4_compound *cp, const char *name, u_int namelen,
 709     struct mbuf **mb, caddr_t *bpos)
 710 {
 711         nfsm_buildf_xx(mb, bpos, "us", NFSV4OP_REMOVE, namelen, name);
 712
 713         cp->req_nops++;
 714
 715         return (0);
 716 }
 717
 718 int
 719 nfsm_v4build_attrs_xx(struct vattr *vap, struct mbuf **mb, caddr_t *bpos)
 720 {
 721         uint32_t *tl, *attrlenp, *bmvalp, len;
 722         size_t siz;
 723
 724         tl = nfsm_build_xx(4 * NFSX_UNSIGNED, mb, bpos);
 725
 726         *tl++ = txdr_unsigned(2);    /* bitmap length */
 727         bmvalp = tl;
 728         bzero(bmvalp, 8);
 729         tl += 2;
 730         attrlenp = tl;
 731
 732         len = 0;
 733         if (vap->va_size != VNOVAL) {
 734                 tl = nfsm_build_xx(2 * NFSX_UNSIGNED, mb, bpos);
 735                 FA4_SET(FA4_SIZE, bmvalp);
 736                 txdr_hyper(vap->va_size, tl); tl += 2;
 737                 len += 2 * NFSX_UNSIGNED;
 738         }
 739         if (vap->va_mode != (u_short)VNOVAL) {
 740                 tl = nfsm_build_xx(NFSX_UNSIGNED, mb, bpos);
 741                 FA4_SET(FA4_MODE, bmvalp);
 742                 *tl++ = txdr_unsigned(vap->va_mode);
 743                 len += NFSX_UNSIGNED;
 744         }
 745         if (vap->va_uid != VNOVAL) {
 746                 int error;
 747                 char *name;
 748                 error = idmap_uid_to_name(vap->va_uid, &name, &siz);
 749                 if (error || name == NULL || siz == 0) {
 750                         /* XXX */
 751                         siz = sizeof("nobody") - 1;
 752                         tl = nfsm_build_xx(NFSX_UNSIGNED + nfsm_rndup(siz), mb,
 753                             bpos);
 754                         *tl++ = txdr_unsigned(siz);
 755                         bcopy("nobody", tl, siz);
 756                         len += NFSX_UNSIGNED + nfsm_rndup(siz);
 757                 } else {
 758                         tl = nfsm_build_xx(NFSX_UNSIGNED + nfsm_rndup(siz), mb,
 759                             bpos);
 760                         *tl++ = txdr_unsigned(siz);
 761                         bcopy(name, tl, siz);
 762                         len += NFSX_UNSIGNED + nfsm_rndup(siz);
 763                 }
 764                 FA4_SET(FA4_OWNER, bmvalp);
 765         }
 766         if (vap->va_gid != VNOVAL) {
 767                 int error;
 768                 char *name;
 769                 error = idmap_gid_to_name(vap->va_gid, &name, &siz);
 770                 if (error || name == NULL || siz == 0) {
 771                         /* XXX */
 772                         siz = sizeof("nogroup") - 1;
 773                         tl = nfsm_build_xx(NFSX_UNSIGNED + nfsm_rndup(siz), mb,
 774                             bpos);
 775                         *tl++ = txdr_unsigned(siz);
 776                         bcopy("nogroup", tl, siz);
 777                         len += NFSX_UNSIGNED + nfsm_rndup(siz);
 778                 } else {
 779                         tl = nfsm_build_xx(NFSX_UNSIGNED + nfsm_rndup(siz), mb,
 780                             bpos);
 781                         *tl++ = txdr_unsigned(siz);
 782                         bcopy(name, tl, siz);
 783                         len += NFSX_UNSIGNED + nfsm_rndup(siz);
 784                 }
 785                 FA4_SET(FA4_OWNER_GROUP, bmvalp);
 786         }
 787         if (vap->va_atime.tv_sec != VNOVAL) {
 788                 uint64_t val = vap->va_atime.tv_sec;
 789                 tl = nfsm_build_xx(4 * NFSX_UNSIGNED, mb, bpos);
 790                 FA4_SET(FA4_TIME_ACCESS_SET, bmvalp);
 791                 *tl++ = txdr_unsigned(THCLIENTTIME);
 792                 txdr_hyper(val, tl); tl += 2;
 793                 *tl++ = txdr_unsigned(vap->va_atime.tv_nsec);
 794                 len += 4 * NFSX_UNSIGNED;
 795         }
 796         if (vap->va_mtime.tv_sec != VNOVAL) {
 797                 uint64_t val = vap->va_mtime.tv_sec;
 798                 tl = nfsm_build_xx(4 * NFSX_UNSIGNED, mb, bpos);
 799                 FA4_SET(FA4_TIME_MODIFY_SET, bmvalp);
 800                 *tl++ = txdr_unsigned(THCLIENTTIME);
 801                 txdr_hyper(val, tl); tl += 2;
 802                 *tl++ = txdr_unsigned(vap->va_mtime.tv_nsec);
 803                 len += 4 * NFSX_UNSIGNED;
 804         }
 805
 806         bmvalp[0] = txdr_unsigned(bmvalp[0]);
 807         bmvalp[1] = txdr_unsigned(bmvalp[1]);
 808
 809         *attrlenp = txdr_unsigned(len);
 810
 811         return (0);
 812 }
 813
 814 int
 815 nfsm_v4dissect_compound_xx(struct nfs4_compound *cp, struct mbuf **md, caddr_t *dpos)
 816 {
 817         uint32_t taglen, t1, *tl;
 818
 819         tl = nfsm_dissect_xx(NFSX_UNSIGNED, md, dpos);
 820         if (tl == NULL)
 821                 return (EBADRPC);
 822
 823         /* Reply status is handled by the RPC code */
 824
 825         taglen = fxdr_unsigned(uint32_t, *tl++);
 826         t1 = nfsm_adv_xx(nfsm_rndup(taglen), md, dpos);
 827         if (t1 != 0)
 828                 return (EBADRPC);
 829
 830         tl = nfsm_dissect_xx(NFSX_UNSIGNED, md, dpos);
 831         if (tl == NULL)
 832                 return (EBADRPC);
 833
 834         cp->rep_nops = fxdr_unsigned(uint32_t, *tl++);
 835
 836         return (0);
 837 }
 838
 839 int
 840 nfsm_v4dissect_simple_xx(struct nfs4_compound *cp, uint32_t op,
 841     uint32_t skipbytes, struct mbuf **md, caddr_t *dpos)
 842 {
 843         uint32_t t1, dop, status;
 844
 845         t1 = nfsm_dissectf_xx(md, dpos, "uu", &dop, &status);
 846         if (t1 != 0)
 847                 return (t1);
 848
 849         if (dop != op || status != 0)
 850                 return (EBADRPC);
 851
 852         if (skipbytes > 0)
 853                 NFSM_ADV(nfsm_rndup(skipbytes));
 854
 855         return (0);
 856 }
 857
 858 int
 859 nfsm_v4dissect_getattr_xx(struct nfs4_compound *cp, struct nfs4_oparg_getattr *ga,
 860     struct mbuf **md, caddr_t *dpos)
 861 {
 862         uint32_t *tl;
 863
 864         tl = nfsm_dissect_xx(2 * NFSX_UNSIGNED, md, dpos);
 865         if (tl == NULL || fxdr_unsigned(uint32_t, *tl++) != NFSV4OP_GETATTR ||
 866             *tl++ != 0)
 867                 return (EBADRPC);
 868
 869         return (nfsm_v4dissect_attrs_xx(&ga->fa, md, dpos));
 870 }
 871
 872 int
 873 nfsm_v4dissect_setattr_xx(struct nfs4_compound *cp, struct mbuf **md, caddr_t *dpos)
 874 {
 875         uint32_t t1, op, bmlen, status;
 876
 877         t1 = nfsm_dissectf_xx(md, dpos, "uu", &op, &status);
 878         if (t1 != 0)
 879                 return (t1);
 880
 881         if (op != NFSV4OP_SETATTR || status != 0)
 882                 return (EBADRPC);
 883
 884         t1 = nfsm_dissectf_xx(md, dpos, "u", &bmlen);
 885         if (t1 != 0)
 886                 return (t1);
 887
 888         return (nfsm_dissectf_xx(md, dpos, "k", bmlen << 2));
 889 }
 890
 891 int
 892 nfsm_v4dissect_getfh_xx(struct nfs4_compound *cp, struct nfs4_oparg_getfh *gfh,
 893     struct mbuf **md, caddr_t *dpos)
 894 {
 895         uint32_t *tl, len, xdrlen;
 896
 897         tl = nfsm_dissect_xx(2 * NFSX_UNSIGNED, md, dpos);
 898         if (tl == NULL || fxdr_unsigned(uint32_t, *tl++) != NFSV4OP_GETFH)
 899                 return (EBADRPC);
 900
 901         if (*tl++ != 0)
 902                 return (EBADRPC);
 903
 904         NFSM_DISSECT(NFSX_UNSIGNED);
 905         len = fxdr_unsigned(uint32_t, *tl++);
 906         if (len > NFSX_V4FH)
 907                 return (EBADRPC);
 908
 909         /* XXX integrate this into nfs_mtofh()? */
 910
 911         gfh->fh_len = len;
 912         xdrlen = nfsm_rndup(len);
 913
 914         NFSM_DISSECT(xdrlen);
 915         bcopy(tl, &gfh->fh_val, xdrlen);
 916
 917         return (0);
 918 }
 919
 920 int
 921 nfsm_v4dissect_setclientid_xx(struct nfs4_compound *cp,
 922     struct nfs4_oparg_setclientid *sci, struct mbuf **md, caddr_t *dpos)
 923 {
 924         uint32_t *tl;
 925
 926         tl = nfsm_dissect_xx(2 * NFSX_UNSIGNED, md, dpos);
 927         if (tl == NULL || fxdr_unsigned(uint32_t, *tl++) != NFSV4OP_SETCLIENTID)
 928                 return (EBADRPC);
 929
 930         /* Handle NFS4ERR_CLID_INUSE specially */
 931         if (*tl++ != 0)
 932                 return (EBADRPC);
 933
 934         NFSM_DISSECT(2 * NFSX_UNSIGNED);
 935         sci->clientid = fxdr_hyper(tl);
 936
 937         NFSM_DISSECT(nfsm_rndup(NFSX_V4VERF));
 938         bcopy(tl, sci->verf, NFSX_V4VERF);
 939
 940         return (0);
 941 }
 942
 943 int
 944 nfsm_v4dissect_close_xx(struct nfs4_compound *cp, struct nfs4_fctx *fcp,
 945     struct mbuf **md, caddr_t *dpos)
 946 {
 947         uint32_t *tl, t1;
 948
 949         tl = nfsm_dissect_xx(2 * NFSX_UNSIGNED, md, dpos);
 950         if (tl == NULL || fxdr_unsigned(uint32_t, *tl++) != NFSV4OP_CLOSE ||
 951             *tl++ != 0)
 952                 return (EBADRPC);
 953
 954         /* Copy stateid */
 955         t1 = nfsm_dissectf_xx(md, dpos, "o", NFSX_V4STATEID, fcp->stateid);
 956         if (t1 != 0)
 957                 return (t1);
 958
 959         return (0);
 960 }
 961
 962 int
 963 nfsm_v4dissect_access_xx(struct nfs4_compound *cp, struct nfs4_oparg_access *acc,
 964     struct mbuf **md, caddr_t *dpos)
 965 {
 966         uint32_t *tl;
 967
 968         tl = nfsm_dissect_xx(4 * NFSX_UNSIGNED, md, dpos);
 969         if (tl == NULL || fxdr_unsigned(uint32_t, *tl++) != NFSV4OP_ACCESS ||
 970             *tl++ != 0)
 971                 return (EBADRPC);
 972
 973         acc->supported = fxdr_unsigned(uint32_t, *tl++);
 974         acc->rmode = fxdr_unsigned(uint32_t, *tl++);
 975
 976         return (0);
 977 }
 978
 979 int
 980 nfsm_v4dissect_open_xx(struct nfs4_compound *cp, struct nfs4_oparg_open *op,
 981     struct mbuf **md, caddr_t *dpos)
 982 {
 983         uint32_t *tl, t1, bmlen, delegtype = ODNONE;
 984         int error = 0;
 985         nfsv4changeinfo cinfo;
 986         struct nfs4_fctx *fcp = op->fcp;
 987
 988         tl = nfsm_dissect_xx(2 * NFSX_UNSIGNED, md, dpos);
 989         if (tl == NULL || fxdr_unsigned(uint32_t, *tl++) != NFSV4OP_OPEN ||
 990             *tl++ != 0)
 991                 return (EBADRPC);
 992
 993         t1 = nfsm_dissectf_xx(md, dpos, "o", NFSX_V4STATEID, fcp->stateid);
 994         if (t1 != 0)
 995                 return (t1);
 996
 997         error = nfsm_v4dissect_changeinfo_xx(&cinfo, md, dpos);
 998         if (error != 0)
 999                 goto nfsmout;
1000
1001         NFSM_DISSECT(2 * NFSX_UNSIGNED);
1002
1003         op->rflags = fxdr_unsigned(uint32_t, *tl++);
1004         bmlen = fxdr_unsigned(uint32_t, *tl++);
1005         if (bmlen > 2) {
1006                 error = EBADRPC;
1007                 goto nfsmout;
1008         }
1009
1010         /* Skip */
1011         NFSM_ADV(nfsm_rndup(bmlen << 2));
1012
1013         NFSM_DISSECT(NFSX_UNSIGNED);
1014         delegtype = fxdr_unsigned(uint32_t, *tl++);
1015         switch (delegtype) {
1016         case ODREAD:
1017         case ODWRITE:
1018                 printf("nfs4: client delegation not yet supported\n");
1019                 error = EOPNOTSUPP;
1020                 goto nfsmout;
1021                 break;
1022         case ODNONE:
1023         default:
1024                 break;
1025         }
1026
1027  nfsmout:
1028         return (error);
1029 }
1030
1031 int
1032 nfsm_v4dissect_open_confirm_xx(struct nfs4_compound *cp, struct nfs4_oparg_open *op,
1033     struct mbuf **md, caddr_t *dpos)
1034 {
1035         uint32_t *tl;
1036
1037         tl = nfsm_dissect_xx(2 * NFSX_UNSIGNED, md, dpos);
1038         if (tl == NULL || fxdr_unsigned(uint32_t, *tl++) != NFSV4OP_OPEN_CONFIRM ||
1039             *tl++ != 0)
1040                 return (EBADRPC);
1041
1042         return nfsm_dissectf_xx(md, dpos, "o", NFSX_V4STATEID, op->fcp->stateid);
1043 }
1044
1045 int
1046 nfsm_v4dissect_read_xx(struct nfs4_compound *cp, struct nfs4_oparg_read *r,
1047     struct mbuf **md, caddr_t *dpos)
1048 {
1049         uint32_t op, status, t1;
1050
1051         t1 = nfsm_dissectf_xx(md, dpos, "uu", &op, &status);
1052         if (t1 != 0)
1053                 return (t1);
1054
1055         if (op != NFSV4OP_READ || status != 0)
1056                 return (EBADRPC);
1057
1058         t1 = nfsm_dissectf_xx(md, dpos, "uu", &r->eof, &r->retlen);
1059         if (t1 != 0)
1060                 return (t1);
1061
1062         return (nfsm_mbuftouio(md, r->uiop, r->retlen, dpos));
1063 }
1064
1065 int
1066 nfsm_v4dissect_write_xx(struct nfs4_compound *cp, struct nfs4_oparg_write *w,
1067     struct mbuf **md, caddr_t *dpos)
1068 {
1069         uint32_t op, status, t1;
1070
1071         t1 = nfsm_dissectf_xx(md, dpos, "uu", &op, &status);
1072         if (t1 != 0)
1073                 return (t1);
1074
1075         if (op != NFSV4OP_WRITE || status != 0)
1076                 return (EBADRPC);
1077
1078         return (nfsm_dissectf_xx(md, dpos, "uuo", &w->retlen, &w->committed,
1079                     NFSX_V4VERF, w->wverf));
1080 }
1081
1082 int
1083 nfsm_v4dissect_commit_xx(struct nfs4_compound *cp, struct nfs4_oparg_commit *c,
1084     struct mbuf **md, caddr_t *dpos)
1085 {
1086         uint32_t t1, op, status;
1087
1088         t1 = nfsm_dissectf_xx(md, dpos, "uu", &op, &status);
1089         if (t1 != 0)
1090                 return (t1);
1091
1092         if (op != NFSV4OP_COMMIT || status != 0)
1093                 return (EBADRPC);
1094
1095         return (nfsm_dissectf_xx(md, dpos, "o", NFSX_V4VERF, c->verf));
1096 }
1097
1098 int
1099 nfsm_v4dissect_create_xx(struct nfs4_compound *cp, struct nfs4_oparg_create *c,
1100     struct mbuf **md, caddr_t *dpos)
1101 {
1102         uint32_t t1, *tl, op, status, bmlen;
1103         nfsv4changeinfo ci;
1104
1105         t1 = nfsm_dissectf_xx(md, dpos, "uu", &op, &status);
1106         if (t1 != 0)
1107                 return (t1);
1108
1109         if (op != NFSV4OP_CREATE || status != 0)
1110                 return (EBADRPC);
1111
1112         /* Just throw this away for now */
1113         t1 = nfsm_v4dissect_changeinfo_xx(&ci, md, dpos);
1114         if (t1 != 0)
1115                 return (t1);
1116
1117         /* Throw this away too */
1118         NFSM_DISSECT(NFSX_UNSIGNED);
1119         bmlen = fxdr_unsigned(uint32_t, *tl++);
1120         NFSM_DISSECT(bmlen * NFSX_UNSIGNED);
1121         tl += bmlen;
1122
1123         return 0;
1124 }
1125
1126 int
1127 nfsm_v4dissect_readlink_xx(struct nfs4_compound *cp, struct uio *uiop,
1128     struct mbuf **md, caddr_t *dpos)
1129 {
1130         uint32_t t1, *tl, op, status, linklen;
1131
1132         t1 = nfsm_dissectf_xx(md, dpos, "uu", &op, &status);
1133         if (t1 != 0)
1134                 return (t1);
1135
1136         if (op != NFSV4OP_READLINK || status != 0)
1137                 return (EBADRPC);
1138
1139         /* Do this one manually for careful checking of sizes. */
1140         NFSM_DISSECT(NFSX_UNSIGNED);
1141         linklen = fxdr_unsigned(uint32_t, *tl++);
1142         if (linklen <= 0)
1143                 return (EBADRPC);
1144
1145         return (nfsm_mbuftouio(md, uiop, MIN(linklen, uiop->uio_resid), dpos));
1146 }
1147
1148 int
1149 nfsm_v4dissect_changeinfo_xx(nfsv4changeinfo *ci,
1150     struct mbuf **md, caddr_t *dpos)
1151 {
1152         uint32_t *tl;
1153
1154         NFSM_DISSECT(5 * NFSX_UNSIGNED);
1155
1156         ci->ciatomic = fxdr_unsigned(uint32_t, *tl++);
1157         ci->cibefore = fxdr_hyper(tl); tl += 2;
1158         ci->ciafter = fxdr_hyper(tl); tl += 2;
1159
1160         return (0);
1161 }
1162
1163 int
1164 nfsm_v4dissect_attrs_xx(struct nfsv4_fattr *fa, struct mbuf **md, caddr_t *dpos)
1165 {
1166         uint32_t t1, *tl, bmlen, bmval[2], attrlen, len = 0;
1167
1168         /* Bitmap length + value */
1169         NFSM_DISSECT(NFSX_UNSIGNED);
1170
1171         bmlen = fxdr_unsigned(uint32_t, *tl++);
1172         if (bmlen > 2)
1173                 return (EBADRPC);
1174
1175         if (bmlen == 0)
1176                 return (0);
1177
1178         NFSM_DISSECT(nfsm_rndup(bmlen << 2) + NFSX_UNSIGNED);
1179
1180         bmval[0] = bmlen > 0 ? fxdr_unsigned(uint32_t, *tl++) : 0;
1181         bmval[1] = bmlen > 1 ? fxdr_unsigned(uint32_t, *tl++) : 0;
1182
1183         /* Attribute length */
1184         attrlen = fxdr_unsigned(uint32_t, *tl++);
1185
1186         /*
1187          * XXX check for correct (<=) attributes mask return from
1188          * server.  need to pass this in.
1189          */
1190
1191         if (FA4_ISSET(FA4_TYPE, bmval)) {
1192                 /* overflow check */
1193                 NFSM_DISSECT(NFSX_UNSIGNED);
1194                 fa->fa4_type = fxdr_unsigned(uint32_t, *tl++);
1195                 fa->fa4_valid |= FA4V_TYPE;
1196                 len += NFSX_UNSIGNED;
1197         }
1198         if (FA4_ISSET(FA4_CHANGE, bmval)) {
1199                 NFSM_DISSECT(2 * NFSX_UNSIGNED);
1200                 fa->fa4_changeid = fxdr_hyper(tl);
1201                 fa->fa4_valid |= FA4V_CHANGEID;
1202                 len += 2 * NFSX_UNSIGNED;
1203         }
1204         if (FA4_ISSET(FA4_SIZE, bmval)) {
1205                 NFSM_DISSECT(2 * NFSX_UNSIGNED);
1206                 fa->fa4_size = fxdr_hyper(tl);
1207                 fa->fa4_valid |= FA4V_SIZE;
1208                 len += 2 * NFSX_UNSIGNED;
1209         }
1210         if (FA4_ISSET(FA4_FSID, bmval)) {
1211                 NFSM_DISSECT(4 * NFSX_UNSIGNED);
1212                 fa->fa4_fsid_major = fxdr_hyper(tl); tl += 2;
1213                 fa->fa4_fsid_minor = fxdr_hyper(tl);
1214                 fa->fa4_valid |= FA4V_SIZE;
1215                 len += 4 * NFSX_UNSIGNED;
1216         }
1217         if (FA4_ISSET(FA4_LEASE_TIME, bmval)) {
1218                 NFSM_DISSECT(NFSX_UNSIGNED);
1219                 fa->fa4_lease_time = fxdr_unsigned(uint32_t, *tl++);
1220                 fa->fa4_valid |= FA4V_LEASE_TIME;
1221                 len += NFSX_UNSIGNED;
1222         }
1223         if (FA4_ISSET(FA4_RDATTR_ERROR, bmval)) {
1224                 /* ignore for now; we only ask for it so the compound won't fail */
1225                 NFSM_DISSECT(NFSX_UNSIGNED);
1226                 tl++;
1227                 len += NFSX_UNSIGNED;
1228         }
1229         if (FA4_ISSET(FA4_FILEID, bmval)) {
1230                 NFSM_DISSECT(2 * NFSX_UNSIGNED);
1231                 fa->fa4_fileid = fxdr_hyper(tl);
1232                 fa->fa4_valid |= FA4V_FILEID;
1233                 len += 2 * NFSX_UNSIGNED;
1234         }
1235         if (FA4_ISSET(FA4_FILES_FREE, bmval)) {
1236                 NFSM_DISSECT(2 * NFSX_UNSIGNED);
1237                 fa->fa4_ffree = fxdr_hyper(tl);
1238                 fa->fa4_valid |= FA4V_FFREE;
1239                 len += 2 * NFSX_UNSIGNED;
1240         }
1241         if (FA4_ISSET(FA4_FILES_TOTAL, bmval)) {
1242                 NFSM_DISSECT(2 * NFSX_UNSIGNED);
1243                 fa->fa4_ftotal = fxdr_hyper(tl);
1244                 fa->fa4_valid |= FA4V_FTOTAL;
1245                 len += 2 * NFSX_UNSIGNED;
1246         }
1247         if (FA4_ISSET(FA4_MAXFILESIZE, bmval)) {
1248                 NFSM_DISSECT(2 * NFSX_UNSIGNED);
1249                 fa->fa4_maxfilesize = fxdr_hyper(tl);
1250                 fa->fa4_valid |= FA4V_MAXFILESIZE;
1251                 len += 2 * NFSX_UNSIGNED;
1252         }
1253         if (FA4_ISSET(FA4_MAXNAME, bmval)) {
1254                 NFSM_DISSECT(NFSX_UNSIGNED);
1255                 fa->fa4_maxname = fxdr_unsigned(uint32_t, *tl++);
1256                 fa->fa4_valid |= FA4V_MAXNAME;
1257                 len += NFSX_UNSIGNED;
1258         }
1259         if (FA4_ISSET(FA4_MAXREAD, bmval)) {
1260                 NFSM_DISSECT(2 * NFSX_UNSIGNED);
1261                 fa->fa4_maxread = fxdr_hyper(tl);
1262                 fa->fa4_valid |= FA4V_MAXREAD;
1263                 len += 2 * NFSX_UNSIGNED;
1264         }
1265         if (FA4_ISSET(FA4_MAXWRITE, bmval)) {
1266                 NFSM_DISSECT(2 * NFSX_UNSIGNED);
1267                 fa->fa4_maxwrite = fxdr_hyper(tl);
1268                 fa->fa4_valid |= FA4V_MAXWRITE;
1269                 len += 2 * NFSX_UNSIGNED;
1270         }
1271
1272         if (FA4_ISSET(FA4_MODE, bmval)) {
1273                 NFSM_DISSECT(NFSX_UNSIGNED);
1274                 fa->fa4_mode = fxdr_unsigned(mode_t, *tl++);
1275                 fa->fa4_valid |= FA4V_MODE;
1276                 len += NFSX_UNSIGNED;
1277         }
1278         if (FA4_ISSET(FA4_NUMLINKS, bmval)) {
1279                 NFSM_DISSECT(NFSX_UNSIGNED);
1280                 fa->fa4_nlink = fxdr_unsigned(nlink_t, *tl++);
1281                 fa->fa4_valid |= FA4V_NLINK;
1282                 len += NFSX_UNSIGNED;
1283         }
1284         if (FA4_ISSET(FA4_OWNER, bmval)) {
1285                 uint32_t ownerlen;
1286                 int error;
1287
1288                 NFSM_DISSECT(NFSX_UNSIGNED);
1289
1290                 ownerlen = fxdr_unsigned(uint32_t, *tl++);
1291                 NFSM_DISSECT(nfsm_rndup(ownerlen));
1292                 error = idmap_name_to_uid((char *)tl, ownerlen, &fa->fa4_uid);
1293                 if (error)
1294                         fa->fa4_uid = -2;
1295                 fa->fa4_valid |= FA4V_UID;
1296                 len += NFSX_UNSIGNED + nfsm_rndup(ownerlen);
1297         }
1298         if (FA4_ISSET(FA4_OWNER_GROUP, bmval)) {
1299                 uint32_t ownergrouplen;
1300                 int error;
1301
1302                 NFSM_DISSECT(NFSX_UNSIGNED);
1303                 ownergrouplen = fxdr_unsigned(uint32_t, *tl++);
1304                 NFSM_DISSECT(nfsm_rndup(ownergrouplen));
1305                 error = idmap_name_to_gid((char *)tl, ownergrouplen, &fa->fa4_gid);
1306                 if (error)
1307                         fa->fa4_gid = -2;
1308                 fa->fa4_valid |= FA4V_GID;
1309                 len += NFSX_UNSIGNED + nfsm_rndup(ownergrouplen);
1310         }
1311         if (FA4_ISSET(FA4_RAWDEV, bmval)) {
1312                 NFSM_DISSECT(2 * NFSX_UNSIGNED);
1313                 fa->fa4_rdev_major = fxdr_unsigned(uint32_t, *tl++);
1314                 fa->fa4_rdev_minor = fxdr_unsigned(uint32_t, *tl++);
1315                 fa->fa4_valid |= FA4V_RDEV;
1316                 len += 2 * NFSX_UNSIGNED;
1317         }
1318         if (FA4_ISSET(FA4_SPACE_AVAIL, bmval)) {
1319                 NFSM_DISSECT(2 * NFSX_UNSIGNED);
1320                 fa->fa4_savail = fxdr_hyper(tl);
1321                 fa->fa4_valid |= FA4V_SAVAIL;
1322                 len += 2 * NFSX_UNSIGNED;
1323         }
1324         if (FA4_ISSET(FA4_SPACE_FREE, bmval)) {
1325                 NFSM_DISSECT(2 * NFSX_UNSIGNED);
1326                 fa->fa4_sfree = fxdr_hyper(tl);
1327                 fa->fa4_valid |= FA4V_SFREE;
1328                 len += 2 * NFSX_UNSIGNED;
1329         }
1330         if (FA4_ISSET(FA4_SPACE_TOTAL, bmval)) {
1331                 NFSM_DISSECT(2 * NFSX_UNSIGNED);
1332                 fa->fa4_stotal = fxdr_hyper(tl);
1333                 fa->fa4_valid |= FA4V_STOTAL;
1334                 len += 2 * NFSX_UNSIGNED;
1335         }
1336         if (FA4_ISSET(FA4_SPACE_USED, bmval)) {
1337                 NFSM_ADV(2 * NFSX_UNSIGNED);
1338                 len += 2 * NFSX_UNSIGNED;
1339         }
1340         if (FA4_ISSET(FA4_TIME_ACCESS, bmval)) {
1341                 NFSM_MTOTIME(fa->fa4_atime);
1342                 fa->fa4_valid |= FA4V_ATIME;
1343                 len += 3 * NFSX_UNSIGNED;
1344         }
1345         if (FA4_ISSET(FA4_TIME_CREATE, bmval)) {
1346                 NFSM_MTOTIME(fa->fa4_ctime);
1347                 fa->fa4_valid |= FA4V_CTIME;
1348                 len += 3 * NFSX_UNSIGNED;
1349         }
1350         if (FA4_ISSET(FA4_TIME_MODIFY, bmval)) {
1351                 NFSM_MTOTIME(fa->fa4_mtime);
1352                 fa->fa4_valid |= FA4V_MTIME;
1353                 len += 3 * NFSX_UNSIGNED;
1354         }
1355
1356         if (len != attrlen)
1357                 return (EBADRPC);
1358
1359         return (0);
1360 }