sys/fs/nfsclient/nfs_clrpcops.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 /*
  38  * Rpc op calls, generally called from the vnode op calls or through the
  39  * buffer cache, for NFS v2, 3 and 4.
  40  * These do not normally make any changes to vnode arguments or use
  41  * structures that might change between the VFS variants. The returned
  42  * arguments are all at the end, after the NFSPROC_T *p one.
  43  */
  44
  45 #ifndef APPLEKEXT
  46 #include <fs/nfs/nfsport.h>
  47
  48 /*
  49  * Global variables
  50  */
  51 extern int nfs_numnfscbd;
  52 extern struct timeval nfsboottime;
  53 extern u_int32_t newnfs_false, newnfs_true;
  54 extern nfstype nfsv34_type[9];
  55 extern int nfsrv_useacl;
  56 extern char nfsv4_callbackaddr[INET6_ADDRSTRLEN];
  57 NFSCLSTATEMUTEX;
  58 int nfstest_outofseq = 0;
  59 int nfscl_assumeposixlocks = 1;
  60 int nfscl_enablecallb = 0;
  61 short nfsv4_cbport = NFSV4_CBPORT;
  62 int nfstest_openallsetattr = 0;
  63 #endif  /* !APPLEKEXT */
  64
  65 #define DIRHDSIZ        (sizeof (struct dirent) - (MAXNAMLEN + 1))
  66
  67 static int nfsrpc_setattrrpc(vnode_t , struct vattr *, nfsv4stateid_t *,
  68     struct ucred *, NFSPROC_T *, struct nfsvattr *, int *, void *);
  69 static int nfsrpc_readrpc(vnode_t , struct uio *, struct ucred *,
  70     nfsv4stateid_t *, NFSPROC_T *, struct nfsvattr *, int *, void *);
  71 static int nfsrpc_writerpc(vnode_t , struct uio *, int *, u_char *,
  72     struct ucred *, nfsv4stateid_t *, NFSPROC_T *, struct nfsvattr *, int *,
  73     void *);
  74 static int nfsrpc_createv23(vnode_t , char *, int, struct vattr *,
  75     nfsquad_t, int, struct ucred *, NFSPROC_T *, struct nfsvattr *,
  76     struct nfsvattr *, struct nfsfh **, int *, int *, void *);
  77 static int nfsrpc_createv4(vnode_t , char *, int, struct vattr *,
  78     nfsquad_t, int, struct nfsclowner *, struct nfscldeleg **, struct ucred *,
  79     NFSPROC_T *, struct nfsvattr *, struct nfsvattr *, struct nfsfh **, int *,
  80     int *, void *, int *);
  81 static int nfsrpc_locku(struct nfsrv_descript *, struct nfsmount *,
  82     struct nfscllockowner *, u_int64_t, u_int64_t,
  83     u_int32_t, struct ucred *, NFSPROC_T *, int);
  84 #ifdef NFS4_ACL_EXTATTR_NAME
  85 static int nfsrpc_setaclrpc(vnode_t, struct ucred *, NFSPROC_T *,
  86     struct acl *, nfsv4stateid_t *, void *);
  87 #endif
  88
  89 /*
  90  * nfs null call from vfs.
  91  */
  92 APPLESTATIC int
  93 nfsrpc_null(vnode_t vp, struct ucred *cred, NFSPROC_T *p)
  94 {
  95         int error;
  96         struct nfsrv_descript nfsd, *nd = &nfsd;
  97
  98         NFSCL_REQSTART(nd, NFSPROC_NULL, vp);
  99         error = nfscl_request(nd, vp, p, cred, NULL);
 100         if (nd->nd_repstat && !error)
 101                 error = nd->nd_repstat;
 102         mbuf_freem(nd->nd_mrep);
 103         return (error);
 104 }
 105
 106 /*
 107  * nfs access rpc op.
 108  * For nfs version 3 and 4, use the access rpc to check accessibility. If file
 109  * modes are changed on the server, accesses might still fail later.
 110  */
 111 APPLESTATIC int
 112 nfsrpc_access(vnode_t vp, int acmode, struct ucred *cred,
 113     NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp)
 114 {
 115         int error;
 116         u_int32_t mode, rmode;
 117
 118         if (acmode & VREAD)
 119                 mode = NFSACCESS_READ;
 120         else
 121                 mode = 0;
 122         if (vnode_vtype(vp) == VDIR) {
 123                 if (acmode & VWRITE)
 124                         mode |= (NFSACCESS_MODIFY | NFSACCESS_EXTEND |
 125                                  NFSACCESS_DELETE);
 126                 if (acmode & VEXEC)
 127                         mode |= NFSACCESS_LOOKUP;
 128         } else {
 129                 if (acmode & VWRITE)
 130                         mode |= (NFSACCESS_MODIFY | NFSACCESS_EXTEND);
 131                 if (acmode & VEXEC)
 132                         mode |= NFSACCESS_EXECUTE;
 133         }
 134
 135         /*
 136          * Now, just call nfsrpc_accessrpc() to do the actual RPC.
 137          */
 138         error = nfsrpc_accessrpc(vp, mode, cred, p, nap, attrflagp, &rmode,
 139             NULL);
 140
 141         /*
 142          * The NFS V3 spec does not clarify whether or not
 143          * the returned access bits can be a superset of
 144          * the ones requested, so...
 145          */
 146         if (!error && (rmode & mode) != mode)
 147                 error = EACCES;
 148         return (error);
 149 }
 150
 151 /*
 152  * The actual rpc, separated out for Darwin.
 153  */
 154 APPLESTATIC int
 155 nfsrpc_accessrpc(vnode_t vp, u_int32_t mode, struct ucred *cred,
 156     NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, u_int32_t *rmodep,
 157     void *stuff)
 158 {
 159         u_int32_t *tl;
 160         u_int32_t supported, rmode;
 161         int error;
 162         struct nfsrv_descript nfsd, *nd = &nfsd;
 163         nfsattrbit_t attrbits;
 164
 165         *attrflagp = 0;
 166         supported = mode;
 167         NFSCL_REQSTART(nd, NFSPROC_ACCESS, vp);
 168         NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
 169         *tl = txdr_unsigned(mode);
 170         if (nd->nd_flag & ND_NFSV4) {
 171                 /*
 172                  * And do a Getattr op.
 173                  */
 174                 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
 175                 *tl = txdr_unsigned(NFSV4OP_GETATTR);
 176                 NFSGETATTR_ATTRBIT(&attrbits);
 177                 (void) nfsrv_putattrbit(nd, &attrbits);
 178         }
 179         error = nfscl_request(nd, vp, p, cred, stuff);
 180         if (error)
 181                 return (error);
 182         if (nd->nd_flag & ND_NFSV3) {
 183                 error = nfscl_postop_attr(nd, nap, attrflagp, stuff);
 184                 if (error)
 185                         goto nfsmout;
 186         }
 187         if (!nd->nd_repstat) {
 188                 if (nd->nd_flag & ND_NFSV4) {
 189                         NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
 190                         supported = fxdr_unsigned(u_int32_t, *tl++);
 191                 } else {
 192                         NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
 193                 }
 194                 rmode = fxdr_unsigned(u_int32_t, *tl);
 195                 if (nd->nd_flag & ND_NFSV4)
 196                         error = nfscl_postop_attr(nd, nap, attrflagp, stuff);
 197
 198                 /*
 199                  * It's not obvious what should be done about
 200                  * unsupported access modes. For now, be paranoid
 201                  * and clear the unsupported ones.
 202                  */
 203                 rmode &= supported;
 204                 *rmodep = rmode;
 205         } else
 206                 error = nd->nd_repstat;
 207 nfsmout:
 208         mbuf_freem(nd->nd_mrep);
 209         return (error);
 210 }
 211
 212 /*
 213  * nfs open rpc
 214  */
 215 APPLESTATIC int
 216 nfsrpc_open(vnode_t vp, int amode, struct ucred *cred, NFSPROC_T *p)
 217 {
 218         struct nfsclopen *op;
 219         struct nfscldeleg *dp;
 220         struct nfsfh *nfhp;
 221         struct nfsnode *np = VTONFS(vp);
 222         struct nfsmount *nmp = VFSTONFS(vnode_mount(vp));
 223         u_int32_t mode, clidrev;
 224         int ret, newone, error, expireret = 0, retrycnt;
 225
 226         /*
 227          * For NFSv4, Open Ops are only done on Regular Files.
 228          */
 229         if (vnode_vtype(vp) != VREG)
 230                 return (0);
 231         mode = 0;
 232         if (amode & FREAD)
 233                 mode |= NFSV4OPEN_ACCESSREAD;
 234         if (amode & FWRITE)
 235                 mode |= NFSV4OPEN_ACCESSWRITE;
 236         nfhp = np->n_fhp;
 237
 238         retrycnt = 0;
 239 #ifdef notdef
 240 { char name[100]; int namel;
 241 namel = (np->n_v4->n4_namelen < 100) ? np->n_v4->n4_namelen : 99;
 242 bcopy(NFS4NODENAME(np->n_v4), name, namel);
 243 name[namel] = '\0';
 244 printf("rpcopen p=0x%x name=%s",p->p_pid,name);
 245 if (nfhp->nfh_len > 0) printf(" fh=0x%x\n",nfhp->nfh_fh[12]);
 246 else printf(" fhl=0\n");
 247 }
 248 #endif
 249         do {
 250             dp = NULL;
 251             error = nfscl_open(vp, nfhp->nfh_fh, nfhp->nfh_len, mode, 1,
 252                 cred, p, NULL, &op, &newone, &ret, 1);
 253             if (error) {
 254                 return (error);
 255             }
 256             if (nmp->nm_clp != NULL)
 257                 clidrev = nmp->nm_clp->nfsc_clientidrev;
 258             else
 259                 clidrev = 0;
 260             if (ret == NFSCLOPEN_DOOPEN) {
 261                 if (np->n_v4 != NULL) {
 262                         error = nfsrpc_openrpc(nmp, vp, np->n_v4->n4_data,
 263                            np->n_v4->n4_fhlen, np->n_fhp->nfh_fh,
 264                            np->n_fhp->nfh_len, mode, op,
 265                            NFS4NODENAME(np->n_v4), np->n_v4->n4_namelen, &dp,
 266                            0, 0x0, cred, p, 0, 0);
 267                         if (dp != NULL) {
 268 #ifdef APPLE
 269                                 OSBitAndAtomic((int32_t)~NDELEGMOD, (UInt32 *)&np->n_flag);
 270 #else
 271                                 NFSLOCKNODE(np);
 272                                 np->n_flag &= ~NDELEGMOD;
 273                                 NFSUNLOCKNODE(np);
 274 #endif
 275                                 (void) nfscl_deleg(nmp->nm_mountp,
 276                                     op->nfso_own->nfsow_clp,
 277                                     nfhp->nfh_fh, nfhp->nfh_len, cred, p, &dp);
 278                         }
 279                 } else {
 280                         error = EIO;
 281                 }
 282                 newnfs_copyincred(cred, &op->nfso_cred);
 283             } else if (ret == NFSCLOPEN_SETCRED)
 284                 /*
 285                  * This is a new local open on a delegation. It needs
 286                  * to have credentials so that an open can be done
 287                  * against the server during recovery.
 288                  */
 289                 newnfs_copyincred(cred, &op->nfso_cred);
 290
 291             /*
 292              * nfso_opencnt is the count of how many VOP_OPEN()s have
 293              * been done on this Open successfully and a VOP_CLOSE()
 294              * is expected for each of these.
 295              * If error is non-zero, don't increment it, since the Open
 296              * hasn't succeeded yet.
 297              */
 298             if (!error)
 299                 op->nfso_opencnt++;
 300             nfscl_openrelease(op, error, newone);
 301             if (error == NFSERR_GRACE || error == NFSERR_STALECLIENTID ||
 302                 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY) {
 303                 (void) nfs_catnap(PZERO, error, "nfs_open");
 304             } else if ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID)
 305                 && clidrev != 0) {
 306                 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p);
 307                 retrycnt++;
 308             }
 309         } while (error == NFSERR_GRACE || error == NFSERR_STALECLIENTID ||
 310             error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY ||
 311             ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) &&
 312              expireret == 0 && clidrev != 0 && retrycnt < 4));
 313         if (error && retrycnt >= 4)
 314                 error = EIO;
 315         return (error);
 316 }
 317
 318 /*
 319  * the actual open rpc
 320  */
 321 APPLESTATIC int
 322 nfsrpc_openrpc(struct nfsmount *nmp, vnode_t vp, u_int8_t *nfhp, int fhlen,
 323     u_int8_t *newfhp, int newfhlen, u_int32_t mode, struct nfsclopen *op,
 324     u_int8_t *name, int namelen, struct nfscldeleg **dpp,
 325     int reclaim, u_int32_t delegtype, struct ucred *cred, NFSPROC_T *p,
 326     int syscred, int recursed)
 327 {
 328         u_int32_t *tl;
 329         struct nfsrv_descript nfsd, *nd = &nfsd;
 330         struct nfscldeleg *dp, *ndp = NULL;
 331         struct nfsvattr nfsva;
 332         u_int32_t rflags, deleg;
 333         nfsattrbit_t attrbits;
 334         int error, ret, acesize, limitby;
 335
 336         dp = *dpp;
 337         *dpp = NULL;
 338         nfscl_reqstart(nd, NFSPROC_OPEN, nmp, nfhp, fhlen, NULL);
 339         NFSM_BUILD(tl, u_int32_t *, 5 * NFSX_UNSIGNED);
 340         *tl++ = txdr_unsigned(op->nfso_own->nfsow_seqid);
 341         *tl++ = txdr_unsigned(mode & NFSV4OPEN_ACCESSBOTH);
 342         *tl++ = txdr_unsigned((mode >> NFSLCK_SHIFT) & NFSV4OPEN_DENYBOTH);
 343         *tl++ = op->nfso_own->nfsow_clp->nfsc_clientid.lval[0];
 344         *tl = op->nfso_own->nfsow_clp->nfsc_clientid.lval[1];
 345         (void) nfsm_strtom(nd, op->nfso_own->nfsow_owner, NFSV4CL_LOCKNAMELEN);
 346         NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
 347         *tl++ = txdr_unsigned(NFSV4OPEN_NOCREATE);
 348         if (reclaim) {
 349                 *tl = txdr_unsigned(NFSV4OPEN_CLAIMPREVIOUS);
 350                 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
 351                 *tl = txdr_unsigned(delegtype);
 352         } else {
 353                 if (dp != NULL) {
 354                         *tl = txdr_unsigned(NFSV4OPEN_CLAIMDELEGATECUR);
 355                         NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID);
 356                         *tl++ = dp->nfsdl_stateid.seqid;
 357                         *tl++ = dp->nfsdl_stateid.other[0];
 358                         *tl++ = dp->nfsdl_stateid.other[1];
 359                         *tl = dp->nfsdl_stateid.other[2];
 360                 } else {
 361                         *tl = txdr_unsigned(NFSV4OPEN_CLAIMNULL);
 362                 }
 363                 (void) nfsm_strtom(nd, name, namelen);
 364         }
 365         NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
 366         *tl = txdr_unsigned(NFSV4OP_GETATTR);
 367         NFSZERO_ATTRBIT(&attrbits);
 368         NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_CHANGE);
 369         NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_TIMEMODIFY);
 370         (void) nfsrv_putattrbit(nd, &attrbits);
 371         if (syscred)
 372                 nd->nd_flag |= ND_USEGSSNAME;
 373         error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, vp, p, cred,
 374             NFS_PROG, NFS_VER4, NULL, 1, NULL);
 375         if (error)
 376                 return (error);
 377         NFSCL_INCRSEQID(op->nfso_own->nfsow_seqid, nd);
 378         if (!nd->nd_repstat) {
 379                 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID +
 380                     6 * NFSX_UNSIGNED);
 381                 op->nfso_stateid.seqid = *tl++;
 382                 op->nfso_stateid.other[0] = *tl++;
 383                 op->nfso_stateid.other[1] = *tl++;
 384                 op->nfso_stateid.other[2] = *tl;
 385                 rflags = fxdr_unsigned(u_int32_t, *(tl + 6));
 386                 error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL);
 387                 if (error)
 388                         goto nfsmout;
 389                 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
 390                 deleg = fxdr_unsigned(u_int32_t, *tl);
 391                 if (deleg == NFSV4OPEN_DELEGATEREAD ||
 392                     deleg == NFSV4OPEN_DELEGATEWRITE) {
 393                         if (!(op->nfso_own->nfsow_clp->nfsc_flags &
 394                               NFSCLFLAGS_FIRSTDELEG))
 395                                 op->nfso_own->nfsow_clp->nfsc_flags |=
 396                                   (NFSCLFLAGS_FIRSTDELEG | NFSCLFLAGS_GOTDELEG);
 397                         MALLOC(ndp, struct nfscldeleg *,
 398                             sizeof (struct nfscldeleg) + newfhlen,
 399                             M_NFSCLDELEG, M_WAITOK);
 400                         LIST_INIT(&ndp->nfsdl_owner);
 401                         LIST_INIT(&ndp->nfsdl_lock);
 402                         ndp->nfsdl_clp = op->nfso_own->nfsow_clp;
 403                         ndp->nfsdl_fhlen = newfhlen;
 404                         NFSBCOPY(newfhp, ndp->nfsdl_fh, newfhlen);
 405                         newnfs_copyincred(cred, &ndp->nfsdl_cred);
 406                         nfscl_lockinit(&ndp->nfsdl_rwlock);
 407                         NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID +
 408                             NFSX_UNSIGNED);
 409                         ndp->nfsdl_stateid.seqid = *tl++;
 410                         ndp->nfsdl_stateid.other[0] = *tl++;
 411                         ndp->nfsdl_stateid.other[1] = *tl++;
 412                         ndp->nfsdl_stateid.other[2] = *tl++;
 413                         ret = fxdr_unsigned(int, *tl);
 414                         if (deleg == NFSV4OPEN_DELEGATEWRITE) {
 415                                 ndp->nfsdl_flags = NFSCLDL_WRITE;
 416                                 /*
 417                                  * Indicates how much the file can grow.
 418                                  */
 419                                 NFSM_DISSECT(tl, u_int32_t *,
 420                                     3 * NFSX_UNSIGNED);
 421                                 limitby = fxdr_unsigned(int, *tl++);
 422                                 switch (limitby) {
 423                                 case NFSV4OPEN_LIMITSIZE:
 424                                         ndp->nfsdl_sizelimit = fxdr_hyper(tl);
 425                                         break;
 426                                 case NFSV4OPEN_LIMITBLOCKS:
 427                                         ndp->nfsdl_sizelimit =
 428                                             fxdr_unsigned(u_int64_t, *tl++);
 429                                         ndp->nfsdl_sizelimit *=
 430                                             fxdr_unsigned(u_int64_t, *tl);
 431                                         break;
 432                                 default:
 433                                         error = NFSERR_BADXDR;
 434                                         goto nfsmout;
 435                                 };
 436                         } else {
 437                                 ndp->nfsdl_flags = NFSCLDL_READ;
 438                         }
 439                         if (ret)
 440                                 ndp->nfsdl_flags |= NFSCLDL_RECALL;
 441                         error = nfsrv_dissectace(nd, &ndp->nfsdl_ace, &ret,
 442                             &acesize, p);
 443                         if (error)
 444                                 goto nfsmout;
 445                 } else if (deleg != NFSV4OPEN_DELEGATENONE) {
 446                         error = NFSERR_BADXDR;
 447                         goto nfsmout;
 448                 }
 449                 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
 450                 error = nfsv4_loadattr(nd, NULL, &nfsva, NULL,
 451                     NULL, 0, NULL, NULL, NULL, NULL, NULL, 0,
 452                     NULL, NULL, NULL, p, cred);
 453                 if (error)
 454                         goto nfsmout;
 455                 if (ndp != NULL) {
 456                         ndp->nfsdl_change = nfsva.na_filerev;
 457                         ndp->nfsdl_modtime = nfsva.na_mtime;
 458                         ndp->nfsdl_flags |= NFSCLDL_MODTIMESET;
 459                 }
 460                 if (!reclaim && (rflags & NFSV4OPEN_RESULTCONFIRM)) {
 461                     do {
 462                         ret = nfsrpc_openconfirm(vp, newfhp, newfhlen, op,
 463                             cred, p);
 464                         if (ret == NFSERR_DELAY)
 465                             (void) nfs_catnap(PZERO, ret, "nfs_open");
 466                     } while (ret == NFSERR_DELAY);
 467                     error = ret;
 468                 }
 469                 if ((rflags & NFSV4OPEN_LOCKTYPEPOSIX) ||
 470                     nfscl_assumeposixlocks)
 471                     op->nfso_posixlock = 1;
 472                 else
 473                     op->nfso_posixlock = 0;
 474
 475                 /*
 476                  * If the server is handing out delegations, but we didn't
 477                  * get one because an OpenConfirm was required, try the
 478                  * Open again, to get a delegation. This is a harmless no-op,
 479                  * from a server's point of view.
 480                  */
 481                 if (!reclaim && (rflags & NFSV4OPEN_RESULTCONFIRM) &&
 482                     (op->nfso_own->nfsow_clp->nfsc_flags & NFSCLFLAGS_GOTDELEG)
 483                     && !error && dp == NULL && ndp == NULL && !recursed) {
 484                     do {
 485                         ret = nfsrpc_openrpc(nmp, vp, nfhp, fhlen, newfhp,
 486                             newfhlen, mode, op, name, namelen, &ndp, 0, 0x0,
 487                             cred, p, syscred, 1);
 488                         if (ret == NFSERR_DELAY)
 489                             (void) nfs_catnap(PZERO, ret, "nfs_open2");
 490                     } while (ret == NFSERR_DELAY);
 491                     if (ret) {
 492                         if (ndp != NULL)
 493                                 FREE((caddr_t)ndp, M_NFSCLDELEG);
 494                         if (ret == NFSERR_STALECLIENTID ||
 495                             ret == NFSERR_STALEDONTRECOVER)
 496                                 error = ret;
 497                     }
 498                 }
 499         }
 500         if (nd->nd_repstat != 0 && error == 0)
 501                 error = nd->nd_repstat;
 502         if (error == NFSERR_STALECLIENTID)
 503                 nfscl_initiate_recovery(op->nfso_own->nfsow_clp);
 504 nfsmout:
 505         if (!error)
 506                 *dpp = ndp;
 507         else if (ndp != NULL)
 508                 FREE((caddr_t)ndp, M_NFSCLDELEG);
 509         mbuf_freem(nd->nd_mrep);
 510         return (error);
 511 }
 512
 513 /*
 514  * open downgrade rpc
 515  */
 516 APPLESTATIC int
 517 nfsrpc_opendowngrade(vnode_t vp, u_int32_t mode, struct nfsclopen *op,
 518     struct ucred *cred, NFSPROC_T *p)
 519 {
 520         u_int32_t *tl;
 521         struct nfsrv_descript nfsd, *nd = &nfsd;
 522         int error;
 523
 524         NFSCL_REQSTART(nd, NFSPROC_OPENDOWNGRADE, vp);
 525         NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID + 3 * NFSX_UNSIGNED);
 526         *tl++ = op->nfso_stateid.seqid;
 527         *tl++ = op->nfso_stateid.other[0];
 528         *tl++ = op->nfso_stateid.other[1];
 529         *tl++ = op->nfso_stateid.other[2];
 530         *tl++ = txdr_unsigned(op->nfso_own->nfsow_seqid);
 531         *tl++ = txdr_unsigned(mode & NFSV4OPEN_ACCESSBOTH);
 532         *tl = txdr_unsigned((mode >> NFSLCK_SHIFT) & NFSV4OPEN_DENYBOTH);
 533         error = nfscl_request(nd, vp, p, cred, NULL);
 534         if (error)
 535                 return (error);
 536         NFSCL_INCRSEQID(op->nfso_own->nfsow_seqid, nd);
 537         if (!nd->nd_repstat) {
 538                 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID);
 539                 op->nfso_stateid.seqid = *tl++;
 540                 op->nfso_stateid.other[0] = *tl++;
 541                 op->nfso_stateid.other[1] = *tl++;
 542                 op->nfso_stateid.other[2] = *tl;
 543         }
 544         if (nd->nd_repstat && error == 0)
 545                 error = nd->nd_repstat;
 546         if (error == NFSERR_STALESTATEID)
 547                 nfscl_initiate_recovery(op->nfso_own->nfsow_clp);
 548 nfsmout:
 549         mbuf_freem(nd->nd_mrep);
 550         return (error);
 551 }
 552
 553 /*
 554  * V4 Close operation.
 555  */
 556 APPLESTATIC int
 557 nfsrpc_close(vnode_t vp, int doclose, NFSPROC_T *p)
 558 {
 559         struct nfsclclient *clp;
 560         int error;
 561
 562         if (vnode_vtype(vp) != VREG)
 563                 return (0);
 564         if (doclose)
 565                 error = nfscl_doclose(vp, &clp, p);
 566         else
 567                 error = nfscl_getclose(vp, &clp);
 568         if (error)
 569                 return (error);
 570
 571         nfscl_clientrelease(clp);
 572         return (0);
 573 }
 574
 575 /*
 576  * Close the open.
 577  */
 578 APPLESTATIC void
 579 nfsrpc_doclose(struct nfsmount *nmp, struct nfsclopen *op, NFSPROC_T *p)
 580 {
 581         struct nfsrv_descript nfsd, *nd = &nfsd;
 582         struct nfscllockowner *lp;
 583         struct nfscllock *lop, *nlop;
 584         struct ucred *tcred;
 585         u_int64_t off = 0, len = 0;
 586         u_int32_t type = NFSV4LOCKT_READ;
 587         int error, do_unlock, trycnt;
 588
 589         tcred = newnfs_getcred();
 590         newnfs_copycred(&op->nfso_cred, tcred);
 591         /*
 592          * (Theoretically this could be done in the same
 593          *  compound as the close, but having multiple
 594          *  sequenced Ops in the same compound might be
 595          *  too scary for some servers.)
 596          */
 597         if (op->nfso_posixlock) {
 598                 off = 0;
 599                 len = NFS64BITSSET;
 600                 type = NFSV4LOCKT_READ;
 601         }
 602
 603         /*
 604          * Since this function is only called from VOP_INACTIVE(), no
 605          * other thread will be manipulating this Open. As such, the
 606          * lock lists are not being changed by other threads, so it should
 607          * be safe to do this without locking.
 608          */
 609         LIST_FOREACH(lp, &op->nfso_lock, nfsl_list) {
 610                 do_unlock = 1;
 611                 LIST_FOREACH_SAFE(lop, &lp->nfsl_lock, nfslo_list, nlop) {
 612                         if (op->nfso_posixlock == 0) {
 613                                 off = lop->nfslo_first;
 614                                 len = lop->nfslo_end - lop->nfslo_first;
 615                                 if (lop->nfslo_type == F_WRLCK)
 616                                         type = NFSV4LOCKT_WRITE;
 617                                 else
 618                                         type = NFSV4LOCKT_READ;
 619                         }
 620                         if (do_unlock) {
 621                                 trycnt = 0;
 622                                 do {
 623                                         error = nfsrpc_locku(nd, nmp, lp, off,
 624                                             len, type, tcred, p, 0);
 625                                         if ((nd->nd_repstat == NFSERR_GRACE ||
 626                                             nd->nd_repstat == NFSERR_DELAY) &&
 627                                             error == 0)
 628                                                 (void) nfs_catnap(PZERO,
 629                                                     (int)nd->nd_repstat,
 630                                                     "nfs_close");
 631                                 } while ((nd->nd_repstat == NFSERR_GRACE ||
 632                                     nd->nd_repstat == NFSERR_DELAY) &&
 633                                     error == 0 && trycnt++ < 5);
 634                                 if (op->nfso_posixlock)
 635                                         do_unlock = 0;
 636                         }
 637                         nfscl_freelock(lop, 0);
 638                 }
 639         }
 640
 641         /*
 642          * There could be other Opens for different files on the same
 643          * OpenOwner, so locking is required.
 644          */
 645         NFSLOCKCLSTATE();
 646         nfscl_lockexcl(&op->nfso_own->nfsow_rwlock, NFSCLSTATEMUTEXPTR);
 647         NFSUNLOCKCLSTATE();
 648         do {
 649                 error = nfscl_tryclose(op, tcred, nmp, p);
 650                 if (error == NFSERR_GRACE)
 651                         (void) nfs_catnap(PZERO, error, "nfs_close");
 652         } while (error == NFSERR_GRACE);
 653         NFSLOCKCLSTATE();
 654         nfscl_lockunlock(&op->nfso_own->nfsow_rwlock);
 655
 656         /*
 657          * Move the lockowner to nfsc_defunctlockowner,
 658          * so the Renew thread will do the ReleaseLockOwner
 659          * Op on it later. There might still be other
 660          * opens using the same lockowner name.
 661          */
 662         lp = LIST_FIRST(&op->nfso_lock);
 663         if (lp != NULL) {
 664                 while (LIST_NEXT(lp, nfsl_list) != NULL)
 665                         lp = LIST_NEXT(lp, nfsl_list);
 666                 LIST_PREPEND(&nmp->nm_clp->nfsc_defunctlockowner,
 667                     &op->nfso_lock, lp, nfsl_list);
 668                 LIST_INIT(&op->nfso_lock);
 669         }
 670         nfscl_freeopen(op, 0);
 671         NFSUNLOCKCLSTATE();
 672         NFSFREECRED(tcred);
 673 }
 674
 675 /*
 676  * The actual Close RPC.
 677  */
 678 APPLESTATIC int
 679 nfsrpc_closerpc(struct nfsrv_descript *nd, struct nfsmount *nmp,
 680     struct nfsclopen *op, struct ucred *cred, NFSPROC_T *p,
 681     int syscred)
 682 {
 683         u_int32_t *tl;
 684         int error;
 685
 686         nfscl_reqstart(nd, NFSPROC_CLOSE, nmp, op->nfso_fh,
 687             op->nfso_fhlen, NULL);
 688         NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED + NFSX_STATEID);
 689         *tl++ = txdr_unsigned(op->nfso_own->nfsow_seqid);
 690         *tl++ = op->nfso_stateid.seqid;
 691         *tl++ = op->nfso_stateid.other[0];
 692         *tl++ = op->nfso_stateid.other[1];
 693         *tl = op->nfso_stateid.other[2];
 694         if (syscred)
 695                 nd->nd_flag |= ND_USEGSSNAME;
 696         error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred,
 697             NFS_PROG, NFS_VER4, NULL, 1, NULL);
 698         if (error)
 699                 return (error);
 700         NFSCL_INCRSEQID(op->nfso_own->nfsow_seqid, nd);
 701         if (nd->nd_repstat == 0)
 702                 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID);
 703         error = nd->nd_repstat;
 704         if (error == NFSERR_STALESTATEID)
 705                 nfscl_initiate_recovery(op->nfso_own->nfsow_clp);
 706 nfsmout:
 707         mbuf_freem(nd->nd_mrep);
 708         return (error);
 709 }
 710
 711 /*
 712  * V4 Open Confirm RPC.
 713  */
 714 APPLESTATIC int
 715 nfsrpc_openconfirm(vnode_t vp, u_int8_t *nfhp, int fhlen,
 716     struct nfsclopen *op, struct ucred *cred, NFSPROC_T *p)
 717 {
 718         u_int32_t *tl;
 719         struct nfsrv_descript nfsd, *nd = &nfsd;
 720         int error;
 721
 722         nfscl_reqstart(nd, NFSPROC_OPENCONFIRM, VFSTONFS(vnode_mount(vp)),
 723             nfhp, fhlen, NULL);
 724         NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED + NFSX_STATEID);
 725         *tl++ = op->nfso_stateid.seqid;
 726         *tl++ = op->nfso_stateid.other[0];
 727         *tl++ = op->nfso_stateid.other[1];
 728         *tl++ = op->nfso_stateid.other[2];
 729         *tl = txdr_unsigned(op->nfso_own->nfsow_seqid);
 730         error = nfscl_request(nd, vp, p, cred, NULL);
 731         if (error)
 732                 return (error);
 733         NFSCL_INCRSEQID(op->nfso_own->nfsow_seqid, nd);
 734         if (!nd->nd_repstat) {
 735                 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID);
 736                 op->nfso_stateid.seqid = *tl++;
 737                 op->nfso_stateid.other[0] = *tl++;
 738                 op->nfso_stateid.other[1] = *tl++;
 739                 op->nfso_stateid.other[2] = *tl;
 740         }
 741         error = nd->nd_repstat;
 742         if (error == NFSERR_STALESTATEID)
 743                 nfscl_initiate_recovery(op->nfso_own->nfsow_clp);
 744 nfsmout:
 745         mbuf_freem(nd->nd_mrep);
 746         return (error);
 747 }
 748
 749 /*
 750  * Do the setclientid and setclientid confirm RPCs. Called from nfs_statfs()
 751  * when a mount has just occurred and when the server replies NFSERR_EXPIRED.
 752  */
 753 APPLESTATIC int
 754 nfsrpc_setclient(struct nfsmount *nmp, struct nfsclclient *clp,
 755     struct ucred *cred, NFSPROC_T *p)
 756 {
 757         u_int32_t *tl;
 758         struct nfsrv_descript nfsd;
 759         struct nfsrv_descript *nd = &nfsd;
 760         nfsattrbit_t attrbits;
 761         u_int8_t *cp = NULL, *cp2, addr[INET6_ADDRSTRLEN + 9];
 762         u_short port;
 763         int error, isinet6 = 0, callblen;
 764         nfsquad_t confirm;
 765         u_int32_t lease;
 766         static u_int32_t rev = 0;
 767
 768         if (nfsboottime.tv_sec == 0)
 769                 NFSSETBOOTTIME(nfsboottime);
 770         nfscl_reqstart(nd, NFSPROC_SETCLIENTID, nmp, NULL, 0, NULL);
 771         NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
 772         *tl++ = txdr_unsigned(nfsboottime.tv_sec);
 773         *tl = txdr_unsigned(rev++);
 774         (void) nfsm_strtom(nd, clp->nfsc_id, clp->nfsc_idlen);
 775
 776         /*
 777          * set up the callback address
 778          */
 779         NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
 780         *tl = txdr_unsigned(NFS_CALLBCKPROG);
 781         callblen = strlen(nfsv4_callbackaddr);
 782         if (callblen == 0)
 783                 cp = nfscl_getmyip(nmp, &isinet6);
 784         if (nfscl_enablecallb && nfs_numnfscbd > 0 &&
 785             (callblen > 0 || cp != NULL)) {
 786                 port = htons(nfsv4_cbport);
 787                 cp2 = (u_int8_t *)&port;
 788 #ifdef INET6
 789                 if ((callblen > 0 &&
 790                      strchr(nfsv4_callbackaddr, ':')) || isinet6) {
 791                         char ip6buf[INET6_ADDRSTRLEN], *ip6add;
 792
 793                         (void) nfsm_strtom(nd, "tcp6", 4);
 794                         if (callblen == 0) {
 795                                 ip6_sprintf(ip6buf, (struct in6_addr *)cp);
 796                                 ip6add = ip6buf;
 797                         } else {
 798                                 ip6add = nfsv4_callbackaddr;
 799                         }
 800                         snprintf(addr, INET6_ADDRSTRLEN + 9, "%s.%d.%d",
 801                             ip6add, cp2[0], cp2[1]);
 802                 } else
 803 #endif
 804                 {
 805                         (void) nfsm_strtom(nd, "tcp", 3);
 806                         if (callblen == 0)
 807                                 snprintf(addr, INET6_ADDRSTRLEN + 9,
 808                                     "%d.%d.%d.%d.%d.%d", cp[0], cp[1],
 809                                     cp[2], cp[3], cp2[0], cp2[1]);
 810                         else
 811                                 snprintf(addr, INET6_ADDRSTRLEN + 9,
 812                                     "%s.%d.%d", nfsv4_callbackaddr,
 813                                     cp2[0], cp2[1]);
 814                 }
 815                 (void) nfsm_strtom(nd, addr, strlen(addr));
 816         } else {
 817                 (void) nfsm_strtom(nd, "tcp", 3);
 818                 (void) nfsm_strtom(nd, "0.0.0.0.0.0", 11);
 819         }
 820         NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
 821         *tl = txdr_unsigned(clp->nfsc_cbident);
 822         nd->nd_flag |= ND_USEGSSNAME;
 823         error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred,
 824                 NFS_PROG, NFS_VER4, NULL, 1, NULL);
 825         if (error)
 826                 return (error);
 827         if (nd->nd_repstat == 0) {
 828             NFSM_DISSECT(tl, u_int32_t *, 4 * NFSX_UNSIGNED);
 829             clp->nfsc_clientid.lval[0] = *tl++;
 830             clp->nfsc_clientid.lval[1] = *tl++;
 831             confirm.lval[0] = *tl++;
 832             confirm.lval[1] = *tl;
 833             mbuf_freem(nd->nd_mrep);
 834             nd->nd_mrep = NULL;
 835
 836             /*
 837              * and confirm it.
 838              */
 839             nfscl_reqstart(nd, NFSPROC_SETCLIENTIDCFRM, nmp, NULL, 0, NULL);
 840             NFSM_BUILD(tl, u_int32_t *, 4 * NFSX_UNSIGNED);
 841             *tl++ = clp->nfsc_clientid.lval[0];
 842             *tl++ = clp->nfsc_clientid.lval[1];
 843             *tl++ = confirm.lval[0];
 844             *tl = confirm.lval[1];
 845             nd->nd_flag |= ND_USEGSSNAME;
 846             error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p,
 847                 cred, NFS_PROG, NFS_VER4, NULL, 1, NULL);
 848             if (error)
 849                 return (error);
 850             mbuf_freem(nd->nd_mrep);
 851             nd->nd_mrep = NULL;
 852             if (nd->nd_repstat == 0) {
 853                 nfscl_reqstart(nd, NFSPROC_GETATTR, nmp, nmp->nm_fh,
 854                     nmp->nm_fhsize, NULL);
 855                 NFSZERO_ATTRBIT(&attrbits);
 856                 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_LEASETIME);
 857                 (void) nfsrv_putattrbit(nd, &attrbits);
 858                 nd->nd_flag |= ND_USEGSSNAME;
 859                 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p,
 860                     cred, NFS_PROG, NFS_VER4, NULL, 1, NULL);
 861                 if (error)
 862                     return (error);
 863                 if (nd->nd_repstat == 0) {
 864                     error = nfsv4_loadattr(nd, NULL, NULL, NULL, NULL, 0, NULL,
 865                         NULL, NULL, NULL, NULL, 0, NULL, &lease, NULL, p, cred);
 866                     if (error)
 867                         goto nfsmout;
 868                     clp->nfsc_renew = NFSCL_RENEW(lease);
 869                     clp->nfsc_expire = NFSD_MONOSEC + clp->nfsc_renew;
 870                     clp->nfsc_clientidrev++;
 871                     if (clp->nfsc_clientidrev == 0)
 872                         clp->nfsc_clientidrev++;
 873                 }
 874             }
 875         }
 876         error = nd->nd_repstat;
 877 nfsmout:
 878         mbuf_freem(nd->nd_mrep);
 879         return (error);
 880 }
 881
 882 /*
 883  * nfs getattr call.
 884  */
 885 APPLESTATIC int
 886 nfsrpc_getattr(vnode_t vp, struct ucred *cred, NFSPROC_T *p,
 887     struct nfsvattr *nap, void *stuff)
 888 {
 889         struct nfsrv_descript nfsd, *nd = &nfsd;
 890         int error;
 891         nfsattrbit_t attrbits;
 892
 893         NFSCL_REQSTART(nd, NFSPROC_GETATTR, vp);
 894         if (nd->nd_flag & ND_NFSV4) {
 895                 NFSGETATTR_ATTRBIT(&attrbits);
 896                 (void) nfsrv_putattrbit(nd, &attrbits);
 897         }
 898         error = nfscl_request(nd, vp, p, cred, stuff);
 899         if (error)
 900                 return (error);
 901         if (!nd->nd_repstat)
 902                 error = nfsm_loadattr(nd, nap);
 903         else
 904                 error = nd->nd_repstat;
 905         mbuf_freem(nd->nd_mrep);
 906         return (error);
 907 }
 908
 909 /*
 910  * nfs getattr call with non-vnode arguemnts.
 911  */
 912 APPLESTATIC int
 913 nfsrpc_getattrnovp(struct nfsmount *nmp, u_int8_t *fhp, int fhlen, int syscred,
 914     struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, u_int64_t *xidp)
 915 {
 916         struct nfsrv_descript nfsd, *nd = &nfsd;
 917         int error, vers = NFS_VER2;
 918         nfsattrbit_t attrbits;
 919
 920         nfscl_reqstart(nd, NFSPROC_GETATTR, nmp, fhp, fhlen, NULL);
 921         if (nd->nd_flag & ND_NFSV4) {
 922                 vers = NFS_VER4;
 923                 NFSGETATTR_ATTRBIT(&attrbits);
 924                 (void) nfsrv_putattrbit(nd, &attrbits);
 925         } else if (nd->nd_flag & ND_NFSV3) {
 926                 vers = NFS_VER3;
 927         }
 928         if (syscred)
 929                 nd->nd_flag |= ND_USEGSSNAME;
 930         error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred,
 931             NFS_PROG, vers, NULL, 1, xidp);
 932         if (error)
 933                 return (error);
 934         if (!nd->nd_repstat)
 935                 error = nfsm_loadattr(nd, nap);
 936         else
 937                 error = nd->nd_repstat;
 938         mbuf_freem(nd->nd_mrep);
 939         return (error);
 940 }
 941
 942 /*
 943  * Do an nfs setattr operation.
 944  */
 945 APPLESTATIC int
 946 nfsrpc_setattr(vnode_t vp, struct vattr *vap, NFSACL_T *aclp,
 947     struct ucred *cred, NFSPROC_T *p, struct nfsvattr *rnap, int *attrflagp,
 948     void *stuff)
 949 {
 950         int error, expireret = 0, openerr, retrycnt;
 951         u_int32_t clidrev = 0, mode;
 952         struct nfsmount *nmp = VFSTONFS(vnode_mount(vp));
 953         struct nfsfh *nfhp;
 954         nfsv4stateid_t stateid;
 955         void *lckp;
 956
 957         if (nmp->nm_clp != NULL)
 958                 clidrev = nmp->nm_clp->nfsc_clientidrev;
 959         if (vap != NULL && NFSATTRISSET(u_quad_t, vap, va_size))
 960                 mode = NFSV4OPEN_ACCESSWRITE;
 961         else
 962                 mode = NFSV4OPEN_ACCESSREAD;
 963         retrycnt = 0;
 964         do {
 965                 lckp = NULL;
 966                 openerr = 1;
 967                 if (NFSHASNFSV4(nmp)) {
 968                         nfhp = VTONFS(vp)->n_fhp;
 969                         error = nfscl_getstateid(vp, nfhp->nfh_fh,
 970                             nfhp->nfh_len, mode, cred, p, &stateid, &lckp);
 971                         if (error && vnode_vtype(vp) == VREG &&
 972                             (mode == NFSV4OPEN_ACCESSWRITE ||
 973                              nfstest_openallsetattr)) {
 974                                 /*
 975                                  * No Open stateid, so try and open the file
 976                                  * now.
 977                                  */
 978                                 if (mode == NFSV4OPEN_ACCESSWRITE)
 979                                         openerr = nfsrpc_open(vp, FWRITE, cred,
 980                                             p);
 981                                 else
 982                                         openerr = nfsrpc_open(vp, FREAD, cred,
 983                                             p);
 984                                 if (!openerr)
 985                                         (void) nfscl_getstateid(vp,
 986                                             nfhp->nfh_fh, nfhp->nfh_len,
 987                                             mode, cred, p, &stateid, &lckp);
 988                         }
 989                 }
 990                 if (vap != NULL)
 991                         error = nfsrpc_setattrrpc(vp, vap, &stateid, cred, p,
 992                             rnap, attrflagp, stuff);
 993 #ifdef NFS4_ACL_EXTATTR_NAME
 994                 else
 995                         error = nfsrpc_setaclrpc(vp, cred, p, aclp, &stateid,
 996                             stuff);
 997 #else
 998                 else
 999                         error = EOPNOTSUPP;
1000 #endif
1001                 if (error == NFSERR_STALESTATEID)
1002                         nfscl_initiate_recovery(nmp->nm_clp);
1003                 if (lckp != NULL)
1004                         nfscl_lockderef(lckp);
1005                 if (!openerr)
1006                         (void) nfsrpc_close(vp, 0, p);
1007                 if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID ||
1008                     error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY ||
1009                     error == NFSERR_OLDSTATEID) {
1010                         (void) nfs_catnap(PZERO, error, "nfs_setattr");
1011                 } else if ((error == NFSERR_EXPIRED ||
1012                     error == NFSERR_BADSTATEID) && clidrev != 0) {
1013                         expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p);
1014                 }
1015                 retrycnt++;
1016         } while (error == NFSERR_GRACE || error == NFSERR_STALESTATEID ||
1017             error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY ||
1018             (error == NFSERR_OLDSTATEID && retrycnt < 20) ||
1019             ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) &&
1020              expireret == 0 && clidrev != 0 && retrycnt < 4));
1021         if (error && retrycnt >= 4)
1022                 error = EIO;
1023         return (error);
1024 }
1025
1026 static int
1027 nfsrpc_setattrrpc(vnode_t vp, struct vattr *vap,
1028     nfsv4stateid_t *stateidp, struct ucred *cred, NFSPROC_T *p,
1029     struct nfsvattr *rnap, int *attrflagp, void *stuff)
1030 {
1031         u_int32_t *tl;
1032         struct nfsrv_descript nfsd, *nd = &nfsd;
1033         int error;
1034         nfsattrbit_t attrbits;
1035
1036         *attrflagp = 0;
1037         NFSCL_REQSTART(nd, NFSPROC_SETATTR, vp);
1038         if (nd->nd_flag & ND_NFSV4)
1039                 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID);
1040         vap->va_type = vnode_vtype(vp);
1041         nfscl_fillsattr(nd, vap, vp, NFSSATTR_FULL, 0);
1042         if (nd->nd_flag & ND_NFSV3) {
1043                 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
1044                 *tl = newnfs_false;
1045         } else if (nd->nd_flag & ND_NFSV4) {
1046                 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
1047                 *tl = txdr_unsigned(NFSV4OP_GETATTR);
1048                 NFSGETATTR_ATTRBIT(&attrbits);
1049                 (void) nfsrv_putattrbit(nd, &attrbits);
1050         }
1051         error = nfscl_request(nd, vp, p, cred, stuff);
1052         if (error)
1053                 return (error);
1054         if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4))
1055                 error = nfscl_wcc_data(nd, vp, rnap, attrflagp, NULL, stuff);
1056         if ((nd->nd_flag & ND_NFSV4) && !error)
1057                 error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL);
1058         if (!(nd->nd_flag & ND_NFSV3) && !nd->nd_repstat && !error)
1059                 error = nfscl_postop_attr(nd, rnap, attrflagp, stuff);
1060         mbuf_freem(nd->nd_mrep);
1061         if (nd->nd_repstat && !error)
1062                 error = nd->nd_repstat;
1063         return (error);
1064 }
1065
1066 /*
1067  * nfs lookup rpc
1068  */
1069 APPLESTATIC int
1070 nfsrpc_lookup(vnode_t dvp, char *name, int len, struct ucred *cred,
1071     NFSPROC_T *p, struct nfsvattr *dnap, struct nfsvattr *nap,
1072     struct nfsfh **nfhpp, int *attrflagp, int *dattrflagp, void *stuff)
1073 {
1074         u_int32_t *tl;
1075         struct nfsrv_descript nfsd, *nd = &nfsd;
1076         struct nfsmount *nmp;
1077         struct nfsnode *np;
1078         struct nfsfh *nfhp;
1079         nfsattrbit_t attrbits;
1080         int error = 0, lookupp = 0;
1081
1082         *attrflagp = 0;
1083         *dattrflagp = 0;
1084         if (vnode_vtype(dvp) != VDIR)
1085                 return (ENOTDIR);
1086         nmp = VFSTONFS(vnode_mount(dvp));
1087         if (len > NFS_MAXNAMLEN)
1088                 return (ENAMETOOLONG);
1089         if (NFSHASNFSV4(nmp) && len == 1 &&
1090                 name[0] == '.') {
1091                 /*
1092                  * Just return the current dir's fh.
1093                  */
1094                 np = VTONFS(dvp);
1095                 MALLOC(nfhp, struct nfsfh *, sizeof (struct nfsfh) +
1096                         np->n_fhp->nfh_len, M_NFSFH, M_WAITOK);
1097                 nfhp->nfh_len = np->n_fhp->nfh_len;
1098                 NFSBCOPY(np->n_fhp->nfh_fh, nfhp->nfh_fh, nfhp->nfh_len);
1099                 *nfhpp = nfhp;
1100                 return (0);
1101         }
1102         if (NFSHASNFSV4(nmp) && len == 2 &&
1103                 name[0] == '.' && name[1] == '.') {
1104                 lookupp = 1;
1105                 NFSCL_REQSTART(nd, NFSPROC_LOOKUPP, dvp);
1106         } else {
1107                 NFSCL_REQSTART(nd, NFSPROC_LOOKUP, dvp);
1108                 (void) nfsm_strtom(nd, name, len);
1109         }
1110         if (nd->nd_flag & ND_NFSV4) {
1111                 NFSGETATTR_ATTRBIT(&attrbits);
1112                 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
1113                 *tl++ = txdr_unsigned(NFSV4OP_GETFH);
1114                 *tl = txdr_unsigned(NFSV4OP_GETATTR);
1115                 (void) nfsrv_putattrbit(nd, &attrbits);
1116         }
1117         error = nfscl_request(nd, dvp, p, cred, stuff);
1118         if (error)
1119                 return (error);
1120         if (nd->nd_repstat) {
1121                 /*
1122                  * When an NFSv4 Lookupp returns ENOENT, it means that
1123                  * the lookup is at the root of an fs, so return this dir.
1124                  */
1125                 if (nd->nd_repstat == NFSERR_NOENT && lookupp) {
1126                     np = VTONFS(dvp);
1127                     MALLOC(nfhp, struct nfsfh *, sizeof (struct nfsfh) +
1128                         np->n_fhp->nfh_len, M_NFSFH, M_WAITOK);
1129                     nfhp->nfh_len = np->n_fhp->nfh_len;
1130                     NFSBCOPY(np->n_fhp->nfh_fh, nfhp->nfh_fh, nfhp->nfh_len);
1131                     *nfhpp = nfhp;
1132                     mbuf_freem(nd->nd_mrep);
1133                     return (0);
1134                 }
1135                 if (nd->nd_flag & ND_NFSV3)
1136                     error = nfscl_postop_attr(nd, dnap, dattrflagp, stuff);
1137                 goto nfsmout;
1138         }
1139         if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == ND_NFSV4) {
1140                 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
1141                 if (*(tl + 1)) {
1142                         nd->nd_flag |= ND_NOMOREDATA;
1143                         goto nfsmout;
1144                 }
1145         }
1146         error = nfsm_getfh(nd, nfhpp);
1147         if (error)
1148                 goto nfsmout;
1149
1150         error = nfscl_postop_attr(nd, nap, attrflagp, stuff);
1151         if ((nd->nd_flag & ND_NFSV3) && !error)
1152                 error = nfscl_postop_attr(nd, dnap, dattrflagp, stuff);
1153 nfsmout:
1154         mbuf_freem(nd->nd_mrep);
1155         if (!error && nd->nd_repstat)
1156                 error = nd->nd_repstat;
1157         return (error);
1158 }
1159
1160 /*
1161  * Do a readlink rpc.
1162  */
1163 APPLESTATIC int
1164 nfsrpc_readlink(vnode_t vp, struct uio *uiop, struct ucred *cred,
1165     NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff)
1166 {
1167         u_int32_t *tl;
1168         struct nfsrv_descript nfsd, *nd = &nfsd;
1169         struct nfsnode *np = VTONFS(vp);
1170         nfsattrbit_t attrbits;
1171         int error, len, cangetattr = 1;
1172
1173         *attrflagp = 0;
1174         NFSCL_REQSTART(nd, NFSPROC_READLINK, vp);
1175         if (nd->nd_flag & ND_NFSV4) {
1176                 /*
1177                  * And do a Getattr op.
1178                  */
1179                 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
1180                 *tl = txdr_unsigned(NFSV4OP_GETATTR);
1181                 NFSGETATTR_ATTRBIT(&attrbits);
1182                 (void) nfsrv_putattrbit(nd, &attrbits);
1183         }
1184         error = nfscl_request(nd, vp, p, cred, stuff);
1185         if (error)
1186                 return (error);
1187         if (nd->nd_flag & ND_NFSV3)
1188                 error = nfscl_postop_attr(nd, nap, attrflagp, stuff);
1189         if (!nd->nd_repstat && !error) {
1190                 NFSM_STRSIZ(len, NFS_MAXPATHLEN);
1191                 /*
1192                  * This seems weird to me, but must have been added to
1193                  * FreeBSD for some reason. The only thing I can think of
1194                  * is that there was/is some server that replies with
1195                  * more link data than it should?
1196                  */
1197                 if (len == NFS_MAXPATHLEN) {
1198                         NFSLOCKNODE(np);
1199                         if (np->n_size > 0 && np->n_size < NFS_MAXPATHLEN) {
1200                                 len = np->n_size;
1201                                 cangetattr = 0;
1202                         }
1203                         NFSUNLOCKNODE(np);
1204                 }
1205                 error = nfsm_mbufuio(nd, uiop, len);
1206                 if ((nd->nd_flag & ND_NFSV4) && !error && cangetattr)
1207                         error = nfscl_postop_attr(nd, nap, attrflagp, stuff);
1208         }
1209         if (nd->nd_repstat && !error)
1210                 error = nd->nd_repstat;
1211 nfsmout:
1212         mbuf_freem(nd->nd_mrep);
1213         return (error);
1214 }
1215
1216 /*
1217  * Read operation.
1218  */
1219 APPLESTATIC int
1220 nfsrpc_read(vnode_t vp, struct uio *uiop, struct ucred *cred,
1221     NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff)
1222 {
1223         int error, expireret = 0, retrycnt;
1224         u_int32_t clidrev = 0;
1225         struct nfsmount *nmp = VFSTONFS(vnode_mount(vp));
1226         struct nfsnode *np = VTONFS(vp);
1227         struct ucred *newcred;
1228         struct nfsfh *nfhp = NULL;
1229         nfsv4stateid_t stateid;
1230         void *lckp;
1231
1232         if (nmp->nm_clp != NULL)
1233                 clidrev = nmp->nm_clp->nfsc_clientidrev;
1234         newcred = cred;
1235         if (NFSHASNFSV4(nmp)) {
1236                 nfhp = np->n_fhp;
1237                 if (p == NULL)
1238                         newcred = NFSNEWCRED(cred);
1239         }
1240         retrycnt = 0;
1241         do {
1242                 lckp = NULL;
1243                 if (NFSHASNFSV4(nmp))
1244                         (void)nfscl_getstateid(vp, nfhp->nfh_fh, nfhp->nfh_len,
1245                             NFSV4OPEN_ACCESSREAD, newcred, p, &stateid, &lckp);
1246                 error = nfsrpc_readrpc(vp, uiop, newcred, &stateid, p, nap,
1247                     attrflagp, stuff);
1248                 if (error == NFSERR_STALESTATEID)
1249                         nfscl_initiate_recovery(nmp->nm_clp);
1250                 if (lckp != NULL)
1251                         nfscl_lockderef(lckp);
1252                 if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID ||
1253                     error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY ||
1254                     error == NFSERR_OLDSTATEID) {
1255                         (void) nfs_catnap(PZERO, error, "nfs_read");
1256                 } else if ((error == NFSERR_EXPIRED ||
1257                     error == NFSERR_BADSTATEID) && clidrev != 0) {
1258                         expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p);
1259                 }
1260                 retrycnt++;
1261         } while (error == NFSERR_GRACE || error == NFSERR_STALESTATEID ||
1262             error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY ||
1263             (error == NFSERR_OLDSTATEID && retrycnt < 20) ||
1264             ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) &&
1265              expireret == 0 && clidrev != 0 && retrycnt < 4));
1266         if (error && retrycnt >= 4)
1267                 error = EIO;
1268         if (NFSHASNFSV4(nmp) && p == NULL)
1269                 NFSFREECRED(newcred);
1270         return (error);
1271 }
1272
1273 /*
1274  * The actual read RPC.
1275  */
1276 static int
1277 nfsrpc_readrpc(vnode_t vp, struct uio *uiop, struct ucred *cred,
1278     nfsv4stateid_t *stateidp, NFSPROC_T *p, struct nfsvattr *nap,
1279     int *attrflagp, void *stuff)
1280 {
1281         u_int32_t *tl;
1282         int error = 0, len, retlen, tsiz, eof = 0;
1283         struct nfsrv_descript nfsd;
1284         struct nfsmount *nmp = VFSTONFS(vnode_mount(vp));
1285         struct nfsrv_descript *nd = &nfsd;
1286
1287         *attrflagp = 0;
1288         tsiz = uio_uio_resid(uiop);
1289         if (uiop->uio_offset + tsiz > 0xffffffff &&
1290             !NFSHASNFSV3OR4(nmp))
1291                 return (EFBIG);
1292         nd->nd_mrep = NULL;
1293         while (tsiz > 0) {
1294                 *attrflagp = 0;
1295                 len = (tsiz > nmp->nm_rsize) ? nmp->nm_rsize : tsiz;
1296                 NFSCL_REQSTART(nd, NFSPROC_READ, vp);
1297                 if (nd->nd_flag & ND_NFSV4)
1298                         nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID);
1299                 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED * 3);
1300                 if (nd->nd_flag & ND_NFSV2) {
1301                         *tl++ = txdr_unsigned(uiop->uio_offset);
1302                         *tl++ = txdr_unsigned(len);
1303                         *tl = 0;
1304                 } else {
1305                         txdr_hyper(uiop->uio_offset, tl);
1306                         *(tl + 2) = txdr_unsigned(len);
1307                 }
1308                 /*
1309                  * Since I can't do a Getattr for NFSv4 for Write, there
1310                  * doesn't seem any point in doing one here, either.
1311                  * (See the comment in nfsrpc_writerpc() for more info.)
1312                  */
1313                 error = nfscl_request(nd, vp, p, cred, stuff);
1314                 if (error)
1315                         return (error);
1316                 if (nd->nd_flag & ND_NFSV3) {
1317                         error = nfscl_postop_attr(nd, nap, attrflagp, stuff);
1318                 } else if (!nd->nd_repstat && (nd->nd_flag & ND_NFSV2)) {
1319                         error = nfsm_loadattr(nd, nap);
1320                         if (!error)
1321                                 *attrflagp = 1;
1322                 }
1323                 if (nd->nd_repstat || error) {
1324                         if (!error)
1325                                 error = nd->nd_repstat;
1326                         goto nfsmout;
1327                 }
1328                 if (nd->nd_flag & ND_NFSV3) {
1329                         NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
1330                         eof = fxdr_unsigned(int, *(tl + 1));
1331                 } else if (nd->nd_flag & ND_NFSV4) {
1332                         NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
1333                         eof = fxdr_unsigned(int, *tl);
1334                 }
1335                 NFSM_STRSIZ(retlen, nmp->nm_rsize);
1336                 error = nfsm_mbufuio(nd, uiop, retlen);
1337                 if (error)
1338                         goto nfsmout;
1339                 mbuf_freem(nd->nd_mrep);
1340                 nd->nd_mrep = NULL;
1341                 tsiz -= retlen;
1342                 if (!(nd->nd_flag & ND_NFSV2)) {
1343                         if (eof || retlen == 0)
1344                                 tsiz = 0;
1345                 } else if (retlen < len)
1346                         tsiz = 0;
1347         }
1348         return (0);
1349 nfsmout:
1350         if (nd->nd_mrep != NULL)
1351                 mbuf_freem(nd->nd_mrep);
1352         return (error);
1353 }
1354
1355 /*
1356  * nfs write operation
1357  * When called_from_strategy != 0, it should return EIO for an error that
1358  * indicates recovery is in progress, so that the buffer will be left
1359  * dirty and be written back to the server later. If it loops around,
1360  * the recovery thread could get stuck waiting for the buffer and recovery
1361  * will then deadlock.
1362  */
1363 APPLESTATIC int
1364 nfsrpc_write(vnode_t vp, struct uio *uiop, int *iomode, u_char *verfp,
1365     struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp,
1366     void *stuff, int called_from_strategy)
1367 {
1368         int error, expireret = 0, retrycnt, nostateid;
1369         u_int32_t clidrev = 0;
1370         struct nfsmount *nmp = VFSTONFS(vnode_mount(vp));
1371         struct nfsnode *np = VTONFS(vp);
1372         struct ucred *newcred;
1373         struct nfsfh *nfhp = NULL;
1374         nfsv4stateid_t stateid;
1375         void *lckp;
1376
1377         if (nmp->nm_clp != NULL)
1378                 clidrev = nmp->nm_clp->nfsc_clientidrev;
1379         newcred = cred;
1380         if (NFSHASNFSV4(nmp)) {
1381                 if (p == NULL)
1382                         newcred = NFSNEWCRED(cred);
1383                 nfhp = np->n_fhp;
1384         }
1385         retrycnt = 0;
1386         do {
1387                 lckp = NULL;
1388                 nostateid = 0;
1389                 if (NFSHASNFSV4(nmp)) {
1390                         (void)nfscl_getstateid(vp, nfhp->nfh_fh, nfhp->nfh_len,
1391                             NFSV4OPEN_ACCESSWRITE, newcred, p, &stateid, &lckp);
1392                         if (stateid.other[0] == 0 && stateid.other[1] == 0 &&
1393                             stateid.other[2] == 0) {
1394                                 nostateid = 1;
1395                                 printf("stateid0 in write\n");
1396                         }
1397                 }
1398
1399                 /*
1400                  * If there is no stateid for NFSv4, it means this is an
1401                  * extraneous write after close. Basically a poorly
1402                  * implemented buffer cache. Just don't do the write.
1403                  */
1404                 if (nostateid)
1405                         error = 0;
1406                 else
1407                         error = nfsrpc_writerpc(vp, uiop, iomode, verfp,
1408                             newcred, &stateid, p, nap, attrflagp, stuff);
1409                 if (error == NFSERR_STALESTATEID)
1410                         nfscl_initiate_recovery(nmp->nm_clp);
1411                 if (lckp != NULL)
1412                         nfscl_lockderef(lckp);
1413                 if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID ||
1414                     error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY ||
1415                     error == NFSERR_OLDSTATEID) {
1416                         (void) nfs_catnap(PZERO, error, "nfs_write");
1417                 } else if ((error == NFSERR_EXPIRED ||
1418                     error == NFSERR_BADSTATEID) && clidrev != 0) {
1419                         expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p);
1420                 }
1421                 retrycnt++;
1422         } while (error == NFSERR_GRACE || error == NFSERR_DELAY ||
1423             ((error == NFSERR_STALESTATEID ||
1424               error == NFSERR_STALEDONTRECOVER) && called_from_strategy == 0) ||
1425             (error == NFSERR_OLDSTATEID && retrycnt < 20) ||
1426             ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) &&
1427              expireret == 0 && clidrev != 0 && retrycnt < 4));
1428         if (error != 0 && (retrycnt >= 4 ||
1429             ((error == NFSERR_STALESTATEID ||
1430               error == NFSERR_STALEDONTRECOVER) && called_from_strategy != 0)))
1431                 error = EIO;
1432         if (NFSHASNFSV4(nmp) && p == NULL)
1433                 NFSFREECRED(newcred);
1434         return (error);
1435 }
1436
1437 /*
1438  * The actual write RPC.
1439  */
1440 static int
1441 nfsrpc_writerpc(vnode_t vp, struct uio *uiop, int *iomode,
1442     u_char *verfp, struct ucred *cred, nfsv4stateid_t *stateidp,
1443     NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff)
1444 {
1445         u_int32_t *tl;
1446         struct nfsmount *nmp = VFSTONFS(vnode_mount(vp));
1447         struct nfsnode *np = VTONFS(vp);
1448         int error = 0, len, tsiz, rlen, commit, committed = NFSWRITE_FILESYNC;
1449         int wccflag = 0, wsize;
1450         int32_t backup;
1451         struct nfsrv_descript nfsd;
1452         struct nfsrv_descript *nd = &nfsd;
1453         nfsattrbit_t attrbits;
1454
1455         KASSERT(uiop->uio_iovcnt == 1, ("nfs: writerpc iovcnt > 1"));
1456         *attrflagp = 0;
1457         tsiz = uio_uio_resid(uiop);
1458         NFSLOCKMNT(nmp);
1459         if (uiop->uio_offset + tsiz > 0xffffffff &&
1460             !NFSHASNFSV3OR4(nmp)) {
1461                 NFSUNLOCKMNT(nmp);
1462                 return (EFBIG);
1463         }
1464         wsize = nmp->nm_wsize;
1465         NFSUNLOCKMNT(nmp);
1466         nd->nd_mrep = NULL;     /* NFSv2 sometimes does a write with */
1467         nd->nd_repstat = 0;     /* uio_resid == 0, so the while is not done */
1468         while (tsiz > 0) {
1469                 nmp = VFSTONFS(vnode_mount(vp));
1470                 if (nmp == NULL) {
1471                         error = ENXIO;
1472                         goto nfsmout;
1473                 }
1474                 *attrflagp = 0;
1475                 len = (tsiz > wsize) ? wsize : tsiz;
1476                 NFSCL_REQSTART(nd, NFSPROC_WRITE, vp);
1477                 if (nd->nd_flag & ND_NFSV4) {
1478                         nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID);
1479                         NFSM_BUILD(tl, u_int32_t *, NFSX_HYPER+2*NFSX_UNSIGNED);
1480                         txdr_hyper(uiop->uio_offset, tl);
1481                         tl += 2;
1482                         *tl++ = txdr_unsigned(*iomode);
1483                         *tl = txdr_unsigned(len);
1484                 } else if (nd->nd_flag & ND_NFSV3) {
1485                         NFSM_BUILD(tl, u_int32_t *, NFSX_HYPER+3*NFSX_UNSIGNED);
1486                         txdr_hyper(uiop->uio_offset, tl);
1487                         tl += 2;
1488                         *tl++ = txdr_unsigned(len);
1489                         *tl++ = txdr_unsigned(*iomode);
1490                         *tl = txdr_unsigned(len);
1491                 } else {
1492                         u_int32_t x;
1493
1494                         NFSM_BUILD(tl, u_int32_t *, 4 * NFSX_UNSIGNED);
1495                         /*
1496                          * Not sure why someone changed this, since the
1497                          * RFC clearly states that "beginoffset" and
1498                          * "totalcount" are ignored, but it wouldn't
1499                          * surprise me if there's a busted server out there.
1500                          */
1501                         /* Set both "begin" and "current" to non-garbage. */
1502                         x = txdr_unsigned((u_int32_t)uiop->uio_offset);
1503                         *tl++ = x;      /* "begin offset" */
1504                         *tl++ = x;      /* "current offset" */
1505                         x = txdr_unsigned(len);
1506                         *tl++ = x;      /* total to this offset */
1507                         *tl = x;        /* size of this write */
1508
1509                 }
1510                 nfsm_uiombuf(nd, uiop, len);
1511                 /*
1512                  * Although it is tempting to do a normal Getattr Op in the
1513                  * NFSv4 compound, the result can be a nearly hung client
1514                  * system if the Getattr asks for Owner and/or OwnerGroup.
1515                  * It occurs when the client can't map either the Owner or
1516                  * Owner_group name in the Getattr reply to a uid/gid. When
1517                  * there is a cache miss, the kernel does an upcall to the
1518                  * nfsuserd. Then, it can try and read the local /etc/passwd
1519                  * or /etc/group file. It can then block in getnewbuf(),
1520                  * waiting for dirty writes to be pushed to the NFS server.
1521                  * The only reason this doesn't result in a complete
1522                  * deadlock, is that the upcall times out and allows
1523                  * the write to complete. However, progress is so slow
1524                  * that it might just as well be deadlocked.
1525                  * So, we just get the attributes that change with each
1526                  * write Op.
1527                  * nb: nfscl_loadattrcache() needs to be told that these
1528                  *     partial attributes from a write rpc are being
1529                  *     passed in, via a argument flag.
1530                  */
1531                 if (nd->nd_flag & ND_NFSV4) {
1532                         NFSWRITEGETATTR_ATTRBIT(&attrbits);
1533                         NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
1534                         *tl = txdr_unsigned(NFSV4OP_GETATTR);
1535                         (void) nfsrv_putattrbit(nd, &attrbits);
1536                 }
1537                 error = nfscl_request(nd, vp, p, cred, stuff);
1538                 if (error)
1539                         return (error);
1540                 if (nd->nd_repstat) {
1541                         /*
1542                          * In case the rpc gets retried, roll
1543                          * the uio fileds changed by nfsm_uiombuf()
1544                          * back.
1545                          */
1546                         uiop->uio_offset -= len;
1547                         uio_uio_resid_add(uiop, len);
1548                         uio_iov_base_add(uiop, -len);
1549                         uio_iov_len_add(uiop, len);
1550                 }
1551                 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) {
1552                         error = nfscl_wcc_data(nd, vp, nap, attrflagp,
1553                             &wccflag, stuff);
1554                         if (error)
1555                                 goto nfsmout;
1556                 }
1557                 if (!nd->nd_repstat) {
1558                         if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) {
1559                                 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED
1560                                         + NFSX_VERF);
1561                                 rlen = fxdr_unsigned(int, *tl++);
1562                                 if (rlen == 0) {
1563                                         error = NFSERR_IO;
1564                                         goto nfsmout;
1565                                 } else if (rlen < len) {
1566                                         backup = len - rlen;
1567                                         uio_iov_base_add(uiop, -(backup));
1568                                         uio_iov_len_add(uiop, backup);
1569                                         uiop->uio_offset -= backup;
1570                                         uio_uio_resid_add(uiop, backup);
1571                                         len = rlen;
1572                                 }
1573                                 commit = fxdr_unsigned(int, *tl++);
1574
1575                                 /*
1576                                  * Return the lowest committment level
1577                                  * obtained by any of the RPCs.
1578                                  */
1579                                 if (committed == NFSWRITE_FILESYNC)
1580                                         committed = commit;
1581                                 else if (committed == NFSWRITE_DATASYNC &&
1582                                         commit == NFSWRITE_UNSTABLE)
1583                                         committed = commit;
1584                                 if (verfp != NULL)
1585                                         NFSBCOPY((caddr_t)tl, verfp, NFSX_VERF);
1586                                 NFSLOCKMNT(nmp);
1587                                 if (!NFSHASWRITEVERF(nmp)) {
1588                                         NFSBCOPY((caddr_t)tl,
1589                                             (caddr_t)&nmp->nm_verf[0],
1590                                             NFSX_VERF);
1591                                         NFSSETWRITEVERF(nmp);
1592                                 }
1593                                 NFSUNLOCKMNT(nmp);
1594                         }
1595                         if (nd->nd_flag & ND_NFSV4)
1596                                 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
1597                         if (nd->nd_flag & (ND_NFSV2 | ND_NFSV4)) {
1598                                 error = nfsm_loadattr(nd, nap);
1599                                 if (!error)
1600                                         *attrflagp = NFS_LATTR_NOSHRINK;
1601                         }
1602                 } else {
1603                         error = nd->nd_repstat;
1604                 }
1605                 if (error)
1606                         goto nfsmout;
1607                 NFSWRITERPC_SETTIME(wccflag, np, (nd->nd_flag & ND_NFSV4));
1608                 mbuf_freem(nd->nd_mrep);
1609                 nd->nd_mrep = NULL;
1610                 tsiz -= len;
1611         }
1612 nfsmout:
1613         if (nd->nd_mrep != NULL)
1614                 mbuf_freem(nd->nd_mrep);
1615         *iomode = committed;
1616         if (nd->nd_repstat && !error)
1617                 error = nd->nd_repstat;
1618         return (error);
1619 }
1620
1621 /*
1622  * nfs mknod rpc
1623  * For NFS v2 this is a kludge. Use a create rpc but with the IFMT bits of the
1624  * mode set to specify the file type and the size field for rdev.
1625  */
1626 APPLESTATIC int
1627 nfsrpc_mknod(vnode_t dvp, char *name, int namelen, struct vattr *vap,
1628     u_int32_t rdev, enum vtype vtyp, struct ucred *cred, NFSPROC_T *p,
1629     struct nfsvattr *dnap, struct nfsvattr *nnap, struct nfsfh **nfhpp,
1630     int *attrflagp, int *dattrflagp, void *dstuff)
1631 {
1632         u_int32_t *tl;
1633         int error = 0;
1634         struct nfsrv_descript nfsd, *nd = &nfsd;
1635         nfsattrbit_t attrbits;
1636
1637         *nfhpp = NULL;
1638         *attrflagp = 0;
1639         *dattrflagp = 0;
1640         if (namelen > NFS_MAXNAMLEN)
1641                 return (ENAMETOOLONG);
1642         NFSCL_REQSTART(nd, NFSPROC_MKNOD, dvp);
1643         if (nd->nd_flag & ND_NFSV4) {
1644                 if (vtyp == VBLK || vtyp == VCHR) {
1645                         NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED);
1646                         *tl++ = vtonfsv34_type(vtyp);
1647                         *tl++ = txdr_unsigned(NFSMAJOR(rdev));
1648                         *tl = txdr_unsigned(NFSMINOR(rdev));
1649                 } else {
1650                         NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
1651                         *tl = vtonfsv34_type(vtyp);
1652                 }
1653         }
1654         (void) nfsm_strtom(nd, name, namelen);
1655         if (nd->nd_flag & ND_NFSV3) {
1656                 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
1657                 *tl = vtonfsv34_type(vtyp);
1658         }
1659         if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4))
1660                 nfscl_fillsattr(nd, vap, dvp, 0, 0);
1661         if ((nd->nd_flag & ND_NFSV3) &&
1662             (vtyp == VCHR || vtyp == VBLK)) {
1663                 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
1664                 *tl++ = txdr_unsigned(NFSMAJOR(rdev));
1665                 *tl = txdr_unsigned(NFSMINOR(rdev));
1666         }
1667         if (nd->nd_flag & ND_NFSV4) {
1668                 NFSGETATTR_ATTRBIT(&attrbits);
1669                 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
1670                 *tl++ = txdr_unsigned(NFSV4OP_GETFH);
1671                 *tl = txdr_unsigned(NFSV4OP_GETATTR);
1672                 (void) nfsrv_putattrbit(nd, &attrbits);
1673         }
1674         if (nd->nd_flag & ND_NFSV2)
1675                 nfscl_fillsattr(nd, vap, dvp, NFSSATTR_SIZERDEV, rdev);
1676         error = nfscl_request(nd, dvp, p, cred, dstuff);
1677         if (error)
1678                 return (error);
1679         if (nd->nd_flag & ND_NFSV4)
1680                 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff);
1681         if (!nd->nd_repstat) {
1682                 if (nd->nd_flag & ND_NFSV4) {
1683                         NFSM_DISSECT(tl, u_int32_t *, 5 * NFSX_UNSIGNED);
1684                         error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL);
1685                         if (error)
1686                                 goto nfsmout;
1687                 }
1688                 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp);
1689                 if (error)
1690                         goto nfsmout;
1691         }
1692         if (nd->nd_flag & ND_NFSV3)
1693                 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff);
1694         if (!error && nd->nd_repstat)
1695                 error = nd->nd_repstat;
1696 nfsmout:
1697         mbuf_freem(nd->nd_mrep);
1698         return (error);
1699 }
1700
1701 /*
1702  * nfs file create call
1703  * Mostly just call the approriate routine. (I separated out v4, so that
1704  * error recovery wouldn't be as difficult.)
1705  */
1706 APPLESTATIC int
1707 nfsrpc_create(vnode_t dvp, char *name, int namelen, struct vattr *vap,
1708     nfsquad_t cverf, int fmode, struct ucred *cred, NFSPROC_T *p,
1709     struct nfsvattr *dnap, struct nfsvattr *nnap, struct nfsfh **nfhpp,
1710     int *attrflagp, int *dattrflagp, void *dstuff)
1711 {
1712         int error = 0, newone, expireret = 0, retrycnt, unlocked;
1713         struct nfsclowner *owp;
1714         struct nfscldeleg *dp;
1715         struct nfsmount *nmp = VFSTONFS(vnode_mount(dvp));
1716         u_int32_t clidrev;
1717
1718         if (NFSHASNFSV4(nmp)) {
1719             retrycnt = 0;
1720             do {
1721                 dp = NULL;
1722                 error = nfscl_open(dvp, NULL, 0, (NFSV4OPEN_ACCESSWRITE |
1723                     NFSV4OPEN_ACCESSREAD), 0, cred, p, &owp, NULL, &newone,
1724                     NULL, 1);
1725                 if (error)
1726                         return (error);
1727                 if (nmp->nm_clp != NULL)
1728                         clidrev = nmp->nm_clp->nfsc_clientidrev;
1729                 else
1730                         clidrev = 0;
1731                 error = nfsrpc_createv4(dvp, name, namelen, vap, cverf, fmode,
1732                   owp, &dp, cred, p, dnap, nnap, nfhpp, attrflagp, dattrflagp,
1733                   dstuff, &unlocked);
1734                 if (dp != NULL)
1735                         (void) nfscl_deleg(nmp->nm_mountp, owp->nfsow_clp,
1736                             (*nfhpp)->nfh_fh, (*nfhpp)->nfh_len, cred, p, &dp);
1737                 nfscl_ownerrelease(owp, error, newone, unlocked);
1738                 if (error == NFSERR_GRACE || error == NFSERR_STALECLIENTID ||
1739                     error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY) {
1740                         (void) nfs_catnap(PZERO, error, "nfs_open");
1741                 } else if ((error == NFSERR_EXPIRED ||
1742                     error == NFSERR_BADSTATEID) && clidrev != 0) {
1743                         expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p);
1744                         retrycnt++;
1745                 }
1746             } while (error == NFSERR_GRACE || error == NFSERR_STALECLIENTID ||
1747                 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY ||
1748                 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) &&
1749                  expireret == 0 && clidrev != 0 && retrycnt < 4));
1750             if (error && retrycnt >= 4)
1751                     error = EIO;
1752         } else {
1753                 error = nfsrpc_createv23(dvp, name, namelen, vap, cverf,
1754                     fmode, cred, p, dnap, nnap, nfhpp, attrflagp, dattrflagp,
1755                     dstuff);
1756         }
1757         return (error);
1758 }
1759
1760 /*
1761  * The create rpc for v2 and 3.
1762  */
1763 static int
1764 nfsrpc_createv23(vnode_t dvp, char *name, int namelen, struct vattr *vap,
1765     nfsquad_t cverf, int fmode, struct ucred *cred, NFSPROC_T *p,
1766     struct nfsvattr *dnap, struct nfsvattr *nnap, struct nfsfh **nfhpp,
1767     int *attrflagp, int *dattrflagp, void *dstuff)
1768 {
1769         u_int32_t *tl;
1770         int error = 0;
1771         struct nfsrv_descript nfsd, *nd = &nfsd;
1772
1773         *nfhpp = NULL;
1774         *attrflagp = 0;
1775         *dattrflagp = 0;
1776         if (namelen > NFS_MAXNAMLEN)
1777                 return (ENAMETOOLONG);
1778         NFSCL_REQSTART(nd, NFSPROC_CREATE, dvp);
1779         (void) nfsm_strtom(nd, name, namelen);
1780         if (nd->nd_flag & ND_NFSV3) {
1781                 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
1782                 if (fmode & O_EXCL) {
1783                         *tl = txdr_unsigned(NFSCREATE_EXCLUSIVE);
1784                         NFSM_BUILD(tl, u_int32_t *, NFSX_VERF);
1785                         *tl++ = cverf.lval[0];
1786                         *tl = cverf.lval[1];
1787                 } else {
1788                         *tl = txdr_unsigned(NFSCREATE_UNCHECKED);
1789                         nfscl_fillsattr(nd, vap, dvp, 0, 0);
1790                 }
1791         } else {
1792                 nfscl_fillsattr(nd, vap, dvp, NFSSATTR_SIZE0, 0);
1793         }
1794         error = nfscl_request(nd, dvp, p, cred, dstuff);
1795         if (error)
1796                 return (error);
1797         if (nd->nd_repstat == 0) {
1798                 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp);
1799                 if (error)
1800                         goto nfsmout;
1801         }
1802         if (nd->nd_flag & ND_NFSV3)
1803                 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff);
1804         if (nd->nd_repstat != 0 && error == 0)
1805                 error = nd->nd_repstat;
1806 nfsmout:
1807         mbuf_freem(nd->nd_mrep);
1808         return (error);
1809 }
1810
1811 static int
1812 nfsrpc_createv4(vnode_t dvp, char *name, int namelen, struct vattr *vap,
1813     nfsquad_t cverf, int fmode, struct nfsclowner *owp, struct nfscldeleg **dpp,
1814     struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap,
1815     struct nfsvattr *nnap, struct nfsfh **nfhpp, int *attrflagp,
1816     int *dattrflagp, void *dstuff, int *unlockedp)
1817 {
1818         u_int32_t *tl;
1819         int error = 0, deleg, newone, ret, acesize, limitby;
1820         struct nfsrv_descript nfsd, *nd = &nfsd;
1821         struct nfsclopen *op;
1822         struct nfscldeleg *dp = NULL;
1823         struct nfsnode *np;
1824         struct nfsfh *nfhp;
1825         nfsattrbit_t attrbits;
1826         nfsv4stateid_t stateid;
1827         u_int32_t rflags;
1828
1829         *unlockedp = 0;
1830         *nfhpp = NULL;
1831         *dpp = NULL;
1832         *attrflagp = 0;
1833         *dattrflagp = 0;
1834         if (namelen > NFS_MAXNAMLEN)
1835                 return (ENAMETOOLONG);
1836         NFSCL_REQSTART(nd, NFSPROC_CREATE, dvp);
1837         /*
1838          * For V4, this is actually an Open op.
1839          */
1840         NFSM_BUILD(tl, u_int32_t *, 5 * NFSX_UNSIGNED);
1841         *tl++ = txdr_unsigned(owp->nfsow_seqid);
1842         *tl++ = txdr_unsigned(NFSV4OPEN_ACCESSWRITE |
1843             NFSV4OPEN_ACCESSREAD);
1844         *tl++ = txdr_unsigned(NFSV4OPEN_DENYNONE);
1845         *tl++ = owp->nfsow_clp->nfsc_clientid.lval[0];
1846         *tl = owp->nfsow_clp->nfsc_clientid.lval[1];
1847         (void) nfsm_strtom(nd, owp->nfsow_owner, NFSV4CL_LOCKNAMELEN);
1848         NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
1849         *tl++ = txdr_unsigned(NFSV4OPEN_CREATE);
1850         if (fmode & O_EXCL) {
1851                 *tl = txdr_unsigned(NFSCREATE_EXCLUSIVE);
1852                 NFSM_BUILD(tl, u_int32_t *, NFSX_VERF);
1853                 *tl++ = cverf.lval[0];
1854                 *tl = cverf.lval[1];
1855         } else {
1856                 *tl = txdr_unsigned(NFSCREATE_UNCHECKED);
1857                 nfscl_fillsattr(nd, vap, dvp, 0, 0);
1858         }
1859         NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
1860         *tl = txdr_unsigned(NFSV4OPEN_CLAIMNULL);
1861         (void) nfsm_strtom(nd, name, namelen);
1862         NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
1863         *tl++ = txdr_unsigned(NFSV4OP_GETFH);
1864         *tl = txdr_unsigned(NFSV4OP_GETATTR);
1865         NFSGETATTR_ATTRBIT(&attrbits);
1866         (void) nfsrv_putattrbit(nd, &attrbits);
1867         error = nfscl_request(nd, dvp, p, cred, dstuff);
1868         if (error)
1869                 return (error);
1870         error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff);
1871         if (error)
1872                 goto nfsmout;
1873         NFSCL_INCRSEQID(owp->nfsow_seqid, nd);
1874         if (nd->nd_repstat == 0) {
1875                 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID +
1876                     6 * NFSX_UNSIGNED);
1877                 stateid.seqid = *tl++;
1878                 stateid.other[0] = *tl++;
1879                 stateid.other[1] = *tl++;
1880                 stateid.other[2] = *tl;
1881                 rflags = fxdr_unsigned(u_int32_t, *(tl + 6));
1882                 (void) nfsrv_getattrbits(nd, &attrbits, NULL, NULL);
1883                 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
1884                 deleg = fxdr_unsigned(int, *tl);
1885                 if (deleg == NFSV4OPEN_DELEGATEREAD ||
1886                     deleg == NFSV4OPEN_DELEGATEWRITE) {
1887                         if (!(owp->nfsow_clp->nfsc_flags &
1888                               NFSCLFLAGS_FIRSTDELEG))
1889                                 owp->nfsow_clp->nfsc_flags |=
1890                                   (NFSCLFLAGS_FIRSTDELEG | NFSCLFLAGS_GOTDELEG);
1891                         MALLOC(dp, struct nfscldeleg *,
1892                             sizeof (struct nfscldeleg) + NFSX_V4FHMAX,
1893                             M_NFSCLDELEG, M_WAITOK);
1894                         LIST_INIT(&dp->nfsdl_owner);
1895                         LIST_INIT(&dp->nfsdl_lock);
1896                         dp->nfsdl_clp = owp->nfsow_clp;
1897                         newnfs_copyincred(cred, &dp->nfsdl_cred);
1898                         nfscl_lockinit(&dp->nfsdl_rwlock);
1899                         NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID +
1900                             NFSX_UNSIGNED);
1901                         dp->nfsdl_stateid.seqid = *tl++;
1902                         dp->nfsdl_stateid.other[0] = *tl++;
1903                         dp->nfsdl_stateid.other[1] = *tl++;
1904                         dp->nfsdl_stateid.other[2] = *tl++;
1905                         ret = fxdr_unsigned(int, *tl);
1906                         if (deleg == NFSV4OPEN_DELEGATEWRITE) {
1907                                 dp->nfsdl_flags = NFSCLDL_WRITE;
1908                                 /*
1909                                  * Indicates how much the file can grow.
1910                                  */
1911                                 NFSM_DISSECT(tl, u_int32_t *,
1912                                     3 * NFSX_UNSIGNED);
1913                                 limitby = fxdr_unsigned(int, *tl++);
1914                                 switch (limitby) {
1915                                 case NFSV4OPEN_LIMITSIZE:
1916                                         dp->nfsdl_sizelimit = fxdr_hyper(tl);
1917                                         break;
1918                                 case NFSV4OPEN_LIMITBLOCKS:
1919                                         dp->nfsdl_sizelimit =
1920                                             fxdr_unsigned(u_int64_t, *tl++);
1921                                         dp->nfsdl_sizelimit *=
1922                                             fxdr_unsigned(u_int64_t, *tl);
1923                                         break;
1924                                 default:
1925                                         error = NFSERR_BADXDR;
1926                                         goto nfsmout;
1927                                 };
1928                         } else {
1929                                 dp->nfsdl_flags = NFSCLDL_READ;
1930                         }
1931                         if (ret)
1932                                 dp->nfsdl_flags |= NFSCLDL_RECALL;
1933                         error = nfsrv_dissectace(nd, &dp->nfsdl_ace, &ret,
1934                             &acesize, p);
1935                         if (error)
1936                                 goto nfsmout;
1937                 } else if (deleg != NFSV4OPEN_DELEGATENONE) {
1938                         error = NFSERR_BADXDR;
1939                         goto nfsmout;
1940                 }
1941                 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp);
1942                 if (error)
1943                         goto nfsmout;
1944                 if (dp != NULL && *attrflagp) {
1945                         dp->nfsdl_change = nnap->na_filerev;
1946                         dp->nfsdl_modtime = nnap->na_mtime;
1947                         dp->nfsdl_flags |= NFSCLDL_MODTIMESET;
1948                 }
1949                 /*
1950                  * We can now complete the Open state.
1951                  */
1952                 nfhp = *nfhpp;
1953                 if (dp != NULL) {
1954                         dp->nfsdl_fhlen = nfhp->nfh_len;
1955                         NFSBCOPY(nfhp->nfh_fh, dp->nfsdl_fh, nfhp->nfh_len);
1956                 }
1957                 /*
1958                  * Get an Open structure that will be
1959                  * attached to the OpenOwner, acquired already.
1960                  */
1961                 error = nfscl_open(dvp, nfhp->nfh_fh, nfhp->nfh_len,
1962                     (NFSV4OPEN_ACCESSWRITE | NFSV4OPEN_ACCESSREAD), 0,
1963                     cred, p, NULL, &op, &newone, NULL, 0);
1964                 if (error)
1965                         goto nfsmout;
1966                 op->nfso_stateid = stateid;
1967                 newnfs_copyincred(cred, &op->nfso_cred);
1968                 if ((rflags & NFSV4OPEN_RESULTCONFIRM)) {
1969                     do {
1970                         ret = nfsrpc_openconfirm(dvp, nfhp->nfh_fh,
1971                             nfhp->nfh_len, op, cred, p);
1972                         if (ret == NFSERR_DELAY)
1973                             (void) nfs_catnap(PZERO, ret, "nfs_create");
1974                     } while (ret == NFSERR_DELAY);
1975                     error = ret;
1976                 }
1977
1978                 /*
1979                  * If the server is handing out delegations, but we didn't
1980                  * get one because an OpenConfirm was required, try the
1981                  * Open again, to get a delegation. This is a harmless no-op,
1982                  * from a server's point of view.
1983                  */
1984                 if ((rflags & NFSV4OPEN_RESULTCONFIRM) &&
1985                     (owp->nfsow_clp->nfsc_flags & NFSCLFLAGS_GOTDELEG) &&
1986                     !error && dp == NULL) {
1987                     np = VTONFS(dvp);
1988                     do {
1989                         ret = nfsrpc_openrpc(VFSTONFS(vnode_mount(dvp)), dvp,
1990                             np->n_fhp->nfh_fh, np->n_fhp->nfh_len,
1991                             nfhp->nfh_fh, nfhp->nfh_len,
1992                             (NFSV4OPEN_ACCESSWRITE | NFSV4OPEN_ACCESSREAD), op,
1993                             name, namelen, &dp, 0, 0x0, cred, p, 0, 1);
1994                         if (ret == NFSERR_DELAY)
1995                             (void) nfs_catnap(PZERO, ret, "nfs_crt2");
1996                     } while (ret == NFSERR_DELAY);
1997                     if (ret) {
1998                         if (dp != NULL)
1999                                 FREE((caddr_t)dp, M_NFSCLDELEG);
2000                         if (ret == NFSERR_STALECLIENTID ||
2001                             ret == NFSERR_STALEDONTRECOVER)
2002                                 error = ret;
2003                     }
2004                 }
2005                 nfscl_openrelease(op, error, newone);
2006                 *unlockedp = 1;
2007         }
2008         if (nd->nd_repstat != 0 && error == 0)
2009                 error = nd->nd_repstat;
2010         if (error == NFSERR_STALECLIENTID)
2011                 nfscl_initiate_recovery(owp->nfsow_clp);
2012 nfsmout:
2013         if (!error)
2014                 *dpp = dp;
2015         else if (dp != NULL)
2016                 FREE((caddr_t)dp, M_NFSCLDELEG);
2017         mbuf_freem(nd->nd_mrep);
2018         return (error);
2019 }
2020
2021 /*
2022  * Nfs remove rpc
2023  */
2024 APPLESTATIC int
2025 nfsrpc_remove(vnode_t dvp, char *name, int namelen, vnode_t vp,
2026     struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap, int *dattrflagp,
2027     void *dstuff)
2028 {
2029         u_int32_t *tl;
2030         struct nfsrv_descript nfsd, *nd = &nfsd;
2031         struct nfsnode *np;
2032         struct nfsmount *nmp;
2033         nfsv4stateid_t dstateid;
2034         int error, ret = 0, i;
2035
2036         *dattrflagp = 0;
2037         if (namelen > NFS_MAXNAMLEN)
2038                 return (ENAMETOOLONG);
2039         nmp = VFSTONFS(vnode_mount(dvp));
2040 tryagain:
2041         if (NFSHASNFSV4(nmp) && ret == 0) {
2042                 ret = nfscl_removedeleg(vp, p, &dstateid);
2043                 if (ret == 1) {
2044                         NFSCL_REQSTART(nd, NFSPROC_RETDELEGREMOVE, vp);
2045                         NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID +
2046                             NFSX_UNSIGNED);
2047                         *tl++ = dstateid.seqid;
2048                         *tl++ = dstateid.other[0];
2049                         *tl++ = dstateid.other[1];
2050                         *tl++ = dstateid.other[2];
2051                         *tl = txdr_unsigned(NFSV4OP_PUTFH);
2052                         np = VTONFS(dvp);
2053                         (void) nfsm_fhtom(nd, np->n_fhp->nfh_fh,
2054                             np->n_fhp->nfh_len, 0);
2055                         NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
2056                         *tl = txdr_unsigned(NFSV4OP_REMOVE);
2057                 }
2058         } else {
2059                 ret = 0;
2060         }
2061         if (ret == 0)
2062                 NFSCL_REQSTART(nd, NFSPROC_REMOVE, dvp);
2063         (void) nfsm_strtom(nd, name, namelen);
2064         error = nfscl_request(nd, dvp, p, cred, dstuff);
2065         if (error)
2066                 return (error);
2067         if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) {
2068                 /* For NFSv4, parse out any Delereturn replies. */
2069                 if (ret > 0 && nd->nd_repstat != 0 &&
2070                     (nd->nd_flag & ND_NOMOREDATA)) {
2071                         /*
2072                          * If the Delegreturn failed, try again without
2073                          * it. The server will Recall, as required.
2074                          */
2075                         mbuf_freem(nd->nd_mrep);
2076                         goto tryagain;
2077                 }
2078                 for (i = 0; i < (ret * 2); i++) {
2079                         if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) ==
2080                             ND_NFSV4) {
2081                             NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
2082                             if (*(tl + 1))
2083                                 nd->nd_flag |= ND_NOMOREDATA;
2084                         }
2085                 }
2086                 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff);
2087         }
2088         if (nd->nd_repstat && !error)
2089                 error = nd->nd_repstat;
2090 nfsmout:
2091         mbuf_freem(nd->nd_mrep);
2092         return (error);
2093 }
2094
2095 /*
2096  * Do an nfs rename rpc.
2097  */
2098 APPLESTATIC int
2099 nfsrpc_rename(vnode_t fdvp, vnode_t fvp, char *fnameptr, int fnamelen,
2100     vnode_t tdvp, vnode_t tvp, char *tnameptr, int tnamelen, struct ucred *cred,
2101     NFSPROC_T *p, struct nfsvattr *fnap, struct nfsvattr *tnap,
2102     int *fattrflagp, int *tattrflagp, void *fstuff, void *tstuff)
2103 {
2104         u_int32_t *tl;
2105         struct nfsrv_descript nfsd, *nd = &nfsd;
2106         struct nfsmount *nmp;
2107         struct nfsnode *np;
2108         nfsattrbit_t attrbits;
2109         nfsv4stateid_t fdstateid, tdstateid;
2110         int error = 0, ret = 0, gottd = 0, gotfd = 0, i;
2111
2112         *fattrflagp = 0;
2113         *tattrflagp = 0;
2114         nmp = VFSTONFS(vnode_mount(fdvp));
2115         if (fnamelen > NFS_MAXNAMLEN || tnamelen > NFS_MAXNAMLEN)
2116                 return (ENAMETOOLONG);
2117 tryagain:
2118         if (NFSHASNFSV4(nmp) && ret == 0) {
2119                 ret = nfscl_renamedeleg(fvp, &fdstateid, &gotfd, tvp,
2120                     &tdstateid, &gottd, p);
2121                 if (gotfd && gottd) {
2122                         NFSCL_REQSTART(nd, NFSPROC_RETDELEGRENAME2, fvp);
2123                 } else if (gotfd) {
2124                         NFSCL_REQSTART(nd, NFSPROC_RETDELEGRENAME1, fvp);
2125                 } else if (gottd) {
2126                         NFSCL_REQSTART(nd, NFSPROC_RETDELEGRENAME1, tvp);
2127                 }
2128                 if (gotfd) {
2129                         NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID);
2130                         *tl++ = fdstateid.seqid;
2131                         *tl++ = fdstateid.other[0];
2132                         *tl++ = fdstateid.other[1];
2133                         *tl = fdstateid.other[2];
2134                         if (gottd) {
2135                                 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
2136                                 *tl = txdr_unsigned(NFSV4OP_PUTFH);
2137                                 np = VTONFS(tvp);
2138                                 (void) nfsm_fhtom(nd, np->n_fhp->nfh_fh,
2139                                     np->n_fhp->nfh_len, 0);
2140                                 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
2141                                 *tl = txdr_unsigned(NFSV4OP_DELEGRETURN);
2142                         }
2143                 }
2144                 if (gottd) {
2145                         NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID);
2146                         *tl++ = tdstateid.seqid;
2147                         *tl++ = tdstateid.other[0];
2148                         *tl++ = tdstateid.other[1];
2149                         *tl = tdstateid.other[2];
2150                 }
2151                 if (ret > 0) {
2152                         NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
2153                         *tl = txdr_unsigned(NFSV4OP_PUTFH);
2154                         np = VTONFS(fdvp);
2155                         (void) nfsm_fhtom(nd, np->n_fhp->nfh_fh,
2156                             np->n_fhp->nfh_len, 0);
2157                         NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
2158                         *tl = txdr_unsigned(NFSV4OP_SAVEFH);
2159                 }
2160         } else {
2161                 ret = 0;
2162         }
2163         if (ret == 0)
2164                 NFSCL_REQSTART(nd, NFSPROC_RENAME, fdvp);
2165         if (nd->nd_flag & ND_NFSV4) {
2166                 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
2167                 *tl = txdr_unsigned(NFSV4OP_GETATTR);
2168                 NFSWCCATTR_ATTRBIT(&attrbits);
2169                 (void) nfsrv_putattrbit(nd, &attrbits);
2170                 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
2171                 *tl = txdr_unsigned(NFSV4OP_PUTFH);
2172                 (void) nfsm_fhtom(nd, VTONFS(tdvp)->n_fhp->nfh_fh,
2173                     VTONFS(tdvp)->n_fhp->nfh_len, 0);
2174                 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
2175                 *tl = txdr_unsigned(NFSV4OP_GETATTR);
2176                 (void) nfsrv_putattrbit(nd, &attrbits);
2177                 nd->nd_flag |= ND_V4WCCATTR;
2178                 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
2179                 *tl = txdr_unsigned(NFSV4OP_RENAME);
2180         }
2181         (void) nfsm_strtom(nd, fnameptr, fnamelen);
2182         if (!(nd->nd_flag & ND_NFSV4))
2183                 (void) nfsm_fhtom(nd, VTONFS(tdvp)->n_fhp->nfh_fh,
2184                         VTONFS(tdvp)->n_fhp->nfh_len, 0);
2185         (void) nfsm_strtom(nd, tnameptr, tnamelen);
2186         error = nfscl_request(nd, fdvp, p, cred, fstuff);
2187         if (error)
2188                 return (error);
2189         if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) {
2190                 /* For NFSv4, parse out any Delereturn replies. */
2191                 if (ret > 0 && nd->nd_repstat != 0 &&
2192                     (nd->nd_flag & ND_NOMOREDATA)) {
2193                         /*
2194                          * If the Delegreturn failed, try again without
2195                          * it. The server will Recall, as required.
2196                          */
2197                         mbuf_freem(nd->nd_mrep);
2198                         goto tryagain;
2199                 }
2200                 for (i = 0; i < (ret * 2); i++) {
2201                         if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) ==
2202                             ND_NFSV4) {
2203                             NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
2204                             if (*(tl + 1)) {
2205                                 if (i == 0 && ret > 1) {
2206                                     /*
2207                                      * If the Delegreturn failed, try again
2208                                      * without it. The server will Recall, as
2209                                      * required.
2210                                      * If ret > 1, the first iteration of this
2211                                      * loop is the second DelegReturn result.
2212                                      */
2213                                     mbuf_freem(nd->nd_mrep);
2214                                     goto tryagain;
2215                                 } else {
2216                                     nd->nd_flag |= ND_NOMOREDATA;
2217                                 }
2218                             }
2219                         }
2220                 }
2221                 /* Now, the first wcc attribute reply. */
2222                 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == ND_NFSV4) {
2223                         NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
2224                         if (*(tl + 1))
2225                                 nd->nd_flag |= ND_NOMOREDATA;
2226                 }
2227                 error = nfscl_wcc_data(nd, fdvp, fnap, fattrflagp, NULL,
2228                     fstuff);
2229                 /* and the second wcc attribute reply. */
2230                 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == ND_NFSV4 &&
2231                     !error) {
2232                         NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
2233                         if (*(tl + 1))
2234                                 nd->nd_flag |= ND_NOMOREDATA;
2235                 }
2236                 if (!error)
2237                         error = nfscl_wcc_data(nd, tdvp, tnap, tattrflagp,
2238                             NULL, tstuff);
2239         }
2240         if (nd->nd_repstat && !error)
2241                 error = nd->nd_repstat;
2242 nfsmout:
2243         mbuf_freem(nd->nd_mrep);
2244         return (error);
2245 }
2246
2247 /*
2248  * nfs hard link create rpc
2249  */
2250 APPLESTATIC int
2251 nfsrpc_link(vnode_t dvp, vnode_t vp, char *name, int namelen,
2252     struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap,
2253     struct nfsvattr *nap, int *attrflagp, int *dattrflagp, void *dstuff)
2254 {
2255         u_int32_t *tl;
2256         struct nfsrv_descript nfsd, *nd = &nfsd;
2257         nfsattrbit_t attrbits;
2258         int error = 0;
2259
2260         *attrflagp = 0;
2261         *dattrflagp = 0;
2262         if (namelen > NFS_MAXNAMLEN)
2263                 return (ENAMETOOLONG);
2264         NFSCL_REQSTART(nd, NFSPROC_LINK, vp);
2265         if (nd->nd_flag & ND_NFSV4) {
2266                 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
2267                 *tl = txdr_unsigned(NFSV4OP_PUTFH);
2268         }
2269         (void) nfsm_fhtom(nd, VTONFS(dvp)->n_fhp->nfh_fh,
2270                 VTONFS(dvp)->n_fhp->nfh_len, 0);
2271         if (nd->nd_flag & ND_NFSV4) {
2272                 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
2273                 *tl = txdr_unsigned(NFSV4OP_GETATTR);
2274                 NFSWCCATTR_ATTRBIT(&attrbits);
2275                 (void) nfsrv_putattrbit(nd, &attrbits);
2276                 nd->nd_flag |= ND_V4WCCATTR;
2277                 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
2278                 *tl = txdr_unsigned(NFSV4OP_LINK);
2279         }
2280         (void) nfsm_strtom(nd, name, namelen);
2281         error = nfscl_request(nd, vp, p, cred, dstuff);
2282         if (error)
2283                 return (error);
2284         if (nd->nd_flag & ND_NFSV3) {
2285                 error = nfscl_postop_attr(nd, nap, attrflagp, dstuff);
2286                 if (!error)
2287                         error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp,
2288                             NULL, dstuff);
2289         } else if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == ND_NFSV4) {
2290                 /*
2291                  * First, parse out the PutFH and Getattr result.
2292                  */
2293                 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
2294                 if (!(*(tl + 1)))
2295                         NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
2296                 if (*(tl + 1))
2297                         nd->nd_flag |= ND_NOMOREDATA;
2298                 /*
2299                  * Get the pre-op attributes.
2300                  */
2301                 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff);
2302         }
2303         if (nd->nd_repstat && !error)
2304                 error = nd->nd_repstat;
2305 nfsmout:
2306         mbuf_freem(nd->nd_mrep);
2307         return (error);
2308 }
2309
2310 /*
2311  * nfs symbolic link create rpc
2312  */
2313 APPLESTATIC int
2314 nfsrpc_symlink(vnode_t dvp, char *name, int namelen, char *target,
2315     struct vattr *vap, struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap,
2316     struct nfsvattr *nnap, struct nfsfh **nfhpp, int *attrflagp,
2317     int *dattrflagp, void *dstuff)
2318 {
2319         u_int32_t *tl;
2320         struct nfsrv_descript nfsd, *nd = &nfsd;
2321         struct nfsmount *nmp;
2322         int slen, error = 0;
2323
2324         *nfhpp = NULL;
2325         *attrflagp = 0;
2326         *dattrflagp = 0;
2327         nmp = VFSTONFS(vnode_mount(dvp));
2328         slen = strlen(target);
2329         if (slen > NFS_MAXPATHLEN || namelen > NFS_MAXNAMLEN)
2330                 return (ENAMETOOLONG);
2331         NFSCL_REQSTART(nd, NFSPROC_SYMLINK, dvp);
2332         if (nd->nd_flag & ND_NFSV4) {
2333                 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
2334                 *tl = txdr_unsigned(NFLNK);
2335                 (void) nfsm_strtom(nd, target, slen);
2336         }
2337         (void) nfsm_strtom(nd, name, namelen);
2338         if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4))
2339                 nfscl_fillsattr(nd, vap, dvp, 0, 0);
2340         if (!(nd->nd_flag & ND_NFSV4))
2341                 (void) nfsm_strtom(nd, target, slen);
2342         if (nd->nd_flag & ND_NFSV2)
2343                 nfscl_fillsattr(nd, vap, dvp, NFSSATTR_SIZENEG1, 0);
2344         error = nfscl_request(nd, dvp, p, cred, dstuff);
2345         if (error)
2346                 return (error);
2347         if (nd->nd_flag & ND_NFSV4)
2348                 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff);
2349         if ((nd->nd_flag & ND_NFSV3) && !error) {
2350                 if (!nd->nd_repstat)
2351                         error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp);
2352                 if (!error)
2353                         error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp,
2354                             NULL, dstuff);
2355         }
2356         if (nd->nd_repstat && !error)
2357                 error = nd->nd_repstat;
2358         mbuf_freem(nd->nd_mrep);
2359         /*
2360          * Kludge: Map EEXIST => 0 assuming that it is a reply to a retry.
2361          */
2362         if (error == EEXIST)
2363                 error = 0;
2364         return (error);
2365 }
2366
2367 /*
2368  * nfs make dir rpc
2369  */
2370 APPLESTATIC int
2371 nfsrpc_mkdir(vnode_t dvp, char *name, int namelen, struct vattr *vap,
2372     struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap,
2373     struct nfsvattr *nnap, struct nfsfh **nfhpp, int *attrflagp,
2374     int *dattrflagp, void *dstuff)
2375 {
2376         u_int32_t *tl;
2377         struct nfsrv_descript nfsd, *nd = &nfsd;
2378         nfsattrbit_t attrbits;
2379         int error = 0;
2380
2381         *nfhpp = NULL;
2382         *attrflagp = 0;
2383         *dattrflagp = 0;
2384         if (namelen > NFS_MAXNAMLEN)
2385                 return (ENAMETOOLONG);
2386         NFSCL_REQSTART(nd, NFSPROC_MKDIR, dvp);
2387         if (nd->nd_flag & ND_NFSV4) {
2388                 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
2389                 *tl = txdr_unsigned(NFDIR);
2390         }
2391         (void) nfsm_strtom(nd, name, namelen);
2392         nfscl_fillsattr(nd, vap, dvp, NFSSATTR_SIZENEG1, 0);
2393         if (nd->nd_flag & ND_NFSV4) {
2394                 NFSGETATTR_ATTRBIT(&attrbits);
2395                 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
2396                 *tl++ = txdr_unsigned(NFSV4OP_GETFH);
2397                 *tl = txdr_unsigned(NFSV4OP_GETATTR);
2398                 (void) nfsrv_putattrbit(nd, &attrbits);
2399         }
2400         error = nfscl_request(nd, dvp, p, cred, dstuff);
2401         if (error)
2402                 return (error);
2403         if (nd->nd_flag & ND_NFSV4)
2404                 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff);
2405         if (!nd->nd_repstat && !error) {
2406                 if (nd->nd_flag & ND_NFSV4) {
2407                         NFSM_DISSECT(tl, u_int32_t *, 5 * NFSX_UNSIGNED);
2408                         error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL);
2409                 }
2410                 if (!error)
2411                         error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp);
2412         }
2413         if ((nd->nd_flag & ND_NFSV3) && !error)
2414                 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff);
2415         if (nd->nd_repstat && !error)
2416                 error = nd->nd_repstat;
2417 nfsmout:
2418         mbuf_freem(nd->nd_mrep);
2419         /*
2420          * Kludge: Map EEXIST => 0 assuming that you have a reply to a retry.
2421          */
2422         if (error == EEXIST)
2423                 error = 0;
2424         return (error);
2425 }
2426
2427 /*
2428  * nfs remove directory call
2429  */
2430 APPLESTATIC int
2431 nfsrpc_rmdir(vnode_t dvp, char *name, int namelen, struct ucred *cred,
2432     NFSPROC_T *p, struct nfsvattr *dnap, int *dattrflagp, void *dstuff)
2433 {
2434         struct nfsrv_descript nfsd, *nd = &nfsd;
2435         int error = 0;
2436
2437         *dattrflagp = 0;
2438         if (namelen > NFS_MAXNAMLEN)
2439                 return (ENAMETOOLONG);
2440         NFSCL_REQSTART(nd, NFSPROC_RMDIR, dvp);
2441         (void) nfsm_strtom(nd, name, namelen);
2442         error = nfscl_request(nd, dvp, p, cred, dstuff);
2443         if (error)
2444                 return (error);
2445         if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4))
2446                 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff);
2447         if (nd->nd_repstat && !error)
2448                 error = nd->nd_repstat;
2449         mbuf_freem(nd->nd_mrep);
2450         /*
2451          * Kludge: Map ENOENT => 0 assuming that you have a reply to a retry.
2452          */
2453         if (error == ENOENT)
2454                 error = 0;
2455         return (error);
2456 }
2457
2458 /*
2459  * Readdir rpc.
2460  * Always returns with either uio_resid unchanged, if you are at the
2461  * end of the directory, or uio_resid == 0, with all DIRBLKSIZ chunks
2462  * filled in.
2463  * I felt this would allow caching of directory blocks more easily
2464  * than returning a pertially filled block.
2465  * Directory offset cookies:
2466  * Oh my, what to do with them...
2467  * I can think of three ways to deal with them:
2468  * 1 - have the layer above these RPCs maintain a map between logical
2469  *     directory byte offsets and the NFS directory offset cookies
2470  * 2 - pass the opaque directory offset cookies up into userland
2471  *     and let the libc functions deal with them, via the system call
2472  * 3 - return them to userland in the "struct dirent", so future versions
2473  *     of libc can use them and do whatever is necessary to amke things work
2474  *     above these rpc calls, in the meantime
2475  * For now, I do #3 by "hiding" the directory offset cookies after the
2476  * d_name field in struct dirent. This is space inside d_reclen that
2477  * will be ignored by anything that doesn't know about them.
2478  * The directory offset cookies are filled in as the last 8 bytes of
2479  * each directory entry, after d_name. Someday, the userland libc
2480  * functions may be able to use these. In the meantime, it satisfies
2481  * OpenBSD's requirements for cookies being returned.
2482  * If expects the directory offset cookie for the read to be in uio_offset
2483  * and returns the one for the next entry after this directory block in
2484  * there, as well.
2485  */
2486 APPLESTATIC int
2487 nfsrpc_readdir(vnode_t vp, struct uio *uiop, nfsuint64 *cookiep,
2488     struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp,
2489     int *eofp, void *stuff)
2490 {
2491         int len, left;
2492         struct dirent *dp = NULL;
2493         u_int32_t *tl;
2494         nfsquad_t cookie, ncookie;
2495         struct nfsmount *nmp = VFSTONFS(vnode_mount(vp));
2496         struct nfsnode *dnp = VTONFS(vp);
2497         struct nfsvattr nfsva;
2498         struct nfsrv_descript nfsd, *nd = &nfsd;
2499         int error = 0, tlen, more_dirs = 1, blksiz = 0, bigenough = 1;
2500         int reqsize, tryformoredirs = 1, readsize, eof = 0, gotmnton = 0;
2501         long dotfileid, dotdotfileid = 0;
2502         u_int32_t fakefileno = 0xffffffff, rderr;
2503         char *cp;
2504         nfsattrbit_t attrbits, dattrbits;
2505         u_int32_t *tl2 = NULL;
2506         size_t tresid;
2507
2508         KASSERT(uiop->uio_iovcnt == 1 &&
2509             (uio_uio_resid(uiop) & (DIRBLKSIZ - 1)) == 0,
2510             ("nfs readdirrpc bad uio"));
2511
2512         /*
2513          * There is no point in reading a lot more than uio_resid, however
2514          * adding one additional DIRBLKSIZ makes sense. Since uio_resid
2515          * and nm_readdirsize are both exact multiples of DIRBLKSIZ, this
2516          * will never make readsize > nm_readdirsize.
2517          */
2518         readsize = nmp->nm_readdirsize;
2519         if (readsize > uio_uio_resid(uiop))
2520                 readsize = uio_uio_resid(uiop) + DIRBLKSIZ;
2521
2522         *attrflagp = 0;
2523         if (eofp)
2524                 *eofp = 0;
2525         tresid = uio_uio_resid(uiop);
2526         cookie.lval[0] = cookiep->nfsuquad[0];
2527         cookie.lval[1] = cookiep->nfsuquad[1];
2528         nd->nd_mrep = NULL;
2529
2530         /*
2531          * For NFSv4, first create the "." and ".." entries.
2532          */
2533         if (NFSHASNFSV4(nmp)) {
2534                 reqsize = 6 * NFSX_UNSIGNED;
2535                 NFSGETATTR_ATTRBIT(&dattrbits);
2536                 NFSZERO_ATTRBIT(&attrbits);
2537                 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_FILEID);
2538                 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_TYPE);
2539                 if (NFSISSET_ATTRBIT(&dnp->n_vattr.na_suppattr,
2540                     NFSATTRBIT_MOUNTEDONFILEID)) {
2541                         NFSSETBIT_ATTRBIT(&attrbits,
2542                             NFSATTRBIT_MOUNTEDONFILEID);
2543                         gotmnton = 1;
2544                 } else {
2545                         /*
2546                          * Must fake it. Use the fileno, except when the
2547                          * fsid is != to that of the directory. For that
2548                          * case, generate a fake fileno that is not the same.
2549                          */
2550                         NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_FSID);
2551                         gotmnton = 0;
2552                 }
2553
2554                 /*
2555                  * Joy, oh joy. For V4 we get to hand craft '.' and '..'.
2556                  */
2557                 if (uiop->uio_offset == 0) {
2558 #if defined(__FreeBSD_version) && __FreeBSD_version >= 800000
2559                         error = VOP_GETATTR(vp, &nfsva.na_vattr, cred);
2560 #else
2561                         error = VOP_GETATTR(vp, &nfsva.na_vattr, cred, p);
2562 #endif
2563                         if (error)
2564                             return (error);
2565                         dotfileid = nfsva.na_fileid;
2566                         NFSCL_REQSTART(nd, NFSPROC_LOOKUPP, vp);
2567                         NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
2568                         *tl++ = txdr_unsigned(NFSV4OP_GETFH);
2569                         *tl = txdr_unsigned(NFSV4OP_GETATTR);
2570                         (void) nfsrv_putattrbit(nd, &attrbits);
2571                         error = nfscl_request(nd, vp, p, cred, stuff);
2572                         if (error)
2573                             return (error);
2574                         if (nd->nd_repstat == 0) {
2575                             NFSM_DISSECT(tl, u_int32_t *, 3*NFSX_UNSIGNED);
2576                             len = fxdr_unsigned(int, *(tl + 2));
2577                             if (len > 0 && len <= NFSX_V4FHMAX)
2578                                 error = nfsm_advance(nd, NFSM_RNDUP(len), -1);
2579                             else
2580                                 error = EPERM;
2581                             if (!error) {
2582                                 NFSM_DISSECT(tl, u_int32_t *, 2*NFSX_UNSIGNED);
2583                                 nfsva.na_mntonfileno = 0xffffffff;
2584                                 error = nfsv4_loadattr(nd, NULL, &nfsva, NULL,
2585                                     NULL, 0, NULL, NULL, NULL, NULL, NULL, 0,
2586                                     NULL, NULL, NULL, p, cred);
2587                                 if (error) {
2588                                     dotdotfileid = dotfileid;
2589                                 } else if (gotmnton) {
2590                                     if (nfsva.na_mntonfileno != 0xffffffff)
2591                                         dotdotfileid = nfsva.na_mntonfileno;
2592                                     else
2593                                         dotdotfileid = nfsva.na_fileid;
2594                                 } else if (nfsva.na_filesid[0] ==
2595                                     dnp->n_vattr.na_filesid[0] &&
2596                                     nfsva.na_filesid[1] ==
2597                                     dnp->n_vattr.na_filesid[1]) {
2598                                     dotdotfileid = nfsva.na_fileid;
2599                                 } else {
2600                                     do {
2601                                         fakefileno--;
2602                                     } while (fakefileno ==
2603                                         nfsva.na_fileid);
2604                                     dotdotfileid = fakefileno;
2605                                 }
2606                             }
2607                         } else if (nd->nd_repstat == NFSERR_NOENT) {
2608                             /*
2609                              * Lookupp returns NFSERR_NOENT when we are
2610                              * at the root, so just use the current dir.
2611                              */
2612                             nd->nd_repstat = 0;
2613                             dotdotfileid = dotfileid;
2614                         } else {
2615                             error = nd->nd_repstat;
2616                         }
2617                         mbuf_freem(nd->nd_mrep);
2618                         if (error)
2619                             return (error);
2620                         nd->nd_mrep = NULL;
2621                         dp = (struct dirent *) CAST_DOWN(caddr_t, uio_iov_base(uiop));
2622                         dp->d_type = DT_DIR;
2623                         dp->d_fileno = dotfileid;
2624                         dp->d_namlen = 1;
2625                         dp->d_name[0] = '.';
2626                         dp->d_name[1] = '\0';
2627                         dp->d_reclen = DIRENT_SIZE(dp) + NFSX_HYPER;
2628                         /*
2629                          * Just make these offset cookie 0.
2630                          */
2631                         tl = (u_int32_t *)&dp->d_name[4];
2632                         *tl++ = 0;
2633                         *tl = 0;
2634                         blksiz += dp->d_reclen;
2635                         uio_uio_resid_add(uiop, -(dp->d_reclen));
2636                         uiop->uio_offset += dp->d_reclen;
2637                         uio_iov_base_add(uiop, dp->d_reclen);
2638                         uio_iov_len_add(uiop, -(dp->d_reclen));
2639                         dp = (struct dirent *) CAST_DOWN(caddr_t, uio_iov_base(uiop));
2640                         dp->d_type = DT_DIR;
2641                         dp->d_fileno = dotdotfileid;
2642                         dp->d_namlen = 2;
2643                         dp->d_name[0] = '.';
2644                         dp->d_name[1] = '.';
2645                         dp->d_name[2] = '\0';
2646                         dp->d_reclen = DIRENT_SIZE(dp) + NFSX_HYPER;
2647                         /*
2648                          * Just make these offset cookie 0.
2649                          */
2650                         tl = (u_int32_t *)&dp->d_name[4];
2651                         *tl++ = 0;
2652                         *tl = 0;
2653                         blksiz += dp->d_reclen;
2654                         uio_uio_resid_add(uiop, -(dp->d_reclen));
2655                         uiop->uio_offset += dp->d_reclen;
2656                         uio_iov_base_add(uiop, dp->d_reclen);
2657                         uio_iov_len_add(uiop, -(dp->d_reclen));
2658                 }
2659                 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_RDATTRERROR);
2660         } else {
2661                 reqsize = 5 * NFSX_UNSIGNED;
2662         }
2663
2664
2665         /*
2666          * Loop around doing readdir rpc's of size readsize.
2667          * The stopping criteria is EOF or buffer full.
2668          */
2669         while (more_dirs && bigenough) {
2670                 *attrflagp = 0;
2671                 NFSCL_REQSTART(nd, NFSPROC_READDIR, vp);
2672                 if (nd->nd_flag & ND_NFSV2) {
2673                         NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
2674                         *tl++ = cookie.lval[1];
2675                         *tl = txdr_unsigned(readsize);
2676                 } else {
2677                         NFSM_BUILD(tl, u_int32_t *, reqsize);
2678                         *tl++ = cookie.lval[0];
2679                         *tl++ = cookie.lval[1];
2680                         if (cookie.qval == 0) {
2681                                 *tl++ = 0;
2682                                 *tl++ = 0;
2683                         } else {
2684                                 NFSLOCKNODE(dnp);
2685                                 *tl++ = dnp->n_cookieverf.nfsuquad[0];
2686                                 *tl++ = dnp->n_cookieverf.nfsuquad[1];
2687                                 NFSUNLOCKNODE(dnp);
2688                         }
2689                         if (nd->nd_flag & ND_NFSV4) {
2690                                 *tl++ = txdr_unsigned(readsize);
2691                                 *tl = txdr_unsigned(readsize);
2692                                 (void) nfsrv_putattrbit(nd, &attrbits);
2693                                 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
2694                                 *tl = txdr_unsigned(NFSV4OP_GETATTR);
2695                                 (void) nfsrv_putattrbit(nd, &dattrbits);
2696                         } else {
2697                                 *tl = txdr_unsigned(readsize);
2698                         }
2699                 }
2700                 error = nfscl_request(nd, vp, p, cred, stuff);
2701                 if (error)
2702                         return (error);
2703                 if (!(nd->nd_flag & ND_NFSV2)) {
2704                         if (nd->nd_flag & ND_NFSV3)
2705                                 error = nfscl_postop_attr(nd, nap, attrflagp,
2706                                     stuff);
2707                         if (!nd->nd_repstat && !error) {
2708                                 NFSM_DISSECT(tl, u_int32_t *, NFSX_HYPER);
2709                                 NFSLOCKNODE(dnp);
2710                                 dnp->n_cookieverf.nfsuquad[0] = *tl++;
2711                                 dnp->n_cookieverf.nfsuquad[1] = *tl;
2712                                 NFSUNLOCKNODE(dnp);
2713                         }
2714                 }
2715                 if (nd->nd_repstat || error) {
2716                         if (!error)
2717                                 error = nd->nd_repstat;
2718                         goto nfsmout;
2719                 }
2720                 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
2721                 more_dirs = fxdr_unsigned(int, *tl);
2722                 if (!more_dirs)
2723                         tryformoredirs = 0;
2724
2725                 /* loop thru the dir entries, doctoring them to 4bsd form */
2726                 while (more_dirs && bigenough) {
2727                         if (nd->nd_flag & ND_NFSV4) {
2728                                 NFSM_DISSECT(tl, u_int32_t *, 3*NFSX_UNSIGNED);
2729                                 ncookie.lval[0] = *tl++;
2730                                 ncookie.lval[1] = *tl++;
2731                                 len = fxdr_unsigned(int, *tl);
2732                         } else if (nd->nd_flag & ND_NFSV3) {
2733                                 NFSM_DISSECT(tl, u_int32_t *, 3*NFSX_UNSIGNED);
2734                                 nfsva.na_fileid =
2735                                     fxdr_unsigned(long, *++tl);
2736                                 len = fxdr_unsigned(int, *++tl);
2737                         } else {
2738                                 NFSM_DISSECT(tl, u_int32_t *, 2*NFSX_UNSIGNED);
2739                                 nfsva.na_fileid =
2740                                     fxdr_unsigned(long, *tl++);
2741                                 len = fxdr_unsigned(int, *tl);
2742                         }
2743                         if (len <= 0 || len > NFS_MAXNAMLEN) {
2744                                 error = EBADRPC;
2745                                 goto nfsmout;
2746                         }
2747                         tlen = NFSM_RNDUP(len);
2748                         if (tlen == len)
2749                                 tlen += 4;  /* To ensure null termination */
2750                         left = DIRBLKSIZ - blksiz;
2751                         if ((int)(tlen + DIRHDSIZ + NFSX_HYPER) > left) {
2752                                 dp->d_reclen += left;
2753                                 uio_iov_base_add(uiop, left);
2754                                 uio_iov_len_add(uiop, -(left));
2755                                 uio_uio_resid_add(uiop, -(left));
2756                                 uiop->uio_offset += left;
2757                                 blksiz = 0;
2758                         }
2759                         if ((int)(tlen + DIRHDSIZ + NFSX_HYPER) > uio_uio_resid(uiop))
2760                                 bigenough = 0;
2761                         if (bigenough) {
2762                                 dp = (struct dirent *) CAST_DOWN(caddr_t, uio_iov_base(uiop));
2763                                 dp->d_namlen = len;
2764                                 dp->d_reclen = tlen + DIRHDSIZ + NFSX_HYPER;
2765                                 dp->d_type = DT_UNKNOWN;
2766                                 blksiz += dp->d_reclen;
2767                                 if (blksiz == DIRBLKSIZ)
2768                                         blksiz = 0;
2769                                 uio_uio_resid_add(uiop, -(DIRHDSIZ));
2770                                 uiop->uio_offset += DIRHDSIZ;
2771                                 uio_iov_base_add(uiop, DIRHDSIZ);
2772                                 uio_iov_len_add(uiop, -(DIRHDSIZ));
2773                                 error = nfsm_mbufuio(nd, uiop, len);
2774                                 if (error)
2775                                         goto nfsmout;
2776                                 cp = CAST_DOWN(caddr_t, uio_iov_base(uiop));
2777                                 tlen -= len;
2778                                 *cp = '\0';     /* null terminate */
2779                                 cp += tlen;     /* points to cookie storage */
2780                                 tl2 = (u_int32_t *)cp;
2781                                 uio_iov_base_add(uiop, (tlen + NFSX_HYPER));
2782                                 uio_iov_len_add(uiop, -(tlen + NFSX_HYPER));
2783                                 uio_uio_resid_add(uiop, -(tlen + NFSX_HYPER));
2784                                 uiop->uio_offset += (tlen + NFSX_HYPER);
2785                         } else {
2786                                 error = nfsm_advance(nd, NFSM_RNDUP(len), -1);
2787                                 if (error)
2788                                         goto nfsmout;
2789                         }
2790                         if (nd->nd_flag & ND_NFSV4) {
2791                                 rderr = 0;
2792                                 nfsva.na_mntonfileno = 0xffffffff;
2793                                 error = nfsv4_loadattr(nd, NULL, &nfsva, NULL,
2794                                     NULL, 0, NULL, NULL, NULL, NULL, NULL, 0,
2795                                     NULL, NULL, &rderr, p, cred);
2796                                 if (error)
2797                                         goto nfsmout;
2798                                 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
2799                         } else if (nd->nd_flag & ND_NFSV3) {
2800                                 NFSM_DISSECT(tl, u_int32_t *, 3*NFSX_UNSIGNED);
2801                                 ncookie.lval[0] = *tl++;
2802                                 ncookie.lval[1] = *tl++;
2803                         } else {
2804                                 NFSM_DISSECT(tl, u_int32_t *, 2*NFSX_UNSIGNED);
2805                                 ncookie.lval[0] = 0;
2806                                 ncookie.lval[1] = *tl++;
2807                         }
2808                         if (bigenough) {
2809                             if (nd->nd_flag & ND_NFSV4) {
2810                                 if (rderr) {
2811                                     dp->d_fileno = 0;
2812                                 } else {
2813                                     if (gotmnton) {
2814                                         if (nfsva.na_mntonfileno != 0xffffffff)
2815                                             dp->d_fileno = nfsva.na_mntonfileno;
2816                                         else
2817                                             dp->d_fileno = nfsva.na_fileid;
2818                                     } else if (nfsva.na_filesid[0] ==
2819                                         dnp->n_vattr.na_filesid[0] &&
2820                                         nfsva.na_filesid[1] ==
2821                                         dnp->n_vattr.na_filesid[1]) {
2822                                         dp->d_fileno = nfsva.na_fileid;
2823                                     } else {
2824                                         do {
2825                                             fakefileno--;
2826                                         } while (fakefileno ==
2827                                             nfsva.na_fileid);
2828                                         dp->d_fileno = fakefileno;
2829                                     }
2830                                     dp->d_type = vtonfs_dtype(nfsva.na_type);
2831                                 }
2832                             } else {
2833                                 dp->d_fileno = nfsva.na_fileid;
2834                             }
2835                             *tl2++ = cookiep->nfsuquad[0] = cookie.lval[0] =
2836                                 ncookie.lval[0];
2837                             *tl2 = cookiep->nfsuquad[1] = cookie.lval[1] =
2838                                 ncookie.lval[1];
2839                         }
2840                         more_dirs = fxdr_unsigned(int, *tl);
2841                 }
2842                 /*
2843                  * If at end of rpc data, get the eof boolean
2844                  */
2845                 if (!more_dirs) {
2846                         NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
2847                         eof = fxdr_unsigned(int, *tl);
2848                         if (tryformoredirs)
2849                                 more_dirs = !eof;
2850                         if (nd->nd_flag & ND_NFSV4) {
2851                                 error = nfscl_postop_attr(nd, nap, attrflagp,
2852                                     stuff);
2853                                 if (error)
2854                                         goto nfsmout;
2855                         }
2856                 }
2857                 mbuf_freem(nd->nd_mrep);
2858                 nd->nd_mrep = NULL;
2859         }
2860         /*
2861          * Fill last record, iff any, out to a multiple of DIRBLKSIZ
2862          * by increasing d_reclen for the last record.
2863          */
2864         if (blksiz > 0) {
2865                 left = DIRBLKSIZ - blksiz;
2866                 dp->d_reclen += left;
2867                 uio_iov_base_add(uiop, left);
2868                 uio_iov_len_add(uiop, -(left));
2869                 uio_uio_resid_add(uiop, -(left));
2870                 uiop->uio_offset += left;
2871         }
2872
2873         /*
2874          * If returning no data, assume end of file.
2875          * If not bigenough, return not end of file, since you aren't
2876          *    returning all the data
2877          * Otherwise, return the eof flag from the server.
2878          */
2879         if (eofp) {
2880                 if (tresid == ((size_t)(uio_uio_resid(uiop))))
2881                         *eofp = 1;
2882                 else if (!bigenough)
2883                         *eofp = 0;
2884                 else
2885                         *eofp = eof;
2886         }
2887
2888         /*
2889          * Add extra empty records to any remaining DIRBLKSIZ chunks.
2890          */
2891         while (uio_uio_resid(uiop) > 0 && ((size_t)(uio_uio_resid(uiop))) != tresid) {
2892                 dp = (struct dirent *) CAST_DOWN(caddr_t, uio_iov_base(uiop));
2893                 dp->d_type = DT_UNKNOWN;
2894                 dp->d_fileno = 0;
2895                 dp->d_namlen = 0;
2896                 dp->d_name[0] = '\0';
2897                 tl = (u_int32_t *)&dp->d_name[4];
2898                 *tl++ = cookie.lval[0];
2899                 *tl = cookie.lval[1];
2900                 dp->d_reclen = DIRBLKSIZ;
2901                 uio_iov_base_add(uiop, DIRBLKSIZ);
2902                 uio_iov_len_add(uiop, -(DIRBLKSIZ));
2903                 uio_uio_resid_add(uiop, -(DIRBLKSIZ));
2904                 uiop->uio_offset += DIRBLKSIZ;
2905         }
2906
2907 nfsmout:
2908         if (nd->nd_mrep != NULL)
2909                 mbuf_freem(nd->nd_mrep);
2910         return (error);
2911 }
2912
2913 #ifndef APPLE
2914 /*
2915  * NFS V3 readdir plus RPC. Used in place of nfsrpc_readdir().
2916  * (Also used for NFS V4 when mount flag set.)
2917  * (ditto above w.r.t. multiple of DIRBLKSIZ, etc.)
2918  */
2919 APPLESTATIC int
2920 nfsrpc_readdirplus(vnode_t vp, struct uio *uiop, nfsuint64 *cookiep,
2921     struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp,
2922     int *eofp, void *stuff)
2923 {
2924         int len, left;
2925         struct dirent *dp = NULL;
2926         u_int32_t *tl;
2927         vnode_t newvp = NULLVP;
2928         struct nfsrv_descript nfsd, *nd = &nfsd;
2929         struct nameidata nami, *ndp = &nami;
2930         struct componentname *cnp = &ndp->ni_cnd;
2931         struct nfsmount *nmp = VFSTONFS(vnode_mount(vp));
2932         struct nfsnode *dnp = VTONFS(vp), *np;
2933         struct nfsvattr nfsva;
2934         struct nfsfh *nfhp;
2935         nfsquad_t cookie, ncookie;
2936         int error = 0, tlen, more_dirs = 1, blksiz = 0, bigenough = 1;
2937         int attrflag, tryformoredirs = 1, eof = 0, gotmnton = 0;
2938         int unlocknewvp = 0;
2939         long dotfileid, dotdotfileid = 0, fileno = 0;
2940         char *cp;
2941         nfsattrbit_t attrbits, dattrbits;
2942         size_t tresid;
2943         u_int32_t *tl2 = NULL, fakefileno = 0xffffffff, rderr;
2944
2945         KASSERT(uiop->uio_iovcnt == 1 &&
2946             (uio_uio_resid(uiop) & (DIRBLKSIZ - 1)) == 0,
2947             ("nfs readdirplusrpc bad uio"));
2948         *attrflagp = 0;
2949         if (eofp != NULL)
2950                 *eofp = 0;
2951         ndp->ni_dvp = vp;
2952         nd->nd_mrep = NULL;
2953         cookie.lval[0] = cookiep->nfsuquad[0];
2954         cookie.lval[1] = cookiep->nfsuquad[1];
2955         tresid = uio_uio_resid(uiop);
2956
2957         /*
2958          * For NFSv4, first create the "." and ".." entries.
2959          */
2960         if (NFSHASNFSV4(nmp)) {
2961                 NFSGETATTR_ATTRBIT(&dattrbits);
2962                 NFSZERO_ATTRBIT(&attrbits);
2963                 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_FILEID);
2964                 if (NFSISSET_ATTRBIT(&dnp->n_vattr.na_suppattr,
2965                     NFSATTRBIT_MOUNTEDONFILEID)) {
2966                         NFSSETBIT_ATTRBIT(&attrbits,
2967                             NFSATTRBIT_MOUNTEDONFILEID);
2968                         gotmnton = 1;
2969                 } else {
2970                         /*
2971                          * Must fake it. Use the fileno, except when the
2972                          * fsid is != to that of the directory. For that
2973                          * case, generate a fake fileno that is not the same.
2974                          */
2975                         NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_FSID);
2976                         gotmnton = 0;
2977                 }
2978
2979                 /*
2980                  * Joy, oh joy. For V4 we get to hand craft '.' and '..'.
2981                  */
2982                 if (uiop->uio_offset == 0) {
2983 #if defined(__FreeBSD_version) && __FreeBSD_version >= 800000
2984                         error = VOP_GETATTR(vp, &nfsva.na_vattr, cred);
2985 #else
2986                         error = VOP_GETATTR(vp, &nfsva.na_vattr, cred, p);
2987 #endif
2988                         if (error)
2989                             return (error);
2990                         dotfileid = nfsva.na_fileid;
2991                         NFSCL_REQSTART(nd, NFSPROC_LOOKUPP, vp);
2992                         NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
2993                         *tl++ = txdr_unsigned(NFSV4OP_GETFH);
2994                         *tl = txdr_unsigned(NFSV4OP_GETATTR);
2995                         (void) nfsrv_putattrbit(nd, &attrbits);
2996                         error = nfscl_request(nd, vp, p, cred, stuff);
2997                         if (error)
2998                             return (error);
2999                         if (nd->nd_repstat == 0) {
3000                             NFSM_DISSECT(tl, u_int32_t *, 3*NFSX_UNSIGNED);
3001                             len = fxdr_unsigned(int, *(tl + 2));
3002                             if (len > 0 && len <= NFSX_V4FHMAX)
3003                                 error = nfsm_advance(nd, NFSM_RNDUP(len), -1);
3004                             else
3005                                 error = EPERM;
3006                             if (!error) {
3007                                 NFSM_DISSECT(tl, u_int32_t *, 2*NFSX_UNSIGNED);
3008                                 nfsva.na_mntonfileno = 0xffffffff;
3009                                 error = nfsv4_loadattr(nd, NULL, &nfsva, NULL,
3010                                     NULL, 0, NULL, NULL, NULL, NULL, NULL, 0,
3011                                     NULL, NULL, NULL, p, cred);
3012                                 if (error) {
3013                                     dotdotfileid = dotfileid;
3014                                 } else if (gotmnton) {
3015                                     if (nfsva.na_mntonfileno != 0xffffffff)
3016                                         dotdotfileid = nfsva.na_mntonfileno;
3017                                     else
3018                                         dotdotfileid = nfsva.na_fileid;
3019                                 } else if (nfsva.na_filesid[0] ==
3020                                     dnp->n_vattr.na_filesid[0] &&
3021                                     nfsva.na_filesid[1] ==
3022                                     dnp->n_vattr.na_filesid[1]) {
3023                                     dotdotfileid = nfsva.na_fileid;
3024                                 } else {
3025                                     do {
3026                                         fakefileno--;
3027                                     } while (fakefileno ==
3028                                         nfsva.na_fileid);
3029                                     dotdotfileid = fakefileno;
3030                                 }
3031                             }
3032                         } else if (nd->nd_repstat == NFSERR_NOENT) {
3033                             /*
3034                              * Lookupp returns NFSERR_NOENT when we are
3035                              * at the root, so just use the current dir.
3036                              */
3037                             nd->nd_repstat = 0;
3038                             dotdotfileid = dotfileid;
3039                         } else {
3040                             error = nd->nd_repstat;
3041                         }
3042                         mbuf_freem(nd->nd_mrep);
3043                         if (error)
3044                             return (error);
3045                         nd->nd_mrep = NULL;
3046                         dp = (struct dirent *)uio_iov_base(uiop);
3047                         dp->d_type = DT_DIR;
3048                         dp->d_fileno = dotfileid;
3049                         dp->d_namlen = 1;
3050                         dp->d_name[0] = '.';
3051                         dp->d_name[1] = '\0';
3052                         dp->d_reclen = DIRENT_SIZE(dp) + NFSX_HYPER;
3053                         /*
3054                          * Just make these offset cookie 0.
3055                          */
3056                         tl = (u_int32_t *)&dp->d_name[4];
3057                         *tl++ = 0;
3058                         *tl = 0;
3059                         blksiz += dp->d_reclen;
3060                         uio_uio_resid_add(uiop, -(dp->d_reclen));
3061                         uiop->uio_offset += dp->d_reclen;
3062                         uio_iov_base_add(uiop, dp->d_reclen);
3063                         uio_iov_len_add(uiop, -(dp->d_reclen));
3064                         dp = (struct dirent *)uio_iov_base(uiop);
3065                         dp->d_type = DT_DIR;
3066                         dp->d_fileno = dotdotfileid;
3067                         dp->d_namlen = 2;
3068                         dp->d_name[0] = '.';
3069                         dp->d_name[1] = '.';
3070                         dp->d_name[2] = '\0';
3071                         dp->d_reclen = DIRENT_SIZE(dp) + NFSX_HYPER;
3072                         /*
3073                          * Just make these offset cookie 0.
3074                          */
3075                         tl = (u_int32_t *)&dp->d_name[4];
3076                         *tl++ = 0;
3077                         *tl = 0;
3078                         blksiz += dp->d_reclen;
3079                         uio_uio_resid_add(uiop, -(dp->d_reclen));
3080                         uiop->uio_offset += dp->d_reclen;
3081                         uio_iov_base_add(uiop, dp->d_reclen);
3082                         uio_iov_len_add(uiop, -(dp->d_reclen));
3083                 }
3084                 NFSREADDIRPLUS_ATTRBIT(&attrbits);
3085                 if (gotmnton)
3086                         NFSSETBIT_ATTRBIT(&attrbits,
3087                             NFSATTRBIT_MOUNTEDONFILEID);
3088         }
3089
3090         /*
3091          * Loop around doing readdir rpc's of size nm_readdirsize.
3092          * The stopping criteria is EOF or buffer full.
3093          */
3094         while (more_dirs && bigenough) {
3095                 *attrflagp = 0;
3096                 NFSCL_REQSTART(nd, NFSPROC_READDIRPLUS, vp);
3097                 NFSM_BUILD(tl, u_int32_t *, 6 * NFSX_UNSIGNED);
3098                 *tl++ = cookie.lval[0];
3099                 *tl++ = cookie.lval[1];
3100                 if (cookie.qval == 0) {
3101                         *tl++ = 0;
3102                         *tl++ = 0;
3103                 } else {
3104                         NFSLOCKNODE(dnp);
3105                         *tl++ = dnp->n_cookieverf.nfsuquad[0];
3106                         *tl++ = dnp->n_cookieverf.nfsuquad[1];
3107                         NFSUNLOCKNODE(dnp);
3108                 }
3109                 *tl++ = txdr_unsigned(nmp->nm_readdirsize);
3110                 *tl = txdr_unsigned(nmp->nm_readdirsize);
3111                 if (nd->nd_flag & ND_NFSV4) {
3112                         (void) nfsrv_putattrbit(nd, &attrbits);
3113                         NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
3114                         *tl = txdr_unsigned(NFSV4OP_GETATTR);
3115                         (void) nfsrv_putattrbit(nd, &dattrbits);
3116                 }
3117                 error = nfscl_request(nd, vp, p, cred, stuff);
3118                 if (error)
3119                         return (error);
3120                 if (nd->nd_flag & ND_NFSV3)
3121                         error = nfscl_postop_attr(nd, nap, attrflagp, stuff);
3122                 if (nd->nd_repstat || error) {
3123                         if (!error)
3124                                 error = nd->nd_repstat;
3125                         goto nfsmout;
3126                 }
3127                 NFSM_DISSECT(tl, u_int32_t *, 3 * NFSX_UNSIGNED);
3128                 NFSLOCKNODE(dnp);
3129                 dnp->n_cookieverf.nfsuquad[0] = *tl++;
3130                 dnp->n_cookieverf.nfsuquad[1] = *tl++;
3131                 NFSUNLOCKNODE(dnp);
3132                 more_dirs = fxdr_unsigned(int, *tl);
3133                 if (!more_dirs)
3134                         tryformoredirs = 0;
3135
3136                 /* loop thru the dir entries, doctoring them to 4bsd form */
3137                 while (more_dirs && bigenough) {
3138                         NFSM_DISSECT(tl, u_int32_t *, 3 * NFSX_UNSIGNED);
3139                         if (nd->nd_flag & ND_NFSV4) {
3140                                 ncookie.lval[0] = *tl++;
3141                                 ncookie.lval[1] = *tl++;
3142                         } else {
3143                                 fileno = fxdr_unsigned(long, *++tl);
3144                                 tl++;
3145                         }
3146                         len = fxdr_unsigned(int, *tl);
3147                         if (len <= 0 || len > NFS_MAXNAMLEN) {
3148                                 error = EBADRPC;
3149                                 goto nfsmout;
3150                         }
3151                         tlen = NFSM_RNDUP(len);
3152                         if (tlen == len)
3153                                 tlen += 4;  /* To ensure null termination */
3154                         left = DIRBLKSIZ - blksiz;
3155                         if ((tlen + DIRHDSIZ + NFSX_HYPER) > left) {
3156                                 dp->d_reclen += left;
3157                                 uio_iov_base_add(uiop, left);
3158                                 uio_iov_len_add(uiop, -(left));
3159                                 uio_uio_resid_add(uiop, -(left));
3160                                 uiop->uio_offset += left;
3161                                 blksiz = 0;
3162                         }
3163                         if ((tlen + DIRHDSIZ + NFSX_HYPER) > uio_uio_resid(uiop))
3164                                 bigenough = 0;
3165                         if (bigenough) {
3166                                 dp = (struct dirent *)uio_iov_base(uiop);
3167                                 dp->d_namlen = len;
3168                                 dp->d_reclen = tlen + DIRHDSIZ + NFSX_HYPER;
3169                                 dp->d_type = DT_UNKNOWN;
3170                                 blksiz += dp->d_reclen;
3171                                 if (blksiz == DIRBLKSIZ)
3172                                         blksiz = 0;
3173                                 uio_uio_resid_add(uiop, -(DIRHDSIZ));
3174                                 uiop->uio_offset += DIRHDSIZ;
3175                                 uio_iov_base_add(uiop, DIRHDSIZ);
3176                                 uio_iov_len_add(uiop, -(DIRHDSIZ));
3177                                 cnp->cn_nameptr = uio_iov_base(uiop);
3178                                 cnp->cn_namelen = len;
3179                                 NFSCNHASHZERO(cnp);
3180                                 error = nfsm_mbufuio(nd, uiop, len);
3181                                 if (error)
3182                                         goto nfsmout;
3183                                 cp = uio_iov_base(uiop);
3184                                 tlen -= len;
3185                                 *cp = '\0';
3186                                 cp += tlen;     /* points to cookie storage */
3187                                 tl2 = (u_int32_t *)cp;
3188                                 uio_iov_base_add(uiop, (tlen + NFSX_HYPER));
3189                                 uio_iov_len_add(uiop, -(tlen + NFSX_HYPER));
3190                                 uio_uio_resid_add(uiop, -(tlen + NFSX_HYPER));
3191                                 uiop->uio_offset += (tlen + NFSX_HYPER);
3192                         } else {
3193                                 error = nfsm_advance(nd, NFSM_RNDUP(len), -1);
3194                                 if (error)
3195                                         goto nfsmout;
3196                         }
3197                         nfhp = NULL;
3198                         if (nd->nd_flag & ND_NFSV3) {
3199                                 NFSM_DISSECT(tl, u_int32_t *, 3*NFSX_UNSIGNED);
3200                                 ncookie.lval[0] = *tl++;
3201                                 ncookie.lval[1] = *tl++;
3202                                 attrflag = fxdr_unsigned(int, *tl);
3203                                 if (attrflag) {
3204                                   error = nfsm_loadattr(nd, &nfsva);
3205                                   if (error)
3206                                         goto nfsmout;
3207                                 }
3208                                 NFSM_DISSECT(tl,u_int32_t *,NFSX_UNSIGNED);
3209                                 if (*tl) {
3210                                         error = nfsm_getfh(nd, &nfhp);
3211                                         if (error)
3212                                             goto nfsmout;
3213                                 }
3214                                 if (!attrflag && nfhp != NULL) {
3215                                         FREE((caddr_t)nfhp, M_NFSFH);
3216                                         nfhp = NULL;
3217                                 }
3218                         } else {
3219                                 rderr = 0;
3220                                 nfsva.na_mntonfileno = 0xffffffff;
3221                                 error = nfsv4_loadattr(nd, NULL, &nfsva, &nfhp,
3222                                     NULL, 0, NULL, NULL, NULL, NULL, NULL, 0,
3223                                     NULL, NULL, &rderr, p, cred);
3224                                 if (error)
3225                                         goto nfsmout;
3226                         }
3227
3228                         if (bigenough) {
3229                             if (nd->nd_flag & ND_NFSV4) {
3230                                 if (rderr) {
3231                                     dp->d_fileno = 0;
3232                                 } else if (gotmnton) {
3233                                     if (nfsva.na_mntonfileno != 0xffffffff)
3234                                         dp->d_fileno = nfsva.na_mntonfileno;
3235                                     else
3236                                         dp->d_fileno = nfsva.na_fileid;
3237                                 } else if (nfsva.na_filesid[0] ==
3238                                     dnp->n_vattr.na_filesid[0] &&
3239                                     nfsva.na_filesid[1] ==
3240                                     dnp->n_vattr.na_filesid[1]) {
3241                                     dp->d_fileno = nfsva.na_fileid;
3242                                 } else {
3243                                     do {
3244                                         fakefileno--;
3245                                     } while (fakefileno ==
3246                                         nfsva.na_fileid);
3247                                     dp->d_fileno = fakefileno;
3248                                 }
3249                             } else {
3250                                 dp->d_fileno = fileno;
3251                             }
3252                             *tl2++ = cookiep->nfsuquad[0] = cookie.lval[0] =
3253                                 ncookie.lval[0];
3254                             *tl2 = cookiep->nfsuquad[1] = cookie.lval[1] =
3255                                 ncookie.lval[1];
3256
3257                             if (nfhp != NULL) {
3258                                 if (NFSRV_CMPFH(nfhp->nfh_fh, nfhp->nfh_len,
3259                                     dnp->n_fhp->nfh_fh, dnp->n_fhp->nfh_len)) {
3260                                     VREF(vp);
3261                                     newvp = vp;
3262                                     unlocknewvp = 0;
3263                                     FREE((caddr_t)nfhp, M_NFSFH);
3264                                     np = dnp;
3265                                 } else {
3266                                     error = nfscl_nget(vnode_mount(vp), vp,
3267                                       nfhp, cnp, p, &np, NULL);
3268                                     if (!error) {
3269                                         newvp = NFSTOV(np);
3270                                         unlocknewvp = 1;
3271                                     }
3272                                 }
3273                                 nfhp = NULL;
3274                                 if (newvp != NULLVP) {
3275                                     error = nfscl_loadattrcache(&newvp,
3276                                         &nfsva, NULL, NULL, 0, 0);
3277                                     if (error) {
3278                                         if (unlocknewvp)
3279                                             vput(newvp);
3280                                         else
3281                                             vrele(newvp);
3282                                         goto nfsmout;
3283                                     }
3284                                     dp->d_type =
3285                                         vtonfs_dtype(np->n_vattr.na_type);
3286                                     ndp->ni_vp = newvp;
3287                                     NFSCNHASH(cnp, HASHINIT);
3288                                     if (cnp->cn_namelen <= NCHNAMLEN) {
3289                                         np->n_ctime =
3290                                           np->n_vattr.na_ctime.tv_sec;
3291                                         cache_enter(ndp->ni_dvp,ndp->ni_vp,cnp);
3292                                     }
3293                                     if (unlocknewvp)
3294                                         vput(newvp);
3295                                     else
3296                                         vrele(newvp);
3297                                     newvp = NULLVP;
3298                                 }
3299                             }
3300                         } else if (nfhp != NULL) {
3301                             FREE((caddr_t)nfhp, M_NFSFH);
3302                         }
3303                         NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
3304                         more_dirs = fxdr_unsigned(int, *tl);
3305                 }
3306                 /*
3307                  * If at end of rpc data, get the eof boolean
3308                  */
3309                 if (!more_dirs) {
3310                         NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
3311                         eof = fxdr_unsigned(int, *tl);
3312                         if (tryformoredirs)
3313                                 more_dirs = !eof;
3314                         if (nd->nd_flag & ND_NFSV4) {
3315                                 error = nfscl_postop_attr(nd, nap, attrflagp,
3316                                     stuff);
3317                                 if (error)
3318                                         goto nfsmout;
3319                         }
3320                 }
3321                 mbuf_freem(nd->nd_mrep);
3322                 nd->nd_mrep = NULL;
3323         }
3324         /*
3325          * Fill last record, iff any, out to a multiple of DIRBLKSIZ
3326          * by increasing d_reclen for the last record.
3327          */
3328         if (blksiz > 0) {
3329                 left = DIRBLKSIZ - blksiz;
3330                 dp->d_reclen += left;
3331                 uio_iov_base_add(uiop, left);
3332                 uio_iov_len_add(uiop, -(left));
3333                 uio_uio_resid_add(uiop, -(left));
3334                 uiop->uio_offset += left;
3335         }
3336
3337         /*
3338          * If returning no data, assume end of file.
3339          * If not bigenough, return not end of file, since you aren't
3340          *    returning all the data
3341          * Otherwise, return the eof flag from the server.
3342          */
3343         if (eofp != NULL) {
3344                 if (tresid == uio_uio_resid(uiop))
3345                         *eofp = 1;
3346                 else if (!bigenough)
3347                         *eofp = 0;
3348                 else
3349                         *eofp = eof;
3350         }
3351
3352         /*
3353          * Add extra empty records to any remaining DIRBLKSIZ chunks.
3354          */
3355         while (uio_uio_resid(uiop) > 0 && uio_uio_resid(uiop) != tresid) {
3356                 dp = (struct dirent *)uio_iov_base(uiop);
3357                 dp->d_type = DT_UNKNOWN;
3358                 dp->d_fileno = 0;
3359                 dp->d_namlen = 0;
3360                 dp->d_name[0] = '\0';
3361                 tl = (u_int32_t *)&dp->d_name[4];
3362                 *tl++ = cookie.lval[0];
3363                 *tl = cookie.lval[1];
3364                 dp->d_reclen = DIRBLKSIZ;
3365                 uio_iov_base_add(uiop, DIRBLKSIZ);
3366                 uio_iov_len_add(uiop, -(DIRBLKSIZ));
3367                 uio_uio_resid_add(uiop, -(DIRBLKSIZ));
3368                 uiop->uio_offset += DIRBLKSIZ;
3369         }
3370
3371 nfsmout:
3372         if (nd->nd_mrep != NULL)
3373                 mbuf_freem(nd->nd_mrep);
3374         return (error);
3375 }
3376 #endif  /* !APPLE */
3377
3378 /*
3379  * Nfs commit rpc
3380  */
3381 APPLESTATIC int
3382 nfsrpc_commit(vnode_t vp, u_quad_t offset, int cnt, struct ucred *cred,
3383     NFSPROC_T *p, u_char *verfp, struct nfsvattr *nap, int *attrflagp,
3384     void *stuff)
3385 {
3386         u_int32_t *tl;
3387         struct nfsrv_descript nfsd, *nd = &nfsd;
3388         nfsattrbit_t attrbits;
3389         int error;
3390
3391         *attrflagp = 0;
3392         NFSCL_REQSTART(nd, NFSPROC_COMMIT, vp);
3393         NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED);
3394         txdr_hyper(offset, tl);
3395         tl += 2;
3396         *tl = txdr_unsigned(cnt);
3397         if (nd->nd_flag & ND_NFSV4) {
3398                 /*
3399                  * And do a Getattr op.
3400                  */
3401                 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
3402                 *tl = txdr_unsigned(NFSV4OP_GETATTR);
3403                 NFSGETATTR_ATTRBIT(&attrbits);
3404                 (void) nfsrv_putattrbit(nd, &attrbits);
3405         }
3406         error = nfscl_request(nd, vp, p, cred, stuff);
3407         if (error)
3408                 return (error);
3409         error = nfscl_wcc_data(nd, vp, nap, attrflagp, NULL, stuff);
3410         if (!error && !nd->nd_repstat) {
3411                 NFSM_DISSECT(tl, u_int32_t *, NFSX_VERF);
3412                 NFSBCOPY((caddr_t)tl, verfp, NFSX_VERF);
3413                 if (nd->nd_flag & ND_NFSV4)
3414                         error = nfscl_postop_attr(nd, nap, attrflagp, stuff);
3415         }
3416 nfsmout:
3417         if (!error && nd->nd_repstat)
3418                 error = nd->nd_repstat;
3419         mbuf_freem(nd->nd_mrep);
3420         return (error);
3421 }
3422
3423 /*
3424  * NFS byte range lock rpc.
3425  * (Mostly just calls one of the three lower level RPC routines.)
3426  */
3427 APPLESTATIC int
3428 nfsrpc_advlock(vnode_t vp, off_t size, int op, struct flock *fl,
3429     int reclaim, struct ucred *cred, NFSPROC_T *p)
3430 {
3431         struct nfscllockowner *lp;
3432         struct nfsclclient *clp;
3433         struct nfsfh *nfhp;
3434         struct nfsrv_descript nfsd, *nd = &nfsd;
3435         struct nfsmount *nmp = VFSTONFS(vnode_mount(vp));
3436         u_int64_t off, len;
3437         off_t start, end;
3438         u_int32_t clidrev = 0;
3439         int error = 0, newone = 0, expireret = 0, retrycnt, donelocally;
3440         int callcnt, dorpc;
3441
3442         /*
3443          * Convert the flock structure into a start and end and do POSIX
3444          * bounds checking.
3445          */
3446         switch (fl->l_whence) {
3447         case SEEK_SET:
3448         case SEEK_CUR:
3449                 /*
3450                  * Caller is responsible for adding any necessary offset
3451                  * when SEEK_CUR is used.
3452                  */
3453                 start = fl->l_start;
3454                 off = fl->l_start;
3455                 break;
3456         case SEEK_END:
3457                 start = size + fl->l_start;
3458                 off = size + fl->l_start;
3459                 break;
3460         default:
3461                 return (EINVAL);
3462         };
3463         if (start < 0)
3464                 return (EINVAL);
3465         if (fl->l_len != 0) {
3466                 end = start + fl->l_len - 1;
3467                 if (end < start)
3468                         return (EINVAL);
3469         }
3470
3471         len = fl->l_len;
3472         if (len == 0)
3473                 len = NFS64BITSSET;
3474         retrycnt = 0;
3475         do {
3476             nd->nd_repstat = 0;
3477             if (op == F_GETLK) {
3478                 error = nfscl_getcl(vp, cred, p, &clp);
3479                 if (error)
3480                         return (error);
3481                 error = nfscl_lockt(vp, clp, off, len, fl, p);
3482                 if (!error) {
3483                         clidrev = clp->nfsc_clientidrev;
3484                         error = nfsrpc_lockt(nd, vp, clp, off, len, fl, cred,
3485                             p);
3486                 } else if (error == -1) {
3487                         error = 0;
3488                 }
3489                 nfscl_clientrelease(clp);
3490             } else if (op == F_UNLCK && fl->l_type == F_UNLCK) {
3491                 /*
3492                  * We must loop around for all lockowner cases.
3493                  */
3494                 callcnt = 0;
3495                 error = nfscl_getcl(vp, cred, p, &clp);
3496                 if (error)
3497                         return (error);
3498                 do {
3499                     error = nfscl_relbytelock(vp, off, len, cred, p, callcnt,
3500                         clp, &lp, &dorpc);
3501                     /*
3502                      * If it returns a NULL lp, we're done.
3503                      */
3504                     if (lp == NULL) {
3505                         if (callcnt == 0)
3506                             nfscl_clientrelease(clp);
3507                         else
3508                             nfscl_releasealllocks(clp, vp, p);
3509                         return (error);
3510                     }
3511                     if (nmp->nm_clp != NULL)
3512                         clidrev = nmp->nm_clp->nfsc_clientidrev;
3513                     else
3514                         clidrev = 0;
3515                     /*
3516                      * If the server doesn't support Posix lock semantics,
3517                      * only allow locks on the entire file, since it won't
3518                      * handle overlapping byte ranges.
3519                      * There might still be a problem when a lock
3520                      * upgrade/downgrade (read<->write) occurs, since the
3521                      * server "might" expect an unlock first?
3522                      */
3523                     if (dorpc && (lp->nfsl_open->nfso_posixlock ||
3524                         (off == 0 && len == NFS64BITSSET))) {
3525                         /*
3526                          * Since the lock records will go away, we must
3527                          * wait for grace and delay here.
3528                          */
3529                         do {
3530                             error = nfsrpc_locku(nd, nmp, lp, off, len,
3531                                 NFSV4LOCKT_READ, cred, p, 0);
3532                             if ((nd->nd_repstat == NFSERR_GRACE ||
3533                                  nd->nd_repstat == NFSERR_DELAY) &&
3534                                 error == 0)
3535                                 (void) nfs_catnap(PZERO, (int)nd->nd_repstat,
3536                                     "nfs_advlock");
3537                         } while ((nd->nd_repstat == NFSERR_GRACE ||
3538                             nd->nd_repstat == NFSERR_DELAY) && error == 0);
3539                     }
3540                     callcnt++;
3541                 } while (error == 0 && nd->nd_repstat == 0);
3542                 nfscl_releasealllocks(clp, vp, p);
3543             } else if (op == F_SETLK) {
3544                 error = nfscl_getbytelock(vp, off, len, fl->l_type, cred, p,
3545                     NULL, 0, NULL, NULL, &lp, &newone, &donelocally);
3546                 if (error || donelocally) {
3547                         return (error);
3548                 }
3549                 if (nmp->nm_clp != NULL)
3550                         clidrev = nmp->nm_clp->nfsc_clientidrev;
3551                 else
3552                         clidrev = 0;
3553                 nfhp = VTONFS(vp)->n_fhp;
3554                 if (!lp->nfsl_open->nfso_posixlock &&
3555                     (off != 0 || len != NFS64BITSSET)) {
3556                         error = EINVAL;
3557                 } else {
3558                         error = nfsrpc_lock(nd, nmp, vp, nfhp->nfh_fh,
3559                             nfhp->nfh_len, lp, newone, reclaim, off,
3560                             len, fl->l_type, cred, p, 0);
3561                 }
3562                 if (!error)
3563                         error = nd->nd_repstat;
3564                 nfscl_lockrelease(lp, error, newone);
3565             } else {
3566                 error = EINVAL;
3567             }
3568             if (!error)
3569                 error = nd->nd_repstat;
3570             if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID ||
3571                 error == NFSERR_STALEDONTRECOVER ||
3572                 error == NFSERR_STALECLIENTID || error == NFSERR_DELAY) {
3573                 (void) nfs_catnap(PZERO, error, "nfs_advlock");
3574             } else if ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID)
3575                 && clidrev != 0) {
3576                 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p);
3577                 retrycnt++;
3578             }
3579         } while (error == NFSERR_GRACE ||
3580             error == NFSERR_STALECLIENTID || error == NFSERR_DELAY ||
3581             error == NFSERR_STALEDONTRECOVER || error == NFSERR_STALESTATEID ||
3582             ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) &&
3583              expireret == 0 && clidrev != 0 && retrycnt < 4));
3584         if (error && retrycnt >= 4)
3585                 error = EIO;
3586         return (error);
3587 }
3588
3589 /*
3590  * The lower level routine for the LockT case.
3591  */
3592 APPLESTATIC int
3593 nfsrpc_lockt(struct nfsrv_descript *nd, vnode_t vp,
3594     struct nfsclclient *clp, u_int64_t off, u_int64_t len, struct flock *fl,
3595     struct ucred *cred, NFSPROC_T *p)
3596 {
3597         u_int32_t *tl;
3598         int error, type, size;
3599         u_int8_t own[NFSV4CL_LOCKNAMELEN];
3600
3601         NFSCL_REQSTART(nd, NFSPROC_LOCKT, vp);
3602         NFSM_BUILD(tl, u_int32_t *, 7 * NFSX_UNSIGNED);
3603         if (fl->l_type == F_RDLCK)
3604                 *tl++ = txdr_unsigned(NFSV4LOCKT_READ);
3605         else
3606                 *tl++ = txdr_unsigned(NFSV4LOCKT_WRITE);
3607         txdr_hyper(off, tl);
3608         tl += 2;
3609         txdr_hyper(len, tl);
3610         tl += 2;
3611         *tl++ = clp->nfsc_clientid.lval[0];
3612         *tl = clp->nfsc_clientid.lval[1];
3613         nfscl_filllockowner(p, own);
3614         (void) nfsm_strtom(nd, own, NFSV4CL_LOCKNAMELEN);
3615         error = nfscl_request(nd, vp, p, cred, NULL);
3616         if (error)
3617                 return (error);
3618         if (nd->nd_repstat == 0) {
3619                 fl->l_type = F_UNLCK;
3620         } else if (nd->nd_repstat == NFSERR_DENIED) {
3621                 nd->nd_repstat = 0;
3622                 fl->l_whence = SEEK_SET;
3623                 NFSM_DISSECT(tl, u_int32_t *, 8 * NFSX_UNSIGNED);
3624                 fl->l_start = fxdr_hyper(tl);
3625                 tl += 2;
3626                 len = fxdr_hyper(tl);
3627                 tl += 2;
3628                 if (len == NFS64BITSSET)
3629                         fl->l_len = 0;
3630                 else
3631                         fl->l_len = len;
3632                 type = fxdr_unsigned(int, *tl++);
3633                 if (type == NFSV4LOCKT_WRITE)
3634                         fl->l_type = F_WRLCK;
3635                 else
3636                         fl->l_type = F_RDLCK;
3637                 /*
3638                  * XXX For now, I have no idea what to do with the
3639                  * conflicting lock_owner, so I'll just set the pid == 0
3640                  * and skip over the lock_owner.
3641                  */
3642                 fl->l_pid = (pid_t)0;
3643                 tl += 2;
3644                 size = fxdr_unsigned(int, *tl);
3645                 if (size < 0 || size > NFSV4_OPAQUELIMIT)
3646                         error = EBADRPC;
3647                 if (!error)
3648                         error = nfsm_advance(nd, NFSM_RNDUP(size), -1);
3649         } else if (nd->nd_repstat == NFSERR_STALECLIENTID)
3650                 nfscl_initiate_recovery(clp);
3651 nfsmout:
3652         mbuf_freem(nd->nd_mrep);
3653         return (error);
3654 }
3655
3656 /*
3657  * Lower level function that performs the LockU RPC.
3658  */
3659 static int
3660 nfsrpc_locku(struct nfsrv_descript *nd, struct nfsmount *nmp,
3661     struct nfscllockowner *lp, u_int64_t off, u_int64_t len,
3662     u_int32_t type, struct ucred *cred, NFSPROC_T *p, int syscred)
3663 {
3664         u_int32_t *tl;
3665         int error;
3666
3667         nfscl_reqstart(nd, NFSPROC_LOCKU, nmp, lp->nfsl_open->nfso_fh,
3668             lp->nfsl_open->nfso_fhlen, NULL);
3669         NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID + 6 * NFSX_UNSIGNED);
3670         *tl++ = txdr_unsigned(type);
3671         *tl = txdr_unsigned(lp->nfsl_seqid);
3672         if (nfstest_outofseq &&
3673             (arc4random() % nfstest_outofseq) == 0)
3674                 *tl = txdr_unsigned(lp->nfsl_seqid + 1);
3675         tl++;
3676         *tl++ = lp->nfsl_stateid.seqid;
3677         *tl++ = lp->nfsl_stateid.other[0];
3678         *tl++ = lp->nfsl_stateid.other[1];
3679         *tl++ = lp->nfsl_stateid.other[2];
3680         txdr_hyper(off, tl);
3681         tl += 2;
3682         txdr_hyper(len, tl);
3683         if (syscred)
3684                 nd->nd_flag |= ND_USEGSSNAME;
3685         error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred,
3686             NFS_PROG, NFS_VER4, NULL, 1, NULL);
3687         NFSCL_INCRSEQID(lp->nfsl_seqid, nd);
3688         if (error)
3689                 return (error);
3690         if (nd->nd_repstat == 0) {
3691                 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID);
3692                 lp->nfsl_stateid.seqid = *tl++;
3693                 lp->nfsl_stateid.other[0] = *tl++;
3694                 lp->nfsl_stateid.other[1] = *tl++;
3695                 lp->nfsl_stateid.other[2] = *tl;
3696         } else if (nd->nd_repstat == NFSERR_STALESTATEID)
3697                 nfscl_initiate_recovery(lp->nfsl_open->nfso_own->nfsow_clp);
3698 nfsmout:
3699         mbuf_freem(nd->nd_mrep);
3700         return (error);
3701 }
3702
3703 /*
3704  * The actual Lock RPC.
3705  */
3706 APPLESTATIC int
3707 nfsrpc_lock(struct nfsrv_descript *nd, struct nfsmount *nmp, vnode_t vp,
3708     u_int8_t *nfhp, int fhlen, struct nfscllockowner *lp, int newone,
3709     int reclaim, u_int64_t off, u_int64_t len, short type, struct ucred *cred,
3710     NFSPROC_T *p, int syscred)
3711 {
3712         u_int32_t *tl;
3713         int error, size;
3714
3715         nfscl_reqstart(nd, NFSPROC_LOCK, nmp, nfhp, fhlen, NULL);
3716         NFSM_BUILD(tl, u_int32_t *, 7 * NFSX_UNSIGNED);
3717         if (type == F_RDLCK)
3718                 *tl++ = txdr_unsigned(NFSV4LOCKT_READ);
3719         else
3720                 *tl++ = txdr_unsigned(NFSV4LOCKT_WRITE);
3721         *tl++ = txdr_unsigned(reclaim);
3722         txdr_hyper(off, tl);
3723         tl += 2;
3724         txdr_hyper(len, tl);
3725         tl += 2;
3726         if (newone) {
3727             *tl = newnfs_true;
3728             NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID +
3729                 2 * NFSX_UNSIGNED + NFSX_HYPER);
3730             *tl++ = txdr_unsigned(lp->nfsl_open->nfso_own->nfsow_seqid);
3731             *tl++ = lp->nfsl_open->nfso_stateid.seqid;
3732             *tl++ = lp->nfsl_open->nfso_stateid.other[0];
3733             *tl++ = lp->nfsl_open->nfso_stateid.other[1];
3734             *tl++ = lp->nfsl_open->nfso_stateid.other[2];
3735             *tl++ = txdr_unsigned(lp->nfsl_seqid);
3736             *tl++ = lp->nfsl_open->nfso_own->nfsow_clp->nfsc_clientid.lval[0];
3737             *tl = lp->nfsl_open->nfso_own->nfsow_clp->nfsc_clientid.lval[1];
3738             (void) nfsm_strtom(nd, lp->nfsl_owner, NFSV4CL_LOCKNAMELEN);
3739         } else {
3740             *tl = newnfs_false;
3741             NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID + NFSX_UNSIGNED);
3742             *tl++ = lp->nfsl_stateid.seqid;
3743             *tl++ = lp->nfsl_stateid.other[0];
3744             *tl++ = lp->nfsl_stateid.other[1];
3745             *tl++ = lp->nfsl_stateid.other[2];
3746             *tl = txdr_unsigned(lp->nfsl_seqid);
3747             if (nfstest_outofseq &&
3748                 (arc4random() % nfstest_outofseq) == 0)
3749                     *tl = txdr_unsigned(lp->nfsl_seqid + 1);
3750         }
3751         if (syscred)
3752                 nd->nd_flag |= ND_USEGSSNAME;
3753         error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, vp, p, cred,
3754             NFS_PROG, NFS_VER4, NULL, 1, NULL);
3755         if (error)
3756                 return (error);
3757         if (newone)
3758             NFSCL_INCRSEQID(lp->nfsl_open->nfso_own->nfsow_seqid, nd);
3759         NFSCL_INCRSEQID(lp->nfsl_seqid, nd);
3760         if (nd->nd_repstat == 0) {
3761                 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID);
3762                 lp->nfsl_stateid.seqid = *tl++;
3763                 lp->nfsl_stateid.other[0] = *tl++;
3764                 lp->nfsl_stateid.other[1] = *tl++;
3765                 lp->nfsl_stateid.other[2] = *tl;
3766         } else if (nd->nd_repstat == NFSERR_DENIED) {
3767                 NFSM_DISSECT(tl, u_int32_t *, 8 * NFSX_UNSIGNED);
3768                 size = fxdr_unsigned(int, *(tl + 7));
3769                 if (size < 0 || size > NFSV4_OPAQUELIMIT)
3770                         error = EBADRPC;
3771                 if (!error)
3772                         error = nfsm_advance(nd, NFSM_RNDUP(size), -1);
3773         } else if (nd->nd_repstat == NFSERR_STALESTATEID)
3774                 nfscl_initiate_recovery(lp->nfsl_open->nfso_own->nfsow_clp);
3775 nfsmout:
3776         mbuf_freem(nd->nd_mrep);
3777         return (error);
3778 }
3779
3780 /*
3781  * nfs statfs rpc
3782  * (always called with the vp for the mount point)
3783  */
3784 APPLESTATIC int
3785 nfsrpc_statfs(vnode_t vp, struct nfsstatfs *sbp, struct nfsfsinfo *fsp,
3786     struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp,
3787     void *stuff)
3788 {
3789         u_int32_t *tl = NULL;
3790         struct nfsrv_descript nfsd, *nd = &nfsd;
3791         struct nfsmount *nmp;
3792         nfsattrbit_t attrbits;
3793         int error;
3794
3795         *attrflagp = 0;
3796         nmp = VFSTONFS(vnode_mount(vp));
3797         if (NFSHASNFSV4(nmp)) {
3798                 /*
3799                  * For V4, you actually do a getattr.
3800                  */
3801                 NFSCL_REQSTART(nd, NFSPROC_GETATTR, vp);
3802                 NFSSTATFS_GETATTRBIT(&attrbits);
3803                 (void) nfsrv_putattrbit(nd, &attrbits);
3804                 nd->nd_flag |= ND_USEGSSNAME;
3805                 error = nfscl_request(nd, vp, p, cred, stuff);
3806                 if (error)
3807                         return (error);
3808                 if (nd->nd_repstat == 0) {
3809                         error = nfsv4_loadattr(nd, NULL, nap, NULL, NULL, 0,
3810                             NULL, NULL, sbp, fsp, NULL, 0, NULL, NULL, NULL, p,
3811                             cred);
3812                         if (!error) {
3813                                 nmp->nm_fsid[0] = nap->na_filesid[0];
3814                                 nmp->nm_fsid[1] = nap->na_filesid[1];
3815                                 NFSSETHASSETFSID(nmp);
3816                                 *attrflagp = 1;
3817                         }
3818                 } else {
3819                         error = nd->nd_repstat;
3820                 }
3821                 if (error)
3822                         goto nfsmout;
3823         } else {
3824                 NFSCL_REQSTART(nd, NFSPROC_FSSTAT, vp);
3825                 error = nfscl_request(nd, vp, p, cred, stuff);
3826                 if (error)
3827                         return (error);
3828                 if (nd->nd_flag & ND_NFSV3) {
3829                         error = nfscl_postop_attr(nd, nap, attrflagp, stuff);
3830                         if (error)
3831                                 goto nfsmout;
3832                 }
3833                 if (nd->nd_repstat) {
3834                         error = nd->nd_repstat;
3835                         goto nfsmout;
3836                 }
3837                 NFSM_DISSECT(tl, u_int32_t *,
3838                     NFSX_STATFS(nd->nd_flag & ND_NFSV3));
3839         }
3840         if (NFSHASNFSV3(nmp)) {
3841                 sbp->sf_tbytes = fxdr_hyper(tl); tl += 2;
3842                 sbp->sf_fbytes = fxdr_hyper(tl); tl += 2;
3843                 sbp->sf_abytes = fxdr_hyper(tl); tl += 2;
3844                 sbp->sf_tfiles = fxdr_hyper(tl); tl += 2;
3845                 sbp->sf_ffiles = fxdr_hyper(tl); tl += 2;
3846                 sbp->sf_afiles = fxdr_hyper(tl); tl += 2;
3847                 sbp->sf_invarsec = fxdr_unsigned(u_int32_t, *tl);
3848         } else if (NFSHASNFSV4(nmp) == 0) {
3849                 sbp->sf_tsize = fxdr_unsigned(u_int32_t, *tl++);
3850                 sbp->sf_bsize = fxdr_unsigned(u_int32_t, *tl++);
3851                 sbp->sf_blocks = fxdr_unsigned(u_int32_t, *tl++);
3852                 sbp->sf_bfree = fxdr_unsigned(u_int32_t, *tl++);
3853                 sbp->sf_bavail = fxdr_unsigned(u_int32_t, *tl);
3854         }
3855 nfsmout:
3856         mbuf_freem(nd->nd_mrep);
3857         return (error);
3858 }
3859
3860 /*
3861  * nfs pathconf rpc
3862  */
3863 APPLESTATIC int
3864 nfsrpc_pathconf(vnode_t vp, struct nfsv3_pathconf *pc,
3865     struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp,
3866     void *stuff)
3867 {
3868         struct nfsrv_descript nfsd, *nd = &nfsd;
3869         struct nfsmount *nmp;
3870         u_int32_t *tl;
3871         nfsattrbit_t attrbits;
3872         int error;
3873
3874         *attrflagp = 0;
3875         nmp = VFSTONFS(vnode_mount(vp));
3876         if (NFSHASNFSV4(nmp)) {
3877                 /*
3878                  * For V4, you actually do a getattr.
3879                  */
3880                 NFSCL_REQSTART(nd, NFSPROC_GETATTR, vp);
3881                 NFSPATHCONF_GETATTRBIT(&attrbits);
3882                 (void) nfsrv_putattrbit(nd, &attrbits);
3883                 nd->nd_flag |= ND_USEGSSNAME;
3884                 error = nfscl_request(nd, vp, p, cred, stuff);
3885                 if (error)
3886                         return (error);
3887                 if (nd->nd_repstat == 0) {
3888                         error = nfsv4_loadattr(nd, NULL, nap, NULL, NULL, 0,
3889                             pc, NULL, NULL, NULL, NULL, 0, NULL, NULL, NULL, p,
3890                             cred);
3891                         if (!error)
3892                                 *attrflagp = 1;
3893                 } else {
3894                         error = nd->nd_repstat;
3895                 }
3896         } else {
3897                 NFSCL_REQSTART(nd, NFSPROC_PATHCONF, vp);
3898                 error = nfscl_request(nd, vp, p, cred, stuff);
3899                 if (error)
3900                         return (error);
3901                 error = nfscl_postop_attr(nd, nap, attrflagp, stuff);
3902                 if (nd->nd_repstat && !error)
3903                         error = nd->nd_repstat;
3904                 if (!error) {
3905                         NFSM_DISSECT(tl, u_int32_t *, NFSX_V3PATHCONF);
3906                         pc->pc_linkmax = fxdr_unsigned(u_int32_t, *tl++);
3907                         pc->pc_namemax = fxdr_unsigned(u_int32_t, *tl++);
3908                         pc->pc_notrunc = fxdr_unsigned(u_int32_t, *tl++);
3909                         pc->pc_chownrestricted =
3910                             fxdr_unsigned(u_int32_t, *tl++);
3911                         pc->pc_caseinsensitive =
3912                             fxdr_unsigned(u_int32_t, *tl++);
3913                         pc->pc_casepreserving = fxdr_unsigned(u_int32_t, *tl);
3914                 }
3915         }
3916 nfsmout:
3917         mbuf_freem(nd->nd_mrep);
3918         return (error);
3919 }
3920
3921 /*
3922  * nfs version 3 fsinfo rpc call
3923  */
3924 APPLESTATIC int
3925 nfsrpc_fsinfo(vnode_t vp, struct nfsfsinfo *fsp, struct ucred *cred,
3926     NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff)
3927 {
3928         u_int32_t *tl;
3929         struct nfsrv_descript nfsd, *nd = &nfsd;
3930         int error;
3931
3932         *attrflagp = 0;
3933         NFSCL_REQSTART(nd, NFSPROC_FSINFO, vp);
3934         error = nfscl_request(nd, vp, p, cred, stuff);
3935         if (error)
3936                 return (error);
3937         error = nfscl_postop_attr(nd, nap, attrflagp, stuff);
3938         if (nd->nd_repstat && !error)
3939                 error = nd->nd_repstat;
3940         if (!error) {
3941                 NFSM_DISSECT(tl, u_int32_t *, NFSX_V3FSINFO);
3942                 fsp->fs_rtmax = fxdr_unsigned(u_int32_t, *tl++);
3943                 fsp->fs_rtpref = fxdr_unsigned(u_int32_t, *tl++);
3944                 fsp->fs_rtmult = fxdr_unsigned(u_int32_t, *tl++);
3945                 fsp->fs_wtmax = fxdr_unsigned(u_int32_t, *tl++);
3946                 fsp->fs_wtpref = fxdr_unsigned(u_int32_t, *tl++);
3947                 fsp->fs_wtmult = fxdr_unsigned(u_int32_t, *tl++);
3948                 fsp->fs_dtpref = fxdr_unsigned(u_int32_t, *tl++);
3949                 fsp->fs_maxfilesize = fxdr_hyper(tl);
3950                 tl += 2;
3951                 fxdr_nfsv3time(tl, &fsp->fs_timedelta);
3952                 tl += 2;
3953                 fsp->fs_properties = fxdr_unsigned(u_int32_t, *tl);
3954         }
3955 nfsmout:
3956         mbuf_freem(nd->nd_mrep);
3957         return (error);
3958 }
3959
3960 /*
3961  * This function performs the Renew RPC.
3962  */
3963 APPLESTATIC int
3964 nfsrpc_renew(struct nfsclclient *clp, struct ucred *cred, NFSPROC_T *p)
3965 {
3966         u_int32_t *tl;
3967         struct nfsrv_descript nfsd;
3968         struct nfsrv_descript *nd = &nfsd;
3969         struct nfsmount *nmp;
3970         int error;
3971
3972         nmp = clp->nfsc_nmp;
3973         if (nmp == NULL)
3974                 return (0);
3975         nfscl_reqstart(nd, NFSPROC_RENEW, nmp, NULL, 0, NULL);
3976         NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
3977         *tl++ = clp->nfsc_clientid.lval[0];
3978         *tl = clp->nfsc_clientid.lval[1];
3979         nd->nd_flag |= ND_USEGSSNAME;
3980         error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred,
3981                 NFS_PROG, NFS_VER4, NULL, 1, NULL);
3982         if (error)
3983                 return (error);
3984         error = nd->nd_repstat;
3985         mbuf_freem(nd->nd_mrep);
3986         return (error);
3987 }
3988
3989 /*
3990  * This function performs the Releaselockowner RPC.
3991  */
3992 APPLESTATIC int
3993 nfsrpc_rellockown(struct nfsmount *nmp, struct nfscllockowner *lp,
3994     struct ucred *cred, NFSPROC_T *p)
3995 {
3996         struct nfsrv_descript nfsd, *nd = &nfsd;
3997         u_int32_t *tl;
3998         int error;
3999
4000         nfscl_reqstart(nd, NFSPROC_RELEASELCKOWN, nmp, NULL, 0, NULL);
4001         NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
4002         *tl++ = nmp->nm_clp->nfsc_clientid.lval[0];
4003         *tl = nmp->nm_clp->nfsc_clientid.lval[1];
4004         (void) nfsm_strtom(nd, lp->nfsl_owner, NFSV4CL_LOCKNAMELEN);
4005         nd->nd_flag |= ND_USEGSSNAME;
4006         error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred,
4007             NFS_PROG, NFS_VER4, NULL, 1, NULL);
4008         if (error)
4009                 return (error);
4010         error = nd->nd_repstat;
4011         mbuf_freem(nd->nd_mrep);
4012         return (error);
4013 }
4014
4015 /*
4016  * This function performs the Compound to get the mount pt FH.
4017  */
4018 APPLESTATIC int
4019 nfsrpc_getdirpath(struct nfsmount *nmp, u_char *dirpath, struct ucred *cred,
4020     NFSPROC_T *p)
4021 {
4022         u_int32_t *tl;
4023         struct nfsrv_descript nfsd;
4024         struct nfsrv_descript *nd = &nfsd;
4025         u_char *cp, *cp2;
4026         int error, cnt, len, setnil;
4027         u_int32_t *opcntp;
4028
4029         nfscl_reqstart(nd, NFSPROC_PUTROOTFH, nmp, NULL, 0, &opcntp);
4030         cp = dirpath;
4031         cnt = 0;
4032         do {
4033                 setnil = 0;
4034                 while (*cp == '/')
4035                         cp++;
4036                 cp2 = cp;
4037                 while (*cp2 != '\0' && *cp2 != '/')
4038                         cp2++;
4039                 if (*cp2 == '/') {
4040                         setnil = 1;
4041                         *cp2 = '\0';
4042                 }
4043                 if (cp2 != cp) {
4044                         NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
4045                         *tl = txdr_unsigned(NFSV4OP_LOOKUP);
4046                         nfsm_strtom(nd, cp, strlen(cp));
4047                         cnt++;
4048                 }
4049                 if (setnil)
4050                         *cp2++ = '/';
4051                 cp = cp2;
4052         } while (*cp != '\0');
4053         *opcntp = txdr_unsigned(2 + cnt);
4054         NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
4055         *tl = txdr_unsigned(NFSV4OP_GETFH);
4056         nd->nd_flag |= ND_USEGSSNAME;
4057         error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred,
4058                 NFS_PROG, NFS_VER4, NULL, 1, NULL);
4059         if (error)
4060                 return (error);
4061         if (nd->nd_repstat == 0) {
4062                 NFSM_DISSECT(tl, u_int32_t *, (3 + 2 * cnt) * NFSX_UNSIGNED);
4063                 tl += (2 + 2 * cnt);
4064                 if ((len = fxdr_unsigned(int, *tl)) <= 0 ||
4065                         len > NFSX_FHMAX) {
4066                         nd->nd_repstat = NFSERR_BADXDR;
4067                 } else {
4068                         nd->nd_repstat = nfsrv_mtostr(nd, nmp->nm_fh, len);
4069                         if (nd->nd_repstat == 0)
4070                                 nmp->nm_fhsize = len;
4071                 }
4072         }
4073         error = nd->nd_repstat;
4074 nfsmout:
4075         mbuf_freem(nd->nd_mrep);
4076         return (error);
4077 }
4078
4079 /*
4080  * This function performs the Delegreturn RPC.
4081  */
4082 APPLESTATIC int
4083 nfsrpc_delegreturn(struct nfscldeleg *dp, struct ucred *cred,
4084     struct nfsmount *nmp, NFSPROC_T *p, int syscred)
4085 {
4086         u_int32_t *tl;
4087         struct nfsrv_descript nfsd;
4088         struct nfsrv_descript *nd = &nfsd;
4089         int error;
4090
4091         nfscl_reqstart(nd, NFSPROC_DELEGRETURN, nmp, dp->nfsdl_fh,
4092             dp->nfsdl_fhlen, NULL);
4093         NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID);
4094         *tl++ = dp->nfsdl_stateid.seqid;
4095         *tl++ = dp->nfsdl_stateid.other[0];
4096         *tl++ = dp->nfsdl_stateid.other[1];
4097         *tl = dp->nfsdl_stateid.other[2];
4098         if (syscred)
4099                 nd->nd_flag |= ND_USEGSSNAME;
4100         error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred,
4101             NFS_PROG, NFS_VER4, NULL, 1, NULL);
4102         if (error)
4103                 return (error);
4104         error = nd->nd_repstat;
4105         mbuf_freem(nd->nd_mrep);
4106         return (error);
4107 }
4108
4109 #ifdef NFS4_ACL_EXTATTR_NAME
4110 /*
4111  * nfs getacl call.
4112  */
4113 APPLESTATIC int
4114 nfsrpc_getacl(vnode_t vp, struct ucred *cred, NFSPROC_T *p,
4115     struct acl *aclp, void *stuff)
4116 {
4117         struct nfsrv_descript nfsd, *nd = &nfsd;
4118         int error;
4119         nfsattrbit_t attrbits;
4120         struct nfsmount *nmp = VFSTONFS(vnode_mount(vp));
4121
4122         if (nfsrv_useacl == 0 || !NFSHASNFSV4(nmp))
4123                 return (EOPNOTSUPP);
4124         NFSCL_REQSTART(nd, NFSPROC_GETACL, vp);
4125         NFSZERO_ATTRBIT(&attrbits);
4126         NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_ACL);
4127         (void) nfsrv_putattrbit(nd, &attrbits);
4128         error = nfscl_request(nd, vp, p, cred, stuff);
4129         if (error)
4130                 return (error);
4131         if (!nd->nd_repstat)
4132                 error = nfsv4_loadattr(nd, vp, NULL, NULL, NULL, 0, NULL,
4133                     NULL, NULL, NULL, aclp, 0, NULL, NULL, NULL, p, cred);
4134         else
4135                 error = nd->nd_repstat;
4136         mbuf_freem(nd->nd_mrep);
4137         return (error);
4138 }
4139
4140 /*
4141  * nfs setacl call.
4142  */
4143 APPLESTATIC int
4144 nfsrpc_setacl(vnode_t vp, struct ucred *cred, NFSPROC_T *p,
4145     struct acl *aclp, void *stuff)
4146 {
4147         int error;
4148         struct nfsmount *nmp = VFSTONFS(vnode_mount(vp));
4149
4150         if (nfsrv_useacl == 0 || !NFSHASNFSV4(nmp))
4151                 return (EOPNOTSUPP);
4152         error = nfsrpc_setattr(vp, NULL, aclp, cred, p, NULL, NULL, stuff);
4153         return (error);
4154 }
4155
4156 /*
4157  * nfs setacl call.
4158  */
4159 static int
4160 nfsrpc_setaclrpc(vnode_t vp, struct ucred *cred, NFSPROC_T *p,
4161     struct acl *aclp, nfsv4stateid_t *stateidp, void *stuff)
4162 {
4163         struct nfsrv_descript nfsd, *nd = &nfsd;
4164         int error;
4165         nfsattrbit_t attrbits;
4166         struct nfsmount *nmp = VFSTONFS(vnode_mount(vp));
4167
4168         if (!NFSHASNFSV4(nmp))
4169                 return (EOPNOTSUPP);
4170         NFSCL_REQSTART(nd, NFSPROC_SETACL, vp);
4171         nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID);
4172         NFSZERO_ATTRBIT(&attrbits);
4173         NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_ACL);
4174         (void) nfsv4_fillattr(nd, vp, aclp, NULL, NULL, 0, &attrbits,
4175             NULL, NULL, 0, 0);
4176         error = nfscl_request(nd, vp, p, cred, stuff);
4177         if (error)
4178                 return (error);
4179         /* Don't care about the pre/postop attributes */
4180         mbuf_freem(nd->nd_mrep);
4181         return (nd->nd_repstat);
4182 }
4183
4184 #endif  /* NFS4_ACL_EXTATTR_NAME */