sys/fs/nfsclient/nfs_clrpcops.c

   1 /*-
   2  * SPDX-License-Identifier: BSD-3-Clause
   3  *
   4  * Copyright (c) 1989, 1993
   5  *      The Regents of the University of California.  All rights reserved.
   6  *
   7  * This code is derived from software contributed to Berkeley by
   8  * Rick Macklem at The University of Guelph.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  * 3. Neither the name of the University nor the names of its contributors
  19  *    may be used to endorse or promote products derived from this software
  20  *    without specific prior written permission.
  21  *
  22  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  23  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  24  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  25  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  26  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  27  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  28  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  29  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  30  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  31  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  32  * SUCH DAMAGE.
  33  *
  34  */
  35
  36 #include <sys/cdefs.h>
  37 __FBSDID("$FreeBSD$");
  38
  39 /*
  40  * Rpc op calls, generally called from the vnode op calls or through the
  41  * buffer cache, for NFS v2, 3 and 4.
  42  * These do not normally make any changes to vnode arguments or use
  43  * structures that might change between the VFS variants. The returned
  44  * arguments are all at the end, after the NFSPROC_T *p one.
  45  */
  46
  47 #ifndef APPLEKEXT
  48 #include "opt_inet6.h"
  49
  50 #include <fs/nfs/nfsport.h>
  51 #include <sys/sysctl.h>
  52 #include <sys/taskqueue.h>
  53
  54 SYSCTL_DECL(_vfs_nfs);
  55
  56 static int      nfsignore_eexist = 0;
  57 SYSCTL_INT(_vfs_nfs, OID_AUTO, ignore_eexist, CTLFLAG_RW,
  58     &nfsignore_eexist, 0, "NFS ignore EEXIST replies for mkdir/symlink");
  59
  60 static int      nfscl_dssameconn = 0;
  61 SYSCTL_INT(_vfs_nfs, OID_AUTO, dssameconn, CTLFLAG_RW,
  62     &nfscl_dssameconn, 0, "Use same TCP connection to multiple DSs");
  63
  64 /*
  65  * Global variables
  66  */
  67 extern int nfs_numnfscbd;
  68 extern struct timeval nfsboottime;
  69 extern u_int32_t newnfs_false, newnfs_true;
  70 extern nfstype nfsv34_type[9];
  71 extern int nfsrv_useacl;
  72 extern char nfsv4_callbackaddr[INET6_ADDRSTRLEN];
  73 extern int nfscl_debuglevel;
  74 extern int nfs_pnfsiothreads;
  75 NFSCLSTATEMUTEX;
  76 int nfstest_outofseq = 0;
  77 int nfscl_assumeposixlocks = 1;
  78 int nfscl_enablecallb = 0;
  79 short nfsv4_cbport = NFSV4_CBPORT;
  80 int nfstest_openallsetattr = 0;
  81 #endif  /* !APPLEKEXT */
  82
  83 #define DIRHDSIZ        offsetof(struct dirent, d_name)
  84
  85 /*
  86  * nfscl_getsameserver() can return one of three values:
  87  * NFSDSP_USETHISSESSION - Use this session for the DS.
  88  * NFSDSP_SEQTHISSESSION - Use the nfsclds_sequence field of this dsp for new
  89  *     session.
  90  * NFSDSP_NOTFOUND - No matching server was found.
  91  */
  92 enum nfsclds_state {
  93         NFSDSP_USETHISSESSION = 0,
  94         NFSDSP_SEQTHISSESSION = 1,
  95         NFSDSP_NOTFOUND = 2,
  96 };
  97
  98 /*
  99  * Do a write RPC on a DS data file, using this structure for the arguments,
 100  * so that this function can be executed by a separate kernel process.
 101  */
 102 struct nfsclwritedsdorpc {
 103         int                     done;
 104         int                     inprog;
 105         struct task             tsk;
 106         struct vnode            *vp;
 107         int                     iomode;
 108         int                     must_commit;
 109         nfsv4stateid_t          *stateidp;
 110         struct nfsclds          *dsp;
 111         uint64_t                off;
 112         int                     len;
 113         struct nfsfh            *fhp;
 114         struct mbuf             *m;
 115         int                     vers;
 116         int                     minorvers;
 117         struct ucred            *cred;
 118         NFSPROC_T               *p;
 119         int                     err;
 120 };
 121
 122 static int nfsrpc_setattrrpc(vnode_t , struct vattr *, nfsv4stateid_t *,
 123     struct ucred *, NFSPROC_T *, struct nfsvattr *, int *, void *);
 124 static int nfsrpc_readrpc(vnode_t , struct uio *, struct ucred *,
 125     nfsv4stateid_t *, NFSPROC_T *, struct nfsvattr *, int *, void *);
 126 static int nfsrpc_writerpc(vnode_t , struct uio *, int *, int *,
 127     struct ucred *, nfsv4stateid_t *, NFSPROC_T *, struct nfsvattr *, int *,
 128     void *);
 129 static int nfsrpc_createv23(vnode_t , char *, int, struct vattr *,
 130     nfsquad_t, int, struct ucred *, NFSPROC_T *, struct nfsvattr *,
 131     struct nfsvattr *, struct nfsfh **, int *, int *, void *);
 132 static int nfsrpc_createv4(vnode_t , char *, int, struct vattr *,
 133     nfsquad_t, int, struct nfsclowner *, struct nfscldeleg **, struct ucred *,
 134     NFSPROC_T *, struct nfsvattr *, struct nfsvattr *, struct nfsfh **, int *,
 135     int *, void *, int *);
 136 static int nfsrpc_locku(struct nfsrv_descript *, struct nfsmount *,
 137     struct nfscllockowner *, u_int64_t, u_int64_t,
 138     u_int32_t, struct ucred *, NFSPROC_T *, int);
 139 static int nfsrpc_setaclrpc(vnode_t, struct ucred *, NFSPROC_T *,
 140     struct acl *, nfsv4stateid_t *, void *);
 141 static int nfsrpc_getlayout(struct nfsmount *, vnode_t, struct nfsfh *, int,
 142     uint32_t *, nfsv4stateid_t *, uint64_t, struct nfscllayout **,
 143     struct ucred *, NFSPROC_T *);
 144 static int nfsrpc_fillsa(struct nfsmount *, struct sockaddr_in *,
 145     struct sockaddr_in6 *, sa_family_t, int, struct nfsclds **, NFSPROC_T *);
 146 static void nfscl_initsessionslots(struct nfsclsession *);
 147 static int nfscl_doflayoutio(vnode_t, struct uio *, int *, int *, int *,
 148     nfsv4stateid_t *, int, struct nfscldevinfo *, struct nfscllayout *,
 149     struct nfsclflayout *, uint64_t, uint64_t, int, struct ucred *,
 150     NFSPROC_T *);
 151 static int nfscl_dofflayoutio(vnode_t, struct uio *, int *, int *, int *,
 152     nfsv4stateid_t *, int, struct nfscldevinfo *, struct nfscllayout *,
 153     struct nfsclflayout *, uint64_t, uint64_t, int, int, struct mbuf *,
 154     struct nfsclwritedsdorpc *, struct ucred *, NFSPROC_T *);
 155 static struct mbuf *nfsm_copym(struct mbuf *, int, int);
 156 static int nfsrpc_readds(vnode_t, struct uio *, nfsv4stateid_t *, int *,
 157     struct nfsclds *, uint64_t, int, struct nfsfh *, int, int, int,
 158     struct ucred *, NFSPROC_T *);
 159 static int nfsrpc_writeds(vnode_t, struct uio *, int *, int *,
 160     nfsv4stateid_t *, struct nfsclds *, uint64_t, int,
 161     struct nfsfh *, int, int, int, int, struct ucred *, NFSPROC_T *);
 162 static int nfsio_writedsmir(vnode_t, int *, int *, nfsv4stateid_t *,
 163     struct nfsclds *, uint64_t, int, struct nfsfh *, struct mbuf *, int, int,
 164     struct nfsclwritedsdorpc *, struct ucred *, NFSPROC_T *);
 165 static int nfsrpc_writedsmir(vnode_t, int *, int *, nfsv4stateid_t *,
 166     struct nfsclds *, uint64_t, int, struct nfsfh *, struct mbuf *, int, int,
 167     struct ucred *, NFSPROC_T *);
 168 static enum nfsclds_state nfscl_getsameserver(struct nfsmount *,
 169     struct nfsclds *, struct nfsclds **, uint32_t *);
 170 static int nfsio_commitds(vnode_t, uint64_t, int, struct nfsclds *,
 171     struct nfsfh *, int, int, struct nfsclwritedsdorpc *, struct ucred *,
 172     NFSPROC_T *);
 173 static int nfsrpc_commitds(vnode_t, uint64_t, int, struct nfsclds *,
 174     struct nfsfh *, int, int, struct ucred *, NFSPROC_T *);
 175 static void nfsrv_setuplayoutget(struct nfsrv_descript *, int, uint64_t,
 176     uint64_t, uint64_t, nfsv4stateid_t *, int, int, int);
 177 static int nfsrv_parseug(struct nfsrv_descript *, int, uid_t *, gid_t *,
 178     NFSPROC_T *);
 179 static int nfsrv_parselayoutget(struct nfsrv_descript *, nfsv4stateid_t *,
 180     int *, struct nfsclflayouthead *);
 181 static int nfsrpc_getopenlayout(struct nfsmount *, vnode_t, u_int8_t *,
 182     int, uint8_t *, int, uint32_t, struct nfsclopen *, uint8_t *, int,
 183     struct nfscldeleg **, struct ucred *, NFSPROC_T *);
 184 static int nfsrpc_getcreatelayout(vnode_t, char *, int, struct vattr *,
 185     nfsquad_t, int, struct nfsclowner *, struct nfscldeleg **,
 186     struct ucred *, NFSPROC_T *, struct nfsvattr *, struct nfsvattr *,
 187     struct nfsfh **, int *, int *, void *, int *);
 188 static int nfsrpc_openlayoutrpc(struct nfsmount *, vnode_t, u_int8_t *,
 189     int, uint8_t *, int, uint32_t, struct nfsclopen *, uint8_t *, int,
 190     struct nfscldeleg **, nfsv4stateid_t *, int, int, int, int *,
 191     struct nfsclflayouthead *, int *, struct ucred *, NFSPROC_T *);
 192 static int nfsrpc_createlayout(vnode_t, char *, int, struct vattr *,
 193     nfsquad_t, int, struct nfsclowner *, struct nfscldeleg **,
 194     struct ucred *, NFSPROC_T *, struct nfsvattr *, struct nfsvattr *,
 195     struct nfsfh **, int *, int *, void *, int *, nfsv4stateid_t *,
 196     int, int, int, int *, struct nfsclflayouthead *, int *);
 197 static int nfsrpc_layoutget(struct nfsmount *, uint8_t *, int, int, uint64_t,
 198     uint64_t, uint64_t, int, int, nfsv4stateid_t *, int *,
 199     struct nfsclflayouthead *, struct ucred *, NFSPROC_T *, void *);
 200 static int nfsrpc_layoutgetres(struct nfsmount *, vnode_t, uint8_t *,
 201     int, nfsv4stateid_t *, int, uint32_t *, struct nfscllayout **,
 202     struct nfsclflayouthead *, int, int, int *, struct ucred *, NFSPROC_T *);
 203
 204 int nfs_pnfsio(task_fn_t *, void *);
 205
 206 /*
 207  * nfs null call from vfs.
 208  */
 209 APPLESTATIC int
 210 nfsrpc_null(vnode_t vp, struct ucred *cred, NFSPROC_T *p)
 211 {
 212         int error;
 213         struct nfsrv_descript nfsd, *nd = &nfsd;
 214
 215         NFSCL_REQSTART(nd, NFSPROC_NULL, vp);
 216         error = nfscl_request(nd, vp, p, cred, NULL);
 217         if (nd->nd_repstat && !error)
 218                 error = nd->nd_repstat;
 219         mbuf_freem(nd->nd_mrep);
 220         return (error);
 221 }
 222
 223 /*
 224  * nfs access rpc op.
 225  * For nfs version 3 and 4, use the access rpc to check accessibility. If file
 226  * modes are changed on the server, accesses might still fail later.
 227  */
 228 APPLESTATIC int
 229 nfsrpc_access(vnode_t vp, int acmode, struct ucred *cred,
 230     NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp)
 231 {
 232         int error;
 233         u_int32_t mode, rmode;
 234
 235         if (acmode & VREAD)
 236                 mode = NFSACCESS_READ;
 237         else
 238                 mode = 0;
 239         if (vnode_vtype(vp) == VDIR) {
 240                 if (acmode & VWRITE)
 241                         mode |= (NFSACCESS_MODIFY | NFSACCESS_EXTEND |
 242                                  NFSACCESS_DELETE);
 243                 if (acmode & VEXEC)
 244                         mode |= NFSACCESS_LOOKUP;
 245         } else {
 246                 if (acmode & VWRITE)
 247                         mode |= (NFSACCESS_MODIFY | NFSACCESS_EXTEND);
 248                 if (acmode & VEXEC)
 249                         mode |= NFSACCESS_EXECUTE;
 250         }
 251
 252         /*
 253          * Now, just call nfsrpc_accessrpc() to do the actual RPC.
 254          */
 255         error = nfsrpc_accessrpc(vp, mode, cred, p, nap, attrflagp, &rmode,
 256             NULL);
 257
 258         /*
 259          * The NFS V3 spec does not clarify whether or not
 260          * the returned access bits can be a superset of
 261          * the ones requested, so...
 262          */
 263         if (!error && (rmode & mode) != mode)
 264                 error = EACCES;
 265         return (error);
 266 }
 267
 268 /*
 269  * The actual rpc, separated out for Darwin.
 270  */
 271 APPLESTATIC int
 272 nfsrpc_accessrpc(vnode_t vp, u_int32_t mode, struct ucred *cred,
 273     NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, u_int32_t *rmodep,
 274     void *stuff)
 275 {
 276         u_int32_t *tl;
 277         u_int32_t supported, rmode;
 278         int error;
 279         struct nfsrv_descript nfsd, *nd = &nfsd;
 280         nfsattrbit_t attrbits;
 281
 282         *attrflagp = 0;
 283         supported = mode;
 284         NFSCL_REQSTART(nd, NFSPROC_ACCESS, vp);
 285         NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
 286         *tl = txdr_unsigned(mode);
 287         if (nd->nd_flag & ND_NFSV4) {
 288                 /*
 289                  * And do a Getattr op.
 290                  */
 291                 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
 292                 *tl = txdr_unsigned(NFSV4OP_GETATTR);
 293                 NFSGETATTR_ATTRBIT(&attrbits);
 294                 (void) nfsrv_putattrbit(nd, &attrbits);
 295         }
 296         error = nfscl_request(nd, vp, p, cred, stuff);
 297         if (error)
 298                 return (error);
 299         if (nd->nd_flag & ND_NFSV3) {
 300                 error = nfscl_postop_attr(nd, nap, attrflagp, stuff);
 301                 if (error)
 302                         goto nfsmout;
 303         }
 304         if (!nd->nd_repstat) {
 305                 if (nd->nd_flag & ND_NFSV4) {
 306                         NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
 307                         supported = fxdr_unsigned(u_int32_t, *tl++);
 308                 } else {
 309                         NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
 310                 }
 311                 rmode = fxdr_unsigned(u_int32_t, *tl);
 312                 if (nd->nd_flag & ND_NFSV4)
 313                         error = nfscl_postop_attr(nd, nap, attrflagp, stuff);
 314
 315                 /*
 316                  * It's not obvious what should be done about
 317                  * unsupported access modes. For now, be paranoid
 318                  * and clear the unsupported ones.
 319                  */
 320                 rmode &= supported;
 321                 *rmodep = rmode;
 322         } else
 323                 error = nd->nd_repstat;
 324 nfsmout:
 325         mbuf_freem(nd->nd_mrep);
 326         return (error);
 327 }
 328
 329 /*
 330  * nfs open rpc
 331  */
 332 APPLESTATIC int
 333 nfsrpc_open(vnode_t vp, int amode, struct ucred *cred, NFSPROC_T *p)
 334 {
 335         struct nfsclopen *op;
 336         struct nfscldeleg *dp;
 337         struct nfsfh *nfhp;
 338         struct nfsnode *np = VTONFS(vp);
 339         struct nfsmount *nmp = VFSTONFS(vnode_mount(vp));
 340         u_int32_t mode, clidrev;
 341         int ret, newone, error, expireret = 0, retrycnt;
 342
 343         /*
 344          * For NFSv4, Open Ops are only done on Regular Files.
 345          */
 346         if (vnode_vtype(vp) != VREG)
 347                 return (0);
 348         mode = 0;
 349         if (amode & FREAD)
 350                 mode |= NFSV4OPEN_ACCESSREAD;
 351         if (amode & FWRITE)
 352                 mode |= NFSV4OPEN_ACCESSWRITE;
 353         nfhp = np->n_fhp;
 354
 355         retrycnt = 0;
 356 #ifdef notdef
 357 { char name[100]; int namel;
 358 namel = (np->n_v4->n4_namelen < 100) ? np->n_v4->n4_namelen : 99;
 359 bcopy(NFS4NODENAME(np->n_v4), name, namel);
 360 name[namel] = '\0';
 361 printf("rpcopen p=0x%x name=%s",p->p_pid,name);
 362 if (nfhp->nfh_len > 0) printf(" fh=0x%x\n",nfhp->nfh_fh[12]);
 363 else printf(" fhl=0\n");
 364 }
 365 #endif
 366         do {
 367             dp = NULL;
 368             error = nfscl_open(vp, nfhp->nfh_fh, nfhp->nfh_len, mode, 1,
 369                 cred, p, NULL, &op, &newone, &ret, 1);
 370             if (error) {
 371                 return (error);
 372             }
 373             if (nmp->nm_clp != NULL)
 374                 clidrev = nmp->nm_clp->nfsc_clientidrev;
 375             else
 376                 clidrev = 0;
 377             if (ret == NFSCLOPEN_DOOPEN) {
 378                 if (np->n_v4 != NULL) {
 379                         /*
 380                          * For the first attempt, try and get a layout, if
 381                          * pNFS is enabled for the mount.
 382                          */
 383                         if (!NFSHASPNFS(nmp) || nfscl_enablecallb == 0 ||
 384                             nfs_numnfscbd == 0 ||
 385                             (np->n_flag & NNOLAYOUT) != 0 || retrycnt > 0)
 386                                 error = nfsrpc_openrpc(nmp, vp,
 387                                     np->n_v4->n4_data,
 388                                     np->n_v4->n4_fhlen, np->n_fhp->nfh_fh,
 389                                     np->n_fhp->nfh_len, mode, op,
 390                                     NFS4NODENAME(np->n_v4),
 391                                     np->n_v4->n4_namelen,
 392                                     &dp, 0, 0x0, cred, p, 0, 0);
 393                         else
 394                                 error = nfsrpc_getopenlayout(nmp, vp,
 395                                     np->n_v4->n4_data,
 396                                     np->n_v4->n4_fhlen, np->n_fhp->nfh_fh,
 397                                     np->n_fhp->nfh_len, mode, op,
 398                                     NFS4NODENAME(np->n_v4),
 399                                     np->n_v4->n4_namelen, &dp, cred, p);
 400                         if (dp != NULL) {
 401 #ifdef APPLE
 402                                 OSBitAndAtomic((int32_t)~NDELEGMOD, (UInt32 *)&np->n_flag);
 403 #else
 404                                 NFSLOCKNODE(np);
 405                                 np->n_flag &= ~NDELEGMOD;
 406                                 /*
 407                                  * Invalidate the attribute cache, so that
 408                                  * attributes that pre-date the issue of a
 409                                  * delegation are not cached, since the
 410                                  * cached attributes will remain valid while
 411                                  * the delegation is held.
 412                                  */
 413                                 NFSINVALATTRCACHE(np);
 414                                 NFSUNLOCKNODE(np);
 415 #endif
 416                                 (void) nfscl_deleg(nmp->nm_mountp,
 417                                     op->nfso_own->nfsow_clp,
 418                                     nfhp->nfh_fh, nfhp->nfh_len, cred, p, &dp);
 419                         }
 420                 } else {
 421                         error = EIO;
 422                 }
 423                 newnfs_copyincred(cred, &op->nfso_cred);
 424             } else if (ret == NFSCLOPEN_SETCRED)
 425                 /*
 426                  * This is a new local open on a delegation. It needs
 427                  * to have credentials so that an open can be done
 428                  * against the server during recovery.
 429                  */
 430                 newnfs_copyincred(cred, &op->nfso_cred);
 431
 432             /*
 433              * nfso_opencnt is the count of how many VOP_OPEN()s have
 434              * been done on this Open successfully and a VOP_CLOSE()
 435              * is expected for each of these.
 436              * If error is non-zero, don't increment it, since the Open
 437              * hasn't succeeded yet.
 438              */
 439             if (!error)
 440                 op->nfso_opencnt++;
 441             nfscl_openrelease(nmp, op, error, newone);
 442             if (error == NFSERR_GRACE || error == NFSERR_STALECLIENTID ||
 443                 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY ||
 444                 error == NFSERR_BADSESSION) {
 445                 (void) nfs_catnap(PZERO, error, "nfs_open");
 446             } else if ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID)
 447                 && clidrev != 0) {
 448                 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p);
 449                 retrycnt++;
 450             }
 451         } while (error == NFSERR_GRACE || error == NFSERR_STALECLIENTID ||
 452             error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY ||
 453             error == NFSERR_BADSESSION ||
 454             ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) &&
 455              expireret == 0 && clidrev != 0 && retrycnt < 4));
 456         if (error && retrycnt >= 4)
 457                 error = EIO;
 458         return (error);
 459 }
 460
 461 /*
 462  * the actual open rpc
 463  */
 464 APPLESTATIC int
 465 nfsrpc_openrpc(struct nfsmount *nmp, vnode_t vp, u_int8_t *nfhp, int fhlen,
 466     u_int8_t *newfhp, int newfhlen, u_int32_t mode, struct nfsclopen *op,
 467     u_int8_t *name, int namelen, struct nfscldeleg **dpp,
 468     int reclaim, u_int32_t delegtype, struct ucred *cred, NFSPROC_T *p,
 469     int syscred, int recursed)
 470 {
 471         u_int32_t *tl;
 472         struct nfsrv_descript nfsd, *nd = &nfsd;
 473         struct nfscldeleg *dp, *ndp = NULL;
 474         struct nfsvattr nfsva;
 475         u_int32_t rflags, deleg;
 476         nfsattrbit_t attrbits;
 477         int error, ret, acesize, limitby;
 478         struct nfsclsession *tsep;
 479
 480         dp = *dpp;
 481         *dpp = NULL;
 482         nfscl_reqstart(nd, NFSPROC_OPEN, nmp, nfhp, fhlen, NULL, NULL, 0, 0);
 483         NFSM_BUILD(tl, u_int32_t *, 5 * NFSX_UNSIGNED);
 484         *tl++ = txdr_unsigned(op->nfso_own->nfsow_seqid);
 485         *tl++ = txdr_unsigned(mode & NFSV4OPEN_ACCESSBOTH);
 486         *tl++ = txdr_unsigned((mode >> NFSLCK_SHIFT) & NFSV4OPEN_DENYBOTH);
 487         tsep = nfsmnt_mdssession(nmp);
 488         *tl++ = tsep->nfsess_clientid.lval[0];
 489         *tl = tsep->nfsess_clientid.lval[1];
 490         (void) nfsm_strtom(nd, op->nfso_own->nfsow_owner, NFSV4CL_LOCKNAMELEN);
 491         NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
 492         *tl++ = txdr_unsigned(NFSV4OPEN_NOCREATE);
 493         if (reclaim) {
 494                 *tl = txdr_unsigned(NFSV4OPEN_CLAIMPREVIOUS);
 495                 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
 496                 *tl = txdr_unsigned(delegtype);
 497         } else {
 498                 if (dp != NULL) {
 499                         *tl = txdr_unsigned(NFSV4OPEN_CLAIMDELEGATECUR);
 500                         NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID);
 501                         if (NFSHASNFSV4N(nmp))
 502                                 *tl++ = 0;
 503                         else
 504                                 *tl++ = dp->nfsdl_stateid.seqid;
 505                         *tl++ = dp->nfsdl_stateid.other[0];
 506                         *tl++ = dp->nfsdl_stateid.other[1];
 507                         *tl = dp->nfsdl_stateid.other[2];
 508                 } else {
 509                         *tl = txdr_unsigned(NFSV4OPEN_CLAIMNULL);
 510                 }
 511                 (void) nfsm_strtom(nd, name, namelen);
 512         }
 513         NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
 514         *tl = txdr_unsigned(NFSV4OP_GETATTR);
 515         NFSZERO_ATTRBIT(&attrbits);
 516         NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_CHANGE);
 517         NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_TIMEMODIFY);
 518         (void) nfsrv_putattrbit(nd, &attrbits);
 519         if (syscred)
 520                 nd->nd_flag |= ND_USEGSSNAME;
 521         error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, vp, p, cred,
 522             NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL);
 523         if (error)
 524                 return (error);
 525         NFSCL_INCRSEQID(op->nfso_own->nfsow_seqid, nd);
 526         if (!nd->nd_repstat) {
 527                 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID +
 528                     6 * NFSX_UNSIGNED);
 529                 op->nfso_stateid.seqid = *tl++;
 530                 op->nfso_stateid.other[0] = *tl++;
 531                 op->nfso_stateid.other[1] = *tl++;
 532                 op->nfso_stateid.other[2] = *tl;
 533                 rflags = fxdr_unsigned(u_int32_t, *(tl + 6));
 534                 error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL);
 535                 if (error)
 536                         goto nfsmout;
 537                 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
 538                 deleg = fxdr_unsigned(u_int32_t, *tl);
 539                 if (deleg == NFSV4OPEN_DELEGATEREAD ||
 540                     deleg == NFSV4OPEN_DELEGATEWRITE) {
 541                         if (!(op->nfso_own->nfsow_clp->nfsc_flags &
 542                               NFSCLFLAGS_FIRSTDELEG))
 543                                 op->nfso_own->nfsow_clp->nfsc_flags |=
 544                                   (NFSCLFLAGS_FIRSTDELEG | NFSCLFLAGS_GOTDELEG);
 545                         ndp = malloc(
 546                             sizeof (struct nfscldeleg) + newfhlen,
 547                             M_NFSCLDELEG, M_WAITOK);
 548                         LIST_INIT(&ndp->nfsdl_owner);
 549                         LIST_INIT(&ndp->nfsdl_lock);
 550                         ndp->nfsdl_clp = op->nfso_own->nfsow_clp;
 551                         ndp->nfsdl_fhlen = newfhlen;
 552                         NFSBCOPY(newfhp, ndp->nfsdl_fh, newfhlen);
 553                         newnfs_copyincred(cred, &ndp->nfsdl_cred);
 554                         nfscl_lockinit(&ndp->nfsdl_rwlock);
 555                         NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID +
 556                             NFSX_UNSIGNED);
 557                         ndp->nfsdl_stateid.seqid = *tl++;
 558                         ndp->nfsdl_stateid.other[0] = *tl++;
 559                         ndp->nfsdl_stateid.other[1] = *tl++;
 560                         ndp->nfsdl_stateid.other[2] = *tl++;
 561                         ret = fxdr_unsigned(int, *tl);
 562                         if (deleg == NFSV4OPEN_DELEGATEWRITE) {
 563                                 ndp->nfsdl_flags = NFSCLDL_WRITE;
 564                                 /*
 565                                  * Indicates how much the file can grow.
 566                                  */
 567                                 NFSM_DISSECT(tl, u_int32_t *,
 568                                     3 * NFSX_UNSIGNED);
 569                                 limitby = fxdr_unsigned(int, *tl++);
 570                                 switch (limitby) {
 571                                 case NFSV4OPEN_LIMITSIZE:
 572                                         ndp->nfsdl_sizelimit = fxdr_hyper(tl);
 573                                         break;
 574                                 case NFSV4OPEN_LIMITBLOCKS:
 575                                         ndp->nfsdl_sizelimit =
 576                                             fxdr_unsigned(u_int64_t, *tl++);
 577                                         ndp->nfsdl_sizelimit *=
 578                                             fxdr_unsigned(u_int64_t, *tl);
 579                                         break;
 580                                 default:
 581                                         error = NFSERR_BADXDR;
 582                                         goto nfsmout;
 583                                 }
 584                         } else {
 585                                 ndp->nfsdl_flags = NFSCLDL_READ;
 586                         }
 587                         if (ret)
 588                                 ndp->nfsdl_flags |= NFSCLDL_RECALL;
 589                         error = nfsrv_dissectace(nd, &ndp->nfsdl_ace, &ret,
 590                             &acesize, p);
 591                         if (error)
 592                                 goto nfsmout;
 593                 } else if (deleg != NFSV4OPEN_DELEGATENONE) {
 594                         error = NFSERR_BADXDR;
 595                         goto nfsmout;
 596                 }
 597                 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
 598                 error = nfsv4_loadattr(nd, NULL, &nfsva, NULL,
 599                     NULL, 0, NULL, NULL, NULL, NULL, NULL, 0,
 600                     NULL, NULL, NULL, p, cred);
 601                 if (error)
 602                         goto nfsmout;
 603                 if (ndp != NULL) {
 604                         ndp->nfsdl_change = nfsva.na_filerev;
 605                         ndp->nfsdl_modtime = nfsva.na_mtime;
 606                         ndp->nfsdl_flags |= NFSCLDL_MODTIMESET;
 607                 }
 608                 if (!reclaim && (rflags & NFSV4OPEN_RESULTCONFIRM)) {
 609                     do {
 610                         ret = nfsrpc_openconfirm(vp, newfhp, newfhlen, op,
 611                             cred, p);
 612                         if (ret == NFSERR_DELAY)
 613                             (void) nfs_catnap(PZERO, ret, "nfs_open");
 614                     } while (ret == NFSERR_DELAY);
 615                     error = ret;
 616                 }
 617                 if ((rflags & NFSV4OPEN_LOCKTYPEPOSIX) ||
 618                     nfscl_assumeposixlocks)
 619                     op->nfso_posixlock = 1;
 620                 else
 621                     op->nfso_posixlock = 0;
 622
 623                 /*
 624                  * If the server is handing out delegations, but we didn't
 625                  * get one because an OpenConfirm was required, try the
 626                  * Open again, to get a delegation. This is a harmless no-op,
 627                  * from a server's point of view.
 628                  */
 629                 if (!reclaim && (rflags & NFSV4OPEN_RESULTCONFIRM) &&
 630                     (op->nfso_own->nfsow_clp->nfsc_flags & NFSCLFLAGS_GOTDELEG)
 631                     && !error && dp == NULL && ndp == NULL && !recursed) {
 632                     do {
 633                         ret = nfsrpc_openrpc(nmp, vp, nfhp, fhlen, newfhp,
 634                             newfhlen, mode, op, name, namelen, &ndp, 0, 0x0,
 635                             cred, p, syscred, 1);
 636                         if (ret == NFSERR_DELAY)
 637                             (void) nfs_catnap(PZERO, ret, "nfs_open2");
 638                     } while (ret == NFSERR_DELAY);
 639                     if (ret) {
 640                         if (ndp != NULL) {
 641                                 free(ndp, M_NFSCLDELEG);
 642                                 ndp = NULL;
 643                         }
 644                         if (ret == NFSERR_STALECLIENTID ||
 645                             ret == NFSERR_STALEDONTRECOVER ||
 646                             ret == NFSERR_BADSESSION)
 647                                 error = ret;
 648                     }
 649                 }
 650         }
 651         if (nd->nd_repstat != 0 && error == 0)
 652                 error = nd->nd_repstat;
 653         if (error == NFSERR_STALECLIENTID)
 654                 nfscl_initiate_recovery(op->nfso_own->nfsow_clp);
 655 nfsmout:
 656         if (!error)
 657                 *dpp = ndp;
 658         else if (ndp != NULL)
 659                 free(ndp, M_NFSCLDELEG);
 660         mbuf_freem(nd->nd_mrep);
 661         return (error);
 662 }
 663
 664 /*
 665  * open downgrade rpc
 666  */
 667 APPLESTATIC int
 668 nfsrpc_opendowngrade(vnode_t vp, u_int32_t mode, struct nfsclopen *op,
 669     struct ucred *cred, NFSPROC_T *p)
 670 {
 671         u_int32_t *tl;
 672         struct nfsrv_descript nfsd, *nd = &nfsd;
 673         int error;
 674
 675         NFSCL_REQSTART(nd, NFSPROC_OPENDOWNGRADE, vp);
 676         NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID + 3 * NFSX_UNSIGNED);
 677         if (NFSHASNFSV4N(VFSTONFS(vnode_mount(vp))))
 678                 *tl++ = 0;
 679         else
 680                 *tl++ = op->nfso_stateid.seqid;
 681         *tl++ = op->nfso_stateid.other[0];
 682         *tl++ = op->nfso_stateid.other[1];
 683         *tl++ = op->nfso_stateid.other[2];
 684         *tl++ = txdr_unsigned(op->nfso_own->nfsow_seqid);
 685         *tl++ = txdr_unsigned(mode & NFSV4OPEN_ACCESSBOTH);
 686         *tl = txdr_unsigned((mode >> NFSLCK_SHIFT) & NFSV4OPEN_DENYBOTH);
 687         error = nfscl_request(nd, vp, p, cred, NULL);
 688         if (error)
 689                 return (error);
 690         NFSCL_INCRSEQID(op->nfso_own->nfsow_seqid, nd);
 691         if (!nd->nd_repstat) {
 692                 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID);
 693                 op->nfso_stateid.seqid = *tl++;
 694                 op->nfso_stateid.other[0] = *tl++;
 695                 op->nfso_stateid.other[1] = *tl++;
 696                 op->nfso_stateid.other[2] = *tl;
 697         }
 698         if (nd->nd_repstat && error == 0)
 699                 error = nd->nd_repstat;
 700         if (error == NFSERR_STALESTATEID)
 701                 nfscl_initiate_recovery(op->nfso_own->nfsow_clp);
 702 nfsmout:
 703         mbuf_freem(nd->nd_mrep);
 704         return (error);
 705 }
 706
 707 /*
 708  * V4 Close operation.
 709  */
 710 APPLESTATIC int
 711 nfsrpc_close(vnode_t vp, int doclose, NFSPROC_T *p)
 712 {
 713         struct nfsclclient *clp;
 714         int error;
 715
 716         if (vnode_vtype(vp) != VREG)
 717                 return (0);
 718         if (doclose)
 719                 error = nfscl_doclose(vp, &clp, p);
 720         else
 721                 error = nfscl_getclose(vp, &clp);
 722         if (error)
 723                 return (error);
 724
 725         nfscl_clientrelease(clp);
 726         return (0);
 727 }
 728
 729 /*
 730  * Close the open.
 731  */
 732 APPLESTATIC void
 733 nfsrpc_doclose(struct nfsmount *nmp, struct nfsclopen *op, NFSPROC_T *p)
 734 {
 735         struct nfsrv_descript nfsd, *nd = &nfsd;
 736         struct nfscllockowner *lp, *nlp;
 737         struct nfscllock *lop, *nlop;
 738         struct ucred *tcred;
 739         u_int64_t off = 0, len = 0;
 740         u_int32_t type = NFSV4LOCKT_READ;
 741         int error, do_unlock, trycnt;
 742
 743         tcred = newnfs_getcred();
 744         newnfs_copycred(&op->nfso_cred, tcred);
 745         /*
 746          * (Theoretically this could be done in the same
 747          *  compound as the close, but having multiple
 748          *  sequenced Ops in the same compound might be
 749          *  too scary for some servers.)
 750          */
 751         if (op->nfso_posixlock) {
 752                 off = 0;
 753                 len = NFS64BITSSET;
 754                 type = NFSV4LOCKT_READ;
 755         }
 756
 757         /*
 758          * Since this function is only called from VOP_INACTIVE(), no
 759          * other thread will be manipulating this Open. As such, the
 760          * lock lists are not being changed by other threads, so it should
 761          * be safe to do this without locking.
 762          */
 763         LIST_FOREACH(lp, &op->nfso_lock, nfsl_list) {
 764                 do_unlock = 1;
 765                 LIST_FOREACH_SAFE(lop, &lp->nfsl_lock, nfslo_list, nlop) {
 766                         if (op->nfso_posixlock == 0) {
 767                                 off = lop->nfslo_first;
 768                                 len = lop->nfslo_end - lop->nfslo_first;
 769                                 if (lop->nfslo_type == F_WRLCK)
 770                                         type = NFSV4LOCKT_WRITE;
 771                                 else
 772                                         type = NFSV4LOCKT_READ;
 773                         }
 774                         if (do_unlock) {
 775                                 trycnt = 0;
 776                                 do {
 777                                         error = nfsrpc_locku(nd, nmp, lp, off,
 778                                             len, type, tcred, p, 0);
 779                                         if ((nd->nd_repstat == NFSERR_GRACE ||
 780                                             nd->nd_repstat == NFSERR_DELAY) &&
 781                                             error == 0)
 782                                                 (void) nfs_catnap(PZERO,
 783                                                     (int)nd->nd_repstat,
 784                                                     "nfs_close");
 785                                 } while ((nd->nd_repstat == NFSERR_GRACE ||
 786                                     nd->nd_repstat == NFSERR_DELAY) &&
 787                                     error == 0 && trycnt++ < 5);
 788                                 if (op->nfso_posixlock)
 789                                         do_unlock = 0;
 790                         }
 791                         nfscl_freelock(lop, 0);
 792                 }
 793                 /*
 794                  * Do a ReleaseLockOwner.
 795                  * The lock owner name nfsl_owner may be used by other opens for
 796                  * other files but the lock_owner4 name that nfsrpc_rellockown()
 797                  * puts on the wire has the file handle for this file appended
 798                  * to it, so it can be done now.
 799                  */
 800                 (void)nfsrpc_rellockown(nmp, lp, lp->nfsl_open->nfso_fh,
 801                     lp->nfsl_open->nfso_fhlen, tcred, p);
 802         }
 803
 804         /*
 805          * There could be other Opens for different files on the same
 806          * OpenOwner, so locking is required.
 807          */
 808         NFSLOCKCLSTATE();
 809         nfscl_lockexcl(&op->nfso_own->nfsow_rwlock, NFSCLSTATEMUTEXPTR);
 810         NFSUNLOCKCLSTATE();
 811         do {
 812                 error = nfscl_tryclose(op, tcred, nmp, p);
 813                 if (error == NFSERR_GRACE)
 814                         (void) nfs_catnap(PZERO, error, "nfs_close");
 815         } while (error == NFSERR_GRACE);
 816         NFSLOCKCLSTATE();
 817         nfscl_lockunlock(&op->nfso_own->nfsow_rwlock);
 818
 819         LIST_FOREACH_SAFE(lp, &op->nfso_lock, nfsl_list, nlp)
 820                 nfscl_freelockowner(lp, 0);
 821         nfscl_freeopen(op, 0);
 822         NFSUNLOCKCLSTATE();
 823         NFSFREECRED(tcred);
 824 }
 825
 826 /*
 827  * The actual Close RPC.
 828  */
 829 APPLESTATIC int
 830 nfsrpc_closerpc(struct nfsrv_descript *nd, struct nfsmount *nmp,
 831     struct nfsclopen *op, struct ucred *cred, NFSPROC_T *p,
 832     int syscred)
 833 {
 834         u_int32_t *tl;
 835         int error;
 836
 837         nfscl_reqstart(nd, NFSPROC_CLOSE, nmp, op->nfso_fh,
 838             op->nfso_fhlen, NULL, NULL, 0, 0);
 839         NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED + NFSX_STATEID);
 840         *tl++ = txdr_unsigned(op->nfso_own->nfsow_seqid);
 841         if (NFSHASNFSV4N(nmp))
 842                 *tl++ = 0;
 843         else
 844                 *tl++ = op->nfso_stateid.seqid;
 845         *tl++ = op->nfso_stateid.other[0];
 846         *tl++ = op->nfso_stateid.other[1];
 847         *tl = op->nfso_stateid.other[2];
 848         if (syscred)
 849                 nd->nd_flag |= ND_USEGSSNAME;
 850         error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred,
 851             NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL);
 852         if (error)
 853                 return (error);
 854         NFSCL_INCRSEQID(op->nfso_own->nfsow_seqid, nd);
 855         if (nd->nd_repstat == 0)
 856                 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID);
 857         error = nd->nd_repstat;
 858         if (error == NFSERR_STALESTATEID)
 859                 nfscl_initiate_recovery(op->nfso_own->nfsow_clp);
 860 nfsmout:
 861         mbuf_freem(nd->nd_mrep);
 862         return (error);
 863 }
 864
 865 /*
 866  * V4 Open Confirm RPC.
 867  */
 868 APPLESTATIC int
 869 nfsrpc_openconfirm(vnode_t vp, u_int8_t *nfhp, int fhlen,
 870     struct nfsclopen *op, struct ucred *cred, NFSPROC_T *p)
 871 {
 872         u_int32_t *tl;
 873         struct nfsrv_descript nfsd, *nd = &nfsd;
 874         struct nfsmount *nmp;
 875         int error;
 876
 877         nmp = VFSTONFS(vnode_mount(vp));
 878         if (NFSHASNFSV4N(nmp))
 879                 return (0);             /* No confirmation for NFSv4.1. */
 880         nfscl_reqstart(nd, NFSPROC_OPENCONFIRM, nmp, nfhp, fhlen, NULL, NULL,
 881             0, 0);
 882         NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED + NFSX_STATEID);
 883         *tl++ = op->nfso_stateid.seqid;
 884         *tl++ = op->nfso_stateid.other[0];
 885         *tl++ = op->nfso_stateid.other[1];
 886         *tl++ = op->nfso_stateid.other[2];
 887         *tl = txdr_unsigned(op->nfso_own->nfsow_seqid);
 888         error = nfscl_request(nd, vp, p, cred, NULL);
 889         if (error)
 890                 return (error);
 891         NFSCL_INCRSEQID(op->nfso_own->nfsow_seqid, nd);
 892         if (!nd->nd_repstat) {
 893                 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID);
 894                 op->nfso_stateid.seqid = *tl++;
 895                 op->nfso_stateid.other[0] = *tl++;
 896                 op->nfso_stateid.other[1] = *tl++;
 897                 op->nfso_stateid.other[2] = *tl;
 898         }
 899         error = nd->nd_repstat;
 900         if (error == NFSERR_STALESTATEID)
 901                 nfscl_initiate_recovery(op->nfso_own->nfsow_clp);
 902 nfsmout:
 903         mbuf_freem(nd->nd_mrep);
 904         return (error);
 905 }
 906
 907 /*
 908  * Do the setclientid and setclientid confirm RPCs. Called from nfs_statfs()
 909  * when a mount has just occurred and when the server replies NFSERR_EXPIRED.
 910  */
 911 APPLESTATIC int
 912 nfsrpc_setclient(struct nfsmount *nmp, struct nfsclclient *clp, int reclaim,
 913     struct ucred *cred, NFSPROC_T *p)
 914 {
 915         u_int32_t *tl;
 916         struct nfsrv_descript nfsd;
 917         struct nfsrv_descript *nd = &nfsd;
 918         nfsattrbit_t attrbits;
 919         u_int8_t *cp = NULL, *cp2, addr[INET6_ADDRSTRLEN + 9];
 920         u_short port;
 921         int error, isinet6 = 0, callblen;
 922         nfsquad_t confirm;
 923         u_int32_t lease;
 924         static u_int32_t rev = 0;
 925         struct nfsclds *dsp;
 926         struct in6_addr a6;
 927         struct nfsclsession *tsep;
 928
 929         if (nfsboottime.tv_sec == 0)
 930                 NFSSETBOOTTIME(nfsboottime);
 931         clp->nfsc_rev = rev++;
 932         if (NFSHASNFSV4N(nmp)) {
 933                 /*
 934                  * Either there was no previous session or the
 935                  * previous session has failed, so...
 936                  * do an ExchangeID followed by the CreateSession.
 937                  */
 938                 error = nfsrpc_exchangeid(nmp, clp, &nmp->nm_sockreq,
 939                     NFSV4EXCH_USEPNFSMDS | NFSV4EXCH_USENONPNFS, &dsp, cred, p);
 940                 NFSCL_DEBUG(1, "aft exch=%d\n", error);
 941                 if (error == 0)
 942                         error = nfsrpc_createsession(nmp, &dsp->nfsclds_sess,
 943                             &nmp->nm_sockreq,
 944                             dsp->nfsclds_sess.nfsess_sequenceid, 1, cred, p);
 945                 if (error == 0) {
 946                         NFSLOCKMNT(nmp);
 947                         /*
 948                          * The old sessions cannot be safely free'd
 949                          * here, since they may still be used by
 950                          * in-progress RPCs.
 951                          */
 952                         tsep = NULL;
 953                         if (TAILQ_FIRST(&nmp->nm_sess) != NULL)
 954                                 tsep = NFSMNT_MDSSESSION(nmp);
 955                         TAILQ_INSERT_HEAD(&nmp->nm_sess, dsp,
 956                             nfsclds_list);
 957                         /*
 958                          * Wake up RPCs waiting for a slot on the
 959                          * old session. These will then fail with
 960                          * NFSERR_BADSESSION and be retried with the
 961                          * new session by nfsv4_setsequence().
 962                          * Also wakeup() processes waiting for the
 963                          * new session.
 964                          */
 965                         if (tsep != NULL)
 966                                 wakeup(&tsep->nfsess_slots);
 967                         wakeup(&nmp->nm_sess);
 968                         NFSUNLOCKMNT(nmp);
 969                 } else
 970                         nfscl_freenfsclds(dsp);
 971                 NFSCL_DEBUG(1, "aft createsess=%d\n", error);
 972                 if (error == 0 && reclaim == 0) {
 973                         error = nfsrpc_reclaimcomplete(nmp, cred, p);
 974                         NFSCL_DEBUG(1, "aft reclaimcomp=%d\n", error);
 975                         if (error == NFSERR_COMPLETEALREADY ||
 976                             error == NFSERR_NOTSUPP)
 977                                 /* Ignore this error. */
 978                                 error = 0;
 979                 }
 980                 return (error);
 981         }
 982
 983         /*
 984          * Allocate a single session structure for NFSv4.0, because some of
 985          * the fields are used by NFSv4.0 although it doesn't do a session.
 986          */
 987         dsp = malloc(sizeof(struct nfsclds), M_NFSCLDS, M_WAITOK | M_ZERO);
 988         mtx_init(&dsp->nfsclds_mtx, "nfsds", NULL, MTX_DEF);
 989         mtx_init(&dsp->nfsclds_sess.nfsess_mtx, "nfssession", NULL, MTX_DEF);
 990         NFSLOCKMNT(nmp);
 991         TAILQ_INSERT_HEAD(&nmp->nm_sess, dsp, nfsclds_list);
 992         tsep = NFSMNT_MDSSESSION(nmp);
 993         NFSUNLOCKMNT(nmp);
 994
 995         nfscl_reqstart(nd, NFSPROC_SETCLIENTID, nmp, NULL, 0, NULL, NULL, 0, 0);
 996         NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
 997         *tl++ = txdr_unsigned(nfsboottime.tv_sec);
 998         *tl = txdr_unsigned(clp->nfsc_rev);
 999         (void) nfsm_strtom(nd, clp->nfsc_id, clp->nfsc_idlen);
1000
1001         /*
1002          * set up the callback address
1003          */
1004         NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
1005         *tl = txdr_unsigned(NFS_CALLBCKPROG);
1006         callblen = strlen(nfsv4_callbackaddr);
1007         if (callblen == 0)
1008                 cp = nfscl_getmyip(nmp, &a6, &isinet6);
1009         if (nfscl_enablecallb && nfs_numnfscbd > 0 &&
1010             (callblen > 0 || cp != NULL)) {
1011                 port = htons(nfsv4_cbport);
1012                 cp2 = (u_int8_t *)&port;
1013 #ifdef INET6
1014                 if ((callblen > 0 &&
1015                      strchr(nfsv4_callbackaddr, ':')) || isinet6) {
1016                         char ip6buf[INET6_ADDRSTRLEN], *ip6add;
1017
1018                         (void) nfsm_strtom(nd, "tcp6", 4);
1019                         if (callblen == 0) {
1020                                 ip6_sprintf(ip6buf, (struct in6_addr *)cp);
1021                                 ip6add = ip6buf;
1022                         } else {
1023                                 ip6add = nfsv4_callbackaddr;
1024                         }
1025                         snprintf(addr, INET6_ADDRSTRLEN + 9, "%s.%d.%d",
1026                             ip6add, cp2[0], cp2[1]);
1027                 } else
1028 #endif
1029                 {
1030                         (void) nfsm_strtom(nd, "tcp", 3);
1031                         if (callblen == 0)
1032                                 snprintf(addr, INET6_ADDRSTRLEN + 9,
1033                                     "%d.%d.%d.%d.%d.%d", cp[0], cp[1],
1034                                     cp[2], cp[3], cp2[0], cp2[1]);
1035                         else
1036                                 snprintf(addr, INET6_ADDRSTRLEN + 9,
1037                                     "%s.%d.%d", nfsv4_callbackaddr,
1038                                     cp2[0], cp2[1]);
1039                 }
1040                 (void) nfsm_strtom(nd, addr, strlen(addr));
1041         } else {
1042                 (void) nfsm_strtom(nd, "tcp", 3);
1043                 (void) nfsm_strtom(nd, "0.0.0.0.0.0", 11);
1044         }
1045         NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
1046         *tl = txdr_unsigned(clp->nfsc_cbident);
1047         nd->nd_flag |= ND_USEGSSNAME;
1048         error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred,
1049                 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL);
1050         if (error)
1051                 return (error);
1052         if (nd->nd_repstat == 0) {
1053             NFSM_DISSECT(tl, u_int32_t *, 4 * NFSX_UNSIGNED);
1054             tsep->nfsess_clientid.lval[0] = *tl++;
1055             tsep->nfsess_clientid.lval[1] = *tl++;
1056             confirm.lval[0] = *tl++;
1057             confirm.lval[1] = *tl;
1058             mbuf_freem(nd->nd_mrep);
1059             nd->nd_mrep = NULL;
1060
1061             /*
1062              * and confirm it.
1063              */
1064             nfscl_reqstart(nd, NFSPROC_SETCLIENTIDCFRM, nmp, NULL, 0, NULL,
1065                 NULL, 0, 0);
1066             NFSM_BUILD(tl, u_int32_t *, 4 * NFSX_UNSIGNED);
1067             *tl++ = tsep->nfsess_clientid.lval[0];
1068             *tl++ = tsep->nfsess_clientid.lval[1];
1069             *tl++ = confirm.lval[0];
1070             *tl = confirm.lval[1];
1071             nd->nd_flag |= ND_USEGSSNAME;
1072             error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p,
1073                 cred, NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL);
1074             if (error)
1075                 return (error);
1076             mbuf_freem(nd->nd_mrep);
1077             nd->nd_mrep = NULL;
1078             if (nd->nd_repstat == 0) {
1079                 nfscl_reqstart(nd, NFSPROC_GETATTR, nmp, nmp->nm_fh,
1080                     nmp->nm_fhsize, NULL, NULL, 0, 0);
1081                 NFSZERO_ATTRBIT(&attrbits);
1082                 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_LEASETIME);
1083                 (void) nfsrv_putattrbit(nd, &attrbits);
1084                 nd->nd_flag |= ND_USEGSSNAME;
1085                 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p,
1086                     cred, NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL);
1087                 if (error)
1088                     return (error);
1089                 if (nd->nd_repstat == 0) {
1090                     error = nfsv4_loadattr(nd, NULL, NULL, NULL, NULL, 0, NULL,
1091                         NULL, NULL, NULL, NULL, 0, NULL, &lease, NULL, p, cred);
1092                     if (error)
1093                         goto nfsmout;
1094                     clp->nfsc_renew = NFSCL_RENEW(lease);
1095                     clp->nfsc_expire = NFSD_MONOSEC + clp->nfsc_renew;
1096                     clp->nfsc_clientidrev++;
1097                     if (clp->nfsc_clientidrev == 0)
1098                         clp->nfsc_clientidrev++;
1099                 }
1100             }
1101         }
1102         error = nd->nd_repstat;
1103 nfsmout:
1104         mbuf_freem(nd->nd_mrep);
1105         return (error);
1106 }
1107
1108 /*
1109  * nfs getattr call.
1110  */
1111 APPLESTATIC int
1112 nfsrpc_getattr(vnode_t vp, struct ucred *cred, NFSPROC_T *p,
1113     struct nfsvattr *nap, void *stuff)
1114 {
1115         struct nfsrv_descript nfsd, *nd = &nfsd;
1116         int error;
1117         nfsattrbit_t attrbits;
1118
1119         NFSCL_REQSTART(nd, NFSPROC_GETATTR, vp);
1120         if (nd->nd_flag & ND_NFSV4) {
1121                 NFSGETATTR_ATTRBIT(&attrbits);
1122                 (void) nfsrv_putattrbit(nd, &attrbits);
1123         }
1124         error = nfscl_request(nd, vp, p, cred, stuff);
1125         if (error)
1126                 return (error);
1127         if (!nd->nd_repstat)
1128                 error = nfsm_loadattr(nd, nap);
1129         else
1130                 error = nd->nd_repstat;
1131         mbuf_freem(nd->nd_mrep);
1132         return (error);
1133 }
1134
1135 /*
1136  * nfs getattr call with non-vnode arguemnts.
1137  */
1138 APPLESTATIC int
1139 nfsrpc_getattrnovp(struct nfsmount *nmp, u_int8_t *fhp, int fhlen, int syscred,
1140     struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, u_int64_t *xidp,
1141     uint32_t *leasep)
1142 {
1143         struct nfsrv_descript nfsd, *nd = &nfsd;
1144         int error, vers = NFS_VER2;
1145         nfsattrbit_t attrbits;
1146
1147         nfscl_reqstart(nd, NFSPROC_GETATTR, nmp, fhp, fhlen, NULL, NULL, 0, 0);
1148         if (nd->nd_flag & ND_NFSV4) {
1149                 vers = NFS_VER4;
1150                 NFSGETATTR_ATTRBIT(&attrbits);
1151                 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_LEASETIME);
1152                 (void) nfsrv_putattrbit(nd, &attrbits);
1153         } else if (nd->nd_flag & ND_NFSV3) {
1154                 vers = NFS_VER3;
1155         }
1156         if (syscred)
1157                 nd->nd_flag |= ND_USEGSSNAME;
1158         error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred,
1159             NFS_PROG, vers, NULL, 1, xidp, NULL);
1160         if (error)
1161                 return (error);
1162         if (nd->nd_repstat == 0) {
1163                 if ((nd->nd_flag & ND_NFSV4) != 0)
1164                         error = nfsv4_loadattr(nd, NULL, nap, NULL, NULL, 0,
1165                             NULL, NULL, NULL, NULL, NULL, 0, NULL, leasep, NULL,
1166                             NULL, NULL);
1167                 else
1168                         error = nfsm_loadattr(nd, nap);
1169         } else
1170                 error = nd->nd_repstat;
1171         mbuf_freem(nd->nd_mrep);
1172         return (error);
1173 }
1174
1175 /*
1176  * Do an nfs setattr operation.
1177  */
1178 APPLESTATIC int
1179 nfsrpc_setattr(vnode_t vp, struct vattr *vap, NFSACL_T *aclp,
1180     struct ucred *cred, NFSPROC_T *p, struct nfsvattr *rnap, int *attrflagp,
1181     void *stuff)
1182 {
1183         int error, expireret = 0, openerr, retrycnt;
1184         u_int32_t clidrev = 0, mode;
1185         struct nfsmount *nmp = VFSTONFS(vnode_mount(vp));
1186         struct nfsfh *nfhp;
1187         nfsv4stateid_t stateid;
1188         void *lckp;
1189
1190         if (nmp->nm_clp != NULL)
1191                 clidrev = nmp->nm_clp->nfsc_clientidrev;
1192         if (vap != NULL && NFSATTRISSET(u_quad_t, vap, va_size))
1193                 mode = NFSV4OPEN_ACCESSWRITE;
1194         else
1195                 mode = NFSV4OPEN_ACCESSREAD;
1196         retrycnt = 0;
1197         do {
1198                 lckp = NULL;
1199                 openerr = 1;
1200                 if (NFSHASNFSV4(nmp)) {
1201                         nfhp = VTONFS(vp)->n_fhp;
1202                         error = nfscl_getstateid(vp, nfhp->nfh_fh,
1203                             nfhp->nfh_len, mode, 0, cred, p, &stateid, &lckp);
1204                         if (error && vnode_vtype(vp) == VREG &&
1205                             (mode == NFSV4OPEN_ACCESSWRITE ||
1206                              nfstest_openallsetattr)) {
1207                                 /*
1208                                  * No Open stateid, so try and open the file
1209                                  * now.
1210                                  */
1211                                 if (mode == NFSV4OPEN_ACCESSWRITE)
1212                                         openerr = nfsrpc_open(vp, FWRITE, cred,
1213                                             p);
1214                                 else
1215                                         openerr = nfsrpc_open(vp, FREAD, cred,
1216                                             p);
1217                                 if (!openerr)
1218                                         (void) nfscl_getstateid(vp,
1219                                             nfhp->nfh_fh, nfhp->nfh_len,
1220                                             mode, 0, cred, p, &stateid, &lckp);
1221                         }
1222                 }
1223                 if (vap != NULL)
1224                         error = nfsrpc_setattrrpc(vp, vap, &stateid, cred, p,
1225                             rnap, attrflagp, stuff);
1226                 else
1227                         error = nfsrpc_setaclrpc(vp, cred, p, aclp, &stateid,
1228                             stuff);
1229                 if (error == NFSERR_OPENMODE && mode == NFSV4OPEN_ACCESSREAD) {
1230                         NFSLOCKMNT(nmp);
1231                         nmp->nm_state |= NFSSTA_OPENMODE;
1232                         NFSUNLOCKMNT(nmp);
1233                 }
1234                 if (error == NFSERR_STALESTATEID)
1235                         nfscl_initiate_recovery(nmp->nm_clp);
1236                 if (lckp != NULL)
1237                         nfscl_lockderef(lckp);
1238                 if (!openerr)
1239                         (void) nfsrpc_close(vp, 0, p);
1240                 if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID ||
1241                     error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY ||
1242                     error == NFSERR_OLDSTATEID || error == NFSERR_BADSESSION) {
1243                         (void) nfs_catnap(PZERO, error, "nfs_setattr");
1244                 } else if ((error == NFSERR_EXPIRED ||
1245                     error == NFSERR_BADSTATEID) && clidrev != 0) {
1246                         expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p);
1247                 }
1248                 retrycnt++;
1249         } while (error == NFSERR_GRACE || error == NFSERR_STALESTATEID ||
1250             error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY ||
1251             error == NFSERR_BADSESSION ||
1252             (error == NFSERR_OLDSTATEID && retrycnt < 20) ||
1253             ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) &&
1254              expireret == 0 && clidrev != 0 && retrycnt < 4) ||
1255             (error == NFSERR_OPENMODE && mode == NFSV4OPEN_ACCESSREAD &&
1256              retrycnt < 4));
1257         if (error && retrycnt >= 4)
1258                 error = EIO;
1259         return (error);
1260 }
1261
1262 static int
1263 nfsrpc_setattrrpc(vnode_t vp, struct vattr *vap,
1264     nfsv4stateid_t *stateidp, struct ucred *cred, NFSPROC_T *p,
1265     struct nfsvattr *rnap, int *attrflagp, void *stuff)
1266 {
1267         u_int32_t *tl;
1268         struct nfsrv_descript nfsd, *nd = &nfsd;
1269         int error;
1270         nfsattrbit_t attrbits;
1271
1272         *attrflagp = 0;
1273         NFSCL_REQSTART(nd, NFSPROC_SETATTR, vp);
1274         if (nd->nd_flag & ND_NFSV4)
1275                 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID);
1276         vap->va_type = vnode_vtype(vp);
1277         nfscl_fillsattr(nd, vap, vp, NFSSATTR_FULL, 0);
1278         if (nd->nd_flag & ND_NFSV3) {
1279                 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
1280                 *tl = newnfs_false;
1281         } else if (nd->nd_flag & ND_NFSV4) {
1282                 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
1283                 *tl = txdr_unsigned(NFSV4OP_GETATTR);
1284                 NFSGETATTR_ATTRBIT(&attrbits);
1285                 (void) nfsrv_putattrbit(nd, &attrbits);
1286         }
1287         error = nfscl_request(nd, vp, p, cred, stuff);
1288         if (error)
1289                 return (error);
1290         if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4))
1291                 error = nfscl_wcc_data(nd, vp, rnap, attrflagp, NULL, stuff);
1292         if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == ND_NFSV4 && !error)
1293                 error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL);
1294         if (!(nd->nd_flag & ND_NFSV3) && !nd->nd_repstat && !error)
1295                 error = nfscl_postop_attr(nd, rnap, attrflagp, stuff);
1296         mbuf_freem(nd->nd_mrep);
1297         if (nd->nd_repstat && !error)
1298                 error = nd->nd_repstat;
1299         return (error);
1300 }
1301
1302 /*
1303  * nfs lookup rpc
1304  */
1305 APPLESTATIC int
1306 nfsrpc_lookup(vnode_t dvp, char *name, int len, struct ucred *cred,
1307     NFSPROC_T *p, struct nfsvattr *dnap, struct nfsvattr *nap,
1308     struct nfsfh **nfhpp, int *attrflagp, int *dattrflagp, void *stuff)
1309 {
1310         u_int32_t *tl;
1311         struct nfsrv_descript nfsd, *nd = &nfsd;
1312         struct nfsmount *nmp;
1313         struct nfsnode *np;
1314         struct nfsfh *nfhp;
1315         nfsattrbit_t attrbits;
1316         int error = 0, lookupp = 0;
1317
1318         *attrflagp = 0;
1319         *dattrflagp = 0;
1320         if (vnode_vtype(dvp) != VDIR)
1321                 return (ENOTDIR);
1322         nmp = VFSTONFS(vnode_mount(dvp));
1323         if (len > NFS_MAXNAMLEN)
1324                 return (ENAMETOOLONG);
1325         if (NFSHASNFSV4(nmp) && len == 1 &&
1326                 name[0] == '.') {
1327                 /*
1328                  * Just return the current dir's fh.
1329                  */
1330                 np = VTONFS(dvp);
1331                 nfhp = malloc(sizeof (struct nfsfh) +
1332                         np->n_fhp->nfh_len, M_NFSFH, M_WAITOK);
1333                 nfhp->nfh_len = np->n_fhp->nfh_len;
1334                 NFSBCOPY(np->n_fhp->nfh_fh, nfhp->nfh_fh, nfhp->nfh_len);
1335                 *nfhpp = nfhp;
1336                 return (0);
1337         }
1338         if (NFSHASNFSV4(nmp) && len == 2 &&
1339                 name[0] == '.' && name[1] == '.') {
1340                 lookupp = 1;
1341                 NFSCL_REQSTART(nd, NFSPROC_LOOKUPP, dvp);
1342         } else {
1343                 NFSCL_REQSTART(nd, NFSPROC_LOOKUP, dvp);
1344                 (void) nfsm_strtom(nd, name, len);
1345         }
1346         if (nd->nd_flag & ND_NFSV4) {
1347                 NFSGETATTR_ATTRBIT(&attrbits);
1348                 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
1349                 *tl++ = txdr_unsigned(NFSV4OP_GETFH);
1350                 *tl = txdr_unsigned(NFSV4OP_GETATTR);
1351                 (void) nfsrv_putattrbit(nd, &attrbits);
1352         }
1353         error = nfscl_request(nd, dvp, p, cred, stuff);
1354         if (error)
1355                 return (error);
1356         if (nd->nd_repstat) {
1357                 /*
1358                  * When an NFSv4 Lookupp returns ENOENT, it means that
1359                  * the lookup is at the root of an fs, so return this dir.
1360                  */
1361                 if (nd->nd_repstat == NFSERR_NOENT && lookupp) {
1362                     np = VTONFS(dvp);
1363                     nfhp = malloc(sizeof (struct nfsfh) +
1364                         np->n_fhp->nfh_len, M_NFSFH, M_WAITOK);
1365                     nfhp->nfh_len = np->n_fhp->nfh_len;
1366                     NFSBCOPY(np->n_fhp->nfh_fh, nfhp->nfh_fh, nfhp->nfh_len);
1367                     *nfhpp = nfhp;
1368                     mbuf_freem(nd->nd_mrep);
1369                     return (0);
1370                 }
1371                 if (nd->nd_flag & ND_NFSV3)
1372                     error = nfscl_postop_attr(nd, dnap, dattrflagp, stuff);
1373                 else if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) ==
1374                     ND_NFSV4) {
1375                         /* Load the directory attributes. */
1376                         error = nfsm_loadattr(nd, dnap);
1377                         if (error == 0)
1378                                 *dattrflagp = 1;
1379                 }
1380                 goto nfsmout;
1381         }
1382         if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == ND_NFSV4) {
1383                 /* Load the directory attributes. */
1384                 error = nfsm_loadattr(nd, dnap);
1385                 if (error != 0)
1386                         goto nfsmout;
1387                 *dattrflagp = 1;
1388                 /* Skip over the Lookup and GetFH operation status values. */
1389                 NFSM_DISSECT(tl, u_int32_t *, 4 * NFSX_UNSIGNED);
1390         }
1391         error = nfsm_getfh(nd, nfhpp);
1392         if (error)
1393                 goto nfsmout;
1394
1395         error = nfscl_postop_attr(nd, nap, attrflagp, stuff);
1396         if ((nd->nd_flag & ND_NFSV3) && !error)
1397                 error = nfscl_postop_attr(nd, dnap, dattrflagp, stuff);
1398 nfsmout:
1399         mbuf_freem(nd->nd_mrep);
1400         if (!error && nd->nd_repstat)
1401                 error = nd->nd_repstat;
1402         return (error);
1403 }
1404
1405 /*
1406  * Do a readlink rpc.
1407  */
1408 APPLESTATIC int
1409 nfsrpc_readlink(vnode_t vp, struct uio *uiop, struct ucred *cred,
1410     NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff)
1411 {
1412         u_int32_t *tl;
1413         struct nfsrv_descript nfsd, *nd = &nfsd;
1414         struct nfsnode *np = VTONFS(vp);
1415         nfsattrbit_t attrbits;
1416         int error, len, cangetattr = 1;
1417
1418         *attrflagp = 0;
1419         NFSCL_REQSTART(nd, NFSPROC_READLINK, vp);
1420         if (nd->nd_flag & ND_NFSV4) {
1421                 /*
1422                  * And do a Getattr op.
1423                  */
1424                 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
1425                 *tl = txdr_unsigned(NFSV4OP_GETATTR);
1426                 NFSGETATTR_ATTRBIT(&attrbits);
1427                 (void) nfsrv_putattrbit(nd, &attrbits);
1428         }
1429         error = nfscl_request(nd, vp, p, cred, stuff);
1430         if (error)
1431                 return (error);
1432         if (nd->nd_flag & ND_NFSV3)
1433                 error = nfscl_postop_attr(nd, nap, attrflagp, stuff);
1434         if (!nd->nd_repstat && !error) {
1435                 NFSM_STRSIZ(len, NFS_MAXPATHLEN);
1436                 /*
1437                  * This seems weird to me, but must have been added to
1438                  * FreeBSD for some reason. The only thing I can think of
1439                  * is that there was/is some server that replies with
1440                  * more link data than it should?
1441                  */
1442                 if (len == NFS_MAXPATHLEN) {
1443                         NFSLOCKNODE(np);
1444                         if (np->n_size > 0 && np->n_size < NFS_MAXPATHLEN) {
1445                                 len = np->n_size;
1446                                 cangetattr = 0;
1447                         }
1448                         NFSUNLOCKNODE(np);
1449                 }
1450                 error = nfsm_mbufuio(nd, uiop, len);
1451                 if ((nd->nd_flag & ND_NFSV4) && !error && cangetattr)
1452                         error = nfscl_postop_attr(nd, nap, attrflagp, stuff);
1453         }
1454         if (nd->nd_repstat && !error)
1455                 error = nd->nd_repstat;
1456 nfsmout:
1457         mbuf_freem(nd->nd_mrep);
1458         return (error);
1459 }
1460
1461 /*
1462  * Read operation.
1463  */
1464 APPLESTATIC int
1465 nfsrpc_read(vnode_t vp, struct uio *uiop, struct ucred *cred,
1466     NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff)
1467 {
1468         int error, expireret = 0, retrycnt;
1469         u_int32_t clidrev = 0;
1470         struct nfsmount *nmp = VFSTONFS(vnode_mount(vp));
1471         struct nfsnode *np = VTONFS(vp);
1472         struct ucred *newcred;
1473         struct nfsfh *nfhp = NULL;
1474         nfsv4stateid_t stateid;
1475         void *lckp;
1476
1477         if (nmp->nm_clp != NULL)
1478                 clidrev = nmp->nm_clp->nfsc_clientidrev;
1479         newcred = cred;
1480         if (NFSHASNFSV4(nmp)) {
1481                 nfhp = np->n_fhp;
1482                 newcred = NFSNEWCRED(cred);
1483         }
1484         retrycnt = 0;
1485         do {
1486                 lckp = NULL;
1487                 if (NFSHASNFSV4(nmp))
1488                         (void)nfscl_getstateid(vp, nfhp->nfh_fh, nfhp->nfh_len,
1489                             NFSV4OPEN_ACCESSREAD, 0, newcred, p, &stateid,
1490                             &lckp);
1491                 error = nfsrpc_readrpc(vp, uiop, newcred, &stateid, p, nap,
1492                     attrflagp, stuff);
1493                 if (error == NFSERR_OPENMODE) {
1494                         NFSLOCKMNT(nmp);
1495                         nmp->nm_state |= NFSSTA_OPENMODE;
1496                         NFSUNLOCKMNT(nmp);
1497                 }
1498                 if (error == NFSERR_STALESTATEID)
1499                         nfscl_initiate_recovery(nmp->nm_clp);
1500                 if (lckp != NULL)
1501                         nfscl_lockderef(lckp);
1502                 if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID ||
1503                     error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY ||
1504                     error == NFSERR_OLDSTATEID || error == NFSERR_BADSESSION) {
1505                         (void) nfs_catnap(PZERO, error, "nfs_read");
1506                 } else if ((error == NFSERR_EXPIRED ||
1507                     error == NFSERR_BADSTATEID) && clidrev != 0) {
1508                         expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p);
1509                 }
1510                 retrycnt++;
1511         } while (error == NFSERR_GRACE || error == NFSERR_STALESTATEID ||
1512             error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY ||
1513             error == NFSERR_BADSESSION ||
1514             (error == NFSERR_OLDSTATEID && retrycnt < 20) ||
1515             ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) &&
1516              expireret == 0 && clidrev != 0 && retrycnt < 4) ||
1517             (error == NFSERR_OPENMODE && retrycnt < 4));
1518         if (error && retrycnt >= 4)
1519                 error = EIO;
1520         if (NFSHASNFSV4(nmp))
1521                 NFSFREECRED(newcred);
1522         return (error);
1523 }
1524
1525 /*
1526  * The actual read RPC.
1527  */
1528 static int
1529 nfsrpc_readrpc(vnode_t vp, struct uio *uiop, struct ucred *cred,
1530     nfsv4stateid_t *stateidp, NFSPROC_T *p, struct nfsvattr *nap,
1531     int *attrflagp, void *stuff)
1532 {
1533         u_int32_t *tl;
1534         int error = 0, len, retlen, tsiz, eof = 0;
1535         struct nfsrv_descript nfsd;
1536         struct nfsmount *nmp = VFSTONFS(vnode_mount(vp));
1537         struct nfsrv_descript *nd = &nfsd;
1538         int rsize;
1539         off_t tmp_off;
1540
1541         *attrflagp = 0;
1542         tsiz = uio_uio_resid(uiop);
1543         tmp_off = uiop->uio_offset + tsiz;
1544         NFSLOCKMNT(nmp);
1545         if (tmp_off > nmp->nm_maxfilesize || tmp_off < uiop->uio_offset) {
1546                 NFSUNLOCKMNT(nmp);
1547                 return (EFBIG);
1548         }
1549         rsize = nmp->nm_rsize;
1550         NFSUNLOCKMNT(nmp);
1551         nd->nd_mrep = NULL;
1552         while (tsiz > 0) {
1553                 *attrflagp = 0;
1554                 len = (tsiz > rsize) ? rsize : tsiz;
1555                 NFSCL_REQSTART(nd, NFSPROC_READ, vp);
1556                 if (nd->nd_flag & ND_NFSV4)
1557                         nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID);
1558                 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED * 3);
1559                 if (nd->nd_flag & ND_NFSV2) {
1560                         *tl++ = txdr_unsigned(uiop->uio_offset);
1561                         *tl++ = txdr_unsigned(len);
1562                         *tl = 0;
1563                 } else {
1564                         txdr_hyper(uiop->uio_offset, tl);
1565                         *(tl + 2) = txdr_unsigned(len);
1566                 }
1567                 /*
1568                  * Since I can't do a Getattr for NFSv4 for Write, there
1569                  * doesn't seem any point in doing one here, either.
1570                  * (See the comment in nfsrpc_writerpc() for more info.)
1571                  */
1572                 error = nfscl_request(nd, vp, p, cred, stuff);
1573                 if (error)
1574                         return (error);
1575                 if (nd->nd_flag & ND_NFSV3) {
1576                         error = nfscl_postop_attr(nd, nap, attrflagp, stuff);
1577                 } else if (!nd->nd_repstat && (nd->nd_flag & ND_NFSV2)) {
1578                         error = nfsm_loadattr(nd, nap);
1579                         if (!error)
1580                                 *attrflagp = 1;
1581                 }
1582                 if (nd->nd_repstat || error) {
1583                         if (!error)
1584                                 error = nd->nd_repstat;
1585                         goto nfsmout;
1586                 }
1587                 if (nd->nd_flag & ND_NFSV3) {
1588                         NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
1589                         eof = fxdr_unsigned(int, *(tl + 1));
1590                 } else if (nd->nd_flag & ND_NFSV4) {
1591                         NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
1592                         eof = fxdr_unsigned(int, *tl);
1593                 }
1594                 NFSM_STRSIZ(retlen, len);
1595                 error = nfsm_mbufuio(nd, uiop, retlen);
1596                 if (error)
1597                         goto nfsmout;
1598                 mbuf_freem(nd->nd_mrep);
1599                 nd->nd_mrep = NULL;
1600                 tsiz -= retlen;
1601                 if (!(nd->nd_flag & ND_NFSV2)) {
1602                         if (eof || retlen == 0)
1603                                 tsiz = 0;
1604                 } else if (retlen < len)
1605                         tsiz = 0;
1606         }
1607         return (0);
1608 nfsmout:
1609         if (nd->nd_mrep != NULL)
1610                 mbuf_freem(nd->nd_mrep);
1611         return (error);
1612 }
1613
1614 /*
1615  * nfs write operation
1616  * When called_from_strategy != 0, it should return EIO for an error that
1617  * indicates recovery is in progress, so that the buffer will be left
1618  * dirty and be written back to the server later. If it loops around,
1619  * the recovery thread could get stuck waiting for the buffer and recovery
1620  * will then deadlock.
1621  */
1622 APPLESTATIC int
1623 nfsrpc_write(vnode_t vp, struct uio *uiop, int *iomode, int *must_commit,
1624     struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp,
1625     void *stuff, int called_from_strategy)
1626 {
1627         int error, expireret = 0, retrycnt, nostateid;
1628         u_int32_t clidrev = 0;
1629         struct nfsmount *nmp = VFSTONFS(vnode_mount(vp));
1630         struct nfsnode *np = VTONFS(vp);
1631         struct ucred *newcred;
1632         struct nfsfh *nfhp = NULL;
1633         nfsv4stateid_t stateid;
1634         void *lckp;
1635
1636         *must_commit = 0;
1637         if (nmp->nm_clp != NULL)
1638                 clidrev = nmp->nm_clp->nfsc_clientidrev;
1639         newcred = cred;
1640         if (NFSHASNFSV4(nmp)) {
1641                 newcred = NFSNEWCRED(cred);
1642                 nfhp = np->n_fhp;
1643         }
1644         retrycnt = 0;
1645         do {
1646                 lckp = NULL;
1647                 nostateid = 0;
1648                 if (NFSHASNFSV4(nmp)) {
1649                         (void)nfscl_getstateid(vp, nfhp->nfh_fh, nfhp->nfh_len,
1650                             NFSV4OPEN_ACCESSWRITE, 0, newcred, p, &stateid,
1651                             &lckp);
1652                         if (stateid.other[0] == 0 && stateid.other[1] == 0 &&
1653                             stateid.other[2] == 0) {
1654                                 nostateid = 1;
1655                                 NFSCL_DEBUG(1, "stateid0 in write\n");
1656                         }
1657                 }
1658
1659                 /*
1660                  * If there is no stateid for NFSv4, it means this is an
1661                  * extraneous write after close. Basically a poorly
1662                  * implemented buffer cache. Just don't do the write.
1663                  */
1664                 if (nostateid)
1665                         error = 0;
1666                 else
1667                         error = nfsrpc_writerpc(vp, uiop, iomode, must_commit,
1668                             newcred, &stateid, p, nap, attrflagp, stuff);
1669                 if (error == NFSERR_STALESTATEID)
1670                         nfscl_initiate_recovery(nmp->nm_clp);
1671                 if (lckp != NULL)
1672                         nfscl_lockderef(lckp);
1673                 if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID ||
1674                     error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY ||
1675                     error == NFSERR_OLDSTATEID || error == NFSERR_BADSESSION) {
1676                         (void) nfs_catnap(PZERO, error, "nfs_write");
1677                 } else if ((error == NFSERR_EXPIRED ||
1678                     error == NFSERR_BADSTATEID) && clidrev != 0) {
1679                         expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p);
1680                 }
1681                 retrycnt++;
1682         } while (error == NFSERR_GRACE || error == NFSERR_DELAY ||
1683             ((error == NFSERR_STALESTATEID || error == NFSERR_BADSESSION ||
1684               error == NFSERR_STALEDONTRECOVER) && called_from_strategy == 0) ||
1685             (error == NFSERR_OLDSTATEID && retrycnt < 20) ||
1686             ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) &&
1687              expireret == 0 && clidrev != 0 && retrycnt < 4));
1688         if (error != 0 && (retrycnt >= 4 ||
1689             ((error == NFSERR_STALESTATEID || error == NFSERR_BADSESSION ||
1690               error == NFSERR_STALEDONTRECOVER) && called_from_strategy != 0)))
1691                 error = EIO;
1692         if (NFSHASNFSV4(nmp))
1693                 NFSFREECRED(newcred);
1694         return (error);
1695 }
1696
1697 /*
1698  * The actual write RPC.
1699  */
1700 static int
1701 nfsrpc_writerpc(vnode_t vp, struct uio *uiop, int *iomode,
1702     int *must_commit, struct ucred *cred, nfsv4stateid_t *stateidp,
1703     NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff)
1704 {
1705         u_int32_t *tl;
1706         struct nfsmount *nmp = VFSTONFS(vnode_mount(vp));
1707         struct nfsnode *np = VTONFS(vp);
1708         int error = 0, len, tsiz, rlen, commit, committed = NFSWRITE_FILESYNC;
1709         int wccflag = 0, wsize;
1710         int32_t backup;
1711         struct nfsrv_descript nfsd;
1712         struct nfsrv_descript *nd = &nfsd;
1713         nfsattrbit_t attrbits;
1714         off_t tmp_off;
1715
1716         KASSERT(uiop->uio_iovcnt == 1, ("nfs: writerpc iovcnt > 1"));
1717         *attrflagp = 0;
1718         tsiz = uio_uio_resid(uiop);
1719         tmp_off = uiop->uio_offset + tsiz;
1720         NFSLOCKMNT(nmp);
1721         if (tmp_off > nmp->nm_maxfilesize || tmp_off < uiop->uio_offset) {
1722                 NFSUNLOCKMNT(nmp);
1723                 return (EFBIG);
1724         }
1725         wsize = nmp->nm_wsize;
1726         NFSUNLOCKMNT(nmp);
1727         nd->nd_mrep = NULL;     /* NFSv2 sometimes does a write with */
1728         nd->nd_repstat = 0;     /* uio_resid == 0, so the while is not done */
1729         while (tsiz > 0) {
1730                 *attrflagp = 0;
1731                 len = (tsiz > wsize) ? wsize : tsiz;
1732                 NFSCL_REQSTART(nd, NFSPROC_WRITE, vp);
1733                 if (nd->nd_flag & ND_NFSV4) {
1734                         nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID);
1735                         NFSM_BUILD(tl, u_int32_t *, NFSX_HYPER+2*NFSX_UNSIGNED);
1736                         txdr_hyper(uiop->uio_offset, tl);
1737                         tl += 2;
1738                         *tl++ = txdr_unsigned(*iomode);
1739                         *tl = txdr_unsigned(len);
1740                 } else if (nd->nd_flag & ND_NFSV3) {
1741                         NFSM_BUILD(tl, u_int32_t *, NFSX_HYPER+3*NFSX_UNSIGNED);
1742                         txdr_hyper(uiop->uio_offset, tl);
1743                         tl += 2;
1744                         *tl++ = txdr_unsigned(len);
1745                         *tl++ = txdr_unsigned(*iomode);
1746                         *tl = txdr_unsigned(len);
1747                 } else {
1748                         u_int32_t x;
1749
1750                         NFSM_BUILD(tl, u_int32_t *, 4 * NFSX_UNSIGNED);
1751                         /*
1752                          * Not sure why someone changed this, since the
1753                          * RFC clearly states that "beginoffset" and
1754                          * "totalcount" are ignored, but it wouldn't
1755                          * surprise me if there's a busted server out there.
1756                          */
1757                         /* Set both "begin" and "current" to non-garbage. */
1758                         x = txdr_unsigned((u_int32_t)uiop->uio_offset);
1759                         *tl++ = x;      /* "begin offset" */
1760                         *tl++ = x;      /* "current offset" */
1761                         x = txdr_unsigned(len);
1762                         *tl++ = x;      /* total to this offset */
1763                         *tl = x;        /* size of this write */
1764
1765                 }
1766                 nfsm_uiombuf(nd, uiop, len);
1767                 /*
1768                  * Although it is tempting to do a normal Getattr Op in the
1769                  * NFSv4 compound, the result can be a nearly hung client
1770                  * system if the Getattr asks for Owner and/or OwnerGroup.
1771                  * It occurs when the client can't map either the Owner or
1772                  * Owner_group name in the Getattr reply to a uid/gid. When
1773                  * there is a cache miss, the kernel does an upcall to the
1774                  * nfsuserd. Then, it can try and read the local /etc/passwd
1775                  * or /etc/group file. It can then block in getnewbuf(),
1776                  * waiting for dirty writes to be pushed to the NFS server.
1777                  * The only reason this doesn't result in a complete
1778                  * deadlock, is that the upcall times out and allows
1779                  * the write to complete. However, progress is so slow
1780                  * that it might just as well be deadlocked.
1781                  * As such, we get the rest of the attributes, but not
1782                  * Owner or Owner_group.
1783                  * nb: nfscl_loadattrcache() needs to be told that these
1784                  *     partial attributes from a write rpc are being
1785                  *     passed in, via a argument flag.
1786                  */
1787                 if (nd->nd_flag & ND_NFSV4) {
1788                         NFSWRITEGETATTR_ATTRBIT(&attrbits);
1789                         NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
1790                         *tl = txdr_unsigned(NFSV4OP_GETATTR);
1791                         (void) nfsrv_putattrbit(nd, &attrbits);
1792                 }
1793                 error = nfscl_request(nd, vp, p, cred, stuff);
1794                 if (error)
1795                         return (error);
1796                 if (nd->nd_repstat) {
1797                         /*
1798                          * In case the rpc gets retried, roll
1799                          * the uio fileds changed by nfsm_uiombuf()
1800                          * back.
1801                          */
1802                         uiop->uio_offset -= len;
1803                         uio_uio_resid_add(uiop, len);
1804                         uio_iov_base_add(uiop, -len);
1805                         uio_iov_len_add(uiop, len);
1806                 }
1807                 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) {
1808                         error = nfscl_wcc_data(nd, vp, nap, attrflagp,
1809                             &wccflag, stuff);
1810                         if (error)
1811                                 goto nfsmout;
1812                 }
1813                 if (!nd->nd_repstat) {
1814                         if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) {
1815                                 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED
1816                                         + NFSX_VERF);
1817                                 rlen = fxdr_unsigned(int, *tl++);
1818                                 if (rlen == 0) {
1819                                         error = NFSERR_IO;
1820                                         goto nfsmout;
1821                                 } else if (rlen < len) {
1822                                         backup = len - rlen;
1823                                         uio_iov_base_add(uiop, -(backup));
1824                                         uio_iov_len_add(uiop, backup);
1825                                         uiop->uio_offset -= backup;
1826                                         uio_uio_resid_add(uiop, backup);
1827                                         len = rlen;
1828                                 }
1829                                 commit = fxdr_unsigned(int, *tl++);
1830
1831                                 /*
1832                                  * Return the lowest commitment level
1833                                  * obtained by any of the RPCs.
1834                                  */
1835                                 if (committed == NFSWRITE_FILESYNC)
1836                                         committed = commit;
1837                                 else if (committed == NFSWRITE_DATASYNC &&
1838                                         commit == NFSWRITE_UNSTABLE)
1839                                         committed = commit;
1840                                 NFSLOCKMNT(nmp);
1841                                 if (!NFSHASWRITEVERF(nmp)) {
1842                                         NFSBCOPY((caddr_t)tl,
1843                                             (caddr_t)&nmp->nm_verf[0],
1844                                             NFSX_VERF);
1845                                         NFSSETWRITEVERF(nmp);
1846                                 } else if (NFSBCMP(tl, nmp->nm_verf,
1847                                     NFSX_VERF)) {
1848                                         *must_commit = 1;
1849                                         NFSBCOPY(tl, nmp->nm_verf, NFSX_VERF);
1850                                 }
1851                                 NFSUNLOCKMNT(nmp);
1852                         }
1853                         if (nd->nd_flag & ND_NFSV4)
1854                                 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
1855                         if (nd->nd_flag & (ND_NFSV2 | ND_NFSV4)) {
1856                                 error = nfsm_loadattr(nd, nap);
1857                                 if (!error)
1858                                         *attrflagp = NFS_LATTR_NOSHRINK;
1859                         }
1860                 } else {
1861                         error = nd->nd_repstat;
1862                 }
1863                 if (error)
1864                         goto nfsmout;
1865                 NFSWRITERPC_SETTIME(wccflag, np, nap, (nd->nd_flag & ND_NFSV4));
1866                 mbuf_freem(nd->nd_mrep);
1867                 nd->nd_mrep = NULL;
1868                 tsiz -= len;
1869         }
1870 nfsmout:
1871         if (nd->nd_mrep != NULL)
1872                 mbuf_freem(nd->nd_mrep);
1873         *iomode = committed;
1874         if (nd->nd_repstat && !error)
1875                 error = nd->nd_repstat;
1876         return (error);
1877 }
1878
1879 /*
1880  * nfs mknod rpc
1881  * For NFS v2 this is a kludge. Use a create rpc but with the IFMT bits of the
1882  * mode set to specify the file type and the size field for rdev.
1883  */
1884 APPLESTATIC int
1885 nfsrpc_mknod(vnode_t dvp, char *name, int namelen, struct vattr *vap,
1886     u_int32_t rdev, enum vtype vtyp, struct ucred *cred, NFSPROC_T *p,
1887     struct nfsvattr *dnap, struct nfsvattr *nnap, struct nfsfh **nfhpp,
1888     int *attrflagp, int *dattrflagp, void *dstuff)
1889 {
1890         u_int32_t *tl;
1891         int error = 0;
1892         struct nfsrv_descript nfsd, *nd = &nfsd;
1893         nfsattrbit_t attrbits;
1894
1895         *nfhpp = NULL;
1896         *attrflagp = 0;
1897         *dattrflagp = 0;
1898         if (namelen > NFS_MAXNAMLEN)
1899                 return (ENAMETOOLONG);
1900         NFSCL_REQSTART(nd, NFSPROC_MKNOD, dvp);
1901         if (nd->nd_flag & ND_NFSV4) {
1902                 if (vtyp == VBLK || vtyp == VCHR) {
1903                         NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED);
1904                         *tl++ = vtonfsv34_type(vtyp);
1905                         *tl++ = txdr_unsigned(NFSMAJOR(rdev));
1906                         *tl = txdr_unsigned(NFSMINOR(rdev));
1907                 } else {
1908                         NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
1909                         *tl = vtonfsv34_type(vtyp);
1910                 }
1911         }
1912         (void) nfsm_strtom(nd, name, namelen);
1913         if (nd->nd_flag & ND_NFSV3) {
1914                 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
1915                 *tl = vtonfsv34_type(vtyp);
1916         }
1917         if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4))
1918                 nfscl_fillsattr(nd, vap, dvp, 0, 0);
1919         if ((nd->nd_flag & ND_NFSV3) &&
1920             (vtyp == VCHR || vtyp == VBLK)) {
1921                 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
1922                 *tl++ = txdr_unsigned(NFSMAJOR(rdev));
1923                 *tl = txdr_unsigned(NFSMINOR(rdev));
1924         }
1925         if (nd->nd_flag & ND_NFSV4) {
1926                 NFSGETATTR_ATTRBIT(&attrbits);
1927                 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
1928                 *tl++ = txdr_unsigned(NFSV4OP_GETFH);
1929                 *tl = txdr_unsigned(NFSV4OP_GETATTR);
1930                 (void) nfsrv_putattrbit(nd, &attrbits);
1931         }
1932         if (nd->nd_flag & ND_NFSV2)
1933                 nfscl_fillsattr(nd, vap, dvp, NFSSATTR_SIZERDEV, rdev);
1934         error = nfscl_request(nd, dvp, p, cred, dstuff);
1935         if (error)
1936                 return (error);
1937         if (nd->nd_flag & ND_NFSV4)
1938                 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff);
1939         if (!nd->nd_repstat) {
1940                 if (nd->nd_flag & ND_NFSV4) {
1941                         NFSM_DISSECT(tl, u_int32_t *, 5 * NFSX_UNSIGNED);
1942                         error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL);
1943                         if (error)
1944                                 goto nfsmout;
1945                 }
1946                 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp);
1947                 if (error)
1948                         goto nfsmout;
1949         }
1950         if (nd->nd_flag & ND_NFSV3)
1951                 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff);
1952         if (!error && nd->nd_repstat)
1953                 error = nd->nd_repstat;
1954 nfsmout:
1955         mbuf_freem(nd->nd_mrep);
1956         return (error);
1957 }
1958
1959 /*
1960  * nfs file create call
1961  * Mostly just call the approriate routine. (I separated out v4, so that
1962  * error recovery wouldn't be as difficult.)
1963  */
1964 APPLESTATIC int
1965 nfsrpc_create(vnode_t dvp, char *name, int namelen, struct vattr *vap,
1966     nfsquad_t cverf, int fmode, struct ucred *cred, NFSPROC_T *p,
1967     struct nfsvattr *dnap, struct nfsvattr *nnap, struct nfsfh **nfhpp,
1968     int *attrflagp, int *dattrflagp, void *dstuff)
1969 {
1970         int error = 0, newone, expireret = 0, retrycnt, unlocked;
1971         struct nfsclowner *owp;
1972         struct nfscldeleg *dp;
1973         struct nfsmount *nmp = VFSTONFS(vnode_mount(dvp));
1974         u_int32_t clidrev;
1975
1976         if (NFSHASNFSV4(nmp)) {
1977             retrycnt = 0;
1978             do {
1979                 dp = NULL;
1980                 error = nfscl_open(dvp, NULL, 0, (NFSV4OPEN_ACCESSWRITE |
1981                     NFSV4OPEN_ACCESSREAD), 0, cred, p, &owp, NULL, &newone,
1982                     NULL, 1);
1983                 if (error)
1984                         return (error);
1985                 if (nmp->nm_clp != NULL)
1986                         clidrev = nmp->nm_clp->nfsc_clientidrev;
1987                 else
1988                         clidrev = 0;
1989                 if (!NFSHASPNFS(nmp) || nfscl_enablecallb == 0 ||
1990                     nfs_numnfscbd == 0 || retrycnt > 0)
1991                         error = nfsrpc_createv4(dvp, name, namelen, vap, cverf,
1992                           fmode, owp, &dp, cred, p, dnap, nnap, nfhpp,
1993                           attrflagp, dattrflagp, dstuff, &unlocked);
1994                 else
1995                         error = nfsrpc_getcreatelayout(dvp, name, namelen, vap,
1996                           cverf, fmode, owp, &dp, cred, p, dnap, nnap, nfhpp,
1997                           attrflagp, dattrflagp, dstuff, &unlocked);
1998                 /*
1999                  * There is no need to invalidate cached attributes here,
2000                  * since new post-delegation issue attributes are always
2001                  * returned by nfsrpc_createv4() and these will update the
2002                  * attribute cache.
2003                  */
2004                 if (dp != NULL)
2005                         (void) nfscl_deleg(nmp->nm_mountp, owp->nfsow_clp,
2006                             (*nfhpp)->nfh_fh, (*nfhpp)->nfh_len, cred, p, &dp);
2007                 nfscl_ownerrelease(nmp, owp, error, newone, unlocked);
2008                 if (error == NFSERR_GRACE || error == NFSERR_STALECLIENTID ||
2009                     error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY ||
2010                     error == NFSERR_BADSESSION) {
2011                         (void) nfs_catnap(PZERO, error, "nfs_open");
2012                 } else if ((error == NFSERR_EXPIRED ||
2013                     error == NFSERR_BADSTATEID) && clidrev != 0) {
2014                         expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p);
2015                         retrycnt++;
2016                 }
2017             } while (error == NFSERR_GRACE || error == NFSERR_STALECLIENTID ||
2018                 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY ||
2019                 error == NFSERR_BADSESSION ||
2020                 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) &&
2021                  expireret == 0 && clidrev != 0 && retrycnt < 4));
2022             if (error && retrycnt >= 4)
2023                     error = EIO;
2024         } else {
2025                 error = nfsrpc_createv23(dvp, name, namelen, vap, cverf,
2026                     fmode, cred, p, dnap, nnap, nfhpp, attrflagp, dattrflagp,
2027                     dstuff);
2028         }
2029         return (error);
2030 }
2031
2032 /*
2033  * The create rpc for v2 and 3.
2034  */
2035 static int
2036 nfsrpc_createv23(vnode_t dvp, char *name, int namelen, struct vattr *vap,
2037     nfsquad_t cverf, int fmode, struct ucred *cred, NFSPROC_T *p,
2038     struct nfsvattr *dnap, struct nfsvattr *nnap, struct nfsfh **nfhpp,
2039     int *attrflagp, int *dattrflagp, void *dstuff)
2040 {
2041         u_int32_t *tl;
2042         int error = 0;
2043         struct nfsrv_descript nfsd, *nd = &nfsd;
2044
2045         *nfhpp = NULL;
2046         *attrflagp = 0;
2047         *dattrflagp = 0;
2048         if (namelen > NFS_MAXNAMLEN)
2049                 return (ENAMETOOLONG);
2050         NFSCL_REQSTART(nd, NFSPROC_CREATE, dvp);
2051         (void) nfsm_strtom(nd, name, namelen);
2052         if (nd->nd_flag & ND_NFSV3) {
2053                 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
2054                 if (fmode & O_EXCL) {
2055                         *tl = txdr_unsigned(NFSCREATE_EXCLUSIVE);
2056                         NFSM_BUILD(tl, u_int32_t *, NFSX_VERF);
2057                         *tl++ = cverf.lval[0];
2058                         *tl = cverf.lval[1];
2059                 } else {
2060                         *tl = txdr_unsigned(NFSCREATE_UNCHECKED);
2061                         nfscl_fillsattr(nd, vap, dvp, 0, 0);
2062                 }
2063         } else {
2064                 nfscl_fillsattr(nd, vap, dvp, NFSSATTR_SIZE0, 0);
2065         }
2066         error = nfscl_request(nd, dvp, p, cred, dstuff);
2067         if (error)
2068                 return (error);
2069         if (nd->nd_repstat == 0) {
2070                 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp);
2071                 if (error)
2072                         goto nfsmout;
2073         }
2074         if (nd->nd_flag & ND_NFSV3)
2075                 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff);
2076         if (nd->nd_repstat != 0 && error == 0)
2077                 error = nd->nd_repstat;
2078 nfsmout:
2079         mbuf_freem(nd->nd_mrep);
2080         return (error);
2081 }
2082
2083 static int
2084 nfsrpc_createv4(vnode_t dvp, char *name, int namelen, struct vattr *vap,
2085     nfsquad_t cverf, int fmode, struct nfsclowner *owp, struct nfscldeleg **dpp,
2086     struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap,
2087     struct nfsvattr *nnap, struct nfsfh **nfhpp, int *attrflagp,
2088     int *dattrflagp, void *dstuff, int *unlockedp)
2089 {
2090         u_int32_t *tl;
2091         int error = 0, deleg, newone, ret, acesize, limitby;
2092         struct nfsrv_descript nfsd, *nd = &nfsd;
2093         struct nfsclopen *op;
2094         struct nfscldeleg *dp = NULL;
2095         struct nfsnode *np;
2096         struct nfsfh *nfhp;
2097         nfsattrbit_t attrbits;
2098         nfsv4stateid_t stateid;
2099         u_int32_t rflags;
2100         struct nfsmount *nmp;
2101         struct nfsclsession *tsep;
2102
2103         nmp = VFSTONFS(dvp->v_mount);
2104         np = VTONFS(dvp);
2105         *unlockedp = 0;
2106         *nfhpp = NULL;
2107         *dpp = NULL;
2108         *attrflagp = 0;
2109         *dattrflagp = 0;
2110         if (namelen > NFS_MAXNAMLEN)
2111                 return (ENAMETOOLONG);
2112         NFSCL_REQSTART(nd, NFSPROC_CREATE, dvp);
2113         /*
2114          * For V4, this is actually an Open op.
2115          */
2116         NFSM_BUILD(tl, u_int32_t *, 5 * NFSX_UNSIGNED);
2117         *tl++ = txdr_unsigned(owp->nfsow_seqid);
2118         *tl++ = txdr_unsigned(NFSV4OPEN_ACCESSWRITE |
2119             NFSV4OPEN_ACCESSREAD);
2120         *tl++ = txdr_unsigned(NFSV4OPEN_DENYNONE);
2121         tsep = nfsmnt_mdssession(nmp);
2122         *tl++ = tsep->nfsess_clientid.lval[0];
2123         *tl = tsep->nfsess_clientid.lval[1];
2124         (void) nfsm_strtom(nd, owp->nfsow_owner, NFSV4CL_LOCKNAMELEN);
2125         NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
2126         *tl++ = txdr_unsigned(NFSV4OPEN_CREATE);
2127         if (fmode & O_EXCL) {
2128                 if (NFSHASNFSV4N(nmp)) {
2129                         if (NFSHASSESSPERSIST(nmp)) {
2130                                 /* Use GUARDED for persistent sessions. */
2131                                 *tl = txdr_unsigned(NFSCREATE_GUARDED);
2132                                 nfscl_fillsattr(nd, vap, dvp, 0, 0);
2133                         } else {
2134                                 /* Otherwise, use EXCLUSIVE4_1. */
2135                                 *tl = txdr_unsigned(NFSCREATE_EXCLUSIVE41);
2136                                 NFSM_BUILD(tl, u_int32_t *, NFSX_VERF);
2137                                 *tl++ = cverf.lval[0];
2138                                 *tl = cverf.lval[1];
2139                                 nfscl_fillsattr(nd, vap, dvp, 0, 0);
2140                         }
2141                 } else {
2142                         /* NFSv4.0 */
2143                         *tl = txdr_unsigned(NFSCREATE_EXCLUSIVE);
2144                         NFSM_BUILD(tl, u_int32_t *, NFSX_VERF);
2145                         *tl++ = cverf.lval[0];
2146                         *tl = cverf.lval[1];
2147                 }
2148         } else {
2149                 *tl = txdr_unsigned(NFSCREATE_UNCHECKED);
2150                 nfscl_fillsattr(nd, vap, dvp, 0, 0);
2151         }
2152         NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
2153         *tl = txdr_unsigned(NFSV4OPEN_CLAIMNULL);
2154         (void) nfsm_strtom(nd, name, namelen);
2155         /* Get the new file's handle and attributes. */
2156         NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
2157         *tl++ = txdr_unsigned(NFSV4OP_GETFH);
2158         *tl = txdr_unsigned(NFSV4OP_GETATTR);
2159         NFSGETATTR_ATTRBIT(&attrbits);
2160         (void) nfsrv_putattrbit(nd, &attrbits);
2161         /* Get the directory's post-op attributes. */
2162         NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
2163         *tl = txdr_unsigned(NFSV4OP_PUTFH);
2164         (void) nfsm_fhtom(nd, np->n_fhp->nfh_fh, np->n_fhp->nfh_len, 0);
2165         NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
2166         *tl = txdr_unsigned(NFSV4OP_GETATTR);
2167         (void) nfsrv_putattrbit(nd, &attrbits);
2168         error = nfscl_request(nd, dvp, p, cred, dstuff);
2169         if (error)
2170                 return (error);
2171         NFSCL_INCRSEQID(owp->nfsow_seqid, nd);
2172         if (nd->nd_repstat == 0) {
2173                 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID +
2174                     6 * NFSX_UNSIGNED);
2175                 stateid.seqid = *tl++;
2176                 stateid.other[0] = *tl++;
2177                 stateid.other[1] = *tl++;
2178                 stateid.other[2] = *tl;
2179                 rflags = fxdr_unsigned(u_int32_t, *(tl + 6));
2180                 (void) nfsrv_getattrbits(nd, &attrbits, NULL, NULL);
2181                 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
2182                 deleg = fxdr_unsigned(int, *tl);
2183                 if (deleg == NFSV4OPEN_DELEGATEREAD ||
2184                     deleg == NFSV4OPEN_DELEGATEWRITE) {
2185                         if (!(owp->nfsow_clp->nfsc_flags &
2186                               NFSCLFLAGS_FIRSTDELEG))
2187                                 owp->nfsow_clp->nfsc_flags |=
2188                                   (NFSCLFLAGS_FIRSTDELEG | NFSCLFLAGS_GOTDELEG);
2189                         dp = malloc(
2190                             sizeof (struct nfscldeleg) + NFSX_V4FHMAX,
2191                             M_NFSCLDELEG, M_WAITOK);
2192                         LIST_INIT(&dp->nfsdl_owner);
2193                         LIST_INIT(&dp->nfsdl_lock);
2194                         dp->nfsdl_clp = owp->nfsow_clp;
2195                         newnfs_copyincred(cred, &dp->nfsdl_cred);
2196                         nfscl_lockinit(&dp->nfsdl_rwlock);
2197                         NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID +
2198                             NFSX_UNSIGNED);
2199                         dp->nfsdl_stateid.seqid = *tl++;
2200                         dp->nfsdl_stateid.other[0] = *tl++;
2201                         dp->nfsdl_stateid.other[1] = *tl++;
2202                         dp->nfsdl_stateid.other[2] = *tl++;
2203                         ret = fxdr_unsigned(int, *tl);
2204                         if (deleg == NFSV4OPEN_DELEGATEWRITE) {
2205                                 dp->nfsdl_flags = NFSCLDL_WRITE;
2206                                 /*
2207                                  * Indicates how much the file can grow.
2208                                  */
2209                                 NFSM_DISSECT(tl, u_int32_t *,
2210                                     3 * NFSX_UNSIGNED);
2211                                 limitby = fxdr_unsigned(int, *tl++);
2212                                 switch (limitby) {
2213                                 case NFSV4OPEN_LIMITSIZE:
2214                                         dp->nfsdl_sizelimit = fxdr_hyper(tl);
2215                                         break;
2216                                 case NFSV4OPEN_LIMITBLOCKS:
2217                                         dp->nfsdl_sizelimit =
2218                                             fxdr_unsigned(u_int64_t, *tl++);
2219                                         dp->nfsdl_sizelimit *=
2220                                             fxdr_unsigned(u_int64_t, *tl);
2221                                         break;
2222                                 default:
2223                                         error = NFSERR_BADXDR;
2224                                         goto nfsmout;
2225                                 }
2226                         } else {
2227                                 dp->nfsdl_flags = NFSCLDL_READ;
2228                         }
2229                         if (ret)
2230                                 dp->nfsdl_flags |= NFSCLDL_RECALL;
2231                         error = nfsrv_dissectace(nd, &dp->nfsdl_ace, &ret,
2232                             &acesize, p);
2233                         if (error)
2234                                 goto nfsmout;
2235                 } else if (deleg != NFSV4OPEN_DELEGATENONE) {
2236                         error = NFSERR_BADXDR;
2237                         goto nfsmout;
2238                 }
2239                 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp);
2240                 if (error)
2241                         goto nfsmout;
2242                 /* Get rid of the PutFH and Getattr status values. */
2243                 NFSM_DISSECT(tl, u_int32_t *, 4 * NFSX_UNSIGNED);
2244                 /* Load the directory attributes. */
2245                 error = nfsm_loadattr(nd, dnap);
2246                 if (error)
2247                         goto nfsmout;
2248                 *dattrflagp = 1;
2249                 if (dp != NULL && *attrflagp) {
2250                         dp->nfsdl_change = nnap->na_filerev;
2251                         dp->nfsdl_modtime = nnap->na_mtime;
2252                         dp->nfsdl_flags |= NFSCLDL_MODTIMESET;
2253                 }
2254                 /*
2255                  * We can now complete the Open state.
2256                  */
2257                 nfhp = *nfhpp;
2258                 if (dp != NULL) {
2259                         dp->nfsdl_fhlen = nfhp->nfh_len;
2260                         NFSBCOPY(nfhp->nfh_fh, dp->nfsdl_fh, nfhp->nfh_len);
2261                 }
2262                 /*
2263                  * Get an Open structure that will be
2264                  * attached to the OpenOwner, acquired already.
2265                  */
2266                 error = nfscl_open(dvp, nfhp->nfh_fh, nfhp->nfh_len,
2267                     (NFSV4OPEN_ACCESSWRITE | NFSV4OPEN_ACCESSREAD), 0,
2268                     cred, p, NULL, &op, &newone, NULL, 0);
2269                 if (error)
2270                         goto nfsmout;
2271                 op->nfso_stateid = stateid;
2272                 newnfs_copyincred(cred, &op->nfso_cred);
2273                 if ((rflags & NFSV4OPEN_RESULTCONFIRM)) {
2274                     do {
2275                         ret = nfsrpc_openconfirm(dvp, nfhp->nfh_fh,
2276                             nfhp->nfh_len, op, cred, p);
2277                         if (ret == NFSERR_DELAY)
2278                             (void) nfs_catnap(PZERO, ret, "nfs_create");
2279                     } while (ret == NFSERR_DELAY);
2280                     error = ret;
2281                 }
2282
2283                 /*
2284                  * If the server is handing out delegations, but we didn't
2285                  * get one because an OpenConfirm was required, try the
2286                  * Open again, to get a delegation. This is a harmless no-op,
2287                  * from a server's point of view.
2288                  */
2289                 if ((rflags & NFSV4OPEN_RESULTCONFIRM) &&
2290                     (owp->nfsow_clp->nfsc_flags & NFSCLFLAGS_GOTDELEG) &&
2291                     !error && dp == NULL) {
2292                     do {
2293                         ret = nfsrpc_openrpc(VFSTONFS(vnode_mount(dvp)), dvp,
2294                             np->n_fhp->nfh_fh, np->n_fhp->nfh_len,
2295                             nfhp->nfh_fh, nfhp->nfh_len,
2296                             (NFSV4OPEN_ACCESSWRITE | NFSV4OPEN_ACCESSREAD), op,
2297                             name, namelen, &dp, 0, 0x0, cred, p, 0, 1);
2298                         if (ret == NFSERR_DELAY)
2299                             (void) nfs_catnap(PZERO, ret, "nfs_crt2");
2300                     } while (ret == NFSERR_DELAY);
2301                     if (ret) {
2302                         if (dp != NULL) {
2303                                 free(dp, M_NFSCLDELEG);
2304                                 dp = NULL;
2305                         }
2306                         if (ret == NFSERR_STALECLIENTID ||
2307                             ret == NFSERR_STALEDONTRECOVER ||
2308                             ret == NFSERR_BADSESSION)
2309                                 error = ret;
2310                     }
2311                 }
2312                 nfscl_openrelease(nmp, op, error, newone);
2313                 *unlockedp = 1;
2314         }
2315         if (nd->nd_repstat != 0 && error == 0)
2316                 error = nd->nd_repstat;
2317         if (error == NFSERR_STALECLIENTID)
2318                 nfscl_initiate_recovery(owp->nfsow_clp);
2319 nfsmout:
2320         if (!error)
2321                 *dpp = dp;
2322         else if (dp != NULL)
2323                 free(dp, M_NFSCLDELEG);
2324         mbuf_freem(nd->nd_mrep);
2325         return (error);
2326 }
2327
2328 /*
2329  * Nfs remove rpc
2330  */
2331 APPLESTATIC int
2332 nfsrpc_remove(vnode_t dvp, char *name, int namelen, vnode_t vp,
2333     struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap, int *dattrflagp,
2334     void *dstuff)
2335 {
2336         u_int32_t *tl;
2337         struct nfsrv_descript nfsd, *nd = &nfsd;
2338         struct nfsnode *np;
2339         struct nfsmount *nmp;
2340         nfsv4stateid_t dstateid;
2341         int error, ret = 0, i;
2342
2343         *dattrflagp = 0;
2344         if (namelen > NFS_MAXNAMLEN)
2345                 return (ENAMETOOLONG);
2346         nmp = VFSTONFS(vnode_mount(dvp));
2347 tryagain:
2348         if (NFSHASNFSV4(nmp) && ret == 0) {
2349                 ret = nfscl_removedeleg(vp, p, &dstateid);
2350                 if (ret == 1) {
2351                         NFSCL_REQSTART(nd, NFSPROC_RETDELEGREMOVE, vp);
2352                         NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID +
2353                             NFSX_UNSIGNED);
2354                         if (NFSHASNFSV4N(nmp))
2355                                 *tl++ = 0;
2356                         else
2357                                 *tl++ = dstateid.seqid;
2358                         *tl++ = dstateid.other[0];
2359                         *tl++ = dstateid.other[1];
2360                         *tl++ = dstateid.other[2];
2361                         *tl = txdr_unsigned(NFSV4OP_PUTFH);
2362                         np = VTONFS(dvp);
2363                         (void) nfsm_fhtom(nd, np->n_fhp->nfh_fh,
2364                             np->n_fhp->nfh_len, 0);
2365                         NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
2366                         *tl = txdr_unsigned(NFSV4OP_REMOVE);
2367                 }
2368         } else {
2369                 ret = 0;
2370         }
2371         if (ret == 0)
2372                 NFSCL_REQSTART(nd, NFSPROC_REMOVE, dvp);
2373         (void) nfsm_strtom(nd, name, namelen);
2374         error = nfscl_request(nd, dvp, p, cred, dstuff);
2375         if (error)
2376                 return (error);
2377         if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) {
2378                 /* For NFSv4, parse out any Delereturn replies. */
2379                 if (ret > 0 && nd->nd_repstat != 0 &&
2380                     (nd->nd_flag & ND_NOMOREDATA)) {
2381                         /*
2382                          * If the Delegreturn failed, try again without
2383                          * it. The server will Recall, as required.
2384                          */
2385                         mbuf_freem(nd->nd_mrep);
2386                         goto tryagain;
2387                 }
2388                 for (i = 0; i < (ret * 2); i++) {
2389                         if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) ==
2390                             ND_NFSV4) {
2391                             NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
2392                             if (*(tl + 1))
2393                                 nd->nd_flag |= ND_NOMOREDATA;
2394                         }
2395                 }
2396                 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff);
2397         }
2398         if (nd->nd_repstat && !error)
2399                 error = nd->nd_repstat;
2400 nfsmout:
2401         mbuf_freem(nd->nd_mrep);
2402         return (error);
2403 }
2404
2405 /*
2406  * Do an nfs rename rpc.
2407  */
2408 APPLESTATIC int
2409 nfsrpc_rename(vnode_t fdvp, vnode_t fvp, char *fnameptr, int fnamelen,
2410     vnode_t tdvp, vnode_t tvp, char *tnameptr, int tnamelen, struct ucred *cred,
2411     NFSPROC_T *p, struct nfsvattr *fnap, struct nfsvattr *tnap,
2412     int *fattrflagp, int *tattrflagp, void *fstuff, void *tstuff)
2413 {
2414         u_int32_t *tl;
2415         struct nfsrv_descript nfsd, *nd = &nfsd;
2416         struct nfsmount *nmp;
2417         struct nfsnode *np;
2418         nfsattrbit_t attrbits;
2419         nfsv4stateid_t fdstateid, tdstateid;
2420         int error = 0, ret = 0, gottd = 0, gotfd = 0, i;
2421
2422         *fattrflagp = 0;
2423         *tattrflagp = 0;
2424         nmp = VFSTONFS(vnode_mount(fdvp));
2425         if (fnamelen > NFS_MAXNAMLEN || tnamelen > NFS_MAXNAMLEN)
2426                 return (ENAMETOOLONG);
2427 tryagain:
2428         if (NFSHASNFSV4(nmp) && ret == 0) {
2429                 ret = nfscl_renamedeleg(fvp, &fdstateid, &gotfd, tvp,
2430                     &tdstateid, &gottd, p);
2431                 if (gotfd && gottd) {
2432                         NFSCL_REQSTART(nd, NFSPROC_RETDELEGRENAME2, fvp);
2433                 } else if (gotfd) {
2434                         NFSCL_REQSTART(nd, NFSPROC_RETDELEGRENAME1, fvp);
2435                 } else if (gottd) {
2436                         NFSCL_REQSTART(nd, NFSPROC_RETDELEGRENAME1, tvp);
2437                 }
2438                 if (gotfd) {
2439                         NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID);
2440                         if (NFSHASNFSV4N(nmp))
2441                                 *tl++ = 0;
2442                         else
2443                                 *tl++ = fdstateid.seqid;
2444                         *tl++ = fdstateid.other[0];
2445                         *tl++ = fdstateid.other[1];
2446                         *tl = fdstateid.other[2];
2447                         if (gottd) {
2448                                 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
2449                                 *tl = txdr_unsigned(NFSV4OP_PUTFH);
2450                                 np = VTONFS(tvp);
2451                                 (void) nfsm_fhtom(nd, np->n_fhp->nfh_fh,
2452                                     np->n_fhp->nfh_len, 0);
2453                                 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
2454                                 *tl = txdr_unsigned(NFSV4OP_DELEGRETURN);
2455                         }
2456                 }
2457                 if (gottd) {
2458                         NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID);
2459                         if (NFSHASNFSV4N(nmp))
2460                                 *tl++ = 0;
2461                         else
2462                                 *tl++ = tdstateid.seqid;
2463                         *tl++ = tdstateid.other[0];
2464                         *tl++ = tdstateid.other[1];
2465                         *tl = tdstateid.other[2];
2466                 }
2467                 if (ret > 0) {
2468                         NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
2469                         *tl = txdr_unsigned(NFSV4OP_PUTFH);
2470                         np = VTONFS(fdvp);
2471                         (void) nfsm_fhtom(nd, np->n_fhp->nfh_fh,
2472                             np->n_fhp->nfh_len, 0);
2473                         NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
2474                         *tl = txdr_unsigned(NFSV4OP_SAVEFH);
2475                 }
2476         } else {
2477                 ret = 0;
2478         }
2479         if (ret == 0)
2480                 NFSCL_REQSTART(nd, NFSPROC_RENAME, fdvp);
2481         if (nd->nd_flag & ND_NFSV4) {
2482                 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
2483                 *tl = txdr_unsigned(NFSV4OP_GETATTR);
2484                 NFSWCCATTR_ATTRBIT(&attrbits);
2485                 (void) nfsrv_putattrbit(nd, &attrbits);
2486                 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
2487                 *tl = txdr_unsigned(NFSV4OP_PUTFH);
2488                 (void) nfsm_fhtom(nd, VTONFS(tdvp)->n_fhp->nfh_fh,
2489                     VTONFS(tdvp)->n_fhp->nfh_len, 0);
2490                 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
2491                 *tl = txdr_unsigned(NFSV4OP_GETATTR);
2492                 (void) nfsrv_putattrbit(nd, &attrbits);
2493                 nd->nd_flag |= ND_V4WCCATTR;
2494                 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
2495                 *tl = txdr_unsigned(NFSV4OP_RENAME);
2496         }
2497         (void) nfsm_strtom(nd, fnameptr, fnamelen);
2498         if (!(nd->nd_flag & ND_NFSV4))
2499                 (void) nfsm_fhtom(nd, VTONFS(tdvp)->n_fhp->nfh_fh,
2500                         VTONFS(tdvp)->n_fhp->nfh_len, 0);
2501         (void) nfsm_strtom(nd, tnameptr, tnamelen);
2502         error = nfscl_request(nd, fdvp, p, cred, fstuff);
2503         if (error)
2504                 return (error);
2505         if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) {
2506                 /* For NFSv4, parse out any Delereturn replies. */
2507                 if (ret > 0 && nd->nd_repstat != 0 &&
2508                     (nd->nd_flag & ND_NOMOREDATA)) {
2509                         /*
2510                          * If the Delegreturn failed, try again without
2511                          * it. The server will Recall, as required.
2512                          */
2513                         mbuf_freem(nd->nd_mrep);
2514                         goto tryagain;
2515                 }
2516                 for (i = 0; i < (ret * 2); i++) {
2517                         if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) ==
2518                             ND_NFSV4) {
2519                             NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
2520                             if (*(tl + 1)) {
2521                                 if (i == 0 && ret > 1) {
2522                                     /*
2523                                      * If the Delegreturn failed, try again
2524                                      * without it. The server will Recall, as
2525                                      * required.
2526                                      * If ret > 1, the first iteration of this
2527                                      * loop is the second DelegReturn result.
2528                                      */
2529                                     mbuf_freem(nd->nd_mrep);
2530                                     goto tryagain;
2531                                 } else {
2532                                     nd->nd_flag |= ND_NOMOREDATA;
2533                                 }
2534                             }
2535                         }
2536                 }
2537                 /* Now, the first wcc attribute reply. */
2538                 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == ND_NFSV4) {
2539                         NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
2540                         if (*(tl + 1))
2541                                 nd->nd_flag |= ND_NOMOREDATA;
2542                 }
2543                 error = nfscl_wcc_data(nd, fdvp, fnap, fattrflagp, NULL,
2544                     fstuff);
2545                 /* and the second wcc attribute reply. */
2546                 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == ND_NFSV4 &&
2547                     !error) {
2548                         NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
2549                         if (*(tl + 1))
2550                                 nd->nd_flag |= ND_NOMOREDATA;
2551                 }
2552                 if (!error)
2553                         error = nfscl_wcc_data(nd, tdvp, tnap, tattrflagp,
2554                             NULL, tstuff);
2555         }
2556         if (nd->nd_repstat && !error)
2557                 error = nd->nd_repstat;
2558 nfsmout:
2559         mbuf_freem(nd->nd_mrep);
2560         return (error);
2561 }
2562
2563 /*
2564  * nfs hard link create rpc
2565  */
2566 APPLESTATIC int
2567 nfsrpc_link(vnode_t dvp, vnode_t vp, char *name, int namelen,
2568     struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap,
2569     struct nfsvattr *nap, int *attrflagp, int *dattrflagp, void *dstuff)
2570 {
2571         u_int32_t *tl;
2572         struct nfsrv_descript nfsd, *nd = &nfsd;
2573         nfsattrbit_t attrbits;
2574         int error = 0;
2575
2576         *attrflagp = 0;
2577         *dattrflagp = 0;
2578         if (namelen > NFS_MAXNAMLEN)
2579                 return (ENAMETOOLONG);
2580         NFSCL_REQSTART(nd, NFSPROC_LINK, vp);
2581         if (nd->nd_flag & ND_NFSV4) {
2582                 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
2583                 *tl = txdr_unsigned(NFSV4OP_PUTFH);
2584         }
2585         (void) nfsm_fhtom(nd, VTONFS(dvp)->n_fhp->nfh_fh,
2586                 VTONFS(dvp)->n_fhp->nfh_len, 0);
2587         if (nd->nd_flag & ND_NFSV4) {
2588                 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
2589                 *tl = txdr_unsigned(NFSV4OP_GETATTR);
2590                 NFSWCCATTR_ATTRBIT(&attrbits);
2591                 (void) nfsrv_putattrbit(nd, &attrbits);
2592                 nd->nd_flag |= ND_V4WCCATTR;
2593                 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
2594                 *tl = txdr_unsigned(NFSV4OP_LINK);
2595         }
2596         (void) nfsm_strtom(nd, name, namelen);
2597         error = nfscl_request(nd, vp, p, cred, dstuff);
2598         if (error)
2599                 return (error);
2600         if (nd->nd_flag & ND_NFSV3) {
2601                 error = nfscl_postop_attr(nd, nap, attrflagp, dstuff);
2602                 if (!error)
2603                         error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp,
2604                             NULL, dstuff);
2605         } else if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == ND_NFSV4) {
2606                 /*
2607                  * First, parse out the PutFH and Getattr result.
2608                  */
2609                 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
2610                 if (!(*(tl + 1)))
2611                         NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
2612                 if (*(tl + 1))
2613                         nd->nd_flag |= ND_NOMOREDATA;
2614                 /*
2615                  * Get the pre-op attributes.
2616                  */
2617                 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff);
2618         }
2619         if (nd->nd_repstat && !error)
2620                 error = nd->nd_repstat;
2621 nfsmout:
2622         mbuf_freem(nd->nd_mrep);
2623         return (error);
2624 }
2625
2626 /*
2627  * nfs symbolic link create rpc
2628  */
2629 APPLESTATIC int
2630 nfsrpc_symlink(vnode_t dvp, char *name, int namelen, const char *target,
2631     struct vattr *vap, struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap,
2632     struct nfsvattr *nnap, struct nfsfh **nfhpp, int *attrflagp,
2633     int *dattrflagp, void *dstuff)
2634 {
2635         u_int32_t *tl;
2636         struct nfsrv_descript nfsd, *nd = &nfsd;
2637         struct nfsmount *nmp;
2638         int slen, error = 0;
2639
2640         *nfhpp = NULL;
2641         *attrflagp = 0;
2642         *dattrflagp = 0;
2643         nmp = VFSTONFS(vnode_mount(dvp));
2644         slen = strlen(target);
2645         if (slen > NFS_MAXPATHLEN || namelen > NFS_MAXNAMLEN)
2646                 return (ENAMETOOLONG);
2647         NFSCL_REQSTART(nd, NFSPROC_SYMLINK, dvp);
2648         if (nd->nd_flag & ND_NFSV4) {
2649                 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
2650                 *tl = txdr_unsigned(NFLNK);
2651                 (void) nfsm_strtom(nd, target, slen);
2652         }
2653         (void) nfsm_strtom(nd, name, namelen);
2654         if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4))
2655                 nfscl_fillsattr(nd, vap, dvp, 0, 0);
2656         if (!(nd->nd_flag & ND_NFSV4))
2657                 (void) nfsm_strtom(nd, target, slen);
2658         if (nd->nd_flag & ND_NFSV2)
2659                 nfscl_fillsattr(nd, vap, dvp, NFSSATTR_SIZENEG1, 0);
2660         error = nfscl_request(nd, dvp, p, cred, dstuff);
2661         if (error)
2662                 return (error);
2663         if (nd->nd_flag & ND_NFSV4)
2664                 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff);
2665         if ((nd->nd_flag & ND_NFSV3) && !error) {
2666                 if (!nd->nd_repstat)
2667                         error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp);
2668                 if (!error)
2669                         error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp,
2670                             NULL, dstuff);
2671         }
2672         if (nd->nd_repstat && !error)
2673                 error = nd->nd_repstat;
2674         mbuf_freem(nd->nd_mrep);
2675         /*
2676          * Kludge: Map EEXIST => 0 assuming that it is a reply to a retry.
2677          * Only do this if vfs.nfs.ignore_eexist is set.
2678          * Never do this for NFSv4.1 or later minor versions, since sessions
2679          * should guarantee "exactly once" RPC semantics.
2680          */
2681         if (error == EEXIST && nfsignore_eexist != 0 && (!NFSHASNFSV4(nmp) ||
2682             nmp->nm_minorvers == 0))
2683                 error = 0;
2684         return (error);
2685 }
2686
2687 /*
2688  * nfs make dir rpc
2689  */
2690 APPLESTATIC int
2691 nfsrpc_mkdir(vnode_t dvp, char *name, int namelen, struct vattr *vap,
2692     struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap,
2693     struct nfsvattr *nnap, struct nfsfh **nfhpp, int *attrflagp,
2694     int *dattrflagp, void *dstuff)
2695 {
2696         u_int32_t *tl;
2697         struct nfsrv_descript nfsd, *nd = &nfsd;
2698         nfsattrbit_t attrbits;
2699         int error = 0;
2700         struct nfsfh *fhp;
2701         struct nfsmount *nmp;
2702
2703         *nfhpp = NULL;
2704         *attrflagp = 0;
2705         *dattrflagp = 0;
2706         nmp = VFSTONFS(vnode_mount(dvp));
2707         fhp = VTONFS(dvp)->n_fhp;
2708         if (namelen > NFS_MAXNAMLEN)
2709                 return (ENAMETOOLONG);
2710         NFSCL_REQSTART(nd, NFSPROC_MKDIR, dvp);
2711         if (nd->nd_flag & ND_NFSV4) {
2712                 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
2713                 *tl = txdr_unsigned(NFDIR);
2714         }
2715         (void) nfsm_strtom(nd, name, namelen);
2716         nfscl_fillsattr(nd, vap, dvp, NFSSATTR_SIZENEG1, 0);
2717         if (nd->nd_flag & ND_NFSV4) {
2718                 NFSGETATTR_ATTRBIT(&attrbits);
2719                 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
2720                 *tl++ = txdr_unsigned(NFSV4OP_GETFH);
2721                 *tl = txdr_unsigned(NFSV4OP_GETATTR);
2722                 (void) nfsrv_putattrbit(nd, &attrbits);
2723                 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
2724                 *tl = txdr_unsigned(NFSV4OP_PUTFH);
2725                 (void) nfsm_fhtom(nd, fhp->nfh_fh, fhp->nfh_len, 0);
2726                 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
2727                 *tl = txdr_unsigned(NFSV4OP_GETATTR);
2728                 (void) nfsrv_putattrbit(nd, &attrbits);
2729         }
2730         error = nfscl_request(nd, dvp, p, cred, dstuff);
2731         if (error)
2732                 return (error);
2733         if (nd->nd_flag & ND_NFSV4)
2734                 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff);
2735         if (!nd->nd_repstat && !error) {
2736                 if (nd->nd_flag & ND_NFSV4) {
2737                         NFSM_DISSECT(tl, u_int32_t *, 5 * NFSX_UNSIGNED);
2738                         error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL);
2739                 }
2740                 if (!error)
2741                         error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp);
2742                 if (error == 0 && (nd->nd_flag & ND_NFSV4) != 0) {
2743                         /* Get rid of the PutFH and Getattr status values. */
2744                         NFSM_DISSECT(tl, u_int32_t *, 4 * NFSX_UNSIGNED);
2745                         /* Load the directory attributes. */
2746                         error = nfsm_loadattr(nd, dnap);
2747                         if (error == 0)
2748                                 *dattrflagp = 1;
2749                 }
2750         }
2751         if ((nd->nd_flag & ND_NFSV3) && !error)
2752                 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff);
2753         if (nd->nd_repstat && !error)
2754                 error = nd->nd_repstat;
2755 nfsmout:
2756         mbuf_freem(nd->nd_mrep);
2757         /*
2758          * Kludge: Map EEXIST => 0 assuming that it is a reply to a retry.
2759          * Only do this if vfs.nfs.ignore_eexist is set.
2760          * Never do this for NFSv4.1 or later minor versions, since sessions
2761          * should guarantee "exactly once" RPC semantics.
2762          */
2763         if (error == EEXIST && nfsignore_eexist != 0 && (!NFSHASNFSV4(nmp) ||
2764             nmp->nm_minorvers == 0))
2765                 error = 0;
2766         return (error);
2767 }
2768
2769 /*
2770  * nfs remove directory call
2771  */
2772 APPLESTATIC int
2773 nfsrpc_rmdir(vnode_t dvp, char *name, int namelen, struct ucred *cred,
2774     NFSPROC_T *p, struct nfsvattr *dnap, int *dattrflagp, void *dstuff)
2775 {
2776         struct nfsrv_descript nfsd, *nd = &nfsd;
2777         int error = 0;
2778
2779         *dattrflagp = 0;
2780         if (namelen > NFS_MAXNAMLEN)
2781                 return (ENAMETOOLONG);
2782         NFSCL_REQSTART(nd, NFSPROC_RMDIR, dvp);
2783         (void) nfsm_strtom(nd, name, namelen);
2784         error = nfscl_request(nd, dvp, p, cred, dstuff);
2785         if (error)
2786                 return (error);
2787         if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4))
2788                 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff);
2789         if (nd->nd_repstat && !error)
2790                 error = nd->nd_repstat;
2791         mbuf_freem(nd->nd_mrep);
2792         /*
2793          * Kludge: Map ENOENT => 0 assuming that you have a reply to a retry.
2794          */
2795         if (error == ENOENT)
2796                 error = 0;
2797         return (error);
2798 }
2799
2800 /*
2801  * Readdir rpc.
2802  * Always returns with either uio_resid unchanged, if you are at the
2803  * end of the directory, or uio_resid == 0, with all DIRBLKSIZ chunks
2804  * filled in.
2805  * I felt this would allow caching of directory blocks more easily
2806  * than returning a pertially filled block.
2807  * Directory offset cookies:
2808  * Oh my, what to do with them...
2809  * I can think of three ways to deal with them:
2810  * 1 - have the layer above these RPCs maintain a map between logical
2811  *     directory byte offsets and the NFS directory offset cookies
2812  * 2 - pass the opaque directory offset cookies up into userland
2813  *     and let the libc functions deal with them, via the system call
2814  * 3 - return them to userland in the "struct dirent", so future versions
2815  *     of libc can use them and do whatever is necessary to make things work
2816  *     above these rpc calls, in the meantime
2817  * For now, I do #3 by "hiding" the directory offset cookies after the
2818  * d_name field in struct dirent. This is space inside d_reclen that
2819  * will be ignored by anything that doesn't know about them.
2820  * The directory offset cookies are filled in as the last 8 bytes of
2821  * each directory entry, after d_name. Someday, the userland libc
2822  * functions may be able to use these. In the meantime, it satisfies
2823  * OpenBSD's requirements for cookies being returned.
2824  * If expects the directory offset cookie for the read to be in uio_offset
2825  * and returns the one for the next entry after this directory block in
2826  * there, as well.
2827  */
2828 APPLESTATIC int
2829 nfsrpc_readdir(vnode_t vp, struct uio *uiop, nfsuint64 *cookiep,
2830     struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp,
2831     int *eofp, void *stuff)
2832 {
2833         int len, left;
2834         struct dirent *dp = NULL;
2835         u_int32_t *tl;
2836         nfsquad_t cookie, ncookie;
2837         struct nfsmount *nmp = VFSTONFS(vnode_mount(vp));
2838         struct nfsnode *dnp = VTONFS(vp);
2839         struct nfsvattr nfsva;
2840         struct nfsrv_descript nfsd, *nd = &nfsd;
2841         int error = 0, tlen, more_dirs = 1, blksiz = 0, bigenough = 1;
2842         int reqsize, tryformoredirs = 1, readsize, eof = 0, gotmnton = 0;
2843         u_int64_t dotfileid, dotdotfileid = 0, fakefileno = UINT64_MAX;
2844         char *cp;
2845         nfsattrbit_t attrbits, dattrbits;
2846         u_int32_t rderr, *tl2 = NULL;
2847         size_t tresid;
2848
2849         KASSERT(uiop->uio_iovcnt == 1 &&
2850             (uio_uio_resid(uiop) & (DIRBLKSIZ - 1)) == 0,
2851             ("nfs readdirrpc bad uio"));
2852         ncookie.lval[0] = ncookie.lval[1] = 0;
2853         /*
2854          * There is no point in reading a lot more than uio_resid, however
2855          * adding one additional DIRBLKSIZ makes sense. Since uio_resid
2856          * and nm_readdirsize are both exact multiples of DIRBLKSIZ, this
2857          * will never make readsize > nm_readdirsize.
2858          */
2859         readsize = nmp->nm_readdirsize;
2860         if (readsize > uio_uio_resid(uiop))
2861                 readsize = uio_uio_resid(uiop) + DIRBLKSIZ;
2862
2863         *attrflagp = 0;
2864         if (eofp)
2865                 *eofp = 0;
2866         tresid = uio_uio_resid(uiop);
2867         cookie.lval[0] = cookiep->nfsuquad[0];
2868         cookie.lval[1] = cookiep->nfsuquad[1];
2869         nd->nd_mrep = NULL;
2870
2871         /*
2872          * For NFSv4, first create the "." and ".." entries.
2873          */
2874         if (NFSHASNFSV4(nmp)) {
2875                 reqsize = 6 * NFSX_UNSIGNED;
2876                 NFSGETATTR_ATTRBIT(&dattrbits);
2877                 NFSZERO_ATTRBIT(&attrbits);
2878                 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_FILEID);
2879                 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_TYPE);
2880                 if (NFSISSET_ATTRBIT(&dnp->n_vattr.na_suppattr,
2881                     NFSATTRBIT_MOUNTEDONFILEID)) {
2882                         NFSSETBIT_ATTRBIT(&attrbits,
2883                             NFSATTRBIT_MOUNTEDONFILEID);
2884                         gotmnton = 1;
2885                 } else {
2886                         /*
2887                          * Must fake it. Use the fileno, except when the
2888                          * fsid is != to that of the directory. For that
2889                          * case, generate a fake fileno that is not the same.
2890                          */
2891                         NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_FSID);
2892                         gotmnton = 0;
2893                 }
2894
2895                 /*
2896                  * Joy, oh joy. For V4 we get to hand craft '.' and '..'.
2897                  */
2898                 if (uiop->uio_offset == 0) {
2899                         NFSCL_REQSTART(nd, NFSPROC_LOOKUPP, vp);
2900                         NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
2901                         *tl++ = txdr_unsigned(NFSV4OP_GETFH);
2902                         *tl = txdr_unsigned(NFSV4OP_GETATTR);
2903                         (void) nfsrv_putattrbit(nd, &attrbits);
2904                         error = nfscl_request(nd, vp, p, cred, stuff);
2905                         if (error)
2906                             return (error);
2907                         dotfileid = 0;  /* Fake out the compiler. */
2908                         if ((nd->nd_flag & ND_NOMOREDATA) == 0) {
2909                             error = nfsm_loadattr(nd, &nfsva);
2910                             if (error != 0)
2911                                 goto nfsmout;
2912                             dotfileid = nfsva.na_fileid;
2913                         }
2914                         if (nd->nd_repstat == 0) {
2915                             NFSM_DISSECT(tl, u_int32_t *, 5 * NFSX_UNSIGNED);
2916                             len = fxdr_unsigned(int, *(tl + 4));
2917                             if (len > 0 && len <= NFSX_V4FHMAX)
2918                                 error = nfsm_advance(nd, NFSM_RNDUP(len), -1);
2919                             else
2920                                 error = EPERM;
2921                             if (!error) {
2922                                 NFSM_DISSECT(tl, u_int32_t *, 2*NFSX_UNSIGNED);
2923                                 nfsva.na_mntonfileno = UINT64_MAX;
2924                                 error = nfsv4_loadattr(nd, NULL, &nfsva, NULL,
2925                                     NULL, 0, NULL, NULL, NULL, NULL, NULL, 0,
2926                                     NULL, NULL, NULL, p, cred);
2927                                 if (error) {
2928                                     dotdotfileid = dotfileid;
2929                                 } else if (gotmnton) {
2930                                     if (nfsva.na_mntonfileno != UINT64_MAX)
2931                                         dotdotfileid = nfsva.na_mntonfileno;
2932                                     else
2933                                         dotdotfileid = nfsva.na_fileid;
2934                                 } else if (nfsva.na_filesid[0] ==
2935                                     dnp->n_vattr.na_filesid[0] &&
2936                                     nfsva.na_filesid[1] ==
2937                                     dnp->n_vattr.na_filesid[1]) {
2938                                     dotdotfileid = nfsva.na_fileid;
2939                                 } else {
2940                                     do {
2941                                         fakefileno--;
2942                                     } while (fakefileno ==
2943                                         nfsva.na_fileid);
2944                                     dotdotfileid = fakefileno;
2945                                 }
2946                             }
2947                         } else if (nd->nd_repstat == NFSERR_NOENT) {
2948                             /*
2949                              * Lookupp returns NFSERR_NOENT when we are
2950                              * at the root, so just use the current dir.
2951                              */
2952                             nd->nd_repstat = 0;
2953                             dotdotfileid = dotfileid;
2954                         } else {
2955                             error = nd->nd_repstat;
2956                         }
2957                         mbuf_freem(nd->nd_mrep);
2958                         if (error)
2959                             return (error);
2960                         nd->nd_mrep = NULL;
2961                         dp = (struct dirent *)uio_iov_base(uiop);
2962                         dp->d_pad0 = dp->d_pad1 = 0;
2963                         dp->d_off = 0;
2964                         dp->d_type = DT_DIR;
2965                         dp->d_fileno = dotfileid;
2966                         dp->d_namlen = 1;
2967                         *((uint64_t *)dp->d_name) = 0;  /* Zero pad it. */
2968                         dp->d_name[0] = '.';
2969                         dp->d_reclen = _GENERIC_DIRSIZ(dp) + NFSX_HYPER;
2970                         /*
2971                          * Just make these offset cookie 0.
2972                          */
2973                         tl = (u_int32_t *)&dp->d_name[8];
2974                         *tl++ = 0;
2975                         *tl = 0;
2976                         blksiz += dp->d_reclen;
2977                         uio_uio_resid_add(uiop, -(dp->d_reclen));
2978                         uiop->uio_offset += dp->d_reclen;
2979                         uio_iov_base_add(uiop, dp->d_reclen);
2980                         uio_iov_len_add(uiop, -(dp->d_reclen));
2981                         dp = (struct dirent *)uio_iov_base(uiop);
2982                         dp->d_pad0 = dp->d_pad1 = 0;
2983                         dp->d_off = 0;
2984                         dp->d_type = DT_DIR;
2985                         dp->d_fileno = dotdotfileid;
2986                         dp->d_namlen = 2;
2987                         *((uint64_t *)dp->d_name) = 0;
2988                         dp->d_name[0] = '.';
2989                         dp->d_name[1] = '.';
2990                         dp->d_reclen = _GENERIC_DIRSIZ(dp) + NFSX_HYPER;
2991                         /*
2992                          * Just make these offset cookie 0.
2993                          */
2994                         tl = (u_int32_t *)&dp->d_name[8];
2995                         *tl++ = 0;
2996                         *tl = 0;
2997                         blksiz += dp->d_reclen;
2998                         uio_uio_resid_add(uiop, -(dp->d_reclen));
2999                         uiop->uio_offset += dp->d_reclen;
3000                         uio_iov_base_add(uiop, dp->d_reclen);
3001                         uio_iov_len_add(uiop, -(dp->d_reclen));
3002                 }
3003                 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_RDATTRERROR);
3004         } else {
3005                 reqsize = 5 * NFSX_UNSIGNED;
3006         }
3007
3008
3009         /*
3010          * Loop around doing readdir rpc's of size readsize.
3011          * The stopping criteria is EOF or buffer full.
3012          */
3013         while (more_dirs && bigenough) {
3014                 *attrflagp = 0;
3015                 NFSCL_REQSTART(nd, NFSPROC_READDIR, vp);
3016                 if (nd->nd_flag & ND_NFSV2) {
3017                         NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
3018                         *tl++ = cookie.lval[1];
3019                         *tl = txdr_unsigned(readsize);
3020                 } else {
3021                         NFSM_BUILD(tl, u_int32_t *, reqsize);
3022                         *tl++ = cookie.lval[0];
3023                         *tl++ = cookie.lval[1];
3024                         if (cookie.qval == 0) {
3025                                 *tl++ = 0;
3026                                 *tl++ = 0;
3027                         } else {
3028                                 NFSLOCKNODE(dnp);
3029                                 *tl++ = dnp->n_cookieverf.nfsuquad[0];
3030                                 *tl++ = dnp->n_cookieverf.nfsuquad[1];
3031                                 NFSUNLOCKNODE(dnp);
3032                         }
3033                         if (nd->nd_flag & ND_NFSV4) {
3034                                 *tl++ = txdr_unsigned(readsize);
3035                                 *tl = txdr_unsigned(readsize);
3036                                 (void) nfsrv_putattrbit(nd, &attrbits);
3037                                 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
3038                                 *tl = txdr_unsigned(NFSV4OP_GETATTR);
3039                                 (void) nfsrv_putattrbit(nd, &dattrbits);
3040                         } else {
3041                                 *tl = txdr_unsigned(readsize);
3042                         }
3043                 }
3044                 error = nfscl_request(nd, vp, p, cred, stuff);
3045                 if (error)
3046                         return (error);
3047                 if (!(nd->nd_flag & ND_NFSV2)) {
3048                         if (nd->nd_flag & ND_NFSV3)
3049                                 error = nfscl_postop_attr(nd, nap, attrflagp,
3050                                     stuff);
3051                         if (!nd->nd_repstat && !error) {
3052                                 NFSM_DISSECT(tl, u_int32_t *, NFSX_HYPER);
3053                                 NFSLOCKNODE(dnp);
3054                                 dnp->n_cookieverf.nfsuquad[0] = *tl++;
3055                                 dnp->n_cookieverf.nfsuquad[1] = *tl;
3056                                 NFSUNLOCKNODE(dnp);
3057                         }
3058                 }
3059                 if (nd->nd_repstat || error) {
3060                         if (!error)
3061                                 error = nd->nd_repstat;
3062                         goto nfsmout;
3063                 }
3064                 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
3065                 more_dirs = fxdr_unsigned(int, *tl);
3066                 if (!more_dirs)
3067                         tryformoredirs = 0;
3068
3069                 /* loop through the dir entries, doctoring them to 4bsd form */
3070                 while (more_dirs && bigenough) {
3071                         if (nd->nd_flag & ND_NFSV4) {
3072                                 NFSM_DISSECT(tl, u_int32_t *, 3*NFSX_UNSIGNED);
3073                                 ncookie.lval[0] = *tl++;
3074                                 ncookie.lval[1] = *tl++;
3075                                 len = fxdr_unsigned(int, *tl);
3076                         } else if (nd->nd_flag & ND_NFSV3) {
3077                                 NFSM_DISSECT(tl, u_int32_t *, 3*NFSX_UNSIGNED);
3078                                 nfsva.na_fileid = fxdr_hyper(tl);
3079                                 tl += 2;
3080                                 len = fxdr_unsigned(int, *tl);
3081                         } else {
3082                                 NFSM_DISSECT(tl, u_int32_t *, 2*NFSX_UNSIGNED);
3083                                 nfsva.na_fileid = fxdr_unsigned(uint64_t,
3084                                     *tl++);
3085                                 len = fxdr_unsigned(int, *tl);
3086                         }
3087                         if (len <= 0 || len > NFS_MAXNAMLEN) {
3088                                 error = EBADRPC;
3089                                 goto nfsmout;
3090                         }
3091                         tlen = roundup2(len, 8);
3092                         if (tlen == len)
3093                                 tlen += 8;  /* To ensure null termination. */
3094                         left = DIRBLKSIZ - blksiz;
3095                         if (_GENERIC_DIRLEN(len) + NFSX_HYPER > left) {
3096                                 NFSBZERO(uio_iov_base(uiop), left);
3097                                 dp->d_reclen += left;
3098                                 uio_iov_base_add(uiop, left);
3099                                 uio_iov_len_add(uiop, -(left));
3100                                 uio_uio_resid_add(uiop, -(left));
3101                                 uiop->uio_offset += left;
3102                                 blksiz = 0;
3103                         }
3104                         if (_GENERIC_DIRLEN(len) + NFSX_HYPER >
3105                             uio_uio_resid(uiop))
3106                                 bigenough = 0;
3107                         if (bigenough) {
3108                                 dp = (struct dirent *)uio_iov_base(uiop);
3109                                 dp->d_pad0 = dp->d_pad1 = 0;
3110                                 dp->d_off = 0;
3111                                 dp->d_namlen = len;
3112                                 dp->d_reclen = _GENERIC_DIRLEN(len) +
3113                                     NFSX_HYPER;
3114                                 dp->d_type = DT_UNKNOWN;
3115                                 blksiz += dp->d_reclen;
3116                                 if (blksiz == DIRBLKSIZ)
3117                                         blksiz = 0;
3118                                 uio_uio_resid_add(uiop, -(DIRHDSIZ));
3119                                 uiop->uio_offset += DIRHDSIZ;
3120                                 uio_iov_base_add(uiop, DIRHDSIZ);
3121                                 uio_iov_len_add(uiop, -(DIRHDSIZ));
3122                                 error = nfsm_mbufuio(nd, uiop, len);
3123                                 if (error)
3124                                         goto nfsmout;
3125                                 cp = uio_iov_base(uiop);
3126                                 tlen -= len;
3127                                 NFSBZERO(cp, tlen);
3128                                 cp += tlen;     /* points to cookie storage */
3129                                 tl2 = (u_int32_t *)cp;
3130                                 uio_iov_base_add(uiop, (tlen + NFSX_HYPER));
3131                                 uio_iov_len_add(uiop, -(tlen + NFSX_HYPER));
3132                                 uio_uio_resid_add(uiop, -(tlen + NFSX_HYPER));
3133                                 uiop->uio_offset += (tlen + NFSX_HYPER);
3134                         } else {
3135                                 error = nfsm_advance(nd, NFSM_RNDUP(len), -1);
3136                                 if (error)
3137                                         goto nfsmout;
3138                         }
3139                         if (nd->nd_flag & ND_NFSV4) {
3140                                 rderr = 0;
3141                                 nfsva.na_mntonfileno = UINT64_MAX;
3142                                 error = nfsv4_loadattr(nd, NULL, &nfsva, NULL,
3143                                     NULL, 0, NULL, NULL, NULL, NULL, NULL, 0,
3144                                     NULL, NULL, &rderr, p, cred);
3145                                 if (error)
3146                                         goto nfsmout;
3147                                 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
3148                         } else if (nd->nd_flag & ND_NFSV3) {
3149                                 NFSM_DISSECT(tl, u_int32_t *, 3*NFSX_UNSIGNED);
3150                                 ncookie.lval[0] = *tl++;
3151                                 ncookie.lval[1] = *tl++;
3152                         } else {
3153                                 NFSM_DISSECT(tl, u_int32_t *, 2*NFSX_UNSIGNED);
3154                                 ncookie.lval[0] = 0;
3155                                 ncookie.lval[1] = *tl++;
3156                         }
3157                         if (bigenough) {
3158                             if (nd->nd_flag & ND_NFSV4) {
3159                                 if (rderr) {
3160                                     dp->d_fileno = 0;
3161                                 } else {
3162                                     if (gotmnton) {
3163                                         if (nfsva.na_mntonfileno != UINT64_MAX)
3164                                             dp->d_fileno = nfsva.na_mntonfileno;
3165                                         else
3166                                             dp->d_fileno = nfsva.na_fileid;
3167                                     } else if (nfsva.na_filesid[0] ==
3168                                         dnp->n_vattr.na_filesid[0] &&
3169                                         nfsva.na_filesid[1] ==
3170                                         dnp->n_vattr.na_filesid[1]) {
3171                                         dp->d_fileno = nfsva.na_fileid;
3172                                     } else {
3173                                         do {
3174                                             fakefileno--;
3175                                         } while (fakefileno ==
3176                                             nfsva.na_fileid);
3177                                         dp->d_fileno = fakefileno;
3178                                     }
3179                                     dp->d_type = vtonfs_dtype(nfsva.na_type);
3180                                 }
3181                             } else {
3182                                 dp->d_fileno = nfsva.na_fileid;
3183                             }
3184                             *tl2++ = cookiep->nfsuquad[0] = cookie.lval[0] =
3185                                 ncookie.lval[0];
3186                             *tl2 = cookiep->nfsuquad[1] = cookie.lval[1] =
3187                                 ncookie.lval[1];
3188                         }
3189                         more_dirs = fxdr_unsigned(int, *tl);
3190                 }
3191                 /*
3192                  * If at end of rpc data, get the eof boolean
3193                  */
3194                 if (!more_dirs) {
3195                         NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
3196                         eof = fxdr_unsigned(int, *tl);
3197                         if (tryformoredirs)
3198                                 more_dirs = !eof;
3199                         if (nd->nd_flag & ND_NFSV4) {
3200                                 error = nfscl_postop_attr(nd, nap, attrflagp,
3201                                     stuff);
3202                                 if (error)
3203                                         goto nfsmout;
3204                         }
3205                 }
3206                 mbuf_freem(nd->nd_mrep);
3207                 nd->nd_mrep = NULL;
3208         }
3209         /*
3210          * Fill last record, iff any, out to a multiple of DIRBLKSIZ
3211          * by increasing d_reclen for the last record.
3212          */
3213         if (blksiz > 0) {
3214                 left = DIRBLKSIZ - blksiz;
3215                 NFSBZERO(uio_iov_base(uiop), left);
3216                 dp->d_reclen += left;
3217                 uio_iov_base_add(uiop, left);
3218                 uio_iov_len_add(uiop, -(left));
3219                 uio_uio_resid_add(uiop, -(left));
3220                 uiop->uio_offset += left;
3221         }
3222
3223         /*
3224          * If returning no data, assume end of file.
3225          * If not bigenough, return not end of file, since you aren't
3226          *    returning all the data
3227          * Otherwise, return the eof flag from the server.
3228          */
3229         if (eofp) {
3230                 if (tresid == ((size_t)(uio_uio_resid(uiop))))
3231                         *eofp = 1;
3232                 else if (!bigenough)
3233                         *eofp = 0;
3234                 else
3235                         *eofp = eof;
3236         }
3237
3238         /*
3239          * Add extra empty records to any remaining DIRBLKSIZ chunks.
3240          */
3241         while (uio_uio_resid(uiop) > 0 && uio_uio_resid(uiop) != tresid) {
3242                 dp = (struct dirent *)uio_iov_base(uiop);
3243                 NFSBZERO(dp, DIRBLKSIZ);
3244                 dp->d_type = DT_UNKNOWN;
3245                 tl = (u_int32_t *)&dp->d_name[4];
3246                 *tl++ = cookie.lval[0];
3247                 *tl = cookie.lval[1];
3248                 dp->d_reclen = DIRBLKSIZ;
3249                 uio_iov_base_add(uiop, DIRBLKSIZ);
3250                 uio_iov_len_add(uiop, -(DIRBLKSIZ));
3251                 uio_uio_resid_add(uiop, -(DIRBLKSIZ));
3252                 uiop->uio_offset += DIRBLKSIZ;
3253         }
3254
3255 nfsmout:
3256         if (nd->nd_mrep != NULL)
3257                 mbuf_freem(nd->nd_mrep);
3258         return (error);
3259 }
3260
3261 #ifndef APPLE
3262 /*
3263  * NFS V3 readdir plus RPC. Used in place of nfsrpc_readdir().
3264  * (Also used for NFS V4 when mount flag set.)
3265  * (ditto above w.r.t. multiple of DIRBLKSIZ, etc.)
3266  */
3267 APPLESTATIC int
3268 nfsrpc_readdirplus(vnode_t vp, struct uio *uiop, nfsuint64 *cookiep,
3269     struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp,
3270     int *eofp, void *stuff)
3271 {
3272         int len, left;
3273         struct dirent *dp = NULL;
3274         u_int32_t *tl;
3275         vnode_t newvp = NULLVP;
3276         struct nfsrv_descript nfsd, *nd = &nfsd;
3277         struct nameidata nami, *ndp = &nami;
3278         struct componentname *cnp = &ndp->ni_cnd;
3279         struct nfsmount *nmp = VFSTONFS(vnode_mount(vp));
3280         struct nfsnode *dnp = VTONFS(vp), *np;
3281         struct nfsvattr nfsva;
3282         struct nfsfh *nfhp;
3283         nfsquad_t cookie, ncookie;
3284         int error = 0, tlen, more_dirs = 1, blksiz = 0, bigenough = 1;
3285         int attrflag, tryformoredirs = 1, eof = 0, gotmnton = 0;
3286         int isdotdot = 0, unlocknewvp = 0;
3287         u_int64_t dotfileid, dotdotfileid = 0, fakefileno = UINT64_MAX;
3288         u_int64_t fileno = 0;
3289         char *cp;
3290         nfsattrbit_t attrbits, dattrbits;
3291         size_t tresid;
3292         u_int32_t *tl2 = NULL, rderr;
3293         struct timespec dctime;
3294
3295         KASSERT(uiop->uio_iovcnt == 1 &&
3296             (uio_uio_resid(uiop) & (DIRBLKSIZ - 1)) == 0,
3297             ("nfs readdirplusrpc bad uio"));
3298         ncookie.lval[0] = ncookie.lval[1] = 0;
3299         timespecclear(&dctime);
3300         *attrflagp = 0;
3301         if (eofp != NULL)
3302                 *eofp = 0;
3303         ndp->ni_dvp = vp;
3304         nd->nd_mrep = NULL;
3305         cookie.lval[0] = cookiep->nfsuquad[0];
3306         cookie.lval[1] = cookiep->nfsuquad[1];
3307         tresid = uio_uio_resid(uiop);
3308
3309         /*
3310          * For NFSv4, first create the "." and ".." entries.
3311          */
3312         if (NFSHASNFSV4(nmp)) {
3313                 NFSGETATTR_ATTRBIT(&dattrbits);
3314                 NFSZERO_ATTRBIT(&attrbits);
3315                 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_FILEID);
3316                 if (NFSISSET_ATTRBIT(&dnp->n_vattr.na_suppattr,
3317                     NFSATTRBIT_MOUNTEDONFILEID)) {
3318                         NFSSETBIT_ATTRBIT(&attrbits,
3319                             NFSATTRBIT_MOUNTEDONFILEID);
3320                         gotmnton = 1;
3321                 } else {
3322                         /*
3323                          * Must fake it. Use the fileno, except when the
3324                          * fsid is != to that of the directory. For that
3325                          * case, generate a fake fileno that is not the same.
3326                          */
3327                         NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_FSID);
3328                         gotmnton = 0;
3329                 }
3330
3331                 /*
3332                  * Joy, oh joy. For V4 we get to hand craft '.' and '..'.
3333                  */
3334                 if (uiop->uio_offset == 0) {
3335                         NFSCL_REQSTART(nd, NFSPROC_LOOKUPP, vp);
3336                         NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
3337                         *tl++ = txdr_unsigned(NFSV4OP_GETFH);
3338                         *tl = txdr_unsigned(NFSV4OP_GETATTR);
3339                         (void) nfsrv_putattrbit(nd, &attrbits);
3340                         error = nfscl_request(nd, vp, p, cred, stuff);
3341                         if (error)
3342                             return (error);
3343                         dotfileid = 0;  /* Fake out the compiler. */
3344                         if ((nd->nd_flag & ND_NOMOREDATA) == 0) {
3345                             error = nfsm_loadattr(nd, &nfsva);
3346                             if (error != 0)
3347                                 goto nfsmout;
3348                             dctime = nfsva.na_ctime;
3349                             dotfileid = nfsva.na_fileid;
3350                         }
3351                         if (nd->nd_repstat == 0) {
3352                             NFSM_DISSECT(tl, u_int32_t *, 5 * NFSX_UNSIGNED);
3353                             len = fxdr_unsigned(int, *(tl + 4));
3354                             if (len > 0 && len <= NFSX_V4FHMAX)
3355                                 error = nfsm_advance(nd, NFSM_RNDUP(len), -1);
3356                             else
3357                                 error = EPERM;
3358                             if (!error) {
3359                                 NFSM_DISSECT(tl, u_int32_t *, 2*NFSX_UNSIGNED);
3360                                 nfsva.na_mntonfileno = UINT64_MAX;
3361                                 error = nfsv4_loadattr(nd, NULL, &nfsva, NULL,
3362                                     NULL, 0, NULL, NULL, NULL, NULL, NULL, 0,
3363                                     NULL, NULL, NULL, p, cred);
3364                                 if (error) {
3365                                     dotdotfileid = dotfileid;
3366                                 } else if (gotmnton) {
3367                                     if (nfsva.na_mntonfileno != UINT64_MAX)
3368                                         dotdotfileid = nfsva.na_mntonfileno;
3369                                     else
3370                                         dotdotfileid = nfsva.na_fileid;
3371                                 } else if (nfsva.na_filesid[0] ==
3372                                     dnp->n_vattr.na_filesid[0] &&
3373                                     nfsva.na_filesid[1] ==
3374                                     dnp->n_vattr.na_filesid[1]) {
3375                                     dotdotfileid = nfsva.na_fileid;
3376                                 } else {
3377                                     do {
3378                                         fakefileno--;
3379                                     } while (fakefileno ==
3380                                         nfsva.na_fileid);
3381                                     dotdotfileid = fakefileno;
3382                                 }
3383                             }
3384                         } else if (nd->nd_repstat == NFSERR_NOENT) {
3385                             /*
3386                              * Lookupp returns NFSERR_NOENT when we are
3387                              * at the root, so just use the current dir.
3388                              */
3389                             nd->nd_repstat = 0;
3390                             dotdotfileid = dotfileid;
3391                         } else {
3392                             error = nd->nd_repstat;
3393                         }
3394                         mbuf_freem(nd->nd_mrep);
3395                         if (error)
3396                             return (error);
3397                         nd->nd_mrep = NULL;
3398                         dp = (struct dirent *)uio_iov_base(uiop);
3399                         dp->d_pad0 = dp->d_pad1 = 0;
3400                         dp->d_off = 0;
3401                         dp->d_type = DT_DIR;
3402                         dp->d_fileno = dotfileid;
3403                         dp->d_namlen = 1;
3404                         *((uint64_t *)dp->d_name) = 0;  /* Zero pad it. */
3405                         dp->d_name[0] = '.';
3406                         dp->d_reclen = _GENERIC_DIRSIZ(dp) + NFSX_HYPER;
3407                         /*
3408                          * Just make these offset cookie 0.
3409                          */
3410                         tl = (u_int32_t *)&dp->d_name[8];
3411                         *tl++ = 0;
3412                         *tl = 0;
3413                         blksiz += dp->d_reclen;
3414                         uio_uio_resid_add(uiop, -(dp->d_reclen));
3415                         uiop->uio_offset += dp->d_reclen;
3416                         uio_iov_base_add(uiop, dp->d_reclen);
3417                         uio_iov_len_add(uiop, -(dp->d_reclen));
3418                         dp = (struct dirent *)uio_iov_base(uiop);
3419                         dp->d_pad0 = dp->d_pad1 = 0;
3420                         dp->d_off = 0;
3421                         dp->d_type = DT_DIR;
3422                         dp->d_fileno = dotdotfileid;
3423                         dp->d_namlen = 2;
3424                         *((uint64_t *)dp->d_name) = 0;
3425                         dp->d_name[0] = '.';
3426                         dp->d_name[1] = '.';
3427                         dp->d_reclen = _GENERIC_DIRSIZ(dp) + NFSX_HYPER;
3428                         /*
3429                          * Just make these offset cookie 0.
3430                          */
3431                         tl = (u_int32_t *)&dp->d_name[8];
3432                         *tl++ = 0;
3433                         *tl = 0;
3434                         blksiz += dp->d_reclen;
3435                         uio_uio_resid_add(uiop, -(dp->d_reclen));
3436                         uiop->uio_offset += dp->d_reclen;
3437                         uio_iov_base_add(uiop, dp->d_reclen);
3438                         uio_iov_len_add(uiop, -(dp->d_reclen));
3439                 }
3440                 NFSREADDIRPLUS_ATTRBIT(&attrbits);
3441                 if (gotmnton)
3442                         NFSSETBIT_ATTRBIT(&attrbits,
3443                             NFSATTRBIT_MOUNTEDONFILEID);
3444         }
3445
3446         /*
3447          * Loop around doing readdir rpc's of size nm_readdirsize.
3448          * The stopping criteria is EOF or buffer full.
3449          */
3450         while (more_dirs && bigenough) {
3451                 *attrflagp = 0;
3452                 NFSCL_REQSTART(nd, NFSPROC_READDIRPLUS, vp);
3453                 NFSM_BUILD(tl, u_int32_t *, 6 * NFSX_UNSIGNED);
3454                 *tl++ = cookie.lval[0];
3455                 *tl++ = cookie.lval[1];
3456                 if (cookie.qval == 0) {
3457                         *tl++ = 0;
3458                         *tl++ = 0;
3459                 } else {
3460                         NFSLOCKNODE(dnp);
3461                         *tl++ = dnp->n_cookieverf.nfsuquad[0];
3462                         *tl++ = dnp->n_cookieverf.nfsuquad[1];
3463                         NFSUNLOCKNODE(dnp);
3464                 }
3465                 *tl++ = txdr_unsigned(nmp->nm_readdirsize);
3466                 *tl = txdr_unsigned(nmp->nm_readdirsize);
3467                 if (nd->nd_flag & ND_NFSV4) {
3468                         (void) nfsrv_putattrbit(nd, &attrbits);
3469                         NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
3470                         *tl = txdr_unsigned(NFSV4OP_GETATTR);
3471                         (void) nfsrv_putattrbit(nd, &dattrbits);
3472                 }
3473                 error = nfscl_request(nd, vp, p, cred, stuff);
3474                 if (error)
3475                         return (error);
3476                 if (nd->nd_flag & ND_NFSV3)
3477                         error = nfscl_postop_attr(nd, nap, attrflagp, stuff);
3478                 if (nd->nd_repstat || error) {
3479                         if (!error)
3480                                 error = nd->nd_repstat;
3481                         goto nfsmout;
3482                 }
3483                 if ((nd->nd_flag & ND_NFSV3) != 0 && *attrflagp != 0)
3484                         dctime = nap->na_ctime;
3485                 NFSM_DISSECT(tl, u_int32_t *, 3 * NFSX_UNSIGNED);
3486                 NFSLOCKNODE(dnp);
3487                 dnp->n_cookieverf.nfsuquad[0] = *tl++;
3488                 dnp->n_cookieverf.nfsuquad[1] = *tl++;
3489                 NFSUNLOCKNODE(dnp);
3490                 more_dirs = fxdr_unsigned(int, *tl);
3491                 if (!more_dirs)
3492                         tryformoredirs = 0;
3493
3494                 /* loop through the dir entries, doctoring them to 4bsd form */
3495                 while (more_dirs && bigenough) {
3496                         NFSM_DISSECT(tl, u_int32_t *, 3 * NFSX_UNSIGNED);
3497                         if (nd->nd_flag & ND_NFSV4) {
3498                                 ncookie.lval[0] = *tl++;
3499                                 ncookie.lval[1] = *tl++;
3500                         } else {
3501                                 fileno = fxdr_hyper(tl);
3502                                 tl += 2;
3503                         }
3504                         len = fxdr_unsigned(int, *tl);
3505                         if (len <= 0 || len > NFS_MAXNAMLEN) {
3506                                 error = EBADRPC;
3507                                 goto nfsmout;
3508                         }
3509                         tlen = roundup2(len, 8);
3510                         if (tlen == len)
3511                                 tlen += 8;  /* To ensure null termination. */
3512                         left = DIRBLKSIZ - blksiz;
3513                         if (_GENERIC_DIRLEN(len) + NFSX_HYPER > left) {
3514                                 NFSBZERO(uio_iov_base(uiop), left);
3515                                 dp->d_reclen += left;
3516                                 uio_iov_base_add(uiop, left);
3517                                 uio_iov_len_add(uiop, -(left));
3518                                 uio_uio_resid_add(uiop, -(left));
3519                                 uiop->uio_offset += left;
3520                                 blksiz = 0;
3521                         }
3522                         if (_GENERIC_DIRLEN(len) + NFSX_HYPER >
3523                             uio_uio_resid(uiop))
3524                                 bigenough = 0;
3525                         if (bigenough) {
3526                                 dp = (struct dirent *)uio_iov_base(uiop);
3527                                 dp->d_pad0 = dp->d_pad1 = 0;
3528                                 dp->d_off = 0;
3529                                 dp->d_namlen = len;
3530                                 dp->d_reclen = _GENERIC_DIRLEN(len) +
3531                                     NFSX_HYPER;
3532                                 dp->d_type = DT_UNKNOWN;
3533                                 blksiz += dp->d_reclen;
3534                                 if (blksiz == DIRBLKSIZ)
3535                                         blksiz = 0;
3536                                 uio_uio_resid_add(uiop, -(DIRHDSIZ));
3537                                 uiop->uio_offset += DIRHDSIZ;
3538                                 uio_iov_base_add(uiop, DIRHDSIZ);
3539                                 uio_iov_len_add(uiop, -(DIRHDSIZ));
3540                                 cnp->cn_nameptr = uio_iov_base(uiop);
3541                                 cnp->cn_namelen = len;
3542                                 NFSCNHASHZERO(cnp);
3543                                 error = nfsm_mbufuio(nd, uiop, len);
3544                                 if (error)
3545                                         goto nfsmout;
3546                                 cp = uio_iov_base(uiop);
3547                                 tlen -= len;
3548                                 NFSBZERO(cp, tlen);
3549                                 cp += tlen;     /* points to cookie storage */
3550                                 tl2 = (u_int32_t *)cp;
3551                                 if (len == 2 && cnp->cn_nameptr[0] == '.' &&
3552                                     cnp->cn_nameptr[1] == '.')
3553                                         isdotdot = 1;
3554                                 else
3555                                         isdotdot = 0;
3556                                 uio_iov_base_add(uiop, (tlen + NFSX_HYPER));
3557                                 uio_iov_len_add(uiop, -(tlen + NFSX_HYPER));
3558                                 uio_uio_resid_add(uiop, -(tlen + NFSX_HYPER));
3559                                 uiop->uio_offset += (tlen + NFSX_HYPER);
3560                         } else {
3561                                 error = nfsm_advance(nd, NFSM_RNDUP(len), -1);
3562                                 if (error)
3563                                         goto nfsmout;
3564                         }
3565                         nfhp = NULL;
3566                         if (nd->nd_flag & ND_NFSV3) {
3567                                 NFSM_DISSECT(tl, u_int32_t *, 3*NFSX_UNSIGNED);
3568                                 ncookie.lval[0] = *tl++;
3569                                 ncookie.lval[1] = *tl++;
3570                                 attrflag = fxdr_unsigned(int, *tl);
3571                                 if (attrflag) {
3572                                   error = nfsm_loadattr(nd, &nfsva);
3573                                   if (error)
3574                                         goto nfsmout;
3575                                 }
3576                                 NFSM_DISSECT(tl,u_int32_t *,NFSX_UNSIGNED);
3577                                 if (*tl) {
3578                                         error = nfsm_getfh(nd, &nfhp);
3579                                         if (error)
3580                                             goto nfsmout;
3581                                 }
3582                                 if (!attrflag && nfhp != NULL) {
3583                                         free(nfhp, M_NFSFH);
3584                                         nfhp = NULL;
3585                                 }
3586                         } else {
3587                                 rderr = 0;
3588                                 nfsva.na_mntonfileno = 0xffffffff;
3589                                 error = nfsv4_loadattr(nd, NULL, &nfsva, &nfhp,
3590                                     NULL, 0, NULL, NULL, NULL, NULL, NULL, 0,
3591                                     NULL, NULL, &rderr, p, cred);
3592                                 if (error)
3593                                         goto nfsmout;
3594                         }
3595
3596                         if (bigenough) {
3597                             if (nd->nd_flag & ND_NFSV4) {
3598                                 if (rderr) {
3599                                     dp->d_fileno = 0;
3600                                 } else if (gotmnton) {
3601                                     if (nfsva.na_mntonfileno != 0xffffffff)
3602                                         dp->d_fileno = nfsva.na_mntonfileno;
3603                                     else
3604                                         dp->d_fileno = nfsva.na_fileid;
3605                                 } else if (nfsva.na_filesid[0] ==
3606                                     dnp->n_vattr.na_filesid[0] &&
3607                                     nfsva.na_filesid[1] ==
3608                                     dnp->n_vattr.na_filesid[1]) {
3609                                     dp->d_fileno = nfsva.na_fileid;
3610                                 } else {
3611                                     do {
3612                                         fakefileno--;
3613                                     } while (fakefileno ==
3614                                         nfsva.na_fileid);
3615                                     dp->d_fileno = fakefileno;
3616                                 }
3617                             } else {
3618                                 dp->d_fileno = fileno;
3619                             }
3620                             *tl2++ = cookiep->nfsuquad[0] = cookie.lval[0] =
3621                                 ncookie.lval[0];
3622                             *tl2 = cookiep->nfsuquad[1] = cookie.lval[1] =
3623                                 ncookie.lval[1];
3624
3625                             if (nfhp != NULL) {
3626                                 if (NFSRV_CMPFH(nfhp->nfh_fh, nfhp->nfh_len,
3627                                     dnp->n_fhp->nfh_fh, dnp->n_fhp->nfh_len)) {
3628                                     VREF(vp);
3629                                     newvp = vp;
3630                                     unlocknewvp = 0;
3631                                     free(nfhp, M_NFSFH);
3632                                     np = dnp;
3633                                 } else if (isdotdot != 0) {
3634                                     /*
3635                                      * Skip doing a nfscl_nget() call for "..".
3636                                      * There's a race between acquiring the nfs
3637                                      * node here and lookups that look for the
3638                                      * directory being read (in the parent).
3639                                      * It would try to get a lock on ".." here,
3640                                      * owning the lock on the directory being
3641                                      * read. Lookup will hold the lock on ".."
3642                                      * and try to acquire the lock on the
3643                                      * directory being read.
3644                                      * If the directory is unlocked/relocked,
3645                                      * then there is a LOR with the buflock
3646                                      * vp is relocked.
3647                                      */
3648                                     free(nfhp, M_NFSFH);
3649                                 } else {
3650                                     error = nfscl_nget(vnode_mount(vp), vp,
3651                                       nfhp, cnp, p, &np, NULL, LK_EXCLUSIVE);
3652                                     if (!error) {
3653                                         newvp = NFSTOV(np);
3654                                         unlocknewvp = 1;
3655                                     }
3656                                 }
3657                                 nfhp = NULL;
3658                                 if (newvp != NULLVP) {
3659                                     error = nfscl_loadattrcache(&newvp,
3660                                         &nfsva, NULL, NULL, 0, 0);
3661                                     if (error) {
3662                                         if (unlocknewvp)
3663                                             vput(newvp);
3664                                         else
3665                                             vrele(newvp);
3666                                         goto nfsmout;
3667                                     }
3668                                     dp->d_type =
3669                                         vtonfs_dtype(np->n_vattr.na_type);
3670                                     ndp->ni_vp = newvp;
3671                                     NFSCNHASH(cnp, HASHINIT);
3672                                     if (cnp->cn_namelen <= NCHNAMLEN &&
3673                                         (newvp->v_type != VDIR ||
3674                                          dctime.tv_sec != 0)) {
3675                                         cache_enter_time(ndp->ni_dvp,
3676                                             ndp->ni_vp, cnp,
3677                                             &nfsva.na_ctime,
3678                                             newvp->v_type != VDIR ? NULL :
3679                                             &dctime);
3680                                     }
3681                                     if (unlocknewvp)
3682                                         vput(newvp);
3683                                     else
3684                                         vrele(newvp);
3685                                     newvp = NULLVP;
3686                                 }
3687                             }
3688                         } else if (nfhp != NULL) {
3689                             free(nfhp, M_NFSFH);
3690                         }
3691                         NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
3692                         more_dirs = fxdr_unsigned(int, *tl);
3693                 }
3694                 /*
3695                  * If at end of rpc data, get the eof boolean
3696                  */
3697                 if (!more_dirs) {
3698                         NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
3699                         eof = fxdr_unsigned(int, *tl);
3700                         if (tryformoredirs)
3701                                 more_dirs = !eof;
3702                         if (nd->nd_flag & ND_NFSV4) {
3703                                 error = nfscl_postop_attr(nd, nap, attrflagp,
3704                                     stuff);
3705                                 if (error)
3706                                         goto nfsmout;
3707                         }
3708                 }
3709                 mbuf_freem(nd->nd_mrep);
3710                 nd->nd_mrep = NULL;
3711         }
3712         /*
3713          * Fill last record, iff any, out to a multiple of DIRBLKSIZ
3714          * by increasing d_reclen for the last record.
3715          */
3716         if (blksiz > 0) {
3717                 left = DIRBLKSIZ - blksiz;
3718                 NFSBZERO(uio_iov_base(uiop), left);
3719                 dp->d_reclen += left;
3720                 uio_iov_base_add(uiop, left);
3721                 uio_iov_len_add(uiop, -(left));
3722                 uio_uio_resid_add(uiop, -(left));
3723                 uiop->uio_offset += left;
3724         }
3725
3726         /*
3727          * If returning no data, assume end of file.
3728          * If not bigenough, return not end of file, since you aren't
3729          *    returning all the data
3730          * Otherwise, return the eof flag from the server.
3731          */
3732         if (eofp != NULL) {
3733                 if (tresid == uio_uio_resid(uiop))
3734                         *eofp = 1;
3735                 else if (!bigenough)
3736                         *eofp = 0;
3737                 else
3738                         *eofp = eof;
3739         }
3740
3741         /*
3742          * Add extra empty records to any remaining DIRBLKSIZ chunks.
3743          */
3744         while (uio_uio_resid(uiop) > 0 && uio_uio_resid(uiop) != tresid) {
3745                 dp = (struct dirent *)uio_iov_base(uiop);
3746                 NFSBZERO(dp, DIRBLKSIZ);
3747                 dp->d_type = DT_UNKNOWN;
3748                 tl = (u_int32_t *)&dp->d_name[4];
3749                 *tl++ = cookie.lval[0];
3750                 *tl = cookie.lval[1];
3751                 dp->d_reclen = DIRBLKSIZ;
3752                 uio_iov_base_add(uiop, DIRBLKSIZ);
3753                 uio_iov_len_add(uiop, -(DIRBLKSIZ));
3754                 uio_uio_resid_add(uiop, -(DIRBLKSIZ));
3755                 uiop->uio_offset += DIRBLKSIZ;
3756         }
3757
3758 nfsmout:
3759         if (nd->nd_mrep != NULL)
3760                 mbuf_freem(nd->nd_mrep);
3761         return (error);
3762 }
3763 #endif  /* !APPLE */
3764
3765 /*
3766  * Nfs commit rpc
3767  */
3768 APPLESTATIC int
3769 nfsrpc_commit(vnode_t vp, u_quad_t offset, int cnt, struct ucred *cred,
3770     NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff)
3771 {
3772         u_int32_t *tl;
3773         struct nfsrv_descript nfsd, *nd = &nfsd;
3774         nfsattrbit_t attrbits;
3775         int error;
3776         struct nfsmount *nmp = VFSTONFS(vnode_mount(vp));
3777
3778         *attrflagp = 0;
3779         NFSCL_REQSTART(nd, NFSPROC_COMMIT, vp);
3780         NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED);
3781         txdr_hyper(offset, tl);
3782         tl += 2;
3783         *tl = txdr_unsigned(cnt);
3784         if (nd->nd_flag & ND_NFSV4) {
3785                 /*
3786                  * And do a Getattr op.
3787                  */
3788                 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
3789                 *tl = txdr_unsigned(NFSV4OP_GETATTR);
3790                 NFSGETATTR_ATTRBIT(&attrbits);
3791                 (void) nfsrv_putattrbit(nd, &attrbits);
3792         }
3793         error = nfscl_request(nd, vp, p, cred, stuff);
3794         if (error)
3795                 return (error);
3796         error = nfscl_wcc_data(nd, vp, nap, attrflagp, NULL, stuff);
3797         if (!error && !nd->nd_repstat) {
3798                 NFSM_DISSECT(tl, u_int32_t *, NFSX_VERF);
3799                 NFSLOCKMNT(nmp);
3800                 if (NFSBCMP(nmp->nm_verf, tl, NFSX_VERF)) {
3801                         NFSBCOPY(tl, nmp->nm_verf, NFSX_VERF);
3802                         nd->nd_repstat = NFSERR_STALEWRITEVERF;
3803                 }
3804                 NFSUNLOCKMNT(nmp);
3805                 if (nd->nd_flag & ND_NFSV4)
3806                         error = nfscl_postop_attr(nd, nap, attrflagp, stuff);
3807         }
3808 nfsmout:
3809         if (!error && nd->nd_repstat)
3810                 error = nd->nd_repstat;
3811         mbuf_freem(nd->nd_mrep);
3812         return (error);
3813 }
3814
3815 /*
3816  * NFS byte range lock rpc.
3817  * (Mostly just calls one of the three lower level RPC routines.)
3818  */
3819 APPLESTATIC int
3820 nfsrpc_advlock(vnode_t vp, off_t size, int op, struct flock *fl,
3821     int reclaim, struct ucred *cred, NFSPROC_T *p, void *id, int flags)
3822 {
3823         struct nfscllockowner *lp;
3824         struct nfsclclient *clp;
3825         struct nfsfh *nfhp;
3826         struct nfsrv_descript nfsd, *nd = &nfsd;
3827         struct nfsmount *nmp = VFSTONFS(vnode_mount(vp));
3828         u_int64_t off, len;
3829         off_t start, end;
3830         u_int32_t clidrev = 0;
3831         int error = 0, newone = 0, expireret = 0, retrycnt, donelocally;
3832         int callcnt, dorpc;
3833
3834         /*
3835          * Convert the flock structure into a start and end and do POSIX
3836          * bounds checking.
3837          */
3838         switch (fl->l_whence) {
3839         case SEEK_SET:
3840         case SEEK_CUR:
3841                 /*
3842                  * Caller is responsible for adding any necessary offset
3843                  * when SEEK_CUR is used.
3844                  */
3845                 start = fl->l_start;
3846                 off = fl->l_start;
3847                 break;
3848         case SEEK_END:
3849                 start = size + fl->l_start;
3850                 off = size + fl->l_start;
3851                 break;
3852         default:
3853                 return (EINVAL);
3854         }
3855         if (start < 0)
3856                 return (EINVAL);
3857         if (fl->l_len != 0) {
3858                 end = start + fl->l_len - 1;
3859                 if (end < start)
3860                         return (EINVAL);
3861         }
3862
3863         len = fl->l_len;
3864         if (len == 0)
3865                 len = NFS64BITSSET;
3866         retrycnt = 0;
3867         do {
3868             nd->nd_repstat = 0;
3869             if (op == F_GETLK) {
3870                 error = nfscl_getcl(vnode_mount(vp), cred, p, 1, &clp);
3871                 if (error)
3872                         return (error);
3873                 error = nfscl_lockt(vp, clp, off, len, fl, p, id, flags);
3874                 if (!error) {
3875                         clidrev = clp->nfsc_clientidrev;
3876                         error = nfsrpc_lockt(nd, vp, clp, off, len, fl, cred,
3877                             p, id, flags);
3878                 } else if (error == -1) {
3879                         error = 0;
3880                 }
3881                 nfscl_clientrelease(clp);
3882             } else if (op == F_UNLCK && fl->l_type == F_UNLCK) {
3883                 /*
3884                  * We must loop around for all lockowner cases.
3885                  */
3886                 callcnt = 0;
3887                 error = nfscl_getcl(vnode_mount(vp), cred, p, 1, &clp);
3888                 if (error)
3889                         return (error);
3890                 do {
3891                     error = nfscl_relbytelock(vp, off, len, cred, p, callcnt,
3892                         clp, id, flags, &lp, &dorpc);
3893                     /*
3894                      * If it returns a NULL lp, we're done.
3895                      */
3896                     if (lp == NULL) {
3897                         if (callcnt == 0)
3898                             nfscl_clientrelease(clp);
3899                         else
3900                             nfscl_releasealllocks(clp, vp, p, id, flags);
3901                         return (error);
3902                     }
3903                     if (nmp->nm_clp != NULL)
3904                         clidrev = nmp->nm_clp->nfsc_clientidrev;
3905                     else
3906                         clidrev = 0;
3907                     /*
3908                      * If the server doesn't support Posix lock semantics,
3909                      * only allow locks on the entire file, since it won't
3910                      * handle overlapping byte ranges.
3911                      * There might still be a problem when a lock
3912                      * upgrade/downgrade (read<->write) occurs, since the
3913                      * server "might" expect an unlock first?
3914                      */
3915                     if (dorpc && (lp->nfsl_open->nfso_posixlock ||
3916                         (off == 0 && len == NFS64BITSSET))) {
3917                         /*
3918                          * Since the lock records will go away, we must
3919                          * wait for grace and delay here.
3920                          */
3921                         do {
3922                             error = nfsrpc_locku(nd, nmp, lp, off, len,
3923                                 NFSV4LOCKT_READ, cred, p, 0);
3924                             if ((nd->nd_repstat == NFSERR_GRACE ||
3925                                  nd->nd_repstat == NFSERR_DELAY) &&
3926                                 error == 0)
3927                                 (void) nfs_catnap(PZERO, (int)nd->nd_repstat,
3928                                     "nfs_advlock");
3929                         } while ((nd->nd_repstat == NFSERR_GRACE ||
3930                             nd->nd_repstat == NFSERR_DELAY) && error == 0);
3931                     }
3932                     callcnt++;
3933                 } while (error == 0 && nd->nd_repstat == 0);
3934                 nfscl_releasealllocks(clp, vp, p, id, flags);
3935             } else if (op == F_SETLK) {
3936                 error = nfscl_getbytelock(vp, off, len, fl->l_type, cred, p,
3937                     NULL, 0, id, flags, NULL, NULL, &lp, &newone, &donelocally);
3938                 if (error || donelocally) {
3939                         return (error);
3940                 }
3941                 if (nmp->nm_clp != NULL)
3942                         clidrev = nmp->nm_clp->nfsc_clientidrev;
3943                 else
3944                         clidrev = 0;
3945                 nfhp = VTONFS(vp)->n_fhp;
3946                 if (!lp->nfsl_open->nfso_posixlock &&
3947                     (off != 0 || len != NFS64BITSSET)) {
3948                         error = EINVAL;
3949                 } else {
3950                         error = nfsrpc_lock(nd, nmp, vp, nfhp->nfh_fh,
3951                             nfhp->nfh_len, lp, newone, reclaim, off,
3952                             len, fl->l_type, cred, p, 0);
3953                 }
3954                 if (!error)
3955                         error = nd->nd_repstat;
3956                 nfscl_lockrelease(lp, error, newone);
3957             } else {
3958                 error = EINVAL;
3959             }
3960             if (!error)
3961                 error = nd->nd_repstat;
3962             if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID ||
3963                 error == NFSERR_STALEDONTRECOVER ||
3964                 error == NFSERR_STALECLIENTID || error == NFSERR_DELAY ||
3965                 error == NFSERR_BADSESSION) {
3966                 (void) nfs_catnap(PZERO, error, "nfs_advlock");
3967             } else if ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID)
3968                 && clidrev != 0) {
3969                 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p);
3970                 retrycnt++;
3971             }
3972         } while (error == NFSERR_GRACE ||
3973             error == NFSERR_STALECLIENTID || error == NFSERR_DELAY ||
3974             error == NFSERR_STALEDONTRECOVER || error == NFSERR_STALESTATEID ||
3975             error == NFSERR_BADSESSION ||
3976             ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) &&
3977              expireret == 0 && clidrev != 0 && retrycnt < 4));
3978         if (error && retrycnt >= 4)
3979                 error = EIO;
3980         return (error);
3981 }
3982
3983 /*
3984  * The lower level routine for the LockT case.
3985  */
3986 APPLESTATIC int
3987 nfsrpc_lockt(struct nfsrv_descript *nd, vnode_t vp,
3988     struct nfsclclient *clp, u_int64_t off, u_int64_t len, struct flock *fl,
3989     struct ucred *cred, NFSPROC_T *p, void *id, int flags)
3990 {
3991         u_int32_t *tl;
3992         int error, type, size;
3993         uint8_t own[NFSV4CL_LOCKNAMELEN + NFSX_V4FHMAX];
3994         struct nfsnode *np;
3995         struct nfsmount *nmp;
3996         struct nfsclsession *tsep;
3997
3998         nmp = VFSTONFS(vp->v_mount);
3999         NFSCL_REQSTART(nd, NFSPROC_LOCKT, vp);
4000         NFSM_BUILD(tl, u_int32_t *, 7 * NFSX_UNSIGNED);
4001         if (fl->l_type == F_RDLCK)
4002                 *tl++ = txdr_unsigned(NFSV4LOCKT_READ);
4003         else
4004                 *tl++ = txdr_unsigned(NFSV4LOCKT_WRITE);
4005         txdr_hyper(off, tl);
4006         tl += 2;
4007         txdr_hyper(len, tl);
4008         tl += 2;
4009         tsep = nfsmnt_mdssession(nmp);
4010         *tl++ = tsep->nfsess_clientid.lval[0];
4011         *tl = tsep->nfsess_clientid.lval[1];
4012         nfscl_filllockowner(id, own, flags);
4013         np = VTONFS(vp);
4014         NFSBCOPY(np->n_fhp->nfh_fh, &own[NFSV4CL_LOCKNAMELEN],
4015             np->n_fhp->nfh_len);
4016         (void)nfsm_strtom(nd, own, NFSV4CL_LOCKNAMELEN + np->n_fhp->nfh_len);
4017         error = nfscl_request(nd, vp, p, cred, NULL);
4018         if (error)
4019                 return (error);
4020         if (nd->nd_repstat == 0) {
4021                 fl->l_type = F_UNLCK;
4022         } else if (nd->nd_repstat == NFSERR_DENIED) {
4023                 nd->nd_repstat = 0;
4024                 fl->l_whence = SEEK_SET;
4025                 NFSM_DISSECT(tl, u_int32_t *, 8 * NFSX_UNSIGNED);
4026                 fl->l_start = fxdr_hyper(tl);
4027                 tl += 2;
4028                 len = fxdr_hyper(tl);
4029                 tl += 2;
4030                 if (len == NFS64BITSSET)
4031                         fl->l_len = 0;
4032                 else
4033                         fl->l_len = len;
4034                 type = fxdr_unsigned(int, *tl++);
4035                 if (type == NFSV4LOCKT_WRITE)
4036                         fl->l_type = F_WRLCK;
4037                 else
4038                         fl->l_type = F_RDLCK;
4039                 /*
4040                  * XXX For now, I have no idea what to do with the
4041                  * conflicting lock_owner, so I'll just set the pid == 0
4042                  * and skip over the lock_owner.
4043                  */
4044                 fl->l_pid = (pid_t)0;
4045                 tl += 2;
4046                 size = fxdr_unsigned(int, *tl);
4047                 if (size < 0 || size > NFSV4_OPAQUELIMIT)
4048                         error = EBADRPC;
4049                 if (!error)
4050                         error = nfsm_advance(nd, NFSM_RNDUP(size), -1);
4051         } else if (nd->nd_repstat == NFSERR_STALECLIENTID)
4052                 nfscl_initiate_recovery(clp);
4053 nfsmout:
4054         mbuf_freem(nd->nd_mrep);
4055         return (error);
4056 }
4057
4058 /*
4059  * Lower level function that performs the LockU RPC.
4060  */
4061 static int
4062 nfsrpc_locku(struct nfsrv_descript *nd, struct nfsmount *nmp,
4063     struct nfscllockowner *lp, u_int64_t off, u_int64_t len,
4064     u_int32_t type, struct ucred *cred, NFSPROC_T *p, int syscred)
4065 {
4066         u_int32_t *tl;
4067         int error;
4068
4069         nfscl_reqstart(nd, NFSPROC_LOCKU, nmp, lp->nfsl_open->nfso_fh,
4070             lp->nfsl_open->nfso_fhlen, NULL, NULL, 0, 0);
4071         NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID + 6 * NFSX_UNSIGNED);
4072         *tl++ = txdr_unsigned(type);
4073         *tl = txdr_unsigned(lp->nfsl_seqid);
4074         if (nfstest_outofseq &&
4075             (arc4random() % nfstest_outofseq) == 0)
4076                 *tl = txdr_unsigned(lp->nfsl_seqid + 1);
4077         tl++;
4078         if (NFSHASNFSV4N(nmp))
4079                 *tl++ = 0;
4080         else
4081                 *tl++ = lp->nfsl_stateid.seqid;
4082         *tl++ = lp->nfsl_stateid.other[0];
4083         *tl++ = lp->nfsl_stateid.other[1];
4084         *tl++ = lp->nfsl_stateid.other[2];
4085         txdr_hyper(off, tl);
4086         tl += 2;
4087         txdr_hyper(len, tl);
4088         if (syscred)
4089                 nd->nd_flag |= ND_USEGSSNAME;
4090         error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred,
4091             NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL);
4092         NFSCL_INCRSEQID(lp->nfsl_seqid, nd);
4093         if (error)
4094                 return (error);
4095         if (nd->nd_repstat == 0) {
4096                 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID);
4097                 lp->nfsl_stateid.seqid = *tl++;
4098                 lp->nfsl_stateid.other[0] = *tl++;
4099                 lp->nfsl_stateid.other[1] = *tl++;
4100                 lp->nfsl_stateid.other[2] = *tl;
4101         } else if (nd->nd_repstat == NFSERR_STALESTATEID)
4102                 nfscl_initiate_recovery(lp->nfsl_open->nfso_own->nfsow_clp);
4103 nfsmout:
4104         mbuf_freem(nd->nd_mrep);
4105         return (error);
4106 }
4107
4108 /*
4109  * The actual Lock RPC.
4110  */
4111 APPLESTATIC int
4112 nfsrpc_lock(struct nfsrv_descript *nd, struct nfsmount *nmp, vnode_t vp,
4113     u_int8_t *nfhp, int fhlen, struct nfscllockowner *lp, int newone,
4114     int reclaim, u_int64_t off, u_int64_t len, short type, struct ucred *cred,
4115     NFSPROC_T *p, int syscred)
4116 {
4117         u_int32_t *tl;
4118         int error, size;
4119         uint8_t own[NFSV4CL_LOCKNAMELEN + NFSX_V4FHMAX];
4120         struct nfsclsession *tsep;
4121
4122         nfscl_reqstart(nd, NFSPROC_LOCK, nmp, nfhp, fhlen, NULL, NULL, 0, 0);
4123         NFSM_BUILD(tl, u_int32_t *, 7 * NFSX_UNSIGNED);
4124         if (type == F_RDLCK)
4125                 *tl++ = txdr_unsigned(NFSV4LOCKT_READ);
4126         else
4127                 *tl++ = txdr_unsigned(NFSV4LOCKT_WRITE);
4128         *tl++ = txdr_unsigned(reclaim);
4129         txdr_hyper(off, tl);
4130         tl += 2;
4131         txdr_hyper(len, tl);
4132         tl += 2;
4133         if (newone) {
4134             *tl = newnfs_true;
4135             NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID +
4136                 2 * NFSX_UNSIGNED + NFSX_HYPER);
4137             *tl++ = txdr_unsigned(lp->nfsl_open->nfso_own->nfsow_seqid);
4138             if (NFSHASNFSV4N(nmp))
4139                 *tl++ = 0;
4140             else
4141                 *tl++ = lp->nfsl_open->nfso_stateid.seqid;
4142             *tl++ = lp->nfsl_open->nfso_stateid.other[0];
4143             *tl++ = lp->nfsl_open->nfso_stateid.other[1];
4144             *tl++ = lp->nfsl_open->nfso_stateid.other[2];
4145             *tl++ = txdr_unsigned(lp->nfsl_seqid);
4146             tsep = nfsmnt_mdssession(nmp);
4147             *tl++ = tsep->nfsess_clientid.lval[0];
4148             *tl = tsep->nfsess_clientid.lval[1];
4149             NFSBCOPY(lp->nfsl_owner, own, NFSV4CL_LOCKNAMELEN);
4150             NFSBCOPY(nfhp, &own[NFSV4CL_LOCKNAMELEN], fhlen);
4151             (void)nfsm_strtom(nd, own, NFSV4CL_LOCKNAMELEN + fhlen);
4152         } else {
4153             *tl = newnfs_false;
4154             NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID + NFSX_UNSIGNED);
4155             if (NFSHASNFSV4N(nmp))
4156                 *tl++ = 0;
4157             else
4158                 *tl++ = lp->nfsl_stateid.seqid;
4159             *tl++ = lp->nfsl_stateid.other[0];
4160             *tl++ = lp->nfsl_stateid.other[1];
4161             *tl++ = lp->nfsl_stateid.other[2];
4162             *tl = txdr_unsigned(lp->nfsl_seqid);
4163             if (nfstest_outofseq &&
4164                 (arc4random() % nfstest_outofseq) == 0)
4165                     *tl = txdr_unsigned(lp->nfsl_seqid + 1);
4166         }
4167         if (syscred)
4168                 nd->nd_flag |= ND_USEGSSNAME;
4169         error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, vp, p, cred,
4170             NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL);
4171         if (error)
4172                 return (error);
4173         if (newone)
4174             NFSCL_INCRSEQID(lp->nfsl_open->nfso_own->nfsow_seqid, nd);
4175         NFSCL_INCRSEQID(lp->nfsl_seqid, nd);
4176         if (nd->nd_repstat == 0) {
4177                 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID);
4178                 lp->nfsl_stateid.seqid = *tl++;
4179                 lp->nfsl_stateid.other[0] = *tl++;
4180                 lp->nfsl_stateid.other[1] = *tl++;
4181                 lp->nfsl_stateid.other[2] = *tl;
4182         } else if (nd->nd_repstat == NFSERR_DENIED) {
4183                 NFSM_DISSECT(tl, u_int32_t *, 8 * NFSX_UNSIGNED);
4184                 size = fxdr_unsigned(int, *(tl + 7));
4185                 if (size < 0 || size > NFSV4_OPAQUELIMIT)
4186                         error = EBADRPC;
4187                 if (!error)
4188                         error = nfsm_advance(nd, NFSM_RNDUP(size), -1);
4189         } else if (nd->nd_repstat == NFSERR_STALESTATEID)
4190                 nfscl_initiate_recovery(lp->nfsl_open->nfso_own->nfsow_clp);
4191 nfsmout:
4192         mbuf_freem(nd->nd_mrep);
4193         return (error);
4194 }
4195
4196 /*
4197  * nfs statfs rpc
4198  * (always called with the vp for the mount point)
4199  */
4200 APPLESTATIC int
4201 nfsrpc_statfs(vnode_t vp, struct nfsstatfs *sbp, struct nfsfsinfo *fsp,
4202     struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp,
4203     void *stuff)
4204 {
4205         u_int32_t *tl = NULL;
4206         struct nfsrv_descript nfsd, *nd = &nfsd;
4207         struct nfsmount *nmp;
4208         nfsattrbit_t attrbits;
4209         int error;
4210
4211         *attrflagp = 0;
4212         nmp = VFSTONFS(vnode_mount(vp));
4213         if (NFSHASNFSV4(nmp)) {
4214                 /*
4215                  * For V4, you actually do a getattr.
4216                  */
4217                 NFSCL_REQSTART(nd, NFSPROC_GETATTR, vp);
4218                 NFSSTATFS_GETATTRBIT(&attrbits);
4219                 (void) nfsrv_putattrbit(nd, &attrbits);
4220                 nd->nd_flag |= ND_USEGSSNAME;
4221                 error = nfscl_request(nd, vp, p, cred, stuff);
4222                 if (error)
4223                         return (error);
4224                 if (nd->nd_repstat == 0) {
4225                         error = nfsv4_loadattr(nd, NULL, nap, NULL, NULL, 0,
4226                             NULL, NULL, sbp, fsp, NULL, 0, NULL, NULL, NULL, p,
4227                             cred);
4228                         if (!error) {
4229                                 nmp->nm_fsid[0] = nap->na_filesid[0];
4230                                 nmp->nm_fsid[1] = nap->na_filesid[1];
4231                                 NFSSETHASSETFSID(nmp);
4232                                 *attrflagp = 1;
4233                         }
4234                 } else {
4235                         error = nd->nd_repstat;
4236                 }
4237                 if (error)
4238                         goto nfsmout;
4239         } else {
4240                 NFSCL_REQSTART(nd, NFSPROC_FSSTAT, vp);
4241                 error = nfscl_request(nd, vp, p, cred, stuff);
4242                 if (error)
4243                         return (error);
4244                 if (nd->nd_flag & ND_NFSV3) {
4245                         error = nfscl_postop_attr(nd, nap, attrflagp, stuff);
4246                         if (error)
4247                                 goto nfsmout;
4248                 }
4249                 if (nd->nd_repstat) {
4250                         error = nd->nd_repstat;
4251                         goto nfsmout;
4252                 }
4253                 NFSM_DISSECT(tl, u_int32_t *,
4254                     NFSX_STATFS(nd->nd_flag & ND_NFSV3));
4255         }
4256         if (NFSHASNFSV3(nmp)) {
4257                 sbp->sf_tbytes = fxdr_hyper(tl); tl += 2;
4258                 sbp->sf_fbytes = fxdr_hyper(tl); tl += 2;
4259                 sbp->sf_abytes = fxdr_hyper(tl); tl += 2;
4260                 sbp->sf_tfiles = fxdr_hyper(tl); tl += 2;
4261                 sbp->sf_ffiles = fxdr_hyper(tl); tl += 2;
4262                 sbp->sf_afiles = fxdr_hyper(tl); tl += 2;
4263                 sbp->sf_invarsec = fxdr_unsigned(u_int32_t, *tl);
4264         } else if (NFSHASNFSV4(nmp) == 0) {
4265                 sbp->sf_tsize = fxdr_unsigned(u_int32_t, *tl++);
4266                 sbp->sf_bsize = fxdr_unsigned(u_int32_t, *tl++);
4267                 sbp->sf_blocks = fxdr_unsigned(u_int32_t, *tl++);
4268                 sbp->sf_bfree = fxdr_unsigned(u_int32_t, *tl++);
4269                 sbp->sf_bavail = fxdr_unsigned(u_int32_t, *tl);
4270         }
4271 nfsmout:
4272         mbuf_freem(nd->nd_mrep);
4273         return (error);
4274 }
4275
4276 /*
4277  * nfs pathconf rpc
4278  */
4279 APPLESTATIC int
4280 nfsrpc_pathconf(vnode_t vp, struct nfsv3_pathconf *pc,
4281     struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp,
4282     void *stuff)
4283 {
4284         struct nfsrv_descript nfsd, *nd = &nfsd;
4285         struct nfsmount *nmp;
4286         u_int32_t *tl;
4287         nfsattrbit_t attrbits;
4288         int error;
4289
4290         *attrflagp = 0;
4291         nmp = VFSTONFS(vnode_mount(vp));
4292         if (NFSHASNFSV4(nmp)) {
4293                 /*
4294                  * For V4, you actually do a getattr.
4295                  */
4296                 NFSCL_REQSTART(nd, NFSPROC_GETATTR, vp);
4297                 NFSPATHCONF_GETATTRBIT(&attrbits);
4298                 (void) nfsrv_putattrbit(nd, &attrbits);
4299                 nd->nd_flag |= ND_USEGSSNAME;
4300                 error = nfscl_request(nd, vp, p, cred, stuff);
4301                 if (error)
4302                         return (error);
4303                 if (nd->nd_repstat == 0) {
4304                         error = nfsv4_loadattr(nd, NULL, nap, NULL, NULL, 0,
4305                             pc, NULL, NULL, NULL, NULL, 0, NULL, NULL, NULL, p,
4306                             cred);
4307                         if (!error)
4308                                 *attrflagp = 1;
4309                 } else {
4310                         error = nd->nd_repstat;
4311                 }
4312         } else {
4313                 NFSCL_REQSTART(nd, NFSPROC_PATHCONF, vp);
4314                 error = nfscl_request(nd, vp, p, cred, stuff);
4315                 if (error)
4316                         return (error);
4317                 error = nfscl_postop_attr(nd, nap, attrflagp, stuff);
4318                 if (nd->nd_repstat && !error)
4319                         error = nd->nd_repstat;
4320                 if (!error) {
4321                         NFSM_DISSECT(tl, u_int32_t *, NFSX_V3PATHCONF);
4322                         pc->pc_linkmax = fxdr_unsigned(u_int32_t, *tl++);
4323                         pc->pc_namemax = fxdr_unsigned(u_int32_t, *tl++);
4324                         pc->pc_notrunc = fxdr_unsigned(u_int32_t, *tl++);
4325                         pc->pc_chownrestricted =
4326                             fxdr_unsigned(u_int32_t, *tl++);
4327                         pc->pc_caseinsensitive =
4328                             fxdr_unsigned(u_int32_t, *tl++);
4329                         pc->pc_casepreserving = fxdr_unsigned(u_int32_t, *tl);
4330                 }
4331         }
4332 nfsmout:
4333         mbuf_freem(nd->nd_mrep);
4334         return (error);
4335 }
4336
4337 /*
4338  * nfs version 3 fsinfo rpc call
4339  */
4340 APPLESTATIC int
4341 nfsrpc_fsinfo(vnode_t vp, struct nfsfsinfo *fsp, struct ucred *cred,
4342     NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff)
4343 {
4344         u_int32_t *tl;
4345         struct nfsrv_descript nfsd, *nd = &nfsd;
4346         int error;
4347
4348         *attrflagp = 0;
4349         NFSCL_REQSTART(nd, NFSPROC_FSINFO, vp);
4350         error = nfscl_request(nd, vp, p, cred, stuff);
4351         if (error)
4352                 return (error);
4353         error = nfscl_postop_attr(nd, nap, attrflagp, stuff);
4354         if (nd->nd_repstat && !error)
4355                 error = nd->nd_repstat;
4356         if (!error) {
4357                 NFSM_DISSECT(tl, u_int32_t *, NFSX_V3FSINFO);
4358                 fsp->fs_rtmax = fxdr_unsigned(u_int32_t, *tl++);
4359                 fsp->fs_rtpref = fxdr_unsigned(u_int32_t, *tl++);
4360                 fsp->fs_rtmult = fxdr_unsigned(u_int32_t, *tl++);
4361                 fsp->fs_wtmax = fxdr_unsigned(u_int32_t, *tl++);
4362                 fsp->fs_wtpref = fxdr_unsigned(u_int32_t, *tl++);
4363                 fsp->fs_wtmult = fxdr_unsigned(u_int32_t, *tl++);
4364                 fsp->fs_dtpref = fxdr_unsigned(u_int32_t, *tl++);
4365                 fsp->fs_maxfilesize = fxdr_hyper(tl);
4366                 tl += 2;
4367                 fxdr_nfsv3time(tl, &fsp->fs_timedelta);
4368                 tl += 2;
4369                 fsp->fs_properties = fxdr_unsigned(u_int32_t, *tl);
4370         }
4371 nfsmout:
4372         mbuf_freem(nd->nd_mrep);
4373         return (error);
4374 }
4375
4376 /*
4377  * This function performs the Renew RPC.
4378  */
4379 APPLESTATIC int
4380 nfsrpc_renew(struct nfsclclient *clp, struct nfsclds *dsp, struct ucred *cred,
4381     NFSPROC_T *p)
4382 {
4383         u_int32_t *tl;
4384         struct nfsrv_descript nfsd;
4385         struct nfsrv_descript *nd = &nfsd;
4386         struct nfsmount *nmp;
4387         int error;
4388         struct nfssockreq *nrp;
4389         struct nfsclsession *tsep;
4390
4391         nmp = clp->nfsc_nmp;
4392         if (nmp == NULL)
4393                 return (0);
4394         if (dsp == NULL)
4395                 nfscl_reqstart(nd, NFSPROC_RENEW, nmp, NULL, 0, NULL, NULL, 0,
4396                     0);
4397         else
4398                 nfscl_reqstart(nd, NFSPROC_RENEW, nmp, NULL, 0, NULL,
4399                     &dsp->nfsclds_sess, 0, 0);
4400         if (!NFSHASNFSV4N(nmp)) {
4401                 /* NFSv4.1 just uses a Sequence Op and not a Renew. */
4402                 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
4403                 tsep = nfsmnt_mdssession(nmp);
4404                 *tl++ = tsep->nfsess_clientid.lval[0];
4405                 *tl = tsep->nfsess_clientid.lval[1];
4406         }
4407         nrp = NULL;
4408         if (dsp != NULL)
4409                 nrp = dsp->nfsclds_sockp;
4410         if (nrp == NULL)
4411                 /* If NULL, use the MDS socket. */
4412                 nrp = &nmp->nm_sockreq;
4413         nd->nd_flag |= ND_USEGSSNAME;
4414         if (dsp == NULL)
4415                 error = newnfs_request(nd, nmp, NULL, nrp, NULL, p, cred,
4416                     NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL);
4417         else {
4418                 error = newnfs_request(nd, nmp, NULL, nrp, NULL, p, cred,
4419                     NFS_PROG, NFS_VER4, NULL, 1, NULL, &dsp->nfsclds_sess);
4420                 if (error == ENXIO)
4421                         nfscl_cancelreqs(dsp);
4422         }
4423         if (error)
4424                 return (error);
4425         error = nd->nd_repstat;
4426         mbuf_freem(nd->nd_mrep);
4427         return (error);
4428 }
4429
4430 /*
4431  * This function performs the Releaselockowner RPC.
4432  */
4433 APPLESTATIC int
4434 nfsrpc_rellockown(struct nfsmount *nmp, struct nfscllockowner *lp,
4435     uint8_t *fh, int fhlen, struct ucred *cred, NFSPROC_T *p)
4436 {
4437         struct nfsrv_descript nfsd, *nd = &nfsd;
4438         u_int32_t *tl;
4439         int error;
4440         uint8_t own[NFSV4CL_LOCKNAMELEN + NFSX_V4FHMAX];
4441         struct nfsclsession *tsep;
4442
4443         if (NFSHASNFSV4N(nmp)) {
4444                 /* For NFSv4.1, do a FreeStateID. */
4445                 nfscl_reqstart(nd, NFSPROC_FREESTATEID, nmp, NULL, 0, NULL,
4446                     NULL, 0, 0);
4447                 nfsm_stateidtom(nd, &lp->nfsl_stateid, NFSSTATEID_PUTSTATEID);
4448         } else {
4449                 nfscl_reqstart(nd, NFSPROC_RELEASELCKOWN, nmp, NULL, 0, NULL,
4450                     NULL, 0, 0);
4451                 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
4452                 tsep = nfsmnt_mdssession(nmp);
4453                 *tl++ = tsep->nfsess_clientid.lval[0];
4454                 *tl = tsep->nfsess_clientid.lval[1];
4455                 NFSBCOPY(lp->nfsl_owner, own, NFSV4CL_LOCKNAMELEN);
4456                 NFSBCOPY(fh, &own[NFSV4CL_LOCKNAMELEN], fhlen);
4457                 (void)nfsm_strtom(nd, own, NFSV4CL_LOCKNAMELEN + fhlen);
4458         }
4459         nd->nd_flag |= ND_USEGSSNAME;
4460         error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred,
4461             NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL);
4462         if (error)
4463                 return (error);
4464         error = nd->nd_repstat;
4465         mbuf_freem(nd->nd_mrep);
4466         return (error);
4467 }
4468
4469 /*
4470  * This function performs the Compound to get the mount pt FH.
4471  */
4472 APPLESTATIC int
4473 nfsrpc_getdirpath(struct nfsmount *nmp, u_char *dirpath, struct ucred *cred,
4474     NFSPROC_T *p)
4475 {
4476         u_int32_t *tl;
4477         struct nfsrv_descript nfsd;
4478         struct nfsrv_descript *nd = &nfsd;
4479         u_char *cp, *cp2;
4480         int error, cnt, len, setnil;
4481         u_int32_t *opcntp;
4482
4483         nfscl_reqstart(nd, NFSPROC_PUTROOTFH, nmp, NULL, 0, &opcntp, NULL, 0,
4484             0);
4485         cp = dirpath;
4486         cnt = 0;
4487         do {
4488                 setnil = 0;
4489                 while (*cp == '/')
4490                         cp++;
4491                 cp2 = cp;
4492                 while (*cp2 != '\0' && *cp2 != '/')
4493                         cp2++;
4494                 if (*cp2 == '/') {
4495                         setnil = 1;
4496                         *cp2 = '\0';
4497                 }
4498                 if (cp2 != cp) {
4499                         NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
4500                         *tl = txdr_unsigned(NFSV4OP_LOOKUP);
4501                         nfsm_strtom(nd, cp, strlen(cp));
4502                         cnt++;
4503                 }
4504                 if (setnil)
4505                         *cp2++ = '/';
4506                 cp = cp2;
4507         } while (*cp != '\0');
4508         if (NFSHASNFSV4N(nmp))
4509                 /* Has a Sequence Op done by nfscl_reqstart(). */
4510                 *opcntp = txdr_unsigned(3 + cnt);
4511         else
4512                 *opcntp = txdr_unsigned(2 + cnt);
4513         NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
4514         *tl = txdr_unsigned(NFSV4OP_GETFH);
4515         nd->nd_flag |= ND_USEGSSNAME;
4516         error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred,
4517                 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL);
4518         if (error)
4519                 return (error);
4520         if (nd->nd_repstat == 0) {
4521                 NFSM_DISSECT(tl, u_int32_t *, (3 + 2 * cnt) * NFSX_UNSIGNED);
4522                 tl += (2 + 2 * cnt);
4523                 if ((len = fxdr_unsigned(int, *tl)) <= 0 ||
4524                         len > NFSX_FHMAX) {
4525                         nd->nd_repstat = NFSERR_BADXDR;
4526                 } else {
4527                         nd->nd_repstat = nfsrv_mtostr(nd, nmp->nm_fh, len);
4528                         if (nd->nd_repstat == 0)
4529                                 nmp->nm_fhsize = len;
4530                 }
4531         }
4532         error = nd->nd_repstat;
4533 nfsmout:
4534         mbuf_freem(nd->nd_mrep);
4535         return (error);
4536 }
4537
4538 /*
4539  * This function performs the Delegreturn RPC.
4540  */
4541 APPLESTATIC int
4542 nfsrpc_delegreturn(struct nfscldeleg *dp, struct ucred *cred,
4543     struct nfsmount *nmp, NFSPROC_T *p, int syscred)
4544 {
4545         u_int32_t *tl;
4546         struct nfsrv_descript nfsd;
4547         struct nfsrv_descript *nd = &nfsd;
4548         int error;
4549
4550         nfscl_reqstart(nd, NFSPROC_DELEGRETURN, nmp, dp->nfsdl_fh,
4551             dp->nfsdl_fhlen, NULL, NULL, 0, 0);
4552         NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID);
4553         if (NFSHASNFSV4N(nmp))
4554                 *tl++ = 0;
4555         else
4556                 *tl++ = dp->nfsdl_stateid.seqid;
4557         *tl++ = dp->nfsdl_stateid.other[0];
4558         *tl++ = dp->nfsdl_stateid.other[1];
4559         *tl = dp->nfsdl_stateid.other[2];
4560         if (syscred)
4561                 nd->nd_flag |= ND_USEGSSNAME;
4562         error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred,
4563             NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL);
4564         if (error)
4565                 return (error);
4566         error = nd->nd_repstat;
4567         mbuf_freem(nd->nd_mrep);
4568         return (error);
4569 }
4570
4571 /*
4572  * nfs getacl call.
4573  */
4574 APPLESTATIC int
4575 nfsrpc_getacl(vnode_t vp, struct ucred *cred, NFSPROC_T *p,
4576     struct acl *aclp, void *stuff)
4577 {
4578         struct nfsrv_descript nfsd, *nd = &nfsd;
4579         int error;
4580         nfsattrbit_t attrbits;
4581         struct nfsmount *nmp = VFSTONFS(vnode_mount(vp));
4582
4583         if (nfsrv_useacl == 0 || !NFSHASNFSV4(nmp))
4584                 return (EOPNOTSUPP);
4585         NFSCL_REQSTART(nd, NFSPROC_GETACL, vp);
4586         NFSZERO_ATTRBIT(&attrbits);
4587         NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_ACL);
4588         (void) nfsrv_putattrbit(nd, &attrbits);
4589         error = nfscl_request(nd, vp, p, cred, stuff);
4590         if (error)
4591                 return (error);
4592         if (!nd->nd_repstat)
4593                 error = nfsv4_loadattr(nd, vp, NULL, NULL, NULL, 0, NULL,
4594                     NULL, NULL, NULL, aclp, 0, NULL, NULL, NULL, p, cred);
4595         else
4596                 error = nd->nd_repstat;
4597         mbuf_freem(nd->nd_mrep);
4598         return (error);
4599 }
4600
4601 /*
4602  * nfs setacl call.
4603  */
4604 APPLESTATIC int
4605 nfsrpc_setacl(vnode_t vp, struct ucred *cred, NFSPROC_T *p,
4606     struct acl *aclp, void *stuff)
4607 {
4608         int error;
4609         struct nfsmount *nmp = VFSTONFS(vnode_mount(vp));
4610
4611         if (nfsrv_useacl == 0 || !NFSHASNFSV4(nmp))
4612                 return (EOPNOTSUPP);
4613         error = nfsrpc_setattr(vp, NULL, aclp, cred, p, NULL, NULL, stuff);
4614         return (error);
4615 }
4616
4617 /*
4618  * nfs setacl call.
4619  */
4620 static int
4621 nfsrpc_setaclrpc(vnode_t vp, struct ucred *cred, NFSPROC_T *p,
4622     struct acl *aclp, nfsv4stateid_t *stateidp, void *stuff)
4623 {
4624         struct nfsrv_descript nfsd, *nd = &nfsd;
4625         int error;
4626         nfsattrbit_t attrbits;
4627         struct nfsmount *nmp = VFSTONFS(vnode_mount(vp));
4628
4629         if (!NFSHASNFSV4(nmp))
4630                 return (EOPNOTSUPP);
4631         NFSCL_REQSTART(nd, NFSPROC_SETACL, vp);
4632         nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID);
4633         NFSZERO_ATTRBIT(&attrbits);
4634         NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_ACL);
4635         (void) nfsv4_fillattr(nd, vnode_mount(vp), vp, aclp, NULL, NULL, 0,
4636             &attrbits, NULL, NULL, 0, 0, 0, 0, (uint64_t)0, NULL);
4637         error = nfscl_request(nd, vp, p, cred, stuff);
4638         if (error)
4639                 return (error);
4640         /* Don't care about the pre/postop attributes */
4641         mbuf_freem(nd->nd_mrep);
4642         return (nd->nd_repstat);
4643 }
4644
4645 /*
4646  * Do the NFSv4.1 Exchange ID.
4647  */
4648 int
4649 nfsrpc_exchangeid(struct nfsmount *nmp, struct nfsclclient *clp,
4650     struct nfssockreq *nrp, uint32_t exchflags, struct nfsclds **dspp,
4651     struct ucred *cred, NFSPROC_T *p)
4652 {
4653         uint32_t *tl, v41flags;
4654         struct nfsrv_descript nfsd;
4655         struct nfsrv_descript *nd = &nfsd;
4656         struct nfsclds *dsp;
4657         struct timespec verstime;
4658         int error, len;
4659
4660         *dspp = NULL;
4661         nfscl_reqstart(nd, NFSPROC_EXCHANGEID, nmp, NULL, 0, NULL, NULL, 0, 0);
4662         NFSM_BUILD(tl, uint32_t *, 2 * NFSX_UNSIGNED);
4663         *tl++ = txdr_unsigned(nfsboottime.tv_sec);      /* Client owner */
4664         *tl = txdr_unsigned(clp->nfsc_rev);
4665         (void) nfsm_strtom(nd, clp->nfsc_id, clp->nfsc_idlen);
4666
4667         NFSM_BUILD(tl, uint32_t *, 3 * NFSX_UNSIGNED);
4668         *tl++ = txdr_unsigned(exchflags);
4669         *tl++ = txdr_unsigned(NFSV4EXCH_SP4NONE);
4670
4671         /* Set the implementation id4 */
4672         *tl = txdr_unsigned(1);
4673         (void) nfsm_strtom(nd, "freebsd.org", strlen("freebsd.org"));
4674         (void) nfsm_strtom(nd, version, strlen(version));
4675         NFSM_BUILD(tl, uint32_t *, NFSX_V4TIME);
4676         verstime.tv_sec = 1293840000;           /* Jan 1, 2011 */
4677         verstime.tv_nsec = 0;
4678         txdr_nfsv4time(&verstime, tl);
4679         nd->nd_flag |= ND_USEGSSNAME;
4680         error = newnfs_request(nd, nmp, NULL, nrp, NULL, p, cred,
4681             NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL);
4682         NFSCL_DEBUG(1, "exchangeid err=%d reps=%d\n", error,
4683             (int)nd->nd_repstat);
4684         if (error != 0)
4685                 return (error);
4686         if (nd->nd_repstat == 0) {
4687                 NFSM_DISSECT(tl, uint32_t *, 6 * NFSX_UNSIGNED + NFSX_HYPER);
4688                 len = fxdr_unsigned(int, *(tl + 7));
4689                 if (len < 0 || len > NFSV4_OPAQUELIMIT) {
4690                         error = NFSERR_BADXDR;
4691                         goto nfsmout;
4692                 }
4693                 dsp = malloc(sizeof(struct nfsclds) + len + 1, M_NFSCLDS,
4694                     M_WAITOK | M_ZERO);
4695                 dsp->nfsclds_expire = NFSD_MONOSEC + clp->nfsc_renew;
4696                 dsp->nfsclds_servownlen = len;
4697                 dsp->nfsclds_sess.nfsess_clientid.lval[0] = *tl++;
4698                 dsp->nfsclds_sess.nfsess_clientid.lval[1] = *tl++;
4699                 dsp->nfsclds_sess.nfsess_sequenceid =
4700                     fxdr_unsigned(uint32_t, *tl++);
4701                 v41flags = fxdr_unsigned(uint32_t, *tl);
4702                 if ((v41flags & NFSV4EXCH_USEPNFSMDS) != 0 &&
4703                     NFSHASPNFSOPT(nmp)) {
4704                         NFSCL_DEBUG(1, "set PNFS\n");
4705                         NFSLOCKMNT(nmp);
4706                         nmp->nm_state |= NFSSTA_PNFS;
4707                         NFSUNLOCKMNT(nmp);
4708                         dsp->nfsclds_flags |= NFSCLDS_MDS;
4709                 }
4710                 if ((v41flags & NFSV4EXCH_USEPNFSDS) != 0)
4711                         dsp->nfsclds_flags |= NFSCLDS_DS;
4712                 if (len > 0)
4713                         nd->nd_repstat = nfsrv_mtostr(nd,
4714                             dsp->nfsclds_serverown, len);
4715                 if (nd->nd_repstat == 0) {
4716                         mtx_init(&dsp->nfsclds_mtx, "nfsds", NULL, MTX_DEF);
4717                         mtx_init(&dsp->nfsclds_sess.nfsess_mtx, "nfssession",
4718                             NULL, MTX_DEF);
4719                         nfscl_initsessionslots(&dsp->nfsclds_sess);
4720                         *dspp = dsp;
4721                 } else
4722                         free(dsp, M_NFSCLDS);
4723         }
4724         error = nd->nd_repstat;
4725 nfsmout:
4726         mbuf_freem(nd->nd_mrep);
4727         return (error);
4728 }
4729
4730 /*
4731  * Do the NFSv4.1 Create Session.
4732  */
4733 int
4734 nfsrpc_createsession(struct nfsmount *nmp, struct nfsclsession *sep,
4735     struct nfssockreq *nrp, uint32_t sequenceid, int mds, struct ucred *cred,
4736     NFSPROC_T *p)
4737 {
4738         uint32_t crflags, maxval, *tl;
4739         struct nfsrv_descript nfsd;
4740         struct nfsrv_descript *nd = &nfsd;
4741         int error, irdcnt;
4742
4743         /* Make sure nm_rsize, nm_wsize is set. */
4744         if (nmp->nm_rsize > NFS_MAXBSIZE || nmp->nm_rsize == 0)
4745                 nmp->nm_rsize = NFS_MAXBSIZE;
4746         if (nmp->nm_wsize > NFS_MAXBSIZE || nmp->nm_wsize == 0)
4747                 nmp->nm_wsize = NFS_MAXBSIZE;
4748         nfscl_reqstart(nd, NFSPROC_CREATESESSION, nmp, NULL, 0, NULL, NULL, 0,
4749             0);
4750         NFSM_BUILD(tl, uint32_t *, 4 * NFSX_UNSIGNED);
4751         *tl++ = sep->nfsess_clientid.lval[0];
4752         *tl++ = sep->nfsess_clientid.lval[1];
4753         *tl++ = txdr_unsigned(sequenceid);
4754         crflags = (NFSMNT_RDONLY(nmp->nm_mountp) ? 0 : NFSV4CRSESS_PERSIST);
4755         if (nfscl_enablecallb != 0 && nfs_numnfscbd > 0 && mds != 0)
4756                 crflags |= NFSV4CRSESS_CONNBACKCHAN;
4757         *tl = txdr_unsigned(crflags);
4758
4759         /* Fill in fore channel attributes. */
4760         NFSM_BUILD(tl, uint32_t *, 7 * NFSX_UNSIGNED);
4761         *tl++ = 0;                              /* Header pad size */
4762         *tl++ = txdr_unsigned(nmp->nm_wsize + NFS_MAXXDR);/* Max request size */
4763         *tl++ = txdr_unsigned(nmp->nm_rsize + NFS_MAXXDR);/* Max reply size */
4764         *tl++ = txdr_unsigned(4096);            /* Max response size cached */
4765         *tl++ = txdr_unsigned(20);              /* Max operations */
4766         *tl++ = txdr_unsigned(64);              /* Max slots */
4767         *tl = 0;                                /* No rdma ird */
4768
4769         /* Fill in back channel attributes. */
4770         NFSM_BUILD(tl, uint32_t *, 7 * NFSX_UNSIGNED);
4771         *tl++ = 0;                              /* Header pad size */
4772         *tl++ = txdr_unsigned(10000);           /* Max request size */
4773         *tl++ = txdr_unsigned(10000);           /* Max response size */
4774         *tl++ = txdr_unsigned(4096);            /* Max response size cached */
4775         *tl++ = txdr_unsigned(4);               /* Max operations */
4776         *tl++ = txdr_unsigned(NFSV4_CBSLOTS);   /* Max slots */
4777         *tl = 0;                                /* No rdma ird */
4778
4779         NFSM_BUILD(tl, uint32_t *, 8 * NFSX_UNSIGNED);
4780         *tl++ = txdr_unsigned(NFS_CALLBCKPROG); /* Call back prog # */
4781
4782         /* Allow AUTH_SYS callbacks as uid, gid == 0. */
4783         *tl++ = txdr_unsigned(1);               /* Auth_sys only */
4784         *tl++ = txdr_unsigned(AUTH_SYS);        /* AUTH_SYS type */
4785         *tl++ = txdr_unsigned(nfsboottime.tv_sec); /* time stamp */
4786         *tl++ = 0;                              /* Null machine name */
4787         *tl++ = 0;                              /* Uid == 0 */
4788         *tl++ = 0;                              /* Gid == 0 */
4789         *tl = 0;                                /* No additional gids */
4790         nd->nd_flag |= ND_USEGSSNAME;
4791         error = newnfs_request(nd, nmp, NULL, nrp, NULL, p, cred, NFS_PROG,
4792             NFS_VER4, NULL, 1, NULL, NULL);
4793         if (error != 0)
4794                 return (error);
4795         if (nd->nd_repstat == 0) {
4796                 NFSM_DISSECT(tl, uint32_t *, NFSX_V4SESSIONID +
4797                     2 * NFSX_UNSIGNED);
4798                 bcopy(tl, sep->nfsess_sessionid, NFSX_V4SESSIONID);
4799                 tl += NFSX_V4SESSIONID / NFSX_UNSIGNED;
4800                 sep->nfsess_sequenceid = fxdr_unsigned(uint32_t, *tl++);
4801                 crflags = fxdr_unsigned(uint32_t, *tl);
4802                 if ((crflags & NFSV4CRSESS_PERSIST) != 0 && mds != 0) {
4803                         NFSLOCKMNT(nmp);
4804                         nmp->nm_state |= NFSSTA_SESSPERSIST;
4805                         NFSUNLOCKMNT(nmp);
4806                 }
4807
4808                 /* Get the fore channel slot count. */
4809                 NFSM_DISSECT(tl, uint32_t *, 7 * NFSX_UNSIGNED);
4810                 tl++;                   /* Skip the header pad size. */
4811
4812                 /* Make sure nm_wsize is small enough. */
4813                 maxval = fxdr_unsigned(uint32_t, *tl++);
4814                 while (maxval < nmp->nm_wsize + NFS_MAXXDR) {
4815                         if (nmp->nm_wsize > 8096)
4816                                 nmp->nm_wsize /= 2;
4817                         else
4818                                 break;
4819                 }
4820
4821                 /* Make sure nm_rsize is small enough. */
4822                 maxval = fxdr_unsigned(uint32_t, *tl++);
4823                 while (maxval < nmp->nm_rsize + NFS_MAXXDR) {
4824                         if (nmp->nm_rsize > 8096)
4825                                 nmp->nm_rsize /= 2;
4826                         else
4827                                 break;
4828                 }
4829
4830                 sep->nfsess_maxcache = fxdr_unsigned(int, *tl++);
4831                 tl++;
4832                 sep->nfsess_foreslots = fxdr_unsigned(uint16_t, *tl++);
4833                 NFSCL_DEBUG(4, "fore slots=%d\n", (int)sep->nfsess_foreslots);
4834                 irdcnt = fxdr_unsigned(int, *tl);
4835                 if (irdcnt > 0)
4836                         NFSM_DISSECT(tl, uint32_t *, irdcnt * NFSX_UNSIGNED);
4837
4838                 /* and the back channel slot count. */
4839                 NFSM_DISSECT(tl, uint32_t *, 7 * NFSX_UNSIGNED);
4840                 tl += 5;
4841                 sep->nfsess_backslots = fxdr_unsigned(uint16_t, *tl);
4842                 NFSCL_DEBUG(4, "back slots=%d\n", (int)sep->nfsess_backslots);
4843         }
4844         error = nd->nd_repstat;
4845 nfsmout:
4846         mbuf_freem(nd->nd_mrep);
4847         return (error);
4848 }
4849
4850 /*
4851  * Do the NFSv4.1 Destroy Session.
4852  */
4853 int
4854 nfsrpc_destroysession(struct nfsmount *nmp, struct nfsclclient *clp,
4855     struct ucred *cred, NFSPROC_T *p)
4856 {
4857         uint32_t *tl;
4858         struct nfsrv_descript nfsd;
4859         struct nfsrv_descript *nd = &nfsd;
4860         int error;
4861         struct nfsclsession *tsep;
4862
4863         nfscl_reqstart(nd, NFSPROC_DESTROYSESSION, nmp, NULL, 0, NULL, NULL, 0,
4864             0);
4865         NFSM_BUILD(tl, uint32_t *, NFSX_V4SESSIONID);
4866         tsep = nfsmnt_mdssession(nmp);
4867         bcopy(tsep->nfsess_sessionid, tl, NFSX_V4SESSIONID);
4868         nd->nd_flag |= ND_USEGSSNAME;
4869         error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred,
4870             NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL);
4871         if (error != 0)
4872                 return (error);
4873         error = nd->nd_repstat;
4874         mbuf_freem(nd->nd_mrep);
4875         return (error);
4876 }
4877
4878 /*
4879  * Do the NFSv4.1 Destroy Client.
4880  */
4881 int
4882 nfsrpc_destroyclient(struct nfsmount *nmp, struct nfsclclient *clp,
4883     struct ucred *cred, NFSPROC_T *p)
4884 {
4885         uint32_t *tl;
4886         struct nfsrv_descript nfsd;
4887         struct nfsrv_descript *nd = &nfsd;
4888         int error;
4889         struct nfsclsession *tsep;
4890
4891         nfscl_reqstart(nd, NFSPROC_DESTROYCLIENT, nmp, NULL, 0, NULL, NULL, 0,
4892             0);
4893         NFSM_BUILD(tl, uint32_t *, 2 * NFSX_UNSIGNED);
4894         tsep = nfsmnt_mdssession(nmp);
4895         *tl++ = tsep->nfsess_clientid.lval[0];
4896         *tl = tsep->nfsess_clientid.lval[1];
4897         nd->nd_flag |= ND_USEGSSNAME;
4898         error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred,
4899             NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL);
4900         if (error != 0)
4901                 return (error);
4902         error = nd->nd_repstat;
4903         mbuf_freem(nd->nd_mrep);
4904         return (error);
4905 }
4906
4907 /*
4908  * Do the NFSv4.1 LayoutGet.
4909  */
4910 static int
4911 nfsrpc_layoutget(struct nfsmount *nmp, uint8_t *fhp, int fhlen, int iomode,
4912     uint64_t offset, uint64_t len, uint64_t minlen, int layouttype,
4913     int layoutlen, nfsv4stateid_t *stateidp, int *retonclosep,
4914     struct nfsclflayouthead *flhp, struct ucred *cred, NFSPROC_T *p,
4915     void *stuff)
4916 {
4917         struct nfsrv_descript nfsd, *nd = &nfsd;
4918         int error;
4919
4920         nfscl_reqstart(nd, NFSPROC_LAYOUTGET, nmp, fhp, fhlen, NULL, NULL, 0,
4921             0);
4922         nfsrv_setuplayoutget(nd, iomode, offset, len, minlen, stateidp,
4923             layouttype, layoutlen, 0);
4924         nd->nd_flag |= ND_USEGSSNAME;
4925         error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred,
4926             NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL);
4927         NFSCL_DEBUG(4, "layget err=%d st=%d\n", error, nd->nd_repstat);
4928         if (error != 0)
4929                 return (error);
4930         if (nd->nd_repstat == 0)
4931                 error = nfsrv_parselayoutget(nd, stateidp, retonclosep, flhp);
4932         if (error == 0 && nd->nd_repstat != 0)
4933                 error = nd->nd_repstat;
4934         mbuf_freem(nd->nd_mrep);
4935         return (error);
4936 }
4937
4938 /*
4939  * Do the NFSv4.1 Get Device Info.
4940  */
4941 int
4942 nfsrpc_getdeviceinfo(struct nfsmount *nmp, uint8_t *deviceid, int layouttype,
4943     uint32_t *notifybitsp, struct nfscldevinfo **ndip, struct ucred *cred,
4944     NFSPROC_T *p)
4945 {
4946         uint32_t cnt, *tl, vers, minorvers;
4947         struct nfsrv_descript nfsd;
4948         struct nfsrv_descript *nd = &nfsd;
4949         struct sockaddr_in sin, ssin;
4950         struct sockaddr_in6 sin6, ssin6;
4951         struct nfsclds *dsp = NULL, **dspp, **gotdspp;
4952         struct nfscldevinfo *ndi;
4953         int addrcnt = 0, bitcnt, error, gotvers, i, isudp, j, stripecnt;
4954         uint8_t stripeindex;
4955         sa_family_t af, safilled;
4956
4957         *ndip = NULL;
4958         ndi = NULL;
4959         gotdspp = NULL;
4960         nfscl_reqstart(nd, NFSPROC_GETDEVICEINFO, nmp, NULL, 0, NULL, NULL, 0,
4961             0);
4962         NFSM_BUILD(tl, uint32_t *, NFSX_V4DEVICEID + 3 * NFSX_UNSIGNED);
4963         NFSBCOPY(deviceid, tl, NFSX_V4DEVICEID);
4964         tl += (NFSX_V4DEVICEID / NFSX_UNSIGNED);
4965         *tl++ = txdr_unsigned(layouttype);
4966         *tl++ = txdr_unsigned(100000);
4967         if (notifybitsp != NULL && *notifybitsp != 0) {
4968                 *tl = txdr_unsigned(1);         /* One word of bits. */
4969                 NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED);
4970                 *tl = txdr_unsigned(*notifybitsp);
4971         } else
4972                 *tl = txdr_unsigned(0);
4973         nd->nd_flag |= ND_USEGSSNAME;
4974         error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred,
4975             NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL);
4976         if (error != 0)
4977                 return (error);
4978         if (nd->nd_repstat == 0) {
4979                 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED);
4980                 if (layouttype != fxdr_unsigned(int, *tl))
4981                         printf("EEK! devinfo layout type not same!\n");
4982                 if (layouttype == NFSLAYOUT_NFSV4_1_FILES) {
4983                         NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED);
4984                         stripecnt = fxdr_unsigned(int, *tl);
4985                         NFSCL_DEBUG(4, "stripecnt=%d\n", stripecnt);
4986                         if (stripecnt < 1 || stripecnt > 4096) {
4987                                 printf("pNFS File layout devinfo stripecnt %d:"
4988                                     " out of range\n", stripecnt);
4989                                 error = NFSERR_BADXDR;
4990                                 goto nfsmout;
4991                         }
4992                         NFSM_DISSECT(tl, uint32_t *, (stripecnt + 1) *
4993                             NFSX_UNSIGNED);
4994                         addrcnt = fxdr_unsigned(int, *(tl + stripecnt));
4995                         NFSCL_DEBUG(4, "addrcnt=%d\n", addrcnt);
4996                         if (addrcnt < 1 || addrcnt > 128) {
4997                                 printf("NFS devinfo addrcnt %d: out of range\n",
4998                                     addrcnt);
4999                                 error = NFSERR_BADXDR;
5000                                 goto nfsmout;
5001                         }
5002
5003                         /*
5004                          * Now we know how many stripe indices and addresses, so
5005                          * we can allocate the structure the correct size.
5006                          */
5007                         i = (stripecnt * sizeof(uint8_t)) /
5008                             sizeof(struct nfsclds *) + 1;
5009                         NFSCL_DEBUG(4, "stripeindices=%d\n", i);
5010                         ndi = malloc(sizeof(*ndi) + (addrcnt + i) *
5011                             sizeof(struct nfsclds *), M_NFSDEVINFO, M_WAITOK |
5012                             M_ZERO);
5013                         NFSBCOPY(deviceid, ndi->nfsdi_deviceid,
5014                             NFSX_V4DEVICEID);
5015                         ndi->nfsdi_refcnt = 0;
5016                         ndi->nfsdi_flags = NFSDI_FILELAYOUT;
5017                         ndi->nfsdi_stripecnt = stripecnt;
5018                         ndi->nfsdi_addrcnt = addrcnt;
5019                         /* Fill in the stripe indices. */
5020                         for (i = 0; i < stripecnt; i++) {
5021                                 stripeindex = fxdr_unsigned(uint8_t, *tl++);
5022                                 NFSCL_DEBUG(4, "stripeind=%d\n", stripeindex);
5023                                 if (stripeindex >= addrcnt) {
5024                                         printf("pNFS File Layout devinfo"
5025                                             " stripeindex %d: too big\n",
5026                                             (int)stripeindex);
5027                                         error = NFSERR_BADXDR;
5028                                         goto nfsmout;
5029                                 }
5030                                 nfsfldi_setstripeindex(ndi, i, stripeindex);
5031                         }
5032                 } else if (layouttype == NFSLAYOUT_FLEXFILE) {
5033                         /* For Flex File, we only get one address list. */
5034                         ndi = malloc(sizeof(*ndi) + sizeof(struct nfsclds *),
5035                             M_NFSDEVINFO, M_WAITOK | M_ZERO);
5036                         NFSBCOPY(deviceid, ndi->nfsdi_deviceid,
5037                             NFSX_V4DEVICEID);
5038                         ndi->nfsdi_refcnt = 0;
5039                         ndi->nfsdi_flags = NFSDI_FLEXFILE;
5040                         addrcnt = ndi->nfsdi_addrcnt = 1;
5041                 }
5042
5043                 /* Now, dissect the server address(es). */
5044                 safilled = AF_UNSPEC;
5045                 for (i = 0; i < addrcnt; i++) {
5046                         NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED);
5047                         cnt = fxdr_unsigned(uint32_t, *tl);
5048                         if (cnt == 0) {
5049                                 printf("NFS devinfo 0 len addrlist\n");
5050                                 error = NFSERR_BADXDR;
5051                                 goto nfsmout;
5052                         }
5053                         dspp = nfsfldi_addr(ndi, i);
5054                         safilled = AF_UNSPEC;
5055                         for (j = 0; j < cnt; j++) {
5056                                 error = nfsv4_getipaddr(nd, &sin, &sin6, &af,
5057                                     &isudp);
5058                                 if (error != 0 && error != EPERM) {
5059                                         error = NFSERR_BADXDR;
5060                                         goto nfsmout;
5061                                 }
5062                                 if (error == 0 && isudp == 0) {
5063                                         /*
5064                                          * The priority is:
5065                                          * - Same address family.
5066                                          * Save the address and dspp, so that
5067                                          * the connection can be done after
5068                                          * parsing is complete.
5069                                          */
5070                                         if (safilled == AF_UNSPEC ||
5071                                             (af == nmp->nm_nam->sa_family &&
5072                                              safilled != nmp->nm_nam->sa_family)
5073                                            ) {
5074                                                 if (af == AF_INET)
5075                                                         ssin = sin;
5076                                                 else
5077                                                         ssin6 = sin6;
5078                                                 safilled = af;
5079                                                 gotdspp = dspp;
5080                                         }
5081                                 }
5082                         }
5083                 }
5084
5085                 gotvers = NFS_VER4;     /* Always NFSv4 for File Layout. */
5086                 /* For Flex File, we will take one of the versions to use. */
5087                 if (layouttype == NFSLAYOUT_FLEXFILE) {
5088                         NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED);
5089                         j = fxdr_unsigned(int, *tl);
5090                         if (j < 1 || j > NFSDEV_MAXVERS) {
5091                                 printf("pNFS: too many versions\n");
5092                                 error = NFSERR_BADXDR;
5093                                 goto nfsmout;
5094                         }
5095                         gotvers = 0;
5096                         for (i = 0; i < j; i++) {
5097                                 NFSM_DISSECT(tl, uint32_t *, 5 * NFSX_UNSIGNED);
5098                                 vers = fxdr_unsigned(uint32_t, *tl++);
5099                                 minorvers = fxdr_unsigned(uint32_t, *tl++);
5100                                 if ((vers == NFS_VER4 && minorvers ==
5101                                     NFSV41_MINORVERSION) || (vers == NFS_VER3 &&
5102                                     gotvers == 0)) {
5103                                         gotvers = vers;
5104                                         /* We'll take this one. */
5105                                         ndi->nfsdi_versindex = i;
5106                                         ndi->nfsdi_vers = vers;
5107                                         ndi->nfsdi_minorvers = minorvers;
5108                                         ndi->nfsdi_rsize = fxdr_unsigned(
5109                                             uint32_t, *tl++);
5110                                         ndi->nfsdi_wsize = fxdr_unsigned(
5111                                             uint32_t, *tl++);
5112                                         if (*tl == newnfs_true)
5113                                                 ndi->nfsdi_flags |=
5114                                                     NFSDI_TIGHTCOUPLED;
5115                                         else
5116                                                 ndi->nfsdi_flags &=
5117                                                     ~NFSDI_TIGHTCOUPLED;
5118                                 }
5119                         }
5120                         if (gotvers == 0) {
5121                                 printf("pNFS: no NFSv3 or NFSv4.1\n");
5122                                 error = NFSERR_BADXDR;
5123                                 goto nfsmout;
5124                         }
5125                 }
5126
5127                 /* And the notify bits. */
5128                 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED);
5129                 bitcnt = fxdr_unsigned(int, *tl);
5130                 if (bitcnt > 0) {
5131                         NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED);
5132                         if (notifybitsp != NULL)
5133                                 *notifybitsp =
5134                                     fxdr_unsigned(uint32_t, *tl);
5135                 }
5136                 if (safilled != AF_UNSPEC) {
5137                         KASSERT(ndi != NULL, ("ndi is NULL"));
5138                         *ndip = ndi;
5139                 } else
5140                         error = EPERM;
5141                 if (error == 0) {
5142                         /*
5143                          * Now we can do a TCP connection for the correct
5144                          * NFS version and IP address.
5145                          */
5146                         error = nfsrpc_fillsa(nmp, &ssin, &ssin6, safilled,
5147                             gotvers, &dsp, p);
5148                 }
5149                 if (error == 0) {
5150                         KASSERT(gotdspp != NULL, ("gotdspp is NULL"));
5151                         *gotdspp = dsp;
5152                 }
5153         }
5154         if (nd->nd_repstat != 0 && error == 0)
5155                 error = nd->nd_repstat;
5156 nfsmout:
5157         if (error != 0 && ndi != NULL)
5158                 nfscl_freedevinfo(ndi);
5159         mbuf_freem(nd->nd_mrep);
5160         return (error);
5161 }
5162
5163 /*
5164  * Do the NFSv4.1 LayoutCommit.
5165  */
5166 int
5167 nfsrpc_layoutcommit(struct nfsmount *nmp, uint8_t *fh, int fhlen, int reclaim,
5168     uint64_t off, uint64_t len, uint64_t lastbyte, nfsv4stateid_t *stateidp,
5169     int layouttype, struct ucred *cred, NFSPROC_T *p, void *stuff)
5170 {
5171         uint32_t *tl;
5172         struct nfsrv_descript nfsd, *nd = &nfsd;
5173         int error;
5174
5175         nfscl_reqstart(nd, NFSPROC_LAYOUTCOMMIT, nmp, fh, fhlen, NULL, NULL,
5176             0, 0);
5177         NFSM_BUILD(tl, uint32_t *, 5 * NFSX_UNSIGNED + 3 * NFSX_HYPER +
5178             NFSX_STATEID);
5179         txdr_hyper(off, tl);
5180         tl += 2;
5181         txdr_hyper(len, tl);
5182         tl += 2;
5183         if (reclaim != 0)
5184                 *tl++ = newnfs_true;
5185         else
5186                 *tl++ = newnfs_false;
5187         *tl++ = txdr_unsigned(stateidp->seqid);
5188         *tl++ = stateidp->other[0];
5189         *tl++ = stateidp->other[1];
5190         *tl++ = stateidp->other[2];
5191         *tl++ = newnfs_true;
5192         if (lastbyte < off)
5193                 lastbyte = off;
5194         else if (lastbyte >= (off + len))
5195                 lastbyte = off + len - 1;
5196         txdr_hyper(lastbyte, tl);
5197         tl += 2;
5198         *tl++ = newnfs_false;
5199         *tl++ = txdr_unsigned(layouttype);
5200         /* All supported layouts are 0 length. */
5201         *tl = txdr_unsigned(0);
5202         nd->nd_flag |= ND_USEGSSNAME;
5203         error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred,
5204             NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL);
5205         if (error != 0)
5206                 return (error);
5207         error = nd->nd_repstat;
5208         mbuf_freem(nd->nd_mrep);
5209         return (error);
5210 }
5211
5212 /*
5213  * Do the NFSv4.1 LayoutReturn.
5214  */
5215 int
5216 nfsrpc_layoutreturn(struct nfsmount *nmp, uint8_t *fh, int fhlen, int reclaim,
5217     int layouttype, uint32_t iomode, int layoutreturn, uint64_t offset,
5218     uint64_t len, nfsv4stateid_t *stateidp, struct ucred *cred, NFSPROC_T *p,
5219     uint32_t stat, uint32_t op, char *devid)
5220 {
5221         uint32_t *tl;
5222         struct nfsrv_descript nfsd, *nd = &nfsd;
5223         uint64_t tu64;
5224         int error;
5225
5226         nfscl_reqstart(nd, NFSPROC_LAYOUTRETURN, nmp, fh, fhlen, NULL, NULL,
5227             0, 0);
5228         NFSM_BUILD(tl, uint32_t *, 4 * NFSX_UNSIGNED);
5229         if (reclaim != 0)
5230                 *tl++ = newnfs_true;
5231         else
5232                 *tl++ = newnfs_false;
5233         *tl++ = txdr_unsigned(layouttype);
5234         *tl++ = txdr_unsigned(iomode);
5235         *tl = txdr_unsigned(layoutreturn);
5236         if (layoutreturn == NFSLAYOUTRETURN_FILE) {
5237                 NFSM_BUILD(tl, uint32_t *, 2 * NFSX_HYPER + NFSX_STATEID +
5238                     NFSX_UNSIGNED);
5239                 txdr_hyper(offset, tl);
5240                 tl += 2;
5241                 txdr_hyper(len, tl);
5242                 tl += 2;
5243                 NFSCL_DEBUG(4, "layoutret stseq=%d\n", (int)stateidp->seqid);
5244                 *tl++ = txdr_unsigned(stateidp->seqid);
5245                 *tl++ = stateidp->other[0];
5246                 *tl++ = stateidp->other[1];
5247                 *tl++ = stateidp->other[2];
5248                 if (layouttype == NFSLAYOUT_NFSV4_1_FILES)
5249                         *tl = txdr_unsigned(0);
5250                 else if (layouttype == NFSLAYOUT_FLEXFILE) {
5251                         if (stat != 0) {
5252                                 *tl = txdr_unsigned(2 * NFSX_HYPER +
5253                                     NFSX_STATEID + NFSX_V4DEVICEID + 5 *
5254                                     NFSX_UNSIGNED);
5255                                 NFSM_BUILD(tl, uint32_t *, 2 * NFSX_HYPER +
5256                                     NFSX_STATEID + NFSX_V4DEVICEID + 5 *
5257                                     NFSX_UNSIGNED);
5258                                 *tl++ = txdr_unsigned(1);       /* One error. */
5259                                 tu64 = 0;                       /* Offset. */
5260                                 txdr_hyper(tu64, tl); tl += 2;
5261                                 tu64 = UINT64_MAX;              /* Length. */
5262                                 txdr_hyper(tu64, tl); tl += 2;
5263                                 NFSBCOPY(stateidp, tl, NFSX_STATEID);
5264                                 tl += (NFSX_STATEID / NFSX_UNSIGNED);
5265                                 *tl++ = txdr_unsigned(1);       /* One error. */
5266                                 NFSBCOPY(devid, tl, NFSX_V4DEVICEID);
5267                                 tl += (NFSX_V4DEVICEID / NFSX_UNSIGNED);
5268                                 *tl++ = txdr_unsigned(stat);
5269                                 *tl++ = txdr_unsigned(op);
5270                         } else {
5271                                 *tl = txdr_unsigned(2 * NFSX_UNSIGNED);
5272                                 NFSM_BUILD(tl, uint32_t *, 2 * NFSX_UNSIGNED);
5273                                 /* No ioerrs. */
5274                                 *tl++ = 0;
5275                         }
5276                         *tl = 0;        /* No stats yet. */
5277                 }
5278         }
5279         nd->nd_flag |= ND_USEGSSNAME;
5280         error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred,
5281             NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL);
5282         if (error != 0)
5283                 return (error);
5284         if (nd->nd_repstat == 0) {
5285                 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED);
5286                 if (*tl != 0) {
5287                         NFSM_DISSECT(tl, uint32_t *, NFSX_STATEID);
5288                         stateidp->seqid = fxdr_unsigned(uint32_t, *tl++);
5289                         stateidp->other[0] = *tl++;
5290                         stateidp->other[1] = *tl++;
5291                         stateidp->other[2] = *tl;
5292                 }
5293         } else
5294                 error = nd->nd_repstat;
5295 nfsmout:
5296         mbuf_freem(nd->nd_mrep);
5297         return (error);
5298 }
5299
5300 /*
5301  * Acquire a layout and devinfo, if possible. The caller must have acquired
5302  * a reference count on the nfsclclient structure before calling this.
5303  * Return the layout in lypp with a reference count on it, if successful.
5304  */
5305 static int
5306 nfsrpc_getlayout(struct nfsmount *nmp, vnode_t vp, struct nfsfh *nfhp,
5307     int iomode, uint32_t *notifybitsp, nfsv4stateid_t *stateidp, uint64_t off,
5308     struct nfscllayout **lypp, struct ucred *cred, NFSPROC_T *p)
5309 {
5310         struct nfscllayout *lyp;
5311         struct nfsclflayout *flp;
5312         struct nfsclflayouthead flh;
5313         int error = 0, islocked, layoutlen, layouttype, recalled, retonclose;
5314         nfsv4stateid_t stateid;
5315         struct nfsclsession *tsep;
5316
5317         *lypp = NULL;
5318         if (NFSHASFLEXFILE(nmp))
5319                 layouttype = NFSLAYOUT_FLEXFILE;
5320         else
5321                 layouttype = NFSLAYOUT_NFSV4_1_FILES;
5322         /*
5323          * If lyp is returned non-NULL, there will be a refcnt (shared lock)
5324          * on it, iff flp != NULL or a lock (exclusive lock) on it iff
5325          * flp == NULL.
5326          */
5327         lyp = nfscl_getlayout(nmp->nm_clp, nfhp->nfh_fh, nfhp->nfh_len,
5328             off, &flp, &recalled);
5329         islocked = 0;
5330         if (lyp == NULL || flp == NULL) {
5331                 if (recalled != 0)
5332                         return (EIO);
5333                 LIST_INIT(&flh);
5334                 tsep = nfsmnt_mdssession(nmp);
5335                 layoutlen = tsep->nfsess_maxcache -
5336                     (NFSX_STATEID + 3 * NFSX_UNSIGNED);
5337                 if (lyp == NULL) {
5338                         stateid.seqid = 0;
5339                         stateid.other[0] = stateidp->other[0];
5340                         stateid.other[1] = stateidp->other[1];
5341                         stateid.other[2] = stateidp->other[2];
5342                         error = nfsrpc_layoutget(nmp, nfhp->nfh_fh,
5343                             nfhp->nfh_len, iomode, (uint64_t)0, UINT64_MAX,
5344                             (uint64_t)0, layouttype, layoutlen, &stateid,
5345                             &retonclose, &flh, cred, p, NULL);
5346                 } else {
5347                         islocked = 1;
5348                         stateid.seqid = lyp->nfsly_stateid.seqid;
5349                         stateid.other[0] = lyp->nfsly_stateid.other[0];
5350                         stateid.other[1] = lyp->nfsly_stateid.other[1];
5351                         stateid.other[2] = lyp->nfsly_stateid.other[2];
5352                         error = nfsrpc_layoutget(nmp, nfhp->nfh_fh,
5353                             nfhp->nfh_len, iomode, off, UINT64_MAX,
5354                             (uint64_t)0, layouttype, layoutlen, &stateid,
5355                             &retonclose, &flh, cred, p, NULL);
5356                 }
5357                 error = nfsrpc_layoutgetres(nmp, vp, nfhp->nfh_fh,
5358                     nfhp->nfh_len, &stateid, retonclose, notifybitsp, &lyp,
5359                     &flh, layouttype, error, NULL, cred, p);
5360                 if (error == 0)
5361                         *lypp = lyp;
5362                 else if (islocked != 0)
5363                         nfscl_rellayout(lyp, 1);
5364         } else
5365                 *lypp = lyp;
5366         return (error);
5367 }
5368
5369 /*
5370  * Do a TCP connection plus exchange id and create session.
5371  * If successful, a "struct nfsclds" is linked into the list for the
5372  * mount point and a pointer to it is returned.
5373  */
5374 static int
5375 nfsrpc_fillsa(struct nfsmount *nmp, struct sockaddr_in *sin,
5376     struct sockaddr_in6 *sin6, sa_family_t af, int vers, struct nfsclds **dspp,
5377     NFSPROC_T *p)
5378 {
5379         struct sockaddr_in *msad, *sad;
5380         struct sockaddr_in6 *msad6, *sad6;
5381         struct nfsclclient *clp;
5382         struct nfssockreq *nrp;
5383         struct nfsclds *dsp, *tdsp;
5384         int error;
5385         enum nfsclds_state retv;
5386         uint32_t sequenceid;
5387
5388         KASSERT(nmp->nm_sockreq.nr_cred != NULL,
5389             ("nfsrpc_fillsa: NULL nr_cred"));
5390         NFSLOCKCLSTATE();
5391         clp = nmp->nm_clp;
5392         NFSUNLOCKCLSTATE();
5393         if (clp == NULL)
5394                 return (EPERM);
5395         if (af == AF_INET) {
5396                 NFSLOCKMNT(nmp);
5397                 /*
5398                  * Check to see if we already have a session for this
5399                  * address that is usable for a DS.
5400                  * Note that the MDS's address is in a different place
5401                  * than the sessions already acquired for DS's.
5402                  */
5403                 msad = (struct sockaddr_in *)nmp->nm_sockreq.nr_nam;
5404                 tdsp = TAILQ_FIRST(&nmp->nm_sess);
5405                 while (tdsp != NULL) {
5406                         if (msad != NULL && msad->sin_family == AF_INET &&
5407                             sin->sin_addr.s_addr == msad->sin_addr.s_addr &&
5408                             sin->sin_port == msad->sin_port &&
5409                             (tdsp->nfsclds_flags & NFSCLDS_DS) != 0 &&
5410                             tdsp->nfsclds_sess.nfsess_defunct == 0) {
5411                                 *dspp = tdsp;
5412                                 NFSUNLOCKMNT(nmp);
5413                                 NFSCL_DEBUG(4, "fnd same addr\n");
5414                                 return (0);
5415                         }
5416                         tdsp = TAILQ_NEXT(tdsp, nfsclds_list);
5417                         if (tdsp != NULL && tdsp->nfsclds_sockp != NULL)
5418                                 msad = (struct sockaddr_in *)
5419                                     tdsp->nfsclds_sockp->nr_nam;
5420                         else
5421                                 msad = NULL;
5422                 }
5423                 NFSUNLOCKMNT(nmp);
5424
5425                 /* No IP address match, so look for new/trunked one. */
5426                 sad = malloc(sizeof(*sad), M_SONAME, M_WAITOK | M_ZERO);
5427                 sad->sin_len = sizeof(*sad);
5428                 sad->sin_family = AF_INET;
5429                 sad->sin_port = sin->sin_port;
5430                 sad->sin_addr.s_addr = sin->sin_addr.s_addr;
5431                 nrp = malloc(sizeof(*nrp), M_NFSSOCKREQ, M_WAITOK | M_ZERO);
5432                 nrp->nr_nam = (struct sockaddr *)sad;
5433         } else if (af == AF_INET6) {
5434                 NFSLOCKMNT(nmp);
5435                 /*
5436                  * Check to see if we already have a session for this
5437                  * address that is usable for a DS.
5438                  * Note that the MDS's address is in a different place
5439                  * than the sessions already acquired for DS's.
5440                  */
5441                 msad6 = (struct sockaddr_in6 *)nmp->nm_sockreq.nr_nam;
5442                 tdsp = TAILQ_FIRST(&nmp->nm_sess);
5443                 while (tdsp != NULL) {
5444                         if (msad6 != NULL && msad6->sin6_family == AF_INET6 &&
5445                             IN6_ARE_ADDR_EQUAL(&sin6->sin6_addr,
5446                             &msad6->sin6_addr) &&
5447                             sin6->sin6_port == msad6->sin6_port &&
5448                             (tdsp->nfsclds_flags & NFSCLDS_DS) != 0 &&
5449                             tdsp->nfsclds_sess.nfsess_defunct == 0) {
5450                                 *dspp = tdsp;
5451                                 NFSUNLOCKMNT(nmp);
5452                                 return (0);
5453                         }
5454                         tdsp = TAILQ_NEXT(tdsp, nfsclds_list);
5455                         if (tdsp != NULL && tdsp->nfsclds_sockp != NULL)
5456                                 msad6 = (struct sockaddr_in6 *)
5457                                     tdsp->nfsclds_sockp->nr_nam;
5458                         else
5459                                 msad6 = NULL;
5460                 }
5461                 NFSUNLOCKMNT(nmp);
5462
5463                 /* No IP address match, so look for new/trunked one. */
5464                 sad6 = malloc(sizeof(*sad6), M_SONAME, M_WAITOK | M_ZERO);
5465                 sad6->sin6_len = sizeof(*sad6);
5466                 sad6->sin6_family = AF_INET6;
5467                 sad6->sin6_port = sin6->sin6_port;
5468                 NFSBCOPY(&sin6->sin6_addr, &sad6->sin6_addr,
5469                     sizeof(struct in6_addr));
5470                 nrp = malloc(sizeof(*nrp), M_NFSSOCKREQ, M_WAITOK | M_ZERO);
5471                 nrp->nr_nam = (struct sockaddr *)sad6;
5472         } else
5473                 return (EPERM);
5474
5475         nrp->nr_sotype = SOCK_STREAM;
5476         mtx_init(&nrp->nr_mtx, "nfssock", NULL, MTX_DEF);
5477         nrp->nr_prog = NFS_PROG;
5478         nrp->nr_vers = vers;
5479
5480         /*
5481          * Use the credentials that were used for the mount, which are
5482          * in nmp->nm_sockreq.nr_cred for newnfs_connect() etc.
5483          * Ref. counting the credentials with crhold() is probably not
5484          * necessary, since nm_sockreq.nr_cred won't be crfree()'d until
5485          * unmount, but I did it anyhow.
5486          */
5487         nrp->nr_cred = crhold(nmp->nm_sockreq.nr_cred);
5488         error = newnfs_connect(nmp, nrp, NULL, p, 0);
5489         NFSCL_DEBUG(3, "DS connect=%d\n", error);
5490
5491         dsp = NULL;
5492         /* Now, do the exchangeid and create session. */
5493         if (error == 0) {
5494                 if (vers == NFS_VER4) {
5495                         error = nfsrpc_exchangeid(nmp, clp, nrp,
5496                             NFSV4EXCH_USEPNFSDS, &dsp, nrp->nr_cred, p);
5497                         NFSCL_DEBUG(3, "DS exchangeid=%d\n", error);
5498                         if (error != 0)
5499                                 newnfs_disconnect(nrp);
5500                 } else {
5501                         dsp = malloc(sizeof(struct nfsclds), M_NFSCLDS,
5502                             M_WAITOK | M_ZERO);
5503                         dsp->nfsclds_flags |= NFSCLDS_DS;
5504                         dsp->nfsclds_expire = INT32_MAX; /* No renews needed. */
5505                         mtx_init(&dsp->nfsclds_mtx, "nfsds", NULL, MTX_DEF);
5506                         mtx_init(&dsp->nfsclds_sess.nfsess_mtx, "nfssession",
5507                             NULL, MTX_DEF);
5508                 }
5509         }
5510         if (error == 0) {
5511                 dsp->nfsclds_sockp = nrp;
5512                 if (vers == NFS_VER4) {
5513                         NFSLOCKMNT(nmp);
5514                         retv = nfscl_getsameserver(nmp, dsp, &tdsp,
5515                             &sequenceid);
5516                         NFSCL_DEBUG(3, "getsame ret=%d\n", retv);
5517                         if (retv == NFSDSP_USETHISSESSION &&
5518                             nfscl_dssameconn != 0) {
5519                                 NFSLOCKDS(tdsp);
5520                                 tdsp->nfsclds_flags |= NFSCLDS_SAMECONN;
5521                                 NFSUNLOCKDS(tdsp);
5522                                 NFSUNLOCKMNT(nmp);
5523                                 /*
5524                                  * If there is already a session for this
5525                                  * server, use it.
5526                                  */
5527                                 (void)newnfs_disconnect(nrp);
5528                                 nfscl_freenfsclds(dsp);
5529                                 *dspp = tdsp;
5530                                 return (0);
5531                         }
5532                         if (retv == NFSDSP_NOTFOUND)
5533                                 sequenceid =
5534                                     dsp->nfsclds_sess.nfsess_sequenceid;
5535                         NFSUNLOCKMNT(nmp);
5536                         error = nfsrpc_createsession(nmp, &dsp->nfsclds_sess,
5537                             nrp, sequenceid, 0, nrp->nr_cred, p);
5538                         NFSCL_DEBUG(3, "DS createsess=%d\n", error);
5539                 }
5540         } else {
5541                 NFSFREECRED(nrp->nr_cred);
5542                 NFSFREEMUTEX(&nrp->nr_mtx);
5543                 free(nrp->nr_nam, M_SONAME);
5544                 free(nrp, M_NFSSOCKREQ);
5545         }
5546         if (error == 0) {
5547                 NFSCL_DEBUG(3, "add DS session\n");
5548                 /*
5549                  * Put it at the end of the list. That way the list
5550                  * is ordered by when the entry was added. This matters
5551                  * since the one done first is the one that should be
5552                  * used for sequencid'ing any subsequent create sessions.
5553                  */
5554                 NFSLOCKMNT(nmp);
5555                 TAILQ_INSERT_TAIL(&nmp->nm_sess, dsp, nfsclds_list);
5556                 NFSUNLOCKMNT(nmp);
5557                 *dspp = dsp;
5558         } else if (dsp != NULL) {
5559                 newnfs_disconnect(nrp);
5560                 nfscl_freenfsclds(dsp);
5561         }
5562         return (error);
5563 }
5564
5565 /*
5566  * Do the NFSv4.1 Reclaim Complete.
5567  */
5568 int
5569 nfsrpc_reclaimcomplete(struct nfsmount *nmp, struct ucred *cred, NFSPROC_T *p)
5570 {
5571         uint32_t *tl;
5572         struct nfsrv_descript nfsd;
5573         struct nfsrv_descript *nd = &nfsd;
5574         int error;
5575
5576         nfscl_reqstart(nd, NFSPROC_RECLAIMCOMPL, nmp, NULL, 0, NULL, NULL, 0,
5577             0);
5578         NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED);
5579         *tl = newnfs_false;
5580         nd->nd_flag |= ND_USEGSSNAME;
5581         error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred,
5582             NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL);
5583         if (error != 0)
5584                 return (error);
5585         error = nd->nd_repstat;
5586         mbuf_freem(nd->nd_mrep);
5587         return (error);
5588 }
5589
5590 /*
5591  * Initialize the slot tables for a session.
5592  */
5593 static void
5594 nfscl_initsessionslots(struct nfsclsession *sep)
5595 {
5596         int i;
5597
5598         for (i = 0; i < NFSV4_CBSLOTS; i++) {
5599                 if (sep->nfsess_cbslots[i].nfssl_reply != NULL)
5600                         m_freem(sep->nfsess_cbslots[i].nfssl_reply);
5601                 NFSBZERO(&sep->nfsess_cbslots[i], sizeof(struct nfsslot));
5602         }
5603         for (i = 0; i < 64; i++)
5604                 sep->nfsess_slotseq[i] = 0;
5605         sep->nfsess_slots = 0;
5606 }
5607
5608 /*
5609  * Called to try and do an I/O operation via an NFSv4.1 Data Server (DS).
5610  */
5611 int
5612 nfscl_doiods(vnode_t vp, struct uio *uiop, int *iomode, int *must_commit,
5613     uint32_t rwaccess, int docommit, struct ucred *cred, NFSPROC_T *p)
5614 {
5615         struct nfsnode *np = VTONFS(vp);
5616         struct nfsmount *nmp = VFSTONFS(vnode_mount(vp));
5617         struct nfscllayout *layp;
5618         struct nfscldevinfo *dip;
5619         struct nfsclflayout *rflp;
5620         struct mbuf *m;
5621         struct nfsclwritedsdorpc *drpc, *tdrpc;
5622         nfsv4stateid_t stateid;
5623         struct ucred *newcred;
5624         uint64_t lastbyte, len, off, oresid, xfer;
5625         int eof, error, firstmirror, i, iolaymode, mirrorcnt, recalled, timo;
5626         void *lckp;
5627         uint8_t *dev;
5628         void *iovbase = NULL;
5629         size_t iovlen = 0;
5630         off_t offs = 0;
5631         ssize_t resid = 0;
5632
5633         if (!NFSHASPNFS(nmp) || nfscl_enablecallb == 0 || nfs_numnfscbd == 0 ||
5634             (np->n_flag & NNOLAYOUT) != 0)
5635                 return (EIO);
5636         /* Now, get a reference cnt on the clientid for this mount. */
5637         if (nfscl_getref(nmp) == 0)
5638                 return (EIO);
5639
5640         /* Find an appropriate stateid. */
5641         newcred = NFSNEWCRED(cred);
5642         error = nfscl_getstateid(vp, np->n_fhp->nfh_fh, np->n_fhp->nfh_len,
5643             rwaccess, 1, newcred, p, &stateid, &lckp);
5644         if (error != 0) {
5645                 NFSFREECRED(newcred);
5646                 nfscl_relref(nmp);
5647                 return (error);
5648         }
5649         /* Search for a layout for this file. */
5650         off = uiop->uio_offset;
5651         layp = nfscl_getlayout(nmp->nm_clp, np->n_fhp->nfh_fh,
5652             np->n_fhp->nfh_len, off, &rflp, &recalled);
5653         if (layp == NULL || rflp == NULL) {
5654                 if (recalled != 0) {
5655                         NFSFREECRED(newcred);
5656                         nfscl_relref(nmp);
5657                         return (EIO);
5658                 }
5659                 if (layp != NULL) {
5660                         nfscl_rellayout(layp, (rflp == NULL) ? 1 : 0);
5661                         layp = NULL;
5662                 }
5663                 /* Try and get a Layout, if it is supported. */
5664                 if (rwaccess == NFSV4OPEN_ACCESSWRITE ||
5665                     (np->n_flag & NWRITEOPENED) != 0)
5666                         iolaymode = NFSLAYOUTIOMODE_RW;
5667                 else
5668                         iolaymode = NFSLAYOUTIOMODE_READ;
5669                 error = nfsrpc_getlayout(nmp, vp, np->n_fhp, iolaymode,
5670                     NULL, &stateid, off, &layp, newcred, p);
5671                 if (error != 0) {
5672                         NFSLOCKNODE(np);
5673                         np->n_flag |= NNOLAYOUT;
5674                         NFSUNLOCKNODE(np);
5675                         if (lckp != NULL)
5676                                 nfscl_lockderef(lckp);
5677                         NFSFREECRED(newcred);
5678                         if (layp != NULL)
5679                                 nfscl_rellayout(layp, 0);
5680                         nfscl_relref(nmp);
5681                         return (error);
5682                 }
5683         }
5684
5685         /*
5686          * Loop around finding a layout that works for the first part of
5687          * this I/O operation, and then call the function that actually
5688          * does the RPC.
5689          */
5690         eof = 0;
5691         len = (uint64_t)uiop->uio_resid;
5692         while (len > 0 && error == 0 && eof == 0) {
5693                 off = uiop->uio_offset;
5694                 error = nfscl_findlayoutforio(layp, off, rwaccess, &rflp);
5695                 if (error == 0) {
5696                         oresid = xfer = (uint64_t)uiop->uio_resid;
5697                         if (xfer > (rflp->nfsfl_end - rflp->nfsfl_off))
5698                                 xfer = rflp->nfsfl_end - rflp->nfsfl_off;
5699                         /*
5700                          * For Flex File layout with mirrored DSs, select one
5701                          * of them at random for reads. For writes and commits,
5702                          * do all mirrors.
5703                          */
5704                         m = NULL;
5705                         tdrpc = drpc = NULL;
5706                         firstmirror = 0;
5707                         mirrorcnt = 1;
5708                         if ((layp->nfsly_flags & NFSLY_FLEXFILE) != 0 &&
5709                             (mirrorcnt = rflp->nfsfl_mirrorcnt) > 1) {
5710                                 if (rwaccess == NFSV4OPEN_ACCESSREAD) {
5711                                         firstmirror = arc4random() % mirrorcnt;
5712                                         mirrorcnt = firstmirror + 1;
5713                                 } else {
5714                                         if (docommit == 0) {
5715                                                 /*
5716                                                  * Save values, so uiop can be
5717                                                  * rolled back upon a write
5718                                                  * error.
5719                                                  */
5720                                                 offs = uiop->uio_offset;
5721                                                 resid = uiop->uio_resid;
5722                                                 iovbase =
5723                                                     uiop->uio_iov->iov_base;
5724                                                 iovlen = uiop->uio_iov->iov_len;
5725                                                 m = nfsm_uiombuflist(uiop, len,
5726                                                     NULL, NULL);
5727                                         }
5728                                         tdrpc = drpc = malloc(sizeof(*drpc) *
5729                                             (mirrorcnt - 1), M_TEMP, M_WAITOK |
5730                                             M_ZERO);
5731                                 }
5732                         }
5733                         for (i = firstmirror; i < mirrorcnt && error == 0; i++){
5734                                 if ((layp->nfsly_flags & NFSLY_FLEXFILE) != 0) {
5735                                         dev = rflp->nfsfl_ffm[i].dev;
5736                                         dip = nfscl_getdevinfo(nmp->nm_clp, dev,
5737                                             rflp->nfsfl_ffm[i].devp);
5738                                 } else {
5739                                         dev = rflp->nfsfl_dev;
5740                                         dip = nfscl_getdevinfo(nmp->nm_clp, dev,
5741                                             rflp->nfsfl_devp);
5742                                 }
5743                                 if (dip != NULL) {
5744                                         if ((rflp->nfsfl_flags & NFSFL_FLEXFILE)
5745                                             != 0)
5746                                                 error = nfscl_dofflayoutio(vp,
5747                                                     uiop, iomode, must_commit,
5748                                                     &eof, &stateid, rwaccess,
5749                                                     dip, layp, rflp, off, xfer,
5750                                                     i, docommit, m, tdrpc,
5751                                                     newcred, p);
5752                                         else
5753                                                 error = nfscl_doflayoutio(vp,
5754                                                     uiop, iomode, must_commit,
5755                                                     &eof, &stateid, rwaccess,
5756                                                     dip, layp, rflp, off, xfer,
5757                                                     docommit, newcred, p);
5758                                         nfscl_reldevinfo(dip);
5759                                 } else
5760                                         error = EIO;
5761                                 tdrpc++;
5762                         }
5763                         if (m != NULL)
5764                                 m_freem(m);
5765                         tdrpc = drpc;
5766                         timo = hz / 50;         /* Wait for 20msec. */
5767                         if (timo < 1)
5768                                 timo = 1;
5769                         for (i = firstmirror; i < mirrorcnt - 1 &&
5770                             tdrpc != NULL; i++, tdrpc++) {
5771                                 /*
5772                                  * For the unused drpc entries, both inprog and
5773                                  * err == 0, so this loop won't break.
5774                                  */
5775                                 while (tdrpc->inprog != 0 && tdrpc->done == 0)
5776                                         tsleep(&tdrpc->tsk, PVFS, "clrpcio",
5777                                             timo);
5778                                 if (error == 0 && tdrpc->err != 0)
5779                                         error = tdrpc->err;
5780                         }
5781                         free(drpc, M_TEMP);
5782                         if (error == 0) {
5783                                 if (mirrorcnt > 1 && rwaccess ==
5784                                     NFSV4OPEN_ACCESSWRITE && docommit == 0) {
5785                                         NFSLOCKCLSTATE();
5786                                         layp->nfsly_flags |= NFSLY_WRITTEN;
5787                                         NFSUNLOCKCLSTATE();
5788                                 }
5789                                 lastbyte = off + xfer - 1;
5790                                 NFSLOCKCLSTATE();
5791                                 if (lastbyte > layp->nfsly_lastbyte)
5792                                         layp->nfsly_lastbyte = lastbyte;
5793                                 NFSUNLOCKCLSTATE();
5794                         } else if (error == NFSERR_OPENMODE &&
5795                             rwaccess == NFSV4OPEN_ACCESSREAD) {
5796                                 NFSLOCKMNT(nmp);
5797                                 nmp->nm_state |= NFSSTA_OPENMODE;
5798                                 NFSUNLOCKMNT(nmp);
5799                         } else
5800                                 error = EIO;
5801                         if (error == 0)
5802                                 len -= (oresid - (uint64_t)uiop->uio_resid);
5803                         else if (mirrorcnt > 1 && rwaccess ==
5804                             NFSV4OPEN_ACCESSWRITE && docommit == 0) {
5805                                 /*
5806                                  * In case the rpc gets retried, roll the
5807                                  * uio fields changed by nfsm_uiombuflist()
5808                                  * back.
5809                                  */
5810                                 uiop->uio_offset = offs;
5811                                 uiop->uio_resid = resid;
5812                                 uiop->uio_iov->iov_base = iovbase;
5813                                 uiop->uio_iov->iov_len = iovlen;
5814                         }
5815                 }
5816         }
5817         if (lckp != NULL)
5818                 nfscl_lockderef(lckp);
5819         NFSFREECRED(newcred);
5820         nfscl_rellayout(layp, 0);
5821         nfscl_relref(nmp);
5822         return (error);
5823 }
5824
5825 /*
5826  * Make a copy of the mbuf chain and add an mbuf for null padding, as required.
5827  */
5828 static struct mbuf *
5829 nfsm_copym(struct mbuf *m, int off, int xfer)
5830 {
5831         struct mbuf *m2, *m3, *m4;
5832         uint32_t *tl;
5833         int rem;
5834
5835         m2 = m_copym(m, off, xfer, M_WAITOK);
5836         rem = NFSM_RNDUP(xfer) - xfer;
5837         if (rem > 0) {
5838                 /*
5839                  * The zero padding to a multiple of 4 bytes is required by
5840                  * the XDR. So that the mbufs copied by reference aren't
5841                  * modified, add an mbuf with the zero'd bytes to the list.
5842                  * rem will be a maximum of 3, so one zero'd uint32_t is
5843                  * sufficient.
5844                  */
5845                 m3 = m2;
5846                 while (m3->m_next != NULL)
5847                         m3 = m3->m_next;
5848                 NFSMGET(m4);
5849                 tl = NFSMTOD(m4, uint32_t *);
5850                 *tl = 0;
5851                 mbuf_setlen(m4, rem);
5852                 mbuf_setnext(m3, m4);
5853         }
5854         return (m2);
5855 }
5856
5857 /*
5858  * Find a file layout that will handle the first bytes of the requested
5859  * range and return the information from it needed to the I/O operation.
5860  */
5861 int
5862 nfscl_findlayoutforio(struct nfscllayout *lyp, uint64_t off, uint32_t rwaccess,
5863     struct nfsclflayout **retflpp)
5864 {
5865         struct nfsclflayout *flp, *nflp, *rflp;
5866         uint32_t rw;
5867
5868         rflp = NULL;
5869         rw = rwaccess;
5870         /* For reading, do the Read list first and then the Write list. */
5871         do {
5872                 if (rw == NFSV4OPEN_ACCESSREAD)
5873                         flp = LIST_FIRST(&lyp->nfsly_flayread);
5874                 else
5875                         flp = LIST_FIRST(&lyp->nfsly_flayrw);
5876                 while (flp != NULL) {
5877                         nflp = LIST_NEXT(flp, nfsfl_list);
5878                         if (flp->nfsfl_off > off)
5879                                 break;
5880                         if (flp->nfsfl_end > off &&
5881                             (rflp == NULL || rflp->nfsfl_end < flp->nfsfl_end))
5882                                 rflp = flp;
5883                         flp = nflp;
5884                 }
5885                 if (rw == NFSV4OPEN_ACCESSREAD)
5886                         rw = NFSV4OPEN_ACCESSWRITE;
5887                 else
5888                         rw = 0;
5889         } while (rw != 0);
5890         if (rflp != NULL) {
5891                 /* This one covers the most bytes starting at off. */
5892                 *retflpp = rflp;
5893                 return (0);
5894         }
5895         return (EIO);
5896 }
5897
5898 /*
5899  * Do I/O using an NFSv4.1 file layout.
5900  */
5901 static int
5902 nfscl_doflayoutio(vnode_t vp, struct uio *uiop, int *iomode, int *must_commit,
5903     int *eofp, nfsv4stateid_t *stateidp, int rwflag, struct nfscldevinfo *dp,
5904     struct nfscllayout *lyp, struct nfsclflayout *flp, uint64_t off,
5905     uint64_t len, int docommit, struct ucred *cred, NFSPROC_T *p)
5906 {
5907         uint64_t io_off, rel_off, stripe_unit_size, transfer, xfer;
5908         int commit_thru_mds, error, stripe_index, stripe_pos;
5909         struct nfsnode *np;
5910         struct nfsfh *fhp;
5911         struct nfsclds **dspp;
5912
5913         np = VTONFS(vp);
5914         rel_off = off - flp->nfsfl_patoff;
5915         stripe_unit_size = (flp->nfsfl_util >> 6) & 0x3ffffff;
5916         stripe_pos = (rel_off / stripe_unit_size + flp->nfsfl_stripe1) %
5917             dp->nfsdi_stripecnt;
5918         transfer = stripe_unit_size - (rel_off % stripe_unit_size);
5919         error = 0;
5920
5921         /* Loop around, doing I/O for each stripe unit. */
5922         while (len > 0 && error == 0) {
5923                 stripe_index = nfsfldi_stripeindex(dp, stripe_pos);
5924                 dspp = nfsfldi_addr(dp, stripe_index);
5925                 if (len > transfer && docommit == 0)
5926                         xfer = transfer;
5927                 else
5928                         xfer = len;
5929                 if ((flp->nfsfl_util & NFSFLAYUTIL_DENSE) != 0) {
5930                         /* Dense layout. */
5931                         if (stripe_pos >= flp->nfsfl_fhcnt)
5932                                 return (EIO);
5933                         fhp = flp->nfsfl_fh[stripe_pos];
5934                         io_off = (rel_off / (stripe_unit_size *
5935                             dp->nfsdi_stripecnt)) * stripe_unit_size +
5936                             rel_off % stripe_unit_size;
5937                 } else {
5938                         /* Sparse layout. */
5939                         if (flp->nfsfl_fhcnt > 1) {
5940                                 if (stripe_index >= flp->nfsfl_fhcnt)
5941                                         return (EIO);
5942                                 fhp = flp->nfsfl_fh[stripe_index];
5943                         } else if (flp->nfsfl_fhcnt == 1)
5944                                 fhp = flp->nfsfl_fh[0];
5945                         else
5946                                 fhp = np->n_fhp;
5947                         io_off = off;
5948                 }
5949                 if ((flp->nfsfl_util & NFSFLAYUTIL_COMMIT_THRU_MDS) != 0) {
5950                         commit_thru_mds = 1;
5951                         if (docommit != 0)
5952                                 error = EIO;
5953                 } else {
5954                         commit_thru_mds = 0;
5955                         mtx_lock(&np->n_mtx);
5956                         np->n_flag |= NDSCOMMIT;
5957                         mtx_unlock(&np->n_mtx);
5958                 }
5959                 if (docommit != 0) {
5960                         if (error == 0)
5961                                 error = nfsrpc_commitds(vp, io_off, xfer,
5962                                     *dspp, fhp, 0, 0, cred, p);
5963                         if (error == 0) {
5964                                 /*
5965                                  * Set both eof and uio_resid = 0 to end any
5966                                  * loops.
5967                                  */
5968                                 *eofp = 1;
5969                                 uiop->uio_resid = 0;
5970                         } else {
5971                                 mtx_lock(&np->n_mtx);
5972                                 np->n_flag &= ~NDSCOMMIT;
5973                                 mtx_unlock(&np->n_mtx);
5974                         }
5975                 } else if (rwflag == NFSV4OPEN_ACCESSREAD)
5976                         error = nfsrpc_readds(vp, uiop, stateidp, eofp, *dspp,
5977                             io_off, xfer, fhp, 0, 0, 0, cred, p);
5978                 else {
5979                         error = nfsrpc_writeds(vp, uiop, iomode, must_commit,
5980                             stateidp, *dspp, io_off, xfer, fhp, commit_thru_mds,
5981                             0, 0, 0, cred, p);
5982                         if (error == 0) {
5983                                 NFSLOCKCLSTATE();
5984                                 lyp->nfsly_flags |= NFSLY_WRITTEN;
5985                                 NFSUNLOCKCLSTATE();
5986                         }
5987                 }
5988                 if (error == 0) {
5989                         transfer = stripe_unit_size;
5990                         stripe_pos = (stripe_pos + 1) % dp->nfsdi_stripecnt;
5991                         len -= xfer;
5992                         off += xfer;
5993                 }
5994         }
5995         return (error);
5996 }
5997
5998 /*
5999  * Do I/O using an NFSv4.1 flex file layout.
6000  */
6001 static int
6002 nfscl_dofflayoutio(vnode_t vp, struct uio *uiop, int *iomode, int *must_commit,
6003     int *eofp, nfsv4stateid_t *stateidp, int rwflag, struct nfscldevinfo *dp,
6004     struct nfscllayout *lyp, struct nfsclflayout *flp, uint64_t off,
6005     uint64_t len, int mirror, int docommit, struct mbuf *mp,
6006     struct nfsclwritedsdorpc *drpc, struct ucred *cred, NFSPROC_T *p)
6007 {
6008         uint64_t transfer, xfer;
6009         int error, rel_off;
6010         struct nfsnode *np;
6011         struct nfsfh *fhp;
6012         struct nfsclds **dspp;
6013         struct ucred *tcred;
6014         struct mbuf *m;
6015
6016         np = VTONFS(vp);
6017         error = 0;
6018         rel_off = 0;
6019         NFSCL_DEBUG(4, "nfscl_dofflayoutio: off=%ju len=%ju\n", (uintmax_t)off,
6020             (uintmax_t)len);
6021         /* Loop around, doing I/O for each stripe unit. */
6022         while (len > 0 && error == 0) {
6023                 dspp = nfsfldi_addr(dp, 0);
6024                 fhp = flp->nfsfl_ffm[mirror].fh[dp->nfsdi_versindex];
6025                 stateidp = &flp->nfsfl_ffm[mirror].st;
6026                 NFSCL_DEBUG(4, "mirror=%d vind=%d fhlen=%d st.seqid=0x%x\n",
6027                     mirror, dp->nfsdi_versindex, fhp->nfh_len, stateidp->seqid);
6028                 if ((dp->nfsdi_flags & NFSDI_TIGHTCOUPLED) == 0) {
6029                         tcred = NFSNEWCRED(cred);
6030                         tcred->cr_uid = flp->nfsfl_ffm[mirror].user;
6031                         tcred->cr_groups[0] = flp->nfsfl_ffm[mirror].group;
6032                         tcred->cr_ngroups = 1;
6033                 } else
6034                         tcred = cred;
6035                 if (rwflag == NFSV4OPEN_ACCESSREAD)
6036                         transfer = dp->nfsdi_rsize;
6037                 else
6038                         transfer = dp->nfsdi_wsize;
6039                 mtx_lock(&np->n_mtx);
6040                 np->n_flag |= NDSCOMMIT;
6041                 mtx_unlock(&np->n_mtx);
6042                 if (len > transfer && docommit == 0)
6043                         xfer = transfer;
6044                 else
6045                         xfer = len;
6046                 if (docommit != 0) {
6047                         if (error == 0) {
6048                                 /*
6049                                  * Do last mirrored DS commit with this thread.
6050                                  */
6051                                 if (mirror < flp->nfsfl_mirrorcnt - 1)
6052                                         error = nfsio_commitds(vp, off, xfer,
6053                                             *dspp, fhp, dp->nfsdi_vers,
6054                                             dp->nfsdi_minorvers, drpc, tcred,
6055                                             p);
6056                                 else
6057                                         error = nfsrpc_commitds(vp, off, xfer,
6058                                             *dspp, fhp, dp->nfsdi_vers,
6059                                             dp->nfsdi_minorvers, tcred, p);
6060                                 NFSCL_DEBUG(4, "commitds=%d\n", error);
6061                                 if (error != 0 && error != EACCES && error !=
6062                                     ESTALE) {
6063                                         NFSCL_DEBUG(4,
6064                                             "DS layreterr for commit\n");
6065                                         nfscl_dserr(NFSV4OP_COMMIT, error, dp,
6066                                             lyp, *dspp);
6067                                 }
6068                         }
6069                         NFSCL_DEBUG(4, "aft nfsio_commitds=%d\n", error);
6070                         if (error == 0) {
6071                                 /*
6072                                  * Set both eof and uio_resid = 0 to end any
6073                                  * loops.
6074                                  */
6075                                 *eofp = 1;
6076                                 uiop->uio_resid = 0;
6077                         } else {
6078                                 mtx_lock(&np->n_mtx);
6079                                 np->n_flag &= ~NDSCOMMIT;
6080                                 mtx_unlock(&np->n_mtx);
6081                         }
6082                 } else if (rwflag == NFSV4OPEN_ACCESSREAD) {
6083                         error = nfsrpc_readds(vp, uiop, stateidp, eofp, *dspp,
6084                             off, xfer, fhp, 1, dp->nfsdi_vers,
6085                             dp->nfsdi_minorvers, tcred, p);
6086                         NFSCL_DEBUG(4, "readds=%d\n", error);
6087                         if (error != 0 && error != EACCES && error != ESTALE) {
6088                                 NFSCL_DEBUG(4, "DS layreterr for read\n");
6089                                 nfscl_dserr(NFSV4OP_READ, error, dp, lyp,
6090                                     *dspp);
6091                         }
6092                 } else {
6093                         if (flp->nfsfl_mirrorcnt == 1) {
6094                                 error = nfsrpc_writeds(vp, uiop, iomode,
6095                                     must_commit, stateidp, *dspp, off, xfer,
6096                                     fhp, 0, 1, dp->nfsdi_vers,
6097                                     dp->nfsdi_minorvers, tcred, p);
6098                                 if (error == 0) {
6099                                         NFSLOCKCLSTATE();
6100                                         lyp->nfsly_flags |= NFSLY_WRITTEN;
6101                                         NFSUNLOCKCLSTATE();
6102                                 }
6103                         } else {
6104                                 m = nfsm_copym(mp, rel_off, xfer);
6105                                 NFSCL_DEBUG(4, "mcopy reloff=%d xfer=%jd\n",
6106                                     rel_off, (uintmax_t)xfer);
6107                                 /*
6108                                  * Do last write to a mirrored DS with this
6109                                  * thread.
6110                                  */
6111                                 if (mirror < flp->nfsfl_mirrorcnt - 1)
6112                                         error = nfsio_writedsmir(vp, iomode,
6113                                             must_commit, stateidp, *dspp, off,
6114                                             xfer, fhp, m, dp->nfsdi_vers,
6115                                             dp->nfsdi_minorvers, drpc, tcred,
6116                                             p);
6117                                 else
6118                                         error = nfsrpc_writedsmir(vp, iomode,
6119                                             must_commit, stateidp, *dspp, off,
6120                                             xfer, fhp, m, dp->nfsdi_vers,
6121                                             dp->nfsdi_minorvers, tcred, p);
6122                                 NFSCL_DEBUG(4, "nfsio_writedsmir=%d\n", error);
6123                                 if (error != 0 && error != EACCES && error !=
6124                                     ESTALE) {
6125                                         NFSCL_DEBUG(4,
6126                                             "DS layreterr for write\n");
6127                                         nfscl_dserr(NFSV4OP_WRITE, error, dp,
6128                                             lyp, *dspp);
6129                                 }
6130                         }
6131                 }
6132                 NFSCL_DEBUG(4, "aft read/writeds=%d\n", error);
6133                 if (error == 0) {
6134                         len -= xfer;
6135                         off += xfer;
6136                         rel_off += xfer;
6137                 }
6138                 if ((dp->nfsdi_flags & NFSDI_TIGHTCOUPLED) == 0)
6139                         NFSFREECRED(tcred);
6140         }
6141         NFSCL_DEBUG(4, "eo nfscl_dofflayoutio=%d\n", error);
6142         return (error);
6143 }
6144
6145 /*
6146  * The actual read RPC done to a DS.
6147  */
6148 static int
6149 nfsrpc_readds(vnode_t vp, struct uio *uiop, nfsv4stateid_t *stateidp, int *eofp,
6150     struct nfsclds *dsp, uint64_t io_off, int len, struct nfsfh *fhp, int flex,
6151     int vers, int minorvers, struct ucred *cred, NFSPROC_T *p)
6152 {
6153         uint32_t *tl;
6154         int attrflag, error, retlen;
6155         struct nfsrv_descript nfsd;
6156         struct nfsmount *nmp = VFSTONFS(vnode_mount(vp));
6157         struct nfsrv_descript *nd = &nfsd;
6158         struct nfssockreq *nrp;
6159         struct nfsvattr na;
6160
6161         nd->nd_mrep = NULL;
6162         if (vers == 0 || vers == NFS_VER4) {
6163                 nfscl_reqstart(nd, NFSPROC_READDS, nmp, fhp->nfh_fh,
6164                     fhp->nfh_len, NULL, &dsp->nfsclds_sess, vers, minorvers);
6165                 vers = NFS_VER4;
6166                 NFSCL_DEBUG(4, "nfsrpc_readds: vers4 minvers=%d\n", minorvers);
6167                 if (flex != 0)
6168                         nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID);
6169                 else
6170                         nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSEQIDZERO);
6171         } else {
6172                 nfscl_reqstart(nd, NFSPROC_READ, nmp, fhp->nfh_fh,
6173                     fhp->nfh_len, NULL, &dsp->nfsclds_sess, vers, minorvers);
6174                 NFSCL_DEBUG(4, "nfsrpc_readds: vers3\n");
6175         }
6176         NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED * 3);
6177         txdr_hyper(io_off, tl);
6178         *(tl + 2) = txdr_unsigned(len);
6179         nrp = dsp->nfsclds_sockp;
6180         NFSCL_DEBUG(4, "nfsrpc_readds: nrp=%p\n", nrp);
6181         if (nrp == NULL)
6182                 /* If NULL, use the MDS socket. */
6183                 nrp = &nmp->nm_sockreq;
6184         error = newnfs_request(nd, nmp, NULL, nrp, vp, p, cred,
6185             NFS_PROG, vers, NULL, 1, NULL, &dsp->nfsclds_sess);
6186         NFSCL_DEBUG(4, "nfsrpc_readds: stat=%d err=%d\n", nd->nd_repstat,
6187             error);
6188         if (error != 0)
6189                 return (error);
6190         if (vers == NFS_VER3) {
6191                 error = nfscl_postop_attr(nd, &na, &attrflag, NULL);
6192                 NFSCL_DEBUG(4, "nfsrpc_readds: postop=%d\n", error);
6193                 if (error != 0)
6194                         goto nfsmout;
6195         }
6196         if (nd->nd_repstat != 0) {
6197                 error = nd->nd_repstat;
6198                 goto nfsmout;
6199         }
6200         if (vers == NFS_VER3) {
6201                 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED);
6202                 *eofp = fxdr_unsigned(int, *(tl + 1));
6203         } else {
6204                 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED);
6205                 *eofp = fxdr_unsigned(int, *tl);
6206         }
6207         NFSM_STRSIZ(retlen, len);
6208         NFSCL_DEBUG(4, "nfsrpc_readds: retlen=%d eof=%d\n", retlen, *eofp);
6209         error = nfsm_mbufuio(nd, uiop, retlen);
6210 nfsmout:
6211         if (nd->nd_mrep != NULL)
6212                 mbuf_freem(nd->nd_mrep);
6213         return (error);
6214 }
6215
6216 /*
6217  * The actual write RPC done to a DS.
6218  */
6219 static int
6220 nfsrpc_writeds(vnode_t vp, struct uio *uiop, int *iomode, int *must_commit,
6221     nfsv4stateid_t *stateidp, struct nfsclds *dsp, uint64_t io_off, int len,
6222     struct nfsfh *fhp, int commit_thru_mds, int flex, int vers, int minorvers,
6223     struct ucred *cred, NFSPROC_T *p)
6224 {
6225         uint32_t *tl;
6226         struct nfsmount *nmp = VFSTONFS(vnode_mount(vp));
6227         int attrflag, error, rlen, commit, committed = NFSWRITE_FILESYNC;
6228         int32_t backup;
6229         struct nfsrv_descript nfsd;
6230         struct nfsrv_descript *nd = &nfsd;
6231         struct nfssockreq *nrp;
6232         struct nfsvattr na;
6233
6234         KASSERT(uiop->uio_iovcnt == 1, ("nfs: writerpc iovcnt > 1"));
6235         nd->nd_mrep = NULL;
6236         if (vers == 0 || vers == NFS_VER4) {
6237                 nfscl_reqstart(nd, NFSPROC_WRITEDS, nmp, fhp->nfh_fh,
6238                     fhp->nfh_len, NULL, &dsp->nfsclds_sess, vers, minorvers);
6239                 NFSCL_DEBUG(4, "nfsrpc_writeds: vers4 minvers=%d\n", minorvers);
6240                 vers = NFS_VER4;
6241                 if (flex != 0)
6242                         nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID);
6243                 else
6244                         nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSEQIDZERO);
6245                 NFSM_BUILD(tl, uint32_t *, NFSX_HYPER + 2 * NFSX_UNSIGNED);
6246         } else {
6247                 nfscl_reqstart(nd, NFSPROC_WRITE, nmp, fhp->nfh_fh,
6248                     fhp->nfh_len, NULL, &dsp->nfsclds_sess, vers, minorvers);
6249                 NFSCL_DEBUG(4, "nfsrpc_writeds: vers3\n");
6250                 NFSM_BUILD(tl, uint32_t *, NFSX_HYPER + 3 * NFSX_UNSIGNED);
6251         }
6252         txdr_hyper(io_off, tl);
6253         tl += 2;
6254         if (vers == NFS_VER3)
6255                 *tl++ = txdr_unsigned(len);
6256         *tl++ = txdr_unsigned(*iomode);
6257         *tl = txdr_unsigned(len);
6258         nfsm_uiombuf(nd, uiop, len);
6259         nrp = dsp->nfsclds_sockp;
6260         if (nrp == NULL)
6261                 /* If NULL, use the MDS socket. */
6262                 nrp = &nmp->nm_sockreq;
6263         error = newnfs_request(nd, nmp, NULL, nrp, vp, p, cred,
6264             NFS_PROG, vers, NULL, 1, NULL, &dsp->nfsclds_sess);
6265         NFSCL_DEBUG(4, "nfsrpc_writeds: err=%d stat=%d\n", error,
6266             nd->nd_repstat);
6267         if (error != 0)
6268                 return (error);
6269         if (nd->nd_repstat != 0) {
6270                 /*
6271                  * In case the rpc gets retried, roll
6272                  * the uio fileds changed by nfsm_uiombuf()
6273                  * back.
6274                  */
6275                 uiop->uio_offset -= len;
6276                 uio_uio_resid_add(uiop, len);
6277                 uio_iov_base_add(uiop, -len);
6278                 uio_iov_len_add(uiop, len);
6279                 error = nd->nd_repstat;
6280         } else {
6281                 if (vers == NFS_VER3) {
6282                         error = nfscl_wcc_data(nd, vp, &na, &attrflag, NULL,
6283                             NULL);
6284                         NFSCL_DEBUG(4, "nfsrpc_writeds: wcc_data=%d\n", error);
6285                         if (error != 0)
6286                                 goto nfsmout;
6287                 }
6288                 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED + NFSX_VERF);
6289                 rlen = fxdr_unsigned(int, *tl++);
6290                 NFSCL_DEBUG(4, "nfsrpc_writeds: len=%d rlen=%d\n", len, rlen);
6291                 if (rlen == 0) {
6292                         error = NFSERR_IO;
6293                         goto nfsmout;
6294                 } else if (rlen < len) {
6295                         backup = len - rlen;
6296                         uio_iov_base_add(uiop, -(backup));
6297                         uio_iov_len_add(uiop, backup);
6298                         uiop->uio_offset -= backup;
6299                         uio_uio_resid_add(uiop, backup);
6300                         len = rlen;
6301                 }
6302                 commit = fxdr_unsigned(int, *tl++);
6303
6304                 /*
6305                  * Return the lowest commitment level
6306                  * obtained by any of the RPCs.
6307                  */
6308                 if (committed == NFSWRITE_FILESYNC)
6309                         committed = commit;
6310                 else if (committed == NFSWRITE_DATASYNC &&
6311                     commit == NFSWRITE_UNSTABLE)
6312                         committed = commit;
6313                 if (commit_thru_mds != 0) {
6314                         NFSLOCKMNT(nmp);
6315                         if (!NFSHASWRITEVERF(nmp)) {
6316                                 NFSBCOPY(tl, nmp->nm_verf, NFSX_VERF);
6317                                 NFSSETWRITEVERF(nmp);
6318                         } else if (NFSBCMP(tl, nmp->nm_verf, NFSX_VERF)) {
6319                                 *must_commit = 1;
6320                                 NFSBCOPY(tl, nmp->nm_verf, NFSX_VERF);
6321                         }
6322                         NFSUNLOCKMNT(nmp);
6323                 } else {
6324                         NFSLOCKDS(dsp);
6325                         if ((dsp->nfsclds_flags & NFSCLDS_HASWRITEVERF) == 0) {
6326                                 NFSBCOPY(tl, dsp->nfsclds_verf, NFSX_VERF);
6327                                 dsp->nfsclds_flags |= NFSCLDS_HASWRITEVERF;
6328                         } else if (NFSBCMP(tl, dsp->nfsclds_verf, NFSX_VERF)) {
6329                                 *must_commit = 1;
6330                                 NFSBCOPY(tl, dsp->nfsclds_verf, NFSX_VERF);
6331                         }
6332                         NFSUNLOCKDS(dsp);
6333                 }
6334         }
6335 nfsmout:
6336         if (nd->nd_mrep != NULL)
6337                 mbuf_freem(nd->nd_mrep);
6338         *iomode = committed;
6339         if (nd->nd_repstat != 0 && error == 0)
6340                 error = nd->nd_repstat;
6341         return (error);
6342 }
6343
6344 /*
6345  * The actual write RPC done to a DS.
6346  * This variant is called from a separate kernel process for mirrors.
6347  * Any short write is considered an IO error.
6348  */
6349 static int
6350 nfsrpc_writedsmir(vnode_t vp, int *iomode, int *must_commit,
6351     nfsv4stateid_t *stateidp, struct nfsclds *dsp, uint64_t io_off, int len,
6352     struct nfsfh *fhp, struct mbuf *m, int vers, int minorvers,
6353     struct ucred *cred, NFSPROC_T *p)
6354 {
6355         uint32_t *tl;
6356         struct nfsmount *nmp = VFSTONFS(vnode_mount(vp));
6357         int attrflag, error, commit, committed = NFSWRITE_FILESYNC, rlen;
6358         struct nfsrv_descript nfsd;
6359         struct nfsrv_descript *nd = &nfsd;
6360         struct nfssockreq *nrp;
6361         struct nfsvattr na;
6362
6363         nd->nd_mrep = NULL;
6364         if (vers == 0 || vers == NFS_VER4) {
6365                 nfscl_reqstart(nd, NFSPROC_WRITEDS, nmp, fhp->nfh_fh,
6366                     fhp->nfh_len, NULL, &dsp->nfsclds_sess, vers, minorvers);
6367                 vers = NFS_VER4;
6368                 NFSCL_DEBUG(4, "nfsrpc_writedsmir: vers4 minvers=%d\n",
6369                     minorvers);
6370                 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID);
6371                 NFSM_BUILD(tl, uint32_t *, NFSX_HYPER + 2 * NFSX_UNSIGNED);
6372         } else {
6373                 nfscl_reqstart(nd, NFSPROC_WRITE, nmp, fhp->nfh_fh,
6374                     fhp->nfh_len, NULL, &dsp->nfsclds_sess, vers, minorvers);
6375                 NFSCL_DEBUG(4, "nfsrpc_writedsmir: vers3\n");
6376                 NFSM_BUILD(tl, uint32_t *, NFSX_HYPER + 3 * NFSX_UNSIGNED);
6377         }
6378         txdr_hyper(io_off, tl);
6379         tl += 2;
6380         if (vers == NFS_VER3)
6381                 *tl++ = txdr_unsigned(len);
6382         *tl++ = txdr_unsigned(*iomode);
6383         *tl = txdr_unsigned(len);
6384         if (len > 0) {
6385                 /* Put data in mbuf chain. */
6386                 nd->nd_mb->m_next = m;
6387                 /* Set nd_mb and nd_bpos to end of data. */
6388                 while (m->m_next != NULL)
6389                         m = m->m_next;
6390                 nd->nd_mb = m;
6391                 nd->nd_bpos = mtod(m, char *) + m->m_len;
6392                 NFSCL_DEBUG(4, "nfsrpc_writedsmir: lastmb len=%d\n", m->m_len);
6393         }
6394         nrp = dsp->nfsclds_sockp;
6395         if (nrp == NULL)
6396                 /* If NULL, use the MDS socket. */
6397                 nrp = &nmp->nm_sockreq;
6398         error = newnfs_request(nd, nmp, NULL, nrp, vp, p, cred,
6399             NFS_PROG, vers, NULL, 1, NULL, &dsp->nfsclds_sess);
6400         NFSCL_DEBUG(4, "nfsrpc_writedsmir: err=%d stat=%d\n", error,
6401             nd->nd_repstat);
6402         if (error != 0)
6403                 return (error);
6404         if (nd->nd_repstat != 0)
6405                 error = nd->nd_repstat;
6406         else {
6407                 if (vers == NFS_VER3) {
6408                         error = nfscl_wcc_data(nd, vp, &na, &attrflag, NULL,
6409                             NULL);
6410                         NFSCL_DEBUG(4, "nfsrpc_writedsmir: wcc_data=%d\n",
6411                             error);
6412                         if (error != 0)
6413                                 goto nfsmout;
6414                 }
6415                 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED + NFSX_VERF);
6416                 rlen = fxdr_unsigned(int, *tl++);
6417                 NFSCL_DEBUG(4, "nfsrpc_writedsmir: len=%d rlen=%d\n", len,
6418                     rlen);
6419                 if (rlen != len) {
6420                         error = NFSERR_IO;
6421                         NFSCL_DEBUG(4, "nfsrpc_writedsmir: len=%d rlen=%d\n",
6422                             len, rlen);
6423                         goto nfsmout;
6424                 }
6425                 commit = fxdr_unsigned(int, *tl++);
6426
6427                 /*
6428                  * Return the lowest commitment level
6429                  * obtained by any of the RPCs.
6430                  */
6431                 if (committed == NFSWRITE_FILESYNC)
6432                         committed = commit;
6433                 else if (committed == NFSWRITE_DATASYNC &&
6434                     commit == NFSWRITE_UNSTABLE)
6435                         committed = commit;
6436                 NFSLOCKDS(dsp);
6437                 if ((dsp->nfsclds_flags & NFSCLDS_HASWRITEVERF) == 0) {
6438                         NFSBCOPY(tl, dsp->nfsclds_verf, NFSX_VERF);
6439                         dsp->nfsclds_flags |= NFSCLDS_HASWRITEVERF;
6440                 } else if (NFSBCMP(tl, dsp->nfsclds_verf, NFSX_VERF)) {
6441                         *must_commit = 1;
6442                         NFSBCOPY(tl, dsp->nfsclds_verf, NFSX_VERF);
6443                 }
6444                 NFSUNLOCKDS(dsp);
6445         }
6446 nfsmout:
6447         if (nd->nd_mrep != NULL)
6448                 mbuf_freem(nd->nd_mrep);
6449         *iomode = committed;
6450         if (nd->nd_repstat != 0 && error == 0)
6451                 error = nd->nd_repstat;
6452         return (error);
6453 }
6454
6455 /*
6456  * Start up the thread that will execute nfsrpc_writedsmir().
6457  */
6458 static void
6459 start_writedsmir(void *arg, int pending)
6460 {
6461         struct nfsclwritedsdorpc *drpc;
6462
6463         drpc = (struct nfsclwritedsdorpc *)arg;
6464         drpc->err = nfsrpc_writedsmir(drpc->vp, &drpc->iomode,
6465             &drpc->must_commit, drpc->stateidp, drpc->dsp, drpc->off, drpc->len,
6466             drpc->fhp, drpc->m, drpc->vers, drpc->minorvers, drpc->cred,
6467             drpc->p);
6468         drpc->done = 1;
6469         NFSCL_DEBUG(4, "start_writedsmir: err=%d\n", drpc->err);
6470 }
6471
6472 /*
6473  * Set up the write DS mirror call for the pNFS I/O thread.
6474  */
6475 static int
6476 nfsio_writedsmir(vnode_t vp, int *iomode, int *must_commit,
6477     nfsv4stateid_t *stateidp, struct nfsclds *dsp, uint64_t off, int len,
6478     struct nfsfh *fhp, struct mbuf *m, int vers, int minorvers,
6479     struct nfsclwritedsdorpc *drpc, struct ucred *cred, NFSPROC_T *p)
6480 {
6481         int error, ret;
6482
6483         error = 0;
6484         drpc->done = 0;
6485         drpc->vp = vp;
6486         drpc->iomode = *iomode;
6487         drpc->must_commit = *must_commit;
6488         drpc->stateidp = stateidp;
6489         drpc->dsp = dsp;
6490         drpc->off = off;
6491         drpc->len = len;
6492         drpc->fhp = fhp;
6493         drpc->m = m;
6494         drpc->vers = vers;
6495         drpc->minorvers = minorvers;
6496         drpc->cred = cred;
6497         drpc->p = p;
6498         drpc->inprog = 0;
6499         ret = EIO;
6500         if (nfs_pnfsiothreads != 0) {
6501                 ret = nfs_pnfsio(start_writedsmir, drpc);
6502                 NFSCL_DEBUG(4, "nfsio_writedsmir: nfs_pnfsio=%d\n", ret);
6503         }
6504         if (ret != 0)
6505                 error = nfsrpc_writedsmir(vp, iomode, must_commit, stateidp,
6506                     dsp, off, len, fhp, m, vers, minorvers, cred, p);
6507         NFSCL_DEBUG(4, "nfsio_writedsmir: error=%d\n", error);
6508         return (error);
6509 }
6510
6511 /*
6512  * Free up the nfsclds structure.
6513  */
6514 void
6515 nfscl_freenfsclds(struct nfsclds *dsp)
6516 {
6517         int i;
6518
6519         if (dsp == NULL)
6520                 return;
6521         if (dsp->nfsclds_sockp != NULL) {
6522                 NFSFREECRED(dsp->nfsclds_sockp->nr_cred);
6523                 NFSFREEMUTEX(&dsp->nfsclds_sockp->nr_mtx);
6524                 free(dsp->nfsclds_sockp->nr_nam, M_SONAME);
6525                 free(dsp->nfsclds_sockp, M_NFSSOCKREQ);
6526         }
6527         NFSFREEMUTEX(&dsp->nfsclds_mtx);
6528         NFSFREEMUTEX(&dsp->nfsclds_sess.nfsess_mtx);
6529         for (i = 0; i < NFSV4_CBSLOTS; i++) {
6530                 if (dsp->nfsclds_sess.nfsess_cbslots[i].nfssl_reply != NULL)
6531                         m_freem(
6532                             dsp->nfsclds_sess.nfsess_cbslots[i].nfssl_reply);
6533         }
6534         free(dsp, M_NFSCLDS);
6535 }
6536
6537 static enum nfsclds_state
6538 nfscl_getsameserver(struct nfsmount *nmp, struct nfsclds *newdsp,
6539     struct nfsclds **retdspp, uint32_t *sequencep)
6540 {
6541         struct nfsclds *dsp;
6542         int fndseq;
6543
6544         /*
6545          * Search the list of nfsclds structures for one with the same
6546          * server.
6547          */
6548         fndseq = 0;
6549         TAILQ_FOREACH(dsp, &nmp->nm_sess, nfsclds_list) {
6550                 if (dsp->nfsclds_servownlen == newdsp->nfsclds_servownlen &&
6551                     dsp->nfsclds_servownlen != 0 &&
6552                     !NFSBCMP(dsp->nfsclds_serverown, newdsp->nfsclds_serverown,
6553                     dsp->nfsclds_servownlen) &&
6554                     dsp->nfsclds_sess.nfsess_defunct == 0) {
6555                         NFSCL_DEBUG(4, "fnd same fdsp=%p dsp=%p flg=0x%x\n",
6556                             TAILQ_FIRST(&nmp->nm_sess), dsp,
6557                             dsp->nfsclds_flags);
6558                         if (fndseq == 0) {
6559                                 /* Get sequenceid# from first entry. */
6560                                 *sequencep =
6561                                     dsp->nfsclds_sess.nfsess_sequenceid;
6562                                 fndseq = 1;
6563                         }
6564                         /* Server major id matches. */
6565                         if ((dsp->nfsclds_flags & NFSCLDS_DS) != 0) {
6566                                 *retdspp = dsp;
6567                                 return (NFSDSP_USETHISSESSION);
6568                         }
6569
6570                 }
6571         }
6572         if (fndseq != 0)
6573                 return (NFSDSP_SEQTHISSESSION);
6574         return (NFSDSP_NOTFOUND);
6575 }
6576
6577 /*
6578  * NFS commit rpc to a NFSv4.1 DS.
6579  */
6580 static int
6581 nfsrpc_commitds(vnode_t vp, uint64_t offset, int cnt, struct nfsclds *dsp,
6582     struct nfsfh *fhp, int vers, int minorvers, struct ucred *cred,
6583     NFSPROC_T *p)
6584 {
6585         uint32_t *tl;
6586         struct nfsrv_descript nfsd, *nd = &nfsd;
6587         struct nfsmount *nmp = VFSTONFS(vnode_mount(vp));
6588         struct nfssockreq *nrp;
6589         struct nfsvattr na;
6590         int attrflag, error;
6591
6592         nd->nd_mrep = NULL;
6593         if (vers == 0 || vers == NFS_VER4) {
6594                 nfscl_reqstart(nd, NFSPROC_COMMITDS, nmp, fhp->nfh_fh,
6595                     fhp->nfh_len, NULL, &dsp->nfsclds_sess, vers, minorvers);
6596                 vers = NFS_VER4;
6597         } else
6598                 nfscl_reqstart(nd, NFSPROC_COMMIT, nmp, fhp->nfh_fh,
6599                     fhp->nfh_len, NULL, &dsp->nfsclds_sess, vers, minorvers);
6600         NFSCL_DEBUG(4, "nfsrpc_commitds: vers=%d minvers=%d\n", vers,
6601             minorvers);
6602         NFSM_BUILD(tl, uint32_t *, NFSX_HYPER + NFSX_UNSIGNED);
6603         txdr_hyper(offset, tl);
6604         tl += 2;
6605         *tl = txdr_unsigned(cnt);
6606         nrp = dsp->nfsclds_sockp;
6607         if (nrp == NULL)
6608                 /* If NULL, use the MDS socket. */
6609                 nrp = &nmp->nm_sockreq;
6610         error = newnfs_request(nd, nmp, NULL, nrp, vp, p, cred,
6611             NFS_PROG, vers, NULL, 1, NULL, &dsp->nfsclds_sess);
6612         NFSCL_DEBUG(4, "nfsrpc_commitds: err=%d stat=%d\n", error,
6613             nd->nd_repstat);
6614         if (error != 0)
6615                 return (error);
6616         if (nd->nd_repstat == 0) {
6617                 if (vers == NFS_VER3) {
6618                         error = nfscl_wcc_data(nd, vp, &na, &attrflag, NULL,
6619                             NULL);
6620                         NFSCL_DEBUG(4, "nfsrpc_commitds: wccdata=%d\n", error);
6621                         if (error != 0)
6622                                 goto nfsmout;
6623                 }
6624                 NFSM_DISSECT(tl, u_int32_t *, NFSX_VERF);
6625                 NFSLOCKDS(dsp);
6626                 if (NFSBCMP(tl, dsp->nfsclds_verf, NFSX_VERF)) {
6627                         NFSBCOPY(tl, dsp->nfsclds_verf, NFSX_VERF);
6628                         error = NFSERR_STALEWRITEVERF;
6629                 }
6630                 NFSUNLOCKDS(dsp);
6631         }
6632 nfsmout:
6633         if (error == 0 && nd->nd_repstat != 0)
6634                 error = nd->nd_repstat;
6635         mbuf_freem(nd->nd_mrep);
6636         return (error);
6637 }
6638
6639 /*
6640  * Start up the thread that will execute nfsrpc_commitds().
6641  */
6642 static void
6643 start_commitds(void *arg, int pending)
6644 {
6645         struct nfsclwritedsdorpc *drpc;
6646
6647         drpc = (struct nfsclwritedsdorpc *)arg;
6648         drpc->err = nfsrpc_commitds(drpc->vp, drpc->off, drpc->len,
6649             drpc->dsp, drpc->fhp, drpc->vers, drpc->minorvers, drpc->cred,
6650             drpc->p);
6651         drpc->done = 1;
6652         NFSCL_DEBUG(4, "start_commitds: err=%d\n", drpc->err);
6653 }
6654
6655 /*
6656  * Set up the commit DS mirror call for the pNFS I/O thread.
6657  */
6658 static int
6659 nfsio_commitds(vnode_t vp, uint64_t offset, int cnt, struct nfsclds *dsp,
6660     struct nfsfh *fhp, int vers, int minorvers,
6661     struct nfsclwritedsdorpc *drpc, struct ucred *cred, NFSPROC_T *p)
6662 {
6663         int error, ret;
6664
6665         error = 0;
6666         drpc->done = 0;
6667         drpc->vp = vp;
6668         drpc->off = offset;
6669         drpc->len = cnt;
6670         drpc->dsp = dsp;
6671         drpc->fhp = fhp;
6672         drpc->vers = vers;
6673         drpc->minorvers = minorvers;
6674         drpc->cred = cred;
6675         drpc->p = p;
6676         drpc->inprog = 0;
6677         ret = EIO;
6678         if (nfs_pnfsiothreads != 0) {
6679                 ret = nfs_pnfsio(start_commitds, drpc);
6680                 NFSCL_DEBUG(4, "nfsio_commitds: nfs_pnfsio=%d\n", ret);
6681         }
6682         if (ret != 0)
6683                 error = nfsrpc_commitds(vp, offset, cnt, dsp, fhp, vers,
6684                     minorvers, cred, p);
6685         NFSCL_DEBUG(4, "nfsio_commitds: error=%d\n", error);
6686         return (error);
6687 }
6688
6689 /*
6690  * Set up the XDR arguments for the LayoutGet operation.
6691  */
6692 static void
6693 nfsrv_setuplayoutget(struct nfsrv_descript *nd, int iomode, uint64_t offset,
6694     uint64_t len, uint64_t minlen, nfsv4stateid_t *stateidp, int layouttype,
6695     int layoutlen, int usecurstateid)
6696 {
6697         uint32_t *tl;
6698
6699         NFSM_BUILD(tl, uint32_t *, 4 * NFSX_UNSIGNED + 3 * NFSX_HYPER +
6700             NFSX_STATEID);
6701         *tl++ = newnfs_false;           /* Don't signal availability. */
6702         *tl++ = txdr_unsigned(layouttype);
6703         *tl++ = txdr_unsigned(iomode);
6704         txdr_hyper(offset, tl);
6705         tl += 2;
6706         txdr_hyper(len, tl);
6707         tl += 2;
6708         txdr_hyper(minlen, tl);
6709         tl += 2;
6710         if (usecurstateid != 0) {
6711                 /* Special stateid for Current stateid. */
6712                 *tl++ = txdr_unsigned(1);
6713                 *tl++ = 0;
6714                 *tl++ = 0;
6715                 *tl++ = 0;
6716         } else {
6717                 *tl++ = txdr_unsigned(stateidp->seqid);
6718                 NFSCL_DEBUG(4, "layget seq=%d\n", (int)stateidp->seqid);
6719                 *tl++ = stateidp->other[0];
6720                 *tl++ = stateidp->other[1];
6721                 *tl++ = stateidp->other[2];
6722         }
6723         *tl = txdr_unsigned(layoutlen);
6724 }
6725
6726 /*
6727  * Parse the reply for a successful LayoutGet operation.
6728  */
6729 static int
6730 nfsrv_parselayoutget(struct nfsrv_descript *nd, nfsv4stateid_t *stateidp,
6731     int *retonclosep, struct nfsclflayouthead *flhp)
6732 {
6733         uint32_t *tl;
6734         struct nfsclflayout *flp, *prevflp, *tflp;
6735         int cnt, error, fhcnt, gotiomode, i, iomode, j, k, l, laytype, nfhlen;
6736         int m, mirrorcnt;
6737         uint64_t retlen, off;
6738         struct nfsfh *nfhp;
6739         uint8_t *cp;
6740         uid_t user;
6741         gid_t grp;
6742
6743         NFSCL_DEBUG(4, "in nfsrv_parselayoutget\n");
6744         error = 0;
6745         flp = NULL;
6746         gotiomode = -1;
6747         NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED + NFSX_STATEID);
6748         if (*tl++ != 0)
6749                 *retonclosep = 1;
6750         else
6751                 *retonclosep = 0;
6752         stateidp->seqid = fxdr_unsigned(uint32_t, *tl++);
6753         NFSCL_DEBUG(4, "retoncls=%d stseq=%d\n", *retonclosep,
6754             (int)stateidp->seqid);
6755         stateidp->other[0] = *tl++;
6756         stateidp->other[1] = *tl++;
6757         stateidp->other[2] = *tl++;
6758         cnt = fxdr_unsigned(int, *tl);
6759         NFSCL_DEBUG(4, "layg cnt=%d\n", cnt);
6760         if (cnt <= 0 || cnt > 10000) {
6761                 /* Don't accept more than 10000 layouts in reply. */
6762                 error = NFSERR_BADXDR;
6763                 goto nfsmout;
6764         }
6765         for (i = 0; i < cnt; i++) {
6766                 /* Dissect to the layout type. */
6767                 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_HYPER +
6768                     3 * NFSX_UNSIGNED);
6769                 off = fxdr_hyper(tl); tl += 2;
6770                 retlen = fxdr_hyper(tl); tl += 2;
6771                 iomode = fxdr_unsigned(int, *tl++);
6772                 laytype = fxdr_unsigned(int, *tl);
6773                 NFSCL_DEBUG(4, "layt=%d off=%ju len=%ju iom=%d\n", laytype,
6774                     (uintmax_t)off, (uintmax_t)retlen, iomode);
6775                 /* Ignore length of layout body for now. */
6776                 if (laytype == NFSLAYOUT_NFSV4_1_FILES) {
6777                         /* Parse the File layout up to fhcnt. */
6778                         NFSM_DISSECT(tl, uint32_t *, 3 * NFSX_UNSIGNED +
6779                             NFSX_HYPER + NFSX_V4DEVICEID);
6780                         fhcnt = fxdr_unsigned(int, *(tl + 4 +
6781                             NFSX_V4DEVICEID / NFSX_UNSIGNED));
6782                         NFSCL_DEBUG(4, "fhcnt=%d\n", fhcnt);
6783                         if (fhcnt < 0 || fhcnt > 100) {
6784                                 /* Don't accept more than 100 file handles. */
6785                                 error = NFSERR_BADXDR;
6786                                 goto nfsmout;
6787                         }
6788                         if (fhcnt > 0)
6789                                 flp = malloc(sizeof(*flp) + fhcnt *
6790                                     sizeof(struct nfsfh *), M_NFSFLAYOUT,
6791                                     M_WAITOK);
6792                         else
6793                                 flp = malloc(sizeof(*flp), M_NFSFLAYOUT,
6794                                     M_WAITOK);
6795                         flp->nfsfl_flags = NFSFL_FILE;
6796                         flp->nfsfl_fhcnt = 0;
6797                         flp->nfsfl_devp = NULL;
6798                         flp->nfsfl_off = off;
6799                         if (flp->nfsfl_off + retlen < flp->nfsfl_off)
6800                                 flp->nfsfl_end = UINT64_MAX - flp->nfsfl_off;
6801                         else
6802                                 flp->nfsfl_end = flp->nfsfl_off + retlen;
6803                         flp->nfsfl_iomode = iomode;
6804                         if (gotiomode == -1)
6805                                 gotiomode = flp->nfsfl_iomode;
6806                         /* Ignore layout body length for now. */
6807                         NFSBCOPY(tl, flp->nfsfl_dev, NFSX_V4DEVICEID);
6808                         tl += (NFSX_V4DEVICEID / NFSX_UNSIGNED);
6809                         flp->nfsfl_util = fxdr_unsigned(uint32_t, *tl++);
6810                         NFSCL_DEBUG(4, "flutil=0x%x\n", flp->nfsfl_util);
6811                         flp->nfsfl_stripe1 = fxdr_unsigned(uint32_t, *tl++);
6812                         flp->nfsfl_patoff = fxdr_hyper(tl); tl += 2;
6813                         NFSCL_DEBUG(4, "stripe1=%u poff=%ju\n",
6814                             flp->nfsfl_stripe1, (uintmax_t)flp->nfsfl_patoff);
6815                         for (j = 0; j < fhcnt; j++) {
6816                                 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED);
6817                                 nfhlen = fxdr_unsigned(int, *tl);
6818                                 if (nfhlen <= 0 || nfhlen > NFSX_V4FHMAX) {
6819                                         error = NFSERR_BADXDR;
6820                                         goto nfsmout;
6821                                 }
6822                                 nfhp = malloc(sizeof(*nfhp) + nfhlen - 1,
6823                                     M_NFSFH, M_WAITOK);
6824                                 flp->nfsfl_fh[j] = nfhp;
6825                                 flp->nfsfl_fhcnt++;
6826                                 nfhp->nfh_len = nfhlen;
6827                                 NFSM_DISSECT(cp, uint8_t *, NFSM_RNDUP(nfhlen));
6828                                 NFSBCOPY(cp, nfhp->nfh_fh, nfhlen);
6829                         }
6830                 } else if (laytype == NFSLAYOUT_FLEXFILE) {
6831                         NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED +
6832                             NFSX_HYPER);
6833                         mirrorcnt = fxdr_unsigned(int, *(tl + 2));
6834                         NFSCL_DEBUG(4, "mirrorcnt=%d\n", mirrorcnt);
6835                         if (mirrorcnt < 1 || mirrorcnt > NFSDEV_MAXMIRRORS) {
6836                                 error = NFSERR_BADXDR;
6837                                 goto nfsmout;
6838                         }
6839                         flp = malloc(sizeof(*flp) + mirrorcnt *
6840                             sizeof(struct nfsffm), M_NFSFLAYOUT, M_WAITOK);
6841                         flp->nfsfl_flags = NFSFL_FLEXFILE;
6842                         flp->nfsfl_mirrorcnt = mirrorcnt;
6843                         for (j = 0; j < mirrorcnt; j++)
6844                                 flp->nfsfl_ffm[j].devp = NULL;
6845                         flp->nfsfl_off = off;
6846                         if (flp->nfsfl_off + retlen < flp->nfsfl_off)
6847                                 flp->nfsfl_end = UINT64_MAX - flp->nfsfl_off;
6848                         else
6849                                 flp->nfsfl_end = flp->nfsfl_off + retlen;
6850                         flp->nfsfl_iomode = iomode;
6851                         if (gotiomode == -1)
6852                                 gotiomode = flp->nfsfl_iomode;
6853                         flp->nfsfl_stripeunit = fxdr_hyper(tl);
6854                         NFSCL_DEBUG(4, "stripeunit=%ju\n",
6855                             (uintmax_t)flp->nfsfl_stripeunit);
6856                         for (j = 0; j < mirrorcnt; j++) {
6857                                 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED);
6858                                 k = fxdr_unsigned(int, *tl);
6859                                 if (k < 1 || k > 128) {
6860                                         error = NFSERR_BADXDR;
6861                                         goto nfsmout;
6862                                 }
6863                                 NFSCL_DEBUG(4, "servercnt=%d\n", k);
6864                                 for (l = 0; l < k; l++) {
6865                                         NFSM_DISSECT(tl, uint32_t *,
6866                                             NFSX_V4DEVICEID + NFSX_STATEID +
6867                                             2 * NFSX_UNSIGNED);
6868                                         if (l == 0) {
6869                                                 /* Just use the first server. */
6870                                                 NFSBCOPY(tl,
6871                                                     flp->nfsfl_ffm[j].dev,
6872                                                     NFSX_V4DEVICEID);
6873                                                 tl += (NFSX_V4DEVICEID /
6874                                                     NFSX_UNSIGNED);
6875                                                 tl++;
6876                                                 flp->nfsfl_ffm[j].st.seqid =
6877                                                     *tl++;
6878                                                 flp->nfsfl_ffm[j].st.other[0] =
6879                                                     *tl++;
6880                                                 flp->nfsfl_ffm[j].st.other[1] =
6881                                                     *tl++;
6882                                                 flp->nfsfl_ffm[j].st.other[2] =
6883                                                     *tl++;
6884                                                 NFSCL_DEBUG(4, "st.seqid=%u "
6885                                                  "st.o0=0x%x st.o1=0x%x "
6886                                                  "st.o2=0x%x\n",
6887                                                  flp->nfsfl_ffm[j].st.seqid,
6888                                                  flp->nfsfl_ffm[j].st.other[0],
6889                                                  flp->nfsfl_ffm[j].st.other[1],
6890                                                  flp->nfsfl_ffm[j].st.other[2]);
6891                                         } else
6892                                                 tl += ((NFSX_V4DEVICEID +
6893                                                     NFSX_STATEID +
6894                                                     NFSX_UNSIGNED) /
6895                                                     NFSX_UNSIGNED);
6896                                         fhcnt = fxdr_unsigned(int, *tl);
6897                                         NFSCL_DEBUG(4, "fhcnt=%d\n", fhcnt);
6898                                         if (fhcnt < 1 ||
6899                                             fhcnt > NFSDEV_MAXVERS) {
6900                                                 error = NFSERR_BADXDR;
6901                                                 goto nfsmout;
6902                                         }
6903                                         for (m = 0; m < fhcnt; m++) {
6904                                                 NFSM_DISSECT(tl, uint32_t *,
6905                                                     NFSX_UNSIGNED);
6906                                                 nfhlen = fxdr_unsigned(int,
6907                                                     *tl);
6908                                                 NFSCL_DEBUG(4, "nfhlen=%d\n",
6909                                                     nfhlen);
6910                                                 if (nfhlen <= 0 || nfhlen >
6911                                                     NFSX_V4FHMAX) {
6912                                                         error = NFSERR_BADXDR;
6913                                                         goto nfsmout;
6914                                                 }
6915                                                 NFSM_DISSECT(cp, uint8_t *,
6916                                                     NFSM_RNDUP(nfhlen));
6917                                                 if (l == 0) {
6918                                                         flp->nfsfl_ffm[j].fhcnt
6919                                                             = fhcnt;
6920                                                         nfhp = malloc(
6921                                                             sizeof(*nfhp) +
6922                                                             nfhlen - 1, M_NFSFH,
6923                                                             M_WAITOK);
6924                                                         flp->nfsfl_ffm[j].fh[m]
6925                                                             = nfhp;
6926                                                         nfhp->nfh_len = nfhlen;
6927                                                         NFSBCOPY(cp,
6928                                                             nfhp->nfh_fh,
6929                                                             nfhlen);
6930                                                         NFSCL_DEBUG(4,
6931                                                             "got fh\n");
6932                                                 }
6933                                         }
6934                                         /* Now, get the ffsd_user/ffds_group. */
6935                                         error = nfsrv_parseug(nd, 0, &user,
6936                                             &grp, curthread);
6937                                         NFSCL_DEBUG(4, "after parseu=%d\n",
6938                                             error);
6939                                         if (error == 0)
6940                                                 error = nfsrv_parseug(nd, 1,
6941                                                     &user, &grp, curthread);
6942                                         NFSCL_DEBUG(4, "aft parseg=%d\n",
6943                                             grp);
6944                                         if (error != 0)
6945                                                 goto nfsmout;
6946                                         NFSCL_DEBUG(4, "user=%d group=%d\n",
6947                                             user, grp);
6948                                         if (l == 0) {
6949                                                 flp->nfsfl_ffm[j].user = user;
6950                                                 flp->nfsfl_ffm[j].group = grp;
6951                                                 NFSCL_DEBUG(4,
6952                                                     "usr=%d grp=%d\n", user,
6953                                                     grp);
6954                                         }
6955                                 }
6956                         }
6957                         NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED);
6958                         flp->nfsfl_fflags = fxdr_unsigned(uint32_t, *tl++);
6959                         flp->nfsfl_statshint = fxdr_unsigned(uint32_t, *tl);
6960                         NFSCL_DEBUG(4, "fflags=0x%x statshint=%d\n",
6961                             flp->nfsfl_fflags, flp->nfsfl_statshint);
6962                 } else {
6963                         error = NFSERR_BADXDR;
6964                         goto nfsmout;
6965                 }
6966                 if (flp->nfsfl_iomode == gotiomode) {
6967                         /* Keep the list in increasing offset order. */
6968                         tflp = LIST_FIRST(flhp);
6969                         prevflp = NULL;
6970                         while (tflp != NULL &&
6971                             tflp->nfsfl_off < flp->nfsfl_off) {
6972                                 prevflp = tflp;
6973                                 tflp = LIST_NEXT(tflp, nfsfl_list);
6974                         }
6975                         if (prevflp == NULL)
6976                                 LIST_INSERT_HEAD(flhp, flp, nfsfl_list);
6977                         else
6978                                 LIST_INSERT_AFTER(prevflp, flp,
6979                                     nfsfl_list);
6980                         NFSCL_DEBUG(4, "flp inserted\n");
6981                 } else {
6982                         printf("nfscl_layoutget(): got wrong iomode\n");
6983                         nfscl_freeflayout(flp);
6984                 }
6985                 flp = NULL;
6986         }
6987 nfsmout:
6988         NFSCL_DEBUG(4, "eo nfsrv_parselayoutget=%d\n", error);
6989         if (error != 0 && flp != NULL)
6990                 nfscl_freeflayout(flp);
6991         return (error);
6992 }
6993
6994 /*
6995  * Parse a user/group digit string.
6996  */
6997 static int
6998 nfsrv_parseug(struct nfsrv_descript *nd, int dogrp, uid_t *uidp, gid_t *gidp,
6999     NFSPROC_T *p)
7000 {
7001         uint32_t *tl;
7002         char *cp, *str, str0[NFSV4_SMALLSTR + 1];
7003         uint32_t len = 0;
7004         int error = 0;
7005
7006         NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED);
7007         len = fxdr_unsigned(uint32_t, *tl);
7008         str = NULL;
7009         if (len > NFSV4_OPAQUELIMIT) {
7010                 error = NFSERR_BADXDR;
7011                 goto nfsmout;
7012         }
7013         NFSCL_DEBUG(4, "nfsrv_parseug: len=%d\n", len);
7014         if (len == 0) {
7015                 if (dogrp != 0)
7016                         *gidp = GID_NOGROUP;
7017                 else
7018                         *uidp = UID_NOBODY;
7019                 return (0);
7020         }
7021         if (len > NFSV4_SMALLSTR)
7022                 str = malloc(len + 1, M_TEMP, M_WAITOK);
7023         else
7024                 str = str0;
7025         NFSM_DISSECT(cp, char *, NFSM_RNDUP(len));
7026         NFSBCOPY(cp, str, len);
7027         str[len] = '\0';
7028         NFSCL_DEBUG(4, "nfsrv_parseug: str=%s\n", str);
7029         if (dogrp != 0)
7030                 error = nfsv4_strtogid(nd, str, len, gidp);
7031         else
7032                 error = nfsv4_strtouid(nd, str, len, uidp);
7033 nfsmout:
7034         if (len > NFSV4_SMALLSTR)
7035                 free(str, M_TEMP);
7036         NFSCL_DEBUG(4, "eo nfsrv_parseug=%d\n", error);
7037         return (error);
7038 }
7039
7040 /*
7041  * Similar to nfsrpc_getlayout(), except that it uses nfsrpc_openlayget(),
7042  * so that it does both an Open and a Layoutget.
7043  */
7044 static int
7045 nfsrpc_getopenlayout(struct nfsmount *nmp, vnode_t vp, u_int8_t *nfhp,
7046     int fhlen, uint8_t *newfhp, int newfhlen, uint32_t mode,
7047     struct nfsclopen *op, uint8_t *name, int namelen, struct nfscldeleg **dpp,
7048     struct ucred *cred, NFSPROC_T *p)
7049 {
7050         struct nfscllayout *lyp;
7051         struct nfsclflayout *flp;
7052         struct nfsclflayouthead flh;
7053         int error, islocked, layoutlen, recalled, retonclose, usecurstateid;
7054         int layouttype, laystat;
7055         nfsv4stateid_t stateid;
7056         struct nfsclsession *tsep;
7057
7058         error = 0;
7059         if (NFSHASFLEXFILE(nmp))
7060                 layouttype = NFSLAYOUT_FLEXFILE;
7061         else
7062                 layouttype = NFSLAYOUT_NFSV4_1_FILES;
7063         /*
7064          * If lyp is returned non-NULL, there will be a refcnt (shared lock)
7065          * on it, iff flp != NULL or a lock (exclusive lock) on it iff
7066          * flp == NULL.
7067          */
7068         lyp = nfscl_getlayout(nmp->nm_clp, newfhp, newfhlen, 0, &flp,
7069             &recalled);
7070         NFSCL_DEBUG(4, "nfsrpc_getopenlayout nfscl_getlayout lyp=%p\n", lyp);
7071         if (lyp == NULL)
7072                 islocked = 0;
7073         else if (flp != NULL)
7074                 islocked = 1;
7075         else
7076                 islocked = 2;
7077         if ((lyp == NULL || flp == NULL) && recalled == 0) {
7078                 LIST_INIT(&flh);
7079                 tsep = nfsmnt_mdssession(nmp);
7080                 layoutlen = tsep->nfsess_maxcache - (NFSX_STATEID +
7081                     3 * NFSX_UNSIGNED);
7082                 if (lyp == NULL)
7083                         usecurstateid = 1;
7084                 else {
7085                         usecurstateid = 0;
7086                         stateid.seqid = lyp->nfsly_stateid.seqid;
7087                         stateid.other[0] = lyp->nfsly_stateid.other[0];
7088                         stateid.other[1] = lyp->nfsly_stateid.other[1];
7089                         stateid.other[2] = lyp->nfsly_stateid.other[2];
7090                 }
7091                 error = nfsrpc_openlayoutrpc(nmp, vp, nfhp, fhlen,
7092                     newfhp, newfhlen, mode, op, name, namelen,
7093                     dpp, &stateid, usecurstateid, layouttype, layoutlen,
7094                     &retonclose, &flh, &laystat, cred, p);
7095                 NFSCL_DEBUG(4, "aft nfsrpc_openlayoutrpc laystat=%d err=%d\n",
7096                     laystat, error);
7097                 laystat = nfsrpc_layoutgetres(nmp, vp, newfhp, newfhlen,
7098                     &stateid, retonclose, NULL, &lyp, &flh, layouttype, laystat,
7099                     &islocked, cred, p);
7100         } else
7101                 error = nfsrpc_openrpc(nmp, vp, nfhp, fhlen, newfhp, newfhlen,
7102                     mode, op, name, namelen, dpp, 0, 0, cred, p, 0, 0);
7103         if (islocked == 2)
7104                 nfscl_rellayout(lyp, 1);
7105         else if (islocked == 1)
7106                 nfscl_rellayout(lyp, 0);
7107         return (error);
7108 }
7109
7110 /*
7111  * This function does an Open+LayoutGet for an NFSv4.1 mount with pNFS
7112  * enabled, only for the CLAIM_NULL case.  All other NFSv4 Opens are
7113  * handled by nfsrpc_openrpc().
7114  * For the case where op == NULL, dvp is the directory.  When op != NULL, it
7115  * can be NULL.
7116  */
7117 static int
7118 nfsrpc_openlayoutrpc(struct nfsmount *nmp, vnode_t vp, u_int8_t *nfhp,
7119     int fhlen, uint8_t *newfhp, int newfhlen, uint32_t mode,
7120     struct nfsclopen *op, uint8_t *name, int namelen, struct nfscldeleg **dpp,
7121     nfsv4stateid_t *stateidp, int usecurstateid, int layouttype,
7122     int layoutlen, int *retonclosep, struct nfsclflayouthead *flhp,
7123     int *laystatp, struct ucred *cred, NFSPROC_T *p)
7124 {
7125         uint32_t *tl;
7126         struct nfsrv_descript nfsd, *nd = &nfsd;
7127         struct nfscldeleg *ndp = NULL;
7128         struct nfsvattr nfsva;
7129         struct nfsclsession *tsep;
7130         uint32_t rflags, deleg;
7131         nfsattrbit_t attrbits;
7132         int error, ret, acesize, limitby, iomode;
7133
7134         *dpp = NULL;
7135         *laystatp = ENXIO;
7136         nfscl_reqstart(nd, NFSPROC_OPENLAYGET, nmp, nfhp, fhlen, NULL, NULL,
7137             0, 0);
7138         NFSM_BUILD(tl, uint32_t *, 5 * NFSX_UNSIGNED);
7139         *tl++ = txdr_unsigned(op->nfso_own->nfsow_seqid);
7140         *tl++ = txdr_unsigned(mode & NFSV4OPEN_ACCESSBOTH);
7141         *tl++ = txdr_unsigned((mode >> NFSLCK_SHIFT) & NFSV4OPEN_DENYBOTH);
7142         tsep = nfsmnt_mdssession(nmp);
7143         *tl++ = tsep->nfsess_clientid.lval[0];
7144         *tl = tsep->nfsess_clientid.lval[1];
7145         nfsm_strtom(nd, op->nfso_own->nfsow_owner, NFSV4CL_LOCKNAMELEN);
7146         NFSM_BUILD(tl, uint32_t *, 2 * NFSX_UNSIGNED);
7147         *tl++ = txdr_unsigned(NFSV4OPEN_NOCREATE);
7148         *tl = txdr_unsigned(NFSV4OPEN_CLAIMNULL);
7149         nfsm_strtom(nd, name, namelen);
7150         NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED);
7151         *tl = txdr_unsigned(NFSV4OP_GETATTR);
7152         NFSZERO_ATTRBIT(&attrbits);
7153         NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_CHANGE);
7154         NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_TIMEMODIFY);
7155         nfsrv_putattrbit(nd, &attrbits);
7156         NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED);
7157         *tl = txdr_unsigned(NFSV4OP_LAYOUTGET);
7158         if ((mode & NFSV4OPEN_ACCESSWRITE) != 0)
7159                 iomode = NFSLAYOUTIOMODE_RW;
7160         else
7161                 iomode = NFSLAYOUTIOMODE_READ;
7162         nfsrv_setuplayoutget(nd, iomode, 0, UINT64_MAX, 0, stateidp,
7163             layouttype, layoutlen, usecurstateid);
7164         error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, vp, p, cred,
7165             NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL);
7166         if (error != 0)
7167                 return (error);
7168         NFSCL_INCRSEQID(op->nfso_own->nfsow_seqid, nd);
7169         if (nd->nd_repstat != 0)
7170                 *laystatp = nd->nd_repstat;
7171         if ((nd->nd_flag & ND_NOMOREDATA) == 0) {
7172                 /* ND_NOMOREDATA will be set if the Open operation failed. */
7173                 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID +
7174                     6 * NFSX_UNSIGNED);
7175                 op->nfso_stateid.seqid = *tl++;
7176                 op->nfso_stateid.other[0] = *tl++;
7177                 op->nfso_stateid.other[1] = *tl++;
7178                 op->nfso_stateid.other[2] = *tl;
7179                 rflags = fxdr_unsigned(u_int32_t, *(tl + 6));
7180                 error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL);
7181                 if (error != 0)
7182                         goto nfsmout;
7183                 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
7184                 deleg = fxdr_unsigned(u_int32_t, *tl);
7185                 if (deleg == NFSV4OPEN_DELEGATEREAD ||
7186                     deleg == NFSV4OPEN_DELEGATEWRITE) {
7187                         if (!(op->nfso_own->nfsow_clp->nfsc_flags &
7188                               NFSCLFLAGS_FIRSTDELEG))
7189                                 op->nfso_own->nfsow_clp->nfsc_flags |=
7190                                   (NFSCLFLAGS_FIRSTDELEG | NFSCLFLAGS_GOTDELEG);
7191                         ndp = malloc(sizeof(struct nfscldeleg) + newfhlen,
7192                             M_NFSCLDELEG, M_WAITOK);
7193                         LIST_INIT(&ndp->nfsdl_owner);
7194                         LIST_INIT(&ndp->nfsdl_lock);
7195                         ndp->nfsdl_clp = op->nfso_own->nfsow_clp;
7196                         ndp->nfsdl_fhlen = newfhlen;
7197                         NFSBCOPY(newfhp, ndp->nfsdl_fh, newfhlen);
7198                         newnfs_copyincred(cred, &ndp->nfsdl_cred);
7199                         nfscl_lockinit(&ndp->nfsdl_rwlock);
7200                         NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID +
7201                             NFSX_UNSIGNED);
7202                         ndp->nfsdl_stateid.seqid = *tl++;
7203                         ndp->nfsdl_stateid.other[0] = *tl++;
7204                         ndp->nfsdl_stateid.other[1] = *tl++;
7205                         ndp->nfsdl_stateid.other[2] = *tl++;
7206                         ret = fxdr_unsigned(int, *tl);
7207                         if (deleg == NFSV4OPEN_DELEGATEWRITE) {
7208                                 ndp->nfsdl_flags = NFSCLDL_WRITE;
7209                                 /*
7210                                  * Indicates how much the file can grow.
7211                                  */
7212                                 NFSM_DISSECT(tl, u_int32_t *,
7213                                     3 * NFSX_UNSIGNED);
7214                                 limitby = fxdr_unsigned(int, *tl++);
7215                                 switch (limitby) {
7216                                 case NFSV4OPEN_LIMITSIZE:
7217                                         ndp->nfsdl_sizelimit = fxdr_hyper(tl);
7218                                         break;
7219                                 case NFSV4OPEN_LIMITBLOCKS:
7220                                         ndp->nfsdl_sizelimit =
7221                                             fxdr_unsigned(u_int64_t, *tl++);
7222                                         ndp->nfsdl_sizelimit *=
7223                                             fxdr_unsigned(u_int64_t, *tl);
7224                                         break;
7225                                 default:
7226                                         error = NFSERR_BADXDR;
7227                                         goto nfsmout;
7228                                 };
7229                         } else
7230                                 ndp->nfsdl_flags = NFSCLDL_READ;
7231                         if (ret != 0)
7232                                 ndp->nfsdl_flags |= NFSCLDL_RECALL;
7233                         error = nfsrv_dissectace(nd, &ndp->nfsdl_ace, &ret,
7234                             &acesize, p);
7235                         if (error != 0)
7236                                 goto nfsmout;
7237                 } else if (deleg != NFSV4OPEN_DELEGATENONE) {
7238                         error = NFSERR_BADXDR;
7239                         goto nfsmout;
7240                 }
7241                 if ((rflags & NFSV4OPEN_LOCKTYPEPOSIX) != 0 ||
7242                     nfscl_assumeposixlocks)
7243                         op->nfso_posixlock = 1;
7244                 else
7245                         op->nfso_posixlock = 0;
7246                 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
7247                 /* If the 2nd element == NFS_OK, the Getattr succeeded. */
7248                 if (*++tl == 0) {
7249                         error = nfsv4_loadattr(nd, NULL, &nfsva, NULL,
7250                             NULL, 0, NULL, NULL, NULL, NULL, NULL, 0,
7251                             NULL, NULL, NULL, p, cred);
7252                         if (error != 0)
7253                                 goto nfsmout;
7254                         if (ndp != NULL) {
7255                                 ndp->nfsdl_change = nfsva.na_filerev;
7256                                 ndp->nfsdl_modtime = nfsva.na_mtime;
7257                                 ndp->nfsdl_flags |= NFSCLDL_MODTIMESET;
7258                                 *dpp = ndp;
7259                                 ndp = NULL;
7260                         }
7261                         /*
7262                          * At this point, the Open has succeeded, so set
7263                          * nd_repstat = NFS_OK.  If the Layoutget failed,
7264                          * this function just won't return a layout.
7265                          */
7266                         if (nd->nd_repstat == 0) {
7267                                 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED);
7268                                 *laystatp = fxdr_unsigned(int, *++tl);
7269                                 if (*laystatp == 0) {
7270                                         error = nfsrv_parselayoutget(nd,
7271                                             stateidp, retonclosep, flhp);
7272                                         if (error != 0)
7273                                                 *laystatp = error;
7274                                 }
7275                         } else
7276                                 nd->nd_repstat = 0;     /* Return 0 for Open. */
7277                 }
7278         }
7279         if (nd->nd_repstat != 0 && error == 0)
7280                 error = nd->nd_repstat;
7281 nfsmout:
7282         free(ndp, M_NFSCLDELEG);
7283         mbuf_freem(nd->nd_mrep);
7284         return (error);
7285 }
7286
7287 /*
7288  * Similar nfsrpc_createv4(), but also does the LayoutGet operation.
7289  * Used only for mounts with pNFS enabled.
7290  */
7291 static int
7292 nfsrpc_createlayout(vnode_t dvp, char *name, int namelen, struct vattr *vap,
7293     nfsquad_t cverf, int fmode, struct nfsclowner *owp, struct nfscldeleg **dpp,
7294     struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap,
7295     struct nfsvattr *nnap, struct nfsfh **nfhpp, int *attrflagp,
7296     int *dattrflagp, void *dstuff, int *unlockedp, nfsv4stateid_t *stateidp,
7297     int usecurstateid, int layouttype, int layoutlen, int *retonclosep,
7298     struct nfsclflayouthead *flhp, int *laystatp)
7299 {
7300         uint32_t *tl;
7301         int error = 0, deleg, newone, ret, acesize, limitby;
7302         struct nfsrv_descript nfsd, *nd = &nfsd;
7303         struct nfsclopen *op;
7304         struct nfscldeleg *dp = NULL;
7305         struct nfsnode *np;
7306         struct nfsfh *nfhp;
7307         struct nfsclsession *tsep;
7308         nfsattrbit_t attrbits;
7309         nfsv4stateid_t stateid;
7310         struct nfsmount *nmp;
7311
7312         nmp = VFSTONFS(dvp->v_mount);
7313         np = VTONFS(dvp);
7314         *laystatp = ENXIO;
7315         *unlockedp = 0;
7316         *nfhpp = NULL;
7317         *dpp = NULL;
7318         *attrflagp = 0;
7319         *dattrflagp = 0;
7320         if (namelen > NFS_MAXNAMLEN)
7321                 return (ENAMETOOLONG);
7322         NFSCL_REQSTART(nd, NFSPROC_CREATELAYGET, dvp);
7323         /*
7324          * For V4, this is actually an Open op.
7325          */
7326         NFSM_BUILD(tl, u_int32_t *, 5 * NFSX_UNSIGNED);
7327         *tl++ = txdr_unsigned(owp->nfsow_seqid);
7328         *tl++ = txdr_unsigned(NFSV4OPEN_ACCESSWRITE |
7329             NFSV4OPEN_ACCESSREAD);
7330         *tl++ = txdr_unsigned(NFSV4OPEN_DENYNONE);
7331         tsep = nfsmnt_mdssession(nmp);
7332         *tl++ = tsep->nfsess_clientid.lval[0];
7333         *tl = tsep->nfsess_clientid.lval[1];
7334         nfsm_strtom(nd, owp->nfsow_owner, NFSV4CL_LOCKNAMELEN);
7335         NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
7336         *tl++ = txdr_unsigned(NFSV4OPEN_CREATE);
7337         if ((fmode & O_EXCL) != 0) {
7338                 if (NFSHASSESSPERSIST(nmp)) {
7339                         /* Use GUARDED for persistent sessions. */
7340                         *tl = txdr_unsigned(NFSCREATE_GUARDED);
7341                         nfscl_fillsattr(nd, vap, dvp, 0, 0);
7342                 } else {
7343                         /* Otherwise, use EXCLUSIVE4_1. */
7344                         *tl = txdr_unsigned(NFSCREATE_EXCLUSIVE41);
7345                         NFSM_BUILD(tl, u_int32_t *, NFSX_VERF);
7346                         *tl++ = cverf.lval[0];
7347                         *tl = cverf.lval[1];
7348                         nfscl_fillsattr(nd, vap, dvp, 0, 0);
7349                 }
7350         } else {
7351                 *tl = txdr_unsigned(NFSCREATE_UNCHECKED);
7352                 nfscl_fillsattr(nd, vap, dvp, 0, 0);
7353         }
7354         NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
7355         *tl = txdr_unsigned(NFSV4OPEN_CLAIMNULL);
7356         nfsm_strtom(nd, name, namelen);
7357         /* Get the new file's handle and attributes, plus save the FH. */
7358         NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED);
7359         *tl++ = txdr_unsigned(NFSV4OP_SAVEFH);
7360         *tl++ = txdr_unsigned(NFSV4OP_GETFH);
7361         *tl = txdr_unsigned(NFSV4OP_GETATTR);
7362         NFSGETATTR_ATTRBIT(&attrbits);
7363         nfsrv_putattrbit(nd, &attrbits);
7364         /* Get the directory's post-op attributes. */
7365         NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
7366         *tl = txdr_unsigned(NFSV4OP_PUTFH);
7367         nfsm_fhtom(nd, np->n_fhp->nfh_fh, np->n_fhp->nfh_len, 0);
7368         NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED);
7369         *tl = txdr_unsigned(NFSV4OP_GETATTR);
7370         nfsrv_putattrbit(nd, &attrbits);
7371         NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
7372         *tl++ = txdr_unsigned(NFSV4OP_RESTOREFH);
7373         *tl = txdr_unsigned(NFSV4OP_LAYOUTGET);
7374         nfsrv_setuplayoutget(nd, NFSLAYOUTIOMODE_RW, 0, UINT64_MAX, 0, stateidp,
7375             layouttype, layoutlen, usecurstateid);
7376         error = nfscl_request(nd, dvp, p, cred, dstuff);
7377         if (error != 0)
7378                 return (error);
7379         NFSCL_DEBUG(4, "nfsrpc_createlayout stat=%d err=%d\n", nd->nd_repstat,
7380             error);
7381         if (nd->nd_repstat != 0)
7382                 *laystatp = nd->nd_repstat;
7383         NFSCL_INCRSEQID(owp->nfsow_seqid, nd);
7384         if ((nd->nd_flag & ND_NOMOREDATA) == 0) {
7385                 NFSCL_DEBUG(4, "nfsrpc_createlayout open succeeded\n");
7386                 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID +
7387                     6 * NFSX_UNSIGNED);
7388                 stateid.seqid = *tl++;
7389                 stateid.other[0] = *tl++;
7390                 stateid.other[1] = *tl++;
7391                 stateid.other[2] = *tl;
7392                 nfsrv_getattrbits(nd, &attrbits, NULL, NULL);
7393                 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
7394                 deleg = fxdr_unsigned(int, *tl);
7395                 if (deleg == NFSV4OPEN_DELEGATEREAD ||
7396                     deleg == NFSV4OPEN_DELEGATEWRITE) {
7397                         if (!(owp->nfsow_clp->nfsc_flags &
7398                               NFSCLFLAGS_FIRSTDELEG))
7399                                 owp->nfsow_clp->nfsc_flags |=
7400                                   (NFSCLFLAGS_FIRSTDELEG | NFSCLFLAGS_GOTDELEG);
7401                         dp = malloc(sizeof(struct nfscldeleg) + NFSX_V4FHMAX,
7402                             M_NFSCLDELEG, M_WAITOK);
7403                         LIST_INIT(&dp->nfsdl_owner);
7404                         LIST_INIT(&dp->nfsdl_lock);
7405                         dp->nfsdl_clp = owp->nfsow_clp;
7406                         newnfs_copyincred(cred, &dp->nfsdl_cred);
7407                         nfscl_lockinit(&dp->nfsdl_rwlock);
7408                         NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID +
7409                             NFSX_UNSIGNED);
7410                         dp->nfsdl_stateid.seqid = *tl++;
7411                         dp->nfsdl_stateid.other[0] = *tl++;
7412                         dp->nfsdl_stateid.other[1] = *tl++;
7413                         dp->nfsdl_stateid.other[2] = *tl++;
7414                         ret = fxdr_unsigned(int, *tl);
7415                         if (deleg == NFSV4OPEN_DELEGATEWRITE) {
7416                                 dp->nfsdl_flags = NFSCLDL_WRITE;
7417                                 /*
7418                                  * Indicates how much the file can grow.
7419                                  */
7420                                 NFSM_DISSECT(tl, u_int32_t *,
7421                                     3 * NFSX_UNSIGNED);
7422                                 limitby = fxdr_unsigned(int, *tl++);
7423                                 switch (limitby) {
7424                                 case NFSV4OPEN_LIMITSIZE:
7425                                         dp->nfsdl_sizelimit = fxdr_hyper(tl);
7426                                         break;
7427                                 case NFSV4OPEN_LIMITBLOCKS:
7428                                         dp->nfsdl_sizelimit =
7429                                             fxdr_unsigned(u_int64_t, *tl++);
7430                                         dp->nfsdl_sizelimit *=
7431                                             fxdr_unsigned(u_int64_t, *tl);
7432                                         break;
7433                                 default:
7434                                         error = NFSERR_BADXDR;
7435                                         goto nfsmout;
7436                                 };
7437                         } else {
7438                                 dp->nfsdl_flags = NFSCLDL_READ;
7439                         }
7440                         if (ret != 0)
7441                                 dp->nfsdl_flags |= NFSCLDL_RECALL;
7442                         error = nfsrv_dissectace(nd, &dp->nfsdl_ace, &ret,
7443                             &acesize, p);
7444                         if (error != 0)
7445                                 goto nfsmout;
7446                 } else if (deleg != NFSV4OPEN_DELEGATENONE) {
7447                         error = NFSERR_BADXDR;
7448                         goto nfsmout;
7449                 }
7450
7451                 /* Now, we should have the status for the SaveFH. */
7452                 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED);
7453                 if (*++tl == 0) {
7454                         NFSCL_DEBUG(4, "nfsrpc_createlayout SaveFH ok\n");
7455                         /*
7456                          * Now, process the GetFH and Getattr for the newly
7457                          * created file. nfscl_mtofh() will set
7458                          * ND_NOMOREDATA if these weren't successful.
7459                          */
7460                         error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp);
7461                         NFSCL_DEBUG(4, "aft nfscl_mtofh err=%d\n", error);
7462                         if (error != 0)
7463                                 goto nfsmout;
7464                 } else
7465                         nd->nd_flag |= ND_NOMOREDATA;
7466                 /* Now we have the PutFH and Getattr for the directory. */
7467                 if ((nd->nd_flag & ND_NOMOREDATA) == 0) {
7468                         NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED);
7469                         if (*++tl != 0)
7470                                 nd->nd_flag |= ND_NOMOREDATA;
7471                         else {
7472                                 NFSM_DISSECT(tl, uint32_t *, 2 *
7473                                     NFSX_UNSIGNED);
7474                                 if (*++tl != 0)
7475                                         nd->nd_flag |= ND_NOMOREDATA;
7476                         }
7477                 }
7478                 if ((nd->nd_flag & ND_NOMOREDATA) == 0) {
7479                         /* Load the directory attributes. */
7480                         error = nfsm_loadattr(nd, dnap);
7481                         NFSCL_DEBUG(4, "aft nfsm_loadattr err=%d\n", error);
7482                         if (error != 0)
7483                                 goto nfsmout;
7484                         *dattrflagp = 1;
7485                         if (dp != NULL && *attrflagp != 0) {
7486                                 dp->nfsdl_change = nnap->na_filerev;
7487                                 dp->nfsdl_modtime = nnap->na_mtime;
7488                                 dp->nfsdl_flags |= NFSCLDL_MODTIMESET;
7489                         }
7490                         /*
7491                          * We can now complete the Open state.
7492                          */
7493                         nfhp = *nfhpp;
7494                         if (dp != NULL) {
7495                                 dp->nfsdl_fhlen = nfhp->nfh_len;
7496                                 NFSBCOPY(nfhp->nfh_fh, dp->nfsdl_fh,
7497                                     nfhp->nfh_len);
7498                         }
7499                         /*
7500                          * Get an Open structure that will be
7501                          * attached to the OpenOwner, acquired already.
7502                          */
7503                         error = nfscl_open(dvp, nfhp->nfh_fh, nfhp->nfh_len,
7504                             (NFSV4OPEN_ACCESSWRITE | NFSV4OPEN_ACCESSREAD), 0,
7505                             cred, p, NULL, &op, &newone, NULL, 0);
7506                         if (error != 0)
7507                                 goto nfsmout;
7508                         op->nfso_stateid = stateid;
7509                         newnfs_copyincred(cred, &op->nfso_cred);
7510
7511                         nfscl_openrelease(nmp, op, error, newone);
7512                         *unlockedp = 1;
7513
7514                         /* Now, handle the RestoreFH and LayoutGet. */
7515                         if (nd->nd_repstat == 0) {
7516                                 NFSM_DISSECT(tl, uint32_t *, 4 * NFSX_UNSIGNED);
7517                                 *laystatp = fxdr_unsigned(int, *(tl + 3));
7518                                 if (*laystatp == 0) {
7519                                         error = nfsrv_parselayoutget(nd,
7520                                             stateidp, retonclosep, flhp);
7521                                         if (error != 0)
7522                                                 *laystatp = error;
7523                                 }
7524                                 NFSCL_DEBUG(4, "aft nfsrv_parselayout err=%d\n",
7525                                     error);
7526                         } else
7527                                 nd->nd_repstat = 0;
7528                 }
7529         }
7530         if (nd->nd_repstat != 0 && error == 0)
7531                 error = nd->nd_repstat;
7532         if (error == NFSERR_STALECLIENTID || error == NFSERR_BADSESSION)
7533                 nfscl_initiate_recovery(owp->nfsow_clp);
7534 nfsmout:
7535         NFSCL_DEBUG(4, "eo nfsrpc_createlayout err=%d\n", error);
7536         if (error == 0)
7537                 *dpp = dp;
7538         else
7539                 free(dp, M_NFSCLDELEG);
7540         mbuf_freem(nd->nd_mrep);
7541         return (error);
7542 }
7543
7544 /*
7545  * Similar to nfsrpc_getopenlayout(), except that it used for the Create case.
7546  */
7547 static int
7548 nfsrpc_getcreatelayout(vnode_t dvp, char *name, int namelen, struct vattr *vap,
7549     nfsquad_t cverf, int fmode, struct nfsclowner *owp, struct nfscldeleg **dpp,
7550     struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap,
7551     struct nfsvattr *nnap, struct nfsfh **nfhpp, int *attrflagp,
7552     int *dattrflagp, void *dstuff, int *unlockedp)
7553 {
7554         struct nfscllayout *lyp;
7555         struct nfsclflayouthead flh;
7556         struct nfsfh *nfhp;
7557         struct nfsclsession *tsep;
7558         struct nfsmount *nmp;
7559         nfsv4stateid_t stateid;
7560         int error, layoutlen, layouttype, retonclose, laystat;
7561
7562         error = 0;
7563         nmp = VFSTONFS(dvp->v_mount);
7564         if (NFSHASFLEXFILE(nmp))
7565                 layouttype = NFSLAYOUT_FLEXFILE;
7566         else
7567                 layouttype = NFSLAYOUT_NFSV4_1_FILES;
7568         LIST_INIT(&flh);
7569         tsep = nfsmnt_mdssession(nmp);
7570         layoutlen = tsep->nfsess_maxcache - (NFSX_STATEID + 3 * NFSX_UNSIGNED);
7571         error = nfsrpc_createlayout(dvp, name, namelen, vap, cverf, fmode,
7572             owp, dpp, cred, p, dnap, nnap, nfhpp, attrflagp, dattrflagp,
7573             dstuff, unlockedp, &stateid, 1, layouttype, layoutlen, &retonclose,
7574             &flh, &laystat);
7575         NFSCL_DEBUG(4, "aft nfsrpc_createlayoutrpc laystat=%d err=%d\n",
7576             laystat, error);
7577         lyp = NULL;
7578         if (laystat == 0) {
7579                 nfhp = *nfhpp;
7580                 laystat = nfsrpc_layoutgetres(nmp, dvp, nfhp->nfh_fh,
7581                     nfhp->nfh_len, &stateid, retonclose, NULL, &lyp, &flh,
7582                     layouttype, laystat, NULL, cred, p);
7583         } else
7584                 laystat = nfsrpc_layoutgetres(nmp, dvp, NULL, 0, &stateid,
7585                     retonclose, NULL, &lyp, &flh, layouttype, laystat, NULL,
7586                     cred, p);
7587         if (laystat == 0)
7588                 nfscl_rellayout(lyp, 0);
7589         return (error);
7590 }
7591
7592 /*
7593  * Process the results of a layoutget() operation.
7594  */
7595 static int
7596 nfsrpc_layoutgetres(struct nfsmount *nmp, vnode_t vp, uint8_t *newfhp,
7597     int newfhlen, nfsv4stateid_t *stateidp, int retonclose, uint32_t *notifybit,
7598     struct nfscllayout **lypp, struct nfsclflayouthead *flhp, int layouttype,
7599     int laystat, int *islockedp, struct ucred *cred, NFSPROC_T *p)
7600 {
7601         struct nfsclflayout *tflp;
7602         struct nfscldevinfo *dip;
7603         uint8_t *dev;
7604         int i, mirrorcnt;
7605
7606         if (laystat == NFSERR_UNKNLAYOUTTYPE) {
7607                 NFSLOCKMNT(nmp);
7608                 if (!NFSHASFLEXFILE(nmp)) {
7609                         /* Switch to using Flex File Layout. */
7610                         nmp->nm_state |= NFSSTA_FLEXFILE;
7611                 } else if (layouttype == NFSLAYOUT_FLEXFILE) {
7612                         /* Disable pNFS. */
7613                         NFSCL_DEBUG(1, "disable PNFS\n");
7614                         nmp->nm_state &= ~(NFSSTA_PNFS | NFSSTA_FLEXFILE);
7615                 }
7616                 NFSUNLOCKMNT(nmp);
7617         }
7618         if (laystat == 0) {
7619                 NFSCL_DEBUG(4, "nfsrpc_layoutgetres at FOREACH\n");
7620                 LIST_FOREACH(tflp, flhp, nfsfl_list) {
7621                         if (layouttype == NFSLAYOUT_FLEXFILE)
7622                                 mirrorcnt = tflp->nfsfl_mirrorcnt;
7623                         else
7624                                 mirrorcnt = 1;
7625                         for (i = 0; i < mirrorcnt; i++) {
7626                                 laystat = nfscl_adddevinfo(nmp, NULL, i, tflp);
7627                                 NFSCL_DEBUG(4, "aft adddev=%d\n", laystat);
7628                                 if (laystat != 0) {
7629                                         if (layouttype == NFSLAYOUT_FLEXFILE)
7630                                                 dev = tflp->nfsfl_ffm[i].dev;
7631                                         else
7632                                                 dev = tflp->nfsfl_dev;
7633                                         laystat = nfsrpc_getdeviceinfo(nmp, dev,
7634                                             layouttype, notifybit, &dip, cred,
7635                                             p);
7636                                         NFSCL_DEBUG(4, "aft nfsrpc_gdi=%d\n",
7637                                             laystat);
7638                                         if (laystat != 0)
7639                                                 goto out;
7640                                         laystat = nfscl_adddevinfo(nmp, dip, i,
7641                                             tflp);
7642                                         if (laystat != 0)
7643                                                 printf("nfsrpc_layoutgetresout"
7644                                                     ": cannot add\n");
7645                                 }
7646                         }
7647                 }
7648         }
7649 out:
7650         if (laystat == 0) {
7651                 /*
7652                  * nfscl_layout() always returns with the nfsly_lock
7653                  * set to a refcnt (shared lock).
7654                  * Passing in dvp is sufficient, since it is only used to
7655                  * get the fsid for the file system.
7656                  */
7657                 laystat = nfscl_layout(nmp, vp, newfhp, newfhlen, stateidp,
7658                     layouttype, retonclose, flhp, lypp, cred, p);
7659                 NFSCL_DEBUG(4, "nfsrpc_layoutgetres: aft nfscl_layout=%d\n",
7660                     laystat);
7661                 if (laystat == 0 && islockedp != NULL)
7662                         *islockedp = 1;
7663         }
7664         return (laystat);
7665 }
7666