nfs_clrpcops.c revision 207170
1/*- 2 * Copyright (c) 1989, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley by 6 * Rick Macklem at The University of Guelph. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 4. Neither the name of the University nor the names of its contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 * 32 */ 33 34#include <sys/cdefs.h> 35__FBSDID("$FreeBSD: head/sys/fs/nfsclient/nfs_clrpcops.c 207170 2010-04-24 22:52:14Z rmacklem $"); 36 37/* 38 * Rpc op calls, generally called from the vnode op calls or through the 39 * buffer cache, for NFS v2, 3 and 4. 40 * These do not normally make any changes to vnode arguments or use 41 * structures that might change between the VFS variants. The returned 42 * arguments are all at the end, after the NFSPROC_T *p one. 43 */ 44 45#ifndef APPLEKEXT 46#include <fs/nfs/nfsport.h> 47 48/* 49 * Global variables 50 */ 51extern int nfs_numnfscbd; 52extern struct timeval nfsboottime; 53extern u_int32_t newnfs_false, newnfs_true; 54extern nfstype nfsv34_type[9]; 55extern int nfsrv_useacl; 56extern char nfsv4_callbackaddr[INET6_ADDRSTRLEN]; 57NFSCLSTATEMUTEX; 58int nfstest_outofseq = 0; 59int nfscl_assumeposixlocks = 1; 60int nfscl_enablecallb = 0; 61short nfsv4_cbport = NFSV4_CBPORT; 62int nfstest_openallsetattr = 0; 63#endif /* !APPLEKEXT */ 64 65#define DIRHDSIZ (sizeof (struct dirent) - (MAXNAMLEN + 1)) 66 67static int nfsrpc_setattrrpc(vnode_t , struct vattr *, nfsv4stateid_t *, 68 struct ucred *, NFSPROC_T *, struct nfsvattr *, int *, void *); 69static int nfsrpc_readrpc(vnode_t , struct uio *, struct ucred *, 70 nfsv4stateid_t *, NFSPROC_T *, struct nfsvattr *, int *, void *); 71static int nfsrpc_writerpc(vnode_t , struct uio *, int *, u_char *, 72 struct ucred *, nfsv4stateid_t *, NFSPROC_T *, struct nfsvattr *, int *, 73 void *); 74static int nfsrpc_createv23(vnode_t , char *, int, struct vattr *, 75 nfsquad_t, int, struct ucred *, NFSPROC_T *, struct nfsvattr *, 76 struct nfsvattr *, struct nfsfh **, int *, int *, void *); 77static int nfsrpc_createv4(vnode_t , char *, int, struct vattr *, 78 nfsquad_t, int, struct nfsclowner *, struct nfscldeleg **, struct ucred *, 79 NFSPROC_T *, struct nfsvattr *, struct nfsvattr *, struct nfsfh **, int *, 80 int *, void *, int *); 81static int nfsrpc_locku(struct nfsrv_descript *, struct nfsmount *, 82 struct nfscllockowner *, u_int64_t, u_int64_t, 83 u_int32_t, struct ucred *, NFSPROC_T *, int); 84static int nfsrpc_setaclrpc(vnode_t, struct ucred *, NFSPROC_T *, 85 struct acl *, nfsv4stateid_t *, void *); 86 87/* 88 * nfs null call from vfs. 89 */ 90APPLESTATIC int 91nfsrpc_null(vnode_t vp, struct ucred *cred, NFSPROC_T *p) 92{ 93 int error; 94 struct nfsrv_descript nfsd, *nd = &nfsd; 95 96 NFSCL_REQSTART(nd, NFSPROC_NULL, vp); 97 error = nfscl_request(nd, vp, p, cred, NULL); 98 if (nd->nd_repstat && !error) 99 error = nd->nd_repstat; 100 mbuf_freem(nd->nd_mrep); 101 return (error); 102} 103 104/* 105 * nfs access rpc op. 106 * For nfs version 3 and 4, use the access rpc to check accessibility. If file 107 * modes are changed on the server, accesses might still fail later. 108 */ 109APPLESTATIC int 110nfsrpc_access(vnode_t vp, int acmode, struct ucred *cred, 111 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp) 112{ 113 int error; 114 u_int32_t mode, rmode; 115 116 if (acmode & VREAD) 117 mode = NFSACCESS_READ; 118 else 119 mode = 0; 120 if (vnode_vtype(vp) == VDIR) { 121 if (acmode & VWRITE) 122 mode |= (NFSACCESS_MODIFY | NFSACCESS_EXTEND | 123 NFSACCESS_DELETE); 124 if (acmode & VEXEC) 125 mode |= NFSACCESS_LOOKUP; 126 } else { 127 if (acmode & VWRITE) 128 mode |= (NFSACCESS_MODIFY | NFSACCESS_EXTEND); 129 if (acmode & VEXEC) 130 mode |= NFSACCESS_EXECUTE; 131 } 132 133 /* 134 * Now, just call nfsrpc_accessrpc() to do the actual RPC. 135 */ 136 error = nfsrpc_accessrpc(vp, mode, cred, p, nap, attrflagp, &rmode, 137 NULL); 138 139 /* 140 * The NFS V3 spec does not clarify whether or not 141 * the returned access bits can be a superset of 142 * the ones requested, so... 143 */ 144 if (!error && (rmode & mode) != mode) 145 error = EACCES; 146 return (error); 147} 148 149/* 150 * The actual rpc, separated out for Darwin. 151 */ 152APPLESTATIC int 153nfsrpc_accessrpc(vnode_t vp, u_int32_t mode, struct ucred *cred, 154 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, u_int32_t *rmodep, 155 void *stuff) 156{ 157 u_int32_t *tl; 158 u_int32_t supported, rmode; 159 int error; 160 struct nfsrv_descript nfsd, *nd = &nfsd; 161 nfsattrbit_t attrbits; 162 163 *attrflagp = 0; 164 supported = mode; 165 NFSCL_REQSTART(nd, NFSPROC_ACCESS, vp); 166 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 167 *tl = txdr_unsigned(mode); 168 if (nd->nd_flag & ND_NFSV4) { 169 /* 170 * And do a Getattr op. 171 */ 172 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 173 *tl = txdr_unsigned(NFSV4OP_GETATTR); 174 NFSGETATTR_ATTRBIT(&attrbits); 175 (void) nfsrv_putattrbit(nd, &attrbits); 176 } 177 error = nfscl_request(nd, vp, p, cred, stuff); 178 if (error) 179 return (error); 180 if (nd->nd_flag & ND_NFSV3) { 181 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 182 if (error) 183 goto nfsmout; 184 } 185 if (!nd->nd_repstat) { 186 if (nd->nd_flag & ND_NFSV4) { 187 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 188 supported = fxdr_unsigned(u_int32_t, *tl++); 189 } else { 190 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 191 } 192 rmode = fxdr_unsigned(u_int32_t, *tl); 193 if (nd->nd_flag & ND_NFSV4) 194 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 195 196 /* 197 * It's not obvious what should be done about 198 * unsupported access modes. For now, be paranoid 199 * and clear the unsupported ones. 200 */ 201 rmode &= supported; 202 *rmodep = rmode; 203 } else 204 error = nd->nd_repstat; 205nfsmout: 206 mbuf_freem(nd->nd_mrep); 207 return (error); 208} 209 210/* 211 * nfs open rpc 212 */ 213APPLESTATIC int 214nfsrpc_open(vnode_t vp, int amode, struct ucred *cred, NFSPROC_T *p) 215{ 216 struct nfsclopen *op; 217 struct nfscldeleg *dp; 218 struct nfsfh *nfhp; 219 struct nfsnode *np = VTONFS(vp); 220 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 221 u_int32_t mode, clidrev; 222 int ret, newone, error, expireret = 0, retrycnt; 223 224 /* 225 * For NFSv4, Open Ops are only done on Regular Files. 226 */ 227 if (vnode_vtype(vp) != VREG) 228 return (0); 229 mode = 0; 230 if (amode & FREAD) 231 mode |= NFSV4OPEN_ACCESSREAD; 232 if (amode & FWRITE) 233 mode |= NFSV4OPEN_ACCESSWRITE; 234 nfhp = np->n_fhp; 235 236 retrycnt = 0; 237#ifdef notdef 238{ char name[100]; int namel; 239namel = (np->n_v4->n4_namelen < 100) ? np->n_v4->n4_namelen : 99; 240bcopy(NFS4NODENAME(np->n_v4), name, namel); 241name[namel] = '\0'; 242printf("rpcopen p=0x%x name=%s",p->p_pid,name); 243if (nfhp->nfh_len > 0) printf(" fh=0x%x\n",nfhp->nfh_fh[12]); 244else printf(" fhl=0\n"); 245} 246#endif 247 do { 248 dp = NULL; 249 error = nfscl_open(vp, nfhp->nfh_fh, nfhp->nfh_len, mode, 1, 250 cred, p, NULL, &op, &newone, &ret, 1); 251 if (error) { 252 return (error); 253 } 254 if (nmp->nm_clp != NULL) 255 clidrev = nmp->nm_clp->nfsc_clientidrev; 256 else 257 clidrev = 0; 258 if (ret == NFSCLOPEN_DOOPEN) { 259 if (np->n_v4 != NULL) { 260 error = nfsrpc_openrpc(nmp, vp, np->n_v4->n4_data, 261 np->n_v4->n4_fhlen, np->n_fhp->nfh_fh, 262 np->n_fhp->nfh_len, mode, op, 263 NFS4NODENAME(np->n_v4), np->n_v4->n4_namelen, &dp, 264 0, 0x0, cred, p, 0, 0); 265 if (dp != NULL) { 266#ifdef APPLE 267 OSBitAndAtomic((int32_t)~NDELEGMOD, (UInt32 *)&np->n_flag); 268#else 269 NFSLOCKNODE(np); 270 np->n_flag &= ~NDELEGMOD; 271 NFSUNLOCKNODE(np); 272#endif 273 (void) nfscl_deleg(nmp->nm_mountp, 274 op->nfso_own->nfsow_clp, 275 nfhp->nfh_fh, nfhp->nfh_len, cred, p, &dp); 276 } 277 } else { 278 error = EIO; 279 } 280 newnfs_copyincred(cred, &op->nfso_cred); 281 } else if (ret == NFSCLOPEN_SETCRED) 282 /* 283 * This is a new local open on a delegation. It needs 284 * to have credentials so that an open can be done 285 * against the server during recovery. 286 */ 287 newnfs_copyincred(cred, &op->nfso_cred); 288 289 /* 290 * nfso_opencnt is the count of how many VOP_OPEN()s have 291 * been done on this Open successfully and a VOP_CLOSE() 292 * is expected for each of these. 293 * If error is non-zero, don't increment it, since the Open 294 * hasn't succeeded yet. 295 */ 296 if (!error) 297 op->nfso_opencnt++; 298 nfscl_openrelease(op, error, newone); 299 if (error == NFSERR_GRACE || error == NFSERR_STALECLIENTID || 300 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY) { 301 (void) nfs_catnap(PZERO, error, "nfs_open"); 302 } else if ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) 303 && clidrev != 0) { 304 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p); 305 retrycnt++; 306 } 307 } while (error == NFSERR_GRACE || error == NFSERR_STALECLIENTID || 308 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 309 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) && 310 expireret == 0 && clidrev != 0 && retrycnt < 4)); 311 if (error && retrycnt >= 4) 312 error = EIO; 313 return (error); 314} 315 316/* 317 * the actual open rpc 318 */ 319APPLESTATIC int 320nfsrpc_openrpc(struct nfsmount *nmp, vnode_t vp, u_int8_t *nfhp, int fhlen, 321 u_int8_t *newfhp, int newfhlen, u_int32_t mode, struct nfsclopen *op, 322 u_int8_t *name, int namelen, struct nfscldeleg **dpp, 323 int reclaim, u_int32_t delegtype, struct ucred *cred, NFSPROC_T *p, 324 int syscred, int recursed) 325{ 326 u_int32_t *tl; 327 struct nfsrv_descript nfsd, *nd = &nfsd; 328 struct nfscldeleg *dp, *ndp = NULL; 329 struct nfsvattr nfsva; 330 u_int32_t rflags, deleg; 331 nfsattrbit_t attrbits; 332 int error, ret, acesize, limitby; 333 334 dp = *dpp; 335 *dpp = NULL; 336 nfscl_reqstart(nd, NFSPROC_OPEN, nmp, nfhp, fhlen, NULL); 337 NFSM_BUILD(tl, u_int32_t *, 5 * NFSX_UNSIGNED); 338 *tl++ = txdr_unsigned(op->nfso_own->nfsow_seqid); 339 *tl++ = txdr_unsigned(mode & NFSV4OPEN_ACCESSBOTH); 340 *tl++ = txdr_unsigned((mode >> NFSLCK_SHIFT) & NFSV4OPEN_DENYBOTH); 341 *tl++ = op->nfso_own->nfsow_clp->nfsc_clientid.lval[0]; 342 *tl = op->nfso_own->nfsow_clp->nfsc_clientid.lval[1]; 343 (void) nfsm_strtom(nd, op->nfso_own->nfsow_owner, NFSV4CL_LOCKNAMELEN); 344 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 345 *tl++ = txdr_unsigned(NFSV4OPEN_NOCREATE); 346 if (reclaim) { 347 *tl = txdr_unsigned(NFSV4OPEN_CLAIMPREVIOUS); 348 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 349 *tl = txdr_unsigned(delegtype); 350 } else { 351 if (dp != NULL) { 352 *tl = txdr_unsigned(NFSV4OPEN_CLAIMDELEGATECUR); 353 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID); 354 *tl++ = dp->nfsdl_stateid.seqid; 355 *tl++ = dp->nfsdl_stateid.other[0]; 356 *tl++ = dp->nfsdl_stateid.other[1]; 357 *tl = dp->nfsdl_stateid.other[2]; 358 } else { 359 *tl = txdr_unsigned(NFSV4OPEN_CLAIMNULL); 360 } 361 (void) nfsm_strtom(nd, name, namelen); 362 } 363 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 364 *tl = txdr_unsigned(NFSV4OP_GETATTR); 365 NFSZERO_ATTRBIT(&attrbits); 366 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_CHANGE); 367 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_TIMEMODIFY); 368 (void) nfsrv_putattrbit(nd, &attrbits); 369 if (syscred) 370 nd->nd_flag |= ND_USEGSSNAME; 371 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, vp, p, cred, 372 NFS_PROG, NFS_VER4, NULL, 1, NULL); 373 if (error) 374 return (error); 375 NFSCL_INCRSEQID(op->nfso_own->nfsow_seqid, nd); 376 if (!nd->nd_repstat) { 377 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID + 378 6 * NFSX_UNSIGNED); 379 op->nfso_stateid.seqid = *tl++; 380 op->nfso_stateid.other[0] = *tl++; 381 op->nfso_stateid.other[1] = *tl++; 382 op->nfso_stateid.other[2] = *tl; 383 rflags = fxdr_unsigned(u_int32_t, *(tl + 6)); 384 error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL); 385 if (error) 386 goto nfsmout; 387 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 388 deleg = fxdr_unsigned(u_int32_t, *tl); 389 if (deleg == NFSV4OPEN_DELEGATEREAD || 390 deleg == NFSV4OPEN_DELEGATEWRITE) { 391 if (!(op->nfso_own->nfsow_clp->nfsc_flags & 392 NFSCLFLAGS_FIRSTDELEG)) 393 op->nfso_own->nfsow_clp->nfsc_flags |= 394 (NFSCLFLAGS_FIRSTDELEG | NFSCLFLAGS_GOTDELEG); 395 MALLOC(ndp, struct nfscldeleg *, 396 sizeof (struct nfscldeleg) + newfhlen, 397 M_NFSCLDELEG, M_WAITOK); 398 LIST_INIT(&ndp->nfsdl_owner); 399 LIST_INIT(&ndp->nfsdl_lock); 400 ndp->nfsdl_clp = op->nfso_own->nfsow_clp; 401 ndp->nfsdl_fhlen = newfhlen; 402 NFSBCOPY(newfhp, ndp->nfsdl_fh, newfhlen); 403 newnfs_copyincred(cred, &ndp->nfsdl_cred); 404 nfscl_lockinit(&ndp->nfsdl_rwlock); 405 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID + 406 NFSX_UNSIGNED); 407 ndp->nfsdl_stateid.seqid = *tl++; 408 ndp->nfsdl_stateid.other[0] = *tl++; 409 ndp->nfsdl_stateid.other[1] = *tl++; 410 ndp->nfsdl_stateid.other[2] = *tl++; 411 ret = fxdr_unsigned(int, *tl); 412 if (deleg == NFSV4OPEN_DELEGATEWRITE) { 413 ndp->nfsdl_flags = NFSCLDL_WRITE; 414 /* 415 * Indicates how much the file can grow. 416 */ 417 NFSM_DISSECT(tl, u_int32_t *, 418 3 * NFSX_UNSIGNED); 419 limitby = fxdr_unsigned(int, *tl++); 420 switch (limitby) { 421 case NFSV4OPEN_LIMITSIZE: 422 ndp->nfsdl_sizelimit = fxdr_hyper(tl); 423 break; 424 case NFSV4OPEN_LIMITBLOCKS: 425 ndp->nfsdl_sizelimit = 426 fxdr_unsigned(u_int64_t, *tl++); 427 ndp->nfsdl_sizelimit *= 428 fxdr_unsigned(u_int64_t, *tl); 429 break; 430 default: 431 error = NFSERR_BADXDR; 432 goto nfsmout; 433 }; 434 } else { 435 ndp->nfsdl_flags = NFSCLDL_READ; 436 } 437 if (ret) 438 ndp->nfsdl_flags |= NFSCLDL_RECALL; 439 error = nfsrv_dissectace(nd, &ndp->nfsdl_ace, &ret, 440 &acesize, p); 441 if (error) 442 goto nfsmout; 443 } else if (deleg != NFSV4OPEN_DELEGATENONE) { 444 error = NFSERR_BADXDR; 445 goto nfsmout; 446 } 447 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 448 error = nfsv4_loadattr(nd, NULL, &nfsva, NULL, 449 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0, 450 NULL, NULL, NULL, p, cred); 451 if (error) 452 goto nfsmout; 453 if (ndp != NULL) { 454 ndp->nfsdl_change = nfsva.na_filerev; 455 ndp->nfsdl_modtime = nfsva.na_mtime; 456 ndp->nfsdl_flags |= NFSCLDL_MODTIMESET; 457 } 458 if (!reclaim && (rflags & NFSV4OPEN_RESULTCONFIRM)) { 459 do { 460 ret = nfsrpc_openconfirm(vp, newfhp, newfhlen, op, 461 cred, p); 462 if (ret == NFSERR_DELAY) 463 (void) nfs_catnap(PZERO, ret, "nfs_open"); 464 } while (ret == NFSERR_DELAY); 465 error = ret; 466 } 467 if ((rflags & NFSV4OPEN_LOCKTYPEPOSIX) || 468 nfscl_assumeposixlocks) 469 op->nfso_posixlock = 1; 470 else 471 op->nfso_posixlock = 0; 472 473 /* 474 * If the server is handing out delegations, but we didn't 475 * get one because an OpenConfirm was required, try the 476 * Open again, to get a delegation. This is a harmless no-op, 477 * from a server's point of view. 478 */ 479 if (!reclaim && (rflags & NFSV4OPEN_RESULTCONFIRM) && 480 (op->nfso_own->nfsow_clp->nfsc_flags & NFSCLFLAGS_GOTDELEG) 481 && !error && dp == NULL && ndp == NULL && !recursed) { 482 do { 483 ret = nfsrpc_openrpc(nmp, vp, nfhp, fhlen, newfhp, 484 newfhlen, mode, op, name, namelen, &ndp, 0, 0x0, 485 cred, p, syscred, 1); 486 if (ret == NFSERR_DELAY) 487 (void) nfs_catnap(PZERO, ret, "nfs_open2"); 488 } while (ret == NFSERR_DELAY); 489 if (ret) { 490 if (ndp != NULL) 491 FREE((caddr_t)ndp, M_NFSCLDELEG); 492 if (ret == NFSERR_STALECLIENTID || 493 ret == NFSERR_STALEDONTRECOVER) 494 error = ret; 495 } 496 } 497 } 498 if (nd->nd_repstat != 0 && error == 0) 499 error = nd->nd_repstat; 500 if (error == NFSERR_STALECLIENTID) 501 nfscl_initiate_recovery(op->nfso_own->nfsow_clp); 502nfsmout: 503 if (!error) 504 *dpp = ndp; 505 else if (ndp != NULL) 506 FREE((caddr_t)ndp, M_NFSCLDELEG); 507 mbuf_freem(nd->nd_mrep); 508 return (error); 509} 510 511/* 512 * open downgrade rpc 513 */ 514APPLESTATIC int 515nfsrpc_opendowngrade(vnode_t vp, u_int32_t mode, struct nfsclopen *op, 516 struct ucred *cred, NFSPROC_T *p) 517{ 518 u_int32_t *tl; 519 struct nfsrv_descript nfsd, *nd = &nfsd; 520 int error; 521 522 NFSCL_REQSTART(nd, NFSPROC_OPENDOWNGRADE, vp); 523 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID + 3 * NFSX_UNSIGNED); 524 *tl++ = op->nfso_stateid.seqid; 525 *tl++ = op->nfso_stateid.other[0]; 526 *tl++ = op->nfso_stateid.other[1]; 527 *tl++ = op->nfso_stateid.other[2]; 528 *tl++ = txdr_unsigned(op->nfso_own->nfsow_seqid); 529 *tl++ = txdr_unsigned(mode & NFSV4OPEN_ACCESSBOTH); 530 *tl = txdr_unsigned((mode >> NFSLCK_SHIFT) & NFSV4OPEN_DENYBOTH); 531 error = nfscl_request(nd, vp, p, cred, NULL); 532 if (error) 533 return (error); 534 NFSCL_INCRSEQID(op->nfso_own->nfsow_seqid, nd); 535 if (!nd->nd_repstat) { 536 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID); 537 op->nfso_stateid.seqid = *tl++; 538 op->nfso_stateid.other[0] = *tl++; 539 op->nfso_stateid.other[1] = *tl++; 540 op->nfso_stateid.other[2] = *tl; 541 } 542 if (nd->nd_repstat && error == 0) 543 error = nd->nd_repstat; 544 if (error == NFSERR_STALESTATEID) 545 nfscl_initiate_recovery(op->nfso_own->nfsow_clp); 546nfsmout: 547 mbuf_freem(nd->nd_mrep); 548 return (error); 549} 550 551/* 552 * V4 Close operation. 553 */ 554APPLESTATIC int 555nfsrpc_close(vnode_t vp, int doclose, NFSPROC_T *p) 556{ 557 struct nfsclclient *clp; 558 int error; 559 560 if (vnode_vtype(vp) != VREG) 561 return (0); 562 if (doclose) 563 error = nfscl_doclose(vp, &clp, p); 564 else 565 error = nfscl_getclose(vp, &clp); 566 if (error) 567 return (error); 568 569 nfscl_clientrelease(clp); 570 return (0); 571} 572 573/* 574 * Close the open. 575 */ 576APPLESTATIC void 577nfsrpc_doclose(struct nfsmount *nmp, struct nfsclopen *op, NFSPROC_T *p) 578{ 579 struct nfsrv_descript nfsd, *nd = &nfsd; 580 struct nfscllockowner *lp; 581 struct nfscllock *lop, *nlop; 582 struct ucred *tcred; 583 u_int64_t off = 0, len = 0; 584 u_int32_t type = NFSV4LOCKT_READ; 585 int error, do_unlock, trycnt; 586 587 tcred = newnfs_getcred(); 588 newnfs_copycred(&op->nfso_cred, tcred); 589 /* 590 * (Theoretically this could be done in the same 591 * compound as the close, but having multiple 592 * sequenced Ops in the same compound might be 593 * too scary for some servers.) 594 */ 595 if (op->nfso_posixlock) { 596 off = 0; 597 len = NFS64BITSSET; 598 type = NFSV4LOCKT_READ; 599 } 600 601 /* 602 * Since this function is only called from VOP_INACTIVE(), no 603 * other thread will be manipulating this Open. As such, the 604 * lock lists are not being changed by other threads, so it should 605 * be safe to do this without locking. 606 */ 607 LIST_FOREACH(lp, &op->nfso_lock, nfsl_list) { 608 do_unlock = 1; 609 LIST_FOREACH_SAFE(lop, &lp->nfsl_lock, nfslo_list, nlop) { 610 if (op->nfso_posixlock == 0) { 611 off = lop->nfslo_first; 612 len = lop->nfslo_end - lop->nfslo_first; 613 if (lop->nfslo_type == F_WRLCK) 614 type = NFSV4LOCKT_WRITE; 615 else 616 type = NFSV4LOCKT_READ; 617 } 618 if (do_unlock) { 619 trycnt = 0; 620 do { 621 error = nfsrpc_locku(nd, nmp, lp, off, 622 len, type, tcred, p, 0); 623 if ((nd->nd_repstat == NFSERR_GRACE || 624 nd->nd_repstat == NFSERR_DELAY) && 625 error == 0) 626 (void) nfs_catnap(PZERO, 627 (int)nd->nd_repstat, 628 "nfs_close"); 629 } while ((nd->nd_repstat == NFSERR_GRACE || 630 nd->nd_repstat == NFSERR_DELAY) && 631 error == 0 && trycnt++ < 5); 632 if (op->nfso_posixlock) 633 do_unlock = 0; 634 } 635 nfscl_freelock(lop, 0); 636 } 637 } 638 639 /* 640 * There could be other Opens for different files on the same 641 * OpenOwner, so locking is required. 642 */ 643 NFSLOCKCLSTATE(); 644 nfscl_lockexcl(&op->nfso_own->nfsow_rwlock, NFSCLSTATEMUTEXPTR); 645 NFSUNLOCKCLSTATE(); 646 do { 647 error = nfscl_tryclose(op, tcred, nmp, p); 648 if (error == NFSERR_GRACE) 649 (void) nfs_catnap(PZERO, error, "nfs_close"); 650 } while (error == NFSERR_GRACE); 651 NFSLOCKCLSTATE(); 652 nfscl_lockunlock(&op->nfso_own->nfsow_rwlock); 653 654 /* 655 * Move the lockowner to nfsc_defunctlockowner, 656 * so the Renew thread will do the ReleaseLockOwner 657 * Op on it later. There might still be other 658 * opens using the same lockowner name. 659 */ 660 lp = LIST_FIRST(&op->nfso_lock); 661 if (lp != NULL) { 662 while (LIST_NEXT(lp, nfsl_list) != NULL) 663 lp = LIST_NEXT(lp, nfsl_list); 664 LIST_PREPEND(&nmp->nm_clp->nfsc_defunctlockowner, 665 &op->nfso_lock, lp, nfsl_list); 666 LIST_INIT(&op->nfso_lock); 667 } 668 nfscl_freeopen(op, 0); 669 NFSUNLOCKCLSTATE(); 670 NFSFREECRED(tcred); 671} 672 673/* 674 * The actual Close RPC. 675 */ 676APPLESTATIC int 677nfsrpc_closerpc(struct nfsrv_descript *nd, struct nfsmount *nmp, 678 struct nfsclopen *op, struct ucred *cred, NFSPROC_T *p, 679 int syscred) 680{ 681 u_int32_t *tl; 682 int error; 683 684 nfscl_reqstart(nd, NFSPROC_CLOSE, nmp, op->nfso_fh, 685 op->nfso_fhlen, NULL); 686 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED + NFSX_STATEID); 687 *tl++ = txdr_unsigned(op->nfso_own->nfsow_seqid); 688 *tl++ = op->nfso_stateid.seqid; 689 *tl++ = op->nfso_stateid.other[0]; 690 *tl++ = op->nfso_stateid.other[1]; 691 *tl = op->nfso_stateid.other[2]; 692 if (syscred) 693 nd->nd_flag |= ND_USEGSSNAME; 694 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 695 NFS_PROG, NFS_VER4, NULL, 1, NULL); 696 if (error) 697 return (error); 698 NFSCL_INCRSEQID(op->nfso_own->nfsow_seqid, nd); 699 if (nd->nd_repstat == 0) 700 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID); 701 error = nd->nd_repstat; 702 if (error == NFSERR_STALESTATEID) 703 nfscl_initiate_recovery(op->nfso_own->nfsow_clp); 704nfsmout: 705 mbuf_freem(nd->nd_mrep); 706 return (error); 707} 708 709/* 710 * V4 Open Confirm RPC. 711 */ 712APPLESTATIC int 713nfsrpc_openconfirm(vnode_t vp, u_int8_t *nfhp, int fhlen, 714 struct nfsclopen *op, struct ucred *cred, NFSPROC_T *p) 715{ 716 u_int32_t *tl; 717 struct nfsrv_descript nfsd, *nd = &nfsd; 718 int error; 719 720 nfscl_reqstart(nd, NFSPROC_OPENCONFIRM, VFSTONFS(vnode_mount(vp)), 721 nfhp, fhlen, NULL); 722 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED + NFSX_STATEID); 723 *tl++ = op->nfso_stateid.seqid; 724 *tl++ = op->nfso_stateid.other[0]; 725 *tl++ = op->nfso_stateid.other[1]; 726 *tl++ = op->nfso_stateid.other[2]; 727 *tl = txdr_unsigned(op->nfso_own->nfsow_seqid); 728 error = nfscl_request(nd, vp, p, cred, NULL); 729 if (error) 730 return (error); 731 NFSCL_INCRSEQID(op->nfso_own->nfsow_seqid, nd); 732 if (!nd->nd_repstat) { 733 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID); 734 op->nfso_stateid.seqid = *tl++; 735 op->nfso_stateid.other[0] = *tl++; 736 op->nfso_stateid.other[1] = *tl++; 737 op->nfso_stateid.other[2] = *tl; 738 } 739 error = nd->nd_repstat; 740 if (error == NFSERR_STALESTATEID) 741 nfscl_initiate_recovery(op->nfso_own->nfsow_clp); 742nfsmout: 743 mbuf_freem(nd->nd_mrep); 744 return (error); 745} 746 747/* 748 * Do the setclientid and setclientid confirm RPCs. Called from nfs_statfs() 749 * when a mount has just occurred and when the server replies NFSERR_EXPIRED. 750 */ 751APPLESTATIC int 752nfsrpc_setclient(struct nfsmount *nmp, struct nfsclclient *clp, 753 struct ucred *cred, NFSPROC_T *p) 754{ 755 u_int32_t *tl; 756 struct nfsrv_descript nfsd; 757 struct nfsrv_descript *nd = &nfsd; 758 nfsattrbit_t attrbits; 759 u_int8_t *cp = NULL, *cp2, addr[INET6_ADDRSTRLEN + 9]; 760 u_short port; 761 int error, isinet6 = 0, callblen; 762 nfsquad_t confirm; 763 u_int32_t lease; 764 static u_int32_t rev = 0; 765 766 if (nfsboottime.tv_sec == 0) 767 NFSSETBOOTTIME(nfsboottime); 768 nfscl_reqstart(nd, NFSPROC_SETCLIENTID, nmp, NULL, 0, NULL); 769 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 770 *tl++ = txdr_unsigned(nfsboottime.tv_sec); 771 *tl = txdr_unsigned(rev++); 772 (void) nfsm_strtom(nd, clp->nfsc_id, clp->nfsc_idlen); 773 774 /* 775 * set up the callback address 776 */ 777 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 778 *tl = txdr_unsigned(NFS_CALLBCKPROG); 779 callblen = strlen(nfsv4_callbackaddr); 780 if (callblen == 0) 781 cp = nfscl_getmyip(nmp, &isinet6); 782 if (nfscl_enablecallb && nfs_numnfscbd > 0 && 783 (callblen > 0 || cp != NULL)) { 784 port = htons(nfsv4_cbport); 785 cp2 = (u_int8_t *)&port; 786#ifdef INET6 787 if ((callblen > 0 && 788 strchr(nfsv4_callbackaddr, ':')) || isinet6) { 789 char ip6buf[INET6_ADDRSTRLEN], *ip6add; 790 791 (void) nfsm_strtom(nd, "tcp6", 4); 792 if (callblen == 0) { 793 ip6_sprintf(ip6buf, (struct in6_addr *)cp); 794 ip6add = ip6buf; 795 } else { 796 ip6add = nfsv4_callbackaddr; 797 } 798 snprintf(addr, INET6_ADDRSTRLEN + 9, "%s.%d.%d", 799 ip6add, cp2[0], cp2[1]); 800 } else 801#endif 802 { 803 (void) nfsm_strtom(nd, "tcp", 3); 804 if (callblen == 0) 805 snprintf(addr, INET6_ADDRSTRLEN + 9, 806 "%d.%d.%d.%d.%d.%d", cp[0], cp[1], 807 cp[2], cp[3], cp2[0], cp2[1]); 808 else 809 snprintf(addr, INET6_ADDRSTRLEN + 9, 810 "%s.%d.%d", nfsv4_callbackaddr, 811 cp2[0], cp2[1]); 812 } 813 (void) nfsm_strtom(nd, addr, strlen(addr)); 814 } else { 815 (void) nfsm_strtom(nd, "tcp", 3); 816 (void) nfsm_strtom(nd, "0.0.0.0.0.0", 11); 817 } 818 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 819 *tl = txdr_unsigned(clp->nfsc_cbident); 820 nd->nd_flag |= ND_USEGSSNAME; 821 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 822 NFS_PROG, NFS_VER4, NULL, 1, NULL); 823 if (error) 824 return (error); 825 if (nd->nd_repstat == 0) { 826 NFSM_DISSECT(tl, u_int32_t *, 4 * NFSX_UNSIGNED); 827 clp->nfsc_clientid.lval[0] = *tl++; 828 clp->nfsc_clientid.lval[1] = *tl++; 829 confirm.lval[0] = *tl++; 830 confirm.lval[1] = *tl; 831 mbuf_freem(nd->nd_mrep); 832 nd->nd_mrep = NULL; 833 834 /* 835 * and confirm it. 836 */ 837 nfscl_reqstart(nd, NFSPROC_SETCLIENTIDCFRM, nmp, NULL, 0, NULL); 838 NFSM_BUILD(tl, u_int32_t *, 4 * NFSX_UNSIGNED); 839 *tl++ = clp->nfsc_clientid.lval[0]; 840 *tl++ = clp->nfsc_clientid.lval[1]; 841 *tl++ = confirm.lval[0]; 842 *tl = confirm.lval[1]; 843 nd->nd_flag |= ND_USEGSSNAME; 844 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, 845 cred, NFS_PROG, NFS_VER4, NULL, 1, NULL); 846 if (error) 847 return (error); 848 mbuf_freem(nd->nd_mrep); 849 nd->nd_mrep = NULL; 850 if (nd->nd_repstat == 0) { 851 nfscl_reqstart(nd, NFSPROC_GETATTR, nmp, nmp->nm_fh, 852 nmp->nm_fhsize, NULL); 853 NFSZERO_ATTRBIT(&attrbits); 854 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_LEASETIME); 855 (void) nfsrv_putattrbit(nd, &attrbits); 856 nd->nd_flag |= ND_USEGSSNAME; 857 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, 858 cred, NFS_PROG, NFS_VER4, NULL, 1, NULL); 859 if (error) 860 return (error); 861 if (nd->nd_repstat == 0) { 862 error = nfsv4_loadattr(nd, NULL, NULL, NULL, NULL, 0, NULL, 863 NULL, NULL, NULL, NULL, 0, NULL, &lease, NULL, p, cred); 864 if (error) 865 goto nfsmout; 866 clp->nfsc_renew = NFSCL_RENEW(lease); 867 clp->nfsc_expire = NFSD_MONOSEC + clp->nfsc_renew; 868 clp->nfsc_clientidrev++; 869 if (clp->nfsc_clientidrev == 0) 870 clp->nfsc_clientidrev++; 871 } 872 } 873 } 874 error = nd->nd_repstat; 875nfsmout: 876 mbuf_freem(nd->nd_mrep); 877 return (error); 878} 879 880/* 881 * nfs getattr call. 882 */ 883APPLESTATIC int 884nfsrpc_getattr(vnode_t vp, struct ucred *cred, NFSPROC_T *p, 885 struct nfsvattr *nap, void *stuff) 886{ 887 struct nfsrv_descript nfsd, *nd = &nfsd; 888 int error; 889 nfsattrbit_t attrbits; 890 891 NFSCL_REQSTART(nd, NFSPROC_GETATTR, vp); 892 if (nd->nd_flag & ND_NFSV4) { 893 NFSGETATTR_ATTRBIT(&attrbits); 894 (void) nfsrv_putattrbit(nd, &attrbits); 895 } 896 error = nfscl_request(nd, vp, p, cred, stuff); 897 if (error) 898 return (error); 899 if (!nd->nd_repstat) 900 error = nfsm_loadattr(nd, nap); 901 else 902 error = nd->nd_repstat; 903 mbuf_freem(nd->nd_mrep); 904 return (error); 905} 906 907/* 908 * nfs getattr call with non-vnode arguemnts. 909 */ 910APPLESTATIC int 911nfsrpc_getattrnovp(struct nfsmount *nmp, u_int8_t *fhp, int fhlen, int syscred, 912 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, u_int64_t *xidp) 913{ 914 struct nfsrv_descript nfsd, *nd = &nfsd; 915 int error, vers = NFS_VER2; 916 nfsattrbit_t attrbits; 917 918 nfscl_reqstart(nd, NFSPROC_GETATTR, nmp, fhp, fhlen, NULL); 919 if (nd->nd_flag & ND_NFSV4) { 920 vers = NFS_VER4; 921 NFSGETATTR_ATTRBIT(&attrbits); 922 (void) nfsrv_putattrbit(nd, &attrbits); 923 } else if (nd->nd_flag & ND_NFSV3) { 924 vers = NFS_VER3; 925 } 926 if (syscred) 927 nd->nd_flag |= ND_USEGSSNAME; 928 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 929 NFS_PROG, vers, NULL, 1, xidp); 930 if (error) 931 return (error); 932 if (!nd->nd_repstat) 933 error = nfsm_loadattr(nd, nap); 934 else 935 error = nd->nd_repstat; 936 mbuf_freem(nd->nd_mrep); 937 return (error); 938} 939 940/* 941 * Do an nfs setattr operation. 942 */ 943APPLESTATIC int 944nfsrpc_setattr(vnode_t vp, struct vattr *vap, NFSACL_T *aclp, 945 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *rnap, int *attrflagp, 946 void *stuff) 947{ 948 int error, expireret = 0, openerr, retrycnt; 949 u_int32_t clidrev = 0, mode; 950 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 951 struct nfsfh *nfhp; 952 nfsv4stateid_t stateid; 953 void *lckp; 954 955 if (nmp->nm_clp != NULL) 956 clidrev = nmp->nm_clp->nfsc_clientidrev; 957 if (vap != NULL && NFSATTRISSET(u_quad_t, vap, va_size)) 958 mode = NFSV4OPEN_ACCESSWRITE; 959 else 960 mode = NFSV4OPEN_ACCESSREAD; 961 retrycnt = 0; 962 do { 963 lckp = NULL; 964 openerr = 1; 965 if (NFSHASNFSV4(nmp)) { 966 nfhp = VTONFS(vp)->n_fhp; 967 error = nfscl_getstateid(vp, nfhp->nfh_fh, 968 nfhp->nfh_len, mode, cred, p, &stateid, &lckp); 969 if (error && vnode_vtype(vp) == VREG && 970 (mode == NFSV4OPEN_ACCESSWRITE || 971 nfstest_openallsetattr)) { 972 /* 973 * No Open stateid, so try and open the file 974 * now. 975 */ 976 if (mode == NFSV4OPEN_ACCESSWRITE) 977 openerr = nfsrpc_open(vp, FWRITE, cred, 978 p); 979 else 980 openerr = nfsrpc_open(vp, FREAD, cred, 981 p); 982 if (!openerr) 983 (void) nfscl_getstateid(vp, 984 nfhp->nfh_fh, nfhp->nfh_len, 985 mode, cred, p, &stateid, &lckp); 986 } 987 } 988 if (vap != NULL) 989 error = nfsrpc_setattrrpc(vp, vap, &stateid, cred, p, 990 rnap, attrflagp, stuff); 991 else 992 error = nfsrpc_setaclrpc(vp, cred, p, aclp, &stateid, 993 stuff); 994 if (error == NFSERR_STALESTATEID) 995 nfscl_initiate_recovery(nmp->nm_clp); 996 if (lckp != NULL) 997 nfscl_lockderef(lckp); 998 if (!openerr) 999 (void) nfsrpc_close(vp, 0, p); 1000 if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 1001 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 1002 error == NFSERR_OLDSTATEID) { 1003 (void) nfs_catnap(PZERO, error, "nfs_setattr"); 1004 } else if ((error == NFSERR_EXPIRED || 1005 error == NFSERR_BADSTATEID) && clidrev != 0) { 1006 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p); 1007 } 1008 retrycnt++; 1009 } while (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 1010 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 1011 (error == NFSERR_OLDSTATEID && retrycnt < 20) || 1012 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) && 1013 expireret == 0 && clidrev != 0 && retrycnt < 4)); 1014 if (error && retrycnt >= 4) 1015 error = EIO; 1016 return (error); 1017} 1018 1019static int 1020nfsrpc_setattrrpc(vnode_t vp, struct vattr *vap, 1021 nfsv4stateid_t *stateidp, struct ucred *cred, NFSPROC_T *p, 1022 struct nfsvattr *rnap, int *attrflagp, void *stuff) 1023{ 1024 u_int32_t *tl; 1025 struct nfsrv_descript nfsd, *nd = &nfsd; 1026 int error; 1027 nfsattrbit_t attrbits; 1028 1029 *attrflagp = 0; 1030 NFSCL_REQSTART(nd, NFSPROC_SETATTR, vp); 1031 if (nd->nd_flag & ND_NFSV4) 1032 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID); 1033 vap->va_type = vnode_vtype(vp); 1034 nfscl_fillsattr(nd, vap, vp, NFSSATTR_FULL, 0); 1035 if (nd->nd_flag & ND_NFSV3) { 1036 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1037 *tl = newnfs_false; 1038 } else if (nd->nd_flag & ND_NFSV4) { 1039 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1040 *tl = txdr_unsigned(NFSV4OP_GETATTR); 1041 NFSGETATTR_ATTRBIT(&attrbits); 1042 (void) nfsrv_putattrbit(nd, &attrbits); 1043 } 1044 error = nfscl_request(nd, vp, p, cred, stuff); 1045 if (error) 1046 return (error); 1047 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) 1048 error = nfscl_wcc_data(nd, vp, rnap, attrflagp, NULL, stuff); 1049 if ((nd->nd_flag & ND_NFSV4) && !error) 1050 error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL); 1051 if (!(nd->nd_flag & ND_NFSV3) && !nd->nd_repstat && !error) 1052 error = nfscl_postop_attr(nd, rnap, attrflagp, stuff); 1053 mbuf_freem(nd->nd_mrep); 1054 if (nd->nd_repstat && !error) 1055 error = nd->nd_repstat; 1056 return (error); 1057} 1058 1059/* 1060 * nfs lookup rpc 1061 */ 1062APPLESTATIC int 1063nfsrpc_lookup(vnode_t dvp, char *name, int len, struct ucred *cred, 1064 NFSPROC_T *p, struct nfsvattr *dnap, struct nfsvattr *nap, 1065 struct nfsfh **nfhpp, int *attrflagp, int *dattrflagp, void *stuff) 1066{ 1067 u_int32_t *tl; 1068 struct nfsrv_descript nfsd, *nd = &nfsd; 1069 struct nfsmount *nmp; 1070 struct nfsnode *np; 1071 struct nfsfh *nfhp; 1072 nfsattrbit_t attrbits; 1073 int error = 0, lookupp = 0; 1074 1075 *attrflagp = 0; 1076 *dattrflagp = 0; 1077 if (vnode_vtype(dvp) != VDIR) 1078 return (ENOTDIR); 1079 nmp = VFSTONFS(vnode_mount(dvp)); 1080 if (len > NFS_MAXNAMLEN) 1081 return (ENAMETOOLONG); 1082 if (NFSHASNFSV4(nmp) && len == 1 && 1083 name[0] == '.') { 1084 /* 1085 * Just return the current dir's fh. 1086 */ 1087 np = VTONFS(dvp); 1088 MALLOC(nfhp, struct nfsfh *, sizeof (struct nfsfh) + 1089 np->n_fhp->nfh_len, M_NFSFH, M_WAITOK); 1090 nfhp->nfh_len = np->n_fhp->nfh_len; 1091 NFSBCOPY(np->n_fhp->nfh_fh, nfhp->nfh_fh, nfhp->nfh_len); 1092 *nfhpp = nfhp; 1093 return (0); 1094 } 1095 if (NFSHASNFSV4(nmp) && len == 2 && 1096 name[0] == '.' && name[1] == '.') { 1097 lookupp = 1; 1098 NFSCL_REQSTART(nd, NFSPROC_LOOKUPP, dvp); 1099 } else { 1100 NFSCL_REQSTART(nd, NFSPROC_LOOKUP, dvp); 1101 (void) nfsm_strtom(nd, name, len); 1102 } 1103 if (nd->nd_flag & ND_NFSV4) { 1104 NFSGETATTR_ATTRBIT(&attrbits); 1105 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1106 *tl++ = txdr_unsigned(NFSV4OP_GETFH); 1107 *tl = txdr_unsigned(NFSV4OP_GETATTR); 1108 (void) nfsrv_putattrbit(nd, &attrbits); 1109 } 1110 error = nfscl_request(nd, dvp, p, cred, stuff); 1111 if (error) 1112 return (error); 1113 if (nd->nd_repstat) { 1114 /* 1115 * When an NFSv4 Lookupp returns ENOENT, it means that 1116 * the lookup is at the root of an fs, so return this dir. 1117 */ 1118 if (nd->nd_repstat == NFSERR_NOENT && lookupp) { 1119 np = VTONFS(dvp); 1120 MALLOC(nfhp, struct nfsfh *, sizeof (struct nfsfh) + 1121 np->n_fhp->nfh_len, M_NFSFH, M_WAITOK); 1122 nfhp->nfh_len = np->n_fhp->nfh_len; 1123 NFSBCOPY(np->n_fhp->nfh_fh, nfhp->nfh_fh, nfhp->nfh_len); 1124 *nfhpp = nfhp; 1125 mbuf_freem(nd->nd_mrep); 1126 return (0); 1127 } 1128 if (nd->nd_flag & ND_NFSV3) 1129 error = nfscl_postop_attr(nd, dnap, dattrflagp, stuff); 1130 goto nfsmout; 1131 } 1132 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == ND_NFSV4) { 1133 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1134 if (*(tl + 1)) { 1135 nd->nd_flag |= ND_NOMOREDATA; 1136 goto nfsmout; 1137 } 1138 } 1139 error = nfsm_getfh(nd, nfhpp); 1140 if (error) 1141 goto nfsmout; 1142 1143 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 1144 if ((nd->nd_flag & ND_NFSV3) && !error) 1145 error = nfscl_postop_attr(nd, dnap, dattrflagp, stuff); 1146nfsmout: 1147 mbuf_freem(nd->nd_mrep); 1148 if (!error && nd->nd_repstat) 1149 error = nd->nd_repstat; 1150 return (error); 1151} 1152 1153/* 1154 * Do a readlink rpc. 1155 */ 1156APPLESTATIC int 1157nfsrpc_readlink(vnode_t vp, struct uio *uiop, struct ucred *cred, 1158 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff) 1159{ 1160 u_int32_t *tl; 1161 struct nfsrv_descript nfsd, *nd = &nfsd; 1162 struct nfsnode *np = VTONFS(vp); 1163 nfsattrbit_t attrbits; 1164 int error, len, cangetattr = 1; 1165 1166 *attrflagp = 0; 1167 NFSCL_REQSTART(nd, NFSPROC_READLINK, vp); 1168 if (nd->nd_flag & ND_NFSV4) { 1169 /* 1170 * And do a Getattr op. 1171 */ 1172 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1173 *tl = txdr_unsigned(NFSV4OP_GETATTR); 1174 NFSGETATTR_ATTRBIT(&attrbits); 1175 (void) nfsrv_putattrbit(nd, &attrbits); 1176 } 1177 error = nfscl_request(nd, vp, p, cred, stuff); 1178 if (error) 1179 return (error); 1180 if (nd->nd_flag & ND_NFSV3) 1181 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 1182 if (!nd->nd_repstat && !error) { 1183 NFSM_STRSIZ(len, NFS_MAXPATHLEN); 1184 /* 1185 * This seems weird to me, but must have been added to 1186 * FreeBSD for some reason. The only thing I can think of 1187 * is that there was/is some server that replies with 1188 * more link data than it should? 1189 */ 1190 if (len == NFS_MAXPATHLEN) { 1191 NFSLOCKNODE(np); 1192 if (np->n_size > 0 && np->n_size < NFS_MAXPATHLEN) { 1193 len = np->n_size; 1194 cangetattr = 0; 1195 } 1196 NFSUNLOCKNODE(np); 1197 } 1198 error = nfsm_mbufuio(nd, uiop, len); 1199 if ((nd->nd_flag & ND_NFSV4) && !error && cangetattr) 1200 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 1201 } 1202 if (nd->nd_repstat && !error) 1203 error = nd->nd_repstat; 1204nfsmout: 1205 mbuf_freem(nd->nd_mrep); 1206 return (error); 1207} 1208 1209/* 1210 * Read operation. 1211 */ 1212APPLESTATIC int 1213nfsrpc_read(vnode_t vp, struct uio *uiop, struct ucred *cred, 1214 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff) 1215{ 1216 int error, expireret = 0, retrycnt; 1217 u_int32_t clidrev = 0; 1218 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 1219 struct nfsnode *np = VTONFS(vp); 1220 struct ucred *newcred; 1221 struct nfsfh *nfhp = NULL; 1222 nfsv4stateid_t stateid; 1223 void *lckp; 1224 1225 if (nmp->nm_clp != NULL) 1226 clidrev = nmp->nm_clp->nfsc_clientidrev; 1227 newcred = cred; 1228 if (NFSHASNFSV4(nmp)) { 1229 nfhp = np->n_fhp; 1230 if (p == NULL) 1231 newcred = NFSNEWCRED(cred); 1232 } 1233 retrycnt = 0; 1234 do { 1235 lckp = NULL; 1236 if (NFSHASNFSV4(nmp)) 1237 (void)nfscl_getstateid(vp, nfhp->nfh_fh, nfhp->nfh_len, 1238 NFSV4OPEN_ACCESSREAD, newcred, p, &stateid, &lckp); 1239 error = nfsrpc_readrpc(vp, uiop, newcred, &stateid, p, nap, 1240 attrflagp, stuff); 1241 if (error == NFSERR_STALESTATEID) 1242 nfscl_initiate_recovery(nmp->nm_clp); 1243 if (lckp != NULL) 1244 nfscl_lockderef(lckp); 1245 if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 1246 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 1247 error == NFSERR_OLDSTATEID) { 1248 (void) nfs_catnap(PZERO, error, "nfs_read"); 1249 } else if ((error == NFSERR_EXPIRED || 1250 error == NFSERR_BADSTATEID) && clidrev != 0) { 1251 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p); 1252 } 1253 retrycnt++; 1254 } while (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 1255 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 1256 (error == NFSERR_OLDSTATEID && retrycnt < 20) || 1257 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) && 1258 expireret == 0 && clidrev != 0 && retrycnt < 4)); 1259 if (error && retrycnt >= 4) 1260 error = EIO; 1261 if (NFSHASNFSV4(nmp) && p == NULL) 1262 NFSFREECRED(newcred); 1263 return (error); 1264} 1265 1266/* 1267 * The actual read RPC. 1268 */ 1269static int 1270nfsrpc_readrpc(vnode_t vp, struct uio *uiop, struct ucred *cred, 1271 nfsv4stateid_t *stateidp, NFSPROC_T *p, struct nfsvattr *nap, 1272 int *attrflagp, void *stuff) 1273{ 1274 u_int32_t *tl; 1275 int error = 0, len, retlen, tsiz, eof = 0; 1276 struct nfsrv_descript nfsd; 1277 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 1278 struct nfsrv_descript *nd = &nfsd; 1279 1280 *attrflagp = 0; 1281 tsiz = uio_uio_resid(uiop); 1282 if (uiop->uio_offset + tsiz > 0xffffffff && 1283 !NFSHASNFSV3OR4(nmp)) 1284 return (EFBIG); 1285 nd->nd_mrep = NULL; 1286 while (tsiz > 0) { 1287 *attrflagp = 0; 1288 len = (tsiz > nmp->nm_rsize) ? nmp->nm_rsize : tsiz; 1289 NFSCL_REQSTART(nd, NFSPROC_READ, vp); 1290 if (nd->nd_flag & ND_NFSV4) 1291 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID); 1292 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED * 3); 1293 if (nd->nd_flag & ND_NFSV2) { 1294 *tl++ = txdr_unsigned(uiop->uio_offset); 1295 *tl++ = txdr_unsigned(len); 1296 *tl = 0; 1297 } else { 1298 txdr_hyper(uiop->uio_offset, tl); 1299 *(tl + 2) = txdr_unsigned(len); 1300 } 1301 /* 1302 * Since I can't do a Getattr for NFSv4 for Write, there 1303 * doesn't seem any point in doing one here, either. 1304 * (See the comment in nfsrpc_writerpc() for more info.) 1305 */ 1306 error = nfscl_request(nd, vp, p, cred, stuff); 1307 if (error) 1308 return (error); 1309 if (nd->nd_flag & ND_NFSV3) { 1310 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 1311 } else if (!nd->nd_repstat && (nd->nd_flag & ND_NFSV2)) { 1312 error = nfsm_loadattr(nd, nap); 1313 if (!error) 1314 *attrflagp = 1; 1315 } 1316 if (nd->nd_repstat || error) { 1317 if (!error) 1318 error = nd->nd_repstat; 1319 goto nfsmout; 1320 } 1321 if (nd->nd_flag & ND_NFSV3) { 1322 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1323 eof = fxdr_unsigned(int, *(tl + 1)); 1324 } else if (nd->nd_flag & ND_NFSV4) { 1325 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 1326 eof = fxdr_unsigned(int, *tl); 1327 } 1328 NFSM_STRSIZ(retlen, nmp->nm_rsize); 1329 error = nfsm_mbufuio(nd, uiop, retlen); 1330 if (error) 1331 goto nfsmout; 1332 mbuf_freem(nd->nd_mrep); 1333 nd->nd_mrep = NULL; 1334 tsiz -= retlen; 1335 if (!(nd->nd_flag & ND_NFSV2)) { 1336 if (eof || retlen == 0) 1337 tsiz = 0; 1338 } else if (retlen < len) 1339 tsiz = 0; 1340 } 1341 return (0); 1342nfsmout: 1343 if (nd->nd_mrep != NULL) 1344 mbuf_freem(nd->nd_mrep); 1345 return (error); 1346} 1347 1348/* 1349 * nfs write operation 1350 * When called_from_strategy != 0, it should return EIO for an error that 1351 * indicates recovery is in progress, so that the buffer will be left 1352 * dirty and be written back to the server later. If it loops around, 1353 * the recovery thread could get stuck waiting for the buffer and recovery 1354 * will then deadlock. 1355 */ 1356APPLESTATIC int 1357nfsrpc_write(vnode_t vp, struct uio *uiop, int *iomode, u_char *verfp, 1358 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, 1359 void *stuff, int called_from_strategy) 1360{ 1361 int error, expireret = 0, retrycnt, nostateid; 1362 u_int32_t clidrev = 0; 1363 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 1364 struct nfsnode *np = VTONFS(vp); 1365 struct ucred *newcred; 1366 struct nfsfh *nfhp = NULL; 1367 nfsv4stateid_t stateid; 1368 void *lckp; 1369 1370 if (nmp->nm_clp != NULL) 1371 clidrev = nmp->nm_clp->nfsc_clientidrev; 1372 newcred = cred; 1373 if (NFSHASNFSV4(nmp)) { 1374 if (p == NULL) 1375 newcred = NFSNEWCRED(cred); 1376 nfhp = np->n_fhp; 1377 } 1378 retrycnt = 0; 1379 do { 1380 lckp = NULL; 1381 nostateid = 0; 1382 if (NFSHASNFSV4(nmp)) { 1383 (void)nfscl_getstateid(vp, nfhp->nfh_fh, nfhp->nfh_len, 1384 NFSV4OPEN_ACCESSWRITE, newcred, p, &stateid, &lckp); 1385 if (stateid.other[0] == 0 && stateid.other[1] == 0 && 1386 stateid.other[2] == 0) { 1387 nostateid = 1; 1388 printf("stateid0 in write\n"); 1389 } 1390 } 1391 1392 /* 1393 * If there is no stateid for NFSv4, it means this is an 1394 * extraneous write after close. Basically a poorly 1395 * implemented buffer cache. Just don't do the write. 1396 */ 1397 if (nostateid) 1398 error = 0; 1399 else 1400 error = nfsrpc_writerpc(vp, uiop, iomode, verfp, 1401 newcred, &stateid, p, nap, attrflagp, stuff); 1402if (error == NFSERR_BADSTATEID) { 1403printf("st=0x%x 0x%x 0x%x\n",stateid.other[0],stateid.other[1],stateid.other[2]); 1404nfscl_dumpstate(nmp, 1, 1, 0, 0); 1405} 1406 if (error == NFSERR_STALESTATEID) 1407 nfscl_initiate_recovery(nmp->nm_clp); 1408 if (lckp != NULL) 1409 nfscl_lockderef(lckp); 1410 if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 1411 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 1412 error == NFSERR_OLDSTATEID) { 1413 (void) nfs_catnap(PZERO, error, "nfs_write"); 1414 } else if ((error == NFSERR_EXPIRED || 1415 error == NFSERR_BADSTATEID) && clidrev != 0) { 1416 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p); 1417 } 1418 retrycnt++; 1419 } while (error == NFSERR_GRACE || error == NFSERR_DELAY || 1420 ((error == NFSERR_STALESTATEID || 1421 error == NFSERR_STALEDONTRECOVER) && called_from_strategy == 0) || 1422 (error == NFSERR_OLDSTATEID && retrycnt < 20) || 1423 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) && 1424 expireret == 0 && clidrev != 0 && retrycnt < 4)); 1425 if (error != 0 && (retrycnt >= 4 || 1426 ((error == NFSERR_STALESTATEID || 1427 error == NFSERR_STALEDONTRECOVER) && called_from_strategy != 0))) 1428 error = EIO; 1429 if (NFSHASNFSV4(nmp) && p == NULL) 1430 NFSFREECRED(newcred); 1431 return (error); 1432} 1433 1434/* 1435 * The actual write RPC. 1436 */ 1437static int 1438nfsrpc_writerpc(vnode_t vp, struct uio *uiop, int *iomode, 1439 u_char *verfp, struct ucred *cred, nfsv4stateid_t *stateidp, 1440 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff) 1441{ 1442 u_int32_t *tl; 1443 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 1444 struct nfsnode *np = VTONFS(vp); 1445 int error = 0, len, tsiz, rlen, commit, committed = NFSWRITE_FILESYNC; 1446 int wccflag = 0, wsize; 1447 int32_t backup; 1448 struct nfsrv_descript nfsd; 1449 struct nfsrv_descript *nd = &nfsd; 1450 nfsattrbit_t attrbits; 1451 1452#ifdef DIAGNOSTIC 1453 if (uiop->uio_iovcnt != 1) 1454 panic("nfs: writerpc iovcnt > 1"); 1455#endif 1456 *attrflagp = 0; 1457 tsiz = uio_uio_resid(uiop); 1458 NFSLOCKMNT(nmp); 1459 if (uiop->uio_offset + tsiz > 0xffffffff && 1460 !NFSHASNFSV3OR4(nmp)) { 1461 NFSUNLOCKMNT(nmp); 1462 return (EFBIG); 1463 } 1464 wsize = nmp->nm_wsize; 1465 NFSUNLOCKMNT(nmp); 1466 nd->nd_mrep = NULL; /* NFSv2 sometimes does a write with */ 1467 nd->nd_repstat = 0; /* uio_resid == 0, so the while is not done */ 1468 while (tsiz > 0) { 1469 nmp = VFSTONFS(vnode_mount(vp)); 1470 if (nmp == NULL) { 1471 error = ENXIO; 1472 goto nfsmout; 1473 } 1474 *attrflagp = 0; 1475 len = (tsiz > wsize) ? wsize : tsiz; 1476 NFSCL_REQSTART(nd, NFSPROC_WRITE, vp); 1477 if (nd->nd_flag & ND_NFSV4) { 1478 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID); 1479 NFSM_BUILD(tl, u_int32_t *, NFSX_HYPER+2*NFSX_UNSIGNED); 1480 txdr_hyper(uiop->uio_offset, tl); 1481 tl += 2; 1482 *tl++ = txdr_unsigned(*iomode); 1483 *tl = txdr_unsigned(len); 1484 } else if (nd->nd_flag & ND_NFSV3) { 1485 NFSM_BUILD(tl, u_int32_t *, NFSX_HYPER+3*NFSX_UNSIGNED); 1486 txdr_hyper(uiop->uio_offset, tl); 1487 tl += 2; 1488 *tl++ = txdr_unsigned(len); 1489 *tl++ = txdr_unsigned(*iomode); 1490 *tl = txdr_unsigned(len); 1491 } else { 1492 u_int32_t x; 1493 1494 NFSM_BUILD(tl, u_int32_t *, 4 * NFSX_UNSIGNED); 1495 /* 1496 * Not sure why someone changed this, since the 1497 * RFC clearly states that "beginoffset" and 1498 * "totalcount" are ignored, but it wouldn't 1499 * surprise me if there's a busted server out there. 1500 */ 1501 /* Set both "begin" and "current" to non-garbage. */ 1502 x = txdr_unsigned((u_int32_t)uiop->uio_offset); 1503 *tl++ = x; /* "begin offset" */ 1504 *tl++ = x; /* "current offset" */ 1505 x = txdr_unsigned(len); 1506 *tl++ = x; /* total to this offset */ 1507 *tl = x; /* size of this write */ 1508 1509 } 1510 nfsm_uiombuf(nd, uiop, len); 1511 /* 1512 * Although it is tempting to do a normal Getattr Op in the 1513 * NFSv4 compound, the result can be a nearly hung client 1514 * system if the Getattr asks for Owner and/or OwnerGroup. 1515 * It occurs when the client can't map either the Owner or 1516 * Owner_group name in the Getattr reply to a uid/gid. When 1517 * there is a cache miss, the kernel does an upcall to the 1518 * nfsuserd. Then, it can try and read the local /etc/passwd 1519 * or /etc/group file. It can then block in getnewbuf(), 1520 * waiting for dirty writes to be pushed to the NFS server. 1521 * The only reason this doesn't result in a complete 1522 * deadlock, is that the upcall times out and allows 1523 * the write to complete. However, progress is so slow 1524 * that it might just as well be deadlocked. 1525 * So, we just get the attributes that change with each 1526 * write Op. 1527 * nb: nfscl_loadattrcache() needs to be told that these 1528 * partial attributes from a write rpc are being 1529 * passed in, via a argument flag. 1530 */ 1531 if (nd->nd_flag & ND_NFSV4) { 1532 NFSWRITEGETATTR_ATTRBIT(&attrbits); 1533 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1534 *tl = txdr_unsigned(NFSV4OP_GETATTR); 1535 (void) nfsrv_putattrbit(nd, &attrbits); 1536 } 1537 error = nfscl_request(nd, vp, p, cred, stuff); 1538 if (error) 1539 return (error); 1540 if (nd->nd_repstat) { 1541 /* 1542 * In case the rpc gets retried, roll 1543 * the uio fileds changed by nfsm_uiombuf() 1544 * back. 1545 */ 1546 uiop->uio_offset -= len; 1547 uio_uio_resid_add(uiop, len); 1548 uio_iov_base_add(uiop, -len); 1549 uio_iov_len_add(uiop, len); 1550 } 1551 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) { 1552 error = nfscl_wcc_data(nd, vp, nap, attrflagp, 1553 &wccflag, stuff); 1554 if (error) 1555 goto nfsmout; 1556 } 1557 if (!nd->nd_repstat) { 1558 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) { 1559 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED 1560 + NFSX_VERF); 1561 rlen = fxdr_unsigned(int, *tl++); 1562 if (rlen == 0) { 1563 error = NFSERR_IO; 1564 goto nfsmout; 1565 } else if (rlen < len) { 1566 backup = len - rlen; 1567 uio_iov_base_add(uiop, -(backup)); 1568 uio_iov_len_add(uiop, backup); 1569 uiop->uio_offset -= backup; 1570 uio_uio_resid_add(uiop, backup); 1571 len = rlen; 1572 } 1573 commit = fxdr_unsigned(int, *tl++); 1574 1575 /* 1576 * Return the lowest committment level 1577 * obtained by any of the RPCs. 1578 */ 1579 if (committed == NFSWRITE_FILESYNC) 1580 committed = commit; 1581 else if (committed == NFSWRITE_DATASYNC && 1582 commit == NFSWRITE_UNSTABLE) 1583 committed = commit; 1584 if (verfp != NULL) 1585 NFSBCOPY((caddr_t)tl, verfp, NFSX_VERF); 1586 NFSLOCKMNT(nmp); 1587 if (!NFSHASWRITEVERF(nmp)) { 1588 NFSBCOPY((caddr_t)tl, 1589 (caddr_t)&nmp->nm_verf[0], 1590 NFSX_VERF); 1591 NFSSETWRITEVERF(nmp); 1592 } 1593 NFSUNLOCKMNT(nmp); 1594 } 1595 if (nd->nd_flag & ND_NFSV4) 1596 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1597 if (nd->nd_flag & (ND_NFSV2 | ND_NFSV4)) { 1598 error = nfsm_loadattr(nd, nap); 1599 if (!error) 1600 *attrflagp = NFS_LATTR_NOSHRINK; 1601 } 1602 } else { 1603 error = nd->nd_repstat; 1604 } 1605 if (error) 1606 goto nfsmout; 1607 NFSWRITERPC_SETTIME(wccflag, np, (nd->nd_flag & ND_NFSV4)); 1608 mbuf_freem(nd->nd_mrep); 1609 nd->nd_mrep = NULL; 1610 tsiz -= len; 1611 } 1612nfsmout: 1613 if (nd->nd_mrep != NULL) 1614 mbuf_freem(nd->nd_mrep); 1615 *iomode = committed; 1616 if (nd->nd_repstat && !error) 1617 error = nd->nd_repstat; 1618 return (error); 1619} 1620 1621/* 1622 * nfs mknod rpc 1623 * For NFS v2 this is a kludge. Use a create rpc but with the IFMT bits of the 1624 * mode set to specify the file type and the size field for rdev. 1625 */ 1626APPLESTATIC int 1627nfsrpc_mknod(vnode_t dvp, char *name, int namelen, struct vattr *vap, 1628 u_int32_t rdev, enum vtype vtyp, struct ucred *cred, NFSPROC_T *p, 1629 struct nfsvattr *dnap, struct nfsvattr *nnap, struct nfsfh **nfhpp, 1630 int *attrflagp, int *dattrflagp, void *dstuff) 1631{ 1632 u_int32_t *tl; 1633 int error = 0; 1634 struct nfsrv_descript nfsd, *nd = &nfsd; 1635 nfsattrbit_t attrbits; 1636 1637 *nfhpp = NULL; 1638 *attrflagp = 0; 1639 *dattrflagp = 0; 1640 if (namelen > NFS_MAXNAMLEN) 1641 return (ENAMETOOLONG); 1642 NFSCL_REQSTART(nd, NFSPROC_MKNOD, dvp); 1643 if (nd->nd_flag & ND_NFSV4) { 1644 if (vtyp == VBLK || vtyp == VCHR) { 1645 NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 1646 *tl++ = vtonfsv34_type(vtyp); 1647 *tl++ = txdr_unsigned(NFSMAJOR(rdev)); 1648 *tl = txdr_unsigned(NFSMINOR(rdev)); 1649 } else { 1650 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1651 *tl = vtonfsv34_type(vtyp); 1652 } 1653 } 1654 (void) nfsm_strtom(nd, name, namelen); 1655 if (nd->nd_flag & ND_NFSV3) { 1656 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1657 *tl = vtonfsv34_type(vtyp); 1658 } 1659 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) 1660 nfscl_fillsattr(nd, vap, dvp, 0, 0); 1661 if ((nd->nd_flag & ND_NFSV3) && 1662 (vtyp == VCHR || vtyp == VBLK)) { 1663 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1664 *tl++ = txdr_unsigned(NFSMAJOR(rdev)); 1665 *tl = txdr_unsigned(NFSMINOR(rdev)); 1666 } 1667 if (nd->nd_flag & ND_NFSV4) { 1668 NFSGETATTR_ATTRBIT(&attrbits); 1669 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1670 *tl++ = txdr_unsigned(NFSV4OP_GETFH); 1671 *tl = txdr_unsigned(NFSV4OP_GETATTR); 1672 (void) nfsrv_putattrbit(nd, &attrbits); 1673 } 1674 if (nd->nd_flag & ND_NFSV2) 1675 nfscl_fillsattr(nd, vap, dvp, NFSSATTR_SIZERDEV, rdev); 1676 error = nfscl_request(nd, dvp, p, cred, dstuff); 1677 if (error) 1678 return (error); 1679 if (nd->nd_flag & ND_NFSV4) 1680 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 1681 if (!nd->nd_repstat) { 1682 if (nd->nd_flag & ND_NFSV4) { 1683 NFSM_DISSECT(tl, u_int32_t *, 5 * NFSX_UNSIGNED); 1684 error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL); 1685 if (error) 1686 goto nfsmout; 1687 } 1688 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp); 1689 if (error) 1690 goto nfsmout; 1691 } 1692 if (nd->nd_flag & ND_NFSV3) 1693 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 1694 if (!error && nd->nd_repstat) 1695 error = nd->nd_repstat; 1696nfsmout: 1697 mbuf_freem(nd->nd_mrep); 1698 return (error); 1699} 1700 1701/* 1702 * nfs file create call 1703 * Mostly just call the approriate routine. (I separated out v4, so that 1704 * error recovery wouldn't be as difficult.) 1705 */ 1706APPLESTATIC int 1707nfsrpc_create(vnode_t dvp, char *name, int namelen, struct vattr *vap, 1708 nfsquad_t cverf, int fmode, struct ucred *cred, NFSPROC_T *p, 1709 struct nfsvattr *dnap, struct nfsvattr *nnap, struct nfsfh **nfhpp, 1710 int *attrflagp, int *dattrflagp, void *dstuff) 1711{ 1712 int error = 0, newone, expireret = 0, retrycnt, unlocked; 1713 struct nfsclowner *owp; 1714 struct nfscldeleg *dp; 1715 struct nfsmount *nmp = VFSTONFS(vnode_mount(dvp)); 1716 u_int32_t clidrev; 1717 1718 if (NFSHASNFSV4(nmp)) { 1719 retrycnt = 0; 1720 do { 1721 dp = NULL; 1722 error = nfscl_open(dvp, NULL, 0, (NFSV4OPEN_ACCESSWRITE | 1723 NFSV4OPEN_ACCESSREAD), 0, cred, p, &owp, NULL, &newone, 1724 NULL, 1); 1725 if (error) 1726 return (error); 1727 if (nmp->nm_clp != NULL) 1728 clidrev = nmp->nm_clp->nfsc_clientidrev; 1729 else 1730 clidrev = 0; 1731 error = nfsrpc_createv4(dvp, name, namelen, vap, cverf, fmode, 1732 owp, &dp, cred, p, dnap, nnap, nfhpp, attrflagp, dattrflagp, 1733 dstuff, &unlocked); 1734 if (dp != NULL) 1735 (void) nfscl_deleg(nmp->nm_mountp, owp->nfsow_clp, 1736 (*nfhpp)->nfh_fh, (*nfhpp)->nfh_len, cred, p, &dp); 1737 nfscl_ownerrelease(owp, error, newone, unlocked); 1738 if (error == NFSERR_GRACE || error == NFSERR_STALECLIENTID || 1739 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY) { 1740 (void) nfs_catnap(PZERO, error, "nfs_open"); 1741 } else if ((error == NFSERR_EXPIRED || 1742 error == NFSERR_BADSTATEID) && clidrev != 0) { 1743 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p); 1744 retrycnt++; 1745 } 1746 } while (error == NFSERR_GRACE || error == NFSERR_STALECLIENTID || 1747 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 1748 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) && 1749 expireret == 0 && clidrev != 0 && retrycnt < 4)); 1750 if (error && retrycnt >= 4) 1751 error = EIO; 1752 } else { 1753 error = nfsrpc_createv23(dvp, name, namelen, vap, cverf, 1754 fmode, cred, p, dnap, nnap, nfhpp, attrflagp, dattrflagp, 1755 dstuff); 1756 } 1757 return (error); 1758} 1759 1760/* 1761 * The create rpc for v2 and 3. 1762 */ 1763static int 1764nfsrpc_createv23(vnode_t dvp, char *name, int namelen, struct vattr *vap, 1765 nfsquad_t cverf, int fmode, struct ucred *cred, NFSPROC_T *p, 1766 struct nfsvattr *dnap, struct nfsvattr *nnap, struct nfsfh **nfhpp, 1767 int *attrflagp, int *dattrflagp, void *dstuff) 1768{ 1769 u_int32_t *tl; 1770 int error = 0; 1771 struct nfsrv_descript nfsd, *nd = &nfsd; 1772 1773 *nfhpp = NULL; 1774 *attrflagp = 0; 1775 *dattrflagp = 0; 1776 if (namelen > NFS_MAXNAMLEN) 1777 return (ENAMETOOLONG); 1778 NFSCL_REQSTART(nd, NFSPROC_CREATE, dvp); 1779 (void) nfsm_strtom(nd, name, namelen); 1780 if (nd->nd_flag & ND_NFSV3) { 1781 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1782 if (fmode & O_EXCL) { 1783 *tl = txdr_unsigned(NFSCREATE_EXCLUSIVE); 1784 NFSM_BUILD(tl, u_int32_t *, NFSX_VERF); 1785 *tl++ = cverf.lval[0]; 1786 *tl = cverf.lval[1]; 1787 } else { 1788 *tl = txdr_unsigned(NFSCREATE_UNCHECKED); 1789 nfscl_fillsattr(nd, vap, dvp, 0, 0); 1790 } 1791 } else { 1792 nfscl_fillsattr(nd, vap, dvp, NFSSATTR_SIZE0, 0); 1793 } 1794 error = nfscl_request(nd, dvp, p, cred, dstuff); 1795 if (error) 1796 return (error); 1797 if (nd->nd_repstat == 0) { 1798 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp); 1799 if (error) 1800 goto nfsmout; 1801 } 1802 if (nd->nd_flag & ND_NFSV3) 1803 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 1804 if (nd->nd_repstat != 0 && error == 0) 1805 error = nd->nd_repstat; 1806nfsmout: 1807 mbuf_freem(nd->nd_mrep); 1808 return (error); 1809} 1810 1811static int 1812nfsrpc_createv4(vnode_t dvp, char *name, int namelen, struct vattr *vap, 1813 nfsquad_t cverf, int fmode, struct nfsclowner *owp, struct nfscldeleg **dpp, 1814 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap, 1815 struct nfsvattr *nnap, struct nfsfh **nfhpp, int *attrflagp, 1816 int *dattrflagp, void *dstuff, int *unlockedp) 1817{ 1818 u_int32_t *tl; 1819 int error = 0, deleg, newone, ret, acesize, limitby; 1820 struct nfsrv_descript nfsd, *nd = &nfsd; 1821 struct nfsclopen *op; 1822 struct nfscldeleg *dp = NULL; 1823 struct nfsnode *np; 1824 struct nfsfh *nfhp; 1825 nfsattrbit_t attrbits; 1826 nfsv4stateid_t stateid; 1827 u_int32_t rflags; 1828 1829 *unlockedp = 0; 1830 *nfhpp = NULL; 1831 *dpp = NULL; 1832 *attrflagp = 0; 1833 *dattrflagp = 0; 1834 if (namelen > NFS_MAXNAMLEN) 1835 return (ENAMETOOLONG); 1836 NFSCL_REQSTART(nd, NFSPROC_CREATE, dvp); 1837 /* 1838 * For V4, this is actually an Open op. 1839 */ 1840 NFSM_BUILD(tl, u_int32_t *, 5 * NFSX_UNSIGNED); 1841 *tl++ = txdr_unsigned(owp->nfsow_seqid); 1842 *tl++ = txdr_unsigned(NFSV4OPEN_ACCESSWRITE | 1843 NFSV4OPEN_ACCESSREAD); 1844 *tl++ = txdr_unsigned(NFSV4OPEN_DENYNONE); 1845 *tl++ = owp->nfsow_clp->nfsc_clientid.lval[0]; 1846 *tl = owp->nfsow_clp->nfsc_clientid.lval[1]; 1847 (void) nfsm_strtom(nd, owp->nfsow_owner, NFSV4CL_LOCKNAMELEN); 1848 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1849 *tl++ = txdr_unsigned(NFSV4OPEN_CREATE); 1850 if (fmode & O_EXCL) { 1851 *tl = txdr_unsigned(NFSCREATE_EXCLUSIVE); 1852 NFSM_BUILD(tl, u_int32_t *, NFSX_VERF); 1853 *tl++ = cverf.lval[0]; 1854 *tl = cverf.lval[1]; 1855 } else { 1856 *tl = txdr_unsigned(NFSCREATE_UNCHECKED); 1857 nfscl_fillsattr(nd, vap, dvp, 0, 0); 1858 } 1859 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1860 *tl = txdr_unsigned(NFSV4OPEN_CLAIMNULL); 1861 (void) nfsm_strtom(nd, name, namelen); 1862 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1863 *tl++ = txdr_unsigned(NFSV4OP_GETFH); 1864 *tl = txdr_unsigned(NFSV4OP_GETATTR); 1865 NFSGETATTR_ATTRBIT(&attrbits); 1866 (void) nfsrv_putattrbit(nd, &attrbits); 1867 error = nfscl_request(nd, dvp, p, cred, dstuff); 1868 if (error) 1869 return (error); 1870 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 1871 if (error) 1872 goto nfsmout; 1873 NFSCL_INCRSEQID(owp->nfsow_seqid, nd); 1874 if (nd->nd_repstat == 0) { 1875 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID + 1876 6 * NFSX_UNSIGNED); 1877 stateid.seqid = *tl++; 1878 stateid.other[0] = *tl++; 1879 stateid.other[1] = *tl++; 1880 stateid.other[2] = *tl; 1881 rflags = fxdr_unsigned(u_int32_t, *(tl + 6)); 1882 (void) nfsrv_getattrbits(nd, &attrbits, NULL, NULL); 1883 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 1884 deleg = fxdr_unsigned(int, *tl); 1885 if (deleg == NFSV4OPEN_DELEGATEREAD || 1886 deleg == NFSV4OPEN_DELEGATEWRITE) { 1887 if (!(owp->nfsow_clp->nfsc_flags & 1888 NFSCLFLAGS_FIRSTDELEG)) 1889 owp->nfsow_clp->nfsc_flags |= 1890 (NFSCLFLAGS_FIRSTDELEG | NFSCLFLAGS_GOTDELEG); 1891 MALLOC(dp, struct nfscldeleg *, 1892 sizeof (struct nfscldeleg) + NFSX_V4FHMAX, 1893 M_NFSCLDELEG, M_WAITOK); 1894 LIST_INIT(&dp->nfsdl_owner); 1895 LIST_INIT(&dp->nfsdl_lock); 1896 dp->nfsdl_clp = owp->nfsow_clp; 1897 newnfs_copyincred(cred, &dp->nfsdl_cred); 1898 nfscl_lockinit(&dp->nfsdl_rwlock); 1899 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID + 1900 NFSX_UNSIGNED); 1901 dp->nfsdl_stateid.seqid = *tl++; 1902 dp->nfsdl_stateid.other[0] = *tl++; 1903 dp->nfsdl_stateid.other[1] = *tl++; 1904 dp->nfsdl_stateid.other[2] = *tl++; 1905 ret = fxdr_unsigned(int, *tl); 1906 if (deleg == NFSV4OPEN_DELEGATEWRITE) { 1907 dp->nfsdl_flags = NFSCLDL_WRITE; 1908 /* 1909 * Indicates how much the file can grow. 1910 */ 1911 NFSM_DISSECT(tl, u_int32_t *, 1912 3 * NFSX_UNSIGNED); 1913 limitby = fxdr_unsigned(int, *tl++); 1914 switch (limitby) { 1915 case NFSV4OPEN_LIMITSIZE: 1916 dp->nfsdl_sizelimit = fxdr_hyper(tl); 1917 break; 1918 case NFSV4OPEN_LIMITBLOCKS: 1919 dp->nfsdl_sizelimit = 1920 fxdr_unsigned(u_int64_t, *tl++); 1921 dp->nfsdl_sizelimit *= 1922 fxdr_unsigned(u_int64_t, *tl); 1923 break; 1924 default: 1925 error = NFSERR_BADXDR; 1926 goto nfsmout; 1927 }; 1928 } else { 1929 dp->nfsdl_flags = NFSCLDL_READ; 1930 } 1931 if (ret) 1932 dp->nfsdl_flags |= NFSCLDL_RECALL; 1933 error = nfsrv_dissectace(nd, &dp->nfsdl_ace, &ret, 1934 &acesize, p); 1935 if (error) 1936 goto nfsmout; 1937 } else if (deleg != NFSV4OPEN_DELEGATENONE) { 1938 error = NFSERR_BADXDR; 1939 goto nfsmout; 1940 } 1941 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp); 1942 if (error) 1943 goto nfsmout; 1944 if (dp != NULL && *attrflagp) { 1945 dp->nfsdl_change = nnap->na_filerev; 1946 dp->nfsdl_modtime = nnap->na_mtime; 1947 dp->nfsdl_flags |= NFSCLDL_MODTIMESET; 1948 } 1949 /* 1950 * We can now complete the Open state. 1951 */ 1952 nfhp = *nfhpp; 1953 if (dp != NULL) { 1954 dp->nfsdl_fhlen = nfhp->nfh_len; 1955 NFSBCOPY(nfhp->nfh_fh, dp->nfsdl_fh, nfhp->nfh_len); 1956 } 1957 /* 1958 * Get an Open structure that will be 1959 * attached to the OpenOwner, acquired already. 1960 */ 1961 error = nfscl_open(dvp, nfhp->nfh_fh, nfhp->nfh_len, 1962 (NFSV4OPEN_ACCESSWRITE | NFSV4OPEN_ACCESSREAD), 0, 1963 cred, p, NULL, &op, &newone, NULL, 0); 1964 if (error) 1965 goto nfsmout; 1966 op->nfso_stateid = stateid; 1967 newnfs_copyincred(cred, &op->nfso_cred); 1968 if ((rflags & NFSV4OPEN_RESULTCONFIRM)) { 1969 do { 1970 ret = nfsrpc_openconfirm(dvp, nfhp->nfh_fh, 1971 nfhp->nfh_len, op, cred, p); 1972 if (ret == NFSERR_DELAY) 1973 (void) nfs_catnap(PZERO, ret, "nfs_create"); 1974 } while (ret == NFSERR_DELAY); 1975 error = ret; 1976 } 1977 1978 /* 1979 * If the server is handing out delegations, but we didn't 1980 * get one because an OpenConfirm was required, try the 1981 * Open again, to get a delegation. This is a harmless no-op, 1982 * from a server's point of view. 1983 */ 1984 if ((rflags & NFSV4OPEN_RESULTCONFIRM) && 1985 (owp->nfsow_clp->nfsc_flags & NFSCLFLAGS_GOTDELEG) && 1986 !error && dp == NULL) { 1987 np = VTONFS(dvp); 1988 do { 1989 ret = nfsrpc_openrpc(VFSTONFS(vnode_mount(dvp)), dvp, 1990 np->n_fhp->nfh_fh, np->n_fhp->nfh_len, 1991 nfhp->nfh_fh, nfhp->nfh_len, 1992 (NFSV4OPEN_ACCESSWRITE | NFSV4OPEN_ACCESSREAD), op, 1993 name, namelen, &dp, 0, 0x0, cred, p, 0, 1); 1994 if (ret == NFSERR_DELAY) 1995 (void) nfs_catnap(PZERO, ret, "nfs_crt2"); 1996 } while (ret == NFSERR_DELAY); 1997 if (ret) { 1998 if (dp != NULL) 1999 FREE((caddr_t)dp, M_NFSCLDELEG); 2000 if (ret == NFSERR_STALECLIENTID || 2001 ret == NFSERR_STALEDONTRECOVER) 2002 error = ret; 2003 } 2004 } 2005 nfscl_openrelease(op, error, newone); 2006 *unlockedp = 1; 2007 } 2008 if (nd->nd_repstat != 0 && error == 0) 2009 error = nd->nd_repstat; 2010 if (error == NFSERR_STALECLIENTID) 2011 nfscl_initiate_recovery(owp->nfsow_clp); 2012nfsmout: 2013 if (!error) 2014 *dpp = dp; 2015 else if (dp != NULL) 2016 FREE((caddr_t)dp, M_NFSCLDELEG); 2017 mbuf_freem(nd->nd_mrep); 2018 return (error); 2019} 2020 2021/* 2022 * Nfs remove rpc 2023 */ 2024APPLESTATIC int 2025nfsrpc_remove(vnode_t dvp, char *name, int namelen, vnode_t vp, 2026 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap, int *dattrflagp, 2027 void *dstuff) 2028{ 2029 u_int32_t *tl; 2030 struct nfsrv_descript nfsd, *nd = &nfsd; 2031 struct nfsnode *np; 2032 struct nfsmount *nmp; 2033 nfsv4stateid_t dstateid; 2034 int error, ret = 0, i; 2035 2036 *dattrflagp = 0; 2037 if (namelen > NFS_MAXNAMLEN) 2038 return (ENAMETOOLONG); 2039 nmp = VFSTONFS(vnode_mount(dvp)); 2040tryagain: 2041 if (NFSHASNFSV4(nmp) && ret == 0) { 2042 ret = nfscl_removedeleg(vp, p, &dstateid); 2043 if (ret == 1) { 2044 NFSCL_REQSTART(nd, NFSPROC_RETDELEGREMOVE, vp); 2045 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID + 2046 NFSX_UNSIGNED); 2047 *tl++ = dstateid.seqid; 2048 *tl++ = dstateid.other[0]; 2049 *tl++ = dstateid.other[1]; 2050 *tl++ = dstateid.other[2]; 2051 *tl = txdr_unsigned(NFSV4OP_PUTFH); 2052 np = VTONFS(dvp); 2053 (void) nfsm_fhtom(nd, np->n_fhp->nfh_fh, 2054 np->n_fhp->nfh_len, 0); 2055 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2056 *tl = txdr_unsigned(NFSV4OP_REMOVE); 2057 } 2058 } else { 2059 ret = 0; 2060 } 2061 if (ret == 0) 2062 NFSCL_REQSTART(nd, NFSPROC_REMOVE, dvp); 2063 (void) nfsm_strtom(nd, name, namelen); 2064 error = nfscl_request(nd, dvp, p, cred, dstuff); 2065 if (error) 2066 return (error); 2067 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) { 2068 /* For NFSv4, parse out any Delereturn replies. */ 2069 if (ret > 0 && nd->nd_repstat != 0 && 2070 (nd->nd_flag & ND_NOMOREDATA)) { 2071 /* 2072 * If the Delegreturn failed, try again without 2073 * it. The server will Recall, as required. 2074 */ 2075 mbuf_freem(nd->nd_mrep); 2076 goto tryagain; 2077 } 2078 for (i = 0; i < (ret * 2); i++) { 2079 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == 2080 ND_NFSV4) { 2081 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2082 if (*(tl + 1)) 2083 nd->nd_flag |= ND_NOMOREDATA; 2084 } 2085 } 2086 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 2087 } 2088 if (nd->nd_repstat && !error) 2089 error = nd->nd_repstat; 2090nfsmout: 2091 mbuf_freem(nd->nd_mrep); 2092 return (error); 2093} 2094 2095/* 2096 * Do an nfs rename rpc. 2097 */ 2098APPLESTATIC int 2099nfsrpc_rename(vnode_t fdvp, vnode_t fvp, char *fnameptr, int fnamelen, 2100 vnode_t tdvp, vnode_t tvp, char *tnameptr, int tnamelen, struct ucred *cred, 2101 NFSPROC_T *p, struct nfsvattr *fnap, struct nfsvattr *tnap, 2102 int *fattrflagp, int *tattrflagp, void *fstuff, void *tstuff) 2103{ 2104 u_int32_t *tl; 2105 struct nfsrv_descript nfsd, *nd = &nfsd; 2106 struct nfsmount *nmp; 2107 struct nfsnode *np; 2108 nfsattrbit_t attrbits; 2109 nfsv4stateid_t fdstateid, tdstateid; 2110 int error = 0, ret = 0, gottd = 0, gotfd = 0, i; 2111 2112 *fattrflagp = 0; 2113 *tattrflagp = 0; 2114 nmp = VFSTONFS(vnode_mount(fdvp)); 2115 if (fnamelen > NFS_MAXNAMLEN || tnamelen > NFS_MAXNAMLEN) 2116 return (ENAMETOOLONG); 2117tryagain: 2118 if (NFSHASNFSV4(nmp) && ret == 0) { 2119 ret = nfscl_renamedeleg(fvp, &fdstateid, &gotfd, tvp, 2120 &tdstateid, &gottd, p); 2121 if (gotfd && gottd) { 2122 NFSCL_REQSTART(nd, NFSPROC_RETDELEGRENAME2, fvp); 2123 } else if (gotfd) { 2124 NFSCL_REQSTART(nd, NFSPROC_RETDELEGRENAME1, fvp); 2125 } else if (gottd) { 2126 NFSCL_REQSTART(nd, NFSPROC_RETDELEGRENAME1, tvp); 2127 } 2128 if (gotfd) { 2129 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID); 2130 *tl++ = fdstateid.seqid; 2131 *tl++ = fdstateid.other[0]; 2132 *tl++ = fdstateid.other[1]; 2133 *tl = fdstateid.other[2]; 2134 if (gottd) { 2135 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2136 *tl = txdr_unsigned(NFSV4OP_PUTFH); 2137 np = VTONFS(tvp); 2138 (void) nfsm_fhtom(nd, np->n_fhp->nfh_fh, 2139 np->n_fhp->nfh_len, 0); 2140 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2141 *tl = txdr_unsigned(NFSV4OP_DELEGRETURN); 2142 } 2143 } 2144 if (gottd) { 2145 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID); 2146 *tl++ = tdstateid.seqid; 2147 *tl++ = tdstateid.other[0]; 2148 *tl++ = tdstateid.other[1]; 2149 *tl = tdstateid.other[2]; 2150 } 2151 if (ret > 0) { 2152 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2153 *tl = txdr_unsigned(NFSV4OP_PUTFH); 2154 np = VTONFS(fdvp); 2155 (void) nfsm_fhtom(nd, np->n_fhp->nfh_fh, 2156 np->n_fhp->nfh_len, 0); 2157 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2158 *tl = txdr_unsigned(NFSV4OP_SAVEFH); 2159 } 2160 } else { 2161 ret = 0; 2162 } 2163 if (ret == 0) 2164 NFSCL_REQSTART(nd, NFSPROC_RENAME, fdvp); 2165 if (nd->nd_flag & ND_NFSV4) { 2166 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2167 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2168 NFSWCCATTR_ATTRBIT(&attrbits); 2169 (void) nfsrv_putattrbit(nd, &attrbits); 2170 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2171 *tl = txdr_unsigned(NFSV4OP_PUTFH); 2172 (void) nfsm_fhtom(nd, VTONFS(tdvp)->n_fhp->nfh_fh, 2173 VTONFS(tdvp)->n_fhp->nfh_len, 0); 2174 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2175 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2176 (void) nfsrv_putattrbit(nd, &attrbits); 2177 nd->nd_flag |= ND_V4WCCATTR; 2178 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2179 *tl = txdr_unsigned(NFSV4OP_RENAME); 2180 } 2181 (void) nfsm_strtom(nd, fnameptr, fnamelen); 2182 if (!(nd->nd_flag & ND_NFSV4)) 2183 (void) nfsm_fhtom(nd, VTONFS(tdvp)->n_fhp->nfh_fh, 2184 VTONFS(tdvp)->n_fhp->nfh_len, 0); 2185 (void) nfsm_strtom(nd, tnameptr, tnamelen); 2186 error = nfscl_request(nd, fdvp, p, cred, fstuff); 2187 if (error) 2188 return (error); 2189 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) { 2190 /* For NFSv4, parse out any Delereturn replies. */ 2191 if (ret > 0 && nd->nd_repstat != 0 && 2192 (nd->nd_flag & ND_NOMOREDATA)) { 2193 /* 2194 * If the Delegreturn failed, try again without 2195 * it. The server will Recall, as required. 2196 */ 2197 mbuf_freem(nd->nd_mrep); 2198 goto tryagain; 2199 } 2200 for (i = 0; i < (ret * 2); i++) { 2201 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == 2202 ND_NFSV4) { 2203 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2204 if (*(tl + 1)) { 2205 if (i == 0 && ret > 1) { 2206 /* 2207 * If the Delegreturn failed, try again 2208 * without it. The server will Recall, as 2209 * required. 2210 * If ret > 1, the first iteration of this 2211 * loop is the second DelegReturn result. 2212 */ 2213 mbuf_freem(nd->nd_mrep); 2214 goto tryagain; 2215 } else { 2216 nd->nd_flag |= ND_NOMOREDATA; 2217 } 2218 } 2219 } 2220 } 2221 /* Now, the first wcc attribute reply. */ 2222 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == ND_NFSV4) { 2223 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2224 if (*(tl + 1)) 2225 nd->nd_flag |= ND_NOMOREDATA; 2226 } 2227 error = nfscl_wcc_data(nd, fdvp, fnap, fattrflagp, NULL, 2228 fstuff); 2229 /* and the second wcc attribute reply. */ 2230 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == ND_NFSV4 && 2231 !error) { 2232 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2233 if (*(tl + 1)) 2234 nd->nd_flag |= ND_NOMOREDATA; 2235 } 2236 if (!error) 2237 error = nfscl_wcc_data(nd, tdvp, tnap, tattrflagp, 2238 NULL, tstuff); 2239 } 2240 if (nd->nd_repstat && !error) 2241 error = nd->nd_repstat; 2242nfsmout: 2243 mbuf_freem(nd->nd_mrep); 2244 return (error); 2245} 2246 2247/* 2248 * nfs hard link create rpc 2249 */ 2250APPLESTATIC int 2251nfsrpc_link(vnode_t dvp, vnode_t vp, char *name, int namelen, 2252 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap, 2253 struct nfsvattr *nap, int *attrflagp, int *dattrflagp, void *dstuff) 2254{ 2255 u_int32_t *tl; 2256 struct nfsrv_descript nfsd, *nd = &nfsd; 2257 nfsattrbit_t attrbits; 2258 int error = 0; 2259 2260 *attrflagp = 0; 2261 *dattrflagp = 0; 2262 if (namelen > NFS_MAXNAMLEN) 2263 return (ENAMETOOLONG); 2264 NFSCL_REQSTART(nd, NFSPROC_LINK, vp); 2265 if (nd->nd_flag & ND_NFSV4) { 2266 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2267 *tl = txdr_unsigned(NFSV4OP_PUTFH); 2268 } 2269 (void) nfsm_fhtom(nd, VTONFS(dvp)->n_fhp->nfh_fh, 2270 VTONFS(dvp)->n_fhp->nfh_len, 0); 2271 if (nd->nd_flag & ND_NFSV4) { 2272 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2273 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2274 NFSWCCATTR_ATTRBIT(&attrbits); 2275 (void) nfsrv_putattrbit(nd, &attrbits); 2276 nd->nd_flag |= ND_V4WCCATTR; 2277 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2278 *tl = txdr_unsigned(NFSV4OP_LINK); 2279 } 2280 (void) nfsm_strtom(nd, name, namelen); 2281 error = nfscl_request(nd, vp, p, cred, dstuff); 2282 if (error) 2283 return (error); 2284 if (nd->nd_flag & ND_NFSV3) { 2285 error = nfscl_postop_attr(nd, nap, attrflagp, dstuff); 2286 if (!error) 2287 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, 2288 NULL, dstuff); 2289 } else if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == ND_NFSV4) { 2290 /* 2291 * First, parse out the PutFH and Getattr result. 2292 */ 2293 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2294 if (!(*(tl + 1))) 2295 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2296 if (*(tl + 1)) 2297 nd->nd_flag |= ND_NOMOREDATA; 2298 /* 2299 * Get the pre-op attributes. 2300 */ 2301 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 2302 } 2303 if (nd->nd_repstat && !error) 2304 error = nd->nd_repstat; 2305nfsmout: 2306 mbuf_freem(nd->nd_mrep); 2307 return (error); 2308} 2309 2310/* 2311 * nfs symbolic link create rpc 2312 */ 2313APPLESTATIC int 2314nfsrpc_symlink(vnode_t dvp, char *name, int namelen, char *target, 2315 struct vattr *vap, struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap, 2316 struct nfsvattr *nnap, struct nfsfh **nfhpp, int *attrflagp, 2317 int *dattrflagp, void *dstuff) 2318{ 2319 u_int32_t *tl; 2320 struct nfsrv_descript nfsd, *nd = &nfsd; 2321 struct nfsmount *nmp; 2322 int slen, error = 0; 2323 2324 *nfhpp = NULL; 2325 *attrflagp = 0; 2326 *dattrflagp = 0; 2327 nmp = VFSTONFS(vnode_mount(dvp)); 2328 slen = strlen(target); 2329 if (slen > NFS_MAXPATHLEN || namelen > NFS_MAXNAMLEN) 2330 return (ENAMETOOLONG); 2331 NFSCL_REQSTART(nd, NFSPROC_SYMLINK, dvp); 2332 if (nd->nd_flag & ND_NFSV4) { 2333 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2334 *tl = txdr_unsigned(NFLNK); 2335 (void) nfsm_strtom(nd, target, slen); 2336 } 2337 (void) nfsm_strtom(nd, name, namelen); 2338 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) 2339 nfscl_fillsattr(nd, vap, dvp, 0, 0); 2340 if (!(nd->nd_flag & ND_NFSV4)) 2341 (void) nfsm_strtom(nd, target, slen); 2342 if (nd->nd_flag & ND_NFSV2) 2343 nfscl_fillsattr(nd, vap, dvp, NFSSATTR_SIZENEG1, 0); 2344 error = nfscl_request(nd, dvp, p, cred, dstuff); 2345 if (error) 2346 return (error); 2347 if (nd->nd_flag & ND_NFSV4) 2348 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 2349 if ((nd->nd_flag & ND_NFSV3) && !error) { 2350 if (!nd->nd_repstat) 2351 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp); 2352 if (!error) 2353 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, 2354 NULL, dstuff); 2355 } 2356 if (nd->nd_repstat && !error) 2357 error = nd->nd_repstat; 2358 mbuf_freem(nd->nd_mrep); 2359 /* 2360 * Kludge: Map EEXIST => 0 assuming that it is a reply to a retry. 2361 */ 2362 if (error == EEXIST) 2363 error = 0; 2364 return (error); 2365} 2366 2367/* 2368 * nfs make dir rpc 2369 */ 2370APPLESTATIC int 2371nfsrpc_mkdir(vnode_t dvp, char *name, int namelen, struct vattr *vap, 2372 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap, 2373 struct nfsvattr *nnap, struct nfsfh **nfhpp, int *attrflagp, 2374 int *dattrflagp, void *dstuff) 2375{ 2376 u_int32_t *tl; 2377 struct nfsrv_descript nfsd, *nd = &nfsd; 2378 nfsattrbit_t attrbits; 2379 int error = 0; 2380 2381 *nfhpp = NULL; 2382 *attrflagp = 0; 2383 *dattrflagp = 0; 2384 if (namelen > NFS_MAXNAMLEN) 2385 return (ENAMETOOLONG); 2386 NFSCL_REQSTART(nd, NFSPROC_MKDIR, dvp); 2387 if (nd->nd_flag & ND_NFSV4) { 2388 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2389 *tl = txdr_unsigned(NFDIR); 2390 } 2391 (void) nfsm_strtom(nd, name, namelen); 2392 nfscl_fillsattr(nd, vap, dvp, NFSSATTR_SIZENEG1, 0); 2393 if (nd->nd_flag & ND_NFSV4) { 2394 NFSGETATTR_ATTRBIT(&attrbits); 2395 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2396 *tl++ = txdr_unsigned(NFSV4OP_GETFH); 2397 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2398 (void) nfsrv_putattrbit(nd, &attrbits); 2399 } 2400 error = nfscl_request(nd, dvp, p, cred, dstuff); 2401 if (error) 2402 return (error); 2403 if (nd->nd_flag & ND_NFSV4) 2404 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 2405 if (!nd->nd_repstat && !error) { 2406 if (nd->nd_flag & ND_NFSV4) { 2407 NFSM_DISSECT(tl, u_int32_t *, 5 * NFSX_UNSIGNED); 2408 error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL); 2409 } 2410 if (!error) 2411 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp); 2412 } 2413 if ((nd->nd_flag & ND_NFSV3) && !error) 2414 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 2415 if (nd->nd_repstat && !error) 2416 error = nd->nd_repstat; 2417nfsmout: 2418 mbuf_freem(nd->nd_mrep); 2419 /* 2420 * Kludge: Map EEXIST => 0 assuming that you have a reply to a retry. 2421 */ 2422 if (error == EEXIST) 2423 error = 0; 2424 return (error); 2425} 2426 2427/* 2428 * nfs remove directory call 2429 */ 2430APPLESTATIC int 2431nfsrpc_rmdir(vnode_t dvp, char *name, int namelen, struct ucred *cred, 2432 NFSPROC_T *p, struct nfsvattr *dnap, int *dattrflagp, void *dstuff) 2433{ 2434 struct nfsrv_descript nfsd, *nd = &nfsd; 2435 int error = 0; 2436 2437 *dattrflagp = 0; 2438 if (namelen > NFS_MAXNAMLEN) 2439 return (ENAMETOOLONG); 2440 NFSCL_REQSTART(nd, NFSPROC_RMDIR, dvp); 2441 (void) nfsm_strtom(nd, name, namelen); 2442 error = nfscl_request(nd, dvp, p, cred, dstuff); 2443 if (error) 2444 return (error); 2445 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) 2446 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 2447 if (nd->nd_repstat && !error) 2448 error = nd->nd_repstat; 2449 mbuf_freem(nd->nd_mrep); 2450 /* 2451 * Kludge: Map ENOENT => 0 assuming that you have a reply to a retry. 2452 */ 2453 if (error == ENOENT) 2454 error = 0; 2455 return (error); 2456} 2457 2458/* 2459 * Readdir rpc. 2460 * Always returns with either uio_resid unchanged, if you are at the 2461 * end of the directory, or uio_resid == 0, with all DIRBLKSIZ chunks 2462 * filled in. 2463 * I felt this would allow caching of directory blocks more easily 2464 * than returning a pertially filled block. 2465 * Directory offset cookies: 2466 * Oh my, what to do with them... 2467 * I can think of three ways to deal with them: 2468 * 1 - have the layer above these RPCs maintain a map between logical 2469 * directory byte offsets and the NFS directory offset cookies 2470 * 2 - pass the opaque directory offset cookies up into userland 2471 * and let the libc functions deal with them, via the system call 2472 * 3 - return them to userland in the "struct dirent", so future versions 2473 * of libc can use them and do whatever is necessary to amke things work 2474 * above these rpc calls, in the meantime 2475 * For now, I do #3 by "hiding" the directory offset cookies after the 2476 * d_name field in struct dirent. This is space inside d_reclen that 2477 * will be ignored by anything that doesn't know about them. 2478 * The directory offset cookies are filled in as the last 8 bytes of 2479 * each directory entry, after d_name. Someday, the userland libc 2480 * functions may be able to use these. In the meantime, it satisfies 2481 * OpenBSD's requirements for cookies being returned. 2482 * If expects the directory offset cookie for the read to be in uio_offset 2483 * and returns the one for the next entry after this directory block in 2484 * there, as well. 2485 */ 2486APPLESTATIC int 2487nfsrpc_readdir(vnode_t vp, struct uio *uiop, nfsuint64 *cookiep, 2488 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, 2489 int *eofp, void *stuff) 2490{ 2491 int len, left; 2492 struct dirent *dp = NULL; 2493 u_int32_t *tl; 2494 nfsquad_t cookie, ncookie; 2495 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 2496 struct nfsnode *dnp = VTONFS(vp); 2497 struct nfsvattr nfsva; 2498 struct nfsrv_descript nfsd, *nd = &nfsd; 2499 int error = 0, tlen, more_dirs = 1, blksiz = 0, bigenough = 1; 2500 int reqsize, tryformoredirs = 1, readsize, eof = 0, gotmnton = 0; 2501 long dotfileid, dotdotfileid = 0; 2502 u_int32_t fakefileno = 0xffffffff, rderr; 2503 char *cp; 2504 nfsattrbit_t attrbits, dattrbits; 2505 u_int32_t *tl2 = NULL; 2506 size_t tresid; 2507 2508#ifdef DIAGNOSTIC 2509 if (uiop->uio_iovcnt != 1 || (uio_uio_resid(uiop) & (DIRBLKSIZ - 1))) 2510 panic("nfs readdirrpc bad uio"); 2511#endif 2512 2513 /* 2514 * There is no point in reading a lot more than uio_resid, however 2515 * adding one additional DIRBLKSIZ makes sense. Since uio_resid 2516 * and nm_readdirsize are both exact multiples of DIRBLKSIZ, this 2517 * will never make readsize > nm_readdirsize. 2518 */ 2519 readsize = nmp->nm_readdirsize; 2520 if (readsize > uio_uio_resid(uiop)) 2521 readsize = uio_uio_resid(uiop) + DIRBLKSIZ; 2522 2523 *attrflagp = 0; 2524 if (eofp) 2525 *eofp = 0; 2526 tresid = uio_uio_resid(uiop); 2527 cookie.lval[0] = cookiep->nfsuquad[0]; 2528 cookie.lval[1] = cookiep->nfsuquad[1]; 2529 nd->nd_mrep = NULL; 2530 2531 /* 2532 * For NFSv4, first create the "." and ".." entries. 2533 */ 2534 if (NFSHASNFSV4(nmp)) { 2535 reqsize = 6 * NFSX_UNSIGNED; 2536 NFSGETATTR_ATTRBIT(&dattrbits); 2537 NFSZERO_ATTRBIT(&attrbits); 2538 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_FILEID); 2539 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_TYPE); 2540 if (NFSISSET_ATTRBIT(&dnp->n_vattr.na_suppattr, 2541 NFSATTRBIT_MOUNTEDONFILEID)) { 2542 NFSSETBIT_ATTRBIT(&attrbits, 2543 NFSATTRBIT_MOUNTEDONFILEID); 2544 gotmnton = 1; 2545 } else { 2546 /* 2547 * Must fake it. Use the fileno, except when the 2548 * fsid is != to that of the directory. For that 2549 * case, generate a fake fileno that is not the same. 2550 */ 2551 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_FSID); 2552 gotmnton = 0; 2553 } 2554 2555 /* 2556 * Joy, oh joy. For V4 we get to hand craft '.' and '..'. 2557 */ 2558 if (uiop->uio_offset == 0) { 2559#if defined(__FreeBSD_version) && __FreeBSD_version >= 800000 2560 error = VOP_GETATTR(vp, &nfsva.na_vattr, cred); 2561#else 2562 error = VOP_GETATTR(vp, &nfsva.na_vattr, cred, p); 2563#endif 2564 if (error) 2565 return (error); 2566 dotfileid = nfsva.na_fileid; 2567 NFSCL_REQSTART(nd, NFSPROC_LOOKUPP, vp); 2568 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2569 *tl++ = txdr_unsigned(NFSV4OP_GETFH); 2570 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2571 (void) nfsrv_putattrbit(nd, &attrbits); 2572 error = nfscl_request(nd, vp, p, cred, stuff); 2573 if (error) 2574 return (error); 2575 if (nd->nd_repstat == 0) { 2576 NFSM_DISSECT(tl, u_int32_t *, 3*NFSX_UNSIGNED); 2577 len = fxdr_unsigned(int, *(tl + 2)); 2578 if (len > 0 && len <= NFSX_V4FHMAX) 2579 error = nfsm_advance(nd, NFSM_RNDUP(len), -1); 2580 else 2581 error = EPERM; 2582 if (!error) { 2583 NFSM_DISSECT(tl, u_int32_t *, 2*NFSX_UNSIGNED); 2584 nfsva.na_mntonfileno = 0xffffffff; 2585 error = nfsv4_loadattr(nd, NULL, &nfsva, NULL, 2586 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0, 2587 NULL, NULL, NULL, p, cred); 2588 if (error) { 2589 dotdotfileid = dotfileid; 2590 } else if (gotmnton) { 2591 if (nfsva.na_mntonfileno != 0xffffffff) 2592 dotdotfileid = nfsva.na_mntonfileno; 2593 else 2594 dotdotfileid = nfsva.na_fileid; 2595 } else if (nfsva.na_filesid[0] == 2596 dnp->n_vattr.na_filesid[0] && 2597 nfsva.na_filesid[1] == 2598 dnp->n_vattr.na_filesid[1]) { 2599 dotdotfileid = nfsva.na_fileid; 2600 } else { 2601 do { 2602 fakefileno--; 2603 } while (fakefileno == 2604 nfsva.na_fileid); 2605 dotdotfileid = fakefileno; 2606 } 2607 } 2608 } else if (nd->nd_repstat == NFSERR_NOENT) { 2609 /* 2610 * Lookupp returns NFSERR_NOENT when we are 2611 * at the root, so just use the current dir. 2612 */ 2613 nd->nd_repstat = 0; 2614 dotdotfileid = dotfileid; 2615 } else { 2616 error = nd->nd_repstat; 2617 } 2618 mbuf_freem(nd->nd_mrep); 2619 if (error) 2620 return (error); 2621 nd->nd_mrep = NULL; 2622 dp = (struct dirent *) CAST_DOWN(caddr_t, uio_iov_base(uiop)); 2623 dp->d_type = DT_DIR; 2624 dp->d_fileno = dotfileid; 2625 dp->d_namlen = 1; 2626 dp->d_name[0] = '.'; 2627 dp->d_name[1] = '\0'; 2628 dp->d_reclen = DIRENT_SIZE(dp) + NFSX_HYPER; 2629 /* 2630 * Just make these offset cookie 0. 2631 */ 2632 tl = (u_int32_t *)&dp->d_name[4]; 2633 *tl++ = 0; 2634 *tl = 0; 2635 blksiz += dp->d_reclen; 2636 uio_uio_resid_add(uiop, -(dp->d_reclen)); 2637 uiop->uio_offset += dp->d_reclen; 2638 uio_iov_base_add(uiop, dp->d_reclen); 2639 uio_iov_len_add(uiop, -(dp->d_reclen)); 2640 dp = (struct dirent *) CAST_DOWN(caddr_t, uio_iov_base(uiop)); 2641 dp->d_type = DT_DIR; 2642 dp->d_fileno = dotdotfileid; 2643 dp->d_namlen = 2; 2644 dp->d_name[0] = '.'; 2645 dp->d_name[1] = '.'; 2646 dp->d_name[2] = '\0'; 2647 dp->d_reclen = DIRENT_SIZE(dp) + NFSX_HYPER; 2648 /* 2649 * Just make these offset cookie 0. 2650 */ 2651 tl = (u_int32_t *)&dp->d_name[4]; 2652 *tl++ = 0; 2653 *tl = 0; 2654 blksiz += dp->d_reclen; 2655 uio_uio_resid_add(uiop, -(dp->d_reclen)); 2656 uiop->uio_offset += dp->d_reclen; 2657 uio_iov_base_add(uiop, dp->d_reclen); 2658 uio_iov_len_add(uiop, -(dp->d_reclen)); 2659 } 2660 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_RDATTRERROR); 2661 } else { 2662 reqsize = 5 * NFSX_UNSIGNED; 2663 } 2664 2665 2666 /* 2667 * Loop around doing readdir rpc's of size readsize. 2668 * The stopping criteria is EOF or buffer full. 2669 */ 2670 while (more_dirs && bigenough) { 2671 *attrflagp = 0; 2672 NFSCL_REQSTART(nd, NFSPROC_READDIR, vp); 2673 if (nd->nd_flag & ND_NFSV2) { 2674 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2675 *tl++ = cookie.lval[1]; 2676 *tl = txdr_unsigned(readsize); 2677 } else { 2678 NFSM_BUILD(tl, u_int32_t *, reqsize); 2679 *tl++ = cookie.lval[0]; 2680 *tl++ = cookie.lval[1]; 2681 if (cookie.qval == 0) { 2682 *tl++ = 0; 2683 *tl++ = 0; 2684 } else { 2685 NFSLOCKNODE(dnp); 2686 *tl++ = dnp->n_cookieverf.nfsuquad[0]; 2687 *tl++ = dnp->n_cookieverf.nfsuquad[1]; 2688 NFSUNLOCKNODE(dnp); 2689 } 2690 if (nd->nd_flag & ND_NFSV4) { 2691 *tl++ = txdr_unsigned(readsize); 2692 *tl = txdr_unsigned(readsize); 2693 (void) nfsrv_putattrbit(nd, &attrbits); 2694 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2695 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2696 (void) nfsrv_putattrbit(nd, &dattrbits); 2697 } else { 2698 *tl = txdr_unsigned(readsize); 2699 } 2700 } 2701 error = nfscl_request(nd, vp, p, cred, stuff); 2702 if (error) 2703 return (error); 2704 if (!(nd->nd_flag & ND_NFSV2)) { 2705 if (nd->nd_flag & ND_NFSV3) 2706 error = nfscl_postop_attr(nd, nap, attrflagp, 2707 stuff); 2708 if (!nd->nd_repstat && !error) { 2709 NFSM_DISSECT(tl, u_int32_t *, NFSX_HYPER); 2710 NFSLOCKNODE(dnp); 2711 dnp->n_cookieverf.nfsuquad[0] = *tl++; 2712 dnp->n_cookieverf.nfsuquad[1] = *tl; 2713 NFSUNLOCKNODE(dnp); 2714 } 2715 } 2716 if (nd->nd_repstat || error) { 2717 if (!error) 2718 error = nd->nd_repstat; 2719 goto nfsmout; 2720 } 2721 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2722 more_dirs = fxdr_unsigned(int, *tl); 2723 if (!more_dirs) 2724 tryformoredirs = 0; 2725 2726 /* loop thru the dir entries, doctoring them to 4bsd form */ 2727 while (more_dirs && bigenough) { 2728 if (nd->nd_flag & ND_NFSV4) { 2729 NFSM_DISSECT(tl, u_int32_t *, 3*NFSX_UNSIGNED); 2730 ncookie.lval[0] = *tl++; 2731 ncookie.lval[1] = *tl++; 2732 len = fxdr_unsigned(int, *tl); 2733 } else if (nd->nd_flag & ND_NFSV3) { 2734 NFSM_DISSECT(tl, u_int32_t *, 3*NFSX_UNSIGNED); 2735 nfsva.na_fileid = 2736 fxdr_unsigned(long, *++tl); 2737 len = fxdr_unsigned(int, *++tl); 2738 } else { 2739 NFSM_DISSECT(tl, u_int32_t *, 2*NFSX_UNSIGNED); 2740 nfsva.na_fileid = 2741 fxdr_unsigned(long, *tl++); 2742 len = fxdr_unsigned(int, *tl); 2743 } 2744 if (len <= 0 || len > NFS_MAXNAMLEN) { 2745 error = EBADRPC; 2746 goto nfsmout; 2747 } 2748 tlen = NFSM_RNDUP(len); 2749 if (tlen == len) 2750 tlen += 4; /* To ensure null termination */ 2751 left = DIRBLKSIZ - blksiz; 2752 if ((int)(tlen + DIRHDSIZ + NFSX_HYPER) > left) { 2753 dp->d_reclen += left; 2754 uio_iov_base_add(uiop, left); 2755 uio_iov_len_add(uiop, -(left)); 2756 uio_uio_resid_add(uiop, -(left)); 2757 uiop->uio_offset += left; 2758 blksiz = 0; 2759 } 2760 if ((int)(tlen + DIRHDSIZ + NFSX_HYPER) > uio_uio_resid(uiop)) 2761 bigenough = 0; 2762 if (bigenough) { 2763 dp = (struct dirent *) CAST_DOWN(caddr_t, uio_iov_base(uiop)); 2764 dp->d_namlen = len; 2765 dp->d_reclen = tlen + DIRHDSIZ + NFSX_HYPER; 2766 dp->d_type = DT_UNKNOWN; 2767 blksiz += dp->d_reclen; 2768 if (blksiz == DIRBLKSIZ) 2769 blksiz = 0; 2770 uio_uio_resid_add(uiop, -(DIRHDSIZ)); 2771 uiop->uio_offset += DIRHDSIZ; 2772 uio_iov_base_add(uiop, DIRHDSIZ); 2773 uio_iov_len_add(uiop, -(DIRHDSIZ)); 2774 error = nfsm_mbufuio(nd, uiop, len); 2775 if (error) 2776 goto nfsmout; 2777 cp = CAST_DOWN(caddr_t, uio_iov_base(uiop)); 2778 tlen -= len; 2779 *cp = '\0'; /* null terminate */ 2780 cp += tlen; /* points to cookie storage */ 2781 tl2 = (u_int32_t *)cp; 2782 uio_iov_base_add(uiop, (tlen + NFSX_HYPER)); 2783 uio_iov_len_add(uiop, -(tlen + NFSX_HYPER)); 2784 uio_uio_resid_add(uiop, -(tlen + NFSX_HYPER)); 2785 uiop->uio_offset += (tlen + NFSX_HYPER); 2786 } else { 2787 error = nfsm_advance(nd, NFSM_RNDUP(len), -1); 2788 if (error) 2789 goto nfsmout; 2790 } 2791 if (nd->nd_flag & ND_NFSV4) { 2792 rderr = 0; 2793 nfsva.na_mntonfileno = 0xffffffff; 2794 error = nfsv4_loadattr(nd, NULL, &nfsva, NULL, 2795 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0, 2796 NULL, NULL, &rderr, p, cred); 2797 if (error) 2798 goto nfsmout; 2799 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2800 } else if (nd->nd_flag & ND_NFSV3) { 2801 NFSM_DISSECT(tl, u_int32_t *, 3*NFSX_UNSIGNED); 2802 ncookie.lval[0] = *tl++; 2803 ncookie.lval[1] = *tl++; 2804 } else { 2805 NFSM_DISSECT(tl, u_int32_t *, 2*NFSX_UNSIGNED); 2806 ncookie.lval[0] = 0; 2807 ncookie.lval[1] = *tl++; 2808 } 2809 if (bigenough) { 2810 if (nd->nd_flag & ND_NFSV4) { 2811 if (rderr) { 2812 dp->d_fileno = 0; 2813 } else { 2814 if (gotmnton) { 2815 if (nfsva.na_mntonfileno != 0xffffffff) 2816 dp->d_fileno = nfsva.na_mntonfileno; 2817 else 2818 dp->d_fileno = nfsva.na_fileid; 2819 } else if (nfsva.na_filesid[0] == 2820 dnp->n_vattr.na_filesid[0] && 2821 nfsva.na_filesid[1] == 2822 dnp->n_vattr.na_filesid[1]) { 2823 dp->d_fileno = nfsva.na_fileid; 2824 } else { 2825 do { 2826 fakefileno--; 2827 } while (fakefileno == 2828 nfsva.na_fileid); 2829 dp->d_fileno = fakefileno; 2830 } 2831 dp->d_type = vtonfs_dtype(nfsva.na_type); 2832 } 2833 } else { 2834 dp->d_fileno = nfsva.na_fileid; 2835 } 2836 *tl2++ = cookiep->nfsuquad[0] = cookie.lval[0] = 2837 ncookie.lval[0]; 2838 *tl2 = cookiep->nfsuquad[1] = cookie.lval[1] = 2839 ncookie.lval[1]; 2840 } 2841 more_dirs = fxdr_unsigned(int, *tl); 2842 } 2843 /* 2844 * If at end of rpc data, get the eof boolean 2845 */ 2846 if (!more_dirs) { 2847 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2848 eof = fxdr_unsigned(int, *tl); 2849 if (tryformoredirs) 2850 more_dirs = !eof; 2851 if (nd->nd_flag & ND_NFSV4) { 2852 error = nfscl_postop_attr(nd, nap, attrflagp, 2853 stuff); 2854 if (error) 2855 goto nfsmout; 2856 } 2857 } 2858 mbuf_freem(nd->nd_mrep); 2859 nd->nd_mrep = NULL; 2860 } 2861 /* 2862 * Fill last record, iff any, out to a multiple of DIRBLKSIZ 2863 * by increasing d_reclen for the last record. 2864 */ 2865 if (blksiz > 0) { 2866 left = DIRBLKSIZ - blksiz; 2867 dp->d_reclen += left; 2868 uio_iov_base_add(uiop, left); 2869 uio_iov_len_add(uiop, -(left)); 2870 uio_uio_resid_add(uiop, -(left)); 2871 uiop->uio_offset += left; 2872 } 2873 2874 /* 2875 * If returning no data, assume end of file. 2876 * If not bigenough, return not end of file, since you aren't 2877 * returning all the data 2878 * Otherwise, return the eof flag from the server. 2879 */ 2880 if (eofp) { 2881 if (tresid == ((size_t)(uio_uio_resid(uiop)))) 2882 *eofp = 1; 2883 else if (!bigenough) 2884 *eofp = 0; 2885 else 2886 *eofp = eof; 2887 } 2888 2889 /* 2890 * Add extra empty records to any remaining DIRBLKSIZ chunks. 2891 */ 2892 while (uio_uio_resid(uiop) > 0 && ((size_t)(uio_uio_resid(uiop))) != tresid) { 2893 dp = (struct dirent *) CAST_DOWN(caddr_t, uio_iov_base(uiop)); 2894 dp->d_type = DT_UNKNOWN; 2895 dp->d_fileno = 0; 2896 dp->d_namlen = 0; 2897 dp->d_name[0] = '\0'; 2898 tl = (u_int32_t *)&dp->d_name[4]; 2899 *tl++ = cookie.lval[0]; 2900 *tl = cookie.lval[1]; 2901 dp->d_reclen = DIRBLKSIZ; 2902 uio_iov_base_add(uiop, DIRBLKSIZ); 2903 uio_iov_len_add(uiop, -(DIRBLKSIZ)); 2904 uio_uio_resid_add(uiop, -(DIRBLKSIZ)); 2905 uiop->uio_offset += DIRBLKSIZ; 2906 } 2907 2908nfsmout: 2909 if (nd->nd_mrep != NULL) 2910 mbuf_freem(nd->nd_mrep); 2911 return (error); 2912} 2913 2914#ifndef APPLE 2915/* 2916 * NFS V3 readdir plus RPC. Used in place of nfsrpc_readdir(). 2917 * (Also used for NFS V4 when mount flag set.) 2918 * (ditto above w.r.t. multiple of DIRBLKSIZ, etc.) 2919 */ 2920APPLESTATIC int 2921nfsrpc_readdirplus(vnode_t vp, struct uio *uiop, nfsuint64 *cookiep, 2922 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, 2923 int *eofp, void *stuff) 2924{ 2925 int len, left; 2926 struct dirent *dp = NULL; 2927 u_int32_t *tl; 2928 vnode_t newvp = NULLVP; 2929 struct nfsrv_descript nfsd, *nd = &nfsd; 2930 struct nameidata nami, *ndp = &nami; 2931 struct componentname *cnp = &ndp->ni_cnd; 2932 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 2933 struct nfsnode *dnp = VTONFS(vp), *np; 2934 struct nfsvattr nfsva; 2935 struct nfsfh *nfhp; 2936 nfsquad_t cookie, ncookie; 2937 int error = 0, tlen, more_dirs = 1, blksiz = 0, bigenough = 1; 2938 int attrflag, tryformoredirs = 1, eof = 0, gotmnton = 0; 2939 int unlocknewvp = 0; 2940 long dotfileid, dotdotfileid = 0, fileno = 0; 2941 char *cp; 2942 nfsattrbit_t attrbits, dattrbits; 2943 size_t tresid; 2944 u_int32_t *tl2 = NULL, fakefileno = 0xffffffff, rderr; 2945 2946#ifdef DIAGNOSTIC 2947 if (uiop->uio_iovcnt != 1 || (uio_uio_resid(uiop) & (DIRBLKSIZ - 1))) 2948 panic("nfs readdirplusrpc bad uio"); 2949#endif 2950 *attrflagp = 0; 2951 if (eofp != NULL) 2952 *eofp = 0; 2953 ndp->ni_dvp = vp; 2954 nd->nd_mrep = NULL; 2955 cookie.lval[0] = cookiep->nfsuquad[0]; 2956 cookie.lval[1] = cookiep->nfsuquad[1]; 2957 tresid = uio_uio_resid(uiop); 2958 2959 /* 2960 * For NFSv4, first create the "." and ".." entries. 2961 */ 2962 if (NFSHASNFSV4(nmp)) { 2963 NFSGETATTR_ATTRBIT(&dattrbits); 2964 NFSZERO_ATTRBIT(&attrbits); 2965 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_FILEID); 2966 if (NFSISSET_ATTRBIT(&dnp->n_vattr.na_suppattr, 2967 NFSATTRBIT_MOUNTEDONFILEID)) { 2968 NFSSETBIT_ATTRBIT(&attrbits, 2969 NFSATTRBIT_MOUNTEDONFILEID); 2970 gotmnton = 1; 2971 } else { 2972 /* 2973 * Must fake it. Use the fileno, except when the 2974 * fsid is != to that of the directory. For that 2975 * case, generate a fake fileno that is not the same. 2976 */ 2977 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_FSID); 2978 gotmnton = 0; 2979 } 2980 2981 /* 2982 * Joy, oh joy. For V4 we get to hand craft '.' and '..'. 2983 */ 2984 if (uiop->uio_offset == 0) { 2985#if defined(__FreeBSD_version) && __FreeBSD_version >= 800000 2986 error = VOP_GETATTR(vp, &nfsva.na_vattr, cred); 2987#else 2988 error = VOP_GETATTR(vp, &nfsva.na_vattr, cred, p); 2989#endif 2990 if (error) 2991 return (error); 2992 dotfileid = nfsva.na_fileid; 2993 NFSCL_REQSTART(nd, NFSPROC_LOOKUPP, vp); 2994 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2995 *tl++ = txdr_unsigned(NFSV4OP_GETFH); 2996 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2997 (void) nfsrv_putattrbit(nd, &attrbits); 2998 error = nfscl_request(nd, vp, p, cred, stuff); 2999 if (error) 3000 return (error); 3001 if (nd->nd_repstat == 0) { 3002 NFSM_DISSECT(tl, u_int32_t *, 3*NFSX_UNSIGNED); 3003 len = fxdr_unsigned(int, *(tl + 2)); 3004 if (len > 0 && len <= NFSX_V4FHMAX) 3005 error = nfsm_advance(nd, NFSM_RNDUP(len), -1); 3006 else 3007 error = EPERM; 3008 if (!error) { 3009 NFSM_DISSECT(tl, u_int32_t *, 2*NFSX_UNSIGNED); 3010 nfsva.na_mntonfileno = 0xffffffff; 3011 error = nfsv4_loadattr(nd, NULL, &nfsva, NULL, 3012 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0, 3013 NULL, NULL, NULL, p, cred); 3014 if (error) { 3015 dotdotfileid = dotfileid; 3016 } else if (gotmnton) { 3017 if (nfsva.na_mntonfileno != 0xffffffff) 3018 dotdotfileid = nfsva.na_mntonfileno; 3019 else 3020 dotdotfileid = nfsva.na_fileid; 3021 } else if (nfsva.na_filesid[0] == 3022 dnp->n_vattr.na_filesid[0] && 3023 nfsva.na_filesid[1] == 3024 dnp->n_vattr.na_filesid[1]) { 3025 dotdotfileid = nfsva.na_fileid; 3026 } else { 3027 do { 3028 fakefileno--; 3029 } while (fakefileno == 3030 nfsva.na_fileid); 3031 dotdotfileid = fakefileno; 3032 } 3033 } 3034 } else if (nd->nd_repstat == NFSERR_NOENT) { 3035 /* 3036 * Lookupp returns NFSERR_NOENT when we are 3037 * at the root, so just use the current dir. 3038 */ 3039 nd->nd_repstat = 0; 3040 dotdotfileid = dotfileid; 3041 } else { 3042 error = nd->nd_repstat; 3043 } 3044 mbuf_freem(nd->nd_mrep); 3045 if (error) 3046 return (error); 3047 nd->nd_mrep = NULL; 3048 dp = (struct dirent *)uio_iov_base(uiop); 3049 dp->d_type = DT_DIR; 3050 dp->d_fileno = dotfileid; 3051 dp->d_namlen = 1; 3052 dp->d_name[0] = '.'; 3053 dp->d_name[1] = '\0'; 3054 dp->d_reclen = DIRENT_SIZE(dp) + NFSX_HYPER; 3055 /* 3056 * Just make these offset cookie 0. 3057 */ 3058 tl = (u_int32_t *)&dp->d_name[4]; 3059 *tl++ = 0; 3060 *tl = 0; 3061 blksiz += dp->d_reclen; 3062 uio_uio_resid_add(uiop, -(dp->d_reclen)); 3063 uiop->uio_offset += dp->d_reclen; 3064 uio_iov_base_add(uiop, dp->d_reclen); 3065 uio_iov_len_add(uiop, -(dp->d_reclen)); 3066 dp = (struct dirent *)uio_iov_base(uiop); 3067 dp->d_type = DT_DIR; 3068 dp->d_fileno = dotdotfileid; 3069 dp->d_namlen = 2; 3070 dp->d_name[0] = '.'; 3071 dp->d_name[1] = '.'; 3072 dp->d_name[2] = '\0'; 3073 dp->d_reclen = DIRENT_SIZE(dp) + NFSX_HYPER; 3074 /* 3075 * Just make these offset cookie 0. 3076 */ 3077 tl = (u_int32_t *)&dp->d_name[4]; 3078 *tl++ = 0; 3079 *tl = 0; 3080 blksiz += dp->d_reclen; 3081 uio_uio_resid_add(uiop, -(dp->d_reclen)); 3082 uiop->uio_offset += dp->d_reclen; 3083 uio_iov_base_add(uiop, dp->d_reclen); 3084 uio_iov_len_add(uiop, -(dp->d_reclen)); 3085 } 3086 NFSREADDIRPLUS_ATTRBIT(&attrbits); 3087 if (gotmnton) 3088 NFSSETBIT_ATTRBIT(&attrbits, 3089 NFSATTRBIT_MOUNTEDONFILEID); 3090 } 3091 3092 /* 3093 * Loop around doing readdir rpc's of size nm_readdirsize. 3094 * The stopping criteria is EOF or buffer full. 3095 */ 3096 while (more_dirs && bigenough) { 3097 *attrflagp = 0; 3098 NFSCL_REQSTART(nd, NFSPROC_READDIRPLUS, vp); 3099 NFSM_BUILD(tl, u_int32_t *, 6 * NFSX_UNSIGNED); 3100 *tl++ = cookie.lval[0]; 3101 *tl++ = cookie.lval[1]; 3102 if (cookie.qval == 0) { 3103 *tl++ = 0; 3104 *tl++ = 0; 3105 } else { 3106 NFSLOCKNODE(dnp); 3107 *tl++ = dnp->n_cookieverf.nfsuquad[0]; 3108 *tl++ = dnp->n_cookieverf.nfsuquad[1]; 3109 NFSUNLOCKNODE(dnp); 3110 } 3111 *tl++ = txdr_unsigned(nmp->nm_readdirsize); 3112 *tl = txdr_unsigned(nmp->nm_readdirsize); 3113 if (nd->nd_flag & ND_NFSV4) { 3114 (void) nfsrv_putattrbit(nd, &attrbits); 3115 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 3116 *tl = txdr_unsigned(NFSV4OP_GETATTR); 3117 (void) nfsrv_putattrbit(nd, &dattrbits); 3118 } 3119 error = nfscl_request(nd, vp, p, cred, stuff); 3120 if (error) 3121 return (error); 3122 if (nd->nd_flag & ND_NFSV3) 3123 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 3124 if (nd->nd_repstat || error) { 3125 if (!error) 3126 error = nd->nd_repstat; 3127 goto nfsmout; 3128 } 3129 NFSM_DISSECT(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 3130 NFSLOCKNODE(dnp); 3131 dnp->n_cookieverf.nfsuquad[0] = *tl++; 3132 dnp->n_cookieverf.nfsuquad[1] = *tl++; 3133 NFSUNLOCKNODE(dnp); 3134 more_dirs = fxdr_unsigned(int, *tl); 3135 if (!more_dirs) 3136 tryformoredirs = 0; 3137 3138 /* loop thru the dir entries, doctoring them to 4bsd form */ 3139 while (more_dirs && bigenough) { 3140 NFSM_DISSECT(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 3141 if (nd->nd_flag & ND_NFSV4) { 3142 ncookie.lval[0] = *tl++; 3143 ncookie.lval[1] = *tl++; 3144 } else { 3145 fileno = fxdr_unsigned(long, *++tl); 3146 tl++; 3147 } 3148 len = fxdr_unsigned(int, *tl); 3149 if (len <= 0 || len > NFS_MAXNAMLEN) { 3150 error = EBADRPC; 3151 goto nfsmout; 3152 } 3153 tlen = NFSM_RNDUP(len); 3154 if (tlen == len) 3155 tlen += 4; /* To ensure null termination */ 3156 left = DIRBLKSIZ - blksiz; 3157 if ((tlen + DIRHDSIZ + NFSX_HYPER) > left) { 3158 dp->d_reclen += left; 3159 uio_iov_base_add(uiop, left); 3160 uio_iov_len_add(uiop, -(left)); 3161 uio_uio_resid_add(uiop, -(left)); 3162 uiop->uio_offset += left; 3163 blksiz = 0; 3164 } 3165 if ((tlen + DIRHDSIZ + NFSX_HYPER) > uio_uio_resid(uiop)) 3166 bigenough = 0; 3167 if (bigenough) { 3168 dp = (struct dirent *)uio_iov_base(uiop); 3169 dp->d_namlen = len; 3170 dp->d_reclen = tlen + DIRHDSIZ + NFSX_HYPER; 3171 dp->d_type = DT_UNKNOWN; 3172 blksiz += dp->d_reclen; 3173 if (blksiz == DIRBLKSIZ) 3174 blksiz = 0; 3175 uio_uio_resid_add(uiop, -(DIRHDSIZ)); 3176 uiop->uio_offset += DIRHDSIZ; 3177 uio_iov_base_add(uiop, DIRHDSIZ); 3178 uio_iov_len_add(uiop, -(DIRHDSIZ)); 3179 cnp->cn_nameptr = uio_iov_base(uiop); 3180 cnp->cn_namelen = len; 3181 NFSCNHASHZERO(cnp); 3182 error = nfsm_mbufuio(nd, uiop, len); 3183 if (error) 3184 goto nfsmout; 3185 cp = uio_iov_base(uiop); 3186 tlen -= len; 3187 *cp = '\0'; 3188 cp += tlen; /* points to cookie storage */ 3189 tl2 = (u_int32_t *)cp; 3190 uio_iov_base_add(uiop, (tlen + NFSX_HYPER)); 3191 uio_iov_len_add(uiop, -(tlen + NFSX_HYPER)); 3192 uio_uio_resid_add(uiop, -(tlen + NFSX_HYPER)); 3193 uiop->uio_offset += (tlen + NFSX_HYPER); 3194 } else { 3195 error = nfsm_advance(nd, NFSM_RNDUP(len), -1); 3196 if (error) 3197 goto nfsmout; 3198 } 3199 nfhp = NULL; 3200 if (nd->nd_flag & ND_NFSV3) { 3201 NFSM_DISSECT(tl, u_int32_t *, 3*NFSX_UNSIGNED); 3202 ncookie.lval[0] = *tl++; 3203 ncookie.lval[1] = *tl++; 3204 attrflag = fxdr_unsigned(int, *tl); 3205 if (attrflag) { 3206 error = nfsm_loadattr(nd, &nfsva); 3207 if (error) 3208 goto nfsmout; 3209 } 3210 NFSM_DISSECT(tl,u_int32_t *,NFSX_UNSIGNED); 3211 if (*tl) { 3212 error = nfsm_getfh(nd, &nfhp); 3213 if (error) 3214 goto nfsmout; 3215 } 3216 if (!attrflag && nfhp != NULL) { 3217 FREE((caddr_t)nfhp, M_NFSFH); 3218 nfhp = NULL; 3219 } 3220 } else { 3221 rderr = 0; 3222 nfsva.na_mntonfileno = 0xffffffff; 3223 error = nfsv4_loadattr(nd, NULL, &nfsva, &nfhp, 3224 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0, 3225 NULL, NULL, &rderr, p, cred); 3226 if (error) 3227 goto nfsmout; 3228 } 3229 3230 if (bigenough) { 3231 if (nd->nd_flag & ND_NFSV4) { 3232 if (rderr) { 3233 dp->d_fileno = 0; 3234 } else if (gotmnton) { 3235 if (nfsva.na_mntonfileno != 0xffffffff) 3236 dp->d_fileno = nfsva.na_mntonfileno; 3237 else 3238 dp->d_fileno = nfsva.na_fileid; 3239 } else if (nfsva.na_filesid[0] == 3240 dnp->n_vattr.na_filesid[0] && 3241 nfsva.na_filesid[1] == 3242 dnp->n_vattr.na_filesid[1]) { 3243 dp->d_fileno = nfsva.na_fileid; 3244 } else { 3245 do { 3246 fakefileno--; 3247 } while (fakefileno == 3248 nfsva.na_fileid); 3249 dp->d_fileno = fakefileno; 3250 } 3251 } else { 3252 dp->d_fileno = fileno; 3253 } 3254 *tl2++ = cookiep->nfsuquad[0] = cookie.lval[0] = 3255 ncookie.lval[0]; 3256 *tl2 = cookiep->nfsuquad[1] = cookie.lval[1] = 3257 ncookie.lval[1]; 3258 3259 if (nfhp != NULL) { 3260 if (NFSRV_CMPFH(nfhp->nfh_fh, nfhp->nfh_len, 3261 dnp->n_fhp->nfh_fh, dnp->n_fhp->nfh_len)) { 3262 VREF(vp); 3263 newvp = vp; 3264 unlocknewvp = 0; 3265 FREE((caddr_t)nfhp, M_NFSFH); 3266 np = dnp; 3267 } else { 3268 error = nfscl_nget(vnode_mount(vp), vp, 3269 nfhp, cnp, p, &np, NULL); 3270 if (!error) { 3271 newvp = NFSTOV(np); 3272 unlocknewvp = 1; 3273 } 3274 } 3275 nfhp = NULL; 3276 if (newvp != NULLVP) { 3277 error = nfscl_loadattrcache(&newvp, 3278 &nfsva, NULL, NULL, 0, 0); 3279 if (error) { 3280 if (unlocknewvp) 3281 vput(newvp); 3282 else 3283 vrele(newvp); 3284 goto nfsmout; 3285 } 3286 dp->d_type = 3287 vtonfs_dtype(np->n_vattr.na_type); 3288 ndp->ni_vp = newvp; 3289 NFSCNHASH(cnp, HASHINIT); 3290 if (cnp->cn_namelen <= NCHNAMLEN) { 3291 np->n_ctime = 3292 np->n_vattr.na_ctime.tv_sec; 3293 cache_enter(ndp->ni_dvp,ndp->ni_vp,cnp); 3294 } 3295 if (unlocknewvp) 3296 vput(newvp); 3297 else 3298 vrele(newvp); 3299 newvp = NULLVP; 3300 } 3301 } 3302 } else if (nfhp != NULL) { 3303 FREE((caddr_t)nfhp, M_NFSFH); 3304 } 3305 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 3306 more_dirs = fxdr_unsigned(int, *tl); 3307 } 3308 /* 3309 * If at end of rpc data, get the eof boolean 3310 */ 3311 if (!more_dirs) { 3312 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 3313 eof = fxdr_unsigned(int, *tl); 3314 if (tryformoredirs) 3315 more_dirs = !eof; 3316 if (nd->nd_flag & ND_NFSV4) { 3317 error = nfscl_postop_attr(nd, nap, attrflagp, 3318 stuff); 3319 if (error) 3320 goto nfsmout; 3321 } 3322 } 3323 mbuf_freem(nd->nd_mrep); 3324 nd->nd_mrep = NULL; 3325 } 3326 /* 3327 * Fill last record, iff any, out to a multiple of DIRBLKSIZ 3328 * by increasing d_reclen for the last record. 3329 */ 3330 if (blksiz > 0) { 3331 left = DIRBLKSIZ - blksiz; 3332 dp->d_reclen += left; 3333 uio_iov_base_add(uiop, left); 3334 uio_iov_len_add(uiop, -(left)); 3335 uio_uio_resid_add(uiop, -(left)); 3336 uiop->uio_offset += left; 3337 } 3338 3339 /* 3340 * If returning no data, assume end of file. 3341 * If not bigenough, return not end of file, since you aren't 3342 * returning all the data 3343 * Otherwise, return the eof flag from the server. 3344 */ 3345 if (eofp != NULL) { 3346 if (tresid == uio_uio_resid(uiop)) 3347 *eofp = 1; 3348 else if (!bigenough) 3349 *eofp = 0; 3350 else 3351 *eofp = eof; 3352 } 3353 3354 /* 3355 * Add extra empty records to any remaining DIRBLKSIZ chunks. 3356 */ 3357 while (uio_uio_resid(uiop) > 0 && uio_uio_resid(uiop) != tresid) { 3358 dp = (struct dirent *)uio_iov_base(uiop); 3359 dp->d_type = DT_UNKNOWN; 3360 dp->d_fileno = 0; 3361 dp->d_namlen = 0; 3362 dp->d_name[0] = '\0'; 3363 tl = (u_int32_t *)&dp->d_name[4]; 3364 *tl++ = cookie.lval[0]; 3365 *tl = cookie.lval[1]; 3366 dp->d_reclen = DIRBLKSIZ; 3367 uio_iov_base_add(uiop, DIRBLKSIZ); 3368 uio_iov_len_add(uiop, -(DIRBLKSIZ)); 3369 uio_uio_resid_add(uiop, -(DIRBLKSIZ)); 3370 uiop->uio_offset += DIRBLKSIZ; 3371 } 3372 3373nfsmout: 3374 if (nd->nd_mrep != NULL) 3375 mbuf_freem(nd->nd_mrep); 3376 return (error); 3377} 3378#endif /* !APPLE */ 3379 3380/* 3381 * Nfs commit rpc 3382 */ 3383APPLESTATIC int 3384nfsrpc_commit(vnode_t vp, u_quad_t offset, int cnt, struct ucred *cred, 3385 NFSPROC_T *p, u_char *verfp, struct nfsvattr *nap, int *attrflagp, 3386 void *stuff) 3387{ 3388 u_int32_t *tl; 3389 struct nfsrv_descript nfsd, *nd = &nfsd; 3390 nfsattrbit_t attrbits; 3391 int error; 3392 3393 *attrflagp = 0; 3394 NFSCL_REQSTART(nd, NFSPROC_COMMIT, vp); 3395 NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 3396 txdr_hyper(offset, tl); 3397 tl += 2; 3398 *tl = txdr_unsigned(cnt); 3399 if (nd->nd_flag & ND_NFSV4) { 3400 /* 3401 * And do a Getattr op. 3402 */ 3403 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 3404 *tl = txdr_unsigned(NFSV4OP_GETATTR); 3405 NFSGETATTR_ATTRBIT(&attrbits); 3406 (void) nfsrv_putattrbit(nd, &attrbits); 3407 } 3408 error = nfscl_request(nd, vp, p, cred, stuff); 3409 if (error) 3410 return (error); 3411 error = nfscl_wcc_data(nd, vp, nap, attrflagp, NULL, stuff); 3412 if (!error && !nd->nd_repstat) { 3413 NFSM_DISSECT(tl, u_int32_t *, NFSX_VERF); 3414 NFSBCOPY((caddr_t)tl, verfp, NFSX_VERF); 3415 if (nd->nd_flag & ND_NFSV4) 3416 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 3417 } 3418nfsmout: 3419 if (!error && nd->nd_repstat) 3420 error = nd->nd_repstat; 3421 mbuf_freem(nd->nd_mrep); 3422 return (error); 3423} 3424 3425/* 3426 * NFS byte range lock rpc. 3427 * (Mostly just calls one of the three lower level RPC routines.) 3428 */ 3429APPLESTATIC int 3430nfsrpc_advlock(vnode_t vp, off_t size, int op, struct flock *fl, 3431 int reclaim, struct ucred *cred, NFSPROC_T *p) 3432{ 3433 struct nfscllockowner *lp; 3434 struct nfsclclient *clp; 3435 struct nfsfh *nfhp; 3436 struct nfsrv_descript nfsd, *nd = &nfsd; 3437 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 3438 u_int64_t off, len; 3439 off_t start, end; 3440 u_int32_t clidrev = 0; 3441 int error = 0, newone = 0, expireret = 0, retrycnt, donelocally; 3442 int callcnt, dorpc; 3443 3444 /* 3445 * Convert the flock structure into a start and end and do POSIX 3446 * bounds checking. 3447 */ 3448 switch (fl->l_whence) { 3449 case SEEK_SET: 3450 case SEEK_CUR: 3451 /* 3452 * Caller is responsible for adding any necessary offset 3453 * when SEEK_CUR is used. 3454 */ 3455 start = fl->l_start; 3456 off = fl->l_start; 3457 break; 3458 case SEEK_END: 3459 start = size + fl->l_start; 3460 off = size + fl->l_start; 3461 break; 3462 default: 3463 return (EINVAL); 3464 }; 3465 if (start < 0) 3466 return (EINVAL); 3467 if (fl->l_len != 0) { 3468 end = start + fl->l_len - 1; 3469 if (end < start) 3470 return (EINVAL); 3471 } 3472 3473 len = fl->l_len; 3474 if (len == 0) 3475 len = NFS64BITSSET; 3476 retrycnt = 0; 3477 do { 3478 nd->nd_repstat = 0; 3479 if (op == F_GETLK) { 3480 error = nfscl_getcl(vp, cred, p, &clp); 3481 if (error) 3482 return (error); 3483 error = nfscl_lockt(vp, clp, off, len, fl, p); 3484 if (!error) { 3485 clidrev = clp->nfsc_clientidrev; 3486 error = nfsrpc_lockt(nd, vp, clp, off, len, fl, cred, 3487 p); 3488 } else if (error == -1) { 3489 error = 0; 3490 } 3491 nfscl_clientrelease(clp); 3492 } else if (op == F_UNLCK && fl->l_type == F_UNLCK) { 3493 /* 3494 * We must loop around for all lockowner cases. 3495 */ 3496 callcnt = 0; 3497 error = nfscl_getcl(vp, cred, p, &clp); 3498 if (error) 3499 return (error); 3500 do { 3501 error = nfscl_relbytelock(vp, off, len, cred, p, callcnt, 3502 clp, &lp, &dorpc); 3503 /* 3504 * If it returns a NULL lp, we're done. 3505 */ 3506 if (lp == NULL) { 3507 if (callcnt == 0) 3508 nfscl_clientrelease(clp); 3509 else 3510 nfscl_releasealllocks(clp, vp, p); 3511 return (error); 3512 } 3513 if (nmp->nm_clp != NULL) 3514 clidrev = nmp->nm_clp->nfsc_clientidrev; 3515 else 3516 clidrev = 0; 3517 /* 3518 * If the server doesn't support Posix lock semantics, 3519 * only allow locks on the entire file, since it won't 3520 * handle overlapping byte ranges. 3521 * There might still be a problem when a lock 3522 * upgrade/downgrade (read<->write) occurs, since the 3523 * server "might" expect an unlock first? 3524 */ 3525 if (dorpc && (lp->nfsl_open->nfso_posixlock || 3526 (off == 0 && len == NFS64BITSSET))) { 3527 /* 3528 * Since the lock records will go away, we must 3529 * wait for grace and delay here. 3530 */ 3531 do { 3532 error = nfsrpc_locku(nd, nmp, lp, off, len, 3533 NFSV4LOCKT_READ, cred, p, 0); 3534 if ((nd->nd_repstat == NFSERR_GRACE || 3535 nd->nd_repstat == NFSERR_DELAY) && 3536 error == 0) 3537 (void) nfs_catnap(PZERO, (int)nd->nd_repstat, 3538 "nfs_advlock"); 3539 } while ((nd->nd_repstat == NFSERR_GRACE || 3540 nd->nd_repstat == NFSERR_DELAY) && error == 0); 3541 } 3542 callcnt++; 3543 } while (error == 0 && nd->nd_repstat == 0); 3544 nfscl_releasealllocks(clp, vp, p); 3545 } else if (op == F_SETLK) { 3546 error = nfscl_getbytelock(vp, off, len, fl->l_type, cred, p, 3547 NULL, 0, NULL, NULL, &lp, &newone, &donelocally); 3548 if (error || donelocally) { 3549 return (error); 3550 } 3551 if (nmp->nm_clp != NULL) 3552 clidrev = nmp->nm_clp->nfsc_clientidrev; 3553 else 3554 clidrev = 0; 3555 nfhp = VTONFS(vp)->n_fhp; 3556 if (!lp->nfsl_open->nfso_posixlock && 3557 (off != 0 || len != NFS64BITSSET)) { 3558 error = EINVAL; 3559 } else { 3560 error = nfsrpc_lock(nd, nmp, vp, nfhp->nfh_fh, 3561 nfhp->nfh_len, lp, newone, reclaim, off, 3562 len, fl->l_type, cred, p, 0); 3563 } 3564 if (!error) 3565 error = nd->nd_repstat; 3566 nfscl_lockrelease(lp, error, newone); 3567 } else { 3568 error = EINVAL; 3569 } 3570 if (!error) 3571 error = nd->nd_repstat; 3572 if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 3573 error == NFSERR_STALEDONTRECOVER || 3574 error == NFSERR_STALECLIENTID || error == NFSERR_DELAY) { 3575 (void) nfs_catnap(PZERO, error, "nfs_advlock"); 3576 } else if ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) 3577 && clidrev != 0) { 3578 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p); 3579 retrycnt++; 3580 } 3581 } while (error == NFSERR_GRACE || 3582 error == NFSERR_STALECLIENTID || error == NFSERR_DELAY || 3583 error == NFSERR_STALEDONTRECOVER || error == NFSERR_STALESTATEID || 3584 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) && 3585 expireret == 0 && clidrev != 0 && retrycnt < 4)); 3586 if (error && retrycnt >= 4) 3587 error = EIO; 3588 return (error); 3589} 3590 3591/* 3592 * The lower level routine for the LockT case. 3593 */ 3594APPLESTATIC int 3595nfsrpc_lockt(struct nfsrv_descript *nd, vnode_t vp, 3596 struct nfsclclient *clp, u_int64_t off, u_int64_t len, struct flock *fl, 3597 struct ucred *cred, NFSPROC_T *p) 3598{ 3599 u_int32_t *tl; 3600 int error, type, size; 3601 u_int8_t own[NFSV4CL_LOCKNAMELEN]; 3602 3603 NFSCL_REQSTART(nd, NFSPROC_LOCKT, vp); 3604 NFSM_BUILD(tl, u_int32_t *, 7 * NFSX_UNSIGNED); 3605 if (fl->l_type == F_RDLCK) 3606 *tl++ = txdr_unsigned(NFSV4LOCKT_READ); 3607 else 3608 *tl++ = txdr_unsigned(NFSV4LOCKT_WRITE); 3609 txdr_hyper(off, tl); 3610 tl += 2; 3611 txdr_hyper(len, tl); 3612 tl += 2; 3613 *tl++ = clp->nfsc_clientid.lval[0]; 3614 *tl = clp->nfsc_clientid.lval[1]; 3615 nfscl_filllockowner(p, own); 3616 (void) nfsm_strtom(nd, own, NFSV4CL_LOCKNAMELEN); 3617 error = nfscl_request(nd, vp, p, cred, NULL); 3618 if (error) 3619 return (error); 3620 if (nd->nd_repstat == 0) { 3621 fl->l_type = F_UNLCK; 3622 } else if (nd->nd_repstat == NFSERR_DENIED) { 3623 nd->nd_repstat = 0; 3624 fl->l_whence = SEEK_SET; 3625 NFSM_DISSECT(tl, u_int32_t *, 8 * NFSX_UNSIGNED); 3626 fl->l_start = fxdr_hyper(tl); 3627 tl += 2; 3628 len = fxdr_hyper(tl); 3629 tl += 2; 3630 if (len == NFS64BITSSET) 3631 fl->l_len = 0; 3632 else 3633 fl->l_len = len; 3634 type = fxdr_unsigned(int, *tl++); 3635 if (type == NFSV4LOCKT_WRITE) 3636 fl->l_type = F_WRLCK; 3637 else 3638 fl->l_type = F_RDLCK; 3639 /* 3640 * XXX For now, I have no idea what to do with the 3641 * conflicting lock_owner, so I'll just set the pid == 0 3642 * and skip over the lock_owner. 3643 */ 3644 fl->l_pid = (pid_t)0; 3645 tl += 2; 3646 size = fxdr_unsigned(int, *tl); 3647 if (size < 0 || size > NFSV4_OPAQUELIMIT) 3648 error = EBADRPC; 3649 if (!error) 3650 error = nfsm_advance(nd, NFSM_RNDUP(size), -1); 3651 } else if (nd->nd_repstat == NFSERR_STALECLIENTID) 3652 nfscl_initiate_recovery(clp); 3653nfsmout: 3654 mbuf_freem(nd->nd_mrep); 3655 return (error); 3656} 3657 3658/* 3659 * Lower level function that performs the LockU RPC. 3660 */ 3661static int 3662nfsrpc_locku(struct nfsrv_descript *nd, struct nfsmount *nmp, 3663 struct nfscllockowner *lp, u_int64_t off, u_int64_t len, 3664 u_int32_t type, struct ucred *cred, NFSPROC_T *p, int syscred) 3665{ 3666 u_int32_t *tl; 3667 int error; 3668 3669 nfscl_reqstart(nd, NFSPROC_LOCKU, nmp, lp->nfsl_open->nfso_fh, 3670 lp->nfsl_open->nfso_fhlen, NULL); 3671 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID + 6 * NFSX_UNSIGNED); 3672 *tl++ = txdr_unsigned(type); 3673 *tl = txdr_unsigned(lp->nfsl_seqid); 3674 if (nfstest_outofseq && 3675 (arc4random() % nfstest_outofseq) == 0) 3676 *tl = txdr_unsigned(lp->nfsl_seqid + 1); 3677 tl++; 3678 *tl++ = lp->nfsl_stateid.seqid; 3679 *tl++ = lp->nfsl_stateid.other[0]; 3680 *tl++ = lp->nfsl_stateid.other[1]; 3681 *tl++ = lp->nfsl_stateid.other[2]; 3682 txdr_hyper(off, tl); 3683 tl += 2; 3684 txdr_hyper(len, tl); 3685 if (syscred) 3686 nd->nd_flag |= ND_USEGSSNAME; 3687 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 3688 NFS_PROG, NFS_VER4, NULL, 1, NULL); 3689 NFSCL_INCRSEQID(lp->nfsl_seqid, nd); 3690 if (error) 3691 return (error); 3692 if (nd->nd_repstat == 0) { 3693 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID); 3694 lp->nfsl_stateid.seqid = *tl++; 3695 lp->nfsl_stateid.other[0] = *tl++; 3696 lp->nfsl_stateid.other[1] = *tl++; 3697 lp->nfsl_stateid.other[2] = *tl; 3698 } else if (nd->nd_repstat == NFSERR_STALESTATEID) 3699 nfscl_initiate_recovery(lp->nfsl_open->nfso_own->nfsow_clp); 3700nfsmout: 3701 mbuf_freem(nd->nd_mrep); 3702 return (error); 3703} 3704 3705/* 3706 * The actual Lock RPC. 3707 */ 3708APPLESTATIC int 3709nfsrpc_lock(struct nfsrv_descript *nd, struct nfsmount *nmp, vnode_t vp, 3710 u_int8_t *nfhp, int fhlen, struct nfscllockowner *lp, int newone, 3711 int reclaim, u_int64_t off, u_int64_t len, short type, struct ucred *cred, 3712 NFSPROC_T *p, int syscred) 3713{ 3714 u_int32_t *tl; 3715 int error, size; 3716 3717 nfscl_reqstart(nd, NFSPROC_LOCK, nmp, nfhp, fhlen, NULL); 3718 NFSM_BUILD(tl, u_int32_t *, 7 * NFSX_UNSIGNED); 3719 if (type == F_RDLCK) 3720 *tl++ = txdr_unsigned(NFSV4LOCKT_READ); 3721 else 3722 *tl++ = txdr_unsigned(NFSV4LOCKT_WRITE); 3723 *tl++ = txdr_unsigned(reclaim); 3724 txdr_hyper(off, tl); 3725 tl += 2; 3726 txdr_hyper(len, tl); 3727 tl += 2; 3728 if (newone) { 3729 *tl = newnfs_true; 3730 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID + 3731 2 * NFSX_UNSIGNED + NFSX_HYPER); 3732 *tl++ = txdr_unsigned(lp->nfsl_open->nfso_own->nfsow_seqid); 3733 *tl++ = lp->nfsl_open->nfso_stateid.seqid; 3734 *tl++ = lp->nfsl_open->nfso_stateid.other[0]; 3735 *tl++ = lp->nfsl_open->nfso_stateid.other[1]; 3736 *tl++ = lp->nfsl_open->nfso_stateid.other[2]; 3737 *tl++ = txdr_unsigned(lp->nfsl_seqid); 3738 *tl++ = lp->nfsl_open->nfso_own->nfsow_clp->nfsc_clientid.lval[0]; 3739 *tl = lp->nfsl_open->nfso_own->nfsow_clp->nfsc_clientid.lval[1]; 3740 (void) nfsm_strtom(nd, lp->nfsl_owner, NFSV4CL_LOCKNAMELEN); 3741 } else { 3742 *tl = newnfs_false; 3743 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID + NFSX_UNSIGNED); 3744 *tl++ = lp->nfsl_stateid.seqid; 3745 *tl++ = lp->nfsl_stateid.other[0]; 3746 *tl++ = lp->nfsl_stateid.other[1]; 3747 *tl++ = lp->nfsl_stateid.other[2]; 3748 *tl = txdr_unsigned(lp->nfsl_seqid); 3749 if (nfstest_outofseq && 3750 (arc4random() % nfstest_outofseq) == 0) 3751 *tl = txdr_unsigned(lp->nfsl_seqid + 1); 3752 } 3753 if (syscred) 3754 nd->nd_flag |= ND_USEGSSNAME; 3755 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, vp, p, cred, 3756 NFS_PROG, NFS_VER4, NULL, 1, NULL); 3757 if (error) 3758 return (error); 3759 if (newone) 3760 NFSCL_INCRSEQID(lp->nfsl_open->nfso_own->nfsow_seqid, nd); 3761 NFSCL_INCRSEQID(lp->nfsl_seqid, nd); 3762 if (nd->nd_repstat == 0) { 3763 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID); 3764 lp->nfsl_stateid.seqid = *tl++; 3765 lp->nfsl_stateid.other[0] = *tl++; 3766 lp->nfsl_stateid.other[1] = *tl++; 3767 lp->nfsl_stateid.other[2] = *tl; 3768 } else if (nd->nd_repstat == NFSERR_DENIED) { 3769 NFSM_DISSECT(tl, u_int32_t *, 8 * NFSX_UNSIGNED); 3770 size = fxdr_unsigned(int, *(tl + 7)); 3771 if (size < 0 || size > NFSV4_OPAQUELIMIT) 3772 error = EBADRPC; 3773 if (!error) 3774 error = nfsm_advance(nd, NFSM_RNDUP(size), -1); 3775 } else if (nd->nd_repstat == NFSERR_STALESTATEID) 3776 nfscl_initiate_recovery(lp->nfsl_open->nfso_own->nfsow_clp); 3777nfsmout: 3778 mbuf_freem(nd->nd_mrep); 3779 return (error); 3780} 3781 3782/* 3783 * nfs statfs rpc 3784 * (always called with the vp for the mount point) 3785 */ 3786APPLESTATIC int 3787nfsrpc_statfs(vnode_t vp, struct nfsstatfs *sbp, struct nfsfsinfo *fsp, 3788 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, 3789 void *stuff) 3790{ 3791 u_int32_t *tl = NULL; 3792 struct nfsrv_descript nfsd, *nd = &nfsd; 3793 struct nfsmount *nmp; 3794 nfsattrbit_t attrbits; 3795 int error; 3796 3797 *attrflagp = 0; 3798 nmp = VFSTONFS(vnode_mount(vp)); 3799 if (NFSHASNFSV4(nmp)) { 3800 /* 3801 * For V4, you actually do a getattr. 3802 */ 3803 NFSCL_REQSTART(nd, NFSPROC_GETATTR, vp); 3804 NFSSTATFS_GETATTRBIT(&attrbits); 3805 (void) nfsrv_putattrbit(nd, &attrbits); 3806 nd->nd_flag |= ND_USEGSSNAME; 3807 error = nfscl_request(nd, vp, p, cred, stuff); 3808 if (error) 3809 return (error); 3810 if (nd->nd_repstat == 0) { 3811 error = nfsv4_loadattr(nd, NULL, nap, NULL, NULL, 0, 3812 NULL, NULL, sbp, fsp, NULL, 0, NULL, NULL, NULL, p, 3813 cred); 3814 if (!error) { 3815 nmp->nm_fsid[0] = nap->na_filesid[0]; 3816 nmp->nm_fsid[1] = nap->na_filesid[1]; 3817 NFSSETHASSETFSID(nmp); 3818 *attrflagp = 1; 3819 } 3820 } else { 3821 error = nd->nd_repstat; 3822 } 3823 if (error) 3824 goto nfsmout; 3825 } else { 3826 NFSCL_REQSTART(nd, NFSPROC_FSSTAT, vp); 3827 error = nfscl_request(nd, vp, p, cred, stuff); 3828 if (error) 3829 return (error); 3830 if (nd->nd_flag & ND_NFSV3) { 3831 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 3832 if (error) 3833 goto nfsmout; 3834 } 3835 if (nd->nd_repstat) { 3836 error = nd->nd_repstat; 3837 goto nfsmout; 3838 } 3839 NFSM_DISSECT(tl, u_int32_t *, 3840 NFSX_STATFS(nd->nd_flag & ND_NFSV3)); 3841 } 3842 if (NFSHASNFSV3(nmp)) { 3843 sbp->sf_tbytes = fxdr_hyper(tl); tl += 2; 3844 sbp->sf_fbytes = fxdr_hyper(tl); tl += 2; 3845 sbp->sf_abytes = fxdr_hyper(tl); tl += 2; 3846 sbp->sf_tfiles = fxdr_hyper(tl); tl += 2; 3847 sbp->sf_ffiles = fxdr_hyper(tl); tl += 2; 3848 sbp->sf_afiles = fxdr_hyper(tl); tl += 2; 3849 sbp->sf_invarsec = fxdr_unsigned(u_int32_t, *tl); 3850 } else if (NFSHASNFSV4(nmp) == 0) { 3851 sbp->sf_tsize = fxdr_unsigned(u_int32_t, *tl++); 3852 sbp->sf_bsize = fxdr_unsigned(u_int32_t, *tl++); 3853 sbp->sf_blocks = fxdr_unsigned(u_int32_t, *tl++); 3854 sbp->sf_bfree = fxdr_unsigned(u_int32_t, *tl++); 3855 sbp->sf_bavail = fxdr_unsigned(u_int32_t, *tl); 3856 } 3857nfsmout: 3858 mbuf_freem(nd->nd_mrep); 3859 return (error); 3860} 3861 3862/* 3863 * nfs pathconf rpc 3864 */ 3865APPLESTATIC int 3866nfsrpc_pathconf(vnode_t vp, struct nfsv3_pathconf *pc, 3867 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, 3868 void *stuff) 3869{ 3870 struct nfsrv_descript nfsd, *nd = &nfsd; 3871 struct nfsmount *nmp; 3872 u_int32_t *tl; 3873 nfsattrbit_t attrbits; 3874 int error; 3875 3876 *attrflagp = 0; 3877 nmp = VFSTONFS(vnode_mount(vp)); 3878 if (NFSHASNFSV4(nmp)) { 3879 /* 3880 * For V4, you actually do a getattr. 3881 */ 3882 NFSCL_REQSTART(nd, NFSPROC_GETATTR, vp); 3883 NFSPATHCONF_GETATTRBIT(&attrbits); 3884 (void) nfsrv_putattrbit(nd, &attrbits); 3885 nd->nd_flag |= ND_USEGSSNAME; 3886 error = nfscl_request(nd, vp, p, cred, stuff); 3887 if (error) 3888 return (error); 3889 if (nd->nd_repstat == 0) { 3890 error = nfsv4_loadattr(nd, NULL, nap, NULL, NULL, 0, 3891 pc, NULL, NULL, NULL, NULL, 0, NULL, NULL, NULL, p, 3892 cred); 3893 if (!error) 3894 *attrflagp = 1; 3895 } else { 3896 error = nd->nd_repstat; 3897 } 3898 } else { 3899 NFSCL_REQSTART(nd, NFSPROC_PATHCONF, vp); 3900 error = nfscl_request(nd, vp, p, cred, stuff); 3901 if (error) 3902 return (error); 3903 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 3904 if (nd->nd_repstat && !error) 3905 error = nd->nd_repstat; 3906 if (!error) { 3907 NFSM_DISSECT(tl, u_int32_t *, NFSX_V3PATHCONF); 3908 pc->pc_linkmax = fxdr_unsigned(u_int32_t, *tl++); 3909 pc->pc_namemax = fxdr_unsigned(u_int32_t, *tl++); 3910 pc->pc_notrunc = fxdr_unsigned(u_int32_t, *tl++); 3911 pc->pc_chownrestricted = 3912 fxdr_unsigned(u_int32_t, *tl++); 3913 pc->pc_caseinsensitive = 3914 fxdr_unsigned(u_int32_t, *tl++); 3915 pc->pc_casepreserving = fxdr_unsigned(u_int32_t, *tl); 3916 } 3917 } 3918nfsmout: 3919 mbuf_freem(nd->nd_mrep); 3920 return (error); 3921} 3922 3923/* 3924 * nfs version 3 fsinfo rpc call 3925 */ 3926APPLESTATIC int 3927nfsrpc_fsinfo(vnode_t vp, struct nfsfsinfo *fsp, struct ucred *cred, 3928 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff) 3929{ 3930 u_int32_t *tl; 3931 struct nfsrv_descript nfsd, *nd = &nfsd; 3932 int error; 3933 3934 *attrflagp = 0; 3935 NFSCL_REQSTART(nd, NFSPROC_FSINFO, vp); 3936 error = nfscl_request(nd, vp, p, cred, stuff); 3937 if (error) 3938 return (error); 3939 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 3940 if (nd->nd_repstat && !error) 3941 error = nd->nd_repstat; 3942 if (!error) { 3943 NFSM_DISSECT(tl, u_int32_t *, NFSX_V3FSINFO); 3944 fsp->fs_rtmax = fxdr_unsigned(u_int32_t, *tl++); 3945 fsp->fs_rtpref = fxdr_unsigned(u_int32_t, *tl++); 3946 fsp->fs_rtmult = fxdr_unsigned(u_int32_t, *tl++); 3947 fsp->fs_wtmax = fxdr_unsigned(u_int32_t, *tl++); 3948 fsp->fs_wtpref = fxdr_unsigned(u_int32_t, *tl++); 3949 fsp->fs_wtmult = fxdr_unsigned(u_int32_t, *tl++); 3950 fsp->fs_dtpref = fxdr_unsigned(u_int32_t, *tl++); 3951 fsp->fs_maxfilesize = fxdr_hyper(tl); 3952 tl += 2; 3953 fxdr_nfsv3time(tl, &fsp->fs_timedelta); 3954 tl += 2; 3955 fsp->fs_properties = fxdr_unsigned(u_int32_t, *tl); 3956 } 3957nfsmout: 3958 mbuf_freem(nd->nd_mrep); 3959 return (error); 3960} 3961 3962/* 3963 * This function performs the Renew RPC. 3964 */ 3965APPLESTATIC int 3966nfsrpc_renew(struct nfsclclient *clp, struct ucred *cred, NFSPROC_T *p) 3967{ 3968 u_int32_t *tl; 3969 struct nfsrv_descript nfsd; 3970 struct nfsrv_descript *nd = &nfsd; 3971 struct nfsmount *nmp; 3972 int error; 3973 3974 nmp = clp->nfsc_nmp; 3975 if (nmp == NULL) 3976 return (0); 3977 nfscl_reqstart(nd, NFSPROC_RENEW, nmp, NULL, 0, NULL); 3978 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 3979 *tl++ = clp->nfsc_clientid.lval[0]; 3980 *tl = clp->nfsc_clientid.lval[1]; 3981 nd->nd_flag |= ND_USEGSSNAME; 3982 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 3983 NFS_PROG, NFS_VER4, NULL, 1, NULL); 3984 if (error) 3985 return (error); 3986 error = nd->nd_repstat; 3987 mbuf_freem(nd->nd_mrep); 3988 return (error); 3989} 3990 3991/* 3992 * This function performs the Releaselockowner RPC. 3993 */ 3994APPLESTATIC int 3995nfsrpc_rellockown(struct nfsmount *nmp, struct nfscllockowner *lp, 3996 struct ucred *cred, NFSPROC_T *p) 3997{ 3998 struct nfsrv_descript nfsd, *nd = &nfsd; 3999 u_int32_t *tl; 4000 int error; 4001 4002 nfscl_reqstart(nd, NFSPROC_RELEASELCKOWN, nmp, NULL, 0, NULL); 4003 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 4004 *tl++ = nmp->nm_clp->nfsc_clientid.lval[0]; 4005 *tl = nmp->nm_clp->nfsc_clientid.lval[1]; 4006 (void) nfsm_strtom(nd, lp->nfsl_owner, NFSV4CL_LOCKNAMELEN); 4007 nd->nd_flag |= ND_USEGSSNAME; 4008 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 4009 NFS_PROG, NFS_VER4, NULL, 1, NULL); 4010 if (error) 4011 return (error); 4012 error = nd->nd_repstat; 4013 mbuf_freem(nd->nd_mrep); 4014 return (error); 4015} 4016 4017/* 4018 * This function performs the Compound to get the mount pt FH. 4019 */ 4020APPLESTATIC int 4021nfsrpc_getdirpath(struct nfsmount *nmp, u_char *dirpath, struct ucred *cred, 4022 NFSPROC_T *p) 4023{ 4024 u_int32_t *tl; 4025 struct nfsrv_descript nfsd; 4026 struct nfsrv_descript *nd = &nfsd; 4027 u_char *cp, *cp2; 4028 int error, cnt, len, setnil; 4029 u_int32_t *opcntp; 4030 4031 nfscl_reqstart(nd, NFSPROC_PUTROOTFH, nmp, NULL, 0, &opcntp); 4032 cp = dirpath; 4033 cnt = 0; 4034 do { 4035 setnil = 0; 4036 while (*cp == '/') 4037 cp++; 4038 cp2 = cp; 4039 while (*cp2 != '\0' && *cp2 != '/') 4040 cp2++; 4041 if (*cp2 == '/') { 4042 setnil = 1; 4043 *cp2 = '\0'; 4044 } 4045 if (cp2 != cp) { 4046 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 4047 *tl = txdr_unsigned(NFSV4OP_LOOKUP); 4048 nfsm_strtom(nd, cp, strlen(cp)); 4049 cnt++; 4050 } 4051 if (setnil) 4052 *cp2++ = '/'; 4053 cp = cp2; 4054 } while (*cp != '\0'); 4055 *opcntp = txdr_unsigned(2 + cnt); 4056 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 4057 *tl = txdr_unsigned(NFSV4OP_GETFH); 4058 nd->nd_flag |= ND_USEGSSNAME; 4059 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 4060 NFS_PROG, NFS_VER4, NULL, 1, NULL); 4061 if (error) 4062 return (error); 4063 if (nd->nd_repstat == 0) { 4064 NFSM_DISSECT(tl, u_int32_t *, (3 + 2 * cnt) * NFSX_UNSIGNED); 4065 tl += (2 + 2 * cnt); 4066 if ((len = fxdr_unsigned(int, *tl)) <= 0 || 4067 len > NFSX_FHMAX) { 4068 nd->nd_repstat = NFSERR_BADXDR; 4069 } else { 4070 nd->nd_repstat = nfsrv_mtostr(nd, nmp->nm_fh, len); 4071 if (nd->nd_repstat == 0) 4072 nmp->nm_fhsize = len; 4073 } 4074 } 4075 error = nd->nd_repstat; 4076nfsmout: 4077 mbuf_freem(nd->nd_mrep); 4078 return (error); 4079} 4080 4081/* 4082 * This function performs the Delegreturn RPC. 4083 */ 4084APPLESTATIC int 4085nfsrpc_delegreturn(struct nfscldeleg *dp, struct ucred *cred, 4086 struct nfsmount *nmp, NFSPROC_T *p, int syscred) 4087{ 4088 u_int32_t *tl; 4089 struct nfsrv_descript nfsd; 4090 struct nfsrv_descript *nd = &nfsd; 4091 int error; 4092 4093 nfscl_reqstart(nd, NFSPROC_DELEGRETURN, nmp, dp->nfsdl_fh, 4094 dp->nfsdl_fhlen, NULL); 4095 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID); 4096 *tl++ = dp->nfsdl_stateid.seqid; 4097 *tl++ = dp->nfsdl_stateid.other[0]; 4098 *tl++ = dp->nfsdl_stateid.other[1]; 4099 *tl = dp->nfsdl_stateid.other[2]; 4100 if (syscred) 4101 nd->nd_flag |= ND_USEGSSNAME; 4102 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 4103 NFS_PROG, NFS_VER4, NULL, 1, NULL); 4104 if (error) 4105 return (error); 4106 error = nd->nd_repstat; 4107 mbuf_freem(nd->nd_mrep); 4108 return (error); 4109} 4110 4111/* 4112 * nfs getacl call. 4113 */ 4114APPLESTATIC int 4115nfsrpc_getacl(vnode_t vp, struct ucred *cred, NFSPROC_T *p, 4116 struct acl *aclp, void *stuff) 4117{ 4118 struct nfsrv_descript nfsd, *nd = &nfsd; 4119 int error; 4120 nfsattrbit_t attrbits; 4121 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 4122 4123 if (nfsrv_useacl == 0 || !NFSHASNFSV4(nmp)) 4124 return (EOPNOTSUPP); 4125 NFSCL_REQSTART(nd, NFSPROC_GETACL, vp); 4126 NFSZERO_ATTRBIT(&attrbits); 4127 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_ACL); 4128 (void) nfsrv_putattrbit(nd, &attrbits); 4129 error = nfscl_request(nd, vp, p, cred, stuff); 4130 if (error) 4131 return (error); 4132 if (!nd->nd_repstat) 4133 error = nfsv4_loadattr(nd, vp, NULL, NULL, NULL, 0, NULL, 4134 NULL, NULL, NULL, aclp, 0, NULL, NULL, NULL, p, cred); 4135 else 4136 error = nd->nd_repstat; 4137 mbuf_freem(nd->nd_mrep); 4138 return (error); 4139} 4140 4141/* 4142 * nfs setacl call. 4143 */ 4144APPLESTATIC int 4145nfsrpc_setacl(vnode_t vp, struct ucred *cred, NFSPROC_T *p, 4146 struct acl *aclp, void *stuff) 4147{ 4148 int error; 4149 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 4150 4151 if (nfsrv_useacl == 0 || !NFSHASNFSV4(nmp)) 4152 return (EOPNOTSUPP); 4153 error = nfsrpc_setattr(vp, NULL, aclp, cred, p, NULL, NULL, stuff); 4154 return (error); 4155} 4156 4157/* 4158 * nfs setacl call. 4159 */ 4160static int 4161nfsrpc_setaclrpc(vnode_t vp, struct ucred *cred, NFSPROC_T *p, 4162 struct acl *aclp, nfsv4stateid_t *stateidp, void *stuff) 4163{ 4164 struct nfsrv_descript nfsd, *nd = &nfsd; 4165 int error; 4166 nfsattrbit_t attrbits; 4167 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 4168 4169 if (!NFSHASNFSV4(nmp)) 4170 return (EOPNOTSUPP); 4171 NFSCL_REQSTART(nd, NFSPROC_SETACL, vp); 4172 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID); 4173 NFSZERO_ATTRBIT(&attrbits); 4174 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_ACL); 4175 (void) nfsv4_fillattr(nd, vp, aclp, NULL, NULL, 0, &attrbits, 4176 NULL, NULL, 0, 0); 4177 error = nfscl_request(nd, vp, p, cred, stuff); 4178 if (error) 4179 return (error); 4180 /* Don't care about the pre/postop attributes */ 4181 mbuf_freem(nd->nd_mrep); 4182 return (nd->nd_repstat); 4183} 4184