nfs_clrpcops.c revision 220807
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 220807 2011-04-18 23:35:16Z 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 /* 272 * Invalidate the attribute cache, so that 273 * attributes that pre-date the issue of a 274 * delegation are not cached, since the 275 * cached attributes will remain valid while 276 * the delegation is held. 277 */ 278 NFSINVALATTRCACHE(np); 279 NFSUNLOCKNODE(np); 280#endif 281 (void) nfscl_deleg(nmp->nm_mountp, 282 op->nfso_own->nfsow_clp, 283 nfhp->nfh_fh, nfhp->nfh_len, cred, p, &dp); 284 } 285 } else { 286 error = EIO; 287 } 288 newnfs_copyincred(cred, &op->nfso_cred); 289 } else if (ret == NFSCLOPEN_SETCRED) 290 /* 291 * This is a new local open on a delegation. It needs 292 * to have credentials so that an open can be done 293 * against the server during recovery. 294 */ 295 newnfs_copyincred(cred, &op->nfso_cred); 296 297 /* 298 * nfso_opencnt is the count of how many VOP_OPEN()s have 299 * been done on this Open successfully and a VOP_CLOSE() 300 * is expected for each of these. 301 * If error is non-zero, don't increment it, since the Open 302 * hasn't succeeded yet. 303 */ 304 if (!error) 305 op->nfso_opencnt++; 306 nfscl_openrelease(op, error, newone); 307 if (error == NFSERR_GRACE || error == NFSERR_STALECLIENTID || 308 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY) { 309 (void) nfs_catnap(PZERO, error, "nfs_open"); 310 } else if ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) 311 && clidrev != 0) { 312 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p); 313 retrycnt++; 314 } 315 } while (error == NFSERR_GRACE || error == NFSERR_STALECLIENTID || 316 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 317 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) && 318 expireret == 0 && clidrev != 0 && retrycnt < 4)); 319 if (error && retrycnt >= 4) 320 error = EIO; 321 return (error); 322} 323 324/* 325 * the actual open rpc 326 */ 327APPLESTATIC int 328nfsrpc_openrpc(struct nfsmount *nmp, vnode_t vp, u_int8_t *nfhp, int fhlen, 329 u_int8_t *newfhp, int newfhlen, u_int32_t mode, struct nfsclopen *op, 330 u_int8_t *name, int namelen, struct nfscldeleg **dpp, 331 int reclaim, u_int32_t delegtype, struct ucred *cred, NFSPROC_T *p, 332 int syscred, int recursed) 333{ 334 u_int32_t *tl; 335 struct nfsrv_descript nfsd, *nd = &nfsd; 336 struct nfscldeleg *dp, *ndp = NULL; 337 struct nfsvattr nfsva; 338 u_int32_t rflags, deleg; 339 nfsattrbit_t attrbits; 340 int error, ret, acesize, limitby; 341 342 dp = *dpp; 343 *dpp = NULL; 344 nfscl_reqstart(nd, NFSPROC_OPEN, nmp, nfhp, fhlen, NULL); 345 NFSM_BUILD(tl, u_int32_t *, 5 * NFSX_UNSIGNED); 346 *tl++ = txdr_unsigned(op->nfso_own->nfsow_seqid); 347 *tl++ = txdr_unsigned(mode & NFSV4OPEN_ACCESSBOTH); 348 *tl++ = txdr_unsigned((mode >> NFSLCK_SHIFT) & NFSV4OPEN_DENYBOTH); 349 *tl++ = op->nfso_own->nfsow_clp->nfsc_clientid.lval[0]; 350 *tl = op->nfso_own->nfsow_clp->nfsc_clientid.lval[1]; 351 (void) nfsm_strtom(nd, op->nfso_own->nfsow_owner, NFSV4CL_LOCKNAMELEN); 352 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 353 *tl++ = txdr_unsigned(NFSV4OPEN_NOCREATE); 354 if (reclaim) { 355 *tl = txdr_unsigned(NFSV4OPEN_CLAIMPREVIOUS); 356 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 357 *tl = txdr_unsigned(delegtype); 358 } else { 359 if (dp != NULL) { 360 *tl = txdr_unsigned(NFSV4OPEN_CLAIMDELEGATECUR); 361 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID); 362 *tl++ = dp->nfsdl_stateid.seqid; 363 *tl++ = dp->nfsdl_stateid.other[0]; 364 *tl++ = dp->nfsdl_stateid.other[1]; 365 *tl = dp->nfsdl_stateid.other[2]; 366 } else { 367 *tl = txdr_unsigned(NFSV4OPEN_CLAIMNULL); 368 } 369 (void) nfsm_strtom(nd, name, namelen); 370 } 371 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 372 *tl = txdr_unsigned(NFSV4OP_GETATTR); 373 NFSZERO_ATTRBIT(&attrbits); 374 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_CHANGE); 375 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_TIMEMODIFY); 376 (void) nfsrv_putattrbit(nd, &attrbits); 377 if (syscred) 378 nd->nd_flag |= ND_USEGSSNAME; 379 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, vp, p, cred, 380 NFS_PROG, NFS_VER4, NULL, 1, NULL); 381 if (error) 382 return (error); 383 NFSCL_INCRSEQID(op->nfso_own->nfsow_seqid, nd); 384 if (!nd->nd_repstat) { 385 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID + 386 6 * NFSX_UNSIGNED); 387 op->nfso_stateid.seqid = *tl++; 388 op->nfso_stateid.other[0] = *tl++; 389 op->nfso_stateid.other[1] = *tl++; 390 op->nfso_stateid.other[2] = *tl; 391 rflags = fxdr_unsigned(u_int32_t, *(tl + 6)); 392 error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL); 393 if (error) 394 goto nfsmout; 395 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 396 deleg = fxdr_unsigned(u_int32_t, *tl); 397 if (deleg == NFSV4OPEN_DELEGATEREAD || 398 deleg == NFSV4OPEN_DELEGATEWRITE) { 399 if (!(op->nfso_own->nfsow_clp->nfsc_flags & 400 NFSCLFLAGS_FIRSTDELEG)) 401 op->nfso_own->nfsow_clp->nfsc_flags |= 402 (NFSCLFLAGS_FIRSTDELEG | NFSCLFLAGS_GOTDELEG); 403 MALLOC(ndp, struct nfscldeleg *, 404 sizeof (struct nfscldeleg) + newfhlen, 405 M_NFSCLDELEG, M_WAITOK); 406 LIST_INIT(&ndp->nfsdl_owner); 407 LIST_INIT(&ndp->nfsdl_lock); 408 ndp->nfsdl_clp = op->nfso_own->nfsow_clp; 409 ndp->nfsdl_fhlen = newfhlen; 410 NFSBCOPY(newfhp, ndp->nfsdl_fh, newfhlen); 411 newnfs_copyincred(cred, &ndp->nfsdl_cred); 412 nfscl_lockinit(&ndp->nfsdl_rwlock); 413 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID + 414 NFSX_UNSIGNED); 415 ndp->nfsdl_stateid.seqid = *tl++; 416 ndp->nfsdl_stateid.other[0] = *tl++; 417 ndp->nfsdl_stateid.other[1] = *tl++; 418 ndp->nfsdl_stateid.other[2] = *tl++; 419 ret = fxdr_unsigned(int, *tl); 420 if (deleg == NFSV4OPEN_DELEGATEWRITE) { 421 ndp->nfsdl_flags = NFSCLDL_WRITE; 422 /* 423 * Indicates how much the file can grow. 424 */ 425 NFSM_DISSECT(tl, u_int32_t *, 426 3 * NFSX_UNSIGNED); 427 limitby = fxdr_unsigned(int, *tl++); 428 switch (limitby) { 429 case NFSV4OPEN_LIMITSIZE: 430 ndp->nfsdl_sizelimit = fxdr_hyper(tl); 431 break; 432 case NFSV4OPEN_LIMITBLOCKS: 433 ndp->nfsdl_sizelimit = 434 fxdr_unsigned(u_int64_t, *tl++); 435 ndp->nfsdl_sizelimit *= 436 fxdr_unsigned(u_int64_t, *tl); 437 break; 438 default: 439 error = NFSERR_BADXDR; 440 goto nfsmout; 441 }; 442 } else { 443 ndp->nfsdl_flags = NFSCLDL_READ; 444 } 445 if (ret) 446 ndp->nfsdl_flags |= NFSCLDL_RECALL; 447 error = nfsrv_dissectace(nd, &ndp->nfsdl_ace, &ret, 448 &acesize, p); 449 if (error) 450 goto nfsmout; 451 } else if (deleg != NFSV4OPEN_DELEGATENONE) { 452 error = NFSERR_BADXDR; 453 goto nfsmout; 454 } 455 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 456 error = nfsv4_loadattr(nd, NULL, &nfsva, NULL, 457 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0, 458 NULL, NULL, NULL, p, cred); 459 if (error) 460 goto nfsmout; 461 if (ndp != NULL) { 462 ndp->nfsdl_change = nfsva.na_filerev; 463 ndp->nfsdl_modtime = nfsva.na_mtime; 464 ndp->nfsdl_flags |= NFSCLDL_MODTIMESET; 465 } 466 if (!reclaim && (rflags & NFSV4OPEN_RESULTCONFIRM)) { 467 do { 468 ret = nfsrpc_openconfirm(vp, newfhp, newfhlen, op, 469 cred, p); 470 if (ret == NFSERR_DELAY) 471 (void) nfs_catnap(PZERO, ret, "nfs_open"); 472 } while (ret == NFSERR_DELAY); 473 error = ret; 474 } 475 if ((rflags & NFSV4OPEN_LOCKTYPEPOSIX) || 476 nfscl_assumeposixlocks) 477 op->nfso_posixlock = 1; 478 else 479 op->nfso_posixlock = 0; 480 481 /* 482 * If the server is handing out delegations, but we didn't 483 * get one because an OpenConfirm was required, try the 484 * Open again, to get a delegation. This is a harmless no-op, 485 * from a server's point of view. 486 */ 487 if (!reclaim && (rflags & NFSV4OPEN_RESULTCONFIRM) && 488 (op->nfso_own->nfsow_clp->nfsc_flags & NFSCLFLAGS_GOTDELEG) 489 && !error && dp == NULL && ndp == NULL && !recursed) { 490 do { 491 ret = nfsrpc_openrpc(nmp, vp, nfhp, fhlen, newfhp, 492 newfhlen, mode, op, name, namelen, &ndp, 0, 0x0, 493 cred, p, syscred, 1); 494 if (ret == NFSERR_DELAY) 495 (void) nfs_catnap(PZERO, ret, "nfs_open2"); 496 } while (ret == NFSERR_DELAY); 497 if (ret) { 498 if (ndp != NULL) 499 FREE((caddr_t)ndp, M_NFSCLDELEG); 500 if (ret == NFSERR_STALECLIENTID || 501 ret == NFSERR_STALEDONTRECOVER) 502 error = ret; 503 } 504 } 505 } 506 if (nd->nd_repstat != 0 && error == 0) 507 error = nd->nd_repstat; 508 if (error == NFSERR_STALECLIENTID) 509 nfscl_initiate_recovery(op->nfso_own->nfsow_clp); 510nfsmout: 511 if (!error) 512 *dpp = ndp; 513 else if (ndp != NULL) 514 FREE((caddr_t)ndp, M_NFSCLDELEG); 515 mbuf_freem(nd->nd_mrep); 516 return (error); 517} 518 519/* 520 * open downgrade rpc 521 */ 522APPLESTATIC int 523nfsrpc_opendowngrade(vnode_t vp, u_int32_t mode, struct nfsclopen *op, 524 struct ucred *cred, NFSPROC_T *p) 525{ 526 u_int32_t *tl; 527 struct nfsrv_descript nfsd, *nd = &nfsd; 528 int error; 529 530 NFSCL_REQSTART(nd, NFSPROC_OPENDOWNGRADE, vp); 531 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID + 3 * NFSX_UNSIGNED); 532 *tl++ = op->nfso_stateid.seqid; 533 *tl++ = op->nfso_stateid.other[0]; 534 *tl++ = op->nfso_stateid.other[1]; 535 *tl++ = op->nfso_stateid.other[2]; 536 *tl++ = txdr_unsigned(op->nfso_own->nfsow_seqid); 537 *tl++ = txdr_unsigned(mode & NFSV4OPEN_ACCESSBOTH); 538 *tl = txdr_unsigned((mode >> NFSLCK_SHIFT) & NFSV4OPEN_DENYBOTH); 539 error = nfscl_request(nd, vp, p, cred, NULL); 540 if (error) 541 return (error); 542 NFSCL_INCRSEQID(op->nfso_own->nfsow_seqid, nd); 543 if (!nd->nd_repstat) { 544 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID); 545 op->nfso_stateid.seqid = *tl++; 546 op->nfso_stateid.other[0] = *tl++; 547 op->nfso_stateid.other[1] = *tl++; 548 op->nfso_stateid.other[2] = *tl; 549 } 550 if (nd->nd_repstat && error == 0) 551 error = nd->nd_repstat; 552 if (error == NFSERR_STALESTATEID) 553 nfscl_initiate_recovery(op->nfso_own->nfsow_clp); 554nfsmout: 555 mbuf_freem(nd->nd_mrep); 556 return (error); 557} 558 559/* 560 * V4 Close operation. 561 */ 562APPLESTATIC int 563nfsrpc_close(vnode_t vp, int doclose, NFSPROC_T *p) 564{ 565 struct nfsclclient *clp; 566 int error; 567 568 if (vnode_vtype(vp) != VREG) 569 return (0); 570 if (doclose) 571 error = nfscl_doclose(vp, &clp, p); 572 else 573 error = nfscl_getclose(vp, &clp); 574 if (error) 575 return (error); 576 577 nfscl_clientrelease(clp); 578 return (0); 579} 580 581/* 582 * Close the open. 583 */ 584APPLESTATIC void 585nfsrpc_doclose(struct nfsmount *nmp, struct nfsclopen *op, NFSPROC_T *p) 586{ 587 struct nfsrv_descript nfsd, *nd = &nfsd; 588 struct nfscllockowner *lp; 589 struct nfscllock *lop, *nlop; 590 struct ucred *tcred; 591 u_int64_t off = 0, len = 0; 592 u_int32_t type = NFSV4LOCKT_READ; 593 int error, do_unlock, trycnt; 594 595 tcred = newnfs_getcred(); 596 newnfs_copycred(&op->nfso_cred, tcred); 597 /* 598 * (Theoretically this could be done in the same 599 * compound as the close, but having multiple 600 * sequenced Ops in the same compound might be 601 * too scary for some servers.) 602 */ 603 if (op->nfso_posixlock) { 604 off = 0; 605 len = NFS64BITSSET; 606 type = NFSV4LOCKT_READ; 607 } 608 609 /* 610 * Since this function is only called from VOP_INACTIVE(), no 611 * other thread will be manipulating this Open. As such, the 612 * lock lists are not being changed by other threads, so it should 613 * be safe to do this without locking. 614 */ 615 LIST_FOREACH(lp, &op->nfso_lock, nfsl_list) { 616 do_unlock = 1; 617 LIST_FOREACH_SAFE(lop, &lp->nfsl_lock, nfslo_list, nlop) { 618 if (op->nfso_posixlock == 0) { 619 off = lop->nfslo_first; 620 len = lop->nfslo_end - lop->nfslo_first; 621 if (lop->nfslo_type == F_WRLCK) 622 type = NFSV4LOCKT_WRITE; 623 else 624 type = NFSV4LOCKT_READ; 625 } 626 if (do_unlock) { 627 trycnt = 0; 628 do { 629 error = nfsrpc_locku(nd, nmp, lp, off, 630 len, type, tcred, p, 0); 631 if ((nd->nd_repstat == NFSERR_GRACE || 632 nd->nd_repstat == NFSERR_DELAY) && 633 error == 0) 634 (void) nfs_catnap(PZERO, 635 (int)nd->nd_repstat, 636 "nfs_close"); 637 } while ((nd->nd_repstat == NFSERR_GRACE || 638 nd->nd_repstat == NFSERR_DELAY) && 639 error == 0 && trycnt++ < 5); 640 if (op->nfso_posixlock) 641 do_unlock = 0; 642 } 643 nfscl_freelock(lop, 0); 644 } 645 } 646 647 /* 648 * There could be other Opens for different files on the same 649 * OpenOwner, so locking is required. 650 */ 651 NFSLOCKCLSTATE(); 652 nfscl_lockexcl(&op->nfso_own->nfsow_rwlock, NFSCLSTATEMUTEXPTR); 653 NFSUNLOCKCLSTATE(); 654 do { 655 error = nfscl_tryclose(op, tcred, nmp, p); 656 if (error == NFSERR_GRACE) 657 (void) nfs_catnap(PZERO, error, "nfs_close"); 658 } while (error == NFSERR_GRACE); 659 NFSLOCKCLSTATE(); 660 nfscl_lockunlock(&op->nfso_own->nfsow_rwlock); 661 662 /* 663 * Move the lockowner to nfsc_defunctlockowner, 664 * so the Renew thread will do the ReleaseLockOwner 665 * Op on it later. There might still be other 666 * opens using the same lockowner name. 667 */ 668 lp = LIST_FIRST(&op->nfso_lock); 669 if (lp != NULL) { 670 while (LIST_NEXT(lp, nfsl_list) != NULL) 671 lp = LIST_NEXT(lp, nfsl_list); 672 LIST_PREPEND(&nmp->nm_clp->nfsc_defunctlockowner, 673 &op->nfso_lock, lp, nfsl_list); 674 LIST_INIT(&op->nfso_lock); 675 } 676 nfscl_freeopen(op, 0); 677 NFSUNLOCKCLSTATE(); 678 NFSFREECRED(tcred); 679} 680 681/* 682 * The actual Close RPC. 683 */ 684APPLESTATIC int 685nfsrpc_closerpc(struct nfsrv_descript *nd, struct nfsmount *nmp, 686 struct nfsclopen *op, struct ucred *cred, NFSPROC_T *p, 687 int syscred) 688{ 689 u_int32_t *tl; 690 int error; 691 692 nfscl_reqstart(nd, NFSPROC_CLOSE, nmp, op->nfso_fh, 693 op->nfso_fhlen, NULL); 694 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED + NFSX_STATEID); 695 *tl++ = txdr_unsigned(op->nfso_own->nfsow_seqid); 696 *tl++ = op->nfso_stateid.seqid; 697 *tl++ = op->nfso_stateid.other[0]; 698 *tl++ = op->nfso_stateid.other[1]; 699 *tl = op->nfso_stateid.other[2]; 700 if (syscred) 701 nd->nd_flag |= ND_USEGSSNAME; 702 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 703 NFS_PROG, NFS_VER4, NULL, 1, NULL); 704 if (error) 705 return (error); 706 NFSCL_INCRSEQID(op->nfso_own->nfsow_seqid, nd); 707 if (nd->nd_repstat == 0) 708 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID); 709 error = nd->nd_repstat; 710 if (error == NFSERR_STALESTATEID) 711 nfscl_initiate_recovery(op->nfso_own->nfsow_clp); 712nfsmout: 713 mbuf_freem(nd->nd_mrep); 714 return (error); 715} 716 717/* 718 * V4 Open Confirm RPC. 719 */ 720APPLESTATIC int 721nfsrpc_openconfirm(vnode_t vp, u_int8_t *nfhp, int fhlen, 722 struct nfsclopen *op, struct ucred *cred, NFSPROC_T *p) 723{ 724 u_int32_t *tl; 725 struct nfsrv_descript nfsd, *nd = &nfsd; 726 int error; 727 728 nfscl_reqstart(nd, NFSPROC_OPENCONFIRM, VFSTONFS(vnode_mount(vp)), 729 nfhp, fhlen, NULL); 730 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED + NFSX_STATEID); 731 *tl++ = op->nfso_stateid.seqid; 732 *tl++ = op->nfso_stateid.other[0]; 733 *tl++ = op->nfso_stateid.other[1]; 734 *tl++ = op->nfso_stateid.other[2]; 735 *tl = txdr_unsigned(op->nfso_own->nfsow_seqid); 736 error = nfscl_request(nd, vp, p, cred, NULL); 737 if (error) 738 return (error); 739 NFSCL_INCRSEQID(op->nfso_own->nfsow_seqid, nd); 740 if (!nd->nd_repstat) { 741 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID); 742 op->nfso_stateid.seqid = *tl++; 743 op->nfso_stateid.other[0] = *tl++; 744 op->nfso_stateid.other[1] = *tl++; 745 op->nfso_stateid.other[2] = *tl; 746 } 747 error = nd->nd_repstat; 748 if (error == NFSERR_STALESTATEID) 749 nfscl_initiate_recovery(op->nfso_own->nfsow_clp); 750nfsmout: 751 mbuf_freem(nd->nd_mrep); 752 return (error); 753} 754 755/* 756 * Do the setclientid and setclientid confirm RPCs. Called from nfs_statfs() 757 * when a mount has just occurred and when the server replies NFSERR_EXPIRED. 758 */ 759APPLESTATIC int 760nfsrpc_setclient(struct nfsmount *nmp, struct nfsclclient *clp, 761 struct ucred *cred, NFSPROC_T *p) 762{ 763 u_int32_t *tl; 764 struct nfsrv_descript nfsd; 765 struct nfsrv_descript *nd = &nfsd; 766 nfsattrbit_t attrbits; 767 u_int8_t *cp = NULL, *cp2, addr[INET6_ADDRSTRLEN + 9]; 768 u_short port; 769 int error, isinet6 = 0, callblen; 770 nfsquad_t confirm; 771 u_int32_t lease; 772 static u_int32_t rev = 0; 773 774 if (nfsboottime.tv_sec == 0) 775 NFSSETBOOTTIME(nfsboottime); 776 nfscl_reqstart(nd, NFSPROC_SETCLIENTID, nmp, NULL, 0, NULL); 777 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 778 *tl++ = txdr_unsigned(nfsboottime.tv_sec); 779 *tl = txdr_unsigned(rev++); 780 (void) nfsm_strtom(nd, clp->nfsc_id, clp->nfsc_idlen); 781 782 /* 783 * set up the callback address 784 */ 785 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 786 *tl = txdr_unsigned(NFS_CALLBCKPROG); 787 callblen = strlen(nfsv4_callbackaddr); 788 if (callblen == 0) 789 cp = nfscl_getmyip(nmp, &isinet6); 790 if (nfscl_enablecallb && nfs_numnfscbd > 0 && 791 (callblen > 0 || cp != NULL)) { 792 port = htons(nfsv4_cbport); 793 cp2 = (u_int8_t *)&port; 794#ifdef INET6 795 if ((callblen > 0 && 796 strchr(nfsv4_callbackaddr, ':')) || isinet6) { 797 char ip6buf[INET6_ADDRSTRLEN], *ip6add; 798 799 (void) nfsm_strtom(nd, "tcp6", 4); 800 if (callblen == 0) { 801 ip6_sprintf(ip6buf, (struct in6_addr *)cp); 802 ip6add = ip6buf; 803 } else { 804 ip6add = nfsv4_callbackaddr; 805 } 806 snprintf(addr, INET6_ADDRSTRLEN + 9, "%s.%d.%d", 807 ip6add, cp2[0], cp2[1]); 808 } else 809#endif 810 { 811 (void) nfsm_strtom(nd, "tcp", 3); 812 if (callblen == 0) 813 snprintf(addr, INET6_ADDRSTRLEN + 9, 814 "%d.%d.%d.%d.%d.%d", cp[0], cp[1], 815 cp[2], cp[3], cp2[0], cp2[1]); 816 else 817 snprintf(addr, INET6_ADDRSTRLEN + 9, 818 "%s.%d.%d", nfsv4_callbackaddr, 819 cp2[0], cp2[1]); 820 } 821 (void) nfsm_strtom(nd, addr, strlen(addr)); 822 } else { 823 (void) nfsm_strtom(nd, "tcp", 3); 824 (void) nfsm_strtom(nd, "0.0.0.0.0.0", 11); 825 } 826 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 827 *tl = txdr_unsigned(clp->nfsc_cbident); 828 nd->nd_flag |= ND_USEGSSNAME; 829 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 830 NFS_PROG, NFS_VER4, NULL, 1, NULL); 831 if (error) 832 return (error); 833 if (nd->nd_repstat == 0) { 834 NFSM_DISSECT(tl, u_int32_t *, 4 * NFSX_UNSIGNED); 835 clp->nfsc_clientid.lval[0] = *tl++; 836 clp->nfsc_clientid.lval[1] = *tl++; 837 confirm.lval[0] = *tl++; 838 confirm.lval[1] = *tl; 839 mbuf_freem(nd->nd_mrep); 840 nd->nd_mrep = NULL; 841 842 /* 843 * and confirm it. 844 */ 845 nfscl_reqstart(nd, NFSPROC_SETCLIENTIDCFRM, nmp, NULL, 0, NULL); 846 NFSM_BUILD(tl, u_int32_t *, 4 * NFSX_UNSIGNED); 847 *tl++ = clp->nfsc_clientid.lval[0]; 848 *tl++ = clp->nfsc_clientid.lval[1]; 849 *tl++ = confirm.lval[0]; 850 *tl = confirm.lval[1]; 851 nd->nd_flag |= ND_USEGSSNAME; 852 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, 853 cred, NFS_PROG, NFS_VER4, NULL, 1, NULL); 854 if (error) 855 return (error); 856 mbuf_freem(nd->nd_mrep); 857 nd->nd_mrep = NULL; 858 if (nd->nd_repstat == 0) { 859 nfscl_reqstart(nd, NFSPROC_GETATTR, nmp, nmp->nm_fh, 860 nmp->nm_fhsize, NULL); 861 NFSZERO_ATTRBIT(&attrbits); 862 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_LEASETIME); 863 (void) nfsrv_putattrbit(nd, &attrbits); 864 nd->nd_flag |= ND_USEGSSNAME; 865 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, 866 cred, NFS_PROG, NFS_VER4, NULL, 1, NULL); 867 if (error) 868 return (error); 869 if (nd->nd_repstat == 0) { 870 error = nfsv4_loadattr(nd, NULL, NULL, NULL, NULL, 0, NULL, 871 NULL, NULL, NULL, NULL, 0, NULL, &lease, NULL, p, cred); 872 if (error) 873 goto nfsmout; 874 clp->nfsc_renew = NFSCL_RENEW(lease); 875 clp->nfsc_expire = NFSD_MONOSEC + clp->nfsc_renew; 876 clp->nfsc_clientidrev++; 877 if (clp->nfsc_clientidrev == 0) 878 clp->nfsc_clientidrev++; 879 } 880 } 881 } 882 error = nd->nd_repstat; 883nfsmout: 884 mbuf_freem(nd->nd_mrep); 885 return (error); 886} 887 888/* 889 * nfs getattr call. 890 */ 891APPLESTATIC int 892nfsrpc_getattr(vnode_t vp, struct ucred *cred, NFSPROC_T *p, 893 struct nfsvattr *nap, void *stuff) 894{ 895 struct nfsrv_descript nfsd, *nd = &nfsd; 896 int error; 897 nfsattrbit_t attrbits; 898 899 NFSCL_REQSTART(nd, NFSPROC_GETATTR, vp); 900 if (nd->nd_flag & ND_NFSV4) { 901 NFSGETATTR_ATTRBIT(&attrbits); 902 (void) nfsrv_putattrbit(nd, &attrbits); 903 } 904 error = nfscl_request(nd, vp, p, cred, stuff); 905 if (error) 906 return (error); 907 if (!nd->nd_repstat) 908 error = nfsm_loadattr(nd, nap); 909 else 910 error = nd->nd_repstat; 911 mbuf_freem(nd->nd_mrep); 912 return (error); 913} 914 915/* 916 * nfs getattr call with non-vnode arguemnts. 917 */ 918APPLESTATIC int 919nfsrpc_getattrnovp(struct nfsmount *nmp, u_int8_t *fhp, int fhlen, int syscred, 920 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, u_int64_t *xidp) 921{ 922 struct nfsrv_descript nfsd, *nd = &nfsd; 923 int error, vers = NFS_VER2; 924 nfsattrbit_t attrbits; 925 926 nfscl_reqstart(nd, NFSPROC_GETATTR, nmp, fhp, fhlen, NULL); 927 if (nd->nd_flag & ND_NFSV4) { 928 vers = NFS_VER4; 929 NFSGETATTR_ATTRBIT(&attrbits); 930 (void) nfsrv_putattrbit(nd, &attrbits); 931 } else if (nd->nd_flag & ND_NFSV3) { 932 vers = NFS_VER3; 933 } 934 if (syscred) 935 nd->nd_flag |= ND_USEGSSNAME; 936 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 937 NFS_PROG, vers, NULL, 1, xidp); 938 if (error) 939 return (error); 940 if (!nd->nd_repstat) 941 error = nfsm_loadattr(nd, nap); 942 else 943 error = nd->nd_repstat; 944 mbuf_freem(nd->nd_mrep); 945 return (error); 946} 947 948/* 949 * Do an nfs setattr operation. 950 */ 951APPLESTATIC int 952nfsrpc_setattr(vnode_t vp, struct vattr *vap, NFSACL_T *aclp, 953 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *rnap, int *attrflagp, 954 void *stuff) 955{ 956 int error, expireret = 0, openerr, retrycnt; 957 u_int32_t clidrev = 0, mode; 958 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 959 struct nfsfh *nfhp; 960 nfsv4stateid_t stateid; 961 void *lckp; 962 963 if (nmp->nm_clp != NULL) 964 clidrev = nmp->nm_clp->nfsc_clientidrev; 965 if (vap != NULL && NFSATTRISSET(u_quad_t, vap, va_size)) 966 mode = NFSV4OPEN_ACCESSWRITE; 967 else 968 mode = NFSV4OPEN_ACCESSREAD; 969 retrycnt = 0; 970 do { 971 lckp = NULL; 972 openerr = 1; 973 if (NFSHASNFSV4(nmp)) { 974 nfhp = VTONFS(vp)->n_fhp; 975 error = nfscl_getstateid(vp, nfhp->nfh_fh, 976 nfhp->nfh_len, mode, cred, p, &stateid, &lckp); 977 if (error && vnode_vtype(vp) == VREG && 978 (mode == NFSV4OPEN_ACCESSWRITE || 979 nfstest_openallsetattr)) { 980 /* 981 * No Open stateid, so try and open the file 982 * now. 983 */ 984 if (mode == NFSV4OPEN_ACCESSWRITE) 985 openerr = nfsrpc_open(vp, FWRITE, cred, 986 p); 987 else 988 openerr = nfsrpc_open(vp, FREAD, cred, 989 p); 990 if (!openerr) 991 (void) nfscl_getstateid(vp, 992 nfhp->nfh_fh, nfhp->nfh_len, 993 mode, cred, p, &stateid, &lckp); 994 } 995 } 996 if (vap != NULL) 997 error = nfsrpc_setattrrpc(vp, vap, &stateid, cred, p, 998 rnap, attrflagp, stuff); 999 else 1000 error = nfsrpc_setaclrpc(vp, cred, p, aclp, &stateid, 1001 stuff); 1002 if (error == NFSERR_STALESTATEID) 1003 nfscl_initiate_recovery(nmp->nm_clp); 1004 if (lckp != NULL) 1005 nfscl_lockderef(lckp); 1006 if (!openerr) 1007 (void) nfsrpc_close(vp, 0, p); 1008 if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 1009 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 1010 error == NFSERR_OLDSTATEID) { 1011 (void) nfs_catnap(PZERO, error, "nfs_setattr"); 1012 } else if ((error == NFSERR_EXPIRED || 1013 error == NFSERR_BADSTATEID) && clidrev != 0) { 1014 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p); 1015 } 1016 retrycnt++; 1017 } while (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 1018 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 1019 (error == NFSERR_OLDSTATEID && retrycnt < 20) || 1020 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) && 1021 expireret == 0 && clidrev != 0 && retrycnt < 4)); 1022 if (error && retrycnt >= 4) 1023 error = EIO; 1024 return (error); 1025} 1026 1027static int 1028nfsrpc_setattrrpc(vnode_t vp, struct vattr *vap, 1029 nfsv4stateid_t *stateidp, struct ucred *cred, NFSPROC_T *p, 1030 struct nfsvattr *rnap, int *attrflagp, void *stuff) 1031{ 1032 u_int32_t *tl; 1033 struct nfsrv_descript nfsd, *nd = &nfsd; 1034 int error; 1035 nfsattrbit_t attrbits; 1036 1037 *attrflagp = 0; 1038 NFSCL_REQSTART(nd, NFSPROC_SETATTR, vp); 1039 if (nd->nd_flag & ND_NFSV4) 1040 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID); 1041 vap->va_type = vnode_vtype(vp); 1042 nfscl_fillsattr(nd, vap, vp, NFSSATTR_FULL, 0); 1043 if (nd->nd_flag & ND_NFSV3) { 1044 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1045 *tl = newnfs_false; 1046 } else if (nd->nd_flag & ND_NFSV4) { 1047 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1048 *tl = txdr_unsigned(NFSV4OP_GETATTR); 1049 NFSGETATTR_ATTRBIT(&attrbits); 1050 (void) nfsrv_putattrbit(nd, &attrbits); 1051 } 1052 error = nfscl_request(nd, vp, p, cred, stuff); 1053 if (error) 1054 return (error); 1055 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) 1056 error = nfscl_wcc_data(nd, vp, rnap, attrflagp, NULL, stuff); 1057 if ((nd->nd_flag & ND_NFSV4) && !error) 1058 error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL); 1059 if (!(nd->nd_flag & ND_NFSV3) && !nd->nd_repstat && !error) 1060 error = nfscl_postop_attr(nd, rnap, attrflagp, stuff); 1061 mbuf_freem(nd->nd_mrep); 1062 if (nd->nd_repstat && !error) 1063 error = nd->nd_repstat; 1064 return (error); 1065} 1066 1067/* 1068 * nfs lookup rpc 1069 */ 1070APPLESTATIC int 1071nfsrpc_lookup(vnode_t dvp, char *name, int len, struct ucred *cred, 1072 NFSPROC_T *p, struct nfsvattr *dnap, struct nfsvattr *nap, 1073 struct nfsfh **nfhpp, int *attrflagp, int *dattrflagp, void *stuff) 1074{ 1075 u_int32_t *tl; 1076 struct nfsrv_descript nfsd, *nd = &nfsd; 1077 struct nfsmount *nmp; 1078 struct nfsnode *np; 1079 struct nfsfh *nfhp; 1080 nfsattrbit_t attrbits; 1081 int error = 0, lookupp = 0; 1082 1083 *attrflagp = 0; 1084 *dattrflagp = 0; 1085 if (vnode_vtype(dvp) != VDIR) 1086 return (ENOTDIR); 1087 nmp = VFSTONFS(vnode_mount(dvp)); 1088 if (len > NFS_MAXNAMLEN) 1089 return (ENAMETOOLONG); 1090 if (NFSHASNFSV4(nmp) && len == 1 && 1091 name[0] == '.') { 1092 /* 1093 * Just return the current dir's fh. 1094 */ 1095 np = VTONFS(dvp); 1096 MALLOC(nfhp, struct nfsfh *, sizeof (struct nfsfh) + 1097 np->n_fhp->nfh_len, M_NFSFH, M_WAITOK); 1098 nfhp->nfh_len = np->n_fhp->nfh_len; 1099 NFSBCOPY(np->n_fhp->nfh_fh, nfhp->nfh_fh, nfhp->nfh_len); 1100 *nfhpp = nfhp; 1101 return (0); 1102 } 1103 if (NFSHASNFSV4(nmp) && len == 2 && 1104 name[0] == '.' && name[1] == '.') { 1105 lookupp = 1; 1106 NFSCL_REQSTART(nd, NFSPROC_LOOKUPP, dvp); 1107 } else { 1108 NFSCL_REQSTART(nd, NFSPROC_LOOKUP, dvp); 1109 (void) nfsm_strtom(nd, name, len); 1110 } 1111 if (nd->nd_flag & ND_NFSV4) { 1112 NFSGETATTR_ATTRBIT(&attrbits); 1113 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1114 *tl++ = txdr_unsigned(NFSV4OP_GETFH); 1115 *tl = txdr_unsigned(NFSV4OP_GETATTR); 1116 (void) nfsrv_putattrbit(nd, &attrbits); 1117 } 1118 error = nfscl_request(nd, dvp, p, cred, stuff); 1119 if (error) 1120 return (error); 1121 if (nd->nd_repstat) { 1122 /* 1123 * When an NFSv4 Lookupp returns ENOENT, it means that 1124 * the lookup is at the root of an fs, so return this dir. 1125 */ 1126 if (nd->nd_repstat == NFSERR_NOENT && lookupp) { 1127 np = VTONFS(dvp); 1128 MALLOC(nfhp, struct nfsfh *, sizeof (struct nfsfh) + 1129 np->n_fhp->nfh_len, M_NFSFH, M_WAITOK); 1130 nfhp->nfh_len = np->n_fhp->nfh_len; 1131 NFSBCOPY(np->n_fhp->nfh_fh, nfhp->nfh_fh, nfhp->nfh_len); 1132 *nfhpp = nfhp; 1133 mbuf_freem(nd->nd_mrep); 1134 return (0); 1135 } 1136 if (nd->nd_flag & ND_NFSV3) 1137 error = nfscl_postop_attr(nd, dnap, dattrflagp, stuff); 1138 goto nfsmout; 1139 } 1140 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == ND_NFSV4) { 1141 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1142 if (*(tl + 1)) { 1143 nd->nd_flag |= ND_NOMOREDATA; 1144 goto nfsmout; 1145 } 1146 } 1147 error = nfsm_getfh(nd, nfhpp); 1148 if (error) 1149 goto nfsmout; 1150 1151 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 1152 if ((nd->nd_flag & ND_NFSV3) && !error) 1153 error = nfscl_postop_attr(nd, dnap, dattrflagp, stuff); 1154nfsmout: 1155 mbuf_freem(nd->nd_mrep); 1156 if (!error && nd->nd_repstat) 1157 error = nd->nd_repstat; 1158 return (error); 1159} 1160 1161/* 1162 * Do a readlink rpc. 1163 */ 1164APPLESTATIC int 1165nfsrpc_readlink(vnode_t vp, struct uio *uiop, struct ucred *cred, 1166 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff) 1167{ 1168 u_int32_t *tl; 1169 struct nfsrv_descript nfsd, *nd = &nfsd; 1170 struct nfsnode *np = VTONFS(vp); 1171 nfsattrbit_t attrbits; 1172 int error, len, cangetattr = 1; 1173 1174 *attrflagp = 0; 1175 NFSCL_REQSTART(nd, NFSPROC_READLINK, vp); 1176 if (nd->nd_flag & ND_NFSV4) { 1177 /* 1178 * And do a Getattr op. 1179 */ 1180 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1181 *tl = txdr_unsigned(NFSV4OP_GETATTR); 1182 NFSGETATTR_ATTRBIT(&attrbits); 1183 (void) nfsrv_putattrbit(nd, &attrbits); 1184 } 1185 error = nfscl_request(nd, vp, p, cred, stuff); 1186 if (error) 1187 return (error); 1188 if (nd->nd_flag & ND_NFSV3) 1189 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 1190 if (!nd->nd_repstat && !error) { 1191 NFSM_STRSIZ(len, NFS_MAXPATHLEN); 1192 /* 1193 * This seems weird to me, but must have been added to 1194 * FreeBSD for some reason. The only thing I can think of 1195 * is that there was/is some server that replies with 1196 * more link data than it should? 1197 */ 1198 if (len == NFS_MAXPATHLEN) { 1199 NFSLOCKNODE(np); 1200 if (np->n_size > 0 && np->n_size < NFS_MAXPATHLEN) { 1201 len = np->n_size; 1202 cangetattr = 0; 1203 } 1204 NFSUNLOCKNODE(np); 1205 } 1206 error = nfsm_mbufuio(nd, uiop, len); 1207 if ((nd->nd_flag & ND_NFSV4) && !error && cangetattr) 1208 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 1209 } 1210 if (nd->nd_repstat && !error) 1211 error = nd->nd_repstat; 1212nfsmout: 1213 mbuf_freem(nd->nd_mrep); 1214 return (error); 1215} 1216 1217/* 1218 * Read operation. 1219 */ 1220APPLESTATIC int 1221nfsrpc_read(vnode_t vp, struct uio *uiop, struct ucred *cred, 1222 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff) 1223{ 1224 int error, expireret = 0, retrycnt; 1225 u_int32_t clidrev = 0; 1226 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 1227 struct nfsnode *np = VTONFS(vp); 1228 struct ucred *newcred; 1229 struct nfsfh *nfhp = NULL; 1230 nfsv4stateid_t stateid; 1231 void *lckp; 1232 1233 if (nmp->nm_clp != NULL) 1234 clidrev = nmp->nm_clp->nfsc_clientidrev; 1235 newcred = cred; 1236 if (NFSHASNFSV4(nmp)) { 1237 nfhp = np->n_fhp; 1238 if (p == NULL) 1239 newcred = NFSNEWCRED(cred); 1240 } 1241 retrycnt = 0; 1242 do { 1243 lckp = NULL; 1244 if (NFSHASNFSV4(nmp)) 1245 (void)nfscl_getstateid(vp, nfhp->nfh_fh, nfhp->nfh_len, 1246 NFSV4OPEN_ACCESSREAD, newcred, p, &stateid, &lckp); 1247 error = nfsrpc_readrpc(vp, uiop, newcred, &stateid, p, nap, 1248 attrflagp, stuff); 1249 if (error == NFSERR_STALESTATEID) 1250 nfscl_initiate_recovery(nmp->nm_clp); 1251 if (lckp != NULL) 1252 nfscl_lockderef(lckp); 1253 if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 1254 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 1255 error == NFSERR_OLDSTATEID) { 1256 (void) nfs_catnap(PZERO, error, "nfs_read"); 1257 } else if ((error == NFSERR_EXPIRED || 1258 error == NFSERR_BADSTATEID) && clidrev != 0) { 1259 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p); 1260 } 1261 retrycnt++; 1262 } while (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 1263 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 1264 (error == NFSERR_OLDSTATEID && retrycnt < 20) || 1265 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) && 1266 expireret == 0 && clidrev != 0 && retrycnt < 4)); 1267 if (error && retrycnt >= 4) 1268 error = EIO; 1269 if (NFSHASNFSV4(nmp) && p == NULL) 1270 NFSFREECRED(newcred); 1271 return (error); 1272} 1273 1274/* 1275 * The actual read RPC. 1276 */ 1277static int 1278nfsrpc_readrpc(vnode_t vp, struct uio *uiop, struct ucred *cred, 1279 nfsv4stateid_t *stateidp, NFSPROC_T *p, struct nfsvattr *nap, 1280 int *attrflagp, void *stuff) 1281{ 1282 u_int32_t *tl; 1283 int error = 0, len, retlen, tsiz, eof = 0; 1284 struct nfsrv_descript nfsd; 1285 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 1286 struct nfsrv_descript *nd = &nfsd; 1287 1288 *attrflagp = 0; 1289 tsiz = uio_uio_resid(uiop); 1290 if (uiop->uio_offset + tsiz > 0xffffffff && 1291 !NFSHASNFSV3OR4(nmp)) 1292 return (EFBIG); 1293 nd->nd_mrep = NULL; 1294 while (tsiz > 0) { 1295 *attrflagp = 0; 1296 len = (tsiz > nmp->nm_rsize) ? nmp->nm_rsize : tsiz; 1297 NFSCL_REQSTART(nd, NFSPROC_READ, vp); 1298 if (nd->nd_flag & ND_NFSV4) 1299 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID); 1300 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED * 3); 1301 if (nd->nd_flag & ND_NFSV2) { 1302 *tl++ = txdr_unsigned(uiop->uio_offset); 1303 *tl++ = txdr_unsigned(len); 1304 *tl = 0; 1305 } else { 1306 txdr_hyper(uiop->uio_offset, tl); 1307 *(tl + 2) = txdr_unsigned(len); 1308 } 1309 /* 1310 * Since I can't do a Getattr for NFSv4 for Write, there 1311 * doesn't seem any point in doing one here, either. 1312 * (See the comment in nfsrpc_writerpc() for more info.) 1313 */ 1314 error = nfscl_request(nd, vp, p, cred, stuff); 1315 if (error) 1316 return (error); 1317 if (nd->nd_flag & ND_NFSV3) { 1318 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 1319 } else if (!nd->nd_repstat && (nd->nd_flag & ND_NFSV2)) { 1320 error = nfsm_loadattr(nd, nap); 1321 if (!error) 1322 *attrflagp = 1; 1323 } 1324 if (nd->nd_repstat || error) { 1325 if (!error) 1326 error = nd->nd_repstat; 1327 goto nfsmout; 1328 } 1329 if (nd->nd_flag & ND_NFSV3) { 1330 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1331 eof = fxdr_unsigned(int, *(tl + 1)); 1332 } else if (nd->nd_flag & ND_NFSV4) { 1333 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 1334 eof = fxdr_unsigned(int, *tl); 1335 } 1336 NFSM_STRSIZ(retlen, nmp->nm_rsize); 1337 error = nfsm_mbufuio(nd, uiop, retlen); 1338 if (error) 1339 goto nfsmout; 1340 mbuf_freem(nd->nd_mrep); 1341 nd->nd_mrep = NULL; 1342 tsiz -= retlen; 1343 if (!(nd->nd_flag & ND_NFSV2)) { 1344 if (eof || retlen == 0) 1345 tsiz = 0; 1346 } else if (retlen < len) 1347 tsiz = 0; 1348 } 1349 return (0); 1350nfsmout: 1351 if (nd->nd_mrep != NULL) 1352 mbuf_freem(nd->nd_mrep); 1353 return (error); 1354} 1355 1356/* 1357 * nfs write operation 1358 * When called_from_strategy != 0, it should return EIO for an error that 1359 * indicates recovery is in progress, so that the buffer will be left 1360 * dirty and be written back to the server later. If it loops around, 1361 * the recovery thread could get stuck waiting for the buffer and recovery 1362 * will then deadlock. 1363 */ 1364APPLESTATIC int 1365nfsrpc_write(vnode_t vp, struct uio *uiop, int *iomode, u_char *verfp, 1366 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, 1367 void *stuff, int called_from_strategy) 1368{ 1369 int error, expireret = 0, retrycnt, nostateid; 1370 u_int32_t clidrev = 0; 1371 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 1372 struct nfsnode *np = VTONFS(vp); 1373 struct ucred *newcred; 1374 struct nfsfh *nfhp = NULL; 1375 nfsv4stateid_t stateid; 1376 void *lckp; 1377 1378 if (nmp->nm_clp != NULL) 1379 clidrev = nmp->nm_clp->nfsc_clientidrev; 1380 newcred = cred; 1381 if (NFSHASNFSV4(nmp)) { 1382 if (p == NULL) 1383 newcred = NFSNEWCRED(cred); 1384 nfhp = np->n_fhp; 1385 } 1386 retrycnt = 0; 1387 do { 1388 lckp = NULL; 1389 nostateid = 0; 1390 if (NFSHASNFSV4(nmp)) { 1391 (void)nfscl_getstateid(vp, nfhp->nfh_fh, nfhp->nfh_len, 1392 NFSV4OPEN_ACCESSWRITE, newcred, p, &stateid, &lckp); 1393 if (stateid.other[0] == 0 && stateid.other[1] == 0 && 1394 stateid.other[2] == 0) { 1395 nostateid = 1; 1396 printf("stateid0 in write\n"); 1397 } 1398 } 1399 1400 /* 1401 * If there is no stateid for NFSv4, it means this is an 1402 * extraneous write after close. Basically a poorly 1403 * implemented buffer cache. Just don't do the write. 1404 */ 1405 if (nostateid) 1406 error = 0; 1407 else 1408 error = nfsrpc_writerpc(vp, uiop, iomode, verfp, 1409 newcred, &stateid, p, nap, attrflagp, stuff); 1410 if (error == NFSERR_STALESTATEID) 1411 nfscl_initiate_recovery(nmp->nm_clp); 1412 if (lckp != NULL) 1413 nfscl_lockderef(lckp); 1414 if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 1415 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 1416 error == NFSERR_OLDSTATEID) { 1417 (void) nfs_catnap(PZERO, error, "nfs_write"); 1418 } else if ((error == NFSERR_EXPIRED || 1419 error == NFSERR_BADSTATEID) && clidrev != 0) { 1420 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p); 1421 } 1422 retrycnt++; 1423 } while (error == NFSERR_GRACE || error == NFSERR_DELAY || 1424 ((error == NFSERR_STALESTATEID || 1425 error == NFSERR_STALEDONTRECOVER) && called_from_strategy == 0) || 1426 (error == NFSERR_OLDSTATEID && retrycnt < 20) || 1427 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) && 1428 expireret == 0 && clidrev != 0 && retrycnt < 4)); 1429 if (error != 0 && (retrycnt >= 4 || 1430 ((error == NFSERR_STALESTATEID || 1431 error == NFSERR_STALEDONTRECOVER) && called_from_strategy != 0))) 1432 error = EIO; 1433 if (NFSHASNFSV4(nmp) && p == NULL) 1434 NFSFREECRED(newcred); 1435 return (error); 1436} 1437 1438/* 1439 * The actual write RPC. 1440 */ 1441static int 1442nfsrpc_writerpc(vnode_t vp, struct uio *uiop, int *iomode, 1443 u_char *verfp, struct ucred *cred, nfsv4stateid_t *stateidp, 1444 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff) 1445{ 1446 u_int32_t *tl; 1447 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 1448 struct nfsnode *np = VTONFS(vp); 1449 int error = 0, len, tsiz, rlen, commit, committed = NFSWRITE_FILESYNC; 1450 int wccflag = 0, wsize; 1451 int32_t backup; 1452 struct nfsrv_descript nfsd; 1453 struct nfsrv_descript *nd = &nfsd; 1454 nfsattrbit_t attrbits; 1455 1456 KASSERT(uiop->uio_iovcnt == 1, ("nfs: writerpc iovcnt > 1")); 1457 *attrflagp = 0; 1458 tsiz = uio_uio_resid(uiop); 1459 NFSLOCKMNT(nmp); 1460 if (uiop->uio_offset + tsiz > 0xffffffff && 1461 !NFSHASNFSV3OR4(nmp)) { 1462 NFSUNLOCKMNT(nmp); 1463 return (EFBIG); 1464 } 1465 wsize = nmp->nm_wsize; 1466 NFSUNLOCKMNT(nmp); 1467 nd->nd_mrep = NULL; /* NFSv2 sometimes does a write with */ 1468 nd->nd_repstat = 0; /* uio_resid == 0, so the while is not done */ 1469 while (tsiz > 0) { 1470 nmp = VFSTONFS(vnode_mount(vp)); 1471 if (nmp == NULL) { 1472 error = ENXIO; 1473 goto nfsmout; 1474 } 1475 *attrflagp = 0; 1476 len = (tsiz > wsize) ? wsize : tsiz; 1477 NFSCL_REQSTART(nd, NFSPROC_WRITE, vp); 1478 if (nd->nd_flag & ND_NFSV4) { 1479 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID); 1480 NFSM_BUILD(tl, u_int32_t *, NFSX_HYPER+2*NFSX_UNSIGNED); 1481 txdr_hyper(uiop->uio_offset, tl); 1482 tl += 2; 1483 *tl++ = txdr_unsigned(*iomode); 1484 *tl = txdr_unsigned(len); 1485 } else if (nd->nd_flag & ND_NFSV3) { 1486 NFSM_BUILD(tl, u_int32_t *, NFSX_HYPER+3*NFSX_UNSIGNED); 1487 txdr_hyper(uiop->uio_offset, tl); 1488 tl += 2; 1489 *tl++ = txdr_unsigned(len); 1490 *tl++ = txdr_unsigned(*iomode); 1491 *tl = txdr_unsigned(len); 1492 } else { 1493 u_int32_t x; 1494 1495 NFSM_BUILD(tl, u_int32_t *, 4 * NFSX_UNSIGNED); 1496 /* 1497 * Not sure why someone changed this, since the 1498 * RFC clearly states that "beginoffset" and 1499 * "totalcount" are ignored, but it wouldn't 1500 * surprise me if there's a busted server out there. 1501 */ 1502 /* Set both "begin" and "current" to non-garbage. */ 1503 x = txdr_unsigned((u_int32_t)uiop->uio_offset); 1504 *tl++ = x; /* "begin offset" */ 1505 *tl++ = x; /* "current offset" */ 1506 x = txdr_unsigned(len); 1507 *tl++ = x; /* total to this offset */ 1508 *tl = x; /* size of this write */ 1509 1510 } 1511 nfsm_uiombuf(nd, uiop, len); 1512 /* 1513 * Although it is tempting to do a normal Getattr Op in the 1514 * NFSv4 compound, the result can be a nearly hung client 1515 * system if the Getattr asks for Owner and/or OwnerGroup. 1516 * It occurs when the client can't map either the Owner or 1517 * Owner_group name in the Getattr reply to a uid/gid. When 1518 * there is a cache miss, the kernel does an upcall to the 1519 * nfsuserd. Then, it can try and read the local /etc/passwd 1520 * or /etc/group file. It can then block in getnewbuf(), 1521 * waiting for dirty writes to be pushed to the NFS server. 1522 * The only reason this doesn't result in a complete 1523 * deadlock, is that the upcall times out and allows 1524 * the write to complete. However, progress is so slow 1525 * that it might just as well be deadlocked. 1526 * So, we just get the attributes that change with each 1527 * write Op. 1528 * nb: nfscl_loadattrcache() needs to be told that these 1529 * partial attributes from a write rpc are being 1530 * passed in, via a argument flag. 1531 */ 1532 if (nd->nd_flag & ND_NFSV4) { 1533 NFSWRITEGETATTR_ATTRBIT(&attrbits); 1534 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1535 *tl = txdr_unsigned(NFSV4OP_GETATTR); 1536 (void) nfsrv_putattrbit(nd, &attrbits); 1537 } 1538 error = nfscl_request(nd, vp, p, cred, stuff); 1539 if (error) 1540 return (error); 1541 if (nd->nd_repstat) { 1542 /* 1543 * In case the rpc gets retried, roll 1544 * the uio fileds changed by nfsm_uiombuf() 1545 * back. 1546 */ 1547 uiop->uio_offset -= len; 1548 uio_uio_resid_add(uiop, len); 1549 uio_iov_base_add(uiop, -len); 1550 uio_iov_len_add(uiop, len); 1551 } 1552 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) { 1553 error = nfscl_wcc_data(nd, vp, nap, attrflagp, 1554 &wccflag, stuff); 1555 if (error) 1556 goto nfsmout; 1557 } 1558 if (!nd->nd_repstat) { 1559 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) { 1560 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED 1561 + NFSX_VERF); 1562 rlen = fxdr_unsigned(int, *tl++); 1563 if (rlen == 0) { 1564 error = NFSERR_IO; 1565 goto nfsmout; 1566 } else if (rlen < len) { 1567 backup = len - rlen; 1568 uio_iov_base_add(uiop, -(backup)); 1569 uio_iov_len_add(uiop, backup); 1570 uiop->uio_offset -= backup; 1571 uio_uio_resid_add(uiop, backup); 1572 len = rlen; 1573 } 1574 commit = fxdr_unsigned(int, *tl++); 1575 1576 /* 1577 * Return the lowest committment level 1578 * obtained by any of the RPCs. 1579 */ 1580 if (committed == NFSWRITE_FILESYNC) 1581 committed = commit; 1582 else if (committed == NFSWRITE_DATASYNC && 1583 commit == NFSWRITE_UNSTABLE) 1584 committed = commit; 1585 if (verfp != NULL) 1586 NFSBCOPY((caddr_t)tl, verfp, NFSX_VERF); 1587 NFSLOCKMNT(nmp); 1588 if (!NFSHASWRITEVERF(nmp)) { 1589 NFSBCOPY((caddr_t)tl, 1590 (caddr_t)&nmp->nm_verf[0], 1591 NFSX_VERF); 1592 NFSSETWRITEVERF(nmp); 1593 } 1594 NFSUNLOCKMNT(nmp); 1595 } 1596 if (nd->nd_flag & ND_NFSV4) 1597 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1598 if (nd->nd_flag & (ND_NFSV2 | ND_NFSV4)) { 1599 error = nfsm_loadattr(nd, nap); 1600 if (!error) 1601 *attrflagp = NFS_LATTR_NOSHRINK; 1602 } 1603 } else { 1604 error = nd->nd_repstat; 1605 } 1606 if (error) 1607 goto nfsmout; 1608 NFSWRITERPC_SETTIME(wccflag, np, (nd->nd_flag & ND_NFSV4)); 1609 mbuf_freem(nd->nd_mrep); 1610 nd->nd_mrep = NULL; 1611 tsiz -= len; 1612 } 1613nfsmout: 1614 if (nd->nd_mrep != NULL) 1615 mbuf_freem(nd->nd_mrep); 1616 *iomode = committed; 1617 if (nd->nd_repstat && !error) 1618 error = nd->nd_repstat; 1619 return (error); 1620} 1621 1622/* 1623 * nfs mknod rpc 1624 * For NFS v2 this is a kludge. Use a create rpc but with the IFMT bits of the 1625 * mode set to specify the file type and the size field for rdev. 1626 */ 1627APPLESTATIC int 1628nfsrpc_mknod(vnode_t dvp, char *name, int namelen, struct vattr *vap, 1629 u_int32_t rdev, enum vtype vtyp, struct ucred *cred, NFSPROC_T *p, 1630 struct nfsvattr *dnap, struct nfsvattr *nnap, struct nfsfh **nfhpp, 1631 int *attrflagp, int *dattrflagp, void *dstuff) 1632{ 1633 u_int32_t *tl; 1634 int error = 0; 1635 struct nfsrv_descript nfsd, *nd = &nfsd; 1636 nfsattrbit_t attrbits; 1637 1638 *nfhpp = NULL; 1639 *attrflagp = 0; 1640 *dattrflagp = 0; 1641 if (namelen > NFS_MAXNAMLEN) 1642 return (ENAMETOOLONG); 1643 NFSCL_REQSTART(nd, NFSPROC_MKNOD, dvp); 1644 if (nd->nd_flag & ND_NFSV4) { 1645 if (vtyp == VBLK || vtyp == VCHR) { 1646 NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 1647 *tl++ = vtonfsv34_type(vtyp); 1648 *tl++ = txdr_unsigned(NFSMAJOR(rdev)); 1649 *tl = txdr_unsigned(NFSMINOR(rdev)); 1650 } else { 1651 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1652 *tl = vtonfsv34_type(vtyp); 1653 } 1654 } 1655 (void) nfsm_strtom(nd, name, namelen); 1656 if (nd->nd_flag & ND_NFSV3) { 1657 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1658 *tl = vtonfsv34_type(vtyp); 1659 } 1660 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) 1661 nfscl_fillsattr(nd, vap, dvp, 0, 0); 1662 if ((nd->nd_flag & ND_NFSV3) && 1663 (vtyp == VCHR || vtyp == VBLK)) { 1664 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1665 *tl++ = txdr_unsigned(NFSMAJOR(rdev)); 1666 *tl = txdr_unsigned(NFSMINOR(rdev)); 1667 } 1668 if (nd->nd_flag & ND_NFSV4) { 1669 NFSGETATTR_ATTRBIT(&attrbits); 1670 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1671 *tl++ = txdr_unsigned(NFSV4OP_GETFH); 1672 *tl = txdr_unsigned(NFSV4OP_GETATTR); 1673 (void) nfsrv_putattrbit(nd, &attrbits); 1674 } 1675 if (nd->nd_flag & ND_NFSV2) 1676 nfscl_fillsattr(nd, vap, dvp, NFSSATTR_SIZERDEV, rdev); 1677 error = nfscl_request(nd, dvp, p, cred, dstuff); 1678 if (error) 1679 return (error); 1680 if (nd->nd_flag & ND_NFSV4) 1681 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 1682 if (!nd->nd_repstat) { 1683 if (nd->nd_flag & ND_NFSV4) { 1684 NFSM_DISSECT(tl, u_int32_t *, 5 * NFSX_UNSIGNED); 1685 error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL); 1686 if (error) 1687 goto nfsmout; 1688 } 1689 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp); 1690 if (error) 1691 goto nfsmout; 1692 } 1693 if (nd->nd_flag & ND_NFSV3) 1694 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 1695 if (!error && nd->nd_repstat) 1696 error = nd->nd_repstat; 1697nfsmout: 1698 mbuf_freem(nd->nd_mrep); 1699 return (error); 1700} 1701 1702/* 1703 * nfs file create call 1704 * Mostly just call the approriate routine. (I separated out v4, so that 1705 * error recovery wouldn't be as difficult.) 1706 */ 1707APPLESTATIC int 1708nfsrpc_create(vnode_t dvp, char *name, int namelen, struct vattr *vap, 1709 nfsquad_t cverf, int fmode, struct ucred *cred, NFSPROC_T *p, 1710 struct nfsvattr *dnap, struct nfsvattr *nnap, struct nfsfh **nfhpp, 1711 int *attrflagp, int *dattrflagp, void *dstuff) 1712{ 1713 int error = 0, newone, expireret = 0, retrycnt, unlocked; 1714 struct nfsclowner *owp; 1715 struct nfscldeleg *dp; 1716 struct nfsmount *nmp = VFSTONFS(vnode_mount(dvp)); 1717 u_int32_t clidrev; 1718 1719 if (NFSHASNFSV4(nmp)) { 1720 retrycnt = 0; 1721 do { 1722 dp = NULL; 1723 error = nfscl_open(dvp, NULL, 0, (NFSV4OPEN_ACCESSWRITE | 1724 NFSV4OPEN_ACCESSREAD), 0, cred, p, &owp, NULL, &newone, 1725 NULL, 1); 1726 if (error) 1727 return (error); 1728 if (nmp->nm_clp != NULL) 1729 clidrev = nmp->nm_clp->nfsc_clientidrev; 1730 else 1731 clidrev = 0; 1732 error = nfsrpc_createv4(dvp, name, namelen, vap, cverf, fmode, 1733 owp, &dp, cred, p, dnap, nnap, nfhpp, attrflagp, dattrflagp, 1734 dstuff, &unlocked); 1735 /* 1736 * There is no need to invalidate cached attributes here, 1737 * since new post-delegation issue attributes are always 1738 * returned by nfsrpc_createv4() and these will update the 1739 * attribute cache. 1740 */ 1741 if (dp != NULL) 1742 (void) nfscl_deleg(nmp->nm_mountp, owp->nfsow_clp, 1743 (*nfhpp)->nfh_fh, (*nfhpp)->nfh_len, cred, p, &dp); 1744 nfscl_ownerrelease(owp, error, newone, unlocked); 1745 if (error == NFSERR_GRACE || error == NFSERR_STALECLIENTID || 1746 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY) { 1747 (void) nfs_catnap(PZERO, error, "nfs_open"); 1748 } else if ((error == NFSERR_EXPIRED || 1749 error == NFSERR_BADSTATEID) && clidrev != 0) { 1750 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p); 1751 retrycnt++; 1752 } 1753 } while (error == NFSERR_GRACE || error == NFSERR_STALECLIENTID || 1754 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 1755 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) && 1756 expireret == 0 && clidrev != 0 && retrycnt < 4)); 1757 if (error && retrycnt >= 4) 1758 error = EIO; 1759 } else { 1760 error = nfsrpc_createv23(dvp, name, namelen, vap, cverf, 1761 fmode, cred, p, dnap, nnap, nfhpp, attrflagp, dattrflagp, 1762 dstuff); 1763 } 1764 return (error); 1765} 1766 1767/* 1768 * The create rpc for v2 and 3. 1769 */ 1770static int 1771nfsrpc_createv23(vnode_t dvp, char *name, int namelen, struct vattr *vap, 1772 nfsquad_t cverf, int fmode, struct ucred *cred, NFSPROC_T *p, 1773 struct nfsvattr *dnap, struct nfsvattr *nnap, struct nfsfh **nfhpp, 1774 int *attrflagp, int *dattrflagp, void *dstuff) 1775{ 1776 u_int32_t *tl; 1777 int error = 0; 1778 struct nfsrv_descript nfsd, *nd = &nfsd; 1779 1780 *nfhpp = NULL; 1781 *attrflagp = 0; 1782 *dattrflagp = 0; 1783 if (namelen > NFS_MAXNAMLEN) 1784 return (ENAMETOOLONG); 1785 NFSCL_REQSTART(nd, NFSPROC_CREATE, dvp); 1786 (void) nfsm_strtom(nd, name, namelen); 1787 if (nd->nd_flag & ND_NFSV3) { 1788 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1789 if (fmode & O_EXCL) { 1790 *tl = txdr_unsigned(NFSCREATE_EXCLUSIVE); 1791 NFSM_BUILD(tl, u_int32_t *, NFSX_VERF); 1792 *tl++ = cverf.lval[0]; 1793 *tl = cverf.lval[1]; 1794 } else { 1795 *tl = txdr_unsigned(NFSCREATE_UNCHECKED); 1796 nfscl_fillsattr(nd, vap, dvp, 0, 0); 1797 } 1798 } else { 1799 nfscl_fillsattr(nd, vap, dvp, NFSSATTR_SIZE0, 0); 1800 } 1801 error = nfscl_request(nd, dvp, p, cred, dstuff); 1802 if (error) 1803 return (error); 1804 if (nd->nd_repstat == 0) { 1805 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp); 1806 if (error) 1807 goto nfsmout; 1808 } 1809 if (nd->nd_flag & ND_NFSV3) 1810 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 1811 if (nd->nd_repstat != 0 && error == 0) 1812 error = nd->nd_repstat; 1813nfsmout: 1814 mbuf_freem(nd->nd_mrep); 1815 return (error); 1816} 1817 1818static int 1819nfsrpc_createv4(vnode_t dvp, char *name, int namelen, struct vattr *vap, 1820 nfsquad_t cverf, int fmode, struct nfsclowner *owp, struct nfscldeleg **dpp, 1821 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap, 1822 struct nfsvattr *nnap, struct nfsfh **nfhpp, int *attrflagp, 1823 int *dattrflagp, void *dstuff, int *unlockedp) 1824{ 1825 u_int32_t *tl; 1826 int error = 0, deleg, newone, ret, acesize, limitby; 1827 struct nfsrv_descript nfsd, *nd = &nfsd; 1828 struct nfsclopen *op; 1829 struct nfscldeleg *dp = NULL; 1830 struct nfsnode *np; 1831 struct nfsfh *nfhp; 1832 nfsattrbit_t attrbits; 1833 nfsv4stateid_t stateid; 1834 u_int32_t rflags; 1835 1836 *unlockedp = 0; 1837 *nfhpp = NULL; 1838 *dpp = NULL; 1839 *attrflagp = 0; 1840 *dattrflagp = 0; 1841 if (namelen > NFS_MAXNAMLEN) 1842 return (ENAMETOOLONG); 1843 NFSCL_REQSTART(nd, NFSPROC_CREATE, dvp); 1844 /* 1845 * For V4, this is actually an Open op. 1846 */ 1847 NFSM_BUILD(tl, u_int32_t *, 5 * NFSX_UNSIGNED); 1848 *tl++ = txdr_unsigned(owp->nfsow_seqid); 1849 *tl++ = txdr_unsigned(NFSV4OPEN_ACCESSWRITE | 1850 NFSV4OPEN_ACCESSREAD); 1851 *tl++ = txdr_unsigned(NFSV4OPEN_DENYNONE); 1852 *tl++ = owp->nfsow_clp->nfsc_clientid.lval[0]; 1853 *tl = owp->nfsow_clp->nfsc_clientid.lval[1]; 1854 (void) nfsm_strtom(nd, owp->nfsow_owner, NFSV4CL_LOCKNAMELEN); 1855 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1856 *tl++ = txdr_unsigned(NFSV4OPEN_CREATE); 1857 if (fmode & O_EXCL) { 1858 *tl = txdr_unsigned(NFSCREATE_EXCLUSIVE); 1859 NFSM_BUILD(tl, u_int32_t *, NFSX_VERF); 1860 *tl++ = cverf.lval[0]; 1861 *tl = cverf.lval[1]; 1862 } else { 1863 *tl = txdr_unsigned(NFSCREATE_UNCHECKED); 1864 nfscl_fillsattr(nd, vap, dvp, 0, 0); 1865 } 1866 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1867 *tl = txdr_unsigned(NFSV4OPEN_CLAIMNULL); 1868 (void) nfsm_strtom(nd, name, namelen); 1869 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1870 *tl++ = txdr_unsigned(NFSV4OP_GETFH); 1871 *tl = txdr_unsigned(NFSV4OP_GETATTR); 1872 NFSGETATTR_ATTRBIT(&attrbits); 1873 (void) nfsrv_putattrbit(nd, &attrbits); 1874 error = nfscl_request(nd, dvp, p, cred, dstuff); 1875 if (error) 1876 return (error); 1877 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 1878 if (error) 1879 goto nfsmout; 1880 NFSCL_INCRSEQID(owp->nfsow_seqid, nd); 1881 if (nd->nd_repstat == 0) { 1882 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID + 1883 6 * NFSX_UNSIGNED); 1884 stateid.seqid = *tl++; 1885 stateid.other[0] = *tl++; 1886 stateid.other[1] = *tl++; 1887 stateid.other[2] = *tl; 1888 rflags = fxdr_unsigned(u_int32_t, *(tl + 6)); 1889 (void) nfsrv_getattrbits(nd, &attrbits, NULL, NULL); 1890 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 1891 deleg = fxdr_unsigned(int, *tl); 1892 if (deleg == NFSV4OPEN_DELEGATEREAD || 1893 deleg == NFSV4OPEN_DELEGATEWRITE) { 1894 if (!(owp->nfsow_clp->nfsc_flags & 1895 NFSCLFLAGS_FIRSTDELEG)) 1896 owp->nfsow_clp->nfsc_flags |= 1897 (NFSCLFLAGS_FIRSTDELEG | NFSCLFLAGS_GOTDELEG); 1898 MALLOC(dp, struct nfscldeleg *, 1899 sizeof (struct nfscldeleg) + NFSX_V4FHMAX, 1900 M_NFSCLDELEG, M_WAITOK); 1901 LIST_INIT(&dp->nfsdl_owner); 1902 LIST_INIT(&dp->nfsdl_lock); 1903 dp->nfsdl_clp = owp->nfsow_clp; 1904 newnfs_copyincred(cred, &dp->nfsdl_cred); 1905 nfscl_lockinit(&dp->nfsdl_rwlock); 1906 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID + 1907 NFSX_UNSIGNED); 1908 dp->nfsdl_stateid.seqid = *tl++; 1909 dp->nfsdl_stateid.other[0] = *tl++; 1910 dp->nfsdl_stateid.other[1] = *tl++; 1911 dp->nfsdl_stateid.other[2] = *tl++; 1912 ret = fxdr_unsigned(int, *tl); 1913 if (deleg == NFSV4OPEN_DELEGATEWRITE) { 1914 dp->nfsdl_flags = NFSCLDL_WRITE; 1915 /* 1916 * Indicates how much the file can grow. 1917 */ 1918 NFSM_DISSECT(tl, u_int32_t *, 1919 3 * NFSX_UNSIGNED); 1920 limitby = fxdr_unsigned(int, *tl++); 1921 switch (limitby) { 1922 case NFSV4OPEN_LIMITSIZE: 1923 dp->nfsdl_sizelimit = fxdr_hyper(tl); 1924 break; 1925 case NFSV4OPEN_LIMITBLOCKS: 1926 dp->nfsdl_sizelimit = 1927 fxdr_unsigned(u_int64_t, *tl++); 1928 dp->nfsdl_sizelimit *= 1929 fxdr_unsigned(u_int64_t, *tl); 1930 break; 1931 default: 1932 error = NFSERR_BADXDR; 1933 goto nfsmout; 1934 }; 1935 } else { 1936 dp->nfsdl_flags = NFSCLDL_READ; 1937 } 1938 if (ret) 1939 dp->nfsdl_flags |= NFSCLDL_RECALL; 1940 error = nfsrv_dissectace(nd, &dp->nfsdl_ace, &ret, 1941 &acesize, p); 1942 if (error) 1943 goto nfsmout; 1944 } else if (deleg != NFSV4OPEN_DELEGATENONE) { 1945 error = NFSERR_BADXDR; 1946 goto nfsmout; 1947 } 1948 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp); 1949 if (error) 1950 goto nfsmout; 1951 if (dp != NULL && *attrflagp) { 1952 dp->nfsdl_change = nnap->na_filerev; 1953 dp->nfsdl_modtime = nnap->na_mtime; 1954 dp->nfsdl_flags |= NFSCLDL_MODTIMESET; 1955 } 1956 /* 1957 * We can now complete the Open state. 1958 */ 1959 nfhp = *nfhpp; 1960 if (dp != NULL) { 1961 dp->nfsdl_fhlen = nfhp->nfh_len; 1962 NFSBCOPY(nfhp->nfh_fh, dp->nfsdl_fh, nfhp->nfh_len); 1963 } 1964 /* 1965 * Get an Open structure that will be 1966 * attached to the OpenOwner, acquired already. 1967 */ 1968 error = nfscl_open(dvp, nfhp->nfh_fh, nfhp->nfh_len, 1969 (NFSV4OPEN_ACCESSWRITE | NFSV4OPEN_ACCESSREAD), 0, 1970 cred, p, NULL, &op, &newone, NULL, 0); 1971 if (error) 1972 goto nfsmout; 1973 op->nfso_stateid = stateid; 1974 newnfs_copyincred(cred, &op->nfso_cred); 1975 if ((rflags & NFSV4OPEN_RESULTCONFIRM)) { 1976 do { 1977 ret = nfsrpc_openconfirm(dvp, nfhp->nfh_fh, 1978 nfhp->nfh_len, op, cred, p); 1979 if (ret == NFSERR_DELAY) 1980 (void) nfs_catnap(PZERO, ret, "nfs_create"); 1981 } while (ret == NFSERR_DELAY); 1982 error = ret; 1983 } 1984 1985 /* 1986 * If the server is handing out delegations, but we didn't 1987 * get one because an OpenConfirm was required, try the 1988 * Open again, to get a delegation. This is a harmless no-op, 1989 * from a server's point of view. 1990 */ 1991 if ((rflags & NFSV4OPEN_RESULTCONFIRM) && 1992 (owp->nfsow_clp->nfsc_flags & NFSCLFLAGS_GOTDELEG) && 1993 !error && dp == NULL) { 1994 np = VTONFS(dvp); 1995 do { 1996 ret = nfsrpc_openrpc(VFSTONFS(vnode_mount(dvp)), dvp, 1997 np->n_fhp->nfh_fh, np->n_fhp->nfh_len, 1998 nfhp->nfh_fh, nfhp->nfh_len, 1999 (NFSV4OPEN_ACCESSWRITE | NFSV4OPEN_ACCESSREAD), op, 2000 name, namelen, &dp, 0, 0x0, cred, p, 0, 1); 2001 if (ret == NFSERR_DELAY) 2002 (void) nfs_catnap(PZERO, ret, "nfs_crt2"); 2003 } while (ret == NFSERR_DELAY); 2004 if (ret) { 2005 if (dp != NULL) 2006 FREE((caddr_t)dp, M_NFSCLDELEG); 2007 if (ret == NFSERR_STALECLIENTID || 2008 ret == NFSERR_STALEDONTRECOVER) 2009 error = ret; 2010 } 2011 } 2012 nfscl_openrelease(op, error, newone); 2013 *unlockedp = 1; 2014 } 2015 if (nd->nd_repstat != 0 && error == 0) 2016 error = nd->nd_repstat; 2017 if (error == NFSERR_STALECLIENTID) 2018 nfscl_initiate_recovery(owp->nfsow_clp); 2019nfsmout: 2020 if (!error) 2021 *dpp = dp; 2022 else if (dp != NULL) 2023 FREE((caddr_t)dp, M_NFSCLDELEG); 2024 mbuf_freem(nd->nd_mrep); 2025 return (error); 2026} 2027 2028/* 2029 * Nfs remove rpc 2030 */ 2031APPLESTATIC int 2032nfsrpc_remove(vnode_t dvp, char *name, int namelen, vnode_t vp, 2033 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap, int *dattrflagp, 2034 void *dstuff) 2035{ 2036 u_int32_t *tl; 2037 struct nfsrv_descript nfsd, *nd = &nfsd; 2038 struct nfsnode *np; 2039 struct nfsmount *nmp; 2040 nfsv4stateid_t dstateid; 2041 int error, ret = 0, i; 2042 2043 *dattrflagp = 0; 2044 if (namelen > NFS_MAXNAMLEN) 2045 return (ENAMETOOLONG); 2046 nmp = VFSTONFS(vnode_mount(dvp)); 2047tryagain: 2048 if (NFSHASNFSV4(nmp) && ret == 0) { 2049 ret = nfscl_removedeleg(vp, p, &dstateid); 2050 if (ret == 1) { 2051 NFSCL_REQSTART(nd, NFSPROC_RETDELEGREMOVE, vp); 2052 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID + 2053 NFSX_UNSIGNED); 2054 *tl++ = dstateid.seqid; 2055 *tl++ = dstateid.other[0]; 2056 *tl++ = dstateid.other[1]; 2057 *tl++ = dstateid.other[2]; 2058 *tl = txdr_unsigned(NFSV4OP_PUTFH); 2059 np = VTONFS(dvp); 2060 (void) nfsm_fhtom(nd, np->n_fhp->nfh_fh, 2061 np->n_fhp->nfh_len, 0); 2062 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2063 *tl = txdr_unsigned(NFSV4OP_REMOVE); 2064 } 2065 } else { 2066 ret = 0; 2067 } 2068 if (ret == 0) 2069 NFSCL_REQSTART(nd, NFSPROC_REMOVE, dvp); 2070 (void) nfsm_strtom(nd, name, namelen); 2071 error = nfscl_request(nd, dvp, p, cred, dstuff); 2072 if (error) 2073 return (error); 2074 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) { 2075 /* For NFSv4, parse out any Delereturn replies. */ 2076 if (ret > 0 && nd->nd_repstat != 0 && 2077 (nd->nd_flag & ND_NOMOREDATA)) { 2078 /* 2079 * If the Delegreturn failed, try again without 2080 * it. The server will Recall, as required. 2081 */ 2082 mbuf_freem(nd->nd_mrep); 2083 goto tryagain; 2084 } 2085 for (i = 0; i < (ret * 2); i++) { 2086 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == 2087 ND_NFSV4) { 2088 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2089 if (*(tl + 1)) 2090 nd->nd_flag |= ND_NOMOREDATA; 2091 } 2092 } 2093 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 2094 } 2095 if (nd->nd_repstat && !error) 2096 error = nd->nd_repstat; 2097nfsmout: 2098 mbuf_freem(nd->nd_mrep); 2099 return (error); 2100} 2101 2102/* 2103 * Do an nfs rename rpc. 2104 */ 2105APPLESTATIC int 2106nfsrpc_rename(vnode_t fdvp, vnode_t fvp, char *fnameptr, int fnamelen, 2107 vnode_t tdvp, vnode_t tvp, char *tnameptr, int tnamelen, struct ucred *cred, 2108 NFSPROC_T *p, struct nfsvattr *fnap, struct nfsvattr *tnap, 2109 int *fattrflagp, int *tattrflagp, void *fstuff, void *tstuff) 2110{ 2111 u_int32_t *tl; 2112 struct nfsrv_descript nfsd, *nd = &nfsd; 2113 struct nfsmount *nmp; 2114 struct nfsnode *np; 2115 nfsattrbit_t attrbits; 2116 nfsv4stateid_t fdstateid, tdstateid; 2117 int error = 0, ret = 0, gottd = 0, gotfd = 0, i; 2118 2119 *fattrflagp = 0; 2120 *tattrflagp = 0; 2121 nmp = VFSTONFS(vnode_mount(fdvp)); 2122 if (fnamelen > NFS_MAXNAMLEN || tnamelen > NFS_MAXNAMLEN) 2123 return (ENAMETOOLONG); 2124tryagain: 2125 if (NFSHASNFSV4(nmp) && ret == 0) { 2126 ret = nfscl_renamedeleg(fvp, &fdstateid, &gotfd, tvp, 2127 &tdstateid, &gottd, p); 2128 if (gotfd && gottd) { 2129 NFSCL_REQSTART(nd, NFSPROC_RETDELEGRENAME2, fvp); 2130 } else if (gotfd) { 2131 NFSCL_REQSTART(nd, NFSPROC_RETDELEGRENAME1, fvp); 2132 } else if (gottd) { 2133 NFSCL_REQSTART(nd, NFSPROC_RETDELEGRENAME1, tvp); 2134 } 2135 if (gotfd) { 2136 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID); 2137 *tl++ = fdstateid.seqid; 2138 *tl++ = fdstateid.other[0]; 2139 *tl++ = fdstateid.other[1]; 2140 *tl = fdstateid.other[2]; 2141 if (gottd) { 2142 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2143 *tl = txdr_unsigned(NFSV4OP_PUTFH); 2144 np = VTONFS(tvp); 2145 (void) nfsm_fhtom(nd, np->n_fhp->nfh_fh, 2146 np->n_fhp->nfh_len, 0); 2147 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2148 *tl = txdr_unsigned(NFSV4OP_DELEGRETURN); 2149 } 2150 } 2151 if (gottd) { 2152 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID); 2153 *tl++ = tdstateid.seqid; 2154 *tl++ = tdstateid.other[0]; 2155 *tl++ = tdstateid.other[1]; 2156 *tl = tdstateid.other[2]; 2157 } 2158 if (ret > 0) { 2159 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2160 *tl = txdr_unsigned(NFSV4OP_PUTFH); 2161 np = VTONFS(fdvp); 2162 (void) nfsm_fhtom(nd, np->n_fhp->nfh_fh, 2163 np->n_fhp->nfh_len, 0); 2164 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2165 *tl = txdr_unsigned(NFSV4OP_SAVEFH); 2166 } 2167 } else { 2168 ret = 0; 2169 } 2170 if (ret == 0) 2171 NFSCL_REQSTART(nd, NFSPROC_RENAME, fdvp); 2172 if (nd->nd_flag & ND_NFSV4) { 2173 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2174 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2175 NFSWCCATTR_ATTRBIT(&attrbits); 2176 (void) nfsrv_putattrbit(nd, &attrbits); 2177 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2178 *tl = txdr_unsigned(NFSV4OP_PUTFH); 2179 (void) nfsm_fhtom(nd, VTONFS(tdvp)->n_fhp->nfh_fh, 2180 VTONFS(tdvp)->n_fhp->nfh_len, 0); 2181 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2182 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2183 (void) nfsrv_putattrbit(nd, &attrbits); 2184 nd->nd_flag |= ND_V4WCCATTR; 2185 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2186 *tl = txdr_unsigned(NFSV4OP_RENAME); 2187 } 2188 (void) nfsm_strtom(nd, fnameptr, fnamelen); 2189 if (!(nd->nd_flag & ND_NFSV4)) 2190 (void) nfsm_fhtom(nd, VTONFS(tdvp)->n_fhp->nfh_fh, 2191 VTONFS(tdvp)->n_fhp->nfh_len, 0); 2192 (void) nfsm_strtom(nd, tnameptr, tnamelen); 2193 error = nfscl_request(nd, fdvp, p, cred, fstuff); 2194 if (error) 2195 return (error); 2196 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) { 2197 /* For NFSv4, parse out any Delereturn replies. */ 2198 if (ret > 0 && nd->nd_repstat != 0 && 2199 (nd->nd_flag & ND_NOMOREDATA)) { 2200 /* 2201 * If the Delegreturn failed, try again without 2202 * it. The server will Recall, as required. 2203 */ 2204 mbuf_freem(nd->nd_mrep); 2205 goto tryagain; 2206 } 2207 for (i = 0; i < (ret * 2); i++) { 2208 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == 2209 ND_NFSV4) { 2210 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2211 if (*(tl + 1)) { 2212 if (i == 0 && ret > 1) { 2213 /* 2214 * If the Delegreturn failed, try again 2215 * without it. The server will Recall, as 2216 * required. 2217 * If ret > 1, the first iteration of this 2218 * loop is the second DelegReturn result. 2219 */ 2220 mbuf_freem(nd->nd_mrep); 2221 goto tryagain; 2222 } else { 2223 nd->nd_flag |= ND_NOMOREDATA; 2224 } 2225 } 2226 } 2227 } 2228 /* Now, the first wcc attribute reply. */ 2229 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == ND_NFSV4) { 2230 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2231 if (*(tl + 1)) 2232 nd->nd_flag |= ND_NOMOREDATA; 2233 } 2234 error = nfscl_wcc_data(nd, fdvp, fnap, fattrflagp, NULL, 2235 fstuff); 2236 /* and the second wcc attribute reply. */ 2237 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == ND_NFSV4 && 2238 !error) { 2239 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2240 if (*(tl + 1)) 2241 nd->nd_flag |= ND_NOMOREDATA; 2242 } 2243 if (!error) 2244 error = nfscl_wcc_data(nd, tdvp, tnap, tattrflagp, 2245 NULL, tstuff); 2246 } 2247 if (nd->nd_repstat && !error) 2248 error = nd->nd_repstat; 2249nfsmout: 2250 mbuf_freem(nd->nd_mrep); 2251 return (error); 2252} 2253 2254/* 2255 * nfs hard link create rpc 2256 */ 2257APPLESTATIC int 2258nfsrpc_link(vnode_t dvp, vnode_t vp, char *name, int namelen, 2259 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap, 2260 struct nfsvattr *nap, int *attrflagp, int *dattrflagp, void *dstuff) 2261{ 2262 u_int32_t *tl; 2263 struct nfsrv_descript nfsd, *nd = &nfsd; 2264 nfsattrbit_t attrbits; 2265 int error = 0; 2266 2267 *attrflagp = 0; 2268 *dattrflagp = 0; 2269 if (namelen > NFS_MAXNAMLEN) 2270 return (ENAMETOOLONG); 2271 NFSCL_REQSTART(nd, NFSPROC_LINK, vp); 2272 if (nd->nd_flag & ND_NFSV4) { 2273 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2274 *tl = txdr_unsigned(NFSV4OP_PUTFH); 2275 } 2276 (void) nfsm_fhtom(nd, VTONFS(dvp)->n_fhp->nfh_fh, 2277 VTONFS(dvp)->n_fhp->nfh_len, 0); 2278 if (nd->nd_flag & ND_NFSV4) { 2279 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2280 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2281 NFSWCCATTR_ATTRBIT(&attrbits); 2282 (void) nfsrv_putattrbit(nd, &attrbits); 2283 nd->nd_flag |= ND_V4WCCATTR; 2284 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2285 *tl = txdr_unsigned(NFSV4OP_LINK); 2286 } 2287 (void) nfsm_strtom(nd, name, namelen); 2288 error = nfscl_request(nd, vp, p, cred, dstuff); 2289 if (error) 2290 return (error); 2291 if (nd->nd_flag & ND_NFSV3) { 2292 error = nfscl_postop_attr(nd, nap, attrflagp, dstuff); 2293 if (!error) 2294 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, 2295 NULL, dstuff); 2296 } else if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == ND_NFSV4) { 2297 /* 2298 * First, parse out the PutFH and Getattr result. 2299 */ 2300 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2301 if (!(*(tl + 1))) 2302 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2303 if (*(tl + 1)) 2304 nd->nd_flag |= ND_NOMOREDATA; 2305 /* 2306 * Get the pre-op attributes. 2307 */ 2308 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 2309 } 2310 if (nd->nd_repstat && !error) 2311 error = nd->nd_repstat; 2312nfsmout: 2313 mbuf_freem(nd->nd_mrep); 2314 return (error); 2315} 2316 2317/* 2318 * nfs symbolic link create rpc 2319 */ 2320APPLESTATIC int 2321nfsrpc_symlink(vnode_t dvp, char *name, int namelen, char *target, 2322 struct vattr *vap, struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap, 2323 struct nfsvattr *nnap, struct nfsfh **nfhpp, int *attrflagp, 2324 int *dattrflagp, void *dstuff) 2325{ 2326 u_int32_t *tl; 2327 struct nfsrv_descript nfsd, *nd = &nfsd; 2328 struct nfsmount *nmp; 2329 int slen, error = 0; 2330 2331 *nfhpp = NULL; 2332 *attrflagp = 0; 2333 *dattrflagp = 0; 2334 nmp = VFSTONFS(vnode_mount(dvp)); 2335 slen = strlen(target); 2336 if (slen > NFS_MAXPATHLEN || namelen > NFS_MAXNAMLEN) 2337 return (ENAMETOOLONG); 2338 NFSCL_REQSTART(nd, NFSPROC_SYMLINK, dvp); 2339 if (nd->nd_flag & ND_NFSV4) { 2340 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2341 *tl = txdr_unsigned(NFLNK); 2342 (void) nfsm_strtom(nd, target, slen); 2343 } 2344 (void) nfsm_strtom(nd, name, namelen); 2345 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) 2346 nfscl_fillsattr(nd, vap, dvp, 0, 0); 2347 if (!(nd->nd_flag & ND_NFSV4)) 2348 (void) nfsm_strtom(nd, target, slen); 2349 if (nd->nd_flag & ND_NFSV2) 2350 nfscl_fillsattr(nd, vap, dvp, NFSSATTR_SIZENEG1, 0); 2351 error = nfscl_request(nd, dvp, p, cred, dstuff); 2352 if (error) 2353 return (error); 2354 if (nd->nd_flag & ND_NFSV4) 2355 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 2356 if ((nd->nd_flag & ND_NFSV3) && !error) { 2357 if (!nd->nd_repstat) 2358 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp); 2359 if (!error) 2360 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, 2361 NULL, dstuff); 2362 } 2363 if (nd->nd_repstat && !error) 2364 error = nd->nd_repstat; 2365 mbuf_freem(nd->nd_mrep); 2366 /* 2367 * Kludge: Map EEXIST => 0 assuming that it is a reply to a retry. 2368 */ 2369 if (error == EEXIST) 2370 error = 0; 2371 return (error); 2372} 2373 2374/* 2375 * nfs make dir rpc 2376 */ 2377APPLESTATIC int 2378nfsrpc_mkdir(vnode_t dvp, char *name, int namelen, struct vattr *vap, 2379 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap, 2380 struct nfsvattr *nnap, struct nfsfh **nfhpp, int *attrflagp, 2381 int *dattrflagp, void *dstuff) 2382{ 2383 u_int32_t *tl; 2384 struct nfsrv_descript nfsd, *nd = &nfsd; 2385 nfsattrbit_t attrbits; 2386 int error = 0; 2387 2388 *nfhpp = NULL; 2389 *attrflagp = 0; 2390 *dattrflagp = 0; 2391 if (namelen > NFS_MAXNAMLEN) 2392 return (ENAMETOOLONG); 2393 NFSCL_REQSTART(nd, NFSPROC_MKDIR, dvp); 2394 if (nd->nd_flag & ND_NFSV4) { 2395 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2396 *tl = txdr_unsigned(NFDIR); 2397 } 2398 (void) nfsm_strtom(nd, name, namelen); 2399 nfscl_fillsattr(nd, vap, dvp, NFSSATTR_SIZENEG1, 0); 2400 if (nd->nd_flag & ND_NFSV4) { 2401 NFSGETATTR_ATTRBIT(&attrbits); 2402 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2403 *tl++ = txdr_unsigned(NFSV4OP_GETFH); 2404 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2405 (void) nfsrv_putattrbit(nd, &attrbits); 2406 } 2407 error = nfscl_request(nd, dvp, p, cred, dstuff); 2408 if (error) 2409 return (error); 2410 if (nd->nd_flag & ND_NFSV4) 2411 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 2412 if (!nd->nd_repstat && !error) { 2413 if (nd->nd_flag & ND_NFSV4) { 2414 NFSM_DISSECT(tl, u_int32_t *, 5 * NFSX_UNSIGNED); 2415 error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL); 2416 } 2417 if (!error) 2418 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp); 2419 } 2420 if ((nd->nd_flag & ND_NFSV3) && !error) 2421 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 2422 if (nd->nd_repstat && !error) 2423 error = nd->nd_repstat; 2424nfsmout: 2425 mbuf_freem(nd->nd_mrep); 2426 /* 2427 * Kludge: Map EEXIST => 0 assuming that you have a reply to a retry. 2428 */ 2429 if (error == EEXIST) 2430 error = 0; 2431 return (error); 2432} 2433 2434/* 2435 * nfs remove directory call 2436 */ 2437APPLESTATIC int 2438nfsrpc_rmdir(vnode_t dvp, char *name, int namelen, struct ucred *cred, 2439 NFSPROC_T *p, struct nfsvattr *dnap, int *dattrflagp, void *dstuff) 2440{ 2441 struct nfsrv_descript nfsd, *nd = &nfsd; 2442 int error = 0; 2443 2444 *dattrflagp = 0; 2445 if (namelen > NFS_MAXNAMLEN) 2446 return (ENAMETOOLONG); 2447 NFSCL_REQSTART(nd, NFSPROC_RMDIR, dvp); 2448 (void) nfsm_strtom(nd, name, namelen); 2449 error = nfscl_request(nd, dvp, p, cred, dstuff); 2450 if (error) 2451 return (error); 2452 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) 2453 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 2454 if (nd->nd_repstat && !error) 2455 error = nd->nd_repstat; 2456 mbuf_freem(nd->nd_mrep); 2457 /* 2458 * Kludge: Map ENOENT => 0 assuming that you have a reply to a retry. 2459 */ 2460 if (error == ENOENT) 2461 error = 0; 2462 return (error); 2463} 2464 2465/* 2466 * Readdir rpc. 2467 * Always returns with either uio_resid unchanged, if you are at the 2468 * end of the directory, or uio_resid == 0, with all DIRBLKSIZ chunks 2469 * filled in. 2470 * I felt this would allow caching of directory blocks more easily 2471 * than returning a pertially filled block. 2472 * Directory offset cookies: 2473 * Oh my, what to do with them... 2474 * I can think of three ways to deal with them: 2475 * 1 - have the layer above these RPCs maintain a map between logical 2476 * directory byte offsets and the NFS directory offset cookies 2477 * 2 - pass the opaque directory offset cookies up into userland 2478 * and let the libc functions deal with them, via the system call 2479 * 3 - return them to userland in the "struct dirent", so future versions 2480 * of libc can use them and do whatever is necessary to amke things work 2481 * above these rpc calls, in the meantime 2482 * For now, I do #3 by "hiding" the directory offset cookies after the 2483 * d_name field in struct dirent. This is space inside d_reclen that 2484 * will be ignored by anything that doesn't know about them. 2485 * The directory offset cookies are filled in as the last 8 bytes of 2486 * each directory entry, after d_name. Someday, the userland libc 2487 * functions may be able to use these. In the meantime, it satisfies 2488 * OpenBSD's requirements for cookies being returned. 2489 * If expects the directory offset cookie for the read to be in uio_offset 2490 * and returns the one for the next entry after this directory block in 2491 * there, as well. 2492 */ 2493APPLESTATIC int 2494nfsrpc_readdir(vnode_t vp, struct uio *uiop, nfsuint64 *cookiep, 2495 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, 2496 int *eofp, void *stuff) 2497{ 2498 int len, left; 2499 struct dirent *dp = NULL; 2500 u_int32_t *tl; 2501 nfsquad_t cookie, ncookie; 2502 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 2503 struct nfsnode *dnp = VTONFS(vp); 2504 struct nfsvattr nfsva; 2505 struct nfsrv_descript nfsd, *nd = &nfsd; 2506 int error = 0, tlen, more_dirs = 1, blksiz = 0, bigenough = 1; 2507 int reqsize, tryformoredirs = 1, readsize, eof = 0, gotmnton = 0; 2508 long dotfileid, dotdotfileid = 0; 2509 u_int32_t fakefileno = 0xffffffff, rderr; 2510 char *cp; 2511 nfsattrbit_t attrbits, dattrbits; 2512 u_int32_t *tl2 = NULL; 2513 size_t tresid; 2514 2515 KASSERT(uiop->uio_iovcnt == 1 && 2516 (uio_uio_resid(uiop) & (DIRBLKSIZ - 1)) == 0, 2517 ("nfs readdirrpc bad uio")); 2518 2519 /* 2520 * There is no point in reading a lot more than uio_resid, however 2521 * adding one additional DIRBLKSIZ makes sense. Since uio_resid 2522 * and nm_readdirsize are both exact multiples of DIRBLKSIZ, this 2523 * will never make readsize > nm_readdirsize. 2524 */ 2525 readsize = nmp->nm_readdirsize; 2526 if (readsize > uio_uio_resid(uiop)) 2527 readsize = uio_uio_resid(uiop) + DIRBLKSIZ; 2528 2529 *attrflagp = 0; 2530 if (eofp) 2531 *eofp = 0; 2532 tresid = uio_uio_resid(uiop); 2533 cookie.lval[0] = cookiep->nfsuquad[0]; 2534 cookie.lval[1] = cookiep->nfsuquad[1]; 2535 nd->nd_mrep = NULL; 2536 2537 /* 2538 * For NFSv4, first create the "." and ".." entries. 2539 */ 2540 if (NFSHASNFSV4(nmp)) { 2541 reqsize = 6 * NFSX_UNSIGNED; 2542 NFSGETATTR_ATTRBIT(&dattrbits); 2543 NFSZERO_ATTRBIT(&attrbits); 2544 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_FILEID); 2545 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_TYPE); 2546 if (NFSISSET_ATTRBIT(&dnp->n_vattr.na_suppattr, 2547 NFSATTRBIT_MOUNTEDONFILEID)) { 2548 NFSSETBIT_ATTRBIT(&attrbits, 2549 NFSATTRBIT_MOUNTEDONFILEID); 2550 gotmnton = 1; 2551 } else { 2552 /* 2553 * Must fake it. Use the fileno, except when the 2554 * fsid is != to that of the directory. For that 2555 * case, generate a fake fileno that is not the same. 2556 */ 2557 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_FSID); 2558 gotmnton = 0; 2559 } 2560 2561 /* 2562 * Joy, oh joy. For V4 we get to hand craft '.' and '..'. 2563 */ 2564 if (uiop->uio_offset == 0) { 2565#if defined(__FreeBSD_version) && __FreeBSD_version >= 800000 2566 error = VOP_GETATTR(vp, &nfsva.na_vattr, cred); 2567#else 2568 error = VOP_GETATTR(vp, &nfsva.na_vattr, cred, p); 2569#endif 2570 if (error) 2571 return (error); 2572 dotfileid = nfsva.na_fileid; 2573 NFSCL_REQSTART(nd, NFSPROC_LOOKUPP, vp); 2574 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2575 *tl++ = txdr_unsigned(NFSV4OP_GETFH); 2576 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2577 (void) nfsrv_putattrbit(nd, &attrbits); 2578 error = nfscl_request(nd, vp, p, cred, stuff); 2579 if (error) 2580 return (error); 2581 if (nd->nd_repstat == 0) { 2582 NFSM_DISSECT(tl, u_int32_t *, 3*NFSX_UNSIGNED); 2583 len = fxdr_unsigned(int, *(tl + 2)); 2584 if (len > 0 && len <= NFSX_V4FHMAX) 2585 error = nfsm_advance(nd, NFSM_RNDUP(len), -1); 2586 else 2587 error = EPERM; 2588 if (!error) { 2589 NFSM_DISSECT(tl, u_int32_t *, 2*NFSX_UNSIGNED); 2590 nfsva.na_mntonfileno = 0xffffffff; 2591 error = nfsv4_loadattr(nd, NULL, &nfsva, NULL, 2592 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0, 2593 NULL, NULL, NULL, p, cred); 2594 if (error) { 2595 dotdotfileid = dotfileid; 2596 } else if (gotmnton) { 2597 if (nfsva.na_mntonfileno != 0xffffffff) 2598 dotdotfileid = nfsva.na_mntonfileno; 2599 else 2600 dotdotfileid = nfsva.na_fileid; 2601 } else if (nfsva.na_filesid[0] == 2602 dnp->n_vattr.na_filesid[0] && 2603 nfsva.na_filesid[1] == 2604 dnp->n_vattr.na_filesid[1]) { 2605 dotdotfileid = nfsva.na_fileid; 2606 } else { 2607 do { 2608 fakefileno--; 2609 } while (fakefileno == 2610 nfsva.na_fileid); 2611 dotdotfileid = fakefileno; 2612 } 2613 } 2614 } else if (nd->nd_repstat == NFSERR_NOENT) { 2615 /* 2616 * Lookupp returns NFSERR_NOENT when we are 2617 * at the root, so just use the current dir. 2618 */ 2619 nd->nd_repstat = 0; 2620 dotdotfileid = dotfileid; 2621 } else { 2622 error = nd->nd_repstat; 2623 } 2624 mbuf_freem(nd->nd_mrep); 2625 if (error) 2626 return (error); 2627 nd->nd_mrep = NULL; 2628 dp = (struct dirent *) CAST_DOWN(caddr_t, uio_iov_base(uiop)); 2629 dp->d_type = DT_DIR; 2630 dp->d_fileno = dotfileid; 2631 dp->d_namlen = 1; 2632 dp->d_name[0] = '.'; 2633 dp->d_name[1] = '\0'; 2634 dp->d_reclen = DIRENT_SIZE(dp) + NFSX_HYPER; 2635 /* 2636 * Just make these offset cookie 0. 2637 */ 2638 tl = (u_int32_t *)&dp->d_name[4]; 2639 *tl++ = 0; 2640 *tl = 0; 2641 blksiz += dp->d_reclen; 2642 uio_uio_resid_add(uiop, -(dp->d_reclen)); 2643 uiop->uio_offset += dp->d_reclen; 2644 uio_iov_base_add(uiop, dp->d_reclen); 2645 uio_iov_len_add(uiop, -(dp->d_reclen)); 2646 dp = (struct dirent *) CAST_DOWN(caddr_t, uio_iov_base(uiop)); 2647 dp->d_type = DT_DIR; 2648 dp->d_fileno = dotdotfileid; 2649 dp->d_namlen = 2; 2650 dp->d_name[0] = '.'; 2651 dp->d_name[1] = '.'; 2652 dp->d_name[2] = '\0'; 2653 dp->d_reclen = DIRENT_SIZE(dp) + NFSX_HYPER; 2654 /* 2655 * Just make these offset cookie 0. 2656 */ 2657 tl = (u_int32_t *)&dp->d_name[4]; 2658 *tl++ = 0; 2659 *tl = 0; 2660 blksiz += dp->d_reclen; 2661 uio_uio_resid_add(uiop, -(dp->d_reclen)); 2662 uiop->uio_offset += dp->d_reclen; 2663 uio_iov_base_add(uiop, dp->d_reclen); 2664 uio_iov_len_add(uiop, -(dp->d_reclen)); 2665 } 2666 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_RDATTRERROR); 2667 } else { 2668 reqsize = 5 * NFSX_UNSIGNED; 2669 } 2670 2671 2672 /* 2673 * Loop around doing readdir rpc's of size readsize. 2674 * The stopping criteria is EOF or buffer full. 2675 */ 2676 while (more_dirs && bigenough) { 2677 *attrflagp = 0; 2678 NFSCL_REQSTART(nd, NFSPROC_READDIR, vp); 2679 if (nd->nd_flag & ND_NFSV2) { 2680 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2681 *tl++ = cookie.lval[1]; 2682 *tl = txdr_unsigned(readsize); 2683 } else { 2684 NFSM_BUILD(tl, u_int32_t *, reqsize); 2685 *tl++ = cookie.lval[0]; 2686 *tl++ = cookie.lval[1]; 2687 if (cookie.qval == 0) { 2688 *tl++ = 0; 2689 *tl++ = 0; 2690 } else { 2691 NFSLOCKNODE(dnp); 2692 *tl++ = dnp->n_cookieverf.nfsuquad[0]; 2693 *tl++ = dnp->n_cookieverf.nfsuquad[1]; 2694 NFSUNLOCKNODE(dnp); 2695 } 2696 if (nd->nd_flag & ND_NFSV4) { 2697 *tl++ = txdr_unsigned(readsize); 2698 *tl = txdr_unsigned(readsize); 2699 (void) nfsrv_putattrbit(nd, &attrbits); 2700 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2701 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2702 (void) nfsrv_putattrbit(nd, &dattrbits); 2703 } else { 2704 *tl = txdr_unsigned(readsize); 2705 } 2706 } 2707 error = nfscl_request(nd, vp, p, cred, stuff); 2708 if (error) 2709 return (error); 2710 if (!(nd->nd_flag & ND_NFSV2)) { 2711 if (nd->nd_flag & ND_NFSV3) 2712 error = nfscl_postop_attr(nd, nap, attrflagp, 2713 stuff); 2714 if (!nd->nd_repstat && !error) { 2715 NFSM_DISSECT(tl, u_int32_t *, NFSX_HYPER); 2716 NFSLOCKNODE(dnp); 2717 dnp->n_cookieverf.nfsuquad[0] = *tl++; 2718 dnp->n_cookieverf.nfsuquad[1] = *tl; 2719 NFSUNLOCKNODE(dnp); 2720 } 2721 } 2722 if (nd->nd_repstat || error) { 2723 if (!error) 2724 error = nd->nd_repstat; 2725 goto nfsmout; 2726 } 2727 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2728 more_dirs = fxdr_unsigned(int, *tl); 2729 if (!more_dirs) 2730 tryformoredirs = 0; 2731 2732 /* loop thru the dir entries, doctoring them to 4bsd form */ 2733 while (more_dirs && bigenough) { 2734 if (nd->nd_flag & ND_NFSV4) { 2735 NFSM_DISSECT(tl, u_int32_t *, 3*NFSX_UNSIGNED); 2736 ncookie.lval[0] = *tl++; 2737 ncookie.lval[1] = *tl++; 2738 len = fxdr_unsigned(int, *tl); 2739 } else if (nd->nd_flag & ND_NFSV3) { 2740 NFSM_DISSECT(tl, u_int32_t *, 3*NFSX_UNSIGNED); 2741 nfsva.na_fileid = fxdr_hyper(tl); 2742 tl += 2; 2743 len = fxdr_unsigned(int, *tl); 2744 } else { 2745 NFSM_DISSECT(tl, u_int32_t *, 2*NFSX_UNSIGNED); 2746 nfsva.na_fileid = 2747 fxdr_unsigned(long, *tl++); 2748 len = fxdr_unsigned(int, *tl); 2749 } 2750 if (len <= 0 || len > NFS_MAXNAMLEN) { 2751 error = EBADRPC; 2752 goto nfsmout; 2753 } 2754 tlen = NFSM_RNDUP(len); 2755 if (tlen == len) 2756 tlen += 4; /* To ensure null termination */ 2757 left = DIRBLKSIZ - blksiz; 2758 if ((int)(tlen + DIRHDSIZ + NFSX_HYPER) > left) { 2759 dp->d_reclen += left; 2760 uio_iov_base_add(uiop, left); 2761 uio_iov_len_add(uiop, -(left)); 2762 uio_uio_resid_add(uiop, -(left)); 2763 uiop->uio_offset += left; 2764 blksiz = 0; 2765 } 2766 if ((int)(tlen + DIRHDSIZ + NFSX_HYPER) > uio_uio_resid(uiop)) 2767 bigenough = 0; 2768 if (bigenough) { 2769 dp = (struct dirent *) CAST_DOWN(caddr_t, uio_iov_base(uiop)); 2770 dp->d_namlen = len; 2771 dp->d_reclen = tlen + DIRHDSIZ + NFSX_HYPER; 2772 dp->d_type = DT_UNKNOWN; 2773 blksiz += dp->d_reclen; 2774 if (blksiz == DIRBLKSIZ) 2775 blksiz = 0; 2776 uio_uio_resid_add(uiop, -(DIRHDSIZ)); 2777 uiop->uio_offset += DIRHDSIZ; 2778 uio_iov_base_add(uiop, DIRHDSIZ); 2779 uio_iov_len_add(uiop, -(DIRHDSIZ)); 2780 error = nfsm_mbufuio(nd, uiop, len); 2781 if (error) 2782 goto nfsmout; 2783 cp = CAST_DOWN(caddr_t, uio_iov_base(uiop)); 2784 tlen -= len; 2785 *cp = '\0'; /* null terminate */ 2786 cp += tlen; /* points to cookie storage */ 2787 tl2 = (u_int32_t *)cp; 2788 uio_iov_base_add(uiop, (tlen + NFSX_HYPER)); 2789 uio_iov_len_add(uiop, -(tlen + NFSX_HYPER)); 2790 uio_uio_resid_add(uiop, -(tlen + NFSX_HYPER)); 2791 uiop->uio_offset += (tlen + NFSX_HYPER); 2792 } else { 2793 error = nfsm_advance(nd, NFSM_RNDUP(len), -1); 2794 if (error) 2795 goto nfsmout; 2796 } 2797 if (nd->nd_flag & ND_NFSV4) { 2798 rderr = 0; 2799 nfsva.na_mntonfileno = 0xffffffff; 2800 error = nfsv4_loadattr(nd, NULL, &nfsva, NULL, 2801 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0, 2802 NULL, NULL, &rderr, p, cred); 2803 if (error) 2804 goto nfsmout; 2805 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2806 } else if (nd->nd_flag & ND_NFSV3) { 2807 NFSM_DISSECT(tl, u_int32_t *, 3*NFSX_UNSIGNED); 2808 ncookie.lval[0] = *tl++; 2809 ncookie.lval[1] = *tl++; 2810 } else { 2811 NFSM_DISSECT(tl, u_int32_t *, 2*NFSX_UNSIGNED); 2812 ncookie.lval[0] = 0; 2813 ncookie.lval[1] = *tl++; 2814 } 2815 if (bigenough) { 2816 if (nd->nd_flag & ND_NFSV4) { 2817 if (rderr) { 2818 dp->d_fileno = 0; 2819 } else { 2820 if (gotmnton) { 2821 if (nfsva.na_mntonfileno != 0xffffffff) 2822 dp->d_fileno = nfsva.na_mntonfileno; 2823 else 2824 dp->d_fileno = nfsva.na_fileid; 2825 } else if (nfsva.na_filesid[0] == 2826 dnp->n_vattr.na_filesid[0] && 2827 nfsva.na_filesid[1] == 2828 dnp->n_vattr.na_filesid[1]) { 2829 dp->d_fileno = nfsva.na_fileid; 2830 } else { 2831 do { 2832 fakefileno--; 2833 } while (fakefileno == 2834 nfsva.na_fileid); 2835 dp->d_fileno = fakefileno; 2836 } 2837 dp->d_type = vtonfs_dtype(nfsva.na_type); 2838 } 2839 } else { 2840 dp->d_fileno = nfsva.na_fileid; 2841 } 2842 *tl2++ = cookiep->nfsuquad[0] = cookie.lval[0] = 2843 ncookie.lval[0]; 2844 *tl2 = cookiep->nfsuquad[1] = cookie.lval[1] = 2845 ncookie.lval[1]; 2846 } 2847 more_dirs = fxdr_unsigned(int, *tl); 2848 } 2849 /* 2850 * If at end of rpc data, get the eof boolean 2851 */ 2852 if (!more_dirs) { 2853 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2854 eof = fxdr_unsigned(int, *tl); 2855 if (tryformoredirs) 2856 more_dirs = !eof; 2857 if (nd->nd_flag & ND_NFSV4) { 2858 error = nfscl_postop_attr(nd, nap, attrflagp, 2859 stuff); 2860 if (error) 2861 goto nfsmout; 2862 } 2863 } 2864 mbuf_freem(nd->nd_mrep); 2865 nd->nd_mrep = NULL; 2866 } 2867 /* 2868 * Fill last record, iff any, out to a multiple of DIRBLKSIZ 2869 * by increasing d_reclen for the last record. 2870 */ 2871 if (blksiz > 0) { 2872 left = DIRBLKSIZ - blksiz; 2873 dp->d_reclen += left; 2874 uio_iov_base_add(uiop, left); 2875 uio_iov_len_add(uiop, -(left)); 2876 uio_uio_resid_add(uiop, -(left)); 2877 uiop->uio_offset += left; 2878 } 2879 2880 /* 2881 * If returning no data, assume end of file. 2882 * If not bigenough, return not end of file, since you aren't 2883 * returning all the data 2884 * Otherwise, return the eof flag from the server. 2885 */ 2886 if (eofp) { 2887 if (tresid == ((size_t)(uio_uio_resid(uiop)))) 2888 *eofp = 1; 2889 else if (!bigenough) 2890 *eofp = 0; 2891 else 2892 *eofp = eof; 2893 } 2894 2895 /* 2896 * Add extra empty records to any remaining DIRBLKSIZ chunks. 2897 */ 2898 while (uio_uio_resid(uiop) > 0 && ((size_t)(uio_uio_resid(uiop))) != tresid) { 2899 dp = (struct dirent *) CAST_DOWN(caddr_t, uio_iov_base(uiop)); 2900 dp->d_type = DT_UNKNOWN; 2901 dp->d_fileno = 0; 2902 dp->d_namlen = 0; 2903 dp->d_name[0] = '\0'; 2904 tl = (u_int32_t *)&dp->d_name[4]; 2905 *tl++ = cookie.lval[0]; 2906 *tl = cookie.lval[1]; 2907 dp->d_reclen = DIRBLKSIZ; 2908 uio_iov_base_add(uiop, DIRBLKSIZ); 2909 uio_iov_len_add(uiop, -(DIRBLKSIZ)); 2910 uio_uio_resid_add(uiop, -(DIRBLKSIZ)); 2911 uiop->uio_offset += DIRBLKSIZ; 2912 } 2913 2914nfsmout: 2915 if (nd->nd_mrep != NULL) 2916 mbuf_freem(nd->nd_mrep); 2917 return (error); 2918} 2919 2920#ifndef APPLE 2921/* 2922 * NFS V3 readdir plus RPC. Used in place of nfsrpc_readdir(). 2923 * (Also used for NFS V4 when mount flag set.) 2924 * (ditto above w.r.t. multiple of DIRBLKSIZ, etc.) 2925 */ 2926APPLESTATIC int 2927nfsrpc_readdirplus(vnode_t vp, struct uio *uiop, nfsuint64 *cookiep, 2928 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, 2929 int *eofp, void *stuff) 2930{ 2931 int len, left; 2932 struct dirent *dp = NULL; 2933 u_int32_t *tl; 2934 vnode_t newvp = NULLVP; 2935 struct nfsrv_descript nfsd, *nd = &nfsd; 2936 struct nameidata nami, *ndp = &nami; 2937 struct componentname *cnp = &ndp->ni_cnd; 2938 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 2939 struct nfsnode *dnp = VTONFS(vp), *np; 2940 struct nfsvattr nfsva; 2941 struct nfsfh *nfhp; 2942 nfsquad_t cookie, ncookie; 2943 int error = 0, tlen, more_dirs = 1, blksiz = 0, bigenough = 1; 2944 int attrflag, tryformoredirs = 1, eof = 0, gotmnton = 0; 2945 int isdotdot = 0, unlocknewvp = 0; 2946 long dotfileid, dotdotfileid = 0, fileno = 0; 2947 char *cp; 2948 nfsattrbit_t attrbits, dattrbits; 2949 size_t tresid; 2950 u_int32_t *tl2 = NULL, fakefileno = 0xffffffff, rderr; 2951 2952 KASSERT(uiop->uio_iovcnt == 1 && 2953 (uio_uio_resid(uiop) & (DIRBLKSIZ - 1)) == 0, 2954 ("nfs readdirplusrpc bad uio")); 2955 *attrflagp = 0; 2956 if (eofp != NULL) 2957 *eofp = 0; 2958 ndp->ni_dvp = vp; 2959 nd->nd_mrep = NULL; 2960 cookie.lval[0] = cookiep->nfsuquad[0]; 2961 cookie.lval[1] = cookiep->nfsuquad[1]; 2962 tresid = uio_uio_resid(uiop); 2963 2964 /* 2965 * For NFSv4, first create the "." and ".." entries. 2966 */ 2967 if (NFSHASNFSV4(nmp)) { 2968 NFSGETATTR_ATTRBIT(&dattrbits); 2969 NFSZERO_ATTRBIT(&attrbits); 2970 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_FILEID); 2971 if (NFSISSET_ATTRBIT(&dnp->n_vattr.na_suppattr, 2972 NFSATTRBIT_MOUNTEDONFILEID)) { 2973 NFSSETBIT_ATTRBIT(&attrbits, 2974 NFSATTRBIT_MOUNTEDONFILEID); 2975 gotmnton = 1; 2976 } else { 2977 /* 2978 * Must fake it. Use the fileno, except when the 2979 * fsid is != to that of the directory. For that 2980 * case, generate a fake fileno that is not the same. 2981 */ 2982 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_FSID); 2983 gotmnton = 0; 2984 } 2985 2986 /* 2987 * Joy, oh joy. For V4 we get to hand craft '.' and '..'. 2988 */ 2989 if (uiop->uio_offset == 0) { 2990#if defined(__FreeBSD_version) && __FreeBSD_version >= 800000 2991 error = VOP_GETATTR(vp, &nfsva.na_vattr, cred); 2992#else 2993 error = VOP_GETATTR(vp, &nfsva.na_vattr, cred, p); 2994#endif 2995 if (error) 2996 return (error); 2997 dotfileid = nfsva.na_fileid; 2998 NFSCL_REQSTART(nd, NFSPROC_LOOKUPP, vp); 2999 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 3000 *tl++ = txdr_unsigned(NFSV4OP_GETFH); 3001 *tl = txdr_unsigned(NFSV4OP_GETATTR); 3002 (void) nfsrv_putattrbit(nd, &attrbits); 3003 error = nfscl_request(nd, vp, p, cred, stuff); 3004 if (error) 3005 return (error); 3006 if (nd->nd_repstat == 0) { 3007 NFSM_DISSECT(tl, u_int32_t *, 3*NFSX_UNSIGNED); 3008 len = fxdr_unsigned(int, *(tl + 2)); 3009 if (len > 0 && len <= NFSX_V4FHMAX) 3010 error = nfsm_advance(nd, NFSM_RNDUP(len), -1); 3011 else 3012 error = EPERM; 3013 if (!error) { 3014 NFSM_DISSECT(tl, u_int32_t *, 2*NFSX_UNSIGNED); 3015 nfsva.na_mntonfileno = 0xffffffff; 3016 error = nfsv4_loadattr(nd, NULL, &nfsva, NULL, 3017 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0, 3018 NULL, NULL, NULL, p, cred); 3019 if (error) { 3020 dotdotfileid = dotfileid; 3021 } else if (gotmnton) { 3022 if (nfsva.na_mntonfileno != 0xffffffff) 3023 dotdotfileid = nfsva.na_mntonfileno; 3024 else 3025 dotdotfileid = nfsva.na_fileid; 3026 } else if (nfsva.na_filesid[0] == 3027 dnp->n_vattr.na_filesid[0] && 3028 nfsva.na_filesid[1] == 3029 dnp->n_vattr.na_filesid[1]) { 3030 dotdotfileid = nfsva.na_fileid; 3031 } else { 3032 do { 3033 fakefileno--; 3034 } while (fakefileno == 3035 nfsva.na_fileid); 3036 dotdotfileid = fakefileno; 3037 } 3038 } 3039 } else if (nd->nd_repstat == NFSERR_NOENT) { 3040 /* 3041 * Lookupp returns NFSERR_NOENT when we are 3042 * at the root, so just use the current dir. 3043 */ 3044 nd->nd_repstat = 0; 3045 dotdotfileid = dotfileid; 3046 } else { 3047 error = nd->nd_repstat; 3048 } 3049 mbuf_freem(nd->nd_mrep); 3050 if (error) 3051 return (error); 3052 nd->nd_mrep = NULL; 3053 dp = (struct dirent *)uio_iov_base(uiop); 3054 dp->d_type = DT_DIR; 3055 dp->d_fileno = dotfileid; 3056 dp->d_namlen = 1; 3057 dp->d_name[0] = '.'; 3058 dp->d_name[1] = '\0'; 3059 dp->d_reclen = DIRENT_SIZE(dp) + NFSX_HYPER; 3060 /* 3061 * Just make these offset cookie 0. 3062 */ 3063 tl = (u_int32_t *)&dp->d_name[4]; 3064 *tl++ = 0; 3065 *tl = 0; 3066 blksiz += dp->d_reclen; 3067 uio_uio_resid_add(uiop, -(dp->d_reclen)); 3068 uiop->uio_offset += dp->d_reclen; 3069 uio_iov_base_add(uiop, dp->d_reclen); 3070 uio_iov_len_add(uiop, -(dp->d_reclen)); 3071 dp = (struct dirent *)uio_iov_base(uiop); 3072 dp->d_type = DT_DIR; 3073 dp->d_fileno = dotdotfileid; 3074 dp->d_namlen = 2; 3075 dp->d_name[0] = '.'; 3076 dp->d_name[1] = '.'; 3077 dp->d_name[2] = '\0'; 3078 dp->d_reclen = DIRENT_SIZE(dp) + NFSX_HYPER; 3079 /* 3080 * Just make these offset cookie 0. 3081 */ 3082 tl = (u_int32_t *)&dp->d_name[4]; 3083 *tl++ = 0; 3084 *tl = 0; 3085 blksiz += dp->d_reclen; 3086 uio_uio_resid_add(uiop, -(dp->d_reclen)); 3087 uiop->uio_offset += dp->d_reclen; 3088 uio_iov_base_add(uiop, dp->d_reclen); 3089 uio_iov_len_add(uiop, -(dp->d_reclen)); 3090 } 3091 NFSREADDIRPLUS_ATTRBIT(&attrbits); 3092 if (gotmnton) 3093 NFSSETBIT_ATTRBIT(&attrbits, 3094 NFSATTRBIT_MOUNTEDONFILEID); 3095 } 3096 3097 /* 3098 * Loop around doing readdir rpc's of size nm_readdirsize. 3099 * The stopping criteria is EOF or buffer full. 3100 */ 3101 while (more_dirs && bigenough) { 3102 *attrflagp = 0; 3103 NFSCL_REQSTART(nd, NFSPROC_READDIRPLUS, vp); 3104 NFSM_BUILD(tl, u_int32_t *, 6 * NFSX_UNSIGNED); 3105 *tl++ = cookie.lval[0]; 3106 *tl++ = cookie.lval[1]; 3107 if (cookie.qval == 0) { 3108 *tl++ = 0; 3109 *tl++ = 0; 3110 } else { 3111 NFSLOCKNODE(dnp); 3112 *tl++ = dnp->n_cookieverf.nfsuquad[0]; 3113 *tl++ = dnp->n_cookieverf.nfsuquad[1]; 3114 NFSUNLOCKNODE(dnp); 3115 } 3116 *tl++ = txdr_unsigned(nmp->nm_readdirsize); 3117 *tl = txdr_unsigned(nmp->nm_readdirsize); 3118 if (nd->nd_flag & ND_NFSV4) { 3119 (void) nfsrv_putattrbit(nd, &attrbits); 3120 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 3121 *tl = txdr_unsigned(NFSV4OP_GETATTR); 3122 (void) nfsrv_putattrbit(nd, &dattrbits); 3123 } 3124 error = nfscl_request(nd, vp, p, cred, stuff); 3125 if (error) 3126 return (error); 3127 if (nd->nd_flag & ND_NFSV3) 3128 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 3129 if (nd->nd_repstat || error) { 3130 if (!error) 3131 error = nd->nd_repstat; 3132 goto nfsmout; 3133 } 3134 NFSM_DISSECT(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 3135 NFSLOCKNODE(dnp); 3136 dnp->n_cookieverf.nfsuquad[0] = *tl++; 3137 dnp->n_cookieverf.nfsuquad[1] = *tl++; 3138 NFSUNLOCKNODE(dnp); 3139 more_dirs = fxdr_unsigned(int, *tl); 3140 if (!more_dirs) 3141 tryformoredirs = 0; 3142 3143 /* loop thru the dir entries, doctoring them to 4bsd form */ 3144 while (more_dirs && bigenough) { 3145 NFSM_DISSECT(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 3146 if (nd->nd_flag & ND_NFSV4) { 3147 ncookie.lval[0] = *tl++; 3148 ncookie.lval[1] = *tl++; 3149 } else { 3150 fileno = fxdr_unsigned(long, *++tl); 3151 tl++; 3152 } 3153 len = fxdr_unsigned(int, *tl); 3154 if (len <= 0 || len > NFS_MAXNAMLEN) { 3155 error = EBADRPC; 3156 goto nfsmout; 3157 } 3158 tlen = NFSM_RNDUP(len); 3159 if (tlen == len) 3160 tlen += 4; /* To ensure null termination */ 3161 left = DIRBLKSIZ - blksiz; 3162 if ((tlen + DIRHDSIZ + NFSX_HYPER) > left) { 3163 dp->d_reclen += left; 3164 uio_iov_base_add(uiop, left); 3165 uio_iov_len_add(uiop, -(left)); 3166 uio_uio_resid_add(uiop, -(left)); 3167 uiop->uio_offset += left; 3168 blksiz = 0; 3169 } 3170 if ((tlen + DIRHDSIZ + NFSX_HYPER) > uio_uio_resid(uiop)) 3171 bigenough = 0; 3172 if (bigenough) { 3173 dp = (struct dirent *)uio_iov_base(uiop); 3174 dp->d_namlen = len; 3175 dp->d_reclen = tlen + DIRHDSIZ + NFSX_HYPER; 3176 dp->d_type = DT_UNKNOWN; 3177 blksiz += dp->d_reclen; 3178 if (blksiz == DIRBLKSIZ) 3179 blksiz = 0; 3180 uio_uio_resid_add(uiop, -(DIRHDSIZ)); 3181 uiop->uio_offset += DIRHDSIZ; 3182 uio_iov_base_add(uiop, DIRHDSIZ); 3183 uio_iov_len_add(uiop, -(DIRHDSIZ)); 3184 cnp->cn_nameptr = uio_iov_base(uiop); 3185 cnp->cn_namelen = len; 3186 NFSCNHASHZERO(cnp); 3187 error = nfsm_mbufuio(nd, uiop, len); 3188 if (error) 3189 goto nfsmout; 3190 cp = uio_iov_base(uiop); 3191 tlen -= len; 3192 *cp = '\0'; 3193 cp += tlen; /* points to cookie storage */ 3194 tl2 = (u_int32_t *)cp; 3195 if (len == 2 && cnp->cn_nameptr[0] == '.' && 3196 cnp->cn_nameptr[1] == '.') 3197 isdotdot = 1; 3198 else 3199 isdotdot = 0; 3200 uio_iov_base_add(uiop, (tlen + NFSX_HYPER)); 3201 uio_iov_len_add(uiop, -(tlen + NFSX_HYPER)); 3202 uio_uio_resid_add(uiop, -(tlen + NFSX_HYPER)); 3203 uiop->uio_offset += (tlen + NFSX_HYPER); 3204 } else { 3205 error = nfsm_advance(nd, NFSM_RNDUP(len), -1); 3206 if (error) 3207 goto nfsmout; 3208 } 3209 nfhp = NULL; 3210 if (nd->nd_flag & ND_NFSV3) { 3211 NFSM_DISSECT(tl, u_int32_t *, 3*NFSX_UNSIGNED); 3212 ncookie.lval[0] = *tl++; 3213 ncookie.lval[1] = *tl++; 3214 attrflag = fxdr_unsigned(int, *tl); 3215 if (attrflag) { 3216 error = nfsm_loadattr(nd, &nfsva); 3217 if (error) 3218 goto nfsmout; 3219 } 3220 NFSM_DISSECT(tl,u_int32_t *,NFSX_UNSIGNED); 3221 if (*tl) { 3222 error = nfsm_getfh(nd, &nfhp); 3223 if (error) 3224 goto nfsmout; 3225 } 3226 if (!attrflag && nfhp != NULL) { 3227 FREE((caddr_t)nfhp, M_NFSFH); 3228 nfhp = NULL; 3229 } 3230 } else { 3231 rderr = 0; 3232 nfsva.na_mntonfileno = 0xffffffff; 3233 error = nfsv4_loadattr(nd, NULL, &nfsva, &nfhp, 3234 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0, 3235 NULL, NULL, &rderr, p, cred); 3236 if (error) 3237 goto nfsmout; 3238 } 3239 3240 if (bigenough) { 3241 if (nd->nd_flag & ND_NFSV4) { 3242 if (rderr) { 3243 dp->d_fileno = 0; 3244 } else if (gotmnton) { 3245 if (nfsva.na_mntonfileno != 0xffffffff) 3246 dp->d_fileno = nfsva.na_mntonfileno; 3247 else 3248 dp->d_fileno = nfsva.na_fileid; 3249 } else if (nfsva.na_filesid[0] == 3250 dnp->n_vattr.na_filesid[0] && 3251 nfsva.na_filesid[1] == 3252 dnp->n_vattr.na_filesid[1]) { 3253 dp->d_fileno = nfsva.na_fileid; 3254 } else { 3255 do { 3256 fakefileno--; 3257 } while (fakefileno == 3258 nfsva.na_fileid); 3259 dp->d_fileno = fakefileno; 3260 } 3261 } else { 3262 dp->d_fileno = fileno; 3263 } 3264 *tl2++ = cookiep->nfsuquad[0] = cookie.lval[0] = 3265 ncookie.lval[0]; 3266 *tl2 = cookiep->nfsuquad[1] = cookie.lval[1] = 3267 ncookie.lval[1]; 3268 3269 if (nfhp != NULL) { 3270 if (NFSRV_CMPFH(nfhp->nfh_fh, nfhp->nfh_len, 3271 dnp->n_fhp->nfh_fh, dnp->n_fhp->nfh_len)) { 3272 VREF(vp); 3273 newvp = vp; 3274 unlocknewvp = 0; 3275 FREE((caddr_t)nfhp, M_NFSFH); 3276 np = dnp; 3277 } else if (isdotdot != 0) { 3278 /* 3279 * Skip doing a nfscl_nget() call for "..". 3280 * There's a race between acquiring the nfs 3281 * node here and lookups that look for the 3282 * directory being read (in the parent). 3283 * It would try to get a lock on ".." here, 3284 * owning the lock on the directory being 3285 * read. Lookup will hold the lock on ".." 3286 * and try to acquire the lock on the 3287 * directory being read. 3288 * If the directory is unlocked/relocked, 3289 * then there is a LOR with the buflock 3290 * vp is relocked. 3291 */ 3292 free(nfhp, M_NFSFH); 3293 } else { 3294 error = nfscl_nget(vnode_mount(vp), vp, 3295 nfhp, cnp, p, &np, NULL, LK_EXCLUSIVE); 3296 if (!error) { 3297 newvp = NFSTOV(np); 3298 unlocknewvp = 1; 3299 } 3300 } 3301 nfhp = NULL; 3302 if (newvp != NULLVP) { 3303 error = nfscl_loadattrcache(&newvp, 3304 &nfsva, NULL, NULL, 0, 0); 3305 if (error) { 3306 if (unlocknewvp) 3307 vput(newvp); 3308 else 3309 vrele(newvp); 3310 goto nfsmout; 3311 } 3312 dp->d_type = 3313 vtonfs_dtype(np->n_vattr.na_type); 3314 ndp->ni_vp = newvp; 3315 NFSCNHASH(cnp, HASHINIT); 3316 if (cnp->cn_namelen <= NCHNAMLEN) { 3317 np->n_ctime = np->n_vattr.na_ctime; 3318 cache_enter(ndp->ni_dvp,ndp->ni_vp,cnp); 3319 } 3320 if (unlocknewvp) 3321 vput(newvp); 3322 else 3323 vrele(newvp); 3324 newvp = NULLVP; 3325 } 3326 } 3327 } else if (nfhp != NULL) { 3328 FREE((caddr_t)nfhp, M_NFSFH); 3329 } 3330 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 3331 more_dirs = fxdr_unsigned(int, *tl); 3332 } 3333 /* 3334 * If at end of rpc data, get the eof boolean 3335 */ 3336 if (!more_dirs) { 3337 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 3338 eof = fxdr_unsigned(int, *tl); 3339 if (tryformoredirs) 3340 more_dirs = !eof; 3341 if (nd->nd_flag & ND_NFSV4) { 3342 error = nfscl_postop_attr(nd, nap, attrflagp, 3343 stuff); 3344 if (error) 3345 goto nfsmout; 3346 } 3347 } 3348 mbuf_freem(nd->nd_mrep); 3349 nd->nd_mrep = NULL; 3350 } 3351 /* 3352 * Fill last record, iff any, out to a multiple of DIRBLKSIZ 3353 * by increasing d_reclen for the last record. 3354 */ 3355 if (blksiz > 0) { 3356 left = DIRBLKSIZ - blksiz; 3357 dp->d_reclen += left; 3358 uio_iov_base_add(uiop, left); 3359 uio_iov_len_add(uiop, -(left)); 3360 uio_uio_resid_add(uiop, -(left)); 3361 uiop->uio_offset += left; 3362 } 3363 3364 /* 3365 * If returning no data, assume end of file. 3366 * If not bigenough, return not end of file, since you aren't 3367 * returning all the data 3368 * Otherwise, return the eof flag from the server. 3369 */ 3370 if (eofp != NULL) { 3371 if (tresid == uio_uio_resid(uiop)) 3372 *eofp = 1; 3373 else if (!bigenough) 3374 *eofp = 0; 3375 else 3376 *eofp = eof; 3377 } 3378 3379 /* 3380 * Add extra empty records to any remaining DIRBLKSIZ chunks. 3381 */ 3382 while (uio_uio_resid(uiop) > 0 && uio_uio_resid(uiop) != tresid) { 3383 dp = (struct dirent *)uio_iov_base(uiop); 3384 dp->d_type = DT_UNKNOWN; 3385 dp->d_fileno = 0; 3386 dp->d_namlen = 0; 3387 dp->d_name[0] = '\0'; 3388 tl = (u_int32_t *)&dp->d_name[4]; 3389 *tl++ = cookie.lval[0]; 3390 *tl = cookie.lval[1]; 3391 dp->d_reclen = DIRBLKSIZ; 3392 uio_iov_base_add(uiop, DIRBLKSIZ); 3393 uio_iov_len_add(uiop, -(DIRBLKSIZ)); 3394 uio_uio_resid_add(uiop, -(DIRBLKSIZ)); 3395 uiop->uio_offset += DIRBLKSIZ; 3396 } 3397 3398nfsmout: 3399 if (nd->nd_mrep != NULL) 3400 mbuf_freem(nd->nd_mrep); 3401 return (error); 3402} 3403#endif /* !APPLE */ 3404 3405/* 3406 * Nfs commit rpc 3407 */ 3408APPLESTATIC int 3409nfsrpc_commit(vnode_t vp, u_quad_t offset, int cnt, struct ucred *cred, 3410 NFSPROC_T *p, u_char *verfp, struct nfsvattr *nap, int *attrflagp, 3411 void *stuff) 3412{ 3413 u_int32_t *tl; 3414 struct nfsrv_descript nfsd, *nd = &nfsd; 3415 nfsattrbit_t attrbits; 3416 int error; 3417 3418 *attrflagp = 0; 3419 NFSCL_REQSTART(nd, NFSPROC_COMMIT, vp); 3420 NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 3421 txdr_hyper(offset, tl); 3422 tl += 2; 3423 *tl = txdr_unsigned(cnt); 3424 if (nd->nd_flag & ND_NFSV4) { 3425 /* 3426 * And do a Getattr op. 3427 */ 3428 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 3429 *tl = txdr_unsigned(NFSV4OP_GETATTR); 3430 NFSGETATTR_ATTRBIT(&attrbits); 3431 (void) nfsrv_putattrbit(nd, &attrbits); 3432 } 3433 error = nfscl_request(nd, vp, p, cred, stuff); 3434 if (error) 3435 return (error); 3436 error = nfscl_wcc_data(nd, vp, nap, attrflagp, NULL, stuff); 3437 if (!error && !nd->nd_repstat) { 3438 NFSM_DISSECT(tl, u_int32_t *, NFSX_VERF); 3439 NFSBCOPY((caddr_t)tl, verfp, NFSX_VERF); 3440 if (nd->nd_flag & ND_NFSV4) 3441 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 3442 } 3443nfsmout: 3444 if (!error && nd->nd_repstat) 3445 error = nd->nd_repstat; 3446 mbuf_freem(nd->nd_mrep); 3447 return (error); 3448} 3449 3450/* 3451 * NFS byte range lock rpc. 3452 * (Mostly just calls one of the three lower level RPC routines.) 3453 */ 3454APPLESTATIC int 3455nfsrpc_advlock(vnode_t vp, off_t size, int op, struct flock *fl, 3456 int reclaim, struct ucred *cred, NFSPROC_T *p) 3457{ 3458 struct nfscllockowner *lp; 3459 struct nfsclclient *clp; 3460 struct nfsfh *nfhp; 3461 struct nfsrv_descript nfsd, *nd = &nfsd; 3462 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 3463 u_int64_t off, len; 3464 off_t start, end; 3465 u_int32_t clidrev = 0; 3466 int error = 0, newone = 0, expireret = 0, retrycnt, donelocally; 3467 int callcnt, dorpc; 3468 3469 /* 3470 * Convert the flock structure into a start and end and do POSIX 3471 * bounds checking. 3472 */ 3473 switch (fl->l_whence) { 3474 case SEEK_SET: 3475 case SEEK_CUR: 3476 /* 3477 * Caller is responsible for adding any necessary offset 3478 * when SEEK_CUR is used. 3479 */ 3480 start = fl->l_start; 3481 off = fl->l_start; 3482 break; 3483 case SEEK_END: 3484 start = size + fl->l_start; 3485 off = size + fl->l_start; 3486 break; 3487 default: 3488 return (EINVAL); 3489 }; 3490 if (start < 0) 3491 return (EINVAL); 3492 if (fl->l_len != 0) { 3493 end = start + fl->l_len - 1; 3494 if (end < start) 3495 return (EINVAL); 3496 } 3497 3498 len = fl->l_len; 3499 if (len == 0) 3500 len = NFS64BITSSET; 3501 retrycnt = 0; 3502 do { 3503 nd->nd_repstat = 0; 3504 if (op == F_GETLK) { 3505 error = nfscl_getcl(vp, cred, p, &clp); 3506 if (error) 3507 return (error); 3508 error = nfscl_lockt(vp, clp, off, len, fl, p); 3509 if (!error) { 3510 clidrev = clp->nfsc_clientidrev; 3511 error = nfsrpc_lockt(nd, vp, clp, off, len, fl, cred, 3512 p); 3513 } else if (error == -1) { 3514 error = 0; 3515 } 3516 nfscl_clientrelease(clp); 3517 } else if (op == F_UNLCK && fl->l_type == F_UNLCK) { 3518 /* 3519 * We must loop around for all lockowner cases. 3520 */ 3521 callcnt = 0; 3522 error = nfscl_getcl(vp, cred, p, &clp); 3523 if (error) 3524 return (error); 3525 do { 3526 error = nfscl_relbytelock(vp, off, len, cred, p, callcnt, 3527 clp, &lp, &dorpc); 3528 /* 3529 * If it returns a NULL lp, we're done. 3530 */ 3531 if (lp == NULL) { 3532 if (callcnt == 0) 3533 nfscl_clientrelease(clp); 3534 else 3535 nfscl_releasealllocks(clp, vp, p); 3536 return (error); 3537 } 3538 if (nmp->nm_clp != NULL) 3539 clidrev = nmp->nm_clp->nfsc_clientidrev; 3540 else 3541 clidrev = 0; 3542 /* 3543 * If the server doesn't support Posix lock semantics, 3544 * only allow locks on the entire file, since it won't 3545 * handle overlapping byte ranges. 3546 * There might still be a problem when a lock 3547 * upgrade/downgrade (read<->write) occurs, since the 3548 * server "might" expect an unlock first? 3549 */ 3550 if (dorpc && (lp->nfsl_open->nfso_posixlock || 3551 (off == 0 && len == NFS64BITSSET))) { 3552 /* 3553 * Since the lock records will go away, we must 3554 * wait for grace and delay here. 3555 */ 3556 do { 3557 error = nfsrpc_locku(nd, nmp, lp, off, len, 3558 NFSV4LOCKT_READ, cred, p, 0); 3559 if ((nd->nd_repstat == NFSERR_GRACE || 3560 nd->nd_repstat == NFSERR_DELAY) && 3561 error == 0) 3562 (void) nfs_catnap(PZERO, (int)nd->nd_repstat, 3563 "nfs_advlock"); 3564 } while ((nd->nd_repstat == NFSERR_GRACE || 3565 nd->nd_repstat == NFSERR_DELAY) && error == 0); 3566 } 3567 callcnt++; 3568 } while (error == 0 && nd->nd_repstat == 0); 3569 nfscl_releasealllocks(clp, vp, p); 3570 } else if (op == F_SETLK) { 3571 error = nfscl_getbytelock(vp, off, len, fl->l_type, cred, p, 3572 NULL, 0, NULL, NULL, &lp, &newone, &donelocally); 3573 if (error || donelocally) { 3574 return (error); 3575 } 3576 if (nmp->nm_clp != NULL) 3577 clidrev = nmp->nm_clp->nfsc_clientidrev; 3578 else 3579 clidrev = 0; 3580 nfhp = VTONFS(vp)->n_fhp; 3581 if (!lp->nfsl_open->nfso_posixlock && 3582 (off != 0 || len != NFS64BITSSET)) { 3583 error = EINVAL; 3584 } else { 3585 error = nfsrpc_lock(nd, nmp, vp, nfhp->nfh_fh, 3586 nfhp->nfh_len, lp, newone, reclaim, off, 3587 len, fl->l_type, cred, p, 0); 3588 } 3589 if (!error) 3590 error = nd->nd_repstat; 3591 nfscl_lockrelease(lp, error, newone); 3592 } else { 3593 error = EINVAL; 3594 } 3595 if (!error) 3596 error = nd->nd_repstat; 3597 if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 3598 error == NFSERR_STALEDONTRECOVER || 3599 error == NFSERR_STALECLIENTID || error == NFSERR_DELAY) { 3600 (void) nfs_catnap(PZERO, error, "nfs_advlock"); 3601 } else if ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) 3602 && clidrev != 0) { 3603 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p); 3604 retrycnt++; 3605 } 3606 } while (error == NFSERR_GRACE || 3607 error == NFSERR_STALECLIENTID || error == NFSERR_DELAY || 3608 error == NFSERR_STALEDONTRECOVER || error == NFSERR_STALESTATEID || 3609 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) && 3610 expireret == 0 && clidrev != 0 && retrycnt < 4)); 3611 if (error && retrycnt >= 4) 3612 error = EIO; 3613 return (error); 3614} 3615 3616/* 3617 * The lower level routine for the LockT case. 3618 */ 3619APPLESTATIC int 3620nfsrpc_lockt(struct nfsrv_descript *nd, vnode_t vp, 3621 struct nfsclclient *clp, u_int64_t off, u_int64_t len, struct flock *fl, 3622 struct ucred *cred, NFSPROC_T *p) 3623{ 3624 u_int32_t *tl; 3625 int error, type, size; 3626 u_int8_t own[NFSV4CL_LOCKNAMELEN]; 3627 3628 NFSCL_REQSTART(nd, NFSPROC_LOCKT, vp); 3629 NFSM_BUILD(tl, u_int32_t *, 7 * NFSX_UNSIGNED); 3630 if (fl->l_type == F_RDLCK) 3631 *tl++ = txdr_unsigned(NFSV4LOCKT_READ); 3632 else 3633 *tl++ = txdr_unsigned(NFSV4LOCKT_WRITE); 3634 txdr_hyper(off, tl); 3635 tl += 2; 3636 txdr_hyper(len, tl); 3637 tl += 2; 3638 *tl++ = clp->nfsc_clientid.lval[0]; 3639 *tl = clp->nfsc_clientid.lval[1]; 3640 nfscl_filllockowner(p, own); 3641 (void) nfsm_strtom(nd, own, NFSV4CL_LOCKNAMELEN); 3642 error = nfscl_request(nd, vp, p, cred, NULL); 3643 if (error) 3644 return (error); 3645 if (nd->nd_repstat == 0) { 3646 fl->l_type = F_UNLCK; 3647 } else if (nd->nd_repstat == NFSERR_DENIED) { 3648 nd->nd_repstat = 0; 3649 fl->l_whence = SEEK_SET; 3650 NFSM_DISSECT(tl, u_int32_t *, 8 * NFSX_UNSIGNED); 3651 fl->l_start = fxdr_hyper(tl); 3652 tl += 2; 3653 len = fxdr_hyper(tl); 3654 tl += 2; 3655 if (len == NFS64BITSSET) 3656 fl->l_len = 0; 3657 else 3658 fl->l_len = len; 3659 type = fxdr_unsigned(int, *tl++); 3660 if (type == NFSV4LOCKT_WRITE) 3661 fl->l_type = F_WRLCK; 3662 else 3663 fl->l_type = F_RDLCK; 3664 /* 3665 * XXX For now, I have no idea what to do with the 3666 * conflicting lock_owner, so I'll just set the pid == 0 3667 * and skip over the lock_owner. 3668 */ 3669 fl->l_pid = (pid_t)0; 3670 tl += 2; 3671 size = fxdr_unsigned(int, *tl); 3672 if (size < 0 || size > NFSV4_OPAQUELIMIT) 3673 error = EBADRPC; 3674 if (!error) 3675 error = nfsm_advance(nd, NFSM_RNDUP(size), -1); 3676 } else if (nd->nd_repstat == NFSERR_STALECLIENTID) 3677 nfscl_initiate_recovery(clp); 3678nfsmout: 3679 mbuf_freem(nd->nd_mrep); 3680 return (error); 3681} 3682 3683/* 3684 * Lower level function that performs the LockU RPC. 3685 */ 3686static int 3687nfsrpc_locku(struct nfsrv_descript *nd, struct nfsmount *nmp, 3688 struct nfscllockowner *lp, u_int64_t off, u_int64_t len, 3689 u_int32_t type, struct ucred *cred, NFSPROC_T *p, int syscred) 3690{ 3691 u_int32_t *tl; 3692 int error; 3693 3694 nfscl_reqstart(nd, NFSPROC_LOCKU, nmp, lp->nfsl_open->nfso_fh, 3695 lp->nfsl_open->nfso_fhlen, NULL); 3696 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID + 6 * NFSX_UNSIGNED); 3697 *tl++ = txdr_unsigned(type); 3698 *tl = txdr_unsigned(lp->nfsl_seqid); 3699 if (nfstest_outofseq && 3700 (arc4random() % nfstest_outofseq) == 0) 3701 *tl = txdr_unsigned(lp->nfsl_seqid + 1); 3702 tl++; 3703 *tl++ = lp->nfsl_stateid.seqid; 3704 *tl++ = lp->nfsl_stateid.other[0]; 3705 *tl++ = lp->nfsl_stateid.other[1]; 3706 *tl++ = lp->nfsl_stateid.other[2]; 3707 txdr_hyper(off, tl); 3708 tl += 2; 3709 txdr_hyper(len, tl); 3710 if (syscred) 3711 nd->nd_flag |= ND_USEGSSNAME; 3712 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 3713 NFS_PROG, NFS_VER4, NULL, 1, NULL); 3714 NFSCL_INCRSEQID(lp->nfsl_seqid, nd); 3715 if (error) 3716 return (error); 3717 if (nd->nd_repstat == 0) { 3718 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID); 3719 lp->nfsl_stateid.seqid = *tl++; 3720 lp->nfsl_stateid.other[0] = *tl++; 3721 lp->nfsl_stateid.other[1] = *tl++; 3722 lp->nfsl_stateid.other[2] = *tl; 3723 } else if (nd->nd_repstat == NFSERR_STALESTATEID) 3724 nfscl_initiate_recovery(lp->nfsl_open->nfso_own->nfsow_clp); 3725nfsmout: 3726 mbuf_freem(nd->nd_mrep); 3727 return (error); 3728} 3729 3730/* 3731 * The actual Lock RPC. 3732 */ 3733APPLESTATIC int 3734nfsrpc_lock(struct nfsrv_descript *nd, struct nfsmount *nmp, vnode_t vp, 3735 u_int8_t *nfhp, int fhlen, struct nfscllockowner *lp, int newone, 3736 int reclaim, u_int64_t off, u_int64_t len, short type, struct ucred *cred, 3737 NFSPROC_T *p, int syscred) 3738{ 3739 u_int32_t *tl; 3740 int error, size; 3741 3742 nfscl_reqstart(nd, NFSPROC_LOCK, nmp, nfhp, fhlen, NULL); 3743 NFSM_BUILD(tl, u_int32_t *, 7 * NFSX_UNSIGNED); 3744 if (type == F_RDLCK) 3745 *tl++ = txdr_unsigned(NFSV4LOCKT_READ); 3746 else 3747 *tl++ = txdr_unsigned(NFSV4LOCKT_WRITE); 3748 *tl++ = txdr_unsigned(reclaim); 3749 txdr_hyper(off, tl); 3750 tl += 2; 3751 txdr_hyper(len, tl); 3752 tl += 2; 3753 if (newone) { 3754 *tl = newnfs_true; 3755 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID + 3756 2 * NFSX_UNSIGNED + NFSX_HYPER); 3757 *tl++ = txdr_unsigned(lp->nfsl_open->nfso_own->nfsow_seqid); 3758 *tl++ = lp->nfsl_open->nfso_stateid.seqid; 3759 *tl++ = lp->nfsl_open->nfso_stateid.other[0]; 3760 *tl++ = lp->nfsl_open->nfso_stateid.other[1]; 3761 *tl++ = lp->nfsl_open->nfso_stateid.other[2]; 3762 *tl++ = txdr_unsigned(lp->nfsl_seqid); 3763 *tl++ = lp->nfsl_open->nfso_own->nfsow_clp->nfsc_clientid.lval[0]; 3764 *tl = lp->nfsl_open->nfso_own->nfsow_clp->nfsc_clientid.lval[1]; 3765 (void) nfsm_strtom(nd, lp->nfsl_owner, NFSV4CL_LOCKNAMELEN); 3766 } else { 3767 *tl = newnfs_false; 3768 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID + NFSX_UNSIGNED); 3769 *tl++ = lp->nfsl_stateid.seqid; 3770 *tl++ = lp->nfsl_stateid.other[0]; 3771 *tl++ = lp->nfsl_stateid.other[1]; 3772 *tl++ = lp->nfsl_stateid.other[2]; 3773 *tl = txdr_unsigned(lp->nfsl_seqid); 3774 if (nfstest_outofseq && 3775 (arc4random() % nfstest_outofseq) == 0) 3776 *tl = txdr_unsigned(lp->nfsl_seqid + 1); 3777 } 3778 if (syscred) 3779 nd->nd_flag |= ND_USEGSSNAME; 3780 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, vp, p, cred, 3781 NFS_PROG, NFS_VER4, NULL, 1, NULL); 3782 if (error) 3783 return (error); 3784 if (newone) 3785 NFSCL_INCRSEQID(lp->nfsl_open->nfso_own->nfsow_seqid, nd); 3786 NFSCL_INCRSEQID(lp->nfsl_seqid, nd); 3787 if (nd->nd_repstat == 0) { 3788 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID); 3789 lp->nfsl_stateid.seqid = *tl++; 3790 lp->nfsl_stateid.other[0] = *tl++; 3791 lp->nfsl_stateid.other[1] = *tl++; 3792 lp->nfsl_stateid.other[2] = *tl; 3793 } else if (nd->nd_repstat == NFSERR_DENIED) { 3794 NFSM_DISSECT(tl, u_int32_t *, 8 * NFSX_UNSIGNED); 3795 size = fxdr_unsigned(int, *(tl + 7)); 3796 if (size < 0 || size > NFSV4_OPAQUELIMIT) 3797 error = EBADRPC; 3798 if (!error) 3799 error = nfsm_advance(nd, NFSM_RNDUP(size), -1); 3800 } else if (nd->nd_repstat == NFSERR_STALESTATEID) 3801 nfscl_initiate_recovery(lp->nfsl_open->nfso_own->nfsow_clp); 3802nfsmout: 3803 mbuf_freem(nd->nd_mrep); 3804 return (error); 3805} 3806 3807/* 3808 * nfs statfs rpc 3809 * (always called with the vp for the mount point) 3810 */ 3811APPLESTATIC int 3812nfsrpc_statfs(vnode_t vp, struct nfsstatfs *sbp, struct nfsfsinfo *fsp, 3813 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, 3814 void *stuff) 3815{ 3816 u_int32_t *tl = NULL; 3817 struct nfsrv_descript nfsd, *nd = &nfsd; 3818 struct nfsmount *nmp; 3819 nfsattrbit_t attrbits; 3820 int error; 3821 3822 *attrflagp = 0; 3823 nmp = VFSTONFS(vnode_mount(vp)); 3824 if (NFSHASNFSV4(nmp)) { 3825 /* 3826 * For V4, you actually do a getattr. 3827 */ 3828 NFSCL_REQSTART(nd, NFSPROC_GETATTR, vp); 3829 NFSSTATFS_GETATTRBIT(&attrbits); 3830 (void) nfsrv_putattrbit(nd, &attrbits); 3831 nd->nd_flag |= ND_USEGSSNAME; 3832 error = nfscl_request(nd, vp, p, cred, stuff); 3833 if (error) 3834 return (error); 3835 if (nd->nd_repstat == 0) { 3836 error = nfsv4_loadattr(nd, NULL, nap, NULL, NULL, 0, 3837 NULL, NULL, sbp, fsp, NULL, 0, NULL, NULL, NULL, p, 3838 cred); 3839 if (!error) { 3840 nmp->nm_fsid[0] = nap->na_filesid[0]; 3841 nmp->nm_fsid[1] = nap->na_filesid[1]; 3842 NFSSETHASSETFSID(nmp); 3843 *attrflagp = 1; 3844 } 3845 } else { 3846 error = nd->nd_repstat; 3847 } 3848 if (error) 3849 goto nfsmout; 3850 } else { 3851 NFSCL_REQSTART(nd, NFSPROC_FSSTAT, vp); 3852 error = nfscl_request(nd, vp, p, cred, stuff); 3853 if (error) 3854 return (error); 3855 if (nd->nd_flag & ND_NFSV3) { 3856 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 3857 if (error) 3858 goto nfsmout; 3859 } 3860 if (nd->nd_repstat) { 3861 error = nd->nd_repstat; 3862 goto nfsmout; 3863 } 3864 NFSM_DISSECT(tl, u_int32_t *, 3865 NFSX_STATFS(nd->nd_flag & ND_NFSV3)); 3866 } 3867 if (NFSHASNFSV3(nmp)) { 3868 sbp->sf_tbytes = fxdr_hyper(tl); tl += 2; 3869 sbp->sf_fbytes = fxdr_hyper(tl); tl += 2; 3870 sbp->sf_abytes = fxdr_hyper(tl); tl += 2; 3871 sbp->sf_tfiles = fxdr_hyper(tl); tl += 2; 3872 sbp->sf_ffiles = fxdr_hyper(tl); tl += 2; 3873 sbp->sf_afiles = fxdr_hyper(tl); tl += 2; 3874 sbp->sf_invarsec = fxdr_unsigned(u_int32_t, *tl); 3875 } else if (NFSHASNFSV4(nmp) == 0) { 3876 sbp->sf_tsize = fxdr_unsigned(u_int32_t, *tl++); 3877 sbp->sf_bsize = fxdr_unsigned(u_int32_t, *tl++); 3878 sbp->sf_blocks = fxdr_unsigned(u_int32_t, *tl++); 3879 sbp->sf_bfree = fxdr_unsigned(u_int32_t, *tl++); 3880 sbp->sf_bavail = fxdr_unsigned(u_int32_t, *tl); 3881 } 3882nfsmout: 3883 mbuf_freem(nd->nd_mrep); 3884 return (error); 3885} 3886 3887/* 3888 * nfs pathconf rpc 3889 */ 3890APPLESTATIC int 3891nfsrpc_pathconf(vnode_t vp, struct nfsv3_pathconf *pc, 3892 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, 3893 void *stuff) 3894{ 3895 struct nfsrv_descript nfsd, *nd = &nfsd; 3896 struct nfsmount *nmp; 3897 u_int32_t *tl; 3898 nfsattrbit_t attrbits; 3899 int error; 3900 3901 *attrflagp = 0; 3902 nmp = VFSTONFS(vnode_mount(vp)); 3903 if (NFSHASNFSV4(nmp)) { 3904 /* 3905 * For V4, you actually do a getattr. 3906 */ 3907 NFSCL_REQSTART(nd, NFSPROC_GETATTR, vp); 3908 NFSPATHCONF_GETATTRBIT(&attrbits); 3909 (void) nfsrv_putattrbit(nd, &attrbits); 3910 nd->nd_flag |= ND_USEGSSNAME; 3911 error = nfscl_request(nd, vp, p, cred, stuff); 3912 if (error) 3913 return (error); 3914 if (nd->nd_repstat == 0) { 3915 error = nfsv4_loadattr(nd, NULL, nap, NULL, NULL, 0, 3916 pc, NULL, NULL, NULL, NULL, 0, NULL, NULL, NULL, p, 3917 cred); 3918 if (!error) 3919 *attrflagp = 1; 3920 } else { 3921 error = nd->nd_repstat; 3922 } 3923 } else { 3924 NFSCL_REQSTART(nd, NFSPROC_PATHCONF, vp); 3925 error = nfscl_request(nd, vp, p, cred, stuff); 3926 if (error) 3927 return (error); 3928 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 3929 if (nd->nd_repstat && !error) 3930 error = nd->nd_repstat; 3931 if (!error) { 3932 NFSM_DISSECT(tl, u_int32_t *, NFSX_V3PATHCONF); 3933 pc->pc_linkmax = fxdr_unsigned(u_int32_t, *tl++); 3934 pc->pc_namemax = fxdr_unsigned(u_int32_t, *tl++); 3935 pc->pc_notrunc = fxdr_unsigned(u_int32_t, *tl++); 3936 pc->pc_chownrestricted = 3937 fxdr_unsigned(u_int32_t, *tl++); 3938 pc->pc_caseinsensitive = 3939 fxdr_unsigned(u_int32_t, *tl++); 3940 pc->pc_casepreserving = fxdr_unsigned(u_int32_t, *tl); 3941 } 3942 } 3943nfsmout: 3944 mbuf_freem(nd->nd_mrep); 3945 return (error); 3946} 3947 3948/* 3949 * nfs version 3 fsinfo rpc call 3950 */ 3951APPLESTATIC int 3952nfsrpc_fsinfo(vnode_t vp, struct nfsfsinfo *fsp, struct ucred *cred, 3953 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff) 3954{ 3955 u_int32_t *tl; 3956 struct nfsrv_descript nfsd, *nd = &nfsd; 3957 int error; 3958 3959 *attrflagp = 0; 3960 NFSCL_REQSTART(nd, NFSPROC_FSINFO, vp); 3961 error = nfscl_request(nd, vp, p, cred, stuff); 3962 if (error) 3963 return (error); 3964 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 3965 if (nd->nd_repstat && !error) 3966 error = nd->nd_repstat; 3967 if (!error) { 3968 NFSM_DISSECT(tl, u_int32_t *, NFSX_V3FSINFO); 3969 fsp->fs_rtmax = fxdr_unsigned(u_int32_t, *tl++); 3970 fsp->fs_rtpref = fxdr_unsigned(u_int32_t, *tl++); 3971 fsp->fs_rtmult = fxdr_unsigned(u_int32_t, *tl++); 3972 fsp->fs_wtmax = fxdr_unsigned(u_int32_t, *tl++); 3973 fsp->fs_wtpref = fxdr_unsigned(u_int32_t, *tl++); 3974 fsp->fs_wtmult = fxdr_unsigned(u_int32_t, *tl++); 3975 fsp->fs_dtpref = fxdr_unsigned(u_int32_t, *tl++); 3976 fsp->fs_maxfilesize = fxdr_hyper(tl); 3977 tl += 2; 3978 fxdr_nfsv3time(tl, &fsp->fs_timedelta); 3979 tl += 2; 3980 fsp->fs_properties = fxdr_unsigned(u_int32_t, *tl); 3981 } 3982nfsmout: 3983 mbuf_freem(nd->nd_mrep); 3984 return (error); 3985} 3986 3987/* 3988 * This function performs the Renew RPC. 3989 */ 3990APPLESTATIC int 3991nfsrpc_renew(struct nfsclclient *clp, struct ucred *cred, NFSPROC_T *p) 3992{ 3993 u_int32_t *tl; 3994 struct nfsrv_descript nfsd; 3995 struct nfsrv_descript *nd = &nfsd; 3996 struct nfsmount *nmp; 3997 int error; 3998 3999 nmp = clp->nfsc_nmp; 4000 if (nmp == NULL) 4001 return (0); 4002 nfscl_reqstart(nd, NFSPROC_RENEW, nmp, NULL, 0, NULL); 4003 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 4004 *tl++ = clp->nfsc_clientid.lval[0]; 4005 *tl = clp->nfsc_clientid.lval[1]; 4006 nd->nd_flag |= ND_USEGSSNAME; 4007 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 4008 NFS_PROG, NFS_VER4, NULL, 1, NULL); 4009 if (error) 4010 return (error); 4011 error = nd->nd_repstat; 4012 mbuf_freem(nd->nd_mrep); 4013 return (error); 4014} 4015 4016/* 4017 * This function performs the Releaselockowner RPC. 4018 */ 4019APPLESTATIC int 4020nfsrpc_rellockown(struct nfsmount *nmp, struct nfscllockowner *lp, 4021 struct ucred *cred, NFSPROC_T *p) 4022{ 4023 struct nfsrv_descript nfsd, *nd = &nfsd; 4024 u_int32_t *tl; 4025 int error; 4026 4027 nfscl_reqstart(nd, NFSPROC_RELEASELCKOWN, nmp, NULL, 0, NULL); 4028 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 4029 *tl++ = nmp->nm_clp->nfsc_clientid.lval[0]; 4030 *tl = nmp->nm_clp->nfsc_clientid.lval[1]; 4031 (void) nfsm_strtom(nd, lp->nfsl_owner, NFSV4CL_LOCKNAMELEN); 4032 nd->nd_flag |= ND_USEGSSNAME; 4033 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 4034 NFS_PROG, NFS_VER4, NULL, 1, NULL); 4035 if (error) 4036 return (error); 4037 error = nd->nd_repstat; 4038 mbuf_freem(nd->nd_mrep); 4039 return (error); 4040} 4041 4042/* 4043 * This function performs the Compound to get the mount pt FH. 4044 */ 4045APPLESTATIC int 4046nfsrpc_getdirpath(struct nfsmount *nmp, u_char *dirpath, struct ucred *cred, 4047 NFSPROC_T *p) 4048{ 4049 u_int32_t *tl; 4050 struct nfsrv_descript nfsd; 4051 struct nfsrv_descript *nd = &nfsd; 4052 u_char *cp, *cp2; 4053 int error, cnt, len, setnil; 4054 u_int32_t *opcntp; 4055 4056 nfscl_reqstart(nd, NFSPROC_PUTROOTFH, nmp, NULL, 0, &opcntp); 4057 cp = dirpath; 4058 cnt = 0; 4059 do { 4060 setnil = 0; 4061 while (*cp == '/') 4062 cp++; 4063 cp2 = cp; 4064 while (*cp2 != '\0' && *cp2 != '/') 4065 cp2++; 4066 if (*cp2 == '/') { 4067 setnil = 1; 4068 *cp2 = '\0'; 4069 } 4070 if (cp2 != cp) { 4071 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 4072 *tl = txdr_unsigned(NFSV4OP_LOOKUP); 4073 nfsm_strtom(nd, cp, strlen(cp)); 4074 cnt++; 4075 } 4076 if (setnil) 4077 *cp2++ = '/'; 4078 cp = cp2; 4079 } while (*cp != '\0'); 4080 *opcntp = txdr_unsigned(2 + cnt); 4081 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 4082 *tl = txdr_unsigned(NFSV4OP_GETFH); 4083 nd->nd_flag |= ND_USEGSSNAME; 4084 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 4085 NFS_PROG, NFS_VER4, NULL, 1, NULL); 4086 if (error) 4087 return (error); 4088 if (nd->nd_repstat == 0) { 4089 NFSM_DISSECT(tl, u_int32_t *, (3 + 2 * cnt) * NFSX_UNSIGNED); 4090 tl += (2 + 2 * cnt); 4091 if ((len = fxdr_unsigned(int, *tl)) <= 0 || 4092 len > NFSX_FHMAX) { 4093 nd->nd_repstat = NFSERR_BADXDR; 4094 } else { 4095 nd->nd_repstat = nfsrv_mtostr(nd, nmp->nm_fh, len); 4096 if (nd->nd_repstat == 0) 4097 nmp->nm_fhsize = len; 4098 } 4099 } 4100 error = nd->nd_repstat; 4101nfsmout: 4102 mbuf_freem(nd->nd_mrep); 4103 return (error); 4104} 4105 4106/* 4107 * This function performs the Delegreturn RPC. 4108 */ 4109APPLESTATIC int 4110nfsrpc_delegreturn(struct nfscldeleg *dp, struct ucred *cred, 4111 struct nfsmount *nmp, NFSPROC_T *p, int syscred) 4112{ 4113 u_int32_t *tl; 4114 struct nfsrv_descript nfsd; 4115 struct nfsrv_descript *nd = &nfsd; 4116 int error; 4117 4118 nfscl_reqstart(nd, NFSPROC_DELEGRETURN, nmp, dp->nfsdl_fh, 4119 dp->nfsdl_fhlen, NULL); 4120 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID); 4121 *tl++ = dp->nfsdl_stateid.seqid; 4122 *tl++ = dp->nfsdl_stateid.other[0]; 4123 *tl++ = dp->nfsdl_stateid.other[1]; 4124 *tl = dp->nfsdl_stateid.other[2]; 4125 if (syscred) 4126 nd->nd_flag |= ND_USEGSSNAME; 4127 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 4128 NFS_PROG, NFS_VER4, NULL, 1, NULL); 4129 if (error) 4130 return (error); 4131 error = nd->nd_repstat; 4132 mbuf_freem(nd->nd_mrep); 4133 return (error); 4134} 4135 4136/* 4137 * nfs getacl call. 4138 */ 4139APPLESTATIC int 4140nfsrpc_getacl(vnode_t vp, struct ucred *cred, NFSPROC_T *p, 4141 struct acl *aclp, void *stuff) 4142{ 4143 struct nfsrv_descript nfsd, *nd = &nfsd; 4144 int error; 4145 nfsattrbit_t attrbits; 4146 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 4147 4148 if (nfsrv_useacl == 0 || !NFSHASNFSV4(nmp)) 4149 return (EOPNOTSUPP); 4150 NFSCL_REQSTART(nd, NFSPROC_GETACL, vp); 4151 NFSZERO_ATTRBIT(&attrbits); 4152 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_ACL); 4153 (void) nfsrv_putattrbit(nd, &attrbits); 4154 error = nfscl_request(nd, vp, p, cred, stuff); 4155 if (error) 4156 return (error); 4157 if (!nd->nd_repstat) 4158 error = nfsv4_loadattr(nd, vp, NULL, NULL, NULL, 0, NULL, 4159 NULL, NULL, NULL, aclp, 0, NULL, NULL, NULL, p, cred); 4160 else 4161 error = nd->nd_repstat; 4162 mbuf_freem(nd->nd_mrep); 4163 return (error); 4164} 4165 4166/* 4167 * nfs setacl call. 4168 */ 4169APPLESTATIC int 4170nfsrpc_setacl(vnode_t vp, struct ucred *cred, NFSPROC_T *p, 4171 struct acl *aclp, void *stuff) 4172{ 4173 int error; 4174 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 4175 4176 if (nfsrv_useacl == 0 || !NFSHASNFSV4(nmp)) 4177 return (EOPNOTSUPP); 4178 error = nfsrpc_setattr(vp, NULL, aclp, cred, p, NULL, NULL, stuff); 4179 return (error); 4180} 4181 4182/* 4183 * nfs setacl call. 4184 */ 4185static int 4186nfsrpc_setaclrpc(vnode_t vp, struct ucred *cred, NFSPROC_T *p, 4187 struct acl *aclp, nfsv4stateid_t *stateidp, void *stuff) 4188{ 4189 struct nfsrv_descript nfsd, *nd = &nfsd; 4190 int error; 4191 nfsattrbit_t attrbits; 4192 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 4193 4194 if (!NFSHASNFSV4(nmp)) 4195 return (EOPNOTSUPP); 4196 NFSCL_REQSTART(nd, NFSPROC_SETACL, vp); 4197 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID); 4198 NFSZERO_ATTRBIT(&attrbits); 4199 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_ACL); 4200 (void) nfsv4_fillattr(nd, vnode_mount(vp), vp, aclp, NULL, NULL, 0, 4201 &attrbits, NULL, NULL, 0, 0, 0, 0, (uint64_t)0); 4202 error = nfscl_request(nd, vp, p, cred, stuff); 4203 if (error) 4204 return (error); 4205 /* Don't care about the pre/postop attributes */ 4206 mbuf_freem(nd->nd_mrep); 4207 return (nd->nd_repstat); 4208} 4209