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