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