nfs_clrpcops.c revision 195510
1/*- 2 * Copyright (c) 1989, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley by 6 * Rick Macklem at The University of Guelph. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 4. Neither the name of the University nor the names of its contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 * 32 */ 33 34#include <sys/cdefs.h> 35__FBSDID("$FreeBSD: head/sys/fs/nfsclient/nfs_clrpcops.c 195510 2009-07-09 19:00:29Z rmacklem $"); 36 37/* 38 * Rpc op calls, generally called from the vnode op calls or through the 39 * buffer cache, for NFS v2, 3 and 4. 40 * These do not normally make any changes to vnode arguments or use 41 * structures that might change between the VFS variants. The returned 42 * arguments are all at the end, after the NFSPROC_T *p one. 43 */ 44 45#ifndef APPLEKEXT 46#include <fs/nfs/nfsport.h> 47 48/* 49 * Global variables 50 */ 51extern int nfs_numnfscbd; 52extern struct timeval nfsboottime; 53extern u_int32_t newnfs_false, newnfs_true; 54extern nfstype nfsv34_type[9]; 55extern int nfsrv_useacl; 56extern char nfsv4_callbackaddr[INET6_ADDRSTRLEN]; 57NFSCLSTATEMUTEX; 58int nfstest_outofseq = 0; 59int nfscl_assumeposixlocks = 1; 60int nfscl_enablecallb = 0; 61short nfsv4_cbport = NFSV4_CBPORT; 62int nfstest_openallsetattr = 0; 63#endif /* !APPLEKEXT */ 64 65#define DIRHDSIZ (sizeof (struct dirent) - (MAXNAMLEN + 1)) 66 67static int nfsrpc_setattrrpc(vnode_t , struct vattr *, nfsv4stateid_t *, 68 struct ucred *, NFSPROC_T *, struct nfsvattr *, int *, void *); 69static int nfsrpc_readrpc(vnode_t , struct uio *, struct ucred *, 70 nfsv4stateid_t *, NFSPROC_T *, struct nfsvattr *, int *, void *); 71static int nfsrpc_writerpc(vnode_t , struct uio *, int *, u_char *, 72 struct ucred *, nfsv4stateid_t *, NFSPROC_T *, struct nfsvattr *, int *, 73 void *); 74static int nfsrpc_createv23(vnode_t , char *, int, struct vattr *, 75 nfsquad_t, int, struct ucred *, NFSPROC_T *, struct nfsvattr *, 76 struct nfsvattr *, struct nfsfh **, int *, int *, void *); 77static int nfsrpc_createv4(vnode_t , char *, int, struct vattr *, 78 nfsquad_t, int, struct nfsclowner *, struct nfscldeleg **, struct ucred *, 79 NFSPROC_T *, struct nfsvattr *, struct nfsvattr *, struct nfsfh **, int *, 80 int *, void *, int *); 81static int nfsrpc_locku(struct nfsrv_descript *, struct nfsmount *, 82 struct nfscllockowner *, u_int64_t, u_int64_t, 83 u_int32_t, struct ucred *, NFSPROC_T *, int); 84#ifdef NFS4_ACL_EXTATTR_NAME 85static int nfsrpc_setaclrpc(vnode_t, struct ucred *, NFSPROC_T *, 86 struct acl *, nfsv4stateid_t *, void *); 87#endif 88 89/* 90 * nfs null call from vfs. 91 */ 92APPLESTATIC int 93nfsrpc_null(vnode_t vp, struct ucred *cred, NFSPROC_T *p) 94{ 95 int error; 96 struct nfsrv_descript nfsd, *nd = &nfsd; 97 98 NFSCL_REQSTART(nd, NFSPROC_NULL, vp); 99 error = nfscl_request(nd, vp, p, cred, NULL); 100 if (nd->nd_repstat && !error) 101 error = nd->nd_repstat; 102 mbuf_freem(nd->nd_mrep); 103 return (error); 104} 105 106/* 107 * nfs access rpc op. 108 * For nfs version 3 and 4, use the access rpc to check accessibility. If file 109 * modes are changed on the server, accesses might still fail later. 110 */ 111APPLESTATIC int 112nfsrpc_access(vnode_t vp, int acmode, struct ucred *cred, 113 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp) 114{ 115 int error; 116 u_int32_t mode, rmode; 117 118 if (acmode & VREAD) 119 mode = NFSACCESS_READ; 120 else 121 mode = 0; 122 if (vnode_vtype(vp) == VDIR) { 123 if (acmode & VWRITE) 124 mode |= (NFSACCESS_MODIFY | NFSACCESS_EXTEND | 125 NFSACCESS_DELETE); 126 if (acmode & VEXEC) 127 mode |= NFSACCESS_LOOKUP; 128 } else { 129 if (acmode & VWRITE) 130 mode |= (NFSACCESS_MODIFY | NFSACCESS_EXTEND); 131 if (acmode & VEXEC) 132 mode |= NFSACCESS_EXECUTE; 133 } 134 135 /* 136 * Now, just call nfsrpc_accessrpc() to do the actual RPC. 137 */ 138 error = nfsrpc_accessrpc(vp, mode, cred, p, nap, attrflagp, &rmode, 139 NULL); 140 141 /* 142 * The NFS V3 spec does not clarify whether or not 143 * the returned access bits can be a superset of 144 * the ones requested, so... 145 */ 146 if (!error && (rmode & mode) != mode) 147 error = EACCES; 148 return (error); 149} 150 151/* 152 * The actual rpc, separated out for Darwin. 153 */ 154APPLESTATIC int 155nfsrpc_accessrpc(vnode_t vp, u_int32_t mode, struct ucred *cred, 156 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, u_int32_t *rmodep, 157 void *stuff) 158{ 159 u_int32_t *tl; 160 u_int32_t supported, rmode; 161 int error; 162 struct nfsrv_descript nfsd, *nd = &nfsd; 163 nfsattrbit_t attrbits; 164 165 *attrflagp = 0; 166 supported = mode; 167 NFSCL_REQSTART(nd, NFSPROC_ACCESS, vp); 168 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 169 *tl = txdr_unsigned(mode); 170 if (nd->nd_flag & ND_NFSV4) { 171 /* 172 * And do a Getattr op. 173 */ 174 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 175 *tl = txdr_unsigned(NFSV4OP_GETATTR); 176 NFSGETATTR_ATTRBIT(&attrbits); 177 (void) nfsrv_putattrbit(nd, &attrbits); 178 } 179 error = nfscl_request(nd, vp, p, cred, stuff); 180 if (error) 181 return (error); 182 if (nd->nd_flag & ND_NFSV3) { 183 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 184 if (error) 185 goto nfsmout; 186 } 187 if (!nd->nd_repstat) { 188 if (nd->nd_flag & ND_NFSV4) { 189 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 190 supported = fxdr_unsigned(u_int32_t, *tl++); 191 } else { 192 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 193 } 194 rmode = fxdr_unsigned(u_int32_t, *tl); 195 if (nd->nd_flag & ND_NFSV4) 196 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 197 198 /* 199 * It's not obvious what should be done about 200 * unsupported access modes. For now, be paranoid 201 * and clear the unsupported ones. 202 */ 203 rmode &= supported; 204 *rmodep = rmode; 205 } else 206 error = nd->nd_repstat; 207nfsmout: 208 mbuf_freem(nd->nd_mrep); 209 return (error); 210} 211 212/* 213 * nfs open rpc 214 */ 215APPLESTATIC int 216nfsrpc_open(vnode_t vp, int amode, struct ucred *cred, NFSPROC_T *p) 217{ 218 struct nfsclopen *op; 219 struct nfscldeleg *dp; 220 struct nfsfh *nfhp; 221 struct nfsnode *np = VTONFS(vp); 222 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 223 u_int32_t mode, clidrev; 224 int ret, newone, error, expireret = 0, retrycnt; 225 226 /* 227 * For NFSv4, Open Ops are only done on Regular Files. 228 */ 229 if (vnode_vtype(vp) != VREG) 230 return (0); 231 mode = 0; 232 if (amode & FREAD) 233 mode |= NFSV4OPEN_ACCESSREAD; 234 if (amode & FWRITE) 235 mode |= NFSV4OPEN_ACCESSWRITE; 236 nfhp = np->n_fhp; 237 238 retrycnt = 0; 239#ifdef notdef 240{ char name[100]; int namel; 241namel = (np->n_v4->n4_namelen < 100) ? np->n_v4->n4_namelen : 99; 242bcopy(NFS4NODENAME(np->n_v4), name, namel); 243name[namel] = '\0'; 244printf("rpcopen p=0x%x name=%s",p->p_pid,name); 245if (nfhp->nfh_len > 0) printf(" fh=0x%x\n",nfhp->nfh_fh[12]); 246else printf(" fhl=0\n"); 247} 248#endif 249 do { 250 dp = NULL; 251 error = nfscl_open(vp, nfhp->nfh_fh, nfhp->nfh_len, mode, 1, 252 cred, p, NULL, &op, &newone, &ret, 1); 253 if (error) { 254 return (error); 255 } 256 if (nmp->nm_clp != NULL) 257 clidrev = nmp->nm_clp->nfsc_clientidrev; 258 else 259 clidrev = 0; 260 if (ret == NFSCLOPEN_DOOPEN) { 261 if (np->n_v4 != NULL) { 262 error = nfsrpc_openrpc(nmp, vp, np->n_v4->n4_data, 263 np->n_v4->n4_fhlen, np->n_fhp->nfh_fh, 264 np->n_fhp->nfh_len, mode, op, 265 NFS4NODENAME(np->n_v4), np->n_v4->n4_namelen, &dp, 266 0, 0x0, cred, p, 0, 0); 267 if (dp != NULL) { 268#ifdef APPLE 269 OSBitAndAtomic((int32_t)~NDELEGMOD, (UInt32 *)&np->n_flag); 270#else 271 NFSLOCKNODE(np); 272 np->n_flag &= ~NDELEGMOD; 273 NFSUNLOCKNODE(np); 274#endif 275 (void) nfscl_deleg(nmp->nm_mountp, 276 op->nfso_own->nfsow_clp, 277 nfhp->nfh_fh, nfhp->nfh_len, cred, p, &dp); 278 } 279 } else { 280 error = EIO; 281 } 282 newnfs_copyincred(cred, &op->nfso_cred); 283 } 284 285 /* 286 * nfso_opencnt is the count of how many VOP_OPEN()s have 287 * been done on this Open successfully and a VOP_CLOSE() 288 * is expected for each of these. 289 * If error is non-zero, don't increment it, since the Open 290 * hasn't succeeded yet. 291 */ 292 if (!error) 293 op->nfso_opencnt++; 294 nfscl_openrelease(op, error, newone); 295 if (error == NFSERR_GRACE || error == NFSERR_STALECLIENTID || 296 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY) { 297 (void) nfs_catnap(PZERO, "nfs_open"); 298 } else if ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) 299 && clidrev != 0) { 300 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p); 301 retrycnt++; 302 } 303 } while (error == NFSERR_GRACE || error == NFSERR_STALECLIENTID || 304 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 305 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) && 306 expireret == 0 && clidrev != 0 && retrycnt < 4)); 307 if (error && retrycnt >= 4) 308 error = EIO; 309 return (error); 310} 311 312/* 313 * the actual open rpc 314 */ 315APPLESTATIC int 316nfsrpc_openrpc(struct nfsmount *nmp, vnode_t vp, u_int8_t *nfhp, int fhlen, 317 u_int8_t *newfhp, int newfhlen, u_int32_t mode, struct nfsclopen *op, 318 u_int8_t *name, int namelen, struct nfscldeleg **dpp, 319 int reclaim, u_int32_t delegtype, struct ucred *cred, NFSPROC_T *p, 320 int syscred, int recursed) 321{ 322 u_int32_t *tl; 323 struct nfsrv_descript nfsd, *nd = &nfsd; 324 struct nfscldeleg *dp, *ndp = NULL; 325 struct nfsvattr nfsva; 326 u_int32_t rflags, deleg; 327 nfsattrbit_t attrbits; 328 int error, ret, acesize, limitby; 329 330 dp = *dpp; 331 *dpp = NULL; 332 nfscl_reqstart(nd, NFSPROC_OPEN, nmp, nfhp, fhlen, NULL); 333 NFSM_BUILD(tl, u_int32_t *, 5 * NFSX_UNSIGNED); 334 *tl++ = txdr_unsigned(op->nfso_own->nfsow_seqid); 335 *tl++ = txdr_unsigned(mode & NFSV4OPEN_ACCESSBOTH); 336 *tl++ = txdr_unsigned((mode >> NFSLCK_SHIFT) & NFSV4OPEN_DENYBOTH); 337 *tl++ = op->nfso_own->nfsow_clp->nfsc_clientid.lval[0]; 338 *tl = op->nfso_own->nfsow_clp->nfsc_clientid.lval[1]; 339 (void) nfsm_strtom(nd, op->nfso_own->nfsow_owner, NFSV4CL_LOCKNAMELEN); 340 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 341 *tl++ = txdr_unsigned(NFSV4OPEN_NOCREATE); 342 if (reclaim) { 343 *tl = txdr_unsigned(NFSV4OPEN_CLAIMPREVIOUS); 344 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 345 *tl = txdr_unsigned(delegtype); 346 } else { 347 if (dp != NULL) { 348 *tl = txdr_unsigned(NFSV4OPEN_CLAIMDELEGATECUR); 349 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID); 350 *tl++ = dp->nfsdl_stateid.seqid; 351 *tl++ = dp->nfsdl_stateid.other[0]; 352 *tl++ = dp->nfsdl_stateid.other[1]; 353 *tl = dp->nfsdl_stateid.other[2]; 354 } else { 355 *tl = txdr_unsigned(NFSV4OPEN_CLAIMNULL); 356 } 357 (void) nfsm_strtom(nd, name, namelen); 358 } 359 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 360 *tl = txdr_unsigned(NFSV4OP_GETATTR); 361 NFSZERO_ATTRBIT(&attrbits); 362 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_CHANGE); 363 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_TIMEMODIFY); 364 (void) nfsrv_putattrbit(nd, &attrbits); 365 if (syscred) 366 nd->nd_flag |= ND_USEGSSNAME; 367 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, vp, p, cred, 368 NFS_PROG, NFS_VER4, NULL, 1, NULL); 369 if (error) 370 return (error); 371 NFSCL_INCRSEQID(op->nfso_own->nfsow_seqid, nd); 372 if (!nd->nd_repstat) { 373 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID + 374 6 * NFSX_UNSIGNED); 375 op->nfso_stateid.seqid = *tl++; 376 op->nfso_stateid.other[0] = *tl++; 377 op->nfso_stateid.other[1] = *tl++; 378 op->nfso_stateid.other[2] = *tl; 379 rflags = fxdr_unsigned(u_int32_t, *(tl + 6)); 380 error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL); 381 if (error) 382 goto nfsmout; 383 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 384 deleg = fxdr_unsigned(u_int32_t, *tl); 385 if (deleg == NFSV4OPEN_DELEGATEREAD || 386 deleg == NFSV4OPEN_DELEGATEWRITE) { 387 if (!(op->nfso_own->nfsow_clp->nfsc_flags & 388 NFSCLFLAGS_FIRSTDELEG)) 389 op->nfso_own->nfsow_clp->nfsc_flags |= 390 (NFSCLFLAGS_FIRSTDELEG | NFSCLFLAGS_GOTDELEG); 391 MALLOC(ndp, struct nfscldeleg *, 392 sizeof (struct nfscldeleg) + newfhlen, 393 M_NFSCLDELEG, M_WAITOK); 394 LIST_INIT(&ndp->nfsdl_owner); 395 LIST_INIT(&ndp->nfsdl_lock); 396 ndp->nfsdl_clp = op->nfso_own->nfsow_clp; 397 ndp->nfsdl_fhlen = newfhlen; 398 NFSBCOPY(newfhp, ndp->nfsdl_fh, newfhlen); 399 newnfs_copyincred(cred, &ndp->nfsdl_cred); 400 nfscl_lockinit(&ndp->nfsdl_rwlock); 401 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID + 402 NFSX_UNSIGNED); 403 ndp->nfsdl_stateid.seqid = *tl++; 404 ndp->nfsdl_stateid.other[0] = *tl++; 405 ndp->nfsdl_stateid.other[1] = *tl++; 406 ndp->nfsdl_stateid.other[2] = *tl++; 407 ret = fxdr_unsigned(int, *tl); 408 if (deleg == NFSV4OPEN_DELEGATEWRITE) { 409 ndp->nfsdl_flags = NFSCLDL_WRITE; 410 /* 411 * Indicates how much the file can grow. 412 */ 413 NFSM_DISSECT(tl, u_int32_t *, 414 3 * NFSX_UNSIGNED); 415 limitby = fxdr_unsigned(int, *tl++); 416 switch (limitby) { 417 case NFSV4OPEN_LIMITSIZE: 418 ndp->nfsdl_sizelimit = fxdr_hyper(tl); 419 break; 420 case NFSV4OPEN_LIMITBLOCKS: 421 ndp->nfsdl_sizelimit = 422 fxdr_unsigned(u_int64_t, *tl++); 423 ndp->nfsdl_sizelimit *= 424 fxdr_unsigned(u_int64_t, *tl); 425 break; 426 default: 427 error = NFSERR_BADXDR; 428 goto nfsmout; 429 }; 430 } else { 431 ndp->nfsdl_flags = NFSCLDL_READ; 432 } 433 if (ret) 434 ndp->nfsdl_flags |= NFSCLDL_RECALL; 435 error = nfsrv_dissectace(nd, &ndp->nfsdl_ace, &ret, 436 &acesize, p); 437 if (error) 438 goto nfsmout; 439 } else if (deleg != NFSV4OPEN_DELEGATENONE) { 440 error = NFSERR_BADXDR; 441 goto nfsmout; 442 } 443 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 444 error = nfsv4_loadattr(nd, NULL, &nfsva, NULL, 445 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0, 446 NULL, NULL, NULL, p, cred); 447 if (error) 448 goto nfsmout; 449 if (ndp != NULL) { 450 ndp->nfsdl_change = nfsva.na_filerev; 451 ndp->nfsdl_modtime = nfsva.na_mtime; 452 ndp->nfsdl_flags |= NFSCLDL_MODTIMESET; 453 } 454 if (!reclaim && (rflags & NFSV4OPEN_RESULTCONFIRM)) { 455 do { 456 ret = nfsrpc_openconfirm(vp, newfhp, newfhlen, op, 457 cred, p); 458 if (ret == NFSERR_DELAY) 459 (void) nfs_catnap(PZERO, "nfs_open"); 460 } while (ret == NFSERR_DELAY); 461 error = ret; 462 } 463 if ((rflags & NFSV4OPEN_LOCKTYPEPOSIX) || 464 nfscl_assumeposixlocks) 465 op->nfso_posixlock = 1; 466 else 467 op->nfso_posixlock = 0; 468 469 /* 470 * If the server is handing out delegations, but we didn't 471 * get one because an OpenConfirm was required, try the 472 * Open again, to get a delegation. This is a harmless no-op, 473 * from a server's point of view. 474 */ 475 if (!reclaim && (rflags & NFSV4OPEN_RESULTCONFIRM) && 476 (op->nfso_own->nfsow_clp->nfsc_flags & NFSCLFLAGS_GOTDELEG) 477 && !error && dp == NULL && ndp == NULL && !recursed) { 478 do { 479 ret = nfsrpc_openrpc(nmp, vp, nfhp, fhlen, newfhp, 480 newfhlen, mode, op, name, namelen, &ndp, 0, 0x0, 481 cred, p, syscred, 1); 482 if (ret == NFSERR_DELAY) 483 (void) nfs_catnap(PZERO, "nfs_open2"); 484 } while (ret == NFSERR_DELAY); 485 if (ret) { 486 if (ndp != NULL) 487 FREE((caddr_t)ndp, M_NFSCLDELEG); 488 if (ret == NFSERR_STALECLIENTID || 489 ret == NFSERR_STALEDONTRECOVER) 490 error = ret; 491 } 492 } 493 } 494 if (nd->nd_repstat != 0 && error == 0) 495 error = nd->nd_repstat; 496 if (error == NFSERR_STALECLIENTID) 497 nfscl_initiate_recovery(op->nfso_own->nfsow_clp); 498nfsmout: 499 if (!error) 500 *dpp = ndp; 501 else if (ndp != NULL) 502 FREE((caddr_t)ndp, M_NFSCLDELEG); 503 mbuf_freem(nd->nd_mrep); 504 return (error); 505} 506 507/* 508 * open downgrade rpc 509 */ 510APPLESTATIC int 511nfsrpc_opendowngrade(vnode_t vp, u_int32_t mode, struct nfsclopen *op, 512 struct ucred *cred, NFSPROC_T *p) 513{ 514 u_int32_t *tl; 515 struct nfsrv_descript nfsd, *nd = &nfsd; 516 int error; 517 518 NFSCL_REQSTART(nd, NFSPROC_OPENDOWNGRADE, vp); 519 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID + 3 * NFSX_UNSIGNED); 520 *tl++ = op->nfso_stateid.seqid; 521 *tl++ = op->nfso_stateid.other[0]; 522 *tl++ = op->nfso_stateid.other[1]; 523 *tl++ = op->nfso_stateid.other[2]; 524 *tl++ = txdr_unsigned(op->nfso_own->nfsow_seqid); 525 *tl++ = txdr_unsigned(mode & NFSV4OPEN_ACCESSBOTH); 526 *tl = txdr_unsigned((mode >> NFSLCK_SHIFT) & NFSV4OPEN_DENYBOTH); 527 error = nfscl_request(nd, vp, p, cred, NULL); 528 if (error) 529 return (error); 530 NFSCL_INCRSEQID(op->nfso_own->nfsow_seqid, nd); 531 if (!nd->nd_repstat) { 532 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID); 533 op->nfso_stateid.seqid = *tl++; 534 op->nfso_stateid.other[0] = *tl++; 535 op->nfso_stateid.other[1] = *tl++; 536 op->nfso_stateid.other[2] = *tl; 537 } 538 if (nd->nd_repstat && error == 0) 539 error = nd->nd_repstat; 540 if (error == NFSERR_STALESTATEID) 541 nfscl_initiate_recovery(op->nfso_own->nfsow_clp); 542nfsmout: 543 mbuf_freem(nd->nd_mrep); 544 return (error); 545} 546 547/* 548 * V4 Close operation. 549 */ 550APPLESTATIC int 551nfsrpc_close(vnode_t vp, int doclose, NFSPROC_T *p) 552{ 553 struct nfsclclient *clp; 554 int error; 555 556 if (vnode_vtype(vp) != VREG) 557 return (0); 558 if (doclose) 559 error = nfscl_doclose(vp, &clp, p); 560 else 561 error = nfscl_getclose(vp, &clp); 562 if (error) 563 return (error); 564 565 nfscl_clientrelease(clp); 566 return (0); 567} 568 569/* 570 * Close the open. 571 */ 572APPLESTATIC void 573nfsrpc_doclose(struct nfsmount *nmp, struct nfsclopen *op, NFSPROC_T *p) 574{ 575 struct nfsrv_descript nfsd, *nd = &nfsd; 576 struct nfscllockowner *lp; 577 struct nfscllock *lop, *nlop; 578 struct ucred *tcred; 579 u_int64_t off = 0, len = 0; 580 u_int32_t type = NFSV4LOCKT_READ; 581 int error, do_unlock, trycnt; 582 583 tcred = newnfs_getcred(); 584 newnfs_copycred(&op->nfso_cred, tcred); 585 /* 586 * (Theoretically this could be done in the same 587 * compound as the close, but having multiple 588 * sequenced Ops in the same compound might be 589 * too scary for some servers.) 590 */ 591 if (op->nfso_posixlock) { 592 off = 0; 593 len = NFS64BITSSET; 594 type = NFSV4LOCKT_READ; 595 } 596 597 /* 598 * Since this function is only called from VOP_INACTIVE(), no 599 * other thread will be manipulating this Open. As such, the 600 * lock lists are not being changed by other threads, so it should 601 * be safe to do this without locking. 602 */ 603 LIST_FOREACH(lp, &op->nfso_lock, nfsl_list) { 604 do_unlock = 1; 605 LIST_FOREACH_SAFE(lop, &lp->nfsl_lock, nfslo_list, nlop) { 606 if (op->nfso_posixlock == 0) { 607 off = lop->nfslo_first; 608 len = lop->nfslo_end - lop->nfslo_first; 609 if (lop->nfslo_type == F_WRLCK) 610 type = NFSV4LOCKT_WRITE; 611 else 612 type = NFSV4LOCKT_READ; 613 } 614 if (do_unlock) { 615 trycnt = 0; 616 do { 617 error = nfsrpc_locku(nd, nmp, lp, off, 618 len, type, tcred, p, 0); 619 if ((nd->nd_repstat == NFSERR_GRACE || 620 nd->nd_repstat == NFSERR_DELAY) && 621 error == 0) 622 (void) nfs_catnap(PZERO, 623 "nfs_close"); 624 } while ((nd->nd_repstat == NFSERR_GRACE || 625 nd->nd_repstat == NFSERR_DELAY) && 626 error == 0 && trycnt++ < 5); 627 if (op->nfso_posixlock) 628 do_unlock = 0; 629 } 630 nfscl_freelock(lop, 0); 631 } 632 } 633 634 /* 635 * There could be other Opens for different files on the same 636 * OpenOwner, so locking is required. 637 */ 638 NFSLOCKCLSTATE(); 639 nfscl_lockexcl(&op->nfso_own->nfsow_rwlock, NFSCLSTATEMUTEXPTR); 640 NFSUNLOCKCLSTATE(); 641 do { 642 error = nfscl_tryclose(op, tcred, nmp, p); 643 if (error == NFSERR_GRACE) 644 (void) nfs_catnap(PZERO, "nfs_close"); 645 } while (error == NFSERR_GRACE); 646 NFSLOCKCLSTATE(); 647 nfscl_lockunlock(&op->nfso_own->nfsow_rwlock); 648 649 /* 650 * Move the lockowner to nfsc_defunctlockowner, 651 * so the Renew thread will do the ReleaseLockOwner 652 * Op on it later. There might still be other 653 * opens using the same lockowner name. 654 */ 655 lp = LIST_FIRST(&op->nfso_lock); 656 if (lp != NULL) { 657 while (LIST_NEXT(lp, nfsl_list) != NULL) 658 lp = LIST_NEXT(lp, nfsl_list); 659 LIST_PREPEND(&nmp->nm_clp->nfsc_defunctlockowner, 660 &op->nfso_lock, lp, nfsl_list); 661 LIST_INIT(&op->nfso_lock); 662 } 663 nfscl_freeopen(op, 0); 664 NFSUNLOCKCLSTATE(); 665 NFSFREECRED(tcred); 666} 667 668/* 669 * The actual Close RPC. 670 */ 671APPLESTATIC int 672nfsrpc_closerpc(struct nfsrv_descript *nd, struct nfsmount *nmp, 673 struct nfsclopen *op, struct ucred *cred, NFSPROC_T *p, 674 int syscred) 675{ 676 u_int32_t *tl; 677 int error; 678 679 nfscl_reqstart(nd, NFSPROC_CLOSE, nmp, op->nfso_fh, 680 op->nfso_fhlen, NULL); 681 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED + NFSX_STATEID); 682 *tl++ = txdr_unsigned(op->nfso_own->nfsow_seqid); 683 *tl++ = op->nfso_stateid.seqid; 684 *tl++ = op->nfso_stateid.other[0]; 685 *tl++ = op->nfso_stateid.other[1]; 686 *tl = op->nfso_stateid.other[2]; 687 if (syscred) 688 nd->nd_flag |= ND_USEGSSNAME; 689 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 690 NFS_PROG, NFS_VER4, NULL, 1, NULL); 691 if (error) 692 return (error); 693 NFSCL_INCRSEQID(op->nfso_own->nfsow_seqid, nd); 694 if (nd->nd_repstat == 0) 695 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID); 696 error = nd->nd_repstat; 697 if (error == NFSERR_STALESTATEID) 698 nfscl_initiate_recovery(op->nfso_own->nfsow_clp); 699nfsmout: 700 mbuf_freem(nd->nd_mrep); 701 return (error); 702} 703 704/* 705 * V4 Open Confirm RPC. 706 */ 707APPLESTATIC int 708nfsrpc_openconfirm(vnode_t vp, u_int8_t *nfhp, int fhlen, 709 struct nfsclopen *op, struct ucred *cred, NFSPROC_T *p) 710{ 711 u_int32_t *tl; 712 struct nfsrv_descript nfsd, *nd = &nfsd; 713 int error; 714 715 nfscl_reqstart(nd, NFSPROC_OPENCONFIRM, VFSTONFS(vnode_mount(vp)), 716 nfhp, fhlen, NULL); 717 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED + NFSX_STATEID); 718 *tl++ = op->nfso_stateid.seqid; 719 *tl++ = op->nfso_stateid.other[0]; 720 *tl++ = op->nfso_stateid.other[1]; 721 *tl++ = op->nfso_stateid.other[2]; 722 *tl = txdr_unsigned(op->nfso_own->nfsow_seqid); 723 error = nfscl_request(nd, vp, p, cred, NULL); 724 if (error) 725 return (error); 726 NFSCL_INCRSEQID(op->nfso_own->nfsow_seqid, nd); 727 if (!nd->nd_repstat) { 728 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID); 729 op->nfso_stateid.seqid = *tl++; 730 op->nfso_stateid.other[0] = *tl++; 731 op->nfso_stateid.other[1] = *tl++; 732 op->nfso_stateid.other[2] = *tl; 733 } 734 error = nd->nd_repstat; 735 if (error == NFSERR_STALESTATEID) 736 nfscl_initiate_recovery(op->nfso_own->nfsow_clp); 737nfsmout: 738 mbuf_freem(nd->nd_mrep); 739 return (error); 740} 741 742/* 743 * Do the setclientid and setclientid confirm RPCs. Called from nfs_statfs() 744 * when a mount has just occurred and when the server replies NFSERR_EXPIRED. 745 */ 746APPLESTATIC int 747nfsrpc_setclient(struct nfsmount *nmp, struct nfsclclient *clp, 748 struct ucred *cred, NFSPROC_T *p) 749{ 750 u_int32_t *tl; 751 struct nfsrv_descript nfsd; 752 struct nfsrv_descript *nd = &nfsd; 753 nfsattrbit_t attrbits; 754 u_int8_t *cp = NULL, *cp2, addr[INET6_ADDRSTRLEN + 9]; 755 u_short port; 756 int error, isinet6, callblen; 757 nfsquad_t confirm; 758 u_int32_t lease; 759 static u_int32_t rev = 0; 760 761 if (nfsboottime.tv_sec == 0) 762 NFSSETBOOTTIME(nfsboottime); 763 nfscl_reqstart(nd, NFSPROC_SETCLIENTID, nmp, NULL, 0, NULL); 764 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 765 *tl++ = txdr_unsigned(nfsboottime.tv_sec); 766 *tl = txdr_unsigned(rev++); 767 (void) nfsm_strtom(nd, clp->nfsc_id, clp->nfsc_idlen); 768 769 /* 770 * set up the callback address 771 */ 772 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 773 *tl = txdr_unsigned(NFS_CALLBCKPROG); 774 callblen = strlen(nfsv4_callbackaddr); 775 if (callblen == 0) 776 cp = nfscl_getmyip(nmp, &isinet6); 777 if (nfscl_enablecallb && nfs_numnfscbd > 0 && 778 (callblen > 0 || cp != NULL)) { 779 port = htons(nfsv4_cbport); 780 cp2 = (u_int8_t *)&port; 781#ifdef INET6 782 if ((callblen > 0 && 783 strchr(nfsv4_callbackaddr, ':')) || isinet6) { 784 char ip6buf[INET6_ADDRSTRLEN], *ip6add; 785 786 (void) nfsm_strtom(nd, "tcp6", 4); 787 if (callblen == 0) { 788 ip6_sprintf(ip6buf, (struct in6_addr *)cp); 789 ip6add = ip6buf; 790 } else { 791 ip6add = nfsv4_callbackaddr; 792 } 793 snprintf(addr, INET6_ADDRSTRLEN + 9, "%s.%d.%d", 794 ip6add, cp2[0], cp2[1]); 795 } else 796#endif 797 { 798 (void) nfsm_strtom(nd, "tcp", 3); 799 if (callblen == 0) 800 snprintf(addr, INET6_ADDRSTRLEN + 9, 801 "%d.%d.%d.%d.%d.%d", cp[0], cp[1], 802 cp[2], cp[3], cp2[0], cp2[1]); 803 else 804 snprintf(addr, INET6_ADDRSTRLEN + 9, 805 "%s.%d.%d", nfsv4_callbackaddr, 806 cp2[0], cp2[1]); 807 } 808 (void) nfsm_strtom(nd, addr, strlen(addr)); 809 } else { 810 (void) nfsm_strtom(nd, "tcp", 3); 811 (void) nfsm_strtom(nd, "0.0.0.0.0.0", 11); 812 } 813 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 814 *tl = txdr_unsigned(clp->nfsc_cbident); 815 nd->nd_flag |= ND_USEGSSNAME; 816 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 817 NFS_PROG, NFS_VER4, NULL, 1, NULL); 818 if (error) 819 return (error); 820 if (nd->nd_repstat == 0) { 821 NFSM_DISSECT(tl, u_int32_t *, 4 * NFSX_UNSIGNED); 822 clp->nfsc_clientid.lval[0] = *tl++; 823 clp->nfsc_clientid.lval[1] = *tl++; 824 confirm.lval[0] = *tl++; 825 confirm.lval[1] = *tl; 826 mbuf_freem(nd->nd_mrep); 827 nd->nd_mrep = NULL; 828 829 /* 830 * and confirm it. 831 */ 832 nfscl_reqstart(nd, NFSPROC_SETCLIENTIDCFRM, nmp, NULL, 0, NULL); 833 NFSM_BUILD(tl, u_int32_t *, 4 * NFSX_UNSIGNED); 834 *tl++ = clp->nfsc_clientid.lval[0]; 835 *tl++ = clp->nfsc_clientid.lval[1]; 836 *tl++ = confirm.lval[0]; 837 *tl = confirm.lval[1]; 838 nd->nd_flag |= ND_USEGSSNAME; 839 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, 840 cred, NFS_PROG, NFS_VER4, NULL, 1, NULL); 841 if (error) 842 return (error); 843 mbuf_freem(nd->nd_mrep); 844 nd->nd_mrep = NULL; 845 if (nd->nd_repstat == 0) { 846 nfscl_reqstart(nd, NFSPROC_GETATTR, nmp, nmp->nm_fh, 847 nmp->nm_fhsize, NULL); 848 NFSZERO_ATTRBIT(&attrbits); 849 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_LEASETIME); 850 (void) nfsrv_putattrbit(nd, &attrbits); 851 nd->nd_flag |= ND_USEGSSNAME; 852 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, 853 cred, NFS_PROG, NFS_VER4, NULL, 1, NULL); 854 if (error) 855 return (error); 856 if (nd->nd_repstat == 0) { 857 error = nfsv4_loadattr(nd, NULL, NULL, NULL, NULL, 0, NULL, 858 NULL, NULL, NULL, NULL, 0, NULL, &lease, NULL, p, cred); 859 if (error) 860 goto nfsmout; 861 clp->nfsc_renew = NFSCL_RENEW(lease); 862 clp->nfsc_expire = NFSD_MONOSEC + clp->nfsc_renew; 863 clp->nfsc_clientidrev++; 864 if (clp->nfsc_clientidrev == 0) 865 clp->nfsc_clientidrev++; 866 } 867 } 868 } 869 error = nd->nd_repstat; 870nfsmout: 871 mbuf_freem(nd->nd_mrep); 872 return (error); 873} 874 875/* 876 * nfs getattr call. 877 */ 878APPLESTATIC int 879nfsrpc_getattr(vnode_t vp, struct ucred *cred, NFSPROC_T *p, 880 struct nfsvattr *nap, void *stuff) 881{ 882 struct nfsrv_descript nfsd, *nd = &nfsd; 883 int error; 884 nfsattrbit_t attrbits; 885 886 NFSCL_REQSTART(nd, NFSPROC_GETATTR, vp); 887 if (nd->nd_flag & ND_NFSV4) { 888 NFSGETATTR_ATTRBIT(&attrbits); 889 (void) nfsrv_putattrbit(nd, &attrbits); 890 } 891 error = nfscl_request(nd, vp, p, cred, stuff); 892 if (error) 893 return (error); 894 if (!nd->nd_repstat) 895 error = nfsm_loadattr(nd, nap); 896 else 897 error = nd->nd_repstat; 898 mbuf_freem(nd->nd_mrep); 899 return (error); 900} 901 902/* 903 * nfs getattr call with non-vnode arguemnts. 904 */ 905APPLESTATIC int 906nfsrpc_getattrnovp(struct nfsmount *nmp, u_int8_t *fhp, int fhlen, int syscred, 907 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, u_int64_t *xidp) 908{ 909 struct nfsrv_descript nfsd, *nd = &nfsd; 910 int error, vers = NFS_VER2; 911 nfsattrbit_t attrbits; 912 913 nfscl_reqstart(nd, NFSPROC_GETATTR, nmp, fhp, fhlen, NULL); 914 if (nd->nd_flag & ND_NFSV4) { 915 vers = NFS_VER4; 916 NFSGETATTR_ATTRBIT(&attrbits); 917 (void) nfsrv_putattrbit(nd, &attrbits); 918 } else if (nd->nd_flag & ND_NFSV3) { 919 vers = NFS_VER3; 920 } 921 if (syscred) 922 nd->nd_flag |= ND_USEGSSNAME; 923 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 924 NFS_PROG, vers, NULL, 1, xidp); 925 if (error) 926 return (error); 927 if (!nd->nd_repstat) 928 error = nfsm_loadattr(nd, nap); 929 else 930 error = nd->nd_repstat; 931 mbuf_freem(nd->nd_mrep); 932 return (error); 933} 934 935/* 936 * Do an nfs setattr operation. 937 */ 938APPLESTATIC int 939nfsrpc_setattr(vnode_t vp, struct vattr *vap, NFSACL_T *aclp, 940 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *rnap, int *attrflagp, 941 void *stuff) 942{ 943 int error, expireret = 0, openerr, retrycnt; 944 u_int32_t clidrev = 0, mode; 945 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 946 struct nfsfh *nfhp; 947 nfsv4stateid_t stateid; 948 void *lckp; 949 950 if (nmp->nm_clp != NULL) 951 clidrev = nmp->nm_clp->nfsc_clientidrev; 952 if (vap != NULL && NFSATTRISSET(u_quad_t, vap, va_size)) 953 mode = NFSV4OPEN_ACCESSWRITE; 954 else 955 mode = NFSV4OPEN_ACCESSREAD; 956 retrycnt = 0; 957 do { 958 lckp = NULL; 959 openerr = 1; 960 if (NFSHASNFSV4(nmp)) { 961 nfhp = VTONFS(vp)->n_fhp; 962 error = nfscl_getstateid(vp, nfhp->nfh_fh, 963 nfhp->nfh_len, mode, cred, p, &stateid, &lckp); 964 if (error && vnode_vtype(vp) == VREG && 965 (mode == NFSV4OPEN_ACCESSWRITE || 966 nfstest_openallsetattr)) { 967 /* 968 * No Open stateid, so try and open the file 969 * now. 970 */ 971 if (mode == NFSV4OPEN_ACCESSWRITE) 972 openerr = nfsrpc_open(vp, FWRITE, cred, 973 p); 974 else 975 openerr = nfsrpc_open(vp, FREAD, cred, 976 p); 977 if (!openerr) 978 (void) nfscl_getstateid(vp, 979 nfhp->nfh_fh, nfhp->nfh_len, 980 mode, cred, p, &stateid, &lckp); 981 } 982 } 983 if (vap != NULL) 984 error = nfsrpc_setattrrpc(vp, vap, &stateid, cred, p, 985 rnap, attrflagp, stuff); 986#ifdef NFS4_ACL_EXTATTR_NAME 987 else 988 error = nfsrpc_setaclrpc(vp, cred, p, aclp, &stateid, 989 stuff); 990#else 991 else 992 error = EOPNOTSUPP; 993#endif 994 if (error == NFSERR_STALESTATEID) 995 nfscl_initiate_recovery(nmp->nm_clp); 996 if (lckp != NULL) 997 nfscl_lockderef(lckp); 998 if (!openerr) 999 (void) nfsrpc_close(vp, 0, p); 1000 if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 1001 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 1002 error == NFSERR_OLDSTATEID) { 1003 (void) nfs_catnap(PZERO, "nfs_setattr"); 1004 } else if ((error == NFSERR_EXPIRED || 1005 error == NFSERR_BADSTATEID) && clidrev != 0) { 1006 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p); 1007 } 1008 retrycnt++; 1009 } while (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 1010 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 1011 (error == NFSERR_OLDSTATEID && retrycnt < 20) || 1012 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) && 1013 expireret == 0 && clidrev != 0 && retrycnt < 4)); 1014 if (error && retrycnt >= 4) 1015 error = EIO; 1016 return (error); 1017} 1018 1019static int 1020nfsrpc_setattrrpc(vnode_t vp, struct vattr *vap, 1021 nfsv4stateid_t *stateidp, struct ucred *cred, NFSPROC_T *p, 1022 struct nfsvattr *rnap, int *attrflagp, void *stuff) 1023{ 1024 u_int32_t *tl; 1025 struct nfsrv_descript nfsd, *nd = &nfsd; 1026 int error; 1027 nfsattrbit_t attrbits; 1028 1029 *attrflagp = 0; 1030 NFSCL_REQSTART(nd, NFSPROC_SETATTR, vp); 1031 if (nd->nd_flag & ND_NFSV4) 1032 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID); 1033 vap->va_type = vnode_vtype(vp); 1034 nfscl_fillsattr(nd, vap, vp, NFSSATTR_FULL, 0); 1035 if (nd->nd_flag & ND_NFSV3) { 1036 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1037 *tl = newnfs_false; 1038 } else if (nd->nd_flag & ND_NFSV4) { 1039 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1040 *tl = txdr_unsigned(NFSV4OP_GETATTR); 1041 NFSGETATTR_ATTRBIT(&attrbits); 1042 (void) nfsrv_putattrbit(nd, &attrbits); 1043 } 1044 error = nfscl_request(nd, vp, p, cred, stuff); 1045 if (error) 1046 return (error); 1047 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) 1048 error = nfscl_wcc_data(nd, vp, rnap, attrflagp, NULL, stuff); 1049 if ((nd->nd_flag & ND_NFSV4) && !error) 1050 error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL); 1051 if (!(nd->nd_flag & ND_NFSV3) && !nd->nd_repstat && !error) 1052 error = nfscl_postop_attr(nd, rnap, attrflagp, stuff); 1053 mbuf_freem(nd->nd_mrep); 1054 if (nd->nd_repstat && !error) 1055 error = nd->nd_repstat; 1056 return (error); 1057} 1058 1059/* 1060 * nfs lookup rpc 1061 */ 1062APPLESTATIC int 1063nfsrpc_lookup(vnode_t dvp, char *name, int len, struct ucred *cred, 1064 NFSPROC_T *p, struct nfsvattr *dnap, struct nfsvattr *nap, 1065 struct nfsfh **nfhpp, int *attrflagp, int *dattrflagp, void *stuff) 1066{ 1067 u_int32_t *tl; 1068 struct nfsrv_descript nfsd, *nd = &nfsd; 1069 struct nfsmount *nmp; 1070 struct nfsnode *np; 1071 struct nfsfh *nfhp; 1072 nfsattrbit_t attrbits; 1073 int error = 0, lookupp = 0; 1074 1075 *attrflagp = 0; 1076 *dattrflagp = 0; 1077 if (vnode_vtype(dvp) != VDIR) 1078 return (ENOTDIR); 1079 nmp = VFSTONFS(vnode_mount(dvp)); 1080 if (len > NFS_MAXNAMLEN) 1081 return (ENAMETOOLONG); 1082 if (NFSHASNFSV4(nmp) && len == 1 && 1083 name[0] == '.') { 1084 /* 1085 * Just return the current dir's fh. 1086 */ 1087 np = VTONFS(dvp); 1088 MALLOC(nfhp, struct nfsfh *, sizeof (struct nfsfh) + 1089 np->n_fhp->nfh_len, M_NFSFH, M_WAITOK); 1090 nfhp->nfh_len = np->n_fhp->nfh_len; 1091 NFSBCOPY(np->n_fhp->nfh_fh, nfhp->nfh_fh, nfhp->nfh_len); 1092 *nfhpp = nfhp; 1093 return (0); 1094 } 1095 if (NFSHASNFSV4(nmp) && len == 2 && 1096 name[0] == '.' && name[1] == '.') { 1097 lookupp = 1; 1098 NFSCL_REQSTART(nd, NFSPROC_LOOKUPP, dvp); 1099 } else { 1100 NFSCL_REQSTART(nd, NFSPROC_LOOKUP, dvp); 1101 (void) nfsm_strtom(nd, name, len); 1102 } 1103 if (nd->nd_flag & ND_NFSV4) { 1104 NFSGETATTR_ATTRBIT(&attrbits); 1105 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1106 *tl++ = txdr_unsigned(NFSV4OP_GETFH); 1107 *tl = txdr_unsigned(NFSV4OP_GETATTR); 1108 (void) nfsrv_putattrbit(nd, &attrbits); 1109 } 1110 error = nfscl_request(nd, dvp, p, cred, stuff); 1111 if (error) 1112 return (error); 1113 if (nd->nd_repstat) { 1114 /* 1115 * When an NFSv4 Lookupp returns ENOENT, it means that 1116 * the lookup is at the root of an fs, so return this dir. 1117 */ 1118 if (nd->nd_repstat == NFSERR_NOENT && lookupp) { 1119 np = VTONFS(dvp); 1120 MALLOC(nfhp, struct nfsfh *, sizeof (struct nfsfh) + 1121 np->n_fhp->nfh_len, M_NFSFH, M_WAITOK); 1122 nfhp->nfh_len = np->n_fhp->nfh_len; 1123 NFSBCOPY(np->n_fhp->nfh_fh, nfhp->nfh_fh, nfhp->nfh_len); 1124 *nfhpp = nfhp; 1125 mbuf_freem(nd->nd_mrep); 1126 return (0); 1127 } 1128 if (nd->nd_flag & ND_NFSV3) 1129 error = nfscl_postop_attr(nd, dnap, dattrflagp, stuff); 1130 goto nfsmout; 1131 } 1132 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == ND_NFSV4) { 1133 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1134 if (*(tl + 1)) { 1135 nd->nd_flag |= ND_NOMOREDATA; 1136 goto nfsmout; 1137 } 1138 } 1139 error = nfsm_getfh(nd, nfhpp); 1140 if (error) 1141 goto nfsmout; 1142 1143 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 1144 if ((nd->nd_flag & ND_NFSV3) && !error) 1145 error = nfscl_postop_attr(nd, dnap, dattrflagp, stuff); 1146nfsmout: 1147 mbuf_freem(nd->nd_mrep); 1148 if (!error && nd->nd_repstat) 1149 error = nd->nd_repstat; 1150 return (error); 1151} 1152 1153/* 1154 * Do a readlink rpc. 1155 */ 1156APPLESTATIC int 1157nfsrpc_readlink(vnode_t vp, struct uio *uiop, struct ucred *cred, 1158 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff) 1159{ 1160 u_int32_t *tl; 1161 struct nfsrv_descript nfsd, *nd = &nfsd; 1162 struct nfsnode *np = VTONFS(vp); 1163 nfsattrbit_t attrbits; 1164 int error, len, cangetattr = 1; 1165 1166 *attrflagp = 0; 1167 NFSCL_REQSTART(nd, NFSPROC_READLINK, vp); 1168 if (nd->nd_flag & ND_NFSV4) { 1169 /* 1170 * And do a Getattr op. 1171 */ 1172 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1173 *tl = txdr_unsigned(NFSV4OP_GETATTR); 1174 NFSGETATTR_ATTRBIT(&attrbits); 1175 (void) nfsrv_putattrbit(nd, &attrbits); 1176 } 1177 error = nfscl_request(nd, vp, p, cred, stuff); 1178 if (error) 1179 return (error); 1180 if (nd->nd_flag & ND_NFSV3) 1181 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 1182 if (!nd->nd_repstat && !error) { 1183 NFSM_STRSIZ(len, NFS_MAXPATHLEN); 1184 /* 1185 * This seems weird to me, but must have been added to 1186 * FreeBSD for some reason. The only thing I can think of 1187 * is that there was/is some server that replies with 1188 * more link data than it should? 1189 */ 1190 if (len == NFS_MAXPATHLEN) { 1191 NFSLOCKNODE(np); 1192 if (np->n_size > 0 && np->n_size < NFS_MAXPATHLEN) { 1193 len = np->n_size; 1194 cangetattr = 0; 1195 } 1196 NFSUNLOCKNODE(np); 1197 } 1198 error = nfsm_mbufuio(nd, uiop, len); 1199 if ((nd->nd_flag & ND_NFSV4) && !error && cangetattr) 1200 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 1201 } 1202 if (nd->nd_repstat && !error) 1203 error = nd->nd_repstat; 1204nfsmout: 1205 mbuf_freem(nd->nd_mrep); 1206 return (error); 1207} 1208 1209/* 1210 * Read operation. 1211 */ 1212APPLESTATIC int 1213nfsrpc_read(vnode_t vp, struct uio *uiop, struct ucred *cred, 1214 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff) 1215{ 1216 int error, expireret = 0, retrycnt; 1217 u_int32_t clidrev = 0; 1218 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 1219 struct nfsnode *np = VTONFS(vp); 1220 struct ucred *newcred; 1221 struct nfsfh *nfhp = NULL; 1222 nfsv4stateid_t stateid; 1223 void *lckp; 1224 1225 if (nmp->nm_clp != NULL) 1226 clidrev = nmp->nm_clp->nfsc_clientidrev; 1227 newcred = cred; 1228 if (NFSHASNFSV4(nmp)) { 1229 nfhp = np->n_fhp; 1230 if (p == NULL) 1231 newcred = NFSNEWCRED(cred); 1232 } 1233 retrycnt = 0; 1234 do { 1235 lckp = NULL; 1236 if (NFSHASNFSV4(nmp)) 1237 (void)nfscl_getstateid(vp, nfhp->nfh_fh, nfhp->nfh_len, 1238 NFSV4OPEN_ACCESSREAD, newcred, p, &stateid, &lckp); 1239 error = nfsrpc_readrpc(vp, uiop, newcred, &stateid, p, nap, 1240 attrflagp, stuff); 1241 if (error == NFSERR_STALESTATEID) 1242 nfscl_initiate_recovery(nmp->nm_clp); 1243 if (lckp != NULL) 1244 nfscl_lockderef(lckp); 1245 if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 1246 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 1247 error == NFSERR_OLDSTATEID) { 1248 (void) nfs_catnap(PZERO, "nfs_read"); 1249 } else if ((error == NFSERR_EXPIRED || 1250 error == NFSERR_BADSTATEID) && clidrev != 0) { 1251 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p); 1252 } 1253 retrycnt++; 1254 } while (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 1255 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 1256 (error == NFSERR_OLDSTATEID && retrycnt < 20) || 1257 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) && 1258 expireret == 0 && clidrev != 0 && retrycnt < 4)); 1259 if (error && retrycnt >= 4) 1260 error = EIO; 1261 if (NFSHASNFSV4(nmp) && p == NULL) 1262 NFSFREECRED(newcred); 1263 return (error); 1264} 1265 1266/* 1267 * The actual read RPC. 1268 */ 1269static int 1270nfsrpc_readrpc(vnode_t vp, struct uio *uiop, struct ucred *cred, 1271 nfsv4stateid_t *stateidp, NFSPROC_T *p, struct nfsvattr *nap, 1272 int *attrflagp, void *stuff) 1273{ 1274 u_int32_t *tl; 1275 int error = 0, len, retlen, tsiz, eof = 0; 1276 struct nfsrv_descript nfsd; 1277 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 1278 struct nfsrv_descript *nd = &nfsd; 1279 1280 *attrflagp = 0; 1281 tsiz = uio_uio_resid(uiop); 1282 if (uiop->uio_offset + tsiz > 0xffffffff && 1283 !NFSHASNFSV3OR4(nmp)) 1284 return (EFBIG); 1285 nd->nd_mrep = NULL; 1286 while (tsiz > 0) { 1287 *attrflagp = 0; 1288 len = (tsiz > nmp->nm_rsize) ? nmp->nm_rsize : tsiz; 1289 NFSCL_REQSTART(nd, NFSPROC_READ, vp); 1290 if (nd->nd_flag & ND_NFSV4) 1291 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID); 1292 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED * 3); 1293 if (nd->nd_flag & ND_NFSV2) { 1294 *tl++ = txdr_unsigned(uiop->uio_offset); 1295 *tl++ = txdr_unsigned(len); 1296 *tl = 0; 1297 } else { 1298 txdr_hyper(uiop->uio_offset, tl); 1299 *(tl + 2) = txdr_unsigned(len); 1300 } 1301 /* 1302 * Since I can't do a Getattr for NFSv4 for Write, there 1303 * doesn't seem any point in doing one here, either. 1304 * (See the comment in nfsrpc_writerpc() for more info.) 1305 */ 1306 error = nfscl_request(nd, vp, p, cred, stuff); 1307 if (error) 1308 return (error); 1309 if (nd->nd_flag & ND_NFSV3) { 1310 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 1311 } else if (!nd->nd_repstat && (nd->nd_flag & ND_NFSV2)) { 1312 error = nfsm_loadattr(nd, nap); 1313 if (!error) 1314 *attrflagp = 1; 1315 } 1316 if (nd->nd_repstat || error) { 1317 if (!error) 1318 error = nd->nd_repstat; 1319 goto nfsmout; 1320 } 1321 if (nd->nd_flag & ND_NFSV3) { 1322 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1323 eof = fxdr_unsigned(int, *(tl + 1)); 1324 } else if (nd->nd_flag & ND_NFSV4) { 1325 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 1326 eof = fxdr_unsigned(int, *tl); 1327 } 1328 NFSM_STRSIZ(retlen, nmp->nm_rsize); 1329 error = nfsm_mbufuio(nd, uiop, retlen); 1330 if (error) 1331 goto nfsmout; 1332 mbuf_freem(nd->nd_mrep); 1333 nd->nd_mrep = NULL; 1334 tsiz -= retlen; 1335 if (!(nd->nd_flag & ND_NFSV2)) { 1336 if (eof || retlen == 0) 1337 tsiz = 0; 1338 } else if (retlen < len) 1339 tsiz = 0; 1340 } 1341 return (0); 1342nfsmout: 1343 if (nd->nd_mrep != NULL) 1344 mbuf_freem(nd->nd_mrep); 1345 return (error); 1346} 1347 1348/* 1349 * nfs write operation 1350 */ 1351APPLESTATIC int 1352nfsrpc_write(vnode_t vp, struct uio *uiop, int *iomode, u_char *verfp, 1353 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, 1354 void *stuff) 1355{ 1356 int error, expireret = 0, retrycnt, nostateid; 1357 u_int32_t clidrev = 0; 1358 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 1359 struct nfsnode *np = VTONFS(vp); 1360 struct ucred *newcred; 1361 struct nfsfh *nfhp = NULL; 1362 nfsv4stateid_t stateid; 1363 void *lckp; 1364 1365 if (nmp->nm_clp != NULL) 1366 clidrev = nmp->nm_clp->nfsc_clientidrev; 1367 newcred = cred; 1368 if (NFSHASNFSV4(nmp)) { 1369 if (p == NULL) 1370 newcred = NFSNEWCRED(cred); 1371 nfhp = np->n_fhp; 1372 } 1373 retrycnt = 0; 1374 do { 1375 lckp = NULL; 1376 nostateid = 0; 1377 if (NFSHASNFSV4(nmp)) { 1378 (void)nfscl_getstateid(vp, nfhp->nfh_fh, nfhp->nfh_len, 1379 NFSV4OPEN_ACCESSWRITE, newcred, p, &stateid, &lckp); 1380 if (stateid.other[0] == 0 && stateid.other[1] == 0 && 1381 stateid.other[2] == 0) { 1382 nostateid = 1; 1383 printf("stateid0 in write\n"); 1384 } 1385 } 1386 1387 /* 1388 * If there is no stateid for NFSv4, it means this is an 1389 * extraneous write after close. Basically a poorly 1390 * implemented buffer cache. Just don't do the write. 1391 */ 1392 if (nostateid) 1393 error = 0; 1394 else 1395 error = nfsrpc_writerpc(vp, uiop, iomode, verfp, 1396 newcred, &stateid, p, nap, attrflagp, stuff); 1397if (error == NFSERR_BADSTATEID) { 1398printf("st=0x%x 0x%x 0x%x\n",stateid.other[0],stateid.other[1],stateid.other[2]); 1399nfscl_dumpstate(nmp, 1, 1, 0, 0); 1400} 1401 if (error == NFSERR_STALESTATEID) 1402 nfscl_initiate_recovery(nmp->nm_clp); 1403 if (lckp != NULL) 1404 nfscl_lockderef(lckp); 1405 if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 1406 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 1407 error == NFSERR_OLDSTATEID) { 1408 (void) nfs_catnap(PZERO, "nfs_write"); 1409 } else if ((error == NFSERR_EXPIRED || 1410 error == NFSERR_BADSTATEID) && clidrev != 0) { 1411 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p); 1412 } 1413 retrycnt++; 1414 } while (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 1415 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 1416 (error == NFSERR_OLDSTATEID && retrycnt < 20) || 1417 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) && 1418 expireret == 0 && clidrev != 0 && retrycnt < 4)); 1419 if (error && retrycnt >= 4) 1420 error = EIO; 1421 if (NFSHASNFSV4(nmp) && p == NULL) 1422 NFSFREECRED(newcred); 1423 return (error); 1424} 1425 1426/* 1427 * The actual write RPC. 1428 */ 1429static int 1430nfsrpc_writerpc(vnode_t vp, struct uio *uiop, int *iomode, 1431 u_char *verfp, struct ucred *cred, nfsv4stateid_t *stateidp, 1432 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff) 1433{ 1434 u_int32_t *tl; 1435 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 1436 struct nfsnode *np = VTONFS(vp); 1437 int error = 0, len, tsiz, rlen, commit, committed = NFSWRITE_FILESYNC; 1438 int wccflag = 0, wsize; 1439 int32_t backup; 1440 struct nfsrv_descript nfsd; 1441 struct nfsrv_descript *nd = &nfsd; 1442 nfsattrbit_t attrbits; 1443 1444#ifdef DIAGNOSTIC 1445 if (uiop->uio_iovcnt != 1) 1446 panic("nfs: writerpc iovcnt > 1"); 1447#endif 1448 *attrflagp = 0; 1449 tsiz = uio_uio_resid(uiop); 1450 NFSLOCKMNT(nmp); 1451 if (uiop->uio_offset + tsiz > 0xffffffff && 1452 !NFSHASNFSV3OR4(nmp)) { 1453 NFSUNLOCKMNT(nmp); 1454 return (EFBIG); 1455 } 1456 wsize = nmp->nm_wsize; 1457 NFSUNLOCKMNT(nmp); 1458 nd->nd_mrep = NULL; /* NFSv2 sometimes does a write with */ 1459 nd->nd_repstat = 0; /* uio_resid == 0, so the while is not done */ 1460 while (tsiz > 0) { 1461 nmp = VFSTONFS(vnode_mount(vp)); 1462 if (nmp == NULL) { 1463 error = ENXIO; 1464 goto nfsmout; 1465 } 1466 *attrflagp = 0; 1467 len = (tsiz > wsize) ? wsize : tsiz; 1468 NFSCL_REQSTART(nd, NFSPROC_WRITE, vp); 1469 if (nd->nd_flag & ND_NFSV4) { 1470 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID); 1471 NFSM_BUILD(tl, u_int32_t *, NFSX_HYPER+2*NFSX_UNSIGNED); 1472 txdr_hyper(uiop->uio_offset, tl); 1473 tl += 2; 1474 *tl++ = txdr_unsigned(*iomode); 1475 *tl = txdr_unsigned(len); 1476 } else if (nd->nd_flag & ND_NFSV3) { 1477 NFSM_BUILD(tl, u_int32_t *, NFSX_HYPER+3*NFSX_UNSIGNED); 1478 txdr_hyper(uiop->uio_offset, tl); 1479 tl += 2; 1480 *tl++ = txdr_unsigned(len); 1481 *tl++ = txdr_unsigned(*iomode); 1482 *tl = txdr_unsigned(len); 1483 } else { 1484 u_int32_t x; 1485 1486 NFSM_BUILD(tl, u_int32_t *, 4 * NFSX_UNSIGNED); 1487 /* 1488 * Not sure why someone changed this, since the 1489 * RFC clearly states that "beginoffset" and 1490 * "totalcount" are ignored, but it wouldn't 1491 * surprise me if there's a busted server out there. 1492 */ 1493 /* Set both "begin" and "current" to non-garbage. */ 1494 x = txdr_unsigned((u_int32_t)uiop->uio_offset); 1495 *tl++ = x; /* "begin offset" */ 1496 *tl++ = x; /* "current offset" */ 1497 x = txdr_unsigned(len); 1498 *tl++ = x; /* total to this offset */ 1499 *tl = x; /* size of this write */ 1500 1501 } 1502 nfsm_uiombuf(nd, uiop, len); 1503 /* 1504 * Although it is tempting to do a normal Getattr Op in the 1505 * NFSv4 compound, the result can be a nearly hung client 1506 * system if the Getattr asks for Owner and/or OwnerGroup. 1507 * It occurs when the client can't map either the Owner or 1508 * Owner_group name in the Getattr reply to a uid/gid. When 1509 * there is a cache miss, the kernel does an upcall to the 1510 * nfsuserd. Then, it can try and read the local /etc/passwd 1511 * or /etc/group file. It can then block in getnewbuf(), 1512 * waiting for dirty writes to be pushed to the NFS server. 1513 * The only reason this doesn't result in a complete 1514 * deadlock, is that the upcall times out and allows 1515 * the write to complete. However, progress is so slow 1516 * that it might just as well be deadlocked. 1517 * So, we just get the attributes that change with each 1518 * write Op. 1519 * nb: nfscl_loadattrcache() needs to be told that these 1520 * partial attributes from a write rpc are being 1521 * passed in, via a argument flag. 1522 */ 1523 if (nd->nd_flag & ND_NFSV4) { 1524 NFSWRITEGETATTR_ATTRBIT(&attrbits); 1525 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1526 *tl = txdr_unsigned(NFSV4OP_GETATTR); 1527 (void) nfsrv_putattrbit(nd, &attrbits); 1528 } 1529 error = nfscl_request(nd, vp, p, cred, stuff); 1530 if (error) 1531 return (error); 1532 if (nd->nd_repstat) { 1533 /* 1534 * In case the rpc gets retried, roll 1535 * the uio fileds changed by nfsm_uiombuf() 1536 * back. 1537 */ 1538 uiop->uio_offset -= len; 1539 uio_uio_resid_add(uiop, len); 1540 uio_iov_base_add(uiop, -len); 1541 uio_iov_len_add(uiop, len); 1542 } 1543 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) { 1544 error = nfscl_wcc_data(nd, vp, nap, attrflagp, 1545 &wccflag, stuff); 1546 if (error) 1547 goto nfsmout; 1548 } 1549 if (!nd->nd_repstat) { 1550 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) { 1551 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED 1552 + NFSX_VERF); 1553 rlen = fxdr_unsigned(int, *tl++); 1554 if (rlen == 0) { 1555 error = NFSERR_IO; 1556 goto nfsmout; 1557 } else if (rlen < len) { 1558 backup = len - rlen; 1559 uio_iov_base_add(uiop, -(backup)); 1560 uio_iov_len_add(uiop, backup); 1561 uiop->uio_offset -= backup; 1562 uio_uio_resid_add(uiop, backup); 1563 len = rlen; 1564 } 1565 commit = fxdr_unsigned(int, *tl++); 1566 1567 /* 1568 * Return the lowest committment level 1569 * obtained by any of the RPCs. 1570 */ 1571 if (committed == NFSWRITE_FILESYNC) 1572 committed = commit; 1573 else if (committed == NFSWRITE_DATASYNC && 1574 commit == NFSWRITE_UNSTABLE) 1575 committed = commit; 1576 if (verfp != NULL) 1577 NFSBCOPY((caddr_t)tl, verfp, NFSX_VERF); 1578 NFSLOCKMNT(nmp); 1579 if (!NFSHASWRITEVERF(nmp)) { 1580 NFSBCOPY((caddr_t)tl, 1581 (caddr_t)&nmp->nm_verf[0], 1582 NFSX_VERF); 1583 NFSSETWRITEVERF(nmp); 1584 } 1585 NFSUNLOCKMNT(nmp); 1586 } 1587 if (nd->nd_flag & ND_NFSV4) 1588 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1589 if (nd->nd_flag & (ND_NFSV2 | ND_NFSV4)) { 1590 error = nfsm_loadattr(nd, nap); 1591 if (!error) 1592 *attrflagp = NFS_LATTR_NOSHRINK; 1593 } 1594 } else { 1595 error = nd->nd_repstat; 1596 } 1597 if (error) 1598 goto nfsmout; 1599 NFSWRITERPC_SETTIME(wccflag, np, (nd->nd_flag & ND_NFSV4)); 1600 mbuf_freem(nd->nd_mrep); 1601 nd->nd_mrep = NULL; 1602 tsiz -= len; 1603 } 1604nfsmout: 1605 if (nd->nd_mrep != NULL) 1606 mbuf_freem(nd->nd_mrep); 1607 *iomode = committed; 1608 if (nd->nd_repstat && !error) 1609 error = nd->nd_repstat; 1610 return (error); 1611} 1612 1613/* 1614 * nfs mknod rpc 1615 * For NFS v2 this is a kludge. Use a create rpc but with the IFMT bits of the 1616 * mode set to specify the file type and the size field for rdev. 1617 */ 1618APPLESTATIC int 1619nfsrpc_mknod(vnode_t dvp, char *name, int namelen, struct vattr *vap, 1620 u_int32_t rdev, enum vtype vtyp, struct ucred *cred, NFSPROC_T *p, 1621 struct nfsvattr *dnap, struct nfsvattr *nnap, struct nfsfh **nfhpp, 1622 int *attrflagp, int *dattrflagp, void *dstuff) 1623{ 1624 u_int32_t *tl; 1625 int error = 0; 1626 struct nfsrv_descript nfsd, *nd = &nfsd; 1627 nfsattrbit_t attrbits; 1628 1629 *nfhpp = NULL; 1630 *attrflagp = 0; 1631 *dattrflagp = 0; 1632 if (namelen > NFS_MAXNAMLEN) 1633 return (ENAMETOOLONG); 1634 NFSCL_REQSTART(nd, NFSPROC_MKNOD, dvp); 1635 if (nd->nd_flag & ND_NFSV4) { 1636 NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 1637 *tl++ = vtonfsv34_type(vtyp); 1638 *tl++ = txdr_unsigned(NFSMAJOR(rdev)); 1639 *tl = txdr_unsigned(NFSMINOR(rdev)); 1640 } 1641 (void) nfsm_strtom(nd, name, namelen); 1642 if (nd->nd_flag & ND_NFSV3) { 1643 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1644 *tl = vtonfsv34_type(vtyp); 1645 } 1646 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) 1647 nfscl_fillsattr(nd, vap, dvp, 0, 0); 1648 if ((nd->nd_flag & ND_NFSV3) && 1649 (vtyp == VCHR || vtyp == VBLK)) { 1650 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1651 *tl++ = txdr_unsigned(NFSMAJOR(rdev)); 1652 *tl = txdr_unsigned(NFSMINOR(rdev)); 1653 } 1654 if (nd->nd_flag & ND_NFSV4) { 1655 NFSGETATTR_ATTRBIT(&attrbits); 1656 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1657 *tl++ = txdr_unsigned(NFSV4OP_GETFH); 1658 *tl = txdr_unsigned(NFSV4OP_GETATTR); 1659 (void) nfsrv_putattrbit(nd, &attrbits); 1660 } 1661 if (nd->nd_flag & ND_NFSV2) 1662 nfscl_fillsattr(nd, vap, dvp, NFSSATTR_SIZERDEV, rdev); 1663 error = nfscl_request(nd, dvp, p, cred, dstuff); 1664 if (error) 1665 return (error); 1666 if (nd->nd_flag & ND_NFSV4) 1667 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 1668 if (!nd->nd_repstat) { 1669 if (nd->nd_flag & ND_NFSV4) { 1670 NFSM_DISSECT(tl, u_int32_t *, 5 * NFSX_UNSIGNED); 1671 error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL); 1672 if (error) 1673 goto nfsmout; 1674 } 1675 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp); 1676 if (error) 1677 goto nfsmout; 1678 } 1679 if (nd->nd_flag & ND_NFSV3) 1680 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 1681 if (!error && nd->nd_repstat) 1682 error = nd->nd_repstat; 1683nfsmout: 1684 mbuf_freem(nd->nd_mrep); 1685 return (error); 1686} 1687 1688/* 1689 * nfs file create call 1690 * Mostly just call the approriate routine. (I separated out v4, so that 1691 * error recovery wouldn't be as difficult.) 1692 */ 1693APPLESTATIC int 1694nfsrpc_create(vnode_t dvp, char *name, int namelen, struct vattr *vap, 1695 nfsquad_t cverf, int fmode, struct ucred *cred, NFSPROC_T *p, 1696 struct nfsvattr *dnap, struct nfsvattr *nnap, struct nfsfh **nfhpp, 1697 int *attrflagp, int *dattrflagp, void *dstuff) 1698{ 1699 int error = 0, newone, expireret = 0, retrycnt, unlocked; 1700 struct nfsclowner *owp; 1701 struct nfscldeleg *dp; 1702 struct nfsmount *nmp = VFSTONFS(vnode_mount(dvp)); 1703 u_int32_t clidrev; 1704 1705 if (NFSHASNFSV4(nmp)) { 1706 retrycnt = 0; 1707 do { 1708 dp = NULL; 1709 error = nfscl_open(dvp, NULL, 0, (NFSV4OPEN_ACCESSWRITE | 1710 NFSV4OPEN_ACCESSREAD), 0, cred, p, &owp, NULL, &newone, 1711 NULL, 1); 1712 if (error) 1713 return (error); 1714 if (nmp->nm_clp != NULL) 1715 clidrev = nmp->nm_clp->nfsc_clientidrev; 1716 else 1717 clidrev = 0; 1718 error = nfsrpc_createv4(dvp, name, namelen, vap, cverf, fmode, 1719 owp, &dp, cred, p, dnap, nnap, nfhpp, attrflagp, dattrflagp, 1720 dstuff, &unlocked); 1721 if (dp != NULL) 1722 (void) nfscl_deleg(nmp->nm_mountp, owp->nfsow_clp, 1723 (*nfhpp)->nfh_fh, (*nfhpp)->nfh_len, cred, p, &dp); 1724 nfscl_ownerrelease(owp, error, newone, unlocked); 1725 if (error == NFSERR_GRACE || error == NFSERR_STALECLIENTID || 1726 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY) { 1727 (void) nfs_catnap(PZERO, "nfs_open"); 1728 } else if ((error == NFSERR_EXPIRED || 1729 error == NFSERR_BADSTATEID) && clidrev != 0) { 1730 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p); 1731 retrycnt++; 1732 } 1733 } while (error == NFSERR_GRACE || error == NFSERR_STALECLIENTID || 1734 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 1735 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) && 1736 expireret == 0 && clidrev != 0 && retrycnt < 4)); 1737 if (error && retrycnt >= 4) 1738 error = EIO; 1739 } else { 1740 error = nfsrpc_createv23(dvp, name, namelen, vap, cverf, 1741 fmode, cred, p, dnap, nnap, nfhpp, attrflagp, dattrflagp, 1742 dstuff); 1743 } 1744 return (error); 1745} 1746 1747/* 1748 * The create rpc for v2 and 3. 1749 */ 1750static int 1751nfsrpc_createv23(vnode_t dvp, char *name, int namelen, struct vattr *vap, 1752 nfsquad_t cverf, int fmode, struct ucred *cred, NFSPROC_T *p, 1753 struct nfsvattr *dnap, struct nfsvattr *nnap, struct nfsfh **nfhpp, 1754 int *attrflagp, int *dattrflagp, void *dstuff) 1755{ 1756 u_int32_t *tl; 1757 int error = 0; 1758 struct nfsrv_descript nfsd, *nd = &nfsd; 1759 1760 *nfhpp = NULL; 1761 *attrflagp = 0; 1762 *dattrflagp = 0; 1763 if (namelen > NFS_MAXNAMLEN) 1764 return (ENAMETOOLONG); 1765 NFSCL_REQSTART(nd, NFSPROC_CREATE, dvp); 1766 (void) nfsm_strtom(nd, name, namelen); 1767 if (nd->nd_flag & ND_NFSV3) { 1768 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1769 if (fmode & O_EXCL) { 1770 *tl = txdr_unsigned(NFSCREATE_EXCLUSIVE); 1771 NFSM_BUILD(tl, u_int32_t *, NFSX_VERF); 1772 *tl++ = cverf.lval[0]; 1773 *tl = cverf.lval[1]; 1774 } else { 1775 *tl = txdr_unsigned(NFSCREATE_UNCHECKED); 1776 nfscl_fillsattr(nd, vap, dvp, 0, 0); 1777 } 1778 } else { 1779 nfscl_fillsattr(nd, vap, dvp, NFSSATTR_SIZE0, 0); 1780 } 1781 error = nfscl_request(nd, dvp, p, cred, dstuff); 1782 if (error) 1783 return (error); 1784 if (nd->nd_repstat == 0) { 1785 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp); 1786 if (error) 1787 goto nfsmout; 1788 } 1789 if (nd->nd_flag & ND_NFSV3) 1790 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 1791 if (nd->nd_repstat != 0 && error == 0) 1792 error = nd->nd_repstat; 1793nfsmout: 1794 mbuf_freem(nd->nd_mrep); 1795 return (error); 1796} 1797 1798static int 1799nfsrpc_createv4(vnode_t dvp, char *name, int namelen, struct vattr *vap, 1800 nfsquad_t cverf, int fmode, struct nfsclowner *owp, struct nfscldeleg **dpp, 1801 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap, 1802 struct nfsvattr *nnap, struct nfsfh **nfhpp, int *attrflagp, 1803 int *dattrflagp, void *dstuff, int *unlockedp) 1804{ 1805 u_int32_t *tl; 1806 int error = 0, deleg, newone, ret, acesize, limitby; 1807 struct nfsrv_descript nfsd, *nd = &nfsd; 1808 struct nfsclopen *op; 1809 struct nfscldeleg *dp = NULL; 1810 struct nfsnode *np; 1811 struct nfsfh *nfhp; 1812 nfsattrbit_t attrbits; 1813 nfsv4stateid_t stateid; 1814 u_int32_t rflags; 1815 1816 *unlockedp = 0; 1817 *nfhpp = NULL; 1818 *dpp = NULL; 1819 *attrflagp = 0; 1820 *dattrflagp = 0; 1821 if (namelen > NFS_MAXNAMLEN) 1822 return (ENAMETOOLONG); 1823 NFSCL_REQSTART(nd, NFSPROC_CREATE, dvp); 1824 /* 1825 * For V4, this is actually an Open op. 1826 */ 1827 NFSM_BUILD(tl, u_int32_t *, 5 * NFSX_UNSIGNED); 1828 *tl++ = txdr_unsigned(owp->nfsow_seqid); 1829 *tl++ = txdr_unsigned(NFSV4OPEN_ACCESSWRITE | 1830 NFSV4OPEN_ACCESSREAD); 1831 *tl++ = txdr_unsigned(NFSV4OPEN_DENYNONE); 1832 *tl++ = owp->nfsow_clp->nfsc_clientid.lval[0]; 1833 *tl = owp->nfsow_clp->nfsc_clientid.lval[1]; 1834 (void) nfsm_strtom(nd, owp->nfsow_owner, NFSV4CL_LOCKNAMELEN); 1835 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1836 *tl++ = txdr_unsigned(NFSV4OPEN_CREATE); 1837 if (fmode & O_EXCL) { 1838 *tl = txdr_unsigned(NFSCREATE_EXCLUSIVE); 1839 NFSM_BUILD(tl, u_int32_t *, NFSX_VERF); 1840 *tl++ = cverf.lval[0]; 1841 *tl = cverf.lval[1]; 1842 } else { 1843 *tl = txdr_unsigned(NFSCREATE_UNCHECKED); 1844 nfscl_fillsattr(nd, vap, dvp, 0, 0); 1845 } 1846 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1847 *tl = txdr_unsigned(NFSV4OPEN_CLAIMNULL); 1848 (void) nfsm_strtom(nd, name, namelen); 1849 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1850 *tl++ = txdr_unsigned(NFSV4OP_GETFH); 1851 *tl = txdr_unsigned(NFSV4OP_GETATTR); 1852 NFSGETATTR_ATTRBIT(&attrbits); 1853 (void) nfsrv_putattrbit(nd, &attrbits); 1854 error = nfscl_request(nd, dvp, p, cred, dstuff); 1855 if (error) 1856 return (error); 1857 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 1858 if (error) 1859 goto nfsmout; 1860 NFSCL_INCRSEQID(owp->nfsow_seqid, nd); 1861 if (nd->nd_repstat == 0) { 1862 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID + 1863 6 * NFSX_UNSIGNED); 1864 stateid.seqid = *tl++; 1865 stateid.other[0] = *tl++; 1866 stateid.other[1] = *tl++; 1867 stateid.other[2] = *tl; 1868 rflags = fxdr_unsigned(u_int32_t, *(tl + 6)); 1869 (void) nfsrv_getattrbits(nd, &attrbits, NULL, NULL); 1870 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 1871 deleg = fxdr_unsigned(int, *tl); 1872 if (deleg == NFSV4OPEN_DELEGATEREAD || 1873 deleg == NFSV4OPEN_DELEGATEWRITE) { 1874 if (!(owp->nfsow_clp->nfsc_flags & 1875 NFSCLFLAGS_FIRSTDELEG)) 1876 owp->nfsow_clp->nfsc_flags |= 1877 (NFSCLFLAGS_FIRSTDELEG | NFSCLFLAGS_GOTDELEG); 1878 MALLOC(dp, struct nfscldeleg *, 1879 sizeof (struct nfscldeleg) + NFSX_V4FHMAX, 1880 M_NFSCLDELEG, M_WAITOK); 1881 LIST_INIT(&dp->nfsdl_owner); 1882 LIST_INIT(&dp->nfsdl_lock); 1883 dp->nfsdl_clp = owp->nfsow_clp; 1884 newnfs_copyincred(cred, &dp->nfsdl_cred); 1885 nfscl_lockinit(&dp->nfsdl_rwlock); 1886 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID + 1887 NFSX_UNSIGNED); 1888 dp->nfsdl_stateid.seqid = *tl++; 1889 dp->nfsdl_stateid.other[0] = *tl++; 1890 dp->nfsdl_stateid.other[1] = *tl++; 1891 dp->nfsdl_stateid.other[2] = *tl++; 1892 ret = fxdr_unsigned(int, *tl); 1893 if (deleg == NFSV4OPEN_DELEGATEWRITE) { 1894 dp->nfsdl_flags = NFSCLDL_WRITE; 1895 /* 1896 * Indicates how much the file can grow. 1897 */ 1898 NFSM_DISSECT(tl, u_int32_t *, 1899 3 * NFSX_UNSIGNED); 1900 limitby = fxdr_unsigned(int, *tl++); 1901 switch (limitby) { 1902 case NFSV4OPEN_LIMITSIZE: 1903 dp->nfsdl_sizelimit = fxdr_hyper(tl); 1904 break; 1905 case NFSV4OPEN_LIMITBLOCKS: 1906 dp->nfsdl_sizelimit = 1907 fxdr_unsigned(u_int64_t, *tl++); 1908 dp->nfsdl_sizelimit *= 1909 fxdr_unsigned(u_int64_t, *tl); 1910 break; 1911 default: 1912 error = NFSERR_BADXDR; 1913 goto nfsmout; 1914 }; 1915 } else { 1916 dp->nfsdl_flags = NFSCLDL_READ; 1917 } 1918 if (ret) 1919 dp->nfsdl_flags |= NFSCLDL_RECALL; 1920 error = nfsrv_dissectace(nd, &dp->nfsdl_ace, &ret, 1921 &acesize, p); 1922 if (error) 1923 goto nfsmout; 1924 } else if (deleg != NFSV4OPEN_DELEGATENONE) { 1925 error = NFSERR_BADXDR; 1926 goto nfsmout; 1927 } 1928 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp); 1929 if (error) 1930 goto nfsmout; 1931 if (dp != NULL && *attrflagp) { 1932 dp->nfsdl_change = nnap->na_filerev; 1933 dp->nfsdl_modtime = nnap->na_mtime; 1934 dp->nfsdl_flags |= NFSCLDL_MODTIMESET; 1935 } 1936 /* 1937 * We can now complete the Open state. 1938 */ 1939 nfhp = *nfhpp; 1940 if (dp != NULL) { 1941 dp->nfsdl_fhlen = nfhp->nfh_len; 1942 NFSBCOPY(nfhp->nfh_fh, dp->nfsdl_fh, nfhp->nfh_len); 1943 } 1944 /* 1945 * Get an Open structure that will be 1946 * attached to the OpenOwner, acquired already. 1947 */ 1948 error = nfscl_open(dvp, nfhp->nfh_fh, nfhp->nfh_len, 1949 (NFSV4OPEN_ACCESSWRITE | NFSV4OPEN_ACCESSREAD), 0, 1950 cred, p, NULL, &op, &newone, NULL, 0); 1951 if (error) 1952 goto nfsmout; 1953 op->nfso_stateid = stateid; 1954 newnfs_copyincred(cred, &op->nfso_cred); 1955 if ((rflags & NFSV4OPEN_RESULTCONFIRM)) { 1956 do { 1957 ret = nfsrpc_openconfirm(dvp, nfhp->nfh_fh, 1958 nfhp->nfh_len, op, cred, p); 1959 if (ret == NFSERR_DELAY) 1960 (void) nfs_catnap(PZERO, "nfs_create"); 1961 } while (ret == NFSERR_DELAY); 1962 error = ret; 1963 } 1964 1965 /* 1966 * If the server is handing out delegations, but we didn't 1967 * get one because an OpenConfirm was required, try the 1968 * Open again, to get a delegation. This is a harmless no-op, 1969 * from a server's point of view. 1970 */ 1971 if ((rflags & NFSV4OPEN_RESULTCONFIRM) && 1972 (owp->nfsow_clp->nfsc_flags & NFSCLFLAGS_GOTDELEG) && 1973 !error && dp == NULL) { 1974 np = VTONFS(dvp); 1975 do { 1976 ret = nfsrpc_openrpc(VFSTONFS(vnode_mount(dvp)), dvp, 1977 np->n_fhp->nfh_fh, np->n_fhp->nfh_len, 1978 nfhp->nfh_fh, nfhp->nfh_len, 1979 (NFSV4OPEN_ACCESSWRITE | NFSV4OPEN_ACCESSREAD), op, 1980 name, namelen, &dp, 0, 0x0, cred, p, 0, 1); 1981 if (ret == NFSERR_DELAY) 1982 (void) nfs_catnap(PZERO, "nfs_crt2"); 1983 } while (ret == NFSERR_DELAY); 1984 if (ret) { 1985 if (dp != NULL) 1986 FREE((caddr_t)dp, M_NFSCLDELEG); 1987 if (ret == NFSERR_STALECLIENTID || 1988 ret == NFSERR_STALEDONTRECOVER) 1989 error = ret; 1990 } 1991 } 1992 nfscl_openrelease(op, error, newone); 1993 *unlockedp = 1; 1994 } 1995 if (nd->nd_repstat != 0 && error == 0) 1996 error = nd->nd_repstat; 1997 if (error == NFSERR_STALECLIENTID) 1998 nfscl_initiate_recovery(owp->nfsow_clp); 1999nfsmout: 2000 if (!error) 2001 *dpp = dp; 2002 else if (dp != NULL) 2003 FREE((caddr_t)dp, M_NFSCLDELEG); 2004 mbuf_freem(nd->nd_mrep); 2005 return (error); 2006} 2007 2008/* 2009 * Nfs remove rpc 2010 */ 2011APPLESTATIC int 2012nfsrpc_remove(vnode_t dvp, char *name, int namelen, vnode_t vp, 2013 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap, int *dattrflagp, 2014 void *dstuff) 2015{ 2016 u_int32_t *tl; 2017 struct nfsrv_descript nfsd, *nd = &nfsd; 2018 struct nfsnode *np; 2019 struct nfsmount *nmp; 2020 nfsv4stateid_t dstateid; 2021 int error, ret = 0, i; 2022 2023 *dattrflagp = 0; 2024 if (namelen > NFS_MAXNAMLEN) 2025 return (ENAMETOOLONG); 2026 nmp = VFSTONFS(vnode_mount(dvp)); 2027tryagain: 2028 if (NFSHASNFSV4(nmp) && ret == 0) { 2029 ret = nfscl_removedeleg(vp, p, &dstateid); 2030 if (ret == 1) { 2031 NFSCL_REQSTART(nd, NFSPROC_RETDELEGREMOVE, vp); 2032 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID + 2033 NFSX_UNSIGNED); 2034 *tl++ = dstateid.seqid; 2035 *tl++ = dstateid.other[0]; 2036 *tl++ = dstateid.other[1]; 2037 *tl++ = dstateid.other[2]; 2038 *tl = txdr_unsigned(NFSV4OP_PUTFH); 2039 np = VTONFS(dvp); 2040 (void) nfsm_fhtom(nd, np->n_fhp->nfh_fh, 2041 np->n_fhp->nfh_len, 0); 2042 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2043 *tl = txdr_unsigned(NFSV4OP_REMOVE); 2044 } 2045 } else { 2046 ret = 0; 2047 } 2048 if (ret == 0) 2049 NFSCL_REQSTART(nd, NFSPROC_REMOVE, dvp); 2050 (void) nfsm_strtom(nd, name, namelen); 2051 error = nfscl_request(nd, dvp, p, cred, dstuff); 2052 if (error) 2053 return (error); 2054 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) { 2055 /* For NFSv4, parse out any Delereturn replies. */ 2056 if (ret > 0 && nd->nd_repstat != 0 && 2057 (nd->nd_flag & ND_NOMOREDATA)) { 2058 /* 2059 * If the Delegreturn failed, try again without 2060 * it. The server will Recall, as required. 2061 */ 2062 mbuf_freem(nd->nd_mrep); 2063 goto tryagain; 2064 } 2065 for (i = 0; i < (ret * 2); i++) { 2066 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == 2067 ND_NFSV4) { 2068 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2069 if (*(tl + 1)) 2070 nd->nd_flag |= ND_NOMOREDATA; 2071 } 2072 } 2073 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 2074 } 2075 if (nd->nd_repstat && !error) 2076 error = nd->nd_repstat; 2077nfsmout: 2078 mbuf_freem(nd->nd_mrep); 2079 return (error); 2080} 2081 2082/* 2083 * Do an nfs rename rpc. 2084 */ 2085APPLESTATIC int 2086nfsrpc_rename(vnode_t fdvp, vnode_t fvp, char *fnameptr, int fnamelen, 2087 vnode_t tdvp, vnode_t tvp, char *tnameptr, int tnamelen, struct ucred *cred, 2088 NFSPROC_T *p, struct nfsvattr *fnap, struct nfsvattr *tnap, 2089 int *fattrflagp, int *tattrflagp, void *fstuff, void *tstuff) 2090{ 2091 u_int32_t *tl; 2092 struct nfsrv_descript nfsd, *nd = &nfsd; 2093 struct nfsmount *nmp; 2094 struct nfsnode *np; 2095 nfsattrbit_t attrbits; 2096 nfsv4stateid_t fdstateid, tdstateid; 2097 int error = 0, ret = 0, gottd = 0, gotfd = 0, i; 2098 2099 *fattrflagp = 0; 2100 *tattrflagp = 0; 2101 nmp = VFSTONFS(vnode_mount(fdvp)); 2102 if (fnamelen > NFS_MAXNAMLEN || tnamelen > NFS_MAXNAMLEN) 2103 return (ENAMETOOLONG); 2104tryagain: 2105 if (NFSHASNFSV4(nmp) && ret == 0) { 2106 ret = nfscl_renamedeleg(fvp, &fdstateid, &gotfd, tvp, 2107 &tdstateid, &gottd, p); 2108 if (gotfd && gottd) { 2109 NFSCL_REQSTART(nd, NFSPROC_RETDELEGRENAME2, fvp); 2110 } else if (gotfd) { 2111 NFSCL_REQSTART(nd, NFSPROC_RETDELEGRENAME1, fvp); 2112 } else if (gottd) { 2113 NFSCL_REQSTART(nd, NFSPROC_RETDELEGRENAME1, tvp); 2114 } 2115 if (gotfd) { 2116 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID); 2117 *tl++ = fdstateid.seqid; 2118 *tl++ = fdstateid.other[0]; 2119 *tl++ = fdstateid.other[1]; 2120 *tl = fdstateid.other[2]; 2121 if (gottd) { 2122 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2123 *tl = txdr_unsigned(NFSV4OP_PUTFH); 2124 np = VTONFS(tvp); 2125 (void) nfsm_fhtom(nd, np->n_fhp->nfh_fh, 2126 np->n_fhp->nfh_len, 0); 2127 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2128 *tl = txdr_unsigned(NFSV4OP_DELEGRETURN); 2129 } 2130 } 2131 if (gottd) { 2132 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID); 2133 *tl++ = tdstateid.seqid; 2134 *tl++ = tdstateid.other[0]; 2135 *tl++ = tdstateid.other[1]; 2136 *tl = tdstateid.other[2]; 2137 } 2138 if (ret > 0) { 2139 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2140 *tl = txdr_unsigned(NFSV4OP_PUTFH); 2141 np = VTONFS(fdvp); 2142 (void) nfsm_fhtom(nd, np->n_fhp->nfh_fh, 2143 np->n_fhp->nfh_len, 0); 2144 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2145 *tl = txdr_unsigned(NFSV4OP_SAVEFH); 2146 } 2147 } else { 2148 ret = 0; 2149 } 2150 if (ret == 0) 2151 NFSCL_REQSTART(nd, NFSPROC_RENAME, fdvp); 2152 if (nd->nd_flag & ND_NFSV4) { 2153 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2154 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2155 NFSWCCATTR_ATTRBIT(&attrbits); 2156 (void) nfsrv_putattrbit(nd, &attrbits); 2157 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2158 *tl = txdr_unsigned(NFSV4OP_PUTFH); 2159 (void) nfsm_fhtom(nd, VTONFS(tdvp)->n_fhp->nfh_fh, 2160 VTONFS(tdvp)->n_fhp->nfh_len, 0); 2161 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2162 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2163 (void) nfsrv_putattrbit(nd, &attrbits); 2164 nd->nd_flag |= ND_V4WCCATTR; 2165 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2166 *tl = txdr_unsigned(NFSV4OP_RENAME); 2167 } 2168 (void) nfsm_strtom(nd, fnameptr, fnamelen); 2169 if (!(nd->nd_flag & ND_NFSV4)) 2170 (void) nfsm_fhtom(nd, VTONFS(tdvp)->n_fhp->nfh_fh, 2171 VTONFS(tdvp)->n_fhp->nfh_len, 0); 2172 (void) nfsm_strtom(nd, tnameptr, tnamelen); 2173 error = nfscl_request(nd, fdvp, p, cred, fstuff); 2174 if (error) 2175 return (error); 2176 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) { 2177 /* For NFSv4, parse out any Delereturn replies. */ 2178 if (ret > 0 && nd->nd_repstat != 0 && 2179 (nd->nd_flag & ND_NOMOREDATA)) { 2180 /* 2181 * If the Delegreturn failed, try again without 2182 * it. The server will Recall, as required. 2183 */ 2184 mbuf_freem(nd->nd_mrep); 2185 goto tryagain; 2186 } 2187 for (i = 0; i < (ret * 2); i++) { 2188 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == 2189 ND_NFSV4) { 2190 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2191 if (*(tl + 1)) { 2192 if (i == 0 && ret > 1) { 2193 /* 2194 * If the Delegreturn failed, try again 2195 * without it. The server will Recall, as 2196 * required. 2197 * If ret > 1, the first iteration of this 2198 * loop is the second DelegReturn result. 2199 */ 2200 mbuf_freem(nd->nd_mrep); 2201 goto tryagain; 2202 } else { 2203 nd->nd_flag |= ND_NOMOREDATA; 2204 } 2205 } 2206 } 2207 } 2208 /* Now, the first wcc attribute reply. */ 2209 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == ND_NFSV4) { 2210 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2211 if (*(tl + 1)) 2212 nd->nd_flag |= ND_NOMOREDATA; 2213 } 2214 error = nfscl_wcc_data(nd, fdvp, fnap, fattrflagp, NULL, 2215 fstuff); 2216 /* and the second wcc attribute reply. */ 2217 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == ND_NFSV4 && 2218 !error) { 2219 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2220 if (*(tl + 1)) 2221 nd->nd_flag |= ND_NOMOREDATA; 2222 } 2223 if (!error) 2224 error = nfscl_wcc_data(nd, tdvp, tnap, tattrflagp, 2225 NULL, tstuff); 2226 } 2227 if (nd->nd_repstat && !error) 2228 error = nd->nd_repstat; 2229nfsmout: 2230 mbuf_freem(nd->nd_mrep); 2231 return (error); 2232} 2233 2234/* 2235 * nfs hard link create rpc 2236 */ 2237APPLESTATIC int 2238nfsrpc_link(vnode_t dvp, vnode_t vp, char *name, int namelen, 2239 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap, 2240 struct nfsvattr *nap, int *attrflagp, int *dattrflagp, void *dstuff) 2241{ 2242 u_int32_t *tl; 2243 struct nfsrv_descript nfsd, *nd = &nfsd; 2244 nfsattrbit_t attrbits; 2245 int error = 0; 2246 2247 *attrflagp = 0; 2248 *dattrflagp = 0; 2249 if (namelen > NFS_MAXNAMLEN) 2250 return (ENAMETOOLONG); 2251 NFSCL_REQSTART(nd, NFSPROC_LINK, vp); 2252 if (nd->nd_flag & ND_NFSV4) { 2253 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2254 *tl = txdr_unsigned(NFSV4OP_PUTFH); 2255 } 2256 (void) nfsm_fhtom(nd, VTONFS(dvp)->n_fhp->nfh_fh, 2257 VTONFS(dvp)->n_fhp->nfh_len, 0); 2258 if (nd->nd_flag & ND_NFSV4) { 2259 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2260 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2261 NFSWCCATTR_ATTRBIT(&attrbits); 2262 (void) nfsrv_putattrbit(nd, &attrbits); 2263 nd->nd_flag |= ND_V4WCCATTR; 2264 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2265 *tl = txdr_unsigned(NFSV4OP_LINK); 2266 } 2267 (void) nfsm_strtom(nd, name, namelen); 2268 error = nfscl_request(nd, vp, p, cred, dstuff); 2269 if (error) 2270 return (error); 2271 if (nd->nd_flag & ND_NFSV3) { 2272 error = nfscl_postop_attr(nd, nap, attrflagp, dstuff); 2273 if (!error) 2274 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, 2275 NULL, dstuff); 2276 } else if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == ND_NFSV4) { 2277 /* 2278 * First, parse out the PutFH and Getattr result. 2279 */ 2280 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2281 if (!(*(tl + 1))) 2282 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2283 if (*(tl + 1)) 2284 nd->nd_flag |= ND_NOMOREDATA; 2285 /* 2286 * Get the pre-op attributes. 2287 */ 2288 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 2289 } 2290 if (nd->nd_repstat && !error) 2291 error = nd->nd_repstat; 2292nfsmout: 2293 mbuf_freem(nd->nd_mrep); 2294 return (error); 2295} 2296 2297/* 2298 * nfs symbolic link create rpc 2299 */ 2300APPLESTATIC int 2301nfsrpc_symlink(vnode_t dvp, char *name, int namelen, char *target, 2302 struct vattr *vap, struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap, 2303 struct nfsvattr *nnap, struct nfsfh **nfhpp, int *attrflagp, 2304 int *dattrflagp, void *dstuff) 2305{ 2306 u_int32_t *tl; 2307 struct nfsrv_descript nfsd, *nd = &nfsd; 2308 struct nfsmount *nmp; 2309 int slen, error = 0; 2310 2311 *nfhpp = NULL; 2312 *attrflagp = 0; 2313 *dattrflagp = 0; 2314 nmp = VFSTONFS(vnode_mount(dvp)); 2315 slen = strlen(target); 2316 if (slen > NFS_MAXPATHLEN || namelen > NFS_MAXNAMLEN) 2317 return (ENAMETOOLONG); 2318 NFSCL_REQSTART(nd, NFSPROC_SYMLINK, dvp); 2319 if (nd->nd_flag & ND_NFSV4) { 2320 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2321 *tl = txdr_unsigned(NFLNK); 2322 (void) nfsm_strtom(nd, target, slen); 2323 } 2324 (void) nfsm_strtom(nd, name, namelen); 2325 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) 2326 nfscl_fillsattr(nd, vap, dvp, 0, 0); 2327 if (!(nd->nd_flag & ND_NFSV4)) 2328 (void) nfsm_strtom(nd, target, slen); 2329 if (nd->nd_flag & ND_NFSV2) 2330 nfscl_fillsattr(nd, vap, dvp, NFSSATTR_SIZENEG1, 0); 2331 error = nfscl_request(nd, dvp, p, cred, dstuff); 2332 if (error) 2333 return (error); 2334 if (nd->nd_flag & ND_NFSV4) 2335 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 2336 if ((nd->nd_flag & ND_NFSV3) && !error) { 2337 if (!nd->nd_repstat) 2338 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp); 2339 if (!error) 2340 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, 2341 NULL, dstuff); 2342 } 2343 if (nd->nd_repstat && !error) 2344 error = nd->nd_repstat; 2345 mbuf_freem(nd->nd_mrep); 2346 /* 2347 * Kludge: Map EEXIST => 0 assuming that it is a reply to a retry. 2348 */ 2349 if (error == EEXIST) 2350 error = 0; 2351 return (error); 2352} 2353 2354/* 2355 * nfs make dir rpc 2356 */ 2357APPLESTATIC int 2358nfsrpc_mkdir(vnode_t dvp, char *name, int namelen, struct vattr *vap, 2359 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap, 2360 struct nfsvattr *nnap, struct nfsfh **nfhpp, int *attrflagp, 2361 int *dattrflagp, void *dstuff) 2362{ 2363 u_int32_t *tl; 2364 struct nfsrv_descript nfsd, *nd = &nfsd; 2365 nfsattrbit_t attrbits; 2366 int error = 0; 2367 2368 *nfhpp = NULL; 2369 *attrflagp = 0; 2370 *dattrflagp = 0; 2371 if (namelen > NFS_MAXNAMLEN) 2372 return (ENAMETOOLONG); 2373 NFSCL_REQSTART(nd, NFSPROC_MKDIR, dvp); 2374 if (nd->nd_flag & ND_NFSV4) { 2375 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2376 *tl = txdr_unsigned(NFDIR); 2377 } 2378 (void) nfsm_strtom(nd, name, namelen); 2379 nfscl_fillsattr(nd, vap, dvp, NFSSATTR_SIZENEG1, 0); 2380 if (nd->nd_flag & ND_NFSV4) { 2381 NFSGETATTR_ATTRBIT(&attrbits); 2382 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2383 *tl++ = txdr_unsigned(NFSV4OP_GETFH); 2384 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2385 (void) nfsrv_putattrbit(nd, &attrbits); 2386 } 2387 error = nfscl_request(nd, dvp, p, cred, dstuff); 2388 if (error) 2389 return (error); 2390 if (nd->nd_flag & ND_NFSV4) 2391 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 2392 if (!nd->nd_repstat && !error) { 2393 if (nd->nd_flag & ND_NFSV4) { 2394 NFSM_DISSECT(tl, u_int32_t *, 5 * NFSX_UNSIGNED); 2395 error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL); 2396 } 2397 if (!error) 2398 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp); 2399 } 2400 if ((nd->nd_flag & ND_NFSV3) && !error) 2401 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 2402 if (nd->nd_repstat && !error) 2403 error = nd->nd_repstat; 2404nfsmout: 2405 mbuf_freem(nd->nd_mrep); 2406 /* 2407 * Kludge: Map EEXIST => 0 assuming that you have a reply to a retry. 2408 */ 2409 if (error == EEXIST) 2410 error = 0; 2411 return (error); 2412} 2413 2414/* 2415 * nfs remove directory call 2416 */ 2417APPLESTATIC int 2418nfsrpc_rmdir(vnode_t dvp, char *name, int namelen, struct ucred *cred, 2419 NFSPROC_T *p, struct nfsvattr *dnap, int *dattrflagp, void *dstuff) 2420{ 2421 struct nfsrv_descript nfsd, *nd = &nfsd; 2422 int error = 0; 2423 2424 *dattrflagp = 0; 2425 if (namelen > NFS_MAXNAMLEN) 2426 return (ENAMETOOLONG); 2427 NFSCL_REQSTART(nd, NFSPROC_RMDIR, dvp); 2428 (void) nfsm_strtom(nd, name, namelen); 2429 error = nfscl_request(nd, dvp, p, cred, dstuff); 2430 if (error) 2431 return (error); 2432 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) 2433 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 2434 if (nd->nd_repstat && !error) 2435 error = nd->nd_repstat; 2436 mbuf_freem(nd->nd_mrep); 2437 /* 2438 * Kludge: Map ENOENT => 0 assuming that you have a reply to a retry. 2439 */ 2440 if (error == ENOENT) 2441 error = 0; 2442 return (error); 2443} 2444 2445/* 2446 * Readdir rpc. 2447 * Always returns with either uio_resid unchanged, if you are at the 2448 * end of the directory, or uio_resid == 0, with all DIRBLKSIZ chunks 2449 * filled in. 2450 * I felt this would allow caching of directory blocks more easily 2451 * than returning a pertially filled block. 2452 * Directory offset cookies: 2453 * Oh my, what to do with them... 2454 * I can think of three ways to deal with them: 2455 * 1 - have the layer above these RPCs maintain a map between logical 2456 * directory byte offsets and the NFS directory offset cookies 2457 * 2 - pass the opaque directory offset cookies up into userland 2458 * and let the libc functions deal with them, via the system call 2459 * 3 - return them to userland in the "struct dirent", so future versions 2460 * of libc can use them and do whatever is necessary to amke things work 2461 * above these rpc calls, in the meantime 2462 * For now, I do #3 by "hiding" the directory offset cookies after the 2463 * d_name field in struct dirent. This is space inside d_reclen that 2464 * will be ignored by anything that doesn't know about them. 2465 * The directory offset cookies are filled in as the last 8 bytes of 2466 * each directory entry, after d_name. Someday, the userland libc 2467 * functions may be able to use these. In the meantime, it satisfies 2468 * OpenBSD's requirements for cookies being returned. 2469 * If expects the directory offset cookie for the read to be in uio_offset 2470 * and returns the one for the next entry after this directory block in 2471 * there, as well. 2472 */ 2473APPLESTATIC int 2474nfsrpc_readdir(vnode_t vp, struct uio *uiop, nfsuint64 *cookiep, 2475 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, 2476 int *eofp, void *stuff) 2477{ 2478 int len, left; 2479 struct dirent *dp = NULL; 2480 u_int32_t *tl; 2481 nfsquad_t cookie, ncookie; 2482 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 2483 struct nfsnode *dnp = VTONFS(vp); 2484 struct nfsvattr nfsva; 2485 struct nfsrv_descript nfsd, *nd = &nfsd; 2486 int error = 0, tlen, more_dirs = 1, blksiz = 0, bigenough = 1; 2487 int reqsize, tryformoredirs = 1, readsize, eof = 0, gotmnton = 0; 2488 long dotfileid, dotdotfileid = 0; 2489 u_int32_t fakefileno = 0xffffffff, rderr; 2490 char *cp; 2491 nfsattrbit_t attrbits, dattrbits; 2492 u_int32_t *tl2 = NULL; 2493 size_t tresid; 2494 2495#ifdef DIAGNOSTIC 2496 if (uiop->uio_iovcnt != 1 || (uio_uio_resid(uiop) & (DIRBLKSIZ - 1))) 2497 panic("nfs readdirrpc bad uio"); 2498#endif 2499 2500 /* 2501 * There is no point in reading a lot more than uio_resid, however 2502 * adding one additional DIRBLKSIZ makes sense. Since uio_resid 2503 * and nm_readdirsize are both exact multiples of DIRBLKSIZ, this 2504 * will never make readsize > nm_readdirsize. 2505 */ 2506 readsize = nmp->nm_readdirsize; 2507 if (readsize > uio_uio_resid(uiop)) 2508 readsize = uio_uio_resid(uiop) + DIRBLKSIZ; 2509 2510 *attrflagp = 0; 2511 if (eofp) 2512 *eofp = 0; 2513 tresid = uio_uio_resid(uiop); 2514 cookie.lval[0] = cookiep->nfsuquad[0]; 2515 cookie.lval[1] = cookiep->nfsuquad[1]; 2516 nd->nd_mrep = NULL; 2517 2518 /* 2519 * For NFSv4, first create the "." and ".." entries. 2520 */ 2521 if (NFSHASNFSV4(nmp)) { 2522 reqsize = 6 * NFSX_UNSIGNED; 2523 NFSGETATTR_ATTRBIT(&dattrbits); 2524 NFSZERO_ATTRBIT(&attrbits); 2525 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_FILEID); 2526 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_TYPE); 2527 if (NFSISSET_ATTRBIT(&dnp->n_vattr.na_suppattr, 2528 NFSATTRBIT_MOUNTEDONFILEID)) { 2529 NFSSETBIT_ATTRBIT(&attrbits, 2530 NFSATTRBIT_MOUNTEDONFILEID); 2531 gotmnton = 1; 2532 } else { 2533 /* 2534 * Must fake it. Use the fileno, except when the 2535 * fsid is != to that of the directory. For that 2536 * case, generate a fake fileno that is not the same. 2537 */ 2538 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_FSID); 2539 gotmnton = 0; 2540 } 2541 2542 /* 2543 * Joy, oh joy. For V4 we get to hand craft '.' and '..'. 2544 */ 2545 if (uiop->uio_offset == 0) { 2546#if defined(__FreeBSD_version) && __FreeBSD_version >= 800000 2547 error = VOP_GETATTR(vp, &nfsva.na_vattr, cred); 2548#else 2549 error = VOP_GETATTR(vp, &nfsva.na_vattr, cred, p); 2550#endif 2551 if (error) 2552 return (error); 2553 dotfileid = nfsva.na_fileid; 2554 NFSCL_REQSTART(nd, NFSPROC_LOOKUPP, vp); 2555 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2556 *tl++ = txdr_unsigned(NFSV4OP_GETFH); 2557 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2558 (void) nfsrv_putattrbit(nd, &attrbits); 2559 error = nfscl_request(nd, vp, p, cred, stuff); 2560 if (error) 2561 return (error); 2562 if (nd->nd_repstat == 0) { 2563 NFSM_DISSECT(tl, u_int32_t *, 3*NFSX_UNSIGNED); 2564 len = fxdr_unsigned(int, *(tl + 2)); 2565 if (len > 0 && len <= NFSX_V4FHMAX) 2566 error = nfsm_advance(nd, NFSM_RNDUP(len), -1); 2567 else 2568 error = EPERM; 2569 if (!error) { 2570 NFSM_DISSECT(tl, u_int32_t *, 2*NFSX_UNSIGNED); 2571 nfsva.na_mntonfileno = 0xffffffff; 2572 error = nfsv4_loadattr(nd, NULL, &nfsva, NULL, 2573 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0, 2574 NULL, NULL, NULL, p, cred); 2575 if (error) { 2576 dotdotfileid = dotfileid; 2577 } else if (gotmnton) { 2578 if (nfsva.na_mntonfileno != 0xffffffff) 2579 dotdotfileid = nfsva.na_mntonfileno; 2580 else 2581 dotdotfileid = nfsva.na_fileid; 2582 } else if (nfsva.na_filesid[0] == 2583 dnp->n_vattr.na_filesid[0] && 2584 nfsva.na_filesid[1] == 2585 dnp->n_vattr.na_filesid[1]) { 2586 dotdotfileid = nfsva.na_fileid; 2587 } else { 2588 do { 2589 fakefileno--; 2590 } while (fakefileno == 2591 nfsva.na_fileid); 2592 dotdotfileid = fakefileno; 2593 } 2594 } 2595 } else if (nd->nd_repstat == NFSERR_NOENT) { 2596 /* 2597 * Lookupp returns NFSERR_NOENT when we are 2598 * at the root, so just use the current dir. 2599 */ 2600 nd->nd_repstat = 0; 2601 dotdotfileid = dotfileid; 2602 } else { 2603 error = nd->nd_repstat; 2604 } 2605 mbuf_freem(nd->nd_mrep); 2606 if (error) 2607 return (error); 2608 nd->nd_mrep = NULL; 2609 dp = (struct dirent *) CAST_DOWN(caddr_t, uio_iov_base(uiop)); 2610 dp->d_type = DT_DIR; 2611 dp->d_fileno = dotfileid; 2612 dp->d_namlen = 1; 2613 dp->d_name[0] = '.'; 2614 dp->d_name[1] = '\0'; 2615 dp->d_reclen = DIRENT_SIZE(dp) + NFSX_HYPER; 2616 /* 2617 * Just make these offset cookie 0. 2618 */ 2619 tl = (u_int32_t *)&dp->d_name[4]; 2620 *tl++ = 0; 2621 *tl = 0; 2622 blksiz += dp->d_reclen; 2623 uio_uio_resid_add(uiop, -(dp->d_reclen)); 2624 uiop->uio_offset += dp->d_reclen; 2625 uio_iov_base_add(uiop, dp->d_reclen); 2626 uio_iov_len_add(uiop, -(dp->d_reclen)); 2627 dp = (struct dirent *) CAST_DOWN(caddr_t, uio_iov_base(uiop)); 2628 dp->d_type = DT_DIR; 2629 dp->d_fileno = dotdotfileid; 2630 dp->d_namlen = 2; 2631 dp->d_name[0] = '.'; 2632 dp->d_name[1] = '.'; 2633 dp->d_name[2] = '\0'; 2634 dp->d_reclen = DIRENT_SIZE(dp) + NFSX_HYPER; 2635 /* 2636 * Just make these offset cookie 0. 2637 */ 2638 tl = (u_int32_t *)&dp->d_name[4]; 2639 *tl++ = 0; 2640 *tl = 0; 2641 blksiz += dp->d_reclen; 2642 uio_uio_resid_add(uiop, -(dp->d_reclen)); 2643 uiop->uio_offset += dp->d_reclen; 2644 uio_iov_base_add(uiop, dp->d_reclen); 2645 uio_iov_len_add(uiop, -(dp->d_reclen)); 2646 } 2647 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_RDATTRERROR); 2648 } else { 2649 reqsize = 5 * NFSX_UNSIGNED; 2650 } 2651 2652 2653 /* 2654 * Loop around doing readdir rpc's of size readsize. 2655 * The stopping criteria is EOF or buffer full. 2656 */ 2657 while (more_dirs && bigenough) { 2658 *attrflagp = 0; 2659 NFSCL_REQSTART(nd, NFSPROC_READDIR, vp); 2660 if (nd->nd_flag & ND_NFSV2) { 2661 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2662 *tl++ = cookie.lval[1]; 2663 *tl = txdr_unsigned(readsize); 2664 } else { 2665 NFSM_BUILD(tl, u_int32_t *, reqsize); 2666 *tl++ = cookie.lval[0]; 2667 *tl++ = cookie.lval[1]; 2668 if (cookie.qval == 0) { 2669 *tl++ = 0; 2670 *tl++ = 0; 2671 } else { 2672 NFSLOCKNODE(dnp); 2673 *tl++ = dnp->n_cookieverf.nfsuquad[0]; 2674 *tl++ = dnp->n_cookieverf.nfsuquad[1]; 2675 NFSUNLOCKNODE(dnp); 2676 } 2677 if (nd->nd_flag & ND_NFSV4) { 2678 *tl++ = txdr_unsigned(readsize); 2679 *tl = txdr_unsigned(readsize); 2680 (void) nfsrv_putattrbit(nd, &attrbits); 2681 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2682 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2683 (void) nfsrv_putattrbit(nd, &dattrbits); 2684 } else { 2685 *tl = txdr_unsigned(readsize); 2686 } 2687 } 2688 error = nfscl_request(nd, vp, p, cred, stuff); 2689 if (error) 2690 return (error); 2691 if (!(nd->nd_flag & ND_NFSV2)) { 2692 if (nd->nd_flag & ND_NFSV3) 2693 error = nfscl_postop_attr(nd, nap, attrflagp, 2694 stuff); 2695 if (!nd->nd_repstat && !error) { 2696 NFSM_DISSECT(tl, u_int32_t *, NFSX_HYPER); 2697 NFSLOCKNODE(dnp); 2698 dnp->n_cookieverf.nfsuquad[0] = *tl++; 2699 dnp->n_cookieverf.nfsuquad[1] = *tl; 2700 NFSUNLOCKNODE(dnp); 2701 } 2702 } 2703 if (nd->nd_repstat || error) { 2704 if (!error) 2705 error = nd->nd_repstat; 2706 goto nfsmout; 2707 } 2708 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2709 more_dirs = fxdr_unsigned(int, *tl); 2710 if (!more_dirs) 2711 tryformoredirs = 0; 2712 2713 /* loop thru the dir entries, doctoring them to 4bsd form */ 2714 while (more_dirs && bigenough) { 2715 if (nd->nd_flag & ND_NFSV4) { 2716 NFSM_DISSECT(tl, u_int32_t *, 3*NFSX_UNSIGNED); 2717 ncookie.lval[0] = *tl++; 2718 ncookie.lval[1] = *tl++; 2719 len = fxdr_unsigned(int, *tl); 2720 } else if (nd->nd_flag & ND_NFSV3) { 2721 NFSM_DISSECT(tl, u_int32_t *, 3*NFSX_UNSIGNED); 2722 nfsva.na_fileid = 2723 fxdr_unsigned(long, *++tl); 2724 len = fxdr_unsigned(int, *++tl); 2725 } else { 2726 NFSM_DISSECT(tl, u_int32_t *, 2*NFSX_UNSIGNED); 2727 nfsva.na_fileid = 2728 fxdr_unsigned(long, *tl++); 2729 len = fxdr_unsigned(int, *tl); 2730 } 2731 if (len <= 0 || len > NFS_MAXNAMLEN) { 2732 error = EBADRPC; 2733 goto nfsmout; 2734 } 2735 tlen = NFSM_RNDUP(len); 2736 if (tlen == len) 2737 tlen += 4; /* To ensure null termination */ 2738 left = DIRBLKSIZ - blksiz; 2739 if ((int)(tlen + DIRHDSIZ + NFSX_HYPER) > left) { 2740 dp->d_reclen += left; 2741 uio_iov_base_add(uiop, left); 2742 uio_iov_len_add(uiop, -(left)); 2743 uio_uio_resid_add(uiop, -(left)); 2744 uiop->uio_offset += left; 2745 blksiz = 0; 2746 } 2747 if ((int)(tlen + DIRHDSIZ + NFSX_HYPER) > uio_uio_resid(uiop)) 2748 bigenough = 0; 2749 if (bigenough) { 2750 dp = (struct dirent *) CAST_DOWN(caddr_t, uio_iov_base(uiop)); 2751 dp->d_namlen = len; 2752 dp->d_reclen = tlen + DIRHDSIZ + NFSX_HYPER; 2753 dp->d_type = DT_UNKNOWN; 2754 blksiz += dp->d_reclen; 2755 if (blksiz == DIRBLKSIZ) 2756 blksiz = 0; 2757 uio_uio_resid_add(uiop, -(DIRHDSIZ)); 2758 uiop->uio_offset += DIRHDSIZ; 2759 uio_iov_base_add(uiop, DIRHDSIZ); 2760 uio_iov_len_add(uiop, -(DIRHDSIZ)); 2761 error = nfsm_mbufuio(nd, uiop, len); 2762 if (error) 2763 goto nfsmout; 2764 cp = CAST_DOWN(caddr_t, uio_iov_base(uiop)); 2765 tlen -= len; 2766 *cp = '\0'; /* null terminate */ 2767 cp += tlen; /* points to cookie storage */ 2768 tl2 = (u_int32_t *)cp; 2769 uio_iov_base_add(uiop, (tlen + NFSX_HYPER)); 2770 uio_iov_len_add(uiop, -(tlen + NFSX_HYPER)); 2771 uio_uio_resid_add(uiop, -(tlen + NFSX_HYPER)); 2772 uiop->uio_offset += (tlen + NFSX_HYPER); 2773 } else { 2774 error = nfsm_advance(nd, NFSM_RNDUP(len), -1); 2775 if (error) 2776 goto nfsmout; 2777 } 2778 if (nd->nd_flag & ND_NFSV4) { 2779 rderr = 0; 2780 nfsva.na_mntonfileno = 0xffffffff; 2781 error = nfsv4_loadattr(nd, NULL, &nfsva, NULL, 2782 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0, 2783 NULL, NULL, &rderr, p, cred); 2784 if (error) 2785 goto nfsmout; 2786 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2787 } else if (nd->nd_flag & ND_NFSV3) { 2788 NFSM_DISSECT(tl, u_int32_t *, 3*NFSX_UNSIGNED); 2789 ncookie.lval[0] = *tl++; 2790 ncookie.lval[1] = *tl++; 2791 } else { 2792 NFSM_DISSECT(tl, u_int32_t *, 2*NFSX_UNSIGNED); 2793 ncookie.lval[0] = 0; 2794 ncookie.lval[1] = *tl++; 2795 } 2796 if (bigenough) { 2797 if (nd->nd_flag & ND_NFSV4) { 2798 if (rderr) { 2799 dp->d_fileno = 0; 2800 } else { 2801 if (gotmnton) { 2802 if (nfsva.na_mntonfileno != 0xffffffff) 2803 dp->d_fileno = nfsva.na_mntonfileno; 2804 else 2805 dp->d_fileno = nfsva.na_fileid; 2806 } else if (nfsva.na_filesid[0] == 2807 dnp->n_vattr.na_filesid[0] && 2808 nfsva.na_filesid[1] == 2809 dnp->n_vattr.na_filesid[1]) { 2810 dp->d_fileno = nfsva.na_fileid; 2811 } else { 2812 do { 2813 fakefileno--; 2814 } while (fakefileno == 2815 nfsva.na_fileid); 2816 dp->d_fileno = fakefileno; 2817 } 2818 dp->d_type = vtonfs_dtype(nfsva.na_type); 2819 } 2820 } else { 2821 dp->d_fileno = nfsva.na_fileid; 2822 } 2823 *tl2++ = cookiep->nfsuquad[0] = cookie.lval[0] = 2824 ncookie.lval[0]; 2825 *tl2 = cookiep->nfsuquad[1] = cookie.lval[1] = 2826 ncookie.lval[1]; 2827 } 2828 more_dirs = fxdr_unsigned(int, *tl); 2829 } 2830 /* 2831 * If at end of rpc data, get the eof boolean 2832 */ 2833 if (!more_dirs) { 2834 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2835 eof = fxdr_unsigned(int, *tl); 2836 if (tryformoredirs) 2837 more_dirs = !eof; 2838 if (nd->nd_flag & ND_NFSV4) { 2839 error = nfscl_postop_attr(nd, nap, attrflagp, 2840 stuff); 2841 if (error) 2842 goto nfsmout; 2843 } 2844 } 2845 mbuf_freem(nd->nd_mrep); 2846 nd->nd_mrep = NULL; 2847 } 2848 /* 2849 * Fill last record, iff any, out to a multiple of DIRBLKSIZ 2850 * by increasing d_reclen for the last record. 2851 */ 2852 if (blksiz > 0) { 2853 left = DIRBLKSIZ - blksiz; 2854 dp->d_reclen += left; 2855 uio_iov_base_add(uiop, left); 2856 uio_iov_len_add(uiop, -(left)); 2857 uio_uio_resid_add(uiop, -(left)); 2858 uiop->uio_offset += left; 2859 } 2860 2861 /* 2862 * If returning no data, assume end of file. 2863 * If not bigenough, return not end of file, since you aren't 2864 * returning all the data 2865 * Otherwise, return the eof flag from the server. 2866 */ 2867 if (eofp) { 2868 if (tresid == ((size_t)(uio_uio_resid(uiop)))) 2869 *eofp = 1; 2870 else if (!bigenough) 2871 *eofp = 0; 2872 else 2873 *eofp = eof; 2874 } 2875 2876 /* 2877 * Add extra empty records to any remaining DIRBLKSIZ chunks. 2878 */ 2879 while (uio_uio_resid(uiop) > 0 && ((size_t)(uio_uio_resid(uiop))) != tresid) { 2880 dp = (struct dirent *) CAST_DOWN(caddr_t, uio_iov_base(uiop)); 2881 dp->d_type = DT_UNKNOWN; 2882 dp->d_fileno = 0; 2883 dp->d_namlen = 0; 2884 dp->d_name[0] = '\0'; 2885 tl = (u_int32_t *)&dp->d_name[4]; 2886 *tl++ = cookie.lval[0]; 2887 *tl = cookie.lval[1]; 2888 dp->d_reclen = DIRBLKSIZ; 2889 uio_iov_base_add(uiop, DIRBLKSIZ); 2890 uio_iov_len_add(uiop, -(DIRBLKSIZ)); 2891 uio_uio_resid_add(uiop, -(DIRBLKSIZ)); 2892 uiop->uio_offset += DIRBLKSIZ; 2893 } 2894 2895nfsmout: 2896 if (nd->nd_mrep != NULL) 2897 mbuf_freem(nd->nd_mrep); 2898 return (error); 2899} 2900 2901#ifndef APPLE 2902/* 2903 * NFS V3 readdir plus RPC. Used in place of nfsrpc_readdir(). 2904 * (Also used for NFS V4 when mount flag set.) 2905 * (ditto above w.r.t. multiple of DIRBLKSIZ, etc.) 2906 */ 2907APPLESTATIC int 2908nfsrpc_readdirplus(vnode_t vp, struct uio *uiop, nfsuint64 *cookiep, 2909 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, 2910 int *eofp, void *stuff) 2911{ 2912 int len, left; 2913 struct dirent *dp = NULL; 2914 u_int32_t *tl; 2915 vnode_t newvp = NULLVP; 2916 struct nfsrv_descript nfsd, *nd = &nfsd; 2917 struct nameidata nami, *ndp = &nami; 2918 struct componentname *cnp = &ndp->ni_cnd; 2919 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 2920 struct nfsnode *dnp = VTONFS(vp), *np; 2921 struct nfsvattr nfsva; 2922 struct nfsfh *nfhp; 2923 nfsquad_t cookie, ncookie; 2924 int error = 0, tlen, more_dirs = 1, blksiz = 0, bigenough = 1; 2925 int attrflag, tryformoredirs = 1, eof = 0, gotmnton = 0; 2926 int unlocknewvp = 0; 2927 long dotfileid, dotdotfileid = 0, fileno = 0; 2928 char *cp; 2929 nfsattrbit_t attrbits, dattrbits; 2930 size_t tresid; 2931 u_int32_t *tl2 = NULL, fakefileno = 0xffffffff, rderr; 2932 2933#ifdef DIAGNOSTIC 2934 if (uiop->uio_iovcnt != 1 || (uio_uio_resid(uiop) & (DIRBLKSIZ - 1))) 2935 panic("nfs readdirplusrpc bad uio"); 2936#endif 2937 *attrflagp = 0; 2938 if (eofp != NULL) 2939 *eofp = 0; 2940 ndp->ni_dvp = vp; 2941 nd->nd_mrep = NULL; 2942 cookie.lval[0] = cookiep->nfsuquad[0]; 2943 cookie.lval[1] = cookiep->nfsuquad[1]; 2944 tresid = uio_uio_resid(uiop); 2945 2946 /* 2947 * For NFSv4, first create the "." and ".." entries. 2948 */ 2949 if (NFSHASNFSV4(nmp)) { 2950 NFSGETATTR_ATTRBIT(&dattrbits); 2951 NFSZERO_ATTRBIT(&attrbits); 2952 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_FILEID); 2953 if (NFSISSET_ATTRBIT(&dnp->n_vattr.na_suppattr, 2954 NFSATTRBIT_MOUNTEDONFILEID)) { 2955 NFSSETBIT_ATTRBIT(&attrbits, 2956 NFSATTRBIT_MOUNTEDONFILEID); 2957 gotmnton = 1; 2958 } else { 2959 /* 2960 * Must fake it. Use the fileno, except when the 2961 * fsid is != to that of the directory. For that 2962 * case, generate a fake fileno that is not the same. 2963 */ 2964 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_FSID); 2965 gotmnton = 0; 2966 } 2967 2968 /* 2969 * Joy, oh joy. For V4 we get to hand craft '.' and '..'. 2970 */ 2971 if (uiop->uio_offset == 0) { 2972#if defined(__FreeBSD_version) && __FreeBSD_version >= 800000 2973 error = VOP_GETATTR(vp, &nfsva.na_vattr, cred); 2974#else 2975 error = VOP_GETATTR(vp, &nfsva.na_vattr, cred, p); 2976#endif 2977 if (error) 2978 return (error); 2979 dotfileid = nfsva.na_fileid; 2980 NFSCL_REQSTART(nd, NFSPROC_LOOKUPP, vp); 2981 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2982 *tl++ = txdr_unsigned(NFSV4OP_GETFH); 2983 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2984 (void) nfsrv_putattrbit(nd, &attrbits); 2985 error = nfscl_request(nd, vp, p, cred, stuff); 2986 if (error) 2987 return (error); 2988 if (nd->nd_repstat == 0) { 2989 NFSM_DISSECT(tl, u_int32_t *, 3*NFSX_UNSIGNED); 2990 len = fxdr_unsigned(int, *(tl + 2)); 2991 if (len > 0 && len <= NFSX_V4FHMAX) 2992 error = nfsm_advance(nd, NFSM_RNDUP(len), -1); 2993 else 2994 error = EPERM; 2995 if (!error) { 2996 NFSM_DISSECT(tl, u_int32_t *, 2*NFSX_UNSIGNED); 2997 nfsva.na_mntonfileno = 0xffffffff; 2998 error = nfsv4_loadattr(nd, NULL, &nfsva, NULL, 2999 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0, 3000 NULL, NULL, NULL, p, cred); 3001 if (error) { 3002 dotdotfileid = dotfileid; 3003 } else if (gotmnton) { 3004 if (nfsva.na_mntonfileno != 0xffffffff) 3005 dotdotfileid = nfsva.na_mntonfileno; 3006 else 3007 dotdotfileid = nfsva.na_fileid; 3008 } else if (nfsva.na_filesid[0] == 3009 dnp->n_vattr.na_filesid[0] && 3010 nfsva.na_filesid[1] == 3011 dnp->n_vattr.na_filesid[1]) { 3012 dotdotfileid = nfsva.na_fileid; 3013 } else { 3014 do { 3015 fakefileno--; 3016 } while (fakefileno == 3017 nfsva.na_fileid); 3018 dotdotfileid = fakefileno; 3019 } 3020 } 3021 } else if (nd->nd_repstat == NFSERR_NOENT) { 3022 /* 3023 * Lookupp returns NFSERR_NOENT when we are 3024 * at the root, so just use the current dir. 3025 */ 3026 nd->nd_repstat = 0; 3027 dotdotfileid = dotfileid; 3028 } else { 3029 error = nd->nd_repstat; 3030 } 3031 mbuf_freem(nd->nd_mrep); 3032 if (error) 3033 return (error); 3034 nd->nd_mrep = NULL; 3035 dp = (struct dirent *)uio_iov_base(uiop); 3036 dp->d_type = DT_DIR; 3037 dp->d_fileno = dotfileid; 3038 dp->d_namlen = 1; 3039 dp->d_name[0] = '.'; 3040 dp->d_name[1] = '\0'; 3041 dp->d_reclen = DIRENT_SIZE(dp) + NFSX_HYPER; 3042 /* 3043 * Just make these offset cookie 0. 3044 */ 3045 tl = (u_int32_t *)&dp->d_name[4]; 3046 *tl++ = 0; 3047 *tl = 0; 3048 blksiz += dp->d_reclen; 3049 uio_uio_resid_add(uiop, -(dp->d_reclen)); 3050 uiop->uio_offset += dp->d_reclen; 3051 uio_iov_base_add(uiop, dp->d_reclen); 3052 uio_iov_len_add(uiop, -(dp->d_reclen)); 3053 dp = (struct dirent *)uio_iov_base(uiop); 3054 dp->d_type = DT_DIR; 3055 dp->d_fileno = dotdotfileid; 3056 dp->d_namlen = 2; 3057 dp->d_name[0] = '.'; 3058 dp->d_name[1] = '.'; 3059 dp->d_name[2] = '\0'; 3060 dp->d_reclen = DIRENT_SIZE(dp) + NFSX_HYPER; 3061 /* 3062 * Just make these offset cookie 0. 3063 */ 3064 tl = (u_int32_t *)&dp->d_name[4]; 3065 *tl++ = 0; 3066 *tl = 0; 3067 blksiz += dp->d_reclen; 3068 uio_uio_resid_add(uiop, -(dp->d_reclen)); 3069 uiop->uio_offset += dp->d_reclen; 3070 uio_iov_base_add(uiop, dp->d_reclen); 3071 uio_iov_len_add(uiop, -(dp->d_reclen)); 3072 } 3073 NFSREADDIRPLUS_ATTRBIT(&attrbits); 3074 if (gotmnton) 3075 NFSSETBIT_ATTRBIT(&attrbits, 3076 NFSATTRBIT_MOUNTEDONFILEID); 3077 } 3078 3079 /* 3080 * Loop around doing readdir rpc's of size nm_readdirsize. 3081 * The stopping criteria is EOF or buffer full. 3082 */ 3083 while (more_dirs && bigenough) { 3084 *attrflagp = 0; 3085 NFSCL_REQSTART(nd, NFSPROC_READDIRPLUS, vp); 3086 NFSM_BUILD(tl, u_int32_t *, 6 * NFSX_UNSIGNED); 3087 *tl++ = cookie.lval[0]; 3088 *tl++ = cookie.lval[1]; 3089 if (cookie.qval == 0) { 3090 *tl++ = 0; 3091 *tl++ = 0; 3092 } else { 3093 NFSLOCKNODE(dnp); 3094 *tl++ = dnp->n_cookieverf.nfsuquad[0]; 3095 *tl++ = dnp->n_cookieverf.nfsuquad[1]; 3096 NFSUNLOCKNODE(dnp); 3097 } 3098 *tl++ = txdr_unsigned(nmp->nm_readdirsize); 3099 *tl = txdr_unsigned(nmp->nm_readdirsize); 3100 if (nd->nd_flag & ND_NFSV4) { 3101 (void) nfsrv_putattrbit(nd, &attrbits); 3102 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 3103 *tl = txdr_unsigned(NFSV4OP_GETATTR); 3104 (void) nfsrv_putattrbit(nd, &dattrbits); 3105 } 3106 error = nfscl_request(nd, vp, p, cred, stuff); 3107 if (error) 3108 return (error); 3109 if (nd->nd_flag & ND_NFSV3) 3110 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 3111 if (nd->nd_repstat || error) { 3112 if (!error) 3113 error = nd->nd_repstat; 3114 goto nfsmout; 3115 } 3116 NFSM_DISSECT(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 3117 NFSLOCKNODE(dnp); 3118 dnp->n_cookieverf.nfsuquad[0] = *tl++; 3119 dnp->n_cookieverf.nfsuquad[1] = *tl++; 3120 NFSUNLOCKNODE(dnp); 3121 more_dirs = fxdr_unsigned(int, *tl); 3122 if (!more_dirs) 3123 tryformoredirs = 0; 3124 3125 /* loop thru the dir entries, doctoring them to 4bsd form */ 3126 while (more_dirs && bigenough) { 3127 NFSM_DISSECT(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 3128 if (nd->nd_flag & ND_NFSV4) { 3129 ncookie.lval[0] = *tl++; 3130 ncookie.lval[1] = *tl++; 3131 } else { 3132 fileno = fxdr_unsigned(long, *++tl); 3133 tl++; 3134 } 3135 len = fxdr_unsigned(int, *tl); 3136 if (len <= 0 || len > NFS_MAXNAMLEN) { 3137 error = EBADRPC; 3138 goto nfsmout; 3139 } 3140 tlen = NFSM_RNDUP(len); 3141 if (tlen == len) 3142 tlen += 4; /* To ensure null termination */ 3143 left = DIRBLKSIZ - blksiz; 3144 if ((tlen + DIRHDSIZ + NFSX_HYPER) > left) { 3145 dp->d_reclen += left; 3146 uio_iov_base_add(uiop, left); 3147 uio_iov_len_add(uiop, -(left)); 3148 uio_uio_resid_add(uiop, -(left)); 3149 uiop->uio_offset += left; 3150 blksiz = 0; 3151 } 3152 if ((tlen + DIRHDSIZ + NFSX_HYPER) > uio_uio_resid(uiop)) 3153 bigenough = 0; 3154 if (bigenough) { 3155 dp = (struct dirent *)uio_iov_base(uiop); 3156 dp->d_namlen = len; 3157 dp->d_reclen = tlen + DIRHDSIZ + NFSX_HYPER; 3158 dp->d_type = DT_UNKNOWN; 3159 blksiz += dp->d_reclen; 3160 if (blksiz == DIRBLKSIZ) 3161 blksiz = 0; 3162 uio_uio_resid_add(uiop, -(DIRHDSIZ)); 3163 uiop->uio_offset += DIRHDSIZ; 3164 uio_iov_base_add(uiop, DIRHDSIZ); 3165 uio_iov_len_add(uiop, -(DIRHDSIZ)); 3166 cnp->cn_nameptr = uio_iov_base(uiop); 3167 cnp->cn_namelen = len; 3168 NFSCNHASHZERO(cnp); 3169 error = nfsm_mbufuio(nd, uiop, len); 3170 if (error) 3171 goto nfsmout; 3172 cp = uio_iov_base(uiop); 3173 tlen -= len; 3174 *cp = '\0'; 3175 cp += tlen; /* points to cookie storage */ 3176 tl2 = (u_int32_t *)cp; 3177 uio_iov_base_add(uiop, (tlen + NFSX_HYPER)); 3178 uio_iov_len_add(uiop, -(tlen + NFSX_HYPER)); 3179 uio_uio_resid_add(uiop, -(tlen + NFSX_HYPER)); 3180 uiop->uio_offset += (tlen + NFSX_HYPER); 3181 } else { 3182 error = nfsm_advance(nd, NFSM_RNDUP(len), -1); 3183 if (error) 3184 goto nfsmout; 3185 } 3186 nfhp = NULL; 3187 if (nd->nd_flag & ND_NFSV3) { 3188 NFSM_DISSECT(tl, u_int32_t *, 3*NFSX_UNSIGNED); 3189 ncookie.lval[0] = *tl++; 3190 ncookie.lval[1] = *tl++; 3191 attrflag = fxdr_unsigned(int, *tl); 3192 if (attrflag) { 3193 error = nfsm_loadattr(nd, &nfsva); 3194 if (error) 3195 goto nfsmout; 3196 } 3197 NFSM_DISSECT(tl,u_int32_t *,NFSX_UNSIGNED); 3198 if (*tl) { 3199 error = nfsm_getfh(nd, &nfhp); 3200 if (error) 3201 goto nfsmout; 3202 } 3203 if (!attrflag && nfhp != NULL) { 3204 FREE((caddr_t)nfhp, M_NFSFH); 3205 nfhp = NULL; 3206 } 3207 } else { 3208 rderr = 0; 3209 nfsva.na_mntonfileno = 0xffffffff; 3210 error = nfsv4_loadattr(nd, NULL, &nfsva, &nfhp, 3211 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0, 3212 NULL, NULL, &rderr, p, cred); 3213 if (error) 3214 goto nfsmout; 3215 } 3216 3217 if (bigenough) { 3218 if (nd->nd_flag & ND_NFSV4) { 3219 if (rderr) { 3220 dp->d_fileno = 0; 3221 } else if (gotmnton) { 3222 if (nfsva.na_mntonfileno != 0xffffffff) 3223 dp->d_fileno = nfsva.na_mntonfileno; 3224 else 3225 dp->d_fileno = nfsva.na_fileid; 3226 } else if (nfsva.na_filesid[0] == 3227 dnp->n_vattr.na_filesid[0] && 3228 nfsva.na_filesid[1] == 3229 dnp->n_vattr.na_filesid[1]) { 3230 dp->d_fileno = nfsva.na_fileid; 3231 } else { 3232 do { 3233 fakefileno--; 3234 } while (fakefileno == 3235 nfsva.na_fileid); 3236 dp->d_fileno = fakefileno; 3237 } 3238 } else { 3239 dp->d_fileno = fileno; 3240 } 3241 *tl2++ = cookiep->nfsuquad[0] = cookie.lval[0] = 3242 ncookie.lval[0]; 3243 *tl2 = cookiep->nfsuquad[1] = cookie.lval[1] = 3244 ncookie.lval[1]; 3245 3246 if (nfhp != NULL) { 3247 if (NFSRV_CMPFH(nfhp->nfh_fh, nfhp->nfh_len, 3248 dnp->n_fhp->nfh_fh, dnp->n_fhp->nfh_len)) { 3249 VREF(vp); 3250 newvp = vp; 3251 unlocknewvp = 0; 3252 FREE((caddr_t)nfhp, M_NFSFH); 3253 np = dnp; 3254 } else { 3255 error = nfscl_nget(vnode_mount(vp), vp, 3256 nfhp, cnp, p, &np, NULL); 3257 if (!error) { 3258 newvp = NFSTOV(np); 3259 unlocknewvp = 1; 3260 } 3261 } 3262 nfhp = NULL; 3263 if (newvp != NULLVP) { 3264 error = nfscl_loadattrcache(&newvp, 3265 &nfsva, NULL, NULL, 0, 0); 3266 if (error) { 3267 if (unlocknewvp) 3268 vput(newvp); 3269 else 3270 vrele(newvp); 3271 goto nfsmout; 3272 } 3273 dp->d_type = 3274 vtonfs_dtype(np->n_vattr.na_type); 3275 ndp->ni_vp = newvp; 3276 NFSCNHASH(cnp, HASHINIT); 3277 if (cnp->cn_namelen <= NCHNAMLEN) { 3278 np->n_ctime = 3279 np->n_vattr.na_ctime.tv_sec; 3280 cache_enter(ndp->ni_dvp,ndp->ni_vp,cnp); 3281 } 3282 if (unlocknewvp) 3283 vput(newvp); 3284 else 3285 vrele(newvp); 3286 newvp = NULLVP; 3287 } 3288 } 3289 } else if (nfhp != NULL) { 3290 FREE((caddr_t)nfhp, M_NFSFH); 3291 } 3292 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 3293 more_dirs = fxdr_unsigned(int, *tl); 3294 } 3295 /* 3296 * If at end of rpc data, get the eof boolean 3297 */ 3298 if (!more_dirs) { 3299 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 3300 eof = fxdr_unsigned(int, *tl); 3301 if (tryformoredirs) 3302 more_dirs = !eof; 3303 if (nd->nd_flag & ND_NFSV4) { 3304 error = nfscl_postop_attr(nd, nap, attrflagp, 3305 stuff); 3306 if (error) 3307 goto nfsmout; 3308 } 3309 } 3310 mbuf_freem(nd->nd_mrep); 3311 nd->nd_mrep = NULL; 3312 } 3313 /* 3314 * Fill last record, iff any, out to a multiple of DIRBLKSIZ 3315 * by increasing d_reclen for the last record. 3316 */ 3317 if (blksiz > 0) { 3318 left = DIRBLKSIZ - blksiz; 3319 dp->d_reclen += left; 3320 uio_iov_base_add(uiop, left); 3321 uio_iov_len_add(uiop, -(left)); 3322 uio_uio_resid_add(uiop, -(left)); 3323 uiop->uio_offset += left; 3324 } 3325 3326 /* 3327 * If returning no data, assume end of file. 3328 * If not bigenough, return not end of file, since you aren't 3329 * returning all the data 3330 * Otherwise, return the eof flag from the server. 3331 */ 3332 if (eofp != NULL) { 3333 if (tresid == uio_uio_resid(uiop)) 3334 *eofp = 1; 3335 else if (!bigenough) 3336 *eofp = 0; 3337 else 3338 *eofp = eof; 3339 } 3340 3341 /* 3342 * Add extra empty records to any remaining DIRBLKSIZ chunks. 3343 */ 3344 while (uio_uio_resid(uiop) > 0 && uio_uio_resid(uiop) != tresid) { 3345 dp = (struct dirent *)uio_iov_base(uiop); 3346 dp->d_type = DT_UNKNOWN; 3347 dp->d_fileno = 0; 3348 dp->d_namlen = 0; 3349 dp->d_name[0] = '\0'; 3350 tl = (u_int32_t *)&dp->d_name[4]; 3351 *tl++ = cookie.lval[0]; 3352 *tl = cookie.lval[1]; 3353 dp->d_reclen = DIRBLKSIZ; 3354 uio_iov_base_add(uiop, DIRBLKSIZ); 3355 uio_iov_len_add(uiop, -(DIRBLKSIZ)); 3356 uio_uio_resid_add(uiop, -(DIRBLKSIZ)); 3357 uiop->uio_offset += DIRBLKSIZ; 3358 } 3359 3360nfsmout: 3361 if (nd->nd_mrep != NULL) 3362 mbuf_freem(nd->nd_mrep); 3363 return (error); 3364} 3365#endif /* !APPLE */ 3366 3367/* 3368 * Nfs commit rpc 3369 */ 3370APPLESTATIC int 3371nfsrpc_commit(vnode_t vp, u_quad_t offset, int cnt, struct ucred *cred, 3372 NFSPROC_T *p, u_char *verfp, struct nfsvattr *nap, int *attrflagp, 3373 void *stuff) 3374{ 3375 u_int32_t *tl; 3376 struct nfsrv_descript nfsd, *nd = &nfsd; 3377 nfsattrbit_t attrbits; 3378 int error; 3379 3380 *attrflagp = 0; 3381 NFSCL_REQSTART(nd, NFSPROC_COMMIT, vp); 3382 NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 3383 txdr_hyper(offset, tl); 3384 tl += 2; 3385 *tl = txdr_unsigned(cnt); 3386 if (nd->nd_flag & ND_NFSV4) { 3387 /* 3388 * And do a Getattr op. 3389 */ 3390 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 3391 *tl = txdr_unsigned(NFSV4OP_GETATTR); 3392 NFSGETATTR_ATTRBIT(&attrbits); 3393 (void) nfsrv_putattrbit(nd, &attrbits); 3394 } 3395 error = nfscl_request(nd, vp, p, cred, stuff); 3396 if (error) 3397 return (error); 3398 error = nfscl_wcc_data(nd, vp, nap, attrflagp, NULL, stuff); 3399 if (!error && !nd->nd_repstat) { 3400 NFSM_DISSECT(tl, u_int32_t *, NFSX_VERF); 3401 NFSBCOPY((caddr_t)tl, verfp, NFSX_VERF); 3402 if (nd->nd_flag & ND_NFSV4) 3403 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 3404 } 3405nfsmout: 3406 if (!error && nd->nd_repstat) 3407 error = nd->nd_repstat; 3408 mbuf_freem(nd->nd_mrep); 3409 return (error); 3410} 3411 3412/* 3413 * NFS byte range lock rpc. 3414 * (Mostly just calls one of the three lower level RPC routines.) 3415 */ 3416APPLESTATIC int 3417nfsrpc_advlock(vnode_t vp, off_t size, int op, struct flock *fl, 3418 int reclaim, struct ucred *cred, NFSPROC_T *p) 3419{ 3420 struct nfscllockowner *lp; 3421 struct nfsclclient *clp; 3422 struct nfsfh *nfhp; 3423 struct nfsrv_descript nfsd, *nd = &nfsd; 3424 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 3425 u_int64_t off, len; 3426 off_t start, end; 3427 u_int32_t clidrev = 0; 3428 int error = 0, newone = 0, expireret = 0, retrycnt, donelocally; 3429 int callcnt, dorpc; 3430 3431 /* 3432 * Convert the flock structure into a start and end and do POSIX 3433 * bounds checking. 3434 */ 3435 switch (fl->l_whence) { 3436 case SEEK_SET: 3437 case SEEK_CUR: 3438 /* 3439 * Caller is responsible for adding any necessary offset 3440 * when SEEK_CUR is used. 3441 */ 3442 start = fl->l_start; 3443 off = fl->l_start; 3444 break; 3445 case SEEK_END: 3446 start = size + fl->l_start; 3447 off = size + fl->l_start; 3448 break; 3449 default: 3450 return (EINVAL); 3451 }; 3452 if (start < 0) 3453 return (EINVAL); 3454 if (fl->l_len != 0) { 3455 end = start + fl->l_len - 1; 3456 if (end < start) 3457 return (EINVAL); 3458 } 3459 3460 len = fl->l_len; 3461 if (len == 0) 3462 len = NFS64BITSSET; 3463 retrycnt = 0; 3464 do { 3465 nd->nd_repstat = 0; 3466 if (op == F_GETLK) { 3467 error = nfscl_getcl(vp, cred, p, &clp); 3468 if (error) 3469 return (error); 3470 error = nfscl_lockt(vp, clp, off, len, fl, p); 3471 if (!error) { 3472 clidrev = clp->nfsc_clientidrev; 3473 error = nfsrpc_lockt(nd, vp, clp, off, len, fl, cred, 3474 p); 3475 } else if (error == -1) { 3476 error = 0; 3477 } 3478 nfscl_clientrelease(clp); 3479 } else if (op == F_UNLCK && fl->l_type == F_UNLCK) { 3480 /* 3481 * We must loop around for all lockowner cases. 3482 */ 3483 callcnt = 0; 3484 error = nfscl_getcl(vp, cred, p, &clp); 3485 if (error) 3486 return (error); 3487 do { 3488 error = nfscl_relbytelock(vp, off, len, cred, p, callcnt, 3489 clp, &lp, &dorpc); 3490 /* 3491 * If it returns a NULL lp, we're done. 3492 */ 3493 if (lp == NULL) { 3494 if (callcnt == 0) 3495 nfscl_clientrelease(clp); 3496 else 3497 nfscl_releasealllocks(clp, vp, p); 3498 return (error); 3499 } 3500 if (nmp->nm_clp != NULL) 3501 clidrev = nmp->nm_clp->nfsc_clientidrev; 3502 else 3503 clidrev = 0; 3504 /* 3505 * If the server doesn't support Posix lock semantics, 3506 * only allow locks on the entire file, since it won't 3507 * handle overlapping byte ranges. 3508 * There might still be a problem when a lock 3509 * upgrade/downgrade (read<->write) occurs, since the 3510 * server "might" expect an unlock first? 3511 */ 3512 if (dorpc && (lp->nfsl_open->nfso_posixlock || 3513 (off == 0 && len == NFS64BITSSET))) { 3514 /* 3515 * Since the lock records will go away, we must 3516 * wait for grace and delay here. 3517 */ 3518 do { 3519 error = nfsrpc_locku(nd, nmp, lp, off, len, 3520 NFSV4LOCKT_READ, cred, p, 0); 3521 if ((nd->nd_repstat == NFSERR_GRACE || 3522 nd->nd_repstat == NFSERR_DELAY) && 3523 error == 0) 3524 (void) nfs_catnap(PZERO, "nfs_advlock"); 3525 } while ((nd->nd_repstat == NFSERR_GRACE || 3526 nd->nd_repstat == NFSERR_DELAY) && error == 0); 3527 } 3528 callcnt++; 3529 } while (error == 0 && nd->nd_repstat == 0); 3530 nfscl_releasealllocks(clp, vp, p); 3531 } else if (op == F_SETLK) { 3532 error = nfscl_getbytelock(vp, off, len, fl->l_type, cred, p, 3533 NULL, 0, NULL, NULL, &lp, &newone, &donelocally); 3534 if (error || donelocally) { 3535 return (error); 3536 } 3537 if (nmp->nm_clp != NULL) 3538 clidrev = nmp->nm_clp->nfsc_clientidrev; 3539 else 3540 clidrev = 0; 3541 nfhp = VTONFS(vp)->n_fhp; 3542 if (!lp->nfsl_open->nfso_posixlock && 3543 (off != 0 || len != NFS64BITSSET)) { 3544 error = EINVAL; 3545 } else { 3546 error = nfsrpc_lock(nd, nmp, vp, nfhp->nfh_fh, 3547 nfhp->nfh_len, lp, newone, reclaim, off, 3548 len, fl->l_type, cred, p, 0); 3549 } 3550 if (!error) 3551 error = nd->nd_repstat; 3552 nfscl_lockrelease(lp, error, newone); 3553 } else { 3554 error = EINVAL; 3555 } 3556 if (!error) 3557 error = nd->nd_repstat; 3558 if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 3559 error == NFSERR_STALEDONTRECOVER || 3560 error == NFSERR_STALECLIENTID || error == NFSERR_DELAY) { 3561 (void) nfs_catnap(PZERO, "nfs_advlock"); 3562 } else if ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) 3563 && clidrev != 0) { 3564 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p); 3565 retrycnt++; 3566 } 3567 } while (error == NFSERR_GRACE || 3568 error == NFSERR_STALECLIENTID || error == NFSERR_DELAY || 3569 error == NFSERR_STALEDONTRECOVER || error == NFSERR_STALESTATEID || 3570 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) && 3571 expireret == 0 && clidrev != 0 && retrycnt < 4)); 3572 if (error && retrycnt >= 4) 3573 error = EIO; 3574 return (error); 3575} 3576 3577/* 3578 * The lower level routine for the LockT case. 3579 */ 3580APPLESTATIC int 3581nfsrpc_lockt(struct nfsrv_descript *nd, vnode_t vp, 3582 struct nfsclclient *clp, u_int64_t off, u_int64_t len, struct flock *fl, 3583 struct ucred *cred, NFSPROC_T *p) 3584{ 3585 u_int32_t *tl; 3586 int error, type, size; 3587 u_int8_t own[NFSV4CL_LOCKNAMELEN]; 3588 3589 NFSCL_REQSTART(nd, NFSPROC_LOCKT, vp); 3590 NFSM_BUILD(tl, u_int32_t *, 7 * NFSX_UNSIGNED); 3591 if (fl->l_type == F_RDLCK) 3592 *tl++ = txdr_unsigned(NFSV4LOCKT_READ); 3593 else 3594 *tl++ = txdr_unsigned(NFSV4LOCKT_WRITE); 3595 txdr_hyper(off, tl); 3596 tl += 2; 3597 txdr_hyper(len, tl); 3598 tl += 2; 3599 *tl++ = clp->nfsc_clientid.lval[0]; 3600 *tl = clp->nfsc_clientid.lval[1]; 3601 nfscl_filllockowner(p, own); 3602 (void) nfsm_strtom(nd, own, NFSV4CL_LOCKNAMELEN); 3603 error = nfscl_request(nd, vp, p, cred, NULL); 3604 if (error) 3605 return (error); 3606 if (nd->nd_repstat == 0) { 3607 fl->l_type = F_UNLCK; 3608 } else if (nd->nd_repstat == NFSERR_DENIED) { 3609 nd->nd_repstat = 0; 3610 fl->l_whence = SEEK_SET; 3611 NFSM_DISSECT(tl, u_int32_t *, 8 * NFSX_UNSIGNED); 3612 fl->l_start = fxdr_hyper(tl); 3613 tl += 2; 3614 len = fxdr_hyper(tl); 3615 tl += 2; 3616 if (len == NFS64BITSSET) 3617 fl->l_len = 0; 3618 else 3619 fl->l_len = len; 3620 type = fxdr_unsigned(int, *tl++); 3621 if (type == NFSV4LOCKT_WRITE) 3622 fl->l_type = F_WRLCK; 3623 else 3624 fl->l_type = F_RDLCK; 3625 /* 3626 * XXX For now, I have no idea what to do with the 3627 * conflicting lock_owner, so I'll just set the pid == 0 3628 * and skip over the lock_owner. 3629 */ 3630 fl->l_pid = (pid_t)0; 3631 tl += 2; 3632 size = fxdr_unsigned(int, *tl); 3633 if (size < 0 || size > NFSV4_OPAQUELIMIT) 3634 error = EBADRPC; 3635 if (!error) 3636 error = nfsm_advance(nd, NFSM_RNDUP(size), -1); 3637 } else if (nd->nd_repstat == NFSERR_STALECLIENTID) 3638 nfscl_initiate_recovery(clp); 3639nfsmout: 3640 mbuf_freem(nd->nd_mrep); 3641 return (error); 3642} 3643 3644/* 3645 * Lower level function that performs the LockU RPC. 3646 */ 3647static int 3648nfsrpc_locku(struct nfsrv_descript *nd, struct nfsmount *nmp, 3649 struct nfscllockowner *lp, u_int64_t off, u_int64_t len, 3650 u_int32_t type, struct ucred *cred, NFSPROC_T *p, int syscred) 3651{ 3652 u_int32_t *tl; 3653 int error; 3654 3655 nfscl_reqstart(nd, NFSPROC_LOCKU, nmp, lp->nfsl_open->nfso_fh, 3656 lp->nfsl_open->nfso_fhlen, NULL); 3657 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID + 6 * NFSX_UNSIGNED); 3658 *tl++ = txdr_unsigned(type); 3659 *tl = txdr_unsigned(lp->nfsl_seqid); 3660 if (nfstest_outofseq && 3661 (arc4random() % nfstest_outofseq) == 0) 3662 *tl = txdr_unsigned(lp->nfsl_seqid + 1); 3663 tl++; 3664 *tl++ = lp->nfsl_stateid.seqid; 3665 *tl++ = lp->nfsl_stateid.other[0]; 3666 *tl++ = lp->nfsl_stateid.other[1]; 3667 *tl++ = lp->nfsl_stateid.other[2]; 3668 txdr_hyper(off, tl); 3669 tl += 2; 3670 txdr_hyper(len, tl); 3671 if (syscred) 3672 nd->nd_flag |= ND_USEGSSNAME; 3673 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 3674 NFS_PROG, NFS_VER4, NULL, 1, NULL); 3675 NFSCL_INCRSEQID(lp->nfsl_seqid, nd); 3676 if (error) 3677 return (error); 3678 if (nd->nd_repstat == 0) { 3679 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID); 3680 lp->nfsl_stateid.seqid = *tl++; 3681 lp->nfsl_stateid.other[0] = *tl++; 3682 lp->nfsl_stateid.other[1] = *tl++; 3683 lp->nfsl_stateid.other[2] = *tl; 3684 } else if (nd->nd_repstat == NFSERR_STALESTATEID) 3685 nfscl_initiate_recovery(lp->nfsl_open->nfso_own->nfsow_clp); 3686nfsmout: 3687 mbuf_freem(nd->nd_mrep); 3688 return (error); 3689} 3690 3691/* 3692 * The actual Lock RPC. 3693 */ 3694APPLESTATIC int 3695nfsrpc_lock(struct nfsrv_descript *nd, struct nfsmount *nmp, vnode_t vp, 3696 u_int8_t *nfhp, int fhlen, struct nfscllockowner *lp, int newone, 3697 int reclaim, u_int64_t off, u_int64_t len, short type, struct ucred *cred, 3698 NFSPROC_T *p, int syscred) 3699{ 3700 u_int32_t *tl; 3701 int error, size; 3702 3703 nfscl_reqstart(nd, NFSPROC_LOCK, nmp, nfhp, fhlen, NULL); 3704 NFSM_BUILD(tl, u_int32_t *, 7 * NFSX_UNSIGNED); 3705 if (type == F_RDLCK) 3706 *tl++ = txdr_unsigned(NFSV4LOCKT_READ); 3707 else 3708 *tl++ = txdr_unsigned(NFSV4LOCKT_WRITE); 3709 *tl++ = txdr_unsigned(reclaim); 3710 txdr_hyper(off, tl); 3711 tl += 2; 3712 txdr_hyper(len, tl); 3713 tl += 2; 3714 if (newone) { 3715 *tl = newnfs_true; 3716 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID + 3717 2 * NFSX_UNSIGNED + NFSX_HYPER); 3718 *tl++ = txdr_unsigned(lp->nfsl_open->nfso_own->nfsow_seqid); 3719 *tl++ = lp->nfsl_open->nfso_stateid.seqid; 3720 *tl++ = lp->nfsl_open->nfso_stateid.other[0]; 3721 *tl++ = lp->nfsl_open->nfso_stateid.other[1]; 3722 *tl++ = lp->nfsl_open->nfso_stateid.other[2]; 3723 *tl++ = txdr_unsigned(lp->nfsl_seqid); 3724 *tl++ = lp->nfsl_open->nfso_own->nfsow_clp->nfsc_clientid.lval[0]; 3725 *tl = lp->nfsl_open->nfso_own->nfsow_clp->nfsc_clientid.lval[1]; 3726 (void) nfsm_strtom(nd, lp->nfsl_owner, NFSV4CL_LOCKNAMELEN); 3727 } else { 3728 *tl = newnfs_false; 3729 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID + NFSX_UNSIGNED); 3730 *tl++ = lp->nfsl_stateid.seqid; 3731 *tl++ = lp->nfsl_stateid.other[0]; 3732 *tl++ = lp->nfsl_stateid.other[1]; 3733 *tl++ = lp->nfsl_stateid.other[2]; 3734 *tl = txdr_unsigned(lp->nfsl_seqid); 3735 if (nfstest_outofseq && 3736 (arc4random() % nfstest_outofseq) == 0) 3737 *tl = txdr_unsigned(lp->nfsl_seqid + 1); 3738 } 3739 if (syscred) 3740 nd->nd_flag |= ND_USEGSSNAME; 3741 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, vp, p, cred, 3742 NFS_PROG, NFS_VER4, NULL, 1, NULL); 3743 if (error) 3744 return (error); 3745 if (newone) 3746 NFSCL_INCRSEQID(lp->nfsl_open->nfso_own->nfsow_seqid, nd); 3747 NFSCL_INCRSEQID(lp->nfsl_seqid, nd); 3748 if (nd->nd_repstat == 0) { 3749 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID); 3750 lp->nfsl_stateid.seqid = *tl++; 3751 lp->nfsl_stateid.other[0] = *tl++; 3752 lp->nfsl_stateid.other[1] = *tl++; 3753 lp->nfsl_stateid.other[2] = *tl; 3754 } else if (nd->nd_repstat == NFSERR_DENIED) { 3755 NFSM_DISSECT(tl, u_int32_t *, 8 * NFSX_UNSIGNED); 3756 size = fxdr_unsigned(int, *(tl + 7)); 3757 if (size < 0 || size > NFSV4_OPAQUELIMIT) 3758 error = EBADRPC; 3759 if (!error) 3760 error = nfsm_advance(nd, NFSM_RNDUP(size), -1); 3761 } else if (nd->nd_repstat == NFSERR_STALESTATEID) 3762 nfscl_initiate_recovery(lp->nfsl_open->nfso_own->nfsow_clp); 3763nfsmout: 3764 mbuf_freem(nd->nd_mrep); 3765 return (error); 3766} 3767 3768/* 3769 * nfs statfs rpc 3770 * (always called with the vp for the mount point) 3771 */ 3772APPLESTATIC int 3773nfsrpc_statfs(vnode_t vp, struct nfsstatfs *sbp, struct nfsfsinfo *fsp, 3774 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, 3775 void *stuff) 3776{ 3777 u_int32_t *tl = NULL; 3778 struct nfsrv_descript nfsd, *nd = &nfsd; 3779 struct nfsmount *nmp; 3780 nfsattrbit_t attrbits; 3781 int error; 3782 3783 *attrflagp = 0; 3784 nmp = VFSTONFS(vnode_mount(vp)); 3785 if (NFSHASNFSV4(nmp)) { 3786 /* 3787 * For V4, you actually do a getattr. 3788 */ 3789 NFSCL_REQSTART(nd, NFSPROC_GETATTR, vp); 3790 NFSSTATFS_GETATTRBIT(&attrbits); 3791 (void) nfsrv_putattrbit(nd, &attrbits); 3792 nd->nd_flag |= ND_USEGSSNAME; 3793 error = nfscl_request(nd, vp, p, cred, stuff); 3794 if (error) 3795 return (error); 3796 if (nd->nd_repstat == 0) { 3797 error = nfsv4_loadattr(nd, NULL, nap, NULL, NULL, 0, 3798 NULL, NULL, sbp, fsp, NULL, 0, NULL, NULL, NULL, p, 3799 cred); 3800 if (!error) { 3801 nmp->nm_fsid[0] = nap->na_filesid[0]; 3802 nmp->nm_fsid[1] = nap->na_filesid[1]; 3803 NFSSETHASSETFSID(nmp); 3804 *attrflagp = 1; 3805 } 3806 } else { 3807 error = nd->nd_repstat; 3808 } 3809 if (error) 3810 goto nfsmout; 3811 } else { 3812 NFSCL_REQSTART(nd, NFSPROC_FSSTAT, vp); 3813 error = nfscl_request(nd, vp, p, cred, stuff); 3814 if (error) 3815 return (error); 3816 if (nd->nd_flag & ND_NFSV3) { 3817 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 3818 if (error) 3819 goto nfsmout; 3820 } 3821 if (nd->nd_repstat) { 3822 error = nd->nd_repstat; 3823 goto nfsmout; 3824 } 3825 NFSM_DISSECT(tl, u_int32_t *, 3826 NFSX_STATFS(nd->nd_flag & ND_NFSV3)); 3827 } 3828 if (NFSHASNFSV3(nmp)) { 3829 sbp->sf_tbytes = fxdr_hyper(tl); tl += 2; 3830 sbp->sf_fbytes = fxdr_hyper(tl); tl += 2; 3831 sbp->sf_abytes = fxdr_hyper(tl); tl += 2; 3832 sbp->sf_tfiles = fxdr_hyper(tl); tl += 2; 3833 sbp->sf_ffiles = fxdr_hyper(tl); tl += 2; 3834 sbp->sf_afiles = fxdr_hyper(tl); tl += 2; 3835 sbp->sf_invarsec = fxdr_unsigned(u_int32_t, *tl); 3836 } else if (NFSHASNFSV4(nmp) == 0) { 3837 sbp->sf_tsize = fxdr_unsigned(u_int32_t, *tl++); 3838 sbp->sf_bsize = fxdr_unsigned(u_int32_t, *tl++); 3839 sbp->sf_blocks = fxdr_unsigned(u_int32_t, *tl++); 3840 sbp->sf_bfree = fxdr_unsigned(u_int32_t, *tl++); 3841 sbp->sf_bavail = fxdr_unsigned(u_int32_t, *tl); 3842 } 3843nfsmout: 3844 mbuf_freem(nd->nd_mrep); 3845 return (error); 3846} 3847 3848/* 3849 * nfs pathconf rpc 3850 */ 3851APPLESTATIC int 3852nfsrpc_pathconf(vnode_t vp, struct nfsv3_pathconf *pc, 3853 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, 3854 void *stuff) 3855{ 3856 struct nfsrv_descript nfsd, *nd = &nfsd; 3857 struct nfsmount *nmp; 3858 u_int32_t *tl; 3859 nfsattrbit_t attrbits; 3860 int error; 3861 3862 *attrflagp = 0; 3863 nmp = VFSTONFS(vnode_mount(vp)); 3864 if (NFSHASNFSV4(nmp)) { 3865 /* 3866 * For V4, you actually do a getattr. 3867 */ 3868 NFSCL_REQSTART(nd, NFSPROC_GETATTR, vp); 3869 NFSPATHCONF_GETATTRBIT(&attrbits); 3870 (void) nfsrv_putattrbit(nd, &attrbits); 3871 nd->nd_flag |= ND_USEGSSNAME; 3872 error = nfscl_request(nd, vp, p, cred, stuff); 3873 if (error) 3874 return (error); 3875 if (nd->nd_repstat == 0) { 3876 error = nfsv4_loadattr(nd, NULL, nap, NULL, NULL, 0, 3877 pc, NULL, NULL, NULL, NULL, 0, NULL, NULL, NULL, p, 3878 cred); 3879 if (!error) 3880 *attrflagp = 1; 3881 } else { 3882 error = nd->nd_repstat; 3883 } 3884 } else { 3885 NFSCL_REQSTART(nd, NFSPROC_PATHCONF, vp); 3886 error = nfscl_request(nd, vp, p, cred, stuff); 3887 if (error) 3888 return (error); 3889 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 3890 if (nd->nd_repstat && !error) 3891 error = nd->nd_repstat; 3892 if (!error) { 3893 NFSM_DISSECT(tl, u_int32_t *, NFSX_V3PATHCONF); 3894 pc->pc_linkmax = fxdr_unsigned(u_int32_t, *tl++); 3895 pc->pc_namemax = fxdr_unsigned(u_int32_t, *tl++); 3896 pc->pc_notrunc = fxdr_unsigned(u_int32_t, *tl++); 3897 pc->pc_chownrestricted = 3898 fxdr_unsigned(u_int32_t, *tl++); 3899 pc->pc_caseinsensitive = 3900 fxdr_unsigned(u_int32_t, *tl++); 3901 pc->pc_casepreserving = fxdr_unsigned(u_int32_t, *tl); 3902 } 3903 } 3904nfsmout: 3905 mbuf_freem(nd->nd_mrep); 3906 return (error); 3907} 3908 3909/* 3910 * nfs version 3 fsinfo rpc call 3911 */ 3912APPLESTATIC int 3913nfsrpc_fsinfo(vnode_t vp, struct nfsfsinfo *fsp, struct ucred *cred, 3914 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff) 3915{ 3916 u_int32_t *tl; 3917 struct nfsrv_descript nfsd, *nd = &nfsd; 3918 int error; 3919 3920 *attrflagp = 0; 3921 NFSCL_REQSTART(nd, NFSPROC_FSINFO, vp); 3922 error = nfscl_request(nd, vp, p, cred, stuff); 3923 if (error) 3924 return (error); 3925 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 3926 if (nd->nd_repstat && !error) 3927 error = nd->nd_repstat; 3928 if (!error) { 3929 NFSM_DISSECT(tl, u_int32_t *, NFSX_V3FSINFO); 3930 fsp->fs_rtmax = fxdr_unsigned(u_int32_t, *tl++); 3931 fsp->fs_rtpref = fxdr_unsigned(u_int32_t, *tl++); 3932 fsp->fs_rtmult = fxdr_unsigned(u_int32_t, *tl++); 3933 fsp->fs_wtmax = fxdr_unsigned(u_int32_t, *tl++); 3934 fsp->fs_wtpref = fxdr_unsigned(u_int32_t, *tl++); 3935 fsp->fs_wtmult = fxdr_unsigned(u_int32_t, *tl++); 3936 fsp->fs_dtpref = fxdr_unsigned(u_int32_t, *tl++); 3937 fsp->fs_maxfilesize = fxdr_hyper(tl); 3938 tl += 2; 3939 fxdr_nfsv3time(tl, &fsp->fs_timedelta); 3940 tl += 2; 3941 fsp->fs_properties = fxdr_unsigned(u_int32_t, *tl); 3942 } 3943nfsmout: 3944 mbuf_freem(nd->nd_mrep); 3945 return (error); 3946} 3947 3948/* 3949 * This function performs the Renew RPC. 3950 */ 3951APPLESTATIC int 3952nfsrpc_renew(struct nfsclclient *clp, struct ucred *cred, NFSPROC_T *p) 3953{ 3954 u_int32_t *tl; 3955 struct nfsrv_descript nfsd; 3956 struct nfsrv_descript *nd = &nfsd; 3957 struct nfsmount *nmp; 3958 int error; 3959 3960 nmp = clp->nfsc_nmp; 3961 if (nmp == NULL) 3962 return (0); 3963 nfscl_reqstart(nd, NFSPROC_RENEW, nmp, NULL, 0, NULL); 3964 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 3965 *tl++ = clp->nfsc_clientid.lval[0]; 3966 *tl = clp->nfsc_clientid.lval[1]; 3967 nd->nd_flag |= ND_USEGSSNAME; 3968 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 3969 NFS_PROG, NFS_VER4, NULL, 1, NULL); 3970 if (error) 3971 return (error); 3972 error = nd->nd_repstat; 3973 mbuf_freem(nd->nd_mrep); 3974 return (error); 3975} 3976 3977/* 3978 * This function performs the Releaselockowner RPC. 3979 */ 3980APPLESTATIC int 3981nfsrpc_rellockown(struct nfsmount *nmp, struct nfscllockowner *lp, 3982 struct ucred *cred, NFSPROC_T *p) 3983{ 3984 struct nfsrv_descript nfsd, *nd = &nfsd; 3985 u_int32_t *tl; 3986 int error; 3987 3988 nfscl_reqstart(nd, NFSPROC_RELEASELCKOWN, nmp, NULL, 0, NULL); 3989 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 3990 *tl++ = nmp->nm_clp->nfsc_clientid.lval[0]; 3991 *tl = nmp->nm_clp->nfsc_clientid.lval[1]; 3992 (void) nfsm_strtom(nd, lp->nfsl_owner, NFSV4CL_LOCKNAMELEN); 3993 nd->nd_flag |= ND_USEGSSNAME; 3994 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 3995 NFS_PROG, NFS_VER4, NULL, 1, NULL); 3996 if (error) 3997 return (error); 3998 error = nd->nd_repstat; 3999 mbuf_freem(nd->nd_mrep); 4000 return (error); 4001} 4002 4003/* 4004 * This function performs the Compound to get the mount pt FH. 4005 */ 4006APPLESTATIC int 4007nfsrpc_getdirpath(struct nfsmount *nmp, u_char *dirpath, struct ucred *cred, 4008 NFSPROC_T *p) 4009{ 4010 u_int32_t *tl; 4011 struct nfsrv_descript nfsd; 4012 struct nfsrv_descript *nd = &nfsd; 4013 u_char *cp, *cp2; 4014 int error, cnt, len, setnil; 4015 u_int32_t *opcntp; 4016 4017 nfscl_reqstart(nd, NFSPROC_PUTROOTFH, nmp, NULL, 0, &opcntp); 4018 cp = dirpath; 4019 cnt = 0; 4020 do { 4021 setnil = 0; 4022 while (*cp == '/') 4023 cp++; 4024 cp2 = cp; 4025 while (*cp2 != '\0' && *cp2 != '/') 4026 cp2++; 4027 if (*cp2 == '/') { 4028 setnil = 1; 4029 *cp2 = '\0'; 4030 } 4031 if (cp2 != cp) { 4032 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 4033 *tl = txdr_unsigned(NFSV4OP_LOOKUP); 4034 nfsm_strtom(nd, cp, strlen(cp)); 4035 cnt++; 4036 } 4037 if (setnil) 4038 *cp2++ = '/'; 4039 cp = cp2; 4040 } while (*cp != '\0'); 4041 *opcntp = txdr_unsigned(2 + cnt); 4042 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 4043 *tl = txdr_unsigned(NFSV4OP_GETFH); 4044 nd->nd_flag |= ND_USEGSSNAME; 4045 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 4046 NFS_PROG, NFS_VER4, NULL, 1, NULL); 4047 if (error) 4048 return (error); 4049 if (nd->nd_repstat == 0) { 4050 NFSM_DISSECT(tl, u_int32_t *, (3 + 2 * cnt) * NFSX_UNSIGNED); 4051 tl += (2 + 2 * cnt); 4052 if ((len = fxdr_unsigned(int, *tl)) <= 0 || 4053 len > NFSX_FHMAX) { 4054 nd->nd_repstat = NFSERR_BADXDR; 4055 } else { 4056 nd->nd_repstat = nfsrv_mtostr(nd, nmp->nm_fh, len); 4057 if (nd->nd_repstat == 0) 4058 nmp->nm_fhsize = len; 4059 } 4060 } 4061 error = nd->nd_repstat; 4062nfsmout: 4063 mbuf_freem(nd->nd_mrep); 4064 return (error); 4065} 4066 4067/* 4068 * This function performs the Delegreturn RPC. 4069 */ 4070APPLESTATIC int 4071nfsrpc_delegreturn(struct nfscldeleg *dp, struct ucred *cred, 4072 struct nfsmount *nmp, NFSPROC_T *p, int syscred) 4073{ 4074 u_int32_t *tl; 4075 struct nfsrv_descript nfsd; 4076 struct nfsrv_descript *nd = &nfsd; 4077 int error; 4078 4079 nfscl_reqstart(nd, NFSPROC_DELEGRETURN, nmp, dp->nfsdl_fh, 4080 dp->nfsdl_fhlen, NULL); 4081 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID); 4082 *tl++ = dp->nfsdl_stateid.seqid; 4083 *tl++ = dp->nfsdl_stateid.other[0]; 4084 *tl++ = dp->nfsdl_stateid.other[1]; 4085 *tl = dp->nfsdl_stateid.other[2]; 4086 if (syscred) 4087 nd->nd_flag |= ND_USEGSSNAME; 4088 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 4089 NFS_PROG, NFS_VER4, NULL, 1, NULL); 4090 if (error) 4091 return (error); 4092 error = nd->nd_repstat; 4093 mbuf_freem(nd->nd_mrep); 4094 return (error); 4095} 4096 4097#ifdef NFS4_ACL_EXTATTR_NAME 4098/* 4099 * nfs getacl call. 4100 */ 4101APPLESTATIC int 4102nfsrpc_getacl(vnode_t vp, struct ucred *cred, NFSPROC_T *p, 4103 struct acl *aclp, void *stuff) 4104{ 4105 struct nfsrv_descript nfsd, *nd = &nfsd; 4106 int error; 4107 nfsattrbit_t attrbits; 4108 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 4109 4110 if (nfsrv_useacl == 0 || !NFSHASNFSV4(nmp)) 4111 return (EOPNOTSUPP); 4112 NFSCL_REQSTART(nd, NFSPROC_GETACL, vp); 4113 NFSZERO_ATTRBIT(&attrbits); 4114 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_ACL); 4115 (void) nfsrv_putattrbit(nd, &attrbits); 4116 error = nfscl_request(nd, vp, p, cred, stuff); 4117 if (error) 4118 return (error); 4119 if (!nd->nd_repstat) 4120 error = nfsv4_loadattr(nd, vp, NULL, NULL, NULL, 0, NULL, 4121 NULL, NULL, NULL, aclp, 0, NULL, NULL, NULL, p, cred); 4122 else 4123 error = nd->nd_repstat; 4124 mbuf_freem(nd->nd_mrep); 4125 return (error); 4126} 4127 4128/* 4129 * nfs setacl call. 4130 */ 4131APPLESTATIC int 4132nfsrpc_setacl(vnode_t vp, struct ucred *cred, NFSPROC_T *p, 4133 struct acl *aclp, void *stuff) 4134{ 4135 int error; 4136 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 4137 4138 if (nfsrv_useacl == 0 || !NFSHASNFSV4(nmp)) 4139 return (EOPNOTSUPP); 4140 error = nfsrpc_setattr(vp, NULL, aclp, cred, p, NULL, NULL, stuff); 4141 return (error); 4142} 4143 4144/* 4145 * nfs setacl call. 4146 */ 4147static int 4148nfsrpc_setaclrpc(vnode_t vp, struct ucred *cred, NFSPROC_T *p, 4149 struct acl *aclp, nfsv4stateid_t *stateidp, void *stuff) 4150{ 4151 struct nfsrv_descript nfsd, *nd = &nfsd; 4152 int error; 4153 nfsattrbit_t attrbits; 4154 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 4155 4156 if (!NFSHASNFSV4(nmp)) 4157 return (EOPNOTSUPP); 4158 NFSCL_REQSTART(nd, NFSPROC_SETACL, vp); 4159 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID); 4160 NFSZERO_ATTRBIT(&attrbits); 4161 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_ACL); 4162 (void) nfsv4_fillattr(nd, vp, aclp, NULL, NULL, 0, &attrbits, 4163 NULL, NULL, 0, 0); 4164 error = nfscl_request(nd, vp, p, cred, stuff); 4165 if (error) 4166 return (error); 4167 /* Don't care about the pre/postop attributes */ 4168 mbuf_freem(nd->nd_mrep); 4169 return (nd->nd_repstat); 4170} 4171 4172#endif /* NFS4_ACL_EXTATTR_NAME */ 4173