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sys/fs/nfsclient/nfs_clrpcops.c
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1 /*- 2 * Copyright (c) 1989, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley by 6 * Rick Macklem at The University of Guelph. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 4. Neither the name of the University nor the names of its contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 * 32 */ 33 34 #include <sys/cdefs.h> 35 __FBSDID("$FreeBSD$"); 36 37 /* 38 * Rpc op calls, generally called from the vnode op calls or through the 39 * buffer cache, for NFS v2, 3 and 4. 40 * These do not normally make any changes to vnode arguments or use 41 * structures that might change between the VFS variants. The returned 42 * arguments are all at the end, after the NFSPROC_T *p one. 43 */ 44 45 #ifndef APPLEKEXT 46 #include "opt_inet6.h" 47 48 #include <fs/nfs/nfsport.h> 49 50 /* 51 * Global variables 52 */ 53 extern int nfs_numnfscbd; 54 extern struct timeval nfsboottime; 55 extern u_int32_t newnfs_false, newnfs_true; 56 extern nfstype nfsv34_type[9]; 57 extern int nfsrv_useacl; 58 extern char nfsv4_callbackaddr[INET6_ADDRSTRLEN]; 59 extern int nfscl_debuglevel; 60 NFSCLSTATEMUTEX; 61 int nfstest_outofseq = 0; 62 int nfscl_assumeposixlocks = 1; 63 int nfscl_enablecallb = 0; 64 short nfsv4_cbport = NFSV4_CBPORT; 65 int nfstest_openallsetattr = 0; 66 #endif /* !APPLEKEXT */ 67 68 #define DIRHDSIZ (sizeof (struct dirent) - (MAXNAMLEN + 1)) 69 70 static int nfsrpc_setattrrpc(vnode_t , struct vattr *, nfsv4stateid_t *, 71 struct ucred *, NFSPROC_T *, struct nfsvattr *, int *, void *); 72 static int nfsrpc_readrpc(vnode_t , struct uio *, struct ucred *, 73 nfsv4stateid_t *, NFSPROC_T *, struct nfsvattr *, int *, void *); 74 static int nfsrpc_writerpc(vnode_t , struct uio *, int *, int *, 75 struct ucred *, nfsv4stateid_t *, NFSPROC_T *, struct nfsvattr *, int *, 76 void *); 77 static int nfsrpc_createv23(vnode_t , char *, int, struct vattr *, 78 nfsquad_t, int, struct ucred *, NFSPROC_T *, struct nfsvattr *, 79 struct nfsvattr *, struct nfsfh **, int *, int *, void *); 80 static int nfsrpc_createv4(vnode_t , char *, int, struct vattr *, 81 nfsquad_t, int, struct nfsclowner *, struct nfscldeleg **, struct ucred *, 82 NFSPROC_T *, struct nfsvattr *, struct nfsvattr *, struct nfsfh **, int *, 83 int *, void *, int *); 84 static int nfsrpc_locku(struct nfsrv_descript *, struct nfsmount *, 85 struct nfscllockowner *, u_int64_t, u_int64_t, 86 u_int32_t, struct ucred *, NFSPROC_T *, int); 87 static int nfsrpc_setaclrpc(vnode_t, struct ucred *, NFSPROC_T *, 88 struct acl *, nfsv4stateid_t *, void *); 89 90 /* 91 * nfs null call from vfs. 92 */ 93 APPLESTATIC int 94 nfsrpc_null(vnode_t vp, struct ucred *cred, NFSPROC_T *p) 95 { 96 int error; 97 struct nfsrv_descript nfsd, *nd = &nfsd; 98 99 NFSCL_REQSTART(nd, NFSPROC_NULL, vp); 100 error = nfscl_request(nd, vp, p, cred, NULL); 101 if (nd->nd_repstat && !error) 102 error = nd->nd_repstat; 103 mbuf_freem(nd->nd_mrep); 104 return (error); 105 } 106 107 /* 108 * nfs access rpc op. 109 * For nfs version 3 and 4, use the access rpc to check accessibility. If file 110 * modes are changed on the server, accesses might still fail later. 111 */ 112 APPLESTATIC int 113 nfsrpc_access(vnode_t vp, int acmode, struct ucred *cred, 114 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp) 115 { 116 int error; 117 u_int32_t mode, rmode; 118 119 if (acmode & VREAD) 120 mode = NFSACCESS_READ; 121 else 122 mode = 0; 123 if (vnode_vtype(vp) == VDIR) { 124 if (acmode & VWRITE) 125 mode |= (NFSACCESS_MODIFY | NFSACCESS_EXTEND | 126 NFSACCESS_DELETE); 127 if (acmode & VEXEC) 128 mode |= NFSACCESS_LOOKUP; 129 } else { 130 if (acmode & VWRITE) 131 mode |= (NFSACCESS_MODIFY | NFSACCESS_EXTEND); 132 if (acmode & VEXEC) 133 mode |= NFSACCESS_EXECUTE; 134 } 135 136 /* 137 * Now, just call nfsrpc_accessrpc() to do the actual RPC. 138 */ 139 error = nfsrpc_accessrpc(vp, mode, cred, p, nap, attrflagp, &rmode, 140 NULL); 141 142 /* 143 * The NFS V3 spec does not clarify whether or not 144 * the returned access bits can be a superset of 145 * the ones requested, so... 146 */ 147 if (!error && (rmode & mode) != mode) 148 error = EACCES; 149 return (error); 150 } 151 152 /* 153 * The actual rpc, separated out for Darwin. 154 */ 155 APPLESTATIC int 156 nfsrpc_accessrpc(vnode_t vp, u_int32_t mode, struct ucred *cred, 157 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, u_int32_t *rmodep, 158 void *stuff) 159 { 160 u_int32_t *tl; 161 u_int32_t supported, rmode; 162 int error; 163 struct nfsrv_descript nfsd, *nd = &nfsd; 164 nfsattrbit_t attrbits; 165 166 *attrflagp = 0; 167 supported = mode; 168 NFSCL_REQSTART(nd, NFSPROC_ACCESS, vp); 169 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 170 *tl = txdr_unsigned(mode); 171 if (nd->nd_flag & ND_NFSV4) { 172 /* 173 * And do a Getattr op. 174 */ 175 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 176 *tl = txdr_unsigned(NFSV4OP_GETATTR); 177 NFSGETATTR_ATTRBIT(&attrbits); 178 (void) nfsrv_putattrbit(nd, &attrbits); 179 } 180 error = nfscl_request(nd, vp, p, cred, stuff); 181 if (error) 182 return (error); 183 if (nd->nd_flag & ND_NFSV3) { 184 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 185 if (error) 186 goto nfsmout; 187 } 188 if (!nd->nd_repstat) { 189 if (nd->nd_flag & ND_NFSV4) { 190 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 191 supported = fxdr_unsigned(u_int32_t, *tl++); 192 } else { 193 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 194 } 195 rmode = fxdr_unsigned(u_int32_t, *tl); 196 if (nd->nd_flag & ND_NFSV4) 197 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 198 199 /* 200 * It's not obvious what should be done about 201 * unsupported access modes. For now, be paranoid 202 * and clear the unsupported ones. 203 */ 204 rmode &= supported; 205 *rmodep = rmode; 206 } else 207 error = nd->nd_repstat; 208 nfsmout: 209 mbuf_freem(nd->nd_mrep); 210 return (error); 211 } 212 213 /* 214 * nfs open rpc 215 */ 216 APPLESTATIC int 217 nfsrpc_open(vnode_t vp, int amode, struct ucred *cred, NFSPROC_T *p) 218 { 219 struct nfsclopen *op; 220 struct nfscldeleg *dp; 221 struct nfsfh *nfhp; 222 struct nfsnode *np = VTONFS(vp); 223 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 224 u_int32_t mode, clidrev; 225 int ret, newone, error, expireret = 0, retrycnt; 226 227 /* 228 * For NFSv4, Open Ops are only done on Regular Files. 229 */ 230 if (vnode_vtype(vp) != VREG) 231 return (0); 232 mode = 0; 233 if (amode & FREAD) 234 mode |= NFSV4OPEN_ACCESSREAD; 235 if (amode & FWRITE) 236 mode |= NFSV4OPEN_ACCESSWRITE; 237 nfhp = np->n_fhp; 238 239 retrycnt = 0; 240 #ifdef notdef 241 { char name[100]; int namel; 242 namel = (np->n_v4->n4_namelen < 100) ? np->n_v4->n4_namelen : 99; 243 bcopy(NFS4NODENAME(np->n_v4), name, namel); 244 name[namel] = '\0'; 245 printf("rpcopen p=0x%x name=%s",p->p_pid,name); 246 if (nfhp->nfh_len > 0) printf(" fh=0x%x\n",nfhp->nfh_fh[12]); 247 else printf(" fhl=0\n"); 248 } 249 #endif 250 do { 251 dp = NULL; 252 error = nfscl_open(vp, nfhp->nfh_fh, nfhp->nfh_len, mode, 1, 253 cred, p, NULL, &op, &newone, &ret, 1); 254 if (error) { 255 return (error); 256 } 257 if (nmp->nm_clp != NULL) 258 clidrev = nmp->nm_clp->nfsc_clientidrev; 259 else 260 clidrev = 0; 261 if (ret == NFSCLOPEN_DOOPEN) { 262 if (np->n_v4 != NULL) { 263 error = nfsrpc_openrpc(nmp, vp, np->n_v4->n4_data, 264 np->n_v4->n4_fhlen, np->n_fhp->nfh_fh, 265 np->n_fhp->nfh_len, mode, op, 266 NFS4NODENAME(np->n_v4), np->n_v4->n4_namelen, &dp, 267 0, 0x0, cred, p, 0, 0); 268 if (dp != NULL) { 269 #ifdef APPLE 270 OSBitAndAtomic((int32_t)~NDELEGMOD, (UInt32 *)&np->n_flag); 271 #else 272 NFSLOCKNODE(np); 273 np->n_flag &= ~NDELEGMOD; 274 /* 275 * Invalidate the attribute cache, so that 276 * attributes that pre-date the issue of a 277 * delegation are not cached, since the 278 * cached attributes will remain valid while 279 * the delegation is held. 280 */ 281 NFSINVALATTRCACHE(np); 282 NFSUNLOCKNODE(np); 283 #endif 284 (void) nfscl_deleg(nmp->nm_mountp, 285 op->nfso_own->nfsow_clp, 286 nfhp->nfh_fh, nfhp->nfh_len, cred, p, &dp); 287 } 288 } else { 289 error = EIO; 290 } 291 newnfs_copyincred(cred, &op->nfso_cred); 292 } else if (ret == NFSCLOPEN_SETCRED) 293 /* 294 * This is a new local open on a delegation. It needs 295 * to have credentials so that an open can be done 296 * against the server during recovery. 297 */ 298 newnfs_copyincred(cred, &op->nfso_cred); 299 300 /* 301 * nfso_opencnt is the count of how many VOP_OPEN()s have 302 * been done on this Open successfully and a VOP_CLOSE() 303 * is expected for each of these. 304 * If error is non-zero, don't increment it, since the Open 305 * hasn't succeeded yet. 306 */ 307 if (!error) 308 op->nfso_opencnt++; 309 nfscl_openrelease(op, error, newone); 310 if (error == NFSERR_GRACE || error == NFSERR_STALECLIENTID || 311 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY) { 312 (void) nfs_catnap(PZERO, error, "nfs_open"); 313 } else if ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) 314 && clidrev != 0) { 315 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p); 316 retrycnt++; 317 } 318 } while (error == NFSERR_GRACE || error == NFSERR_STALECLIENTID || 319 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 320 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) && 321 expireret == 0 && clidrev != 0 && retrycnt < 4)); 322 if (error && retrycnt >= 4) 323 error = EIO; 324 return (error); 325 } 326 327 /* 328 * the actual open rpc 329 */ 330 APPLESTATIC int 331 nfsrpc_openrpc(struct nfsmount *nmp, vnode_t vp, u_int8_t *nfhp, int fhlen, 332 u_int8_t *newfhp, int newfhlen, u_int32_t mode, struct nfsclopen *op, 333 u_int8_t *name, int namelen, struct nfscldeleg **dpp, 334 int reclaim, u_int32_t delegtype, struct ucred *cred, NFSPROC_T *p, 335 int syscred, int recursed) 336 { 337 u_int32_t *tl; 338 struct nfsrv_descript nfsd, *nd = &nfsd; 339 struct nfscldeleg *dp, *ndp = NULL; 340 struct nfsvattr nfsva; 341 u_int32_t rflags, deleg; 342 nfsattrbit_t attrbits; 343 int error, ret, acesize, limitby; 344 345 dp = *dpp; 346 *dpp = NULL; 347 nfscl_reqstart(nd, NFSPROC_OPEN, nmp, nfhp, fhlen, NULL); 348 NFSM_BUILD(tl, u_int32_t *, 5 * NFSX_UNSIGNED); 349 *tl++ = txdr_unsigned(op->nfso_own->nfsow_seqid); 350 *tl++ = txdr_unsigned(mode & NFSV4OPEN_ACCESSBOTH); 351 *tl++ = txdr_unsigned((mode >> NFSLCK_SHIFT) & NFSV4OPEN_DENYBOTH); 352 *tl++ = op->nfso_own->nfsow_clp->nfsc_clientid.lval[0]; 353 *tl = op->nfso_own->nfsow_clp->nfsc_clientid.lval[1]; 354 (void) nfsm_strtom(nd, op->nfso_own->nfsow_owner, NFSV4CL_LOCKNAMELEN); 355 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 356 *tl++ = txdr_unsigned(NFSV4OPEN_NOCREATE); 357 if (reclaim) { 358 *tl = txdr_unsigned(NFSV4OPEN_CLAIMPREVIOUS); 359 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 360 *tl = txdr_unsigned(delegtype); 361 } else { 362 if (dp != NULL) { 363 *tl = txdr_unsigned(NFSV4OPEN_CLAIMDELEGATECUR); 364 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID); 365 *tl++ = dp->nfsdl_stateid.seqid; 366 *tl++ = dp->nfsdl_stateid.other[0]; 367 *tl++ = dp->nfsdl_stateid.other[1]; 368 *tl = dp->nfsdl_stateid.other[2]; 369 } else { 370 *tl = txdr_unsigned(NFSV4OPEN_CLAIMNULL); 371 } 372 (void) nfsm_strtom(nd, name, namelen); 373 } 374 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 375 *tl = txdr_unsigned(NFSV4OP_GETATTR); 376 NFSZERO_ATTRBIT(&attrbits); 377 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_CHANGE); 378 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_TIMEMODIFY); 379 (void) nfsrv_putattrbit(nd, &attrbits); 380 if (syscred) 381 nd->nd_flag |= ND_USEGSSNAME; 382 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, vp, p, cred, 383 NFS_PROG, NFS_VER4, NULL, 1, NULL); 384 if (error) 385 return (error); 386 NFSCL_INCRSEQID(op->nfso_own->nfsow_seqid, nd); 387 if (!nd->nd_repstat) { 388 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID + 389 6 * NFSX_UNSIGNED); 390 op->nfso_stateid.seqid = *tl++; 391 op->nfso_stateid.other[0] = *tl++; 392 op->nfso_stateid.other[1] = *tl++; 393 op->nfso_stateid.other[2] = *tl; 394 rflags = fxdr_unsigned(u_int32_t, *(tl + 6)); 395 error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL); 396 if (error) 397 goto nfsmout; 398 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 399 deleg = fxdr_unsigned(u_int32_t, *tl); 400 if (deleg == NFSV4OPEN_DELEGATEREAD || 401 deleg == NFSV4OPEN_DELEGATEWRITE) { 402 if (!(op->nfso_own->nfsow_clp->nfsc_flags & 403 NFSCLFLAGS_FIRSTDELEG)) 404 op->nfso_own->nfsow_clp->nfsc_flags |= 405 (NFSCLFLAGS_FIRSTDELEG | NFSCLFLAGS_GOTDELEG); 406 MALLOC(ndp, struct nfscldeleg *, 407 sizeof (struct nfscldeleg) + newfhlen, 408 M_NFSCLDELEG, M_WAITOK); 409 LIST_INIT(&ndp->nfsdl_owner); 410 LIST_INIT(&ndp->nfsdl_lock); 411 ndp->nfsdl_clp = op->nfso_own->nfsow_clp; 412 ndp->nfsdl_fhlen = newfhlen; 413 NFSBCOPY(newfhp, ndp->nfsdl_fh, newfhlen); 414 newnfs_copyincred(cred, &ndp->nfsdl_cred); 415 nfscl_lockinit(&ndp->nfsdl_rwlock); 416 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID + 417 NFSX_UNSIGNED); 418 ndp->nfsdl_stateid.seqid = *tl++; 419 ndp->nfsdl_stateid.other[0] = *tl++; 420 ndp->nfsdl_stateid.other[1] = *tl++; 421 ndp->nfsdl_stateid.other[2] = *tl++; 422 ret = fxdr_unsigned(int, *tl); 423 if (deleg == NFSV4OPEN_DELEGATEWRITE) { 424 ndp->nfsdl_flags = NFSCLDL_WRITE; 425 /* 426 * Indicates how much the file can grow. 427 */ 428 NFSM_DISSECT(tl, u_int32_t *, 429 3 * NFSX_UNSIGNED); 430 limitby = fxdr_unsigned(int, *tl++); 431 switch (limitby) { 432 case NFSV4OPEN_LIMITSIZE: 433 ndp->nfsdl_sizelimit = fxdr_hyper(tl); 434 break; 435 case NFSV4OPEN_LIMITBLOCKS: 436 ndp->nfsdl_sizelimit = 437 fxdr_unsigned(u_int64_t, *tl++); 438 ndp->nfsdl_sizelimit *= 439 fxdr_unsigned(u_int64_t, *tl); 440 break; 441 default: 442 error = NFSERR_BADXDR; 443 goto nfsmout; 444 }; 445 } else { 446 ndp->nfsdl_flags = NFSCLDL_READ; 447 } 448 if (ret) 449 ndp->nfsdl_flags |= NFSCLDL_RECALL; 450 error = nfsrv_dissectace(nd, &ndp->nfsdl_ace, &ret, 451 &acesize, p); 452 if (error) 453 goto nfsmout; 454 } else if (deleg != NFSV4OPEN_DELEGATENONE) { 455 error = NFSERR_BADXDR; 456 goto nfsmout; 457 } 458 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 459 error = nfsv4_loadattr(nd, NULL, &nfsva, NULL, 460 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0, 461 NULL, NULL, NULL, p, cred); 462 if (error) 463 goto nfsmout; 464 if (ndp != NULL) { 465 ndp->nfsdl_change = nfsva.na_filerev; 466 ndp->nfsdl_modtime = nfsva.na_mtime; 467 ndp->nfsdl_flags |= NFSCLDL_MODTIMESET; 468 } 469 if (!reclaim && (rflags & NFSV4OPEN_RESULTCONFIRM)) { 470 do { 471 ret = nfsrpc_openconfirm(vp, newfhp, newfhlen, op, 472 cred, p); 473 if (ret == NFSERR_DELAY) 474 (void) nfs_catnap(PZERO, ret, "nfs_open"); 475 } while (ret == NFSERR_DELAY); 476 error = ret; 477 } 478 if ((rflags & NFSV4OPEN_LOCKTYPEPOSIX) || 479 nfscl_assumeposixlocks) 480 op->nfso_posixlock = 1; 481 else 482 op->nfso_posixlock = 0; 483 484 /* 485 * If the server is handing out delegations, but we didn't 486 * get one because an OpenConfirm was required, try the 487 * Open again, to get a delegation. This is a harmless no-op, 488 * from a server's point of view. 489 */ 490 if (!reclaim && (rflags & NFSV4OPEN_RESULTCONFIRM) && 491 (op->nfso_own->nfsow_clp->nfsc_flags & NFSCLFLAGS_GOTDELEG) 492 && !error && dp == NULL && ndp == NULL && !recursed) { 493 do { 494 ret = nfsrpc_openrpc(nmp, vp, nfhp, fhlen, newfhp, 495 newfhlen, mode, op, name, namelen, &ndp, 0, 0x0, 496 cred, p, syscred, 1); 497 if (ret == NFSERR_DELAY) 498 (void) nfs_catnap(PZERO, ret, "nfs_open2"); 499 } while (ret == NFSERR_DELAY); 500 if (ret) { 501 if (ndp != NULL) 502 FREE((caddr_t)ndp, M_NFSCLDELEG); 503 if (ret == NFSERR_STALECLIENTID || 504 ret == NFSERR_STALEDONTRECOVER) 505 error = ret; 506 } 507 } 508 } 509 if (nd->nd_repstat != 0 && error == 0) 510 error = nd->nd_repstat; 511 if (error == NFSERR_STALECLIENTID) 512 nfscl_initiate_recovery(op->nfso_own->nfsow_clp); 513 nfsmout: 514 if (!error) 515 *dpp = ndp; 516 else if (ndp != NULL) 517 FREE((caddr_t)ndp, M_NFSCLDELEG); 518 mbuf_freem(nd->nd_mrep); 519 return (error); 520 } 521 522 /* 523 * open downgrade rpc 524 */ 525 APPLESTATIC int 526 nfsrpc_opendowngrade(vnode_t vp, u_int32_t mode, struct nfsclopen *op, 527 struct ucred *cred, NFSPROC_T *p) 528 { 529 u_int32_t *tl; 530 struct nfsrv_descript nfsd, *nd = &nfsd; 531 int error; 532 533 NFSCL_REQSTART(nd, NFSPROC_OPENDOWNGRADE, vp); 534 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID + 3 * NFSX_UNSIGNED); 535 *tl++ = op->nfso_stateid.seqid; 536 *tl++ = op->nfso_stateid.other[0]; 537 *tl++ = op->nfso_stateid.other[1]; 538 *tl++ = op->nfso_stateid.other[2]; 539 *tl++ = txdr_unsigned(op->nfso_own->nfsow_seqid); 540 *tl++ = txdr_unsigned(mode & NFSV4OPEN_ACCESSBOTH); 541 *tl = txdr_unsigned((mode >> NFSLCK_SHIFT) & NFSV4OPEN_DENYBOTH); 542 error = nfscl_request(nd, vp, p, cred, NULL); 543 if (error) 544 return (error); 545 NFSCL_INCRSEQID(op->nfso_own->nfsow_seqid, nd); 546 if (!nd->nd_repstat) { 547 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID); 548 op->nfso_stateid.seqid = *tl++; 549 op->nfso_stateid.other[0] = *tl++; 550 op->nfso_stateid.other[1] = *tl++; 551 op->nfso_stateid.other[2] = *tl; 552 } 553 if (nd->nd_repstat && error == 0) 554 error = nd->nd_repstat; 555 if (error == NFSERR_STALESTATEID) 556 nfscl_initiate_recovery(op->nfso_own->nfsow_clp); 557 nfsmout: 558 mbuf_freem(nd->nd_mrep); 559 return (error); 560 } 561 562 /* 563 * V4 Close operation. 564 */ 565 APPLESTATIC int 566 nfsrpc_close(vnode_t vp, int doclose, NFSPROC_T *p) 567 { 568 struct nfsclclient *clp; 569 int error; 570 571 if (vnode_vtype(vp) != VREG) 572 return (0); 573 if (doclose) 574 error = nfscl_doclose(vp, &clp, p); 575 else 576 error = nfscl_getclose(vp, &clp); 577 if (error) 578 return (error); 579 580 nfscl_clientrelease(clp); 581 return (0); 582 } 583 584 /* 585 * Close the open. 586 */ 587 APPLESTATIC void 588 nfsrpc_doclose(struct nfsmount *nmp, struct nfsclopen *op, NFSPROC_T *p) 589 { 590 struct nfsrv_descript nfsd, *nd = &nfsd; 591 struct nfscllockowner *lp, *nlp; 592 struct nfscllock *lop, *nlop; 593 struct ucred *tcred; 594 u_int64_t off = 0, len = 0; 595 u_int32_t type = NFSV4LOCKT_READ; 596 int error, do_unlock, trycnt; 597 598 tcred = newnfs_getcred(); 599 newnfs_copycred(&op->nfso_cred, tcred); 600 /* 601 * (Theoretically this could be done in the same 602 * compound as the close, but having multiple 603 * sequenced Ops in the same compound might be 604 * too scary for some servers.) 605 */ 606 if (op->nfso_posixlock) { 607 off = 0; 608 len = NFS64BITSSET; 609 type = NFSV4LOCKT_READ; 610 } 611 612 /* 613 * Since this function is only called from VOP_INACTIVE(), no 614 * other thread will be manipulating this Open. As such, the 615 * lock lists are not being changed by other threads, so it should 616 * be safe to do this without locking. 617 */ 618 LIST_FOREACH(lp, &op->nfso_lock, nfsl_list) { 619 do_unlock = 1; 620 LIST_FOREACH_SAFE(lop, &lp->nfsl_lock, nfslo_list, nlop) { 621 if (op->nfso_posixlock == 0) { 622 off = lop->nfslo_first; 623 len = lop->nfslo_end - lop->nfslo_first; 624 if (lop->nfslo_type == F_WRLCK) 625 type = NFSV4LOCKT_WRITE; 626 else 627 type = NFSV4LOCKT_READ; 628 } 629 if (do_unlock) { 630 trycnt = 0; 631 do { 632 error = nfsrpc_locku(nd, nmp, lp, off, 633 len, type, tcred, p, 0); 634 if ((nd->nd_repstat == NFSERR_GRACE || 635 nd->nd_repstat == NFSERR_DELAY) && 636 error == 0) 637 (void) nfs_catnap(PZERO, 638 (int)nd->nd_repstat, 639 "nfs_close"); 640 } while ((nd->nd_repstat == NFSERR_GRACE || 641 nd->nd_repstat == NFSERR_DELAY) && 642 error == 0 && trycnt++ < 5); 643 if (op->nfso_posixlock) 644 do_unlock = 0; 645 } 646 nfscl_freelock(lop, 0); 647 } 648 /* 649 * Do a ReleaseLockOwner. 650 * The lock owner name nfsl_owner may be used by other opens for 651 * other files but the lock_owner4 name that nfsrpc_rellockown() 652 * puts on the wire has the file handle for this file appended 653 * to it, so it can be done now. 654 */ 655 (void)nfsrpc_rellockown(nmp, lp, lp->nfsl_open->nfso_fh, 656 lp->nfsl_open->nfso_fhlen, tcred, p); 657 } 658 659 /* 660 * There could be other Opens for different files on the same 661 * OpenOwner, so locking is required. 662 */ 663 NFSLOCKCLSTATE(); 664 nfscl_lockexcl(&op->nfso_own->nfsow_rwlock, NFSCLSTATEMUTEXPTR); 665 NFSUNLOCKCLSTATE(); 666 do { 667 error = nfscl_tryclose(op, tcred, nmp, p); 668 if (error == NFSERR_GRACE) 669 (void) nfs_catnap(PZERO, error, "nfs_close"); 670 } while (error == NFSERR_GRACE); 671 NFSLOCKCLSTATE(); 672 nfscl_lockunlock(&op->nfso_own->nfsow_rwlock); 673 674 LIST_FOREACH_SAFE(lp, &op->nfso_lock, nfsl_list, nlp) 675 nfscl_freelockowner(lp, 0); 676 nfscl_freeopen(op, 0); 677 NFSUNLOCKCLSTATE(); 678 NFSFREECRED(tcred); 679 } 680 681 /* 682 * The actual Close RPC. 683 */ 684 APPLESTATIC int 685 nfsrpc_closerpc(struct nfsrv_descript *nd, struct nfsmount *nmp, 686 struct nfsclopen *op, struct ucred *cred, NFSPROC_T *p, 687 int syscred) 688 { 689 u_int32_t *tl; 690 int error; 691 692 nfscl_reqstart(nd, NFSPROC_CLOSE, nmp, op->nfso_fh, 693 op->nfso_fhlen, NULL); 694 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED + NFSX_STATEID); 695 *tl++ = txdr_unsigned(op->nfso_own->nfsow_seqid); 696 *tl++ = op->nfso_stateid.seqid; 697 *tl++ = op->nfso_stateid.other[0]; 698 *tl++ = op->nfso_stateid.other[1]; 699 *tl = op->nfso_stateid.other[2]; 700 if (syscred) 701 nd->nd_flag |= ND_USEGSSNAME; 702 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 703 NFS_PROG, NFS_VER4, NULL, 1, NULL); 704 if (error) 705 return (error); 706 NFSCL_INCRSEQID(op->nfso_own->nfsow_seqid, nd); 707 if (nd->nd_repstat == 0) 708 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID); 709 error = nd->nd_repstat; 710 if (error == NFSERR_STALESTATEID) 711 nfscl_initiate_recovery(op->nfso_own->nfsow_clp); 712 nfsmout: 713 mbuf_freem(nd->nd_mrep); 714 return (error); 715 } 716 717 /* 718 * V4 Open Confirm RPC. 719 */ 720 APPLESTATIC int 721 nfsrpc_openconfirm(vnode_t vp, u_int8_t *nfhp, int fhlen, 722 struct nfsclopen *op, struct ucred *cred, NFSPROC_T *p) 723 { 724 u_int32_t *tl; 725 struct nfsrv_descript nfsd, *nd = &nfsd; 726 int error; 727 728 nfscl_reqstart(nd, NFSPROC_OPENCONFIRM, VFSTONFS(vnode_mount(vp)), 729 nfhp, fhlen, NULL); 730 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED + NFSX_STATEID); 731 *tl++ = op->nfso_stateid.seqid; 732 *tl++ = op->nfso_stateid.other[0]; 733 *tl++ = op->nfso_stateid.other[1]; 734 *tl++ = op->nfso_stateid.other[2]; 735 *tl = txdr_unsigned(op->nfso_own->nfsow_seqid); 736 error = nfscl_request(nd, vp, p, cred, NULL); 737 if (error) 738 return (error); 739 NFSCL_INCRSEQID(op->nfso_own->nfsow_seqid, nd); 740 if (!nd->nd_repstat) { 741 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID); 742 op->nfso_stateid.seqid = *tl++; 743 op->nfso_stateid.other[0] = *tl++; 744 op->nfso_stateid.other[1] = *tl++; 745 op->nfso_stateid.other[2] = *tl; 746 } 747 error = nd->nd_repstat; 748 if (error == NFSERR_STALESTATEID) 749 nfscl_initiate_recovery(op->nfso_own->nfsow_clp); 750 nfsmout: 751 mbuf_freem(nd->nd_mrep); 752 return (error); 753 } 754 755 /* 756 * Do the setclientid and setclientid confirm RPCs. Called from nfs_statfs() 757 * when a mount has just occurred and when the server replies NFSERR_EXPIRED. 758 */ 759 APPLESTATIC int 760 nfsrpc_setclient(struct nfsmount *nmp, struct nfsclclient *clp, 761 struct ucred *cred, NFSPROC_T *p) 762 { 763 u_int32_t *tl; 764 struct nfsrv_descript nfsd; 765 struct nfsrv_descript *nd = &nfsd; 766 nfsattrbit_t attrbits; 767 u_int8_t *cp = NULL, *cp2, addr[INET6_ADDRSTRLEN + 9]; 768 u_short port; 769 int error, isinet6 = 0, callblen; 770 nfsquad_t confirm; 771 u_int32_t lease; 772 static u_int32_t rev = 0; 773 774 if (nfsboottime.tv_sec == 0) 775 NFSSETBOOTTIME(nfsboottime); 776 nfscl_reqstart(nd, NFSPROC_SETCLIENTID, nmp, NULL, 0, NULL); 777 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 778 *tl++ = txdr_unsigned(nfsboottime.tv_sec); 779 *tl = txdr_unsigned(rev++); 780 (void) nfsm_strtom(nd, clp->nfsc_id, clp->nfsc_idlen); 781 782 /* 783 * set up the callback address 784 */ 785 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 786 *tl = txdr_unsigned(NFS_CALLBCKPROG); 787 callblen = strlen(nfsv4_callbackaddr); 788 if (callblen == 0) 789 cp = nfscl_getmyip(nmp, &isinet6); 790 if (nfscl_enablecallb && nfs_numnfscbd > 0 && 791 (callblen > 0 || cp != NULL)) { 792 port = htons(nfsv4_cbport); 793 cp2 = (u_int8_t *)&port; 794 #ifdef INET6 795 if ((callblen > 0 && 796 strchr(nfsv4_callbackaddr, ':')) || isinet6) { 797 char ip6buf[INET6_ADDRSTRLEN], *ip6add; 798 799 (void) nfsm_strtom(nd, "tcp6", 4); 800 if (callblen == 0) { 801 ip6_sprintf(ip6buf, (struct in6_addr *)cp); 802 ip6add = ip6buf; 803 } else { 804 ip6add = nfsv4_callbackaddr; 805 } 806 snprintf(addr, INET6_ADDRSTRLEN + 9, "%s.%d.%d", 807 ip6add, cp2[0], cp2[1]); 808 } else 809 #endif 810 { 811 (void) nfsm_strtom(nd, "tcp", 3); 812 if (callblen == 0) 813 snprintf(addr, INET6_ADDRSTRLEN + 9, 814 "%d.%d.%d.%d.%d.%d", cp[0], cp[1], 815 cp[2], cp[3], cp2[0], cp2[1]); 816 else 817 snprintf(addr, INET6_ADDRSTRLEN + 9, 818 "%s.%d.%d", nfsv4_callbackaddr, 819 cp2[0], cp2[1]); 820 } 821 (void) nfsm_strtom(nd, addr, strlen(addr)); 822 } else { 823 (void) nfsm_strtom(nd, "tcp", 3); 824 (void) nfsm_strtom(nd, "0.0.0.0.0.0", 11); 825 } 826 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 827 *tl = txdr_unsigned(clp->nfsc_cbident); 828 nd->nd_flag |= ND_USEGSSNAME; 829 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 830 NFS_PROG, NFS_VER4, NULL, 1, NULL); 831 if (error) 832 return (error); 833 if (nd->nd_repstat == 0) { 834 NFSM_DISSECT(tl, u_int32_t *, 4 * NFSX_UNSIGNED); 835 clp->nfsc_clientid.lval[0] = *tl++; 836 clp->nfsc_clientid.lval[1] = *tl++; 837 confirm.lval[0] = *tl++; 838 confirm.lval[1] = *tl; 839 mbuf_freem(nd->nd_mrep); 840 nd->nd_mrep = NULL; 841 842 /* 843 * and confirm it. 844 */ 845 nfscl_reqstart(nd, NFSPROC_SETCLIENTIDCFRM, nmp, NULL, 0, NULL); 846 NFSM_BUILD(tl, u_int32_t *, 4 * NFSX_UNSIGNED); 847 *tl++ = clp->nfsc_clientid.lval[0]; 848 *tl++ = clp->nfsc_clientid.lval[1]; 849 *tl++ = confirm.lval[0]; 850 *tl = confirm.lval[1]; 851 nd->nd_flag |= ND_USEGSSNAME; 852 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, 853 cred, NFS_PROG, NFS_VER4, NULL, 1, NULL); 854 if (error) 855 return (error); 856 mbuf_freem(nd->nd_mrep); 857 nd->nd_mrep = NULL; 858 if (nd->nd_repstat == 0) { 859 nfscl_reqstart(nd, NFSPROC_GETATTR, nmp, nmp->nm_fh, 860 nmp->nm_fhsize, NULL); 861 NFSZERO_ATTRBIT(&attrbits); 862 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_LEASETIME); 863 (void) nfsrv_putattrbit(nd, &attrbits); 864 nd->nd_flag |= ND_USEGSSNAME; 865 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, 866 cred, NFS_PROG, NFS_VER4, NULL, 1, NULL); 867 if (error) 868 return (error); 869 if (nd->nd_repstat == 0) { 870 error = nfsv4_loadattr(nd, NULL, NULL, NULL, NULL, 0, NULL, 871 NULL, NULL, NULL, NULL, 0, NULL, &lease, NULL, p, cred); 872 if (error) 873 goto nfsmout; 874 clp->nfsc_renew = NFSCL_RENEW(lease); 875 clp->nfsc_expire = NFSD_MONOSEC + clp->nfsc_renew; 876 clp->nfsc_clientidrev++; 877 if (clp->nfsc_clientidrev == 0) 878 clp->nfsc_clientidrev++; 879 } 880 } 881 } 882 error = nd->nd_repstat; 883 nfsmout: 884 mbuf_freem(nd->nd_mrep); 885 return (error); 886 } 887 888 /* 889 * nfs getattr call. 890 */ 891 APPLESTATIC int 892 nfsrpc_getattr(vnode_t vp, struct ucred *cred, NFSPROC_T *p, 893 struct nfsvattr *nap, void *stuff) 894 { 895 struct nfsrv_descript nfsd, *nd = &nfsd; 896 int error; 897 nfsattrbit_t attrbits; 898 899 NFSCL_REQSTART(nd, NFSPROC_GETATTR, vp); 900 if (nd->nd_flag & ND_NFSV4) { 901 NFSGETATTR_ATTRBIT(&attrbits); 902 (void) nfsrv_putattrbit(nd, &attrbits); 903 } 904 error = nfscl_request(nd, vp, p, cred, stuff); 905 if (error) 906 return (error); 907 if (!nd->nd_repstat) 908 error = nfsm_loadattr(nd, nap); 909 else 910 error = nd->nd_repstat; 911 mbuf_freem(nd->nd_mrep); 912 return (error); 913 } 914 915 /* 916 * nfs getattr call with non-vnode arguemnts. 917 */ 918 APPLESTATIC int 919 nfsrpc_getattrnovp(struct nfsmount *nmp, u_int8_t *fhp, int fhlen, int syscred, 920 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, u_int64_t *xidp) 921 { 922 struct nfsrv_descript nfsd, *nd = &nfsd; 923 int error, vers = NFS_VER2; 924 nfsattrbit_t attrbits; 925 926 nfscl_reqstart(nd, NFSPROC_GETATTR, nmp, fhp, fhlen, NULL); 927 if (nd->nd_flag & ND_NFSV4) { 928 vers = NFS_VER4; 929 NFSGETATTR_ATTRBIT(&attrbits); 930 (void) nfsrv_putattrbit(nd, &attrbits); 931 } else if (nd->nd_flag & ND_NFSV3) { 932 vers = NFS_VER3; 933 } 934 if (syscred) 935 nd->nd_flag |= ND_USEGSSNAME; 936 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 937 NFS_PROG, vers, NULL, 1, xidp); 938 if (error) 939 return (error); 940 if (!nd->nd_repstat) 941 error = nfsm_loadattr(nd, nap); 942 else 943 error = nd->nd_repstat; 944 mbuf_freem(nd->nd_mrep); 945 return (error); 946 } 947 948 /* 949 * Do an nfs setattr operation. 950 */ 951 APPLESTATIC int 952 nfsrpc_setattr(vnode_t vp, struct vattr *vap, NFSACL_T *aclp, 953 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *rnap, int *attrflagp, 954 void *stuff) 955 { 956 int error, expireret = 0, openerr, retrycnt; 957 u_int32_t clidrev = 0, mode; 958 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 959 struct nfsfh *nfhp; 960 nfsv4stateid_t stateid; 961 void *lckp; 962 963 if (nmp->nm_clp != NULL) 964 clidrev = nmp->nm_clp->nfsc_clientidrev; 965 if (vap != NULL && NFSATTRISSET(u_quad_t, vap, va_size)) 966 mode = NFSV4OPEN_ACCESSWRITE; 967 else 968 mode = NFSV4OPEN_ACCESSREAD; 969 retrycnt = 0; 970 do { 971 lckp = NULL; 972 openerr = 1; 973 if (NFSHASNFSV4(nmp)) { 974 nfhp = VTONFS(vp)->n_fhp; 975 error = nfscl_getstateid(vp, nfhp->nfh_fh, 976 nfhp->nfh_len, mode, cred, p, &stateid, &lckp); 977 if (error && vnode_vtype(vp) == VREG && 978 (mode == NFSV4OPEN_ACCESSWRITE || 979 nfstest_openallsetattr)) { 980 /* 981 * No Open stateid, so try and open the file 982 * now. 983 */ 984 if (mode == NFSV4OPEN_ACCESSWRITE) 985 openerr = nfsrpc_open(vp, FWRITE, cred, 986 p); 987 else 988 openerr = nfsrpc_open(vp, FREAD, cred, 989 p); 990 if (!openerr) 991 (void) nfscl_getstateid(vp, 992 nfhp->nfh_fh, nfhp->nfh_len, 993 mode, cred, p, &stateid, &lckp); 994 } 995 } 996 if (vap != NULL) 997 error = nfsrpc_setattrrpc(vp, vap, &stateid, cred, p, 998 rnap, attrflagp, stuff); 999 else 1000 error = nfsrpc_setaclrpc(vp, cred, p, aclp, &stateid, 1001 stuff); 1002 if (error == NFSERR_STALESTATEID) 1003 nfscl_initiate_recovery(nmp->nm_clp); 1004 if (lckp != NULL) 1005 nfscl_lockderef(lckp); 1006 if (!openerr) 1007 (void) nfsrpc_close(vp, 0, p); 1008 if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 1009 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 1010 error == NFSERR_OLDSTATEID) { 1011 (void) nfs_catnap(PZERO, error, "nfs_setattr"); 1012 } else if ((error == NFSERR_EXPIRED || 1013 error == NFSERR_BADSTATEID) && clidrev != 0) { 1014 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p); 1015 } 1016 retrycnt++; 1017 } while (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 1018 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 1019 (error == NFSERR_OLDSTATEID && retrycnt < 20) || 1020 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) && 1021 expireret == 0 && clidrev != 0 && retrycnt < 4)); 1022 if (error && retrycnt >= 4) 1023 error = EIO; 1024 return (error); 1025 } 1026 1027 static int 1028 nfsrpc_setattrrpc(vnode_t vp, struct vattr *vap, 1029 nfsv4stateid_t *stateidp, struct ucred *cred, NFSPROC_T *p, 1030 struct nfsvattr *rnap, int *attrflagp, void *stuff) 1031 { 1032 u_int32_t *tl; 1033 struct nfsrv_descript nfsd, *nd = &nfsd; 1034 int error; 1035 nfsattrbit_t attrbits; 1036 1037 *attrflagp = 0; 1038 NFSCL_REQSTART(nd, NFSPROC_SETATTR, vp); 1039 if (nd->nd_flag & ND_NFSV4) 1040 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID); 1041 vap->va_type = vnode_vtype(vp); 1042 nfscl_fillsattr(nd, vap, vp, NFSSATTR_FULL, 0); 1043 if (nd->nd_flag & ND_NFSV3) { 1044 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1045 *tl = newnfs_false; 1046 } else if (nd->nd_flag & ND_NFSV4) { 1047 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1048 *tl = txdr_unsigned(NFSV4OP_GETATTR); 1049 NFSGETATTR_ATTRBIT(&attrbits); 1050 (void) nfsrv_putattrbit(nd, &attrbits); 1051 } 1052 error = nfscl_request(nd, vp, p, cred, stuff); 1053 if (error) 1054 return (error); 1055 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) 1056 error = nfscl_wcc_data(nd, vp, rnap, attrflagp, NULL, stuff); 1057 if ((nd->nd_flag & ND_NFSV4) && !error) 1058 error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL); 1059 if (!(nd->nd_flag & ND_NFSV3) && !nd->nd_repstat && !error) 1060 error = nfscl_postop_attr(nd, rnap, attrflagp, stuff); 1061 mbuf_freem(nd->nd_mrep); 1062 if (nd->nd_repstat && !error) 1063 error = nd->nd_repstat; 1064 return (error); 1065 } 1066 1067 /* 1068 * nfs lookup rpc 1069 */ 1070 APPLESTATIC int 1071 nfsrpc_lookup(vnode_t dvp, char *name, int len, struct ucred *cred, 1072 NFSPROC_T *p, struct nfsvattr *dnap, struct nfsvattr *nap, 1073 struct nfsfh **nfhpp, int *attrflagp, int *dattrflagp, void *stuff) 1074 { 1075 u_int32_t *tl; 1076 struct nfsrv_descript nfsd, *nd = &nfsd; 1077 struct nfsmount *nmp; 1078 struct nfsnode *np; 1079 struct nfsfh *nfhp; 1080 nfsattrbit_t attrbits; 1081 int error = 0, lookupp = 0; 1082 1083 *attrflagp = 0; 1084 *dattrflagp = 0; 1085 if (vnode_vtype(dvp) != VDIR) 1086 return (ENOTDIR); 1087 nmp = VFSTONFS(vnode_mount(dvp)); 1088 if (len > NFS_MAXNAMLEN) 1089 return (ENAMETOOLONG); 1090 if (NFSHASNFSV4(nmp) && len == 1 && 1091 name[0] == '.') { 1092 /* 1093 * Just return the current dir's fh. 1094 */ 1095 np = VTONFS(dvp); 1096 MALLOC(nfhp, struct nfsfh *, sizeof (struct nfsfh) + 1097 np->n_fhp->nfh_len, M_NFSFH, M_WAITOK); 1098 nfhp->nfh_len = np->n_fhp->nfh_len; 1099 NFSBCOPY(np->n_fhp->nfh_fh, nfhp->nfh_fh, nfhp->nfh_len); 1100 *nfhpp = nfhp; 1101 return (0); 1102 } 1103 if (NFSHASNFSV4(nmp) && len == 2 && 1104 name[0] == '.' && name[1] == '.') { 1105 lookupp = 1; 1106 NFSCL_REQSTART(nd, NFSPROC_LOOKUPP, dvp); 1107 } else { 1108 NFSCL_REQSTART(nd, NFSPROC_LOOKUP, dvp); 1109 (void) nfsm_strtom(nd, name, len); 1110 } 1111 if (nd->nd_flag & ND_NFSV4) { 1112 NFSGETATTR_ATTRBIT(&attrbits); 1113 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1114 *tl++ = txdr_unsigned(NFSV4OP_GETFH); 1115 *tl = txdr_unsigned(NFSV4OP_GETATTR); 1116 (void) nfsrv_putattrbit(nd, &attrbits); 1117 } 1118 error = nfscl_request(nd, dvp, p, cred, stuff); 1119 if (error) 1120 return (error); 1121 if (nd->nd_repstat) { 1122 /* 1123 * When an NFSv4 Lookupp returns ENOENT, it means that 1124 * the lookup is at the root of an fs, so return this dir. 1125 */ 1126 if (nd->nd_repstat == NFSERR_NOENT && lookupp) { 1127 np = VTONFS(dvp); 1128 MALLOC(nfhp, struct nfsfh *, sizeof (struct nfsfh) + 1129 np->n_fhp->nfh_len, M_NFSFH, M_WAITOK); 1130 nfhp->nfh_len = np->n_fhp->nfh_len; 1131 NFSBCOPY(np->n_fhp->nfh_fh, nfhp->nfh_fh, nfhp->nfh_len); 1132 *nfhpp = nfhp; 1133 mbuf_freem(nd->nd_mrep); 1134 return (0); 1135 } 1136 if (nd->nd_flag & ND_NFSV3) 1137 error = nfscl_postop_attr(nd, dnap, dattrflagp, stuff); 1138 else if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == 1139 ND_NFSV4) { 1140 /* Load the directory attributes. */ 1141 error = nfsm_loadattr(nd, dnap); 1142 if (error == 0) 1143 *dattrflagp = 1; 1144 } 1145 goto nfsmout; 1146 } 1147 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == ND_NFSV4) { 1148 /* Load the directory attributes. */ 1149 error = nfsm_loadattr(nd, dnap); 1150 if (error != 0) 1151 goto nfsmout; 1152 *dattrflagp = 1; 1153 /* Skip over the Lookup and GetFH operation status values. */ 1154 NFSM_DISSECT(tl, u_int32_t *, 4 * NFSX_UNSIGNED); 1155 } 1156 error = nfsm_getfh(nd, nfhpp); 1157 if (error) 1158 goto nfsmout; 1159 1160 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 1161 if ((nd->nd_flag & ND_NFSV3) && !error) 1162 error = nfscl_postop_attr(nd, dnap, dattrflagp, stuff); 1163 nfsmout: 1164 mbuf_freem(nd->nd_mrep); 1165 if (!error && nd->nd_repstat) 1166 error = nd->nd_repstat; 1167 return (error); 1168 } 1169 1170 /* 1171 * Do a readlink rpc. 1172 */ 1173 APPLESTATIC int 1174 nfsrpc_readlink(vnode_t vp, struct uio *uiop, struct ucred *cred, 1175 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff) 1176 { 1177 u_int32_t *tl; 1178 struct nfsrv_descript nfsd, *nd = &nfsd; 1179 struct nfsnode *np = VTONFS(vp); 1180 nfsattrbit_t attrbits; 1181 int error, len, cangetattr = 1; 1182 1183 *attrflagp = 0; 1184 NFSCL_REQSTART(nd, NFSPROC_READLINK, vp); 1185 if (nd->nd_flag & ND_NFSV4) { 1186 /* 1187 * And do a Getattr op. 1188 */ 1189 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1190 *tl = txdr_unsigned(NFSV4OP_GETATTR); 1191 NFSGETATTR_ATTRBIT(&attrbits); 1192 (void) nfsrv_putattrbit(nd, &attrbits); 1193 } 1194 error = nfscl_request(nd, vp, p, cred, stuff); 1195 if (error) 1196 return (error); 1197 if (nd->nd_flag & ND_NFSV3) 1198 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 1199 if (!nd->nd_repstat && !error) { 1200 NFSM_STRSIZ(len, NFS_MAXPATHLEN); 1201 /* 1202 * This seems weird to me, but must have been added to 1203 * FreeBSD for some reason. The only thing I can think of 1204 * is that there was/is some server that replies with 1205 * more link data than it should? 1206 */ 1207 if (len == NFS_MAXPATHLEN) { 1208 NFSLOCKNODE(np); 1209 if (np->n_size > 0 && np->n_size < NFS_MAXPATHLEN) { 1210 len = np->n_size; 1211 cangetattr = 0; 1212 } 1213 NFSUNLOCKNODE(np); 1214 } 1215 error = nfsm_mbufuio(nd, uiop, len); 1216 if ((nd->nd_flag & ND_NFSV4) && !error && cangetattr) 1217 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 1218 } 1219 if (nd->nd_repstat && !error) 1220 error = nd->nd_repstat; 1221 nfsmout: 1222 mbuf_freem(nd->nd_mrep); 1223 return (error); 1224 } 1225 1226 /* 1227 * Read operation. 1228 */ 1229 APPLESTATIC int 1230 nfsrpc_read(vnode_t vp, struct uio *uiop, struct ucred *cred, 1231 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff) 1232 { 1233 int error, expireret = 0, retrycnt; 1234 u_int32_t clidrev = 0; 1235 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 1236 struct nfsnode *np = VTONFS(vp); 1237 struct ucred *newcred; 1238 struct nfsfh *nfhp = NULL; 1239 nfsv4stateid_t stateid; 1240 void *lckp; 1241 1242 if (nmp->nm_clp != NULL) 1243 clidrev = nmp->nm_clp->nfsc_clientidrev; 1244 newcred = cred; 1245 if (NFSHASNFSV4(nmp)) { 1246 nfhp = np->n_fhp; 1247 newcred = NFSNEWCRED(cred); 1248 } 1249 retrycnt = 0; 1250 do { 1251 lckp = NULL; 1252 if (NFSHASNFSV4(nmp)) 1253 (void)nfscl_getstateid(vp, nfhp->nfh_fh, nfhp->nfh_len, 1254 NFSV4OPEN_ACCESSREAD, newcred, p, &stateid, &lckp); 1255 error = nfsrpc_readrpc(vp, uiop, newcred, &stateid, p, nap, 1256 attrflagp, stuff); 1257 if (error == NFSERR_STALESTATEID) 1258 nfscl_initiate_recovery(nmp->nm_clp); 1259 if (lckp != NULL) 1260 nfscl_lockderef(lckp); 1261 if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 1262 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 1263 error == NFSERR_OLDSTATEID) { 1264 (void) nfs_catnap(PZERO, error, "nfs_read"); 1265 } else if ((error == NFSERR_EXPIRED || 1266 error == NFSERR_BADSTATEID) && clidrev != 0) { 1267 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p); 1268 } 1269 retrycnt++; 1270 } while (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 1271 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 1272 (error == NFSERR_OLDSTATEID && retrycnt < 20) || 1273 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) && 1274 expireret == 0 && clidrev != 0 && retrycnt < 4)); 1275 if (error && retrycnt >= 4) 1276 error = EIO; 1277 if (NFSHASNFSV4(nmp)) 1278 NFSFREECRED(newcred); 1279 return (error); 1280 } 1281 1282 /* 1283 * The actual read RPC. 1284 */ 1285 static int 1286 nfsrpc_readrpc(vnode_t vp, struct uio *uiop, struct ucred *cred, 1287 nfsv4stateid_t *stateidp, NFSPROC_T *p, struct nfsvattr *nap, 1288 int *attrflagp, void *stuff) 1289 { 1290 u_int32_t *tl; 1291 int error = 0, len, retlen, tsiz, eof = 0; 1292 struct nfsrv_descript nfsd; 1293 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 1294 struct nfsrv_descript *nd = &nfsd; 1295 int rsize; 1296 off_t tmp_off; 1297 1298 *attrflagp = 0; 1299 tsiz = uio_uio_resid(uiop); 1300 tmp_off = uiop->uio_offset + tsiz; 1301 NFSLOCKMNT(nmp); 1302 if (tmp_off > nmp->nm_maxfilesize || tmp_off < uiop->uio_offset) { 1303 NFSUNLOCKMNT(nmp); 1304 return (EFBIG); 1305 } 1306 rsize = nmp->nm_rsize; 1307 NFSUNLOCKMNT(nmp); 1308 nd->nd_mrep = NULL; 1309 while (tsiz > 0) { 1310 *attrflagp = 0; 1311 len = (tsiz > rsize) ? rsize : tsiz; 1312 NFSCL_REQSTART(nd, NFSPROC_READ, vp); 1313 if (nd->nd_flag & ND_NFSV4) 1314 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID); 1315 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED * 3); 1316 if (nd->nd_flag & ND_NFSV2) { 1317 *tl++ = txdr_unsigned(uiop->uio_offset); 1318 *tl++ = txdr_unsigned(len); 1319 *tl = 0; 1320 } else { 1321 txdr_hyper(uiop->uio_offset, tl); 1322 *(tl + 2) = txdr_unsigned(len); 1323 } 1324 /* 1325 * Since I can't do a Getattr for NFSv4 for Write, there 1326 * doesn't seem any point in doing one here, either. 1327 * (See the comment in nfsrpc_writerpc() for more info.) 1328 */ 1329 error = nfscl_request(nd, vp, p, cred, stuff); 1330 if (error) 1331 return (error); 1332 if (nd->nd_flag & ND_NFSV3) { 1333 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 1334 } else if (!nd->nd_repstat && (nd->nd_flag & ND_NFSV2)) { 1335 error = nfsm_loadattr(nd, nap); 1336 if (!error) 1337 *attrflagp = 1; 1338 } 1339 if (nd->nd_repstat || error) { 1340 if (!error) 1341 error = nd->nd_repstat; 1342 goto nfsmout; 1343 } 1344 if (nd->nd_flag & ND_NFSV3) { 1345 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1346 eof = fxdr_unsigned(int, *(tl + 1)); 1347 } else if (nd->nd_flag & ND_NFSV4) { 1348 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 1349 eof = fxdr_unsigned(int, *tl); 1350 } 1351 NFSM_STRSIZ(retlen, len); 1352 error = nfsm_mbufuio(nd, uiop, retlen); 1353 if (error) 1354 goto nfsmout; 1355 mbuf_freem(nd->nd_mrep); 1356 nd->nd_mrep = NULL; 1357 tsiz -= retlen; 1358 if (!(nd->nd_flag & ND_NFSV2)) { 1359 if (eof || retlen == 0) 1360 tsiz = 0; 1361 } else if (retlen < len) 1362 tsiz = 0; 1363 } 1364 return (0); 1365 nfsmout: 1366 if (nd->nd_mrep != NULL) 1367 mbuf_freem(nd->nd_mrep); 1368 return (error); 1369 } 1370 1371 /* 1372 * nfs write operation 1373 * When called_from_strategy != 0, it should return EIO for an error that 1374 * indicates recovery is in progress, so that the buffer will be left 1375 * dirty and be written back to the server later. If it loops around, 1376 * the recovery thread could get stuck waiting for the buffer and recovery 1377 * will then deadlock. 1378 */ 1379 APPLESTATIC int 1380 nfsrpc_write(vnode_t vp, struct uio *uiop, int *iomode, int *must_commit, 1381 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, 1382 void *stuff, int called_from_strategy) 1383 { 1384 int error, expireret = 0, retrycnt, nostateid; 1385 u_int32_t clidrev = 0; 1386 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 1387 struct nfsnode *np = VTONFS(vp); 1388 struct ucred *newcred; 1389 struct nfsfh *nfhp = NULL; 1390 nfsv4stateid_t stateid; 1391 void *lckp; 1392 1393 *must_commit = 0; 1394 if (nmp->nm_clp != NULL) 1395 clidrev = nmp->nm_clp->nfsc_clientidrev; 1396 newcred = cred; 1397 if (NFSHASNFSV4(nmp)) { 1398 newcred = NFSNEWCRED(cred); 1399 nfhp = np->n_fhp; 1400 } 1401 retrycnt = 0; 1402 do { 1403 lckp = NULL; 1404 nostateid = 0; 1405 if (NFSHASNFSV4(nmp)) { 1406 (void)nfscl_getstateid(vp, nfhp->nfh_fh, nfhp->nfh_len, 1407 NFSV4OPEN_ACCESSWRITE, newcred, p, &stateid, &lckp); 1408 if (stateid.other[0] == 0 && stateid.other[1] == 0 && 1409 stateid.other[2] == 0) { 1410 nostateid = 1; 1411 NFSCL_DEBUG(1, "stateid0 in write\n"); 1412 } 1413 } 1414 1415 /* 1416 * If there is no stateid for NFSv4, it means this is an 1417 * extraneous write after close. Basically a poorly 1418 * implemented buffer cache. Just don't do the write. 1419 */ 1420 if (nostateid) 1421 error = 0; 1422 else 1423 error = nfsrpc_writerpc(vp, uiop, iomode, must_commit, 1424 newcred, &stateid, p, nap, attrflagp, stuff); 1425 if (error == NFSERR_STALESTATEID) 1426 nfscl_initiate_recovery(nmp->nm_clp); 1427 if (lckp != NULL) 1428 nfscl_lockderef(lckp); 1429 if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 1430 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 1431 error == NFSERR_OLDSTATEID) { 1432 (void) nfs_catnap(PZERO, error, "nfs_write"); 1433 } else if ((error == NFSERR_EXPIRED || 1434 error == NFSERR_BADSTATEID) && clidrev != 0) { 1435 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p); 1436 } 1437 retrycnt++; 1438 } while (error == NFSERR_GRACE || error == NFSERR_DELAY || 1439 ((error == NFSERR_STALESTATEID || 1440 error == NFSERR_STALEDONTRECOVER) && called_from_strategy == 0) || 1441 (error == NFSERR_OLDSTATEID && retrycnt < 20) || 1442 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) && 1443 expireret == 0 && clidrev != 0 && retrycnt < 4)); 1444 if (error != 0 && (retrycnt >= 4 || 1445 ((error == NFSERR_STALESTATEID || 1446 error == NFSERR_STALEDONTRECOVER) && called_from_strategy != 0))) 1447 error = EIO; 1448 if (NFSHASNFSV4(nmp)) 1449 NFSFREECRED(newcred); 1450 return (error); 1451 } 1452 1453 /* 1454 * The actual write RPC. 1455 */ 1456 static int 1457 nfsrpc_writerpc(vnode_t vp, struct uio *uiop, int *iomode, 1458 int *must_commit, struct ucred *cred, nfsv4stateid_t *stateidp, 1459 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff) 1460 { 1461 u_int32_t *tl; 1462 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 1463 struct nfsnode *np = VTONFS(vp); 1464 int error = 0, len, tsiz, rlen, commit, committed = NFSWRITE_FILESYNC; 1465 int wccflag = 0, wsize; 1466 int32_t backup; 1467 struct nfsrv_descript nfsd; 1468 struct nfsrv_descript *nd = &nfsd; 1469 nfsattrbit_t attrbits; 1470 off_t tmp_off; 1471 1472 KASSERT(uiop->uio_iovcnt == 1, ("nfs: writerpc iovcnt > 1")); 1473 *attrflagp = 0; 1474 tsiz = uio_uio_resid(uiop); 1475 tmp_off = uiop->uio_offset + tsiz; 1476 NFSLOCKMNT(nmp); 1477 if (tmp_off > nmp->nm_maxfilesize || tmp_off < uiop->uio_offset) { 1478 NFSUNLOCKMNT(nmp); 1479 return (EFBIG); 1480 } 1481 wsize = nmp->nm_wsize; 1482 NFSUNLOCKMNT(nmp); 1483 nd->nd_mrep = NULL; /* NFSv2 sometimes does a write with */ 1484 nd->nd_repstat = 0; /* uio_resid == 0, so the while is not done */ 1485 while (tsiz > 0) { 1486 *attrflagp = 0; 1487 len = (tsiz > wsize) ? wsize : tsiz; 1488 NFSCL_REQSTART(nd, NFSPROC_WRITE, vp); 1489 if (nd->nd_flag & ND_NFSV4) { 1490 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID); 1491 NFSM_BUILD(tl, u_int32_t *, NFSX_HYPER+2*NFSX_UNSIGNED); 1492 txdr_hyper(uiop->uio_offset, tl); 1493 tl += 2; 1494 *tl++ = txdr_unsigned(*iomode); 1495 *tl = txdr_unsigned(len); 1496 } else if (nd->nd_flag & ND_NFSV3) { 1497 NFSM_BUILD(tl, u_int32_t *, NFSX_HYPER+3*NFSX_UNSIGNED); 1498 txdr_hyper(uiop->uio_offset, tl); 1499 tl += 2; 1500 *tl++ = txdr_unsigned(len); 1501 *tl++ = txdr_unsigned(*iomode); 1502 *tl = txdr_unsigned(len); 1503 } else { 1504 u_int32_t x; 1505 1506 NFSM_BUILD(tl, u_int32_t *, 4 * NFSX_UNSIGNED); 1507 /* 1508 * Not sure why someone changed this, since the 1509 * RFC clearly states that "beginoffset" and 1510 * "totalcount" are ignored, but it wouldn't 1511 * surprise me if there's a busted server out there. 1512 */ 1513 /* Set both "begin" and "current" to non-garbage. */ 1514 x = txdr_unsigned((u_int32_t)uiop->uio_offset); 1515 *tl++ = x; /* "begin offset" */ 1516 *tl++ = x; /* "current offset" */ 1517 x = txdr_unsigned(len); 1518 *tl++ = x; /* total to this offset */ 1519 *tl = x; /* size of this write */ 1520 1521 } 1522 nfsm_uiombuf(nd, uiop, len); 1523 /* 1524 * Although it is tempting to do a normal Getattr Op in the 1525 * NFSv4 compound, the result can be a nearly hung client 1526 * system if the Getattr asks for Owner and/or OwnerGroup. 1527 * It occurs when the client can't map either the Owner or 1528 * Owner_group name in the Getattr reply to a uid/gid. When 1529 * there is a cache miss, the kernel does an upcall to the 1530 * nfsuserd. Then, it can try and read the local /etc/passwd 1531 * or /etc/group file. It can then block in getnewbuf(), 1532 * waiting for dirty writes to be pushed to the NFS server. 1533 * The only reason this doesn't result in a complete 1534 * deadlock, is that the upcall times out and allows 1535 * the write to complete. However, progress is so slow 1536 * that it might just as well be deadlocked. 1537 * As such, we get the rest of the attributes, but not 1538 * Owner or Owner_group. 1539 * nb: nfscl_loadattrcache() needs to be told that these 1540 * partial attributes from a write rpc are being 1541 * passed in, via a argument flag. 1542 */ 1543 if (nd->nd_flag & ND_NFSV4) { 1544 NFSWRITEGETATTR_ATTRBIT(&attrbits); 1545 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1546 *tl = txdr_unsigned(NFSV4OP_GETATTR); 1547 (void) nfsrv_putattrbit(nd, &attrbits); 1548 } 1549 error = nfscl_request(nd, vp, p, cred, stuff); 1550 if (error) 1551 return (error); 1552 if (nd->nd_repstat) { 1553 /* 1554 * In case the rpc gets retried, roll 1555 * the uio fileds changed by nfsm_uiombuf() 1556 * back. 1557 */ 1558 uiop->uio_offset -= len; 1559 uio_uio_resid_add(uiop, len); 1560 uio_iov_base_add(uiop, -len); 1561 uio_iov_len_add(uiop, len); 1562 } 1563 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) { 1564 error = nfscl_wcc_data(nd, vp, nap, attrflagp, 1565 &wccflag, stuff); 1566 if (error) 1567 goto nfsmout; 1568 } 1569 if (!nd->nd_repstat) { 1570 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) { 1571 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED 1572 + NFSX_VERF); 1573 rlen = fxdr_unsigned(int, *tl++); 1574 if (rlen == 0) { 1575 error = NFSERR_IO; 1576 goto nfsmout; 1577 } else if (rlen < len) { 1578 backup = len - rlen; 1579 uio_iov_base_add(uiop, -(backup)); 1580 uio_iov_len_add(uiop, backup); 1581 uiop->uio_offset -= backup; 1582 uio_uio_resid_add(uiop, backup); 1583 len = rlen; 1584 } 1585 commit = fxdr_unsigned(int, *tl++); 1586 1587 /* 1588 * Return the lowest committment level 1589 * obtained by any of the RPCs. 1590 */ 1591 if (committed == NFSWRITE_FILESYNC) 1592 committed = commit; 1593 else if (committed == NFSWRITE_DATASYNC && 1594 commit == NFSWRITE_UNSTABLE) 1595 committed = commit; 1596 NFSLOCKMNT(nmp); 1597 if (!NFSHASWRITEVERF(nmp)) { 1598 NFSBCOPY((caddr_t)tl, 1599 (caddr_t)&nmp->nm_verf[0], 1600 NFSX_VERF); 1601 NFSSETWRITEVERF(nmp); 1602 } else if (NFSBCMP(tl, nmp->nm_verf, 1603 NFSX_VERF)) { 1604 *must_commit = 1; 1605 NFSBCOPY(tl, nmp->nm_verf, NFSX_VERF); 1606 } 1607 NFSUNLOCKMNT(nmp); 1608 } 1609 if (nd->nd_flag & ND_NFSV4) 1610 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1611 if (nd->nd_flag & (ND_NFSV2 | ND_NFSV4)) { 1612 error = nfsm_loadattr(nd, nap); 1613 if (!error) 1614 *attrflagp = NFS_LATTR_NOSHRINK; 1615 } 1616 } else { 1617 error = nd->nd_repstat; 1618 } 1619 if (error) 1620 goto nfsmout; 1621 NFSWRITERPC_SETTIME(wccflag, np, nap, (nd->nd_flag & ND_NFSV4)); 1622 mbuf_freem(nd->nd_mrep); 1623 nd->nd_mrep = NULL; 1624 tsiz -= len; 1625 } 1626 nfsmout: 1627 if (nd->nd_mrep != NULL) 1628 mbuf_freem(nd->nd_mrep); 1629 *iomode = committed; 1630 if (nd->nd_repstat && !error) 1631 error = nd->nd_repstat; 1632 return (error); 1633 } 1634 1635 /* 1636 * nfs mknod rpc 1637 * For NFS v2 this is a kludge. Use a create rpc but with the IFMT bits of the 1638 * mode set to specify the file type and the size field for rdev. 1639 */ 1640 APPLESTATIC int 1641 nfsrpc_mknod(vnode_t dvp, char *name, int namelen, struct vattr *vap, 1642 u_int32_t rdev, enum vtype vtyp, struct ucred *cred, NFSPROC_T *p, 1643 struct nfsvattr *dnap, struct nfsvattr *nnap, struct nfsfh **nfhpp, 1644 int *attrflagp, int *dattrflagp, void *dstuff) 1645 { 1646 u_int32_t *tl; 1647 int error = 0; 1648 struct nfsrv_descript nfsd, *nd = &nfsd; 1649 nfsattrbit_t attrbits; 1650 1651 *nfhpp = NULL; 1652 *attrflagp = 0; 1653 *dattrflagp = 0; 1654 if (namelen > NFS_MAXNAMLEN) 1655 return (ENAMETOOLONG); 1656 NFSCL_REQSTART(nd, NFSPROC_MKNOD, dvp); 1657 if (nd->nd_flag & ND_NFSV4) { 1658 if (vtyp == VBLK || vtyp == VCHR) { 1659 NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 1660 *tl++ = vtonfsv34_type(vtyp); 1661 *tl++ = txdr_unsigned(NFSMAJOR(rdev)); 1662 *tl = txdr_unsigned(NFSMINOR(rdev)); 1663 } else { 1664 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1665 *tl = vtonfsv34_type(vtyp); 1666 } 1667 } 1668 (void) nfsm_strtom(nd, name, namelen); 1669 if (nd->nd_flag & ND_NFSV3) { 1670 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1671 *tl = vtonfsv34_type(vtyp); 1672 } 1673 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) 1674 nfscl_fillsattr(nd, vap, dvp, 0, 0); 1675 if ((nd->nd_flag & ND_NFSV3) && 1676 (vtyp == VCHR || vtyp == VBLK)) { 1677 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1678 *tl++ = txdr_unsigned(NFSMAJOR(rdev)); 1679 *tl = txdr_unsigned(NFSMINOR(rdev)); 1680 } 1681 if (nd->nd_flag & ND_NFSV4) { 1682 NFSGETATTR_ATTRBIT(&attrbits); 1683 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1684 *tl++ = txdr_unsigned(NFSV4OP_GETFH); 1685 *tl = txdr_unsigned(NFSV4OP_GETATTR); 1686 (void) nfsrv_putattrbit(nd, &attrbits); 1687 } 1688 if (nd->nd_flag & ND_NFSV2) 1689 nfscl_fillsattr(nd, vap, dvp, NFSSATTR_SIZERDEV, rdev); 1690 error = nfscl_request(nd, dvp, p, cred, dstuff); 1691 if (error) 1692 return (error); 1693 if (nd->nd_flag & ND_NFSV4) 1694 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 1695 if (!nd->nd_repstat) { 1696 if (nd->nd_flag & ND_NFSV4) { 1697 NFSM_DISSECT(tl, u_int32_t *, 5 * NFSX_UNSIGNED); 1698 error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL); 1699 if (error) 1700 goto nfsmout; 1701 } 1702 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp); 1703 if (error) 1704 goto nfsmout; 1705 } 1706 if (nd->nd_flag & ND_NFSV3) 1707 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 1708 if (!error && nd->nd_repstat) 1709 error = nd->nd_repstat; 1710 nfsmout: 1711 mbuf_freem(nd->nd_mrep); 1712 return (error); 1713 } 1714 1715 /* 1716 * nfs file create call 1717 * Mostly just call the approriate routine. (I separated out v4, so that 1718 * error recovery wouldn't be as difficult.) 1719 */ 1720 APPLESTATIC int 1721 nfsrpc_create(vnode_t dvp, char *name, int namelen, struct vattr *vap, 1722 nfsquad_t cverf, int fmode, struct ucred *cred, NFSPROC_T *p, 1723 struct nfsvattr *dnap, struct nfsvattr *nnap, struct nfsfh **nfhpp, 1724 int *attrflagp, int *dattrflagp, void *dstuff) 1725 { 1726 int error = 0, newone, expireret = 0, retrycnt, unlocked; 1727 struct nfsclowner *owp; 1728 struct nfscldeleg *dp; 1729 struct nfsmount *nmp = VFSTONFS(vnode_mount(dvp)); 1730 u_int32_t clidrev; 1731 1732 if (NFSHASNFSV4(nmp)) { 1733 retrycnt = 0; 1734 do { 1735 dp = NULL; 1736 error = nfscl_open(dvp, NULL, 0, (NFSV4OPEN_ACCESSWRITE | 1737 NFSV4OPEN_ACCESSREAD), 0, cred, p, &owp, NULL, &newone, 1738 NULL, 1); 1739 if (error) 1740 return (error); 1741 if (nmp->nm_clp != NULL) 1742 clidrev = nmp->nm_clp->nfsc_clientidrev; 1743 else 1744 clidrev = 0; 1745 error = nfsrpc_createv4(dvp, name, namelen, vap, cverf, fmode, 1746 owp, &dp, cred, p, dnap, nnap, nfhpp, attrflagp, dattrflagp, 1747 dstuff, &unlocked); 1748 /* 1749 * There is no need to invalidate cached attributes here, 1750 * since new post-delegation issue attributes are always 1751 * returned by nfsrpc_createv4() and these will update the 1752 * attribute cache. 1753 */ 1754 if (dp != NULL) 1755 (void) nfscl_deleg(nmp->nm_mountp, owp->nfsow_clp, 1756 (*nfhpp)->nfh_fh, (*nfhpp)->nfh_len, cred, p, &dp); 1757 nfscl_ownerrelease(owp, error, newone, unlocked); 1758 if (error == NFSERR_GRACE || error == NFSERR_STALECLIENTID || 1759 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY) { 1760 (void) nfs_catnap(PZERO, error, "nfs_open"); 1761 } else if ((error == NFSERR_EXPIRED || 1762 error == NFSERR_BADSTATEID) && clidrev != 0) { 1763 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p); 1764 retrycnt++; 1765 } 1766 } while (error == NFSERR_GRACE || error == NFSERR_STALECLIENTID || 1767 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 1768 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) && 1769 expireret == 0 && clidrev != 0 && retrycnt < 4)); 1770 if (error && retrycnt >= 4) 1771 error = EIO; 1772 } else { 1773 error = nfsrpc_createv23(dvp, name, namelen, vap, cverf, 1774 fmode, cred, p, dnap, nnap, nfhpp, attrflagp, dattrflagp, 1775 dstuff); 1776 } 1777 return (error); 1778 } 1779 1780 /* 1781 * The create rpc for v2 and 3. 1782 */ 1783 static int 1784 nfsrpc_createv23(vnode_t dvp, char *name, int namelen, struct vattr *vap, 1785 nfsquad_t cverf, int fmode, struct ucred *cred, NFSPROC_T *p, 1786 struct nfsvattr *dnap, struct nfsvattr *nnap, struct nfsfh **nfhpp, 1787 int *attrflagp, int *dattrflagp, void *dstuff) 1788 { 1789 u_int32_t *tl; 1790 int error = 0; 1791 struct nfsrv_descript nfsd, *nd = &nfsd; 1792 1793 *nfhpp = NULL; 1794 *attrflagp = 0; 1795 *dattrflagp = 0; 1796 if (namelen > NFS_MAXNAMLEN) 1797 return (ENAMETOOLONG); 1798 NFSCL_REQSTART(nd, NFSPROC_CREATE, dvp); 1799 (void) nfsm_strtom(nd, name, namelen); 1800 if (nd->nd_flag & ND_NFSV3) { 1801 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1802 if (fmode & O_EXCL) { 1803 *tl = txdr_unsigned(NFSCREATE_EXCLUSIVE); 1804 NFSM_BUILD(tl, u_int32_t *, NFSX_VERF); 1805 *tl++ = cverf.lval[0]; 1806 *tl = cverf.lval[1]; 1807 } else { 1808 *tl = txdr_unsigned(NFSCREATE_UNCHECKED); 1809 nfscl_fillsattr(nd, vap, dvp, 0, 0); 1810 } 1811 } else { 1812 nfscl_fillsattr(nd, vap, dvp, NFSSATTR_SIZE0, 0); 1813 } 1814 error = nfscl_request(nd, dvp, p, cred, dstuff); 1815 if (error) 1816 return (error); 1817 if (nd->nd_repstat == 0) { 1818 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp); 1819 if (error) 1820 goto nfsmout; 1821 } 1822 if (nd->nd_flag & ND_NFSV3) 1823 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 1824 if (nd->nd_repstat != 0 && error == 0) 1825 error = nd->nd_repstat; 1826 nfsmout: 1827 mbuf_freem(nd->nd_mrep); 1828 return (error); 1829 } 1830 1831 static int 1832 nfsrpc_createv4(vnode_t dvp, char *name, int namelen, struct vattr *vap, 1833 nfsquad_t cverf, int fmode, struct nfsclowner *owp, struct nfscldeleg **dpp, 1834 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap, 1835 struct nfsvattr *nnap, struct nfsfh **nfhpp, int *attrflagp, 1836 int *dattrflagp, void *dstuff, int *unlockedp) 1837 { 1838 u_int32_t *tl; 1839 int error = 0, deleg, newone, ret, acesize, limitby; 1840 struct nfsrv_descript nfsd, *nd = &nfsd; 1841 struct nfsclopen *op; 1842 struct nfscldeleg *dp = NULL; 1843 struct nfsnode *np; 1844 struct nfsfh *nfhp; 1845 nfsattrbit_t attrbits; 1846 nfsv4stateid_t stateid; 1847 u_int32_t rflags; 1848 1849 np = VTONFS(dvp); 1850 *unlockedp = 0; 1851 *nfhpp = NULL; 1852 *dpp = NULL; 1853 *attrflagp = 0; 1854 *dattrflagp = 0; 1855 if (namelen > NFS_MAXNAMLEN) 1856 return (ENAMETOOLONG); 1857 NFSCL_REQSTART(nd, NFSPROC_CREATE, dvp); 1858 /* 1859 * For V4, this is actually an Open op. 1860 */ 1861 NFSM_BUILD(tl, u_int32_t *, 5 * NFSX_UNSIGNED); 1862 *tl++ = txdr_unsigned(owp->nfsow_seqid); 1863 *tl++ = txdr_unsigned(NFSV4OPEN_ACCESSWRITE | 1864 NFSV4OPEN_ACCESSREAD); 1865 *tl++ = txdr_unsigned(NFSV4OPEN_DENYNONE); 1866 *tl++ = owp->nfsow_clp->nfsc_clientid.lval[0]; 1867 *tl = owp->nfsow_clp->nfsc_clientid.lval[1]; 1868 (void) nfsm_strtom(nd, owp->nfsow_owner, NFSV4CL_LOCKNAMELEN); 1869 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1870 *tl++ = txdr_unsigned(NFSV4OPEN_CREATE); 1871 if (fmode & O_EXCL) { 1872 *tl = txdr_unsigned(NFSCREATE_EXCLUSIVE); 1873 NFSM_BUILD(tl, u_int32_t *, NFSX_VERF); 1874 *tl++ = cverf.lval[0]; 1875 *tl = cverf.lval[1]; 1876 } else { 1877 *tl = txdr_unsigned(NFSCREATE_UNCHECKED); 1878 nfscl_fillsattr(nd, vap, dvp, 0, 0); 1879 } 1880 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1881 *tl = txdr_unsigned(NFSV4OPEN_CLAIMNULL); 1882 (void) nfsm_strtom(nd, name, namelen); 1883 /* Get the new file's handle and attributes. */ 1884 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1885 *tl++ = txdr_unsigned(NFSV4OP_GETFH); 1886 *tl = txdr_unsigned(NFSV4OP_GETATTR); 1887 NFSGETATTR_ATTRBIT(&attrbits); 1888 (void) nfsrv_putattrbit(nd, &attrbits); 1889 /* Get the directory's post-op attributes. */ 1890 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1891 *tl = txdr_unsigned(NFSV4OP_PUTFH); 1892 (void) nfsm_fhtom(nd, np->n_fhp->nfh_fh, np->n_fhp->nfh_len, 0); 1893 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1894 *tl = txdr_unsigned(NFSV4OP_GETATTR); 1895 (void) nfsrv_putattrbit(nd, &attrbits); 1896 error = nfscl_request(nd, dvp, p, cred, dstuff); 1897 if (error) 1898 return (error); 1899 NFSCL_INCRSEQID(owp->nfsow_seqid, nd); 1900 if (nd->nd_repstat == 0) { 1901 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID + 1902 6 * NFSX_UNSIGNED); 1903 stateid.seqid = *tl++; 1904 stateid.other[0] = *tl++; 1905 stateid.other[1] = *tl++; 1906 stateid.other[2] = *tl; 1907 rflags = fxdr_unsigned(u_int32_t, *(tl + 6)); 1908 (void) nfsrv_getattrbits(nd, &attrbits, NULL, NULL); 1909 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 1910 deleg = fxdr_unsigned(int, *tl); 1911 if (deleg == NFSV4OPEN_DELEGATEREAD || 1912 deleg == NFSV4OPEN_DELEGATEWRITE) { 1913 if (!(owp->nfsow_clp->nfsc_flags & 1914 NFSCLFLAGS_FIRSTDELEG)) 1915 owp->nfsow_clp->nfsc_flags |= 1916 (NFSCLFLAGS_FIRSTDELEG | NFSCLFLAGS_GOTDELEG); 1917 MALLOC(dp, struct nfscldeleg *, 1918 sizeof (struct nfscldeleg) + NFSX_V4FHMAX, 1919 M_NFSCLDELEG, M_WAITOK); 1920 LIST_INIT(&dp->nfsdl_owner); 1921 LIST_INIT(&dp->nfsdl_lock); 1922 dp->nfsdl_clp = owp->nfsow_clp; 1923 newnfs_copyincred(cred, &dp->nfsdl_cred); 1924 nfscl_lockinit(&dp->nfsdl_rwlock); 1925 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID + 1926 NFSX_UNSIGNED); 1927 dp->nfsdl_stateid.seqid = *tl++; 1928 dp->nfsdl_stateid.other[0] = *tl++; 1929 dp->nfsdl_stateid.other[1] = *tl++; 1930 dp->nfsdl_stateid.other[2] = *tl++; 1931 ret = fxdr_unsigned(int, *tl); 1932 if (deleg == NFSV4OPEN_DELEGATEWRITE) { 1933 dp->nfsdl_flags = NFSCLDL_WRITE; 1934 /* 1935 * Indicates how much the file can grow. 1936 */ 1937 NFSM_DISSECT(tl, u_int32_t *, 1938 3 * NFSX_UNSIGNED); 1939 limitby = fxdr_unsigned(int, *tl++); 1940 switch (limitby) { 1941 case NFSV4OPEN_LIMITSIZE: 1942 dp->nfsdl_sizelimit = fxdr_hyper(tl); 1943 break; 1944 case NFSV4OPEN_LIMITBLOCKS: 1945 dp->nfsdl_sizelimit = 1946 fxdr_unsigned(u_int64_t, *tl++); 1947 dp->nfsdl_sizelimit *= 1948 fxdr_unsigned(u_int64_t, *tl); 1949 break; 1950 default: 1951 error = NFSERR_BADXDR; 1952 goto nfsmout; 1953 }; 1954 } else { 1955 dp->nfsdl_flags = NFSCLDL_READ; 1956 } 1957 if (ret) 1958 dp->nfsdl_flags |= NFSCLDL_RECALL; 1959 error = nfsrv_dissectace(nd, &dp->nfsdl_ace, &ret, 1960 &acesize, p); 1961 if (error) 1962 goto nfsmout; 1963 } else if (deleg != NFSV4OPEN_DELEGATENONE) { 1964 error = NFSERR_BADXDR; 1965 goto nfsmout; 1966 } 1967 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp); 1968 if (error) 1969 goto nfsmout; 1970 /* Get rid of the PutFH and Getattr status values. */ 1971 NFSM_DISSECT(tl, u_int32_t *, 4 * NFSX_UNSIGNED); 1972 /* Load the directory attributes. */ 1973 error = nfsm_loadattr(nd, dnap); 1974 if (error) 1975 goto nfsmout; 1976 *dattrflagp = 1; 1977 if (dp != NULL && *attrflagp) { 1978 dp->nfsdl_change = nnap->na_filerev; 1979 dp->nfsdl_modtime = nnap->na_mtime; 1980 dp->nfsdl_flags |= NFSCLDL_MODTIMESET; 1981 } 1982 /* 1983 * We can now complete the Open state. 1984 */ 1985 nfhp = *nfhpp; 1986 if (dp != NULL) { 1987 dp->nfsdl_fhlen = nfhp->nfh_len; 1988 NFSBCOPY(nfhp->nfh_fh, dp->nfsdl_fh, nfhp->nfh_len); 1989 } 1990 /* 1991 * Get an Open structure that will be 1992 * attached to the OpenOwner, acquired already. 1993 */ 1994 error = nfscl_open(dvp, nfhp->nfh_fh, nfhp->nfh_len, 1995 (NFSV4OPEN_ACCESSWRITE | NFSV4OPEN_ACCESSREAD), 0, 1996 cred, p, NULL, &op, &newone, NULL, 0); 1997 if (error) 1998 goto nfsmout; 1999 op->nfso_stateid = stateid; 2000 newnfs_copyincred(cred, &op->nfso_cred); 2001 if ((rflags & NFSV4OPEN_RESULTCONFIRM)) { 2002 do { 2003 ret = nfsrpc_openconfirm(dvp, nfhp->nfh_fh, 2004 nfhp->nfh_len, op, cred, p); 2005 if (ret == NFSERR_DELAY) 2006 (void) nfs_catnap(PZERO, ret, "nfs_create"); 2007 } while (ret == NFSERR_DELAY); 2008 error = ret; 2009 } 2010 2011 /* 2012 * If the server is handing out delegations, but we didn't 2013 * get one because an OpenConfirm was required, try the 2014 * Open again, to get a delegation. This is a harmless no-op, 2015 * from a server's point of view. 2016 */ 2017 if ((rflags & NFSV4OPEN_RESULTCONFIRM) && 2018 (owp->nfsow_clp->nfsc_flags & NFSCLFLAGS_GOTDELEG) && 2019 !error && dp == NULL) { 2020 do { 2021 ret = nfsrpc_openrpc(VFSTONFS(vnode_mount(dvp)), dvp, 2022 np->n_fhp->nfh_fh, np->n_fhp->nfh_len, 2023 nfhp->nfh_fh, nfhp->nfh_len, 2024 (NFSV4OPEN_ACCESSWRITE | NFSV4OPEN_ACCESSREAD), op, 2025 name, namelen, &dp, 0, 0x0, cred, p, 0, 1); 2026 if (ret == NFSERR_DELAY) 2027 (void) nfs_catnap(PZERO, ret, "nfs_crt2"); 2028 } while (ret == NFSERR_DELAY); 2029 if (ret) { 2030 if (dp != NULL) { 2031 FREE((caddr_t)dp, M_NFSCLDELEG); 2032 dp = NULL; 2033 } 2034 if (ret == NFSERR_STALECLIENTID || 2035 ret == NFSERR_STALEDONTRECOVER) 2036 error = ret; 2037 } 2038 } 2039 nfscl_openrelease(op, error, newone); 2040 *unlockedp = 1; 2041 } 2042 if (nd->nd_repstat != 0 && error == 0) 2043 error = nd->nd_repstat; 2044 if (error == NFSERR_STALECLIENTID) 2045 nfscl_initiate_recovery(owp->nfsow_clp); 2046 nfsmout: 2047 if (!error) 2048 *dpp = dp; 2049 else if (dp != NULL) 2050 FREE((caddr_t)dp, M_NFSCLDELEG); 2051 mbuf_freem(nd->nd_mrep); 2052 return (error); 2053 } 2054 2055 /* 2056 * Nfs remove rpc 2057 */ 2058 APPLESTATIC int 2059 nfsrpc_remove(vnode_t dvp, char *name, int namelen, vnode_t vp, 2060 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap, int *dattrflagp, 2061 void *dstuff) 2062 { 2063 u_int32_t *tl; 2064 struct nfsrv_descript nfsd, *nd = &nfsd; 2065 struct nfsnode *np; 2066 struct nfsmount *nmp; 2067 nfsv4stateid_t dstateid; 2068 int error, ret = 0, i; 2069 2070 *dattrflagp = 0; 2071 if (namelen > NFS_MAXNAMLEN) 2072 return (ENAMETOOLONG); 2073 nmp = VFSTONFS(vnode_mount(dvp)); 2074 tryagain: 2075 if (NFSHASNFSV4(nmp) && ret == 0) { 2076 ret = nfscl_removedeleg(vp, p, &dstateid); 2077 if (ret == 1) { 2078 NFSCL_REQSTART(nd, NFSPROC_RETDELEGREMOVE, vp); 2079 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID + 2080 NFSX_UNSIGNED); 2081 *tl++ = dstateid.seqid; 2082 *tl++ = dstateid.other[0]; 2083 *tl++ = dstateid.other[1]; 2084 *tl++ = dstateid.other[2]; 2085 *tl = txdr_unsigned(NFSV4OP_PUTFH); 2086 np = VTONFS(dvp); 2087 (void) nfsm_fhtom(nd, np->n_fhp->nfh_fh, 2088 np->n_fhp->nfh_len, 0); 2089 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2090 *tl = txdr_unsigned(NFSV4OP_REMOVE); 2091 } 2092 } else { 2093 ret = 0; 2094 } 2095 if (ret == 0) 2096 NFSCL_REQSTART(nd, NFSPROC_REMOVE, dvp); 2097 (void) nfsm_strtom(nd, name, namelen); 2098 error = nfscl_request(nd, dvp, p, cred, dstuff); 2099 if (error) 2100 return (error); 2101 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) { 2102 /* For NFSv4, parse out any Delereturn replies. */ 2103 if (ret > 0 && nd->nd_repstat != 0 && 2104 (nd->nd_flag & ND_NOMOREDATA)) { 2105 /* 2106 * If the Delegreturn failed, try again without 2107 * it. The server will Recall, as required. 2108 */ 2109 mbuf_freem(nd->nd_mrep); 2110 goto tryagain; 2111 } 2112 for (i = 0; i < (ret * 2); i++) { 2113 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == 2114 ND_NFSV4) { 2115 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2116 if (*(tl + 1)) 2117 nd->nd_flag |= ND_NOMOREDATA; 2118 } 2119 } 2120 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 2121 } 2122 if (nd->nd_repstat && !error) 2123 error = nd->nd_repstat; 2124 nfsmout: 2125 mbuf_freem(nd->nd_mrep); 2126 return (error); 2127 } 2128 2129 /* 2130 * Do an nfs rename rpc. 2131 */ 2132 APPLESTATIC int 2133 nfsrpc_rename(vnode_t fdvp, vnode_t fvp, char *fnameptr, int fnamelen, 2134 vnode_t tdvp, vnode_t tvp, char *tnameptr, int tnamelen, struct ucred *cred, 2135 NFSPROC_T *p, struct nfsvattr *fnap, struct nfsvattr *tnap, 2136 int *fattrflagp, int *tattrflagp, void *fstuff, void *tstuff) 2137 { 2138 u_int32_t *tl; 2139 struct nfsrv_descript nfsd, *nd = &nfsd; 2140 struct nfsmount *nmp; 2141 struct nfsnode *np; 2142 nfsattrbit_t attrbits; 2143 nfsv4stateid_t fdstateid, tdstateid; 2144 int error = 0, ret = 0, gottd = 0, gotfd = 0, i; 2145 2146 *fattrflagp = 0; 2147 *tattrflagp = 0; 2148 nmp = VFSTONFS(vnode_mount(fdvp)); 2149 if (fnamelen > NFS_MAXNAMLEN || tnamelen > NFS_MAXNAMLEN) 2150 return (ENAMETOOLONG); 2151 tryagain: 2152 if (NFSHASNFSV4(nmp) && ret == 0) { 2153 ret = nfscl_renamedeleg(fvp, &fdstateid, &gotfd, tvp, 2154 &tdstateid, &gottd, p); 2155 if (gotfd && gottd) { 2156 NFSCL_REQSTART(nd, NFSPROC_RETDELEGRENAME2, fvp); 2157 } else if (gotfd) { 2158 NFSCL_REQSTART(nd, NFSPROC_RETDELEGRENAME1, fvp); 2159 } else if (gottd) { 2160 NFSCL_REQSTART(nd, NFSPROC_RETDELEGRENAME1, tvp); 2161 } 2162 if (gotfd) { 2163 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID); 2164 *tl++ = fdstateid.seqid; 2165 *tl++ = fdstateid.other[0]; 2166 *tl++ = fdstateid.other[1]; 2167 *tl = fdstateid.other[2]; 2168 if (gottd) { 2169 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2170 *tl = txdr_unsigned(NFSV4OP_PUTFH); 2171 np = VTONFS(tvp); 2172 (void) nfsm_fhtom(nd, np->n_fhp->nfh_fh, 2173 np->n_fhp->nfh_len, 0); 2174 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2175 *tl = txdr_unsigned(NFSV4OP_DELEGRETURN); 2176 } 2177 } 2178 if (gottd) { 2179 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID); 2180 *tl++ = tdstateid.seqid; 2181 *tl++ = tdstateid.other[0]; 2182 *tl++ = tdstateid.other[1]; 2183 *tl = tdstateid.other[2]; 2184 } 2185 if (ret > 0) { 2186 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2187 *tl = txdr_unsigned(NFSV4OP_PUTFH); 2188 np = VTONFS(fdvp); 2189 (void) nfsm_fhtom(nd, np->n_fhp->nfh_fh, 2190 np->n_fhp->nfh_len, 0); 2191 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2192 *tl = txdr_unsigned(NFSV4OP_SAVEFH); 2193 } 2194 } else { 2195 ret = 0; 2196 } 2197 if (ret == 0) 2198 NFSCL_REQSTART(nd, NFSPROC_RENAME, fdvp); 2199 if (nd->nd_flag & ND_NFSV4) { 2200 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2201 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2202 NFSWCCATTR_ATTRBIT(&attrbits); 2203 (void) nfsrv_putattrbit(nd, &attrbits); 2204 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2205 *tl = txdr_unsigned(NFSV4OP_PUTFH); 2206 (void) nfsm_fhtom(nd, VTONFS(tdvp)->n_fhp->nfh_fh, 2207 VTONFS(tdvp)->n_fhp->nfh_len, 0); 2208 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2209 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2210 (void) nfsrv_putattrbit(nd, &attrbits); 2211 nd->nd_flag |= ND_V4WCCATTR; 2212 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2213 *tl = txdr_unsigned(NFSV4OP_RENAME); 2214 } 2215 (void) nfsm_strtom(nd, fnameptr, fnamelen); 2216 if (!(nd->nd_flag & ND_NFSV4)) 2217 (void) nfsm_fhtom(nd, VTONFS(tdvp)->n_fhp->nfh_fh, 2218 VTONFS(tdvp)->n_fhp->nfh_len, 0); 2219 (void) nfsm_strtom(nd, tnameptr, tnamelen); 2220 error = nfscl_request(nd, fdvp, p, cred, fstuff); 2221 if (error) 2222 return (error); 2223 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) { 2224 /* For NFSv4, parse out any Delereturn replies. */ 2225 if (ret > 0 && nd->nd_repstat != 0 && 2226 (nd->nd_flag & ND_NOMOREDATA)) { 2227 /* 2228 * If the Delegreturn failed, try again without 2229 * it. The server will Recall, as required. 2230 */ 2231 mbuf_freem(nd->nd_mrep); 2232 goto tryagain; 2233 } 2234 for (i = 0; i < (ret * 2); i++) { 2235 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == 2236 ND_NFSV4) { 2237 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2238 if (*(tl + 1)) { 2239 if (i == 0 && ret > 1) { 2240 /* 2241 * If the Delegreturn failed, try again 2242 * without it. The server will Recall, as 2243 * required. 2244 * If ret > 1, the first iteration of this 2245 * loop is the second DelegReturn result. 2246 */ 2247 mbuf_freem(nd->nd_mrep); 2248 goto tryagain; 2249 } else { 2250 nd->nd_flag |= ND_NOMOREDATA; 2251 } 2252 } 2253 } 2254 } 2255 /* Now, the first wcc attribute reply. */ 2256 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == ND_NFSV4) { 2257 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2258 if (*(tl + 1)) 2259 nd->nd_flag |= ND_NOMOREDATA; 2260 } 2261 error = nfscl_wcc_data(nd, fdvp, fnap, fattrflagp, NULL, 2262 fstuff); 2263 /* and the second wcc attribute reply. */ 2264 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == ND_NFSV4 && 2265 !error) { 2266 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2267 if (*(tl + 1)) 2268 nd->nd_flag |= ND_NOMOREDATA; 2269 } 2270 if (!error) 2271 error = nfscl_wcc_data(nd, tdvp, tnap, tattrflagp, 2272 NULL, tstuff); 2273 } 2274 if (nd->nd_repstat && !error) 2275 error = nd->nd_repstat; 2276 nfsmout: 2277 mbuf_freem(nd->nd_mrep); 2278 return (error); 2279 } 2280 2281 /* 2282 * nfs hard link create rpc 2283 */ 2284 APPLESTATIC int 2285 nfsrpc_link(vnode_t dvp, vnode_t vp, char *name, int namelen, 2286 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap, 2287 struct nfsvattr *nap, int *attrflagp, int *dattrflagp, void *dstuff) 2288 { 2289 u_int32_t *tl; 2290 struct nfsrv_descript nfsd, *nd = &nfsd; 2291 nfsattrbit_t attrbits; 2292 int error = 0; 2293 2294 *attrflagp = 0; 2295 *dattrflagp = 0; 2296 if (namelen > NFS_MAXNAMLEN) 2297 return (ENAMETOOLONG); 2298 NFSCL_REQSTART(nd, NFSPROC_LINK, vp); 2299 if (nd->nd_flag & ND_NFSV4) { 2300 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2301 *tl = txdr_unsigned(NFSV4OP_PUTFH); 2302 } 2303 (void) nfsm_fhtom(nd, VTONFS(dvp)->n_fhp->nfh_fh, 2304 VTONFS(dvp)->n_fhp->nfh_len, 0); 2305 if (nd->nd_flag & ND_NFSV4) { 2306 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2307 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2308 NFSWCCATTR_ATTRBIT(&attrbits); 2309 (void) nfsrv_putattrbit(nd, &attrbits); 2310 nd->nd_flag |= ND_V4WCCATTR; 2311 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2312 *tl = txdr_unsigned(NFSV4OP_LINK); 2313 } 2314 (void) nfsm_strtom(nd, name, namelen); 2315 error = nfscl_request(nd, vp, p, cred, dstuff); 2316 if (error) 2317 return (error); 2318 if (nd->nd_flag & ND_NFSV3) { 2319 error = nfscl_postop_attr(nd, nap, attrflagp, dstuff); 2320 if (!error) 2321 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, 2322 NULL, dstuff); 2323 } else if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == ND_NFSV4) { 2324 /* 2325 * First, parse out the PutFH and Getattr result. 2326 */ 2327 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2328 if (!(*(tl + 1))) 2329 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2330 if (*(tl + 1)) 2331 nd->nd_flag |= ND_NOMOREDATA; 2332 /* 2333 * Get the pre-op attributes. 2334 */ 2335 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 2336 } 2337 if (nd->nd_repstat && !error) 2338 error = nd->nd_repstat; 2339 nfsmout: 2340 mbuf_freem(nd->nd_mrep); 2341 return (error); 2342 } 2343 2344 /* 2345 * nfs symbolic link create rpc 2346 */ 2347 APPLESTATIC int 2348 nfsrpc_symlink(vnode_t dvp, char *name, int namelen, char *target, 2349 struct vattr *vap, struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap, 2350 struct nfsvattr *nnap, struct nfsfh **nfhpp, int *attrflagp, 2351 int *dattrflagp, void *dstuff) 2352 { 2353 u_int32_t *tl; 2354 struct nfsrv_descript nfsd, *nd = &nfsd; 2355 struct nfsmount *nmp; 2356 int slen, error = 0; 2357 2358 *nfhpp = NULL; 2359 *attrflagp = 0; 2360 *dattrflagp = 0; 2361 nmp = VFSTONFS(vnode_mount(dvp)); 2362 slen = strlen(target); 2363 if (slen > NFS_MAXPATHLEN || namelen > NFS_MAXNAMLEN) 2364 return (ENAMETOOLONG); 2365 NFSCL_REQSTART(nd, NFSPROC_SYMLINK, dvp); 2366 if (nd->nd_flag & ND_NFSV4) { 2367 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2368 *tl = txdr_unsigned(NFLNK); 2369 (void) nfsm_strtom(nd, target, slen); 2370 } 2371 (void) nfsm_strtom(nd, name, namelen); 2372 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) 2373 nfscl_fillsattr(nd, vap, dvp, 0, 0); 2374 if (!(nd->nd_flag & ND_NFSV4)) 2375 (void) nfsm_strtom(nd, target, slen); 2376 if (nd->nd_flag & ND_NFSV2) 2377 nfscl_fillsattr(nd, vap, dvp, NFSSATTR_SIZENEG1, 0); 2378 error = nfscl_request(nd, dvp, p, cred, dstuff); 2379 if (error) 2380 return (error); 2381 if (nd->nd_flag & ND_NFSV4) 2382 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 2383 if ((nd->nd_flag & ND_NFSV3) && !error) { 2384 if (!nd->nd_repstat) 2385 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp); 2386 if (!error) 2387 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, 2388 NULL, dstuff); 2389 } 2390 if (nd->nd_repstat && !error) 2391 error = nd->nd_repstat; 2392 mbuf_freem(nd->nd_mrep); 2393 /* 2394 * Kludge: Map EEXIST => 0 assuming that it is a reply to a retry. 2395 */ 2396 if (error == EEXIST) 2397 error = 0; 2398 return (error); 2399 } 2400 2401 /* 2402 * nfs make dir rpc 2403 */ 2404 APPLESTATIC int 2405 nfsrpc_mkdir(vnode_t dvp, char *name, int namelen, struct vattr *vap, 2406 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap, 2407 struct nfsvattr *nnap, struct nfsfh **nfhpp, int *attrflagp, 2408 int *dattrflagp, void *dstuff) 2409 { 2410 u_int32_t *tl; 2411 struct nfsrv_descript nfsd, *nd = &nfsd; 2412 nfsattrbit_t attrbits; 2413 int error = 0; 2414 struct nfsfh *fhp; 2415 2416 *nfhpp = NULL; 2417 *attrflagp = 0; 2418 *dattrflagp = 0; 2419 fhp = VTONFS(dvp)->n_fhp; 2420 if (namelen > NFS_MAXNAMLEN) 2421 return (ENAMETOOLONG); 2422 NFSCL_REQSTART(nd, NFSPROC_MKDIR, dvp); 2423 if (nd->nd_flag & ND_NFSV4) { 2424 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2425 *tl = txdr_unsigned(NFDIR); 2426 } 2427 (void) nfsm_strtom(nd, name, namelen); 2428 nfscl_fillsattr(nd, vap, dvp, NFSSATTR_SIZENEG1, 0); 2429 if (nd->nd_flag & ND_NFSV4) { 2430 NFSGETATTR_ATTRBIT(&attrbits); 2431 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2432 *tl++ = txdr_unsigned(NFSV4OP_GETFH); 2433 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2434 (void) nfsrv_putattrbit(nd, &attrbits); 2435 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2436 *tl = txdr_unsigned(NFSV4OP_PUTFH); 2437 (void) nfsm_fhtom(nd, fhp->nfh_fh, fhp->nfh_len, 0); 2438 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2439 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2440 (void) nfsrv_putattrbit(nd, &attrbits); 2441 } 2442 error = nfscl_request(nd, dvp, p, cred, dstuff); 2443 if (error) 2444 return (error); 2445 if (nd->nd_flag & ND_NFSV4) 2446 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 2447 if (!nd->nd_repstat && !error) { 2448 if (nd->nd_flag & ND_NFSV4) { 2449 NFSM_DISSECT(tl, u_int32_t *, 5 * NFSX_UNSIGNED); 2450 error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL); 2451 } 2452 if (!error) 2453 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp); 2454 if (error == 0 && (nd->nd_flag & ND_NFSV4) != 0) { 2455 /* Get rid of the PutFH and Getattr status values. */ 2456 NFSM_DISSECT(tl, u_int32_t *, 4 * NFSX_UNSIGNED); 2457 /* Load the directory attributes. */ 2458 error = nfsm_loadattr(nd, dnap); 2459 if (error == 0) 2460 *dattrflagp = 1; 2461 } 2462 } 2463 if ((nd->nd_flag & ND_NFSV3) && !error) 2464 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 2465 if (nd->nd_repstat && !error) 2466 error = nd->nd_repstat; 2467 nfsmout: 2468 mbuf_freem(nd->nd_mrep); 2469 /* 2470 * Kludge: Map EEXIST => 0 assuming that you have a reply to a retry. 2471 */ 2472 if (error == EEXIST) 2473 error = 0; 2474 return (error); 2475 } 2476 2477 /* 2478 * nfs remove directory call 2479 */ 2480 APPLESTATIC int 2481 nfsrpc_rmdir(vnode_t dvp, char *name, int namelen, struct ucred *cred, 2482 NFSPROC_T *p, struct nfsvattr *dnap, int *dattrflagp, void *dstuff) 2483 { 2484 struct nfsrv_descript nfsd, *nd = &nfsd; 2485 int error = 0; 2486 2487 *dattrflagp = 0; 2488 if (namelen > NFS_MAXNAMLEN) 2489 return (ENAMETOOLONG); 2490 NFSCL_REQSTART(nd, NFSPROC_RMDIR, dvp); 2491 (void) nfsm_strtom(nd, name, namelen); 2492 error = nfscl_request(nd, dvp, p, cred, dstuff); 2493 if (error) 2494 return (error); 2495 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) 2496 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 2497 if (nd->nd_repstat && !error) 2498 error = nd->nd_repstat; 2499 mbuf_freem(nd->nd_mrep); 2500 /* 2501 * Kludge: Map ENOENT => 0 assuming that you have a reply to a retry. 2502 */ 2503 if (error == ENOENT) 2504 error = 0; 2505 return (error); 2506 } 2507 2508 /* 2509 * Readdir rpc. 2510 * Always returns with either uio_resid unchanged, if you are at the 2511 * end of the directory, or uio_resid == 0, with all DIRBLKSIZ chunks 2512 * filled in. 2513 * I felt this would allow caching of directory blocks more easily 2514 * than returning a pertially filled block. 2515 * Directory offset cookies: 2516 * Oh my, what to do with them... 2517 * I can think of three ways to deal with them: 2518 * 1 - have the layer above these RPCs maintain a map between logical 2519 * directory byte offsets and the NFS directory offset cookies 2520 * 2 - pass the opaque directory offset cookies up into userland 2521 * and let the libc functions deal with them, via the system call 2522 * 3 - return them to userland in the "struct dirent", so future versions 2523 * of libc can use them and do whatever is necessary to amke things work 2524 * above these rpc calls, in the meantime 2525 * For now, I do #3 by "hiding" the directory offset cookies after the 2526 * d_name field in struct dirent. This is space inside d_reclen that 2527 * will be ignored by anything that doesn't know about them. 2528 * The directory offset cookies are filled in as the last 8 bytes of 2529 * each directory entry, after d_name. Someday, the userland libc 2530 * functions may be able to use these. In the meantime, it satisfies 2531 * OpenBSD's requirements for cookies being returned. 2532 * If expects the directory offset cookie for the read to be in uio_offset 2533 * and returns the one for the next entry after this directory block in 2534 * there, as well. 2535 */ 2536 APPLESTATIC int 2537 nfsrpc_readdir(vnode_t vp, struct uio *uiop, nfsuint64 *cookiep, 2538 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, 2539 int *eofp, void *stuff) 2540 { 2541 int len, left; 2542 struct dirent *dp = NULL; 2543 u_int32_t *tl; 2544 nfsquad_t cookie, ncookie; 2545 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 2546 struct nfsnode *dnp = VTONFS(vp); 2547 struct nfsvattr nfsva; 2548 struct nfsrv_descript nfsd, *nd = &nfsd; 2549 int error = 0, tlen, more_dirs = 1, blksiz = 0, bigenough = 1; 2550 int reqsize, tryformoredirs = 1, readsize, eof = 0, gotmnton = 0; 2551 long dotfileid, dotdotfileid = 0; 2552 u_int32_t fakefileno = 0xffffffff, rderr; 2553 char *cp; 2554 nfsattrbit_t attrbits, dattrbits; 2555 u_int32_t *tl2 = NULL; 2556 size_t tresid; 2557 2558 KASSERT(uiop->uio_iovcnt == 1 && 2559 (uio_uio_resid(uiop) & (DIRBLKSIZ - 1)) == 0, 2560 ("nfs readdirrpc bad uio")); 2561 2562 /* 2563 * There is no point in reading a lot more than uio_resid, however 2564 * adding one additional DIRBLKSIZ makes sense. Since uio_resid 2565 * and nm_readdirsize are both exact multiples of DIRBLKSIZ, this 2566 * will never make readsize > nm_readdirsize. 2567 */ 2568 readsize = nmp->nm_readdirsize; 2569 if (readsize > uio_uio_resid(uiop)) 2570 readsize = uio_uio_resid(uiop) + DIRBLKSIZ; 2571 2572 *attrflagp = 0; 2573 if (eofp) 2574 *eofp = 0; 2575 tresid = uio_uio_resid(uiop); 2576 cookie.lval[0] = cookiep->nfsuquad[0]; 2577 cookie.lval[1] = cookiep->nfsuquad[1]; 2578 nd->nd_mrep = NULL; 2579 2580 /* 2581 * For NFSv4, first create the "." and ".." entries. 2582 */ 2583 if (NFSHASNFSV4(nmp)) { 2584 reqsize = 6 * NFSX_UNSIGNED; 2585 NFSGETATTR_ATTRBIT(&dattrbits); 2586 NFSZERO_ATTRBIT(&attrbits); 2587 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_FILEID); 2588 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_TYPE); 2589 if (NFSISSET_ATTRBIT(&dnp->n_vattr.na_suppattr, 2590 NFSATTRBIT_MOUNTEDONFILEID)) { 2591 NFSSETBIT_ATTRBIT(&attrbits, 2592 NFSATTRBIT_MOUNTEDONFILEID); 2593 gotmnton = 1; 2594 } else { 2595 /* 2596 * Must fake it. Use the fileno, except when the 2597 * fsid is != to that of the directory. For that 2598 * case, generate a fake fileno that is not the same. 2599 */ 2600 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_FSID); 2601 gotmnton = 0; 2602 } 2603 2604 /* 2605 * Joy, oh joy. For V4 we get to hand craft '.' and '..'. 2606 */ 2607 if (uiop->uio_offset == 0) { 2608 NFSCL_REQSTART(nd, NFSPROC_LOOKUPP, vp); 2609 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2610 *tl++ = txdr_unsigned(NFSV4OP_GETFH); 2611 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2612 (void) nfsrv_putattrbit(nd, &attrbits); 2613 error = nfscl_request(nd, vp, p, cred, stuff); 2614 if (error) 2615 return (error); 2616 dotfileid = 0; /* Fake out the compiler. */ 2617 if ((nd->nd_flag & ND_NOMOREDATA) == 0) { 2618 error = nfsm_loadattr(nd, &nfsva); 2619 if (error != 0) 2620 goto nfsmout; 2621 dotfileid = nfsva.na_fileid; 2622 } 2623 if (nd->nd_repstat == 0) { 2624 NFSM_DISSECT(tl, u_int32_t *, 5 * NFSX_UNSIGNED); 2625 len = fxdr_unsigned(int, *(tl + 4)); 2626 if (len > 0 && len <= NFSX_V4FHMAX) 2627 error = nfsm_advance(nd, NFSM_RNDUP(len), -1); 2628 else 2629 error = EPERM; 2630 if (!error) { 2631 NFSM_DISSECT(tl, u_int32_t *, 2*NFSX_UNSIGNED); 2632 nfsva.na_mntonfileno = 0xffffffff; 2633 error = nfsv4_loadattr(nd, NULL, &nfsva, NULL, 2634 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0, 2635 NULL, NULL, NULL, p, cred); 2636 if (error) { 2637 dotdotfileid = dotfileid; 2638 } else if (gotmnton) { 2639 if (nfsva.na_mntonfileno != 0xffffffff) 2640 dotdotfileid = nfsva.na_mntonfileno; 2641 else 2642 dotdotfileid = nfsva.na_fileid; 2643 } else if (nfsva.na_filesid[0] == 2644 dnp->n_vattr.na_filesid[0] && 2645 nfsva.na_filesid[1] == 2646 dnp->n_vattr.na_filesid[1]) { 2647 dotdotfileid = nfsva.na_fileid; 2648 } else { 2649 do { 2650 fakefileno--; 2651 } while (fakefileno == 2652 nfsva.na_fileid); 2653 dotdotfileid = fakefileno; 2654 } 2655 } 2656 } else if (nd->nd_repstat == NFSERR_NOENT) { 2657 /* 2658 * Lookupp returns NFSERR_NOENT when we are 2659 * at the root, so just use the current dir. 2660 */ 2661 nd->nd_repstat = 0; 2662 dotdotfileid = dotfileid; 2663 } else { 2664 error = nd->nd_repstat; 2665 } 2666 mbuf_freem(nd->nd_mrep); 2667 if (error) 2668 return (error); 2669 nd->nd_mrep = NULL; 2670 dp = (struct dirent *) CAST_DOWN(caddr_t, uio_iov_base(uiop)); 2671 dp->d_type = DT_DIR; 2672 dp->d_fileno = dotfileid; 2673 dp->d_namlen = 1; 2674 dp->d_name[0] = '.'; 2675 dp->d_name[1] = '\0'; 2676 dp->d_reclen = DIRENT_SIZE(dp) + NFSX_HYPER; 2677 /* 2678 * Just make these offset cookie 0. 2679 */ 2680 tl = (u_int32_t *)&dp->d_name[4]; 2681 *tl++ = 0; 2682 *tl = 0; 2683 blksiz += dp->d_reclen; 2684 uio_uio_resid_add(uiop, -(dp->d_reclen)); 2685 uiop->uio_offset += dp->d_reclen; 2686 uio_iov_base_add(uiop, dp->d_reclen); 2687 uio_iov_len_add(uiop, -(dp->d_reclen)); 2688 dp = (struct dirent *) CAST_DOWN(caddr_t, uio_iov_base(uiop)); 2689 dp->d_type = DT_DIR; 2690 dp->d_fileno = dotdotfileid; 2691 dp->d_namlen = 2; 2692 dp->d_name[0] = '.'; 2693 dp->d_name[1] = '.'; 2694 dp->d_name[2] = '\0'; 2695 dp->d_reclen = DIRENT_SIZE(dp) + NFSX_HYPER; 2696 /* 2697 * Just make these offset cookie 0. 2698 */ 2699 tl = (u_int32_t *)&dp->d_name[4]; 2700 *tl++ = 0; 2701 *tl = 0; 2702 blksiz += dp->d_reclen; 2703 uio_uio_resid_add(uiop, -(dp->d_reclen)); 2704 uiop->uio_offset += dp->d_reclen; 2705 uio_iov_base_add(uiop, dp->d_reclen); 2706 uio_iov_len_add(uiop, -(dp->d_reclen)); 2707 } 2708 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_RDATTRERROR); 2709 } else { 2710 reqsize = 5 * NFSX_UNSIGNED; 2711 } 2712 2713 2714 /* 2715 * Loop around doing readdir rpc's of size readsize. 2716 * The stopping criteria is EOF or buffer full. 2717 */ 2718 while (more_dirs && bigenough) { 2719 *attrflagp = 0; 2720 NFSCL_REQSTART(nd, NFSPROC_READDIR, vp); 2721 if (nd->nd_flag & ND_NFSV2) { 2722 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2723 *tl++ = cookie.lval[1]; 2724 *tl = txdr_unsigned(readsize); 2725 } else { 2726 NFSM_BUILD(tl, u_int32_t *, reqsize); 2727 *tl++ = cookie.lval[0]; 2728 *tl++ = cookie.lval[1]; 2729 if (cookie.qval == 0) { 2730 *tl++ = 0; 2731 *tl++ = 0; 2732 } else { 2733 NFSLOCKNODE(dnp); 2734 *tl++ = dnp->n_cookieverf.nfsuquad[0]; 2735 *tl++ = dnp->n_cookieverf.nfsuquad[1]; 2736 NFSUNLOCKNODE(dnp); 2737 } 2738 if (nd->nd_flag & ND_NFSV4) { 2739 *tl++ = txdr_unsigned(readsize); 2740 *tl = txdr_unsigned(readsize); 2741 (void) nfsrv_putattrbit(nd, &attrbits); 2742 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2743 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2744 (void) nfsrv_putattrbit(nd, &dattrbits); 2745 } else { 2746 *tl = txdr_unsigned(readsize); 2747 } 2748 } 2749 error = nfscl_request(nd, vp, p, cred, stuff); 2750 if (error) 2751 return (error); 2752 if (!(nd->nd_flag & ND_NFSV2)) { 2753 if (nd->nd_flag & ND_NFSV3) 2754 error = nfscl_postop_attr(nd, nap, attrflagp, 2755 stuff); 2756 if (!nd->nd_repstat && !error) { 2757 NFSM_DISSECT(tl, u_int32_t *, NFSX_HYPER); 2758 NFSLOCKNODE(dnp); 2759 dnp->n_cookieverf.nfsuquad[0] = *tl++; 2760 dnp->n_cookieverf.nfsuquad[1] = *tl; 2761 NFSUNLOCKNODE(dnp); 2762 } 2763 } 2764 if (nd->nd_repstat || error) { 2765 if (!error) 2766 error = nd->nd_repstat; 2767 goto nfsmout; 2768 } 2769 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2770 more_dirs = fxdr_unsigned(int, *tl); 2771 if (!more_dirs) 2772 tryformoredirs = 0; 2773 2774 /* loop thru the dir entries, doctoring them to 4bsd form */ 2775 while (more_dirs && bigenough) { 2776 if (nd->nd_flag & ND_NFSV4) { 2777 NFSM_DISSECT(tl, u_int32_t *, 3*NFSX_UNSIGNED); 2778 ncookie.lval[0] = *tl++; 2779 ncookie.lval[1] = *tl++; 2780 len = fxdr_unsigned(int, *tl); 2781 } else if (nd->nd_flag & ND_NFSV3) { 2782 NFSM_DISSECT(tl, u_int32_t *, 3*NFSX_UNSIGNED); 2783 nfsva.na_fileid = fxdr_hyper(tl); 2784 tl += 2; 2785 len = fxdr_unsigned(int, *tl); 2786 } else { 2787 NFSM_DISSECT(tl, u_int32_t *, 2*NFSX_UNSIGNED); 2788 nfsva.na_fileid = 2789 fxdr_unsigned(long, *tl++); 2790 len = fxdr_unsigned(int, *tl); 2791 } 2792 if (len <= 0 || len > NFS_MAXNAMLEN) { 2793 error = EBADRPC; 2794 goto nfsmout; 2795 } 2796 tlen = NFSM_RNDUP(len); 2797 if (tlen == len) 2798 tlen += 4; /* To ensure null termination */ 2799 left = DIRBLKSIZ - blksiz; 2800 if ((int)(tlen + DIRHDSIZ + NFSX_HYPER) > left) { 2801 dp->d_reclen += left; 2802 uio_iov_base_add(uiop, left); 2803 uio_iov_len_add(uiop, -(left)); 2804 uio_uio_resid_add(uiop, -(left)); 2805 uiop->uio_offset += left; 2806 blksiz = 0; 2807 } 2808 if ((int)(tlen + DIRHDSIZ + NFSX_HYPER) > uio_uio_resid(uiop)) 2809 bigenough = 0; 2810 if (bigenough) { 2811 dp = (struct dirent *) CAST_DOWN(caddr_t, uio_iov_base(uiop)); 2812 dp->d_namlen = len; 2813 dp->d_reclen = tlen + DIRHDSIZ + NFSX_HYPER; 2814 dp->d_type = DT_UNKNOWN; 2815 blksiz += dp->d_reclen; 2816 if (blksiz == DIRBLKSIZ) 2817 blksiz = 0; 2818 uio_uio_resid_add(uiop, -(DIRHDSIZ)); 2819 uiop->uio_offset += DIRHDSIZ; 2820 uio_iov_base_add(uiop, DIRHDSIZ); 2821 uio_iov_len_add(uiop, -(DIRHDSIZ)); 2822 error = nfsm_mbufuio(nd, uiop, len); 2823 if (error) 2824 goto nfsmout; 2825 cp = CAST_DOWN(caddr_t, uio_iov_base(uiop)); 2826 tlen -= len; 2827 *cp = '\0'; /* null terminate */ 2828 cp += tlen; /* points to cookie storage */ 2829 tl2 = (u_int32_t *)cp; 2830 uio_iov_base_add(uiop, (tlen + NFSX_HYPER)); 2831 uio_iov_len_add(uiop, -(tlen + NFSX_HYPER)); 2832 uio_uio_resid_add(uiop, -(tlen + NFSX_HYPER)); 2833 uiop->uio_offset += (tlen + NFSX_HYPER); 2834 } else { 2835 error = nfsm_advance(nd, NFSM_RNDUP(len), -1); 2836 if (error) 2837 goto nfsmout; 2838 } 2839 if (nd->nd_flag & ND_NFSV4) { 2840 rderr = 0; 2841 nfsva.na_mntonfileno = 0xffffffff; 2842 error = nfsv4_loadattr(nd, NULL, &nfsva, NULL, 2843 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0, 2844 NULL, NULL, &rderr, p, cred); 2845 if (error) 2846 goto nfsmout; 2847 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2848 } else if (nd->nd_flag & ND_NFSV3) { 2849 NFSM_DISSECT(tl, u_int32_t *, 3*NFSX_UNSIGNED); 2850 ncookie.lval[0] = *tl++; 2851 ncookie.lval[1] = *tl++; 2852 } else { 2853 NFSM_DISSECT(tl, u_int32_t *, 2*NFSX_UNSIGNED); 2854 ncookie.lval[0] = 0; 2855 ncookie.lval[1] = *tl++; 2856 } 2857 if (bigenough) { 2858 if (nd->nd_flag & ND_NFSV4) { 2859 if (rderr) { 2860 dp->d_fileno = 0; 2861 } else { 2862 if (gotmnton) { 2863 if (nfsva.na_mntonfileno != 0xffffffff) 2864 dp->d_fileno = nfsva.na_mntonfileno; 2865 else 2866 dp->d_fileno = nfsva.na_fileid; 2867 } else if (nfsva.na_filesid[0] == 2868 dnp->n_vattr.na_filesid[0] && 2869 nfsva.na_filesid[1] == 2870 dnp->n_vattr.na_filesid[1]) { 2871 dp->d_fileno = nfsva.na_fileid; 2872 } else { 2873 do { 2874 fakefileno--; 2875 } while (fakefileno == 2876 nfsva.na_fileid); 2877 dp->d_fileno = fakefileno; 2878 } 2879 dp->d_type = vtonfs_dtype(nfsva.na_type); 2880 } 2881 } else { 2882 dp->d_fileno = nfsva.na_fileid; 2883 } 2884 *tl2++ = cookiep->nfsuquad[0] = cookie.lval[0] = 2885 ncookie.lval[0]; 2886 *tl2 = cookiep->nfsuquad[1] = cookie.lval[1] = 2887 ncookie.lval[1]; 2888 } 2889 more_dirs = fxdr_unsigned(int, *tl); 2890 } 2891 /* 2892 * If at end of rpc data, get the eof boolean 2893 */ 2894 if (!more_dirs) { 2895 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2896 eof = fxdr_unsigned(int, *tl); 2897 if (tryformoredirs) 2898 more_dirs = !eof; 2899 if (nd->nd_flag & ND_NFSV4) { 2900 error = nfscl_postop_attr(nd, nap, attrflagp, 2901 stuff); 2902 if (error) 2903 goto nfsmout; 2904 } 2905 } 2906 mbuf_freem(nd->nd_mrep); 2907 nd->nd_mrep = NULL; 2908 } 2909 /* 2910 * Fill last record, iff any, out to a multiple of DIRBLKSIZ 2911 * by increasing d_reclen for the last record. 2912 */ 2913 if (blksiz > 0) { 2914 left = DIRBLKSIZ - blksiz; 2915 dp->d_reclen += left; 2916 uio_iov_base_add(uiop, left); 2917 uio_iov_len_add(uiop, -(left)); 2918 uio_uio_resid_add(uiop, -(left)); 2919 uiop->uio_offset += left; 2920 } 2921 2922 /* 2923 * If returning no data, assume end of file. 2924 * If not bigenough, return not end of file, since you aren't 2925 * returning all the data 2926 * Otherwise, return the eof flag from the server. 2927 */ 2928 if (eofp) { 2929 if (tresid == ((size_t)(uio_uio_resid(uiop)))) 2930 *eofp = 1; 2931 else if (!bigenough) 2932 *eofp = 0; 2933 else 2934 *eofp = eof; 2935 } 2936 2937 /* 2938 * Add extra empty records to any remaining DIRBLKSIZ chunks. 2939 */ 2940 while (uio_uio_resid(uiop) > 0 && ((size_t)(uio_uio_resid(uiop))) != tresid) { 2941 dp = (struct dirent *) CAST_DOWN(caddr_t, uio_iov_base(uiop)); 2942 dp->d_type = DT_UNKNOWN; 2943 dp->d_fileno = 0; 2944 dp->d_namlen = 0; 2945 dp->d_name[0] = '\0'; 2946 tl = (u_int32_t *)&dp->d_name[4]; 2947 *tl++ = cookie.lval[0]; 2948 *tl = cookie.lval[1]; 2949 dp->d_reclen = DIRBLKSIZ; 2950 uio_iov_base_add(uiop, DIRBLKSIZ); 2951 uio_iov_len_add(uiop, -(DIRBLKSIZ)); 2952 uio_uio_resid_add(uiop, -(DIRBLKSIZ)); 2953 uiop->uio_offset += DIRBLKSIZ; 2954 } 2955 2956 nfsmout: 2957 if (nd->nd_mrep != NULL) 2958 mbuf_freem(nd->nd_mrep); 2959 return (error); 2960 } 2961 2962 #ifndef APPLE 2963 /* 2964 * NFS V3 readdir plus RPC. Used in place of nfsrpc_readdir(). 2965 * (Also used for NFS V4 when mount flag set.) 2966 * (ditto above w.r.t. multiple of DIRBLKSIZ, etc.) 2967 */ 2968 APPLESTATIC int 2969 nfsrpc_readdirplus(vnode_t vp, struct uio *uiop, nfsuint64 *cookiep, 2970 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, 2971 int *eofp, void *stuff) 2972 { 2973 int len, left; 2974 struct dirent *dp = NULL; 2975 u_int32_t *tl; 2976 vnode_t newvp = NULLVP; 2977 struct nfsrv_descript nfsd, *nd = &nfsd; 2978 struct nameidata nami, *ndp = &nami; 2979 struct componentname *cnp = &ndp->ni_cnd; 2980 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 2981 struct nfsnode *dnp = VTONFS(vp), *np; 2982 struct nfsvattr nfsva; 2983 struct nfsfh *nfhp; 2984 nfsquad_t cookie, ncookie; 2985 int error = 0, tlen, more_dirs = 1, blksiz = 0, bigenough = 1; 2986 int attrflag, tryformoredirs = 1, eof = 0, gotmnton = 0; 2987 int isdotdot = 0, unlocknewvp = 0; 2988 long dotfileid, dotdotfileid = 0, fileno = 0; 2989 char *cp; 2990 nfsattrbit_t attrbits, dattrbits; 2991 size_t tresid; 2992 u_int32_t *tl2 = NULL, fakefileno = 0xffffffff, rderr; 2993 struct timespec dctime; 2994 2995 KASSERT(uiop->uio_iovcnt == 1 && 2996 (uio_uio_resid(uiop) & (DIRBLKSIZ - 1)) == 0, 2997 ("nfs readdirplusrpc bad uio")); 2998 timespecclear(&dctime); 2999 *attrflagp = 0; 3000 if (eofp != NULL) 3001 *eofp = 0; 3002 ndp->ni_dvp = vp; 3003 nd->nd_mrep = NULL; 3004 cookie.lval[0] = cookiep->nfsuquad[0]; 3005 cookie.lval[1] = cookiep->nfsuquad[1]; 3006 tresid = uio_uio_resid(uiop); 3007 3008 /* 3009 * For NFSv4, first create the "." and ".." entries. 3010 */ 3011 if (NFSHASNFSV4(nmp)) { 3012 NFSGETATTR_ATTRBIT(&dattrbits); 3013 NFSZERO_ATTRBIT(&attrbits); 3014 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_FILEID); 3015 if (NFSISSET_ATTRBIT(&dnp->n_vattr.na_suppattr, 3016 NFSATTRBIT_MOUNTEDONFILEID)) { 3017 NFSSETBIT_ATTRBIT(&attrbits, 3018 NFSATTRBIT_MOUNTEDONFILEID); 3019 gotmnton = 1; 3020 } else { 3021 /* 3022 * Must fake it. Use the fileno, except when the 3023 * fsid is != to that of the directory. For that 3024 * case, generate a fake fileno that is not the same. 3025 */ 3026 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_FSID); 3027 gotmnton = 0; 3028 } 3029 3030 /* 3031 * Joy, oh joy. For V4 we get to hand craft '.' and '..'. 3032 */ 3033 if (uiop->uio_offset == 0) { 3034 NFSCL_REQSTART(nd, NFSPROC_LOOKUPP, vp); 3035 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 3036 *tl++ = txdr_unsigned(NFSV4OP_GETFH); 3037 *tl = txdr_unsigned(NFSV4OP_GETATTR); 3038 (void) nfsrv_putattrbit(nd, &attrbits); 3039 error = nfscl_request(nd, vp, p, cred, stuff); 3040 if (error) 3041 return (error); 3042 dotfileid = 0; /* Fake out the compiler. */ 3043 if ((nd->nd_flag & ND_NOMOREDATA) == 0) { 3044 error = nfsm_loadattr(nd, &nfsva); 3045 if (error != 0) 3046 goto nfsmout; 3047 dctime = nfsva.na_ctime; 3048 dotfileid = nfsva.na_fileid; 3049 } 3050 if (nd->nd_repstat == 0) { 3051 NFSM_DISSECT(tl, u_int32_t *, 5 * NFSX_UNSIGNED); 3052 len = fxdr_unsigned(int, *(tl + 4)); 3053 if (len > 0 && len <= NFSX_V4FHMAX) 3054 error = nfsm_advance(nd, NFSM_RNDUP(len), -1); 3055 else 3056 error = EPERM; 3057 if (!error) { 3058 NFSM_DISSECT(tl, u_int32_t *, 2*NFSX_UNSIGNED); 3059 nfsva.na_mntonfileno = 0xffffffff; 3060 error = nfsv4_loadattr(nd, NULL, &nfsva, NULL, 3061 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0, 3062 NULL, NULL, NULL, p, cred); 3063 if (error) { 3064 dotdotfileid = dotfileid; 3065 } else if (gotmnton) { 3066 if (nfsva.na_mntonfileno != 0xffffffff) 3067 dotdotfileid = nfsva.na_mntonfileno; 3068 else 3069 dotdotfileid = nfsva.na_fileid; 3070 } else if (nfsva.na_filesid[0] == 3071 dnp->n_vattr.na_filesid[0] && 3072 nfsva.na_filesid[1] == 3073 dnp->n_vattr.na_filesid[1]) { 3074 dotdotfileid = nfsva.na_fileid; 3075 } else { 3076 do { 3077 fakefileno--; 3078 } while (fakefileno == 3079 nfsva.na_fileid); 3080 dotdotfileid = fakefileno; 3081 } 3082 } 3083 } else if (nd->nd_repstat == NFSERR_NOENT) { 3084 /* 3085 * Lookupp returns NFSERR_NOENT when we are 3086 * at the root, so just use the current dir. 3087 */ 3088 nd->nd_repstat = 0; 3089 dotdotfileid = dotfileid; 3090 } else { 3091 error = nd->nd_repstat; 3092 } 3093 mbuf_freem(nd->nd_mrep); 3094 if (error) 3095 return (error); 3096 nd->nd_mrep = NULL; 3097 dp = (struct dirent *)uio_iov_base(uiop); 3098 dp->d_type = DT_DIR; 3099 dp->d_fileno = dotfileid; 3100 dp->d_namlen = 1; 3101 dp->d_name[0] = '.'; 3102 dp->d_name[1] = '\0'; 3103 dp->d_reclen = DIRENT_SIZE(dp) + NFSX_HYPER; 3104 /* 3105 * Just make these offset cookie 0. 3106 */ 3107 tl = (u_int32_t *)&dp->d_name[4]; 3108 *tl++ = 0; 3109 *tl = 0; 3110 blksiz += dp->d_reclen; 3111 uio_uio_resid_add(uiop, -(dp->d_reclen)); 3112 uiop->uio_offset += dp->d_reclen; 3113 uio_iov_base_add(uiop, dp->d_reclen); 3114 uio_iov_len_add(uiop, -(dp->d_reclen)); 3115 dp = (struct dirent *)uio_iov_base(uiop); 3116 dp->d_type = DT_DIR; 3117 dp->d_fileno = dotdotfileid; 3118 dp->d_namlen = 2; 3119 dp->d_name[0] = '.'; 3120 dp->d_name[1] = '.'; 3121 dp->d_name[2] = '\0'; 3122 dp->d_reclen = DIRENT_SIZE(dp) + NFSX_HYPER; 3123 /* 3124 * Just make these offset cookie 0. 3125 */ 3126 tl = (u_int32_t *)&dp->d_name[4]; 3127 *tl++ = 0; 3128 *tl = 0; 3129 blksiz += dp->d_reclen; 3130 uio_uio_resid_add(uiop, -(dp->d_reclen)); 3131 uiop->uio_offset += dp->d_reclen; 3132 uio_iov_base_add(uiop, dp->d_reclen); 3133 uio_iov_len_add(uiop, -(dp->d_reclen)); 3134 } 3135 NFSREADDIRPLUS_ATTRBIT(&attrbits); 3136 if (gotmnton) 3137 NFSSETBIT_ATTRBIT(&attrbits, 3138 NFSATTRBIT_MOUNTEDONFILEID); 3139 } 3140 3141 /* 3142 * Loop around doing readdir rpc's of size nm_readdirsize. 3143 * The stopping criteria is EOF or buffer full. 3144 */ 3145 while (more_dirs && bigenough) { 3146 *attrflagp = 0; 3147 NFSCL_REQSTART(nd, NFSPROC_READDIRPLUS, vp); 3148 NFSM_BUILD(tl, u_int32_t *, 6 * NFSX_UNSIGNED); 3149 *tl++ = cookie.lval[0]; 3150 *tl++ = cookie.lval[1]; 3151 if (cookie.qval == 0) { 3152 *tl++ = 0; 3153 *tl++ = 0; 3154 } else { 3155 NFSLOCKNODE(dnp); 3156 *tl++ = dnp->n_cookieverf.nfsuquad[0]; 3157 *tl++ = dnp->n_cookieverf.nfsuquad[1]; 3158 NFSUNLOCKNODE(dnp); 3159 } 3160 *tl++ = txdr_unsigned(nmp->nm_readdirsize); 3161 *tl = txdr_unsigned(nmp->nm_readdirsize); 3162 if (nd->nd_flag & ND_NFSV4) { 3163 (void) nfsrv_putattrbit(nd, &attrbits); 3164 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 3165 *tl = txdr_unsigned(NFSV4OP_GETATTR); 3166 (void) nfsrv_putattrbit(nd, &dattrbits); 3167 } 3168 error = nfscl_request(nd, vp, p, cred, stuff); 3169 if (error) 3170 return (error); 3171 if (nd->nd_flag & ND_NFSV3) 3172 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 3173 if (nd->nd_repstat || error) { 3174 if (!error) 3175 error = nd->nd_repstat; 3176 goto nfsmout; 3177 } 3178 if ((nd->nd_flag & ND_NFSV3) != 0 && *attrflagp != 0) 3179 dctime = nap->na_ctime; 3180 NFSM_DISSECT(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 3181 NFSLOCKNODE(dnp); 3182 dnp->n_cookieverf.nfsuquad[0] = *tl++; 3183 dnp->n_cookieverf.nfsuquad[1] = *tl++; 3184 NFSUNLOCKNODE(dnp); 3185 more_dirs = fxdr_unsigned(int, *tl); 3186 if (!more_dirs) 3187 tryformoredirs = 0; 3188 3189 /* loop thru the dir entries, doctoring them to 4bsd form */ 3190 while (more_dirs && bigenough) { 3191 NFSM_DISSECT(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 3192 if (nd->nd_flag & ND_NFSV4) { 3193 ncookie.lval[0] = *tl++; 3194 ncookie.lval[1] = *tl++; 3195 } else { 3196 fileno = fxdr_unsigned(long, *++tl); 3197 tl++; 3198 } 3199 len = fxdr_unsigned(int, *tl); 3200 if (len <= 0 || len > NFS_MAXNAMLEN) { 3201 error = EBADRPC; 3202 goto nfsmout; 3203 } 3204 tlen = NFSM_RNDUP(len); 3205 if (tlen == len) 3206 tlen += 4; /* To ensure null termination */ 3207 left = DIRBLKSIZ - blksiz; 3208 if ((tlen + DIRHDSIZ + NFSX_HYPER) > left) { 3209 dp->d_reclen += left; 3210 uio_iov_base_add(uiop, left); 3211 uio_iov_len_add(uiop, -(left)); 3212 uio_uio_resid_add(uiop, -(left)); 3213 uiop->uio_offset += left; 3214 blksiz = 0; 3215 } 3216 if ((tlen + DIRHDSIZ + NFSX_HYPER) > uio_uio_resid(uiop)) 3217 bigenough = 0; 3218 if (bigenough) { 3219 dp = (struct dirent *)uio_iov_base(uiop); 3220 dp->d_namlen = len; 3221 dp->d_reclen = tlen + DIRHDSIZ + NFSX_HYPER; 3222 dp->d_type = DT_UNKNOWN; 3223 blksiz += dp->d_reclen; 3224 if (blksiz == DIRBLKSIZ) 3225 blksiz = 0; 3226 uio_uio_resid_add(uiop, -(DIRHDSIZ)); 3227 uiop->uio_offset += DIRHDSIZ; 3228 uio_iov_base_add(uiop, DIRHDSIZ); 3229 uio_iov_len_add(uiop, -(DIRHDSIZ)); 3230 cnp->cn_nameptr = uio_iov_base(uiop); 3231 cnp->cn_namelen = len; 3232 NFSCNHASHZERO(cnp); 3233 error = nfsm_mbufuio(nd, uiop, len); 3234 if (error) 3235 goto nfsmout; 3236 cp = uio_iov_base(uiop); 3237 tlen -= len; 3238 *cp = '\0'; 3239 cp += tlen; /* points to cookie storage */ 3240 tl2 = (u_int32_t *)cp; 3241 if (len == 2 && cnp->cn_nameptr[0] == '.' && 3242 cnp->cn_nameptr[1] == '.') 3243 isdotdot = 1; 3244 else 3245 isdotdot = 0; 3246 uio_iov_base_add(uiop, (tlen + NFSX_HYPER)); 3247 uio_iov_len_add(uiop, -(tlen + NFSX_HYPER)); 3248 uio_uio_resid_add(uiop, -(tlen + NFSX_HYPER)); 3249 uiop->uio_offset += (tlen + NFSX_HYPER); 3250 } else { 3251 error = nfsm_advance(nd, NFSM_RNDUP(len), -1); 3252 if (error) 3253 goto nfsmout; 3254 } 3255 nfhp = NULL; 3256 if (nd->nd_flag & ND_NFSV3) { 3257 NFSM_DISSECT(tl, u_int32_t *, 3*NFSX_UNSIGNED); 3258 ncookie.lval[0] = *tl++; 3259 ncookie.lval[1] = *tl++; 3260 attrflag = fxdr_unsigned(int, *tl); 3261 if (attrflag) { 3262 error = nfsm_loadattr(nd, &nfsva); 3263 if (error) 3264 goto nfsmout; 3265 } 3266 NFSM_DISSECT(tl,u_int32_t *,NFSX_UNSIGNED); 3267 if (*tl) { 3268 error = nfsm_getfh(nd, &nfhp); 3269 if (error) 3270 goto nfsmout; 3271 } 3272 if (!attrflag && nfhp != NULL) { 3273 FREE((caddr_t)nfhp, M_NFSFH); 3274 nfhp = NULL; 3275 } 3276 } else { 3277 rderr = 0; 3278 nfsva.na_mntonfileno = 0xffffffff; 3279 error = nfsv4_loadattr(nd, NULL, &nfsva, &nfhp, 3280 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0, 3281 NULL, NULL, &rderr, p, cred); 3282 if (error) 3283 goto nfsmout; 3284 } 3285 3286 if (bigenough) { 3287 if (nd->nd_flag & ND_NFSV4) { 3288 if (rderr) { 3289 dp->d_fileno = 0; 3290 } else if (gotmnton) { 3291 if (nfsva.na_mntonfileno != 0xffffffff) 3292 dp->d_fileno = nfsva.na_mntonfileno; 3293 else 3294 dp->d_fileno = nfsva.na_fileid; 3295 } else if (nfsva.na_filesid[0] == 3296 dnp->n_vattr.na_filesid[0] && 3297 nfsva.na_filesid[1] == 3298 dnp->n_vattr.na_filesid[1]) { 3299 dp->d_fileno = nfsva.na_fileid; 3300 } else { 3301 do { 3302 fakefileno--; 3303 } while (fakefileno == 3304 nfsva.na_fileid); 3305 dp->d_fileno = fakefileno; 3306 } 3307 } else { 3308 dp->d_fileno = fileno; 3309 } 3310 *tl2++ = cookiep->nfsuquad[0] = cookie.lval[0] = 3311 ncookie.lval[0]; 3312 *tl2 = cookiep->nfsuquad[1] = cookie.lval[1] = 3313 ncookie.lval[1]; 3314 3315 if (nfhp != NULL) { 3316 if (NFSRV_CMPFH(nfhp->nfh_fh, nfhp->nfh_len, 3317 dnp->n_fhp->nfh_fh, dnp->n_fhp->nfh_len)) { 3318 VREF(vp); 3319 newvp = vp; 3320 unlocknewvp = 0; 3321 FREE((caddr_t)nfhp, M_NFSFH); 3322 np = dnp; 3323 } else if (isdotdot != 0) { 3324 /* 3325 * Skip doing a nfscl_nget() call for "..". 3326 * There's a race between acquiring the nfs 3327 * node here and lookups that look for the 3328 * directory being read (in the parent). 3329 * It would try to get a lock on ".." here, 3330 * owning the lock on the directory being 3331 * read. Lookup will hold the lock on ".." 3332 * and try to acquire the lock on the 3333 * directory being read. 3334 * If the directory is unlocked/relocked, 3335 * then there is a LOR with the buflock 3336 * vp is relocked. 3337 */ 3338 free(nfhp, M_NFSFH); 3339 } else { 3340 error = nfscl_nget(vnode_mount(vp), vp, 3341 nfhp, cnp, p, &np, NULL, LK_EXCLUSIVE); 3342 if (!error) { 3343 newvp = NFSTOV(np); 3344 unlocknewvp = 1; 3345 } 3346 } 3347 nfhp = NULL; 3348 if (newvp != NULLVP) { 3349 error = nfscl_loadattrcache(&newvp, 3350 &nfsva, NULL, NULL, 0, 0); 3351 if (error) { 3352 if (unlocknewvp) 3353 vput(newvp); 3354 else 3355 vrele(newvp); 3356 goto nfsmout; 3357 } 3358 dp->d_type = 3359 vtonfs_dtype(np->n_vattr.na_type); 3360 ndp->ni_vp = newvp; 3361 NFSCNHASH(cnp, HASHINIT); 3362 if (cnp->cn_namelen <= NCHNAMLEN && 3363 (newvp->v_type != VDIR || 3364 dctime.tv_sec != 0)) { 3365 cache_enter_time(ndp->ni_dvp, 3366 ndp->ni_vp, cnp, 3367 &nfsva.na_ctime, 3368 newvp->v_type != VDIR ? NULL : 3369 &dctime); 3370 } 3371 if (unlocknewvp) 3372 vput(newvp); 3373 else 3374 vrele(newvp); 3375 newvp = NULLVP; 3376 } 3377 } 3378 } else if (nfhp != NULL) { 3379 FREE((caddr_t)nfhp, M_NFSFH); 3380 } 3381 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 3382 more_dirs = fxdr_unsigned(int, *tl); 3383 } 3384 /* 3385 * If at end of rpc data, get the eof boolean 3386 */ 3387 if (!more_dirs) { 3388 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 3389 eof = fxdr_unsigned(int, *tl); 3390 if (tryformoredirs) 3391 more_dirs = !eof; 3392 if (nd->nd_flag & ND_NFSV4) { 3393 error = nfscl_postop_attr(nd, nap, attrflagp, 3394 stuff); 3395 if (error) 3396 goto nfsmout; 3397 } 3398 } 3399 mbuf_freem(nd->nd_mrep); 3400 nd->nd_mrep = NULL; 3401 } 3402 /* 3403 * Fill last record, iff any, out to a multiple of DIRBLKSIZ 3404 * by increasing d_reclen for the last record. 3405 */ 3406 if (blksiz > 0) { 3407 left = DIRBLKSIZ - blksiz; 3408 dp->d_reclen += left; 3409 uio_iov_base_add(uiop, left); 3410 uio_iov_len_add(uiop, -(left)); 3411 uio_uio_resid_add(uiop, -(left)); 3412 uiop->uio_offset += left; 3413 } 3414 3415 /* 3416 * If returning no data, assume end of file. 3417 * If not bigenough, return not end of file, since you aren't 3418 * returning all the data 3419 * Otherwise, return the eof flag from the server. 3420 */ 3421 if (eofp != NULL) { 3422 if (tresid == uio_uio_resid(uiop)) 3423 *eofp = 1; 3424 else if (!bigenough) 3425 *eofp = 0; 3426 else 3427 *eofp = eof; 3428 } 3429 3430 /* 3431 * Add extra empty records to any remaining DIRBLKSIZ chunks. 3432 */ 3433 while (uio_uio_resid(uiop) > 0 && uio_uio_resid(uiop) != tresid) { 3434 dp = (struct dirent *)uio_iov_base(uiop); 3435 dp->d_type = DT_UNKNOWN; 3436 dp->d_fileno = 0; 3437 dp->d_namlen = 0; 3438 dp->d_name[0] = '\0'; 3439 tl = (u_int32_t *)&dp->d_name[4]; 3440 *tl++ = cookie.lval[0]; 3441 *tl = cookie.lval[1]; 3442 dp->d_reclen = DIRBLKSIZ; 3443 uio_iov_base_add(uiop, DIRBLKSIZ); 3444 uio_iov_len_add(uiop, -(DIRBLKSIZ)); 3445 uio_uio_resid_add(uiop, -(DIRBLKSIZ)); 3446 uiop->uio_offset += DIRBLKSIZ; 3447 } 3448 3449 nfsmout: 3450 if (nd->nd_mrep != NULL) 3451 mbuf_freem(nd->nd_mrep); 3452 return (error); 3453 } 3454 #endif /* !APPLE */ 3455 3456 /* 3457 * Nfs commit rpc 3458 */ 3459 APPLESTATIC int 3460 nfsrpc_commit(vnode_t vp, u_quad_t offset, int cnt, struct ucred *cred, 3461 NFSPROC_T *p, u_char *verfp, struct nfsvattr *nap, int *attrflagp, 3462 void *stuff) 3463 { 3464 u_int32_t *tl; 3465 struct nfsrv_descript nfsd, *nd = &nfsd; 3466 nfsattrbit_t attrbits; 3467 int error; 3468 3469 *attrflagp = 0; 3470 NFSCL_REQSTART(nd, NFSPROC_COMMIT, vp); 3471 NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 3472 txdr_hyper(offset, tl); 3473 tl += 2; 3474 *tl = txdr_unsigned(cnt); 3475 if (nd->nd_flag & ND_NFSV4) { 3476 /* 3477 * And do a Getattr op. 3478 */ 3479 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 3480 *tl = txdr_unsigned(NFSV4OP_GETATTR); 3481 NFSGETATTR_ATTRBIT(&attrbits); 3482 (void) nfsrv_putattrbit(nd, &attrbits); 3483 } 3484 error = nfscl_request(nd, vp, p, cred, stuff); 3485 if (error) 3486 return (error); 3487 error = nfscl_wcc_data(nd, vp, nap, attrflagp, NULL, stuff); 3488 if (!error && !nd->nd_repstat) { 3489 NFSM_DISSECT(tl, u_int32_t *, NFSX_VERF); 3490 NFSBCOPY((caddr_t)tl, verfp, NFSX_VERF); 3491 if (nd->nd_flag & ND_NFSV4) 3492 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 3493 } 3494 nfsmout: 3495 if (!error && nd->nd_repstat) 3496 error = nd->nd_repstat; 3497 mbuf_freem(nd->nd_mrep); 3498 return (error); 3499 } 3500 3501 /* 3502 * NFS byte range lock rpc. 3503 * (Mostly just calls one of the three lower level RPC routines.) 3504 */ 3505 APPLESTATIC int 3506 nfsrpc_advlock(vnode_t vp, off_t size, int op, struct flock *fl, 3507 int reclaim, struct ucred *cred, NFSPROC_T *p, void *id, int flags) 3508 { 3509 struct nfscllockowner *lp; 3510 struct nfsclclient *clp; 3511 struct nfsfh *nfhp; 3512 struct nfsrv_descript nfsd, *nd = &nfsd; 3513 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 3514 u_int64_t off, len; 3515 off_t start, end; 3516 u_int32_t clidrev = 0; 3517 int error = 0, newone = 0, expireret = 0, retrycnt, donelocally; 3518 int callcnt, dorpc; 3519 3520 /* 3521 * Convert the flock structure into a start and end and do POSIX 3522 * bounds checking. 3523 */ 3524 switch (fl->l_whence) { 3525 case SEEK_SET: 3526 case SEEK_CUR: 3527 /* 3528 * Caller is responsible for adding any necessary offset 3529 * when SEEK_CUR is used. 3530 */ 3531 start = fl->l_start; 3532 off = fl->l_start; 3533 break; 3534 case SEEK_END: 3535 start = size + fl->l_start; 3536 off = size + fl->l_start; 3537 break; 3538 default: 3539 return (EINVAL); 3540 }; 3541 if (start < 0) 3542 return (EINVAL); 3543 if (fl->l_len != 0) { 3544 end = start + fl->l_len - 1; 3545 if (end < start) 3546 return (EINVAL); 3547 } 3548 3549 len = fl->l_len; 3550 if (len == 0) 3551 len = NFS64BITSSET; 3552 retrycnt = 0; 3553 do { 3554 nd->nd_repstat = 0; 3555 if (op == F_GETLK) { 3556 error = nfscl_getcl(vp, cred, p, &clp); 3557 if (error) 3558 return (error); 3559 error = nfscl_lockt(vp, clp, off, len, fl, p, id, flags); 3560 if (!error) { 3561 clidrev = clp->nfsc_clientidrev; 3562 error = nfsrpc_lockt(nd, vp, clp, off, len, fl, cred, 3563 p, id, flags); 3564 } else if (error == -1) { 3565 error = 0; 3566 } 3567 nfscl_clientrelease(clp); 3568 } else if (op == F_UNLCK && fl->l_type == F_UNLCK) { 3569 /* 3570 * We must loop around for all lockowner cases. 3571 */ 3572 callcnt = 0; 3573 error = nfscl_getcl(vp, cred, p, &clp); 3574 if (error) 3575 return (error); 3576 do { 3577 error = nfscl_relbytelock(vp, off, len, cred, p, callcnt, 3578 clp, id, flags, &lp, &dorpc); 3579 /* 3580 * If it returns a NULL lp, we're done. 3581 */ 3582 if (lp == NULL) { 3583 if (callcnt == 0) 3584 nfscl_clientrelease(clp); 3585 else 3586 nfscl_releasealllocks(clp, vp, p, id, flags); 3587 return (error); 3588 } 3589 if (nmp->nm_clp != NULL) 3590 clidrev = nmp->nm_clp->nfsc_clientidrev; 3591 else 3592 clidrev = 0; 3593 /* 3594 * If the server doesn't support Posix lock semantics, 3595 * only allow locks on the entire file, since it won't 3596 * handle overlapping byte ranges. 3597 * There might still be a problem when a lock 3598 * upgrade/downgrade (read<->write) occurs, since the 3599 * server "might" expect an unlock first? 3600 */ 3601 if (dorpc && (lp->nfsl_open->nfso_posixlock || 3602 (off == 0 && len == NFS64BITSSET))) { 3603 /* 3604 * Since the lock records will go away, we must 3605 * wait for grace and delay here. 3606 */ 3607 do { 3608 error = nfsrpc_locku(nd, nmp, lp, off, len, 3609 NFSV4LOCKT_READ, cred, p, 0); 3610 if ((nd->nd_repstat == NFSERR_GRACE || 3611 nd->nd_repstat == NFSERR_DELAY) && 3612 error == 0) 3613 (void) nfs_catnap(PZERO, (int)nd->nd_repstat, 3614 "nfs_advlock"); 3615 } while ((nd->nd_repstat == NFSERR_GRACE || 3616 nd->nd_repstat == NFSERR_DELAY) && error == 0); 3617 } 3618 callcnt++; 3619 } while (error == 0 && nd->nd_repstat == 0); 3620 nfscl_releasealllocks(clp, vp, p, id, flags); 3621 } else if (op == F_SETLK) { 3622 error = nfscl_getbytelock(vp, off, len, fl->l_type, cred, p, 3623 NULL, 0, id, flags, NULL, NULL, &lp, &newone, &donelocally); 3624 if (error || donelocally) { 3625 return (error); 3626 } 3627 if (nmp->nm_clp != NULL) 3628 clidrev = nmp->nm_clp->nfsc_clientidrev; 3629 else 3630 clidrev = 0; 3631 nfhp = VTONFS(vp)->n_fhp; 3632 if (!lp->nfsl_open->nfso_posixlock && 3633 (off != 0 || len != NFS64BITSSET)) { 3634 error = EINVAL; 3635 } else { 3636 error = nfsrpc_lock(nd, nmp, vp, nfhp->nfh_fh, 3637 nfhp->nfh_len, lp, newone, reclaim, off, 3638 len, fl->l_type, cred, p, 0); 3639 } 3640 if (!error) 3641 error = nd->nd_repstat; 3642 nfscl_lockrelease(lp, error, newone); 3643 } else { 3644 error = EINVAL; 3645 } 3646 if (!error) 3647 error = nd->nd_repstat; 3648 if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 3649 error == NFSERR_STALEDONTRECOVER || 3650 error == NFSERR_STALECLIENTID || error == NFSERR_DELAY) { 3651 (void) nfs_catnap(PZERO, error, "nfs_advlock"); 3652 } else if ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) 3653 && clidrev != 0) { 3654 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p); 3655 retrycnt++; 3656 } 3657 } while (error == NFSERR_GRACE || 3658 error == NFSERR_STALECLIENTID || error == NFSERR_DELAY || 3659 error == NFSERR_STALEDONTRECOVER || error == NFSERR_STALESTATEID || 3660 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) && 3661 expireret == 0 && clidrev != 0 && retrycnt < 4)); 3662 if (error && retrycnt >= 4) 3663 error = EIO; 3664 return (error); 3665 } 3666 3667 /* 3668 * The lower level routine for the LockT case. 3669 */ 3670 APPLESTATIC int 3671 nfsrpc_lockt(struct nfsrv_descript *nd, vnode_t vp, 3672 struct nfsclclient *clp, u_int64_t off, u_int64_t len, struct flock *fl, 3673 struct ucred *cred, NFSPROC_T *p, void *id, int flags) 3674 { 3675 u_int32_t *tl; 3676 int error, type, size; 3677 uint8_t own[NFSV4CL_LOCKNAMELEN + NFSX_V4FHMAX]; 3678 struct nfsnode *np; 3679 3680 NFSCL_REQSTART(nd, NFSPROC_LOCKT, vp); 3681 NFSM_BUILD(tl, u_int32_t *, 7 * NFSX_UNSIGNED); 3682 if (fl->l_type == F_RDLCK) 3683 *tl++ = txdr_unsigned(NFSV4LOCKT_READ); 3684 else 3685 *tl++ = txdr_unsigned(NFSV4LOCKT_WRITE); 3686 txdr_hyper(off, tl); 3687 tl += 2; 3688 txdr_hyper(len, tl); 3689 tl += 2; 3690 *tl++ = clp->nfsc_clientid.lval[0]; 3691 *tl = clp->nfsc_clientid.lval[1]; 3692 nfscl_filllockowner(id, own, flags); 3693 np = VTONFS(vp); 3694 NFSBCOPY(np->n_fhp->nfh_fh, &own[NFSV4CL_LOCKNAMELEN], 3695 np->n_fhp->nfh_len); 3696 (void)nfsm_strtom(nd, own, NFSV4CL_LOCKNAMELEN + np->n_fhp->nfh_len); 3697 error = nfscl_request(nd, vp, p, cred, NULL); 3698 if (error) 3699 return (error); 3700 if (nd->nd_repstat == 0) { 3701 fl->l_type = F_UNLCK; 3702 } else if (nd->nd_repstat == NFSERR_DENIED) { 3703 nd->nd_repstat = 0; 3704 fl->l_whence = SEEK_SET; 3705 NFSM_DISSECT(tl, u_int32_t *, 8 * NFSX_UNSIGNED); 3706 fl->l_start = fxdr_hyper(tl); 3707 tl += 2; 3708 len = fxdr_hyper(tl); 3709 tl += 2; 3710 if (len == NFS64BITSSET) 3711 fl->l_len = 0; 3712 else 3713 fl->l_len = len; 3714 type = fxdr_unsigned(int, *tl++); 3715 if (type == NFSV4LOCKT_WRITE) 3716 fl->l_type = F_WRLCK; 3717 else 3718 fl->l_type = F_RDLCK; 3719 /* 3720 * XXX For now, I have no idea what to do with the 3721 * conflicting lock_owner, so I'll just set the pid == 0 3722 * and skip over the lock_owner. 3723 */ 3724 fl->l_pid = (pid_t)0; 3725 tl += 2; 3726 size = fxdr_unsigned(int, *tl); 3727 if (size < 0 || size > NFSV4_OPAQUELIMIT) 3728 error = EBADRPC; 3729 if (!error) 3730 error = nfsm_advance(nd, NFSM_RNDUP(size), -1); 3731 } else if (nd->nd_repstat == NFSERR_STALECLIENTID) 3732 nfscl_initiate_recovery(clp); 3733 nfsmout: 3734 mbuf_freem(nd->nd_mrep); 3735 return (error); 3736 } 3737 3738 /* 3739 * Lower level function that performs the LockU RPC. 3740 */ 3741 static int 3742 nfsrpc_locku(struct nfsrv_descript *nd, struct nfsmount *nmp, 3743 struct nfscllockowner *lp, u_int64_t off, u_int64_t len, 3744 u_int32_t type, struct ucred *cred, NFSPROC_T *p, int syscred) 3745 { 3746 u_int32_t *tl; 3747 int error; 3748 3749 nfscl_reqstart(nd, NFSPROC_LOCKU, nmp, lp->nfsl_open->nfso_fh, 3750 lp->nfsl_open->nfso_fhlen, NULL); 3751 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID + 6 * NFSX_UNSIGNED); 3752 *tl++ = txdr_unsigned(type); 3753 *tl = txdr_unsigned(lp->nfsl_seqid); 3754 if (nfstest_outofseq && 3755 (arc4random() % nfstest_outofseq) == 0) 3756 *tl = txdr_unsigned(lp->nfsl_seqid + 1); 3757 tl++; 3758 *tl++ = lp->nfsl_stateid.seqid; 3759 *tl++ = lp->nfsl_stateid.other[0]; 3760 *tl++ = lp->nfsl_stateid.other[1]; 3761 *tl++ = lp->nfsl_stateid.other[2]; 3762 txdr_hyper(off, tl); 3763 tl += 2; 3764 txdr_hyper(len, tl); 3765 if (syscred) 3766 nd->nd_flag |= ND_USEGSSNAME; 3767 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 3768 NFS_PROG, NFS_VER4, NULL, 1, NULL); 3769 NFSCL_INCRSEQID(lp->nfsl_seqid, nd); 3770 if (error) 3771 return (error); 3772 if (nd->nd_repstat == 0) { 3773 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID); 3774 lp->nfsl_stateid.seqid = *tl++; 3775 lp->nfsl_stateid.other[0] = *tl++; 3776 lp->nfsl_stateid.other[1] = *tl++; 3777 lp->nfsl_stateid.other[2] = *tl; 3778 } else if (nd->nd_repstat == NFSERR_STALESTATEID) 3779 nfscl_initiate_recovery(lp->nfsl_open->nfso_own->nfsow_clp); 3780 nfsmout: 3781 mbuf_freem(nd->nd_mrep); 3782 return (error); 3783 } 3784 3785 /* 3786 * The actual Lock RPC. 3787 */ 3788 APPLESTATIC int 3789 nfsrpc_lock(struct nfsrv_descript *nd, struct nfsmount *nmp, vnode_t vp, 3790 u_int8_t *nfhp, int fhlen, struct nfscllockowner *lp, int newone, 3791 int reclaim, u_int64_t off, u_int64_t len, short type, struct ucred *cred, 3792 NFSPROC_T *p, int syscred) 3793 { 3794 u_int32_t *tl; 3795 int error, size; 3796 uint8_t own[NFSV4CL_LOCKNAMELEN + NFSX_V4FHMAX]; 3797 3798 nfscl_reqstart(nd, NFSPROC_LOCK, nmp, nfhp, fhlen, NULL); 3799 NFSM_BUILD(tl, u_int32_t *, 7 * NFSX_UNSIGNED); 3800 if (type == F_RDLCK) 3801 *tl++ = txdr_unsigned(NFSV4LOCKT_READ); 3802 else 3803 *tl++ = txdr_unsigned(NFSV4LOCKT_WRITE); 3804 *tl++ = txdr_unsigned(reclaim); 3805 txdr_hyper(off, tl); 3806 tl += 2; 3807 txdr_hyper(len, tl); 3808 tl += 2; 3809 if (newone) { 3810 *tl = newnfs_true; 3811 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID + 3812 2 * NFSX_UNSIGNED + NFSX_HYPER); 3813 *tl++ = txdr_unsigned(lp->nfsl_open->nfso_own->nfsow_seqid); 3814 *tl++ = lp->nfsl_open->nfso_stateid.seqid; 3815 *tl++ = lp->nfsl_open->nfso_stateid.other[0]; 3816 *tl++ = lp->nfsl_open->nfso_stateid.other[1]; 3817 *tl++ = lp->nfsl_open->nfso_stateid.other[2]; 3818 *tl++ = txdr_unsigned(lp->nfsl_seqid); 3819 *tl++ = lp->nfsl_open->nfso_own->nfsow_clp->nfsc_clientid.lval[0]; 3820 *tl = lp->nfsl_open->nfso_own->nfsow_clp->nfsc_clientid.lval[1]; 3821 NFSBCOPY(lp->nfsl_owner, own, NFSV4CL_LOCKNAMELEN); 3822 NFSBCOPY(nfhp, &own[NFSV4CL_LOCKNAMELEN], fhlen); 3823 (void)nfsm_strtom(nd, own, NFSV4CL_LOCKNAMELEN + fhlen); 3824 } else { 3825 *tl = newnfs_false; 3826 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID + NFSX_UNSIGNED); 3827 *tl++ = lp->nfsl_stateid.seqid; 3828 *tl++ = lp->nfsl_stateid.other[0]; 3829 *tl++ = lp->nfsl_stateid.other[1]; 3830 *tl++ = lp->nfsl_stateid.other[2]; 3831 *tl = txdr_unsigned(lp->nfsl_seqid); 3832 if (nfstest_outofseq && 3833 (arc4random() % nfstest_outofseq) == 0) 3834 *tl = txdr_unsigned(lp->nfsl_seqid + 1); 3835 } 3836 if (syscred) 3837 nd->nd_flag |= ND_USEGSSNAME; 3838 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, vp, p, cred, 3839 NFS_PROG, NFS_VER4, NULL, 1, NULL); 3840 if (error) 3841 return (error); 3842 if (newone) 3843 NFSCL_INCRSEQID(lp->nfsl_open->nfso_own->nfsow_seqid, nd); 3844 NFSCL_INCRSEQID(lp->nfsl_seqid, nd); 3845 if (nd->nd_repstat == 0) { 3846 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID); 3847 lp->nfsl_stateid.seqid = *tl++; 3848 lp->nfsl_stateid.other[0] = *tl++; 3849 lp->nfsl_stateid.other[1] = *tl++; 3850 lp->nfsl_stateid.other[2] = *tl; 3851 } else if (nd->nd_repstat == NFSERR_DENIED) { 3852 NFSM_DISSECT(tl, u_int32_t *, 8 * NFSX_UNSIGNED); 3853 size = fxdr_unsigned(int, *(tl + 7)); 3854 if (size < 0 || size > NFSV4_OPAQUELIMIT) 3855 error = EBADRPC; 3856 if (!error) 3857 error = nfsm_advance(nd, NFSM_RNDUP(size), -1); 3858 } else if (nd->nd_repstat == NFSERR_STALESTATEID) 3859 nfscl_initiate_recovery(lp->nfsl_open->nfso_own->nfsow_clp); 3860 nfsmout: 3861 mbuf_freem(nd->nd_mrep); 3862 return (error); 3863 } 3864 3865 /* 3866 * nfs statfs rpc 3867 * (always called with the vp for the mount point) 3868 */ 3869 APPLESTATIC int 3870 nfsrpc_statfs(vnode_t vp, struct nfsstatfs *sbp, struct nfsfsinfo *fsp, 3871 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, 3872 void *stuff) 3873 { 3874 u_int32_t *tl = NULL; 3875 struct nfsrv_descript nfsd, *nd = &nfsd; 3876 struct nfsmount *nmp; 3877 nfsattrbit_t attrbits; 3878 int error; 3879 3880 *attrflagp = 0; 3881 nmp = VFSTONFS(vnode_mount(vp)); 3882 if (NFSHASNFSV4(nmp)) { 3883 /* 3884 * For V4, you actually do a getattr. 3885 */ 3886 NFSCL_REQSTART(nd, NFSPROC_GETATTR, vp); 3887 NFSSTATFS_GETATTRBIT(&attrbits); 3888 (void) nfsrv_putattrbit(nd, &attrbits); 3889 nd->nd_flag |= ND_USEGSSNAME; 3890 error = nfscl_request(nd, vp, p, cred, stuff); 3891 if (error) 3892 return (error); 3893 if (nd->nd_repstat == 0) { 3894 error = nfsv4_loadattr(nd, NULL, nap, NULL, NULL, 0, 3895 NULL, NULL, sbp, fsp, NULL, 0, NULL, NULL, NULL, p, 3896 cred); 3897 if (!error) { 3898 nmp->nm_fsid[0] = nap->na_filesid[0]; 3899 nmp->nm_fsid[1] = nap->na_filesid[1]; 3900 NFSSETHASSETFSID(nmp); 3901 *attrflagp = 1; 3902 } 3903 } else { 3904 error = nd->nd_repstat; 3905 } 3906 if (error) 3907 goto nfsmout; 3908 } else { 3909 NFSCL_REQSTART(nd, NFSPROC_FSSTAT, vp); 3910 error = nfscl_request(nd, vp, p, cred, stuff); 3911 if (error) 3912 return (error); 3913 if (nd->nd_flag & ND_NFSV3) { 3914 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 3915 if (error) 3916 goto nfsmout; 3917 } 3918 if (nd->nd_repstat) { 3919 error = nd->nd_repstat; 3920 goto nfsmout; 3921 } 3922 NFSM_DISSECT(tl, u_int32_t *, 3923 NFSX_STATFS(nd->nd_flag & ND_NFSV3)); 3924 } 3925 if (NFSHASNFSV3(nmp)) { 3926 sbp->sf_tbytes = fxdr_hyper(tl); tl += 2; 3927 sbp->sf_fbytes = fxdr_hyper(tl); tl += 2; 3928 sbp->sf_abytes = fxdr_hyper(tl); tl += 2; 3929 sbp->sf_tfiles = fxdr_hyper(tl); tl += 2; 3930 sbp->sf_ffiles = fxdr_hyper(tl); tl += 2; 3931 sbp->sf_afiles = fxdr_hyper(tl); tl += 2; 3932 sbp->sf_invarsec = fxdr_unsigned(u_int32_t, *tl); 3933 } else if (NFSHASNFSV4(nmp) == 0) { 3934 sbp->sf_tsize = fxdr_unsigned(u_int32_t, *tl++); 3935 sbp->sf_bsize = fxdr_unsigned(u_int32_t, *tl++); 3936 sbp->sf_blocks = fxdr_unsigned(u_int32_t, *tl++); 3937 sbp->sf_bfree = fxdr_unsigned(u_int32_t, *tl++); 3938 sbp->sf_bavail = fxdr_unsigned(u_int32_t, *tl); 3939 } 3940 nfsmout: 3941 mbuf_freem(nd->nd_mrep); 3942 return (error); 3943 } 3944 3945 /* 3946 * nfs pathconf rpc 3947 */ 3948 APPLESTATIC int 3949 nfsrpc_pathconf(vnode_t vp, struct nfsv3_pathconf *pc, 3950 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, 3951 void *stuff) 3952 { 3953 struct nfsrv_descript nfsd, *nd = &nfsd; 3954 struct nfsmount *nmp; 3955 u_int32_t *tl; 3956 nfsattrbit_t attrbits; 3957 int error; 3958 3959 *attrflagp = 0; 3960 nmp = VFSTONFS(vnode_mount(vp)); 3961 if (NFSHASNFSV4(nmp)) { 3962 /* 3963 * For V4, you actually do a getattr. 3964 */ 3965 NFSCL_REQSTART(nd, NFSPROC_GETATTR, vp); 3966 NFSPATHCONF_GETATTRBIT(&attrbits); 3967 (void) nfsrv_putattrbit(nd, &attrbits); 3968 nd->nd_flag |= ND_USEGSSNAME; 3969 error = nfscl_request(nd, vp, p, cred, stuff); 3970 if (error) 3971 return (error); 3972 if (nd->nd_repstat == 0) { 3973 error = nfsv4_loadattr(nd, NULL, nap, NULL, NULL, 0, 3974 pc, NULL, NULL, NULL, NULL, 0, NULL, NULL, NULL, p, 3975 cred); 3976 if (!error) 3977 *attrflagp = 1; 3978 } else { 3979 error = nd->nd_repstat; 3980 } 3981 } else { 3982 NFSCL_REQSTART(nd, NFSPROC_PATHCONF, vp); 3983 error = nfscl_request(nd, vp, p, cred, stuff); 3984 if (error) 3985 return (error); 3986 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 3987 if (nd->nd_repstat && !error) 3988 error = nd->nd_repstat; 3989 if (!error) { 3990 NFSM_DISSECT(tl, u_int32_t *, NFSX_V3PATHCONF); 3991 pc->pc_linkmax = fxdr_unsigned(u_int32_t, *tl++); 3992 pc->pc_namemax = fxdr_unsigned(u_int32_t, *tl++); 3993 pc->pc_notrunc = fxdr_unsigned(u_int32_t, *tl++); 3994 pc->pc_chownrestricted = 3995 fxdr_unsigned(u_int32_t, *tl++); 3996 pc->pc_caseinsensitive = 3997 fxdr_unsigned(u_int32_t, *tl++); 3998 pc->pc_casepreserving = fxdr_unsigned(u_int32_t, *tl); 3999 } 4000 } 4001 nfsmout: 4002 mbuf_freem(nd->nd_mrep); 4003 return (error); 4004 } 4005 4006 /* 4007 * nfs version 3 fsinfo rpc call 4008 */ 4009 APPLESTATIC int 4010 nfsrpc_fsinfo(vnode_t vp, struct nfsfsinfo *fsp, struct ucred *cred, 4011 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff) 4012 { 4013 u_int32_t *tl; 4014 struct nfsrv_descript nfsd, *nd = &nfsd; 4015 int error; 4016 4017 *attrflagp = 0; 4018 NFSCL_REQSTART(nd, NFSPROC_FSINFO, vp); 4019 error = nfscl_request(nd, vp, p, cred, stuff); 4020 if (error) 4021 return (error); 4022 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 4023 if (nd->nd_repstat && !error) 4024 error = nd->nd_repstat; 4025 if (!error) { 4026 NFSM_DISSECT(tl, u_int32_t *, NFSX_V3FSINFO); 4027 fsp->fs_rtmax = fxdr_unsigned(u_int32_t, *tl++); 4028 fsp->fs_rtpref = fxdr_unsigned(u_int32_t, *tl++); 4029 fsp->fs_rtmult = fxdr_unsigned(u_int32_t, *tl++); 4030 fsp->fs_wtmax = fxdr_unsigned(u_int32_t, *tl++); 4031 fsp->fs_wtpref = fxdr_unsigned(u_int32_t, *tl++); 4032 fsp->fs_wtmult = fxdr_unsigned(u_int32_t, *tl++); 4033 fsp->fs_dtpref = fxdr_unsigned(u_int32_t, *tl++); 4034 fsp->fs_maxfilesize = fxdr_hyper(tl); 4035 tl += 2; 4036 fxdr_nfsv3time(tl, &fsp->fs_timedelta); 4037 tl += 2; 4038 fsp->fs_properties = fxdr_unsigned(u_int32_t, *tl); 4039 } 4040 nfsmout: 4041 mbuf_freem(nd->nd_mrep); 4042 return (error); 4043 } 4044 4045 /* 4046 * This function performs the Renew RPC. 4047 */ 4048 APPLESTATIC int 4049 nfsrpc_renew(struct nfsclclient *clp, struct ucred *cred, NFSPROC_T *p) 4050 { 4051 u_int32_t *tl; 4052 struct nfsrv_descript nfsd; 4053 struct nfsrv_descript *nd = &nfsd; 4054 struct nfsmount *nmp; 4055 int error; 4056 4057 nmp = clp->nfsc_nmp; 4058 if (nmp == NULL) 4059 return (0); 4060 nfscl_reqstart(nd, NFSPROC_RENEW, nmp, NULL, 0, NULL); 4061 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 4062 *tl++ = clp->nfsc_clientid.lval[0]; 4063 *tl = clp->nfsc_clientid.lval[1]; 4064 nd->nd_flag |= ND_USEGSSNAME; 4065 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 4066 NFS_PROG, NFS_VER4, NULL, 1, NULL); 4067 if (error) 4068 return (error); 4069 error = nd->nd_repstat; 4070 mbuf_freem(nd->nd_mrep); 4071 return (error); 4072 } 4073 4074 /* 4075 * This function performs the Releaselockowner RPC. 4076 */ 4077 APPLESTATIC int 4078 nfsrpc_rellockown(struct nfsmount *nmp, struct nfscllockowner *lp, 4079 uint8_t *fh, int fhlen, struct ucred *cred, NFSPROC_T *p) 4080 { 4081 struct nfsrv_descript nfsd, *nd = &nfsd; 4082 u_int32_t *tl; 4083 int error; 4084 uint8_t own[NFSV4CL_LOCKNAMELEN + NFSX_V4FHMAX]; 4085 4086 nfscl_reqstart(nd, NFSPROC_RELEASELCKOWN, nmp, NULL, 0, NULL); 4087 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 4088 *tl++ = nmp->nm_clp->nfsc_clientid.lval[0]; 4089 *tl = nmp->nm_clp->nfsc_clientid.lval[1]; 4090 NFSBCOPY(lp->nfsl_owner, own, NFSV4CL_LOCKNAMELEN); 4091 NFSBCOPY(fh, &own[NFSV4CL_LOCKNAMELEN], fhlen); 4092 (void)nfsm_strtom(nd, own, NFSV4CL_LOCKNAMELEN + fhlen); 4093 nd->nd_flag |= ND_USEGSSNAME; 4094 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 4095 NFS_PROG, NFS_VER4, NULL, 1, NULL); 4096 if (error) 4097 return (error); 4098 error = nd->nd_repstat; 4099 mbuf_freem(nd->nd_mrep); 4100 return (error); 4101 } 4102 4103 /* 4104 * This function performs the Compound to get the mount pt FH. 4105 */ 4106 APPLESTATIC int 4107 nfsrpc_getdirpath(struct nfsmount *nmp, u_char *dirpath, struct ucred *cred, 4108 NFSPROC_T *p) 4109 { 4110 u_int32_t *tl; 4111 struct nfsrv_descript nfsd; 4112 struct nfsrv_descript *nd = &nfsd; 4113 u_char *cp, *cp2; 4114 int error, cnt, len, setnil; 4115 u_int32_t *opcntp; 4116 4117 nfscl_reqstart(nd, NFSPROC_PUTROOTFH, nmp, NULL, 0, &opcntp); 4118 cp = dirpath; 4119 cnt = 0; 4120 do { 4121 setnil = 0; 4122 while (*cp == '/') 4123 cp++; 4124 cp2 = cp; 4125 while (*cp2 != '\0' && *cp2 != '/') 4126 cp2++; 4127 if (*cp2 == '/') { 4128 setnil = 1; 4129 *cp2 = '\0'; 4130 } 4131 if (cp2 != cp) { 4132 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 4133 *tl = txdr_unsigned(NFSV4OP_LOOKUP); 4134 nfsm_strtom(nd, cp, strlen(cp)); 4135 cnt++; 4136 } 4137 if (setnil) 4138 *cp2++ = '/'; 4139 cp = cp2; 4140 } while (*cp != '\0'); 4141 *opcntp = txdr_unsigned(2 + cnt); 4142 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 4143 *tl = txdr_unsigned(NFSV4OP_GETFH); 4144 nd->nd_flag |= ND_USEGSSNAME; 4145 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 4146 NFS_PROG, NFS_VER4, NULL, 1, NULL); 4147 if (error) 4148 return (error); 4149 if (nd->nd_repstat == 0) { 4150 NFSM_DISSECT(tl, u_int32_t *, (3 + 2 * cnt) * NFSX_UNSIGNED); 4151 tl += (2 + 2 * cnt); 4152 if ((len = fxdr_unsigned(int, *tl)) <= 0 || 4153 len > NFSX_FHMAX) { 4154 nd->nd_repstat = NFSERR_BADXDR; 4155 } else { 4156 nd->nd_repstat = nfsrv_mtostr(nd, nmp->nm_fh, len); 4157 if (nd->nd_repstat == 0) 4158 nmp->nm_fhsize = len; 4159 } 4160 } 4161 error = nd->nd_repstat; 4162 nfsmout: 4163 mbuf_freem(nd->nd_mrep); 4164 return (error); 4165 } 4166 4167 /* 4168 * This function performs the Delegreturn RPC. 4169 */ 4170 APPLESTATIC int 4171 nfsrpc_delegreturn(struct nfscldeleg *dp, struct ucred *cred, 4172 struct nfsmount *nmp, NFSPROC_T *p, int syscred) 4173 { 4174 u_int32_t *tl; 4175 struct nfsrv_descript nfsd; 4176 struct nfsrv_descript *nd = &nfsd; 4177 int error; 4178 4179 nfscl_reqstart(nd, NFSPROC_DELEGRETURN, nmp, dp->nfsdl_fh, 4180 dp->nfsdl_fhlen, NULL); 4181 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID); 4182 *tl++ = dp->nfsdl_stateid.seqid; 4183 *tl++ = dp->nfsdl_stateid.other[0]; 4184 *tl++ = dp->nfsdl_stateid.other[1]; 4185 *tl = dp->nfsdl_stateid.other[2]; 4186 if (syscred) 4187 nd->nd_flag |= ND_USEGSSNAME; 4188 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 4189 NFS_PROG, NFS_VER4, NULL, 1, NULL); 4190 if (error) 4191 return (error); 4192 error = nd->nd_repstat; 4193 mbuf_freem(nd->nd_mrep); 4194 return (error); 4195 } 4196 4197 /* 4198 * nfs getacl call. 4199 */ 4200 APPLESTATIC int 4201 nfsrpc_getacl(vnode_t vp, struct ucred *cred, NFSPROC_T *p, 4202 struct acl *aclp, void *stuff) 4203 { 4204 struct nfsrv_descript nfsd, *nd = &nfsd; 4205 int error; 4206 nfsattrbit_t attrbits; 4207 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 4208 4209 if (nfsrv_useacl == 0 || !NFSHASNFSV4(nmp)) 4210 return (EOPNOTSUPP); 4211 NFSCL_REQSTART(nd, NFSPROC_GETACL, vp); 4212 NFSZERO_ATTRBIT(&attrbits); 4213 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_ACL); 4214 (void) nfsrv_putattrbit(nd, &attrbits); 4215 error = nfscl_request(nd, vp, p, cred, stuff); 4216 if (error) 4217 return (error); 4218 if (!nd->nd_repstat) 4219 error = nfsv4_loadattr(nd, vp, NULL, NULL, NULL, 0, NULL, 4220 NULL, NULL, NULL, aclp, 0, NULL, NULL, NULL, p, cred); 4221 else 4222 error = nd->nd_repstat; 4223 mbuf_freem(nd->nd_mrep); 4224 return (error); 4225 } 4226 4227 /* 4228 * nfs setacl call. 4229 */ 4230 APPLESTATIC int 4231 nfsrpc_setacl(vnode_t vp, struct ucred *cred, NFSPROC_T *p, 4232 struct acl *aclp, void *stuff) 4233 { 4234 int error; 4235 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 4236 4237 if (nfsrv_useacl == 0 || !NFSHASNFSV4(nmp)) 4238 return (EOPNOTSUPP); 4239 error = nfsrpc_setattr(vp, NULL, aclp, cred, p, NULL, NULL, stuff); 4240 return (error); 4241 } 4242 4243 /* 4244 * nfs setacl call. 4245 */ 4246 static int 4247 nfsrpc_setaclrpc(vnode_t vp, struct ucred *cred, NFSPROC_T *p, 4248 struct acl *aclp, nfsv4stateid_t *stateidp, void *stuff) 4249 { 4250 struct nfsrv_descript nfsd, *nd = &nfsd; 4251 int error; 4252 nfsattrbit_t attrbits; 4253 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 4254 4255 if (!NFSHASNFSV4(nmp)) 4256 return (EOPNOTSUPP); 4257 NFSCL_REQSTART(nd, NFSPROC_SETACL, vp); 4258 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID); 4259 NFSZERO_ATTRBIT(&attrbits); 4260 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_ACL); 4261 (void) nfsv4_fillattr(nd, vnode_mount(vp), vp, aclp, NULL, NULL, 0, 4262 &attrbits, NULL, NULL, 0, 0, 0, 0, (uint64_t)0); 4263 error = nfscl_request(nd, vp, p, cred, stuff); 4264 if (error) 4265 return (error); 4266 /* Don't care about the pre/postop attributes */ 4267 mbuf_freem(nd->nd_mrep); 4268 return (nd->nd_repstat); 4269 }
Cache object: 0e45e9239d44781db91691d22e61acdd
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