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 /* 71 * nfscl_getsameserver() can return one of three values: 72 * NFSDSP_USETHISSESSION - Use this session for the DS. 73 * NFSDSP_SEQTHISSESSION - Use the nfsclds_sequence field of this dsp for new 74 * session. 75 * NFSDSP_NOTFOUND - No matching server was found. 76 */ 77 enum nfsclds_state { 78 NFSDSP_USETHISSESSION = 0, 79 NFSDSP_SEQTHISSESSION = 1, 80 NFSDSP_NOTFOUND = 2, 81 }; 82 83 static int nfsrpc_setattrrpc(vnode_t , struct vattr *, nfsv4stateid_t *, 84 struct ucred *, NFSPROC_T *, struct nfsvattr *, int *, void *); 85 static int nfsrpc_readrpc(vnode_t , struct uio *, struct ucred *, 86 nfsv4stateid_t *, NFSPROC_T *, struct nfsvattr *, int *, void *); 87 static int nfsrpc_writerpc(vnode_t , struct uio *, int *, int *, 88 struct ucred *, nfsv4stateid_t *, NFSPROC_T *, struct nfsvattr *, int *, 89 void *); 90 static int nfsrpc_createv23(vnode_t , char *, int, struct vattr *, 91 nfsquad_t, int, struct ucred *, NFSPROC_T *, struct nfsvattr *, 92 struct nfsvattr *, struct nfsfh **, int *, int *, void *); 93 static int nfsrpc_createv4(vnode_t , char *, int, struct vattr *, 94 nfsquad_t, int, struct nfsclowner *, struct nfscldeleg **, struct ucred *, 95 NFSPROC_T *, struct nfsvattr *, struct nfsvattr *, struct nfsfh **, int *, 96 int *, void *, int *); 97 static int nfsrpc_locku(struct nfsrv_descript *, struct nfsmount *, 98 struct nfscllockowner *, u_int64_t, u_int64_t, 99 u_int32_t, struct ucred *, NFSPROC_T *, int); 100 static int nfsrpc_setaclrpc(vnode_t, struct ucred *, NFSPROC_T *, 101 struct acl *, nfsv4stateid_t *, void *); 102 static int nfsrpc_getlayout(struct nfsmount *, vnode_t, struct nfsfh *, int, 103 uint32_t *, nfsv4stateid_t *, uint64_t, struct nfscllayout **, 104 struct ucred *, NFSPROC_T *); 105 static int nfsrpc_fillsa(struct nfsmount *, struct sockaddr_storage *, 106 struct nfsclds **, NFSPROC_T *); 107 static void nfscl_initsessionslots(struct nfsclsession *); 108 static int nfscl_doflayoutio(vnode_t, struct uio *, int *, int *, int *, 109 nfsv4stateid_t *, int, struct nfscldevinfo *, struct nfscllayout *, 110 struct nfsclflayout *, uint64_t, uint64_t, struct ucred *, NFSPROC_T *); 111 static int nfsrpc_readds(vnode_t, struct uio *, nfsv4stateid_t *, int *, 112 struct nfsclds *, uint64_t, int, struct nfsfh *, struct ucred *, 113 NFSPROC_T *); 114 static int nfsrpc_writeds(vnode_t, struct uio *, int *, int *, 115 nfsv4stateid_t *, struct nfsclds *, uint64_t, int, 116 struct nfsfh *, int, struct ucred *, NFSPROC_T *); 117 static enum nfsclds_state nfscl_getsameserver(struct nfsmount *, 118 struct nfsclds *, struct nfsclds **); 119 #ifdef notyet 120 static int nfsrpc_commitds(vnode_t, uint64_t, int, struct nfsclds *, 121 struct nfsfh *, struct ucred *, NFSPROC_T *, void *); 122 #endif 123 124 /* 125 * nfs null call from vfs. 126 */ 127 APPLESTATIC int 128 nfsrpc_null(vnode_t vp, struct ucred *cred, NFSPROC_T *p) 129 { 130 int error; 131 struct nfsrv_descript nfsd, *nd = &nfsd; 132 133 NFSCL_REQSTART(nd, NFSPROC_NULL, vp); 134 error = nfscl_request(nd, vp, p, cred, NULL); 135 if (nd->nd_repstat && !error) 136 error = nd->nd_repstat; 137 mbuf_freem(nd->nd_mrep); 138 return (error); 139 } 140 141 /* 142 * nfs access rpc op. 143 * For nfs version 3 and 4, use the access rpc to check accessibility. If file 144 * modes are changed on the server, accesses might still fail later. 145 */ 146 APPLESTATIC int 147 nfsrpc_access(vnode_t vp, int acmode, struct ucred *cred, 148 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp) 149 { 150 int error; 151 u_int32_t mode, rmode; 152 153 if (acmode & VREAD) 154 mode = NFSACCESS_READ; 155 else 156 mode = 0; 157 if (vnode_vtype(vp) == VDIR) { 158 if (acmode & VWRITE) 159 mode |= (NFSACCESS_MODIFY | NFSACCESS_EXTEND | 160 NFSACCESS_DELETE); 161 if (acmode & VEXEC) 162 mode |= NFSACCESS_LOOKUP; 163 } else { 164 if (acmode & VWRITE) 165 mode |= (NFSACCESS_MODIFY | NFSACCESS_EXTEND); 166 if (acmode & VEXEC) 167 mode |= NFSACCESS_EXECUTE; 168 } 169 170 /* 171 * Now, just call nfsrpc_accessrpc() to do the actual RPC. 172 */ 173 error = nfsrpc_accessrpc(vp, mode, cred, p, nap, attrflagp, &rmode, 174 NULL); 175 176 /* 177 * The NFS V3 spec does not clarify whether or not 178 * the returned access bits can be a superset of 179 * the ones requested, so... 180 */ 181 if (!error && (rmode & mode) != mode) 182 error = EACCES; 183 return (error); 184 } 185 186 /* 187 * The actual rpc, separated out for Darwin. 188 */ 189 APPLESTATIC int 190 nfsrpc_accessrpc(vnode_t vp, u_int32_t mode, struct ucred *cred, 191 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, u_int32_t *rmodep, 192 void *stuff) 193 { 194 u_int32_t *tl; 195 u_int32_t supported, rmode; 196 int error; 197 struct nfsrv_descript nfsd, *nd = &nfsd; 198 nfsattrbit_t attrbits; 199 200 *attrflagp = 0; 201 supported = mode; 202 NFSCL_REQSTART(nd, NFSPROC_ACCESS, vp); 203 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 204 *tl = txdr_unsigned(mode); 205 if (nd->nd_flag & ND_NFSV4) { 206 /* 207 * And do a Getattr op. 208 */ 209 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 210 *tl = txdr_unsigned(NFSV4OP_GETATTR); 211 NFSGETATTR_ATTRBIT(&attrbits); 212 (void) nfsrv_putattrbit(nd, &attrbits); 213 } 214 error = nfscl_request(nd, vp, p, cred, stuff); 215 if (error) 216 return (error); 217 if (nd->nd_flag & ND_NFSV3) { 218 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 219 if (error) 220 goto nfsmout; 221 } 222 if (!nd->nd_repstat) { 223 if (nd->nd_flag & ND_NFSV4) { 224 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 225 supported = fxdr_unsigned(u_int32_t, *tl++); 226 } else { 227 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 228 } 229 rmode = fxdr_unsigned(u_int32_t, *tl); 230 if (nd->nd_flag & ND_NFSV4) 231 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 232 233 /* 234 * It's not obvious what should be done about 235 * unsupported access modes. For now, be paranoid 236 * and clear the unsupported ones. 237 */ 238 rmode &= supported; 239 *rmodep = rmode; 240 } else 241 error = nd->nd_repstat; 242 nfsmout: 243 mbuf_freem(nd->nd_mrep); 244 return (error); 245 } 246 247 /* 248 * nfs open rpc 249 */ 250 APPLESTATIC int 251 nfsrpc_open(vnode_t vp, int amode, struct ucred *cred, NFSPROC_T *p) 252 { 253 struct nfsclopen *op; 254 struct nfscldeleg *dp; 255 struct nfsfh *nfhp; 256 struct nfsnode *np = VTONFS(vp); 257 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 258 u_int32_t mode, clidrev; 259 int ret, newone, error, expireret = 0, retrycnt; 260 261 /* 262 * For NFSv4, Open Ops are only done on Regular Files. 263 */ 264 if (vnode_vtype(vp) != VREG) 265 return (0); 266 mode = 0; 267 if (amode & FREAD) 268 mode |= NFSV4OPEN_ACCESSREAD; 269 if (amode & FWRITE) 270 mode |= NFSV4OPEN_ACCESSWRITE; 271 nfhp = np->n_fhp; 272 273 retrycnt = 0; 274 #ifdef notdef 275 { char name[100]; int namel; 276 namel = (np->n_v4->n4_namelen < 100) ? np->n_v4->n4_namelen : 99; 277 bcopy(NFS4NODENAME(np->n_v4), name, namel); 278 name[namel] = '\0'; 279 printf("rpcopen p=0x%x name=%s",p->p_pid,name); 280 if (nfhp->nfh_len > 0) printf(" fh=0x%x\n",nfhp->nfh_fh[12]); 281 else printf(" fhl=0\n"); 282 } 283 #endif 284 do { 285 dp = NULL; 286 error = nfscl_open(vp, nfhp->nfh_fh, nfhp->nfh_len, mode, 1, 287 cred, p, NULL, &op, &newone, &ret, 1); 288 if (error) { 289 return (error); 290 } 291 if (nmp->nm_clp != NULL) 292 clidrev = nmp->nm_clp->nfsc_clientidrev; 293 else 294 clidrev = 0; 295 if (ret == NFSCLOPEN_DOOPEN) { 296 if (np->n_v4 != NULL) { 297 error = nfsrpc_openrpc(nmp, vp, np->n_v4->n4_data, 298 np->n_v4->n4_fhlen, np->n_fhp->nfh_fh, 299 np->n_fhp->nfh_len, mode, op, 300 NFS4NODENAME(np->n_v4), np->n_v4->n4_namelen, &dp, 301 0, 0x0, cred, p, 0, 0); 302 if (dp != NULL) { 303 #ifdef APPLE 304 OSBitAndAtomic((int32_t)~NDELEGMOD, (UInt32 *)&np->n_flag); 305 #else 306 NFSLOCKNODE(np); 307 np->n_flag &= ~NDELEGMOD; 308 /* 309 * Invalidate the attribute cache, so that 310 * attributes that pre-date the issue of a 311 * delegation are not cached, since the 312 * cached attributes will remain valid while 313 * the delegation is held. 314 */ 315 NFSINVALATTRCACHE(np); 316 NFSUNLOCKNODE(np); 317 #endif 318 (void) nfscl_deleg(nmp->nm_mountp, 319 op->nfso_own->nfsow_clp, 320 nfhp->nfh_fh, nfhp->nfh_len, cred, p, &dp); 321 } 322 } else { 323 error = EIO; 324 } 325 newnfs_copyincred(cred, &op->nfso_cred); 326 } else if (ret == NFSCLOPEN_SETCRED) 327 /* 328 * This is a new local open on a delegation. It needs 329 * to have credentials so that an open can be done 330 * against the server during recovery. 331 */ 332 newnfs_copyincred(cred, &op->nfso_cred); 333 334 /* 335 * nfso_opencnt is the count of how many VOP_OPEN()s have 336 * been done on this Open successfully and a VOP_CLOSE() 337 * is expected for each of these. 338 * If error is non-zero, don't increment it, since the Open 339 * hasn't succeeded yet. 340 */ 341 if (!error) 342 op->nfso_opencnt++; 343 nfscl_openrelease(op, error, newone); 344 if (error == NFSERR_GRACE || error == NFSERR_STALECLIENTID || 345 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 346 error == NFSERR_BADSESSION) { 347 (void) nfs_catnap(PZERO, error, "nfs_open"); 348 } else if ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) 349 && clidrev != 0) { 350 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p); 351 retrycnt++; 352 } 353 } while (error == NFSERR_GRACE || error == NFSERR_STALECLIENTID || 354 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 355 error == NFSERR_BADSESSION || 356 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) && 357 expireret == 0 && clidrev != 0 && retrycnt < 4)); 358 if (error && retrycnt >= 4) 359 error = EIO; 360 return (error); 361 } 362 363 /* 364 * the actual open rpc 365 */ 366 APPLESTATIC int 367 nfsrpc_openrpc(struct nfsmount *nmp, vnode_t vp, u_int8_t *nfhp, int fhlen, 368 u_int8_t *newfhp, int newfhlen, u_int32_t mode, struct nfsclopen *op, 369 u_int8_t *name, int namelen, struct nfscldeleg **dpp, 370 int reclaim, u_int32_t delegtype, struct ucred *cred, NFSPROC_T *p, 371 int syscred, int recursed) 372 { 373 u_int32_t *tl; 374 struct nfsrv_descript nfsd, *nd = &nfsd; 375 struct nfscldeleg *dp, *ndp = NULL; 376 struct nfsvattr nfsva; 377 u_int32_t rflags, deleg; 378 nfsattrbit_t attrbits; 379 int error, ret, acesize, limitby; 380 381 dp = *dpp; 382 *dpp = NULL; 383 nfscl_reqstart(nd, NFSPROC_OPEN, nmp, nfhp, fhlen, NULL, NULL); 384 NFSM_BUILD(tl, u_int32_t *, 5 * NFSX_UNSIGNED); 385 *tl++ = txdr_unsigned(op->nfso_own->nfsow_seqid); 386 *tl++ = txdr_unsigned(mode & NFSV4OPEN_ACCESSBOTH); 387 *tl++ = txdr_unsigned((mode >> NFSLCK_SHIFT) & NFSV4OPEN_DENYBOTH); 388 *tl++ = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[0]; 389 *tl = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[1]; 390 (void) nfsm_strtom(nd, op->nfso_own->nfsow_owner, NFSV4CL_LOCKNAMELEN); 391 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 392 *tl++ = txdr_unsigned(NFSV4OPEN_NOCREATE); 393 if (reclaim) { 394 *tl = txdr_unsigned(NFSV4OPEN_CLAIMPREVIOUS); 395 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 396 *tl = txdr_unsigned(delegtype); 397 } else { 398 if (dp != NULL) { 399 *tl = txdr_unsigned(NFSV4OPEN_CLAIMDELEGATECUR); 400 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID); 401 if (NFSHASNFSV4N(nmp)) 402 *tl++ = 0; 403 else 404 *tl++ = dp->nfsdl_stateid.seqid; 405 *tl++ = dp->nfsdl_stateid.other[0]; 406 *tl++ = dp->nfsdl_stateid.other[1]; 407 *tl = dp->nfsdl_stateid.other[2]; 408 } else { 409 *tl = txdr_unsigned(NFSV4OPEN_CLAIMNULL); 410 } 411 (void) nfsm_strtom(nd, name, namelen); 412 } 413 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 414 *tl = txdr_unsigned(NFSV4OP_GETATTR); 415 NFSZERO_ATTRBIT(&attrbits); 416 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_CHANGE); 417 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_TIMEMODIFY); 418 (void) nfsrv_putattrbit(nd, &attrbits); 419 if (syscred) 420 nd->nd_flag |= ND_USEGSSNAME; 421 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, vp, p, cred, 422 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 423 if (error) 424 return (error); 425 NFSCL_INCRSEQID(op->nfso_own->nfsow_seqid, nd); 426 if (!nd->nd_repstat) { 427 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID + 428 6 * NFSX_UNSIGNED); 429 op->nfso_stateid.seqid = *tl++; 430 op->nfso_stateid.other[0] = *tl++; 431 op->nfso_stateid.other[1] = *tl++; 432 op->nfso_stateid.other[2] = *tl; 433 rflags = fxdr_unsigned(u_int32_t, *(tl + 6)); 434 error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL); 435 if (error) 436 goto nfsmout; 437 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 438 deleg = fxdr_unsigned(u_int32_t, *tl); 439 if (deleg == NFSV4OPEN_DELEGATEREAD || 440 deleg == NFSV4OPEN_DELEGATEWRITE) { 441 if (!(op->nfso_own->nfsow_clp->nfsc_flags & 442 NFSCLFLAGS_FIRSTDELEG)) 443 op->nfso_own->nfsow_clp->nfsc_flags |= 444 (NFSCLFLAGS_FIRSTDELEG | NFSCLFLAGS_GOTDELEG); 445 MALLOC(ndp, struct nfscldeleg *, 446 sizeof (struct nfscldeleg) + newfhlen, 447 M_NFSCLDELEG, M_WAITOK); 448 LIST_INIT(&ndp->nfsdl_owner); 449 LIST_INIT(&ndp->nfsdl_lock); 450 ndp->nfsdl_clp = op->nfso_own->nfsow_clp; 451 ndp->nfsdl_fhlen = newfhlen; 452 NFSBCOPY(newfhp, ndp->nfsdl_fh, newfhlen); 453 newnfs_copyincred(cred, &ndp->nfsdl_cred); 454 nfscl_lockinit(&ndp->nfsdl_rwlock); 455 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID + 456 NFSX_UNSIGNED); 457 ndp->nfsdl_stateid.seqid = *tl++; 458 ndp->nfsdl_stateid.other[0] = *tl++; 459 ndp->nfsdl_stateid.other[1] = *tl++; 460 ndp->nfsdl_stateid.other[2] = *tl++; 461 ret = fxdr_unsigned(int, *tl); 462 if (deleg == NFSV4OPEN_DELEGATEWRITE) { 463 ndp->nfsdl_flags = NFSCLDL_WRITE; 464 /* 465 * Indicates how much the file can grow. 466 */ 467 NFSM_DISSECT(tl, u_int32_t *, 468 3 * NFSX_UNSIGNED); 469 limitby = fxdr_unsigned(int, *tl++); 470 switch (limitby) { 471 case NFSV4OPEN_LIMITSIZE: 472 ndp->nfsdl_sizelimit = fxdr_hyper(tl); 473 break; 474 case NFSV4OPEN_LIMITBLOCKS: 475 ndp->nfsdl_sizelimit = 476 fxdr_unsigned(u_int64_t, *tl++); 477 ndp->nfsdl_sizelimit *= 478 fxdr_unsigned(u_int64_t, *tl); 479 break; 480 default: 481 error = NFSERR_BADXDR; 482 goto nfsmout; 483 }; 484 } else { 485 ndp->nfsdl_flags = NFSCLDL_READ; 486 } 487 if (ret) 488 ndp->nfsdl_flags |= NFSCLDL_RECALL; 489 error = nfsrv_dissectace(nd, &ndp->nfsdl_ace, &ret, 490 &acesize, p); 491 if (error) 492 goto nfsmout; 493 } else if (deleg != NFSV4OPEN_DELEGATENONE) { 494 error = NFSERR_BADXDR; 495 goto nfsmout; 496 } 497 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 498 error = nfsv4_loadattr(nd, NULL, &nfsva, NULL, 499 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0, 500 NULL, NULL, NULL, p, cred); 501 if (error) 502 goto nfsmout; 503 if (ndp != NULL) { 504 ndp->nfsdl_change = nfsva.na_filerev; 505 ndp->nfsdl_modtime = nfsva.na_mtime; 506 ndp->nfsdl_flags |= NFSCLDL_MODTIMESET; 507 } 508 if (!reclaim && (rflags & NFSV4OPEN_RESULTCONFIRM)) { 509 do { 510 ret = nfsrpc_openconfirm(vp, newfhp, newfhlen, op, 511 cred, p); 512 if (ret == NFSERR_DELAY) 513 (void) nfs_catnap(PZERO, ret, "nfs_open"); 514 } while (ret == NFSERR_DELAY); 515 error = ret; 516 } 517 if ((rflags & NFSV4OPEN_LOCKTYPEPOSIX) || 518 nfscl_assumeposixlocks) 519 op->nfso_posixlock = 1; 520 else 521 op->nfso_posixlock = 0; 522 523 /* 524 * If the server is handing out delegations, but we didn't 525 * get one because an OpenConfirm was required, try the 526 * Open again, to get a delegation. This is a harmless no-op, 527 * from a server's point of view. 528 */ 529 if (!reclaim && (rflags & NFSV4OPEN_RESULTCONFIRM) && 530 (op->nfso_own->nfsow_clp->nfsc_flags & NFSCLFLAGS_GOTDELEG) 531 && !error && dp == NULL && ndp == NULL && !recursed) { 532 do { 533 ret = nfsrpc_openrpc(nmp, vp, nfhp, fhlen, newfhp, 534 newfhlen, mode, op, name, namelen, &ndp, 0, 0x0, 535 cred, p, syscred, 1); 536 if (ret == NFSERR_DELAY) 537 (void) nfs_catnap(PZERO, ret, "nfs_open2"); 538 } while (ret == NFSERR_DELAY); 539 if (ret) { 540 if (ndp != NULL) { 541 FREE((caddr_t)ndp, M_NFSCLDELEG); 542 ndp = NULL; 543 } 544 if (ret == NFSERR_STALECLIENTID || 545 ret == NFSERR_STALEDONTRECOVER || 546 ret == NFSERR_BADSESSION) 547 error = ret; 548 } 549 } 550 } 551 if (nd->nd_repstat != 0 && error == 0) 552 error = nd->nd_repstat; 553 if (error == NFSERR_STALECLIENTID || error == NFSERR_BADSESSION) 554 nfscl_initiate_recovery(op->nfso_own->nfsow_clp); 555 nfsmout: 556 if (!error) 557 *dpp = ndp; 558 else if (ndp != NULL) 559 FREE((caddr_t)ndp, M_NFSCLDELEG); 560 mbuf_freem(nd->nd_mrep); 561 return (error); 562 } 563 564 /* 565 * open downgrade rpc 566 */ 567 APPLESTATIC int 568 nfsrpc_opendowngrade(vnode_t vp, u_int32_t mode, struct nfsclopen *op, 569 struct ucred *cred, NFSPROC_T *p) 570 { 571 u_int32_t *tl; 572 struct nfsrv_descript nfsd, *nd = &nfsd; 573 int error; 574 575 NFSCL_REQSTART(nd, NFSPROC_OPENDOWNGRADE, vp); 576 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID + 3 * NFSX_UNSIGNED); 577 if (NFSHASNFSV4N(VFSTONFS(vnode_mount(vp)))) 578 *tl++ = 0; 579 else 580 *tl++ = op->nfso_stateid.seqid; 581 *tl++ = op->nfso_stateid.other[0]; 582 *tl++ = op->nfso_stateid.other[1]; 583 *tl++ = op->nfso_stateid.other[2]; 584 *tl++ = txdr_unsigned(op->nfso_own->nfsow_seqid); 585 *tl++ = txdr_unsigned(mode & NFSV4OPEN_ACCESSBOTH); 586 *tl = txdr_unsigned((mode >> NFSLCK_SHIFT) & NFSV4OPEN_DENYBOTH); 587 error = nfscl_request(nd, vp, p, cred, NULL); 588 if (error) 589 return (error); 590 NFSCL_INCRSEQID(op->nfso_own->nfsow_seqid, nd); 591 if (!nd->nd_repstat) { 592 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID); 593 op->nfso_stateid.seqid = *tl++; 594 op->nfso_stateid.other[0] = *tl++; 595 op->nfso_stateid.other[1] = *tl++; 596 op->nfso_stateid.other[2] = *tl; 597 } 598 if (nd->nd_repstat && error == 0) 599 error = nd->nd_repstat; 600 if (error == NFSERR_STALESTATEID || error == NFSERR_BADSESSION) 601 nfscl_initiate_recovery(op->nfso_own->nfsow_clp); 602 nfsmout: 603 mbuf_freem(nd->nd_mrep); 604 return (error); 605 } 606 607 /* 608 * V4 Close operation. 609 */ 610 APPLESTATIC int 611 nfsrpc_close(vnode_t vp, int doclose, NFSPROC_T *p) 612 { 613 struct nfsclclient *clp; 614 int error; 615 616 if (vnode_vtype(vp) != VREG) 617 return (0); 618 if (doclose) 619 error = nfscl_doclose(vp, &clp, p); 620 else 621 error = nfscl_getclose(vp, &clp); 622 if (error) 623 return (error); 624 625 nfscl_clientrelease(clp); 626 return (0); 627 } 628 629 /* 630 * Close the open. 631 */ 632 APPLESTATIC void 633 nfsrpc_doclose(struct nfsmount *nmp, struct nfsclopen *op, NFSPROC_T *p) 634 { 635 struct nfsrv_descript nfsd, *nd = &nfsd; 636 struct nfscllockowner *lp, *nlp; 637 struct nfscllock *lop, *nlop; 638 struct ucred *tcred; 639 u_int64_t off = 0, len = 0; 640 u_int32_t type = NFSV4LOCKT_READ; 641 int error, do_unlock, trycnt; 642 643 tcred = newnfs_getcred(); 644 newnfs_copycred(&op->nfso_cred, tcred); 645 /* 646 * (Theoretically this could be done in the same 647 * compound as the close, but having multiple 648 * sequenced Ops in the same compound might be 649 * too scary for some servers.) 650 */ 651 if (op->nfso_posixlock) { 652 off = 0; 653 len = NFS64BITSSET; 654 type = NFSV4LOCKT_READ; 655 } 656 657 /* 658 * Since this function is only called from VOP_INACTIVE(), no 659 * other thread will be manipulating this Open. As such, the 660 * lock lists are not being changed by other threads, so it should 661 * be safe to do this without locking. 662 */ 663 LIST_FOREACH(lp, &op->nfso_lock, nfsl_list) { 664 do_unlock = 1; 665 LIST_FOREACH_SAFE(lop, &lp->nfsl_lock, nfslo_list, nlop) { 666 if (op->nfso_posixlock == 0) { 667 off = lop->nfslo_first; 668 len = lop->nfslo_end - lop->nfslo_first; 669 if (lop->nfslo_type == F_WRLCK) 670 type = NFSV4LOCKT_WRITE; 671 else 672 type = NFSV4LOCKT_READ; 673 } 674 if (do_unlock) { 675 trycnt = 0; 676 do { 677 error = nfsrpc_locku(nd, nmp, lp, off, 678 len, type, tcred, p, 0); 679 if ((nd->nd_repstat == NFSERR_GRACE || 680 nd->nd_repstat == NFSERR_DELAY) && 681 error == 0) 682 (void) nfs_catnap(PZERO, 683 (int)nd->nd_repstat, 684 "nfs_close"); 685 } while ((nd->nd_repstat == NFSERR_GRACE || 686 nd->nd_repstat == NFSERR_DELAY) && 687 error == 0 && trycnt++ < 5); 688 if (op->nfso_posixlock) 689 do_unlock = 0; 690 } 691 nfscl_freelock(lop, 0); 692 } 693 /* 694 * Do a ReleaseLockOwner. 695 * The lock owner name nfsl_owner may be used by other opens for 696 * other files but the lock_owner4 name that nfsrpc_rellockown() 697 * puts on the wire has the file handle for this file appended 698 * to it, so it can be done now. 699 */ 700 (void)nfsrpc_rellockown(nmp, lp, lp->nfsl_open->nfso_fh, 701 lp->nfsl_open->nfso_fhlen, tcred, p); 702 } 703 704 /* 705 * There could be other Opens for different files on the same 706 * OpenOwner, so locking is required. 707 */ 708 NFSLOCKCLSTATE(); 709 nfscl_lockexcl(&op->nfso_own->nfsow_rwlock, NFSCLSTATEMUTEXPTR); 710 NFSUNLOCKCLSTATE(); 711 do { 712 error = nfscl_tryclose(op, tcred, nmp, p); 713 if (error == NFSERR_GRACE) 714 (void) nfs_catnap(PZERO, error, "nfs_close"); 715 } while (error == NFSERR_GRACE); 716 NFSLOCKCLSTATE(); 717 nfscl_lockunlock(&op->nfso_own->nfsow_rwlock); 718 719 LIST_FOREACH_SAFE(lp, &op->nfso_lock, nfsl_list, nlp) 720 nfscl_freelockowner(lp, 0); 721 nfscl_freeopen(op, 0); 722 NFSUNLOCKCLSTATE(); 723 NFSFREECRED(tcred); 724 } 725 726 /* 727 * The actual Close RPC. 728 */ 729 APPLESTATIC int 730 nfsrpc_closerpc(struct nfsrv_descript *nd, struct nfsmount *nmp, 731 struct nfsclopen *op, struct ucred *cred, NFSPROC_T *p, 732 int syscred) 733 { 734 u_int32_t *tl; 735 int error; 736 737 nfscl_reqstart(nd, NFSPROC_CLOSE, nmp, op->nfso_fh, 738 op->nfso_fhlen, NULL, NULL); 739 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED + NFSX_STATEID); 740 *tl++ = txdr_unsigned(op->nfso_own->nfsow_seqid); 741 if (NFSHASNFSV4N(nmp)) 742 *tl++ = 0; 743 else 744 *tl++ = op->nfso_stateid.seqid; 745 *tl++ = op->nfso_stateid.other[0]; 746 *tl++ = op->nfso_stateid.other[1]; 747 *tl = op->nfso_stateid.other[2]; 748 if (syscred) 749 nd->nd_flag |= ND_USEGSSNAME; 750 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 751 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 752 if (error) 753 return (error); 754 NFSCL_INCRSEQID(op->nfso_own->nfsow_seqid, nd); 755 if (nd->nd_repstat == 0) 756 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID); 757 error = nd->nd_repstat; 758 if (error == NFSERR_STALESTATEID || error == NFSERR_BADSESSION) 759 nfscl_initiate_recovery(op->nfso_own->nfsow_clp); 760 nfsmout: 761 mbuf_freem(nd->nd_mrep); 762 return (error); 763 } 764 765 /* 766 * V4 Open Confirm RPC. 767 */ 768 APPLESTATIC int 769 nfsrpc_openconfirm(vnode_t vp, u_int8_t *nfhp, int fhlen, 770 struct nfsclopen *op, struct ucred *cred, NFSPROC_T *p) 771 { 772 u_int32_t *tl; 773 struct nfsrv_descript nfsd, *nd = &nfsd; 774 struct nfsmount *nmp; 775 int error; 776 777 nmp = VFSTONFS(vnode_mount(vp)); 778 if (NFSHASNFSV4N(nmp)) 779 return (0); /* No confirmation for NFSv4.1. */ 780 nfscl_reqstart(nd, NFSPROC_OPENCONFIRM, nmp, nfhp, fhlen, NULL, NULL); 781 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED + NFSX_STATEID); 782 *tl++ = op->nfso_stateid.seqid; 783 *tl++ = op->nfso_stateid.other[0]; 784 *tl++ = op->nfso_stateid.other[1]; 785 *tl++ = op->nfso_stateid.other[2]; 786 *tl = txdr_unsigned(op->nfso_own->nfsow_seqid); 787 error = nfscl_request(nd, vp, p, cred, NULL); 788 if (error) 789 return (error); 790 NFSCL_INCRSEQID(op->nfso_own->nfsow_seqid, nd); 791 if (!nd->nd_repstat) { 792 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID); 793 op->nfso_stateid.seqid = *tl++; 794 op->nfso_stateid.other[0] = *tl++; 795 op->nfso_stateid.other[1] = *tl++; 796 op->nfso_stateid.other[2] = *tl; 797 } 798 error = nd->nd_repstat; 799 if (error == NFSERR_STALESTATEID || error == NFSERR_BADSESSION) 800 nfscl_initiate_recovery(op->nfso_own->nfsow_clp); 801 nfsmout: 802 mbuf_freem(nd->nd_mrep); 803 return (error); 804 } 805 806 /* 807 * Do the setclientid and setclientid confirm RPCs. Called from nfs_statfs() 808 * when a mount has just occurred and when the server replies NFSERR_EXPIRED. 809 */ 810 APPLESTATIC int 811 nfsrpc_setclient(struct nfsmount *nmp, struct nfsclclient *clp, int reclaim, 812 struct ucred *cred, NFSPROC_T *p) 813 { 814 u_int32_t *tl; 815 struct nfsrv_descript nfsd; 816 struct nfsrv_descript *nd = &nfsd; 817 nfsattrbit_t attrbits; 818 u_int8_t *cp = NULL, *cp2, addr[INET6_ADDRSTRLEN + 9]; 819 u_short port; 820 int error, isinet6 = 0, callblen; 821 nfsquad_t confirm; 822 u_int32_t lease; 823 static u_int32_t rev = 0; 824 struct nfsclds *dsp, *ndsp, *tdsp; 825 826 if (nfsboottime.tv_sec == 0) 827 NFSSETBOOTTIME(nfsboottime); 828 clp->nfsc_rev = rev++; 829 if (NFSHASNFSV4N(nmp)) { 830 error = nfsrpc_exchangeid(nmp, clp, &nmp->nm_sockreq, 831 NFSV4EXCH_USEPNFSMDS | NFSV4EXCH_USENONPNFS, &dsp, cred, p); 832 NFSCL_DEBUG(1, "aft exch=%d\n", error); 833 if (error == 0) { 834 error = nfsrpc_createsession(nmp, &dsp->nfsclds_sess, 835 &nmp->nm_sockreq, 836 dsp->nfsclds_sess.nfsess_sequenceid, 1, cred, p); 837 if (error == 0) { 838 NFSLOCKMNT(nmp); 839 TAILQ_FOREACH_SAFE(tdsp, &nmp->nm_sess, 840 nfsclds_list, ndsp) 841 nfscl_freenfsclds(tdsp); 842 TAILQ_INIT(&nmp->nm_sess); 843 TAILQ_INSERT_HEAD(&nmp->nm_sess, dsp, 844 nfsclds_list); 845 NFSUNLOCKMNT(nmp); 846 } else 847 nfscl_freenfsclds(dsp); 848 NFSCL_DEBUG(1, "aft createsess=%d\n", error); 849 } 850 if (error == 0 && reclaim == 0) { 851 error = nfsrpc_reclaimcomplete(nmp, cred, p); 852 NFSCL_DEBUG(1, "aft reclaimcomp=%d\n", error); 853 if (error == NFSERR_COMPLETEALREADY || 854 error == NFSERR_NOTSUPP) 855 /* Ignore this error. */ 856 error = 0; 857 } 858 return (error); 859 } 860 861 /* 862 * Allocate a single session structure for NFSv4.0, because some of 863 * the fields are used by NFSv4.0 although it doesn't do a session. 864 */ 865 dsp = malloc(sizeof(struct nfsclds), M_NFSCLDS, M_WAITOK | M_ZERO); 866 mtx_init(&dsp->nfsclds_mtx, "nfsds", NULL, MTX_DEF); 867 mtx_init(&dsp->nfsclds_sess.nfsess_mtx, "nfssession", NULL, MTX_DEF); 868 NFSLOCKMNT(nmp); 869 TAILQ_INSERT_HEAD(&nmp->nm_sess, dsp, nfsclds_list); 870 NFSUNLOCKMNT(nmp); 871 872 nfscl_reqstart(nd, NFSPROC_SETCLIENTID, nmp, NULL, 0, NULL, NULL); 873 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 874 *tl++ = txdr_unsigned(nfsboottime.tv_sec); 875 *tl = txdr_unsigned(clp->nfsc_rev); 876 (void) nfsm_strtom(nd, clp->nfsc_id, clp->nfsc_idlen); 877 878 /* 879 * set up the callback address 880 */ 881 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 882 *tl = txdr_unsigned(NFS_CALLBCKPROG); 883 callblen = strlen(nfsv4_callbackaddr); 884 if (callblen == 0) 885 cp = nfscl_getmyip(nmp, &isinet6); 886 if (nfscl_enablecallb && nfs_numnfscbd > 0 && 887 (callblen > 0 || cp != NULL)) { 888 port = htons(nfsv4_cbport); 889 cp2 = (u_int8_t *)&port; 890 #ifdef INET6 891 if ((callblen > 0 && 892 strchr(nfsv4_callbackaddr, ':')) || isinet6) { 893 char ip6buf[INET6_ADDRSTRLEN], *ip6add; 894 895 (void) nfsm_strtom(nd, "tcp6", 4); 896 if (callblen == 0) { 897 ip6_sprintf(ip6buf, (struct in6_addr *)cp); 898 ip6add = ip6buf; 899 } else { 900 ip6add = nfsv4_callbackaddr; 901 } 902 snprintf(addr, INET6_ADDRSTRLEN + 9, "%s.%d.%d", 903 ip6add, cp2[0], cp2[1]); 904 } else 905 #endif 906 { 907 (void) nfsm_strtom(nd, "tcp", 3); 908 if (callblen == 0) 909 snprintf(addr, INET6_ADDRSTRLEN + 9, 910 "%d.%d.%d.%d.%d.%d", cp[0], cp[1], 911 cp[2], cp[3], cp2[0], cp2[1]); 912 else 913 snprintf(addr, INET6_ADDRSTRLEN + 9, 914 "%s.%d.%d", nfsv4_callbackaddr, 915 cp2[0], cp2[1]); 916 } 917 (void) nfsm_strtom(nd, addr, strlen(addr)); 918 } else { 919 (void) nfsm_strtom(nd, "tcp", 3); 920 (void) nfsm_strtom(nd, "0.0.0.0.0.0", 11); 921 } 922 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 923 *tl = txdr_unsigned(clp->nfsc_cbident); 924 nd->nd_flag |= ND_USEGSSNAME; 925 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 926 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 927 if (error) 928 return (error); 929 if (nd->nd_repstat == 0) { 930 NFSM_DISSECT(tl, u_int32_t *, 4 * NFSX_UNSIGNED); 931 NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[0] = *tl++; 932 NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[1] = *tl++; 933 confirm.lval[0] = *tl++; 934 confirm.lval[1] = *tl; 935 mbuf_freem(nd->nd_mrep); 936 nd->nd_mrep = NULL; 937 938 /* 939 * and confirm it. 940 */ 941 nfscl_reqstart(nd, NFSPROC_SETCLIENTIDCFRM, nmp, NULL, 0, NULL, 942 NULL); 943 NFSM_BUILD(tl, u_int32_t *, 4 * NFSX_UNSIGNED); 944 *tl++ = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[0]; 945 *tl++ = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[1]; 946 *tl++ = confirm.lval[0]; 947 *tl = confirm.lval[1]; 948 nd->nd_flag |= ND_USEGSSNAME; 949 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, 950 cred, NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 951 if (error) 952 return (error); 953 mbuf_freem(nd->nd_mrep); 954 nd->nd_mrep = NULL; 955 if (nd->nd_repstat == 0) { 956 nfscl_reqstart(nd, NFSPROC_GETATTR, nmp, nmp->nm_fh, 957 nmp->nm_fhsize, NULL, NULL); 958 NFSZERO_ATTRBIT(&attrbits); 959 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_LEASETIME); 960 (void) nfsrv_putattrbit(nd, &attrbits); 961 nd->nd_flag |= ND_USEGSSNAME; 962 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, 963 cred, NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 964 if (error) 965 return (error); 966 if (nd->nd_repstat == 0) { 967 error = nfsv4_loadattr(nd, NULL, NULL, NULL, NULL, 0, NULL, 968 NULL, NULL, NULL, NULL, 0, NULL, &lease, NULL, p, cred); 969 if (error) 970 goto nfsmout; 971 clp->nfsc_renew = NFSCL_RENEW(lease); 972 clp->nfsc_expire = NFSD_MONOSEC + clp->nfsc_renew; 973 clp->nfsc_clientidrev++; 974 if (clp->nfsc_clientidrev == 0) 975 clp->nfsc_clientidrev++; 976 } 977 } 978 } 979 error = nd->nd_repstat; 980 nfsmout: 981 mbuf_freem(nd->nd_mrep); 982 return (error); 983 } 984 985 /* 986 * nfs getattr call. 987 */ 988 APPLESTATIC int 989 nfsrpc_getattr(vnode_t vp, struct ucred *cred, NFSPROC_T *p, 990 struct nfsvattr *nap, void *stuff) 991 { 992 struct nfsrv_descript nfsd, *nd = &nfsd; 993 int error; 994 nfsattrbit_t attrbits; 995 996 NFSCL_REQSTART(nd, NFSPROC_GETATTR, vp); 997 if (nd->nd_flag & ND_NFSV4) { 998 NFSGETATTR_ATTRBIT(&attrbits); 999 (void) nfsrv_putattrbit(nd, &attrbits); 1000 } 1001 error = nfscl_request(nd, vp, p, cred, stuff); 1002 if (error) 1003 return (error); 1004 if (!nd->nd_repstat) 1005 error = nfsm_loadattr(nd, nap); 1006 else 1007 error = nd->nd_repstat; 1008 mbuf_freem(nd->nd_mrep); 1009 return (error); 1010 } 1011 1012 /* 1013 * nfs getattr call with non-vnode arguemnts. 1014 */ 1015 APPLESTATIC int 1016 nfsrpc_getattrnovp(struct nfsmount *nmp, u_int8_t *fhp, int fhlen, int syscred, 1017 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, u_int64_t *xidp, 1018 uint32_t *leasep) 1019 { 1020 struct nfsrv_descript nfsd, *nd = &nfsd; 1021 int error, vers = NFS_VER2; 1022 nfsattrbit_t attrbits; 1023 1024 nfscl_reqstart(nd, NFSPROC_GETATTR, nmp, fhp, fhlen, NULL, NULL); 1025 if (nd->nd_flag & ND_NFSV4) { 1026 vers = NFS_VER4; 1027 NFSGETATTR_ATTRBIT(&attrbits); 1028 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_LEASETIME); 1029 (void) nfsrv_putattrbit(nd, &attrbits); 1030 } else if (nd->nd_flag & ND_NFSV3) { 1031 vers = NFS_VER3; 1032 } 1033 if (syscred) 1034 nd->nd_flag |= ND_USEGSSNAME; 1035 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 1036 NFS_PROG, vers, NULL, 1, xidp, NULL); 1037 if (error) 1038 return (error); 1039 if (nd->nd_repstat == 0) { 1040 if ((nd->nd_flag & ND_NFSV4) != 0) 1041 error = nfsv4_loadattr(nd, NULL, nap, NULL, NULL, 0, 1042 NULL, NULL, NULL, NULL, NULL, 0, NULL, leasep, NULL, 1043 NULL, NULL); 1044 else 1045 error = nfsm_loadattr(nd, nap); 1046 } else 1047 error = nd->nd_repstat; 1048 mbuf_freem(nd->nd_mrep); 1049 return (error); 1050 } 1051 1052 /* 1053 * Do an nfs setattr operation. 1054 */ 1055 APPLESTATIC int 1056 nfsrpc_setattr(vnode_t vp, struct vattr *vap, NFSACL_T *aclp, 1057 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *rnap, int *attrflagp, 1058 void *stuff) 1059 { 1060 int error, expireret = 0, openerr, retrycnt; 1061 u_int32_t clidrev = 0, mode; 1062 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 1063 struct nfsfh *nfhp; 1064 nfsv4stateid_t stateid; 1065 void *lckp; 1066 1067 if (nmp->nm_clp != NULL) 1068 clidrev = nmp->nm_clp->nfsc_clientidrev; 1069 if (vap != NULL && NFSATTRISSET(u_quad_t, vap, va_size)) 1070 mode = NFSV4OPEN_ACCESSWRITE; 1071 else 1072 mode = NFSV4OPEN_ACCESSREAD; 1073 retrycnt = 0; 1074 do { 1075 lckp = NULL; 1076 openerr = 1; 1077 if (NFSHASNFSV4(nmp)) { 1078 nfhp = VTONFS(vp)->n_fhp; 1079 error = nfscl_getstateid(vp, nfhp->nfh_fh, 1080 nfhp->nfh_len, mode, 0, cred, p, &stateid, &lckp); 1081 if (error && vnode_vtype(vp) == VREG && 1082 (mode == NFSV4OPEN_ACCESSWRITE || 1083 nfstest_openallsetattr)) { 1084 /* 1085 * No Open stateid, so try and open the file 1086 * now. 1087 */ 1088 if (mode == NFSV4OPEN_ACCESSWRITE) 1089 openerr = nfsrpc_open(vp, FWRITE, cred, 1090 p); 1091 else 1092 openerr = nfsrpc_open(vp, FREAD, cred, 1093 p); 1094 if (!openerr) 1095 (void) nfscl_getstateid(vp, 1096 nfhp->nfh_fh, nfhp->nfh_len, 1097 mode, 0, cred, p, &stateid, &lckp); 1098 } 1099 } 1100 if (vap != NULL) 1101 error = nfsrpc_setattrrpc(vp, vap, &stateid, cred, p, 1102 rnap, attrflagp, stuff); 1103 else 1104 error = nfsrpc_setaclrpc(vp, cred, p, aclp, &stateid, 1105 stuff); 1106 if (error == NFSERR_STALESTATEID || error == NFSERR_BADSESSION) 1107 nfscl_initiate_recovery(nmp->nm_clp); 1108 if (lckp != NULL) 1109 nfscl_lockderef(lckp); 1110 if (!openerr) 1111 (void) nfsrpc_close(vp, 0, p); 1112 if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 1113 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 1114 error == NFSERR_OLDSTATEID || error == NFSERR_BADSESSION) { 1115 (void) nfs_catnap(PZERO, error, "nfs_setattr"); 1116 } else if ((error == NFSERR_EXPIRED || 1117 error == NFSERR_BADSTATEID) && clidrev != 0) { 1118 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p); 1119 } 1120 retrycnt++; 1121 } while (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 1122 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 1123 error == NFSERR_BADSESSION || 1124 (error == NFSERR_OLDSTATEID && retrycnt < 20) || 1125 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) && 1126 expireret == 0 && clidrev != 0 && retrycnt < 4)); 1127 if (error && retrycnt >= 4) 1128 error = EIO; 1129 return (error); 1130 } 1131 1132 static int 1133 nfsrpc_setattrrpc(vnode_t vp, struct vattr *vap, 1134 nfsv4stateid_t *stateidp, struct ucred *cred, NFSPROC_T *p, 1135 struct nfsvattr *rnap, int *attrflagp, void *stuff) 1136 { 1137 u_int32_t *tl; 1138 struct nfsrv_descript nfsd, *nd = &nfsd; 1139 int error; 1140 nfsattrbit_t attrbits; 1141 1142 *attrflagp = 0; 1143 NFSCL_REQSTART(nd, NFSPROC_SETATTR, vp); 1144 if (nd->nd_flag & ND_NFSV4) 1145 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID); 1146 vap->va_type = vnode_vtype(vp); 1147 nfscl_fillsattr(nd, vap, vp, NFSSATTR_FULL, 0); 1148 if (nd->nd_flag & ND_NFSV3) { 1149 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1150 *tl = newnfs_false; 1151 } else if (nd->nd_flag & ND_NFSV4) { 1152 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1153 *tl = txdr_unsigned(NFSV4OP_GETATTR); 1154 NFSGETATTR_ATTRBIT(&attrbits); 1155 (void) nfsrv_putattrbit(nd, &attrbits); 1156 } 1157 error = nfscl_request(nd, vp, p, cred, stuff); 1158 if (error) 1159 return (error); 1160 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) 1161 error = nfscl_wcc_data(nd, vp, rnap, attrflagp, NULL, stuff); 1162 if ((nd->nd_flag & ND_NFSV4) && !error) 1163 error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL); 1164 if (!(nd->nd_flag & ND_NFSV3) && !nd->nd_repstat && !error) 1165 error = nfscl_postop_attr(nd, rnap, attrflagp, stuff); 1166 mbuf_freem(nd->nd_mrep); 1167 if (nd->nd_repstat && !error) 1168 error = nd->nd_repstat; 1169 return (error); 1170 } 1171 1172 /* 1173 * nfs lookup rpc 1174 */ 1175 APPLESTATIC int 1176 nfsrpc_lookup(vnode_t dvp, char *name, int len, struct ucred *cred, 1177 NFSPROC_T *p, struct nfsvattr *dnap, struct nfsvattr *nap, 1178 struct nfsfh **nfhpp, int *attrflagp, int *dattrflagp, void *stuff) 1179 { 1180 u_int32_t *tl; 1181 struct nfsrv_descript nfsd, *nd = &nfsd; 1182 struct nfsmount *nmp; 1183 struct nfsnode *np; 1184 struct nfsfh *nfhp; 1185 nfsattrbit_t attrbits; 1186 int error = 0, lookupp = 0; 1187 1188 *attrflagp = 0; 1189 *dattrflagp = 0; 1190 if (vnode_vtype(dvp) != VDIR) 1191 return (ENOTDIR); 1192 nmp = VFSTONFS(vnode_mount(dvp)); 1193 if (len > NFS_MAXNAMLEN) 1194 return (ENAMETOOLONG); 1195 if (NFSHASNFSV4(nmp) && len == 1 && 1196 name[0] == '.') { 1197 /* 1198 * Just return the current dir's fh. 1199 */ 1200 np = VTONFS(dvp); 1201 MALLOC(nfhp, struct nfsfh *, sizeof (struct nfsfh) + 1202 np->n_fhp->nfh_len, M_NFSFH, M_WAITOK); 1203 nfhp->nfh_len = np->n_fhp->nfh_len; 1204 NFSBCOPY(np->n_fhp->nfh_fh, nfhp->nfh_fh, nfhp->nfh_len); 1205 *nfhpp = nfhp; 1206 return (0); 1207 } 1208 if (NFSHASNFSV4(nmp) && len == 2 && 1209 name[0] == '.' && name[1] == '.') { 1210 lookupp = 1; 1211 NFSCL_REQSTART(nd, NFSPROC_LOOKUPP, dvp); 1212 } else { 1213 NFSCL_REQSTART(nd, NFSPROC_LOOKUP, dvp); 1214 (void) nfsm_strtom(nd, name, len); 1215 } 1216 if (nd->nd_flag & ND_NFSV4) { 1217 NFSGETATTR_ATTRBIT(&attrbits); 1218 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1219 *tl++ = txdr_unsigned(NFSV4OP_GETFH); 1220 *tl = txdr_unsigned(NFSV4OP_GETATTR); 1221 (void) nfsrv_putattrbit(nd, &attrbits); 1222 } 1223 error = nfscl_request(nd, dvp, p, cred, stuff); 1224 if (error) 1225 return (error); 1226 if (nd->nd_repstat) { 1227 /* 1228 * When an NFSv4 Lookupp returns ENOENT, it means that 1229 * the lookup is at the root of an fs, so return this dir. 1230 */ 1231 if (nd->nd_repstat == NFSERR_NOENT && lookupp) { 1232 np = VTONFS(dvp); 1233 MALLOC(nfhp, struct nfsfh *, sizeof (struct nfsfh) + 1234 np->n_fhp->nfh_len, M_NFSFH, M_WAITOK); 1235 nfhp->nfh_len = np->n_fhp->nfh_len; 1236 NFSBCOPY(np->n_fhp->nfh_fh, nfhp->nfh_fh, nfhp->nfh_len); 1237 *nfhpp = nfhp; 1238 mbuf_freem(nd->nd_mrep); 1239 return (0); 1240 } 1241 if (nd->nd_flag & ND_NFSV3) 1242 error = nfscl_postop_attr(nd, dnap, dattrflagp, stuff); 1243 else if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == 1244 ND_NFSV4) { 1245 /* Load the directory attributes. */ 1246 error = nfsm_loadattr(nd, dnap); 1247 if (error == 0) 1248 *dattrflagp = 1; 1249 } 1250 goto nfsmout; 1251 } 1252 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == ND_NFSV4) { 1253 /* Load the directory attributes. */ 1254 error = nfsm_loadattr(nd, dnap); 1255 if (error != 0) 1256 goto nfsmout; 1257 *dattrflagp = 1; 1258 /* Skip over the Lookup and GetFH operation status values. */ 1259 NFSM_DISSECT(tl, u_int32_t *, 4 * NFSX_UNSIGNED); 1260 } 1261 error = nfsm_getfh(nd, nfhpp); 1262 if (error) 1263 goto nfsmout; 1264 1265 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 1266 if ((nd->nd_flag & ND_NFSV3) && !error) 1267 error = nfscl_postop_attr(nd, dnap, dattrflagp, stuff); 1268 nfsmout: 1269 mbuf_freem(nd->nd_mrep); 1270 if (!error && nd->nd_repstat) 1271 error = nd->nd_repstat; 1272 return (error); 1273 } 1274 1275 /* 1276 * Do a readlink rpc. 1277 */ 1278 APPLESTATIC int 1279 nfsrpc_readlink(vnode_t vp, struct uio *uiop, struct ucred *cred, 1280 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff) 1281 { 1282 u_int32_t *tl; 1283 struct nfsrv_descript nfsd, *nd = &nfsd; 1284 struct nfsnode *np = VTONFS(vp); 1285 nfsattrbit_t attrbits; 1286 int error, len, cangetattr = 1; 1287 1288 *attrflagp = 0; 1289 NFSCL_REQSTART(nd, NFSPROC_READLINK, vp); 1290 if (nd->nd_flag & ND_NFSV4) { 1291 /* 1292 * And do a Getattr op. 1293 */ 1294 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1295 *tl = txdr_unsigned(NFSV4OP_GETATTR); 1296 NFSGETATTR_ATTRBIT(&attrbits); 1297 (void) nfsrv_putattrbit(nd, &attrbits); 1298 } 1299 error = nfscl_request(nd, vp, p, cred, stuff); 1300 if (error) 1301 return (error); 1302 if (nd->nd_flag & ND_NFSV3) 1303 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 1304 if (!nd->nd_repstat && !error) { 1305 NFSM_STRSIZ(len, NFS_MAXPATHLEN); 1306 /* 1307 * This seems weird to me, but must have been added to 1308 * FreeBSD for some reason. The only thing I can think of 1309 * is that there was/is some server that replies with 1310 * more link data than it should? 1311 */ 1312 if (len == NFS_MAXPATHLEN) { 1313 NFSLOCKNODE(np); 1314 if (np->n_size > 0 && np->n_size < NFS_MAXPATHLEN) { 1315 len = np->n_size; 1316 cangetattr = 0; 1317 } 1318 NFSUNLOCKNODE(np); 1319 } 1320 error = nfsm_mbufuio(nd, uiop, len); 1321 if ((nd->nd_flag & ND_NFSV4) && !error && cangetattr) 1322 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 1323 } 1324 if (nd->nd_repstat && !error) 1325 error = nd->nd_repstat; 1326 nfsmout: 1327 mbuf_freem(nd->nd_mrep); 1328 return (error); 1329 } 1330 1331 /* 1332 * Read operation. 1333 */ 1334 APPLESTATIC int 1335 nfsrpc_read(vnode_t vp, struct uio *uiop, struct ucred *cred, 1336 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff) 1337 { 1338 int error, expireret = 0, retrycnt; 1339 u_int32_t clidrev = 0; 1340 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 1341 struct nfsnode *np = VTONFS(vp); 1342 struct ucred *newcred; 1343 struct nfsfh *nfhp = NULL; 1344 nfsv4stateid_t stateid; 1345 void *lckp; 1346 1347 if (nmp->nm_clp != NULL) 1348 clidrev = nmp->nm_clp->nfsc_clientidrev; 1349 newcred = cred; 1350 if (NFSHASNFSV4(nmp)) { 1351 nfhp = np->n_fhp; 1352 newcred = NFSNEWCRED(cred); 1353 } 1354 retrycnt = 0; 1355 do { 1356 lckp = NULL; 1357 if (NFSHASNFSV4(nmp)) 1358 (void)nfscl_getstateid(vp, nfhp->nfh_fh, nfhp->nfh_len, 1359 NFSV4OPEN_ACCESSREAD, 0, newcred, p, &stateid, 1360 &lckp); 1361 error = nfsrpc_readrpc(vp, uiop, newcred, &stateid, p, nap, 1362 attrflagp, stuff); 1363 if (error == NFSERR_STALESTATEID || error == NFSERR_BADSESSION) 1364 nfscl_initiate_recovery(nmp->nm_clp); 1365 if (lckp != NULL) 1366 nfscl_lockderef(lckp); 1367 if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 1368 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 1369 error == NFSERR_OLDSTATEID || error == NFSERR_BADSESSION) { 1370 (void) nfs_catnap(PZERO, error, "nfs_read"); 1371 } else if ((error == NFSERR_EXPIRED || 1372 error == NFSERR_BADSTATEID) && clidrev != 0) { 1373 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p); 1374 } 1375 retrycnt++; 1376 } while (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 1377 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 1378 error == NFSERR_BADSESSION || 1379 (error == NFSERR_OLDSTATEID && retrycnt < 20) || 1380 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) && 1381 expireret == 0 && clidrev != 0 && retrycnt < 4)); 1382 if (error && retrycnt >= 4) 1383 error = EIO; 1384 if (NFSHASNFSV4(nmp)) 1385 NFSFREECRED(newcred); 1386 return (error); 1387 } 1388 1389 /* 1390 * The actual read RPC. 1391 */ 1392 static int 1393 nfsrpc_readrpc(vnode_t vp, struct uio *uiop, struct ucred *cred, 1394 nfsv4stateid_t *stateidp, NFSPROC_T *p, struct nfsvattr *nap, 1395 int *attrflagp, void *stuff) 1396 { 1397 u_int32_t *tl; 1398 int error = 0, len, retlen, tsiz, eof = 0; 1399 struct nfsrv_descript nfsd; 1400 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 1401 struct nfsrv_descript *nd = &nfsd; 1402 int rsize; 1403 off_t tmp_off; 1404 1405 *attrflagp = 0; 1406 tsiz = uio_uio_resid(uiop); 1407 tmp_off = uiop->uio_offset + tsiz; 1408 NFSLOCKMNT(nmp); 1409 if (tmp_off > nmp->nm_maxfilesize || tmp_off < uiop->uio_offset) { 1410 NFSUNLOCKMNT(nmp); 1411 return (EFBIG); 1412 } 1413 rsize = nmp->nm_rsize; 1414 NFSUNLOCKMNT(nmp); 1415 nd->nd_mrep = NULL; 1416 while (tsiz > 0) { 1417 *attrflagp = 0; 1418 len = (tsiz > rsize) ? rsize : tsiz; 1419 NFSCL_REQSTART(nd, NFSPROC_READ, vp); 1420 if (nd->nd_flag & ND_NFSV4) 1421 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID); 1422 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED * 3); 1423 if (nd->nd_flag & ND_NFSV2) { 1424 *tl++ = txdr_unsigned(uiop->uio_offset); 1425 *tl++ = txdr_unsigned(len); 1426 *tl = 0; 1427 } else { 1428 txdr_hyper(uiop->uio_offset, tl); 1429 *(tl + 2) = txdr_unsigned(len); 1430 } 1431 /* 1432 * Since I can't do a Getattr for NFSv4 for Write, there 1433 * doesn't seem any point in doing one here, either. 1434 * (See the comment in nfsrpc_writerpc() for more info.) 1435 */ 1436 error = nfscl_request(nd, vp, p, cred, stuff); 1437 if (error) 1438 return (error); 1439 if (nd->nd_flag & ND_NFSV3) { 1440 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 1441 } else if (!nd->nd_repstat && (nd->nd_flag & ND_NFSV2)) { 1442 error = nfsm_loadattr(nd, nap); 1443 if (!error) 1444 *attrflagp = 1; 1445 } 1446 if (nd->nd_repstat || error) { 1447 if (!error) 1448 error = nd->nd_repstat; 1449 goto nfsmout; 1450 } 1451 if (nd->nd_flag & ND_NFSV3) { 1452 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1453 eof = fxdr_unsigned(int, *(tl + 1)); 1454 } else if (nd->nd_flag & ND_NFSV4) { 1455 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 1456 eof = fxdr_unsigned(int, *tl); 1457 } 1458 NFSM_STRSIZ(retlen, len); 1459 error = nfsm_mbufuio(nd, uiop, retlen); 1460 if (error) 1461 goto nfsmout; 1462 mbuf_freem(nd->nd_mrep); 1463 nd->nd_mrep = NULL; 1464 tsiz -= retlen; 1465 if (!(nd->nd_flag & ND_NFSV2)) { 1466 if (eof || retlen == 0) 1467 tsiz = 0; 1468 } else if (retlen < len) 1469 tsiz = 0; 1470 } 1471 return (0); 1472 nfsmout: 1473 if (nd->nd_mrep != NULL) 1474 mbuf_freem(nd->nd_mrep); 1475 return (error); 1476 } 1477 1478 /* 1479 * nfs write operation 1480 * When called_from_strategy != 0, it should return EIO for an error that 1481 * indicates recovery is in progress, so that the buffer will be left 1482 * dirty and be written back to the server later. If it loops around, 1483 * the recovery thread could get stuck waiting for the buffer and recovery 1484 * will then deadlock. 1485 */ 1486 APPLESTATIC int 1487 nfsrpc_write(vnode_t vp, struct uio *uiop, int *iomode, int *must_commit, 1488 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, 1489 void *stuff, int called_from_strategy) 1490 { 1491 int error, expireret = 0, retrycnt, nostateid; 1492 u_int32_t clidrev = 0; 1493 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 1494 struct nfsnode *np = VTONFS(vp); 1495 struct ucred *newcred; 1496 struct nfsfh *nfhp = NULL; 1497 nfsv4stateid_t stateid; 1498 void *lckp; 1499 1500 *must_commit = 0; 1501 if (nmp->nm_clp != NULL) 1502 clidrev = nmp->nm_clp->nfsc_clientidrev; 1503 newcred = cred; 1504 if (NFSHASNFSV4(nmp)) { 1505 newcred = NFSNEWCRED(cred); 1506 nfhp = np->n_fhp; 1507 } 1508 retrycnt = 0; 1509 do { 1510 lckp = NULL; 1511 nostateid = 0; 1512 if (NFSHASNFSV4(nmp)) { 1513 (void)nfscl_getstateid(vp, nfhp->nfh_fh, nfhp->nfh_len, 1514 NFSV4OPEN_ACCESSWRITE, 0, newcred, p, &stateid, 1515 &lckp); 1516 if (stateid.other[0] == 0 && stateid.other[1] == 0 && 1517 stateid.other[2] == 0) { 1518 nostateid = 1; 1519 NFSCL_DEBUG(1, "stateid0 in write\n"); 1520 } 1521 } 1522 1523 /* 1524 * If there is no stateid for NFSv4, it means this is an 1525 * extraneous write after close. Basically a poorly 1526 * implemented buffer cache. Just don't do the write. 1527 */ 1528 if (nostateid) 1529 error = 0; 1530 else 1531 error = nfsrpc_writerpc(vp, uiop, iomode, must_commit, 1532 newcred, &stateid, p, nap, attrflagp, stuff); 1533 if (error == NFSERR_STALESTATEID || error == NFSERR_BADSESSION) 1534 nfscl_initiate_recovery(nmp->nm_clp); 1535 if (lckp != NULL) 1536 nfscl_lockderef(lckp); 1537 if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 1538 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 1539 error == NFSERR_OLDSTATEID || error == NFSERR_BADSESSION) { 1540 (void) nfs_catnap(PZERO, error, "nfs_write"); 1541 } else if ((error == NFSERR_EXPIRED || 1542 error == NFSERR_BADSTATEID) && clidrev != 0) { 1543 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p); 1544 } 1545 retrycnt++; 1546 } while (error == NFSERR_GRACE || error == NFSERR_DELAY || 1547 ((error == NFSERR_STALESTATEID || error == NFSERR_BADSESSION || 1548 error == NFSERR_STALEDONTRECOVER) && called_from_strategy == 0) || 1549 (error == NFSERR_OLDSTATEID && retrycnt < 20) || 1550 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) && 1551 expireret == 0 && clidrev != 0 && retrycnt < 4)); 1552 if (error != 0 && (retrycnt >= 4 || 1553 ((error == NFSERR_STALESTATEID || error == NFSERR_BADSESSION || 1554 error == NFSERR_STALEDONTRECOVER) && called_from_strategy != 0))) 1555 error = EIO; 1556 if (NFSHASNFSV4(nmp)) 1557 NFSFREECRED(newcred); 1558 return (error); 1559 } 1560 1561 /* 1562 * The actual write RPC. 1563 */ 1564 static int 1565 nfsrpc_writerpc(vnode_t vp, struct uio *uiop, int *iomode, 1566 int *must_commit, struct ucred *cred, nfsv4stateid_t *stateidp, 1567 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff) 1568 { 1569 u_int32_t *tl; 1570 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 1571 struct nfsnode *np = VTONFS(vp); 1572 int error = 0, len, tsiz, rlen, commit, committed = NFSWRITE_FILESYNC; 1573 int wccflag = 0, wsize; 1574 int32_t backup; 1575 struct nfsrv_descript nfsd; 1576 struct nfsrv_descript *nd = &nfsd; 1577 nfsattrbit_t attrbits; 1578 off_t tmp_off; 1579 1580 KASSERT(uiop->uio_iovcnt == 1, ("nfs: writerpc iovcnt > 1")); 1581 *attrflagp = 0; 1582 tsiz = uio_uio_resid(uiop); 1583 tmp_off = uiop->uio_offset + tsiz; 1584 NFSLOCKMNT(nmp); 1585 if (tmp_off > nmp->nm_maxfilesize || tmp_off < uiop->uio_offset) { 1586 NFSUNLOCKMNT(nmp); 1587 return (EFBIG); 1588 } 1589 wsize = nmp->nm_wsize; 1590 NFSUNLOCKMNT(nmp); 1591 nd->nd_mrep = NULL; /* NFSv2 sometimes does a write with */ 1592 nd->nd_repstat = 0; /* uio_resid == 0, so the while is not done */ 1593 while (tsiz > 0) { 1594 *attrflagp = 0; 1595 len = (tsiz > wsize) ? wsize : tsiz; 1596 NFSCL_REQSTART(nd, NFSPROC_WRITE, vp); 1597 if (nd->nd_flag & ND_NFSV4) { 1598 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID); 1599 NFSM_BUILD(tl, u_int32_t *, NFSX_HYPER+2*NFSX_UNSIGNED); 1600 txdr_hyper(uiop->uio_offset, tl); 1601 tl += 2; 1602 *tl++ = txdr_unsigned(*iomode); 1603 *tl = txdr_unsigned(len); 1604 } else if (nd->nd_flag & ND_NFSV3) { 1605 NFSM_BUILD(tl, u_int32_t *, NFSX_HYPER+3*NFSX_UNSIGNED); 1606 txdr_hyper(uiop->uio_offset, tl); 1607 tl += 2; 1608 *tl++ = txdr_unsigned(len); 1609 *tl++ = txdr_unsigned(*iomode); 1610 *tl = txdr_unsigned(len); 1611 } else { 1612 u_int32_t x; 1613 1614 NFSM_BUILD(tl, u_int32_t *, 4 * NFSX_UNSIGNED); 1615 /* 1616 * Not sure why someone changed this, since the 1617 * RFC clearly states that "beginoffset" and 1618 * "totalcount" are ignored, but it wouldn't 1619 * surprise me if there's a busted server out there. 1620 */ 1621 /* Set both "begin" and "current" to non-garbage. */ 1622 x = txdr_unsigned((u_int32_t)uiop->uio_offset); 1623 *tl++ = x; /* "begin offset" */ 1624 *tl++ = x; /* "current offset" */ 1625 x = txdr_unsigned(len); 1626 *tl++ = x; /* total to this offset */ 1627 *tl = x; /* size of this write */ 1628 1629 } 1630 nfsm_uiombuf(nd, uiop, len); 1631 /* 1632 * Although it is tempting to do a normal Getattr Op in the 1633 * NFSv4 compound, the result can be a nearly hung client 1634 * system if the Getattr asks for Owner and/or OwnerGroup. 1635 * It occurs when the client can't map either the Owner or 1636 * Owner_group name in the Getattr reply to a uid/gid. When 1637 * there is a cache miss, the kernel does an upcall to the 1638 * nfsuserd. Then, it can try and read the local /etc/passwd 1639 * or /etc/group file. It can then block in getnewbuf(), 1640 * waiting for dirty writes to be pushed to the NFS server. 1641 * The only reason this doesn't result in a complete 1642 * deadlock, is that the upcall times out and allows 1643 * the write to complete. However, progress is so slow 1644 * that it might just as well be deadlocked. 1645 * As such, we get the rest of the attributes, but not 1646 * Owner or Owner_group. 1647 * nb: nfscl_loadattrcache() needs to be told that these 1648 * partial attributes from a write rpc are being 1649 * passed in, via a argument flag. 1650 */ 1651 if (nd->nd_flag & ND_NFSV4) { 1652 NFSWRITEGETATTR_ATTRBIT(&attrbits); 1653 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1654 *tl = txdr_unsigned(NFSV4OP_GETATTR); 1655 (void) nfsrv_putattrbit(nd, &attrbits); 1656 } 1657 error = nfscl_request(nd, vp, p, cred, stuff); 1658 if (error) 1659 return (error); 1660 if (nd->nd_repstat) { 1661 /* 1662 * In case the rpc gets retried, roll 1663 * the uio fileds changed by nfsm_uiombuf() 1664 * back. 1665 */ 1666 uiop->uio_offset -= len; 1667 uio_uio_resid_add(uiop, len); 1668 uio_iov_base_add(uiop, -len); 1669 uio_iov_len_add(uiop, len); 1670 } 1671 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) { 1672 error = nfscl_wcc_data(nd, vp, nap, attrflagp, 1673 &wccflag, stuff); 1674 if (error) 1675 goto nfsmout; 1676 } 1677 if (!nd->nd_repstat) { 1678 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) { 1679 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED 1680 + NFSX_VERF); 1681 rlen = fxdr_unsigned(int, *tl++); 1682 if (rlen == 0) { 1683 error = NFSERR_IO; 1684 goto nfsmout; 1685 } else if (rlen < len) { 1686 backup = len - rlen; 1687 uio_iov_base_add(uiop, -(backup)); 1688 uio_iov_len_add(uiop, backup); 1689 uiop->uio_offset -= backup; 1690 uio_uio_resid_add(uiop, backup); 1691 len = rlen; 1692 } 1693 commit = fxdr_unsigned(int, *tl++); 1694 1695 /* 1696 * Return the lowest committment level 1697 * obtained by any of the RPCs. 1698 */ 1699 if (committed == NFSWRITE_FILESYNC) 1700 committed = commit; 1701 else if (committed == NFSWRITE_DATASYNC && 1702 commit == NFSWRITE_UNSTABLE) 1703 committed = commit; 1704 NFSLOCKMNT(nmp); 1705 if (!NFSHASWRITEVERF(nmp)) { 1706 NFSBCOPY((caddr_t)tl, 1707 (caddr_t)&nmp->nm_verf[0], 1708 NFSX_VERF); 1709 NFSSETWRITEVERF(nmp); 1710 } else if (NFSBCMP(tl, nmp->nm_verf, 1711 NFSX_VERF)) { 1712 *must_commit = 1; 1713 NFSBCOPY(tl, nmp->nm_verf, NFSX_VERF); 1714 } 1715 NFSUNLOCKMNT(nmp); 1716 } 1717 if (nd->nd_flag & ND_NFSV4) 1718 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1719 if (nd->nd_flag & (ND_NFSV2 | ND_NFSV4)) { 1720 error = nfsm_loadattr(nd, nap); 1721 if (!error) 1722 *attrflagp = NFS_LATTR_NOSHRINK; 1723 } 1724 } else { 1725 error = nd->nd_repstat; 1726 } 1727 if (error) 1728 goto nfsmout; 1729 NFSWRITERPC_SETTIME(wccflag, np, (nd->nd_flag & ND_NFSV4)); 1730 mbuf_freem(nd->nd_mrep); 1731 nd->nd_mrep = NULL; 1732 tsiz -= len; 1733 } 1734 nfsmout: 1735 if (nd->nd_mrep != NULL) 1736 mbuf_freem(nd->nd_mrep); 1737 *iomode = committed; 1738 if (nd->nd_repstat && !error) 1739 error = nd->nd_repstat; 1740 return (error); 1741 } 1742 1743 /* 1744 * nfs mknod rpc 1745 * For NFS v2 this is a kludge. Use a create rpc but with the IFMT bits of the 1746 * mode set to specify the file type and the size field for rdev. 1747 */ 1748 APPLESTATIC int 1749 nfsrpc_mknod(vnode_t dvp, char *name, int namelen, struct vattr *vap, 1750 u_int32_t rdev, enum vtype vtyp, struct ucred *cred, NFSPROC_T *p, 1751 struct nfsvattr *dnap, struct nfsvattr *nnap, struct nfsfh **nfhpp, 1752 int *attrflagp, int *dattrflagp, void *dstuff) 1753 { 1754 u_int32_t *tl; 1755 int error = 0; 1756 struct nfsrv_descript nfsd, *nd = &nfsd; 1757 nfsattrbit_t attrbits; 1758 1759 *nfhpp = NULL; 1760 *attrflagp = 0; 1761 *dattrflagp = 0; 1762 if (namelen > NFS_MAXNAMLEN) 1763 return (ENAMETOOLONG); 1764 NFSCL_REQSTART(nd, NFSPROC_MKNOD, dvp); 1765 if (nd->nd_flag & ND_NFSV4) { 1766 if (vtyp == VBLK || vtyp == VCHR) { 1767 NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 1768 *tl++ = vtonfsv34_type(vtyp); 1769 *tl++ = txdr_unsigned(NFSMAJOR(rdev)); 1770 *tl = txdr_unsigned(NFSMINOR(rdev)); 1771 } else { 1772 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1773 *tl = vtonfsv34_type(vtyp); 1774 } 1775 } 1776 (void) nfsm_strtom(nd, name, namelen); 1777 if (nd->nd_flag & ND_NFSV3) { 1778 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1779 *tl = vtonfsv34_type(vtyp); 1780 } 1781 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) 1782 nfscl_fillsattr(nd, vap, dvp, 0, 0); 1783 if ((nd->nd_flag & ND_NFSV3) && 1784 (vtyp == VCHR || vtyp == VBLK)) { 1785 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1786 *tl++ = txdr_unsigned(NFSMAJOR(rdev)); 1787 *tl = txdr_unsigned(NFSMINOR(rdev)); 1788 } 1789 if (nd->nd_flag & ND_NFSV4) { 1790 NFSGETATTR_ATTRBIT(&attrbits); 1791 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1792 *tl++ = txdr_unsigned(NFSV4OP_GETFH); 1793 *tl = txdr_unsigned(NFSV4OP_GETATTR); 1794 (void) nfsrv_putattrbit(nd, &attrbits); 1795 } 1796 if (nd->nd_flag & ND_NFSV2) 1797 nfscl_fillsattr(nd, vap, dvp, NFSSATTR_SIZERDEV, rdev); 1798 error = nfscl_request(nd, dvp, p, cred, dstuff); 1799 if (error) 1800 return (error); 1801 if (nd->nd_flag & ND_NFSV4) 1802 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 1803 if (!nd->nd_repstat) { 1804 if (nd->nd_flag & ND_NFSV4) { 1805 NFSM_DISSECT(tl, u_int32_t *, 5 * NFSX_UNSIGNED); 1806 error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL); 1807 if (error) 1808 goto nfsmout; 1809 } 1810 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp); 1811 if (error) 1812 goto nfsmout; 1813 } 1814 if (nd->nd_flag & ND_NFSV3) 1815 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 1816 if (!error && nd->nd_repstat) 1817 error = nd->nd_repstat; 1818 nfsmout: 1819 mbuf_freem(nd->nd_mrep); 1820 return (error); 1821 } 1822 1823 /* 1824 * nfs file create call 1825 * Mostly just call the approriate routine. (I separated out v4, so that 1826 * error recovery wouldn't be as difficult.) 1827 */ 1828 APPLESTATIC int 1829 nfsrpc_create(vnode_t dvp, char *name, int namelen, struct vattr *vap, 1830 nfsquad_t cverf, int fmode, struct ucred *cred, NFSPROC_T *p, 1831 struct nfsvattr *dnap, struct nfsvattr *nnap, struct nfsfh **nfhpp, 1832 int *attrflagp, int *dattrflagp, void *dstuff) 1833 { 1834 int error = 0, newone, expireret = 0, retrycnt, unlocked; 1835 struct nfsclowner *owp; 1836 struct nfscldeleg *dp; 1837 struct nfsmount *nmp = VFSTONFS(vnode_mount(dvp)); 1838 u_int32_t clidrev; 1839 1840 if (NFSHASNFSV4(nmp)) { 1841 retrycnt = 0; 1842 do { 1843 dp = NULL; 1844 error = nfscl_open(dvp, NULL, 0, (NFSV4OPEN_ACCESSWRITE | 1845 NFSV4OPEN_ACCESSREAD), 0, cred, p, &owp, NULL, &newone, 1846 NULL, 1); 1847 if (error) 1848 return (error); 1849 if (nmp->nm_clp != NULL) 1850 clidrev = nmp->nm_clp->nfsc_clientidrev; 1851 else 1852 clidrev = 0; 1853 error = nfsrpc_createv4(dvp, name, namelen, vap, cverf, fmode, 1854 owp, &dp, cred, p, dnap, nnap, nfhpp, attrflagp, dattrflagp, 1855 dstuff, &unlocked); 1856 /* 1857 * There is no need to invalidate cached attributes here, 1858 * since new post-delegation issue attributes are always 1859 * returned by nfsrpc_createv4() and these will update the 1860 * attribute cache. 1861 */ 1862 if (dp != NULL) 1863 (void) nfscl_deleg(nmp->nm_mountp, owp->nfsow_clp, 1864 (*nfhpp)->nfh_fh, (*nfhpp)->nfh_len, cred, p, &dp); 1865 nfscl_ownerrelease(owp, error, newone, unlocked); 1866 if (error == NFSERR_GRACE || error == NFSERR_STALECLIENTID || 1867 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 1868 error == NFSERR_BADSESSION) { 1869 (void) nfs_catnap(PZERO, error, "nfs_open"); 1870 } else if ((error == NFSERR_EXPIRED || 1871 error == NFSERR_BADSTATEID) && clidrev != 0) { 1872 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p); 1873 retrycnt++; 1874 } 1875 } while (error == NFSERR_GRACE || error == NFSERR_STALECLIENTID || 1876 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 1877 error == NFSERR_BADSESSION || 1878 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) && 1879 expireret == 0 && clidrev != 0 && retrycnt < 4)); 1880 if (error && retrycnt >= 4) 1881 error = EIO; 1882 } else { 1883 error = nfsrpc_createv23(dvp, name, namelen, vap, cverf, 1884 fmode, cred, p, dnap, nnap, nfhpp, attrflagp, dattrflagp, 1885 dstuff); 1886 } 1887 return (error); 1888 } 1889 1890 /* 1891 * The create rpc for v2 and 3. 1892 */ 1893 static int 1894 nfsrpc_createv23(vnode_t dvp, char *name, int namelen, struct vattr *vap, 1895 nfsquad_t cverf, int fmode, struct ucred *cred, NFSPROC_T *p, 1896 struct nfsvattr *dnap, struct nfsvattr *nnap, struct nfsfh **nfhpp, 1897 int *attrflagp, int *dattrflagp, void *dstuff) 1898 { 1899 u_int32_t *tl; 1900 int error = 0; 1901 struct nfsrv_descript nfsd, *nd = &nfsd; 1902 1903 *nfhpp = NULL; 1904 *attrflagp = 0; 1905 *dattrflagp = 0; 1906 if (namelen > NFS_MAXNAMLEN) 1907 return (ENAMETOOLONG); 1908 NFSCL_REQSTART(nd, NFSPROC_CREATE, dvp); 1909 (void) nfsm_strtom(nd, name, namelen); 1910 if (nd->nd_flag & ND_NFSV3) { 1911 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1912 if (fmode & O_EXCL) { 1913 *tl = txdr_unsigned(NFSCREATE_EXCLUSIVE); 1914 NFSM_BUILD(tl, u_int32_t *, NFSX_VERF); 1915 *tl++ = cverf.lval[0]; 1916 *tl = cverf.lval[1]; 1917 } else { 1918 *tl = txdr_unsigned(NFSCREATE_UNCHECKED); 1919 nfscl_fillsattr(nd, vap, dvp, 0, 0); 1920 } 1921 } else { 1922 nfscl_fillsattr(nd, vap, dvp, NFSSATTR_SIZE0, 0); 1923 } 1924 error = nfscl_request(nd, dvp, p, cred, dstuff); 1925 if (error) 1926 return (error); 1927 if (nd->nd_repstat == 0) { 1928 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp); 1929 if (error) 1930 goto nfsmout; 1931 } 1932 if (nd->nd_flag & ND_NFSV3) 1933 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 1934 if (nd->nd_repstat != 0 && error == 0) 1935 error = nd->nd_repstat; 1936 nfsmout: 1937 mbuf_freem(nd->nd_mrep); 1938 return (error); 1939 } 1940 1941 static int 1942 nfsrpc_createv4(vnode_t dvp, char *name, int namelen, struct vattr *vap, 1943 nfsquad_t cverf, int fmode, struct nfsclowner *owp, struct nfscldeleg **dpp, 1944 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap, 1945 struct nfsvattr *nnap, struct nfsfh **nfhpp, int *attrflagp, 1946 int *dattrflagp, void *dstuff, int *unlockedp) 1947 { 1948 u_int32_t *tl; 1949 int error = 0, deleg, newone, ret, acesize, limitby; 1950 struct nfsrv_descript nfsd, *nd = &nfsd; 1951 struct nfsclopen *op; 1952 struct nfscldeleg *dp = NULL; 1953 struct nfsnode *np; 1954 struct nfsfh *nfhp; 1955 nfsattrbit_t attrbits; 1956 nfsv4stateid_t stateid; 1957 u_int32_t rflags; 1958 struct nfsmount *nmp; 1959 1960 nmp = VFSTONFS(dvp->v_mount); 1961 np = VTONFS(dvp); 1962 *unlockedp = 0; 1963 *nfhpp = NULL; 1964 *dpp = NULL; 1965 *attrflagp = 0; 1966 *dattrflagp = 0; 1967 if (namelen > NFS_MAXNAMLEN) 1968 return (ENAMETOOLONG); 1969 NFSCL_REQSTART(nd, NFSPROC_CREATE, dvp); 1970 /* 1971 * For V4, this is actually an Open op. 1972 */ 1973 NFSM_BUILD(tl, u_int32_t *, 5 * NFSX_UNSIGNED); 1974 *tl++ = txdr_unsigned(owp->nfsow_seqid); 1975 *tl++ = txdr_unsigned(NFSV4OPEN_ACCESSWRITE | 1976 NFSV4OPEN_ACCESSREAD); 1977 *tl++ = txdr_unsigned(NFSV4OPEN_DENYNONE); 1978 *tl++ = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[0]; 1979 *tl = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[1]; 1980 (void) nfsm_strtom(nd, owp->nfsow_owner, NFSV4CL_LOCKNAMELEN); 1981 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1982 *tl++ = txdr_unsigned(NFSV4OPEN_CREATE); 1983 if (fmode & O_EXCL) { 1984 if (NFSHASNFSV4N(nmp)) { 1985 if (NFSHASSESSPERSIST(nmp)) { 1986 /* Use GUARDED for persistent sessions. */ 1987 *tl = txdr_unsigned(NFSCREATE_GUARDED); 1988 nfscl_fillsattr(nd, vap, dvp, 0, 0); 1989 } else { 1990 /* Otherwise, use EXCLUSIVE4_1. */ 1991 *tl = txdr_unsigned(NFSCREATE_EXCLUSIVE41); 1992 NFSM_BUILD(tl, u_int32_t *, NFSX_VERF); 1993 *tl++ = cverf.lval[0]; 1994 *tl = cverf.lval[1]; 1995 nfscl_fillsattr(nd, vap, dvp, 0, 0); 1996 } 1997 } else { 1998 /* NFSv4.0 */ 1999 *tl = txdr_unsigned(NFSCREATE_EXCLUSIVE); 2000 NFSM_BUILD(tl, u_int32_t *, NFSX_VERF); 2001 *tl++ = cverf.lval[0]; 2002 *tl = cverf.lval[1]; 2003 } 2004 } else { 2005 *tl = txdr_unsigned(NFSCREATE_UNCHECKED); 2006 nfscl_fillsattr(nd, vap, dvp, 0, 0); 2007 } 2008 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2009 *tl = txdr_unsigned(NFSV4OPEN_CLAIMNULL); 2010 (void) nfsm_strtom(nd, name, namelen); 2011 /* Get the new file's handle and attributes. */ 2012 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2013 *tl++ = txdr_unsigned(NFSV4OP_GETFH); 2014 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2015 NFSGETATTR_ATTRBIT(&attrbits); 2016 (void) nfsrv_putattrbit(nd, &attrbits); 2017 /* Get the directory's post-op attributes. */ 2018 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2019 *tl = txdr_unsigned(NFSV4OP_PUTFH); 2020 (void) nfsm_fhtom(nd, np->n_fhp->nfh_fh, np->n_fhp->nfh_len, 0); 2021 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2022 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2023 (void) nfsrv_putattrbit(nd, &attrbits); 2024 error = nfscl_request(nd, dvp, p, cred, dstuff); 2025 if (error) 2026 return (error); 2027 NFSCL_INCRSEQID(owp->nfsow_seqid, nd); 2028 if (nd->nd_repstat == 0) { 2029 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID + 2030 6 * NFSX_UNSIGNED); 2031 stateid.seqid = *tl++; 2032 stateid.other[0] = *tl++; 2033 stateid.other[1] = *tl++; 2034 stateid.other[2] = *tl; 2035 rflags = fxdr_unsigned(u_int32_t, *(tl + 6)); 2036 (void) nfsrv_getattrbits(nd, &attrbits, NULL, NULL); 2037 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2038 deleg = fxdr_unsigned(int, *tl); 2039 if (deleg == NFSV4OPEN_DELEGATEREAD || 2040 deleg == NFSV4OPEN_DELEGATEWRITE) { 2041 if (!(owp->nfsow_clp->nfsc_flags & 2042 NFSCLFLAGS_FIRSTDELEG)) 2043 owp->nfsow_clp->nfsc_flags |= 2044 (NFSCLFLAGS_FIRSTDELEG | NFSCLFLAGS_GOTDELEG); 2045 MALLOC(dp, struct nfscldeleg *, 2046 sizeof (struct nfscldeleg) + NFSX_V4FHMAX, 2047 M_NFSCLDELEG, M_WAITOK); 2048 LIST_INIT(&dp->nfsdl_owner); 2049 LIST_INIT(&dp->nfsdl_lock); 2050 dp->nfsdl_clp = owp->nfsow_clp; 2051 newnfs_copyincred(cred, &dp->nfsdl_cred); 2052 nfscl_lockinit(&dp->nfsdl_rwlock); 2053 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID + 2054 NFSX_UNSIGNED); 2055 dp->nfsdl_stateid.seqid = *tl++; 2056 dp->nfsdl_stateid.other[0] = *tl++; 2057 dp->nfsdl_stateid.other[1] = *tl++; 2058 dp->nfsdl_stateid.other[2] = *tl++; 2059 ret = fxdr_unsigned(int, *tl); 2060 if (deleg == NFSV4OPEN_DELEGATEWRITE) { 2061 dp->nfsdl_flags = NFSCLDL_WRITE; 2062 /* 2063 * Indicates how much the file can grow. 2064 */ 2065 NFSM_DISSECT(tl, u_int32_t *, 2066 3 * NFSX_UNSIGNED); 2067 limitby = fxdr_unsigned(int, *tl++); 2068 switch (limitby) { 2069 case NFSV4OPEN_LIMITSIZE: 2070 dp->nfsdl_sizelimit = fxdr_hyper(tl); 2071 break; 2072 case NFSV4OPEN_LIMITBLOCKS: 2073 dp->nfsdl_sizelimit = 2074 fxdr_unsigned(u_int64_t, *tl++); 2075 dp->nfsdl_sizelimit *= 2076 fxdr_unsigned(u_int64_t, *tl); 2077 break; 2078 default: 2079 error = NFSERR_BADXDR; 2080 goto nfsmout; 2081 }; 2082 } else { 2083 dp->nfsdl_flags = NFSCLDL_READ; 2084 } 2085 if (ret) 2086 dp->nfsdl_flags |= NFSCLDL_RECALL; 2087 error = nfsrv_dissectace(nd, &dp->nfsdl_ace, &ret, 2088 &acesize, p); 2089 if (error) 2090 goto nfsmout; 2091 } else if (deleg != NFSV4OPEN_DELEGATENONE) { 2092 error = NFSERR_BADXDR; 2093 goto nfsmout; 2094 } 2095 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp); 2096 if (error) 2097 goto nfsmout; 2098 /* Get rid of the PutFH and Getattr status values. */ 2099 NFSM_DISSECT(tl, u_int32_t *, 4 * NFSX_UNSIGNED); 2100 /* Load the directory attributes. */ 2101 error = nfsm_loadattr(nd, dnap); 2102 if (error) 2103 goto nfsmout; 2104 *dattrflagp = 1; 2105 if (dp != NULL && *attrflagp) { 2106 dp->nfsdl_change = nnap->na_filerev; 2107 dp->nfsdl_modtime = nnap->na_mtime; 2108 dp->nfsdl_flags |= NFSCLDL_MODTIMESET; 2109 } 2110 /* 2111 * We can now complete the Open state. 2112 */ 2113 nfhp = *nfhpp; 2114 if (dp != NULL) { 2115 dp->nfsdl_fhlen = nfhp->nfh_len; 2116 NFSBCOPY(nfhp->nfh_fh, dp->nfsdl_fh, nfhp->nfh_len); 2117 } 2118 /* 2119 * Get an Open structure that will be 2120 * attached to the OpenOwner, acquired already. 2121 */ 2122 error = nfscl_open(dvp, nfhp->nfh_fh, nfhp->nfh_len, 2123 (NFSV4OPEN_ACCESSWRITE | NFSV4OPEN_ACCESSREAD), 0, 2124 cred, p, NULL, &op, &newone, NULL, 0); 2125 if (error) 2126 goto nfsmout; 2127 op->nfso_stateid = stateid; 2128 newnfs_copyincred(cred, &op->nfso_cred); 2129 if ((rflags & NFSV4OPEN_RESULTCONFIRM)) { 2130 do { 2131 ret = nfsrpc_openconfirm(dvp, nfhp->nfh_fh, 2132 nfhp->nfh_len, op, cred, p); 2133 if (ret == NFSERR_DELAY) 2134 (void) nfs_catnap(PZERO, ret, "nfs_create"); 2135 } while (ret == NFSERR_DELAY); 2136 error = ret; 2137 } 2138 2139 /* 2140 * If the server is handing out delegations, but we didn't 2141 * get one because an OpenConfirm was required, try the 2142 * Open again, to get a delegation. This is a harmless no-op, 2143 * from a server's point of view. 2144 */ 2145 if ((rflags & NFSV4OPEN_RESULTCONFIRM) && 2146 (owp->nfsow_clp->nfsc_flags & NFSCLFLAGS_GOTDELEG) && 2147 !error && dp == NULL) { 2148 do { 2149 ret = nfsrpc_openrpc(VFSTONFS(vnode_mount(dvp)), dvp, 2150 np->n_fhp->nfh_fh, np->n_fhp->nfh_len, 2151 nfhp->nfh_fh, nfhp->nfh_len, 2152 (NFSV4OPEN_ACCESSWRITE | NFSV4OPEN_ACCESSREAD), op, 2153 name, namelen, &dp, 0, 0x0, cred, p, 0, 1); 2154 if (ret == NFSERR_DELAY) 2155 (void) nfs_catnap(PZERO, ret, "nfs_crt2"); 2156 } while (ret == NFSERR_DELAY); 2157 if (ret) { 2158 if (dp != NULL) { 2159 FREE((caddr_t)dp, M_NFSCLDELEG); 2160 dp = NULL; 2161 } 2162 if (ret == NFSERR_STALECLIENTID || 2163 ret == NFSERR_STALEDONTRECOVER || 2164 ret == NFSERR_BADSESSION) 2165 error = ret; 2166 } 2167 } 2168 nfscl_openrelease(op, error, newone); 2169 *unlockedp = 1; 2170 } 2171 if (nd->nd_repstat != 0 && error == 0) 2172 error = nd->nd_repstat; 2173 if (error == NFSERR_STALECLIENTID || error == NFSERR_BADSESSION) 2174 nfscl_initiate_recovery(owp->nfsow_clp); 2175 nfsmout: 2176 if (!error) 2177 *dpp = dp; 2178 else if (dp != NULL) 2179 FREE((caddr_t)dp, M_NFSCLDELEG); 2180 mbuf_freem(nd->nd_mrep); 2181 return (error); 2182 } 2183 2184 /* 2185 * Nfs remove rpc 2186 */ 2187 APPLESTATIC int 2188 nfsrpc_remove(vnode_t dvp, char *name, int namelen, vnode_t vp, 2189 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap, int *dattrflagp, 2190 void *dstuff) 2191 { 2192 u_int32_t *tl; 2193 struct nfsrv_descript nfsd, *nd = &nfsd; 2194 struct nfsnode *np; 2195 struct nfsmount *nmp; 2196 nfsv4stateid_t dstateid; 2197 int error, ret = 0, i; 2198 2199 *dattrflagp = 0; 2200 if (namelen > NFS_MAXNAMLEN) 2201 return (ENAMETOOLONG); 2202 nmp = VFSTONFS(vnode_mount(dvp)); 2203 tryagain: 2204 if (NFSHASNFSV4(nmp) && ret == 0) { 2205 ret = nfscl_removedeleg(vp, p, &dstateid); 2206 if (ret == 1) { 2207 NFSCL_REQSTART(nd, NFSPROC_RETDELEGREMOVE, vp); 2208 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID + 2209 NFSX_UNSIGNED); 2210 if (NFSHASNFSV4N(nmp)) 2211 *tl++ = 0; 2212 else 2213 *tl++ = dstateid.seqid; 2214 *tl++ = dstateid.other[0]; 2215 *tl++ = dstateid.other[1]; 2216 *tl++ = dstateid.other[2]; 2217 *tl = txdr_unsigned(NFSV4OP_PUTFH); 2218 np = VTONFS(dvp); 2219 (void) nfsm_fhtom(nd, np->n_fhp->nfh_fh, 2220 np->n_fhp->nfh_len, 0); 2221 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2222 *tl = txdr_unsigned(NFSV4OP_REMOVE); 2223 } 2224 } else { 2225 ret = 0; 2226 } 2227 if (ret == 0) 2228 NFSCL_REQSTART(nd, NFSPROC_REMOVE, dvp); 2229 (void) nfsm_strtom(nd, name, namelen); 2230 error = nfscl_request(nd, dvp, p, cred, dstuff); 2231 if (error) 2232 return (error); 2233 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) { 2234 /* For NFSv4, parse out any Delereturn replies. */ 2235 if (ret > 0 && nd->nd_repstat != 0 && 2236 (nd->nd_flag & ND_NOMOREDATA)) { 2237 /* 2238 * If the Delegreturn failed, try again without 2239 * it. The server will Recall, as required. 2240 */ 2241 mbuf_freem(nd->nd_mrep); 2242 goto tryagain; 2243 } 2244 for (i = 0; i < (ret * 2); i++) { 2245 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == 2246 ND_NFSV4) { 2247 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2248 if (*(tl + 1)) 2249 nd->nd_flag |= ND_NOMOREDATA; 2250 } 2251 } 2252 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 2253 } 2254 if (nd->nd_repstat && !error) 2255 error = nd->nd_repstat; 2256 nfsmout: 2257 mbuf_freem(nd->nd_mrep); 2258 return (error); 2259 } 2260 2261 /* 2262 * Do an nfs rename rpc. 2263 */ 2264 APPLESTATIC int 2265 nfsrpc_rename(vnode_t fdvp, vnode_t fvp, char *fnameptr, int fnamelen, 2266 vnode_t tdvp, vnode_t tvp, char *tnameptr, int tnamelen, struct ucred *cred, 2267 NFSPROC_T *p, struct nfsvattr *fnap, struct nfsvattr *tnap, 2268 int *fattrflagp, int *tattrflagp, void *fstuff, void *tstuff) 2269 { 2270 u_int32_t *tl; 2271 struct nfsrv_descript nfsd, *nd = &nfsd; 2272 struct nfsmount *nmp; 2273 struct nfsnode *np; 2274 nfsattrbit_t attrbits; 2275 nfsv4stateid_t fdstateid, tdstateid; 2276 int error = 0, ret = 0, gottd = 0, gotfd = 0, i; 2277 2278 *fattrflagp = 0; 2279 *tattrflagp = 0; 2280 nmp = VFSTONFS(vnode_mount(fdvp)); 2281 if (fnamelen > NFS_MAXNAMLEN || tnamelen > NFS_MAXNAMLEN) 2282 return (ENAMETOOLONG); 2283 tryagain: 2284 if (NFSHASNFSV4(nmp) && ret == 0) { 2285 ret = nfscl_renamedeleg(fvp, &fdstateid, &gotfd, tvp, 2286 &tdstateid, &gottd, p); 2287 if (gotfd && gottd) { 2288 NFSCL_REQSTART(nd, NFSPROC_RETDELEGRENAME2, fvp); 2289 } else if (gotfd) { 2290 NFSCL_REQSTART(nd, NFSPROC_RETDELEGRENAME1, fvp); 2291 } else if (gottd) { 2292 NFSCL_REQSTART(nd, NFSPROC_RETDELEGRENAME1, tvp); 2293 } 2294 if (gotfd) { 2295 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID); 2296 if (NFSHASNFSV4N(nmp)) 2297 *tl++ = 0; 2298 else 2299 *tl++ = fdstateid.seqid; 2300 *tl++ = fdstateid.other[0]; 2301 *tl++ = fdstateid.other[1]; 2302 *tl = fdstateid.other[2]; 2303 if (gottd) { 2304 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2305 *tl = txdr_unsigned(NFSV4OP_PUTFH); 2306 np = VTONFS(tvp); 2307 (void) nfsm_fhtom(nd, np->n_fhp->nfh_fh, 2308 np->n_fhp->nfh_len, 0); 2309 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2310 *tl = txdr_unsigned(NFSV4OP_DELEGRETURN); 2311 } 2312 } 2313 if (gottd) { 2314 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID); 2315 if (NFSHASNFSV4N(nmp)) 2316 *tl++ = 0; 2317 else 2318 *tl++ = tdstateid.seqid; 2319 *tl++ = tdstateid.other[0]; 2320 *tl++ = tdstateid.other[1]; 2321 *tl = tdstateid.other[2]; 2322 } 2323 if (ret > 0) { 2324 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2325 *tl = txdr_unsigned(NFSV4OP_PUTFH); 2326 np = VTONFS(fdvp); 2327 (void) nfsm_fhtom(nd, np->n_fhp->nfh_fh, 2328 np->n_fhp->nfh_len, 0); 2329 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2330 *tl = txdr_unsigned(NFSV4OP_SAVEFH); 2331 } 2332 } else { 2333 ret = 0; 2334 } 2335 if (ret == 0) 2336 NFSCL_REQSTART(nd, NFSPROC_RENAME, fdvp); 2337 if (nd->nd_flag & ND_NFSV4) { 2338 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2339 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2340 NFSWCCATTR_ATTRBIT(&attrbits); 2341 (void) nfsrv_putattrbit(nd, &attrbits); 2342 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2343 *tl = txdr_unsigned(NFSV4OP_PUTFH); 2344 (void) nfsm_fhtom(nd, VTONFS(tdvp)->n_fhp->nfh_fh, 2345 VTONFS(tdvp)->n_fhp->nfh_len, 0); 2346 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2347 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2348 (void) nfsrv_putattrbit(nd, &attrbits); 2349 nd->nd_flag |= ND_V4WCCATTR; 2350 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2351 *tl = txdr_unsigned(NFSV4OP_RENAME); 2352 } 2353 (void) nfsm_strtom(nd, fnameptr, fnamelen); 2354 if (!(nd->nd_flag & ND_NFSV4)) 2355 (void) nfsm_fhtom(nd, VTONFS(tdvp)->n_fhp->nfh_fh, 2356 VTONFS(tdvp)->n_fhp->nfh_len, 0); 2357 (void) nfsm_strtom(nd, tnameptr, tnamelen); 2358 error = nfscl_request(nd, fdvp, p, cred, fstuff); 2359 if (error) 2360 return (error); 2361 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) { 2362 /* For NFSv4, parse out any Delereturn replies. */ 2363 if (ret > 0 && nd->nd_repstat != 0 && 2364 (nd->nd_flag & ND_NOMOREDATA)) { 2365 /* 2366 * If the Delegreturn failed, try again without 2367 * it. The server will Recall, as required. 2368 */ 2369 mbuf_freem(nd->nd_mrep); 2370 goto tryagain; 2371 } 2372 for (i = 0; i < (ret * 2); i++) { 2373 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == 2374 ND_NFSV4) { 2375 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2376 if (*(tl + 1)) { 2377 if (i == 0 && ret > 1) { 2378 /* 2379 * If the Delegreturn failed, try again 2380 * without it. The server will Recall, as 2381 * required. 2382 * If ret > 1, the first iteration of this 2383 * loop is the second DelegReturn result. 2384 */ 2385 mbuf_freem(nd->nd_mrep); 2386 goto tryagain; 2387 } else { 2388 nd->nd_flag |= ND_NOMOREDATA; 2389 } 2390 } 2391 } 2392 } 2393 /* Now, the first wcc attribute reply. */ 2394 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == ND_NFSV4) { 2395 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2396 if (*(tl + 1)) 2397 nd->nd_flag |= ND_NOMOREDATA; 2398 } 2399 error = nfscl_wcc_data(nd, fdvp, fnap, fattrflagp, NULL, 2400 fstuff); 2401 /* and the second wcc attribute reply. */ 2402 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == ND_NFSV4 && 2403 !error) { 2404 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2405 if (*(tl + 1)) 2406 nd->nd_flag |= ND_NOMOREDATA; 2407 } 2408 if (!error) 2409 error = nfscl_wcc_data(nd, tdvp, tnap, tattrflagp, 2410 NULL, tstuff); 2411 } 2412 if (nd->nd_repstat && !error) 2413 error = nd->nd_repstat; 2414 nfsmout: 2415 mbuf_freem(nd->nd_mrep); 2416 return (error); 2417 } 2418 2419 /* 2420 * nfs hard link create rpc 2421 */ 2422 APPLESTATIC int 2423 nfsrpc_link(vnode_t dvp, vnode_t vp, char *name, int namelen, 2424 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap, 2425 struct nfsvattr *nap, int *attrflagp, int *dattrflagp, void *dstuff) 2426 { 2427 u_int32_t *tl; 2428 struct nfsrv_descript nfsd, *nd = &nfsd; 2429 nfsattrbit_t attrbits; 2430 int error = 0; 2431 2432 *attrflagp = 0; 2433 *dattrflagp = 0; 2434 if (namelen > NFS_MAXNAMLEN) 2435 return (ENAMETOOLONG); 2436 NFSCL_REQSTART(nd, NFSPROC_LINK, vp); 2437 if (nd->nd_flag & ND_NFSV4) { 2438 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2439 *tl = txdr_unsigned(NFSV4OP_PUTFH); 2440 } 2441 (void) nfsm_fhtom(nd, VTONFS(dvp)->n_fhp->nfh_fh, 2442 VTONFS(dvp)->n_fhp->nfh_len, 0); 2443 if (nd->nd_flag & ND_NFSV4) { 2444 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2445 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2446 NFSWCCATTR_ATTRBIT(&attrbits); 2447 (void) nfsrv_putattrbit(nd, &attrbits); 2448 nd->nd_flag |= ND_V4WCCATTR; 2449 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2450 *tl = txdr_unsigned(NFSV4OP_LINK); 2451 } 2452 (void) nfsm_strtom(nd, name, namelen); 2453 error = nfscl_request(nd, vp, p, cred, dstuff); 2454 if (error) 2455 return (error); 2456 if (nd->nd_flag & ND_NFSV3) { 2457 error = nfscl_postop_attr(nd, nap, attrflagp, dstuff); 2458 if (!error) 2459 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, 2460 NULL, dstuff); 2461 } else if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == ND_NFSV4) { 2462 /* 2463 * First, parse out the PutFH and Getattr result. 2464 */ 2465 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2466 if (!(*(tl + 1))) 2467 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2468 if (*(tl + 1)) 2469 nd->nd_flag |= ND_NOMOREDATA; 2470 /* 2471 * Get the pre-op attributes. 2472 */ 2473 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 2474 } 2475 if (nd->nd_repstat && !error) 2476 error = nd->nd_repstat; 2477 nfsmout: 2478 mbuf_freem(nd->nd_mrep); 2479 return (error); 2480 } 2481 2482 /* 2483 * nfs symbolic link create rpc 2484 */ 2485 APPLESTATIC int 2486 nfsrpc_symlink(vnode_t dvp, char *name, int namelen, char *target, 2487 struct vattr *vap, struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap, 2488 struct nfsvattr *nnap, struct nfsfh **nfhpp, int *attrflagp, 2489 int *dattrflagp, void *dstuff) 2490 { 2491 u_int32_t *tl; 2492 struct nfsrv_descript nfsd, *nd = &nfsd; 2493 struct nfsmount *nmp; 2494 int slen, error = 0; 2495 2496 *nfhpp = NULL; 2497 *attrflagp = 0; 2498 *dattrflagp = 0; 2499 nmp = VFSTONFS(vnode_mount(dvp)); 2500 slen = strlen(target); 2501 if (slen > NFS_MAXPATHLEN || namelen > NFS_MAXNAMLEN) 2502 return (ENAMETOOLONG); 2503 NFSCL_REQSTART(nd, NFSPROC_SYMLINK, dvp); 2504 if (nd->nd_flag & ND_NFSV4) { 2505 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2506 *tl = txdr_unsigned(NFLNK); 2507 (void) nfsm_strtom(nd, target, slen); 2508 } 2509 (void) nfsm_strtom(nd, name, namelen); 2510 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) 2511 nfscl_fillsattr(nd, vap, dvp, 0, 0); 2512 if (!(nd->nd_flag & ND_NFSV4)) 2513 (void) nfsm_strtom(nd, target, slen); 2514 if (nd->nd_flag & ND_NFSV2) 2515 nfscl_fillsattr(nd, vap, dvp, NFSSATTR_SIZENEG1, 0); 2516 error = nfscl_request(nd, dvp, p, cred, dstuff); 2517 if (error) 2518 return (error); 2519 if (nd->nd_flag & ND_NFSV4) 2520 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 2521 if ((nd->nd_flag & ND_NFSV3) && !error) { 2522 if (!nd->nd_repstat) 2523 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp); 2524 if (!error) 2525 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, 2526 NULL, dstuff); 2527 } 2528 if (nd->nd_repstat && !error) 2529 error = nd->nd_repstat; 2530 mbuf_freem(nd->nd_mrep); 2531 /* 2532 * Kludge: Map EEXIST => 0 assuming that it is a reply to a retry. 2533 */ 2534 if (error == EEXIST) 2535 error = 0; 2536 return (error); 2537 } 2538 2539 /* 2540 * nfs make dir rpc 2541 */ 2542 APPLESTATIC int 2543 nfsrpc_mkdir(vnode_t dvp, char *name, int namelen, struct vattr *vap, 2544 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap, 2545 struct nfsvattr *nnap, struct nfsfh **nfhpp, int *attrflagp, 2546 int *dattrflagp, void *dstuff) 2547 { 2548 u_int32_t *tl; 2549 struct nfsrv_descript nfsd, *nd = &nfsd; 2550 nfsattrbit_t attrbits; 2551 int error = 0; 2552 struct nfsfh *fhp; 2553 2554 *nfhpp = NULL; 2555 *attrflagp = 0; 2556 *dattrflagp = 0; 2557 fhp = VTONFS(dvp)->n_fhp; 2558 if (namelen > NFS_MAXNAMLEN) 2559 return (ENAMETOOLONG); 2560 NFSCL_REQSTART(nd, NFSPROC_MKDIR, dvp); 2561 if (nd->nd_flag & ND_NFSV4) { 2562 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2563 *tl = txdr_unsigned(NFDIR); 2564 } 2565 (void) nfsm_strtom(nd, name, namelen); 2566 nfscl_fillsattr(nd, vap, dvp, NFSSATTR_SIZENEG1, 0); 2567 if (nd->nd_flag & ND_NFSV4) { 2568 NFSGETATTR_ATTRBIT(&attrbits); 2569 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2570 *tl++ = txdr_unsigned(NFSV4OP_GETFH); 2571 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2572 (void) nfsrv_putattrbit(nd, &attrbits); 2573 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2574 *tl = txdr_unsigned(NFSV4OP_PUTFH); 2575 (void) nfsm_fhtom(nd, fhp->nfh_fh, fhp->nfh_len, 0); 2576 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2577 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2578 (void) nfsrv_putattrbit(nd, &attrbits); 2579 } 2580 error = nfscl_request(nd, dvp, p, cred, dstuff); 2581 if (error) 2582 return (error); 2583 if (nd->nd_flag & ND_NFSV4) 2584 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 2585 if (!nd->nd_repstat && !error) { 2586 if (nd->nd_flag & ND_NFSV4) { 2587 NFSM_DISSECT(tl, u_int32_t *, 5 * NFSX_UNSIGNED); 2588 error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL); 2589 } 2590 if (!error) 2591 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp); 2592 if (error == 0 && (nd->nd_flag & ND_NFSV4) != 0) { 2593 /* Get rid of the PutFH and Getattr status values. */ 2594 NFSM_DISSECT(tl, u_int32_t *, 4 * NFSX_UNSIGNED); 2595 /* Load the directory attributes. */ 2596 error = nfsm_loadattr(nd, dnap); 2597 if (error == 0) 2598 *dattrflagp = 1; 2599 } 2600 } 2601 if ((nd->nd_flag & ND_NFSV3) && !error) 2602 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 2603 if (nd->nd_repstat && !error) 2604 error = nd->nd_repstat; 2605 nfsmout: 2606 mbuf_freem(nd->nd_mrep); 2607 /* 2608 * Kludge: Map EEXIST => 0 assuming that you have a reply to a retry. 2609 */ 2610 if (error == EEXIST) 2611 error = 0; 2612 return (error); 2613 } 2614 2615 /* 2616 * nfs remove directory call 2617 */ 2618 APPLESTATIC int 2619 nfsrpc_rmdir(vnode_t dvp, char *name, int namelen, struct ucred *cred, 2620 NFSPROC_T *p, struct nfsvattr *dnap, int *dattrflagp, void *dstuff) 2621 { 2622 struct nfsrv_descript nfsd, *nd = &nfsd; 2623 int error = 0; 2624 2625 *dattrflagp = 0; 2626 if (namelen > NFS_MAXNAMLEN) 2627 return (ENAMETOOLONG); 2628 NFSCL_REQSTART(nd, NFSPROC_RMDIR, dvp); 2629 (void) nfsm_strtom(nd, name, namelen); 2630 error = nfscl_request(nd, dvp, p, cred, dstuff); 2631 if (error) 2632 return (error); 2633 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) 2634 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 2635 if (nd->nd_repstat && !error) 2636 error = nd->nd_repstat; 2637 mbuf_freem(nd->nd_mrep); 2638 /* 2639 * Kludge: Map ENOENT => 0 assuming that you have a reply to a retry. 2640 */ 2641 if (error == ENOENT) 2642 error = 0; 2643 return (error); 2644 } 2645 2646 /* 2647 * Readdir rpc. 2648 * Always returns with either uio_resid unchanged, if you are at the 2649 * end of the directory, or uio_resid == 0, with all DIRBLKSIZ chunks 2650 * filled in. 2651 * I felt this would allow caching of directory blocks more easily 2652 * than returning a pertially filled block. 2653 * Directory offset cookies: 2654 * Oh my, what to do with them... 2655 * I can think of three ways to deal with them: 2656 * 1 - have the layer above these RPCs maintain a map between logical 2657 * directory byte offsets and the NFS directory offset cookies 2658 * 2 - pass the opaque directory offset cookies up into userland 2659 * and let the libc functions deal with them, via the system call 2660 * 3 - return them to userland in the "struct dirent", so future versions 2661 * of libc can use them and do whatever is necessary to amke things work 2662 * above these rpc calls, in the meantime 2663 * For now, I do #3 by "hiding" the directory offset cookies after the 2664 * d_name field in struct dirent. This is space inside d_reclen that 2665 * will be ignored by anything that doesn't know about them. 2666 * The directory offset cookies are filled in as the last 8 bytes of 2667 * each directory entry, after d_name. Someday, the userland libc 2668 * functions may be able to use these. In the meantime, it satisfies 2669 * OpenBSD's requirements for cookies being returned. 2670 * If expects the directory offset cookie for the read to be in uio_offset 2671 * and returns the one for the next entry after this directory block in 2672 * there, as well. 2673 */ 2674 APPLESTATIC int 2675 nfsrpc_readdir(vnode_t vp, struct uio *uiop, nfsuint64 *cookiep, 2676 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, 2677 int *eofp, void *stuff) 2678 { 2679 int len, left; 2680 struct dirent *dp = NULL; 2681 u_int32_t *tl; 2682 nfsquad_t cookie, ncookie; 2683 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 2684 struct nfsnode *dnp = VTONFS(vp); 2685 struct nfsvattr nfsva; 2686 struct nfsrv_descript nfsd, *nd = &nfsd; 2687 int error = 0, tlen, more_dirs = 1, blksiz = 0, bigenough = 1; 2688 int reqsize, tryformoredirs = 1, readsize, eof = 0, gotmnton = 0; 2689 long dotfileid, dotdotfileid = 0; 2690 u_int32_t fakefileno = 0xffffffff, rderr; 2691 char *cp; 2692 nfsattrbit_t attrbits, dattrbits; 2693 u_int32_t *tl2 = NULL; 2694 size_t tresid; 2695 2696 KASSERT(uiop->uio_iovcnt == 1 && 2697 (uio_uio_resid(uiop) & (DIRBLKSIZ - 1)) == 0, 2698 ("nfs readdirrpc bad uio")); 2699 2700 /* 2701 * There is no point in reading a lot more than uio_resid, however 2702 * adding one additional DIRBLKSIZ makes sense. Since uio_resid 2703 * and nm_readdirsize are both exact multiples of DIRBLKSIZ, this 2704 * will never make readsize > nm_readdirsize. 2705 */ 2706 readsize = nmp->nm_readdirsize; 2707 if (readsize > uio_uio_resid(uiop)) 2708 readsize = uio_uio_resid(uiop) + DIRBLKSIZ; 2709 2710 *attrflagp = 0; 2711 if (eofp) 2712 *eofp = 0; 2713 tresid = uio_uio_resid(uiop); 2714 cookie.lval[0] = cookiep->nfsuquad[0]; 2715 cookie.lval[1] = cookiep->nfsuquad[1]; 2716 nd->nd_mrep = NULL; 2717 2718 /* 2719 * For NFSv4, first create the "." and ".." entries. 2720 */ 2721 if (NFSHASNFSV4(nmp)) { 2722 reqsize = 6 * NFSX_UNSIGNED; 2723 NFSGETATTR_ATTRBIT(&dattrbits); 2724 NFSZERO_ATTRBIT(&attrbits); 2725 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_FILEID); 2726 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_TYPE); 2727 if (NFSISSET_ATTRBIT(&dnp->n_vattr.na_suppattr, 2728 NFSATTRBIT_MOUNTEDONFILEID)) { 2729 NFSSETBIT_ATTRBIT(&attrbits, 2730 NFSATTRBIT_MOUNTEDONFILEID); 2731 gotmnton = 1; 2732 } else { 2733 /* 2734 * Must fake it. Use the fileno, except when the 2735 * fsid is != to that of the directory. For that 2736 * case, generate a fake fileno that is not the same. 2737 */ 2738 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_FSID); 2739 gotmnton = 0; 2740 } 2741 2742 /* 2743 * Joy, oh joy. For V4 we get to hand craft '.' and '..'. 2744 */ 2745 if (uiop->uio_offset == 0) { 2746 NFSCL_REQSTART(nd, NFSPROC_LOOKUPP, vp); 2747 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2748 *tl++ = txdr_unsigned(NFSV4OP_GETFH); 2749 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2750 (void) nfsrv_putattrbit(nd, &attrbits); 2751 error = nfscl_request(nd, vp, p, cred, stuff); 2752 if (error) 2753 return (error); 2754 dotfileid = 0; /* Fake out the compiler. */ 2755 if ((nd->nd_flag & ND_NOMOREDATA) == 0) { 2756 error = nfsm_loadattr(nd, &nfsva); 2757 if (error != 0) 2758 goto nfsmout; 2759 dotfileid = nfsva.na_fileid; 2760 } 2761 if (nd->nd_repstat == 0) { 2762 NFSM_DISSECT(tl, u_int32_t *, 5 * NFSX_UNSIGNED); 2763 len = fxdr_unsigned(int, *(tl + 4)); 2764 if (len > 0 && len <= NFSX_V4FHMAX) 2765 error = nfsm_advance(nd, NFSM_RNDUP(len), -1); 2766 else 2767 error = EPERM; 2768 if (!error) { 2769 NFSM_DISSECT(tl, u_int32_t *, 2*NFSX_UNSIGNED); 2770 nfsva.na_mntonfileno = 0xffffffff; 2771 error = nfsv4_loadattr(nd, NULL, &nfsva, NULL, 2772 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0, 2773 NULL, NULL, NULL, p, cred); 2774 if (error) { 2775 dotdotfileid = dotfileid; 2776 } else if (gotmnton) { 2777 if (nfsva.na_mntonfileno != 0xffffffff) 2778 dotdotfileid = nfsva.na_mntonfileno; 2779 else 2780 dotdotfileid = nfsva.na_fileid; 2781 } else if (nfsva.na_filesid[0] == 2782 dnp->n_vattr.na_filesid[0] && 2783 nfsva.na_filesid[1] == 2784 dnp->n_vattr.na_filesid[1]) { 2785 dotdotfileid = nfsva.na_fileid; 2786 } else { 2787 do { 2788 fakefileno--; 2789 } while (fakefileno == 2790 nfsva.na_fileid); 2791 dotdotfileid = fakefileno; 2792 } 2793 } 2794 } else if (nd->nd_repstat == NFSERR_NOENT) { 2795 /* 2796 * Lookupp returns NFSERR_NOENT when we are 2797 * at the root, so just use the current dir. 2798 */ 2799 nd->nd_repstat = 0; 2800 dotdotfileid = dotfileid; 2801 } else { 2802 error = nd->nd_repstat; 2803 } 2804 mbuf_freem(nd->nd_mrep); 2805 if (error) 2806 return (error); 2807 nd->nd_mrep = NULL; 2808 dp = (struct dirent *) CAST_DOWN(caddr_t, uio_iov_base(uiop)); 2809 dp->d_type = DT_DIR; 2810 dp->d_fileno = dotfileid; 2811 dp->d_namlen = 1; 2812 dp->d_name[0] = '.'; 2813 dp->d_name[1] = '\0'; 2814 dp->d_reclen = DIRENT_SIZE(dp) + NFSX_HYPER; 2815 /* 2816 * Just make these offset cookie 0. 2817 */ 2818 tl = (u_int32_t *)&dp->d_name[4]; 2819 *tl++ = 0; 2820 *tl = 0; 2821 blksiz += dp->d_reclen; 2822 uio_uio_resid_add(uiop, -(dp->d_reclen)); 2823 uiop->uio_offset += dp->d_reclen; 2824 uio_iov_base_add(uiop, dp->d_reclen); 2825 uio_iov_len_add(uiop, -(dp->d_reclen)); 2826 dp = (struct dirent *) CAST_DOWN(caddr_t, uio_iov_base(uiop)); 2827 dp->d_type = DT_DIR; 2828 dp->d_fileno = dotdotfileid; 2829 dp->d_namlen = 2; 2830 dp->d_name[0] = '.'; 2831 dp->d_name[1] = '.'; 2832 dp->d_name[2] = '\0'; 2833 dp->d_reclen = DIRENT_SIZE(dp) + NFSX_HYPER; 2834 /* 2835 * Just make these offset cookie 0. 2836 */ 2837 tl = (u_int32_t *)&dp->d_name[4]; 2838 *tl++ = 0; 2839 *tl = 0; 2840 blksiz += dp->d_reclen; 2841 uio_uio_resid_add(uiop, -(dp->d_reclen)); 2842 uiop->uio_offset += dp->d_reclen; 2843 uio_iov_base_add(uiop, dp->d_reclen); 2844 uio_iov_len_add(uiop, -(dp->d_reclen)); 2845 } 2846 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_RDATTRERROR); 2847 } else { 2848 reqsize = 5 * NFSX_UNSIGNED; 2849 } 2850 2851 2852 /* 2853 * Loop around doing readdir rpc's of size readsize. 2854 * The stopping criteria is EOF or buffer full. 2855 */ 2856 while (more_dirs && bigenough) { 2857 *attrflagp = 0; 2858 NFSCL_REQSTART(nd, NFSPROC_READDIR, vp); 2859 if (nd->nd_flag & ND_NFSV2) { 2860 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2861 *tl++ = cookie.lval[1]; 2862 *tl = txdr_unsigned(readsize); 2863 } else { 2864 NFSM_BUILD(tl, u_int32_t *, reqsize); 2865 *tl++ = cookie.lval[0]; 2866 *tl++ = cookie.lval[1]; 2867 if (cookie.qval == 0) { 2868 *tl++ = 0; 2869 *tl++ = 0; 2870 } else { 2871 NFSLOCKNODE(dnp); 2872 *tl++ = dnp->n_cookieverf.nfsuquad[0]; 2873 *tl++ = dnp->n_cookieverf.nfsuquad[1]; 2874 NFSUNLOCKNODE(dnp); 2875 } 2876 if (nd->nd_flag & ND_NFSV4) { 2877 *tl++ = txdr_unsigned(readsize); 2878 *tl = txdr_unsigned(readsize); 2879 (void) nfsrv_putattrbit(nd, &attrbits); 2880 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2881 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2882 (void) nfsrv_putattrbit(nd, &dattrbits); 2883 } else { 2884 *tl = txdr_unsigned(readsize); 2885 } 2886 } 2887 error = nfscl_request(nd, vp, p, cred, stuff); 2888 if (error) 2889 return (error); 2890 if (!(nd->nd_flag & ND_NFSV2)) { 2891 if (nd->nd_flag & ND_NFSV3) 2892 error = nfscl_postop_attr(nd, nap, attrflagp, 2893 stuff); 2894 if (!nd->nd_repstat && !error) { 2895 NFSM_DISSECT(tl, u_int32_t *, NFSX_HYPER); 2896 NFSLOCKNODE(dnp); 2897 dnp->n_cookieverf.nfsuquad[0] = *tl++; 2898 dnp->n_cookieverf.nfsuquad[1] = *tl; 2899 NFSUNLOCKNODE(dnp); 2900 } 2901 } 2902 if (nd->nd_repstat || error) { 2903 if (!error) 2904 error = nd->nd_repstat; 2905 goto nfsmout; 2906 } 2907 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2908 more_dirs = fxdr_unsigned(int, *tl); 2909 if (!more_dirs) 2910 tryformoredirs = 0; 2911 2912 /* loop thru the dir entries, doctoring them to 4bsd form */ 2913 while (more_dirs && bigenough) { 2914 if (nd->nd_flag & ND_NFSV4) { 2915 NFSM_DISSECT(tl, u_int32_t *, 3*NFSX_UNSIGNED); 2916 ncookie.lval[0] = *tl++; 2917 ncookie.lval[1] = *tl++; 2918 len = fxdr_unsigned(int, *tl); 2919 } else if (nd->nd_flag & ND_NFSV3) { 2920 NFSM_DISSECT(tl, u_int32_t *, 3*NFSX_UNSIGNED); 2921 nfsva.na_fileid = fxdr_hyper(tl); 2922 tl += 2; 2923 len = fxdr_unsigned(int, *tl); 2924 } else { 2925 NFSM_DISSECT(tl, u_int32_t *, 2*NFSX_UNSIGNED); 2926 nfsva.na_fileid = 2927 fxdr_unsigned(long, *tl++); 2928 len = fxdr_unsigned(int, *tl); 2929 } 2930 if (len <= 0 || len > NFS_MAXNAMLEN) { 2931 error = EBADRPC; 2932 goto nfsmout; 2933 } 2934 tlen = NFSM_RNDUP(len); 2935 if (tlen == len) 2936 tlen += 4; /* To ensure null termination */ 2937 left = DIRBLKSIZ - blksiz; 2938 if ((int)(tlen + DIRHDSIZ + NFSX_HYPER) > left) { 2939 dp->d_reclen += left; 2940 uio_iov_base_add(uiop, left); 2941 uio_iov_len_add(uiop, -(left)); 2942 uio_uio_resid_add(uiop, -(left)); 2943 uiop->uio_offset += left; 2944 blksiz = 0; 2945 } 2946 if ((int)(tlen + DIRHDSIZ + NFSX_HYPER) > uio_uio_resid(uiop)) 2947 bigenough = 0; 2948 if (bigenough) { 2949 dp = (struct dirent *) CAST_DOWN(caddr_t, uio_iov_base(uiop)); 2950 dp->d_namlen = len; 2951 dp->d_reclen = tlen + DIRHDSIZ + NFSX_HYPER; 2952 dp->d_type = DT_UNKNOWN; 2953 blksiz += dp->d_reclen; 2954 if (blksiz == DIRBLKSIZ) 2955 blksiz = 0; 2956 uio_uio_resid_add(uiop, -(DIRHDSIZ)); 2957 uiop->uio_offset += DIRHDSIZ; 2958 uio_iov_base_add(uiop, DIRHDSIZ); 2959 uio_iov_len_add(uiop, -(DIRHDSIZ)); 2960 error = nfsm_mbufuio(nd, uiop, len); 2961 if (error) 2962 goto nfsmout; 2963 cp = CAST_DOWN(caddr_t, uio_iov_base(uiop)); 2964 tlen -= len; 2965 *cp = '\0'; /* null terminate */ 2966 cp += tlen; /* points to cookie storage */ 2967 tl2 = (u_int32_t *)cp; 2968 uio_iov_base_add(uiop, (tlen + NFSX_HYPER)); 2969 uio_iov_len_add(uiop, -(tlen + NFSX_HYPER)); 2970 uio_uio_resid_add(uiop, -(tlen + NFSX_HYPER)); 2971 uiop->uio_offset += (tlen + NFSX_HYPER); 2972 } else { 2973 error = nfsm_advance(nd, NFSM_RNDUP(len), -1); 2974 if (error) 2975 goto nfsmout; 2976 } 2977 if (nd->nd_flag & ND_NFSV4) { 2978 rderr = 0; 2979 nfsva.na_mntonfileno = 0xffffffff; 2980 error = nfsv4_loadattr(nd, NULL, &nfsva, NULL, 2981 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0, 2982 NULL, NULL, &rderr, p, cred); 2983 if (error) 2984 goto nfsmout; 2985 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2986 } else if (nd->nd_flag & ND_NFSV3) { 2987 NFSM_DISSECT(tl, u_int32_t *, 3*NFSX_UNSIGNED); 2988 ncookie.lval[0] = *tl++; 2989 ncookie.lval[1] = *tl++; 2990 } else { 2991 NFSM_DISSECT(tl, u_int32_t *, 2*NFSX_UNSIGNED); 2992 ncookie.lval[0] = 0; 2993 ncookie.lval[1] = *tl++; 2994 } 2995 if (bigenough) { 2996 if (nd->nd_flag & ND_NFSV4) { 2997 if (rderr) { 2998 dp->d_fileno = 0; 2999 } else { 3000 if (gotmnton) { 3001 if (nfsva.na_mntonfileno != 0xffffffff) 3002 dp->d_fileno = nfsva.na_mntonfileno; 3003 else 3004 dp->d_fileno = nfsva.na_fileid; 3005 } else if (nfsva.na_filesid[0] == 3006 dnp->n_vattr.na_filesid[0] && 3007 nfsva.na_filesid[1] == 3008 dnp->n_vattr.na_filesid[1]) { 3009 dp->d_fileno = nfsva.na_fileid; 3010 } else { 3011 do { 3012 fakefileno--; 3013 } while (fakefileno == 3014 nfsva.na_fileid); 3015 dp->d_fileno = fakefileno; 3016 } 3017 dp->d_type = vtonfs_dtype(nfsva.na_type); 3018 } 3019 } else { 3020 dp->d_fileno = nfsva.na_fileid; 3021 } 3022 *tl2++ = cookiep->nfsuquad[0] = cookie.lval[0] = 3023 ncookie.lval[0]; 3024 *tl2 = cookiep->nfsuquad[1] = cookie.lval[1] = 3025 ncookie.lval[1]; 3026 } 3027 more_dirs = fxdr_unsigned(int, *tl); 3028 } 3029 /* 3030 * If at end of rpc data, get the eof boolean 3031 */ 3032 if (!more_dirs) { 3033 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 3034 eof = fxdr_unsigned(int, *tl); 3035 if (tryformoredirs) 3036 more_dirs = !eof; 3037 if (nd->nd_flag & ND_NFSV4) { 3038 error = nfscl_postop_attr(nd, nap, attrflagp, 3039 stuff); 3040 if (error) 3041 goto nfsmout; 3042 } 3043 } 3044 mbuf_freem(nd->nd_mrep); 3045 nd->nd_mrep = NULL; 3046 } 3047 /* 3048 * Fill last record, iff any, out to a multiple of DIRBLKSIZ 3049 * by increasing d_reclen for the last record. 3050 */ 3051 if (blksiz > 0) { 3052 left = DIRBLKSIZ - blksiz; 3053 dp->d_reclen += left; 3054 uio_iov_base_add(uiop, left); 3055 uio_iov_len_add(uiop, -(left)); 3056 uio_uio_resid_add(uiop, -(left)); 3057 uiop->uio_offset += left; 3058 } 3059 3060 /* 3061 * If returning no data, assume end of file. 3062 * If not bigenough, return not end of file, since you aren't 3063 * returning all the data 3064 * Otherwise, return the eof flag from the server. 3065 */ 3066 if (eofp) { 3067 if (tresid == ((size_t)(uio_uio_resid(uiop)))) 3068 *eofp = 1; 3069 else if (!bigenough) 3070 *eofp = 0; 3071 else 3072 *eofp = eof; 3073 } 3074 3075 /* 3076 * Add extra empty records to any remaining DIRBLKSIZ chunks. 3077 */ 3078 while (uio_uio_resid(uiop) > 0 && ((size_t)(uio_uio_resid(uiop))) != tresid) { 3079 dp = (struct dirent *) CAST_DOWN(caddr_t, uio_iov_base(uiop)); 3080 dp->d_type = DT_UNKNOWN; 3081 dp->d_fileno = 0; 3082 dp->d_namlen = 0; 3083 dp->d_name[0] = '\0'; 3084 tl = (u_int32_t *)&dp->d_name[4]; 3085 *tl++ = cookie.lval[0]; 3086 *tl = cookie.lval[1]; 3087 dp->d_reclen = DIRBLKSIZ; 3088 uio_iov_base_add(uiop, DIRBLKSIZ); 3089 uio_iov_len_add(uiop, -(DIRBLKSIZ)); 3090 uio_uio_resid_add(uiop, -(DIRBLKSIZ)); 3091 uiop->uio_offset += DIRBLKSIZ; 3092 } 3093 3094 nfsmout: 3095 if (nd->nd_mrep != NULL) 3096 mbuf_freem(nd->nd_mrep); 3097 return (error); 3098 } 3099 3100 #ifndef APPLE 3101 /* 3102 * NFS V3 readdir plus RPC. Used in place of nfsrpc_readdir(). 3103 * (Also used for NFS V4 when mount flag set.) 3104 * (ditto above w.r.t. multiple of DIRBLKSIZ, etc.) 3105 */ 3106 APPLESTATIC int 3107 nfsrpc_readdirplus(vnode_t vp, struct uio *uiop, nfsuint64 *cookiep, 3108 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, 3109 int *eofp, void *stuff) 3110 { 3111 int len, left; 3112 struct dirent *dp = NULL; 3113 u_int32_t *tl; 3114 vnode_t newvp = NULLVP; 3115 struct nfsrv_descript nfsd, *nd = &nfsd; 3116 struct nameidata nami, *ndp = &nami; 3117 struct componentname *cnp = &ndp->ni_cnd; 3118 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 3119 struct nfsnode *dnp = VTONFS(vp), *np; 3120 struct nfsvattr nfsva; 3121 struct nfsfh *nfhp; 3122 nfsquad_t cookie, ncookie; 3123 int error = 0, tlen, more_dirs = 1, blksiz = 0, bigenough = 1; 3124 int attrflag, tryformoredirs = 1, eof = 0, gotmnton = 0; 3125 int isdotdot = 0, unlocknewvp = 0; 3126 long dotfileid, dotdotfileid = 0, fileno = 0; 3127 char *cp; 3128 nfsattrbit_t attrbits, dattrbits; 3129 size_t tresid; 3130 u_int32_t *tl2 = NULL, fakefileno = 0xffffffff, rderr; 3131 struct timespec dctime; 3132 3133 KASSERT(uiop->uio_iovcnt == 1 && 3134 (uio_uio_resid(uiop) & (DIRBLKSIZ - 1)) == 0, 3135 ("nfs readdirplusrpc bad uio")); 3136 timespecclear(&dctime); 3137 *attrflagp = 0; 3138 if (eofp != NULL) 3139 *eofp = 0; 3140 ndp->ni_dvp = vp; 3141 nd->nd_mrep = NULL; 3142 cookie.lval[0] = cookiep->nfsuquad[0]; 3143 cookie.lval[1] = cookiep->nfsuquad[1]; 3144 tresid = uio_uio_resid(uiop); 3145 3146 /* 3147 * For NFSv4, first create the "." and ".." entries. 3148 */ 3149 if (NFSHASNFSV4(nmp)) { 3150 NFSGETATTR_ATTRBIT(&dattrbits); 3151 NFSZERO_ATTRBIT(&attrbits); 3152 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_FILEID); 3153 if (NFSISSET_ATTRBIT(&dnp->n_vattr.na_suppattr, 3154 NFSATTRBIT_MOUNTEDONFILEID)) { 3155 NFSSETBIT_ATTRBIT(&attrbits, 3156 NFSATTRBIT_MOUNTEDONFILEID); 3157 gotmnton = 1; 3158 } else { 3159 /* 3160 * Must fake it. Use the fileno, except when the 3161 * fsid is != to that of the directory. For that 3162 * case, generate a fake fileno that is not the same. 3163 */ 3164 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_FSID); 3165 gotmnton = 0; 3166 } 3167 3168 /* 3169 * Joy, oh joy. For V4 we get to hand craft '.' and '..'. 3170 */ 3171 if (uiop->uio_offset == 0) { 3172 NFSCL_REQSTART(nd, NFSPROC_LOOKUPP, vp); 3173 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 3174 *tl++ = txdr_unsigned(NFSV4OP_GETFH); 3175 *tl = txdr_unsigned(NFSV4OP_GETATTR); 3176 (void) nfsrv_putattrbit(nd, &attrbits); 3177 error = nfscl_request(nd, vp, p, cred, stuff); 3178 if (error) 3179 return (error); 3180 dotfileid = 0; /* Fake out the compiler. */ 3181 if ((nd->nd_flag & ND_NOMOREDATA) == 0) { 3182 error = nfsm_loadattr(nd, &nfsva); 3183 if (error != 0) 3184 goto nfsmout; 3185 dctime = nfsva.na_ctime; 3186 dotfileid = nfsva.na_fileid; 3187 } 3188 if (nd->nd_repstat == 0) { 3189 NFSM_DISSECT(tl, u_int32_t *, 5 * NFSX_UNSIGNED); 3190 len = fxdr_unsigned(int, *(tl + 4)); 3191 if (len > 0 && len <= NFSX_V4FHMAX) 3192 error = nfsm_advance(nd, NFSM_RNDUP(len), -1); 3193 else 3194 error = EPERM; 3195 if (!error) { 3196 NFSM_DISSECT(tl, u_int32_t *, 2*NFSX_UNSIGNED); 3197 nfsva.na_mntonfileno = 0xffffffff; 3198 error = nfsv4_loadattr(nd, NULL, &nfsva, NULL, 3199 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0, 3200 NULL, NULL, NULL, p, cred); 3201 if (error) { 3202 dotdotfileid = dotfileid; 3203 } else if (gotmnton) { 3204 if (nfsva.na_mntonfileno != 0xffffffff) 3205 dotdotfileid = nfsva.na_mntonfileno; 3206 else 3207 dotdotfileid = nfsva.na_fileid; 3208 } else if (nfsva.na_filesid[0] == 3209 dnp->n_vattr.na_filesid[0] && 3210 nfsva.na_filesid[1] == 3211 dnp->n_vattr.na_filesid[1]) { 3212 dotdotfileid = nfsva.na_fileid; 3213 } else { 3214 do { 3215 fakefileno--; 3216 } while (fakefileno == 3217 nfsva.na_fileid); 3218 dotdotfileid = fakefileno; 3219 } 3220 } 3221 } else if (nd->nd_repstat == NFSERR_NOENT) { 3222 /* 3223 * Lookupp returns NFSERR_NOENT when we are 3224 * at the root, so just use the current dir. 3225 */ 3226 nd->nd_repstat = 0; 3227 dotdotfileid = dotfileid; 3228 } else { 3229 error = nd->nd_repstat; 3230 } 3231 mbuf_freem(nd->nd_mrep); 3232 if (error) 3233 return (error); 3234 nd->nd_mrep = NULL; 3235 dp = (struct dirent *)uio_iov_base(uiop); 3236 dp->d_type = DT_DIR; 3237 dp->d_fileno = dotfileid; 3238 dp->d_namlen = 1; 3239 dp->d_name[0] = '.'; 3240 dp->d_name[1] = '\0'; 3241 dp->d_reclen = DIRENT_SIZE(dp) + NFSX_HYPER; 3242 /* 3243 * Just make these offset cookie 0. 3244 */ 3245 tl = (u_int32_t *)&dp->d_name[4]; 3246 *tl++ = 0; 3247 *tl = 0; 3248 blksiz += dp->d_reclen; 3249 uio_uio_resid_add(uiop, -(dp->d_reclen)); 3250 uiop->uio_offset += dp->d_reclen; 3251 uio_iov_base_add(uiop, dp->d_reclen); 3252 uio_iov_len_add(uiop, -(dp->d_reclen)); 3253 dp = (struct dirent *)uio_iov_base(uiop); 3254 dp->d_type = DT_DIR; 3255 dp->d_fileno = dotdotfileid; 3256 dp->d_namlen = 2; 3257 dp->d_name[0] = '.'; 3258 dp->d_name[1] = '.'; 3259 dp->d_name[2] = '\0'; 3260 dp->d_reclen = DIRENT_SIZE(dp) + NFSX_HYPER; 3261 /* 3262 * Just make these offset cookie 0. 3263 */ 3264 tl = (u_int32_t *)&dp->d_name[4]; 3265 *tl++ = 0; 3266 *tl = 0; 3267 blksiz += dp->d_reclen; 3268 uio_uio_resid_add(uiop, -(dp->d_reclen)); 3269 uiop->uio_offset += dp->d_reclen; 3270 uio_iov_base_add(uiop, dp->d_reclen); 3271 uio_iov_len_add(uiop, -(dp->d_reclen)); 3272 } 3273 NFSREADDIRPLUS_ATTRBIT(&attrbits); 3274 if (gotmnton) 3275 NFSSETBIT_ATTRBIT(&attrbits, 3276 NFSATTRBIT_MOUNTEDONFILEID); 3277 } 3278 3279 /* 3280 * Loop around doing readdir rpc's of size nm_readdirsize. 3281 * The stopping criteria is EOF or buffer full. 3282 */ 3283 while (more_dirs && bigenough) { 3284 *attrflagp = 0; 3285 NFSCL_REQSTART(nd, NFSPROC_READDIRPLUS, vp); 3286 NFSM_BUILD(tl, u_int32_t *, 6 * NFSX_UNSIGNED); 3287 *tl++ = cookie.lval[0]; 3288 *tl++ = cookie.lval[1]; 3289 if (cookie.qval == 0) { 3290 *tl++ = 0; 3291 *tl++ = 0; 3292 } else { 3293 NFSLOCKNODE(dnp); 3294 *tl++ = dnp->n_cookieverf.nfsuquad[0]; 3295 *tl++ = dnp->n_cookieverf.nfsuquad[1]; 3296 NFSUNLOCKNODE(dnp); 3297 } 3298 *tl++ = txdr_unsigned(nmp->nm_readdirsize); 3299 *tl = txdr_unsigned(nmp->nm_readdirsize); 3300 if (nd->nd_flag & ND_NFSV4) { 3301 (void) nfsrv_putattrbit(nd, &attrbits); 3302 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 3303 *tl = txdr_unsigned(NFSV4OP_GETATTR); 3304 (void) nfsrv_putattrbit(nd, &dattrbits); 3305 } 3306 error = nfscl_request(nd, vp, p, cred, stuff); 3307 if (error) 3308 return (error); 3309 if (nd->nd_flag & ND_NFSV3) 3310 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 3311 if (nd->nd_repstat || error) { 3312 if (!error) 3313 error = nd->nd_repstat; 3314 goto nfsmout; 3315 } 3316 if ((nd->nd_flag & ND_NFSV3) != 0 && *attrflagp != 0) 3317 dctime = nap->na_ctime; 3318 NFSM_DISSECT(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 3319 NFSLOCKNODE(dnp); 3320 dnp->n_cookieverf.nfsuquad[0] = *tl++; 3321 dnp->n_cookieverf.nfsuquad[1] = *tl++; 3322 NFSUNLOCKNODE(dnp); 3323 more_dirs = fxdr_unsigned(int, *tl); 3324 if (!more_dirs) 3325 tryformoredirs = 0; 3326 3327 /* loop thru the dir entries, doctoring them to 4bsd form */ 3328 while (more_dirs && bigenough) { 3329 NFSM_DISSECT(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 3330 if (nd->nd_flag & ND_NFSV4) { 3331 ncookie.lval[0] = *tl++; 3332 ncookie.lval[1] = *tl++; 3333 } else { 3334 fileno = fxdr_unsigned(long, *++tl); 3335 tl++; 3336 } 3337 len = fxdr_unsigned(int, *tl); 3338 if (len <= 0 || len > NFS_MAXNAMLEN) { 3339 error = EBADRPC; 3340 goto nfsmout; 3341 } 3342 tlen = NFSM_RNDUP(len); 3343 if (tlen == len) 3344 tlen += 4; /* To ensure null termination */ 3345 left = DIRBLKSIZ - blksiz; 3346 if ((tlen + DIRHDSIZ + NFSX_HYPER) > left) { 3347 dp->d_reclen += left; 3348 uio_iov_base_add(uiop, left); 3349 uio_iov_len_add(uiop, -(left)); 3350 uio_uio_resid_add(uiop, -(left)); 3351 uiop->uio_offset += left; 3352 blksiz = 0; 3353 } 3354 if ((tlen + DIRHDSIZ + NFSX_HYPER) > uio_uio_resid(uiop)) 3355 bigenough = 0; 3356 if (bigenough) { 3357 dp = (struct dirent *)uio_iov_base(uiop); 3358 dp->d_namlen = len; 3359 dp->d_reclen = tlen + DIRHDSIZ + NFSX_HYPER; 3360 dp->d_type = DT_UNKNOWN; 3361 blksiz += dp->d_reclen; 3362 if (blksiz == DIRBLKSIZ) 3363 blksiz = 0; 3364 uio_uio_resid_add(uiop, -(DIRHDSIZ)); 3365 uiop->uio_offset += DIRHDSIZ; 3366 uio_iov_base_add(uiop, DIRHDSIZ); 3367 uio_iov_len_add(uiop, -(DIRHDSIZ)); 3368 cnp->cn_nameptr = uio_iov_base(uiop); 3369 cnp->cn_namelen = len; 3370 NFSCNHASHZERO(cnp); 3371 error = nfsm_mbufuio(nd, uiop, len); 3372 if (error) 3373 goto nfsmout; 3374 cp = uio_iov_base(uiop); 3375 tlen -= len; 3376 *cp = '\0'; 3377 cp += tlen; /* points to cookie storage */ 3378 tl2 = (u_int32_t *)cp; 3379 if (len == 2 && cnp->cn_nameptr[0] == '.' && 3380 cnp->cn_nameptr[1] == '.') 3381 isdotdot = 1; 3382 else 3383 isdotdot = 0; 3384 uio_iov_base_add(uiop, (tlen + NFSX_HYPER)); 3385 uio_iov_len_add(uiop, -(tlen + NFSX_HYPER)); 3386 uio_uio_resid_add(uiop, -(tlen + NFSX_HYPER)); 3387 uiop->uio_offset += (tlen + NFSX_HYPER); 3388 } else { 3389 error = nfsm_advance(nd, NFSM_RNDUP(len), -1); 3390 if (error) 3391 goto nfsmout; 3392 } 3393 nfhp = NULL; 3394 if (nd->nd_flag & ND_NFSV3) { 3395 NFSM_DISSECT(tl, u_int32_t *, 3*NFSX_UNSIGNED); 3396 ncookie.lval[0] = *tl++; 3397 ncookie.lval[1] = *tl++; 3398 attrflag = fxdr_unsigned(int, *tl); 3399 if (attrflag) { 3400 error = nfsm_loadattr(nd, &nfsva); 3401 if (error) 3402 goto nfsmout; 3403 } 3404 NFSM_DISSECT(tl,u_int32_t *,NFSX_UNSIGNED); 3405 if (*tl) { 3406 error = nfsm_getfh(nd, &nfhp); 3407 if (error) 3408 goto nfsmout; 3409 } 3410 if (!attrflag && nfhp != NULL) { 3411 FREE((caddr_t)nfhp, M_NFSFH); 3412 nfhp = NULL; 3413 } 3414 } else { 3415 rderr = 0; 3416 nfsva.na_mntonfileno = 0xffffffff; 3417 error = nfsv4_loadattr(nd, NULL, &nfsva, &nfhp, 3418 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0, 3419 NULL, NULL, &rderr, p, cred); 3420 if (error) 3421 goto nfsmout; 3422 } 3423 3424 if (bigenough) { 3425 if (nd->nd_flag & ND_NFSV4) { 3426 if (rderr) { 3427 dp->d_fileno = 0; 3428 } else if (gotmnton) { 3429 if (nfsva.na_mntonfileno != 0xffffffff) 3430 dp->d_fileno = nfsva.na_mntonfileno; 3431 else 3432 dp->d_fileno = nfsva.na_fileid; 3433 } else if (nfsva.na_filesid[0] == 3434 dnp->n_vattr.na_filesid[0] && 3435 nfsva.na_filesid[1] == 3436 dnp->n_vattr.na_filesid[1]) { 3437 dp->d_fileno = nfsva.na_fileid; 3438 } else { 3439 do { 3440 fakefileno--; 3441 } while (fakefileno == 3442 nfsva.na_fileid); 3443 dp->d_fileno = fakefileno; 3444 } 3445 } else { 3446 dp->d_fileno = fileno; 3447 } 3448 *tl2++ = cookiep->nfsuquad[0] = cookie.lval[0] = 3449 ncookie.lval[0]; 3450 *tl2 = cookiep->nfsuquad[1] = cookie.lval[1] = 3451 ncookie.lval[1]; 3452 3453 if (nfhp != NULL) { 3454 if (NFSRV_CMPFH(nfhp->nfh_fh, nfhp->nfh_len, 3455 dnp->n_fhp->nfh_fh, dnp->n_fhp->nfh_len)) { 3456 VREF(vp); 3457 newvp = vp; 3458 unlocknewvp = 0; 3459 FREE((caddr_t)nfhp, M_NFSFH); 3460 np = dnp; 3461 } else if (isdotdot != 0) { 3462 /* 3463 * Skip doing a nfscl_nget() call for "..". 3464 * There's a race between acquiring the nfs 3465 * node here and lookups that look for the 3466 * directory being read (in the parent). 3467 * It would try to get a lock on ".." here, 3468 * owning the lock on the directory being 3469 * read. Lookup will hold the lock on ".." 3470 * and try to acquire the lock on the 3471 * directory being read. 3472 * If the directory is unlocked/relocked, 3473 * then there is a LOR with the buflock 3474 * vp is relocked. 3475 */ 3476 free(nfhp, M_NFSFH); 3477 } else { 3478 error = nfscl_nget(vnode_mount(vp), vp, 3479 nfhp, cnp, p, &np, NULL, LK_EXCLUSIVE); 3480 if (!error) { 3481 newvp = NFSTOV(np); 3482 unlocknewvp = 1; 3483 } 3484 } 3485 nfhp = NULL; 3486 if (newvp != NULLVP) { 3487 error = nfscl_loadattrcache(&newvp, 3488 &nfsva, NULL, NULL, 0, 0); 3489 if (error) { 3490 if (unlocknewvp) 3491 vput(newvp); 3492 else 3493 vrele(newvp); 3494 goto nfsmout; 3495 } 3496 dp->d_type = 3497 vtonfs_dtype(np->n_vattr.na_type); 3498 ndp->ni_vp = newvp; 3499 NFSCNHASH(cnp, HASHINIT); 3500 if (cnp->cn_namelen <= NCHNAMLEN && 3501 (newvp->v_type != VDIR || 3502 dctime.tv_sec != 0)) { 3503 cache_enter_time(ndp->ni_dvp, 3504 ndp->ni_vp, cnp, 3505 &nfsva.na_ctime, 3506 newvp->v_type != VDIR ? NULL : 3507 &dctime); 3508 } 3509 if (unlocknewvp) 3510 vput(newvp); 3511 else 3512 vrele(newvp); 3513 newvp = NULLVP; 3514 } 3515 } 3516 } else if (nfhp != NULL) { 3517 FREE((caddr_t)nfhp, M_NFSFH); 3518 } 3519 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 3520 more_dirs = fxdr_unsigned(int, *tl); 3521 } 3522 /* 3523 * If at end of rpc data, get the eof boolean 3524 */ 3525 if (!more_dirs) { 3526 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 3527 eof = fxdr_unsigned(int, *tl); 3528 if (tryformoredirs) 3529 more_dirs = !eof; 3530 if (nd->nd_flag & ND_NFSV4) { 3531 error = nfscl_postop_attr(nd, nap, attrflagp, 3532 stuff); 3533 if (error) 3534 goto nfsmout; 3535 } 3536 } 3537 mbuf_freem(nd->nd_mrep); 3538 nd->nd_mrep = NULL; 3539 } 3540 /* 3541 * Fill last record, iff any, out to a multiple of DIRBLKSIZ 3542 * by increasing d_reclen for the last record. 3543 */ 3544 if (blksiz > 0) { 3545 left = DIRBLKSIZ - blksiz; 3546 dp->d_reclen += left; 3547 uio_iov_base_add(uiop, left); 3548 uio_iov_len_add(uiop, -(left)); 3549 uio_uio_resid_add(uiop, -(left)); 3550 uiop->uio_offset += left; 3551 } 3552 3553 /* 3554 * If returning no data, assume end of file. 3555 * If not bigenough, return not end of file, since you aren't 3556 * returning all the data 3557 * Otherwise, return the eof flag from the server. 3558 */ 3559 if (eofp != NULL) { 3560 if (tresid == uio_uio_resid(uiop)) 3561 *eofp = 1; 3562 else if (!bigenough) 3563 *eofp = 0; 3564 else 3565 *eofp = eof; 3566 } 3567 3568 /* 3569 * Add extra empty records to any remaining DIRBLKSIZ chunks. 3570 */ 3571 while (uio_uio_resid(uiop) > 0 && uio_uio_resid(uiop) != tresid) { 3572 dp = (struct dirent *)uio_iov_base(uiop); 3573 dp->d_type = DT_UNKNOWN; 3574 dp->d_fileno = 0; 3575 dp->d_namlen = 0; 3576 dp->d_name[0] = '\0'; 3577 tl = (u_int32_t *)&dp->d_name[4]; 3578 *tl++ = cookie.lval[0]; 3579 *tl = cookie.lval[1]; 3580 dp->d_reclen = DIRBLKSIZ; 3581 uio_iov_base_add(uiop, DIRBLKSIZ); 3582 uio_iov_len_add(uiop, -(DIRBLKSIZ)); 3583 uio_uio_resid_add(uiop, -(DIRBLKSIZ)); 3584 uiop->uio_offset += DIRBLKSIZ; 3585 } 3586 3587 nfsmout: 3588 if (nd->nd_mrep != NULL) 3589 mbuf_freem(nd->nd_mrep); 3590 return (error); 3591 } 3592 #endif /* !APPLE */ 3593 3594 /* 3595 * Nfs commit rpc 3596 */ 3597 APPLESTATIC int 3598 nfsrpc_commit(vnode_t vp, u_quad_t offset, int cnt, struct ucred *cred, 3599 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff) 3600 { 3601 u_int32_t *tl; 3602 struct nfsrv_descript nfsd, *nd = &nfsd; 3603 nfsattrbit_t attrbits; 3604 int error; 3605 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 3606 3607 *attrflagp = 0; 3608 NFSCL_REQSTART(nd, NFSPROC_COMMIT, vp); 3609 NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 3610 txdr_hyper(offset, tl); 3611 tl += 2; 3612 *tl = txdr_unsigned(cnt); 3613 if (nd->nd_flag & ND_NFSV4) { 3614 /* 3615 * And do a Getattr op. 3616 */ 3617 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 3618 *tl = txdr_unsigned(NFSV4OP_GETATTR); 3619 NFSGETATTR_ATTRBIT(&attrbits); 3620 (void) nfsrv_putattrbit(nd, &attrbits); 3621 } 3622 error = nfscl_request(nd, vp, p, cred, stuff); 3623 if (error) 3624 return (error); 3625 error = nfscl_wcc_data(nd, vp, nap, attrflagp, NULL, stuff); 3626 if (!error && !nd->nd_repstat) { 3627 NFSM_DISSECT(tl, u_int32_t *, NFSX_VERF); 3628 NFSLOCKMNT(nmp); 3629 if (NFSBCMP(nmp->nm_verf, tl, NFSX_VERF)) { 3630 NFSBCOPY(tl, nmp->nm_verf, NFSX_VERF); 3631 nd->nd_repstat = NFSERR_STALEWRITEVERF; 3632 } 3633 NFSUNLOCKMNT(nmp); 3634 if (nd->nd_flag & ND_NFSV4) 3635 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 3636 } 3637 nfsmout: 3638 if (!error && nd->nd_repstat) 3639 error = nd->nd_repstat; 3640 mbuf_freem(nd->nd_mrep); 3641 return (error); 3642 } 3643 3644 /* 3645 * NFS byte range lock rpc. 3646 * (Mostly just calls one of the three lower level RPC routines.) 3647 */ 3648 APPLESTATIC int 3649 nfsrpc_advlock(vnode_t vp, off_t size, int op, struct flock *fl, 3650 int reclaim, struct ucred *cred, NFSPROC_T *p, void *id, int flags) 3651 { 3652 struct nfscllockowner *lp; 3653 struct nfsclclient *clp; 3654 struct nfsfh *nfhp; 3655 struct nfsrv_descript nfsd, *nd = &nfsd; 3656 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 3657 u_int64_t off, len; 3658 off_t start, end; 3659 u_int32_t clidrev = 0; 3660 int error = 0, newone = 0, expireret = 0, retrycnt, donelocally; 3661 int callcnt, dorpc; 3662 3663 /* 3664 * Convert the flock structure into a start and end and do POSIX 3665 * bounds checking. 3666 */ 3667 switch (fl->l_whence) { 3668 case SEEK_SET: 3669 case SEEK_CUR: 3670 /* 3671 * Caller is responsible for adding any necessary offset 3672 * when SEEK_CUR is used. 3673 */ 3674 start = fl->l_start; 3675 off = fl->l_start; 3676 break; 3677 case SEEK_END: 3678 start = size + fl->l_start; 3679 off = size + fl->l_start; 3680 break; 3681 default: 3682 return (EINVAL); 3683 }; 3684 if (start < 0) 3685 return (EINVAL); 3686 if (fl->l_len != 0) { 3687 end = start + fl->l_len - 1; 3688 if (end < start) 3689 return (EINVAL); 3690 } 3691 3692 len = fl->l_len; 3693 if (len == 0) 3694 len = NFS64BITSSET; 3695 retrycnt = 0; 3696 do { 3697 nd->nd_repstat = 0; 3698 if (op == F_GETLK) { 3699 error = nfscl_getcl(vnode_mount(vp), cred, p, 1, &clp); 3700 if (error) 3701 return (error); 3702 error = nfscl_lockt(vp, clp, off, len, fl, p, id, flags); 3703 if (!error) { 3704 clidrev = clp->nfsc_clientidrev; 3705 error = nfsrpc_lockt(nd, vp, clp, off, len, fl, cred, 3706 p, id, flags); 3707 } else if (error == -1) { 3708 error = 0; 3709 } 3710 nfscl_clientrelease(clp); 3711 } else if (op == F_UNLCK && fl->l_type == F_UNLCK) { 3712 /* 3713 * We must loop around for all lockowner cases. 3714 */ 3715 callcnt = 0; 3716 error = nfscl_getcl(vnode_mount(vp), cred, p, 1, &clp); 3717 if (error) 3718 return (error); 3719 do { 3720 error = nfscl_relbytelock(vp, off, len, cred, p, callcnt, 3721 clp, id, flags, &lp, &dorpc); 3722 /* 3723 * If it returns a NULL lp, we're done. 3724 */ 3725 if (lp == NULL) { 3726 if (callcnt == 0) 3727 nfscl_clientrelease(clp); 3728 else 3729 nfscl_releasealllocks(clp, vp, p, id, flags); 3730 return (error); 3731 } 3732 if (nmp->nm_clp != NULL) 3733 clidrev = nmp->nm_clp->nfsc_clientidrev; 3734 else 3735 clidrev = 0; 3736 /* 3737 * If the server doesn't support Posix lock semantics, 3738 * only allow locks on the entire file, since it won't 3739 * handle overlapping byte ranges. 3740 * There might still be a problem when a lock 3741 * upgrade/downgrade (read<->write) occurs, since the 3742 * server "might" expect an unlock first? 3743 */ 3744 if (dorpc && (lp->nfsl_open->nfso_posixlock || 3745 (off == 0 && len == NFS64BITSSET))) { 3746 /* 3747 * Since the lock records will go away, we must 3748 * wait for grace and delay here. 3749 */ 3750 do { 3751 error = nfsrpc_locku(nd, nmp, lp, off, len, 3752 NFSV4LOCKT_READ, cred, p, 0); 3753 if ((nd->nd_repstat == NFSERR_GRACE || 3754 nd->nd_repstat == NFSERR_DELAY) && 3755 error == 0) 3756 (void) nfs_catnap(PZERO, (int)nd->nd_repstat, 3757 "nfs_advlock"); 3758 } while ((nd->nd_repstat == NFSERR_GRACE || 3759 nd->nd_repstat == NFSERR_DELAY) && error == 0); 3760 } 3761 callcnt++; 3762 } while (error == 0 && nd->nd_repstat == 0); 3763 nfscl_releasealllocks(clp, vp, p, id, flags); 3764 } else if (op == F_SETLK) { 3765 error = nfscl_getbytelock(vp, off, len, fl->l_type, cred, p, 3766 NULL, 0, id, flags, NULL, NULL, &lp, &newone, &donelocally); 3767 if (error || donelocally) { 3768 return (error); 3769 } 3770 if (nmp->nm_clp != NULL) 3771 clidrev = nmp->nm_clp->nfsc_clientidrev; 3772 else 3773 clidrev = 0; 3774 nfhp = VTONFS(vp)->n_fhp; 3775 if (!lp->nfsl_open->nfso_posixlock && 3776 (off != 0 || len != NFS64BITSSET)) { 3777 error = EINVAL; 3778 } else { 3779 error = nfsrpc_lock(nd, nmp, vp, nfhp->nfh_fh, 3780 nfhp->nfh_len, lp, newone, reclaim, off, 3781 len, fl->l_type, cred, p, 0); 3782 } 3783 if (!error) 3784 error = nd->nd_repstat; 3785 nfscl_lockrelease(lp, error, newone); 3786 } else { 3787 error = EINVAL; 3788 } 3789 if (!error) 3790 error = nd->nd_repstat; 3791 if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 3792 error == NFSERR_STALEDONTRECOVER || 3793 error == NFSERR_STALECLIENTID || error == NFSERR_DELAY || 3794 error == NFSERR_BADSESSION) { 3795 (void) nfs_catnap(PZERO, error, "nfs_advlock"); 3796 } else if ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) 3797 && clidrev != 0) { 3798 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p); 3799 retrycnt++; 3800 } 3801 } while (error == NFSERR_GRACE || 3802 error == NFSERR_STALECLIENTID || error == NFSERR_DELAY || 3803 error == NFSERR_STALEDONTRECOVER || error == NFSERR_STALESTATEID || 3804 error == NFSERR_BADSESSION || 3805 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) && 3806 expireret == 0 && clidrev != 0 && retrycnt < 4)); 3807 if (error && retrycnt >= 4) 3808 error = EIO; 3809 return (error); 3810 } 3811 3812 /* 3813 * The lower level routine for the LockT case. 3814 */ 3815 APPLESTATIC int 3816 nfsrpc_lockt(struct nfsrv_descript *nd, vnode_t vp, 3817 struct nfsclclient *clp, u_int64_t off, u_int64_t len, struct flock *fl, 3818 struct ucred *cred, NFSPROC_T *p, void *id, int flags) 3819 { 3820 u_int32_t *tl; 3821 int error, type, size; 3822 uint8_t own[NFSV4CL_LOCKNAMELEN + NFSX_V4FHMAX]; 3823 struct nfsnode *np; 3824 struct nfsmount *nmp; 3825 3826 nmp = VFSTONFS(vp->v_mount); 3827 NFSCL_REQSTART(nd, NFSPROC_LOCKT, vp); 3828 NFSM_BUILD(tl, u_int32_t *, 7 * NFSX_UNSIGNED); 3829 if (fl->l_type == F_RDLCK) 3830 *tl++ = txdr_unsigned(NFSV4LOCKT_READ); 3831 else 3832 *tl++ = txdr_unsigned(NFSV4LOCKT_WRITE); 3833 txdr_hyper(off, tl); 3834 tl += 2; 3835 txdr_hyper(len, tl); 3836 tl += 2; 3837 *tl++ = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[0]; 3838 *tl = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[1]; 3839 nfscl_filllockowner(id, own, flags); 3840 np = VTONFS(vp); 3841 NFSBCOPY(np->n_fhp->nfh_fh, &own[NFSV4CL_LOCKNAMELEN], 3842 np->n_fhp->nfh_len); 3843 (void)nfsm_strtom(nd, own, NFSV4CL_LOCKNAMELEN + np->n_fhp->nfh_len); 3844 error = nfscl_request(nd, vp, p, cred, NULL); 3845 if (error) 3846 return (error); 3847 if (nd->nd_repstat == 0) { 3848 fl->l_type = F_UNLCK; 3849 } else if (nd->nd_repstat == NFSERR_DENIED) { 3850 nd->nd_repstat = 0; 3851 fl->l_whence = SEEK_SET; 3852 NFSM_DISSECT(tl, u_int32_t *, 8 * NFSX_UNSIGNED); 3853 fl->l_start = fxdr_hyper(tl); 3854 tl += 2; 3855 len = fxdr_hyper(tl); 3856 tl += 2; 3857 if (len == NFS64BITSSET) 3858 fl->l_len = 0; 3859 else 3860 fl->l_len = len; 3861 type = fxdr_unsigned(int, *tl++); 3862 if (type == NFSV4LOCKT_WRITE) 3863 fl->l_type = F_WRLCK; 3864 else 3865 fl->l_type = F_RDLCK; 3866 /* 3867 * XXX For now, I have no idea what to do with the 3868 * conflicting lock_owner, so I'll just set the pid == 0 3869 * and skip over the lock_owner. 3870 */ 3871 fl->l_pid = (pid_t)0; 3872 tl += 2; 3873 size = fxdr_unsigned(int, *tl); 3874 if (size < 0 || size > NFSV4_OPAQUELIMIT) 3875 error = EBADRPC; 3876 if (!error) 3877 error = nfsm_advance(nd, NFSM_RNDUP(size), -1); 3878 } else if (nd->nd_repstat == NFSERR_STALECLIENTID || 3879 nd->nd_repstat == NFSERR_BADSESSION) 3880 nfscl_initiate_recovery(clp); 3881 nfsmout: 3882 mbuf_freem(nd->nd_mrep); 3883 return (error); 3884 } 3885 3886 /* 3887 * Lower level function that performs the LockU RPC. 3888 */ 3889 static int 3890 nfsrpc_locku(struct nfsrv_descript *nd, struct nfsmount *nmp, 3891 struct nfscllockowner *lp, u_int64_t off, u_int64_t len, 3892 u_int32_t type, struct ucred *cred, NFSPROC_T *p, int syscred) 3893 { 3894 u_int32_t *tl; 3895 int error; 3896 3897 nfscl_reqstart(nd, NFSPROC_LOCKU, nmp, lp->nfsl_open->nfso_fh, 3898 lp->nfsl_open->nfso_fhlen, NULL, NULL); 3899 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID + 6 * NFSX_UNSIGNED); 3900 *tl++ = txdr_unsigned(type); 3901 *tl = txdr_unsigned(lp->nfsl_seqid); 3902 if (nfstest_outofseq && 3903 (arc4random() % nfstest_outofseq) == 0) 3904 *tl = txdr_unsigned(lp->nfsl_seqid + 1); 3905 tl++; 3906 if (NFSHASNFSV4N(nmp)) 3907 *tl++ = 0; 3908 else 3909 *tl++ = lp->nfsl_stateid.seqid; 3910 *tl++ = lp->nfsl_stateid.other[0]; 3911 *tl++ = lp->nfsl_stateid.other[1]; 3912 *tl++ = lp->nfsl_stateid.other[2]; 3913 txdr_hyper(off, tl); 3914 tl += 2; 3915 txdr_hyper(len, tl); 3916 if (syscred) 3917 nd->nd_flag |= ND_USEGSSNAME; 3918 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 3919 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 3920 NFSCL_INCRSEQID(lp->nfsl_seqid, nd); 3921 if (error) 3922 return (error); 3923 if (nd->nd_repstat == 0) { 3924 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID); 3925 lp->nfsl_stateid.seqid = *tl++; 3926 lp->nfsl_stateid.other[0] = *tl++; 3927 lp->nfsl_stateid.other[1] = *tl++; 3928 lp->nfsl_stateid.other[2] = *tl; 3929 } else if (nd->nd_repstat == NFSERR_STALESTATEID || 3930 nd->nd_repstat == NFSERR_BADSESSION) 3931 nfscl_initiate_recovery(lp->nfsl_open->nfso_own->nfsow_clp); 3932 nfsmout: 3933 mbuf_freem(nd->nd_mrep); 3934 return (error); 3935 } 3936 3937 /* 3938 * The actual Lock RPC. 3939 */ 3940 APPLESTATIC int 3941 nfsrpc_lock(struct nfsrv_descript *nd, struct nfsmount *nmp, vnode_t vp, 3942 u_int8_t *nfhp, int fhlen, struct nfscllockowner *lp, int newone, 3943 int reclaim, u_int64_t off, u_int64_t len, short type, struct ucred *cred, 3944 NFSPROC_T *p, int syscred) 3945 { 3946 u_int32_t *tl; 3947 int error, size; 3948 uint8_t own[NFSV4CL_LOCKNAMELEN + NFSX_V4FHMAX]; 3949 3950 nfscl_reqstart(nd, NFSPROC_LOCK, nmp, nfhp, fhlen, NULL, NULL); 3951 NFSM_BUILD(tl, u_int32_t *, 7 * NFSX_UNSIGNED); 3952 if (type == F_RDLCK) 3953 *tl++ = txdr_unsigned(NFSV4LOCKT_READ); 3954 else 3955 *tl++ = txdr_unsigned(NFSV4LOCKT_WRITE); 3956 *tl++ = txdr_unsigned(reclaim); 3957 txdr_hyper(off, tl); 3958 tl += 2; 3959 txdr_hyper(len, tl); 3960 tl += 2; 3961 if (newone) { 3962 *tl = newnfs_true; 3963 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID + 3964 2 * NFSX_UNSIGNED + NFSX_HYPER); 3965 *tl++ = txdr_unsigned(lp->nfsl_open->nfso_own->nfsow_seqid); 3966 if (NFSHASNFSV4N(nmp)) 3967 *tl++ = 0; 3968 else 3969 *tl++ = lp->nfsl_open->nfso_stateid.seqid; 3970 *tl++ = lp->nfsl_open->nfso_stateid.other[0]; 3971 *tl++ = lp->nfsl_open->nfso_stateid.other[1]; 3972 *tl++ = lp->nfsl_open->nfso_stateid.other[2]; 3973 *tl++ = txdr_unsigned(lp->nfsl_seqid); 3974 *tl++ = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[0]; 3975 *tl = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[1]; 3976 NFSBCOPY(lp->nfsl_owner, own, NFSV4CL_LOCKNAMELEN); 3977 NFSBCOPY(nfhp, &own[NFSV4CL_LOCKNAMELEN], fhlen); 3978 (void)nfsm_strtom(nd, own, NFSV4CL_LOCKNAMELEN + fhlen); 3979 } else { 3980 *tl = newnfs_false; 3981 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID + NFSX_UNSIGNED); 3982 if (NFSHASNFSV4N(nmp)) 3983 *tl++ = 0; 3984 else 3985 *tl++ = lp->nfsl_stateid.seqid; 3986 *tl++ = lp->nfsl_stateid.other[0]; 3987 *tl++ = lp->nfsl_stateid.other[1]; 3988 *tl++ = lp->nfsl_stateid.other[2]; 3989 *tl = txdr_unsigned(lp->nfsl_seqid); 3990 if (nfstest_outofseq && 3991 (arc4random() % nfstest_outofseq) == 0) 3992 *tl = txdr_unsigned(lp->nfsl_seqid + 1); 3993 } 3994 if (syscred) 3995 nd->nd_flag |= ND_USEGSSNAME; 3996 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, vp, p, cred, 3997 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 3998 if (error) 3999 return (error); 4000 if (newone) 4001 NFSCL_INCRSEQID(lp->nfsl_open->nfso_own->nfsow_seqid, nd); 4002 NFSCL_INCRSEQID(lp->nfsl_seqid, nd); 4003 if (nd->nd_repstat == 0) { 4004 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID); 4005 lp->nfsl_stateid.seqid = *tl++; 4006 lp->nfsl_stateid.other[0] = *tl++; 4007 lp->nfsl_stateid.other[1] = *tl++; 4008 lp->nfsl_stateid.other[2] = *tl; 4009 } else if (nd->nd_repstat == NFSERR_DENIED) { 4010 NFSM_DISSECT(tl, u_int32_t *, 8 * NFSX_UNSIGNED); 4011 size = fxdr_unsigned(int, *(tl + 7)); 4012 if (size < 0 || size > NFSV4_OPAQUELIMIT) 4013 error = EBADRPC; 4014 if (!error) 4015 error = nfsm_advance(nd, NFSM_RNDUP(size), -1); 4016 } else if (nd->nd_repstat == NFSERR_STALESTATEID || 4017 nd->nd_repstat == NFSERR_BADSESSION) 4018 nfscl_initiate_recovery(lp->nfsl_open->nfso_own->nfsow_clp); 4019 nfsmout: 4020 mbuf_freem(nd->nd_mrep); 4021 return (error); 4022 } 4023 4024 /* 4025 * nfs statfs rpc 4026 * (always called with the vp for the mount point) 4027 */ 4028 APPLESTATIC int 4029 nfsrpc_statfs(vnode_t vp, struct nfsstatfs *sbp, struct nfsfsinfo *fsp, 4030 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, 4031 void *stuff) 4032 { 4033 u_int32_t *tl = NULL; 4034 struct nfsrv_descript nfsd, *nd = &nfsd; 4035 struct nfsmount *nmp; 4036 nfsattrbit_t attrbits; 4037 int error; 4038 4039 *attrflagp = 0; 4040 nmp = VFSTONFS(vnode_mount(vp)); 4041 if (NFSHASNFSV4(nmp)) { 4042 /* 4043 * For V4, you actually do a getattr. 4044 */ 4045 NFSCL_REQSTART(nd, NFSPROC_GETATTR, vp); 4046 NFSSTATFS_GETATTRBIT(&attrbits); 4047 (void) nfsrv_putattrbit(nd, &attrbits); 4048 nd->nd_flag |= ND_USEGSSNAME; 4049 error = nfscl_request(nd, vp, p, cred, stuff); 4050 if (error) 4051 return (error); 4052 if (nd->nd_repstat == 0) { 4053 error = nfsv4_loadattr(nd, NULL, nap, NULL, NULL, 0, 4054 NULL, NULL, sbp, fsp, NULL, 0, NULL, NULL, NULL, p, 4055 cred); 4056 if (!error) { 4057 nmp->nm_fsid[0] = nap->na_filesid[0]; 4058 nmp->nm_fsid[1] = nap->na_filesid[1]; 4059 NFSSETHASSETFSID(nmp); 4060 *attrflagp = 1; 4061 } 4062 } else { 4063 error = nd->nd_repstat; 4064 } 4065 if (error) 4066 goto nfsmout; 4067 } else { 4068 NFSCL_REQSTART(nd, NFSPROC_FSSTAT, vp); 4069 error = nfscl_request(nd, vp, p, cred, stuff); 4070 if (error) 4071 return (error); 4072 if (nd->nd_flag & ND_NFSV3) { 4073 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 4074 if (error) 4075 goto nfsmout; 4076 } 4077 if (nd->nd_repstat) { 4078 error = nd->nd_repstat; 4079 goto nfsmout; 4080 } 4081 NFSM_DISSECT(tl, u_int32_t *, 4082 NFSX_STATFS(nd->nd_flag & ND_NFSV3)); 4083 } 4084 if (NFSHASNFSV3(nmp)) { 4085 sbp->sf_tbytes = fxdr_hyper(tl); tl += 2; 4086 sbp->sf_fbytes = fxdr_hyper(tl); tl += 2; 4087 sbp->sf_abytes = fxdr_hyper(tl); tl += 2; 4088 sbp->sf_tfiles = fxdr_hyper(tl); tl += 2; 4089 sbp->sf_ffiles = fxdr_hyper(tl); tl += 2; 4090 sbp->sf_afiles = fxdr_hyper(tl); tl += 2; 4091 sbp->sf_invarsec = fxdr_unsigned(u_int32_t, *tl); 4092 } else if (NFSHASNFSV4(nmp) == 0) { 4093 sbp->sf_tsize = fxdr_unsigned(u_int32_t, *tl++); 4094 sbp->sf_bsize = fxdr_unsigned(u_int32_t, *tl++); 4095 sbp->sf_blocks = fxdr_unsigned(u_int32_t, *tl++); 4096 sbp->sf_bfree = fxdr_unsigned(u_int32_t, *tl++); 4097 sbp->sf_bavail = fxdr_unsigned(u_int32_t, *tl); 4098 } 4099 nfsmout: 4100 mbuf_freem(nd->nd_mrep); 4101 return (error); 4102 } 4103 4104 /* 4105 * nfs pathconf rpc 4106 */ 4107 APPLESTATIC int 4108 nfsrpc_pathconf(vnode_t vp, struct nfsv3_pathconf *pc, 4109 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, 4110 void *stuff) 4111 { 4112 struct nfsrv_descript nfsd, *nd = &nfsd; 4113 struct nfsmount *nmp; 4114 u_int32_t *tl; 4115 nfsattrbit_t attrbits; 4116 int error; 4117 4118 *attrflagp = 0; 4119 nmp = VFSTONFS(vnode_mount(vp)); 4120 if (NFSHASNFSV4(nmp)) { 4121 /* 4122 * For V4, you actually do a getattr. 4123 */ 4124 NFSCL_REQSTART(nd, NFSPROC_GETATTR, vp); 4125 NFSPATHCONF_GETATTRBIT(&attrbits); 4126 (void) nfsrv_putattrbit(nd, &attrbits); 4127 nd->nd_flag |= ND_USEGSSNAME; 4128 error = nfscl_request(nd, vp, p, cred, stuff); 4129 if (error) 4130 return (error); 4131 if (nd->nd_repstat == 0) { 4132 error = nfsv4_loadattr(nd, NULL, nap, NULL, NULL, 0, 4133 pc, NULL, NULL, NULL, NULL, 0, NULL, NULL, NULL, p, 4134 cred); 4135 if (!error) 4136 *attrflagp = 1; 4137 } else { 4138 error = nd->nd_repstat; 4139 } 4140 } else { 4141 NFSCL_REQSTART(nd, NFSPROC_PATHCONF, vp); 4142 error = nfscl_request(nd, vp, p, cred, stuff); 4143 if (error) 4144 return (error); 4145 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 4146 if (nd->nd_repstat && !error) 4147 error = nd->nd_repstat; 4148 if (!error) { 4149 NFSM_DISSECT(tl, u_int32_t *, NFSX_V3PATHCONF); 4150 pc->pc_linkmax = fxdr_unsigned(u_int32_t, *tl++); 4151 pc->pc_namemax = fxdr_unsigned(u_int32_t, *tl++); 4152 pc->pc_notrunc = fxdr_unsigned(u_int32_t, *tl++); 4153 pc->pc_chownrestricted = 4154 fxdr_unsigned(u_int32_t, *tl++); 4155 pc->pc_caseinsensitive = 4156 fxdr_unsigned(u_int32_t, *tl++); 4157 pc->pc_casepreserving = fxdr_unsigned(u_int32_t, *tl); 4158 } 4159 } 4160 nfsmout: 4161 mbuf_freem(nd->nd_mrep); 4162 return (error); 4163 } 4164 4165 /* 4166 * nfs version 3 fsinfo rpc call 4167 */ 4168 APPLESTATIC int 4169 nfsrpc_fsinfo(vnode_t vp, struct nfsfsinfo *fsp, struct ucred *cred, 4170 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff) 4171 { 4172 u_int32_t *tl; 4173 struct nfsrv_descript nfsd, *nd = &nfsd; 4174 int error; 4175 4176 *attrflagp = 0; 4177 NFSCL_REQSTART(nd, NFSPROC_FSINFO, vp); 4178 error = nfscl_request(nd, vp, p, cred, stuff); 4179 if (error) 4180 return (error); 4181 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 4182 if (nd->nd_repstat && !error) 4183 error = nd->nd_repstat; 4184 if (!error) { 4185 NFSM_DISSECT(tl, u_int32_t *, NFSX_V3FSINFO); 4186 fsp->fs_rtmax = fxdr_unsigned(u_int32_t, *tl++); 4187 fsp->fs_rtpref = fxdr_unsigned(u_int32_t, *tl++); 4188 fsp->fs_rtmult = fxdr_unsigned(u_int32_t, *tl++); 4189 fsp->fs_wtmax = fxdr_unsigned(u_int32_t, *tl++); 4190 fsp->fs_wtpref = fxdr_unsigned(u_int32_t, *tl++); 4191 fsp->fs_wtmult = fxdr_unsigned(u_int32_t, *tl++); 4192 fsp->fs_dtpref = fxdr_unsigned(u_int32_t, *tl++); 4193 fsp->fs_maxfilesize = fxdr_hyper(tl); 4194 tl += 2; 4195 fxdr_nfsv3time(tl, &fsp->fs_timedelta); 4196 tl += 2; 4197 fsp->fs_properties = fxdr_unsigned(u_int32_t, *tl); 4198 } 4199 nfsmout: 4200 mbuf_freem(nd->nd_mrep); 4201 return (error); 4202 } 4203 4204 /* 4205 * This function performs the Renew RPC. 4206 */ 4207 APPLESTATIC int 4208 nfsrpc_renew(struct nfsclclient *clp, struct nfsclds *dsp, struct ucred *cred, 4209 NFSPROC_T *p) 4210 { 4211 u_int32_t *tl; 4212 struct nfsrv_descript nfsd; 4213 struct nfsrv_descript *nd = &nfsd; 4214 struct nfsmount *nmp; 4215 int error; 4216 struct nfssockreq *nrp; 4217 4218 nmp = clp->nfsc_nmp; 4219 if (nmp == NULL) 4220 return (0); 4221 nfscl_reqstart(nd, NFSPROC_RENEW, nmp, NULL, 0, NULL, 4222 &dsp->nfsclds_sess); 4223 if (!NFSHASNFSV4N(nmp)) { 4224 /* NFSv4.1 just uses a Sequence Op and not a Renew. */ 4225 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 4226 *tl++ = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[0]; 4227 *tl = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[1]; 4228 } 4229 nrp = dsp->nfsclds_sockp; 4230 if (nrp == NULL) 4231 /* If NULL, use the MDS socket. */ 4232 nrp = &nmp->nm_sockreq; 4233 nd->nd_flag |= ND_USEGSSNAME; 4234 error = newnfs_request(nd, nmp, NULL, nrp, NULL, p, cred, 4235 NFS_PROG, NFS_VER4, NULL, 1, NULL, &dsp->nfsclds_sess); 4236 if (error) 4237 return (error); 4238 error = nd->nd_repstat; 4239 mbuf_freem(nd->nd_mrep); 4240 return (error); 4241 } 4242 4243 /* 4244 * This function performs the Releaselockowner RPC. 4245 */ 4246 APPLESTATIC int 4247 nfsrpc_rellockown(struct nfsmount *nmp, struct nfscllockowner *lp, 4248 uint8_t *fh, int fhlen, struct ucred *cred, NFSPROC_T *p) 4249 { 4250 struct nfsrv_descript nfsd, *nd = &nfsd; 4251 u_int32_t *tl; 4252 int error; 4253 uint8_t own[NFSV4CL_LOCKNAMELEN + NFSX_V4FHMAX]; 4254 4255 if (NFSHASNFSV4N(nmp)) { 4256 /* For NFSv4.1, do a FreeStateID. */ 4257 nfscl_reqstart(nd, NFSPROC_FREESTATEID, nmp, NULL, 0, NULL, 4258 NULL); 4259 nfsm_stateidtom(nd, &lp->nfsl_stateid, NFSSTATEID_PUTSTATEID); 4260 } else { 4261 nfscl_reqstart(nd, NFSPROC_RELEASELCKOWN, nmp, NULL, 0, NULL, 4262 NULL); 4263 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 4264 *tl++ = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[0]; 4265 *tl = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[1]; 4266 NFSBCOPY(lp->nfsl_owner, own, NFSV4CL_LOCKNAMELEN); 4267 NFSBCOPY(fh, &own[NFSV4CL_LOCKNAMELEN], fhlen); 4268 (void)nfsm_strtom(nd, own, NFSV4CL_LOCKNAMELEN + fhlen); 4269 } 4270 nd->nd_flag |= ND_USEGSSNAME; 4271 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 4272 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4273 if (error) 4274 return (error); 4275 error = nd->nd_repstat; 4276 mbuf_freem(nd->nd_mrep); 4277 return (error); 4278 } 4279 4280 /* 4281 * This function performs the Compound to get the mount pt FH. 4282 */ 4283 APPLESTATIC int 4284 nfsrpc_getdirpath(struct nfsmount *nmp, u_char *dirpath, struct ucred *cred, 4285 NFSPROC_T *p) 4286 { 4287 u_int32_t *tl; 4288 struct nfsrv_descript nfsd; 4289 struct nfsrv_descript *nd = &nfsd; 4290 u_char *cp, *cp2; 4291 int error, cnt, len, setnil; 4292 u_int32_t *opcntp; 4293 4294 nfscl_reqstart(nd, NFSPROC_PUTROOTFH, nmp, NULL, 0, &opcntp, NULL); 4295 cp = dirpath; 4296 cnt = 0; 4297 do { 4298 setnil = 0; 4299 while (*cp == '/') 4300 cp++; 4301 cp2 = cp; 4302 while (*cp2 != '\0' && *cp2 != '/') 4303 cp2++; 4304 if (*cp2 == '/') { 4305 setnil = 1; 4306 *cp2 = '\0'; 4307 } 4308 if (cp2 != cp) { 4309 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 4310 *tl = txdr_unsigned(NFSV4OP_LOOKUP); 4311 nfsm_strtom(nd, cp, strlen(cp)); 4312 cnt++; 4313 } 4314 if (setnil) 4315 *cp2++ = '/'; 4316 cp = cp2; 4317 } while (*cp != '\0'); 4318 if (NFSHASNFSV4N(nmp)) 4319 /* Has a Sequence Op done by nfscl_reqstart(). */ 4320 *opcntp = txdr_unsigned(3 + cnt); 4321 else 4322 *opcntp = txdr_unsigned(2 + cnt); 4323 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 4324 *tl = txdr_unsigned(NFSV4OP_GETFH); 4325 nd->nd_flag |= ND_USEGSSNAME; 4326 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 4327 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4328 if (error) 4329 return (error); 4330 if (nd->nd_repstat == 0) { 4331 NFSM_DISSECT(tl, u_int32_t *, (3 + 2 * cnt) * NFSX_UNSIGNED); 4332 tl += (2 + 2 * cnt); 4333 if ((len = fxdr_unsigned(int, *tl)) <= 0 || 4334 len > NFSX_FHMAX) { 4335 nd->nd_repstat = NFSERR_BADXDR; 4336 } else { 4337 nd->nd_repstat = nfsrv_mtostr(nd, nmp->nm_fh, len); 4338 if (nd->nd_repstat == 0) 4339 nmp->nm_fhsize = len; 4340 } 4341 } 4342 error = nd->nd_repstat; 4343 nfsmout: 4344 mbuf_freem(nd->nd_mrep); 4345 return (error); 4346 } 4347 4348 /* 4349 * This function performs the Delegreturn RPC. 4350 */ 4351 APPLESTATIC int 4352 nfsrpc_delegreturn(struct nfscldeleg *dp, struct ucred *cred, 4353 struct nfsmount *nmp, NFSPROC_T *p, int syscred) 4354 { 4355 u_int32_t *tl; 4356 struct nfsrv_descript nfsd; 4357 struct nfsrv_descript *nd = &nfsd; 4358 int error; 4359 4360 nfscl_reqstart(nd, NFSPROC_DELEGRETURN, nmp, dp->nfsdl_fh, 4361 dp->nfsdl_fhlen, NULL, NULL); 4362 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID); 4363 if (NFSHASNFSV4N(nmp)) 4364 *tl++ = 0; 4365 else 4366 *tl++ = dp->nfsdl_stateid.seqid; 4367 *tl++ = dp->nfsdl_stateid.other[0]; 4368 *tl++ = dp->nfsdl_stateid.other[1]; 4369 *tl = dp->nfsdl_stateid.other[2]; 4370 if (syscred) 4371 nd->nd_flag |= ND_USEGSSNAME; 4372 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 4373 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4374 if (error) 4375 return (error); 4376 error = nd->nd_repstat; 4377 mbuf_freem(nd->nd_mrep); 4378 return (error); 4379 } 4380 4381 /* 4382 * nfs getacl call. 4383 */ 4384 APPLESTATIC int 4385 nfsrpc_getacl(vnode_t vp, struct ucred *cred, NFSPROC_T *p, 4386 struct acl *aclp, void *stuff) 4387 { 4388 struct nfsrv_descript nfsd, *nd = &nfsd; 4389 int error; 4390 nfsattrbit_t attrbits; 4391 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 4392 4393 if (nfsrv_useacl == 0 || !NFSHASNFSV4(nmp)) 4394 return (EOPNOTSUPP); 4395 NFSCL_REQSTART(nd, NFSPROC_GETACL, vp); 4396 NFSZERO_ATTRBIT(&attrbits); 4397 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_ACL); 4398 (void) nfsrv_putattrbit(nd, &attrbits); 4399 error = nfscl_request(nd, vp, p, cred, stuff); 4400 if (error) 4401 return (error); 4402 if (!nd->nd_repstat) 4403 error = nfsv4_loadattr(nd, vp, NULL, NULL, NULL, 0, NULL, 4404 NULL, NULL, NULL, aclp, 0, NULL, NULL, NULL, p, cred); 4405 else 4406 error = nd->nd_repstat; 4407 mbuf_freem(nd->nd_mrep); 4408 return (error); 4409 } 4410 4411 /* 4412 * nfs setacl call. 4413 */ 4414 APPLESTATIC int 4415 nfsrpc_setacl(vnode_t vp, struct ucred *cred, NFSPROC_T *p, 4416 struct acl *aclp, void *stuff) 4417 { 4418 int error; 4419 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 4420 4421 if (nfsrv_useacl == 0 || !NFSHASNFSV4(nmp)) 4422 return (EOPNOTSUPP); 4423 error = nfsrpc_setattr(vp, NULL, aclp, cred, p, NULL, NULL, stuff); 4424 return (error); 4425 } 4426 4427 /* 4428 * nfs setacl call. 4429 */ 4430 static int 4431 nfsrpc_setaclrpc(vnode_t vp, struct ucred *cred, NFSPROC_T *p, 4432 struct acl *aclp, nfsv4stateid_t *stateidp, void *stuff) 4433 { 4434 struct nfsrv_descript nfsd, *nd = &nfsd; 4435 int error; 4436 nfsattrbit_t attrbits; 4437 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 4438 4439 if (!NFSHASNFSV4(nmp)) 4440 return (EOPNOTSUPP); 4441 NFSCL_REQSTART(nd, NFSPROC_SETACL, vp); 4442 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID); 4443 NFSZERO_ATTRBIT(&attrbits); 4444 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_ACL); 4445 (void) nfsv4_fillattr(nd, vnode_mount(vp), vp, aclp, NULL, NULL, 0, 4446 &attrbits, NULL, NULL, 0, 0, 0, 0, (uint64_t)0); 4447 error = nfscl_request(nd, vp, p, cred, stuff); 4448 if (error) 4449 return (error); 4450 /* Don't care about the pre/postop attributes */ 4451 mbuf_freem(nd->nd_mrep); 4452 return (nd->nd_repstat); 4453 } 4454 4455 /* 4456 * Do the NFSv4.1 Exchange ID. 4457 */ 4458 int 4459 nfsrpc_exchangeid(struct nfsmount *nmp, struct nfsclclient *clp, 4460 struct nfssockreq *nrp, uint32_t exchflags, struct nfsclds **dspp, 4461 struct ucred *cred, NFSPROC_T *p) 4462 { 4463 uint32_t *tl, v41flags; 4464 struct nfsrv_descript nfsd; 4465 struct nfsrv_descript *nd = &nfsd; 4466 struct nfsclds *dsp; 4467 struct timespec verstime; 4468 int error, len; 4469 4470 *dspp = NULL; 4471 nfscl_reqstart(nd, NFSPROC_EXCHANGEID, nmp, NULL, 0, NULL, NULL); 4472 NFSM_BUILD(tl, uint32_t *, 2 * NFSX_UNSIGNED); 4473 *tl++ = txdr_unsigned(nfsboottime.tv_sec); /* Client owner */ 4474 *tl = txdr_unsigned(clp->nfsc_rev); 4475 (void) nfsm_strtom(nd, clp->nfsc_id, clp->nfsc_idlen); 4476 4477 NFSM_BUILD(tl, uint32_t *, 3 * NFSX_UNSIGNED); 4478 *tl++ = txdr_unsigned(exchflags); 4479 *tl++ = txdr_unsigned(NFSV4EXCH_SP4NONE); 4480 4481 /* Set the implementation id4 */ 4482 *tl = txdr_unsigned(1); 4483 (void) nfsm_strtom(nd, "freebsd.org", strlen("freebsd.org")); 4484 (void) nfsm_strtom(nd, version, strlen(version)); 4485 NFSM_BUILD(tl, uint32_t *, NFSX_V4TIME); 4486 verstime.tv_sec = 1293840000; /* Jan 1, 2011 */ 4487 verstime.tv_nsec = 0; 4488 txdr_nfsv4time(&verstime, tl); 4489 nd->nd_flag |= ND_USEGSSNAME; 4490 error = newnfs_request(nd, nmp, NULL, nrp, NULL, p, cred, 4491 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4492 NFSCL_DEBUG(1, "exchangeid err=%d reps=%d\n", error, 4493 (int)nd->nd_repstat); 4494 if (error != 0) 4495 return (error); 4496 if (nd->nd_repstat == 0) { 4497 NFSM_DISSECT(tl, uint32_t *, 6 * NFSX_UNSIGNED + NFSX_HYPER); 4498 len = fxdr_unsigned(int, *(tl + 7)); 4499 if (len < 0 || len > NFSV4_OPAQUELIMIT) { 4500 error = NFSERR_BADXDR; 4501 goto nfsmout; 4502 } 4503 dsp = malloc(sizeof(struct nfsclds) + len, M_NFSCLDS, 4504 M_WAITOK | M_ZERO); 4505 dsp->nfsclds_expire = NFSD_MONOSEC + clp->nfsc_renew; 4506 dsp->nfsclds_servownlen = len; 4507 dsp->nfsclds_sess.nfsess_clientid.lval[0] = *tl++; 4508 dsp->nfsclds_sess.nfsess_clientid.lval[1] = *tl++; 4509 dsp->nfsclds_sess.nfsess_sequenceid = 4510 fxdr_unsigned(uint32_t, *tl++); 4511 v41flags = fxdr_unsigned(uint32_t, *tl); 4512 if ((v41flags & NFSV4EXCH_USEPNFSMDS) != 0 && 4513 NFSHASPNFSOPT(nmp)) { 4514 NFSCL_DEBUG(1, "set PNFS\n"); 4515 NFSLOCKMNT(nmp); 4516 nmp->nm_state |= NFSSTA_PNFS; 4517 NFSUNLOCKMNT(nmp); 4518 dsp->nfsclds_flags |= NFSCLDS_MDS; 4519 } 4520 if ((v41flags & NFSV4EXCH_USEPNFSDS) != 0) 4521 dsp->nfsclds_flags |= NFSCLDS_DS; 4522 if (len > 0) 4523 nd->nd_repstat = nfsrv_mtostr(nd, 4524 dsp->nfsclds_serverown, len); 4525 if (nd->nd_repstat == 0) { 4526 mtx_init(&dsp->nfsclds_mtx, "nfsds", NULL, MTX_DEF); 4527 mtx_init(&dsp->nfsclds_sess.nfsess_mtx, "nfssession", 4528 NULL, MTX_DEF); 4529 nfscl_initsessionslots(&dsp->nfsclds_sess); 4530 *dspp = dsp; 4531 } else 4532 free(dsp, M_NFSCLDS); 4533 } 4534 error = nd->nd_repstat; 4535 nfsmout: 4536 mbuf_freem(nd->nd_mrep); 4537 return (error); 4538 } 4539 4540 /* 4541 * Do the NFSv4.1 Create Session. 4542 */ 4543 int 4544 nfsrpc_createsession(struct nfsmount *nmp, struct nfsclsession *sep, 4545 struct nfssockreq *nrp, uint32_t sequenceid, int mds, struct ucred *cred, 4546 NFSPROC_T *p) 4547 { 4548 uint32_t crflags, *tl; 4549 struct nfsrv_descript nfsd; 4550 struct nfsrv_descript *nd = &nfsd; 4551 int error, irdcnt; 4552 4553 nfscl_reqstart(nd, NFSPROC_CREATESESSION, nmp, NULL, 0, NULL, NULL); 4554 NFSM_BUILD(tl, uint32_t *, 4 * NFSX_UNSIGNED); 4555 *tl++ = sep->nfsess_clientid.lval[0]; 4556 *tl++ = sep->nfsess_clientid.lval[1]; 4557 *tl++ = txdr_unsigned(sequenceid); 4558 crflags = (NFSMNT_RDONLY(nmp->nm_mountp) ? 0 : NFSV4CRSESS_PERSIST); 4559 if (nfscl_enablecallb != 0 && nfs_numnfscbd > 0) 4560 crflags |= NFSV4CRSESS_CONNBACKCHAN; 4561 *tl = txdr_unsigned(crflags); 4562 4563 /* Fill in fore channel attributes. */ 4564 NFSM_BUILD(tl, uint32_t *, 7 * NFSX_UNSIGNED); 4565 *tl++ = 0; /* Header pad size */ 4566 *tl++ = txdr_unsigned(100000); /* Max request size */ 4567 *tl++ = txdr_unsigned(100000); /* Max response size */ 4568 *tl++ = txdr_unsigned(4096); /* Max response size cached */ 4569 *tl++ = txdr_unsigned(20); /* Max operations */ 4570 *tl++ = txdr_unsigned(64); /* Max slots */ 4571 *tl = 0; /* No rdma ird */ 4572 4573 /* Fill in back channel attributes. */ 4574 NFSM_BUILD(tl, uint32_t *, 7 * NFSX_UNSIGNED); 4575 *tl++ = 0; /* Header pad size */ 4576 *tl++ = txdr_unsigned(10000); /* Max request size */ 4577 *tl++ = txdr_unsigned(10000); /* Max response size */ 4578 *tl++ = txdr_unsigned(4096); /* Max response size cached */ 4579 *tl++ = txdr_unsigned(4); /* Max operations */ 4580 *tl++ = txdr_unsigned(NFSV4_CBSLOTS); /* Max slots */ 4581 *tl = 0; /* No rdma ird */ 4582 4583 NFSM_BUILD(tl, uint32_t *, 8 * NFSX_UNSIGNED); 4584 *tl++ = txdr_unsigned(NFS_CALLBCKPROG); /* Call back prog # */ 4585 4586 /* Allow AUTH_SYS callbacks as uid, gid == 0. */ 4587 *tl++ = txdr_unsigned(1); /* Auth_sys only */ 4588 *tl++ = txdr_unsigned(AUTH_SYS); /* AUTH_SYS type */ 4589 *tl++ = txdr_unsigned(nfsboottime.tv_sec); /* time stamp */ 4590 *tl++ = 0; /* Null machine name */ 4591 *tl++ = 0; /* Uid == 0 */ 4592 *tl++ = 0; /* Gid == 0 */ 4593 *tl = 0; /* No additional gids */ 4594 nd->nd_flag |= ND_USEGSSNAME; 4595 error = newnfs_request(nd, nmp, NULL, nrp, NULL, p, cred, NFS_PROG, 4596 NFS_VER4, NULL, 1, NULL, NULL); 4597 if (error != 0) 4598 return (error); 4599 if (nd->nd_repstat == 0) { 4600 NFSM_DISSECT(tl, uint32_t *, NFSX_V4SESSIONID + 4601 2 * NFSX_UNSIGNED); 4602 bcopy(tl, sep->nfsess_sessionid, NFSX_V4SESSIONID); 4603 tl += NFSX_V4SESSIONID / NFSX_UNSIGNED; 4604 sep->nfsess_sequenceid = fxdr_unsigned(uint32_t, *tl++); 4605 crflags = fxdr_unsigned(uint32_t, *tl); 4606 if ((crflags & NFSV4CRSESS_PERSIST) != 0 && mds != 0) { 4607 NFSLOCKMNT(nmp); 4608 nmp->nm_state |= NFSSTA_SESSPERSIST; 4609 NFSUNLOCKMNT(nmp); 4610 } 4611 4612 /* Get the fore channel slot count. */ 4613 NFSM_DISSECT(tl, uint32_t *, 7 * NFSX_UNSIGNED); 4614 tl += 3; /* Skip the other counts. */ 4615 sep->nfsess_maxcache = fxdr_unsigned(int, *tl++); 4616 tl++; 4617 sep->nfsess_foreslots = fxdr_unsigned(uint16_t, *tl++); 4618 NFSCL_DEBUG(4, "fore slots=%d\n", (int)sep->nfsess_foreslots); 4619 irdcnt = fxdr_unsigned(int, *tl); 4620 if (irdcnt > 0) 4621 NFSM_DISSECT(tl, uint32_t *, irdcnt * NFSX_UNSIGNED); 4622 4623 /* and the back channel slot count. */ 4624 NFSM_DISSECT(tl, uint32_t *, 7 * NFSX_UNSIGNED); 4625 tl += 5; 4626 sep->nfsess_backslots = fxdr_unsigned(uint16_t, *tl); 4627 NFSCL_DEBUG(4, "back slots=%d\n", (int)sep->nfsess_backslots); 4628 } 4629 error = nd->nd_repstat; 4630 nfsmout: 4631 mbuf_freem(nd->nd_mrep); 4632 return (error); 4633 } 4634 4635 /* 4636 * Do the NFSv4.1 Destroy Session. 4637 */ 4638 int 4639 nfsrpc_destroysession(struct nfsmount *nmp, struct nfsclclient *clp, 4640 struct ucred *cred, NFSPROC_T *p) 4641 { 4642 uint32_t *tl; 4643 struct nfsrv_descript nfsd; 4644 struct nfsrv_descript *nd = &nfsd; 4645 int error; 4646 4647 nfscl_reqstart(nd, NFSPROC_DESTROYSESSION, nmp, NULL, 0, NULL, NULL); 4648 NFSM_BUILD(tl, uint32_t *, NFSX_V4SESSIONID); 4649 bcopy(NFSMNT_MDSSESSION(nmp)->nfsess_sessionid, tl, NFSX_V4SESSIONID); 4650 nd->nd_flag |= ND_USEGSSNAME; 4651 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 4652 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4653 if (error != 0) 4654 return (error); 4655 error = nd->nd_repstat; 4656 mbuf_freem(nd->nd_mrep); 4657 return (error); 4658 } 4659 4660 /* 4661 * Do the NFSv4.1 Destroy Client. 4662 */ 4663 int 4664 nfsrpc_destroyclient(struct nfsmount *nmp, struct nfsclclient *clp, 4665 struct ucred *cred, NFSPROC_T *p) 4666 { 4667 uint32_t *tl; 4668 struct nfsrv_descript nfsd; 4669 struct nfsrv_descript *nd = &nfsd; 4670 int error; 4671 4672 nfscl_reqstart(nd, NFSPROC_DESTROYCLIENT, nmp, NULL, 0, NULL, NULL); 4673 NFSM_BUILD(tl, uint32_t *, 2 * NFSX_UNSIGNED); 4674 *tl++ = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[0]; 4675 *tl = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[1]; 4676 nd->nd_flag |= ND_USEGSSNAME; 4677 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 4678 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4679 if (error != 0) 4680 return (error); 4681 error = nd->nd_repstat; 4682 mbuf_freem(nd->nd_mrep); 4683 return (error); 4684 } 4685 4686 /* 4687 * Do the NFSv4.1 LayoutGet. 4688 */ 4689 int 4690 nfsrpc_layoutget(struct nfsmount *nmp, uint8_t *fhp, int fhlen, int iomode, 4691 uint64_t offset, uint64_t len, uint64_t minlen, int layoutlen, 4692 nfsv4stateid_t *stateidp, int *retonclosep, struct nfsclflayouthead *flhp, 4693 struct ucred *cred, NFSPROC_T *p, void *stuff) 4694 { 4695 uint32_t *tl; 4696 struct nfsrv_descript nfsd, *nd = &nfsd; 4697 struct nfsfh *nfhp; 4698 struct nfsclflayout *flp, *prevflp, *tflp; 4699 int cnt, error, gotiomode, fhcnt, nfhlen, i, j; 4700 uint8_t *cp; 4701 uint64_t retlen; 4702 4703 flp = NULL; 4704 gotiomode = -1; 4705 nfscl_reqstart(nd, NFSPROC_LAYOUTGET, nmp, fhp, fhlen, NULL, NULL); 4706 NFSM_BUILD(tl, uint32_t *, 4 * NFSX_UNSIGNED + 3 * NFSX_HYPER + 4707 NFSX_STATEID); 4708 *tl++ = newnfs_false; /* Don't signal availability. */ 4709 *tl++ = txdr_unsigned(NFSLAYOUT_NFSV4_1_FILES); 4710 *tl++ = txdr_unsigned(iomode); 4711 txdr_hyper(offset, tl); 4712 tl += 2; 4713 txdr_hyper(len, tl); 4714 tl += 2; 4715 txdr_hyper(minlen, tl); 4716 tl += 2; 4717 *tl++ = txdr_unsigned(stateidp->seqid); 4718 NFSCL_DEBUG(4, "layget seq=%d\n", (int)stateidp->seqid); 4719 *tl++ = stateidp->other[0]; 4720 *tl++ = stateidp->other[1]; 4721 *tl++ = stateidp->other[2]; 4722 *tl = txdr_unsigned(layoutlen); 4723 nd->nd_flag |= ND_USEGSSNAME; 4724 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 4725 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4726 if (error != 0) 4727 return (error); 4728 if (nd->nd_repstat == 0) { 4729 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED + NFSX_STATEID); 4730 if (*tl++ != 0) 4731 *retonclosep = 1; 4732 else 4733 *retonclosep = 0; 4734 stateidp->seqid = fxdr_unsigned(uint32_t, *tl++); 4735 NFSCL_DEBUG(4, "retoncls=%d stseq=%d\n", *retonclosep, 4736 (int)stateidp->seqid); 4737 stateidp->other[0] = *tl++; 4738 stateidp->other[1] = *tl++; 4739 stateidp->other[2] = *tl++; 4740 cnt = fxdr_unsigned(int, *tl); 4741 NFSCL_DEBUG(4, "layg cnt=%d\n", cnt); 4742 if (cnt <= 0 || cnt > 10000) { 4743 /* Don't accept more than 10000 layouts in reply. */ 4744 error = NFSERR_BADXDR; 4745 goto nfsmout; 4746 } 4747 for (i = 0; i < cnt; i++) { 4748 /* Dissect all the way to the file handle cnt. */ 4749 NFSM_DISSECT(tl, uint32_t *, 3 * NFSX_HYPER + 4750 6 * NFSX_UNSIGNED + NFSX_V4DEVICEID); 4751 fhcnt = fxdr_unsigned(int, *(tl + 11 + 4752 NFSX_V4DEVICEID / NFSX_UNSIGNED)); 4753 NFSCL_DEBUG(4, "fhcnt=%d\n", fhcnt); 4754 if (fhcnt < 0 || fhcnt > 100) { 4755 /* Don't accept more than 100 file handles. */ 4756 error = NFSERR_BADXDR; 4757 goto nfsmout; 4758 } 4759 if (fhcnt > 1) 4760 flp = malloc(sizeof(*flp) + (fhcnt - 1) * 4761 sizeof(struct nfsfh *), 4762 M_NFSFLAYOUT, M_WAITOK); 4763 else 4764 flp = malloc(sizeof(*flp), 4765 M_NFSFLAYOUT, M_WAITOK); 4766 flp->nfsfl_flags = 0; 4767 flp->nfsfl_fhcnt = 0; 4768 flp->nfsfl_devp = NULL; 4769 flp->nfsfl_off = fxdr_hyper(tl); tl += 2; 4770 retlen = fxdr_hyper(tl); tl += 2; 4771 if (flp->nfsfl_off + retlen < flp->nfsfl_off) 4772 flp->nfsfl_end = UINT64_MAX - flp->nfsfl_off; 4773 else 4774 flp->nfsfl_end = flp->nfsfl_off + retlen; 4775 flp->nfsfl_iomode = fxdr_unsigned(int, *tl++); 4776 if (gotiomode == -1) 4777 gotiomode = flp->nfsfl_iomode; 4778 NFSCL_DEBUG(4, "layg reqiom=%d retiom=%d\n", iomode, 4779 (int)flp->nfsfl_iomode); 4780 if (fxdr_unsigned(int, *tl++) != 4781 NFSLAYOUT_NFSV4_1_FILES) { 4782 printf("NFSv4.1: got non-files layout\n"); 4783 error = NFSERR_BADXDR; 4784 goto nfsmout; 4785 } 4786 NFSBCOPY(++tl, flp->nfsfl_dev, NFSX_V4DEVICEID); 4787 tl += (NFSX_V4DEVICEID / NFSX_UNSIGNED); 4788 flp->nfsfl_util = fxdr_unsigned(uint32_t, *tl++); 4789 NFSCL_DEBUG(4, "flutil=0x%x\n", flp->nfsfl_util); 4790 flp->nfsfl_stripe1 = fxdr_unsigned(uint32_t, *tl++); 4791 flp->nfsfl_patoff = fxdr_hyper(tl); tl += 2; 4792 if (fxdr_unsigned(int, *tl) != fhcnt) { 4793 printf("EEK! bad fhcnt\n"); 4794 error = NFSERR_BADXDR; 4795 goto nfsmout; 4796 } 4797 for (j = 0; j < fhcnt; j++) { 4798 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 4799 nfhlen = fxdr_unsigned(int, *tl); 4800 if (nfhlen <= 0 || nfhlen > NFSX_V4FHMAX) { 4801 error = NFSERR_BADXDR; 4802 goto nfsmout; 4803 } 4804 nfhp = malloc(sizeof(*nfhp) + nfhlen - 1, 4805 M_NFSFH, M_WAITOK); 4806 flp->nfsfl_fh[j] = nfhp; 4807 flp->nfsfl_fhcnt++; 4808 nfhp->nfh_len = nfhlen; 4809 NFSM_DISSECT(cp, uint8_t *, NFSM_RNDUP(nfhlen)); 4810 NFSBCOPY(cp, nfhp->nfh_fh, nfhlen); 4811 } 4812 if (flp->nfsfl_iomode == gotiomode) { 4813 /* Keep the list in increasing offset order. */ 4814 tflp = LIST_FIRST(flhp); 4815 prevflp = NULL; 4816 while (tflp != NULL && 4817 tflp->nfsfl_off < flp->nfsfl_off) { 4818 prevflp = tflp; 4819 tflp = LIST_NEXT(tflp, nfsfl_list); 4820 } 4821 if (prevflp == NULL) 4822 LIST_INSERT_HEAD(flhp, flp, nfsfl_list); 4823 else 4824 LIST_INSERT_AFTER(prevflp, flp, 4825 nfsfl_list); 4826 } else { 4827 printf("nfscl_layoutget(): got wrong iomode\n"); 4828 nfscl_freeflayout(flp); 4829 } 4830 flp = NULL; 4831 } 4832 } 4833 if (nd->nd_repstat != 0 && error == 0) 4834 error = nd->nd_repstat; 4835 nfsmout: 4836 if (error != 0 && flp != NULL) 4837 nfscl_freeflayout(flp); 4838 mbuf_freem(nd->nd_mrep); 4839 return (error); 4840 } 4841 4842 /* 4843 * Do the NFSv4.1 Get Device Info. 4844 */ 4845 int 4846 nfsrpc_getdeviceinfo(struct nfsmount *nmp, uint8_t *deviceid, int layouttype, 4847 uint32_t *notifybitsp, struct nfscldevinfo **ndip, struct ucred *cred, 4848 NFSPROC_T *p) 4849 { 4850 uint32_t cnt, *tl; 4851 struct nfsrv_descript nfsd; 4852 struct nfsrv_descript *nd = &nfsd; 4853 struct sockaddr_storage ss; 4854 struct nfsclds *dsp = NULL, **dspp; 4855 struct nfscldevinfo *ndi; 4856 int addrcnt, bitcnt, error, i, isudp, j, pos, safilled, stripecnt; 4857 uint8_t stripeindex; 4858 4859 *ndip = NULL; 4860 ndi = NULL; 4861 nfscl_reqstart(nd, NFSPROC_GETDEVICEINFO, nmp, NULL, 0, NULL, NULL); 4862 NFSM_BUILD(tl, uint32_t *, NFSX_V4DEVICEID + 3 * NFSX_UNSIGNED); 4863 NFSBCOPY(deviceid, tl, NFSX_V4DEVICEID); 4864 tl += (NFSX_V4DEVICEID / NFSX_UNSIGNED); 4865 *tl++ = txdr_unsigned(layouttype); 4866 *tl++ = txdr_unsigned(100000); 4867 if (notifybitsp != NULL && *notifybitsp != 0) { 4868 *tl = txdr_unsigned(1); /* One word of bits. */ 4869 NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED); 4870 *tl = txdr_unsigned(*notifybitsp); 4871 } else 4872 *tl = txdr_unsigned(0); 4873 nd->nd_flag |= ND_USEGSSNAME; 4874 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 4875 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4876 if (error != 0) 4877 return (error); 4878 if (nd->nd_repstat == 0) { 4879 NFSM_DISSECT(tl, uint32_t *, 3 * NFSX_UNSIGNED); 4880 if (layouttype != fxdr_unsigned(int, *tl++)) 4881 printf("EEK! devinfo layout type not same!\n"); 4882 stripecnt = fxdr_unsigned(int, *++tl); 4883 NFSCL_DEBUG(4, "stripecnt=%d\n", stripecnt); 4884 if (stripecnt < 1 || stripecnt > 4096) { 4885 printf("NFS devinfo stripecnt %d: out of range\n", 4886 stripecnt); 4887 error = NFSERR_BADXDR; 4888 goto nfsmout; 4889 } 4890 NFSM_DISSECT(tl, uint32_t *, (stripecnt + 1) * NFSX_UNSIGNED); 4891 addrcnt = fxdr_unsigned(int, *(tl + stripecnt)); 4892 NFSCL_DEBUG(4, "addrcnt=%d\n", addrcnt); 4893 if (addrcnt < 1 || addrcnt > 128) { 4894 printf("NFS devinfo addrcnt %d: out of range\n", 4895 addrcnt); 4896 error = NFSERR_BADXDR; 4897 goto nfsmout; 4898 } 4899 4900 /* 4901 * Now we know how many stripe indices and addresses, so 4902 * we can allocate the structure the correct size. 4903 */ 4904 i = (stripecnt * sizeof(uint8_t)) / sizeof(struct nfsclds *) 4905 + 1; 4906 NFSCL_DEBUG(4, "stripeindices=%d\n", i); 4907 ndi = malloc(sizeof(*ndi) + (addrcnt + i) * 4908 sizeof(struct nfsclds *), M_NFSDEVINFO, M_WAITOK | M_ZERO); 4909 NFSBCOPY(deviceid, ndi->nfsdi_deviceid, NFSX_V4DEVICEID); 4910 ndi->nfsdi_refcnt = 0; 4911 ndi->nfsdi_stripecnt = stripecnt; 4912 ndi->nfsdi_addrcnt = addrcnt; 4913 /* Fill in the stripe indices. */ 4914 for (i = 0; i < stripecnt; i++) { 4915 stripeindex = fxdr_unsigned(uint8_t, *tl++); 4916 NFSCL_DEBUG(4, "stripeind=%d\n", stripeindex); 4917 if (stripeindex >= addrcnt) { 4918 printf("NFS devinfo stripeindex %d: too big\n", 4919 (int)stripeindex); 4920 error = NFSERR_BADXDR; 4921 goto nfsmout; 4922 } 4923 nfsfldi_setstripeindex(ndi, i, stripeindex); 4924 } 4925 4926 /* Now, dissect the server address(es). */ 4927 safilled = 0; 4928 for (i = 0; i < addrcnt; i++) { 4929 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 4930 cnt = fxdr_unsigned(uint32_t, *tl); 4931 if (cnt == 0) { 4932 printf("NFS devinfo 0 len addrlist\n"); 4933 error = NFSERR_BADXDR; 4934 goto nfsmout; 4935 } 4936 dspp = nfsfldi_addr(ndi, i); 4937 pos = arc4random() % cnt; /* Choose one. */ 4938 safilled = 0; 4939 for (j = 0; j < cnt; j++) { 4940 error = nfsv4_getipaddr(nd, &ss, &isudp); 4941 if (error != 0 && error != EPERM) { 4942 error = NFSERR_BADXDR; 4943 goto nfsmout; 4944 } 4945 if (error == 0 && isudp == 0) { 4946 /* 4947 * The algorithm is: 4948 * - use "pos" entry if it is of the 4949 * same af_family or none of them 4950 * is of the same af_family 4951 * else 4952 * - use the first one of the same 4953 * af_family. 4954 */ 4955 if ((safilled == 0 && ss.ss_family == 4956 nmp->nm_nam->sa_family) || 4957 (j == pos && 4958 (safilled == 0 || ss.ss_family == 4959 nmp->nm_nam->sa_family)) || 4960 (safilled == 1 && ss.ss_family == 4961 nmp->nm_nam->sa_family)) { 4962 error = nfsrpc_fillsa(nmp, &ss, 4963 &dsp, p); 4964 if (error == 0) { 4965 *dspp = dsp; 4966 if (ss.ss_family == 4967 nmp->nm_nam->sa_family) 4968 safilled = 2; 4969 else 4970 safilled = 1; 4971 } 4972 } 4973 } 4974 } 4975 if (safilled == 0) 4976 break; 4977 } 4978 4979 /* And the notify bits. */ 4980 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 4981 if (safilled != 0) { 4982 bitcnt = fxdr_unsigned(int, *tl); 4983 if (bitcnt > 0) { 4984 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 4985 if (notifybitsp != NULL) 4986 *notifybitsp = 4987 fxdr_unsigned(uint32_t, *tl); 4988 } 4989 *ndip = ndi; 4990 } else 4991 error = EPERM; 4992 } 4993 if (nd->nd_repstat != 0) 4994 error = nd->nd_repstat; 4995 nfsmout: 4996 if (error != 0 && ndi != NULL) 4997 nfscl_freedevinfo(ndi); 4998 mbuf_freem(nd->nd_mrep); 4999 return (error); 5000 } 5001 5002 /* 5003 * Do the NFSv4.1 LayoutCommit. 5004 */ 5005 int 5006 nfsrpc_layoutcommit(struct nfsmount *nmp, uint8_t *fh, int fhlen, int reclaim, 5007 uint64_t off, uint64_t len, uint64_t lastbyte, nfsv4stateid_t *stateidp, 5008 int layouttype, int layoutupdatecnt, uint8_t *layp, struct ucred *cred, 5009 NFSPROC_T *p, void *stuff) 5010 { 5011 uint32_t *tl; 5012 struct nfsrv_descript nfsd, *nd = &nfsd; 5013 int error, outcnt, i; 5014 uint8_t *cp; 5015 5016 nfscl_reqstart(nd, NFSPROC_LAYOUTCOMMIT, nmp, fh, fhlen, NULL, NULL); 5017 NFSM_BUILD(tl, uint32_t *, 5 * NFSX_UNSIGNED + 3 * NFSX_HYPER + 5018 NFSX_STATEID); 5019 txdr_hyper(off, tl); 5020 tl += 2; 5021 txdr_hyper(len, tl); 5022 tl += 2; 5023 if (reclaim != 0) 5024 *tl++ = newnfs_true; 5025 else 5026 *tl++ = newnfs_false; 5027 *tl++ = txdr_unsigned(stateidp->seqid); 5028 *tl++ = stateidp->other[0]; 5029 *tl++ = stateidp->other[1]; 5030 *tl++ = stateidp->other[2]; 5031 *tl++ = newnfs_true; 5032 if (lastbyte < off) 5033 lastbyte = off; 5034 else if (lastbyte >= (off + len)) 5035 lastbyte = off + len - 1; 5036 txdr_hyper(lastbyte, tl); 5037 tl += 2; 5038 *tl++ = newnfs_false; 5039 *tl++ = txdr_unsigned(layouttype); 5040 *tl = txdr_unsigned(layoutupdatecnt); 5041 if (layoutupdatecnt > 0) { 5042 KASSERT(layouttype != NFSLAYOUT_NFSV4_1_FILES, 5043 ("Must be nil for Files Layout")); 5044 outcnt = NFSM_RNDUP(layoutupdatecnt); 5045 NFSM_BUILD(cp, uint8_t *, outcnt); 5046 NFSBCOPY(layp, cp, layoutupdatecnt); 5047 cp += layoutupdatecnt; 5048 for (i = 0; i < (outcnt - layoutupdatecnt); i++) 5049 *cp++ = 0x0; 5050 } 5051 nd->nd_flag |= ND_USEGSSNAME; 5052 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 5053 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 5054 if (error != 0) 5055 return (error); 5056 error = nd->nd_repstat; 5057 mbuf_freem(nd->nd_mrep); 5058 return (error); 5059 } 5060 5061 /* 5062 * Do the NFSv4.1 LayoutReturn. 5063 */ 5064 int 5065 nfsrpc_layoutreturn(struct nfsmount *nmp, uint8_t *fh, int fhlen, int reclaim, 5066 int layouttype, uint32_t iomode, int layoutreturn, uint64_t offset, 5067 uint64_t len, nfsv4stateid_t *stateidp, int layoutcnt, uint32_t *layp, 5068 struct ucred *cred, NFSPROC_T *p, void *stuff) 5069 { 5070 uint32_t *tl; 5071 struct nfsrv_descript nfsd, *nd = &nfsd; 5072 int error, outcnt, i; 5073 uint8_t *cp; 5074 5075 nfscl_reqstart(nd, NFSPROC_LAYOUTRETURN, nmp, fh, fhlen, NULL, NULL); 5076 NFSM_BUILD(tl, uint32_t *, 4 * NFSX_UNSIGNED); 5077 if (reclaim != 0) 5078 *tl++ = newnfs_true; 5079 else 5080 *tl++ = newnfs_false; 5081 *tl++ = txdr_unsigned(layouttype); 5082 *tl++ = txdr_unsigned(iomode); 5083 *tl = txdr_unsigned(layoutreturn); 5084 if (layoutreturn == NFSLAYOUTRETURN_FILE) { 5085 NFSM_BUILD(tl, uint32_t *, 2 * NFSX_HYPER + NFSX_STATEID + 5086 NFSX_UNSIGNED); 5087 txdr_hyper(offset, tl); 5088 tl += 2; 5089 txdr_hyper(len, tl); 5090 tl += 2; 5091 NFSCL_DEBUG(4, "layoutret stseq=%d\n", (int)stateidp->seqid); 5092 *tl++ = txdr_unsigned(stateidp->seqid); 5093 *tl++ = stateidp->other[0]; 5094 *tl++ = stateidp->other[1]; 5095 *tl++ = stateidp->other[2]; 5096 *tl = txdr_unsigned(layoutcnt); 5097 if (layoutcnt > 0) { 5098 outcnt = NFSM_RNDUP(layoutcnt); 5099 NFSM_BUILD(cp, uint8_t *, outcnt); 5100 NFSBCOPY(layp, cp, layoutcnt); 5101 cp += layoutcnt; 5102 for (i = 0; i < (outcnt - layoutcnt); i++) 5103 *cp++ = 0x0; 5104 } 5105 } 5106 nd->nd_flag |= ND_USEGSSNAME; 5107 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 5108 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 5109 if (error != 0) 5110 return (error); 5111 if (nd->nd_repstat == 0) { 5112 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 5113 if (*tl != 0) { 5114 NFSM_DISSECT(tl, uint32_t *, NFSX_STATEID); 5115 stateidp->seqid = fxdr_unsigned(uint32_t, *tl++); 5116 stateidp->other[0] = *tl++; 5117 stateidp->other[1] = *tl++; 5118 stateidp->other[2] = *tl; 5119 } 5120 } else 5121 error = nd->nd_repstat; 5122 nfsmout: 5123 mbuf_freem(nd->nd_mrep); 5124 return (error); 5125 } 5126 5127 /* 5128 * Acquire a layout and devinfo, if possible. The caller must have acquired 5129 * a reference count on the nfsclclient structure before calling this. 5130 * Return the layout in lypp with a reference count on it, if successful. 5131 */ 5132 static int 5133 nfsrpc_getlayout(struct nfsmount *nmp, vnode_t vp, struct nfsfh *nfhp, 5134 int iomode, uint32_t *notifybitsp, nfsv4stateid_t *stateidp, uint64_t off, 5135 struct nfscllayout **lypp, struct ucred *cred, NFSPROC_T *p) 5136 { 5137 struct nfscllayout *lyp; 5138 struct nfsclflayout *flp, *tflp; 5139 struct nfscldevinfo *dip; 5140 struct nfsclflayouthead flh; 5141 int error = 0, islocked, layoutlen, recalled, retonclose; 5142 nfsv4stateid_t stateid; 5143 5144 *lypp = NULL; 5145 /* 5146 * If lyp is returned non-NULL, there will be a refcnt (shared lock) 5147 * on it, iff flp != NULL or a lock (exclusive lock) on it iff 5148 * flp == NULL. 5149 */ 5150 lyp = nfscl_getlayout(nmp->nm_clp, nfhp->nfh_fh, nfhp->nfh_len, 5151 off, &flp, &recalled); 5152 islocked = 0; 5153 if (lyp == NULL || flp == NULL) { 5154 if (recalled != 0) 5155 return (EIO); 5156 LIST_INIT(&flh); 5157 layoutlen = NFSMNT_MDSSESSION(nmp)->nfsess_maxcache - 5158 (NFSX_STATEID + 3 * NFSX_UNSIGNED); 5159 if (lyp == NULL) { 5160 stateid.seqid = 0; 5161 stateid.other[0] = stateidp->other[0]; 5162 stateid.other[1] = stateidp->other[1]; 5163 stateid.other[2] = stateidp->other[2]; 5164 error = nfsrpc_layoutget(nmp, nfhp->nfh_fh, 5165 nfhp->nfh_len, iomode, (uint64_t)0, INT64_MAX, 5166 (uint64_t)0, layoutlen, &stateid, &retonclose, 5167 &flh, cred, p, NULL); 5168 } else { 5169 islocked = 1; 5170 stateid.seqid = lyp->nfsly_stateid.seqid; 5171 stateid.other[0] = lyp->nfsly_stateid.other[0]; 5172 stateid.other[1] = lyp->nfsly_stateid.other[1]; 5173 stateid.other[2] = lyp->nfsly_stateid.other[2]; 5174 error = nfsrpc_layoutget(nmp, nfhp->nfh_fh, 5175 nfhp->nfh_len, iomode, off, INT64_MAX, 5176 (uint64_t)0, layoutlen, &stateid, &retonclose, 5177 &flh, cred, p, NULL); 5178 } 5179 if (error == 0) 5180 LIST_FOREACH(tflp, &flh, nfsfl_list) { 5181 error = nfscl_adddevinfo(nmp, NULL, tflp); 5182 if (error != 0) { 5183 error = nfsrpc_getdeviceinfo(nmp, 5184 tflp->nfsfl_dev, 5185 NFSLAYOUT_NFSV4_1_FILES, 5186 notifybitsp, &dip, cred, p); 5187 if (error != 0) 5188 break; 5189 error = nfscl_adddevinfo(nmp, dip, 5190 tflp); 5191 if (error != 0) 5192 printf( 5193 "getlayout: cannot add\n"); 5194 } 5195 } 5196 if (error == 0) { 5197 /* 5198 * nfscl_layout() always returns with the nfsly_lock 5199 * set to a refcnt (shared lock). 5200 */ 5201 error = nfscl_layout(nmp, vp, nfhp->nfh_fh, 5202 nfhp->nfh_len, &stateid, retonclose, &flh, &lyp, 5203 cred, p); 5204 if (error == 0) 5205 *lypp = lyp; 5206 } else if (islocked != 0) 5207 nfsv4_unlock(&lyp->nfsly_lock, 0); 5208 } else 5209 *lypp = lyp; 5210 return (error); 5211 } 5212 5213 /* 5214 * Do a TCP connection plus exchange id and create session. 5215 * If successful, a "struct nfsclds" is linked into the list for the 5216 * mount point and a pointer to it is returned. 5217 */ 5218 static int 5219 nfsrpc_fillsa(struct nfsmount *nmp, struct sockaddr_storage *ssp, 5220 struct nfsclds **dspp, NFSPROC_T *p) 5221 { 5222 struct sockaddr_in *msad, *sad, *ssd; 5223 struct sockaddr_in6 *msad6, *sad6, *ssd6; 5224 struct nfsclclient *clp; 5225 struct nfssockreq *nrp; 5226 struct nfsclds *dsp, *tdsp; 5227 int error; 5228 enum nfsclds_state retv; 5229 uint32_t sequenceid; 5230 5231 KASSERT(nmp->nm_sockreq.nr_cred != NULL, 5232 ("nfsrpc_fillsa: NULL nr_cred")); 5233 NFSLOCKCLSTATE(); 5234 clp = nmp->nm_clp; 5235 NFSUNLOCKCLSTATE(); 5236 if (clp == NULL) 5237 return (EPERM); 5238 if (ssp->ss_family == AF_INET) { 5239 ssd = (struct sockaddr_in *)ssp; 5240 NFSLOCKMNT(nmp); 5241 5242 /* 5243 * Check to see if we already have a session for this 5244 * address that is usable for a DS. 5245 * Note that the MDS's address is in a different place 5246 * than the sessions already acquired for DS's. 5247 */ 5248 msad = (struct sockaddr_in *)nmp->nm_sockreq.nr_nam; 5249 tdsp = TAILQ_FIRST(&nmp->nm_sess); 5250 while (tdsp != NULL) { 5251 if (msad != NULL && msad->sin_family == AF_INET && 5252 ssd->sin_addr.s_addr == msad->sin_addr.s_addr && 5253 ssd->sin_port == msad->sin_port && 5254 (tdsp->nfsclds_flags & NFSCLDS_DS) != 0) { 5255 *dspp = tdsp; 5256 NFSUNLOCKMNT(nmp); 5257 NFSCL_DEBUG(4, "fnd same addr\n"); 5258 return (0); 5259 } 5260 tdsp = TAILQ_NEXT(tdsp, nfsclds_list); 5261 if (tdsp != NULL && tdsp->nfsclds_sockp != NULL) 5262 msad = (struct sockaddr_in *) 5263 tdsp->nfsclds_sockp->nr_nam; 5264 else 5265 msad = NULL; 5266 } 5267 NFSUNLOCKMNT(nmp); 5268 5269 /* No IP address match, so look for new/trunked one. */ 5270 sad = malloc(sizeof(*sad), M_SONAME, M_WAITOK | M_ZERO); 5271 sad->sin_len = sizeof(*sad); 5272 sad->sin_family = AF_INET; 5273 sad->sin_port = ssd->sin_port; 5274 sad->sin_addr.s_addr = ssd->sin_addr.s_addr; 5275 nrp = malloc(sizeof(*nrp), M_NFSSOCKREQ, M_WAITOK | M_ZERO); 5276 nrp->nr_nam = (struct sockaddr *)sad; 5277 } else if (ssp->ss_family == AF_INET6) { 5278 ssd6 = (struct sockaddr_in6 *)ssp; 5279 NFSLOCKMNT(nmp); 5280 5281 /* 5282 * Check to see if we already have a session for this 5283 * address that is usable for a DS. 5284 * Note that the MDS's address is in a different place 5285 * than the sessions already acquired for DS's. 5286 */ 5287 msad6 = (struct sockaddr_in6 *)nmp->nm_sockreq.nr_nam; 5288 tdsp = TAILQ_FIRST(&nmp->nm_sess); 5289 while (tdsp != NULL) { 5290 if (msad6 != NULL && msad6->sin6_family == AF_INET6 && 5291 IN6_ARE_ADDR_EQUAL(&ssd6->sin6_addr, 5292 &msad6->sin6_addr) && 5293 ssd6->sin6_port == msad6->sin6_port && 5294 (tdsp->nfsclds_flags & NFSCLDS_DS) != 0) { 5295 *dspp = tdsp; 5296 NFSUNLOCKMNT(nmp); 5297 return (0); 5298 } 5299 tdsp = TAILQ_NEXT(tdsp, nfsclds_list); 5300 if (tdsp != NULL && tdsp->nfsclds_sockp != NULL) 5301 msad6 = (struct sockaddr_in6 *) 5302 tdsp->nfsclds_sockp->nr_nam; 5303 else 5304 msad6 = NULL; 5305 } 5306 NFSUNLOCKMNT(nmp); 5307 5308 /* No IP address match, so look for new/trunked one. */ 5309 sad6 = malloc(sizeof(*sad6), M_SONAME, M_WAITOK | M_ZERO); 5310 sad6->sin6_len = sizeof(*sad6); 5311 sad6->sin6_family = AF_INET6; 5312 sad6->sin6_port = ssd6->sin6_port; 5313 NFSBCOPY(&ssd6->sin6_addr, &sad6->sin6_addr, 5314 sizeof(struct in6_addr)); 5315 nrp = malloc(sizeof(*nrp), M_NFSSOCKREQ, M_WAITOK | M_ZERO); 5316 nrp->nr_nam = (struct sockaddr *)sad6; 5317 } else 5318 return (EPERM); 5319 5320 nrp->nr_sotype = SOCK_STREAM; 5321 mtx_init(&nrp->nr_mtx, "nfssock", NULL, MTX_DEF); 5322 nrp->nr_prog = NFS_PROG; 5323 nrp->nr_vers = NFS_VER4; 5324 5325 /* 5326 * Use the credentials that were used for the mount, which are 5327 * in nmp->nm_sockreq.nr_cred for newnfs_connect() etc. 5328 * Ref. counting the credentials with crhold() is probably not 5329 * necessary, since nm_sockreq.nr_cred won't be crfree()'d until 5330 * unmount, but I did it anyhow. 5331 */ 5332 nrp->nr_cred = crhold(nmp->nm_sockreq.nr_cred); 5333 error = newnfs_connect(nmp, nrp, NULL, p, 0); 5334 NFSCL_DEBUG(3, "DS connect=%d\n", error); 5335 5336 /* Now, do the exchangeid and create session. */ 5337 if (error == 0) 5338 error = nfsrpc_exchangeid(nmp, clp, nrp, NFSV4EXCH_USEPNFSDS, 5339 &dsp, nrp->nr_cred, p); 5340 NFSCL_DEBUG(3, "DS exchangeid=%d\n", error); 5341 if (error == 0) { 5342 dsp->nfsclds_sockp = nrp; 5343 NFSLOCKMNT(nmp); 5344 retv = nfscl_getsameserver(nmp, dsp, &tdsp); 5345 NFSCL_DEBUG(3, "getsame ret=%d\n", retv); 5346 if (retv == NFSDSP_USETHISSESSION) { 5347 NFSUNLOCKMNT(nmp); 5348 /* 5349 * If there is already a session for this server, 5350 * use it. 5351 */ 5352 (void)newnfs_disconnect(nrp); 5353 nfscl_freenfsclds(dsp); 5354 *dspp = tdsp; 5355 return (0); 5356 } 5357 if (retv == NFSDSP_SEQTHISSESSION) 5358 sequenceid = tdsp->nfsclds_sess.nfsess_sequenceid; 5359 else 5360 sequenceid = dsp->nfsclds_sess.nfsess_sequenceid; 5361 NFSUNLOCKMNT(nmp); 5362 error = nfsrpc_createsession(nmp, &dsp->nfsclds_sess, 5363 nrp, sequenceid, 0, nrp->nr_cred, p); 5364 NFSCL_DEBUG(3, "DS createsess=%d\n", error); 5365 } else { 5366 NFSFREECRED(nrp->nr_cred); 5367 NFSFREEMUTEX(&nrp->nr_mtx); 5368 free(nrp->nr_nam, M_SONAME); 5369 free(nrp, M_NFSSOCKREQ); 5370 } 5371 if (error == 0) { 5372 NFSCL_DEBUG(3, "add DS session\n"); 5373 /* 5374 * Put it at the end of the list. That way the list 5375 * is ordered by when the entry was added. This matters 5376 * since the one done first is the one that should be 5377 * used for sequencid'ing any subsequent create sessions. 5378 */ 5379 NFSLOCKMNT(nmp); 5380 TAILQ_INSERT_TAIL(&nmp->nm_sess, dsp, nfsclds_list); 5381 NFSUNLOCKMNT(nmp); 5382 *dspp = dsp; 5383 } else if (dsp != NULL) 5384 nfscl_freenfsclds(dsp); 5385 return (error); 5386 } 5387 5388 /* 5389 * Do the NFSv4.1 Reclaim Complete. 5390 */ 5391 int 5392 nfsrpc_reclaimcomplete(struct nfsmount *nmp, struct ucred *cred, NFSPROC_T *p) 5393 { 5394 uint32_t *tl; 5395 struct nfsrv_descript nfsd; 5396 struct nfsrv_descript *nd = &nfsd; 5397 int error; 5398 5399 nfscl_reqstart(nd, NFSPROC_RECLAIMCOMPL, nmp, NULL, 0, NULL, NULL); 5400 NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED); 5401 *tl = newnfs_false; 5402 nd->nd_flag |= ND_USEGSSNAME; 5403 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 5404 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 5405 if (error != 0) 5406 return (error); 5407 error = nd->nd_repstat; 5408 mbuf_freem(nd->nd_mrep); 5409 return (error); 5410 } 5411 5412 /* 5413 * Initialize the slot tables for a session. 5414 */ 5415 static void 5416 nfscl_initsessionslots(struct nfsclsession *sep) 5417 { 5418 int i; 5419 5420 for (i = 0; i < NFSV4_CBSLOTS; i++) { 5421 if (sep->nfsess_cbslots[i].nfssl_reply != NULL) 5422 m_freem(sep->nfsess_cbslots[i].nfssl_reply); 5423 NFSBZERO(&sep->nfsess_cbslots[i], sizeof(struct nfsslot)); 5424 } 5425 for (i = 0; i < 64; i++) 5426 sep->nfsess_slotseq[i] = 0; 5427 sep->nfsess_slots = 0; 5428 } 5429 5430 /* 5431 * Called to try and do an I/O operation via an NFSv4.1 Data Server (DS). 5432 */ 5433 int 5434 nfscl_doiods(vnode_t vp, struct uio *uiop, int *iomode, int *must_commit, 5435 uint32_t rwaccess, struct ucred *cred, NFSPROC_T *p) 5436 { 5437 struct nfsnode *np = VTONFS(vp); 5438 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 5439 struct nfscllayout *layp; 5440 struct nfscldevinfo *dip; 5441 struct nfsclflayout *rflp; 5442 nfsv4stateid_t stateid; 5443 struct ucred *newcred; 5444 uint64_t lastbyte, len, off, oresid, xfer; 5445 int eof, error, iolaymode, recalled; 5446 void *lckp; 5447 5448 if (!NFSHASPNFS(nmp) || nfscl_enablecallb == 0 || nfs_numnfscbd == 0 || 5449 (np->n_flag & NNOLAYOUT) != 0) 5450 return (EIO); 5451 /* Now, get a reference cnt on the clientid for this mount. */ 5452 if (nfscl_getref(nmp) == 0) 5453 return (EIO); 5454 5455 /* Find an appropriate stateid. */ 5456 newcred = NFSNEWCRED(cred); 5457 error = nfscl_getstateid(vp, np->n_fhp->nfh_fh, np->n_fhp->nfh_len, 5458 rwaccess, 1, newcred, p, &stateid, &lckp); 5459 if (error != 0) { 5460 NFSFREECRED(newcred); 5461 nfscl_relref(nmp); 5462 return (error); 5463 } 5464 /* Search for a layout for this file. */ 5465 off = uiop->uio_offset; 5466 layp = nfscl_getlayout(nmp->nm_clp, np->n_fhp->nfh_fh, 5467 np->n_fhp->nfh_len, off, &rflp, &recalled); 5468 if (layp == NULL || rflp == NULL) { 5469 if (recalled != 0) { 5470 NFSFREECRED(newcred); 5471 nfscl_relref(nmp); 5472 return (EIO); 5473 } 5474 if (layp != NULL) { 5475 nfscl_rellayout(layp, (rflp == NULL) ? 1 : 0); 5476 layp = NULL; 5477 } 5478 /* Try and get a Layout, if it is supported. */ 5479 if (rwaccess == NFSV4OPEN_ACCESSWRITE || 5480 (np->n_flag & NWRITEOPENED) != 0) 5481 iolaymode = NFSLAYOUTIOMODE_RW; 5482 else 5483 iolaymode = NFSLAYOUTIOMODE_READ; 5484 error = nfsrpc_getlayout(nmp, vp, np->n_fhp, iolaymode, 5485 NULL, &stateid, off, &layp, newcred, p); 5486 if (error != 0) { 5487 NFSLOCKNODE(np); 5488 np->n_flag |= NNOLAYOUT; 5489 NFSUNLOCKNODE(np); 5490 if (lckp != NULL) 5491 nfscl_lockderef(lckp); 5492 NFSFREECRED(newcred); 5493 if (layp != NULL) 5494 nfscl_rellayout(layp, 0); 5495 nfscl_relref(nmp); 5496 return (error); 5497 } 5498 } 5499 5500 /* 5501 * Loop around finding a layout that works for the first part of 5502 * this I/O operation, and then call the function that actually 5503 * does the RPC. 5504 */ 5505 eof = 0; 5506 len = (uint64_t)uiop->uio_resid; 5507 while (len > 0 && error == 0 && eof == 0) { 5508 off = uiop->uio_offset; 5509 error = nfscl_findlayoutforio(layp, off, rwaccess, &rflp); 5510 if (error == 0) { 5511 oresid = xfer = (uint64_t)uiop->uio_resid; 5512 if (xfer > (rflp->nfsfl_end - rflp->nfsfl_off)) 5513 xfer = rflp->nfsfl_end - rflp->nfsfl_off; 5514 dip = nfscl_getdevinfo(nmp->nm_clp, rflp->nfsfl_dev, 5515 rflp->nfsfl_devp); 5516 if (dip != NULL) { 5517 error = nfscl_doflayoutio(vp, uiop, iomode, 5518 must_commit, &eof, &stateid, rwaccess, dip, 5519 layp, rflp, off, xfer, newcred, p); 5520 nfscl_reldevinfo(dip); 5521 lastbyte = off + xfer - 1; 5522 if (error == 0) { 5523 NFSLOCKCLSTATE(); 5524 if (lastbyte > layp->nfsly_lastbyte) 5525 layp->nfsly_lastbyte = lastbyte; 5526 NFSUNLOCKCLSTATE(); 5527 } 5528 } else 5529 error = EIO; 5530 if (error == 0) 5531 len -= (oresid - (uint64_t)uiop->uio_resid); 5532 } 5533 } 5534 if (lckp != NULL) 5535 nfscl_lockderef(lckp); 5536 NFSFREECRED(newcred); 5537 nfscl_rellayout(layp, 0); 5538 nfscl_relref(nmp); 5539 return (error); 5540 } 5541 5542 /* 5543 * Find a file layout that will handle the first bytes of the requested 5544 * range and return the information from it needed to to the I/O operation. 5545 */ 5546 int 5547 nfscl_findlayoutforio(struct nfscllayout *lyp, uint64_t off, uint32_t rwaccess, 5548 struct nfsclflayout **retflpp) 5549 { 5550 struct nfsclflayout *flp, *nflp, *rflp; 5551 uint32_t rw; 5552 5553 rflp = NULL; 5554 rw = rwaccess; 5555 /* For reading, do the Read list first and then the Write list. */ 5556 do { 5557 if (rw == NFSV4OPEN_ACCESSREAD) 5558 flp = LIST_FIRST(&lyp->nfsly_flayread); 5559 else 5560 flp = LIST_FIRST(&lyp->nfsly_flayrw); 5561 while (flp != NULL) { 5562 nflp = LIST_NEXT(flp, nfsfl_list); 5563 if (flp->nfsfl_off > off) 5564 break; 5565 if (flp->nfsfl_end > off && 5566 (rflp == NULL || rflp->nfsfl_end < flp->nfsfl_end)) 5567 rflp = flp; 5568 flp = nflp; 5569 } 5570 if (rw == NFSV4OPEN_ACCESSREAD) 5571 rw = NFSV4OPEN_ACCESSWRITE; 5572 else 5573 rw = 0; 5574 } while (rw != 0); 5575 if (rflp != NULL) { 5576 /* This one covers the most bytes starting at off. */ 5577 *retflpp = rflp; 5578 return (0); 5579 } 5580 return (EIO); 5581 } 5582 5583 /* 5584 * Do I/O using an NFSv4.1 file layout. 5585 */ 5586 static int 5587 nfscl_doflayoutio(vnode_t vp, struct uio *uiop, int *iomode, int *must_commit, 5588 int *eofp, nfsv4stateid_t *stateidp, int rwflag, struct nfscldevinfo *dp, 5589 struct nfscllayout *lyp, struct nfsclflayout *flp, uint64_t off, 5590 uint64_t len, struct ucred *cred, NFSPROC_T *p) 5591 { 5592 uint64_t io_off, rel_off, stripe_unit_size, transfer, xfer; 5593 int commit_thru_mds, error = 0, stripe_index, stripe_pos; 5594 struct nfsnode *np; 5595 struct nfsfh *fhp; 5596 struct nfsclds **dspp; 5597 5598 np = VTONFS(vp); 5599 rel_off = off - flp->nfsfl_patoff; 5600 stripe_unit_size = (flp->nfsfl_util >> 6) & 0x3ffffff; 5601 stripe_pos = (rel_off / stripe_unit_size + flp->nfsfl_stripe1) % 5602 dp->nfsdi_stripecnt; 5603 transfer = stripe_unit_size - (rel_off % stripe_unit_size); 5604 5605 /* Loop around, doing I/O for each stripe unit. */ 5606 while (len > 0 && error == 0) { 5607 stripe_index = nfsfldi_stripeindex(dp, stripe_pos); 5608 dspp = nfsfldi_addr(dp, stripe_index); 5609 if (len > transfer) 5610 xfer = transfer; 5611 else 5612 xfer = len; 5613 if ((flp->nfsfl_util & NFSFLAYUTIL_DENSE) != 0) { 5614 /* Dense layout. */ 5615 if (stripe_pos >= flp->nfsfl_fhcnt) 5616 return (EIO); 5617 fhp = flp->nfsfl_fh[stripe_pos]; 5618 io_off = (rel_off / (stripe_unit_size * 5619 dp->nfsdi_stripecnt)) * stripe_unit_size + 5620 rel_off % stripe_unit_size; 5621 } else { 5622 /* Sparse layout. */ 5623 if (flp->nfsfl_fhcnt > 1) { 5624 if (stripe_index >= flp->nfsfl_fhcnt) 5625 return (EIO); 5626 fhp = flp->nfsfl_fh[stripe_index]; 5627 } else if (flp->nfsfl_fhcnt == 1) 5628 fhp = flp->nfsfl_fh[0]; 5629 else 5630 fhp = np->n_fhp; 5631 io_off = off; 5632 } 5633 if ((flp->nfsfl_util & NFSFLAYUTIL_COMMIT_THRU_MDS) != 0) 5634 commit_thru_mds = 1; 5635 else 5636 commit_thru_mds = 0; 5637 if (rwflag == FREAD) 5638 error = nfsrpc_readds(vp, uiop, stateidp, eofp, *dspp, 5639 io_off, xfer, fhp, cred, p); 5640 else { 5641 error = nfsrpc_writeds(vp, uiop, iomode, must_commit, 5642 stateidp, *dspp, io_off, xfer, fhp, commit_thru_mds, 5643 cred, p); 5644 if (error == 0) { 5645 NFSLOCKCLSTATE(); 5646 lyp->nfsly_flags |= NFSLY_WRITTEN; 5647 NFSUNLOCKCLSTATE(); 5648 } 5649 } 5650 if (error == 0) { 5651 transfer = stripe_unit_size; 5652 stripe_pos = (stripe_pos + 1) % dp->nfsdi_stripecnt; 5653 len -= xfer; 5654 off += xfer; 5655 } 5656 } 5657 return (error); 5658 } 5659 5660 /* 5661 * The actual read RPC done to a DS. 5662 */ 5663 static int 5664 nfsrpc_readds(vnode_t vp, struct uio *uiop, nfsv4stateid_t *stateidp, int *eofp, 5665 struct nfsclds *dsp, uint64_t io_off, int len, struct nfsfh *fhp, 5666 struct ucred *cred, NFSPROC_T *p) 5667 { 5668 uint32_t *tl; 5669 int error, retlen; 5670 struct nfsrv_descript nfsd; 5671 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 5672 struct nfsrv_descript *nd = &nfsd; 5673 struct nfssockreq *nrp; 5674 5675 nd->nd_mrep = NULL; 5676 nfscl_reqstart(nd, NFSPROC_READDS, nmp, fhp->nfh_fh, fhp->nfh_len, 5677 NULL, &dsp->nfsclds_sess); 5678 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSEQIDZERO); 5679 NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED * 3); 5680 txdr_hyper(io_off, tl); 5681 *(tl + 2) = txdr_unsigned(len); 5682 nrp = dsp->nfsclds_sockp; 5683 if (nrp == NULL) 5684 /* If NULL, use the MDS socket. */ 5685 nrp = &nmp->nm_sockreq; 5686 error = newnfs_request(nd, nmp, NULL, nrp, vp, p, cred, 5687 NFS_PROG, NFS_VER4, NULL, 1, NULL, &dsp->nfsclds_sess); 5688 if (error != 0) 5689 return (error); 5690 if (nd->nd_repstat != 0) { 5691 error = nd->nd_repstat; 5692 goto nfsmout; 5693 } 5694 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 5695 *eofp = fxdr_unsigned(int, *tl); 5696 NFSM_STRSIZ(retlen, len); 5697 error = nfsm_mbufuio(nd, uiop, retlen); 5698 nfsmout: 5699 if (nd->nd_mrep != NULL) 5700 mbuf_freem(nd->nd_mrep); 5701 return (error); 5702 } 5703 5704 /* 5705 * The actual write RPC done to a DS. 5706 */ 5707 static int 5708 nfsrpc_writeds(vnode_t vp, struct uio *uiop, int *iomode, int *must_commit, 5709 nfsv4stateid_t *stateidp, struct nfsclds *dsp, uint64_t io_off, int len, 5710 struct nfsfh *fhp, int commit_thru_mds, struct ucred *cred, NFSPROC_T *p) 5711 { 5712 uint32_t *tl; 5713 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 5714 int error, rlen, commit, committed = NFSWRITE_FILESYNC; 5715 int32_t backup; 5716 struct nfsrv_descript nfsd; 5717 struct nfsrv_descript *nd = &nfsd; 5718 struct nfssockreq *nrp; 5719 5720 KASSERT(uiop->uio_iovcnt == 1, ("nfs: writerpc iovcnt > 1")); 5721 nd->nd_mrep = NULL; 5722 nfscl_reqstart(nd, NFSPROC_WRITEDS, nmp, fhp->nfh_fh, fhp->nfh_len, 5723 NULL, &dsp->nfsclds_sess); 5724 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSEQIDZERO); 5725 NFSM_BUILD(tl, uint32_t *, NFSX_HYPER + 2 * NFSX_UNSIGNED); 5726 txdr_hyper(io_off, tl); 5727 tl += 2; 5728 *tl++ = txdr_unsigned(*iomode); 5729 *tl = txdr_unsigned(len); 5730 nfsm_uiombuf(nd, uiop, len); 5731 nrp = dsp->nfsclds_sockp; 5732 if (nrp == NULL) 5733 /* If NULL, use the MDS socket. */ 5734 nrp = &nmp->nm_sockreq; 5735 error = newnfs_request(nd, nmp, NULL, nrp, vp, p, cred, 5736 NFS_PROG, NFS_VER4, NULL, 1, NULL, &dsp->nfsclds_sess); 5737 if (error != 0) 5738 return (error); 5739 if (nd->nd_repstat != 0) { 5740 /* 5741 * In case the rpc gets retried, roll 5742 * the uio fileds changed by nfsm_uiombuf() 5743 * back. 5744 */ 5745 uiop->uio_offset -= len; 5746 uio_uio_resid_add(uiop, len); 5747 uio_iov_base_add(uiop, -len); 5748 uio_iov_len_add(uiop, len); 5749 error = nd->nd_repstat; 5750 } else { 5751 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED + NFSX_VERF); 5752 rlen = fxdr_unsigned(int, *tl++); 5753 if (rlen == 0) { 5754 error = NFSERR_IO; 5755 goto nfsmout; 5756 } else if (rlen < len) { 5757 backup = len - rlen; 5758 uio_iov_base_add(uiop, -(backup)); 5759 uio_iov_len_add(uiop, backup); 5760 uiop->uio_offset -= backup; 5761 uio_uio_resid_add(uiop, backup); 5762 len = rlen; 5763 } 5764 commit = fxdr_unsigned(int, *tl++); 5765 5766 /* 5767 * Return the lowest committment level 5768 * obtained by any of the RPCs. 5769 */ 5770 if (committed == NFSWRITE_FILESYNC) 5771 committed = commit; 5772 else if (committed == NFSWRITE_DATASYNC && 5773 commit == NFSWRITE_UNSTABLE) 5774 committed = commit; 5775 if (commit_thru_mds != 0) { 5776 NFSLOCKMNT(nmp); 5777 if (!NFSHASWRITEVERF(nmp)) { 5778 NFSBCOPY(tl, nmp->nm_verf, NFSX_VERF); 5779 NFSSETWRITEVERF(nmp); 5780 } else if (NFSBCMP(tl, nmp->nm_verf, NFSX_VERF)) { 5781 *must_commit = 1; 5782 NFSBCOPY(tl, nmp->nm_verf, NFSX_VERF); 5783 } 5784 NFSUNLOCKMNT(nmp); 5785 } else { 5786 NFSLOCKDS(dsp); 5787 if ((dsp->nfsclds_flags & NFSCLDS_HASWRITEVERF) == 0) { 5788 NFSBCOPY(tl, dsp->nfsclds_verf, NFSX_VERF); 5789 dsp->nfsclds_flags |= NFSCLDS_HASWRITEVERF; 5790 } else if (NFSBCMP(tl, dsp->nfsclds_verf, NFSX_VERF)) { 5791 *must_commit = 1; 5792 NFSBCOPY(tl, dsp->nfsclds_verf, NFSX_VERF); 5793 } 5794 NFSUNLOCKDS(dsp); 5795 } 5796 } 5797 nfsmout: 5798 if (nd->nd_mrep != NULL) 5799 mbuf_freem(nd->nd_mrep); 5800 *iomode = committed; 5801 if (nd->nd_repstat != 0 && error == 0) 5802 error = nd->nd_repstat; 5803 return (error); 5804 } 5805 5806 /* 5807 * Free up the nfsclds structure. 5808 */ 5809 void 5810 nfscl_freenfsclds(struct nfsclds *dsp) 5811 { 5812 int i; 5813 5814 if (dsp == NULL) 5815 return; 5816 if (dsp->nfsclds_sockp != NULL) { 5817 NFSFREECRED(dsp->nfsclds_sockp->nr_cred); 5818 NFSFREEMUTEX(&dsp->nfsclds_sockp->nr_mtx); 5819 free(dsp->nfsclds_sockp->nr_nam, M_SONAME); 5820 free(dsp->nfsclds_sockp, M_NFSSOCKREQ); 5821 } 5822 NFSFREEMUTEX(&dsp->nfsclds_mtx); 5823 NFSFREEMUTEX(&dsp->nfsclds_sess.nfsess_mtx); 5824 for (i = 0; i < NFSV4_CBSLOTS; i++) { 5825 if (dsp->nfsclds_sess.nfsess_cbslots[i].nfssl_reply != NULL) 5826 m_freem( 5827 dsp->nfsclds_sess.nfsess_cbslots[i].nfssl_reply); 5828 } 5829 free(dsp, M_NFSCLDS); 5830 } 5831 5832 static enum nfsclds_state 5833 nfscl_getsameserver(struct nfsmount *nmp, struct nfsclds *newdsp, 5834 struct nfsclds **retdspp) 5835 { 5836 struct nfsclds *dsp, *cur_dsp; 5837 5838 /* 5839 * Search the list of nfsclds structures for one with the same 5840 * server. 5841 */ 5842 cur_dsp = NULL; 5843 TAILQ_FOREACH(dsp, &nmp->nm_sess, nfsclds_list) { 5844 if (dsp->nfsclds_servownlen == newdsp->nfsclds_servownlen && 5845 dsp->nfsclds_servownlen != 0 && 5846 !NFSBCMP(dsp->nfsclds_serverown, newdsp->nfsclds_serverown, 5847 dsp->nfsclds_servownlen)) { 5848 NFSCL_DEBUG(4, "fnd same fdsp=%p dsp=%p flg=0x%x\n", 5849 TAILQ_FIRST(&nmp->nm_sess), dsp, 5850 dsp->nfsclds_flags); 5851 /* Server major id matches. */ 5852 if ((dsp->nfsclds_flags & NFSCLDS_DS) != 0) { 5853 *retdspp = dsp; 5854 return (NFSDSP_USETHISSESSION); 5855 } 5856 5857 /* 5858 * Note the first match, so it can be used for 5859 * sequence'ing new sessions. 5860 */ 5861 if (cur_dsp == NULL) 5862 cur_dsp = dsp; 5863 } 5864 } 5865 if (cur_dsp != NULL) { 5866 *retdspp = cur_dsp; 5867 return (NFSDSP_SEQTHISSESSION); 5868 } 5869 return (NFSDSP_NOTFOUND); 5870 } 5871 5872 #ifdef notyet 5873 /* 5874 * NFS commit rpc to a DS. 5875 */ 5876 static int 5877 nfsrpc_commitds(vnode_t vp, uint64_t offset, int cnt, struct nfsclds *dsp, 5878 struct nfsfh *fhp, struct ucred *cred, NFSPROC_T *p, void *stuff) 5879 { 5880 uint32_t *tl; 5881 struct nfsrv_descript nfsd, *nd = &nfsd; 5882 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 5883 struct nfssockreq *nrp; 5884 int error; 5885 5886 nfscl_reqstart(nd, NFSPROC_COMMITDS, nmp, fhp->nfh_fh, fhp->nfh_len, 5887 NULL, &dsp->nfsclds_sess); 5888 NFSM_BUILD(tl, uint32_t *, NFSX_HYPER + NFSX_UNSIGNED); 5889 txdr_hyper(offset, tl); 5890 tl += 2; 5891 *tl = txdr_unsigned(cnt); 5892 nrp = dsp->nfsclds_sockp; 5893 if (nrp == NULL) 5894 /* If NULL, use the MDS socket. */ 5895 nrp = &nmp->nm_sockreq; 5896 error = newnfs_request(nd, nmp, NULL, nrp, vp, p, cred, 5897 NFS_PROG, NFS_VER4, NULL, 1, NULL, &dsp->nfsclds_sess); 5898 if (error) 5899 return (error); 5900 if (nd->nd_repstat == 0) { 5901 NFSM_DISSECT(tl, u_int32_t *, NFSX_VERF); 5902 NFSLOCKDS(dsp); 5903 if (NFSBCMP(tl, dsp->nfsclds_verf, NFSX_VERF)) { 5904 NFSBCOPY(tl, dsp->nfsclds_verf, NFSX_VERF); 5905 error = NFSERR_STALEWRITEVERF; 5906 } 5907 NFSUNLOCKDS(dsp); 5908 } 5909 nfsmout: 5910 if (error == 0 && nd->nd_repstat != 0) 5911 error = nd->nd_repstat; 5912 mbuf_freem(nd->nd_mrep); 5913 return (error); 5914 } 5915 #endif 5916 5917