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 nfsmout: 3076 if (nd->nd_mrep != NULL) 3077 mbuf_freem(nd->nd_mrep); 3078 return (error); 3079 } 3080 3081 #ifndef APPLE 3082 /* 3083 * NFS V3 readdir plus RPC. Used in place of nfsrpc_readdir(). 3084 * (Also used for NFS V4 when mount flag set.) 3085 * (ditto above w.r.t. multiple of DIRBLKSIZ, etc.) 3086 */ 3087 APPLESTATIC int 3088 nfsrpc_readdirplus(vnode_t vp, struct uio *uiop, nfsuint64 *cookiep, 3089 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, 3090 int *eofp, void *stuff) 3091 { 3092 int len, left; 3093 struct dirent *dp = NULL; 3094 u_int32_t *tl; 3095 vnode_t newvp = NULLVP; 3096 struct nfsrv_descript nfsd, *nd = &nfsd; 3097 struct nameidata nami, *ndp = &nami; 3098 struct componentname *cnp = &ndp->ni_cnd; 3099 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 3100 struct nfsnode *dnp = VTONFS(vp), *np; 3101 struct nfsvattr nfsva; 3102 struct nfsfh *nfhp; 3103 nfsquad_t cookie, ncookie; 3104 int error = 0, tlen, more_dirs = 1, blksiz = 0, bigenough = 1; 3105 int attrflag, tryformoredirs = 1, eof = 0, gotmnton = 0; 3106 int isdotdot = 0, unlocknewvp = 0; 3107 long dotfileid, dotdotfileid = 0, fileno = 0; 3108 char *cp; 3109 nfsattrbit_t attrbits, dattrbits; 3110 size_t tresid; 3111 u_int32_t *tl2 = NULL, fakefileno = 0xffffffff, rderr; 3112 struct timespec dctime; 3113 3114 KASSERT(uiop->uio_iovcnt == 1 && 3115 (uio_uio_resid(uiop) & (DIRBLKSIZ - 1)) == 0, 3116 ("nfs readdirplusrpc bad uio")); 3117 timespecclear(&dctime); 3118 *attrflagp = 0; 3119 if (eofp != NULL) 3120 *eofp = 0; 3121 ndp->ni_dvp = vp; 3122 nd->nd_mrep = NULL; 3123 cookie.lval[0] = cookiep->nfsuquad[0]; 3124 cookie.lval[1] = cookiep->nfsuquad[1]; 3125 tresid = uio_uio_resid(uiop); 3126 3127 /* 3128 * For NFSv4, first create the "." and ".." entries. 3129 */ 3130 if (NFSHASNFSV4(nmp)) { 3131 NFSGETATTR_ATTRBIT(&dattrbits); 3132 NFSZERO_ATTRBIT(&attrbits); 3133 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_FILEID); 3134 if (NFSISSET_ATTRBIT(&dnp->n_vattr.na_suppattr, 3135 NFSATTRBIT_MOUNTEDONFILEID)) { 3136 NFSSETBIT_ATTRBIT(&attrbits, 3137 NFSATTRBIT_MOUNTEDONFILEID); 3138 gotmnton = 1; 3139 } else { 3140 /* 3141 * Must fake it. Use the fileno, except when the 3142 * fsid is != to that of the directory. For that 3143 * case, generate a fake fileno that is not the same. 3144 */ 3145 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_FSID); 3146 gotmnton = 0; 3147 } 3148 3149 /* 3150 * Joy, oh joy. For V4 we get to hand craft '.' and '..'. 3151 */ 3152 if (uiop->uio_offset == 0) { 3153 NFSCL_REQSTART(nd, NFSPROC_LOOKUPP, vp); 3154 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 3155 *tl++ = txdr_unsigned(NFSV4OP_GETFH); 3156 *tl = txdr_unsigned(NFSV4OP_GETATTR); 3157 (void) nfsrv_putattrbit(nd, &attrbits); 3158 error = nfscl_request(nd, vp, p, cred, stuff); 3159 if (error) 3160 return (error); 3161 dotfileid = 0; /* Fake out the compiler. */ 3162 if ((nd->nd_flag & ND_NOMOREDATA) == 0) { 3163 error = nfsm_loadattr(nd, &nfsva); 3164 if (error != 0) 3165 goto nfsmout; 3166 dctime = nfsva.na_ctime; 3167 dotfileid = nfsva.na_fileid; 3168 } 3169 if (nd->nd_repstat == 0) { 3170 NFSM_DISSECT(tl, u_int32_t *, 5 * NFSX_UNSIGNED); 3171 len = fxdr_unsigned(int, *(tl + 4)); 3172 if (len > 0 && len <= NFSX_V4FHMAX) 3173 error = nfsm_advance(nd, NFSM_RNDUP(len), -1); 3174 else 3175 error = EPERM; 3176 if (!error) { 3177 NFSM_DISSECT(tl, u_int32_t *, 2*NFSX_UNSIGNED); 3178 nfsva.na_mntonfileno = 0xffffffff; 3179 error = nfsv4_loadattr(nd, NULL, &nfsva, NULL, 3180 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0, 3181 NULL, NULL, NULL, p, cred); 3182 if (error) { 3183 dotdotfileid = dotfileid; 3184 } else if (gotmnton) { 3185 if (nfsva.na_mntonfileno != 0xffffffff) 3186 dotdotfileid = nfsva.na_mntonfileno; 3187 else 3188 dotdotfileid = nfsva.na_fileid; 3189 } else if (nfsva.na_filesid[0] == 3190 dnp->n_vattr.na_filesid[0] && 3191 nfsva.na_filesid[1] == 3192 dnp->n_vattr.na_filesid[1]) { 3193 dotdotfileid = nfsva.na_fileid; 3194 } else { 3195 do { 3196 fakefileno--; 3197 } while (fakefileno == 3198 nfsva.na_fileid); 3199 dotdotfileid = fakefileno; 3200 } 3201 } 3202 } else if (nd->nd_repstat == NFSERR_NOENT) { 3203 /* 3204 * Lookupp returns NFSERR_NOENT when we are 3205 * at the root, so just use the current dir. 3206 */ 3207 nd->nd_repstat = 0; 3208 dotdotfileid = dotfileid; 3209 } else { 3210 error = nd->nd_repstat; 3211 } 3212 mbuf_freem(nd->nd_mrep); 3213 if (error) 3214 return (error); 3215 nd->nd_mrep = NULL; 3216 dp = (struct dirent *)uio_iov_base(uiop); 3217 dp->d_type = DT_DIR; 3218 dp->d_fileno = dotfileid; 3219 dp->d_namlen = 1; 3220 dp->d_name[0] = '.'; 3221 dp->d_name[1] = '\0'; 3222 dp->d_reclen = DIRENT_SIZE(dp) + NFSX_HYPER; 3223 /* 3224 * Just make these offset cookie 0. 3225 */ 3226 tl = (u_int32_t *)&dp->d_name[4]; 3227 *tl++ = 0; 3228 *tl = 0; 3229 blksiz += dp->d_reclen; 3230 uio_uio_resid_add(uiop, -(dp->d_reclen)); 3231 uiop->uio_offset += dp->d_reclen; 3232 uio_iov_base_add(uiop, dp->d_reclen); 3233 uio_iov_len_add(uiop, -(dp->d_reclen)); 3234 dp = (struct dirent *)uio_iov_base(uiop); 3235 dp->d_type = DT_DIR; 3236 dp->d_fileno = dotdotfileid; 3237 dp->d_namlen = 2; 3238 dp->d_name[0] = '.'; 3239 dp->d_name[1] = '.'; 3240 dp->d_name[2] = '\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 } 3254 NFSREADDIRPLUS_ATTRBIT(&attrbits); 3255 if (gotmnton) 3256 NFSSETBIT_ATTRBIT(&attrbits, 3257 NFSATTRBIT_MOUNTEDONFILEID); 3258 } 3259 3260 /* 3261 * Loop around doing readdir rpc's of size nm_readdirsize. 3262 * The stopping criteria is EOF or buffer full. 3263 */ 3264 while (more_dirs && bigenough) { 3265 *attrflagp = 0; 3266 NFSCL_REQSTART(nd, NFSPROC_READDIRPLUS, vp); 3267 NFSM_BUILD(tl, u_int32_t *, 6 * NFSX_UNSIGNED); 3268 *tl++ = cookie.lval[0]; 3269 *tl++ = cookie.lval[1]; 3270 if (cookie.qval == 0) { 3271 *tl++ = 0; 3272 *tl++ = 0; 3273 } else { 3274 NFSLOCKNODE(dnp); 3275 *tl++ = dnp->n_cookieverf.nfsuquad[0]; 3276 *tl++ = dnp->n_cookieverf.nfsuquad[1]; 3277 NFSUNLOCKNODE(dnp); 3278 } 3279 *tl++ = txdr_unsigned(nmp->nm_readdirsize); 3280 *tl = txdr_unsigned(nmp->nm_readdirsize); 3281 if (nd->nd_flag & ND_NFSV4) { 3282 (void) nfsrv_putattrbit(nd, &attrbits); 3283 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 3284 *tl = txdr_unsigned(NFSV4OP_GETATTR); 3285 (void) nfsrv_putattrbit(nd, &dattrbits); 3286 } 3287 error = nfscl_request(nd, vp, p, cred, stuff); 3288 if (error) 3289 return (error); 3290 if (nd->nd_flag & ND_NFSV3) 3291 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 3292 if (nd->nd_repstat || error) { 3293 if (!error) 3294 error = nd->nd_repstat; 3295 goto nfsmout; 3296 } 3297 if ((nd->nd_flag & ND_NFSV3) != 0 && *attrflagp != 0) 3298 dctime = nap->na_ctime; 3299 NFSM_DISSECT(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 3300 NFSLOCKNODE(dnp); 3301 dnp->n_cookieverf.nfsuquad[0] = *tl++; 3302 dnp->n_cookieverf.nfsuquad[1] = *tl++; 3303 NFSUNLOCKNODE(dnp); 3304 more_dirs = fxdr_unsigned(int, *tl); 3305 if (!more_dirs) 3306 tryformoredirs = 0; 3307 3308 /* loop thru the dir entries, doctoring them to 4bsd form */ 3309 while (more_dirs && bigenough) { 3310 NFSM_DISSECT(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 3311 if (nd->nd_flag & ND_NFSV4) { 3312 ncookie.lval[0] = *tl++; 3313 ncookie.lval[1] = *tl++; 3314 } else { 3315 fileno = fxdr_unsigned(long, *++tl); 3316 tl++; 3317 } 3318 len = fxdr_unsigned(int, *tl); 3319 if (len <= 0 || len > NFS_MAXNAMLEN) { 3320 error = EBADRPC; 3321 goto nfsmout; 3322 } 3323 tlen = NFSM_RNDUP(len); 3324 if (tlen == len) 3325 tlen += 4; /* To ensure null termination */ 3326 left = DIRBLKSIZ - blksiz; 3327 if ((tlen + DIRHDSIZ + NFSX_HYPER) > left) { 3328 dp->d_reclen += left; 3329 uio_iov_base_add(uiop, left); 3330 uio_iov_len_add(uiop, -(left)); 3331 uio_uio_resid_add(uiop, -(left)); 3332 uiop->uio_offset += left; 3333 blksiz = 0; 3334 } 3335 if ((tlen + DIRHDSIZ + NFSX_HYPER) > uio_uio_resid(uiop)) 3336 bigenough = 0; 3337 if (bigenough) { 3338 dp = (struct dirent *)uio_iov_base(uiop); 3339 dp->d_namlen = len; 3340 dp->d_reclen = tlen + DIRHDSIZ + NFSX_HYPER; 3341 dp->d_type = DT_UNKNOWN; 3342 blksiz += dp->d_reclen; 3343 if (blksiz == DIRBLKSIZ) 3344 blksiz = 0; 3345 uio_uio_resid_add(uiop, -(DIRHDSIZ)); 3346 uiop->uio_offset += DIRHDSIZ; 3347 uio_iov_base_add(uiop, DIRHDSIZ); 3348 uio_iov_len_add(uiop, -(DIRHDSIZ)); 3349 cnp->cn_nameptr = uio_iov_base(uiop); 3350 cnp->cn_namelen = len; 3351 NFSCNHASHZERO(cnp); 3352 error = nfsm_mbufuio(nd, uiop, len); 3353 if (error) 3354 goto nfsmout; 3355 cp = uio_iov_base(uiop); 3356 tlen -= len; 3357 *cp = '\0'; 3358 cp += tlen; /* points to cookie storage */ 3359 tl2 = (u_int32_t *)cp; 3360 if (len == 2 && cnp->cn_nameptr[0] == '.' && 3361 cnp->cn_nameptr[1] == '.') 3362 isdotdot = 1; 3363 else 3364 isdotdot = 0; 3365 uio_iov_base_add(uiop, (tlen + NFSX_HYPER)); 3366 uio_iov_len_add(uiop, -(tlen + NFSX_HYPER)); 3367 uio_uio_resid_add(uiop, -(tlen + NFSX_HYPER)); 3368 uiop->uio_offset += (tlen + NFSX_HYPER); 3369 } else { 3370 error = nfsm_advance(nd, NFSM_RNDUP(len), -1); 3371 if (error) 3372 goto nfsmout; 3373 } 3374 nfhp = NULL; 3375 if (nd->nd_flag & ND_NFSV3) { 3376 NFSM_DISSECT(tl, u_int32_t *, 3*NFSX_UNSIGNED); 3377 ncookie.lval[0] = *tl++; 3378 ncookie.lval[1] = *tl++; 3379 attrflag = fxdr_unsigned(int, *tl); 3380 if (attrflag) { 3381 error = nfsm_loadattr(nd, &nfsva); 3382 if (error) 3383 goto nfsmout; 3384 } 3385 NFSM_DISSECT(tl,u_int32_t *,NFSX_UNSIGNED); 3386 if (*tl) { 3387 error = nfsm_getfh(nd, &nfhp); 3388 if (error) 3389 goto nfsmout; 3390 } 3391 if (!attrflag && nfhp != NULL) { 3392 FREE((caddr_t)nfhp, M_NFSFH); 3393 nfhp = NULL; 3394 } 3395 } else { 3396 rderr = 0; 3397 nfsva.na_mntonfileno = 0xffffffff; 3398 error = nfsv4_loadattr(nd, NULL, &nfsva, &nfhp, 3399 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0, 3400 NULL, NULL, &rderr, p, cred); 3401 if (error) 3402 goto nfsmout; 3403 } 3404 3405 if (bigenough) { 3406 if (nd->nd_flag & ND_NFSV4) { 3407 if (rderr) { 3408 dp->d_fileno = 0; 3409 } else if (gotmnton) { 3410 if (nfsva.na_mntonfileno != 0xffffffff) 3411 dp->d_fileno = nfsva.na_mntonfileno; 3412 else 3413 dp->d_fileno = nfsva.na_fileid; 3414 } else if (nfsva.na_filesid[0] == 3415 dnp->n_vattr.na_filesid[0] && 3416 nfsva.na_filesid[1] == 3417 dnp->n_vattr.na_filesid[1]) { 3418 dp->d_fileno = nfsva.na_fileid; 3419 } else { 3420 do { 3421 fakefileno--; 3422 } while (fakefileno == 3423 nfsva.na_fileid); 3424 dp->d_fileno = fakefileno; 3425 } 3426 } else { 3427 dp->d_fileno = fileno; 3428 } 3429 *tl2++ = cookiep->nfsuquad[0] = cookie.lval[0] = 3430 ncookie.lval[0]; 3431 *tl2 = cookiep->nfsuquad[1] = cookie.lval[1] = 3432 ncookie.lval[1]; 3433 3434 if (nfhp != NULL) { 3435 if (NFSRV_CMPFH(nfhp->nfh_fh, nfhp->nfh_len, 3436 dnp->n_fhp->nfh_fh, dnp->n_fhp->nfh_len)) { 3437 VREF(vp); 3438 newvp = vp; 3439 unlocknewvp = 0; 3440 FREE((caddr_t)nfhp, M_NFSFH); 3441 np = dnp; 3442 } else if (isdotdot != 0) { 3443 /* 3444 * Skip doing a nfscl_nget() call for "..". 3445 * There's a race between acquiring the nfs 3446 * node here and lookups that look for the 3447 * directory being read (in the parent). 3448 * It would try to get a lock on ".." here, 3449 * owning the lock on the directory being 3450 * read. Lookup will hold the lock on ".." 3451 * and try to acquire the lock on the 3452 * directory being read. 3453 * If the directory is unlocked/relocked, 3454 * then there is a LOR with the buflock 3455 * vp is relocked. 3456 */ 3457 free(nfhp, M_NFSFH); 3458 } else { 3459 error = nfscl_nget(vnode_mount(vp), vp, 3460 nfhp, cnp, p, &np, NULL, LK_EXCLUSIVE); 3461 if (!error) { 3462 newvp = NFSTOV(np); 3463 unlocknewvp = 1; 3464 } 3465 } 3466 nfhp = NULL; 3467 if (newvp != NULLVP) { 3468 error = nfscl_loadattrcache(&newvp, 3469 &nfsva, NULL, NULL, 0, 0); 3470 if (error) { 3471 if (unlocknewvp) 3472 vput(newvp); 3473 else 3474 vrele(newvp); 3475 goto nfsmout; 3476 } 3477 dp->d_type = 3478 vtonfs_dtype(np->n_vattr.na_type); 3479 ndp->ni_vp = newvp; 3480 NFSCNHASH(cnp, HASHINIT); 3481 if (cnp->cn_namelen <= NCHNAMLEN && 3482 (newvp->v_type != VDIR || 3483 dctime.tv_sec != 0)) { 3484 cache_enter_time(ndp->ni_dvp, 3485 ndp->ni_vp, cnp, 3486 &nfsva.na_ctime, 3487 newvp->v_type != VDIR ? NULL : 3488 &dctime); 3489 } 3490 if (unlocknewvp) 3491 vput(newvp); 3492 else 3493 vrele(newvp); 3494 newvp = NULLVP; 3495 } 3496 } 3497 } else if (nfhp != NULL) { 3498 FREE((caddr_t)nfhp, M_NFSFH); 3499 } 3500 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 3501 more_dirs = fxdr_unsigned(int, *tl); 3502 } 3503 /* 3504 * If at end of rpc data, get the eof boolean 3505 */ 3506 if (!more_dirs) { 3507 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 3508 eof = fxdr_unsigned(int, *tl); 3509 if (tryformoredirs) 3510 more_dirs = !eof; 3511 if (nd->nd_flag & ND_NFSV4) { 3512 error = nfscl_postop_attr(nd, nap, attrflagp, 3513 stuff); 3514 if (error) 3515 goto nfsmout; 3516 } 3517 } 3518 mbuf_freem(nd->nd_mrep); 3519 nd->nd_mrep = NULL; 3520 } 3521 /* 3522 * Fill last record, iff any, out to a multiple of DIRBLKSIZ 3523 * by increasing d_reclen for the last record. 3524 */ 3525 if (blksiz > 0) { 3526 left = DIRBLKSIZ - blksiz; 3527 dp->d_reclen += left; 3528 uio_iov_base_add(uiop, left); 3529 uio_iov_len_add(uiop, -(left)); 3530 uio_uio_resid_add(uiop, -(left)); 3531 uiop->uio_offset += left; 3532 } 3533 3534 /* 3535 * If returning no data, assume end of file. 3536 * If not bigenough, return not end of file, since you aren't 3537 * returning all the data 3538 * Otherwise, return the eof flag from the server. 3539 */ 3540 if (eofp != NULL) { 3541 if (tresid == uio_uio_resid(uiop)) 3542 *eofp = 1; 3543 else if (!bigenough) 3544 *eofp = 0; 3545 else 3546 *eofp = eof; 3547 } 3548 3549 nfsmout: 3550 if (nd->nd_mrep != NULL) 3551 mbuf_freem(nd->nd_mrep); 3552 return (error); 3553 } 3554 #endif /* !APPLE */ 3555 3556 /* 3557 * Nfs commit rpc 3558 */ 3559 APPLESTATIC int 3560 nfsrpc_commit(vnode_t vp, u_quad_t offset, int cnt, struct ucred *cred, 3561 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff) 3562 { 3563 u_int32_t *tl; 3564 struct nfsrv_descript nfsd, *nd = &nfsd; 3565 nfsattrbit_t attrbits; 3566 int error; 3567 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 3568 3569 *attrflagp = 0; 3570 NFSCL_REQSTART(nd, NFSPROC_COMMIT, vp); 3571 NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 3572 txdr_hyper(offset, tl); 3573 tl += 2; 3574 *tl = txdr_unsigned(cnt); 3575 if (nd->nd_flag & ND_NFSV4) { 3576 /* 3577 * And do a Getattr op. 3578 */ 3579 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 3580 *tl = txdr_unsigned(NFSV4OP_GETATTR); 3581 NFSGETATTR_ATTRBIT(&attrbits); 3582 (void) nfsrv_putattrbit(nd, &attrbits); 3583 } 3584 error = nfscl_request(nd, vp, p, cred, stuff); 3585 if (error) 3586 return (error); 3587 error = nfscl_wcc_data(nd, vp, nap, attrflagp, NULL, stuff); 3588 if (!error && !nd->nd_repstat) { 3589 NFSM_DISSECT(tl, u_int32_t *, NFSX_VERF); 3590 NFSLOCKMNT(nmp); 3591 if (NFSBCMP(nmp->nm_verf, tl, NFSX_VERF)) { 3592 NFSBCOPY(tl, nmp->nm_verf, NFSX_VERF); 3593 nd->nd_repstat = NFSERR_STALEWRITEVERF; 3594 } 3595 NFSUNLOCKMNT(nmp); 3596 if (nd->nd_flag & ND_NFSV4) 3597 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 3598 } 3599 nfsmout: 3600 if (!error && nd->nd_repstat) 3601 error = nd->nd_repstat; 3602 mbuf_freem(nd->nd_mrep); 3603 return (error); 3604 } 3605 3606 /* 3607 * NFS byte range lock rpc. 3608 * (Mostly just calls one of the three lower level RPC routines.) 3609 */ 3610 APPLESTATIC int 3611 nfsrpc_advlock(vnode_t vp, off_t size, int op, struct flock *fl, 3612 int reclaim, struct ucred *cred, NFSPROC_T *p, void *id, int flags) 3613 { 3614 struct nfscllockowner *lp; 3615 struct nfsclclient *clp; 3616 struct nfsfh *nfhp; 3617 struct nfsrv_descript nfsd, *nd = &nfsd; 3618 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 3619 u_int64_t off, len; 3620 off_t start, end; 3621 u_int32_t clidrev = 0; 3622 int error = 0, newone = 0, expireret = 0, retrycnt, donelocally; 3623 int callcnt, dorpc; 3624 3625 /* 3626 * Convert the flock structure into a start and end and do POSIX 3627 * bounds checking. 3628 */ 3629 switch (fl->l_whence) { 3630 case SEEK_SET: 3631 case SEEK_CUR: 3632 /* 3633 * Caller is responsible for adding any necessary offset 3634 * when SEEK_CUR is used. 3635 */ 3636 start = fl->l_start; 3637 off = fl->l_start; 3638 break; 3639 case SEEK_END: 3640 start = size + fl->l_start; 3641 off = size + fl->l_start; 3642 break; 3643 default: 3644 return (EINVAL); 3645 }; 3646 if (start < 0) 3647 return (EINVAL); 3648 if (fl->l_len != 0) { 3649 end = start + fl->l_len - 1; 3650 if (end < start) 3651 return (EINVAL); 3652 } 3653 3654 len = fl->l_len; 3655 if (len == 0) 3656 len = NFS64BITSSET; 3657 retrycnt = 0; 3658 do { 3659 nd->nd_repstat = 0; 3660 if (op == F_GETLK) { 3661 error = nfscl_getcl(vnode_mount(vp), cred, p, 1, &clp); 3662 if (error) 3663 return (error); 3664 error = nfscl_lockt(vp, clp, off, len, fl, p, id, flags); 3665 if (!error) { 3666 clidrev = clp->nfsc_clientidrev; 3667 error = nfsrpc_lockt(nd, vp, clp, off, len, fl, cred, 3668 p, id, flags); 3669 } else if (error == -1) { 3670 error = 0; 3671 } 3672 nfscl_clientrelease(clp); 3673 } else if (op == F_UNLCK && fl->l_type == F_UNLCK) { 3674 /* 3675 * We must loop around for all lockowner cases. 3676 */ 3677 callcnt = 0; 3678 error = nfscl_getcl(vnode_mount(vp), cred, p, 1, &clp); 3679 if (error) 3680 return (error); 3681 do { 3682 error = nfscl_relbytelock(vp, off, len, cred, p, callcnt, 3683 clp, id, flags, &lp, &dorpc); 3684 /* 3685 * If it returns a NULL lp, we're done. 3686 */ 3687 if (lp == NULL) { 3688 if (callcnt == 0) 3689 nfscl_clientrelease(clp); 3690 else 3691 nfscl_releasealllocks(clp, vp, p, id, flags); 3692 return (error); 3693 } 3694 if (nmp->nm_clp != NULL) 3695 clidrev = nmp->nm_clp->nfsc_clientidrev; 3696 else 3697 clidrev = 0; 3698 /* 3699 * If the server doesn't support Posix lock semantics, 3700 * only allow locks on the entire file, since it won't 3701 * handle overlapping byte ranges. 3702 * There might still be a problem when a lock 3703 * upgrade/downgrade (read<->write) occurs, since the 3704 * server "might" expect an unlock first? 3705 */ 3706 if (dorpc && (lp->nfsl_open->nfso_posixlock || 3707 (off == 0 && len == NFS64BITSSET))) { 3708 /* 3709 * Since the lock records will go away, we must 3710 * wait for grace and delay here. 3711 */ 3712 do { 3713 error = nfsrpc_locku(nd, nmp, lp, off, len, 3714 NFSV4LOCKT_READ, cred, p, 0); 3715 if ((nd->nd_repstat == NFSERR_GRACE || 3716 nd->nd_repstat == NFSERR_DELAY) && 3717 error == 0) 3718 (void) nfs_catnap(PZERO, (int)nd->nd_repstat, 3719 "nfs_advlock"); 3720 } while ((nd->nd_repstat == NFSERR_GRACE || 3721 nd->nd_repstat == NFSERR_DELAY) && error == 0); 3722 } 3723 callcnt++; 3724 } while (error == 0 && nd->nd_repstat == 0); 3725 nfscl_releasealllocks(clp, vp, p, id, flags); 3726 } else if (op == F_SETLK) { 3727 error = nfscl_getbytelock(vp, off, len, fl->l_type, cred, p, 3728 NULL, 0, id, flags, NULL, NULL, &lp, &newone, &donelocally); 3729 if (error || donelocally) { 3730 return (error); 3731 } 3732 if (nmp->nm_clp != NULL) 3733 clidrev = nmp->nm_clp->nfsc_clientidrev; 3734 else 3735 clidrev = 0; 3736 nfhp = VTONFS(vp)->n_fhp; 3737 if (!lp->nfsl_open->nfso_posixlock && 3738 (off != 0 || len != NFS64BITSSET)) { 3739 error = EINVAL; 3740 } else { 3741 error = nfsrpc_lock(nd, nmp, vp, nfhp->nfh_fh, 3742 nfhp->nfh_len, lp, newone, reclaim, off, 3743 len, fl->l_type, cred, p, 0); 3744 } 3745 if (!error) 3746 error = nd->nd_repstat; 3747 nfscl_lockrelease(lp, error, newone); 3748 } else { 3749 error = EINVAL; 3750 } 3751 if (!error) 3752 error = nd->nd_repstat; 3753 if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 3754 error == NFSERR_STALEDONTRECOVER || 3755 error == NFSERR_STALECLIENTID || error == NFSERR_DELAY || 3756 error == NFSERR_BADSESSION) { 3757 (void) nfs_catnap(PZERO, error, "nfs_advlock"); 3758 } else if ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) 3759 && clidrev != 0) { 3760 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p); 3761 retrycnt++; 3762 } 3763 } while (error == NFSERR_GRACE || 3764 error == NFSERR_STALECLIENTID || error == NFSERR_DELAY || 3765 error == NFSERR_STALEDONTRECOVER || error == NFSERR_STALESTATEID || 3766 error == NFSERR_BADSESSION || 3767 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) && 3768 expireret == 0 && clidrev != 0 && retrycnt < 4)); 3769 if (error && retrycnt >= 4) 3770 error = EIO; 3771 return (error); 3772 } 3773 3774 /* 3775 * The lower level routine for the LockT case. 3776 */ 3777 APPLESTATIC int 3778 nfsrpc_lockt(struct nfsrv_descript *nd, vnode_t vp, 3779 struct nfsclclient *clp, u_int64_t off, u_int64_t len, struct flock *fl, 3780 struct ucred *cred, NFSPROC_T *p, void *id, int flags) 3781 { 3782 u_int32_t *tl; 3783 int error, type, size; 3784 uint8_t own[NFSV4CL_LOCKNAMELEN + NFSX_V4FHMAX]; 3785 struct nfsnode *np; 3786 struct nfsmount *nmp; 3787 3788 nmp = VFSTONFS(vp->v_mount); 3789 NFSCL_REQSTART(nd, NFSPROC_LOCKT, vp); 3790 NFSM_BUILD(tl, u_int32_t *, 7 * NFSX_UNSIGNED); 3791 if (fl->l_type == F_RDLCK) 3792 *tl++ = txdr_unsigned(NFSV4LOCKT_READ); 3793 else 3794 *tl++ = txdr_unsigned(NFSV4LOCKT_WRITE); 3795 txdr_hyper(off, tl); 3796 tl += 2; 3797 txdr_hyper(len, tl); 3798 tl += 2; 3799 *tl++ = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[0]; 3800 *tl = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[1]; 3801 nfscl_filllockowner(id, own, flags); 3802 np = VTONFS(vp); 3803 NFSBCOPY(np->n_fhp->nfh_fh, &own[NFSV4CL_LOCKNAMELEN], 3804 np->n_fhp->nfh_len); 3805 (void)nfsm_strtom(nd, own, NFSV4CL_LOCKNAMELEN + np->n_fhp->nfh_len); 3806 error = nfscl_request(nd, vp, p, cred, NULL); 3807 if (error) 3808 return (error); 3809 if (nd->nd_repstat == 0) { 3810 fl->l_type = F_UNLCK; 3811 } else if (nd->nd_repstat == NFSERR_DENIED) { 3812 nd->nd_repstat = 0; 3813 fl->l_whence = SEEK_SET; 3814 NFSM_DISSECT(tl, u_int32_t *, 8 * NFSX_UNSIGNED); 3815 fl->l_start = fxdr_hyper(tl); 3816 tl += 2; 3817 len = fxdr_hyper(tl); 3818 tl += 2; 3819 if (len == NFS64BITSSET) 3820 fl->l_len = 0; 3821 else 3822 fl->l_len = len; 3823 type = fxdr_unsigned(int, *tl++); 3824 if (type == NFSV4LOCKT_WRITE) 3825 fl->l_type = F_WRLCK; 3826 else 3827 fl->l_type = F_RDLCK; 3828 /* 3829 * XXX For now, I have no idea what to do with the 3830 * conflicting lock_owner, so I'll just set the pid == 0 3831 * and skip over the lock_owner. 3832 */ 3833 fl->l_pid = (pid_t)0; 3834 tl += 2; 3835 size = fxdr_unsigned(int, *tl); 3836 if (size < 0 || size > NFSV4_OPAQUELIMIT) 3837 error = EBADRPC; 3838 if (!error) 3839 error = nfsm_advance(nd, NFSM_RNDUP(size), -1); 3840 } else if (nd->nd_repstat == NFSERR_STALECLIENTID || 3841 nd->nd_repstat == NFSERR_BADSESSION) 3842 nfscl_initiate_recovery(clp); 3843 nfsmout: 3844 mbuf_freem(nd->nd_mrep); 3845 return (error); 3846 } 3847 3848 /* 3849 * Lower level function that performs the LockU RPC. 3850 */ 3851 static int 3852 nfsrpc_locku(struct nfsrv_descript *nd, struct nfsmount *nmp, 3853 struct nfscllockowner *lp, u_int64_t off, u_int64_t len, 3854 u_int32_t type, struct ucred *cred, NFSPROC_T *p, int syscred) 3855 { 3856 u_int32_t *tl; 3857 int error; 3858 3859 nfscl_reqstart(nd, NFSPROC_LOCKU, nmp, lp->nfsl_open->nfso_fh, 3860 lp->nfsl_open->nfso_fhlen, NULL, NULL); 3861 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID + 6 * NFSX_UNSIGNED); 3862 *tl++ = txdr_unsigned(type); 3863 *tl = txdr_unsigned(lp->nfsl_seqid); 3864 if (nfstest_outofseq && 3865 (arc4random() % nfstest_outofseq) == 0) 3866 *tl = txdr_unsigned(lp->nfsl_seqid + 1); 3867 tl++; 3868 if (NFSHASNFSV4N(nmp)) 3869 *tl++ = 0; 3870 else 3871 *tl++ = lp->nfsl_stateid.seqid; 3872 *tl++ = lp->nfsl_stateid.other[0]; 3873 *tl++ = lp->nfsl_stateid.other[1]; 3874 *tl++ = lp->nfsl_stateid.other[2]; 3875 txdr_hyper(off, tl); 3876 tl += 2; 3877 txdr_hyper(len, tl); 3878 if (syscred) 3879 nd->nd_flag |= ND_USEGSSNAME; 3880 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 3881 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 3882 NFSCL_INCRSEQID(lp->nfsl_seqid, nd); 3883 if (error) 3884 return (error); 3885 if (nd->nd_repstat == 0) { 3886 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID); 3887 lp->nfsl_stateid.seqid = *tl++; 3888 lp->nfsl_stateid.other[0] = *tl++; 3889 lp->nfsl_stateid.other[1] = *tl++; 3890 lp->nfsl_stateid.other[2] = *tl; 3891 } else if (nd->nd_repstat == NFSERR_STALESTATEID || 3892 nd->nd_repstat == NFSERR_BADSESSION) 3893 nfscl_initiate_recovery(lp->nfsl_open->nfso_own->nfsow_clp); 3894 nfsmout: 3895 mbuf_freem(nd->nd_mrep); 3896 return (error); 3897 } 3898 3899 /* 3900 * The actual Lock RPC. 3901 */ 3902 APPLESTATIC int 3903 nfsrpc_lock(struct nfsrv_descript *nd, struct nfsmount *nmp, vnode_t vp, 3904 u_int8_t *nfhp, int fhlen, struct nfscllockowner *lp, int newone, 3905 int reclaim, u_int64_t off, u_int64_t len, short type, struct ucred *cred, 3906 NFSPROC_T *p, int syscred) 3907 { 3908 u_int32_t *tl; 3909 int error, size; 3910 uint8_t own[NFSV4CL_LOCKNAMELEN + NFSX_V4FHMAX]; 3911 3912 nfscl_reqstart(nd, NFSPROC_LOCK, nmp, nfhp, fhlen, NULL, NULL); 3913 NFSM_BUILD(tl, u_int32_t *, 7 * NFSX_UNSIGNED); 3914 if (type == F_RDLCK) 3915 *tl++ = txdr_unsigned(NFSV4LOCKT_READ); 3916 else 3917 *tl++ = txdr_unsigned(NFSV4LOCKT_WRITE); 3918 *tl++ = txdr_unsigned(reclaim); 3919 txdr_hyper(off, tl); 3920 tl += 2; 3921 txdr_hyper(len, tl); 3922 tl += 2; 3923 if (newone) { 3924 *tl = newnfs_true; 3925 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID + 3926 2 * NFSX_UNSIGNED + NFSX_HYPER); 3927 *tl++ = txdr_unsigned(lp->nfsl_open->nfso_own->nfsow_seqid); 3928 if (NFSHASNFSV4N(nmp)) 3929 *tl++ = 0; 3930 else 3931 *tl++ = lp->nfsl_open->nfso_stateid.seqid; 3932 *tl++ = lp->nfsl_open->nfso_stateid.other[0]; 3933 *tl++ = lp->nfsl_open->nfso_stateid.other[1]; 3934 *tl++ = lp->nfsl_open->nfso_stateid.other[2]; 3935 *tl++ = txdr_unsigned(lp->nfsl_seqid); 3936 *tl++ = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[0]; 3937 *tl = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[1]; 3938 NFSBCOPY(lp->nfsl_owner, own, NFSV4CL_LOCKNAMELEN); 3939 NFSBCOPY(nfhp, &own[NFSV4CL_LOCKNAMELEN], fhlen); 3940 (void)nfsm_strtom(nd, own, NFSV4CL_LOCKNAMELEN + fhlen); 3941 } else { 3942 *tl = newnfs_false; 3943 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID + NFSX_UNSIGNED); 3944 if (NFSHASNFSV4N(nmp)) 3945 *tl++ = 0; 3946 else 3947 *tl++ = lp->nfsl_stateid.seqid; 3948 *tl++ = lp->nfsl_stateid.other[0]; 3949 *tl++ = lp->nfsl_stateid.other[1]; 3950 *tl++ = lp->nfsl_stateid.other[2]; 3951 *tl = txdr_unsigned(lp->nfsl_seqid); 3952 if (nfstest_outofseq && 3953 (arc4random() % nfstest_outofseq) == 0) 3954 *tl = txdr_unsigned(lp->nfsl_seqid + 1); 3955 } 3956 if (syscred) 3957 nd->nd_flag |= ND_USEGSSNAME; 3958 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, vp, p, cred, 3959 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 3960 if (error) 3961 return (error); 3962 if (newone) 3963 NFSCL_INCRSEQID(lp->nfsl_open->nfso_own->nfsow_seqid, nd); 3964 NFSCL_INCRSEQID(lp->nfsl_seqid, nd); 3965 if (nd->nd_repstat == 0) { 3966 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID); 3967 lp->nfsl_stateid.seqid = *tl++; 3968 lp->nfsl_stateid.other[0] = *tl++; 3969 lp->nfsl_stateid.other[1] = *tl++; 3970 lp->nfsl_stateid.other[2] = *tl; 3971 } else if (nd->nd_repstat == NFSERR_DENIED) { 3972 NFSM_DISSECT(tl, u_int32_t *, 8 * NFSX_UNSIGNED); 3973 size = fxdr_unsigned(int, *(tl + 7)); 3974 if (size < 0 || size > NFSV4_OPAQUELIMIT) 3975 error = EBADRPC; 3976 if (!error) 3977 error = nfsm_advance(nd, NFSM_RNDUP(size), -1); 3978 } else if (nd->nd_repstat == NFSERR_STALESTATEID || 3979 nd->nd_repstat == NFSERR_BADSESSION) 3980 nfscl_initiate_recovery(lp->nfsl_open->nfso_own->nfsow_clp); 3981 nfsmout: 3982 mbuf_freem(nd->nd_mrep); 3983 return (error); 3984 } 3985 3986 /* 3987 * nfs statfs rpc 3988 * (always called with the vp for the mount point) 3989 */ 3990 APPLESTATIC int 3991 nfsrpc_statfs(vnode_t vp, struct nfsstatfs *sbp, struct nfsfsinfo *fsp, 3992 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, 3993 void *stuff) 3994 { 3995 u_int32_t *tl = NULL; 3996 struct nfsrv_descript nfsd, *nd = &nfsd; 3997 struct nfsmount *nmp; 3998 nfsattrbit_t attrbits; 3999 int error; 4000 4001 *attrflagp = 0; 4002 nmp = VFSTONFS(vnode_mount(vp)); 4003 if (NFSHASNFSV4(nmp)) { 4004 /* 4005 * For V4, you actually do a getattr. 4006 */ 4007 NFSCL_REQSTART(nd, NFSPROC_GETATTR, vp); 4008 NFSSTATFS_GETATTRBIT(&attrbits); 4009 (void) nfsrv_putattrbit(nd, &attrbits); 4010 nd->nd_flag |= ND_USEGSSNAME; 4011 error = nfscl_request(nd, vp, p, cred, stuff); 4012 if (error) 4013 return (error); 4014 if (nd->nd_repstat == 0) { 4015 error = nfsv4_loadattr(nd, NULL, nap, NULL, NULL, 0, 4016 NULL, NULL, sbp, fsp, NULL, 0, NULL, NULL, NULL, p, 4017 cred); 4018 if (!error) { 4019 nmp->nm_fsid[0] = nap->na_filesid[0]; 4020 nmp->nm_fsid[1] = nap->na_filesid[1]; 4021 NFSSETHASSETFSID(nmp); 4022 *attrflagp = 1; 4023 } 4024 } else { 4025 error = nd->nd_repstat; 4026 } 4027 if (error) 4028 goto nfsmout; 4029 } else { 4030 NFSCL_REQSTART(nd, NFSPROC_FSSTAT, vp); 4031 error = nfscl_request(nd, vp, p, cred, stuff); 4032 if (error) 4033 return (error); 4034 if (nd->nd_flag & ND_NFSV3) { 4035 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 4036 if (error) 4037 goto nfsmout; 4038 } 4039 if (nd->nd_repstat) { 4040 error = nd->nd_repstat; 4041 goto nfsmout; 4042 } 4043 NFSM_DISSECT(tl, u_int32_t *, 4044 NFSX_STATFS(nd->nd_flag & ND_NFSV3)); 4045 } 4046 if (NFSHASNFSV3(nmp)) { 4047 sbp->sf_tbytes = fxdr_hyper(tl); tl += 2; 4048 sbp->sf_fbytes = fxdr_hyper(tl); tl += 2; 4049 sbp->sf_abytes = fxdr_hyper(tl); tl += 2; 4050 sbp->sf_tfiles = fxdr_hyper(tl); tl += 2; 4051 sbp->sf_ffiles = fxdr_hyper(tl); tl += 2; 4052 sbp->sf_afiles = fxdr_hyper(tl); tl += 2; 4053 sbp->sf_invarsec = fxdr_unsigned(u_int32_t, *tl); 4054 } else if (NFSHASNFSV4(nmp) == 0) { 4055 sbp->sf_tsize = fxdr_unsigned(u_int32_t, *tl++); 4056 sbp->sf_bsize = fxdr_unsigned(u_int32_t, *tl++); 4057 sbp->sf_blocks = fxdr_unsigned(u_int32_t, *tl++); 4058 sbp->sf_bfree = fxdr_unsigned(u_int32_t, *tl++); 4059 sbp->sf_bavail = fxdr_unsigned(u_int32_t, *tl); 4060 } 4061 nfsmout: 4062 mbuf_freem(nd->nd_mrep); 4063 return (error); 4064 } 4065 4066 /* 4067 * nfs pathconf rpc 4068 */ 4069 APPLESTATIC int 4070 nfsrpc_pathconf(vnode_t vp, struct nfsv3_pathconf *pc, 4071 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, 4072 void *stuff) 4073 { 4074 struct nfsrv_descript nfsd, *nd = &nfsd; 4075 struct nfsmount *nmp; 4076 u_int32_t *tl; 4077 nfsattrbit_t attrbits; 4078 int error; 4079 4080 *attrflagp = 0; 4081 nmp = VFSTONFS(vnode_mount(vp)); 4082 if (NFSHASNFSV4(nmp)) { 4083 /* 4084 * For V4, you actually do a getattr. 4085 */ 4086 NFSCL_REQSTART(nd, NFSPROC_GETATTR, vp); 4087 NFSPATHCONF_GETATTRBIT(&attrbits); 4088 (void) nfsrv_putattrbit(nd, &attrbits); 4089 nd->nd_flag |= ND_USEGSSNAME; 4090 error = nfscl_request(nd, vp, p, cred, stuff); 4091 if (error) 4092 return (error); 4093 if (nd->nd_repstat == 0) { 4094 error = nfsv4_loadattr(nd, NULL, nap, NULL, NULL, 0, 4095 pc, NULL, NULL, NULL, NULL, 0, NULL, NULL, NULL, p, 4096 cred); 4097 if (!error) 4098 *attrflagp = 1; 4099 } else { 4100 error = nd->nd_repstat; 4101 } 4102 } else { 4103 NFSCL_REQSTART(nd, NFSPROC_PATHCONF, vp); 4104 error = nfscl_request(nd, vp, p, cred, stuff); 4105 if (error) 4106 return (error); 4107 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 4108 if (nd->nd_repstat && !error) 4109 error = nd->nd_repstat; 4110 if (!error) { 4111 NFSM_DISSECT(tl, u_int32_t *, NFSX_V3PATHCONF); 4112 pc->pc_linkmax = fxdr_unsigned(u_int32_t, *tl++); 4113 pc->pc_namemax = fxdr_unsigned(u_int32_t, *tl++); 4114 pc->pc_notrunc = fxdr_unsigned(u_int32_t, *tl++); 4115 pc->pc_chownrestricted = 4116 fxdr_unsigned(u_int32_t, *tl++); 4117 pc->pc_caseinsensitive = 4118 fxdr_unsigned(u_int32_t, *tl++); 4119 pc->pc_casepreserving = fxdr_unsigned(u_int32_t, *tl); 4120 } 4121 } 4122 nfsmout: 4123 mbuf_freem(nd->nd_mrep); 4124 return (error); 4125 } 4126 4127 /* 4128 * nfs version 3 fsinfo rpc call 4129 */ 4130 APPLESTATIC int 4131 nfsrpc_fsinfo(vnode_t vp, struct nfsfsinfo *fsp, struct ucred *cred, 4132 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff) 4133 { 4134 u_int32_t *tl; 4135 struct nfsrv_descript nfsd, *nd = &nfsd; 4136 int error; 4137 4138 *attrflagp = 0; 4139 NFSCL_REQSTART(nd, NFSPROC_FSINFO, vp); 4140 error = nfscl_request(nd, vp, p, cred, stuff); 4141 if (error) 4142 return (error); 4143 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 4144 if (nd->nd_repstat && !error) 4145 error = nd->nd_repstat; 4146 if (!error) { 4147 NFSM_DISSECT(tl, u_int32_t *, NFSX_V3FSINFO); 4148 fsp->fs_rtmax = fxdr_unsigned(u_int32_t, *tl++); 4149 fsp->fs_rtpref = fxdr_unsigned(u_int32_t, *tl++); 4150 fsp->fs_rtmult = fxdr_unsigned(u_int32_t, *tl++); 4151 fsp->fs_wtmax = fxdr_unsigned(u_int32_t, *tl++); 4152 fsp->fs_wtpref = fxdr_unsigned(u_int32_t, *tl++); 4153 fsp->fs_wtmult = fxdr_unsigned(u_int32_t, *tl++); 4154 fsp->fs_dtpref = fxdr_unsigned(u_int32_t, *tl++); 4155 fsp->fs_maxfilesize = fxdr_hyper(tl); 4156 tl += 2; 4157 fxdr_nfsv3time(tl, &fsp->fs_timedelta); 4158 tl += 2; 4159 fsp->fs_properties = fxdr_unsigned(u_int32_t, *tl); 4160 } 4161 nfsmout: 4162 mbuf_freem(nd->nd_mrep); 4163 return (error); 4164 } 4165 4166 /* 4167 * This function performs the Renew RPC. 4168 */ 4169 APPLESTATIC int 4170 nfsrpc_renew(struct nfsclclient *clp, struct nfsclds *dsp, struct ucred *cred, 4171 NFSPROC_T *p) 4172 { 4173 u_int32_t *tl; 4174 struct nfsrv_descript nfsd; 4175 struct nfsrv_descript *nd = &nfsd; 4176 struct nfsmount *nmp; 4177 int error; 4178 struct nfssockreq *nrp; 4179 4180 nmp = clp->nfsc_nmp; 4181 if (nmp == NULL) 4182 return (0); 4183 nfscl_reqstart(nd, NFSPROC_RENEW, nmp, NULL, 0, NULL, 4184 &dsp->nfsclds_sess); 4185 if (!NFSHASNFSV4N(nmp)) { 4186 /* NFSv4.1 just uses a Sequence Op and not a Renew. */ 4187 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 4188 *tl++ = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[0]; 4189 *tl = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[1]; 4190 } 4191 nrp = dsp->nfsclds_sockp; 4192 if (nrp == NULL) 4193 /* If NULL, use the MDS socket. */ 4194 nrp = &nmp->nm_sockreq; 4195 nd->nd_flag |= ND_USEGSSNAME; 4196 error = newnfs_request(nd, nmp, NULL, nrp, NULL, p, cred, 4197 NFS_PROG, NFS_VER4, NULL, 1, NULL, &dsp->nfsclds_sess); 4198 if (error) 4199 return (error); 4200 error = nd->nd_repstat; 4201 mbuf_freem(nd->nd_mrep); 4202 return (error); 4203 } 4204 4205 /* 4206 * This function performs the Releaselockowner RPC. 4207 */ 4208 APPLESTATIC int 4209 nfsrpc_rellockown(struct nfsmount *nmp, struct nfscllockowner *lp, 4210 uint8_t *fh, int fhlen, struct ucred *cred, NFSPROC_T *p) 4211 { 4212 struct nfsrv_descript nfsd, *nd = &nfsd; 4213 u_int32_t *tl; 4214 int error; 4215 uint8_t own[NFSV4CL_LOCKNAMELEN + NFSX_V4FHMAX]; 4216 4217 if (NFSHASNFSV4N(nmp)) { 4218 /* For NFSv4.1, do a FreeStateID. */ 4219 nfscl_reqstart(nd, NFSPROC_FREESTATEID, nmp, NULL, 0, NULL, 4220 NULL); 4221 nfsm_stateidtom(nd, &lp->nfsl_stateid, NFSSTATEID_PUTSTATEID); 4222 } else { 4223 nfscl_reqstart(nd, NFSPROC_RELEASELCKOWN, nmp, NULL, 0, NULL, 4224 NULL); 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 NFSBCOPY(lp->nfsl_owner, own, NFSV4CL_LOCKNAMELEN); 4229 NFSBCOPY(fh, &own[NFSV4CL_LOCKNAMELEN], fhlen); 4230 (void)nfsm_strtom(nd, own, NFSV4CL_LOCKNAMELEN + fhlen); 4231 } 4232 nd->nd_flag |= ND_USEGSSNAME; 4233 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 4234 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4235 if (error) 4236 return (error); 4237 error = nd->nd_repstat; 4238 mbuf_freem(nd->nd_mrep); 4239 return (error); 4240 } 4241 4242 /* 4243 * This function performs the Compound to get the mount pt FH. 4244 */ 4245 APPLESTATIC int 4246 nfsrpc_getdirpath(struct nfsmount *nmp, u_char *dirpath, struct ucred *cred, 4247 NFSPROC_T *p) 4248 { 4249 u_int32_t *tl; 4250 struct nfsrv_descript nfsd; 4251 struct nfsrv_descript *nd = &nfsd; 4252 u_char *cp, *cp2; 4253 int error, cnt, len, setnil; 4254 u_int32_t *opcntp; 4255 4256 nfscl_reqstart(nd, NFSPROC_PUTROOTFH, nmp, NULL, 0, &opcntp, NULL); 4257 cp = dirpath; 4258 cnt = 0; 4259 do { 4260 setnil = 0; 4261 while (*cp == '/') 4262 cp++; 4263 cp2 = cp; 4264 while (*cp2 != '\0' && *cp2 != '/') 4265 cp2++; 4266 if (*cp2 == '/') { 4267 setnil = 1; 4268 *cp2 = '\0'; 4269 } 4270 if (cp2 != cp) { 4271 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 4272 *tl = txdr_unsigned(NFSV4OP_LOOKUP); 4273 nfsm_strtom(nd, cp, strlen(cp)); 4274 cnt++; 4275 } 4276 if (setnil) 4277 *cp2++ = '/'; 4278 cp = cp2; 4279 } while (*cp != '\0'); 4280 if (NFSHASNFSV4N(nmp)) 4281 /* Has a Sequence Op done by nfscl_reqstart(). */ 4282 *opcntp = txdr_unsigned(3 + cnt); 4283 else 4284 *opcntp = txdr_unsigned(2 + cnt); 4285 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 4286 *tl = txdr_unsigned(NFSV4OP_GETFH); 4287 nd->nd_flag |= ND_USEGSSNAME; 4288 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 4289 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4290 if (error) 4291 return (error); 4292 if (nd->nd_repstat == 0) { 4293 NFSM_DISSECT(tl, u_int32_t *, (3 + 2 * cnt) * NFSX_UNSIGNED); 4294 tl += (2 + 2 * cnt); 4295 if ((len = fxdr_unsigned(int, *tl)) <= 0 || 4296 len > NFSX_FHMAX) { 4297 nd->nd_repstat = NFSERR_BADXDR; 4298 } else { 4299 nd->nd_repstat = nfsrv_mtostr(nd, nmp->nm_fh, len); 4300 if (nd->nd_repstat == 0) 4301 nmp->nm_fhsize = len; 4302 } 4303 } 4304 error = nd->nd_repstat; 4305 nfsmout: 4306 mbuf_freem(nd->nd_mrep); 4307 return (error); 4308 } 4309 4310 /* 4311 * This function performs the Delegreturn RPC. 4312 */ 4313 APPLESTATIC int 4314 nfsrpc_delegreturn(struct nfscldeleg *dp, struct ucred *cred, 4315 struct nfsmount *nmp, NFSPROC_T *p, int syscred) 4316 { 4317 u_int32_t *tl; 4318 struct nfsrv_descript nfsd; 4319 struct nfsrv_descript *nd = &nfsd; 4320 int error; 4321 4322 nfscl_reqstart(nd, NFSPROC_DELEGRETURN, nmp, dp->nfsdl_fh, 4323 dp->nfsdl_fhlen, NULL, NULL); 4324 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID); 4325 if (NFSHASNFSV4N(nmp)) 4326 *tl++ = 0; 4327 else 4328 *tl++ = dp->nfsdl_stateid.seqid; 4329 *tl++ = dp->nfsdl_stateid.other[0]; 4330 *tl++ = dp->nfsdl_stateid.other[1]; 4331 *tl = dp->nfsdl_stateid.other[2]; 4332 if (syscred) 4333 nd->nd_flag |= ND_USEGSSNAME; 4334 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 4335 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4336 if (error) 4337 return (error); 4338 error = nd->nd_repstat; 4339 mbuf_freem(nd->nd_mrep); 4340 return (error); 4341 } 4342 4343 /* 4344 * nfs getacl call. 4345 */ 4346 APPLESTATIC int 4347 nfsrpc_getacl(vnode_t vp, struct ucred *cred, NFSPROC_T *p, 4348 struct acl *aclp, void *stuff) 4349 { 4350 struct nfsrv_descript nfsd, *nd = &nfsd; 4351 int error; 4352 nfsattrbit_t attrbits; 4353 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 4354 4355 if (nfsrv_useacl == 0 || !NFSHASNFSV4(nmp)) 4356 return (EOPNOTSUPP); 4357 NFSCL_REQSTART(nd, NFSPROC_GETACL, vp); 4358 NFSZERO_ATTRBIT(&attrbits); 4359 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_ACL); 4360 (void) nfsrv_putattrbit(nd, &attrbits); 4361 error = nfscl_request(nd, vp, p, cred, stuff); 4362 if (error) 4363 return (error); 4364 if (!nd->nd_repstat) 4365 error = nfsv4_loadattr(nd, vp, NULL, NULL, NULL, 0, NULL, 4366 NULL, NULL, NULL, aclp, 0, NULL, NULL, NULL, p, cred); 4367 else 4368 error = nd->nd_repstat; 4369 mbuf_freem(nd->nd_mrep); 4370 return (error); 4371 } 4372 4373 /* 4374 * nfs setacl call. 4375 */ 4376 APPLESTATIC int 4377 nfsrpc_setacl(vnode_t vp, struct ucred *cred, NFSPROC_T *p, 4378 struct acl *aclp, void *stuff) 4379 { 4380 int error; 4381 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 4382 4383 if (nfsrv_useacl == 0 || !NFSHASNFSV4(nmp)) 4384 return (EOPNOTSUPP); 4385 error = nfsrpc_setattr(vp, NULL, aclp, cred, p, NULL, NULL, stuff); 4386 return (error); 4387 } 4388 4389 /* 4390 * nfs setacl call. 4391 */ 4392 static int 4393 nfsrpc_setaclrpc(vnode_t vp, struct ucred *cred, NFSPROC_T *p, 4394 struct acl *aclp, nfsv4stateid_t *stateidp, void *stuff) 4395 { 4396 struct nfsrv_descript nfsd, *nd = &nfsd; 4397 int error; 4398 nfsattrbit_t attrbits; 4399 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 4400 4401 if (!NFSHASNFSV4(nmp)) 4402 return (EOPNOTSUPP); 4403 NFSCL_REQSTART(nd, NFSPROC_SETACL, vp); 4404 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID); 4405 NFSZERO_ATTRBIT(&attrbits); 4406 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_ACL); 4407 (void) nfsv4_fillattr(nd, vnode_mount(vp), vp, aclp, NULL, NULL, 0, 4408 &attrbits, NULL, NULL, 0, 0, 0, 0, (uint64_t)0); 4409 error = nfscl_request(nd, vp, p, cred, stuff); 4410 if (error) 4411 return (error); 4412 /* Don't care about the pre/postop attributes */ 4413 mbuf_freem(nd->nd_mrep); 4414 return (nd->nd_repstat); 4415 } 4416 4417 /* 4418 * Do the NFSv4.1 Exchange ID. 4419 */ 4420 int 4421 nfsrpc_exchangeid(struct nfsmount *nmp, struct nfsclclient *clp, 4422 struct nfssockreq *nrp, uint32_t exchflags, struct nfsclds **dspp, 4423 struct ucred *cred, NFSPROC_T *p) 4424 { 4425 uint32_t *tl, v41flags; 4426 struct nfsrv_descript nfsd; 4427 struct nfsrv_descript *nd = &nfsd; 4428 struct nfsclds *dsp; 4429 struct timespec verstime; 4430 int error, len; 4431 4432 *dspp = NULL; 4433 nfscl_reqstart(nd, NFSPROC_EXCHANGEID, nmp, NULL, 0, NULL, NULL); 4434 NFSM_BUILD(tl, uint32_t *, 2 * NFSX_UNSIGNED); 4435 *tl++ = txdr_unsigned(nfsboottime.tv_sec); /* Client owner */ 4436 *tl = txdr_unsigned(clp->nfsc_rev); 4437 (void) nfsm_strtom(nd, clp->nfsc_id, clp->nfsc_idlen); 4438 4439 NFSM_BUILD(tl, uint32_t *, 3 * NFSX_UNSIGNED); 4440 *tl++ = txdr_unsigned(exchflags); 4441 *tl++ = txdr_unsigned(NFSV4EXCH_SP4NONE); 4442 4443 /* Set the implementation id4 */ 4444 *tl = txdr_unsigned(1); 4445 (void) nfsm_strtom(nd, "freebsd.org", strlen("freebsd.org")); 4446 (void) nfsm_strtom(nd, version, strlen(version)); 4447 NFSM_BUILD(tl, uint32_t *, NFSX_V4TIME); 4448 verstime.tv_sec = 1293840000; /* Jan 1, 2011 */ 4449 verstime.tv_nsec = 0; 4450 txdr_nfsv4time(&verstime, tl); 4451 nd->nd_flag |= ND_USEGSSNAME; 4452 error = newnfs_request(nd, nmp, NULL, nrp, NULL, p, cred, 4453 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4454 NFSCL_DEBUG(1, "exchangeid err=%d reps=%d\n", error, 4455 (int)nd->nd_repstat); 4456 if (error != 0) 4457 return (error); 4458 if (nd->nd_repstat == 0) { 4459 NFSM_DISSECT(tl, uint32_t *, 6 * NFSX_UNSIGNED + NFSX_HYPER); 4460 len = fxdr_unsigned(int, *(tl + 7)); 4461 if (len < 0 || len > NFSV4_OPAQUELIMIT) { 4462 error = NFSERR_BADXDR; 4463 goto nfsmout; 4464 } 4465 dsp = malloc(sizeof(struct nfsclds) + len, M_NFSCLDS, 4466 M_WAITOK | M_ZERO); 4467 dsp->nfsclds_expire = NFSD_MONOSEC + clp->nfsc_renew; 4468 dsp->nfsclds_servownlen = len; 4469 dsp->nfsclds_sess.nfsess_clientid.lval[0] = *tl++; 4470 dsp->nfsclds_sess.nfsess_clientid.lval[1] = *tl++; 4471 dsp->nfsclds_sess.nfsess_sequenceid = 4472 fxdr_unsigned(uint32_t, *tl++); 4473 v41flags = fxdr_unsigned(uint32_t, *tl); 4474 if ((v41flags & NFSV4EXCH_USEPNFSMDS) != 0 && 4475 NFSHASPNFSOPT(nmp)) { 4476 NFSCL_DEBUG(1, "set PNFS\n"); 4477 NFSLOCKMNT(nmp); 4478 nmp->nm_state |= NFSSTA_PNFS; 4479 NFSUNLOCKMNT(nmp); 4480 dsp->nfsclds_flags |= NFSCLDS_MDS; 4481 } 4482 if ((v41flags & NFSV4EXCH_USEPNFSDS) != 0) 4483 dsp->nfsclds_flags |= NFSCLDS_DS; 4484 if (len > 0) 4485 nd->nd_repstat = nfsrv_mtostr(nd, 4486 dsp->nfsclds_serverown, len); 4487 if (nd->nd_repstat == 0) { 4488 mtx_init(&dsp->nfsclds_mtx, "nfsds", NULL, MTX_DEF); 4489 mtx_init(&dsp->nfsclds_sess.nfsess_mtx, "nfssession", 4490 NULL, MTX_DEF); 4491 nfscl_initsessionslots(&dsp->nfsclds_sess); 4492 *dspp = dsp; 4493 } else 4494 free(dsp, M_NFSCLDS); 4495 } 4496 error = nd->nd_repstat; 4497 nfsmout: 4498 mbuf_freem(nd->nd_mrep); 4499 return (error); 4500 } 4501 4502 /* 4503 * Do the NFSv4.1 Create Session. 4504 */ 4505 int 4506 nfsrpc_createsession(struct nfsmount *nmp, struct nfsclsession *sep, 4507 struct nfssockreq *nrp, uint32_t sequenceid, int mds, struct ucred *cred, 4508 NFSPROC_T *p) 4509 { 4510 uint32_t crflags, *tl; 4511 struct nfsrv_descript nfsd; 4512 struct nfsrv_descript *nd = &nfsd; 4513 int error, irdcnt; 4514 4515 nfscl_reqstart(nd, NFSPROC_CREATESESSION, nmp, NULL, 0, NULL, NULL); 4516 NFSM_BUILD(tl, uint32_t *, 4 * NFSX_UNSIGNED); 4517 *tl++ = sep->nfsess_clientid.lval[0]; 4518 *tl++ = sep->nfsess_clientid.lval[1]; 4519 *tl++ = txdr_unsigned(sequenceid); 4520 crflags = (NFSMNT_RDONLY(nmp->nm_mountp) ? 0 : NFSV4CRSESS_PERSIST); 4521 if (nfscl_enablecallb != 0 && nfs_numnfscbd > 0) 4522 crflags |= NFSV4CRSESS_CONNBACKCHAN; 4523 *tl = txdr_unsigned(crflags); 4524 4525 /* Fill in fore channel attributes. */ 4526 NFSM_BUILD(tl, uint32_t *, 7 * NFSX_UNSIGNED); 4527 *tl++ = 0; /* Header pad size */ 4528 *tl++ = txdr_unsigned(100000); /* Max request size */ 4529 *tl++ = txdr_unsigned(100000); /* Max response size */ 4530 *tl++ = txdr_unsigned(4096); /* Max response size cached */ 4531 *tl++ = txdr_unsigned(20); /* Max operations */ 4532 *tl++ = txdr_unsigned(64); /* Max slots */ 4533 *tl = 0; /* No rdma ird */ 4534 4535 /* Fill in back channel attributes. */ 4536 NFSM_BUILD(tl, uint32_t *, 7 * NFSX_UNSIGNED); 4537 *tl++ = 0; /* Header pad size */ 4538 *tl++ = txdr_unsigned(10000); /* Max request size */ 4539 *tl++ = txdr_unsigned(10000); /* Max response size */ 4540 *tl++ = txdr_unsigned(4096); /* Max response size cached */ 4541 *tl++ = txdr_unsigned(4); /* Max operations */ 4542 *tl++ = txdr_unsigned(NFSV4_CBSLOTS); /* Max slots */ 4543 *tl = 0; /* No rdma ird */ 4544 4545 NFSM_BUILD(tl, uint32_t *, 8 * NFSX_UNSIGNED); 4546 *tl++ = txdr_unsigned(NFS_CALLBCKPROG); /* Call back prog # */ 4547 4548 /* Allow AUTH_SYS callbacks as uid, gid == 0. */ 4549 *tl++ = txdr_unsigned(1); /* Auth_sys only */ 4550 *tl++ = txdr_unsigned(AUTH_SYS); /* AUTH_SYS type */ 4551 *tl++ = txdr_unsigned(nfsboottime.tv_sec); /* time stamp */ 4552 *tl++ = 0; /* Null machine name */ 4553 *tl++ = 0; /* Uid == 0 */ 4554 *tl++ = 0; /* Gid == 0 */ 4555 *tl = 0; /* No additional gids */ 4556 nd->nd_flag |= ND_USEGSSNAME; 4557 error = newnfs_request(nd, nmp, NULL, nrp, NULL, p, cred, NFS_PROG, 4558 NFS_VER4, NULL, 1, NULL, NULL); 4559 if (error != 0) 4560 return (error); 4561 if (nd->nd_repstat == 0) { 4562 NFSM_DISSECT(tl, uint32_t *, NFSX_V4SESSIONID + 4563 2 * NFSX_UNSIGNED); 4564 bcopy(tl, sep->nfsess_sessionid, NFSX_V4SESSIONID); 4565 tl += NFSX_V4SESSIONID / NFSX_UNSIGNED; 4566 sep->nfsess_sequenceid = fxdr_unsigned(uint32_t, *tl++); 4567 crflags = fxdr_unsigned(uint32_t, *tl); 4568 if ((crflags & NFSV4CRSESS_PERSIST) != 0 && mds != 0) { 4569 NFSLOCKMNT(nmp); 4570 nmp->nm_state |= NFSSTA_SESSPERSIST; 4571 NFSUNLOCKMNT(nmp); 4572 } 4573 4574 /* Get the fore channel slot count. */ 4575 NFSM_DISSECT(tl, uint32_t *, 7 * NFSX_UNSIGNED); 4576 tl += 3; /* Skip the other counts. */ 4577 sep->nfsess_maxcache = fxdr_unsigned(int, *tl++); 4578 tl++; 4579 sep->nfsess_foreslots = fxdr_unsigned(uint16_t, *tl++); 4580 NFSCL_DEBUG(4, "fore slots=%d\n", (int)sep->nfsess_foreslots); 4581 irdcnt = fxdr_unsigned(int, *tl); 4582 if (irdcnt > 0) 4583 NFSM_DISSECT(tl, uint32_t *, irdcnt * NFSX_UNSIGNED); 4584 4585 /* and the back channel slot count. */ 4586 NFSM_DISSECT(tl, uint32_t *, 7 * NFSX_UNSIGNED); 4587 tl += 5; 4588 sep->nfsess_backslots = fxdr_unsigned(uint16_t, *tl); 4589 NFSCL_DEBUG(4, "back slots=%d\n", (int)sep->nfsess_backslots); 4590 } 4591 error = nd->nd_repstat; 4592 nfsmout: 4593 mbuf_freem(nd->nd_mrep); 4594 return (error); 4595 } 4596 4597 /* 4598 * Do the NFSv4.1 Destroy Session. 4599 */ 4600 int 4601 nfsrpc_destroysession(struct nfsmount *nmp, struct nfsclclient *clp, 4602 struct ucred *cred, NFSPROC_T *p) 4603 { 4604 uint32_t *tl; 4605 struct nfsrv_descript nfsd; 4606 struct nfsrv_descript *nd = &nfsd; 4607 int error; 4608 4609 nfscl_reqstart(nd, NFSPROC_DESTROYSESSION, nmp, NULL, 0, NULL, NULL); 4610 NFSM_BUILD(tl, uint32_t *, NFSX_V4SESSIONID); 4611 bcopy(NFSMNT_MDSSESSION(nmp)->nfsess_sessionid, tl, NFSX_V4SESSIONID); 4612 nd->nd_flag |= ND_USEGSSNAME; 4613 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 4614 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4615 if (error != 0) 4616 return (error); 4617 error = nd->nd_repstat; 4618 mbuf_freem(nd->nd_mrep); 4619 return (error); 4620 } 4621 4622 /* 4623 * Do the NFSv4.1 Destroy Client. 4624 */ 4625 int 4626 nfsrpc_destroyclient(struct nfsmount *nmp, struct nfsclclient *clp, 4627 struct ucred *cred, NFSPROC_T *p) 4628 { 4629 uint32_t *tl; 4630 struct nfsrv_descript nfsd; 4631 struct nfsrv_descript *nd = &nfsd; 4632 int error; 4633 4634 nfscl_reqstart(nd, NFSPROC_DESTROYCLIENT, nmp, NULL, 0, NULL, NULL); 4635 NFSM_BUILD(tl, uint32_t *, 2 * NFSX_UNSIGNED); 4636 *tl++ = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[0]; 4637 *tl = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[1]; 4638 nd->nd_flag |= ND_USEGSSNAME; 4639 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 4640 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4641 if (error != 0) 4642 return (error); 4643 error = nd->nd_repstat; 4644 mbuf_freem(nd->nd_mrep); 4645 return (error); 4646 } 4647 4648 /* 4649 * Do the NFSv4.1 LayoutGet. 4650 */ 4651 int 4652 nfsrpc_layoutget(struct nfsmount *nmp, uint8_t *fhp, int fhlen, int iomode, 4653 uint64_t offset, uint64_t len, uint64_t minlen, int layoutlen, 4654 nfsv4stateid_t *stateidp, int *retonclosep, struct nfsclflayouthead *flhp, 4655 struct ucred *cred, NFSPROC_T *p, void *stuff) 4656 { 4657 uint32_t *tl; 4658 struct nfsrv_descript nfsd, *nd = &nfsd; 4659 struct nfsfh *nfhp; 4660 struct nfsclflayout *flp, *prevflp, *tflp; 4661 int cnt, error, gotiomode, fhcnt, nfhlen, i, j; 4662 uint8_t *cp; 4663 uint64_t retlen; 4664 4665 flp = NULL; 4666 gotiomode = -1; 4667 nfscl_reqstart(nd, NFSPROC_LAYOUTGET, nmp, fhp, fhlen, NULL, NULL); 4668 NFSM_BUILD(tl, uint32_t *, 4 * NFSX_UNSIGNED + 3 * NFSX_HYPER + 4669 NFSX_STATEID); 4670 *tl++ = newnfs_false; /* Don't signal availability. */ 4671 *tl++ = txdr_unsigned(NFSLAYOUT_NFSV4_1_FILES); 4672 *tl++ = txdr_unsigned(iomode); 4673 txdr_hyper(offset, tl); 4674 tl += 2; 4675 txdr_hyper(len, tl); 4676 tl += 2; 4677 txdr_hyper(minlen, tl); 4678 tl += 2; 4679 *tl++ = txdr_unsigned(stateidp->seqid); 4680 NFSCL_DEBUG(4, "layget seq=%d\n", (int)stateidp->seqid); 4681 *tl++ = stateidp->other[0]; 4682 *tl++ = stateidp->other[1]; 4683 *tl++ = stateidp->other[2]; 4684 *tl = txdr_unsigned(layoutlen); 4685 nd->nd_flag |= ND_USEGSSNAME; 4686 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 4687 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4688 if (error != 0) 4689 return (error); 4690 if (nd->nd_repstat == 0) { 4691 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED + NFSX_STATEID); 4692 if (*tl++ != 0) 4693 *retonclosep = 1; 4694 else 4695 *retonclosep = 0; 4696 stateidp->seqid = fxdr_unsigned(uint32_t, *tl++); 4697 NFSCL_DEBUG(4, "retoncls=%d stseq=%d\n", *retonclosep, 4698 (int)stateidp->seqid); 4699 stateidp->other[0] = *tl++; 4700 stateidp->other[1] = *tl++; 4701 stateidp->other[2] = *tl++; 4702 cnt = fxdr_unsigned(int, *tl); 4703 NFSCL_DEBUG(4, "layg cnt=%d\n", cnt); 4704 if (cnt <= 0 || cnt > 10000) { 4705 /* Don't accept more than 10000 layouts in reply. */ 4706 error = NFSERR_BADXDR; 4707 goto nfsmout; 4708 } 4709 for (i = 0; i < cnt; i++) { 4710 /* Dissect all the way to the file handle cnt. */ 4711 NFSM_DISSECT(tl, uint32_t *, 3 * NFSX_HYPER + 4712 6 * NFSX_UNSIGNED + NFSX_V4DEVICEID); 4713 fhcnt = fxdr_unsigned(int, *(tl + 11 + 4714 NFSX_V4DEVICEID / NFSX_UNSIGNED)); 4715 NFSCL_DEBUG(4, "fhcnt=%d\n", fhcnt); 4716 if (fhcnt < 0 || fhcnt > 100) { 4717 /* Don't accept more than 100 file handles. */ 4718 error = NFSERR_BADXDR; 4719 goto nfsmout; 4720 } 4721 if (fhcnt > 1) 4722 flp = malloc(sizeof(*flp) + (fhcnt - 1) * 4723 sizeof(struct nfsfh *), 4724 M_NFSFLAYOUT, M_WAITOK); 4725 else 4726 flp = malloc(sizeof(*flp), 4727 M_NFSFLAYOUT, M_WAITOK); 4728 flp->nfsfl_flags = 0; 4729 flp->nfsfl_fhcnt = 0; 4730 flp->nfsfl_devp = NULL; 4731 flp->nfsfl_off = fxdr_hyper(tl); tl += 2; 4732 retlen = fxdr_hyper(tl); tl += 2; 4733 if (flp->nfsfl_off + retlen < flp->nfsfl_off) 4734 flp->nfsfl_end = UINT64_MAX - flp->nfsfl_off; 4735 else 4736 flp->nfsfl_end = flp->nfsfl_off + retlen; 4737 flp->nfsfl_iomode = fxdr_unsigned(int, *tl++); 4738 if (gotiomode == -1) 4739 gotiomode = flp->nfsfl_iomode; 4740 NFSCL_DEBUG(4, "layg reqiom=%d retiom=%d\n", iomode, 4741 (int)flp->nfsfl_iomode); 4742 if (fxdr_unsigned(int, *tl++) != 4743 NFSLAYOUT_NFSV4_1_FILES) { 4744 printf("NFSv4.1: got non-files layout\n"); 4745 error = NFSERR_BADXDR; 4746 goto nfsmout; 4747 } 4748 NFSBCOPY(++tl, flp->nfsfl_dev, NFSX_V4DEVICEID); 4749 tl += (NFSX_V4DEVICEID / NFSX_UNSIGNED); 4750 flp->nfsfl_util = fxdr_unsigned(uint32_t, *tl++); 4751 NFSCL_DEBUG(4, "flutil=0x%x\n", flp->nfsfl_util); 4752 flp->nfsfl_stripe1 = fxdr_unsigned(uint32_t, *tl++); 4753 flp->nfsfl_patoff = fxdr_hyper(tl); tl += 2; 4754 if (fxdr_unsigned(int, *tl) != fhcnt) { 4755 printf("EEK! bad fhcnt\n"); 4756 error = NFSERR_BADXDR; 4757 goto nfsmout; 4758 } 4759 for (j = 0; j < fhcnt; j++) { 4760 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 4761 nfhlen = fxdr_unsigned(int, *tl); 4762 if (nfhlen <= 0 || nfhlen > NFSX_V4FHMAX) { 4763 error = NFSERR_BADXDR; 4764 goto nfsmout; 4765 } 4766 nfhp = malloc(sizeof(*nfhp) + nfhlen - 1, 4767 M_NFSFH, M_WAITOK); 4768 flp->nfsfl_fh[j] = nfhp; 4769 flp->nfsfl_fhcnt++; 4770 nfhp->nfh_len = nfhlen; 4771 NFSM_DISSECT(cp, uint8_t *, NFSM_RNDUP(nfhlen)); 4772 NFSBCOPY(cp, nfhp->nfh_fh, nfhlen); 4773 } 4774 if (flp->nfsfl_iomode == gotiomode) { 4775 /* Keep the list in increasing offset order. */ 4776 tflp = LIST_FIRST(flhp); 4777 prevflp = NULL; 4778 while (tflp != NULL && 4779 tflp->nfsfl_off < flp->nfsfl_off) { 4780 prevflp = tflp; 4781 tflp = LIST_NEXT(tflp, nfsfl_list); 4782 } 4783 if (prevflp == NULL) 4784 LIST_INSERT_HEAD(flhp, flp, nfsfl_list); 4785 else 4786 LIST_INSERT_AFTER(prevflp, flp, 4787 nfsfl_list); 4788 } else { 4789 printf("nfscl_layoutget(): got wrong iomode\n"); 4790 nfscl_freeflayout(flp); 4791 } 4792 flp = NULL; 4793 } 4794 } 4795 if (nd->nd_repstat != 0 && error == 0) 4796 error = nd->nd_repstat; 4797 nfsmout: 4798 if (error != 0 && flp != NULL) 4799 nfscl_freeflayout(flp); 4800 mbuf_freem(nd->nd_mrep); 4801 return (error); 4802 } 4803 4804 /* 4805 * Do the NFSv4.1 Get Device Info. 4806 */ 4807 int 4808 nfsrpc_getdeviceinfo(struct nfsmount *nmp, uint8_t *deviceid, int layouttype, 4809 uint32_t *notifybitsp, struct nfscldevinfo **ndip, struct ucred *cred, 4810 NFSPROC_T *p) 4811 { 4812 uint32_t cnt, *tl; 4813 struct nfsrv_descript nfsd; 4814 struct nfsrv_descript *nd = &nfsd; 4815 struct sockaddr_storage ss; 4816 struct nfsclds *dsp = NULL, **dspp; 4817 struct nfscldevinfo *ndi; 4818 int addrcnt, bitcnt, error, i, isudp, j, pos, safilled, stripecnt; 4819 uint8_t stripeindex; 4820 4821 *ndip = NULL; 4822 ndi = NULL; 4823 nfscl_reqstart(nd, NFSPROC_GETDEVICEINFO, nmp, NULL, 0, NULL, NULL); 4824 NFSM_BUILD(tl, uint32_t *, NFSX_V4DEVICEID + 3 * NFSX_UNSIGNED); 4825 NFSBCOPY(deviceid, tl, NFSX_V4DEVICEID); 4826 tl += (NFSX_V4DEVICEID / NFSX_UNSIGNED); 4827 *tl++ = txdr_unsigned(layouttype); 4828 *tl++ = txdr_unsigned(100000); 4829 if (notifybitsp != NULL && *notifybitsp != 0) { 4830 *tl = txdr_unsigned(1); /* One word of bits. */ 4831 NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED); 4832 *tl = txdr_unsigned(*notifybitsp); 4833 } else 4834 *tl = txdr_unsigned(0); 4835 nd->nd_flag |= ND_USEGSSNAME; 4836 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 4837 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4838 if (error != 0) 4839 return (error); 4840 if (nd->nd_repstat == 0) { 4841 NFSM_DISSECT(tl, uint32_t *, 3 * NFSX_UNSIGNED); 4842 if (layouttype != fxdr_unsigned(int, *tl++)) 4843 printf("EEK! devinfo layout type not same!\n"); 4844 stripecnt = fxdr_unsigned(int, *++tl); 4845 NFSCL_DEBUG(4, "stripecnt=%d\n", stripecnt); 4846 if (stripecnt < 1 || stripecnt > 4096) { 4847 printf("NFS devinfo stripecnt %d: out of range\n", 4848 stripecnt); 4849 error = NFSERR_BADXDR; 4850 goto nfsmout; 4851 } 4852 NFSM_DISSECT(tl, uint32_t *, (stripecnt + 1) * NFSX_UNSIGNED); 4853 addrcnt = fxdr_unsigned(int, *(tl + stripecnt)); 4854 NFSCL_DEBUG(4, "addrcnt=%d\n", addrcnt); 4855 if (addrcnt < 1 || addrcnt > 128) { 4856 printf("NFS devinfo addrcnt %d: out of range\n", 4857 addrcnt); 4858 error = NFSERR_BADXDR; 4859 goto nfsmout; 4860 } 4861 4862 /* 4863 * Now we know how many stripe indices and addresses, so 4864 * we can allocate the structure the correct size. 4865 */ 4866 i = (stripecnt * sizeof(uint8_t)) / sizeof(struct nfsclds *) 4867 + 1; 4868 NFSCL_DEBUG(4, "stripeindices=%d\n", i); 4869 ndi = malloc(sizeof(*ndi) + (addrcnt + i) * 4870 sizeof(struct nfsclds *), M_NFSDEVINFO, M_WAITOK | M_ZERO); 4871 NFSBCOPY(deviceid, ndi->nfsdi_deviceid, NFSX_V4DEVICEID); 4872 ndi->nfsdi_refcnt = 0; 4873 ndi->nfsdi_stripecnt = stripecnt; 4874 ndi->nfsdi_addrcnt = addrcnt; 4875 /* Fill in the stripe indices. */ 4876 for (i = 0; i < stripecnt; i++) { 4877 stripeindex = fxdr_unsigned(uint8_t, *tl++); 4878 NFSCL_DEBUG(4, "stripeind=%d\n", stripeindex); 4879 if (stripeindex >= addrcnt) { 4880 printf("NFS devinfo stripeindex %d: too big\n", 4881 (int)stripeindex); 4882 error = NFSERR_BADXDR; 4883 goto nfsmout; 4884 } 4885 nfsfldi_setstripeindex(ndi, i, stripeindex); 4886 } 4887 4888 /* Now, dissect the server address(es). */ 4889 safilled = 0; 4890 for (i = 0; i < addrcnt; i++) { 4891 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 4892 cnt = fxdr_unsigned(uint32_t, *tl); 4893 if (cnt == 0) { 4894 printf("NFS devinfo 0 len addrlist\n"); 4895 error = NFSERR_BADXDR; 4896 goto nfsmout; 4897 } 4898 dspp = nfsfldi_addr(ndi, i); 4899 pos = arc4random() % cnt; /* Choose one. */ 4900 safilled = 0; 4901 for (j = 0; j < cnt; j++) { 4902 error = nfsv4_getipaddr(nd, &ss, &isudp); 4903 if (error != 0 && error != EPERM) { 4904 error = NFSERR_BADXDR; 4905 goto nfsmout; 4906 } 4907 if (error == 0 && isudp == 0) { 4908 /* 4909 * The algorithm is: 4910 * - use "pos" entry if it is of the 4911 * same af_family or none of them 4912 * is of the same af_family 4913 * else 4914 * - use the first one of the same 4915 * af_family. 4916 */ 4917 if ((safilled == 0 && ss.ss_family == 4918 nmp->nm_nam->sa_family) || 4919 (j == pos && 4920 (safilled == 0 || ss.ss_family == 4921 nmp->nm_nam->sa_family)) || 4922 (safilled == 1 && ss.ss_family == 4923 nmp->nm_nam->sa_family)) { 4924 error = nfsrpc_fillsa(nmp, &ss, 4925 &dsp, p); 4926 if (error == 0) { 4927 *dspp = dsp; 4928 if (ss.ss_family == 4929 nmp->nm_nam->sa_family) 4930 safilled = 2; 4931 else 4932 safilled = 1; 4933 } 4934 } 4935 } 4936 } 4937 if (safilled == 0) 4938 break; 4939 } 4940 4941 /* And the notify bits. */ 4942 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 4943 if (safilled != 0) { 4944 bitcnt = fxdr_unsigned(int, *tl); 4945 if (bitcnt > 0) { 4946 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 4947 if (notifybitsp != NULL) 4948 *notifybitsp = 4949 fxdr_unsigned(uint32_t, *tl); 4950 } 4951 *ndip = ndi; 4952 } else 4953 error = EPERM; 4954 } 4955 if (nd->nd_repstat != 0) 4956 error = nd->nd_repstat; 4957 nfsmout: 4958 if (error != 0 && ndi != NULL) 4959 nfscl_freedevinfo(ndi); 4960 mbuf_freem(nd->nd_mrep); 4961 return (error); 4962 } 4963 4964 /* 4965 * Do the NFSv4.1 LayoutCommit. 4966 */ 4967 int 4968 nfsrpc_layoutcommit(struct nfsmount *nmp, uint8_t *fh, int fhlen, int reclaim, 4969 uint64_t off, uint64_t len, uint64_t lastbyte, nfsv4stateid_t *stateidp, 4970 int layouttype, int layoutupdatecnt, uint8_t *layp, struct ucred *cred, 4971 NFSPROC_T *p, void *stuff) 4972 { 4973 uint32_t *tl; 4974 struct nfsrv_descript nfsd, *nd = &nfsd; 4975 int error, outcnt, i; 4976 uint8_t *cp; 4977 4978 nfscl_reqstart(nd, NFSPROC_LAYOUTCOMMIT, nmp, fh, fhlen, NULL, NULL); 4979 NFSM_BUILD(tl, uint32_t *, 5 * NFSX_UNSIGNED + 3 * NFSX_HYPER + 4980 NFSX_STATEID); 4981 txdr_hyper(off, tl); 4982 tl += 2; 4983 txdr_hyper(len, tl); 4984 tl += 2; 4985 if (reclaim != 0) 4986 *tl++ = newnfs_true; 4987 else 4988 *tl++ = newnfs_false; 4989 *tl++ = txdr_unsigned(stateidp->seqid); 4990 *tl++ = stateidp->other[0]; 4991 *tl++ = stateidp->other[1]; 4992 *tl++ = stateidp->other[2]; 4993 *tl++ = newnfs_true; 4994 if (lastbyte < off) 4995 lastbyte = off; 4996 else if (lastbyte >= (off + len)) 4997 lastbyte = off + len - 1; 4998 txdr_hyper(lastbyte, tl); 4999 tl += 2; 5000 *tl++ = newnfs_false; 5001 *tl++ = txdr_unsigned(layouttype); 5002 *tl = txdr_unsigned(layoutupdatecnt); 5003 if (layoutupdatecnt > 0) { 5004 KASSERT(layouttype != NFSLAYOUT_NFSV4_1_FILES, 5005 ("Must be nil for Files Layout")); 5006 outcnt = NFSM_RNDUP(layoutupdatecnt); 5007 NFSM_BUILD(cp, uint8_t *, outcnt); 5008 NFSBCOPY(layp, cp, layoutupdatecnt); 5009 cp += layoutupdatecnt; 5010 for (i = 0; i < (outcnt - layoutupdatecnt); i++) 5011 *cp++ = 0x0; 5012 } 5013 nd->nd_flag |= ND_USEGSSNAME; 5014 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 5015 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 5016 if (error != 0) 5017 return (error); 5018 error = nd->nd_repstat; 5019 mbuf_freem(nd->nd_mrep); 5020 return (error); 5021 } 5022 5023 /* 5024 * Do the NFSv4.1 LayoutReturn. 5025 */ 5026 int 5027 nfsrpc_layoutreturn(struct nfsmount *nmp, uint8_t *fh, int fhlen, int reclaim, 5028 int layouttype, uint32_t iomode, int layoutreturn, uint64_t offset, 5029 uint64_t len, nfsv4stateid_t *stateidp, int layoutcnt, uint32_t *layp, 5030 struct ucred *cred, NFSPROC_T *p, void *stuff) 5031 { 5032 uint32_t *tl; 5033 struct nfsrv_descript nfsd, *nd = &nfsd; 5034 int error, outcnt, i; 5035 uint8_t *cp; 5036 5037 nfscl_reqstart(nd, NFSPROC_LAYOUTRETURN, nmp, fh, fhlen, NULL, NULL); 5038 NFSM_BUILD(tl, uint32_t *, 4 * NFSX_UNSIGNED); 5039 if (reclaim != 0) 5040 *tl++ = newnfs_true; 5041 else 5042 *tl++ = newnfs_false; 5043 *tl++ = txdr_unsigned(layouttype); 5044 *tl++ = txdr_unsigned(iomode); 5045 *tl = txdr_unsigned(layoutreturn); 5046 if (layoutreturn == NFSLAYOUTRETURN_FILE) { 5047 NFSM_BUILD(tl, uint32_t *, 2 * NFSX_HYPER + NFSX_STATEID + 5048 NFSX_UNSIGNED); 5049 txdr_hyper(offset, tl); 5050 tl += 2; 5051 txdr_hyper(len, tl); 5052 tl += 2; 5053 NFSCL_DEBUG(4, "layoutret stseq=%d\n", (int)stateidp->seqid); 5054 *tl++ = txdr_unsigned(stateidp->seqid); 5055 *tl++ = stateidp->other[0]; 5056 *tl++ = stateidp->other[1]; 5057 *tl++ = stateidp->other[2]; 5058 *tl = txdr_unsigned(layoutcnt); 5059 if (layoutcnt > 0) { 5060 outcnt = NFSM_RNDUP(layoutcnt); 5061 NFSM_BUILD(cp, uint8_t *, outcnt); 5062 NFSBCOPY(layp, cp, layoutcnt); 5063 cp += layoutcnt; 5064 for (i = 0; i < (outcnt - layoutcnt); i++) 5065 *cp++ = 0x0; 5066 } 5067 } 5068 nd->nd_flag |= ND_USEGSSNAME; 5069 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 5070 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 5071 if (error != 0) 5072 return (error); 5073 if (nd->nd_repstat == 0) { 5074 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 5075 if (*tl != 0) { 5076 NFSM_DISSECT(tl, uint32_t *, NFSX_STATEID); 5077 stateidp->seqid = fxdr_unsigned(uint32_t, *tl++); 5078 stateidp->other[0] = *tl++; 5079 stateidp->other[1] = *tl++; 5080 stateidp->other[2] = *tl; 5081 } 5082 } else 5083 error = nd->nd_repstat; 5084 nfsmout: 5085 mbuf_freem(nd->nd_mrep); 5086 return (error); 5087 } 5088 5089 /* 5090 * Acquire a layout and devinfo, if possible. The caller must have acquired 5091 * a reference count on the nfsclclient structure before calling this. 5092 * Return the layout in lypp with a reference count on it, if successful. 5093 */ 5094 static int 5095 nfsrpc_getlayout(struct nfsmount *nmp, vnode_t vp, struct nfsfh *nfhp, 5096 int iomode, uint32_t *notifybitsp, nfsv4stateid_t *stateidp, uint64_t off, 5097 struct nfscllayout **lypp, struct ucred *cred, NFSPROC_T *p) 5098 { 5099 struct nfscllayout *lyp; 5100 struct nfsclflayout *flp, *tflp; 5101 struct nfscldevinfo *dip; 5102 struct nfsclflayouthead flh; 5103 int error = 0, islocked, layoutlen, recalled, retonclose; 5104 nfsv4stateid_t stateid; 5105 5106 *lypp = NULL; 5107 /* 5108 * If lyp is returned non-NULL, there will be a refcnt (shared lock) 5109 * on it, iff flp != NULL or a lock (exclusive lock) on it iff 5110 * flp == NULL. 5111 */ 5112 lyp = nfscl_getlayout(nmp->nm_clp, nfhp->nfh_fh, nfhp->nfh_len, 5113 off, &flp, &recalled); 5114 islocked = 0; 5115 if (lyp == NULL || flp == NULL) { 5116 if (recalled != 0) 5117 return (EIO); 5118 LIST_INIT(&flh); 5119 layoutlen = NFSMNT_MDSSESSION(nmp)->nfsess_maxcache - 5120 (NFSX_STATEID + 3 * NFSX_UNSIGNED); 5121 if (lyp == NULL) { 5122 stateid.seqid = 0; 5123 stateid.other[0] = stateidp->other[0]; 5124 stateid.other[1] = stateidp->other[1]; 5125 stateid.other[2] = stateidp->other[2]; 5126 error = nfsrpc_layoutget(nmp, nfhp->nfh_fh, 5127 nfhp->nfh_len, iomode, (uint64_t)0, INT64_MAX, 5128 (uint64_t)0, layoutlen, &stateid, &retonclose, 5129 &flh, cred, p, NULL); 5130 } else { 5131 islocked = 1; 5132 stateid.seqid = lyp->nfsly_stateid.seqid; 5133 stateid.other[0] = lyp->nfsly_stateid.other[0]; 5134 stateid.other[1] = lyp->nfsly_stateid.other[1]; 5135 stateid.other[2] = lyp->nfsly_stateid.other[2]; 5136 error = nfsrpc_layoutget(nmp, nfhp->nfh_fh, 5137 nfhp->nfh_len, iomode, off, INT64_MAX, 5138 (uint64_t)0, layoutlen, &stateid, &retonclose, 5139 &flh, cred, p, NULL); 5140 } 5141 if (error == 0) 5142 LIST_FOREACH(tflp, &flh, nfsfl_list) { 5143 error = nfscl_adddevinfo(nmp, NULL, tflp); 5144 if (error != 0) { 5145 error = nfsrpc_getdeviceinfo(nmp, 5146 tflp->nfsfl_dev, 5147 NFSLAYOUT_NFSV4_1_FILES, 5148 notifybitsp, &dip, cred, p); 5149 if (error != 0) 5150 break; 5151 error = nfscl_adddevinfo(nmp, dip, 5152 tflp); 5153 if (error != 0) 5154 printf( 5155 "getlayout: cannot add\n"); 5156 } 5157 } 5158 if (error == 0) { 5159 /* 5160 * nfscl_layout() always returns with the nfsly_lock 5161 * set to a refcnt (shared lock). 5162 */ 5163 error = nfscl_layout(nmp, vp, nfhp->nfh_fh, 5164 nfhp->nfh_len, &stateid, retonclose, &flh, &lyp, 5165 cred, p); 5166 if (error == 0) 5167 *lypp = lyp; 5168 } else if (islocked != 0) 5169 nfsv4_unlock(&lyp->nfsly_lock, 0); 5170 } else 5171 *lypp = lyp; 5172 return (error); 5173 } 5174 5175 /* 5176 * Do a TCP connection plus exchange id and create session. 5177 * If successful, a "struct nfsclds" is linked into the list for the 5178 * mount point and a pointer to it is returned. 5179 */ 5180 static int 5181 nfsrpc_fillsa(struct nfsmount *nmp, struct sockaddr_storage *ssp, 5182 struct nfsclds **dspp, NFSPROC_T *p) 5183 { 5184 struct sockaddr_in *msad, *sad, *ssd; 5185 struct sockaddr_in6 *msad6, *sad6, *ssd6; 5186 struct nfsclclient *clp; 5187 struct nfssockreq *nrp; 5188 struct nfsclds *dsp, *tdsp; 5189 int error; 5190 enum nfsclds_state retv; 5191 uint32_t sequenceid; 5192 5193 KASSERT(nmp->nm_sockreq.nr_cred != NULL, 5194 ("nfsrpc_fillsa: NULL nr_cred")); 5195 NFSLOCKCLSTATE(); 5196 clp = nmp->nm_clp; 5197 NFSUNLOCKCLSTATE(); 5198 if (clp == NULL) 5199 return (EPERM); 5200 if (ssp->ss_family == AF_INET) { 5201 ssd = (struct sockaddr_in *)ssp; 5202 NFSLOCKMNT(nmp); 5203 5204 /* 5205 * Check to see if we already have a session for this 5206 * address that is usable for a DS. 5207 * Note that the MDS's address is in a different place 5208 * than the sessions already acquired for DS's. 5209 */ 5210 msad = (struct sockaddr_in *)nmp->nm_sockreq.nr_nam; 5211 tdsp = TAILQ_FIRST(&nmp->nm_sess); 5212 while (tdsp != NULL) { 5213 if (msad != NULL && msad->sin_family == AF_INET && 5214 ssd->sin_addr.s_addr == msad->sin_addr.s_addr && 5215 ssd->sin_port == msad->sin_port && 5216 (tdsp->nfsclds_flags & NFSCLDS_DS) != 0) { 5217 *dspp = tdsp; 5218 NFSUNLOCKMNT(nmp); 5219 NFSCL_DEBUG(4, "fnd same addr\n"); 5220 return (0); 5221 } 5222 tdsp = TAILQ_NEXT(tdsp, nfsclds_list); 5223 if (tdsp != NULL && tdsp->nfsclds_sockp != NULL) 5224 msad = (struct sockaddr_in *) 5225 tdsp->nfsclds_sockp->nr_nam; 5226 else 5227 msad = NULL; 5228 } 5229 NFSUNLOCKMNT(nmp); 5230 5231 /* No IP address match, so look for new/trunked one. */ 5232 sad = malloc(sizeof(*sad), M_SONAME, M_WAITOK | M_ZERO); 5233 sad->sin_len = sizeof(*sad); 5234 sad->sin_family = AF_INET; 5235 sad->sin_port = ssd->sin_port; 5236 sad->sin_addr.s_addr = ssd->sin_addr.s_addr; 5237 nrp = malloc(sizeof(*nrp), M_NFSSOCKREQ, M_WAITOK | M_ZERO); 5238 nrp->nr_nam = (struct sockaddr *)sad; 5239 } else if (ssp->ss_family == AF_INET6) { 5240 ssd6 = (struct sockaddr_in6 *)ssp; 5241 NFSLOCKMNT(nmp); 5242 5243 /* 5244 * Check to see if we already have a session for this 5245 * address that is usable for a DS. 5246 * Note that the MDS's address is in a different place 5247 * than the sessions already acquired for DS's. 5248 */ 5249 msad6 = (struct sockaddr_in6 *)nmp->nm_sockreq.nr_nam; 5250 tdsp = TAILQ_FIRST(&nmp->nm_sess); 5251 while (tdsp != NULL) { 5252 if (msad6 != NULL && msad6->sin6_family == AF_INET6 && 5253 IN6_ARE_ADDR_EQUAL(&ssd6->sin6_addr, 5254 &msad6->sin6_addr) && 5255 ssd6->sin6_port == msad6->sin6_port && 5256 (tdsp->nfsclds_flags & NFSCLDS_DS) != 0) { 5257 *dspp = tdsp; 5258 NFSUNLOCKMNT(nmp); 5259 return (0); 5260 } 5261 tdsp = TAILQ_NEXT(tdsp, nfsclds_list); 5262 if (tdsp != NULL && tdsp->nfsclds_sockp != NULL) 5263 msad6 = (struct sockaddr_in6 *) 5264 tdsp->nfsclds_sockp->nr_nam; 5265 else 5266 msad6 = NULL; 5267 } 5268 NFSUNLOCKMNT(nmp); 5269 5270 /* No IP address match, so look for new/trunked one. */ 5271 sad6 = malloc(sizeof(*sad6), M_SONAME, M_WAITOK | M_ZERO); 5272 sad6->sin6_len = sizeof(*sad6); 5273 sad6->sin6_family = AF_INET6; 5274 sad6->sin6_port = ssd6->sin6_port; 5275 NFSBCOPY(&ssd6->sin6_addr, &sad6->sin6_addr, 5276 sizeof(struct in6_addr)); 5277 nrp = malloc(sizeof(*nrp), M_NFSSOCKREQ, M_WAITOK | M_ZERO); 5278 nrp->nr_nam = (struct sockaddr *)sad6; 5279 } else 5280 return (EPERM); 5281 5282 nrp->nr_sotype = SOCK_STREAM; 5283 mtx_init(&nrp->nr_mtx, "nfssock", NULL, MTX_DEF); 5284 nrp->nr_prog = NFS_PROG; 5285 nrp->nr_vers = NFS_VER4; 5286 5287 /* 5288 * Use the credentials that were used for the mount, which are 5289 * in nmp->nm_sockreq.nr_cred for newnfs_connect() etc. 5290 * Ref. counting the credentials with crhold() is probably not 5291 * necessary, since nm_sockreq.nr_cred won't be crfree()'d until 5292 * unmount, but I did it anyhow. 5293 */ 5294 nrp->nr_cred = crhold(nmp->nm_sockreq.nr_cred); 5295 error = newnfs_connect(nmp, nrp, NULL, p, 0); 5296 NFSCL_DEBUG(3, "DS connect=%d\n", error); 5297 5298 /* Now, do the exchangeid and create session. */ 5299 if (error == 0) 5300 error = nfsrpc_exchangeid(nmp, clp, nrp, NFSV4EXCH_USEPNFSDS, 5301 &dsp, nrp->nr_cred, p); 5302 NFSCL_DEBUG(3, "DS exchangeid=%d\n", error); 5303 if (error == 0) { 5304 dsp->nfsclds_sockp = nrp; 5305 NFSLOCKMNT(nmp); 5306 retv = nfscl_getsameserver(nmp, dsp, &tdsp); 5307 NFSCL_DEBUG(3, "getsame ret=%d\n", retv); 5308 if (retv == NFSDSP_USETHISSESSION) { 5309 NFSUNLOCKMNT(nmp); 5310 /* 5311 * If there is already a session for this server, 5312 * use it. 5313 */ 5314 (void)newnfs_disconnect(nrp); 5315 nfscl_freenfsclds(dsp); 5316 *dspp = tdsp; 5317 return (0); 5318 } 5319 if (retv == NFSDSP_SEQTHISSESSION) 5320 sequenceid = tdsp->nfsclds_sess.nfsess_sequenceid; 5321 else 5322 sequenceid = dsp->nfsclds_sess.nfsess_sequenceid; 5323 NFSUNLOCKMNT(nmp); 5324 error = nfsrpc_createsession(nmp, &dsp->nfsclds_sess, 5325 nrp, sequenceid, 0, nrp->nr_cred, p); 5326 NFSCL_DEBUG(3, "DS createsess=%d\n", error); 5327 } else { 5328 NFSFREECRED(nrp->nr_cred); 5329 NFSFREEMUTEX(&nrp->nr_mtx); 5330 free(nrp->nr_nam, M_SONAME); 5331 free(nrp, M_NFSSOCKREQ); 5332 } 5333 if (error == 0) { 5334 NFSCL_DEBUG(3, "add DS session\n"); 5335 /* 5336 * Put it at the end of the list. That way the list 5337 * is ordered by when the entry was added. This matters 5338 * since the one done first is the one that should be 5339 * used for sequencid'ing any subsequent create sessions. 5340 */ 5341 NFSLOCKMNT(nmp); 5342 TAILQ_INSERT_TAIL(&nmp->nm_sess, dsp, nfsclds_list); 5343 NFSUNLOCKMNT(nmp); 5344 *dspp = dsp; 5345 } else if (dsp != NULL) 5346 nfscl_freenfsclds(dsp); 5347 return (error); 5348 } 5349 5350 /* 5351 * Do the NFSv4.1 Reclaim Complete. 5352 */ 5353 int 5354 nfsrpc_reclaimcomplete(struct nfsmount *nmp, struct ucred *cred, NFSPROC_T *p) 5355 { 5356 uint32_t *tl; 5357 struct nfsrv_descript nfsd; 5358 struct nfsrv_descript *nd = &nfsd; 5359 int error; 5360 5361 nfscl_reqstart(nd, NFSPROC_RECLAIMCOMPL, nmp, NULL, 0, NULL, NULL); 5362 NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED); 5363 *tl = newnfs_false; 5364 nd->nd_flag |= ND_USEGSSNAME; 5365 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 5366 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 5367 if (error != 0) 5368 return (error); 5369 error = nd->nd_repstat; 5370 mbuf_freem(nd->nd_mrep); 5371 return (error); 5372 } 5373 5374 /* 5375 * Initialize the slot tables for a session. 5376 */ 5377 static void 5378 nfscl_initsessionslots(struct nfsclsession *sep) 5379 { 5380 int i; 5381 5382 for (i = 0; i < NFSV4_CBSLOTS; i++) { 5383 if (sep->nfsess_cbslots[i].nfssl_reply != NULL) 5384 m_freem(sep->nfsess_cbslots[i].nfssl_reply); 5385 NFSBZERO(&sep->nfsess_cbslots[i], sizeof(struct nfsslot)); 5386 } 5387 for (i = 0; i < 64; i++) 5388 sep->nfsess_slotseq[i] = 0; 5389 sep->nfsess_slots = 0; 5390 } 5391 5392 /* 5393 * Called to try and do an I/O operation via an NFSv4.1 Data Server (DS). 5394 */ 5395 int 5396 nfscl_doiods(vnode_t vp, struct uio *uiop, int *iomode, int *must_commit, 5397 uint32_t rwaccess, struct ucred *cred, NFSPROC_T *p) 5398 { 5399 struct nfsnode *np = VTONFS(vp); 5400 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 5401 struct nfscllayout *layp; 5402 struct nfscldevinfo *dip; 5403 struct nfsclflayout *rflp; 5404 nfsv4stateid_t stateid; 5405 struct ucred *newcred; 5406 uint64_t lastbyte, len, off, oresid, xfer; 5407 int eof, error, iolaymode, recalled; 5408 void *lckp; 5409 5410 if (!NFSHASPNFS(nmp) || nfscl_enablecallb == 0 || nfs_numnfscbd == 0 || 5411 (np->n_flag & NNOLAYOUT) != 0) 5412 return (EIO); 5413 /* Now, get a reference cnt on the clientid for this mount. */ 5414 if (nfscl_getref(nmp) == 0) 5415 return (EIO); 5416 5417 /* Find an appropriate stateid. */ 5418 newcred = NFSNEWCRED(cred); 5419 error = nfscl_getstateid(vp, np->n_fhp->nfh_fh, np->n_fhp->nfh_len, 5420 rwaccess, 1, newcred, p, &stateid, &lckp); 5421 if (error != 0) { 5422 NFSFREECRED(newcred); 5423 nfscl_relref(nmp); 5424 return (error); 5425 } 5426 /* Search for a layout for this file. */ 5427 off = uiop->uio_offset; 5428 layp = nfscl_getlayout(nmp->nm_clp, np->n_fhp->nfh_fh, 5429 np->n_fhp->nfh_len, off, &rflp, &recalled); 5430 if (layp == NULL || rflp == NULL) { 5431 if (recalled != 0) { 5432 NFSFREECRED(newcred); 5433 nfscl_relref(nmp); 5434 return (EIO); 5435 } 5436 if (layp != NULL) { 5437 nfscl_rellayout(layp, (rflp == NULL) ? 1 : 0); 5438 layp = NULL; 5439 } 5440 /* Try and get a Layout, if it is supported. */ 5441 if (rwaccess == NFSV4OPEN_ACCESSWRITE || 5442 (np->n_flag & NWRITEOPENED) != 0) 5443 iolaymode = NFSLAYOUTIOMODE_RW; 5444 else 5445 iolaymode = NFSLAYOUTIOMODE_READ; 5446 error = nfsrpc_getlayout(nmp, vp, np->n_fhp, iolaymode, 5447 NULL, &stateid, off, &layp, newcred, p); 5448 if (error != 0) { 5449 NFSLOCKNODE(np); 5450 np->n_flag |= NNOLAYOUT; 5451 NFSUNLOCKNODE(np); 5452 if (lckp != NULL) 5453 nfscl_lockderef(lckp); 5454 NFSFREECRED(newcred); 5455 if (layp != NULL) 5456 nfscl_rellayout(layp, 0); 5457 nfscl_relref(nmp); 5458 return (error); 5459 } 5460 } 5461 5462 /* 5463 * Loop around finding a layout that works for the first part of 5464 * this I/O operation, and then call the function that actually 5465 * does the RPC. 5466 */ 5467 eof = 0; 5468 len = (uint64_t)uiop->uio_resid; 5469 while (len > 0 && error == 0 && eof == 0) { 5470 off = uiop->uio_offset; 5471 error = nfscl_findlayoutforio(layp, off, rwaccess, &rflp); 5472 if (error == 0) { 5473 oresid = xfer = (uint64_t)uiop->uio_resid; 5474 if (xfer > (rflp->nfsfl_end - rflp->nfsfl_off)) 5475 xfer = rflp->nfsfl_end - rflp->nfsfl_off; 5476 dip = nfscl_getdevinfo(nmp->nm_clp, rflp->nfsfl_dev, 5477 rflp->nfsfl_devp); 5478 if (dip != NULL) { 5479 error = nfscl_doflayoutio(vp, uiop, iomode, 5480 must_commit, &eof, &stateid, rwaccess, dip, 5481 layp, rflp, off, xfer, newcred, p); 5482 nfscl_reldevinfo(dip); 5483 lastbyte = off + xfer - 1; 5484 if (error == 0) { 5485 NFSLOCKCLSTATE(); 5486 if (lastbyte > layp->nfsly_lastbyte) 5487 layp->nfsly_lastbyte = lastbyte; 5488 NFSUNLOCKCLSTATE(); 5489 } 5490 } else 5491 error = EIO; 5492 if (error == 0) 5493 len -= (oresid - (uint64_t)uiop->uio_resid); 5494 } 5495 } 5496 if (lckp != NULL) 5497 nfscl_lockderef(lckp); 5498 NFSFREECRED(newcred); 5499 nfscl_rellayout(layp, 0); 5500 nfscl_relref(nmp); 5501 return (error); 5502 } 5503 5504 /* 5505 * Find a file layout that will handle the first bytes of the requested 5506 * range and return the information from it needed to to the I/O operation. 5507 */ 5508 int 5509 nfscl_findlayoutforio(struct nfscllayout *lyp, uint64_t off, uint32_t rwaccess, 5510 struct nfsclflayout **retflpp) 5511 { 5512 struct nfsclflayout *flp, *nflp, *rflp; 5513 uint32_t rw; 5514 5515 rflp = NULL; 5516 rw = rwaccess; 5517 /* For reading, do the Read list first and then the Write list. */ 5518 do { 5519 if (rw == NFSV4OPEN_ACCESSREAD) 5520 flp = LIST_FIRST(&lyp->nfsly_flayread); 5521 else 5522 flp = LIST_FIRST(&lyp->nfsly_flayrw); 5523 while (flp != NULL) { 5524 nflp = LIST_NEXT(flp, nfsfl_list); 5525 if (flp->nfsfl_off > off) 5526 break; 5527 if (flp->nfsfl_end > off && 5528 (rflp == NULL || rflp->nfsfl_end < flp->nfsfl_end)) 5529 rflp = flp; 5530 flp = nflp; 5531 } 5532 if (rw == NFSV4OPEN_ACCESSREAD) 5533 rw = NFSV4OPEN_ACCESSWRITE; 5534 else 5535 rw = 0; 5536 } while (rw != 0); 5537 if (rflp != NULL) { 5538 /* This one covers the most bytes starting at off. */ 5539 *retflpp = rflp; 5540 return (0); 5541 } 5542 return (EIO); 5543 } 5544 5545 /* 5546 * Do I/O using an NFSv4.1 file layout. 5547 */ 5548 static int 5549 nfscl_doflayoutio(vnode_t vp, struct uio *uiop, int *iomode, int *must_commit, 5550 int *eofp, nfsv4stateid_t *stateidp, int rwflag, struct nfscldevinfo *dp, 5551 struct nfscllayout *lyp, struct nfsclflayout *flp, uint64_t off, 5552 uint64_t len, struct ucred *cred, NFSPROC_T *p) 5553 { 5554 uint64_t io_off, rel_off, stripe_unit_size, transfer, xfer; 5555 int commit_thru_mds, error = 0, stripe_index, stripe_pos; 5556 struct nfsnode *np; 5557 struct nfsfh *fhp; 5558 struct nfsclds **dspp; 5559 5560 np = VTONFS(vp); 5561 rel_off = off - flp->nfsfl_patoff; 5562 stripe_unit_size = (flp->nfsfl_util >> 6) & 0x3ffffff; 5563 stripe_pos = (rel_off / stripe_unit_size + flp->nfsfl_stripe1) % 5564 dp->nfsdi_stripecnt; 5565 transfer = stripe_unit_size - (rel_off % stripe_unit_size); 5566 5567 /* Loop around, doing I/O for each stripe unit. */ 5568 while (len > 0 && error == 0) { 5569 stripe_index = nfsfldi_stripeindex(dp, stripe_pos); 5570 dspp = nfsfldi_addr(dp, stripe_index); 5571 if (len > transfer) 5572 xfer = transfer; 5573 else 5574 xfer = len; 5575 if ((flp->nfsfl_util & NFSFLAYUTIL_DENSE) != 0) { 5576 /* Dense layout. */ 5577 if (stripe_pos >= flp->nfsfl_fhcnt) 5578 return (EIO); 5579 fhp = flp->nfsfl_fh[stripe_pos]; 5580 io_off = (rel_off / (stripe_unit_size * 5581 dp->nfsdi_stripecnt)) * stripe_unit_size + 5582 rel_off % stripe_unit_size; 5583 } else { 5584 /* Sparse layout. */ 5585 if (flp->nfsfl_fhcnt > 1) { 5586 if (stripe_index >= flp->nfsfl_fhcnt) 5587 return (EIO); 5588 fhp = flp->nfsfl_fh[stripe_index]; 5589 } else if (flp->nfsfl_fhcnt == 1) 5590 fhp = flp->nfsfl_fh[0]; 5591 else 5592 fhp = np->n_fhp; 5593 io_off = off; 5594 } 5595 if ((flp->nfsfl_util & NFSFLAYUTIL_COMMIT_THRU_MDS) != 0) 5596 commit_thru_mds = 1; 5597 else 5598 commit_thru_mds = 0; 5599 if (rwflag == FREAD) 5600 error = nfsrpc_readds(vp, uiop, stateidp, eofp, *dspp, 5601 io_off, xfer, fhp, cred, p); 5602 else { 5603 error = nfsrpc_writeds(vp, uiop, iomode, must_commit, 5604 stateidp, *dspp, io_off, xfer, fhp, commit_thru_mds, 5605 cred, p); 5606 if (error == 0) { 5607 NFSLOCKCLSTATE(); 5608 lyp->nfsly_flags |= NFSLY_WRITTEN; 5609 NFSUNLOCKCLSTATE(); 5610 } 5611 } 5612 if (error == 0) { 5613 transfer = stripe_unit_size; 5614 stripe_pos = (stripe_pos + 1) % dp->nfsdi_stripecnt; 5615 len -= xfer; 5616 off += xfer; 5617 } 5618 } 5619 return (error); 5620 } 5621 5622 /* 5623 * The actual read RPC done to a DS. 5624 */ 5625 static int 5626 nfsrpc_readds(vnode_t vp, struct uio *uiop, nfsv4stateid_t *stateidp, int *eofp, 5627 struct nfsclds *dsp, uint64_t io_off, int len, struct nfsfh *fhp, 5628 struct ucred *cred, NFSPROC_T *p) 5629 { 5630 uint32_t *tl; 5631 int error, retlen; 5632 struct nfsrv_descript nfsd; 5633 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 5634 struct nfsrv_descript *nd = &nfsd; 5635 struct nfssockreq *nrp; 5636 5637 nd->nd_mrep = NULL; 5638 nfscl_reqstart(nd, NFSPROC_READDS, nmp, fhp->nfh_fh, fhp->nfh_len, 5639 NULL, &dsp->nfsclds_sess); 5640 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSEQIDZERO); 5641 NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED * 3); 5642 txdr_hyper(io_off, tl); 5643 *(tl + 2) = txdr_unsigned(len); 5644 nrp = dsp->nfsclds_sockp; 5645 if (nrp == NULL) 5646 /* If NULL, use the MDS socket. */ 5647 nrp = &nmp->nm_sockreq; 5648 error = newnfs_request(nd, nmp, NULL, nrp, vp, p, cred, 5649 NFS_PROG, NFS_VER4, NULL, 1, NULL, &dsp->nfsclds_sess); 5650 if (error != 0) 5651 return (error); 5652 if (nd->nd_repstat != 0) { 5653 error = nd->nd_repstat; 5654 goto nfsmout; 5655 } 5656 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 5657 *eofp = fxdr_unsigned(int, *tl); 5658 NFSM_STRSIZ(retlen, len); 5659 error = nfsm_mbufuio(nd, uiop, retlen); 5660 nfsmout: 5661 if (nd->nd_mrep != NULL) 5662 mbuf_freem(nd->nd_mrep); 5663 return (error); 5664 } 5665 5666 /* 5667 * The actual write RPC done to a DS. 5668 */ 5669 static int 5670 nfsrpc_writeds(vnode_t vp, struct uio *uiop, int *iomode, int *must_commit, 5671 nfsv4stateid_t *stateidp, struct nfsclds *dsp, uint64_t io_off, int len, 5672 struct nfsfh *fhp, int commit_thru_mds, struct ucred *cred, NFSPROC_T *p) 5673 { 5674 uint32_t *tl; 5675 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 5676 int error, rlen, commit, committed = NFSWRITE_FILESYNC; 5677 int32_t backup; 5678 struct nfsrv_descript nfsd; 5679 struct nfsrv_descript *nd = &nfsd; 5680 struct nfssockreq *nrp; 5681 5682 KASSERT(uiop->uio_iovcnt == 1, ("nfs: writerpc iovcnt > 1")); 5683 nd->nd_mrep = NULL; 5684 nfscl_reqstart(nd, NFSPROC_WRITEDS, nmp, fhp->nfh_fh, fhp->nfh_len, 5685 NULL, &dsp->nfsclds_sess); 5686 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSEQIDZERO); 5687 NFSM_BUILD(tl, uint32_t *, NFSX_HYPER + 2 * NFSX_UNSIGNED); 5688 txdr_hyper(io_off, tl); 5689 tl += 2; 5690 *tl++ = txdr_unsigned(*iomode); 5691 *tl = txdr_unsigned(len); 5692 nfsm_uiombuf(nd, uiop, len); 5693 nrp = dsp->nfsclds_sockp; 5694 if (nrp == NULL) 5695 /* If NULL, use the MDS socket. */ 5696 nrp = &nmp->nm_sockreq; 5697 error = newnfs_request(nd, nmp, NULL, nrp, vp, p, cred, 5698 NFS_PROG, NFS_VER4, NULL, 1, NULL, &dsp->nfsclds_sess); 5699 if (error != 0) 5700 return (error); 5701 if (nd->nd_repstat != 0) { 5702 /* 5703 * In case the rpc gets retried, roll 5704 * the uio fileds changed by nfsm_uiombuf() 5705 * back. 5706 */ 5707 uiop->uio_offset -= len; 5708 uio_uio_resid_add(uiop, len); 5709 uio_iov_base_add(uiop, -len); 5710 uio_iov_len_add(uiop, len); 5711 error = nd->nd_repstat; 5712 } else { 5713 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED + NFSX_VERF); 5714 rlen = fxdr_unsigned(int, *tl++); 5715 if (rlen == 0) { 5716 error = NFSERR_IO; 5717 goto nfsmout; 5718 } else if (rlen < len) { 5719 backup = len - rlen; 5720 uio_iov_base_add(uiop, -(backup)); 5721 uio_iov_len_add(uiop, backup); 5722 uiop->uio_offset -= backup; 5723 uio_uio_resid_add(uiop, backup); 5724 len = rlen; 5725 } 5726 commit = fxdr_unsigned(int, *tl++); 5727 5728 /* 5729 * Return the lowest committment level 5730 * obtained by any of the RPCs. 5731 */ 5732 if (committed == NFSWRITE_FILESYNC) 5733 committed = commit; 5734 else if (committed == NFSWRITE_DATASYNC && 5735 commit == NFSWRITE_UNSTABLE) 5736 committed = commit; 5737 if (commit_thru_mds != 0) { 5738 NFSLOCKMNT(nmp); 5739 if (!NFSHASWRITEVERF(nmp)) { 5740 NFSBCOPY(tl, nmp->nm_verf, NFSX_VERF); 5741 NFSSETWRITEVERF(nmp); 5742 } else if (NFSBCMP(tl, nmp->nm_verf, NFSX_VERF)) { 5743 *must_commit = 1; 5744 NFSBCOPY(tl, nmp->nm_verf, NFSX_VERF); 5745 } 5746 NFSUNLOCKMNT(nmp); 5747 } else { 5748 NFSLOCKDS(dsp); 5749 if ((dsp->nfsclds_flags & NFSCLDS_HASWRITEVERF) == 0) { 5750 NFSBCOPY(tl, dsp->nfsclds_verf, NFSX_VERF); 5751 dsp->nfsclds_flags |= NFSCLDS_HASWRITEVERF; 5752 } else if (NFSBCMP(tl, dsp->nfsclds_verf, NFSX_VERF)) { 5753 *must_commit = 1; 5754 NFSBCOPY(tl, dsp->nfsclds_verf, NFSX_VERF); 5755 } 5756 NFSUNLOCKDS(dsp); 5757 } 5758 } 5759 nfsmout: 5760 if (nd->nd_mrep != NULL) 5761 mbuf_freem(nd->nd_mrep); 5762 *iomode = committed; 5763 if (nd->nd_repstat != 0 && error == 0) 5764 error = nd->nd_repstat; 5765 return (error); 5766 } 5767 5768 /* 5769 * Free up the nfsclds structure. 5770 */ 5771 void 5772 nfscl_freenfsclds(struct nfsclds *dsp) 5773 { 5774 int i; 5775 5776 if (dsp == NULL) 5777 return; 5778 if (dsp->nfsclds_sockp != NULL) { 5779 NFSFREECRED(dsp->nfsclds_sockp->nr_cred); 5780 NFSFREEMUTEX(&dsp->nfsclds_sockp->nr_mtx); 5781 free(dsp->nfsclds_sockp->nr_nam, M_SONAME); 5782 free(dsp->nfsclds_sockp, M_NFSSOCKREQ); 5783 } 5784 NFSFREEMUTEX(&dsp->nfsclds_mtx); 5785 NFSFREEMUTEX(&dsp->nfsclds_sess.nfsess_mtx); 5786 for (i = 0; i < NFSV4_CBSLOTS; i++) { 5787 if (dsp->nfsclds_sess.nfsess_cbslots[i].nfssl_reply != NULL) 5788 m_freem( 5789 dsp->nfsclds_sess.nfsess_cbslots[i].nfssl_reply); 5790 } 5791 free(dsp, M_NFSCLDS); 5792 } 5793 5794 static enum nfsclds_state 5795 nfscl_getsameserver(struct nfsmount *nmp, struct nfsclds *newdsp, 5796 struct nfsclds **retdspp) 5797 { 5798 struct nfsclds *dsp, *cur_dsp; 5799 5800 /* 5801 * Search the list of nfsclds structures for one with the same 5802 * server. 5803 */ 5804 cur_dsp = NULL; 5805 TAILQ_FOREACH(dsp, &nmp->nm_sess, nfsclds_list) { 5806 if (dsp->nfsclds_servownlen == newdsp->nfsclds_servownlen && 5807 dsp->nfsclds_servownlen != 0 && 5808 !NFSBCMP(dsp->nfsclds_serverown, newdsp->nfsclds_serverown, 5809 dsp->nfsclds_servownlen)) { 5810 NFSCL_DEBUG(4, "fnd same fdsp=%p dsp=%p flg=0x%x\n", 5811 TAILQ_FIRST(&nmp->nm_sess), dsp, 5812 dsp->nfsclds_flags); 5813 /* Server major id matches. */ 5814 if ((dsp->nfsclds_flags & NFSCLDS_DS) != 0) { 5815 *retdspp = dsp; 5816 return (NFSDSP_USETHISSESSION); 5817 } 5818 5819 /* 5820 * Note the first match, so it can be used for 5821 * sequence'ing new sessions. 5822 */ 5823 if (cur_dsp == NULL) 5824 cur_dsp = dsp; 5825 } 5826 } 5827 if (cur_dsp != NULL) { 5828 *retdspp = cur_dsp; 5829 return (NFSDSP_SEQTHISSESSION); 5830 } 5831 return (NFSDSP_NOTFOUND); 5832 } 5833 5834 #ifdef notyet 5835 /* 5836 * NFS commit rpc to a DS. 5837 */ 5838 static int 5839 nfsrpc_commitds(vnode_t vp, uint64_t offset, int cnt, struct nfsclds *dsp, 5840 struct nfsfh *fhp, struct ucred *cred, NFSPROC_T *p, void *stuff) 5841 { 5842 uint32_t *tl; 5843 struct nfsrv_descript nfsd, *nd = &nfsd; 5844 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 5845 struct nfssockreq *nrp; 5846 int error; 5847 5848 nfscl_reqstart(nd, NFSPROC_COMMITDS, nmp, fhp->nfh_fh, fhp->nfh_len, 5849 NULL, &dsp->nfsclds_sess); 5850 NFSM_BUILD(tl, uint32_t *, NFSX_HYPER + NFSX_UNSIGNED); 5851 txdr_hyper(offset, tl); 5852 tl += 2; 5853 *tl = txdr_unsigned(cnt); 5854 nrp = dsp->nfsclds_sockp; 5855 if (nrp == NULL) 5856 /* If NULL, use the MDS socket. */ 5857 nrp = &nmp->nm_sockreq; 5858 error = newnfs_request(nd, nmp, NULL, nrp, vp, p, cred, 5859 NFS_PROG, NFS_VER4, NULL, 1, NULL, &dsp->nfsclds_sess); 5860 if (error) 5861 return (error); 5862 if (nd->nd_repstat == 0) { 5863 NFSM_DISSECT(tl, u_int32_t *, NFSX_VERF); 5864 NFSLOCKDS(dsp); 5865 if (NFSBCMP(tl, dsp->nfsclds_verf, NFSX_VERF)) { 5866 NFSBCOPY(tl, dsp->nfsclds_verf, NFSX_VERF); 5867 error = NFSERR_STALEWRITEVERF; 5868 } 5869 NFSUNLOCKDS(dsp); 5870 } 5871 nfsmout: 5872 if (error == 0 && nd->nd_repstat != 0) 5873 error = nd->nd_repstat; 5874 mbuf_freem(nd->nd_mrep); 5875 return (error); 5876 } 5877 #endif 5878 5879