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 if (ret == NFSERR_STALECLIENTID || 543 ret == NFSERR_STALEDONTRECOVER || 544 ret == NFSERR_BADSESSION) 545 error = ret; 546 } 547 } 548 } 549 if (nd->nd_repstat != 0 && error == 0) 550 error = nd->nd_repstat; 551 if (error == NFSERR_STALECLIENTID || error == NFSERR_BADSESSION) 552 nfscl_initiate_recovery(op->nfso_own->nfsow_clp); 553 nfsmout: 554 if (!error) 555 *dpp = ndp; 556 else if (ndp != NULL) 557 FREE((caddr_t)ndp, M_NFSCLDELEG); 558 mbuf_freem(nd->nd_mrep); 559 return (error); 560 } 561 562 /* 563 * open downgrade rpc 564 */ 565 APPLESTATIC int 566 nfsrpc_opendowngrade(vnode_t vp, u_int32_t mode, struct nfsclopen *op, 567 struct ucred *cred, NFSPROC_T *p) 568 { 569 u_int32_t *tl; 570 struct nfsrv_descript nfsd, *nd = &nfsd; 571 int error; 572 573 NFSCL_REQSTART(nd, NFSPROC_OPENDOWNGRADE, vp); 574 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID + 3 * NFSX_UNSIGNED); 575 if (NFSHASNFSV4N(VFSTONFS(vnode_mount(vp)))) 576 *tl++ = 0; 577 else 578 *tl++ = op->nfso_stateid.seqid; 579 *tl++ = op->nfso_stateid.other[0]; 580 *tl++ = op->nfso_stateid.other[1]; 581 *tl++ = op->nfso_stateid.other[2]; 582 *tl++ = txdr_unsigned(op->nfso_own->nfsow_seqid); 583 *tl++ = txdr_unsigned(mode & NFSV4OPEN_ACCESSBOTH); 584 *tl = txdr_unsigned((mode >> NFSLCK_SHIFT) & NFSV4OPEN_DENYBOTH); 585 error = nfscl_request(nd, vp, p, cred, NULL); 586 if (error) 587 return (error); 588 NFSCL_INCRSEQID(op->nfso_own->nfsow_seqid, nd); 589 if (!nd->nd_repstat) { 590 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID); 591 op->nfso_stateid.seqid = *tl++; 592 op->nfso_stateid.other[0] = *tl++; 593 op->nfso_stateid.other[1] = *tl++; 594 op->nfso_stateid.other[2] = *tl; 595 } 596 if (nd->nd_repstat && error == 0) 597 error = nd->nd_repstat; 598 if (error == NFSERR_STALESTATEID || error == NFSERR_BADSESSION) 599 nfscl_initiate_recovery(op->nfso_own->nfsow_clp); 600 nfsmout: 601 mbuf_freem(nd->nd_mrep); 602 return (error); 603 } 604 605 /* 606 * V4 Close operation. 607 */ 608 APPLESTATIC int 609 nfsrpc_close(vnode_t vp, int doclose, NFSPROC_T *p) 610 { 611 struct nfsclclient *clp; 612 int error; 613 614 if (vnode_vtype(vp) != VREG) 615 return (0); 616 if (doclose) 617 error = nfscl_doclose(vp, &clp, p); 618 else 619 error = nfscl_getclose(vp, &clp); 620 if (error) 621 return (error); 622 623 nfscl_clientrelease(clp); 624 return (0); 625 } 626 627 /* 628 * Close the open. 629 */ 630 APPLESTATIC void 631 nfsrpc_doclose(struct nfsmount *nmp, struct nfsclopen *op, NFSPROC_T *p) 632 { 633 struct nfsrv_descript nfsd, *nd = &nfsd; 634 struct nfscllockowner *lp, *nlp; 635 struct nfscllock *lop, *nlop; 636 struct ucred *tcred; 637 u_int64_t off = 0, len = 0; 638 u_int32_t type = NFSV4LOCKT_READ; 639 int error, do_unlock, trycnt; 640 641 tcred = newnfs_getcred(); 642 newnfs_copycred(&op->nfso_cred, tcred); 643 /* 644 * (Theoretically this could be done in the same 645 * compound as the close, but having multiple 646 * sequenced Ops in the same compound might be 647 * too scary for some servers.) 648 */ 649 if (op->nfso_posixlock) { 650 off = 0; 651 len = NFS64BITSSET; 652 type = NFSV4LOCKT_READ; 653 } 654 655 /* 656 * Since this function is only called from VOP_INACTIVE(), no 657 * other thread will be manipulating this Open. As such, the 658 * lock lists are not being changed by other threads, so it should 659 * be safe to do this without locking. 660 */ 661 LIST_FOREACH(lp, &op->nfso_lock, nfsl_list) { 662 do_unlock = 1; 663 LIST_FOREACH_SAFE(lop, &lp->nfsl_lock, nfslo_list, nlop) { 664 if (op->nfso_posixlock == 0) { 665 off = lop->nfslo_first; 666 len = lop->nfslo_end - lop->nfslo_first; 667 if (lop->nfslo_type == F_WRLCK) 668 type = NFSV4LOCKT_WRITE; 669 else 670 type = NFSV4LOCKT_READ; 671 } 672 if (do_unlock) { 673 trycnt = 0; 674 do { 675 error = nfsrpc_locku(nd, nmp, lp, off, 676 len, type, tcred, p, 0); 677 if ((nd->nd_repstat == NFSERR_GRACE || 678 nd->nd_repstat == NFSERR_DELAY) && 679 error == 0) 680 (void) nfs_catnap(PZERO, 681 (int)nd->nd_repstat, 682 "nfs_close"); 683 } while ((nd->nd_repstat == NFSERR_GRACE || 684 nd->nd_repstat == NFSERR_DELAY) && 685 error == 0 && trycnt++ < 5); 686 if (op->nfso_posixlock) 687 do_unlock = 0; 688 } 689 nfscl_freelock(lop, 0); 690 } 691 /* 692 * Do a ReleaseLockOwner. 693 * The lock owner name nfsl_owner may be used by other opens for 694 * other files but the lock_owner4 name that nfsrpc_rellockown() 695 * puts on the wire has the file handle for this file appended 696 * to it, so it can be done now. 697 */ 698 (void)nfsrpc_rellockown(nmp, lp, lp->nfsl_open->nfso_fh, 699 lp->nfsl_open->nfso_fhlen, tcred, p); 700 } 701 702 /* 703 * There could be other Opens for different files on the same 704 * OpenOwner, so locking is required. 705 */ 706 NFSLOCKCLSTATE(); 707 nfscl_lockexcl(&op->nfso_own->nfsow_rwlock, NFSCLSTATEMUTEXPTR); 708 NFSUNLOCKCLSTATE(); 709 do { 710 error = nfscl_tryclose(op, tcred, nmp, p); 711 if (error == NFSERR_GRACE) 712 (void) nfs_catnap(PZERO, error, "nfs_close"); 713 } while (error == NFSERR_GRACE); 714 NFSLOCKCLSTATE(); 715 nfscl_lockunlock(&op->nfso_own->nfsow_rwlock); 716 717 LIST_FOREACH_SAFE(lp, &op->nfso_lock, nfsl_list, nlp) 718 nfscl_freelockowner(lp, 0); 719 nfscl_freeopen(op, 0); 720 NFSUNLOCKCLSTATE(); 721 NFSFREECRED(tcred); 722 } 723 724 /* 725 * The actual Close RPC. 726 */ 727 APPLESTATIC int 728 nfsrpc_closerpc(struct nfsrv_descript *nd, struct nfsmount *nmp, 729 struct nfsclopen *op, struct ucred *cred, NFSPROC_T *p, 730 int syscred) 731 { 732 u_int32_t *tl; 733 int error; 734 735 nfscl_reqstart(nd, NFSPROC_CLOSE, nmp, op->nfso_fh, 736 op->nfso_fhlen, NULL, NULL); 737 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED + NFSX_STATEID); 738 *tl++ = txdr_unsigned(op->nfso_own->nfsow_seqid); 739 if (NFSHASNFSV4N(nmp)) 740 *tl++ = 0; 741 else 742 *tl++ = op->nfso_stateid.seqid; 743 *tl++ = op->nfso_stateid.other[0]; 744 *tl++ = op->nfso_stateid.other[1]; 745 *tl = op->nfso_stateid.other[2]; 746 if (syscred) 747 nd->nd_flag |= ND_USEGSSNAME; 748 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 749 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 750 if (error) 751 return (error); 752 NFSCL_INCRSEQID(op->nfso_own->nfsow_seqid, nd); 753 if (nd->nd_repstat == 0) 754 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID); 755 error = nd->nd_repstat; 756 if (error == NFSERR_STALESTATEID || error == NFSERR_BADSESSION) 757 nfscl_initiate_recovery(op->nfso_own->nfsow_clp); 758 nfsmout: 759 mbuf_freem(nd->nd_mrep); 760 return (error); 761 } 762 763 /* 764 * V4 Open Confirm RPC. 765 */ 766 APPLESTATIC int 767 nfsrpc_openconfirm(vnode_t vp, u_int8_t *nfhp, int fhlen, 768 struct nfsclopen *op, struct ucred *cred, NFSPROC_T *p) 769 { 770 u_int32_t *tl; 771 struct nfsrv_descript nfsd, *nd = &nfsd; 772 struct nfsmount *nmp; 773 int error; 774 775 nmp = VFSTONFS(vnode_mount(vp)); 776 if (NFSHASNFSV4N(nmp)) 777 return (0); /* No confirmation for NFSv4.1. */ 778 nfscl_reqstart(nd, NFSPROC_OPENCONFIRM, nmp, nfhp, fhlen, NULL, NULL); 779 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED + NFSX_STATEID); 780 *tl++ = op->nfso_stateid.seqid; 781 *tl++ = op->nfso_stateid.other[0]; 782 *tl++ = op->nfso_stateid.other[1]; 783 *tl++ = op->nfso_stateid.other[2]; 784 *tl = txdr_unsigned(op->nfso_own->nfsow_seqid); 785 error = nfscl_request(nd, vp, p, cred, NULL); 786 if (error) 787 return (error); 788 NFSCL_INCRSEQID(op->nfso_own->nfsow_seqid, nd); 789 if (!nd->nd_repstat) { 790 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID); 791 op->nfso_stateid.seqid = *tl++; 792 op->nfso_stateid.other[0] = *tl++; 793 op->nfso_stateid.other[1] = *tl++; 794 op->nfso_stateid.other[2] = *tl; 795 } 796 error = nd->nd_repstat; 797 if (error == NFSERR_STALESTATEID || error == NFSERR_BADSESSION) 798 nfscl_initiate_recovery(op->nfso_own->nfsow_clp); 799 nfsmout: 800 mbuf_freem(nd->nd_mrep); 801 return (error); 802 } 803 804 /* 805 * Do the setclientid and setclientid confirm RPCs. Called from nfs_statfs() 806 * when a mount has just occurred and when the server replies NFSERR_EXPIRED. 807 */ 808 APPLESTATIC int 809 nfsrpc_setclient(struct nfsmount *nmp, struct nfsclclient *clp, int reclaim, 810 struct ucred *cred, NFSPROC_T *p) 811 { 812 u_int32_t *tl; 813 struct nfsrv_descript nfsd; 814 struct nfsrv_descript *nd = &nfsd; 815 nfsattrbit_t attrbits; 816 u_int8_t *cp = NULL, *cp2, addr[INET6_ADDRSTRLEN + 9]; 817 u_short port; 818 int error, isinet6 = 0, callblen; 819 nfsquad_t confirm; 820 u_int32_t lease; 821 static u_int32_t rev = 0; 822 struct nfsclds *dsp, *ndsp, *tdsp; 823 824 if (nfsboottime.tv_sec == 0) 825 NFSSETBOOTTIME(nfsboottime); 826 clp->nfsc_rev = rev++; 827 if (NFSHASNFSV4N(nmp)) { 828 error = nfsrpc_exchangeid(nmp, clp, &nmp->nm_sockreq, 829 NFSV4EXCH_USEPNFSMDS | NFSV4EXCH_USENONPNFS, &dsp, cred, p); 830 NFSCL_DEBUG(1, "aft exch=%d\n", error); 831 if (error == 0) { 832 error = nfsrpc_createsession(nmp, &dsp->nfsclds_sess, 833 &nmp->nm_sockreq, 834 dsp->nfsclds_sess.nfsess_sequenceid, 1, cred, p); 835 if (error == 0) { 836 NFSLOCKMNT(nmp); 837 TAILQ_FOREACH_SAFE(tdsp, &nmp->nm_sess, 838 nfsclds_list, ndsp) 839 nfscl_freenfsclds(tdsp); 840 TAILQ_INIT(&nmp->nm_sess); 841 TAILQ_INSERT_HEAD(&nmp->nm_sess, dsp, 842 nfsclds_list); 843 NFSUNLOCKMNT(nmp); 844 } else 845 nfscl_freenfsclds(dsp); 846 NFSCL_DEBUG(1, "aft createsess=%d\n", error); 847 } 848 if (error == 0 && reclaim == 0) { 849 error = nfsrpc_reclaimcomplete(nmp, cred, p); 850 NFSCL_DEBUG(1, "aft reclaimcomp=%d\n", error); 851 if (error == NFSERR_COMPLETEALREADY || 852 error == NFSERR_NOTSUPP) 853 /* Ignore this error. */ 854 error = 0; 855 } 856 return (error); 857 } 858 859 /* 860 * Allocate a single session structure for NFSv4.0, because some of 861 * the fields are used by NFSv4.0 although it doesn't do a session. 862 */ 863 dsp = malloc(sizeof(struct nfsclds), M_NFSCLDS, M_WAITOK | M_ZERO); 864 mtx_init(&dsp->nfsclds_mtx, "nfsds", NULL, MTX_DEF); 865 mtx_init(&dsp->nfsclds_sess.nfsess_mtx, "nfssession", NULL, MTX_DEF); 866 NFSLOCKMNT(nmp); 867 TAILQ_INSERT_HEAD(&nmp->nm_sess, dsp, nfsclds_list); 868 NFSUNLOCKMNT(nmp); 869 870 nfscl_reqstart(nd, NFSPROC_SETCLIENTID, nmp, NULL, 0, NULL, NULL); 871 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 872 *tl++ = txdr_unsigned(nfsboottime.tv_sec); 873 *tl = txdr_unsigned(clp->nfsc_rev); 874 (void) nfsm_strtom(nd, clp->nfsc_id, clp->nfsc_idlen); 875 876 /* 877 * set up the callback address 878 */ 879 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 880 *tl = txdr_unsigned(NFS_CALLBCKPROG); 881 callblen = strlen(nfsv4_callbackaddr); 882 if (callblen == 0) 883 cp = nfscl_getmyip(nmp, &isinet6); 884 if (nfscl_enablecallb && nfs_numnfscbd > 0 && 885 (callblen > 0 || cp != NULL)) { 886 port = htons(nfsv4_cbport); 887 cp2 = (u_int8_t *)&port; 888 #ifdef INET6 889 if ((callblen > 0 && 890 strchr(nfsv4_callbackaddr, ':')) || isinet6) { 891 char ip6buf[INET6_ADDRSTRLEN], *ip6add; 892 893 (void) nfsm_strtom(nd, "tcp6", 4); 894 if (callblen == 0) { 895 ip6_sprintf(ip6buf, (struct in6_addr *)cp); 896 ip6add = ip6buf; 897 } else { 898 ip6add = nfsv4_callbackaddr; 899 } 900 snprintf(addr, INET6_ADDRSTRLEN + 9, "%s.%d.%d", 901 ip6add, cp2[0], cp2[1]); 902 } else 903 #endif 904 { 905 (void) nfsm_strtom(nd, "tcp", 3); 906 if (callblen == 0) 907 snprintf(addr, INET6_ADDRSTRLEN + 9, 908 "%d.%d.%d.%d.%d.%d", cp[0], cp[1], 909 cp[2], cp[3], cp2[0], cp2[1]); 910 else 911 snprintf(addr, INET6_ADDRSTRLEN + 9, 912 "%s.%d.%d", nfsv4_callbackaddr, 913 cp2[0], cp2[1]); 914 } 915 (void) nfsm_strtom(nd, addr, strlen(addr)); 916 } else { 917 (void) nfsm_strtom(nd, "tcp", 3); 918 (void) nfsm_strtom(nd, "0.0.0.0.0.0", 11); 919 } 920 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 921 *tl = txdr_unsigned(clp->nfsc_cbident); 922 nd->nd_flag |= ND_USEGSSNAME; 923 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 924 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 925 if (error) 926 return (error); 927 if (nd->nd_repstat == 0) { 928 NFSM_DISSECT(tl, u_int32_t *, 4 * NFSX_UNSIGNED); 929 NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[0] = *tl++; 930 NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[1] = *tl++; 931 confirm.lval[0] = *tl++; 932 confirm.lval[1] = *tl; 933 mbuf_freem(nd->nd_mrep); 934 nd->nd_mrep = NULL; 935 936 /* 937 * and confirm it. 938 */ 939 nfscl_reqstart(nd, NFSPROC_SETCLIENTIDCFRM, nmp, NULL, 0, NULL, 940 NULL); 941 NFSM_BUILD(tl, u_int32_t *, 4 * NFSX_UNSIGNED); 942 *tl++ = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[0]; 943 *tl++ = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[1]; 944 *tl++ = confirm.lval[0]; 945 *tl = confirm.lval[1]; 946 nd->nd_flag |= ND_USEGSSNAME; 947 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, 948 cred, NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 949 if (error) 950 return (error); 951 mbuf_freem(nd->nd_mrep); 952 nd->nd_mrep = NULL; 953 if (nd->nd_repstat == 0) { 954 nfscl_reqstart(nd, NFSPROC_GETATTR, nmp, nmp->nm_fh, 955 nmp->nm_fhsize, NULL, NULL); 956 NFSZERO_ATTRBIT(&attrbits); 957 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_LEASETIME); 958 (void) nfsrv_putattrbit(nd, &attrbits); 959 nd->nd_flag |= ND_USEGSSNAME; 960 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, 961 cred, NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 962 if (error) 963 return (error); 964 if (nd->nd_repstat == 0) { 965 error = nfsv4_loadattr(nd, NULL, NULL, NULL, NULL, 0, NULL, 966 NULL, NULL, NULL, NULL, 0, NULL, &lease, NULL, p, cred); 967 if (error) 968 goto nfsmout; 969 clp->nfsc_renew = NFSCL_RENEW(lease); 970 clp->nfsc_expire = NFSD_MONOSEC + clp->nfsc_renew; 971 clp->nfsc_clientidrev++; 972 if (clp->nfsc_clientidrev == 0) 973 clp->nfsc_clientidrev++; 974 } 975 } 976 } 977 error = nd->nd_repstat; 978 nfsmout: 979 mbuf_freem(nd->nd_mrep); 980 return (error); 981 } 982 983 /* 984 * nfs getattr call. 985 */ 986 APPLESTATIC int 987 nfsrpc_getattr(vnode_t vp, struct ucred *cred, NFSPROC_T *p, 988 struct nfsvattr *nap, void *stuff) 989 { 990 struct nfsrv_descript nfsd, *nd = &nfsd; 991 int error; 992 nfsattrbit_t attrbits; 993 994 NFSCL_REQSTART(nd, NFSPROC_GETATTR, vp); 995 if (nd->nd_flag & ND_NFSV4) { 996 NFSGETATTR_ATTRBIT(&attrbits); 997 (void) nfsrv_putattrbit(nd, &attrbits); 998 } 999 error = nfscl_request(nd, vp, p, cred, stuff); 1000 if (error) 1001 return (error); 1002 if (!nd->nd_repstat) 1003 error = nfsm_loadattr(nd, nap); 1004 else 1005 error = nd->nd_repstat; 1006 mbuf_freem(nd->nd_mrep); 1007 return (error); 1008 } 1009 1010 /* 1011 * nfs getattr call with non-vnode arguemnts. 1012 */ 1013 APPLESTATIC int 1014 nfsrpc_getattrnovp(struct nfsmount *nmp, u_int8_t *fhp, int fhlen, int syscred, 1015 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, u_int64_t *xidp, 1016 uint32_t *leasep) 1017 { 1018 struct nfsrv_descript nfsd, *nd = &nfsd; 1019 int error, vers = NFS_VER2; 1020 nfsattrbit_t attrbits; 1021 1022 nfscl_reqstart(nd, NFSPROC_GETATTR, nmp, fhp, fhlen, NULL, NULL); 1023 if (nd->nd_flag & ND_NFSV4) { 1024 vers = NFS_VER4; 1025 NFSGETATTR_ATTRBIT(&attrbits); 1026 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_LEASETIME); 1027 (void) nfsrv_putattrbit(nd, &attrbits); 1028 } else if (nd->nd_flag & ND_NFSV3) { 1029 vers = NFS_VER3; 1030 } 1031 if (syscred) 1032 nd->nd_flag |= ND_USEGSSNAME; 1033 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 1034 NFS_PROG, vers, NULL, 1, xidp, NULL); 1035 if (error) 1036 return (error); 1037 if (nd->nd_repstat == 0) { 1038 if ((nd->nd_flag & ND_NFSV4) != 0) 1039 error = nfsv4_loadattr(nd, NULL, nap, NULL, NULL, 0, 1040 NULL, NULL, NULL, NULL, NULL, 0, NULL, leasep, NULL, 1041 NULL, NULL); 1042 else 1043 error = nfsm_loadattr(nd, nap); 1044 } else 1045 error = nd->nd_repstat; 1046 mbuf_freem(nd->nd_mrep); 1047 return (error); 1048 } 1049 1050 /* 1051 * Do an nfs setattr operation. 1052 */ 1053 APPLESTATIC int 1054 nfsrpc_setattr(vnode_t vp, struct vattr *vap, NFSACL_T *aclp, 1055 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *rnap, int *attrflagp, 1056 void *stuff) 1057 { 1058 int error, expireret = 0, openerr, retrycnt; 1059 u_int32_t clidrev = 0, mode; 1060 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 1061 struct nfsfh *nfhp; 1062 nfsv4stateid_t stateid; 1063 void *lckp; 1064 1065 if (nmp->nm_clp != NULL) 1066 clidrev = nmp->nm_clp->nfsc_clientidrev; 1067 if (vap != NULL && NFSATTRISSET(u_quad_t, vap, va_size)) 1068 mode = NFSV4OPEN_ACCESSWRITE; 1069 else 1070 mode = NFSV4OPEN_ACCESSREAD; 1071 retrycnt = 0; 1072 do { 1073 lckp = NULL; 1074 openerr = 1; 1075 if (NFSHASNFSV4(nmp)) { 1076 nfhp = VTONFS(vp)->n_fhp; 1077 error = nfscl_getstateid(vp, nfhp->nfh_fh, 1078 nfhp->nfh_len, mode, 0, cred, p, &stateid, &lckp); 1079 if (error && vnode_vtype(vp) == VREG && 1080 (mode == NFSV4OPEN_ACCESSWRITE || 1081 nfstest_openallsetattr)) { 1082 /* 1083 * No Open stateid, so try and open the file 1084 * now. 1085 */ 1086 if (mode == NFSV4OPEN_ACCESSWRITE) 1087 openerr = nfsrpc_open(vp, FWRITE, cred, 1088 p); 1089 else 1090 openerr = nfsrpc_open(vp, FREAD, cred, 1091 p); 1092 if (!openerr) 1093 (void) nfscl_getstateid(vp, 1094 nfhp->nfh_fh, nfhp->nfh_len, 1095 mode, 0, cred, p, &stateid, &lckp); 1096 } 1097 } 1098 if (vap != NULL) 1099 error = nfsrpc_setattrrpc(vp, vap, &stateid, cred, p, 1100 rnap, attrflagp, stuff); 1101 else 1102 error = nfsrpc_setaclrpc(vp, cred, p, aclp, &stateid, 1103 stuff); 1104 if (error == NFSERR_STALESTATEID || error == NFSERR_BADSESSION) 1105 nfscl_initiate_recovery(nmp->nm_clp); 1106 if (lckp != NULL) 1107 nfscl_lockderef(lckp); 1108 if (!openerr) 1109 (void) nfsrpc_close(vp, 0, p); 1110 if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 1111 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 1112 error == NFSERR_OLDSTATEID || error == NFSERR_BADSESSION) { 1113 (void) nfs_catnap(PZERO, error, "nfs_setattr"); 1114 } else if ((error == NFSERR_EXPIRED || 1115 error == NFSERR_BADSTATEID) && clidrev != 0) { 1116 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p); 1117 } 1118 retrycnt++; 1119 } while (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 1120 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 1121 error == NFSERR_BADSESSION || 1122 (error == NFSERR_OLDSTATEID && retrycnt < 20) || 1123 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) && 1124 expireret == 0 && clidrev != 0 && retrycnt < 4)); 1125 if (error && retrycnt >= 4) 1126 error = EIO; 1127 return (error); 1128 } 1129 1130 static int 1131 nfsrpc_setattrrpc(vnode_t vp, struct vattr *vap, 1132 nfsv4stateid_t *stateidp, struct ucred *cred, NFSPROC_T *p, 1133 struct nfsvattr *rnap, int *attrflagp, void *stuff) 1134 { 1135 u_int32_t *tl; 1136 struct nfsrv_descript nfsd, *nd = &nfsd; 1137 int error; 1138 nfsattrbit_t attrbits; 1139 1140 *attrflagp = 0; 1141 NFSCL_REQSTART(nd, NFSPROC_SETATTR, vp); 1142 if (nd->nd_flag & ND_NFSV4) 1143 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID); 1144 vap->va_type = vnode_vtype(vp); 1145 nfscl_fillsattr(nd, vap, vp, NFSSATTR_FULL, 0); 1146 if (nd->nd_flag & ND_NFSV3) { 1147 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1148 *tl = newnfs_false; 1149 } else if (nd->nd_flag & ND_NFSV4) { 1150 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1151 *tl = txdr_unsigned(NFSV4OP_GETATTR); 1152 NFSGETATTR_ATTRBIT(&attrbits); 1153 (void) nfsrv_putattrbit(nd, &attrbits); 1154 } 1155 error = nfscl_request(nd, vp, p, cred, stuff); 1156 if (error) 1157 return (error); 1158 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) 1159 error = nfscl_wcc_data(nd, vp, rnap, attrflagp, NULL, stuff); 1160 if ((nd->nd_flag & ND_NFSV4) && !error) 1161 error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL); 1162 if (!(nd->nd_flag & ND_NFSV3) && !nd->nd_repstat && !error) 1163 error = nfscl_postop_attr(nd, rnap, attrflagp, stuff); 1164 mbuf_freem(nd->nd_mrep); 1165 if (nd->nd_repstat && !error) 1166 error = nd->nd_repstat; 1167 return (error); 1168 } 1169 1170 /* 1171 * nfs lookup rpc 1172 */ 1173 APPLESTATIC int 1174 nfsrpc_lookup(vnode_t dvp, char *name, int len, struct ucred *cred, 1175 NFSPROC_T *p, struct nfsvattr *dnap, struct nfsvattr *nap, 1176 struct nfsfh **nfhpp, int *attrflagp, int *dattrflagp, void *stuff) 1177 { 1178 u_int32_t *tl; 1179 struct nfsrv_descript nfsd, *nd = &nfsd; 1180 struct nfsmount *nmp; 1181 struct nfsnode *np; 1182 struct nfsfh *nfhp; 1183 nfsattrbit_t attrbits; 1184 int error = 0, lookupp = 0; 1185 1186 *attrflagp = 0; 1187 *dattrflagp = 0; 1188 if (vnode_vtype(dvp) != VDIR) 1189 return (ENOTDIR); 1190 nmp = VFSTONFS(vnode_mount(dvp)); 1191 if (len > NFS_MAXNAMLEN) 1192 return (ENAMETOOLONG); 1193 if (NFSHASNFSV4(nmp) && len == 1 && 1194 name[0] == '.') { 1195 /* 1196 * Just return the current dir's fh. 1197 */ 1198 np = VTONFS(dvp); 1199 MALLOC(nfhp, struct nfsfh *, sizeof (struct nfsfh) + 1200 np->n_fhp->nfh_len, M_NFSFH, M_WAITOK); 1201 nfhp->nfh_len = np->n_fhp->nfh_len; 1202 NFSBCOPY(np->n_fhp->nfh_fh, nfhp->nfh_fh, nfhp->nfh_len); 1203 *nfhpp = nfhp; 1204 return (0); 1205 } 1206 if (NFSHASNFSV4(nmp) && len == 2 && 1207 name[0] == '.' && name[1] == '.') { 1208 lookupp = 1; 1209 NFSCL_REQSTART(nd, NFSPROC_LOOKUPP, dvp); 1210 } else { 1211 NFSCL_REQSTART(nd, NFSPROC_LOOKUP, dvp); 1212 (void) nfsm_strtom(nd, name, len); 1213 } 1214 if (nd->nd_flag & ND_NFSV4) { 1215 NFSGETATTR_ATTRBIT(&attrbits); 1216 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1217 *tl++ = txdr_unsigned(NFSV4OP_GETFH); 1218 *tl = txdr_unsigned(NFSV4OP_GETATTR); 1219 (void) nfsrv_putattrbit(nd, &attrbits); 1220 } 1221 error = nfscl_request(nd, dvp, p, cred, stuff); 1222 if (error) 1223 return (error); 1224 if (nd->nd_repstat) { 1225 /* 1226 * When an NFSv4 Lookupp returns ENOENT, it means that 1227 * the lookup is at the root of an fs, so return this dir. 1228 */ 1229 if (nd->nd_repstat == NFSERR_NOENT && lookupp) { 1230 np = VTONFS(dvp); 1231 MALLOC(nfhp, struct nfsfh *, sizeof (struct nfsfh) + 1232 np->n_fhp->nfh_len, M_NFSFH, M_WAITOK); 1233 nfhp->nfh_len = np->n_fhp->nfh_len; 1234 NFSBCOPY(np->n_fhp->nfh_fh, nfhp->nfh_fh, nfhp->nfh_len); 1235 *nfhpp = nfhp; 1236 mbuf_freem(nd->nd_mrep); 1237 return (0); 1238 } 1239 if (nd->nd_flag & ND_NFSV3) 1240 error = nfscl_postop_attr(nd, dnap, dattrflagp, stuff); 1241 goto nfsmout; 1242 } 1243 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == ND_NFSV4) { 1244 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1245 if (*(tl + 1)) { 1246 nd->nd_flag |= ND_NOMOREDATA; 1247 goto nfsmout; 1248 } 1249 } 1250 error = nfsm_getfh(nd, nfhpp); 1251 if (error) 1252 goto nfsmout; 1253 1254 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 1255 if ((nd->nd_flag & ND_NFSV3) && !error) 1256 error = nfscl_postop_attr(nd, dnap, dattrflagp, stuff); 1257 nfsmout: 1258 mbuf_freem(nd->nd_mrep); 1259 if (!error && nd->nd_repstat) 1260 error = nd->nd_repstat; 1261 return (error); 1262 } 1263 1264 /* 1265 * Do a readlink rpc. 1266 */ 1267 APPLESTATIC int 1268 nfsrpc_readlink(vnode_t vp, struct uio *uiop, struct ucred *cred, 1269 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff) 1270 { 1271 u_int32_t *tl; 1272 struct nfsrv_descript nfsd, *nd = &nfsd; 1273 struct nfsnode *np = VTONFS(vp); 1274 nfsattrbit_t attrbits; 1275 int error, len, cangetattr = 1; 1276 1277 *attrflagp = 0; 1278 NFSCL_REQSTART(nd, NFSPROC_READLINK, vp); 1279 if (nd->nd_flag & ND_NFSV4) { 1280 /* 1281 * And do a Getattr op. 1282 */ 1283 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1284 *tl = txdr_unsigned(NFSV4OP_GETATTR); 1285 NFSGETATTR_ATTRBIT(&attrbits); 1286 (void) nfsrv_putattrbit(nd, &attrbits); 1287 } 1288 error = nfscl_request(nd, vp, p, cred, stuff); 1289 if (error) 1290 return (error); 1291 if (nd->nd_flag & ND_NFSV3) 1292 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 1293 if (!nd->nd_repstat && !error) { 1294 NFSM_STRSIZ(len, NFS_MAXPATHLEN); 1295 /* 1296 * This seems weird to me, but must have been added to 1297 * FreeBSD for some reason. The only thing I can think of 1298 * is that there was/is some server that replies with 1299 * more link data than it should? 1300 */ 1301 if (len == NFS_MAXPATHLEN) { 1302 NFSLOCKNODE(np); 1303 if (np->n_size > 0 && np->n_size < NFS_MAXPATHLEN) { 1304 len = np->n_size; 1305 cangetattr = 0; 1306 } 1307 NFSUNLOCKNODE(np); 1308 } 1309 error = nfsm_mbufuio(nd, uiop, len); 1310 if ((nd->nd_flag & ND_NFSV4) && !error && cangetattr) 1311 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 1312 } 1313 if (nd->nd_repstat && !error) 1314 error = nd->nd_repstat; 1315 nfsmout: 1316 mbuf_freem(nd->nd_mrep); 1317 return (error); 1318 } 1319 1320 /* 1321 * Read operation. 1322 */ 1323 APPLESTATIC int 1324 nfsrpc_read(vnode_t vp, struct uio *uiop, struct ucred *cred, 1325 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff) 1326 { 1327 int error, expireret = 0, retrycnt; 1328 u_int32_t clidrev = 0; 1329 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 1330 struct nfsnode *np = VTONFS(vp); 1331 struct ucred *newcred; 1332 struct nfsfh *nfhp = NULL; 1333 nfsv4stateid_t stateid; 1334 void *lckp; 1335 1336 if (nmp->nm_clp != NULL) 1337 clidrev = nmp->nm_clp->nfsc_clientidrev; 1338 newcred = cred; 1339 if (NFSHASNFSV4(nmp)) { 1340 nfhp = np->n_fhp; 1341 newcred = NFSNEWCRED(cred); 1342 } 1343 retrycnt = 0; 1344 do { 1345 lckp = NULL; 1346 if (NFSHASNFSV4(nmp)) 1347 (void)nfscl_getstateid(vp, nfhp->nfh_fh, nfhp->nfh_len, 1348 NFSV4OPEN_ACCESSREAD, 0, newcred, p, &stateid, 1349 &lckp); 1350 error = nfsrpc_readrpc(vp, uiop, newcred, &stateid, p, nap, 1351 attrflagp, stuff); 1352 if (error == NFSERR_STALESTATEID || error == NFSERR_BADSESSION) 1353 nfscl_initiate_recovery(nmp->nm_clp); 1354 if (lckp != NULL) 1355 nfscl_lockderef(lckp); 1356 if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 1357 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 1358 error == NFSERR_OLDSTATEID || error == NFSERR_BADSESSION) { 1359 (void) nfs_catnap(PZERO, error, "nfs_read"); 1360 } else if ((error == NFSERR_EXPIRED || 1361 error == NFSERR_BADSTATEID) && clidrev != 0) { 1362 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p); 1363 } 1364 retrycnt++; 1365 } while (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 1366 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 1367 error == NFSERR_BADSESSION || 1368 (error == NFSERR_OLDSTATEID && retrycnt < 20) || 1369 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) && 1370 expireret == 0 && clidrev != 0 && retrycnt < 4)); 1371 if (error && retrycnt >= 4) 1372 error = EIO; 1373 if (NFSHASNFSV4(nmp)) 1374 NFSFREECRED(newcred); 1375 return (error); 1376 } 1377 1378 /* 1379 * The actual read RPC. 1380 */ 1381 static int 1382 nfsrpc_readrpc(vnode_t vp, struct uio *uiop, struct ucred *cred, 1383 nfsv4stateid_t *stateidp, NFSPROC_T *p, struct nfsvattr *nap, 1384 int *attrflagp, void *stuff) 1385 { 1386 u_int32_t *tl; 1387 int error = 0, len, retlen, tsiz, eof = 0; 1388 struct nfsrv_descript nfsd; 1389 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 1390 struct nfsrv_descript *nd = &nfsd; 1391 int rsize; 1392 off_t tmp_off; 1393 1394 *attrflagp = 0; 1395 tsiz = uio_uio_resid(uiop); 1396 tmp_off = uiop->uio_offset + tsiz; 1397 NFSLOCKMNT(nmp); 1398 if (tmp_off > nmp->nm_maxfilesize || tmp_off < uiop->uio_offset) { 1399 NFSUNLOCKMNT(nmp); 1400 return (EFBIG); 1401 } 1402 rsize = nmp->nm_rsize; 1403 NFSUNLOCKMNT(nmp); 1404 nd->nd_mrep = NULL; 1405 while (tsiz > 0) { 1406 *attrflagp = 0; 1407 len = (tsiz > rsize) ? rsize : tsiz; 1408 NFSCL_REQSTART(nd, NFSPROC_READ, vp); 1409 if (nd->nd_flag & ND_NFSV4) 1410 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID); 1411 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED * 3); 1412 if (nd->nd_flag & ND_NFSV2) { 1413 *tl++ = txdr_unsigned(uiop->uio_offset); 1414 *tl++ = txdr_unsigned(len); 1415 *tl = 0; 1416 } else { 1417 txdr_hyper(uiop->uio_offset, tl); 1418 *(tl + 2) = txdr_unsigned(len); 1419 } 1420 /* 1421 * Since I can't do a Getattr for NFSv4 for Write, there 1422 * doesn't seem any point in doing one here, either. 1423 * (See the comment in nfsrpc_writerpc() for more info.) 1424 */ 1425 error = nfscl_request(nd, vp, p, cred, stuff); 1426 if (error) 1427 return (error); 1428 if (nd->nd_flag & ND_NFSV3) { 1429 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 1430 } else if (!nd->nd_repstat && (nd->nd_flag & ND_NFSV2)) { 1431 error = nfsm_loadattr(nd, nap); 1432 if (!error) 1433 *attrflagp = 1; 1434 } 1435 if (nd->nd_repstat || error) { 1436 if (!error) 1437 error = nd->nd_repstat; 1438 goto nfsmout; 1439 } 1440 if (nd->nd_flag & ND_NFSV3) { 1441 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1442 eof = fxdr_unsigned(int, *(tl + 1)); 1443 } else if (nd->nd_flag & ND_NFSV4) { 1444 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 1445 eof = fxdr_unsigned(int, *tl); 1446 } 1447 NFSM_STRSIZ(retlen, len); 1448 error = nfsm_mbufuio(nd, uiop, retlen); 1449 if (error) 1450 goto nfsmout; 1451 mbuf_freem(nd->nd_mrep); 1452 nd->nd_mrep = NULL; 1453 tsiz -= retlen; 1454 if (!(nd->nd_flag & ND_NFSV2)) { 1455 if (eof || retlen == 0) 1456 tsiz = 0; 1457 } else if (retlen < len) 1458 tsiz = 0; 1459 } 1460 return (0); 1461 nfsmout: 1462 if (nd->nd_mrep != NULL) 1463 mbuf_freem(nd->nd_mrep); 1464 return (error); 1465 } 1466 1467 /* 1468 * nfs write operation 1469 * When called_from_strategy != 0, it should return EIO for an error that 1470 * indicates recovery is in progress, so that the buffer will be left 1471 * dirty and be written back to the server later. If it loops around, 1472 * the recovery thread could get stuck waiting for the buffer and recovery 1473 * will then deadlock. 1474 */ 1475 APPLESTATIC int 1476 nfsrpc_write(vnode_t vp, struct uio *uiop, int *iomode, int *must_commit, 1477 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, 1478 void *stuff, int called_from_strategy) 1479 { 1480 int error, expireret = 0, retrycnt, nostateid; 1481 u_int32_t clidrev = 0; 1482 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 1483 struct nfsnode *np = VTONFS(vp); 1484 struct ucred *newcred; 1485 struct nfsfh *nfhp = NULL; 1486 nfsv4stateid_t stateid; 1487 void *lckp; 1488 1489 *must_commit = 0; 1490 if (nmp->nm_clp != NULL) 1491 clidrev = nmp->nm_clp->nfsc_clientidrev; 1492 newcred = cred; 1493 if (NFSHASNFSV4(nmp)) { 1494 newcred = NFSNEWCRED(cred); 1495 nfhp = np->n_fhp; 1496 } 1497 retrycnt = 0; 1498 do { 1499 lckp = NULL; 1500 nostateid = 0; 1501 if (NFSHASNFSV4(nmp)) { 1502 (void)nfscl_getstateid(vp, nfhp->nfh_fh, nfhp->nfh_len, 1503 NFSV4OPEN_ACCESSWRITE, 0, newcred, p, &stateid, 1504 &lckp); 1505 if (stateid.other[0] == 0 && stateid.other[1] == 0 && 1506 stateid.other[2] == 0) { 1507 nostateid = 1; 1508 NFSCL_DEBUG(1, "stateid0 in write\n"); 1509 } 1510 } 1511 1512 /* 1513 * If there is no stateid for NFSv4, it means this is an 1514 * extraneous write after close. Basically a poorly 1515 * implemented buffer cache. Just don't do the write. 1516 */ 1517 if (nostateid) 1518 error = 0; 1519 else 1520 error = nfsrpc_writerpc(vp, uiop, iomode, must_commit, 1521 newcred, &stateid, p, nap, attrflagp, stuff); 1522 if (error == NFSERR_STALESTATEID || error == NFSERR_BADSESSION) 1523 nfscl_initiate_recovery(nmp->nm_clp); 1524 if (lckp != NULL) 1525 nfscl_lockderef(lckp); 1526 if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 1527 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 1528 error == NFSERR_OLDSTATEID || error == NFSERR_BADSESSION) { 1529 (void) nfs_catnap(PZERO, error, "nfs_write"); 1530 } else if ((error == NFSERR_EXPIRED || 1531 error == NFSERR_BADSTATEID) && clidrev != 0) { 1532 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p); 1533 } 1534 retrycnt++; 1535 } while (error == NFSERR_GRACE || error == NFSERR_DELAY || 1536 ((error == NFSERR_STALESTATEID || error == NFSERR_BADSESSION || 1537 error == NFSERR_STALEDONTRECOVER) && called_from_strategy == 0) || 1538 (error == NFSERR_OLDSTATEID && retrycnt < 20) || 1539 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) && 1540 expireret == 0 && clidrev != 0 && retrycnt < 4)); 1541 if (error != 0 && (retrycnt >= 4 || 1542 ((error == NFSERR_STALESTATEID || error == NFSERR_BADSESSION || 1543 error == NFSERR_STALEDONTRECOVER) && called_from_strategy != 0))) 1544 error = EIO; 1545 if (NFSHASNFSV4(nmp)) 1546 NFSFREECRED(newcred); 1547 return (error); 1548 } 1549 1550 /* 1551 * The actual write RPC. 1552 */ 1553 static int 1554 nfsrpc_writerpc(vnode_t vp, struct uio *uiop, int *iomode, 1555 int *must_commit, struct ucred *cred, nfsv4stateid_t *stateidp, 1556 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff) 1557 { 1558 u_int32_t *tl; 1559 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 1560 struct nfsnode *np = VTONFS(vp); 1561 int error = 0, len, tsiz, rlen, commit, committed = NFSWRITE_FILESYNC; 1562 int wccflag = 0, wsize; 1563 int32_t backup; 1564 struct nfsrv_descript nfsd; 1565 struct nfsrv_descript *nd = &nfsd; 1566 nfsattrbit_t attrbits; 1567 off_t tmp_off; 1568 1569 KASSERT(uiop->uio_iovcnt == 1, ("nfs: writerpc iovcnt > 1")); 1570 *attrflagp = 0; 1571 tsiz = uio_uio_resid(uiop); 1572 tmp_off = uiop->uio_offset + tsiz; 1573 NFSLOCKMNT(nmp); 1574 if (tmp_off > nmp->nm_maxfilesize || tmp_off < uiop->uio_offset) { 1575 NFSUNLOCKMNT(nmp); 1576 return (EFBIG); 1577 } 1578 wsize = nmp->nm_wsize; 1579 NFSUNLOCKMNT(nmp); 1580 nd->nd_mrep = NULL; /* NFSv2 sometimes does a write with */ 1581 nd->nd_repstat = 0; /* uio_resid == 0, so the while is not done */ 1582 while (tsiz > 0) { 1583 *attrflagp = 0; 1584 len = (tsiz > wsize) ? wsize : tsiz; 1585 NFSCL_REQSTART(nd, NFSPROC_WRITE, vp); 1586 if (nd->nd_flag & ND_NFSV4) { 1587 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID); 1588 NFSM_BUILD(tl, u_int32_t *, NFSX_HYPER+2*NFSX_UNSIGNED); 1589 txdr_hyper(uiop->uio_offset, tl); 1590 tl += 2; 1591 *tl++ = txdr_unsigned(*iomode); 1592 *tl = txdr_unsigned(len); 1593 } else if (nd->nd_flag & ND_NFSV3) { 1594 NFSM_BUILD(tl, u_int32_t *, NFSX_HYPER+3*NFSX_UNSIGNED); 1595 txdr_hyper(uiop->uio_offset, tl); 1596 tl += 2; 1597 *tl++ = txdr_unsigned(len); 1598 *tl++ = txdr_unsigned(*iomode); 1599 *tl = txdr_unsigned(len); 1600 } else { 1601 u_int32_t x; 1602 1603 NFSM_BUILD(tl, u_int32_t *, 4 * NFSX_UNSIGNED); 1604 /* 1605 * Not sure why someone changed this, since the 1606 * RFC clearly states that "beginoffset" and 1607 * "totalcount" are ignored, but it wouldn't 1608 * surprise me if there's a busted server out there. 1609 */ 1610 /* Set both "begin" and "current" to non-garbage. */ 1611 x = txdr_unsigned((u_int32_t)uiop->uio_offset); 1612 *tl++ = x; /* "begin offset" */ 1613 *tl++ = x; /* "current offset" */ 1614 x = txdr_unsigned(len); 1615 *tl++ = x; /* total to this offset */ 1616 *tl = x; /* size of this write */ 1617 1618 } 1619 nfsm_uiombuf(nd, uiop, len); 1620 /* 1621 * Although it is tempting to do a normal Getattr Op in the 1622 * NFSv4 compound, the result can be a nearly hung client 1623 * system if the Getattr asks for Owner and/or OwnerGroup. 1624 * It occurs when the client can't map either the Owner or 1625 * Owner_group name in the Getattr reply to a uid/gid. When 1626 * there is a cache miss, the kernel does an upcall to the 1627 * nfsuserd. Then, it can try and read the local /etc/passwd 1628 * or /etc/group file. It can then block in getnewbuf(), 1629 * waiting for dirty writes to be pushed to the NFS server. 1630 * The only reason this doesn't result in a complete 1631 * deadlock, is that the upcall times out and allows 1632 * the write to complete. However, progress is so slow 1633 * that it might just as well be deadlocked. 1634 * As such, we get the rest of the attributes, but not 1635 * Owner or Owner_group. 1636 * nb: nfscl_loadattrcache() needs to be told that these 1637 * partial attributes from a write rpc are being 1638 * passed in, via a argument flag. 1639 */ 1640 if (nd->nd_flag & ND_NFSV4) { 1641 NFSWRITEGETATTR_ATTRBIT(&attrbits); 1642 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1643 *tl = txdr_unsigned(NFSV4OP_GETATTR); 1644 (void) nfsrv_putattrbit(nd, &attrbits); 1645 } 1646 error = nfscl_request(nd, vp, p, cred, stuff); 1647 if (error) 1648 return (error); 1649 if (nd->nd_repstat) { 1650 /* 1651 * In case the rpc gets retried, roll 1652 * the uio fileds changed by nfsm_uiombuf() 1653 * back. 1654 */ 1655 uiop->uio_offset -= len; 1656 uio_uio_resid_add(uiop, len); 1657 uio_iov_base_add(uiop, -len); 1658 uio_iov_len_add(uiop, len); 1659 } 1660 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) { 1661 error = nfscl_wcc_data(nd, vp, nap, attrflagp, 1662 &wccflag, stuff); 1663 if (error) 1664 goto nfsmout; 1665 } 1666 if (!nd->nd_repstat) { 1667 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) { 1668 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED 1669 + NFSX_VERF); 1670 rlen = fxdr_unsigned(int, *tl++); 1671 if (rlen == 0) { 1672 error = NFSERR_IO; 1673 goto nfsmout; 1674 } else if (rlen < len) { 1675 backup = len - rlen; 1676 uio_iov_base_add(uiop, -(backup)); 1677 uio_iov_len_add(uiop, backup); 1678 uiop->uio_offset -= backup; 1679 uio_uio_resid_add(uiop, backup); 1680 len = rlen; 1681 } 1682 commit = fxdr_unsigned(int, *tl++); 1683 1684 /* 1685 * Return the lowest committment level 1686 * obtained by any of the RPCs. 1687 */ 1688 if (committed == NFSWRITE_FILESYNC) 1689 committed = commit; 1690 else if (committed == NFSWRITE_DATASYNC && 1691 commit == NFSWRITE_UNSTABLE) 1692 committed = commit; 1693 NFSLOCKMNT(nmp); 1694 if (!NFSHASWRITEVERF(nmp)) { 1695 NFSBCOPY((caddr_t)tl, 1696 (caddr_t)&nmp->nm_verf[0], 1697 NFSX_VERF); 1698 NFSSETWRITEVERF(nmp); 1699 } else if (NFSBCMP(tl, nmp->nm_verf, 1700 NFSX_VERF)) { 1701 *must_commit = 1; 1702 NFSBCOPY(tl, nmp->nm_verf, NFSX_VERF); 1703 } 1704 NFSUNLOCKMNT(nmp); 1705 } 1706 if (nd->nd_flag & ND_NFSV4) 1707 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1708 if (nd->nd_flag & (ND_NFSV2 | ND_NFSV4)) { 1709 error = nfsm_loadattr(nd, nap); 1710 if (!error) 1711 *attrflagp = NFS_LATTR_NOSHRINK; 1712 } 1713 } else { 1714 error = nd->nd_repstat; 1715 } 1716 if (error) 1717 goto nfsmout; 1718 NFSWRITERPC_SETTIME(wccflag, np, (nd->nd_flag & ND_NFSV4)); 1719 mbuf_freem(nd->nd_mrep); 1720 nd->nd_mrep = NULL; 1721 tsiz -= len; 1722 } 1723 nfsmout: 1724 if (nd->nd_mrep != NULL) 1725 mbuf_freem(nd->nd_mrep); 1726 *iomode = committed; 1727 if (nd->nd_repstat && !error) 1728 error = nd->nd_repstat; 1729 return (error); 1730 } 1731 1732 /* 1733 * nfs mknod rpc 1734 * For NFS v2 this is a kludge. Use a create rpc but with the IFMT bits of the 1735 * mode set to specify the file type and the size field for rdev. 1736 */ 1737 APPLESTATIC int 1738 nfsrpc_mknod(vnode_t dvp, char *name, int namelen, struct vattr *vap, 1739 u_int32_t rdev, enum vtype vtyp, struct ucred *cred, NFSPROC_T *p, 1740 struct nfsvattr *dnap, struct nfsvattr *nnap, struct nfsfh **nfhpp, 1741 int *attrflagp, int *dattrflagp, void *dstuff) 1742 { 1743 u_int32_t *tl; 1744 int error = 0; 1745 struct nfsrv_descript nfsd, *nd = &nfsd; 1746 nfsattrbit_t attrbits; 1747 1748 *nfhpp = NULL; 1749 *attrflagp = 0; 1750 *dattrflagp = 0; 1751 if (namelen > NFS_MAXNAMLEN) 1752 return (ENAMETOOLONG); 1753 NFSCL_REQSTART(nd, NFSPROC_MKNOD, dvp); 1754 if (nd->nd_flag & ND_NFSV4) { 1755 if (vtyp == VBLK || vtyp == VCHR) { 1756 NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 1757 *tl++ = vtonfsv34_type(vtyp); 1758 *tl++ = txdr_unsigned(NFSMAJOR(rdev)); 1759 *tl = txdr_unsigned(NFSMINOR(rdev)); 1760 } else { 1761 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1762 *tl = vtonfsv34_type(vtyp); 1763 } 1764 } 1765 (void) nfsm_strtom(nd, name, namelen); 1766 if (nd->nd_flag & ND_NFSV3) { 1767 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1768 *tl = vtonfsv34_type(vtyp); 1769 } 1770 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) 1771 nfscl_fillsattr(nd, vap, dvp, 0, 0); 1772 if ((nd->nd_flag & ND_NFSV3) && 1773 (vtyp == VCHR || vtyp == VBLK)) { 1774 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1775 *tl++ = txdr_unsigned(NFSMAJOR(rdev)); 1776 *tl = txdr_unsigned(NFSMINOR(rdev)); 1777 } 1778 if (nd->nd_flag & ND_NFSV4) { 1779 NFSGETATTR_ATTRBIT(&attrbits); 1780 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1781 *tl++ = txdr_unsigned(NFSV4OP_GETFH); 1782 *tl = txdr_unsigned(NFSV4OP_GETATTR); 1783 (void) nfsrv_putattrbit(nd, &attrbits); 1784 } 1785 if (nd->nd_flag & ND_NFSV2) 1786 nfscl_fillsattr(nd, vap, dvp, NFSSATTR_SIZERDEV, rdev); 1787 error = nfscl_request(nd, dvp, p, cred, dstuff); 1788 if (error) 1789 return (error); 1790 if (nd->nd_flag & ND_NFSV4) 1791 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 1792 if (!nd->nd_repstat) { 1793 if (nd->nd_flag & ND_NFSV4) { 1794 NFSM_DISSECT(tl, u_int32_t *, 5 * NFSX_UNSIGNED); 1795 error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL); 1796 if (error) 1797 goto nfsmout; 1798 } 1799 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp); 1800 if (error) 1801 goto nfsmout; 1802 } 1803 if (nd->nd_flag & ND_NFSV3) 1804 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 1805 if (!error && nd->nd_repstat) 1806 error = nd->nd_repstat; 1807 nfsmout: 1808 mbuf_freem(nd->nd_mrep); 1809 return (error); 1810 } 1811 1812 /* 1813 * nfs file create call 1814 * Mostly just call the approriate routine. (I separated out v4, so that 1815 * error recovery wouldn't be as difficult.) 1816 */ 1817 APPLESTATIC int 1818 nfsrpc_create(vnode_t dvp, char *name, int namelen, struct vattr *vap, 1819 nfsquad_t cverf, int fmode, struct ucred *cred, NFSPROC_T *p, 1820 struct nfsvattr *dnap, struct nfsvattr *nnap, struct nfsfh **nfhpp, 1821 int *attrflagp, int *dattrflagp, void *dstuff) 1822 { 1823 int error = 0, newone, expireret = 0, retrycnt, unlocked; 1824 struct nfsclowner *owp; 1825 struct nfscldeleg *dp; 1826 struct nfsmount *nmp = VFSTONFS(vnode_mount(dvp)); 1827 u_int32_t clidrev; 1828 1829 if (NFSHASNFSV4(nmp)) { 1830 retrycnt = 0; 1831 do { 1832 dp = NULL; 1833 error = nfscl_open(dvp, NULL, 0, (NFSV4OPEN_ACCESSWRITE | 1834 NFSV4OPEN_ACCESSREAD), 0, cred, p, &owp, NULL, &newone, 1835 NULL, 1); 1836 if (error) 1837 return (error); 1838 if (nmp->nm_clp != NULL) 1839 clidrev = nmp->nm_clp->nfsc_clientidrev; 1840 else 1841 clidrev = 0; 1842 error = nfsrpc_createv4(dvp, name, namelen, vap, cverf, fmode, 1843 owp, &dp, cred, p, dnap, nnap, nfhpp, attrflagp, dattrflagp, 1844 dstuff, &unlocked); 1845 /* 1846 * There is no need to invalidate cached attributes here, 1847 * since new post-delegation issue attributes are always 1848 * returned by nfsrpc_createv4() and these will update the 1849 * attribute cache. 1850 */ 1851 if (dp != NULL) 1852 (void) nfscl_deleg(nmp->nm_mountp, owp->nfsow_clp, 1853 (*nfhpp)->nfh_fh, (*nfhpp)->nfh_len, cred, p, &dp); 1854 nfscl_ownerrelease(owp, error, newone, unlocked); 1855 if (error == NFSERR_GRACE || error == NFSERR_STALECLIENTID || 1856 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 1857 error == NFSERR_BADSESSION) { 1858 (void) nfs_catnap(PZERO, error, "nfs_open"); 1859 } else if ((error == NFSERR_EXPIRED || 1860 error == NFSERR_BADSTATEID) && clidrev != 0) { 1861 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p); 1862 retrycnt++; 1863 } 1864 } while (error == NFSERR_GRACE || error == NFSERR_STALECLIENTID || 1865 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 1866 error == NFSERR_BADSESSION || 1867 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) && 1868 expireret == 0 && clidrev != 0 && retrycnt < 4)); 1869 if (error && retrycnt >= 4) 1870 error = EIO; 1871 } else { 1872 error = nfsrpc_createv23(dvp, name, namelen, vap, cverf, 1873 fmode, cred, p, dnap, nnap, nfhpp, attrflagp, dattrflagp, 1874 dstuff); 1875 } 1876 return (error); 1877 } 1878 1879 /* 1880 * The create rpc for v2 and 3. 1881 */ 1882 static int 1883 nfsrpc_createv23(vnode_t dvp, char *name, int namelen, struct vattr *vap, 1884 nfsquad_t cverf, int fmode, struct ucred *cred, NFSPROC_T *p, 1885 struct nfsvattr *dnap, struct nfsvattr *nnap, struct nfsfh **nfhpp, 1886 int *attrflagp, int *dattrflagp, void *dstuff) 1887 { 1888 u_int32_t *tl; 1889 int error = 0; 1890 struct nfsrv_descript nfsd, *nd = &nfsd; 1891 1892 *nfhpp = NULL; 1893 *attrflagp = 0; 1894 *dattrflagp = 0; 1895 if (namelen > NFS_MAXNAMLEN) 1896 return (ENAMETOOLONG); 1897 NFSCL_REQSTART(nd, NFSPROC_CREATE, dvp); 1898 (void) nfsm_strtom(nd, name, namelen); 1899 if (nd->nd_flag & ND_NFSV3) { 1900 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1901 if (fmode & O_EXCL) { 1902 *tl = txdr_unsigned(NFSCREATE_EXCLUSIVE); 1903 NFSM_BUILD(tl, u_int32_t *, NFSX_VERF); 1904 *tl++ = cverf.lval[0]; 1905 *tl = cverf.lval[1]; 1906 } else { 1907 *tl = txdr_unsigned(NFSCREATE_UNCHECKED); 1908 nfscl_fillsattr(nd, vap, dvp, 0, 0); 1909 } 1910 } else { 1911 nfscl_fillsattr(nd, vap, dvp, NFSSATTR_SIZE0, 0); 1912 } 1913 error = nfscl_request(nd, dvp, p, cred, dstuff); 1914 if (error) 1915 return (error); 1916 if (nd->nd_repstat == 0) { 1917 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp); 1918 if (error) 1919 goto nfsmout; 1920 } 1921 if (nd->nd_flag & ND_NFSV3) 1922 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 1923 if (nd->nd_repstat != 0 && error == 0) 1924 error = nd->nd_repstat; 1925 nfsmout: 1926 mbuf_freem(nd->nd_mrep); 1927 return (error); 1928 } 1929 1930 static int 1931 nfsrpc_createv4(vnode_t dvp, char *name, int namelen, struct vattr *vap, 1932 nfsquad_t cverf, int fmode, struct nfsclowner *owp, struct nfscldeleg **dpp, 1933 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap, 1934 struct nfsvattr *nnap, struct nfsfh **nfhpp, int *attrflagp, 1935 int *dattrflagp, void *dstuff, int *unlockedp) 1936 { 1937 u_int32_t *tl; 1938 int error = 0, deleg, newone, ret, acesize, limitby; 1939 struct nfsrv_descript nfsd, *nd = &nfsd; 1940 struct nfsclopen *op; 1941 struct nfscldeleg *dp = NULL; 1942 struct nfsnode *np; 1943 struct nfsfh *nfhp; 1944 nfsattrbit_t attrbits; 1945 nfsv4stateid_t stateid; 1946 u_int32_t rflags; 1947 struct nfsmount *nmp; 1948 1949 nmp = VFSTONFS(dvp->v_mount); 1950 *unlockedp = 0; 1951 *nfhpp = NULL; 1952 *dpp = NULL; 1953 *attrflagp = 0; 1954 *dattrflagp = 0; 1955 if (namelen > NFS_MAXNAMLEN) 1956 return (ENAMETOOLONG); 1957 NFSCL_REQSTART(nd, NFSPROC_CREATE, dvp); 1958 /* 1959 * For V4, this is actually an Open op. 1960 */ 1961 NFSM_BUILD(tl, u_int32_t *, 5 * NFSX_UNSIGNED); 1962 *tl++ = txdr_unsigned(owp->nfsow_seqid); 1963 *tl++ = txdr_unsigned(NFSV4OPEN_ACCESSWRITE | 1964 NFSV4OPEN_ACCESSREAD); 1965 *tl++ = txdr_unsigned(NFSV4OPEN_DENYNONE); 1966 *tl++ = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[0]; 1967 *tl = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[1]; 1968 (void) nfsm_strtom(nd, owp->nfsow_owner, NFSV4CL_LOCKNAMELEN); 1969 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1970 *tl++ = txdr_unsigned(NFSV4OPEN_CREATE); 1971 if (fmode & O_EXCL) { 1972 if (NFSHASNFSV4N(nmp)) { 1973 if (NFSHASSESSPERSIST(nmp)) { 1974 /* Use GUARDED for persistent sessions. */ 1975 *tl = txdr_unsigned(NFSCREATE_GUARDED); 1976 nfscl_fillsattr(nd, vap, dvp, 0, 0); 1977 } else { 1978 /* Otherwise, use EXCLUSIVE4_1. */ 1979 *tl = txdr_unsigned(NFSCREATE_EXCLUSIVE41); 1980 NFSM_BUILD(tl, u_int32_t *, NFSX_VERF); 1981 *tl++ = cverf.lval[0]; 1982 *tl = cverf.lval[1]; 1983 nfscl_fillsattr(nd, vap, dvp, 0, 0); 1984 } 1985 } else { 1986 /* NFSv4.0 */ 1987 *tl = txdr_unsigned(NFSCREATE_EXCLUSIVE); 1988 NFSM_BUILD(tl, u_int32_t *, NFSX_VERF); 1989 *tl++ = cverf.lval[0]; 1990 *tl = cverf.lval[1]; 1991 } 1992 } else { 1993 *tl = txdr_unsigned(NFSCREATE_UNCHECKED); 1994 nfscl_fillsattr(nd, vap, dvp, 0, 0); 1995 } 1996 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1997 *tl = txdr_unsigned(NFSV4OPEN_CLAIMNULL); 1998 (void) nfsm_strtom(nd, name, namelen); 1999 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2000 *tl++ = txdr_unsigned(NFSV4OP_GETFH); 2001 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2002 NFSGETATTR_ATTRBIT(&attrbits); 2003 (void) nfsrv_putattrbit(nd, &attrbits); 2004 error = nfscl_request(nd, dvp, p, cred, dstuff); 2005 if (error) 2006 return (error); 2007 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 2008 if (error) 2009 goto nfsmout; 2010 NFSCL_INCRSEQID(owp->nfsow_seqid, nd); 2011 if (nd->nd_repstat == 0) { 2012 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID + 2013 6 * NFSX_UNSIGNED); 2014 stateid.seqid = *tl++; 2015 stateid.other[0] = *tl++; 2016 stateid.other[1] = *tl++; 2017 stateid.other[2] = *tl; 2018 rflags = fxdr_unsigned(u_int32_t, *(tl + 6)); 2019 (void) nfsrv_getattrbits(nd, &attrbits, NULL, NULL); 2020 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2021 deleg = fxdr_unsigned(int, *tl); 2022 if (deleg == NFSV4OPEN_DELEGATEREAD || 2023 deleg == NFSV4OPEN_DELEGATEWRITE) { 2024 if (!(owp->nfsow_clp->nfsc_flags & 2025 NFSCLFLAGS_FIRSTDELEG)) 2026 owp->nfsow_clp->nfsc_flags |= 2027 (NFSCLFLAGS_FIRSTDELEG | NFSCLFLAGS_GOTDELEG); 2028 MALLOC(dp, struct nfscldeleg *, 2029 sizeof (struct nfscldeleg) + NFSX_V4FHMAX, 2030 M_NFSCLDELEG, M_WAITOK); 2031 LIST_INIT(&dp->nfsdl_owner); 2032 LIST_INIT(&dp->nfsdl_lock); 2033 dp->nfsdl_clp = owp->nfsow_clp; 2034 newnfs_copyincred(cred, &dp->nfsdl_cred); 2035 nfscl_lockinit(&dp->nfsdl_rwlock); 2036 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID + 2037 NFSX_UNSIGNED); 2038 dp->nfsdl_stateid.seqid = *tl++; 2039 dp->nfsdl_stateid.other[0] = *tl++; 2040 dp->nfsdl_stateid.other[1] = *tl++; 2041 dp->nfsdl_stateid.other[2] = *tl++; 2042 ret = fxdr_unsigned(int, *tl); 2043 if (deleg == NFSV4OPEN_DELEGATEWRITE) { 2044 dp->nfsdl_flags = NFSCLDL_WRITE; 2045 /* 2046 * Indicates how much the file can grow. 2047 */ 2048 NFSM_DISSECT(tl, u_int32_t *, 2049 3 * NFSX_UNSIGNED); 2050 limitby = fxdr_unsigned(int, *tl++); 2051 switch (limitby) { 2052 case NFSV4OPEN_LIMITSIZE: 2053 dp->nfsdl_sizelimit = fxdr_hyper(tl); 2054 break; 2055 case NFSV4OPEN_LIMITBLOCKS: 2056 dp->nfsdl_sizelimit = 2057 fxdr_unsigned(u_int64_t, *tl++); 2058 dp->nfsdl_sizelimit *= 2059 fxdr_unsigned(u_int64_t, *tl); 2060 break; 2061 default: 2062 error = NFSERR_BADXDR; 2063 goto nfsmout; 2064 }; 2065 } else { 2066 dp->nfsdl_flags = NFSCLDL_READ; 2067 } 2068 if (ret) 2069 dp->nfsdl_flags |= NFSCLDL_RECALL; 2070 error = nfsrv_dissectace(nd, &dp->nfsdl_ace, &ret, 2071 &acesize, p); 2072 if (error) 2073 goto nfsmout; 2074 } else if (deleg != NFSV4OPEN_DELEGATENONE) { 2075 error = NFSERR_BADXDR; 2076 goto nfsmout; 2077 } 2078 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp); 2079 if (error) 2080 goto nfsmout; 2081 if (dp != NULL && *attrflagp) { 2082 dp->nfsdl_change = nnap->na_filerev; 2083 dp->nfsdl_modtime = nnap->na_mtime; 2084 dp->nfsdl_flags |= NFSCLDL_MODTIMESET; 2085 } 2086 /* 2087 * We can now complete the Open state. 2088 */ 2089 nfhp = *nfhpp; 2090 if (dp != NULL) { 2091 dp->nfsdl_fhlen = nfhp->nfh_len; 2092 NFSBCOPY(nfhp->nfh_fh, dp->nfsdl_fh, nfhp->nfh_len); 2093 } 2094 /* 2095 * Get an Open structure that will be 2096 * attached to the OpenOwner, acquired already. 2097 */ 2098 error = nfscl_open(dvp, nfhp->nfh_fh, nfhp->nfh_len, 2099 (NFSV4OPEN_ACCESSWRITE | NFSV4OPEN_ACCESSREAD), 0, 2100 cred, p, NULL, &op, &newone, NULL, 0); 2101 if (error) 2102 goto nfsmout; 2103 op->nfso_stateid = stateid; 2104 newnfs_copyincred(cred, &op->nfso_cred); 2105 if ((rflags & NFSV4OPEN_RESULTCONFIRM)) { 2106 do { 2107 ret = nfsrpc_openconfirm(dvp, nfhp->nfh_fh, 2108 nfhp->nfh_len, op, cred, p); 2109 if (ret == NFSERR_DELAY) 2110 (void) nfs_catnap(PZERO, ret, "nfs_create"); 2111 } while (ret == NFSERR_DELAY); 2112 error = ret; 2113 } 2114 2115 /* 2116 * If the server is handing out delegations, but we didn't 2117 * get one because an OpenConfirm was required, try the 2118 * Open again, to get a delegation. This is a harmless no-op, 2119 * from a server's point of view. 2120 */ 2121 if ((rflags & NFSV4OPEN_RESULTCONFIRM) && 2122 (owp->nfsow_clp->nfsc_flags & NFSCLFLAGS_GOTDELEG) && 2123 !error && dp == NULL) { 2124 np = VTONFS(dvp); 2125 do { 2126 ret = nfsrpc_openrpc(VFSTONFS(vnode_mount(dvp)), dvp, 2127 np->n_fhp->nfh_fh, np->n_fhp->nfh_len, 2128 nfhp->nfh_fh, nfhp->nfh_len, 2129 (NFSV4OPEN_ACCESSWRITE | NFSV4OPEN_ACCESSREAD), op, 2130 name, namelen, &dp, 0, 0x0, cred, p, 0, 1); 2131 if (ret == NFSERR_DELAY) 2132 (void) nfs_catnap(PZERO, ret, "nfs_crt2"); 2133 } while (ret == NFSERR_DELAY); 2134 if (ret) { 2135 if (dp != NULL) 2136 FREE((caddr_t)dp, M_NFSCLDELEG); 2137 if (ret == NFSERR_STALECLIENTID || 2138 ret == NFSERR_STALEDONTRECOVER || 2139 ret == NFSERR_BADSESSION) 2140 error = ret; 2141 } 2142 } 2143 nfscl_openrelease(op, error, newone); 2144 *unlockedp = 1; 2145 } 2146 if (nd->nd_repstat != 0 && error == 0) 2147 error = nd->nd_repstat; 2148 if (error == NFSERR_STALECLIENTID || error == NFSERR_BADSESSION) 2149 nfscl_initiate_recovery(owp->nfsow_clp); 2150 nfsmout: 2151 if (!error) 2152 *dpp = dp; 2153 else if (dp != NULL) 2154 FREE((caddr_t)dp, M_NFSCLDELEG); 2155 mbuf_freem(nd->nd_mrep); 2156 return (error); 2157 } 2158 2159 /* 2160 * Nfs remove rpc 2161 */ 2162 APPLESTATIC int 2163 nfsrpc_remove(vnode_t dvp, char *name, int namelen, vnode_t vp, 2164 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap, int *dattrflagp, 2165 void *dstuff) 2166 { 2167 u_int32_t *tl; 2168 struct nfsrv_descript nfsd, *nd = &nfsd; 2169 struct nfsnode *np; 2170 struct nfsmount *nmp; 2171 nfsv4stateid_t dstateid; 2172 int error, ret = 0, i; 2173 2174 *dattrflagp = 0; 2175 if (namelen > NFS_MAXNAMLEN) 2176 return (ENAMETOOLONG); 2177 nmp = VFSTONFS(vnode_mount(dvp)); 2178 tryagain: 2179 if (NFSHASNFSV4(nmp) && ret == 0) { 2180 ret = nfscl_removedeleg(vp, p, &dstateid); 2181 if (ret == 1) { 2182 NFSCL_REQSTART(nd, NFSPROC_RETDELEGREMOVE, vp); 2183 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID + 2184 NFSX_UNSIGNED); 2185 if (NFSHASNFSV4N(nmp)) 2186 *tl++ = 0; 2187 else 2188 *tl++ = dstateid.seqid; 2189 *tl++ = dstateid.other[0]; 2190 *tl++ = dstateid.other[1]; 2191 *tl++ = dstateid.other[2]; 2192 *tl = txdr_unsigned(NFSV4OP_PUTFH); 2193 np = VTONFS(dvp); 2194 (void) nfsm_fhtom(nd, np->n_fhp->nfh_fh, 2195 np->n_fhp->nfh_len, 0); 2196 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2197 *tl = txdr_unsigned(NFSV4OP_REMOVE); 2198 } 2199 } else { 2200 ret = 0; 2201 } 2202 if (ret == 0) 2203 NFSCL_REQSTART(nd, NFSPROC_REMOVE, dvp); 2204 (void) nfsm_strtom(nd, name, namelen); 2205 error = nfscl_request(nd, dvp, p, cred, dstuff); 2206 if (error) 2207 return (error); 2208 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) { 2209 /* For NFSv4, parse out any Delereturn replies. */ 2210 if (ret > 0 && nd->nd_repstat != 0 && 2211 (nd->nd_flag & ND_NOMOREDATA)) { 2212 /* 2213 * If the Delegreturn failed, try again without 2214 * it. The server will Recall, as required. 2215 */ 2216 mbuf_freem(nd->nd_mrep); 2217 goto tryagain; 2218 } 2219 for (i = 0; i < (ret * 2); i++) { 2220 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == 2221 ND_NFSV4) { 2222 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2223 if (*(tl + 1)) 2224 nd->nd_flag |= ND_NOMOREDATA; 2225 } 2226 } 2227 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 2228 } 2229 if (nd->nd_repstat && !error) 2230 error = nd->nd_repstat; 2231 nfsmout: 2232 mbuf_freem(nd->nd_mrep); 2233 return (error); 2234 } 2235 2236 /* 2237 * Do an nfs rename rpc. 2238 */ 2239 APPLESTATIC int 2240 nfsrpc_rename(vnode_t fdvp, vnode_t fvp, char *fnameptr, int fnamelen, 2241 vnode_t tdvp, vnode_t tvp, char *tnameptr, int tnamelen, struct ucred *cred, 2242 NFSPROC_T *p, struct nfsvattr *fnap, struct nfsvattr *tnap, 2243 int *fattrflagp, int *tattrflagp, void *fstuff, void *tstuff) 2244 { 2245 u_int32_t *tl; 2246 struct nfsrv_descript nfsd, *nd = &nfsd; 2247 struct nfsmount *nmp; 2248 struct nfsnode *np; 2249 nfsattrbit_t attrbits; 2250 nfsv4stateid_t fdstateid, tdstateid; 2251 int error = 0, ret = 0, gottd = 0, gotfd = 0, i; 2252 2253 *fattrflagp = 0; 2254 *tattrflagp = 0; 2255 nmp = VFSTONFS(vnode_mount(fdvp)); 2256 if (fnamelen > NFS_MAXNAMLEN || tnamelen > NFS_MAXNAMLEN) 2257 return (ENAMETOOLONG); 2258 tryagain: 2259 if (NFSHASNFSV4(nmp) && ret == 0) { 2260 ret = nfscl_renamedeleg(fvp, &fdstateid, &gotfd, tvp, 2261 &tdstateid, &gottd, p); 2262 if (gotfd && gottd) { 2263 NFSCL_REQSTART(nd, NFSPROC_RETDELEGRENAME2, fvp); 2264 } else if (gotfd) { 2265 NFSCL_REQSTART(nd, NFSPROC_RETDELEGRENAME1, fvp); 2266 } else if (gottd) { 2267 NFSCL_REQSTART(nd, NFSPROC_RETDELEGRENAME1, tvp); 2268 } 2269 if (gotfd) { 2270 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID); 2271 if (NFSHASNFSV4N(nmp)) 2272 *tl++ = 0; 2273 else 2274 *tl++ = fdstateid.seqid; 2275 *tl++ = fdstateid.other[0]; 2276 *tl++ = fdstateid.other[1]; 2277 *tl = fdstateid.other[2]; 2278 if (gottd) { 2279 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2280 *tl = txdr_unsigned(NFSV4OP_PUTFH); 2281 np = VTONFS(tvp); 2282 (void) nfsm_fhtom(nd, np->n_fhp->nfh_fh, 2283 np->n_fhp->nfh_len, 0); 2284 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2285 *tl = txdr_unsigned(NFSV4OP_DELEGRETURN); 2286 } 2287 } 2288 if (gottd) { 2289 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID); 2290 if (NFSHASNFSV4N(nmp)) 2291 *tl++ = 0; 2292 else 2293 *tl++ = tdstateid.seqid; 2294 *tl++ = tdstateid.other[0]; 2295 *tl++ = tdstateid.other[1]; 2296 *tl = tdstateid.other[2]; 2297 } 2298 if (ret > 0) { 2299 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2300 *tl = txdr_unsigned(NFSV4OP_PUTFH); 2301 np = VTONFS(fdvp); 2302 (void) nfsm_fhtom(nd, np->n_fhp->nfh_fh, 2303 np->n_fhp->nfh_len, 0); 2304 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2305 *tl = txdr_unsigned(NFSV4OP_SAVEFH); 2306 } 2307 } else { 2308 ret = 0; 2309 } 2310 if (ret == 0) 2311 NFSCL_REQSTART(nd, NFSPROC_RENAME, fdvp); 2312 if (nd->nd_flag & ND_NFSV4) { 2313 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2314 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2315 NFSWCCATTR_ATTRBIT(&attrbits); 2316 (void) nfsrv_putattrbit(nd, &attrbits); 2317 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2318 *tl = txdr_unsigned(NFSV4OP_PUTFH); 2319 (void) nfsm_fhtom(nd, VTONFS(tdvp)->n_fhp->nfh_fh, 2320 VTONFS(tdvp)->n_fhp->nfh_len, 0); 2321 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2322 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2323 (void) nfsrv_putattrbit(nd, &attrbits); 2324 nd->nd_flag |= ND_V4WCCATTR; 2325 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2326 *tl = txdr_unsigned(NFSV4OP_RENAME); 2327 } 2328 (void) nfsm_strtom(nd, fnameptr, fnamelen); 2329 if (!(nd->nd_flag & ND_NFSV4)) 2330 (void) nfsm_fhtom(nd, VTONFS(tdvp)->n_fhp->nfh_fh, 2331 VTONFS(tdvp)->n_fhp->nfh_len, 0); 2332 (void) nfsm_strtom(nd, tnameptr, tnamelen); 2333 error = nfscl_request(nd, fdvp, p, cred, fstuff); 2334 if (error) 2335 return (error); 2336 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) { 2337 /* For NFSv4, parse out any Delereturn replies. */ 2338 if (ret > 0 && nd->nd_repstat != 0 && 2339 (nd->nd_flag & ND_NOMOREDATA)) { 2340 /* 2341 * If the Delegreturn failed, try again without 2342 * it. The server will Recall, as required. 2343 */ 2344 mbuf_freem(nd->nd_mrep); 2345 goto tryagain; 2346 } 2347 for (i = 0; i < (ret * 2); i++) { 2348 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == 2349 ND_NFSV4) { 2350 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2351 if (*(tl + 1)) { 2352 if (i == 0 && ret > 1) { 2353 /* 2354 * If the Delegreturn failed, try again 2355 * without it. The server will Recall, as 2356 * required. 2357 * If ret > 1, the first iteration of this 2358 * loop is the second DelegReturn result. 2359 */ 2360 mbuf_freem(nd->nd_mrep); 2361 goto tryagain; 2362 } else { 2363 nd->nd_flag |= ND_NOMOREDATA; 2364 } 2365 } 2366 } 2367 } 2368 /* Now, the first wcc attribute reply. */ 2369 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == ND_NFSV4) { 2370 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2371 if (*(tl + 1)) 2372 nd->nd_flag |= ND_NOMOREDATA; 2373 } 2374 error = nfscl_wcc_data(nd, fdvp, fnap, fattrflagp, NULL, 2375 fstuff); 2376 /* and the second wcc attribute reply. */ 2377 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == ND_NFSV4 && 2378 !error) { 2379 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2380 if (*(tl + 1)) 2381 nd->nd_flag |= ND_NOMOREDATA; 2382 } 2383 if (!error) 2384 error = nfscl_wcc_data(nd, tdvp, tnap, tattrflagp, 2385 NULL, tstuff); 2386 } 2387 if (nd->nd_repstat && !error) 2388 error = nd->nd_repstat; 2389 nfsmout: 2390 mbuf_freem(nd->nd_mrep); 2391 return (error); 2392 } 2393 2394 /* 2395 * nfs hard link create rpc 2396 */ 2397 APPLESTATIC int 2398 nfsrpc_link(vnode_t dvp, vnode_t vp, char *name, int namelen, 2399 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap, 2400 struct nfsvattr *nap, int *attrflagp, int *dattrflagp, void *dstuff) 2401 { 2402 u_int32_t *tl; 2403 struct nfsrv_descript nfsd, *nd = &nfsd; 2404 nfsattrbit_t attrbits; 2405 int error = 0; 2406 2407 *attrflagp = 0; 2408 *dattrflagp = 0; 2409 if (namelen > NFS_MAXNAMLEN) 2410 return (ENAMETOOLONG); 2411 NFSCL_REQSTART(nd, NFSPROC_LINK, vp); 2412 if (nd->nd_flag & ND_NFSV4) { 2413 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2414 *tl = txdr_unsigned(NFSV4OP_PUTFH); 2415 } 2416 (void) nfsm_fhtom(nd, VTONFS(dvp)->n_fhp->nfh_fh, 2417 VTONFS(dvp)->n_fhp->nfh_len, 0); 2418 if (nd->nd_flag & ND_NFSV4) { 2419 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2420 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2421 NFSWCCATTR_ATTRBIT(&attrbits); 2422 (void) nfsrv_putattrbit(nd, &attrbits); 2423 nd->nd_flag |= ND_V4WCCATTR; 2424 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2425 *tl = txdr_unsigned(NFSV4OP_LINK); 2426 } 2427 (void) nfsm_strtom(nd, name, namelen); 2428 error = nfscl_request(nd, vp, p, cred, dstuff); 2429 if (error) 2430 return (error); 2431 if (nd->nd_flag & ND_NFSV3) { 2432 error = nfscl_postop_attr(nd, nap, attrflagp, dstuff); 2433 if (!error) 2434 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, 2435 NULL, dstuff); 2436 } else if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == ND_NFSV4) { 2437 /* 2438 * First, parse out the PutFH and Getattr result. 2439 */ 2440 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2441 if (!(*(tl + 1))) 2442 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2443 if (*(tl + 1)) 2444 nd->nd_flag |= ND_NOMOREDATA; 2445 /* 2446 * Get the pre-op attributes. 2447 */ 2448 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 2449 } 2450 if (nd->nd_repstat && !error) 2451 error = nd->nd_repstat; 2452 nfsmout: 2453 mbuf_freem(nd->nd_mrep); 2454 return (error); 2455 } 2456 2457 /* 2458 * nfs symbolic link create rpc 2459 */ 2460 APPLESTATIC int 2461 nfsrpc_symlink(vnode_t dvp, char *name, int namelen, char *target, 2462 struct vattr *vap, struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap, 2463 struct nfsvattr *nnap, struct nfsfh **nfhpp, int *attrflagp, 2464 int *dattrflagp, void *dstuff) 2465 { 2466 u_int32_t *tl; 2467 struct nfsrv_descript nfsd, *nd = &nfsd; 2468 struct nfsmount *nmp; 2469 int slen, error = 0; 2470 2471 *nfhpp = NULL; 2472 *attrflagp = 0; 2473 *dattrflagp = 0; 2474 nmp = VFSTONFS(vnode_mount(dvp)); 2475 slen = strlen(target); 2476 if (slen > NFS_MAXPATHLEN || namelen > NFS_MAXNAMLEN) 2477 return (ENAMETOOLONG); 2478 NFSCL_REQSTART(nd, NFSPROC_SYMLINK, dvp); 2479 if (nd->nd_flag & ND_NFSV4) { 2480 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2481 *tl = txdr_unsigned(NFLNK); 2482 (void) nfsm_strtom(nd, target, slen); 2483 } 2484 (void) nfsm_strtom(nd, name, namelen); 2485 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) 2486 nfscl_fillsattr(nd, vap, dvp, 0, 0); 2487 if (!(nd->nd_flag & ND_NFSV4)) 2488 (void) nfsm_strtom(nd, target, slen); 2489 if (nd->nd_flag & ND_NFSV2) 2490 nfscl_fillsattr(nd, vap, dvp, NFSSATTR_SIZENEG1, 0); 2491 error = nfscl_request(nd, dvp, p, cred, dstuff); 2492 if (error) 2493 return (error); 2494 if (nd->nd_flag & ND_NFSV4) 2495 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 2496 if ((nd->nd_flag & ND_NFSV3) && !error) { 2497 if (!nd->nd_repstat) 2498 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp); 2499 if (!error) 2500 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, 2501 NULL, dstuff); 2502 } 2503 if (nd->nd_repstat && !error) 2504 error = nd->nd_repstat; 2505 mbuf_freem(nd->nd_mrep); 2506 /* 2507 * Kludge: Map EEXIST => 0 assuming that it is a reply to a retry. 2508 */ 2509 if (error == EEXIST) 2510 error = 0; 2511 return (error); 2512 } 2513 2514 /* 2515 * nfs make dir rpc 2516 */ 2517 APPLESTATIC int 2518 nfsrpc_mkdir(vnode_t dvp, char *name, int namelen, struct vattr *vap, 2519 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap, 2520 struct nfsvattr *nnap, struct nfsfh **nfhpp, int *attrflagp, 2521 int *dattrflagp, void *dstuff) 2522 { 2523 u_int32_t *tl; 2524 struct nfsrv_descript nfsd, *nd = &nfsd; 2525 nfsattrbit_t attrbits; 2526 int error = 0; 2527 2528 *nfhpp = NULL; 2529 *attrflagp = 0; 2530 *dattrflagp = 0; 2531 if (namelen > NFS_MAXNAMLEN) 2532 return (ENAMETOOLONG); 2533 NFSCL_REQSTART(nd, NFSPROC_MKDIR, dvp); 2534 if (nd->nd_flag & ND_NFSV4) { 2535 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2536 *tl = txdr_unsigned(NFDIR); 2537 } 2538 (void) nfsm_strtom(nd, name, namelen); 2539 nfscl_fillsattr(nd, vap, dvp, NFSSATTR_SIZENEG1, 0); 2540 if (nd->nd_flag & ND_NFSV4) { 2541 NFSGETATTR_ATTRBIT(&attrbits); 2542 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2543 *tl++ = txdr_unsigned(NFSV4OP_GETFH); 2544 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2545 (void) nfsrv_putattrbit(nd, &attrbits); 2546 } 2547 error = nfscl_request(nd, dvp, p, cred, dstuff); 2548 if (error) 2549 return (error); 2550 if (nd->nd_flag & ND_NFSV4) 2551 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 2552 if (!nd->nd_repstat && !error) { 2553 if (nd->nd_flag & ND_NFSV4) { 2554 NFSM_DISSECT(tl, u_int32_t *, 5 * NFSX_UNSIGNED); 2555 error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL); 2556 } 2557 if (!error) 2558 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp); 2559 } 2560 if ((nd->nd_flag & ND_NFSV3) && !error) 2561 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 2562 if (nd->nd_repstat && !error) 2563 error = nd->nd_repstat; 2564 nfsmout: 2565 mbuf_freem(nd->nd_mrep); 2566 /* 2567 * Kludge: Map EEXIST => 0 assuming that you have a reply to a retry. 2568 */ 2569 if (error == EEXIST) 2570 error = 0; 2571 return (error); 2572 } 2573 2574 /* 2575 * nfs remove directory call 2576 */ 2577 APPLESTATIC int 2578 nfsrpc_rmdir(vnode_t dvp, char *name, int namelen, struct ucred *cred, 2579 NFSPROC_T *p, struct nfsvattr *dnap, int *dattrflagp, void *dstuff) 2580 { 2581 struct nfsrv_descript nfsd, *nd = &nfsd; 2582 int error = 0; 2583 2584 *dattrflagp = 0; 2585 if (namelen > NFS_MAXNAMLEN) 2586 return (ENAMETOOLONG); 2587 NFSCL_REQSTART(nd, NFSPROC_RMDIR, dvp); 2588 (void) nfsm_strtom(nd, name, namelen); 2589 error = nfscl_request(nd, dvp, p, cred, dstuff); 2590 if (error) 2591 return (error); 2592 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) 2593 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 2594 if (nd->nd_repstat && !error) 2595 error = nd->nd_repstat; 2596 mbuf_freem(nd->nd_mrep); 2597 /* 2598 * Kludge: Map ENOENT => 0 assuming that you have a reply to a retry. 2599 */ 2600 if (error == ENOENT) 2601 error = 0; 2602 return (error); 2603 } 2604 2605 /* 2606 * Readdir rpc. 2607 * Always returns with either uio_resid unchanged, if you are at the 2608 * end of the directory, or uio_resid == 0, with all DIRBLKSIZ chunks 2609 * filled in. 2610 * I felt this would allow caching of directory blocks more easily 2611 * than returning a pertially filled block. 2612 * Directory offset cookies: 2613 * Oh my, what to do with them... 2614 * I can think of three ways to deal with them: 2615 * 1 - have the layer above these RPCs maintain a map between logical 2616 * directory byte offsets and the NFS directory offset cookies 2617 * 2 - pass the opaque directory offset cookies up into userland 2618 * and let the libc functions deal with them, via the system call 2619 * 3 - return them to userland in the "struct dirent", so future versions 2620 * of libc can use them and do whatever is necessary to amke things work 2621 * above these rpc calls, in the meantime 2622 * For now, I do #3 by "hiding" the directory offset cookies after the 2623 * d_name field in struct dirent. This is space inside d_reclen that 2624 * will be ignored by anything that doesn't know about them. 2625 * The directory offset cookies are filled in as the last 8 bytes of 2626 * each directory entry, after d_name. Someday, the userland libc 2627 * functions may be able to use these. In the meantime, it satisfies 2628 * OpenBSD's requirements for cookies being returned. 2629 * If expects the directory offset cookie for the read to be in uio_offset 2630 * and returns the one for the next entry after this directory block in 2631 * there, as well. 2632 */ 2633 APPLESTATIC int 2634 nfsrpc_readdir(vnode_t vp, struct uio *uiop, nfsuint64 *cookiep, 2635 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, 2636 int *eofp, void *stuff) 2637 { 2638 int len, left; 2639 struct dirent *dp = NULL; 2640 u_int32_t *tl; 2641 nfsquad_t cookie, ncookie; 2642 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 2643 struct nfsnode *dnp = VTONFS(vp); 2644 struct nfsvattr nfsva; 2645 struct nfsrv_descript nfsd, *nd = &nfsd; 2646 int error = 0, tlen, more_dirs = 1, blksiz = 0, bigenough = 1; 2647 int reqsize, tryformoredirs = 1, readsize, eof = 0, gotmnton = 0; 2648 long dotfileid, dotdotfileid = 0; 2649 u_int32_t fakefileno = 0xffffffff, rderr; 2650 char *cp; 2651 nfsattrbit_t attrbits, dattrbits; 2652 u_int32_t *tl2 = NULL; 2653 size_t tresid; 2654 2655 KASSERT(uiop->uio_iovcnt == 1 && 2656 (uio_uio_resid(uiop) & (DIRBLKSIZ - 1)) == 0, 2657 ("nfs readdirrpc bad uio")); 2658 2659 /* 2660 * There is no point in reading a lot more than uio_resid, however 2661 * adding one additional DIRBLKSIZ makes sense. Since uio_resid 2662 * and nm_readdirsize are both exact multiples of DIRBLKSIZ, this 2663 * will never make readsize > nm_readdirsize. 2664 */ 2665 readsize = nmp->nm_readdirsize; 2666 if (readsize > uio_uio_resid(uiop)) 2667 readsize = uio_uio_resid(uiop) + DIRBLKSIZ; 2668 2669 *attrflagp = 0; 2670 if (eofp) 2671 *eofp = 0; 2672 tresid = uio_uio_resid(uiop); 2673 cookie.lval[0] = cookiep->nfsuquad[0]; 2674 cookie.lval[1] = cookiep->nfsuquad[1]; 2675 nd->nd_mrep = NULL; 2676 2677 /* 2678 * For NFSv4, first create the "." and ".." entries. 2679 */ 2680 if (NFSHASNFSV4(nmp)) { 2681 reqsize = 6 * NFSX_UNSIGNED; 2682 NFSGETATTR_ATTRBIT(&dattrbits); 2683 NFSZERO_ATTRBIT(&attrbits); 2684 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_FILEID); 2685 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_TYPE); 2686 if (NFSISSET_ATTRBIT(&dnp->n_vattr.na_suppattr, 2687 NFSATTRBIT_MOUNTEDONFILEID)) { 2688 NFSSETBIT_ATTRBIT(&attrbits, 2689 NFSATTRBIT_MOUNTEDONFILEID); 2690 gotmnton = 1; 2691 } else { 2692 /* 2693 * Must fake it. Use the fileno, except when the 2694 * fsid is != to that of the directory. For that 2695 * case, generate a fake fileno that is not the same. 2696 */ 2697 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_FSID); 2698 gotmnton = 0; 2699 } 2700 2701 /* 2702 * Joy, oh joy. For V4 we get to hand craft '.' and '..'. 2703 */ 2704 if (uiop->uio_offset == 0) { 2705 #if defined(__FreeBSD_version) && __FreeBSD_version >= 800000 2706 error = VOP_GETATTR(vp, &nfsva.na_vattr, cred); 2707 #else 2708 error = VOP_GETATTR(vp, &nfsva.na_vattr, cred, p); 2709 #endif 2710 if (error) 2711 return (error); 2712 dotfileid = nfsva.na_fileid; 2713 NFSCL_REQSTART(nd, NFSPROC_LOOKUPP, vp); 2714 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2715 *tl++ = txdr_unsigned(NFSV4OP_GETFH); 2716 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2717 (void) nfsrv_putattrbit(nd, &attrbits); 2718 error = nfscl_request(nd, vp, p, cred, stuff); 2719 if (error) 2720 return (error); 2721 if (nd->nd_repstat == 0) { 2722 NFSM_DISSECT(tl, u_int32_t *, 3*NFSX_UNSIGNED); 2723 len = fxdr_unsigned(int, *(tl + 2)); 2724 if (len > 0 && len <= NFSX_V4FHMAX) 2725 error = nfsm_advance(nd, NFSM_RNDUP(len), -1); 2726 else 2727 error = EPERM; 2728 if (!error) { 2729 NFSM_DISSECT(tl, u_int32_t *, 2*NFSX_UNSIGNED); 2730 nfsva.na_mntonfileno = 0xffffffff; 2731 error = nfsv4_loadattr(nd, NULL, &nfsva, NULL, 2732 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0, 2733 NULL, NULL, NULL, p, cred); 2734 if (error) { 2735 dotdotfileid = dotfileid; 2736 } else if (gotmnton) { 2737 if (nfsva.na_mntonfileno != 0xffffffff) 2738 dotdotfileid = nfsva.na_mntonfileno; 2739 else 2740 dotdotfileid = nfsva.na_fileid; 2741 } else if (nfsva.na_filesid[0] == 2742 dnp->n_vattr.na_filesid[0] && 2743 nfsva.na_filesid[1] == 2744 dnp->n_vattr.na_filesid[1]) { 2745 dotdotfileid = nfsva.na_fileid; 2746 } else { 2747 do { 2748 fakefileno--; 2749 } while (fakefileno == 2750 nfsva.na_fileid); 2751 dotdotfileid = fakefileno; 2752 } 2753 } 2754 } else if (nd->nd_repstat == NFSERR_NOENT) { 2755 /* 2756 * Lookupp returns NFSERR_NOENT when we are 2757 * at the root, so just use the current dir. 2758 */ 2759 nd->nd_repstat = 0; 2760 dotdotfileid = dotfileid; 2761 } else { 2762 error = nd->nd_repstat; 2763 } 2764 mbuf_freem(nd->nd_mrep); 2765 if (error) 2766 return (error); 2767 nd->nd_mrep = NULL; 2768 dp = (struct dirent *) CAST_DOWN(caddr_t, uio_iov_base(uiop)); 2769 dp->d_type = DT_DIR; 2770 dp->d_fileno = dotfileid; 2771 dp->d_namlen = 1; 2772 dp->d_name[0] = '.'; 2773 dp->d_name[1] = '\0'; 2774 dp->d_reclen = DIRENT_SIZE(dp) + NFSX_HYPER; 2775 /* 2776 * Just make these offset cookie 0. 2777 */ 2778 tl = (u_int32_t *)&dp->d_name[4]; 2779 *tl++ = 0; 2780 *tl = 0; 2781 blksiz += dp->d_reclen; 2782 uio_uio_resid_add(uiop, -(dp->d_reclen)); 2783 uiop->uio_offset += dp->d_reclen; 2784 uio_iov_base_add(uiop, dp->d_reclen); 2785 uio_iov_len_add(uiop, -(dp->d_reclen)); 2786 dp = (struct dirent *) CAST_DOWN(caddr_t, uio_iov_base(uiop)); 2787 dp->d_type = DT_DIR; 2788 dp->d_fileno = dotdotfileid; 2789 dp->d_namlen = 2; 2790 dp->d_name[0] = '.'; 2791 dp->d_name[1] = '.'; 2792 dp->d_name[2] = '\0'; 2793 dp->d_reclen = DIRENT_SIZE(dp) + NFSX_HYPER; 2794 /* 2795 * Just make these offset cookie 0. 2796 */ 2797 tl = (u_int32_t *)&dp->d_name[4]; 2798 *tl++ = 0; 2799 *tl = 0; 2800 blksiz += dp->d_reclen; 2801 uio_uio_resid_add(uiop, -(dp->d_reclen)); 2802 uiop->uio_offset += dp->d_reclen; 2803 uio_iov_base_add(uiop, dp->d_reclen); 2804 uio_iov_len_add(uiop, -(dp->d_reclen)); 2805 } 2806 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_RDATTRERROR); 2807 } else { 2808 reqsize = 5 * NFSX_UNSIGNED; 2809 } 2810 2811 2812 /* 2813 * Loop around doing readdir rpc's of size readsize. 2814 * The stopping criteria is EOF or buffer full. 2815 */ 2816 while (more_dirs && bigenough) { 2817 *attrflagp = 0; 2818 NFSCL_REQSTART(nd, NFSPROC_READDIR, vp); 2819 if (nd->nd_flag & ND_NFSV2) { 2820 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2821 *tl++ = cookie.lval[1]; 2822 *tl = txdr_unsigned(readsize); 2823 } else { 2824 NFSM_BUILD(tl, u_int32_t *, reqsize); 2825 *tl++ = cookie.lval[0]; 2826 *tl++ = cookie.lval[1]; 2827 if (cookie.qval == 0) { 2828 *tl++ = 0; 2829 *tl++ = 0; 2830 } else { 2831 NFSLOCKNODE(dnp); 2832 *tl++ = dnp->n_cookieverf.nfsuquad[0]; 2833 *tl++ = dnp->n_cookieverf.nfsuquad[1]; 2834 NFSUNLOCKNODE(dnp); 2835 } 2836 if (nd->nd_flag & ND_NFSV4) { 2837 *tl++ = txdr_unsigned(readsize); 2838 *tl = txdr_unsigned(readsize); 2839 (void) nfsrv_putattrbit(nd, &attrbits); 2840 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2841 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2842 (void) nfsrv_putattrbit(nd, &dattrbits); 2843 } else { 2844 *tl = txdr_unsigned(readsize); 2845 } 2846 } 2847 error = nfscl_request(nd, vp, p, cred, stuff); 2848 if (error) 2849 return (error); 2850 if (!(nd->nd_flag & ND_NFSV2)) { 2851 if (nd->nd_flag & ND_NFSV3) 2852 error = nfscl_postop_attr(nd, nap, attrflagp, 2853 stuff); 2854 if (!nd->nd_repstat && !error) { 2855 NFSM_DISSECT(tl, u_int32_t *, NFSX_HYPER); 2856 NFSLOCKNODE(dnp); 2857 dnp->n_cookieverf.nfsuquad[0] = *tl++; 2858 dnp->n_cookieverf.nfsuquad[1] = *tl; 2859 NFSUNLOCKNODE(dnp); 2860 } 2861 } 2862 if (nd->nd_repstat || error) { 2863 if (!error) 2864 error = nd->nd_repstat; 2865 goto nfsmout; 2866 } 2867 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2868 more_dirs = fxdr_unsigned(int, *tl); 2869 if (!more_dirs) 2870 tryformoredirs = 0; 2871 2872 /* loop thru the dir entries, doctoring them to 4bsd form */ 2873 while (more_dirs && bigenough) { 2874 if (nd->nd_flag & ND_NFSV4) { 2875 NFSM_DISSECT(tl, u_int32_t *, 3*NFSX_UNSIGNED); 2876 ncookie.lval[0] = *tl++; 2877 ncookie.lval[1] = *tl++; 2878 len = fxdr_unsigned(int, *tl); 2879 } else if (nd->nd_flag & ND_NFSV3) { 2880 NFSM_DISSECT(tl, u_int32_t *, 3*NFSX_UNSIGNED); 2881 nfsva.na_fileid = fxdr_hyper(tl); 2882 tl += 2; 2883 len = fxdr_unsigned(int, *tl); 2884 } else { 2885 NFSM_DISSECT(tl, u_int32_t *, 2*NFSX_UNSIGNED); 2886 nfsva.na_fileid = 2887 fxdr_unsigned(long, *tl++); 2888 len = fxdr_unsigned(int, *tl); 2889 } 2890 if (len <= 0 || len > NFS_MAXNAMLEN) { 2891 error = EBADRPC; 2892 goto nfsmout; 2893 } 2894 tlen = NFSM_RNDUP(len); 2895 if (tlen == len) 2896 tlen += 4; /* To ensure null termination */ 2897 left = DIRBLKSIZ - blksiz; 2898 if ((int)(tlen + DIRHDSIZ + NFSX_HYPER) > left) { 2899 dp->d_reclen += left; 2900 uio_iov_base_add(uiop, left); 2901 uio_iov_len_add(uiop, -(left)); 2902 uio_uio_resid_add(uiop, -(left)); 2903 uiop->uio_offset += left; 2904 blksiz = 0; 2905 } 2906 if ((int)(tlen + DIRHDSIZ + NFSX_HYPER) > uio_uio_resid(uiop)) 2907 bigenough = 0; 2908 if (bigenough) { 2909 dp = (struct dirent *) CAST_DOWN(caddr_t, uio_iov_base(uiop)); 2910 dp->d_namlen = len; 2911 dp->d_reclen = tlen + DIRHDSIZ + NFSX_HYPER; 2912 dp->d_type = DT_UNKNOWN; 2913 blksiz += dp->d_reclen; 2914 if (blksiz == DIRBLKSIZ) 2915 blksiz = 0; 2916 uio_uio_resid_add(uiop, -(DIRHDSIZ)); 2917 uiop->uio_offset += DIRHDSIZ; 2918 uio_iov_base_add(uiop, DIRHDSIZ); 2919 uio_iov_len_add(uiop, -(DIRHDSIZ)); 2920 error = nfsm_mbufuio(nd, uiop, len); 2921 if (error) 2922 goto nfsmout; 2923 cp = CAST_DOWN(caddr_t, uio_iov_base(uiop)); 2924 tlen -= len; 2925 *cp = '\0'; /* null terminate */ 2926 cp += tlen; /* points to cookie storage */ 2927 tl2 = (u_int32_t *)cp; 2928 uio_iov_base_add(uiop, (tlen + NFSX_HYPER)); 2929 uio_iov_len_add(uiop, -(tlen + NFSX_HYPER)); 2930 uio_uio_resid_add(uiop, -(tlen + NFSX_HYPER)); 2931 uiop->uio_offset += (tlen + NFSX_HYPER); 2932 } else { 2933 error = nfsm_advance(nd, NFSM_RNDUP(len), -1); 2934 if (error) 2935 goto nfsmout; 2936 } 2937 if (nd->nd_flag & ND_NFSV4) { 2938 rderr = 0; 2939 nfsva.na_mntonfileno = 0xffffffff; 2940 error = nfsv4_loadattr(nd, NULL, &nfsva, NULL, 2941 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0, 2942 NULL, NULL, &rderr, p, cred); 2943 if (error) 2944 goto nfsmout; 2945 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2946 } else if (nd->nd_flag & ND_NFSV3) { 2947 NFSM_DISSECT(tl, u_int32_t *, 3*NFSX_UNSIGNED); 2948 ncookie.lval[0] = *tl++; 2949 ncookie.lval[1] = *tl++; 2950 } else { 2951 NFSM_DISSECT(tl, u_int32_t *, 2*NFSX_UNSIGNED); 2952 ncookie.lval[0] = 0; 2953 ncookie.lval[1] = *tl++; 2954 } 2955 if (bigenough) { 2956 if (nd->nd_flag & ND_NFSV4) { 2957 if (rderr) { 2958 dp->d_fileno = 0; 2959 } else { 2960 if (gotmnton) { 2961 if (nfsva.na_mntonfileno != 0xffffffff) 2962 dp->d_fileno = nfsva.na_mntonfileno; 2963 else 2964 dp->d_fileno = nfsva.na_fileid; 2965 } else if (nfsva.na_filesid[0] == 2966 dnp->n_vattr.na_filesid[0] && 2967 nfsva.na_filesid[1] == 2968 dnp->n_vattr.na_filesid[1]) { 2969 dp->d_fileno = nfsva.na_fileid; 2970 } else { 2971 do { 2972 fakefileno--; 2973 } while (fakefileno == 2974 nfsva.na_fileid); 2975 dp->d_fileno = fakefileno; 2976 } 2977 dp->d_type = vtonfs_dtype(nfsva.na_type); 2978 } 2979 } else { 2980 dp->d_fileno = nfsva.na_fileid; 2981 } 2982 *tl2++ = cookiep->nfsuquad[0] = cookie.lval[0] = 2983 ncookie.lval[0]; 2984 *tl2 = cookiep->nfsuquad[1] = cookie.lval[1] = 2985 ncookie.lval[1]; 2986 } 2987 more_dirs = fxdr_unsigned(int, *tl); 2988 } 2989 /* 2990 * If at end of rpc data, get the eof boolean 2991 */ 2992 if (!more_dirs) { 2993 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2994 eof = fxdr_unsigned(int, *tl); 2995 if (tryformoredirs) 2996 more_dirs = !eof; 2997 if (nd->nd_flag & ND_NFSV4) { 2998 error = nfscl_postop_attr(nd, nap, attrflagp, 2999 stuff); 3000 if (error) 3001 goto nfsmout; 3002 } 3003 } 3004 mbuf_freem(nd->nd_mrep); 3005 nd->nd_mrep = NULL; 3006 } 3007 /* 3008 * Fill last record, iff any, out to a multiple of DIRBLKSIZ 3009 * by increasing d_reclen for the last record. 3010 */ 3011 if (blksiz > 0) { 3012 left = DIRBLKSIZ - blksiz; 3013 dp->d_reclen += left; 3014 uio_iov_base_add(uiop, left); 3015 uio_iov_len_add(uiop, -(left)); 3016 uio_uio_resid_add(uiop, -(left)); 3017 uiop->uio_offset += left; 3018 } 3019 3020 /* 3021 * If returning no data, assume end of file. 3022 * If not bigenough, return not end of file, since you aren't 3023 * returning all the data 3024 * Otherwise, return the eof flag from the server. 3025 */ 3026 if (eofp) { 3027 if (tresid == ((size_t)(uio_uio_resid(uiop)))) 3028 *eofp = 1; 3029 else if (!bigenough) 3030 *eofp = 0; 3031 else 3032 *eofp = eof; 3033 } 3034 3035 /* 3036 * Add extra empty records to any remaining DIRBLKSIZ chunks. 3037 */ 3038 while (uio_uio_resid(uiop) > 0 && ((size_t)(uio_uio_resid(uiop))) != tresid) { 3039 dp = (struct dirent *) CAST_DOWN(caddr_t, uio_iov_base(uiop)); 3040 dp->d_type = DT_UNKNOWN; 3041 dp->d_fileno = 0; 3042 dp->d_namlen = 0; 3043 dp->d_name[0] = '\0'; 3044 tl = (u_int32_t *)&dp->d_name[4]; 3045 *tl++ = cookie.lval[0]; 3046 *tl = cookie.lval[1]; 3047 dp->d_reclen = DIRBLKSIZ; 3048 uio_iov_base_add(uiop, DIRBLKSIZ); 3049 uio_iov_len_add(uiop, -(DIRBLKSIZ)); 3050 uio_uio_resid_add(uiop, -(DIRBLKSIZ)); 3051 uiop->uio_offset += DIRBLKSIZ; 3052 } 3053 3054 nfsmout: 3055 if (nd->nd_mrep != NULL) 3056 mbuf_freem(nd->nd_mrep); 3057 return (error); 3058 } 3059 3060 #ifndef APPLE 3061 /* 3062 * NFS V3 readdir plus RPC. Used in place of nfsrpc_readdir(). 3063 * (Also used for NFS V4 when mount flag set.) 3064 * (ditto above w.r.t. multiple of DIRBLKSIZ, etc.) 3065 */ 3066 APPLESTATIC int 3067 nfsrpc_readdirplus(vnode_t vp, struct uio *uiop, nfsuint64 *cookiep, 3068 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, 3069 int *eofp, void *stuff) 3070 { 3071 int len, left; 3072 struct dirent *dp = NULL; 3073 u_int32_t *tl; 3074 vnode_t newvp = NULLVP; 3075 struct nfsrv_descript nfsd, *nd = &nfsd; 3076 struct nameidata nami, *ndp = &nami; 3077 struct componentname *cnp = &ndp->ni_cnd; 3078 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 3079 struct nfsnode *dnp = VTONFS(vp), *np; 3080 struct nfsvattr nfsva; 3081 struct nfsfh *nfhp; 3082 nfsquad_t cookie, ncookie; 3083 int error = 0, tlen, more_dirs = 1, blksiz = 0, bigenough = 1; 3084 int attrflag, tryformoredirs = 1, eof = 0, gotmnton = 0; 3085 int isdotdot = 0, unlocknewvp = 0; 3086 long dotfileid, dotdotfileid = 0, fileno = 0; 3087 char *cp; 3088 nfsattrbit_t attrbits, dattrbits; 3089 size_t tresid; 3090 u_int32_t *tl2 = NULL, fakefileno = 0xffffffff, rderr; 3091 struct timespec dctime; 3092 3093 KASSERT(uiop->uio_iovcnt == 1 && 3094 (uio_uio_resid(uiop) & (DIRBLKSIZ - 1)) == 0, 3095 ("nfs readdirplusrpc bad uio")); 3096 timespecclear(&dctime); 3097 *attrflagp = 0; 3098 if (eofp != NULL) 3099 *eofp = 0; 3100 ndp->ni_dvp = vp; 3101 nd->nd_mrep = NULL; 3102 cookie.lval[0] = cookiep->nfsuquad[0]; 3103 cookie.lval[1] = cookiep->nfsuquad[1]; 3104 tresid = uio_uio_resid(uiop); 3105 3106 /* 3107 * For NFSv4, first create the "." and ".." entries. 3108 */ 3109 if (NFSHASNFSV4(nmp)) { 3110 NFSGETATTR_ATTRBIT(&dattrbits); 3111 NFSZERO_ATTRBIT(&attrbits); 3112 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_FILEID); 3113 if (NFSISSET_ATTRBIT(&dnp->n_vattr.na_suppattr, 3114 NFSATTRBIT_MOUNTEDONFILEID)) { 3115 NFSSETBIT_ATTRBIT(&attrbits, 3116 NFSATTRBIT_MOUNTEDONFILEID); 3117 gotmnton = 1; 3118 } else { 3119 /* 3120 * Must fake it. Use the fileno, except when the 3121 * fsid is != to that of the directory. For that 3122 * case, generate a fake fileno that is not the same. 3123 */ 3124 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_FSID); 3125 gotmnton = 0; 3126 } 3127 3128 /* 3129 * Joy, oh joy. For V4 we get to hand craft '.' and '..'. 3130 */ 3131 if (uiop->uio_offset == 0) { 3132 #if defined(__FreeBSD_version) && __FreeBSD_version >= 800000 3133 error = VOP_GETATTR(vp, &nfsva.na_vattr, cred); 3134 #else 3135 error = VOP_GETATTR(vp, &nfsva.na_vattr, cred, p); 3136 #endif 3137 if (error) 3138 return (error); 3139 dctime = nfsva.na_ctime; 3140 dotfileid = nfsva.na_fileid; 3141 NFSCL_REQSTART(nd, NFSPROC_LOOKUPP, vp); 3142 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 3143 *tl++ = txdr_unsigned(NFSV4OP_GETFH); 3144 *tl = txdr_unsigned(NFSV4OP_GETATTR); 3145 (void) nfsrv_putattrbit(nd, &attrbits); 3146 error = nfscl_request(nd, vp, p, cred, stuff); 3147 if (error) 3148 return (error); 3149 if (nd->nd_repstat == 0) { 3150 NFSM_DISSECT(tl, u_int32_t *, 3*NFSX_UNSIGNED); 3151 len = fxdr_unsigned(int, *(tl + 2)); 3152 if (len > 0 && len <= NFSX_V4FHMAX) 3153 error = nfsm_advance(nd, NFSM_RNDUP(len), -1); 3154 else 3155 error = EPERM; 3156 if (!error) { 3157 NFSM_DISSECT(tl, u_int32_t *, 2*NFSX_UNSIGNED); 3158 nfsva.na_mntonfileno = 0xffffffff; 3159 error = nfsv4_loadattr(nd, NULL, &nfsva, NULL, 3160 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0, 3161 NULL, NULL, NULL, p, cred); 3162 if (error) { 3163 dotdotfileid = dotfileid; 3164 } else if (gotmnton) { 3165 if (nfsva.na_mntonfileno != 0xffffffff) 3166 dotdotfileid = nfsva.na_mntonfileno; 3167 else 3168 dotdotfileid = nfsva.na_fileid; 3169 } else if (nfsva.na_filesid[0] == 3170 dnp->n_vattr.na_filesid[0] && 3171 nfsva.na_filesid[1] == 3172 dnp->n_vattr.na_filesid[1]) { 3173 dotdotfileid = nfsva.na_fileid; 3174 } else { 3175 do { 3176 fakefileno--; 3177 } while (fakefileno == 3178 nfsva.na_fileid); 3179 dotdotfileid = fakefileno; 3180 } 3181 } 3182 } else if (nd->nd_repstat == NFSERR_NOENT) { 3183 /* 3184 * Lookupp returns NFSERR_NOENT when we are 3185 * at the root, so just use the current dir. 3186 */ 3187 nd->nd_repstat = 0; 3188 dotdotfileid = dotfileid; 3189 } else { 3190 error = nd->nd_repstat; 3191 } 3192 mbuf_freem(nd->nd_mrep); 3193 if (error) 3194 return (error); 3195 nd->nd_mrep = NULL; 3196 dp = (struct dirent *)uio_iov_base(uiop); 3197 dp->d_type = DT_DIR; 3198 dp->d_fileno = dotfileid; 3199 dp->d_namlen = 1; 3200 dp->d_name[0] = '.'; 3201 dp->d_name[1] = '\0'; 3202 dp->d_reclen = DIRENT_SIZE(dp) + NFSX_HYPER; 3203 /* 3204 * Just make these offset cookie 0. 3205 */ 3206 tl = (u_int32_t *)&dp->d_name[4]; 3207 *tl++ = 0; 3208 *tl = 0; 3209 blksiz += dp->d_reclen; 3210 uio_uio_resid_add(uiop, -(dp->d_reclen)); 3211 uiop->uio_offset += dp->d_reclen; 3212 uio_iov_base_add(uiop, dp->d_reclen); 3213 uio_iov_len_add(uiop, -(dp->d_reclen)); 3214 dp = (struct dirent *)uio_iov_base(uiop); 3215 dp->d_type = DT_DIR; 3216 dp->d_fileno = dotdotfileid; 3217 dp->d_namlen = 2; 3218 dp->d_name[0] = '.'; 3219 dp->d_name[1] = '.'; 3220 dp->d_name[2] = '\0'; 3221 dp->d_reclen = DIRENT_SIZE(dp) + NFSX_HYPER; 3222 /* 3223 * Just make these offset cookie 0. 3224 */ 3225 tl = (u_int32_t *)&dp->d_name[4]; 3226 *tl++ = 0; 3227 *tl = 0; 3228 blksiz += dp->d_reclen; 3229 uio_uio_resid_add(uiop, -(dp->d_reclen)); 3230 uiop->uio_offset += dp->d_reclen; 3231 uio_iov_base_add(uiop, dp->d_reclen); 3232 uio_iov_len_add(uiop, -(dp->d_reclen)); 3233 } 3234 NFSREADDIRPLUS_ATTRBIT(&attrbits); 3235 if (gotmnton) 3236 NFSSETBIT_ATTRBIT(&attrbits, 3237 NFSATTRBIT_MOUNTEDONFILEID); 3238 } 3239 3240 /* 3241 * Loop around doing readdir rpc's of size nm_readdirsize. 3242 * The stopping criteria is EOF or buffer full. 3243 */ 3244 while (more_dirs && bigenough) { 3245 *attrflagp = 0; 3246 NFSCL_REQSTART(nd, NFSPROC_READDIRPLUS, vp); 3247 NFSM_BUILD(tl, u_int32_t *, 6 * NFSX_UNSIGNED); 3248 *tl++ = cookie.lval[0]; 3249 *tl++ = cookie.lval[1]; 3250 if (cookie.qval == 0) { 3251 *tl++ = 0; 3252 *tl++ = 0; 3253 } else { 3254 NFSLOCKNODE(dnp); 3255 *tl++ = dnp->n_cookieverf.nfsuquad[0]; 3256 *tl++ = dnp->n_cookieverf.nfsuquad[1]; 3257 NFSUNLOCKNODE(dnp); 3258 } 3259 *tl++ = txdr_unsigned(nmp->nm_readdirsize); 3260 *tl = txdr_unsigned(nmp->nm_readdirsize); 3261 if (nd->nd_flag & ND_NFSV4) { 3262 (void) nfsrv_putattrbit(nd, &attrbits); 3263 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 3264 *tl = txdr_unsigned(NFSV4OP_GETATTR); 3265 (void) nfsrv_putattrbit(nd, &dattrbits); 3266 } 3267 error = nfscl_request(nd, vp, p, cred, stuff); 3268 if (error) 3269 return (error); 3270 if (nd->nd_flag & ND_NFSV3) 3271 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 3272 if (nd->nd_repstat || error) { 3273 if (!error) 3274 error = nd->nd_repstat; 3275 goto nfsmout; 3276 } 3277 if ((nd->nd_flag & ND_NFSV3) != 0 && *attrflagp != 0) 3278 dctime = nap->na_ctime; 3279 NFSM_DISSECT(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 3280 NFSLOCKNODE(dnp); 3281 dnp->n_cookieverf.nfsuquad[0] = *tl++; 3282 dnp->n_cookieverf.nfsuquad[1] = *tl++; 3283 NFSUNLOCKNODE(dnp); 3284 more_dirs = fxdr_unsigned(int, *tl); 3285 if (!more_dirs) 3286 tryformoredirs = 0; 3287 3288 /* loop thru the dir entries, doctoring them to 4bsd form */ 3289 while (more_dirs && bigenough) { 3290 NFSM_DISSECT(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 3291 if (nd->nd_flag & ND_NFSV4) { 3292 ncookie.lval[0] = *tl++; 3293 ncookie.lval[1] = *tl++; 3294 } else { 3295 fileno = fxdr_unsigned(long, *++tl); 3296 tl++; 3297 } 3298 len = fxdr_unsigned(int, *tl); 3299 if (len <= 0 || len > NFS_MAXNAMLEN) { 3300 error = EBADRPC; 3301 goto nfsmout; 3302 } 3303 tlen = NFSM_RNDUP(len); 3304 if (tlen == len) 3305 tlen += 4; /* To ensure null termination */ 3306 left = DIRBLKSIZ - blksiz; 3307 if ((tlen + DIRHDSIZ + NFSX_HYPER) > left) { 3308 dp->d_reclen += left; 3309 uio_iov_base_add(uiop, left); 3310 uio_iov_len_add(uiop, -(left)); 3311 uio_uio_resid_add(uiop, -(left)); 3312 uiop->uio_offset += left; 3313 blksiz = 0; 3314 } 3315 if ((tlen + DIRHDSIZ + NFSX_HYPER) > uio_uio_resid(uiop)) 3316 bigenough = 0; 3317 if (bigenough) { 3318 dp = (struct dirent *)uio_iov_base(uiop); 3319 dp->d_namlen = len; 3320 dp->d_reclen = tlen + DIRHDSIZ + NFSX_HYPER; 3321 dp->d_type = DT_UNKNOWN; 3322 blksiz += dp->d_reclen; 3323 if (blksiz == DIRBLKSIZ) 3324 blksiz = 0; 3325 uio_uio_resid_add(uiop, -(DIRHDSIZ)); 3326 uiop->uio_offset += DIRHDSIZ; 3327 uio_iov_base_add(uiop, DIRHDSIZ); 3328 uio_iov_len_add(uiop, -(DIRHDSIZ)); 3329 cnp->cn_nameptr = uio_iov_base(uiop); 3330 cnp->cn_namelen = len; 3331 NFSCNHASHZERO(cnp); 3332 error = nfsm_mbufuio(nd, uiop, len); 3333 if (error) 3334 goto nfsmout; 3335 cp = uio_iov_base(uiop); 3336 tlen -= len; 3337 *cp = '\0'; 3338 cp += tlen; /* points to cookie storage */ 3339 tl2 = (u_int32_t *)cp; 3340 if (len == 2 && cnp->cn_nameptr[0] == '.' && 3341 cnp->cn_nameptr[1] == '.') 3342 isdotdot = 1; 3343 else 3344 isdotdot = 0; 3345 uio_iov_base_add(uiop, (tlen + NFSX_HYPER)); 3346 uio_iov_len_add(uiop, -(tlen + NFSX_HYPER)); 3347 uio_uio_resid_add(uiop, -(tlen + NFSX_HYPER)); 3348 uiop->uio_offset += (tlen + NFSX_HYPER); 3349 } else { 3350 error = nfsm_advance(nd, NFSM_RNDUP(len), -1); 3351 if (error) 3352 goto nfsmout; 3353 } 3354 nfhp = NULL; 3355 if (nd->nd_flag & ND_NFSV3) { 3356 NFSM_DISSECT(tl, u_int32_t *, 3*NFSX_UNSIGNED); 3357 ncookie.lval[0] = *tl++; 3358 ncookie.lval[1] = *tl++; 3359 attrflag = fxdr_unsigned(int, *tl); 3360 if (attrflag) { 3361 error = nfsm_loadattr(nd, &nfsva); 3362 if (error) 3363 goto nfsmout; 3364 } 3365 NFSM_DISSECT(tl,u_int32_t *,NFSX_UNSIGNED); 3366 if (*tl) { 3367 error = nfsm_getfh(nd, &nfhp); 3368 if (error) 3369 goto nfsmout; 3370 } 3371 if (!attrflag && nfhp != NULL) { 3372 FREE((caddr_t)nfhp, M_NFSFH); 3373 nfhp = NULL; 3374 } 3375 } else { 3376 rderr = 0; 3377 nfsva.na_mntonfileno = 0xffffffff; 3378 error = nfsv4_loadattr(nd, NULL, &nfsva, &nfhp, 3379 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0, 3380 NULL, NULL, &rderr, p, cred); 3381 if (error) 3382 goto nfsmout; 3383 } 3384 3385 if (bigenough) { 3386 if (nd->nd_flag & ND_NFSV4) { 3387 if (rderr) { 3388 dp->d_fileno = 0; 3389 } else if (gotmnton) { 3390 if (nfsva.na_mntonfileno != 0xffffffff) 3391 dp->d_fileno = nfsva.na_mntonfileno; 3392 else 3393 dp->d_fileno = nfsva.na_fileid; 3394 } else if (nfsva.na_filesid[0] == 3395 dnp->n_vattr.na_filesid[0] && 3396 nfsva.na_filesid[1] == 3397 dnp->n_vattr.na_filesid[1]) { 3398 dp->d_fileno = nfsva.na_fileid; 3399 } else { 3400 do { 3401 fakefileno--; 3402 } while (fakefileno == 3403 nfsva.na_fileid); 3404 dp->d_fileno = fakefileno; 3405 } 3406 } else { 3407 dp->d_fileno = fileno; 3408 } 3409 *tl2++ = cookiep->nfsuquad[0] = cookie.lval[0] = 3410 ncookie.lval[0]; 3411 *tl2 = cookiep->nfsuquad[1] = cookie.lval[1] = 3412 ncookie.lval[1]; 3413 3414 if (nfhp != NULL) { 3415 if (NFSRV_CMPFH(nfhp->nfh_fh, nfhp->nfh_len, 3416 dnp->n_fhp->nfh_fh, dnp->n_fhp->nfh_len)) { 3417 VREF(vp); 3418 newvp = vp; 3419 unlocknewvp = 0; 3420 FREE((caddr_t)nfhp, M_NFSFH); 3421 np = dnp; 3422 } else if (isdotdot != 0) { 3423 /* 3424 * Skip doing a nfscl_nget() call for "..". 3425 * There's a race between acquiring the nfs 3426 * node here and lookups that look for the 3427 * directory being read (in the parent). 3428 * It would try to get a lock on ".." here, 3429 * owning the lock on the directory being 3430 * read. Lookup will hold the lock on ".." 3431 * and try to acquire the lock on the 3432 * directory being read. 3433 * If the directory is unlocked/relocked, 3434 * then there is a LOR with the buflock 3435 * vp is relocked. 3436 */ 3437 free(nfhp, M_NFSFH); 3438 } else { 3439 error = nfscl_nget(vnode_mount(vp), vp, 3440 nfhp, cnp, p, &np, NULL, LK_EXCLUSIVE); 3441 if (!error) { 3442 newvp = NFSTOV(np); 3443 unlocknewvp = 1; 3444 } 3445 } 3446 nfhp = NULL; 3447 if (newvp != NULLVP) { 3448 error = nfscl_loadattrcache(&newvp, 3449 &nfsva, NULL, NULL, 0, 0); 3450 if (error) { 3451 if (unlocknewvp) 3452 vput(newvp); 3453 else 3454 vrele(newvp); 3455 goto nfsmout; 3456 } 3457 dp->d_type = 3458 vtonfs_dtype(np->n_vattr.na_type); 3459 ndp->ni_vp = newvp; 3460 NFSCNHASH(cnp, HASHINIT); 3461 if (cnp->cn_namelen <= NCHNAMLEN && 3462 (newvp->v_type != VDIR || 3463 dctime.tv_sec != 0)) { 3464 cache_enter_time(ndp->ni_dvp, 3465 ndp->ni_vp, cnp, 3466 &nfsva.na_ctime, 3467 newvp->v_type != VDIR ? NULL : 3468 &dctime); 3469 } 3470 if (unlocknewvp) 3471 vput(newvp); 3472 else 3473 vrele(newvp); 3474 newvp = NULLVP; 3475 } 3476 } 3477 } else if (nfhp != NULL) { 3478 FREE((caddr_t)nfhp, M_NFSFH); 3479 } 3480 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 3481 more_dirs = fxdr_unsigned(int, *tl); 3482 } 3483 /* 3484 * If at end of rpc data, get the eof boolean 3485 */ 3486 if (!more_dirs) { 3487 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 3488 eof = fxdr_unsigned(int, *tl); 3489 if (tryformoredirs) 3490 more_dirs = !eof; 3491 if (nd->nd_flag & ND_NFSV4) { 3492 error = nfscl_postop_attr(nd, nap, attrflagp, 3493 stuff); 3494 if (error) 3495 goto nfsmout; 3496 } 3497 } 3498 mbuf_freem(nd->nd_mrep); 3499 nd->nd_mrep = NULL; 3500 } 3501 /* 3502 * Fill last record, iff any, out to a multiple of DIRBLKSIZ 3503 * by increasing d_reclen for the last record. 3504 */ 3505 if (blksiz > 0) { 3506 left = DIRBLKSIZ - blksiz; 3507 dp->d_reclen += left; 3508 uio_iov_base_add(uiop, left); 3509 uio_iov_len_add(uiop, -(left)); 3510 uio_uio_resid_add(uiop, -(left)); 3511 uiop->uio_offset += left; 3512 } 3513 3514 /* 3515 * If returning no data, assume end of file. 3516 * If not bigenough, return not end of file, since you aren't 3517 * returning all the data 3518 * Otherwise, return the eof flag from the server. 3519 */ 3520 if (eofp != NULL) { 3521 if (tresid == uio_uio_resid(uiop)) 3522 *eofp = 1; 3523 else if (!bigenough) 3524 *eofp = 0; 3525 else 3526 *eofp = eof; 3527 } 3528 3529 /* 3530 * Add extra empty records to any remaining DIRBLKSIZ chunks. 3531 */ 3532 while (uio_uio_resid(uiop) > 0 && uio_uio_resid(uiop) != tresid) { 3533 dp = (struct dirent *)uio_iov_base(uiop); 3534 dp->d_type = DT_UNKNOWN; 3535 dp->d_fileno = 0; 3536 dp->d_namlen = 0; 3537 dp->d_name[0] = '\0'; 3538 tl = (u_int32_t *)&dp->d_name[4]; 3539 *tl++ = cookie.lval[0]; 3540 *tl = cookie.lval[1]; 3541 dp->d_reclen = DIRBLKSIZ; 3542 uio_iov_base_add(uiop, DIRBLKSIZ); 3543 uio_iov_len_add(uiop, -(DIRBLKSIZ)); 3544 uio_uio_resid_add(uiop, -(DIRBLKSIZ)); 3545 uiop->uio_offset += DIRBLKSIZ; 3546 } 3547 3548 nfsmout: 3549 if (nd->nd_mrep != NULL) 3550 mbuf_freem(nd->nd_mrep); 3551 return (error); 3552 } 3553 #endif /* !APPLE */ 3554 3555 /* 3556 * Nfs commit rpc 3557 */ 3558 APPLESTATIC int 3559 nfsrpc_commit(vnode_t vp, u_quad_t offset, int cnt, struct ucred *cred, 3560 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff) 3561 { 3562 u_int32_t *tl; 3563 struct nfsrv_descript nfsd, *nd = &nfsd; 3564 nfsattrbit_t attrbits; 3565 int error; 3566 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 3567 3568 *attrflagp = 0; 3569 NFSCL_REQSTART(nd, NFSPROC_COMMIT, vp); 3570 NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 3571 txdr_hyper(offset, tl); 3572 tl += 2; 3573 *tl = txdr_unsigned(cnt); 3574 if (nd->nd_flag & ND_NFSV4) { 3575 /* 3576 * And do a Getattr op. 3577 */ 3578 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 3579 *tl = txdr_unsigned(NFSV4OP_GETATTR); 3580 NFSGETATTR_ATTRBIT(&attrbits); 3581 (void) nfsrv_putattrbit(nd, &attrbits); 3582 } 3583 error = nfscl_request(nd, vp, p, cred, stuff); 3584 if (error) 3585 return (error); 3586 error = nfscl_wcc_data(nd, vp, nap, attrflagp, NULL, stuff); 3587 if (!error && !nd->nd_repstat) { 3588 NFSM_DISSECT(tl, u_int32_t *, NFSX_VERF); 3589 NFSLOCKMNT(nmp); 3590 if (NFSBCMP(nmp->nm_verf, tl, NFSX_VERF)) { 3591 NFSBCOPY(tl, nmp->nm_verf, NFSX_VERF); 3592 nd->nd_repstat = NFSERR_STALEWRITEVERF; 3593 } 3594 NFSUNLOCKMNT(nmp); 3595 if (nd->nd_flag & ND_NFSV4) 3596 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 3597 } 3598 nfsmout: 3599 if (!error && nd->nd_repstat) 3600 error = nd->nd_repstat; 3601 mbuf_freem(nd->nd_mrep); 3602 return (error); 3603 } 3604 3605 /* 3606 * NFS byte range lock rpc. 3607 * (Mostly just calls one of the three lower level RPC routines.) 3608 */ 3609 APPLESTATIC int 3610 nfsrpc_advlock(vnode_t vp, off_t size, int op, struct flock *fl, 3611 int reclaim, struct ucred *cred, NFSPROC_T *p, void *id, int flags) 3612 { 3613 struct nfscllockowner *lp; 3614 struct nfsclclient *clp; 3615 struct nfsfh *nfhp; 3616 struct nfsrv_descript nfsd, *nd = &nfsd; 3617 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 3618 u_int64_t off, len; 3619 off_t start, end; 3620 u_int32_t clidrev = 0; 3621 int error = 0, newone = 0, expireret = 0, retrycnt, donelocally; 3622 int callcnt, dorpc; 3623 3624 /* 3625 * Convert the flock structure into a start and end and do POSIX 3626 * bounds checking. 3627 */ 3628 switch (fl->l_whence) { 3629 case SEEK_SET: 3630 case SEEK_CUR: 3631 /* 3632 * Caller is responsible for adding any necessary offset 3633 * when SEEK_CUR is used. 3634 */ 3635 start = fl->l_start; 3636 off = fl->l_start; 3637 break; 3638 case SEEK_END: 3639 start = size + fl->l_start; 3640 off = size + fl->l_start; 3641 break; 3642 default: 3643 return (EINVAL); 3644 }; 3645 if (start < 0) 3646 return (EINVAL); 3647 if (fl->l_len != 0) { 3648 end = start + fl->l_len - 1; 3649 if (end < start) 3650 return (EINVAL); 3651 } 3652 3653 len = fl->l_len; 3654 if (len == 0) 3655 len = NFS64BITSSET; 3656 retrycnt = 0; 3657 do { 3658 nd->nd_repstat = 0; 3659 if (op == F_GETLK) { 3660 error = nfscl_getcl(vnode_mount(vp), cred, p, 1, &clp); 3661 if (error) 3662 return (error); 3663 error = nfscl_lockt(vp, clp, off, len, fl, p, id, flags); 3664 if (!error) { 3665 clidrev = clp->nfsc_clientidrev; 3666 error = nfsrpc_lockt(nd, vp, clp, off, len, fl, cred, 3667 p, id, flags); 3668 } else if (error == -1) { 3669 error = 0; 3670 } 3671 nfscl_clientrelease(clp); 3672 } else if (op == F_UNLCK && fl->l_type == F_UNLCK) { 3673 /* 3674 * We must loop around for all lockowner cases. 3675 */ 3676 callcnt = 0; 3677 error = nfscl_getcl(vnode_mount(vp), cred, p, 1, &clp); 3678 if (error) 3679 return (error); 3680 do { 3681 error = nfscl_relbytelock(vp, off, len, cred, p, callcnt, 3682 clp, id, flags, &lp, &dorpc); 3683 /* 3684 * If it returns a NULL lp, we're done. 3685 */ 3686 if (lp == NULL) { 3687 if (callcnt == 0) 3688 nfscl_clientrelease(clp); 3689 else 3690 nfscl_releasealllocks(clp, vp, p, id, flags); 3691 return (error); 3692 } 3693 if (nmp->nm_clp != NULL) 3694 clidrev = nmp->nm_clp->nfsc_clientidrev; 3695 else 3696 clidrev = 0; 3697 /* 3698 * If the server doesn't support Posix lock semantics, 3699 * only allow locks on the entire file, since it won't 3700 * handle overlapping byte ranges. 3701 * There might still be a problem when a lock 3702 * upgrade/downgrade (read<->write) occurs, since the 3703 * server "might" expect an unlock first? 3704 */ 3705 if (dorpc && (lp->nfsl_open->nfso_posixlock || 3706 (off == 0 && len == NFS64BITSSET))) { 3707 /* 3708 * Since the lock records will go away, we must 3709 * wait for grace and delay here. 3710 */ 3711 do { 3712 error = nfsrpc_locku(nd, nmp, lp, off, len, 3713 NFSV4LOCKT_READ, cred, p, 0); 3714 if ((nd->nd_repstat == NFSERR_GRACE || 3715 nd->nd_repstat == NFSERR_DELAY) && 3716 error == 0) 3717 (void) nfs_catnap(PZERO, (int)nd->nd_repstat, 3718 "nfs_advlock"); 3719 } while ((nd->nd_repstat == NFSERR_GRACE || 3720 nd->nd_repstat == NFSERR_DELAY) && error == 0); 3721 } 3722 callcnt++; 3723 } while (error == 0 && nd->nd_repstat == 0); 3724 nfscl_releasealllocks(clp, vp, p, id, flags); 3725 } else if (op == F_SETLK) { 3726 error = nfscl_getbytelock(vp, off, len, fl->l_type, cred, p, 3727 NULL, 0, id, flags, NULL, NULL, &lp, &newone, &donelocally); 3728 if (error || donelocally) { 3729 return (error); 3730 } 3731 if (nmp->nm_clp != NULL) 3732 clidrev = nmp->nm_clp->nfsc_clientidrev; 3733 else 3734 clidrev = 0; 3735 nfhp = VTONFS(vp)->n_fhp; 3736 if (!lp->nfsl_open->nfso_posixlock && 3737 (off != 0 || len != NFS64BITSSET)) { 3738 error = EINVAL; 3739 } else { 3740 error = nfsrpc_lock(nd, nmp, vp, nfhp->nfh_fh, 3741 nfhp->nfh_len, lp, newone, reclaim, off, 3742 len, fl->l_type, cred, p, 0); 3743 } 3744 if (!error) 3745 error = nd->nd_repstat; 3746 nfscl_lockrelease(lp, error, newone); 3747 } else { 3748 error = EINVAL; 3749 } 3750 if (!error) 3751 error = nd->nd_repstat; 3752 if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 3753 error == NFSERR_STALEDONTRECOVER || 3754 error == NFSERR_STALECLIENTID || error == NFSERR_DELAY || 3755 error == NFSERR_BADSESSION) { 3756 (void) nfs_catnap(PZERO, error, "nfs_advlock"); 3757 } else if ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) 3758 && clidrev != 0) { 3759 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p); 3760 retrycnt++; 3761 } 3762 } while (error == NFSERR_GRACE || 3763 error == NFSERR_STALECLIENTID || error == NFSERR_DELAY || 3764 error == NFSERR_STALEDONTRECOVER || error == NFSERR_STALESTATEID || 3765 error == NFSERR_BADSESSION || 3766 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) && 3767 expireret == 0 && clidrev != 0 && retrycnt < 4)); 3768 if (error && retrycnt >= 4) 3769 error = EIO; 3770 return (error); 3771 } 3772 3773 /* 3774 * The lower level routine for the LockT case. 3775 */ 3776 APPLESTATIC int 3777 nfsrpc_lockt(struct nfsrv_descript *nd, vnode_t vp, 3778 struct nfsclclient *clp, u_int64_t off, u_int64_t len, struct flock *fl, 3779 struct ucred *cred, NFSPROC_T *p, void *id, int flags) 3780 { 3781 u_int32_t *tl; 3782 int error, type, size; 3783 uint8_t own[NFSV4CL_LOCKNAMELEN + NFSX_V4FHMAX]; 3784 struct nfsnode *np; 3785 struct nfsmount *nmp; 3786 3787 nmp = VFSTONFS(vp->v_mount); 3788 NFSCL_REQSTART(nd, NFSPROC_LOCKT, vp); 3789 NFSM_BUILD(tl, u_int32_t *, 7 * NFSX_UNSIGNED); 3790 if (fl->l_type == F_RDLCK) 3791 *tl++ = txdr_unsigned(NFSV4LOCKT_READ); 3792 else 3793 *tl++ = txdr_unsigned(NFSV4LOCKT_WRITE); 3794 txdr_hyper(off, tl); 3795 tl += 2; 3796 txdr_hyper(len, tl); 3797 tl += 2; 3798 *tl++ = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[0]; 3799 *tl = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[1]; 3800 nfscl_filllockowner(id, own, flags); 3801 np = VTONFS(vp); 3802 NFSBCOPY(np->n_fhp->nfh_fh, &own[NFSV4CL_LOCKNAMELEN], 3803 np->n_fhp->nfh_len); 3804 (void)nfsm_strtom(nd, own, NFSV4CL_LOCKNAMELEN + np->n_fhp->nfh_len); 3805 error = nfscl_request(nd, vp, p, cred, NULL); 3806 if (error) 3807 return (error); 3808 if (nd->nd_repstat == 0) { 3809 fl->l_type = F_UNLCK; 3810 } else if (nd->nd_repstat == NFSERR_DENIED) { 3811 nd->nd_repstat = 0; 3812 fl->l_whence = SEEK_SET; 3813 NFSM_DISSECT(tl, u_int32_t *, 8 * NFSX_UNSIGNED); 3814 fl->l_start = fxdr_hyper(tl); 3815 tl += 2; 3816 len = fxdr_hyper(tl); 3817 tl += 2; 3818 if (len == NFS64BITSSET) 3819 fl->l_len = 0; 3820 else 3821 fl->l_len = len; 3822 type = fxdr_unsigned(int, *tl++); 3823 if (type == NFSV4LOCKT_WRITE) 3824 fl->l_type = F_WRLCK; 3825 else 3826 fl->l_type = F_RDLCK; 3827 /* 3828 * XXX For now, I have no idea what to do with the 3829 * conflicting lock_owner, so I'll just set the pid == 0 3830 * and skip over the lock_owner. 3831 */ 3832 fl->l_pid = (pid_t)0; 3833 tl += 2; 3834 size = fxdr_unsigned(int, *tl); 3835 if (size < 0 || size > NFSV4_OPAQUELIMIT) 3836 error = EBADRPC; 3837 if (!error) 3838 error = nfsm_advance(nd, NFSM_RNDUP(size), -1); 3839 } else if (nd->nd_repstat == NFSERR_STALECLIENTID || 3840 nd->nd_repstat == NFSERR_BADSESSION) 3841 nfscl_initiate_recovery(clp); 3842 nfsmout: 3843 mbuf_freem(nd->nd_mrep); 3844 return (error); 3845 } 3846 3847 /* 3848 * Lower level function that performs the LockU RPC. 3849 */ 3850 static int 3851 nfsrpc_locku(struct nfsrv_descript *nd, struct nfsmount *nmp, 3852 struct nfscllockowner *lp, u_int64_t off, u_int64_t len, 3853 u_int32_t type, struct ucred *cred, NFSPROC_T *p, int syscred) 3854 { 3855 u_int32_t *tl; 3856 int error; 3857 3858 nfscl_reqstart(nd, NFSPROC_LOCKU, nmp, lp->nfsl_open->nfso_fh, 3859 lp->nfsl_open->nfso_fhlen, NULL, NULL); 3860 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID + 6 * NFSX_UNSIGNED); 3861 *tl++ = txdr_unsigned(type); 3862 *tl = txdr_unsigned(lp->nfsl_seqid); 3863 if (nfstest_outofseq && 3864 (arc4random() % nfstest_outofseq) == 0) 3865 *tl = txdr_unsigned(lp->nfsl_seqid + 1); 3866 tl++; 3867 if (NFSHASNFSV4N(nmp)) 3868 *tl++ = 0; 3869 else 3870 *tl++ = lp->nfsl_stateid.seqid; 3871 *tl++ = lp->nfsl_stateid.other[0]; 3872 *tl++ = lp->nfsl_stateid.other[1]; 3873 *tl++ = lp->nfsl_stateid.other[2]; 3874 txdr_hyper(off, tl); 3875 tl += 2; 3876 txdr_hyper(len, tl); 3877 if (syscred) 3878 nd->nd_flag |= ND_USEGSSNAME; 3879 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 3880 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 3881 NFSCL_INCRSEQID(lp->nfsl_seqid, nd); 3882 if (error) 3883 return (error); 3884 if (nd->nd_repstat == 0) { 3885 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID); 3886 lp->nfsl_stateid.seqid = *tl++; 3887 lp->nfsl_stateid.other[0] = *tl++; 3888 lp->nfsl_stateid.other[1] = *tl++; 3889 lp->nfsl_stateid.other[2] = *tl; 3890 } else if (nd->nd_repstat == NFSERR_STALESTATEID || 3891 nd->nd_repstat == NFSERR_BADSESSION) 3892 nfscl_initiate_recovery(lp->nfsl_open->nfso_own->nfsow_clp); 3893 nfsmout: 3894 mbuf_freem(nd->nd_mrep); 3895 return (error); 3896 } 3897 3898 /* 3899 * The actual Lock RPC. 3900 */ 3901 APPLESTATIC int 3902 nfsrpc_lock(struct nfsrv_descript *nd, struct nfsmount *nmp, vnode_t vp, 3903 u_int8_t *nfhp, int fhlen, struct nfscllockowner *lp, int newone, 3904 int reclaim, u_int64_t off, u_int64_t len, short type, struct ucred *cred, 3905 NFSPROC_T *p, int syscred) 3906 { 3907 u_int32_t *tl; 3908 int error, size; 3909 uint8_t own[NFSV4CL_LOCKNAMELEN + NFSX_V4FHMAX]; 3910 3911 nfscl_reqstart(nd, NFSPROC_LOCK, nmp, nfhp, fhlen, NULL, NULL); 3912 NFSM_BUILD(tl, u_int32_t *, 7 * NFSX_UNSIGNED); 3913 if (type == F_RDLCK) 3914 *tl++ = txdr_unsigned(NFSV4LOCKT_READ); 3915 else 3916 *tl++ = txdr_unsigned(NFSV4LOCKT_WRITE); 3917 *tl++ = txdr_unsigned(reclaim); 3918 txdr_hyper(off, tl); 3919 tl += 2; 3920 txdr_hyper(len, tl); 3921 tl += 2; 3922 if (newone) { 3923 *tl = newnfs_true; 3924 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID + 3925 2 * NFSX_UNSIGNED + NFSX_HYPER); 3926 *tl++ = txdr_unsigned(lp->nfsl_open->nfso_own->nfsow_seqid); 3927 if (NFSHASNFSV4N(nmp)) 3928 *tl++ = 0; 3929 else 3930 *tl++ = lp->nfsl_open->nfso_stateid.seqid; 3931 *tl++ = lp->nfsl_open->nfso_stateid.other[0]; 3932 *tl++ = lp->nfsl_open->nfso_stateid.other[1]; 3933 *tl++ = lp->nfsl_open->nfso_stateid.other[2]; 3934 *tl++ = txdr_unsigned(lp->nfsl_seqid); 3935 *tl++ = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[0]; 3936 *tl = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[1]; 3937 NFSBCOPY(lp->nfsl_owner, own, NFSV4CL_LOCKNAMELEN); 3938 NFSBCOPY(nfhp, &own[NFSV4CL_LOCKNAMELEN], fhlen); 3939 (void)nfsm_strtom(nd, own, NFSV4CL_LOCKNAMELEN + fhlen); 3940 } else { 3941 *tl = newnfs_false; 3942 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID + NFSX_UNSIGNED); 3943 if (NFSHASNFSV4N(nmp)) 3944 *tl++ = 0; 3945 else 3946 *tl++ = lp->nfsl_stateid.seqid; 3947 *tl++ = lp->nfsl_stateid.other[0]; 3948 *tl++ = lp->nfsl_stateid.other[1]; 3949 *tl++ = lp->nfsl_stateid.other[2]; 3950 *tl = txdr_unsigned(lp->nfsl_seqid); 3951 if (nfstest_outofseq && 3952 (arc4random() % nfstest_outofseq) == 0) 3953 *tl = txdr_unsigned(lp->nfsl_seqid + 1); 3954 } 3955 if (syscred) 3956 nd->nd_flag |= ND_USEGSSNAME; 3957 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, vp, p, cred, 3958 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 3959 if (error) 3960 return (error); 3961 if (newone) 3962 NFSCL_INCRSEQID(lp->nfsl_open->nfso_own->nfsow_seqid, nd); 3963 NFSCL_INCRSEQID(lp->nfsl_seqid, nd); 3964 if (nd->nd_repstat == 0) { 3965 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID); 3966 lp->nfsl_stateid.seqid = *tl++; 3967 lp->nfsl_stateid.other[0] = *tl++; 3968 lp->nfsl_stateid.other[1] = *tl++; 3969 lp->nfsl_stateid.other[2] = *tl; 3970 } else if (nd->nd_repstat == NFSERR_DENIED) { 3971 NFSM_DISSECT(tl, u_int32_t *, 8 * NFSX_UNSIGNED); 3972 size = fxdr_unsigned(int, *(tl + 7)); 3973 if (size < 0 || size > NFSV4_OPAQUELIMIT) 3974 error = EBADRPC; 3975 if (!error) 3976 error = nfsm_advance(nd, NFSM_RNDUP(size), -1); 3977 } else if (nd->nd_repstat == NFSERR_STALESTATEID || 3978 nd->nd_repstat == NFSERR_BADSESSION) 3979 nfscl_initiate_recovery(lp->nfsl_open->nfso_own->nfsow_clp); 3980 nfsmout: 3981 mbuf_freem(nd->nd_mrep); 3982 return (error); 3983 } 3984 3985 /* 3986 * nfs statfs rpc 3987 * (always called with the vp for the mount point) 3988 */ 3989 APPLESTATIC int 3990 nfsrpc_statfs(vnode_t vp, struct nfsstatfs *sbp, struct nfsfsinfo *fsp, 3991 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, 3992 void *stuff) 3993 { 3994 u_int32_t *tl = NULL; 3995 struct nfsrv_descript nfsd, *nd = &nfsd; 3996 struct nfsmount *nmp; 3997 nfsattrbit_t attrbits; 3998 int error; 3999 4000 *attrflagp = 0; 4001 nmp = VFSTONFS(vnode_mount(vp)); 4002 if (NFSHASNFSV4(nmp)) { 4003 /* 4004 * For V4, you actually do a getattr. 4005 */ 4006 NFSCL_REQSTART(nd, NFSPROC_GETATTR, vp); 4007 NFSSTATFS_GETATTRBIT(&attrbits); 4008 (void) nfsrv_putattrbit(nd, &attrbits); 4009 nd->nd_flag |= ND_USEGSSNAME; 4010 error = nfscl_request(nd, vp, p, cred, stuff); 4011 if (error) 4012 return (error); 4013 if (nd->nd_repstat == 0) { 4014 error = nfsv4_loadattr(nd, NULL, nap, NULL, NULL, 0, 4015 NULL, NULL, sbp, fsp, NULL, 0, NULL, NULL, NULL, p, 4016 cred); 4017 if (!error) { 4018 nmp->nm_fsid[0] = nap->na_filesid[0]; 4019 nmp->nm_fsid[1] = nap->na_filesid[1]; 4020 NFSSETHASSETFSID(nmp); 4021 *attrflagp = 1; 4022 } 4023 } else { 4024 error = nd->nd_repstat; 4025 } 4026 if (error) 4027 goto nfsmout; 4028 } else { 4029 NFSCL_REQSTART(nd, NFSPROC_FSSTAT, vp); 4030 error = nfscl_request(nd, vp, p, cred, stuff); 4031 if (error) 4032 return (error); 4033 if (nd->nd_flag & ND_NFSV3) { 4034 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 4035 if (error) 4036 goto nfsmout; 4037 } 4038 if (nd->nd_repstat) { 4039 error = nd->nd_repstat; 4040 goto nfsmout; 4041 } 4042 NFSM_DISSECT(tl, u_int32_t *, 4043 NFSX_STATFS(nd->nd_flag & ND_NFSV3)); 4044 } 4045 if (NFSHASNFSV3(nmp)) { 4046 sbp->sf_tbytes = fxdr_hyper(tl); tl += 2; 4047 sbp->sf_fbytes = fxdr_hyper(tl); tl += 2; 4048 sbp->sf_abytes = fxdr_hyper(tl); tl += 2; 4049 sbp->sf_tfiles = fxdr_hyper(tl); tl += 2; 4050 sbp->sf_ffiles = fxdr_hyper(tl); tl += 2; 4051 sbp->sf_afiles = fxdr_hyper(tl); tl += 2; 4052 sbp->sf_invarsec = fxdr_unsigned(u_int32_t, *tl); 4053 } else if (NFSHASNFSV4(nmp) == 0) { 4054 sbp->sf_tsize = fxdr_unsigned(u_int32_t, *tl++); 4055 sbp->sf_bsize = fxdr_unsigned(u_int32_t, *tl++); 4056 sbp->sf_blocks = fxdr_unsigned(u_int32_t, *tl++); 4057 sbp->sf_bfree = fxdr_unsigned(u_int32_t, *tl++); 4058 sbp->sf_bavail = fxdr_unsigned(u_int32_t, *tl); 4059 } 4060 nfsmout: 4061 mbuf_freem(nd->nd_mrep); 4062 return (error); 4063 } 4064 4065 /* 4066 * nfs pathconf rpc 4067 */ 4068 APPLESTATIC int 4069 nfsrpc_pathconf(vnode_t vp, struct nfsv3_pathconf *pc, 4070 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, 4071 void *stuff) 4072 { 4073 struct nfsrv_descript nfsd, *nd = &nfsd; 4074 struct nfsmount *nmp; 4075 u_int32_t *tl; 4076 nfsattrbit_t attrbits; 4077 int error; 4078 4079 *attrflagp = 0; 4080 nmp = VFSTONFS(vnode_mount(vp)); 4081 if (NFSHASNFSV4(nmp)) { 4082 /* 4083 * For V4, you actually do a getattr. 4084 */ 4085 NFSCL_REQSTART(nd, NFSPROC_GETATTR, vp); 4086 NFSPATHCONF_GETATTRBIT(&attrbits); 4087 (void) nfsrv_putattrbit(nd, &attrbits); 4088 nd->nd_flag |= ND_USEGSSNAME; 4089 error = nfscl_request(nd, vp, p, cred, stuff); 4090 if (error) 4091 return (error); 4092 if (nd->nd_repstat == 0) { 4093 error = nfsv4_loadattr(nd, NULL, nap, NULL, NULL, 0, 4094 pc, NULL, NULL, NULL, NULL, 0, NULL, NULL, NULL, p, 4095 cred); 4096 if (!error) 4097 *attrflagp = 1; 4098 } else { 4099 error = nd->nd_repstat; 4100 } 4101 } else { 4102 NFSCL_REQSTART(nd, NFSPROC_PATHCONF, vp); 4103 error = nfscl_request(nd, vp, p, cred, stuff); 4104 if (error) 4105 return (error); 4106 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 4107 if (nd->nd_repstat && !error) 4108 error = nd->nd_repstat; 4109 if (!error) { 4110 NFSM_DISSECT(tl, u_int32_t *, NFSX_V3PATHCONF); 4111 pc->pc_linkmax = fxdr_unsigned(u_int32_t, *tl++); 4112 pc->pc_namemax = fxdr_unsigned(u_int32_t, *tl++); 4113 pc->pc_notrunc = fxdr_unsigned(u_int32_t, *tl++); 4114 pc->pc_chownrestricted = 4115 fxdr_unsigned(u_int32_t, *tl++); 4116 pc->pc_caseinsensitive = 4117 fxdr_unsigned(u_int32_t, *tl++); 4118 pc->pc_casepreserving = fxdr_unsigned(u_int32_t, *tl); 4119 } 4120 } 4121 nfsmout: 4122 mbuf_freem(nd->nd_mrep); 4123 return (error); 4124 } 4125 4126 /* 4127 * nfs version 3 fsinfo rpc call 4128 */ 4129 APPLESTATIC int 4130 nfsrpc_fsinfo(vnode_t vp, struct nfsfsinfo *fsp, struct ucred *cred, 4131 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff) 4132 { 4133 u_int32_t *tl; 4134 struct nfsrv_descript nfsd, *nd = &nfsd; 4135 int error; 4136 4137 *attrflagp = 0; 4138 NFSCL_REQSTART(nd, NFSPROC_FSINFO, vp); 4139 error = nfscl_request(nd, vp, p, cred, stuff); 4140 if (error) 4141 return (error); 4142 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 4143 if (nd->nd_repstat && !error) 4144 error = nd->nd_repstat; 4145 if (!error) { 4146 NFSM_DISSECT(tl, u_int32_t *, NFSX_V3FSINFO); 4147 fsp->fs_rtmax = fxdr_unsigned(u_int32_t, *tl++); 4148 fsp->fs_rtpref = fxdr_unsigned(u_int32_t, *tl++); 4149 fsp->fs_rtmult = fxdr_unsigned(u_int32_t, *tl++); 4150 fsp->fs_wtmax = fxdr_unsigned(u_int32_t, *tl++); 4151 fsp->fs_wtpref = fxdr_unsigned(u_int32_t, *tl++); 4152 fsp->fs_wtmult = fxdr_unsigned(u_int32_t, *tl++); 4153 fsp->fs_dtpref = fxdr_unsigned(u_int32_t, *tl++); 4154 fsp->fs_maxfilesize = fxdr_hyper(tl); 4155 tl += 2; 4156 fxdr_nfsv3time(tl, &fsp->fs_timedelta); 4157 tl += 2; 4158 fsp->fs_properties = fxdr_unsigned(u_int32_t, *tl); 4159 } 4160 nfsmout: 4161 mbuf_freem(nd->nd_mrep); 4162 return (error); 4163 } 4164 4165 /* 4166 * This function performs the Renew RPC. 4167 */ 4168 APPLESTATIC int 4169 nfsrpc_renew(struct nfsclclient *clp, struct nfsclds *dsp, struct ucred *cred, 4170 NFSPROC_T *p) 4171 { 4172 u_int32_t *tl; 4173 struct nfsrv_descript nfsd; 4174 struct nfsrv_descript *nd = &nfsd; 4175 struct nfsmount *nmp; 4176 int error; 4177 struct nfssockreq *nrp; 4178 4179 nmp = clp->nfsc_nmp; 4180 if (nmp == NULL) 4181 return (0); 4182 nfscl_reqstart(nd, NFSPROC_RENEW, nmp, NULL, 0, NULL, 4183 &dsp->nfsclds_sess); 4184 if (!NFSHASNFSV4N(nmp)) { 4185 /* NFSv4.1 just uses a Sequence Op and not a Renew. */ 4186 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 4187 *tl++ = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[0]; 4188 *tl = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[1]; 4189 } 4190 nrp = dsp->nfsclds_sockp; 4191 if (nrp == NULL) 4192 /* If NULL, use the MDS socket. */ 4193 nrp = &nmp->nm_sockreq; 4194 nd->nd_flag |= ND_USEGSSNAME; 4195 error = newnfs_request(nd, nmp, NULL, nrp, NULL, p, cred, 4196 NFS_PROG, NFS_VER4, NULL, 1, NULL, &dsp->nfsclds_sess); 4197 if (error) 4198 return (error); 4199 error = nd->nd_repstat; 4200 mbuf_freem(nd->nd_mrep); 4201 return (error); 4202 } 4203 4204 /* 4205 * This function performs the Releaselockowner RPC. 4206 */ 4207 APPLESTATIC int 4208 nfsrpc_rellockown(struct nfsmount *nmp, struct nfscllockowner *lp, 4209 uint8_t *fh, int fhlen, struct ucred *cred, NFSPROC_T *p) 4210 { 4211 struct nfsrv_descript nfsd, *nd = &nfsd; 4212 u_int32_t *tl; 4213 int error; 4214 uint8_t own[NFSV4CL_LOCKNAMELEN + NFSX_V4FHMAX]; 4215 4216 if (NFSHASNFSV4N(nmp)) { 4217 /* For NFSv4.1, do a FreeStateID. */ 4218 nfscl_reqstart(nd, NFSPROC_FREESTATEID, nmp, NULL, 0, NULL, 4219 NULL); 4220 nfsm_stateidtom(nd, &lp->nfsl_stateid, NFSSTATEID_PUTSTATEID); 4221 } else { 4222 nfscl_reqstart(nd, NFSPROC_RELEASELCKOWN, nmp, NULL, 0, NULL, 4223 NULL); 4224 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 4225 *tl++ = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[0]; 4226 *tl = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[1]; 4227 NFSBCOPY(lp->nfsl_owner, own, NFSV4CL_LOCKNAMELEN); 4228 NFSBCOPY(fh, &own[NFSV4CL_LOCKNAMELEN], fhlen); 4229 (void)nfsm_strtom(nd, own, NFSV4CL_LOCKNAMELEN + fhlen); 4230 } 4231 nd->nd_flag |= ND_USEGSSNAME; 4232 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 4233 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4234 if (error) 4235 return (error); 4236 error = nd->nd_repstat; 4237 mbuf_freem(nd->nd_mrep); 4238 return (error); 4239 } 4240 4241 /* 4242 * This function performs the Compound to get the mount pt FH. 4243 */ 4244 APPLESTATIC int 4245 nfsrpc_getdirpath(struct nfsmount *nmp, u_char *dirpath, struct ucred *cred, 4246 NFSPROC_T *p) 4247 { 4248 u_int32_t *tl; 4249 struct nfsrv_descript nfsd; 4250 struct nfsrv_descript *nd = &nfsd; 4251 u_char *cp, *cp2; 4252 int error, cnt, len, setnil; 4253 u_int32_t *opcntp; 4254 4255 nfscl_reqstart(nd, NFSPROC_PUTROOTFH, nmp, NULL, 0, &opcntp, NULL); 4256 cp = dirpath; 4257 cnt = 0; 4258 do { 4259 setnil = 0; 4260 while (*cp == '/') 4261 cp++; 4262 cp2 = cp; 4263 while (*cp2 != '\0' && *cp2 != '/') 4264 cp2++; 4265 if (*cp2 == '/') { 4266 setnil = 1; 4267 *cp2 = '\0'; 4268 } 4269 if (cp2 != cp) { 4270 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 4271 *tl = txdr_unsigned(NFSV4OP_LOOKUP); 4272 nfsm_strtom(nd, cp, strlen(cp)); 4273 cnt++; 4274 } 4275 if (setnil) 4276 *cp2++ = '/'; 4277 cp = cp2; 4278 } while (*cp != '\0'); 4279 if (NFSHASNFSV4N(nmp)) 4280 /* Has a Sequence Op done by nfscl_reqstart(). */ 4281 *opcntp = txdr_unsigned(3 + cnt); 4282 else 4283 *opcntp = txdr_unsigned(2 + cnt); 4284 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 4285 *tl = txdr_unsigned(NFSV4OP_GETFH); 4286 nd->nd_flag |= ND_USEGSSNAME; 4287 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 4288 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4289 if (error) 4290 return (error); 4291 if (nd->nd_repstat == 0) { 4292 NFSM_DISSECT(tl, u_int32_t *, (3 + 2 * cnt) * NFSX_UNSIGNED); 4293 tl += (2 + 2 * cnt); 4294 if ((len = fxdr_unsigned(int, *tl)) <= 0 || 4295 len > NFSX_FHMAX) { 4296 nd->nd_repstat = NFSERR_BADXDR; 4297 } else { 4298 nd->nd_repstat = nfsrv_mtostr(nd, nmp->nm_fh, len); 4299 if (nd->nd_repstat == 0) 4300 nmp->nm_fhsize = len; 4301 } 4302 } 4303 error = nd->nd_repstat; 4304 nfsmout: 4305 mbuf_freem(nd->nd_mrep); 4306 return (error); 4307 } 4308 4309 /* 4310 * This function performs the Delegreturn RPC. 4311 */ 4312 APPLESTATIC int 4313 nfsrpc_delegreturn(struct nfscldeleg *dp, struct ucred *cred, 4314 struct nfsmount *nmp, NFSPROC_T *p, int syscred) 4315 { 4316 u_int32_t *tl; 4317 struct nfsrv_descript nfsd; 4318 struct nfsrv_descript *nd = &nfsd; 4319 int error; 4320 4321 nfscl_reqstart(nd, NFSPROC_DELEGRETURN, nmp, dp->nfsdl_fh, 4322 dp->nfsdl_fhlen, NULL, NULL); 4323 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID); 4324 if (NFSHASNFSV4N(nmp)) 4325 *tl++ = 0; 4326 else 4327 *tl++ = dp->nfsdl_stateid.seqid; 4328 *tl++ = dp->nfsdl_stateid.other[0]; 4329 *tl++ = dp->nfsdl_stateid.other[1]; 4330 *tl = dp->nfsdl_stateid.other[2]; 4331 if (syscred) 4332 nd->nd_flag |= ND_USEGSSNAME; 4333 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 4334 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4335 if (error) 4336 return (error); 4337 error = nd->nd_repstat; 4338 mbuf_freem(nd->nd_mrep); 4339 return (error); 4340 } 4341 4342 /* 4343 * nfs getacl call. 4344 */ 4345 APPLESTATIC int 4346 nfsrpc_getacl(vnode_t vp, struct ucred *cred, NFSPROC_T *p, 4347 struct acl *aclp, void *stuff) 4348 { 4349 struct nfsrv_descript nfsd, *nd = &nfsd; 4350 int error; 4351 nfsattrbit_t attrbits; 4352 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 4353 4354 if (nfsrv_useacl == 0 || !NFSHASNFSV4(nmp)) 4355 return (EOPNOTSUPP); 4356 NFSCL_REQSTART(nd, NFSPROC_GETACL, vp); 4357 NFSZERO_ATTRBIT(&attrbits); 4358 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_ACL); 4359 (void) nfsrv_putattrbit(nd, &attrbits); 4360 error = nfscl_request(nd, vp, p, cred, stuff); 4361 if (error) 4362 return (error); 4363 if (!nd->nd_repstat) 4364 error = nfsv4_loadattr(nd, vp, NULL, NULL, NULL, 0, NULL, 4365 NULL, NULL, NULL, aclp, 0, NULL, NULL, NULL, p, cred); 4366 else 4367 error = nd->nd_repstat; 4368 mbuf_freem(nd->nd_mrep); 4369 return (error); 4370 } 4371 4372 /* 4373 * nfs setacl call. 4374 */ 4375 APPLESTATIC int 4376 nfsrpc_setacl(vnode_t vp, struct ucred *cred, NFSPROC_T *p, 4377 struct acl *aclp, void *stuff) 4378 { 4379 int error; 4380 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 4381 4382 if (nfsrv_useacl == 0 || !NFSHASNFSV4(nmp)) 4383 return (EOPNOTSUPP); 4384 error = nfsrpc_setattr(vp, NULL, aclp, cred, p, NULL, NULL, stuff); 4385 return (error); 4386 } 4387 4388 /* 4389 * nfs setacl call. 4390 */ 4391 static int 4392 nfsrpc_setaclrpc(vnode_t vp, struct ucred *cred, NFSPROC_T *p, 4393 struct acl *aclp, nfsv4stateid_t *stateidp, void *stuff) 4394 { 4395 struct nfsrv_descript nfsd, *nd = &nfsd; 4396 int error; 4397 nfsattrbit_t attrbits; 4398 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 4399 4400 if (!NFSHASNFSV4(nmp)) 4401 return (EOPNOTSUPP); 4402 NFSCL_REQSTART(nd, NFSPROC_SETACL, vp); 4403 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID); 4404 NFSZERO_ATTRBIT(&attrbits); 4405 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_ACL); 4406 (void) nfsv4_fillattr(nd, vnode_mount(vp), vp, aclp, NULL, NULL, 0, 4407 &attrbits, NULL, NULL, 0, 0, 0, 0, (uint64_t)0); 4408 error = nfscl_request(nd, vp, p, cred, stuff); 4409 if (error) 4410 return (error); 4411 /* Don't care about the pre/postop attributes */ 4412 mbuf_freem(nd->nd_mrep); 4413 return (nd->nd_repstat); 4414 } 4415 4416 /* 4417 * Do the NFSv4.1 Exchange ID. 4418 */ 4419 int 4420 nfsrpc_exchangeid(struct nfsmount *nmp, struct nfsclclient *clp, 4421 struct nfssockreq *nrp, uint32_t exchflags, struct nfsclds **dspp, 4422 struct ucred *cred, NFSPROC_T *p) 4423 { 4424 uint32_t *tl, v41flags; 4425 struct nfsrv_descript nfsd; 4426 struct nfsrv_descript *nd = &nfsd; 4427 struct nfsclds *dsp; 4428 struct timespec verstime; 4429 int error, len; 4430 4431 *dspp = NULL; 4432 nfscl_reqstart(nd, NFSPROC_EXCHANGEID, nmp, NULL, 0, NULL, NULL); 4433 NFSM_BUILD(tl, uint32_t *, 2 * NFSX_UNSIGNED); 4434 *tl++ = txdr_unsigned(nfsboottime.tv_sec); /* Client owner */ 4435 *tl = txdr_unsigned(clp->nfsc_rev); 4436 (void) nfsm_strtom(nd, clp->nfsc_id, clp->nfsc_idlen); 4437 4438 NFSM_BUILD(tl, uint32_t *, 3 * NFSX_UNSIGNED); 4439 *tl++ = txdr_unsigned(exchflags); 4440 *tl++ = txdr_unsigned(NFSV4EXCH_SP4NONE); 4441 4442 /* Set the implementation id4 */ 4443 *tl = txdr_unsigned(1); 4444 (void) nfsm_strtom(nd, "freebsd.org", strlen("freebsd.org")); 4445 (void) nfsm_strtom(nd, version, strlen(version)); 4446 NFSM_BUILD(tl, uint32_t *, NFSX_V4TIME); 4447 verstime.tv_sec = 1293840000; /* Jan 1, 2011 */ 4448 verstime.tv_nsec = 0; 4449 txdr_nfsv4time(&verstime, tl); 4450 nd->nd_flag |= ND_USEGSSNAME; 4451 error = newnfs_request(nd, nmp, NULL, nrp, NULL, p, cred, 4452 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4453 NFSCL_DEBUG(1, "exchangeid err=%d reps=%d\n", error, 4454 (int)nd->nd_repstat); 4455 if (error != 0) 4456 return (error); 4457 if (nd->nd_repstat == 0) { 4458 NFSM_DISSECT(tl, uint32_t *, 6 * NFSX_UNSIGNED + NFSX_HYPER); 4459 len = fxdr_unsigned(int, *(tl + 7)); 4460 if (len < 0 || len > NFSV4_OPAQUELIMIT) { 4461 error = NFSERR_BADXDR; 4462 goto nfsmout; 4463 } 4464 dsp = malloc(sizeof(struct nfsclds) + len, M_NFSCLDS, 4465 M_WAITOK | M_ZERO); 4466 dsp->nfsclds_expire = NFSD_MONOSEC + clp->nfsc_renew; 4467 dsp->nfsclds_servownlen = len; 4468 dsp->nfsclds_sess.nfsess_clientid.lval[0] = *tl++; 4469 dsp->nfsclds_sess.nfsess_clientid.lval[1] = *tl++; 4470 dsp->nfsclds_sess.nfsess_sequenceid = 4471 fxdr_unsigned(uint32_t, *tl++); 4472 v41flags = fxdr_unsigned(uint32_t, *tl); 4473 if ((v41flags & NFSV4EXCH_USEPNFSMDS) != 0 && 4474 NFSHASPNFSOPT(nmp)) { 4475 NFSCL_DEBUG(1, "set PNFS\n"); 4476 NFSLOCKMNT(nmp); 4477 nmp->nm_state |= NFSSTA_PNFS; 4478 NFSUNLOCKMNT(nmp); 4479 dsp->nfsclds_flags |= NFSCLDS_MDS; 4480 } 4481 if ((v41flags & NFSV4EXCH_USEPNFSDS) != 0) 4482 dsp->nfsclds_flags |= NFSCLDS_DS; 4483 if (len > 0) 4484 nd->nd_repstat = nfsrv_mtostr(nd, 4485 dsp->nfsclds_serverown, len); 4486 if (nd->nd_repstat == 0) { 4487 mtx_init(&dsp->nfsclds_mtx, "nfsds", NULL, MTX_DEF); 4488 mtx_init(&dsp->nfsclds_sess.nfsess_mtx, "nfssession", 4489 NULL, MTX_DEF); 4490 nfscl_initsessionslots(&dsp->nfsclds_sess); 4491 *dspp = dsp; 4492 } else 4493 free(dsp, M_NFSCLDS); 4494 } 4495 error = nd->nd_repstat; 4496 nfsmout: 4497 mbuf_freem(nd->nd_mrep); 4498 return (error); 4499 } 4500 4501 /* 4502 * Do the NFSv4.1 Create Session. 4503 */ 4504 int 4505 nfsrpc_createsession(struct nfsmount *nmp, struct nfsclsession *sep, 4506 struct nfssockreq *nrp, uint32_t sequenceid, int mds, struct ucred *cred, 4507 NFSPROC_T *p) 4508 { 4509 uint32_t crflags, *tl; 4510 struct nfsrv_descript nfsd; 4511 struct nfsrv_descript *nd = &nfsd; 4512 int error, irdcnt; 4513 4514 nfscl_reqstart(nd, NFSPROC_CREATESESSION, nmp, NULL, 0, NULL, NULL); 4515 NFSM_BUILD(tl, uint32_t *, 4 * NFSX_UNSIGNED); 4516 *tl++ = sep->nfsess_clientid.lval[0]; 4517 *tl++ = sep->nfsess_clientid.lval[1]; 4518 *tl++ = txdr_unsigned(sequenceid); 4519 crflags = (NFSMNT_RDONLY(nmp->nm_mountp) ? 0 : NFSV4CRSESS_PERSIST); 4520 if (nfscl_enablecallb != 0 && nfs_numnfscbd > 0) 4521 crflags |= NFSV4CRSESS_CONNBACKCHAN; 4522 *tl = txdr_unsigned(crflags); 4523 4524 /* Fill in fore channel attributes. */ 4525 NFSM_BUILD(tl, uint32_t *, 7 * NFSX_UNSIGNED); 4526 *tl++ = 0; /* Header pad size */ 4527 *tl++ = txdr_unsigned(100000); /* Max request size */ 4528 *tl++ = txdr_unsigned(100000); /* Max response size */ 4529 *tl++ = txdr_unsigned(4096); /* Max response size cached */ 4530 *tl++ = txdr_unsigned(20); /* Max operations */ 4531 *tl++ = txdr_unsigned(64); /* Max slots */ 4532 *tl = 0; /* No rdma ird */ 4533 4534 /* Fill in back channel attributes. */ 4535 NFSM_BUILD(tl, uint32_t *, 7 * NFSX_UNSIGNED); 4536 *tl++ = 0; /* Header pad size */ 4537 *tl++ = txdr_unsigned(10000); /* Max request size */ 4538 *tl++ = txdr_unsigned(10000); /* Max response size */ 4539 *tl++ = txdr_unsigned(4096); /* Max response size cached */ 4540 *tl++ = txdr_unsigned(4); /* Max operations */ 4541 *tl++ = txdr_unsigned(NFSV4_CBSLOTS); /* Max slots */ 4542 *tl = 0; /* No rdma ird */ 4543 4544 NFSM_BUILD(tl, uint32_t *, 8 * NFSX_UNSIGNED); 4545 *tl++ = txdr_unsigned(NFS_CALLBCKPROG); /* Call back prog # */ 4546 4547 /* Allow AUTH_SYS callbacks as uid, gid == 0. */ 4548 *tl++ = txdr_unsigned(1); /* Auth_sys only */ 4549 *tl++ = txdr_unsigned(AUTH_SYS); /* AUTH_SYS type */ 4550 *tl++ = txdr_unsigned(nfsboottime.tv_sec); /* time stamp */ 4551 *tl++ = 0; /* Null machine name */ 4552 *tl++ = 0; /* Uid == 0 */ 4553 *tl++ = 0; /* Gid == 0 */ 4554 *tl = 0; /* No additional gids */ 4555 nd->nd_flag |= ND_USEGSSNAME; 4556 error = newnfs_request(nd, nmp, NULL, nrp, NULL, p, cred, NFS_PROG, 4557 NFS_VER4, NULL, 1, NULL, NULL); 4558 if (error != 0) 4559 return (error); 4560 if (nd->nd_repstat == 0) { 4561 NFSM_DISSECT(tl, uint32_t *, NFSX_V4SESSIONID + 4562 2 * NFSX_UNSIGNED); 4563 bcopy(tl, sep->nfsess_sessionid, NFSX_V4SESSIONID); 4564 tl += NFSX_V4SESSIONID / NFSX_UNSIGNED; 4565 sep->nfsess_sequenceid = fxdr_unsigned(uint32_t, *tl++); 4566 crflags = fxdr_unsigned(uint32_t, *tl); 4567 if ((crflags & NFSV4CRSESS_PERSIST) != 0 && mds != 0) { 4568 NFSLOCKMNT(nmp); 4569 nmp->nm_state |= NFSSTA_SESSPERSIST; 4570 NFSUNLOCKMNT(nmp); 4571 } 4572 4573 /* Get the fore channel slot count. */ 4574 NFSM_DISSECT(tl, uint32_t *, 7 * NFSX_UNSIGNED); 4575 tl += 3; /* Skip the other counts. */ 4576 sep->nfsess_maxcache = fxdr_unsigned(int, *tl++); 4577 tl++; 4578 sep->nfsess_foreslots = fxdr_unsigned(uint16_t, *tl++); 4579 NFSCL_DEBUG(4, "fore slots=%d\n", (int)sep->nfsess_foreslots); 4580 irdcnt = fxdr_unsigned(int, *tl); 4581 if (irdcnt > 0) 4582 NFSM_DISSECT(tl, uint32_t *, irdcnt * NFSX_UNSIGNED); 4583 4584 /* and the back channel slot count. */ 4585 NFSM_DISSECT(tl, uint32_t *, 7 * NFSX_UNSIGNED); 4586 tl += 5; 4587 sep->nfsess_backslots = fxdr_unsigned(uint16_t, *tl); 4588 NFSCL_DEBUG(4, "back slots=%d\n", (int)sep->nfsess_backslots); 4589 } 4590 error = nd->nd_repstat; 4591 nfsmout: 4592 mbuf_freem(nd->nd_mrep); 4593 return (error); 4594 } 4595 4596 /* 4597 * Do the NFSv4.1 Destroy Session. 4598 */ 4599 int 4600 nfsrpc_destroysession(struct nfsmount *nmp, struct nfsclclient *clp, 4601 struct ucred *cred, NFSPROC_T *p) 4602 { 4603 uint32_t *tl; 4604 struct nfsrv_descript nfsd; 4605 struct nfsrv_descript *nd = &nfsd; 4606 int error; 4607 4608 nfscl_reqstart(nd, NFSPROC_DESTROYSESSION, nmp, NULL, 0, NULL, NULL); 4609 NFSM_BUILD(tl, uint32_t *, NFSX_V4SESSIONID); 4610 bcopy(NFSMNT_MDSSESSION(nmp)->nfsess_sessionid, tl, NFSX_V4SESSIONID); 4611 nd->nd_flag |= ND_USEGSSNAME; 4612 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 4613 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4614 if (error != 0) 4615 return (error); 4616 error = nd->nd_repstat; 4617 mbuf_freem(nd->nd_mrep); 4618 return (error); 4619 } 4620 4621 /* 4622 * Do the NFSv4.1 Destroy Client. 4623 */ 4624 int 4625 nfsrpc_destroyclient(struct nfsmount *nmp, struct nfsclclient *clp, 4626 struct ucred *cred, NFSPROC_T *p) 4627 { 4628 uint32_t *tl; 4629 struct nfsrv_descript nfsd; 4630 struct nfsrv_descript *nd = &nfsd; 4631 int error; 4632 4633 nfscl_reqstart(nd, NFSPROC_DESTROYCLIENT, nmp, NULL, 0, NULL, NULL); 4634 NFSM_BUILD(tl, uint32_t *, 2 * NFSX_UNSIGNED); 4635 *tl++ = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[0]; 4636 *tl = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[1]; 4637 nd->nd_flag |= ND_USEGSSNAME; 4638 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 4639 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4640 if (error != 0) 4641 return (error); 4642 error = nd->nd_repstat; 4643 mbuf_freem(nd->nd_mrep); 4644 return (error); 4645 } 4646 4647 /* 4648 * Do the NFSv4.1 LayoutGet. 4649 */ 4650 int 4651 nfsrpc_layoutget(struct nfsmount *nmp, uint8_t *fhp, int fhlen, int iomode, 4652 uint64_t offset, uint64_t len, uint64_t minlen, int layoutlen, 4653 nfsv4stateid_t *stateidp, int *retonclosep, struct nfsclflayouthead *flhp, 4654 struct ucred *cred, NFSPROC_T *p, void *stuff) 4655 { 4656 uint32_t *tl; 4657 struct nfsrv_descript nfsd, *nd = &nfsd; 4658 struct nfsfh *nfhp; 4659 struct nfsclflayout *flp, *prevflp, *tflp; 4660 int cnt, error, gotiomode, fhcnt, nfhlen, i, j; 4661 uint8_t *cp; 4662 uint64_t retlen; 4663 4664 flp = NULL; 4665 gotiomode = -1; 4666 nfscl_reqstart(nd, NFSPROC_LAYOUTGET, nmp, fhp, fhlen, NULL, NULL); 4667 NFSM_BUILD(tl, uint32_t *, 4 * NFSX_UNSIGNED + 3 * NFSX_HYPER + 4668 NFSX_STATEID); 4669 *tl++ = newnfs_false; /* Don't signal availability. */ 4670 *tl++ = txdr_unsigned(NFSLAYOUT_NFSV4_1_FILES); 4671 *tl++ = txdr_unsigned(iomode); 4672 txdr_hyper(offset, tl); 4673 tl += 2; 4674 txdr_hyper(len, tl); 4675 tl += 2; 4676 txdr_hyper(minlen, tl); 4677 tl += 2; 4678 *tl++ = txdr_unsigned(stateidp->seqid); 4679 NFSCL_DEBUG(4, "layget seq=%d\n", (int)stateidp->seqid); 4680 *tl++ = stateidp->other[0]; 4681 *tl++ = stateidp->other[1]; 4682 *tl++ = stateidp->other[2]; 4683 *tl = txdr_unsigned(layoutlen); 4684 nd->nd_flag |= ND_USEGSSNAME; 4685 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 4686 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4687 if (error != 0) 4688 return (error); 4689 if (nd->nd_repstat == 0) { 4690 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED + NFSX_STATEID); 4691 if (*tl++ != 0) 4692 *retonclosep = 1; 4693 else 4694 *retonclosep = 0; 4695 stateidp->seqid = fxdr_unsigned(uint32_t, *tl++); 4696 NFSCL_DEBUG(4, "retoncls=%d stseq=%d\n", *retonclosep, 4697 (int)stateidp->seqid); 4698 stateidp->other[0] = *tl++; 4699 stateidp->other[1] = *tl++; 4700 stateidp->other[2] = *tl++; 4701 cnt = fxdr_unsigned(int, *tl); 4702 NFSCL_DEBUG(4, "layg cnt=%d\n", cnt); 4703 if (cnt <= 0 || cnt > 10000) { 4704 /* Don't accept more than 10000 layouts in reply. */ 4705 error = NFSERR_BADXDR; 4706 goto nfsmout; 4707 } 4708 for (i = 0; i < cnt; i++) { 4709 /* Dissect all the way to the file handle cnt. */ 4710 NFSM_DISSECT(tl, uint32_t *, 3 * NFSX_HYPER + 4711 6 * NFSX_UNSIGNED + NFSX_V4DEVICEID); 4712 fhcnt = fxdr_unsigned(int, *(tl + 11 + 4713 NFSX_V4DEVICEID / NFSX_UNSIGNED)); 4714 NFSCL_DEBUG(4, "fhcnt=%d\n", fhcnt); 4715 if (fhcnt < 0 || fhcnt > 100) { 4716 /* Don't accept more than 100 file handles. */ 4717 error = NFSERR_BADXDR; 4718 goto nfsmout; 4719 } 4720 if (fhcnt > 1) 4721 flp = malloc(sizeof(*flp) + (fhcnt - 1) * 4722 sizeof(struct nfsfh *), 4723 M_NFSFLAYOUT, M_WAITOK); 4724 else 4725 flp = malloc(sizeof(*flp), 4726 M_NFSFLAYOUT, M_WAITOK); 4727 flp->nfsfl_flags = 0; 4728 flp->nfsfl_fhcnt = 0; 4729 flp->nfsfl_devp = NULL; 4730 flp->nfsfl_off = fxdr_hyper(tl); tl += 2; 4731 retlen = fxdr_hyper(tl); tl += 2; 4732 if (flp->nfsfl_off + retlen < flp->nfsfl_off) 4733 flp->nfsfl_end = UINT64_MAX - flp->nfsfl_off; 4734 else 4735 flp->nfsfl_end = flp->nfsfl_off + retlen; 4736 flp->nfsfl_iomode = fxdr_unsigned(int, *tl++); 4737 if (gotiomode == -1) 4738 gotiomode = flp->nfsfl_iomode; 4739 NFSCL_DEBUG(4, "layg reqiom=%d retiom=%d\n", iomode, 4740 (int)flp->nfsfl_iomode); 4741 if (fxdr_unsigned(int, *tl++) != 4742 NFSLAYOUT_NFSV4_1_FILES) { 4743 printf("NFSv4.1: got non-files layout\n"); 4744 error = NFSERR_BADXDR; 4745 goto nfsmout; 4746 } 4747 NFSBCOPY(++tl, flp->nfsfl_dev, NFSX_V4DEVICEID); 4748 tl += (NFSX_V4DEVICEID / NFSX_UNSIGNED); 4749 flp->nfsfl_util = fxdr_unsigned(uint32_t, *tl++); 4750 NFSCL_DEBUG(4, "flutil=0x%x\n", flp->nfsfl_util); 4751 flp->nfsfl_stripe1 = fxdr_unsigned(uint32_t, *tl++); 4752 flp->nfsfl_patoff = fxdr_hyper(tl); tl += 2; 4753 if (fxdr_unsigned(int, *tl) != fhcnt) { 4754 printf("EEK! bad fhcnt\n"); 4755 error = NFSERR_BADXDR; 4756 goto nfsmout; 4757 } 4758 for (j = 0; j < fhcnt; j++) { 4759 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 4760 nfhlen = fxdr_unsigned(int, *tl); 4761 if (nfhlen <= 0 || nfhlen > NFSX_V4FHMAX) { 4762 error = NFSERR_BADXDR; 4763 goto nfsmout; 4764 } 4765 nfhp = malloc(sizeof(*nfhp) + nfhlen - 1, 4766 M_NFSFH, M_WAITOK); 4767 flp->nfsfl_fh[j] = nfhp; 4768 flp->nfsfl_fhcnt++; 4769 nfhp->nfh_len = nfhlen; 4770 NFSM_DISSECT(cp, uint8_t *, NFSM_RNDUP(nfhlen)); 4771 NFSBCOPY(cp, nfhp->nfh_fh, nfhlen); 4772 } 4773 if (flp->nfsfl_iomode == gotiomode) { 4774 /* Keep the list in increasing offset order. */ 4775 tflp = LIST_FIRST(flhp); 4776 prevflp = NULL; 4777 while (tflp != NULL && 4778 tflp->nfsfl_off < flp->nfsfl_off) { 4779 prevflp = tflp; 4780 tflp = LIST_NEXT(tflp, nfsfl_list); 4781 } 4782 if (prevflp == NULL) 4783 LIST_INSERT_HEAD(flhp, flp, nfsfl_list); 4784 else 4785 LIST_INSERT_AFTER(prevflp, flp, 4786 nfsfl_list); 4787 } else { 4788 printf("nfscl_layoutget(): got wrong iomode\n"); 4789 nfscl_freeflayout(flp); 4790 } 4791 flp = NULL; 4792 } 4793 } 4794 if (nd->nd_repstat != 0 && error == 0) 4795 error = nd->nd_repstat; 4796 nfsmout: 4797 if (error != 0 && flp != NULL) 4798 nfscl_freeflayout(flp); 4799 mbuf_freem(nd->nd_mrep); 4800 return (error); 4801 } 4802 4803 /* 4804 * Do the NFSv4.1 Get Device Info. 4805 */ 4806 int 4807 nfsrpc_getdeviceinfo(struct nfsmount *nmp, uint8_t *deviceid, int layouttype, 4808 uint32_t *notifybitsp, struct nfscldevinfo **ndip, struct ucred *cred, 4809 NFSPROC_T *p) 4810 { 4811 uint32_t cnt, *tl; 4812 struct nfsrv_descript nfsd; 4813 struct nfsrv_descript *nd = &nfsd; 4814 struct sockaddr_storage ss; 4815 struct nfsclds *dsp = NULL, **dspp; 4816 struct nfscldevinfo *ndi; 4817 int addrcnt, bitcnt, error, i, isudp, j, pos, safilled, stripecnt; 4818 uint8_t stripeindex; 4819 4820 *ndip = NULL; 4821 ndi = NULL; 4822 nfscl_reqstart(nd, NFSPROC_GETDEVICEINFO, nmp, NULL, 0, NULL, NULL); 4823 NFSM_BUILD(tl, uint32_t *, NFSX_V4DEVICEID + 3 * NFSX_UNSIGNED); 4824 NFSBCOPY(deviceid, tl, NFSX_V4DEVICEID); 4825 tl += (NFSX_V4DEVICEID / NFSX_UNSIGNED); 4826 *tl++ = txdr_unsigned(layouttype); 4827 *tl++ = txdr_unsigned(100000); 4828 if (notifybitsp != NULL && *notifybitsp != 0) { 4829 *tl = txdr_unsigned(1); /* One word of bits. */ 4830 NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED); 4831 *tl = txdr_unsigned(*notifybitsp); 4832 } else 4833 *tl = txdr_unsigned(0); 4834 nd->nd_flag |= ND_USEGSSNAME; 4835 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 4836 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4837 if (error != 0) 4838 return (error); 4839 if (nd->nd_repstat == 0) { 4840 NFSM_DISSECT(tl, uint32_t *, 3 * NFSX_UNSIGNED); 4841 if (layouttype != fxdr_unsigned(int, *tl++)) 4842 printf("EEK! devinfo layout type not same!\n"); 4843 stripecnt = fxdr_unsigned(int, *++tl); 4844 NFSCL_DEBUG(4, "stripecnt=%d\n", stripecnt); 4845 if (stripecnt < 1 || stripecnt > 4096) { 4846 printf("NFS devinfo stripecnt %d: out of range\n", 4847 stripecnt); 4848 error = NFSERR_BADXDR; 4849 goto nfsmout; 4850 } 4851 NFSM_DISSECT(tl, uint32_t *, (stripecnt + 1) * NFSX_UNSIGNED); 4852 addrcnt = fxdr_unsigned(int, *(tl + stripecnt)); 4853 NFSCL_DEBUG(4, "addrcnt=%d\n", addrcnt); 4854 if (addrcnt < 1 || addrcnt > 128) { 4855 printf("NFS devinfo addrcnt %d: out of range\n", 4856 addrcnt); 4857 error = NFSERR_BADXDR; 4858 goto nfsmout; 4859 } 4860 4861 /* 4862 * Now we know how many stripe indices and addresses, so 4863 * we can allocate the structure the correct size. 4864 */ 4865 i = (stripecnt * sizeof(uint8_t)) / sizeof(struct nfsclds *) 4866 + 1; 4867 NFSCL_DEBUG(4, "stripeindices=%d\n", i); 4868 ndi = malloc(sizeof(*ndi) + (addrcnt + i) * 4869 sizeof(struct nfsclds *), M_NFSDEVINFO, M_WAITOK | M_ZERO); 4870 NFSBCOPY(deviceid, ndi->nfsdi_deviceid, NFSX_V4DEVICEID); 4871 ndi->nfsdi_refcnt = 0; 4872 ndi->nfsdi_stripecnt = stripecnt; 4873 ndi->nfsdi_addrcnt = addrcnt; 4874 /* Fill in the stripe indices. */ 4875 for (i = 0; i < stripecnt; i++) { 4876 stripeindex = fxdr_unsigned(uint8_t, *tl++); 4877 NFSCL_DEBUG(4, "stripeind=%d\n", stripeindex); 4878 if (stripeindex >= addrcnt) { 4879 printf("NFS devinfo stripeindex %d: too big\n", 4880 (int)stripeindex); 4881 error = NFSERR_BADXDR; 4882 goto nfsmout; 4883 } 4884 nfsfldi_setstripeindex(ndi, i, stripeindex); 4885 } 4886 4887 /* Now, dissect the server address(es). */ 4888 safilled = 0; 4889 for (i = 0; i < addrcnt; i++) { 4890 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 4891 cnt = fxdr_unsigned(uint32_t, *tl); 4892 if (cnt == 0) { 4893 printf("NFS devinfo 0 len addrlist\n"); 4894 error = NFSERR_BADXDR; 4895 goto nfsmout; 4896 } 4897 dspp = nfsfldi_addr(ndi, i); 4898 pos = arc4random() % cnt; /* Choose one. */ 4899 safilled = 0; 4900 for (j = 0; j < cnt; j++) { 4901 error = nfsv4_getipaddr(nd, &ss, &isudp); 4902 if (error != 0 && error != EPERM) { 4903 error = NFSERR_BADXDR; 4904 goto nfsmout; 4905 } 4906 if (error == 0 && isudp == 0) { 4907 /* 4908 * The algorithm is: 4909 * - use "pos" entry if it is of the 4910 * same af_family or none of them 4911 * is of the same af_family 4912 * else 4913 * - use the first one of the same 4914 * af_family. 4915 */ 4916 if ((safilled == 0 && ss.ss_family == 4917 nmp->nm_nam->sa_family) || 4918 (j == pos && 4919 (safilled == 0 || ss.ss_family == 4920 nmp->nm_nam->sa_family)) || 4921 (safilled == 1 && ss.ss_family == 4922 nmp->nm_nam->sa_family)) { 4923 error = nfsrpc_fillsa(nmp, &ss, 4924 &dsp, p); 4925 if (error == 0) { 4926 *dspp = dsp; 4927 if (ss.ss_family == 4928 nmp->nm_nam->sa_family) 4929 safilled = 2; 4930 else 4931 safilled = 1; 4932 } 4933 } 4934 } 4935 } 4936 if (safilled == 0) 4937 break; 4938 } 4939 4940 /* And the notify bits. */ 4941 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 4942 if (safilled != 0) { 4943 bitcnt = fxdr_unsigned(int, *tl); 4944 if (bitcnt > 0) { 4945 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 4946 if (notifybitsp != NULL) 4947 *notifybitsp = 4948 fxdr_unsigned(uint32_t, *tl); 4949 } 4950 *ndip = ndi; 4951 } else 4952 error = EPERM; 4953 } 4954 if (nd->nd_repstat != 0) 4955 error = nd->nd_repstat; 4956 nfsmout: 4957 if (error != 0 && ndi != NULL) 4958 nfscl_freedevinfo(ndi); 4959 mbuf_freem(nd->nd_mrep); 4960 return (error); 4961 } 4962 4963 /* 4964 * Do the NFSv4.1 LayoutCommit. 4965 */ 4966 int 4967 nfsrpc_layoutcommit(struct nfsmount *nmp, uint8_t *fh, int fhlen, int reclaim, 4968 uint64_t off, uint64_t len, uint64_t lastbyte, nfsv4stateid_t *stateidp, 4969 int layouttype, int layoutupdatecnt, uint8_t *layp, struct ucred *cred, 4970 NFSPROC_T *p, void *stuff) 4971 { 4972 uint32_t *tl; 4973 struct nfsrv_descript nfsd, *nd = &nfsd; 4974 int error, outcnt, i; 4975 uint8_t *cp; 4976 4977 nfscl_reqstart(nd, NFSPROC_LAYOUTCOMMIT, nmp, fh, fhlen, NULL, NULL); 4978 NFSM_BUILD(tl, uint32_t *, 5 * NFSX_UNSIGNED + 3 * NFSX_HYPER + 4979 NFSX_STATEID); 4980 txdr_hyper(off, tl); 4981 tl += 2; 4982 txdr_hyper(len, tl); 4983 tl += 2; 4984 if (reclaim != 0) 4985 *tl++ = newnfs_true; 4986 else 4987 *tl++ = newnfs_false; 4988 *tl++ = txdr_unsigned(stateidp->seqid); 4989 *tl++ = stateidp->other[0]; 4990 *tl++ = stateidp->other[1]; 4991 *tl++ = stateidp->other[2]; 4992 *tl++ = newnfs_true; 4993 if (lastbyte < off) 4994 lastbyte = off; 4995 else if (lastbyte >= (off + len)) 4996 lastbyte = off + len - 1; 4997 txdr_hyper(lastbyte, tl); 4998 tl += 2; 4999 *tl++ = newnfs_false; 5000 *tl++ = txdr_unsigned(layouttype); 5001 *tl = txdr_unsigned(layoutupdatecnt); 5002 if (layoutupdatecnt > 0) { 5003 KASSERT(layouttype != NFSLAYOUT_NFSV4_1_FILES, 5004 ("Must be nil for Files Layout")); 5005 outcnt = NFSM_RNDUP(layoutupdatecnt); 5006 NFSM_BUILD(cp, uint8_t *, outcnt); 5007 NFSBCOPY(layp, cp, layoutupdatecnt); 5008 cp += layoutupdatecnt; 5009 for (i = 0; i < (outcnt - layoutupdatecnt); i++) 5010 *cp++ = 0x0; 5011 } 5012 nd->nd_flag |= ND_USEGSSNAME; 5013 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 5014 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 5015 if (error != 0) 5016 return (error); 5017 error = nd->nd_repstat; 5018 mbuf_freem(nd->nd_mrep); 5019 return (error); 5020 } 5021 5022 /* 5023 * Do the NFSv4.1 LayoutReturn. 5024 */ 5025 int 5026 nfsrpc_layoutreturn(struct nfsmount *nmp, uint8_t *fh, int fhlen, int reclaim, 5027 int layouttype, uint32_t iomode, int layoutreturn, uint64_t offset, 5028 uint64_t len, nfsv4stateid_t *stateidp, int layoutcnt, uint32_t *layp, 5029 struct ucred *cred, NFSPROC_T *p, void *stuff) 5030 { 5031 uint32_t *tl; 5032 struct nfsrv_descript nfsd, *nd = &nfsd; 5033 int error, outcnt, i; 5034 uint8_t *cp; 5035 5036 nfscl_reqstart(nd, NFSPROC_LAYOUTRETURN, nmp, fh, fhlen, NULL, NULL); 5037 NFSM_BUILD(tl, uint32_t *, 4 * NFSX_UNSIGNED); 5038 if (reclaim != 0) 5039 *tl++ = newnfs_true; 5040 else 5041 *tl++ = newnfs_false; 5042 *tl++ = txdr_unsigned(layouttype); 5043 *tl++ = txdr_unsigned(iomode); 5044 *tl = txdr_unsigned(layoutreturn); 5045 if (layoutreturn == NFSLAYOUTRETURN_FILE) { 5046 NFSM_BUILD(tl, uint32_t *, 2 * NFSX_HYPER + NFSX_STATEID + 5047 NFSX_UNSIGNED); 5048 txdr_hyper(offset, tl); 5049 tl += 2; 5050 txdr_hyper(len, tl); 5051 tl += 2; 5052 NFSCL_DEBUG(4, "layoutret stseq=%d\n", (int)stateidp->seqid); 5053 *tl++ = txdr_unsigned(stateidp->seqid); 5054 *tl++ = stateidp->other[0]; 5055 *tl++ = stateidp->other[1]; 5056 *tl++ = stateidp->other[2]; 5057 *tl = txdr_unsigned(layoutcnt); 5058 if (layoutcnt > 0) { 5059 outcnt = NFSM_RNDUP(layoutcnt); 5060 NFSM_BUILD(cp, uint8_t *, outcnt); 5061 NFSBCOPY(layp, cp, layoutcnt); 5062 cp += layoutcnt; 5063 for (i = 0; i < (outcnt - layoutcnt); i++) 5064 *cp++ = 0x0; 5065 } 5066 } 5067 nd->nd_flag |= ND_USEGSSNAME; 5068 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 5069 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 5070 if (error != 0) 5071 return (error); 5072 if (nd->nd_repstat == 0) { 5073 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 5074 if (*tl != 0) { 5075 NFSM_DISSECT(tl, uint32_t *, NFSX_STATEID); 5076 stateidp->seqid = fxdr_unsigned(uint32_t, *tl++); 5077 stateidp->other[0] = *tl++; 5078 stateidp->other[1] = *tl++; 5079 stateidp->other[2] = *tl; 5080 } 5081 } else 5082 error = nd->nd_repstat; 5083 nfsmout: 5084 mbuf_freem(nd->nd_mrep); 5085 return (error); 5086 } 5087 5088 /* 5089 * Acquire a layout and devinfo, if possible. The caller must have acquired 5090 * a reference count on the nfsclclient structure before calling this. 5091 * Return the layout in lypp with a reference count on it, if successful. 5092 */ 5093 static int 5094 nfsrpc_getlayout(struct nfsmount *nmp, vnode_t vp, struct nfsfh *nfhp, 5095 int iomode, uint32_t *notifybitsp, nfsv4stateid_t *stateidp, uint64_t off, 5096 struct nfscllayout **lypp, struct ucred *cred, NFSPROC_T *p) 5097 { 5098 struct nfscllayout *lyp; 5099 struct nfsclflayout *flp, *tflp; 5100 struct nfscldevinfo *dip; 5101 struct nfsclflayouthead flh; 5102 int error = 0, islocked, layoutlen, recalled, retonclose; 5103 nfsv4stateid_t stateid; 5104 5105 *lypp = NULL; 5106 /* 5107 * If lyp is returned non-NULL, there will be a refcnt (shared lock) 5108 * on it, iff flp != NULL or a lock (exclusive lock) on it iff 5109 * flp == NULL. 5110 */ 5111 lyp = nfscl_getlayout(nmp->nm_clp, nfhp->nfh_fh, nfhp->nfh_len, 5112 off, &flp, &recalled); 5113 islocked = 0; 5114 if (lyp == NULL || flp == NULL) { 5115 if (recalled != 0) 5116 return (EIO); 5117 LIST_INIT(&flh); 5118 layoutlen = NFSMNT_MDSSESSION(nmp)->nfsess_maxcache - 5119 (NFSX_STATEID + 3 * NFSX_UNSIGNED); 5120 if (lyp == NULL) { 5121 stateid.seqid = 0; 5122 stateid.other[0] = stateidp->other[0]; 5123 stateid.other[1] = stateidp->other[1]; 5124 stateid.other[2] = stateidp->other[2]; 5125 error = nfsrpc_layoutget(nmp, nfhp->nfh_fh, 5126 nfhp->nfh_len, iomode, (uint64_t)0, INT64_MAX, 5127 (uint64_t)0, layoutlen, &stateid, &retonclose, 5128 &flh, cred, p, NULL); 5129 } else { 5130 islocked = 1; 5131 stateid.seqid = lyp->nfsly_stateid.seqid; 5132 stateid.other[0] = lyp->nfsly_stateid.other[0]; 5133 stateid.other[1] = lyp->nfsly_stateid.other[1]; 5134 stateid.other[2] = lyp->nfsly_stateid.other[2]; 5135 error = nfsrpc_layoutget(nmp, nfhp->nfh_fh, 5136 nfhp->nfh_len, iomode, off, INT64_MAX, 5137 (uint64_t)0, layoutlen, &stateid, &retonclose, 5138 &flh, cred, p, NULL); 5139 } 5140 if (error == 0) 5141 LIST_FOREACH(tflp, &flh, nfsfl_list) { 5142 error = nfscl_adddevinfo(nmp, NULL, tflp); 5143 if (error != 0) { 5144 error = nfsrpc_getdeviceinfo(nmp, 5145 tflp->nfsfl_dev, 5146 NFSLAYOUT_NFSV4_1_FILES, 5147 notifybitsp, &dip, cred, p); 5148 if (error != 0) 5149 break; 5150 error = nfscl_adddevinfo(nmp, dip, 5151 tflp); 5152 if (error != 0) 5153 printf( 5154 "getlayout: cannot add\n"); 5155 } 5156 } 5157 if (error == 0) { 5158 /* 5159 * nfscl_layout() always returns with the nfsly_lock 5160 * set to a refcnt (shared lock). 5161 */ 5162 error = nfscl_layout(nmp, vp, nfhp->nfh_fh, 5163 nfhp->nfh_len, &stateid, retonclose, &flh, &lyp, 5164 cred, p); 5165 if (error == 0) 5166 *lypp = lyp; 5167 } else if (islocked != 0) 5168 nfsv4_unlock(&lyp->nfsly_lock, 0); 5169 } else 5170 *lypp = lyp; 5171 return (error); 5172 } 5173 5174 /* 5175 * Do a TCP connection plus exchange id and create session. 5176 * If successful, a "struct nfsclds" is linked into the list for the 5177 * mount point and a pointer to it is returned. 5178 */ 5179 static int 5180 nfsrpc_fillsa(struct nfsmount *nmp, struct sockaddr_storage *ssp, 5181 struct nfsclds **dspp, NFSPROC_T *p) 5182 { 5183 struct sockaddr_in *msad, *sad, *ssd; 5184 struct sockaddr_in6 *msad6, *sad6, *ssd6; 5185 struct nfsclclient *clp; 5186 struct nfssockreq *nrp; 5187 struct nfsclds *dsp, *tdsp; 5188 int error; 5189 enum nfsclds_state retv; 5190 uint32_t sequenceid; 5191 5192 KASSERT(nmp->nm_sockreq.nr_cred != NULL, 5193 ("nfsrpc_fillsa: NULL nr_cred")); 5194 NFSLOCKCLSTATE(); 5195 clp = nmp->nm_clp; 5196 NFSUNLOCKCLSTATE(); 5197 if (clp == NULL) 5198 return (EPERM); 5199 if (ssp->ss_family == AF_INET) { 5200 ssd = (struct sockaddr_in *)ssp; 5201 NFSLOCKMNT(nmp); 5202 5203 /* 5204 * Check to see if we already have a session for this 5205 * address that is usable for a DS. 5206 * Note that the MDS's address is in a different place 5207 * than the sessions already acquired for DS's. 5208 */ 5209 msad = (struct sockaddr_in *)nmp->nm_sockreq.nr_nam; 5210 tdsp = TAILQ_FIRST(&nmp->nm_sess); 5211 while (tdsp != NULL) { 5212 if (msad != NULL && msad->sin_family == AF_INET && 5213 ssd->sin_addr.s_addr == msad->sin_addr.s_addr && 5214 ssd->sin_port == msad->sin_port && 5215 (tdsp->nfsclds_flags & NFSCLDS_DS) != 0) { 5216 *dspp = tdsp; 5217 NFSUNLOCKMNT(nmp); 5218 NFSCL_DEBUG(4, "fnd same addr\n"); 5219 return (0); 5220 } 5221 tdsp = TAILQ_NEXT(tdsp, nfsclds_list); 5222 if (tdsp != NULL && tdsp->nfsclds_sockp != NULL) 5223 msad = (struct sockaddr_in *) 5224 tdsp->nfsclds_sockp->nr_nam; 5225 else 5226 msad = NULL; 5227 } 5228 NFSUNLOCKMNT(nmp); 5229 5230 /* No IP address match, so look for new/trunked one. */ 5231 sad = malloc(sizeof(*sad), M_SONAME, M_WAITOK | M_ZERO); 5232 sad->sin_len = sizeof(*sad); 5233 sad->sin_family = AF_INET; 5234 sad->sin_port = ssd->sin_port; 5235 sad->sin_addr.s_addr = ssd->sin_addr.s_addr; 5236 nrp = malloc(sizeof(*nrp), M_NFSSOCKREQ, M_WAITOK | M_ZERO); 5237 nrp->nr_nam = (struct sockaddr *)sad; 5238 } else if (ssp->ss_family == AF_INET6) { 5239 ssd6 = (struct sockaddr_in6 *)ssp; 5240 NFSLOCKMNT(nmp); 5241 5242 /* 5243 * Check to see if we already have a session for this 5244 * address that is usable for a DS. 5245 * Note that the MDS's address is in a different place 5246 * than the sessions already acquired for DS's. 5247 */ 5248 msad6 = (struct sockaddr_in6 *)nmp->nm_sockreq.nr_nam; 5249 tdsp = TAILQ_FIRST(&nmp->nm_sess); 5250 while (tdsp != NULL) { 5251 if (msad6 != NULL && msad6->sin6_family == AF_INET6 && 5252 IN6_ARE_ADDR_EQUAL(&ssd6->sin6_addr, 5253 &msad6->sin6_addr) && 5254 ssd6->sin6_port == msad6->sin6_port && 5255 (tdsp->nfsclds_flags & NFSCLDS_DS) != 0) { 5256 *dspp = tdsp; 5257 NFSUNLOCKMNT(nmp); 5258 return (0); 5259 } 5260 tdsp = TAILQ_NEXT(tdsp, nfsclds_list); 5261 if (tdsp != NULL && tdsp->nfsclds_sockp != NULL) 5262 msad6 = (struct sockaddr_in6 *) 5263 tdsp->nfsclds_sockp->nr_nam; 5264 else 5265 msad6 = NULL; 5266 } 5267 NFSUNLOCKMNT(nmp); 5268 5269 /* No IP address match, so look for new/trunked one. */ 5270 sad6 = malloc(sizeof(*sad6), M_SONAME, M_WAITOK | M_ZERO); 5271 sad6->sin6_len = sizeof(*sad6); 5272 sad6->sin6_family = AF_INET6; 5273 sad6->sin6_port = ssd6->sin6_port; 5274 NFSBCOPY(&ssd6->sin6_addr, &sad6->sin6_addr, 5275 sizeof(struct in6_addr)); 5276 nrp = malloc(sizeof(*nrp), M_NFSSOCKREQ, M_WAITOK | M_ZERO); 5277 nrp->nr_nam = (struct sockaddr *)sad6; 5278 } else 5279 return (EPERM); 5280 5281 nrp->nr_sotype = SOCK_STREAM; 5282 mtx_init(&nrp->nr_mtx, "nfssock", NULL, MTX_DEF); 5283 nrp->nr_prog = NFS_PROG; 5284 nrp->nr_vers = NFS_VER4; 5285 5286 /* 5287 * Use the credentials that were used for the mount, which are 5288 * in nmp->nm_sockreq.nr_cred for newnfs_connect() etc. 5289 * Ref. counting the credentials with crhold() is probably not 5290 * necessary, since nm_sockreq.nr_cred won't be crfree()'d until 5291 * unmount, but I did it anyhow. 5292 */ 5293 nrp->nr_cred = crhold(nmp->nm_sockreq.nr_cred); 5294 error = newnfs_connect(nmp, nrp, NULL, p, 0); 5295 NFSCL_DEBUG(3, "DS connect=%d\n", error); 5296 5297 /* Now, do the exchangeid and create session. */ 5298 if (error == 0) 5299 error = nfsrpc_exchangeid(nmp, clp, nrp, NFSV4EXCH_USEPNFSDS, 5300 &dsp, nrp->nr_cred, p); 5301 NFSCL_DEBUG(3, "DS exchangeid=%d\n", error); 5302 if (error == 0) { 5303 dsp->nfsclds_sockp = nrp; 5304 NFSLOCKMNT(nmp); 5305 retv = nfscl_getsameserver(nmp, dsp, &tdsp); 5306 NFSCL_DEBUG(3, "getsame ret=%d\n", retv); 5307 if (retv == NFSDSP_USETHISSESSION) { 5308 NFSUNLOCKMNT(nmp); 5309 /* 5310 * If there is already a session for this server, 5311 * use it. 5312 */ 5313 (void)newnfs_disconnect(nrp); 5314 nfscl_freenfsclds(dsp); 5315 *dspp = tdsp; 5316 return (0); 5317 } 5318 if (retv == NFSDSP_SEQTHISSESSION) 5319 sequenceid = tdsp->nfsclds_sess.nfsess_sequenceid; 5320 else 5321 sequenceid = dsp->nfsclds_sess.nfsess_sequenceid; 5322 NFSUNLOCKMNT(nmp); 5323 error = nfsrpc_createsession(nmp, &dsp->nfsclds_sess, 5324 nrp, sequenceid, 0, nrp->nr_cred, p); 5325 NFSCL_DEBUG(3, "DS createsess=%d\n", error); 5326 } else { 5327 NFSFREECRED(nrp->nr_cred); 5328 NFSFREEMUTEX(&nrp->nr_mtx); 5329 free(nrp->nr_nam, M_SONAME); 5330 free(nrp, M_NFSSOCKREQ); 5331 } 5332 if (error == 0) { 5333 NFSCL_DEBUG(3, "add DS session\n"); 5334 /* 5335 * Put it at the end of the list. That way the list 5336 * is ordered by when the entry was added. This matters 5337 * since the one done first is the one that should be 5338 * used for sequencid'ing any subsequent create sessions. 5339 */ 5340 NFSLOCKMNT(nmp); 5341 TAILQ_INSERT_TAIL(&nmp->nm_sess, dsp, nfsclds_list); 5342 NFSUNLOCKMNT(nmp); 5343 *dspp = dsp; 5344 } else if (dsp != NULL) 5345 nfscl_freenfsclds(dsp); 5346 return (error); 5347 } 5348 5349 /* 5350 * Do the NFSv4.1 Reclaim Complete. 5351 */ 5352 int 5353 nfsrpc_reclaimcomplete(struct nfsmount *nmp, struct ucred *cred, NFSPROC_T *p) 5354 { 5355 uint32_t *tl; 5356 struct nfsrv_descript nfsd; 5357 struct nfsrv_descript *nd = &nfsd; 5358 int error; 5359 5360 nfscl_reqstart(nd, NFSPROC_RECLAIMCOMPL, nmp, NULL, 0, NULL, NULL); 5361 NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED); 5362 *tl = newnfs_false; 5363 nd->nd_flag |= ND_USEGSSNAME; 5364 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 5365 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 5366 if (error != 0) 5367 return (error); 5368 error = nd->nd_repstat; 5369 mbuf_freem(nd->nd_mrep); 5370 return (error); 5371 } 5372 5373 /* 5374 * Initialize the slot tables for a session. 5375 */ 5376 static void 5377 nfscl_initsessionslots(struct nfsclsession *sep) 5378 { 5379 int i; 5380 5381 for (i = 0; i < NFSV4_CBSLOTS; i++) { 5382 if (sep->nfsess_cbslots[i].nfssl_reply != NULL) 5383 m_freem(sep->nfsess_cbslots[i].nfssl_reply); 5384 NFSBZERO(&sep->nfsess_cbslots[i], sizeof(struct nfsslot)); 5385 } 5386 for (i = 0; i < 64; i++) 5387 sep->nfsess_slotseq[i] = 0; 5388 sep->nfsess_slots = 0; 5389 } 5390 5391 /* 5392 * Called to try and do an I/O operation via an NFSv4.1 Data Server (DS). 5393 */ 5394 int 5395 nfscl_doiods(vnode_t vp, struct uio *uiop, int *iomode, int *must_commit, 5396 uint32_t rwaccess, struct ucred *cred, NFSPROC_T *p) 5397 { 5398 struct nfsnode *np = VTONFS(vp); 5399 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 5400 struct nfscllayout *layp; 5401 struct nfscldevinfo *dip; 5402 struct nfsclflayout *rflp; 5403 nfsv4stateid_t stateid; 5404 struct ucred *newcred; 5405 uint64_t lastbyte, len, off, oresid, xfer; 5406 int eof, error, iolaymode, recalled; 5407 void *lckp; 5408 5409 if (!NFSHASPNFS(nmp) || nfscl_enablecallb == 0 || nfs_numnfscbd == 0 || 5410 (np->n_flag & NNOLAYOUT) != 0) 5411 return (EIO); 5412 /* Now, get a reference cnt on the clientid for this mount. */ 5413 if (nfscl_getref(nmp) == 0) 5414 return (EIO); 5415 5416 /* Find an appropriate stateid. */ 5417 newcred = NFSNEWCRED(cred); 5418 error = nfscl_getstateid(vp, np->n_fhp->nfh_fh, np->n_fhp->nfh_len, 5419 rwaccess, 1, newcred, p, &stateid, &lckp); 5420 if (error != 0) { 5421 NFSFREECRED(newcred); 5422 nfscl_relref(nmp); 5423 return (error); 5424 } 5425 /* Search for a layout for this file. */ 5426 off = uiop->uio_offset; 5427 layp = nfscl_getlayout(nmp->nm_clp, np->n_fhp->nfh_fh, 5428 np->n_fhp->nfh_len, off, &rflp, &recalled); 5429 if (layp == NULL || rflp == NULL) { 5430 if (recalled != 0) { 5431 NFSFREECRED(newcred); 5432 nfscl_relref(nmp); 5433 return (EIO); 5434 } 5435 if (layp != NULL) { 5436 nfscl_rellayout(layp, (rflp == NULL) ? 1 : 0); 5437 layp = NULL; 5438 } 5439 /* Try and get a Layout, if it is supported. */ 5440 if (rwaccess == NFSV4OPEN_ACCESSWRITE || 5441 (np->n_flag & NWRITEOPENED) != 0) 5442 iolaymode = NFSLAYOUTIOMODE_RW; 5443 else 5444 iolaymode = NFSLAYOUTIOMODE_READ; 5445 error = nfsrpc_getlayout(nmp, vp, np->n_fhp, iolaymode, 5446 NULL, &stateid, off, &layp, newcred, p); 5447 if (error != 0) { 5448 NFSLOCKNODE(np); 5449 np->n_flag |= NNOLAYOUT; 5450 NFSUNLOCKNODE(np); 5451 if (lckp != NULL) 5452 nfscl_lockderef(lckp); 5453 NFSFREECRED(newcred); 5454 if (layp != NULL) 5455 nfscl_rellayout(layp, 0); 5456 nfscl_relref(nmp); 5457 return (error); 5458 } 5459 } 5460 5461 /* 5462 * Loop around finding a layout that works for the first part of 5463 * this I/O operation, and then call the function that actually 5464 * does the RPC. 5465 */ 5466 eof = 0; 5467 len = (uint64_t)uiop->uio_resid; 5468 while (len > 0 && error == 0 && eof == 0) { 5469 off = uiop->uio_offset; 5470 error = nfscl_findlayoutforio(layp, off, rwaccess, &rflp); 5471 if (error == 0) { 5472 oresid = xfer = (uint64_t)uiop->uio_resid; 5473 if (xfer > (rflp->nfsfl_end - rflp->nfsfl_off)) 5474 xfer = rflp->nfsfl_end - rflp->nfsfl_off; 5475 dip = nfscl_getdevinfo(nmp->nm_clp, rflp->nfsfl_dev, 5476 rflp->nfsfl_devp); 5477 if (dip != NULL) { 5478 error = nfscl_doflayoutio(vp, uiop, iomode, 5479 must_commit, &eof, &stateid, rwaccess, dip, 5480 layp, rflp, off, xfer, newcred, p); 5481 nfscl_reldevinfo(dip); 5482 lastbyte = off + xfer - 1; 5483 if (error == 0) { 5484 NFSLOCKCLSTATE(); 5485 if (lastbyte > layp->nfsly_lastbyte) 5486 layp->nfsly_lastbyte = lastbyte; 5487 NFSUNLOCKCLSTATE(); 5488 } 5489 } else 5490 error = EIO; 5491 if (error == 0) 5492 len -= (oresid - (uint64_t)uiop->uio_resid); 5493 } 5494 } 5495 if (lckp != NULL) 5496 nfscl_lockderef(lckp); 5497 NFSFREECRED(newcred); 5498 nfscl_rellayout(layp, 0); 5499 nfscl_relref(nmp); 5500 return (error); 5501 } 5502 5503 /* 5504 * Find a file layout that will handle the first bytes of the requested 5505 * range and return the information from it needed to to the I/O operation. 5506 */ 5507 int 5508 nfscl_findlayoutforio(struct nfscllayout *lyp, uint64_t off, uint32_t rwaccess, 5509 struct nfsclflayout **retflpp) 5510 { 5511 struct nfsclflayout *flp, *nflp, *rflp; 5512 uint32_t rw; 5513 5514 rflp = NULL; 5515 rw = rwaccess; 5516 /* For reading, do the Read list first and then the Write list. */ 5517 do { 5518 if (rw == NFSV4OPEN_ACCESSREAD) 5519 flp = LIST_FIRST(&lyp->nfsly_flayread); 5520 else 5521 flp = LIST_FIRST(&lyp->nfsly_flayrw); 5522 while (flp != NULL) { 5523 nflp = LIST_NEXT(flp, nfsfl_list); 5524 if (flp->nfsfl_off > off) 5525 break; 5526 if (flp->nfsfl_end > off && 5527 (rflp == NULL || rflp->nfsfl_end < flp->nfsfl_end)) 5528 rflp = flp; 5529 flp = nflp; 5530 } 5531 if (rw == NFSV4OPEN_ACCESSREAD) 5532 rw = NFSV4OPEN_ACCESSWRITE; 5533 else 5534 rw = 0; 5535 } while (rw != 0); 5536 if (rflp != NULL) { 5537 /* This one covers the most bytes starting at off. */ 5538 *retflpp = rflp; 5539 return (0); 5540 } 5541 return (EIO); 5542 } 5543 5544 /* 5545 * Do I/O using an NFSv4.1 file layout. 5546 */ 5547 static int 5548 nfscl_doflayoutio(vnode_t vp, struct uio *uiop, int *iomode, int *must_commit, 5549 int *eofp, nfsv4stateid_t *stateidp, int rwflag, struct nfscldevinfo *dp, 5550 struct nfscllayout *lyp, struct nfsclflayout *flp, uint64_t off, 5551 uint64_t len, struct ucred *cred, NFSPROC_T *p) 5552 { 5553 uint64_t io_off, rel_off, stripe_unit_size, transfer, xfer; 5554 int commit_thru_mds, error = 0, stripe_index, stripe_pos; 5555 struct nfsnode *np; 5556 struct nfsfh *fhp; 5557 struct nfsclds **dspp; 5558 5559 np = VTONFS(vp); 5560 rel_off = off - flp->nfsfl_patoff; 5561 stripe_unit_size = (flp->nfsfl_util >> 6) & 0x3ffffff; 5562 stripe_pos = (rel_off / stripe_unit_size + flp->nfsfl_stripe1) % 5563 dp->nfsdi_stripecnt; 5564 transfer = stripe_unit_size - (rel_off % stripe_unit_size); 5565 5566 /* Loop around, doing I/O for each stripe unit. */ 5567 while (len > 0 && error == 0) { 5568 stripe_index = nfsfldi_stripeindex(dp, stripe_pos); 5569 dspp = nfsfldi_addr(dp, stripe_index); 5570 if (len > transfer) 5571 xfer = transfer; 5572 else 5573 xfer = len; 5574 if ((flp->nfsfl_util & NFSFLAYUTIL_DENSE) != 0) { 5575 /* Dense layout. */ 5576 if (stripe_pos >= flp->nfsfl_fhcnt) 5577 return (EIO); 5578 fhp = flp->nfsfl_fh[stripe_pos]; 5579 io_off = (rel_off / (stripe_unit_size * 5580 dp->nfsdi_stripecnt)) * stripe_unit_size + 5581 rel_off % stripe_unit_size; 5582 } else { 5583 /* Sparse layout. */ 5584 if (flp->nfsfl_fhcnt > 1) { 5585 if (stripe_index >= flp->nfsfl_fhcnt) 5586 return (EIO); 5587 fhp = flp->nfsfl_fh[stripe_index]; 5588 } else if (flp->nfsfl_fhcnt == 1) 5589 fhp = flp->nfsfl_fh[0]; 5590 else 5591 fhp = np->n_fhp; 5592 io_off = off; 5593 } 5594 if ((flp->nfsfl_util & NFSFLAYUTIL_COMMIT_THRU_MDS) != 0) 5595 commit_thru_mds = 1; 5596 else 5597 commit_thru_mds = 0; 5598 if (rwflag == FREAD) 5599 error = nfsrpc_readds(vp, uiop, stateidp, eofp, *dspp, 5600 io_off, xfer, fhp, cred, p); 5601 else { 5602 error = nfsrpc_writeds(vp, uiop, iomode, must_commit, 5603 stateidp, *dspp, io_off, xfer, fhp, commit_thru_mds, 5604 cred, p); 5605 if (error == 0) { 5606 NFSLOCKCLSTATE(); 5607 lyp->nfsly_flags |= NFSLY_WRITTEN; 5608 NFSUNLOCKCLSTATE(); 5609 } 5610 } 5611 if (error == 0) { 5612 transfer = stripe_unit_size; 5613 stripe_pos = (stripe_pos + 1) % dp->nfsdi_stripecnt; 5614 len -= xfer; 5615 off += xfer; 5616 } 5617 } 5618 return (error); 5619 } 5620 5621 /* 5622 * The actual read RPC done to a DS. 5623 */ 5624 static int 5625 nfsrpc_readds(vnode_t vp, struct uio *uiop, nfsv4stateid_t *stateidp, int *eofp, 5626 struct nfsclds *dsp, uint64_t io_off, int len, struct nfsfh *fhp, 5627 struct ucred *cred, NFSPROC_T *p) 5628 { 5629 uint32_t *tl; 5630 int error, retlen; 5631 struct nfsrv_descript nfsd; 5632 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 5633 struct nfsrv_descript *nd = &nfsd; 5634 struct nfssockreq *nrp; 5635 5636 nd->nd_mrep = NULL; 5637 nfscl_reqstart(nd, NFSPROC_READDS, nmp, fhp->nfh_fh, fhp->nfh_len, 5638 NULL, &dsp->nfsclds_sess); 5639 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSEQIDZERO); 5640 NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED * 3); 5641 txdr_hyper(io_off, tl); 5642 *(tl + 2) = txdr_unsigned(len); 5643 nrp = dsp->nfsclds_sockp; 5644 if (nrp == NULL) 5645 /* If NULL, use the MDS socket. */ 5646 nrp = &nmp->nm_sockreq; 5647 error = newnfs_request(nd, nmp, NULL, nrp, vp, p, cred, 5648 NFS_PROG, NFS_VER4, NULL, 1, NULL, &dsp->nfsclds_sess); 5649 if (error != 0) 5650 return (error); 5651 if (nd->nd_repstat != 0) { 5652 error = nd->nd_repstat; 5653 goto nfsmout; 5654 } 5655 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 5656 *eofp = fxdr_unsigned(int, *tl); 5657 NFSM_STRSIZ(retlen, len); 5658 error = nfsm_mbufuio(nd, uiop, retlen); 5659 nfsmout: 5660 if (nd->nd_mrep != NULL) 5661 mbuf_freem(nd->nd_mrep); 5662 return (error); 5663 } 5664 5665 /* 5666 * The actual write RPC done to a DS. 5667 */ 5668 static int 5669 nfsrpc_writeds(vnode_t vp, struct uio *uiop, int *iomode, int *must_commit, 5670 nfsv4stateid_t *stateidp, struct nfsclds *dsp, uint64_t io_off, int len, 5671 struct nfsfh *fhp, int commit_thru_mds, struct ucred *cred, NFSPROC_T *p) 5672 { 5673 uint32_t *tl; 5674 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 5675 int error, rlen, commit, committed = NFSWRITE_FILESYNC; 5676 int32_t backup; 5677 struct nfsrv_descript nfsd; 5678 struct nfsrv_descript *nd = &nfsd; 5679 struct nfssockreq *nrp; 5680 5681 KASSERT(uiop->uio_iovcnt == 1, ("nfs: writerpc iovcnt > 1")); 5682 nd->nd_mrep = NULL; 5683 nfscl_reqstart(nd, NFSPROC_WRITEDS, nmp, fhp->nfh_fh, fhp->nfh_len, 5684 NULL, &dsp->nfsclds_sess); 5685 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSEQIDZERO); 5686 NFSM_BUILD(tl, uint32_t *, NFSX_HYPER + 2 * NFSX_UNSIGNED); 5687 txdr_hyper(io_off, tl); 5688 tl += 2; 5689 *tl++ = txdr_unsigned(*iomode); 5690 *tl = txdr_unsigned(len); 5691 nfsm_uiombuf(nd, uiop, len); 5692 nrp = dsp->nfsclds_sockp; 5693 if (nrp == NULL) 5694 /* If NULL, use the MDS socket. */ 5695 nrp = &nmp->nm_sockreq; 5696 error = newnfs_request(nd, nmp, NULL, nrp, vp, p, cred, 5697 NFS_PROG, NFS_VER4, NULL, 1, NULL, &dsp->nfsclds_sess); 5698 if (error != 0) 5699 return (error); 5700 if (nd->nd_repstat != 0) { 5701 /* 5702 * In case the rpc gets retried, roll 5703 * the uio fileds changed by nfsm_uiombuf() 5704 * back. 5705 */ 5706 uiop->uio_offset -= len; 5707 uio_uio_resid_add(uiop, len); 5708 uio_iov_base_add(uiop, -len); 5709 uio_iov_len_add(uiop, len); 5710 error = nd->nd_repstat; 5711 } else { 5712 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED + NFSX_VERF); 5713 rlen = fxdr_unsigned(int, *tl++); 5714 if (rlen == 0) { 5715 error = NFSERR_IO; 5716 goto nfsmout; 5717 } else if (rlen < len) { 5718 backup = len - rlen; 5719 uio_iov_base_add(uiop, -(backup)); 5720 uio_iov_len_add(uiop, backup); 5721 uiop->uio_offset -= backup; 5722 uio_uio_resid_add(uiop, backup); 5723 len = rlen; 5724 } 5725 commit = fxdr_unsigned(int, *tl++); 5726 5727 /* 5728 * Return the lowest committment level 5729 * obtained by any of the RPCs. 5730 */ 5731 if (committed == NFSWRITE_FILESYNC) 5732 committed = commit; 5733 else if (committed == NFSWRITE_DATASYNC && 5734 commit == NFSWRITE_UNSTABLE) 5735 committed = commit; 5736 if (commit_thru_mds != 0) { 5737 NFSLOCKMNT(nmp); 5738 if (!NFSHASWRITEVERF(nmp)) { 5739 NFSBCOPY(tl, nmp->nm_verf, NFSX_VERF); 5740 NFSSETWRITEVERF(nmp); 5741 } else if (NFSBCMP(tl, nmp->nm_verf, NFSX_VERF)) { 5742 *must_commit = 1; 5743 NFSBCOPY(tl, nmp->nm_verf, NFSX_VERF); 5744 } 5745 NFSUNLOCKMNT(nmp); 5746 } else { 5747 NFSLOCKDS(dsp); 5748 if ((dsp->nfsclds_flags & NFSCLDS_HASWRITEVERF) == 0) { 5749 NFSBCOPY(tl, dsp->nfsclds_verf, NFSX_VERF); 5750 dsp->nfsclds_flags |= NFSCLDS_HASWRITEVERF; 5751 } else if (NFSBCMP(tl, dsp->nfsclds_verf, NFSX_VERF)) { 5752 *must_commit = 1; 5753 NFSBCOPY(tl, dsp->nfsclds_verf, NFSX_VERF); 5754 } 5755 NFSUNLOCKDS(dsp); 5756 } 5757 } 5758 nfsmout: 5759 if (nd->nd_mrep != NULL) 5760 mbuf_freem(nd->nd_mrep); 5761 *iomode = committed; 5762 if (nd->nd_repstat != 0 && error == 0) 5763 error = nd->nd_repstat; 5764 return (error); 5765 } 5766 5767 /* 5768 * Free up the nfsclds structure. 5769 */ 5770 void 5771 nfscl_freenfsclds(struct nfsclds *dsp) 5772 { 5773 int i; 5774 5775 if (dsp == NULL) 5776 return; 5777 if (dsp->nfsclds_sockp != NULL) { 5778 NFSFREECRED(dsp->nfsclds_sockp->nr_cred); 5779 NFSFREEMUTEX(&dsp->nfsclds_sockp->nr_mtx); 5780 free(dsp->nfsclds_sockp->nr_nam, M_SONAME); 5781 free(dsp->nfsclds_sockp, M_NFSSOCKREQ); 5782 } 5783 NFSFREEMUTEX(&dsp->nfsclds_mtx); 5784 NFSFREEMUTEX(&dsp->nfsclds_sess.nfsess_mtx); 5785 for (i = 0; i < NFSV4_CBSLOTS; i++) { 5786 if (dsp->nfsclds_sess.nfsess_cbslots[i].nfssl_reply != NULL) 5787 m_freem( 5788 dsp->nfsclds_sess.nfsess_cbslots[i].nfssl_reply); 5789 } 5790 free(dsp, M_NFSCLDS); 5791 } 5792 5793 static enum nfsclds_state 5794 nfscl_getsameserver(struct nfsmount *nmp, struct nfsclds *newdsp, 5795 struct nfsclds **retdspp) 5796 { 5797 struct nfsclds *dsp, *cur_dsp; 5798 5799 /* 5800 * Search the list of nfsclds structures for one with the same 5801 * server. 5802 */ 5803 cur_dsp = NULL; 5804 TAILQ_FOREACH(dsp, &nmp->nm_sess, nfsclds_list) { 5805 if (dsp->nfsclds_servownlen == newdsp->nfsclds_servownlen && 5806 dsp->nfsclds_servownlen != 0 && 5807 !NFSBCMP(dsp->nfsclds_serverown, newdsp->nfsclds_serverown, 5808 dsp->nfsclds_servownlen)) { 5809 NFSCL_DEBUG(4, "fnd same fdsp=%p dsp=%p flg=0x%x\n", 5810 TAILQ_FIRST(&nmp->nm_sess), dsp, 5811 dsp->nfsclds_flags); 5812 /* Server major id matches. */ 5813 if ((dsp->nfsclds_flags & NFSCLDS_DS) != 0) { 5814 *retdspp = dsp; 5815 return (NFSDSP_USETHISSESSION); 5816 } 5817 5818 /* 5819 * Note the first match, so it can be used for 5820 * sequence'ing new sessions. 5821 */ 5822 if (cur_dsp == NULL) 5823 cur_dsp = dsp; 5824 } 5825 } 5826 if (cur_dsp != NULL) { 5827 *retdspp = cur_dsp; 5828 return (NFSDSP_SEQTHISSESSION); 5829 } 5830 return (NFSDSP_NOTFOUND); 5831 } 5832 5833 #ifdef notyet 5834 /* 5835 * NFS commit rpc to a DS. 5836 */ 5837 static int 5838 nfsrpc_commitds(vnode_t vp, uint64_t offset, int cnt, struct nfsclds *dsp, 5839 struct nfsfh *fhp, struct ucred *cred, NFSPROC_T *p, void *stuff) 5840 { 5841 uint32_t *tl; 5842 struct nfsrv_descript nfsd, *nd = &nfsd; 5843 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 5844 struct nfssockreq *nrp; 5845 int error; 5846 5847 nfscl_reqstart(nd, NFSPROC_COMMITDS, nmp, fhp->nfh_fh, fhp->nfh_len, 5848 NULL, &dsp->nfsclds_sess); 5849 NFSM_BUILD(tl, uint32_t *, NFSX_HYPER + NFSX_UNSIGNED); 5850 txdr_hyper(offset, tl); 5851 tl += 2; 5852 *tl = txdr_unsigned(cnt); 5853 nrp = dsp->nfsclds_sockp; 5854 if (nrp == NULL) 5855 /* If NULL, use the MDS socket. */ 5856 nrp = &nmp->nm_sockreq; 5857 error = newnfs_request(nd, nmp, NULL, nrp, vp, p, cred, 5858 NFS_PROG, NFS_VER4, NULL, 1, NULL, &dsp->nfsclds_sess); 5859 if (error) 5860 return (error); 5861 if (nd->nd_repstat == 0) { 5862 NFSM_DISSECT(tl, u_int32_t *, NFSX_VERF); 5863 NFSLOCKDS(dsp); 5864 if (NFSBCMP(tl, dsp->nfsclds_verf, NFSX_VERF)) { 5865 NFSBCOPY(tl, dsp->nfsclds_verf, NFSX_VERF); 5866 error = NFSERR_STALEWRITEVERF; 5867 } 5868 NFSUNLOCKDS(dsp); 5869 } 5870 nfsmout: 5871 if (error == 0 && nd->nd_repstat != 0) 5872 error = nd->nd_repstat; 5873 mbuf_freem(nd->nd_mrep); 5874 return (error); 5875 } 5876 #endif 5877 5878