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 * 3. 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 #include <sys/sysctl.h> 50 51 SYSCTL_DECL(_vfs_nfs); 52 53 static int nfsignore_eexist = 0; 54 SYSCTL_INT(_vfs_nfs, OID_AUTO, ignore_eexist, CTLFLAG_RW, 55 &nfsignore_eexist, 0, "NFS ignore EEXIST replies for mkdir/symlink"); 56 57 /* 58 * Global variables 59 */ 60 extern int nfs_numnfscbd; 61 extern struct timeval nfsboottime; 62 extern u_int32_t newnfs_false, newnfs_true; 63 extern nfstype nfsv34_type[9]; 64 extern int nfsrv_useacl; 65 extern char nfsv4_callbackaddr[INET6_ADDRSTRLEN]; 66 extern int nfscl_debuglevel; 67 NFSCLSTATEMUTEX; 68 int nfstest_outofseq = 0; 69 int nfscl_assumeposixlocks = 1; 70 int nfscl_enablecallb = 0; 71 short nfsv4_cbport = NFSV4_CBPORT; 72 int nfstest_openallsetattr = 0; 73 #endif /* !APPLEKEXT */ 74 75 #define DIRHDSIZ offsetof(struct dirent, d_name) 76 77 /* 78 * nfscl_getsameserver() can return one of three values: 79 * NFSDSP_USETHISSESSION - Use this session for the DS. 80 * NFSDSP_SEQTHISSESSION - Use the nfsclds_sequence field of this dsp for new 81 * session. 82 * NFSDSP_NOTFOUND - No matching server was found. 83 */ 84 enum nfsclds_state { 85 NFSDSP_USETHISSESSION = 0, 86 NFSDSP_SEQTHISSESSION = 1, 87 NFSDSP_NOTFOUND = 2, 88 }; 89 90 static int nfsrpc_setattrrpc(vnode_t , struct vattr *, nfsv4stateid_t *, 91 struct ucred *, NFSPROC_T *, struct nfsvattr *, int *, void *); 92 static int nfsrpc_readrpc(vnode_t , struct uio *, struct ucred *, 93 nfsv4stateid_t *, NFSPROC_T *, struct nfsvattr *, int *, void *); 94 static int nfsrpc_writerpc(vnode_t , struct uio *, int *, int *, 95 struct ucred *, nfsv4stateid_t *, NFSPROC_T *, struct nfsvattr *, int *, 96 void *); 97 static int nfsrpc_createv23(vnode_t , char *, int, struct vattr *, 98 nfsquad_t, int, struct ucred *, NFSPROC_T *, struct nfsvattr *, 99 struct nfsvattr *, struct nfsfh **, int *, int *, void *); 100 static int nfsrpc_createv4(vnode_t , char *, int, struct vattr *, 101 nfsquad_t, int, struct nfsclowner *, struct nfscldeleg **, struct ucred *, 102 NFSPROC_T *, struct nfsvattr *, struct nfsvattr *, struct nfsfh **, int *, 103 int *, void *, int *); 104 static int nfsrpc_locku(struct nfsrv_descript *, struct nfsmount *, 105 struct nfscllockowner *, u_int64_t, u_int64_t, 106 u_int32_t, struct ucred *, NFSPROC_T *, int); 107 static int nfsrpc_setaclrpc(vnode_t, struct ucred *, NFSPROC_T *, 108 struct acl *, nfsv4stateid_t *, void *); 109 static int nfsrpc_getlayout(struct nfsmount *, vnode_t, struct nfsfh *, int, 110 uint32_t *, nfsv4stateid_t *, uint64_t, struct nfscllayout **, 111 struct ucred *, NFSPROC_T *); 112 static int nfsrpc_fillsa(struct nfsmount *, struct sockaddr_storage *, 113 struct nfsclds **, NFSPROC_T *); 114 static void nfscl_initsessionslots(struct nfsclsession *); 115 static int nfscl_doflayoutio(vnode_t, struct uio *, int *, int *, int *, 116 nfsv4stateid_t *, int, struct nfscldevinfo *, struct nfscllayout *, 117 struct nfsclflayout *, uint64_t, uint64_t, struct ucred *, NFSPROC_T *); 118 static int nfsrpc_readds(vnode_t, struct uio *, nfsv4stateid_t *, int *, 119 struct nfsclds *, uint64_t, int, struct nfsfh *, struct ucred *, 120 NFSPROC_T *); 121 static int nfsrpc_writeds(vnode_t, struct uio *, int *, int *, 122 nfsv4stateid_t *, struct nfsclds *, uint64_t, int, 123 struct nfsfh *, int, struct ucred *, NFSPROC_T *); 124 static enum nfsclds_state nfscl_getsameserver(struct nfsmount *, 125 struct nfsclds *, struct nfsclds **); 126 #ifdef notyet 127 static int nfsrpc_commitds(vnode_t, uint64_t, int, struct nfsclds *, 128 struct nfsfh *, struct ucred *, NFSPROC_T *, void *); 129 #endif 130 131 /* 132 * nfs null call from vfs. 133 */ 134 APPLESTATIC int 135 nfsrpc_null(vnode_t vp, struct ucred *cred, NFSPROC_T *p) 136 { 137 int error; 138 struct nfsrv_descript nfsd, *nd = &nfsd; 139 140 NFSCL_REQSTART(nd, NFSPROC_NULL, vp); 141 error = nfscl_request(nd, vp, p, cred, NULL); 142 if (nd->nd_repstat && !error) 143 error = nd->nd_repstat; 144 mbuf_freem(nd->nd_mrep); 145 return (error); 146 } 147 148 /* 149 * nfs access rpc op. 150 * For nfs version 3 and 4, use the access rpc to check accessibility. If file 151 * modes are changed on the server, accesses might still fail later. 152 */ 153 APPLESTATIC int 154 nfsrpc_access(vnode_t vp, int acmode, struct ucred *cred, 155 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp) 156 { 157 int error; 158 u_int32_t mode, rmode; 159 160 if (acmode & VREAD) 161 mode = NFSACCESS_READ; 162 else 163 mode = 0; 164 if (vnode_vtype(vp) == VDIR) { 165 if (acmode & VWRITE) 166 mode |= (NFSACCESS_MODIFY | NFSACCESS_EXTEND | 167 NFSACCESS_DELETE); 168 if (acmode & VEXEC) 169 mode |= NFSACCESS_LOOKUP; 170 } else { 171 if (acmode & VWRITE) 172 mode |= (NFSACCESS_MODIFY | NFSACCESS_EXTEND); 173 if (acmode & VEXEC) 174 mode |= NFSACCESS_EXECUTE; 175 } 176 177 /* 178 * Now, just call nfsrpc_accessrpc() to do the actual RPC. 179 */ 180 error = nfsrpc_accessrpc(vp, mode, cred, p, nap, attrflagp, &rmode, 181 NULL); 182 183 /* 184 * The NFS V3 spec does not clarify whether or not 185 * the returned access bits can be a superset of 186 * the ones requested, so... 187 */ 188 if (!error && (rmode & mode) != mode) 189 error = EACCES; 190 return (error); 191 } 192 193 /* 194 * The actual rpc, separated out for Darwin. 195 */ 196 APPLESTATIC int 197 nfsrpc_accessrpc(vnode_t vp, u_int32_t mode, struct ucred *cred, 198 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, u_int32_t *rmodep, 199 void *stuff) 200 { 201 u_int32_t *tl; 202 u_int32_t supported, rmode; 203 int error; 204 struct nfsrv_descript nfsd, *nd = &nfsd; 205 nfsattrbit_t attrbits; 206 207 *attrflagp = 0; 208 supported = mode; 209 NFSCL_REQSTART(nd, NFSPROC_ACCESS, vp); 210 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 211 *tl = txdr_unsigned(mode); 212 if (nd->nd_flag & ND_NFSV4) { 213 /* 214 * And do a Getattr op. 215 */ 216 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 217 *tl = txdr_unsigned(NFSV4OP_GETATTR); 218 NFSGETATTR_ATTRBIT(&attrbits); 219 (void) nfsrv_putattrbit(nd, &attrbits); 220 } 221 error = nfscl_request(nd, vp, p, cred, stuff); 222 if (error) 223 return (error); 224 if (nd->nd_flag & ND_NFSV3) { 225 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 226 if (error) 227 goto nfsmout; 228 } 229 if (!nd->nd_repstat) { 230 if (nd->nd_flag & ND_NFSV4) { 231 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 232 supported = fxdr_unsigned(u_int32_t, *tl++); 233 } else { 234 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 235 } 236 rmode = fxdr_unsigned(u_int32_t, *tl); 237 if (nd->nd_flag & ND_NFSV4) 238 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 239 240 /* 241 * It's not obvious what should be done about 242 * unsupported access modes. For now, be paranoid 243 * and clear the unsupported ones. 244 */ 245 rmode &= supported; 246 *rmodep = rmode; 247 } else 248 error = nd->nd_repstat; 249 nfsmout: 250 mbuf_freem(nd->nd_mrep); 251 return (error); 252 } 253 254 /* 255 * nfs open rpc 256 */ 257 APPLESTATIC int 258 nfsrpc_open(vnode_t vp, int amode, struct ucred *cred, NFSPROC_T *p) 259 { 260 struct nfsclopen *op; 261 struct nfscldeleg *dp; 262 struct nfsfh *nfhp; 263 struct nfsnode *np = VTONFS(vp); 264 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 265 u_int32_t mode, clidrev; 266 int ret, newone, error, expireret = 0, retrycnt; 267 268 /* 269 * For NFSv4, Open Ops are only done on Regular Files. 270 */ 271 if (vnode_vtype(vp) != VREG) 272 return (0); 273 mode = 0; 274 if (amode & FREAD) 275 mode |= NFSV4OPEN_ACCESSREAD; 276 if (amode & FWRITE) 277 mode |= NFSV4OPEN_ACCESSWRITE; 278 nfhp = np->n_fhp; 279 280 retrycnt = 0; 281 #ifdef notdef 282 { char name[100]; int namel; 283 namel = (np->n_v4->n4_namelen < 100) ? np->n_v4->n4_namelen : 99; 284 bcopy(NFS4NODENAME(np->n_v4), name, namel); 285 name[namel] = '\0'; 286 printf("rpcopen p=0x%x name=%s",p->p_pid,name); 287 if (nfhp->nfh_len > 0) printf(" fh=0x%x\n",nfhp->nfh_fh[12]); 288 else printf(" fhl=0\n"); 289 } 290 #endif 291 do { 292 dp = NULL; 293 error = nfscl_open(vp, nfhp->nfh_fh, nfhp->nfh_len, mode, 1, 294 cred, p, NULL, &op, &newone, &ret, 1); 295 if (error) { 296 return (error); 297 } 298 if (nmp->nm_clp != NULL) 299 clidrev = nmp->nm_clp->nfsc_clientidrev; 300 else 301 clidrev = 0; 302 if (ret == NFSCLOPEN_DOOPEN) { 303 if (np->n_v4 != NULL) { 304 error = nfsrpc_openrpc(nmp, vp, np->n_v4->n4_data, 305 np->n_v4->n4_fhlen, np->n_fhp->nfh_fh, 306 np->n_fhp->nfh_len, mode, op, 307 NFS4NODENAME(np->n_v4), np->n_v4->n4_namelen, &dp, 308 0, 0x0, cred, p, 0, 0); 309 if (dp != NULL) { 310 #ifdef APPLE 311 OSBitAndAtomic((int32_t)~NDELEGMOD, (UInt32 *)&np->n_flag); 312 #else 313 NFSLOCKNODE(np); 314 np->n_flag &= ~NDELEGMOD; 315 /* 316 * Invalidate the attribute cache, so that 317 * attributes that pre-date the issue of a 318 * delegation are not cached, since the 319 * cached attributes will remain valid while 320 * the delegation is held. 321 */ 322 NFSINVALATTRCACHE(np); 323 NFSUNLOCKNODE(np); 324 #endif 325 (void) nfscl_deleg(nmp->nm_mountp, 326 op->nfso_own->nfsow_clp, 327 nfhp->nfh_fh, nfhp->nfh_len, cred, p, &dp); 328 } 329 } else { 330 error = EIO; 331 } 332 newnfs_copyincred(cred, &op->nfso_cred); 333 } else if (ret == NFSCLOPEN_SETCRED) 334 /* 335 * This is a new local open on a delegation. It needs 336 * to have credentials so that an open can be done 337 * against the server during recovery. 338 */ 339 newnfs_copyincred(cred, &op->nfso_cred); 340 341 /* 342 * nfso_opencnt is the count of how many VOP_OPEN()s have 343 * been done on this Open successfully and a VOP_CLOSE() 344 * is expected for each of these. 345 * If error is non-zero, don't increment it, since the Open 346 * hasn't succeeded yet. 347 */ 348 if (!error) 349 op->nfso_opencnt++; 350 nfscl_openrelease(nmp, op, error, newone); 351 if (error == NFSERR_GRACE || error == NFSERR_STALECLIENTID || 352 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 353 error == NFSERR_BADSESSION) { 354 (void) nfs_catnap(PZERO, error, "nfs_open"); 355 } else if ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) 356 && clidrev != 0) { 357 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p); 358 retrycnt++; 359 } 360 } while (error == NFSERR_GRACE || error == NFSERR_STALECLIENTID || 361 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 362 error == NFSERR_BADSESSION || 363 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) && 364 expireret == 0 && clidrev != 0 && retrycnt < 4)); 365 if (error && retrycnt >= 4) 366 error = EIO; 367 return (error); 368 } 369 370 /* 371 * the actual open rpc 372 */ 373 APPLESTATIC int 374 nfsrpc_openrpc(struct nfsmount *nmp, vnode_t vp, u_int8_t *nfhp, int fhlen, 375 u_int8_t *newfhp, int newfhlen, u_int32_t mode, struct nfsclopen *op, 376 u_int8_t *name, int namelen, struct nfscldeleg **dpp, 377 int reclaim, u_int32_t delegtype, struct ucred *cred, NFSPROC_T *p, 378 int syscred, int recursed) 379 { 380 u_int32_t *tl; 381 struct nfsrv_descript nfsd, *nd = &nfsd; 382 struct nfscldeleg *dp, *ndp = NULL; 383 struct nfsvattr nfsva; 384 u_int32_t rflags, deleg; 385 nfsattrbit_t attrbits; 386 int error, ret, acesize, limitby; 387 struct nfsclsession *tsep; 388 389 dp = *dpp; 390 *dpp = NULL; 391 nfscl_reqstart(nd, NFSPROC_OPEN, nmp, nfhp, fhlen, NULL, NULL); 392 NFSM_BUILD(tl, u_int32_t *, 5 * NFSX_UNSIGNED); 393 *tl++ = txdr_unsigned(op->nfso_own->nfsow_seqid); 394 *tl++ = txdr_unsigned(mode & NFSV4OPEN_ACCESSBOTH); 395 *tl++ = txdr_unsigned((mode >> NFSLCK_SHIFT) & NFSV4OPEN_DENYBOTH); 396 tsep = nfsmnt_mdssession(nmp); 397 *tl++ = tsep->nfsess_clientid.lval[0]; 398 *tl = tsep->nfsess_clientid.lval[1]; 399 (void) nfsm_strtom(nd, op->nfso_own->nfsow_owner, NFSV4CL_LOCKNAMELEN); 400 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 401 *tl++ = txdr_unsigned(NFSV4OPEN_NOCREATE); 402 if (reclaim) { 403 *tl = txdr_unsigned(NFSV4OPEN_CLAIMPREVIOUS); 404 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 405 *tl = txdr_unsigned(delegtype); 406 } else { 407 if (dp != NULL) { 408 *tl = txdr_unsigned(NFSV4OPEN_CLAIMDELEGATECUR); 409 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID); 410 if (NFSHASNFSV4N(nmp)) 411 *tl++ = 0; 412 else 413 *tl++ = dp->nfsdl_stateid.seqid; 414 *tl++ = dp->nfsdl_stateid.other[0]; 415 *tl++ = dp->nfsdl_stateid.other[1]; 416 *tl = dp->nfsdl_stateid.other[2]; 417 } else { 418 *tl = txdr_unsigned(NFSV4OPEN_CLAIMNULL); 419 } 420 (void) nfsm_strtom(nd, name, namelen); 421 } 422 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 423 *tl = txdr_unsigned(NFSV4OP_GETATTR); 424 NFSZERO_ATTRBIT(&attrbits); 425 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_CHANGE); 426 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_TIMEMODIFY); 427 (void) nfsrv_putattrbit(nd, &attrbits); 428 if (syscred) 429 nd->nd_flag |= ND_USEGSSNAME; 430 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, vp, p, cred, 431 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 432 if (error) 433 return (error); 434 NFSCL_INCRSEQID(op->nfso_own->nfsow_seqid, nd); 435 if (!nd->nd_repstat) { 436 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID + 437 6 * NFSX_UNSIGNED); 438 op->nfso_stateid.seqid = *tl++; 439 op->nfso_stateid.other[0] = *tl++; 440 op->nfso_stateid.other[1] = *tl++; 441 op->nfso_stateid.other[2] = *tl; 442 rflags = fxdr_unsigned(u_int32_t, *(tl + 6)); 443 error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL); 444 if (error) 445 goto nfsmout; 446 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 447 deleg = fxdr_unsigned(u_int32_t, *tl); 448 if (deleg == NFSV4OPEN_DELEGATEREAD || 449 deleg == NFSV4OPEN_DELEGATEWRITE) { 450 if (!(op->nfso_own->nfsow_clp->nfsc_flags & 451 NFSCLFLAGS_FIRSTDELEG)) 452 op->nfso_own->nfsow_clp->nfsc_flags |= 453 (NFSCLFLAGS_FIRSTDELEG | NFSCLFLAGS_GOTDELEG); 454 MALLOC(ndp, struct nfscldeleg *, 455 sizeof (struct nfscldeleg) + newfhlen, 456 M_NFSCLDELEG, M_WAITOK); 457 LIST_INIT(&ndp->nfsdl_owner); 458 LIST_INIT(&ndp->nfsdl_lock); 459 ndp->nfsdl_clp = op->nfso_own->nfsow_clp; 460 ndp->nfsdl_fhlen = newfhlen; 461 NFSBCOPY(newfhp, ndp->nfsdl_fh, newfhlen); 462 newnfs_copyincred(cred, &ndp->nfsdl_cred); 463 nfscl_lockinit(&ndp->nfsdl_rwlock); 464 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID + 465 NFSX_UNSIGNED); 466 ndp->nfsdl_stateid.seqid = *tl++; 467 ndp->nfsdl_stateid.other[0] = *tl++; 468 ndp->nfsdl_stateid.other[1] = *tl++; 469 ndp->nfsdl_stateid.other[2] = *tl++; 470 ret = fxdr_unsigned(int, *tl); 471 if (deleg == NFSV4OPEN_DELEGATEWRITE) { 472 ndp->nfsdl_flags = NFSCLDL_WRITE; 473 /* 474 * Indicates how much the file can grow. 475 */ 476 NFSM_DISSECT(tl, u_int32_t *, 477 3 * NFSX_UNSIGNED); 478 limitby = fxdr_unsigned(int, *tl++); 479 switch (limitby) { 480 case NFSV4OPEN_LIMITSIZE: 481 ndp->nfsdl_sizelimit = fxdr_hyper(tl); 482 break; 483 case NFSV4OPEN_LIMITBLOCKS: 484 ndp->nfsdl_sizelimit = 485 fxdr_unsigned(u_int64_t, *tl++); 486 ndp->nfsdl_sizelimit *= 487 fxdr_unsigned(u_int64_t, *tl); 488 break; 489 default: 490 error = NFSERR_BADXDR; 491 goto nfsmout; 492 } 493 } else { 494 ndp->nfsdl_flags = NFSCLDL_READ; 495 } 496 if (ret) 497 ndp->nfsdl_flags |= NFSCLDL_RECALL; 498 error = nfsrv_dissectace(nd, &ndp->nfsdl_ace, &ret, 499 &acesize, p); 500 if (error) 501 goto nfsmout; 502 } else if (deleg != NFSV4OPEN_DELEGATENONE) { 503 error = NFSERR_BADXDR; 504 goto nfsmout; 505 } 506 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 507 error = nfsv4_loadattr(nd, NULL, &nfsva, NULL, 508 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0, 509 NULL, NULL, NULL, p, cred); 510 if (error) 511 goto nfsmout; 512 if (ndp != NULL) { 513 ndp->nfsdl_change = nfsva.na_filerev; 514 ndp->nfsdl_modtime = nfsva.na_mtime; 515 ndp->nfsdl_flags |= NFSCLDL_MODTIMESET; 516 } 517 if (!reclaim && (rflags & NFSV4OPEN_RESULTCONFIRM)) { 518 do { 519 ret = nfsrpc_openconfirm(vp, newfhp, newfhlen, op, 520 cred, p); 521 if (ret == NFSERR_DELAY) 522 (void) nfs_catnap(PZERO, ret, "nfs_open"); 523 } while (ret == NFSERR_DELAY); 524 error = ret; 525 } 526 if ((rflags & NFSV4OPEN_LOCKTYPEPOSIX) || 527 nfscl_assumeposixlocks) 528 op->nfso_posixlock = 1; 529 else 530 op->nfso_posixlock = 0; 531 532 /* 533 * If the server is handing out delegations, but we didn't 534 * get one because an OpenConfirm was required, try the 535 * Open again, to get a delegation. This is a harmless no-op, 536 * from a server's point of view. 537 */ 538 if (!reclaim && (rflags & NFSV4OPEN_RESULTCONFIRM) && 539 (op->nfso_own->nfsow_clp->nfsc_flags & NFSCLFLAGS_GOTDELEG) 540 && !error && dp == NULL && ndp == NULL && !recursed) { 541 do { 542 ret = nfsrpc_openrpc(nmp, vp, nfhp, fhlen, newfhp, 543 newfhlen, mode, op, name, namelen, &ndp, 0, 0x0, 544 cred, p, syscred, 1); 545 if (ret == NFSERR_DELAY) 546 (void) nfs_catnap(PZERO, ret, "nfs_open2"); 547 } while (ret == NFSERR_DELAY); 548 if (ret) { 549 if (ndp != NULL) { 550 FREE((caddr_t)ndp, M_NFSCLDELEG); 551 ndp = NULL; 552 } 553 if (ret == NFSERR_STALECLIENTID || 554 ret == NFSERR_STALEDONTRECOVER || 555 ret == NFSERR_BADSESSION) 556 error = ret; 557 } 558 } 559 } 560 if (nd->nd_repstat != 0 && error == 0) 561 error = nd->nd_repstat; 562 if (error == NFSERR_STALECLIENTID) 563 nfscl_initiate_recovery(op->nfso_own->nfsow_clp); 564 nfsmout: 565 if (!error) 566 *dpp = ndp; 567 else if (ndp != NULL) 568 FREE((caddr_t)ndp, M_NFSCLDELEG); 569 mbuf_freem(nd->nd_mrep); 570 return (error); 571 } 572 573 /* 574 * open downgrade rpc 575 */ 576 APPLESTATIC int 577 nfsrpc_opendowngrade(vnode_t vp, u_int32_t mode, struct nfsclopen *op, 578 struct ucred *cred, NFSPROC_T *p) 579 { 580 u_int32_t *tl; 581 struct nfsrv_descript nfsd, *nd = &nfsd; 582 int error; 583 584 NFSCL_REQSTART(nd, NFSPROC_OPENDOWNGRADE, vp); 585 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID + 3 * NFSX_UNSIGNED); 586 if (NFSHASNFSV4N(VFSTONFS(vnode_mount(vp)))) 587 *tl++ = 0; 588 else 589 *tl++ = op->nfso_stateid.seqid; 590 *tl++ = op->nfso_stateid.other[0]; 591 *tl++ = op->nfso_stateid.other[1]; 592 *tl++ = op->nfso_stateid.other[2]; 593 *tl++ = txdr_unsigned(op->nfso_own->nfsow_seqid); 594 *tl++ = txdr_unsigned(mode & NFSV4OPEN_ACCESSBOTH); 595 *tl = txdr_unsigned((mode >> NFSLCK_SHIFT) & NFSV4OPEN_DENYBOTH); 596 error = nfscl_request(nd, vp, p, cred, NULL); 597 if (error) 598 return (error); 599 NFSCL_INCRSEQID(op->nfso_own->nfsow_seqid, nd); 600 if (!nd->nd_repstat) { 601 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID); 602 op->nfso_stateid.seqid = *tl++; 603 op->nfso_stateid.other[0] = *tl++; 604 op->nfso_stateid.other[1] = *tl++; 605 op->nfso_stateid.other[2] = *tl; 606 } 607 if (nd->nd_repstat && error == 0) 608 error = nd->nd_repstat; 609 if (error == NFSERR_STALESTATEID) 610 nfscl_initiate_recovery(op->nfso_own->nfsow_clp); 611 nfsmout: 612 mbuf_freem(nd->nd_mrep); 613 return (error); 614 } 615 616 /* 617 * V4 Close operation. 618 */ 619 APPLESTATIC int 620 nfsrpc_close(vnode_t vp, int doclose, NFSPROC_T *p) 621 { 622 struct nfsclclient *clp; 623 int error; 624 625 if (vnode_vtype(vp) != VREG) 626 return (0); 627 if (doclose) 628 error = nfscl_doclose(vp, &clp, p); 629 else 630 error = nfscl_getclose(vp, &clp); 631 if (error) 632 return (error); 633 634 nfscl_clientrelease(clp); 635 return (0); 636 } 637 638 /* 639 * Close the open. 640 */ 641 APPLESTATIC void 642 nfsrpc_doclose(struct nfsmount *nmp, struct nfsclopen *op, NFSPROC_T *p) 643 { 644 struct nfsrv_descript nfsd, *nd = &nfsd; 645 struct nfscllockowner *lp, *nlp; 646 struct nfscllock *lop, *nlop; 647 struct ucred *tcred; 648 u_int64_t off = 0, len = 0; 649 u_int32_t type = NFSV4LOCKT_READ; 650 int error, do_unlock, trycnt; 651 652 tcred = newnfs_getcred(); 653 newnfs_copycred(&op->nfso_cred, tcred); 654 /* 655 * (Theoretically this could be done in the same 656 * compound as the close, but having multiple 657 * sequenced Ops in the same compound might be 658 * too scary for some servers.) 659 */ 660 if (op->nfso_posixlock) { 661 off = 0; 662 len = NFS64BITSSET; 663 type = NFSV4LOCKT_READ; 664 } 665 666 /* 667 * Since this function is only called from VOP_INACTIVE(), no 668 * other thread will be manipulating this Open. As such, the 669 * lock lists are not being changed by other threads, so it should 670 * be safe to do this without locking. 671 */ 672 LIST_FOREACH(lp, &op->nfso_lock, nfsl_list) { 673 do_unlock = 1; 674 LIST_FOREACH_SAFE(lop, &lp->nfsl_lock, nfslo_list, nlop) { 675 if (op->nfso_posixlock == 0) { 676 off = lop->nfslo_first; 677 len = lop->nfslo_end - lop->nfslo_first; 678 if (lop->nfslo_type == F_WRLCK) 679 type = NFSV4LOCKT_WRITE; 680 else 681 type = NFSV4LOCKT_READ; 682 } 683 if (do_unlock) { 684 trycnt = 0; 685 do { 686 error = nfsrpc_locku(nd, nmp, lp, off, 687 len, type, tcred, p, 0); 688 if ((nd->nd_repstat == NFSERR_GRACE || 689 nd->nd_repstat == NFSERR_DELAY) && 690 error == 0) 691 (void) nfs_catnap(PZERO, 692 (int)nd->nd_repstat, 693 "nfs_close"); 694 } while ((nd->nd_repstat == NFSERR_GRACE || 695 nd->nd_repstat == NFSERR_DELAY) && 696 error == 0 && trycnt++ < 5); 697 if (op->nfso_posixlock) 698 do_unlock = 0; 699 } 700 nfscl_freelock(lop, 0); 701 } 702 /* 703 * Do a ReleaseLockOwner. 704 * The lock owner name nfsl_owner may be used by other opens for 705 * other files but the lock_owner4 name that nfsrpc_rellockown() 706 * puts on the wire has the file handle for this file appended 707 * to it, so it can be done now. 708 */ 709 (void)nfsrpc_rellockown(nmp, lp, lp->nfsl_open->nfso_fh, 710 lp->nfsl_open->nfso_fhlen, tcred, p); 711 } 712 713 /* 714 * There could be other Opens for different files on the same 715 * OpenOwner, so locking is required. 716 */ 717 NFSLOCKCLSTATE(); 718 nfscl_lockexcl(&op->nfso_own->nfsow_rwlock, NFSCLSTATEMUTEXPTR); 719 NFSUNLOCKCLSTATE(); 720 do { 721 error = nfscl_tryclose(op, tcred, nmp, p); 722 if (error == NFSERR_GRACE) 723 (void) nfs_catnap(PZERO, error, "nfs_close"); 724 } while (error == NFSERR_GRACE); 725 NFSLOCKCLSTATE(); 726 nfscl_lockunlock(&op->nfso_own->nfsow_rwlock); 727 728 LIST_FOREACH_SAFE(lp, &op->nfso_lock, nfsl_list, nlp) 729 nfscl_freelockowner(lp, 0); 730 nfscl_freeopen(op, 0); 731 NFSUNLOCKCLSTATE(); 732 NFSFREECRED(tcred); 733 } 734 735 /* 736 * The actual Close RPC. 737 */ 738 APPLESTATIC int 739 nfsrpc_closerpc(struct nfsrv_descript *nd, struct nfsmount *nmp, 740 struct nfsclopen *op, struct ucred *cred, NFSPROC_T *p, 741 int syscred) 742 { 743 u_int32_t *tl; 744 int error; 745 746 nfscl_reqstart(nd, NFSPROC_CLOSE, nmp, op->nfso_fh, 747 op->nfso_fhlen, NULL, NULL); 748 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED + NFSX_STATEID); 749 *tl++ = txdr_unsigned(op->nfso_own->nfsow_seqid); 750 if (NFSHASNFSV4N(nmp)) 751 *tl++ = 0; 752 else 753 *tl++ = op->nfso_stateid.seqid; 754 *tl++ = op->nfso_stateid.other[0]; 755 *tl++ = op->nfso_stateid.other[1]; 756 *tl = op->nfso_stateid.other[2]; 757 if (syscred) 758 nd->nd_flag |= ND_USEGSSNAME; 759 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 760 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 761 if (error) 762 return (error); 763 NFSCL_INCRSEQID(op->nfso_own->nfsow_seqid, nd); 764 if (nd->nd_repstat == 0) 765 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID); 766 error = nd->nd_repstat; 767 if (error == NFSERR_STALESTATEID) 768 nfscl_initiate_recovery(op->nfso_own->nfsow_clp); 769 nfsmout: 770 mbuf_freem(nd->nd_mrep); 771 return (error); 772 } 773 774 /* 775 * V4 Open Confirm RPC. 776 */ 777 APPLESTATIC int 778 nfsrpc_openconfirm(vnode_t vp, u_int8_t *nfhp, int fhlen, 779 struct nfsclopen *op, struct ucred *cred, NFSPROC_T *p) 780 { 781 u_int32_t *tl; 782 struct nfsrv_descript nfsd, *nd = &nfsd; 783 struct nfsmount *nmp; 784 int error; 785 786 nmp = VFSTONFS(vnode_mount(vp)); 787 if (NFSHASNFSV4N(nmp)) 788 return (0); /* No confirmation for NFSv4.1. */ 789 nfscl_reqstart(nd, NFSPROC_OPENCONFIRM, nmp, nfhp, fhlen, NULL, NULL); 790 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED + NFSX_STATEID); 791 *tl++ = op->nfso_stateid.seqid; 792 *tl++ = op->nfso_stateid.other[0]; 793 *tl++ = op->nfso_stateid.other[1]; 794 *tl++ = op->nfso_stateid.other[2]; 795 *tl = txdr_unsigned(op->nfso_own->nfsow_seqid); 796 error = nfscl_request(nd, vp, p, cred, NULL); 797 if (error) 798 return (error); 799 NFSCL_INCRSEQID(op->nfso_own->nfsow_seqid, nd); 800 if (!nd->nd_repstat) { 801 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID); 802 op->nfso_stateid.seqid = *tl++; 803 op->nfso_stateid.other[0] = *tl++; 804 op->nfso_stateid.other[1] = *tl++; 805 op->nfso_stateid.other[2] = *tl; 806 } 807 error = nd->nd_repstat; 808 if (error == NFSERR_STALESTATEID) 809 nfscl_initiate_recovery(op->nfso_own->nfsow_clp); 810 nfsmout: 811 mbuf_freem(nd->nd_mrep); 812 return (error); 813 } 814 815 /* 816 * Do the setclientid and setclientid confirm RPCs. Called from nfs_statfs() 817 * when a mount has just occurred and when the server replies NFSERR_EXPIRED. 818 */ 819 APPLESTATIC int 820 nfsrpc_setclient(struct nfsmount *nmp, struct nfsclclient *clp, int reclaim, 821 struct ucred *cred, NFSPROC_T *p) 822 { 823 u_int32_t *tl; 824 struct nfsrv_descript nfsd; 825 struct nfsrv_descript *nd = &nfsd; 826 nfsattrbit_t attrbits; 827 u_int8_t *cp = NULL, *cp2, addr[INET6_ADDRSTRLEN + 9]; 828 u_short port; 829 int error, isinet6 = 0, callblen; 830 nfsquad_t confirm; 831 u_int32_t lease; 832 static u_int32_t rev = 0; 833 struct nfsclds *dsp; 834 struct in6_addr a6; 835 struct nfsclsession *tsep; 836 837 if (nfsboottime.tv_sec == 0) 838 NFSSETBOOTTIME(nfsboottime); 839 clp->nfsc_rev = rev++; 840 if (NFSHASNFSV4N(nmp)) { 841 /* 842 * Either there was no previous session or the 843 * previous session has failed, so... 844 * do an ExchangeID followed by the CreateSession. 845 */ 846 error = nfsrpc_exchangeid(nmp, clp, &nmp->nm_sockreq, 847 NFSV4EXCH_USEPNFSMDS | NFSV4EXCH_USENONPNFS, &dsp, cred, p); 848 NFSCL_DEBUG(1, "aft exch=%d\n", error); 849 if (error == 0) 850 error = nfsrpc_createsession(nmp, &dsp->nfsclds_sess, 851 &nmp->nm_sockreq, 852 dsp->nfsclds_sess.nfsess_sequenceid, 1, cred, p); 853 if (error == 0) { 854 NFSLOCKMNT(nmp); 855 /* 856 * The old sessions cannot be safely free'd 857 * here, since they may still be used by 858 * in-progress RPCs. 859 */ 860 tsep = NULL; 861 if (TAILQ_FIRST(&nmp->nm_sess) != NULL) 862 tsep = NFSMNT_MDSSESSION(nmp); 863 TAILQ_INSERT_HEAD(&nmp->nm_sess, dsp, 864 nfsclds_list); 865 /* 866 * Wake up RPCs waiting for a slot on the 867 * old session. These will then fail with 868 * NFSERR_BADSESSION and be retried with the 869 * new session by nfsv4_setsequence(). 870 * Also wakeup() processes waiting for the 871 * new session. 872 */ 873 if (tsep != NULL) 874 wakeup(&tsep->nfsess_slots); 875 wakeup(&nmp->nm_sess); 876 NFSUNLOCKMNT(nmp); 877 } else 878 nfscl_freenfsclds(dsp); 879 NFSCL_DEBUG(1, "aft createsess=%d\n", error); 880 if (error == 0 && reclaim == 0) { 881 error = nfsrpc_reclaimcomplete(nmp, cred, p); 882 NFSCL_DEBUG(1, "aft reclaimcomp=%d\n", error); 883 if (error == NFSERR_COMPLETEALREADY || 884 error == NFSERR_NOTSUPP) 885 /* Ignore this error. */ 886 error = 0; 887 } 888 return (error); 889 } 890 891 /* 892 * Allocate a single session structure for NFSv4.0, because some of 893 * the fields are used by NFSv4.0 although it doesn't do a session. 894 */ 895 dsp = malloc(sizeof(struct nfsclds), M_NFSCLDS, M_WAITOK | M_ZERO); 896 mtx_init(&dsp->nfsclds_mtx, "nfsds", NULL, MTX_DEF); 897 mtx_init(&dsp->nfsclds_sess.nfsess_mtx, "nfssession", NULL, MTX_DEF); 898 NFSLOCKMNT(nmp); 899 TAILQ_INSERT_HEAD(&nmp->nm_sess, dsp, nfsclds_list); 900 tsep = NFSMNT_MDSSESSION(nmp); 901 NFSUNLOCKMNT(nmp); 902 903 nfscl_reqstart(nd, NFSPROC_SETCLIENTID, nmp, NULL, 0, NULL, NULL); 904 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 905 *tl++ = txdr_unsigned(nfsboottime.tv_sec); 906 *tl = txdr_unsigned(clp->nfsc_rev); 907 (void) nfsm_strtom(nd, clp->nfsc_id, clp->nfsc_idlen); 908 909 /* 910 * set up the callback address 911 */ 912 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 913 *tl = txdr_unsigned(NFS_CALLBCKPROG); 914 callblen = strlen(nfsv4_callbackaddr); 915 if (callblen == 0) 916 cp = nfscl_getmyip(nmp, &a6, &isinet6); 917 if (nfscl_enablecallb && nfs_numnfscbd > 0 && 918 (callblen > 0 || cp != NULL)) { 919 port = htons(nfsv4_cbport); 920 cp2 = (u_int8_t *)&port; 921 #ifdef INET6 922 if ((callblen > 0 && 923 strchr(nfsv4_callbackaddr, ':')) || isinet6) { 924 char ip6buf[INET6_ADDRSTRLEN], *ip6add; 925 926 (void) nfsm_strtom(nd, "tcp6", 4); 927 if (callblen == 0) { 928 ip6_sprintf(ip6buf, (struct in6_addr *)cp); 929 ip6add = ip6buf; 930 } else { 931 ip6add = nfsv4_callbackaddr; 932 } 933 snprintf(addr, INET6_ADDRSTRLEN + 9, "%s.%d.%d", 934 ip6add, cp2[0], cp2[1]); 935 } else 936 #endif 937 { 938 (void) nfsm_strtom(nd, "tcp", 3); 939 if (callblen == 0) 940 snprintf(addr, INET6_ADDRSTRLEN + 9, 941 "%d.%d.%d.%d.%d.%d", cp[0], cp[1], 942 cp[2], cp[3], cp2[0], cp2[1]); 943 else 944 snprintf(addr, INET6_ADDRSTRLEN + 9, 945 "%s.%d.%d", nfsv4_callbackaddr, 946 cp2[0], cp2[1]); 947 } 948 (void) nfsm_strtom(nd, addr, strlen(addr)); 949 } else { 950 (void) nfsm_strtom(nd, "tcp", 3); 951 (void) nfsm_strtom(nd, "0.0.0.0.0.0", 11); 952 } 953 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 954 *tl = txdr_unsigned(clp->nfsc_cbident); 955 nd->nd_flag |= ND_USEGSSNAME; 956 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 957 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 958 if (error) 959 return (error); 960 if (nd->nd_repstat == 0) { 961 NFSM_DISSECT(tl, u_int32_t *, 4 * NFSX_UNSIGNED); 962 tsep->nfsess_clientid.lval[0] = *tl++; 963 tsep->nfsess_clientid.lval[1] = *tl++; 964 confirm.lval[0] = *tl++; 965 confirm.lval[1] = *tl; 966 mbuf_freem(nd->nd_mrep); 967 nd->nd_mrep = NULL; 968 969 /* 970 * and confirm it. 971 */ 972 nfscl_reqstart(nd, NFSPROC_SETCLIENTIDCFRM, nmp, NULL, 0, NULL, 973 NULL); 974 NFSM_BUILD(tl, u_int32_t *, 4 * NFSX_UNSIGNED); 975 *tl++ = tsep->nfsess_clientid.lval[0]; 976 *tl++ = tsep->nfsess_clientid.lval[1]; 977 *tl++ = confirm.lval[0]; 978 *tl = confirm.lval[1]; 979 nd->nd_flag |= ND_USEGSSNAME; 980 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, 981 cred, NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 982 if (error) 983 return (error); 984 mbuf_freem(nd->nd_mrep); 985 nd->nd_mrep = NULL; 986 if (nd->nd_repstat == 0) { 987 nfscl_reqstart(nd, NFSPROC_GETATTR, nmp, nmp->nm_fh, 988 nmp->nm_fhsize, NULL, NULL); 989 NFSZERO_ATTRBIT(&attrbits); 990 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_LEASETIME); 991 (void) nfsrv_putattrbit(nd, &attrbits); 992 nd->nd_flag |= ND_USEGSSNAME; 993 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, 994 cred, NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 995 if (error) 996 return (error); 997 if (nd->nd_repstat == 0) { 998 error = nfsv4_loadattr(nd, NULL, NULL, NULL, NULL, 0, NULL, 999 NULL, NULL, NULL, NULL, 0, NULL, &lease, NULL, p, cred); 1000 if (error) 1001 goto nfsmout; 1002 clp->nfsc_renew = NFSCL_RENEW(lease); 1003 clp->nfsc_expire = NFSD_MONOSEC + clp->nfsc_renew; 1004 clp->nfsc_clientidrev++; 1005 if (clp->nfsc_clientidrev == 0) 1006 clp->nfsc_clientidrev++; 1007 } 1008 } 1009 } 1010 error = nd->nd_repstat; 1011 nfsmout: 1012 mbuf_freem(nd->nd_mrep); 1013 return (error); 1014 } 1015 1016 /* 1017 * nfs getattr call. 1018 */ 1019 APPLESTATIC int 1020 nfsrpc_getattr(vnode_t vp, struct ucred *cred, NFSPROC_T *p, 1021 struct nfsvattr *nap, void *stuff) 1022 { 1023 struct nfsrv_descript nfsd, *nd = &nfsd; 1024 int error; 1025 nfsattrbit_t attrbits; 1026 1027 NFSCL_REQSTART(nd, NFSPROC_GETATTR, vp); 1028 if (nd->nd_flag & ND_NFSV4) { 1029 NFSGETATTR_ATTRBIT(&attrbits); 1030 (void) nfsrv_putattrbit(nd, &attrbits); 1031 } 1032 error = nfscl_request(nd, vp, p, cred, stuff); 1033 if (error) 1034 return (error); 1035 if (!nd->nd_repstat) 1036 error = nfsm_loadattr(nd, nap); 1037 else 1038 error = nd->nd_repstat; 1039 mbuf_freem(nd->nd_mrep); 1040 return (error); 1041 } 1042 1043 /* 1044 * nfs getattr call with non-vnode arguemnts. 1045 */ 1046 APPLESTATIC int 1047 nfsrpc_getattrnovp(struct nfsmount *nmp, u_int8_t *fhp, int fhlen, int syscred, 1048 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, u_int64_t *xidp, 1049 uint32_t *leasep) 1050 { 1051 struct nfsrv_descript nfsd, *nd = &nfsd; 1052 int error, vers = NFS_VER2; 1053 nfsattrbit_t attrbits; 1054 1055 nfscl_reqstart(nd, NFSPROC_GETATTR, nmp, fhp, fhlen, NULL, NULL); 1056 if (nd->nd_flag & ND_NFSV4) { 1057 vers = NFS_VER4; 1058 NFSGETATTR_ATTRBIT(&attrbits); 1059 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_LEASETIME); 1060 (void) nfsrv_putattrbit(nd, &attrbits); 1061 } else if (nd->nd_flag & ND_NFSV3) { 1062 vers = NFS_VER3; 1063 } 1064 if (syscred) 1065 nd->nd_flag |= ND_USEGSSNAME; 1066 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 1067 NFS_PROG, vers, NULL, 1, xidp, NULL); 1068 if (error) 1069 return (error); 1070 if (nd->nd_repstat == 0) { 1071 if ((nd->nd_flag & ND_NFSV4) != 0) 1072 error = nfsv4_loadattr(nd, NULL, nap, NULL, NULL, 0, 1073 NULL, NULL, NULL, NULL, NULL, 0, NULL, leasep, NULL, 1074 NULL, NULL); 1075 else 1076 error = nfsm_loadattr(nd, nap); 1077 } else 1078 error = nd->nd_repstat; 1079 mbuf_freem(nd->nd_mrep); 1080 return (error); 1081 } 1082 1083 /* 1084 * Do an nfs setattr operation. 1085 */ 1086 APPLESTATIC int 1087 nfsrpc_setattr(vnode_t vp, struct vattr *vap, NFSACL_T *aclp, 1088 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *rnap, int *attrflagp, 1089 void *stuff) 1090 { 1091 int error, expireret = 0, openerr, retrycnt; 1092 u_int32_t clidrev = 0, mode; 1093 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 1094 struct nfsfh *nfhp; 1095 nfsv4stateid_t stateid; 1096 void *lckp; 1097 1098 if (nmp->nm_clp != NULL) 1099 clidrev = nmp->nm_clp->nfsc_clientidrev; 1100 if (vap != NULL && NFSATTRISSET(u_quad_t, vap, va_size)) 1101 mode = NFSV4OPEN_ACCESSWRITE; 1102 else 1103 mode = NFSV4OPEN_ACCESSREAD; 1104 retrycnt = 0; 1105 do { 1106 lckp = NULL; 1107 openerr = 1; 1108 if (NFSHASNFSV4(nmp)) { 1109 nfhp = VTONFS(vp)->n_fhp; 1110 error = nfscl_getstateid(vp, nfhp->nfh_fh, 1111 nfhp->nfh_len, mode, 0, cred, p, &stateid, &lckp); 1112 if (error && vnode_vtype(vp) == VREG && 1113 (mode == NFSV4OPEN_ACCESSWRITE || 1114 nfstest_openallsetattr)) { 1115 /* 1116 * No Open stateid, so try and open the file 1117 * now. 1118 */ 1119 if (mode == NFSV4OPEN_ACCESSWRITE) 1120 openerr = nfsrpc_open(vp, FWRITE, cred, 1121 p); 1122 else 1123 openerr = nfsrpc_open(vp, FREAD, cred, 1124 p); 1125 if (!openerr) 1126 (void) nfscl_getstateid(vp, 1127 nfhp->nfh_fh, nfhp->nfh_len, 1128 mode, 0, cred, p, &stateid, &lckp); 1129 } 1130 } 1131 if (vap != NULL) 1132 error = nfsrpc_setattrrpc(vp, vap, &stateid, cred, p, 1133 rnap, attrflagp, stuff); 1134 else 1135 error = nfsrpc_setaclrpc(vp, cred, p, aclp, &stateid, 1136 stuff); 1137 if (error == NFSERR_OPENMODE && mode == NFSV4OPEN_ACCESSREAD) { 1138 NFSLOCKMNT(nmp); 1139 nmp->nm_state |= NFSSTA_OPENMODE; 1140 NFSUNLOCKMNT(nmp); 1141 } 1142 if (error == NFSERR_STALESTATEID) 1143 nfscl_initiate_recovery(nmp->nm_clp); 1144 if (lckp != NULL) 1145 nfscl_lockderef(lckp); 1146 if (!openerr) 1147 (void) nfsrpc_close(vp, 0, p); 1148 if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 1149 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 1150 error == NFSERR_OLDSTATEID || error == NFSERR_BADSESSION) { 1151 (void) nfs_catnap(PZERO, error, "nfs_setattr"); 1152 } else if ((error == NFSERR_EXPIRED || 1153 error == NFSERR_BADSTATEID) && clidrev != 0) { 1154 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p); 1155 } 1156 retrycnt++; 1157 } while (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 1158 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 1159 error == NFSERR_BADSESSION || 1160 (error == NFSERR_OLDSTATEID && retrycnt < 20) || 1161 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) && 1162 expireret == 0 && clidrev != 0 && retrycnt < 4) || 1163 (error == NFSERR_OPENMODE && mode == NFSV4OPEN_ACCESSREAD && 1164 retrycnt < 4)); 1165 if (error && retrycnt >= 4) 1166 error = EIO; 1167 return (error); 1168 } 1169 1170 static int 1171 nfsrpc_setattrrpc(vnode_t vp, struct vattr *vap, 1172 nfsv4stateid_t *stateidp, struct ucred *cred, NFSPROC_T *p, 1173 struct nfsvattr *rnap, int *attrflagp, void *stuff) 1174 { 1175 u_int32_t *tl; 1176 struct nfsrv_descript nfsd, *nd = &nfsd; 1177 int error; 1178 nfsattrbit_t attrbits; 1179 1180 *attrflagp = 0; 1181 NFSCL_REQSTART(nd, NFSPROC_SETATTR, vp); 1182 if (nd->nd_flag & ND_NFSV4) 1183 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID); 1184 vap->va_type = vnode_vtype(vp); 1185 nfscl_fillsattr(nd, vap, vp, NFSSATTR_FULL, 0); 1186 if (nd->nd_flag & ND_NFSV3) { 1187 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1188 *tl = newnfs_false; 1189 } else if (nd->nd_flag & ND_NFSV4) { 1190 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1191 *tl = txdr_unsigned(NFSV4OP_GETATTR); 1192 NFSGETATTR_ATTRBIT(&attrbits); 1193 (void) nfsrv_putattrbit(nd, &attrbits); 1194 } 1195 error = nfscl_request(nd, vp, p, cred, stuff); 1196 if (error) 1197 return (error); 1198 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) 1199 error = nfscl_wcc_data(nd, vp, rnap, attrflagp, NULL, stuff); 1200 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == ND_NFSV4 && !error) 1201 error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL); 1202 if (!(nd->nd_flag & ND_NFSV3) && !nd->nd_repstat && !error) 1203 error = nfscl_postop_attr(nd, rnap, attrflagp, stuff); 1204 mbuf_freem(nd->nd_mrep); 1205 if (nd->nd_repstat && !error) 1206 error = nd->nd_repstat; 1207 return (error); 1208 } 1209 1210 /* 1211 * nfs lookup rpc 1212 */ 1213 APPLESTATIC int 1214 nfsrpc_lookup(vnode_t dvp, char *name, int len, struct ucred *cred, 1215 NFSPROC_T *p, struct nfsvattr *dnap, struct nfsvattr *nap, 1216 struct nfsfh **nfhpp, int *attrflagp, int *dattrflagp, void *stuff) 1217 { 1218 u_int32_t *tl; 1219 struct nfsrv_descript nfsd, *nd = &nfsd; 1220 struct nfsmount *nmp; 1221 struct nfsnode *np; 1222 struct nfsfh *nfhp; 1223 nfsattrbit_t attrbits; 1224 int error = 0, lookupp = 0; 1225 1226 *attrflagp = 0; 1227 *dattrflagp = 0; 1228 if (vnode_vtype(dvp) != VDIR) 1229 return (ENOTDIR); 1230 nmp = VFSTONFS(vnode_mount(dvp)); 1231 if (len > NFS_MAXNAMLEN) 1232 return (ENAMETOOLONG); 1233 if (NFSHASNFSV4(nmp) && len == 1 && 1234 name[0] == '.') { 1235 /* 1236 * Just return the current dir's fh. 1237 */ 1238 np = VTONFS(dvp); 1239 MALLOC(nfhp, struct nfsfh *, sizeof (struct nfsfh) + 1240 np->n_fhp->nfh_len, M_NFSFH, M_WAITOK); 1241 nfhp->nfh_len = np->n_fhp->nfh_len; 1242 NFSBCOPY(np->n_fhp->nfh_fh, nfhp->nfh_fh, nfhp->nfh_len); 1243 *nfhpp = nfhp; 1244 return (0); 1245 } 1246 if (NFSHASNFSV4(nmp) && len == 2 && 1247 name[0] == '.' && name[1] == '.') { 1248 lookupp = 1; 1249 NFSCL_REQSTART(nd, NFSPROC_LOOKUPP, dvp); 1250 } else { 1251 NFSCL_REQSTART(nd, NFSPROC_LOOKUP, dvp); 1252 (void) nfsm_strtom(nd, name, len); 1253 } 1254 if (nd->nd_flag & ND_NFSV4) { 1255 NFSGETATTR_ATTRBIT(&attrbits); 1256 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1257 *tl++ = txdr_unsigned(NFSV4OP_GETFH); 1258 *tl = txdr_unsigned(NFSV4OP_GETATTR); 1259 (void) nfsrv_putattrbit(nd, &attrbits); 1260 } 1261 error = nfscl_request(nd, dvp, p, cred, stuff); 1262 if (error) 1263 return (error); 1264 if (nd->nd_repstat) { 1265 /* 1266 * When an NFSv4 Lookupp returns ENOENT, it means that 1267 * the lookup is at the root of an fs, so return this dir. 1268 */ 1269 if (nd->nd_repstat == NFSERR_NOENT && lookupp) { 1270 np = VTONFS(dvp); 1271 MALLOC(nfhp, struct nfsfh *, sizeof (struct nfsfh) + 1272 np->n_fhp->nfh_len, M_NFSFH, M_WAITOK); 1273 nfhp->nfh_len = np->n_fhp->nfh_len; 1274 NFSBCOPY(np->n_fhp->nfh_fh, nfhp->nfh_fh, nfhp->nfh_len); 1275 *nfhpp = nfhp; 1276 mbuf_freem(nd->nd_mrep); 1277 return (0); 1278 } 1279 if (nd->nd_flag & ND_NFSV3) 1280 error = nfscl_postop_attr(nd, dnap, dattrflagp, stuff); 1281 else if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == 1282 ND_NFSV4) { 1283 /* Load the directory attributes. */ 1284 error = nfsm_loadattr(nd, dnap); 1285 if (error == 0) 1286 *dattrflagp = 1; 1287 } 1288 goto nfsmout; 1289 } 1290 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == ND_NFSV4) { 1291 /* Load the directory attributes. */ 1292 error = nfsm_loadattr(nd, dnap); 1293 if (error != 0) 1294 goto nfsmout; 1295 *dattrflagp = 1; 1296 /* Skip over the Lookup and GetFH operation status values. */ 1297 NFSM_DISSECT(tl, u_int32_t *, 4 * NFSX_UNSIGNED); 1298 } 1299 error = nfsm_getfh(nd, nfhpp); 1300 if (error) 1301 goto nfsmout; 1302 1303 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 1304 if ((nd->nd_flag & ND_NFSV3) && !error) 1305 error = nfscl_postop_attr(nd, dnap, dattrflagp, stuff); 1306 nfsmout: 1307 mbuf_freem(nd->nd_mrep); 1308 if (!error && nd->nd_repstat) 1309 error = nd->nd_repstat; 1310 return (error); 1311 } 1312 1313 /* 1314 * Do a readlink rpc. 1315 */ 1316 APPLESTATIC int 1317 nfsrpc_readlink(vnode_t vp, struct uio *uiop, struct ucred *cred, 1318 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff) 1319 { 1320 u_int32_t *tl; 1321 struct nfsrv_descript nfsd, *nd = &nfsd; 1322 struct nfsnode *np = VTONFS(vp); 1323 nfsattrbit_t attrbits; 1324 int error, len, cangetattr = 1; 1325 1326 *attrflagp = 0; 1327 NFSCL_REQSTART(nd, NFSPROC_READLINK, vp); 1328 if (nd->nd_flag & ND_NFSV4) { 1329 /* 1330 * And do a Getattr op. 1331 */ 1332 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1333 *tl = txdr_unsigned(NFSV4OP_GETATTR); 1334 NFSGETATTR_ATTRBIT(&attrbits); 1335 (void) nfsrv_putattrbit(nd, &attrbits); 1336 } 1337 error = nfscl_request(nd, vp, p, cred, stuff); 1338 if (error) 1339 return (error); 1340 if (nd->nd_flag & ND_NFSV3) 1341 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 1342 if (!nd->nd_repstat && !error) { 1343 NFSM_STRSIZ(len, NFS_MAXPATHLEN); 1344 /* 1345 * This seems weird to me, but must have been added to 1346 * FreeBSD for some reason. The only thing I can think of 1347 * is that there was/is some server that replies with 1348 * more link data than it should? 1349 */ 1350 if (len == NFS_MAXPATHLEN) { 1351 NFSLOCKNODE(np); 1352 if (np->n_size > 0 && np->n_size < NFS_MAXPATHLEN) { 1353 len = np->n_size; 1354 cangetattr = 0; 1355 } 1356 NFSUNLOCKNODE(np); 1357 } 1358 error = nfsm_mbufuio(nd, uiop, len); 1359 if ((nd->nd_flag & ND_NFSV4) && !error && cangetattr) 1360 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 1361 } 1362 if (nd->nd_repstat && !error) 1363 error = nd->nd_repstat; 1364 nfsmout: 1365 mbuf_freem(nd->nd_mrep); 1366 return (error); 1367 } 1368 1369 /* 1370 * Read operation. 1371 */ 1372 APPLESTATIC int 1373 nfsrpc_read(vnode_t vp, struct uio *uiop, struct ucred *cred, 1374 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff) 1375 { 1376 int error, expireret = 0, retrycnt; 1377 u_int32_t clidrev = 0; 1378 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 1379 struct nfsnode *np = VTONFS(vp); 1380 struct ucred *newcred; 1381 struct nfsfh *nfhp = NULL; 1382 nfsv4stateid_t stateid; 1383 void *lckp; 1384 1385 if (nmp->nm_clp != NULL) 1386 clidrev = nmp->nm_clp->nfsc_clientidrev; 1387 newcred = cred; 1388 if (NFSHASNFSV4(nmp)) { 1389 nfhp = np->n_fhp; 1390 newcred = NFSNEWCRED(cred); 1391 } 1392 retrycnt = 0; 1393 do { 1394 lckp = NULL; 1395 if (NFSHASNFSV4(nmp)) 1396 (void)nfscl_getstateid(vp, nfhp->nfh_fh, nfhp->nfh_len, 1397 NFSV4OPEN_ACCESSREAD, 0, newcred, p, &stateid, 1398 &lckp); 1399 error = nfsrpc_readrpc(vp, uiop, newcred, &stateid, p, nap, 1400 attrflagp, stuff); 1401 if (error == NFSERR_OPENMODE) { 1402 NFSLOCKMNT(nmp); 1403 nmp->nm_state |= NFSSTA_OPENMODE; 1404 NFSUNLOCKMNT(nmp); 1405 } 1406 if (error == NFSERR_STALESTATEID) 1407 nfscl_initiate_recovery(nmp->nm_clp); 1408 if (lckp != NULL) 1409 nfscl_lockderef(lckp); 1410 if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 1411 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 1412 error == NFSERR_OLDSTATEID || error == NFSERR_BADSESSION) { 1413 (void) nfs_catnap(PZERO, error, "nfs_read"); 1414 } else if ((error == NFSERR_EXPIRED || 1415 error == NFSERR_BADSTATEID) && clidrev != 0) { 1416 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p); 1417 } 1418 retrycnt++; 1419 } while (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 1420 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 1421 error == NFSERR_BADSESSION || 1422 (error == NFSERR_OLDSTATEID && retrycnt < 20) || 1423 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) && 1424 expireret == 0 && clidrev != 0 && retrycnt < 4) || 1425 (error == NFSERR_OPENMODE && retrycnt < 4)); 1426 if (error && retrycnt >= 4) 1427 error = EIO; 1428 if (NFSHASNFSV4(nmp)) 1429 NFSFREECRED(newcred); 1430 return (error); 1431 } 1432 1433 /* 1434 * The actual read RPC. 1435 */ 1436 static int 1437 nfsrpc_readrpc(vnode_t vp, struct uio *uiop, struct ucred *cred, 1438 nfsv4stateid_t *stateidp, NFSPROC_T *p, struct nfsvattr *nap, 1439 int *attrflagp, void *stuff) 1440 { 1441 u_int32_t *tl; 1442 int error = 0, len, retlen, tsiz, eof = 0; 1443 struct nfsrv_descript nfsd; 1444 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 1445 struct nfsrv_descript *nd = &nfsd; 1446 int rsize; 1447 off_t tmp_off; 1448 1449 *attrflagp = 0; 1450 tsiz = uio_uio_resid(uiop); 1451 tmp_off = uiop->uio_offset + tsiz; 1452 NFSLOCKMNT(nmp); 1453 if (tmp_off > nmp->nm_maxfilesize || tmp_off < uiop->uio_offset) { 1454 NFSUNLOCKMNT(nmp); 1455 return (EFBIG); 1456 } 1457 rsize = nmp->nm_rsize; 1458 NFSUNLOCKMNT(nmp); 1459 nd->nd_mrep = NULL; 1460 while (tsiz > 0) { 1461 *attrflagp = 0; 1462 len = (tsiz > rsize) ? rsize : tsiz; 1463 NFSCL_REQSTART(nd, NFSPROC_READ, vp); 1464 if (nd->nd_flag & ND_NFSV4) 1465 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID); 1466 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED * 3); 1467 if (nd->nd_flag & ND_NFSV2) { 1468 *tl++ = txdr_unsigned(uiop->uio_offset); 1469 *tl++ = txdr_unsigned(len); 1470 *tl = 0; 1471 } else { 1472 txdr_hyper(uiop->uio_offset, tl); 1473 *(tl + 2) = txdr_unsigned(len); 1474 } 1475 /* 1476 * Since I can't do a Getattr for NFSv4 for Write, there 1477 * doesn't seem any point in doing one here, either. 1478 * (See the comment in nfsrpc_writerpc() for more info.) 1479 */ 1480 error = nfscl_request(nd, vp, p, cred, stuff); 1481 if (error) 1482 return (error); 1483 if (nd->nd_flag & ND_NFSV3) { 1484 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 1485 } else if (!nd->nd_repstat && (nd->nd_flag & ND_NFSV2)) { 1486 error = nfsm_loadattr(nd, nap); 1487 if (!error) 1488 *attrflagp = 1; 1489 } 1490 if (nd->nd_repstat || error) { 1491 if (!error) 1492 error = nd->nd_repstat; 1493 goto nfsmout; 1494 } 1495 if (nd->nd_flag & ND_NFSV3) { 1496 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1497 eof = fxdr_unsigned(int, *(tl + 1)); 1498 } else if (nd->nd_flag & ND_NFSV4) { 1499 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 1500 eof = fxdr_unsigned(int, *tl); 1501 } 1502 NFSM_STRSIZ(retlen, len); 1503 error = nfsm_mbufuio(nd, uiop, retlen); 1504 if (error) 1505 goto nfsmout; 1506 mbuf_freem(nd->nd_mrep); 1507 nd->nd_mrep = NULL; 1508 tsiz -= retlen; 1509 if (!(nd->nd_flag & ND_NFSV2)) { 1510 if (eof || retlen == 0) 1511 tsiz = 0; 1512 } else if (retlen < len) 1513 tsiz = 0; 1514 } 1515 return (0); 1516 nfsmout: 1517 if (nd->nd_mrep != NULL) 1518 mbuf_freem(nd->nd_mrep); 1519 return (error); 1520 } 1521 1522 /* 1523 * nfs write operation 1524 * When called_from_strategy != 0, it should return EIO for an error that 1525 * indicates recovery is in progress, so that the buffer will be left 1526 * dirty and be written back to the server later. If it loops around, 1527 * the recovery thread could get stuck waiting for the buffer and recovery 1528 * will then deadlock. 1529 */ 1530 APPLESTATIC int 1531 nfsrpc_write(vnode_t vp, struct uio *uiop, int *iomode, int *must_commit, 1532 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, 1533 void *stuff, int called_from_strategy) 1534 { 1535 int error, expireret = 0, retrycnt, nostateid; 1536 u_int32_t clidrev = 0; 1537 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 1538 struct nfsnode *np = VTONFS(vp); 1539 struct ucred *newcred; 1540 struct nfsfh *nfhp = NULL; 1541 nfsv4stateid_t stateid; 1542 void *lckp; 1543 1544 *must_commit = 0; 1545 if (nmp->nm_clp != NULL) 1546 clidrev = nmp->nm_clp->nfsc_clientidrev; 1547 newcred = cred; 1548 if (NFSHASNFSV4(nmp)) { 1549 newcred = NFSNEWCRED(cred); 1550 nfhp = np->n_fhp; 1551 } 1552 retrycnt = 0; 1553 do { 1554 lckp = NULL; 1555 nostateid = 0; 1556 if (NFSHASNFSV4(nmp)) { 1557 (void)nfscl_getstateid(vp, nfhp->nfh_fh, nfhp->nfh_len, 1558 NFSV4OPEN_ACCESSWRITE, 0, newcred, p, &stateid, 1559 &lckp); 1560 if (stateid.other[0] == 0 && stateid.other[1] == 0 && 1561 stateid.other[2] == 0) { 1562 nostateid = 1; 1563 NFSCL_DEBUG(1, "stateid0 in write\n"); 1564 } 1565 } 1566 1567 /* 1568 * If there is no stateid for NFSv4, it means this is an 1569 * extraneous write after close. Basically a poorly 1570 * implemented buffer cache. Just don't do the write. 1571 */ 1572 if (nostateid) 1573 error = 0; 1574 else 1575 error = nfsrpc_writerpc(vp, uiop, iomode, must_commit, 1576 newcred, &stateid, p, nap, attrflagp, stuff); 1577 if (error == NFSERR_STALESTATEID) 1578 nfscl_initiate_recovery(nmp->nm_clp); 1579 if (lckp != NULL) 1580 nfscl_lockderef(lckp); 1581 if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 1582 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 1583 error == NFSERR_OLDSTATEID || error == NFSERR_BADSESSION) { 1584 (void) nfs_catnap(PZERO, error, "nfs_write"); 1585 } else if ((error == NFSERR_EXPIRED || 1586 error == NFSERR_BADSTATEID) && clidrev != 0) { 1587 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p); 1588 } 1589 retrycnt++; 1590 } while (error == NFSERR_GRACE || error == NFSERR_DELAY || 1591 ((error == NFSERR_STALESTATEID || error == NFSERR_BADSESSION || 1592 error == NFSERR_STALEDONTRECOVER) && called_from_strategy == 0) || 1593 (error == NFSERR_OLDSTATEID && retrycnt < 20) || 1594 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) && 1595 expireret == 0 && clidrev != 0 && retrycnt < 4)); 1596 if (error != 0 && (retrycnt >= 4 || 1597 ((error == NFSERR_STALESTATEID || error == NFSERR_BADSESSION || 1598 error == NFSERR_STALEDONTRECOVER) && called_from_strategy != 0))) 1599 error = EIO; 1600 if (NFSHASNFSV4(nmp)) 1601 NFSFREECRED(newcred); 1602 return (error); 1603 } 1604 1605 /* 1606 * The actual write RPC. 1607 */ 1608 static int 1609 nfsrpc_writerpc(vnode_t vp, struct uio *uiop, int *iomode, 1610 int *must_commit, struct ucred *cred, nfsv4stateid_t *stateidp, 1611 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff) 1612 { 1613 u_int32_t *tl; 1614 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 1615 struct nfsnode *np = VTONFS(vp); 1616 int error = 0, len, tsiz, rlen, commit, committed = NFSWRITE_FILESYNC; 1617 int wccflag = 0, wsize; 1618 int32_t backup; 1619 struct nfsrv_descript nfsd; 1620 struct nfsrv_descript *nd = &nfsd; 1621 nfsattrbit_t attrbits; 1622 off_t tmp_off; 1623 1624 KASSERT(uiop->uio_iovcnt == 1, ("nfs: writerpc iovcnt > 1")); 1625 *attrflagp = 0; 1626 tsiz = uio_uio_resid(uiop); 1627 tmp_off = uiop->uio_offset + tsiz; 1628 NFSLOCKMNT(nmp); 1629 if (tmp_off > nmp->nm_maxfilesize || tmp_off < uiop->uio_offset) { 1630 NFSUNLOCKMNT(nmp); 1631 return (EFBIG); 1632 } 1633 wsize = nmp->nm_wsize; 1634 NFSUNLOCKMNT(nmp); 1635 nd->nd_mrep = NULL; /* NFSv2 sometimes does a write with */ 1636 nd->nd_repstat = 0; /* uio_resid == 0, so the while is not done */ 1637 while (tsiz > 0) { 1638 *attrflagp = 0; 1639 len = (tsiz > wsize) ? wsize : tsiz; 1640 NFSCL_REQSTART(nd, NFSPROC_WRITE, vp); 1641 if (nd->nd_flag & ND_NFSV4) { 1642 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID); 1643 NFSM_BUILD(tl, u_int32_t *, NFSX_HYPER+2*NFSX_UNSIGNED); 1644 txdr_hyper(uiop->uio_offset, tl); 1645 tl += 2; 1646 *tl++ = txdr_unsigned(*iomode); 1647 *tl = txdr_unsigned(len); 1648 } else if (nd->nd_flag & ND_NFSV3) { 1649 NFSM_BUILD(tl, u_int32_t *, NFSX_HYPER+3*NFSX_UNSIGNED); 1650 txdr_hyper(uiop->uio_offset, tl); 1651 tl += 2; 1652 *tl++ = txdr_unsigned(len); 1653 *tl++ = txdr_unsigned(*iomode); 1654 *tl = txdr_unsigned(len); 1655 } else { 1656 u_int32_t x; 1657 1658 NFSM_BUILD(tl, u_int32_t *, 4 * NFSX_UNSIGNED); 1659 /* 1660 * Not sure why someone changed this, since the 1661 * RFC clearly states that "beginoffset" and 1662 * "totalcount" are ignored, but it wouldn't 1663 * surprise me if there's a busted server out there. 1664 */ 1665 /* Set both "begin" and "current" to non-garbage. */ 1666 x = txdr_unsigned((u_int32_t)uiop->uio_offset); 1667 *tl++ = x; /* "begin offset" */ 1668 *tl++ = x; /* "current offset" */ 1669 x = txdr_unsigned(len); 1670 *tl++ = x; /* total to this offset */ 1671 *tl = x; /* size of this write */ 1672 1673 } 1674 nfsm_uiombuf(nd, uiop, len); 1675 /* 1676 * Although it is tempting to do a normal Getattr Op in the 1677 * NFSv4 compound, the result can be a nearly hung client 1678 * system if the Getattr asks for Owner and/or OwnerGroup. 1679 * It occurs when the client can't map either the Owner or 1680 * Owner_group name in the Getattr reply to a uid/gid. When 1681 * there is a cache miss, the kernel does an upcall to the 1682 * nfsuserd. Then, it can try and read the local /etc/passwd 1683 * or /etc/group file. It can then block in getnewbuf(), 1684 * waiting for dirty writes to be pushed to the NFS server. 1685 * The only reason this doesn't result in a complete 1686 * deadlock, is that the upcall times out and allows 1687 * the write to complete. However, progress is so slow 1688 * that it might just as well be deadlocked. 1689 * As such, we get the rest of the attributes, but not 1690 * Owner or Owner_group. 1691 * nb: nfscl_loadattrcache() needs to be told that these 1692 * partial attributes from a write rpc are being 1693 * passed in, via a argument flag. 1694 */ 1695 if (nd->nd_flag & ND_NFSV4) { 1696 NFSWRITEGETATTR_ATTRBIT(&attrbits); 1697 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1698 *tl = txdr_unsigned(NFSV4OP_GETATTR); 1699 (void) nfsrv_putattrbit(nd, &attrbits); 1700 } 1701 error = nfscl_request(nd, vp, p, cred, stuff); 1702 if (error) 1703 return (error); 1704 if (nd->nd_repstat) { 1705 /* 1706 * In case the rpc gets retried, roll 1707 * the uio fileds changed by nfsm_uiombuf() 1708 * back. 1709 */ 1710 uiop->uio_offset -= len; 1711 uio_uio_resid_add(uiop, len); 1712 uio_iov_base_add(uiop, -len); 1713 uio_iov_len_add(uiop, len); 1714 } 1715 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) { 1716 error = nfscl_wcc_data(nd, vp, nap, attrflagp, 1717 &wccflag, stuff); 1718 if (error) 1719 goto nfsmout; 1720 } 1721 if (!nd->nd_repstat) { 1722 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) { 1723 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED 1724 + NFSX_VERF); 1725 rlen = fxdr_unsigned(int, *tl++); 1726 if (rlen == 0) { 1727 error = NFSERR_IO; 1728 goto nfsmout; 1729 } else if (rlen < len) { 1730 backup = len - rlen; 1731 uio_iov_base_add(uiop, -(backup)); 1732 uio_iov_len_add(uiop, backup); 1733 uiop->uio_offset -= backup; 1734 uio_uio_resid_add(uiop, backup); 1735 len = rlen; 1736 } 1737 commit = fxdr_unsigned(int, *tl++); 1738 1739 /* 1740 * Return the lowest commitment level 1741 * obtained by any of the RPCs. 1742 */ 1743 if (committed == NFSWRITE_FILESYNC) 1744 committed = commit; 1745 else if (committed == NFSWRITE_DATASYNC && 1746 commit == NFSWRITE_UNSTABLE) 1747 committed = commit; 1748 NFSLOCKMNT(nmp); 1749 if (!NFSHASWRITEVERF(nmp)) { 1750 NFSBCOPY((caddr_t)tl, 1751 (caddr_t)&nmp->nm_verf[0], 1752 NFSX_VERF); 1753 NFSSETWRITEVERF(nmp); 1754 } else if (NFSBCMP(tl, nmp->nm_verf, 1755 NFSX_VERF)) { 1756 *must_commit = 1; 1757 NFSBCOPY(tl, nmp->nm_verf, NFSX_VERF); 1758 } 1759 NFSUNLOCKMNT(nmp); 1760 } 1761 if (nd->nd_flag & ND_NFSV4) 1762 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1763 if (nd->nd_flag & (ND_NFSV2 | ND_NFSV4)) { 1764 error = nfsm_loadattr(nd, nap); 1765 if (!error) 1766 *attrflagp = NFS_LATTR_NOSHRINK; 1767 } 1768 } else { 1769 error = nd->nd_repstat; 1770 } 1771 if (error) 1772 goto nfsmout; 1773 NFSWRITERPC_SETTIME(wccflag, np, nap, (nd->nd_flag & ND_NFSV4)); 1774 mbuf_freem(nd->nd_mrep); 1775 nd->nd_mrep = NULL; 1776 tsiz -= len; 1777 } 1778 nfsmout: 1779 if (nd->nd_mrep != NULL) 1780 mbuf_freem(nd->nd_mrep); 1781 *iomode = committed; 1782 if (nd->nd_repstat && !error) 1783 error = nd->nd_repstat; 1784 return (error); 1785 } 1786 1787 /* 1788 * nfs mknod rpc 1789 * For NFS v2 this is a kludge. Use a create rpc but with the IFMT bits of the 1790 * mode set to specify the file type and the size field for rdev. 1791 */ 1792 APPLESTATIC int 1793 nfsrpc_mknod(vnode_t dvp, char *name, int namelen, struct vattr *vap, 1794 u_int32_t rdev, enum vtype vtyp, struct ucred *cred, NFSPROC_T *p, 1795 struct nfsvattr *dnap, struct nfsvattr *nnap, struct nfsfh **nfhpp, 1796 int *attrflagp, int *dattrflagp, void *dstuff) 1797 { 1798 u_int32_t *tl; 1799 int error = 0; 1800 struct nfsrv_descript nfsd, *nd = &nfsd; 1801 nfsattrbit_t attrbits; 1802 1803 *nfhpp = NULL; 1804 *attrflagp = 0; 1805 *dattrflagp = 0; 1806 if (namelen > NFS_MAXNAMLEN) 1807 return (ENAMETOOLONG); 1808 NFSCL_REQSTART(nd, NFSPROC_MKNOD, dvp); 1809 if (nd->nd_flag & ND_NFSV4) { 1810 if (vtyp == VBLK || vtyp == VCHR) { 1811 NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 1812 *tl++ = vtonfsv34_type(vtyp); 1813 *tl++ = txdr_unsigned(NFSMAJOR(rdev)); 1814 *tl = txdr_unsigned(NFSMINOR(rdev)); 1815 } else { 1816 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1817 *tl = vtonfsv34_type(vtyp); 1818 } 1819 } 1820 (void) nfsm_strtom(nd, name, namelen); 1821 if (nd->nd_flag & ND_NFSV3) { 1822 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1823 *tl = vtonfsv34_type(vtyp); 1824 } 1825 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) 1826 nfscl_fillsattr(nd, vap, dvp, 0, 0); 1827 if ((nd->nd_flag & ND_NFSV3) && 1828 (vtyp == VCHR || vtyp == VBLK)) { 1829 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1830 *tl++ = txdr_unsigned(NFSMAJOR(rdev)); 1831 *tl = txdr_unsigned(NFSMINOR(rdev)); 1832 } 1833 if (nd->nd_flag & ND_NFSV4) { 1834 NFSGETATTR_ATTRBIT(&attrbits); 1835 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1836 *tl++ = txdr_unsigned(NFSV4OP_GETFH); 1837 *tl = txdr_unsigned(NFSV4OP_GETATTR); 1838 (void) nfsrv_putattrbit(nd, &attrbits); 1839 } 1840 if (nd->nd_flag & ND_NFSV2) 1841 nfscl_fillsattr(nd, vap, dvp, NFSSATTR_SIZERDEV, rdev); 1842 error = nfscl_request(nd, dvp, p, cred, dstuff); 1843 if (error) 1844 return (error); 1845 if (nd->nd_flag & ND_NFSV4) 1846 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 1847 if (!nd->nd_repstat) { 1848 if (nd->nd_flag & ND_NFSV4) { 1849 NFSM_DISSECT(tl, u_int32_t *, 5 * NFSX_UNSIGNED); 1850 error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL); 1851 if (error) 1852 goto nfsmout; 1853 } 1854 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp); 1855 if (error) 1856 goto nfsmout; 1857 } 1858 if (nd->nd_flag & ND_NFSV3) 1859 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 1860 if (!error && nd->nd_repstat) 1861 error = nd->nd_repstat; 1862 nfsmout: 1863 mbuf_freem(nd->nd_mrep); 1864 return (error); 1865 } 1866 1867 /* 1868 * nfs file create call 1869 * Mostly just call the approriate routine. (I separated out v4, so that 1870 * error recovery wouldn't be as difficult.) 1871 */ 1872 APPLESTATIC int 1873 nfsrpc_create(vnode_t dvp, char *name, int namelen, struct vattr *vap, 1874 nfsquad_t cverf, int fmode, struct ucred *cred, NFSPROC_T *p, 1875 struct nfsvattr *dnap, struct nfsvattr *nnap, struct nfsfh **nfhpp, 1876 int *attrflagp, int *dattrflagp, void *dstuff) 1877 { 1878 int error = 0, newone, expireret = 0, retrycnt, unlocked; 1879 struct nfsclowner *owp; 1880 struct nfscldeleg *dp; 1881 struct nfsmount *nmp = VFSTONFS(vnode_mount(dvp)); 1882 u_int32_t clidrev; 1883 1884 if (NFSHASNFSV4(nmp)) { 1885 retrycnt = 0; 1886 do { 1887 dp = NULL; 1888 error = nfscl_open(dvp, NULL, 0, (NFSV4OPEN_ACCESSWRITE | 1889 NFSV4OPEN_ACCESSREAD), 0, cred, p, &owp, NULL, &newone, 1890 NULL, 1); 1891 if (error) 1892 return (error); 1893 if (nmp->nm_clp != NULL) 1894 clidrev = nmp->nm_clp->nfsc_clientidrev; 1895 else 1896 clidrev = 0; 1897 error = nfsrpc_createv4(dvp, name, namelen, vap, cverf, fmode, 1898 owp, &dp, cred, p, dnap, nnap, nfhpp, attrflagp, dattrflagp, 1899 dstuff, &unlocked); 1900 /* 1901 * There is no need to invalidate cached attributes here, 1902 * since new post-delegation issue attributes are always 1903 * returned by nfsrpc_createv4() and these will update the 1904 * attribute cache. 1905 */ 1906 if (dp != NULL) 1907 (void) nfscl_deleg(nmp->nm_mountp, owp->nfsow_clp, 1908 (*nfhpp)->nfh_fh, (*nfhpp)->nfh_len, cred, p, &dp); 1909 nfscl_ownerrelease(nmp, owp, error, newone, unlocked); 1910 if (error == NFSERR_GRACE || error == NFSERR_STALECLIENTID || 1911 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 1912 error == NFSERR_BADSESSION) { 1913 (void) nfs_catnap(PZERO, error, "nfs_open"); 1914 } else if ((error == NFSERR_EXPIRED || 1915 error == NFSERR_BADSTATEID) && clidrev != 0) { 1916 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p); 1917 retrycnt++; 1918 } 1919 } while (error == NFSERR_GRACE || error == NFSERR_STALECLIENTID || 1920 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 1921 error == NFSERR_BADSESSION || 1922 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) && 1923 expireret == 0 && clidrev != 0 && retrycnt < 4)); 1924 if (error && retrycnt >= 4) 1925 error = EIO; 1926 } else { 1927 error = nfsrpc_createv23(dvp, name, namelen, vap, cverf, 1928 fmode, cred, p, dnap, nnap, nfhpp, attrflagp, dattrflagp, 1929 dstuff); 1930 } 1931 return (error); 1932 } 1933 1934 /* 1935 * The create rpc for v2 and 3. 1936 */ 1937 static int 1938 nfsrpc_createv23(vnode_t dvp, char *name, int namelen, struct vattr *vap, 1939 nfsquad_t cverf, int fmode, struct ucred *cred, NFSPROC_T *p, 1940 struct nfsvattr *dnap, struct nfsvattr *nnap, struct nfsfh **nfhpp, 1941 int *attrflagp, int *dattrflagp, void *dstuff) 1942 { 1943 u_int32_t *tl; 1944 int error = 0; 1945 struct nfsrv_descript nfsd, *nd = &nfsd; 1946 1947 *nfhpp = NULL; 1948 *attrflagp = 0; 1949 *dattrflagp = 0; 1950 if (namelen > NFS_MAXNAMLEN) 1951 return (ENAMETOOLONG); 1952 NFSCL_REQSTART(nd, NFSPROC_CREATE, dvp); 1953 (void) nfsm_strtom(nd, name, namelen); 1954 if (nd->nd_flag & ND_NFSV3) { 1955 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1956 if (fmode & O_EXCL) { 1957 *tl = txdr_unsigned(NFSCREATE_EXCLUSIVE); 1958 NFSM_BUILD(tl, u_int32_t *, NFSX_VERF); 1959 *tl++ = cverf.lval[0]; 1960 *tl = cverf.lval[1]; 1961 } else { 1962 *tl = txdr_unsigned(NFSCREATE_UNCHECKED); 1963 nfscl_fillsattr(nd, vap, dvp, 0, 0); 1964 } 1965 } else { 1966 nfscl_fillsattr(nd, vap, dvp, NFSSATTR_SIZE0, 0); 1967 } 1968 error = nfscl_request(nd, dvp, p, cred, dstuff); 1969 if (error) 1970 return (error); 1971 if (nd->nd_repstat == 0) { 1972 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp); 1973 if (error) 1974 goto nfsmout; 1975 } 1976 if (nd->nd_flag & ND_NFSV3) 1977 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 1978 if (nd->nd_repstat != 0 && error == 0) 1979 error = nd->nd_repstat; 1980 nfsmout: 1981 mbuf_freem(nd->nd_mrep); 1982 return (error); 1983 } 1984 1985 static int 1986 nfsrpc_createv4(vnode_t dvp, char *name, int namelen, struct vattr *vap, 1987 nfsquad_t cverf, int fmode, struct nfsclowner *owp, struct nfscldeleg **dpp, 1988 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap, 1989 struct nfsvattr *nnap, struct nfsfh **nfhpp, int *attrflagp, 1990 int *dattrflagp, void *dstuff, int *unlockedp) 1991 { 1992 u_int32_t *tl; 1993 int error = 0, deleg, newone, ret, acesize, limitby; 1994 struct nfsrv_descript nfsd, *nd = &nfsd; 1995 struct nfsclopen *op; 1996 struct nfscldeleg *dp = NULL; 1997 struct nfsnode *np; 1998 struct nfsfh *nfhp; 1999 nfsattrbit_t attrbits; 2000 nfsv4stateid_t stateid; 2001 u_int32_t rflags; 2002 struct nfsmount *nmp; 2003 struct nfsclsession *tsep; 2004 2005 nmp = VFSTONFS(dvp->v_mount); 2006 np = VTONFS(dvp); 2007 *unlockedp = 0; 2008 *nfhpp = NULL; 2009 *dpp = NULL; 2010 *attrflagp = 0; 2011 *dattrflagp = 0; 2012 if (namelen > NFS_MAXNAMLEN) 2013 return (ENAMETOOLONG); 2014 NFSCL_REQSTART(nd, NFSPROC_CREATE, dvp); 2015 /* 2016 * For V4, this is actually an Open op. 2017 */ 2018 NFSM_BUILD(tl, u_int32_t *, 5 * NFSX_UNSIGNED); 2019 *tl++ = txdr_unsigned(owp->nfsow_seqid); 2020 *tl++ = txdr_unsigned(NFSV4OPEN_ACCESSWRITE | 2021 NFSV4OPEN_ACCESSREAD); 2022 *tl++ = txdr_unsigned(NFSV4OPEN_DENYNONE); 2023 tsep = nfsmnt_mdssession(nmp); 2024 *tl++ = tsep->nfsess_clientid.lval[0]; 2025 *tl = tsep->nfsess_clientid.lval[1]; 2026 (void) nfsm_strtom(nd, owp->nfsow_owner, NFSV4CL_LOCKNAMELEN); 2027 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2028 *tl++ = txdr_unsigned(NFSV4OPEN_CREATE); 2029 if (fmode & O_EXCL) { 2030 if (NFSHASNFSV4N(nmp)) { 2031 if (NFSHASSESSPERSIST(nmp)) { 2032 /* Use GUARDED for persistent sessions. */ 2033 *tl = txdr_unsigned(NFSCREATE_GUARDED); 2034 nfscl_fillsattr(nd, vap, dvp, 0, 0); 2035 } else { 2036 /* Otherwise, use EXCLUSIVE4_1. */ 2037 *tl = txdr_unsigned(NFSCREATE_EXCLUSIVE41); 2038 NFSM_BUILD(tl, u_int32_t *, NFSX_VERF); 2039 *tl++ = cverf.lval[0]; 2040 *tl = cverf.lval[1]; 2041 nfscl_fillsattr(nd, vap, dvp, 0, 0); 2042 } 2043 } else { 2044 /* NFSv4.0 */ 2045 *tl = txdr_unsigned(NFSCREATE_EXCLUSIVE); 2046 NFSM_BUILD(tl, u_int32_t *, NFSX_VERF); 2047 *tl++ = cverf.lval[0]; 2048 *tl = cverf.lval[1]; 2049 } 2050 } else { 2051 *tl = txdr_unsigned(NFSCREATE_UNCHECKED); 2052 nfscl_fillsattr(nd, vap, dvp, 0, 0); 2053 } 2054 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2055 *tl = txdr_unsigned(NFSV4OPEN_CLAIMNULL); 2056 (void) nfsm_strtom(nd, name, namelen); 2057 /* Get the new file's handle and attributes. */ 2058 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2059 *tl++ = txdr_unsigned(NFSV4OP_GETFH); 2060 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2061 NFSGETATTR_ATTRBIT(&attrbits); 2062 (void) nfsrv_putattrbit(nd, &attrbits); 2063 /* Get the directory's post-op attributes. */ 2064 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2065 *tl = txdr_unsigned(NFSV4OP_PUTFH); 2066 (void) nfsm_fhtom(nd, np->n_fhp->nfh_fh, np->n_fhp->nfh_len, 0); 2067 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2068 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2069 (void) nfsrv_putattrbit(nd, &attrbits); 2070 error = nfscl_request(nd, dvp, p, cred, dstuff); 2071 if (error) 2072 return (error); 2073 NFSCL_INCRSEQID(owp->nfsow_seqid, nd); 2074 if (nd->nd_repstat == 0) { 2075 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID + 2076 6 * NFSX_UNSIGNED); 2077 stateid.seqid = *tl++; 2078 stateid.other[0] = *tl++; 2079 stateid.other[1] = *tl++; 2080 stateid.other[2] = *tl; 2081 rflags = fxdr_unsigned(u_int32_t, *(tl + 6)); 2082 (void) nfsrv_getattrbits(nd, &attrbits, NULL, NULL); 2083 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2084 deleg = fxdr_unsigned(int, *tl); 2085 if (deleg == NFSV4OPEN_DELEGATEREAD || 2086 deleg == NFSV4OPEN_DELEGATEWRITE) { 2087 if (!(owp->nfsow_clp->nfsc_flags & 2088 NFSCLFLAGS_FIRSTDELEG)) 2089 owp->nfsow_clp->nfsc_flags |= 2090 (NFSCLFLAGS_FIRSTDELEG | NFSCLFLAGS_GOTDELEG); 2091 MALLOC(dp, struct nfscldeleg *, 2092 sizeof (struct nfscldeleg) + NFSX_V4FHMAX, 2093 M_NFSCLDELEG, M_WAITOK); 2094 LIST_INIT(&dp->nfsdl_owner); 2095 LIST_INIT(&dp->nfsdl_lock); 2096 dp->nfsdl_clp = owp->nfsow_clp; 2097 newnfs_copyincred(cred, &dp->nfsdl_cred); 2098 nfscl_lockinit(&dp->nfsdl_rwlock); 2099 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID + 2100 NFSX_UNSIGNED); 2101 dp->nfsdl_stateid.seqid = *tl++; 2102 dp->nfsdl_stateid.other[0] = *tl++; 2103 dp->nfsdl_stateid.other[1] = *tl++; 2104 dp->nfsdl_stateid.other[2] = *tl++; 2105 ret = fxdr_unsigned(int, *tl); 2106 if (deleg == NFSV4OPEN_DELEGATEWRITE) { 2107 dp->nfsdl_flags = NFSCLDL_WRITE; 2108 /* 2109 * Indicates how much the file can grow. 2110 */ 2111 NFSM_DISSECT(tl, u_int32_t *, 2112 3 * NFSX_UNSIGNED); 2113 limitby = fxdr_unsigned(int, *tl++); 2114 switch (limitby) { 2115 case NFSV4OPEN_LIMITSIZE: 2116 dp->nfsdl_sizelimit = fxdr_hyper(tl); 2117 break; 2118 case NFSV4OPEN_LIMITBLOCKS: 2119 dp->nfsdl_sizelimit = 2120 fxdr_unsigned(u_int64_t, *tl++); 2121 dp->nfsdl_sizelimit *= 2122 fxdr_unsigned(u_int64_t, *tl); 2123 break; 2124 default: 2125 error = NFSERR_BADXDR; 2126 goto nfsmout; 2127 } 2128 } else { 2129 dp->nfsdl_flags = NFSCLDL_READ; 2130 } 2131 if (ret) 2132 dp->nfsdl_flags |= NFSCLDL_RECALL; 2133 error = nfsrv_dissectace(nd, &dp->nfsdl_ace, &ret, 2134 &acesize, p); 2135 if (error) 2136 goto nfsmout; 2137 } else if (deleg != NFSV4OPEN_DELEGATENONE) { 2138 error = NFSERR_BADXDR; 2139 goto nfsmout; 2140 } 2141 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp); 2142 if (error) 2143 goto nfsmout; 2144 /* Get rid of the PutFH and Getattr status values. */ 2145 NFSM_DISSECT(tl, u_int32_t *, 4 * NFSX_UNSIGNED); 2146 /* Load the directory attributes. */ 2147 error = nfsm_loadattr(nd, dnap); 2148 if (error) 2149 goto nfsmout; 2150 *dattrflagp = 1; 2151 if (dp != NULL && *attrflagp) { 2152 dp->nfsdl_change = nnap->na_filerev; 2153 dp->nfsdl_modtime = nnap->na_mtime; 2154 dp->nfsdl_flags |= NFSCLDL_MODTIMESET; 2155 } 2156 /* 2157 * We can now complete the Open state. 2158 */ 2159 nfhp = *nfhpp; 2160 if (dp != NULL) { 2161 dp->nfsdl_fhlen = nfhp->nfh_len; 2162 NFSBCOPY(nfhp->nfh_fh, dp->nfsdl_fh, nfhp->nfh_len); 2163 } 2164 /* 2165 * Get an Open structure that will be 2166 * attached to the OpenOwner, acquired already. 2167 */ 2168 error = nfscl_open(dvp, nfhp->nfh_fh, nfhp->nfh_len, 2169 (NFSV4OPEN_ACCESSWRITE | NFSV4OPEN_ACCESSREAD), 0, 2170 cred, p, NULL, &op, &newone, NULL, 0); 2171 if (error) 2172 goto nfsmout; 2173 op->nfso_stateid = stateid; 2174 newnfs_copyincred(cred, &op->nfso_cred); 2175 if ((rflags & NFSV4OPEN_RESULTCONFIRM)) { 2176 do { 2177 ret = nfsrpc_openconfirm(dvp, nfhp->nfh_fh, 2178 nfhp->nfh_len, op, cred, p); 2179 if (ret == NFSERR_DELAY) 2180 (void) nfs_catnap(PZERO, ret, "nfs_create"); 2181 } while (ret == NFSERR_DELAY); 2182 error = ret; 2183 } 2184 2185 /* 2186 * If the server is handing out delegations, but we didn't 2187 * get one because an OpenConfirm was required, try the 2188 * Open again, to get a delegation. This is a harmless no-op, 2189 * from a server's point of view. 2190 */ 2191 if ((rflags & NFSV4OPEN_RESULTCONFIRM) && 2192 (owp->nfsow_clp->nfsc_flags & NFSCLFLAGS_GOTDELEG) && 2193 !error && dp == NULL) { 2194 do { 2195 ret = nfsrpc_openrpc(VFSTONFS(vnode_mount(dvp)), dvp, 2196 np->n_fhp->nfh_fh, np->n_fhp->nfh_len, 2197 nfhp->nfh_fh, nfhp->nfh_len, 2198 (NFSV4OPEN_ACCESSWRITE | NFSV4OPEN_ACCESSREAD), op, 2199 name, namelen, &dp, 0, 0x0, cred, p, 0, 1); 2200 if (ret == NFSERR_DELAY) 2201 (void) nfs_catnap(PZERO, ret, "nfs_crt2"); 2202 } while (ret == NFSERR_DELAY); 2203 if (ret) { 2204 if (dp != NULL) { 2205 FREE((caddr_t)dp, M_NFSCLDELEG); 2206 dp = NULL; 2207 } 2208 if (ret == NFSERR_STALECLIENTID || 2209 ret == NFSERR_STALEDONTRECOVER || 2210 ret == NFSERR_BADSESSION) 2211 error = ret; 2212 } 2213 } 2214 nfscl_openrelease(nmp, op, error, newone); 2215 *unlockedp = 1; 2216 } 2217 if (nd->nd_repstat != 0 && error == 0) 2218 error = nd->nd_repstat; 2219 if (error == NFSERR_STALECLIENTID) 2220 nfscl_initiate_recovery(owp->nfsow_clp); 2221 nfsmout: 2222 if (!error) 2223 *dpp = dp; 2224 else if (dp != NULL) 2225 FREE((caddr_t)dp, M_NFSCLDELEG); 2226 mbuf_freem(nd->nd_mrep); 2227 return (error); 2228 } 2229 2230 /* 2231 * Nfs remove rpc 2232 */ 2233 APPLESTATIC int 2234 nfsrpc_remove(vnode_t dvp, char *name, int namelen, vnode_t vp, 2235 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap, int *dattrflagp, 2236 void *dstuff) 2237 { 2238 u_int32_t *tl; 2239 struct nfsrv_descript nfsd, *nd = &nfsd; 2240 struct nfsnode *np; 2241 struct nfsmount *nmp; 2242 nfsv4stateid_t dstateid; 2243 int error, ret = 0, i; 2244 2245 *dattrflagp = 0; 2246 if (namelen > NFS_MAXNAMLEN) 2247 return (ENAMETOOLONG); 2248 nmp = VFSTONFS(vnode_mount(dvp)); 2249 tryagain: 2250 if (NFSHASNFSV4(nmp) && ret == 0) { 2251 ret = nfscl_removedeleg(vp, p, &dstateid); 2252 if (ret == 1) { 2253 NFSCL_REQSTART(nd, NFSPROC_RETDELEGREMOVE, vp); 2254 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID + 2255 NFSX_UNSIGNED); 2256 if (NFSHASNFSV4N(nmp)) 2257 *tl++ = 0; 2258 else 2259 *tl++ = dstateid.seqid; 2260 *tl++ = dstateid.other[0]; 2261 *tl++ = dstateid.other[1]; 2262 *tl++ = dstateid.other[2]; 2263 *tl = txdr_unsigned(NFSV4OP_PUTFH); 2264 np = VTONFS(dvp); 2265 (void) nfsm_fhtom(nd, np->n_fhp->nfh_fh, 2266 np->n_fhp->nfh_len, 0); 2267 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2268 *tl = txdr_unsigned(NFSV4OP_REMOVE); 2269 } 2270 } else { 2271 ret = 0; 2272 } 2273 if (ret == 0) 2274 NFSCL_REQSTART(nd, NFSPROC_REMOVE, dvp); 2275 (void) nfsm_strtom(nd, name, namelen); 2276 error = nfscl_request(nd, dvp, p, cred, dstuff); 2277 if (error) 2278 return (error); 2279 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) { 2280 /* For NFSv4, parse out any Delereturn replies. */ 2281 if (ret > 0 && nd->nd_repstat != 0 && 2282 (nd->nd_flag & ND_NOMOREDATA)) { 2283 /* 2284 * If the Delegreturn failed, try again without 2285 * it. The server will Recall, as required. 2286 */ 2287 mbuf_freem(nd->nd_mrep); 2288 goto tryagain; 2289 } 2290 for (i = 0; i < (ret * 2); i++) { 2291 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == 2292 ND_NFSV4) { 2293 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2294 if (*(tl + 1)) 2295 nd->nd_flag |= ND_NOMOREDATA; 2296 } 2297 } 2298 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 2299 } 2300 if (nd->nd_repstat && !error) 2301 error = nd->nd_repstat; 2302 nfsmout: 2303 mbuf_freem(nd->nd_mrep); 2304 return (error); 2305 } 2306 2307 /* 2308 * Do an nfs rename rpc. 2309 */ 2310 APPLESTATIC int 2311 nfsrpc_rename(vnode_t fdvp, vnode_t fvp, char *fnameptr, int fnamelen, 2312 vnode_t tdvp, vnode_t tvp, char *tnameptr, int tnamelen, struct ucred *cred, 2313 NFSPROC_T *p, struct nfsvattr *fnap, struct nfsvattr *tnap, 2314 int *fattrflagp, int *tattrflagp, void *fstuff, void *tstuff) 2315 { 2316 u_int32_t *tl; 2317 struct nfsrv_descript nfsd, *nd = &nfsd; 2318 struct nfsmount *nmp; 2319 struct nfsnode *np; 2320 nfsattrbit_t attrbits; 2321 nfsv4stateid_t fdstateid, tdstateid; 2322 int error = 0, ret = 0, gottd = 0, gotfd = 0, i; 2323 2324 *fattrflagp = 0; 2325 *tattrflagp = 0; 2326 nmp = VFSTONFS(vnode_mount(fdvp)); 2327 if (fnamelen > NFS_MAXNAMLEN || tnamelen > NFS_MAXNAMLEN) 2328 return (ENAMETOOLONG); 2329 tryagain: 2330 if (NFSHASNFSV4(nmp) && ret == 0) { 2331 ret = nfscl_renamedeleg(fvp, &fdstateid, &gotfd, tvp, 2332 &tdstateid, &gottd, p); 2333 if (gotfd && gottd) { 2334 NFSCL_REQSTART(nd, NFSPROC_RETDELEGRENAME2, fvp); 2335 } else if (gotfd) { 2336 NFSCL_REQSTART(nd, NFSPROC_RETDELEGRENAME1, fvp); 2337 } else if (gottd) { 2338 NFSCL_REQSTART(nd, NFSPROC_RETDELEGRENAME1, tvp); 2339 } 2340 if (gotfd) { 2341 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID); 2342 if (NFSHASNFSV4N(nmp)) 2343 *tl++ = 0; 2344 else 2345 *tl++ = fdstateid.seqid; 2346 *tl++ = fdstateid.other[0]; 2347 *tl++ = fdstateid.other[1]; 2348 *tl = fdstateid.other[2]; 2349 if (gottd) { 2350 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2351 *tl = txdr_unsigned(NFSV4OP_PUTFH); 2352 np = VTONFS(tvp); 2353 (void) nfsm_fhtom(nd, np->n_fhp->nfh_fh, 2354 np->n_fhp->nfh_len, 0); 2355 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2356 *tl = txdr_unsigned(NFSV4OP_DELEGRETURN); 2357 } 2358 } 2359 if (gottd) { 2360 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID); 2361 if (NFSHASNFSV4N(nmp)) 2362 *tl++ = 0; 2363 else 2364 *tl++ = tdstateid.seqid; 2365 *tl++ = tdstateid.other[0]; 2366 *tl++ = tdstateid.other[1]; 2367 *tl = tdstateid.other[2]; 2368 } 2369 if (ret > 0) { 2370 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2371 *tl = txdr_unsigned(NFSV4OP_PUTFH); 2372 np = VTONFS(fdvp); 2373 (void) nfsm_fhtom(nd, np->n_fhp->nfh_fh, 2374 np->n_fhp->nfh_len, 0); 2375 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2376 *tl = txdr_unsigned(NFSV4OP_SAVEFH); 2377 } 2378 } else { 2379 ret = 0; 2380 } 2381 if (ret == 0) 2382 NFSCL_REQSTART(nd, NFSPROC_RENAME, fdvp); 2383 if (nd->nd_flag & ND_NFSV4) { 2384 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2385 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2386 NFSWCCATTR_ATTRBIT(&attrbits); 2387 (void) nfsrv_putattrbit(nd, &attrbits); 2388 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2389 *tl = txdr_unsigned(NFSV4OP_PUTFH); 2390 (void) nfsm_fhtom(nd, VTONFS(tdvp)->n_fhp->nfh_fh, 2391 VTONFS(tdvp)->n_fhp->nfh_len, 0); 2392 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2393 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2394 (void) nfsrv_putattrbit(nd, &attrbits); 2395 nd->nd_flag |= ND_V4WCCATTR; 2396 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2397 *tl = txdr_unsigned(NFSV4OP_RENAME); 2398 } 2399 (void) nfsm_strtom(nd, fnameptr, fnamelen); 2400 if (!(nd->nd_flag & ND_NFSV4)) 2401 (void) nfsm_fhtom(nd, VTONFS(tdvp)->n_fhp->nfh_fh, 2402 VTONFS(tdvp)->n_fhp->nfh_len, 0); 2403 (void) nfsm_strtom(nd, tnameptr, tnamelen); 2404 error = nfscl_request(nd, fdvp, p, cred, fstuff); 2405 if (error) 2406 return (error); 2407 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) { 2408 /* For NFSv4, parse out any Delereturn replies. */ 2409 if (ret > 0 && nd->nd_repstat != 0 && 2410 (nd->nd_flag & ND_NOMOREDATA)) { 2411 /* 2412 * If the Delegreturn failed, try again without 2413 * it. The server will Recall, as required. 2414 */ 2415 mbuf_freem(nd->nd_mrep); 2416 goto tryagain; 2417 } 2418 for (i = 0; i < (ret * 2); i++) { 2419 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == 2420 ND_NFSV4) { 2421 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2422 if (*(tl + 1)) { 2423 if (i == 0 && ret > 1) { 2424 /* 2425 * If the Delegreturn failed, try again 2426 * without it. The server will Recall, as 2427 * required. 2428 * If ret > 1, the first iteration of this 2429 * loop is the second DelegReturn result. 2430 */ 2431 mbuf_freem(nd->nd_mrep); 2432 goto tryagain; 2433 } else { 2434 nd->nd_flag |= ND_NOMOREDATA; 2435 } 2436 } 2437 } 2438 } 2439 /* Now, the first wcc attribute reply. */ 2440 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == ND_NFSV4) { 2441 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2442 if (*(tl + 1)) 2443 nd->nd_flag |= ND_NOMOREDATA; 2444 } 2445 error = nfscl_wcc_data(nd, fdvp, fnap, fattrflagp, NULL, 2446 fstuff); 2447 /* and the second wcc attribute reply. */ 2448 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == ND_NFSV4 && 2449 !error) { 2450 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2451 if (*(tl + 1)) 2452 nd->nd_flag |= ND_NOMOREDATA; 2453 } 2454 if (!error) 2455 error = nfscl_wcc_data(nd, tdvp, tnap, tattrflagp, 2456 NULL, tstuff); 2457 } 2458 if (nd->nd_repstat && !error) 2459 error = nd->nd_repstat; 2460 nfsmout: 2461 mbuf_freem(nd->nd_mrep); 2462 return (error); 2463 } 2464 2465 /* 2466 * nfs hard link create rpc 2467 */ 2468 APPLESTATIC int 2469 nfsrpc_link(vnode_t dvp, vnode_t vp, char *name, int namelen, 2470 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap, 2471 struct nfsvattr *nap, int *attrflagp, int *dattrflagp, void *dstuff) 2472 { 2473 u_int32_t *tl; 2474 struct nfsrv_descript nfsd, *nd = &nfsd; 2475 nfsattrbit_t attrbits; 2476 int error = 0; 2477 2478 *attrflagp = 0; 2479 *dattrflagp = 0; 2480 if (namelen > NFS_MAXNAMLEN) 2481 return (ENAMETOOLONG); 2482 NFSCL_REQSTART(nd, NFSPROC_LINK, vp); 2483 if (nd->nd_flag & ND_NFSV4) { 2484 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2485 *tl = txdr_unsigned(NFSV4OP_PUTFH); 2486 } 2487 (void) nfsm_fhtom(nd, VTONFS(dvp)->n_fhp->nfh_fh, 2488 VTONFS(dvp)->n_fhp->nfh_len, 0); 2489 if (nd->nd_flag & ND_NFSV4) { 2490 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2491 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2492 NFSWCCATTR_ATTRBIT(&attrbits); 2493 (void) nfsrv_putattrbit(nd, &attrbits); 2494 nd->nd_flag |= ND_V4WCCATTR; 2495 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2496 *tl = txdr_unsigned(NFSV4OP_LINK); 2497 } 2498 (void) nfsm_strtom(nd, name, namelen); 2499 error = nfscl_request(nd, vp, p, cred, dstuff); 2500 if (error) 2501 return (error); 2502 if (nd->nd_flag & ND_NFSV3) { 2503 error = nfscl_postop_attr(nd, nap, attrflagp, dstuff); 2504 if (!error) 2505 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, 2506 NULL, dstuff); 2507 } else if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == ND_NFSV4) { 2508 /* 2509 * First, parse out the PutFH and Getattr result. 2510 */ 2511 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2512 if (!(*(tl + 1))) 2513 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2514 if (*(tl + 1)) 2515 nd->nd_flag |= ND_NOMOREDATA; 2516 /* 2517 * Get the pre-op attributes. 2518 */ 2519 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 2520 } 2521 if (nd->nd_repstat && !error) 2522 error = nd->nd_repstat; 2523 nfsmout: 2524 mbuf_freem(nd->nd_mrep); 2525 return (error); 2526 } 2527 2528 /* 2529 * nfs symbolic link create rpc 2530 */ 2531 APPLESTATIC int 2532 nfsrpc_symlink(vnode_t dvp, char *name, int namelen, char *target, 2533 struct vattr *vap, struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap, 2534 struct nfsvattr *nnap, struct nfsfh **nfhpp, int *attrflagp, 2535 int *dattrflagp, void *dstuff) 2536 { 2537 u_int32_t *tl; 2538 struct nfsrv_descript nfsd, *nd = &nfsd; 2539 struct nfsmount *nmp; 2540 int slen, error = 0; 2541 2542 *nfhpp = NULL; 2543 *attrflagp = 0; 2544 *dattrflagp = 0; 2545 nmp = VFSTONFS(vnode_mount(dvp)); 2546 slen = strlen(target); 2547 if (slen > NFS_MAXPATHLEN || namelen > NFS_MAXNAMLEN) 2548 return (ENAMETOOLONG); 2549 NFSCL_REQSTART(nd, NFSPROC_SYMLINK, dvp); 2550 if (nd->nd_flag & ND_NFSV4) { 2551 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2552 *tl = txdr_unsigned(NFLNK); 2553 (void) nfsm_strtom(nd, target, slen); 2554 } 2555 (void) nfsm_strtom(nd, name, namelen); 2556 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) 2557 nfscl_fillsattr(nd, vap, dvp, 0, 0); 2558 if (!(nd->nd_flag & ND_NFSV4)) 2559 (void) nfsm_strtom(nd, target, slen); 2560 if (nd->nd_flag & ND_NFSV2) 2561 nfscl_fillsattr(nd, vap, dvp, NFSSATTR_SIZENEG1, 0); 2562 error = nfscl_request(nd, dvp, p, cred, dstuff); 2563 if (error) 2564 return (error); 2565 if (nd->nd_flag & ND_NFSV4) 2566 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 2567 if ((nd->nd_flag & ND_NFSV3) && !error) { 2568 if (!nd->nd_repstat) 2569 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp); 2570 if (!error) 2571 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, 2572 NULL, dstuff); 2573 } 2574 if (nd->nd_repstat && !error) 2575 error = nd->nd_repstat; 2576 mbuf_freem(nd->nd_mrep); 2577 /* 2578 * Kludge: Map EEXIST => 0 assuming that it is a reply to a retry. 2579 * Only do this if vfs.nfs.ignore_eexist is set. 2580 * Never do this for NFSv4.1 or later minor versions, since sessions 2581 * should guarantee "exactly once" RPC semantics. 2582 */ 2583 if (error == EEXIST && nfsignore_eexist != 0 && (!NFSHASNFSV4(nmp) || 2584 nmp->nm_minorvers == 0)) 2585 error = 0; 2586 return (error); 2587 } 2588 2589 /* 2590 * nfs make dir rpc 2591 */ 2592 APPLESTATIC int 2593 nfsrpc_mkdir(vnode_t dvp, char *name, int namelen, struct vattr *vap, 2594 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap, 2595 struct nfsvattr *nnap, struct nfsfh **nfhpp, int *attrflagp, 2596 int *dattrflagp, void *dstuff) 2597 { 2598 u_int32_t *tl; 2599 struct nfsrv_descript nfsd, *nd = &nfsd; 2600 nfsattrbit_t attrbits; 2601 int error = 0; 2602 struct nfsfh *fhp; 2603 struct nfsmount *nmp; 2604 2605 *nfhpp = NULL; 2606 *attrflagp = 0; 2607 *dattrflagp = 0; 2608 nmp = VFSTONFS(vnode_mount(dvp)); 2609 fhp = VTONFS(dvp)->n_fhp; 2610 if (namelen > NFS_MAXNAMLEN) 2611 return (ENAMETOOLONG); 2612 NFSCL_REQSTART(nd, NFSPROC_MKDIR, dvp); 2613 if (nd->nd_flag & ND_NFSV4) { 2614 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2615 *tl = txdr_unsigned(NFDIR); 2616 } 2617 (void) nfsm_strtom(nd, name, namelen); 2618 nfscl_fillsattr(nd, vap, dvp, NFSSATTR_SIZENEG1, 0); 2619 if (nd->nd_flag & ND_NFSV4) { 2620 NFSGETATTR_ATTRBIT(&attrbits); 2621 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2622 *tl++ = txdr_unsigned(NFSV4OP_GETFH); 2623 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2624 (void) nfsrv_putattrbit(nd, &attrbits); 2625 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2626 *tl = txdr_unsigned(NFSV4OP_PUTFH); 2627 (void) nfsm_fhtom(nd, fhp->nfh_fh, fhp->nfh_len, 0); 2628 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2629 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2630 (void) nfsrv_putattrbit(nd, &attrbits); 2631 } 2632 error = nfscl_request(nd, dvp, p, cred, dstuff); 2633 if (error) 2634 return (error); 2635 if (nd->nd_flag & ND_NFSV4) 2636 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 2637 if (!nd->nd_repstat && !error) { 2638 if (nd->nd_flag & ND_NFSV4) { 2639 NFSM_DISSECT(tl, u_int32_t *, 5 * NFSX_UNSIGNED); 2640 error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL); 2641 } 2642 if (!error) 2643 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp); 2644 if (error == 0 && (nd->nd_flag & ND_NFSV4) != 0) { 2645 /* Get rid of the PutFH and Getattr status values. */ 2646 NFSM_DISSECT(tl, u_int32_t *, 4 * NFSX_UNSIGNED); 2647 /* Load the directory attributes. */ 2648 error = nfsm_loadattr(nd, dnap); 2649 if (error == 0) 2650 *dattrflagp = 1; 2651 } 2652 } 2653 if ((nd->nd_flag & ND_NFSV3) && !error) 2654 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 2655 if (nd->nd_repstat && !error) 2656 error = nd->nd_repstat; 2657 nfsmout: 2658 mbuf_freem(nd->nd_mrep); 2659 /* 2660 * Kludge: Map EEXIST => 0 assuming that it is a reply to a retry. 2661 * Only do this if vfs.nfs.ignore_eexist is set. 2662 * Never do this for NFSv4.1 or later minor versions, since sessions 2663 * should guarantee "exactly once" RPC semantics. 2664 */ 2665 if (error == EEXIST && nfsignore_eexist != 0 && (!NFSHASNFSV4(nmp) || 2666 nmp->nm_minorvers == 0)) 2667 error = 0; 2668 return (error); 2669 } 2670 2671 /* 2672 * nfs remove directory call 2673 */ 2674 APPLESTATIC int 2675 nfsrpc_rmdir(vnode_t dvp, char *name, int namelen, struct ucred *cred, 2676 NFSPROC_T *p, struct nfsvattr *dnap, int *dattrflagp, void *dstuff) 2677 { 2678 struct nfsrv_descript nfsd, *nd = &nfsd; 2679 int error = 0; 2680 2681 *dattrflagp = 0; 2682 if (namelen > NFS_MAXNAMLEN) 2683 return (ENAMETOOLONG); 2684 NFSCL_REQSTART(nd, NFSPROC_RMDIR, dvp); 2685 (void) nfsm_strtom(nd, name, namelen); 2686 error = nfscl_request(nd, dvp, p, cred, dstuff); 2687 if (error) 2688 return (error); 2689 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) 2690 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 2691 if (nd->nd_repstat && !error) 2692 error = nd->nd_repstat; 2693 mbuf_freem(nd->nd_mrep); 2694 /* 2695 * Kludge: Map ENOENT => 0 assuming that you have a reply to a retry. 2696 */ 2697 if (error == ENOENT) 2698 error = 0; 2699 return (error); 2700 } 2701 2702 /* 2703 * Readdir rpc. 2704 * Always returns with either uio_resid unchanged, if you are at the 2705 * end of the directory, or uio_resid == 0, with all DIRBLKSIZ chunks 2706 * filled in. 2707 * I felt this would allow caching of directory blocks more easily 2708 * than returning a pertially filled block. 2709 * Directory offset cookies: 2710 * Oh my, what to do with them... 2711 * I can think of three ways to deal with them: 2712 * 1 - have the layer above these RPCs maintain a map between logical 2713 * directory byte offsets and the NFS directory offset cookies 2714 * 2 - pass the opaque directory offset cookies up into userland 2715 * and let the libc functions deal with them, via the system call 2716 * 3 - return them to userland in the "struct dirent", so future versions 2717 * of libc can use them and do whatever is necessary to make things work 2718 * above these rpc calls, in the meantime 2719 * For now, I do #3 by "hiding" the directory offset cookies after the 2720 * d_name field in struct dirent. This is space inside d_reclen that 2721 * will be ignored by anything that doesn't know about them. 2722 * The directory offset cookies are filled in as the last 8 bytes of 2723 * each directory entry, after d_name. Someday, the userland libc 2724 * functions may be able to use these. In the meantime, it satisfies 2725 * OpenBSD's requirements for cookies being returned. 2726 * If expects the directory offset cookie for the read to be in uio_offset 2727 * and returns the one for the next entry after this directory block in 2728 * there, as well. 2729 */ 2730 APPLESTATIC int 2731 nfsrpc_readdir(vnode_t vp, struct uio *uiop, nfsuint64 *cookiep, 2732 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, 2733 int *eofp, void *stuff) 2734 { 2735 int len, left; 2736 struct dirent *dp = NULL; 2737 u_int32_t *tl; 2738 nfsquad_t cookie, ncookie; 2739 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 2740 struct nfsnode *dnp = VTONFS(vp); 2741 struct nfsvattr nfsva; 2742 struct nfsrv_descript nfsd, *nd = &nfsd; 2743 int error = 0, tlen, more_dirs = 1, blksiz = 0, bigenough = 1; 2744 int reqsize, tryformoredirs = 1, readsize, eof = 0, gotmnton = 0; 2745 u_int64_t dotfileid, dotdotfileid = 0, fakefileno = UINT64_MAX; 2746 char *cp; 2747 nfsattrbit_t attrbits, dattrbits; 2748 u_int32_t rderr, *tl2 = NULL; 2749 size_t tresid; 2750 2751 KASSERT(uiop->uio_iovcnt == 1 && 2752 (uio_uio_resid(uiop) & (DIRBLKSIZ - 1)) == 0, 2753 ("nfs readdirrpc bad uio")); 2754 2755 /* 2756 * There is no point in reading a lot more than uio_resid, however 2757 * adding one additional DIRBLKSIZ makes sense. Since uio_resid 2758 * and nm_readdirsize are both exact multiples of DIRBLKSIZ, this 2759 * will never make readsize > nm_readdirsize. 2760 */ 2761 readsize = nmp->nm_readdirsize; 2762 if (readsize > uio_uio_resid(uiop)) 2763 readsize = uio_uio_resid(uiop) + DIRBLKSIZ; 2764 2765 *attrflagp = 0; 2766 if (eofp) 2767 *eofp = 0; 2768 tresid = uio_uio_resid(uiop); 2769 cookie.lval[0] = cookiep->nfsuquad[0]; 2770 cookie.lval[1] = cookiep->nfsuquad[1]; 2771 nd->nd_mrep = NULL; 2772 2773 /* 2774 * For NFSv4, first create the "." and ".." entries. 2775 */ 2776 if (NFSHASNFSV4(nmp)) { 2777 reqsize = 6 * NFSX_UNSIGNED; 2778 NFSGETATTR_ATTRBIT(&dattrbits); 2779 NFSZERO_ATTRBIT(&attrbits); 2780 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_FILEID); 2781 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_TYPE); 2782 if (NFSISSET_ATTRBIT(&dnp->n_vattr.na_suppattr, 2783 NFSATTRBIT_MOUNTEDONFILEID)) { 2784 NFSSETBIT_ATTRBIT(&attrbits, 2785 NFSATTRBIT_MOUNTEDONFILEID); 2786 gotmnton = 1; 2787 } else { 2788 /* 2789 * Must fake it. Use the fileno, except when the 2790 * fsid is != to that of the directory. For that 2791 * case, generate a fake fileno that is not the same. 2792 */ 2793 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_FSID); 2794 gotmnton = 0; 2795 } 2796 2797 /* 2798 * Joy, oh joy. For V4 we get to hand craft '.' and '..'. 2799 */ 2800 if (uiop->uio_offset == 0) { 2801 NFSCL_REQSTART(nd, NFSPROC_LOOKUPP, vp); 2802 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2803 *tl++ = txdr_unsigned(NFSV4OP_GETFH); 2804 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2805 (void) nfsrv_putattrbit(nd, &attrbits); 2806 error = nfscl_request(nd, vp, p, cred, stuff); 2807 if (error) 2808 return (error); 2809 dotfileid = 0; /* Fake out the compiler. */ 2810 if ((nd->nd_flag & ND_NOMOREDATA) == 0) { 2811 error = nfsm_loadattr(nd, &nfsva); 2812 if (error != 0) 2813 goto nfsmout; 2814 dotfileid = nfsva.na_fileid; 2815 } 2816 if (nd->nd_repstat == 0) { 2817 NFSM_DISSECT(tl, u_int32_t *, 5 * NFSX_UNSIGNED); 2818 len = fxdr_unsigned(int, *(tl + 4)); 2819 if (len > 0 && len <= NFSX_V4FHMAX) 2820 error = nfsm_advance(nd, NFSM_RNDUP(len), -1); 2821 else 2822 error = EPERM; 2823 if (!error) { 2824 NFSM_DISSECT(tl, u_int32_t *, 2*NFSX_UNSIGNED); 2825 nfsva.na_mntonfileno = UINT64_MAX; 2826 error = nfsv4_loadattr(nd, NULL, &nfsva, NULL, 2827 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0, 2828 NULL, NULL, NULL, p, cred); 2829 if (error) { 2830 dotdotfileid = dotfileid; 2831 } else if (gotmnton) { 2832 if (nfsva.na_mntonfileno != UINT64_MAX) 2833 dotdotfileid = nfsva.na_mntonfileno; 2834 else 2835 dotdotfileid = nfsva.na_fileid; 2836 } else if (nfsva.na_filesid[0] == 2837 dnp->n_vattr.na_filesid[0] && 2838 nfsva.na_filesid[1] == 2839 dnp->n_vattr.na_filesid[1]) { 2840 dotdotfileid = nfsva.na_fileid; 2841 } else { 2842 do { 2843 fakefileno--; 2844 } while (fakefileno == 2845 nfsva.na_fileid); 2846 dotdotfileid = fakefileno; 2847 } 2848 } 2849 } else if (nd->nd_repstat == NFSERR_NOENT) { 2850 /* 2851 * Lookupp returns NFSERR_NOENT when we are 2852 * at the root, so just use the current dir. 2853 */ 2854 nd->nd_repstat = 0; 2855 dotdotfileid = dotfileid; 2856 } else { 2857 error = nd->nd_repstat; 2858 } 2859 mbuf_freem(nd->nd_mrep); 2860 if (error) 2861 return (error); 2862 nd->nd_mrep = NULL; 2863 dp = (struct dirent *)uio_iov_base(uiop); 2864 dp->d_off = 0; 2865 dp->d_type = DT_DIR; 2866 dp->d_fileno = dotfileid; 2867 dp->d_namlen = 1; 2868 *((uint64_t *)dp->d_name) = 0; /* Zero pad it. */ 2869 dp->d_name[0] = '.'; 2870 dp->d_reclen = _GENERIC_DIRSIZ(dp) + NFSX_HYPER; 2871 /* 2872 * Just make these offset cookie 0. 2873 */ 2874 tl = (u_int32_t *)&dp->d_name[8]; 2875 *tl++ = 0; 2876 *tl = 0; 2877 blksiz += dp->d_reclen; 2878 uio_uio_resid_add(uiop, -(dp->d_reclen)); 2879 uiop->uio_offset += dp->d_reclen; 2880 uio_iov_base_add(uiop, dp->d_reclen); 2881 uio_iov_len_add(uiop, -(dp->d_reclen)); 2882 dp = (struct dirent *)uio_iov_base(uiop); 2883 dp->d_off = 0; 2884 dp->d_type = DT_DIR; 2885 dp->d_fileno = dotdotfileid; 2886 dp->d_namlen = 2; 2887 *((uint64_t *)dp->d_name) = 0; 2888 dp->d_name[0] = '.'; 2889 dp->d_name[1] = '.'; 2890 dp->d_reclen = _GENERIC_DIRSIZ(dp) + NFSX_HYPER; 2891 /* 2892 * Just make these offset cookie 0. 2893 */ 2894 tl = (u_int32_t *)&dp->d_name[8]; 2895 *tl++ = 0; 2896 *tl = 0; 2897 blksiz += dp->d_reclen; 2898 uio_uio_resid_add(uiop, -(dp->d_reclen)); 2899 uiop->uio_offset += dp->d_reclen; 2900 uio_iov_base_add(uiop, dp->d_reclen); 2901 uio_iov_len_add(uiop, -(dp->d_reclen)); 2902 } 2903 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_RDATTRERROR); 2904 } else { 2905 reqsize = 5 * NFSX_UNSIGNED; 2906 } 2907 2908 2909 /* 2910 * Loop around doing readdir rpc's of size readsize. 2911 * The stopping criteria is EOF or buffer full. 2912 */ 2913 while (more_dirs && bigenough) { 2914 *attrflagp = 0; 2915 NFSCL_REQSTART(nd, NFSPROC_READDIR, vp); 2916 if (nd->nd_flag & ND_NFSV2) { 2917 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2918 *tl++ = cookie.lval[1]; 2919 *tl = txdr_unsigned(readsize); 2920 } else { 2921 NFSM_BUILD(tl, u_int32_t *, reqsize); 2922 *tl++ = cookie.lval[0]; 2923 *tl++ = cookie.lval[1]; 2924 if (cookie.qval == 0) { 2925 *tl++ = 0; 2926 *tl++ = 0; 2927 } else { 2928 NFSLOCKNODE(dnp); 2929 *tl++ = dnp->n_cookieverf.nfsuquad[0]; 2930 *tl++ = dnp->n_cookieverf.nfsuquad[1]; 2931 NFSUNLOCKNODE(dnp); 2932 } 2933 if (nd->nd_flag & ND_NFSV4) { 2934 *tl++ = txdr_unsigned(readsize); 2935 *tl = txdr_unsigned(readsize); 2936 (void) nfsrv_putattrbit(nd, &attrbits); 2937 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2938 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2939 (void) nfsrv_putattrbit(nd, &dattrbits); 2940 } else { 2941 *tl = txdr_unsigned(readsize); 2942 } 2943 } 2944 error = nfscl_request(nd, vp, p, cred, stuff); 2945 if (error) 2946 return (error); 2947 if (!(nd->nd_flag & ND_NFSV2)) { 2948 if (nd->nd_flag & ND_NFSV3) 2949 error = nfscl_postop_attr(nd, nap, attrflagp, 2950 stuff); 2951 if (!nd->nd_repstat && !error) { 2952 NFSM_DISSECT(tl, u_int32_t *, NFSX_HYPER); 2953 NFSLOCKNODE(dnp); 2954 dnp->n_cookieverf.nfsuquad[0] = *tl++; 2955 dnp->n_cookieverf.nfsuquad[1] = *tl; 2956 NFSUNLOCKNODE(dnp); 2957 } 2958 } 2959 if (nd->nd_repstat || error) { 2960 if (!error) 2961 error = nd->nd_repstat; 2962 goto nfsmout; 2963 } 2964 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2965 more_dirs = fxdr_unsigned(int, *tl); 2966 if (!more_dirs) 2967 tryformoredirs = 0; 2968 2969 /* loop through the dir entries, doctoring them to 4bsd form */ 2970 while (more_dirs && bigenough) { 2971 if (nd->nd_flag & ND_NFSV4) { 2972 NFSM_DISSECT(tl, u_int32_t *, 3*NFSX_UNSIGNED); 2973 ncookie.lval[0] = *tl++; 2974 ncookie.lval[1] = *tl++; 2975 len = fxdr_unsigned(int, *tl); 2976 } else if (nd->nd_flag & ND_NFSV3) { 2977 NFSM_DISSECT(tl, u_int32_t *, 3*NFSX_UNSIGNED); 2978 nfsva.na_fileid = fxdr_hyper(tl); 2979 tl += 2; 2980 len = fxdr_unsigned(int, *tl); 2981 } else { 2982 NFSM_DISSECT(tl, u_int32_t *, 2*NFSX_UNSIGNED); 2983 nfsva.na_fileid = fxdr_unsigned(uint64_t, 2984 *tl++); 2985 len = fxdr_unsigned(int, *tl); 2986 } 2987 if (len <= 0 || len > NFS_MAXNAMLEN) { 2988 error = EBADRPC; 2989 goto nfsmout; 2990 } 2991 tlen = roundup2(len, 8); 2992 if (tlen == len) 2993 tlen += 8; /* To ensure null termination. */ 2994 left = DIRBLKSIZ - blksiz; 2995 if (_GENERIC_DIRLEN(len) + NFSX_HYPER > left) { 2996 dp->d_reclen += left; 2997 uio_iov_base_add(uiop, left); 2998 uio_iov_len_add(uiop, -(left)); 2999 uio_uio_resid_add(uiop, -(left)); 3000 uiop->uio_offset += left; 3001 blksiz = 0; 3002 } 3003 if (_GENERIC_DIRLEN(len) + NFSX_HYPER > 3004 uio_uio_resid(uiop)) 3005 bigenough = 0; 3006 if (bigenough) { 3007 dp = (struct dirent *)uio_iov_base(uiop); 3008 dp->d_off = 0; 3009 dp->d_namlen = len; 3010 dp->d_reclen = _GENERIC_DIRLEN(len) + 3011 NFSX_HYPER; 3012 dp->d_type = DT_UNKNOWN; 3013 blksiz += dp->d_reclen; 3014 if (blksiz == DIRBLKSIZ) 3015 blksiz = 0; 3016 uio_uio_resid_add(uiop, -(DIRHDSIZ)); 3017 uiop->uio_offset += DIRHDSIZ; 3018 uio_iov_base_add(uiop, DIRHDSIZ); 3019 uio_iov_len_add(uiop, -(DIRHDSIZ)); 3020 error = nfsm_mbufuio(nd, uiop, len); 3021 if (error) 3022 goto nfsmout; 3023 cp = uio_iov_base(uiop); 3024 tlen -= len; 3025 *cp = '\0'; /* null terminate */ 3026 cp += tlen; /* points to cookie storage */ 3027 tl2 = (u_int32_t *)cp; 3028 uio_iov_base_add(uiop, (tlen + NFSX_HYPER)); 3029 uio_iov_len_add(uiop, -(tlen + NFSX_HYPER)); 3030 uio_uio_resid_add(uiop, -(tlen + NFSX_HYPER)); 3031 uiop->uio_offset += (tlen + NFSX_HYPER); 3032 } else { 3033 error = nfsm_advance(nd, NFSM_RNDUP(len), -1); 3034 if (error) 3035 goto nfsmout; 3036 } 3037 if (nd->nd_flag & ND_NFSV4) { 3038 rderr = 0; 3039 nfsva.na_mntonfileno = UINT64_MAX; 3040 error = nfsv4_loadattr(nd, NULL, &nfsva, NULL, 3041 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0, 3042 NULL, NULL, &rderr, p, cred); 3043 if (error) 3044 goto nfsmout; 3045 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 3046 } else if (nd->nd_flag & ND_NFSV3) { 3047 NFSM_DISSECT(tl, u_int32_t *, 3*NFSX_UNSIGNED); 3048 ncookie.lval[0] = *tl++; 3049 ncookie.lval[1] = *tl++; 3050 } else { 3051 NFSM_DISSECT(tl, u_int32_t *, 2*NFSX_UNSIGNED); 3052 ncookie.lval[0] = 0; 3053 ncookie.lval[1] = *tl++; 3054 } 3055 if (bigenough) { 3056 if (nd->nd_flag & ND_NFSV4) { 3057 if (rderr) { 3058 dp->d_fileno = 0; 3059 } else { 3060 if (gotmnton) { 3061 if (nfsva.na_mntonfileno != UINT64_MAX) 3062 dp->d_fileno = nfsva.na_mntonfileno; 3063 else 3064 dp->d_fileno = nfsva.na_fileid; 3065 } else if (nfsva.na_filesid[0] == 3066 dnp->n_vattr.na_filesid[0] && 3067 nfsva.na_filesid[1] == 3068 dnp->n_vattr.na_filesid[1]) { 3069 dp->d_fileno = nfsva.na_fileid; 3070 } else { 3071 do { 3072 fakefileno--; 3073 } while (fakefileno == 3074 nfsva.na_fileid); 3075 dp->d_fileno = fakefileno; 3076 } 3077 dp->d_type = vtonfs_dtype(nfsva.na_type); 3078 } 3079 } else { 3080 dp->d_fileno = nfsva.na_fileid; 3081 } 3082 *tl2++ = cookiep->nfsuquad[0] = cookie.lval[0] = 3083 ncookie.lval[0]; 3084 *tl2 = cookiep->nfsuquad[1] = cookie.lval[1] = 3085 ncookie.lval[1]; 3086 } 3087 more_dirs = fxdr_unsigned(int, *tl); 3088 } 3089 /* 3090 * If at end of rpc data, get the eof boolean 3091 */ 3092 if (!more_dirs) { 3093 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 3094 eof = fxdr_unsigned(int, *tl); 3095 if (tryformoredirs) 3096 more_dirs = !eof; 3097 if (nd->nd_flag & ND_NFSV4) { 3098 error = nfscl_postop_attr(nd, nap, attrflagp, 3099 stuff); 3100 if (error) 3101 goto nfsmout; 3102 } 3103 } 3104 mbuf_freem(nd->nd_mrep); 3105 nd->nd_mrep = NULL; 3106 } 3107 /* 3108 * Fill last record, iff any, out to a multiple of DIRBLKSIZ 3109 * by increasing d_reclen for the last record. 3110 */ 3111 if (blksiz > 0) { 3112 left = DIRBLKSIZ - blksiz; 3113 dp->d_reclen += left; 3114 uio_iov_base_add(uiop, left); 3115 uio_iov_len_add(uiop, -(left)); 3116 uio_uio_resid_add(uiop, -(left)); 3117 uiop->uio_offset += left; 3118 } 3119 3120 /* 3121 * If returning no data, assume end of file. 3122 * If not bigenough, return not end of file, since you aren't 3123 * returning all the data 3124 * Otherwise, return the eof flag from the server. 3125 */ 3126 if (eofp) { 3127 if (tresid == ((size_t)(uio_uio_resid(uiop)))) 3128 *eofp = 1; 3129 else if (!bigenough) 3130 *eofp = 0; 3131 else 3132 *eofp = eof; 3133 } 3134 3135 /* 3136 * Add extra empty records to any remaining DIRBLKSIZ chunks. 3137 */ 3138 while (uio_uio_resid(uiop) > 0 && uio_uio_resid(uiop) != tresid) { 3139 dp = (struct dirent *)uio_iov_base(uiop); 3140 dp->d_type = DT_UNKNOWN; 3141 dp->d_fileno = 0; 3142 dp->d_namlen = 0; 3143 dp->d_name[0] = '\0'; 3144 tl = (u_int32_t *)&dp->d_name[4]; 3145 *tl++ = cookie.lval[0]; 3146 *tl = cookie.lval[1]; 3147 dp->d_reclen = DIRBLKSIZ; 3148 uio_iov_base_add(uiop, DIRBLKSIZ); 3149 uio_iov_len_add(uiop, -(DIRBLKSIZ)); 3150 uio_uio_resid_add(uiop, -(DIRBLKSIZ)); 3151 uiop->uio_offset += DIRBLKSIZ; 3152 } 3153 3154 nfsmout: 3155 if (nd->nd_mrep != NULL) 3156 mbuf_freem(nd->nd_mrep); 3157 return (error); 3158 } 3159 3160 #ifndef APPLE 3161 /* 3162 * NFS V3 readdir plus RPC. Used in place of nfsrpc_readdir(). 3163 * (Also used for NFS V4 when mount flag set.) 3164 * (ditto above w.r.t. multiple of DIRBLKSIZ, etc.) 3165 */ 3166 APPLESTATIC int 3167 nfsrpc_readdirplus(vnode_t vp, struct uio *uiop, nfsuint64 *cookiep, 3168 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, 3169 int *eofp, void *stuff) 3170 { 3171 int len, left; 3172 struct dirent *dp = NULL; 3173 u_int32_t *tl; 3174 vnode_t newvp = NULLVP; 3175 struct nfsrv_descript nfsd, *nd = &nfsd; 3176 struct nameidata nami, *ndp = &nami; 3177 struct componentname *cnp = &ndp->ni_cnd; 3178 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 3179 struct nfsnode *dnp = VTONFS(vp), *np; 3180 struct nfsvattr nfsva; 3181 struct nfsfh *nfhp; 3182 nfsquad_t cookie, ncookie; 3183 int error = 0, tlen, more_dirs = 1, blksiz = 0, bigenough = 1; 3184 int attrflag, tryformoredirs = 1, eof = 0, gotmnton = 0; 3185 int isdotdot = 0, unlocknewvp = 0; 3186 u_int64_t dotfileid, dotdotfileid = 0, fakefileno = UINT64_MAX; 3187 u_int64_t fileno = 0; 3188 char *cp; 3189 nfsattrbit_t attrbits, dattrbits; 3190 size_t tresid; 3191 u_int32_t *tl2 = NULL, rderr; 3192 struct timespec dctime; 3193 3194 KASSERT(uiop->uio_iovcnt == 1 && 3195 (uio_uio_resid(uiop) & (DIRBLKSIZ - 1)) == 0, 3196 ("nfs readdirplusrpc bad uio")); 3197 timespecclear(&dctime); 3198 *attrflagp = 0; 3199 if (eofp != NULL) 3200 *eofp = 0; 3201 ndp->ni_dvp = vp; 3202 nd->nd_mrep = NULL; 3203 cookie.lval[0] = cookiep->nfsuquad[0]; 3204 cookie.lval[1] = cookiep->nfsuquad[1]; 3205 tresid = uio_uio_resid(uiop); 3206 3207 /* 3208 * For NFSv4, first create the "." and ".." entries. 3209 */ 3210 if (NFSHASNFSV4(nmp)) { 3211 NFSGETATTR_ATTRBIT(&dattrbits); 3212 NFSZERO_ATTRBIT(&attrbits); 3213 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_FILEID); 3214 if (NFSISSET_ATTRBIT(&dnp->n_vattr.na_suppattr, 3215 NFSATTRBIT_MOUNTEDONFILEID)) { 3216 NFSSETBIT_ATTRBIT(&attrbits, 3217 NFSATTRBIT_MOUNTEDONFILEID); 3218 gotmnton = 1; 3219 } else { 3220 /* 3221 * Must fake it. Use the fileno, except when the 3222 * fsid is != to that of the directory. For that 3223 * case, generate a fake fileno that is not the same. 3224 */ 3225 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_FSID); 3226 gotmnton = 0; 3227 } 3228 3229 /* 3230 * Joy, oh joy. For V4 we get to hand craft '.' and '..'. 3231 */ 3232 if (uiop->uio_offset == 0) { 3233 NFSCL_REQSTART(nd, NFSPROC_LOOKUPP, vp); 3234 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 3235 *tl++ = txdr_unsigned(NFSV4OP_GETFH); 3236 *tl = txdr_unsigned(NFSV4OP_GETATTR); 3237 (void) nfsrv_putattrbit(nd, &attrbits); 3238 error = nfscl_request(nd, vp, p, cred, stuff); 3239 if (error) 3240 return (error); 3241 dotfileid = 0; /* Fake out the compiler. */ 3242 if ((nd->nd_flag & ND_NOMOREDATA) == 0) { 3243 error = nfsm_loadattr(nd, &nfsva); 3244 if (error != 0) 3245 goto nfsmout; 3246 dctime = nfsva.na_ctime; 3247 dotfileid = nfsva.na_fileid; 3248 } 3249 if (nd->nd_repstat == 0) { 3250 NFSM_DISSECT(tl, u_int32_t *, 5 * NFSX_UNSIGNED); 3251 len = fxdr_unsigned(int, *(tl + 4)); 3252 if (len > 0 && len <= NFSX_V4FHMAX) 3253 error = nfsm_advance(nd, NFSM_RNDUP(len), -1); 3254 else 3255 error = EPERM; 3256 if (!error) { 3257 NFSM_DISSECT(tl, u_int32_t *, 2*NFSX_UNSIGNED); 3258 nfsva.na_mntonfileno = UINT64_MAX; 3259 error = nfsv4_loadattr(nd, NULL, &nfsva, NULL, 3260 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0, 3261 NULL, NULL, NULL, p, cred); 3262 if (error) { 3263 dotdotfileid = dotfileid; 3264 } else if (gotmnton) { 3265 if (nfsva.na_mntonfileno != UINT64_MAX) 3266 dotdotfileid = nfsva.na_mntonfileno; 3267 else 3268 dotdotfileid = nfsva.na_fileid; 3269 } else if (nfsva.na_filesid[0] == 3270 dnp->n_vattr.na_filesid[0] && 3271 nfsva.na_filesid[1] == 3272 dnp->n_vattr.na_filesid[1]) { 3273 dotdotfileid = nfsva.na_fileid; 3274 } else { 3275 do { 3276 fakefileno--; 3277 } while (fakefileno == 3278 nfsva.na_fileid); 3279 dotdotfileid = fakefileno; 3280 } 3281 } 3282 } else if (nd->nd_repstat == NFSERR_NOENT) { 3283 /* 3284 * Lookupp returns NFSERR_NOENT when we are 3285 * at the root, so just use the current dir. 3286 */ 3287 nd->nd_repstat = 0; 3288 dotdotfileid = dotfileid; 3289 } else { 3290 error = nd->nd_repstat; 3291 } 3292 mbuf_freem(nd->nd_mrep); 3293 if (error) 3294 return (error); 3295 nd->nd_mrep = NULL; 3296 dp = (struct dirent *)uio_iov_base(uiop); 3297 dp->d_off = 0; 3298 dp->d_type = DT_DIR; 3299 dp->d_fileno = dotfileid; 3300 dp->d_namlen = 1; 3301 *((uint64_t *)dp->d_name) = 0; /* Zero pad it. */ 3302 dp->d_name[0] = '.'; 3303 dp->d_reclen = _GENERIC_DIRSIZ(dp) + NFSX_HYPER; 3304 /* 3305 * Just make these offset cookie 0. 3306 */ 3307 tl = (u_int32_t *)&dp->d_name[8]; 3308 *tl++ = 0; 3309 *tl = 0; 3310 blksiz += dp->d_reclen; 3311 uio_uio_resid_add(uiop, -(dp->d_reclen)); 3312 uiop->uio_offset += dp->d_reclen; 3313 uio_iov_base_add(uiop, dp->d_reclen); 3314 uio_iov_len_add(uiop, -(dp->d_reclen)); 3315 dp = (struct dirent *)uio_iov_base(uiop); 3316 dp->d_off = 0; 3317 dp->d_type = DT_DIR; 3318 dp->d_fileno = dotdotfileid; 3319 dp->d_namlen = 2; 3320 *((uint64_t *)dp->d_name) = 0; 3321 dp->d_name[0] = '.'; 3322 dp->d_name[1] = '.'; 3323 dp->d_reclen = _GENERIC_DIRSIZ(dp) + NFSX_HYPER; 3324 /* 3325 * Just make these offset cookie 0. 3326 */ 3327 tl = (u_int32_t *)&dp->d_name[8]; 3328 *tl++ = 0; 3329 *tl = 0; 3330 blksiz += dp->d_reclen; 3331 uio_uio_resid_add(uiop, -(dp->d_reclen)); 3332 uiop->uio_offset += dp->d_reclen; 3333 uio_iov_base_add(uiop, dp->d_reclen); 3334 uio_iov_len_add(uiop, -(dp->d_reclen)); 3335 } 3336 NFSREADDIRPLUS_ATTRBIT(&attrbits); 3337 if (gotmnton) 3338 NFSSETBIT_ATTRBIT(&attrbits, 3339 NFSATTRBIT_MOUNTEDONFILEID); 3340 } 3341 3342 /* 3343 * Loop around doing readdir rpc's of size nm_readdirsize. 3344 * The stopping criteria is EOF or buffer full. 3345 */ 3346 while (more_dirs && bigenough) { 3347 *attrflagp = 0; 3348 NFSCL_REQSTART(nd, NFSPROC_READDIRPLUS, vp); 3349 NFSM_BUILD(tl, u_int32_t *, 6 * NFSX_UNSIGNED); 3350 *tl++ = cookie.lval[0]; 3351 *tl++ = cookie.lval[1]; 3352 if (cookie.qval == 0) { 3353 *tl++ = 0; 3354 *tl++ = 0; 3355 } else { 3356 NFSLOCKNODE(dnp); 3357 *tl++ = dnp->n_cookieverf.nfsuquad[0]; 3358 *tl++ = dnp->n_cookieverf.nfsuquad[1]; 3359 NFSUNLOCKNODE(dnp); 3360 } 3361 *tl++ = txdr_unsigned(nmp->nm_readdirsize); 3362 *tl = txdr_unsigned(nmp->nm_readdirsize); 3363 if (nd->nd_flag & ND_NFSV4) { 3364 (void) nfsrv_putattrbit(nd, &attrbits); 3365 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 3366 *tl = txdr_unsigned(NFSV4OP_GETATTR); 3367 (void) nfsrv_putattrbit(nd, &dattrbits); 3368 } 3369 error = nfscl_request(nd, vp, p, cred, stuff); 3370 if (error) 3371 return (error); 3372 if (nd->nd_flag & ND_NFSV3) 3373 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 3374 if (nd->nd_repstat || error) { 3375 if (!error) 3376 error = nd->nd_repstat; 3377 goto nfsmout; 3378 } 3379 if ((nd->nd_flag & ND_NFSV3) != 0 && *attrflagp != 0) 3380 dctime = nap->na_ctime; 3381 NFSM_DISSECT(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 3382 NFSLOCKNODE(dnp); 3383 dnp->n_cookieverf.nfsuquad[0] = *tl++; 3384 dnp->n_cookieverf.nfsuquad[1] = *tl++; 3385 NFSUNLOCKNODE(dnp); 3386 more_dirs = fxdr_unsigned(int, *tl); 3387 if (!more_dirs) 3388 tryformoredirs = 0; 3389 3390 /* loop through the dir entries, doctoring them to 4bsd form */ 3391 while (more_dirs && bigenough) { 3392 NFSM_DISSECT(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 3393 if (nd->nd_flag & ND_NFSV4) { 3394 ncookie.lval[0] = *tl++; 3395 ncookie.lval[1] = *tl++; 3396 } else { 3397 fileno = fxdr_hyper(tl); 3398 tl += 2; 3399 } 3400 len = fxdr_unsigned(int, *tl); 3401 if (len <= 0 || len > NFS_MAXNAMLEN) { 3402 error = EBADRPC; 3403 goto nfsmout; 3404 } 3405 tlen = roundup2(len, 8); 3406 if (tlen == len) 3407 tlen += 8; /* To ensure null termination. */ 3408 left = DIRBLKSIZ - blksiz; 3409 if (_GENERIC_DIRLEN(len) + NFSX_HYPER > left) { 3410 dp->d_reclen += left; 3411 uio_iov_base_add(uiop, left); 3412 uio_iov_len_add(uiop, -(left)); 3413 uio_uio_resid_add(uiop, -(left)); 3414 uiop->uio_offset += left; 3415 blksiz = 0; 3416 } 3417 if (_GENERIC_DIRLEN(len) + NFSX_HYPER > 3418 uio_uio_resid(uiop)) 3419 bigenough = 0; 3420 if (bigenough) { 3421 dp = (struct dirent *)uio_iov_base(uiop); 3422 dp->d_off = 0; 3423 dp->d_namlen = len; 3424 dp->d_reclen = _GENERIC_DIRLEN(len) + 3425 NFSX_HYPER; 3426 dp->d_type = DT_UNKNOWN; 3427 blksiz += dp->d_reclen; 3428 if (blksiz == DIRBLKSIZ) 3429 blksiz = 0; 3430 uio_uio_resid_add(uiop, -(DIRHDSIZ)); 3431 uiop->uio_offset += DIRHDSIZ; 3432 uio_iov_base_add(uiop, DIRHDSIZ); 3433 uio_iov_len_add(uiop, -(DIRHDSIZ)); 3434 cnp->cn_nameptr = uio_iov_base(uiop); 3435 cnp->cn_namelen = len; 3436 NFSCNHASHZERO(cnp); 3437 error = nfsm_mbufuio(nd, uiop, len); 3438 if (error) 3439 goto nfsmout; 3440 cp = uio_iov_base(uiop); 3441 tlen -= len; 3442 *cp = '\0'; 3443 cp += tlen; /* points to cookie storage */ 3444 tl2 = (u_int32_t *)cp; 3445 if (len == 2 && cnp->cn_nameptr[0] == '.' && 3446 cnp->cn_nameptr[1] == '.') 3447 isdotdot = 1; 3448 else 3449 isdotdot = 0; 3450 uio_iov_base_add(uiop, (tlen + NFSX_HYPER)); 3451 uio_iov_len_add(uiop, -(tlen + NFSX_HYPER)); 3452 uio_uio_resid_add(uiop, -(tlen + NFSX_HYPER)); 3453 uiop->uio_offset += (tlen + NFSX_HYPER); 3454 } else { 3455 error = nfsm_advance(nd, NFSM_RNDUP(len), -1); 3456 if (error) 3457 goto nfsmout; 3458 } 3459 nfhp = NULL; 3460 if (nd->nd_flag & ND_NFSV3) { 3461 NFSM_DISSECT(tl, u_int32_t *, 3*NFSX_UNSIGNED); 3462 ncookie.lval[0] = *tl++; 3463 ncookie.lval[1] = *tl++; 3464 attrflag = fxdr_unsigned(int, *tl); 3465 if (attrflag) { 3466 error = nfsm_loadattr(nd, &nfsva); 3467 if (error) 3468 goto nfsmout; 3469 } 3470 NFSM_DISSECT(tl,u_int32_t *,NFSX_UNSIGNED); 3471 if (*tl) { 3472 error = nfsm_getfh(nd, &nfhp); 3473 if (error) 3474 goto nfsmout; 3475 } 3476 if (!attrflag && nfhp != NULL) { 3477 FREE((caddr_t)nfhp, M_NFSFH); 3478 nfhp = NULL; 3479 } 3480 } else { 3481 rderr = 0; 3482 nfsva.na_mntonfileno = 0xffffffff; 3483 error = nfsv4_loadattr(nd, NULL, &nfsva, &nfhp, 3484 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0, 3485 NULL, NULL, &rderr, p, cred); 3486 if (error) 3487 goto nfsmout; 3488 } 3489 3490 if (bigenough) { 3491 if (nd->nd_flag & ND_NFSV4) { 3492 if (rderr) { 3493 dp->d_fileno = 0; 3494 } else if (gotmnton) { 3495 if (nfsva.na_mntonfileno != 0xffffffff) 3496 dp->d_fileno = nfsva.na_mntonfileno; 3497 else 3498 dp->d_fileno = nfsva.na_fileid; 3499 } else if (nfsva.na_filesid[0] == 3500 dnp->n_vattr.na_filesid[0] && 3501 nfsva.na_filesid[1] == 3502 dnp->n_vattr.na_filesid[1]) { 3503 dp->d_fileno = nfsva.na_fileid; 3504 } else { 3505 do { 3506 fakefileno--; 3507 } while (fakefileno == 3508 nfsva.na_fileid); 3509 dp->d_fileno = fakefileno; 3510 } 3511 } else { 3512 dp->d_fileno = fileno; 3513 } 3514 *tl2++ = cookiep->nfsuquad[0] = cookie.lval[0] = 3515 ncookie.lval[0]; 3516 *tl2 = cookiep->nfsuquad[1] = cookie.lval[1] = 3517 ncookie.lval[1]; 3518 3519 if (nfhp != NULL) { 3520 if (NFSRV_CMPFH(nfhp->nfh_fh, nfhp->nfh_len, 3521 dnp->n_fhp->nfh_fh, dnp->n_fhp->nfh_len)) { 3522 VREF(vp); 3523 newvp = vp; 3524 unlocknewvp = 0; 3525 FREE((caddr_t)nfhp, M_NFSFH); 3526 np = dnp; 3527 } else if (isdotdot != 0) { 3528 /* 3529 * Skip doing a nfscl_nget() call for "..". 3530 * There's a race between acquiring the nfs 3531 * node here and lookups that look for the 3532 * directory being read (in the parent). 3533 * It would try to get a lock on ".." here, 3534 * owning the lock on the directory being 3535 * read. Lookup will hold the lock on ".." 3536 * and try to acquire the lock on the 3537 * directory being read. 3538 * If the directory is unlocked/relocked, 3539 * then there is a LOR with the buflock 3540 * vp is relocked. 3541 */ 3542 free(nfhp, M_NFSFH); 3543 } else { 3544 error = nfscl_nget(vnode_mount(vp), vp, 3545 nfhp, cnp, p, &np, NULL, LK_EXCLUSIVE); 3546 if (!error) { 3547 newvp = NFSTOV(np); 3548 unlocknewvp = 1; 3549 } 3550 } 3551 nfhp = NULL; 3552 if (newvp != NULLVP) { 3553 error = nfscl_loadattrcache(&newvp, 3554 &nfsva, NULL, NULL, 0, 0); 3555 if (error) { 3556 if (unlocknewvp) 3557 vput(newvp); 3558 else 3559 vrele(newvp); 3560 goto nfsmout; 3561 } 3562 dp->d_type = 3563 vtonfs_dtype(np->n_vattr.na_type); 3564 ndp->ni_vp = newvp; 3565 NFSCNHASH(cnp, HASHINIT); 3566 if (cnp->cn_namelen <= NCHNAMLEN && 3567 (newvp->v_type != VDIR || 3568 dctime.tv_sec != 0)) { 3569 cache_enter_time(ndp->ni_dvp, 3570 ndp->ni_vp, cnp, 3571 &nfsva.na_ctime, 3572 newvp->v_type != VDIR ? NULL : 3573 &dctime); 3574 } 3575 if (unlocknewvp) 3576 vput(newvp); 3577 else 3578 vrele(newvp); 3579 newvp = NULLVP; 3580 } 3581 } 3582 } else if (nfhp != NULL) { 3583 FREE((caddr_t)nfhp, M_NFSFH); 3584 } 3585 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 3586 more_dirs = fxdr_unsigned(int, *tl); 3587 } 3588 /* 3589 * If at end of rpc data, get the eof boolean 3590 */ 3591 if (!more_dirs) { 3592 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 3593 eof = fxdr_unsigned(int, *tl); 3594 if (tryformoredirs) 3595 more_dirs = !eof; 3596 if (nd->nd_flag & ND_NFSV4) { 3597 error = nfscl_postop_attr(nd, nap, attrflagp, 3598 stuff); 3599 if (error) 3600 goto nfsmout; 3601 } 3602 } 3603 mbuf_freem(nd->nd_mrep); 3604 nd->nd_mrep = NULL; 3605 } 3606 /* 3607 * Fill last record, iff any, out to a multiple of DIRBLKSIZ 3608 * by increasing d_reclen for the last record. 3609 */ 3610 if (blksiz > 0) { 3611 left = DIRBLKSIZ - blksiz; 3612 dp->d_reclen += left; 3613 uio_iov_base_add(uiop, left); 3614 uio_iov_len_add(uiop, -(left)); 3615 uio_uio_resid_add(uiop, -(left)); 3616 uiop->uio_offset += left; 3617 } 3618 3619 /* 3620 * If returning no data, assume end of file. 3621 * If not bigenough, return not end of file, since you aren't 3622 * returning all the data 3623 * Otherwise, return the eof flag from the server. 3624 */ 3625 if (eofp != NULL) { 3626 if (tresid == uio_uio_resid(uiop)) 3627 *eofp = 1; 3628 else if (!bigenough) 3629 *eofp = 0; 3630 else 3631 *eofp = eof; 3632 } 3633 3634 /* 3635 * Add extra empty records to any remaining DIRBLKSIZ chunks. 3636 */ 3637 while (uio_uio_resid(uiop) > 0 && uio_uio_resid(uiop) != tresid) { 3638 dp = (struct dirent *)uio_iov_base(uiop); 3639 dp->d_type = DT_UNKNOWN; 3640 dp->d_fileno = 0; 3641 dp->d_namlen = 0; 3642 dp->d_name[0] = '\0'; 3643 tl = (u_int32_t *)&dp->d_name[4]; 3644 *tl++ = cookie.lval[0]; 3645 *tl = cookie.lval[1]; 3646 dp->d_reclen = DIRBLKSIZ; 3647 uio_iov_base_add(uiop, DIRBLKSIZ); 3648 uio_iov_len_add(uiop, -(DIRBLKSIZ)); 3649 uio_uio_resid_add(uiop, -(DIRBLKSIZ)); 3650 uiop->uio_offset += DIRBLKSIZ; 3651 } 3652 3653 nfsmout: 3654 if (nd->nd_mrep != NULL) 3655 mbuf_freem(nd->nd_mrep); 3656 return (error); 3657 } 3658 #endif /* !APPLE */ 3659 3660 /* 3661 * Nfs commit rpc 3662 */ 3663 APPLESTATIC int 3664 nfsrpc_commit(vnode_t vp, u_quad_t offset, int cnt, struct ucred *cred, 3665 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff) 3666 { 3667 u_int32_t *tl; 3668 struct nfsrv_descript nfsd, *nd = &nfsd; 3669 nfsattrbit_t attrbits; 3670 int error; 3671 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 3672 3673 *attrflagp = 0; 3674 NFSCL_REQSTART(nd, NFSPROC_COMMIT, vp); 3675 NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 3676 txdr_hyper(offset, tl); 3677 tl += 2; 3678 *tl = txdr_unsigned(cnt); 3679 if (nd->nd_flag & ND_NFSV4) { 3680 /* 3681 * And do a Getattr op. 3682 */ 3683 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 3684 *tl = txdr_unsigned(NFSV4OP_GETATTR); 3685 NFSGETATTR_ATTRBIT(&attrbits); 3686 (void) nfsrv_putattrbit(nd, &attrbits); 3687 } 3688 error = nfscl_request(nd, vp, p, cred, stuff); 3689 if (error) 3690 return (error); 3691 error = nfscl_wcc_data(nd, vp, nap, attrflagp, NULL, stuff); 3692 if (!error && !nd->nd_repstat) { 3693 NFSM_DISSECT(tl, u_int32_t *, NFSX_VERF); 3694 NFSLOCKMNT(nmp); 3695 if (NFSBCMP(nmp->nm_verf, tl, NFSX_VERF)) { 3696 NFSBCOPY(tl, nmp->nm_verf, NFSX_VERF); 3697 nd->nd_repstat = NFSERR_STALEWRITEVERF; 3698 } 3699 NFSUNLOCKMNT(nmp); 3700 if (nd->nd_flag & ND_NFSV4) 3701 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 3702 } 3703 nfsmout: 3704 if (!error && nd->nd_repstat) 3705 error = nd->nd_repstat; 3706 mbuf_freem(nd->nd_mrep); 3707 return (error); 3708 } 3709 3710 /* 3711 * NFS byte range lock rpc. 3712 * (Mostly just calls one of the three lower level RPC routines.) 3713 */ 3714 APPLESTATIC int 3715 nfsrpc_advlock(vnode_t vp, off_t size, int op, struct flock *fl, 3716 int reclaim, struct ucred *cred, NFSPROC_T *p, void *id, int flags) 3717 { 3718 struct nfscllockowner *lp; 3719 struct nfsclclient *clp; 3720 struct nfsfh *nfhp; 3721 struct nfsrv_descript nfsd, *nd = &nfsd; 3722 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 3723 u_int64_t off, len; 3724 off_t start, end; 3725 u_int32_t clidrev = 0; 3726 int error = 0, newone = 0, expireret = 0, retrycnt, donelocally; 3727 int callcnt, dorpc; 3728 3729 /* 3730 * Convert the flock structure into a start and end and do POSIX 3731 * bounds checking. 3732 */ 3733 switch (fl->l_whence) { 3734 case SEEK_SET: 3735 case SEEK_CUR: 3736 /* 3737 * Caller is responsible for adding any necessary offset 3738 * when SEEK_CUR is used. 3739 */ 3740 start = fl->l_start; 3741 off = fl->l_start; 3742 break; 3743 case SEEK_END: 3744 start = size + fl->l_start; 3745 off = size + fl->l_start; 3746 break; 3747 default: 3748 return (EINVAL); 3749 } 3750 if (start < 0) 3751 return (EINVAL); 3752 if (fl->l_len != 0) { 3753 end = start + fl->l_len - 1; 3754 if (end < start) 3755 return (EINVAL); 3756 } 3757 3758 len = fl->l_len; 3759 if (len == 0) 3760 len = NFS64BITSSET; 3761 retrycnt = 0; 3762 do { 3763 nd->nd_repstat = 0; 3764 if (op == F_GETLK) { 3765 error = nfscl_getcl(vnode_mount(vp), cred, p, 1, &clp); 3766 if (error) 3767 return (error); 3768 error = nfscl_lockt(vp, clp, off, len, fl, p, id, flags); 3769 if (!error) { 3770 clidrev = clp->nfsc_clientidrev; 3771 error = nfsrpc_lockt(nd, vp, clp, off, len, fl, cred, 3772 p, id, flags); 3773 } else if (error == -1) { 3774 error = 0; 3775 } 3776 nfscl_clientrelease(clp); 3777 } else if (op == F_UNLCK && fl->l_type == F_UNLCK) { 3778 /* 3779 * We must loop around for all lockowner cases. 3780 */ 3781 callcnt = 0; 3782 error = nfscl_getcl(vnode_mount(vp), cred, p, 1, &clp); 3783 if (error) 3784 return (error); 3785 do { 3786 error = nfscl_relbytelock(vp, off, len, cred, p, callcnt, 3787 clp, id, flags, &lp, &dorpc); 3788 /* 3789 * If it returns a NULL lp, we're done. 3790 */ 3791 if (lp == NULL) { 3792 if (callcnt == 0) 3793 nfscl_clientrelease(clp); 3794 else 3795 nfscl_releasealllocks(clp, vp, p, id, flags); 3796 return (error); 3797 } 3798 if (nmp->nm_clp != NULL) 3799 clidrev = nmp->nm_clp->nfsc_clientidrev; 3800 else 3801 clidrev = 0; 3802 /* 3803 * If the server doesn't support Posix lock semantics, 3804 * only allow locks on the entire file, since it won't 3805 * handle overlapping byte ranges. 3806 * There might still be a problem when a lock 3807 * upgrade/downgrade (read<->write) occurs, since the 3808 * server "might" expect an unlock first? 3809 */ 3810 if (dorpc && (lp->nfsl_open->nfso_posixlock || 3811 (off == 0 && len == NFS64BITSSET))) { 3812 /* 3813 * Since the lock records will go away, we must 3814 * wait for grace and delay here. 3815 */ 3816 do { 3817 error = nfsrpc_locku(nd, nmp, lp, off, len, 3818 NFSV4LOCKT_READ, cred, p, 0); 3819 if ((nd->nd_repstat == NFSERR_GRACE || 3820 nd->nd_repstat == NFSERR_DELAY) && 3821 error == 0) 3822 (void) nfs_catnap(PZERO, (int)nd->nd_repstat, 3823 "nfs_advlock"); 3824 } while ((nd->nd_repstat == NFSERR_GRACE || 3825 nd->nd_repstat == NFSERR_DELAY) && error == 0); 3826 } 3827 callcnt++; 3828 } while (error == 0 && nd->nd_repstat == 0); 3829 nfscl_releasealllocks(clp, vp, p, id, flags); 3830 } else if (op == F_SETLK) { 3831 error = nfscl_getbytelock(vp, off, len, fl->l_type, cred, p, 3832 NULL, 0, id, flags, NULL, NULL, &lp, &newone, &donelocally); 3833 if (error || donelocally) { 3834 return (error); 3835 } 3836 if (nmp->nm_clp != NULL) 3837 clidrev = nmp->nm_clp->nfsc_clientidrev; 3838 else 3839 clidrev = 0; 3840 nfhp = VTONFS(vp)->n_fhp; 3841 if (!lp->nfsl_open->nfso_posixlock && 3842 (off != 0 || len != NFS64BITSSET)) { 3843 error = EINVAL; 3844 } else { 3845 error = nfsrpc_lock(nd, nmp, vp, nfhp->nfh_fh, 3846 nfhp->nfh_len, lp, newone, reclaim, off, 3847 len, fl->l_type, cred, p, 0); 3848 } 3849 if (!error) 3850 error = nd->nd_repstat; 3851 nfscl_lockrelease(lp, error, newone); 3852 } else { 3853 error = EINVAL; 3854 } 3855 if (!error) 3856 error = nd->nd_repstat; 3857 if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 3858 error == NFSERR_STALEDONTRECOVER || 3859 error == NFSERR_STALECLIENTID || error == NFSERR_DELAY || 3860 error == NFSERR_BADSESSION) { 3861 (void) nfs_catnap(PZERO, error, "nfs_advlock"); 3862 } else if ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) 3863 && clidrev != 0) { 3864 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p); 3865 retrycnt++; 3866 } 3867 } while (error == NFSERR_GRACE || 3868 error == NFSERR_STALECLIENTID || error == NFSERR_DELAY || 3869 error == NFSERR_STALEDONTRECOVER || error == NFSERR_STALESTATEID || 3870 error == NFSERR_BADSESSION || 3871 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) && 3872 expireret == 0 && clidrev != 0 && retrycnt < 4)); 3873 if (error && retrycnt >= 4) 3874 error = EIO; 3875 return (error); 3876 } 3877 3878 /* 3879 * The lower level routine for the LockT case. 3880 */ 3881 APPLESTATIC int 3882 nfsrpc_lockt(struct nfsrv_descript *nd, vnode_t vp, 3883 struct nfsclclient *clp, u_int64_t off, u_int64_t len, struct flock *fl, 3884 struct ucred *cred, NFSPROC_T *p, void *id, int flags) 3885 { 3886 u_int32_t *tl; 3887 int error, type, size; 3888 uint8_t own[NFSV4CL_LOCKNAMELEN + NFSX_V4FHMAX]; 3889 struct nfsnode *np; 3890 struct nfsmount *nmp; 3891 struct nfsclsession *tsep; 3892 3893 nmp = VFSTONFS(vp->v_mount); 3894 NFSCL_REQSTART(nd, NFSPROC_LOCKT, vp); 3895 NFSM_BUILD(tl, u_int32_t *, 7 * NFSX_UNSIGNED); 3896 if (fl->l_type == F_RDLCK) 3897 *tl++ = txdr_unsigned(NFSV4LOCKT_READ); 3898 else 3899 *tl++ = txdr_unsigned(NFSV4LOCKT_WRITE); 3900 txdr_hyper(off, tl); 3901 tl += 2; 3902 txdr_hyper(len, tl); 3903 tl += 2; 3904 tsep = nfsmnt_mdssession(nmp); 3905 *tl++ = tsep->nfsess_clientid.lval[0]; 3906 *tl = tsep->nfsess_clientid.lval[1]; 3907 nfscl_filllockowner(id, own, flags); 3908 np = VTONFS(vp); 3909 NFSBCOPY(np->n_fhp->nfh_fh, &own[NFSV4CL_LOCKNAMELEN], 3910 np->n_fhp->nfh_len); 3911 (void)nfsm_strtom(nd, own, NFSV4CL_LOCKNAMELEN + np->n_fhp->nfh_len); 3912 error = nfscl_request(nd, vp, p, cred, NULL); 3913 if (error) 3914 return (error); 3915 if (nd->nd_repstat == 0) { 3916 fl->l_type = F_UNLCK; 3917 } else if (nd->nd_repstat == NFSERR_DENIED) { 3918 nd->nd_repstat = 0; 3919 fl->l_whence = SEEK_SET; 3920 NFSM_DISSECT(tl, u_int32_t *, 8 * NFSX_UNSIGNED); 3921 fl->l_start = fxdr_hyper(tl); 3922 tl += 2; 3923 len = fxdr_hyper(tl); 3924 tl += 2; 3925 if (len == NFS64BITSSET) 3926 fl->l_len = 0; 3927 else 3928 fl->l_len = len; 3929 type = fxdr_unsigned(int, *tl++); 3930 if (type == NFSV4LOCKT_WRITE) 3931 fl->l_type = F_WRLCK; 3932 else 3933 fl->l_type = F_RDLCK; 3934 /* 3935 * XXX For now, I have no idea what to do with the 3936 * conflicting lock_owner, so I'll just set the pid == 0 3937 * and skip over the lock_owner. 3938 */ 3939 fl->l_pid = (pid_t)0; 3940 tl += 2; 3941 size = fxdr_unsigned(int, *tl); 3942 if (size < 0 || size > NFSV4_OPAQUELIMIT) 3943 error = EBADRPC; 3944 if (!error) 3945 error = nfsm_advance(nd, NFSM_RNDUP(size), -1); 3946 } else if (nd->nd_repstat == NFSERR_STALECLIENTID) 3947 nfscl_initiate_recovery(clp); 3948 nfsmout: 3949 mbuf_freem(nd->nd_mrep); 3950 return (error); 3951 } 3952 3953 /* 3954 * Lower level function that performs the LockU RPC. 3955 */ 3956 static int 3957 nfsrpc_locku(struct nfsrv_descript *nd, struct nfsmount *nmp, 3958 struct nfscllockowner *lp, u_int64_t off, u_int64_t len, 3959 u_int32_t type, struct ucred *cred, NFSPROC_T *p, int syscred) 3960 { 3961 u_int32_t *tl; 3962 int error; 3963 3964 nfscl_reqstart(nd, NFSPROC_LOCKU, nmp, lp->nfsl_open->nfso_fh, 3965 lp->nfsl_open->nfso_fhlen, NULL, NULL); 3966 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID + 6 * NFSX_UNSIGNED); 3967 *tl++ = txdr_unsigned(type); 3968 *tl = txdr_unsigned(lp->nfsl_seqid); 3969 if (nfstest_outofseq && 3970 (arc4random() % nfstest_outofseq) == 0) 3971 *tl = txdr_unsigned(lp->nfsl_seqid + 1); 3972 tl++; 3973 if (NFSHASNFSV4N(nmp)) 3974 *tl++ = 0; 3975 else 3976 *tl++ = lp->nfsl_stateid.seqid; 3977 *tl++ = lp->nfsl_stateid.other[0]; 3978 *tl++ = lp->nfsl_stateid.other[1]; 3979 *tl++ = lp->nfsl_stateid.other[2]; 3980 txdr_hyper(off, tl); 3981 tl += 2; 3982 txdr_hyper(len, tl); 3983 if (syscred) 3984 nd->nd_flag |= ND_USEGSSNAME; 3985 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 3986 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 3987 NFSCL_INCRSEQID(lp->nfsl_seqid, nd); 3988 if (error) 3989 return (error); 3990 if (nd->nd_repstat == 0) { 3991 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID); 3992 lp->nfsl_stateid.seqid = *tl++; 3993 lp->nfsl_stateid.other[0] = *tl++; 3994 lp->nfsl_stateid.other[1] = *tl++; 3995 lp->nfsl_stateid.other[2] = *tl; 3996 } else if (nd->nd_repstat == NFSERR_STALESTATEID) 3997 nfscl_initiate_recovery(lp->nfsl_open->nfso_own->nfsow_clp); 3998 nfsmout: 3999 mbuf_freem(nd->nd_mrep); 4000 return (error); 4001 } 4002 4003 /* 4004 * The actual Lock RPC. 4005 */ 4006 APPLESTATIC int 4007 nfsrpc_lock(struct nfsrv_descript *nd, struct nfsmount *nmp, vnode_t vp, 4008 u_int8_t *nfhp, int fhlen, struct nfscllockowner *lp, int newone, 4009 int reclaim, u_int64_t off, u_int64_t len, short type, struct ucred *cred, 4010 NFSPROC_T *p, int syscred) 4011 { 4012 u_int32_t *tl; 4013 int error, size; 4014 uint8_t own[NFSV4CL_LOCKNAMELEN + NFSX_V4FHMAX]; 4015 struct nfsclsession *tsep; 4016 4017 nfscl_reqstart(nd, NFSPROC_LOCK, nmp, nfhp, fhlen, NULL, NULL); 4018 NFSM_BUILD(tl, u_int32_t *, 7 * NFSX_UNSIGNED); 4019 if (type == F_RDLCK) 4020 *tl++ = txdr_unsigned(NFSV4LOCKT_READ); 4021 else 4022 *tl++ = txdr_unsigned(NFSV4LOCKT_WRITE); 4023 *tl++ = txdr_unsigned(reclaim); 4024 txdr_hyper(off, tl); 4025 tl += 2; 4026 txdr_hyper(len, tl); 4027 tl += 2; 4028 if (newone) { 4029 *tl = newnfs_true; 4030 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID + 4031 2 * NFSX_UNSIGNED + NFSX_HYPER); 4032 *tl++ = txdr_unsigned(lp->nfsl_open->nfso_own->nfsow_seqid); 4033 if (NFSHASNFSV4N(nmp)) 4034 *tl++ = 0; 4035 else 4036 *tl++ = lp->nfsl_open->nfso_stateid.seqid; 4037 *tl++ = lp->nfsl_open->nfso_stateid.other[0]; 4038 *tl++ = lp->nfsl_open->nfso_stateid.other[1]; 4039 *tl++ = lp->nfsl_open->nfso_stateid.other[2]; 4040 *tl++ = txdr_unsigned(lp->nfsl_seqid); 4041 tsep = nfsmnt_mdssession(nmp); 4042 *tl++ = tsep->nfsess_clientid.lval[0]; 4043 *tl = tsep->nfsess_clientid.lval[1]; 4044 NFSBCOPY(lp->nfsl_owner, own, NFSV4CL_LOCKNAMELEN); 4045 NFSBCOPY(nfhp, &own[NFSV4CL_LOCKNAMELEN], fhlen); 4046 (void)nfsm_strtom(nd, own, NFSV4CL_LOCKNAMELEN + fhlen); 4047 } else { 4048 *tl = newnfs_false; 4049 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID + NFSX_UNSIGNED); 4050 if (NFSHASNFSV4N(nmp)) 4051 *tl++ = 0; 4052 else 4053 *tl++ = lp->nfsl_stateid.seqid; 4054 *tl++ = lp->nfsl_stateid.other[0]; 4055 *tl++ = lp->nfsl_stateid.other[1]; 4056 *tl++ = lp->nfsl_stateid.other[2]; 4057 *tl = txdr_unsigned(lp->nfsl_seqid); 4058 if (nfstest_outofseq && 4059 (arc4random() % nfstest_outofseq) == 0) 4060 *tl = txdr_unsigned(lp->nfsl_seqid + 1); 4061 } 4062 if (syscred) 4063 nd->nd_flag |= ND_USEGSSNAME; 4064 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, vp, p, cred, 4065 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4066 if (error) 4067 return (error); 4068 if (newone) 4069 NFSCL_INCRSEQID(lp->nfsl_open->nfso_own->nfsow_seqid, nd); 4070 NFSCL_INCRSEQID(lp->nfsl_seqid, nd); 4071 if (nd->nd_repstat == 0) { 4072 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID); 4073 lp->nfsl_stateid.seqid = *tl++; 4074 lp->nfsl_stateid.other[0] = *tl++; 4075 lp->nfsl_stateid.other[1] = *tl++; 4076 lp->nfsl_stateid.other[2] = *tl; 4077 } else if (nd->nd_repstat == NFSERR_DENIED) { 4078 NFSM_DISSECT(tl, u_int32_t *, 8 * NFSX_UNSIGNED); 4079 size = fxdr_unsigned(int, *(tl + 7)); 4080 if (size < 0 || size > NFSV4_OPAQUELIMIT) 4081 error = EBADRPC; 4082 if (!error) 4083 error = nfsm_advance(nd, NFSM_RNDUP(size), -1); 4084 } else if (nd->nd_repstat == NFSERR_STALESTATEID) 4085 nfscl_initiate_recovery(lp->nfsl_open->nfso_own->nfsow_clp); 4086 nfsmout: 4087 mbuf_freem(nd->nd_mrep); 4088 return (error); 4089 } 4090 4091 /* 4092 * nfs statfs rpc 4093 * (always called with the vp for the mount point) 4094 */ 4095 APPLESTATIC int 4096 nfsrpc_statfs(vnode_t vp, struct nfsstatfs *sbp, struct nfsfsinfo *fsp, 4097 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, 4098 void *stuff) 4099 { 4100 u_int32_t *tl = NULL; 4101 struct nfsrv_descript nfsd, *nd = &nfsd; 4102 struct nfsmount *nmp; 4103 nfsattrbit_t attrbits; 4104 int error; 4105 4106 *attrflagp = 0; 4107 nmp = VFSTONFS(vnode_mount(vp)); 4108 if (NFSHASNFSV4(nmp)) { 4109 /* 4110 * For V4, you actually do a getattr. 4111 */ 4112 NFSCL_REQSTART(nd, NFSPROC_GETATTR, vp); 4113 NFSSTATFS_GETATTRBIT(&attrbits); 4114 (void) nfsrv_putattrbit(nd, &attrbits); 4115 nd->nd_flag |= ND_USEGSSNAME; 4116 error = nfscl_request(nd, vp, p, cred, stuff); 4117 if (error) 4118 return (error); 4119 if (nd->nd_repstat == 0) { 4120 error = nfsv4_loadattr(nd, NULL, nap, NULL, NULL, 0, 4121 NULL, NULL, sbp, fsp, NULL, 0, NULL, NULL, NULL, p, 4122 cred); 4123 if (!error) { 4124 nmp->nm_fsid[0] = nap->na_filesid[0]; 4125 nmp->nm_fsid[1] = nap->na_filesid[1]; 4126 NFSSETHASSETFSID(nmp); 4127 *attrflagp = 1; 4128 } 4129 } else { 4130 error = nd->nd_repstat; 4131 } 4132 if (error) 4133 goto nfsmout; 4134 } else { 4135 NFSCL_REQSTART(nd, NFSPROC_FSSTAT, vp); 4136 error = nfscl_request(nd, vp, p, cred, stuff); 4137 if (error) 4138 return (error); 4139 if (nd->nd_flag & ND_NFSV3) { 4140 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 4141 if (error) 4142 goto nfsmout; 4143 } 4144 if (nd->nd_repstat) { 4145 error = nd->nd_repstat; 4146 goto nfsmout; 4147 } 4148 NFSM_DISSECT(tl, u_int32_t *, 4149 NFSX_STATFS(nd->nd_flag & ND_NFSV3)); 4150 } 4151 if (NFSHASNFSV3(nmp)) { 4152 sbp->sf_tbytes = fxdr_hyper(tl); tl += 2; 4153 sbp->sf_fbytes = fxdr_hyper(tl); tl += 2; 4154 sbp->sf_abytes = fxdr_hyper(tl); tl += 2; 4155 sbp->sf_tfiles = fxdr_hyper(tl); tl += 2; 4156 sbp->sf_ffiles = fxdr_hyper(tl); tl += 2; 4157 sbp->sf_afiles = fxdr_hyper(tl); tl += 2; 4158 sbp->sf_invarsec = fxdr_unsigned(u_int32_t, *tl); 4159 } else if (NFSHASNFSV4(nmp) == 0) { 4160 sbp->sf_tsize = fxdr_unsigned(u_int32_t, *tl++); 4161 sbp->sf_bsize = fxdr_unsigned(u_int32_t, *tl++); 4162 sbp->sf_blocks = fxdr_unsigned(u_int32_t, *tl++); 4163 sbp->sf_bfree = fxdr_unsigned(u_int32_t, *tl++); 4164 sbp->sf_bavail = fxdr_unsigned(u_int32_t, *tl); 4165 } 4166 nfsmout: 4167 mbuf_freem(nd->nd_mrep); 4168 return (error); 4169 } 4170 4171 /* 4172 * nfs pathconf rpc 4173 */ 4174 APPLESTATIC int 4175 nfsrpc_pathconf(vnode_t vp, struct nfsv3_pathconf *pc, 4176 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, 4177 void *stuff) 4178 { 4179 struct nfsrv_descript nfsd, *nd = &nfsd; 4180 struct nfsmount *nmp; 4181 u_int32_t *tl; 4182 nfsattrbit_t attrbits; 4183 int error; 4184 4185 *attrflagp = 0; 4186 nmp = VFSTONFS(vnode_mount(vp)); 4187 if (NFSHASNFSV4(nmp)) { 4188 /* 4189 * For V4, you actually do a getattr. 4190 */ 4191 NFSCL_REQSTART(nd, NFSPROC_GETATTR, vp); 4192 NFSPATHCONF_GETATTRBIT(&attrbits); 4193 (void) nfsrv_putattrbit(nd, &attrbits); 4194 nd->nd_flag |= ND_USEGSSNAME; 4195 error = nfscl_request(nd, vp, p, cred, stuff); 4196 if (error) 4197 return (error); 4198 if (nd->nd_repstat == 0) { 4199 error = nfsv4_loadattr(nd, NULL, nap, NULL, NULL, 0, 4200 pc, NULL, NULL, NULL, NULL, 0, NULL, NULL, NULL, p, 4201 cred); 4202 if (!error) 4203 *attrflagp = 1; 4204 } else { 4205 error = nd->nd_repstat; 4206 } 4207 } else { 4208 NFSCL_REQSTART(nd, NFSPROC_PATHCONF, vp); 4209 error = nfscl_request(nd, vp, p, cred, stuff); 4210 if (error) 4211 return (error); 4212 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 4213 if (nd->nd_repstat && !error) 4214 error = nd->nd_repstat; 4215 if (!error) { 4216 NFSM_DISSECT(tl, u_int32_t *, NFSX_V3PATHCONF); 4217 pc->pc_linkmax = fxdr_unsigned(u_int32_t, *tl++); 4218 pc->pc_namemax = fxdr_unsigned(u_int32_t, *tl++); 4219 pc->pc_notrunc = fxdr_unsigned(u_int32_t, *tl++); 4220 pc->pc_chownrestricted = 4221 fxdr_unsigned(u_int32_t, *tl++); 4222 pc->pc_caseinsensitive = 4223 fxdr_unsigned(u_int32_t, *tl++); 4224 pc->pc_casepreserving = fxdr_unsigned(u_int32_t, *tl); 4225 } 4226 } 4227 nfsmout: 4228 mbuf_freem(nd->nd_mrep); 4229 return (error); 4230 } 4231 4232 /* 4233 * nfs version 3 fsinfo rpc call 4234 */ 4235 APPLESTATIC int 4236 nfsrpc_fsinfo(vnode_t vp, struct nfsfsinfo *fsp, struct ucred *cred, 4237 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff) 4238 { 4239 u_int32_t *tl; 4240 struct nfsrv_descript nfsd, *nd = &nfsd; 4241 int error; 4242 4243 *attrflagp = 0; 4244 NFSCL_REQSTART(nd, NFSPROC_FSINFO, vp); 4245 error = nfscl_request(nd, vp, p, cred, stuff); 4246 if (error) 4247 return (error); 4248 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 4249 if (nd->nd_repstat && !error) 4250 error = nd->nd_repstat; 4251 if (!error) { 4252 NFSM_DISSECT(tl, u_int32_t *, NFSX_V3FSINFO); 4253 fsp->fs_rtmax = fxdr_unsigned(u_int32_t, *tl++); 4254 fsp->fs_rtpref = fxdr_unsigned(u_int32_t, *tl++); 4255 fsp->fs_rtmult = fxdr_unsigned(u_int32_t, *tl++); 4256 fsp->fs_wtmax = fxdr_unsigned(u_int32_t, *tl++); 4257 fsp->fs_wtpref = fxdr_unsigned(u_int32_t, *tl++); 4258 fsp->fs_wtmult = fxdr_unsigned(u_int32_t, *tl++); 4259 fsp->fs_dtpref = fxdr_unsigned(u_int32_t, *tl++); 4260 fsp->fs_maxfilesize = fxdr_hyper(tl); 4261 tl += 2; 4262 fxdr_nfsv3time(tl, &fsp->fs_timedelta); 4263 tl += 2; 4264 fsp->fs_properties = fxdr_unsigned(u_int32_t, *tl); 4265 } 4266 nfsmout: 4267 mbuf_freem(nd->nd_mrep); 4268 return (error); 4269 } 4270 4271 /* 4272 * This function performs the Renew RPC. 4273 */ 4274 APPLESTATIC int 4275 nfsrpc_renew(struct nfsclclient *clp, struct nfsclds *dsp, struct ucred *cred, 4276 NFSPROC_T *p) 4277 { 4278 u_int32_t *tl; 4279 struct nfsrv_descript nfsd; 4280 struct nfsrv_descript *nd = &nfsd; 4281 struct nfsmount *nmp; 4282 int error; 4283 struct nfssockreq *nrp; 4284 struct nfsclsession *tsep; 4285 4286 nmp = clp->nfsc_nmp; 4287 if (nmp == NULL) 4288 return (0); 4289 if (dsp == NULL) 4290 nfscl_reqstart(nd, NFSPROC_RENEW, nmp, NULL, 0, NULL, NULL); 4291 else 4292 nfscl_reqstart(nd, NFSPROC_RENEW, nmp, NULL, 0, NULL, 4293 &dsp->nfsclds_sess); 4294 if (!NFSHASNFSV4N(nmp)) { 4295 /* NFSv4.1 just uses a Sequence Op and not a Renew. */ 4296 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 4297 tsep = nfsmnt_mdssession(nmp); 4298 *tl++ = tsep->nfsess_clientid.lval[0]; 4299 *tl = tsep->nfsess_clientid.lval[1]; 4300 } 4301 nrp = NULL; 4302 if (dsp != NULL) 4303 nrp = dsp->nfsclds_sockp; 4304 if (nrp == NULL) 4305 /* If NULL, use the MDS socket. */ 4306 nrp = &nmp->nm_sockreq; 4307 nd->nd_flag |= ND_USEGSSNAME; 4308 if (dsp == NULL) 4309 error = newnfs_request(nd, nmp, NULL, nrp, NULL, p, cred, 4310 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4311 else 4312 error = newnfs_request(nd, nmp, NULL, nrp, NULL, p, cred, 4313 NFS_PROG, NFS_VER4, NULL, 1, NULL, &dsp->nfsclds_sess); 4314 if (error) 4315 return (error); 4316 error = nd->nd_repstat; 4317 mbuf_freem(nd->nd_mrep); 4318 return (error); 4319 } 4320 4321 /* 4322 * This function performs the Releaselockowner RPC. 4323 */ 4324 APPLESTATIC int 4325 nfsrpc_rellockown(struct nfsmount *nmp, struct nfscllockowner *lp, 4326 uint8_t *fh, int fhlen, struct ucred *cred, NFSPROC_T *p) 4327 { 4328 struct nfsrv_descript nfsd, *nd = &nfsd; 4329 u_int32_t *tl; 4330 int error; 4331 uint8_t own[NFSV4CL_LOCKNAMELEN + NFSX_V4FHMAX]; 4332 struct nfsclsession *tsep; 4333 4334 if (NFSHASNFSV4N(nmp)) { 4335 /* For NFSv4.1, do a FreeStateID. */ 4336 nfscl_reqstart(nd, NFSPROC_FREESTATEID, nmp, NULL, 0, NULL, 4337 NULL); 4338 nfsm_stateidtom(nd, &lp->nfsl_stateid, NFSSTATEID_PUTSTATEID); 4339 } else { 4340 nfscl_reqstart(nd, NFSPROC_RELEASELCKOWN, nmp, NULL, 0, NULL, 4341 NULL); 4342 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 4343 tsep = nfsmnt_mdssession(nmp); 4344 *tl++ = tsep->nfsess_clientid.lval[0]; 4345 *tl = tsep->nfsess_clientid.lval[1]; 4346 NFSBCOPY(lp->nfsl_owner, own, NFSV4CL_LOCKNAMELEN); 4347 NFSBCOPY(fh, &own[NFSV4CL_LOCKNAMELEN], fhlen); 4348 (void)nfsm_strtom(nd, own, NFSV4CL_LOCKNAMELEN + fhlen); 4349 } 4350 nd->nd_flag |= ND_USEGSSNAME; 4351 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 4352 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4353 if (error) 4354 return (error); 4355 error = nd->nd_repstat; 4356 mbuf_freem(nd->nd_mrep); 4357 return (error); 4358 } 4359 4360 /* 4361 * This function performs the Compound to get the mount pt FH. 4362 */ 4363 APPLESTATIC int 4364 nfsrpc_getdirpath(struct nfsmount *nmp, u_char *dirpath, struct ucred *cred, 4365 NFSPROC_T *p) 4366 { 4367 u_int32_t *tl; 4368 struct nfsrv_descript nfsd; 4369 struct nfsrv_descript *nd = &nfsd; 4370 u_char *cp, *cp2; 4371 int error, cnt, len, setnil; 4372 u_int32_t *opcntp; 4373 4374 nfscl_reqstart(nd, NFSPROC_PUTROOTFH, nmp, NULL, 0, &opcntp, NULL); 4375 cp = dirpath; 4376 cnt = 0; 4377 do { 4378 setnil = 0; 4379 while (*cp == '/') 4380 cp++; 4381 cp2 = cp; 4382 while (*cp2 != '\0' && *cp2 != '/') 4383 cp2++; 4384 if (*cp2 == '/') { 4385 setnil = 1; 4386 *cp2 = '\0'; 4387 } 4388 if (cp2 != cp) { 4389 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 4390 *tl = txdr_unsigned(NFSV4OP_LOOKUP); 4391 nfsm_strtom(nd, cp, strlen(cp)); 4392 cnt++; 4393 } 4394 if (setnil) 4395 *cp2++ = '/'; 4396 cp = cp2; 4397 } while (*cp != '\0'); 4398 if (NFSHASNFSV4N(nmp)) 4399 /* Has a Sequence Op done by nfscl_reqstart(). */ 4400 *opcntp = txdr_unsigned(3 + cnt); 4401 else 4402 *opcntp = txdr_unsigned(2 + cnt); 4403 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 4404 *tl = txdr_unsigned(NFSV4OP_GETFH); 4405 nd->nd_flag |= ND_USEGSSNAME; 4406 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 4407 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4408 if (error) 4409 return (error); 4410 if (nd->nd_repstat == 0) { 4411 NFSM_DISSECT(tl, u_int32_t *, (3 + 2 * cnt) * NFSX_UNSIGNED); 4412 tl += (2 + 2 * cnt); 4413 if ((len = fxdr_unsigned(int, *tl)) <= 0 || 4414 len > NFSX_FHMAX) { 4415 nd->nd_repstat = NFSERR_BADXDR; 4416 } else { 4417 nd->nd_repstat = nfsrv_mtostr(nd, nmp->nm_fh, len); 4418 if (nd->nd_repstat == 0) 4419 nmp->nm_fhsize = len; 4420 } 4421 } 4422 error = nd->nd_repstat; 4423 nfsmout: 4424 mbuf_freem(nd->nd_mrep); 4425 return (error); 4426 } 4427 4428 /* 4429 * This function performs the Delegreturn RPC. 4430 */ 4431 APPLESTATIC int 4432 nfsrpc_delegreturn(struct nfscldeleg *dp, struct ucred *cred, 4433 struct nfsmount *nmp, NFSPROC_T *p, int syscred) 4434 { 4435 u_int32_t *tl; 4436 struct nfsrv_descript nfsd; 4437 struct nfsrv_descript *nd = &nfsd; 4438 int error; 4439 4440 nfscl_reqstart(nd, NFSPROC_DELEGRETURN, nmp, dp->nfsdl_fh, 4441 dp->nfsdl_fhlen, NULL, NULL); 4442 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID); 4443 if (NFSHASNFSV4N(nmp)) 4444 *tl++ = 0; 4445 else 4446 *tl++ = dp->nfsdl_stateid.seqid; 4447 *tl++ = dp->nfsdl_stateid.other[0]; 4448 *tl++ = dp->nfsdl_stateid.other[1]; 4449 *tl = dp->nfsdl_stateid.other[2]; 4450 if (syscred) 4451 nd->nd_flag |= ND_USEGSSNAME; 4452 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 4453 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4454 if (error) 4455 return (error); 4456 error = nd->nd_repstat; 4457 mbuf_freem(nd->nd_mrep); 4458 return (error); 4459 } 4460 4461 /* 4462 * nfs getacl call. 4463 */ 4464 APPLESTATIC int 4465 nfsrpc_getacl(vnode_t vp, struct ucred *cred, NFSPROC_T *p, 4466 struct acl *aclp, void *stuff) 4467 { 4468 struct nfsrv_descript nfsd, *nd = &nfsd; 4469 int error; 4470 nfsattrbit_t attrbits; 4471 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 4472 4473 if (nfsrv_useacl == 0 || !NFSHASNFSV4(nmp)) 4474 return (EOPNOTSUPP); 4475 NFSCL_REQSTART(nd, NFSPROC_GETACL, vp); 4476 NFSZERO_ATTRBIT(&attrbits); 4477 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_ACL); 4478 (void) nfsrv_putattrbit(nd, &attrbits); 4479 error = nfscl_request(nd, vp, p, cred, stuff); 4480 if (error) 4481 return (error); 4482 if (!nd->nd_repstat) 4483 error = nfsv4_loadattr(nd, vp, NULL, NULL, NULL, 0, NULL, 4484 NULL, NULL, NULL, aclp, 0, NULL, NULL, NULL, p, cred); 4485 else 4486 error = nd->nd_repstat; 4487 mbuf_freem(nd->nd_mrep); 4488 return (error); 4489 } 4490 4491 /* 4492 * nfs setacl call. 4493 */ 4494 APPLESTATIC int 4495 nfsrpc_setacl(vnode_t vp, struct ucred *cred, NFSPROC_T *p, 4496 struct acl *aclp, void *stuff) 4497 { 4498 int error; 4499 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 4500 4501 if (nfsrv_useacl == 0 || !NFSHASNFSV4(nmp)) 4502 return (EOPNOTSUPP); 4503 error = nfsrpc_setattr(vp, NULL, aclp, cred, p, NULL, NULL, stuff); 4504 return (error); 4505 } 4506 4507 /* 4508 * nfs setacl call. 4509 */ 4510 static int 4511 nfsrpc_setaclrpc(vnode_t vp, struct ucred *cred, NFSPROC_T *p, 4512 struct acl *aclp, nfsv4stateid_t *stateidp, void *stuff) 4513 { 4514 struct nfsrv_descript nfsd, *nd = &nfsd; 4515 int error; 4516 nfsattrbit_t attrbits; 4517 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 4518 4519 if (!NFSHASNFSV4(nmp)) 4520 return (EOPNOTSUPP); 4521 NFSCL_REQSTART(nd, NFSPROC_SETACL, vp); 4522 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID); 4523 NFSZERO_ATTRBIT(&attrbits); 4524 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_ACL); 4525 (void) nfsv4_fillattr(nd, vnode_mount(vp), vp, aclp, NULL, NULL, 0, 4526 &attrbits, NULL, NULL, 0, 0, 0, 0, (uint64_t)0); 4527 error = nfscl_request(nd, vp, p, cred, stuff); 4528 if (error) 4529 return (error); 4530 /* Don't care about the pre/postop attributes */ 4531 mbuf_freem(nd->nd_mrep); 4532 return (nd->nd_repstat); 4533 } 4534 4535 /* 4536 * Do the NFSv4.1 Exchange ID. 4537 */ 4538 int 4539 nfsrpc_exchangeid(struct nfsmount *nmp, struct nfsclclient *clp, 4540 struct nfssockreq *nrp, uint32_t exchflags, struct nfsclds **dspp, 4541 struct ucred *cred, NFSPROC_T *p) 4542 { 4543 uint32_t *tl, v41flags; 4544 struct nfsrv_descript nfsd; 4545 struct nfsrv_descript *nd = &nfsd; 4546 struct nfsclds *dsp; 4547 struct timespec verstime; 4548 int error, len; 4549 4550 *dspp = NULL; 4551 nfscl_reqstart(nd, NFSPROC_EXCHANGEID, nmp, NULL, 0, NULL, NULL); 4552 NFSM_BUILD(tl, uint32_t *, 2 * NFSX_UNSIGNED); 4553 *tl++ = txdr_unsigned(nfsboottime.tv_sec); /* Client owner */ 4554 *tl = txdr_unsigned(clp->nfsc_rev); 4555 (void) nfsm_strtom(nd, clp->nfsc_id, clp->nfsc_idlen); 4556 4557 NFSM_BUILD(tl, uint32_t *, 3 * NFSX_UNSIGNED); 4558 *tl++ = txdr_unsigned(exchflags); 4559 *tl++ = txdr_unsigned(NFSV4EXCH_SP4NONE); 4560 4561 /* Set the implementation id4 */ 4562 *tl = txdr_unsigned(1); 4563 (void) nfsm_strtom(nd, "freebsd.org", strlen("freebsd.org")); 4564 (void) nfsm_strtom(nd, version, strlen(version)); 4565 NFSM_BUILD(tl, uint32_t *, NFSX_V4TIME); 4566 verstime.tv_sec = 1293840000; /* Jan 1, 2011 */ 4567 verstime.tv_nsec = 0; 4568 txdr_nfsv4time(&verstime, tl); 4569 nd->nd_flag |= ND_USEGSSNAME; 4570 error = newnfs_request(nd, nmp, NULL, nrp, NULL, p, cred, 4571 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4572 NFSCL_DEBUG(1, "exchangeid err=%d reps=%d\n", error, 4573 (int)nd->nd_repstat); 4574 if (error != 0) 4575 return (error); 4576 if (nd->nd_repstat == 0) { 4577 NFSM_DISSECT(tl, uint32_t *, 6 * NFSX_UNSIGNED + NFSX_HYPER); 4578 len = fxdr_unsigned(int, *(tl + 7)); 4579 if (len < 0 || len > NFSV4_OPAQUELIMIT) { 4580 error = NFSERR_BADXDR; 4581 goto nfsmout; 4582 } 4583 dsp = malloc(sizeof(struct nfsclds) + len + 1, M_NFSCLDS, 4584 M_WAITOK | M_ZERO); 4585 dsp->nfsclds_expire = NFSD_MONOSEC + clp->nfsc_renew; 4586 dsp->nfsclds_servownlen = len; 4587 dsp->nfsclds_sess.nfsess_clientid.lval[0] = *tl++; 4588 dsp->nfsclds_sess.nfsess_clientid.lval[1] = *tl++; 4589 dsp->nfsclds_sess.nfsess_sequenceid = 4590 fxdr_unsigned(uint32_t, *tl++); 4591 v41flags = fxdr_unsigned(uint32_t, *tl); 4592 if ((v41flags & NFSV4EXCH_USEPNFSMDS) != 0 && 4593 NFSHASPNFSOPT(nmp)) { 4594 NFSCL_DEBUG(1, "set PNFS\n"); 4595 NFSLOCKMNT(nmp); 4596 nmp->nm_state |= NFSSTA_PNFS; 4597 NFSUNLOCKMNT(nmp); 4598 dsp->nfsclds_flags |= NFSCLDS_MDS; 4599 } 4600 if ((v41flags & NFSV4EXCH_USEPNFSDS) != 0) 4601 dsp->nfsclds_flags |= NFSCLDS_DS; 4602 if (len > 0) 4603 nd->nd_repstat = nfsrv_mtostr(nd, 4604 dsp->nfsclds_serverown, len); 4605 if (nd->nd_repstat == 0) { 4606 mtx_init(&dsp->nfsclds_mtx, "nfsds", NULL, MTX_DEF); 4607 mtx_init(&dsp->nfsclds_sess.nfsess_mtx, "nfssession", 4608 NULL, MTX_DEF); 4609 nfscl_initsessionslots(&dsp->nfsclds_sess); 4610 *dspp = dsp; 4611 } else 4612 free(dsp, M_NFSCLDS); 4613 } 4614 error = nd->nd_repstat; 4615 nfsmout: 4616 mbuf_freem(nd->nd_mrep); 4617 return (error); 4618 } 4619 4620 /* 4621 * Do the NFSv4.1 Create Session. 4622 */ 4623 int 4624 nfsrpc_createsession(struct nfsmount *nmp, struct nfsclsession *sep, 4625 struct nfssockreq *nrp, uint32_t sequenceid, int mds, struct ucred *cred, 4626 NFSPROC_T *p) 4627 { 4628 uint32_t crflags, maxval, *tl; 4629 struct nfsrv_descript nfsd; 4630 struct nfsrv_descript *nd = &nfsd; 4631 int error, irdcnt; 4632 4633 nfscl_reqstart(nd, NFSPROC_CREATESESSION, nmp, NULL, 0, NULL, NULL); 4634 NFSM_BUILD(tl, uint32_t *, 4 * NFSX_UNSIGNED); 4635 *tl++ = sep->nfsess_clientid.lval[0]; 4636 *tl++ = sep->nfsess_clientid.lval[1]; 4637 *tl++ = txdr_unsigned(sequenceid); 4638 crflags = (NFSMNT_RDONLY(nmp->nm_mountp) ? 0 : NFSV4CRSESS_PERSIST); 4639 if (nfscl_enablecallb != 0 && nfs_numnfscbd > 0 && mds != 0) 4640 crflags |= NFSV4CRSESS_CONNBACKCHAN; 4641 *tl = txdr_unsigned(crflags); 4642 4643 /* Fill in fore channel attributes. */ 4644 NFSM_BUILD(tl, uint32_t *, 7 * NFSX_UNSIGNED); 4645 *tl++ = 0; /* Header pad size */ 4646 *tl++ = txdr_unsigned(nmp->nm_wsize + NFS_MAXXDR);/* Max request size */ 4647 *tl++ = txdr_unsigned(nmp->nm_rsize + NFS_MAXXDR);/* Max reply size */ 4648 *tl++ = txdr_unsigned(4096); /* Max response size cached */ 4649 *tl++ = txdr_unsigned(20); /* Max operations */ 4650 *tl++ = txdr_unsigned(64); /* Max slots */ 4651 *tl = 0; /* No rdma ird */ 4652 4653 /* Fill in back channel attributes. */ 4654 NFSM_BUILD(tl, uint32_t *, 7 * NFSX_UNSIGNED); 4655 *tl++ = 0; /* Header pad size */ 4656 *tl++ = txdr_unsigned(10000); /* Max request size */ 4657 *tl++ = txdr_unsigned(10000); /* Max response size */ 4658 *tl++ = txdr_unsigned(4096); /* Max response size cached */ 4659 *tl++ = txdr_unsigned(4); /* Max operations */ 4660 *tl++ = txdr_unsigned(NFSV4_CBSLOTS); /* Max slots */ 4661 *tl = 0; /* No rdma ird */ 4662 4663 NFSM_BUILD(tl, uint32_t *, 8 * NFSX_UNSIGNED); 4664 *tl++ = txdr_unsigned(NFS_CALLBCKPROG); /* Call back prog # */ 4665 4666 /* Allow AUTH_SYS callbacks as uid, gid == 0. */ 4667 *tl++ = txdr_unsigned(1); /* Auth_sys only */ 4668 *tl++ = txdr_unsigned(AUTH_SYS); /* AUTH_SYS type */ 4669 *tl++ = txdr_unsigned(nfsboottime.tv_sec); /* time stamp */ 4670 *tl++ = 0; /* Null machine name */ 4671 *tl++ = 0; /* Uid == 0 */ 4672 *tl++ = 0; /* Gid == 0 */ 4673 *tl = 0; /* No additional gids */ 4674 nd->nd_flag |= ND_USEGSSNAME; 4675 error = newnfs_request(nd, nmp, NULL, nrp, NULL, p, cred, NFS_PROG, 4676 NFS_VER4, NULL, 1, NULL, NULL); 4677 if (error != 0) 4678 return (error); 4679 if (nd->nd_repstat == 0) { 4680 NFSM_DISSECT(tl, uint32_t *, NFSX_V4SESSIONID + 4681 2 * NFSX_UNSIGNED); 4682 bcopy(tl, sep->nfsess_sessionid, NFSX_V4SESSIONID); 4683 tl += NFSX_V4SESSIONID / NFSX_UNSIGNED; 4684 sep->nfsess_sequenceid = fxdr_unsigned(uint32_t, *tl++); 4685 crflags = fxdr_unsigned(uint32_t, *tl); 4686 if ((crflags & NFSV4CRSESS_PERSIST) != 0 && mds != 0) { 4687 NFSLOCKMNT(nmp); 4688 nmp->nm_state |= NFSSTA_SESSPERSIST; 4689 NFSUNLOCKMNT(nmp); 4690 } 4691 4692 /* Get the fore channel slot count. */ 4693 NFSM_DISSECT(tl, uint32_t *, 7 * NFSX_UNSIGNED); 4694 tl++; /* Skip the header pad size. */ 4695 4696 /* Make sure nm_wsize is small enough. */ 4697 maxval = fxdr_unsigned(uint32_t, *tl++); 4698 while (maxval < nmp->nm_wsize + NFS_MAXXDR) { 4699 if (nmp->nm_wsize > 8096) 4700 nmp->nm_wsize /= 2; 4701 else 4702 break; 4703 } 4704 4705 /* Make sure nm_rsize is small enough. */ 4706 maxval = fxdr_unsigned(uint32_t, *tl++); 4707 while (maxval < nmp->nm_rsize + NFS_MAXXDR) { 4708 if (nmp->nm_rsize > 8096) 4709 nmp->nm_rsize /= 2; 4710 else 4711 break; 4712 } 4713 4714 sep->nfsess_maxcache = fxdr_unsigned(int, *tl++); 4715 tl++; 4716 sep->nfsess_foreslots = fxdr_unsigned(uint16_t, *tl++); 4717 NFSCL_DEBUG(4, "fore slots=%d\n", (int)sep->nfsess_foreslots); 4718 irdcnt = fxdr_unsigned(int, *tl); 4719 if (irdcnt > 0) 4720 NFSM_DISSECT(tl, uint32_t *, irdcnt * NFSX_UNSIGNED); 4721 4722 /* and the back channel slot count. */ 4723 NFSM_DISSECT(tl, uint32_t *, 7 * NFSX_UNSIGNED); 4724 tl += 5; 4725 sep->nfsess_backslots = fxdr_unsigned(uint16_t, *tl); 4726 NFSCL_DEBUG(4, "back slots=%d\n", (int)sep->nfsess_backslots); 4727 } 4728 error = nd->nd_repstat; 4729 nfsmout: 4730 mbuf_freem(nd->nd_mrep); 4731 return (error); 4732 } 4733 4734 /* 4735 * Do the NFSv4.1 Destroy Session. 4736 */ 4737 int 4738 nfsrpc_destroysession(struct nfsmount *nmp, struct nfsclclient *clp, 4739 struct ucred *cred, NFSPROC_T *p) 4740 { 4741 uint32_t *tl; 4742 struct nfsrv_descript nfsd; 4743 struct nfsrv_descript *nd = &nfsd; 4744 int error; 4745 struct nfsclsession *tsep; 4746 4747 nfscl_reqstart(nd, NFSPROC_DESTROYSESSION, nmp, NULL, 0, NULL, NULL); 4748 NFSM_BUILD(tl, uint32_t *, NFSX_V4SESSIONID); 4749 tsep = nfsmnt_mdssession(nmp); 4750 bcopy(tsep->nfsess_sessionid, tl, NFSX_V4SESSIONID); 4751 nd->nd_flag |= ND_USEGSSNAME; 4752 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 4753 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4754 if (error != 0) 4755 return (error); 4756 error = nd->nd_repstat; 4757 mbuf_freem(nd->nd_mrep); 4758 return (error); 4759 } 4760 4761 /* 4762 * Do the NFSv4.1 Destroy Client. 4763 */ 4764 int 4765 nfsrpc_destroyclient(struct nfsmount *nmp, struct nfsclclient *clp, 4766 struct ucred *cred, NFSPROC_T *p) 4767 { 4768 uint32_t *tl; 4769 struct nfsrv_descript nfsd; 4770 struct nfsrv_descript *nd = &nfsd; 4771 int error; 4772 struct nfsclsession *tsep; 4773 4774 nfscl_reqstart(nd, NFSPROC_DESTROYCLIENT, nmp, NULL, 0, NULL, NULL); 4775 NFSM_BUILD(tl, uint32_t *, 2 * NFSX_UNSIGNED); 4776 tsep = nfsmnt_mdssession(nmp); 4777 *tl++ = tsep->nfsess_clientid.lval[0]; 4778 *tl = tsep->nfsess_clientid.lval[1]; 4779 nd->nd_flag |= ND_USEGSSNAME; 4780 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 4781 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4782 if (error != 0) 4783 return (error); 4784 error = nd->nd_repstat; 4785 mbuf_freem(nd->nd_mrep); 4786 return (error); 4787 } 4788 4789 /* 4790 * Do the NFSv4.1 LayoutGet. 4791 */ 4792 int 4793 nfsrpc_layoutget(struct nfsmount *nmp, uint8_t *fhp, int fhlen, int iomode, 4794 uint64_t offset, uint64_t len, uint64_t minlen, int layoutlen, 4795 nfsv4stateid_t *stateidp, int *retonclosep, struct nfsclflayouthead *flhp, 4796 struct ucred *cred, NFSPROC_T *p, void *stuff) 4797 { 4798 uint32_t *tl; 4799 struct nfsrv_descript nfsd, *nd = &nfsd; 4800 struct nfsfh *nfhp; 4801 struct nfsclflayout *flp, *prevflp, *tflp; 4802 int cnt, error, gotiomode, fhcnt, nfhlen, i, j; 4803 uint8_t *cp; 4804 uint64_t retlen; 4805 4806 flp = NULL; 4807 gotiomode = -1; 4808 nfscl_reqstart(nd, NFSPROC_LAYOUTGET, nmp, fhp, fhlen, NULL, NULL); 4809 NFSM_BUILD(tl, uint32_t *, 4 * NFSX_UNSIGNED + 3 * NFSX_HYPER + 4810 NFSX_STATEID); 4811 *tl++ = newnfs_false; /* Don't signal availability. */ 4812 *tl++ = txdr_unsigned(NFSLAYOUT_NFSV4_1_FILES); 4813 *tl++ = txdr_unsigned(iomode); 4814 txdr_hyper(offset, tl); 4815 tl += 2; 4816 txdr_hyper(len, tl); 4817 tl += 2; 4818 txdr_hyper(minlen, tl); 4819 tl += 2; 4820 *tl++ = txdr_unsigned(stateidp->seqid); 4821 NFSCL_DEBUG(4, "layget seq=%d\n", (int)stateidp->seqid); 4822 *tl++ = stateidp->other[0]; 4823 *tl++ = stateidp->other[1]; 4824 *tl++ = stateidp->other[2]; 4825 *tl = txdr_unsigned(layoutlen); 4826 nd->nd_flag |= ND_USEGSSNAME; 4827 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 4828 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4829 if (error != 0) 4830 return (error); 4831 if (nd->nd_repstat == 0) { 4832 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED + NFSX_STATEID); 4833 if (*tl++ != 0) 4834 *retonclosep = 1; 4835 else 4836 *retonclosep = 0; 4837 stateidp->seqid = fxdr_unsigned(uint32_t, *tl++); 4838 NFSCL_DEBUG(4, "retoncls=%d stseq=%d\n", *retonclosep, 4839 (int)stateidp->seqid); 4840 stateidp->other[0] = *tl++; 4841 stateidp->other[1] = *tl++; 4842 stateidp->other[2] = *tl++; 4843 cnt = fxdr_unsigned(int, *tl); 4844 NFSCL_DEBUG(4, "layg cnt=%d\n", cnt); 4845 if (cnt <= 0 || cnt > 10000) { 4846 /* Don't accept more than 10000 layouts in reply. */ 4847 error = NFSERR_BADXDR; 4848 goto nfsmout; 4849 } 4850 for (i = 0; i < cnt; i++) { 4851 /* Dissect all the way to the file handle cnt. */ 4852 NFSM_DISSECT(tl, uint32_t *, 3 * NFSX_HYPER + 4853 6 * NFSX_UNSIGNED + NFSX_V4DEVICEID); 4854 fhcnt = fxdr_unsigned(int, *(tl + 11 + 4855 NFSX_V4DEVICEID / NFSX_UNSIGNED)); 4856 NFSCL_DEBUG(4, "fhcnt=%d\n", fhcnt); 4857 if (fhcnt < 0 || fhcnt > 100) { 4858 /* Don't accept more than 100 file handles. */ 4859 error = NFSERR_BADXDR; 4860 goto nfsmout; 4861 } 4862 if (fhcnt > 1) 4863 flp = malloc(sizeof(*flp) + (fhcnt - 1) * 4864 sizeof(struct nfsfh *), 4865 M_NFSFLAYOUT, M_WAITOK); 4866 else 4867 flp = malloc(sizeof(*flp), 4868 M_NFSFLAYOUT, M_WAITOK); 4869 flp->nfsfl_flags = 0; 4870 flp->nfsfl_fhcnt = 0; 4871 flp->nfsfl_devp = NULL; 4872 flp->nfsfl_off = fxdr_hyper(tl); tl += 2; 4873 retlen = fxdr_hyper(tl); tl += 2; 4874 if (flp->nfsfl_off + retlen < flp->nfsfl_off) 4875 flp->nfsfl_end = UINT64_MAX - flp->nfsfl_off; 4876 else 4877 flp->nfsfl_end = flp->nfsfl_off + retlen; 4878 flp->nfsfl_iomode = fxdr_unsigned(int, *tl++); 4879 if (gotiomode == -1) 4880 gotiomode = flp->nfsfl_iomode; 4881 NFSCL_DEBUG(4, "layg reqiom=%d retiom=%d\n", iomode, 4882 (int)flp->nfsfl_iomode); 4883 if (fxdr_unsigned(int, *tl++) != 4884 NFSLAYOUT_NFSV4_1_FILES) { 4885 printf("NFSv4.1: got non-files layout\n"); 4886 error = NFSERR_BADXDR; 4887 goto nfsmout; 4888 } 4889 NFSBCOPY(++tl, flp->nfsfl_dev, NFSX_V4DEVICEID); 4890 tl += (NFSX_V4DEVICEID / NFSX_UNSIGNED); 4891 flp->nfsfl_util = fxdr_unsigned(uint32_t, *tl++); 4892 NFSCL_DEBUG(4, "flutil=0x%x\n", flp->nfsfl_util); 4893 flp->nfsfl_stripe1 = fxdr_unsigned(uint32_t, *tl++); 4894 flp->nfsfl_patoff = fxdr_hyper(tl); tl += 2; 4895 if (fxdr_unsigned(int, *tl) != fhcnt) { 4896 printf("EEK! bad fhcnt\n"); 4897 error = NFSERR_BADXDR; 4898 goto nfsmout; 4899 } 4900 for (j = 0; j < fhcnt; j++) { 4901 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 4902 nfhlen = fxdr_unsigned(int, *tl); 4903 if (nfhlen <= 0 || nfhlen > NFSX_V4FHMAX) { 4904 error = NFSERR_BADXDR; 4905 goto nfsmout; 4906 } 4907 nfhp = malloc(sizeof(*nfhp) + nfhlen - 1, 4908 M_NFSFH, M_WAITOK); 4909 flp->nfsfl_fh[j] = nfhp; 4910 flp->nfsfl_fhcnt++; 4911 nfhp->nfh_len = nfhlen; 4912 NFSM_DISSECT(cp, uint8_t *, NFSM_RNDUP(nfhlen)); 4913 NFSBCOPY(cp, nfhp->nfh_fh, nfhlen); 4914 } 4915 if (flp->nfsfl_iomode == gotiomode) { 4916 /* Keep the list in increasing offset order. */ 4917 tflp = LIST_FIRST(flhp); 4918 prevflp = NULL; 4919 while (tflp != NULL && 4920 tflp->nfsfl_off < flp->nfsfl_off) { 4921 prevflp = tflp; 4922 tflp = LIST_NEXT(tflp, nfsfl_list); 4923 } 4924 if (prevflp == NULL) 4925 LIST_INSERT_HEAD(flhp, flp, nfsfl_list); 4926 else 4927 LIST_INSERT_AFTER(prevflp, flp, 4928 nfsfl_list); 4929 } else { 4930 printf("nfscl_layoutget(): got wrong iomode\n"); 4931 nfscl_freeflayout(flp); 4932 } 4933 flp = NULL; 4934 } 4935 } 4936 if (nd->nd_repstat != 0 && error == 0) 4937 error = nd->nd_repstat; 4938 nfsmout: 4939 if (error != 0 && flp != NULL) 4940 nfscl_freeflayout(flp); 4941 mbuf_freem(nd->nd_mrep); 4942 return (error); 4943 } 4944 4945 /* 4946 * Do the NFSv4.1 Get Device Info. 4947 */ 4948 int 4949 nfsrpc_getdeviceinfo(struct nfsmount *nmp, uint8_t *deviceid, int layouttype, 4950 uint32_t *notifybitsp, struct nfscldevinfo **ndip, struct ucred *cred, 4951 NFSPROC_T *p) 4952 { 4953 uint32_t cnt, *tl; 4954 struct nfsrv_descript nfsd; 4955 struct nfsrv_descript *nd = &nfsd; 4956 struct sockaddr_storage ss; 4957 struct nfsclds *dsp = NULL, **dspp; 4958 struct nfscldevinfo *ndi; 4959 int addrcnt, bitcnt, error, i, isudp, j, pos, safilled, stripecnt; 4960 uint8_t stripeindex; 4961 4962 *ndip = NULL; 4963 ndi = NULL; 4964 nfscl_reqstart(nd, NFSPROC_GETDEVICEINFO, nmp, NULL, 0, NULL, NULL); 4965 NFSM_BUILD(tl, uint32_t *, NFSX_V4DEVICEID + 3 * NFSX_UNSIGNED); 4966 NFSBCOPY(deviceid, tl, NFSX_V4DEVICEID); 4967 tl += (NFSX_V4DEVICEID / NFSX_UNSIGNED); 4968 *tl++ = txdr_unsigned(layouttype); 4969 *tl++ = txdr_unsigned(100000); 4970 if (notifybitsp != NULL && *notifybitsp != 0) { 4971 *tl = txdr_unsigned(1); /* One word of bits. */ 4972 NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED); 4973 *tl = txdr_unsigned(*notifybitsp); 4974 } else 4975 *tl = txdr_unsigned(0); 4976 nd->nd_flag |= ND_USEGSSNAME; 4977 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 4978 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4979 if (error != 0) 4980 return (error); 4981 if (nd->nd_repstat == 0) { 4982 NFSM_DISSECT(tl, uint32_t *, 3 * NFSX_UNSIGNED); 4983 if (layouttype != fxdr_unsigned(int, *tl++)) 4984 printf("EEK! devinfo layout type not same!\n"); 4985 stripecnt = fxdr_unsigned(int, *++tl); 4986 NFSCL_DEBUG(4, "stripecnt=%d\n", stripecnt); 4987 if (stripecnt < 1 || stripecnt > 4096) { 4988 printf("NFS devinfo stripecnt %d: out of range\n", 4989 stripecnt); 4990 error = NFSERR_BADXDR; 4991 goto nfsmout; 4992 } 4993 NFSM_DISSECT(tl, uint32_t *, (stripecnt + 1) * NFSX_UNSIGNED); 4994 addrcnt = fxdr_unsigned(int, *(tl + stripecnt)); 4995 NFSCL_DEBUG(4, "addrcnt=%d\n", addrcnt); 4996 if (addrcnt < 1 || addrcnt > 128) { 4997 printf("NFS devinfo addrcnt %d: out of range\n", 4998 addrcnt); 4999 error = NFSERR_BADXDR; 5000 goto nfsmout; 5001 } 5002 5003 /* 5004 * Now we know how many stripe indices and addresses, so 5005 * we can allocate the structure the correct size. 5006 */ 5007 i = (stripecnt * sizeof(uint8_t)) / sizeof(struct nfsclds *) 5008 + 1; 5009 NFSCL_DEBUG(4, "stripeindices=%d\n", i); 5010 ndi = malloc(sizeof(*ndi) + (addrcnt + i) * 5011 sizeof(struct nfsclds *), M_NFSDEVINFO, M_WAITOK | M_ZERO); 5012 NFSBCOPY(deviceid, ndi->nfsdi_deviceid, NFSX_V4DEVICEID); 5013 ndi->nfsdi_refcnt = 0; 5014 ndi->nfsdi_stripecnt = stripecnt; 5015 ndi->nfsdi_addrcnt = addrcnt; 5016 /* Fill in the stripe indices. */ 5017 for (i = 0; i < stripecnt; i++) { 5018 stripeindex = fxdr_unsigned(uint8_t, *tl++); 5019 NFSCL_DEBUG(4, "stripeind=%d\n", stripeindex); 5020 if (stripeindex >= addrcnt) { 5021 printf("NFS devinfo stripeindex %d: too big\n", 5022 (int)stripeindex); 5023 error = NFSERR_BADXDR; 5024 goto nfsmout; 5025 } 5026 nfsfldi_setstripeindex(ndi, i, stripeindex); 5027 } 5028 5029 /* Now, dissect the server address(es). */ 5030 safilled = 0; 5031 for (i = 0; i < addrcnt; i++) { 5032 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 5033 cnt = fxdr_unsigned(uint32_t, *tl); 5034 if (cnt == 0) { 5035 printf("NFS devinfo 0 len addrlist\n"); 5036 error = NFSERR_BADXDR; 5037 goto nfsmout; 5038 } 5039 dspp = nfsfldi_addr(ndi, i); 5040 pos = arc4random() % cnt; /* Choose one. */ 5041 safilled = 0; 5042 for (j = 0; j < cnt; j++) { 5043 error = nfsv4_getipaddr(nd, &ss, &isudp); 5044 if (error != 0 && error != EPERM) { 5045 error = NFSERR_BADXDR; 5046 goto nfsmout; 5047 } 5048 if (error == 0 && isudp == 0) { 5049 /* 5050 * The algorithm is: 5051 * - use "pos" entry if it is of the 5052 * same af_family or none of them 5053 * is of the same af_family 5054 * else 5055 * - use the first one of the same 5056 * af_family. 5057 */ 5058 if ((safilled == 0 && ss.ss_family == 5059 nmp->nm_nam->sa_family) || 5060 (j == pos && 5061 (safilled == 0 || ss.ss_family == 5062 nmp->nm_nam->sa_family)) || 5063 (safilled == 1 && ss.ss_family == 5064 nmp->nm_nam->sa_family)) { 5065 error = nfsrpc_fillsa(nmp, &ss, 5066 &dsp, p); 5067 if (error == 0) { 5068 *dspp = dsp; 5069 if (ss.ss_family == 5070 nmp->nm_nam->sa_family) 5071 safilled = 2; 5072 else 5073 safilled = 1; 5074 } 5075 } 5076 } 5077 } 5078 if (safilled == 0) 5079 break; 5080 } 5081 5082 /* And the notify bits. */ 5083 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 5084 if (safilled != 0) { 5085 bitcnt = fxdr_unsigned(int, *tl); 5086 if (bitcnt > 0) { 5087 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 5088 if (notifybitsp != NULL) 5089 *notifybitsp = 5090 fxdr_unsigned(uint32_t, *tl); 5091 } 5092 *ndip = ndi; 5093 } else 5094 error = EPERM; 5095 } 5096 if (nd->nd_repstat != 0) 5097 error = nd->nd_repstat; 5098 nfsmout: 5099 if (error != 0 && ndi != NULL) 5100 nfscl_freedevinfo(ndi); 5101 mbuf_freem(nd->nd_mrep); 5102 return (error); 5103 } 5104 5105 /* 5106 * Do the NFSv4.1 LayoutCommit. 5107 */ 5108 int 5109 nfsrpc_layoutcommit(struct nfsmount *nmp, uint8_t *fh, int fhlen, int reclaim, 5110 uint64_t off, uint64_t len, uint64_t lastbyte, nfsv4stateid_t *stateidp, 5111 int layouttype, int layoutupdatecnt, uint8_t *layp, struct ucred *cred, 5112 NFSPROC_T *p, void *stuff) 5113 { 5114 uint32_t *tl; 5115 struct nfsrv_descript nfsd, *nd = &nfsd; 5116 int error, outcnt, i; 5117 uint8_t *cp; 5118 5119 nfscl_reqstart(nd, NFSPROC_LAYOUTCOMMIT, nmp, fh, fhlen, NULL, NULL); 5120 NFSM_BUILD(tl, uint32_t *, 5 * NFSX_UNSIGNED + 3 * NFSX_HYPER + 5121 NFSX_STATEID); 5122 txdr_hyper(off, tl); 5123 tl += 2; 5124 txdr_hyper(len, tl); 5125 tl += 2; 5126 if (reclaim != 0) 5127 *tl++ = newnfs_true; 5128 else 5129 *tl++ = newnfs_false; 5130 *tl++ = txdr_unsigned(stateidp->seqid); 5131 *tl++ = stateidp->other[0]; 5132 *tl++ = stateidp->other[1]; 5133 *tl++ = stateidp->other[2]; 5134 *tl++ = newnfs_true; 5135 if (lastbyte < off) 5136 lastbyte = off; 5137 else if (lastbyte >= (off + len)) 5138 lastbyte = off + len - 1; 5139 txdr_hyper(lastbyte, tl); 5140 tl += 2; 5141 *tl++ = newnfs_false; 5142 *tl++ = txdr_unsigned(layouttype); 5143 *tl = txdr_unsigned(layoutupdatecnt); 5144 if (layoutupdatecnt > 0) { 5145 KASSERT(layouttype != NFSLAYOUT_NFSV4_1_FILES, 5146 ("Must be nil for Files Layout")); 5147 outcnt = NFSM_RNDUP(layoutupdatecnt); 5148 NFSM_BUILD(cp, uint8_t *, outcnt); 5149 NFSBCOPY(layp, cp, layoutupdatecnt); 5150 cp += layoutupdatecnt; 5151 for (i = 0; i < (outcnt - layoutupdatecnt); i++) 5152 *cp++ = 0x0; 5153 } 5154 nd->nd_flag |= ND_USEGSSNAME; 5155 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 5156 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 5157 if (error != 0) 5158 return (error); 5159 error = nd->nd_repstat; 5160 mbuf_freem(nd->nd_mrep); 5161 return (error); 5162 } 5163 5164 /* 5165 * Do the NFSv4.1 LayoutReturn. 5166 */ 5167 int 5168 nfsrpc_layoutreturn(struct nfsmount *nmp, uint8_t *fh, int fhlen, int reclaim, 5169 int layouttype, uint32_t iomode, int layoutreturn, uint64_t offset, 5170 uint64_t len, nfsv4stateid_t *stateidp, int layoutcnt, uint32_t *layp, 5171 struct ucred *cred, NFSPROC_T *p, void *stuff) 5172 { 5173 uint32_t *tl; 5174 struct nfsrv_descript nfsd, *nd = &nfsd; 5175 int error, outcnt, i; 5176 uint8_t *cp; 5177 5178 nfscl_reqstart(nd, NFSPROC_LAYOUTRETURN, nmp, fh, fhlen, NULL, NULL); 5179 NFSM_BUILD(tl, uint32_t *, 4 * NFSX_UNSIGNED); 5180 if (reclaim != 0) 5181 *tl++ = newnfs_true; 5182 else 5183 *tl++ = newnfs_false; 5184 *tl++ = txdr_unsigned(layouttype); 5185 *tl++ = txdr_unsigned(iomode); 5186 *tl = txdr_unsigned(layoutreturn); 5187 if (layoutreturn == NFSLAYOUTRETURN_FILE) { 5188 NFSM_BUILD(tl, uint32_t *, 2 * NFSX_HYPER + NFSX_STATEID + 5189 NFSX_UNSIGNED); 5190 txdr_hyper(offset, tl); 5191 tl += 2; 5192 txdr_hyper(len, tl); 5193 tl += 2; 5194 NFSCL_DEBUG(4, "layoutret stseq=%d\n", (int)stateidp->seqid); 5195 *tl++ = txdr_unsigned(stateidp->seqid); 5196 *tl++ = stateidp->other[0]; 5197 *tl++ = stateidp->other[1]; 5198 *tl++ = stateidp->other[2]; 5199 *tl = txdr_unsigned(layoutcnt); 5200 if (layoutcnt > 0) { 5201 outcnt = NFSM_RNDUP(layoutcnt); 5202 NFSM_BUILD(cp, uint8_t *, outcnt); 5203 NFSBCOPY(layp, cp, layoutcnt); 5204 cp += layoutcnt; 5205 for (i = 0; i < (outcnt - layoutcnt); i++) 5206 *cp++ = 0x0; 5207 } 5208 } 5209 nd->nd_flag |= ND_USEGSSNAME; 5210 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 5211 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 5212 if (error != 0) 5213 return (error); 5214 if (nd->nd_repstat == 0) { 5215 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 5216 if (*tl != 0) { 5217 NFSM_DISSECT(tl, uint32_t *, NFSX_STATEID); 5218 stateidp->seqid = fxdr_unsigned(uint32_t, *tl++); 5219 stateidp->other[0] = *tl++; 5220 stateidp->other[1] = *tl++; 5221 stateidp->other[2] = *tl; 5222 } 5223 } else 5224 error = nd->nd_repstat; 5225 nfsmout: 5226 mbuf_freem(nd->nd_mrep); 5227 return (error); 5228 } 5229 5230 /* 5231 * Acquire a layout and devinfo, if possible. The caller must have acquired 5232 * a reference count on the nfsclclient structure before calling this. 5233 * Return the layout in lypp with a reference count on it, if successful. 5234 */ 5235 static int 5236 nfsrpc_getlayout(struct nfsmount *nmp, vnode_t vp, struct nfsfh *nfhp, 5237 int iomode, uint32_t *notifybitsp, nfsv4stateid_t *stateidp, uint64_t off, 5238 struct nfscllayout **lypp, struct ucred *cred, NFSPROC_T *p) 5239 { 5240 struct nfscllayout *lyp; 5241 struct nfsclflayout *flp, *tflp; 5242 struct nfscldevinfo *dip; 5243 struct nfsclflayouthead flh; 5244 int error = 0, islocked, layoutlen, recalled, retonclose; 5245 nfsv4stateid_t stateid; 5246 struct nfsclsession *tsep; 5247 5248 *lypp = NULL; 5249 /* 5250 * If lyp is returned non-NULL, there will be a refcnt (shared lock) 5251 * on it, iff flp != NULL or a lock (exclusive lock) on it iff 5252 * flp == NULL. 5253 */ 5254 lyp = nfscl_getlayout(nmp->nm_clp, nfhp->nfh_fh, nfhp->nfh_len, 5255 off, &flp, &recalled); 5256 islocked = 0; 5257 if (lyp == NULL || flp == NULL) { 5258 if (recalled != 0) 5259 return (EIO); 5260 LIST_INIT(&flh); 5261 tsep = nfsmnt_mdssession(nmp); 5262 layoutlen = tsep->nfsess_maxcache - 5263 (NFSX_STATEID + 3 * NFSX_UNSIGNED); 5264 if (lyp == NULL) { 5265 stateid.seqid = 0; 5266 stateid.other[0] = stateidp->other[0]; 5267 stateid.other[1] = stateidp->other[1]; 5268 stateid.other[2] = stateidp->other[2]; 5269 error = nfsrpc_layoutget(nmp, nfhp->nfh_fh, 5270 nfhp->nfh_len, iomode, (uint64_t)0, UINT64_MAX, 5271 (uint64_t)0, layoutlen, &stateid, &retonclose, 5272 &flh, cred, p, NULL); 5273 } else { 5274 islocked = 1; 5275 stateid.seqid = lyp->nfsly_stateid.seqid; 5276 stateid.other[0] = lyp->nfsly_stateid.other[0]; 5277 stateid.other[1] = lyp->nfsly_stateid.other[1]; 5278 stateid.other[2] = lyp->nfsly_stateid.other[2]; 5279 error = nfsrpc_layoutget(nmp, nfhp->nfh_fh, 5280 nfhp->nfh_len, iomode, off, UINT64_MAX, 5281 (uint64_t)0, layoutlen, &stateid, &retonclose, 5282 &flh, cred, p, NULL); 5283 } 5284 if (error == 0) 5285 LIST_FOREACH(tflp, &flh, nfsfl_list) { 5286 error = nfscl_adddevinfo(nmp, NULL, tflp); 5287 if (error != 0) { 5288 error = nfsrpc_getdeviceinfo(nmp, 5289 tflp->nfsfl_dev, 5290 NFSLAYOUT_NFSV4_1_FILES, 5291 notifybitsp, &dip, cred, p); 5292 if (error != 0) 5293 break; 5294 error = nfscl_adddevinfo(nmp, dip, 5295 tflp); 5296 if (error != 0) 5297 printf( 5298 "getlayout: cannot add\n"); 5299 } 5300 } 5301 if (error == 0) { 5302 /* 5303 * nfscl_layout() always returns with the nfsly_lock 5304 * set to a refcnt (shared lock). 5305 */ 5306 error = nfscl_layout(nmp, vp, nfhp->nfh_fh, 5307 nfhp->nfh_len, &stateid, retonclose, &flh, &lyp, 5308 cred, p); 5309 if (error == 0) 5310 *lypp = lyp; 5311 } else if (islocked != 0) 5312 nfsv4_unlock(&lyp->nfsly_lock, 0); 5313 } else 5314 *lypp = lyp; 5315 return (error); 5316 } 5317 5318 /* 5319 * Do a TCP connection plus exchange id and create session. 5320 * If successful, a "struct nfsclds" is linked into the list for the 5321 * mount point and a pointer to it is returned. 5322 */ 5323 static int 5324 nfsrpc_fillsa(struct nfsmount *nmp, struct sockaddr_storage *ssp, 5325 struct nfsclds **dspp, NFSPROC_T *p) 5326 { 5327 struct sockaddr_in *msad, *sad, *ssd; 5328 struct sockaddr_in6 *msad6, *sad6, *ssd6; 5329 struct nfsclclient *clp; 5330 struct nfssockreq *nrp; 5331 struct nfsclds *dsp, *tdsp; 5332 int error; 5333 enum nfsclds_state retv; 5334 uint32_t sequenceid; 5335 5336 KASSERT(nmp->nm_sockreq.nr_cred != NULL, 5337 ("nfsrpc_fillsa: NULL nr_cred")); 5338 NFSLOCKCLSTATE(); 5339 clp = nmp->nm_clp; 5340 NFSUNLOCKCLSTATE(); 5341 if (clp == NULL) 5342 return (EPERM); 5343 if (ssp->ss_family == AF_INET) { 5344 ssd = (struct sockaddr_in *)ssp; 5345 NFSLOCKMNT(nmp); 5346 5347 /* 5348 * Check to see if we already have a session for this 5349 * address that is usable for a DS. 5350 * Note that the MDS's address is in a different place 5351 * than the sessions already acquired for DS's. 5352 */ 5353 msad = (struct sockaddr_in *)nmp->nm_sockreq.nr_nam; 5354 tdsp = TAILQ_FIRST(&nmp->nm_sess); 5355 while (tdsp != NULL) { 5356 if (msad != NULL && msad->sin_family == AF_INET && 5357 ssd->sin_addr.s_addr == msad->sin_addr.s_addr && 5358 ssd->sin_port == msad->sin_port && 5359 (tdsp->nfsclds_flags & NFSCLDS_DS) != 0 && 5360 tdsp->nfsclds_sess.nfsess_defunct == 0) { 5361 *dspp = tdsp; 5362 NFSUNLOCKMNT(nmp); 5363 NFSCL_DEBUG(4, "fnd same addr\n"); 5364 return (0); 5365 } 5366 tdsp = TAILQ_NEXT(tdsp, nfsclds_list); 5367 if (tdsp != NULL && tdsp->nfsclds_sockp != NULL) 5368 msad = (struct sockaddr_in *) 5369 tdsp->nfsclds_sockp->nr_nam; 5370 else 5371 msad = NULL; 5372 } 5373 NFSUNLOCKMNT(nmp); 5374 5375 /* No IP address match, so look for new/trunked one. */ 5376 sad = malloc(sizeof(*sad), M_SONAME, M_WAITOK | M_ZERO); 5377 sad->sin_len = sizeof(*sad); 5378 sad->sin_family = AF_INET; 5379 sad->sin_port = ssd->sin_port; 5380 sad->sin_addr.s_addr = ssd->sin_addr.s_addr; 5381 nrp = malloc(sizeof(*nrp), M_NFSSOCKREQ, M_WAITOK | M_ZERO); 5382 nrp->nr_nam = (struct sockaddr *)sad; 5383 } else if (ssp->ss_family == AF_INET6) { 5384 ssd6 = (struct sockaddr_in6 *)ssp; 5385 NFSLOCKMNT(nmp); 5386 5387 /* 5388 * Check to see if we already have a session for this 5389 * address that is usable for a DS. 5390 * Note that the MDS's address is in a different place 5391 * than the sessions already acquired for DS's. 5392 */ 5393 msad6 = (struct sockaddr_in6 *)nmp->nm_sockreq.nr_nam; 5394 tdsp = TAILQ_FIRST(&nmp->nm_sess); 5395 while (tdsp != NULL) { 5396 if (msad6 != NULL && msad6->sin6_family == AF_INET6 && 5397 IN6_ARE_ADDR_EQUAL(&ssd6->sin6_addr, 5398 &msad6->sin6_addr) && 5399 ssd6->sin6_port == msad6->sin6_port && 5400 (tdsp->nfsclds_flags & NFSCLDS_DS) != 0 && 5401 tdsp->nfsclds_sess.nfsess_defunct == 0) { 5402 *dspp = tdsp; 5403 NFSUNLOCKMNT(nmp); 5404 return (0); 5405 } 5406 tdsp = TAILQ_NEXT(tdsp, nfsclds_list); 5407 if (tdsp != NULL && tdsp->nfsclds_sockp != NULL) 5408 msad6 = (struct sockaddr_in6 *) 5409 tdsp->nfsclds_sockp->nr_nam; 5410 else 5411 msad6 = NULL; 5412 } 5413 NFSUNLOCKMNT(nmp); 5414 5415 /* No IP address match, so look for new/trunked one. */ 5416 sad6 = malloc(sizeof(*sad6), M_SONAME, M_WAITOK | M_ZERO); 5417 sad6->sin6_len = sizeof(*sad6); 5418 sad6->sin6_family = AF_INET6; 5419 sad6->sin6_port = ssd6->sin6_port; 5420 NFSBCOPY(&ssd6->sin6_addr, &sad6->sin6_addr, 5421 sizeof(struct in6_addr)); 5422 nrp = malloc(sizeof(*nrp), M_NFSSOCKREQ, M_WAITOK | M_ZERO); 5423 nrp->nr_nam = (struct sockaddr *)sad6; 5424 } else 5425 return (EPERM); 5426 5427 nrp->nr_sotype = SOCK_STREAM; 5428 mtx_init(&nrp->nr_mtx, "nfssock", NULL, MTX_DEF); 5429 nrp->nr_prog = NFS_PROG; 5430 nrp->nr_vers = NFS_VER4; 5431 5432 /* 5433 * Use the credentials that were used for the mount, which are 5434 * in nmp->nm_sockreq.nr_cred for newnfs_connect() etc. 5435 * Ref. counting the credentials with crhold() is probably not 5436 * necessary, since nm_sockreq.nr_cred won't be crfree()'d until 5437 * unmount, but I did it anyhow. 5438 */ 5439 nrp->nr_cred = crhold(nmp->nm_sockreq.nr_cred); 5440 error = newnfs_connect(nmp, nrp, NULL, p, 0); 5441 NFSCL_DEBUG(3, "DS connect=%d\n", error); 5442 5443 /* Now, do the exchangeid and create session. */ 5444 if (error == 0) { 5445 error = nfsrpc_exchangeid(nmp, clp, nrp, NFSV4EXCH_USEPNFSDS, 5446 &dsp, nrp->nr_cred, p); 5447 NFSCL_DEBUG(3, "DS exchangeid=%d\n", error); 5448 if (error != 0) 5449 newnfs_disconnect(nrp); 5450 } 5451 if (error == 0) { 5452 dsp->nfsclds_sockp = nrp; 5453 NFSLOCKMNT(nmp); 5454 retv = nfscl_getsameserver(nmp, dsp, &tdsp); 5455 NFSCL_DEBUG(3, "getsame ret=%d\n", retv); 5456 if (retv == NFSDSP_USETHISSESSION) { 5457 NFSUNLOCKMNT(nmp); 5458 /* 5459 * If there is already a session for this server, 5460 * use it. 5461 */ 5462 (void)newnfs_disconnect(nrp); 5463 nfscl_freenfsclds(dsp); 5464 *dspp = tdsp; 5465 return (0); 5466 } 5467 if (retv == NFSDSP_SEQTHISSESSION) 5468 sequenceid = tdsp->nfsclds_sess.nfsess_sequenceid; 5469 else 5470 sequenceid = dsp->nfsclds_sess.nfsess_sequenceid; 5471 NFSUNLOCKMNT(nmp); 5472 error = nfsrpc_createsession(nmp, &dsp->nfsclds_sess, 5473 nrp, sequenceid, 0, nrp->nr_cred, p); 5474 NFSCL_DEBUG(3, "DS createsess=%d\n", error); 5475 } else { 5476 NFSFREECRED(nrp->nr_cred); 5477 NFSFREEMUTEX(&nrp->nr_mtx); 5478 free(nrp->nr_nam, M_SONAME); 5479 free(nrp, M_NFSSOCKREQ); 5480 } 5481 if (error == 0) { 5482 NFSCL_DEBUG(3, "add DS session\n"); 5483 /* 5484 * Put it at the end of the list. That way the list 5485 * is ordered by when the entry was added. This matters 5486 * since the one done first is the one that should be 5487 * used for sequencid'ing any subsequent create sessions. 5488 */ 5489 NFSLOCKMNT(nmp); 5490 TAILQ_INSERT_TAIL(&nmp->nm_sess, dsp, nfsclds_list); 5491 NFSUNLOCKMNT(nmp); 5492 *dspp = dsp; 5493 } else if (dsp != NULL) { 5494 newnfs_disconnect(nrp); 5495 nfscl_freenfsclds(dsp); 5496 } 5497 return (error); 5498 } 5499 5500 /* 5501 * Do the NFSv4.1 Reclaim Complete. 5502 */ 5503 int 5504 nfsrpc_reclaimcomplete(struct nfsmount *nmp, struct ucred *cred, NFSPROC_T *p) 5505 { 5506 uint32_t *tl; 5507 struct nfsrv_descript nfsd; 5508 struct nfsrv_descript *nd = &nfsd; 5509 int error; 5510 5511 nfscl_reqstart(nd, NFSPROC_RECLAIMCOMPL, nmp, NULL, 0, NULL, NULL); 5512 NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED); 5513 *tl = newnfs_false; 5514 nd->nd_flag |= ND_USEGSSNAME; 5515 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 5516 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 5517 if (error != 0) 5518 return (error); 5519 error = nd->nd_repstat; 5520 mbuf_freem(nd->nd_mrep); 5521 return (error); 5522 } 5523 5524 /* 5525 * Initialize the slot tables for a session. 5526 */ 5527 static void 5528 nfscl_initsessionslots(struct nfsclsession *sep) 5529 { 5530 int i; 5531 5532 for (i = 0; i < NFSV4_CBSLOTS; i++) { 5533 if (sep->nfsess_cbslots[i].nfssl_reply != NULL) 5534 m_freem(sep->nfsess_cbslots[i].nfssl_reply); 5535 NFSBZERO(&sep->nfsess_cbslots[i], sizeof(struct nfsslot)); 5536 } 5537 for (i = 0; i < 64; i++) 5538 sep->nfsess_slotseq[i] = 0; 5539 sep->nfsess_slots = 0; 5540 } 5541 5542 /* 5543 * Called to try and do an I/O operation via an NFSv4.1 Data Server (DS). 5544 */ 5545 int 5546 nfscl_doiods(vnode_t vp, struct uio *uiop, int *iomode, int *must_commit, 5547 uint32_t rwaccess, struct ucred *cred, NFSPROC_T *p) 5548 { 5549 struct nfsnode *np = VTONFS(vp); 5550 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 5551 struct nfscllayout *layp; 5552 struct nfscldevinfo *dip; 5553 struct nfsclflayout *rflp; 5554 nfsv4stateid_t stateid; 5555 struct ucred *newcred; 5556 uint64_t lastbyte, len, off, oresid, xfer; 5557 int eof, error, iolaymode, recalled; 5558 void *lckp; 5559 5560 if (!NFSHASPNFS(nmp) || nfscl_enablecallb == 0 || nfs_numnfscbd == 0 || 5561 (np->n_flag & NNOLAYOUT) != 0) 5562 return (EIO); 5563 /* Now, get a reference cnt on the clientid for this mount. */ 5564 if (nfscl_getref(nmp) == 0) 5565 return (EIO); 5566 5567 /* Find an appropriate stateid. */ 5568 newcred = NFSNEWCRED(cred); 5569 error = nfscl_getstateid(vp, np->n_fhp->nfh_fh, np->n_fhp->nfh_len, 5570 rwaccess, 1, newcred, p, &stateid, &lckp); 5571 if (error != 0) { 5572 NFSFREECRED(newcred); 5573 nfscl_relref(nmp); 5574 return (error); 5575 } 5576 /* Search for a layout for this file. */ 5577 off = uiop->uio_offset; 5578 layp = nfscl_getlayout(nmp->nm_clp, np->n_fhp->nfh_fh, 5579 np->n_fhp->nfh_len, off, &rflp, &recalled); 5580 if (layp == NULL || rflp == NULL) { 5581 if (recalled != 0) { 5582 NFSFREECRED(newcred); 5583 nfscl_relref(nmp); 5584 return (EIO); 5585 } 5586 if (layp != NULL) { 5587 nfscl_rellayout(layp, (rflp == NULL) ? 1 : 0); 5588 layp = NULL; 5589 } 5590 /* Try and get a Layout, if it is supported. */ 5591 if (rwaccess == NFSV4OPEN_ACCESSWRITE || 5592 (np->n_flag & NWRITEOPENED) != 0) 5593 iolaymode = NFSLAYOUTIOMODE_RW; 5594 else 5595 iolaymode = NFSLAYOUTIOMODE_READ; 5596 error = nfsrpc_getlayout(nmp, vp, np->n_fhp, iolaymode, 5597 NULL, &stateid, off, &layp, newcred, p); 5598 if (error != 0) { 5599 NFSLOCKNODE(np); 5600 np->n_flag |= NNOLAYOUT; 5601 NFSUNLOCKNODE(np); 5602 if (lckp != NULL) 5603 nfscl_lockderef(lckp); 5604 NFSFREECRED(newcred); 5605 if (layp != NULL) 5606 nfscl_rellayout(layp, 0); 5607 nfscl_relref(nmp); 5608 return (error); 5609 } 5610 } 5611 5612 /* 5613 * Loop around finding a layout that works for the first part of 5614 * this I/O operation, and then call the function that actually 5615 * does the RPC. 5616 */ 5617 eof = 0; 5618 len = (uint64_t)uiop->uio_resid; 5619 while (len > 0 && error == 0 && eof == 0) { 5620 off = uiop->uio_offset; 5621 error = nfscl_findlayoutforio(layp, off, rwaccess, &rflp); 5622 if (error == 0) { 5623 oresid = xfer = (uint64_t)uiop->uio_resid; 5624 if (xfer > (rflp->nfsfl_end - rflp->nfsfl_off)) 5625 xfer = rflp->nfsfl_end - rflp->nfsfl_off; 5626 dip = nfscl_getdevinfo(nmp->nm_clp, rflp->nfsfl_dev, 5627 rflp->nfsfl_devp); 5628 if (dip != NULL) { 5629 error = nfscl_doflayoutio(vp, uiop, iomode, 5630 must_commit, &eof, &stateid, rwaccess, dip, 5631 layp, rflp, off, xfer, newcred, p); 5632 nfscl_reldevinfo(dip); 5633 lastbyte = off + xfer - 1; 5634 if (error == 0) { 5635 NFSLOCKCLSTATE(); 5636 if (lastbyte > layp->nfsly_lastbyte) 5637 layp->nfsly_lastbyte = lastbyte; 5638 NFSUNLOCKCLSTATE(); 5639 } else if (error == NFSERR_OPENMODE && 5640 rwaccess == NFSV4OPEN_ACCESSREAD) { 5641 NFSLOCKMNT(nmp); 5642 nmp->nm_state |= NFSSTA_OPENMODE; 5643 NFSUNLOCKMNT(nmp); 5644 } 5645 } else 5646 error = EIO; 5647 if (error == 0) 5648 len -= (oresid - (uint64_t)uiop->uio_resid); 5649 } 5650 } 5651 if (lckp != NULL) 5652 nfscl_lockderef(lckp); 5653 NFSFREECRED(newcred); 5654 nfscl_rellayout(layp, 0); 5655 nfscl_relref(nmp); 5656 return (error); 5657 } 5658 5659 /* 5660 * Find a file layout that will handle the first bytes of the requested 5661 * range and return the information from it needed to to the I/O operation. 5662 */ 5663 int 5664 nfscl_findlayoutforio(struct nfscllayout *lyp, uint64_t off, uint32_t rwaccess, 5665 struct nfsclflayout **retflpp) 5666 { 5667 struct nfsclflayout *flp, *nflp, *rflp; 5668 uint32_t rw; 5669 5670 rflp = NULL; 5671 rw = rwaccess; 5672 /* For reading, do the Read list first and then the Write list. */ 5673 do { 5674 if (rw == NFSV4OPEN_ACCESSREAD) 5675 flp = LIST_FIRST(&lyp->nfsly_flayread); 5676 else 5677 flp = LIST_FIRST(&lyp->nfsly_flayrw); 5678 while (flp != NULL) { 5679 nflp = LIST_NEXT(flp, nfsfl_list); 5680 if (flp->nfsfl_off > off) 5681 break; 5682 if (flp->nfsfl_end > off && 5683 (rflp == NULL || rflp->nfsfl_end < flp->nfsfl_end)) 5684 rflp = flp; 5685 flp = nflp; 5686 } 5687 if (rw == NFSV4OPEN_ACCESSREAD) 5688 rw = NFSV4OPEN_ACCESSWRITE; 5689 else 5690 rw = 0; 5691 } while (rw != 0); 5692 if (rflp != NULL) { 5693 /* This one covers the most bytes starting at off. */ 5694 *retflpp = rflp; 5695 return (0); 5696 } 5697 return (EIO); 5698 } 5699 5700 /* 5701 * Do I/O using an NFSv4.1 file layout. 5702 */ 5703 static int 5704 nfscl_doflayoutio(vnode_t vp, struct uio *uiop, int *iomode, int *must_commit, 5705 int *eofp, nfsv4stateid_t *stateidp, int rwflag, struct nfscldevinfo *dp, 5706 struct nfscllayout *lyp, struct nfsclflayout *flp, uint64_t off, 5707 uint64_t len, struct ucred *cred, NFSPROC_T *p) 5708 { 5709 uint64_t io_off, rel_off, stripe_unit_size, transfer, xfer; 5710 int commit_thru_mds, error = 0, stripe_index, stripe_pos; 5711 struct nfsnode *np; 5712 struct nfsfh *fhp; 5713 struct nfsclds **dspp; 5714 5715 np = VTONFS(vp); 5716 rel_off = off - flp->nfsfl_patoff; 5717 stripe_unit_size = (flp->nfsfl_util >> 6) & 0x3ffffff; 5718 stripe_pos = (rel_off / stripe_unit_size + flp->nfsfl_stripe1) % 5719 dp->nfsdi_stripecnt; 5720 transfer = stripe_unit_size - (rel_off % stripe_unit_size); 5721 5722 /* Loop around, doing I/O for each stripe unit. */ 5723 while (len > 0 && error == 0) { 5724 stripe_index = nfsfldi_stripeindex(dp, stripe_pos); 5725 dspp = nfsfldi_addr(dp, stripe_index); 5726 if (len > transfer) 5727 xfer = transfer; 5728 else 5729 xfer = len; 5730 if ((flp->nfsfl_util & NFSFLAYUTIL_DENSE) != 0) { 5731 /* Dense layout. */ 5732 if (stripe_pos >= flp->nfsfl_fhcnt) 5733 return (EIO); 5734 fhp = flp->nfsfl_fh[stripe_pos]; 5735 io_off = (rel_off / (stripe_unit_size * 5736 dp->nfsdi_stripecnt)) * stripe_unit_size + 5737 rel_off % stripe_unit_size; 5738 } else { 5739 /* Sparse layout. */ 5740 if (flp->nfsfl_fhcnt > 1) { 5741 if (stripe_index >= flp->nfsfl_fhcnt) 5742 return (EIO); 5743 fhp = flp->nfsfl_fh[stripe_index]; 5744 } else if (flp->nfsfl_fhcnt == 1) 5745 fhp = flp->nfsfl_fh[0]; 5746 else 5747 fhp = np->n_fhp; 5748 io_off = off; 5749 } 5750 if ((flp->nfsfl_util & NFSFLAYUTIL_COMMIT_THRU_MDS) != 0) 5751 commit_thru_mds = 1; 5752 else 5753 commit_thru_mds = 0; 5754 if (rwflag == FREAD) 5755 error = nfsrpc_readds(vp, uiop, stateidp, eofp, *dspp, 5756 io_off, xfer, fhp, cred, p); 5757 else { 5758 error = nfsrpc_writeds(vp, uiop, iomode, must_commit, 5759 stateidp, *dspp, io_off, xfer, fhp, commit_thru_mds, 5760 cred, p); 5761 if (error == 0) { 5762 NFSLOCKCLSTATE(); 5763 lyp->nfsly_flags |= NFSLY_WRITTEN; 5764 NFSUNLOCKCLSTATE(); 5765 } 5766 } 5767 if (error == 0) { 5768 transfer = stripe_unit_size; 5769 stripe_pos = (stripe_pos + 1) % dp->nfsdi_stripecnt; 5770 len -= xfer; 5771 off += xfer; 5772 } 5773 } 5774 return (error); 5775 } 5776 5777 /* 5778 * The actual read RPC done to a DS. 5779 */ 5780 static int 5781 nfsrpc_readds(vnode_t vp, struct uio *uiop, nfsv4stateid_t *stateidp, int *eofp, 5782 struct nfsclds *dsp, uint64_t io_off, int len, struct nfsfh *fhp, 5783 struct ucred *cred, NFSPROC_T *p) 5784 { 5785 uint32_t *tl; 5786 int error, retlen; 5787 struct nfsrv_descript nfsd; 5788 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 5789 struct nfsrv_descript *nd = &nfsd; 5790 struct nfssockreq *nrp; 5791 5792 nd->nd_mrep = NULL; 5793 nfscl_reqstart(nd, NFSPROC_READDS, nmp, fhp->nfh_fh, fhp->nfh_len, 5794 NULL, &dsp->nfsclds_sess); 5795 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSEQIDZERO); 5796 NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED * 3); 5797 txdr_hyper(io_off, tl); 5798 *(tl + 2) = txdr_unsigned(len); 5799 nrp = dsp->nfsclds_sockp; 5800 if (nrp == NULL) 5801 /* If NULL, use the MDS socket. */ 5802 nrp = &nmp->nm_sockreq; 5803 error = newnfs_request(nd, nmp, NULL, nrp, vp, p, cred, 5804 NFS_PROG, NFS_VER4, NULL, 1, NULL, &dsp->nfsclds_sess); 5805 if (error != 0) 5806 return (error); 5807 if (nd->nd_repstat != 0) { 5808 error = nd->nd_repstat; 5809 goto nfsmout; 5810 } 5811 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 5812 *eofp = fxdr_unsigned(int, *tl); 5813 NFSM_STRSIZ(retlen, len); 5814 error = nfsm_mbufuio(nd, uiop, retlen); 5815 nfsmout: 5816 if (nd->nd_mrep != NULL) 5817 mbuf_freem(nd->nd_mrep); 5818 return (error); 5819 } 5820 5821 /* 5822 * The actual write RPC done to a DS. 5823 */ 5824 static int 5825 nfsrpc_writeds(vnode_t vp, struct uio *uiop, int *iomode, int *must_commit, 5826 nfsv4stateid_t *stateidp, struct nfsclds *dsp, uint64_t io_off, int len, 5827 struct nfsfh *fhp, int commit_thru_mds, struct ucred *cred, NFSPROC_T *p) 5828 { 5829 uint32_t *tl; 5830 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 5831 int error, rlen, commit, committed = NFSWRITE_FILESYNC; 5832 int32_t backup; 5833 struct nfsrv_descript nfsd; 5834 struct nfsrv_descript *nd = &nfsd; 5835 struct nfssockreq *nrp; 5836 5837 KASSERT(uiop->uio_iovcnt == 1, ("nfs: writerpc iovcnt > 1")); 5838 nd->nd_mrep = NULL; 5839 nfscl_reqstart(nd, NFSPROC_WRITEDS, nmp, fhp->nfh_fh, fhp->nfh_len, 5840 NULL, &dsp->nfsclds_sess); 5841 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSEQIDZERO); 5842 NFSM_BUILD(tl, uint32_t *, NFSX_HYPER + 2 * NFSX_UNSIGNED); 5843 txdr_hyper(io_off, tl); 5844 tl += 2; 5845 *tl++ = txdr_unsigned(*iomode); 5846 *tl = txdr_unsigned(len); 5847 nfsm_uiombuf(nd, uiop, len); 5848 nrp = dsp->nfsclds_sockp; 5849 if (nrp == NULL) 5850 /* If NULL, use the MDS socket. */ 5851 nrp = &nmp->nm_sockreq; 5852 error = newnfs_request(nd, nmp, NULL, nrp, vp, p, cred, 5853 NFS_PROG, NFS_VER4, NULL, 1, NULL, &dsp->nfsclds_sess); 5854 if (error != 0) 5855 return (error); 5856 if (nd->nd_repstat != 0) { 5857 /* 5858 * In case the rpc gets retried, roll 5859 * the uio fileds changed by nfsm_uiombuf() 5860 * back. 5861 */ 5862 uiop->uio_offset -= len; 5863 uio_uio_resid_add(uiop, len); 5864 uio_iov_base_add(uiop, -len); 5865 uio_iov_len_add(uiop, len); 5866 error = nd->nd_repstat; 5867 } else { 5868 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED + NFSX_VERF); 5869 rlen = fxdr_unsigned(int, *tl++); 5870 if (rlen == 0) { 5871 error = NFSERR_IO; 5872 goto nfsmout; 5873 } else if (rlen < len) { 5874 backup = len - rlen; 5875 uio_iov_base_add(uiop, -(backup)); 5876 uio_iov_len_add(uiop, backup); 5877 uiop->uio_offset -= backup; 5878 uio_uio_resid_add(uiop, backup); 5879 len = rlen; 5880 } 5881 commit = fxdr_unsigned(int, *tl++); 5882 5883 /* 5884 * Return the lowest commitment level 5885 * obtained by any of the RPCs. 5886 */ 5887 if (committed == NFSWRITE_FILESYNC) 5888 committed = commit; 5889 else if (committed == NFSWRITE_DATASYNC && 5890 commit == NFSWRITE_UNSTABLE) 5891 committed = commit; 5892 if (commit_thru_mds != 0) { 5893 NFSLOCKMNT(nmp); 5894 if (!NFSHASWRITEVERF(nmp)) { 5895 NFSBCOPY(tl, nmp->nm_verf, NFSX_VERF); 5896 NFSSETWRITEVERF(nmp); 5897 } else if (NFSBCMP(tl, nmp->nm_verf, NFSX_VERF)) { 5898 *must_commit = 1; 5899 NFSBCOPY(tl, nmp->nm_verf, NFSX_VERF); 5900 } 5901 NFSUNLOCKMNT(nmp); 5902 } else { 5903 NFSLOCKDS(dsp); 5904 if ((dsp->nfsclds_flags & NFSCLDS_HASWRITEVERF) == 0) { 5905 NFSBCOPY(tl, dsp->nfsclds_verf, NFSX_VERF); 5906 dsp->nfsclds_flags |= NFSCLDS_HASWRITEVERF; 5907 } else if (NFSBCMP(tl, dsp->nfsclds_verf, NFSX_VERF)) { 5908 *must_commit = 1; 5909 NFSBCOPY(tl, dsp->nfsclds_verf, NFSX_VERF); 5910 } 5911 NFSUNLOCKDS(dsp); 5912 } 5913 } 5914 nfsmout: 5915 if (nd->nd_mrep != NULL) 5916 mbuf_freem(nd->nd_mrep); 5917 *iomode = committed; 5918 if (nd->nd_repstat != 0 && error == 0) 5919 error = nd->nd_repstat; 5920 return (error); 5921 } 5922 5923 /* 5924 * Free up the nfsclds structure. 5925 */ 5926 void 5927 nfscl_freenfsclds(struct nfsclds *dsp) 5928 { 5929 int i; 5930 5931 if (dsp == NULL) 5932 return; 5933 if (dsp->nfsclds_sockp != NULL) { 5934 NFSFREECRED(dsp->nfsclds_sockp->nr_cred); 5935 NFSFREEMUTEX(&dsp->nfsclds_sockp->nr_mtx); 5936 free(dsp->nfsclds_sockp->nr_nam, M_SONAME); 5937 free(dsp->nfsclds_sockp, M_NFSSOCKREQ); 5938 } 5939 NFSFREEMUTEX(&dsp->nfsclds_mtx); 5940 NFSFREEMUTEX(&dsp->nfsclds_sess.nfsess_mtx); 5941 for (i = 0; i < NFSV4_CBSLOTS; i++) { 5942 if (dsp->nfsclds_sess.nfsess_cbslots[i].nfssl_reply != NULL) 5943 m_freem( 5944 dsp->nfsclds_sess.nfsess_cbslots[i].nfssl_reply); 5945 } 5946 free(dsp, M_NFSCLDS); 5947 } 5948 5949 static enum nfsclds_state 5950 nfscl_getsameserver(struct nfsmount *nmp, struct nfsclds *newdsp, 5951 struct nfsclds **retdspp) 5952 { 5953 struct nfsclds *dsp, *cur_dsp; 5954 5955 /* 5956 * Search the list of nfsclds structures for one with the same 5957 * server. 5958 */ 5959 cur_dsp = NULL; 5960 TAILQ_FOREACH(dsp, &nmp->nm_sess, nfsclds_list) { 5961 if (dsp->nfsclds_servownlen == newdsp->nfsclds_servownlen && 5962 dsp->nfsclds_servownlen != 0 && 5963 !NFSBCMP(dsp->nfsclds_serverown, newdsp->nfsclds_serverown, 5964 dsp->nfsclds_servownlen) && 5965 dsp->nfsclds_sess.nfsess_defunct == 0) { 5966 NFSCL_DEBUG(4, "fnd same fdsp=%p dsp=%p flg=0x%x\n", 5967 TAILQ_FIRST(&nmp->nm_sess), dsp, 5968 dsp->nfsclds_flags); 5969 /* Server major id matches. */ 5970 if ((dsp->nfsclds_flags & NFSCLDS_DS) != 0) { 5971 *retdspp = dsp; 5972 return (NFSDSP_USETHISSESSION); 5973 } 5974 5975 /* 5976 * Note the first match, so it can be used for 5977 * sequence'ing new sessions. 5978 */ 5979 if (cur_dsp == NULL) 5980 cur_dsp = dsp; 5981 } 5982 } 5983 if (cur_dsp != NULL) { 5984 *retdspp = cur_dsp; 5985 return (NFSDSP_SEQTHISSESSION); 5986 } 5987 return (NFSDSP_NOTFOUND); 5988 } 5989 5990 #ifdef notyet 5991 /* 5992 * NFS commit rpc to a DS. 5993 */ 5994 static int 5995 nfsrpc_commitds(vnode_t vp, uint64_t offset, int cnt, struct nfsclds *dsp, 5996 struct nfsfh *fhp, struct ucred *cred, NFSPROC_T *p, void *stuff) 5997 { 5998 uint32_t *tl; 5999 struct nfsrv_descript nfsd, *nd = &nfsd; 6000 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 6001 struct nfssockreq *nrp; 6002 int error; 6003 6004 nfscl_reqstart(nd, NFSPROC_COMMITDS, nmp, fhp->nfh_fh, fhp->nfh_len, 6005 NULL, &dsp->nfsclds_sess); 6006 NFSM_BUILD(tl, uint32_t *, NFSX_HYPER + NFSX_UNSIGNED); 6007 txdr_hyper(offset, tl); 6008 tl += 2; 6009 *tl = txdr_unsigned(cnt); 6010 nrp = dsp->nfsclds_sockp; 6011 if (nrp == NULL) 6012 /* If NULL, use the MDS socket. */ 6013 nrp = &nmp->nm_sockreq; 6014 error = newnfs_request(nd, nmp, NULL, nrp, vp, p, cred, 6015 NFS_PROG, NFS_VER4, NULL, 1, NULL, &dsp->nfsclds_sess); 6016 if (error) 6017 return (error); 6018 if (nd->nd_repstat == 0) { 6019 NFSM_DISSECT(tl, u_int32_t *, NFSX_VERF); 6020 NFSLOCKDS(dsp); 6021 if (NFSBCMP(tl, dsp->nfsclds_verf, NFSX_VERF)) { 6022 NFSBCOPY(tl, dsp->nfsclds_verf, NFSX_VERF); 6023 error = NFSERR_STALEWRITEVERF; 6024 } 6025 NFSUNLOCKDS(dsp); 6026 } 6027 nfsmout: 6028 if (error == 0 && nd->nd_repstat != 0) 6029 error = nd->nd_repstat; 6030 mbuf_freem(nd->nd_mrep); 6031 return (error); 6032 } 6033 #endif 6034 6035