1 /*- 2 * Copyright (c) 1989, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley by 6 * Rick Macklem at The University of Guelph. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 4. Neither the name of the University nor the names of its contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 * 32 */ 33 34 #include <sys/cdefs.h> 35 __FBSDID("$FreeBSD$"); 36 37 /* 38 * Rpc op calls, generally called from the vnode op calls or through the 39 * buffer cache, for NFS v2, 3 and 4. 40 * These do not normally make any changes to vnode arguments or use 41 * structures that might change between the VFS variants. The returned 42 * arguments are all at the end, after the NFSPROC_T *p one. 43 */ 44 45 #ifndef APPLEKEXT 46 #include "opt_inet6.h" 47 48 #include <fs/nfs/nfsport.h> 49 #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 (sizeof (struct dirent) - (MAXNAMLEN + 1)) 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(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; 387 388 dp = *dpp; 389 *dpp = NULL; 390 nfscl_reqstart(nd, NFSPROC_OPEN, nmp, nfhp, fhlen, NULL, NULL); 391 NFSM_BUILD(tl, u_int32_t *, 5 * NFSX_UNSIGNED); 392 *tl++ = txdr_unsigned(op->nfso_own->nfsow_seqid); 393 *tl++ = txdr_unsigned(mode & NFSV4OPEN_ACCESSBOTH); 394 *tl++ = txdr_unsigned((mode >> NFSLCK_SHIFT) & NFSV4OPEN_DENYBOTH); 395 *tl++ = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[0]; 396 *tl = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[1]; 397 (void) nfsm_strtom(nd, op->nfso_own->nfsow_owner, NFSV4CL_LOCKNAMELEN); 398 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 399 *tl++ = txdr_unsigned(NFSV4OPEN_NOCREATE); 400 if (reclaim) { 401 *tl = txdr_unsigned(NFSV4OPEN_CLAIMPREVIOUS); 402 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 403 *tl = txdr_unsigned(delegtype); 404 } else { 405 if (dp != NULL) { 406 *tl = txdr_unsigned(NFSV4OPEN_CLAIMDELEGATECUR); 407 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID); 408 if (NFSHASNFSV4N(nmp)) 409 *tl++ = 0; 410 else 411 *tl++ = dp->nfsdl_stateid.seqid; 412 *tl++ = dp->nfsdl_stateid.other[0]; 413 *tl++ = dp->nfsdl_stateid.other[1]; 414 *tl = dp->nfsdl_stateid.other[2]; 415 } else { 416 *tl = txdr_unsigned(NFSV4OPEN_CLAIMNULL); 417 } 418 (void) nfsm_strtom(nd, name, namelen); 419 } 420 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 421 *tl = txdr_unsigned(NFSV4OP_GETATTR); 422 NFSZERO_ATTRBIT(&attrbits); 423 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_CHANGE); 424 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_TIMEMODIFY); 425 (void) nfsrv_putattrbit(nd, &attrbits); 426 if (syscred) 427 nd->nd_flag |= ND_USEGSSNAME; 428 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, vp, p, cred, 429 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 430 if (error) 431 return (error); 432 NFSCL_INCRSEQID(op->nfso_own->nfsow_seqid, nd); 433 if (!nd->nd_repstat) { 434 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID + 435 6 * NFSX_UNSIGNED); 436 op->nfso_stateid.seqid = *tl++; 437 op->nfso_stateid.other[0] = *tl++; 438 op->nfso_stateid.other[1] = *tl++; 439 op->nfso_stateid.other[2] = *tl; 440 rflags = fxdr_unsigned(u_int32_t, *(tl + 6)); 441 error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL); 442 if (error) 443 goto nfsmout; 444 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 445 deleg = fxdr_unsigned(u_int32_t, *tl); 446 if (deleg == NFSV4OPEN_DELEGATEREAD || 447 deleg == NFSV4OPEN_DELEGATEWRITE) { 448 if (!(op->nfso_own->nfsow_clp->nfsc_flags & 449 NFSCLFLAGS_FIRSTDELEG)) 450 op->nfso_own->nfsow_clp->nfsc_flags |= 451 (NFSCLFLAGS_FIRSTDELEG | NFSCLFLAGS_GOTDELEG); 452 MALLOC(ndp, struct nfscldeleg *, 453 sizeof (struct nfscldeleg) + newfhlen, 454 M_NFSCLDELEG, M_WAITOK); 455 LIST_INIT(&ndp->nfsdl_owner); 456 LIST_INIT(&ndp->nfsdl_lock); 457 ndp->nfsdl_clp = op->nfso_own->nfsow_clp; 458 ndp->nfsdl_fhlen = newfhlen; 459 NFSBCOPY(newfhp, ndp->nfsdl_fh, newfhlen); 460 newnfs_copyincred(cred, &ndp->nfsdl_cred); 461 nfscl_lockinit(&ndp->nfsdl_rwlock); 462 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID + 463 NFSX_UNSIGNED); 464 ndp->nfsdl_stateid.seqid = *tl++; 465 ndp->nfsdl_stateid.other[0] = *tl++; 466 ndp->nfsdl_stateid.other[1] = *tl++; 467 ndp->nfsdl_stateid.other[2] = *tl++; 468 ret = fxdr_unsigned(int, *tl); 469 if (deleg == NFSV4OPEN_DELEGATEWRITE) { 470 ndp->nfsdl_flags = NFSCLDL_WRITE; 471 /* 472 * Indicates how much the file can grow. 473 */ 474 NFSM_DISSECT(tl, u_int32_t *, 475 3 * NFSX_UNSIGNED); 476 limitby = fxdr_unsigned(int, *tl++); 477 switch (limitby) { 478 case NFSV4OPEN_LIMITSIZE: 479 ndp->nfsdl_sizelimit = fxdr_hyper(tl); 480 break; 481 case NFSV4OPEN_LIMITBLOCKS: 482 ndp->nfsdl_sizelimit = 483 fxdr_unsigned(u_int64_t, *tl++); 484 ndp->nfsdl_sizelimit *= 485 fxdr_unsigned(u_int64_t, *tl); 486 break; 487 default: 488 error = NFSERR_BADXDR; 489 goto nfsmout; 490 }; 491 } else { 492 ndp->nfsdl_flags = NFSCLDL_READ; 493 } 494 if (ret) 495 ndp->nfsdl_flags |= NFSCLDL_RECALL; 496 error = nfsrv_dissectace(nd, &ndp->nfsdl_ace, &ret, 497 &acesize, p); 498 if (error) 499 goto nfsmout; 500 } else if (deleg != NFSV4OPEN_DELEGATENONE) { 501 error = NFSERR_BADXDR; 502 goto nfsmout; 503 } 504 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 505 error = nfsv4_loadattr(nd, NULL, &nfsva, NULL, 506 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0, 507 NULL, NULL, NULL, p, cred); 508 if (error) 509 goto nfsmout; 510 if (ndp != NULL) { 511 ndp->nfsdl_change = nfsva.na_filerev; 512 ndp->nfsdl_modtime = nfsva.na_mtime; 513 ndp->nfsdl_flags |= NFSCLDL_MODTIMESET; 514 } 515 if (!reclaim && (rflags & NFSV4OPEN_RESULTCONFIRM)) { 516 do { 517 ret = nfsrpc_openconfirm(vp, newfhp, newfhlen, op, 518 cred, p); 519 if (ret == NFSERR_DELAY) 520 (void) nfs_catnap(PZERO, ret, "nfs_open"); 521 } while (ret == NFSERR_DELAY); 522 error = ret; 523 } 524 if ((rflags & NFSV4OPEN_LOCKTYPEPOSIX) || 525 nfscl_assumeposixlocks) 526 op->nfso_posixlock = 1; 527 else 528 op->nfso_posixlock = 0; 529 530 /* 531 * If the server is handing out delegations, but we didn't 532 * get one because an OpenConfirm was required, try the 533 * Open again, to get a delegation. This is a harmless no-op, 534 * from a server's point of view. 535 */ 536 if (!reclaim && (rflags & NFSV4OPEN_RESULTCONFIRM) && 537 (op->nfso_own->nfsow_clp->nfsc_flags & NFSCLFLAGS_GOTDELEG) 538 && !error && dp == NULL && ndp == NULL && !recursed) { 539 do { 540 ret = nfsrpc_openrpc(nmp, vp, nfhp, fhlen, newfhp, 541 newfhlen, mode, op, name, namelen, &ndp, 0, 0x0, 542 cred, p, syscred, 1); 543 if (ret == NFSERR_DELAY) 544 (void) nfs_catnap(PZERO, ret, "nfs_open2"); 545 } while (ret == NFSERR_DELAY); 546 if (ret) { 547 if (ndp != NULL) { 548 FREE((caddr_t)ndp, M_NFSCLDELEG); 549 ndp = NULL; 550 } 551 if (ret == NFSERR_STALECLIENTID || 552 ret == NFSERR_STALEDONTRECOVER || 553 ret == NFSERR_BADSESSION) 554 error = ret; 555 } 556 } 557 } 558 if (nd->nd_repstat != 0 && error == 0) 559 error = nd->nd_repstat; 560 if (error == NFSERR_STALECLIENTID || error == NFSERR_BADSESSION) 561 nfscl_initiate_recovery(op->nfso_own->nfsow_clp); 562 nfsmout: 563 if (!error) 564 *dpp = ndp; 565 else if (ndp != NULL) 566 FREE((caddr_t)ndp, M_NFSCLDELEG); 567 mbuf_freem(nd->nd_mrep); 568 return (error); 569 } 570 571 /* 572 * open downgrade rpc 573 */ 574 APPLESTATIC int 575 nfsrpc_opendowngrade(vnode_t vp, u_int32_t mode, struct nfsclopen *op, 576 struct ucred *cred, NFSPROC_T *p) 577 { 578 u_int32_t *tl; 579 struct nfsrv_descript nfsd, *nd = &nfsd; 580 int error; 581 582 NFSCL_REQSTART(nd, NFSPROC_OPENDOWNGRADE, vp); 583 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID + 3 * NFSX_UNSIGNED); 584 if (NFSHASNFSV4N(VFSTONFS(vnode_mount(vp)))) 585 *tl++ = 0; 586 else 587 *tl++ = op->nfso_stateid.seqid; 588 *tl++ = op->nfso_stateid.other[0]; 589 *tl++ = op->nfso_stateid.other[1]; 590 *tl++ = op->nfso_stateid.other[2]; 591 *tl++ = txdr_unsigned(op->nfso_own->nfsow_seqid); 592 *tl++ = txdr_unsigned(mode & NFSV4OPEN_ACCESSBOTH); 593 *tl = txdr_unsigned((mode >> NFSLCK_SHIFT) & NFSV4OPEN_DENYBOTH); 594 error = nfscl_request(nd, vp, p, cred, NULL); 595 if (error) 596 return (error); 597 NFSCL_INCRSEQID(op->nfso_own->nfsow_seqid, nd); 598 if (!nd->nd_repstat) { 599 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID); 600 op->nfso_stateid.seqid = *tl++; 601 op->nfso_stateid.other[0] = *tl++; 602 op->nfso_stateid.other[1] = *tl++; 603 op->nfso_stateid.other[2] = *tl; 604 } 605 if (nd->nd_repstat && error == 0) 606 error = nd->nd_repstat; 607 if (error == NFSERR_STALESTATEID || error == NFSERR_BADSESSION) 608 nfscl_initiate_recovery(op->nfso_own->nfsow_clp); 609 nfsmout: 610 mbuf_freem(nd->nd_mrep); 611 return (error); 612 } 613 614 /* 615 * V4 Close operation. 616 */ 617 APPLESTATIC int 618 nfsrpc_close(vnode_t vp, int doclose, NFSPROC_T *p) 619 { 620 struct nfsclclient *clp; 621 int error; 622 623 if (vnode_vtype(vp) != VREG) 624 return (0); 625 if (doclose) 626 error = nfscl_doclose(vp, &clp, p); 627 else 628 error = nfscl_getclose(vp, &clp); 629 if (error) 630 return (error); 631 632 nfscl_clientrelease(clp); 633 return (0); 634 } 635 636 /* 637 * Close the open. 638 */ 639 APPLESTATIC void 640 nfsrpc_doclose(struct nfsmount *nmp, struct nfsclopen *op, NFSPROC_T *p) 641 { 642 struct nfsrv_descript nfsd, *nd = &nfsd; 643 struct nfscllockowner *lp, *nlp; 644 struct nfscllock *lop, *nlop; 645 struct ucred *tcred; 646 u_int64_t off = 0, len = 0; 647 u_int32_t type = NFSV4LOCKT_READ; 648 int error, do_unlock, trycnt; 649 650 tcred = newnfs_getcred(); 651 newnfs_copycred(&op->nfso_cred, tcred); 652 /* 653 * (Theoretically this could be done in the same 654 * compound as the close, but having multiple 655 * sequenced Ops in the same compound might be 656 * too scary for some servers.) 657 */ 658 if (op->nfso_posixlock) { 659 off = 0; 660 len = NFS64BITSSET; 661 type = NFSV4LOCKT_READ; 662 } 663 664 /* 665 * Since this function is only called from VOP_INACTIVE(), no 666 * other thread will be manipulating this Open. As such, the 667 * lock lists are not being changed by other threads, so it should 668 * be safe to do this without locking. 669 */ 670 LIST_FOREACH(lp, &op->nfso_lock, nfsl_list) { 671 do_unlock = 1; 672 LIST_FOREACH_SAFE(lop, &lp->nfsl_lock, nfslo_list, nlop) { 673 if (op->nfso_posixlock == 0) { 674 off = lop->nfslo_first; 675 len = lop->nfslo_end - lop->nfslo_first; 676 if (lop->nfslo_type == F_WRLCK) 677 type = NFSV4LOCKT_WRITE; 678 else 679 type = NFSV4LOCKT_READ; 680 } 681 if (do_unlock) { 682 trycnt = 0; 683 do { 684 error = nfsrpc_locku(nd, nmp, lp, off, 685 len, type, tcred, p, 0); 686 if ((nd->nd_repstat == NFSERR_GRACE || 687 nd->nd_repstat == NFSERR_DELAY) && 688 error == 0) 689 (void) nfs_catnap(PZERO, 690 (int)nd->nd_repstat, 691 "nfs_close"); 692 } while ((nd->nd_repstat == NFSERR_GRACE || 693 nd->nd_repstat == NFSERR_DELAY) && 694 error == 0 && trycnt++ < 5); 695 if (op->nfso_posixlock) 696 do_unlock = 0; 697 } 698 nfscl_freelock(lop, 0); 699 } 700 /* 701 * Do a ReleaseLockOwner. 702 * The lock owner name nfsl_owner may be used by other opens for 703 * other files but the lock_owner4 name that nfsrpc_rellockown() 704 * puts on the wire has the file handle for this file appended 705 * to it, so it can be done now. 706 */ 707 (void)nfsrpc_rellockown(nmp, lp, lp->nfsl_open->nfso_fh, 708 lp->nfsl_open->nfso_fhlen, tcred, p); 709 } 710 711 /* 712 * There could be other Opens for different files on the same 713 * OpenOwner, so locking is required. 714 */ 715 NFSLOCKCLSTATE(); 716 nfscl_lockexcl(&op->nfso_own->nfsow_rwlock, NFSCLSTATEMUTEXPTR); 717 NFSUNLOCKCLSTATE(); 718 do { 719 error = nfscl_tryclose(op, tcred, nmp, p); 720 if (error == NFSERR_GRACE) 721 (void) nfs_catnap(PZERO, error, "nfs_close"); 722 } while (error == NFSERR_GRACE); 723 NFSLOCKCLSTATE(); 724 nfscl_lockunlock(&op->nfso_own->nfsow_rwlock); 725 726 LIST_FOREACH_SAFE(lp, &op->nfso_lock, nfsl_list, nlp) 727 nfscl_freelockowner(lp, 0); 728 nfscl_freeopen(op, 0); 729 NFSUNLOCKCLSTATE(); 730 NFSFREECRED(tcred); 731 } 732 733 /* 734 * The actual Close RPC. 735 */ 736 APPLESTATIC int 737 nfsrpc_closerpc(struct nfsrv_descript *nd, struct nfsmount *nmp, 738 struct nfsclopen *op, struct ucred *cred, NFSPROC_T *p, 739 int syscred) 740 { 741 u_int32_t *tl; 742 int error; 743 744 nfscl_reqstart(nd, NFSPROC_CLOSE, nmp, op->nfso_fh, 745 op->nfso_fhlen, NULL, NULL); 746 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED + NFSX_STATEID); 747 *tl++ = txdr_unsigned(op->nfso_own->nfsow_seqid); 748 if (NFSHASNFSV4N(nmp)) 749 *tl++ = 0; 750 else 751 *tl++ = op->nfso_stateid.seqid; 752 *tl++ = op->nfso_stateid.other[0]; 753 *tl++ = op->nfso_stateid.other[1]; 754 *tl = op->nfso_stateid.other[2]; 755 if (syscred) 756 nd->nd_flag |= ND_USEGSSNAME; 757 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 758 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 759 if (error) 760 return (error); 761 NFSCL_INCRSEQID(op->nfso_own->nfsow_seqid, nd); 762 if (nd->nd_repstat == 0) 763 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID); 764 error = nd->nd_repstat; 765 if (error == NFSERR_STALESTATEID || error == NFSERR_BADSESSION) 766 nfscl_initiate_recovery(op->nfso_own->nfsow_clp); 767 nfsmout: 768 mbuf_freem(nd->nd_mrep); 769 return (error); 770 } 771 772 /* 773 * V4 Open Confirm RPC. 774 */ 775 APPLESTATIC int 776 nfsrpc_openconfirm(vnode_t vp, u_int8_t *nfhp, int fhlen, 777 struct nfsclopen *op, struct ucred *cred, NFSPROC_T *p) 778 { 779 u_int32_t *tl; 780 struct nfsrv_descript nfsd, *nd = &nfsd; 781 struct nfsmount *nmp; 782 int error; 783 784 nmp = VFSTONFS(vnode_mount(vp)); 785 if (NFSHASNFSV4N(nmp)) 786 return (0); /* No confirmation for NFSv4.1. */ 787 nfscl_reqstart(nd, NFSPROC_OPENCONFIRM, nmp, nfhp, fhlen, NULL, NULL); 788 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED + NFSX_STATEID); 789 *tl++ = op->nfso_stateid.seqid; 790 *tl++ = op->nfso_stateid.other[0]; 791 *tl++ = op->nfso_stateid.other[1]; 792 *tl++ = op->nfso_stateid.other[2]; 793 *tl = txdr_unsigned(op->nfso_own->nfsow_seqid); 794 error = nfscl_request(nd, vp, p, cred, NULL); 795 if (error) 796 return (error); 797 NFSCL_INCRSEQID(op->nfso_own->nfsow_seqid, nd); 798 if (!nd->nd_repstat) { 799 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID); 800 op->nfso_stateid.seqid = *tl++; 801 op->nfso_stateid.other[0] = *tl++; 802 op->nfso_stateid.other[1] = *tl++; 803 op->nfso_stateid.other[2] = *tl; 804 } 805 error = nd->nd_repstat; 806 if (error == NFSERR_STALESTATEID || error == NFSERR_BADSESSION) 807 nfscl_initiate_recovery(op->nfso_own->nfsow_clp); 808 nfsmout: 809 mbuf_freem(nd->nd_mrep); 810 return (error); 811 } 812 813 /* 814 * Do the setclientid and setclientid confirm RPCs. Called from nfs_statfs() 815 * when a mount has just occurred and when the server replies NFSERR_EXPIRED. 816 */ 817 APPLESTATIC int 818 nfsrpc_setclient(struct nfsmount *nmp, struct nfsclclient *clp, int reclaim, 819 struct ucred *cred, NFSPROC_T *p) 820 { 821 u_int32_t *tl; 822 struct nfsrv_descript nfsd; 823 struct nfsrv_descript *nd = &nfsd; 824 nfsattrbit_t attrbits; 825 u_int8_t *cp = NULL, *cp2, addr[INET6_ADDRSTRLEN + 9]; 826 u_short port; 827 int error, isinet6 = 0, callblen; 828 nfsquad_t confirm; 829 u_int32_t lease; 830 static u_int32_t rev = 0; 831 struct nfsclds *dsp, *ndsp, *tdsp; 832 833 if (nfsboottime.tv_sec == 0) 834 NFSSETBOOTTIME(nfsboottime); 835 clp->nfsc_rev = rev++; 836 if (NFSHASNFSV4N(nmp)) { 837 error = nfsrpc_exchangeid(nmp, clp, &nmp->nm_sockreq, 838 NFSV4EXCH_USEPNFSMDS | NFSV4EXCH_USENONPNFS, &dsp, cred, p); 839 NFSCL_DEBUG(1, "aft exch=%d\n", error); 840 if (error == 0) { 841 error = nfsrpc_createsession(nmp, &dsp->nfsclds_sess, 842 &nmp->nm_sockreq, 843 dsp->nfsclds_sess.nfsess_sequenceid, 1, cred, p); 844 if (error == 0) { 845 NFSLOCKMNT(nmp); 846 TAILQ_FOREACH_SAFE(tdsp, &nmp->nm_sess, 847 nfsclds_list, ndsp) 848 nfscl_freenfsclds(tdsp); 849 TAILQ_INIT(&nmp->nm_sess); 850 TAILQ_INSERT_HEAD(&nmp->nm_sess, dsp, 851 nfsclds_list); 852 NFSUNLOCKMNT(nmp); 853 } else 854 nfscl_freenfsclds(dsp); 855 NFSCL_DEBUG(1, "aft createsess=%d\n", error); 856 } 857 if (error == 0 && reclaim == 0) { 858 error = nfsrpc_reclaimcomplete(nmp, cred, p); 859 NFSCL_DEBUG(1, "aft reclaimcomp=%d\n", error); 860 if (error == NFSERR_COMPLETEALREADY || 861 error == NFSERR_NOTSUPP) 862 /* Ignore this error. */ 863 error = 0; 864 } 865 return (error); 866 } 867 868 /* 869 * Allocate a single session structure for NFSv4.0, because some of 870 * the fields are used by NFSv4.0 although it doesn't do a session. 871 */ 872 dsp = malloc(sizeof(struct nfsclds), M_NFSCLDS, M_WAITOK | M_ZERO); 873 mtx_init(&dsp->nfsclds_mtx, "nfsds", NULL, MTX_DEF); 874 mtx_init(&dsp->nfsclds_sess.nfsess_mtx, "nfssession", NULL, MTX_DEF); 875 NFSLOCKMNT(nmp); 876 TAILQ_INSERT_HEAD(&nmp->nm_sess, dsp, nfsclds_list); 877 NFSUNLOCKMNT(nmp); 878 879 nfscl_reqstart(nd, NFSPROC_SETCLIENTID, nmp, NULL, 0, NULL, NULL); 880 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 881 *tl++ = txdr_unsigned(nfsboottime.tv_sec); 882 *tl = txdr_unsigned(clp->nfsc_rev); 883 (void) nfsm_strtom(nd, clp->nfsc_id, clp->nfsc_idlen); 884 885 /* 886 * set up the callback address 887 */ 888 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 889 *tl = txdr_unsigned(NFS_CALLBCKPROG); 890 callblen = strlen(nfsv4_callbackaddr); 891 if (callblen == 0) 892 cp = nfscl_getmyip(nmp, &isinet6); 893 if (nfscl_enablecallb && nfs_numnfscbd > 0 && 894 (callblen > 0 || cp != NULL)) { 895 port = htons(nfsv4_cbport); 896 cp2 = (u_int8_t *)&port; 897 #ifdef INET6 898 if ((callblen > 0 && 899 strchr(nfsv4_callbackaddr, ':')) || isinet6) { 900 char ip6buf[INET6_ADDRSTRLEN], *ip6add; 901 902 (void) nfsm_strtom(nd, "tcp6", 4); 903 if (callblen == 0) { 904 ip6_sprintf(ip6buf, (struct in6_addr *)cp); 905 ip6add = ip6buf; 906 } else { 907 ip6add = nfsv4_callbackaddr; 908 } 909 snprintf(addr, INET6_ADDRSTRLEN + 9, "%s.%d.%d", 910 ip6add, cp2[0], cp2[1]); 911 } else 912 #endif 913 { 914 (void) nfsm_strtom(nd, "tcp", 3); 915 if (callblen == 0) 916 snprintf(addr, INET6_ADDRSTRLEN + 9, 917 "%d.%d.%d.%d.%d.%d", cp[0], cp[1], 918 cp[2], cp[3], cp2[0], cp2[1]); 919 else 920 snprintf(addr, INET6_ADDRSTRLEN + 9, 921 "%s.%d.%d", nfsv4_callbackaddr, 922 cp2[0], cp2[1]); 923 } 924 (void) nfsm_strtom(nd, addr, strlen(addr)); 925 } else { 926 (void) nfsm_strtom(nd, "tcp", 3); 927 (void) nfsm_strtom(nd, "0.0.0.0.0.0", 11); 928 } 929 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 930 *tl = txdr_unsigned(clp->nfsc_cbident); 931 nd->nd_flag |= ND_USEGSSNAME; 932 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 933 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 934 if (error) 935 return (error); 936 if (nd->nd_repstat == 0) { 937 NFSM_DISSECT(tl, u_int32_t *, 4 * NFSX_UNSIGNED); 938 NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[0] = *tl++; 939 NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[1] = *tl++; 940 confirm.lval[0] = *tl++; 941 confirm.lval[1] = *tl; 942 mbuf_freem(nd->nd_mrep); 943 nd->nd_mrep = NULL; 944 945 /* 946 * and confirm it. 947 */ 948 nfscl_reqstart(nd, NFSPROC_SETCLIENTIDCFRM, nmp, NULL, 0, NULL, 949 NULL); 950 NFSM_BUILD(tl, u_int32_t *, 4 * NFSX_UNSIGNED); 951 *tl++ = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[0]; 952 *tl++ = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[1]; 953 *tl++ = confirm.lval[0]; 954 *tl = confirm.lval[1]; 955 nd->nd_flag |= ND_USEGSSNAME; 956 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, 957 cred, NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 958 if (error) 959 return (error); 960 mbuf_freem(nd->nd_mrep); 961 nd->nd_mrep = NULL; 962 if (nd->nd_repstat == 0) { 963 nfscl_reqstart(nd, NFSPROC_GETATTR, nmp, nmp->nm_fh, 964 nmp->nm_fhsize, NULL, NULL); 965 NFSZERO_ATTRBIT(&attrbits); 966 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_LEASETIME); 967 (void) nfsrv_putattrbit(nd, &attrbits); 968 nd->nd_flag |= ND_USEGSSNAME; 969 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, 970 cred, NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 971 if (error) 972 return (error); 973 if (nd->nd_repstat == 0) { 974 error = nfsv4_loadattr(nd, NULL, NULL, NULL, NULL, 0, NULL, 975 NULL, NULL, NULL, NULL, 0, NULL, &lease, NULL, p, cred); 976 if (error) 977 goto nfsmout; 978 clp->nfsc_renew = NFSCL_RENEW(lease); 979 clp->nfsc_expire = NFSD_MONOSEC + clp->nfsc_renew; 980 clp->nfsc_clientidrev++; 981 if (clp->nfsc_clientidrev == 0) 982 clp->nfsc_clientidrev++; 983 } 984 } 985 } 986 error = nd->nd_repstat; 987 nfsmout: 988 mbuf_freem(nd->nd_mrep); 989 return (error); 990 } 991 992 /* 993 * nfs getattr call. 994 */ 995 APPLESTATIC int 996 nfsrpc_getattr(vnode_t vp, struct ucred *cred, NFSPROC_T *p, 997 struct nfsvattr *nap, void *stuff) 998 { 999 struct nfsrv_descript nfsd, *nd = &nfsd; 1000 int error; 1001 nfsattrbit_t attrbits; 1002 1003 NFSCL_REQSTART(nd, NFSPROC_GETATTR, vp); 1004 if (nd->nd_flag & ND_NFSV4) { 1005 NFSGETATTR_ATTRBIT(&attrbits); 1006 (void) nfsrv_putattrbit(nd, &attrbits); 1007 } 1008 error = nfscl_request(nd, vp, p, cred, stuff); 1009 if (error) 1010 return (error); 1011 if (!nd->nd_repstat) 1012 error = nfsm_loadattr(nd, nap); 1013 else 1014 error = nd->nd_repstat; 1015 mbuf_freem(nd->nd_mrep); 1016 return (error); 1017 } 1018 1019 /* 1020 * nfs getattr call with non-vnode arguemnts. 1021 */ 1022 APPLESTATIC int 1023 nfsrpc_getattrnovp(struct nfsmount *nmp, u_int8_t *fhp, int fhlen, int syscred, 1024 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, u_int64_t *xidp, 1025 uint32_t *leasep) 1026 { 1027 struct nfsrv_descript nfsd, *nd = &nfsd; 1028 int error, vers = NFS_VER2; 1029 nfsattrbit_t attrbits; 1030 1031 nfscl_reqstart(nd, NFSPROC_GETATTR, nmp, fhp, fhlen, NULL, NULL); 1032 if (nd->nd_flag & ND_NFSV4) { 1033 vers = NFS_VER4; 1034 NFSGETATTR_ATTRBIT(&attrbits); 1035 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_LEASETIME); 1036 (void) nfsrv_putattrbit(nd, &attrbits); 1037 } else if (nd->nd_flag & ND_NFSV3) { 1038 vers = NFS_VER3; 1039 } 1040 if (syscred) 1041 nd->nd_flag |= ND_USEGSSNAME; 1042 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 1043 NFS_PROG, vers, NULL, 1, xidp, NULL); 1044 if (error) 1045 return (error); 1046 if (nd->nd_repstat == 0) { 1047 if ((nd->nd_flag & ND_NFSV4) != 0) 1048 error = nfsv4_loadattr(nd, NULL, nap, NULL, NULL, 0, 1049 NULL, NULL, NULL, NULL, NULL, 0, NULL, leasep, NULL, 1050 NULL, NULL); 1051 else 1052 error = nfsm_loadattr(nd, nap); 1053 } else 1054 error = nd->nd_repstat; 1055 mbuf_freem(nd->nd_mrep); 1056 return (error); 1057 } 1058 1059 /* 1060 * Do an nfs setattr operation. 1061 */ 1062 APPLESTATIC int 1063 nfsrpc_setattr(vnode_t vp, struct vattr *vap, NFSACL_T *aclp, 1064 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *rnap, int *attrflagp, 1065 void *stuff) 1066 { 1067 int error, expireret = 0, openerr, retrycnt; 1068 u_int32_t clidrev = 0, mode; 1069 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 1070 struct nfsfh *nfhp; 1071 nfsv4stateid_t stateid; 1072 void *lckp; 1073 1074 if (nmp->nm_clp != NULL) 1075 clidrev = nmp->nm_clp->nfsc_clientidrev; 1076 if (vap != NULL && NFSATTRISSET(u_quad_t, vap, va_size)) 1077 mode = NFSV4OPEN_ACCESSWRITE; 1078 else 1079 mode = NFSV4OPEN_ACCESSREAD; 1080 retrycnt = 0; 1081 do { 1082 lckp = NULL; 1083 openerr = 1; 1084 if (NFSHASNFSV4(nmp)) { 1085 nfhp = VTONFS(vp)->n_fhp; 1086 error = nfscl_getstateid(vp, nfhp->nfh_fh, 1087 nfhp->nfh_len, mode, 0, cred, p, &stateid, &lckp); 1088 if (error && vnode_vtype(vp) == VREG && 1089 (mode == NFSV4OPEN_ACCESSWRITE || 1090 nfstest_openallsetattr)) { 1091 /* 1092 * No Open stateid, so try and open the file 1093 * now. 1094 */ 1095 if (mode == NFSV4OPEN_ACCESSWRITE) 1096 openerr = nfsrpc_open(vp, FWRITE, cred, 1097 p); 1098 else 1099 openerr = nfsrpc_open(vp, FREAD, cred, 1100 p); 1101 if (!openerr) 1102 (void) nfscl_getstateid(vp, 1103 nfhp->nfh_fh, nfhp->nfh_len, 1104 mode, 0, cred, p, &stateid, &lckp); 1105 } 1106 } 1107 if (vap != NULL) 1108 error = nfsrpc_setattrrpc(vp, vap, &stateid, cred, p, 1109 rnap, attrflagp, stuff); 1110 else 1111 error = nfsrpc_setaclrpc(vp, cred, p, aclp, &stateid, 1112 stuff); 1113 if (error == NFSERR_STALESTATEID || error == NFSERR_BADSESSION) 1114 nfscl_initiate_recovery(nmp->nm_clp); 1115 if (lckp != NULL) 1116 nfscl_lockderef(lckp); 1117 if (!openerr) 1118 (void) nfsrpc_close(vp, 0, p); 1119 if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 1120 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 1121 error == NFSERR_OLDSTATEID || error == NFSERR_BADSESSION) { 1122 (void) nfs_catnap(PZERO, error, "nfs_setattr"); 1123 } else if ((error == NFSERR_EXPIRED || 1124 error == NFSERR_BADSTATEID) && clidrev != 0) { 1125 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p); 1126 } 1127 retrycnt++; 1128 } while (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 1129 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 1130 error == NFSERR_BADSESSION || 1131 (error == NFSERR_OLDSTATEID && retrycnt < 20) || 1132 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) && 1133 expireret == 0 && clidrev != 0 && retrycnt < 4)); 1134 if (error && retrycnt >= 4) 1135 error = EIO; 1136 return (error); 1137 } 1138 1139 static int 1140 nfsrpc_setattrrpc(vnode_t vp, struct vattr *vap, 1141 nfsv4stateid_t *stateidp, struct ucred *cred, NFSPROC_T *p, 1142 struct nfsvattr *rnap, int *attrflagp, void *stuff) 1143 { 1144 u_int32_t *tl; 1145 struct nfsrv_descript nfsd, *nd = &nfsd; 1146 int error; 1147 nfsattrbit_t attrbits; 1148 1149 *attrflagp = 0; 1150 NFSCL_REQSTART(nd, NFSPROC_SETATTR, vp); 1151 if (nd->nd_flag & ND_NFSV4) 1152 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID); 1153 vap->va_type = vnode_vtype(vp); 1154 nfscl_fillsattr(nd, vap, vp, NFSSATTR_FULL, 0); 1155 if (nd->nd_flag & ND_NFSV3) { 1156 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1157 *tl = newnfs_false; 1158 } else if (nd->nd_flag & ND_NFSV4) { 1159 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1160 *tl = txdr_unsigned(NFSV4OP_GETATTR); 1161 NFSGETATTR_ATTRBIT(&attrbits); 1162 (void) nfsrv_putattrbit(nd, &attrbits); 1163 } 1164 error = nfscl_request(nd, vp, p, cred, stuff); 1165 if (error) 1166 return (error); 1167 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) 1168 error = nfscl_wcc_data(nd, vp, rnap, attrflagp, NULL, stuff); 1169 if ((nd->nd_flag & ND_NFSV4) && !error) 1170 error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL); 1171 if (!(nd->nd_flag & ND_NFSV3) && !nd->nd_repstat && !error) 1172 error = nfscl_postop_attr(nd, rnap, attrflagp, stuff); 1173 mbuf_freem(nd->nd_mrep); 1174 if (nd->nd_repstat && !error) 1175 error = nd->nd_repstat; 1176 return (error); 1177 } 1178 1179 /* 1180 * nfs lookup rpc 1181 */ 1182 APPLESTATIC int 1183 nfsrpc_lookup(vnode_t dvp, char *name, int len, struct ucred *cred, 1184 NFSPROC_T *p, struct nfsvattr *dnap, struct nfsvattr *nap, 1185 struct nfsfh **nfhpp, int *attrflagp, int *dattrflagp, void *stuff) 1186 { 1187 u_int32_t *tl; 1188 struct nfsrv_descript nfsd, *nd = &nfsd; 1189 struct nfsmount *nmp; 1190 struct nfsnode *np; 1191 struct nfsfh *nfhp; 1192 nfsattrbit_t attrbits; 1193 int error = 0, lookupp = 0; 1194 1195 *attrflagp = 0; 1196 *dattrflagp = 0; 1197 if (vnode_vtype(dvp) != VDIR) 1198 return (ENOTDIR); 1199 nmp = VFSTONFS(vnode_mount(dvp)); 1200 if (len > NFS_MAXNAMLEN) 1201 return (ENAMETOOLONG); 1202 if (NFSHASNFSV4(nmp) && len == 1 && 1203 name[0] == '.') { 1204 /* 1205 * Just return the current dir's fh. 1206 */ 1207 np = VTONFS(dvp); 1208 MALLOC(nfhp, struct nfsfh *, sizeof (struct nfsfh) + 1209 np->n_fhp->nfh_len, M_NFSFH, M_WAITOK); 1210 nfhp->nfh_len = np->n_fhp->nfh_len; 1211 NFSBCOPY(np->n_fhp->nfh_fh, nfhp->nfh_fh, nfhp->nfh_len); 1212 *nfhpp = nfhp; 1213 return (0); 1214 } 1215 if (NFSHASNFSV4(nmp) && len == 2 && 1216 name[0] == '.' && name[1] == '.') { 1217 lookupp = 1; 1218 NFSCL_REQSTART(nd, NFSPROC_LOOKUPP, dvp); 1219 } else { 1220 NFSCL_REQSTART(nd, NFSPROC_LOOKUP, dvp); 1221 (void) nfsm_strtom(nd, name, len); 1222 } 1223 if (nd->nd_flag & ND_NFSV4) { 1224 NFSGETATTR_ATTRBIT(&attrbits); 1225 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1226 *tl++ = txdr_unsigned(NFSV4OP_GETFH); 1227 *tl = txdr_unsigned(NFSV4OP_GETATTR); 1228 (void) nfsrv_putattrbit(nd, &attrbits); 1229 } 1230 error = nfscl_request(nd, dvp, p, cred, stuff); 1231 if (error) 1232 return (error); 1233 if (nd->nd_repstat) { 1234 /* 1235 * When an NFSv4 Lookupp returns ENOENT, it means that 1236 * the lookup is at the root of an fs, so return this dir. 1237 */ 1238 if (nd->nd_repstat == NFSERR_NOENT && lookupp) { 1239 np = VTONFS(dvp); 1240 MALLOC(nfhp, struct nfsfh *, sizeof (struct nfsfh) + 1241 np->n_fhp->nfh_len, M_NFSFH, M_WAITOK); 1242 nfhp->nfh_len = np->n_fhp->nfh_len; 1243 NFSBCOPY(np->n_fhp->nfh_fh, nfhp->nfh_fh, nfhp->nfh_len); 1244 *nfhpp = nfhp; 1245 mbuf_freem(nd->nd_mrep); 1246 return (0); 1247 } 1248 if (nd->nd_flag & ND_NFSV3) 1249 error = nfscl_postop_attr(nd, dnap, dattrflagp, stuff); 1250 else if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == 1251 ND_NFSV4) { 1252 /* Load the directory attributes. */ 1253 error = nfsm_loadattr(nd, dnap); 1254 if (error == 0) 1255 *dattrflagp = 1; 1256 } 1257 goto nfsmout; 1258 } 1259 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == ND_NFSV4) { 1260 /* Load the directory attributes. */ 1261 error = nfsm_loadattr(nd, dnap); 1262 if (error != 0) 1263 goto nfsmout; 1264 *dattrflagp = 1; 1265 /* Skip over the Lookup and GetFH operation status values. */ 1266 NFSM_DISSECT(tl, u_int32_t *, 4 * NFSX_UNSIGNED); 1267 } 1268 error = nfsm_getfh(nd, nfhpp); 1269 if (error) 1270 goto nfsmout; 1271 1272 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 1273 if ((nd->nd_flag & ND_NFSV3) && !error) 1274 error = nfscl_postop_attr(nd, dnap, dattrflagp, stuff); 1275 nfsmout: 1276 mbuf_freem(nd->nd_mrep); 1277 if (!error && nd->nd_repstat) 1278 error = nd->nd_repstat; 1279 return (error); 1280 } 1281 1282 /* 1283 * Do a readlink rpc. 1284 */ 1285 APPLESTATIC int 1286 nfsrpc_readlink(vnode_t vp, struct uio *uiop, struct ucred *cred, 1287 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff) 1288 { 1289 u_int32_t *tl; 1290 struct nfsrv_descript nfsd, *nd = &nfsd; 1291 struct nfsnode *np = VTONFS(vp); 1292 nfsattrbit_t attrbits; 1293 int error, len, cangetattr = 1; 1294 1295 *attrflagp = 0; 1296 NFSCL_REQSTART(nd, NFSPROC_READLINK, vp); 1297 if (nd->nd_flag & ND_NFSV4) { 1298 /* 1299 * And do a Getattr op. 1300 */ 1301 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1302 *tl = txdr_unsigned(NFSV4OP_GETATTR); 1303 NFSGETATTR_ATTRBIT(&attrbits); 1304 (void) nfsrv_putattrbit(nd, &attrbits); 1305 } 1306 error = nfscl_request(nd, vp, p, cred, stuff); 1307 if (error) 1308 return (error); 1309 if (nd->nd_flag & ND_NFSV3) 1310 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 1311 if (!nd->nd_repstat && !error) { 1312 NFSM_STRSIZ(len, NFS_MAXPATHLEN); 1313 /* 1314 * This seems weird to me, but must have been added to 1315 * FreeBSD for some reason. The only thing I can think of 1316 * is that there was/is some server that replies with 1317 * more link data than it should? 1318 */ 1319 if (len == NFS_MAXPATHLEN) { 1320 NFSLOCKNODE(np); 1321 if (np->n_size > 0 && np->n_size < NFS_MAXPATHLEN) { 1322 len = np->n_size; 1323 cangetattr = 0; 1324 } 1325 NFSUNLOCKNODE(np); 1326 } 1327 error = nfsm_mbufuio(nd, uiop, len); 1328 if ((nd->nd_flag & ND_NFSV4) && !error && cangetattr) 1329 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 1330 } 1331 if (nd->nd_repstat && !error) 1332 error = nd->nd_repstat; 1333 nfsmout: 1334 mbuf_freem(nd->nd_mrep); 1335 return (error); 1336 } 1337 1338 /* 1339 * Read operation. 1340 */ 1341 APPLESTATIC int 1342 nfsrpc_read(vnode_t vp, struct uio *uiop, struct ucred *cred, 1343 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff) 1344 { 1345 int error, expireret = 0, retrycnt; 1346 u_int32_t clidrev = 0; 1347 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 1348 struct nfsnode *np = VTONFS(vp); 1349 struct ucred *newcred; 1350 struct nfsfh *nfhp = NULL; 1351 nfsv4stateid_t stateid; 1352 void *lckp; 1353 1354 if (nmp->nm_clp != NULL) 1355 clidrev = nmp->nm_clp->nfsc_clientidrev; 1356 newcred = cred; 1357 if (NFSHASNFSV4(nmp)) { 1358 nfhp = np->n_fhp; 1359 newcred = NFSNEWCRED(cred); 1360 } 1361 retrycnt = 0; 1362 do { 1363 lckp = NULL; 1364 if (NFSHASNFSV4(nmp)) 1365 (void)nfscl_getstateid(vp, nfhp->nfh_fh, nfhp->nfh_len, 1366 NFSV4OPEN_ACCESSREAD, 0, newcred, p, &stateid, 1367 &lckp); 1368 error = nfsrpc_readrpc(vp, uiop, newcred, &stateid, p, nap, 1369 attrflagp, stuff); 1370 if (error == NFSERR_STALESTATEID || error == NFSERR_BADSESSION) 1371 nfscl_initiate_recovery(nmp->nm_clp); 1372 if (lckp != NULL) 1373 nfscl_lockderef(lckp); 1374 if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 1375 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 1376 error == NFSERR_OLDSTATEID || error == NFSERR_BADSESSION) { 1377 (void) nfs_catnap(PZERO, error, "nfs_read"); 1378 } else if ((error == NFSERR_EXPIRED || 1379 error == NFSERR_BADSTATEID) && clidrev != 0) { 1380 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p); 1381 } 1382 retrycnt++; 1383 } while (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 1384 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 1385 error == NFSERR_BADSESSION || 1386 (error == NFSERR_OLDSTATEID && retrycnt < 20) || 1387 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) && 1388 expireret == 0 && clidrev != 0 && retrycnt < 4)); 1389 if (error && retrycnt >= 4) 1390 error = EIO; 1391 if (NFSHASNFSV4(nmp)) 1392 NFSFREECRED(newcred); 1393 return (error); 1394 } 1395 1396 /* 1397 * The actual read RPC. 1398 */ 1399 static int 1400 nfsrpc_readrpc(vnode_t vp, struct uio *uiop, struct ucred *cred, 1401 nfsv4stateid_t *stateidp, NFSPROC_T *p, struct nfsvattr *nap, 1402 int *attrflagp, void *stuff) 1403 { 1404 u_int32_t *tl; 1405 int error = 0, len, retlen, tsiz, eof = 0; 1406 struct nfsrv_descript nfsd; 1407 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 1408 struct nfsrv_descript *nd = &nfsd; 1409 int rsize; 1410 off_t tmp_off; 1411 1412 *attrflagp = 0; 1413 tsiz = uio_uio_resid(uiop); 1414 tmp_off = uiop->uio_offset + tsiz; 1415 NFSLOCKMNT(nmp); 1416 if (tmp_off > nmp->nm_maxfilesize || tmp_off < uiop->uio_offset) { 1417 NFSUNLOCKMNT(nmp); 1418 return (EFBIG); 1419 } 1420 rsize = nmp->nm_rsize; 1421 NFSUNLOCKMNT(nmp); 1422 nd->nd_mrep = NULL; 1423 while (tsiz > 0) { 1424 *attrflagp = 0; 1425 len = (tsiz > rsize) ? rsize : tsiz; 1426 NFSCL_REQSTART(nd, NFSPROC_READ, vp); 1427 if (nd->nd_flag & ND_NFSV4) 1428 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID); 1429 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED * 3); 1430 if (nd->nd_flag & ND_NFSV2) { 1431 *tl++ = txdr_unsigned(uiop->uio_offset); 1432 *tl++ = txdr_unsigned(len); 1433 *tl = 0; 1434 } else { 1435 txdr_hyper(uiop->uio_offset, tl); 1436 *(tl + 2) = txdr_unsigned(len); 1437 } 1438 /* 1439 * Since I can't do a Getattr for NFSv4 for Write, there 1440 * doesn't seem any point in doing one here, either. 1441 * (See the comment in nfsrpc_writerpc() for more info.) 1442 */ 1443 error = nfscl_request(nd, vp, p, cred, stuff); 1444 if (error) 1445 return (error); 1446 if (nd->nd_flag & ND_NFSV3) { 1447 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 1448 } else if (!nd->nd_repstat && (nd->nd_flag & ND_NFSV2)) { 1449 error = nfsm_loadattr(nd, nap); 1450 if (!error) 1451 *attrflagp = 1; 1452 } 1453 if (nd->nd_repstat || error) { 1454 if (!error) 1455 error = nd->nd_repstat; 1456 goto nfsmout; 1457 } 1458 if (nd->nd_flag & ND_NFSV3) { 1459 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1460 eof = fxdr_unsigned(int, *(tl + 1)); 1461 } else if (nd->nd_flag & ND_NFSV4) { 1462 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 1463 eof = fxdr_unsigned(int, *tl); 1464 } 1465 NFSM_STRSIZ(retlen, len); 1466 error = nfsm_mbufuio(nd, uiop, retlen); 1467 if (error) 1468 goto nfsmout; 1469 mbuf_freem(nd->nd_mrep); 1470 nd->nd_mrep = NULL; 1471 tsiz -= retlen; 1472 if (!(nd->nd_flag & ND_NFSV2)) { 1473 if (eof || retlen == 0) 1474 tsiz = 0; 1475 } else if (retlen < len) 1476 tsiz = 0; 1477 } 1478 return (0); 1479 nfsmout: 1480 if (nd->nd_mrep != NULL) 1481 mbuf_freem(nd->nd_mrep); 1482 return (error); 1483 } 1484 1485 /* 1486 * nfs write operation 1487 * When called_from_strategy != 0, it should return EIO for an error that 1488 * indicates recovery is in progress, so that the buffer will be left 1489 * dirty and be written back to the server later. If it loops around, 1490 * the recovery thread could get stuck waiting for the buffer and recovery 1491 * will then deadlock. 1492 */ 1493 APPLESTATIC int 1494 nfsrpc_write(vnode_t vp, struct uio *uiop, int *iomode, int *must_commit, 1495 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, 1496 void *stuff, int called_from_strategy) 1497 { 1498 int error, expireret = 0, retrycnt, nostateid; 1499 u_int32_t clidrev = 0; 1500 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 1501 struct nfsnode *np = VTONFS(vp); 1502 struct ucred *newcred; 1503 struct nfsfh *nfhp = NULL; 1504 nfsv4stateid_t stateid; 1505 void *lckp; 1506 1507 *must_commit = 0; 1508 if (nmp->nm_clp != NULL) 1509 clidrev = nmp->nm_clp->nfsc_clientidrev; 1510 newcred = cred; 1511 if (NFSHASNFSV4(nmp)) { 1512 newcred = NFSNEWCRED(cred); 1513 nfhp = np->n_fhp; 1514 } 1515 retrycnt = 0; 1516 do { 1517 lckp = NULL; 1518 nostateid = 0; 1519 if (NFSHASNFSV4(nmp)) { 1520 (void)nfscl_getstateid(vp, nfhp->nfh_fh, nfhp->nfh_len, 1521 NFSV4OPEN_ACCESSWRITE, 0, newcred, p, &stateid, 1522 &lckp); 1523 if (stateid.other[0] == 0 && stateid.other[1] == 0 && 1524 stateid.other[2] == 0) { 1525 nostateid = 1; 1526 NFSCL_DEBUG(1, "stateid0 in write\n"); 1527 } 1528 } 1529 1530 /* 1531 * If there is no stateid for NFSv4, it means this is an 1532 * extraneous write after close. Basically a poorly 1533 * implemented buffer cache. Just don't do the write. 1534 */ 1535 if (nostateid) 1536 error = 0; 1537 else 1538 error = nfsrpc_writerpc(vp, uiop, iomode, must_commit, 1539 newcred, &stateid, p, nap, attrflagp, stuff); 1540 if (error == NFSERR_STALESTATEID || error == NFSERR_BADSESSION) 1541 nfscl_initiate_recovery(nmp->nm_clp); 1542 if (lckp != NULL) 1543 nfscl_lockderef(lckp); 1544 if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 1545 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 1546 error == NFSERR_OLDSTATEID || error == NFSERR_BADSESSION) { 1547 (void) nfs_catnap(PZERO, error, "nfs_write"); 1548 } else if ((error == NFSERR_EXPIRED || 1549 error == NFSERR_BADSTATEID) && clidrev != 0) { 1550 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p); 1551 } 1552 retrycnt++; 1553 } while (error == NFSERR_GRACE || error == NFSERR_DELAY || 1554 ((error == NFSERR_STALESTATEID || error == NFSERR_BADSESSION || 1555 error == NFSERR_STALEDONTRECOVER) && called_from_strategy == 0) || 1556 (error == NFSERR_OLDSTATEID && retrycnt < 20) || 1557 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) && 1558 expireret == 0 && clidrev != 0 && retrycnt < 4)); 1559 if (error != 0 && (retrycnt >= 4 || 1560 ((error == NFSERR_STALESTATEID || error == NFSERR_BADSESSION || 1561 error == NFSERR_STALEDONTRECOVER) && called_from_strategy != 0))) 1562 error = EIO; 1563 if (NFSHASNFSV4(nmp)) 1564 NFSFREECRED(newcred); 1565 return (error); 1566 } 1567 1568 /* 1569 * The actual write RPC. 1570 */ 1571 static int 1572 nfsrpc_writerpc(vnode_t vp, struct uio *uiop, int *iomode, 1573 int *must_commit, struct ucred *cred, nfsv4stateid_t *stateidp, 1574 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff) 1575 { 1576 u_int32_t *tl; 1577 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 1578 struct nfsnode *np = VTONFS(vp); 1579 int error = 0, len, tsiz, rlen, commit, committed = NFSWRITE_FILESYNC; 1580 int wccflag = 0, wsize; 1581 int32_t backup; 1582 struct nfsrv_descript nfsd; 1583 struct nfsrv_descript *nd = &nfsd; 1584 nfsattrbit_t attrbits; 1585 off_t tmp_off; 1586 1587 KASSERT(uiop->uio_iovcnt == 1, ("nfs: writerpc iovcnt > 1")); 1588 *attrflagp = 0; 1589 tsiz = uio_uio_resid(uiop); 1590 tmp_off = uiop->uio_offset + tsiz; 1591 NFSLOCKMNT(nmp); 1592 if (tmp_off > nmp->nm_maxfilesize || tmp_off < uiop->uio_offset) { 1593 NFSUNLOCKMNT(nmp); 1594 return (EFBIG); 1595 } 1596 wsize = nmp->nm_wsize; 1597 NFSUNLOCKMNT(nmp); 1598 nd->nd_mrep = NULL; /* NFSv2 sometimes does a write with */ 1599 nd->nd_repstat = 0; /* uio_resid == 0, so the while is not done */ 1600 while (tsiz > 0) { 1601 *attrflagp = 0; 1602 len = (tsiz > wsize) ? wsize : tsiz; 1603 NFSCL_REQSTART(nd, NFSPROC_WRITE, vp); 1604 if (nd->nd_flag & ND_NFSV4) { 1605 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID); 1606 NFSM_BUILD(tl, u_int32_t *, NFSX_HYPER+2*NFSX_UNSIGNED); 1607 txdr_hyper(uiop->uio_offset, tl); 1608 tl += 2; 1609 *tl++ = txdr_unsigned(*iomode); 1610 *tl = txdr_unsigned(len); 1611 } else if (nd->nd_flag & ND_NFSV3) { 1612 NFSM_BUILD(tl, u_int32_t *, NFSX_HYPER+3*NFSX_UNSIGNED); 1613 txdr_hyper(uiop->uio_offset, tl); 1614 tl += 2; 1615 *tl++ = txdr_unsigned(len); 1616 *tl++ = txdr_unsigned(*iomode); 1617 *tl = txdr_unsigned(len); 1618 } else { 1619 u_int32_t x; 1620 1621 NFSM_BUILD(tl, u_int32_t *, 4 * NFSX_UNSIGNED); 1622 /* 1623 * Not sure why someone changed this, since the 1624 * RFC clearly states that "beginoffset" and 1625 * "totalcount" are ignored, but it wouldn't 1626 * surprise me if there's a busted server out there. 1627 */ 1628 /* Set both "begin" and "current" to non-garbage. */ 1629 x = txdr_unsigned((u_int32_t)uiop->uio_offset); 1630 *tl++ = x; /* "begin offset" */ 1631 *tl++ = x; /* "current offset" */ 1632 x = txdr_unsigned(len); 1633 *tl++ = x; /* total to this offset */ 1634 *tl = x; /* size of this write */ 1635 1636 } 1637 nfsm_uiombuf(nd, uiop, len); 1638 /* 1639 * Although it is tempting to do a normal Getattr Op in the 1640 * NFSv4 compound, the result can be a nearly hung client 1641 * system if the Getattr asks for Owner and/or OwnerGroup. 1642 * It occurs when the client can't map either the Owner or 1643 * Owner_group name in the Getattr reply to a uid/gid. When 1644 * there is a cache miss, the kernel does an upcall to the 1645 * nfsuserd. Then, it can try and read the local /etc/passwd 1646 * or /etc/group file. It can then block in getnewbuf(), 1647 * waiting for dirty writes to be pushed to the NFS server. 1648 * The only reason this doesn't result in a complete 1649 * deadlock, is that the upcall times out and allows 1650 * the write to complete. However, progress is so slow 1651 * that it might just as well be deadlocked. 1652 * As such, we get the rest of the attributes, but not 1653 * Owner or Owner_group. 1654 * nb: nfscl_loadattrcache() needs to be told that these 1655 * partial attributes from a write rpc are being 1656 * passed in, via a argument flag. 1657 */ 1658 if (nd->nd_flag & ND_NFSV4) { 1659 NFSWRITEGETATTR_ATTRBIT(&attrbits); 1660 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1661 *tl = txdr_unsigned(NFSV4OP_GETATTR); 1662 (void) nfsrv_putattrbit(nd, &attrbits); 1663 } 1664 error = nfscl_request(nd, vp, p, cred, stuff); 1665 if (error) 1666 return (error); 1667 if (nd->nd_repstat) { 1668 /* 1669 * In case the rpc gets retried, roll 1670 * the uio fileds changed by nfsm_uiombuf() 1671 * back. 1672 */ 1673 uiop->uio_offset -= len; 1674 uio_uio_resid_add(uiop, len); 1675 uio_iov_base_add(uiop, -len); 1676 uio_iov_len_add(uiop, len); 1677 } 1678 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) { 1679 error = nfscl_wcc_data(nd, vp, nap, attrflagp, 1680 &wccflag, stuff); 1681 if (error) 1682 goto nfsmout; 1683 } 1684 if (!nd->nd_repstat) { 1685 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) { 1686 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED 1687 + NFSX_VERF); 1688 rlen = fxdr_unsigned(int, *tl++); 1689 if (rlen == 0) { 1690 error = NFSERR_IO; 1691 goto nfsmout; 1692 } else if (rlen < len) { 1693 backup = len - rlen; 1694 uio_iov_base_add(uiop, -(backup)); 1695 uio_iov_len_add(uiop, backup); 1696 uiop->uio_offset -= backup; 1697 uio_uio_resid_add(uiop, backup); 1698 len = rlen; 1699 } 1700 commit = fxdr_unsigned(int, *tl++); 1701 1702 /* 1703 * Return the lowest committment level 1704 * obtained by any of the RPCs. 1705 */ 1706 if (committed == NFSWRITE_FILESYNC) 1707 committed = commit; 1708 else if (committed == NFSWRITE_DATASYNC && 1709 commit == NFSWRITE_UNSTABLE) 1710 committed = commit; 1711 NFSLOCKMNT(nmp); 1712 if (!NFSHASWRITEVERF(nmp)) { 1713 NFSBCOPY((caddr_t)tl, 1714 (caddr_t)&nmp->nm_verf[0], 1715 NFSX_VERF); 1716 NFSSETWRITEVERF(nmp); 1717 } else if (NFSBCMP(tl, nmp->nm_verf, 1718 NFSX_VERF)) { 1719 *must_commit = 1; 1720 NFSBCOPY(tl, nmp->nm_verf, NFSX_VERF); 1721 } 1722 NFSUNLOCKMNT(nmp); 1723 } 1724 if (nd->nd_flag & ND_NFSV4) 1725 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1726 if (nd->nd_flag & (ND_NFSV2 | ND_NFSV4)) { 1727 error = nfsm_loadattr(nd, nap); 1728 if (!error) 1729 *attrflagp = NFS_LATTR_NOSHRINK; 1730 } 1731 } else { 1732 error = nd->nd_repstat; 1733 } 1734 if (error) 1735 goto nfsmout; 1736 NFSWRITERPC_SETTIME(wccflag, np, (nd->nd_flag & ND_NFSV4)); 1737 mbuf_freem(nd->nd_mrep); 1738 nd->nd_mrep = NULL; 1739 tsiz -= len; 1740 } 1741 nfsmout: 1742 if (nd->nd_mrep != NULL) 1743 mbuf_freem(nd->nd_mrep); 1744 *iomode = committed; 1745 if (nd->nd_repstat && !error) 1746 error = nd->nd_repstat; 1747 return (error); 1748 } 1749 1750 /* 1751 * nfs mknod rpc 1752 * For NFS v2 this is a kludge. Use a create rpc but with the IFMT bits of the 1753 * mode set to specify the file type and the size field for rdev. 1754 */ 1755 APPLESTATIC int 1756 nfsrpc_mknod(vnode_t dvp, char *name, int namelen, struct vattr *vap, 1757 u_int32_t rdev, enum vtype vtyp, struct ucred *cred, NFSPROC_T *p, 1758 struct nfsvattr *dnap, struct nfsvattr *nnap, struct nfsfh **nfhpp, 1759 int *attrflagp, int *dattrflagp, void *dstuff) 1760 { 1761 u_int32_t *tl; 1762 int error = 0; 1763 struct nfsrv_descript nfsd, *nd = &nfsd; 1764 nfsattrbit_t attrbits; 1765 1766 *nfhpp = NULL; 1767 *attrflagp = 0; 1768 *dattrflagp = 0; 1769 if (namelen > NFS_MAXNAMLEN) 1770 return (ENAMETOOLONG); 1771 NFSCL_REQSTART(nd, NFSPROC_MKNOD, dvp); 1772 if (nd->nd_flag & ND_NFSV4) { 1773 if (vtyp == VBLK || vtyp == VCHR) { 1774 NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 1775 *tl++ = vtonfsv34_type(vtyp); 1776 *tl++ = txdr_unsigned(NFSMAJOR(rdev)); 1777 *tl = txdr_unsigned(NFSMINOR(rdev)); 1778 } else { 1779 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1780 *tl = vtonfsv34_type(vtyp); 1781 } 1782 } 1783 (void) nfsm_strtom(nd, name, namelen); 1784 if (nd->nd_flag & ND_NFSV3) { 1785 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1786 *tl = vtonfsv34_type(vtyp); 1787 } 1788 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) 1789 nfscl_fillsattr(nd, vap, dvp, 0, 0); 1790 if ((nd->nd_flag & ND_NFSV3) && 1791 (vtyp == VCHR || vtyp == VBLK)) { 1792 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1793 *tl++ = txdr_unsigned(NFSMAJOR(rdev)); 1794 *tl = txdr_unsigned(NFSMINOR(rdev)); 1795 } 1796 if (nd->nd_flag & ND_NFSV4) { 1797 NFSGETATTR_ATTRBIT(&attrbits); 1798 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1799 *tl++ = txdr_unsigned(NFSV4OP_GETFH); 1800 *tl = txdr_unsigned(NFSV4OP_GETATTR); 1801 (void) nfsrv_putattrbit(nd, &attrbits); 1802 } 1803 if (nd->nd_flag & ND_NFSV2) 1804 nfscl_fillsattr(nd, vap, dvp, NFSSATTR_SIZERDEV, rdev); 1805 error = nfscl_request(nd, dvp, p, cred, dstuff); 1806 if (error) 1807 return (error); 1808 if (nd->nd_flag & ND_NFSV4) 1809 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 1810 if (!nd->nd_repstat) { 1811 if (nd->nd_flag & ND_NFSV4) { 1812 NFSM_DISSECT(tl, u_int32_t *, 5 * NFSX_UNSIGNED); 1813 error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL); 1814 if (error) 1815 goto nfsmout; 1816 } 1817 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp); 1818 if (error) 1819 goto nfsmout; 1820 } 1821 if (nd->nd_flag & ND_NFSV3) 1822 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 1823 if (!error && nd->nd_repstat) 1824 error = nd->nd_repstat; 1825 nfsmout: 1826 mbuf_freem(nd->nd_mrep); 1827 return (error); 1828 } 1829 1830 /* 1831 * nfs file create call 1832 * Mostly just call the approriate routine. (I separated out v4, so that 1833 * error recovery wouldn't be as difficult.) 1834 */ 1835 APPLESTATIC int 1836 nfsrpc_create(vnode_t dvp, char *name, int namelen, struct vattr *vap, 1837 nfsquad_t cverf, int fmode, struct ucred *cred, NFSPROC_T *p, 1838 struct nfsvattr *dnap, struct nfsvattr *nnap, struct nfsfh **nfhpp, 1839 int *attrflagp, int *dattrflagp, void *dstuff) 1840 { 1841 int error = 0, newone, expireret = 0, retrycnt, unlocked; 1842 struct nfsclowner *owp; 1843 struct nfscldeleg *dp; 1844 struct nfsmount *nmp = VFSTONFS(vnode_mount(dvp)); 1845 u_int32_t clidrev; 1846 1847 if (NFSHASNFSV4(nmp)) { 1848 retrycnt = 0; 1849 do { 1850 dp = NULL; 1851 error = nfscl_open(dvp, NULL, 0, (NFSV4OPEN_ACCESSWRITE | 1852 NFSV4OPEN_ACCESSREAD), 0, cred, p, &owp, NULL, &newone, 1853 NULL, 1); 1854 if (error) 1855 return (error); 1856 if (nmp->nm_clp != NULL) 1857 clidrev = nmp->nm_clp->nfsc_clientidrev; 1858 else 1859 clidrev = 0; 1860 error = nfsrpc_createv4(dvp, name, namelen, vap, cverf, fmode, 1861 owp, &dp, cred, p, dnap, nnap, nfhpp, attrflagp, dattrflagp, 1862 dstuff, &unlocked); 1863 /* 1864 * There is no need to invalidate cached attributes here, 1865 * since new post-delegation issue attributes are always 1866 * returned by nfsrpc_createv4() and these will update the 1867 * attribute cache. 1868 */ 1869 if (dp != NULL) 1870 (void) nfscl_deleg(nmp->nm_mountp, owp->nfsow_clp, 1871 (*nfhpp)->nfh_fh, (*nfhpp)->nfh_len, cred, p, &dp); 1872 nfscl_ownerrelease(owp, error, newone, unlocked); 1873 if (error == NFSERR_GRACE || error == NFSERR_STALECLIENTID || 1874 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 1875 error == NFSERR_BADSESSION) { 1876 (void) nfs_catnap(PZERO, error, "nfs_open"); 1877 } else if ((error == NFSERR_EXPIRED || 1878 error == NFSERR_BADSTATEID) && clidrev != 0) { 1879 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p); 1880 retrycnt++; 1881 } 1882 } while (error == NFSERR_GRACE || error == NFSERR_STALECLIENTID || 1883 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 1884 error == NFSERR_BADSESSION || 1885 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) && 1886 expireret == 0 && clidrev != 0 && retrycnt < 4)); 1887 if (error && retrycnt >= 4) 1888 error = EIO; 1889 } else { 1890 error = nfsrpc_createv23(dvp, name, namelen, vap, cverf, 1891 fmode, cred, p, dnap, nnap, nfhpp, attrflagp, dattrflagp, 1892 dstuff); 1893 } 1894 return (error); 1895 } 1896 1897 /* 1898 * The create rpc for v2 and 3. 1899 */ 1900 static int 1901 nfsrpc_createv23(vnode_t dvp, char *name, int namelen, struct vattr *vap, 1902 nfsquad_t cverf, int fmode, struct ucred *cred, NFSPROC_T *p, 1903 struct nfsvattr *dnap, struct nfsvattr *nnap, struct nfsfh **nfhpp, 1904 int *attrflagp, int *dattrflagp, void *dstuff) 1905 { 1906 u_int32_t *tl; 1907 int error = 0; 1908 struct nfsrv_descript nfsd, *nd = &nfsd; 1909 1910 *nfhpp = NULL; 1911 *attrflagp = 0; 1912 *dattrflagp = 0; 1913 if (namelen > NFS_MAXNAMLEN) 1914 return (ENAMETOOLONG); 1915 NFSCL_REQSTART(nd, NFSPROC_CREATE, dvp); 1916 (void) nfsm_strtom(nd, name, namelen); 1917 if (nd->nd_flag & ND_NFSV3) { 1918 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1919 if (fmode & O_EXCL) { 1920 *tl = txdr_unsigned(NFSCREATE_EXCLUSIVE); 1921 NFSM_BUILD(tl, u_int32_t *, NFSX_VERF); 1922 *tl++ = cverf.lval[0]; 1923 *tl = cverf.lval[1]; 1924 } else { 1925 *tl = txdr_unsigned(NFSCREATE_UNCHECKED); 1926 nfscl_fillsattr(nd, vap, dvp, 0, 0); 1927 } 1928 } else { 1929 nfscl_fillsattr(nd, vap, dvp, NFSSATTR_SIZE0, 0); 1930 } 1931 error = nfscl_request(nd, dvp, p, cred, dstuff); 1932 if (error) 1933 return (error); 1934 if (nd->nd_repstat == 0) { 1935 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp); 1936 if (error) 1937 goto nfsmout; 1938 } 1939 if (nd->nd_flag & ND_NFSV3) 1940 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 1941 if (nd->nd_repstat != 0 && error == 0) 1942 error = nd->nd_repstat; 1943 nfsmout: 1944 mbuf_freem(nd->nd_mrep); 1945 return (error); 1946 } 1947 1948 static int 1949 nfsrpc_createv4(vnode_t dvp, char *name, int namelen, struct vattr *vap, 1950 nfsquad_t cverf, int fmode, struct nfsclowner *owp, struct nfscldeleg **dpp, 1951 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap, 1952 struct nfsvattr *nnap, struct nfsfh **nfhpp, int *attrflagp, 1953 int *dattrflagp, void *dstuff, int *unlockedp) 1954 { 1955 u_int32_t *tl; 1956 int error = 0, deleg, newone, ret, acesize, limitby; 1957 struct nfsrv_descript nfsd, *nd = &nfsd; 1958 struct nfsclopen *op; 1959 struct nfscldeleg *dp = NULL; 1960 struct nfsnode *np; 1961 struct nfsfh *nfhp; 1962 nfsattrbit_t attrbits; 1963 nfsv4stateid_t stateid; 1964 u_int32_t rflags; 1965 struct nfsmount *nmp; 1966 1967 nmp = VFSTONFS(dvp->v_mount); 1968 np = VTONFS(dvp); 1969 *unlockedp = 0; 1970 *nfhpp = NULL; 1971 *dpp = NULL; 1972 *attrflagp = 0; 1973 *dattrflagp = 0; 1974 if (namelen > NFS_MAXNAMLEN) 1975 return (ENAMETOOLONG); 1976 NFSCL_REQSTART(nd, NFSPROC_CREATE, dvp); 1977 /* 1978 * For V4, this is actually an Open op. 1979 */ 1980 NFSM_BUILD(tl, u_int32_t *, 5 * NFSX_UNSIGNED); 1981 *tl++ = txdr_unsigned(owp->nfsow_seqid); 1982 *tl++ = txdr_unsigned(NFSV4OPEN_ACCESSWRITE | 1983 NFSV4OPEN_ACCESSREAD); 1984 *tl++ = txdr_unsigned(NFSV4OPEN_DENYNONE); 1985 *tl++ = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[0]; 1986 *tl = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[1]; 1987 (void) nfsm_strtom(nd, owp->nfsow_owner, NFSV4CL_LOCKNAMELEN); 1988 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1989 *tl++ = txdr_unsigned(NFSV4OPEN_CREATE); 1990 if (fmode & O_EXCL) { 1991 if (NFSHASNFSV4N(nmp)) { 1992 if (NFSHASSESSPERSIST(nmp)) { 1993 /* Use GUARDED for persistent sessions. */ 1994 *tl = txdr_unsigned(NFSCREATE_GUARDED); 1995 nfscl_fillsattr(nd, vap, dvp, 0, 0); 1996 } else { 1997 /* Otherwise, use EXCLUSIVE4_1. */ 1998 *tl = txdr_unsigned(NFSCREATE_EXCLUSIVE41); 1999 NFSM_BUILD(tl, u_int32_t *, NFSX_VERF); 2000 *tl++ = cverf.lval[0]; 2001 *tl = cverf.lval[1]; 2002 nfscl_fillsattr(nd, vap, dvp, 0, 0); 2003 } 2004 } else { 2005 /* NFSv4.0 */ 2006 *tl = txdr_unsigned(NFSCREATE_EXCLUSIVE); 2007 NFSM_BUILD(tl, u_int32_t *, NFSX_VERF); 2008 *tl++ = cverf.lval[0]; 2009 *tl = cverf.lval[1]; 2010 } 2011 } else { 2012 *tl = txdr_unsigned(NFSCREATE_UNCHECKED); 2013 nfscl_fillsattr(nd, vap, dvp, 0, 0); 2014 } 2015 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2016 *tl = txdr_unsigned(NFSV4OPEN_CLAIMNULL); 2017 (void) nfsm_strtom(nd, name, namelen); 2018 /* Get the new file's handle and attributes. */ 2019 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2020 *tl++ = txdr_unsigned(NFSV4OP_GETFH); 2021 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2022 NFSGETATTR_ATTRBIT(&attrbits); 2023 (void) nfsrv_putattrbit(nd, &attrbits); 2024 /* Get the directory's post-op attributes. */ 2025 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2026 *tl = txdr_unsigned(NFSV4OP_PUTFH); 2027 (void) nfsm_fhtom(nd, np->n_fhp->nfh_fh, np->n_fhp->nfh_len, 0); 2028 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2029 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2030 (void) nfsrv_putattrbit(nd, &attrbits); 2031 error = nfscl_request(nd, dvp, p, cred, dstuff); 2032 if (error) 2033 return (error); 2034 NFSCL_INCRSEQID(owp->nfsow_seqid, nd); 2035 if (nd->nd_repstat == 0) { 2036 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID + 2037 6 * NFSX_UNSIGNED); 2038 stateid.seqid = *tl++; 2039 stateid.other[0] = *tl++; 2040 stateid.other[1] = *tl++; 2041 stateid.other[2] = *tl; 2042 rflags = fxdr_unsigned(u_int32_t, *(tl + 6)); 2043 (void) nfsrv_getattrbits(nd, &attrbits, NULL, NULL); 2044 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2045 deleg = fxdr_unsigned(int, *tl); 2046 if (deleg == NFSV4OPEN_DELEGATEREAD || 2047 deleg == NFSV4OPEN_DELEGATEWRITE) { 2048 if (!(owp->nfsow_clp->nfsc_flags & 2049 NFSCLFLAGS_FIRSTDELEG)) 2050 owp->nfsow_clp->nfsc_flags |= 2051 (NFSCLFLAGS_FIRSTDELEG | NFSCLFLAGS_GOTDELEG); 2052 MALLOC(dp, struct nfscldeleg *, 2053 sizeof (struct nfscldeleg) + NFSX_V4FHMAX, 2054 M_NFSCLDELEG, M_WAITOK); 2055 LIST_INIT(&dp->nfsdl_owner); 2056 LIST_INIT(&dp->nfsdl_lock); 2057 dp->nfsdl_clp = owp->nfsow_clp; 2058 newnfs_copyincred(cred, &dp->nfsdl_cred); 2059 nfscl_lockinit(&dp->nfsdl_rwlock); 2060 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID + 2061 NFSX_UNSIGNED); 2062 dp->nfsdl_stateid.seqid = *tl++; 2063 dp->nfsdl_stateid.other[0] = *tl++; 2064 dp->nfsdl_stateid.other[1] = *tl++; 2065 dp->nfsdl_stateid.other[2] = *tl++; 2066 ret = fxdr_unsigned(int, *tl); 2067 if (deleg == NFSV4OPEN_DELEGATEWRITE) { 2068 dp->nfsdl_flags = NFSCLDL_WRITE; 2069 /* 2070 * Indicates how much the file can grow. 2071 */ 2072 NFSM_DISSECT(tl, u_int32_t *, 2073 3 * NFSX_UNSIGNED); 2074 limitby = fxdr_unsigned(int, *tl++); 2075 switch (limitby) { 2076 case NFSV4OPEN_LIMITSIZE: 2077 dp->nfsdl_sizelimit = fxdr_hyper(tl); 2078 break; 2079 case NFSV4OPEN_LIMITBLOCKS: 2080 dp->nfsdl_sizelimit = 2081 fxdr_unsigned(u_int64_t, *tl++); 2082 dp->nfsdl_sizelimit *= 2083 fxdr_unsigned(u_int64_t, *tl); 2084 break; 2085 default: 2086 error = NFSERR_BADXDR; 2087 goto nfsmout; 2088 }; 2089 } else { 2090 dp->nfsdl_flags = NFSCLDL_READ; 2091 } 2092 if (ret) 2093 dp->nfsdl_flags |= NFSCLDL_RECALL; 2094 error = nfsrv_dissectace(nd, &dp->nfsdl_ace, &ret, 2095 &acesize, p); 2096 if (error) 2097 goto nfsmout; 2098 } else if (deleg != NFSV4OPEN_DELEGATENONE) { 2099 error = NFSERR_BADXDR; 2100 goto nfsmout; 2101 } 2102 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp); 2103 if (error) 2104 goto nfsmout; 2105 /* Get rid of the PutFH and Getattr status values. */ 2106 NFSM_DISSECT(tl, u_int32_t *, 4 * NFSX_UNSIGNED); 2107 /* Load the directory attributes. */ 2108 error = nfsm_loadattr(nd, dnap); 2109 if (error) 2110 goto nfsmout; 2111 *dattrflagp = 1; 2112 if (dp != NULL && *attrflagp) { 2113 dp->nfsdl_change = nnap->na_filerev; 2114 dp->nfsdl_modtime = nnap->na_mtime; 2115 dp->nfsdl_flags |= NFSCLDL_MODTIMESET; 2116 } 2117 /* 2118 * We can now complete the Open state. 2119 */ 2120 nfhp = *nfhpp; 2121 if (dp != NULL) { 2122 dp->nfsdl_fhlen = nfhp->nfh_len; 2123 NFSBCOPY(nfhp->nfh_fh, dp->nfsdl_fh, nfhp->nfh_len); 2124 } 2125 /* 2126 * Get an Open structure that will be 2127 * attached to the OpenOwner, acquired already. 2128 */ 2129 error = nfscl_open(dvp, nfhp->nfh_fh, nfhp->nfh_len, 2130 (NFSV4OPEN_ACCESSWRITE | NFSV4OPEN_ACCESSREAD), 0, 2131 cred, p, NULL, &op, &newone, NULL, 0); 2132 if (error) 2133 goto nfsmout; 2134 op->nfso_stateid = stateid; 2135 newnfs_copyincred(cred, &op->nfso_cred); 2136 if ((rflags & NFSV4OPEN_RESULTCONFIRM)) { 2137 do { 2138 ret = nfsrpc_openconfirm(dvp, nfhp->nfh_fh, 2139 nfhp->nfh_len, op, cred, p); 2140 if (ret == NFSERR_DELAY) 2141 (void) nfs_catnap(PZERO, ret, "nfs_create"); 2142 } while (ret == NFSERR_DELAY); 2143 error = ret; 2144 } 2145 2146 /* 2147 * If the server is handing out delegations, but we didn't 2148 * get one because an OpenConfirm was required, try the 2149 * Open again, to get a delegation. This is a harmless no-op, 2150 * from a server's point of view. 2151 */ 2152 if ((rflags & NFSV4OPEN_RESULTCONFIRM) && 2153 (owp->nfsow_clp->nfsc_flags & NFSCLFLAGS_GOTDELEG) && 2154 !error && dp == NULL) { 2155 do { 2156 ret = nfsrpc_openrpc(VFSTONFS(vnode_mount(dvp)), dvp, 2157 np->n_fhp->nfh_fh, np->n_fhp->nfh_len, 2158 nfhp->nfh_fh, nfhp->nfh_len, 2159 (NFSV4OPEN_ACCESSWRITE | NFSV4OPEN_ACCESSREAD), op, 2160 name, namelen, &dp, 0, 0x0, cred, p, 0, 1); 2161 if (ret == NFSERR_DELAY) 2162 (void) nfs_catnap(PZERO, ret, "nfs_crt2"); 2163 } while (ret == NFSERR_DELAY); 2164 if (ret) { 2165 if (dp != NULL) { 2166 FREE((caddr_t)dp, M_NFSCLDELEG); 2167 dp = NULL; 2168 } 2169 if (ret == NFSERR_STALECLIENTID || 2170 ret == NFSERR_STALEDONTRECOVER || 2171 ret == NFSERR_BADSESSION) 2172 error = ret; 2173 } 2174 } 2175 nfscl_openrelease(op, error, newone); 2176 *unlockedp = 1; 2177 } 2178 if (nd->nd_repstat != 0 && error == 0) 2179 error = nd->nd_repstat; 2180 if (error == NFSERR_STALECLIENTID || error == NFSERR_BADSESSION) 2181 nfscl_initiate_recovery(owp->nfsow_clp); 2182 nfsmout: 2183 if (!error) 2184 *dpp = dp; 2185 else if (dp != NULL) 2186 FREE((caddr_t)dp, M_NFSCLDELEG); 2187 mbuf_freem(nd->nd_mrep); 2188 return (error); 2189 } 2190 2191 /* 2192 * Nfs remove rpc 2193 */ 2194 APPLESTATIC int 2195 nfsrpc_remove(vnode_t dvp, char *name, int namelen, vnode_t vp, 2196 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap, int *dattrflagp, 2197 void *dstuff) 2198 { 2199 u_int32_t *tl; 2200 struct nfsrv_descript nfsd, *nd = &nfsd; 2201 struct nfsnode *np; 2202 struct nfsmount *nmp; 2203 nfsv4stateid_t dstateid; 2204 int error, ret = 0, i; 2205 2206 *dattrflagp = 0; 2207 if (namelen > NFS_MAXNAMLEN) 2208 return (ENAMETOOLONG); 2209 nmp = VFSTONFS(vnode_mount(dvp)); 2210 tryagain: 2211 if (NFSHASNFSV4(nmp) && ret == 0) { 2212 ret = nfscl_removedeleg(vp, p, &dstateid); 2213 if (ret == 1) { 2214 NFSCL_REQSTART(nd, NFSPROC_RETDELEGREMOVE, vp); 2215 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID + 2216 NFSX_UNSIGNED); 2217 if (NFSHASNFSV4N(nmp)) 2218 *tl++ = 0; 2219 else 2220 *tl++ = dstateid.seqid; 2221 *tl++ = dstateid.other[0]; 2222 *tl++ = dstateid.other[1]; 2223 *tl++ = dstateid.other[2]; 2224 *tl = txdr_unsigned(NFSV4OP_PUTFH); 2225 np = VTONFS(dvp); 2226 (void) nfsm_fhtom(nd, np->n_fhp->nfh_fh, 2227 np->n_fhp->nfh_len, 0); 2228 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2229 *tl = txdr_unsigned(NFSV4OP_REMOVE); 2230 } 2231 } else { 2232 ret = 0; 2233 } 2234 if (ret == 0) 2235 NFSCL_REQSTART(nd, NFSPROC_REMOVE, dvp); 2236 (void) nfsm_strtom(nd, name, namelen); 2237 error = nfscl_request(nd, dvp, p, cred, dstuff); 2238 if (error) 2239 return (error); 2240 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) { 2241 /* For NFSv4, parse out any Delereturn replies. */ 2242 if (ret > 0 && nd->nd_repstat != 0 && 2243 (nd->nd_flag & ND_NOMOREDATA)) { 2244 /* 2245 * If the Delegreturn failed, try again without 2246 * it. The server will Recall, as required. 2247 */ 2248 mbuf_freem(nd->nd_mrep); 2249 goto tryagain; 2250 } 2251 for (i = 0; i < (ret * 2); i++) { 2252 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == 2253 ND_NFSV4) { 2254 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2255 if (*(tl + 1)) 2256 nd->nd_flag |= ND_NOMOREDATA; 2257 } 2258 } 2259 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 2260 } 2261 if (nd->nd_repstat && !error) 2262 error = nd->nd_repstat; 2263 nfsmout: 2264 mbuf_freem(nd->nd_mrep); 2265 return (error); 2266 } 2267 2268 /* 2269 * Do an nfs rename rpc. 2270 */ 2271 APPLESTATIC int 2272 nfsrpc_rename(vnode_t fdvp, vnode_t fvp, char *fnameptr, int fnamelen, 2273 vnode_t tdvp, vnode_t tvp, char *tnameptr, int tnamelen, struct ucred *cred, 2274 NFSPROC_T *p, struct nfsvattr *fnap, struct nfsvattr *tnap, 2275 int *fattrflagp, int *tattrflagp, void *fstuff, void *tstuff) 2276 { 2277 u_int32_t *tl; 2278 struct nfsrv_descript nfsd, *nd = &nfsd; 2279 struct nfsmount *nmp; 2280 struct nfsnode *np; 2281 nfsattrbit_t attrbits; 2282 nfsv4stateid_t fdstateid, tdstateid; 2283 int error = 0, ret = 0, gottd = 0, gotfd = 0, i; 2284 2285 *fattrflagp = 0; 2286 *tattrflagp = 0; 2287 nmp = VFSTONFS(vnode_mount(fdvp)); 2288 if (fnamelen > NFS_MAXNAMLEN || tnamelen > NFS_MAXNAMLEN) 2289 return (ENAMETOOLONG); 2290 tryagain: 2291 if (NFSHASNFSV4(nmp) && ret == 0) { 2292 ret = nfscl_renamedeleg(fvp, &fdstateid, &gotfd, tvp, 2293 &tdstateid, &gottd, p); 2294 if (gotfd && gottd) { 2295 NFSCL_REQSTART(nd, NFSPROC_RETDELEGRENAME2, fvp); 2296 } else if (gotfd) { 2297 NFSCL_REQSTART(nd, NFSPROC_RETDELEGRENAME1, fvp); 2298 } else if (gottd) { 2299 NFSCL_REQSTART(nd, NFSPROC_RETDELEGRENAME1, tvp); 2300 } 2301 if (gotfd) { 2302 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID); 2303 if (NFSHASNFSV4N(nmp)) 2304 *tl++ = 0; 2305 else 2306 *tl++ = fdstateid.seqid; 2307 *tl++ = fdstateid.other[0]; 2308 *tl++ = fdstateid.other[1]; 2309 *tl = fdstateid.other[2]; 2310 if (gottd) { 2311 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2312 *tl = txdr_unsigned(NFSV4OP_PUTFH); 2313 np = VTONFS(tvp); 2314 (void) nfsm_fhtom(nd, np->n_fhp->nfh_fh, 2315 np->n_fhp->nfh_len, 0); 2316 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2317 *tl = txdr_unsigned(NFSV4OP_DELEGRETURN); 2318 } 2319 } 2320 if (gottd) { 2321 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID); 2322 if (NFSHASNFSV4N(nmp)) 2323 *tl++ = 0; 2324 else 2325 *tl++ = tdstateid.seqid; 2326 *tl++ = tdstateid.other[0]; 2327 *tl++ = tdstateid.other[1]; 2328 *tl = tdstateid.other[2]; 2329 } 2330 if (ret > 0) { 2331 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2332 *tl = txdr_unsigned(NFSV4OP_PUTFH); 2333 np = VTONFS(fdvp); 2334 (void) nfsm_fhtom(nd, np->n_fhp->nfh_fh, 2335 np->n_fhp->nfh_len, 0); 2336 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2337 *tl = txdr_unsigned(NFSV4OP_SAVEFH); 2338 } 2339 } else { 2340 ret = 0; 2341 } 2342 if (ret == 0) 2343 NFSCL_REQSTART(nd, NFSPROC_RENAME, fdvp); 2344 if (nd->nd_flag & ND_NFSV4) { 2345 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2346 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2347 NFSWCCATTR_ATTRBIT(&attrbits); 2348 (void) nfsrv_putattrbit(nd, &attrbits); 2349 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2350 *tl = txdr_unsigned(NFSV4OP_PUTFH); 2351 (void) nfsm_fhtom(nd, VTONFS(tdvp)->n_fhp->nfh_fh, 2352 VTONFS(tdvp)->n_fhp->nfh_len, 0); 2353 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2354 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2355 (void) nfsrv_putattrbit(nd, &attrbits); 2356 nd->nd_flag |= ND_V4WCCATTR; 2357 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2358 *tl = txdr_unsigned(NFSV4OP_RENAME); 2359 } 2360 (void) nfsm_strtom(nd, fnameptr, fnamelen); 2361 if (!(nd->nd_flag & ND_NFSV4)) 2362 (void) nfsm_fhtom(nd, VTONFS(tdvp)->n_fhp->nfh_fh, 2363 VTONFS(tdvp)->n_fhp->nfh_len, 0); 2364 (void) nfsm_strtom(nd, tnameptr, tnamelen); 2365 error = nfscl_request(nd, fdvp, p, cred, fstuff); 2366 if (error) 2367 return (error); 2368 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) { 2369 /* For NFSv4, parse out any Delereturn replies. */ 2370 if (ret > 0 && nd->nd_repstat != 0 && 2371 (nd->nd_flag & ND_NOMOREDATA)) { 2372 /* 2373 * If the Delegreturn failed, try again without 2374 * it. The server will Recall, as required. 2375 */ 2376 mbuf_freem(nd->nd_mrep); 2377 goto tryagain; 2378 } 2379 for (i = 0; i < (ret * 2); i++) { 2380 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == 2381 ND_NFSV4) { 2382 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2383 if (*(tl + 1)) { 2384 if (i == 0 && ret > 1) { 2385 /* 2386 * If the Delegreturn failed, try again 2387 * without it. The server will Recall, as 2388 * required. 2389 * If ret > 1, the first iteration of this 2390 * loop is the second DelegReturn result. 2391 */ 2392 mbuf_freem(nd->nd_mrep); 2393 goto tryagain; 2394 } else { 2395 nd->nd_flag |= ND_NOMOREDATA; 2396 } 2397 } 2398 } 2399 } 2400 /* Now, the first wcc attribute reply. */ 2401 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == ND_NFSV4) { 2402 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2403 if (*(tl + 1)) 2404 nd->nd_flag |= ND_NOMOREDATA; 2405 } 2406 error = nfscl_wcc_data(nd, fdvp, fnap, fattrflagp, NULL, 2407 fstuff); 2408 /* and the second wcc attribute reply. */ 2409 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == ND_NFSV4 && 2410 !error) { 2411 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2412 if (*(tl + 1)) 2413 nd->nd_flag |= ND_NOMOREDATA; 2414 } 2415 if (!error) 2416 error = nfscl_wcc_data(nd, tdvp, tnap, tattrflagp, 2417 NULL, tstuff); 2418 } 2419 if (nd->nd_repstat && !error) 2420 error = nd->nd_repstat; 2421 nfsmout: 2422 mbuf_freem(nd->nd_mrep); 2423 return (error); 2424 } 2425 2426 /* 2427 * nfs hard link create rpc 2428 */ 2429 APPLESTATIC int 2430 nfsrpc_link(vnode_t dvp, vnode_t vp, char *name, int namelen, 2431 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap, 2432 struct nfsvattr *nap, int *attrflagp, int *dattrflagp, void *dstuff) 2433 { 2434 u_int32_t *tl; 2435 struct nfsrv_descript nfsd, *nd = &nfsd; 2436 nfsattrbit_t attrbits; 2437 int error = 0; 2438 2439 *attrflagp = 0; 2440 *dattrflagp = 0; 2441 if (namelen > NFS_MAXNAMLEN) 2442 return (ENAMETOOLONG); 2443 NFSCL_REQSTART(nd, NFSPROC_LINK, vp); 2444 if (nd->nd_flag & ND_NFSV4) { 2445 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2446 *tl = txdr_unsigned(NFSV4OP_PUTFH); 2447 } 2448 (void) nfsm_fhtom(nd, VTONFS(dvp)->n_fhp->nfh_fh, 2449 VTONFS(dvp)->n_fhp->nfh_len, 0); 2450 if (nd->nd_flag & ND_NFSV4) { 2451 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2452 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2453 NFSWCCATTR_ATTRBIT(&attrbits); 2454 (void) nfsrv_putattrbit(nd, &attrbits); 2455 nd->nd_flag |= ND_V4WCCATTR; 2456 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2457 *tl = txdr_unsigned(NFSV4OP_LINK); 2458 } 2459 (void) nfsm_strtom(nd, name, namelen); 2460 error = nfscl_request(nd, vp, p, cred, dstuff); 2461 if (error) 2462 return (error); 2463 if (nd->nd_flag & ND_NFSV3) { 2464 error = nfscl_postop_attr(nd, nap, attrflagp, dstuff); 2465 if (!error) 2466 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, 2467 NULL, dstuff); 2468 } else if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == ND_NFSV4) { 2469 /* 2470 * First, parse out the PutFH and Getattr result. 2471 */ 2472 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2473 if (!(*(tl + 1))) 2474 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2475 if (*(tl + 1)) 2476 nd->nd_flag |= ND_NOMOREDATA; 2477 /* 2478 * Get the pre-op attributes. 2479 */ 2480 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 2481 } 2482 if (nd->nd_repstat && !error) 2483 error = nd->nd_repstat; 2484 nfsmout: 2485 mbuf_freem(nd->nd_mrep); 2486 return (error); 2487 } 2488 2489 /* 2490 * nfs symbolic link create rpc 2491 */ 2492 APPLESTATIC int 2493 nfsrpc_symlink(vnode_t dvp, char *name, int namelen, char *target, 2494 struct vattr *vap, struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap, 2495 struct nfsvattr *nnap, struct nfsfh **nfhpp, int *attrflagp, 2496 int *dattrflagp, void *dstuff) 2497 { 2498 u_int32_t *tl; 2499 struct nfsrv_descript nfsd, *nd = &nfsd; 2500 struct nfsmount *nmp; 2501 int slen, error = 0; 2502 2503 *nfhpp = NULL; 2504 *attrflagp = 0; 2505 *dattrflagp = 0; 2506 nmp = VFSTONFS(vnode_mount(dvp)); 2507 slen = strlen(target); 2508 if (slen > NFS_MAXPATHLEN || namelen > NFS_MAXNAMLEN) 2509 return (ENAMETOOLONG); 2510 NFSCL_REQSTART(nd, NFSPROC_SYMLINK, dvp); 2511 if (nd->nd_flag & ND_NFSV4) { 2512 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2513 *tl = txdr_unsigned(NFLNK); 2514 (void) nfsm_strtom(nd, target, slen); 2515 } 2516 (void) nfsm_strtom(nd, name, namelen); 2517 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) 2518 nfscl_fillsattr(nd, vap, dvp, 0, 0); 2519 if (!(nd->nd_flag & ND_NFSV4)) 2520 (void) nfsm_strtom(nd, target, slen); 2521 if (nd->nd_flag & ND_NFSV2) 2522 nfscl_fillsattr(nd, vap, dvp, NFSSATTR_SIZENEG1, 0); 2523 error = nfscl_request(nd, dvp, p, cred, dstuff); 2524 if (error) 2525 return (error); 2526 if (nd->nd_flag & ND_NFSV4) 2527 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 2528 if ((nd->nd_flag & ND_NFSV3) && !error) { 2529 if (!nd->nd_repstat) 2530 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp); 2531 if (!error) 2532 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, 2533 NULL, dstuff); 2534 } 2535 if (nd->nd_repstat && !error) 2536 error = nd->nd_repstat; 2537 mbuf_freem(nd->nd_mrep); 2538 /* 2539 * Kludge: Map EEXIST => 0 assuming that it is a reply to a retry. 2540 * Only do this if vfs.nfs.ignore_eexist is set. 2541 * Never do this for NFSv4.1 or later minor versions, since sessions 2542 * should guarantee "exactly once" RPC semantics. 2543 */ 2544 if (error == EEXIST && nfsignore_eexist != 0 && (!NFSHASNFSV4(nmp) || 2545 nmp->nm_minorvers == 0)) 2546 error = 0; 2547 return (error); 2548 } 2549 2550 /* 2551 * nfs make dir rpc 2552 */ 2553 APPLESTATIC int 2554 nfsrpc_mkdir(vnode_t dvp, char *name, int namelen, struct vattr *vap, 2555 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap, 2556 struct nfsvattr *nnap, struct nfsfh **nfhpp, int *attrflagp, 2557 int *dattrflagp, void *dstuff) 2558 { 2559 u_int32_t *tl; 2560 struct nfsrv_descript nfsd, *nd = &nfsd; 2561 nfsattrbit_t attrbits; 2562 int error = 0; 2563 struct nfsfh *fhp; 2564 struct nfsmount *nmp; 2565 2566 *nfhpp = NULL; 2567 *attrflagp = 0; 2568 *dattrflagp = 0; 2569 nmp = VFSTONFS(vnode_mount(dvp)); 2570 fhp = VTONFS(dvp)->n_fhp; 2571 if (namelen > NFS_MAXNAMLEN) 2572 return (ENAMETOOLONG); 2573 NFSCL_REQSTART(nd, NFSPROC_MKDIR, dvp); 2574 if (nd->nd_flag & ND_NFSV4) { 2575 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2576 *tl = txdr_unsigned(NFDIR); 2577 } 2578 (void) nfsm_strtom(nd, name, namelen); 2579 nfscl_fillsattr(nd, vap, dvp, NFSSATTR_SIZENEG1, 0); 2580 if (nd->nd_flag & ND_NFSV4) { 2581 NFSGETATTR_ATTRBIT(&attrbits); 2582 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2583 *tl++ = txdr_unsigned(NFSV4OP_GETFH); 2584 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2585 (void) nfsrv_putattrbit(nd, &attrbits); 2586 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2587 *tl = txdr_unsigned(NFSV4OP_PUTFH); 2588 (void) nfsm_fhtom(nd, fhp->nfh_fh, fhp->nfh_len, 0); 2589 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2590 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2591 (void) nfsrv_putattrbit(nd, &attrbits); 2592 } 2593 error = nfscl_request(nd, dvp, p, cred, dstuff); 2594 if (error) 2595 return (error); 2596 if (nd->nd_flag & ND_NFSV4) 2597 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 2598 if (!nd->nd_repstat && !error) { 2599 if (nd->nd_flag & ND_NFSV4) { 2600 NFSM_DISSECT(tl, u_int32_t *, 5 * NFSX_UNSIGNED); 2601 error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL); 2602 } 2603 if (!error) 2604 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp); 2605 if (error == 0 && (nd->nd_flag & ND_NFSV4) != 0) { 2606 /* Get rid of the PutFH and Getattr status values. */ 2607 NFSM_DISSECT(tl, u_int32_t *, 4 * NFSX_UNSIGNED); 2608 /* Load the directory attributes. */ 2609 error = nfsm_loadattr(nd, dnap); 2610 if (error == 0) 2611 *dattrflagp = 1; 2612 } 2613 } 2614 if ((nd->nd_flag & ND_NFSV3) && !error) 2615 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 2616 if (nd->nd_repstat && !error) 2617 error = nd->nd_repstat; 2618 nfsmout: 2619 mbuf_freem(nd->nd_mrep); 2620 /* 2621 * Kludge: Map EEXIST => 0 assuming that it is a reply to a retry. 2622 * Only do this if vfs.nfs.ignore_eexist is set. 2623 * Never do this for NFSv4.1 or later minor versions, since sessions 2624 * should guarantee "exactly once" RPC semantics. 2625 */ 2626 if (error == EEXIST && nfsignore_eexist != 0 && (!NFSHASNFSV4(nmp) || 2627 nmp->nm_minorvers == 0)) 2628 error = 0; 2629 return (error); 2630 } 2631 2632 /* 2633 * nfs remove directory call 2634 */ 2635 APPLESTATIC int 2636 nfsrpc_rmdir(vnode_t dvp, char *name, int namelen, struct ucred *cred, 2637 NFSPROC_T *p, struct nfsvattr *dnap, int *dattrflagp, void *dstuff) 2638 { 2639 struct nfsrv_descript nfsd, *nd = &nfsd; 2640 int error = 0; 2641 2642 *dattrflagp = 0; 2643 if (namelen > NFS_MAXNAMLEN) 2644 return (ENAMETOOLONG); 2645 NFSCL_REQSTART(nd, NFSPROC_RMDIR, dvp); 2646 (void) nfsm_strtom(nd, name, namelen); 2647 error = nfscl_request(nd, dvp, p, cred, dstuff); 2648 if (error) 2649 return (error); 2650 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) 2651 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 2652 if (nd->nd_repstat && !error) 2653 error = nd->nd_repstat; 2654 mbuf_freem(nd->nd_mrep); 2655 /* 2656 * Kludge: Map ENOENT => 0 assuming that you have a reply to a retry. 2657 */ 2658 if (error == ENOENT) 2659 error = 0; 2660 return (error); 2661 } 2662 2663 /* 2664 * Readdir rpc. 2665 * Always returns with either uio_resid unchanged, if you are at the 2666 * end of the directory, or uio_resid == 0, with all DIRBLKSIZ chunks 2667 * filled in. 2668 * I felt this would allow caching of directory blocks more easily 2669 * than returning a pertially filled block. 2670 * Directory offset cookies: 2671 * Oh my, what to do with them... 2672 * I can think of three ways to deal with them: 2673 * 1 - have the layer above these RPCs maintain a map between logical 2674 * directory byte offsets and the NFS directory offset cookies 2675 * 2 - pass the opaque directory offset cookies up into userland 2676 * and let the libc functions deal with them, via the system call 2677 * 3 - return them to userland in the "struct dirent", so future versions 2678 * of libc can use them and do whatever is necessary to amke things work 2679 * above these rpc calls, in the meantime 2680 * For now, I do #3 by "hiding" the directory offset cookies after the 2681 * d_name field in struct dirent. This is space inside d_reclen that 2682 * will be ignored by anything that doesn't know about them. 2683 * The directory offset cookies are filled in as the last 8 bytes of 2684 * each directory entry, after d_name. Someday, the userland libc 2685 * functions may be able to use these. In the meantime, it satisfies 2686 * OpenBSD's requirements for cookies being returned. 2687 * If expects the directory offset cookie for the read to be in uio_offset 2688 * and returns the one for the next entry after this directory block in 2689 * there, as well. 2690 */ 2691 APPLESTATIC int 2692 nfsrpc_readdir(vnode_t vp, struct uio *uiop, nfsuint64 *cookiep, 2693 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, 2694 int *eofp, void *stuff) 2695 { 2696 int len, left; 2697 struct dirent *dp = NULL; 2698 u_int32_t *tl; 2699 nfsquad_t cookie, ncookie; 2700 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 2701 struct nfsnode *dnp = VTONFS(vp); 2702 struct nfsvattr nfsva; 2703 struct nfsrv_descript nfsd, *nd = &nfsd; 2704 int error = 0, tlen, more_dirs = 1, blksiz = 0, bigenough = 1; 2705 int reqsize, tryformoredirs = 1, readsize, eof = 0, gotmnton = 0; 2706 long dotfileid, dotdotfileid = 0; 2707 u_int32_t fakefileno = 0xffffffff, rderr; 2708 char *cp; 2709 nfsattrbit_t attrbits, dattrbits; 2710 u_int32_t *tl2 = NULL; 2711 size_t tresid; 2712 2713 KASSERT(uiop->uio_iovcnt == 1 && 2714 (uio_uio_resid(uiop) & (DIRBLKSIZ - 1)) == 0, 2715 ("nfs readdirrpc bad uio")); 2716 2717 /* 2718 * There is no point in reading a lot more than uio_resid, however 2719 * adding one additional DIRBLKSIZ makes sense. Since uio_resid 2720 * and nm_readdirsize are both exact multiples of DIRBLKSIZ, this 2721 * will never make readsize > nm_readdirsize. 2722 */ 2723 readsize = nmp->nm_readdirsize; 2724 if (readsize > uio_uio_resid(uiop)) 2725 readsize = uio_uio_resid(uiop) + DIRBLKSIZ; 2726 2727 *attrflagp = 0; 2728 if (eofp) 2729 *eofp = 0; 2730 tresid = uio_uio_resid(uiop); 2731 cookie.lval[0] = cookiep->nfsuquad[0]; 2732 cookie.lval[1] = cookiep->nfsuquad[1]; 2733 nd->nd_mrep = NULL; 2734 2735 /* 2736 * For NFSv4, first create the "." and ".." entries. 2737 */ 2738 if (NFSHASNFSV4(nmp)) { 2739 reqsize = 6 * NFSX_UNSIGNED; 2740 NFSGETATTR_ATTRBIT(&dattrbits); 2741 NFSZERO_ATTRBIT(&attrbits); 2742 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_FILEID); 2743 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_TYPE); 2744 if (NFSISSET_ATTRBIT(&dnp->n_vattr.na_suppattr, 2745 NFSATTRBIT_MOUNTEDONFILEID)) { 2746 NFSSETBIT_ATTRBIT(&attrbits, 2747 NFSATTRBIT_MOUNTEDONFILEID); 2748 gotmnton = 1; 2749 } else { 2750 /* 2751 * Must fake it. Use the fileno, except when the 2752 * fsid is != to that of the directory. For that 2753 * case, generate a fake fileno that is not the same. 2754 */ 2755 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_FSID); 2756 gotmnton = 0; 2757 } 2758 2759 /* 2760 * Joy, oh joy. For V4 we get to hand craft '.' and '..'. 2761 */ 2762 if (uiop->uio_offset == 0) { 2763 NFSCL_REQSTART(nd, NFSPROC_LOOKUPP, vp); 2764 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2765 *tl++ = txdr_unsigned(NFSV4OP_GETFH); 2766 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2767 (void) nfsrv_putattrbit(nd, &attrbits); 2768 error = nfscl_request(nd, vp, p, cred, stuff); 2769 if (error) 2770 return (error); 2771 dotfileid = 0; /* Fake out the compiler. */ 2772 if ((nd->nd_flag & ND_NOMOREDATA) == 0) { 2773 error = nfsm_loadattr(nd, &nfsva); 2774 if (error != 0) 2775 goto nfsmout; 2776 dotfileid = nfsva.na_fileid; 2777 } 2778 if (nd->nd_repstat == 0) { 2779 NFSM_DISSECT(tl, u_int32_t *, 5 * NFSX_UNSIGNED); 2780 len = fxdr_unsigned(int, *(tl + 4)); 2781 if (len > 0 && len <= NFSX_V4FHMAX) 2782 error = nfsm_advance(nd, NFSM_RNDUP(len), -1); 2783 else 2784 error = EPERM; 2785 if (!error) { 2786 NFSM_DISSECT(tl, u_int32_t *, 2*NFSX_UNSIGNED); 2787 nfsva.na_mntonfileno = 0xffffffff; 2788 error = nfsv4_loadattr(nd, NULL, &nfsva, NULL, 2789 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0, 2790 NULL, NULL, NULL, p, cred); 2791 if (error) { 2792 dotdotfileid = dotfileid; 2793 } else if (gotmnton) { 2794 if (nfsva.na_mntonfileno != 0xffffffff) 2795 dotdotfileid = nfsva.na_mntonfileno; 2796 else 2797 dotdotfileid = nfsva.na_fileid; 2798 } else if (nfsva.na_filesid[0] == 2799 dnp->n_vattr.na_filesid[0] && 2800 nfsva.na_filesid[1] == 2801 dnp->n_vattr.na_filesid[1]) { 2802 dotdotfileid = nfsva.na_fileid; 2803 } else { 2804 do { 2805 fakefileno--; 2806 } while (fakefileno == 2807 nfsva.na_fileid); 2808 dotdotfileid = fakefileno; 2809 } 2810 } 2811 } else if (nd->nd_repstat == NFSERR_NOENT) { 2812 /* 2813 * Lookupp returns NFSERR_NOENT when we are 2814 * at the root, so just use the current dir. 2815 */ 2816 nd->nd_repstat = 0; 2817 dotdotfileid = dotfileid; 2818 } else { 2819 error = nd->nd_repstat; 2820 } 2821 mbuf_freem(nd->nd_mrep); 2822 if (error) 2823 return (error); 2824 nd->nd_mrep = NULL; 2825 dp = (struct dirent *) CAST_DOWN(caddr_t, uio_iov_base(uiop)); 2826 dp->d_type = DT_DIR; 2827 dp->d_fileno = dotfileid; 2828 dp->d_namlen = 1; 2829 dp->d_name[0] = '.'; 2830 dp->d_name[1] = '\0'; 2831 dp->d_reclen = DIRENT_SIZE(dp) + NFSX_HYPER; 2832 /* 2833 * Just make these offset cookie 0. 2834 */ 2835 tl = (u_int32_t *)&dp->d_name[4]; 2836 *tl++ = 0; 2837 *tl = 0; 2838 blksiz += dp->d_reclen; 2839 uio_uio_resid_add(uiop, -(dp->d_reclen)); 2840 uiop->uio_offset += dp->d_reclen; 2841 uio_iov_base_add(uiop, dp->d_reclen); 2842 uio_iov_len_add(uiop, -(dp->d_reclen)); 2843 dp = (struct dirent *) CAST_DOWN(caddr_t, uio_iov_base(uiop)); 2844 dp->d_type = DT_DIR; 2845 dp->d_fileno = dotdotfileid; 2846 dp->d_namlen = 2; 2847 dp->d_name[0] = '.'; 2848 dp->d_name[1] = '.'; 2849 dp->d_name[2] = '\0'; 2850 dp->d_reclen = DIRENT_SIZE(dp) + NFSX_HYPER; 2851 /* 2852 * Just make these offset cookie 0. 2853 */ 2854 tl = (u_int32_t *)&dp->d_name[4]; 2855 *tl++ = 0; 2856 *tl = 0; 2857 blksiz += dp->d_reclen; 2858 uio_uio_resid_add(uiop, -(dp->d_reclen)); 2859 uiop->uio_offset += dp->d_reclen; 2860 uio_iov_base_add(uiop, dp->d_reclen); 2861 uio_iov_len_add(uiop, -(dp->d_reclen)); 2862 } 2863 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_RDATTRERROR); 2864 } else { 2865 reqsize = 5 * NFSX_UNSIGNED; 2866 } 2867 2868 2869 /* 2870 * Loop around doing readdir rpc's of size readsize. 2871 * The stopping criteria is EOF or buffer full. 2872 */ 2873 while (more_dirs && bigenough) { 2874 *attrflagp = 0; 2875 NFSCL_REQSTART(nd, NFSPROC_READDIR, vp); 2876 if (nd->nd_flag & ND_NFSV2) { 2877 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2878 *tl++ = cookie.lval[1]; 2879 *tl = txdr_unsigned(readsize); 2880 } else { 2881 NFSM_BUILD(tl, u_int32_t *, reqsize); 2882 *tl++ = cookie.lval[0]; 2883 *tl++ = cookie.lval[1]; 2884 if (cookie.qval == 0) { 2885 *tl++ = 0; 2886 *tl++ = 0; 2887 } else { 2888 NFSLOCKNODE(dnp); 2889 *tl++ = dnp->n_cookieverf.nfsuquad[0]; 2890 *tl++ = dnp->n_cookieverf.nfsuquad[1]; 2891 NFSUNLOCKNODE(dnp); 2892 } 2893 if (nd->nd_flag & ND_NFSV4) { 2894 *tl++ = txdr_unsigned(readsize); 2895 *tl = txdr_unsigned(readsize); 2896 (void) nfsrv_putattrbit(nd, &attrbits); 2897 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2898 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2899 (void) nfsrv_putattrbit(nd, &dattrbits); 2900 } else { 2901 *tl = txdr_unsigned(readsize); 2902 } 2903 } 2904 error = nfscl_request(nd, vp, p, cred, stuff); 2905 if (error) 2906 return (error); 2907 if (!(nd->nd_flag & ND_NFSV2)) { 2908 if (nd->nd_flag & ND_NFSV3) 2909 error = nfscl_postop_attr(nd, nap, attrflagp, 2910 stuff); 2911 if (!nd->nd_repstat && !error) { 2912 NFSM_DISSECT(tl, u_int32_t *, NFSX_HYPER); 2913 NFSLOCKNODE(dnp); 2914 dnp->n_cookieverf.nfsuquad[0] = *tl++; 2915 dnp->n_cookieverf.nfsuquad[1] = *tl; 2916 NFSUNLOCKNODE(dnp); 2917 } 2918 } 2919 if (nd->nd_repstat || error) { 2920 if (!error) 2921 error = nd->nd_repstat; 2922 goto nfsmout; 2923 } 2924 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2925 more_dirs = fxdr_unsigned(int, *tl); 2926 if (!more_dirs) 2927 tryformoredirs = 0; 2928 2929 /* loop thru the dir entries, doctoring them to 4bsd form */ 2930 while (more_dirs && bigenough) { 2931 if (nd->nd_flag & ND_NFSV4) { 2932 NFSM_DISSECT(tl, u_int32_t *, 3*NFSX_UNSIGNED); 2933 ncookie.lval[0] = *tl++; 2934 ncookie.lval[1] = *tl++; 2935 len = fxdr_unsigned(int, *tl); 2936 } else if (nd->nd_flag & ND_NFSV3) { 2937 NFSM_DISSECT(tl, u_int32_t *, 3*NFSX_UNSIGNED); 2938 nfsva.na_fileid = fxdr_hyper(tl); 2939 tl += 2; 2940 len = fxdr_unsigned(int, *tl); 2941 } else { 2942 NFSM_DISSECT(tl, u_int32_t *, 2*NFSX_UNSIGNED); 2943 nfsva.na_fileid = 2944 fxdr_unsigned(long, *tl++); 2945 len = fxdr_unsigned(int, *tl); 2946 } 2947 if (len <= 0 || len > NFS_MAXNAMLEN) { 2948 error = EBADRPC; 2949 goto nfsmout; 2950 } 2951 tlen = NFSM_RNDUP(len); 2952 if (tlen == len) 2953 tlen += 4; /* To ensure null termination */ 2954 left = DIRBLKSIZ - blksiz; 2955 if ((int)(tlen + DIRHDSIZ + NFSX_HYPER) > left) { 2956 dp->d_reclen += left; 2957 uio_iov_base_add(uiop, left); 2958 uio_iov_len_add(uiop, -(left)); 2959 uio_uio_resid_add(uiop, -(left)); 2960 uiop->uio_offset += left; 2961 blksiz = 0; 2962 } 2963 if ((int)(tlen + DIRHDSIZ + NFSX_HYPER) > uio_uio_resid(uiop)) 2964 bigenough = 0; 2965 if (bigenough) { 2966 dp = (struct dirent *) CAST_DOWN(caddr_t, uio_iov_base(uiop)); 2967 dp->d_namlen = len; 2968 dp->d_reclen = tlen + DIRHDSIZ + NFSX_HYPER; 2969 dp->d_type = DT_UNKNOWN; 2970 blksiz += dp->d_reclen; 2971 if (blksiz == DIRBLKSIZ) 2972 blksiz = 0; 2973 uio_uio_resid_add(uiop, -(DIRHDSIZ)); 2974 uiop->uio_offset += DIRHDSIZ; 2975 uio_iov_base_add(uiop, DIRHDSIZ); 2976 uio_iov_len_add(uiop, -(DIRHDSIZ)); 2977 error = nfsm_mbufuio(nd, uiop, len); 2978 if (error) 2979 goto nfsmout; 2980 cp = CAST_DOWN(caddr_t, uio_iov_base(uiop)); 2981 tlen -= len; 2982 *cp = '\0'; /* null terminate */ 2983 cp += tlen; /* points to cookie storage */ 2984 tl2 = (u_int32_t *)cp; 2985 uio_iov_base_add(uiop, (tlen + NFSX_HYPER)); 2986 uio_iov_len_add(uiop, -(tlen + NFSX_HYPER)); 2987 uio_uio_resid_add(uiop, -(tlen + NFSX_HYPER)); 2988 uiop->uio_offset += (tlen + NFSX_HYPER); 2989 } else { 2990 error = nfsm_advance(nd, NFSM_RNDUP(len), -1); 2991 if (error) 2992 goto nfsmout; 2993 } 2994 if (nd->nd_flag & ND_NFSV4) { 2995 rderr = 0; 2996 nfsva.na_mntonfileno = 0xffffffff; 2997 error = nfsv4_loadattr(nd, NULL, &nfsva, NULL, 2998 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0, 2999 NULL, NULL, &rderr, p, cred); 3000 if (error) 3001 goto nfsmout; 3002 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 3003 } else if (nd->nd_flag & ND_NFSV3) { 3004 NFSM_DISSECT(tl, u_int32_t *, 3*NFSX_UNSIGNED); 3005 ncookie.lval[0] = *tl++; 3006 ncookie.lval[1] = *tl++; 3007 } else { 3008 NFSM_DISSECT(tl, u_int32_t *, 2*NFSX_UNSIGNED); 3009 ncookie.lval[0] = 0; 3010 ncookie.lval[1] = *tl++; 3011 } 3012 if (bigenough) { 3013 if (nd->nd_flag & ND_NFSV4) { 3014 if (rderr) { 3015 dp->d_fileno = 0; 3016 } else { 3017 if (gotmnton) { 3018 if (nfsva.na_mntonfileno != 0xffffffff) 3019 dp->d_fileno = nfsva.na_mntonfileno; 3020 else 3021 dp->d_fileno = nfsva.na_fileid; 3022 } else if (nfsva.na_filesid[0] == 3023 dnp->n_vattr.na_filesid[0] && 3024 nfsva.na_filesid[1] == 3025 dnp->n_vattr.na_filesid[1]) { 3026 dp->d_fileno = nfsva.na_fileid; 3027 } else { 3028 do { 3029 fakefileno--; 3030 } while (fakefileno == 3031 nfsva.na_fileid); 3032 dp->d_fileno = fakefileno; 3033 } 3034 dp->d_type = vtonfs_dtype(nfsva.na_type); 3035 } 3036 } else { 3037 dp->d_fileno = nfsva.na_fileid; 3038 } 3039 *tl2++ = cookiep->nfsuquad[0] = cookie.lval[0] = 3040 ncookie.lval[0]; 3041 *tl2 = cookiep->nfsuquad[1] = cookie.lval[1] = 3042 ncookie.lval[1]; 3043 } 3044 more_dirs = fxdr_unsigned(int, *tl); 3045 } 3046 /* 3047 * If at end of rpc data, get the eof boolean 3048 */ 3049 if (!more_dirs) { 3050 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 3051 eof = fxdr_unsigned(int, *tl); 3052 if (tryformoredirs) 3053 more_dirs = !eof; 3054 if (nd->nd_flag & ND_NFSV4) { 3055 error = nfscl_postop_attr(nd, nap, attrflagp, 3056 stuff); 3057 if (error) 3058 goto nfsmout; 3059 } 3060 } 3061 mbuf_freem(nd->nd_mrep); 3062 nd->nd_mrep = NULL; 3063 } 3064 /* 3065 * Fill last record, iff any, out to a multiple of DIRBLKSIZ 3066 * by increasing d_reclen for the last record. 3067 */ 3068 if (blksiz > 0) { 3069 left = DIRBLKSIZ - blksiz; 3070 dp->d_reclen += left; 3071 uio_iov_base_add(uiop, left); 3072 uio_iov_len_add(uiop, -(left)); 3073 uio_uio_resid_add(uiop, -(left)); 3074 uiop->uio_offset += left; 3075 } 3076 3077 /* 3078 * If returning no data, assume end of file. 3079 * If not bigenough, return not end of file, since you aren't 3080 * returning all the data 3081 * Otherwise, return the eof flag from the server. 3082 */ 3083 if (eofp) { 3084 if (tresid == ((size_t)(uio_uio_resid(uiop)))) 3085 *eofp = 1; 3086 else if (!bigenough) 3087 *eofp = 0; 3088 else 3089 *eofp = eof; 3090 } 3091 3092 nfsmout: 3093 if (nd->nd_mrep != NULL) 3094 mbuf_freem(nd->nd_mrep); 3095 return (error); 3096 } 3097 3098 #ifndef APPLE 3099 /* 3100 * NFS V3 readdir plus RPC. Used in place of nfsrpc_readdir(). 3101 * (Also used for NFS V4 when mount flag set.) 3102 * (ditto above w.r.t. multiple of DIRBLKSIZ, etc.) 3103 */ 3104 APPLESTATIC int 3105 nfsrpc_readdirplus(vnode_t vp, struct uio *uiop, nfsuint64 *cookiep, 3106 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, 3107 int *eofp, void *stuff) 3108 { 3109 int len, left; 3110 struct dirent *dp = NULL; 3111 u_int32_t *tl; 3112 vnode_t newvp = NULLVP; 3113 struct nfsrv_descript nfsd, *nd = &nfsd; 3114 struct nameidata nami, *ndp = &nami; 3115 struct componentname *cnp = &ndp->ni_cnd; 3116 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 3117 struct nfsnode *dnp = VTONFS(vp), *np; 3118 struct nfsvattr nfsva; 3119 struct nfsfh *nfhp; 3120 nfsquad_t cookie, ncookie; 3121 int error = 0, tlen, more_dirs = 1, blksiz = 0, bigenough = 1; 3122 int attrflag, tryformoredirs = 1, eof = 0, gotmnton = 0; 3123 int isdotdot = 0, unlocknewvp = 0; 3124 long dotfileid, dotdotfileid = 0, fileno = 0; 3125 char *cp; 3126 nfsattrbit_t attrbits, dattrbits; 3127 size_t tresid; 3128 u_int32_t *tl2 = NULL, fakefileno = 0xffffffff, rderr; 3129 struct timespec dctime; 3130 3131 KASSERT(uiop->uio_iovcnt == 1 && 3132 (uio_uio_resid(uiop) & (DIRBLKSIZ - 1)) == 0, 3133 ("nfs readdirplusrpc bad uio")); 3134 timespecclear(&dctime); 3135 *attrflagp = 0; 3136 if (eofp != NULL) 3137 *eofp = 0; 3138 ndp->ni_dvp = vp; 3139 nd->nd_mrep = NULL; 3140 cookie.lval[0] = cookiep->nfsuquad[0]; 3141 cookie.lval[1] = cookiep->nfsuquad[1]; 3142 tresid = uio_uio_resid(uiop); 3143 3144 /* 3145 * For NFSv4, first create the "." and ".." entries. 3146 */ 3147 if (NFSHASNFSV4(nmp)) { 3148 NFSGETATTR_ATTRBIT(&dattrbits); 3149 NFSZERO_ATTRBIT(&attrbits); 3150 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_FILEID); 3151 if (NFSISSET_ATTRBIT(&dnp->n_vattr.na_suppattr, 3152 NFSATTRBIT_MOUNTEDONFILEID)) { 3153 NFSSETBIT_ATTRBIT(&attrbits, 3154 NFSATTRBIT_MOUNTEDONFILEID); 3155 gotmnton = 1; 3156 } else { 3157 /* 3158 * Must fake it. Use the fileno, except when the 3159 * fsid is != to that of the directory. For that 3160 * case, generate a fake fileno that is not the same. 3161 */ 3162 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_FSID); 3163 gotmnton = 0; 3164 } 3165 3166 /* 3167 * Joy, oh joy. For V4 we get to hand craft '.' and '..'. 3168 */ 3169 if (uiop->uio_offset == 0) { 3170 NFSCL_REQSTART(nd, NFSPROC_LOOKUPP, vp); 3171 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 3172 *tl++ = txdr_unsigned(NFSV4OP_GETFH); 3173 *tl = txdr_unsigned(NFSV4OP_GETATTR); 3174 (void) nfsrv_putattrbit(nd, &attrbits); 3175 error = nfscl_request(nd, vp, p, cred, stuff); 3176 if (error) 3177 return (error); 3178 dotfileid = 0; /* Fake out the compiler. */ 3179 if ((nd->nd_flag & ND_NOMOREDATA) == 0) { 3180 error = nfsm_loadattr(nd, &nfsva); 3181 if (error != 0) 3182 goto nfsmout; 3183 dctime = nfsva.na_ctime; 3184 dotfileid = nfsva.na_fileid; 3185 } 3186 if (nd->nd_repstat == 0) { 3187 NFSM_DISSECT(tl, u_int32_t *, 5 * NFSX_UNSIGNED); 3188 len = fxdr_unsigned(int, *(tl + 4)); 3189 if (len > 0 && len <= NFSX_V4FHMAX) 3190 error = nfsm_advance(nd, NFSM_RNDUP(len), -1); 3191 else 3192 error = EPERM; 3193 if (!error) { 3194 NFSM_DISSECT(tl, u_int32_t *, 2*NFSX_UNSIGNED); 3195 nfsva.na_mntonfileno = 0xffffffff; 3196 error = nfsv4_loadattr(nd, NULL, &nfsva, NULL, 3197 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0, 3198 NULL, NULL, NULL, p, cred); 3199 if (error) { 3200 dotdotfileid = dotfileid; 3201 } else if (gotmnton) { 3202 if (nfsva.na_mntonfileno != 0xffffffff) 3203 dotdotfileid = nfsva.na_mntonfileno; 3204 else 3205 dotdotfileid = nfsva.na_fileid; 3206 } else if (nfsva.na_filesid[0] == 3207 dnp->n_vattr.na_filesid[0] && 3208 nfsva.na_filesid[1] == 3209 dnp->n_vattr.na_filesid[1]) { 3210 dotdotfileid = nfsva.na_fileid; 3211 } else { 3212 do { 3213 fakefileno--; 3214 } while (fakefileno == 3215 nfsva.na_fileid); 3216 dotdotfileid = fakefileno; 3217 } 3218 } 3219 } else if (nd->nd_repstat == NFSERR_NOENT) { 3220 /* 3221 * Lookupp returns NFSERR_NOENT when we are 3222 * at the root, so just use the current dir. 3223 */ 3224 nd->nd_repstat = 0; 3225 dotdotfileid = dotfileid; 3226 } else { 3227 error = nd->nd_repstat; 3228 } 3229 mbuf_freem(nd->nd_mrep); 3230 if (error) 3231 return (error); 3232 nd->nd_mrep = NULL; 3233 dp = (struct dirent *)uio_iov_base(uiop); 3234 dp->d_type = DT_DIR; 3235 dp->d_fileno = dotfileid; 3236 dp->d_namlen = 1; 3237 dp->d_name[0] = '.'; 3238 dp->d_name[1] = '\0'; 3239 dp->d_reclen = DIRENT_SIZE(dp) + NFSX_HYPER; 3240 /* 3241 * Just make these offset cookie 0. 3242 */ 3243 tl = (u_int32_t *)&dp->d_name[4]; 3244 *tl++ = 0; 3245 *tl = 0; 3246 blksiz += dp->d_reclen; 3247 uio_uio_resid_add(uiop, -(dp->d_reclen)); 3248 uiop->uio_offset += dp->d_reclen; 3249 uio_iov_base_add(uiop, dp->d_reclen); 3250 uio_iov_len_add(uiop, -(dp->d_reclen)); 3251 dp = (struct dirent *)uio_iov_base(uiop); 3252 dp->d_type = DT_DIR; 3253 dp->d_fileno = dotdotfileid; 3254 dp->d_namlen = 2; 3255 dp->d_name[0] = '.'; 3256 dp->d_name[1] = '.'; 3257 dp->d_name[2] = '\0'; 3258 dp->d_reclen = DIRENT_SIZE(dp) + NFSX_HYPER; 3259 /* 3260 * Just make these offset cookie 0. 3261 */ 3262 tl = (u_int32_t *)&dp->d_name[4]; 3263 *tl++ = 0; 3264 *tl = 0; 3265 blksiz += dp->d_reclen; 3266 uio_uio_resid_add(uiop, -(dp->d_reclen)); 3267 uiop->uio_offset += dp->d_reclen; 3268 uio_iov_base_add(uiop, dp->d_reclen); 3269 uio_iov_len_add(uiop, -(dp->d_reclen)); 3270 } 3271 NFSREADDIRPLUS_ATTRBIT(&attrbits); 3272 if (gotmnton) 3273 NFSSETBIT_ATTRBIT(&attrbits, 3274 NFSATTRBIT_MOUNTEDONFILEID); 3275 } 3276 3277 /* 3278 * Loop around doing readdir rpc's of size nm_readdirsize. 3279 * The stopping criteria is EOF or buffer full. 3280 */ 3281 while (more_dirs && bigenough) { 3282 *attrflagp = 0; 3283 NFSCL_REQSTART(nd, NFSPROC_READDIRPLUS, vp); 3284 NFSM_BUILD(tl, u_int32_t *, 6 * NFSX_UNSIGNED); 3285 *tl++ = cookie.lval[0]; 3286 *tl++ = cookie.lval[1]; 3287 if (cookie.qval == 0) { 3288 *tl++ = 0; 3289 *tl++ = 0; 3290 } else { 3291 NFSLOCKNODE(dnp); 3292 *tl++ = dnp->n_cookieverf.nfsuquad[0]; 3293 *tl++ = dnp->n_cookieverf.nfsuquad[1]; 3294 NFSUNLOCKNODE(dnp); 3295 } 3296 *tl++ = txdr_unsigned(nmp->nm_readdirsize); 3297 *tl = txdr_unsigned(nmp->nm_readdirsize); 3298 if (nd->nd_flag & ND_NFSV4) { 3299 (void) nfsrv_putattrbit(nd, &attrbits); 3300 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 3301 *tl = txdr_unsigned(NFSV4OP_GETATTR); 3302 (void) nfsrv_putattrbit(nd, &dattrbits); 3303 } 3304 error = nfscl_request(nd, vp, p, cred, stuff); 3305 if (error) 3306 return (error); 3307 if (nd->nd_flag & ND_NFSV3) 3308 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 3309 if (nd->nd_repstat || error) { 3310 if (!error) 3311 error = nd->nd_repstat; 3312 goto nfsmout; 3313 } 3314 if ((nd->nd_flag & ND_NFSV3) != 0 && *attrflagp != 0) 3315 dctime = nap->na_ctime; 3316 NFSM_DISSECT(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 3317 NFSLOCKNODE(dnp); 3318 dnp->n_cookieverf.nfsuquad[0] = *tl++; 3319 dnp->n_cookieverf.nfsuquad[1] = *tl++; 3320 NFSUNLOCKNODE(dnp); 3321 more_dirs = fxdr_unsigned(int, *tl); 3322 if (!more_dirs) 3323 tryformoredirs = 0; 3324 3325 /* loop thru the dir entries, doctoring them to 4bsd form */ 3326 while (more_dirs && bigenough) { 3327 NFSM_DISSECT(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 3328 if (nd->nd_flag & ND_NFSV4) { 3329 ncookie.lval[0] = *tl++; 3330 ncookie.lval[1] = *tl++; 3331 } else { 3332 fileno = fxdr_unsigned(long, *++tl); 3333 tl++; 3334 } 3335 len = fxdr_unsigned(int, *tl); 3336 if (len <= 0 || len > NFS_MAXNAMLEN) { 3337 error = EBADRPC; 3338 goto nfsmout; 3339 } 3340 tlen = NFSM_RNDUP(len); 3341 if (tlen == len) 3342 tlen += 4; /* To ensure null termination */ 3343 left = DIRBLKSIZ - blksiz; 3344 if ((tlen + DIRHDSIZ + NFSX_HYPER) > left) { 3345 dp->d_reclen += left; 3346 uio_iov_base_add(uiop, left); 3347 uio_iov_len_add(uiop, -(left)); 3348 uio_uio_resid_add(uiop, -(left)); 3349 uiop->uio_offset += left; 3350 blksiz = 0; 3351 } 3352 if ((tlen + DIRHDSIZ + NFSX_HYPER) > uio_uio_resid(uiop)) 3353 bigenough = 0; 3354 if (bigenough) { 3355 dp = (struct dirent *)uio_iov_base(uiop); 3356 dp->d_namlen = len; 3357 dp->d_reclen = tlen + DIRHDSIZ + NFSX_HYPER; 3358 dp->d_type = DT_UNKNOWN; 3359 blksiz += dp->d_reclen; 3360 if (blksiz == DIRBLKSIZ) 3361 blksiz = 0; 3362 uio_uio_resid_add(uiop, -(DIRHDSIZ)); 3363 uiop->uio_offset += DIRHDSIZ; 3364 uio_iov_base_add(uiop, DIRHDSIZ); 3365 uio_iov_len_add(uiop, -(DIRHDSIZ)); 3366 cnp->cn_nameptr = uio_iov_base(uiop); 3367 cnp->cn_namelen = len; 3368 NFSCNHASHZERO(cnp); 3369 error = nfsm_mbufuio(nd, uiop, len); 3370 if (error) 3371 goto nfsmout; 3372 cp = uio_iov_base(uiop); 3373 tlen -= len; 3374 *cp = '\0'; 3375 cp += tlen; /* points to cookie storage */ 3376 tl2 = (u_int32_t *)cp; 3377 if (len == 2 && cnp->cn_nameptr[0] == '.' && 3378 cnp->cn_nameptr[1] == '.') 3379 isdotdot = 1; 3380 else 3381 isdotdot = 0; 3382 uio_iov_base_add(uiop, (tlen + NFSX_HYPER)); 3383 uio_iov_len_add(uiop, -(tlen + NFSX_HYPER)); 3384 uio_uio_resid_add(uiop, -(tlen + NFSX_HYPER)); 3385 uiop->uio_offset += (tlen + NFSX_HYPER); 3386 } else { 3387 error = nfsm_advance(nd, NFSM_RNDUP(len), -1); 3388 if (error) 3389 goto nfsmout; 3390 } 3391 nfhp = NULL; 3392 if (nd->nd_flag & ND_NFSV3) { 3393 NFSM_DISSECT(tl, u_int32_t *, 3*NFSX_UNSIGNED); 3394 ncookie.lval[0] = *tl++; 3395 ncookie.lval[1] = *tl++; 3396 attrflag = fxdr_unsigned(int, *tl); 3397 if (attrflag) { 3398 error = nfsm_loadattr(nd, &nfsva); 3399 if (error) 3400 goto nfsmout; 3401 } 3402 NFSM_DISSECT(tl,u_int32_t *,NFSX_UNSIGNED); 3403 if (*tl) { 3404 error = nfsm_getfh(nd, &nfhp); 3405 if (error) 3406 goto nfsmout; 3407 } 3408 if (!attrflag && nfhp != NULL) { 3409 FREE((caddr_t)nfhp, M_NFSFH); 3410 nfhp = NULL; 3411 } 3412 } else { 3413 rderr = 0; 3414 nfsva.na_mntonfileno = 0xffffffff; 3415 error = nfsv4_loadattr(nd, NULL, &nfsva, &nfhp, 3416 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0, 3417 NULL, NULL, &rderr, p, cred); 3418 if (error) 3419 goto nfsmout; 3420 } 3421 3422 if (bigenough) { 3423 if (nd->nd_flag & ND_NFSV4) { 3424 if (rderr) { 3425 dp->d_fileno = 0; 3426 } else if (gotmnton) { 3427 if (nfsva.na_mntonfileno != 0xffffffff) 3428 dp->d_fileno = nfsva.na_mntonfileno; 3429 else 3430 dp->d_fileno = nfsva.na_fileid; 3431 } else if (nfsva.na_filesid[0] == 3432 dnp->n_vattr.na_filesid[0] && 3433 nfsva.na_filesid[1] == 3434 dnp->n_vattr.na_filesid[1]) { 3435 dp->d_fileno = nfsva.na_fileid; 3436 } else { 3437 do { 3438 fakefileno--; 3439 } while (fakefileno == 3440 nfsva.na_fileid); 3441 dp->d_fileno = fakefileno; 3442 } 3443 } else { 3444 dp->d_fileno = fileno; 3445 } 3446 *tl2++ = cookiep->nfsuquad[0] = cookie.lval[0] = 3447 ncookie.lval[0]; 3448 *tl2 = cookiep->nfsuquad[1] = cookie.lval[1] = 3449 ncookie.lval[1]; 3450 3451 if (nfhp != NULL) { 3452 if (NFSRV_CMPFH(nfhp->nfh_fh, nfhp->nfh_len, 3453 dnp->n_fhp->nfh_fh, dnp->n_fhp->nfh_len)) { 3454 VREF(vp); 3455 newvp = vp; 3456 unlocknewvp = 0; 3457 FREE((caddr_t)nfhp, M_NFSFH); 3458 np = dnp; 3459 } else if (isdotdot != 0) { 3460 /* 3461 * Skip doing a nfscl_nget() call for "..". 3462 * There's a race between acquiring the nfs 3463 * node here and lookups that look for the 3464 * directory being read (in the parent). 3465 * It would try to get a lock on ".." here, 3466 * owning the lock on the directory being 3467 * read. Lookup will hold the lock on ".." 3468 * and try to acquire the lock on the 3469 * directory being read. 3470 * If the directory is unlocked/relocked, 3471 * then there is a LOR with the buflock 3472 * vp is relocked. 3473 */ 3474 free(nfhp, M_NFSFH); 3475 } else { 3476 error = nfscl_nget(vnode_mount(vp), vp, 3477 nfhp, cnp, p, &np, NULL, LK_EXCLUSIVE); 3478 if (!error) { 3479 newvp = NFSTOV(np); 3480 unlocknewvp = 1; 3481 } 3482 } 3483 nfhp = NULL; 3484 if (newvp != NULLVP) { 3485 error = nfscl_loadattrcache(&newvp, 3486 &nfsva, NULL, NULL, 0, 0); 3487 if (error) { 3488 if (unlocknewvp) 3489 vput(newvp); 3490 else 3491 vrele(newvp); 3492 goto nfsmout; 3493 } 3494 dp->d_type = 3495 vtonfs_dtype(np->n_vattr.na_type); 3496 ndp->ni_vp = newvp; 3497 NFSCNHASH(cnp, HASHINIT); 3498 if (cnp->cn_namelen <= NCHNAMLEN && 3499 (newvp->v_type != VDIR || 3500 dctime.tv_sec != 0)) { 3501 cache_enter_time(ndp->ni_dvp, 3502 ndp->ni_vp, cnp, 3503 &nfsva.na_ctime, 3504 newvp->v_type != VDIR ? NULL : 3505 &dctime); 3506 } 3507 if (unlocknewvp) 3508 vput(newvp); 3509 else 3510 vrele(newvp); 3511 newvp = NULLVP; 3512 } 3513 } 3514 } else if (nfhp != NULL) { 3515 FREE((caddr_t)nfhp, M_NFSFH); 3516 } 3517 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 3518 more_dirs = fxdr_unsigned(int, *tl); 3519 } 3520 /* 3521 * If at end of rpc data, get the eof boolean 3522 */ 3523 if (!more_dirs) { 3524 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 3525 eof = fxdr_unsigned(int, *tl); 3526 if (tryformoredirs) 3527 more_dirs = !eof; 3528 if (nd->nd_flag & ND_NFSV4) { 3529 error = nfscl_postop_attr(nd, nap, attrflagp, 3530 stuff); 3531 if (error) 3532 goto nfsmout; 3533 } 3534 } 3535 mbuf_freem(nd->nd_mrep); 3536 nd->nd_mrep = NULL; 3537 } 3538 /* 3539 * Fill last record, iff any, out to a multiple of DIRBLKSIZ 3540 * by increasing d_reclen for the last record. 3541 */ 3542 if (blksiz > 0) { 3543 left = DIRBLKSIZ - blksiz; 3544 dp->d_reclen += left; 3545 uio_iov_base_add(uiop, left); 3546 uio_iov_len_add(uiop, -(left)); 3547 uio_uio_resid_add(uiop, -(left)); 3548 uiop->uio_offset += left; 3549 } 3550 3551 /* 3552 * If returning no data, assume end of file. 3553 * If not bigenough, return not end of file, since you aren't 3554 * returning all the data 3555 * Otherwise, return the eof flag from the server. 3556 */ 3557 if (eofp != NULL) { 3558 if (tresid == uio_uio_resid(uiop)) 3559 *eofp = 1; 3560 else if (!bigenough) 3561 *eofp = 0; 3562 else 3563 *eofp = eof; 3564 } 3565 3566 nfsmout: 3567 if (nd->nd_mrep != NULL) 3568 mbuf_freem(nd->nd_mrep); 3569 return (error); 3570 } 3571 #endif /* !APPLE */ 3572 3573 /* 3574 * Nfs commit rpc 3575 */ 3576 APPLESTATIC int 3577 nfsrpc_commit(vnode_t vp, u_quad_t offset, int cnt, struct ucred *cred, 3578 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff) 3579 { 3580 u_int32_t *tl; 3581 struct nfsrv_descript nfsd, *nd = &nfsd; 3582 nfsattrbit_t attrbits; 3583 int error; 3584 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 3585 3586 *attrflagp = 0; 3587 NFSCL_REQSTART(nd, NFSPROC_COMMIT, vp); 3588 NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 3589 txdr_hyper(offset, tl); 3590 tl += 2; 3591 *tl = txdr_unsigned(cnt); 3592 if (nd->nd_flag & ND_NFSV4) { 3593 /* 3594 * And do a Getattr op. 3595 */ 3596 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 3597 *tl = txdr_unsigned(NFSV4OP_GETATTR); 3598 NFSGETATTR_ATTRBIT(&attrbits); 3599 (void) nfsrv_putattrbit(nd, &attrbits); 3600 } 3601 error = nfscl_request(nd, vp, p, cred, stuff); 3602 if (error) 3603 return (error); 3604 error = nfscl_wcc_data(nd, vp, nap, attrflagp, NULL, stuff); 3605 if (!error && !nd->nd_repstat) { 3606 NFSM_DISSECT(tl, u_int32_t *, NFSX_VERF); 3607 NFSLOCKMNT(nmp); 3608 if (NFSBCMP(nmp->nm_verf, tl, NFSX_VERF)) { 3609 NFSBCOPY(tl, nmp->nm_verf, NFSX_VERF); 3610 nd->nd_repstat = NFSERR_STALEWRITEVERF; 3611 } 3612 NFSUNLOCKMNT(nmp); 3613 if (nd->nd_flag & ND_NFSV4) 3614 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 3615 } 3616 nfsmout: 3617 if (!error && nd->nd_repstat) 3618 error = nd->nd_repstat; 3619 mbuf_freem(nd->nd_mrep); 3620 return (error); 3621 } 3622 3623 /* 3624 * NFS byte range lock rpc. 3625 * (Mostly just calls one of the three lower level RPC routines.) 3626 */ 3627 APPLESTATIC int 3628 nfsrpc_advlock(vnode_t vp, off_t size, int op, struct flock *fl, 3629 int reclaim, struct ucred *cred, NFSPROC_T *p, void *id, int flags) 3630 { 3631 struct nfscllockowner *lp; 3632 struct nfsclclient *clp; 3633 struct nfsfh *nfhp; 3634 struct nfsrv_descript nfsd, *nd = &nfsd; 3635 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 3636 u_int64_t off, len; 3637 off_t start, end; 3638 u_int32_t clidrev = 0; 3639 int error = 0, newone = 0, expireret = 0, retrycnt, donelocally; 3640 int callcnt, dorpc; 3641 3642 /* 3643 * Convert the flock structure into a start and end and do POSIX 3644 * bounds checking. 3645 */ 3646 switch (fl->l_whence) { 3647 case SEEK_SET: 3648 case SEEK_CUR: 3649 /* 3650 * Caller is responsible for adding any necessary offset 3651 * when SEEK_CUR is used. 3652 */ 3653 start = fl->l_start; 3654 off = fl->l_start; 3655 break; 3656 case SEEK_END: 3657 start = size + fl->l_start; 3658 off = size + fl->l_start; 3659 break; 3660 default: 3661 return (EINVAL); 3662 }; 3663 if (start < 0) 3664 return (EINVAL); 3665 if (fl->l_len != 0) { 3666 end = start + fl->l_len - 1; 3667 if (end < start) 3668 return (EINVAL); 3669 } 3670 3671 len = fl->l_len; 3672 if (len == 0) 3673 len = NFS64BITSSET; 3674 retrycnt = 0; 3675 do { 3676 nd->nd_repstat = 0; 3677 if (op == F_GETLK) { 3678 error = nfscl_getcl(vnode_mount(vp), cred, p, 1, &clp); 3679 if (error) 3680 return (error); 3681 error = nfscl_lockt(vp, clp, off, len, fl, p, id, flags); 3682 if (!error) { 3683 clidrev = clp->nfsc_clientidrev; 3684 error = nfsrpc_lockt(nd, vp, clp, off, len, fl, cred, 3685 p, id, flags); 3686 } else if (error == -1) { 3687 error = 0; 3688 } 3689 nfscl_clientrelease(clp); 3690 } else if (op == F_UNLCK && fl->l_type == F_UNLCK) { 3691 /* 3692 * We must loop around for all lockowner cases. 3693 */ 3694 callcnt = 0; 3695 error = nfscl_getcl(vnode_mount(vp), cred, p, 1, &clp); 3696 if (error) 3697 return (error); 3698 do { 3699 error = nfscl_relbytelock(vp, off, len, cred, p, callcnt, 3700 clp, id, flags, &lp, &dorpc); 3701 /* 3702 * If it returns a NULL lp, we're done. 3703 */ 3704 if (lp == NULL) { 3705 if (callcnt == 0) 3706 nfscl_clientrelease(clp); 3707 else 3708 nfscl_releasealllocks(clp, vp, p, id, flags); 3709 return (error); 3710 } 3711 if (nmp->nm_clp != NULL) 3712 clidrev = nmp->nm_clp->nfsc_clientidrev; 3713 else 3714 clidrev = 0; 3715 /* 3716 * If the server doesn't support Posix lock semantics, 3717 * only allow locks on the entire file, since it won't 3718 * handle overlapping byte ranges. 3719 * There might still be a problem when a lock 3720 * upgrade/downgrade (read<->write) occurs, since the 3721 * server "might" expect an unlock first? 3722 */ 3723 if (dorpc && (lp->nfsl_open->nfso_posixlock || 3724 (off == 0 && len == NFS64BITSSET))) { 3725 /* 3726 * Since the lock records will go away, we must 3727 * wait for grace and delay here. 3728 */ 3729 do { 3730 error = nfsrpc_locku(nd, nmp, lp, off, len, 3731 NFSV4LOCKT_READ, cred, p, 0); 3732 if ((nd->nd_repstat == NFSERR_GRACE || 3733 nd->nd_repstat == NFSERR_DELAY) && 3734 error == 0) 3735 (void) nfs_catnap(PZERO, (int)nd->nd_repstat, 3736 "nfs_advlock"); 3737 } while ((nd->nd_repstat == NFSERR_GRACE || 3738 nd->nd_repstat == NFSERR_DELAY) && error == 0); 3739 } 3740 callcnt++; 3741 } while (error == 0 && nd->nd_repstat == 0); 3742 nfscl_releasealllocks(clp, vp, p, id, flags); 3743 } else if (op == F_SETLK) { 3744 error = nfscl_getbytelock(vp, off, len, fl->l_type, cred, p, 3745 NULL, 0, id, flags, NULL, NULL, &lp, &newone, &donelocally); 3746 if (error || donelocally) { 3747 return (error); 3748 } 3749 if (nmp->nm_clp != NULL) 3750 clidrev = nmp->nm_clp->nfsc_clientidrev; 3751 else 3752 clidrev = 0; 3753 nfhp = VTONFS(vp)->n_fhp; 3754 if (!lp->nfsl_open->nfso_posixlock && 3755 (off != 0 || len != NFS64BITSSET)) { 3756 error = EINVAL; 3757 } else { 3758 error = nfsrpc_lock(nd, nmp, vp, nfhp->nfh_fh, 3759 nfhp->nfh_len, lp, newone, reclaim, off, 3760 len, fl->l_type, cred, p, 0); 3761 } 3762 if (!error) 3763 error = nd->nd_repstat; 3764 nfscl_lockrelease(lp, error, newone); 3765 } else { 3766 error = EINVAL; 3767 } 3768 if (!error) 3769 error = nd->nd_repstat; 3770 if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 3771 error == NFSERR_STALEDONTRECOVER || 3772 error == NFSERR_STALECLIENTID || error == NFSERR_DELAY || 3773 error == NFSERR_BADSESSION) { 3774 (void) nfs_catnap(PZERO, error, "nfs_advlock"); 3775 } else if ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) 3776 && clidrev != 0) { 3777 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p); 3778 retrycnt++; 3779 } 3780 } while (error == NFSERR_GRACE || 3781 error == NFSERR_STALECLIENTID || error == NFSERR_DELAY || 3782 error == NFSERR_STALEDONTRECOVER || error == NFSERR_STALESTATEID || 3783 error == NFSERR_BADSESSION || 3784 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) && 3785 expireret == 0 && clidrev != 0 && retrycnt < 4)); 3786 if (error && retrycnt >= 4) 3787 error = EIO; 3788 return (error); 3789 } 3790 3791 /* 3792 * The lower level routine for the LockT case. 3793 */ 3794 APPLESTATIC int 3795 nfsrpc_lockt(struct nfsrv_descript *nd, vnode_t vp, 3796 struct nfsclclient *clp, u_int64_t off, u_int64_t len, struct flock *fl, 3797 struct ucred *cred, NFSPROC_T *p, void *id, int flags) 3798 { 3799 u_int32_t *tl; 3800 int error, type, size; 3801 uint8_t own[NFSV4CL_LOCKNAMELEN + NFSX_V4FHMAX]; 3802 struct nfsnode *np; 3803 struct nfsmount *nmp; 3804 3805 nmp = VFSTONFS(vp->v_mount); 3806 NFSCL_REQSTART(nd, NFSPROC_LOCKT, vp); 3807 NFSM_BUILD(tl, u_int32_t *, 7 * NFSX_UNSIGNED); 3808 if (fl->l_type == F_RDLCK) 3809 *tl++ = txdr_unsigned(NFSV4LOCKT_READ); 3810 else 3811 *tl++ = txdr_unsigned(NFSV4LOCKT_WRITE); 3812 txdr_hyper(off, tl); 3813 tl += 2; 3814 txdr_hyper(len, tl); 3815 tl += 2; 3816 *tl++ = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[0]; 3817 *tl = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[1]; 3818 nfscl_filllockowner(id, own, flags); 3819 np = VTONFS(vp); 3820 NFSBCOPY(np->n_fhp->nfh_fh, &own[NFSV4CL_LOCKNAMELEN], 3821 np->n_fhp->nfh_len); 3822 (void)nfsm_strtom(nd, own, NFSV4CL_LOCKNAMELEN + np->n_fhp->nfh_len); 3823 error = nfscl_request(nd, vp, p, cred, NULL); 3824 if (error) 3825 return (error); 3826 if (nd->nd_repstat == 0) { 3827 fl->l_type = F_UNLCK; 3828 } else if (nd->nd_repstat == NFSERR_DENIED) { 3829 nd->nd_repstat = 0; 3830 fl->l_whence = SEEK_SET; 3831 NFSM_DISSECT(tl, u_int32_t *, 8 * NFSX_UNSIGNED); 3832 fl->l_start = fxdr_hyper(tl); 3833 tl += 2; 3834 len = fxdr_hyper(tl); 3835 tl += 2; 3836 if (len == NFS64BITSSET) 3837 fl->l_len = 0; 3838 else 3839 fl->l_len = len; 3840 type = fxdr_unsigned(int, *tl++); 3841 if (type == NFSV4LOCKT_WRITE) 3842 fl->l_type = F_WRLCK; 3843 else 3844 fl->l_type = F_RDLCK; 3845 /* 3846 * XXX For now, I have no idea what to do with the 3847 * conflicting lock_owner, so I'll just set the pid == 0 3848 * and skip over the lock_owner. 3849 */ 3850 fl->l_pid = (pid_t)0; 3851 tl += 2; 3852 size = fxdr_unsigned(int, *tl); 3853 if (size < 0 || size > NFSV4_OPAQUELIMIT) 3854 error = EBADRPC; 3855 if (!error) 3856 error = nfsm_advance(nd, NFSM_RNDUP(size), -1); 3857 } else if (nd->nd_repstat == NFSERR_STALECLIENTID || 3858 nd->nd_repstat == NFSERR_BADSESSION) 3859 nfscl_initiate_recovery(clp); 3860 nfsmout: 3861 mbuf_freem(nd->nd_mrep); 3862 return (error); 3863 } 3864 3865 /* 3866 * Lower level function that performs the LockU RPC. 3867 */ 3868 static int 3869 nfsrpc_locku(struct nfsrv_descript *nd, struct nfsmount *nmp, 3870 struct nfscllockowner *lp, u_int64_t off, u_int64_t len, 3871 u_int32_t type, struct ucred *cred, NFSPROC_T *p, int syscred) 3872 { 3873 u_int32_t *tl; 3874 int error; 3875 3876 nfscl_reqstart(nd, NFSPROC_LOCKU, nmp, lp->nfsl_open->nfso_fh, 3877 lp->nfsl_open->nfso_fhlen, NULL, NULL); 3878 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID + 6 * NFSX_UNSIGNED); 3879 *tl++ = txdr_unsigned(type); 3880 *tl = txdr_unsigned(lp->nfsl_seqid); 3881 if (nfstest_outofseq && 3882 (arc4random() % nfstest_outofseq) == 0) 3883 *tl = txdr_unsigned(lp->nfsl_seqid + 1); 3884 tl++; 3885 if (NFSHASNFSV4N(nmp)) 3886 *tl++ = 0; 3887 else 3888 *tl++ = lp->nfsl_stateid.seqid; 3889 *tl++ = lp->nfsl_stateid.other[0]; 3890 *tl++ = lp->nfsl_stateid.other[1]; 3891 *tl++ = lp->nfsl_stateid.other[2]; 3892 txdr_hyper(off, tl); 3893 tl += 2; 3894 txdr_hyper(len, tl); 3895 if (syscred) 3896 nd->nd_flag |= ND_USEGSSNAME; 3897 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 3898 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 3899 NFSCL_INCRSEQID(lp->nfsl_seqid, nd); 3900 if (error) 3901 return (error); 3902 if (nd->nd_repstat == 0) { 3903 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID); 3904 lp->nfsl_stateid.seqid = *tl++; 3905 lp->nfsl_stateid.other[0] = *tl++; 3906 lp->nfsl_stateid.other[1] = *tl++; 3907 lp->nfsl_stateid.other[2] = *tl; 3908 } else if (nd->nd_repstat == NFSERR_STALESTATEID || 3909 nd->nd_repstat == NFSERR_BADSESSION) 3910 nfscl_initiate_recovery(lp->nfsl_open->nfso_own->nfsow_clp); 3911 nfsmout: 3912 mbuf_freem(nd->nd_mrep); 3913 return (error); 3914 } 3915 3916 /* 3917 * The actual Lock RPC. 3918 */ 3919 APPLESTATIC int 3920 nfsrpc_lock(struct nfsrv_descript *nd, struct nfsmount *nmp, vnode_t vp, 3921 u_int8_t *nfhp, int fhlen, struct nfscllockowner *lp, int newone, 3922 int reclaim, u_int64_t off, u_int64_t len, short type, struct ucred *cred, 3923 NFSPROC_T *p, int syscred) 3924 { 3925 u_int32_t *tl; 3926 int error, size; 3927 uint8_t own[NFSV4CL_LOCKNAMELEN + NFSX_V4FHMAX]; 3928 3929 nfscl_reqstart(nd, NFSPROC_LOCK, nmp, nfhp, fhlen, NULL, NULL); 3930 NFSM_BUILD(tl, u_int32_t *, 7 * NFSX_UNSIGNED); 3931 if (type == F_RDLCK) 3932 *tl++ = txdr_unsigned(NFSV4LOCKT_READ); 3933 else 3934 *tl++ = txdr_unsigned(NFSV4LOCKT_WRITE); 3935 *tl++ = txdr_unsigned(reclaim); 3936 txdr_hyper(off, tl); 3937 tl += 2; 3938 txdr_hyper(len, tl); 3939 tl += 2; 3940 if (newone) { 3941 *tl = newnfs_true; 3942 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID + 3943 2 * NFSX_UNSIGNED + NFSX_HYPER); 3944 *tl++ = txdr_unsigned(lp->nfsl_open->nfso_own->nfsow_seqid); 3945 if (NFSHASNFSV4N(nmp)) 3946 *tl++ = 0; 3947 else 3948 *tl++ = lp->nfsl_open->nfso_stateid.seqid; 3949 *tl++ = lp->nfsl_open->nfso_stateid.other[0]; 3950 *tl++ = lp->nfsl_open->nfso_stateid.other[1]; 3951 *tl++ = lp->nfsl_open->nfso_stateid.other[2]; 3952 *tl++ = txdr_unsigned(lp->nfsl_seqid); 3953 *tl++ = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[0]; 3954 *tl = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[1]; 3955 NFSBCOPY(lp->nfsl_owner, own, NFSV4CL_LOCKNAMELEN); 3956 NFSBCOPY(nfhp, &own[NFSV4CL_LOCKNAMELEN], fhlen); 3957 (void)nfsm_strtom(nd, own, NFSV4CL_LOCKNAMELEN + fhlen); 3958 } else { 3959 *tl = newnfs_false; 3960 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID + NFSX_UNSIGNED); 3961 if (NFSHASNFSV4N(nmp)) 3962 *tl++ = 0; 3963 else 3964 *tl++ = lp->nfsl_stateid.seqid; 3965 *tl++ = lp->nfsl_stateid.other[0]; 3966 *tl++ = lp->nfsl_stateid.other[1]; 3967 *tl++ = lp->nfsl_stateid.other[2]; 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 } 3973 if (syscred) 3974 nd->nd_flag |= ND_USEGSSNAME; 3975 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, vp, p, cred, 3976 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 3977 if (error) 3978 return (error); 3979 if (newone) 3980 NFSCL_INCRSEQID(lp->nfsl_open->nfso_own->nfsow_seqid, nd); 3981 NFSCL_INCRSEQID(lp->nfsl_seqid, nd); 3982 if (nd->nd_repstat == 0) { 3983 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID); 3984 lp->nfsl_stateid.seqid = *tl++; 3985 lp->nfsl_stateid.other[0] = *tl++; 3986 lp->nfsl_stateid.other[1] = *tl++; 3987 lp->nfsl_stateid.other[2] = *tl; 3988 } else if (nd->nd_repstat == NFSERR_DENIED) { 3989 NFSM_DISSECT(tl, u_int32_t *, 8 * NFSX_UNSIGNED); 3990 size = fxdr_unsigned(int, *(tl + 7)); 3991 if (size < 0 || size > NFSV4_OPAQUELIMIT) 3992 error = EBADRPC; 3993 if (!error) 3994 error = nfsm_advance(nd, NFSM_RNDUP(size), -1); 3995 } else if (nd->nd_repstat == NFSERR_STALESTATEID || 3996 nd->nd_repstat == NFSERR_BADSESSION) 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 * nfs statfs rpc 4005 * (always called with the vp for the mount point) 4006 */ 4007 APPLESTATIC int 4008 nfsrpc_statfs(vnode_t vp, struct nfsstatfs *sbp, struct nfsfsinfo *fsp, 4009 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, 4010 void *stuff) 4011 { 4012 u_int32_t *tl = NULL; 4013 struct nfsrv_descript nfsd, *nd = &nfsd; 4014 struct nfsmount *nmp; 4015 nfsattrbit_t attrbits; 4016 int error; 4017 4018 *attrflagp = 0; 4019 nmp = VFSTONFS(vnode_mount(vp)); 4020 if (NFSHASNFSV4(nmp)) { 4021 /* 4022 * For V4, you actually do a getattr. 4023 */ 4024 NFSCL_REQSTART(nd, NFSPROC_GETATTR, vp); 4025 NFSSTATFS_GETATTRBIT(&attrbits); 4026 (void) nfsrv_putattrbit(nd, &attrbits); 4027 nd->nd_flag |= ND_USEGSSNAME; 4028 error = nfscl_request(nd, vp, p, cred, stuff); 4029 if (error) 4030 return (error); 4031 if (nd->nd_repstat == 0) { 4032 error = nfsv4_loadattr(nd, NULL, nap, NULL, NULL, 0, 4033 NULL, NULL, sbp, fsp, NULL, 0, NULL, NULL, NULL, p, 4034 cred); 4035 if (!error) { 4036 nmp->nm_fsid[0] = nap->na_filesid[0]; 4037 nmp->nm_fsid[1] = nap->na_filesid[1]; 4038 NFSSETHASSETFSID(nmp); 4039 *attrflagp = 1; 4040 } 4041 } else { 4042 error = nd->nd_repstat; 4043 } 4044 if (error) 4045 goto nfsmout; 4046 } else { 4047 NFSCL_REQSTART(nd, NFSPROC_FSSTAT, vp); 4048 error = nfscl_request(nd, vp, p, cred, stuff); 4049 if (error) 4050 return (error); 4051 if (nd->nd_flag & ND_NFSV3) { 4052 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 4053 if (error) 4054 goto nfsmout; 4055 } 4056 if (nd->nd_repstat) { 4057 error = nd->nd_repstat; 4058 goto nfsmout; 4059 } 4060 NFSM_DISSECT(tl, u_int32_t *, 4061 NFSX_STATFS(nd->nd_flag & ND_NFSV3)); 4062 } 4063 if (NFSHASNFSV3(nmp)) { 4064 sbp->sf_tbytes = fxdr_hyper(tl); tl += 2; 4065 sbp->sf_fbytes = fxdr_hyper(tl); tl += 2; 4066 sbp->sf_abytes = fxdr_hyper(tl); tl += 2; 4067 sbp->sf_tfiles = fxdr_hyper(tl); tl += 2; 4068 sbp->sf_ffiles = fxdr_hyper(tl); tl += 2; 4069 sbp->sf_afiles = fxdr_hyper(tl); tl += 2; 4070 sbp->sf_invarsec = fxdr_unsigned(u_int32_t, *tl); 4071 } else if (NFSHASNFSV4(nmp) == 0) { 4072 sbp->sf_tsize = fxdr_unsigned(u_int32_t, *tl++); 4073 sbp->sf_bsize = fxdr_unsigned(u_int32_t, *tl++); 4074 sbp->sf_blocks = fxdr_unsigned(u_int32_t, *tl++); 4075 sbp->sf_bfree = fxdr_unsigned(u_int32_t, *tl++); 4076 sbp->sf_bavail = fxdr_unsigned(u_int32_t, *tl); 4077 } 4078 nfsmout: 4079 mbuf_freem(nd->nd_mrep); 4080 return (error); 4081 } 4082 4083 /* 4084 * nfs pathconf rpc 4085 */ 4086 APPLESTATIC int 4087 nfsrpc_pathconf(vnode_t vp, struct nfsv3_pathconf *pc, 4088 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, 4089 void *stuff) 4090 { 4091 struct nfsrv_descript nfsd, *nd = &nfsd; 4092 struct nfsmount *nmp; 4093 u_int32_t *tl; 4094 nfsattrbit_t attrbits; 4095 int error; 4096 4097 *attrflagp = 0; 4098 nmp = VFSTONFS(vnode_mount(vp)); 4099 if (NFSHASNFSV4(nmp)) { 4100 /* 4101 * For V4, you actually do a getattr. 4102 */ 4103 NFSCL_REQSTART(nd, NFSPROC_GETATTR, vp); 4104 NFSPATHCONF_GETATTRBIT(&attrbits); 4105 (void) nfsrv_putattrbit(nd, &attrbits); 4106 nd->nd_flag |= ND_USEGSSNAME; 4107 error = nfscl_request(nd, vp, p, cred, stuff); 4108 if (error) 4109 return (error); 4110 if (nd->nd_repstat == 0) { 4111 error = nfsv4_loadattr(nd, NULL, nap, NULL, NULL, 0, 4112 pc, NULL, NULL, NULL, NULL, 0, NULL, NULL, NULL, p, 4113 cred); 4114 if (!error) 4115 *attrflagp = 1; 4116 } else { 4117 error = nd->nd_repstat; 4118 } 4119 } else { 4120 NFSCL_REQSTART(nd, NFSPROC_PATHCONF, vp); 4121 error = nfscl_request(nd, vp, p, cred, stuff); 4122 if (error) 4123 return (error); 4124 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 4125 if (nd->nd_repstat && !error) 4126 error = nd->nd_repstat; 4127 if (!error) { 4128 NFSM_DISSECT(tl, u_int32_t *, NFSX_V3PATHCONF); 4129 pc->pc_linkmax = fxdr_unsigned(u_int32_t, *tl++); 4130 pc->pc_namemax = fxdr_unsigned(u_int32_t, *tl++); 4131 pc->pc_notrunc = fxdr_unsigned(u_int32_t, *tl++); 4132 pc->pc_chownrestricted = 4133 fxdr_unsigned(u_int32_t, *tl++); 4134 pc->pc_caseinsensitive = 4135 fxdr_unsigned(u_int32_t, *tl++); 4136 pc->pc_casepreserving = fxdr_unsigned(u_int32_t, *tl); 4137 } 4138 } 4139 nfsmout: 4140 mbuf_freem(nd->nd_mrep); 4141 return (error); 4142 } 4143 4144 /* 4145 * nfs version 3 fsinfo rpc call 4146 */ 4147 APPLESTATIC int 4148 nfsrpc_fsinfo(vnode_t vp, struct nfsfsinfo *fsp, struct ucred *cred, 4149 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff) 4150 { 4151 u_int32_t *tl; 4152 struct nfsrv_descript nfsd, *nd = &nfsd; 4153 int error; 4154 4155 *attrflagp = 0; 4156 NFSCL_REQSTART(nd, NFSPROC_FSINFO, vp); 4157 error = nfscl_request(nd, vp, p, cred, stuff); 4158 if (error) 4159 return (error); 4160 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 4161 if (nd->nd_repstat && !error) 4162 error = nd->nd_repstat; 4163 if (!error) { 4164 NFSM_DISSECT(tl, u_int32_t *, NFSX_V3FSINFO); 4165 fsp->fs_rtmax = fxdr_unsigned(u_int32_t, *tl++); 4166 fsp->fs_rtpref = fxdr_unsigned(u_int32_t, *tl++); 4167 fsp->fs_rtmult = fxdr_unsigned(u_int32_t, *tl++); 4168 fsp->fs_wtmax = fxdr_unsigned(u_int32_t, *tl++); 4169 fsp->fs_wtpref = fxdr_unsigned(u_int32_t, *tl++); 4170 fsp->fs_wtmult = fxdr_unsigned(u_int32_t, *tl++); 4171 fsp->fs_dtpref = fxdr_unsigned(u_int32_t, *tl++); 4172 fsp->fs_maxfilesize = fxdr_hyper(tl); 4173 tl += 2; 4174 fxdr_nfsv3time(tl, &fsp->fs_timedelta); 4175 tl += 2; 4176 fsp->fs_properties = fxdr_unsigned(u_int32_t, *tl); 4177 } 4178 nfsmout: 4179 mbuf_freem(nd->nd_mrep); 4180 return (error); 4181 } 4182 4183 /* 4184 * This function performs the Renew RPC. 4185 */ 4186 APPLESTATIC int 4187 nfsrpc_renew(struct nfsclclient *clp, struct nfsclds *dsp, struct ucred *cred, 4188 NFSPROC_T *p) 4189 { 4190 u_int32_t *tl; 4191 struct nfsrv_descript nfsd; 4192 struct nfsrv_descript *nd = &nfsd; 4193 struct nfsmount *nmp; 4194 int error; 4195 struct nfssockreq *nrp; 4196 4197 nmp = clp->nfsc_nmp; 4198 if (nmp == NULL) 4199 return (0); 4200 nfscl_reqstart(nd, NFSPROC_RENEW, nmp, NULL, 0, NULL, 4201 &dsp->nfsclds_sess); 4202 if (!NFSHASNFSV4N(nmp)) { 4203 /* NFSv4.1 just uses a Sequence Op and not a Renew. */ 4204 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 4205 *tl++ = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[0]; 4206 *tl = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[1]; 4207 } 4208 nrp = dsp->nfsclds_sockp; 4209 if (nrp == NULL) 4210 /* If NULL, use the MDS socket. */ 4211 nrp = &nmp->nm_sockreq; 4212 nd->nd_flag |= ND_USEGSSNAME; 4213 error = newnfs_request(nd, nmp, NULL, nrp, NULL, p, cred, 4214 NFS_PROG, NFS_VER4, NULL, 1, NULL, &dsp->nfsclds_sess); 4215 if (error) 4216 return (error); 4217 error = nd->nd_repstat; 4218 mbuf_freem(nd->nd_mrep); 4219 return (error); 4220 } 4221 4222 /* 4223 * This function performs the Releaselockowner RPC. 4224 */ 4225 APPLESTATIC int 4226 nfsrpc_rellockown(struct nfsmount *nmp, struct nfscllockowner *lp, 4227 uint8_t *fh, int fhlen, struct ucred *cred, NFSPROC_T *p) 4228 { 4229 struct nfsrv_descript nfsd, *nd = &nfsd; 4230 u_int32_t *tl; 4231 int error; 4232 uint8_t own[NFSV4CL_LOCKNAMELEN + NFSX_V4FHMAX]; 4233 4234 if (NFSHASNFSV4N(nmp)) { 4235 /* For NFSv4.1, do a FreeStateID. */ 4236 nfscl_reqstart(nd, NFSPROC_FREESTATEID, nmp, NULL, 0, NULL, 4237 NULL); 4238 nfsm_stateidtom(nd, &lp->nfsl_stateid, NFSSTATEID_PUTSTATEID); 4239 } else { 4240 nfscl_reqstart(nd, NFSPROC_RELEASELCKOWN, nmp, NULL, 0, NULL, 4241 NULL); 4242 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 4243 *tl++ = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[0]; 4244 *tl = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[1]; 4245 NFSBCOPY(lp->nfsl_owner, own, NFSV4CL_LOCKNAMELEN); 4246 NFSBCOPY(fh, &own[NFSV4CL_LOCKNAMELEN], fhlen); 4247 (void)nfsm_strtom(nd, own, NFSV4CL_LOCKNAMELEN + fhlen); 4248 } 4249 nd->nd_flag |= ND_USEGSSNAME; 4250 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 4251 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4252 if (error) 4253 return (error); 4254 error = nd->nd_repstat; 4255 mbuf_freem(nd->nd_mrep); 4256 return (error); 4257 } 4258 4259 /* 4260 * This function performs the Compound to get the mount pt FH. 4261 */ 4262 APPLESTATIC int 4263 nfsrpc_getdirpath(struct nfsmount *nmp, u_char *dirpath, struct ucred *cred, 4264 NFSPROC_T *p) 4265 { 4266 u_int32_t *tl; 4267 struct nfsrv_descript nfsd; 4268 struct nfsrv_descript *nd = &nfsd; 4269 u_char *cp, *cp2; 4270 int error, cnt, len, setnil; 4271 u_int32_t *opcntp; 4272 4273 nfscl_reqstart(nd, NFSPROC_PUTROOTFH, nmp, NULL, 0, &opcntp, NULL); 4274 cp = dirpath; 4275 cnt = 0; 4276 do { 4277 setnil = 0; 4278 while (*cp == '/') 4279 cp++; 4280 cp2 = cp; 4281 while (*cp2 != '\0' && *cp2 != '/') 4282 cp2++; 4283 if (*cp2 == '/') { 4284 setnil = 1; 4285 *cp2 = '\0'; 4286 } 4287 if (cp2 != cp) { 4288 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 4289 *tl = txdr_unsigned(NFSV4OP_LOOKUP); 4290 nfsm_strtom(nd, cp, strlen(cp)); 4291 cnt++; 4292 } 4293 if (setnil) 4294 *cp2++ = '/'; 4295 cp = cp2; 4296 } while (*cp != '\0'); 4297 if (NFSHASNFSV4N(nmp)) 4298 /* Has a Sequence Op done by nfscl_reqstart(). */ 4299 *opcntp = txdr_unsigned(3 + cnt); 4300 else 4301 *opcntp = txdr_unsigned(2 + cnt); 4302 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 4303 *tl = txdr_unsigned(NFSV4OP_GETFH); 4304 nd->nd_flag |= ND_USEGSSNAME; 4305 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 4306 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4307 if (error) 4308 return (error); 4309 if (nd->nd_repstat == 0) { 4310 NFSM_DISSECT(tl, u_int32_t *, (3 + 2 * cnt) * NFSX_UNSIGNED); 4311 tl += (2 + 2 * cnt); 4312 if ((len = fxdr_unsigned(int, *tl)) <= 0 || 4313 len > NFSX_FHMAX) { 4314 nd->nd_repstat = NFSERR_BADXDR; 4315 } else { 4316 nd->nd_repstat = nfsrv_mtostr(nd, nmp->nm_fh, len); 4317 if (nd->nd_repstat == 0) 4318 nmp->nm_fhsize = len; 4319 } 4320 } 4321 error = nd->nd_repstat; 4322 nfsmout: 4323 mbuf_freem(nd->nd_mrep); 4324 return (error); 4325 } 4326 4327 /* 4328 * This function performs the Delegreturn RPC. 4329 */ 4330 APPLESTATIC int 4331 nfsrpc_delegreturn(struct nfscldeleg *dp, struct ucred *cred, 4332 struct nfsmount *nmp, NFSPROC_T *p, int syscred) 4333 { 4334 u_int32_t *tl; 4335 struct nfsrv_descript nfsd; 4336 struct nfsrv_descript *nd = &nfsd; 4337 int error; 4338 4339 nfscl_reqstart(nd, NFSPROC_DELEGRETURN, nmp, dp->nfsdl_fh, 4340 dp->nfsdl_fhlen, NULL, NULL); 4341 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID); 4342 if (NFSHASNFSV4N(nmp)) 4343 *tl++ = 0; 4344 else 4345 *tl++ = dp->nfsdl_stateid.seqid; 4346 *tl++ = dp->nfsdl_stateid.other[0]; 4347 *tl++ = dp->nfsdl_stateid.other[1]; 4348 *tl = dp->nfsdl_stateid.other[2]; 4349 if (syscred) 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 * nfs getacl call. 4362 */ 4363 APPLESTATIC int 4364 nfsrpc_getacl(vnode_t vp, struct ucred *cred, NFSPROC_T *p, 4365 struct acl *aclp, void *stuff) 4366 { 4367 struct nfsrv_descript nfsd, *nd = &nfsd; 4368 int error; 4369 nfsattrbit_t attrbits; 4370 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 4371 4372 if (nfsrv_useacl == 0 || !NFSHASNFSV4(nmp)) 4373 return (EOPNOTSUPP); 4374 NFSCL_REQSTART(nd, NFSPROC_GETACL, vp); 4375 NFSZERO_ATTRBIT(&attrbits); 4376 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_ACL); 4377 (void) nfsrv_putattrbit(nd, &attrbits); 4378 error = nfscl_request(nd, vp, p, cred, stuff); 4379 if (error) 4380 return (error); 4381 if (!nd->nd_repstat) 4382 error = nfsv4_loadattr(nd, vp, NULL, NULL, NULL, 0, NULL, 4383 NULL, NULL, NULL, aclp, 0, NULL, NULL, NULL, p, cred); 4384 else 4385 error = nd->nd_repstat; 4386 mbuf_freem(nd->nd_mrep); 4387 return (error); 4388 } 4389 4390 /* 4391 * nfs setacl call. 4392 */ 4393 APPLESTATIC int 4394 nfsrpc_setacl(vnode_t vp, struct ucred *cred, NFSPROC_T *p, 4395 struct acl *aclp, void *stuff) 4396 { 4397 int error; 4398 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 4399 4400 if (nfsrv_useacl == 0 || !NFSHASNFSV4(nmp)) 4401 return (EOPNOTSUPP); 4402 error = nfsrpc_setattr(vp, NULL, aclp, cred, p, NULL, NULL, stuff); 4403 return (error); 4404 } 4405 4406 /* 4407 * nfs setacl call. 4408 */ 4409 static int 4410 nfsrpc_setaclrpc(vnode_t vp, struct ucred *cred, NFSPROC_T *p, 4411 struct acl *aclp, nfsv4stateid_t *stateidp, void *stuff) 4412 { 4413 struct nfsrv_descript nfsd, *nd = &nfsd; 4414 int error; 4415 nfsattrbit_t attrbits; 4416 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 4417 4418 if (!NFSHASNFSV4(nmp)) 4419 return (EOPNOTSUPP); 4420 NFSCL_REQSTART(nd, NFSPROC_SETACL, vp); 4421 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID); 4422 NFSZERO_ATTRBIT(&attrbits); 4423 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_ACL); 4424 (void) nfsv4_fillattr(nd, vnode_mount(vp), vp, aclp, NULL, NULL, 0, 4425 &attrbits, NULL, NULL, 0, 0, 0, 0, (uint64_t)0); 4426 error = nfscl_request(nd, vp, p, cred, stuff); 4427 if (error) 4428 return (error); 4429 /* Don't care about the pre/postop attributes */ 4430 mbuf_freem(nd->nd_mrep); 4431 return (nd->nd_repstat); 4432 } 4433 4434 /* 4435 * Do the NFSv4.1 Exchange ID. 4436 */ 4437 int 4438 nfsrpc_exchangeid(struct nfsmount *nmp, struct nfsclclient *clp, 4439 struct nfssockreq *nrp, uint32_t exchflags, struct nfsclds **dspp, 4440 struct ucred *cred, NFSPROC_T *p) 4441 { 4442 uint32_t *tl, v41flags; 4443 struct nfsrv_descript nfsd; 4444 struct nfsrv_descript *nd = &nfsd; 4445 struct nfsclds *dsp; 4446 struct timespec verstime; 4447 int error, len; 4448 4449 *dspp = NULL; 4450 nfscl_reqstart(nd, NFSPROC_EXCHANGEID, nmp, NULL, 0, NULL, NULL); 4451 NFSM_BUILD(tl, uint32_t *, 2 * NFSX_UNSIGNED); 4452 *tl++ = txdr_unsigned(nfsboottime.tv_sec); /* Client owner */ 4453 *tl = txdr_unsigned(clp->nfsc_rev); 4454 (void) nfsm_strtom(nd, clp->nfsc_id, clp->nfsc_idlen); 4455 4456 NFSM_BUILD(tl, uint32_t *, 3 * NFSX_UNSIGNED); 4457 *tl++ = txdr_unsigned(exchflags); 4458 *tl++ = txdr_unsigned(NFSV4EXCH_SP4NONE); 4459 4460 /* Set the implementation id4 */ 4461 *tl = txdr_unsigned(1); 4462 (void) nfsm_strtom(nd, "freebsd.org", strlen("freebsd.org")); 4463 (void) nfsm_strtom(nd, version, strlen(version)); 4464 NFSM_BUILD(tl, uint32_t *, NFSX_V4TIME); 4465 verstime.tv_sec = 1293840000; /* Jan 1, 2011 */ 4466 verstime.tv_nsec = 0; 4467 txdr_nfsv4time(&verstime, tl); 4468 nd->nd_flag |= ND_USEGSSNAME; 4469 error = newnfs_request(nd, nmp, NULL, nrp, NULL, p, cred, 4470 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4471 NFSCL_DEBUG(1, "exchangeid err=%d reps=%d\n", error, 4472 (int)nd->nd_repstat); 4473 if (error != 0) 4474 return (error); 4475 if (nd->nd_repstat == 0) { 4476 NFSM_DISSECT(tl, uint32_t *, 6 * NFSX_UNSIGNED + NFSX_HYPER); 4477 len = fxdr_unsigned(int, *(tl + 7)); 4478 if (len < 0 || len > NFSV4_OPAQUELIMIT) { 4479 error = NFSERR_BADXDR; 4480 goto nfsmout; 4481 } 4482 dsp = malloc(sizeof(struct nfsclds) + len, M_NFSCLDS, 4483 M_WAITOK | M_ZERO); 4484 dsp->nfsclds_expire = NFSD_MONOSEC + clp->nfsc_renew; 4485 dsp->nfsclds_servownlen = len; 4486 dsp->nfsclds_sess.nfsess_clientid.lval[0] = *tl++; 4487 dsp->nfsclds_sess.nfsess_clientid.lval[1] = *tl++; 4488 dsp->nfsclds_sess.nfsess_sequenceid = 4489 fxdr_unsigned(uint32_t, *tl++); 4490 v41flags = fxdr_unsigned(uint32_t, *tl); 4491 if ((v41flags & NFSV4EXCH_USEPNFSMDS) != 0 && 4492 NFSHASPNFSOPT(nmp)) { 4493 NFSCL_DEBUG(1, "set PNFS\n"); 4494 NFSLOCKMNT(nmp); 4495 nmp->nm_state |= NFSSTA_PNFS; 4496 NFSUNLOCKMNT(nmp); 4497 dsp->nfsclds_flags |= NFSCLDS_MDS; 4498 } 4499 if ((v41flags & NFSV4EXCH_USEPNFSDS) != 0) 4500 dsp->nfsclds_flags |= NFSCLDS_DS; 4501 if (len > 0) 4502 nd->nd_repstat = nfsrv_mtostr(nd, 4503 dsp->nfsclds_serverown, len); 4504 if (nd->nd_repstat == 0) { 4505 mtx_init(&dsp->nfsclds_mtx, "nfsds", NULL, MTX_DEF); 4506 mtx_init(&dsp->nfsclds_sess.nfsess_mtx, "nfssession", 4507 NULL, MTX_DEF); 4508 nfscl_initsessionslots(&dsp->nfsclds_sess); 4509 *dspp = dsp; 4510 } else 4511 free(dsp, M_NFSCLDS); 4512 } 4513 error = nd->nd_repstat; 4514 nfsmout: 4515 mbuf_freem(nd->nd_mrep); 4516 return (error); 4517 } 4518 4519 /* 4520 * Do the NFSv4.1 Create Session. 4521 */ 4522 int 4523 nfsrpc_createsession(struct nfsmount *nmp, struct nfsclsession *sep, 4524 struct nfssockreq *nrp, uint32_t sequenceid, int mds, struct ucred *cred, 4525 NFSPROC_T *p) 4526 { 4527 uint32_t crflags, *tl; 4528 struct nfsrv_descript nfsd; 4529 struct nfsrv_descript *nd = &nfsd; 4530 int error, irdcnt; 4531 4532 nfscl_reqstart(nd, NFSPROC_CREATESESSION, nmp, NULL, 0, NULL, NULL); 4533 NFSM_BUILD(tl, uint32_t *, 4 * NFSX_UNSIGNED); 4534 *tl++ = sep->nfsess_clientid.lval[0]; 4535 *tl++ = sep->nfsess_clientid.lval[1]; 4536 *tl++ = txdr_unsigned(sequenceid); 4537 crflags = (NFSMNT_RDONLY(nmp->nm_mountp) ? 0 : NFSV4CRSESS_PERSIST); 4538 if (nfscl_enablecallb != 0 && nfs_numnfscbd > 0) 4539 crflags |= NFSV4CRSESS_CONNBACKCHAN; 4540 *tl = txdr_unsigned(crflags); 4541 4542 /* Fill in fore channel attributes. */ 4543 NFSM_BUILD(tl, uint32_t *, 7 * NFSX_UNSIGNED); 4544 *tl++ = 0; /* Header pad size */ 4545 *tl++ = txdr_unsigned(100000); /* Max request size */ 4546 *tl++ = txdr_unsigned(100000); /* Max response size */ 4547 *tl++ = txdr_unsigned(4096); /* Max response size cached */ 4548 *tl++ = txdr_unsigned(20); /* Max operations */ 4549 *tl++ = txdr_unsigned(64); /* Max slots */ 4550 *tl = 0; /* No rdma ird */ 4551 4552 /* Fill in back channel attributes. */ 4553 NFSM_BUILD(tl, uint32_t *, 7 * NFSX_UNSIGNED); 4554 *tl++ = 0; /* Header pad size */ 4555 *tl++ = txdr_unsigned(10000); /* Max request size */ 4556 *tl++ = txdr_unsigned(10000); /* Max response size */ 4557 *tl++ = txdr_unsigned(4096); /* Max response size cached */ 4558 *tl++ = txdr_unsigned(4); /* Max operations */ 4559 *tl++ = txdr_unsigned(NFSV4_CBSLOTS); /* Max slots */ 4560 *tl = 0; /* No rdma ird */ 4561 4562 NFSM_BUILD(tl, uint32_t *, 8 * NFSX_UNSIGNED); 4563 *tl++ = txdr_unsigned(NFS_CALLBCKPROG); /* Call back prog # */ 4564 4565 /* Allow AUTH_SYS callbacks as uid, gid == 0. */ 4566 *tl++ = txdr_unsigned(1); /* Auth_sys only */ 4567 *tl++ = txdr_unsigned(AUTH_SYS); /* AUTH_SYS type */ 4568 *tl++ = txdr_unsigned(nfsboottime.tv_sec); /* time stamp */ 4569 *tl++ = 0; /* Null machine name */ 4570 *tl++ = 0; /* Uid == 0 */ 4571 *tl++ = 0; /* Gid == 0 */ 4572 *tl = 0; /* No additional gids */ 4573 nd->nd_flag |= ND_USEGSSNAME; 4574 error = newnfs_request(nd, nmp, NULL, nrp, NULL, p, cred, NFS_PROG, 4575 NFS_VER4, NULL, 1, NULL, NULL); 4576 if (error != 0) 4577 return (error); 4578 if (nd->nd_repstat == 0) { 4579 NFSM_DISSECT(tl, uint32_t *, NFSX_V4SESSIONID + 4580 2 * NFSX_UNSIGNED); 4581 bcopy(tl, sep->nfsess_sessionid, NFSX_V4SESSIONID); 4582 tl += NFSX_V4SESSIONID / NFSX_UNSIGNED; 4583 sep->nfsess_sequenceid = fxdr_unsigned(uint32_t, *tl++); 4584 crflags = fxdr_unsigned(uint32_t, *tl); 4585 if ((crflags & NFSV4CRSESS_PERSIST) != 0 && mds != 0) { 4586 NFSLOCKMNT(nmp); 4587 nmp->nm_state |= NFSSTA_SESSPERSIST; 4588 NFSUNLOCKMNT(nmp); 4589 } 4590 4591 /* Get the fore channel slot count. */ 4592 NFSM_DISSECT(tl, uint32_t *, 7 * NFSX_UNSIGNED); 4593 tl += 3; /* Skip the other counts. */ 4594 sep->nfsess_maxcache = fxdr_unsigned(int, *tl++); 4595 tl++; 4596 sep->nfsess_foreslots = fxdr_unsigned(uint16_t, *tl++); 4597 NFSCL_DEBUG(4, "fore slots=%d\n", (int)sep->nfsess_foreslots); 4598 irdcnt = fxdr_unsigned(int, *tl); 4599 if (irdcnt > 0) 4600 NFSM_DISSECT(tl, uint32_t *, irdcnt * NFSX_UNSIGNED); 4601 4602 /* and the back channel slot count. */ 4603 NFSM_DISSECT(tl, uint32_t *, 7 * NFSX_UNSIGNED); 4604 tl += 5; 4605 sep->nfsess_backslots = fxdr_unsigned(uint16_t, *tl); 4606 NFSCL_DEBUG(4, "back slots=%d\n", (int)sep->nfsess_backslots); 4607 } 4608 error = nd->nd_repstat; 4609 nfsmout: 4610 mbuf_freem(nd->nd_mrep); 4611 return (error); 4612 } 4613 4614 /* 4615 * Do the NFSv4.1 Destroy Session. 4616 */ 4617 int 4618 nfsrpc_destroysession(struct nfsmount *nmp, struct nfsclclient *clp, 4619 struct ucred *cred, NFSPROC_T *p) 4620 { 4621 uint32_t *tl; 4622 struct nfsrv_descript nfsd; 4623 struct nfsrv_descript *nd = &nfsd; 4624 int error; 4625 4626 nfscl_reqstart(nd, NFSPROC_DESTROYSESSION, nmp, NULL, 0, NULL, NULL); 4627 NFSM_BUILD(tl, uint32_t *, NFSX_V4SESSIONID); 4628 bcopy(NFSMNT_MDSSESSION(nmp)->nfsess_sessionid, tl, NFSX_V4SESSIONID); 4629 nd->nd_flag |= ND_USEGSSNAME; 4630 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 4631 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4632 if (error != 0) 4633 return (error); 4634 error = nd->nd_repstat; 4635 mbuf_freem(nd->nd_mrep); 4636 return (error); 4637 } 4638 4639 /* 4640 * Do the NFSv4.1 Destroy Client. 4641 */ 4642 int 4643 nfsrpc_destroyclient(struct nfsmount *nmp, struct nfsclclient *clp, 4644 struct ucred *cred, NFSPROC_T *p) 4645 { 4646 uint32_t *tl; 4647 struct nfsrv_descript nfsd; 4648 struct nfsrv_descript *nd = &nfsd; 4649 int error; 4650 4651 nfscl_reqstart(nd, NFSPROC_DESTROYCLIENT, nmp, NULL, 0, NULL, NULL); 4652 NFSM_BUILD(tl, uint32_t *, 2 * NFSX_UNSIGNED); 4653 *tl++ = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[0]; 4654 *tl = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[1]; 4655 nd->nd_flag |= ND_USEGSSNAME; 4656 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 4657 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4658 if (error != 0) 4659 return (error); 4660 error = nd->nd_repstat; 4661 mbuf_freem(nd->nd_mrep); 4662 return (error); 4663 } 4664 4665 /* 4666 * Do the NFSv4.1 LayoutGet. 4667 */ 4668 int 4669 nfsrpc_layoutget(struct nfsmount *nmp, uint8_t *fhp, int fhlen, int iomode, 4670 uint64_t offset, uint64_t len, uint64_t minlen, int layoutlen, 4671 nfsv4stateid_t *stateidp, int *retonclosep, struct nfsclflayouthead *flhp, 4672 struct ucred *cred, NFSPROC_T *p, void *stuff) 4673 { 4674 uint32_t *tl; 4675 struct nfsrv_descript nfsd, *nd = &nfsd; 4676 struct nfsfh *nfhp; 4677 struct nfsclflayout *flp, *prevflp, *tflp; 4678 int cnt, error, gotiomode, fhcnt, nfhlen, i, j; 4679 uint8_t *cp; 4680 uint64_t retlen; 4681 4682 flp = NULL; 4683 gotiomode = -1; 4684 nfscl_reqstart(nd, NFSPROC_LAYOUTGET, nmp, fhp, fhlen, NULL, NULL); 4685 NFSM_BUILD(tl, uint32_t *, 4 * NFSX_UNSIGNED + 3 * NFSX_HYPER + 4686 NFSX_STATEID); 4687 *tl++ = newnfs_false; /* Don't signal availability. */ 4688 *tl++ = txdr_unsigned(NFSLAYOUT_NFSV4_1_FILES); 4689 *tl++ = txdr_unsigned(iomode); 4690 txdr_hyper(offset, tl); 4691 tl += 2; 4692 txdr_hyper(len, tl); 4693 tl += 2; 4694 txdr_hyper(minlen, tl); 4695 tl += 2; 4696 *tl++ = txdr_unsigned(stateidp->seqid); 4697 NFSCL_DEBUG(4, "layget seq=%d\n", (int)stateidp->seqid); 4698 *tl++ = stateidp->other[0]; 4699 *tl++ = stateidp->other[1]; 4700 *tl++ = stateidp->other[2]; 4701 *tl = txdr_unsigned(layoutlen); 4702 nd->nd_flag |= ND_USEGSSNAME; 4703 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 4704 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4705 if (error != 0) 4706 return (error); 4707 if (nd->nd_repstat == 0) { 4708 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED + NFSX_STATEID); 4709 if (*tl++ != 0) 4710 *retonclosep = 1; 4711 else 4712 *retonclosep = 0; 4713 stateidp->seqid = fxdr_unsigned(uint32_t, *tl++); 4714 NFSCL_DEBUG(4, "retoncls=%d stseq=%d\n", *retonclosep, 4715 (int)stateidp->seqid); 4716 stateidp->other[0] = *tl++; 4717 stateidp->other[1] = *tl++; 4718 stateidp->other[2] = *tl++; 4719 cnt = fxdr_unsigned(int, *tl); 4720 NFSCL_DEBUG(4, "layg cnt=%d\n", cnt); 4721 if (cnt <= 0 || cnt > 10000) { 4722 /* Don't accept more than 10000 layouts in reply. */ 4723 error = NFSERR_BADXDR; 4724 goto nfsmout; 4725 } 4726 for (i = 0; i < cnt; i++) { 4727 /* Dissect all the way to the file handle cnt. */ 4728 NFSM_DISSECT(tl, uint32_t *, 3 * NFSX_HYPER + 4729 6 * NFSX_UNSIGNED + NFSX_V4DEVICEID); 4730 fhcnt = fxdr_unsigned(int, *(tl + 11 + 4731 NFSX_V4DEVICEID / NFSX_UNSIGNED)); 4732 NFSCL_DEBUG(4, "fhcnt=%d\n", fhcnt); 4733 if (fhcnt < 0 || fhcnt > 100) { 4734 /* Don't accept more than 100 file handles. */ 4735 error = NFSERR_BADXDR; 4736 goto nfsmout; 4737 } 4738 if (fhcnt > 1) 4739 flp = malloc(sizeof(*flp) + (fhcnt - 1) * 4740 sizeof(struct nfsfh *), 4741 M_NFSFLAYOUT, M_WAITOK); 4742 else 4743 flp = malloc(sizeof(*flp), 4744 M_NFSFLAYOUT, M_WAITOK); 4745 flp->nfsfl_flags = 0; 4746 flp->nfsfl_fhcnt = 0; 4747 flp->nfsfl_devp = NULL; 4748 flp->nfsfl_off = fxdr_hyper(tl); tl += 2; 4749 retlen = fxdr_hyper(tl); tl += 2; 4750 if (flp->nfsfl_off + retlen < flp->nfsfl_off) 4751 flp->nfsfl_end = UINT64_MAX - flp->nfsfl_off; 4752 else 4753 flp->nfsfl_end = flp->nfsfl_off + retlen; 4754 flp->nfsfl_iomode = fxdr_unsigned(int, *tl++); 4755 if (gotiomode == -1) 4756 gotiomode = flp->nfsfl_iomode; 4757 NFSCL_DEBUG(4, "layg reqiom=%d retiom=%d\n", iomode, 4758 (int)flp->nfsfl_iomode); 4759 if (fxdr_unsigned(int, *tl++) != 4760 NFSLAYOUT_NFSV4_1_FILES) { 4761 printf("NFSv4.1: got non-files layout\n"); 4762 error = NFSERR_BADXDR; 4763 goto nfsmout; 4764 } 4765 NFSBCOPY(++tl, flp->nfsfl_dev, NFSX_V4DEVICEID); 4766 tl += (NFSX_V4DEVICEID / NFSX_UNSIGNED); 4767 flp->nfsfl_util = fxdr_unsigned(uint32_t, *tl++); 4768 NFSCL_DEBUG(4, "flutil=0x%x\n", flp->nfsfl_util); 4769 flp->nfsfl_stripe1 = fxdr_unsigned(uint32_t, *tl++); 4770 flp->nfsfl_patoff = fxdr_hyper(tl); tl += 2; 4771 if (fxdr_unsigned(int, *tl) != fhcnt) { 4772 printf("EEK! bad fhcnt\n"); 4773 error = NFSERR_BADXDR; 4774 goto nfsmout; 4775 } 4776 for (j = 0; j < fhcnt; j++) { 4777 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 4778 nfhlen = fxdr_unsigned(int, *tl); 4779 if (nfhlen <= 0 || nfhlen > NFSX_V4FHMAX) { 4780 error = NFSERR_BADXDR; 4781 goto nfsmout; 4782 } 4783 nfhp = malloc(sizeof(*nfhp) + nfhlen - 1, 4784 M_NFSFH, M_WAITOK); 4785 flp->nfsfl_fh[j] = nfhp; 4786 flp->nfsfl_fhcnt++; 4787 nfhp->nfh_len = nfhlen; 4788 NFSM_DISSECT(cp, uint8_t *, NFSM_RNDUP(nfhlen)); 4789 NFSBCOPY(cp, nfhp->nfh_fh, nfhlen); 4790 } 4791 if (flp->nfsfl_iomode == gotiomode) { 4792 /* Keep the list in increasing offset order. */ 4793 tflp = LIST_FIRST(flhp); 4794 prevflp = NULL; 4795 while (tflp != NULL && 4796 tflp->nfsfl_off < flp->nfsfl_off) { 4797 prevflp = tflp; 4798 tflp = LIST_NEXT(tflp, nfsfl_list); 4799 } 4800 if (prevflp == NULL) 4801 LIST_INSERT_HEAD(flhp, flp, nfsfl_list); 4802 else 4803 LIST_INSERT_AFTER(prevflp, flp, 4804 nfsfl_list); 4805 } else { 4806 printf("nfscl_layoutget(): got wrong iomode\n"); 4807 nfscl_freeflayout(flp); 4808 } 4809 flp = NULL; 4810 } 4811 } 4812 if (nd->nd_repstat != 0 && error == 0) 4813 error = nd->nd_repstat; 4814 nfsmout: 4815 if (error != 0 && flp != NULL) 4816 nfscl_freeflayout(flp); 4817 mbuf_freem(nd->nd_mrep); 4818 return (error); 4819 } 4820 4821 /* 4822 * Do the NFSv4.1 Get Device Info. 4823 */ 4824 int 4825 nfsrpc_getdeviceinfo(struct nfsmount *nmp, uint8_t *deviceid, int layouttype, 4826 uint32_t *notifybitsp, struct nfscldevinfo **ndip, struct ucred *cred, 4827 NFSPROC_T *p) 4828 { 4829 uint32_t cnt, *tl; 4830 struct nfsrv_descript nfsd; 4831 struct nfsrv_descript *nd = &nfsd; 4832 struct sockaddr_storage ss; 4833 struct nfsclds *dsp = NULL, **dspp; 4834 struct nfscldevinfo *ndi; 4835 int addrcnt, bitcnt, error, i, isudp, j, pos, safilled, stripecnt; 4836 uint8_t stripeindex; 4837 4838 *ndip = NULL; 4839 ndi = NULL; 4840 nfscl_reqstart(nd, NFSPROC_GETDEVICEINFO, nmp, NULL, 0, NULL, NULL); 4841 NFSM_BUILD(tl, uint32_t *, NFSX_V4DEVICEID + 3 * NFSX_UNSIGNED); 4842 NFSBCOPY(deviceid, tl, NFSX_V4DEVICEID); 4843 tl += (NFSX_V4DEVICEID / NFSX_UNSIGNED); 4844 *tl++ = txdr_unsigned(layouttype); 4845 *tl++ = txdr_unsigned(100000); 4846 if (notifybitsp != NULL && *notifybitsp != 0) { 4847 *tl = txdr_unsigned(1); /* One word of bits. */ 4848 NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED); 4849 *tl = txdr_unsigned(*notifybitsp); 4850 } else 4851 *tl = txdr_unsigned(0); 4852 nd->nd_flag |= ND_USEGSSNAME; 4853 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 4854 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4855 if (error != 0) 4856 return (error); 4857 if (nd->nd_repstat == 0) { 4858 NFSM_DISSECT(tl, uint32_t *, 3 * NFSX_UNSIGNED); 4859 if (layouttype != fxdr_unsigned(int, *tl++)) 4860 printf("EEK! devinfo layout type not same!\n"); 4861 stripecnt = fxdr_unsigned(int, *++tl); 4862 NFSCL_DEBUG(4, "stripecnt=%d\n", stripecnt); 4863 if (stripecnt < 1 || stripecnt > 4096) { 4864 printf("NFS devinfo stripecnt %d: out of range\n", 4865 stripecnt); 4866 error = NFSERR_BADXDR; 4867 goto nfsmout; 4868 } 4869 NFSM_DISSECT(tl, uint32_t *, (stripecnt + 1) * NFSX_UNSIGNED); 4870 addrcnt = fxdr_unsigned(int, *(tl + stripecnt)); 4871 NFSCL_DEBUG(4, "addrcnt=%d\n", addrcnt); 4872 if (addrcnt < 1 || addrcnt > 128) { 4873 printf("NFS devinfo addrcnt %d: out of range\n", 4874 addrcnt); 4875 error = NFSERR_BADXDR; 4876 goto nfsmout; 4877 } 4878 4879 /* 4880 * Now we know how many stripe indices and addresses, so 4881 * we can allocate the structure the correct size. 4882 */ 4883 i = (stripecnt * sizeof(uint8_t)) / sizeof(struct nfsclds *) 4884 + 1; 4885 NFSCL_DEBUG(4, "stripeindices=%d\n", i); 4886 ndi = malloc(sizeof(*ndi) + (addrcnt + i) * 4887 sizeof(struct nfsclds *), M_NFSDEVINFO, M_WAITOK | M_ZERO); 4888 NFSBCOPY(deviceid, ndi->nfsdi_deviceid, NFSX_V4DEVICEID); 4889 ndi->nfsdi_refcnt = 0; 4890 ndi->nfsdi_stripecnt = stripecnt; 4891 ndi->nfsdi_addrcnt = addrcnt; 4892 /* Fill in the stripe indices. */ 4893 for (i = 0; i < stripecnt; i++) { 4894 stripeindex = fxdr_unsigned(uint8_t, *tl++); 4895 NFSCL_DEBUG(4, "stripeind=%d\n", stripeindex); 4896 if (stripeindex >= addrcnt) { 4897 printf("NFS devinfo stripeindex %d: too big\n", 4898 (int)stripeindex); 4899 error = NFSERR_BADXDR; 4900 goto nfsmout; 4901 } 4902 nfsfldi_setstripeindex(ndi, i, stripeindex); 4903 } 4904 4905 /* Now, dissect the server address(es). */ 4906 safilled = 0; 4907 for (i = 0; i < addrcnt; i++) { 4908 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 4909 cnt = fxdr_unsigned(uint32_t, *tl); 4910 if (cnt == 0) { 4911 printf("NFS devinfo 0 len addrlist\n"); 4912 error = NFSERR_BADXDR; 4913 goto nfsmout; 4914 } 4915 dspp = nfsfldi_addr(ndi, i); 4916 pos = arc4random() % cnt; /* Choose one. */ 4917 safilled = 0; 4918 for (j = 0; j < cnt; j++) { 4919 error = nfsv4_getipaddr(nd, &ss, &isudp); 4920 if (error != 0 && error != EPERM) { 4921 error = NFSERR_BADXDR; 4922 goto nfsmout; 4923 } 4924 if (error == 0 && isudp == 0) { 4925 /* 4926 * The algorithm is: 4927 * - use "pos" entry if it is of the 4928 * same af_family or none of them 4929 * is of the same af_family 4930 * else 4931 * - use the first one of the same 4932 * af_family. 4933 */ 4934 if ((safilled == 0 && ss.ss_family == 4935 nmp->nm_nam->sa_family) || 4936 (j == pos && 4937 (safilled == 0 || ss.ss_family == 4938 nmp->nm_nam->sa_family)) || 4939 (safilled == 1 && ss.ss_family == 4940 nmp->nm_nam->sa_family)) { 4941 error = nfsrpc_fillsa(nmp, &ss, 4942 &dsp, p); 4943 if (error == 0) { 4944 *dspp = dsp; 4945 if (ss.ss_family == 4946 nmp->nm_nam->sa_family) 4947 safilled = 2; 4948 else 4949 safilled = 1; 4950 } 4951 } 4952 } 4953 } 4954 if (safilled == 0) 4955 break; 4956 } 4957 4958 /* And the notify bits. */ 4959 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 4960 if (safilled != 0) { 4961 bitcnt = fxdr_unsigned(int, *tl); 4962 if (bitcnt > 0) { 4963 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 4964 if (notifybitsp != NULL) 4965 *notifybitsp = 4966 fxdr_unsigned(uint32_t, *tl); 4967 } 4968 *ndip = ndi; 4969 } else 4970 error = EPERM; 4971 } 4972 if (nd->nd_repstat != 0) 4973 error = nd->nd_repstat; 4974 nfsmout: 4975 if (error != 0 && ndi != NULL) 4976 nfscl_freedevinfo(ndi); 4977 mbuf_freem(nd->nd_mrep); 4978 return (error); 4979 } 4980 4981 /* 4982 * Do the NFSv4.1 LayoutCommit. 4983 */ 4984 int 4985 nfsrpc_layoutcommit(struct nfsmount *nmp, uint8_t *fh, int fhlen, int reclaim, 4986 uint64_t off, uint64_t len, uint64_t lastbyte, nfsv4stateid_t *stateidp, 4987 int layouttype, int layoutupdatecnt, uint8_t *layp, struct ucred *cred, 4988 NFSPROC_T *p, void *stuff) 4989 { 4990 uint32_t *tl; 4991 struct nfsrv_descript nfsd, *nd = &nfsd; 4992 int error, outcnt, i; 4993 uint8_t *cp; 4994 4995 nfscl_reqstart(nd, NFSPROC_LAYOUTCOMMIT, nmp, fh, fhlen, NULL, NULL); 4996 NFSM_BUILD(tl, uint32_t *, 5 * NFSX_UNSIGNED + 3 * NFSX_HYPER + 4997 NFSX_STATEID); 4998 txdr_hyper(off, tl); 4999 tl += 2; 5000 txdr_hyper(len, tl); 5001 tl += 2; 5002 if (reclaim != 0) 5003 *tl++ = newnfs_true; 5004 else 5005 *tl++ = newnfs_false; 5006 *tl++ = txdr_unsigned(stateidp->seqid); 5007 *tl++ = stateidp->other[0]; 5008 *tl++ = stateidp->other[1]; 5009 *tl++ = stateidp->other[2]; 5010 *tl++ = newnfs_true; 5011 if (lastbyte < off) 5012 lastbyte = off; 5013 else if (lastbyte >= (off + len)) 5014 lastbyte = off + len - 1; 5015 txdr_hyper(lastbyte, tl); 5016 tl += 2; 5017 *tl++ = newnfs_false; 5018 *tl++ = txdr_unsigned(layouttype); 5019 *tl = txdr_unsigned(layoutupdatecnt); 5020 if (layoutupdatecnt > 0) { 5021 KASSERT(layouttype != NFSLAYOUT_NFSV4_1_FILES, 5022 ("Must be nil for Files Layout")); 5023 outcnt = NFSM_RNDUP(layoutupdatecnt); 5024 NFSM_BUILD(cp, uint8_t *, outcnt); 5025 NFSBCOPY(layp, cp, layoutupdatecnt); 5026 cp += layoutupdatecnt; 5027 for (i = 0; i < (outcnt - layoutupdatecnt); i++) 5028 *cp++ = 0x0; 5029 } 5030 nd->nd_flag |= ND_USEGSSNAME; 5031 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 5032 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 5033 if (error != 0) 5034 return (error); 5035 error = nd->nd_repstat; 5036 mbuf_freem(nd->nd_mrep); 5037 return (error); 5038 } 5039 5040 /* 5041 * Do the NFSv4.1 LayoutReturn. 5042 */ 5043 int 5044 nfsrpc_layoutreturn(struct nfsmount *nmp, uint8_t *fh, int fhlen, int reclaim, 5045 int layouttype, uint32_t iomode, int layoutreturn, uint64_t offset, 5046 uint64_t len, nfsv4stateid_t *stateidp, int layoutcnt, uint32_t *layp, 5047 struct ucred *cred, NFSPROC_T *p, void *stuff) 5048 { 5049 uint32_t *tl; 5050 struct nfsrv_descript nfsd, *nd = &nfsd; 5051 int error, outcnt, i; 5052 uint8_t *cp; 5053 5054 nfscl_reqstart(nd, NFSPROC_LAYOUTRETURN, nmp, fh, fhlen, NULL, NULL); 5055 NFSM_BUILD(tl, uint32_t *, 4 * NFSX_UNSIGNED); 5056 if (reclaim != 0) 5057 *tl++ = newnfs_true; 5058 else 5059 *tl++ = newnfs_false; 5060 *tl++ = txdr_unsigned(layouttype); 5061 *tl++ = txdr_unsigned(iomode); 5062 *tl = txdr_unsigned(layoutreturn); 5063 if (layoutreturn == NFSLAYOUTRETURN_FILE) { 5064 NFSM_BUILD(tl, uint32_t *, 2 * NFSX_HYPER + NFSX_STATEID + 5065 NFSX_UNSIGNED); 5066 txdr_hyper(offset, tl); 5067 tl += 2; 5068 txdr_hyper(len, tl); 5069 tl += 2; 5070 NFSCL_DEBUG(4, "layoutret stseq=%d\n", (int)stateidp->seqid); 5071 *tl++ = txdr_unsigned(stateidp->seqid); 5072 *tl++ = stateidp->other[0]; 5073 *tl++ = stateidp->other[1]; 5074 *tl++ = stateidp->other[2]; 5075 *tl = txdr_unsigned(layoutcnt); 5076 if (layoutcnt > 0) { 5077 outcnt = NFSM_RNDUP(layoutcnt); 5078 NFSM_BUILD(cp, uint8_t *, outcnt); 5079 NFSBCOPY(layp, cp, layoutcnt); 5080 cp += layoutcnt; 5081 for (i = 0; i < (outcnt - layoutcnt); i++) 5082 *cp++ = 0x0; 5083 } 5084 } 5085 nd->nd_flag |= ND_USEGSSNAME; 5086 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 5087 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 5088 if (error != 0) 5089 return (error); 5090 if (nd->nd_repstat == 0) { 5091 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 5092 if (*tl != 0) { 5093 NFSM_DISSECT(tl, uint32_t *, NFSX_STATEID); 5094 stateidp->seqid = fxdr_unsigned(uint32_t, *tl++); 5095 stateidp->other[0] = *tl++; 5096 stateidp->other[1] = *tl++; 5097 stateidp->other[2] = *tl; 5098 } 5099 } else 5100 error = nd->nd_repstat; 5101 nfsmout: 5102 mbuf_freem(nd->nd_mrep); 5103 return (error); 5104 } 5105 5106 /* 5107 * Acquire a layout and devinfo, if possible. The caller must have acquired 5108 * a reference count on the nfsclclient structure before calling this. 5109 * Return the layout in lypp with a reference count on it, if successful. 5110 */ 5111 static int 5112 nfsrpc_getlayout(struct nfsmount *nmp, vnode_t vp, struct nfsfh *nfhp, 5113 int iomode, uint32_t *notifybitsp, nfsv4stateid_t *stateidp, uint64_t off, 5114 struct nfscllayout **lypp, struct ucred *cred, NFSPROC_T *p) 5115 { 5116 struct nfscllayout *lyp; 5117 struct nfsclflayout *flp, *tflp; 5118 struct nfscldevinfo *dip; 5119 struct nfsclflayouthead flh; 5120 int error = 0, islocked, layoutlen, recalled, retonclose; 5121 nfsv4stateid_t stateid; 5122 5123 *lypp = NULL; 5124 /* 5125 * If lyp is returned non-NULL, there will be a refcnt (shared lock) 5126 * on it, iff flp != NULL or a lock (exclusive lock) on it iff 5127 * flp == NULL. 5128 */ 5129 lyp = nfscl_getlayout(nmp->nm_clp, nfhp->nfh_fh, nfhp->nfh_len, 5130 off, &flp, &recalled); 5131 islocked = 0; 5132 if (lyp == NULL || flp == NULL) { 5133 if (recalled != 0) 5134 return (EIO); 5135 LIST_INIT(&flh); 5136 layoutlen = NFSMNT_MDSSESSION(nmp)->nfsess_maxcache - 5137 (NFSX_STATEID + 3 * NFSX_UNSIGNED); 5138 if (lyp == NULL) { 5139 stateid.seqid = 0; 5140 stateid.other[0] = stateidp->other[0]; 5141 stateid.other[1] = stateidp->other[1]; 5142 stateid.other[2] = stateidp->other[2]; 5143 error = nfsrpc_layoutget(nmp, nfhp->nfh_fh, 5144 nfhp->nfh_len, iomode, (uint64_t)0, INT64_MAX, 5145 (uint64_t)0, layoutlen, &stateid, &retonclose, 5146 &flh, cred, p, NULL); 5147 } else { 5148 islocked = 1; 5149 stateid.seqid = lyp->nfsly_stateid.seqid; 5150 stateid.other[0] = lyp->nfsly_stateid.other[0]; 5151 stateid.other[1] = lyp->nfsly_stateid.other[1]; 5152 stateid.other[2] = lyp->nfsly_stateid.other[2]; 5153 error = nfsrpc_layoutget(nmp, nfhp->nfh_fh, 5154 nfhp->nfh_len, iomode, off, INT64_MAX, 5155 (uint64_t)0, layoutlen, &stateid, &retonclose, 5156 &flh, cred, p, NULL); 5157 } 5158 if (error == 0) 5159 LIST_FOREACH(tflp, &flh, nfsfl_list) { 5160 error = nfscl_adddevinfo(nmp, NULL, tflp); 5161 if (error != 0) { 5162 error = nfsrpc_getdeviceinfo(nmp, 5163 tflp->nfsfl_dev, 5164 NFSLAYOUT_NFSV4_1_FILES, 5165 notifybitsp, &dip, cred, p); 5166 if (error != 0) 5167 break; 5168 error = nfscl_adddevinfo(nmp, dip, 5169 tflp); 5170 if (error != 0) 5171 printf( 5172 "getlayout: cannot add\n"); 5173 } 5174 } 5175 if (error == 0) { 5176 /* 5177 * nfscl_layout() always returns with the nfsly_lock 5178 * set to a refcnt (shared lock). 5179 */ 5180 error = nfscl_layout(nmp, vp, nfhp->nfh_fh, 5181 nfhp->nfh_len, &stateid, retonclose, &flh, &lyp, 5182 cred, p); 5183 if (error == 0) 5184 *lypp = lyp; 5185 } else if (islocked != 0) 5186 nfsv4_unlock(&lyp->nfsly_lock, 0); 5187 } else 5188 *lypp = lyp; 5189 return (error); 5190 } 5191 5192 /* 5193 * Do a TCP connection plus exchange id and create session. 5194 * If successful, a "struct nfsclds" is linked into the list for the 5195 * mount point and a pointer to it is returned. 5196 */ 5197 static int 5198 nfsrpc_fillsa(struct nfsmount *nmp, struct sockaddr_storage *ssp, 5199 struct nfsclds **dspp, NFSPROC_T *p) 5200 { 5201 struct sockaddr_in *msad, *sad, *ssd; 5202 struct sockaddr_in6 *msad6, *sad6, *ssd6; 5203 struct nfsclclient *clp; 5204 struct nfssockreq *nrp; 5205 struct nfsclds *dsp, *tdsp; 5206 int error; 5207 enum nfsclds_state retv; 5208 uint32_t sequenceid; 5209 5210 KASSERT(nmp->nm_sockreq.nr_cred != NULL, 5211 ("nfsrpc_fillsa: NULL nr_cred")); 5212 NFSLOCKCLSTATE(); 5213 clp = nmp->nm_clp; 5214 NFSUNLOCKCLSTATE(); 5215 if (clp == NULL) 5216 return (EPERM); 5217 if (ssp->ss_family == AF_INET) { 5218 ssd = (struct sockaddr_in *)ssp; 5219 NFSLOCKMNT(nmp); 5220 5221 /* 5222 * Check to see if we already have a session for this 5223 * address that is usable for a DS. 5224 * Note that the MDS's address is in a different place 5225 * than the sessions already acquired for DS's. 5226 */ 5227 msad = (struct sockaddr_in *)nmp->nm_sockreq.nr_nam; 5228 tdsp = TAILQ_FIRST(&nmp->nm_sess); 5229 while (tdsp != NULL) { 5230 if (msad != NULL && msad->sin_family == AF_INET && 5231 ssd->sin_addr.s_addr == msad->sin_addr.s_addr && 5232 ssd->sin_port == msad->sin_port && 5233 (tdsp->nfsclds_flags & NFSCLDS_DS) != 0) { 5234 *dspp = tdsp; 5235 NFSUNLOCKMNT(nmp); 5236 NFSCL_DEBUG(4, "fnd same addr\n"); 5237 return (0); 5238 } 5239 tdsp = TAILQ_NEXT(tdsp, nfsclds_list); 5240 if (tdsp != NULL && tdsp->nfsclds_sockp != NULL) 5241 msad = (struct sockaddr_in *) 5242 tdsp->nfsclds_sockp->nr_nam; 5243 else 5244 msad = NULL; 5245 } 5246 NFSUNLOCKMNT(nmp); 5247 5248 /* No IP address match, so look for new/trunked one. */ 5249 sad = malloc(sizeof(*sad), M_SONAME, M_WAITOK | M_ZERO); 5250 sad->sin_len = sizeof(*sad); 5251 sad->sin_family = AF_INET; 5252 sad->sin_port = ssd->sin_port; 5253 sad->sin_addr.s_addr = ssd->sin_addr.s_addr; 5254 nrp = malloc(sizeof(*nrp), M_NFSSOCKREQ, M_WAITOK | M_ZERO); 5255 nrp->nr_nam = (struct sockaddr *)sad; 5256 } else if (ssp->ss_family == AF_INET6) { 5257 ssd6 = (struct sockaddr_in6 *)ssp; 5258 NFSLOCKMNT(nmp); 5259 5260 /* 5261 * Check to see if we already have a session for this 5262 * address that is usable for a DS. 5263 * Note that the MDS's address is in a different place 5264 * than the sessions already acquired for DS's. 5265 */ 5266 msad6 = (struct sockaddr_in6 *)nmp->nm_sockreq.nr_nam; 5267 tdsp = TAILQ_FIRST(&nmp->nm_sess); 5268 while (tdsp != NULL) { 5269 if (msad6 != NULL && msad6->sin6_family == AF_INET6 && 5270 IN6_ARE_ADDR_EQUAL(&ssd6->sin6_addr, 5271 &msad6->sin6_addr) && 5272 ssd6->sin6_port == msad6->sin6_port && 5273 (tdsp->nfsclds_flags & NFSCLDS_DS) != 0) { 5274 *dspp = tdsp; 5275 NFSUNLOCKMNT(nmp); 5276 return (0); 5277 } 5278 tdsp = TAILQ_NEXT(tdsp, nfsclds_list); 5279 if (tdsp != NULL && tdsp->nfsclds_sockp != NULL) 5280 msad6 = (struct sockaddr_in6 *) 5281 tdsp->nfsclds_sockp->nr_nam; 5282 else 5283 msad6 = NULL; 5284 } 5285 NFSUNLOCKMNT(nmp); 5286 5287 /* No IP address match, so look for new/trunked one. */ 5288 sad6 = malloc(sizeof(*sad6), M_SONAME, M_WAITOK | M_ZERO); 5289 sad6->sin6_len = sizeof(*sad6); 5290 sad6->sin6_family = AF_INET6; 5291 sad6->sin6_port = ssd6->sin6_port; 5292 NFSBCOPY(&ssd6->sin6_addr, &sad6->sin6_addr, 5293 sizeof(struct in6_addr)); 5294 nrp = malloc(sizeof(*nrp), M_NFSSOCKREQ, M_WAITOK | M_ZERO); 5295 nrp->nr_nam = (struct sockaddr *)sad6; 5296 } else 5297 return (EPERM); 5298 5299 nrp->nr_sotype = SOCK_STREAM; 5300 mtx_init(&nrp->nr_mtx, "nfssock", NULL, MTX_DEF); 5301 nrp->nr_prog = NFS_PROG; 5302 nrp->nr_vers = NFS_VER4; 5303 5304 /* 5305 * Use the credentials that were used for the mount, which are 5306 * in nmp->nm_sockreq.nr_cred for newnfs_connect() etc. 5307 * Ref. counting the credentials with crhold() is probably not 5308 * necessary, since nm_sockreq.nr_cred won't be crfree()'d until 5309 * unmount, but I did it anyhow. 5310 */ 5311 nrp->nr_cred = crhold(nmp->nm_sockreq.nr_cred); 5312 error = newnfs_connect(nmp, nrp, NULL, p, 0); 5313 NFSCL_DEBUG(3, "DS connect=%d\n", error); 5314 5315 /* Now, do the exchangeid and create session. */ 5316 if (error == 0) 5317 error = nfsrpc_exchangeid(nmp, clp, nrp, NFSV4EXCH_USEPNFSDS, 5318 &dsp, nrp->nr_cred, p); 5319 NFSCL_DEBUG(3, "DS exchangeid=%d\n", error); 5320 if (error == 0) { 5321 dsp->nfsclds_sockp = nrp; 5322 NFSLOCKMNT(nmp); 5323 retv = nfscl_getsameserver(nmp, dsp, &tdsp); 5324 NFSCL_DEBUG(3, "getsame ret=%d\n", retv); 5325 if (retv == NFSDSP_USETHISSESSION) { 5326 NFSUNLOCKMNT(nmp); 5327 /* 5328 * If there is already a session for this server, 5329 * use it. 5330 */ 5331 (void)newnfs_disconnect(nrp); 5332 nfscl_freenfsclds(dsp); 5333 *dspp = tdsp; 5334 return (0); 5335 } 5336 if (retv == NFSDSP_SEQTHISSESSION) 5337 sequenceid = tdsp->nfsclds_sess.nfsess_sequenceid; 5338 else 5339 sequenceid = dsp->nfsclds_sess.nfsess_sequenceid; 5340 NFSUNLOCKMNT(nmp); 5341 error = nfsrpc_createsession(nmp, &dsp->nfsclds_sess, 5342 nrp, sequenceid, 0, nrp->nr_cred, p); 5343 NFSCL_DEBUG(3, "DS createsess=%d\n", error); 5344 } else { 5345 NFSFREECRED(nrp->nr_cred); 5346 NFSFREEMUTEX(&nrp->nr_mtx); 5347 free(nrp->nr_nam, M_SONAME); 5348 free(nrp, M_NFSSOCKREQ); 5349 } 5350 if (error == 0) { 5351 NFSCL_DEBUG(3, "add DS session\n"); 5352 /* 5353 * Put it at the end of the list. That way the list 5354 * is ordered by when the entry was added. This matters 5355 * since the one done first is the one that should be 5356 * used for sequencid'ing any subsequent create sessions. 5357 */ 5358 NFSLOCKMNT(nmp); 5359 TAILQ_INSERT_TAIL(&nmp->nm_sess, dsp, nfsclds_list); 5360 NFSUNLOCKMNT(nmp); 5361 *dspp = dsp; 5362 } else if (dsp != NULL) 5363 nfscl_freenfsclds(dsp); 5364 return (error); 5365 } 5366 5367 /* 5368 * Do the NFSv4.1 Reclaim Complete. 5369 */ 5370 int 5371 nfsrpc_reclaimcomplete(struct nfsmount *nmp, struct ucred *cred, NFSPROC_T *p) 5372 { 5373 uint32_t *tl; 5374 struct nfsrv_descript nfsd; 5375 struct nfsrv_descript *nd = &nfsd; 5376 int error; 5377 5378 nfscl_reqstart(nd, NFSPROC_RECLAIMCOMPL, nmp, NULL, 0, NULL, NULL); 5379 NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED); 5380 *tl = newnfs_false; 5381 nd->nd_flag |= ND_USEGSSNAME; 5382 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 5383 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 5384 if (error != 0) 5385 return (error); 5386 error = nd->nd_repstat; 5387 mbuf_freem(nd->nd_mrep); 5388 return (error); 5389 } 5390 5391 /* 5392 * Initialize the slot tables for a session. 5393 */ 5394 static void 5395 nfscl_initsessionslots(struct nfsclsession *sep) 5396 { 5397 int i; 5398 5399 for (i = 0; i < NFSV4_CBSLOTS; i++) { 5400 if (sep->nfsess_cbslots[i].nfssl_reply != NULL) 5401 m_freem(sep->nfsess_cbslots[i].nfssl_reply); 5402 NFSBZERO(&sep->nfsess_cbslots[i], sizeof(struct nfsslot)); 5403 } 5404 for (i = 0; i < 64; i++) 5405 sep->nfsess_slotseq[i] = 0; 5406 sep->nfsess_slots = 0; 5407 } 5408 5409 /* 5410 * Called to try and do an I/O operation via an NFSv4.1 Data Server (DS). 5411 */ 5412 int 5413 nfscl_doiods(vnode_t vp, struct uio *uiop, int *iomode, int *must_commit, 5414 uint32_t rwaccess, struct ucred *cred, NFSPROC_T *p) 5415 { 5416 struct nfsnode *np = VTONFS(vp); 5417 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 5418 struct nfscllayout *layp; 5419 struct nfscldevinfo *dip; 5420 struct nfsclflayout *rflp; 5421 nfsv4stateid_t stateid; 5422 struct ucred *newcred; 5423 uint64_t lastbyte, len, off, oresid, xfer; 5424 int eof, error, iolaymode, recalled; 5425 void *lckp; 5426 5427 if (!NFSHASPNFS(nmp) || nfscl_enablecallb == 0 || nfs_numnfscbd == 0 || 5428 (np->n_flag & NNOLAYOUT) != 0) 5429 return (EIO); 5430 /* Now, get a reference cnt on the clientid for this mount. */ 5431 if (nfscl_getref(nmp) == 0) 5432 return (EIO); 5433 5434 /* Find an appropriate stateid. */ 5435 newcred = NFSNEWCRED(cred); 5436 error = nfscl_getstateid(vp, np->n_fhp->nfh_fh, np->n_fhp->nfh_len, 5437 rwaccess, 1, newcred, p, &stateid, &lckp); 5438 if (error != 0) { 5439 NFSFREECRED(newcred); 5440 nfscl_relref(nmp); 5441 return (error); 5442 } 5443 /* Search for a layout for this file. */ 5444 off = uiop->uio_offset; 5445 layp = nfscl_getlayout(nmp->nm_clp, np->n_fhp->nfh_fh, 5446 np->n_fhp->nfh_len, off, &rflp, &recalled); 5447 if (layp == NULL || rflp == NULL) { 5448 if (recalled != 0) { 5449 NFSFREECRED(newcred); 5450 nfscl_relref(nmp); 5451 return (EIO); 5452 } 5453 if (layp != NULL) { 5454 nfscl_rellayout(layp, (rflp == NULL) ? 1 : 0); 5455 layp = NULL; 5456 } 5457 /* Try and get a Layout, if it is supported. */ 5458 if (rwaccess == NFSV4OPEN_ACCESSWRITE || 5459 (np->n_flag & NWRITEOPENED) != 0) 5460 iolaymode = NFSLAYOUTIOMODE_RW; 5461 else 5462 iolaymode = NFSLAYOUTIOMODE_READ; 5463 error = nfsrpc_getlayout(nmp, vp, np->n_fhp, iolaymode, 5464 NULL, &stateid, off, &layp, newcred, p); 5465 if (error != 0) { 5466 NFSLOCKNODE(np); 5467 np->n_flag |= NNOLAYOUT; 5468 NFSUNLOCKNODE(np); 5469 if (lckp != NULL) 5470 nfscl_lockderef(lckp); 5471 NFSFREECRED(newcred); 5472 if (layp != NULL) 5473 nfscl_rellayout(layp, 0); 5474 nfscl_relref(nmp); 5475 return (error); 5476 } 5477 } 5478 5479 /* 5480 * Loop around finding a layout that works for the first part of 5481 * this I/O operation, and then call the function that actually 5482 * does the RPC. 5483 */ 5484 eof = 0; 5485 len = (uint64_t)uiop->uio_resid; 5486 while (len > 0 && error == 0 && eof == 0) { 5487 off = uiop->uio_offset; 5488 error = nfscl_findlayoutforio(layp, off, rwaccess, &rflp); 5489 if (error == 0) { 5490 oresid = xfer = (uint64_t)uiop->uio_resid; 5491 if (xfer > (rflp->nfsfl_end - rflp->nfsfl_off)) 5492 xfer = rflp->nfsfl_end - rflp->nfsfl_off; 5493 dip = nfscl_getdevinfo(nmp->nm_clp, rflp->nfsfl_dev, 5494 rflp->nfsfl_devp); 5495 if (dip != NULL) { 5496 error = nfscl_doflayoutio(vp, uiop, iomode, 5497 must_commit, &eof, &stateid, rwaccess, dip, 5498 layp, rflp, off, xfer, newcred, p); 5499 nfscl_reldevinfo(dip); 5500 lastbyte = off + xfer - 1; 5501 if (error == 0) { 5502 NFSLOCKCLSTATE(); 5503 if (lastbyte > layp->nfsly_lastbyte) 5504 layp->nfsly_lastbyte = lastbyte; 5505 NFSUNLOCKCLSTATE(); 5506 } 5507 } else 5508 error = EIO; 5509 if (error == 0) 5510 len -= (oresid - (uint64_t)uiop->uio_resid); 5511 } 5512 } 5513 if (lckp != NULL) 5514 nfscl_lockderef(lckp); 5515 NFSFREECRED(newcred); 5516 nfscl_rellayout(layp, 0); 5517 nfscl_relref(nmp); 5518 return (error); 5519 } 5520 5521 /* 5522 * Find a file layout that will handle the first bytes of the requested 5523 * range and return the information from it needed to to the I/O operation. 5524 */ 5525 int 5526 nfscl_findlayoutforio(struct nfscllayout *lyp, uint64_t off, uint32_t rwaccess, 5527 struct nfsclflayout **retflpp) 5528 { 5529 struct nfsclflayout *flp, *nflp, *rflp; 5530 uint32_t rw; 5531 5532 rflp = NULL; 5533 rw = rwaccess; 5534 /* For reading, do the Read list first and then the Write list. */ 5535 do { 5536 if (rw == NFSV4OPEN_ACCESSREAD) 5537 flp = LIST_FIRST(&lyp->nfsly_flayread); 5538 else 5539 flp = LIST_FIRST(&lyp->nfsly_flayrw); 5540 while (flp != NULL) { 5541 nflp = LIST_NEXT(flp, nfsfl_list); 5542 if (flp->nfsfl_off > off) 5543 break; 5544 if (flp->nfsfl_end > off && 5545 (rflp == NULL || rflp->nfsfl_end < flp->nfsfl_end)) 5546 rflp = flp; 5547 flp = nflp; 5548 } 5549 if (rw == NFSV4OPEN_ACCESSREAD) 5550 rw = NFSV4OPEN_ACCESSWRITE; 5551 else 5552 rw = 0; 5553 } while (rw != 0); 5554 if (rflp != NULL) { 5555 /* This one covers the most bytes starting at off. */ 5556 *retflpp = rflp; 5557 return (0); 5558 } 5559 return (EIO); 5560 } 5561 5562 /* 5563 * Do I/O using an NFSv4.1 file layout. 5564 */ 5565 static int 5566 nfscl_doflayoutio(vnode_t vp, struct uio *uiop, int *iomode, int *must_commit, 5567 int *eofp, nfsv4stateid_t *stateidp, int rwflag, struct nfscldevinfo *dp, 5568 struct nfscllayout *lyp, struct nfsclflayout *flp, uint64_t off, 5569 uint64_t len, struct ucred *cred, NFSPROC_T *p) 5570 { 5571 uint64_t io_off, rel_off, stripe_unit_size, transfer, xfer; 5572 int commit_thru_mds, error = 0, stripe_index, stripe_pos; 5573 struct nfsnode *np; 5574 struct nfsfh *fhp; 5575 struct nfsclds **dspp; 5576 5577 np = VTONFS(vp); 5578 rel_off = off - flp->nfsfl_patoff; 5579 stripe_unit_size = (flp->nfsfl_util >> 6) & 0x3ffffff; 5580 stripe_pos = (rel_off / stripe_unit_size + flp->nfsfl_stripe1) % 5581 dp->nfsdi_stripecnt; 5582 transfer = stripe_unit_size - (rel_off % stripe_unit_size); 5583 5584 /* Loop around, doing I/O for each stripe unit. */ 5585 while (len > 0 && error == 0) { 5586 stripe_index = nfsfldi_stripeindex(dp, stripe_pos); 5587 dspp = nfsfldi_addr(dp, stripe_index); 5588 if (len > transfer) 5589 xfer = transfer; 5590 else 5591 xfer = len; 5592 if ((flp->nfsfl_util & NFSFLAYUTIL_DENSE) != 0) { 5593 /* Dense layout. */ 5594 if (stripe_pos >= flp->nfsfl_fhcnt) 5595 return (EIO); 5596 fhp = flp->nfsfl_fh[stripe_pos]; 5597 io_off = (rel_off / (stripe_unit_size * 5598 dp->nfsdi_stripecnt)) * stripe_unit_size + 5599 rel_off % stripe_unit_size; 5600 } else { 5601 /* Sparse layout. */ 5602 if (flp->nfsfl_fhcnt > 1) { 5603 if (stripe_index >= flp->nfsfl_fhcnt) 5604 return (EIO); 5605 fhp = flp->nfsfl_fh[stripe_index]; 5606 } else if (flp->nfsfl_fhcnt == 1) 5607 fhp = flp->nfsfl_fh[0]; 5608 else 5609 fhp = np->n_fhp; 5610 io_off = off; 5611 } 5612 if ((flp->nfsfl_util & NFSFLAYUTIL_COMMIT_THRU_MDS) != 0) 5613 commit_thru_mds = 1; 5614 else 5615 commit_thru_mds = 0; 5616 if (rwflag == FREAD) 5617 error = nfsrpc_readds(vp, uiop, stateidp, eofp, *dspp, 5618 io_off, xfer, fhp, cred, p); 5619 else { 5620 error = nfsrpc_writeds(vp, uiop, iomode, must_commit, 5621 stateidp, *dspp, io_off, xfer, fhp, commit_thru_mds, 5622 cred, p); 5623 if (error == 0) { 5624 NFSLOCKCLSTATE(); 5625 lyp->nfsly_flags |= NFSLY_WRITTEN; 5626 NFSUNLOCKCLSTATE(); 5627 } 5628 } 5629 if (error == 0) { 5630 transfer = stripe_unit_size; 5631 stripe_pos = (stripe_pos + 1) % dp->nfsdi_stripecnt; 5632 len -= xfer; 5633 off += xfer; 5634 } 5635 } 5636 return (error); 5637 } 5638 5639 /* 5640 * The actual read RPC done to a DS. 5641 */ 5642 static int 5643 nfsrpc_readds(vnode_t vp, struct uio *uiop, nfsv4stateid_t *stateidp, int *eofp, 5644 struct nfsclds *dsp, uint64_t io_off, int len, struct nfsfh *fhp, 5645 struct ucred *cred, NFSPROC_T *p) 5646 { 5647 uint32_t *tl; 5648 int error, retlen; 5649 struct nfsrv_descript nfsd; 5650 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 5651 struct nfsrv_descript *nd = &nfsd; 5652 struct nfssockreq *nrp; 5653 5654 nd->nd_mrep = NULL; 5655 nfscl_reqstart(nd, NFSPROC_READDS, nmp, fhp->nfh_fh, fhp->nfh_len, 5656 NULL, &dsp->nfsclds_sess); 5657 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSEQIDZERO); 5658 NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED * 3); 5659 txdr_hyper(io_off, tl); 5660 *(tl + 2) = txdr_unsigned(len); 5661 nrp = dsp->nfsclds_sockp; 5662 if (nrp == NULL) 5663 /* If NULL, use the MDS socket. */ 5664 nrp = &nmp->nm_sockreq; 5665 error = newnfs_request(nd, nmp, NULL, nrp, vp, p, cred, 5666 NFS_PROG, NFS_VER4, NULL, 1, NULL, &dsp->nfsclds_sess); 5667 if (error != 0) 5668 return (error); 5669 if (nd->nd_repstat != 0) { 5670 error = nd->nd_repstat; 5671 goto nfsmout; 5672 } 5673 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 5674 *eofp = fxdr_unsigned(int, *tl); 5675 NFSM_STRSIZ(retlen, len); 5676 error = nfsm_mbufuio(nd, uiop, retlen); 5677 nfsmout: 5678 if (nd->nd_mrep != NULL) 5679 mbuf_freem(nd->nd_mrep); 5680 return (error); 5681 } 5682 5683 /* 5684 * The actual write RPC done to a DS. 5685 */ 5686 static int 5687 nfsrpc_writeds(vnode_t vp, struct uio *uiop, int *iomode, int *must_commit, 5688 nfsv4stateid_t *stateidp, struct nfsclds *dsp, uint64_t io_off, int len, 5689 struct nfsfh *fhp, int commit_thru_mds, struct ucred *cred, NFSPROC_T *p) 5690 { 5691 uint32_t *tl; 5692 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 5693 int error, rlen, commit, committed = NFSWRITE_FILESYNC; 5694 int32_t backup; 5695 struct nfsrv_descript nfsd; 5696 struct nfsrv_descript *nd = &nfsd; 5697 struct nfssockreq *nrp; 5698 5699 KASSERT(uiop->uio_iovcnt == 1, ("nfs: writerpc iovcnt > 1")); 5700 nd->nd_mrep = NULL; 5701 nfscl_reqstart(nd, NFSPROC_WRITEDS, nmp, fhp->nfh_fh, fhp->nfh_len, 5702 NULL, &dsp->nfsclds_sess); 5703 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSEQIDZERO); 5704 NFSM_BUILD(tl, uint32_t *, NFSX_HYPER + 2 * NFSX_UNSIGNED); 5705 txdr_hyper(io_off, tl); 5706 tl += 2; 5707 *tl++ = txdr_unsigned(*iomode); 5708 *tl = txdr_unsigned(len); 5709 nfsm_uiombuf(nd, uiop, len); 5710 nrp = dsp->nfsclds_sockp; 5711 if (nrp == NULL) 5712 /* If NULL, use the MDS socket. */ 5713 nrp = &nmp->nm_sockreq; 5714 error = newnfs_request(nd, nmp, NULL, nrp, vp, p, cred, 5715 NFS_PROG, NFS_VER4, NULL, 1, NULL, &dsp->nfsclds_sess); 5716 if (error != 0) 5717 return (error); 5718 if (nd->nd_repstat != 0) { 5719 /* 5720 * In case the rpc gets retried, roll 5721 * the uio fileds changed by nfsm_uiombuf() 5722 * back. 5723 */ 5724 uiop->uio_offset -= len; 5725 uio_uio_resid_add(uiop, len); 5726 uio_iov_base_add(uiop, -len); 5727 uio_iov_len_add(uiop, len); 5728 error = nd->nd_repstat; 5729 } else { 5730 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED + NFSX_VERF); 5731 rlen = fxdr_unsigned(int, *tl++); 5732 if (rlen == 0) { 5733 error = NFSERR_IO; 5734 goto nfsmout; 5735 } else if (rlen < len) { 5736 backup = len - rlen; 5737 uio_iov_base_add(uiop, -(backup)); 5738 uio_iov_len_add(uiop, backup); 5739 uiop->uio_offset -= backup; 5740 uio_uio_resid_add(uiop, backup); 5741 len = rlen; 5742 } 5743 commit = fxdr_unsigned(int, *tl++); 5744 5745 /* 5746 * Return the lowest committment level 5747 * obtained by any of the RPCs. 5748 */ 5749 if (committed == NFSWRITE_FILESYNC) 5750 committed = commit; 5751 else if (committed == NFSWRITE_DATASYNC && 5752 commit == NFSWRITE_UNSTABLE) 5753 committed = commit; 5754 if (commit_thru_mds != 0) { 5755 NFSLOCKMNT(nmp); 5756 if (!NFSHASWRITEVERF(nmp)) { 5757 NFSBCOPY(tl, nmp->nm_verf, NFSX_VERF); 5758 NFSSETWRITEVERF(nmp); 5759 } else if (NFSBCMP(tl, nmp->nm_verf, NFSX_VERF)) { 5760 *must_commit = 1; 5761 NFSBCOPY(tl, nmp->nm_verf, NFSX_VERF); 5762 } 5763 NFSUNLOCKMNT(nmp); 5764 } else { 5765 NFSLOCKDS(dsp); 5766 if ((dsp->nfsclds_flags & NFSCLDS_HASWRITEVERF) == 0) { 5767 NFSBCOPY(tl, dsp->nfsclds_verf, NFSX_VERF); 5768 dsp->nfsclds_flags |= NFSCLDS_HASWRITEVERF; 5769 } else if (NFSBCMP(tl, dsp->nfsclds_verf, NFSX_VERF)) { 5770 *must_commit = 1; 5771 NFSBCOPY(tl, dsp->nfsclds_verf, NFSX_VERF); 5772 } 5773 NFSUNLOCKDS(dsp); 5774 } 5775 } 5776 nfsmout: 5777 if (nd->nd_mrep != NULL) 5778 mbuf_freem(nd->nd_mrep); 5779 *iomode = committed; 5780 if (nd->nd_repstat != 0 && error == 0) 5781 error = nd->nd_repstat; 5782 return (error); 5783 } 5784 5785 /* 5786 * Free up the nfsclds structure. 5787 */ 5788 void 5789 nfscl_freenfsclds(struct nfsclds *dsp) 5790 { 5791 int i; 5792 5793 if (dsp == NULL) 5794 return; 5795 if (dsp->nfsclds_sockp != NULL) { 5796 NFSFREECRED(dsp->nfsclds_sockp->nr_cred); 5797 NFSFREEMUTEX(&dsp->nfsclds_sockp->nr_mtx); 5798 free(dsp->nfsclds_sockp->nr_nam, M_SONAME); 5799 free(dsp->nfsclds_sockp, M_NFSSOCKREQ); 5800 } 5801 NFSFREEMUTEX(&dsp->nfsclds_mtx); 5802 NFSFREEMUTEX(&dsp->nfsclds_sess.nfsess_mtx); 5803 for (i = 0; i < NFSV4_CBSLOTS; i++) { 5804 if (dsp->nfsclds_sess.nfsess_cbslots[i].nfssl_reply != NULL) 5805 m_freem( 5806 dsp->nfsclds_sess.nfsess_cbslots[i].nfssl_reply); 5807 } 5808 free(dsp, M_NFSCLDS); 5809 } 5810 5811 static enum nfsclds_state 5812 nfscl_getsameserver(struct nfsmount *nmp, struct nfsclds *newdsp, 5813 struct nfsclds **retdspp) 5814 { 5815 struct nfsclds *dsp, *cur_dsp; 5816 5817 /* 5818 * Search the list of nfsclds structures for one with the same 5819 * server. 5820 */ 5821 cur_dsp = NULL; 5822 TAILQ_FOREACH(dsp, &nmp->nm_sess, nfsclds_list) { 5823 if (dsp->nfsclds_servownlen == newdsp->nfsclds_servownlen && 5824 dsp->nfsclds_servownlen != 0 && 5825 !NFSBCMP(dsp->nfsclds_serverown, newdsp->nfsclds_serverown, 5826 dsp->nfsclds_servownlen)) { 5827 NFSCL_DEBUG(4, "fnd same fdsp=%p dsp=%p flg=0x%x\n", 5828 TAILQ_FIRST(&nmp->nm_sess), dsp, 5829 dsp->nfsclds_flags); 5830 /* Server major id matches. */ 5831 if ((dsp->nfsclds_flags & NFSCLDS_DS) != 0) { 5832 *retdspp = dsp; 5833 return (NFSDSP_USETHISSESSION); 5834 } 5835 5836 /* 5837 * Note the first match, so it can be used for 5838 * sequence'ing new sessions. 5839 */ 5840 if (cur_dsp == NULL) 5841 cur_dsp = dsp; 5842 } 5843 } 5844 if (cur_dsp != NULL) { 5845 *retdspp = cur_dsp; 5846 return (NFSDSP_SEQTHISSESSION); 5847 } 5848 return (NFSDSP_NOTFOUND); 5849 } 5850 5851 #ifdef notyet 5852 /* 5853 * NFS commit rpc to a DS. 5854 */ 5855 static int 5856 nfsrpc_commitds(vnode_t vp, uint64_t offset, int cnt, struct nfsclds *dsp, 5857 struct nfsfh *fhp, struct ucred *cred, NFSPROC_T *p, void *stuff) 5858 { 5859 uint32_t *tl; 5860 struct nfsrv_descript nfsd, *nd = &nfsd; 5861 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 5862 struct nfssockreq *nrp; 5863 int error; 5864 5865 nfscl_reqstart(nd, NFSPROC_COMMITDS, nmp, fhp->nfh_fh, fhp->nfh_len, 5866 NULL, &dsp->nfsclds_sess); 5867 NFSM_BUILD(tl, uint32_t *, NFSX_HYPER + NFSX_UNSIGNED); 5868 txdr_hyper(offset, tl); 5869 tl += 2; 5870 *tl = txdr_unsigned(cnt); 5871 nrp = dsp->nfsclds_sockp; 5872 if (nrp == NULL) 5873 /* If NULL, use the MDS socket. */ 5874 nrp = &nmp->nm_sockreq; 5875 error = newnfs_request(nd, nmp, NULL, nrp, vp, p, cred, 5876 NFS_PROG, NFS_VER4, NULL, 1, NULL, &dsp->nfsclds_sess); 5877 if (error) 5878 return (error); 5879 if (nd->nd_repstat == 0) { 5880 NFSM_DISSECT(tl, u_int32_t *, NFSX_VERF); 5881 NFSLOCKDS(dsp); 5882 if (NFSBCMP(tl, dsp->nfsclds_verf, NFSX_VERF)) { 5883 NFSBCOPY(tl, dsp->nfsclds_verf, NFSX_VERF); 5884 error = NFSERR_STALEWRITEVERF; 5885 } 5886 NFSUNLOCKDS(dsp); 5887 } 5888 nfsmout: 5889 if (error == 0 && nd->nd_repstat != 0) 5890 error = nd->nd_repstat; 5891 mbuf_freem(nd->nd_mrep); 5892 return (error); 5893 } 5894 #endif 5895 5896