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 struct nfsclsession *tsep; 388 389 dp = *dpp; 390 *dpp = NULL; 391 nfscl_reqstart(nd, NFSPROC_OPEN, nmp, nfhp, fhlen, NULL, NULL); 392 NFSM_BUILD(tl, u_int32_t *, 5 * NFSX_UNSIGNED); 393 *tl++ = txdr_unsigned(op->nfso_own->nfsow_seqid); 394 *tl++ = txdr_unsigned(mode & NFSV4OPEN_ACCESSBOTH); 395 *tl++ = txdr_unsigned((mode >> NFSLCK_SHIFT) & NFSV4OPEN_DENYBOTH); 396 tsep = nfsmnt_mdssession(nmp); 397 *tl++ = tsep->nfsess_clientid.lval[0]; 398 *tl = tsep->nfsess_clientid.lval[1]; 399 (void) nfsm_strtom(nd, op->nfso_own->nfsow_owner, NFSV4CL_LOCKNAMELEN); 400 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 401 *tl++ = txdr_unsigned(NFSV4OPEN_NOCREATE); 402 if (reclaim) { 403 *tl = txdr_unsigned(NFSV4OPEN_CLAIMPREVIOUS); 404 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 405 *tl = txdr_unsigned(delegtype); 406 } else { 407 if (dp != NULL) { 408 *tl = txdr_unsigned(NFSV4OPEN_CLAIMDELEGATECUR); 409 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID); 410 if (NFSHASNFSV4N(nmp)) 411 *tl++ = 0; 412 else 413 *tl++ = dp->nfsdl_stateid.seqid; 414 *tl++ = dp->nfsdl_stateid.other[0]; 415 *tl++ = dp->nfsdl_stateid.other[1]; 416 *tl = dp->nfsdl_stateid.other[2]; 417 } else { 418 *tl = txdr_unsigned(NFSV4OPEN_CLAIMNULL); 419 } 420 (void) nfsm_strtom(nd, name, namelen); 421 } 422 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 423 *tl = txdr_unsigned(NFSV4OP_GETATTR); 424 NFSZERO_ATTRBIT(&attrbits); 425 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_CHANGE); 426 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_TIMEMODIFY); 427 (void) nfsrv_putattrbit(nd, &attrbits); 428 if (syscred) 429 nd->nd_flag |= ND_USEGSSNAME; 430 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, vp, p, cred, 431 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 432 if (error) 433 return (error); 434 NFSCL_INCRSEQID(op->nfso_own->nfsow_seqid, nd); 435 if (!nd->nd_repstat) { 436 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID + 437 6 * NFSX_UNSIGNED); 438 op->nfso_stateid.seqid = *tl++; 439 op->nfso_stateid.other[0] = *tl++; 440 op->nfso_stateid.other[1] = *tl++; 441 op->nfso_stateid.other[2] = *tl; 442 rflags = fxdr_unsigned(u_int32_t, *(tl + 6)); 443 error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL); 444 if (error) 445 goto nfsmout; 446 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 447 deleg = fxdr_unsigned(u_int32_t, *tl); 448 if (deleg == NFSV4OPEN_DELEGATEREAD || 449 deleg == NFSV4OPEN_DELEGATEWRITE) { 450 if (!(op->nfso_own->nfsow_clp->nfsc_flags & 451 NFSCLFLAGS_FIRSTDELEG)) 452 op->nfso_own->nfsow_clp->nfsc_flags |= 453 (NFSCLFLAGS_FIRSTDELEG | NFSCLFLAGS_GOTDELEG); 454 MALLOC(ndp, struct nfscldeleg *, 455 sizeof (struct nfscldeleg) + newfhlen, 456 M_NFSCLDELEG, M_WAITOK); 457 LIST_INIT(&ndp->nfsdl_owner); 458 LIST_INIT(&ndp->nfsdl_lock); 459 ndp->nfsdl_clp = op->nfso_own->nfsow_clp; 460 ndp->nfsdl_fhlen = newfhlen; 461 NFSBCOPY(newfhp, ndp->nfsdl_fh, newfhlen); 462 newnfs_copyincred(cred, &ndp->nfsdl_cred); 463 nfscl_lockinit(&ndp->nfsdl_rwlock); 464 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID + 465 NFSX_UNSIGNED); 466 ndp->nfsdl_stateid.seqid = *tl++; 467 ndp->nfsdl_stateid.other[0] = *tl++; 468 ndp->nfsdl_stateid.other[1] = *tl++; 469 ndp->nfsdl_stateid.other[2] = *tl++; 470 ret = fxdr_unsigned(int, *tl); 471 if (deleg == NFSV4OPEN_DELEGATEWRITE) { 472 ndp->nfsdl_flags = NFSCLDL_WRITE; 473 /* 474 * Indicates how much the file can grow. 475 */ 476 NFSM_DISSECT(tl, u_int32_t *, 477 3 * NFSX_UNSIGNED); 478 limitby = fxdr_unsigned(int, *tl++); 479 switch (limitby) { 480 case NFSV4OPEN_LIMITSIZE: 481 ndp->nfsdl_sizelimit = fxdr_hyper(tl); 482 break; 483 case NFSV4OPEN_LIMITBLOCKS: 484 ndp->nfsdl_sizelimit = 485 fxdr_unsigned(u_int64_t, *tl++); 486 ndp->nfsdl_sizelimit *= 487 fxdr_unsigned(u_int64_t, *tl); 488 break; 489 default: 490 error = NFSERR_BADXDR; 491 goto nfsmout; 492 } 493 } else { 494 ndp->nfsdl_flags = NFSCLDL_READ; 495 } 496 if (ret) 497 ndp->nfsdl_flags |= NFSCLDL_RECALL; 498 error = nfsrv_dissectace(nd, &ndp->nfsdl_ace, &ret, 499 &acesize, p); 500 if (error) 501 goto nfsmout; 502 } else if (deleg != NFSV4OPEN_DELEGATENONE) { 503 error = NFSERR_BADXDR; 504 goto nfsmout; 505 } 506 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 507 error = nfsv4_loadattr(nd, NULL, &nfsva, NULL, 508 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0, 509 NULL, NULL, NULL, p, cred); 510 if (error) 511 goto nfsmout; 512 if (ndp != NULL) { 513 ndp->nfsdl_change = nfsva.na_filerev; 514 ndp->nfsdl_modtime = nfsva.na_mtime; 515 ndp->nfsdl_flags |= NFSCLDL_MODTIMESET; 516 } 517 if (!reclaim && (rflags & NFSV4OPEN_RESULTCONFIRM)) { 518 do { 519 ret = nfsrpc_openconfirm(vp, newfhp, newfhlen, op, 520 cred, p); 521 if (ret == NFSERR_DELAY) 522 (void) nfs_catnap(PZERO, ret, "nfs_open"); 523 } while (ret == NFSERR_DELAY); 524 error = ret; 525 } 526 if ((rflags & NFSV4OPEN_LOCKTYPEPOSIX) || 527 nfscl_assumeposixlocks) 528 op->nfso_posixlock = 1; 529 else 530 op->nfso_posixlock = 0; 531 532 /* 533 * If the server is handing out delegations, but we didn't 534 * get one because an OpenConfirm was required, try the 535 * Open again, to get a delegation. This is a harmless no-op, 536 * from a server's point of view. 537 */ 538 if (!reclaim && (rflags & NFSV4OPEN_RESULTCONFIRM) && 539 (op->nfso_own->nfsow_clp->nfsc_flags & NFSCLFLAGS_GOTDELEG) 540 && !error && dp == NULL && ndp == NULL && !recursed) { 541 do { 542 ret = nfsrpc_openrpc(nmp, vp, nfhp, fhlen, newfhp, 543 newfhlen, mode, op, name, namelen, &ndp, 0, 0x0, 544 cred, p, syscred, 1); 545 if (ret == NFSERR_DELAY) 546 (void) nfs_catnap(PZERO, ret, "nfs_open2"); 547 } while (ret == NFSERR_DELAY); 548 if (ret) { 549 if (ndp != NULL) { 550 FREE((caddr_t)ndp, M_NFSCLDELEG); 551 ndp = NULL; 552 } 553 if (ret == NFSERR_STALECLIENTID || 554 ret == NFSERR_STALEDONTRECOVER || 555 ret == NFSERR_BADSESSION) 556 error = ret; 557 } 558 } 559 } 560 if (nd->nd_repstat != 0 && error == 0) 561 error = nd->nd_repstat; 562 if (error == NFSERR_STALECLIENTID) 563 nfscl_initiate_recovery(op->nfso_own->nfsow_clp); 564 nfsmout: 565 if (!error) 566 *dpp = ndp; 567 else if (ndp != NULL) 568 FREE((caddr_t)ndp, M_NFSCLDELEG); 569 mbuf_freem(nd->nd_mrep); 570 return (error); 571 } 572 573 /* 574 * open downgrade rpc 575 */ 576 APPLESTATIC int 577 nfsrpc_opendowngrade(vnode_t vp, u_int32_t mode, struct nfsclopen *op, 578 struct ucred *cred, NFSPROC_T *p) 579 { 580 u_int32_t *tl; 581 struct nfsrv_descript nfsd, *nd = &nfsd; 582 int error; 583 584 NFSCL_REQSTART(nd, NFSPROC_OPENDOWNGRADE, vp); 585 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID + 3 * NFSX_UNSIGNED); 586 if (NFSHASNFSV4N(VFSTONFS(vnode_mount(vp)))) 587 *tl++ = 0; 588 else 589 *tl++ = op->nfso_stateid.seqid; 590 *tl++ = op->nfso_stateid.other[0]; 591 *tl++ = op->nfso_stateid.other[1]; 592 *tl++ = op->nfso_stateid.other[2]; 593 *tl++ = txdr_unsigned(op->nfso_own->nfsow_seqid); 594 *tl++ = txdr_unsigned(mode & NFSV4OPEN_ACCESSBOTH); 595 *tl = txdr_unsigned((mode >> NFSLCK_SHIFT) & NFSV4OPEN_DENYBOTH); 596 error = nfscl_request(nd, vp, p, cred, NULL); 597 if (error) 598 return (error); 599 NFSCL_INCRSEQID(op->nfso_own->nfsow_seqid, nd); 600 if (!nd->nd_repstat) { 601 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID); 602 op->nfso_stateid.seqid = *tl++; 603 op->nfso_stateid.other[0] = *tl++; 604 op->nfso_stateid.other[1] = *tl++; 605 op->nfso_stateid.other[2] = *tl; 606 } 607 if (nd->nd_repstat && error == 0) 608 error = nd->nd_repstat; 609 if (error == NFSERR_STALESTATEID) 610 nfscl_initiate_recovery(op->nfso_own->nfsow_clp); 611 nfsmout: 612 mbuf_freem(nd->nd_mrep); 613 return (error); 614 } 615 616 /* 617 * V4 Close operation. 618 */ 619 APPLESTATIC int 620 nfsrpc_close(vnode_t vp, int doclose, NFSPROC_T *p) 621 { 622 struct nfsclclient *clp; 623 int error; 624 625 if (vnode_vtype(vp) != VREG) 626 return (0); 627 if (doclose) 628 error = nfscl_doclose(vp, &clp, p); 629 else 630 error = nfscl_getclose(vp, &clp); 631 if (error) 632 return (error); 633 634 nfscl_clientrelease(clp); 635 return (0); 636 } 637 638 /* 639 * Close the open. 640 */ 641 APPLESTATIC void 642 nfsrpc_doclose(struct nfsmount *nmp, struct nfsclopen *op, NFSPROC_T *p) 643 { 644 struct nfsrv_descript nfsd, *nd = &nfsd; 645 struct nfscllockowner *lp, *nlp; 646 struct nfscllock *lop, *nlop; 647 struct ucred *tcred; 648 u_int64_t off = 0, len = 0; 649 u_int32_t type = NFSV4LOCKT_READ; 650 int error, do_unlock, trycnt; 651 652 tcred = newnfs_getcred(); 653 newnfs_copycred(&op->nfso_cred, tcred); 654 /* 655 * (Theoretically this could be done in the same 656 * compound as the close, but having multiple 657 * sequenced Ops in the same compound might be 658 * too scary for some servers.) 659 */ 660 if (op->nfso_posixlock) { 661 off = 0; 662 len = NFS64BITSSET; 663 type = NFSV4LOCKT_READ; 664 } 665 666 /* 667 * Since this function is only called from VOP_INACTIVE(), no 668 * other thread will be manipulating this Open. As such, the 669 * lock lists are not being changed by other threads, so it should 670 * be safe to do this without locking. 671 */ 672 LIST_FOREACH(lp, &op->nfso_lock, nfsl_list) { 673 do_unlock = 1; 674 LIST_FOREACH_SAFE(lop, &lp->nfsl_lock, nfslo_list, nlop) { 675 if (op->nfso_posixlock == 0) { 676 off = lop->nfslo_first; 677 len = lop->nfslo_end - lop->nfslo_first; 678 if (lop->nfslo_type == F_WRLCK) 679 type = NFSV4LOCKT_WRITE; 680 else 681 type = NFSV4LOCKT_READ; 682 } 683 if (do_unlock) { 684 trycnt = 0; 685 do { 686 error = nfsrpc_locku(nd, nmp, lp, off, 687 len, type, tcred, p, 0); 688 if ((nd->nd_repstat == NFSERR_GRACE || 689 nd->nd_repstat == NFSERR_DELAY) && 690 error == 0) 691 (void) nfs_catnap(PZERO, 692 (int)nd->nd_repstat, 693 "nfs_close"); 694 } while ((nd->nd_repstat == NFSERR_GRACE || 695 nd->nd_repstat == NFSERR_DELAY) && 696 error == 0 && trycnt++ < 5); 697 if (op->nfso_posixlock) 698 do_unlock = 0; 699 } 700 nfscl_freelock(lop, 0); 701 } 702 /* 703 * Do a ReleaseLockOwner. 704 * The lock owner name nfsl_owner may be used by other opens for 705 * other files but the lock_owner4 name that nfsrpc_rellockown() 706 * puts on the wire has the file handle for this file appended 707 * to it, so it can be done now. 708 */ 709 (void)nfsrpc_rellockown(nmp, lp, lp->nfsl_open->nfso_fh, 710 lp->nfsl_open->nfso_fhlen, tcred, p); 711 } 712 713 /* 714 * There could be other Opens for different files on the same 715 * OpenOwner, so locking is required. 716 */ 717 NFSLOCKCLSTATE(); 718 nfscl_lockexcl(&op->nfso_own->nfsow_rwlock, NFSCLSTATEMUTEXPTR); 719 NFSUNLOCKCLSTATE(); 720 do { 721 error = nfscl_tryclose(op, tcred, nmp, p); 722 if (error == NFSERR_GRACE) 723 (void) nfs_catnap(PZERO, error, "nfs_close"); 724 } while (error == NFSERR_GRACE); 725 NFSLOCKCLSTATE(); 726 nfscl_lockunlock(&op->nfso_own->nfsow_rwlock); 727 728 LIST_FOREACH_SAFE(lp, &op->nfso_lock, nfsl_list, nlp) 729 nfscl_freelockowner(lp, 0); 730 nfscl_freeopen(op, 0); 731 NFSUNLOCKCLSTATE(); 732 NFSFREECRED(tcred); 733 } 734 735 /* 736 * The actual Close RPC. 737 */ 738 APPLESTATIC int 739 nfsrpc_closerpc(struct nfsrv_descript *nd, struct nfsmount *nmp, 740 struct nfsclopen *op, struct ucred *cred, NFSPROC_T *p, 741 int syscred) 742 { 743 u_int32_t *tl; 744 int error; 745 746 nfscl_reqstart(nd, NFSPROC_CLOSE, nmp, op->nfso_fh, 747 op->nfso_fhlen, NULL, NULL); 748 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED + NFSX_STATEID); 749 *tl++ = txdr_unsigned(op->nfso_own->nfsow_seqid); 750 if (NFSHASNFSV4N(nmp)) 751 *tl++ = 0; 752 else 753 *tl++ = op->nfso_stateid.seqid; 754 *tl++ = op->nfso_stateid.other[0]; 755 *tl++ = op->nfso_stateid.other[1]; 756 *tl = op->nfso_stateid.other[2]; 757 if (syscred) 758 nd->nd_flag |= ND_USEGSSNAME; 759 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 760 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 761 if (error) 762 return (error); 763 NFSCL_INCRSEQID(op->nfso_own->nfsow_seqid, nd); 764 if (nd->nd_repstat == 0) 765 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID); 766 error = nd->nd_repstat; 767 if (error == NFSERR_STALESTATEID) 768 nfscl_initiate_recovery(op->nfso_own->nfsow_clp); 769 nfsmout: 770 mbuf_freem(nd->nd_mrep); 771 return (error); 772 } 773 774 /* 775 * V4 Open Confirm RPC. 776 */ 777 APPLESTATIC int 778 nfsrpc_openconfirm(vnode_t vp, u_int8_t *nfhp, int fhlen, 779 struct nfsclopen *op, struct ucred *cred, NFSPROC_T *p) 780 { 781 u_int32_t *tl; 782 struct nfsrv_descript nfsd, *nd = &nfsd; 783 struct nfsmount *nmp; 784 int error; 785 786 nmp = VFSTONFS(vnode_mount(vp)); 787 if (NFSHASNFSV4N(nmp)) 788 return (0); /* No confirmation for NFSv4.1. */ 789 nfscl_reqstart(nd, NFSPROC_OPENCONFIRM, nmp, nfhp, fhlen, NULL, NULL); 790 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED + NFSX_STATEID); 791 *tl++ = op->nfso_stateid.seqid; 792 *tl++ = op->nfso_stateid.other[0]; 793 *tl++ = op->nfso_stateid.other[1]; 794 *tl++ = op->nfso_stateid.other[2]; 795 *tl = txdr_unsigned(op->nfso_own->nfsow_seqid); 796 error = nfscl_request(nd, vp, p, cred, NULL); 797 if (error) 798 return (error); 799 NFSCL_INCRSEQID(op->nfso_own->nfsow_seqid, nd); 800 if (!nd->nd_repstat) { 801 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID); 802 op->nfso_stateid.seqid = *tl++; 803 op->nfso_stateid.other[0] = *tl++; 804 op->nfso_stateid.other[1] = *tl++; 805 op->nfso_stateid.other[2] = *tl; 806 } 807 error = nd->nd_repstat; 808 if (error == NFSERR_STALESTATEID) 809 nfscl_initiate_recovery(op->nfso_own->nfsow_clp); 810 nfsmout: 811 mbuf_freem(nd->nd_mrep); 812 return (error); 813 } 814 815 /* 816 * Do the setclientid and setclientid confirm RPCs. Called from nfs_statfs() 817 * when a mount has just occurred and when the server replies NFSERR_EXPIRED. 818 */ 819 APPLESTATIC int 820 nfsrpc_setclient(struct nfsmount *nmp, struct nfsclclient *clp, int reclaim, 821 struct ucred *cred, NFSPROC_T *p) 822 { 823 u_int32_t *tl; 824 struct nfsrv_descript nfsd; 825 struct nfsrv_descript *nd = &nfsd; 826 nfsattrbit_t attrbits; 827 u_int8_t *cp = NULL, *cp2, addr[INET6_ADDRSTRLEN + 9]; 828 u_short port; 829 int error, isinet6 = 0, callblen; 830 nfsquad_t confirm; 831 u_int32_t lease; 832 static u_int32_t rev = 0; 833 struct nfsclds *dsp; 834 struct in6_addr a6; 835 struct nfsclsession *tsep; 836 837 if (nfsboottime.tv_sec == 0) 838 NFSSETBOOTTIME(nfsboottime); 839 clp->nfsc_rev = rev++; 840 if (NFSHASNFSV4N(nmp)) { 841 /* 842 * Either there was no previous session or the 843 * previous session has failed, so... 844 * do an ExchangeID followed by the CreateSession. 845 */ 846 error = nfsrpc_exchangeid(nmp, clp, &nmp->nm_sockreq, 847 NFSV4EXCH_USEPNFSMDS | NFSV4EXCH_USENONPNFS, &dsp, cred, p); 848 NFSCL_DEBUG(1, "aft exch=%d\n", error); 849 if (error == 0) 850 error = nfsrpc_createsession(nmp, &dsp->nfsclds_sess, 851 &nmp->nm_sockreq, 852 dsp->nfsclds_sess.nfsess_sequenceid, 1, cred, p); 853 if (error == 0) { 854 NFSLOCKMNT(nmp); 855 /* 856 * The old sessions cannot be safely free'd 857 * here, since they may still be used by 858 * in-progress RPCs. 859 */ 860 tsep = NULL; 861 if (TAILQ_FIRST(&nmp->nm_sess) != NULL) 862 tsep = NFSMNT_MDSSESSION(nmp); 863 TAILQ_INSERT_HEAD(&nmp->nm_sess, dsp, 864 nfsclds_list); 865 /* 866 * Wake up RPCs waiting for a slot on the 867 * old session. These will then fail with 868 * NFSERR_BADSESSION and be retried with the 869 * new session by nfsv4_setsequence(). 870 * Also wakeup() processes waiting for the 871 * new session. 872 */ 873 if (tsep != NULL) 874 wakeup(&tsep->nfsess_slots); 875 wakeup(&nmp->nm_sess); 876 NFSUNLOCKMNT(nmp); 877 } else 878 nfscl_freenfsclds(dsp); 879 NFSCL_DEBUG(1, "aft createsess=%d\n", error); 880 if (error == 0 && reclaim == 0) { 881 error = nfsrpc_reclaimcomplete(nmp, cred, p); 882 NFSCL_DEBUG(1, "aft reclaimcomp=%d\n", error); 883 if (error == NFSERR_COMPLETEALREADY || 884 error == NFSERR_NOTSUPP) 885 /* Ignore this error. */ 886 error = 0; 887 } 888 return (error); 889 } 890 891 /* 892 * Allocate a single session structure for NFSv4.0, because some of 893 * the fields are used by NFSv4.0 although it doesn't do a session. 894 */ 895 dsp = malloc(sizeof(struct nfsclds), M_NFSCLDS, M_WAITOK | M_ZERO); 896 mtx_init(&dsp->nfsclds_mtx, "nfsds", NULL, MTX_DEF); 897 mtx_init(&dsp->nfsclds_sess.nfsess_mtx, "nfssession", NULL, MTX_DEF); 898 NFSLOCKMNT(nmp); 899 TAILQ_INSERT_HEAD(&nmp->nm_sess, dsp, nfsclds_list); 900 tsep = NFSMNT_MDSSESSION(nmp); 901 NFSUNLOCKMNT(nmp); 902 903 nfscl_reqstart(nd, NFSPROC_SETCLIENTID, nmp, NULL, 0, NULL, NULL); 904 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 905 *tl++ = txdr_unsigned(nfsboottime.tv_sec); 906 *tl = txdr_unsigned(clp->nfsc_rev); 907 (void) nfsm_strtom(nd, clp->nfsc_id, clp->nfsc_idlen); 908 909 /* 910 * set up the callback address 911 */ 912 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 913 *tl = txdr_unsigned(NFS_CALLBCKPROG); 914 callblen = strlen(nfsv4_callbackaddr); 915 if (callblen == 0) 916 cp = nfscl_getmyip(nmp, &a6, &isinet6); 917 if (nfscl_enablecallb && nfs_numnfscbd > 0 && 918 (callblen > 0 || cp != NULL)) { 919 port = htons(nfsv4_cbport); 920 cp2 = (u_int8_t *)&port; 921 #ifdef INET6 922 if ((callblen > 0 && 923 strchr(nfsv4_callbackaddr, ':')) || isinet6) { 924 char ip6buf[INET6_ADDRSTRLEN], *ip6add; 925 926 (void) nfsm_strtom(nd, "tcp6", 4); 927 if (callblen == 0) { 928 ip6_sprintf(ip6buf, (struct in6_addr *)cp); 929 ip6add = ip6buf; 930 } else { 931 ip6add = nfsv4_callbackaddr; 932 } 933 snprintf(addr, INET6_ADDRSTRLEN + 9, "%s.%d.%d", 934 ip6add, cp2[0], cp2[1]); 935 } else 936 #endif 937 { 938 (void) nfsm_strtom(nd, "tcp", 3); 939 if (callblen == 0) 940 snprintf(addr, INET6_ADDRSTRLEN + 9, 941 "%d.%d.%d.%d.%d.%d", cp[0], cp[1], 942 cp[2], cp[3], cp2[0], cp2[1]); 943 else 944 snprintf(addr, INET6_ADDRSTRLEN + 9, 945 "%s.%d.%d", nfsv4_callbackaddr, 946 cp2[0], cp2[1]); 947 } 948 (void) nfsm_strtom(nd, addr, strlen(addr)); 949 } else { 950 (void) nfsm_strtom(nd, "tcp", 3); 951 (void) nfsm_strtom(nd, "0.0.0.0.0.0", 11); 952 } 953 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 954 *tl = txdr_unsigned(clp->nfsc_cbident); 955 nd->nd_flag |= ND_USEGSSNAME; 956 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 957 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 958 if (error) 959 return (error); 960 if (nd->nd_repstat == 0) { 961 NFSM_DISSECT(tl, u_int32_t *, 4 * NFSX_UNSIGNED); 962 tsep->nfsess_clientid.lval[0] = *tl++; 963 tsep->nfsess_clientid.lval[1] = *tl++; 964 confirm.lval[0] = *tl++; 965 confirm.lval[1] = *tl; 966 mbuf_freem(nd->nd_mrep); 967 nd->nd_mrep = NULL; 968 969 /* 970 * and confirm it. 971 */ 972 nfscl_reqstart(nd, NFSPROC_SETCLIENTIDCFRM, nmp, NULL, 0, NULL, 973 NULL); 974 NFSM_BUILD(tl, u_int32_t *, 4 * NFSX_UNSIGNED); 975 *tl++ = tsep->nfsess_clientid.lval[0]; 976 *tl++ = tsep->nfsess_clientid.lval[1]; 977 *tl++ = confirm.lval[0]; 978 *tl = confirm.lval[1]; 979 nd->nd_flag |= ND_USEGSSNAME; 980 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, 981 cred, NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 982 if (error) 983 return (error); 984 mbuf_freem(nd->nd_mrep); 985 nd->nd_mrep = NULL; 986 if (nd->nd_repstat == 0) { 987 nfscl_reqstart(nd, NFSPROC_GETATTR, nmp, nmp->nm_fh, 988 nmp->nm_fhsize, NULL, NULL); 989 NFSZERO_ATTRBIT(&attrbits); 990 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_LEASETIME); 991 (void) nfsrv_putattrbit(nd, &attrbits); 992 nd->nd_flag |= ND_USEGSSNAME; 993 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, 994 cred, NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 995 if (error) 996 return (error); 997 if (nd->nd_repstat == 0) { 998 error = nfsv4_loadattr(nd, NULL, NULL, NULL, NULL, 0, NULL, 999 NULL, NULL, NULL, NULL, 0, NULL, &lease, NULL, p, cred); 1000 if (error) 1001 goto nfsmout; 1002 clp->nfsc_renew = NFSCL_RENEW(lease); 1003 clp->nfsc_expire = NFSD_MONOSEC + clp->nfsc_renew; 1004 clp->nfsc_clientidrev++; 1005 if (clp->nfsc_clientidrev == 0) 1006 clp->nfsc_clientidrev++; 1007 } 1008 } 1009 } 1010 error = nd->nd_repstat; 1011 nfsmout: 1012 mbuf_freem(nd->nd_mrep); 1013 return (error); 1014 } 1015 1016 /* 1017 * nfs getattr call. 1018 */ 1019 APPLESTATIC int 1020 nfsrpc_getattr(vnode_t vp, struct ucred *cred, NFSPROC_T *p, 1021 struct nfsvattr *nap, void *stuff) 1022 { 1023 struct nfsrv_descript nfsd, *nd = &nfsd; 1024 int error; 1025 nfsattrbit_t attrbits; 1026 1027 NFSCL_REQSTART(nd, NFSPROC_GETATTR, vp); 1028 if (nd->nd_flag & ND_NFSV4) { 1029 NFSGETATTR_ATTRBIT(&attrbits); 1030 (void) nfsrv_putattrbit(nd, &attrbits); 1031 } 1032 error = nfscl_request(nd, vp, p, cred, stuff); 1033 if (error) 1034 return (error); 1035 if (!nd->nd_repstat) 1036 error = nfsm_loadattr(nd, nap); 1037 else 1038 error = nd->nd_repstat; 1039 mbuf_freem(nd->nd_mrep); 1040 return (error); 1041 } 1042 1043 /* 1044 * nfs getattr call with non-vnode arguemnts. 1045 */ 1046 APPLESTATIC int 1047 nfsrpc_getattrnovp(struct nfsmount *nmp, u_int8_t *fhp, int fhlen, int syscred, 1048 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, u_int64_t *xidp, 1049 uint32_t *leasep) 1050 { 1051 struct nfsrv_descript nfsd, *nd = &nfsd; 1052 int error, vers = NFS_VER2; 1053 nfsattrbit_t attrbits; 1054 1055 nfscl_reqstart(nd, NFSPROC_GETATTR, nmp, fhp, fhlen, NULL, NULL); 1056 if (nd->nd_flag & ND_NFSV4) { 1057 vers = NFS_VER4; 1058 NFSGETATTR_ATTRBIT(&attrbits); 1059 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_LEASETIME); 1060 (void) nfsrv_putattrbit(nd, &attrbits); 1061 } else if (nd->nd_flag & ND_NFSV3) { 1062 vers = NFS_VER3; 1063 } 1064 if (syscred) 1065 nd->nd_flag |= ND_USEGSSNAME; 1066 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 1067 NFS_PROG, vers, NULL, 1, xidp, NULL); 1068 if (error) 1069 return (error); 1070 if (nd->nd_repstat == 0) { 1071 if ((nd->nd_flag & ND_NFSV4) != 0) 1072 error = nfsv4_loadattr(nd, NULL, nap, NULL, NULL, 0, 1073 NULL, NULL, NULL, NULL, NULL, 0, NULL, leasep, NULL, 1074 NULL, NULL); 1075 else 1076 error = nfsm_loadattr(nd, nap); 1077 } else 1078 error = nd->nd_repstat; 1079 mbuf_freem(nd->nd_mrep); 1080 return (error); 1081 } 1082 1083 /* 1084 * Do an nfs setattr operation. 1085 */ 1086 APPLESTATIC int 1087 nfsrpc_setattr(vnode_t vp, struct vattr *vap, NFSACL_T *aclp, 1088 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *rnap, int *attrflagp, 1089 void *stuff) 1090 { 1091 int error, expireret = 0, openerr, retrycnt; 1092 u_int32_t clidrev = 0, mode; 1093 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 1094 struct nfsfh *nfhp; 1095 nfsv4stateid_t stateid; 1096 void *lckp; 1097 1098 if (nmp->nm_clp != NULL) 1099 clidrev = nmp->nm_clp->nfsc_clientidrev; 1100 if (vap != NULL && NFSATTRISSET(u_quad_t, vap, va_size)) 1101 mode = NFSV4OPEN_ACCESSWRITE; 1102 else 1103 mode = NFSV4OPEN_ACCESSREAD; 1104 retrycnt = 0; 1105 do { 1106 lckp = NULL; 1107 openerr = 1; 1108 if (NFSHASNFSV4(nmp)) { 1109 nfhp = VTONFS(vp)->n_fhp; 1110 error = nfscl_getstateid(vp, nfhp->nfh_fh, 1111 nfhp->nfh_len, mode, 0, cred, p, &stateid, &lckp); 1112 if (error && vnode_vtype(vp) == VREG && 1113 (mode == NFSV4OPEN_ACCESSWRITE || 1114 nfstest_openallsetattr)) { 1115 /* 1116 * No Open stateid, so try and open the file 1117 * now. 1118 */ 1119 if (mode == NFSV4OPEN_ACCESSWRITE) 1120 openerr = nfsrpc_open(vp, FWRITE, cred, 1121 p); 1122 else 1123 openerr = nfsrpc_open(vp, FREAD, cred, 1124 p); 1125 if (!openerr) 1126 (void) nfscl_getstateid(vp, 1127 nfhp->nfh_fh, nfhp->nfh_len, 1128 mode, 0, cred, p, &stateid, &lckp); 1129 } 1130 } 1131 if (vap != NULL) 1132 error = nfsrpc_setattrrpc(vp, vap, &stateid, cred, p, 1133 rnap, attrflagp, stuff); 1134 else 1135 error = nfsrpc_setaclrpc(vp, cred, p, aclp, &stateid, 1136 stuff); 1137 if (error == NFSERR_STALESTATEID) 1138 nfscl_initiate_recovery(nmp->nm_clp); 1139 if (lckp != NULL) 1140 nfscl_lockderef(lckp); 1141 if (!openerr) 1142 (void) nfsrpc_close(vp, 0, p); 1143 if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 1144 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 1145 error == NFSERR_OLDSTATEID || error == NFSERR_BADSESSION) { 1146 (void) nfs_catnap(PZERO, error, "nfs_setattr"); 1147 } else if ((error == NFSERR_EXPIRED || 1148 error == NFSERR_BADSTATEID) && clidrev != 0) { 1149 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p); 1150 } 1151 retrycnt++; 1152 } while (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 1153 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 1154 error == NFSERR_BADSESSION || 1155 (error == NFSERR_OLDSTATEID && retrycnt < 20) || 1156 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) && 1157 expireret == 0 && clidrev != 0 && retrycnt < 4)); 1158 if (error && retrycnt >= 4) 1159 error = EIO; 1160 return (error); 1161 } 1162 1163 static int 1164 nfsrpc_setattrrpc(vnode_t vp, struct vattr *vap, 1165 nfsv4stateid_t *stateidp, struct ucred *cred, NFSPROC_T *p, 1166 struct nfsvattr *rnap, int *attrflagp, void *stuff) 1167 { 1168 u_int32_t *tl; 1169 struct nfsrv_descript nfsd, *nd = &nfsd; 1170 int error; 1171 nfsattrbit_t attrbits; 1172 1173 *attrflagp = 0; 1174 NFSCL_REQSTART(nd, NFSPROC_SETATTR, vp); 1175 if (nd->nd_flag & ND_NFSV4) 1176 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID); 1177 vap->va_type = vnode_vtype(vp); 1178 nfscl_fillsattr(nd, vap, vp, NFSSATTR_FULL, 0); 1179 if (nd->nd_flag & ND_NFSV3) { 1180 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1181 *tl = newnfs_false; 1182 } else if (nd->nd_flag & ND_NFSV4) { 1183 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1184 *tl = txdr_unsigned(NFSV4OP_GETATTR); 1185 NFSGETATTR_ATTRBIT(&attrbits); 1186 (void) nfsrv_putattrbit(nd, &attrbits); 1187 } 1188 error = nfscl_request(nd, vp, p, cred, stuff); 1189 if (error) 1190 return (error); 1191 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) 1192 error = nfscl_wcc_data(nd, vp, rnap, attrflagp, NULL, stuff); 1193 if ((nd->nd_flag & ND_NFSV4) && !error) 1194 error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL); 1195 if (!(nd->nd_flag & ND_NFSV3) && !nd->nd_repstat && !error) 1196 error = nfscl_postop_attr(nd, rnap, attrflagp, stuff); 1197 mbuf_freem(nd->nd_mrep); 1198 if (nd->nd_repstat && !error) 1199 error = nd->nd_repstat; 1200 return (error); 1201 } 1202 1203 /* 1204 * nfs lookup rpc 1205 */ 1206 APPLESTATIC int 1207 nfsrpc_lookup(vnode_t dvp, char *name, int len, struct ucred *cred, 1208 NFSPROC_T *p, struct nfsvattr *dnap, struct nfsvattr *nap, 1209 struct nfsfh **nfhpp, int *attrflagp, int *dattrflagp, void *stuff) 1210 { 1211 u_int32_t *tl; 1212 struct nfsrv_descript nfsd, *nd = &nfsd; 1213 struct nfsmount *nmp; 1214 struct nfsnode *np; 1215 struct nfsfh *nfhp; 1216 nfsattrbit_t attrbits; 1217 int error = 0, lookupp = 0; 1218 1219 *attrflagp = 0; 1220 *dattrflagp = 0; 1221 if (vnode_vtype(dvp) != VDIR) 1222 return (ENOTDIR); 1223 nmp = VFSTONFS(vnode_mount(dvp)); 1224 if (len > NFS_MAXNAMLEN) 1225 return (ENAMETOOLONG); 1226 if (NFSHASNFSV4(nmp) && len == 1 && 1227 name[0] == '.') { 1228 /* 1229 * Just return the current dir's fh. 1230 */ 1231 np = VTONFS(dvp); 1232 MALLOC(nfhp, struct nfsfh *, sizeof (struct nfsfh) + 1233 np->n_fhp->nfh_len, M_NFSFH, M_WAITOK); 1234 nfhp->nfh_len = np->n_fhp->nfh_len; 1235 NFSBCOPY(np->n_fhp->nfh_fh, nfhp->nfh_fh, nfhp->nfh_len); 1236 *nfhpp = nfhp; 1237 return (0); 1238 } 1239 if (NFSHASNFSV4(nmp) && len == 2 && 1240 name[0] == '.' && name[1] == '.') { 1241 lookupp = 1; 1242 NFSCL_REQSTART(nd, NFSPROC_LOOKUPP, dvp); 1243 } else { 1244 NFSCL_REQSTART(nd, NFSPROC_LOOKUP, dvp); 1245 (void) nfsm_strtom(nd, name, len); 1246 } 1247 if (nd->nd_flag & ND_NFSV4) { 1248 NFSGETATTR_ATTRBIT(&attrbits); 1249 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1250 *tl++ = txdr_unsigned(NFSV4OP_GETFH); 1251 *tl = txdr_unsigned(NFSV4OP_GETATTR); 1252 (void) nfsrv_putattrbit(nd, &attrbits); 1253 } 1254 error = nfscl_request(nd, dvp, p, cred, stuff); 1255 if (error) 1256 return (error); 1257 if (nd->nd_repstat) { 1258 /* 1259 * When an NFSv4 Lookupp returns ENOENT, it means that 1260 * the lookup is at the root of an fs, so return this dir. 1261 */ 1262 if (nd->nd_repstat == NFSERR_NOENT && lookupp) { 1263 np = VTONFS(dvp); 1264 MALLOC(nfhp, struct nfsfh *, sizeof (struct nfsfh) + 1265 np->n_fhp->nfh_len, M_NFSFH, M_WAITOK); 1266 nfhp->nfh_len = np->n_fhp->nfh_len; 1267 NFSBCOPY(np->n_fhp->nfh_fh, nfhp->nfh_fh, nfhp->nfh_len); 1268 *nfhpp = nfhp; 1269 mbuf_freem(nd->nd_mrep); 1270 return (0); 1271 } 1272 if (nd->nd_flag & ND_NFSV3) 1273 error = nfscl_postop_attr(nd, dnap, dattrflagp, stuff); 1274 else if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == 1275 ND_NFSV4) { 1276 /* Load the directory attributes. */ 1277 error = nfsm_loadattr(nd, dnap); 1278 if (error == 0) 1279 *dattrflagp = 1; 1280 } 1281 goto nfsmout; 1282 } 1283 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == ND_NFSV4) { 1284 /* Load the directory attributes. */ 1285 error = nfsm_loadattr(nd, dnap); 1286 if (error != 0) 1287 goto nfsmout; 1288 *dattrflagp = 1; 1289 /* Skip over the Lookup and GetFH operation status values. */ 1290 NFSM_DISSECT(tl, u_int32_t *, 4 * NFSX_UNSIGNED); 1291 } 1292 error = nfsm_getfh(nd, nfhpp); 1293 if (error) 1294 goto nfsmout; 1295 1296 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 1297 if ((nd->nd_flag & ND_NFSV3) && !error) 1298 error = nfscl_postop_attr(nd, dnap, dattrflagp, stuff); 1299 nfsmout: 1300 mbuf_freem(nd->nd_mrep); 1301 if (!error && nd->nd_repstat) 1302 error = nd->nd_repstat; 1303 return (error); 1304 } 1305 1306 /* 1307 * Do a readlink rpc. 1308 */ 1309 APPLESTATIC int 1310 nfsrpc_readlink(vnode_t vp, struct uio *uiop, struct ucred *cred, 1311 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff) 1312 { 1313 u_int32_t *tl; 1314 struct nfsrv_descript nfsd, *nd = &nfsd; 1315 struct nfsnode *np = VTONFS(vp); 1316 nfsattrbit_t attrbits; 1317 int error, len, cangetattr = 1; 1318 1319 *attrflagp = 0; 1320 NFSCL_REQSTART(nd, NFSPROC_READLINK, vp); 1321 if (nd->nd_flag & ND_NFSV4) { 1322 /* 1323 * And do a Getattr op. 1324 */ 1325 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1326 *tl = txdr_unsigned(NFSV4OP_GETATTR); 1327 NFSGETATTR_ATTRBIT(&attrbits); 1328 (void) nfsrv_putattrbit(nd, &attrbits); 1329 } 1330 error = nfscl_request(nd, vp, p, cred, stuff); 1331 if (error) 1332 return (error); 1333 if (nd->nd_flag & ND_NFSV3) 1334 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 1335 if (!nd->nd_repstat && !error) { 1336 NFSM_STRSIZ(len, NFS_MAXPATHLEN); 1337 /* 1338 * This seems weird to me, but must have been added to 1339 * FreeBSD for some reason. The only thing I can think of 1340 * is that there was/is some server that replies with 1341 * more link data than it should? 1342 */ 1343 if (len == NFS_MAXPATHLEN) { 1344 NFSLOCKNODE(np); 1345 if (np->n_size > 0 && np->n_size < NFS_MAXPATHLEN) { 1346 len = np->n_size; 1347 cangetattr = 0; 1348 } 1349 NFSUNLOCKNODE(np); 1350 } 1351 error = nfsm_mbufuio(nd, uiop, len); 1352 if ((nd->nd_flag & ND_NFSV4) && !error && cangetattr) 1353 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 1354 } 1355 if (nd->nd_repstat && !error) 1356 error = nd->nd_repstat; 1357 nfsmout: 1358 mbuf_freem(nd->nd_mrep); 1359 return (error); 1360 } 1361 1362 /* 1363 * Read operation. 1364 */ 1365 APPLESTATIC int 1366 nfsrpc_read(vnode_t vp, struct uio *uiop, struct ucred *cred, 1367 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff) 1368 { 1369 int error, expireret = 0, retrycnt; 1370 u_int32_t clidrev = 0; 1371 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 1372 struct nfsnode *np = VTONFS(vp); 1373 struct ucred *newcred; 1374 struct nfsfh *nfhp = NULL; 1375 nfsv4stateid_t stateid; 1376 void *lckp; 1377 1378 if (nmp->nm_clp != NULL) 1379 clidrev = nmp->nm_clp->nfsc_clientidrev; 1380 newcred = cred; 1381 if (NFSHASNFSV4(nmp)) { 1382 nfhp = np->n_fhp; 1383 newcred = NFSNEWCRED(cred); 1384 } 1385 retrycnt = 0; 1386 do { 1387 lckp = NULL; 1388 if (NFSHASNFSV4(nmp)) 1389 (void)nfscl_getstateid(vp, nfhp->nfh_fh, nfhp->nfh_len, 1390 NFSV4OPEN_ACCESSREAD, 0, newcred, p, &stateid, 1391 &lckp); 1392 error = nfsrpc_readrpc(vp, uiop, newcred, &stateid, p, nap, 1393 attrflagp, stuff); 1394 if (error == NFSERR_STALESTATEID) 1395 nfscl_initiate_recovery(nmp->nm_clp); 1396 if (lckp != NULL) 1397 nfscl_lockderef(lckp); 1398 if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 1399 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 1400 error == NFSERR_OLDSTATEID || error == NFSERR_BADSESSION) { 1401 (void) nfs_catnap(PZERO, error, "nfs_read"); 1402 } else if ((error == NFSERR_EXPIRED || 1403 error == NFSERR_BADSTATEID) && clidrev != 0) { 1404 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p); 1405 } 1406 retrycnt++; 1407 } while (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 1408 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 1409 error == NFSERR_BADSESSION || 1410 (error == NFSERR_OLDSTATEID && retrycnt < 20) || 1411 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) && 1412 expireret == 0 && clidrev != 0 && retrycnt < 4)); 1413 if (error && retrycnt >= 4) 1414 error = EIO; 1415 if (NFSHASNFSV4(nmp)) 1416 NFSFREECRED(newcred); 1417 return (error); 1418 } 1419 1420 /* 1421 * The actual read RPC. 1422 */ 1423 static int 1424 nfsrpc_readrpc(vnode_t vp, struct uio *uiop, struct ucred *cred, 1425 nfsv4stateid_t *stateidp, NFSPROC_T *p, struct nfsvattr *nap, 1426 int *attrflagp, void *stuff) 1427 { 1428 u_int32_t *tl; 1429 int error = 0, len, retlen, tsiz, eof = 0; 1430 struct nfsrv_descript nfsd; 1431 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 1432 struct nfsrv_descript *nd = &nfsd; 1433 int rsize; 1434 off_t tmp_off; 1435 1436 *attrflagp = 0; 1437 tsiz = uio_uio_resid(uiop); 1438 tmp_off = uiop->uio_offset + tsiz; 1439 NFSLOCKMNT(nmp); 1440 if (tmp_off > nmp->nm_maxfilesize || tmp_off < uiop->uio_offset) { 1441 NFSUNLOCKMNT(nmp); 1442 return (EFBIG); 1443 } 1444 rsize = nmp->nm_rsize; 1445 NFSUNLOCKMNT(nmp); 1446 nd->nd_mrep = NULL; 1447 while (tsiz > 0) { 1448 *attrflagp = 0; 1449 len = (tsiz > rsize) ? rsize : tsiz; 1450 NFSCL_REQSTART(nd, NFSPROC_READ, vp); 1451 if (nd->nd_flag & ND_NFSV4) 1452 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID); 1453 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED * 3); 1454 if (nd->nd_flag & ND_NFSV2) { 1455 *tl++ = txdr_unsigned(uiop->uio_offset); 1456 *tl++ = txdr_unsigned(len); 1457 *tl = 0; 1458 } else { 1459 txdr_hyper(uiop->uio_offset, tl); 1460 *(tl + 2) = txdr_unsigned(len); 1461 } 1462 /* 1463 * Since I can't do a Getattr for NFSv4 for Write, there 1464 * doesn't seem any point in doing one here, either. 1465 * (See the comment in nfsrpc_writerpc() for more info.) 1466 */ 1467 error = nfscl_request(nd, vp, p, cred, stuff); 1468 if (error) 1469 return (error); 1470 if (nd->nd_flag & ND_NFSV3) { 1471 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 1472 } else if (!nd->nd_repstat && (nd->nd_flag & ND_NFSV2)) { 1473 error = nfsm_loadattr(nd, nap); 1474 if (!error) 1475 *attrflagp = 1; 1476 } 1477 if (nd->nd_repstat || error) { 1478 if (!error) 1479 error = nd->nd_repstat; 1480 goto nfsmout; 1481 } 1482 if (nd->nd_flag & ND_NFSV3) { 1483 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1484 eof = fxdr_unsigned(int, *(tl + 1)); 1485 } else if (nd->nd_flag & ND_NFSV4) { 1486 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 1487 eof = fxdr_unsigned(int, *tl); 1488 } 1489 NFSM_STRSIZ(retlen, len); 1490 error = nfsm_mbufuio(nd, uiop, retlen); 1491 if (error) 1492 goto nfsmout; 1493 mbuf_freem(nd->nd_mrep); 1494 nd->nd_mrep = NULL; 1495 tsiz -= retlen; 1496 if (!(nd->nd_flag & ND_NFSV2)) { 1497 if (eof || retlen == 0) 1498 tsiz = 0; 1499 } else if (retlen < len) 1500 tsiz = 0; 1501 } 1502 return (0); 1503 nfsmout: 1504 if (nd->nd_mrep != NULL) 1505 mbuf_freem(nd->nd_mrep); 1506 return (error); 1507 } 1508 1509 /* 1510 * nfs write operation 1511 * When called_from_strategy != 0, it should return EIO for an error that 1512 * indicates recovery is in progress, so that the buffer will be left 1513 * dirty and be written back to the server later. If it loops around, 1514 * the recovery thread could get stuck waiting for the buffer and recovery 1515 * will then deadlock. 1516 */ 1517 APPLESTATIC int 1518 nfsrpc_write(vnode_t vp, struct uio *uiop, int *iomode, int *must_commit, 1519 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, 1520 void *stuff, int called_from_strategy) 1521 { 1522 int error, expireret = 0, retrycnt, nostateid; 1523 u_int32_t clidrev = 0; 1524 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 1525 struct nfsnode *np = VTONFS(vp); 1526 struct ucred *newcred; 1527 struct nfsfh *nfhp = NULL; 1528 nfsv4stateid_t stateid; 1529 void *lckp; 1530 1531 *must_commit = 0; 1532 if (nmp->nm_clp != NULL) 1533 clidrev = nmp->nm_clp->nfsc_clientidrev; 1534 newcred = cred; 1535 if (NFSHASNFSV4(nmp)) { 1536 newcred = NFSNEWCRED(cred); 1537 nfhp = np->n_fhp; 1538 } 1539 retrycnt = 0; 1540 do { 1541 lckp = NULL; 1542 nostateid = 0; 1543 if (NFSHASNFSV4(nmp)) { 1544 (void)nfscl_getstateid(vp, nfhp->nfh_fh, nfhp->nfh_len, 1545 NFSV4OPEN_ACCESSWRITE, 0, newcred, p, &stateid, 1546 &lckp); 1547 if (stateid.other[0] == 0 && stateid.other[1] == 0 && 1548 stateid.other[2] == 0) { 1549 nostateid = 1; 1550 NFSCL_DEBUG(1, "stateid0 in write\n"); 1551 } 1552 } 1553 1554 /* 1555 * If there is no stateid for NFSv4, it means this is an 1556 * extraneous write after close. Basically a poorly 1557 * implemented buffer cache. Just don't do the write. 1558 */ 1559 if (nostateid) 1560 error = 0; 1561 else 1562 error = nfsrpc_writerpc(vp, uiop, iomode, must_commit, 1563 newcred, &stateid, p, nap, attrflagp, stuff); 1564 if (error == NFSERR_STALESTATEID) 1565 nfscl_initiate_recovery(nmp->nm_clp); 1566 if (lckp != NULL) 1567 nfscl_lockderef(lckp); 1568 if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 1569 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 1570 error == NFSERR_OLDSTATEID || error == NFSERR_BADSESSION) { 1571 (void) nfs_catnap(PZERO, error, "nfs_write"); 1572 } else if ((error == NFSERR_EXPIRED || 1573 error == NFSERR_BADSTATEID) && clidrev != 0) { 1574 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p); 1575 } 1576 retrycnt++; 1577 } while (error == NFSERR_GRACE || error == NFSERR_DELAY || 1578 ((error == NFSERR_STALESTATEID || error == NFSERR_BADSESSION || 1579 error == NFSERR_STALEDONTRECOVER) && called_from_strategy == 0) || 1580 (error == NFSERR_OLDSTATEID && retrycnt < 20) || 1581 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) && 1582 expireret == 0 && clidrev != 0 && retrycnt < 4)); 1583 if (error != 0 && (retrycnt >= 4 || 1584 ((error == NFSERR_STALESTATEID || error == NFSERR_BADSESSION || 1585 error == NFSERR_STALEDONTRECOVER) && called_from_strategy != 0))) 1586 error = EIO; 1587 if (NFSHASNFSV4(nmp)) 1588 NFSFREECRED(newcred); 1589 return (error); 1590 } 1591 1592 /* 1593 * The actual write RPC. 1594 */ 1595 static int 1596 nfsrpc_writerpc(vnode_t vp, struct uio *uiop, int *iomode, 1597 int *must_commit, struct ucred *cred, nfsv4stateid_t *stateidp, 1598 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff) 1599 { 1600 u_int32_t *tl; 1601 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 1602 struct nfsnode *np = VTONFS(vp); 1603 int error = 0, len, tsiz, rlen, commit, committed = NFSWRITE_FILESYNC; 1604 int wccflag = 0, wsize; 1605 int32_t backup; 1606 struct nfsrv_descript nfsd; 1607 struct nfsrv_descript *nd = &nfsd; 1608 nfsattrbit_t attrbits; 1609 off_t tmp_off; 1610 1611 KASSERT(uiop->uio_iovcnt == 1, ("nfs: writerpc iovcnt > 1")); 1612 *attrflagp = 0; 1613 tsiz = uio_uio_resid(uiop); 1614 tmp_off = uiop->uio_offset + tsiz; 1615 NFSLOCKMNT(nmp); 1616 if (tmp_off > nmp->nm_maxfilesize || tmp_off < uiop->uio_offset) { 1617 NFSUNLOCKMNT(nmp); 1618 return (EFBIG); 1619 } 1620 wsize = nmp->nm_wsize; 1621 NFSUNLOCKMNT(nmp); 1622 nd->nd_mrep = NULL; /* NFSv2 sometimes does a write with */ 1623 nd->nd_repstat = 0; /* uio_resid == 0, so the while is not done */ 1624 while (tsiz > 0) { 1625 *attrflagp = 0; 1626 len = (tsiz > wsize) ? wsize : tsiz; 1627 NFSCL_REQSTART(nd, NFSPROC_WRITE, vp); 1628 if (nd->nd_flag & ND_NFSV4) { 1629 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID); 1630 NFSM_BUILD(tl, u_int32_t *, NFSX_HYPER+2*NFSX_UNSIGNED); 1631 txdr_hyper(uiop->uio_offset, tl); 1632 tl += 2; 1633 *tl++ = txdr_unsigned(*iomode); 1634 *tl = txdr_unsigned(len); 1635 } else if (nd->nd_flag & ND_NFSV3) { 1636 NFSM_BUILD(tl, u_int32_t *, NFSX_HYPER+3*NFSX_UNSIGNED); 1637 txdr_hyper(uiop->uio_offset, tl); 1638 tl += 2; 1639 *tl++ = txdr_unsigned(len); 1640 *tl++ = txdr_unsigned(*iomode); 1641 *tl = txdr_unsigned(len); 1642 } else { 1643 u_int32_t x; 1644 1645 NFSM_BUILD(tl, u_int32_t *, 4 * NFSX_UNSIGNED); 1646 /* 1647 * Not sure why someone changed this, since the 1648 * RFC clearly states that "beginoffset" and 1649 * "totalcount" are ignored, but it wouldn't 1650 * surprise me if there's a busted server out there. 1651 */ 1652 /* Set both "begin" and "current" to non-garbage. */ 1653 x = txdr_unsigned((u_int32_t)uiop->uio_offset); 1654 *tl++ = x; /* "begin offset" */ 1655 *tl++ = x; /* "current offset" */ 1656 x = txdr_unsigned(len); 1657 *tl++ = x; /* total to this offset */ 1658 *tl = x; /* size of this write */ 1659 1660 } 1661 nfsm_uiombuf(nd, uiop, len); 1662 /* 1663 * Although it is tempting to do a normal Getattr Op in the 1664 * NFSv4 compound, the result can be a nearly hung client 1665 * system if the Getattr asks for Owner and/or OwnerGroup. 1666 * It occurs when the client can't map either the Owner or 1667 * Owner_group name in the Getattr reply to a uid/gid. When 1668 * there is a cache miss, the kernel does an upcall to the 1669 * nfsuserd. Then, it can try and read the local /etc/passwd 1670 * or /etc/group file. It can then block in getnewbuf(), 1671 * waiting for dirty writes to be pushed to the NFS server. 1672 * The only reason this doesn't result in a complete 1673 * deadlock, is that the upcall times out and allows 1674 * the write to complete. However, progress is so slow 1675 * that it might just as well be deadlocked. 1676 * As such, we get the rest of the attributes, but not 1677 * Owner or Owner_group. 1678 * nb: nfscl_loadattrcache() needs to be told that these 1679 * partial attributes from a write rpc are being 1680 * passed in, via a argument flag. 1681 */ 1682 if (nd->nd_flag & ND_NFSV4) { 1683 NFSWRITEGETATTR_ATTRBIT(&attrbits); 1684 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1685 *tl = txdr_unsigned(NFSV4OP_GETATTR); 1686 (void) nfsrv_putattrbit(nd, &attrbits); 1687 } 1688 error = nfscl_request(nd, vp, p, cred, stuff); 1689 if (error) 1690 return (error); 1691 if (nd->nd_repstat) { 1692 /* 1693 * In case the rpc gets retried, roll 1694 * the uio fileds changed by nfsm_uiombuf() 1695 * back. 1696 */ 1697 uiop->uio_offset -= len; 1698 uio_uio_resid_add(uiop, len); 1699 uio_iov_base_add(uiop, -len); 1700 uio_iov_len_add(uiop, len); 1701 } 1702 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) { 1703 error = nfscl_wcc_data(nd, vp, nap, attrflagp, 1704 &wccflag, stuff); 1705 if (error) 1706 goto nfsmout; 1707 } 1708 if (!nd->nd_repstat) { 1709 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) { 1710 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED 1711 + NFSX_VERF); 1712 rlen = fxdr_unsigned(int, *tl++); 1713 if (rlen == 0) { 1714 error = NFSERR_IO; 1715 goto nfsmout; 1716 } else if (rlen < len) { 1717 backup = len - rlen; 1718 uio_iov_base_add(uiop, -(backup)); 1719 uio_iov_len_add(uiop, backup); 1720 uiop->uio_offset -= backup; 1721 uio_uio_resid_add(uiop, backup); 1722 len = rlen; 1723 } 1724 commit = fxdr_unsigned(int, *tl++); 1725 1726 /* 1727 * Return the lowest commitment level 1728 * obtained by any of the RPCs. 1729 */ 1730 if (committed == NFSWRITE_FILESYNC) 1731 committed = commit; 1732 else if (committed == NFSWRITE_DATASYNC && 1733 commit == NFSWRITE_UNSTABLE) 1734 committed = commit; 1735 NFSLOCKMNT(nmp); 1736 if (!NFSHASWRITEVERF(nmp)) { 1737 NFSBCOPY((caddr_t)tl, 1738 (caddr_t)&nmp->nm_verf[0], 1739 NFSX_VERF); 1740 NFSSETWRITEVERF(nmp); 1741 } else if (NFSBCMP(tl, nmp->nm_verf, 1742 NFSX_VERF)) { 1743 *must_commit = 1; 1744 NFSBCOPY(tl, nmp->nm_verf, NFSX_VERF); 1745 } 1746 NFSUNLOCKMNT(nmp); 1747 } 1748 if (nd->nd_flag & ND_NFSV4) 1749 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1750 if (nd->nd_flag & (ND_NFSV2 | ND_NFSV4)) { 1751 error = nfsm_loadattr(nd, nap); 1752 if (!error) 1753 *attrflagp = NFS_LATTR_NOSHRINK; 1754 } 1755 } else { 1756 error = nd->nd_repstat; 1757 } 1758 if (error) 1759 goto nfsmout; 1760 NFSWRITERPC_SETTIME(wccflag, np, nap, (nd->nd_flag & ND_NFSV4)); 1761 mbuf_freem(nd->nd_mrep); 1762 nd->nd_mrep = NULL; 1763 tsiz -= len; 1764 } 1765 nfsmout: 1766 if (nd->nd_mrep != NULL) 1767 mbuf_freem(nd->nd_mrep); 1768 *iomode = committed; 1769 if (nd->nd_repstat && !error) 1770 error = nd->nd_repstat; 1771 return (error); 1772 } 1773 1774 /* 1775 * nfs mknod rpc 1776 * For NFS v2 this is a kludge. Use a create rpc but with the IFMT bits of the 1777 * mode set to specify the file type and the size field for rdev. 1778 */ 1779 APPLESTATIC int 1780 nfsrpc_mknod(vnode_t dvp, char *name, int namelen, struct vattr *vap, 1781 u_int32_t rdev, enum vtype vtyp, struct ucred *cred, NFSPROC_T *p, 1782 struct nfsvattr *dnap, struct nfsvattr *nnap, struct nfsfh **nfhpp, 1783 int *attrflagp, int *dattrflagp, void *dstuff) 1784 { 1785 u_int32_t *tl; 1786 int error = 0; 1787 struct nfsrv_descript nfsd, *nd = &nfsd; 1788 nfsattrbit_t attrbits; 1789 1790 *nfhpp = NULL; 1791 *attrflagp = 0; 1792 *dattrflagp = 0; 1793 if (namelen > NFS_MAXNAMLEN) 1794 return (ENAMETOOLONG); 1795 NFSCL_REQSTART(nd, NFSPROC_MKNOD, dvp); 1796 if (nd->nd_flag & ND_NFSV4) { 1797 if (vtyp == VBLK || vtyp == VCHR) { 1798 NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 1799 *tl++ = vtonfsv34_type(vtyp); 1800 *tl++ = txdr_unsigned(NFSMAJOR(rdev)); 1801 *tl = txdr_unsigned(NFSMINOR(rdev)); 1802 } else { 1803 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1804 *tl = vtonfsv34_type(vtyp); 1805 } 1806 } 1807 (void) nfsm_strtom(nd, name, namelen); 1808 if (nd->nd_flag & ND_NFSV3) { 1809 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1810 *tl = vtonfsv34_type(vtyp); 1811 } 1812 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) 1813 nfscl_fillsattr(nd, vap, dvp, 0, 0); 1814 if ((nd->nd_flag & ND_NFSV3) && 1815 (vtyp == VCHR || vtyp == VBLK)) { 1816 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1817 *tl++ = txdr_unsigned(NFSMAJOR(rdev)); 1818 *tl = txdr_unsigned(NFSMINOR(rdev)); 1819 } 1820 if (nd->nd_flag & ND_NFSV4) { 1821 NFSGETATTR_ATTRBIT(&attrbits); 1822 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1823 *tl++ = txdr_unsigned(NFSV4OP_GETFH); 1824 *tl = txdr_unsigned(NFSV4OP_GETATTR); 1825 (void) nfsrv_putattrbit(nd, &attrbits); 1826 } 1827 if (nd->nd_flag & ND_NFSV2) 1828 nfscl_fillsattr(nd, vap, dvp, NFSSATTR_SIZERDEV, rdev); 1829 error = nfscl_request(nd, dvp, p, cred, dstuff); 1830 if (error) 1831 return (error); 1832 if (nd->nd_flag & ND_NFSV4) 1833 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 1834 if (!nd->nd_repstat) { 1835 if (nd->nd_flag & ND_NFSV4) { 1836 NFSM_DISSECT(tl, u_int32_t *, 5 * NFSX_UNSIGNED); 1837 error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL); 1838 if (error) 1839 goto nfsmout; 1840 } 1841 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp); 1842 if (error) 1843 goto nfsmout; 1844 } 1845 if (nd->nd_flag & ND_NFSV3) 1846 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 1847 if (!error && nd->nd_repstat) 1848 error = nd->nd_repstat; 1849 nfsmout: 1850 mbuf_freem(nd->nd_mrep); 1851 return (error); 1852 } 1853 1854 /* 1855 * nfs file create call 1856 * Mostly just call the approriate routine. (I separated out v4, so that 1857 * error recovery wouldn't be as difficult.) 1858 */ 1859 APPLESTATIC int 1860 nfsrpc_create(vnode_t dvp, char *name, int namelen, struct vattr *vap, 1861 nfsquad_t cverf, int fmode, struct ucred *cred, NFSPROC_T *p, 1862 struct nfsvattr *dnap, struct nfsvattr *nnap, struct nfsfh **nfhpp, 1863 int *attrflagp, int *dattrflagp, void *dstuff) 1864 { 1865 int error = 0, newone, expireret = 0, retrycnt, unlocked; 1866 struct nfsclowner *owp; 1867 struct nfscldeleg *dp; 1868 struct nfsmount *nmp = VFSTONFS(vnode_mount(dvp)); 1869 u_int32_t clidrev; 1870 1871 if (NFSHASNFSV4(nmp)) { 1872 retrycnt = 0; 1873 do { 1874 dp = NULL; 1875 error = nfscl_open(dvp, NULL, 0, (NFSV4OPEN_ACCESSWRITE | 1876 NFSV4OPEN_ACCESSREAD), 0, cred, p, &owp, NULL, &newone, 1877 NULL, 1); 1878 if (error) 1879 return (error); 1880 if (nmp->nm_clp != NULL) 1881 clidrev = nmp->nm_clp->nfsc_clientidrev; 1882 else 1883 clidrev = 0; 1884 error = nfsrpc_createv4(dvp, name, namelen, vap, cverf, fmode, 1885 owp, &dp, cred, p, dnap, nnap, nfhpp, attrflagp, dattrflagp, 1886 dstuff, &unlocked); 1887 /* 1888 * There is no need to invalidate cached attributes here, 1889 * since new post-delegation issue attributes are always 1890 * returned by nfsrpc_createv4() and these will update the 1891 * attribute cache. 1892 */ 1893 if (dp != NULL) 1894 (void) nfscl_deleg(nmp->nm_mountp, owp->nfsow_clp, 1895 (*nfhpp)->nfh_fh, (*nfhpp)->nfh_len, cred, p, &dp); 1896 nfscl_ownerrelease(owp, error, newone, unlocked); 1897 if (error == NFSERR_GRACE || error == NFSERR_STALECLIENTID || 1898 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 1899 error == NFSERR_BADSESSION) { 1900 (void) nfs_catnap(PZERO, error, "nfs_open"); 1901 } else if ((error == NFSERR_EXPIRED || 1902 error == NFSERR_BADSTATEID) && clidrev != 0) { 1903 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p); 1904 retrycnt++; 1905 } 1906 } while (error == NFSERR_GRACE || error == NFSERR_STALECLIENTID || 1907 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 1908 error == NFSERR_BADSESSION || 1909 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) && 1910 expireret == 0 && clidrev != 0 && retrycnt < 4)); 1911 if (error && retrycnt >= 4) 1912 error = EIO; 1913 } else { 1914 error = nfsrpc_createv23(dvp, name, namelen, vap, cverf, 1915 fmode, cred, p, dnap, nnap, nfhpp, attrflagp, dattrflagp, 1916 dstuff); 1917 } 1918 return (error); 1919 } 1920 1921 /* 1922 * The create rpc for v2 and 3. 1923 */ 1924 static int 1925 nfsrpc_createv23(vnode_t dvp, char *name, int namelen, struct vattr *vap, 1926 nfsquad_t cverf, int fmode, struct ucred *cred, NFSPROC_T *p, 1927 struct nfsvattr *dnap, struct nfsvattr *nnap, struct nfsfh **nfhpp, 1928 int *attrflagp, int *dattrflagp, void *dstuff) 1929 { 1930 u_int32_t *tl; 1931 int error = 0; 1932 struct nfsrv_descript nfsd, *nd = &nfsd; 1933 1934 *nfhpp = NULL; 1935 *attrflagp = 0; 1936 *dattrflagp = 0; 1937 if (namelen > NFS_MAXNAMLEN) 1938 return (ENAMETOOLONG); 1939 NFSCL_REQSTART(nd, NFSPROC_CREATE, dvp); 1940 (void) nfsm_strtom(nd, name, namelen); 1941 if (nd->nd_flag & ND_NFSV3) { 1942 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1943 if (fmode & O_EXCL) { 1944 *tl = txdr_unsigned(NFSCREATE_EXCLUSIVE); 1945 NFSM_BUILD(tl, u_int32_t *, NFSX_VERF); 1946 *tl++ = cverf.lval[0]; 1947 *tl = cverf.lval[1]; 1948 } else { 1949 *tl = txdr_unsigned(NFSCREATE_UNCHECKED); 1950 nfscl_fillsattr(nd, vap, dvp, 0, 0); 1951 } 1952 } else { 1953 nfscl_fillsattr(nd, vap, dvp, NFSSATTR_SIZE0, 0); 1954 } 1955 error = nfscl_request(nd, dvp, p, cred, dstuff); 1956 if (error) 1957 return (error); 1958 if (nd->nd_repstat == 0) { 1959 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp); 1960 if (error) 1961 goto nfsmout; 1962 } 1963 if (nd->nd_flag & ND_NFSV3) 1964 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 1965 if (nd->nd_repstat != 0 && error == 0) 1966 error = nd->nd_repstat; 1967 nfsmout: 1968 mbuf_freem(nd->nd_mrep); 1969 return (error); 1970 } 1971 1972 static int 1973 nfsrpc_createv4(vnode_t dvp, char *name, int namelen, struct vattr *vap, 1974 nfsquad_t cverf, int fmode, struct nfsclowner *owp, struct nfscldeleg **dpp, 1975 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap, 1976 struct nfsvattr *nnap, struct nfsfh **nfhpp, int *attrflagp, 1977 int *dattrflagp, void *dstuff, int *unlockedp) 1978 { 1979 u_int32_t *tl; 1980 int error = 0, deleg, newone, ret, acesize, limitby; 1981 struct nfsrv_descript nfsd, *nd = &nfsd; 1982 struct nfsclopen *op; 1983 struct nfscldeleg *dp = NULL; 1984 struct nfsnode *np; 1985 struct nfsfh *nfhp; 1986 nfsattrbit_t attrbits; 1987 nfsv4stateid_t stateid; 1988 u_int32_t rflags; 1989 struct nfsmount *nmp; 1990 struct nfsclsession *tsep; 1991 1992 nmp = VFSTONFS(dvp->v_mount); 1993 np = VTONFS(dvp); 1994 *unlockedp = 0; 1995 *nfhpp = NULL; 1996 *dpp = NULL; 1997 *attrflagp = 0; 1998 *dattrflagp = 0; 1999 if (namelen > NFS_MAXNAMLEN) 2000 return (ENAMETOOLONG); 2001 NFSCL_REQSTART(nd, NFSPROC_CREATE, dvp); 2002 /* 2003 * For V4, this is actually an Open op. 2004 */ 2005 NFSM_BUILD(tl, u_int32_t *, 5 * NFSX_UNSIGNED); 2006 *tl++ = txdr_unsigned(owp->nfsow_seqid); 2007 *tl++ = txdr_unsigned(NFSV4OPEN_ACCESSWRITE | 2008 NFSV4OPEN_ACCESSREAD); 2009 *tl++ = txdr_unsigned(NFSV4OPEN_DENYNONE); 2010 tsep = nfsmnt_mdssession(nmp); 2011 *tl++ = tsep->nfsess_clientid.lval[0]; 2012 *tl = tsep->nfsess_clientid.lval[1]; 2013 (void) nfsm_strtom(nd, owp->nfsow_owner, NFSV4CL_LOCKNAMELEN); 2014 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2015 *tl++ = txdr_unsigned(NFSV4OPEN_CREATE); 2016 if (fmode & O_EXCL) { 2017 if (NFSHASNFSV4N(nmp)) { 2018 if (NFSHASSESSPERSIST(nmp)) { 2019 /* Use GUARDED for persistent sessions. */ 2020 *tl = txdr_unsigned(NFSCREATE_GUARDED); 2021 nfscl_fillsattr(nd, vap, dvp, 0, 0); 2022 } else { 2023 /* Otherwise, use EXCLUSIVE4_1. */ 2024 *tl = txdr_unsigned(NFSCREATE_EXCLUSIVE41); 2025 NFSM_BUILD(tl, u_int32_t *, NFSX_VERF); 2026 *tl++ = cverf.lval[0]; 2027 *tl = cverf.lval[1]; 2028 nfscl_fillsattr(nd, vap, dvp, 0, 0); 2029 } 2030 } else { 2031 /* NFSv4.0 */ 2032 *tl = txdr_unsigned(NFSCREATE_EXCLUSIVE); 2033 NFSM_BUILD(tl, u_int32_t *, NFSX_VERF); 2034 *tl++ = cverf.lval[0]; 2035 *tl = cverf.lval[1]; 2036 } 2037 } else { 2038 *tl = txdr_unsigned(NFSCREATE_UNCHECKED); 2039 nfscl_fillsattr(nd, vap, dvp, 0, 0); 2040 } 2041 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2042 *tl = txdr_unsigned(NFSV4OPEN_CLAIMNULL); 2043 (void) nfsm_strtom(nd, name, namelen); 2044 /* Get the new file's handle and attributes. */ 2045 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2046 *tl++ = txdr_unsigned(NFSV4OP_GETFH); 2047 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2048 NFSGETATTR_ATTRBIT(&attrbits); 2049 (void) nfsrv_putattrbit(nd, &attrbits); 2050 /* Get the directory's post-op attributes. */ 2051 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2052 *tl = txdr_unsigned(NFSV4OP_PUTFH); 2053 (void) nfsm_fhtom(nd, np->n_fhp->nfh_fh, np->n_fhp->nfh_len, 0); 2054 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2055 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2056 (void) nfsrv_putattrbit(nd, &attrbits); 2057 error = nfscl_request(nd, dvp, p, cred, dstuff); 2058 if (error) 2059 return (error); 2060 NFSCL_INCRSEQID(owp->nfsow_seqid, nd); 2061 if (nd->nd_repstat == 0) { 2062 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID + 2063 6 * NFSX_UNSIGNED); 2064 stateid.seqid = *tl++; 2065 stateid.other[0] = *tl++; 2066 stateid.other[1] = *tl++; 2067 stateid.other[2] = *tl; 2068 rflags = fxdr_unsigned(u_int32_t, *(tl + 6)); 2069 (void) nfsrv_getattrbits(nd, &attrbits, NULL, NULL); 2070 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2071 deleg = fxdr_unsigned(int, *tl); 2072 if (deleg == NFSV4OPEN_DELEGATEREAD || 2073 deleg == NFSV4OPEN_DELEGATEWRITE) { 2074 if (!(owp->nfsow_clp->nfsc_flags & 2075 NFSCLFLAGS_FIRSTDELEG)) 2076 owp->nfsow_clp->nfsc_flags |= 2077 (NFSCLFLAGS_FIRSTDELEG | NFSCLFLAGS_GOTDELEG); 2078 MALLOC(dp, struct nfscldeleg *, 2079 sizeof (struct nfscldeleg) + NFSX_V4FHMAX, 2080 M_NFSCLDELEG, M_WAITOK); 2081 LIST_INIT(&dp->nfsdl_owner); 2082 LIST_INIT(&dp->nfsdl_lock); 2083 dp->nfsdl_clp = owp->nfsow_clp; 2084 newnfs_copyincred(cred, &dp->nfsdl_cred); 2085 nfscl_lockinit(&dp->nfsdl_rwlock); 2086 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID + 2087 NFSX_UNSIGNED); 2088 dp->nfsdl_stateid.seqid = *tl++; 2089 dp->nfsdl_stateid.other[0] = *tl++; 2090 dp->nfsdl_stateid.other[1] = *tl++; 2091 dp->nfsdl_stateid.other[2] = *tl++; 2092 ret = fxdr_unsigned(int, *tl); 2093 if (deleg == NFSV4OPEN_DELEGATEWRITE) { 2094 dp->nfsdl_flags = NFSCLDL_WRITE; 2095 /* 2096 * Indicates how much the file can grow. 2097 */ 2098 NFSM_DISSECT(tl, u_int32_t *, 2099 3 * NFSX_UNSIGNED); 2100 limitby = fxdr_unsigned(int, *tl++); 2101 switch (limitby) { 2102 case NFSV4OPEN_LIMITSIZE: 2103 dp->nfsdl_sizelimit = fxdr_hyper(tl); 2104 break; 2105 case NFSV4OPEN_LIMITBLOCKS: 2106 dp->nfsdl_sizelimit = 2107 fxdr_unsigned(u_int64_t, *tl++); 2108 dp->nfsdl_sizelimit *= 2109 fxdr_unsigned(u_int64_t, *tl); 2110 break; 2111 default: 2112 error = NFSERR_BADXDR; 2113 goto nfsmout; 2114 } 2115 } else { 2116 dp->nfsdl_flags = NFSCLDL_READ; 2117 } 2118 if (ret) 2119 dp->nfsdl_flags |= NFSCLDL_RECALL; 2120 error = nfsrv_dissectace(nd, &dp->nfsdl_ace, &ret, 2121 &acesize, p); 2122 if (error) 2123 goto nfsmout; 2124 } else if (deleg != NFSV4OPEN_DELEGATENONE) { 2125 error = NFSERR_BADXDR; 2126 goto nfsmout; 2127 } 2128 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp); 2129 if (error) 2130 goto nfsmout; 2131 /* Get rid of the PutFH and Getattr status values. */ 2132 NFSM_DISSECT(tl, u_int32_t *, 4 * NFSX_UNSIGNED); 2133 /* Load the directory attributes. */ 2134 error = nfsm_loadattr(nd, dnap); 2135 if (error) 2136 goto nfsmout; 2137 *dattrflagp = 1; 2138 if (dp != NULL && *attrflagp) { 2139 dp->nfsdl_change = nnap->na_filerev; 2140 dp->nfsdl_modtime = nnap->na_mtime; 2141 dp->nfsdl_flags |= NFSCLDL_MODTIMESET; 2142 } 2143 /* 2144 * We can now complete the Open state. 2145 */ 2146 nfhp = *nfhpp; 2147 if (dp != NULL) { 2148 dp->nfsdl_fhlen = nfhp->nfh_len; 2149 NFSBCOPY(nfhp->nfh_fh, dp->nfsdl_fh, nfhp->nfh_len); 2150 } 2151 /* 2152 * Get an Open structure that will be 2153 * attached to the OpenOwner, acquired already. 2154 */ 2155 error = nfscl_open(dvp, nfhp->nfh_fh, nfhp->nfh_len, 2156 (NFSV4OPEN_ACCESSWRITE | NFSV4OPEN_ACCESSREAD), 0, 2157 cred, p, NULL, &op, &newone, NULL, 0); 2158 if (error) 2159 goto nfsmout; 2160 op->nfso_stateid = stateid; 2161 newnfs_copyincred(cred, &op->nfso_cred); 2162 if ((rflags & NFSV4OPEN_RESULTCONFIRM)) { 2163 do { 2164 ret = nfsrpc_openconfirm(dvp, nfhp->nfh_fh, 2165 nfhp->nfh_len, op, cred, p); 2166 if (ret == NFSERR_DELAY) 2167 (void) nfs_catnap(PZERO, ret, "nfs_create"); 2168 } while (ret == NFSERR_DELAY); 2169 error = ret; 2170 } 2171 2172 /* 2173 * If the server is handing out delegations, but we didn't 2174 * get one because an OpenConfirm was required, try the 2175 * Open again, to get a delegation. This is a harmless no-op, 2176 * from a server's point of view. 2177 */ 2178 if ((rflags & NFSV4OPEN_RESULTCONFIRM) && 2179 (owp->nfsow_clp->nfsc_flags & NFSCLFLAGS_GOTDELEG) && 2180 !error && dp == NULL) { 2181 do { 2182 ret = nfsrpc_openrpc(VFSTONFS(vnode_mount(dvp)), dvp, 2183 np->n_fhp->nfh_fh, np->n_fhp->nfh_len, 2184 nfhp->nfh_fh, nfhp->nfh_len, 2185 (NFSV4OPEN_ACCESSWRITE | NFSV4OPEN_ACCESSREAD), op, 2186 name, namelen, &dp, 0, 0x0, cred, p, 0, 1); 2187 if (ret == NFSERR_DELAY) 2188 (void) nfs_catnap(PZERO, ret, "nfs_crt2"); 2189 } while (ret == NFSERR_DELAY); 2190 if (ret) { 2191 if (dp != NULL) { 2192 FREE((caddr_t)dp, M_NFSCLDELEG); 2193 dp = NULL; 2194 } 2195 if (ret == NFSERR_STALECLIENTID || 2196 ret == NFSERR_STALEDONTRECOVER || 2197 ret == NFSERR_BADSESSION) 2198 error = ret; 2199 } 2200 } 2201 nfscl_openrelease(op, error, newone); 2202 *unlockedp = 1; 2203 } 2204 if (nd->nd_repstat != 0 && error == 0) 2205 error = nd->nd_repstat; 2206 if (error == NFSERR_STALECLIENTID) 2207 nfscl_initiate_recovery(owp->nfsow_clp); 2208 nfsmout: 2209 if (!error) 2210 *dpp = dp; 2211 else if (dp != NULL) 2212 FREE((caddr_t)dp, M_NFSCLDELEG); 2213 mbuf_freem(nd->nd_mrep); 2214 return (error); 2215 } 2216 2217 /* 2218 * Nfs remove rpc 2219 */ 2220 APPLESTATIC int 2221 nfsrpc_remove(vnode_t dvp, char *name, int namelen, vnode_t vp, 2222 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap, int *dattrflagp, 2223 void *dstuff) 2224 { 2225 u_int32_t *tl; 2226 struct nfsrv_descript nfsd, *nd = &nfsd; 2227 struct nfsnode *np; 2228 struct nfsmount *nmp; 2229 nfsv4stateid_t dstateid; 2230 int error, ret = 0, i; 2231 2232 *dattrflagp = 0; 2233 if (namelen > NFS_MAXNAMLEN) 2234 return (ENAMETOOLONG); 2235 nmp = VFSTONFS(vnode_mount(dvp)); 2236 tryagain: 2237 if (NFSHASNFSV4(nmp) && ret == 0) { 2238 ret = nfscl_removedeleg(vp, p, &dstateid); 2239 if (ret == 1) { 2240 NFSCL_REQSTART(nd, NFSPROC_RETDELEGREMOVE, vp); 2241 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID + 2242 NFSX_UNSIGNED); 2243 if (NFSHASNFSV4N(nmp)) 2244 *tl++ = 0; 2245 else 2246 *tl++ = dstateid.seqid; 2247 *tl++ = dstateid.other[0]; 2248 *tl++ = dstateid.other[1]; 2249 *tl++ = dstateid.other[2]; 2250 *tl = txdr_unsigned(NFSV4OP_PUTFH); 2251 np = VTONFS(dvp); 2252 (void) nfsm_fhtom(nd, np->n_fhp->nfh_fh, 2253 np->n_fhp->nfh_len, 0); 2254 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2255 *tl = txdr_unsigned(NFSV4OP_REMOVE); 2256 } 2257 } else { 2258 ret = 0; 2259 } 2260 if (ret == 0) 2261 NFSCL_REQSTART(nd, NFSPROC_REMOVE, dvp); 2262 (void) nfsm_strtom(nd, name, namelen); 2263 error = nfscl_request(nd, dvp, p, cred, dstuff); 2264 if (error) 2265 return (error); 2266 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) { 2267 /* For NFSv4, parse out any Delereturn replies. */ 2268 if (ret > 0 && nd->nd_repstat != 0 && 2269 (nd->nd_flag & ND_NOMOREDATA)) { 2270 /* 2271 * If the Delegreturn failed, try again without 2272 * it. The server will Recall, as required. 2273 */ 2274 mbuf_freem(nd->nd_mrep); 2275 goto tryagain; 2276 } 2277 for (i = 0; i < (ret * 2); i++) { 2278 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == 2279 ND_NFSV4) { 2280 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2281 if (*(tl + 1)) 2282 nd->nd_flag |= ND_NOMOREDATA; 2283 } 2284 } 2285 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 2286 } 2287 if (nd->nd_repstat && !error) 2288 error = nd->nd_repstat; 2289 nfsmout: 2290 mbuf_freem(nd->nd_mrep); 2291 return (error); 2292 } 2293 2294 /* 2295 * Do an nfs rename rpc. 2296 */ 2297 APPLESTATIC int 2298 nfsrpc_rename(vnode_t fdvp, vnode_t fvp, char *fnameptr, int fnamelen, 2299 vnode_t tdvp, vnode_t tvp, char *tnameptr, int tnamelen, struct ucred *cred, 2300 NFSPROC_T *p, struct nfsvattr *fnap, struct nfsvattr *tnap, 2301 int *fattrflagp, int *tattrflagp, void *fstuff, void *tstuff) 2302 { 2303 u_int32_t *tl; 2304 struct nfsrv_descript nfsd, *nd = &nfsd; 2305 struct nfsmount *nmp; 2306 struct nfsnode *np; 2307 nfsattrbit_t attrbits; 2308 nfsv4stateid_t fdstateid, tdstateid; 2309 int error = 0, ret = 0, gottd = 0, gotfd = 0, i; 2310 2311 *fattrflagp = 0; 2312 *tattrflagp = 0; 2313 nmp = VFSTONFS(vnode_mount(fdvp)); 2314 if (fnamelen > NFS_MAXNAMLEN || tnamelen > NFS_MAXNAMLEN) 2315 return (ENAMETOOLONG); 2316 tryagain: 2317 if (NFSHASNFSV4(nmp) && ret == 0) { 2318 ret = nfscl_renamedeleg(fvp, &fdstateid, &gotfd, tvp, 2319 &tdstateid, &gottd, p); 2320 if (gotfd && gottd) { 2321 NFSCL_REQSTART(nd, NFSPROC_RETDELEGRENAME2, fvp); 2322 } else if (gotfd) { 2323 NFSCL_REQSTART(nd, NFSPROC_RETDELEGRENAME1, fvp); 2324 } else if (gottd) { 2325 NFSCL_REQSTART(nd, NFSPROC_RETDELEGRENAME1, tvp); 2326 } 2327 if (gotfd) { 2328 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID); 2329 if (NFSHASNFSV4N(nmp)) 2330 *tl++ = 0; 2331 else 2332 *tl++ = fdstateid.seqid; 2333 *tl++ = fdstateid.other[0]; 2334 *tl++ = fdstateid.other[1]; 2335 *tl = fdstateid.other[2]; 2336 if (gottd) { 2337 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2338 *tl = txdr_unsigned(NFSV4OP_PUTFH); 2339 np = VTONFS(tvp); 2340 (void) nfsm_fhtom(nd, np->n_fhp->nfh_fh, 2341 np->n_fhp->nfh_len, 0); 2342 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2343 *tl = txdr_unsigned(NFSV4OP_DELEGRETURN); 2344 } 2345 } 2346 if (gottd) { 2347 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID); 2348 if (NFSHASNFSV4N(nmp)) 2349 *tl++ = 0; 2350 else 2351 *tl++ = tdstateid.seqid; 2352 *tl++ = tdstateid.other[0]; 2353 *tl++ = tdstateid.other[1]; 2354 *tl = tdstateid.other[2]; 2355 } 2356 if (ret > 0) { 2357 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2358 *tl = txdr_unsigned(NFSV4OP_PUTFH); 2359 np = VTONFS(fdvp); 2360 (void) nfsm_fhtom(nd, np->n_fhp->nfh_fh, 2361 np->n_fhp->nfh_len, 0); 2362 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2363 *tl = txdr_unsigned(NFSV4OP_SAVEFH); 2364 } 2365 } else { 2366 ret = 0; 2367 } 2368 if (ret == 0) 2369 NFSCL_REQSTART(nd, NFSPROC_RENAME, fdvp); 2370 if (nd->nd_flag & ND_NFSV4) { 2371 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2372 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2373 NFSWCCATTR_ATTRBIT(&attrbits); 2374 (void) nfsrv_putattrbit(nd, &attrbits); 2375 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2376 *tl = txdr_unsigned(NFSV4OP_PUTFH); 2377 (void) nfsm_fhtom(nd, VTONFS(tdvp)->n_fhp->nfh_fh, 2378 VTONFS(tdvp)->n_fhp->nfh_len, 0); 2379 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2380 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2381 (void) nfsrv_putattrbit(nd, &attrbits); 2382 nd->nd_flag |= ND_V4WCCATTR; 2383 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2384 *tl = txdr_unsigned(NFSV4OP_RENAME); 2385 } 2386 (void) nfsm_strtom(nd, fnameptr, fnamelen); 2387 if (!(nd->nd_flag & ND_NFSV4)) 2388 (void) nfsm_fhtom(nd, VTONFS(tdvp)->n_fhp->nfh_fh, 2389 VTONFS(tdvp)->n_fhp->nfh_len, 0); 2390 (void) nfsm_strtom(nd, tnameptr, tnamelen); 2391 error = nfscl_request(nd, fdvp, p, cred, fstuff); 2392 if (error) 2393 return (error); 2394 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) { 2395 /* For NFSv4, parse out any Delereturn replies. */ 2396 if (ret > 0 && nd->nd_repstat != 0 && 2397 (nd->nd_flag & ND_NOMOREDATA)) { 2398 /* 2399 * If the Delegreturn failed, try again without 2400 * it. The server will Recall, as required. 2401 */ 2402 mbuf_freem(nd->nd_mrep); 2403 goto tryagain; 2404 } 2405 for (i = 0; i < (ret * 2); i++) { 2406 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == 2407 ND_NFSV4) { 2408 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2409 if (*(tl + 1)) { 2410 if (i == 0 && ret > 1) { 2411 /* 2412 * If the Delegreturn failed, try again 2413 * without it. The server will Recall, as 2414 * required. 2415 * If ret > 1, the first iteration of this 2416 * loop is the second DelegReturn result. 2417 */ 2418 mbuf_freem(nd->nd_mrep); 2419 goto tryagain; 2420 } else { 2421 nd->nd_flag |= ND_NOMOREDATA; 2422 } 2423 } 2424 } 2425 } 2426 /* Now, the first wcc attribute reply. */ 2427 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == ND_NFSV4) { 2428 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2429 if (*(tl + 1)) 2430 nd->nd_flag |= ND_NOMOREDATA; 2431 } 2432 error = nfscl_wcc_data(nd, fdvp, fnap, fattrflagp, NULL, 2433 fstuff); 2434 /* and the second wcc attribute reply. */ 2435 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == ND_NFSV4 && 2436 !error) { 2437 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2438 if (*(tl + 1)) 2439 nd->nd_flag |= ND_NOMOREDATA; 2440 } 2441 if (!error) 2442 error = nfscl_wcc_data(nd, tdvp, tnap, tattrflagp, 2443 NULL, tstuff); 2444 } 2445 if (nd->nd_repstat && !error) 2446 error = nd->nd_repstat; 2447 nfsmout: 2448 mbuf_freem(nd->nd_mrep); 2449 return (error); 2450 } 2451 2452 /* 2453 * nfs hard link create rpc 2454 */ 2455 APPLESTATIC int 2456 nfsrpc_link(vnode_t dvp, vnode_t vp, char *name, int namelen, 2457 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap, 2458 struct nfsvattr *nap, int *attrflagp, int *dattrflagp, void *dstuff) 2459 { 2460 u_int32_t *tl; 2461 struct nfsrv_descript nfsd, *nd = &nfsd; 2462 nfsattrbit_t attrbits; 2463 int error = 0; 2464 2465 *attrflagp = 0; 2466 *dattrflagp = 0; 2467 if (namelen > NFS_MAXNAMLEN) 2468 return (ENAMETOOLONG); 2469 NFSCL_REQSTART(nd, NFSPROC_LINK, vp); 2470 if (nd->nd_flag & ND_NFSV4) { 2471 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2472 *tl = txdr_unsigned(NFSV4OP_PUTFH); 2473 } 2474 (void) nfsm_fhtom(nd, VTONFS(dvp)->n_fhp->nfh_fh, 2475 VTONFS(dvp)->n_fhp->nfh_len, 0); 2476 if (nd->nd_flag & ND_NFSV4) { 2477 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2478 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2479 NFSWCCATTR_ATTRBIT(&attrbits); 2480 (void) nfsrv_putattrbit(nd, &attrbits); 2481 nd->nd_flag |= ND_V4WCCATTR; 2482 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2483 *tl = txdr_unsigned(NFSV4OP_LINK); 2484 } 2485 (void) nfsm_strtom(nd, name, namelen); 2486 error = nfscl_request(nd, vp, p, cred, dstuff); 2487 if (error) 2488 return (error); 2489 if (nd->nd_flag & ND_NFSV3) { 2490 error = nfscl_postop_attr(nd, nap, attrflagp, dstuff); 2491 if (!error) 2492 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, 2493 NULL, dstuff); 2494 } else if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == ND_NFSV4) { 2495 /* 2496 * First, parse out the PutFH and Getattr result. 2497 */ 2498 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2499 if (!(*(tl + 1))) 2500 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2501 if (*(tl + 1)) 2502 nd->nd_flag |= ND_NOMOREDATA; 2503 /* 2504 * Get the pre-op attributes. 2505 */ 2506 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 2507 } 2508 if (nd->nd_repstat && !error) 2509 error = nd->nd_repstat; 2510 nfsmout: 2511 mbuf_freem(nd->nd_mrep); 2512 return (error); 2513 } 2514 2515 /* 2516 * nfs symbolic link create rpc 2517 */ 2518 APPLESTATIC int 2519 nfsrpc_symlink(vnode_t dvp, char *name, int namelen, char *target, 2520 struct vattr *vap, struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap, 2521 struct nfsvattr *nnap, struct nfsfh **nfhpp, int *attrflagp, 2522 int *dattrflagp, void *dstuff) 2523 { 2524 u_int32_t *tl; 2525 struct nfsrv_descript nfsd, *nd = &nfsd; 2526 struct nfsmount *nmp; 2527 int slen, error = 0; 2528 2529 *nfhpp = NULL; 2530 *attrflagp = 0; 2531 *dattrflagp = 0; 2532 nmp = VFSTONFS(vnode_mount(dvp)); 2533 slen = strlen(target); 2534 if (slen > NFS_MAXPATHLEN || namelen > NFS_MAXNAMLEN) 2535 return (ENAMETOOLONG); 2536 NFSCL_REQSTART(nd, NFSPROC_SYMLINK, dvp); 2537 if (nd->nd_flag & ND_NFSV4) { 2538 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2539 *tl = txdr_unsigned(NFLNK); 2540 (void) nfsm_strtom(nd, target, slen); 2541 } 2542 (void) nfsm_strtom(nd, name, namelen); 2543 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) 2544 nfscl_fillsattr(nd, vap, dvp, 0, 0); 2545 if (!(nd->nd_flag & ND_NFSV4)) 2546 (void) nfsm_strtom(nd, target, slen); 2547 if (nd->nd_flag & ND_NFSV2) 2548 nfscl_fillsattr(nd, vap, dvp, NFSSATTR_SIZENEG1, 0); 2549 error = nfscl_request(nd, dvp, p, cred, dstuff); 2550 if (error) 2551 return (error); 2552 if (nd->nd_flag & ND_NFSV4) 2553 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 2554 if ((nd->nd_flag & ND_NFSV3) && !error) { 2555 if (!nd->nd_repstat) 2556 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp); 2557 if (!error) 2558 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, 2559 NULL, dstuff); 2560 } 2561 if (nd->nd_repstat && !error) 2562 error = nd->nd_repstat; 2563 mbuf_freem(nd->nd_mrep); 2564 /* 2565 * Kludge: Map EEXIST => 0 assuming that it is a reply to a retry. 2566 * Only do this if vfs.nfs.ignore_eexist is set. 2567 * Never do this for NFSv4.1 or later minor versions, since sessions 2568 * should guarantee "exactly once" RPC semantics. 2569 */ 2570 if (error == EEXIST && nfsignore_eexist != 0 && (!NFSHASNFSV4(nmp) || 2571 nmp->nm_minorvers == 0)) 2572 error = 0; 2573 return (error); 2574 } 2575 2576 /* 2577 * nfs make dir rpc 2578 */ 2579 APPLESTATIC int 2580 nfsrpc_mkdir(vnode_t dvp, char *name, int namelen, struct vattr *vap, 2581 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap, 2582 struct nfsvattr *nnap, struct nfsfh **nfhpp, int *attrflagp, 2583 int *dattrflagp, void *dstuff) 2584 { 2585 u_int32_t *tl; 2586 struct nfsrv_descript nfsd, *nd = &nfsd; 2587 nfsattrbit_t attrbits; 2588 int error = 0; 2589 struct nfsfh *fhp; 2590 struct nfsmount *nmp; 2591 2592 *nfhpp = NULL; 2593 *attrflagp = 0; 2594 *dattrflagp = 0; 2595 nmp = VFSTONFS(vnode_mount(dvp)); 2596 fhp = VTONFS(dvp)->n_fhp; 2597 if (namelen > NFS_MAXNAMLEN) 2598 return (ENAMETOOLONG); 2599 NFSCL_REQSTART(nd, NFSPROC_MKDIR, dvp); 2600 if (nd->nd_flag & ND_NFSV4) { 2601 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2602 *tl = txdr_unsigned(NFDIR); 2603 } 2604 (void) nfsm_strtom(nd, name, namelen); 2605 nfscl_fillsattr(nd, vap, dvp, NFSSATTR_SIZENEG1, 0); 2606 if (nd->nd_flag & ND_NFSV4) { 2607 NFSGETATTR_ATTRBIT(&attrbits); 2608 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2609 *tl++ = txdr_unsigned(NFSV4OP_GETFH); 2610 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2611 (void) nfsrv_putattrbit(nd, &attrbits); 2612 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2613 *tl = txdr_unsigned(NFSV4OP_PUTFH); 2614 (void) nfsm_fhtom(nd, fhp->nfh_fh, fhp->nfh_len, 0); 2615 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2616 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2617 (void) nfsrv_putattrbit(nd, &attrbits); 2618 } 2619 error = nfscl_request(nd, dvp, p, cred, dstuff); 2620 if (error) 2621 return (error); 2622 if (nd->nd_flag & ND_NFSV4) 2623 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 2624 if (!nd->nd_repstat && !error) { 2625 if (nd->nd_flag & ND_NFSV4) { 2626 NFSM_DISSECT(tl, u_int32_t *, 5 * NFSX_UNSIGNED); 2627 error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL); 2628 } 2629 if (!error) 2630 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp); 2631 if (error == 0 && (nd->nd_flag & ND_NFSV4) != 0) { 2632 /* Get rid of the PutFH and Getattr status values. */ 2633 NFSM_DISSECT(tl, u_int32_t *, 4 * NFSX_UNSIGNED); 2634 /* Load the directory attributes. */ 2635 error = nfsm_loadattr(nd, dnap); 2636 if (error == 0) 2637 *dattrflagp = 1; 2638 } 2639 } 2640 if ((nd->nd_flag & ND_NFSV3) && !error) 2641 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 2642 if (nd->nd_repstat && !error) 2643 error = nd->nd_repstat; 2644 nfsmout: 2645 mbuf_freem(nd->nd_mrep); 2646 /* 2647 * Kludge: Map EEXIST => 0 assuming that it is a reply to a retry. 2648 * Only do this if vfs.nfs.ignore_eexist is set. 2649 * Never do this for NFSv4.1 or later minor versions, since sessions 2650 * should guarantee "exactly once" RPC semantics. 2651 */ 2652 if (error == EEXIST && nfsignore_eexist != 0 && (!NFSHASNFSV4(nmp) || 2653 nmp->nm_minorvers == 0)) 2654 error = 0; 2655 return (error); 2656 } 2657 2658 /* 2659 * nfs remove directory call 2660 */ 2661 APPLESTATIC int 2662 nfsrpc_rmdir(vnode_t dvp, char *name, int namelen, struct ucred *cred, 2663 NFSPROC_T *p, struct nfsvattr *dnap, int *dattrflagp, void *dstuff) 2664 { 2665 struct nfsrv_descript nfsd, *nd = &nfsd; 2666 int error = 0; 2667 2668 *dattrflagp = 0; 2669 if (namelen > NFS_MAXNAMLEN) 2670 return (ENAMETOOLONG); 2671 NFSCL_REQSTART(nd, NFSPROC_RMDIR, dvp); 2672 (void) nfsm_strtom(nd, name, namelen); 2673 error = nfscl_request(nd, dvp, p, cred, dstuff); 2674 if (error) 2675 return (error); 2676 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) 2677 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 2678 if (nd->nd_repstat && !error) 2679 error = nd->nd_repstat; 2680 mbuf_freem(nd->nd_mrep); 2681 /* 2682 * Kludge: Map ENOENT => 0 assuming that you have a reply to a retry. 2683 */ 2684 if (error == ENOENT) 2685 error = 0; 2686 return (error); 2687 } 2688 2689 /* 2690 * Readdir rpc. 2691 * Always returns with either uio_resid unchanged, if you are at the 2692 * end of the directory, or uio_resid == 0, with all DIRBLKSIZ chunks 2693 * filled in. 2694 * I felt this would allow caching of directory blocks more easily 2695 * than returning a pertially filled block. 2696 * Directory offset cookies: 2697 * Oh my, what to do with them... 2698 * I can think of three ways to deal with them: 2699 * 1 - have the layer above these RPCs maintain a map between logical 2700 * directory byte offsets and the NFS directory offset cookies 2701 * 2 - pass the opaque directory offset cookies up into userland 2702 * and let the libc functions deal with them, via the system call 2703 * 3 - return them to userland in the "struct dirent", so future versions 2704 * of libc can use them and do whatever is necessary to make things work 2705 * above these rpc calls, in the meantime 2706 * For now, I do #3 by "hiding" the directory offset cookies after the 2707 * d_name field in struct dirent. This is space inside d_reclen that 2708 * will be ignored by anything that doesn't know about them. 2709 * The directory offset cookies are filled in as the last 8 bytes of 2710 * each directory entry, after d_name. Someday, the userland libc 2711 * functions may be able to use these. In the meantime, it satisfies 2712 * OpenBSD's requirements for cookies being returned. 2713 * If expects the directory offset cookie for the read to be in uio_offset 2714 * and returns the one for the next entry after this directory block in 2715 * there, as well. 2716 */ 2717 APPLESTATIC int 2718 nfsrpc_readdir(vnode_t vp, struct uio *uiop, nfsuint64 *cookiep, 2719 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, 2720 int *eofp, void *stuff) 2721 { 2722 int len, left; 2723 struct dirent *dp = NULL; 2724 u_int32_t *tl; 2725 nfsquad_t cookie, ncookie; 2726 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 2727 struct nfsnode *dnp = VTONFS(vp); 2728 struct nfsvattr nfsva; 2729 struct nfsrv_descript nfsd, *nd = &nfsd; 2730 int error = 0, tlen, more_dirs = 1, blksiz = 0, bigenough = 1; 2731 int reqsize, tryformoredirs = 1, readsize, eof = 0, gotmnton = 0; 2732 long dotfileid, dotdotfileid = 0; 2733 u_int32_t fakefileno = 0xffffffff, rderr; 2734 char *cp; 2735 nfsattrbit_t attrbits, dattrbits; 2736 u_int32_t *tl2 = NULL; 2737 size_t tresid; 2738 2739 KASSERT(uiop->uio_iovcnt == 1 && 2740 (uio_uio_resid(uiop) & (DIRBLKSIZ - 1)) == 0, 2741 ("nfs readdirrpc bad uio")); 2742 2743 /* 2744 * There is no point in reading a lot more than uio_resid, however 2745 * adding one additional DIRBLKSIZ makes sense. Since uio_resid 2746 * and nm_readdirsize are both exact multiples of DIRBLKSIZ, this 2747 * will never make readsize > nm_readdirsize. 2748 */ 2749 readsize = nmp->nm_readdirsize; 2750 if (readsize > uio_uio_resid(uiop)) 2751 readsize = uio_uio_resid(uiop) + DIRBLKSIZ; 2752 2753 *attrflagp = 0; 2754 if (eofp) 2755 *eofp = 0; 2756 tresid = uio_uio_resid(uiop); 2757 cookie.lval[0] = cookiep->nfsuquad[0]; 2758 cookie.lval[1] = cookiep->nfsuquad[1]; 2759 nd->nd_mrep = NULL; 2760 2761 /* 2762 * For NFSv4, first create the "." and ".." entries. 2763 */ 2764 if (NFSHASNFSV4(nmp)) { 2765 reqsize = 6 * NFSX_UNSIGNED; 2766 NFSGETATTR_ATTRBIT(&dattrbits); 2767 NFSZERO_ATTRBIT(&attrbits); 2768 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_FILEID); 2769 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_TYPE); 2770 if (NFSISSET_ATTRBIT(&dnp->n_vattr.na_suppattr, 2771 NFSATTRBIT_MOUNTEDONFILEID)) { 2772 NFSSETBIT_ATTRBIT(&attrbits, 2773 NFSATTRBIT_MOUNTEDONFILEID); 2774 gotmnton = 1; 2775 } else { 2776 /* 2777 * Must fake it. Use the fileno, except when the 2778 * fsid is != to that of the directory. For that 2779 * case, generate a fake fileno that is not the same. 2780 */ 2781 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_FSID); 2782 gotmnton = 0; 2783 } 2784 2785 /* 2786 * Joy, oh joy. For V4 we get to hand craft '.' and '..'. 2787 */ 2788 if (uiop->uio_offset == 0) { 2789 NFSCL_REQSTART(nd, NFSPROC_LOOKUPP, vp); 2790 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2791 *tl++ = txdr_unsigned(NFSV4OP_GETFH); 2792 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2793 (void) nfsrv_putattrbit(nd, &attrbits); 2794 error = nfscl_request(nd, vp, p, cred, stuff); 2795 if (error) 2796 return (error); 2797 dotfileid = 0; /* Fake out the compiler. */ 2798 if ((nd->nd_flag & ND_NOMOREDATA) == 0) { 2799 error = nfsm_loadattr(nd, &nfsva); 2800 if (error != 0) 2801 goto nfsmout; 2802 dotfileid = nfsva.na_fileid; 2803 } 2804 if (nd->nd_repstat == 0) { 2805 NFSM_DISSECT(tl, u_int32_t *, 5 * NFSX_UNSIGNED); 2806 len = fxdr_unsigned(int, *(tl + 4)); 2807 if (len > 0 && len <= NFSX_V4FHMAX) 2808 error = nfsm_advance(nd, NFSM_RNDUP(len), -1); 2809 else 2810 error = EPERM; 2811 if (!error) { 2812 NFSM_DISSECT(tl, u_int32_t *, 2*NFSX_UNSIGNED); 2813 nfsva.na_mntonfileno = 0xffffffff; 2814 error = nfsv4_loadattr(nd, NULL, &nfsva, NULL, 2815 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0, 2816 NULL, NULL, NULL, p, cred); 2817 if (error) { 2818 dotdotfileid = dotfileid; 2819 } else if (gotmnton) { 2820 if (nfsva.na_mntonfileno != 0xffffffff) 2821 dotdotfileid = nfsva.na_mntonfileno; 2822 else 2823 dotdotfileid = nfsva.na_fileid; 2824 } else if (nfsva.na_filesid[0] == 2825 dnp->n_vattr.na_filesid[0] && 2826 nfsva.na_filesid[1] == 2827 dnp->n_vattr.na_filesid[1]) { 2828 dotdotfileid = nfsva.na_fileid; 2829 } else { 2830 do { 2831 fakefileno--; 2832 } while (fakefileno == 2833 nfsva.na_fileid); 2834 dotdotfileid = fakefileno; 2835 } 2836 } 2837 } else if (nd->nd_repstat == NFSERR_NOENT) { 2838 /* 2839 * Lookupp returns NFSERR_NOENT when we are 2840 * at the root, so just use the current dir. 2841 */ 2842 nd->nd_repstat = 0; 2843 dotdotfileid = dotfileid; 2844 } else { 2845 error = nd->nd_repstat; 2846 } 2847 mbuf_freem(nd->nd_mrep); 2848 if (error) 2849 return (error); 2850 nd->nd_mrep = NULL; 2851 dp = (struct dirent *) CAST_DOWN(caddr_t, uio_iov_base(uiop)); 2852 dp->d_type = DT_DIR; 2853 dp->d_fileno = dotfileid; 2854 dp->d_namlen = 1; 2855 dp->d_name[0] = '.'; 2856 dp->d_name[1] = '\0'; 2857 dp->d_reclen = DIRENT_SIZE(dp) + NFSX_HYPER; 2858 /* 2859 * Just make these offset cookie 0. 2860 */ 2861 tl = (u_int32_t *)&dp->d_name[4]; 2862 *tl++ = 0; 2863 *tl = 0; 2864 blksiz += dp->d_reclen; 2865 uio_uio_resid_add(uiop, -(dp->d_reclen)); 2866 uiop->uio_offset += dp->d_reclen; 2867 uio_iov_base_add(uiop, dp->d_reclen); 2868 uio_iov_len_add(uiop, -(dp->d_reclen)); 2869 dp = (struct dirent *) CAST_DOWN(caddr_t, uio_iov_base(uiop)); 2870 dp->d_type = DT_DIR; 2871 dp->d_fileno = dotdotfileid; 2872 dp->d_namlen = 2; 2873 dp->d_name[0] = '.'; 2874 dp->d_name[1] = '.'; 2875 dp->d_name[2] = '\0'; 2876 dp->d_reclen = DIRENT_SIZE(dp) + NFSX_HYPER; 2877 /* 2878 * Just make these offset cookie 0. 2879 */ 2880 tl = (u_int32_t *)&dp->d_name[4]; 2881 *tl++ = 0; 2882 *tl = 0; 2883 blksiz += dp->d_reclen; 2884 uio_uio_resid_add(uiop, -(dp->d_reclen)); 2885 uiop->uio_offset += dp->d_reclen; 2886 uio_iov_base_add(uiop, dp->d_reclen); 2887 uio_iov_len_add(uiop, -(dp->d_reclen)); 2888 } 2889 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_RDATTRERROR); 2890 } else { 2891 reqsize = 5 * NFSX_UNSIGNED; 2892 } 2893 2894 2895 /* 2896 * Loop around doing readdir rpc's of size readsize. 2897 * The stopping criteria is EOF or buffer full. 2898 */ 2899 while (more_dirs && bigenough) { 2900 *attrflagp = 0; 2901 NFSCL_REQSTART(nd, NFSPROC_READDIR, vp); 2902 if (nd->nd_flag & ND_NFSV2) { 2903 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2904 *tl++ = cookie.lval[1]; 2905 *tl = txdr_unsigned(readsize); 2906 } else { 2907 NFSM_BUILD(tl, u_int32_t *, reqsize); 2908 *tl++ = cookie.lval[0]; 2909 *tl++ = cookie.lval[1]; 2910 if (cookie.qval == 0) { 2911 *tl++ = 0; 2912 *tl++ = 0; 2913 } else { 2914 NFSLOCKNODE(dnp); 2915 *tl++ = dnp->n_cookieverf.nfsuquad[0]; 2916 *tl++ = dnp->n_cookieverf.nfsuquad[1]; 2917 NFSUNLOCKNODE(dnp); 2918 } 2919 if (nd->nd_flag & ND_NFSV4) { 2920 *tl++ = txdr_unsigned(readsize); 2921 *tl = txdr_unsigned(readsize); 2922 (void) nfsrv_putattrbit(nd, &attrbits); 2923 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2924 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2925 (void) nfsrv_putattrbit(nd, &dattrbits); 2926 } else { 2927 *tl = txdr_unsigned(readsize); 2928 } 2929 } 2930 error = nfscl_request(nd, vp, p, cred, stuff); 2931 if (error) 2932 return (error); 2933 if (!(nd->nd_flag & ND_NFSV2)) { 2934 if (nd->nd_flag & ND_NFSV3) 2935 error = nfscl_postop_attr(nd, nap, attrflagp, 2936 stuff); 2937 if (!nd->nd_repstat && !error) { 2938 NFSM_DISSECT(tl, u_int32_t *, NFSX_HYPER); 2939 NFSLOCKNODE(dnp); 2940 dnp->n_cookieverf.nfsuquad[0] = *tl++; 2941 dnp->n_cookieverf.nfsuquad[1] = *tl; 2942 NFSUNLOCKNODE(dnp); 2943 } 2944 } 2945 if (nd->nd_repstat || error) { 2946 if (!error) 2947 error = nd->nd_repstat; 2948 goto nfsmout; 2949 } 2950 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2951 more_dirs = fxdr_unsigned(int, *tl); 2952 if (!more_dirs) 2953 tryformoredirs = 0; 2954 2955 /* loop through the dir entries, doctoring them to 4bsd form */ 2956 while (more_dirs && bigenough) { 2957 if (nd->nd_flag & ND_NFSV4) { 2958 NFSM_DISSECT(tl, u_int32_t *, 3*NFSX_UNSIGNED); 2959 ncookie.lval[0] = *tl++; 2960 ncookie.lval[1] = *tl++; 2961 len = fxdr_unsigned(int, *tl); 2962 } else if (nd->nd_flag & ND_NFSV3) { 2963 NFSM_DISSECT(tl, u_int32_t *, 3*NFSX_UNSIGNED); 2964 nfsva.na_fileid = fxdr_hyper(tl); 2965 tl += 2; 2966 len = fxdr_unsigned(int, *tl); 2967 } else { 2968 NFSM_DISSECT(tl, u_int32_t *, 2*NFSX_UNSIGNED); 2969 nfsva.na_fileid = 2970 fxdr_unsigned(long, *tl++); 2971 len = fxdr_unsigned(int, *tl); 2972 } 2973 if (len <= 0 || len > NFS_MAXNAMLEN) { 2974 error = EBADRPC; 2975 goto nfsmout; 2976 } 2977 tlen = NFSM_RNDUP(len); 2978 if (tlen == len) 2979 tlen += 4; /* To ensure null termination */ 2980 left = DIRBLKSIZ - blksiz; 2981 if ((int)(tlen + DIRHDSIZ + NFSX_HYPER) > left) { 2982 dp->d_reclen += left; 2983 uio_iov_base_add(uiop, left); 2984 uio_iov_len_add(uiop, -(left)); 2985 uio_uio_resid_add(uiop, -(left)); 2986 uiop->uio_offset += left; 2987 blksiz = 0; 2988 } 2989 if ((int)(tlen + DIRHDSIZ + NFSX_HYPER) > uio_uio_resid(uiop)) 2990 bigenough = 0; 2991 if (bigenough) { 2992 dp = (struct dirent *) CAST_DOWN(caddr_t, uio_iov_base(uiop)); 2993 dp->d_namlen = len; 2994 dp->d_reclen = tlen + DIRHDSIZ + NFSX_HYPER; 2995 dp->d_type = DT_UNKNOWN; 2996 blksiz += dp->d_reclen; 2997 if (blksiz == DIRBLKSIZ) 2998 blksiz = 0; 2999 uio_uio_resid_add(uiop, -(DIRHDSIZ)); 3000 uiop->uio_offset += DIRHDSIZ; 3001 uio_iov_base_add(uiop, DIRHDSIZ); 3002 uio_iov_len_add(uiop, -(DIRHDSIZ)); 3003 error = nfsm_mbufuio(nd, uiop, len); 3004 if (error) 3005 goto nfsmout; 3006 cp = CAST_DOWN(caddr_t, uio_iov_base(uiop)); 3007 tlen -= len; 3008 *cp = '\0'; /* null terminate */ 3009 cp += tlen; /* points to cookie storage */ 3010 tl2 = (u_int32_t *)cp; 3011 uio_iov_base_add(uiop, (tlen + NFSX_HYPER)); 3012 uio_iov_len_add(uiop, -(tlen + NFSX_HYPER)); 3013 uio_uio_resid_add(uiop, -(tlen + NFSX_HYPER)); 3014 uiop->uio_offset += (tlen + NFSX_HYPER); 3015 } else { 3016 error = nfsm_advance(nd, NFSM_RNDUP(len), -1); 3017 if (error) 3018 goto nfsmout; 3019 } 3020 if (nd->nd_flag & ND_NFSV4) { 3021 rderr = 0; 3022 nfsva.na_mntonfileno = 0xffffffff; 3023 error = nfsv4_loadattr(nd, NULL, &nfsva, NULL, 3024 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0, 3025 NULL, NULL, &rderr, p, cred); 3026 if (error) 3027 goto nfsmout; 3028 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 3029 } else if (nd->nd_flag & ND_NFSV3) { 3030 NFSM_DISSECT(tl, u_int32_t *, 3*NFSX_UNSIGNED); 3031 ncookie.lval[0] = *tl++; 3032 ncookie.lval[1] = *tl++; 3033 } else { 3034 NFSM_DISSECT(tl, u_int32_t *, 2*NFSX_UNSIGNED); 3035 ncookie.lval[0] = 0; 3036 ncookie.lval[1] = *tl++; 3037 } 3038 if (bigenough) { 3039 if (nd->nd_flag & ND_NFSV4) { 3040 if (rderr) { 3041 dp->d_fileno = 0; 3042 } else { 3043 if (gotmnton) { 3044 if (nfsva.na_mntonfileno != 0xffffffff) 3045 dp->d_fileno = nfsva.na_mntonfileno; 3046 else 3047 dp->d_fileno = nfsva.na_fileid; 3048 } else if (nfsva.na_filesid[0] == 3049 dnp->n_vattr.na_filesid[0] && 3050 nfsva.na_filesid[1] == 3051 dnp->n_vattr.na_filesid[1]) { 3052 dp->d_fileno = nfsva.na_fileid; 3053 } else { 3054 do { 3055 fakefileno--; 3056 } while (fakefileno == 3057 nfsva.na_fileid); 3058 dp->d_fileno = fakefileno; 3059 } 3060 dp->d_type = vtonfs_dtype(nfsva.na_type); 3061 } 3062 } else { 3063 dp->d_fileno = nfsva.na_fileid; 3064 } 3065 *tl2++ = cookiep->nfsuquad[0] = cookie.lval[0] = 3066 ncookie.lval[0]; 3067 *tl2 = cookiep->nfsuquad[1] = cookie.lval[1] = 3068 ncookie.lval[1]; 3069 } 3070 more_dirs = fxdr_unsigned(int, *tl); 3071 } 3072 /* 3073 * If at end of rpc data, get the eof boolean 3074 */ 3075 if (!more_dirs) { 3076 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 3077 eof = fxdr_unsigned(int, *tl); 3078 if (tryformoredirs) 3079 more_dirs = !eof; 3080 if (nd->nd_flag & ND_NFSV4) { 3081 error = nfscl_postop_attr(nd, nap, attrflagp, 3082 stuff); 3083 if (error) 3084 goto nfsmout; 3085 } 3086 } 3087 mbuf_freem(nd->nd_mrep); 3088 nd->nd_mrep = NULL; 3089 } 3090 /* 3091 * Fill last record, iff any, out to a multiple of DIRBLKSIZ 3092 * by increasing d_reclen for the last record. 3093 */ 3094 if (blksiz > 0) { 3095 left = DIRBLKSIZ - blksiz; 3096 dp->d_reclen += left; 3097 uio_iov_base_add(uiop, left); 3098 uio_iov_len_add(uiop, -(left)); 3099 uio_uio_resid_add(uiop, -(left)); 3100 uiop->uio_offset += left; 3101 } 3102 3103 /* 3104 * If returning no data, assume end of file. 3105 * If not bigenough, return not end of file, since you aren't 3106 * returning all the data 3107 * Otherwise, return the eof flag from the server. 3108 */ 3109 if (eofp) { 3110 if (tresid == ((size_t)(uio_uio_resid(uiop)))) 3111 *eofp = 1; 3112 else if (!bigenough) 3113 *eofp = 0; 3114 else 3115 *eofp = eof; 3116 } 3117 3118 /* 3119 * Add extra empty records to any remaining DIRBLKSIZ chunks. 3120 */ 3121 while (uio_uio_resid(uiop) > 0 && ((size_t)(uio_uio_resid(uiop))) != tresid) { 3122 dp = (struct dirent *) CAST_DOWN(caddr_t, uio_iov_base(uiop)); 3123 dp->d_type = DT_UNKNOWN; 3124 dp->d_fileno = 0; 3125 dp->d_namlen = 0; 3126 dp->d_name[0] = '\0'; 3127 tl = (u_int32_t *)&dp->d_name[4]; 3128 *tl++ = cookie.lval[0]; 3129 *tl = cookie.lval[1]; 3130 dp->d_reclen = DIRBLKSIZ; 3131 uio_iov_base_add(uiop, DIRBLKSIZ); 3132 uio_iov_len_add(uiop, -(DIRBLKSIZ)); 3133 uio_uio_resid_add(uiop, -(DIRBLKSIZ)); 3134 uiop->uio_offset += DIRBLKSIZ; 3135 } 3136 3137 nfsmout: 3138 if (nd->nd_mrep != NULL) 3139 mbuf_freem(nd->nd_mrep); 3140 return (error); 3141 } 3142 3143 #ifndef APPLE 3144 /* 3145 * NFS V3 readdir plus RPC. Used in place of nfsrpc_readdir(). 3146 * (Also used for NFS V4 when mount flag set.) 3147 * (ditto above w.r.t. multiple of DIRBLKSIZ, etc.) 3148 */ 3149 APPLESTATIC int 3150 nfsrpc_readdirplus(vnode_t vp, struct uio *uiop, nfsuint64 *cookiep, 3151 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, 3152 int *eofp, void *stuff) 3153 { 3154 int len, left; 3155 struct dirent *dp = NULL; 3156 u_int32_t *tl; 3157 vnode_t newvp = NULLVP; 3158 struct nfsrv_descript nfsd, *nd = &nfsd; 3159 struct nameidata nami, *ndp = &nami; 3160 struct componentname *cnp = &ndp->ni_cnd; 3161 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 3162 struct nfsnode *dnp = VTONFS(vp), *np; 3163 struct nfsvattr nfsva; 3164 struct nfsfh *nfhp; 3165 nfsquad_t cookie, ncookie; 3166 int error = 0, tlen, more_dirs = 1, blksiz = 0, bigenough = 1; 3167 int attrflag, tryformoredirs = 1, eof = 0, gotmnton = 0; 3168 int isdotdot = 0, unlocknewvp = 0; 3169 long dotfileid, dotdotfileid = 0, fileno = 0; 3170 char *cp; 3171 nfsattrbit_t attrbits, dattrbits; 3172 size_t tresid; 3173 u_int32_t *tl2 = NULL, fakefileno = 0xffffffff, rderr; 3174 struct timespec dctime; 3175 3176 KASSERT(uiop->uio_iovcnt == 1 && 3177 (uio_uio_resid(uiop) & (DIRBLKSIZ - 1)) == 0, 3178 ("nfs readdirplusrpc bad uio")); 3179 timespecclear(&dctime); 3180 *attrflagp = 0; 3181 if (eofp != NULL) 3182 *eofp = 0; 3183 ndp->ni_dvp = vp; 3184 nd->nd_mrep = NULL; 3185 cookie.lval[0] = cookiep->nfsuquad[0]; 3186 cookie.lval[1] = cookiep->nfsuquad[1]; 3187 tresid = uio_uio_resid(uiop); 3188 3189 /* 3190 * For NFSv4, first create the "." and ".." entries. 3191 */ 3192 if (NFSHASNFSV4(nmp)) { 3193 NFSGETATTR_ATTRBIT(&dattrbits); 3194 NFSZERO_ATTRBIT(&attrbits); 3195 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_FILEID); 3196 if (NFSISSET_ATTRBIT(&dnp->n_vattr.na_suppattr, 3197 NFSATTRBIT_MOUNTEDONFILEID)) { 3198 NFSSETBIT_ATTRBIT(&attrbits, 3199 NFSATTRBIT_MOUNTEDONFILEID); 3200 gotmnton = 1; 3201 } else { 3202 /* 3203 * Must fake it. Use the fileno, except when the 3204 * fsid is != to that of the directory. For that 3205 * case, generate a fake fileno that is not the same. 3206 */ 3207 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_FSID); 3208 gotmnton = 0; 3209 } 3210 3211 /* 3212 * Joy, oh joy. For V4 we get to hand craft '.' and '..'. 3213 */ 3214 if (uiop->uio_offset == 0) { 3215 NFSCL_REQSTART(nd, NFSPROC_LOOKUPP, vp); 3216 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 3217 *tl++ = txdr_unsigned(NFSV4OP_GETFH); 3218 *tl = txdr_unsigned(NFSV4OP_GETATTR); 3219 (void) nfsrv_putattrbit(nd, &attrbits); 3220 error = nfscl_request(nd, vp, p, cred, stuff); 3221 if (error) 3222 return (error); 3223 dotfileid = 0; /* Fake out the compiler. */ 3224 if ((nd->nd_flag & ND_NOMOREDATA) == 0) { 3225 error = nfsm_loadattr(nd, &nfsva); 3226 if (error != 0) 3227 goto nfsmout; 3228 dctime = nfsva.na_ctime; 3229 dotfileid = nfsva.na_fileid; 3230 } 3231 if (nd->nd_repstat == 0) { 3232 NFSM_DISSECT(tl, u_int32_t *, 5 * NFSX_UNSIGNED); 3233 len = fxdr_unsigned(int, *(tl + 4)); 3234 if (len > 0 && len <= NFSX_V4FHMAX) 3235 error = nfsm_advance(nd, NFSM_RNDUP(len), -1); 3236 else 3237 error = EPERM; 3238 if (!error) { 3239 NFSM_DISSECT(tl, u_int32_t *, 2*NFSX_UNSIGNED); 3240 nfsva.na_mntonfileno = 0xffffffff; 3241 error = nfsv4_loadattr(nd, NULL, &nfsva, NULL, 3242 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0, 3243 NULL, NULL, NULL, p, cred); 3244 if (error) { 3245 dotdotfileid = dotfileid; 3246 } else if (gotmnton) { 3247 if (nfsva.na_mntonfileno != 0xffffffff) 3248 dotdotfileid = nfsva.na_mntonfileno; 3249 else 3250 dotdotfileid = nfsva.na_fileid; 3251 } else if (nfsva.na_filesid[0] == 3252 dnp->n_vattr.na_filesid[0] && 3253 nfsva.na_filesid[1] == 3254 dnp->n_vattr.na_filesid[1]) { 3255 dotdotfileid = nfsva.na_fileid; 3256 } else { 3257 do { 3258 fakefileno--; 3259 } while (fakefileno == 3260 nfsva.na_fileid); 3261 dotdotfileid = fakefileno; 3262 } 3263 } 3264 } else if (nd->nd_repstat == NFSERR_NOENT) { 3265 /* 3266 * Lookupp returns NFSERR_NOENT when we are 3267 * at the root, so just use the current dir. 3268 */ 3269 nd->nd_repstat = 0; 3270 dotdotfileid = dotfileid; 3271 } else { 3272 error = nd->nd_repstat; 3273 } 3274 mbuf_freem(nd->nd_mrep); 3275 if (error) 3276 return (error); 3277 nd->nd_mrep = NULL; 3278 dp = (struct dirent *)uio_iov_base(uiop); 3279 dp->d_type = DT_DIR; 3280 dp->d_fileno = dotfileid; 3281 dp->d_namlen = 1; 3282 dp->d_name[0] = '.'; 3283 dp->d_name[1] = '\0'; 3284 dp->d_reclen = DIRENT_SIZE(dp) + NFSX_HYPER; 3285 /* 3286 * Just make these offset cookie 0. 3287 */ 3288 tl = (u_int32_t *)&dp->d_name[4]; 3289 *tl++ = 0; 3290 *tl = 0; 3291 blksiz += dp->d_reclen; 3292 uio_uio_resid_add(uiop, -(dp->d_reclen)); 3293 uiop->uio_offset += dp->d_reclen; 3294 uio_iov_base_add(uiop, dp->d_reclen); 3295 uio_iov_len_add(uiop, -(dp->d_reclen)); 3296 dp = (struct dirent *)uio_iov_base(uiop); 3297 dp->d_type = DT_DIR; 3298 dp->d_fileno = dotdotfileid; 3299 dp->d_namlen = 2; 3300 dp->d_name[0] = '.'; 3301 dp->d_name[1] = '.'; 3302 dp->d_name[2] = '\0'; 3303 dp->d_reclen = DIRENT_SIZE(dp) + NFSX_HYPER; 3304 /* 3305 * Just make these offset cookie 0. 3306 */ 3307 tl = (u_int32_t *)&dp->d_name[4]; 3308 *tl++ = 0; 3309 *tl = 0; 3310 blksiz += dp->d_reclen; 3311 uio_uio_resid_add(uiop, -(dp->d_reclen)); 3312 uiop->uio_offset += dp->d_reclen; 3313 uio_iov_base_add(uiop, dp->d_reclen); 3314 uio_iov_len_add(uiop, -(dp->d_reclen)); 3315 } 3316 NFSREADDIRPLUS_ATTRBIT(&attrbits); 3317 if (gotmnton) 3318 NFSSETBIT_ATTRBIT(&attrbits, 3319 NFSATTRBIT_MOUNTEDONFILEID); 3320 } 3321 3322 /* 3323 * Loop around doing readdir rpc's of size nm_readdirsize. 3324 * The stopping criteria is EOF or buffer full. 3325 */ 3326 while (more_dirs && bigenough) { 3327 *attrflagp = 0; 3328 NFSCL_REQSTART(nd, NFSPROC_READDIRPLUS, vp); 3329 NFSM_BUILD(tl, u_int32_t *, 6 * NFSX_UNSIGNED); 3330 *tl++ = cookie.lval[0]; 3331 *tl++ = cookie.lval[1]; 3332 if (cookie.qval == 0) { 3333 *tl++ = 0; 3334 *tl++ = 0; 3335 } else { 3336 NFSLOCKNODE(dnp); 3337 *tl++ = dnp->n_cookieverf.nfsuquad[0]; 3338 *tl++ = dnp->n_cookieverf.nfsuquad[1]; 3339 NFSUNLOCKNODE(dnp); 3340 } 3341 *tl++ = txdr_unsigned(nmp->nm_readdirsize); 3342 *tl = txdr_unsigned(nmp->nm_readdirsize); 3343 if (nd->nd_flag & ND_NFSV4) { 3344 (void) nfsrv_putattrbit(nd, &attrbits); 3345 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 3346 *tl = txdr_unsigned(NFSV4OP_GETATTR); 3347 (void) nfsrv_putattrbit(nd, &dattrbits); 3348 } 3349 error = nfscl_request(nd, vp, p, cred, stuff); 3350 if (error) 3351 return (error); 3352 if (nd->nd_flag & ND_NFSV3) 3353 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 3354 if (nd->nd_repstat || error) { 3355 if (!error) 3356 error = nd->nd_repstat; 3357 goto nfsmout; 3358 } 3359 if ((nd->nd_flag & ND_NFSV3) != 0 && *attrflagp != 0) 3360 dctime = nap->na_ctime; 3361 NFSM_DISSECT(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 3362 NFSLOCKNODE(dnp); 3363 dnp->n_cookieverf.nfsuquad[0] = *tl++; 3364 dnp->n_cookieverf.nfsuquad[1] = *tl++; 3365 NFSUNLOCKNODE(dnp); 3366 more_dirs = fxdr_unsigned(int, *tl); 3367 if (!more_dirs) 3368 tryformoredirs = 0; 3369 3370 /* loop through the dir entries, doctoring them to 4bsd form */ 3371 while (more_dirs && bigenough) { 3372 NFSM_DISSECT(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 3373 if (nd->nd_flag & ND_NFSV4) { 3374 ncookie.lval[0] = *tl++; 3375 ncookie.lval[1] = *tl++; 3376 } else { 3377 fileno = fxdr_unsigned(long, *++tl); 3378 tl++; 3379 } 3380 len = fxdr_unsigned(int, *tl); 3381 if (len <= 0 || len > NFS_MAXNAMLEN) { 3382 error = EBADRPC; 3383 goto nfsmout; 3384 } 3385 tlen = NFSM_RNDUP(len); 3386 if (tlen == len) 3387 tlen += 4; /* To ensure null termination */ 3388 left = DIRBLKSIZ - blksiz; 3389 if ((tlen + DIRHDSIZ + NFSX_HYPER) > left) { 3390 dp->d_reclen += left; 3391 uio_iov_base_add(uiop, left); 3392 uio_iov_len_add(uiop, -(left)); 3393 uio_uio_resid_add(uiop, -(left)); 3394 uiop->uio_offset += left; 3395 blksiz = 0; 3396 } 3397 if ((tlen + DIRHDSIZ + NFSX_HYPER) > uio_uio_resid(uiop)) 3398 bigenough = 0; 3399 if (bigenough) { 3400 dp = (struct dirent *)uio_iov_base(uiop); 3401 dp->d_namlen = len; 3402 dp->d_reclen = tlen + DIRHDSIZ + NFSX_HYPER; 3403 dp->d_type = DT_UNKNOWN; 3404 blksiz += dp->d_reclen; 3405 if (blksiz == DIRBLKSIZ) 3406 blksiz = 0; 3407 uio_uio_resid_add(uiop, -(DIRHDSIZ)); 3408 uiop->uio_offset += DIRHDSIZ; 3409 uio_iov_base_add(uiop, DIRHDSIZ); 3410 uio_iov_len_add(uiop, -(DIRHDSIZ)); 3411 cnp->cn_nameptr = uio_iov_base(uiop); 3412 cnp->cn_namelen = len; 3413 NFSCNHASHZERO(cnp); 3414 error = nfsm_mbufuio(nd, uiop, len); 3415 if (error) 3416 goto nfsmout; 3417 cp = uio_iov_base(uiop); 3418 tlen -= len; 3419 *cp = '\0'; 3420 cp += tlen; /* points to cookie storage */ 3421 tl2 = (u_int32_t *)cp; 3422 if (len == 2 && cnp->cn_nameptr[0] == '.' && 3423 cnp->cn_nameptr[1] == '.') 3424 isdotdot = 1; 3425 else 3426 isdotdot = 0; 3427 uio_iov_base_add(uiop, (tlen + NFSX_HYPER)); 3428 uio_iov_len_add(uiop, -(tlen + NFSX_HYPER)); 3429 uio_uio_resid_add(uiop, -(tlen + NFSX_HYPER)); 3430 uiop->uio_offset += (tlen + NFSX_HYPER); 3431 } else { 3432 error = nfsm_advance(nd, NFSM_RNDUP(len), -1); 3433 if (error) 3434 goto nfsmout; 3435 } 3436 nfhp = NULL; 3437 if (nd->nd_flag & ND_NFSV3) { 3438 NFSM_DISSECT(tl, u_int32_t *, 3*NFSX_UNSIGNED); 3439 ncookie.lval[0] = *tl++; 3440 ncookie.lval[1] = *tl++; 3441 attrflag = fxdr_unsigned(int, *tl); 3442 if (attrflag) { 3443 error = nfsm_loadattr(nd, &nfsva); 3444 if (error) 3445 goto nfsmout; 3446 } 3447 NFSM_DISSECT(tl,u_int32_t *,NFSX_UNSIGNED); 3448 if (*tl) { 3449 error = nfsm_getfh(nd, &nfhp); 3450 if (error) 3451 goto nfsmout; 3452 } 3453 if (!attrflag && nfhp != NULL) { 3454 FREE((caddr_t)nfhp, M_NFSFH); 3455 nfhp = NULL; 3456 } 3457 } else { 3458 rderr = 0; 3459 nfsva.na_mntonfileno = 0xffffffff; 3460 error = nfsv4_loadattr(nd, NULL, &nfsva, &nfhp, 3461 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0, 3462 NULL, NULL, &rderr, p, cred); 3463 if (error) 3464 goto nfsmout; 3465 } 3466 3467 if (bigenough) { 3468 if (nd->nd_flag & ND_NFSV4) { 3469 if (rderr) { 3470 dp->d_fileno = 0; 3471 } else if (gotmnton) { 3472 if (nfsva.na_mntonfileno != 0xffffffff) 3473 dp->d_fileno = nfsva.na_mntonfileno; 3474 else 3475 dp->d_fileno = nfsva.na_fileid; 3476 } else if (nfsva.na_filesid[0] == 3477 dnp->n_vattr.na_filesid[0] && 3478 nfsva.na_filesid[1] == 3479 dnp->n_vattr.na_filesid[1]) { 3480 dp->d_fileno = nfsva.na_fileid; 3481 } else { 3482 do { 3483 fakefileno--; 3484 } while (fakefileno == 3485 nfsva.na_fileid); 3486 dp->d_fileno = fakefileno; 3487 } 3488 } else { 3489 dp->d_fileno = fileno; 3490 } 3491 *tl2++ = cookiep->nfsuquad[0] = cookie.lval[0] = 3492 ncookie.lval[0]; 3493 *tl2 = cookiep->nfsuquad[1] = cookie.lval[1] = 3494 ncookie.lval[1]; 3495 3496 if (nfhp != NULL) { 3497 if (NFSRV_CMPFH(nfhp->nfh_fh, nfhp->nfh_len, 3498 dnp->n_fhp->nfh_fh, dnp->n_fhp->nfh_len)) { 3499 VREF(vp); 3500 newvp = vp; 3501 unlocknewvp = 0; 3502 FREE((caddr_t)nfhp, M_NFSFH); 3503 np = dnp; 3504 } else if (isdotdot != 0) { 3505 /* 3506 * Skip doing a nfscl_nget() call for "..". 3507 * There's a race between acquiring the nfs 3508 * node here and lookups that look for the 3509 * directory being read (in the parent). 3510 * It would try to get a lock on ".." here, 3511 * owning the lock on the directory being 3512 * read. Lookup will hold the lock on ".." 3513 * and try to acquire the lock on the 3514 * directory being read. 3515 * If the directory is unlocked/relocked, 3516 * then there is a LOR with the buflock 3517 * vp is relocked. 3518 */ 3519 free(nfhp, M_NFSFH); 3520 } else { 3521 error = nfscl_nget(vnode_mount(vp), vp, 3522 nfhp, cnp, p, &np, NULL, LK_EXCLUSIVE); 3523 if (!error) { 3524 newvp = NFSTOV(np); 3525 unlocknewvp = 1; 3526 } 3527 } 3528 nfhp = NULL; 3529 if (newvp != NULLVP) { 3530 error = nfscl_loadattrcache(&newvp, 3531 &nfsva, NULL, NULL, 0, 0); 3532 if (error) { 3533 if (unlocknewvp) 3534 vput(newvp); 3535 else 3536 vrele(newvp); 3537 goto nfsmout; 3538 } 3539 dp->d_type = 3540 vtonfs_dtype(np->n_vattr.na_type); 3541 ndp->ni_vp = newvp; 3542 NFSCNHASH(cnp, HASHINIT); 3543 if (cnp->cn_namelen <= NCHNAMLEN && 3544 (newvp->v_type != VDIR || 3545 dctime.tv_sec != 0)) { 3546 cache_enter_time(ndp->ni_dvp, 3547 ndp->ni_vp, cnp, 3548 &nfsva.na_ctime, 3549 newvp->v_type != VDIR ? NULL : 3550 &dctime); 3551 } 3552 if (unlocknewvp) 3553 vput(newvp); 3554 else 3555 vrele(newvp); 3556 newvp = NULLVP; 3557 } 3558 } 3559 } else if (nfhp != NULL) { 3560 FREE((caddr_t)nfhp, M_NFSFH); 3561 } 3562 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 3563 more_dirs = fxdr_unsigned(int, *tl); 3564 } 3565 /* 3566 * If at end of rpc data, get the eof boolean 3567 */ 3568 if (!more_dirs) { 3569 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 3570 eof = fxdr_unsigned(int, *tl); 3571 if (tryformoredirs) 3572 more_dirs = !eof; 3573 if (nd->nd_flag & ND_NFSV4) { 3574 error = nfscl_postop_attr(nd, nap, attrflagp, 3575 stuff); 3576 if (error) 3577 goto nfsmout; 3578 } 3579 } 3580 mbuf_freem(nd->nd_mrep); 3581 nd->nd_mrep = NULL; 3582 } 3583 /* 3584 * Fill last record, iff any, out to a multiple of DIRBLKSIZ 3585 * by increasing d_reclen for the last record. 3586 */ 3587 if (blksiz > 0) { 3588 left = DIRBLKSIZ - blksiz; 3589 dp->d_reclen += left; 3590 uio_iov_base_add(uiop, left); 3591 uio_iov_len_add(uiop, -(left)); 3592 uio_uio_resid_add(uiop, -(left)); 3593 uiop->uio_offset += left; 3594 } 3595 3596 /* 3597 * If returning no data, assume end of file. 3598 * If not bigenough, return not end of file, since you aren't 3599 * returning all the data 3600 * Otherwise, return the eof flag from the server. 3601 */ 3602 if (eofp != NULL) { 3603 if (tresid == uio_uio_resid(uiop)) 3604 *eofp = 1; 3605 else if (!bigenough) 3606 *eofp = 0; 3607 else 3608 *eofp = eof; 3609 } 3610 3611 /* 3612 * Add extra empty records to any remaining DIRBLKSIZ chunks. 3613 */ 3614 while (uio_uio_resid(uiop) > 0 && uio_uio_resid(uiop) != tresid) { 3615 dp = (struct dirent *)uio_iov_base(uiop); 3616 dp->d_type = DT_UNKNOWN; 3617 dp->d_fileno = 0; 3618 dp->d_namlen = 0; 3619 dp->d_name[0] = '\0'; 3620 tl = (u_int32_t *)&dp->d_name[4]; 3621 *tl++ = cookie.lval[0]; 3622 *tl = cookie.lval[1]; 3623 dp->d_reclen = DIRBLKSIZ; 3624 uio_iov_base_add(uiop, DIRBLKSIZ); 3625 uio_iov_len_add(uiop, -(DIRBLKSIZ)); 3626 uio_uio_resid_add(uiop, -(DIRBLKSIZ)); 3627 uiop->uio_offset += DIRBLKSIZ; 3628 } 3629 3630 nfsmout: 3631 if (nd->nd_mrep != NULL) 3632 mbuf_freem(nd->nd_mrep); 3633 return (error); 3634 } 3635 #endif /* !APPLE */ 3636 3637 /* 3638 * Nfs commit rpc 3639 */ 3640 APPLESTATIC int 3641 nfsrpc_commit(vnode_t vp, u_quad_t offset, int cnt, struct ucred *cred, 3642 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff) 3643 { 3644 u_int32_t *tl; 3645 struct nfsrv_descript nfsd, *nd = &nfsd; 3646 nfsattrbit_t attrbits; 3647 int error; 3648 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 3649 3650 *attrflagp = 0; 3651 NFSCL_REQSTART(nd, NFSPROC_COMMIT, vp); 3652 NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 3653 txdr_hyper(offset, tl); 3654 tl += 2; 3655 *tl = txdr_unsigned(cnt); 3656 if (nd->nd_flag & ND_NFSV4) { 3657 /* 3658 * And do a Getattr op. 3659 */ 3660 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 3661 *tl = txdr_unsigned(NFSV4OP_GETATTR); 3662 NFSGETATTR_ATTRBIT(&attrbits); 3663 (void) nfsrv_putattrbit(nd, &attrbits); 3664 } 3665 error = nfscl_request(nd, vp, p, cred, stuff); 3666 if (error) 3667 return (error); 3668 error = nfscl_wcc_data(nd, vp, nap, attrflagp, NULL, stuff); 3669 if (!error && !nd->nd_repstat) { 3670 NFSM_DISSECT(tl, u_int32_t *, NFSX_VERF); 3671 NFSLOCKMNT(nmp); 3672 if (NFSBCMP(nmp->nm_verf, tl, NFSX_VERF)) { 3673 NFSBCOPY(tl, nmp->nm_verf, NFSX_VERF); 3674 nd->nd_repstat = NFSERR_STALEWRITEVERF; 3675 } 3676 NFSUNLOCKMNT(nmp); 3677 if (nd->nd_flag & ND_NFSV4) 3678 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 3679 } 3680 nfsmout: 3681 if (!error && nd->nd_repstat) 3682 error = nd->nd_repstat; 3683 mbuf_freem(nd->nd_mrep); 3684 return (error); 3685 } 3686 3687 /* 3688 * NFS byte range lock rpc. 3689 * (Mostly just calls one of the three lower level RPC routines.) 3690 */ 3691 APPLESTATIC int 3692 nfsrpc_advlock(vnode_t vp, off_t size, int op, struct flock *fl, 3693 int reclaim, struct ucred *cred, NFSPROC_T *p, void *id, int flags) 3694 { 3695 struct nfscllockowner *lp; 3696 struct nfsclclient *clp; 3697 struct nfsfh *nfhp; 3698 struct nfsrv_descript nfsd, *nd = &nfsd; 3699 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 3700 u_int64_t off, len; 3701 off_t start, end; 3702 u_int32_t clidrev = 0; 3703 int error = 0, newone = 0, expireret = 0, retrycnt, donelocally; 3704 int callcnt, dorpc; 3705 3706 /* 3707 * Convert the flock structure into a start and end and do POSIX 3708 * bounds checking. 3709 */ 3710 switch (fl->l_whence) { 3711 case SEEK_SET: 3712 case SEEK_CUR: 3713 /* 3714 * Caller is responsible for adding any necessary offset 3715 * when SEEK_CUR is used. 3716 */ 3717 start = fl->l_start; 3718 off = fl->l_start; 3719 break; 3720 case SEEK_END: 3721 start = size + fl->l_start; 3722 off = size + fl->l_start; 3723 break; 3724 default: 3725 return (EINVAL); 3726 } 3727 if (start < 0) 3728 return (EINVAL); 3729 if (fl->l_len != 0) { 3730 end = start + fl->l_len - 1; 3731 if (end < start) 3732 return (EINVAL); 3733 } 3734 3735 len = fl->l_len; 3736 if (len == 0) 3737 len = NFS64BITSSET; 3738 retrycnt = 0; 3739 do { 3740 nd->nd_repstat = 0; 3741 if (op == F_GETLK) { 3742 error = nfscl_getcl(vnode_mount(vp), cred, p, 1, &clp); 3743 if (error) 3744 return (error); 3745 error = nfscl_lockt(vp, clp, off, len, fl, p, id, flags); 3746 if (!error) { 3747 clidrev = clp->nfsc_clientidrev; 3748 error = nfsrpc_lockt(nd, vp, clp, off, len, fl, cred, 3749 p, id, flags); 3750 } else if (error == -1) { 3751 error = 0; 3752 } 3753 nfscl_clientrelease(clp); 3754 } else if (op == F_UNLCK && fl->l_type == F_UNLCK) { 3755 /* 3756 * We must loop around for all lockowner cases. 3757 */ 3758 callcnt = 0; 3759 error = nfscl_getcl(vnode_mount(vp), cred, p, 1, &clp); 3760 if (error) 3761 return (error); 3762 do { 3763 error = nfscl_relbytelock(vp, off, len, cred, p, callcnt, 3764 clp, id, flags, &lp, &dorpc); 3765 /* 3766 * If it returns a NULL lp, we're done. 3767 */ 3768 if (lp == NULL) { 3769 if (callcnt == 0) 3770 nfscl_clientrelease(clp); 3771 else 3772 nfscl_releasealllocks(clp, vp, p, id, flags); 3773 return (error); 3774 } 3775 if (nmp->nm_clp != NULL) 3776 clidrev = nmp->nm_clp->nfsc_clientidrev; 3777 else 3778 clidrev = 0; 3779 /* 3780 * If the server doesn't support Posix lock semantics, 3781 * only allow locks on the entire file, since it won't 3782 * handle overlapping byte ranges. 3783 * There might still be a problem when a lock 3784 * upgrade/downgrade (read<->write) occurs, since the 3785 * server "might" expect an unlock first? 3786 */ 3787 if (dorpc && (lp->nfsl_open->nfso_posixlock || 3788 (off == 0 && len == NFS64BITSSET))) { 3789 /* 3790 * Since the lock records will go away, we must 3791 * wait for grace and delay here. 3792 */ 3793 do { 3794 error = nfsrpc_locku(nd, nmp, lp, off, len, 3795 NFSV4LOCKT_READ, cred, p, 0); 3796 if ((nd->nd_repstat == NFSERR_GRACE || 3797 nd->nd_repstat == NFSERR_DELAY) && 3798 error == 0) 3799 (void) nfs_catnap(PZERO, (int)nd->nd_repstat, 3800 "nfs_advlock"); 3801 } while ((nd->nd_repstat == NFSERR_GRACE || 3802 nd->nd_repstat == NFSERR_DELAY) && error == 0); 3803 } 3804 callcnt++; 3805 } while (error == 0 && nd->nd_repstat == 0); 3806 nfscl_releasealllocks(clp, vp, p, id, flags); 3807 } else if (op == F_SETLK) { 3808 error = nfscl_getbytelock(vp, off, len, fl->l_type, cred, p, 3809 NULL, 0, id, flags, NULL, NULL, &lp, &newone, &donelocally); 3810 if (error || donelocally) { 3811 return (error); 3812 } 3813 if (nmp->nm_clp != NULL) 3814 clidrev = nmp->nm_clp->nfsc_clientidrev; 3815 else 3816 clidrev = 0; 3817 nfhp = VTONFS(vp)->n_fhp; 3818 if (!lp->nfsl_open->nfso_posixlock && 3819 (off != 0 || len != NFS64BITSSET)) { 3820 error = EINVAL; 3821 } else { 3822 error = nfsrpc_lock(nd, nmp, vp, nfhp->nfh_fh, 3823 nfhp->nfh_len, lp, newone, reclaim, off, 3824 len, fl->l_type, cred, p, 0); 3825 } 3826 if (!error) 3827 error = nd->nd_repstat; 3828 nfscl_lockrelease(lp, error, newone); 3829 } else { 3830 error = EINVAL; 3831 } 3832 if (!error) 3833 error = nd->nd_repstat; 3834 if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 3835 error == NFSERR_STALEDONTRECOVER || 3836 error == NFSERR_STALECLIENTID || error == NFSERR_DELAY || 3837 error == NFSERR_BADSESSION) { 3838 (void) nfs_catnap(PZERO, error, "nfs_advlock"); 3839 } else if ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) 3840 && clidrev != 0) { 3841 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p); 3842 retrycnt++; 3843 } 3844 } while (error == NFSERR_GRACE || 3845 error == NFSERR_STALECLIENTID || error == NFSERR_DELAY || 3846 error == NFSERR_STALEDONTRECOVER || error == NFSERR_STALESTATEID || 3847 error == NFSERR_BADSESSION || 3848 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) && 3849 expireret == 0 && clidrev != 0 && retrycnt < 4)); 3850 if (error && retrycnt >= 4) 3851 error = EIO; 3852 return (error); 3853 } 3854 3855 /* 3856 * The lower level routine for the LockT case. 3857 */ 3858 APPLESTATIC int 3859 nfsrpc_lockt(struct nfsrv_descript *nd, vnode_t vp, 3860 struct nfsclclient *clp, u_int64_t off, u_int64_t len, struct flock *fl, 3861 struct ucred *cred, NFSPROC_T *p, void *id, int flags) 3862 { 3863 u_int32_t *tl; 3864 int error, type, size; 3865 uint8_t own[NFSV4CL_LOCKNAMELEN + NFSX_V4FHMAX]; 3866 struct nfsnode *np; 3867 struct nfsmount *nmp; 3868 struct nfsclsession *tsep; 3869 3870 nmp = VFSTONFS(vp->v_mount); 3871 NFSCL_REQSTART(nd, NFSPROC_LOCKT, vp); 3872 NFSM_BUILD(tl, u_int32_t *, 7 * NFSX_UNSIGNED); 3873 if (fl->l_type == F_RDLCK) 3874 *tl++ = txdr_unsigned(NFSV4LOCKT_READ); 3875 else 3876 *tl++ = txdr_unsigned(NFSV4LOCKT_WRITE); 3877 txdr_hyper(off, tl); 3878 tl += 2; 3879 txdr_hyper(len, tl); 3880 tl += 2; 3881 tsep = nfsmnt_mdssession(nmp); 3882 *tl++ = tsep->nfsess_clientid.lval[0]; 3883 *tl = tsep->nfsess_clientid.lval[1]; 3884 nfscl_filllockowner(id, own, flags); 3885 np = VTONFS(vp); 3886 NFSBCOPY(np->n_fhp->nfh_fh, &own[NFSV4CL_LOCKNAMELEN], 3887 np->n_fhp->nfh_len); 3888 (void)nfsm_strtom(nd, own, NFSV4CL_LOCKNAMELEN + np->n_fhp->nfh_len); 3889 error = nfscl_request(nd, vp, p, cred, NULL); 3890 if (error) 3891 return (error); 3892 if (nd->nd_repstat == 0) { 3893 fl->l_type = F_UNLCK; 3894 } else if (nd->nd_repstat == NFSERR_DENIED) { 3895 nd->nd_repstat = 0; 3896 fl->l_whence = SEEK_SET; 3897 NFSM_DISSECT(tl, u_int32_t *, 8 * NFSX_UNSIGNED); 3898 fl->l_start = fxdr_hyper(tl); 3899 tl += 2; 3900 len = fxdr_hyper(tl); 3901 tl += 2; 3902 if (len == NFS64BITSSET) 3903 fl->l_len = 0; 3904 else 3905 fl->l_len = len; 3906 type = fxdr_unsigned(int, *tl++); 3907 if (type == NFSV4LOCKT_WRITE) 3908 fl->l_type = F_WRLCK; 3909 else 3910 fl->l_type = F_RDLCK; 3911 /* 3912 * XXX For now, I have no idea what to do with the 3913 * conflicting lock_owner, so I'll just set the pid == 0 3914 * and skip over the lock_owner. 3915 */ 3916 fl->l_pid = (pid_t)0; 3917 tl += 2; 3918 size = fxdr_unsigned(int, *tl); 3919 if (size < 0 || size > NFSV4_OPAQUELIMIT) 3920 error = EBADRPC; 3921 if (!error) 3922 error = nfsm_advance(nd, NFSM_RNDUP(size), -1); 3923 } else if (nd->nd_repstat == NFSERR_STALECLIENTID) 3924 nfscl_initiate_recovery(clp); 3925 nfsmout: 3926 mbuf_freem(nd->nd_mrep); 3927 return (error); 3928 } 3929 3930 /* 3931 * Lower level function that performs the LockU RPC. 3932 */ 3933 static int 3934 nfsrpc_locku(struct nfsrv_descript *nd, struct nfsmount *nmp, 3935 struct nfscllockowner *lp, u_int64_t off, u_int64_t len, 3936 u_int32_t type, struct ucred *cred, NFSPROC_T *p, int syscred) 3937 { 3938 u_int32_t *tl; 3939 int error; 3940 3941 nfscl_reqstart(nd, NFSPROC_LOCKU, nmp, lp->nfsl_open->nfso_fh, 3942 lp->nfsl_open->nfso_fhlen, NULL, NULL); 3943 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID + 6 * NFSX_UNSIGNED); 3944 *tl++ = txdr_unsigned(type); 3945 *tl = txdr_unsigned(lp->nfsl_seqid); 3946 if (nfstest_outofseq && 3947 (arc4random() % nfstest_outofseq) == 0) 3948 *tl = txdr_unsigned(lp->nfsl_seqid + 1); 3949 tl++; 3950 if (NFSHASNFSV4N(nmp)) 3951 *tl++ = 0; 3952 else 3953 *tl++ = lp->nfsl_stateid.seqid; 3954 *tl++ = lp->nfsl_stateid.other[0]; 3955 *tl++ = lp->nfsl_stateid.other[1]; 3956 *tl++ = lp->nfsl_stateid.other[2]; 3957 txdr_hyper(off, tl); 3958 tl += 2; 3959 txdr_hyper(len, tl); 3960 if (syscred) 3961 nd->nd_flag |= ND_USEGSSNAME; 3962 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 3963 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 3964 NFSCL_INCRSEQID(lp->nfsl_seqid, nd); 3965 if (error) 3966 return (error); 3967 if (nd->nd_repstat == 0) { 3968 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID); 3969 lp->nfsl_stateid.seqid = *tl++; 3970 lp->nfsl_stateid.other[0] = *tl++; 3971 lp->nfsl_stateid.other[1] = *tl++; 3972 lp->nfsl_stateid.other[2] = *tl; 3973 } else if (nd->nd_repstat == NFSERR_STALESTATEID) 3974 nfscl_initiate_recovery(lp->nfsl_open->nfso_own->nfsow_clp); 3975 nfsmout: 3976 mbuf_freem(nd->nd_mrep); 3977 return (error); 3978 } 3979 3980 /* 3981 * The actual Lock RPC. 3982 */ 3983 APPLESTATIC int 3984 nfsrpc_lock(struct nfsrv_descript *nd, struct nfsmount *nmp, vnode_t vp, 3985 u_int8_t *nfhp, int fhlen, struct nfscllockowner *lp, int newone, 3986 int reclaim, u_int64_t off, u_int64_t len, short type, struct ucred *cred, 3987 NFSPROC_T *p, int syscred) 3988 { 3989 u_int32_t *tl; 3990 int error, size; 3991 uint8_t own[NFSV4CL_LOCKNAMELEN + NFSX_V4FHMAX]; 3992 struct nfsclsession *tsep; 3993 3994 nfscl_reqstart(nd, NFSPROC_LOCK, nmp, nfhp, fhlen, NULL, NULL); 3995 NFSM_BUILD(tl, u_int32_t *, 7 * NFSX_UNSIGNED); 3996 if (type == F_RDLCK) 3997 *tl++ = txdr_unsigned(NFSV4LOCKT_READ); 3998 else 3999 *tl++ = txdr_unsigned(NFSV4LOCKT_WRITE); 4000 *tl++ = txdr_unsigned(reclaim); 4001 txdr_hyper(off, tl); 4002 tl += 2; 4003 txdr_hyper(len, tl); 4004 tl += 2; 4005 if (newone) { 4006 *tl = newnfs_true; 4007 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID + 4008 2 * NFSX_UNSIGNED + NFSX_HYPER); 4009 *tl++ = txdr_unsigned(lp->nfsl_open->nfso_own->nfsow_seqid); 4010 if (NFSHASNFSV4N(nmp)) 4011 *tl++ = 0; 4012 else 4013 *tl++ = lp->nfsl_open->nfso_stateid.seqid; 4014 *tl++ = lp->nfsl_open->nfso_stateid.other[0]; 4015 *tl++ = lp->nfsl_open->nfso_stateid.other[1]; 4016 *tl++ = lp->nfsl_open->nfso_stateid.other[2]; 4017 *tl++ = txdr_unsigned(lp->nfsl_seqid); 4018 tsep = nfsmnt_mdssession(nmp); 4019 *tl++ = tsep->nfsess_clientid.lval[0]; 4020 *tl = tsep->nfsess_clientid.lval[1]; 4021 NFSBCOPY(lp->nfsl_owner, own, NFSV4CL_LOCKNAMELEN); 4022 NFSBCOPY(nfhp, &own[NFSV4CL_LOCKNAMELEN], fhlen); 4023 (void)nfsm_strtom(nd, own, NFSV4CL_LOCKNAMELEN + fhlen); 4024 } else { 4025 *tl = newnfs_false; 4026 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID + NFSX_UNSIGNED); 4027 if (NFSHASNFSV4N(nmp)) 4028 *tl++ = 0; 4029 else 4030 *tl++ = lp->nfsl_stateid.seqid; 4031 *tl++ = lp->nfsl_stateid.other[0]; 4032 *tl++ = lp->nfsl_stateid.other[1]; 4033 *tl++ = lp->nfsl_stateid.other[2]; 4034 *tl = txdr_unsigned(lp->nfsl_seqid); 4035 if (nfstest_outofseq && 4036 (arc4random() % nfstest_outofseq) == 0) 4037 *tl = txdr_unsigned(lp->nfsl_seqid + 1); 4038 } 4039 if (syscred) 4040 nd->nd_flag |= ND_USEGSSNAME; 4041 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, vp, p, cred, 4042 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4043 if (error) 4044 return (error); 4045 if (newone) 4046 NFSCL_INCRSEQID(lp->nfsl_open->nfso_own->nfsow_seqid, nd); 4047 NFSCL_INCRSEQID(lp->nfsl_seqid, nd); 4048 if (nd->nd_repstat == 0) { 4049 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID); 4050 lp->nfsl_stateid.seqid = *tl++; 4051 lp->nfsl_stateid.other[0] = *tl++; 4052 lp->nfsl_stateid.other[1] = *tl++; 4053 lp->nfsl_stateid.other[2] = *tl; 4054 } else if (nd->nd_repstat == NFSERR_DENIED) { 4055 NFSM_DISSECT(tl, u_int32_t *, 8 * NFSX_UNSIGNED); 4056 size = fxdr_unsigned(int, *(tl + 7)); 4057 if (size < 0 || size > NFSV4_OPAQUELIMIT) 4058 error = EBADRPC; 4059 if (!error) 4060 error = nfsm_advance(nd, NFSM_RNDUP(size), -1); 4061 } else if (nd->nd_repstat == NFSERR_STALESTATEID) 4062 nfscl_initiate_recovery(lp->nfsl_open->nfso_own->nfsow_clp); 4063 nfsmout: 4064 mbuf_freem(nd->nd_mrep); 4065 return (error); 4066 } 4067 4068 /* 4069 * nfs statfs rpc 4070 * (always called with the vp for the mount point) 4071 */ 4072 APPLESTATIC int 4073 nfsrpc_statfs(vnode_t vp, struct nfsstatfs *sbp, struct nfsfsinfo *fsp, 4074 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, 4075 void *stuff) 4076 { 4077 u_int32_t *tl = NULL; 4078 struct nfsrv_descript nfsd, *nd = &nfsd; 4079 struct nfsmount *nmp; 4080 nfsattrbit_t attrbits; 4081 int error; 4082 4083 *attrflagp = 0; 4084 nmp = VFSTONFS(vnode_mount(vp)); 4085 if (NFSHASNFSV4(nmp)) { 4086 /* 4087 * For V4, you actually do a getattr. 4088 */ 4089 NFSCL_REQSTART(nd, NFSPROC_GETATTR, vp); 4090 NFSSTATFS_GETATTRBIT(&attrbits); 4091 (void) nfsrv_putattrbit(nd, &attrbits); 4092 nd->nd_flag |= ND_USEGSSNAME; 4093 error = nfscl_request(nd, vp, p, cred, stuff); 4094 if (error) 4095 return (error); 4096 if (nd->nd_repstat == 0) { 4097 error = nfsv4_loadattr(nd, NULL, nap, NULL, NULL, 0, 4098 NULL, NULL, sbp, fsp, NULL, 0, NULL, NULL, NULL, p, 4099 cred); 4100 if (!error) { 4101 nmp->nm_fsid[0] = nap->na_filesid[0]; 4102 nmp->nm_fsid[1] = nap->na_filesid[1]; 4103 NFSSETHASSETFSID(nmp); 4104 *attrflagp = 1; 4105 } 4106 } else { 4107 error = nd->nd_repstat; 4108 } 4109 if (error) 4110 goto nfsmout; 4111 } else { 4112 NFSCL_REQSTART(nd, NFSPROC_FSSTAT, vp); 4113 error = nfscl_request(nd, vp, p, cred, stuff); 4114 if (error) 4115 return (error); 4116 if (nd->nd_flag & ND_NFSV3) { 4117 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 4118 if (error) 4119 goto nfsmout; 4120 } 4121 if (nd->nd_repstat) { 4122 error = nd->nd_repstat; 4123 goto nfsmout; 4124 } 4125 NFSM_DISSECT(tl, u_int32_t *, 4126 NFSX_STATFS(nd->nd_flag & ND_NFSV3)); 4127 } 4128 if (NFSHASNFSV3(nmp)) { 4129 sbp->sf_tbytes = fxdr_hyper(tl); tl += 2; 4130 sbp->sf_fbytes = fxdr_hyper(tl); tl += 2; 4131 sbp->sf_abytes = fxdr_hyper(tl); tl += 2; 4132 sbp->sf_tfiles = fxdr_hyper(tl); tl += 2; 4133 sbp->sf_ffiles = fxdr_hyper(tl); tl += 2; 4134 sbp->sf_afiles = fxdr_hyper(tl); tl += 2; 4135 sbp->sf_invarsec = fxdr_unsigned(u_int32_t, *tl); 4136 } else if (NFSHASNFSV4(nmp) == 0) { 4137 sbp->sf_tsize = fxdr_unsigned(u_int32_t, *tl++); 4138 sbp->sf_bsize = fxdr_unsigned(u_int32_t, *tl++); 4139 sbp->sf_blocks = fxdr_unsigned(u_int32_t, *tl++); 4140 sbp->sf_bfree = fxdr_unsigned(u_int32_t, *tl++); 4141 sbp->sf_bavail = fxdr_unsigned(u_int32_t, *tl); 4142 } 4143 nfsmout: 4144 mbuf_freem(nd->nd_mrep); 4145 return (error); 4146 } 4147 4148 /* 4149 * nfs pathconf rpc 4150 */ 4151 APPLESTATIC int 4152 nfsrpc_pathconf(vnode_t vp, struct nfsv3_pathconf *pc, 4153 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, 4154 void *stuff) 4155 { 4156 struct nfsrv_descript nfsd, *nd = &nfsd; 4157 struct nfsmount *nmp; 4158 u_int32_t *tl; 4159 nfsattrbit_t attrbits; 4160 int error; 4161 4162 *attrflagp = 0; 4163 nmp = VFSTONFS(vnode_mount(vp)); 4164 if (NFSHASNFSV4(nmp)) { 4165 /* 4166 * For V4, you actually do a getattr. 4167 */ 4168 NFSCL_REQSTART(nd, NFSPROC_GETATTR, vp); 4169 NFSPATHCONF_GETATTRBIT(&attrbits); 4170 (void) nfsrv_putattrbit(nd, &attrbits); 4171 nd->nd_flag |= ND_USEGSSNAME; 4172 error = nfscl_request(nd, vp, p, cred, stuff); 4173 if (error) 4174 return (error); 4175 if (nd->nd_repstat == 0) { 4176 error = nfsv4_loadattr(nd, NULL, nap, NULL, NULL, 0, 4177 pc, NULL, NULL, NULL, NULL, 0, NULL, NULL, NULL, p, 4178 cred); 4179 if (!error) 4180 *attrflagp = 1; 4181 } else { 4182 error = nd->nd_repstat; 4183 } 4184 } else { 4185 NFSCL_REQSTART(nd, NFSPROC_PATHCONF, vp); 4186 error = nfscl_request(nd, vp, p, cred, stuff); 4187 if (error) 4188 return (error); 4189 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 4190 if (nd->nd_repstat && !error) 4191 error = nd->nd_repstat; 4192 if (!error) { 4193 NFSM_DISSECT(tl, u_int32_t *, NFSX_V3PATHCONF); 4194 pc->pc_linkmax = fxdr_unsigned(u_int32_t, *tl++); 4195 pc->pc_namemax = fxdr_unsigned(u_int32_t, *tl++); 4196 pc->pc_notrunc = fxdr_unsigned(u_int32_t, *tl++); 4197 pc->pc_chownrestricted = 4198 fxdr_unsigned(u_int32_t, *tl++); 4199 pc->pc_caseinsensitive = 4200 fxdr_unsigned(u_int32_t, *tl++); 4201 pc->pc_casepreserving = fxdr_unsigned(u_int32_t, *tl); 4202 } 4203 } 4204 nfsmout: 4205 mbuf_freem(nd->nd_mrep); 4206 return (error); 4207 } 4208 4209 /* 4210 * nfs version 3 fsinfo rpc call 4211 */ 4212 APPLESTATIC int 4213 nfsrpc_fsinfo(vnode_t vp, struct nfsfsinfo *fsp, struct ucred *cred, 4214 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff) 4215 { 4216 u_int32_t *tl; 4217 struct nfsrv_descript nfsd, *nd = &nfsd; 4218 int error; 4219 4220 *attrflagp = 0; 4221 NFSCL_REQSTART(nd, NFSPROC_FSINFO, vp); 4222 error = nfscl_request(nd, vp, p, cred, stuff); 4223 if (error) 4224 return (error); 4225 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 4226 if (nd->nd_repstat && !error) 4227 error = nd->nd_repstat; 4228 if (!error) { 4229 NFSM_DISSECT(tl, u_int32_t *, NFSX_V3FSINFO); 4230 fsp->fs_rtmax = fxdr_unsigned(u_int32_t, *tl++); 4231 fsp->fs_rtpref = fxdr_unsigned(u_int32_t, *tl++); 4232 fsp->fs_rtmult = fxdr_unsigned(u_int32_t, *tl++); 4233 fsp->fs_wtmax = fxdr_unsigned(u_int32_t, *tl++); 4234 fsp->fs_wtpref = fxdr_unsigned(u_int32_t, *tl++); 4235 fsp->fs_wtmult = fxdr_unsigned(u_int32_t, *tl++); 4236 fsp->fs_dtpref = fxdr_unsigned(u_int32_t, *tl++); 4237 fsp->fs_maxfilesize = fxdr_hyper(tl); 4238 tl += 2; 4239 fxdr_nfsv3time(tl, &fsp->fs_timedelta); 4240 tl += 2; 4241 fsp->fs_properties = fxdr_unsigned(u_int32_t, *tl); 4242 } 4243 nfsmout: 4244 mbuf_freem(nd->nd_mrep); 4245 return (error); 4246 } 4247 4248 /* 4249 * This function performs the Renew RPC. 4250 */ 4251 APPLESTATIC int 4252 nfsrpc_renew(struct nfsclclient *clp, struct nfsclds *dsp, struct ucred *cred, 4253 NFSPROC_T *p) 4254 { 4255 u_int32_t *tl; 4256 struct nfsrv_descript nfsd; 4257 struct nfsrv_descript *nd = &nfsd; 4258 struct nfsmount *nmp; 4259 int error; 4260 struct nfssockreq *nrp; 4261 struct nfsclsession *tsep; 4262 4263 nmp = clp->nfsc_nmp; 4264 if (nmp == NULL) 4265 return (0); 4266 if (dsp == NULL) 4267 nfscl_reqstart(nd, NFSPROC_RENEW, nmp, NULL, 0, NULL, NULL); 4268 else 4269 nfscl_reqstart(nd, NFSPROC_RENEW, nmp, NULL, 0, NULL, 4270 &dsp->nfsclds_sess); 4271 if (!NFSHASNFSV4N(nmp)) { 4272 /* NFSv4.1 just uses a Sequence Op and not a Renew. */ 4273 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 4274 tsep = nfsmnt_mdssession(nmp); 4275 *tl++ = tsep->nfsess_clientid.lval[0]; 4276 *tl = tsep->nfsess_clientid.lval[1]; 4277 } 4278 nrp = NULL; 4279 if (dsp != NULL) 4280 nrp = dsp->nfsclds_sockp; 4281 if (nrp == NULL) 4282 /* If NULL, use the MDS socket. */ 4283 nrp = &nmp->nm_sockreq; 4284 nd->nd_flag |= ND_USEGSSNAME; 4285 if (dsp == NULL) 4286 error = newnfs_request(nd, nmp, NULL, nrp, NULL, p, cred, 4287 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4288 else 4289 error = newnfs_request(nd, nmp, NULL, nrp, NULL, p, cred, 4290 NFS_PROG, NFS_VER4, NULL, 1, NULL, &dsp->nfsclds_sess); 4291 if (error) 4292 return (error); 4293 error = nd->nd_repstat; 4294 mbuf_freem(nd->nd_mrep); 4295 return (error); 4296 } 4297 4298 /* 4299 * This function performs the Releaselockowner RPC. 4300 */ 4301 APPLESTATIC int 4302 nfsrpc_rellockown(struct nfsmount *nmp, struct nfscllockowner *lp, 4303 uint8_t *fh, int fhlen, struct ucred *cred, NFSPROC_T *p) 4304 { 4305 struct nfsrv_descript nfsd, *nd = &nfsd; 4306 u_int32_t *tl; 4307 int error; 4308 uint8_t own[NFSV4CL_LOCKNAMELEN + NFSX_V4FHMAX]; 4309 struct nfsclsession *tsep; 4310 4311 if (NFSHASNFSV4N(nmp)) { 4312 /* For NFSv4.1, do a FreeStateID. */ 4313 nfscl_reqstart(nd, NFSPROC_FREESTATEID, nmp, NULL, 0, NULL, 4314 NULL); 4315 nfsm_stateidtom(nd, &lp->nfsl_stateid, NFSSTATEID_PUTSTATEID); 4316 } else { 4317 nfscl_reqstart(nd, NFSPROC_RELEASELCKOWN, nmp, NULL, 0, NULL, 4318 NULL); 4319 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 4320 tsep = nfsmnt_mdssession(nmp); 4321 *tl++ = tsep->nfsess_clientid.lval[0]; 4322 *tl = tsep->nfsess_clientid.lval[1]; 4323 NFSBCOPY(lp->nfsl_owner, own, NFSV4CL_LOCKNAMELEN); 4324 NFSBCOPY(fh, &own[NFSV4CL_LOCKNAMELEN], fhlen); 4325 (void)nfsm_strtom(nd, own, NFSV4CL_LOCKNAMELEN + fhlen); 4326 } 4327 nd->nd_flag |= ND_USEGSSNAME; 4328 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 4329 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4330 if (error) 4331 return (error); 4332 error = nd->nd_repstat; 4333 mbuf_freem(nd->nd_mrep); 4334 return (error); 4335 } 4336 4337 /* 4338 * This function performs the Compound to get the mount pt FH. 4339 */ 4340 APPLESTATIC int 4341 nfsrpc_getdirpath(struct nfsmount *nmp, u_char *dirpath, struct ucred *cred, 4342 NFSPROC_T *p) 4343 { 4344 u_int32_t *tl; 4345 struct nfsrv_descript nfsd; 4346 struct nfsrv_descript *nd = &nfsd; 4347 u_char *cp, *cp2; 4348 int error, cnt, len, setnil; 4349 u_int32_t *opcntp; 4350 4351 nfscl_reqstart(nd, NFSPROC_PUTROOTFH, nmp, NULL, 0, &opcntp, NULL); 4352 cp = dirpath; 4353 cnt = 0; 4354 do { 4355 setnil = 0; 4356 while (*cp == '/') 4357 cp++; 4358 cp2 = cp; 4359 while (*cp2 != '\0' && *cp2 != '/') 4360 cp2++; 4361 if (*cp2 == '/') { 4362 setnil = 1; 4363 *cp2 = '\0'; 4364 } 4365 if (cp2 != cp) { 4366 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 4367 *tl = txdr_unsigned(NFSV4OP_LOOKUP); 4368 nfsm_strtom(nd, cp, strlen(cp)); 4369 cnt++; 4370 } 4371 if (setnil) 4372 *cp2++ = '/'; 4373 cp = cp2; 4374 } while (*cp != '\0'); 4375 if (NFSHASNFSV4N(nmp)) 4376 /* Has a Sequence Op done by nfscl_reqstart(). */ 4377 *opcntp = txdr_unsigned(3 + cnt); 4378 else 4379 *opcntp = txdr_unsigned(2 + cnt); 4380 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 4381 *tl = txdr_unsigned(NFSV4OP_GETFH); 4382 nd->nd_flag |= ND_USEGSSNAME; 4383 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 4384 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4385 if (error) 4386 return (error); 4387 if (nd->nd_repstat == 0) { 4388 NFSM_DISSECT(tl, u_int32_t *, (3 + 2 * cnt) * NFSX_UNSIGNED); 4389 tl += (2 + 2 * cnt); 4390 if ((len = fxdr_unsigned(int, *tl)) <= 0 || 4391 len > NFSX_FHMAX) { 4392 nd->nd_repstat = NFSERR_BADXDR; 4393 } else { 4394 nd->nd_repstat = nfsrv_mtostr(nd, nmp->nm_fh, len); 4395 if (nd->nd_repstat == 0) 4396 nmp->nm_fhsize = len; 4397 } 4398 } 4399 error = nd->nd_repstat; 4400 nfsmout: 4401 mbuf_freem(nd->nd_mrep); 4402 return (error); 4403 } 4404 4405 /* 4406 * This function performs the Delegreturn RPC. 4407 */ 4408 APPLESTATIC int 4409 nfsrpc_delegreturn(struct nfscldeleg *dp, struct ucred *cred, 4410 struct nfsmount *nmp, NFSPROC_T *p, int syscred) 4411 { 4412 u_int32_t *tl; 4413 struct nfsrv_descript nfsd; 4414 struct nfsrv_descript *nd = &nfsd; 4415 int error; 4416 4417 nfscl_reqstart(nd, NFSPROC_DELEGRETURN, nmp, dp->nfsdl_fh, 4418 dp->nfsdl_fhlen, NULL, NULL); 4419 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID); 4420 if (NFSHASNFSV4N(nmp)) 4421 *tl++ = 0; 4422 else 4423 *tl++ = dp->nfsdl_stateid.seqid; 4424 *tl++ = dp->nfsdl_stateid.other[0]; 4425 *tl++ = dp->nfsdl_stateid.other[1]; 4426 *tl = dp->nfsdl_stateid.other[2]; 4427 if (syscred) 4428 nd->nd_flag |= ND_USEGSSNAME; 4429 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 4430 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4431 if (error) 4432 return (error); 4433 error = nd->nd_repstat; 4434 mbuf_freem(nd->nd_mrep); 4435 return (error); 4436 } 4437 4438 /* 4439 * nfs getacl call. 4440 */ 4441 APPLESTATIC int 4442 nfsrpc_getacl(vnode_t vp, struct ucred *cred, NFSPROC_T *p, 4443 struct acl *aclp, void *stuff) 4444 { 4445 struct nfsrv_descript nfsd, *nd = &nfsd; 4446 int error; 4447 nfsattrbit_t attrbits; 4448 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 4449 4450 if (nfsrv_useacl == 0 || !NFSHASNFSV4(nmp)) 4451 return (EOPNOTSUPP); 4452 NFSCL_REQSTART(nd, NFSPROC_GETACL, vp); 4453 NFSZERO_ATTRBIT(&attrbits); 4454 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_ACL); 4455 (void) nfsrv_putattrbit(nd, &attrbits); 4456 error = nfscl_request(nd, vp, p, cred, stuff); 4457 if (error) 4458 return (error); 4459 if (!nd->nd_repstat) 4460 error = nfsv4_loadattr(nd, vp, NULL, NULL, NULL, 0, NULL, 4461 NULL, NULL, NULL, aclp, 0, NULL, NULL, NULL, p, cred); 4462 else 4463 error = nd->nd_repstat; 4464 mbuf_freem(nd->nd_mrep); 4465 return (error); 4466 } 4467 4468 /* 4469 * nfs setacl call. 4470 */ 4471 APPLESTATIC int 4472 nfsrpc_setacl(vnode_t vp, struct ucred *cred, NFSPROC_T *p, 4473 struct acl *aclp, void *stuff) 4474 { 4475 int error; 4476 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 4477 4478 if (nfsrv_useacl == 0 || !NFSHASNFSV4(nmp)) 4479 return (EOPNOTSUPP); 4480 error = nfsrpc_setattr(vp, NULL, aclp, cred, p, NULL, NULL, stuff); 4481 return (error); 4482 } 4483 4484 /* 4485 * nfs setacl call. 4486 */ 4487 static int 4488 nfsrpc_setaclrpc(vnode_t vp, struct ucred *cred, NFSPROC_T *p, 4489 struct acl *aclp, nfsv4stateid_t *stateidp, void *stuff) 4490 { 4491 struct nfsrv_descript nfsd, *nd = &nfsd; 4492 int error; 4493 nfsattrbit_t attrbits; 4494 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 4495 4496 if (!NFSHASNFSV4(nmp)) 4497 return (EOPNOTSUPP); 4498 NFSCL_REQSTART(nd, NFSPROC_SETACL, vp); 4499 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID); 4500 NFSZERO_ATTRBIT(&attrbits); 4501 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_ACL); 4502 (void) nfsv4_fillattr(nd, vnode_mount(vp), vp, aclp, NULL, NULL, 0, 4503 &attrbits, NULL, NULL, 0, 0, 0, 0, (uint64_t)0); 4504 error = nfscl_request(nd, vp, p, cred, stuff); 4505 if (error) 4506 return (error); 4507 /* Don't care about the pre/postop attributes */ 4508 mbuf_freem(nd->nd_mrep); 4509 return (nd->nd_repstat); 4510 } 4511 4512 /* 4513 * Do the NFSv4.1 Exchange ID. 4514 */ 4515 int 4516 nfsrpc_exchangeid(struct nfsmount *nmp, struct nfsclclient *clp, 4517 struct nfssockreq *nrp, uint32_t exchflags, struct nfsclds **dspp, 4518 struct ucred *cred, NFSPROC_T *p) 4519 { 4520 uint32_t *tl, v41flags; 4521 struct nfsrv_descript nfsd; 4522 struct nfsrv_descript *nd = &nfsd; 4523 struct nfsclds *dsp; 4524 struct timespec verstime; 4525 int error, len; 4526 4527 *dspp = NULL; 4528 nfscl_reqstart(nd, NFSPROC_EXCHANGEID, nmp, NULL, 0, NULL, NULL); 4529 NFSM_BUILD(tl, uint32_t *, 2 * NFSX_UNSIGNED); 4530 *tl++ = txdr_unsigned(nfsboottime.tv_sec); /* Client owner */ 4531 *tl = txdr_unsigned(clp->nfsc_rev); 4532 (void) nfsm_strtom(nd, clp->nfsc_id, clp->nfsc_idlen); 4533 4534 NFSM_BUILD(tl, uint32_t *, 3 * NFSX_UNSIGNED); 4535 *tl++ = txdr_unsigned(exchflags); 4536 *tl++ = txdr_unsigned(NFSV4EXCH_SP4NONE); 4537 4538 /* Set the implementation id4 */ 4539 *tl = txdr_unsigned(1); 4540 (void) nfsm_strtom(nd, "freebsd.org", strlen("freebsd.org")); 4541 (void) nfsm_strtom(nd, version, strlen(version)); 4542 NFSM_BUILD(tl, uint32_t *, NFSX_V4TIME); 4543 verstime.tv_sec = 1293840000; /* Jan 1, 2011 */ 4544 verstime.tv_nsec = 0; 4545 txdr_nfsv4time(&verstime, tl); 4546 nd->nd_flag |= ND_USEGSSNAME; 4547 error = newnfs_request(nd, nmp, NULL, nrp, NULL, p, cred, 4548 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4549 NFSCL_DEBUG(1, "exchangeid err=%d reps=%d\n", error, 4550 (int)nd->nd_repstat); 4551 if (error != 0) 4552 return (error); 4553 if (nd->nd_repstat == 0) { 4554 NFSM_DISSECT(tl, uint32_t *, 6 * NFSX_UNSIGNED + NFSX_HYPER); 4555 len = fxdr_unsigned(int, *(tl + 7)); 4556 if (len < 0 || len > NFSV4_OPAQUELIMIT) { 4557 error = NFSERR_BADXDR; 4558 goto nfsmout; 4559 } 4560 dsp = malloc(sizeof(struct nfsclds) + len + 1, M_NFSCLDS, 4561 M_WAITOK | M_ZERO); 4562 dsp->nfsclds_expire = NFSD_MONOSEC + clp->nfsc_renew; 4563 dsp->nfsclds_servownlen = len; 4564 dsp->nfsclds_sess.nfsess_clientid.lval[0] = *tl++; 4565 dsp->nfsclds_sess.nfsess_clientid.lval[1] = *tl++; 4566 dsp->nfsclds_sess.nfsess_sequenceid = 4567 fxdr_unsigned(uint32_t, *tl++); 4568 v41flags = fxdr_unsigned(uint32_t, *tl); 4569 if ((v41flags & NFSV4EXCH_USEPNFSMDS) != 0 && 4570 NFSHASPNFSOPT(nmp)) { 4571 NFSCL_DEBUG(1, "set PNFS\n"); 4572 NFSLOCKMNT(nmp); 4573 nmp->nm_state |= NFSSTA_PNFS; 4574 NFSUNLOCKMNT(nmp); 4575 dsp->nfsclds_flags |= NFSCLDS_MDS; 4576 } 4577 if ((v41flags & NFSV4EXCH_USEPNFSDS) != 0) 4578 dsp->nfsclds_flags |= NFSCLDS_DS; 4579 if (len > 0) 4580 nd->nd_repstat = nfsrv_mtostr(nd, 4581 dsp->nfsclds_serverown, len); 4582 if (nd->nd_repstat == 0) { 4583 mtx_init(&dsp->nfsclds_mtx, "nfsds", NULL, MTX_DEF); 4584 mtx_init(&dsp->nfsclds_sess.nfsess_mtx, "nfssession", 4585 NULL, MTX_DEF); 4586 nfscl_initsessionslots(&dsp->nfsclds_sess); 4587 *dspp = dsp; 4588 } else 4589 free(dsp, M_NFSCLDS); 4590 } 4591 error = nd->nd_repstat; 4592 nfsmout: 4593 mbuf_freem(nd->nd_mrep); 4594 return (error); 4595 } 4596 4597 /* 4598 * Do the NFSv4.1 Create Session. 4599 */ 4600 int 4601 nfsrpc_createsession(struct nfsmount *nmp, struct nfsclsession *sep, 4602 struct nfssockreq *nrp, uint32_t sequenceid, int mds, struct ucred *cred, 4603 NFSPROC_T *p) 4604 { 4605 uint32_t crflags, *tl; 4606 struct nfsrv_descript nfsd; 4607 struct nfsrv_descript *nd = &nfsd; 4608 int error, irdcnt; 4609 4610 nfscl_reqstart(nd, NFSPROC_CREATESESSION, nmp, NULL, 0, NULL, NULL); 4611 NFSM_BUILD(tl, uint32_t *, 4 * NFSX_UNSIGNED); 4612 *tl++ = sep->nfsess_clientid.lval[0]; 4613 *tl++ = sep->nfsess_clientid.lval[1]; 4614 *tl++ = txdr_unsigned(sequenceid); 4615 crflags = (NFSMNT_RDONLY(nmp->nm_mountp) ? 0 : NFSV4CRSESS_PERSIST); 4616 if (nfscl_enablecallb != 0 && nfs_numnfscbd > 0) 4617 crflags |= NFSV4CRSESS_CONNBACKCHAN; 4618 *tl = txdr_unsigned(crflags); 4619 4620 /* Fill in fore channel attributes. */ 4621 NFSM_BUILD(tl, uint32_t *, 7 * NFSX_UNSIGNED); 4622 *tl++ = 0; /* Header pad size */ 4623 *tl++ = txdr_unsigned(100000); /* Max request size */ 4624 *tl++ = txdr_unsigned(100000); /* Max response size */ 4625 *tl++ = txdr_unsigned(4096); /* Max response size cached */ 4626 *tl++ = txdr_unsigned(20); /* Max operations */ 4627 *tl++ = txdr_unsigned(64); /* Max slots */ 4628 *tl = 0; /* No rdma ird */ 4629 4630 /* Fill in back channel attributes. */ 4631 NFSM_BUILD(tl, uint32_t *, 7 * NFSX_UNSIGNED); 4632 *tl++ = 0; /* Header pad size */ 4633 *tl++ = txdr_unsigned(10000); /* Max request size */ 4634 *tl++ = txdr_unsigned(10000); /* Max response size */ 4635 *tl++ = txdr_unsigned(4096); /* Max response size cached */ 4636 *tl++ = txdr_unsigned(4); /* Max operations */ 4637 *tl++ = txdr_unsigned(NFSV4_CBSLOTS); /* Max slots */ 4638 *tl = 0; /* No rdma ird */ 4639 4640 NFSM_BUILD(tl, uint32_t *, 8 * NFSX_UNSIGNED); 4641 *tl++ = txdr_unsigned(NFS_CALLBCKPROG); /* Call back prog # */ 4642 4643 /* Allow AUTH_SYS callbacks as uid, gid == 0. */ 4644 *tl++ = txdr_unsigned(1); /* Auth_sys only */ 4645 *tl++ = txdr_unsigned(AUTH_SYS); /* AUTH_SYS type */ 4646 *tl++ = txdr_unsigned(nfsboottime.tv_sec); /* time stamp */ 4647 *tl++ = 0; /* Null machine name */ 4648 *tl++ = 0; /* Uid == 0 */ 4649 *tl++ = 0; /* Gid == 0 */ 4650 *tl = 0; /* No additional gids */ 4651 nd->nd_flag |= ND_USEGSSNAME; 4652 error = newnfs_request(nd, nmp, NULL, nrp, NULL, p, cred, NFS_PROG, 4653 NFS_VER4, NULL, 1, NULL, NULL); 4654 if (error != 0) 4655 return (error); 4656 if (nd->nd_repstat == 0) { 4657 NFSM_DISSECT(tl, uint32_t *, NFSX_V4SESSIONID + 4658 2 * NFSX_UNSIGNED); 4659 bcopy(tl, sep->nfsess_sessionid, NFSX_V4SESSIONID); 4660 tl += NFSX_V4SESSIONID / NFSX_UNSIGNED; 4661 sep->nfsess_sequenceid = fxdr_unsigned(uint32_t, *tl++); 4662 crflags = fxdr_unsigned(uint32_t, *tl); 4663 if ((crflags & NFSV4CRSESS_PERSIST) != 0 && mds != 0) { 4664 NFSLOCKMNT(nmp); 4665 nmp->nm_state |= NFSSTA_SESSPERSIST; 4666 NFSUNLOCKMNT(nmp); 4667 } 4668 4669 /* Get the fore channel slot count. */ 4670 NFSM_DISSECT(tl, uint32_t *, 7 * NFSX_UNSIGNED); 4671 tl += 3; /* Skip the other counts. */ 4672 sep->nfsess_maxcache = fxdr_unsigned(int, *tl++); 4673 tl++; 4674 sep->nfsess_foreslots = fxdr_unsigned(uint16_t, *tl++); 4675 NFSCL_DEBUG(4, "fore slots=%d\n", (int)sep->nfsess_foreslots); 4676 irdcnt = fxdr_unsigned(int, *tl); 4677 if (irdcnt > 0) 4678 NFSM_DISSECT(tl, uint32_t *, irdcnt * NFSX_UNSIGNED); 4679 4680 /* and the back channel slot count. */ 4681 NFSM_DISSECT(tl, uint32_t *, 7 * NFSX_UNSIGNED); 4682 tl += 5; 4683 sep->nfsess_backslots = fxdr_unsigned(uint16_t, *tl); 4684 NFSCL_DEBUG(4, "back slots=%d\n", (int)sep->nfsess_backslots); 4685 } 4686 error = nd->nd_repstat; 4687 nfsmout: 4688 mbuf_freem(nd->nd_mrep); 4689 return (error); 4690 } 4691 4692 /* 4693 * Do the NFSv4.1 Destroy Session. 4694 */ 4695 int 4696 nfsrpc_destroysession(struct nfsmount *nmp, struct nfsclclient *clp, 4697 struct ucred *cred, NFSPROC_T *p) 4698 { 4699 uint32_t *tl; 4700 struct nfsrv_descript nfsd; 4701 struct nfsrv_descript *nd = &nfsd; 4702 int error; 4703 struct nfsclsession *tsep; 4704 4705 nfscl_reqstart(nd, NFSPROC_DESTROYSESSION, nmp, NULL, 0, NULL, NULL); 4706 NFSM_BUILD(tl, uint32_t *, NFSX_V4SESSIONID); 4707 tsep = nfsmnt_mdssession(nmp); 4708 bcopy(tsep->nfsess_sessionid, tl, NFSX_V4SESSIONID); 4709 nd->nd_flag |= ND_USEGSSNAME; 4710 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 4711 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4712 if (error != 0) 4713 return (error); 4714 error = nd->nd_repstat; 4715 mbuf_freem(nd->nd_mrep); 4716 return (error); 4717 } 4718 4719 /* 4720 * Do the NFSv4.1 Destroy Client. 4721 */ 4722 int 4723 nfsrpc_destroyclient(struct nfsmount *nmp, struct nfsclclient *clp, 4724 struct ucred *cred, NFSPROC_T *p) 4725 { 4726 uint32_t *tl; 4727 struct nfsrv_descript nfsd; 4728 struct nfsrv_descript *nd = &nfsd; 4729 int error; 4730 struct nfsclsession *tsep; 4731 4732 nfscl_reqstart(nd, NFSPROC_DESTROYCLIENT, nmp, NULL, 0, NULL, NULL); 4733 NFSM_BUILD(tl, uint32_t *, 2 * NFSX_UNSIGNED); 4734 tsep = nfsmnt_mdssession(nmp); 4735 *tl++ = tsep->nfsess_clientid.lval[0]; 4736 *tl = tsep->nfsess_clientid.lval[1]; 4737 nd->nd_flag |= ND_USEGSSNAME; 4738 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 4739 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4740 if (error != 0) 4741 return (error); 4742 error = nd->nd_repstat; 4743 mbuf_freem(nd->nd_mrep); 4744 return (error); 4745 } 4746 4747 /* 4748 * Do the NFSv4.1 LayoutGet. 4749 */ 4750 int 4751 nfsrpc_layoutget(struct nfsmount *nmp, uint8_t *fhp, int fhlen, int iomode, 4752 uint64_t offset, uint64_t len, uint64_t minlen, int layoutlen, 4753 nfsv4stateid_t *stateidp, int *retonclosep, struct nfsclflayouthead *flhp, 4754 struct ucred *cred, NFSPROC_T *p, void *stuff) 4755 { 4756 uint32_t *tl; 4757 struct nfsrv_descript nfsd, *nd = &nfsd; 4758 struct nfsfh *nfhp; 4759 struct nfsclflayout *flp, *prevflp, *tflp; 4760 int cnt, error, gotiomode, fhcnt, nfhlen, i, j; 4761 uint8_t *cp; 4762 uint64_t retlen; 4763 4764 flp = NULL; 4765 gotiomode = -1; 4766 nfscl_reqstart(nd, NFSPROC_LAYOUTGET, nmp, fhp, fhlen, NULL, NULL); 4767 NFSM_BUILD(tl, uint32_t *, 4 * NFSX_UNSIGNED + 3 * NFSX_HYPER + 4768 NFSX_STATEID); 4769 *tl++ = newnfs_false; /* Don't signal availability. */ 4770 *tl++ = txdr_unsigned(NFSLAYOUT_NFSV4_1_FILES); 4771 *tl++ = txdr_unsigned(iomode); 4772 txdr_hyper(offset, tl); 4773 tl += 2; 4774 txdr_hyper(len, tl); 4775 tl += 2; 4776 txdr_hyper(minlen, tl); 4777 tl += 2; 4778 *tl++ = txdr_unsigned(stateidp->seqid); 4779 NFSCL_DEBUG(4, "layget seq=%d\n", (int)stateidp->seqid); 4780 *tl++ = stateidp->other[0]; 4781 *tl++ = stateidp->other[1]; 4782 *tl++ = stateidp->other[2]; 4783 *tl = txdr_unsigned(layoutlen); 4784 nd->nd_flag |= ND_USEGSSNAME; 4785 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 4786 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4787 if (error != 0) 4788 return (error); 4789 if (nd->nd_repstat == 0) { 4790 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED + NFSX_STATEID); 4791 if (*tl++ != 0) 4792 *retonclosep = 1; 4793 else 4794 *retonclosep = 0; 4795 stateidp->seqid = fxdr_unsigned(uint32_t, *tl++); 4796 NFSCL_DEBUG(4, "retoncls=%d stseq=%d\n", *retonclosep, 4797 (int)stateidp->seqid); 4798 stateidp->other[0] = *tl++; 4799 stateidp->other[1] = *tl++; 4800 stateidp->other[2] = *tl++; 4801 cnt = fxdr_unsigned(int, *tl); 4802 NFSCL_DEBUG(4, "layg cnt=%d\n", cnt); 4803 if (cnt <= 0 || cnt > 10000) { 4804 /* Don't accept more than 10000 layouts in reply. */ 4805 error = NFSERR_BADXDR; 4806 goto nfsmout; 4807 } 4808 for (i = 0; i < cnt; i++) { 4809 /* Dissect all the way to the file handle cnt. */ 4810 NFSM_DISSECT(tl, uint32_t *, 3 * NFSX_HYPER + 4811 6 * NFSX_UNSIGNED + NFSX_V4DEVICEID); 4812 fhcnt = fxdr_unsigned(int, *(tl + 11 + 4813 NFSX_V4DEVICEID / NFSX_UNSIGNED)); 4814 NFSCL_DEBUG(4, "fhcnt=%d\n", fhcnt); 4815 if (fhcnt < 0 || fhcnt > 100) { 4816 /* Don't accept more than 100 file handles. */ 4817 error = NFSERR_BADXDR; 4818 goto nfsmout; 4819 } 4820 if (fhcnt > 1) 4821 flp = malloc(sizeof(*flp) + (fhcnt - 1) * 4822 sizeof(struct nfsfh *), 4823 M_NFSFLAYOUT, M_WAITOK); 4824 else 4825 flp = malloc(sizeof(*flp), 4826 M_NFSFLAYOUT, M_WAITOK); 4827 flp->nfsfl_flags = 0; 4828 flp->nfsfl_fhcnt = 0; 4829 flp->nfsfl_devp = NULL; 4830 flp->nfsfl_off = fxdr_hyper(tl); tl += 2; 4831 retlen = fxdr_hyper(tl); tl += 2; 4832 if (flp->nfsfl_off + retlen < flp->nfsfl_off) 4833 flp->nfsfl_end = UINT64_MAX - flp->nfsfl_off; 4834 else 4835 flp->nfsfl_end = flp->nfsfl_off + retlen; 4836 flp->nfsfl_iomode = fxdr_unsigned(int, *tl++); 4837 if (gotiomode == -1) 4838 gotiomode = flp->nfsfl_iomode; 4839 NFSCL_DEBUG(4, "layg reqiom=%d retiom=%d\n", iomode, 4840 (int)flp->nfsfl_iomode); 4841 if (fxdr_unsigned(int, *tl++) != 4842 NFSLAYOUT_NFSV4_1_FILES) { 4843 printf("NFSv4.1: got non-files layout\n"); 4844 error = NFSERR_BADXDR; 4845 goto nfsmout; 4846 } 4847 NFSBCOPY(++tl, flp->nfsfl_dev, NFSX_V4DEVICEID); 4848 tl += (NFSX_V4DEVICEID / NFSX_UNSIGNED); 4849 flp->nfsfl_util = fxdr_unsigned(uint32_t, *tl++); 4850 NFSCL_DEBUG(4, "flutil=0x%x\n", flp->nfsfl_util); 4851 flp->nfsfl_stripe1 = fxdr_unsigned(uint32_t, *tl++); 4852 flp->nfsfl_patoff = fxdr_hyper(tl); tl += 2; 4853 if (fxdr_unsigned(int, *tl) != fhcnt) { 4854 printf("EEK! bad fhcnt\n"); 4855 error = NFSERR_BADXDR; 4856 goto nfsmout; 4857 } 4858 for (j = 0; j < fhcnt; j++) { 4859 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 4860 nfhlen = fxdr_unsigned(int, *tl); 4861 if (nfhlen <= 0 || nfhlen > NFSX_V4FHMAX) { 4862 error = NFSERR_BADXDR; 4863 goto nfsmout; 4864 } 4865 nfhp = malloc(sizeof(*nfhp) + nfhlen - 1, 4866 M_NFSFH, M_WAITOK); 4867 flp->nfsfl_fh[j] = nfhp; 4868 flp->nfsfl_fhcnt++; 4869 nfhp->nfh_len = nfhlen; 4870 NFSM_DISSECT(cp, uint8_t *, NFSM_RNDUP(nfhlen)); 4871 NFSBCOPY(cp, nfhp->nfh_fh, nfhlen); 4872 } 4873 if (flp->nfsfl_iomode == gotiomode) { 4874 /* Keep the list in increasing offset order. */ 4875 tflp = LIST_FIRST(flhp); 4876 prevflp = NULL; 4877 while (tflp != NULL && 4878 tflp->nfsfl_off < flp->nfsfl_off) { 4879 prevflp = tflp; 4880 tflp = LIST_NEXT(tflp, nfsfl_list); 4881 } 4882 if (prevflp == NULL) 4883 LIST_INSERT_HEAD(flhp, flp, nfsfl_list); 4884 else 4885 LIST_INSERT_AFTER(prevflp, flp, 4886 nfsfl_list); 4887 } else { 4888 printf("nfscl_layoutget(): got wrong iomode\n"); 4889 nfscl_freeflayout(flp); 4890 } 4891 flp = NULL; 4892 } 4893 } 4894 if (nd->nd_repstat != 0 && error == 0) 4895 error = nd->nd_repstat; 4896 nfsmout: 4897 if (error != 0 && flp != NULL) 4898 nfscl_freeflayout(flp); 4899 mbuf_freem(nd->nd_mrep); 4900 return (error); 4901 } 4902 4903 /* 4904 * Do the NFSv4.1 Get Device Info. 4905 */ 4906 int 4907 nfsrpc_getdeviceinfo(struct nfsmount *nmp, uint8_t *deviceid, int layouttype, 4908 uint32_t *notifybitsp, struct nfscldevinfo **ndip, struct ucred *cred, 4909 NFSPROC_T *p) 4910 { 4911 uint32_t cnt, *tl; 4912 struct nfsrv_descript nfsd; 4913 struct nfsrv_descript *nd = &nfsd; 4914 struct sockaddr_storage ss; 4915 struct nfsclds *dsp = NULL, **dspp; 4916 struct nfscldevinfo *ndi; 4917 int addrcnt, bitcnt, error, i, isudp, j, pos, safilled, stripecnt; 4918 uint8_t stripeindex; 4919 4920 *ndip = NULL; 4921 ndi = NULL; 4922 nfscl_reqstart(nd, NFSPROC_GETDEVICEINFO, nmp, NULL, 0, NULL, NULL); 4923 NFSM_BUILD(tl, uint32_t *, NFSX_V4DEVICEID + 3 * NFSX_UNSIGNED); 4924 NFSBCOPY(deviceid, tl, NFSX_V4DEVICEID); 4925 tl += (NFSX_V4DEVICEID / NFSX_UNSIGNED); 4926 *tl++ = txdr_unsigned(layouttype); 4927 *tl++ = txdr_unsigned(100000); 4928 if (notifybitsp != NULL && *notifybitsp != 0) { 4929 *tl = txdr_unsigned(1); /* One word of bits. */ 4930 NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED); 4931 *tl = txdr_unsigned(*notifybitsp); 4932 } else 4933 *tl = txdr_unsigned(0); 4934 nd->nd_flag |= ND_USEGSSNAME; 4935 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 4936 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4937 if (error != 0) 4938 return (error); 4939 if (nd->nd_repstat == 0) { 4940 NFSM_DISSECT(tl, uint32_t *, 3 * NFSX_UNSIGNED); 4941 if (layouttype != fxdr_unsigned(int, *tl++)) 4942 printf("EEK! devinfo layout type not same!\n"); 4943 stripecnt = fxdr_unsigned(int, *++tl); 4944 NFSCL_DEBUG(4, "stripecnt=%d\n", stripecnt); 4945 if (stripecnt < 1 || stripecnt > 4096) { 4946 printf("NFS devinfo stripecnt %d: out of range\n", 4947 stripecnt); 4948 error = NFSERR_BADXDR; 4949 goto nfsmout; 4950 } 4951 NFSM_DISSECT(tl, uint32_t *, (stripecnt + 1) * NFSX_UNSIGNED); 4952 addrcnt = fxdr_unsigned(int, *(tl + stripecnt)); 4953 NFSCL_DEBUG(4, "addrcnt=%d\n", addrcnt); 4954 if (addrcnt < 1 || addrcnt > 128) { 4955 printf("NFS devinfo addrcnt %d: out of range\n", 4956 addrcnt); 4957 error = NFSERR_BADXDR; 4958 goto nfsmout; 4959 } 4960 4961 /* 4962 * Now we know how many stripe indices and addresses, so 4963 * we can allocate the structure the correct size. 4964 */ 4965 i = (stripecnt * sizeof(uint8_t)) / sizeof(struct nfsclds *) 4966 + 1; 4967 NFSCL_DEBUG(4, "stripeindices=%d\n", i); 4968 ndi = malloc(sizeof(*ndi) + (addrcnt + i) * 4969 sizeof(struct nfsclds *), M_NFSDEVINFO, M_WAITOK | M_ZERO); 4970 NFSBCOPY(deviceid, ndi->nfsdi_deviceid, NFSX_V4DEVICEID); 4971 ndi->nfsdi_refcnt = 0; 4972 ndi->nfsdi_stripecnt = stripecnt; 4973 ndi->nfsdi_addrcnt = addrcnt; 4974 /* Fill in the stripe indices. */ 4975 for (i = 0; i < stripecnt; i++) { 4976 stripeindex = fxdr_unsigned(uint8_t, *tl++); 4977 NFSCL_DEBUG(4, "stripeind=%d\n", stripeindex); 4978 if (stripeindex >= addrcnt) { 4979 printf("NFS devinfo stripeindex %d: too big\n", 4980 (int)stripeindex); 4981 error = NFSERR_BADXDR; 4982 goto nfsmout; 4983 } 4984 nfsfldi_setstripeindex(ndi, i, stripeindex); 4985 } 4986 4987 /* Now, dissect the server address(es). */ 4988 safilled = 0; 4989 for (i = 0; i < addrcnt; i++) { 4990 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 4991 cnt = fxdr_unsigned(uint32_t, *tl); 4992 if (cnt == 0) { 4993 printf("NFS devinfo 0 len addrlist\n"); 4994 error = NFSERR_BADXDR; 4995 goto nfsmout; 4996 } 4997 dspp = nfsfldi_addr(ndi, i); 4998 pos = arc4random() % cnt; /* Choose one. */ 4999 safilled = 0; 5000 for (j = 0; j < cnt; j++) { 5001 error = nfsv4_getipaddr(nd, &ss, &isudp); 5002 if (error != 0 && error != EPERM) { 5003 error = NFSERR_BADXDR; 5004 goto nfsmout; 5005 } 5006 if (error == 0 && isudp == 0) { 5007 /* 5008 * The algorithm is: 5009 * - use "pos" entry if it is of the 5010 * same af_family or none of them 5011 * is of the same af_family 5012 * else 5013 * - use the first one of the same 5014 * af_family. 5015 */ 5016 if ((safilled == 0 && ss.ss_family == 5017 nmp->nm_nam->sa_family) || 5018 (j == pos && 5019 (safilled == 0 || ss.ss_family == 5020 nmp->nm_nam->sa_family)) || 5021 (safilled == 1 && ss.ss_family == 5022 nmp->nm_nam->sa_family)) { 5023 error = nfsrpc_fillsa(nmp, &ss, 5024 &dsp, p); 5025 if (error == 0) { 5026 *dspp = dsp; 5027 if (ss.ss_family == 5028 nmp->nm_nam->sa_family) 5029 safilled = 2; 5030 else 5031 safilled = 1; 5032 } 5033 } 5034 } 5035 } 5036 if (safilled == 0) 5037 break; 5038 } 5039 5040 /* And the notify bits. */ 5041 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 5042 if (safilled != 0) { 5043 bitcnt = fxdr_unsigned(int, *tl); 5044 if (bitcnt > 0) { 5045 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 5046 if (notifybitsp != NULL) 5047 *notifybitsp = 5048 fxdr_unsigned(uint32_t, *tl); 5049 } 5050 *ndip = ndi; 5051 } else 5052 error = EPERM; 5053 } 5054 if (nd->nd_repstat != 0) 5055 error = nd->nd_repstat; 5056 nfsmout: 5057 if (error != 0 && ndi != NULL) 5058 nfscl_freedevinfo(ndi); 5059 mbuf_freem(nd->nd_mrep); 5060 return (error); 5061 } 5062 5063 /* 5064 * Do the NFSv4.1 LayoutCommit. 5065 */ 5066 int 5067 nfsrpc_layoutcommit(struct nfsmount *nmp, uint8_t *fh, int fhlen, int reclaim, 5068 uint64_t off, uint64_t len, uint64_t lastbyte, nfsv4stateid_t *stateidp, 5069 int layouttype, int layoutupdatecnt, uint8_t *layp, struct ucred *cred, 5070 NFSPROC_T *p, void *stuff) 5071 { 5072 uint32_t *tl; 5073 struct nfsrv_descript nfsd, *nd = &nfsd; 5074 int error, outcnt, i; 5075 uint8_t *cp; 5076 5077 nfscl_reqstart(nd, NFSPROC_LAYOUTCOMMIT, nmp, fh, fhlen, NULL, NULL); 5078 NFSM_BUILD(tl, uint32_t *, 5 * NFSX_UNSIGNED + 3 * NFSX_HYPER + 5079 NFSX_STATEID); 5080 txdr_hyper(off, tl); 5081 tl += 2; 5082 txdr_hyper(len, tl); 5083 tl += 2; 5084 if (reclaim != 0) 5085 *tl++ = newnfs_true; 5086 else 5087 *tl++ = newnfs_false; 5088 *tl++ = txdr_unsigned(stateidp->seqid); 5089 *tl++ = stateidp->other[0]; 5090 *tl++ = stateidp->other[1]; 5091 *tl++ = stateidp->other[2]; 5092 *tl++ = newnfs_true; 5093 if (lastbyte < off) 5094 lastbyte = off; 5095 else if (lastbyte >= (off + len)) 5096 lastbyte = off + len - 1; 5097 txdr_hyper(lastbyte, tl); 5098 tl += 2; 5099 *tl++ = newnfs_false; 5100 *tl++ = txdr_unsigned(layouttype); 5101 *tl = txdr_unsigned(layoutupdatecnt); 5102 if (layoutupdatecnt > 0) { 5103 KASSERT(layouttype != NFSLAYOUT_NFSV4_1_FILES, 5104 ("Must be nil for Files Layout")); 5105 outcnt = NFSM_RNDUP(layoutupdatecnt); 5106 NFSM_BUILD(cp, uint8_t *, outcnt); 5107 NFSBCOPY(layp, cp, layoutupdatecnt); 5108 cp += layoutupdatecnt; 5109 for (i = 0; i < (outcnt - layoutupdatecnt); i++) 5110 *cp++ = 0x0; 5111 } 5112 nd->nd_flag |= ND_USEGSSNAME; 5113 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 5114 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 5115 if (error != 0) 5116 return (error); 5117 error = nd->nd_repstat; 5118 mbuf_freem(nd->nd_mrep); 5119 return (error); 5120 } 5121 5122 /* 5123 * Do the NFSv4.1 LayoutReturn. 5124 */ 5125 int 5126 nfsrpc_layoutreturn(struct nfsmount *nmp, uint8_t *fh, int fhlen, int reclaim, 5127 int layouttype, uint32_t iomode, int layoutreturn, uint64_t offset, 5128 uint64_t len, nfsv4stateid_t *stateidp, int layoutcnt, uint32_t *layp, 5129 struct ucred *cred, NFSPROC_T *p, void *stuff) 5130 { 5131 uint32_t *tl; 5132 struct nfsrv_descript nfsd, *nd = &nfsd; 5133 int error, outcnt, i; 5134 uint8_t *cp; 5135 5136 nfscl_reqstart(nd, NFSPROC_LAYOUTRETURN, nmp, fh, fhlen, NULL, NULL); 5137 NFSM_BUILD(tl, uint32_t *, 4 * NFSX_UNSIGNED); 5138 if (reclaim != 0) 5139 *tl++ = newnfs_true; 5140 else 5141 *tl++ = newnfs_false; 5142 *tl++ = txdr_unsigned(layouttype); 5143 *tl++ = txdr_unsigned(iomode); 5144 *tl = txdr_unsigned(layoutreturn); 5145 if (layoutreturn == NFSLAYOUTRETURN_FILE) { 5146 NFSM_BUILD(tl, uint32_t *, 2 * NFSX_HYPER + NFSX_STATEID + 5147 NFSX_UNSIGNED); 5148 txdr_hyper(offset, tl); 5149 tl += 2; 5150 txdr_hyper(len, tl); 5151 tl += 2; 5152 NFSCL_DEBUG(4, "layoutret stseq=%d\n", (int)stateidp->seqid); 5153 *tl++ = txdr_unsigned(stateidp->seqid); 5154 *tl++ = stateidp->other[0]; 5155 *tl++ = stateidp->other[1]; 5156 *tl++ = stateidp->other[2]; 5157 *tl = txdr_unsigned(layoutcnt); 5158 if (layoutcnt > 0) { 5159 outcnt = NFSM_RNDUP(layoutcnt); 5160 NFSM_BUILD(cp, uint8_t *, outcnt); 5161 NFSBCOPY(layp, cp, layoutcnt); 5162 cp += layoutcnt; 5163 for (i = 0; i < (outcnt - layoutcnt); i++) 5164 *cp++ = 0x0; 5165 } 5166 } 5167 nd->nd_flag |= ND_USEGSSNAME; 5168 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 5169 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 5170 if (error != 0) 5171 return (error); 5172 if (nd->nd_repstat == 0) { 5173 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 5174 if (*tl != 0) { 5175 NFSM_DISSECT(tl, uint32_t *, NFSX_STATEID); 5176 stateidp->seqid = fxdr_unsigned(uint32_t, *tl++); 5177 stateidp->other[0] = *tl++; 5178 stateidp->other[1] = *tl++; 5179 stateidp->other[2] = *tl; 5180 } 5181 } else 5182 error = nd->nd_repstat; 5183 nfsmout: 5184 mbuf_freem(nd->nd_mrep); 5185 return (error); 5186 } 5187 5188 /* 5189 * Acquire a layout and devinfo, if possible. The caller must have acquired 5190 * a reference count on the nfsclclient structure before calling this. 5191 * Return the layout in lypp with a reference count on it, if successful. 5192 */ 5193 static int 5194 nfsrpc_getlayout(struct nfsmount *nmp, vnode_t vp, struct nfsfh *nfhp, 5195 int iomode, uint32_t *notifybitsp, nfsv4stateid_t *stateidp, uint64_t off, 5196 struct nfscllayout **lypp, struct ucred *cred, NFSPROC_T *p) 5197 { 5198 struct nfscllayout *lyp; 5199 struct nfsclflayout *flp, *tflp; 5200 struct nfscldevinfo *dip; 5201 struct nfsclflayouthead flh; 5202 int error = 0, islocked, layoutlen, recalled, retonclose; 5203 nfsv4stateid_t stateid; 5204 struct nfsclsession *tsep; 5205 5206 *lypp = NULL; 5207 /* 5208 * If lyp is returned non-NULL, there will be a refcnt (shared lock) 5209 * on it, iff flp != NULL or a lock (exclusive lock) on it iff 5210 * flp == NULL. 5211 */ 5212 lyp = nfscl_getlayout(nmp->nm_clp, nfhp->nfh_fh, nfhp->nfh_len, 5213 off, &flp, &recalled); 5214 islocked = 0; 5215 if (lyp == NULL || flp == NULL) { 5216 if (recalled != 0) 5217 return (EIO); 5218 LIST_INIT(&flh); 5219 tsep = nfsmnt_mdssession(nmp); 5220 layoutlen = tsep->nfsess_maxcache - 5221 (NFSX_STATEID + 3 * NFSX_UNSIGNED); 5222 if (lyp == NULL) { 5223 stateid.seqid = 0; 5224 stateid.other[0] = stateidp->other[0]; 5225 stateid.other[1] = stateidp->other[1]; 5226 stateid.other[2] = stateidp->other[2]; 5227 error = nfsrpc_layoutget(nmp, nfhp->nfh_fh, 5228 nfhp->nfh_len, iomode, (uint64_t)0, INT64_MAX, 5229 (uint64_t)0, layoutlen, &stateid, &retonclose, 5230 &flh, cred, p, NULL); 5231 } else { 5232 islocked = 1; 5233 stateid.seqid = lyp->nfsly_stateid.seqid; 5234 stateid.other[0] = lyp->nfsly_stateid.other[0]; 5235 stateid.other[1] = lyp->nfsly_stateid.other[1]; 5236 stateid.other[2] = lyp->nfsly_stateid.other[2]; 5237 error = nfsrpc_layoutget(nmp, nfhp->nfh_fh, 5238 nfhp->nfh_len, iomode, off, INT64_MAX, 5239 (uint64_t)0, layoutlen, &stateid, &retonclose, 5240 &flh, cred, p, NULL); 5241 } 5242 if (error == 0) 5243 LIST_FOREACH(tflp, &flh, nfsfl_list) { 5244 error = nfscl_adddevinfo(nmp, NULL, tflp); 5245 if (error != 0) { 5246 error = nfsrpc_getdeviceinfo(nmp, 5247 tflp->nfsfl_dev, 5248 NFSLAYOUT_NFSV4_1_FILES, 5249 notifybitsp, &dip, cred, p); 5250 if (error != 0) 5251 break; 5252 error = nfscl_adddevinfo(nmp, dip, 5253 tflp); 5254 if (error != 0) 5255 printf( 5256 "getlayout: cannot add\n"); 5257 } 5258 } 5259 if (error == 0) { 5260 /* 5261 * nfscl_layout() always returns with the nfsly_lock 5262 * set to a refcnt (shared lock). 5263 */ 5264 error = nfscl_layout(nmp, vp, nfhp->nfh_fh, 5265 nfhp->nfh_len, &stateid, retonclose, &flh, &lyp, 5266 cred, p); 5267 if (error == 0) 5268 *lypp = lyp; 5269 } else if (islocked != 0) 5270 nfsv4_unlock(&lyp->nfsly_lock, 0); 5271 } else 5272 *lypp = lyp; 5273 return (error); 5274 } 5275 5276 /* 5277 * Do a TCP connection plus exchange id and create session. 5278 * If successful, a "struct nfsclds" is linked into the list for the 5279 * mount point and a pointer to it is returned. 5280 */ 5281 static int 5282 nfsrpc_fillsa(struct nfsmount *nmp, struct sockaddr_storage *ssp, 5283 struct nfsclds **dspp, NFSPROC_T *p) 5284 { 5285 struct sockaddr_in *msad, *sad, *ssd; 5286 struct sockaddr_in6 *msad6, *sad6, *ssd6; 5287 struct nfsclclient *clp; 5288 struct nfssockreq *nrp; 5289 struct nfsclds *dsp, *tdsp; 5290 int error; 5291 enum nfsclds_state retv; 5292 uint32_t sequenceid; 5293 5294 KASSERT(nmp->nm_sockreq.nr_cred != NULL, 5295 ("nfsrpc_fillsa: NULL nr_cred")); 5296 NFSLOCKCLSTATE(); 5297 clp = nmp->nm_clp; 5298 NFSUNLOCKCLSTATE(); 5299 if (clp == NULL) 5300 return (EPERM); 5301 if (ssp->ss_family == AF_INET) { 5302 ssd = (struct sockaddr_in *)ssp; 5303 NFSLOCKMNT(nmp); 5304 5305 /* 5306 * Check to see if we already have a session for this 5307 * address that is usable for a DS. 5308 * Note that the MDS's address is in a different place 5309 * than the sessions already acquired for DS's. 5310 */ 5311 msad = (struct sockaddr_in *)nmp->nm_sockreq.nr_nam; 5312 tdsp = TAILQ_FIRST(&nmp->nm_sess); 5313 while (tdsp != NULL) { 5314 if (msad != NULL && msad->sin_family == AF_INET && 5315 ssd->sin_addr.s_addr == msad->sin_addr.s_addr && 5316 ssd->sin_port == msad->sin_port && 5317 (tdsp->nfsclds_flags & NFSCLDS_DS) != 0 && 5318 tdsp->nfsclds_sess.nfsess_defunct == 0) { 5319 *dspp = tdsp; 5320 NFSUNLOCKMNT(nmp); 5321 NFSCL_DEBUG(4, "fnd same addr\n"); 5322 return (0); 5323 } 5324 tdsp = TAILQ_NEXT(tdsp, nfsclds_list); 5325 if (tdsp != NULL && tdsp->nfsclds_sockp != NULL) 5326 msad = (struct sockaddr_in *) 5327 tdsp->nfsclds_sockp->nr_nam; 5328 else 5329 msad = NULL; 5330 } 5331 NFSUNLOCKMNT(nmp); 5332 5333 /* No IP address match, so look for new/trunked one. */ 5334 sad = malloc(sizeof(*sad), M_SONAME, M_WAITOK | M_ZERO); 5335 sad->sin_len = sizeof(*sad); 5336 sad->sin_family = AF_INET; 5337 sad->sin_port = ssd->sin_port; 5338 sad->sin_addr.s_addr = ssd->sin_addr.s_addr; 5339 nrp = malloc(sizeof(*nrp), M_NFSSOCKREQ, M_WAITOK | M_ZERO); 5340 nrp->nr_nam = (struct sockaddr *)sad; 5341 } else if (ssp->ss_family == AF_INET6) { 5342 ssd6 = (struct sockaddr_in6 *)ssp; 5343 NFSLOCKMNT(nmp); 5344 5345 /* 5346 * Check to see if we already have a session for this 5347 * address that is usable for a DS. 5348 * Note that the MDS's address is in a different place 5349 * than the sessions already acquired for DS's. 5350 */ 5351 msad6 = (struct sockaddr_in6 *)nmp->nm_sockreq.nr_nam; 5352 tdsp = TAILQ_FIRST(&nmp->nm_sess); 5353 while (tdsp != NULL) { 5354 if (msad6 != NULL && msad6->sin6_family == AF_INET6 && 5355 IN6_ARE_ADDR_EQUAL(&ssd6->sin6_addr, 5356 &msad6->sin6_addr) && 5357 ssd6->sin6_port == msad6->sin6_port && 5358 (tdsp->nfsclds_flags & NFSCLDS_DS) != 0 && 5359 tdsp->nfsclds_sess.nfsess_defunct == 0) { 5360 *dspp = tdsp; 5361 NFSUNLOCKMNT(nmp); 5362 return (0); 5363 } 5364 tdsp = TAILQ_NEXT(tdsp, nfsclds_list); 5365 if (tdsp != NULL && tdsp->nfsclds_sockp != NULL) 5366 msad6 = (struct sockaddr_in6 *) 5367 tdsp->nfsclds_sockp->nr_nam; 5368 else 5369 msad6 = NULL; 5370 } 5371 NFSUNLOCKMNT(nmp); 5372 5373 /* No IP address match, so look for new/trunked one. */ 5374 sad6 = malloc(sizeof(*sad6), M_SONAME, M_WAITOK | M_ZERO); 5375 sad6->sin6_len = sizeof(*sad6); 5376 sad6->sin6_family = AF_INET6; 5377 sad6->sin6_port = ssd6->sin6_port; 5378 NFSBCOPY(&ssd6->sin6_addr, &sad6->sin6_addr, 5379 sizeof(struct in6_addr)); 5380 nrp = malloc(sizeof(*nrp), M_NFSSOCKREQ, M_WAITOK | M_ZERO); 5381 nrp->nr_nam = (struct sockaddr *)sad6; 5382 } else 5383 return (EPERM); 5384 5385 nrp->nr_sotype = SOCK_STREAM; 5386 mtx_init(&nrp->nr_mtx, "nfssock", NULL, MTX_DEF); 5387 nrp->nr_prog = NFS_PROG; 5388 nrp->nr_vers = NFS_VER4; 5389 5390 /* 5391 * Use the credentials that were used for the mount, which are 5392 * in nmp->nm_sockreq.nr_cred for newnfs_connect() etc. 5393 * Ref. counting the credentials with crhold() is probably not 5394 * necessary, since nm_sockreq.nr_cred won't be crfree()'d until 5395 * unmount, but I did it anyhow. 5396 */ 5397 nrp->nr_cred = crhold(nmp->nm_sockreq.nr_cred); 5398 error = newnfs_connect(nmp, nrp, NULL, p, 0); 5399 NFSCL_DEBUG(3, "DS connect=%d\n", error); 5400 5401 /* Now, do the exchangeid and create session. */ 5402 if (error == 0) 5403 error = nfsrpc_exchangeid(nmp, clp, nrp, NFSV4EXCH_USEPNFSDS, 5404 &dsp, nrp->nr_cred, p); 5405 NFSCL_DEBUG(3, "DS exchangeid=%d\n", error); 5406 if (error == 0) { 5407 dsp->nfsclds_sockp = nrp; 5408 NFSLOCKMNT(nmp); 5409 retv = nfscl_getsameserver(nmp, dsp, &tdsp); 5410 NFSCL_DEBUG(3, "getsame ret=%d\n", retv); 5411 if (retv == NFSDSP_USETHISSESSION) { 5412 NFSUNLOCKMNT(nmp); 5413 /* 5414 * If there is already a session for this server, 5415 * use it. 5416 */ 5417 (void)newnfs_disconnect(nrp); 5418 nfscl_freenfsclds(dsp); 5419 *dspp = tdsp; 5420 return (0); 5421 } 5422 if (retv == NFSDSP_SEQTHISSESSION) 5423 sequenceid = tdsp->nfsclds_sess.nfsess_sequenceid; 5424 else 5425 sequenceid = dsp->nfsclds_sess.nfsess_sequenceid; 5426 NFSUNLOCKMNT(nmp); 5427 error = nfsrpc_createsession(nmp, &dsp->nfsclds_sess, 5428 nrp, sequenceid, 0, nrp->nr_cred, p); 5429 NFSCL_DEBUG(3, "DS createsess=%d\n", error); 5430 } else { 5431 NFSFREECRED(nrp->nr_cred); 5432 NFSFREEMUTEX(&nrp->nr_mtx); 5433 free(nrp->nr_nam, M_SONAME); 5434 free(nrp, M_NFSSOCKREQ); 5435 } 5436 if (error == 0) { 5437 NFSCL_DEBUG(3, "add DS session\n"); 5438 /* 5439 * Put it at the end of the list. That way the list 5440 * is ordered by when the entry was added. This matters 5441 * since the one done first is the one that should be 5442 * used for sequencid'ing any subsequent create sessions. 5443 */ 5444 NFSLOCKMNT(nmp); 5445 TAILQ_INSERT_TAIL(&nmp->nm_sess, dsp, nfsclds_list); 5446 NFSUNLOCKMNT(nmp); 5447 *dspp = dsp; 5448 } else if (dsp != NULL) 5449 nfscl_freenfsclds(dsp); 5450 return (error); 5451 } 5452 5453 /* 5454 * Do the NFSv4.1 Reclaim Complete. 5455 */ 5456 int 5457 nfsrpc_reclaimcomplete(struct nfsmount *nmp, struct ucred *cred, NFSPROC_T *p) 5458 { 5459 uint32_t *tl; 5460 struct nfsrv_descript nfsd; 5461 struct nfsrv_descript *nd = &nfsd; 5462 int error; 5463 5464 nfscl_reqstart(nd, NFSPROC_RECLAIMCOMPL, nmp, NULL, 0, NULL, NULL); 5465 NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED); 5466 *tl = newnfs_false; 5467 nd->nd_flag |= ND_USEGSSNAME; 5468 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 5469 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 5470 if (error != 0) 5471 return (error); 5472 error = nd->nd_repstat; 5473 mbuf_freem(nd->nd_mrep); 5474 return (error); 5475 } 5476 5477 /* 5478 * Initialize the slot tables for a session. 5479 */ 5480 static void 5481 nfscl_initsessionslots(struct nfsclsession *sep) 5482 { 5483 int i; 5484 5485 for (i = 0; i < NFSV4_CBSLOTS; i++) { 5486 if (sep->nfsess_cbslots[i].nfssl_reply != NULL) 5487 m_freem(sep->nfsess_cbslots[i].nfssl_reply); 5488 NFSBZERO(&sep->nfsess_cbslots[i], sizeof(struct nfsslot)); 5489 } 5490 for (i = 0; i < 64; i++) 5491 sep->nfsess_slotseq[i] = 0; 5492 sep->nfsess_slots = 0; 5493 } 5494 5495 /* 5496 * Called to try and do an I/O operation via an NFSv4.1 Data Server (DS). 5497 */ 5498 int 5499 nfscl_doiods(vnode_t vp, struct uio *uiop, int *iomode, int *must_commit, 5500 uint32_t rwaccess, struct ucred *cred, NFSPROC_T *p) 5501 { 5502 struct nfsnode *np = VTONFS(vp); 5503 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 5504 struct nfscllayout *layp; 5505 struct nfscldevinfo *dip; 5506 struct nfsclflayout *rflp; 5507 nfsv4stateid_t stateid; 5508 struct ucred *newcred; 5509 uint64_t lastbyte, len, off, oresid, xfer; 5510 int eof, error, iolaymode, recalled; 5511 void *lckp; 5512 5513 if (!NFSHASPNFS(nmp) || nfscl_enablecallb == 0 || nfs_numnfscbd == 0 || 5514 (np->n_flag & NNOLAYOUT) != 0) 5515 return (EIO); 5516 /* Now, get a reference cnt on the clientid for this mount. */ 5517 if (nfscl_getref(nmp) == 0) 5518 return (EIO); 5519 5520 /* Find an appropriate stateid. */ 5521 newcred = NFSNEWCRED(cred); 5522 error = nfscl_getstateid(vp, np->n_fhp->nfh_fh, np->n_fhp->nfh_len, 5523 rwaccess, 1, newcred, p, &stateid, &lckp); 5524 if (error != 0) { 5525 NFSFREECRED(newcred); 5526 nfscl_relref(nmp); 5527 return (error); 5528 } 5529 /* Search for a layout for this file. */ 5530 off = uiop->uio_offset; 5531 layp = nfscl_getlayout(nmp->nm_clp, np->n_fhp->nfh_fh, 5532 np->n_fhp->nfh_len, off, &rflp, &recalled); 5533 if (layp == NULL || rflp == NULL) { 5534 if (recalled != 0) { 5535 NFSFREECRED(newcred); 5536 nfscl_relref(nmp); 5537 return (EIO); 5538 } 5539 if (layp != NULL) { 5540 nfscl_rellayout(layp, (rflp == NULL) ? 1 : 0); 5541 layp = NULL; 5542 } 5543 /* Try and get a Layout, if it is supported. */ 5544 if (rwaccess == NFSV4OPEN_ACCESSWRITE || 5545 (np->n_flag & NWRITEOPENED) != 0) 5546 iolaymode = NFSLAYOUTIOMODE_RW; 5547 else 5548 iolaymode = NFSLAYOUTIOMODE_READ; 5549 error = nfsrpc_getlayout(nmp, vp, np->n_fhp, iolaymode, 5550 NULL, &stateid, off, &layp, newcred, p); 5551 if (error != 0) { 5552 NFSLOCKNODE(np); 5553 np->n_flag |= NNOLAYOUT; 5554 NFSUNLOCKNODE(np); 5555 if (lckp != NULL) 5556 nfscl_lockderef(lckp); 5557 NFSFREECRED(newcred); 5558 if (layp != NULL) 5559 nfscl_rellayout(layp, 0); 5560 nfscl_relref(nmp); 5561 return (error); 5562 } 5563 } 5564 5565 /* 5566 * Loop around finding a layout that works for the first part of 5567 * this I/O operation, and then call the function that actually 5568 * does the RPC. 5569 */ 5570 eof = 0; 5571 len = (uint64_t)uiop->uio_resid; 5572 while (len > 0 && error == 0 && eof == 0) { 5573 off = uiop->uio_offset; 5574 error = nfscl_findlayoutforio(layp, off, rwaccess, &rflp); 5575 if (error == 0) { 5576 oresid = xfer = (uint64_t)uiop->uio_resid; 5577 if (xfer > (rflp->nfsfl_end - rflp->nfsfl_off)) 5578 xfer = rflp->nfsfl_end - rflp->nfsfl_off; 5579 dip = nfscl_getdevinfo(nmp->nm_clp, rflp->nfsfl_dev, 5580 rflp->nfsfl_devp); 5581 if (dip != NULL) { 5582 error = nfscl_doflayoutio(vp, uiop, iomode, 5583 must_commit, &eof, &stateid, rwaccess, dip, 5584 layp, rflp, off, xfer, newcred, p); 5585 nfscl_reldevinfo(dip); 5586 lastbyte = off + xfer - 1; 5587 if (error == 0) { 5588 NFSLOCKCLSTATE(); 5589 if (lastbyte > layp->nfsly_lastbyte) 5590 layp->nfsly_lastbyte = lastbyte; 5591 NFSUNLOCKCLSTATE(); 5592 } 5593 } else 5594 error = EIO; 5595 if (error == 0) 5596 len -= (oresid - (uint64_t)uiop->uio_resid); 5597 } 5598 } 5599 if (lckp != NULL) 5600 nfscl_lockderef(lckp); 5601 NFSFREECRED(newcred); 5602 nfscl_rellayout(layp, 0); 5603 nfscl_relref(nmp); 5604 return (error); 5605 } 5606 5607 /* 5608 * Find a file layout that will handle the first bytes of the requested 5609 * range and return the information from it needed to to the I/O operation. 5610 */ 5611 int 5612 nfscl_findlayoutforio(struct nfscllayout *lyp, uint64_t off, uint32_t rwaccess, 5613 struct nfsclflayout **retflpp) 5614 { 5615 struct nfsclflayout *flp, *nflp, *rflp; 5616 uint32_t rw; 5617 5618 rflp = NULL; 5619 rw = rwaccess; 5620 /* For reading, do the Read list first and then the Write list. */ 5621 do { 5622 if (rw == NFSV4OPEN_ACCESSREAD) 5623 flp = LIST_FIRST(&lyp->nfsly_flayread); 5624 else 5625 flp = LIST_FIRST(&lyp->nfsly_flayrw); 5626 while (flp != NULL) { 5627 nflp = LIST_NEXT(flp, nfsfl_list); 5628 if (flp->nfsfl_off > off) 5629 break; 5630 if (flp->nfsfl_end > off && 5631 (rflp == NULL || rflp->nfsfl_end < flp->nfsfl_end)) 5632 rflp = flp; 5633 flp = nflp; 5634 } 5635 if (rw == NFSV4OPEN_ACCESSREAD) 5636 rw = NFSV4OPEN_ACCESSWRITE; 5637 else 5638 rw = 0; 5639 } while (rw != 0); 5640 if (rflp != NULL) { 5641 /* This one covers the most bytes starting at off. */ 5642 *retflpp = rflp; 5643 return (0); 5644 } 5645 return (EIO); 5646 } 5647 5648 /* 5649 * Do I/O using an NFSv4.1 file layout. 5650 */ 5651 static int 5652 nfscl_doflayoutio(vnode_t vp, struct uio *uiop, int *iomode, int *must_commit, 5653 int *eofp, nfsv4stateid_t *stateidp, int rwflag, struct nfscldevinfo *dp, 5654 struct nfscllayout *lyp, struct nfsclflayout *flp, uint64_t off, 5655 uint64_t len, struct ucred *cred, NFSPROC_T *p) 5656 { 5657 uint64_t io_off, rel_off, stripe_unit_size, transfer, xfer; 5658 int commit_thru_mds, error = 0, stripe_index, stripe_pos; 5659 struct nfsnode *np; 5660 struct nfsfh *fhp; 5661 struct nfsclds **dspp; 5662 5663 np = VTONFS(vp); 5664 rel_off = off - flp->nfsfl_patoff; 5665 stripe_unit_size = (flp->nfsfl_util >> 6) & 0x3ffffff; 5666 stripe_pos = (rel_off / stripe_unit_size + flp->nfsfl_stripe1) % 5667 dp->nfsdi_stripecnt; 5668 transfer = stripe_unit_size - (rel_off % stripe_unit_size); 5669 5670 /* Loop around, doing I/O for each stripe unit. */ 5671 while (len > 0 && error == 0) { 5672 stripe_index = nfsfldi_stripeindex(dp, stripe_pos); 5673 dspp = nfsfldi_addr(dp, stripe_index); 5674 if (len > transfer) 5675 xfer = transfer; 5676 else 5677 xfer = len; 5678 if ((flp->nfsfl_util & NFSFLAYUTIL_DENSE) != 0) { 5679 /* Dense layout. */ 5680 if (stripe_pos >= flp->nfsfl_fhcnt) 5681 return (EIO); 5682 fhp = flp->nfsfl_fh[stripe_pos]; 5683 io_off = (rel_off / (stripe_unit_size * 5684 dp->nfsdi_stripecnt)) * stripe_unit_size + 5685 rel_off % stripe_unit_size; 5686 } else { 5687 /* Sparse layout. */ 5688 if (flp->nfsfl_fhcnt > 1) { 5689 if (stripe_index >= flp->nfsfl_fhcnt) 5690 return (EIO); 5691 fhp = flp->nfsfl_fh[stripe_index]; 5692 } else if (flp->nfsfl_fhcnt == 1) 5693 fhp = flp->nfsfl_fh[0]; 5694 else 5695 fhp = np->n_fhp; 5696 io_off = off; 5697 } 5698 if ((flp->nfsfl_util & NFSFLAYUTIL_COMMIT_THRU_MDS) != 0) 5699 commit_thru_mds = 1; 5700 else 5701 commit_thru_mds = 0; 5702 if (rwflag == FREAD) 5703 error = nfsrpc_readds(vp, uiop, stateidp, eofp, *dspp, 5704 io_off, xfer, fhp, cred, p); 5705 else { 5706 error = nfsrpc_writeds(vp, uiop, iomode, must_commit, 5707 stateidp, *dspp, io_off, xfer, fhp, commit_thru_mds, 5708 cred, p); 5709 if (error == 0) { 5710 NFSLOCKCLSTATE(); 5711 lyp->nfsly_flags |= NFSLY_WRITTEN; 5712 NFSUNLOCKCLSTATE(); 5713 } 5714 } 5715 if (error == 0) { 5716 transfer = stripe_unit_size; 5717 stripe_pos = (stripe_pos + 1) % dp->nfsdi_stripecnt; 5718 len -= xfer; 5719 off += xfer; 5720 } 5721 } 5722 return (error); 5723 } 5724 5725 /* 5726 * The actual read RPC done to a DS. 5727 */ 5728 static int 5729 nfsrpc_readds(vnode_t vp, struct uio *uiop, nfsv4stateid_t *stateidp, int *eofp, 5730 struct nfsclds *dsp, uint64_t io_off, int len, struct nfsfh *fhp, 5731 struct ucred *cred, NFSPROC_T *p) 5732 { 5733 uint32_t *tl; 5734 int error, retlen; 5735 struct nfsrv_descript nfsd; 5736 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 5737 struct nfsrv_descript *nd = &nfsd; 5738 struct nfssockreq *nrp; 5739 5740 nd->nd_mrep = NULL; 5741 nfscl_reqstart(nd, NFSPROC_READDS, nmp, fhp->nfh_fh, fhp->nfh_len, 5742 NULL, &dsp->nfsclds_sess); 5743 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSEQIDZERO); 5744 NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED * 3); 5745 txdr_hyper(io_off, tl); 5746 *(tl + 2) = txdr_unsigned(len); 5747 nrp = dsp->nfsclds_sockp; 5748 if (nrp == NULL) 5749 /* If NULL, use the MDS socket. */ 5750 nrp = &nmp->nm_sockreq; 5751 error = newnfs_request(nd, nmp, NULL, nrp, vp, p, cred, 5752 NFS_PROG, NFS_VER4, NULL, 1, NULL, &dsp->nfsclds_sess); 5753 if (error != 0) 5754 return (error); 5755 if (nd->nd_repstat != 0) { 5756 error = nd->nd_repstat; 5757 goto nfsmout; 5758 } 5759 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 5760 *eofp = fxdr_unsigned(int, *tl); 5761 NFSM_STRSIZ(retlen, len); 5762 error = nfsm_mbufuio(nd, uiop, retlen); 5763 nfsmout: 5764 if (nd->nd_mrep != NULL) 5765 mbuf_freem(nd->nd_mrep); 5766 return (error); 5767 } 5768 5769 /* 5770 * The actual write RPC done to a DS. 5771 */ 5772 static int 5773 nfsrpc_writeds(vnode_t vp, struct uio *uiop, int *iomode, int *must_commit, 5774 nfsv4stateid_t *stateidp, struct nfsclds *dsp, uint64_t io_off, int len, 5775 struct nfsfh *fhp, int commit_thru_mds, struct ucred *cred, NFSPROC_T *p) 5776 { 5777 uint32_t *tl; 5778 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 5779 int error, rlen, commit, committed = NFSWRITE_FILESYNC; 5780 int32_t backup; 5781 struct nfsrv_descript nfsd; 5782 struct nfsrv_descript *nd = &nfsd; 5783 struct nfssockreq *nrp; 5784 5785 KASSERT(uiop->uio_iovcnt == 1, ("nfs: writerpc iovcnt > 1")); 5786 nd->nd_mrep = NULL; 5787 nfscl_reqstart(nd, NFSPROC_WRITEDS, nmp, fhp->nfh_fh, fhp->nfh_len, 5788 NULL, &dsp->nfsclds_sess); 5789 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSEQIDZERO); 5790 NFSM_BUILD(tl, uint32_t *, NFSX_HYPER + 2 * NFSX_UNSIGNED); 5791 txdr_hyper(io_off, tl); 5792 tl += 2; 5793 *tl++ = txdr_unsigned(*iomode); 5794 *tl = txdr_unsigned(len); 5795 nfsm_uiombuf(nd, uiop, len); 5796 nrp = dsp->nfsclds_sockp; 5797 if (nrp == NULL) 5798 /* If NULL, use the MDS socket. */ 5799 nrp = &nmp->nm_sockreq; 5800 error = newnfs_request(nd, nmp, NULL, nrp, vp, p, cred, 5801 NFS_PROG, NFS_VER4, NULL, 1, NULL, &dsp->nfsclds_sess); 5802 if (error != 0) 5803 return (error); 5804 if (nd->nd_repstat != 0) { 5805 /* 5806 * In case the rpc gets retried, roll 5807 * the uio fileds changed by nfsm_uiombuf() 5808 * back. 5809 */ 5810 uiop->uio_offset -= len; 5811 uio_uio_resid_add(uiop, len); 5812 uio_iov_base_add(uiop, -len); 5813 uio_iov_len_add(uiop, len); 5814 error = nd->nd_repstat; 5815 } else { 5816 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED + NFSX_VERF); 5817 rlen = fxdr_unsigned(int, *tl++); 5818 if (rlen == 0) { 5819 error = NFSERR_IO; 5820 goto nfsmout; 5821 } else if (rlen < len) { 5822 backup = len - rlen; 5823 uio_iov_base_add(uiop, -(backup)); 5824 uio_iov_len_add(uiop, backup); 5825 uiop->uio_offset -= backup; 5826 uio_uio_resid_add(uiop, backup); 5827 len = rlen; 5828 } 5829 commit = fxdr_unsigned(int, *tl++); 5830 5831 /* 5832 * Return the lowest commitment level 5833 * obtained by any of the RPCs. 5834 */ 5835 if (committed == NFSWRITE_FILESYNC) 5836 committed = commit; 5837 else if (committed == NFSWRITE_DATASYNC && 5838 commit == NFSWRITE_UNSTABLE) 5839 committed = commit; 5840 if (commit_thru_mds != 0) { 5841 NFSLOCKMNT(nmp); 5842 if (!NFSHASWRITEVERF(nmp)) { 5843 NFSBCOPY(tl, nmp->nm_verf, NFSX_VERF); 5844 NFSSETWRITEVERF(nmp); 5845 } else if (NFSBCMP(tl, nmp->nm_verf, NFSX_VERF)) { 5846 *must_commit = 1; 5847 NFSBCOPY(tl, nmp->nm_verf, NFSX_VERF); 5848 } 5849 NFSUNLOCKMNT(nmp); 5850 } else { 5851 NFSLOCKDS(dsp); 5852 if ((dsp->nfsclds_flags & NFSCLDS_HASWRITEVERF) == 0) { 5853 NFSBCOPY(tl, dsp->nfsclds_verf, NFSX_VERF); 5854 dsp->nfsclds_flags |= NFSCLDS_HASWRITEVERF; 5855 } else if (NFSBCMP(tl, dsp->nfsclds_verf, NFSX_VERF)) { 5856 *must_commit = 1; 5857 NFSBCOPY(tl, dsp->nfsclds_verf, NFSX_VERF); 5858 } 5859 NFSUNLOCKDS(dsp); 5860 } 5861 } 5862 nfsmout: 5863 if (nd->nd_mrep != NULL) 5864 mbuf_freem(nd->nd_mrep); 5865 *iomode = committed; 5866 if (nd->nd_repstat != 0 && error == 0) 5867 error = nd->nd_repstat; 5868 return (error); 5869 } 5870 5871 /* 5872 * Free up the nfsclds structure. 5873 */ 5874 void 5875 nfscl_freenfsclds(struct nfsclds *dsp) 5876 { 5877 int i; 5878 5879 if (dsp == NULL) 5880 return; 5881 if (dsp->nfsclds_sockp != NULL) { 5882 NFSFREECRED(dsp->nfsclds_sockp->nr_cred); 5883 NFSFREEMUTEX(&dsp->nfsclds_sockp->nr_mtx); 5884 free(dsp->nfsclds_sockp->nr_nam, M_SONAME); 5885 free(dsp->nfsclds_sockp, M_NFSSOCKREQ); 5886 } 5887 NFSFREEMUTEX(&dsp->nfsclds_mtx); 5888 NFSFREEMUTEX(&dsp->nfsclds_sess.nfsess_mtx); 5889 for (i = 0; i < NFSV4_CBSLOTS; i++) { 5890 if (dsp->nfsclds_sess.nfsess_cbslots[i].nfssl_reply != NULL) 5891 m_freem( 5892 dsp->nfsclds_sess.nfsess_cbslots[i].nfssl_reply); 5893 } 5894 free(dsp, M_NFSCLDS); 5895 } 5896 5897 static enum nfsclds_state 5898 nfscl_getsameserver(struct nfsmount *nmp, struct nfsclds *newdsp, 5899 struct nfsclds **retdspp) 5900 { 5901 struct nfsclds *dsp, *cur_dsp; 5902 5903 /* 5904 * Search the list of nfsclds structures for one with the same 5905 * server. 5906 */ 5907 cur_dsp = NULL; 5908 TAILQ_FOREACH(dsp, &nmp->nm_sess, nfsclds_list) { 5909 if (dsp->nfsclds_servownlen == newdsp->nfsclds_servownlen && 5910 dsp->nfsclds_servownlen != 0 && 5911 !NFSBCMP(dsp->nfsclds_serverown, newdsp->nfsclds_serverown, 5912 dsp->nfsclds_servownlen) && 5913 dsp->nfsclds_sess.nfsess_defunct == 0) { 5914 NFSCL_DEBUG(4, "fnd same fdsp=%p dsp=%p flg=0x%x\n", 5915 TAILQ_FIRST(&nmp->nm_sess), dsp, 5916 dsp->nfsclds_flags); 5917 /* Server major id matches. */ 5918 if ((dsp->nfsclds_flags & NFSCLDS_DS) != 0) { 5919 *retdspp = dsp; 5920 return (NFSDSP_USETHISSESSION); 5921 } 5922 5923 /* 5924 * Note the first match, so it can be used for 5925 * sequence'ing new sessions. 5926 */ 5927 if (cur_dsp == NULL) 5928 cur_dsp = dsp; 5929 } 5930 } 5931 if (cur_dsp != NULL) { 5932 *retdspp = cur_dsp; 5933 return (NFSDSP_SEQTHISSESSION); 5934 } 5935 return (NFSDSP_NOTFOUND); 5936 } 5937 5938 #ifdef notyet 5939 /* 5940 * NFS commit rpc to a DS. 5941 */ 5942 static int 5943 nfsrpc_commitds(vnode_t vp, uint64_t offset, int cnt, struct nfsclds *dsp, 5944 struct nfsfh *fhp, struct ucred *cred, NFSPROC_T *p, void *stuff) 5945 { 5946 uint32_t *tl; 5947 struct nfsrv_descript nfsd, *nd = &nfsd; 5948 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 5949 struct nfssockreq *nrp; 5950 int error; 5951 5952 nfscl_reqstart(nd, NFSPROC_COMMITDS, nmp, fhp->nfh_fh, fhp->nfh_len, 5953 NULL, &dsp->nfsclds_sess); 5954 NFSM_BUILD(tl, uint32_t *, NFSX_HYPER + NFSX_UNSIGNED); 5955 txdr_hyper(offset, tl); 5956 tl += 2; 5957 *tl = txdr_unsigned(cnt); 5958 nrp = dsp->nfsclds_sockp; 5959 if (nrp == NULL) 5960 /* If NULL, use the MDS socket. */ 5961 nrp = &nmp->nm_sockreq; 5962 error = newnfs_request(nd, nmp, NULL, nrp, vp, p, cred, 5963 NFS_PROG, NFS_VER4, NULL, 1, NULL, &dsp->nfsclds_sess); 5964 if (error) 5965 return (error); 5966 if (nd->nd_repstat == 0) { 5967 NFSM_DISSECT(tl, u_int32_t *, NFSX_VERF); 5968 NFSLOCKDS(dsp); 5969 if (NFSBCMP(tl, dsp->nfsclds_verf, NFSX_VERF)) { 5970 NFSBCOPY(tl, dsp->nfsclds_verf, NFSX_VERF); 5971 error = NFSERR_STALEWRITEVERF; 5972 } 5973 NFSUNLOCKDS(dsp); 5974 } 5975 nfsmout: 5976 if (error == 0 && nd->nd_repstat != 0) 5977 error = nd->nd_repstat; 5978 mbuf_freem(nd->nd_mrep); 5979 return (error); 5980 } 5981 #endif 5982 5983