1 /* $NetBSD: nfs_clrpcops.c,v 1.5 2025/02/27 08:39:53 andvar Exp $ */ 2 /*- 3 * Copyright (c) 1989, 1993 4 * The Regents of the University of California. All rights reserved. 5 * 6 * This code is derived from software contributed to Berkeley by 7 * Rick Macklem at The University of Guelph. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 */ 34 35 #include <sys/cdefs.h> 36 /* __FBSDID("FreeBSD: head/sys/fs/nfsclient/nfs_clrpcops.c 298788 2016-04-29 16:07:25Z pfg "); */ 37 __RCSID("$NetBSD: nfs_clrpcops.c,v 1.5 2025/02/27 08:39:53 andvar Exp $"); 38 39 /* 40 * Rpc op calls, generally called from the vnode op calls or through the 41 * buffer cache, for NFS v2, 3 and 4. 42 * These do not normally make any changes to vnode arguments or use 43 * structures that might change between the VFS variants. The returned 44 * arguments are all at the end, after the NFSPROC_T *p one. 45 */ 46 47 #ifndef APPLEKEXT 48 #ifdef _KERNEL_OPT 49 #include "opt_inet6.h" 50 #endif 51 52 #include <fs/nfs/common/nfsport.h> 53 #include <sys/sysctl.h> 54 55 SYSCTL_DECL(_vfs_nfs); 56 57 static int nfsignore_eexist = 0; 58 SYSCTL_INT(_vfs_nfs, OID_AUTO, ignore_eexist, CTLFLAG_RW, 59 &nfsignore_eexist, 0, "NFS ignore EEXIST replies for mkdir/symlink"); 60 61 /* 62 * Global variables 63 */ 64 extern int nfs_numnfscbd; 65 extern struct timeval nfsboottime; 66 extern u_int32_t newnfs_false, newnfs_true; 67 extern nfstype nfsv34_type[9]; 68 extern int nfsrv_useacl; 69 extern char nfsv4_callbackaddr[INET6_ADDRSTRLEN]; 70 extern int nfscl_debuglevel; 71 NFSCLSTATEMUTEX; 72 int nfstest_outofseq = 0; 73 int nfscl_assumeposixlocks = 1; 74 int nfscl_enablecallb = 0; 75 short nfsv4_cbport = NFSV4_CBPORT; 76 int nfstest_openallsetattr = 0; 77 #endif /* !APPLEKEXT */ 78 79 #define DIRHDSIZ (sizeof (struct dirent) - (MAXNAMLEN + 1)) 80 81 /* 82 * nfscl_getsameserver() can return one of three values: 83 * NFSDSP_USETHISSESSION - Use this session for the DS. 84 * NFSDSP_SEQTHISSESSION - Use the nfsclds_sequence field of this dsp for new 85 * session. 86 * NFSDSP_NOTFOUND - No matching server was found. 87 */ 88 enum nfsclds_state { 89 NFSDSP_USETHISSESSION = 0, 90 NFSDSP_SEQTHISSESSION = 1, 91 NFSDSP_NOTFOUND = 2, 92 }; 93 94 static int nfsrpc_setattrrpc(vnode_t , struct vattr *, nfsv4stateid_t *, 95 struct ucred *, NFSPROC_T *, struct nfsvattr *, int *, void *); 96 static int nfsrpc_readrpc(vnode_t , struct uio *, struct ucred *, 97 nfsv4stateid_t *, NFSPROC_T *, struct nfsvattr *, int *, void *); 98 static int nfsrpc_writerpc(vnode_t , struct uio *, int *, int *, 99 struct ucred *, nfsv4stateid_t *, NFSPROC_T *, struct nfsvattr *, int *, 100 void *); 101 static int nfsrpc_createv23(vnode_t , char *, int, struct vattr *, 102 nfsquad_t, int, struct ucred *, NFSPROC_T *, struct nfsvattr *, 103 struct nfsvattr *, struct nfsfh **, int *, int *, void *); 104 static int nfsrpc_createv4(vnode_t , char *, int, struct vattr *, 105 nfsquad_t, int, struct nfsclowner *, struct nfscldeleg **, struct ucred *, 106 NFSPROC_T *, struct nfsvattr *, struct nfsvattr *, struct nfsfh **, int *, 107 int *, void *, int *); 108 static int nfsrpc_locku(struct nfsrv_descript *, struct nfsmount *, 109 struct nfscllockowner *, u_int64_t, u_int64_t, 110 u_int32_t, struct ucred *, NFSPROC_T *, int); 111 static int nfsrpc_setaclrpc(vnode_t, struct ucred *, NFSPROC_T *, 112 struct acl *, nfsv4stateid_t *, void *); 113 static int nfsrpc_getlayout(struct nfsmount *, vnode_t, struct nfsfh *, int, 114 uint32_t *, nfsv4stateid_t *, uint64_t, struct nfscllayout **, 115 struct ucred *, NFSPROC_T *); 116 static int nfsrpc_fillsa(struct nfsmount *, struct sockaddr_storage *, 117 struct nfsclds **, NFSPROC_T *); 118 static void nfscl_initsessionslots(struct nfsclsession *); 119 static int nfscl_doflayoutio(vnode_t, struct uio *, int *, int *, int *, 120 nfsv4stateid_t *, int, struct nfscldevinfo *, struct nfscllayout *, 121 struct nfsclflayout *, uint64_t, uint64_t, struct ucred *, NFSPROC_T *); 122 static int nfsrpc_readds(vnode_t, struct uio *, nfsv4stateid_t *, int *, 123 struct nfsclds *, uint64_t, int, struct nfsfh *, struct ucred *, 124 NFSPROC_T *); 125 static int nfsrpc_writeds(vnode_t, struct uio *, int *, int *, 126 nfsv4stateid_t *, struct nfsclds *, uint64_t, int, 127 struct nfsfh *, int, struct ucred *, NFSPROC_T *); 128 static enum nfsclds_state nfscl_getsameserver(struct nfsmount *, 129 struct nfsclds *, struct nfsclds **); 130 #ifdef notyet 131 static int nfsrpc_commitds(vnode_t, uint64_t, int, struct nfsclds *, 132 struct nfsfh *, struct ucred *, NFSPROC_T *, void *); 133 #endif 134 135 /* 136 * nfs null call from vfs. 137 */ 138 APPLESTATIC int 139 nfsrpc_null(vnode_t vp, struct ucred *cred, NFSPROC_T *p) 140 { 141 int error; 142 struct nfsrv_descript nfsd, *nd = &nfsd; 143 144 NFSCL_REQSTART(nd, NFSPROC_NULL, vp); 145 error = nfscl_request(nd, vp, p, cred, NULL); 146 if (nd->nd_repstat && !error) 147 error = nd->nd_repstat; 148 mbuf_freem(nd->nd_mrep); 149 return (error); 150 } 151 152 /* 153 * nfs access rpc op. 154 * For nfs version 3 and 4, use the access rpc to check accessibility. If file 155 * modes are changed on the server, accesses might still fail later. 156 */ 157 APPLESTATIC int 158 nfsrpc_access(vnode_t vp, int acmode, struct ucred *cred, 159 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp) 160 { 161 int error; 162 u_int32_t mode, rmode; 163 164 if (acmode & VREAD) 165 mode = NFSACCESS_READ; 166 else 167 mode = 0; 168 if (vnode_vtype(vp) == VDIR) { 169 if (acmode & VWRITE) 170 mode |= (NFSACCESS_MODIFY | NFSACCESS_EXTEND | 171 NFSACCESS_DELETE); 172 if (acmode & VEXEC) 173 mode |= NFSACCESS_LOOKUP; 174 } else { 175 if (acmode & VWRITE) 176 mode |= (NFSACCESS_MODIFY | NFSACCESS_EXTEND); 177 if (acmode & VEXEC) 178 mode |= NFSACCESS_EXECUTE; 179 } 180 181 /* 182 * Now, just call nfsrpc_accessrpc() to do the actual RPC. 183 */ 184 error = nfsrpc_accessrpc(vp, mode, cred, p, nap, attrflagp, &rmode, 185 NULL); 186 187 /* 188 * The NFS V3 spec does not clarify whether or not 189 * the returned access bits can be a superset of 190 * the ones requested, so... 191 */ 192 if (!error && (rmode & mode) != mode) 193 error = EACCES; 194 return (error); 195 } 196 197 /* 198 * The actual rpc, separated out for Darwin. 199 */ 200 APPLESTATIC int 201 nfsrpc_accessrpc(vnode_t vp, u_int32_t mode, struct ucred *cred, 202 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, u_int32_t *rmodep, 203 void *stuff) 204 { 205 u_int32_t *tl; 206 u_int32_t supported, rmode; 207 int error; 208 struct nfsrv_descript nfsd, *nd = &nfsd; 209 nfsattrbit_t attrbits; 210 211 *attrflagp = 0; 212 supported = mode; 213 NFSCL_REQSTART(nd, NFSPROC_ACCESS, vp); 214 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 215 *tl = txdr_unsigned(mode); 216 if (nd->nd_flag & ND_NFSV4) { 217 /* 218 * And do a Getattr op. 219 */ 220 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 221 *tl = txdr_unsigned(NFSV4OP_GETATTR); 222 NFSGETATTR_ATTRBIT(&attrbits); 223 (void) nfsrv_putattrbit(nd, &attrbits); 224 } 225 error = nfscl_request(nd, vp, p, cred, stuff); 226 if (error) 227 return (error); 228 if (nd->nd_flag & ND_NFSV3) { 229 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 230 if (error) 231 goto nfsmout; 232 } 233 if (!nd->nd_repstat) { 234 if (nd->nd_flag & ND_NFSV4) { 235 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 236 supported = fxdr_unsigned(u_int32_t, *tl++); 237 } else { 238 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 239 } 240 rmode = fxdr_unsigned(u_int32_t, *tl); 241 if (nd->nd_flag & ND_NFSV4) 242 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 243 244 /* 245 * It's not obvious what should be done about 246 * unsupported access modes. For now, be paranoid 247 * and clear the unsupported ones. 248 */ 249 rmode &= supported; 250 *rmodep = rmode; 251 } else 252 error = nd->nd_repstat; 253 nfsmout: 254 mbuf_freem(nd->nd_mrep); 255 return (error); 256 } 257 258 /* 259 * nfs open rpc 260 */ 261 APPLESTATIC int 262 nfsrpc_open(vnode_t vp, int amode, struct ucred *cred, NFSPROC_T *p) 263 { 264 struct nfsclopen *op; 265 struct nfscldeleg *dp; 266 struct nfsfh *nfhp; 267 struct nfsnode *np = VTONFS(vp); 268 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 269 u_int32_t mode, clidrev; 270 int ret, newone, error, expireret = 0, retrycnt; 271 272 /* 273 * For NFSv4, Open Ops are only done on Regular Files. 274 */ 275 if (vnode_vtype(vp) != VREG) 276 return (0); 277 mode = 0; 278 if (amode & FREAD) 279 mode |= NFSV4OPEN_ACCESSREAD; 280 if (amode & FWRITE) 281 mode |= NFSV4OPEN_ACCESSWRITE; 282 nfhp = np->n_fhp; 283 284 retrycnt = 0; 285 #ifdef notdef 286 { char name[100]; int namel; 287 namel = (np->n_v4->n4_namelen < 100) ? np->n_v4->n4_namelen : 99; 288 bcopy(NFS4NODENAME(np->n_v4), name, namel); 289 name[namel] = '\0'; 290 printf("rpcopen p=0x%x name=%s",p->p_pid,name); 291 if (nfhp->nfh_len > 0) printf(" fh=0x%x\n",nfhp->nfh_fh[12]); 292 else printf(" fhl=0\n"); 293 } 294 #endif 295 do { 296 dp = NULL; 297 error = nfscl_open(vp, nfhp->nfh_fh, nfhp->nfh_len, mode, 1, 298 cred, p, NULL, &op, &newone, &ret, 1); 299 if (error) { 300 return (error); 301 } 302 if (nmp->nm_clp != NULL) 303 clidrev = nmp->nm_clp->nfsc_clientidrev; 304 else 305 clidrev = 0; 306 if (ret == NFSCLOPEN_DOOPEN) { 307 if (np->n_v4 != NULL) { 308 error = nfsrpc_openrpc(nmp, vp, np->n_v4->n4_data, 309 np->n_v4->n4_fhlen, np->n_fhp->nfh_fh, 310 np->n_fhp->nfh_len, mode, op, 311 NFS4NODENAME(np->n_v4), np->n_v4->n4_namelen, &dp, 312 0, 0x0, cred, p, 0, 0); 313 if (dp != NULL) { 314 #ifdef APPLE 315 OSBitAndAtomic((int32_t)~NDELEGMOD, (UInt32 *)&np->n_flag); 316 #else 317 NFSLOCKNODE(np); 318 np->n_flag &= ~NDELEGMOD; 319 /* 320 * Invalidate the attribute cache, so that 321 * attributes that pre-date the issue of a 322 * delegation are not cached, since the 323 * cached attributes will remain valid while 324 * the delegation is held. 325 */ 326 NFSINVALATTRCACHE(np); 327 NFSUNLOCKNODE(np); 328 #endif 329 (void) nfscl_deleg(nmp->nm_mountp, 330 op->nfso_own->nfsow_clp, 331 nfhp->nfh_fh, nfhp->nfh_len, cred, p, &dp); 332 } 333 } else { 334 error = EIO; 335 } 336 newnfs_copyincred(cred, &op->nfso_cred); 337 } else if (ret == NFSCLOPEN_SETCRED) 338 /* 339 * This is a new local open on a delegation. It needs 340 * to have credentials so that an open can be done 341 * against the server during recovery. 342 */ 343 newnfs_copyincred(cred, &op->nfso_cred); 344 345 /* 346 * nfso_opencnt is the count of how many VOP_OPEN()s have 347 * been done on this Open successfully and a VOP_CLOSE() 348 * is expected for each of these. 349 * If error is non-zero, don't increment it, since the Open 350 * hasn't succeeded yet. 351 */ 352 if (!error) 353 op->nfso_opencnt++; 354 nfscl_openrelease(op, error, newone); 355 if (error == NFSERR_GRACE || error == NFSERR_STALECLIENTID || 356 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 357 error == NFSERR_BADSESSION) { 358 (void) nfs_catnap(PZERO, error, "nfs_open"); 359 } else if ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) 360 && clidrev != 0) { 361 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p); 362 retrycnt++; 363 } 364 } while (error == NFSERR_GRACE || error == NFSERR_STALECLIENTID || 365 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 366 error == NFSERR_BADSESSION || 367 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) && 368 expireret == 0 && clidrev != 0 && retrycnt < 4)); 369 if (error && retrycnt >= 4) 370 error = EIO; 371 return (error); 372 } 373 374 /* 375 * the actual open rpc 376 */ 377 APPLESTATIC int 378 nfsrpc_openrpc(struct nfsmount *nmp, vnode_t vp, u_int8_t *nfhp, int fhlen, 379 u_int8_t *newfhp, int newfhlen, u_int32_t mode, struct nfsclopen *op, 380 u_int8_t *name, int namelen, struct nfscldeleg **dpp, 381 int reclaim, u_int32_t delegtype, struct ucred *cred, NFSPROC_T *p, 382 int syscred, int recursed) 383 { 384 u_int32_t *tl; 385 struct nfsrv_descript nfsd, *nd = &nfsd; 386 struct nfscldeleg *dp, *ndp = NULL; 387 struct nfsvattr nfsva; 388 u_int32_t rflags, deleg; 389 nfsattrbit_t attrbits; 390 int error, ret, acesize, limitby; 391 392 dp = *dpp; 393 *dpp = NULL; 394 nfscl_reqstart(nd, NFSPROC_OPEN, nmp, nfhp, fhlen, NULL, NULL); 395 NFSM_BUILD(tl, u_int32_t *, 5 * NFSX_UNSIGNED); 396 *tl++ = txdr_unsigned(op->nfso_own->nfsow_seqid); 397 *tl++ = txdr_unsigned(mode & NFSV4OPEN_ACCESSBOTH); 398 *tl++ = txdr_unsigned((mode >> NFSLCK_SHIFT) & NFSV4OPEN_DENYBOTH); 399 *tl++ = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[0]; 400 *tl = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[1]; 401 (void) nfsm_strtom(nd, op->nfso_own->nfsow_owner, NFSV4CL_LOCKNAMELEN); 402 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 403 *tl++ = txdr_unsigned(NFSV4OPEN_NOCREATE); 404 if (reclaim) { 405 *tl = txdr_unsigned(NFSV4OPEN_CLAIMPREVIOUS); 406 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 407 *tl = txdr_unsigned(delegtype); 408 } else { 409 if (dp != NULL) { 410 *tl = txdr_unsigned(NFSV4OPEN_CLAIMDELEGATECUR); 411 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID); 412 if (NFSHASNFSV4N(nmp)) 413 *tl++ = 0; 414 else 415 *tl++ = dp->nfsdl_stateid.seqid; 416 *tl++ = dp->nfsdl_stateid.other[0]; 417 *tl++ = dp->nfsdl_stateid.other[1]; 418 *tl = dp->nfsdl_stateid.other[2]; 419 } else { 420 *tl = txdr_unsigned(NFSV4OPEN_CLAIMNULL); 421 } 422 (void) nfsm_strtom(nd, name, namelen); 423 } 424 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 425 *tl = txdr_unsigned(NFSV4OP_GETATTR); 426 NFSZERO_ATTRBIT(&attrbits); 427 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_CHANGE); 428 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_TIMEMODIFY); 429 (void) nfsrv_putattrbit(nd, &attrbits); 430 if (syscred) 431 nd->nd_flag |= ND_USEGSSNAME; 432 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, vp, p, cred, 433 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 434 if (error) 435 return (error); 436 NFSCL_INCRSEQID(op->nfso_own->nfsow_seqid, nd); 437 if (!nd->nd_repstat) { 438 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID + 439 6 * NFSX_UNSIGNED); 440 op->nfso_stateid.seqid = *tl++; 441 op->nfso_stateid.other[0] = *tl++; 442 op->nfso_stateid.other[1] = *tl++; 443 op->nfso_stateid.other[2] = *tl; 444 rflags = fxdr_unsigned(u_int32_t, *(tl + 6)); 445 error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL); 446 if (error) 447 goto nfsmout; 448 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 449 deleg = fxdr_unsigned(u_int32_t, *tl); 450 if (deleg == NFSV4OPEN_DELEGATEREAD || 451 deleg == NFSV4OPEN_DELEGATEWRITE) { 452 if (!(op->nfso_own->nfsow_clp->nfsc_flags & 453 NFSCLFLAGS_FIRSTDELEG)) 454 op->nfso_own->nfsow_clp->nfsc_flags |= 455 (NFSCLFLAGS_FIRSTDELEG | NFSCLFLAGS_GOTDELEG); 456 MALLOC(ndp, struct nfscldeleg *, 457 sizeof (struct nfscldeleg) + newfhlen, 458 M_NFSCLDELEG, M_WAITOK); 459 LIST_INIT(&ndp->nfsdl_owner); 460 LIST_INIT(&ndp->nfsdl_lock); 461 ndp->nfsdl_clp = op->nfso_own->nfsow_clp; 462 ndp->nfsdl_fhlen = newfhlen; 463 NFSBCOPY(newfhp, ndp->nfsdl_fh, newfhlen); 464 newnfs_copyincred(cred, &ndp->nfsdl_cred); 465 nfscl_lockinit(&ndp->nfsdl_rwlock); 466 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID + 467 NFSX_UNSIGNED); 468 ndp->nfsdl_stateid.seqid = *tl++; 469 ndp->nfsdl_stateid.other[0] = *tl++; 470 ndp->nfsdl_stateid.other[1] = *tl++; 471 ndp->nfsdl_stateid.other[2] = *tl++; 472 ret = fxdr_unsigned(int, *tl); 473 if (deleg == NFSV4OPEN_DELEGATEWRITE) { 474 ndp->nfsdl_flags = NFSCLDL_WRITE; 475 /* 476 * Indicates how much the file can grow. 477 */ 478 NFSM_DISSECT(tl, u_int32_t *, 479 3 * NFSX_UNSIGNED); 480 limitby = fxdr_unsigned(int, *tl++); 481 switch (limitby) { 482 case NFSV4OPEN_LIMITSIZE: 483 ndp->nfsdl_sizelimit = fxdr_hyper(tl); 484 break; 485 case NFSV4OPEN_LIMITBLOCKS: 486 ndp->nfsdl_sizelimit = 487 fxdr_unsigned(u_int64_t, *tl++); 488 ndp->nfsdl_sizelimit *= 489 fxdr_unsigned(u_int64_t, *tl); 490 break; 491 default: 492 error = NFSERR_BADXDR; 493 goto nfsmout; 494 } 495 } else { 496 ndp->nfsdl_flags = NFSCLDL_READ; 497 } 498 if (ret) 499 ndp->nfsdl_flags |= NFSCLDL_RECALL; 500 error = nfsrv_dissectace(nd, &ndp->nfsdl_ace, &ret, 501 &acesize, p); 502 if (error) 503 goto nfsmout; 504 } else if (deleg != NFSV4OPEN_DELEGATENONE) { 505 error = NFSERR_BADXDR; 506 goto nfsmout; 507 } 508 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 509 error = nfsv4_loadattr(nd, NULL, &nfsva, NULL, 510 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0, 511 NULL, NULL, NULL, p, cred); 512 if (error) 513 goto nfsmout; 514 if (ndp != NULL) { 515 ndp->nfsdl_change = nfsva.na_filerev; 516 ndp->nfsdl_modtime = nfsva.na_mtime; 517 ndp->nfsdl_flags |= NFSCLDL_MODTIMESET; 518 } 519 if (!reclaim && (rflags & NFSV4OPEN_RESULTCONFIRM)) { 520 do { 521 ret = nfsrpc_openconfirm(vp, newfhp, newfhlen, op, 522 cred, p); 523 if (ret == NFSERR_DELAY) 524 (void) nfs_catnap(PZERO, ret, "nfs_open"); 525 } while (ret == NFSERR_DELAY); 526 error = ret; 527 } 528 if ((rflags & NFSV4OPEN_LOCKTYPEPOSIX) || 529 nfscl_assumeposixlocks) 530 op->nfso_posixlock = 1; 531 else 532 op->nfso_posixlock = 0; 533 534 /* 535 * If the server is handing out delegations, but we didn't 536 * get one because an OpenConfirm was required, try the 537 * Open again, to get a delegation. This is a harmless no-op, 538 * from a server's point of view. 539 */ 540 if (!reclaim && (rflags & NFSV4OPEN_RESULTCONFIRM) && 541 (op->nfso_own->nfsow_clp->nfsc_flags & NFSCLFLAGS_GOTDELEG) 542 && !error && dp == NULL && ndp == NULL && !recursed) { 543 do { 544 ret = nfsrpc_openrpc(nmp, vp, nfhp, fhlen, newfhp, 545 newfhlen, mode, op, name, namelen, &ndp, 0, 0x0, 546 cred, p, syscred, 1); 547 if (ret == NFSERR_DELAY) 548 (void) nfs_catnap(PZERO, ret, "nfs_open2"); 549 } while (ret == NFSERR_DELAY); 550 if (ret) { 551 if (ndp != NULL) { 552 FREE((caddr_t)ndp, M_NFSCLDELEG); 553 ndp = NULL; 554 } 555 if (ret == NFSERR_STALECLIENTID || 556 ret == NFSERR_STALEDONTRECOVER || 557 ret == NFSERR_BADSESSION) 558 error = ret; 559 } 560 } 561 } 562 if (nd->nd_repstat != 0 && error == 0) 563 error = nd->nd_repstat; 564 if (error == NFSERR_STALECLIENTID || error == NFSERR_BADSESSION) 565 nfscl_initiate_recovery(op->nfso_own->nfsow_clp); 566 nfsmout: 567 if (!error) 568 *dpp = ndp; 569 else if (ndp != NULL) 570 FREE((caddr_t)ndp, M_NFSCLDELEG); 571 mbuf_freem(nd->nd_mrep); 572 return (error); 573 } 574 575 /* 576 * open downgrade rpc 577 */ 578 APPLESTATIC int 579 nfsrpc_opendowngrade(vnode_t vp, u_int32_t mode, struct nfsclopen *op, 580 struct ucred *cred, NFSPROC_T *p) 581 { 582 u_int32_t *tl; 583 struct nfsrv_descript nfsd, *nd = &nfsd; 584 int error; 585 586 NFSCL_REQSTART(nd, NFSPROC_OPENDOWNGRADE, vp); 587 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID + 3 * NFSX_UNSIGNED); 588 if (NFSHASNFSV4N(VFSTONFS(vnode_mount(vp)))) 589 *tl++ = 0; 590 else 591 *tl++ = op->nfso_stateid.seqid; 592 *tl++ = op->nfso_stateid.other[0]; 593 *tl++ = op->nfso_stateid.other[1]; 594 *tl++ = op->nfso_stateid.other[2]; 595 *tl++ = txdr_unsigned(op->nfso_own->nfsow_seqid); 596 *tl++ = txdr_unsigned(mode & NFSV4OPEN_ACCESSBOTH); 597 *tl = txdr_unsigned((mode >> NFSLCK_SHIFT) & NFSV4OPEN_DENYBOTH); 598 error = nfscl_request(nd, vp, p, cred, NULL); 599 if (error) 600 return (error); 601 NFSCL_INCRSEQID(op->nfso_own->nfsow_seqid, nd); 602 if (!nd->nd_repstat) { 603 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID); 604 op->nfso_stateid.seqid = *tl++; 605 op->nfso_stateid.other[0] = *tl++; 606 op->nfso_stateid.other[1] = *tl++; 607 op->nfso_stateid.other[2] = *tl; 608 } 609 if (nd->nd_repstat && error == 0) 610 error = nd->nd_repstat; 611 if (error == NFSERR_STALESTATEID || error == NFSERR_BADSESSION) 612 nfscl_initiate_recovery(op->nfso_own->nfsow_clp); 613 nfsmout: 614 mbuf_freem(nd->nd_mrep); 615 return (error); 616 } 617 618 /* 619 * V4 Close operation. 620 */ 621 APPLESTATIC int 622 nfsrpc_close(vnode_t vp, int doclose, NFSPROC_T *p) 623 { 624 struct nfsclclient *clp; 625 int error; 626 627 if (vnode_vtype(vp) != VREG) 628 return (0); 629 if (doclose) 630 error = nfscl_doclose(vp, &clp, p); 631 else 632 error = nfscl_getclose(vp, &clp); 633 if (error) 634 return (error); 635 636 nfscl_clientrelease(clp); 637 return (0); 638 } 639 640 /* 641 * Close the open. 642 */ 643 APPLESTATIC void 644 nfsrpc_doclose(struct nfsmount *nmp, struct nfsclopen *op, NFSPROC_T *p) 645 { 646 struct nfsrv_descript nfsd, *nd = &nfsd; 647 struct nfscllockowner *lp, *nlp; 648 struct nfscllock *lop, *nlop; 649 struct ucred *tcred; 650 u_int64_t off = 0, len = 0; 651 u_int32_t type = NFSV4LOCKT_READ; 652 int error, do_unlock, trycnt; 653 654 tcred = newnfs_getcred(); 655 newnfs_copycred(&op->nfso_cred, tcred); 656 /* 657 * (Theoretically this could be done in the same 658 * compound as the close, but having multiple 659 * sequenced Ops in the same compound might be 660 * too scary for some servers.) 661 */ 662 if (op->nfso_posixlock) { 663 off = 0; 664 len = NFS64BITSSET; 665 type = NFSV4LOCKT_READ; 666 } 667 668 /* 669 * Since this function is only called from VOP_INACTIVE(), no 670 * other thread will be manipulating this Open. As such, the 671 * lock lists are not being changed by other threads, so it should 672 * be safe to do this without locking. 673 */ 674 LIST_FOREACH(lp, &op->nfso_lock, nfsl_list) { 675 do_unlock = 1; 676 LIST_FOREACH_SAFE(lop, &lp->nfsl_lock, nfslo_list, nlop) { 677 if (op->nfso_posixlock == 0) { 678 off = lop->nfslo_first; 679 len = lop->nfslo_end - lop->nfslo_first; 680 if (lop->nfslo_type == F_WRLCK) 681 type = NFSV4LOCKT_WRITE; 682 else 683 type = NFSV4LOCKT_READ; 684 } 685 if (do_unlock) { 686 trycnt = 0; 687 do { 688 error = nfsrpc_locku(nd, nmp, lp, off, 689 len, type, tcred, p, 0); 690 if ((nd->nd_repstat == NFSERR_GRACE || 691 nd->nd_repstat == NFSERR_DELAY) && 692 error == 0) 693 (void) nfs_catnap(PZERO, 694 (int)nd->nd_repstat, 695 "nfs_close"); 696 } while ((nd->nd_repstat == NFSERR_GRACE || 697 nd->nd_repstat == NFSERR_DELAY) && 698 error == 0 && trycnt++ < 5); 699 if (op->nfso_posixlock) 700 do_unlock = 0; 701 } 702 nfscl_freelock(lop, 0); 703 } 704 /* 705 * Do a ReleaseLockOwner. 706 * The lock owner name nfsl_owner may be used by other opens for 707 * other files but the lock_owner4 name that nfsrpc_rellockown() 708 * puts on the wire has the file handle for this file appended 709 * to it, so it can be done now. 710 */ 711 (void)nfsrpc_rellockown(nmp, lp, lp->nfsl_open->nfso_fh, 712 lp->nfsl_open->nfso_fhlen, tcred, p); 713 } 714 715 /* 716 * There could be other Opens for different files on the same 717 * OpenOwner, so locking is required. 718 */ 719 NFSLOCKCLSTATE(); 720 nfscl_lockexcl(&op->nfso_own->nfsow_rwlock, NFSCLSTATEMUTEXPTR); 721 NFSUNLOCKCLSTATE(); 722 do { 723 error = nfscl_tryclose(op, tcred, nmp, p); 724 if (error == NFSERR_GRACE) 725 (void) nfs_catnap(PZERO, error, "nfs_close"); 726 } while (error == NFSERR_GRACE); 727 NFSLOCKCLSTATE(); 728 nfscl_lockunlock(&op->nfso_own->nfsow_rwlock); 729 730 LIST_FOREACH_SAFE(lp, &op->nfso_lock, nfsl_list, nlp) 731 nfscl_freelockowner(lp, 0); 732 nfscl_freeopen(op, 0); 733 NFSUNLOCKCLSTATE(); 734 NFSFREECRED(tcred); 735 } 736 737 /* 738 * The actual Close RPC. 739 */ 740 APPLESTATIC int 741 nfsrpc_closerpc(struct nfsrv_descript *nd, struct nfsmount *nmp, 742 struct nfsclopen *op, struct ucred *cred, NFSPROC_T *p, 743 int syscred) 744 { 745 u_int32_t *tl; 746 int error; 747 748 nfscl_reqstart(nd, NFSPROC_CLOSE, nmp, op->nfso_fh, 749 op->nfso_fhlen, NULL, NULL); 750 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED + NFSX_STATEID); 751 *tl++ = txdr_unsigned(op->nfso_own->nfsow_seqid); 752 if (NFSHASNFSV4N(nmp)) 753 *tl++ = 0; 754 else 755 *tl++ = op->nfso_stateid.seqid; 756 *tl++ = op->nfso_stateid.other[0]; 757 *tl++ = op->nfso_stateid.other[1]; 758 *tl = op->nfso_stateid.other[2]; 759 if (syscred) 760 nd->nd_flag |= ND_USEGSSNAME; 761 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 762 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 763 if (error) 764 return (error); 765 NFSCL_INCRSEQID(op->nfso_own->nfsow_seqid, nd); 766 if (nd->nd_repstat == 0) 767 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID); 768 error = nd->nd_repstat; 769 if (error == NFSERR_STALESTATEID || error == NFSERR_BADSESSION) 770 nfscl_initiate_recovery(op->nfso_own->nfsow_clp); 771 nfsmout: 772 mbuf_freem(nd->nd_mrep); 773 return (error); 774 } 775 776 /* 777 * V4 Open Confirm RPC. 778 */ 779 APPLESTATIC int 780 nfsrpc_openconfirm(vnode_t vp, u_int8_t *nfhp, int fhlen, 781 struct nfsclopen *op, struct ucred *cred, NFSPROC_T *p) 782 { 783 u_int32_t *tl; 784 struct nfsrv_descript nfsd, *nd = &nfsd; 785 struct nfsmount *nmp; 786 int error; 787 788 nmp = VFSTONFS(vnode_mount(vp)); 789 if (NFSHASNFSV4N(nmp)) 790 return (0); /* No confirmation for NFSv4.1. */ 791 nfscl_reqstart(nd, NFSPROC_OPENCONFIRM, nmp, nfhp, fhlen, NULL, NULL); 792 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED + NFSX_STATEID); 793 *tl++ = op->nfso_stateid.seqid; 794 *tl++ = op->nfso_stateid.other[0]; 795 *tl++ = op->nfso_stateid.other[1]; 796 *tl++ = op->nfso_stateid.other[2]; 797 *tl = txdr_unsigned(op->nfso_own->nfsow_seqid); 798 error = nfscl_request(nd, vp, p, cred, NULL); 799 if (error) 800 return (error); 801 NFSCL_INCRSEQID(op->nfso_own->nfsow_seqid, nd); 802 if (!nd->nd_repstat) { 803 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID); 804 op->nfso_stateid.seqid = *tl++; 805 op->nfso_stateid.other[0] = *tl++; 806 op->nfso_stateid.other[1] = *tl++; 807 op->nfso_stateid.other[2] = *tl; 808 } 809 error = nd->nd_repstat; 810 if (error == NFSERR_STALESTATEID || error == NFSERR_BADSESSION) 811 nfscl_initiate_recovery(op->nfso_own->nfsow_clp); 812 nfsmout: 813 mbuf_freem(nd->nd_mrep); 814 return (error); 815 } 816 817 /* 818 * Do the setclientid and setclientid confirm RPCs. Called from nfs_statfs() 819 * when a mount has just occurred and when the server replies NFSERR_EXPIRED. 820 */ 821 APPLESTATIC int 822 nfsrpc_setclient(struct nfsmount *nmp, struct nfsclclient *clp, int reclaim, 823 struct ucred *cred, NFSPROC_T *p) 824 { 825 u_int32_t *tl; 826 struct nfsrv_descript nfsd; 827 struct nfsrv_descript *nd = &nfsd; 828 nfsattrbit_t attrbits; 829 u_int8_t *cp = NULL, *cp2, addr[INET6_ADDRSTRLEN + 9]; 830 u_short port; 831 int error, isinet6 = 0, callblen; 832 nfsquad_t confirm; 833 u_int32_t lease; 834 static u_int32_t rev = 0; 835 struct nfsclds *dsp, *ndsp, *tdsp; 836 struct in6_addr a6; 837 838 if (nfsboottime.tv_sec == 0) 839 NFSSETBOOTTIME(nfsboottime); 840 clp->nfsc_rev = rev++; 841 if (NFSHASNFSV4N(nmp)) { 842 error = nfsrpc_exchangeid(nmp, clp, &nmp->nm_sockreq, 843 NFSV4EXCH_USEPNFSMDS | NFSV4EXCH_USENONPNFS, &dsp, cred, p); 844 NFSCL_DEBUG(1, "aft exch=%d\n", error); 845 if (error == 0) { 846 error = nfsrpc_createsession(nmp, &dsp->nfsclds_sess, 847 &nmp->nm_sockreq, 848 dsp->nfsclds_sess.nfsess_sequenceid, 1, cred, p); 849 if (error == 0) { 850 NFSLOCKMNT(nmp); 851 TAILQ_FOREACH_SAFE(tdsp, &nmp->nm_sess, 852 nfsclds_list, ndsp) 853 nfscl_freenfsclds(tdsp); 854 TAILQ_INIT(&nmp->nm_sess); 855 TAILQ_INSERT_HEAD(&nmp->nm_sess, dsp, 856 nfsclds_list); 857 NFSUNLOCKMNT(nmp); 858 } else 859 nfscl_freenfsclds(dsp); 860 NFSCL_DEBUG(1, "aft createsess=%d\n", error); 861 } 862 if (error == 0 && reclaim == 0) { 863 error = nfsrpc_reclaimcomplete(nmp, cred, p); 864 NFSCL_DEBUG(1, "aft reclaimcomp=%d\n", error); 865 if (error == NFSERR_COMPLETEALREADY || 866 error == NFSERR_NOTSUPP) 867 /* Ignore this error. */ 868 error = 0; 869 } 870 return (error); 871 } 872 873 /* 874 * Allocate a single session structure for NFSv4.0, because some of 875 * the fields are used by NFSv4.0 although it doesn't do a session. 876 */ 877 dsp = malloc(sizeof(struct nfsclds), M_NFSCLDS, M_WAITOK | M_ZERO); 878 mtx_init(&dsp->nfsclds_mtx, "nfsds", NULL, MTX_DEF); 879 mtx_init(&dsp->nfsclds_sess.nfsess_mtx, "nfssession", NULL, MTX_DEF); 880 NFSLOCKMNT(nmp); 881 TAILQ_INSERT_HEAD(&nmp->nm_sess, dsp, nfsclds_list); 882 NFSUNLOCKMNT(nmp); 883 884 nfscl_reqstart(nd, NFSPROC_SETCLIENTID, nmp, NULL, 0, NULL, NULL); 885 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 886 *tl++ = txdr_unsigned(nfsboottime.tv_sec); 887 *tl = txdr_unsigned(clp->nfsc_rev); 888 (void) nfsm_strtom(nd, clp->nfsc_id, clp->nfsc_idlen); 889 890 /* 891 * set up the callback address 892 */ 893 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 894 *tl = txdr_unsigned(NFS_CALLBCKPROG); 895 callblen = strlen(nfsv4_callbackaddr); 896 if (callblen == 0) 897 cp = nfscl_getmyip(nmp, &a6, &isinet6); 898 if (nfscl_enablecallb && nfs_numnfscbd > 0 && 899 (callblen > 0 || cp != NULL)) { 900 port = htons(nfsv4_cbport); 901 cp2 = (u_int8_t *)&port; 902 #ifdef INET6 903 if ((callblen > 0 && 904 strchr(nfsv4_callbackaddr, ':')) || isinet6) { 905 char ip6buf[INET6_ADDRSTRLEN], *ip6add; 906 907 (void) nfsm_strtom(nd, "tcp6", 4); 908 if (callblen == 0) { 909 ip6_sprintf(ip6buf, (struct in6_addr *)cp); 910 ip6add = ip6buf; 911 } else { 912 ip6add = nfsv4_callbackaddr; 913 } 914 snprintf(addr, INET6_ADDRSTRLEN + 9, "%s.%d.%d", 915 ip6add, cp2[0], cp2[1]); 916 } else 917 #endif 918 { 919 (void) nfsm_strtom(nd, "tcp", 3); 920 if (callblen == 0) 921 snprintf(addr, INET6_ADDRSTRLEN + 9, 922 "%d.%d.%d.%d.%d.%d", cp[0], cp[1], 923 cp[2], cp[3], cp2[0], cp2[1]); 924 else 925 snprintf(addr, INET6_ADDRSTRLEN + 9, 926 "%s.%d.%d", nfsv4_callbackaddr, 927 cp2[0], cp2[1]); 928 } 929 (void) nfsm_strtom(nd, addr, strlen(addr)); 930 } else { 931 (void) nfsm_strtom(nd, "tcp", 3); 932 (void) nfsm_strtom(nd, "0.0.0.0.0.0", 11); 933 } 934 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 935 *tl = txdr_unsigned(clp->nfsc_cbident); 936 nd->nd_flag |= ND_USEGSSNAME; 937 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 938 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 939 if (error) 940 return (error); 941 if (nd->nd_repstat == 0) { 942 NFSM_DISSECT(tl, u_int32_t *, 4 * NFSX_UNSIGNED); 943 NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[0] = *tl++; 944 NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[1] = *tl++; 945 confirm.lval[0] = *tl++; 946 confirm.lval[1] = *tl; 947 mbuf_freem(nd->nd_mrep); 948 nd->nd_mrep = NULL; 949 950 /* 951 * and confirm it. 952 */ 953 nfscl_reqstart(nd, NFSPROC_SETCLIENTIDCFRM, nmp, NULL, 0, NULL, 954 NULL); 955 NFSM_BUILD(tl, u_int32_t *, 4 * NFSX_UNSIGNED); 956 *tl++ = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[0]; 957 *tl++ = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[1]; 958 *tl++ = confirm.lval[0]; 959 *tl = confirm.lval[1]; 960 nd->nd_flag |= ND_USEGSSNAME; 961 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, 962 cred, NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 963 if (error) 964 return (error); 965 mbuf_freem(nd->nd_mrep); 966 nd->nd_mrep = NULL; 967 if (nd->nd_repstat == 0) { 968 nfscl_reqstart(nd, NFSPROC_GETATTR, nmp, nmp->nm_fh, 969 nmp->nm_fhsize, NULL, NULL); 970 NFSZERO_ATTRBIT(&attrbits); 971 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_LEASETIME); 972 (void) nfsrv_putattrbit(nd, &attrbits); 973 nd->nd_flag |= ND_USEGSSNAME; 974 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, 975 cred, NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 976 if (error) 977 return (error); 978 if (nd->nd_repstat == 0) { 979 error = nfsv4_loadattr(nd, NULL, NULL, NULL, NULL, 0, NULL, 980 NULL, NULL, NULL, NULL, 0, NULL, &lease, NULL, p, cred); 981 if (error) 982 goto nfsmout; 983 clp->nfsc_renew = NFSCL_RENEW(lease); 984 clp->nfsc_expire = NFSD_MONOSEC + clp->nfsc_renew; 985 clp->nfsc_clientidrev++; 986 if (clp->nfsc_clientidrev == 0) 987 clp->nfsc_clientidrev++; 988 } 989 } 990 } 991 error = nd->nd_repstat; 992 nfsmout: 993 mbuf_freem(nd->nd_mrep); 994 return (error); 995 } 996 997 /* 998 * nfs getattr call. 999 */ 1000 APPLESTATIC int 1001 nfsrpc_getattr(vnode_t vp, struct ucred *cred, NFSPROC_T *p, 1002 struct nfsvattr *nap, void *stuff) 1003 { 1004 struct nfsrv_descript nfsd, *nd = &nfsd; 1005 int error; 1006 nfsattrbit_t attrbits; 1007 1008 NFSCL_REQSTART(nd, NFSPROC_GETATTR, vp); 1009 if (nd->nd_flag & ND_NFSV4) { 1010 NFSGETATTR_ATTRBIT(&attrbits); 1011 (void) nfsrv_putattrbit(nd, &attrbits); 1012 } 1013 error = nfscl_request(nd, vp, p, cred, stuff); 1014 if (error) 1015 return (error); 1016 if (!nd->nd_repstat) 1017 error = nfsm_loadattr(nd, nap); 1018 else 1019 error = nd->nd_repstat; 1020 mbuf_freem(nd->nd_mrep); 1021 return (error); 1022 } 1023 1024 /* 1025 * nfs getattr call with non-vnode arguments. 1026 */ 1027 APPLESTATIC int 1028 nfsrpc_getattrnovp(struct nfsmount *nmp, u_int8_t *fhp, int fhlen, int syscred, 1029 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, u_int64_t *xidp, 1030 uint32_t *leasep) 1031 { 1032 struct nfsrv_descript nfsd, *nd = &nfsd; 1033 int error, vers = NFS_VER2; 1034 nfsattrbit_t attrbits; 1035 1036 nfscl_reqstart(nd, NFSPROC_GETATTR, nmp, fhp, fhlen, NULL, NULL); 1037 if (nd->nd_flag & ND_NFSV4) { 1038 vers = NFS_VER4; 1039 NFSGETATTR_ATTRBIT(&attrbits); 1040 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_LEASETIME); 1041 (void) nfsrv_putattrbit(nd, &attrbits); 1042 } else if (nd->nd_flag & ND_NFSV3) { 1043 vers = NFS_VER3; 1044 } 1045 if (syscred) 1046 nd->nd_flag |= ND_USEGSSNAME; 1047 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 1048 NFS_PROG, vers, NULL, 1, xidp, NULL); 1049 if (error) 1050 return (error); 1051 if (nd->nd_repstat == 0) { 1052 if ((nd->nd_flag & ND_NFSV4) != 0) 1053 error = nfsv4_loadattr(nd, NULL, nap, NULL, NULL, 0, 1054 NULL, NULL, NULL, NULL, NULL, 0, NULL, leasep, NULL, 1055 NULL, NULL); 1056 else 1057 error = nfsm_loadattr(nd, nap); 1058 } else 1059 error = nd->nd_repstat; 1060 mbuf_freem(nd->nd_mrep); 1061 return (error); 1062 } 1063 1064 /* 1065 * Do an nfs setattr operation. 1066 */ 1067 APPLESTATIC int 1068 nfsrpc_setattr(vnode_t vp, struct vattr *vap, NFSACL_T *aclp, 1069 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *rnap, int *attrflagp, 1070 void *stuff) 1071 { 1072 int error, expireret = 0, openerr, retrycnt; 1073 u_int32_t clidrev = 0, mode; 1074 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 1075 struct nfsfh *nfhp; 1076 nfsv4stateid_t stateid; 1077 void *lckp; 1078 1079 if (nmp->nm_clp != NULL) 1080 clidrev = nmp->nm_clp->nfsc_clientidrev; 1081 if (vap != NULL && NFSATTRISSET(u_quad_t, vap, va_size)) 1082 mode = NFSV4OPEN_ACCESSWRITE; 1083 else 1084 mode = NFSV4OPEN_ACCESSREAD; 1085 retrycnt = 0; 1086 do { 1087 lckp = NULL; 1088 openerr = 1; 1089 if (NFSHASNFSV4(nmp)) { 1090 nfhp = VTONFS(vp)->n_fhp; 1091 error = nfscl_getstateid(vp, nfhp->nfh_fh, 1092 nfhp->nfh_len, mode, 0, cred, p, &stateid, &lckp); 1093 if (error && vnode_vtype(vp) == VREG && 1094 (mode == NFSV4OPEN_ACCESSWRITE || 1095 nfstest_openallsetattr)) { 1096 /* 1097 * No Open stateid, so try and open the file 1098 * now. 1099 */ 1100 if (mode == NFSV4OPEN_ACCESSWRITE) 1101 openerr = nfsrpc_open(vp, FWRITE, cred, 1102 p); 1103 else 1104 openerr = nfsrpc_open(vp, FREAD, cred, 1105 p); 1106 if (!openerr) 1107 (void) nfscl_getstateid(vp, 1108 nfhp->nfh_fh, nfhp->nfh_len, 1109 mode, 0, cred, p, &stateid, &lckp); 1110 } 1111 } 1112 if (vap != NULL) 1113 error = nfsrpc_setattrrpc(vp, vap, &stateid, cred, p, 1114 rnap, attrflagp, stuff); 1115 else 1116 error = nfsrpc_setaclrpc(vp, cred, p, aclp, &stateid, 1117 stuff); 1118 if (error == NFSERR_STALESTATEID || error == NFSERR_BADSESSION) 1119 nfscl_initiate_recovery(nmp->nm_clp); 1120 if (lckp != NULL) 1121 nfscl_lockderef(lckp); 1122 if (!openerr) 1123 (void) nfsrpc_close(vp, 0, p); 1124 if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 1125 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 1126 error == NFSERR_OLDSTATEID || error == NFSERR_BADSESSION) { 1127 (void) nfs_catnap(PZERO, error, "nfs_setattr"); 1128 } else if ((error == NFSERR_EXPIRED || 1129 error == NFSERR_BADSTATEID) && clidrev != 0) { 1130 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p); 1131 } 1132 retrycnt++; 1133 } while (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 1134 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 1135 error == NFSERR_BADSESSION || 1136 (error == NFSERR_OLDSTATEID && retrycnt < 20) || 1137 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) && 1138 expireret == 0 && clidrev != 0 && retrycnt < 4)); 1139 if (error && retrycnt >= 4) 1140 error = EIO; 1141 return (error); 1142 } 1143 1144 static int 1145 nfsrpc_setattrrpc(vnode_t vp, struct vattr *vap, 1146 nfsv4stateid_t *stateidp, struct ucred *cred, NFSPROC_T *p, 1147 struct nfsvattr *rnap, int *attrflagp, void *stuff) 1148 { 1149 u_int32_t *tl; 1150 struct nfsrv_descript nfsd, *nd = &nfsd; 1151 int error; 1152 nfsattrbit_t attrbits; 1153 1154 *attrflagp = 0; 1155 NFSCL_REQSTART(nd, NFSPROC_SETATTR, vp); 1156 if (nd->nd_flag & ND_NFSV4) 1157 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID); 1158 vap->va_type = vnode_vtype(vp); 1159 nfscl_fillsattr(nd, vap, vp, NFSSATTR_FULL, 0); 1160 if (nd->nd_flag & ND_NFSV3) { 1161 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1162 *tl = newnfs_false; 1163 } else if (nd->nd_flag & ND_NFSV4) { 1164 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1165 *tl = txdr_unsigned(NFSV4OP_GETATTR); 1166 NFSGETATTR_ATTRBIT(&attrbits); 1167 (void) nfsrv_putattrbit(nd, &attrbits); 1168 } 1169 error = nfscl_request(nd, vp, p, cred, stuff); 1170 if (error) 1171 return (error); 1172 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) 1173 error = nfscl_wcc_data(nd, vp, rnap, attrflagp, NULL, stuff); 1174 if ((nd->nd_flag & ND_NFSV4) && !error) 1175 error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL); 1176 if (!(nd->nd_flag & ND_NFSV3) && !nd->nd_repstat && !error) 1177 error = nfscl_postop_attr(nd, rnap, attrflagp, stuff); 1178 mbuf_freem(nd->nd_mrep); 1179 if (nd->nd_repstat && !error) 1180 error = nd->nd_repstat; 1181 return (error); 1182 } 1183 1184 /* 1185 * nfs lookup rpc 1186 */ 1187 APPLESTATIC int 1188 nfsrpc_lookup(vnode_t dvp, char *name, int len, struct ucred *cred, 1189 NFSPROC_T *p, struct nfsvattr *dnap, struct nfsvattr *nap, 1190 struct nfsfh **nfhpp, int *attrflagp, int *dattrflagp, void *stuff) 1191 { 1192 u_int32_t *tl; 1193 struct nfsrv_descript nfsd, *nd = &nfsd; 1194 struct nfsmount *nmp; 1195 struct nfsnode *np; 1196 struct nfsfh *nfhp; 1197 nfsattrbit_t attrbits; 1198 int error = 0, lookupp = 0; 1199 1200 *attrflagp = 0; 1201 *dattrflagp = 0; 1202 if (vnode_vtype(dvp) != VDIR) 1203 return (ENOTDIR); 1204 nmp = VFSTONFS(vnode_mount(dvp)); 1205 if (len > NFS_MAXNAMLEN) 1206 return (ENAMETOOLONG); 1207 if (NFSHASNFSV4(nmp) && len == 1 && 1208 name[0] == '.') { 1209 /* 1210 * Just return the current dir's fh. 1211 */ 1212 np = VTONFS(dvp); 1213 MALLOC(nfhp, struct nfsfh *, sizeof (struct nfsfh) + 1214 np->n_fhp->nfh_len, M_NFSFH, M_WAITOK); 1215 nfhp->nfh_len = np->n_fhp->nfh_len; 1216 NFSBCOPY(np->n_fhp->nfh_fh, nfhp->nfh_fh, nfhp->nfh_len); 1217 *nfhpp = nfhp; 1218 return (0); 1219 } 1220 if (NFSHASNFSV4(nmp) && len == 2 && 1221 name[0] == '.' && name[1] == '.') { 1222 lookupp = 1; 1223 NFSCL_REQSTART(nd, NFSPROC_LOOKUPP, dvp); 1224 } else { 1225 NFSCL_REQSTART(nd, NFSPROC_LOOKUP, dvp); 1226 (void) nfsm_strtom(nd, name, len); 1227 } 1228 if (nd->nd_flag & ND_NFSV4) { 1229 NFSGETATTR_ATTRBIT(&attrbits); 1230 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1231 *tl++ = txdr_unsigned(NFSV4OP_GETFH); 1232 *tl = txdr_unsigned(NFSV4OP_GETATTR); 1233 (void) nfsrv_putattrbit(nd, &attrbits); 1234 } 1235 error = nfscl_request(nd, dvp, p, cred, stuff); 1236 if (error) 1237 return (error); 1238 if (nd->nd_repstat) { 1239 /* 1240 * When an NFSv4 Lookupp returns ENOENT, it means that 1241 * the lookup is at the root of an fs, so return this dir. 1242 */ 1243 if (nd->nd_repstat == NFSERR_NOENT && lookupp) { 1244 np = VTONFS(dvp); 1245 MALLOC(nfhp, struct nfsfh *, sizeof (struct nfsfh) + 1246 np->n_fhp->nfh_len, M_NFSFH, M_WAITOK); 1247 nfhp->nfh_len = np->n_fhp->nfh_len; 1248 NFSBCOPY(np->n_fhp->nfh_fh, nfhp->nfh_fh, nfhp->nfh_len); 1249 *nfhpp = nfhp; 1250 mbuf_freem(nd->nd_mrep); 1251 return (0); 1252 } 1253 if (nd->nd_flag & ND_NFSV3) 1254 error = nfscl_postop_attr(nd, dnap, dattrflagp, stuff); 1255 else if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == 1256 ND_NFSV4) { 1257 /* Load the directory attributes. */ 1258 error = nfsm_loadattr(nd, dnap); 1259 if (error == 0) 1260 *dattrflagp = 1; 1261 } 1262 goto nfsmout; 1263 } 1264 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == ND_NFSV4) { 1265 /* Load the directory attributes. */ 1266 error = nfsm_loadattr(nd, dnap); 1267 if (error != 0) 1268 goto nfsmout; 1269 *dattrflagp = 1; 1270 /* Skip over the Lookup and GetFH operation status values. */ 1271 NFSM_DISSECT(tl, u_int32_t *, 4 * NFSX_UNSIGNED); 1272 } 1273 error = nfsm_getfh(nd, nfhpp); 1274 if (error) 1275 goto nfsmout; 1276 1277 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 1278 if ((nd->nd_flag & ND_NFSV3) && !error) 1279 error = nfscl_postop_attr(nd, dnap, dattrflagp, stuff); 1280 nfsmout: 1281 mbuf_freem(nd->nd_mrep); 1282 if (!error && nd->nd_repstat) 1283 error = nd->nd_repstat; 1284 return (error); 1285 } 1286 1287 /* 1288 * Do a readlink rpc. 1289 */ 1290 APPLESTATIC int 1291 nfsrpc_readlink(vnode_t vp, struct uio *uiop, struct ucred *cred, 1292 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff) 1293 { 1294 u_int32_t *tl; 1295 struct nfsrv_descript nfsd, *nd = &nfsd; 1296 struct nfsnode *np = VTONFS(vp); 1297 nfsattrbit_t attrbits; 1298 int error, len, cangetattr = 1; 1299 1300 *attrflagp = 0; 1301 NFSCL_REQSTART(nd, NFSPROC_READLINK, vp); 1302 if (nd->nd_flag & ND_NFSV4) { 1303 /* 1304 * And do a Getattr op. 1305 */ 1306 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1307 *tl = txdr_unsigned(NFSV4OP_GETATTR); 1308 NFSGETATTR_ATTRBIT(&attrbits); 1309 (void) nfsrv_putattrbit(nd, &attrbits); 1310 } 1311 error = nfscl_request(nd, vp, p, cred, stuff); 1312 if (error) 1313 return (error); 1314 if (nd->nd_flag & ND_NFSV3) 1315 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 1316 if (!nd->nd_repstat && !error) { 1317 NFSM_STRSIZ(len, NFS_MAXPATHLEN); 1318 /* 1319 * This seems weird to me, but must have been added to 1320 * FreeBSD for some reason. The only thing I can think of 1321 * is that there was/is some server that replies with 1322 * more link data than it should? 1323 */ 1324 if (len == NFS_MAXPATHLEN) { 1325 NFSLOCKNODE(np); 1326 if (np->n_size > 0 && np->n_size < NFS_MAXPATHLEN) { 1327 len = np->n_size; 1328 cangetattr = 0; 1329 } 1330 NFSUNLOCKNODE(np); 1331 } 1332 error = nfsm_mbufuio(nd, uiop, len); 1333 if ((nd->nd_flag & ND_NFSV4) && !error && cangetattr) 1334 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 1335 } 1336 if (nd->nd_repstat && !error) 1337 error = nd->nd_repstat; 1338 nfsmout: 1339 mbuf_freem(nd->nd_mrep); 1340 return (error); 1341 } 1342 1343 /* 1344 * Read operation. 1345 */ 1346 APPLESTATIC int 1347 nfsrpc_read(vnode_t vp, struct uio *uiop, struct ucred *cred, 1348 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff) 1349 { 1350 int error, expireret = 0, retrycnt; 1351 u_int32_t clidrev = 0; 1352 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 1353 struct nfsnode *np = VTONFS(vp); 1354 struct ucred *newcred; 1355 struct nfsfh *nfhp = NULL; 1356 nfsv4stateid_t stateid; 1357 void *lckp; 1358 1359 if (nmp->nm_clp != NULL) 1360 clidrev = nmp->nm_clp->nfsc_clientidrev; 1361 newcred = cred; 1362 if (NFSHASNFSV4(nmp)) { 1363 nfhp = np->n_fhp; 1364 newcred = NFSNEWCRED(cred); 1365 } 1366 retrycnt = 0; 1367 do { 1368 lckp = NULL; 1369 if (NFSHASNFSV4(nmp)) 1370 (void)nfscl_getstateid(vp, nfhp->nfh_fh, nfhp->nfh_len, 1371 NFSV4OPEN_ACCESSREAD, 0, newcred, p, &stateid, 1372 &lckp); 1373 error = nfsrpc_readrpc(vp, uiop, newcred, &stateid, p, nap, 1374 attrflagp, stuff); 1375 if (error == NFSERR_STALESTATEID || error == NFSERR_BADSESSION) 1376 nfscl_initiate_recovery(nmp->nm_clp); 1377 if (lckp != NULL) 1378 nfscl_lockderef(lckp); 1379 if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 1380 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 1381 error == NFSERR_OLDSTATEID || error == NFSERR_BADSESSION) { 1382 (void) nfs_catnap(PZERO, error, "nfs_read"); 1383 } else if ((error == NFSERR_EXPIRED || 1384 error == NFSERR_BADSTATEID) && clidrev != 0) { 1385 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p); 1386 } 1387 retrycnt++; 1388 } while (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 1389 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 1390 error == NFSERR_BADSESSION || 1391 (error == NFSERR_OLDSTATEID && retrycnt < 20) || 1392 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) && 1393 expireret == 0 && clidrev != 0 && retrycnt < 4)); 1394 if (error && retrycnt >= 4) 1395 error = EIO; 1396 if (NFSHASNFSV4(nmp)) 1397 NFSFREECRED(newcred); 1398 return (error); 1399 } 1400 1401 /* 1402 * The actual read RPC. 1403 */ 1404 static int 1405 nfsrpc_readrpc(vnode_t vp, struct uio *uiop, struct ucred *cred, 1406 nfsv4stateid_t *stateidp, NFSPROC_T *p, struct nfsvattr *nap, 1407 int *attrflagp, void *stuff) 1408 { 1409 u_int32_t *tl; 1410 int error = 0, len, retlen, tsiz, eof = 0; 1411 struct nfsrv_descript nfsd; 1412 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 1413 struct nfsrv_descript *nd = &nfsd; 1414 int rsize; 1415 off_t tmp_off; 1416 1417 *attrflagp = 0; 1418 tsiz = uio_uio_resid(uiop); 1419 tmp_off = uiop->uio_offset + tsiz; 1420 NFSLOCKMNT(nmp); 1421 if (tmp_off > nmp->nm_maxfilesize || tmp_off < uiop->uio_offset) { 1422 NFSUNLOCKMNT(nmp); 1423 return (EFBIG); 1424 } 1425 rsize = nmp->nm_rsize; 1426 NFSUNLOCKMNT(nmp); 1427 nd->nd_mrep = NULL; 1428 while (tsiz > 0) { 1429 *attrflagp = 0; 1430 len = (tsiz > rsize) ? rsize : tsiz; 1431 NFSCL_REQSTART(nd, NFSPROC_READ, vp); 1432 if (nd->nd_flag & ND_NFSV4) 1433 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID); 1434 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED * 3); 1435 if (nd->nd_flag & ND_NFSV2) { 1436 *tl++ = txdr_unsigned(uiop->uio_offset); 1437 *tl++ = txdr_unsigned(len); 1438 *tl = 0; 1439 } else { 1440 txdr_hyper(uiop->uio_offset, tl); 1441 *(tl + 2) = txdr_unsigned(len); 1442 } 1443 /* 1444 * Since I can't do a Getattr for NFSv4 for Write, there 1445 * doesn't seem any point in doing one here, either. 1446 * (See the comment in nfsrpc_writerpc() for more info.) 1447 */ 1448 error = nfscl_request(nd, vp, p, cred, stuff); 1449 if (error) 1450 return (error); 1451 if (nd->nd_flag & ND_NFSV3) { 1452 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 1453 } else if (!nd->nd_repstat && (nd->nd_flag & ND_NFSV2)) { 1454 error = nfsm_loadattr(nd, nap); 1455 if (!error) 1456 *attrflagp = 1; 1457 } 1458 if (nd->nd_repstat || error) { 1459 if (!error) 1460 error = nd->nd_repstat; 1461 goto nfsmout; 1462 } 1463 if (nd->nd_flag & ND_NFSV3) { 1464 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1465 eof = fxdr_unsigned(int, *(tl + 1)); 1466 } else if (nd->nd_flag & ND_NFSV4) { 1467 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 1468 eof = fxdr_unsigned(int, *tl); 1469 } 1470 NFSM_STRSIZ(retlen, len); 1471 error = nfsm_mbufuio(nd, uiop, retlen); 1472 if (error) 1473 goto nfsmout; 1474 mbuf_freem(nd->nd_mrep); 1475 nd->nd_mrep = NULL; 1476 tsiz -= retlen; 1477 if (!(nd->nd_flag & ND_NFSV2)) { 1478 if (eof || retlen == 0) 1479 tsiz = 0; 1480 } else if (retlen < len) 1481 tsiz = 0; 1482 } 1483 return (0); 1484 nfsmout: 1485 mbuf_freem(nd->nd_mrep); 1486 return (error); 1487 } 1488 1489 /* 1490 * nfs write operation 1491 * When called_from_strategy != 0, it should return EIO for an error that 1492 * indicates recovery is in progress, so that the buffer will be left 1493 * dirty and be written back to the server later. If it loops around, 1494 * the recovery thread could get stuck waiting for the buffer and recovery 1495 * will then deadlock. 1496 */ 1497 APPLESTATIC int 1498 nfsrpc_write(vnode_t vp, struct uio *uiop, int *iomode, int *must_commit, 1499 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, 1500 void *stuff, int called_from_strategy) 1501 { 1502 int error, expireret = 0, retrycnt, nostateid; 1503 u_int32_t clidrev = 0; 1504 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 1505 struct nfsnode *np = VTONFS(vp); 1506 struct ucred *newcred; 1507 struct nfsfh *nfhp = NULL; 1508 nfsv4stateid_t stateid; 1509 void *lckp; 1510 1511 *must_commit = 0; 1512 if (nmp->nm_clp != NULL) 1513 clidrev = nmp->nm_clp->nfsc_clientidrev; 1514 newcred = cred; 1515 if (NFSHASNFSV4(nmp)) { 1516 newcred = NFSNEWCRED(cred); 1517 nfhp = np->n_fhp; 1518 } 1519 retrycnt = 0; 1520 do { 1521 lckp = NULL; 1522 nostateid = 0; 1523 if (NFSHASNFSV4(nmp)) { 1524 (void)nfscl_getstateid(vp, nfhp->nfh_fh, nfhp->nfh_len, 1525 NFSV4OPEN_ACCESSWRITE, 0, newcred, p, &stateid, 1526 &lckp); 1527 if (stateid.other[0] == 0 && stateid.other[1] == 0 && 1528 stateid.other[2] == 0) { 1529 nostateid = 1; 1530 NFSCL_DEBUG(1, "stateid0 in write\n"); 1531 } 1532 } 1533 1534 /* 1535 * If there is no stateid for NFSv4, it means this is an 1536 * extraneous write after close. Basically a poorly 1537 * implemented buffer cache. Just don't do the write. 1538 */ 1539 if (nostateid) 1540 error = 0; 1541 else 1542 error = nfsrpc_writerpc(vp, uiop, iomode, must_commit, 1543 newcred, &stateid, p, nap, attrflagp, stuff); 1544 if (error == NFSERR_STALESTATEID || error == NFSERR_BADSESSION) 1545 nfscl_initiate_recovery(nmp->nm_clp); 1546 if (lckp != NULL) 1547 nfscl_lockderef(lckp); 1548 if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 1549 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 1550 error == NFSERR_OLDSTATEID || error == NFSERR_BADSESSION) { 1551 (void) nfs_catnap(PZERO, error, "nfs_write"); 1552 } else if ((error == NFSERR_EXPIRED || 1553 error == NFSERR_BADSTATEID) && clidrev != 0) { 1554 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p); 1555 } 1556 retrycnt++; 1557 } while (error == NFSERR_GRACE || error == NFSERR_DELAY || 1558 ((error == NFSERR_STALESTATEID || error == NFSERR_BADSESSION || 1559 error == NFSERR_STALEDONTRECOVER) && called_from_strategy == 0) || 1560 (error == NFSERR_OLDSTATEID && retrycnt < 20) || 1561 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) && 1562 expireret == 0 && clidrev != 0 && retrycnt < 4)); 1563 if (error != 0 && (retrycnt >= 4 || 1564 ((error == NFSERR_STALESTATEID || error == NFSERR_BADSESSION || 1565 error == NFSERR_STALEDONTRECOVER) && called_from_strategy != 0))) 1566 error = EIO; 1567 if (NFSHASNFSV4(nmp)) 1568 NFSFREECRED(newcred); 1569 return (error); 1570 } 1571 1572 /* 1573 * The actual write RPC. 1574 */ 1575 static int 1576 nfsrpc_writerpc(vnode_t vp, struct uio *uiop, int *iomode, 1577 int *must_commit, struct ucred *cred, nfsv4stateid_t *stateidp, 1578 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff) 1579 { 1580 u_int32_t *tl; 1581 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 1582 struct nfsnode *np = VTONFS(vp); 1583 int error = 0, len, tsiz, rlen, commit, committed = NFSWRITE_FILESYNC; 1584 int wccflag = 0, wsize; 1585 int32_t backup; 1586 struct nfsrv_descript nfsd; 1587 struct nfsrv_descript *nd = &nfsd; 1588 nfsattrbit_t attrbits; 1589 off_t tmp_off; 1590 1591 KASSERT(uiop->uio_iovcnt == 1, ("nfs: writerpc iovcnt > 1")); 1592 *attrflagp = 0; 1593 tsiz = uio_uio_resid(uiop); 1594 tmp_off = uiop->uio_offset + tsiz; 1595 NFSLOCKMNT(nmp); 1596 if (tmp_off > nmp->nm_maxfilesize || tmp_off < uiop->uio_offset) { 1597 NFSUNLOCKMNT(nmp); 1598 return (EFBIG); 1599 } 1600 wsize = nmp->nm_wsize; 1601 NFSUNLOCKMNT(nmp); 1602 nd->nd_mrep = NULL; /* NFSv2 sometimes does a write with */ 1603 nd->nd_repstat = 0; /* uio_resid == 0, so the while is not done */ 1604 while (tsiz > 0) { 1605 *attrflagp = 0; 1606 len = (tsiz > wsize) ? wsize : tsiz; 1607 NFSCL_REQSTART(nd, NFSPROC_WRITE, vp); 1608 if (nd->nd_flag & ND_NFSV4) { 1609 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID); 1610 NFSM_BUILD(tl, u_int32_t *, NFSX_HYPER+2*NFSX_UNSIGNED); 1611 txdr_hyper(uiop->uio_offset, tl); 1612 tl += 2; 1613 *tl++ = txdr_unsigned(*iomode); 1614 *tl = txdr_unsigned(len); 1615 } else if (nd->nd_flag & ND_NFSV3) { 1616 NFSM_BUILD(tl, u_int32_t *, NFSX_HYPER+3*NFSX_UNSIGNED); 1617 txdr_hyper(uiop->uio_offset, tl); 1618 tl += 2; 1619 *tl++ = txdr_unsigned(len); 1620 *tl++ = txdr_unsigned(*iomode); 1621 *tl = txdr_unsigned(len); 1622 } else { 1623 u_int32_t x; 1624 1625 NFSM_BUILD(tl, u_int32_t *, 4 * NFSX_UNSIGNED); 1626 /* 1627 * Not sure why someone changed this, since the 1628 * RFC clearly states that "beginoffset" and 1629 * "totalcount" are ignored, but it wouldn't 1630 * surprise me if there's a busted server out there. 1631 */ 1632 /* Set both "begin" and "current" to non-garbage. */ 1633 x = txdr_unsigned((u_int32_t)uiop->uio_offset); 1634 *tl++ = x; /* "begin offset" */ 1635 *tl++ = x; /* "current offset" */ 1636 x = txdr_unsigned(len); 1637 *tl++ = x; /* total to this offset */ 1638 *tl = x; /* size of this write */ 1639 1640 } 1641 nfsm_uiombuf(nd, uiop, len); 1642 /* 1643 * Although it is tempting to do a normal Getattr Op in the 1644 * NFSv4 compound, the result can be a nearly hung client 1645 * system if the Getattr asks for Owner and/or OwnerGroup. 1646 * It occurs when the client can't map either the Owner or 1647 * Owner_group name in the Getattr reply to a uid/gid. When 1648 * there is a cache miss, the kernel does an upcall to the 1649 * nfsuserd. Then, it can try and read the local /etc/passwd 1650 * or /etc/group file. It can then block in getnewbuf(), 1651 * waiting for dirty writes to be pushed to the NFS server. 1652 * The only reason this doesn't result in a complete 1653 * deadlock, is that the upcall times out and allows 1654 * the write to complete. However, progress is so slow 1655 * that it might just as well be deadlocked. 1656 * As such, we get the rest of the attributes, but not 1657 * Owner or Owner_group. 1658 * nb: nfscl_loadattrcache() needs to be told that these 1659 * partial attributes from a write rpc are being 1660 * passed in, via a argument flag. 1661 */ 1662 if (nd->nd_flag & ND_NFSV4) { 1663 NFSWRITEGETATTR_ATTRBIT(&attrbits); 1664 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1665 *tl = txdr_unsigned(NFSV4OP_GETATTR); 1666 (void) nfsrv_putattrbit(nd, &attrbits); 1667 } 1668 error = nfscl_request(nd, vp, p, cred, stuff); 1669 if (error) 1670 return (error); 1671 if (nd->nd_repstat) { 1672 /* 1673 * In case the rpc gets retried, roll 1674 * the uio fileds changed by nfsm_uiombuf() 1675 * back. 1676 */ 1677 uiop->uio_offset -= len; 1678 uio_uio_resid_add(uiop, len); 1679 uio_iov_base_add(uiop, -len); 1680 uio_iov_len_add(uiop, len); 1681 } 1682 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) { 1683 error = nfscl_wcc_data(nd, vp, nap, attrflagp, 1684 &wccflag, stuff); 1685 if (error) 1686 goto nfsmout; 1687 } 1688 if (!nd->nd_repstat) { 1689 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) { 1690 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED 1691 + NFSX_VERF); 1692 rlen = fxdr_unsigned(int, *tl++); 1693 if (rlen == 0) { 1694 error = NFSERR_IO; 1695 goto nfsmout; 1696 } else if (rlen < len) { 1697 backup = len - rlen; 1698 uio_iov_base_add(uiop, -(backup)); 1699 uio_iov_len_add(uiop, backup); 1700 uiop->uio_offset -= backup; 1701 uio_uio_resid_add(uiop, backup); 1702 len = rlen; 1703 } 1704 commit = fxdr_unsigned(int, *tl++); 1705 1706 /* 1707 * Return the lowest commitment level 1708 * obtained by any of the RPCs. 1709 */ 1710 if (committed == NFSWRITE_FILESYNC) 1711 committed = commit; 1712 else if (committed == NFSWRITE_DATASYNC && 1713 commit == NFSWRITE_UNSTABLE) 1714 committed = commit; 1715 NFSLOCKMNT(nmp); 1716 if (!NFSHASWRITEVERF(nmp)) { 1717 NFSBCOPY((caddr_t)tl, 1718 (caddr_t)&nmp->nm_verf[0], 1719 NFSX_VERF); 1720 NFSSETWRITEVERF(nmp); 1721 } else if (NFSBCMP(tl, nmp->nm_verf, 1722 NFSX_VERF)) { 1723 *must_commit = 1; 1724 NFSBCOPY(tl, nmp->nm_verf, NFSX_VERF); 1725 } 1726 NFSUNLOCKMNT(nmp); 1727 } 1728 if (nd->nd_flag & ND_NFSV4) 1729 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1730 if (nd->nd_flag & (ND_NFSV2 | ND_NFSV4)) { 1731 error = nfsm_loadattr(nd, nap); 1732 if (!error) 1733 *attrflagp = NFS_LATTR_NOSHRINK; 1734 } 1735 } else { 1736 error = nd->nd_repstat; 1737 } 1738 if (error) 1739 goto nfsmout; 1740 NFSWRITERPC_SETTIME(wccflag, np, nap, (nd->nd_flag & ND_NFSV4)); 1741 mbuf_freem(nd->nd_mrep); 1742 nd->nd_mrep = NULL; 1743 tsiz -= len; 1744 } 1745 nfsmout: 1746 mbuf_freem(nd->nd_mrep); 1747 *iomode = committed; 1748 if (nd->nd_repstat && !error) 1749 error = nd->nd_repstat; 1750 return (error); 1751 } 1752 1753 /* 1754 * nfs mknod rpc 1755 * For NFS v2 this is a kludge. Use a create rpc but with the IFMT bits of the 1756 * mode set to specify the file type and the size field for rdev. 1757 */ 1758 APPLESTATIC int 1759 nfsrpc_mknod(vnode_t dvp, char *name, int namelen, struct vattr *vap, 1760 u_int32_t rdev, enum vtype vtyp, struct ucred *cred, NFSPROC_T *p, 1761 struct nfsvattr *dnap, struct nfsvattr *nnap, struct nfsfh **nfhpp, 1762 int *attrflagp, int *dattrflagp, void *dstuff) 1763 { 1764 u_int32_t *tl; 1765 int error = 0; 1766 struct nfsrv_descript nfsd, *nd = &nfsd; 1767 nfsattrbit_t attrbits; 1768 1769 *nfhpp = NULL; 1770 *attrflagp = 0; 1771 *dattrflagp = 0; 1772 if (namelen > NFS_MAXNAMLEN) 1773 return (ENAMETOOLONG); 1774 NFSCL_REQSTART(nd, NFSPROC_MKNOD, dvp); 1775 if (nd->nd_flag & ND_NFSV4) { 1776 if (vtyp == VBLK || vtyp == VCHR) { 1777 NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 1778 *tl++ = vtonfsv34_type(vtyp); 1779 *tl++ = txdr_unsigned(NFSMAJOR(rdev)); 1780 *tl = txdr_unsigned(NFSMINOR(rdev)); 1781 } else { 1782 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1783 *tl = vtonfsv34_type(vtyp); 1784 } 1785 } 1786 (void) nfsm_strtom(nd, name, namelen); 1787 if (nd->nd_flag & ND_NFSV3) { 1788 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1789 *tl = vtonfsv34_type(vtyp); 1790 } 1791 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) 1792 nfscl_fillsattr(nd, vap, dvp, 0, 0); 1793 if ((nd->nd_flag & ND_NFSV3) && 1794 (vtyp == VCHR || vtyp == VBLK)) { 1795 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1796 *tl++ = txdr_unsigned(NFSMAJOR(rdev)); 1797 *tl = txdr_unsigned(NFSMINOR(rdev)); 1798 } 1799 if (nd->nd_flag & ND_NFSV4) { 1800 NFSGETATTR_ATTRBIT(&attrbits); 1801 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1802 *tl++ = txdr_unsigned(NFSV4OP_GETFH); 1803 *tl = txdr_unsigned(NFSV4OP_GETATTR); 1804 (void) nfsrv_putattrbit(nd, &attrbits); 1805 } 1806 if (nd->nd_flag & ND_NFSV2) 1807 nfscl_fillsattr(nd, vap, dvp, NFSSATTR_SIZERDEV, rdev); 1808 error = nfscl_request(nd, dvp, p, cred, dstuff); 1809 if (error) 1810 return (error); 1811 if (nd->nd_flag & ND_NFSV4) 1812 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 1813 if (!nd->nd_repstat) { 1814 if (nd->nd_flag & ND_NFSV4) { 1815 NFSM_DISSECT(tl, u_int32_t *, 5 * NFSX_UNSIGNED); 1816 error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL); 1817 if (error) 1818 goto nfsmout; 1819 } 1820 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp); 1821 if (error) 1822 goto nfsmout; 1823 } 1824 if (nd->nd_flag & ND_NFSV3) 1825 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 1826 if (!error && nd->nd_repstat) 1827 error = nd->nd_repstat; 1828 nfsmout: 1829 mbuf_freem(nd->nd_mrep); 1830 return (error); 1831 } 1832 1833 /* 1834 * nfs file create call 1835 * Mostly just call the approriate routine. (I separated out v4, so that 1836 * error recovery wouldn't be as difficult.) 1837 */ 1838 APPLESTATIC int 1839 nfsrpc_create(vnode_t dvp, char *name, int namelen, struct vattr *vap, 1840 nfsquad_t cverf, int fmode, struct ucred *cred, NFSPROC_T *p, 1841 struct nfsvattr *dnap, struct nfsvattr *nnap, struct nfsfh **nfhpp, 1842 int *attrflagp, int *dattrflagp, void *dstuff) 1843 { 1844 int error = 0, newone, expireret = 0, retrycnt, unlocked; 1845 struct nfsclowner *owp; 1846 struct nfscldeleg *dp; 1847 struct nfsmount *nmp = VFSTONFS(vnode_mount(dvp)); 1848 u_int32_t clidrev; 1849 1850 if (NFSHASNFSV4(nmp)) { 1851 retrycnt = 0; 1852 do { 1853 dp = NULL; 1854 error = nfscl_open(dvp, NULL, 0, (NFSV4OPEN_ACCESSWRITE | 1855 NFSV4OPEN_ACCESSREAD), 0, cred, p, &owp, NULL, &newone, 1856 NULL, 1); 1857 if (error) 1858 return (error); 1859 if (nmp->nm_clp != NULL) 1860 clidrev = nmp->nm_clp->nfsc_clientidrev; 1861 else 1862 clidrev = 0; 1863 error = nfsrpc_createv4(dvp, name, namelen, vap, cverf, fmode, 1864 owp, &dp, cred, p, dnap, nnap, nfhpp, attrflagp, dattrflagp, 1865 dstuff, &unlocked); 1866 /* 1867 * There is no need to invalidate cached attributes here, 1868 * since new post-delegation issue attributes are always 1869 * returned by nfsrpc_createv4() and these will update the 1870 * attribute cache. 1871 */ 1872 if (dp != NULL) 1873 (void) nfscl_deleg(nmp->nm_mountp, owp->nfsow_clp, 1874 (*nfhpp)->nfh_fh, (*nfhpp)->nfh_len, cred, p, &dp); 1875 nfscl_ownerrelease(owp, error, newone, unlocked); 1876 if (error == NFSERR_GRACE || error == NFSERR_STALECLIENTID || 1877 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 1878 error == NFSERR_BADSESSION) { 1879 (void) nfs_catnap(PZERO, error, "nfs_open"); 1880 } else if ((error == NFSERR_EXPIRED || 1881 error == NFSERR_BADSTATEID) && clidrev != 0) { 1882 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p); 1883 retrycnt++; 1884 } 1885 } while (error == NFSERR_GRACE || error == NFSERR_STALECLIENTID || 1886 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 1887 error == NFSERR_BADSESSION || 1888 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) && 1889 expireret == 0 && clidrev != 0 && retrycnt < 4)); 1890 if (error && retrycnt >= 4) 1891 error = EIO; 1892 } else { 1893 error = nfsrpc_createv23(dvp, name, namelen, vap, cverf, 1894 fmode, cred, p, dnap, nnap, nfhpp, attrflagp, dattrflagp, 1895 dstuff); 1896 } 1897 return (error); 1898 } 1899 1900 /* 1901 * The create rpc for v2 and 3. 1902 */ 1903 static int 1904 nfsrpc_createv23(vnode_t dvp, char *name, int namelen, struct vattr *vap, 1905 nfsquad_t cverf, int fmode, struct ucred *cred, NFSPROC_T *p, 1906 struct nfsvattr *dnap, struct nfsvattr *nnap, struct nfsfh **nfhpp, 1907 int *attrflagp, int *dattrflagp, void *dstuff) 1908 { 1909 u_int32_t *tl; 1910 int error = 0; 1911 struct nfsrv_descript nfsd, *nd = &nfsd; 1912 1913 *nfhpp = NULL; 1914 *attrflagp = 0; 1915 *dattrflagp = 0; 1916 if (namelen > NFS_MAXNAMLEN) 1917 return (ENAMETOOLONG); 1918 NFSCL_REQSTART(nd, NFSPROC_CREATE, dvp); 1919 (void) nfsm_strtom(nd, name, namelen); 1920 if (nd->nd_flag & ND_NFSV3) { 1921 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1922 if (fmode & O_EXCL) { 1923 *tl = txdr_unsigned(NFSCREATE_EXCLUSIVE); 1924 NFSM_BUILD(tl, u_int32_t *, NFSX_VERF); 1925 *tl++ = cverf.lval[0]; 1926 *tl = cverf.lval[1]; 1927 } else { 1928 *tl = txdr_unsigned(NFSCREATE_UNCHECKED); 1929 nfscl_fillsattr(nd, vap, dvp, 0, 0); 1930 } 1931 } else { 1932 nfscl_fillsattr(nd, vap, dvp, NFSSATTR_SIZE0, 0); 1933 } 1934 error = nfscl_request(nd, dvp, p, cred, dstuff); 1935 if (error) 1936 return (error); 1937 if (nd->nd_repstat == 0) { 1938 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp); 1939 if (error) 1940 goto nfsmout; 1941 } 1942 if (nd->nd_flag & ND_NFSV3) 1943 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 1944 if (nd->nd_repstat != 0 && error == 0) 1945 error = nd->nd_repstat; 1946 nfsmout: 1947 mbuf_freem(nd->nd_mrep); 1948 return (error); 1949 } 1950 1951 static int 1952 nfsrpc_createv4(vnode_t dvp, char *name, int namelen, struct vattr *vap, 1953 nfsquad_t cverf, int fmode, struct nfsclowner *owp, struct nfscldeleg **dpp, 1954 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap, 1955 struct nfsvattr *nnap, struct nfsfh **nfhpp, int *attrflagp, 1956 int *dattrflagp, void *dstuff, int *unlockedp) 1957 { 1958 u_int32_t *tl; 1959 int error = 0, deleg, newone, ret, acesize, limitby; 1960 struct nfsrv_descript nfsd, *nd = &nfsd; 1961 struct nfsclopen *op; 1962 struct nfscldeleg *dp = NULL; 1963 struct nfsnode *np; 1964 struct nfsfh *nfhp; 1965 nfsattrbit_t attrbits; 1966 nfsv4stateid_t stateid; 1967 u_int32_t rflags; 1968 struct nfsmount *nmp; 1969 1970 nmp = VFSTONFS(dvp->v_mount); 1971 np = VTONFS(dvp); 1972 *unlockedp = 0; 1973 *nfhpp = NULL; 1974 *dpp = NULL; 1975 *attrflagp = 0; 1976 *dattrflagp = 0; 1977 if (namelen > NFS_MAXNAMLEN) 1978 return (ENAMETOOLONG); 1979 NFSCL_REQSTART(nd, NFSPROC_CREATE, dvp); 1980 /* 1981 * For V4, this is actually an Open op. 1982 */ 1983 NFSM_BUILD(tl, u_int32_t *, 5 * NFSX_UNSIGNED); 1984 *tl++ = txdr_unsigned(owp->nfsow_seqid); 1985 *tl++ = txdr_unsigned(NFSV4OPEN_ACCESSWRITE | 1986 NFSV4OPEN_ACCESSREAD); 1987 *tl++ = txdr_unsigned(NFSV4OPEN_DENYNONE); 1988 *tl++ = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[0]; 1989 *tl = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[1]; 1990 (void) nfsm_strtom(nd, owp->nfsow_owner, NFSV4CL_LOCKNAMELEN); 1991 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1992 *tl++ = txdr_unsigned(NFSV4OPEN_CREATE); 1993 if (fmode & O_EXCL) { 1994 if (NFSHASNFSV4N(nmp)) { 1995 if (NFSHASSESSPERSIST(nmp)) { 1996 /* Use GUARDED for persistent sessions. */ 1997 *tl = txdr_unsigned(NFSCREATE_GUARDED); 1998 nfscl_fillsattr(nd, vap, dvp, 0, 0); 1999 } else { 2000 /* Otherwise, use EXCLUSIVE4_1. */ 2001 *tl = txdr_unsigned(NFSCREATE_EXCLUSIVE41); 2002 NFSM_BUILD(tl, u_int32_t *, NFSX_VERF); 2003 *tl++ = cverf.lval[0]; 2004 *tl = cverf.lval[1]; 2005 nfscl_fillsattr(nd, vap, dvp, 0, 0); 2006 } 2007 } else { 2008 /* NFSv4.0 */ 2009 *tl = txdr_unsigned(NFSCREATE_EXCLUSIVE); 2010 NFSM_BUILD(tl, u_int32_t *, NFSX_VERF); 2011 *tl++ = cverf.lval[0]; 2012 *tl = cverf.lval[1]; 2013 } 2014 } else { 2015 *tl = txdr_unsigned(NFSCREATE_UNCHECKED); 2016 nfscl_fillsattr(nd, vap, dvp, 0, 0); 2017 } 2018 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2019 *tl = txdr_unsigned(NFSV4OPEN_CLAIMNULL); 2020 (void) nfsm_strtom(nd, name, namelen); 2021 /* Get the new file's handle and attributes. */ 2022 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2023 *tl++ = txdr_unsigned(NFSV4OP_GETFH); 2024 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2025 NFSGETATTR_ATTRBIT(&attrbits); 2026 (void) nfsrv_putattrbit(nd, &attrbits); 2027 /* Get the directory's post-op attributes. */ 2028 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2029 *tl = txdr_unsigned(NFSV4OP_PUTFH); 2030 (void) nfsm_fhtom(nd, np->n_fhp->nfh_fh, np->n_fhp->nfh_len, 0); 2031 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2032 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2033 (void) nfsrv_putattrbit(nd, &attrbits); 2034 error = nfscl_request(nd, dvp, p, cred, dstuff); 2035 if (error) 2036 return (error); 2037 NFSCL_INCRSEQID(owp->nfsow_seqid, nd); 2038 if (nd->nd_repstat == 0) { 2039 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID + 2040 6 * NFSX_UNSIGNED); 2041 stateid.seqid = *tl++; 2042 stateid.other[0] = *tl++; 2043 stateid.other[1] = *tl++; 2044 stateid.other[2] = *tl; 2045 rflags = fxdr_unsigned(u_int32_t, *(tl + 6)); 2046 (void) nfsrv_getattrbits(nd, &attrbits, NULL, NULL); 2047 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2048 deleg = fxdr_unsigned(int, *tl); 2049 if (deleg == NFSV4OPEN_DELEGATEREAD || 2050 deleg == NFSV4OPEN_DELEGATEWRITE) { 2051 if (!(owp->nfsow_clp->nfsc_flags & 2052 NFSCLFLAGS_FIRSTDELEG)) 2053 owp->nfsow_clp->nfsc_flags |= 2054 (NFSCLFLAGS_FIRSTDELEG | NFSCLFLAGS_GOTDELEG); 2055 MALLOC(dp, struct nfscldeleg *, 2056 sizeof (struct nfscldeleg) + NFSX_V4FHMAX, 2057 M_NFSCLDELEG, M_WAITOK); 2058 LIST_INIT(&dp->nfsdl_owner); 2059 LIST_INIT(&dp->nfsdl_lock); 2060 dp->nfsdl_clp = owp->nfsow_clp; 2061 newnfs_copyincred(cred, &dp->nfsdl_cred); 2062 nfscl_lockinit(&dp->nfsdl_rwlock); 2063 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID + 2064 NFSX_UNSIGNED); 2065 dp->nfsdl_stateid.seqid = *tl++; 2066 dp->nfsdl_stateid.other[0] = *tl++; 2067 dp->nfsdl_stateid.other[1] = *tl++; 2068 dp->nfsdl_stateid.other[2] = *tl++; 2069 ret = fxdr_unsigned(int, *tl); 2070 if (deleg == NFSV4OPEN_DELEGATEWRITE) { 2071 dp->nfsdl_flags = NFSCLDL_WRITE; 2072 /* 2073 * Indicates how much the file can grow. 2074 */ 2075 NFSM_DISSECT(tl, u_int32_t *, 2076 3 * NFSX_UNSIGNED); 2077 limitby = fxdr_unsigned(int, *tl++); 2078 switch (limitby) { 2079 case NFSV4OPEN_LIMITSIZE: 2080 dp->nfsdl_sizelimit = fxdr_hyper(tl); 2081 break; 2082 case NFSV4OPEN_LIMITBLOCKS: 2083 dp->nfsdl_sizelimit = 2084 fxdr_unsigned(u_int64_t, *tl++); 2085 dp->nfsdl_sizelimit *= 2086 fxdr_unsigned(u_int64_t, *tl); 2087 break; 2088 default: 2089 error = NFSERR_BADXDR; 2090 goto nfsmout; 2091 } 2092 } else { 2093 dp->nfsdl_flags = NFSCLDL_READ; 2094 } 2095 if (ret) 2096 dp->nfsdl_flags |= NFSCLDL_RECALL; 2097 error = nfsrv_dissectace(nd, &dp->nfsdl_ace, &ret, 2098 &acesize, p); 2099 if (error) 2100 goto nfsmout; 2101 } else if (deleg != NFSV4OPEN_DELEGATENONE) { 2102 error = NFSERR_BADXDR; 2103 goto nfsmout; 2104 } 2105 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp); 2106 if (error) 2107 goto nfsmout; 2108 /* Get rid of the PutFH and Getattr status values. */ 2109 NFSM_DISSECT(tl, u_int32_t *, 4 * NFSX_UNSIGNED); 2110 /* Load the directory attributes. */ 2111 error = nfsm_loadattr(nd, dnap); 2112 if (error) 2113 goto nfsmout; 2114 *dattrflagp = 1; 2115 if (dp != NULL && *attrflagp) { 2116 dp->nfsdl_change = nnap->na_filerev; 2117 dp->nfsdl_modtime = nnap->na_mtime; 2118 dp->nfsdl_flags |= NFSCLDL_MODTIMESET; 2119 } 2120 /* 2121 * We can now complete the Open state. 2122 */ 2123 nfhp = *nfhpp; 2124 if (dp != NULL) { 2125 dp->nfsdl_fhlen = nfhp->nfh_len; 2126 NFSBCOPY(nfhp->nfh_fh, dp->nfsdl_fh, nfhp->nfh_len); 2127 } 2128 /* 2129 * Get an Open structure that will be 2130 * attached to the OpenOwner, acquired already. 2131 */ 2132 error = nfscl_open(dvp, nfhp->nfh_fh, nfhp->nfh_len, 2133 (NFSV4OPEN_ACCESSWRITE | NFSV4OPEN_ACCESSREAD), 0, 2134 cred, p, NULL, &op, &newone, NULL, 0); 2135 if (error) 2136 goto nfsmout; 2137 op->nfso_stateid = stateid; 2138 newnfs_copyincred(cred, &op->nfso_cred); 2139 if ((rflags & NFSV4OPEN_RESULTCONFIRM)) { 2140 do { 2141 ret = nfsrpc_openconfirm(dvp, nfhp->nfh_fh, 2142 nfhp->nfh_len, op, cred, p); 2143 if (ret == NFSERR_DELAY) 2144 (void) nfs_catnap(PZERO, ret, "nfs_create"); 2145 } while (ret == NFSERR_DELAY); 2146 error = ret; 2147 } 2148 2149 /* 2150 * If the server is handing out delegations, but we didn't 2151 * get one because an OpenConfirm was required, try the 2152 * Open again, to get a delegation. This is a harmless no-op, 2153 * from a server's point of view. 2154 */ 2155 if ((rflags & NFSV4OPEN_RESULTCONFIRM) && 2156 (owp->nfsow_clp->nfsc_flags & NFSCLFLAGS_GOTDELEG) && 2157 !error && dp == NULL) { 2158 do { 2159 ret = nfsrpc_openrpc(VFSTONFS(vnode_mount(dvp)), dvp, 2160 np->n_fhp->nfh_fh, np->n_fhp->nfh_len, 2161 nfhp->nfh_fh, nfhp->nfh_len, 2162 (NFSV4OPEN_ACCESSWRITE | NFSV4OPEN_ACCESSREAD), op, 2163 name, namelen, &dp, 0, 0x0, cred, p, 0, 1); 2164 if (ret == NFSERR_DELAY) 2165 (void) nfs_catnap(PZERO, ret, "nfs_crt2"); 2166 } while (ret == NFSERR_DELAY); 2167 if (ret) { 2168 if (dp != NULL) { 2169 FREE((caddr_t)dp, M_NFSCLDELEG); 2170 dp = NULL; 2171 } 2172 if (ret == NFSERR_STALECLIENTID || 2173 ret == NFSERR_STALEDONTRECOVER || 2174 ret == NFSERR_BADSESSION) 2175 error = ret; 2176 } 2177 } 2178 nfscl_openrelease(op, error, newone); 2179 *unlockedp = 1; 2180 } 2181 if (nd->nd_repstat != 0 && error == 0) 2182 error = nd->nd_repstat; 2183 if (error == NFSERR_STALECLIENTID || error == NFSERR_BADSESSION) 2184 nfscl_initiate_recovery(owp->nfsow_clp); 2185 nfsmout: 2186 if (!error) 2187 *dpp = dp; 2188 else if (dp != NULL) 2189 FREE((caddr_t)dp, M_NFSCLDELEG); 2190 mbuf_freem(nd->nd_mrep); 2191 return (error); 2192 } 2193 2194 /* 2195 * Nfs remove rpc 2196 */ 2197 APPLESTATIC int 2198 nfsrpc_remove(vnode_t dvp, char *name, int namelen, vnode_t vp, 2199 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap, int *dattrflagp, 2200 void *dstuff) 2201 { 2202 u_int32_t *tl; 2203 struct nfsrv_descript nfsd, *nd = &nfsd; 2204 struct nfsnode *np; 2205 struct nfsmount *nmp; 2206 nfsv4stateid_t dstateid; 2207 int error, ret = 0, i; 2208 2209 *dattrflagp = 0; 2210 if (namelen > NFS_MAXNAMLEN) 2211 return (ENAMETOOLONG); 2212 nmp = VFSTONFS(vnode_mount(dvp)); 2213 tryagain: 2214 if (NFSHASNFSV4(nmp) && ret == 0) { 2215 ret = nfscl_removedeleg(vp, p, &dstateid); 2216 if (ret == 1) { 2217 NFSCL_REQSTART(nd, NFSPROC_RETDELEGREMOVE, vp); 2218 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID + 2219 NFSX_UNSIGNED); 2220 if (NFSHASNFSV4N(nmp)) 2221 *tl++ = 0; 2222 else 2223 *tl++ = dstateid.seqid; 2224 *tl++ = dstateid.other[0]; 2225 *tl++ = dstateid.other[1]; 2226 *tl++ = dstateid.other[2]; 2227 *tl = txdr_unsigned(NFSV4OP_PUTFH); 2228 np = VTONFS(dvp); 2229 (void) nfsm_fhtom(nd, np->n_fhp->nfh_fh, 2230 np->n_fhp->nfh_len, 0); 2231 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2232 *tl = txdr_unsigned(NFSV4OP_REMOVE); 2233 } 2234 } else { 2235 ret = 0; 2236 } 2237 if (ret == 0) 2238 NFSCL_REQSTART(nd, NFSPROC_REMOVE, dvp); 2239 (void) nfsm_strtom(nd, name, namelen); 2240 error = nfscl_request(nd, dvp, p, cred, dstuff); 2241 if (error) 2242 return (error); 2243 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) { 2244 /* For NFSv4, parse out any Delereturn replies. */ 2245 if (ret > 0 && nd->nd_repstat != 0 && 2246 (nd->nd_flag & ND_NOMOREDATA)) { 2247 /* 2248 * If the Delegreturn failed, try again without 2249 * it. The server will Recall, as required. 2250 */ 2251 mbuf_freem(nd->nd_mrep); 2252 goto tryagain; 2253 } 2254 for (i = 0; i < (ret * 2); i++) { 2255 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == 2256 ND_NFSV4) { 2257 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2258 if (*(tl + 1)) 2259 nd->nd_flag |= ND_NOMOREDATA; 2260 } 2261 } 2262 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 2263 } 2264 if (nd->nd_repstat && !error) 2265 error = nd->nd_repstat; 2266 nfsmout: 2267 mbuf_freem(nd->nd_mrep); 2268 return (error); 2269 } 2270 2271 /* 2272 * Do an nfs rename rpc. 2273 */ 2274 APPLESTATIC int 2275 nfsrpc_rename(vnode_t fdvp, vnode_t fvp, char *fnameptr, int fnamelen, 2276 vnode_t tdvp, vnode_t tvp, char *tnameptr, int tnamelen, struct ucred *cred, 2277 NFSPROC_T *p, struct nfsvattr *fnap, struct nfsvattr *tnap, 2278 int *fattrflagp, int *tattrflagp, void *fstuff, void *tstuff) 2279 { 2280 u_int32_t *tl; 2281 struct nfsrv_descript nfsd, *nd = &nfsd; 2282 struct nfsmount *nmp; 2283 struct nfsnode *np; 2284 nfsattrbit_t attrbits; 2285 nfsv4stateid_t fdstateid, tdstateid; 2286 int error = 0, ret = 0, gottd = 0, gotfd = 0, i; 2287 2288 *fattrflagp = 0; 2289 *tattrflagp = 0; 2290 nmp = VFSTONFS(vnode_mount(fdvp)); 2291 if (fnamelen > NFS_MAXNAMLEN || tnamelen > NFS_MAXNAMLEN) 2292 return (ENAMETOOLONG); 2293 tryagain: 2294 if (NFSHASNFSV4(nmp) && ret == 0) { 2295 ret = nfscl_renamedeleg(fvp, &fdstateid, &gotfd, tvp, 2296 &tdstateid, &gottd, p); 2297 if (gotfd && gottd) { 2298 NFSCL_REQSTART(nd, NFSPROC_RETDELEGRENAME2, fvp); 2299 } else if (gotfd) { 2300 NFSCL_REQSTART(nd, NFSPROC_RETDELEGRENAME1, fvp); 2301 } else if (gottd) { 2302 NFSCL_REQSTART(nd, NFSPROC_RETDELEGRENAME1, tvp); 2303 } 2304 if (gotfd) { 2305 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID); 2306 if (NFSHASNFSV4N(nmp)) 2307 *tl++ = 0; 2308 else 2309 *tl++ = fdstateid.seqid; 2310 *tl++ = fdstateid.other[0]; 2311 *tl++ = fdstateid.other[1]; 2312 *tl = fdstateid.other[2]; 2313 if (gottd) { 2314 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2315 *tl = txdr_unsigned(NFSV4OP_PUTFH); 2316 np = VTONFS(tvp); 2317 (void) nfsm_fhtom(nd, np->n_fhp->nfh_fh, 2318 np->n_fhp->nfh_len, 0); 2319 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2320 *tl = txdr_unsigned(NFSV4OP_DELEGRETURN); 2321 } 2322 } 2323 if (gottd) { 2324 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID); 2325 if (NFSHASNFSV4N(nmp)) 2326 *tl++ = 0; 2327 else 2328 *tl++ = tdstateid.seqid; 2329 *tl++ = tdstateid.other[0]; 2330 *tl++ = tdstateid.other[1]; 2331 *tl = tdstateid.other[2]; 2332 } 2333 if (ret > 0) { 2334 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2335 *tl = txdr_unsigned(NFSV4OP_PUTFH); 2336 np = VTONFS(fdvp); 2337 (void) nfsm_fhtom(nd, np->n_fhp->nfh_fh, 2338 np->n_fhp->nfh_len, 0); 2339 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2340 *tl = txdr_unsigned(NFSV4OP_SAVEFH); 2341 } 2342 } else { 2343 ret = 0; 2344 } 2345 if (ret == 0) 2346 NFSCL_REQSTART(nd, NFSPROC_RENAME, fdvp); 2347 if (nd->nd_flag & ND_NFSV4) { 2348 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2349 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2350 NFSWCCATTR_ATTRBIT(&attrbits); 2351 (void) nfsrv_putattrbit(nd, &attrbits); 2352 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2353 *tl = txdr_unsigned(NFSV4OP_PUTFH); 2354 (void) nfsm_fhtom(nd, VTONFS(tdvp)->n_fhp->nfh_fh, 2355 VTONFS(tdvp)->n_fhp->nfh_len, 0); 2356 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2357 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2358 (void) nfsrv_putattrbit(nd, &attrbits); 2359 nd->nd_flag |= ND_V4WCCATTR; 2360 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2361 *tl = txdr_unsigned(NFSV4OP_RENAME); 2362 } 2363 (void) nfsm_strtom(nd, fnameptr, fnamelen); 2364 if (!(nd->nd_flag & ND_NFSV4)) 2365 (void) nfsm_fhtom(nd, VTONFS(tdvp)->n_fhp->nfh_fh, 2366 VTONFS(tdvp)->n_fhp->nfh_len, 0); 2367 (void) nfsm_strtom(nd, tnameptr, tnamelen); 2368 error = nfscl_request(nd, fdvp, p, cred, fstuff); 2369 if (error) 2370 return (error); 2371 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) { 2372 /* For NFSv4, parse out any Delereturn replies. */ 2373 if (ret > 0 && nd->nd_repstat != 0 && 2374 (nd->nd_flag & ND_NOMOREDATA)) { 2375 /* 2376 * If the Delegreturn failed, try again without 2377 * it. The server will Recall, as required. 2378 */ 2379 mbuf_freem(nd->nd_mrep); 2380 goto tryagain; 2381 } 2382 for (i = 0; i < (ret * 2); i++) { 2383 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == 2384 ND_NFSV4) { 2385 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2386 if (*(tl + 1)) { 2387 if (i == 0 && ret > 1) { 2388 /* 2389 * If the Delegreturn failed, try again 2390 * without it. The server will Recall, as 2391 * required. 2392 * If ret > 1, the first iteration of this 2393 * loop is the second DelegReturn result. 2394 */ 2395 mbuf_freem(nd->nd_mrep); 2396 goto tryagain; 2397 } else { 2398 nd->nd_flag |= ND_NOMOREDATA; 2399 } 2400 } 2401 } 2402 } 2403 /* Now, the first wcc attribute reply. */ 2404 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == ND_NFSV4) { 2405 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2406 if (*(tl + 1)) 2407 nd->nd_flag |= ND_NOMOREDATA; 2408 } 2409 error = nfscl_wcc_data(nd, fdvp, fnap, fattrflagp, NULL, 2410 fstuff); 2411 /* and the second wcc attribute reply. */ 2412 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == ND_NFSV4 && 2413 !error) { 2414 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2415 if (*(tl + 1)) 2416 nd->nd_flag |= ND_NOMOREDATA; 2417 } 2418 if (!error) 2419 error = nfscl_wcc_data(nd, tdvp, tnap, tattrflagp, 2420 NULL, tstuff); 2421 } 2422 if (nd->nd_repstat && !error) 2423 error = nd->nd_repstat; 2424 nfsmout: 2425 mbuf_freem(nd->nd_mrep); 2426 return (error); 2427 } 2428 2429 /* 2430 * nfs hard link create rpc 2431 */ 2432 APPLESTATIC int 2433 nfsrpc_link(vnode_t dvp, vnode_t vp, char *name, int namelen, 2434 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap, 2435 struct nfsvattr *nap, int *attrflagp, int *dattrflagp, void *dstuff) 2436 { 2437 u_int32_t *tl; 2438 struct nfsrv_descript nfsd, *nd = &nfsd; 2439 nfsattrbit_t attrbits; 2440 int error = 0; 2441 2442 *attrflagp = 0; 2443 *dattrflagp = 0; 2444 if (namelen > NFS_MAXNAMLEN) 2445 return (ENAMETOOLONG); 2446 NFSCL_REQSTART(nd, NFSPROC_LINK, vp); 2447 if (nd->nd_flag & ND_NFSV4) { 2448 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2449 *tl = txdr_unsigned(NFSV4OP_PUTFH); 2450 } 2451 (void) nfsm_fhtom(nd, VTONFS(dvp)->n_fhp->nfh_fh, 2452 VTONFS(dvp)->n_fhp->nfh_len, 0); 2453 if (nd->nd_flag & ND_NFSV4) { 2454 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2455 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2456 NFSWCCATTR_ATTRBIT(&attrbits); 2457 (void) nfsrv_putattrbit(nd, &attrbits); 2458 nd->nd_flag |= ND_V4WCCATTR; 2459 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2460 *tl = txdr_unsigned(NFSV4OP_LINK); 2461 } 2462 (void) nfsm_strtom(nd, name, namelen); 2463 error = nfscl_request(nd, vp, p, cred, dstuff); 2464 if (error) 2465 return (error); 2466 if (nd->nd_flag & ND_NFSV3) { 2467 error = nfscl_postop_attr(nd, nap, attrflagp, dstuff); 2468 if (!error) 2469 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, 2470 NULL, dstuff); 2471 } else if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == ND_NFSV4) { 2472 /* 2473 * First, parse out the PutFH and Getattr result. 2474 */ 2475 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2476 if (!(*(tl + 1))) 2477 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2478 if (*(tl + 1)) 2479 nd->nd_flag |= ND_NOMOREDATA; 2480 /* 2481 * Get the pre-op attributes. 2482 */ 2483 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 2484 } 2485 if (nd->nd_repstat && !error) 2486 error = nd->nd_repstat; 2487 nfsmout: 2488 mbuf_freem(nd->nd_mrep); 2489 return (error); 2490 } 2491 2492 /* 2493 * nfs symbolic link create rpc 2494 */ 2495 APPLESTATIC int 2496 nfsrpc_symlink(vnode_t dvp, char *name, int namelen, char *target, 2497 struct vattr *vap, struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap, 2498 struct nfsvattr *nnap, struct nfsfh **nfhpp, int *attrflagp, 2499 int *dattrflagp, void *dstuff) 2500 { 2501 u_int32_t *tl; 2502 struct nfsrv_descript nfsd, *nd = &nfsd; 2503 struct nfsmount *nmp; 2504 int slen, error = 0; 2505 2506 *nfhpp = NULL; 2507 *attrflagp = 0; 2508 *dattrflagp = 0; 2509 nmp = VFSTONFS(vnode_mount(dvp)); 2510 slen = strlen(target); 2511 if (slen > NFS_MAXPATHLEN || namelen > NFS_MAXNAMLEN) 2512 return (ENAMETOOLONG); 2513 NFSCL_REQSTART(nd, NFSPROC_SYMLINK, dvp); 2514 if (nd->nd_flag & ND_NFSV4) { 2515 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2516 *tl = txdr_unsigned(NFLNK); 2517 (void) nfsm_strtom(nd, target, slen); 2518 } 2519 (void) nfsm_strtom(nd, name, namelen); 2520 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) 2521 nfscl_fillsattr(nd, vap, dvp, 0, 0); 2522 if (!(nd->nd_flag & ND_NFSV4)) 2523 (void) nfsm_strtom(nd, target, slen); 2524 if (nd->nd_flag & ND_NFSV2) 2525 nfscl_fillsattr(nd, vap, dvp, NFSSATTR_SIZENEG1, 0); 2526 error = nfscl_request(nd, dvp, p, cred, dstuff); 2527 if (error) 2528 return (error); 2529 if (nd->nd_flag & ND_NFSV4) 2530 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 2531 if ((nd->nd_flag & ND_NFSV3) && !error) { 2532 if (!nd->nd_repstat) 2533 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp); 2534 if (!error) 2535 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, 2536 NULL, dstuff); 2537 } 2538 if (nd->nd_repstat && !error) 2539 error = nd->nd_repstat; 2540 mbuf_freem(nd->nd_mrep); 2541 /* 2542 * Kludge: Map EEXIST => 0 assuming that it is a reply to a retry. 2543 * Only do this if vfs.nfs.ignore_eexist is set. 2544 * Never do this for NFSv4.1 or later minor versions, since sessions 2545 * should guarantee "exactly once" RPC semantics. 2546 */ 2547 if (error == EEXIST && nfsignore_eexist != 0 && (!NFSHASNFSV4(nmp) || 2548 nmp->nm_minorvers == 0)) 2549 error = 0; 2550 return (error); 2551 } 2552 2553 /* 2554 * nfs make dir rpc 2555 */ 2556 APPLESTATIC int 2557 nfsrpc_mkdir(vnode_t dvp, char *name, int namelen, struct vattr *vap, 2558 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap, 2559 struct nfsvattr *nnap, struct nfsfh **nfhpp, int *attrflagp, 2560 int *dattrflagp, void *dstuff) 2561 { 2562 u_int32_t *tl; 2563 struct nfsrv_descript nfsd, *nd = &nfsd; 2564 nfsattrbit_t attrbits; 2565 int error = 0; 2566 struct nfsfh *fhp; 2567 struct nfsmount *nmp; 2568 2569 *nfhpp = NULL; 2570 *attrflagp = 0; 2571 *dattrflagp = 0; 2572 nmp = VFSTONFS(vnode_mount(dvp)); 2573 fhp = VTONFS(dvp)->n_fhp; 2574 if (namelen > NFS_MAXNAMLEN) 2575 return (ENAMETOOLONG); 2576 NFSCL_REQSTART(nd, NFSPROC_MKDIR, dvp); 2577 if (nd->nd_flag & ND_NFSV4) { 2578 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2579 *tl = txdr_unsigned(NFDIR); 2580 } 2581 (void) nfsm_strtom(nd, name, namelen); 2582 nfscl_fillsattr(nd, vap, dvp, NFSSATTR_SIZENEG1, 0); 2583 if (nd->nd_flag & ND_NFSV4) { 2584 NFSGETATTR_ATTRBIT(&attrbits); 2585 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2586 *tl++ = txdr_unsigned(NFSV4OP_GETFH); 2587 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2588 (void) nfsrv_putattrbit(nd, &attrbits); 2589 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2590 *tl = txdr_unsigned(NFSV4OP_PUTFH); 2591 (void) nfsm_fhtom(nd, fhp->nfh_fh, fhp->nfh_len, 0); 2592 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2593 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2594 (void) nfsrv_putattrbit(nd, &attrbits); 2595 } 2596 error = nfscl_request(nd, dvp, p, cred, dstuff); 2597 if (error) 2598 return (error); 2599 if (nd->nd_flag & ND_NFSV4) 2600 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 2601 if (!nd->nd_repstat && !error) { 2602 if (nd->nd_flag & ND_NFSV4) { 2603 NFSM_DISSECT(tl, u_int32_t *, 5 * NFSX_UNSIGNED); 2604 error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL); 2605 } 2606 if (!error) 2607 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp); 2608 if (error == 0 && (nd->nd_flag & ND_NFSV4) != 0) { 2609 /* Get rid of the PutFH and Getattr status values. */ 2610 NFSM_DISSECT(tl, u_int32_t *, 4 * NFSX_UNSIGNED); 2611 /* Load the directory attributes. */ 2612 error = nfsm_loadattr(nd, dnap); 2613 if (error == 0) 2614 *dattrflagp = 1; 2615 } 2616 } 2617 if ((nd->nd_flag & ND_NFSV3) && !error) 2618 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 2619 if (nd->nd_repstat && !error) 2620 error = nd->nd_repstat; 2621 nfsmout: 2622 mbuf_freem(nd->nd_mrep); 2623 /* 2624 * Kludge: Map EEXIST => 0 assuming that it is a reply to a retry. 2625 * Only do this if vfs.nfs.ignore_eexist is set. 2626 * Never do this for NFSv4.1 or later minor versions, since sessions 2627 * should guarantee "exactly once" RPC semantics. 2628 */ 2629 if (error == EEXIST && nfsignore_eexist != 0 && (!NFSHASNFSV4(nmp) || 2630 nmp->nm_minorvers == 0)) 2631 error = 0; 2632 return (error); 2633 } 2634 2635 /* 2636 * nfs remove directory call 2637 */ 2638 APPLESTATIC int 2639 nfsrpc_rmdir(vnode_t dvp, char *name, int namelen, struct ucred *cred, 2640 NFSPROC_T *p, struct nfsvattr *dnap, int *dattrflagp, void *dstuff) 2641 { 2642 struct nfsrv_descript nfsd, *nd = &nfsd; 2643 int error = 0; 2644 2645 *dattrflagp = 0; 2646 if (namelen > NFS_MAXNAMLEN) 2647 return (ENAMETOOLONG); 2648 NFSCL_REQSTART(nd, NFSPROC_RMDIR, dvp); 2649 (void) nfsm_strtom(nd, name, namelen); 2650 error = nfscl_request(nd, dvp, p, cred, dstuff); 2651 if (error) 2652 return (error); 2653 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) 2654 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 2655 if (nd->nd_repstat && !error) 2656 error = nd->nd_repstat; 2657 mbuf_freem(nd->nd_mrep); 2658 /* 2659 * Kludge: Map ENOENT => 0 assuming that you have a reply to a retry. 2660 */ 2661 if (error == ENOENT) 2662 error = 0; 2663 return (error); 2664 } 2665 2666 /* 2667 * Readdir rpc. 2668 * Always returns with either uio_resid unchanged, if you are at the 2669 * end of the directory, or uio_resid == 0, with all DIRBLKSIZ chunks 2670 * filled in. 2671 * I felt this would allow caching of directory blocks more easily 2672 * than returning a partially filled block. 2673 * Directory offset cookies: 2674 * Oh my, what to do with them... 2675 * I can think of three ways to deal with them: 2676 * 1 - have the layer above these RPCs maintain a map between logical 2677 * directory byte offsets and the NFS directory offset cookies 2678 * 2 - pass the opaque directory offset cookies up into userland 2679 * and let the libc functions deal with them, via the system call 2680 * 3 - return them to userland in the "struct dirent", so future versions 2681 * of libc can use them and do whatever is necessary to make things work 2682 * above these rpc calls, in the meantime 2683 * For now, I do #3 by "hiding" the directory offset cookies after the 2684 * d_name field in struct dirent. This is space inside d_reclen that 2685 * will be ignored by anything that doesn't know about them. 2686 * The directory offset cookies are filled in as the last 8 bytes of 2687 * each directory entry, after d_name. Someday, the userland libc 2688 * functions may be able to use these. In the meantime, it satisfies 2689 * OpenBSD's requirements for cookies being returned. 2690 * If expects the directory offset cookie for the read to be in uio_offset 2691 * and returns the one for the next entry after this directory block in 2692 * there, as well. 2693 */ 2694 APPLESTATIC int 2695 nfsrpc_readdir(vnode_t vp, struct uio *uiop, nfsuint64 *cookiep, 2696 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, 2697 int *eofp, void *stuff) 2698 { 2699 int len, left; 2700 struct dirent *dp = NULL; 2701 u_int32_t *tl; 2702 nfsquad_t cookie, ncookie; 2703 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 2704 struct nfsnode *dnp = VTONFS(vp); 2705 struct nfsvattr nfsva; 2706 struct nfsrv_descript nfsd, *nd = &nfsd; 2707 int error = 0, tlen, more_dirs = 1, blksiz = 0, bigenough = 1; 2708 int reqsize, tryformoredirs = 1, readsize, eof = 0, gotmnton = 0; 2709 long dotfileid, dotdotfileid = 0; 2710 u_int32_t fakefileno = 0xffffffff, rderr; 2711 char *cp; 2712 nfsattrbit_t attrbits, dattrbits; 2713 u_int32_t *tl2 = NULL; 2714 size_t tresid; 2715 2716 KASSERT(uiop->uio_iovcnt == 1 && 2717 (uio_uio_resid(uiop) & (DIRBLKSIZ - 1)) == 0, 2718 ("nfs readdirrpc bad uio")); 2719 2720 /* 2721 * There is no point in reading a lot more than uio_resid, however 2722 * adding one additional DIRBLKSIZ makes sense. Since uio_resid 2723 * and nm_readdirsize are both exact multiples of DIRBLKSIZ, this 2724 * will never make readsize > nm_readdirsize. 2725 */ 2726 readsize = nmp->nm_readdirsize; 2727 if (readsize > uio_uio_resid(uiop)) 2728 readsize = uio_uio_resid(uiop) + DIRBLKSIZ; 2729 2730 *attrflagp = 0; 2731 if (eofp) 2732 *eofp = 0; 2733 tresid = uio_uio_resid(uiop); 2734 cookie.lval[0] = cookiep->nfsuquad[0]; 2735 cookie.lval[1] = cookiep->nfsuquad[1]; 2736 nd->nd_mrep = NULL; 2737 2738 /* 2739 * For NFSv4, first create the "." and ".." entries. 2740 */ 2741 if (NFSHASNFSV4(nmp)) { 2742 reqsize = 6 * NFSX_UNSIGNED; 2743 NFSGETATTR_ATTRBIT(&dattrbits); 2744 NFSZERO_ATTRBIT(&attrbits); 2745 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_FILEID); 2746 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_TYPE); 2747 if (NFSISSET_ATTRBIT(&dnp->n_vattr.na_suppattr, 2748 NFSATTRBIT_MOUNTEDONFILEID)) { 2749 NFSSETBIT_ATTRBIT(&attrbits, 2750 NFSATTRBIT_MOUNTEDONFILEID); 2751 gotmnton = 1; 2752 } else { 2753 /* 2754 * Must fake it. Use the fileno, except when the 2755 * fsid is != to that of the directory. For that 2756 * case, generate a fake fileno that is not the same. 2757 */ 2758 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_FSID); 2759 gotmnton = 0; 2760 } 2761 2762 /* 2763 * Joy, oh joy. For V4 we get to hand craft '.' and '..'. 2764 */ 2765 if (uiop->uio_offset == 0) { 2766 NFSCL_REQSTART(nd, NFSPROC_LOOKUPP, vp); 2767 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2768 *tl++ = txdr_unsigned(NFSV4OP_GETFH); 2769 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2770 (void) nfsrv_putattrbit(nd, &attrbits); 2771 error = nfscl_request(nd, vp, p, cred, stuff); 2772 if (error) 2773 return (error); 2774 dotfileid = 0; /* Fake out the compiler. */ 2775 if ((nd->nd_flag & ND_NOMOREDATA) == 0) { 2776 error = nfsm_loadattr(nd, &nfsva); 2777 if (error != 0) 2778 goto nfsmout; 2779 dotfileid = nfsva.na_fileid; 2780 } 2781 if (nd->nd_repstat == 0) { 2782 NFSM_DISSECT(tl, u_int32_t *, 5 * NFSX_UNSIGNED); 2783 len = fxdr_unsigned(int, *(tl + 4)); 2784 if (len > 0 && len <= NFSX_V4FHMAX) 2785 error = nfsm_advance(nd, NFSM_RNDUP(len), -1); 2786 else 2787 error = EPERM; 2788 if (!error) { 2789 NFSM_DISSECT(tl, u_int32_t *, 2*NFSX_UNSIGNED); 2790 nfsva.na_mntonfileno = 0xffffffff; 2791 error = nfsv4_loadattr(nd, NULL, &nfsva, NULL, 2792 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0, 2793 NULL, NULL, NULL, p, cred); 2794 if (error) { 2795 dotdotfileid = dotfileid; 2796 } else if (gotmnton) { 2797 if (nfsva.na_mntonfileno != 0xffffffff) 2798 dotdotfileid = nfsva.na_mntonfileno; 2799 else 2800 dotdotfileid = nfsva.na_fileid; 2801 } else if (nfsva.na_filesid[0] == 2802 dnp->n_vattr.na_filesid[0] && 2803 nfsva.na_filesid[1] == 2804 dnp->n_vattr.na_filesid[1]) { 2805 dotdotfileid = nfsva.na_fileid; 2806 } else { 2807 do { 2808 fakefileno--; 2809 } while (fakefileno == 2810 nfsva.na_fileid); 2811 dotdotfileid = fakefileno; 2812 } 2813 } 2814 } else if (nd->nd_repstat == NFSERR_NOENT) { 2815 /* 2816 * Lookupp returns NFSERR_NOENT when we are 2817 * at the root, so just use the current dir. 2818 */ 2819 nd->nd_repstat = 0; 2820 dotdotfileid = dotfileid; 2821 } else { 2822 error = nd->nd_repstat; 2823 } 2824 mbuf_freem(nd->nd_mrep); 2825 if (error) 2826 return (error); 2827 nd->nd_mrep = NULL; 2828 dp = (struct dirent *) CAST_DOWN(caddr_t, uio_iov_base(uiop)); 2829 dp->d_type = DT_DIR; 2830 dp->d_fileno = dotfileid; 2831 dp->d_namlen = 1; 2832 dp->d_name[0] = '.'; 2833 dp->d_name[1] = '\0'; 2834 dp->d_reclen = DIRENT_SIZE(dp) + NFSX_HYPER; 2835 /* 2836 * Just make these offset cookie 0. 2837 */ 2838 tl = (u_int32_t *)&dp->d_name[4]; 2839 *tl++ = 0; 2840 *tl = 0; 2841 blksiz += dp->d_reclen; 2842 uio_uio_resid_add(uiop, -(dp->d_reclen)); 2843 uiop->uio_offset += dp->d_reclen; 2844 uio_iov_base_add(uiop, dp->d_reclen); 2845 uio_iov_len_add(uiop, -(dp->d_reclen)); 2846 dp = (struct dirent *) CAST_DOWN(caddr_t, uio_iov_base(uiop)); 2847 dp->d_type = DT_DIR; 2848 dp->d_fileno = dotdotfileid; 2849 dp->d_namlen = 2; 2850 dp->d_name[0] = '.'; 2851 dp->d_name[1] = '.'; 2852 dp->d_name[2] = '\0'; 2853 dp->d_reclen = DIRENT_SIZE(dp) + NFSX_HYPER; 2854 /* 2855 * Just make these offset cookie 0. 2856 */ 2857 tl = (u_int32_t *)&dp->d_name[4]; 2858 *tl++ = 0; 2859 *tl = 0; 2860 blksiz += dp->d_reclen; 2861 uio_uio_resid_add(uiop, -(dp->d_reclen)); 2862 uiop->uio_offset += dp->d_reclen; 2863 uio_iov_base_add(uiop, dp->d_reclen); 2864 uio_iov_len_add(uiop, -(dp->d_reclen)); 2865 } 2866 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_RDATTRERROR); 2867 } else { 2868 reqsize = 5 * NFSX_UNSIGNED; 2869 } 2870 2871 2872 /* 2873 * Loop around doing readdir rpc's of size readsize. 2874 * The stopping criteria is EOF or buffer full. 2875 */ 2876 while (more_dirs && bigenough) { 2877 *attrflagp = 0; 2878 NFSCL_REQSTART(nd, NFSPROC_READDIR, vp); 2879 if (nd->nd_flag & ND_NFSV2) { 2880 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2881 *tl++ = cookie.lval[1]; 2882 *tl = txdr_unsigned(readsize); 2883 } else { 2884 NFSM_BUILD(tl, u_int32_t *, reqsize); 2885 *tl++ = cookie.lval[0]; 2886 *tl++ = cookie.lval[1]; 2887 if (cookie.qval == 0) { 2888 *tl++ = 0; 2889 *tl++ = 0; 2890 } else { 2891 NFSLOCKNODE(dnp); 2892 *tl++ = dnp->n_cookieverf.nfsuquad[0]; 2893 *tl++ = dnp->n_cookieverf.nfsuquad[1]; 2894 NFSUNLOCKNODE(dnp); 2895 } 2896 if (nd->nd_flag & ND_NFSV4) { 2897 *tl++ = txdr_unsigned(readsize); 2898 *tl = txdr_unsigned(readsize); 2899 (void) nfsrv_putattrbit(nd, &attrbits); 2900 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2901 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2902 (void) nfsrv_putattrbit(nd, &dattrbits); 2903 } else { 2904 *tl = txdr_unsigned(readsize); 2905 } 2906 } 2907 error = nfscl_request(nd, vp, p, cred, stuff); 2908 if (error) 2909 return (error); 2910 if (!(nd->nd_flag & ND_NFSV2)) { 2911 if (nd->nd_flag & ND_NFSV3) 2912 error = nfscl_postop_attr(nd, nap, attrflagp, 2913 stuff); 2914 if (!nd->nd_repstat && !error) { 2915 NFSM_DISSECT(tl, u_int32_t *, NFSX_HYPER); 2916 NFSLOCKNODE(dnp); 2917 dnp->n_cookieverf.nfsuquad[0] = *tl++; 2918 dnp->n_cookieverf.nfsuquad[1] = *tl; 2919 NFSUNLOCKNODE(dnp); 2920 } 2921 } 2922 if (nd->nd_repstat || error) { 2923 if (!error) 2924 error = nd->nd_repstat; 2925 goto nfsmout; 2926 } 2927 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2928 more_dirs = fxdr_unsigned(int, *tl); 2929 if (!more_dirs) 2930 tryformoredirs = 0; 2931 2932 /* loop through the dir entries, doctoring them to 4bsd form */ 2933 while (more_dirs && bigenough) { 2934 if (nd->nd_flag & ND_NFSV4) { 2935 NFSM_DISSECT(tl, u_int32_t *, 3*NFSX_UNSIGNED); 2936 ncookie.lval[0] = *tl++; 2937 ncookie.lval[1] = *tl++; 2938 len = fxdr_unsigned(int, *tl); 2939 } else if (nd->nd_flag & ND_NFSV3) { 2940 NFSM_DISSECT(tl, u_int32_t *, 3*NFSX_UNSIGNED); 2941 nfsva.na_fileid = fxdr_hyper(tl); 2942 tl += 2; 2943 len = fxdr_unsigned(int, *tl); 2944 } else { 2945 NFSM_DISSECT(tl, u_int32_t *, 2*NFSX_UNSIGNED); 2946 nfsva.na_fileid = 2947 fxdr_unsigned(long, *tl++); 2948 len = fxdr_unsigned(int, *tl); 2949 } 2950 if (len <= 0 || len > NFS_MAXNAMLEN) { 2951 error = EBADRPC; 2952 goto nfsmout; 2953 } 2954 tlen = NFSM_RNDUP(len); 2955 if (tlen == len) 2956 tlen += 4; /* To ensure null termination */ 2957 left = DIRBLKSIZ - blksiz; 2958 if ((int)(tlen + DIRHDSIZ + NFSX_HYPER) > left) { 2959 dp->d_reclen += left; 2960 uio_iov_base_add(uiop, left); 2961 uio_iov_len_add(uiop, -(left)); 2962 uio_uio_resid_add(uiop, -(left)); 2963 uiop->uio_offset += left; 2964 blksiz = 0; 2965 } 2966 if ((int)(tlen + DIRHDSIZ + NFSX_HYPER) > uio_uio_resid(uiop)) 2967 bigenough = 0; 2968 if (bigenough) { 2969 dp = (struct dirent *) CAST_DOWN(caddr_t, uio_iov_base(uiop)); 2970 dp->d_namlen = len; 2971 dp->d_reclen = tlen + DIRHDSIZ + NFSX_HYPER; 2972 dp->d_type = DT_UNKNOWN; 2973 blksiz += dp->d_reclen; 2974 if (blksiz == DIRBLKSIZ) 2975 blksiz = 0; 2976 uio_uio_resid_add(uiop, -(DIRHDSIZ)); 2977 uiop->uio_offset += DIRHDSIZ; 2978 uio_iov_base_add(uiop, DIRHDSIZ); 2979 uio_iov_len_add(uiop, -(DIRHDSIZ)); 2980 error = nfsm_mbufuio(nd, uiop, len); 2981 if (error) 2982 goto nfsmout; 2983 cp = CAST_DOWN(caddr_t, uio_iov_base(uiop)); 2984 tlen -= len; 2985 *cp = '\0'; /* null terminate */ 2986 cp += tlen; /* points to cookie storage */ 2987 tl2 = (u_int32_t *)cp; 2988 uio_iov_base_add(uiop, (tlen + NFSX_HYPER)); 2989 uio_iov_len_add(uiop, -(tlen + NFSX_HYPER)); 2990 uio_uio_resid_add(uiop, -(tlen + NFSX_HYPER)); 2991 uiop->uio_offset += (tlen + NFSX_HYPER); 2992 } else { 2993 error = nfsm_advance(nd, NFSM_RNDUP(len), -1); 2994 if (error) 2995 goto nfsmout; 2996 } 2997 if (nd->nd_flag & ND_NFSV4) { 2998 rderr = 0; 2999 nfsva.na_mntonfileno = 0xffffffff; 3000 error = nfsv4_loadattr(nd, NULL, &nfsva, NULL, 3001 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0, 3002 NULL, NULL, &rderr, p, cred); 3003 if (error) 3004 goto nfsmout; 3005 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 3006 } else if (nd->nd_flag & ND_NFSV3) { 3007 NFSM_DISSECT(tl, u_int32_t *, 3*NFSX_UNSIGNED); 3008 ncookie.lval[0] = *tl++; 3009 ncookie.lval[1] = *tl++; 3010 } else { 3011 NFSM_DISSECT(tl, u_int32_t *, 2*NFSX_UNSIGNED); 3012 ncookie.lval[0] = 0; 3013 ncookie.lval[1] = *tl++; 3014 } 3015 if (bigenough) { 3016 if (nd->nd_flag & ND_NFSV4) { 3017 if (rderr) { 3018 dp->d_fileno = 0; 3019 } else { 3020 if (gotmnton) { 3021 if (nfsva.na_mntonfileno != 0xffffffff) 3022 dp->d_fileno = nfsva.na_mntonfileno; 3023 else 3024 dp->d_fileno = nfsva.na_fileid; 3025 } else if (nfsva.na_filesid[0] == 3026 dnp->n_vattr.na_filesid[0] && 3027 nfsva.na_filesid[1] == 3028 dnp->n_vattr.na_filesid[1]) { 3029 dp->d_fileno = nfsva.na_fileid; 3030 } else { 3031 do { 3032 fakefileno--; 3033 } while (fakefileno == 3034 nfsva.na_fileid); 3035 dp->d_fileno = fakefileno; 3036 } 3037 dp->d_type = vtonfs_dtype(nfsva.na_type); 3038 } 3039 } else { 3040 dp->d_fileno = nfsva.na_fileid; 3041 } 3042 *tl2++ = cookiep->nfsuquad[0] = cookie.lval[0] = 3043 ncookie.lval[0]; 3044 *tl2 = cookiep->nfsuquad[1] = cookie.lval[1] = 3045 ncookie.lval[1]; 3046 } 3047 more_dirs = fxdr_unsigned(int, *tl); 3048 } 3049 /* 3050 * If at end of rpc data, get the eof boolean 3051 */ 3052 if (!more_dirs) { 3053 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 3054 eof = fxdr_unsigned(int, *tl); 3055 if (tryformoredirs) 3056 more_dirs = !eof; 3057 if (nd->nd_flag & ND_NFSV4) { 3058 error = nfscl_postop_attr(nd, nap, attrflagp, 3059 stuff); 3060 if (error) 3061 goto nfsmout; 3062 } 3063 } 3064 mbuf_freem(nd->nd_mrep); 3065 nd->nd_mrep = NULL; 3066 } 3067 /* 3068 * Fill last record, iff any, out to a multiple of DIRBLKSIZ 3069 * by increasing d_reclen for the last record. 3070 */ 3071 if (blksiz > 0) { 3072 left = DIRBLKSIZ - blksiz; 3073 dp->d_reclen += left; 3074 uio_iov_base_add(uiop, left); 3075 uio_iov_len_add(uiop, -(left)); 3076 uio_uio_resid_add(uiop, -(left)); 3077 uiop->uio_offset += left; 3078 } 3079 3080 /* 3081 * If returning no data, assume end of file. 3082 * If not bigenough, return not end of file, since you aren't 3083 * returning all the data 3084 * Otherwise, return the eof flag from the server. 3085 */ 3086 if (eofp) { 3087 if (tresid == ((size_t)(uio_uio_resid(uiop)))) 3088 *eofp = 1; 3089 else if (!bigenough) 3090 *eofp = 0; 3091 else 3092 *eofp = eof; 3093 } 3094 3095 /* 3096 * Add extra empty records to any remaining DIRBLKSIZ chunks. 3097 */ 3098 while (uio_uio_resid(uiop) > 0 && ((size_t)(uio_uio_resid(uiop))) != tresid) { 3099 dp = (struct dirent *) CAST_DOWN(caddr_t, uio_iov_base(uiop)); 3100 dp->d_type = DT_UNKNOWN; 3101 dp->d_fileno = 0; 3102 dp->d_namlen = 0; 3103 dp->d_name[0] = '\0'; 3104 tl = (u_int32_t *)&dp->d_name[4]; 3105 *tl++ = cookie.lval[0]; 3106 *tl = cookie.lval[1]; 3107 dp->d_reclen = DIRBLKSIZ; 3108 uio_iov_base_add(uiop, DIRBLKSIZ); 3109 uio_iov_len_add(uiop, -(DIRBLKSIZ)); 3110 uio_uio_resid_add(uiop, -(DIRBLKSIZ)); 3111 uiop->uio_offset += DIRBLKSIZ; 3112 } 3113 3114 nfsmout: 3115 mbuf_freem(nd->nd_mrep); 3116 return (error); 3117 } 3118 3119 #ifndef APPLE 3120 /* 3121 * NFS V3 readdir plus RPC. Used in place of nfsrpc_readdir(). 3122 * (Also used for NFS V4 when mount flag set.) 3123 * (ditto above w.r.t. multiple of DIRBLKSIZ, etc.) 3124 */ 3125 APPLESTATIC int 3126 nfsrpc_readdirplus(vnode_t vp, struct uio *uiop, nfsuint64 *cookiep, 3127 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, 3128 int *eofp, void *stuff) 3129 { 3130 int len, left; 3131 struct dirent *dp = NULL; 3132 u_int32_t *tl; 3133 vnode_t newvp = NULLVP; 3134 struct nfsrv_descript nfsd, *nd = &nfsd; 3135 struct nameidata nami, *ndp = &nami; 3136 struct componentname *cnp = &ndp->ni_cnd; 3137 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 3138 struct nfsnode *dnp = VTONFS(vp), *np; 3139 struct nfsvattr nfsva; 3140 struct nfsfh *nfhp; 3141 nfsquad_t cookie, ncookie; 3142 int error = 0, tlen, more_dirs = 1, blksiz = 0, bigenough = 1; 3143 int attrflag, tryformoredirs = 1, eof = 0, gotmnton = 0; 3144 int isdotdot = 0, unlocknewvp = 0; 3145 long dotfileid, dotdotfileid = 0, fileno = 0; 3146 char *cp; 3147 nfsattrbit_t attrbits, dattrbits; 3148 size_t tresid; 3149 u_int32_t *tl2 = NULL, fakefileno = 0xffffffff, rderr; 3150 struct timespec dctime; 3151 3152 KASSERT(uiop->uio_iovcnt == 1 && 3153 (uio_uio_resid(uiop) & (DIRBLKSIZ - 1)) == 0, 3154 ("nfs readdirplusrpc bad uio")); 3155 timespecclear(&dctime); 3156 *attrflagp = 0; 3157 if (eofp != NULL) 3158 *eofp = 0; 3159 ndp->ni_dvp = vp; 3160 nd->nd_mrep = NULL; 3161 cookie.lval[0] = cookiep->nfsuquad[0]; 3162 cookie.lval[1] = cookiep->nfsuquad[1]; 3163 tresid = uio_uio_resid(uiop); 3164 3165 /* 3166 * For NFSv4, first create the "." and ".." entries. 3167 */ 3168 if (NFSHASNFSV4(nmp)) { 3169 NFSGETATTR_ATTRBIT(&dattrbits); 3170 NFSZERO_ATTRBIT(&attrbits); 3171 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_FILEID); 3172 if (NFSISSET_ATTRBIT(&dnp->n_vattr.na_suppattr, 3173 NFSATTRBIT_MOUNTEDONFILEID)) { 3174 NFSSETBIT_ATTRBIT(&attrbits, 3175 NFSATTRBIT_MOUNTEDONFILEID); 3176 gotmnton = 1; 3177 } else { 3178 /* 3179 * Must fake it. Use the fileno, except when the 3180 * fsid is != to that of the directory. For that 3181 * case, generate a fake fileno that is not the same. 3182 */ 3183 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_FSID); 3184 gotmnton = 0; 3185 } 3186 3187 /* 3188 * Joy, oh joy. For V4 we get to hand craft '.' and '..'. 3189 */ 3190 if (uiop->uio_offset == 0) { 3191 NFSCL_REQSTART(nd, NFSPROC_LOOKUPP, vp); 3192 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 3193 *tl++ = txdr_unsigned(NFSV4OP_GETFH); 3194 *tl = txdr_unsigned(NFSV4OP_GETATTR); 3195 (void) nfsrv_putattrbit(nd, &attrbits); 3196 error = nfscl_request(nd, vp, p, cred, stuff); 3197 if (error) 3198 return (error); 3199 dotfileid = 0; /* Fake out the compiler. */ 3200 if ((nd->nd_flag & ND_NOMOREDATA) == 0) { 3201 error = nfsm_loadattr(nd, &nfsva); 3202 if (error != 0) 3203 goto nfsmout; 3204 dctime = nfsva.na_ctime; 3205 dotfileid = nfsva.na_fileid; 3206 } 3207 if (nd->nd_repstat == 0) { 3208 NFSM_DISSECT(tl, u_int32_t *, 5 * NFSX_UNSIGNED); 3209 len = fxdr_unsigned(int, *(tl + 4)); 3210 if (len > 0 && len <= NFSX_V4FHMAX) 3211 error = nfsm_advance(nd, NFSM_RNDUP(len), -1); 3212 else 3213 error = EPERM; 3214 if (!error) { 3215 NFSM_DISSECT(tl, u_int32_t *, 2*NFSX_UNSIGNED); 3216 nfsva.na_mntonfileno = 0xffffffff; 3217 error = nfsv4_loadattr(nd, NULL, &nfsva, NULL, 3218 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0, 3219 NULL, NULL, NULL, p, cred); 3220 if (error) { 3221 dotdotfileid = dotfileid; 3222 } else if (gotmnton) { 3223 if (nfsva.na_mntonfileno != 0xffffffff) 3224 dotdotfileid = nfsva.na_mntonfileno; 3225 else 3226 dotdotfileid = nfsva.na_fileid; 3227 } else if (nfsva.na_filesid[0] == 3228 dnp->n_vattr.na_filesid[0] && 3229 nfsva.na_filesid[1] == 3230 dnp->n_vattr.na_filesid[1]) { 3231 dotdotfileid = nfsva.na_fileid; 3232 } else { 3233 do { 3234 fakefileno--; 3235 } while (fakefileno == 3236 nfsva.na_fileid); 3237 dotdotfileid = fakefileno; 3238 } 3239 } 3240 } else if (nd->nd_repstat == NFSERR_NOENT) { 3241 /* 3242 * Lookupp returns NFSERR_NOENT when we are 3243 * at the root, so just use the current dir. 3244 */ 3245 nd->nd_repstat = 0; 3246 dotdotfileid = dotfileid; 3247 } else { 3248 error = nd->nd_repstat; 3249 } 3250 mbuf_freem(nd->nd_mrep); 3251 if (error) 3252 return (error); 3253 nd->nd_mrep = NULL; 3254 dp = (struct dirent *)uio_iov_base(uiop); 3255 dp->d_type = DT_DIR; 3256 dp->d_fileno = dotfileid; 3257 dp->d_namlen = 1; 3258 dp->d_name[0] = '.'; 3259 dp->d_name[1] = '\0'; 3260 dp->d_reclen = DIRENT_SIZE(dp) + NFSX_HYPER; 3261 /* 3262 * Just make these offset cookie 0. 3263 */ 3264 tl = (u_int32_t *)&dp->d_name[4]; 3265 *tl++ = 0; 3266 *tl = 0; 3267 blksiz += dp->d_reclen; 3268 uio_uio_resid_add(uiop, -(dp->d_reclen)); 3269 uiop->uio_offset += dp->d_reclen; 3270 uio_iov_base_add(uiop, dp->d_reclen); 3271 uio_iov_len_add(uiop, -(dp->d_reclen)); 3272 dp = (struct dirent *)uio_iov_base(uiop); 3273 dp->d_type = DT_DIR; 3274 dp->d_fileno = dotdotfileid; 3275 dp->d_namlen = 2; 3276 dp->d_name[0] = '.'; 3277 dp->d_name[1] = '.'; 3278 dp->d_name[2] = '\0'; 3279 dp->d_reclen = DIRENT_SIZE(dp) + NFSX_HYPER; 3280 /* 3281 * Just make these offset cookie 0. 3282 */ 3283 tl = (u_int32_t *)&dp->d_name[4]; 3284 *tl++ = 0; 3285 *tl = 0; 3286 blksiz += dp->d_reclen; 3287 uio_uio_resid_add(uiop, -(dp->d_reclen)); 3288 uiop->uio_offset += dp->d_reclen; 3289 uio_iov_base_add(uiop, dp->d_reclen); 3290 uio_iov_len_add(uiop, -(dp->d_reclen)); 3291 } 3292 NFSREADDIRPLUS_ATTRBIT(&attrbits); 3293 if (gotmnton) 3294 NFSSETBIT_ATTRBIT(&attrbits, 3295 NFSATTRBIT_MOUNTEDONFILEID); 3296 } 3297 3298 /* 3299 * Loop around doing readdir rpc's of size nm_readdirsize. 3300 * The stopping criteria is EOF or buffer full. 3301 */ 3302 while (more_dirs && bigenough) { 3303 *attrflagp = 0; 3304 NFSCL_REQSTART(nd, NFSPROC_READDIRPLUS, vp); 3305 NFSM_BUILD(tl, u_int32_t *, 6 * NFSX_UNSIGNED); 3306 *tl++ = cookie.lval[0]; 3307 *tl++ = cookie.lval[1]; 3308 if (cookie.qval == 0) { 3309 *tl++ = 0; 3310 *tl++ = 0; 3311 } else { 3312 NFSLOCKNODE(dnp); 3313 *tl++ = dnp->n_cookieverf.nfsuquad[0]; 3314 *tl++ = dnp->n_cookieverf.nfsuquad[1]; 3315 NFSUNLOCKNODE(dnp); 3316 } 3317 *tl++ = txdr_unsigned(nmp->nm_readdirsize); 3318 *tl = txdr_unsigned(nmp->nm_readdirsize); 3319 if (nd->nd_flag & ND_NFSV4) { 3320 (void) nfsrv_putattrbit(nd, &attrbits); 3321 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 3322 *tl = txdr_unsigned(NFSV4OP_GETATTR); 3323 (void) nfsrv_putattrbit(nd, &dattrbits); 3324 } 3325 error = nfscl_request(nd, vp, p, cred, stuff); 3326 if (error) 3327 return (error); 3328 if (nd->nd_flag & ND_NFSV3) 3329 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 3330 if (nd->nd_repstat || error) { 3331 if (!error) 3332 error = nd->nd_repstat; 3333 goto nfsmout; 3334 } 3335 if ((nd->nd_flag & ND_NFSV3) != 0 && *attrflagp != 0) 3336 dctime = nap->na_ctime; 3337 NFSM_DISSECT(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 3338 NFSLOCKNODE(dnp); 3339 dnp->n_cookieverf.nfsuquad[0] = *tl++; 3340 dnp->n_cookieverf.nfsuquad[1] = *tl++; 3341 NFSUNLOCKNODE(dnp); 3342 more_dirs = fxdr_unsigned(int, *tl); 3343 if (!more_dirs) 3344 tryformoredirs = 0; 3345 3346 /* loop through the dir entries, doctoring them to 4bsd form */ 3347 while (more_dirs && bigenough) { 3348 NFSM_DISSECT(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 3349 if (nd->nd_flag & ND_NFSV4) { 3350 ncookie.lval[0] = *tl++; 3351 ncookie.lval[1] = *tl++; 3352 } else { 3353 fileno = fxdr_unsigned(long, *++tl); 3354 tl++; 3355 } 3356 len = fxdr_unsigned(int, *tl); 3357 if (len <= 0 || len > NFS_MAXNAMLEN) { 3358 error = EBADRPC; 3359 goto nfsmout; 3360 } 3361 tlen = NFSM_RNDUP(len); 3362 if (tlen == len) 3363 tlen += 4; /* To ensure null termination */ 3364 left = DIRBLKSIZ - blksiz; 3365 if ((tlen + DIRHDSIZ + NFSX_HYPER) > left) { 3366 dp->d_reclen += left; 3367 uio_iov_base_add(uiop, left); 3368 uio_iov_len_add(uiop, -(left)); 3369 uio_uio_resid_add(uiop, -(left)); 3370 uiop->uio_offset += left; 3371 blksiz = 0; 3372 } 3373 if ((tlen + DIRHDSIZ + NFSX_HYPER) > uio_uio_resid(uiop)) 3374 bigenough = 0; 3375 if (bigenough) { 3376 dp = (struct dirent *)uio_iov_base(uiop); 3377 dp->d_namlen = len; 3378 dp->d_reclen = tlen + DIRHDSIZ + NFSX_HYPER; 3379 dp->d_type = DT_UNKNOWN; 3380 blksiz += dp->d_reclen; 3381 if (blksiz == DIRBLKSIZ) 3382 blksiz = 0; 3383 uio_uio_resid_add(uiop, -(DIRHDSIZ)); 3384 uiop->uio_offset += DIRHDSIZ; 3385 uio_iov_base_add(uiop, DIRHDSIZ); 3386 uio_iov_len_add(uiop, -(DIRHDSIZ)); 3387 cnp->cn_nameptr = uio_iov_base(uiop); 3388 cnp->cn_namelen = len; 3389 NFSCNHASHZERO(cnp); 3390 error = nfsm_mbufuio(nd, uiop, len); 3391 if (error) 3392 goto nfsmout; 3393 cp = uio_iov_base(uiop); 3394 tlen -= len; 3395 *cp = '\0'; 3396 cp += tlen; /* points to cookie storage */ 3397 tl2 = (u_int32_t *)cp; 3398 if (len == 2 && cnp->cn_nameptr[0] == '.' && 3399 cnp->cn_nameptr[1] == '.') 3400 isdotdot = 1; 3401 else 3402 isdotdot = 0; 3403 uio_iov_base_add(uiop, (tlen + NFSX_HYPER)); 3404 uio_iov_len_add(uiop, -(tlen + NFSX_HYPER)); 3405 uio_uio_resid_add(uiop, -(tlen + NFSX_HYPER)); 3406 uiop->uio_offset += (tlen + NFSX_HYPER); 3407 } else { 3408 error = nfsm_advance(nd, NFSM_RNDUP(len), -1); 3409 if (error) 3410 goto nfsmout; 3411 } 3412 nfhp = NULL; 3413 if (nd->nd_flag & ND_NFSV3) { 3414 NFSM_DISSECT(tl, u_int32_t *, 3*NFSX_UNSIGNED); 3415 ncookie.lval[0] = *tl++; 3416 ncookie.lval[1] = *tl++; 3417 attrflag = fxdr_unsigned(int, *tl); 3418 if (attrflag) { 3419 error = nfsm_loadattr(nd, &nfsva); 3420 if (error) 3421 goto nfsmout; 3422 } 3423 NFSM_DISSECT(tl,u_int32_t *,NFSX_UNSIGNED); 3424 if (*tl) { 3425 error = nfsm_getfh(nd, &nfhp); 3426 if (error) 3427 goto nfsmout; 3428 } 3429 if (!attrflag && nfhp != NULL) { 3430 FREE((caddr_t)nfhp, M_NFSFH); 3431 nfhp = NULL; 3432 } 3433 } else { 3434 rderr = 0; 3435 nfsva.na_mntonfileno = 0xffffffff; 3436 error = nfsv4_loadattr(nd, NULL, &nfsva, &nfhp, 3437 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0, 3438 NULL, NULL, &rderr, p, cred); 3439 if (error) 3440 goto nfsmout; 3441 } 3442 3443 if (bigenough) { 3444 if (nd->nd_flag & ND_NFSV4) { 3445 if (rderr) { 3446 dp->d_fileno = 0; 3447 } else if (gotmnton) { 3448 if (nfsva.na_mntonfileno != 0xffffffff) 3449 dp->d_fileno = nfsva.na_mntonfileno; 3450 else 3451 dp->d_fileno = nfsva.na_fileid; 3452 } else if (nfsva.na_filesid[0] == 3453 dnp->n_vattr.na_filesid[0] && 3454 nfsva.na_filesid[1] == 3455 dnp->n_vattr.na_filesid[1]) { 3456 dp->d_fileno = nfsva.na_fileid; 3457 } else { 3458 do { 3459 fakefileno--; 3460 } while (fakefileno == 3461 nfsva.na_fileid); 3462 dp->d_fileno = fakefileno; 3463 } 3464 } else { 3465 dp->d_fileno = fileno; 3466 } 3467 *tl2++ = cookiep->nfsuquad[0] = cookie.lval[0] = 3468 ncookie.lval[0]; 3469 *tl2 = cookiep->nfsuquad[1] = cookie.lval[1] = 3470 ncookie.lval[1]; 3471 3472 if (nfhp != NULL) { 3473 if (NFSRV_CMPFH(nfhp->nfh_fh, nfhp->nfh_len, 3474 dnp->n_fhp->nfh_fh, dnp->n_fhp->nfh_len)) { 3475 VREF(vp); 3476 newvp = vp; 3477 unlocknewvp = 0; 3478 FREE((caddr_t)nfhp, M_NFSFH); 3479 np = dnp; 3480 } else if (isdotdot != 0) { 3481 /* 3482 * Skip doing a nfscl_nget() call for "..". 3483 * There's a race between acquiring the nfs 3484 * node here and lookups that look for the 3485 * directory being read (in the parent). 3486 * It would try to get a lock on ".." here, 3487 * owning the lock on the directory being 3488 * read. Lookup will hold the lock on ".." 3489 * and try to acquire the lock on the 3490 * directory being read. 3491 * If the directory is unlocked/relocked, 3492 * then there is a LOR with the buflock 3493 * vp is relocked. 3494 */ 3495 free(nfhp, M_NFSFH); 3496 } else { 3497 error = nfscl_nget(vnode_mount(vp), vp, 3498 nfhp, cnp, p, &np, NULL, LK_EXCLUSIVE); 3499 if (!error) { 3500 newvp = NFSTOV(np); 3501 unlocknewvp = 1; 3502 } 3503 } 3504 nfhp = NULL; 3505 if (newvp != NULLVP) { 3506 error = nfscl_loadattrcache(&newvp, 3507 &nfsva, NULL, NULL, 0, 0); 3508 if (error) { 3509 if (unlocknewvp) 3510 vput(newvp); 3511 else 3512 vrele(newvp); 3513 goto nfsmout; 3514 } 3515 dp->d_type = 3516 vtonfs_dtype(np->n_vattr.na_type); 3517 ndp->ni_vp = newvp; 3518 NFSCNHASH(cnp, HASHINIT); 3519 if (cnp->cn_namelen <= NCHNAMLEN && 3520 (newvp->v_type != VDIR || 3521 dctime.tv_sec != 0)) { 3522 cache_enter_time(ndp->ni_dvp, 3523 ndp->ni_vp, cnp, 3524 &nfsva.na_ctime, 3525 newvp->v_type != VDIR ? NULL : 3526 &dctime); 3527 } 3528 if (unlocknewvp) 3529 vput(newvp); 3530 else 3531 vrele(newvp); 3532 newvp = NULLVP; 3533 } 3534 } 3535 } else if (nfhp != NULL) { 3536 FREE((caddr_t)nfhp, M_NFSFH); 3537 } 3538 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 3539 more_dirs = fxdr_unsigned(int, *tl); 3540 } 3541 /* 3542 * If at end of rpc data, get the eof boolean 3543 */ 3544 if (!more_dirs) { 3545 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 3546 eof = fxdr_unsigned(int, *tl); 3547 if (tryformoredirs) 3548 more_dirs = !eof; 3549 if (nd->nd_flag & ND_NFSV4) { 3550 error = nfscl_postop_attr(nd, nap, attrflagp, 3551 stuff); 3552 if (error) 3553 goto nfsmout; 3554 } 3555 } 3556 mbuf_freem(nd->nd_mrep); 3557 nd->nd_mrep = NULL; 3558 } 3559 /* 3560 * Fill last record, iff any, out to a multiple of DIRBLKSIZ 3561 * by increasing d_reclen for the last record. 3562 */ 3563 if (blksiz > 0) { 3564 left = DIRBLKSIZ - blksiz; 3565 dp->d_reclen += left; 3566 uio_iov_base_add(uiop, left); 3567 uio_iov_len_add(uiop, -(left)); 3568 uio_uio_resid_add(uiop, -(left)); 3569 uiop->uio_offset += left; 3570 } 3571 3572 /* 3573 * If returning no data, assume end of file. 3574 * If not bigenough, return not end of file, since you aren't 3575 * returning all the data 3576 * Otherwise, return the eof flag from the server. 3577 */ 3578 if (eofp != NULL) { 3579 if (tresid == uio_uio_resid(uiop)) 3580 *eofp = 1; 3581 else if (!bigenough) 3582 *eofp = 0; 3583 else 3584 *eofp = eof; 3585 } 3586 3587 /* 3588 * Add extra empty records to any remaining DIRBLKSIZ chunks. 3589 */ 3590 while (uio_uio_resid(uiop) > 0 && uio_uio_resid(uiop) != tresid) { 3591 dp = (struct dirent *)uio_iov_base(uiop); 3592 dp->d_type = DT_UNKNOWN; 3593 dp->d_fileno = 0; 3594 dp->d_namlen = 0; 3595 dp->d_name[0] = '\0'; 3596 tl = (u_int32_t *)&dp->d_name[4]; 3597 *tl++ = cookie.lval[0]; 3598 *tl = cookie.lval[1]; 3599 dp->d_reclen = DIRBLKSIZ; 3600 uio_iov_base_add(uiop, DIRBLKSIZ); 3601 uio_iov_len_add(uiop, -(DIRBLKSIZ)); 3602 uio_uio_resid_add(uiop, -(DIRBLKSIZ)); 3603 uiop->uio_offset += DIRBLKSIZ; 3604 } 3605 3606 nfsmout: 3607 mbuf_freem(nd->nd_mrep); 3608 return (error); 3609 } 3610 #endif /* !APPLE */ 3611 3612 /* 3613 * Nfs commit rpc 3614 */ 3615 APPLESTATIC int 3616 nfsrpc_commit(vnode_t vp, u_quad_t offset, int cnt, struct ucred *cred, 3617 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff) 3618 { 3619 u_int32_t *tl; 3620 struct nfsrv_descript nfsd, *nd = &nfsd; 3621 nfsattrbit_t attrbits; 3622 int error; 3623 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 3624 3625 *attrflagp = 0; 3626 NFSCL_REQSTART(nd, NFSPROC_COMMIT, vp); 3627 NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 3628 txdr_hyper(offset, tl); 3629 tl += 2; 3630 *tl = txdr_unsigned(cnt); 3631 if (nd->nd_flag & ND_NFSV4) { 3632 /* 3633 * And do a Getattr op. 3634 */ 3635 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 3636 *tl = txdr_unsigned(NFSV4OP_GETATTR); 3637 NFSGETATTR_ATTRBIT(&attrbits); 3638 (void) nfsrv_putattrbit(nd, &attrbits); 3639 } 3640 error = nfscl_request(nd, vp, p, cred, stuff); 3641 if (error) 3642 return (error); 3643 error = nfscl_wcc_data(nd, vp, nap, attrflagp, NULL, stuff); 3644 if (!error && !nd->nd_repstat) { 3645 NFSM_DISSECT(tl, u_int32_t *, NFSX_VERF); 3646 NFSLOCKMNT(nmp); 3647 if (NFSBCMP(nmp->nm_verf, tl, NFSX_VERF)) { 3648 NFSBCOPY(tl, nmp->nm_verf, NFSX_VERF); 3649 nd->nd_repstat = NFSERR_STALEWRITEVERF; 3650 } 3651 NFSUNLOCKMNT(nmp); 3652 if (nd->nd_flag & ND_NFSV4) 3653 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 3654 } 3655 nfsmout: 3656 if (!error && nd->nd_repstat) 3657 error = nd->nd_repstat; 3658 mbuf_freem(nd->nd_mrep); 3659 return (error); 3660 } 3661 3662 /* 3663 * NFS byte range lock rpc. 3664 * (Mostly just calls one of the three lower level RPC routines.) 3665 */ 3666 APPLESTATIC int 3667 nfsrpc_advlock(vnode_t vp, off_t size, int op, struct flock *fl, 3668 int reclaim, struct ucred *cred, NFSPROC_T *p, void *id, int flags) 3669 { 3670 struct nfscllockowner *lp; 3671 struct nfsclclient *clp; 3672 struct nfsfh *nfhp; 3673 struct nfsrv_descript nfsd, *nd = &nfsd; 3674 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 3675 u_int64_t off, len; 3676 off_t start, end; 3677 u_int32_t clidrev = 0; 3678 int error = 0, newone = 0, expireret = 0, retrycnt, donelocally; 3679 int callcnt, dorpc; 3680 3681 /* 3682 * Convert the flock structure into a start and end and do POSIX 3683 * bounds checking. 3684 */ 3685 switch (fl->l_whence) { 3686 case SEEK_SET: 3687 case SEEK_CUR: 3688 /* 3689 * Caller is responsible for adding any necessary offset 3690 * when SEEK_CUR is used. 3691 */ 3692 start = fl->l_start; 3693 off = fl->l_start; 3694 break; 3695 case SEEK_END: 3696 start = size + fl->l_start; 3697 off = size + fl->l_start; 3698 break; 3699 default: 3700 return (EINVAL); 3701 } 3702 if (start < 0) 3703 return (EINVAL); 3704 if (fl->l_len != 0) { 3705 end = start + fl->l_len - 1; 3706 if (end < start) 3707 return (EINVAL); 3708 } 3709 3710 len = fl->l_len; 3711 if (len == 0) 3712 len = NFS64BITSSET; 3713 retrycnt = 0; 3714 do { 3715 nd->nd_repstat = 0; 3716 if (op == F_GETLK) { 3717 error = nfscl_getcl(vnode_mount(vp), cred, p, 1, &clp); 3718 if (error) 3719 return (error); 3720 error = nfscl_lockt(vp, clp, off, len, fl, p, id, flags); 3721 if (!error) { 3722 clidrev = clp->nfsc_clientidrev; 3723 error = nfsrpc_lockt(nd, vp, clp, off, len, fl, cred, 3724 p, id, flags); 3725 } else if (error == -1) { 3726 error = 0; 3727 } 3728 nfscl_clientrelease(clp); 3729 } else if (op == F_UNLCK && fl->l_type == F_UNLCK) { 3730 /* 3731 * We must loop around for all lockowner cases. 3732 */ 3733 callcnt = 0; 3734 error = nfscl_getcl(vnode_mount(vp), cred, p, 1, &clp); 3735 if (error) 3736 return (error); 3737 do { 3738 error = nfscl_relbytelock(vp, off, len, cred, p, callcnt, 3739 clp, id, flags, &lp, &dorpc); 3740 /* 3741 * If it returns a NULL lp, we're done. 3742 */ 3743 if (lp == NULL) { 3744 if (callcnt == 0) 3745 nfscl_clientrelease(clp); 3746 else 3747 nfscl_releasealllocks(clp, vp, p, id, flags); 3748 return (error); 3749 } 3750 if (nmp->nm_clp != NULL) 3751 clidrev = nmp->nm_clp->nfsc_clientidrev; 3752 else 3753 clidrev = 0; 3754 /* 3755 * If the server doesn't support Posix lock semantics, 3756 * only allow locks on the entire file, since it won't 3757 * handle overlapping byte ranges. 3758 * There might still be a problem when a lock 3759 * upgrade/downgrade (read<->write) occurs, since the 3760 * server "might" expect an unlock first? 3761 */ 3762 if (dorpc && (lp->nfsl_open->nfso_posixlock || 3763 (off == 0 && len == NFS64BITSSET))) { 3764 /* 3765 * Since the lock records will go away, we must 3766 * wait for grace and delay here. 3767 */ 3768 do { 3769 error = nfsrpc_locku(nd, nmp, lp, off, len, 3770 NFSV4LOCKT_READ, cred, p, 0); 3771 if ((nd->nd_repstat == NFSERR_GRACE || 3772 nd->nd_repstat == NFSERR_DELAY) && 3773 error == 0) 3774 (void) nfs_catnap(PZERO, (int)nd->nd_repstat, 3775 "nfs_advlock"); 3776 } while ((nd->nd_repstat == NFSERR_GRACE || 3777 nd->nd_repstat == NFSERR_DELAY) && error == 0); 3778 } 3779 callcnt++; 3780 } while (error == 0 && nd->nd_repstat == 0); 3781 nfscl_releasealllocks(clp, vp, p, id, flags); 3782 } else if (op == F_SETLK) { 3783 error = nfscl_getbytelock(vp, off, len, fl->l_type, cred, p, 3784 NULL, 0, id, flags, NULL, NULL, &lp, &newone, &donelocally); 3785 if (error || donelocally) { 3786 return (error); 3787 } 3788 if (nmp->nm_clp != NULL) 3789 clidrev = nmp->nm_clp->nfsc_clientidrev; 3790 else 3791 clidrev = 0; 3792 nfhp = VTONFS(vp)->n_fhp; 3793 if (!lp->nfsl_open->nfso_posixlock && 3794 (off != 0 || len != NFS64BITSSET)) { 3795 error = EINVAL; 3796 } else { 3797 error = nfsrpc_lock(nd, nmp, vp, nfhp->nfh_fh, 3798 nfhp->nfh_len, lp, newone, reclaim, off, 3799 len, fl->l_type, cred, p, 0); 3800 } 3801 if (!error) 3802 error = nd->nd_repstat; 3803 nfscl_lockrelease(lp, error, newone); 3804 } else { 3805 error = EINVAL; 3806 } 3807 if (!error) 3808 error = nd->nd_repstat; 3809 if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 3810 error == NFSERR_STALEDONTRECOVER || 3811 error == NFSERR_STALECLIENTID || error == NFSERR_DELAY || 3812 error == NFSERR_BADSESSION) { 3813 (void) nfs_catnap(PZERO, error, "nfs_advlock"); 3814 } else if ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) 3815 && clidrev != 0) { 3816 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p); 3817 retrycnt++; 3818 } 3819 } while (error == NFSERR_GRACE || 3820 error == NFSERR_STALECLIENTID || error == NFSERR_DELAY || 3821 error == NFSERR_STALEDONTRECOVER || error == NFSERR_STALESTATEID || 3822 error == NFSERR_BADSESSION || 3823 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) && 3824 expireret == 0 && clidrev != 0 && retrycnt < 4)); 3825 if (error && retrycnt >= 4) 3826 error = EIO; 3827 return (error); 3828 } 3829 3830 /* 3831 * The lower level routine for the LockT case. 3832 */ 3833 APPLESTATIC int 3834 nfsrpc_lockt(struct nfsrv_descript *nd, vnode_t vp, 3835 struct nfsclclient *clp, u_int64_t off, u_int64_t len, struct flock *fl, 3836 struct ucred *cred, NFSPROC_T *p, void *id, int flags) 3837 { 3838 u_int32_t *tl; 3839 int error, type, size; 3840 uint8_t own[NFSV4CL_LOCKNAMELEN + NFSX_V4FHMAX]; 3841 struct nfsnode *np; 3842 struct nfsmount *nmp; 3843 3844 nmp = VFSTONFS(vp->v_mount); 3845 NFSCL_REQSTART(nd, NFSPROC_LOCKT, vp); 3846 NFSM_BUILD(tl, u_int32_t *, 7 * NFSX_UNSIGNED); 3847 if (fl->l_type == F_RDLCK) 3848 *tl++ = txdr_unsigned(NFSV4LOCKT_READ); 3849 else 3850 *tl++ = txdr_unsigned(NFSV4LOCKT_WRITE); 3851 txdr_hyper(off, tl); 3852 tl += 2; 3853 txdr_hyper(len, tl); 3854 tl += 2; 3855 *tl++ = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[0]; 3856 *tl = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[1]; 3857 nfscl_filllockowner(id, own, flags); 3858 np = VTONFS(vp); 3859 NFSBCOPY(np->n_fhp->nfh_fh, &own[NFSV4CL_LOCKNAMELEN], 3860 np->n_fhp->nfh_len); 3861 (void)nfsm_strtom(nd, own, NFSV4CL_LOCKNAMELEN + np->n_fhp->nfh_len); 3862 error = nfscl_request(nd, vp, p, cred, NULL); 3863 if (error) 3864 return (error); 3865 if (nd->nd_repstat == 0) { 3866 fl->l_type = F_UNLCK; 3867 } else if (nd->nd_repstat == NFSERR_DENIED) { 3868 nd->nd_repstat = 0; 3869 fl->l_whence = SEEK_SET; 3870 NFSM_DISSECT(tl, u_int32_t *, 8 * NFSX_UNSIGNED); 3871 fl->l_start = fxdr_hyper(tl); 3872 tl += 2; 3873 len = fxdr_hyper(tl); 3874 tl += 2; 3875 if (len == NFS64BITSSET) 3876 fl->l_len = 0; 3877 else 3878 fl->l_len = len; 3879 type = fxdr_unsigned(int, *tl++); 3880 if (type == NFSV4LOCKT_WRITE) 3881 fl->l_type = F_WRLCK; 3882 else 3883 fl->l_type = F_RDLCK; 3884 /* 3885 * XXX For now, I have no idea what to do with the 3886 * conflicting lock_owner, so I'll just set the pid == 0 3887 * and skip over the lock_owner. 3888 */ 3889 fl->l_pid = (pid_t)0; 3890 tl += 2; 3891 size = fxdr_unsigned(int, *tl); 3892 if (size < 0 || size > NFSV4_OPAQUELIMIT) 3893 error = EBADRPC; 3894 if (!error) 3895 error = nfsm_advance(nd, NFSM_RNDUP(size), -1); 3896 } else if (nd->nd_repstat == NFSERR_STALECLIENTID || 3897 nd->nd_repstat == NFSERR_BADSESSION) 3898 nfscl_initiate_recovery(clp); 3899 nfsmout: 3900 mbuf_freem(nd->nd_mrep); 3901 return (error); 3902 } 3903 3904 /* 3905 * Lower level function that performs the LockU RPC. 3906 */ 3907 static int 3908 nfsrpc_locku(struct nfsrv_descript *nd, struct nfsmount *nmp, 3909 struct nfscllockowner *lp, u_int64_t off, u_int64_t len, 3910 u_int32_t type, struct ucred *cred, NFSPROC_T *p, int syscred) 3911 { 3912 u_int32_t *tl; 3913 int error; 3914 3915 nfscl_reqstart(nd, NFSPROC_LOCKU, nmp, lp->nfsl_open->nfso_fh, 3916 lp->nfsl_open->nfso_fhlen, NULL, NULL); 3917 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID + 6 * NFSX_UNSIGNED); 3918 *tl++ = txdr_unsigned(type); 3919 *tl = txdr_unsigned(lp->nfsl_seqid); 3920 if (nfstest_outofseq && 3921 (arc4random() % nfstest_outofseq) == 0) 3922 *tl = txdr_unsigned(lp->nfsl_seqid + 1); 3923 tl++; 3924 if (NFSHASNFSV4N(nmp)) 3925 *tl++ = 0; 3926 else 3927 *tl++ = lp->nfsl_stateid.seqid; 3928 *tl++ = lp->nfsl_stateid.other[0]; 3929 *tl++ = lp->nfsl_stateid.other[1]; 3930 *tl++ = lp->nfsl_stateid.other[2]; 3931 txdr_hyper(off, tl); 3932 tl += 2; 3933 txdr_hyper(len, tl); 3934 if (syscred) 3935 nd->nd_flag |= ND_USEGSSNAME; 3936 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 3937 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 3938 NFSCL_INCRSEQID(lp->nfsl_seqid, nd); 3939 if (error) 3940 return (error); 3941 if (nd->nd_repstat == 0) { 3942 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID); 3943 lp->nfsl_stateid.seqid = *tl++; 3944 lp->nfsl_stateid.other[0] = *tl++; 3945 lp->nfsl_stateid.other[1] = *tl++; 3946 lp->nfsl_stateid.other[2] = *tl; 3947 } else if (nd->nd_repstat == NFSERR_STALESTATEID || 3948 nd->nd_repstat == NFSERR_BADSESSION) 3949 nfscl_initiate_recovery(lp->nfsl_open->nfso_own->nfsow_clp); 3950 nfsmout: 3951 mbuf_freem(nd->nd_mrep); 3952 return (error); 3953 } 3954 3955 /* 3956 * The actual Lock RPC. 3957 */ 3958 APPLESTATIC int 3959 nfsrpc_lock(struct nfsrv_descript *nd, struct nfsmount *nmp, vnode_t vp, 3960 u_int8_t *nfhp, int fhlen, struct nfscllockowner *lp, int newone, 3961 int reclaim, u_int64_t off, u_int64_t len, short type, struct ucred *cred, 3962 NFSPROC_T *p, int syscred) 3963 { 3964 u_int32_t *tl; 3965 int error, size; 3966 uint8_t own[NFSV4CL_LOCKNAMELEN + NFSX_V4FHMAX]; 3967 3968 nfscl_reqstart(nd, NFSPROC_LOCK, nmp, nfhp, fhlen, NULL, NULL); 3969 NFSM_BUILD(tl, u_int32_t *, 7 * NFSX_UNSIGNED); 3970 if (type == F_RDLCK) 3971 *tl++ = txdr_unsigned(NFSV4LOCKT_READ); 3972 else 3973 *tl++ = txdr_unsigned(NFSV4LOCKT_WRITE); 3974 *tl++ = txdr_unsigned(reclaim); 3975 txdr_hyper(off, tl); 3976 tl += 2; 3977 txdr_hyper(len, tl); 3978 tl += 2; 3979 if (newone) { 3980 *tl = newnfs_true; 3981 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID + 3982 2 * NFSX_UNSIGNED + NFSX_HYPER); 3983 *tl++ = txdr_unsigned(lp->nfsl_open->nfso_own->nfsow_seqid); 3984 if (NFSHASNFSV4N(nmp)) 3985 *tl++ = 0; 3986 else 3987 *tl++ = lp->nfsl_open->nfso_stateid.seqid; 3988 *tl++ = lp->nfsl_open->nfso_stateid.other[0]; 3989 *tl++ = lp->nfsl_open->nfso_stateid.other[1]; 3990 *tl++ = lp->nfsl_open->nfso_stateid.other[2]; 3991 *tl++ = txdr_unsigned(lp->nfsl_seqid); 3992 *tl++ = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[0]; 3993 *tl = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[1]; 3994 NFSBCOPY(lp->nfsl_owner, own, NFSV4CL_LOCKNAMELEN); 3995 NFSBCOPY(nfhp, &own[NFSV4CL_LOCKNAMELEN], fhlen); 3996 (void)nfsm_strtom(nd, own, NFSV4CL_LOCKNAMELEN + fhlen); 3997 } else { 3998 *tl = newnfs_false; 3999 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID + NFSX_UNSIGNED); 4000 if (NFSHASNFSV4N(nmp)) 4001 *tl++ = 0; 4002 else 4003 *tl++ = lp->nfsl_stateid.seqid; 4004 *tl++ = lp->nfsl_stateid.other[0]; 4005 *tl++ = lp->nfsl_stateid.other[1]; 4006 *tl++ = lp->nfsl_stateid.other[2]; 4007 *tl = txdr_unsigned(lp->nfsl_seqid); 4008 if (nfstest_outofseq && 4009 (arc4random() % nfstest_outofseq) == 0) 4010 *tl = txdr_unsigned(lp->nfsl_seqid + 1); 4011 } 4012 if (syscred) 4013 nd->nd_flag |= ND_USEGSSNAME; 4014 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, vp, p, cred, 4015 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4016 if (error) 4017 return (error); 4018 if (newone) 4019 NFSCL_INCRSEQID(lp->nfsl_open->nfso_own->nfsow_seqid, nd); 4020 NFSCL_INCRSEQID(lp->nfsl_seqid, nd); 4021 if (nd->nd_repstat == 0) { 4022 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID); 4023 lp->nfsl_stateid.seqid = *tl++; 4024 lp->nfsl_stateid.other[0] = *tl++; 4025 lp->nfsl_stateid.other[1] = *tl++; 4026 lp->nfsl_stateid.other[2] = *tl; 4027 } else if (nd->nd_repstat == NFSERR_DENIED) { 4028 NFSM_DISSECT(tl, u_int32_t *, 8 * NFSX_UNSIGNED); 4029 size = fxdr_unsigned(int, *(tl + 7)); 4030 if (size < 0 || size > NFSV4_OPAQUELIMIT) 4031 error = EBADRPC; 4032 if (!error) 4033 error = nfsm_advance(nd, NFSM_RNDUP(size), -1); 4034 } else if (nd->nd_repstat == NFSERR_STALESTATEID || 4035 nd->nd_repstat == NFSERR_BADSESSION) 4036 nfscl_initiate_recovery(lp->nfsl_open->nfso_own->nfsow_clp); 4037 nfsmout: 4038 mbuf_freem(nd->nd_mrep); 4039 return (error); 4040 } 4041 4042 /* 4043 * nfs statfs rpc 4044 * (always called with the vp for the mount point) 4045 */ 4046 APPLESTATIC int 4047 nfsrpc_statfs(vnode_t vp, struct nfsstatfs *sbp, struct nfsfsinfo *fsp, 4048 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, 4049 void *stuff) 4050 { 4051 u_int32_t *tl = NULL; 4052 struct nfsrv_descript nfsd, *nd = &nfsd; 4053 struct nfsmount *nmp; 4054 nfsattrbit_t attrbits; 4055 int error; 4056 4057 *attrflagp = 0; 4058 nmp = VFSTONFS(vnode_mount(vp)); 4059 if (NFSHASNFSV4(nmp)) { 4060 /* 4061 * For V4, you actually do a getattr. 4062 */ 4063 NFSCL_REQSTART(nd, NFSPROC_GETATTR, vp); 4064 NFSSTATFS_GETATTRBIT(&attrbits); 4065 (void) nfsrv_putattrbit(nd, &attrbits); 4066 nd->nd_flag |= ND_USEGSSNAME; 4067 error = nfscl_request(nd, vp, p, cred, stuff); 4068 if (error) 4069 return (error); 4070 if (nd->nd_repstat == 0) { 4071 error = nfsv4_loadattr(nd, NULL, nap, NULL, NULL, 0, 4072 NULL, NULL, sbp, fsp, NULL, 0, NULL, NULL, NULL, p, 4073 cred); 4074 if (!error) { 4075 nmp->nm_fsid[0] = nap->na_filesid[0]; 4076 nmp->nm_fsid[1] = nap->na_filesid[1]; 4077 NFSSETHASSETFSID(nmp); 4078 *attrflagp = 1; 4079 } 4080 } else { 4081 error = nd->nd_repstat; 4082 } 4083 if (error) 4084 goto nfsmout; 4085 } else { 4086 NFSCL_REQSTART(nd, NFSPROC_FSSTAT, vp); 4087 error = nfscl_request(nd, vp, p, cred, stuff); 4088 if (error) 4089 return (error); 4090 if (nd->nd_flag & ND_NFSV3) { 4091 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 4092 if (error) 4093 goto nfsmout; 4094 } 4095 if (nd->nd_repstat) { 4096 error = nd->nd_repstat; 4097 goto nfsmout; 4098 } 4099 NFSM_DISSECT(tl, u_int32_t *, 4100 NFSX_STATFS(nd->nd_flag & ND_NFSV3)); 4101 } 4102 if (NFSHASNFSV3(nmp)) { 4103 sbp->sf_tbytes = fxdr_hyper(tl); tl += 2; 4104 sbp->sf_fbytes = fxdr_hyper(tl); tl += 2; 4105 sbp->sf_abytes = fxdr_hyper(tl); tl += 2; 4106 sbp->sf_tfiles = fxdr_hyper(tl); tl += 2; 4107 sbp->sf_ffiles = fxdr_hyper(tl); tl += 2; 4108 sbp->sf_afiles = fxdr_hyper(tl); tl += 2; 4109 sbp->sf_invarsec = fxdr_unsigned(u_int32_t, *tl); 4110 } else if (NFSHASNFSV4(nmp) == 0) { 4111 sbp->sf_tsize = fxdr_unsigned(u_int32_t, *tl++); 4112 sbp->sf_bsize = fxdr_unsigned(u_int32_t, *tl++); 4113 sbp->sf_blocks = fxdr_unsigned(u_int32_t, *tl++); 4114 sbp->sf_bfree = fxdr_unsigned(u_int32_t, *tl++); 4115 sbp->sf_bavail = fxdr_unsigned(u_int32_t, *tl); 4116 } 4117 nfsmout: 4118 mbuf_freem(nd->nd_mrep); 4119 return (error); 4120 } 4121 4122 /* 4123 * nfs pathconf rpc 4124 */ 4125 APPLESTATIC int 4126 nfsrpc_pathconf(vnode_t vp, struct nfsv3_pathconf *pc, 4127 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, 4128 void *stuff) 4129 { 4130 struct nfsrv_descript nfsd, *nd = &nfsd; 4131 struct nfsmount *nmp; 4132 u_int32_t *tl; 4133 nfsattrbit_t attrbits; 4134 int error; 4135 4136 *attrflagp = 0; 4137 nmp = VFSTONFS(vnode_mount(vp)); 4138 if (NFSHASNFSV4(nmp)) { 4139 /* 4140 * For V4, you actually do a getattr. 4141 */ 4142 NFSCL_REQSTART(nd, NFSPROC_GETATTR, vp); 4143 NFSPATHCONF_GETATTRBIT(&attrbits); 4144 (void) nfsrv_putattrbit(nd, &attrbits); 4145 nd->nd_flag |= ND_USEGSSNAME; 4146 error = nfscl_request(nd, vp, p, cred, stuff); 4147 if (error) 4148 return (error); 4149 if (nd->nd_repstat == 0) { 4150 error = nfsv4_loadattr(nd, NULL, nap, NULL, NULL, 0, 4151 pc, NULL, NULL, NULL, NULL, 0, NULL, NULL, NULL, p, 4152 cred); 4153 if (!error) 4154 *attrflagp = 1; 4155 } else { 4156 error = nd->nd_repstat; 4157 } 4158 } else { 4159 NFSCL_REQSTART(nd, NFSPROC_PATHCONF, vp); 4160 error = nfscl_request(nd, vp, p, cred, stuff); 4161 if (error) 4162 return (error); 4163 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 4164 if (nd->nd_repstat && !error) 4165 error = nd->nd_repstat; 4166 if (!error) { 4167 NFSM_DISSECT(tl, u_int32_t *, NFSX_V3PATHCONF); 4168 pc->pc_linkmax = fxdr_unsigned(u_int32_t, *tl++); 4169 pc->pc_namemax = fxdr_unsigned(u_int32_t, *tl++); 4170 pc->pc_notrunc = fxdr_unsigned(u_int32_t, *tl++); 4171 pc->pc_chownrestricted = 4172 fxdr_unsigned(u_int32_t, *tl++); 4173 pc->pc_caseinsensitive = 4174 fxdr_unsigned(u_int32_t, *tl++); 4175 pc->pc_casepreserving = fxdr_unsigned(u_int32_t, *tl); 4176 } 4177 } 4178 nfsmout: 4179 mbuf_freem(nd->nd_mrep); 4180 return (error); 4181 } 4182 4183 /* 4184 * nfs version 3 fsinfo rpc call 4185 */ 4186 APPLESTATIC int 4187 nfsrpc_fsinfo(vnode_t vp, struct nfsfsinfo *fsp, struct ucred *cred, 4188 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff) 4189 { 4190 u_int32_t *tl; 4191 struct nfsrv_descript nfsd, *nd = &nfsd; 4192 int error; 4193 4194 *attrflagp = 0; 4195 NFSCL_REQSTART(nd, NFSPROC_FSINFO, vp); 4196 error = nfscl_request(nd, vp, p, cred, stuff); 4197 if (error) 4198 return (error); 4199 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 4200 if (nd->nd_repstat && !error) 4201 error = nd->nd_repstat; 4202 if (!error) { 4203 NFSM_DISSECT(tl, u_int32_t *, NFSX_V3FSINFO); 4204 fsp->fs_rtmax = fxdr_unsigned(u_int32_t, *tl++); 4205 fsp->fs_rtpref = fxdr_unsigned(u_int32_t, *tl++); 4206 fsp->fs_rtmult = fxdr_unsigned(u_int32_t, *tl++); 4207 fsp->fs_wtmax = fxdr_unsigned(u_int32_t, *tl++); 4208 fsp->fs_wtpref = fxdr_unsigned(u_int32_t, *tl++); 4209 fsp->fs_wtmult = fxdr_unsigned(u_int32_t, *tl++); 4210 fsp->fs_dtpref = fxdr_unsigned(u_int32_t, *tl++); 4211 fsp->fs_maxfilesize = fxdr_hyper(tl); 4212 tl += 2; 4213 fxdr_nfsv3time(tl, &fsp->fs_timedelta); 4214 tl += 2; 4215 fsp->fs_properties = fxdr_unsigned(u_int32_t, *tl); 4216 } 4217 nfsmout: 4218 mbuf_freem(nd->nd_mrep); 4219 return (error); 4220 } 4221 4222 /* 4223 * This function performs the Renew RPC. 4224 */ 4225 APPLESTATIC int 4226 nfsrpc_renew(struct nfsclclient *clp, struct nfsclds *dsp, struct ucred *cred, 4227 NFSPROC_T *p) 4228 { 4229 u_int32_t *tl; 4230 struct nfsrv_descript nfsd; 4231 struct nfsrv_descript *nd = &nfsd; 4232 struct nfsmount *nmp; 4233 int error; 4234 struct nfssockreq *nrp; 4235 4236 nmp = clp->nfsc_nmp; 4237 if (nmp == NULL) 4238 return (0); 4239 nfscl_reqstart(nd, NFSPROC_RENEW, nmp, NULL, 0, NULL, 4240 &dsp->nfsclds_sess); 4241 if (!NFSHASNFSV4N(nmp)) { 4242 /* NFSv4.1 just uses a Sequence Op and not a Renew. */ 4243 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 4244 *tl++ = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[0]; 4245 *tl = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[1]; 4246 } 4247 nrp = dsp->nfsclds_sockp; 4248 if (nrp == NULL) 4249 /* If NULL, use the MDS socket. */ 4250 nrp = &nmp->nm_sockreq; 4251 nd->nd_flag |= ND_USEGSSNAME; 4252 error = newnfs_request(nd, nmp, NULL, nrp, NULL, p, cred, 4253 NFS_PROG, NFS_VER4, NULL, 1, NULL, &dsp->nfsclds_sess); 4254 if (error) 4255 return (error); 4256 error = nd->nd_repstat; 4257 mbuf_freem(nd->nd_mrep); 4258 return (error); 4259 } 4260 4261 /* 4262 * This function performs the Releaselockowner RPC. 4263 */ 4264 APPLESTATIC int 4265 nfsrpc_rellockown(struct nfsmount *nmp, struct nfscllockowner *lp, 4266 uint8_t *fh, int fhlen, struct ucred *cred, NFSPROC_T *p) 4267 { 4268 struct nfsrv_descript nfsd, *nd = &nfsd; 4269 u_int32_t *tl; 4270 int error; 4271 uint8_t own[NFSV4CL_LOCKNAMELEN + NFSX_V4FHMAX]; 4272 4273 if (NFSHASNFSV4N(nmp)) { 4274 /* For NFSv4.1, do a FreeStateID. */ 4275 nfscl_reqstart(nd, NFSPROC_FREESTATEID, nmp, NULL, 0, NULL, 4276 NULL); 4277 nfsm_stateidtom(nd, &lp->nfsl_stateid, NFSSTATEID_PUTSTATEID); 4278 } else { 4279 nfscl_reqstart(nd, NFSPROC_RELEASELCKOWN, nmp, NULL, 0, NULL, 4280 NULL); 4281 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 4282 *tl++ = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[0]; 4283 *tl = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[1]; 4284 NFSBCOPY(lp->nfsl_owner, own, NFSV4CL_LOCKNAMELEN); 4285 NFSBCOPY(fh, &own[NFSV4CL_LOCKNAMELEN], fhlen); 4286 (void)nfsm_strtom(nd, own, NFSV4CL_LOCKNAMELEN + fhlen); 4287 } 4288 nd->nd_flag |= ND_USEGSSNAME; 4289 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 4290 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 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 Compound to get the mount pt FH. 4300 */ 4301 APPLESTATIC int 4302 nfsrpc_getdirpath(struct nfsmount *nmp, u_char *dirpath, struct ucred *cred, 4303 NFSPROC_T *p) 4304 { 4305 u_int32_t *tl; 4306 struct nfsrv_descript nfsd; 4307 struct nfsrv_descript *nd = &nfsd; 4308 u_char *cp, *cp2; 4309 int error, cnt, len, setnil; 4310 u_int32_t *opcntp; 4311 4312 nfscl_reqstart(nd, NFSPROC_PUTROOTFH, nmp, NULL, 0, &opcntp, NULL); 4313 cp = dirpath; 4314 cnt = 0; 4315 do { 4316 setnil = 0; 4317 while (*cp == '/') 4318 cp++; 4319 cp2 = cp; 4320 while (*cp2 != '\0' && *cp2 != '/') 4321 cp2++; 4322 if (*cp2 == '/') { 4323 setnil = 1; 4324 *cp2 = '\0'; 4325 } 4326 if (cp2 != cp) { 4327 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 4328 *tl = txdr_unsigned(NFSV4OP_LOOKUP); 4329 nfsm_strtom(nd, cp, strlen(cp)); 4330 cnt++; 4331 } 4332 if (setnil) 4333 *cp2++ = '/'; 4334 cp = cp2; 4335 } while (*cp != '\0'); 4336 if (NFSHASNFSV4N(nmp)) 4337 /* Has a Sequence Op done by nfscl_reqstart(). */ 4338 *opcntp = txdr_unsigned(3 + cnt); 4339 else 4340 *opcntp = txdr_unsigned(2 + cnt); 4341 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 4342 *tl = txdr_unsigned(NFSV4OP_GETFH); 4343 nd->nd_flag |= ND_USEGSSNAME; 4344 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 4345 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4346 if (error) 4347 return (error); 4348 if (nd->nd_repstat == 0) { 4349 NFSM_DISSECT(tl, u_int32_t *, (3 + 2 * cnt) * NFSX_UNSIGNED); 4350 tl += (2 + 2 * cnt); 4351 if ((len = fxdr_unsigned(int, *tl)) <= 0 || 4352 len > NFSX_FHMAX) { 4353 nd->nd_repstat = NFSERR_BADXDR; 4354 } else { 4355 nd->nd_repstat = nfsrv_mtostr(nd, nmp->nm_fh, len); 4356 if (nd->nd_repstat == 0) 4357 nmp->nm_fhsize = len; 4358 } 4359 } 4360 error = nd->nd_repstat; 4361 nfsmout: 4362 mbuf_freem(nd->nd_mrep); 4363 return (error); 4364 } 4365 4366 /* 4367 * This function performs the Delegreturn RPC. 4368 */ 4369 APPLESTATIC int 4370 nfsrpc_delegreturn(struct nfscldeleg *dp, struct ucred *cred, 4371 struct nfsmount *nmp, NFSPROC_T *p, int syscred) 4372 { 4373 u_int32_t *tl; 4374 struct nfsrv_descript nfsd; 4375 struct nfsrv_descript *nd = &nfsd; 4376 int error; 4377 4378 nfscl_reqstart(nd, NFSPROC_DELEGRETURN, nmp, dp->nfsdl_fh, 4379 dp->nfsdl_fhlen, NULL, NULL); 4380 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID); 4381 if (NFSHASNFSV4N(nmp)) 4382 *tl++ = 0; 4383 else 4384 *tl++ = dp->nfsdl_stateid.seqid; 4385 *tl++ = dp->nfsdl_stateid.other[0]; 4386 *tl++ = dp->nfsdl_stateid.other[1]; 4387 *tl = dp->nfsdl_stateid.other[2]; 4388 if (syscred) 4389 nd->nd_flag |= ND_USEGSSNAME; 4390 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 4391 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4392 if (error) 4393 return (error); 4394 error = nd->nd_repstat; 4395 mbuf_freem(nd->nd_mrep); 4396 return (error); 4397 } 4398 4399 /* 4400 * nfs getacl call. 4401 */ 4402 APPLESTATIC int 4403 nfsrpc_getacl(vnode_t vp, struct ucred *cred, NFSPROC_T *p, 4404 struct acl *aclp, void *stuff) 4405 { 4406 struct nfsrv_descript nfsd, *nd = &nfsd; 4407 int error; 4408 nfsattrbit_t attrbits; 4409 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 4410 4411 if (nfsrv_useacl == 0 || !NFSHASNFSV4(nmp)) 4412 return (EOPNOTSUPP); 4413 NFSCL_REQSTART(nd, NFSPROC_GETACL, vp); 4414 NFSZERO_ATTRBIT(&attrbits); 4415 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_ACL); 4416 (void) nfsrv_putattrbit(nd, &attrbits); 4417 error = nfscl_request(nd, vp, p, cred, stuff); 4418 if (error) 4419 return (error); 4420 if (!nd->nd_repstat) 4421 error = nfsv4_loadattr(nd, vp, NULL, NULL, NULL, 0, NULL, 4422 NULL, NULL, NULL, aclp, 0, NULL, NULL, NULL, p, cred); 4423 else 4424 error = nd->nd_repstat; 4425 mbuf_freem(nd->nd_mrep); 4426 return (error); 4427 } 4428 4429 /* 4430 * nfs setacl call. 4431 */ 4432 APPLESTATIC int 4433 nfsrpc_setacl(vnode_t vp, struct ucred *cred, NFSPROC_T *p, 4434 struct acl *aclp, void *stuff) 4435 { 4436 int error; 4437 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 4438 4439 if (nfsrv_useacl == 0 || !NFSHASNFSV4(nmp)) 4440 return (EOPNOTSUPP); 4441 error = nfsrpc_setattr(vp, NULL, aclp, cred, p, NULL, NULL, stuff); 4442 return (error); 4443 } 4444 4445 /* 4446 * nfs setacl call. 4447 */ 4448 static int 4449 nfsrpc_setaclrpc(vnode_t vp, struct ucred *cred, NFSPROC_T *p, 4450 struct acl *aclp, nfsv4stateid_t *stateidp, void *stuff) 4451 { 4452 struct nfsrv_descript nfsd, *nd = &nfsd; 4453 int error; 4454 nfsattrbit_t attrbits; 4455 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 4456 4457 if (!NFSHASNFSV4(nmp)) 4458 return (EOPNOTSUPP); 4459 NFSCL_REQSTART(nd, NFSPROC_SETACL, vp); 4460 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID); 4461 NFSZERO_ATTRBIT(&attrbits); 4462 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_ACL); 4463 (void) nfsv4_fillattr(nd, vnode_mount(vp), vp, aclp, NULL, NULL, 0, 4464 &attrbits, NULL, NULL, 0, 0, 0, 0, (uint64_t)0); 4465 error = nfscl_request(nd, vp, p, cred, stuff); 4466 if (error) 4467 return (error); 4468 /* Don't care about the pre/postop attributes */ 4469 mbuf_freem(nd->nd_mrep); 4470 return (nd->nd_repstat); 4471 } 4472 4473 /* 4474 * Do the NFSv4.1 Exchange ID. 4475 */ 4476 int 4477 nfsrpc_exchangeid(struct nfsmount *nmp, struct nfsclclient *clp, 4478 struct nfssockreq *nrp, uint32_t exchflags, struct nfsclds **dspp, 4479 struct ucred *cred, NFSPROC_T *p) 4480 { 4481 uint32_t *tl, v41flags; 4482 struct nfsrv_descript nfsd; 4483 struct nfsrv_descript *nd = &nfsd; 4484 struct nfsclds *dsp; 4485 struct timespec verstime; 4486 int error, len; 4487 4488 *dspp = NULL; 4489 nfscl_reqstart(nd, NFSPROC_EXCHANGEID, nmp, NULL, 0, NULL, NULL); 4490 NFSM_BUILD(tl, uint32_t *, 2 * NFSX_UNSIGNED); 4491 *tl++ = txdr_unsigned(nfsboottime.tv_sec); /* Client owner */ 4492 *tl = txdr_unsigned(clp->nfsc_rev); 4493 (void) nfsm_strtom(nd, clp->nfsc_id, clp->nfsc_idlen); 4494 4495 NFSM_BUILD(tl, uint32_t *, 3 * NFSX_UNSIGNED); 4496 *tl++ = txdr_unsigned(exchflags); 4497 *tl++ = txdr_unsigned(NFSV4EXCH_SP4NONE); 4498 4499 /* Set the implementation id4 */ 4500 *tl = txdr_unsigned(1); 4501 (void) nfsm_strtom(nd, "freebsd.org", strlen("freebsd.org")); 4502 (void) nfsm_strtom(nd, version, strlen(version)); 4503 NFSM_BUILD(tl, uint32_t *, NFSX_V4TIME); 4504 verstime.tv_sec = 1293840000; /* Jan 1, 2011 */ 4505 verstime.tv_nsec = 0; 4506 txdr_nfsv4time(&verstime, tl); 4507 nd->nd_flag |= ND_USEGSSNAME; 4508 error = newnfs_request(nd, nmp, NULL, nrp, NULL, p, cred, 4509 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4510 NFSCL_DEBUG(1, "exchangeid err=%d reps=%d\n", error, 4511 (int)nd->nd_repstat); 4512 if (error != 0) 4513 return (error); 4514 if (nd->nd_repstat == 0) { 4515 NFSM_DISSECT(tl, uint32_t *, 6 * NFSX_UNSIGNED + NFSX_HYPER); 4516 len = fxdr_unsigned(int, *(tl + 7)); 4517 if (len < 0 || len > NFSV4_OPAQUELIMIT) { 4518 error = NFSERR_BADXDR; 4519 goto nfsmout; 4520 } 4521 dsp = malloc(sizeof(struct nfsclds) + len, M_NFSCLDS, 4522 M_WAITOK | M_ZERO); 4523 dsp->nfsclds_expire = NFSD_MONOSEC + clp->nfsc_renew; 4524 dsp->nfsclds_servownlen = len; 4525 dsp->nfsclds_sess.nfsess_clientid.lval[0] = *tl++; 4526 dsp->nfsclds_sess.nfsess_clientid.lval[1] = *tl++; 4527 dsp->nfsclds_sess.nfsess_sequenceid = 4528 fxdr_unsigned(uint32_t, *tl++); 4529 v41flags = fxdr_unsigned(uint32_t, *tl); 4530 if ((v41flags & NFSV4EXCH_USEPNFSMDS) != 0 && 4531 NFSHASPNFSOPT(nmp)) { 4532 NFSCL_DEBUG(1, "set PNFS\n"); 4533 NFSLOCKMNT(nmp); 4534 nmp->nm_state |= NFSSTA_PNFS; 4535 NFSUNLOCKMNT(nmp); 4536 dsp->nfsclds_flags |= NFSCLDS_MDS; 4537 } 4538 if ((v41flags & NFSV4EXCH_USEPNFSDS) != 0) 4539 dsp->nfsclds_flags |= NFSCLDS_DS; 4540 if (len > 0) 4541 nd->nd_repstat = nfsrv_mtostr(nd, 4542 dsp->nfsclds_serverown, len); 4543 if (nd->nd_repstat == 0) { 4544 mtx_init(&dsp->nfsclds_mtx, "nfsds", NULL, MTX_DEF); 4545 mtx_init(&dsp->nfsclds_sess.nfsess_mtx, "nfssession", 4546 NULL, MTX_DEF); 4547 nfscl_initsessionslots(&dsp->nfsclds_sess); 4548 *dspp = dsp; 4549 } else 4550 free(dsp, M_NFSCLDS); 4551 } 4552 error = nd->nd_repstat; 4553 nfsmout: 4554 mbuf_freem(nd->nd_mrep); 4555 return (error); 4556 } 4557 4558 /* 4559 * Do the NFSv4.1 Create Session. 4560 */ 4561 int 4562 nfsrpc_createsession(struct nfsmount *nmp, struct nfsclsession *sep, 4563 struct nfssockreq *nrp, uint32_t sequenceid, int mds, struct ucred *cred, 4564 NFSPROC_T *p) 4565 { 4566 uint32_t crflags, *tl; 4567 struct nfsrv_descript nfsd; 4568 struct nfsrv_descript *nd = &nfsd; 4569 int error, irdcnt; 4570 4571 nfscl_reqstart(nd, NFSPROC_CREATESESSION, nmp, NULL, 0, NULL, NULL); 4572 NFSM_BUILD(tl, uint32_t *, 4 * NFSX_UNSIGNED); 4573 *tl++ = sep->nfsess_clientid.lval[0]; 4574 *tl++ = sep->nfsess_clientid.lval[1]; 4575 *tl++ = txdr_unsigned(sequenceid); 4576 crflags = (NFSMNT_RDONLY(nmp->nm_mountp) ? 0 : NFSV4CRSESS_PERSIST); 4577 if (nfscl_enablecallb != 0 && nfs_numnfscbd > 0) 4578 crflags |= NFSV4CRSESS_CONNBACKCHAN; 4579 *tl = txdr_unsigned(crflags); 4580 4581 /* Fill in fore channel attributes. */ 4582 NFSM_BUILD(tl, uint32_t *, 7 * NFSX_UNSIGNED); 4583 *tl++ = 0; /* Header pad size */ 4584 *tl++ = txdr_unsigned(100000); /* Max request size */ 4585 *tl++ = txdr_unsigned(100000); /* Max response size */ 4586 *tl++ = txdr_unsigned(4096); /* Max response size cached */ 4587 *tl++ = txdr_unsigned(20); /* Max operations */ 4588 *tl++ = txdr_unsigned(64); /* Max slots */ 4589 *tl = 0; /* No rdma ird */ 4590 4591 /* Fill in back channel attributes. */ 4592 NFSM_BUILD(tl, uint32_t *, 7 * NFSX_UNSIGNED); 4593 *tl++ = 0; /* Header pad size */ 4594 *tl++ = txdr_unsigned(10000); /* Max request size */ 4595 *tl++ = txdr_unsigned(10000); /* Max response size */ 4596 *tl++ = txdr_unsigned(4096); /* Max response size cached */ 4597 *tl++ = txdr_unsigned(4); /* Max operations */ 4598 *tl++ = txdr_unsigned(NFSV4_CBSLOTS); /* Max slots */ 4599 *tl = 0; /* No rdma ird */ 4600 4601 NFSM_BUILD(tl, uint32_t *, 8 * NFSX_UNSIGNED); 4602 *tl++ = txdr_unsigned(NFS_CALLBCKPROG); /* Call back prog # */ 4603 4604 /* Allow AUTH_SYS callbacks as uid, gid == 0. */ 4605 *tl++ = txdr_unsigned(1); /* Auth_sys only */ 4606 *tl++ = txdr_unsigned(AUTH_SYS); /* AUTH_SYS type */ 4607 *tl++ = txdr_unsigned(nfsboottime.tv_sec); /* time stamp */ 4608 *tl++ = 0; /* Null machine name */ 4609 *tl++ = 0; /* Uid == 0 */ 4610 *tl++ = 0; /* Gid == 0 */ 4611 *tl = 0; /* No additional gids */ 4612 nd->nd_flag |= ND_USEGSSNAME; 4613 error = newnfs_request(nd, nmp, NULL, nrp, NULL, p, cred, NFS_PROG, 4614 NFS_VER4, NULL, 1, NULL, NULL); 4615 if (error != 0) 4616 return (error); 4617 if (nd->nd_repstat == 0) { 4618 NFSM_DISSECT(tl, uint32_t *, NFSX_V4SESSIONID + 4619 2 * NFSX_UNSIGNED); 4620 bcopy(tl, sep->nfsess_sessionid, NFSX_V4SESSIONID); 4621 tl += NFSX_V4SESSIONID / NFSX_UNSIGNED; 4622 sep->nfsess_sequenceid = fxdr_unsigned(uint32_t, *tl++); 4623 crflags = fxdr_unsigned(uint32_t, *tl); 4624 if ((crflags & NFSV4CRSESS_PERSIST) != 0 && mds != 0) { 4625 NFSLOCKMNT(nmp); 4626 nmp->nm_state |= NFSSTA_SESSPERSIST; 4627 NFSUNLOCKMNT(nmp); 4628 } 4629 4630 /* Get the fore channel slot count. */ 4631 NFSM_DISSECT(tl, uint32_t *, 7 * NFSX_UNSIGNED); 4632 tl += 3; /* Skip the other counts. */ 4633 sep->nfsess_maxcache = fxdr_unsigned(int, *tl++); 4634 tl++; 4635 sep->nfsess_foreslots = fxdr_unsigned(uint16_t, *tl++); 4636 NFSCL_DEBUG(4, "fore slots=%d\n", (int)sep->nfsess_foreslots); 4637 irdcnt = fxdr_unsigned(int, *tl); 4638 if (irdcnt > 0) 4639 NFSM_DISSECT(tl, uint32_t *, irdcnt * NFSX_UNSIGNED); 4640 4641 /* and the back channel slot count. */ 4642 NFSM_DISSECT(tl, uint32_t *, 7 * NFSX_UNSIGNED); 4643 tl += 5; 4644 sep->nfsess_backslots = fxdr_unsigned(uint16_t, *tl); 4645 NFSCL_DEBUG(4, "back slots=%d\n", (int)sep->nfsess_backslots); 4646 } 4647 error = nd->nd_repstat; 4648 nfsmout: 4649 mbuf_freem(nd->nd_mrep); 4650 return (error); 4651 } 4652 4653 /* 4654 * Do the NFSv4.1 Destroy Session. 4655 */ 4656 int 4657 nfsrpc_destroysession(struct nfsmount *nmp, struct nfsclclient *clp, 4658 struct ucred *cred, NFSPROC_T *p) 4659 { 4660 uint32_t *tl; 4661 struct nfsrv_descript nfsd; 4662 struct nfsrv_descript *nd = &nfsd; 4663 int error; 4664 4665 nfscl_reqstart(nd, NFSPROC_DESTROYSESSION, nmp, NULL, 0, NULL, NULL); 4666 NFSM_BUILD(tl, uint32_t *, NFSX_V4SESSIONID); 4667 bcopy(NFSMNT_MDSSESSION(nmp)->nfsess_sessionid, tl, NFSX_V4SESSIONID); 4668 nd->nd_flag |= ND_USEGSSNAME; 4669 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 4670 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4671 if (error != 0) 4672 return (error); 4673 error = nd->nd_repstat; 4674 mbuf_freem(nd->nd_mrep); 4675 return (error); 4676 } 4677 4678 /* 4679 * Do the NFSv4.1 Destroy Client. 4680 */ 4681 int 4682 nfsrpc_destroyclient(struct nfsmount *nmp, struct nfsclclient *clp, 4683 struct ucred *cred, NFSPROC_T *p) 4684 { 4685 uint32_t *tl; 4686 struct nfsrv_descript nfsd; 4687 struct nfsrv_descript *nd = &nfsd; 4688 int error; 4689 4690 nfscl_reqstart(nd, NFSPROC_DESTROYCLIENT, nmp, NULL, 0, NULL, NULL); 4691 NFSM_BUILD(tl, uint32_t *, 2 * NFSX_UNSIGNED); 4692 *tl++ = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[0]; 4693 *tl = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[1]; 4694 nd->nd_flag |= ND_USEGSSNAME; 4695 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 4696 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4697 if (error != 0) 4698 return (error); 4699 error = nd->nd_repstat; 4700 mbuf_freem(nd->nd_mrep); 4701 return (error); 4702 } 4703 4704 /* 4705 * Do the NFSv4.1 LayoutGet. 4706 */ 4707 int 4708 nfsrpc_layoutget(struct nfsmount *nmp, uint8_t *fhp, int fhlen, int iomode, 4709 uint64_t offset, uint64_t len, uint64_t minlen, int layoutlen, 4710 nfsv4stateid_t *stateidp, int *retonclosep, struct nfsclflayouthead *flhp, 4711 struct ucred *cred, NFSPROC_T *p, void *stuff) 4712 { 4713 uint32_t *tl; 4714 struct nfsrv_descript nfsd, *nd = &nfsd; 4715 struct nfsfh *nfhp; 4716 struct nfsclflayout *flp, *prevflp, *tflp; 4717 int cnt, error, gotiomode, fhcnt, nfhlen, i, j; 4718 uint8_t *cp; 4719 uint64_t retlen; 4720 4721 flp = NULL; 4722 gotiomode = -1; 4723 nfscl_reqstart(nd, NFSPROC_LAYOUTGET, nmp, fhp, fhlen, NULL, NULL); 4724 NFSM_BUILD(tl, uint32_t *, 4 * NFSX_UNSIGNED + 3 * NFSX_HYPER + 4725 NFSX_STATEID); 4726 *tl++ = newnfs_false; /* Don't signal availability. */ 4727 *tl++ = txdr_unsigned(NFSLAYOUT_NFSV4_1_FILES); 4728 *tl++ = txdr_unsigned(iomode); 4729 txdr_hyper(offset, tl); 4730 tl += 2; 4731 txdr_hyper(len, tl); 4732 tl += 2; 4733 txdr_hyper(minlen, tl); 4734 tl += 2; 4735 *tl++ = txdr_unsigned(stateidp->seqid); 4736 NFSCL_DEBUG(4, "layget seq=%d\n", (int)stateidp->seqid); 4737 *tl++ = stateidp->other[0]; 4738 *tl++ = stateidp->other[1]; 4739 *tl++ = stateidp->other[2]; 4740 *tl = txdr_unsigned(layoutlen); 4741 nd->nd_flag |= ND_USEGSSNAME; 4742 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 4743 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4744 if (error != 0) 4745 return (error); 4746 if (nd->nd_repstat == 0) { 4747 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED + NFSX_STATEID); 4748 if (*tl++ != 0) 4749 *retonclosep = 1; 4750 else 4751 *retonclosep = 0; 4752 stateidp->seqid = fxdr_unsigned(uint32_t, *tl++); 4753 NFSCL_DEBUG(4, "retoncls=%d stseq=%d\n", *retonclosep, 4754 (int)stateidp->seqid); 4755 stateidp->other[0] = *tl++; 4756 stateidp->other[1] = *tl++; 4757 stateidp->other[2] = *tl++; 4758 cnt = fxdr_unsigned(int, *tl); 4759 NFSCL_DEBUG(4, "layg cnt=%d\n", cnt); 4760 if (cnt <= 0 || cnt > 10000) { 4761 /* Don't accept more than 10000 layouts in reply. */ 4762 error = NFSERR_BADXDR; 4763 goto nfsmout; 4764 } 4765 for (i = 0; i < cnt; i++) { 4766 /* Dissect all the way to the file handle cnt. */ 4767 NFSM_DISSECT(tl, uint32_t *, 3 * NFSX_HYPER + 4768 6 * NFSX_UNSIGNED + NFSX_V4DEVICEID); 4769 fhcnt = fxdr_unsigned(int, *(tl + 11 + 4770 NFSX_V4DEVICEID / NFSX_UNSIGNED)); 4771 NFSCL_DEBUG(4, "fhcnt=%d\n", fhcnt); 4772 if (fhcnt < 0 || fhcnt > 100) { 4773 /* Don't accept more than 100 file handles. */ 4774 error = NFSERR_BADXDR; 4775 goto nfsmout; 4776 } 4777 if (fhcnt > 1) 4778 flp = malloc(sizeof(*flp) + (fhcnt - 1) * 4779 sizeof(struct nfsfh *), 4780 M_NFSFLAYOUT, M_WAITOK); 4781 else 4782 flp = malloc(sizeof(*flp), 4783 M_NFSFLAYOUT, M_WAITOK); 4784 flp->nfsfl_flags = 0; 4785 flp->nfsfl_fhcnt = 0; 4786 flp->nfsfl_devp = NULL; 4787 flp->nfsfl_off = fxdr_hyper(tl); tl += 2; 4788 retlen = fxdr_hyper(tl); tl += 2; 4789 if (flp->nfsfl_off + retlen < flp->nfsfl_off) 4790 flp->nfsfl_end = UINT64_MAX - flp->nfsfl_off; 4791 else 4792 flp->nfsfl_end = flp->nfsfl_off + retlen; 4793 flp->nfsfl_iomode = fxdr_unsigned(int, *tl++); 4794 if (gotiomode == -1) 4795 gotiomode = flp->nfsfl_iomode; 4796 NFSCL_DEBUG(4, "layg reqiom=%d retiom=%d\n", iomode, 4797 (int)flp->nfsfl_iomode); 4798 if (fxdr_unsigned(int, *tl++) != 4799 NFSLAYOUT_NFSV4_1_FILES) { 4800 printf("NFSv4.1: got non-files layout\n"); 4801 error = NFSERR_BADXDR; 4802 goto nfsmout; 4803 } 4804 NFSBCOPY(++tl, flp->nfsfl_dev, NFSX_V4DEVICEID); 4805 tl += (NFSX_V4DEVICEID / NFSX_UNSIGNED); 4806 flp->nfsfl_util = fxdr_unsigned(uint32_t, *tl++); 4807 NFSCL_DEBUG(4, "flutil=0x%x\n", flp->nfsfl_util); 4808 flp->nfsfl_stripe1 = fxdr_unsigned(uint32_t, *tl++); 4809 flp->nfsfl_patoff = fxdr_hyper(tl); tl += 2; 4810 if (fxdr_unsigned(int, *tl) != fhcnt) { 4811 printf("EEK! bad fhcnt\n"); 4812 error = NFSERR_BADXDR; 4813 goto nfsmout; 4814 } 4815 for (j = 0; j < fhcnt; j++) { 4816 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 4817 nfhlen = fxdr_unsigned(int, *tl); 4818 if (nfhlen <= 0 || nfhlen > NFSX_V4FHMAX) { 4819 error = NFSERR_BADXDR; 4820 goto nfsmout; 4821 } 4822 nfhp = malloc(sizeof(*nfhp) + nfhlen - 1, 4823 M_NFSFH, M_WAITOK); 4824 flp->nfsfl_fh[j] = nfhp; 4825 flp->nfsfl_fhcnt++; 4826 nfhp->nfh_len = nfhlen; 4827 NFSM_DISSECT(cp, uint8_t *, NFSM_RNDUP(nfhlen)); 4828 NFSBCOPY(cp, nfhp->nfh_fh, nfhlen); 4829 } 4830 if (flp->nfsfl_iomode == gotiomode) { 4831 /* Keep the list in increasing offset order. */ 4832 tflp = LIST_FIRST(flhp); 4833 prevflp = NULL; 4834 while (tflp != NULL && 4835 tflp->nfsfl_off < flp->nfsfl_off) { 4836 prevflp = tflp; 4837 tflp = LIST_NEXT(tflp, nfsfl_list); 4838 } 4839 if (prevflp == NULL) 4840 LIST_INSERT_HEAD(flhp, flp, nfsfl_list); 4841 else 4842 LIST_INSERT_AFTER(prevflp, flp, 4843 nfsfl_list); 4844 } else { 4845 printf("nfscl_layoutget(): got wrong iomode\n"); 4846 nfscl_freeflayout(flp); 4847 } 4848 flp = NULL; 4849 } 4850 } 4851 if (nd->nd_repstat != 0 && error == 0) 4852 error = nd->nd_repstat; 4853 nfsmout: 4854 if (error != 0 && flp != NULL) 4855 nfscl_freeflayout(flp); 4856 mbuf_freem(nd->nd_mrep); 4857 return (error); 4858 } 4859 4860 /* 4861 * Do the NFSv4.1 Get Device Info. 4862 */ 4863 int 4864 nfsrpc_getdeviceinfo(struct nfsmount *nmp, uint8_t *deviceid, int layouttype, 4865 uint32_t *notifybitsp, struct nfscldevinfo **ndip, struct ucred *cred, 4866 NFSPROC_T *p) 4867 { 4868 uint32_t cnt, *tl; 4869 struct nfsrv_descript nfsd; 4870 struct nfsrv_descript *nd = &nfsd; 4871 struct sockaddr_storage ss; 4872 struct nfsclds *dsp = NULL, **dspp; 4873 struct nfscldevinfo *ndi; 4874 int addrcnt, bitcnt, error, i, isudp, j, pos, safilled, stripecnt; 4875 uint8_t stripeindex; 4876 4877 *ndip = NULL; 4878 ndi = NULL; 4879 nfscl_reqstart(nd, NFSPROC_GETDEVICEINFO, nmp, NULL, 0, NULL, NULL); 4880 NFSM_BUILD(tl, uint32_t *, NFSX_V4DEVICEID + 3 * NFSX_UNSIGNED); 4881 NFSBCOPY(deviceid, tl, NFSX_V4DEVICEID); 4882 tl += (NFSX_V4DEVICEID / NFSX_UNSIGNED); 4883 *tl++ = txdr_unsigned(layouttype); 4884 *tl++ = txdr_unsigned(100000); 4885 if (notifybitsp != NULL && *notifybitsp != 0) { 4886 *tl = txdr_unsigned(1); /* One word of bits. */ 4887 NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED); 4888 *tl = txdr_unsigned(*notifybitsp); 4889 } else 4890 *tl = txdr_unsigned(0); 4891 nd->nd_flag |= ND_USEGSSNAME; 4892 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 4893 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4894 if (error != 0) 4895 return (error); 4896 if (nd->nd_repstat == 0) { 4897 NFSM_DISSECT(tl, uint32_t *, 3 * NFSX_UNSIGNED); 4898 if (layouttype != fxdr_unsigned(int, *tl++)) 4899 printf("EEK! devinfo layout type not same!\n"); 4900 stripecnt = fxdr_unsigned(int, *++tl); 4901 NFSCL_DEBUG(4, "stripecnt=%d\n", stripecnt); 4902 if (stripecnt < 1 || stripecnt > 4096) { 4903 printf("NFS devinfo stripecnt %d: out of range\n", 4904 stripecnt); 4905 error = NFSERR_BADXDR; 4906 goto nfsmout; 4907 } 4908 NFSM_DISSECT(tl, uint32_t *, (stripecnt + 1) * NFSX_UNSIGNED); 4909 addrcnt = fxdr_unsigned(int, *(tl + stripecnt)); 4910 NFSCL_DEBUG(4, "addrcnt=%d\n", addrcnt); 4911 if (addrcnt < 1 || addrcnt > 128) { 4912 printf("NFS devinfo addrcnt %d: out of range\n", 4913 addrcnt); 4914 error = NFSERR_BADXDR; 4915 goto nfsmout; 4916 } 4917 4918 /* 4919 * Now we know how many stripe indices and addresses, so 4920 * we can allocate the structure the correct size. 4921 */ 4922 i = (stripecnt * sizeof(uint8_t)) / sizeof(struct nfsclds *) 4923 + 1; 4924 NFSCL_DEBUG(4, "stripeindices=%d\n", i); 4925 ndi = malloc(sizeof(*ndi) + (addrcnt + i) * 4926 sizeof(struct nfsclds *), M_NFSDEVINFO, M_WAITOK | M_ZERO); 4927 NFSBCOPY(deviceid, ndi->nfsdi_deviceid, NFSX_V4DEVICEID); 4928 ndi->nfsdi_refcnt = 0; 4929 ndi->nfsdi_stripecnt = stripecnt; 4930 ndi->nfsdi_addrcnt = addrcnt; 4931 /* Fill in the stripe indices. */ 4932 for (i = 0; i < stripecnt; i++) { 4933 stripeindex = fxdr_unsigned(uint8_t, *tl++); 4934 NFSCL_DEBUG(4, "stripeind=%d\n", stripeindex); 4935 if (stripeindex >= addrcnt) { 4936 printf("NFS devinfo stripeindex %d: too big\n", 4937 (int)stripeindex); 4938 error = NFSERR_BADXDR; 4939 goto nfsmout; 4940 } 4941 nfsfldi_setstripeindex(ndi, i, stripeindex); 4942 } 4943 4944 /* Now, dissect the server address(es). */ 4945 safilled = 0; 4946 for (i = 0; i < addrcnt; i++) { 4947 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 4948 cnt = fxdr_unsigned(uint32_t, *tl); 4949 if (cnt == 0) { 4950 printf("NFS devinfo 0 len addrlist\n"); 4951 error = NFSERR_BADXDR; 4952 goto nfsmout; 4953 } 4954 dspp = nfsfldi_addr(ndi, i); 4955 pos = arc4random() % cnt; /* Choose one. */ 4956 safilled = 0; 4957 for (j = 0; j < cnt; j++) { 4958 error = nfsv4_getipaddr(nd, &ss, &isudp); 4959 if (error != 0 && error != EPERM) { 4960 error = NFSERR_BADXDR; 4961 goto nfsmout; 4962 } 4963 if (error == 0 && isudp == 0) { 4964 /* 4965 * The algorithm is: 4966 * - use "pos" entry if it is of the 4967 * same af_family or none of them 4968 * is of the same af_family 4969 * else 4970 * - use the first one of the same 4971 * af_family. 4972 */ 4973 if ((safilled == 0 && ss.ss_family == 4974 nmp->nm_nam->sa_family) || 4975 (j == pos && 4976 (safilled == 0 || ss.ss_family == 4977 nmp->nm_nam->sa_family)) || 4978 (safilled == 1 && ss.ss_family == 4979 nmp->nm_nam->sa_family)) { 4980 error = nfsrpc_fillsa(nmp, &ss, 4981 &dsp, p); 4982 if (error == 0) { 4983 *dspp = dsp; 4984 if (ss.ss_family == 4985 nmp->nm_nam->sa_family) 4986 safilled = 2; 4987 else 4988 safilled = 1; 4989 } 4990 } 4991 } 4992 } 4993 if (safilled == 0) 4994 break; 4995 } 4996 4997 /* And the notify bits. */ 4998 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 4999 if (safilled != 0) { 5000 bitcnt = fxdr_unsigned(int, *tl); 5001 if (bitcnt > 0) { 5002 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 5003 if (notifybitsp != NULL) 5004 *notifybitsp = 5005 fxdr_unsigned(uint32_t, *tl); 5006 } 5007 *ndip = ndi; 5008 } else 5009 error = EPERM; 5010 } 5011 if (nd->nd_repstat != 0) 5012 error = nd->nd_repstat; 5013 nfsmout: 5014 if (error != 0 && ndi != NULL) 5015 nfscl_freedevinfo(ndi); 5016 mbuf_freem(nd->nd_mrep); 5017 return (error); 5018 } 5019 5020 /* 5021 * Do the NFSv4.1 LayoutCommit. 5022 */ 5023 int 5024 nfsrpc_layoutcommit(struct nfsmount *nmp, uint8_t *fh, int fhlen, int reclaim, 5025 uint64_t off, uint64_t len, uint64_t lastbyte, nfsv4stateid_t *stateidp, 5026 int layouttype, int layoutupdatecnt, uint8_t *layp, struct ucred *cred, 5027 NFSPROC_T *p, void *stuff) 5028 { 5029 uint32_t *tl; 5030 struct nfsrv_descript nfsd, *nd = &nfsd; 5031 int error, outcnt, i; 5032 uint8_t *cp; 5033 5034 nfscl_reqstart(nd, NFSPROC_LAYOUTCOMMIT, nmp, fh, fhlen, NULL, NULL); 5035 NFSM_BUILD(tl, uint32_t *, 5 * NFSX_UNSIGNED + 3 * NFSX_HYPER + 5036 NFSX_STATEID); 5037 txdr_hyper(off, tl); 5038 tl += 2; 5039 txdr_hyper(len, tl); 5040 tl += 2; 5041 if (reclaim != 0) 5042 *tl++ = newnfs_true; 5043 else 5044 *tl++ = newnfs_false; 5045 *tl++ = txdr_unsigned(stateidp->seqid); 5046 *tl++ = stateidp->other[0]; 5047 *tl++ = stateidp->other[1]; 5048 *tl++ = stateidp->other[2]; 5049 *tl++ = newnfs_true; 5050 if (lastbyte < off) 5051 lastbyte = off; 5052 else if (lastbyte >= (off + len)) 5053 lastbyte = off + len - 1; 5054 txdr_hyper(lastbyte, tl); 5055 tl += 2; 5056 *tl++ = newnfs_false; 5057 *tl++ = txdr_unsigned(layouttype); 5058 *tl = txdr_unsigned(layoutupdatecnt); 5059 if (layoutupdatecnt > 0) { 5060 KASSERT(layouttype != NFSLAYOUT_NFSV4_1_FILES, 5061 ("Must be nil for Files Layout")); 5062 outcnt = NFSM_RNDUP(layoutupdatecnt); 5063 NFSM_BUILD(cp, uint8_t *, outcnt); 5064 NFSBCOPY(layp, cp, layoutupdatecnt); 5065 cp += layoutupdatecnt; 5066 for (i = 0; i < (outcnt - layoutupdatecnt); i++) 5067 *cp++ = 0x0; 5068 } 5069 nd->nd_flag |= ND_USEGSSNAME; 5070 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 5071 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 5072 if (error != 0) 5073 return (error); 5074 error = nd->nd_repstat; 5075 mbuf_freem(nd->nd_mrep); 5076 return (error); 5077 } 5078 5079 /* 5080 * Do the NFSv4.1 LayoutReturn. 5081 */ 5082 int 5083 nfsrpc_layoutreturn(struct nfsmount *nmp, uint8_t *fh, int fhlen, int reclaim, 5084 int layouttype, uint32_t iomode, int layoutreturn, uint64_t offset, 5085 uint64_t len, nfsv4stateid_t *stateidp, int layoutcnt, uint32_t *layp, 5086 struct ucred *cred, NFSPROC_T *p, void *stuff) 5087 { 5088 uint32_t *tl; 5089 struct nfsrv_descript nfsd, *nd = &nfsd; 5090 int error, outcnt, i; 5091 uint8_t *cp; 5092 5093 nfscl_reqstart(nd, NFSPROC_LAYOUTRETURN, nmp, fh, fhlen, NULL, NULL); 5094 NFSM_BUILD(tl, uint32_t *, 4 * NFSX_UNSIGNED); 5095 if (reclaim != 0) 5096 *tl++ = newnfs_true; 5097 else 5098 *tl++ = newnfs_false; 5099 *tl++ = txdr_unsigned(layouttype); 5100 *tl++ = txdr_unsigned(iomode); 5101 *tl = txdr_unsigned(layoutreturn); 5102 if (layoutreturn == NFSLAYOUTRETURN_FILE) { 5103 NFSM_BUILD(tl, uint32_t *, 2 * NFSX_HYPER + NFSX_STATEID + 5104 NFSX_UNSIGNED); 5105 txdr_hyper(offset, tl); 5106 tl += 2; 5107 txdr_hyper(len, tl); 5108 tl += 2; 5109 NFSCL_DEBUG(4, "layoutret stseq=%d\n", (int)stateidp->seqid); 5110 *tl++ = txdr_unsigned(stateidp->seqid); 5111 *tl++ = stateidp->other[0]; 5112 *tl++ = stateidp->other[1]; 5113 *tl++ = stateidp->other[2]; 5114 *tl = txdr_unsigned(layoutcnt); 5115 if (layoutcnt > 0) { 5116 outcnt = NFSM_RNDUP(layoutcnt); 5117 NFSM_BUILD(cp, uint8_t *, outcnt); 5118 NFSBCOPY(layp, cp, layoutcnt); 5119 cp += layoutcnt; 5120 for (i = 0; i < (outcnt - layoutcnt); i++) 5121 *cp++ = 0x0; 5122 } 5123 } 5124 nd->nd_flag |= ND_USEGSSNAME; 5125 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 5126 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 5127 if (error != 0) 5128 return (error); 5129 if (nd->nd_repstat == 0) { 5130 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 5131 if (*tl != 0) { 5132 NFSM_DISSECT(tl, uint32_t *, NFSX_STATEID); 5133 stateidp->seqid = fxdr_unsigned(uint32_t, *tl++); 5134 stateidp->other[0] = *tl++; 5135 stateidp->other[1] = *tl++; 5136 stateidp->other[2] = *tl; 5137 } 5138 } else 5139 error = nd->nd_repstat; 5140 nfsmout: 5141 mbuf_freem(nd->nd_mrep); 5142 return (error); 5143 } 5144 5145 /* 5146 * Acquire a layout and devinfo, if possible. The caller must have acquired 5147 * a reference count on the nfsclclient structure before calling this. 5148 * Return the layout in lypp with a reference count on it, if successful. 5149 */ 5150 static int 5151 nfsrpc_getlayout(struct nfsmount *nmp, vnode_t vp, struct nfsfh *nfhp, 5152 int iomode, uint32_t *notifybitsp, nfsv4stateid_t *stateidp, uint64_t off, 5153 struct nfscllayout **lypp, struct ucred *cred, NFSPROC_T *p) 5154 { 5155 struct nfscllayout *lyp; 5156 struct nfsclflayout *flp, *tflp; 5157 struct nfscldevinfo *dip; 5158 struct nfsclflayouthead flh; 5159 int error = 0, islocked, layoutlen, recalled, retonclose; 5160 nfsv4stateid_t stateid; 5161 5162 *lypp = NULL; 5163 /* 5164 * If lyp is returned non-NULL, there will be a refcnt (shared lock) 5165 * on it, iff flp != NULL or a lock (exclusive lock) on it iff 5166 * flp == NULL. 5167 */ 5168 lyp = nfscl_getlayout(nmp->nm_clp, nfhp->nfh_fh, nfhp->nfh_len, 5169 off, &flp, &recalled); 5170 islocked = 0; 5171 if (lyp == NULL || flp == NULL) { 5172 if (recalled != 0) 5173 return (EIO); 5174 LIST_INIT(&flh); 5175 layoutlen = NFSMNT_MDSSESSION(nmp)->nfsess_maxcache - 5176 (NFSX_STATEID + 3 * NFSX_UNSIGNED); 5177 if (lyp == NULL) { 5178 stateid.seqid = 0; 5179 stateid.other[0] = stateidp->other[0]; 5180 stateid.other[1] = stateidp->other[1]; 5181 stateid.other[2] = stateidp->other[2]; 5182 error = nfsrpc_layoutget(nmp, nfhp->nfh_fh, 5183 nfhp->nfh_len, iomode, (uint64_t)0, INT64_MAX, 5184 (uint64_t)0, layoutlen, &stateid, &retonclose, 5185 &flh, cred, p, NULL); 5186 } else { 5187 islocked = 1; 5188 stateid.seqid = lyp->nfsly_stateid.seqid; 5189 stateid.other[0] = lyp->nfsly_stateid.other[0]; 5190 stateid.other[1] = lyp->nfsly_stateid.other[1]; 5191 stateid.other[2] = lyp->nfsly_stateid.other[2]; 5192 error = nfsrpc_layoutget(nmp, nfhp->nfh_fh, 5193 nfhp->nfh_len, iomode, off, INT64_MAX, 5194 (uint64_t)0, layoutlen, &stateid, &retonclose, 5195 &flh, cred, p, NULL); 5196 } 5197 if (error == 0) 5198 LIST_FOREACH(tflp, &flh, nfsfl_list) { 5199 error = nfscl_adddevinfo(nmp, NULL, tflp); 5200 if (error != 0) { 5201 error = nfsrpc_getdeviceinfo(nmp, 5202 tflp->nfsfl_dev, 5203 NFSLAYOUT_NFSV4_1_FILES, 5204 notifybitsp, &dip, cred, p); 5205 if (error != 0) 5206 break; 5207 error = nfscl_adddevinfo(nmp, dip, 5208 tflp); 5209 if (error != 0) 5210 printf( 5211 "getlayout: cannot add\n"); 5212 } 5213 } 5214 if (error == 0) { 5215 /* 5216 * nfscl_layout() always returns with the nfsly_lock 5217 * set to a refcnt (shared lock). 5218 */ 5219 error = nfscl_layout(nmp, vp, nfhp->nfh_fh, 5220 nfhp->nfh_len, &stateid, retonclose, &flh, &lyp, 5221 cred, p); 5222 if (error == 0) 5223 *lypp = lyp; 5224 } else if (islocked != 0) 5225 nfsv4_unlock(&lyp->nfsly_lock, 0); 5226 } else 5227 *lypp = lyp; 5228 return (error); 5229 } 5230 5231 /* 5232 * Do a TCP connection plus exchange id and create session. 5233 * If successful, a "struct nfsclds" is linked into the list for the 5234 * mount point and a pointer to it is returned. 5235 */ 5236 static int 5237 nfsrpc_fillsa(struct nfsmount *nmp, struct sockaddr_storage *ssp, 5238 struct nfsclds **dspp, NFSPROC_T *p) 5239 { 5240 struct sockaddr_in *msad, *sad, *ssd; 5241 struct sockaddr_in6 *msad6, *sad6, *ssd6; 5242 struct nfsclclient *clp; 5243 struct nfssockreq *nrp; 5244 struct nfsclds *dsp, *tdsp; 5245 int error; 5246 enum nfsclds_state retv; 5247 uint32_t sequenceid; 5248 5249 KASSERT(nmp->nm_sockreq.nr_cred != NULL, 5250 ("nfsrpc_fillsa: NULL nr_cred")); 5251 NFSLOCKCLSTATE(); 5252 clp = nmp->nm_clp; 5253 NFSUNLOCKCLSTATE(); 5254 if (clp == NULL) 5255 return (EPERM); 5256 if (ssp->ss_family == AF_INET) { 5257 ssd = (struct sockaddr_in *)ssp; 5258 NFSLOCKMNT(nmp); 5259 5260 /* 5261 * Check to see if we already have a session for this 5262 * address that is usable for a DS. 5263 * Note that the MDS's address is in a different place 5264 * than the sessions already acquired for DS's. 5265 */ 5266 msad = (struct sockaddr_in *)nmp->nm_sockreq.nr_nam; 5267 tdsp = TAILQ_FIRST(&nmp->nm_sess); 5268 while (tdsp != NULL) { 5269 if (msad != NULL && msad->sin_family == AF_INET && 5270 ssd->sin_addr.s_addr == msad->sin_addr.s_addr && 5271 ssd->sin_port == msad->sin_port && 5272 (tdsp->nfsclds_flags & NFSCLDS_DS) != 0) { 5273 *dspp = tdsp; 5274 NFSUNLOCKMNT(nmp); 5275 NFSCL_DEBUG(4, "fnd same addr\n"); 5276 return (0); 5277 } 5278 tdsp = TAILQ_NEXT(tdsp, nfsclds_list); 5279 if (tdsp != NULL && tdsp->nfsclds_sockp != NULL) 5280 msad = (struct sockaddr_in *) 5281 tdsp->nfsclds_sockp->nr_nam; 5282 else 5283 msad = NULL; 5284 } 5285 NFSUNLOCKMNT(nmp); 5286 5287 /* No IP address match, so look for new/trunked one. */ 5288 sad = malloc(sizeof(*sad), M_SONAME, M_WAITOK | M_ZERO); 5289 sad->sin_len = sizeof(*sad); 5290 sad->sin_family = AF_INET; 5291 sad->sin_port = ssd->sin_port; 5292 sad->sin_addr.s_addr = ssd->sin_addr.s_addr; 5293 nrp = malloc(sizeof(*nrp), M_NFSSOCKREQ, M_WAITOK | M_ZERO); 5294 nrp->nr_nam = (struct sockaddr *)sad; 5295 } else if (ssp->ss_family == AF_INET6) { 5296 ssd6 = (struct sockaddr_in6 *)ssp; 5297 NFSLOCKMNT(nmp); 5298 5299 /* 5300 * Check to see if we already have a session for this 5301 * address that is usable for a DS. 5302 * Note that the MDS's address is in a different place 5303 * than the sessions already acquired for DS's. 5304 */ 5305 msad6 = (struct sockaddr_in6 *)nmp->nm_sockreq.nr_nam; 5306 tdsp = TAILQ_FIRST(&nmp->nm_sess); 5307 while (tdsp != NULL) { 5308 if (msad6 != NULL && msad6->sin6_family == AF_INET6 && 5309 IN6_ARE_ADDR_EQUAL(&ssd6->sin6_addr, 5310 &msad6->sin6_addr) && 5311 ssd6->sin6_port == msad6->sin6_port && 5312 (tdsp->nfsclds_flags & NFSCLDS_DS) != 0) { 5313 *dspp = tdsp; 5314 NFSUNLOCKMNT(nmp); 5315 return (0); 5316 } 5317 tdsp = TAILQ_NEXT(tdsp, nfsclds_list); 5318 if (tdsp != NULL && tdsp->nfsclds_sockp != NULL) 5319 msad6 = (struct sockaddr_in6 *) 5320 tdsp->nfsclds_sockp->nr_nam; 5321 else 5322 msad6 = NULL; 5323 } 5324 NFSUNLOCKMNT(nmp); 5325 5326 /* No IP address match, so look for new/trunked one. */ 5327 sad6 = malloc(sizeof(*sad6), M_SONAME, M_WAITOK | M_ZERO); 5328 sad6->sin6_len = sizeof(*sad6); 5329 sad6->sin6_family = AF_INET6; 5330 sad6->sin6_port = ssd6->sin6_port; 5331 NFSBCOPY(&ssd6->sin6_addr, &sad6->sin6_addr, 5332 sizeof(struct in6_addr)); 5333 nrp = malloc(sizeof(*nrp), M_NFSSOCKREQ, M_WAITOK | M_ZERO); 5334 nrp->nr_nam = (struct sockaddr *)sad6; 5335 } else 5336 return (EPERM); 5337 5338 nrp->nr_sotype = SOCK_STREAM; 5339 mtx_init(&nrp->nr_mtx, "nfssock", NULL, MTX_DEF); 5340 nrp->nr_prog = NFS_PROG; 5341 nrp->nr_vers = NFS_VER4; 5342 5343 /* 5344 * Use the credentials that were used for the mount, which are 5345 * in nmp->nm_sockreq.nr_cred for newnfs_connect() etc. 5346 * Ref. counting the credentials with crhold() is probably not 5347 * necessary, since nm_sockreq.nr_cred won't be crfree()'d until 5348 * unmount, but I did it anyhow. 5349 */ 5350 nrp->nr_cred = crhold(nmp->nm_sockreq.nr_cred); 5351 error = newnfs_connect(nmp, nrp, NULL, p, 0); 5352 NFSCL_DEBUG(3, "DS connect=%d\n", error); 5353 5354 /* Now, do the exchangeid and create session. */ 5355 if (error == 0) 5356 error = nfsrpc_exchangeid(nmp, clp, nrp, NFSV4EXCH_USEPNFSDS, 5357 &dsp, nrp->nr_cred, p); 5358 NFSCL_DEBUG(3, "DS exchangeid=%d\n", error); 5359 if (error == 0) { 5360 dsp->nfsclds_sockp = nrp; 5361 NFSLOCKMNT(nmp); 5362 retv = nfscl_getsameserver(nmp, dsp, &tdsp); 5363 NFSCL_DEBUG(3, "getsame ret=%d\n", retv); 5364 if (retv == NFSDSP_USETHISSESSION) { 5365 NFSUNLOCKMNT(nmp); 5366 /* 5367 * If there is already a session for this server, 5368 * use it. 5369 */ 5370 (void)newnfs_disconnect(nrp); 5371 nfscl_freenfsclds(dsp); 5372 *dspp = tdsp; 5373 return (0); 5374 } 5375 if (retv == NFSDSP_SEQTHISSESSION) 5376 sequenceid = tdsp->nfsclds_sess.nfsess_sequenceid; 5377 else 5378 sequenceid = dsp->nfsclds_sess.nfsess_sequenceid; 5379 NFSUNLOCKMNT(nmp); 5380 error = nfsrpc_createsession(nmp, &dsp->nfsclds_sess, 5381 nrp, sequenceid, 0, nrp->nr_cred, p); 5382 NFSCL_DEBUG(3, "DS createsess=%d\n", error); 5383 } else { 5384 NFSFREECRED(nrp->nr_cred); 5385 NFSFREEMUTEX(&nrp->nr_mtx); 5386 free(nrp->nr_nam, M_SONAME); 5387 free(nrp, M_NFSSOCKREQ); 5388 } 5389 if (error == 0) { 5390 NFSCL_DEBUG(3, "add DS session\n"); 5391 /* 5392 * Put it at the end of the list. That way the list 5393 * is ordered by when the entry was added. This matters 5394 * since the one done first is the one that should be 5395 * used for sequencid'ing any subsequent create sessions. 5396 */ 5397 NFSLOCKMNT(nmp); 5398 TAILQ_INSERT_TAIL(&nmp->nm_sess, dsp, nfsclds_list); 5399 NFSUNLOCKMNT(nmp); 5400 *dspp = dsp; 5401 } else if (dsp != NULL) 5402 nfscl_freenfsclds(dsp); 5403 return (error); 5404 } 5405 5406 /* 5407 * Do the NFSv4.1 Reclaim Complete. 5408 */ 5409 int 5410 nfsrpc_reclaimcomplete(struct nfsmount *nmp, struct ucred *cred, NFSPROC_T *p) 5411 { 5412 uint32_t *tl; 5413 struct nfsrv_descript nfsd; 5414 struct nfsrv_descript *nd = &nfsd; 5415 int error; 5416 5417 nfscl_reqstart(nd, NFSPROC_RECLAIMCOMPL, nmp, NULL, 0, NULL, NULL); 5418 NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED); 5419 *tl = newnfs_false; 5420 nd->nd_flag |= ND_USEGSSNAME; 5421 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 5422 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 5423 if (error != 0) 5424 return (error); 5425 error = nd->nd_repstat; 5426 mbuf_freem(nd->nd_mrep); 5427 return (error); 5428 } 5429 5430 /* 5431 * Initialize the slot tables for a session. 5432 */ 5433 static void 5434 nfscl_initsessionslots(struct nfsclsession *sep) 5435 { 5436 int i; 5437 5438 for (i = 0; i < NFSV4_CBSLOTS; i++) { 5439 m_freem(sep->nfsess_cbslots[i].nfssl_reply); 5440 NFSBZERO(&sep->nfsess_cbslots[i], sizeof(struct nfsslot)); 5441 } 5442 for (i = 0; i < 64; i++) 5443 sep->nfsess_slotseq[i] = 0; 5444 sep->nfsess_slots = 0; 5445 } 5446 5447 /* 5448 * Called to try and do an I/O operation via an NFSv4.1 Data Server (DS). 5449 */ 5450 int 5451 nfscl_doiods(vnode_t vp, struct uio *uiop, int *iomode, int *must_commit, 5452 uint32_t rwaccess, struct ucred *cred, NFSPROC_T *p) 5453 { 5454 struct nfsnode *np = VTONFS(vp); 5455 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 5456 struct nfscllayout *layp; 5457 struct nfscldevinfo *dip; 5458 struct nfsclflayout *rflp; 5459 nfsv4stateid_t stateid; 5460 struct ucred *newcred; 5461 uint64_t lastbyte, len, off, oresid, xfer; 5462 int eof, error, iolaymode, recalled; 5463 void *lckp; 5464 5465 if (!NFSHASPNFS(nmp) || nfscl_enablecallb == 0 || nfs_numnfscbd == 0 || 5466 (np->n_flag & NNOLAYOUT) != 0) 5467 return (EIO); 5468 /* Now, get a reference cnt on the clientid for this mount. */ 5469 if (nfscl_getref(nmp) == 0) 5470 return (EIO); 5471 5472 /* Find an appropriate stateid. */ 5473 newcred = NFSNEWCRED(cred); 5474 error = nfscl_getstateid(vp, np->n_fhp->nfh_fh, np->n_fhp->nfh_len, 5475 rwaccess, 1, newcred, p, &stateid, &lckp); 5476 if (error != 0) { 5477 NFSFREECRED(newcred); 5478 nfscl_relref(nmp); 5479 return (error); 5480 } 5481 /* Search for a layout for this file. */ 5482 off = uiop->uio_offset; 5483 layp = nfscl_getlayout(nmp->nm_clp, np->n_fhp->nfh_fh, 5484 np->n_fhp->nfh_len, off, &rflp, &recalled); 5485 if (layp == NULL || rflp == NULL) { 5486 if (recalled != 0) { 5487 NFSFREECRED(newcred); 5488 nfscl_relref(nmp); 5489 return (EIO); 5490 } 5491 if (layp != NULL) { 5492 nfscl_rellayout(layp, (rflp == NULL) ? 1 : 0); 5493 layp = NULL; 5494 } 5495 /* Try and get a Layout, if it is supported. */ 5496 if (rwaccess == NFSV4OPEN_ACCESSWRITE || 5497 (np->n_flag & NWRITEOPENED) != 0) 5498 iolaymode = NFSLAYOUTIOMODE_RW; 5499 else 5500 iolaymode = NFSLAYOUTIOMODE_READ; 5501 error = nfsrpc_getlayout(nmp, vp, np->n_fhp, iolaymode, 5502 NULL, &stateid, off, &layp, newcred, p); 5503 if (error != 0) { 5504 NFSLOCKNODE(np); 5505 np->n_flag |= NNOLAYOUT; 5506 NFSUNLOCKNODE(np); 5507 if (lckp != NULL) 5508 nfscl_lockderef(lckp); 5509 NFSFREECRED(newcred); 5510 if (layp != NULL) 5511 nfscl_rellayout(layp, 0); 5512 nfscl_relref(nmp); 5513 return (error); 5514 } 5515 } 5516 5517 /* 5518 * Loop around finding a layout that works for the first part of 5519 * this I/O operation, and then call the function that actually 5520 * does the RPC. 5521 */ 5522 eof = 0; 5523 len = (uint64_t)uiop->uio_resid; 5524 while (len > 0 && error == 0 && eof == 0) { 5525 off = uiop->uio_offset; 5526 error = nfscl_findlayoutforio(layp, off, rwaccess, &rflp); 5527 if (error == 0) { 5528 oresid = xfer = (uint64_t)uiop->uio_resid; 5529 if (xfer > (rflp->nfsfl_end - rflp->nfsfl_off)) 5530 xfer = rflp->nfsfl_end - rflp->nfsfl_off; 5531 dip = nfscl_getdevinfo(nmp->nm_clp, rflp->nfsfl_dev, 5532 rflp->nfsfl_devp); 5533 if (dip != NULL) { 5534 error = nfscl_doflayoutio(vp, uiop, iomode, 5535 must_commit, &eof, &stateid, rwaccess, dip, 5536 layp, rflp, off, xfer, newcred, p); 5537 nfscl_reldevinfo(dip); 5538 lastbyte = off + xfer - 1; 5539 if (error == 0) { 5540 NFSLOCKCLSTATE(); 5541 if (lastbyte > layp->nfsly_lastbyte) 5542 layp->nfsly_lastbyte = lastbyte; 5543 NFSUNLOCKCLSTATE(); 5544 } 5545 } else 5546 error = EIO; 5547 if (error == 0) 5548 len -= (oresid - (uint64_t)uiop->uio_resid); 5549 } 5550 } 5551 if (lckp != NULL) 5552 nfscl_lockderef(lckp); 5553 NFSFREECRED(newcred); 5554 nfscl_rellayout(layp, 0); 5555 nfscl_relref(nmp); 5556 return (error); 5557 } 5558 5559 /* 5560 * Find a file layout that will handle the first bytes of the requested 5561 * range and return the information from it needed to to the I/O operation. 5562 */ 5563 int 5564 nfscl_findlayoutforio(struct nfscllayout *lyp, uint64_t off, uint32_t rwaccess, 5565 struct nfsclflayout **retflpp) 5566 { 5567 struct nfsclflayout *flp, *nflp, *rflp; 5568 uint32_t rw; 5569 5570 rflp = NULL; 5571 rw = rwaccess; 5572 /* For reading, do the Read list first and then the Write list. */ 5573 do { 5574 if (rw == NFSV4OPEN_ACCESSREAD) 5575 flp = LIST_FIRST(&lyp->nfsly_flayread); 5576 else 5577 flp = LIST_FIRST(&lyp->nfsly_flayrw); 5578 while (flp != NULL) { 5579 nflp = LIST_NEXT(flp, nfsfl_list); 5580 if (flp->nfsfl_off > off) 5581 break; 5582 if (flp->nfsfl_end > off && 5583 (rflp == NULL || rflp->nfsfl_end < flp->nfsfl_end)) 5584 rflp = flp; 5585 flp = nflp; 5586 } 5587 if (rw == NFSV4OPEN_ACCESSREAD) 5588 rw = NFSV4OPEN_ACCESSWRITE; 5589 else 5590 rw = 0; 5591 } while (rw != 0); 5592 if (rflp != NULL) { 5593 /* This one covers the most bytes starting at off. */ 5594 *retflpp = rflp; 5595 return (0); 5596 } 5597 return (EIO); 5598 } 5599 5600 /* 5601 * Do I/O using an NFSv4.1 file layout. 5602 */ 5603 static int 5604 nfscl_doflayoutio(vnode_t vp, struct uio *uiop, int *iomode, int *must_commit, 5605 int *eofp, nfsv4stateid_t *stateidp, int rwflag, struct nfscldevinfo *dp, 5606 struct nfscllayout *lyp, struct nfsclflayout *flp, uint64_t off, 5607 uint64_t len, struct ucred *cred, NFSPROC_T *p) 5608 { 5609 uint64_t io_off, rel_off, stripe_unit_size, transfer, xfer; 5610 int commit_thru_mds, error = 0, stripe_index, stripe_pos; 5611 struct nfsnode *np; 5612 struct nfsfh *fhp; 5613 struct nfsclds **dspp; 5614 5615 np = VTONFS(vp); 5616 rel_off = off - flp->nfsfl_patoff; 5617 stripe_unit_size = (flp->nfsfl_util >> 6) & 0x3ffffff; 5618 stripe_pos = (rel_off / stripe_unit_size + flp->nfsfl_stripe1) % 5619 dp->nfsdi_stripecnt; 5620 transfer = stripe_unit_size - (rel_off % stripe_unit_size); 5621 5622 /* Loop around, doing I/O for each stripe unit. */ 5623 while (len > 0 && error == 0) { 5624 stripe_index = nfsfldi_stripeindex(dp, stripe_pos); 5625 dspp = nfsfldi_addr(dp, stripe_index); 5626 if (len > transfer) 5627 xfer = transfer; 5628 else 5629 xfer = len; 5630 if ((flp->nfsfl_util & NFSFLAYUTIL_DENSE) != 0) { 5631 /* Dense layout. */ 5632 if (stripe_pos >= flp->nfsfl_fhcnt) 5633 return (EIO); 5634 fhp = flp->nfsfl_fh[stripe_pos]; 5635 io_off = (rel_off / (stripe_unit_size * 5636 dp->nfsdi_stripecnt)) * stripe_unit_size + 5637 rel_off % stripe_unit_size; 5638 } else { 5639 /* Sparse layout. */ 5640 if (flp->nfsfl_fhcnt > 1) { 5641 if (stripe_index >= flp->nfsfl_fhcnt) 5642 return (EIO); 5643 fhp = flp->nfsfl_fh[stripe_index]; 5644 } else if (flp->nfsfl_fhcnt == 1) 5645 fhp = flp->nfsfl_fh[0]; 5646 else 5647 fhp = np->n_fhp; 5648 io_off = off; 5649 } 5650 if ((flp->nfsfl_util & NFSFLAYUTIL_COMMIT_THRU_MDS) != 0) 5651 commit_thru_mds = 1; 5652 else 5653 commit_thru_mds = 0; 5654 if (rwflag == FREAD) 5655 error = nfsrpc_readds(vp, uiop, stateidp, eofp, *dspp, 5656 io_off, xfer, fhp, cred, p); 5657 else { 5658 error = nfsrpc_writeds(vp, uiop, iomode, must_commit, 5659 stateidp, *dspp, io_off, xfer, fhp, commit_thru_mds, 5660 cred, p); 5661 if (error == 0) { 5662 NFSLOCKCLSTATE(); 5663 lyp->nfsly_flags |= NFSLY_WRITTEN; 5664 NFSUNLOCKCLSTATE(); 5665 } 5666 } 5667 if (error == 0) { 5668 transfer = stripe_unit_size; 5669 stripe_pos = (stripe_pos + 1) % dp->nfsdi_stripecnt; 5670 len -= xfer; 5671 off += xfer; 5672 } 5673 } 5674 return (error); 5675 } 5676 5677 /* 5678 * The actual read RPC done to a DS. 5679 */ 5680 static int 5681 nfsrpc_readds(vnode_t vp, struct uio *uiop, nfsv4stateid_t *stateidp, int *eofp, 5682 struct nfsclds *dsp, uint64_t io_off, int len, struct nfsfh *fhp, 5683 struct ucred *cred, NFSPROC_T *p) 5684 { 5685 uint32_t *tl; 5686 int error, retlen; 5687 struct nfsrv_descript nfsd; 5688 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 5689 struct nfsrv_descript *nd = &nfsd; 5690 struct nfssockreq *nrp; 5691 5692 nd->nd_mrep = NULL; 5693 nfscl_reqstart(nd, NFSPROC_READDS, nmp, fhp->nfh_fh, fhp->nfh_len, 5694 NULL, &dsp->nfsclds_sess); 5695 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSEQIDZERO); 5696 NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED * 3); 5697 txdr_hyper(io_off, tl); 5698 *(tl + 2) = txdr_unsigned(len); 5699 nrp = dsp->nfsclds_sockp; 5700 if (nrp == NULL) 5701 /* If NULL, use the MDS socket. */ 5702 nrp = &nmp->nm_sockreq; 5703 error = newnfs_request(nd, nmp, NULL, nrp, vp, p, cred, 5704 NFS_PROG, NFS_VER4, NULL, 1, NULL, &dsp->nfsclds_sess); 5705 if (error != 0) 5706 return (error); 5707 if (nd->nd_repstat != 0) { 5708 error = nd->nd_repstat; 5709 goto nfsmout; 5710 } 5711 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 5712 *eofp = fxdr_unsigned(int, *tl); 5713 NFSM_STRSIZ(retlen, len); 5714 error = nfsm_mbufuio(nd, uiop, retlen); 5715 nfsmout: 5716 mbuf_freem(nd->nd_mrep); 5717 return (error); 5718 } 5719 5720 /* 5721 * The actual write RPC done to a DS. 5722 */ 5723 static int 5724 nfsrpc_writeds(vnode_t vp, struct uio *uiop, int *iomode, int *must_commit, 5725 nfsv4stateid_t *stateidp, struct nfsclds *dsp, uint64_t io_off, int len, 5726 struct nfsfh *fhp, int commit_thru_mds, struct ucred *cred, NFSPROC_T *p) 5727 { 5728 uint32_t *tl; 5729 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 5730 int error, rlen, commit, committed = NFSWRITE_FILESYNC; 5731 int32_t backup; 5732 struct nfsrv_descript nfsd; 5733 struct nfsrv_descript *nd = &nfsd; 5734 struct nfssockreq *nrp; 5735 5736 KASSERT(uiop->uio_iovcnt == 1, ("nfs: writerpc iovcnt > 1")); 5737 nd->nd_mrep = NULL; 5738 nfscl_reqstart(nd, NFSPROC_WRITEDS, nmp, fhp->nfh_fh, fhp->nfh_len, 5739 NULL, &dsp->nfsclds_sess); 5740 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSEQIDZERO); 5741 NFSM_BUILD(tl, uint32_t *, NFSX_HYPER + 2 * NFSX_UNSIGNED); 5742 txdr_hyper(io_off, tl); 5743 tl += 2; 5744 *tl++ = txdr_unsigned(*iomode); 5745 *tl = txdr_unsigned(len); 5746 nfsm_uiombuf(nd, uiop, 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 /* 5757 * In case the rpc gets retried, roll 5758 * the uio fileds changed by nfsm_uiombuf() 5759 * back. 5760 */ 5761 uiop->uio_offset -= len; 5762 uio_uio_resid_add(uiop, len); 5763 uio_iov_base_add(uiop, -len); 5764 uio_iov_len_add(uiop, len); 5765 error = nd->nd_repstat; 5766 } else { 5767 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED + NFSX_VERF); 5768 rlen = fxdr_unsigned(int, *tl++); 5769 if (rlen == 0) { 5770 error = NFSERR_IO; 5771 goto nfsmout; 5772 } else if (rlen < len) { 5773 backup = len - rlen; 5774 uio_iov_base_add(uiop, -(backup)); 5775 uio_iov_len_add(uiop, backup); 5776 uiop->uio_offset -= backup; 5777 uio_uio_resid_add(uiop, backup); 5778 len = rlen; 5779 } 5780 commit = fxdr_unsigned(int, *tl++); 5781 5782 /* 5783 * Return the lowest commitment level 5784 * obtained by any of the RPCs. 5785 */ 5786 if (committed == NFSWRITE_FILESYNC) 5787 committed = commit; 5788 else if (committed == NFSWRITE_DATASYNC && 5789 commit == NFSWRITE_UNSTABLE) 5790 committed = commit; 5791 if (commit_thru_mds != 0) { 5792 NFSLOCKMNT(nmp); 5793 if (!NFSHASWRITEVERF(nmp)) { 5794 NFSBCOPY(tl, nmp->nm_verf, NFSX_VERF); 5795 NFSSETWRITEVERF(nmp); 5796 } else if (NFSBCMP(tl, nmp->nm_verf, NFSX_VERF)) { 5797 *must_commit = 1; 5798 NFSBCOPY(tl, nmp->nm_verf, NFSX_VERF); 5799 } 5800 NFSUNLOCKMNT(nmp); 5801 } else { 5802 NFSLOCKDS(dsp); 5803 if ((dsp->nfsclds_flags & NFSCLDS_HASWRITEVERF) == 0) { 5804 NFSBCOPY(tl, dsp->nfsclds_verf, NFSX_VERF); 5805 dsp->nfsclds_flags |= NFSCLDS_HASWRITEVERF; 5806 } else if (NFSBCMP(tl, dsp->nfsclds_verf, NFSX_VERF)) { 5807 *must_commit = 1; 5808 NFSBCOPY(tl, dsp->nfsclds_verf, NFSX_VERF); 5809 } 5810 NFSUNLOCKDS(dsp); 5811 } 5812 } 5813 nfsmout: 5814 mbuf_freem(nd->nd_mrep); 5815 *iomode = committed; 5816 if (nd->nd_repstat != 0 && error == 0) 5817 error = nd->nd_repstat; 5818 return (error); 5819 } 5820 5821 /* 5822 * Free up the nfsclds structure. 5823 */ 5824 void 5825 nfscl_freenfsclds(struct nfsclds *dsp) 5826 { 5827 int i; 5828 5829 if (dsp == NULL) 5830 return; 5831 if (dsp->nfsclds_sockp != NULL) { 5832 NFSFREECRED(dsp->nfsclds_sockp->nr_cred); 5833 NFSFREEMUTEX(&dsp->nfsclds_sockp->nr_mtx); 5834 free(dsp->nfsclds_sockp->nr_nam, M_SONAME); 5835 free(dsp->nfsclds_sockp, M_NFSSOCKREQ); 5836 } 5837 NFSFREEMUTEX(&dsp->nfsclds_mtx); 5838 NFSFREEMUTEX(&dsp->nfsclds_sess.nfsess_mtx); 5839 for (i = 0; i < NFSV4_CBSLOTS; i++) { 5840 m_freem(dsp->nfsclds_sess.nfsess_cbslots[i].nfssl_reply); 5841 } 5842 free(dsp, M_NFSCLDS); 5843 } 5844 5845 static enum nfsclds_state 5846 nfscl_getsameserver(struct nfsmount *nmp, struct nfsclds *newdsp, 5847 struct nfsclds **retdspp) 5848 { 5849 struct nfsclds *dsp, *cur_dsp; 5850 5851 /* 5852 * Search the list of nfsclds structures for one with the same 5853 * server. 5854 */ 5855 cur_dsp = NULL; 5856 TAILQ_FOREACH(dsp, &nmp->nm_sess, nfsclds_list) { 5857 if (dsp->nfsclds_servownlen == newdsp->nfsclds_servownlen && 5858 dsp->nfsclds_servownlen != 0 && 5859 !NFSBCMP(dsp->nfsclds_serverown, newdsp->nfsclds_serverown, 5860 dsp->nfsclds_servownlen)) { 5861 NFSCL_DEBUG(4, "fnd same fdsp=%p dsp=%p flg=0x%x\n", 5862 TAILQ_FIRST(&nmp->nm_sess), dsp, 5863 dsp->nfsclds_flags); 5864 /* Server major id matches. */ 5865 if ((dsp->nfsclds_flags & NFSCLDS_DS) != 0) { 5866 *retdspp = dsp; 5867 return (NFSDSP_USETHISSESSION); 5868 } 5869 5870 /* 5871 * Note the first match, so it can be used for 5872 * sequence'ing new sessions. 5873 */ 5874 if (cur_dsp == NULL) 5875 cur_dsp = dsp; 5876 } 5877 } 5878 if (cur_dsp != NULL) { 5879 *retdspp = cur_dsp; 5880 return (NFSDSP_SEQTHISSESSION); 5881 } 5882 return (NFSDSP_NOTFOUND); 5883 } 5884 5885 #ifdef notyet 5886 /* 5887 * NFS commit rpc to a DS. 5888 */ 5889 static int 5890 nfsrpc_commitds(vnode_t vp, uint64_t offset, int cnt, struct nfsclds *dsp, 5891 struct nfsfh *fhp, struct ucred *cred, NFSPROC_T *p, void *stuff) 5892 { 5893 uint32_t *tl; 5894 struct nfsrv_descript nfsd, *nd = &nfsd; 5895 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 5896 struct nfssockreq *nrp; 5897 int error; 5898 5899 nfscl_reqstart(nd, NFSPROC_COMMITDS, nmp, fhp->nfh_fh, fhp->nfh_len, 5900 NULL, &dsp->nfsclds_sess); 5901 NFSM_BUILD(tl, uint32_t *, NFSX_HYPER + NFSX_UNSIGNED); 5902 txdr_hyper(offset, tl); 5903 tl += 2; 5904 *tl = txdr_unsigned(cnt); 5905 nrp = dsp->nfsclds_sockp; 5906 if (nrp == NULL) 5907 /* If NULL, use the MDS socket. */ 5908 nrp = &nmp->nm_sockreq; 5909 error = newnfs_request(nd, nmp, NULL, nrp, vp, p, cred, 5910 NFS_PROG, NFS_VER4, NULL, 1, NULL, &dsp->nfsclds_sess); 5911 if (error) 5912 return (error); 5913 if (nd->nd_repstat == 0) { 5914 NFSM_DISSECT(tl, u_int32_t *, NFSX_VERF); 5915 NFSLOCKDS(dsp); 5916 if (NFSBCMP(tl, dsp->nfsclds_verf, NFSX_VERF)) { 5917 NFSBCOPY(tl, dsp->nfsclds_verf, NFSX_VERF); 5918 error = NFSERR_STALEWRITEVERF; 5919 } 5920 NFSUNLOCKDS(dsp); 5921 } 5922 nfsmout: 5923 if (error == 0 && nd->nd_repstat != 0) 5924 error = nd->nd_repstat; 5925 mbuf_freem(nd->nd_mrep); 5926 return (error); 5927 } 5928 #endif 5929 5930
Indexes created Sat Sep 20 22:09:52 GMT 2025