nfs_clrpcops.c revision 1.1.1.1.12.1
1 /* $NetBSD: nfs_clrpcops.c,v 1.1.1.1.12.1 2016/12/05 10:55:25 skrll 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 1.1.1.1.12.1 2016/12/05 10:55:25 skrll 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 #include "opt_inet6.h" 49 50 #include <fs/nfs/nfsport.h> 51 #include <sys/sysctl.h> 52 53 SYSCTL_DECL(_vfs_nfs); 54 55 static int nfsignore_eexist = 0; 56 SYSCTL_INT(_vfs_nfs, OID_AUTO, ignore_eexist, CTLFLAG_RW, 57 &nfsignore_eexist, 0, "NFS ignore EEXIST replies for mkdir/symlink"); 58 59 /* 60 * Global variables 61 */ 62 extern int nfs_numnfscbd; 63 extern struct timeval nfsboottime; 64 extern u_int32_t newnfs_false, newnfs_true; 65 extern nfstype nfsv34_type[9]; 66 extern int nfsrv_useacl; 67 extern char nfsv4_callbackaddr[INET6_ADDRSTRLEN]; 68 extern int nfscl_debuglevel; 69 NFSCLSTATEMUTEX; 70 int nfstest_outofseq = 0; 71 int nfscl_assumeposixlocks = 1; 72 int nfscl_enablecallb = 0; 73 short nfsv4_cbport = NFSV4_CBPORT; 74 int nfstest_openallsetattr = 0; 75 #endif /* !APPLEKEXT */ 76 77 #define DIRHDSIZ (sizeof (struct dirent) - (MAXNAMLEN + 1)) 78 79 /* 80 * nfscl_getsameserver() can return one of three values: 81 * NFSDSP_USETHISSESSION - Use this session for the DS. 82 * NFSDSP_SEQTHISSESSION - Use the nfsclds_sequence field of this dsp for new 83 * session. 84 * NFSDSP_NOTFOUND - No matching server was found. 85 */ 86 enum nfsclds_state { 87 NFSDSP_USETHISSESSION = 0, 88 NFSDSP_SEQTHISSESSION = 1, 89 NFSDSP_NOTFOUND = 2, 90 }; 91 92 static int nfsrpc_setattrrpc(vnode_t , struct vattr *, nfsv4stateid_t *, 93 struct ucred *, NFSPROC_T *, struct nfsvattr *, int *, void *); 94 static int nfsrpc_readrpc(vnode_t , struct uio *, struct ucred *, 95 nfsv4stateid_t *, NFSPROC_T *, struct nfsvattr *, int *, void *); 96 static int nfsrpc_writerpc(vnode_t , struct uio *, int *, int *, 97 struct ucred *, nfsv4stateid_t *, NFSPROC_T *, struct nfsvattr *, int *, 98 void *); 99 static int nfsrpc_createv23(vnode_t , char *, int, struct vattr *, 100 nfsquad_t, int, struct ucred *, NFSPROC_T *, struct nfsvattr *, 101 struct nfsvattr *, struct nfsfh **, int *, int *, void *); 102 static int nfsrpc_createv4(vnode_t , char *, int, struct vattr *, 103 nfsquad_t, int, struct nfsclowner *, struct nfscldeleg **, struct ucred *, 104 NFSPROC_T *, struct nfsvattr *, struct nfsvattr *, struct nfsfh **, int *, 105 int *, void *, int *); 106 static int nfsrpc_locku(struct nfsrv_descript *, struct nfsmount *, 107 struct nfscllockowner *, u_int64_t, u_int64_t, 108 u_int32_t, struct ucred *, NFSPROC_T *, int); 109 static int nfsrpc_setaclrpc(vnode_t, struct ucred *, NFSPROC_T *, 110 struct acl *, nfsv4stateid_t *, void *); 111 static int nfsrpc_getlayout(struct nfsmount *, vnode_t, struct nfsfh *, int, 112 uint32_t *, nfsv4stateid_t *, uint64_t, struct nfscllayout **, 113 struct ucred *, NFSPROC_T *); 114 static int nfsrpc_fillsa(struct nfsmount *, struct sockaddr_storage *, 115 struct nfsclds **, NFSPROC_T *); 116 static void nfscl_initsessionslots(struct nfsclsession *); 117 static int nfscl_doflayoutio(vnode_t, struct uio *, int *, int *, int *, 118 nfsv4stateid_t *, int, struct nfscldevinfo *, struct nfscllayout *, 119 struct nfsclflayout *, uint64_t, uint64_t, struct ucred *, NFSPROC_T *); 120 static int nfsrpc_readds(vnode_t, struct uio *, nfsv4stateid_t *, int *, 121 struct nfsclds *, uint64_t, int, struct nfsfh *, struct ucred *, 122 NFSPROC_T *); 123 static int nfsrpc_writeds(vnode_t, struct uio *, int *, int *, 124 nfsv4stateid_t *, struct nfsclds *, uint64_t, int, 125 struct nfsfh *, int, struct ucred *, NFSPROC_T *); 126 static enum nfsclds_state nfscl_getsameserver(struct nfsmount *, 127 struct nfsclds *, struct nfsclds **); 128 #ifdef notyet 129 static int nfsrpc_commitds(vnode_t, uint64_t, int, struct nfsclds *, 130 struct nfsfh *, struct ucred *, NFSPROC_T *, void *); 131 #endif 132 133 /* 134 * nfs null call from vfs. 135 */ 136 APPLESTATIC int 137 nfsrpc_null(vnode_t vp, struct ucred *cred, NFSPROC_T *p) 138 { 139 int error; 140 struct nfsrv_descript nfsd, *nd = &nfsd; 141 142 NFSCL_REQSTART(nd, NFSPROC_NULL, vp); 143 error = nfscl_request(nd, vp, p, cred, NULL); 144 if (nd->nd_repstat && !error) 145 error = nd->nd_repstat; 146 mbuf_freem(nd->nd_mrep); 147 return (error); 148 } 149 150 /* 151 * nfs access rpc op. 152 * For nfs version 3 and 4, use the access rpc to check accessibility. If file 153 * modes are changed on the server, accesses might still fail later. 154 */ 155 APPLESTATIC int 156 nfsrpc_access(vnode_t vp, int acmode, struct ucred *cred, 157 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp) 158 { 159 int error; 160 u_int32_t mode, rmode; 161 162 if (acmode & VREAD) 163 mode = NFSACCESS_READ; 164 else 165 mode = 0; 166 if (vnode_vtype(vp) == VDIR) { 167 if (acmode & VWRITE) 168 mode |= (NFSACCESS_MODIFY | NFSACCESS_EXTEND | 169 NFSACCESS_DELETE); 170 if (acmode & VEXEC) 171 mode |= NFSACCESS_LOOKUP; 172 } else { 173 if (acmode & VWRITE) 174 mode |= (NFSACCESS_MODIFY | NFSACCESS_EXTEND); 175 if (acmode & VEXEC) 176 mode |= NFSACCESS_EXECUTE; 177 } 178 179 /* 180 * Now, just call nfsrpc_accessrpc() to do the actual RPC. 181 */ 182 error = nfsrpc_accessrpc(vp, mode, cred, p, nap, attrflagp, &rmode, 183 NULL); 184 185 /* 186 * The NFS V3 spec does not clarify whether or not 187 * the returned access bits can be a superset of 188 * the ones requested, so... 189 */ 190 if (!error && (rmode & mode) != mode) 191 error = EACCES; 192 return (error); 193 } 194 195 /* 196 * The actual rpc, separated out for Darwin. 197 */ 198 APPLESTATIC int 199 nfsrpc_accessrpc(vnode_t vp, u_int32_t mode, struct ucred *cred, 200 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, u_int32_t *rmodep, 201 void *stuff) 202 { 203 u_int32_t *tl; 204 u_int32_t supported, rmode; 205 int error; 206 struct nfsrv_descript nfsd, *nd = &nfsd; 207 nfsattrbit_t attrbits; 208 209 *attrflagp = 0; 210 supported = mode; 211 NFSCL_REQSTART(nd, NFSPROC_ACCESS, vp); 212 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 213 *tl = txdr_unsigned(mode); 214 if (nd->nd_flag & ND_NFSV4) { 215 /* 216 * And do a Getattr op. 217 */ 218 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 219 *tl = txdr_unsigned(NFSV4OP_GETATTR); 220 NFSGETATTR_ATTRBIT(&attrbits); 221 (void) nfsrv_putattrbit(nd, &attrbits); 222 } 223 error = nfscl_request(nd, vp, p, cred, stuff); 224 if (error) 225 return (error); 226 if (nd->nd_flag & ND_NFSV3) { 227 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 228 if (error) 229 goto nfsmout; 230 } 231 if (!nd->nd_repstat) { 232 if (nd->nd_flag & ND_NFSV4) { 233 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 234 supported = fxdr_unsigned(u_int32_t, *tl++); 235 } else { 236 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 237 } 238 rmode = fxdr_unsigned(u_int32_t, *tl); 239 if (nd->nd_flag & ND_NFSV4) 240 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 241 242 /* 243 * It's not obvious what should be done about 244 * unsupported access modes. For now, be paranoid 245 * and clear the unsupported ones. 246 */ 247 rmode &= supported; 248 *rmodep = rmode; 249 } else 250 error = nd->nd_repstat; 251 nfsmout: 252 mbuf_freem(nd->nd_mrep); 253 return (error); 254 } 255 256 /* 257 * nfs open rpc 258 */ 259 APPLESTATIC int 260 nfsrpc_open(vnode_t vp, int amode, struct ucred *cred, NFSPROC_T *p) 261 { 262 struct nfsclopen *op; 263 struct nfscldeleg *dp; 264 struct nfsfh *nfhp; 265 struct nfsnode *np = VTONFS(vp); 266 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 267 u_int32_t mode, clidrev; 268 int ret, newone, error, expireret = 0, retrycnt; 269 270 /* 271 * For NFSv4, Open Ops are only done on Regular Files. 272 */ 273 if (vnode_vtype(vp) != VREG) 274 return (0); 275 mode = 0; 276 if (amode & FREAD) 277 mode |= NFSV4OPEN_ACCESSREAD; 278 if (amode & FWRITE) 279 mode |= NFSV4OPEN_ACCESSWRITE; 280 nfhp = np->n_fhp; 281 282 retrycnt = 0; 283 #ifdef notdef 284 { char name[100]; int namel; 285 namel = (np->n_v4->n4_namelen < 100) ? np->n_v4->n4_namelen : 99; 286 bcopy(NFS4NODENAME(np->n_v4), name, namel); 287 name[namel] = '\0'; 288 printf("rpcopen p=0x%x name=%s",p->p_pid,name); 289 if (nfhp->nfh_len > 0) printf(" fh=0x%x\n",nfhp->nfh_fh[12]); 290 else printf(" fhl=0\n"); 291 } 292 #endif 293 do { 294 dp = NULL; 295 error = nfscl_open(vp, nfhp->nfh_fh, nfhp->nfh_len, mode, 1, 296 cred, p, NULL, &op, &newone, &ret, 1); 297 if (error) { 298 return (error); 299 } 300 if (nmp->nm_clp != NULL) 301 clidrev = nmp->nm_clp->nfsc_clientidrev; 302 else 303 clidrev = 0; 304 if (ret == NFSCLOPEN_DOOPEN) { 305 if (np->n_v4 != NULL) { 306 error = nfsrpc_openrpc(nmp, vp, np->n_v4->n4_data, 307 np->n_v4->n4_fhlen, np->n_fhp->nfh_fh, 308 np->n_fhp->nfh_len, mode, op, 309 NFS4NODENAME(np->n_v4), np->n_v4->n4_namelen, &dp, 310 0, 0x0, cred, p, 0, 0); 311 if (dp != NULL) { 312 #ifdef APPLE 313 OSBitAndAtomic((int32_t)~NDELEGMOD, (UInt32 *)&np->n_flag); 314 #else 315 NFSLOCKNODE(np); 316 np->n_flag &= ~NDELEGMOD; 317 /* 318 * Invalidate the attribute cache, so that 319 * attributes that pre-date the issue of a 320 * delegation are not cached, since the 321 * cached attributes will remain valid while 322 * the delegation is held. 323 */ 324 NFSINVALATTRCACHE(np); 325 NFSUNLOCKNODE(np); 326 #endif 327 (void) nfscl_deleg(nmp->nm_mountp, 328 op->nfso_own->nfsow_clp, 329 nfhp->nfh_fh, nfhp->nfh_len, cred, p, &dp); 330 } 331 } else { 332 error = EIO; 333 } 334 newnfs_copyincred(cred, &op->nfso_cred); 335 } else if (ret == NFSCLOPEN_SETCRED) 336 /* 337 * This is a new local open on a delegation. It needs 338 * to have credentials so that an open can be done 339 * against the server during recovery. 340 */ 341 newnfs_copyincred(cred, &op->nfso_cred); 342 343 /* 344 * nfso_opencnt is the count of how many VOP_OPEN()s have 345 * been done on this Open successfully and a VOP_CLOSE() 346 * is expected for each of these. 347 * If error is non-zero, don't increment it, since the Open 348 * hasn't succeeded yet. 349 */ 350 if (!error) 351 op->nfso_opencnt++; 352 nfscl_openrelease(op, error, newone); 353 if (error == NFSERR_GRACE || error == NFSERR_STALECLIENTID || 354 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 355 error == NFSERR_BADSESSION) { 356 (void) nfs_catnap(PZERO, error, "nfs_open"); 357 } else if ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) 358 && clidrev != 0) { 359 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p); 360 retrycnt++; 361 } 362 } while (error == NFSERR_GRACE || error == NFSERR_STALECLIENTID || 363 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 364 error == NFSERR_BADSESSION || 365 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) && 366 expireret == 0 && clidrev != 0 && retrycnt < 4)); 367 if (error && retrycnt >= 4) 368 error = EIO; 369 return (error); 370 } 371 372 /* 373 * the actual open rpc 374 */ 375 APPLESTATIC int 376 nfsrpc_openrpc(struct nfsmount *nmp, vnode_t vp, u_int8_t *nfhp, int fhlen, 377 u_int8_t *newfhp, int newfhlen, u_int32_t mode, struct nfsclopen *op, 378 u_int8_t *name, int namelen, struct nfscldeleg **dpp, 379 int reclaim, u_int32_t delegtype, struct ucred *cred, NFSPROC_T *p, 380 int syscred, int recursed) 381 { 382 u_int32_t *tl; 383 struct nfsrv_descript nfsd, *nd = &nfsd; 384 struct nfscldeleg *dp, *ndp = NULL; 385 struct nfsvattr nfsva; 386 u_int32_t rflags, deleg; 387 nfsattrbit_t attrbits; 388 int error, ret, acesize, limitby; 389 390 dp = *dpp; 391 *dpp = NULL; 392 nfscl_reqstart(nd, NFSPROC_OPEN, nmp, nfhp, fhlen, NULL, NULL); 393 NFSM_BUILD(tl, u_int32_t *, 5 * NFSX_UNSIGNED); 394 *tl++ = txdr_unsigned(op->nfso_own->nfsow_seqid); 395 *tl++ = txdr_unsigned(mode & NFSV4OPEN_ACCESSBOTH); 396 *tl++ = txdr_unsigned((mode >> NFSLCK_SHIFT) & NFSV4OPEN_DENYBOTH); 397 *tl++ = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[0]; 398 *tl = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[1]; 399 (void) nfsm_strtom(nd, op->nfso_own->nfsow_owner, NFSV4CL_LOCKNAMELEN); 400 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 401 *tl++ = txdr_unsigned(NFSV4OPEN_NOCREATE); 402 if (reclaim) { 403 *tl = txdr_unsigned(NFSV4OPEN_CLAIMPREVIOUS); 404 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 405 *tl = txdr_unsigned(delegtype); 406 } else { 407 if (dp != NULL) { 408 *tl = txdr_unsigned(NFSV4OPEN_CLAIMDELEGATECUR); 409 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID); 410 if (NFSHASNFSV4N(nmp)) 411 *tl++ = 0; 412 else 413 *tl++ = dp->nfsdl_stateid.seqid; 414 *tl++ = dp->nfsdl_stateid.other[0]; 415 *tl++ = dp->nfsdl_stateid.other[1]; 416 *tl = dp->nfsdl_stateid.other[2]; 417 } else { 418 *tl = txdr_unsigned(NFSV4OPEN_CLAIMNULL); 419 } 420 (void) nfsm_strtom(nd, name, namelen); 421 } 422 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 423 *tl = txdr_unsigned(NFSV4OP_GETATTR); 424 NFSZERO_ATTRBIT(&attrbits); 425 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_CHANGE); 426 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_TIMEMODIFY); 427 (void) nfsrv_putattrbit(nd, &attrbits); 428 if (syscred) 429 nd->nd_flag |= ND_USEGSSNAME; 430 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, vp, p, cred, 431 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 432 if (error) 433 return (error); 434 NFSCL_INCRSEQID(op->nfso_own->nfsow_seqid, nd); 435 if (!nd->nd_repstat) { 436 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID + 437 6 * NFSX_UNSIGNED); 438 op->nfso_stateid.seqid = *tl++; 439 op->nfso_stateid.other[0] = *tl++; 440 op->nfso_stateid.other[1] = *tl++; 441 op->nfso_stateid.other[2] = *tl; 442 rflags = fxdr_unsigned(u_int32_t, *(tl + 6)); 443 error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL); 444 if (error) 445 goto nfsmout; 446 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 447 deleg = fxdr_unsigned(u_int32_t, *tl); 448 if (deleg == NFSV4OPEN_DELEGATEREAD || 449 deleg == NFSV4OPEN_DELEGATEWRITE) { 450 if (!(op->nfso_own->nfsow_clp->nfsc_flags & 451 NFSCLFLAGS_FIRSTDELEG)) 452 op->nfso_own->nfsow_clp->nfsc_flags |= 453 (NFSCLFLAGS_FIRSTDELEG | NFSCLFLAGS_GOTDELEG); 454 MALLOC(ndp, struct nfscldeleg *, 455 sizeof (struct nfscldeleg) + newfhlen, 456 M_NFSCLDELEG, M_WAITOK); 457 LIST_INIT(&ndp->nfsdl_owner); 458 LIST_INIT(&ndp->nfsdl_lock); 459 ndp->nfsdl_clp = op->nfso_own->nfsow_clp; 460 ndp->nfsdl_fhlen = newfhlen; 461 NFSBCOPY(newfhp, ndp->nfsdl_fh, newfhlen); 462 newnfs_copyincred(cred, &ndp->nfsdl_cred); 463 nfscl_lockinit(&ndp->nfsdl_rwlock); 464 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID + 465 NFSX_UNSIGNED); 466 ndp->nfsdl_stateid.seqid = *tl++; 467 ndp->nfsdl_stateid.other[0] = *tl++; 468 ndp->nfsdl_stateid.other[1] = *tl++; 469 ndp->nfsdl_stateid.other[2] = *tl++; 470 ret = fxdr_unsigned(int, *tl); 471 if (deleg == NFSV4OPEN_DELEGATEWRITE) { 472 ndp->nfsdl_flags = NFSCLDL_WRITE; 473 /* 474 * Indicates how much the file can grow. 475 */ 476 NFSM_DISSECT(tl, u_int32_t *, 477 3 * NFSX_UNSIGNED); 478 limitby = fxdr_unsigned(int, *tl++); 479 switch (limitby) { 480 case NFSV4OPEN_LIMITSIZE: 481 ndp->nfsdl_sizelimit = fxdr_hyper(tl); 482 break; 483 case NFSV4OPEN_LIMITBLOCKS: 484 ndp->nfsdl_sizelimit = 485 fxdr_unsigned(u_int64_t, *tl++); 486 ndp->nfsdl_sizelimit *= 487 fxdr_unsigned(u_int64_t, *tl); 488 break; 489 default: 490 error = NFSERR_BADXDR; 491 goto nfsmout; 492 } 493 } else { 494 ndp->nfsdl_flags = NFSCLDL_READ; 495 } 496 if (ret) 497 ndp->nfsdl_flags |= NFSCLDL_RECALL; 498 error = nfsrv_dissectace(nd, &ndp->nfsdl_ace, &ret, 499 &acesize, p); 500 if (error) 501 goto nfsmout; 502 } else if (deleg != NFSV4OPEN_DELEGATENONE) { 503 error = NFSERR_BADXDR; 504 goto nfsmout; 505 } 506 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 507 error = nfsv4_loadattr(nd, NULL, &nfsva, NULL, 508 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0, 509 NULL, NULL, NULL, p, cred); 510 if (error) 511 goto nfsmout; 512 if (ndp != NULL) { 513 ndp->nfsdl_change = nfsva.na_filerev; 514 ndp->nfsdl_modtime = nfsva.na_mtime; 515 ndp->nfsdl_flags |= NFSCLDL_MODTIMESET; 516 } 517 if (!reclaim && (rflags & NFSV4OPEN_RESULTCONFIRM)) { 518 do { 519 ret = nfsrpc_openconfirm(vp, newfhp, newfhlen, op, 520 cred, p); 521 if (ret == NFSERR_DELAY) 522 (void) nfs_catnap(PZERO, ret, "nfs_open"); 523 } while (ret == NFSERR_DELAY); 524 error = ret; 525 } 526 if ((rflags & NFSV4OPEN_LOCKTYPEPOSIX) || 527 nfscl_assumeposixlocks) 528 op->nfso_posixlock = 1; 529 else 530 op->nfso_posixlock = 0; 531 532 /* 533 * If the server is handing out delegations, but we didn't 534 * get one because an OpenConfirm was required, try the 535 * Open again, to get a delegation. This is a harmless no-op, 536 * from a server's point of view. 537 */ 538 if (!reclaim && (rflags & NFSV4OPEN_RESULTCONFIRM) && 539 (op->nfso_own->nfsow_clp->nfsc_flags & NFSCLFLAGS_GOTDELEG) 540 && !error && dp == NULL && ndp == NULL && !recursed) { 541 do { 542 ret = nfsrpc_openrpc(nmp, vp, nfhp, fhlen, newfhp, 543 newfhlen, mode, op, name, namelen, &ndp, 0, 0x0, 544 cred, p, syscred, 1); 545 if (ret == NFSERR_DELAY) 546 (void) nfs_catnap(PZERO, ret, "nfs_open2"); 547 } while (ret == NFSERR_DELAY); 548 if (ret) { 549 if (ndp != NULL) { 550 FREE((caddr_t)ndp, M_NFSCLDELEG); 551 ndp = NULL; 552 } 553 if (ret == NFSERR_STALECLIENTID || 554 ret == NFSERR_STALEDONTRECOVER || 555 ret == NFSERR_BADSESSION) 556 error = ret; 557 } 558 } 559 } 560 if (nd->nd_repstat != 0 && error == 0) 561 error = nd->nd_repstat; 562 if (error == NFSERR_STALECLIENTID || error == NFSERR_BADSESSION) 563 nfscl_initiate_recovery(op->nfso_own->nfsow_clp); 564 nfsmout: 565 if (!error) 566 *dpp = ndp; 567 else if (ndp != NULL) 568 FREE((caddr_t)ndp, M_NFSCLDELEG); 569 mbuf_freem(nd->nd_mrep); 570 return (error); 571 } 572 573 /* 574 * open downgrade rpc 575 */ 576 APPLESTATIC int 577 nfsrpc_opendowngrade(vnode_t vp, u_int32_t mode, struct nfsclopen *op, 578 struct ucred *cred, NFSPROC_T *p) 579 { 580 u_int32_t *tl; 581 struct nfsrv_descript nfsd, *nd = &nfsd; 582 int error; 583 584 NFSCL_REQSTART(nd, NFSPROC_OPENDOWNGRADE, vp); 585 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID + 3 * NFSX_UNSIGNED); 586 if (NFSHASNFSV4N(VFSTONFS(vnode_mount(vp)))) 587 *tl++ = 0; 588 else 589 *tl++ = op->nfso_stateid.seqid; 590 *tl++ = op->nfso_stateid.other[0]; 591 *tl++ = op->nfso_stateid.other[1]; 592 *tl++ = op->nfso_stateid.other[2]; 593 *tl++ = txdr_unsigned(op->nfso_own->nfsow_seqid); 594 *tl++ = txdr_unsigned(mode & NFSV4OPEN_ACCESSBOTH); 595 *tl = txdr_unsigned((mode >> NFSLCK_SHIFT) & NFSV4OPEN_DENYBOTH); 596 error = nfscl_request(nd, vp, p, cred, NULL); 597 if (error) 598 return (error); 599 NFSCL_INCRSEQID(op->nfso_own->nfsow_seqid, nd); 600 if (!nd->nd_repstat) { 601 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID); 602 op->nfso_stateid.seqid = *tl++; 603 op->nfso_stateid.other[0] = *tl++; 604 op->nfso_stateid.other[1] = *tl++; 605 op->nfso_stateid.other[2] = *tl; 606 } 607 if (nd->nd_repstat && error == 0) 608 error = nd->nd_repstat; 609 if (error == NFSERR_STALESTATEID || error == NFSERR_BADSESSION) 610 nfscl_initiate_recovery(op->nfso_own->nfsow_clp); 611 nfsmout: 612 mbuf_freem(nd->nd_mrep); 613 return (error); 614 } 615 616 /* 617 * V4 Close operation. 618 */ 619 APPLESTATIC int 620 nfsrpc_close(vnode_t vp, int doclose, NFSPROC_T *p) 621 { 622 struct nfsclclient *clp; 623 int error; 624 625 if (vnode_vtype(vp) != VREG) 626 return (0); 627 if (doclose) 628 error = nfscl_doclose(vp, &clp, p); 629 else 630 error = nfscl_getclose(vp, &clp); 631 if (error) 632 return (error); 633 634 nfscl_clientrelease(clp); 635 return (0); 636 } 637 638 /* 639 * Close the open. 640 */ 641 APPLESTATIC void 642 nfsrpc_doclose(struct nfsmount *nmp, struct nfsclopen *op, NFSPROC_T *p) 643 { 644 struct nfsrv_descript nfsd, *nd = &nfsd; 645 struct nfscllockowner *lp, *nlp; 646 struct nfscllock *lop, *nlop; 647 struct ucred *tcred; 648 u_int64_t off = 0, len = 0; 649 u_int32_t type = NFSV4LOCKT_READ; 650 int error, do_unlock, trycnt; 651 652 tcred = newnfs_getcred(); 653 newnfs_copycred(&op->nfso_cred, tcred); 654 /* 655 * (Theoretically this could be done in the same 656 * compound as the close, but having multiple 657 * sequenced Ops in the same compound might be 658 * too scary for some servers.) 659 */ 660 if (op->nfso_posixlock) { 661 off = 0; 662 len = NFS64BITSSET; 663 type = NFSV4LOCKT_READ; 664 } 665 666 /* 667 * Since this function is only called from VOP_INACTIVE(), no 668 * other thread will be manipulating this Open. As such, the 669 * lock lists are not being changed by other threads, so it should 670 * be safe to do this without locking. 671 */ 672 LIST_FOREACH(lp, &op->nfso_lock, nfsl_list) { 673 do_unlock = 1; 674 LIST_FOREACH_SAFE(lop, &lp->nfsl_lock, nfslo_list, nlop) { 675 if (op->nfso_posixlock == 0) { 676 off = lop->nfslo_first; 677 len = lop->nfslo_end - lop->nfslo_first; 678 if (lop->nfslo_type == F_WRLCK) 679 type = NFSV4LOCKT_WRITE; 680 else 681 type = NFSV4LOCKT_READ; 682 } 683 if (do_unlock) { 684 trycnt = 0; 685 do { 686 error = nfsrpc_locku(nd, nmp, lp, off, 687 len, type, tcred, p, 0); 688 if ((nd->nd_repstat == NFSERR_GRACE || 689 nd->nd_repstat == NFSERR_DELAY) && 690 error == 0) 691 (void) nfs_catnap(PZERO, 692 (int)nd->nd_repstat, 693 "nfs_close"); 694 } while ((nd->nd_repstat == NFSERR_GRACE || 695 nd->nd_repstat == NFSERR_DELAY) && 696 error == 0 && trycnt++ < 5); 697 if (op->nfso_posixlock) 698 do_unlock = 0; 699 } 700 nfscl_freelock(lop, 0); 701 } 702 /* 703 * Do a ReleaseLockOwner. 704 * The lock owner name nfsl_owner may be used by other opens for 705 * other files but the lock_owner4 name that nfsrpc_rellockown() 706 * puts on the wire has the file handle for this file appended 707 * to it, so it can be done now. 708 */ 709 (void)nfsrpc_rellockown(nmp, lp, lp->nfsl_open->nfso_fh, 710 lp->nfsl_open->nfso_fhlen, tcred, p); 711 } 712 713 /* 714 * There could be other Opens for different files on the same 715 * OpenOwner, so locking is required. 716 */ 717 NFSLOCKCLSTATE(); 718 nfscl_lockexcl(&op->nfso_own->nfsow_rwlock, NFSCLSTATEMUTEXPTR); 719 NFSUNLOCKCLSTATE(); 720 do { 721 error = nfscl_tryclose(op, tcred, nmp, p); 722 if (error == NFSERR_GRACE) 723 (void) nfs_catnap(PZERO, error, "nfs_close"); 724 } while (error == NFSERR_GRACE); 725 NFSLOCKCLSTATE(); 726 nfscl_lockunlock(&op->nfso_own->nfsow_rwlock); 727 728 LIST_FOREACH_SAFE(lp, &op->nfso_lock, nfsl_list, nlp) 729 nfscl_freelockowner(lp, 0); 730 nfscl_freeopen(op, 0); 731 NFSUNLOCKCLSTATE(); 732 NFSFREECRED(tcred); 733 } 734 735 /* 736 * The actual Close RPC. 737 */ 738 APPLESTATIC int 739 nfsrpc_closerpc(struct nfsrv_descript *nd, struct nfsmount *nmp, 740 struct nfsclopen *op, struct ucred *cred, NFSPROC_T *p, 741 int syscred) 742 { 743 u_int32_t *tl; 744 int error; 745 746 nfscl_reqstart(nd, NFSPROC_CLOSE, nmp, op->nfso_fh, 747 op->nfso_fhlen, NULL, NULL); 748 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED + NFSX_STATEID); 749 *tl++ = txdr_unsigned(op->nfso_own->nfsow_seqid); 750 if (NFSHASNFSV4N(nmp)) 751 *tl++ = 0; 752 else 753 *tl++ = op->nfso_stateid.seqid; 754 *tl++ = op->nfso_stateid.other[0]; 755 *tl++ = op->nfso_stateid.other[1]; 756 *tl = op->nfso_stateid.other[2]; 757 if (syscred) 758 nd->nd_flag |= ND_USEGSSNAME; 759 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 760 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 761 if (error) 762 return (error); 763 NFSCL_INCRSEQID(op->nfso_own->nfsow_seqid, nd); 764 if (nd->nd_repstat == 0) 765 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID); 766 error = nd->nd_repstat; 767 if (error == NFSERR_STALESTATEID || error == NFSERR_BADSESSION) 768 nfscl_initiate_recovery(op->nfso_own->nfsow_clp); 769 nfsmout: 770 mbuf_freem(nd->nd_mrep); 771 return (error); 772 } 773 774 /* 775 * V4 Open Confirm RPC. 776 */ 777 APPLESTATIC int 778 nfsrpc_openconfirm(vnode_t vp, u_int8_t *nfhp, int fhlen, 779 struct nfsclopen *op, struct ucred *cred, NFSPROC_T *p) 780 { 781 u_int32_t *tl; 782 struct nfsrv_descript nfsd, *nd = &nfsd; 783 struct nfsmount *nmp; 784 int error; 785 786 nmp = VFSTONFS(vnode_mount(vp)); 787 if (NFSHASNFSV4N(nmp)) 788 return (0); /* No confirmation for NFSv4.1. */ 789 nfscl_reqstart(nd, NFSPROC_OPENCONFIRM, nmp, nfhp, fhlen, NULL, NULL); 790 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED + NFSX_STATEID); 791 *tl++ = op->nfso_stateid.seqid; 792 *tl++ = op->nfso_stateid.other[0]; 793 *tl++ = op->nfso_stateid.other[1]; 794 *tl++ = op->nfso_stateid.other[2]; 795 *tl = txdr_unsigned(op->nfso_own->nfsow_seqid); 796 error = nfscl_request(nd, vp, p, cred, NULL); 797 if (error) 798 return (error); 799 NFSCL_INCRSEQID(op->nfso_own->nfsow_seqid, nd); 800 if (!nd->nd_repstat) { 801 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID); 802 op->nfso_stateid.seqid = *tl++; 803 op->nfso_stateid.other[0] = *tl++; 804 op->nfso_stateid.other[1] = *tl++; 805 op->nfso_stateid.other[2] = *tl; 806 } 807 error = nd->nd_repstat; 808 if (error == NFSERR_STALESTATEID || error == NFSERR_BADSESSION) 809 nfscl_initiate_recovery(op->nfso_own->nfsow_clp); 810 nfsmout: 811 mbuf_freem(nd->nd_mrep); 812 return (error); 813 } 814 815 /* 816 * Do the setclientid and setclientid confirm RPCs. Called from nfs_statfs() 817 * when a mount has just occurred and when the server replies NFSERR_EXPIRED. 818 */ 819 APPLESTATIC int 820 nfsrpc_setclient(struct nfsmount *nmp, struct nfsclclient *clp, int reclaim, 821 struct ucred *cred, NFSPROC_T *p) 822 { 823 u_int32_t *tl; 824 struct nfsrv_descript nfsd; 825 struct nfsrv_descript *nd = &nfsd; 826 nfsattrbit_t attrbits; 827 u_int8_t *cp = NULL, *cp2, addr[INET6_ADDRSTRLEN + 9]; 828 u_short port; 829 int error, isinet6 = 0, callblen; 830 nfsquad_t confirm; 831 u_int32_t lease; 832 static u_int32_t rev = 0; 833 struct nfsclds *dsp, *ndsp, *tdsp; 834 struct in6_addr a6; 835 836 if (nfsboottime.tv_sec == 0) 837 NFSSETBOOTTIME(nfsboottime); 838 clp->nfsc_rev = rev++; 839 if (NFSHASNFSV4N(nmp)) { 840 error = nfsrpc_exchangeid(nmp, clp, &nmp->nm_sockreq, 841 NFSV4EXCH_USEPNFSMDS | NFSV4EXCH_USENONPNFS, &dsp, cred, p); 842 NFSCL_DEBUG(1, "aft exch=%d\n", error); 843 if (error == 0) { 844 error = nfsrpc_createsession(nmp, &dsp->nfsclds_sess, 845 &nmp->nm_sockreq, 846 dsp->nfsclds_sess.nfsess_sequenceid, 1, cred, p); 847 if (error == 0) { 848 NFSLOCKMNT(nmp); 849 TAILQ_FOREACH_SAFE(tdsp, &nmp->nm_sess, 850 nfsclds_list, ndsp) 851 nfscl_freenfsclds(tdsp); 852 TAILQ_INIT(&nmp->nm_sess); 853 TAILQ_INSERT_HEAD(&nmp->nm_sess, dsp, 854 nfsclds_list); 855 NFSUNLOCKMNT(nmp); 856 } else 857 nfscl_freenfsclds(dsp); 858 NFSCL_DEBUG(1, "aft createsess=%d\n", error); 859 } 860 if (error == 0 && reclaim == 0) { 861 error = nfsrpc_reclaimcomplete(nmp, cred, p); 862 NFSCL_DEBUG(1, "aft reclaimcomp=%d\n", error); 863 if (error == NFSERR_COMPLETEALREADY || 864 error == NFSERR_NOTSUPP) 865 /* Ignore this error. */ 866 error = 0; 867 } 868 return (error); 869 } 870 871 /* 872 * Allocate a single session structure for NFSv4.0, because some of 873 * the fields are used by NFSv4.0 although it doesn't do a session. 874 */ 875 dsp = malloc(sizeof(struct nfsclds), M_NFSCLDS, M_WAITOK | M_ZERO); 876 mtx_init(&dsp->nfsclds_mtx, "nfsds", NULL, MTX_DEF); 877 mtx_init(&dsp->nfsclds_sess.nfsess_mtx, "nfssession", NULL, MTX_DEF); 878 NFSLOCKMNT(nmp); 879 TAILQ_INSERT_HEAD(&nmp->nm_sess, dsp, nfsclds_list); 880 NFSUNLOCKMNT(nmp); 881 882 nfscl_reqstart(nd, NFSPROC_SETCLIENTID, nmp, NULL, 0, NULL, NULL); 883 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 884 *tl++ = txdr_unsigned(nfsboottime.tv_sec); 885 *tl = txdr_unsigned(clp->nfsc_rev); 886 (void) nfsm_strtom(nd, clp->nfsc_id, clp->nfsc_idlen); 887 888 /* 889 * set up the callback address 890 */ 891 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 892 *tl = txdr_unsigned(NFS_CALLBCKPROG); 893 callblen = strlen(nfsv4_callbackaddr); 894 if (callblen == 0) 895 cp = nfscl_getmyip(nmp, &a6, &isinet6); 896 if (nfscl_enablecallb && nfs_numnfscbd > 0 && 897 (callblen > 0 || cp != NULL)) { 898 port = htons(nfsv4_cbport); 899 cp2 = (u_int8_t *)&port; 900 #ifdef INET6 901 if ((callblen > 0 && 902 strchr(nfsv4_callbackaddr, ':')) || isinet6) { 903 char ip6buf[INET6_ADDRSTRLEN], *ip6add; 904 905 (void) nfsm_strtom(nd, "tcp6", 4); 906 if (callblen == 0) { 907 ip6_sprintf(ip6buf, (struct in6_addr *)cp); 908 ip6add = ip6buf; 909 } else { 910 ip6add = nfsv4_callbackaddr; 911 } 912 snprintf(addr, INET6_ADDRSTRLEN + 9, "%s.%d.%d", 913 ip6add, cp2[0], cp2[1]); 914 } else 915 #endif 916 { 917 (void) nfsm_strtom(nd, "tcp", 3); 918 if (callblen == 0) 919 snprintf(addr, INET6_ADDRSTRLEN + 9, 920 "%d.%d.%d.%d.%d.%d", cp[0], cp[1], 921 cp[2], cp[3], cp2[0], cp2[1]); 922 else 923 snprintf(addr, INET6_ADDRSTRLEN + 9, 924 "%s.%d.%d", nfsv4_callbackaddr, 925 cp2[0], cp2[1]); 926 } 927 (void) nfsm_strtom(nd, addr, strlen(addr)); 928 } else { 929 (void) nfsm_strtom(nd, "tcp", 3); 930 (void) nfsm_strtom(nd, "0.0.0.0.0.0", 11); 931 } 932 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 933 *tl = txdr_unsigned(clp->nfsc_cbident); 934 nd->nd_flag |= ND_USEGSSNAME; 935 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 936 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 937 if (error) 938 return (error); 939 if (nd->nd_repstat == 0) { 940 NFSM_DISSECT(tl, u_int32_t *, 4 * NFSX_UNSIGNED); 941 NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[0] = *tl++; 942 NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[1] = *tl++; 943 confirm.lval[0] = *tl++; 944 confirm.lval[1] = *tl; 945 mbuf_freem(nd->nd_mrep); 946 nd->nd_mrep = NULL; 947 948 /* 949 * and confirm it. 950 */ 951 nfscl_reqstart(nd, NFSPROC_SETCLIENTIDCFRM, nmp, NULL, 0, NULL, 952 NULL); 953 NFSM_BUILD(tl, u_int32_t *, 4 * NFSX_UNSIGNED); 954 *tl++ = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[0]; 955 *tl++ = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[1]; 956 *tl++ = confirm.lval[0]; 957 *tl = confirm.lval[1]; 958 nd->nd_flag |= ND_USEGSSNAME; 959 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, 960 cred, NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 961 if (error) 962 return (error); 963 mbuf_freem(nd->nd_mrep); 964 nd->nd_mrep = NULL; 965 if (nd->nd_repstat == 0) { 966 nfscl_reqstart(nd, NFSPROC_GETATTR, nmp, nmp->nm_fh, 967 nmp->nm_fhsize, NULL, NULL); 968 NFSZERO_ATTRBIT(&attrbits); 969 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_LEASETIME); 970 (void) nfsrv_putattrbit(nd, &attrbits); 971 nd->nd_flag |= ND_USEGSSNAME; 972 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, 973 cred, NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 974 if (error) 975 return (error); 976 if (nd->nd_repstat == 0) { 977 error = nfsv4_loadattr(nd, NULL, NULL, NULL, NULL, 0, NULL, 978 NULL, NULL, NULL, NULL, 0, NULL, &lease, NULL, p, cred); 979 if (error) 980 goto nfsmout; 981 clp->nfsc_renew = NFSCL_RENEW(lease); 982 clp->nfsc_expire = NFSD_MONOSEC + clp->nfsc_renew; 983 clp->nfsc_clientidrev++; 984 if (clp->nfsc_clientidrev == 0) 985 clp->nfsc_clientidrev++; 986 } 987 } 988 } 989 error = nd->nd_repstat; 990 nfsmout: 991 mbuf_freem(nd->nd_mrep); 992 return (error); 993 } 994 995 /* 996 * nfs getattr call. 997 */ 998 APPLESTATIC int 999 nfsrpc_getattr(vnode_t vp, struct ucred *cred, NFSPROC_T *p, 1000 struct nfsvattr *nap, void *stuff) 1001 { 1002 struct nfsrv_descript nfsd, *nd = &nfsd; 1003 int error; 1004 nfsattrbit_t attrbits; 1005 1006 NFSCL_REQSTART(nd, NFSPROC_GETATTR, vp); 1007 if (nd->nd_flag & ND_NFSV4) { 1008 NFSGETATTR_ATTRBIT(&attrbits); 1009 (void) nfsrv_putattrbit(nd, &attrbits); 1010 } 1011 error = nfscl_request(nd, vp, p, cred, stuff); 1012 if (error) 1013 return (error); 1014 if (!nd->nd_repstat) 1015 error = nfsm_loadattr(nd, nap); 1016 else 1017 error = nd->nd_repstat; 1018 mbuf_freem(nd->nd_mrep); 1019 return (error); 1020 } 1021 1022 /* 1023 * nfs getattr call with non-vnode arguemnts. 1024 */ 1025 APPLESTATIC int 1026 nfsrpc_getattrnovp(struct nfsmount *nmp, u_int8_t *fhp, int fhlen, int syscred, 1027 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, u_int64_t *xidp, 1028 uint32_t *leasep) 1029 { 1030 struct nfsrv_descript nfsd, *nd = &nfsd; 1031 int error, vers = NFS_VER2; 1032 nfsattrbit_t attrbits; 1033 1034 nfscl_reqstart(nd, NFSPROC_GETATTR, nmp, fhp, fhlen, NULL, NULL); 1035 if (nd->nd_flag & ND_NFSV4) { 1036 vers = NFS_VER4; 1037 NFSGETATTR_ATTRBIT(&attrbits); 1038 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_LEASETIME); 1039 (void) nfsrv_putattrbit(nd, &attrbits); 1040 } else if (nd->nd_flag & ND_NFSV3) { 1041 vers = NFS_VER3; 1042 } 1043 if (syscred) 1044 nd->nd_flag |= ND_USEGSSNAME; 1045 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 1046 NFS_PROG, vers, NULL, 1, xidp, NULL); 1047 if (error) 1048 return (error); 1049 if (nd->nd_repstat == 0) { 1050 if ((nd->nd_flag & ND_NFSV4) != 0) 1051 error = nfsv4_loadattr(nd, NULL, nap, NULL, NULL, 0, 1052 NULL, NULL, NULL, NULL, NULL, 0, NULL, leasep, NULL, 1053 NULL, NULL); 1054 else 1055 error = nfsm_loadattr(nd, nap); 1056 } else 1057 error = nd->nd_repstat; 1058 mbuf_freem(nd->nd_mrep); 1059 return (error); 1060 } 1061 1062 /* 1063 * Do an nfs setattr operation. 1064 */ 1065 APPLESTATIC int 1066 nfsrpc_setattr(vnode_t vp, struct vattr *vap, NFSACL_T *aclp, 1067 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *rnap, int *attrflagp, 1068 void *stuff) 1069 { 1070 int error, expireret = 0, openerr, retrycnt; 1071 u_int32_t clidrev = 0, mode; 1072 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 1073 struct nfsfh *nfhp; 1074 nfsv4stateid_t stateid; 1075 void *lckp; 1076 1077 if (nmp->nm_clp != NULL) 1078 clidrev = nmp->nm_clp->nfsc_clientidrev; 1079 if (vap != NULL && NFSATTRISSET(u_quad_t, vap, va_size)) 1080 mode = NFSV4OPEN_ACCESSWRITE; 1081 else 1082 mode = NFSV4OPEN_ACCESSREAD; 1083 retrycnt = 0; 1084 do { 1085 lckp = NULL; 1086 openerr = 1; 1087 if (NFSHASNFSV4(nmp)) { 1088 nfhp = VTONFS(vp)->n_fhp; 1089 error = nfscl_getstateid(vp, nfhp->nfh_fh, 1090 nfhp->nfh_len, mode, 0, cred, p, &stateid, &lckp); 1091 if (error && vnode_vtype(vp) == VREG && 1092 (mode == NFSV4OPEN_ACCESSWRITE || 1093 nfstest_openallsetattr)) { 1094 /* 1095 * No Open stateid, so try and open the file 1096 * now. 1097 */ 1098 if (mode == NFSV4OPEN_ACCESSWRITE) 1099 openerr = nfsrpc_open(vp, FWRITE, cred, 1100 p); 1101 else 1102 openerr = nfsrpc_open(vp, FREAD, cred, 1103 p); 1104 if (!openerr) 1105 (void) nfscl_getstateid(vp, 1106 nfhp->nfh_fh, nfhp->nfh_len, 1107 mode, 0, cred, p, &stateid, &lckp); 1108 } 1109 } 1110 if (vap != NULL) 1111 error = nfsrpc_setattrrpc(vp, vap, &stateid, cred, p, 1112 rnap, attrflagp, stuff); 1113 else 1114 error = nfsrpc_setaclrpc(vp, cred, p, aclp, &stateid, 1115 stuff); 1116 if (error == NFSERR_STALESTATEID || error == NFSERR_BADSESSION) 1117 nfscl_initiate_recovery(nmp->nm_clp); 1118 if (lckp != NULL) 1119 nfscl_lockderef(lckp); 1120 if (!openerr) 1121 (void) nfsrpc_close(vp, 0, p); 1122 if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 1123 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 1124 error == NFSERR_OLDSTATEID || error == NFSERR_BADSESSION) { 1125 (void) nfs_catnap(PZERO, error, "nfs_setattr"); 1126 } else if ((error == NFSERR_EXPIRED || 1127 error == NFSERR_BADSTATEID) && clidrev != 0) { 1128 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p); 1129 } 1130 retrycnt++; 1131 } while (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 1132 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 1133 error == NFSERR_BADSESSION || 1134 (error == NFSERR_OLDSTATEID && retrycnt < 20) || 1135 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) && 1136 expireret == 0 && clidrev != 0 && retrycnt < 4)); 1137 if (error && retrycnt >= 4) 1138 error = EIO; 1139 return (error); 1140 } 1141 1142 static int 1143 nfsrpc_setattrrpc(vnode_t vp, struct vattr *vap, 1144 nfsv4stateid_t *stateidp, struct ucred *cred, NFSPROC_T *p, 1145 struct nfsvattr *rnap, int *attrflagp, void *stuff) 1146 { 1147 u_int32_t *tl; 1148 struct nfsrv_descript nfsd, *nd = &nfsd; 1149 int error; 1150 nfsattrbit_t attrbits; 1151 1152 *attrflagp = 0; 1153 NFSCL_REQSTART(nd, NFSPROC_SETATTR, vp); 1154 if (nd->nd_flag & ND_NFSV4) 1155 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID); 1156 vap->va_type = vnode_vtype(vp); 1157 nfscl_fillsattr(nd, vap, vp, NFSSATTR_FULL, 0); 1158 if (nd->nd_flag & ND_NFSV3) { 1159 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1160 *tl = newnfs_false; 1161 } else if (nd->nd_flag & ND_NFSV4) { 1162 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1163 *tl = txdr_unsigned(NFSV4OP_GETATTR); 1164 NFSGETATTR_ATTRBIT(&attrbits); 1165 (void) nfsrv_putattrbit(nd, &attrbits); 1166 } 1167 error = nfscl_request(nd, vp, p, cred, stuff); 1168 if (error) 1169 return (error); 1170 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) 1171 error = nfscl_wcc_data(nd, vp, rnap, attrflagp, NULL, stuff); 1172 if ((nd->nd_flag & ND_NFSV4) && !error) 1173 error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL); 1174 if (!(nd->nd_flag & ND_NFSV3) && !nd->nd_repstat && !error) 1175 error = nfscl_postop_attr(nd, rnap, attrflagp, stuff); 1176 mbuf_freem(nd->nd_mrep); 1177 if (nd->nd_repstat && !error) 1178 error = nd->nd_repstat; 1179 return (error); 1180 } 1181 1182 /* 1183 * nfs lookup rpc 1184 */ 1185 APPLESTATIC int 1186 nfsrpc_lookup(vnode_t dvp, char *name, int len, struct ucred *cred, 1187 NFSPROC_T *p, struct nfsvattr *dnap, struct nfsvattr *nap, 1188 struct nfsfh **nfhpp, int *attrflagp, int *dattrflagp, void *stuff) 1189 { 1190 u_int32_t *tl; 1191 struct nfsrv_descript nfsd, *nd = &nfsd; 1192 struct nfsmount *nmp; 1193 struct nfsnode *np; 1194 struct nfsfh *nfhp; 1195 nfsattrbit_t attrbits; 1196 int error = 0, lookupp = 0; 1197 1198 *attrflagp = 0; 1199 *dattrflagp = 0; 1200 if (vnode_vtype(dvp) != VDIR) 1201 return (ENOTDIR); 1202 nmp = VFSTONFS(vnode_mount(dvp)); 1203 if (len > NFS_MAXNAMLEN) 1204 return (ENAMETOOLONG); 1205 if (NFSHASNFSV4(nmp) && len == 1 && 1206 name[0] == '.') { 1207 /* 1208 * Just return the current dir's fh. 1209 */ 1210 np = VTONFS(dvp); 1211 MALLOC(nfhp, struct nfsfh *, sizeof (struct nfsfh) + 1212 np->n_fhp->nfh_len, M_NFSFH, M_WAITOK); 1213 nfhp->nfh_len = np->n_fhp->nfh_len; 1214 NFSBCOPY(np->n_fhp->nfh_fh, nfhp->nfh_fh, nfhp->nfh_len); 1215 *nfhpp = nfhp; 1216 return (0); 1217 } 1218 if (NFSHASNFSV4(nmp) && len == 2 && 1219 name[0] == '.' && name[1] == '.') { 1220 lookupp = 1; 1221 NFSCL_REQSTART(nd, NFSPROC_LOOKUPP, dvp); 1222 } else { 1223 NFSCL_REQSTART(nd, NFSPROC_LOOKUP, dvp); 1224 (void) nfsm_strtom(nd, name, len); 1225 } 1226 if (nd->nd_flag & ND_NFSV4) { 1227 NFSGETATTR_ATTRBIT(&attrbits); 1228 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1229 *tl++ = txdr_unsigned(NFSV4OP_GETFH); 1230 *tl = txdr_unsigned(NFSV4OP_GETATTR); 1231 (void) nfsrv_putattrbit(nd, &attrbits); 1232 } 1233 error = nfscl_request(nd, dvp, p, cred, stuff); 1234 if (error) 1235 return (error); 1236 if (nd->nd_repstat) { 1237 /* 1238 * When an NFSv4 Lookupp returns ENOENT, it means that 1239 * the lookup is at the root of an fs, so return this dir. 1240 */ 1241 if (nd->nd_repstat == NFSERR_NOENT && lookupp) { 1242 np = VTONFS(dvp); 1243 MALLOC(nfhp, struct nfsfh *, sizeof (struct nfsfh) + 1244 np->n_fhp->nfh_len, M_NFSFH, M_WAITOK); 1245 nfhp->nfh_len = np->n_fhp->nfh_len; 1246 NFSBCOPY(np->n_fhp->nfh_fh, nfhp->nfh_fh, nfhp->nfh_len); 1247 *nfhpp = nfhp; 1248 mbuf_freem(nd->nd_mrep); 1249 return (0); 1250 } 1251 if (nd->nd_flag & ND_NFSV3) 1252 error = nfscl_postop_attr(nd, dnap, dattrflagp, stuff); 1253 else if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == 1254 ND_NFSV4) { 1255 /* Load the directory attributes. */ 1256 error = nfsm_loadattr(nd, dnap); 1257 if (error == 0) 1258 *dattrflagp = 1; 1259 } 1260 goto nfsmout; 1261 } 1262 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == ND_NFSV4) { 1263 /* Load the directory attributes. */ 1264 error = nfsm_loadattr(nd, dnap); 1265 if (error != 0) 1266 goto nfsmout; 1267 *dattrflagp = 1; 1268 /* Skip over the Lookup and GetFH operation status values. */ 1269 NFSM_DISSECT(tl, u_int32_t *, 4 * NFSX_UNSIGNED); 1270 } 1271 error = nfsm_getfh(nd, nfhpp); 1272 if (error) 1273 goto nfsmout; 1274 1275 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 1276 if ((nd->nd_flag & ND_NFSV3) && !error) 1277 error = nfscl_postop_attr(nd, dnap, dattrflagp, stuff); 1278 nfsmout: 1279 mbuf_freem(nd->nd_mrep); 1280 if (!error && nd->nd_repstat) 1281 error = nd->nd_repstat; 1282 return (error); 1283 } 1284 1285 /* 1286 * Do a readlink rpc. 1287 */ 1288 APPLESTATIC int 1289 nfsrpc_readlink(vnode_t vp, struct uio *uiop, struct ucred *cred, 1290 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff) 1291 { 1292 u_int32_t *tl; 1293 struct nfsrv_descript nfsd, *nd = &nfsd; 1294 struct nfsnode *np = VTONFS(vp); 1295 nfsattrbit_t attrbits; 1296 int error, len, cangetattr = 1; 1297 1298 *attrflagp = 0; 1299 NFSCL_REQSTART(nd, NFSPROC_READLINK, vp); 1300 if (nd->nd_flag & ND_NFSV4) { 1301 /* 1302 * And do a Getattr op. 1303 */ 1304 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1305 *tl = txdr_unsigned(NFSV4OP_GETATTR); 1306 NFSGETATTR_ATTRBIT(&attrbits); 1307 (void) nfsrv_putattrbit(nd, &attrbits); 1308 } 1309 error = nfscl_request(nd, vp, p, cred, stuff); 1310 if (error) 1311 return (error); 1312 if (nd->nd_flag & ND_NFSV3) 1313 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 1314 if (!nd->nd_repstat && !error) { 1315 NFSM_STRSIZ(len, NFS_MAXPATHLEN); 1316 /* 1317 * This seems weird to me, but must have been added to 1318 * FreeBSD for some reason. The only thing I can think of 1319 * is that there was/is some server that replies with 1320 * more link data than it should? 1321 */ 1322 if (len == NFS_MAXPATHLEN) { 1323 NFSLOCKNODE(np); 1324 if (np->n_size > 0 && np->n_size < NFS_MAXPATHLEN) { 1325 len = np->n_size; 1326 cangetattr = 0; 1327 } 1328 NFSUNLOCKNODE(np); 1329 } 1330 error = nfsm_mbufuio(nd, uiop, len); 1331 if ((nd->nd_flag & ND_NFSV4) && !error && cangetattr) 1332 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 1333 } 1334 if (nd->nd_repstat && !error) 1335 error = nd->nd_repstat; 1336 nfsmout: 1337 mbuf_freem(nd->nd_mrep); 1338 return (error); 1339 } 1340 1341 /* 1342 * Read operation. 1343 */ 1344 APPLESTATIC int 1345 nfsrpc_read(vnode_t vp, struct uio *uiop, struct ucred *cred, 1346 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff) 1347 { 1348 int error, expireret = 0, retrycnt; 1349 u_int32_t clidrev = 0; 1350 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 1351 struct nfsnode *np = VTONFS(vp); 1352 struct ucred *newcred; 1353 struct nfsfh *nfhp = NULL; 1354 nfsv4stateid_t stateid; 1355 void *lckp; 1356 1357 if (nmp->nm_clp != NULL) 1358 clidrev = nmp->nm_clp->nfsc_clientidrev; 1359 newcred = cred; 1360 if (NFSHASNFSV4(nmp)) { 1361 nfhp = np->n_fhp; 1362 newcred = NFSNEWCRED(cred); 1363 } 1364 retrycnt = 0; 1365 do { 1366 lckp = NULL; 1367 if (NFSHASNFSV4(nmp)) 1368 (void)nfscl_getstateid(vp, nfhp->nfh_fh, nfhp->nfh_len, 1369 NFSV4OPEN_ACCESSREAD, 0, newcred, p, &stateid, 1370 &lckp); 1371 error = nfsrpc_readrpc(vp, uiop, newcred, &stateid, p, nap, 1372 attrflagp, stuff); 1373 if (error == NFSERR_STALESTATEID || error == NFSERR_BADSESSION) 1374 nfscl_initiate_recovery(nmp->nm_clp); 1375 if (lckp != NULL) 1376 nfscl_lockderef(lckp); 1377 if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 1378 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 1379 error == NFSERR_OLDSTATEID || error == NFSERR_BADSESSION) { 1380 (void) nfs_catnap(PZERO, error, "nfs_read"); 1381 } else if ((error == NFSERR_EXPIRED || 1382 error == NFSERR_BADSTATEID) && clidrev != 0) { 1383 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p); 1384 } 1385 retrycnt++; 1386 } while (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 1387 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 1388 error == NFSERR_BADSESSION || 1389 (error == NFSERR_OLDSTATEID && retrycnt < 20) || 1390 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) && 1391 expireret == 0 && clidrev != 0 && retrycnt < 4)); 1392 if (error && retrycnt >= 4) 1393 error = EIO; 1394 if (NFSHASNFSV4(nmp)) 1395 NFSFREECRED(newcred); 1396 return (error); 1397 } 1398 1399 /* 1400 * The actual read RPC. 1401 */ 1402 static int 1403 nfsrpc_readrpc(vnode_t vp, struct uio *uiop, struct ucred *cred, 1404 nfsv4stateid_t *stateidp, NFSPROC_T *p, struct nfsvattr *nap, 1405 int *attrflagp, void *stuff) 1406 { 1407 u_int32_t *tl; 1408 int error = 0, len, retlen, tsiz, eof = 0; 1409 struct nfsrv_descript nfsd; 1410 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 1411 struct nfsrv_descript *nd = &nfsd; 1412 int rsize; 1413 off_t tmp_off; 1414 1415 *attrflagp = 0; 1416 tsiz = uio_uio_resid(uiop); 1417 tmp_off = uiop->uio_offset + tsiz; 1418 NFSLOCKMNT(nmp); 1419 if (tmp_off > nmp->nm_maxfilesize || tmp_off < uiop->uio_offset) { 1420 NFSUNLOCKMNT(nmp); 1421 return (EFBIG); 1422 } 1423 rsize = nmp->nm_rsize; 1424 NFSUNLOCKMNT(nmp); 1425 nd->nd_mrep = NULL; 1426 while (tsiz > 0) { 1427 *attrflagp = 0; 1428 len = (tsiz > rsize) ? rsize : tsiz; 1429 NFSCL_REQSTART(nd, NFSPROC_READ, vp); 1430 if (nd->nd_flag & ND_NFSV4) 1431 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID); 1432 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED * 3); 1433 if (nd->nd_flag & ND_NFSV2) { 1434 *tl++ = txdr_unsigned(uiop->uio_offset); 1435 *tl++ = txdr_unsigned(len); 1436 *tl = 0; 1437 } else { 1438 txdr_hyper(uiop->uio_offset, tl); 1439 *(tl + 2) = txdr_unsigned(len); 1440 } 1441 /* 1442 * Since I can't do a Getattr for NFSv4 for Write, there 1443 * doesn't seem any point in doing one here, either. 1444 * (See the comment in nfsrpc_writerpc() for more info.) 1445 */ 1446 error = nfscl_request(nd, vp, p, cred, stuff); 1447 if (error) 1448 return (error); 1449 if (nd->nd_flag & ND_NFSV3) { 1450 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 1451 } else if (!nd->nd_repstat && (nd->nd_flag & ND_NFSV2)) { 1452 error = nfsm_loadattr(nd, nap); 1453 if (!error) 1454 *attrflagp = 1; 1455 } 1456 if (nd->nd_repstat || error) { 1457 if (!error) 1458 error = nd->nd_repstat; 1459 goto nfsmout; 1460 } 1461 if (nd->nd_flag & ND_NFSV3) { 1462 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1463 eof = fxdr_unsigned(int, *(tl + 1)); 1464 } else if (nd->nd_flag & ND_NFSV4) { 1465 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 1466 eof = fxdr_unsigned(int, *tl); 1467 } 1468 NFSM_STRSIZ(retlen, len); 1469 error = nfsm_mbufuio(nd, uiop, retlen); 1470 if (error) 1471 goto nfsmout; 1472 mbuf_freem(nd->nd_mrep); 1473 nd->nd_mrep = NULL; 1474 tsiz -= retlen; 1475 if (!(nd->nd_flag & ND_NFSV2)) { 1476 if (eof || retlen == 0) 1477 tsiz = 0; 1478 } else if (retlen < len) 1479 tsiz = 0; 1480 } 1481 return (0); 1482 nfsmout: 1483 if (nd->nd_mrep != NULL) 1484 mbuf_freem(nd->nd_mrep); 1485 return (error); 1486 } 1487 1488 /* 1489 * nfs write operation 1490 * When called_from_strategy != 0, it should return EIO for an error that 1491 * indicates recovery is in progress, so that the buffer will be left 1492 * dirty and be written back to the server later. If it loops around, 1493 * the recovery thread could get stuck waiting for the buffer and recovery 1494 * will then deadlock. 1495 */ 1496 APPLESTATIC int 1497 nfsrpc_write(vnode_t vp, struct uio *uiop, int *iomode, int *must_commit, 1498 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, 1499 void *stuff, int called_from_strategy) 1500 { 1501 int error, expireret = 0, retrycnt, nostateid; 1502 u_int32_t clidrev = 0; 1503 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 1504 struct nfsnode *np = VTONFS(vp); 1505 struct ucred *newcred; 1506 struct nfsfh *nfhp = NULL; 1507 nfsv4stateid_t stateid; 1508 void *lckp; 1509 1510 *must_commit = 0; 1511 if (nmp->nm_clp != NULL) 1512 clidrev = nmp->nm_clp->nfsc_clientidrev; 1513 newcred = cred; 1514 if (NFSHASNFSV4(nmp)) { 1515 newcred = NFSNEWCRED(cred); 1516 nfhp = np->n_fhp; 1517 } 1518 retrycnt = 0; 1519 do { 1520 lckp = NULL; 1521 nostateid = 0; 1522 if (NFSHASNFSV4(nmp)) { 1523 (void)nfscl_getstateid(vp, nfhp->nfh_fh, nfhp->nfh_len, 1524 NFSV4OPEN_ACCESSWRITE, 0, newcred, p, &stateid, 1525 &lckp); 1526 if (stateid.other[0] == 0 && stateid.other[1] == 0 && 1527 stateid.other[2] == 0) { 1528 nostateid = 1; 1529 NFSCL_DEBUG(1, "stateid0 in write\n"); 1530 } 1531 } 1532 1533 /* 1534 * If there is no stateid for NFSv4, it means this is an 1535 * extraneous write after close. Basically a poorly 1536 * implemented buffer cache. Just don't do the write. 1537 */ 1538 if (nostateid) 1539 error = 0; 1540 else 1541 error = nfsrpc_writerpc(vp, uiop, iomode, must_commit, 1542 newcred, &stateid, p, nap, attrflagp, stuff); 1543 if (error == NFSERR_STALESTATEID || error == NFSERR_BADSESSION) 1544 nfscl_initiate_recovery(nmp->nm_clp); 1545 if (lckp != NULL) 1546 nfscl_lockderef(lckp); 1547 if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 1548 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 1549 error == NFSERR_OLDSTATEID || error == NFSERR_BADSESSION) { 1550 (void) nfs_catnap(PZERO, error, "nfs_write"); 1551 } else if ((error == NFSERR_EXPIRED || 1552 error == NFSERR_BADSTATEID) && clidrev != 0) { 1553 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p); 1554 } 1555 retrycnt++; 1556 } while (error == NFSERR_GRACE || error == NFSERR_DELAY || 1557 ((error == NFSERR_STALESTATEID || error == NFSERR_BADSESSION || 1558 error == NFSERR_STALEDONTRECOVER) && called_from_strategy == 0) || 1559 (error == NFSERR_OLDSTATEID && retrycnt < 20) || 1560 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) && 1561 expireret == 0 && clidrev != 0 && retrycnt < 4)); 1562 if (error != 0 && (retrycnt >= 4 || 1563 ((error == NFSERR_STALESTATEID || error == NFSERR_BADSESSION || 1564 error == NFSERR_STALEDONTRECOVER) && called_from_strategy != 0))) 1565 error = EIO; 1566 if (NFSHASNFSV4(nmp)) 1567 NFSFREECRED(newcred); 1568 return (error); 1569 } 1570 1571 /* 1572 * The actual write RPC. 1573 */ 1574 static int 1575 nfsrpc_writerpc(vnode_t vp, struct uio *uiop, int *iomode, 1576 int *must_commit, struct ucred *cred, nfsv4stateid_t *stateidp, 1577 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff) 1578 { 1579 u_int32_t *tl; 1580 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 1581 struct nfsnode *np = VTONFS(vp); 1582 int error = 0, len, tsiz, rlen, commit, committed = NFSWRITE_FILESYNC; 1583 int wccflag = 0, wsize; 1584 int32_t backup; 1585 struct nfsrv_descript nfsd; 1586 struct nfsrv_descript *nd = &nfsd; 1587 nfsattrbit_t attrbits; 1588 off_t tmp_off; 1589 1590 KASSERT(uiop->uio_iovcnt == 1, ("nfs: writerpc iovcnt > 1")); 1591 *attrflagp = 0; 1592 tsiz = uio_uio_resid(uiop); 1593 tmp_off = uiop->uio_offset + tsiz; 1594 NFSLOCKMNT(nmp); 1595 if (tmp_off > nmp->nm_maxfilesize || tmp_off < uiop->uio_offset) { 1596 NFSUNLOCKMNT(nmp); 1597 return (EFBIG); 1598 } 1599 wsize = nmp->nm_wsize; 1600 NFSUNLOCKMNT(nmp); 1601 nd->nd_mrep = NULL; /* NFSv2 sometimes does a write with */ 1602 nd->nd_repstat = 0; /* uio_resid == 0, so the while is not done */ 1603 while (tsiz > 0) { 1604 *attrflagp = 0; 1605 len = (tsiz > wsize) ? wsize : tsiz; 1606 NFSCL_REQSTART(nd, NFSPROC_WRITE, vp); 1607 if (nd->nd_flag & ND_NFSV4) { 1608 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID); 1609 NFSM_BUILD(tl, u_int32_t *, NFSX_HYPER+2*NFSX_UNSIGNED); 1610 txdr_hyper(uiop->uio_offset, tl); 1611 tl += 2; 1612 *tl++ = txdr_unsigned(*iomode); 1613 *tl = txdr_unsigned(len); 1614 } else if (nd->nd_flag & ND_NFSV3) { 1615 NFSM_BUILD(tl, u_int32_t *, NFSX_HYPER+3*NFSX_UNSIGNED); 1616 txdr_hyper(uiop->uio_offset, tl); 1617 tl += 2; 1618 *tl++ = txdr_unsigned(len); 1619 *tl++ = txdr_unsigned(*iomode); 1620 *tl = txdr_unsigned(len); 1621 } else { 1622 u_int32_t x; 1623 1624 NFSM_BUILD(tl, u_int32_t *, 4 * NFSX_UNSIGNED); 1625 /* 1626 * Not sure why someone changed this, since the 1627 * RFC clearly states that "beginoffset" and 1628 * "totalcount" are ignored, but it wouldn't 1629 * surprise me if there's a busted server out there. 1630 */ 1631 /* Set both "begin" and "current" to non-garbage. */ 1632 x = txdr_unsigned((u_int32_t)uiop->uio_offset); 1633 *tl++ = x; /* "begin offset" */ 1634 *tl++ = x; /* "current offset" */ 1635 x = txdr_unsigned(len); 1636 *tl++ = x; /* total to this offset */ 1637 *tl = x; /* size of this write */ 1638 1639 } 1640 nfsm_uiombuf(nd, uiop, len); 1641 /* 1642 * Although it is tempting to do a normal Getattr Op in the 1643 * NFSv4 compound, the result can be a nearly hung client 1644 * system if the Getattr asks for Owner and/or OwnerGroup. 1645 * It occurs when the client can't map either the Owner or 1646 * Owner_group name in the Getattr reply to a uid/gid. When 1647 * there is a cache miss, the kernel does an upcall to the 1648 * nfsuserd. Then, it can try and read the local /etc/passwd 1649 * or /etc/group file. It can then block in getnewbuf(), 1650 * waiting for dirty writes to be pushed to the NFS server. 1651 * The only reason this doesn't result in a complete 1652 * deadlock, is that the upcall times out and allows 1653 * the write to complete. However, progress is so slow 1654 * that it might just as well be deadlocked. 1655 * As such, we get the rest of the attributes, but not 1656 * Owner or Owner_group. 1657 * nb: nfscl_loadattrcache() needs to be told that these 1658 * partial attributes from a write rpc are being 1659 * passed in, via a argument flag. 1660 */ 1661 if (nd->nd_flag & ND_NFSV4) { 1662 NFSWRITEGETATTR_ATTRBIT(&attrbits); 1663 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1664 *tl = txdr_unsigned(NFSV4OP_GETATTR); 1665 (void) nfsrv_putattrbit(nd, &attrbits); 1666 } 1667 error = nfscl_request(nd, vp, p, cred, stuff); 1668 if (error) 1669 return (error); 1670 if (nd->nd_repstat) { 1671 /* 1672 * In case the rpc gets retried, roll 1673 * the uio fileds changed by nfsm_uiombuf() 1674 * back. 1675 */ 1676 uiop->uio_offset -= len; 1677 uio_uio_resid_add(uiop, len); 1678 uio_iov_base_add(uiop, -len); 1679 uio_iov_len_add(uiop, len); 1680 } 1681 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) { 1682 error = nfscl_wcc_data(nd, vp, nap, attrflagp, 1683 &wccflag, stuff); 1684 if (error) 1685 goto nfsmout; 1686 } 1687 if (!nd->nd_repstat) { 1688 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) { 1689 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED 1690 + NFSX_VERF); 1691 rlen = fxdr_unsigned(int, *tl++); 1692 if (rlen == 0) { 1693 error = NFSERR_IO; 1694 goto nfsmout; 1695 } else if (rlen < len) { 1696 backup = len - rlen; 1697 uio_iov_base_add(uiop, -(backup)); 1698 uio_iov_len_add(uiop, backup); 1699 uiop->uio_offset -= backup; 1700 uio_uio_resid_add(uiop, backup); 1701 len = rlen; 1702 } 1703 commit = fxdr_unsigned(int, *tl++); 1704 1705 /* 1706 * Return the lowest commitment level 1707 * obtained by any of the RPCs. 1708 */ 1709 if (committed == NFSWRITE_FILESYNC) 1710 committed = commit; 1711 else if (committed == NFSWRITE_DATASYNC && 1712 commit == NFSWRITE_UNSTABLE) 1713 committed = commit; 1714 NFSLOCKMNT(nmp); 1715 if (!NFSHASWRITEVERF(nmp)) { 1716 NFSBCOPY((caddr_t)tl, 1717 (caddr_t)&nmp->nm_verf[0], 1718 NFSX_VERF); 1719 NFSSETWRITEVERF(nmp); 1720 } else if (NFSBCMP(tl, nmp->nm_verf, 1721 NFSX_VERF)) { 1722 *must_commit = 1; 1723 NFSBCOPY(tl, nmp->nm_verf, NFSX_VERF); 1724 } 1725 NFSUNLOCKMNT(nmp); 1726 } 1727 if (nd->nd_flag & ND_NFSV4) 1728 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1729 if (nd->nd_flag & (ND_NFSV2 | ND_NFSV4)) { 1730 error = nfsm_loadattr(nd, nap); 1731 if (!error) 1732 *attrflagp = NFS_LATTR_NOSHRINK; 1733 } 1734 } else { 1735 error = nd->nd_repstat; 1736 } 1737 if (error) 1738 goto nfsmout; 1739 NFSWRITERPC_SETTIME(wccflag, np, nap, (nd->nd_flag & ND_NFSV4)); 1740 mbuf_freem(nd->nd_mrep); 1741 nd->nd_mrep = NULL; 1742 tsiz -= len; 1743 } 1744 nfsmout: 1745 if (nd->nd_mrep != NULL) 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 pertially 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 if (nd->nd_mrep != NULL) 3116 mbuf_freem(nd->nd_mrep); 3117 return (error); 3118 } 3119 3120 #ifndef APPLE 3121 /* 3122 * NFS V3 readdir plus RPC. Used in place of nfsrpc_readdir(). 3123 * (Also used for NFS V4 when mount flag set.) 3124 * (ditto above w.r.t. multiple of DIRBLKSIZ, etc.) 3125 */ 3126 APPLESTATIC int 3127 nfsrpc_readdirplus(vnode_t vp, struct uio *uiop, nfsuint64 *cookiep, 3128 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, 3129 int *eofp, void *stuff) 3130 { 3131 int len, left; 3132 struct dirent *dp = NULL; 3133 u_int32_t *tl; 3134 vnode_t newvp = NULLVP; 3135 struct nfsrv_descript nfsd, *nd = &nfsd; 3136 struct nameidata nami, *ndp = &nami; 3137 struct componentname *cnp = &ndp->ni_cnd; 3138 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 3139 struct nfsnode *dnp = VTONFS(vp), *np; 3140 struct nfsvattr nfsva; 3141 struct nfsfh *nfhp; 3142 nfsquad_t cookie, ncookie; 3143 int error = 0, tlen, more_dirs = 1, blksiz = 0, bigenough = 1; 3144 int attrflag, tryformoredirs = 1, eof = 0, gotmnton = 0; 3145 int isdotdot = 0, unlocknewvp = 0; 3146 long dotfileid, dotdotfileid = 0, fileno = 0; 3147 char *cp; 3148 nfsattrbit_t attrbits, dattrbits; 3149 size_t tresid; 3150 u_int32_t *tl2 = NULL, fakefileno = 0xffffffff, rderr; 3151 struct timespec dctime; 3152 3153 KASSERT(uiop->uio_iovcnt == 1 && 3154 (uio_uio_resid(uiop) & (DIRBLKSIZ - 1)) == 0, 3155 ("nfs readdirplusrpc bad uio")); 3156 timespecclear(&dctime); 3157 *attrflagp = 0; 3158 if (eofp != NULL) 3159 *eofp = 0; 3160 ndp->ni_dvp = vp; 3161 nd->nd_mrep = NULL; 3162 cookie.lval[0] = cookiep->nfsuquad[0]; 3163 cookie.lval[1] = cookiep->nfsuquad[1]; 3164 tresid = uio_uio_resid(uiop); 3165 3166 /* 3167 * For NFSv4, first create the "." and ".." entries. 3168 */ 3169 if (NFSHASNFSV4(nmp)) { 3170 NFSGETATTR_ATTRBIT(&dattrbits); 3171 NFSZERO_ATTRBIT(&attrbits); 3172 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_FILEID); 3173 if (NFSISSET_ATTRBIT(&dnp->n_vattr.na_suppattr, 3174 NFSATTRBIT_MOUNTEDONFILEID)) { 3175 NFSSETBIT_ATTRBIT(&attrbits, 3176 NFSATTRBIT_MOUNTEDONFILEID); 3177 gotmnton = 1; 3178 } else { 3179 /* 3180 * Must fake it. Use the fileno, except when the 3181 * fsid is != to that of the directory. For that 3182 * case, generate a fake fileno that is not the same. 3183 */ 3184 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_FSID); 3185 gotmnton = 0; 3186 } 3187 3188 /* 3189 * Joy, oh joy. For V4 we get to hand craft '.' and '..'. 3190 */ 3191 if (uiop->uio_offset == 0) { 3192 NFSCL_REQSTART(nd, NFSPROC_LOOKUPP, vp); 3193 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 3194 *tl++ = txdr_unsigned(NFSV4OP_GETFH); 3195 *tl = txdr_unsigned(NFSV4OP_GETATTR); 3196 (void) nfsrv_putattrbit(nd, &attrbits); 3197 error = nfscl_request(nd, vp, p, cred, stuff); 3198 if (error) 3199 return (error); 3200 dotfileid = 0; /* Fake out the compiler. */ 3201 if ((nd->nd_flag & ND_NOMOREDATA) == 0) { 3202 error = nfsm_loadattr(nd, &nfsva); 3203 if (error != 0) 3204 goto nfsmout; 3205 dctime = nfsva.na_ctime; 3206 dotfileid = nfsva.na_fileid; 3207 } 3208 if (nd->nd_repstat == 0) { 3209 NFSM_DISSECT(tl, u_int32_t *, 5 * NFSX_UNSIGNED); 3210 len = fxdr_unsigned(int, *(tl + 4)); 3211 if (len > 0 && len <= NFSX_V4FHMAX) 3212 error = nfsm_advance(nd, NFSM_RNDUP(len), -1); 3213 else 3214 error = EPERM; 3215 if (!error) { 3216 NFSM_DISSECT(tl, u_int32_t *, 2*NFSX_UNSIGNED); 3217 nfsva.na_mntonfileno = 0xffffffff; 3218 error = nfsv4_loadattr(nd, NULL, &nfsva, NULL, 3219 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0, 3220 NULL, NULL, NULL, p, cred); 3221 if (error) { 3222 dotdotfileid = dotfileid; 3223 } else if (gotmnton) { 3224 if (nfsva.na_mntonfileno != 0xffffffff) 3225 dotdotfileid = nfsva.na_mntonfileno; 3226 else 3227 dotdotfileid = nfsva.na_fileid; 3228 } else if (nfsva.na_filesid[0] == 3229 dnp->n_vattr.na_filesid[0] && 3230 nfsva.na_filesid[1] == 3231 dnp->n_vattr.na_filesid[1]) { 3232 dotdotfileid = nfsva.na_fileid; 3233 } else { 3234 do { 3235 fakefileno--; 3236 } while (fakefileno == 3237 nfsva.na_fileid); 3238 dotdotfileid = fakefileno; 3239 } 3240 } 3241 } else if (nd->nd_repstat == NFSERR_NOENT) { 3242 /* 3243 * Lookupp returns NFSERR_NOENT when we are 3244 * at the root, so just use the current dir. 3245 */ 3246 nd->nd_repstat = 0; 3247 dotdotfileid = dotfileid; 3248 } else { 3249 error = nd->nd_repstat; 3250 } 3251 mbuf_freem(nd->nd_mrep); 3252 if (error) 3253 return (error); 3254 nd->nd_mrep = NULL; 3255 dp = (struct dirent *)uio_iov_base(uiop); 3256 dp->d_type = DT_DIR; 3257 dp->d_fileno = dotfileid; 3258 dp->d_namlen = 1; 3259 dp->d_name[0] = '.'; 3260 dp->d_name[1] = '\0'; 3261 dp->d_reclen = DIRENT_SIZE(dp) + NFSX_HYPER; 3262 /* 3263 * Just make these offset cookie 0. 3264 */ 3265 tl = (u_int32_t *)&dp->d_name[4]; 3266 *tl++ = 0; 3267 *tl = 0; 3268 blksiz += dp->d_reclen; 3269 uio_uio_resid_add(uiop, -(dp->d_reclen)); 3270 uiop->uio_offset += dp->d_reclen; 3271 uio_iov_base_add(uiop, dp->d_reclen); 3272 uio_iov_len_add(uiop, -(dp->d_reclen)); 3273 dp = (struct dirent *)uio_iov_base(uiop); 3274 dp->d_type = DT_DIR; 3275 dp->d_fileno = dotdotfileid; 3276 dp->d_namlen = 2; 3277 dp->d_name[0] = '.'; 3278 dp->d_name[1] = '.'; 3279 dp->d_name[2] = '\0'; 3280 dp->d_reclen = DIRENT_SIZE(dp) + NFSX_HYPER; 3281 /* 3282 * Just make these offset cookie 0. 3283 */ 3284 tl = (u_int32_t *)&dp->d_name[4]; 3285 *tl++ = 0; 3286 *tl = 0; 3287 blksiz += dp->d_reclen; 3288 uio_uio_resid_add(uiop, -(dp->d_reclen)); 3289 uiop->uio_offset += dp->d_reclen; 3290 uio_iov_base_add(uiop, dp->d_reclen); 3291 uio_iov_len_add(uiop, -(dp->d_reclen)); 3292 } 3293 NFSREADDIRPLUS_ATTRBIT(&attrbits); 3294 if (gotmnton) 3295 NFSSETBIT_ATTRBIT(&attrbits, 3296 NFSATTRBIT_MOUNTEDONFILEID); 3297 } 3298 3299 /* 3300 * Loop around doing readdir rpc's of size nm_readdirsize. 3301 * The stopping criteria is EOF or buffer full. 3302 */ 3303 while (more_dirs && bigenough) { 3304 *attrflagp = 0; 3305 NFSCL_REQSTART(nd, NFSPROC_READDIRPLUS, vp); 3306 NFSM_BUILD(tl, u_int32_t *, 6 * NFSX_UNSIGNED); 3307 *tl++ = cookie.lval[0]; 3308 *tl++ = cookie.lval[1]; 3309 if (cookie.qval == 0) { 3310 *tl++ = 0; 3311 *tl++ = 0; 3312 } else { 3313 NFSLOCKNODE(dnp); 3314 *tl++ = dnp->n_cookieverf.nfsuquad[0]; 3315 *tl++ = dnp->n_cookieverf.nfsuquad[1]; 3316 NFSUNLOCKNODE(dnp); 3317 } 3318 *tl++ = txdr_unsigned(nmp->nm_readdirsize); 3319 *tl = txdr_unsigned(nmp->nm_readdirsize); 3320 if (nd->nd_flag & ND_NFSV4) { 3321 (void) nfsrv_putattrbit(nd, &attrbits); 3322 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 3323 *tl = txdr_unsigned(NFSV4OP_GETATTR); 3324 (void) nfsrv_putattrbit(nd, &dattrbits); 3325 } 3326 error = nfscl_request(nd, vp, p, cred, stuff); 3327 if (error) 3328 return (error); 3329 if (nd->nd_flag & ND_NFSV3) 3330 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 3331 if (nd->nd_repstat || error) { 3332 if (!error) 3333 error = nd->nd_repstat; 3334 goto nfsmout; 3335 } 3336 if ((nd->nd_flag & ND_NFSV3) != 0 && *attrflagp != 0) 3337 dctime = nap->na_ctime; 3338 NFSM_DISSECT(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 3339 NFSLOCKNODE(dnp); 3340 dnp->n_cookieverf.nfsuquad[0] = *tl++; 3341 dnp->n_cookieverf.nfsuquad[1] = *tl++; 3342 NFSUNLOCKNODE(dnp); 3343 more_dirs = fxdr_unsigned(int, *tl); 3344 if (!more_dirs) 3345 tryformoredirs = 0; 3346 3347 /* loop through the dir entries, doctoring them to 4bsd form */ 3348 while (more_dirs && bigenough) { 3349 NFSM_DISSECT(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 3350 if (nd->nd_flag & ND_NFSV4) { 3351 ncookie.lval[0] = *tl++; 3352 ncookie.lval[1] = *tl++; 3353 } else { 3354 fileno = fxdr_unsigned(long, *++tl); 3355 tl++; 3356 } 3357 len = fxdr_unsigned(int, *tl); 3358 if (len <= 0 || len > NFS_MAXNAMLEN) { 3359 error = EBADRPC; 3360 goto nfsmout; 3361 } 3362 tlen = NFSM_RNDUP(len); 3363 if (tlen == len) 3364 tlen += 4; /* To ensure null termination */ 3365 left = DIRBLKSIZ - blksiz; 3366 if ((tlen + DIRHDSIZ + NFSX_HYPER) > left) { 3367 dp->d_reclen += left; 3368 uio_iov_base_add(uiop, left); 3369 uio_iov_len_add(uiop, -(left)); 3370 uio_uio_resid_add(uiop, -(left)); 3371 uiop->uio_offset += left; 3372 blksiz = 0; 3373 } 3374 if ((tlen + DIRHDSIZ + NFSX_HYPER) > uio_uio_resid(uiop)) 3375 bigenough = 0; 3376 if (bigenough) { 3377 dp = (struct dirent *)uio_iov_base(uiop); 3378 dp->d_namlen = len; 3379 dp->d_reclen = tlen + DIRHDSIZ + NFSX_HYPER; 3380 dp->d_type = DT_UNKNOWN; 3381 blksiz += dp->d_reclen; 3382 if (blksiz == DIRBLKSIZ) 3383 blksiz = 0; 3384 uio_uio_resid_add(uiop, -(DIRHDSIZ)); 3385 uiop->uio_offset += DIRHDSIZ; 3386 uio_iov_base_add(uiop, DIRHDSIZ); 3387 uio_iov_len_add(uiop, -(DIRHDSIZ)); 3388 cnp->cn_nameptr = uio_iov_base(uiop); 3389 cnp->cn_namelen = len; 3390 NFSCNHASHZERO(cnp); 3391 error = nfsm_mbufuio(nd, uiop, len); 3392 if (error) 3393 goto nfsmout; 3394 cp = uio_iov_base(uiop); 3395 tlen -= len; 3396 *cp = '\0'; 3397 cp += tlen; /* points to cookie storage */ 3398 tl2 = (u_int32_t *)cp; 3399 if (len == 2 && cnp->cn_nameptr[0] == '.' && 3400 cnp->cn_nameptr[1] == '.') 3401 isdotdot = 1; 3402 else 3403 isdotdot = 0; 3404 uio_iov_base_add(uiop, (tlen + NFSX_HYPER)); 3405 uio_iov_len_add(uiop, -(tlen + NFSX_HYPER)); 3406 uio_uio_resid_add(uiop, -(tlen + NFSX_HYPER)); 3407 uiop->uio_offset += (tlen + NFSX_HYPER); 3408 } else { 3409 error = nfsm_advance(nd, NFSM_RNDUP(len), -1); 3410 if (error) 3411 goto nfsmout; 3412 } 3413 nfhp = NULL; 3414 if (nd->nd_flag & ND_NFSV3) { 3415 NFSM_DISSECT(tl, u_int32_t *, 3*NFSX_UNSIGNED); 3416 ncookie.lval[0] = *tl++; 3417 ncookie.lval[1] = *tl++; 3418 attrflag = fxdr_unsigned(int, *tl); 3419 if (attrflag) { 3420 error = nfsm_loadattr(nd, &nfsva); 3421 if (error) 3422 goto nfsmout; 3423 } 3424 NFSM_DISSECT(tl,u_int32_t *,NFSX_UNSIGNED); 3425 if (*tl) { 3426 error = nfsm_getfh(nd, &nfhp); 3427 if (error) 3428 goto nfsmout; 3429 } 3430 if (!attrflag && nfhp != NULL) { 3431 FREE((caddr_t)nfhp, M_NFSFH); 3432 nfhp = NULL; 3433 } 3434 } else { 3435 rderr = 0; 3436 nfsva.na_mntonfileno = 0xffffffff; 3437 error = nfsv4_loadattr(nd, NULL, &nfsva, &nfhp, 3438 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0, 3439 NULL, NULL, &rderr, p, cred); 3440 if (error) 3441 goto nfsmout; 3442 } 3443 3444 if (bigenough) { 3445 if (nd->nd_flag & ND_NFSV4) { 3446 if (rderr) { 3447 dp->d_fileno = 0; 3448 } else if (gotmnton) { 3449 if (nfsva.na_mntonfileno != 0xffffffff) 3450 dp->d_fileno = nfsva.na_mntonfileno; 3451 else 3452 dp->d_fileno = nfsva.na_fileid; 3453 } else if (nfsva.na_filesid[0] == 3454 dnp->n_vattr.na_filesid[0] && 3455 nfsva.na_filesid[1] == 3456 dnp->n_vattr.na_filesid[1]) { 3457 dp->d_fileno = nfsva.na_fileid; 3458 } else { 3459 do { 3460 fakefileno--; 3461 } while (fakefileno == 3462 nfsva.na_fileid); 3463 dp->d_fileno = fakefileno; 3464 } 3465 } else { 3466 dp->d_fileno = fileno; 3467 } 3468 *tl2++ = cookiep->nfsuquad[0] = cookie.lval[0] = 3469 ncookie.lval[0]; 3470 *tl2 = cookiep->nfsuquad[1] = cookie.lval[1] = 3471 ncookie.lval[1]; 3472 3473 if (nfhp != NULL) { 3474 if (NFSRV_CMPFH(nfhp->nfh_fh, nfhp->nfh_len, 3475 dnp->n_fhp->nfh_fh, dnp->n_fhp->nfh_len)) { 3476 VREF(vp); 3477 newvp = vp; 3478 unlocknewvp = 0; 3479 FREE((caddr_t)nfhp, M_NFSFH); 3480 np = dnp; 3481 } else if (isdotdot != 0) { 3482 /* 3483 * Skip doing a nfscl_nget() call for "..". 3484 * There's a race between acquiring the nfs 3485 * node here and lookups that look for the 3486 * directory being read (in the parent). 3487 * It would try to get a lock on ".." here, 3488 * owning the lock on the directory being 3489 * read. Lookup will hold the lock on ".." 3490 * and try to acquire the lock on the 3491 * directory being read. 3492 * If the directory is unlocked/relocked, 3493 * then there is a LOR with the buflock 3494 * vp is relocked. 3495 */ 3496 free(nfhp, M_NFSFH); 3497 } else { 3498 error = nfscl_nget(vnode_mount(vp), vp, 3499 nfhp, cnp, p, &np, NULL, LK_EXCLUSIVE); 3500 if (!error) { 3501 newvp = NFSTOV(np); 3502 unlocknewvp = 1; 3503 } 3504 } 3505 nfhp = NULL; 3506 if (newvp != NULLVP) { 3507 error = nfscl_loadattrcache(&newvp, 3508 &nfsva, NULL, NULL, 0, 0); 3509 if (error) { 3510 if (unlocknewvp) 3511 vput(newvp); 3512 else 3513 vrele(newvp); 3514 goto nfsmout; 3515 } 3516 dp->d_type = 3517 vtonfs_dtype(np->n_vattr.na_type); 3518 ndp->ni_vp = newvp; 3519 NFSCNHASH(cnp, HASHINIT); 3520 if (cnp->cn_namelen <= NCHNAMLEN && 3521 (newvp->v_type != VDIR || 3522 dctime.tv_sec != 0)) { 3523 cache_enter_time(ndp->ni_dvp, 3524 ndp->ni_vp, cnp, 3525 &nfsva.na_ctime, 3526 newvp->v_type != VDIR ? NULL : 3527 &dctime); 3528 } 3529 if (unlocknewvp) 3530 vput(newvp); 3531 else 3532 vrele(newvp); 3533 newvp = NULLVP; 3534 } 3535 } 3536 } else if (nfhp != NULL) { 3537 FREE((caddr_t)nfhp, M_NFSFH); 3538 } 3539 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 3540 more_dirs = fxdr_unsigned(int, *tl); 3541 } 3542 /* 3543 * If at end of rpc data, get the eof boolean 3544 */ 3545 if (!more_dirs) { 3546 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 3547 eof = fxdr_unsigned(int, *tl); 3548 if (tryformoredirs) 3549 more_dirs = !eof; 3550 if (nd->nd_flag & ND_NFSV4) { 3551 error = nfscl_postop_attr(nd, nap, attrflagp, 3552 stuff); 3553 if (error) 3554 goto nfsmout; 3555 } 3556 } 3557 mbuf_freem(nd->nd_mrep); 3558 nd->nd_mrep = NULL; 3559 } 3560 /* 3561 * Fill last record, iff any, out to a multiple of DIRBLKSIZ 3562 * by increasing d_reclen for the last record. 3563 */ 3564 if (blksiz > 0) { 3565 left = DIRBLKSIZ - blksiz; 3566 dp->d_reclen += left; 3567 uio_iov_base_add(uiop, left); 3568 uio_iov_len_add(uiop, -(left)); 3569 uio_uio_resid_add(uiop, -(left)); 3570 uiop->uio_offset += left; 3571 } 3572 3573 /* 3574 * If returning no data, assume end of file. 3575 * If not bigenough, return not end of file, since you aren't 3576 * returning all the data 3577 * Otherwise, return the eof flag from the server. 3578 */ 3579 if (eofp != NULL) { 3580 if (tresid == uio_uio_resid(uiop)) 3581 *eofp = 1; 3582 else if (!bigenough) 3583 *eofp = 0; 3584 else 3585 *eofp = eof; 3586 } 3587 3588 /* 3589 * Add extra empty records to any remaining DIRBLKSIZ chunks. 3590 */ 3591 while (uio_uio_resid(uiop) > 0 && uio_uio_resid(uiop) != tresid) { 3592 dp = (struct dirent *)uio_iov_base(uiop); 3593 dp->d_type = DT_UNKNOWN; 3594 dp->d_fileno = 0; 3595 dp->d_namlen = 0; 3596 dp->d_name[0] = '\0'; 3597 tl = (u_int32_t *)&dp->d_name[4]; 3598 *tl++ = cookie.lval[0]; 3599 *tl = cookie.lval[1]; 3600 dp->d_reclen = DIRBLKSIZ; 3601 uio_iov_base_add(uiop, DIRBLKSIZ); 3602 uio_iov_len_add(uiop, -(DIRBLKSIZ)); 3603 uio_uio_resid_add(uiop, -(DIRBLKSIZ)); 3604 uiop->uio_offset += DIRBLKSIZ; 3605 } 3606 3607 nfsmout: 3608 if (nd->nd_mrep != NULL) 3609 mbuf_freem(nd->nd_mrep); 3610 return (error); 3611 } 3612 #endif /* !APPLE */ 3613 3614 /* 3615 * Nfs commit rpc 3616 */ 3617 APPLESTATIC int 3618 nfsrpc_commit(vnode_t vp, u_quad_t offset, int cnt, struct ucred *cred, 3619 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff) 3620 { 3621 u_int32_t *tl; 3622 struct nfsrv_descript nfsd, *nd = &nfsd; 3623 nfsattrbit_t attrbits; 3624 int error; 3625 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 3626 3627 *attrflagp = 0; 3628 NFSCL_REQSTART(nd, NFSPROC_COMMIT, vp); 3629 NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 3630 txdr_hyper(offset, tl); 3631 tl += 2; 3632 *tl = txdr_unsigned(cnt); 3633 if (nd->nd_flag & ND_NFSV4) { 3634 /* 3635 * And do a Getattr op. 3636 */ 3637 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 3638 *tl = txdr_unsigned(NFSV4OP_GETATTR); 3639 NFSGETATTR_ATTRBIT(&attrbits); 3640 (void) nfsrv_putattrbit(nd, &attrbits); 3641 } 3642 error = nfscl_request(nd, vp, p, cred, stuff); 3643 if (error) 3644 return (error); 3645 error = nfscl_wcc_data(nd, vp, nap, attrflagp, NULL, stuff); 3646 if (!error && !nd->nd_repstat) { 3647 NFSM_DISSECT(tl, u_int32_t *, NFSX_VERF); 3648 NFSLOCKMNT(nmp); 3649 if (NFSBCMP(nmp->nm_verf, tl, NFSX_VERF)) { 3650 NFSBCOPY(tl, nmp->nm_verf, NFSX_VERF); 3651 nd->nd_repstat = NFSERR_STALEWRITEVERF; 3652 } 3653 NFSUNLOCKMNT(nmp); 3654 if (nd->nd_flag & ND_NFSV4) 3655 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 3656 } 3657 nfsmout: 3658 if (!error && nd->nd_repstat) 3659 error = nd->nd_repstat; 3660 mbuf_freem(nd->nd_mrep); 3661 return (error); 3662 } 3663 3664 /* 3665 * NFS byte range lock rpc. 3666 * (Mostly just calls one of the three lower level RPC routines.) 3667 */ 3668 APPLESTATIC int 3669 nfsrpc_advlock(vnode_t vp, off_t size, int op, struct flock *fl, 3670 int reclaim, struct ucred *cred, NFSPROC_T *p, void *id, int flags) 3671 { 3672 struct nfscllockowner *lp; 3673 struct nfsclclient *clp; 3674 struct nfsfh *nfhp; 3675 struct nfsrv_descript nfsd, *nd = &nfsd; 3676 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 3677 u_int64_t off, len; 3678 off_t start, end; 3679 u_int32_t clidrev = 0; 3680 int error = 0, newone = 0, expireret = 0, retrycnt, donelocally; 3681 int callcnt, dorpc; 3682 3683 /* 3684 * Convert the flock structure into a start and end and do POSIX 3685 * bounds checking. 3686 */ 3687 switch (fl->l_whence) { 3688 case SEEK_SET: 3689 case SEEK_CUR: 3690 /* 3691 * Caller is responsible for adding any necessary offset 3692 * when SEEK_CUR is used. 3693 */ 3694 start = fl->l_start; 3695 off = fl->l_start; 3696 break; 3697 case SEEK_END: 3698 start = size + fl->l_start; 3699 off = size + fl->l_start; 3700 break; 3701 default: 3702 return (EINVAL); 3703 } 3704 if (start < 0) 3705 return (EINVAL); 3706 if (fl->l_len != 0) { 3707 end = start + fl->l_len - 1; 3708 if (end < start) 3709 return (EINVAL); 3710 } 3711 3712 len = fl->l_len; 3713 if (len == 0) 3714 len = NFS64BITSSET; 3715 retrycnt = 0; 3716 do { 3717 nd->nd_repstat = 0; 3718 if (op == F_GETLK) { 3719 error = nfscl_getcl(vnode_mount(vp), cred, p, 1, &clp); 3720 if (error) 3721 return (error); 3722 error = nfscl_lockt(vp, clp, off, len, fl, p, id, flags); 3723 if (!error) { 3724 clidrev = clp->nfsc_clientidrev; 3725 error = nfsrpc_lockt(nd, vp, clp, off, len, fl, cred, 3726 p, id, flags); 3727 } else if (error == -1) { 3728 error = 0; 3729 } 3730 nfscl_clientrelease(clp); 3731 } else if (op == F_UNLCK && fl->l_type == F_UNLCK) { 3732 /* 3733 * We must loop around for all lockowner cases. 3734 */ 3735 callcnt = 0; 3736 error = nfscl_getcl(vnode_mount(vp), cred, p, 1, &clp); 3737 if (error) 3738 return (error); 3739 do { 3740 error = nfscl_relbytelock(vp, off, len, cred, p, callcnt, 3741 clp, id, flags, &lp, &dorpc); 3742 /* 3743 * If it returns a NULL lp, we're done. 3744 */ 3745 if (lp == NULL) { 3746 if (callcnt == 0) 3747 nfscl_clientrelease(clp); 3748 else 3749 nfscl_releasealllocks(clp, vp, p, id, flags); 3750 return (error); 3751 } 3752 if (nmp->nm_clp != NULL) 3753 clidrev = nmp->nm_clp->nfsc_clientidrev; 3754 else 3755 clidrev = 0; 3756 /* 3757 * If the server doesn't support Posix lock semantics, 3758 * only allow locks on the entire file, since it won't 3759 * handle overlapping byte ranges. 3760 * There might still be a problem when a lock 3761 * upgrade/downgrade (read<->write) occurs, since the 3762 * server "might" expect an unlock first? 3763 */ 3764 if (dorpc && (lp->nfsl_open->nfso_posixlock || 3765 (off == 0 && len == NFS64BITSSET))) { 3766 /* 3767 * Since the lock records will go away, we must 3768 * wait for grace and delay here. 3769 */ 3770 do { 3771 error = nfsrpc_locku(nd, nmp, lp, off, len, 3772 NFSV4LOCKT_READ, cred, p, 0); 3773 if ((nd->nd_repstat == NFSERR_GRACE || 3774 nd->nd_repstat == NFSERR_DELAY) && 3775 error == 0) 3776 (void) nfs_catnap(PZERO, (int)nd->nd_repstat, 3777 "nfs_advlock"); 3778 } while ((nd->nd_repstat == NFSERR_GRACE || 3779 nd->nd_repstat == NFSERR_DELAY) && error == 0); 3780 } 3781 callcnt++; 3782 } while (error == 0 && nd->nd_repstat == 0); 3783 nfscl_releasealllocks(clp, vp, p, id, flags); 3784 } else if (op == F_SETLK) { 3785 error = nfscl_getbytelock(vp, off, len, fl->l_type, cred, p, 3786 NULL, 0, id, flags, NULL, NULL, &lp, &newone, &donelocally); 3787 if (error || donelocally) { 3788 return (error); 3789 } 3790 if (nmp->nm_clp != NULL) 3791 clidrev = nmp->nm_clp->nfsc_clientidrev; 3792 else 3793 clidrev = 0; 3794 nfhp = VTONFS(vp)->n_fhp; 3795 if (!lp->nfsl_open->nfso_posixlock && 3796 (off != 0 || len != NFS64BITSSET)) { 3797 error = EINVAL; 3798 } else { 3799 error = nfsrpc_lock(nd, nmp, vp, nfhp->nfh_fh, 3800 nfhp->nfh_len, lp, newone, reclaim, off, 3801 len, fl->l_type, cred, p, 0); 3802 } 3803 if (!error) 3804 error = nd->nd_repstat; 3805 nfscl_lockrelease(lp, error, newone); 3806 } else { 3807 error = EINVAL; 3808 } 3809 if (!error) 3810 error = nd->nd_repstat; 3811 if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 3812 error == NFSERR_STALEDONTRECOVER || 3813 error == NFSERR_STALECLIENTID || error == NFSERR_DELAY || 3814 error == NFSERR_BADSESSION) { 3815 (void) nfs_catnap(PZERO, error, "nfs_advlock"); 3816 } else if ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) 3817 && clidrev != 0) { 3818 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p); 3819 retrycnt++; 3820 } 3821 } while (error == NFSERR_GRACE || 3822 error == NFSERR_STALECLIENTID || error == NFSERR_DELAY || 3823 error == NFSERR_STALEDONTRECOVER || error == NFSERR_STALESTATEID || 3824 error == NFSERR_BADSESSION || 3825 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) && 3826 expireret == 0 && clidrev != 0 && retrycnt < 4)); 3827 if (error && retrycnt >= 4) 3828 error = EIO; 3829 return (error); 3830 } 3831 3832 /* 3833 * The lower level routine for the LockT case. 3834 */ 3835 APPLESTATIC int 3836 nfsrpc_lockt(struct nfsrv_descript *nd, vnode_t vp, 3837 struct nfsclclient *clp, u_int64_t off, u_int64_t len, struct flock *fl, 3838 struct ucred *cred, NFSPROC_T *p, void *id, int flags) 3839 { 3840 u_int32_t *tl; 3841 int error, type, size; 3842 uint8_t own[NFSV4CL_LOCKNAMELEN + NFSX_V4FHMAX]; 3843 struct nfsnode *np; 3844 struct nfsmount *nmp; 3845 3846 nmp = VFSTONFS(vp->v_mount); 3847 NFSCL_REQSTART(nd, NFSPROC_LOCKT, vp); 3848 NFSM_BUILD(tl, u_int32_t *, 7 * NFSX_UNSIGNED); 3849 if (fl->l_type == F_RDLCK) 3850 *tl++ = txdr_unsigned(NFSV4LOCKT_READ); 3851 else 3852 *tl++ = txdr_unsigned(NFSV4LOCKT_WRITE); 3853 txdr_hyper(off, tl); 3854 tl += 2; 3855 txdr_hyper(len, tl); 3856 tl += 2; 3857 *tl++ = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[0]; 3858 *tl = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[1]; 3859 nfscl_filllockowner(id, own, flags); 3860 np = VTONFS(vp); 3861 NFSBCOPY(np->n_fhp->nfh_fh, &own[NFSV4CL_LOCKNAMELEN], 3862 np->n_fhp->nfh_len); 3863 (void)nfsm_strtom(nd, own, NFSV4CL_LOCKNAMELEN + np->n_fhp->nfh_len); 3864 error = nfscl_request(nd, vp, p, cred, NULL); 3865 if (error) 3866 return (error); 3867 if (nd->nd_repstat == 0) { 3868 fl->l_type = F_UNLCK; 3869 } else if (nd->nd_repstat == NFSERR_DENIED) { 3870 nd->nd_repstat = 0; 3871 fl->l_whence = SEEK_SET; 3872 NFSM_DISSECT(tl, u_int32_t *, 8 * NFSX_UNSIGNED); 3873 fl->l_start = fxdr_hyper(tl); 3874 tl += 2; 3875 len = fxdr_hyper(tl); 3876 tl += 2; 3877 if (len == NFS64BITSSET) 3878 fl->l_len = 0; 3879 else 3880 fl->l_len = len; 3881 type = fxdr_unsigned(int, *tl++); 3882 if (type == NFSV4LOCKT_WRITE) 3883 fl->l_type = F_WRLCK; 3884 else 3885 fl->l_type = F_RDLCK; 3886 /* 3887 * XXX For now, I have no idea what to do with the 3888 * conflicting lock_owner, so I'll just set the pid == 0 3889 * and skip over the lock_owner. 3890 */ 3891 fl->l_pid = (pid_t)0; 3892 tl += 2; 3893 size = fxdr_unsigned(int, *tl); 3894 if (size < 0 || size > NFSV4_OPAQUELIMIT) 3895 error = EBADRPC; 3896 if (!error) 3897 error = nfsm_advance(nd, NFSM_RNDUP(size), -1); 3898 } else if (nd->nd_repstat == NFSERR_STALECLIENTID || 3899 nd->nd_repstat == NFSERR_BADSESSION) 3900 nfscl_initiate_recovery(clp); 3901 nfsmout: 3902 mbuf_freem(nd->nd_mrep); 3903 return (error); 3904 } 3905 3906 /* 3907 * Lower level function that performs the LockU RPC. 3908 */ 3909 static int 3910 nfsrpc_locku(struct nfsrv_descript *nd, struct nfsmount *nmp, 3911 struct nfscllockowner *lp, u_int64_t off, u_int64_t len, 3912 u_int32_t type, struct ucred *cred, NFSPROC_T *p, int syscred) 3913 { 3914 u_int32_t *tl; 3915 int error; 3916 3917 nfscl_reqstart(nd, NFSPROC_LOCKU, nmp, lp->nfsl_open->nfso_fh, 3918 lp->nfsl_open->nfso_fhlen, NULL, NULL); 3919 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID + 6 * NFSX_UNSIGNED); 3920 *tl++ = txdr_unsigned(type); 3921 *tl = txdr_unsigned(lp->nfsl_seqid); 3922 if (nfstest_outofseq && 3923 (arc4random() % nfstest_outofseq) == 0) 3924 *tl = txdr_unsigned(lp->nfsl_seqid + 1); 3925 tl++; 3926 if (NFSHASNFSV4N(nmp)) 3927 *tl++ = 0; 3928 else 3929 *tl++ = lp->nfsl_stateid.seqid; 3930 *tl++ = lp->nfsl_stateid.other[0]; 3931 *tl++ = lp->nfsl_stateid.other[1]; 3932 *tl++ = lp->nfsl_stateid.other[2]; 3933 txdr_hyper(off, tl); 3934 tl += 2; 3935 txdr_hyper(len, tl); 3936 if (syscred) 3937 nd->nd_flag |= ND_USEGSSNAME; 3938 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 3939 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 3940 NFSCL_INCRSEQID(lp->nfsl_seqid, nd); 3941 if (error) 3942 return (error); 3943 if (nd->nd_repstat == 0) { 3944 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID); 3945 lp->nfsl_stateid.seqid = *tl++; 3946 lp->nfsl_stateid.other[0] = *tl++; 3947 lp->nfsl_stateid.other[1] = *tl++; 3948 lp->nfsl_stateid.other[2] = *tl; 3949 } else if (nd->nd_repstat == NFSERR_STALESTATEID || 3950 nd->nd_repstat == NFSERR_BADSESSION) 3951 nfscl_initiate_recovery(lp->nfsl_open->nfso_own->nfsow_clp); 3952 nfsmout: 3953 mbuf_freem(nd->nd_mrep); 3954 return (error); 3955 } 3956 3957 /* 3958 * The actual Lock RPC. 3959 */ 3960 APPLESTATIC int 3961 nfsrpc_lock(struct nfsrv_descript *nd, struct nfsmount *nmp, vnode_t vp, 3962 u_int8_t *nfhp, int fhlen, struct nfscllockowner *lp, int newone, 3963 int reclaim, u_int64_t off, u_int64_t len, short type, struct ucred *cred, 3964 NFSPROC_T *p, int syscred) 3965 { 3966 u_int32_t *tl; 3967 int error, size; 3968 uint8_t own[NFSV4CL_LOCKNAMELEN + NFSX_V4FHMAX]; 3969 3970 nfscl_reqstart(nd, NFSPROC_LOCK, nmp, nfhp, fhlen, NULL, NULL); 3971 NFSM_BUILD(tl, u_int32_t *, 7 * NFSX_UNSIGNED); 3972 if (type == F_RDLCK) 3973 *tl++ = txdr_unsigned(NFSV4LOCKT_READ); 3974 else 3975 *tl++ = txdr_unsigned(NFSV4LOCKT_WRITE); 3976 *tl++ = txdr_unsigned(reclaim); 3977 txdr_hyper(off, tl); 3978 tl += 2; 3979 txdr_hyper(len, tl); 3980 tl += 2; 3981 if (newone) { 3982 *tl = newnfs_true; 3983 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID + 3984 2 * NFSX_UNSIGNED + NFSX_HYPER); 3985 *tl++ = txdr_unsigned(lp->nfsl_open->nfso_own->nfsow_seqid); 3986 if (NFSHASNFSV4N(nmp)) 3987 *tl++ = 0; 3988 else 3989 *tl++ = lp->nfsl_open->nfso_stateid.seqid; 3990 *tl++ = lp->nfsl_open->nfso_stateid.other[0]; 3991 *tl++ = lp->nfsl_open->nfso_stateid.other[1]; 3992 *tl++ = lp->nfsl_open->nfso_stateid.other[2]; 3993 *tl++ = txdr_unsigned(lp->nfsl_seqid); 3994 *tl++ = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[0]; 3995 *tl = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[1]; 3996 NFSBCOPY(lp->nfsl_owner, own, NFSV4CL_LOCKNAMELEN); 3997 NFSBCOPY(nfhp, &own[NFSV4CL_LOCKNAMELEN], fhlen); 3998 (void)nfsm_strtom(nd, own, NFSV4CL_LOCKNAMELEN + fhlen); 3999 } else { 4000 *tl = newnfs_false; 4001 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID + NFSX_UNSIGNED); 4002 if (NFSHASNFSV4N(nmp)) 4003 *tl++ = 0; 4004 else 4005 *tl++ = lp->nfsl_stateid.seqid; 4006 *tl++ = lp->nfsl_stateid.other[0]; 4007 *tl++ = lp->nfsl_stateid.other[1]; 4008 *tl++ = lp->nfsl_stateid.other[2]; 4009 *tl = txdr_unsigned(lp->nfsl_seqid); 4010 if (nfstest_outofseq && 4011 (arc4random() % nfstest_outofseq) == 0) 4012 *tl = txdr_unsigned(lp->nfsl_seqid + 1); 4013 } 4014 if (syscred) 4015 nd->nd_flag |= ND_USEGSSNAME; 4016 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, vp, p, cred, 4017 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4018 if (error) 4019 return (error); 4020 if (newone) 4021 NFSCL_INCRSEQID(lp->nfsl_open->nfso_own->nfsow_seqid, nd); 4022 NFSCL_INCRSEQID(lp->nfsl_seqid, nd); 4023 if (nd->nd_repstat == 0) { 4024 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID); 4025 lp->nfsl_stateid.seqid = *tl++; 4026 lp->nfsl_stateid.other[0] = *tl++; 4027 lp->nfsl_stateid.other[1] = *tl++; 4028 lp->nfsl_stateid.other[2] = *tl; 4029 } else if (nd->nd_repstat == NFSERR_DENIED) { 4030 NFSM_DISSECT(tl, u_int32_t *, 8 * NFSX_UNSIGNED); 4031 size = fxdr_unsigned(int, *(tl + 7)); 4032 if (size < 0 || size > NFSV4_OPAQUELIMIT) 4033 error = EBADRPC; 4034 if (!error) 4035 error = nfsm_advance(nd, NFSM_RNDUP(size), -1); 4036 } else if (nd->nd_repstat == NFSERR_STALESTATEID || 4037 nd->nd_repstat == NFSERR_BADSESSION) 4038 nfscl_initiate_recovery(lp->nfsl_open->nfso_own->nfsow_clp); 4039 nfsmout: 4040 mbuf_freem(nd->nd_mrep); 4041 return (error); 4042 } 4043 4044 /* 4045 * nfs statfs rpc 4046 * (always called with the vp for the mount point) 4047 */ 4048 APPLESTATIC int 4049 nfsrpc_statfs(vnode_t vp, struct nfsstatfs *sbp, struct nfsfsinfo *fsp, 4050 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, 4051 void *stuff) 4052 { 4053 u_int32_t *tl = NULL; 4054 struct nfsrv_descript nfsd, *nd = &nfsd; 4055 struct nfsmount *nmp; 4056 nfsattrbit_t attrbits; 4057 int error; 4058 4059 *attrflagp = 0; 4060 nmp = VFSTONFS(vnode_mount(vp)); 4061 if (NFSHASNFSV4(nmp)) { 4062 /* 4063 * For V4, you actually do a getattr. 4064 */ 4065 NFSCL_REQSTART(nd, NFSPROC_GETATTR, vp); 4066 NFSSTATFS_GETATTRBIT(&attrbits); 4067 (void) nfsrv_putattrbit(nd, &attrbits); 4068 nd->nd_flag |= ND_USEGSSNAME; 4069 error = nfscl_request(nd, vp, p, cred, stuff); 4070 if (error) 4071 return (error); 4072 if (nd->nd_repstat == 0) { 4073 error = nfsv4_loadattr(nd, NULL, nap, NULL, NULL, 0, 4074 NULL, NULL, sbp, fsp, NULL, 0, NULL, NULL, NULL, p, 4075 cred); 4076 if (!error) { 4077 nmp->nm_fsid[0] = nap->na_filesid[0]; 4078 nmp->nm_fsid[1] = nap->na_filesid[1]; 4079 NFSSETHASSETFSID(nmp); 4080 *attrflagp = 1; 4081 } 4082 } else { 4083 error = nd->nd_repstat; 4084 } 4085 if (error) 4086 goto nfsmout; 4087 } else { 4088 NFSCL_REQSTART(nd, NFSPROC_FSSTAT, vp); 4089 error = nfscl_request(nd, vp, p, cred, stuff); 4090 if (error) 4091 return (error); 4092 if (nd->nd_flag & ND_NFSV3) { 4093 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 4094 if (error) 4095 goto nfsmout; 4096 } 4097 if (nd->nd_repstat) { 4098 error = nd->nd_repstat; 4099 goto nfsmout; 4100 } 4101 NFSM_DISSECT(tl, u_int32_t *, 4102 NFSX_STATFS(nd->nd_flag & ND_NFSV3)); 4103 } 4104 if (NFSHASNFSV3(nmp)) { 4105 sbp->sf_tbytes = fxdr_hyper(tl); tl += 2; 4106 sbp->sf_fbytes = fxdr_hyper(tl); tl += 2; 4107 sbp->sf_abytes = fxdr_hyper(tl); tl += 2; 4108 sbp->sf_tfiles = fxdr_hyper(tl); tl += 2; 4109 sbp->sf_ffiles = fxdr_hyper(tl); tl += 2; 4110 sbp->sf_afiles = fxdr_hyper(tl); tl += 2; 4111 sbp->sf_invarsec = fxdr_unsigned(u_int32_t, *tl); 4112 } else if (NFSHASNFSV4(nmp) == 0) { 4113 sbp->sf_tsize = fxdr_unsigned(u_int32_t, *tl++); 4114 sbp->sf_bsize = fxdr_unsigned(u_int32_t, *tl++); 4115 sbp->sf_blocks = fxdr_unsigned(u_int32_t, *tl++); 4116 sbp->sf_bfree = fxdr_unsigned(u_int32_t, *tl++); 4117 sbp->sf_bavail = fxdr_unsigned(u_int32_t, *tl); 4118 } 4119 nfsmout: 4120 mbuf_freem(nd->nd_mrep); 4121 return (error); 4122 } 4123 4124 /* 4125 * nfs pathconf rpc 4126 */ 4127 APPLESTATIC int 4128 nfsrpc_pathconf(vnode_t vp, struct nfsv3_pathconf *pc, 4129 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, 4130 void *stuff) 4131 { 4132 struct nfsrv_descript nfsd, *nd = &nfsd; 4133 struct nfsmount *nmp; 4134 u_int32_t *tl; 4135 nfsattrbit_t attrbits; 4136 int error; 4137 4138 *attrflagp = 0; 4139 nmp = VFSTONFS(vnode_mount(vp)); 4140 if (NFSHASNFSV4(nmp)) { 4141 /* 4142 * For V4, you actually do a getattr. 4143 */ 4144 NFSCL_REQSTART(nd, NFSPROC_GETATTR, vp); 4145 NFSPATHCONF_GETATTRBIT(&attrbits); 4146 (void) nfsrv_putattrbit(nd, &attrbits); 4147 nd->nd_flag |= ND_USEGSSNAME; 4148 error = nfscl_request(nd, vp, p, cred, stuff); 4149 if (error) 4150 return (error); 4151 if (nd->nd_repstat == 0) { 4152 error = nfsv4_loadattr(nd, NULL, nap, NULL, NULL, 0, 4153 pc, NULL, NULL, NULL, NULL, 0, NULL, NULL, NULL, p, 4154 cred); 4155 if (!error) 4156 *attrflagp = 1; 4157 } else { 4158 error = nd->nd_repstat; 4159 } 4160 } else { 4161 NFSCL_REQSTART(nd, NFSPROC_PATHCONF, vp); 4162 error = nfscl_request(nd, vp, p, cred, stuff); 4163 if (error) 4164 return (error); 4165 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 4166 if (nd->nd_repstat && !error) 4167 error = nd->nd_repstat; 4168 if (!error) { 4169 NFSM_DISSECT(tl, u_int32_t *, NFSX_V3PATHCONF); 4170 pc->pc_linkmax = fxdr_unsigned(u_int32_t, *tl++); 4171 pc->pc_namemax = fxdr_unsigned(u_int32_t, *tl++); 4172 pc->pc_notrunc = fxdr_unsigned(u_int32_t, *tl++); 4173 pc->pc_chownrestricted = 4174 fxdr_unsigned(u_int32_t, *tl++); 4175 pc->pc_caseinsensitive = 4176 fxdr_unsigned(u_int32_t, *tl++); 4177 pc->pc_casepreserving = fxdr_unsigned(u_int32_t, *tl); 4178 } 4179 } 4180 nfsmout: 4181 mbuf_freem(nd->nd_mrep); 4182 return (error); 4183 } 4184 4185 /* 4186 * nfs version 3 fsinfo rpc call 4187 */ 4188 APPLESTATIC int 4189 nfsrpc_fsinfo(vnode_t vp, struct nfsfsinfo *fsp, struct ucred *cred, 4190 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff) 4191 { 4192 u_int32_t *tl; 4193 struct nfsrv_descript nfsd, *nd = &nfsd; 4194 int error; 4195 4196 *attrflagp = 0; 4197 NFSCL_REQSTART(nd, NFSPROC_FSINFO, vp); 4198 error = nfscl_request(nd, vp, p, cred, stuff); 4199 if (error) 4200 return (error); 4201 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 4202 if (nd->nd_repstat && !error) 4203 error = nd->nd_repstat; 4204 if (!error) { 4205 NFSM_DISSECT(tl, u_int32_t *, NFSX_V3FSINFO); 4206 fsp->fs_rtmax = fxdr_unsigned(u_int32_t, *tl++); 4207 fsp->fs_rtpref = fxdr_unsigned(u_int32_t, *tl++); 4208 fsp->fs_rtmult = fxdr_unsigned(u_int32_t, *tl++); 4209 fsp->fs_wtmax = fxdr_unsigned(u_int32_t, *tl++); 4210 fsp->fs_wtpref = fxdr_unsigned(u_int32_t, *tl++); 4211 fsp->fs_wtmult = fxdr_unsigned(u_int32_t, *tl++); 4212 fsp->fs_dtpref = fxdr_unsigned(u_int32_t, *tl++); 4213 fsp->fs_maxfilesize = fxdr_hyper(tl); 4214 tl += 2; 4215 fxdr_nfsv3time(tl, &fsp->fs_timedelta); 4216 tl += 2; 4217 fsp->fs_properties = fxdr_unsigned(u_int32_t, *tl); 4218 } 4219 nfsmout: 4220 mbuf_freem(nd->nd_mrep); 4221 return (error); 4222 } 4223 4224 /* 4225 * This function performs the Renew RPC. 4226 */ 4227 APPLESTATIC int 4228 nfsrpc_renew(struct nfsclclient *clp, struct nfsclds *dsp, struct ucred *cred, 4229 NFSPROC_T *p) 4230 { 4231 u_int32_t *tl; 4232 struct nfsrv_descript nfsd; 4233 struct nfsrv_descript *nd = &nfsd; 4234 struct nfsmount *nmp; 4235 int error; 4236 struct nfssockreq *nrp; 4237 4238 nmp = clp->nfsc_nmp; 4239 if (nmp == NULL) 4240 return (0); 4241 nfscl_reqstart(nd, NFSPROC_RENEW, nmp, NULL, 0, NULL, 4242 &dsp->nfsclds_sess); 4243 if (!NFSHASNFSV4N(nmp)) { 4244 /* NFSv4.1 just uses a Sequence Op and not a Renew. */ 4245 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 4246 *tl++ = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[0]; 4247 *tl = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[1]; 4248 } 4249 nrp = dsp->nfsclds_sockp; 4250 if (nrp == NULL) 4251 /* If NULL, use the MDS socket. */ 4252 nrp = &nmp->nm_sockreq; 4253 nd->nd_flag |= ND_USEGSSNAME; 4254 error = newnfs_request(nd, nmp, NULL, nrp, NULL, p, cred, 4255 NFS_PROG, NFS_VER4, NULL, 1, NULL, &dsp->nfsclds_sess); 4256 if (error) 4257 return (error); 4258 error = nd->nd_repstat; 4259 mbuf_freem(nd->nd_mrep); 4260 return (error); 4261 } 4262 4263 /* 4264 * This function performs the Releaselockowner RPC. 4265 */ 4266 APPLESTATIC int 4267 nfsrpc_rellockown(struct nfsmount *nmp, struct nfscllockowner *lp, 4268 uint8_t *fh, int fhlen, struct ucred *cred, NFSPROC_T *p) 4269 { 4270 struct nfsrv_descript nfsd, *nd = &nfsd; 4271 u_int32_t *tl; 4272 int error; 4273 uint8_t own[NFSV4CL_LOCKNAMELEN + NFSX_V4FHMAX]; 4274 4275 if (NFSHASNFSV4N(nmp)) { 4276 /* For NFSv4.1, do a FreeStateID. */ 4277 nfscl_reqstart(nd, NFSPROC_FREESTATEID, nmp, NULL, 0, NULL, 4278 NULL); 4279 nfsm_stateidtom(nd, &lp->nfsl_stateid, NFSSTATEID_PUTSTATEID); 4280 } else { 4281 nfscl_reqstart(nd, NFSPROC_RELEASELCKOWN, nmp, NULL, 0, NULL, 4282 NULL); 4283 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 4284 *tl++ = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[0]; 4285 *tl = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[1]; 4286 NFSBCOPY(lp->nfsl_owner, own, NFSV4CL_LOCKNAMELEN); 4287 NFSBCOPY(fh, &own[NFSV4CL_LOCKNAMELEN], fhlen); 4288 (void)nfsm_strtom(nd, own, NFSV4CL_LOCKNAMELEN + fhlen); 4289 } 4290 nd->nd_flag |= ND_USEGSSNAME; 4291 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 4292 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4293 if (error) 4294 return (error); 4295 error = nd->nd_repstat; 4296 mbuf_freem(nd->nd_mrep); 4297 return (error); 4298 } 4299 4300 /* 4301 * This function performs the Compound to get the mount pt FH. 4302 */ 4303 APPLESTATIC int 4304 nfsrpc_getdirpath(struct nfsmount *nmp, u_char *dirpath, struct ucred *cred, 4305 NFSPROC_T *p) 4306 { 4307 u_int32_t *tl; 4308 struct nfsrv_descript nfsd; 4309 struct nfsrv_descript *nd = &nfsd; 4310 u_char *cp, *cp2; 4311 int error, cnt, len, setnil; 4312 u_int32_t *opcntp; 4313 4314 nfscl_reqstart(nd, NFSPROC_PUTROOTFH, nmp, NULL, 0, &opcntp, NULL); 4315 cp = dirpath; 4316 cnt = 0; 4317 do { 4318 setnil = 0; 4319 while (*cp == '/') 4320 cp++; 4321 cp2 = cp; 4322 while (*cp2 != '\0' && *cp2 != '/') 4323 cp2++; 4324 if (*cp2 == '/') { 4325 setnil = 1; 4326 *cp2 = '\0'; 4327 } 4328 if (cp2 != cp) { 4329 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 4330 *tl = txdr_unsigned(NFSV4OP_LOOKUP); 4331 nfsm_strtom(nd, cp, strlen(cp)); 4332 cnt++; 4333 } 4334 if (setnil) 4335 *cp2++ = '/'; 4336 cp = cp2; 4337 } while (*cp != '\0'); 4338 if (NFSHASNFSV4N(nmp)) 4339 /* Has a Sequence Op done by nfscl_reqstart(). */ 4340 *opcntp = txdr_unsigned(3 + cnt); 4341 else 4342 *opcntp = txdr_unsigned(2 + cnt); 4343 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 4344 *tl = txdr_unsigned(NFSV4OP_GETFH); 4345 nd->nd_flag |= ND_USEGSSNAME; 4346 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 4347 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4348 if (error) 4349 return (error); 4350 if (nd->nd_repstat == 0) { 4351 NFSM_DISSECT(tl, u_int32_t *, (3 + 2 * cnt) * NFSX_UNSIGNED); 4352 tl += (2 + 2 * cnt); 4353 if ((len = fxdr_unsigned(int, *tl)) <= 0 || 4354 len > NFSX_FHMAX) { 4355 nd->nd_repstat = NFSERR_BADXDR; 4356 } else { 4357 nd->nd_repstat = nfsrv_mtostr(nd, nmp->nm_fh, len); 4358 if (nd->nd_repstat == 0) 4359 nmp->nm_fhsize = len; 4360 } 4361 } 4362 error = nd->nd_repstat; 4363 nfsmout: 4364 mbuf_freem(nd->nd_mrep); 4365 return (error); 4366 } 4367 4368 /* 4369 * This function performs the Delegreturn RPC. 4370 */ 4371 APPLESTATIC int 4372 nfsrpc_delegreturn(struct nfscldeleg *dp, struct ucred *cred, 4373 struct nfsmount *nmp, NFSPROC_T *p, int syscred) 4374 { 4375 u_int32_t *tl; 4376 struct nfsrv_descript nfsd; 4377 struct nfsrv_descript *nd = &nfsd; 4378 int error; 4379 4380 nfscl_reqstart(nd, NFSPROC_DELEGRETURN, nmp, dp->nfsdl_fh, 4381 dp->nfsdl_fhlen, NULL, NULL); 4382 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID); 4383 if (NFSHASNFSV4N(nmp)) 4384 *tl++ = 0; 4385 else 4386 *tl++ = dp->nfsdl_stateid.seqid; 4387 *tl++ = dp->nfsdl_stateid.other[0]; 4388 *tl++ = dp->nfsdl_stateid.other[1]; 4389 *tl = dp->nfsdl_stateid.other[2]; 4390 if (syscred) 4391 nd->nd_flag |= ND_USEGSSNAME; 4392 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 4393 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4394 if (error) 4395 return (error); 4396 error = nd->nd_repstat; 4397 mbuf_freem(nd->nd_mrep); 4398 return (error); 4399 } 4400 4401 /* 4402 * nfs getacl call. 4403 */ 4404 APPLESTATIC int 4405 nfsrpc_getacl(vnode_t vp, struct ucred *cred, NFSPROC_T *p, 4406 struct acl *aclp, void *stuff) 4407 { 4408 struct nfsrv_descript nfsd, *nd = &nfsd; 4409 int error; 4410 nfsattrbit_t attrbits; 4411 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 4412 4413 if (nfsrv_useacl == 0 || !NFSHASNFSV4(nmp)) 4414 return (EOPNOTSUPP); 4415 NFSCL_REQSTART(nd, NFSPROC_GETACL, vp); 4416 NFSZERO_ATTRBIT(&attrbits); 4417 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_ACL); 4418 (void) nfsrv_putattrbit(nd, &attrbits); 4419 error = nfscl_request(nd, vp, p, cred, stuff); 4420 if (error) 4421 return (error); 4422 if (!nd->nd_repstat) 4423 error = nfsv4_loadattr(nd, vp, NULL, NULL, NULL, 0, NULL, 4424 NULL, NULL, NULL, aclp, 0, NULL, NULL, NULL, p, cred); 4425 else 4426 error = nd->nd_repstat; 4427 mbuf_freem(nd->nd_mrep); 4428 return (error); 4429 } 4430 4431 /* 4432 * nfs setacl call. 4433 */ 4434 APPLESTATIC int 4435 nfsrpc_setacl(vnode_t vp, struct ucred *cred, NFSPROC_T *p, 4436 struct acl *aclp, void *stuff) 4437 { 4438 int error; 4439 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 4440 4441 if (nfsrv_useacl == 0 || !NFSHASNFSV4(nmp)) 4442 return (EOPNOTSUPP); 4443 error = nfsrpc_setattr(vp, NULL, aclp, cred, p, NULL, NULL, stuff); 4444 return (error); 4445 } 4446 4447 /* 4448 * nfs setacl call. 4449 */ 4450 static int 4451 nfsrpc_setaclrpc(vnode_t vp, struct ucred *cred, NFSPROC_T *p, 4452 struct acl *aclp, nfsv4stateid_t *stateidp, void *stuff) 4453 { 4454 struct nfsrv_descript nfsd, *nd = &nfsd; 4455 int error; 4456 nfsattrbit_t attrbits; 4457 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 4458 4459 if (!NFSHASNFSV4(nmp)) 4460 return (EOPNOTSUPP); 4461 NFSCL_REQSTART(nd, NFSPROC_SETACL, vp); 4462 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID); 4463 NFSZERO_ATTRBIT(&attrbits); 4464 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_ACL); 4465 (void) nfsv4_fillattr(nd, vnode_mount(vp), vp, aclp, NULL, NULL, 0, 4466 &attrbits, NULL, NULL, 0, 0, 0, 0, (uint64_t)0); 4467 error = nfscl_request(nd, vp, p, cred, stuff); 4468 if (error) 4469 return (error); 4470 /* Don't care about the pre/postop attributes */ 4471 mbuf_freem(nd->nd_mrep); 4472 return (nd->nd_repstat); 4473 } 4474 4475 /* 4476 * Do the NFSv4.1 Exchange ID. 4477 */ 4478 int 4479 nfsrpc_exchangeid(struct nfsmount *nmp, struct nfsclclient *clp, 4480 struct nfssockreq *nrp, uint32_t exchflags, struct nfsclds **dspp, 4481 struct ucred *cred, NFSPROC_T *p) 4482 { 4483 uint32_t *tl, v41flags; 4484 struct nfsrv_descript nfsd; 4485 struct nfsrv_descript *nd = &nfsd; 4486 struct nfsclds *dsp; 4487 struct timespec verstime; 4488 int error, len; 4489 4490 *dspp = NULL; 4491 nfscl_reqstart(nd, NFSPROC_EXCHANGEID, nmp, NULL, 0, NULL, NULL); 4492 NFSM_BUILD(tl, uint32_t *, 2 * NFSX_UNSIGNED); 4493 *tl++ = txdr_unsigned(nfsboottime.tv_sec); /* Client owner */ 4494 *tl = txdr_unsigned(clp->nfsc_rev); 4495 (void) nfsm_strtom(nd, clp->nfsc_id, clp->nfsc_idlen); 4496 4497 NFSM_BUILD(tl, uint32_t *, 3 * NFSX_UNSIGNED); 4498 *tl++ = txdr_unsigned(exchflags); 4499 *tl++ = txdr_unsigned(NFSV4EXCH_SP4NONE); 4500 4501 /* Set the implementation id4 */ 4502 *tl = txdr_unsigned(1); 4503 (void) nfsm_strtom(nd, "freebsd.org", strlen("freebsd.org")); 4504 (void) nfsm_strtom(nd, version, strlen(version)); 4505 NFSM_BUILD(tl, uint32_t *, NFSX_V4TIME); 4506 verstime.tv_sec = 1293840000; /* Jan 1, 2011 */ 4507 verstime.tv_nsec = 0; 4508 txdr_nfsv4time(&verstime, tl); 4509 nd->nd_flag |= ND_USEGSSNAME; 4510 error = newnfs_request(nd, nmp, NULL, nrp, NULL, p, cred, 4511 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4512 NFSCL_DEBUG(1, "exchangeid err=%d reps=%d\n", error, 4513 (int)nd->nd_repstat); 4514 if (error != 0) 4515 return (error); 4516 if (nd->nd_repstat == 0) { 4517 NFSM_DISSECT(tl, uint32_t *, 6 * NFSX_UNSIGNED + NFSX_HYPER); 4518 len = fxdr_unsigned(int, *(tl + 7)); 4519 if (len < 0 || len > NFSV4_OPAQUELIMIT) { 4520 error = NFSERR_BADXDR; 4521 goto nfsmout; 4522 } 4523 dsp = malloc(sizeof(struct nfsclds) + len, M_NFSCLDS, 4524 M_WAITOK | M_ZERO); 4525 dsp->nfsclds_expire = NFSD_MONOSEC + clp->nfsc_renew; 4526 dsp->nfsclds_servownlen = len; 4527 dsp->nfsclds_sess.nfsess_clientid.lval[0] = *tl++; 4528 dsp->nfsclds_sess.nfsess_clientid.lval[1] = *tl++; 4529 dsp->nfsclds_sess.nfsess_sequenceid = 4530 fxdr_unsigned(uint32_t, *tl++); 4531 v41flags = fxdr_unsigned(uint32_t, *tl); 4532 if ((v41flags & NFSV4EXCH_USEPNFSMDS) != 0 && 4533 NFSHASPNFSOPT(nmp)) { 4534 NFSCL_DEBUG(1, "set PNFS\n"); 4535 NFSLOCKMNT(nmp); 4536 nmp->nm_state |= NFSSTA_PNFS; 4537 NFSUNLOCKMNT(nmp); 4538 dsp->nfsclds_flags |= NFSCLDS_MDS; 4539 } 4540 if ((v41flags & NFSV4EXCH_USEPNFSDS) != 0) 4541 dsp->nfsclds_flags |= NFSCLDS_DS; 4542 if (len > 0) 4543 nd->nd_repstat = nfsrv_mtostr(nd, 4544 dsp->nfsclds_serverown, len); 4545 if (nd->nd_repstat == 0) { 4546 mtx_init(&dsp->nfsclds_mtx, "nfsds", NULL, MTX_DEF); 4547 mtx_init(&dsp->nfsclds_sess.nfsess_mtx, "nfssession", 4548 NULL, MTX_DEF); 4549 nfscl_initsessionslots(&dsp->nfsclds_sess); 4550 *dspp = dsp; 4551 } else 4552 free(dsp, M_NFSCLDS); 4553 } 4554 error = nd->nd_repstat; 4555 nfsmout: 4556 mbuf_freem(nd->nd_mrep); 4557 return (error); 4558 } 4559 4560 /* 4561 * Do the NFSv4.1 Create Session. 4562 */ 4563 int 4564 nfsrpc_createsession(struct nfsmount *nmp, struct nfsclsession *sep, 4565 struct nfssockreq *nrp, uint32_t sequenceid, int mds, struct ucred *cred, 4566 NFSPROC_T *p) 4567 { 4568 uint32_t crflags, *tl; 4569 struct nfsrv_descript nfsd; 4570 struct nfsrv_descript *nd = &nfsd; 4571 int error, irdcnt; 4572 4573 nfscl_reqstart(nd, NFSPROC_CREATESESSION, nmp, NULL, 0, NULL, NULL); 4574 NFSM_BUILD(tl, uint32_t *, 4 * NFSX_UNSIGNED); 4575 *tl++ = sep->nfsess_clientid.lval[0]; 4576 *tl++ = sep->nfsess_clientid.lval[1]; 4577 *tl++ = txdr_unsigned(sequenceid); 4578 crflags = (NFSMNT_RDONLY(nmp->nm_mountp) ? 0 : NFSV4CRSESS_PERSIST); 4579 if (nfscl_enablecallb != 0 && nfs_numnfscbd > 0) 4580 crflags |= NFSV4CRSESS_CONNBACKCHAN; 4581 *tl = txdr_unsigned(crflags); 4582 4583 /* Fill in fore channel attributes. */ 4584 NFSM_BUILD(tl, uint32_t *, 7 * NFSX_UNSIGNED); 4585 *tl++ = 0; /* Header pad size */ 4586 *tl++ = txdr_unsigned(100000); /* Max request size */ 4587 *tl++ = txdr_unsigned(100000); /* Max response size */ 4588 *tl++ = txdr_unsigned(4096); /* Max response size cached */ 4589 *tl++ = txdr_unsigned(20); /* Max operations */ 4590 *tl++ = txdr_unsigned(64); /* Max slots */ 4591 *tl = 0; /* No rdma ird */ 4592 4593 /* Fill in back channel attributes. */ 4594 NFSM_BUILD(tl, uint32_t *, 7 * NFSX_UNSIGNED); 4595 *tl++ = 0; /* Header pad size */ 4596 *tl++ = txdr_unsigned(10000); /* Max request size */ 4597 *tl++ = txdr_unsigned(10000); /* Max response size */ 4598 *tl++ = txdr_unsigned(4096); /* Max response size cached */ 4599 *tl++ = txdr_unsigned(4); /* Max operations */ 4600 *tl++ = txdr_unsigned(NFSV4_CBSLOTS); /* Max slots */ 4601 *tl = 0; /* No rdma ird */ 4602 4603 NFSM_BUILD(tl, uint32_t *, 8 * NFSX_UNSIGNED); 4604 *tl++ = txdr_unsigned(NFS_CALLBCKPROG); /* Call back prog # */ 4605 4606 /* Allow AUTH_SYS callbacks as uid, gid == 0. */ 4607 *tl++ = txdr_unsigned(1); /* Auth_sys only */ 4608 *tl++ = txdr_unsigned(AUTH_SYS); /* AUTH_SYS type */ 4609 *tl++ = txdr_unsigned(nfsboottime.tv_sec); /* time stamp */ 4610 *tl++ = 0; /* Null machine name */ 4611 *tl++ = 0; /* Uid == 0 */ 4612 *tl++ = 0; /* Gid == 0 */ 4613 *tl = 0; /* No additional gids */ 4614 nd->nd_flag |= ND_USEGSSNAME; 4615 error = newnfs_request(nd, nmp, NULL, nrp, NULL, p, cred, NFS_PROG, 4616 NFS_VER4, NULL, 1, NULL, NULL); 4617 if (error != 0) 4618 return (error); 4619 if (nd->nd_repstat == 0) { 4620 NFSM_DISSECT(tl, uint32_t *, NFSX_V4SESSIONID + 4621 2 * NFSX_UNSIGNED); 4622 bcopy(tl, sep->nfsess_sessionid, NFSX_V4SESSIONID); 4623 tl += NFSX_V4SESSIONID / NFSX_UNSIGNED; 4624 sep->nfsess_sequenceid = fxdr_unsigned(uint32_t, *tl++); 4625 crflags = fxdr_unsigned(uint32_t, *tl); 4626 if ((crflags & NFSV4CRSESS_PERSIST) != 0 && mds != 0) { 4627 NFSLOCKMNT(nmp); 4628 nmp->nm_state |= NFSSTA_SESSPERSIST; 4629 NFSUNLOCKMNT(nmp); 4630 } 4631 4632 /* Get the fore channel slot count. */ 4633 NFSM_DISSECT(tl, uint32_t *, 7 * NFSX_UNSIGNED); 4634 tl += 3; /* Skip the other counts. */ 4635 sep->nfsess_maxcache = fxdr_unsigned(int, *tl++); 4636 tl++; 4637 sep->nfsess_foreslots = fxdr_unsigned(uint16_t, *tl++); 4638 NFSCL_DEBUG(4, "fore slots=%d\n", (int)sep->nfsess_foreslots); 4639 irdcnt = fxdr_unsigned(int, *tl); 4640 if (irdcnt > 0) 4641 NFSM_DISSECT(tl, uint32_t *, irdcnt * NFSX_UNSIGNED); 4642 4643 /* and the back channel slot count. */ 4644 NFSM_DISSECT(tl, uint32_t *, 7 * NFSX_UNSIGNED); 4645 tl += 5; 4646 sep->nfsess_backslots = fxdr_unsigned(uint16_t, *tl); 4647 NFSCL_DEBUG(4, "back slots=%d\n", (int)sep->nfsess_backslots); 4648 } 4649 error = nd->nd_repstat; 4650 nfsmout: 4651 mbuf_freem(nd->nd_mrep); 4652 return (error); 4653 } 4654 4655 /* 4656 * Do the NFSv4.1 Destroy Session. 4657 */ 4658 int 4659 nfsrpc_destroysession(struct nfsmount *nmp, struct nfsclclient *clp, 4660 struct ucred *cred, NFSPROC_T *p) 4661 { 4662 uint32_t *tl; 4663 struct nfsrv_descript nfsd; 4664 struct nfsrv_descript *nd = &nfsd; 4665 int error; 4666 4667 nfscl_reqstart(nd, NFSPROC_DESTROYSESSION, nmp, NULL, 0, NULL, NULL); 4668 NFSM_BUILD(tl, uint32_t *, NFSX_V4SESSIONID); 4669 bcopy(NFSMNT_MDSSESSION(nmp)->nfsess_sessionid, tl, NFSX_V4SESSIONID); 4670 nd->nd_flag |= ND_USEGSSNAME; 4671 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 4672 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4673 if (error != 0) 4674 return (error); 4675 error = nd->nd_repstat; 4676 mbuf_freem(nd->nd_mrep); 4677 return (error); 4678 } 4679 4680 /* 4681 * Do the NFSv4.1 Destroy Client. 4682 */ 4683 int 4684 nfsrpc_destroyclient(struct nfsmount *nmp, struct nfsclclient *clp, 4685 struct ucred *cred, NFSPROC_T *p) 4686 { 4687 uint32_t *tl; 4688 struct nfsrv_descript nfsd; 4689 struct nfsrv_descript *nd = &nfsd; 4690 int error; 4691 4692 nfscl_reqstart(nd, NFSPROC_DESTROYCLIENT, nmp, NULL, 0, NULL, NULL); 4693 NFSM_BUILD(tl, uint32_t *, 2 * NFSX_UNSIGNED); 4694 *tl++ = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[0]; 4695 *tl = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[1]; 4696 nd->nd_flag |= ND_USEGSSNAME; 4697 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 4698 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4699 if (error != 0) 4700 return (error); 4701 error = nd->nd_repstat; 4702 mbuf_freem(nd->nd_mrep); 4703 return (error); 4704 } 4705 4706 /* 4707 * Do the NFSv4.1 LayoutGet. 4708 */ 4709 int 4710 nfsrpc_layoutget(struct nfsmount *nmp, uint8_t *fhp, int fhlen, int iomode, 4711 uint64_t offset, uint64_t len, uint64_t minlen, int layoutlen, 4712 nfsv4stateid_t *stateidp, int *retonclosep, struct nfsclflayouthead *flhp, 4713 struct ucred *cred, NFSPROC_T *p, void *stuff) 4714 { 4715 uint32_t *tl; 4716 struct nfsrv_descript nfsd, *nd = &nfsd; 4717 struct nfsfh *nfhp; 4718 struct nfsclflayout *flp, *prevflp, *tflp; 4719 int cnt, error, gotiomode, fhcnt, nfhlen, i, j; 4720 uint8_t *cp; 4721 uint64_t retlen; 4722 4723 flp = NULL; 4724 gotiomode = -1; 4725 nfscl_reqstart(nd, NFSPROC_LAYOUTGET, nmp, fhp, fhlen, NULL, NULL); 4726 NFSM_BUILD(tl, uint32_t *, 4 * NFSX_UNSIGNED + 3 * NFSX_HYPER + 4727 NFSX_STATEID); 4728 *tl++ = newnfs_false; /* Don't signal availability. */ 4729 *tl++ = txdr_unsigned(NFSLAYOUT_NFSV4_1_FILES); 4730 *tl++ = txdr_unsigned(iomode); 4731 txdr_hyper(offset, tl); 4732 tl += 2; 4733 txdr_hyper(len, tl); 4734 tl += 2; 4735 txdr_hyper(minlen, tl); 4736 tl += 2; 4737 *tl++ = txdr_unsigned(stateidp->seqid); 4738 NFSCL_DEBUG(4, "layget seq=%d\n", (int)stateidp->seqid); 4739 *tl++ = stateidp->other[0]; 4740 *tl++ = stateidp->other[1]; 4741 *tl++ = stateidp->other[2]; 4742 *tl = txdr_unsigned(layoutlen); 4743 nd->nd_flag |= ND_USEGSSNAME; 4744 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 4745 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4746 if (error != 0) 4747 return (error); 4748 if (nd->nd_repstat == 0) { 4749 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED + NFSX_STATEID); 4750 if (*tl++ != 0) 4751 *retonclosep = 1; 4752 else 4753 *retonclosep = 0; 4754 stateidp->seqid = fxdr_unsigned(uint32_t, *tl++); 4755 NFSCL_DEBUG(4, "retoncls=%d stseq=%d\n", *retonclosep, 4756 (int)stateidp->seqid); 4757 stateidp->other[0] = *tl++; 4758 stateidp->other[1] = *tl++; 4759 stateidp->other[2] = *tl++; 4760 cnt = fxdr_unsigned(int, *tl); 4761 NFSCL_DEBUG(4, "layg cnt=%d\n", cnt); 4762 if (cnt <= 0 || cnt > 10000) { 4763 /* Don't accept more than 10000 layouts in reply. */ 4764 error = NFSERR_BADXDR; 4765 goto nfsmout; 4766 } 4767 for (i = 0; i < cnt; i++) { 4768 /* Dissect all the way to the file handle cnt. */ 4769 NFSM_DISSECT(tl, uint32_t *, 3 * NFSX_HYPER + 4770 6 * NFSX_UNSIGNED + NFSX_V4DEVICEID); 4771 fhcnt = fxdr_unsigned(int, *(tl + 11 + 4772 NFSX_V4DEVICEID / NFSX_UNSIGNED)); 4773 NFSCL_DEBUG(4, "fhcnt=%d\n", fhcnt); 4774 if (fhcnt < 0 || fhcnt > 100) { 4775 /* Don't accept more than 100 file handles. */ 4776 error = NFSERR_BADXDR; 4777 goto nfsmout; 4778 } 4779 if (fhcnt > 1) 4780 flp = malloc(sizeof(*flp) + (fhcnt - 1) * 4781 sizeof(struct nfsfh *), 4782 M_NFSFLAYOUT, M_WAITOK); 4783 else 4784 flp = malloc(sizeof(*flp), 4785 M_NFSFLAYOUT, M_WAITOK); 4786 flp->nfsfl_flags = 0; 4787 flp->nfsfl_fhcnt = 0; 4788 flp->nfsfl_devp = NULL; 4789 flp->nfsfl_off = fxdr_hyper(tl); tl += 2; 4790 retlen = fxdr_hyper(tl); tl += 2; 4791 if (flp->nfsfl_off + retlen < flp->nfsfl_off) 4792 flp->nfsfl_end = UINT64_MAX - flp->nfsfl_off; 4793 else 4794 flp->nfsfl_end = flp->nfsfl_off + retlen; 4795 flp->nfsfl_iomode = fxdr_unsigned(int, *tl++); 4796 if (gotiomode == -1) 4797 gotiomode = flp->nfsfl_iomode; 4798 NFSCL_DEBUG(4, "layg reqiom=%d retiom=%d\n", iomode, 4799 (int)flp->nfsfl_iomode); 4800 if (fxdr_unsigned(int, *tl++) != 4801 NFSLAYOUT_NFSV4_1_FILES) { 4802 printf("NFSv4.1: got non-files layout\n"); 4803 error = NFSERR_BADXDR; 4804 goto nfsmout; 4805 } 4806 NFSBCOPY(++tl, flp->nfsfl_dev, NFSX_V4DEVICEID); 4807 tl += (NFSX_V4DEVICEID / NFSX_UNSIGNED); 4808 flp->nfsfl_util = fxdr_unsigned(uint32_t, *tl++); 4809 NFSCL_DEBUG(4, "flutil=0x%x\n", flp->nfsfl_util); 4810 flp->nfsfl_stripe1 = fxdr_unsigned(uint32_t, *tl++); 4811 flp->nfsfl_patoff = fxdr_hyper(tl); tl += 2; 4812 if (fxdr_unsigned(int, *tl) != fhcnt) { 4813 printf("EEK! bad fhcnt\n"); 4814 error = NFSERR_BADXDR; 4815 goto nfsmout; 4816 } 4817 for (j = 0; j < fhcnt; j++) { 4818 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 4819 nfhlen = fxdr_unsigned(int, *tl); 4820 if (nfhlen <= 0 || nfhlen > NFSX_V4FHMAX) { 4821 error = NFSERR_BADXDR; 4822 goto nfsmout; 4823 } 4824 nfhp = malloc(sizeof(*nfhp) + nfhlen - 1, 4825 M_NFSFH, M_WAITOK); 4826 flp->nfsfl_fh[j] = nfhp; 4827 flp->nfsfl_fhcnt++; 4828 nfhp->nfh_len = nfhlen; 4829 NFSM_DISSECT(cp, uint8_t *, NFSM_RNDUP(nfhlen)); 4830 NFSBCOPY(cp, nfhp->nfh_fh, nfhlen); 4831 } 4832 if (flp->nfsfl_iomode == gotiomode) { 4833 /* Keep the list in increasing offset order. */ 4834 tflp = LIST_FIRST(flhp); 4835 prevflp = NULL; 4836 while (tflp != NULL && 4837 tflp->nfsfl_off < flp->nfsfl_off) { 4838 prevflp = tflp; 4839 tflp = LIST_NEXT(tflp, nfsfl_list); 4840 } 4841 if (prevflp == NULL) 4842 LIST_INSERT_HEAD(flhp, flp, nfsfl_list); 4843 else 4844 LIST_INSERT_AFTER(prevflp, flp, 4845 nfsfl_list); 4846 } else { 4847 printf("nfscl_layoutget(): got wrong iomode\n"); 4848 nfscl_freeflayout(flp); 4849 } 4850 flp = NULL; 4851 } 4852 } 4853 if (nd->nd_repstat != 0 && error == 0) 4854 error = nd->nd_repstat; 4855 nfsmout: 4856 if (error != 0 && flp != NULL) 4857 nfscl_freeflayout(flp); 4858 mbuf_freem(nd->nd_mrep); 4859 return (error); 4860 } 4861 4862 /* 4863 * Do the NFSv4.1 Get Device Info. 4864 */ 4865 int 4866 nfsrpc_getdeviceinfo(struct nfsmount *nmp, uint8_t *deviceid, int layouttype, 4867 uint32_t *notifybitsp, struct nfscldevinfo **ndip, struct ucred *cred, 4868 NFSPROC_T *p) 4869 { 4870 uint32_t cnt, *tl; 4871 struct nfsrv_descript nfsd; 4872 struct nfsrv_descript *nd = &nfsd; 4873 struct sockaddr_storage ss; 4874 struct nfsclds *dsp = NULL, **dspp; 4875 struct nfscldevinfo *ndi; 4876 int addrcnt, bitcnt, error, i, isudp, j, pos, safilled, stripecnt; 4877 uint8_t stripeindex; 4878 4879 *ndip = NULL; 4880 ndi = NULL; 4881 nfscl_reqstart(nd, NFSPROC_GETDEVICEINFO, nmp, NULL, 0, NULL, NULL); 4882 NFSM_BUILD(tl, uint32_t *, NFSX_V4DEVICEID + 3 * NFSX_UNSIGNED); 4883 NFSBCOPY(deviceid, tl, NFSX_V4DEVICEID); 4884 tl += (NFSX_V4DEVICEID / NFSX_UNSIGNED); 4885 *tl++ = txdr_unsigned(layouttype); 4886 *tl++ = txdr_unsigned(100000); 4887 if (notifybitsp != NULL && *notifybitsp != 0) { 4888 *tl = txdr_unsigned(1); /* One word of bits. */ 4889 NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED); 4890 *tl = txdr_unsigned(*notifybitsp); 4891 } else 4892 *tl = txdr_unsigned(0); 4893 nd->nd_flag |= ND_USEGSSNAME; 4894 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 4895 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4896 if (error != 0) 4897 return (error); 4898 if (nd->nd_repstat == 0) { 4899 NFSM_DISSECT(tl, uint32_t *, 3 * NFSX_UNSIGNED); 4900 if (layouttype != fxdr_unsigned(int, *tl++)) 4901 printf("EEK! devinfo layout type not same!\n"); 4902 stripecnt = fxdr_unsigned(int, *++tl); 4903 NFSCL_DEBUG(4, "stripecnt=%d\n", stripecnt); 4904 if (stripecnt < 1 || stripecnt > 4096) { 4905 printf("NFS devinfo stripecnt %d: out of range\n", 4906 stripecnt); 4907 error = NFSERR_BADXDR; 4908 goto nfsmout; 4909 } 4910 NFSM_DISSECT(tl, uint32_t *, (stripecnt + 1) * NFSX_UNSIGNED); 4911 addrcnt = fxdr_unsigned(int, *(tl + stripecnt)); 4912 NFSCL_DEBUG(4, "addrcnt=%d\n", addrcnt); 4913 if (addrcnt < 1 || addrcnt > 128) { 4914 printf("NFS devinfo addrcnt %d: out of range\n", 4915 addrcnt); 4916 error = NFSERR_BADXDR; 4917 goto nfsmout; 4918 } 4919 4920 /* 4921 * Now we know how many stripe indices and addresses, so 4922 * we can allocate the structure the correct size. 4923 */ 4924 i = (stripecnt * sizeof(uint8_t)) / sizeof(struct nfsclds *) 4925 + 1; 4926 NFSCL_DEBUG(4, "stripeindices=%d\n", i); 4927 ndi = malloc(sizeof(*ndi) + (addrcnt + i) * 4928 sizeof(struct nfsclds *), M_NFSDEVINFO, M_WAITOK | M_ZERO); 4929 NFSBCOPY(deviceid, ndi->nfsdi_deviceid, NFSX_V4DEVICEID); 4930 ndi->nfsdi_refcnt = 0; 4931 ndi->nfsdi_stripecnt = stripecnt; 4932 ndi->nfsdi_addrcnt = addrcnt; 4933 /* Fill in the stripe indices. */ 4934 for (i = 0; i < stripecnt; i++) { 4935 stripeindex = fxdr_unsigned(uint8_t, *tl++); 4936 NFSCL_DEBUG(4, "stripeind=%d\n", stripeindex); 4937 if (stripeindex >= addrcnt) { 4938 printf("NFS devinfo stripeindex %d: too big\n", 4939 (int)stripeindex); 4940 error = NFSERR_BADXDR; 4941 goto nfsmout; 4942 } 4943 nfsfldi_setstripeindex(ndi, i, stripeindex); 4944 } 4945 4946 /* Now, dissect the server address(es). */ 4947 safilled = 0; 4948 for (i = 0; i < addrcnt; i++) { 4949 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 4950 cnt = fxdr_unsigned(uint32_t, *tl); 4951 if (cnt == 0) { 4952 printf("NFS devinfo 0 len addrlist\n"); 4953 error = NFSERR_BADXDR; 4954 goto nfsmout; 4955 } 4956 dspp = nfsfldi_addr(ndi, i); 4957 pos = arc4random() % cnt; /* Choose one. */ 4958 safilled = 0; 4959 for (j = 0; j < cnt; j++) { 4960 error = nfsv4_getipaddr(nd, &ss, &isudp); 4961 if (error != 0 && error != EPERM) { 4962 error = NFSERR_BADXDR; 4963 goto nfsmout; 4964 } 4965 if (error == 0 && isudp == 0) { 4966 /* 4967 * The algorithm is: 4968 * - use "pos" entry if it is of the 4969 * same af_family or none of them 4970 * is of the same af_family 4971 * else 4972 * - use the first one of the same 4973 * af_family. 4974 */ 4975 if ((safilled == 0 && ss.ss_family == 4976 nmp->nm_nam->sa_family) || 4977 (j == pos && 4978 (safilled == 0 || ss.ss_family == 4979 nmp->nm_nam->sa_family)) || 4980 (safilled == 1 && ss.ss_family == 4981 nmp->nm_nam->sa_family)) { 4982 error = nfsrpc_fillsa(nmp, &ss, 4983 &dsp, p); 4984 if (error == 0) { 4985 *dspp = dsp; 4986 if (ss.ss_family == 4987 nmp->nm_nam->sa_family) 4988 safilled = 2; 4989 else 4990 safilled = 1; 4991 } 4992 } 4993 } 4994 } 4995 if (safilled == 0) 4996 break; 4997 } 4998 4999 /* And the notify bits. */ 5000 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 5001 if (safilled != 0) { 5002 bitcnt = fxdr_unsigned(int, *tl); 5003 if (bitcnt > 0) { 5004 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 5005 if (notifybitsp != NULL) 5006 *notifybitsp = 5007 fxdr_unsigned(uint32_t, *tl); 5008 } 5009 *ndip = ndi; 5010 } else 5011 error = EPERM; 5012 } 5013 if (nd->nd_repstat != 0) 5014 error = nd->nd_repstat; 5015 nfsmout: 5016 if (error != 0 && ndi != NULL) 5017 nfscl_freedevinfo(ndi); 5018 mbuf_freem(nd->nd_mrep); 5019 return (error); 5020 } 5021 5022 /* 5023 * Do the NFSv4.1 LayoutCommit. 5024 */ 5025 int 5026 nfsrpc_layoutcommit(struct nfsmount *nmp, uint8_t *fh, int fhlen, int reclaim, 5027 uint64_t off, uint64_t len, uint64_t lastbyte, nfsv4stateid_t *stateidp, 5028 int layouttype, int layoutupdatecnt, uint8_t *layp, struct ucred *cred, 5029 NFSPROC_T *p, void *stuff) 5030 { 5031 uint32_t *tl; 5032 struct nfsrv_descript nfsd, *nd = &nfsd; 5033 int error, outcnt, i; 5034 uint8_t *cp; 5035 5036 nfscl_reqstart(nd, NFSPROC_LAYOUTCOMMIT, nmp, fh, fhlen, NULL, NULL); 5037 NFSM_BUILD(tl, uint32_t *, 5 * NFSX_UNSIGNED + 3 * NFSX_HYPER + 5038 NFSX_STATEID); 5039 txdr_hyper(off, tl); 5040 tl += 2; 5041 txdr_hyper(len, tl); 5042 tl += 2; 5043 if (reclaim != 0) 5044 *tl++ = newnfs_true; 5045 else 5046 *tl++ = newnfs_false; 5047 *tl++ = txdr_unsigned(stateidp->seqid); 5048 *tl++ = stateidp->other[0]; 5049 *tl++ = stateidp->other[1]; 5050 *tl++ = stateidp->other[2]; 5051 *tl++ = newnfs_true; 5052 if (lastbyte < off) 5053 lastbyte = off; 5054 else if (lastbyte >= (off + len)) 5055 lastbyte = off + len - 1; 5056 txdr_hyper(lastbyte, tl); 5057 tl += 2; 5058 *tl++ = newnfs_false; 5059 *tl++ = txdr_unsigned(layouttype); 5060 *tl = txdr_unsigned(layoutupdatecnt); 5061 if (layoutupdatecnt > 0) { 5062 KASSERT(layouttype != NFSLAYOUT_NFSV4_1_FILES, 5063 ("Must be nil for Files Layout")); 5064 outcnt = NFSM_RNDUP(layoutupdatecnt); 5065 NFSM_BUILD(cp, uint8_t *, outcnt); 5066 NFSBCOPY(layp, cp, layoutupdatecnt); 5067 cp += layoutupdatecnt; 5068 for (i = 0; i < (outcnt - layoutupdatecnt); i++) 5069 *cp++ = 0x0; 5070 } 5071 nd->nd_flag |= ND_USEGSSNAME; 5072 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 5073 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 5074 if (error != 0) 5075 return (error); 5076 error = nd->nd_repstat; 5077 mbuf_freem(nd->nd_mrep); 5078 return (error); 5079 } 5080 5081 /* 5082 * Do the NFSv4.1 LayoutReturn. 5083 */ 5084 int 5085 nfsrpc_layoutreturn(struct nfsmount *nmp, uint8_t *fh, int fhlen, int reclaim, 5086 int layouttype, uint32_t iomode, int layoutreturn, uint64_t offset, 5087 uint64_t len, nfsv4stateid_t *stateidp, int layoutcnt, uint32_t *layp, 5088 struct ucred *cred, NFSPROC_T *p, void *stuff) 5089 { 5090 uint32_t *tl; 5091 struct nfsrv_descript nfsd, *nd = &nfsd; 5092 int error, outcnt, i; 5093 uint8_t *cp; 5094 5095 nfscl_reqstart(nd, NFSPROC_LAYOUTRETURN, nmp, fh, fhlen, NULL, NULL); 5096 NFSM_BUILD(tl, uint32_t *, 4 * NFSX_UNSIGNED); 5097 if (reclaim != 0) 5098 *tl++ = newnfs_true; 5099 else 5100 *tl++ = newnfs_false; 5101 *tl++ = txdr_unsigned(layouttype); 5102 *tl++ = txdr_unsigned(iomode); 5103 *tl = txdr_unsigned(layoutreturn); 5104 if (layoutreturn == NFSLAYOUTRETURN_FILE) { 5105 NFSM_BUILD(tl, uint32_t *, 2 * NFSX_HYPER + NFSX_STATEID + 5106 NFSX_UNSIGNED); 5107 txdr_hyper(offset, tl); 5108 tl += 2; 5109 txdr_hyper(len, tl); 5110 tl += 2; 5111 NFSCL_DEBUG(4, "layoutret stseq=%d\n", (int)stateidp->seqid); 5112 *tl++ = txdr_unsigned(stateidp->seqid); 5113 *tl++ = stateidp->other[0]; 5114 *tl++ = stateidp->other[1]; 5115 *tl++ = stateidp->other[2]; 5116 *tl = txdr_unsigned(layoutcnt); 5117 if (layoutcnt > 0) { 5118 outcnt = NFSM_RNDUP(layoutcnt); 5119 NFSM_BUILD(cp, uint8_t *, outcnt); 5120 NFSBCOPY(layp, cp, layoutcnt); 5121 cp += layoutcnt; 5122 for (i = 0; i < (outcnt - layoutcnt); i++) 5123 *cp++ = 0x0; 5124 } 5125 } 5126 nd->nd_flag |= ND_USEGSSNAME; 5127 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 5128 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 5129 if (error != 0) 5130 return (error); 5131 if (nd->nd_repstat == 0) { 5132 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 5133 if (*tl != 0) { 5134 NFSM_DISSECT(tl, uint32_t *, NFSX_STATEID); 5135 stateidp->seqid = fxdr_unsigned(uint32_t, *tl++); 5136 stateidp->other[0] = *tl++; 5137 stateidp->other[1] = *tl++; 5138 stateidp->other[2] = *tl; 5139 } 5140 } else 5141 error = nd->nd_repstat; 5142 nfsmout: 5143 mbuf_freem(nd->nd_mrep); 5144 return (error); 5145 } 5146 5147 /* 5148 * Acquire a layout and devinfo, if possible. The caller must have acquired 5149 * a reference count on the nfsclclient structure before calling this. 5150 * Return the layout in lypp with a reference count on it, if successful. 5151 */ 5152 static int 5153 nfsrpc_getlayout(struct nfsmount *nmp, vnode_t vp, struct nfsfh *nfhp, 5154 int iomode, uint32_t *notifybitsp, nfsv4stateid_t *stateidp, uint64_t off, 5155 struct nfscllayout **lypp, struct ucred *cred, NFSPROC_T *p) 5156 { 5157 struct nfscllayout *lyp; 5158 struct nfsclflayout *flp, *tflp; 5159 struct nfscldevinfo *dip; 5160 struct nfsclflayouthead flh; 5161 int error = 0, islocked, layoutlen, recalled, retonclose; 5162 nfsv4stateid_t stateid; 5163 5164 *lypp = NULL; 5165 /* 5166 * If lyp is returned non-NULL, there will be a refcnt (shared lock) 5167 * on it, iff flp != NULL or a lock (exclusive lock) on it iff 5168 * flp == NULL. 5169 */ 5170 lyp = nfscl_getlayout(nmp->nm_clp, nfhp->nfh_fh, nfhp->nfh_len, 5171 off, &flp, &recalled); 5172 islocked = 0; 5173 if (lyp == NULL || flp == NULL) { 5174 if (recalled != 0) 5175 return (EIO); 5176 LIST_INIT(&flh); 5177 layoutlen = NFSMNT_MDSSESSION(nmp)->nfsess_maxcache - 5178 (NFSX_STATEID + 3 * NFSX_UNSIGNED); 5179 if (lyp == NULL) { 5180 stateid.seqid = 0; 5181 stateid.other[0] = stateidp->other[0]; 5182 stateid.other[1] = stateidp->other[1]; 5183 stateid.other[2] = stateidp->other[2]; 5184 error = nfsrpc_layoutget(nmp, nfhp->nfh_fh, 5185 nfhp->nfh_len, iomode, (uint64_t)0, INT64_MAX, 5186 (uint64_t)0, layoutlen, &stateid, &retonclose, 5187 &flh, cred, p, NULL); 5188 } else { 5189 islocked = 1; 5190 stateid.seqid = lyp->nfsly_stateid.seqid; 5191 stateid.other[0] = lyp->nfsly_stateid.other[0]; 5192 stateid.other[1] = lyp->nfsly_stateid.other[1]; 5193 stateid.other[2] = lyp->nfsly_stateid.other[2]; 5194 error = nfsrpc_layoutget(nmp, nfhp->nfh_fh, 5195 nfhp->nfh_len, iomode, off, INT64_MAX, 5196 (uint64_t)0, layoutlen, &stateid, &retonclose, 5197 &flh, cred, p, NULL); 5198 } 5199 if (error == 0) 5200 LIST_FOREACH(tflp, &flh, nfsfl_list) { 5201 error = nfscl_adddevinfo(nmp, NULL, tflp); 5202 if (error != 0) { 5203 error = nfsrpc_getdeviceinfo(nmp, 5204 tflp->nfsfl_dev, 5205 NFSLAYOUT_NFSV4_1_FILES, 5206 notifybitsp, &dip, cred, p); 5207 if (error != 0) 5208 break; 5209 error = nfscl_adddevinfo(nmp, dip, 5210 tflp); 5211 if (error != 0) 5212 printf( 5213 "getlayout: cannot add\n"); 5214 } 5215 } 5216 if (error == 0) { 5217 /* 5218 * nfscl_layout() always returns with the nfsly_lock 5219 * set to a refcnt (shared lock). 5220 */ 5221 error = nfscl_layout(nmp, vp, nfhp->nfh_fh, 5222 nfhp->nfh_len, &stateid, retonclose, &flh, &lyp, 5223 cred, p); 5224 if (error == 0) 5225 *lypp = lyp; 5226 } else if (islocked != 0) 5227 nfsv4_unlock(&lyp->nfsly_lock, 0); 5228 } else 5229 *lypp = lyp; 5230 return (error); 5231 } 5232 5233 /* 5234 * Do a TCP connection plus exchange id and create session. 5235 * If successful, a "struct nfsclds" is linked into the list for the 5236 * mount point and a pointer to it is returned. 5237 */ 5238 static int 5239 nfsrpc_fillsa(struct nfsmount *nmp, struct sockaddr_storage *ssp, 5240 struct nfsclds **dspp, NFSPROC_T *p) 5241 { 5242 struct sockaddr_in *msad, *sad, *ssd; 5243 struct sockaddr_in6 *msad6, *sad6, *ssd6; 5244 struct nfsclclient *clp; 5245 struct nfssockreq *nrp; 5246 struct nfsclds *dsp, *tdsp; 5247 int error; 5248 enum nfsclds_state retv; 5249 uint32_t sequenceid; 5250 5251 KASSERT(nmp->nm_sockreq.nr_cred != NULL, 5252 ("nfsrpc_fillsa: NULL nr_cred")); 5253 NFSLOCKCLSTATE(); 5254 clp = nmp->nm_clp; 5255 NFSUNLOCKCLSTATE(); 5256 if (clp == NULL) 5257 return (EPERM); 5258 if (ssp->ss_family == AF_INET) { 5259 ssd = (struct sockaddr_in *)ssp; 5260 NFSLOCKMNT(nmp); 5261 5262 /* 5263 * Check to see if we already have a session for this 5264 * address that is usable for a DS. 5265 * Note that the MDS's address is in a different place 5266 * than the sessions already acquired for DS's. 5267 */ 5268 msad = (struct sockaddr_in *)nmp->nm_sockreq.nr_nam; 5269 tdsp = TAILQ_FIRST(&nmp->nm_sess); 5270 while (tdsp != NULL) { 5271 if (msad != NULL && msad->sin_family == AF_INET && 5272 ssd->sin_addr.s_addr == msad->sin_addr.s_addr && 5273 ssd->sin_port == msad->sin_port && 5274 (tdsp->nfsclds_flags & NFSCLDS_DS) != 0) { 5275 *dspp = tdsp; 5276 NFSUNLOCKMNT(nmp); 5277 NFSCL_DEBUG(4, "fnd same addr\n"); 5278 return (0); 5279 } 5280 tdsp = TAILQ_NEXT(tdsp, nfsclds_list); 5281 if (tdsp != NULL && tdsp->nfsclds_sockp != NULL) 5282 msad = (struct sockaddr_in *) 5283 tdsp->nfsclds_sockp->nr_nam; 5284 else 5285 msad = NULL; 5286 } 5287 NFSUNLOCKMNT(nmp); 5288 5289 /* No IP address match, so look for new/trunked one. */ 5290 sad = malloc(sizeof(*sad), M_SONAME, M_WAITOK | M_ZERO); 5291 sad->sin_len = sizeof(*sad); 5292 sad->sin_family = AF_INET; 5293 sad->sin_port = ssd->sin_port; 5294 sad->sin_addr.s_addr = ssd->sin_addr.s_addr; 5295 nrp = malloc(sizeof(*nrp), M_NFSSOCKREQ, M_WAITOK | M_ZERO); 5296 nrp->nr_nam = (struct sockaddr *)sad; 5297 } else if (ssp->ss_family == AF_INET6) { 5298 ssd6 = (struct sockaddr_in6 *)ssp; 5299 NFSLOCKMNT(nmp); 5300 5301 /* 5302 * Check to see if we already have a session for this 5303 * address that is usable for a DS. 5304 * Note that the MDS's address is in a different place 5305 * than the sessions already acquired for DS's. 5306 */ 5307 msad6 = (struct sockaddr_in6 *)nmp->nm_sockreq.nr_nam; 5308 tdsp = TAILQ_FIRST(&nmp->nm_sess); 5309 while (tdsp != NULL) { 5310 if (msad6 != NULL && msad6->sin6_family == AF_INET6 && 5311 IN6_ARE_ADDR_EQUAL(&ssd6->sin6_addr, 5312 &msad6->sin6_addr) && 5313 ssd6->sin6_port == msad6->sin6_port && 5314 (tdsp->nfsclds_flags & NFSCLDS_DS) != 0) { 5315 *dspp = tdsp; 5316 NFSUNLOCKMNT(nmp); 5317 return (0); 5318 } 5319 tdsp = TAILQ_NEXT(tdsp, nfsclds_list); 5320 if (tdsp != NULL && tdsp->nfsclds_sockp != NULL) 5321 msad6 = (struct sockaddr_in6 *) 5322 tdsp->nfsclds_sockp->nr_nam; 5323 else 5324 msad6 = NULL; 5325 } 5326 NFSUNLOCKMNT(nmp); 5327 5328 /* No IP address match, so look for new/trunked one. */ 5329 sad6 = malloc(sizeof(*sad6), M_SONAME, M_WAITOK | M_ZERO); 5330 sad6->sin6_len = sizeof(*sad6); 5331 sad6->sin6_family = AF_INET6; 5332 sad6->sin6_port = ssd6->sin6_port; 5333 NFSBCOPY(&ssd6->sin6_addr, &sad6->sin6_addr, 5334 sizeof(struct in6_addr)); 5335 nrp = malloc(sizeof(*nrp), M_NFSSOCKREQ, M_WAITOK | M_ZERO); 5336 nrp->nr_nam = (struct sockaddr *)sad6; 5337 } else 5338 return (EPERM); 5339 5340 nrp->nr_sotype = SOCK_STREAM; 5341 mtx_init(&nrp->nr_mtx, "nfssock", NULL, MTX_DEF); 5342 nrp->nr_prog = NFS_PROG; 5343 nrp->nr_vers = NFS_VER4; 5344 5345 /* 5346 * Use the credentials that were used for the mount, which are 5347 * in nmp->nm_sockreq.nr_cred for newnfs_connect() etc. 5348 * Ref. counting the credentials with crhold() is probably not 5349 * necessary, since nm_sockreq.nr_cred won't be crfree()'d until 5350 * unmount, but I did it anyhow. 5351 */ 5352 nrp->nr_cred = crhold(nmp->nm_sockreq.nr_cred); 5353 error = newnfs_connect(nmp, nrp, NULL, p, 0); 5354 NFSCL_DEBUG(3, "DS connect=%d\n", error); 5355 5356 /* Now, do the exchangeid and create session. */ 5357 if (error == 0) 5358 error = nfsrpc_exchangeid(nmp, clp, nrp, NFSV4EXCH_USEPNFSDS, 5359 &dsp, nrp->nr_cred, p); 5360 NFSCL_DEBUG(3, "DS exchangeid=%d\n", error); 5361 if (error == 0) { 5362 dsp->nfsclds_sockp = nrp; 5363 NFSLOCKMNT(nmp); 5364 retv = nfscl_getsameserver(nmp, dsp, &tdsp); 5365 NFSCL_DEBUG(3, "getsame ret=%d\n", retv); 5366 if (retv == NFSDSP_USETHISSESSION) { 5367 NFSUNLOCKMNT(nmp); 5368 /* 5369 * If there is already a session for this server, 5370 * use it. 5371 */ 5372 (void)newnfs_disconnect(nrp); 5373 nfscl_freenfsclds(dsp); 5374 *dspp = tdsp; 5375 return (0); 5376 } 5377 if (retv == NFSDSP_SEQTHISSESSION) 5378 sequenceid = tdsp->nfsclds_sess.nfsess_sequenceid; 5379 else 5380 sequenceid = dsp->nfsclds_sess.nfsess_sequenceid; 5381 NFSUNLOCKMNT(nmp); 5382 error = nfsrpc_createsession(nmp, &dsp->nfsclds_sess, 5383 nrp, sequenceid, 0, nrp->nr_cred, p); 5384 NFSCL_DEBUG(3, "DS createsess=%d\n", error); 5385 } else { 5386 NFSFREECRED(nrp->nr_cred); 5387 NFSFREEMUTEX(&nrp->nr_mtx); 5388 free(nrp->nr_nam, M_SONAME); 5389 free(nrp, M_NFSSOCKREQ); 5390 } 5391 if (error == 0) { 5392 NFSCL_DEBUG(3, "add DS session\n"); 5393 /* 5394 * Put it at the end of the list. That way the list 5395 * is ordered by when the entry was added. This matters 5396 * since the one done first is the one that should be 5397 * used for sequencid'ing any subsequent create sessions. 5398 */ 5399 NFSLOCKMNT(nmp); 5400 TAILQ_INSERT_TAIL(&nmp->nm_sess, dsp, nfsclds_list); 5401 NFSUNLOCKMNT(nmp); 5402 *dspp = dsp; 5403 } else if (dsp != NULL) 5404 nfscl_freenfsclds(dsp); 5405 return (error); 5406 } 5407 5408 /* 5409 * Do the NFSv4.1 Reclaim Complete. 5410 */ 5411 int 5412 nfsrpc_reclaimcomplete(struct nfsmount *nmp, struct ucred *cred, NFSPROC_T *p) 5413 { 5414 uint32_t *tl; 5415 struct nfsrv_descript nfsd; 5416 struct nfsrv_descript *nd = &nfsd; 5417 int error; 5418 5419 nfscl_reqstart(nd, NFSPROC_RECLAIMCOMPL, nmp, NULL, 0, NULL, NULL); 5420 NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED); 5421 *tl = newnfs_false; 5422 nd->nd_flag |= ND_USEGSSNAME; 5423 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 5424 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 5425 if (error != 0) 5426 return (error); 5427 error = nd->nd_repstat; 5428 mbuf_freem(nd->nd_mrep); 5429 return (error); 5430 } 5431 5432 /* 5433 * Initialize the slot tables for a session. 5434 */ 5435 static void 5436 nfscl_initsessionslots(struct nfsclsession *sep) 5437 { 5438 int i; 5439 5440 for (i = 0; i < NFSV4_CBSLOTS; i++) { 5441 if (sep->nfsess_cbslots[i].nfssl_reply != NULL) 5442 m_freem(sep->nfsess_cbslots[i].nfssl_reply); 5443 NFSBZERO(&sep->nfsess_cbslots[i], sizeof(struct nfsslot)); 5444 } 5445 for (i = 0; i < 64; i++) 5446 sep->nfsess_slotseq[i] = 0; 5447 sep->nfsess_slots = 0; 5448 } 5449 5450 /* 5451 * Called to try and do an I/O operation via an NFSv4.1 Data Server (DS). 5452 */ 5453 int 5454 nfscl_doiods(vnode_t vp, struct uio *uiop, int *iomode, int *must_commit, 5455 uint32_t rwaccess, struct ucred *cred, NFSPROC_T *p) 5456 { 5457 struct nfsnode *np = VTONFS(vp); 5458 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 5459 struct nfscllayout *layp; 5460 struct nfscldevinfo *dip; 5461 struct nfsclflayout *rflp; 5462 nfsv4stateid_t stateid; 5463 struct ucred *newcred; 5464 uint64_t lastbyte, len, off, oresid, xfer; 5465 int eof, error, iolaymode, recalled; 5466 void *lckp; 5467 5468 if (!NFSHASPNFS(nmp) || nfscl_enablecallb == 0 || nfs_numnfscbd == 0 || 5469 (np->n_flag & NNOLAYOUT) != 0) 5470 return (EIO); 5471 /* Now, get a reference cnt on the clientid for this mount. */ 5472 if (nfscl_getref(nmp) == 0) 5473 return (EIO); 5474 5475 /* Find an appropriate stateid. */ 5476 newcred = NFSNEWCRED(cred); 5477 error = nfscl_getstateid(vp, np->n_fhp->nfh_fh, np->n_fhp->nfh_len, 5478 rwaccess, 1, newcred, p, &stateid, &lckp); 5479 if (error != 0) { 5480 NFSFREECRED(newcred); 5481 nfscl_relref(nmp); 5482 return (error); 5483 } 5484 /* Search for a layout for this file. */ 5485 off = uiop->uio_offset; 5486 layp = nfscl_getlayout(nmp->nm_clp, np->n_fhp->nfh_fh, 5487 np->n_fhp->nfh_len, off, &rflp, &recalled); 5488 if (layp == NULL || rflp == NULL) { 5489 if (recalled != 0) { 5490 NFSFREECRED(newcred); 5491 nfscl_relref(nmp); 5492 return (EIO); 5493 } 5494 if (layp != NULL) { 5495 nfscl_rellayout(layp, (rflp == NULL) ? 1 : 0); 5496 layp = NULL; 5497 } 5498 /* Try and get a Layout, if it is supported. */ 5499 if (rwaccess == NFSV4OPEN_ACCESSWRITE || 5500 (np->n_flag & NWRITEOPENED) != 0) 5501 iolaymode = NFSLAYOUTIOMODE_RW; 5502 else 5503 iolaymode = NFSLAYOUTIOMODE_READ; 5504 error = nfsrpc_getlayout(nmp, vp, np->n_fhp, iolaymode, 5505 NULL, &stateid, off, &layp, newcred, p); 5506 if (error != 0) { 5507 NFSLOCKNODE(np); 5508 np->n_flag |= NNOLAYOUT; 5509 NFSUNLOCKNODE(np); 5510 if (lckp != NULL) 5511 nfscl_lockderef(lckp); 5512 NFSFREECRED(newcred); 5513 if (layp != NULL) 5514 nfscl_rellayout(layp, 0); 5515 nfscl_relref(nmp); 5516 return (error); 5517 } 5518 } 5519 5520 /* 5521 * Loop around finding a layout that works for the first part of 5522 * this I/O operation, and then call the function that actually 5523 * does the RPC. 5524 */ 5525 eof = 0; 5526 len = (uint64_t)uiop->uio_resid; 5527 while (len > 0 && error == 0 && eof == 0) { 5528 off = uiop->uio_offset; 5529 error = nfscl_findlayoutforio(layp, off, rwaccess, &rflp); 5530 if (error == 0) { 5531 oresid = xfer = (uint64_t)uiop->uio_resid; 5532 if (xfer > (rflp->nfsfl_end - rflp->nfsfl_off)) 5533 xfer = rflp->nfsfl_end - rflp->nfsfl_off; 5534 dip = nfscl_getdevinfo(nmp->nm_clp, rflp->nfsfl_dev, 5535 rflp->nfsfl_devp); 5536 if (dip != NULL) { 5537 error = nfscl_doflayoutio(vp, uiop, iomode, 5538 must_commit, &eof, &stateid, rwaccess, dip, 5539 layp, rflp, off, xfer, newcred, p); 5540 nfscl_reldevinfo(dip); 5541 lastbyte = off + xfer - 1; 5542 if (error == 0) { 5543 NFSLOCKCLSTATE(); 5544 if (lastbyte > layp->nfsly_lastbyte) 5545 layp->nfsly_lastbyte = lastbyte; 5546 NFSUNLOCKCLSTATE(); 5547 } 5548 } else 5549 error = EIO; 5550 if (error == 0) 5551 len -= (oresid - (uint64_t)uiop->uio_resid); 5552 } 5553 } 5554 if (lckp != NULL) 5555 nfscl_lockderef(lckp); 5556 NFSFREECRED(newcred); 5557 nfscl_rellayout(layp, 0); 5558 nfscl_relref(nmp); 5559 return (error); 5560 } 5561 5562 /* 5563 * Find a file layout that will handle the first bytes of the requested 5564 * range and return the information from it needed to to the I/O operation. 5565 */ 5566 int 5567 nfscl_findlayoutforio(struct nfscllayout *lyp, uint64_t off, uint32_t rwaccess, 5568 struct nfsclflayout **retflpp) 5569 { 5570 struct nfsclflayout *flp, *nflp, *rflp; 5571 uint32_t rw; 5572 5573 rflp = NULL; 5574 rw = rwaccess; 5575 /* For reading, do the Read list first and then the Write list. */ 5576 do { 5577 if (rw == NFSV4OPEN_ACCESSREAD) 5578 flp = LIST_FIRST(&lyp->nfsly_flayread); 5579 else 5580 flp = LIST_FIRST(&lyp->nfsly_flayrw); 5581 while (flp != NULL) { 5582 nflp = LIST_NEXT(flp, nfsfl_list); 5583 if (flp->nfsfl_off > off) 5584 break; 5585 if (flp->nfsfl_end > off && 5586 (rflp == NULL || rflp->nfsfl_end < flp->nfsfl_end)) 5587 rflp = flp; 5588 flp = nflp; 5589 } 5590 if (rw == NFSV4OPEN_ACCESSREAD) 5591 rw = NFSV4OPEN_ACCESSWRITE; 5592 else 5593 rw = 0; 5594 } while (rw != 0); 5595 if (rflp != NULL) { 5596 /* This one covers the most bytes starting at off. */ 5597 *retflpp = rflp; 5598 return (0); 5599 } 5600 return (EIO); 5601 } 5602 5603 /* 5604 * Do I/O using an NFSv4.1 file layout. 5605 */ 5606 static int 5607 nfscl_doflayoutio(vnode_t vp, struct uio *uiop, int *iomode, int *must_commit, 5608 int *eofp, nfsv4stateid_t *stateidp, int rwflag, struct nfscldevinfo *dp, 5609 struct nfscllayout *lyp, struct nfsclflayout *flp, uint64_t off, 5610 uint64_t len, struct ucred *cred, NFSPROC_T *p) 5611 { 5612 uint64_t io_off, rel_off, stripe_unit_size, transfer, xfer; 5613 int commit_thru_mds, error = 0, stripe_index, stripe_pos; 5614 struct nfsnode *np; 5615 struct nfsfh *fhp; 5616 struct nfsclds **dspp; 5617 5618 np = VTONFS(vp); 5619 rel_off = off - flp->nfsfl_patoff; 5620 stripe_unit_size = (flp->nfsfl_util >> 6) & 0x3ffffff; 5621 stripe_pos = (rel_off / stripe_unit_size + flp->nfsfl_stripe1) % 5622 dp->nfsdi_stripecnt; 5623 transfer = stripe_unit_size - (rel_off % stripe_unit_size); 5624 5625 /* Loop around, doing I/O for each stripe unit. */ 5626 while (len > 0 && error == 0) { 5627 stripe_index = nfsfldi_stripeindex(dp, stripe_pos); 5628 dspp = nfsfldi_addr(dp, stripe_index); 5629 if (len > transfer) 5630 xfer = transfer; 5631 else 5632 xfer = len; 5633 if ((flp->nfsfl_util & NFSFLAYUTIL_DENSE) != 0) { 5634 /* Dense layout. */ 5635 if (stripe_pos >= flp->nfsfl_fhcnt) 5636 return (EIO); 5637 fhp = flp->nfsfl_fh[stripe_pos]; 5638 io_off = (rel_off / (stripe_unit_size * 5639 dp->nfsdi_stripecnt)) * stripe_unit_size + 5640 rel_off % stripe_unit_size; 5641 } else { 5642 /* Sparse layout. */ 5643 if (flp->nfsfl_fhcnt > 1) { 5644 if (stripe_index >= flp->nfsfl_fhcnt) 5645 return (EIO); 5646 fhp = flp->nfsfl_fh[stripe_index]; 5647 } else if (flp->nfsfl_fhcnt == 1) 5648 fhp = flp->nfsfl_fh[0]; 5649 else 5650 fhp = np->n_fhp; 5651 io_off = off; 5652 } 5653 if ((flp->nfsfl_util & NFSFLAYUTIL_COMMIT_THRU_MDS) != 0) 5654 commit_thru_mds = 1; 5655 else 5656 commit_thru_mds = 0; 5657 if (rwflag == FREAD) 5658 error = nfsrpc_readds(vp, uiop, stateidp, eofp, *dspp, 5659 io_off, xfer, fhp, cred, p); 5660 else { 5661 error = nfsrpc_writeds(vp, uiop, iomode, must_commit, 5662 stateidp, *dspp, io_off, xfer, fhp, commit_thru_mds, 5663 cred, p); 5664 if (error == 0) { 5665 NFSLOCKCLSTATE(); 5666 lyp->nfsly_flags |= NFSLY_WRITTEN; 5667 NFSUNLOCKCLSTATE(); 5668 } 5669 } 5670 if (error == 0) { 5671 transfer = stripe_unit_size; 5672 stripe_pos = (stripe_pos + 1) % dp->nfsdi_stripecnt; 5673 len -= xfer; 5674 off += xfer; 5675 } 5676 } 5677 return (error); 5678 } 5679 5680 /* 5681 * The actual read RPC done to a DS. 5682 */ 5683 static int 5684 nfsrpc_readds(vnode_t vp, struct uio *uiop, nfsv4stateid_t *stateidp, int *eofp, 5685 struct nfsclds *dsp, uint64_t io_off, int len, struct nfsfh *fhp, 5686 struct ucred *cred, NFSPROC_T *p) 5687 { 5688 uint32_t *tl; 5689 int error, retlen; 5690 struct nfsrv_descript nfsd; 5691 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 5692 struct nfsrv_descript *nd = &nfsd; 5693 struct nfssockreq *nrp; 5694 5695 nd->nd_mrep = NULL; 5696 nfscl_reqstart(nd, NFSPROC_READDS, nmp, fhp->nfh_fh, fhp->nfh_len, 5697 NULL, &dsp->nfsclds_sess); 5698 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSEQIDZERO); 5699 NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED * 3); 5700 txdr_hyper(io_off, tl); 5701 *(tl + 2) = txdr_unsigned(len); 5702 nrp = dsp->nfsclds_sockp; 5703 if (nrp == NULL) 5704 /* If NULL, use the MDS socket. */ 5705 nrp = &nmp->nm_sockreq; 5706 error = newnfs_request(nd, nmp, NULL, nrp, vp, p, cred, 5707 NFS_PROG, NFS_VER4, NULL, 1, NULL, &dsp->nfsclds_sess); 5708 if (error != 0) 5709 return (error); 5710 if (nd->nd_repstat != 0) { 5711 error = nd->nd_repstat; 5712 goto nfsmout; 5713 } 5714 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 5715 *eofp = fxdr_unsigned(int, *tl); 5716 NFSM_STRSIZ(retlen, len); 5717 error = nfsm_mbufuio(nd, uiop, retlen); 5718 nfsmout: 5719 if (nd->nd_mrep != NULL) 5720 mbuf_freem(nd->nd_mrep); 5721 return (error); 5722 } 5723 5724 /* 5725 * The actual write RPC done to a DS. 5726 */ 5727 static int 5728 nfsrpc_writeds(vnode_t vp, struct uio *uiop, int *iomode, int *must_commit, 5729 nfsv4stateid_t *stateidp, struct nfsclds *dsp, uint64_t io_off, int len, 5730 struct nfsfh *fhp, int commit_thru_mds, struct ucred *cred, NFSPROC_T *p) 5731 { 5732 uint32_t *tl; 5733 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 5734 int error, rlen, commit, committed = NFSWRITE_FILESYNC; 5735 int32_t backup; 5736 struct nfsrv_descript nfsd; 5737 struct nfsrv_descript *nd = &nfsd; 5738 struct nfssockreq *nrp; 5739 5740 KASSERT(uiop->uio_iovcnt == 1, ("nfs: writerpc iovcnt > 1")); 5741 nd->nd_mrep = NULL; 5742 nfscl_reqstart(nd, NFSPROC_WRITEDS, nmp, fhp->nfh_fh, fhp->nfh_len, 5743 NULL, &dsp->nfsclds_sess); 5744 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSEQIDZERO); 5745 NFSM_BUILD(tl, uint32_t *, NFSX_HYPER + 2 * NFSX_UNSIGNED); 5746 txdr_hyper(io_off, tl); 5747 tl += 2; 5748 *tl++ = txdr_unsigned(*iomode); 5749 *tl = txdr_unsigned(len); 5750 nfsm_uiombuf(nd, uiop, len); 5751 nrp = dsp->nfsclds_sockp; 5752 if (nrp == NULL) 5753 /* If NULL, use the MDS socket. */ 5754 nrp = &nmp->nm_sockreq; 5755 error = newnfs_request(nd, nmp, NULL, nrp, vp, p, cred, 5756 NFS_PROG, NFS_VER4, NULL, 1, NULL, &dsp->nfsclds_sess); 5757 if (error != 0) 5758 return (error); 5759 if (nd->nd_repstat != 0) { 5760 /* 5761 * In case the rpc gets retried, roll 5762 * the uio fileds changed by nfsm_uiombuf() 5763 * back. 5764 */ 5765 uiop->uio_offset -= len; 5766 uio_uio_resid_add(uiop, len); 5767 uio_iov_base_add(uiop, -len); 5768 uio_iov_len_add(uiop, len); 5769 error = nd->nd_repstat; 5770 } else { 5771 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED + NFSX_VERF); 5772 rlen = fxdr_unsigned(int, *tl++); 5773 if (rlen == 0) { 5774 error = NFSERR_IO; 5775 goto nfsmout; 5776 } else if (rlen < len) { 5777 backup = len - rlen; 5778 uio_iov_base_add(uiop, -(backup)); 5779 uio_iov_len_add(uiop, backup); 5780 uiop->uio_offset -= backup; 5781 uio_uio_resid_add(uiop, backup); 5782 len = rlen; 5783 } 5784 commit = fxdr_unsigned(int, *tl++); 5785 5786 /* 5787 * Return the lowest commitment level 5788 * obtained by any of the RPCs. 5789 */ 5790 if (committed == NFSWRITE_FILESYNC) 5791 committed = commit; 5792 else if (committed == NFSWRITE_DATASYNC && 5793 commit == NFSWRITE_UNSTABLE) 5794 committed = commit; 5795 if (commit_thru_mds != 0) { 5796 NFSLOCKMNT(nmp); 5797 if (!NFSHASWRITEVERF(nmp)) { 5798 NFSBCOPY(tl, nmp->nm_verf, NFSX_VERF); 5799 NFSSETWRITEVERF(nmp); 5800 } else if (NFSBCMP(tl, nmp->nm_verf, NFSX_VERF)) { 5801 *must_commit = 1; 5802 NFSBCOPY(tl, nmp->nm_verf, NFSX_VERF); 5803 } 5804 NFSUNLOCKMNT(nmp); 5805 } else { 5806 NFSLOCKDS(dsp); 5807 if ((dsp->nfsclds_flags & NFSCLDS_HASWRITEVERF) == 0) { 5808 NFSBCOPY(tl, dsp->nfsclds_verf, NFSX_VERF); 5809 dsp->nfsclds_flags |= NFSCLDS_HASWRITEVERF; 5810 } else if (NFSBCMP(tl, dsp->nfsclds_verf, NFSX_VERF)) { 5811 *must_commit = 1; 5812 NFSBCOPY(tl, dsp->nfsclds_verf, NFSX_VERF); 5813 } 5814 NFSUNLOCKDS(dsp); 5815 } 5816 } 5817 nfsmout: 5818 if (nd->nd_mrep != NULL) 5819 mbuf_freem(nd->nd_mrep); 5820 *iomode = committed; 5821 if (nd->nd_repstat != 0 && error == 0) 5822 error = nd->nd_repstat; 5823 return (error); 5824 } 5825 5826 /* 5827 * Free up the nfsclds structure. 5828 */ 5829 void 5830 nfscl_freenfsclds(struct nfsclds *dsp) 5831 { 5832 int i; 5833 5834 if (dsp == NULL) 5835 return; 5836 if (dsp->nfsclds_sockp != NULL) { 5837 NFSFREECRED(dsp->nfsclds_sockp->nr_cred); 5838 NFSFREEMUTEX(&dsp->nfsclds_sockp->nr_mtx); 5839 free(dsp->nfsclds_sockp->nr_nam, M_SONAME); 5840 free(dsp->nfsclds_sockp, M_NFSSOCKREQ); 5841 } 5842 NFSFREEMUTEX(&dsp->nfsclds_mtx); 5843 NFSFREEMUTEX(&dsp->nfsclds_sess.nfsess_mtx); 5844 for (i = 0; i < NFSV4_CBSLOTS; i++) { 5845 if (dsp->nfsclds_sess.nfsess_cbslots[i].nfssl_reply != NULL) 5846 m_freem( 5847 dsp->nfsclds_sess.nfsess_cbslots[i].nfssl_reply); 5848 } 5849 free(dsp, M_NFSCLDS); 5850 } 5851 5852 static enum nfsclds_state 5853 nfscl_getsameserver(struct nfsmount *nmp, struct nfsclds *newdsp, 5854 struct nfsclds **retdspp) 5855 { 5856 struct nfsclds *dsp, *cur_dsp; 5857 5858 /* 5859 * Search the list of nfsclds structures for one with the same 5860 * server. 5861 */ 5862 cur_dsp = NULL; 5863 TAILQ_FOREACH(dsp, &nmp->nm_sess, nfsclds_list) { 5864 if (dsp->nfsclds_servownlen == newdsp->nfsclds_servownlen && 5865 dsp->nfsclds_servownlen != 0 && 5866 !NFSBCMP(dsp->nfsclds_serverown, newdsp->nfsclds_serverown, 5867 dsp->nfsclds_servownlen)) { 5868 NFSCL_DEBUG(4, "fnd same fdsp=%p dsp=%p flg=0x%x\n", 5869 TAILQ_FIRST(&nmp->nm_sess), dsp, 5870 dsp->nfsclds_flags); 5871 /* Server major id matches. */ 5872 if ((dsp->nfsclds_flags & NFSCLDS_DS) != 0) { 5873 *retdspp = dsp; 5874 return (NFSDSP_USETHISSESSION); 5875 } 5876 5877 /* 5878 * Note the first match, so it can be used for 5879 * sequence'ing new sessions. 5880 */ 5881 if (cur_dsp == NULL) 5882 cur_dsp = dsp; 5883 } 5884 } 5885 if (cur_dsp != NULL) { 5886 *retdspp = cur_dsp; 5887 return (NFSDSP_SEQTHISSESSION); 5888 } 5889 return (NFSDSP_NOTFOUND); 5890 } 5891 5892 #ifdef notyet 5893 /* 5894 * NFS commit rpc to a DS. 5895 */ 5896 static int 5897 nfsrpc_commitds(vnode_t vp, uint64_t offset, int cnt, struct nfsclds *dsp, 5898 struct nfsfh *fhp, struct ucred *cred, NFSPROC_T *p, void *stuff) 5899 { 5900 uint32_t *tl; 5901 struct nfsrv_descript nfsd, *nd = &nfsd; 5902 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 5903 struct nfssockreq *nrp; 5904 int error; 5905 5906 nfscl_reqstart(nd, NFSPROC_COMMITDS, nmp, fhp->nfh_fh, fhp->nfh_len, 5907 NULL, &dsp->nfsclds_sess); 5908 NFSM_BUILD(tl, uint32_t *, NFSX_HYPER + NFSX_UNSIGNED); 5909 txdr_hyper(offset, tl); 5910 tl += 2; 5911 *tl = txdr_unsigned(cnt); 5912 nrp = dsp->nfsclds_sockp; 5913 if (nrp == NULL) 5914 /* If NULL, use the MDS socket. */ 5915 nrp = &nmp->nm_sockreq; 5916 error = newnfs_request(nd, nmp, NULL, nrp, vp, p, cred, 5917 NFS_PROG, NFS_VER4, NULL, 1, NULL, &dsp->nfsclds_sess); 5918 if (error) 5919 return (error); 5920 if (nd->nd_repstat == 0) { 5921 NFSM_DISSECT(tl, u_int32_t *, NFSX_VERF); 5922 NFSLOCKDS(dsp); 5923 if (NFSBCMP(tl, dsp->nfsclds_verf, NFSX_VERF)) { 5924 NFSBCOPY(tl, dsp->nfsclds_verf, NFSX_VERF); 5925 error = NFSERR_STALEWRITEVERF; 5926 } 5927 NFSUNLOCKDS(dsp); 5928 } 5929 nfsmout: 5930 if (error == 0 && nd->nd_repstat != 0) 5931 error = nd->nd_repstat; 5932 mbuf_freem(nd->nd_mrep); 5933 return (error); 5934 } 5935 #endif 5936 5937
Indexes created Tue Sep 30 11:09:46 GMT 2025