nfs_clrpcops.c revision 1.1
1 /* $NetBSD: nfs_clrpcops.c,v 1.1 2013/09/30 07:19:18 dholland 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 245977 2013-01-27 09:34:25Z kib "); */ 37 __RCSID("$NetBSD: nfs_clrpcops.c,v 1.1 2013/09/30 07:19:18 dholland 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 52 /* 53 * Global variables 54 */ 55 extern int nfs_numnfscbd; 56 extern struct timeval nfsboottime; 57 extern u_int32_t newnfs_false, newnfs_true; 58 extern nfstype nfsv34_type[9]; 59 extern int nfsrv_useacl; 60 extern char nfsv4_callbackaddr[INET6_ADDRSTRLEN]; 61 extern int nfscl_debuglevel; 62 NFSCLSTATEMUTEX; 63 int nfstest_outofseq = 0; 64 int nfscl_assumeposixlocks = 1; 65 int nfscl_enablecallb = 0; 66 short nfsv4_cbport = NFSV4_CBPORT; 67 int nfstest_openallsetattr = 0; 68 #endif /* !APPLEKEXT */ 69 70 #define DIRHDSIZ (sizeof (struct dirent) - (MAXNAMLEN + 1)) 71 72 /* 73 * nfscl_getsameserver() can return one of three values: 74 * NFSDSP_USETHISSESSION - Use this session for the DS. 75 * NFSDSP_SEQTHISSESSION - Use the nfsclds_sequence field of this dsp for new 76 * session. 77 * NFSDSP_NOTFOUND - No matching server was found. 78 */ 79 enum nfsclds_state { 80 NFSDSP_USETHISSESSION = 0, 81 NFSDSP_SEQTHISSESSION = 1, 82 NFSDSP_NOTFOUND = 2, 83 }; 84 85 static int nfsrpc_setattrrpc(vnode_t , struct vattr *, nfsv4stateid_t *, 86 struct ucred *, NFSPROC_T *, struct nfsvattr *, int *, void *); 87 static int nfsrpc_readrpc(vnode_t , struct uio *, struct ucred *, 88 nfsv4stateid_t *, NFSPROC_T *, struct nfsvattr *, int *, void *); 89 static int nfsrpc_writerpc(vnode_t , struct uio *, int *, int *, 90 struct ucred *, nfsv4stateid_t *, NFSPROC_T *, struct nfsvattr *, int *, 91 void *); 92 static int nfsrpc_createv23(vnode_t , char *, int, struct vattr *, 93 nfsquad_t, int, struct ucred *, NFSPROC_T *, struct nfsvattr *, 94 struct nfsvattr *, struct nfsfh **, int *, int *, void *); 95 static int nfsrpc_createv4(vnode_t , char *, int, struct vattr *, 96 nfsquad_t, int, struct nfsclowner *, struct nfscldeleg **, struct ucred *, 97 NFSPROC_T *, struct nfsvattr *, struct nfsvattr *, struct nfsfh **, int *, 98 int *, void *, int *); 99 static int nfsrpc_locku(struct nfsrv_descript *, struct nfsmount *, 100 struct nfscllockowner *, u_int64_t, u_int64_t, 101 u_int32_t, struct ucred *, NFSPROC_T *, int); 102 static int nfsrpc_setaclrpc(vnode_t, struct ucred *, NFSPROC_T *, 103 struct acl *, nfsv4stateid_t *, void *); 104 static int nfsrpc_getlayout(struct nfsmount *, vnode_t, struct nfsfh *, int, 105 uint32_t *, nfsv4stateid_t *, uint64_t, struct nfscllayout **, 106 struct ucred *, NFSPROC_T *); 107 static int nfsrpc_fillsa(struct nfsmount *, struct sockaddr_storage *, 108 struct nfsclds **, NFSPROC_T *); 109 static void nfscl_initsessionslots(struct nfsclsession *); 110 static int nfscl_doflayoutio(vnode_t, struct uio *, int *, int *, int *, 111 nfsv4stateid_t *, int, struct nfscldevinfo *, struct nfscllayout *, 112 struct nfsclflayout *, uint64_t, uint64_t, struct ucred *, NFSPROC_T *); 113 static int nfsrpc_readds(vnode_t, struct uio *, nfsv4stateid_t *, int *, 114 struct nfsclds *, uint64_t, int, struct nfsfh *, struct ucred *, 115 NFSPROC_T *); 116 static int nfsrpc_writeds(vnode_t, struct uio *, int *, int *, 117 nfsv4stateid_t *, struct nfsclds *, uint64_t, int, 118 struct nfsfh *, int, struct ucred *, NFSPROC_T *); 119 static enum nfsclds_state nfscl_getsameserver(struct nfsmount *, 120 struct nfsclds *, struct nfsclds **); 121 #ifdef notyet 122 static int nfsrpc_commitds(vnode_t, uint64_t, int, struct nfsclds *, 123 struct nfsfh *, struct ucred *, NFSPROC_T *, void *); 124 #endif 125 126 /* 127 * nfs null call from vfs. 128 */ 129 APPLESTATIC int 130 nfsrpc_null(vnode_t vp, struct ucred *cred, NFSPROC_T *p) 131 { 132 int error; 133 struct nfsrv_descript nfsd, *nd = &nfsd; 134 135 NFSCL_REQSTART(nd, NFSPROC_NULL, vp); 136 error = nfscl_request(nd, vp, p, cred, NULL); 137 if (nd->nd_repstat && !error) 138 error = nd->nd_repstat; 139 mbuf_freem(nd->nd_mrep); 140 return (error); 141 } 142 143 /* 144 * nfs access rpc op. 145 * For nfs version 3 and 4, use the access rpc to check accessibility. If file 146 * modes are changed on the server, accesses might still fail later. 147 */ 148 APPLESTATIC int 149 nfsrpc_access(vnode_t vp, int acmode, struct ucred *cred, 150 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp) 151 { 152 int error; 153 u_int32_t mode, rmode; 154 155 if (acmode & VREAD) 156 mode = NFSACCESS_READ; 157 else 158 mode = 0; 159 if (vnode_vtype(vp) == VDIR) { 160 if (acmode & VWRITE) 161 mode |= (NFSACCESS_MODIFY | NFSACCESS_EXTEND | 162 NFSACCESS_DELETE); 163 if (acmode & VEXEC) 164 mode |= NFSACCESS_LOOKUP; 165 } else { 166 if (acmode & VWRITE) 167 mode |= (NFSACCESS_MODIFY | NFSACCESS_EXTEND); 168 if (acmode & VEXEC) 169 mode |= NFSACCESS_EXECUTE; 170 } 171 172 /* 173 * Now, just call nfsrpc_accessrpc() to do the actual RPC. 174 */ 175 error = nfsrpc_accessrpc(vp, mode, cred, p, nap, attrflagp, &rmode, 176 NULL); 177 178 /* 179 * The NFS V3 spec does not clarify whether or not 180 * the returned access bits can be a superset of 181 * the ones requested, so... 182 */ 183 if (!error && (rmode & mode) != mode) 184 error = EACCES; 185 return (error); 186 } 187 188 /* 189 * The actual rpc, separated out for Darwin. 190 */ 191 APPLESTATIC int 192 nfsrpc_accessrpc(vnode_t vp, u_int32_t mode, struct ucred *cred, 193 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, u_int32_t *rmodep, 194 void *stuff) 195 { 196 u_int32_t *tl; 197 u_int32_t supported, rmode; 198 int error; 199 struct nfsrv_descript nfsd, *nd = &nfsd; 200 nfsattrbit_t attrbits; 201 202 *attrflagp = 0; 203 supported = mode; 204 NFSCL_REQSTART(nd, NFSPROC_ACCESS, vp); 205 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 206 *tl = txdr_unsigned(mode); 207 if (nd->nd_flag & ND_NFSV4) { 208 /* 209 * And do a Getattr op. 210 */ 211 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 212 *tl = txdr_unsigned(NFSV4OP_GETATTR); 213 NFSGETATTR_ATTRBIT(&attrbits); 214 (void) nfsrv_putattrbit(nd, &attrbits); 215 } 216 error = nfscl_request(nd, vp, p, cred, stuff); 217 if (error) 218 return (error); 219 if (nd->nd_flag & ND_NFSV3) { 220 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 221 if (error) 222 goto nfsmout; 223 } 224 if (!nd->nd_repstat) { 225 if (nd->nd_flag & ND_NFSV4) { 226 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 227 supported = fxdr_unsigned(u_int32_t, *tl++); 228 } else { 229 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 230 } 231 rmode = fxdr_unsigned(u_int32_t, *tl); 232 if (nd->nd_flag & ND_NFSV4) 233 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 234 235 /* 236 * It's not obvious what should be done about 237 * unsupported access modes. For now, be paranoid 238 * and clear the unsupported ones. 239 */ 240 rmode &= supported; 241 *rmodep = rmode; 242 } else 243 error = nd->nd_repstat; 244 nfsmout: 245 mbuf_freem(nd->nd_mrep); 246 return (error); 247 } 248 249 /* 250 * nfs open rpc 251 */ 252 APPLESTATIC int 253 nfsrpc_open(vnode_t vp, int amode, struct ucred *cred, NFSPROC_T *p) 254 { 255 struct nfsclopen *op; 256 struct nfscldeleg *dp; 257 struct nfsfh *nfhp; 258 struct nfsnode *np = VTONFS(vp); 259 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 260 u_int32_t mode, clidrev; 261 int ret, newone, error, expireret = 0, retrycnt; 262 263 /* 264 * For NFSv4, Open Ops are only done on Regular Files. 265 */ 266 if (vnode_vtype(vp) != VREG) 267 return (0); 268 mode = 0; 269 if (amode & FREAD) 270 mode |= NFSV4OPEN_ACCESSREAD; 271 if (amode & FWRITE) 272 mode |= NFSV4OPEN_ACCESSWRITE; 273 nfhp = np->n_fhp; 274 275 retrycnt = 0; 276 #ifdef notdef 277 { char name[100]; int namel; 278 namel = (np->n_v4->n4_namelen < 100) ? np->n_v4->n4_namelen : 99; 279 bcopy(NFS4NODENAME(np->n_v4), name, namel); 280 name[namel] = '\0'; 281 printf("rpcopen p=0x%x name=%s",p->p_pid,name); 282 if (nfhp->nfh_len > 0) printf(" fh=0x%x\n",nfhp->nfh_fh[12]); 283 else printf(" fhl=0\n"); 284 } 285 #endif 286 do { 287 dp = NULL; 288 error = nfscl_open(vp, nfhp->nfh_fh, nfhp->nfh_len, mode, 1, 289 cred, p, NULL, &op, &newone, &ret, 1); 290 if (error) { 291 return (error); 292 } 293 if (nmp->nm_clp != NULL) 294 clidrev = nmp->nm_clp->nfsc_clientidrev; 295 else 296 clidrev = 0; 297 if (ret == NFSCLOPEN_DOOPEN) { 298 if (np->n_v4 != NULL) { 299 error = nfsrpc_openrpc(nmp, vp, np->n_v4->n4_data, 300 np->n_v4->n4_fhlen, np->n_fhp->nfh_fh, 301 np->n_fhp->nfh_len, mode, op, 302 NFS4NODENAME(np->n_v4), np->n_v4->n4_namelen, &dp, 303 0, 0x0, cred, p, 0, 0); 304 if (dp != NULL) { 305 #ifdef APPLE 306 OSBitAndAtomic((int32_t)~NDELEGMOD, (UInt32 *)&np->n_flag); 307 #else 308 NFSLOCKNODE(np); 309 np->n_flag &= ~NDELEGMOD; 310 /* 311 * Invalidate the attribute cache, so that 312 * attributes that pre-date the issue of a 313 * delegation are not cached, since the 314 * cached attributes will remain valid while 315 * the delegation is held. 316 */ 317 NFSINVALATTRCACHE(np); 318 NFSUNLOCKNODE(np); 319 #endif 320 (void) nfscl_deleg(nmp->nm_mountp, 321 op->nfso_own->nfsow_clp, 322 nfhp->nfh_fh, nfhp->nfh_len, cred, p, &dp); 323 } 324 } else { 325 error = EIO; 326 } 327 newnfs_copyincred(cred, &op->nfso_cred); 328 } else if (ret == NFSCLOPEN_SETCRED) 329 /* 330 * This is a new local open on a delegation. It needs 331 * to have credentials so that an open can be done 332 * against the server during recovery. 333 */ 334 newnfs_copyincred(cred, &op->nfso_cred); 335 336 /* 337 * nfso_opencnt is the count of how many VOP_OPEN()s have 338 * been done on this Open successfully and a VOP_CLOSE() 339 * is expected for each of these. 340 * If error is non-zero, don't increment it, since the Open 341 * hasn't succeeded yet. 342 */ 343 if (!error) 344 op->nfso_opencnt++; 345 nfscl_openrelease(op, error, newone); 346 if (error == NFSERR_GRACE || error == NFSERR_STALECLIENTID || 347 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 348 error == NFSERR_BADSESSION) { 349 (void) nfs_catnap(PZERO, error, "nfs_open"); 350 } else if ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) 351 && clidrev != 0) { 352 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p); 353 retrycnt++; 354 } 355 } while (error == NFSERR_GRACE || error == NFSERR_STALECLIENTID || 356 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 357 error == NFSERR_BADSESSION || 358 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) && 359 expireret == 0 && clidrev != 0 && retrycnt < 4)); 360 if (error && retrycnt >= 4) 361 error = EIO; 362 return (error); 363 } 364 365 /* 366 * the actual open rpc 367 */ 368 APPLESTATIC int 369 nfsrpc_openrpc(struct nfsmount *nmp, vnode_t vp, u_int8_t *nfhp, int fhlen, 370 u_int8_t *newfhp, int newfhlen, u_int32_t mode, struct nfsclopen *op, 371 u_int8_t *name, int namelen, struct nfscldeleg **dpp, 372 int reclaim, u_int32_t delegtype, struct ucred *cred, NFSPROC_T *p, 373 int syscred, int recursed) 374 { 375 u_int32_t *tl; 376 struct nfsrv_descript nfsd, *nd = &nfsd; 377 struct nfscldeleg *dp, *ndp = NULL; 378 struct nfsvattr nfsva; 379 u_int32_t rflags, deleg; 380 nfsattrbit_t attrbits; 381 int error, ret, acesize, limitby; 382 383 dp = *dpp; 384 *dpp = NULL; 385 nfscl_reqstart(nd, NFSPROC_OPEN, nmp, nfhp, fhlen, NULL, NULL); 386 NFSM_BUILD(tl, u_int32_t *, 5 * NFSX_UNSIGNED); 387 *tl++ = txdr_unsigned(op->nfso_own->nfsow_seqid); 388 *tl++ = txdr_unsigned(mode & NFSV4OPEN_ACCESSBOTH); 389 *tl++ = txdr_unsigned((mode >> NFSLCK_SHIFT) & NFSV4OPEN_DENYBOTH); 390 *tl++ = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[0]; 391 *tl = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[1]; 392 (void) nfsm_strtom(nd, op->nfso_own->nfsow_owner, NFSV4CL_LOCKNAMELEN); 393 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 394 *tl++ = txdr_unsigned(NFSV4OPEN_NOCREATE); 395 if (reclaim) { 396 *tl = txdr_unsigned(NFSV4OPEN_CLAIMPREVIOUS); 397 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 398 *tl = txdr_unsigned(delegtype); 399 } else { 400 if (dp != NULL) { 401 *tl = txdr_unsigned(NFSV4OPEN_CLAIMDELEGATECUR); 402 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID); 403 if (NFSHASNFSV4N(nmp)) 404 *tl++ = 0; 405 else 406 *tl++ = dp->nfsdl_stateid.seqid; 407 *tl++ = dp->nfsdl_stateid.other[0]; 408 *tl++ = dp->nfsdl_stateid.other[1]; 409 *tl = dp->nfsdl_stateid.other[2]; 410 } else { 411 *tl = txdr_unsigned(NFSV4OPEN_CLAIMNULL); 412 } 413 (void) nfsm_strtom(nd, name, namelen); 414 } 415 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 416 *tl = txdr_unsigned(NFSV4OP_GETATTR); 417 NFSZERO_ATTRBIT(&attrbits); 418 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_CHANGE); 419 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_TIMEMODIFY); 420 (void) nfsrv_putattrbit(nd, &attrbits); 421 if (syscred) 422 nd->nd_flag |= ND_USEGSSNAME; 423 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, vp, p, cred, 424 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 425 if (error) 426 return (error); 427 NFSCL_INCRSEQID(op->nfso_own->nfsow_seqid, nd); 428 if (!nd->nd_repstat) { 429 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID + 430 6 * NFSX_UNSIGNED); 431 op->nfso_stateid.seqid = *tl++; 432 op->nfso_stateid.other[0] = *tl++; 433 op->nfso_stateid.other[1] = *tl++; 434 op->nfso_stateid.other[2] = *tl; 435 rflags = fxdr_unsigned(u_int32_t, *(tl + 6)); 436 error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL); 437 if (error) 438 goto nfsmout; 439 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 440 deleg = fxdr_unsigned(u_int32_t, *tl); 441 if (deleg == NFSV4OPEN_DELEGATEREAD || 442 deleg == NFSV4OPEN_DELEGATEWRITE) { 443 if (!(op->nfso_own->nfsow_clp->nfsc_flags & 444 NFSCLFLAGS_FIRSTDELEG)) 445 op->nfso_own->nfsow_clp->nfsc_flags |= 446 (NFSCLFLAGS_FIRSTDELEG | NFSCLFLAGS_GOTDELEG); 447 MALLOC(ndp, struct nfscldeleg *, 448 sizeof (struct nfscldeleg) + newfhlen, 449 M_NFSCLDELEG, M_WAITOK); 450 LIST_INIT(&ndp->nfsdl_owner); 451 LIST_INIT(&ndp->nfsdl_lock); 452 ndp->nfsdl_clp = op->nfso_own->nfsow_clp; 453 ndp->nfsdl_fhlen = newfhlen; 454 NFSBCOPY(newfhp, ndp->nfsdl_fh, newfhlen); 455 newnfs_copyincred(cred, &ndp->nfsdl_cred); 456 nfscl_lockinit(&ndp->nfsdl_rwlock); 457 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID + 458 NFSX_UNSIGNED); 459 ndp->nfsdl_stateid.seqid = *tl++; 460 ndp->nfsdl_stateid.other[0] = *tl++; 461 ndp->nfsdl_stateid.other[1] = *tl++; 462 ndp->nfsdl_stateid.other[2] = *tl++; 463 ret = fxdr_unsigned(int, *tl); 464 if (deleg == NFSV4OPEN_DELEGATEWRITE) { 465 ndp->nfsdl_flags = NFSCLDL_WRITE; 466 /* 467 * Indicates how much the file can grow. 468 */ 469 NFSM_DISSECT(tl, u_int32_t *, 470 3 * NFSX_UNSIGNED); 471 limitby = fxdr_unsigned(int, *tl++); 472 switch (limitby) { 473 case NFSV4OPEN_LIMITSIZE: 474 ndp->nfsdl_sizelimit = fxdr_hyper(tl); 475 break; 476 case NFSV4OPEN_LIMITBLOCKS: 477 ndp->nfsdl_sizelimit = 478 fxdr_unsigned(u_int64_t, *tl++); 479 ndp->nfsdl_sizelimit *= 480 fxdr_unsigned(u_int64_t, *tl); 481 break; 482 default: 483 error = NFSERR_BADXDR; 484 goto nfsmout; 485 }; 486 } else { 487 ndp->nfsdl_flags = NFSCLDL_READ; 488 } 489 if (ret) 490 ndp->nfsdl_flags |= NFSCLDL_RECALL; 491 error = nfsrv_dissectace(nd, &ndp->nfsdl_ace, &ret, 492 &acesize, p); 493 if (error) 494 goto nfsmout; 495 } else if (deleg != NFSV4OPEN_DELEGATENONE) { 496 error = NFSERR_BADXDR; 497 goto nfsmout; 498 } 499 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 500 error = nfsv4_loadattr(nd, NULL, &nfsva, NULL, 501 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0, 502 NULL, NULL, NULL, p, cred); 503 if (error) 504 goto nfsmout; 505 if (ndp != NULL) { 506 ndp->nfsdl_change = nfsva.na_filerev; 507 ndp->nfsdl_modtime = nfsva.na_mtime; 508 ndp->nfsdl_flags |= NFSCLDL_MODTIMESET; 509 } 510 if (!reclaim && (rflags & NFSV4OPEN_RESULTCONFIRM)) { 511 do { 512 ret = nfsrpc_openconfirm(vp, newfhp, newfhlen, op, 513 cred, p); 514 if (ret == NFSERR_DELAY) 515 (void) nfs_catnap(PZERO, ret, "nfs_open"); 516 } while (ret == NFSERR_DELAY); 517 error = ret; 518 } 519 if ((rflags & NFSV4OPEN_LOCKTYPEPOSIX) || 520 nfscl_assumeposixlocks) 521 op->nfso_posixlock = 1; 522 else 523 op->nfso_posixlock = 0; 524 525 /* 526 * If the server is handing out delegations, but we didn't 527 * get one because an OpenConfirm was required, try the 528 * Open again, to get a delegation. This is a harmless no-op, 529 * from a server's point of view. 530 */ 531 if (!reclaim && (rflags & NFSV4OPEN_RESULTCONFIRM) && 532 (op->nfso_own->nfsow_clp->nfsc_flags & NFSCLFLAGS_GOTDELEG) 533 && !error && dp == NULL && ndp == NULL && !recursed) { 534 do { 535 ret = nfsrpc_openrpc(nmp, vp, nfhp, fhlen, newfhp, 536 newfhlen, mode, op, name, namelen, &ndp, 0, 0x0, 537 cred, p, syscred, 1); 538 if (ret == NFSERR_DELAY) 539 (void) nfs_catnap(PZERO, ret, "nfs_open2"); 540 } while (ret == NFSERR_DELAY); 541 if (ret) { 542 if (ndp != NULL) 543 FREE((caddr_t)ndp, M_NFSCLDELEG); 544 if (ret == NFSERR_STALECLIENTID || 545 ret == NFSERR_STALEDONTRECOVER || 546 ret == NFSERR_BADSESSION) 547 error = ret; 548 } 549 } 550 } 551 if (nd->nd_repstat != 0 && error == 0) 552 error = nd->nd_repstat; 553 if (error == NFSERR_STALECLIENTID || error == NFSERR_BADSESSION) 554 nfscl_initiate_recovery(op->nfso_own->nfsow_clp); 555 nfsmout: 556 if (!error) 557 *dpp = ndp; 558 else if (ndp != NULL) 559 FREE((caddr_t)ndp, M_NFSCLDELEG); 560 mbuf_freem(nd->nd_mrep); 561 return (error); 562 } 563 564 /* 565 * open downgrade rpc 566 */ 567 APPLESTATIC int 568 nfsrpc_opendowngrade(vnode_t vp, u_int32_t mode, struct nfsclopen *op, 569 struct ucred *cred, NFSPROC_T *p) 570 { 571 u_int32_t *tl; 572 struct nfsrv_descript nfsd, *nd = &nfsd; 573 int error; 574 575 NFSCL_REQSTART(nd, NFSPROC_OPENDOWNGRADE, vp); 576 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID + 3 * NFSX_UNSIGNED); 577 if (NFSHASNFSV4N(VFSTONFS(vnode_mount(vp)))) 578 *tl++ = 0; 579 else 580 *tl++ = op->nfso_stateid.seqid; 581 *tl++ = op->nfso_stateid.other[0]; 582 *tl++ = op->nfso_stateid.other[1]; 583 *tl++ = op->nfso_stateid.other[2]; 584 *tl++ = txdr_unsigned(op->nfso_own->nfsow_seqid); 585 *tl++ = txdr_unsigned(mode & NFSV4OPEN_ACCESSBOTH); 586 *tl = txdr_unsigned((mode >> NFSLCK_SHIFT) & NFSV4OPEN_DENYBOTH); 587 error = nfscl_request(nd, vp, p, cred, NULL); 588 if (error) 589 return (error); 590 NFSCL_INCRSEQID(op->nfso_own->nfsow_seqid, nd); 591 if (!nd->nd_repstat) { 592 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID); 593 op->nfso_stateid.seqid = *tl++; 594 op->nfso_stateid.other[0] = *tl++; 595 op->nfso_stateid.other[1] = *tl++; 596 op->nfso_stateid.other[2] = *tl; 597 } 598 if (nd->nd_repstat && error == 0) 599 error = nd->nd_repstat; 600 if (error == NFSERR_STALESTATEID || error == NFSERR_BADSESSION) 601 nfscl_initiate_recovery(op->nfso_own->nfsow_clp); 602 nfsmout: 603 mbuf_freem(nd->nd_mrep); 604 return (error); 605 } 606 607 /* 608 * V4 Close operation. 609 */ 610 APPLESTATIC int 611 nfsrpc_close(vnode_t vp, int doclose, NFSPROC_T *p) 612 { 613 struct nfsclclient *clp; 614 int error; 615 616 if (vnode_vtype(vp) != VREG) 617 return (0); 618 if (doclose) 619 error = nfscl_doclose(vp, &clp, p); 620 else 621 error = nfscl_getclose(vp, &clp); 622 if (error) 623 return (error); 624 625 nfscl_clientrelease(clp); 626 return (0); 627 } 628 629 /* 630 * Close the open. 631 */ 632 APPLESTATIC void 633 nfsrpc_doclose(struct nfsmount *nmp, struct nfsclopen *op, NFSPROC_T *p) 634 { 635 struct nfsrv_descript nfsd, *nd = &nfsd; 636 struct nfscllockowner *lp, *nlp; 637 struct nfscllock *lop, *nlop; 638 struct ucred *tcred; 639 u_int64_t off = 0, len = 0; 640 u_int32_t type = NFSV4LOCKT_READ; 641 int error, do_unlock, trycnt; 642 643 tcred = newnfs_getcred(); 644 newnfs_copycred(&op->nfso_cred, tcred); 645 /* 646 * (Theoretically this could be done in the same 647 * compound as the close, but having multiple 648 * sequenced Ops in the same compound might be 649 * too scary for some servers.) 650 */ 651 if (op->nfso_posixlock) { 652 off = 0; 653 len = NFS64BITSSET; 654 type = NFSV4LOCKT_READ; 655 } 656 657 /* 658 * Since this function is only called from VOP_INACTIVE(), no 659 * other thread will be manipulating this Open. As such, the 660 * lock lists are not being changed by other threads, so it should 661 * be safe to do this without locking. 662 */ 663 LIST_FOREACH(lp, &op->nfso_lock, nfsl_list) { 664 do_unlock = 1; 665 LIST_FOREACH_SAFE(lop, &lp->nfsl_lock, nfslo_list, nlop) { 666 if (op->nfso_posixlock == 0) { 667 off = lop->nfslo_first; 668 len = lop->nfslo_end - lop->nfslo_first; 669 if (lop->nfslo_type == F_WRLCK) 670 type = NFSV4LOCKT_WRITE; 671 else 672 type = NFSV4LOCKT_READ; 673 } 674 if (do_unlock) { 675 trycnt = 0; 676 do { 677 error = nfsrpc_locku(nd, nmp, lp, off, 678 len, type, tcred, p, 0); 679 if ((nd->nd_repstat == NFSERR_GRACE || 680 nd->nd_repstat == NFSERR_DELAY) && 681 error == 0) 682 (void) nfs_catnap(PZERO, 683 (int)nd->nd_repstat, 684 "nfs_close"); 685 } while ((nd->nd_repstat == NFSERR_GRACE || 686 nd->nd_repstat == NFSERR_DELAY) && 687 error == 0 && trycnt++ < 5); 688 if (op->nfso_posixlock) 689 do_unlock = 0; 690 } 691 nfscl_freelock(lop, 0); 692 } 693 /* 694 * Do a ReleaseLockOwner. 695 * The lock owner name nfsl_owner may be used by other opens for 696 * other files but the lock_owner4 name that nfsrpc_rellockown() 697 * puts on the wire has the file handle for this file appended 698 * to it, so it can be done now. 699 */ 700 (void)nfsrpc_rellockown(nmp, lp, lp->nfsl_open->nfso_fh, 701 lp->nfsl_open->nfso_fhlen, tcred, p); 702 } 703 704 /* 705 * There could be other Opens for different files on the same 706 * OpenOwner, so locking is required. 707 */ 708 NFSLOCKCLSTATE(); 709 nfscl_lockexcl(&op->nfso_own->nfsow_rwlock, NFSCLSTATEMUTEXPTR); 710 NFSUNLOCKCLSTATE(); 711 do { 712 error = nfscl_tryclose(op, tcred, nmp, p); 713 if (error == NFSERR_GRACE) 714 (void) nfs_catnap(PZERO, error, "nfs_close"); 715 } while (error == NFSERR_GRACE); 716 NFSLOCKCLSTATE(); 717 nfscl_lockunlock(&op->nfso_own->nfsow_rwlock); 718 719 LIST_FOREACH_SAFE(lp, &op->nfso_lock, nfsl_list, nlp) 720 nfscl_freelockowner(lp, 0); 721 nfscl_freeopen(op, 0); 722 NFSUNLOCKCLSTATE(); 723 NFSFREECRED(tcred); 724 } 725 726 /* 727 * The actual Close RPC. 728 */ 729 APPLESTATIC int 730 nfsrpc_closerpc(struct nfsrv_descript *nd, struct nfsmount *nmp, 731 struct nfsclopen *op, struct ucred *cred, NFSPROC_T *p, 732 int syscred) 733 { 734 u_int32_t *tl; 735 int error; 736 737 nfscl_reqstart(nd, NFSPROC_CLOSE, nmp, op->nfso_fh, 738 op->nfso_fhlen, NULL, NULL); 739 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED + NFSX_STATEID); 740 *tl++ = txdr_unsigned(op->nfso_own->nfsow_seqid); 741 if (NFSHASNFSV4N(nmp)) 742 *tl++ = 0; 743 else 744 *tl++ = op->nfso_stateid.seqid; 745 *tl++ = op->nfso_stateid.other[0]; 746 *tl++ = op->nfso_stateid.other[1]; 747 *tl = op->nfso_stateid.other[2]; 748 if (syscred) 749 nd->nd_flag |= ND_USEGSSNAME; 750 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 751 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 752 if (error) 753 return (error); 754 NFSCL_INCRSEQID(op->nfso_own->nfsow_seqid, nd); 755 if (nd->nd_repstat == 0) 756 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID); 757 error = nd->nd_repstat; 758 if (error == NFSERR_STALESTATEID || error == NFSERR_BADSESSION) 759 nfscl_initiate_recovery(op->nfso_own->nfsow_clp); 760 nfsmout: 761 mbuf_freem(nd->nd_mrep); 762 return (error); 763 } 764 765 /* 766 * V4 Open Confirm RPC. 767 */ 768 APPLESTATIC int 769 nfsrpc_openconfirm(vnode_t vp, u_int8_t *nfhp, int fhlen, 770 struct nfsclopen *op, struct ucred *cred, NFSPROC_T *p) 771 { 772 u_int32_t *tl; 773 struct nfsrv_descript nfsd, *nd = &nfsd; 774 struct nfsmount *nmp; 775 int error; 776 777 nmp = VFSTONFS(vnode_mount(vp)); 778 if (NFSHASNFSV4N(nmp)) 779 return (0); /* No confirmation for NFSv4.1. */ 780 nfscl_reqstart(nd, NFSPROC_OPENCONFIRM, nmp, nfhp, fhlen, NULL, NULL); 781 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED + NFSX_STATEID); 782 *tl++ = op->nfso_stateid.seqid; 783 *tl++ = op->nfso_stateid.other[0]; 784 *tl++ = op->nfso_stateid.other[1]; 785 *tl++ = op->nfso_stateid.other[2]; 786 *tl = txdr_unsigned(op->nfso_own->nfsow_seqid); 787 error = nfscl_request(nd, vp, p, cred, NULL); 788 if (error) 789 return (error); 790 NFSCL_INCRSEQID(op->nfso_own->nfsow_seqid, nd); 791 if (!nd->nd_repstat) { 792 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID); 793 op->nfso_stateid.seqid = *tl++; 794 op->nfso_stateid.other[0] = *tl++; 795 op->nfso_stateid.other[1] = *tl++; 796 op->nfso_stateid.other[2] = *tl; 797 } 798 error = nd->nd_repstat; 799 if (error == NFSERR_STALESTATEID || error == NFSERR_BADSESSION) 800 nfscl_initiate_recovery(op->nfso_own->nfsow_clp); 801 nfsmout: 802 mbuf_freem(nd->nd_mrep); 803 return (error); 804 } 805 806 /* 807 * Do the setclientid and setclientid confirm RPCs. Called from nfs_statfs() 808 * when a mount has just occurred and when the server replies NFSERR_EXPIRED. 809 */ 810 APPLESTATIC int 811 nfsrpc_setclient(struct nfsmount *nmp, struct nfsclclient *clp, int reclaim, 812 struct ucred *cred, NFSPROC_T *p) 813 { 814 u_int32_t *tl; 815 struct nfsrv_descript nfsd; 816 struct nfsrv_descript *nd = &nfsd; 817 nfsattrbit_t attrbits; 818 u_int8_t *cp = NULL, *cp2, addr[INET6_ADDRSTRLEN + 9]; 819 u_short port; 820 int error, isinet6 = 0, callblen; 821 nfsquad_t confirm; 822 u_int32_t lease; 823 static u_int32_t rev = 0; 824 struct nfsclds *dsp, *ndsp, *tdsp; 825 826 if (nfsboottime.tv_sec == 0) 827 NFSSETBOOTTIME(nfsboottime); 828 clp->nfsc_rev = rev++; 829 if (NFSHASNFSV4N(nmp)) { 830 error = nfsrpc_exchangeid(nmp, clp, &nmp->nm_sockreq, 831 NFSV4EXCH_USEPNFSMDS | NFSV4EXCH_USENONPNFS, &dsp, cred, p); 832 NFSCL_DEBUG(1, "aft exch=%d\n", error); 833 if (error == 0) { 834 error = nfsrpc_createsession(nmp, &dsp->nfsclds_sess, 835 &nmp->nm_sockreq, 836 dsp->nfsclds_sess.nfsess_sequenceid, 1, cred, p); 837 if (error == 0) { 838 NFSLOCKMNT(nmp); 839 TAILQ_FOREACH_SAFE(tdsp, &nmp->nm_sess, 840 nfsclds_list, ndsp) 841 nfscl_freenfsclds(tdsp); 842 TAILQ_INIT(&nmp->nm_sess); 843 TAILQ_INSERT_HEAD(&nmp->nm_sess, dsp, 844 nfsclds_list); 845 NFSUNLOCKMNT(nmp); 846 } else 847 nfscl_freenfsclds(dsp); 848 NFSCL_DEBUG(1, "aft createsess=%d\n", error); 849 } 850 if (error == 0 && reclaim == 0) { 851 error = nfsrpc_reclaimcomplete(nmp, cred, p); 852 NFSCL_DEBUG(1, "aft reclaimcomp=%d\n", error); 853 if (error == NFSERR_COMPLETEALREADY || 854 error == NFSERR_NOTSUPP) 855 /* Ignore this error. */ 856 error = 0; 857 } 858 return (error); 859 } 860 861 /* 862 * Allocate a single session structure for NFSv4.0, because some of 863 * the fields are used by NFSv4.0 although it doesn't do a session. 864 */ 865 dsp = malloc(sizeof(struct nfsclds), M_NFSCLDS, M_WAITOK | M_ZERO); 866 mtx_init(&dsp->nfsclds_mtx, "nfsds", NULL, MTX_DEF); 867 mtx_init(&dsp->nfsclds_sess.nfsess_mtx, "nfssession", NULL, MTX_DEF); 868 NFSLOCKMNT(nmp); 869 TAILQ_INSERT_HEAD(&nmp->nm_sess, dsp, nfsclds_list); 870 NFSUNLOCKMNT(nmp); 871 872 nfscl_reqstart(nd, NFSPROC_SETCLIENTID, nmp, NULL, 0, NULL, NULL); 873 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 874 *tl++ = txdr_unsigned(nfsboottime.tv_sec); 875 *tl = txdr_unsigned(clp->nfsc_rev); 876 (void) nfsm_strtom(nd, clp->nfsc_id, clp->nfsc_idlen); 877 878 /* 879 * set up the callback address 880 */ 881 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 882 *tl = txdr_unsigned(NFS_CALLBCKPROG); 883 callblen = strlen(nfsv4_callbackaddr); 884 if (callblen == 0) 885 cp = nfscl_getmyip(nmp, &isinet6); 886 if (nfscl_enablecallb && nfs_numnfscbd > 0 && 887 (callblen > 0 || cp != NULL)) { 888 port = htons(nfsv4_cbport); 889 cp2 = (u_int8_t *)&port; 890 #ifdef INET6 891 if ((callblen > 0 && 892 strchr(nfsv4_callbackaddr, ':')) || isinet6) { 893 char ip6buf[INET6_ADDRSTRLEN], *ip6add; 894 895 (void) nfsm_strtom(nd, "tcp6", 4); 896 if (callblen == 0) { 897 ip6_sprintf(ip6buf, (struct in6_addr *)cp); 898 ip6add = ip6buf; 899 } else { 900 ip6add = nfsv4_callbackaddr; 901 } 902 snprintf(addr, INET6_ADDRSTRLEN + 9, "%s.%d.%d", 903 ip6add, cp2[0], cp2[1]); 904 } else 905 #endif 906 { 907 (void) nfsm_strtom(nd, "tcp", 3); 908 if (callblen == 0) 909 snprintf(addr, INET6_ADDRSTRLEN + 9, 910 "%d.%d.%d.%d.%d.%d", cp[0], cp[1], 911 cp[2], cp[3], cp2[0], cp2[1]); 912 else 913 snprintf(addr, INET6_ADDRSTRLEN + 9, 914 "%s.%d.%d", nfsv4_callbackaddr, 915 cp2[0], cp2[1]); 916 } 917 (void) nfsm_strtom(nd, addr, strlen(addr)); 918 } else { 919 (void) nfsm_strtom(nd, "tcp", 3); 920 (void) nfsm_strtom(nd, "0.0.0.0.0.0", 11); 921 } 922 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 923 *tl = txdr_unsigned(clp->nfsc_cbident); 924 nd->nd_flag |= ND_USEGSSNAME; 925 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 926 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 927 if (error) 928 return (error); 929 if (nd->nd_repstat == 0) { 930 NFSM_DISSECT(tl, u_int32_t *, 4 * NFSX_UNSIGNED); 931 NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[0] = *tl++; 932 NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[1] = *tl++; 933 confirm.lval[0] = *tl++; 934 confirm.lval[1] = *tl; 935 mbuf_freem(nd->nd_mrep); 936 nd->nd_mrep = NULL; 937 938 /* 939 * and confirm it. 940 */ 941 nfscl_reqstart(nd, NFSPROC_SETCLIENTIDCFRM, nmp, NULL, 0, NULL, 942 NULL); 943 NFSM_BUILD(tl, u_int32_t *, 4 * NFSX_UNSIGNED); 944 *tl++ = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[0]; 945 *tl++ = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[1]; 946 *tl++ = confirm.lval[0]; 947 *tl = confirm.lval[1]; 948 nd->nd_flag |= ND_USEGSSNAME; 949 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, 950 cred, NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 951 if (error) 952 return (error); 953 mbuf_freem(nd->nd_mrep); 954 nd->nd_mrep = NULL; 955 if (nd->nd_repstat == 0) { 956 nfscl_reqstart(nd, NFSPROC_GETATTR, nmp, nmp->nm_fh, 957 nmp->nm_fhsize, NULL, NULL); 958 NFSZERO_ATTRBIT(&attrbits); 959 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_LEASETIME); 960 (void) nfsrv_putattrbit(nd, &attrbits); 961 nd->nd_flag |= ND_USEGSSNAME; 962 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, 963 cred, NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 964 if (error) 965 return (error); 966 if (nd->nd_repstat == 0) { 967 error = nfsv4_loadattr(nd, NULL, NULL, NULL, NULL, 0, NULL, 968 NULL, NULL, NULL, NULL, 0, NULL, &lease, NULL, p, cred); 969 if (error) 970 goto nfsmout; 971 clp->nfsc_renew = NFSCL_RENEW(lease); 972 clp->nfsc_expire = NFSD_MONOSEC + clp->nfsc_renew; 973 clp->nfsc_clientidrev++; 974 if (clp->nfsc_clientidrev == 0) 975 clp->nfsc_clientidrev++; 976 } 977 } 978 } 979 error = nd->nd_repstat; 980 nfsmout: 981 mbuf_freem(nd->nd_mrep); 982 return (error); 983 } 984 985 /* 986 * nfs getattr call. 987 */ 988 APPLESTATIC int 989 nfsrpc_getattr(vnode_t vp, struct ucred *cred, NFSPROC_T *p, 990 struct nfsvattr *nap, void *stuff) 991 { 992 struct nfsrv_descript nfsd, *nd = &nfsd; 993 int error; 994 nfsattrbit_t attrbits; 995 996 NFSCL_REQSTART(nd, NFSPROC_GETATTR, vp); 997 if (nd->nd_flag & ND_NFSV4) { 998 NFSGETATTR_ATTRBIT(&attrbits); 999 (void) nfsrv_putattrbit(nd, &attrbits); 1000 } 1001 error = nfscl_request(nd, vp, p, cred, stuff); 1002 if (error) 1003 return (error); 1004 if (!nd->nd_repstat) 1005 error = nfsm_loadattr(nd, nap); 1006 else 1007 error = nd->nd_repstat; 1008 mbuf_freem(nd->nd_mrep); 1009 return (error); 1010 } 1011 1012 /* 1013 * nfs getattr call with non-vnode arguemnts. 1014 */ 1015 APPLESTATIC int 1016 nfsrpc_getattrnovp(struct nfsmount *nmp, u_int8_t *fhp, int fhlen, int syscred, 1017 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, u_int64_t *xidp, 1018 uint32_t *leasep) 1019 { 1020 struct nfsrv_descript nfsd, *nd = &nfsd; 1021 int error, vers = NFS_VER2; 1022 nfsattrbit_t attrbits; 1023 1024 nfscl_reqstart(nd, NFSPROC_GETATTR, nmp, fhp, fhlen, NULL, NULL); 1025 if (nd->nd_flag & ND_NFSV4) { 1026 vers = NFS_VER4; 1027 NFSGETATTR_ATTRBIT(&attrbits); 1028 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_LEASETIME); 1029 (void) nfsrv_putattrbit(nd, &attrbits); 1030 } else if (nd->nd_flag & ND_NFSV3) { 1031 vers = NFS_VER3; 1032 } 1033 if (syscred) 1034 nd->nd_flag |= ND_USEGSSNAME; 1035 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 1036 NFS_PROG, vers, NULL, 1, xidp, NULL); 1037 if (error) 1038 return (error); 1039 if (nd->nd_repstat == 0) { 1040 if ((nd->nd_flag & ND_NFSV4) != 0) 1041 error = nfsv4_loadattr(nd, NULL, nap, NULL, NULL, 0, 1042 NULL, NULL, NULL, NULL, NULL, 0, NULL, leasep, NULL, 1043 NULL, NULL); 1044 else 1045 error = nfsm_loadattr(nd, nap); 1046 } else 1047 error = nd->nd_repstat; 1048 mbuf_freem(nd->nd_mrep); 1049 return (error); 1050 } 1051 1052 /* 1053 * Do an nfs setattr operation. 1054 */ 1055 APPLESTATIC int 1056 nfsrpc_setattr(vnode_t vp, struct vattr *vap, NFSACL_T *aclp, 1057 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *rnap, int *attrflagp, 1058 void *stuff) 1059 { 1060 int error, expireret = 0, openerr, retrycnt; 1061 u_int32_t clidrev = 0, mode; 1062 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 1063 struct nfsfh *nfhp; 1064 nfsv4stateid_t stateid; 1065 void *lckp; 1066 1067 if (nmp->nm_clp != NULL) 1068 clidrev = nmp->nm_clp->nfsc_clientidrev; 1069 if (vap != NULL && NFSATTRISSET(u_quad_t, vap, va_size)) 1070 mode = NFSV4OPEN_ACCESSWRITE; 1071 else 1072 mode = NFSV4OPEN_ACCESSREAD; 1073 retrycnt = 0; 1074 do { 1075 lckp = NULL; 1076 openerr = 1; 1077 if (NFSHASNFSV4(nmp)) { 1078 nfhp = VTONFS(vp)->n_fhp; 1079 error = nfscl_getstateid(vp, nfhp->nfh_fh, 1080 nfhp->nfh_len, mode, 0, cred, p, &stateid, &lckp); 1081 if (error && vnode_vtype(vp) == VREG && 1082 (mode == NFSV4OPEN_ACCESSWRITE || 1083 nfstest_openallsetattr)) { 1084 /* 1085 * No Open stateid, so try and open the file 1086 * now. 1087 */ 1088 if (mode == NFSV4OPEN_ACCESSWRITE) 1089 openerr = nfsrpc_open(vp, FWRITE, cred, 1090 p); 1091 else 1092 openerr = nfsrpc_open(vp, FREAD, cred, 1093 p); 1094 if (!openerr) 1095 (void) nfscl_getstateid(vp, 1096 nfhp->nfh_fh, nfhp->nfh_len, 1097 mode, 0, cred, p, &stateid, &lckp); 1098 } 1099 } 1100 if (vap != NULL) 1101 error = nfsrpc_setattrrpc(vp, vap, &stateid, cred, p, 1102 rnap, attrflagp, stuff); 1103 else 1104 error = nfsrpc_setaclrpc(vp, cred, p, aclp, &stateid, 1105 stuff); 1106 if (error == NFSERR_STALESTATEID || error == NFSERR_BADSESSION) 1107 nfscl_initiate_recovery(nmp->nm_clp); 1108 if (lckp != NULL) 1109 nfscl_lockderef(lckp); 1110 if (!openerr) 1111 (void) nfsrpc_close(vp, 0, p); 1112 if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 1113 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 1114 error == NFSERR_OLDSTATEID || error == NFSERR_BADSESSION) { 1115 (void) nfs_catnap(PZERO, error, "nfs_setattr"); 1116 } else if ((error == NFSERR_EXPIRED || 1117 error == NFSERR_BADSTATEID) && clidrev != 0) { 1118 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p); 1119 } 1120 retrycnt++; 1121 } while (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 1122 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 1123 error == NFSERR_BADSESSION || 1124 (error == NFSERR_OLDSTATEID && retrycnt < 20) || 1125 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) && 1126 expireret == 0 && clidrev != 0 && retrycnt < 4)); 1127 if (error && retrycnt >= 4) 1128 error = EIO; 1129 return (error); 1130 } 1131 1132 static int 1133 nfsrpc_setattrrpc(vnode_t vp, struct vattr *vap, 1134 nfsv4stateid_t *stateidp, struct ucred *cred, NFSPROC_T *p, 1135 struct nfsvattr *rnap, int *attrflagp, void *stuff) 1136 { 1137 u_int32_t *tl; 1138 struct nfsrv_descript nfsd, *nd = &nfsd; 1139 int error; 1140 nfsattrbit_t attrbits; 1141 1142 *attrflagp = 0; 1143 NFSCL_REQSTART(nd, NFSPROC_SETATTR, vp); 1144 if (nd->nd_flag & ND_NFSV4) 1145 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID); 1146 vap->va_type = vnode_vtype(vp); 1147 nfscl_fillsattr(nd, vap, vp, NFSSATTR_FULL, 0); 1148 if (nd->nd_flag & ND_NFSV3) { 1149 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1150 *tl = newnfs_false; 1151 } else if (nd->nd_flag & ND_NFSV4) { 1152 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1153 *tl = txdr_unsigned(NFSV4OP_GETATTR); 1154 NFSGETATTR_ATTRBIT(&attrbits); 1155 (void) nfsrv_putattrbit(nd, &attrbits); 1156 } 1157 error = nfscl_request(nd, vp, p, cred, stuff); 1158 if (error) 1159 return (error); 1160 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) 1161 error = nfscl_wcc_data(nd, vp, rnap, attrflagp, NULL, stuff); 1162 if ((nd->nd_flag & ND_NFSV4) && !error) 1163 error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL); 1164 if (!(nd->nd_flag & ND_NFSV3) && !nd->nd_repstat && !error) 1165 error = nfscl_postop_attr(nd, rnap, attrflagp, stuff); 1166 mbuf_freem(nd->nd_mrep); 1167 if (nd->nd_repstat && !error) 1168 error = nd->nd_repstat; 1169 return (error); 1170 } 1171 1172 /* 1173 * nfs lookup rpc 1174 */ 1175 APPLESTATIC int 1176 nfsrpc_lookup(vnode_t dvp, char *name, int len, struct ucred *cred, 1177 NFSPROC_T *p, struct nfsvattr *dnap, struct nfsvattr *nap, 1178 struct nfsfh **nfhpp, int *attrflagp, int *dattrflagp, void *stuff) 1179 { 1180 u_int32_t *tl; 1181 struct nfsrv_descript nfsd, *nd = &nfsd; 1182 struct nfsmount *nmp; 1183 struct nfsnode *np; 1184 struct nfsfh *nfhp; 1185 nfsattrbit_t attrbits; 1186 int error = 0, lookupp = 0; 1187 1188 *attrflagp = 0; 1189 *dattrflagp = 0; 1190 if (vnode_vtype(dvp) != VDIR) 1191 return (ENOTDIR); 1192 nmp = VFSTONFS(vnode_mount(dvp)); 1193 if (len > NFS_MAXNAMLEN) 1194 return (ENAMETOOLONG); 1195 if (NFSHASNFSV4(nmp) && len == 1 && 1196 name[0] == '.') { 1197 /* 1198 * Just return the current dir's fh. 1199 */ 1200 np = VTONFS(dvp); 1201 MALLOC(nfhp, struct nfsfh *, sizeof (struct nfsfh) + 1202 np->n_fhp->nfh_len, M_NFSFH, M_WAITOK); 1203 nfhp->nfh_len = np->n_fhp->nfh_len; 1204 NFSBCOPY(np->n_fhp->nfh_fh, nfhp->nfh_fh, nfhp->nfh_len); 1205 *nfhpp = nfhp; 1206 return (0); 1207 } 1208 if (NFSHASNFSV4(nmp) && len == 2 && 1209 name[0] == '.' && name[1] == '.') { 1210 lookupp = 1; 1211 NFSCL_REQSTART(nd, NFSPROC_LOOKUPP, dvp); 1212 } else { 1213 NFSCL_REQSTART(nd, NFSPROC_LOOKUP, dvp); 1214 (void) nfsm_strtom(nd, name, len); 1215 } 1216 if (nd->nd_flag & ND_NFSV4) { 1217 NFSGETATTR_ATTRBIT(&attrbits); 1218 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1219 *tl++ = txdr_unsigned(NFSV4OP_GETFH); 1220 *tl = txdr_unsigned(NFSV4OP_GETATTR); 1221 (void) nfsrv_putattrbit(nd, &attrbits); 1222 } 1223 error = nfscl_request(nd, dvp, p, cred, stuff); 1224 if (error) 1225 return (error); 1226 if (nd->nd_repstat) { 1227 /* 1228 * When an NFSv4 Lookupp returns ENOENT, it means that 1229 * the lookup is at the root of an fs, so return this dir. 1230 */ 1231 if (nd->nd_repstat == NFSERR_NOENT && lookupp) { 1232 np = VTONFS(dvp); 1233 MALLOC(nfhp, struct nfsfh *, sizeof (struct nfsfh) + 1234 np->n_fhp->nfh_len, M_NFSFH, M_WAITOK); 1235 nfhp->nfh_len = np->n_fhp->nfh_len; 1236 NFSBCOPY(np->n_fhp->nfh_fh, nfhp->nfh_fh, nfhp->nfh_len); 1237 *nfhpp = nfhp; 1238 mbuf_freem(nd->nd_mrep); 1239 return (0); 1240 } 1241 if (nd->nd_flag & ND_NFSV3) 1242 error = nfscl_postop_attr(nd, dnap, dattrflagp, stuff); 1243 goto nfsmout; 1244 } 1245 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == ND_NFSV4) { 1246 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1247 if (*(tl + 1)) { 1248 nd->nd_flag |= ND_NOMOREDATA; 1249 goto nfsmout; 1250 } 1251 } 1252 error = nfsm_getfh(nd, nfhpp); 1253 if (error) 1254 goto nfsmout; 1255 1256 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 1257 if ((nd->nd_flag & ND_NFSV3) && !error) 1258 error = nfscl_postop_attr(nd, dnap, dattrflagp, stuff); 1259 nfsmout: 1260 mbuf_freem(nd->nd_mrep); 1261 if (!error && nd->nd_repstat) 1262 error = nd->nd_repstat; 1263 return (error); 1264 } 1265 1266 /* 1267 * Do a readlink rpc. 1268 */ 1269 APPLESTATIC int 1270 nfsrpc_readlink(vnode_t vp, struct uio *uiop, struct ucred *cred, 1271 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff) 1272 { 1273 u_int32_t *tl; 1274 struct nfsrv_descript nfsd, *nd = &nfsd; 1275 struct nfsnode *np = VTONFS(vp); 1276 nfsattrbit_t attrbits; 1277 int error, len, cangetattr = 1; 1278 1279 *attrflagp = 0; 1280 NFSCL_REQSTART(nd, NFSPROC_READLINK, vp); 1281 if (nd->nd_flag & ND_NFSV4) { 1282 /* 1283 * And do a Getattr op. 1284 */ 1285 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1286 *tl = txdr_unsigned(NFSV4OP_GETATTR); 1287 NFSGETATTR_ATTRBIT(&attrbits); 1288 (void) nfsrv_putattrbit(nd, &attrbits); 1289 } 1290 error = nfscl_request(nd, vp, p, cred, stuff); 1291 if (error) 1292 return (error); 1293 if (nd->nd_flag & ND_NFSV3) 1294 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 1295 if (!nd->nd_repstat && !error) { 1296 NFSM_STRSIZ(len, NFS_MAXPATHLEN); 1297 /* 1298 * This seems weird to me, but must have been added to 1299 * FreeBSD for some reason. The only thing I can think of 1300 * is that there was/is some server that replies with 1301 * more link data than it should? 1302 */ 1303 if (len == NFS_MAXPATHLEN) { 1304 NFSLOCKNODE(np); 1305 if (np->n_size > 0 && np->n_size < NFS_MAXPATHLEN) { 1306 len = np->n_size; 1307 cangetattr = 0; 1308 } 1309 NFSUNLOCKNODE(np); 1310 } 1311 error = nfsm_mbufuio(nd, uiop, len); 1312 if ((nd->nd_flag & ND_NFSV4) && !error && cangetattr) 1313 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 1314 } 1315 if (nd->nd_repstat && !error) 1316 error = nd->nd_repstat; 1317 nfsmout: 1318 mbuf_freem(nd->nd_mrep); 1319 return (error); 1320 } 1321 1322 /* 1323 * Read operation. 1324 */ 1325 APPLESTATIC int 1326 nfsrpc_read(vnode_t vp, struct uio *uiop, struct ucred *cred, 1327 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff) 1328 { 1329 int error, expireret = 0, retrycnt; 1330 u_int32_t clidrev = 0; 1331 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 1332 struct nfsnode *np = VTONFS(vp); 1333 struct ucred *newcred; 1334 struct nfsfh *nfhp = NULL; 1335 nfsv4stateid_t stateid; 1336 void *lckp; 1337 1338 if (nmp->nm_clp != NULL) 1339 clidrev = nmp->nm_clp->nfsc_clientidrev; 1340 newcred = cred; 1341 if (NFSHASNFSV4(nmp)) { 1342 nfhp = np->n_fhp; 1343 newcred = NFSNEWCRED(cred); 1344 } 1345 retrycnt = 0; 1346 do { 1347 lckp = NULL; 1348 if (NFSHASNFSV4(nmp)) 1349 (void)nfscl_getstateid(vp, nfhp->nfh_fh, nfhp->nfh_len, 1350 NFSV4OPEN_ACCESSREAD, 0, newcred, p, &stateid, 1351 &lckp); 1352 error = nfsrpc_readrpc(vp, uiop, newcred, &stateid, p, nap, 1353 attrflagp, stuff); 1354 if (error == NFSERR_STALESTATEID || error == NFSERR_BADSESSION) 1355 nfscl_initiate_recovery(nmp->nm_clp); 1356 if (lckp != NULL) 1357 nfscl_lockderef(lckp); 1358 if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 1359 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 1360 error == NFSERR_OLDSTATEID || error == NFSERR_BADSESSION) { 1361 (void) nfs_catnap(PZERO, error, "nfs_read"); 1362 } else if ((error == NFSERR_EXPIRED || 1363 error == NFSERR_BADSTATEID) && clidrev != 0) { 1364 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p); 1365 } 1366 retrycnt++; 1367 } while (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 1368 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 1369 error == NFSERR_BADSESSION || 1370 (error == NFSERR_OLDSTATEID && retrycnt < 20) || 1371 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) && 1372 expireret == 0 && clidrev != 0 && retrycnt < 4)); 1373 if (error && retrycnt >= 4) 1374 error = EIO; 1375 if (NFSHASNFSV4(nmp)) 1376 NFSFREECRED(newcred); 1377 return (error); 1378 } 1379 1380 /* 1381 * The actual read RPC. 1382 */ 1383 static int 1384 nfsrpc_readrpc(vnode_t vp, struct uio *uiop, struct ucred *cred, 1385 nfsv4stateid_t *stateidp, NFSPROC_T *p, struct nfsvattr *nap, 1386 int *attrflagp, void *stuff) 1387 { 1388 u_int32_t *tl; 1389 int error = 0, len, retlen, tsiz, eof = 0; 1390 struct nfsrv_descript nfsd; 1391 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 1392 struct nfsrv_descript *nd = &nfsd; 1393 int rsize; 1394 off_t tmp_off; 1395 1396 *attrflagp = 0; 1397 tsiz = uio_uio_resid(uiop); 1398 tmp_off = uiop->uio_offset + tsiz; 1399 NFSLOCKMNT(nmp); 1400 if (tmp_off > nmp->nm_maxfilesize || tmp_off < uiop->uio_offset) { 1401 NFSUNLOCKMNT(nmp); 1402 return (EFBIG); 1403 } 1404 rsize = nmp->nm_rsize; 1405 NFSUNLOCKMNT(nmp); 1406 nd->nd_mrep = NULL; 1407 while (tsiz > 0) { 1408 *attrflagp = 0; 1409 len = (tsiz > rsize) ? rsize : tsiz; 1410 NFSCL_REQSTART(nd, NFSPROC_READ, vp); 1411 if (nd->nd_flag & ND_NFSV4) 1412 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID); 1413 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED * 3); 1414 if (nd->nd_flag & ND_NFSV2) { 1415 *tl++ = txdr_unsigned(uiop->uio_offset); 1416 *tl++ = txdr_unsigned(len); 1417 *tl = 0; 1418 } else { 1419 txdr_hyper(uiop->uio_offset, tl); 1420 *(tl + 2) = txdr_unsigned(len); 1421 } 1422 /* 1423 * Since I can't do a Getattr for NFSv4 for Write, there 1424 * doesn't seem any point in doing one here, either. 1425 * (See the comment in nfsrpc_writerpc() for more info.) 1426 */ 1427 error = nfscl_request(nd, vp, p, cred, stuff); 1428 if (error) 1429 return (error); 1430 if (nd->nd_flag & ND_NFSV3) { 1431 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 1432 } else if (!nd->nd_repstat && (nd->nd_flag & ND_NFSV2)) { 1433 error = nfsm_loadattr(nd, nap); 1434 if (!error) 1435 *attrflagp = 1; 1436 } 1437 if (nd->nd_repstat || error) { 1438 if (!error) 1439 error = nd->nd_repstat; 1440 goto nfsmout; 1441 } 1442 if (nd->nd_flag & ND_NFSV3) { 1443 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1444 eof = fxdr_unsigned(int, *(tl + 1)); 1445 } else if (nd->nd_flag & ND_NFSV4) { 1446 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 1447 eof = fxdr_unsigned(int, *tl); 1448 } 1449 NFSM_STRSIZ(retlen, len); 1450 error = nfsm_mbufuio(nd, uiop, retlen); 1451 if (error) 1452 goto nfsmout; 1453 mbuf_freem(nd->nd_mrep); 1454 nd->nd_mrep = NULL; 1455 tsiz -= retlen; 1456 if (!(nd->nd_flag & ND_NFSV2)) { 1457 if (eof || retlen == 0) 1458 tsiz = 0; 1459 } else if (retlen < len) 1460 tsiz = 0; 1461 } 1462 return (0); 1463 nfsmout: 1464 if (nd->nd_mrep != NULL) 1465 mbuf_freem(nd->nd_mrep); 1466 return (error); 1467 } 1468 1469 /* 1470 * nfs write operation 1471 * When called_from_strategy != 0, it should return EIO for an error that 1472 * indicates recovery is in progress, so that the buffer will be left 1473 * dirty and be written back to the server later. If it loops around, 1474 * the recovery thread could get stuck waiting for the buffer and recovery 1475 * will then deadlock. 1476 */ 1477 APPLESTATIC int 1478 nfsrpc_write(vnode_t vp, struct uio *uiop, int *iomode, int *must_commit, 1479 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, 1480 void *stuff, int called_from_strategy) 1481 { 1482 int error, expireret = 0, retrycnt, nostateid; 1483 u_int32_t clidrev = 0; 1484 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 1485 struct nfsnode *np = VTONFS(vp); 1486 struct ucred *newcred; 1487 struct nfsfh *nfhp = NULL; 1488 nfsv4stateid_t stateid; 1489 void *lckp; 1490 1491 *must_commit = 0; 1492 if (nmp->nm_clp != NULL) 1493 clidrev = nmp->nm_clp->nfsc_clientidrev; 1494 newcred = cred; 1495 if (NFSHASNFSV4(nmp)) { 1496 newcred = NFSNEWCRED(cred); 1497 nfhp = np->n_fhp; 1498 } 1499 retrycnt = 0; 1500 do { 1501 lckp = NULL; 1502 nostateid = 0; 1503 if (NFSHASNFSV4(nmp)) { 1504 (void)nfscl_getstateid(vp, nfhp->nfh_fh, nfhp->nfh_len, 1505 NFSV4OPEN_ACCESSWRITE, 0, newcred, p, &stateid, 1506 &lckp); 1507 if (stateid.other[0] == 0 && stateid.other[1] == 0 && 1508 stateid.other[2] == 0) { 1509 nostateid = 1; 1510 NFSCL_DEBUG(1, "stateid0 in write\n"); 1511 } 1512 } 1513 1514 /* 1515 * If there is no stateid for NFSv4, it means this is an 1516 * extraneous write after close. Basically a poorly 1517 * implemented buffer cache. Just don't do the write. 1518 */ 1519 if (nostateid) 1520 error = 0; 1521 else 1522 error = nfsrpc_writerpc(vp, uiop, iomode, must_commit, 1523 newcred, &stateid, p, nap, attrflagp, stuff); 1524 if (error == NFSERR_STALESTATEID || error == NFSERR_BADSESSION) 1525 nfscl_initiate_recovery(nmp->nm_clp); 1526 if (lckp != NULL) 1527 nfscl_lockderef(lckp); 1528 if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 1529 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 1530 error == NFSERR_OLDSTATEID || error == NFSERR_BADSESSION) { 1531 (void) nfs_catnap(PZERO, error, "nfs_write"); 1532 } else if ((error == NFSERR_EXPIRED || 1533 error == NFSERR_BADSTATEID) && clidrev != 0) { 1534 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p); 1535 } 1536 retrycnt++; 1537 } while (error == NFSERR_GRACE || error == NFSERR_DELAY || 1538 ((error == NFSERR_STALESTATEID || error == NFSERR_BADSESSION || 1539 error == NFSERR_STALEDONTRECOVER) && called_from_strategy == 0) || 1540 (error == NFSERR_OLDSTATEID && retrycnt < 20) || 1541 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) && 1542 expireret == 0 && clidrev != 0 && retrycnt < 4)); 1543 if (error != 0 && (retrycnt >= 4 || 1544 ((error == NFSERR_STALESTATEID || error == NFSERR_BADSESSION || 1545 error == NFSERR_STALEDONTRECOVER) && called_from_strategy != 0))) 1546 error = EIO; 1547 if (NFSHASNFSV4(nmp)) 1548 NFSFREECRED(newcred); 1549 return (error); 1550 } 1551 1552 /* 1553 * The actual write RPC. 1554 */ 1555 static int 1556 nfsrpc_writerpc(vnode_t vp, struct uio *uiop, int *iomode, 1557 int *must_commit, struct ucred *cred, nfsv4stateid_t *stateidp, 1558 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff) 1559 { 1560 u_int32_t *tl; 1561 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 1562 struct nfsnode *np = VTONFS(vp); 1563 int error = 0, len, tsiz, rlen, commit, committed = NFSWRITE_FILESYNC; 1564 int wccflag = 0, wsize; 1565 int32_t backup; 1566 struct nfsrv_descript nfsd; 1567 struct nfsrv_descript *nd = &nfsd; 1568 nfsattrbit_t attrbits; 1569 off_t tmp_off; 1570 1571 KASSERT(uiop->uio_iovcnt == 1, ("nfs: writerpc iovcnt > 1")); 1572 *attrflagp = 0; 1573 tsiz = uio_uio_resid(uiop); 1574 tmp_off = uiop->uio_offset + tsiz; 1575 NFSLOCKMNT(nmp); 1576 if (tmp_off > nmp->nm_maxfilesize || tmp_off < uiop->uio_offset) { 1577 NFSUNLOCKMNT(nmp); 1578 return (EFBIG); 1579 } 1580 wsize = nmp->nm_wsize; 1581 NFSUNLOCKMNT(nmp); 1582 nd->nd_mrep = NULL; /* NFSv2 sometimes does a write with */ 1583 nd->nd_repstat = 0; /* uio_resid == 0, so the while is not done */ 1584 while (tsiz > 0) { 1585 *attrflagp = 0; 1586 len = (tsiz > wsize) ? wsize : tsiz; 1587 NFSCL_REQSTART(nd, NFSPROC_WRITE, vp); 1588 if (nd->nd_flag & ND_NFSV4) { 1589 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID); 1590 NFSM_BUILD(tl, u_int32_t *, NFSX_HYPER+2*NFSX_UNSIGNED); 1591 txdr_hyper(uiop->uio_offset, tl); 1592 tl += 2; 1593 *tl++ = txdr_unsigned(*iomode); 1594 *tl = txdr_unsigned(len); 1595 } else if (nd->nd_flag & ND_NFSV3) { 1596 NFSM_BUILD(tl, u_int32_t *, NFSX_HYPER+3*NFSX_UNSIGNED); 1597 txdr_hyper(uiop->uio_offset, tl); 1598 tl += 2; 1599 *tl++ = txdr_unsigned(len); 1600 *tl++ = txdr_unsigned(*iomode); 1601 *tl = txdr_unsigned(len); 1602 } else { 1603 u_int32_t x; 1604 1605 NFSM_BUILD(tl, u_int32_t *, 4 * NFSX_UNSIGNED); 1606 /* 1607 * Not sure why someone changed this, since the 1608 * RFC clearly states that "beginoffset" and 1609 * "totalcount" are ignored, but it wouldn't 1610 * surprise me if there's a busted server out there. 1611 */ 1612 /* Set both "begin" and "current" to non-garbage. */ 1613 x = txdr_unsigned((u_int32_t)uiop->uio_offset); 1614 *tl++ = x; /* "begin offset" */ 1615 *tl++ = x; /* "current offset" */ 1616 x = txdr_unsigned(len); 1617 *tl++ = x; /* total to this offset */ 1618 *tl = x; /* size of this write */ 1619 1620 } 1621 nfsm_uiombuf(nd, uiop, len); 1622 /* 1623 * Although it is tempting to do a normal Getattr Op in the 1624 * NFSv4 compound, the result can be a nearly hung client 1625 * system if the Getattr asks for Owner and/or OwnerGroup. 1626 * It occurs when the client can't map either the Owner or 1627 * Owner_group name in the Getattr reply to a uid/gid. When 1628 * there is a cache miss, the kernel does an upcall to the 1629 * nfsuserd. Then, it can try and read the local /etc/passwd 1630 * or /etc/group file. It can then block in getnewbuf(), 1631 * waiting for dirty writes to be pushed to the NFS server. 1632 * The only reason this doesn't result in a complete 1633 * deadlock, is that the upcall times out and allows 1634 * the write to complete. However, progress is so slow 1635 * that it might just as well be deadlocked. 1636 * As such, we get the rest of the attributes, but not 1637 * Owner or Owner_group. 1638 * nb: nfscl_loadattrcache() needs to be told that these 1639 * partial attributes from a write rpc are being 1640 * passed in, via a argument flag. 1641 */ 1642 if (nd->nd_flag & ND_NFSV4) { 1643 NFSWRITEGETATTR_ATTRBIT(&attrbits); 1644 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1645 *tl = txdr_unsigned(NFSV4OP_GETATTR); 1646 (void) nfsrv_putattrbit(nd, &attrbits); 1647 } 1648 error = nfscl_request(nd, vp, p, cred, stuff); 1649 if (error) 1650 return (error); 1651 if (nd->nd_repstat) { 1652 /* 1653 * In case the rpc gets retried, roll 1654 * the uio fileds changed by nfsm_uiombuf() 1655 * back. 1656 */ 1657 uiop->uio_offset -= len; 1658 uio_uio_resid_add(uiop, len); 1659 uio_iov_base_add(uiop, -len); 1660 uio_iov_len_add(uiop, len); 1661 } 1662 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) { 1663 error = nfscl_wcc_data(nd, vp, nap, attrflagp, 1664 &wccflag, stuff); 1665 if (error) 1666 goto nfsmout; 1667 } 1668 if (!nd->nd_repstat) { 1669 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) { 1670 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED 1671 + NFSX_VERF); 1672 rlen = fxdr_unsigned(int, *tl++); 1673 if (rlen == 0) { 1674 error = NFSERR_IO; 1675 goto nfsmout; 1676 } else if (rlen < len) { 1677 backup = len - rlen; 1678 uio_iov_base_add(uiop, -(backup)); 1679 uio_iov_len_add(uiop, backup); 1680 uiop->uio_offset -= backup; 1681 uio_uio_resid_add(uiop, backup); 1682 len = rlen; 1683 } 1684 commit = fxdr_unsigned(int, *tl++); 1685 1686 /* 1687 * Return the lowest committment level 1688 * obtained by any of the RPCs. 1689 */ 1690 if (committed == NFSWRITE_FILESYNC) 1691 committed = commit; 1692 else if (committed == NFSWRITE_DATASYNC && 1693 commit == NFSWRITE_UNSTABLE) 1694 committed = commit; 1695 NFSLOCKMNT(nmp); 1696 if (!NFSHASWRITEVERF(nmp)) { 1697 NFSBCOPY((caddr_t)tl, 1698 (caddr_t)&nmp->nm_verf[0], 1699 NFSX_VERF); 1700 NFSSETWRITEVERF(nmp); 1701 } else if (NFSBCMP(tl, nmp->nm_verf, 1702 NFSX_VERF)) { 1703 *must_commit = 1; 1704 NFSBCOPY(tl, nmp->nm_verf, NFSX_VERF); 1705 } 1706 NFSUNLOCKMNT(nmp); 1707 } 1708 if (nd->nd_flag & ND_NFSV4) 1709 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1710 if (nd->nd_flag & (ND_NFSV2 | ND_NFSV4)) { 1711 error = nfsm_loadattr(nd, nap); 1712 if (!error) 1713 *attrflagp = NFS_LATTR_NOSHRINK; 1714 } 1715 } else { 1716 error = nd->nd_repstat; 1717 } 1718 if (error) 1719 goto nfsmout; 1720 NFSWRITERPC_SETTIME(wccflag, np, (nd->nd_flag & ND_NFSV4)); 1721 mbuf_freem(nd->nd_mrep); 1722 nd->nd_mrep = NULL; 1723 tsiz -= len; 1724 } 1725 nfsmout: 1726 if (nd->nd_mrep != NULL) 1727 mbuf_freem(nd->nd_mrep); 1728 *iomode = committed; 1729 if (nd->nd_repstat && !error) 1730 error = nd->nd_repstat; 1731 return (error); 1732 } 1733 1734 /* 1735 * nfs mknod rpc 1736 * For NFS v2 this is a kludge. Use a create rpc but with the IFMT bits of the 1737 * mode set to specify the file type and the size field for rdev. 1738 */ 1739 APPLESTATIC int 1740 nfsrpc_mknod(vnode_t dvp, char *name, int namelen, struct vattr *vap, 1741 u_int32_t rdev, enum vtype vtyp, struct ucred *cred, NFSPROC_T *p, 1742 struct nfsvattr *dnap, struct nfsvattr *nnap, struct nfsfh **nfhpp, 1743 int *attrflagp, int *dattrflagp, void *dstuff) 1744 { 1745 u_int32_t *tl; 1746 int error = 0; 1747 struct nfsrv_descript nfsd, *nd = &nfsd; 1748 nfsattrbit_t attrbits; 1749 1750 *nfhpp = NULL; 1751 *attrflagp = 0; 1752 *dattrflagp = 0; 1753 if (namelen > NFS_MAXNAMLEN) 1754 return (ENAMETOOLONG); 1755 NFSCL_REQSTART(nd, NFSPROC_MKNOD, dvp); 1756 if (nd->nd_flag & ND_NFSV4) { 1757 if (vtyp == VBLK || vtyp == VCHR) { 1758 NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 1759 *tl++ = vtonfsv34_type(vtyp); 1760 *tl++ = txdr_unsigned(NFSMAJOR(rdev)); 1761 *tl = txdr_unsigned(NFSMINOR(rdev)); 1762 } else { 1763 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1764 *tl = vtonfsv34_type(vtyp); 1765 } 1766 } 1767 (void) nfsm_strtom(nd, name, namelen); 1768 if (nd->nd_flag & ND_NFSV3) { 1769 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1770 *tl = vtonfsv34_type(vtyp); 1771 } 1772 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) 1773 nfscl_fillsattr(nd, vap, dvp, 0, 0); 1774 if ((nd->nd_flag & ND_NFSV3) && 1775 (vtyp == VCHR || vtyp == VBLK)) { 1776 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1777 *tl++ = txdr_unsigned(NFSMAJOR(rdev)); 1778 *tl = txdr_unsigned(NFSMINOR(rdev)); 1779 } 1780 if (nd->nd_flag & ND_NFSV4) { 1781 NFSGETATTR_ATTRBIT(&attrbits); 1782 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1783 *tl++ = txdr_unsigned(NFSV4OP_GETFH); 1784 *tl = txdr_unsigned(NFSV4OP_GETATTR); 1785 (void) nfsrv_putattrbit(nd, &attrbits); 1786 } 1787 if (nd->nd_flag & ND_NFSV2) 1788 nfscl_fillsattr(nd, vap, dvp, NFSSATTR_SIZERDEV, rdev); 1789 error = nfscl_request(nd, dvp, p, cred, dstuff); 1790 if (error) 1791 return (error); 1792 if (nd->nd_flag & ND_NFSV4) 1793 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 1794 if (!nd->nd_repstat) { 1795 if (nd->nd_flag & ND_NFSV4) { 1796 NFSM_DISSECT(tl, u_int32_t *, 5 * NFSX_UNSIGNED); 1797 error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL); 1798 if (error) 1799 goto nfsmout; 1800 } 1801 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp); 1802 if (error) 1803 goto nfsmout; 1804 } 1805 if (nd->nd_flag & ND_NFSV3) 1806 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 1807 if (!error && nd->nd_repstat) 1808 error = nd->nd_repstat; 1809 nfsmout: 1810 mbuf_freem(nd->nd_mrep); 1811 return (error); 1812 } 1813 1814 /* 1815 * nfs file create call 1816 * Mostly just call the approriate routine. (I separated out v4, so that 1817 * error recovery wouldn't be as difficult.) 1818 */ 1819 APPLESTATIC int 1820 nfsrpc_create(vnode_t dvp, char *name, int namelen, struct vattr *vap, 1821 nfsquad_t cverf, int fmode, struct ucred *cred, NFSPROC_T *p, 1822 struct nfsvattr *dnap, struct nfsvattr *nnap, struct nfsfh **nfhpp, 1823 int *attrflagp, int *dattrflagp, void *dstuff) 1824 { 1825 int error = 0, newone, expireret = 0, retrycnt, unlocked; 1826 struct nfsclowner *owp; 1827 struct nfscldeleg *dp; 1828 struct nfsmount *nmp = VFSTONFS(vnode_mount(dvp)); 1829 u_int32_t clidrev; 1830 1831 if (NFSHASNFSV4(nmp)) { 1832 retrycnt = 0; 1833 do { 1834 dp = NULL; 1835 error = nfscl_open(dvp, NULL, 0, (NFSV4OPEN_ACCESSWRITE | 1836 NFSV4OPEN_ACCESSREAD), 0, cred, p, &owp, NULL, &newone, 1837 NULL, 1); 1838 if (error) 1839 return (error); 1840 if (nmp->nm_clp != NULL) 1841 clidrev = nmp->nm_clp->nfsc_clientidrev; 1842 else 1843 clidrev = 0; 1844 error = nfsrpc_createv4(dvp, name, namelen, vap, cverf, fmode, 1845 owp, &dp, cred, p, dnap, nnap, nfhpp, attrflagp, dattrflagp, 1846 dstuff, &unlocked); 1847 /* 1848 * There is no need to invalidate cached attributes here, 1849 * since new post-delegation issue attributes are always 1850 * returned by nfsrpc_createv4() and these will update the 1851 * attribute cache. 1852 */ 1853 if (dp != NULL) 1854 (void) nfscl_deleg(nmp->nm_mountp, owp->nfsow_clp, 1855 (*nfhpp)->nfh_fh, (*nfhpp)->nfh_len, cred, p, &dp); 1856 nfscl_ownerrelease(owp, error, newone, unlocked); 1857 if (error == NFSERR_GRACE || error == NFSERR_STALECLIENTID || 1858 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 1859 error == NFSERR_BADSESSION) { 1860 (void) nfs_catnap(PZERO, error, "nfs_open"); 1861 } else if ((error == NFSERR_EXPIRED || 1862 error == NFSERR_BADSTATEID) && clidrev != 0) { 1863 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p); 1864 retrycnt++; 1865 } 1866 } while (error == NFSERR_GRACE || error == NFSERR_STALECLIENTID || 1867 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 1868 error == NFSERR_BADSESSION || 1869 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) && 1870 expireret == 0 && clidrev != 0 && retrycnt < 4)); 1871 if (error && retrycnt >= 4) 1872 error = EIO; 1873 } else { 1874 error = nfsrpc_createv23(dvp, name, namelen, vap, cverf, 1875 fmode, cred, p, dnap, nnap, nfhpp, attrflagp, dattrflagp, 1876 dstuff); 1877 } 1878 return (error); 1879 } 1880 1881 /* 1882 * The create rpc for v2 and 3. 1883 */ 1884 static int 1885 nfsrpc_createv23(vnode_t dvp, char *name, int namelen, struct vattr *vap, 1886 nfsquad_t cverf, int fmode, struct ucred *cred, NFSPROC_T *p, 1887 struct nfsvattr *dnap, struct nfsvattr *nnap, struct nfsfh **nfhpp, 1888 int *attrflagp, int *dattrflagp, void *dstuff) 1889 { 1890 u_int32_t *tl; 1891 int error = 0; 1892 struct nfsrv_descript nfsd, *nd = &nfsd; 1893 1894 *nfhpp = NULL; 1895 *attrflagp = 0; 1896 *dattrflagp = 0; 1897 if (namelen > NFS_MAXNAMLEN) 1898 return (ENAMETOOLONG); 1899 NFSCL_REQSTART(nd, NFSPROC_CREATE, dvp); 1900 (void) nfsm_strtom(nd, name, namelen); 1901 if (nd->nd_flag & ND_NFSV3) { 1902 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1903 if (fmode & O_EXCL) { 1904 *tl = txdr_unsigned(NFSCREATE_EXCLUSIVE); 1905 NFSM_BUILD(tl, u_int32_t *, NFSX_VERF); 1906 *tl++ = cverf.lval[0]; 1907 *tl = cverf.lval[1]; 1908 } else { 1909 *tl = txdr_unsigned(NFSCREATE_UNCHECKED); 1910 nfscl_fillsattr(nd, vap, dvp, 0, 0); 1911 } 1912 } else { 1913 nfscl_fillsattr(nd, vap, dvp, NFSSATTR_SIZE0, 0); 1914 } 1915 error = nfscl_request(nd, dvp, p, cred, dstuff); 1916 if (error) 1917 return (error); 1918 if (nd->nd_repstat == 0) { 1919 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp); 1920 if (error) 1921 goto nfsmout; 1922 } 1923 if (nd->nd_flag & ND_NFSV3) 1924 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 1925 if (nd->nd_repstat != 0 && error == 0) 1926 error = nd->nd_repstat; 1927 nfsmout: 1928 mbuf_freem(nd->nd_mrep); 1929 return (error); 1930 } 1931 1932 static int 1933 nfsrpc_createv4(vnode_t dvp, char *name, int namelen, struct vattr *vap, 1934 nfsquad_t cverf, int fmode, struct nfsclowner *owp, struct nfscldeleg **dpp, 1935 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap, 1936 struct nfsvattr *nnap, struct nfsfh **nfhpp, int *attrflagp, 1937 int *dattrflagp, void *dstuff, int *unlockedp) 1938 { 1939 u_int32_t *tl; 1940 int error = 0, deleg, newone, ret, acesize, limitby; 1941 struct nfsrv_descript nfsd, *nd = &nfsd; 1942 struct nfsclopen *op; 1943 struct nfscldeleg *dp = NULL; 1944 struct nfsnode *np; 1945 struct nfsfh *nfhp; 1946 nfsattrbit_t attrbits; 1947 nfsv4stateid_t stateid; 1948 u_int32_t rflags; 1949 struct nfsmount *nmp; 1950 1951 nmp = VFSTONFS(dvp->v_mount); 1952 *unlockedp = 0; 1953 *nfhpp = NULL; 1954 *dpp = NULL; 1955 *attrflagp = 0; 1956 *dattrflagp = 0; 1957 if (namelen > NFS_MAXNAMLEN) 1958 return (ENAMETOOLONG); 1959 NFSCL_REQSTART(nd, NFSPROC_CREATE, dvp); 1960 /* 1961 * For V4, this is actually an Open op. 1962 */ 1963 NFSM_BUILD(tl, u_int32_t *, 5 * NFSX_UNSIGNED); 1964 *tl++ = txdr_unsigned(owp->nfsow_seqid); 1965 *tl++ = txdr_unsigned(NFSV4OPEN_ACCESSWRITE | 1966 NFSV4OPEN_ACCESSREAD); 1967 *tl++ = txdr_unsigned(NFSV4OPEN_DENYNONE); 1968 *tl++ = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[0]; 1969 *tl = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[1]; 1970 (void) nfsm_strtom(nd, owp->nfsow_owner, NFSV4CL_LOCKNAMELEN); 1971 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1972 *tl++ = txdr_unsigned(NFSV4OPEN_CREATE); 1973 if (fmode & O_EXCL) { 1974 if (NFSHASNFSV4N(nmp)) { 1975 if (NFSHASSESSPERSIST(nmp)) { 1976 /* Use GUARDED for persistent sessions. */ 1977 *tl = txdr_unsigned(NFSCREATE_GUARDED); 1978 nfscl_fillsattr(nd, vap, dvp, 0, 0); 1979 } else { 1980 /* Otherwise, use EXCLUSIVE4_1. */ 1981 *tl = txdr_unsigned(NFSCREATE_EXCLUSIVE41); 1982 NFSM_BUILD(tl, u_int32_t *, NFSX_VERF); 1983 *tl++ = cverf.lval[0]; 1984 *tl = cverf.lval[1]; 1985 nfscl_fillsattr(nd, vap, dvp, 0, 0); 1986 } 1987 } else { 1988 /* NFSv4.0 */ 1989 *tl = txdr_unsigned(NFSCREATE_EXCLUSIVE); 1990 NFSM_BUILD(tl, u_int32_t *, NFSX_VERF); 1991 *tl++ = cverf.lval[0]; 1992 *tl = cverf.lval[1]; 1993 } 1994 } else { 1995 *tl = txdr_unsigned(NFSCREATE_UNCHECKED); 1996 nfscl_fillsattr(nd, vap, dvp, 0, 0); 1997 } 1998 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1999 *tl = txdr_unsigned(NFSV4OPEN_CLAIMNULL); 2000 (void) nfsm_strtom(nd, name, namelen); 2001 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2002 *tl++ = txdr_unsigned(NFSV4OP_GETFH); 2003 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2004 NFSGETATTR_ATTRBIT(&attrbits); 2005 (void) nfsrv_putattrbit(nd, &attrbits); 2006 error = nfscl_request(nd, dvp, p, cred, dstuff); 2007 if (error) 2008 return (error); 2009 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 2010 if (error) 2011 goto nfsmout; 2012 NFSCL_INCRSEQID(owp->nfsow_seqid, nd); 2013 if (nd->nd_repstat == 0) { 2014 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID + 2015 6 * NFSX_UNSIGNED); 2016 stateid.seqid = *tl++; 2017 stateid.other[0] = *tl++; 2018 stateid.other[1] = *tl++; 2019 stateid.other[2] = *tl; 2020 rflags = fxdr_unsigned(u_int32_t, *(tl + 6)); 2021 (void) nfsrv_getattrbits(nd, &attrbits, NULL, NULL); 2022 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2023 deleg = fxdr_unsigned(int, *tl); 2024 if (deleg == NFSV4OPEN_DELEGATEREAD || 2025 deleg == NFSV4OPEN_DELEGATEWRITE) { 2026 if (!(owp->nfsow_clp->nfsc_flags & 2027 NFSCLFLAGS_FIRSTDELEG)) 2028 owp->nfsow_clp->nfsc_flags |= 2029 (NFSCLFLAGS_FIRSTDELEG | NFSCLFLAGS_GOTDELEG); 2030 MALLOC(dp, struct nfscldeleg *, 2031 sizeof (struct nfscldeleg) + NFSX_V4FHMAX, 2032 M_NFSCLDELEG, M_WAITOK); 2033 LIST_INIT(&dp->nfsdl_owner); 2034 LIST_INIT(&dp->nfsdl_lock); 2035 dp->nfsdl_clp = owp->nfsow_clp; 2036 newnfs_copyincred(cred, &dp->nfsdl_cred); 2037 nfscl_lockinit(&dp->nfsdl_rwlock); 2038 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID + 2039 NFSX_UNSIGNED); 2040 dp->nfsdl_stateid.seqid = *tl++; 2041 dp->nfsdl_stateid.other[0] = *tl++; 2042 dp->nfsdl_stateid.other[1] = *tl++; 2043 dp->nfsdl_stateid.other[2] = *tl++; 2044 ret = fxdr_unsigned(int, *tl); 2045 if (deleg == NFSV4OPEN_DELEGATEWRITE) { 2046 dp->nfsdl_flags = NFSCLDL_WRITE; 2047 /* 2048 * Indicates how much the file can grow. 2049 */ 2050 NFSM_DISSECT(tl, u_int32_t *, 2051 3 * NFSX_UNSIGNED); 2052 limitby = fxdr_unsigned(int, *tl++); 2053 switch (limitby) { 2054 case NFSV4OPEN_LIMITSIZE: 2055 dp->nfsdl_sizelimit = fxdr_hyper(tl); 2056 break; 2057 case NFSV4OPEN_LIMITBLOCKS: 2058 dp->nfsdl_sizelimit = 2059 fxdr_unsigned(u_int64_t, *tl++); 2060 dp->nfsdl_sizelimit *= 2061 fxdr_unsigned(u_int64_t, *tl); 2062 break; 2063 default: 2064 error = NFSERR_BADXDR; 2065 goto nfsmout; 2066 }; 2067 } else { 2068 dp->nfsdl_flags = NFSCLDL_READ; 2069 } 2070 if (ret) 2071 dp->nfsdl_flags |= NFSCLDL_RECALL; 2072 error = nfsrv_dissectace(nd, &dp->nfsdl_ace, &ret, 2073 &acesize, p); 2074 if (error) 2075 goto nfsmout; 2076 } else if (deleg != NFSV4OPEN_DELEGATENONE) { 2077 error = NFSERR_BADXDR; 2078 goto nfsmout; 2079 } 2080 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp); 2081 if (error) 2082 goto nfsmout; 2083 if (dp != NULL && *attrflagp) { 2084 dp->nfsdl_change = nnap->na_filerev; 2085 dp->nfsdl_modtime = nnap->na_mtime; 2086 dp->nfsdl_flags |= NFSCLDL_MODTIMESET; 2087 } 2088 /* 2089 * We can now complete the Open state. 2090 */ 2091 nfhp = *nfhpp; 2092 if (dp != NULL) { 2093 dp->nfsdl_fhlen = nfhp->nfh_len; 2094 NFSBCOPY(nfhp->nfh_fh, dp->nfsdl_fh, nfhp->nfh_len); 2095 } 2096 /* 2097 * Get an Open structure that will be 2098 * attached to the OpenOwner, acquired already. 2099 */ 2100 error = nfscl_open(dvp, nfhp->nfh_fh, nfhp->nfh_len, 2101 (NFSV4OPEN_ACCESSWRITE | NFSV4OPEN_ACCESSREAD), 0, 2102 cred, p, NULL, &op, &newone, NULL, 0); 2103 if (error) 2104 goto nfsmout; 2105 op->nfso_stateid = stateid; 2106 newnfs_copyincred(cred, &op->nfso_cred); 2107 if ((rflags & NFSV4OPEN_RESULTCONFIRM)) { 2108 do { 2109 ret = nfsrpc_openconfirm(dvp, nfhp->nfh_fh, 2110 nfhp->nfh_len, op, cred, p); 2111 if (ret == NFSERR_DELAY) 2112 (void) nfs_catnap(PZERO, ret, "nfs_create"); 2113 } while (ret == NFSERR_DELAY); 2114 error = ret; 2115 } 2116 2117 /* 2118 * If the server is handing out delegations, but we didn't 2119 * get one because an OpenConfirm was required, try the 2120 * Open again, to get a delegation. This is a harmless no-op, 2121 * from a server's point of view. 2122 */ 2123 if ((rflags & NFSV4OPEN_RESULTCONFIRM) && 2124 (owp->nfsow_clp->nfsc_flags & NFSCLFLAGS_GOTDELEG) && 2125 !error && dp == NULL) { 2126 np = VTONFS(dvp); 2127 do { 2128 ret = nfsrpc_openrpc(VFSTONFS(vnode_mount(dvp)), dvp, 2129 np->n_fhp->nfh_fh, np->n_fhp->nfh_len, 2130 nfhp->nfh_fh, nfhp->nfh_len, 2131 (NFSV4OPEN_ACCESSWRITE | NFSV4OPEN_ACCESSREAD), op, 2132 name, namelen, &dp, 0, 0x0, cred, p, 0, 1); 2133 if (ret == NFSERR_DELAY) 2134 (void) nfs_catnap(PZERO, ret, "nfs_crt2"); 2135 } while (ret == NFSERR_DELAY); 2136 if (ret) { 2137 if (dp != NULL) 2138 FREE((caddr_t)dp, M_NFSCLDELEG); 2139 if (ret == NFSERR_STALECLIENTID || 2140 ret == NFSERR_STALEDONTRECOVER || 2141 ret == NFSERR_BADSESSION) 2142 error = ret; 2143 } 2144 } 2145 nfscl_openrelease(op, error, newone); 2146 *unlockedp = 1; 2147 } 2148 if (nd->nd_repstat != 0 && error == 0) 2149 error = nd->nd_repstat; 2150 if (error == NFSERR_STALECLIENTID || error == NFSERR_BADSESSION) 2151 nfscl_initiate_recovery(owp->nfsow_clp); 2152 nfsmout: 2153 if (!error) 2154 *dpp = dp; 2155 else if (dp != NULL) 2156 FREE((caddr_t)dp, M_NFSCLDELEG); 2157 mbuf_freem(nd->nd_mrep); 2158 return (error); 2159 } 2160 2161 /* 2162 * Nfs remove rpc 2163 */ 2164 APPLESTATIC int 2165 nfsrpc_remove(vnode_t dvp, char *name, int namelen, vnode_t vp, 2166 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap, int *dattrflagp, 2167 void *dstuff) 2168 { 2169 u_int32_t *tl; 2170 struct nfsrv_descript nfsd, *nd = &nfsd; 2171 struct nfsnode *np; 2172 struct nfsmount *nmp; 2173 nfsv4stateid_t dstateid; 2174 int error, ret = 0, i; 2175 2176 *dattrflagp = 0; 2177 if (namelen > NFS_MAXNAMLEN) 2178 return (ENAMETOOLONG); 2179 nmp = VFSTONFS(vnode_mount(dvp)); 2180 tryagain: 2181 if (NFSHASNFSV4(nmp) && ret == 0) { 2182 ret = nfscl_removedeleg(vp, p, &dstateid); 2183 if (ret == 1) { 2184 NFSCL_REQSTART(nd, NFSPROC_RETDELEGREMOVE, vp); 2185 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID + 2186 NFSX_UNSIGNED); 2187 if (NFSHASNFSV4N(nmp)) 2188 *tl++ = 0; 2189 else 2190 *tl++ = dstateid.seqid; 2191 *tl++ = dstateid.other[0]; 2192 *tl++ = dstateid.other[1]; 2193 *tl++ = dstateid.other[2]; 2194 *tl = txdr_unsigned(NFSV4OP_PUTFH); 2195 np = VTONFS(dvp); 2196 (void) nfsm_fhtom(nd, np->n_fhp->nfh_fh, 2197 np->n_fhp->nfh_len, 0); 2198 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2199 *tl = txdr_unsigned(NFSV4OP_REMOVE); 2200 } 2201 } else { 2202 ret = 0; 2203 } 2204 if (ret == 0) 2205 NFSCL_REQSTART(nd, NFSPROC_REMOVE, dvp); 2206 (void) nfsm_strtom(nd, name, namelen); 2207 error = nfscl_request(nd, dvp, p, cred, dstuff); 2208 if (error) 2209 return (error); 2210 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) { 2211 /* For NFSv4, parse out any Delereturn replies. */ 2212 if (ret > 0 && nd->nd_repstat != 0 && 2213 (nd->nd_flag & ND_NOMOREDATA)) { 2214 /* 2215 * If the Delegreturn failed, try again without 2216 * it. The server will Recall, as required. 2217 */ 2218 mbuf_freem(nd->nd_mrep); 2219 goto tryagain; 2220 } 2221 for (i = 0; i < (ret * 2); i++) { 2222 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == 2223 ND_NFSV4) { 2224 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2225 if (*(tl + 1)) 2226 nd->nd_flag |= ND_NOMOREDATA; 2227 } 2228 } 2229 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 2230 } 2231 if (nd->nd_repstat && !error) 2232 error = nd->nd_repstat; 2233 nfsmout: 2234 mbuf_freem(nd->nd_mrep); 2235 return (error); 2236 } 2237 2238 /* 2239 * Do an nfs rename rpc. 2240 */ 2241 APPLESTATIC int 2242 nfsrpc_rename(vnode_t fdvp, vnode_t fvp, char *fnameptr, int fnamelen, 2243 vnode_t tdvp, vnode_t tvp, char *tnameptr, int tnamelen, struct ucred *cred, 2244 NFSPROC_T *p, struct nfsvattr *fnap, struct nfsvattr *tnap, 2245 int *fattrflagp, int *tattrflagp, void *fstuff, void *tstuff) 2246 { 2247 u_int32_t *tl; 2248 struct nfsrv_descript nfsd, *nd = &nfsd; 2249 struct nfsmount *nmp; 2250 struct nfsnode *np; 2251 nfsattrbit_t attrbits; 2252 nfsv4stateid_t fdstateid, tdstateid; 2253 int error = 0, ret = 0, gottd = 0, gotfd = 0, i; 2254 2255 *fattrflagp = 0; 2256 *tattrflagp = 0; 2257 nmp = VFSTONFS(vnode_mount(fdvp)); 2258 if (fnamelen > NFS_MAXNAMLEN || tnamelen > NFS_MAXNAMLEN) 2259 return (ENAMETOOLONG); 2260 tryagain: 2261 if (NFSHASNFSV4(nmp) && ret == 0) { 2262 ret = nfscl_renamedeleg(fvp, &fdstateid, &gotfd, tvp, 2263 &tdstateid, &gottd, p); 2264 if (gotfd && gottd) { 2265 NFSCL_REQSTART(nd, NFSPROC_RETDELEGRENAME2, fvp); 2266 } else if (gotfd) { 2267 NFSCL_REQSTART(nd, NFSPROC_RETDELEGRENAME1, fvp); 2268 } else if (gottd) { 2269 NFSCL_REQSTART(nd, NFSPROC_RETDELEGRENAME1, tvp); 2270 } 2271 if (gotfd) { 2272 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID); 2273 if (NFSHASNFSV4N(nmp)) 2274 *tl++ = 0; 2275 else 2276 *tl++ = fdstateid.seqid; 2277 *tl++ = fdstateid.other[0]; 2278 *tl++ = fdstateid.other[1]; 2279 *tl = fdstateid.other[2]; 2280 if (gottd) { 2281 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2282 *tl = txdr_unsigned(NFSV4OP_PUTFH); 2283 np = VTONFS(tvp); 2284 (void) nfsm_fhtom(nd, np->n_fhp->nfh_fh, 2285 np->n_fhp->nfh_len, 0); 2286 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2287 *tl = txdr_unsigned(NFSV4OP_DELEGRETURN); 2288 } 2289 } 2290 if (gottd) { 2291 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID); 2292 if (NFSHASNFSV4N(nmp)) 2293 *tl++ = 0; 2294 else 2295 *tl++ = tdstateid.seqid; 2296 *tl++ = tdstateid.other[0]; 2297 *tl++ = tdstateid.other[1]; 2298 *tl = tdstateid.other[2]; 2299 } 2300 if (ret > 0) { 2301 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2302 *tl = txdr_unsigned(NFSV4OP_PUTFH); 2303 np = VTONFS(fdvp); 2304 (void) nfsm_fhtom(nd, np->n_fhp->nfh_fh, 2305 np->n_fhp->nfh_len, 0); 2306 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2307 *tl = txdr_unsigned(NFSV4OP_SAVEFH); 2308 } 2309 } else { 2310 ret = 0; 2311 } 2312 if (ret == 0) 2313 NFSCL_REQSTART(nd, NFSPROC_RENAME, fdvp); 2314 if (nd->nd_flag & ND_NFSV4) { 2315 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2316 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2317 NFSWCCATTR_ATTRBIT(&attrbits); 2318 (void) nfsrv_putattrbit(nd, &attrbits); 2319 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2320 *tl = txdr_unsigned(NFSV4OP_PUTFH); 2321 (void) nfsm_fhtom(nd, VTONFS(tdvp)->n_fhp->nfh_fh, 2322 VTONFS(tdvp)->n_fhp->nfh_len, 0); 2323 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2324 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2325 (void) nfsrv_putattrbit(nd, &attrbits); 2326 nd->nd_flag |= ND_V4WCCATTR; 2327 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2328 *tl = txdr_unsigned(NFSV4OP_RENAME); 2329 } 2330 (void) nfsm_strtom(nd, fnameptr, fnamelen); 2331 if (!(nd->nd_flag & ND_NFSV4)) 2332 (void) nfsm_fhtom(nd, VTONFS(tdvp)->n_fhp->nfh_fh, 2333 VTONFS(tdvp)->n_fhp->nfh_len, 0); 2334 (void) nfsm_strtom(nd, tnameptr, tnamelen); 2335 error = nfscl_request(nd, fdvp, p, cred, fstuff); 2336 if (error) 2337 return (error); 2338 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) { 2339 /* For NFSv4, parse out any Delereturn replies. */ 2340 if (ret > 0 && nd->nd_repstat != 0 && 2341 (nd->nd_flag & ND_NOMOREDATA)) { 2342 /* 2343 * If the Delegreturn failed, try again without 2344 * it. The server will Recall, as required. 2345 */ 2346 mbuf_freem(nd->nd_mrep); 2347 goto tryagain; 2348 } 2349 for (i = 0; i < (ret * 2); i++) { 2350 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == 2351 ND_NFSV4) { 2352 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2353 if (*(tl + 1)) { 2354 if (i == 0 && ret > 1) { 2355 /* 2356 * If the Delegreturn failed, try again 2357 * without it. The server will Recall, as 2358 * required. 2359 * If ret > 1, the first iteration of this 2360 * loop is the second DelegReturn result. 2361 */ 2362 mbuf_freem(nd->nd_mrep); 2363 goto tryagain; 2364 } else { 2365 nd->nd_flag |= ND_NOMOREDATA; 2366 } 2367 } 2368 } 2369 } 2370 /* Now, the first wcc attribute reply. */ 2371 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == ND_NFSV4) { 2372 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2373 if (*(tl + 1)) 2374 nd->nd_flag |= ND_NOMOREDATA; 2375 } 2376 error = nfscl_wcc_data(nd, fdvp, fnap, fattrflagp, NULL, 2377 fstuff); 2378 /* and the second wcc attribute reply. */ 2379 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == ND_NFSV4 && 2380 !error) { 2381 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2382 if (*(tl + 1)) 2383 nd->nd_flag |= ND_NOMOREDATA; 2384 } 2385 if (!error) 2386 error = nfscl_wcc_data(nd, tdvp, tnap, tattrflagp, 2387 NULL, tstuff); 2388 } 2389 if (nd->nd_repstat && !error) 2390 error = nd->nd_repstat; 2391 nfsmout: 2392 mbuf_freem(nd->nd_mrep); 2393 return (error); 2394 } 2395 2396 /* 2397 * nfs hard link create rpc 2398 */ 2399 APPLESTATIC int 2400 nfsrpc_link(vnode_t dvp, vnode_t vp, char *name, int namelen, 2401 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap, 2402 struct nfsvattr *nap, int *attrflagp, int *dattrflagp, void *dstuff) 2403 { 2404 u_int32_t *tl; 2405 struct nfsrv_descript nfsd, *nd = &nfsd; 2406 nfsattrbit_t attrbits; 2407 int error = 0; 2408 2409 *attrflagp = 0; 2410 *dattrflagp = 0; 2411 if (namelen > NFS_MAXNAMLEN) 2412 return (ENAMETOOLONG); 2413 NFSCL_REQSTART(nd, NFSPROC_LINK, vp); 2414 if (nd->nd_flag & ND_NFSV4) { 2415 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2416 *tl = txdr_unsigned(NFSV4OP_PUTFH); 2417 } 2418 (void) nfsm_fhtom(nd, VTONFS(dvp)->n_fhp->nfh_fh, 2419 VTONFS(dvp)->n_fhp->nfh_len, 0); 2420 if (nd->nd_flag & ND_NFSV4) { 2421 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2422 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2423 NFSWCCATTR_ATTRBIT(&attrbits); 2424 (void) nfsrv_putattrbit(nd, &attrbits); 2425 nd->nd_flag |= ND_V4WCCATTR; 2426 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2427 *tl = txdr_unsigned(NFSV4OP_LINK); 2428 } 2429 (void) nfsm_strtom(nd, name, namelen); 2430 error = nfscl_request(nd, vp, p, cred, dstuff); 2431 if (error) 2432 return (error); 2433 if (nd->nd_flag & ND_NFSV3) { 2434 error = nfscl_postop_attr(nd, nap, attrflagp, dstuff); 2435 if (!error) 2436 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, 2437 NULL, dstuff); 2438 } else if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == ND_NFSV4) { 2439 /* 2440 * First, parse out the PutFH and Getattr result. 2441 */ 2442 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2443 if (!(*(tl + 1))) 2444 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2445 if (*(tl + 1)) 2446 nd->nd_flag |= ND_NOMOREDATA; 2447 /* 2448 * Get the pre-op attributes. 2449 */ 2450 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 2451 } 2452 if (nd->nd_repstat && !error) 2453 error = nd->nd_repstat; 2454 nfsmout: 2455 mbuf_freem(nd->nd_mrep); 2456 return (error); 2457 } 2458 2459 /* 2460 * nfs symbolic link create rpc 2461 */ 2462 APPLESTATIC int 2463 nfsrpc_symlink(vnode_t dvp, char *name, int namelen, char *target, 2464 struct vattr *vap, struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap, 2465 struct nfsvattr *nnap, struct nfsfh **nfhpp, int *attrflagp, 2466 int *dattrflagp, void *dstuff) 2467 { 2468 u_int32_t *tl; 2469 struct nfsrv_descript nfsd, *nd = &nfsd; 2470 struct nfsmount *nmp; 2471 int slen, error = 0; 2472 2473 *nfhpp = NULL; 2474 *attrflagp = 0; 2475 *dattrflagp = 0; 2476 nmp = VFSTONFS(vnode_mount(dvp)); 2477 slen = strlen(target); 2478 if (slen > NFS_MAXPATHLEN || namelen > NFS_MAXNAMLEN) 2479 return (ENAMETOOLONG); 2480 NFSCL_REQSTART(nd, NFSPROC_SYMLINK, dvp); 2481 if (nd->nd_flag & ND_NFSV4) { 2482 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2483 *tl = txdr_unsigned(NFLNK); 2484 (void) nfsm_strtom(nd, target, slen); 2485 } 2486 (void) nfsm_strtom(nd, name, namelen); 2487 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) 2488 nfscl_fillsattr(nd, vap, dvp, 0, 0); 2489 if (!(nd->nd_flag & ND_NFSV4)) 2490 (void) nfsm_strtom(nd, target, slen); 2491 if (nd->nd_flag & ND_NFSV2) 2492 nfscl_fillsattr(nd, vap, dvp, NFSSATTR_SIZENEG1, 0); 2493 error = nfscl_request(nd, dvp, p, cred, dstuff); 2494 if (error) 2495 return (error); 2496 if (nd->nd_flag & ND_NFSV4) 2497 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 2498 if ((nd->nd_flag & ND_NFSV3) && !error) { 2499 if (!nd->nd_repstat) 2500 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp); 2501 if (!error) 2502 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, 2503 NULL, dstuff); 2504 } 2505 if (nd->nd_repstat && !error) 2506 error = nd->nd_repstat; 2507 mbuf_freem(nd->nd_mrep); 2508 /* 2509 * Kludge: Map EEXIST => 0 assuming that it is a reply to a retry. 2510 */ 2511 if (error == EEXIST) 2512 error = 0; 2513 return (error); 2514 } 2515 2516 /* 2517 * nfs make dir rpc 2518 */ 2519 APPLESTATIC int 2520 nfsrpc_mkdir(vnode_t dvp, char *name, int namelen, struct vattr *vap, 2521 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap, 2522 struct nfsvattr *nnap, struct nfsfh **nfhpp, int *attrflagp, 2523 int *dattrflagp, void *dstuff) 2524 { 2525 u_int32_t *tl; 2526 struct nfsrv_descript nfsd, *nd = &nfsd; 2527 nfsattrbit_t attrbits; 2528 int error = 0; 2529 2530 *nfhpp = NULL; 2531 *attrflagp = 0; 2532 *dattrflagp = 0; 2533 if (namelen > NFS_MAXNAMLEN) 2534 return (ENAMETOOLONG); 2535 NFSCL_REQSTART(nd, NFSPROC_MKDIR, dvp); 2536 if (nd->nd_flag & ND_NFSV4) { 2537 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2538 *tl = txdr_unsigned(NFDIR); 2539 } 2540 (void) nfsm_strtom(nd, name, namelen); 2541 nfscl_fillsattr(nd, vap, dvp, NFSSATTR_SIZENEG1, 0); 2542 if (nd->nd_flag & ND_NFSV4) { 2543 NFSGETATTR_ATTRBIT(&attrbits); 2544 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2545 *tl++ = txdr_unsigned(NFSV4OP_GETFH); 2546 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2547 (void) nfsrv_putattrbit(nd, &attrbits); 2548 } 2549 error = nfscl_request(nd, dvp, p, cred, dstuff); 2550 if (error) 2551 return (error); 2552 if (nd->nd_flag & ND_NFSV4) 2553 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 2554 if (!nd->nd_repstat && !error) { 2555 if (nd->nd_flag & ND_NFSV4) { 2556 NFSM_DISSECT(tl, u_int32_t *, 5 * NFSX_UNSIGNED); 2557 error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL); 2558 } 2559 if (!error) 2560 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp); 2561 } 2562 if ((nd->nd_flag & ND_NFSV3) && !error) 2563 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 2564 if (nd->nd_repstat && !error) 2565 error = nd->nd_repstat; 2566 nfsmout: 2567 mbuf_freem(nd->nd_mrep); 2568 /* 2569 * Kludge: Map EEXIST => 0 assuming that you have a reply to a retry. 2570 */ 2571 if (error == EEXIST) 2572 error = 0; 2573 return (error); 2574 } 2575 2576 /* 2577 * nfs remove directory call 2578 */ 2579 APPLESTATIC int 2580 nfsrpc_rmdir(vnode_t dvp, char *name, int namelen, struct ucred *cred, 2581 NFSPROC_T *p, struct nfsvattr *dnap, int *dattrflagp, void *dstuff) 2582 { 2583 struct nfsrv_descript nfsd, *nd = &nfsd; 2584 int error = 0; 2585 2586 *dattrflagp = 0; 2587 if (namelen > NFS_MAXNAMLEN) 2588 return (ENAMETOOLONG); 2589 NFSCL_REQSTART(nd, NFSPROC_RMDIR, dvp); 2590 (void) nfsm_strtom(nd, name, namelen); 2591 error = nfscl_request(nd, dvp, p, cred, dstuff); 2592 if (error) 2593 return (error); 2594 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) 2595 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 2596 if (nd->nd_repstat && !error) 2597 error = nd->nd_repstat; 2598 mbuf_freem(nd->nd_mrep); 2599 /* 2600 * Kludge: Map ENOENT => 0 assuming that you have a reply to a retry. 2601 */ 2602 if (error == ENOENT) 2603 error = 0; 2604 return (error); 2605 } 2606 2607 /* 2608 * Readdir rpc. 2609 * Always returns with either uio_resid unchanged, if you are at the 2610 * end of the directory, or uio_resid == 0, with all DIRBLKSIZ chunks 2611 * filled in. 2612 * I felt this would allow caching of directory blocks more easily 2613 * than returning a pertially filled block. 2614 * Directory offset cookies: 2615 * Oh my, what to do with them... 2616 * I can think of three ways to deal with them: 2617 * 1 - have the layer above these RPCs maintain a map between logical 2618 * directory byte offsets and the NFS directory offset cookies 2619 * 2 - pass the opaque directory offset cookies up into userland 2620 * and let the libc functions deal with them, via the system call 2621 * 3 - return them to userland in the "struct dirent", so future versions 2622 * of libc can use them and do whatever is necessary to amke things work 2623 * above these rpc calls, in the meantime 2624 * For now, I do #3 by "hiding" the directory offset cookies after the 2625 * d_name field in struct dirent. This is space inside d_reclen that 2626 * will be ignored by anything that doesn't know about them. 2627 * The directory offset cookies are filled in as the last 8 bytes of 2628 * each directory entry, after d_name. Someday, the userland libc 2629 * functions may be able to use these. In the meantime, it satisfies 2630 * OpenBSD's requirements for cookies being returned. 2631 * If expects the directory offset cookie for the read to be in uio_offset 2632 * and returns the one for the next entry after this directory block in 2633 * there, as well. 2634 */ 2635 APPLESTATIC int 2636 nfsrpc_readdir(vnode_t vp, struct uio *uiop, nfsuint64 *cookiep, 2637 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, 2638 int *eofp, void *stuff) 2639 { 2640 int len, left; 2641 struct dirent *dp = NULL; 2642 u_int32_t *tl; 2643 nfsquad_t cookie, ncookie; 2644 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 2645 struct nfsnode *dnp = VTONFS(vp); 2646 struct nfsvattr nfsva; 2647 struct nfsrv_descript nfsd, *nd = &nfsd; 2648 int error = 0, tlen, more_dirs = 1, blksiz = 0, bigenough = 1; 2649 int reqsize, tryformoredirs = 1, readsize, eof = 0, gotmnton = 0; 2650 long dotfileid, dotdotfileid = 0; 2651 u_int32_t fakefileno = 0xffffffff, rderr; 2652 char *cp; 2653 nfsattrbit_t attrbits, dattrbits; 2654 u_int32_t *tl2 = NULL; 2655 size_t tresid; 2656 2657 KASSERT(uiop->uio_iovcnt == 1 && 2658 (uio_uio_resid(uiop) & (DIRBLKSIZ - 1)) == 0, 2659 ("nfs readdirrpc bad uio")); 2660 2661 /* 2662 * There is no point in reading a lot more than uio_resid, however 2663 * adding one additional DIRBLKSIZ makes sense. Since uio_resid 2664 * and nm_readdirsize are both exact multiples of DIRBLKSIZ, this 2665 * will never make readsize > nm_readdirsize. 2666 */ 2667 readsize = nmp->nm_readdirsize; 2668 if (readsize > uio_uio_resid(uiop)) 2669 readsize = uio_uio_resid(uiop) + DIRBLKSIZ; 2670 2671 *attrflagp = 0; 2672 if (eofp) 2673 *eofp = 0; 2674 tresid = uio_uio_resid(uiop); 2675 cookie.lval[0] = cookiep->nfsuquad[0]; 2676 cookie.lval[1] = cookiep->nfsuquad[1]; 2677 nd->nd_mrep = NULL; 2678 2679 /* 2680 * For NFSv4, first create the "." and ".." entries. 2681 */ 2682 if (NFSHASNFSV4(nmp)) { 2683 reqsize = 6 * NFSX_UNSIGNED; 2684 NFSGETATTR_ATTRBIT(&dattrbits); 2685 NFSZERO_ATTRBIT(&attrbits); 2686 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_FILEID); 2687 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_TYPE); 2688 if (NFSISSET_ATTRBIT(&dnp->n_vattr.na_suppattr, 2689 NFSATTRBIT_MOUNTEDONFILEID)) { 2690 NFSSETBIT_ATTRBIT(&attrbits, 2691 NFSATTRBIT_MOUNTEDONFILEID); 2692 gotmnton = 1; 2693 } else { 2694 /* 2695 * Must fake it. Use the fileno, except when the 2696 * fsid is != to that of the directory. For that 2697 * case, generate a fake fileno that is not the same. 2698 */ 2699 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_FSID); 2700 gotmnton = 0; 2701 } 2702 2703 /* 2704 * Joy, oh joy. For V4 we get to hand craft '.' and '..'. 2705 */ 2706 if (uiop->uio_offset == 0) { 2707 #if defined(__FreeBSD_version) && __FreeBSD_version >= 800000 2708 error = VOP_GETATTR(vp, &nfsva.na_vattr, cred); 2709 #else 2710 error = VOP_GETATTR(vp, &nfsva.na_vattr, cred, p); 2711 #endif 2712 if (error) 2713 return (error); 2714 dotfileid = nfsva.na_fileid; 2715 NFSCL_REQSTART(nd, NFSPROC_LOOKUPP, vp); 2716 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2717 *tl++ = txdr_unsigned(NFSV4OP_GETFH); 2718 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2719 (void) nfsrv_putattrbit(nd, &attrbits); 2720 error = nfscl_request(nd, vp, p, cred, stuff); 2721 if (error) 2722 return (error); 2723 if (nd->nd_repstat == 0) { 2724 NFSM_DISSECT(tl, u_int32_t *, 3*NFSX_UNSIGNED); 2725 len = fxdr_unsigned(int, *(tl + 2)); 2726 if (len > 0 && len <= NFSX_V4FHMAX) 2727 error = nfsm_advance(nd, NFSM_RNDUP(len), -1); 2728 else 2729 error = EPERM; 2730 if (!error) { 2731 NFSM_DISSECT(tl, u_int32_t *, 2*NFSX_UNSIGNED); 2732 nfsva.na_mntonfileno = 0xffffffff; 2733 error = nfsv4_loadattr(nd, NULL, &nfsva, NULL, 2734 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0, 2735 NULL, NULL, NULL, p, cred); 2736 if (error) { 2737 dotdotfileid = dotfileid; 2738 } else if (gotmnton) { 2739 if (nfsva.na_mntonfileno != 0xffffffff) 2740 dotdotfileid = nfsva.na_mntonfileno; 2741 else 2742 dotdotfileid = nfsva.na_fileid; 2743 } else if (nfsva.na_filesid[0] == 2744 dnp->n_vattr.na_filesid[0] && 2745 nfsva.na_filesid[1] == 2746 dnp->n_vattr.na_filesid[1]) { 2747 dotdotfileid = nfsva.na_fileid; 2748 } else { 2749 do { 2750 fakefileno--; 2751 } while (fakefileno == 2752 nfsva.na_fileid); 2753 dotdotfileid = fakefileno; 2754 } 2755 } 2756 } else if (nd->nd_repstat == NFSERR_NOENT) { 2757 /* 2758 * Lookupp returns NFSERR_NOENT when we are 2759 * at the root, so just use the current dir. 2760 */ 2761 nd->nd_repstat = 0; 2762 dotdotfileid = dotfileid; 2763 } else { 2764 error = nd->nd_repstat; 2765 } 2766 mbuf_freem(nd->nd_mrep); 2767 if (error) 2768 return (error); 2769 nd->nd_mrep = NULL; 2770 dp = (struct dirent *) CAST_DOWN(caddr_t, uio_iov_base(uiop)); 2771 dp->d_type = DT_DIR; 2772 dp->d_fileno = dotfileid; 2773 dp->d_namlen = 1; 2774 dp->d_name[0] = '.'; 2775 dp->d_name[1] = '\0'; 2776 dp->d_reclen = DIRENT_SIZE(dp) + NFSX_HYPER; 2777 /* 2778 * Just make these offset cookie 0. 2779 */ 2780 tl = (u_int32_t *)&dp->d_name[4]; 2781 *tl++ = 0; 2782 *tl = 0; 2783 blksiz += dp->d_reclen; 2784 uio_uio_resid_add(uiop, -(dp->d_reclen)); 2785 uiop->uio_offset += dp->d_reclen; 2786 uio_iov_base_add(uiop, dp->d_reclen); 2787 uio_iov_len_add(uiop, -(dp->d_reclen)); 2788 dp = (struct dirent *) CAST_DOWN(caddr_t, uio_iov_base(uiop)); 2789 dp->d_type = DT_DIR; 2790 dp->d_fileno = dotdotfileid; 2791 dp->d_namlen = 2; 2792 dp->d_name[0] = '.'; 2793 dp->d_name[1] = '.'; 2794 dp->d_name[2] = '\0'; 2795 dp->d_reclen = DIRENT_SIZE(dp) + NFSX_HYPER; 2796 /* 2797 * Just make these offset cookie 0. 2798 */ 2799 tl = (u_int32_t *)&dp->d_name[4]; 2800 *tl++ = 0; 2801 *tl = 0; 2802 blksiz += dp->d_reclen; 2803 uio_uio_resid_add(uiop, -(dp->d_reclen)); 2804 uiop->uio_offset += dp->d_reclen; 2805 uio_iov_base_add(uiop, dp->d_reclen); 2806 uio_iov_len_add(uiop, -(dp->d_reclen)); 2807 } 2808 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_RDATTRERROR); 2809 } else { 2810 reqsize = 5 * NFSX_UNSIGNED; 2811 } 2812 2813 2814 /* 2815 * Loop around doing readdir rpc's of size readsize. 2816 * The stopping criteria is EOF or buffer full. 2817 */ 2818 while (more_dirs && bigenough) { 2819 *attrflagp = 0; 2820 NFSCL_REQSTART(nd, NFSPROC_READDIR, vp); 2821 if (nd->nd_flag & ND_NFSV2) { 2822 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2823 *tl++ = cookie.lval[1]; 2824 *tl = txdr_unsigned(readsize); 2825 } else { 2826 NFSM_BUILD(tl, u_int32_t *, reqsize); 2827 *tl++ = cookie.lval[0]; 2828 *tl++ = cookie.lval[1]; 2829 if (cookie.qval == 0) { 2830 *tl++ = 0; 2831 *tl++ = 0; 2832 } else { 2833 NFSLOCKNODE(dnp); 2834 *tl++ = dnp->n_cookieverf.nfsuquad[0]; 2835 *tl++ = dnp->n_cookieverf.nfsuquad[1]; 2836 NFSUNLOCKNODE(dnp); 2837 } 2838 if (nd->nd_flag & ND_NFSV4) { 2839 *tl++ = txdr_unsigned(readsize); 2840 *tl = txdr_unsigned(readsize); 2841 (void) nfsrv_putattrbit(nd, &attrbits); 2842 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2843 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2844 (void) nfsrv_putattrbit(nd, &dattrbits); 2845 } else { 2846 *tl = txdr_unsigned(readsize); 2847 } 2848 } 2849 error = nfscl_request(nd, vp, p, cred, stuff); 2850 if (error) 2851 return (error); 2852 if (!(nd->nd_flag & ND_NFSV2)) { 2853 if (nd->nd_flag & ND_NFSV3) 2854 error = nfscl_postop_attr(nd, nap, attrflagp, 2855 stuff); 2856 if (!nd->nd_repstat && !error) { 2857 NFSM_DISSECT(tl, u_int32_t *, NFSX_HYPER); 2858 NFSLOCKNODE(dnp); 2859 dnp->n_cookieverf.nfsuquad[0] = *tl++; 2860 dnp->n_cookieverf.nfsuquad[1] = *tl; 2861 NFSUNLOCKNODE(dnp); 2862 } 2863 } 2864 if (nd->nd_repstat || error) { 2865 if (!error) 2866 error = nd->nd_repstat; 2867 goto nfsmout; 2868 } 2869 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2870 more_dirs = fxdr_unsigned(int, *tl); 2871 if (!more_dirs) 2872 tryformoredirs = 0; 2873 2874 /* loop thru the dir entries, doctoring them to 4bsd form */ 2875 while (more_dirs && bigenough) { 2876 if (nd->nd_flag & ND_NFSV4) { 2877 NFSM_DISSECT(tl, u_int32_t *, 3*NFSX_UNSIGNED); 2878 ncookie.lval[0] = *tl++; 2879 ncookie.lval[1] = *tl++; 2880 len = fxdr_unsigned(int, *tl); 2881 } else if (nd->nd_flag & ND_NFSV3) { 2882 NFSM_DISSECT(tl, u_int32_t *, 3*NFSX_UNSIGNED); 2883 nfsva.na_fileid = fxdr_hyper(tl); 2884 tl += 2; 2885 len = fxdr_unsigned(int, *tl); 2886 } else { 2887 NFSM_DISSECT(tl, u_int32_t *, 2*NFSX_UNSIGNED); 2888 nfsva.na_fileid = 2889 fxdr_unsigned(long, *tl++); 2890 len = fxdr_unsigned(int, *tl); 2891 } 2892 if (len <= 0 || len > NFS_MAXNAMLEN) { 2893 error = EBADRPC; 2894 goto nfsmout; 2895 } 2896 tlen = NFSM_RNDUP(len); 2897 if (tlen == len) 2898 tlen += 4; /* To ensure null termination */ 2899 left = DIRBLKSIZ - blksiz; 2900 if ((int)(tlen + DIRHDSIZ + NFSX_HYPER) > left) { 2901 dp->d_reclen += left; 2902 uio_iov_base_add(uiop, left); 2903 uio_iov_len_add(uiop, -(left)); 2904 uio_uio_resid_add(uiop, -(left)); 2905 uiop->uio_offset += left; 2906 blksiz = 0; 2907 } 2908 if ((int)(tlen + DIRHDSIZ + NFSX_HYPER) > uio_uio_resid(uiop)) 2909 bigenough = 0; 2910 if (bigenough) { 2911 dp = (struct dirent *) CAST_DOWN(caddr_t, uio_iov_base(uiop)); 2912 dp->d_namlen = len; 2913 dp->d_reclen = tlen + DIRHDSIZ + NFSX_HYPER; 2914 dp->d_type = DT_UNKNOWN; 2915 blksiz += dp->d_reclen; 2916 if (blksiz == DIRBLKSIZ) 2917 blksiz = 0; 2918 uio_uio_resid_add(uiop, -(DIRHDSIZ)); 2919 uiop->uio_offset += DIRHDSIZ; 2920 uio_iov_base_add(uiop, DIRHDSIZ); 2921 uio_iov_len_add(uiop, -(DIRHDSIZ)); 2922 error = nfsm_mbufuio(nd, uiop, len); 2923 if (error) 2924 goto nfsmout; 2925 cp = CAST_DOWN(caddr_t, uio_iov_base(uiop)); 2926 tlen -= len; 2927 *cp = '\0'; /* null terminate */ 2928 cp += tlen; /* points to cookie storage */ 2929 tl2 = (u_int32_t *)cp; 2930 uio_iov_base_add(uiop, (tlen + NFSX_HYPER)); 2931 uio_iov_len_add(uiop, -(tlen + NFSX_HYPER)); 2932 uio_uio_resid_add(uiop, -(tlen + NFSX_HYPER)); 2933 uiop->uio_offset += (tlen + NFSX_HYPER); 2934 } else { 2935 error = nfsm_advance(nd, NFSM_RNDUP(len), -1); 2936 if (error) 2937 goto nfsmout; 2938 } 2939 if (nd->nd_flag & ND_NFSV4) { 2940 rderr = 0; 2941 nfsva.na_mntonfileno = 0xffffffff; 2942 error = nfsv4_loadattr(nd, NULL, &nfsva, NULL, 2943 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0, 2944 NULL, NULL, &rderr, p, cred); 2945 if (error) 2946 goto nfsmout; 2947 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2948 } else if (nd->nd_flag & ND_NFSV3) { 2949 NFSM_DISSECT(tl, u_int32_t *, 3*NFSX_UNSIGNED); 2950 ncookie.lval[0] = *tl++; 2951 ncookie.lval[1] = *tl++; 2952 } else { 2953 NFSM_DISSECT(tl, u_int32_t *, 2*NFSX_UNSIGNED); 2954 ncookie.lval[0] = 0; 2955 ncookie.lval[1] = *tl++; 2956 } 2957 if (bigenough) { 2958 if (nd->nd_flag & ND_NFSV4) { 2959 if (rderr) { 2960 dp->d_fileno = 0; 2961 } else { 2962 if (gotmnton) { 2963 if (nfsva.na_mntonfileno != 0xffffffff) 2964 dp->d_fileno = nfsva.na_mntonfileno; 2965 else 2966 dp->d_fileno = nfsva.na_fileid; 2967 } else if (nfsva.na_filesid[0] == 2968 dnp->n_vattr.na_filesid[0] && 2969 nfsva.na_filesid[1] == 2970 dnp->n_vattr.na_filesid[1]) { 2971 dp->d_fileno = nfsva.na_fileid; 2972 } else { 2973 do { 2974 fakefileno--; 2975 } while (fakefileno == 2976 nfsva.na_fileid); 2977 dp->d_fileno = fakefileno; 2978 } 2979 dp->d_type = vtonfs_dtype(nfsva.na_type); 2980 } 2981 } else { 2982 dp->d_fileno = nfsva.na_fileid; 2983 } 2984 *tl2++ = cookiep->nfsuquad[0] = cookie.lval[0] = 2985 ncookie.lval[0]; 2986 *tl2 = cookiep->nfsuquad[1] = cookie.lval[1] = 2987 ncookie.lval[1]; 2988 } 2989 more_dirs = fxdr_unsigned(int, *tl); 2990 } 2991 /* 2992 * If at end of rpc data, get the eof boolean 2993 */ 2994 if (!more_dirs) { 2995 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2996 eof = fxdr_unsigned(int, *tl); 2997 if (tryformoredirs) 2998 more_dirs = !eof; 2999 if (nd->nd_flag & ND_NFSV4) { 3000 error = nfscl_postop_attr(nd, nap, attrflagp, 3001 stuff); 3002 if (error) 3003 goto nfsmout; 3004 } 3005 } 3006 mbuf_freem(nd->nd_mrep); 3007 nd->nd_mrep = NULL; 3008 } 3009 /* 3010 * Fill last record, iff any, out to a multiple of DIRBLKSIZ 3011 * by increasing d_reclen for the last record. 3012 */ 3013 if (blksiz > 0) { 3014 left = DIRBLKSIZ - blksiz; 3015 dp->d_reclen += left; 3016 uio_iov_base_add(uiop, left); 3017 uio_iov_len_add(uiop, -(left)); 3018 uio_uio_resid_add(uiop, -(left)); 3019 uiop->uio_offset += left; 3020 } 3021 3022 /* 3023 * If returning no data, assume end of file. 3024 * If not bigenough, return not end of file, since you aren't 3025 * returning all the data 3026 * Otherwise, return the eof flag from the server. 3027 */ 3028 if (eofp) { 3029 if (tresid == ((size_t)(uio_uio_resid(uiop)))) 3030 *eofp = 1; 3031 else if (!bigenough) 3032 *eofp = 0; 3033 else 3034 *eofp = eof; 3035 } 3036 3037 /* 3038 * Add extra empty records to any remaining DIRBLKSIZ chunks. 3039 */ 3040 while (uio_uio_resid(uiop) > 0 && ((size_t)(uio_uio_resid(uiop))) != tresid) { 3041 dp = (struct dirent *) CAST_DOWN(caddr_t, uio_iov_base(uiop)); 3042 dp->d_type = DT_UNKNOWN; 3043 dp->d_fileno = 0; 3044 dp->d_namlen = 0; 3045 dp->d_name[0] = '\0'; 3046 tl = (u_int32_t *)&dp->d_name[4]; 3047 *tl++ = cookie.lval[0]; 3048 *tl = cookie.lval[1]; 3049 dp->d_reclen = DIRBLKSIZ; 3050 uio_iov_base_add(uiop, DIRBLKSIZ); 3051 uio_iov_len_add(uiop, -(DIRBLKSIZ)); 3052 uio_uio_resid_add(uiop, -(DIRBLKSIZ)); 3053 uiop->uio_offset += DIRBLKSIZ; 3054 } 3055 3056 nfsmout: 3057 if (nd->nd_mrep != NULL) 3058 mbuf_freem(nd->nd_mrep); 3059 return (error); 3060 } 3061 3062 #ifndef APPLE 3063 /* 3064 * NFS V3 readdir plus RPC. Used in place of nfsrpc_readdir(). 3065 * (Also used for NFS V4 when mount flag set.) 3066 * (ditto above w.r.t. multiple of DIRBLKSIZ, etc.) 3067 */ 3068 APPLESTATIC int 3069 nfsrpc_readdirplus(vnode_t vp, struct uio *uiop, nfsuint64 *cookiep, 3070 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, 3071 int *eofp, void *stuff) 3072 { 3073 int len, left; 3074 struct dirent *dp = NULL; 3075 u_int32_t *tl; 3076 vnode_t newvp = NULLVP; 3077 struct nfsrv_descript nfsd, *nd = &nfsd; 3078 struct nameidata nami, *ndp = &nami; 3079 struct componentname *cnp = &ndp->ni_cnd; 3080 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 3081 struct nfsnode *dnp = VTONFS(vp), *np; 3082 struct nfsvattr nfsva; 3083 struct nfsfh *nfhp; 3084 nfsquad_t cookie, ncookie; 3085 int error = 0, tlen, more_dirs = 1, blksiz = 0, bigenough = 1; 3086 int attrflag, tryformoredirs = 1, eof = 0, gotmnton = 0; 3087 int isdotdot = 0, unlocknewvp = 0; 3088 long dotfileid, dotdotfileid = 0, fileno = 0; 3089 char *cp; 3090 nfsattrbit_t attrbits, dattrbits; 3091 size_t tresid; 3092 u_int32_t *tl2 = NULL, fakefileno = 0xffffffff, rderr; 3093 struct timespec dctime; 3094 3095 KASSERT(uiop->uio_iovcnt == 1 && 3096 (uio_uio_resid(uiop) & (DIRBLKSIZ - 1)) == 0, 3097 ("nfs readdirplusrpc bad uio")); 3098 timespecclear(&dctime); 3099 *attrflagp = 0; 3100 if (eofp != NULL) 3101 *eofp = 0; 3102 ndp->ni_dvp = vp; 3103 nd->nd_mrep = NULL; 3104 cookie.lval[0] = cookiep->nfsuquad[0]; 3105 cookie.lval[1] = cookiep->nfsuquad[1]; 3106 tresid = uio_uio_resid(uiop); 3107 3108 /* 3109 * For NFSv4, first create the "." and ".." entries. 3110 */ 3111 if (NFSHASNFSV4(nmp)) { 3112 NFSGETATTR_ATTRBIT(&dattrbits); 3113 NFSZERO_ATTRBIT(&attrbits); 3114 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_FILEID); 3115 if (NFSISSET_ATTRBIT(&dnp->n_vattr.na_suppattr, 3116 NFSATTRBIT_MOUNTEDONFILEID)) { 3117 NFSSETBIT_ATTRBIT(&attrbits, 3118 NFSATTRBIT_MOUNTEDONFILEID); 3119 gotmnton = 1; 3120 } else { 3121 /* 3122 * Must fake it. Use the fileno, except when the 3123 * fsid is != to that of the directory. For that 3124 * case, generate a fake fileno that is not the same. 3125 */ 3126 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_FSID); 3127 gotmnton = 0; 3128 } 3129 3130 /* 3131 * Joy, oh joy. For V4 we get to hand craft '.' and '..'. 3132 */ 3133 if (uiop->uio_offset == 0) { 3134 #if defined(__FreeBSD_version) && __FreeBSD_version >= 800000 3135 error = VOP_GETATTR(vp, &nfsva.na_vattr, cred); 3136 #else 3137 error = VOP_GETATTR(vp, &nfsva.na_vattr, cred, p); 3138 #endif 3139 if (error) 3140 return (error); 3141 dctime = nfsva.na_ctime; 3142 dotfileid = nfsva.na_fileid; 3143 NFSCL_REQSTART(nd, NFSPROC_LOOKUPP, vp); 3144 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 3145 *tl++ = txdr_unsigned(NFSV4OP_GETFH); 3146 *tl = txdr_unsigned(NFSV4OP_GETATTR); 3147 (void) nfsrv_putattrbit(nd, &attrbits); 3148 error = nfscl_request(nd, vp, p, cred, stuff); 3149 if (error) 3150 return (error); 3151 if (nd->nd_repstat == 0) { 3152 NFSM_DISSECT(tl, u_int32_t *, 3*NFSX_UNSIGNED); 3153 len = fxdr_unsigned(int, *(tl + 2)); 3154 if (len > 0 && len <= NFSX_V4FHMAX) 3155 error = nfsm_advance(nd, NFSM_RNDUP(len), -1); 3156 else 3157 error = EPERM; 3158 if (!error) { 3159 NFSM_DISSECT(tl, u_int32_t *, 2*NFSX_UNSIGNED); 3160 nfsva.na_mntonfileno = 0xffffffff; 3161 error = nfsv4_loadattr(nd, NULL, &nfsva, NULL, 3162 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0, 3163 NULL, NULL, NULL, p, cred); 3164 if (error) { 3165 dotdotfileid = dotfileid; 3166 } else if (gotmnton) { 3167 if (nfsva.na_mntonfileno != 0xffffffff) 3168 dotdotfileid = nfsva.na_mntonfileno; 3169 else 3170 dotdotfileid = nfsva.na_fileid; 3171 } else if (nfsva.na_filesid[0] == 3172 dnp->n_vattr.na_filesid[0] && 3173 nfsva.na_filesid[1] == 3174 dnp->n_vattr.na_filesid[1]) { 3175 dotdotfileid = nfsva.na_fileid; 3176 } else { 3177 do { 3178 fakefileno--; 3179 } while (fakefileno == 3180 nfsva.na_fileid); 3181 dotdotfileid = fakefileno; 3182 } 3183 } 3184 } else if (nd->nd_repstat == NFSERR_NOENT) { 3185 /* 3186 * Lookupp returns NFSERR_NOENT when we are 3187 * at the root, so just use the current dir. 3188 */ 3189 nd->nd_repstat = 0; 3190 dotdotfileid = dotfileid; 3191 } else { 3192 error = nd->nd_repstat; 3193 } 3194 mbuf_freem(nd->nd_mrep); 3195 if (error) 3196 return (error); 3197 nd->nd_mrep = NULL; 3198 dp = (struct dirent *)uio_iov_base(uiop); 3199 dp->d_type = DT_DIR; 3200 dp->d_fileno = dotfileid; 3201 dp->d_namlen = 1; 3202 dp->d_name[0] = '.'; 3203 dp->d_name[1] = '\0'; 3204 dp->d_reclen = DIRENT_SIZE(dp) + NFSX_HYPER; 3205 /* 3206 * Just make these offset cookie 0. 3207 */ 3208 tl = (u_int32_t *)&dp->d_name[4]; 3209 *tl++ = 0; 3210 *tl = 0; 3211 blksiz += dp->d_reclen; 3212 uio_uio_resid_add(uiop, -(dp->d_reclen)); 3213 uiop->uio_offset += dp->d_reclen; 3214 uio_iov_base_add(uiop, dp->d_reclen); 3215 uio_iov_len_add(uiop, -(dp->d_reclen)); 3216 dp = (struct dirent *)uio_iov_base(uiop); 3217 dp->d_type = DT_DIR; 3218 dp->d_fileno = dotdotfileid; 3219 dp->d_namlen = 2; 3220 dp->d_name[0] = '.'; 3221 dp->d_name[1] = '.'; 3222 dp->d_name[2] = '\0'; 3223 dp->d_reclen = DIRENT_SIZE(dp) + NFSX_HYPER; 3224 /* 3225 * Just make these offset cookie 0. 3226 */ 3227 tl = (u_int32_t *)&dp->d_name[4]; 3228 *tl++ = 0; 3229 *tl = 0; 3230 blksiz += dp->d_reclen; 3231 uio_uio_resid_add(uiop, -(dp->d_reclen)); 3232 uiop->uio_offset += dp->d_reclen; 3233 uio_iov_base_add(uiop, dp->d_reclen); 3234 uio_iov_len_add(uiop, -(dp->d_reclen)); 3235 } 3236 NFSREADDIRPLUS_ATTRBIT(&attrbits); 3237 if (gotmnton) 3238 NFSSETBIT_ATTRBIT(&attrbits, 3239 NFSATTRBIT_MOUNTEDONFILEID); 3240 } 3241 3242 /* 3243 * Loop around doing readdir rpc's of size nm_readdirsize. 3244 * The stopping criteria is EOF or buffer full. 3245 */ 3246 while (more_dirs && bigenough) { 3247 *attrflagp = 0; 3248 NFSCL_REQSTART(nd, NFSPROC_READDIRPLUS, vp); 3249 NFSM_BUILD(tl, u_int32_t *, 6 * NFSX_UNSIGNED); 3250 *tl++ = cookie.lval[0]; 3251 *tl++ = cookie.lval[1]; 3252 if (cookie.qval == 0) { 3253 *tl++ = 0; 3254 *tl++ = 0; 3255 } else { 3256 NFSLOCKNODE(dnp); 3257 *tl++ = dnp->n_cookieverf.nfsuquad[0]; 3258 *tl++ = dnp->n_cookieverf.nfsuquad[1]; 3259 NFSUNLOCKNODE(dnp); 3260 } 3261 *tl++ = txdr_unsigned(nmp->nm_readdirsize); 3262 *tl = txdr_unsigned(nmp->nm_readdirsize); 3263 if (nd->nd_flag & ND_NFSV4) { 3264 (void) nfsrv_putattrbit(nd, &attrbits); 3265 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 3266 *tl = txdr_unsigned(NFSV4OP_GETATTR); 3267 (void) nfsrv_putattrbit(nd, &dattrbits); 3268 } 3269 error = nfscl_request(nd, vp, p, cred, stuff); 3270 if (error) 3271 return (error); 3272 if (nd->nd_flag & ND_NFSV3) 3273 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 3274 if (nd->nd_repstat || error) { 3275 if (!error) 3276 error = nd->nd_repstat; 3277 goto nfsmout; 3278 } 3279 if ((nd->nd_flag & ND_NFSV3) != 0 && *attrflagp != 0) 3280 dctime = nap->na_ctime; 3281 NFSM_DISSECT(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 3282 NFSLOCKNODE(dnp); 3283 dnp->n_cookieverf.nfsuquad[0] = *tl++; 3284 dnp->n_cookieverf.nfsuquad[1] = *tl++; 3285 NFSUNLOCKNODE(dnp); 3286 more_dirs = fxdr_unsigned(int, *tl); 3287 if (!more_dirs) 3288 tryformoredirs = 0; 3289 3290 /* loop thru the dir entries, doctoring them to 4bsd form */ 3291 while (more_dirs && bigenough) { 3292 NFSM_DISSECT(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 3293 if (nd->nd_flag & ND_NFSV4) { 3294 ncookie.lval[0] = *tl++; 3295 ncookie.lval[1] = *tl++; 3296 } else { 3297 fileno = fxdr_unsigned(long, *++tl); 3298 tl++; 3299 } 3300 len = fxdr_unsigned(int, *tl); 3301 if (len <= 0 || len > NFS_MAXNAMLEN) { 3302 error = EBADRPC; 3303 goto nfsmout; 3304 } 3305 tlen = NFSM_RNDUP(len); 3306 if (tlen == len) 3307 tlen += 4; /* To ensure null termination */ 3308 left = DIRBLKSIZ - blksiz; 3309 if ((tlen + DIRHDSIZ + NFSX_HYPER) > left) { 3310 dp->d_reclen += left; 3311 uio_iov_base_add(uiop, left); 3312 uio_iov_len_add(uiop, -(left)); 3313 uio_uio_resid_add(uiop, -(left)); 3314 uiop->uio_offset += left; 3315 blksiz = 0; 3316 } 3317 if ((tlen + DIRHDSIZ + NFSX_HYPER) > uio_uio_resid(uiop)) 3318 bigenough = 0; 3319 if (bigenough) { 3320 dp = (struct dirent *)uio_iov_base(uiop); 3321 dp->d_namlen = len; 3322 dp->d_reclen = tlen + DIRHDSIZ + NFSX_HYPER; 3323 dp->d_type = DT_UNKNOWN; 3324 blksiz += dp->d_reclen; 3325 if (blksiz == DIRBLKSIZ) 3326 blksiz = 0; 3327 uio_uio_resid_add(uiop, -(DIRHDSIZ)); 3328 uiop->uio_offset += DIRHDSIZ; 3329 uio_iov_base_add(uiop, DIRHDSIZ); 3330 uio_iov_len_add(uiop, -(DIRHDSIZ)); 3331 cnp->cn_nameptr = uio_iov_base(uiop); 3332 cnp->cn_namelen = len; 3333 NFSCNHASHZERO(cnp); 3334 error = nfsm_mbufuio(nd, uiop, len); 3335 if (error) 3336 goto nfsmout; 3337 cp = uio_iov_base(uiop); 3338 tlen -= len; 3339 *cp = '\0'; 3340 cp += tlen; /* points to cookie storage */ 3341 tl2 = (u_int32_t *)cp; 3342 if (len == 2 && cnp->cn_nameptr[0] == '.' && 3343 cnp->cn_nameptr[1] == '.') 3344 isdotdot = 1; 3345 else 3346 isdotdot = 0; 3347 uio_iov_base_add(uiop, (tlen + NFSX_HYPER)); 3348 uio_iov_len_add(uiop, -(tlen + NFSX_HYPER)); 3349 uio_uio_resid_add(uiop, -(tlen + NFSX_HYPER)); 3350 uiop->uio_offset += (tlen + NFSX_HYPER); 3351 } else { 3352 error = nfsm_advance(nd, NFSM_RNDUP(len), -1); 3353 if (error) 3354 goto nfsmout; 3355 } 3356 nfhp = NULL; 3357 if (nd->nd_flag & ND_NFSV3) { 3358 NFSM_DISSECT(tl, u_int32_t *, 3*NFSX_UNSIGNED); 3359 ncookie.lval[0] = *tl++; 3360 ncookie.lval[1] = *tl++; 3361 attrflag = fxdr_unsigned(int, *tl); 3362 if (attrflag) { 3363 error = nfsm_loadattr(nd, &nfsva); 3364 if (error) 3365 goto nfsmout; 3366 } 3367 NFSM_DISSECT(tl,u_int32_t *,NFSX_UNSIGNED); 3368 if (*tl) { 3369 error = nfsm_getfh(nd, &nfhp); 3370 if (error) 3371 goto nfsmout; 3372 } 3373 if (!attrflag && nfhp != NULL) { 3374 FREE((caddr_t)nfhp, M_NFSFH); 3375 nfhp = NULL; 3376 } 3377 } else { 3378 rderr = 0; 3379 nfsva.na_mntonfileno = 0xffffffff; 3380 error = nfsv4_loadattr(nd, NULL, &nfsva, &nfhp, 3381 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0, 3382 NULL, NULL, &rderr, p, cred); 3383 if (error) 3384 goto nfsmout; 3385 } 3386 3387 if (bigenough) { 3388 if (nd->nd_flag & ND_NFSV4) { 3389 if (rderr) { 3390 dp->d_fileno = 0; 3391 } else if (gotmnton) { 3392 if (nfsva.na_mntonfileno != 0xffffffff) 3393 dp->d_fileno = nfsva.na_mntonfileno; 3394 else 3395 dp->d_fileno = nfsva.na_fileid; 3396 } else if (nfsva.na_filesid[0] == 3397 dnp->n_vattr.na_filesid[0] && 3398 nfsva.na_filesid[1] == 3399 dnp->n_vattr.na_filesid[1]) { 3400 dp->d_fileno = nfsva.na_fileid; 3401 } else { 3402 do { 3403 fakefileno--; 3404 } while (fakefileno == 3405 nfsva.na_fileid); 3406 dp->d_fileno = fakefileno; 3407 } 3408 } else { 3409 dp->d_fileno = fileno; 3410 } 3411 *tl2++ = cookiep->nfsuquad[0] = cookie.lval[0] = 3412 ncookie.lval[0]; 3413 *tl2 = cookiep->nfsuquad[1] = cookie.lval[1] = 3414 ncookie.lval[1]; 3415 3416 if (nfhp != NULL) { 3417 if (NFSRV_CMPFH(nfhp->nfh_fh, nfhp->nfh_len, 3418 dnp->n_fhp->nfh_fh, dnp->n_fhp->nfh_len)) { 3419 VREF(vp); 3420 newvp = vp; 3421 unlocknewvp = 0; 3422 FREE((caddr_t)nfhp, M_NFSFH); 3423 np = dnp; 3424 } else if (isdotdot != 0) { 3425 /* 3426 * Skip doing a nfscl_nget() call for "..". 3427 * There's a race between acquiring the nfs 3428 * node here and lookups that look for the 3429 * directory being read (in the parent). 3430 * It would try to get a lock on ".." here, 3431 * owning the lock on the directory being 3432 * read. Lookup will hold the lock on ".." 3433 * and try to acquire the lock on the 3434 * directory being read. 3435 * If the directory is unlocked/relocked, 3436 * then there is a LOR with the buflock 3437 * vp is relocked. 3438 */ 3439 free(nfhp, M_NFSFH); 3440 } else { 3441 error = nfscl_nget(vnode_mount(vp), vp, 3442 nfhp, cnp, p, &np, NULL, LK_EXCLUSIVE); 3443 if (!error) { 3444 newvp = NFSTOV(np); 3445 unlocknewvp = 1; 3446 } 3447 } 3448 nfhp = NULL; 3449 if (newvp != NULLVP) { 3450 error = nfscl_loadattrcache(&newvp, 3451 &nfsva, NULL, NULL, 0, 0); 3452 if (error) { 3453 if (unlocknewvp) 3454 vput(newvp); 3455 else 3456 vrele(newvp); 3457 goto nfsmout; 3458 } 3459 dp->d_type = 3460 vtonfs_dtype(np->n_vattr.na_type); 3461 ndp->ni_vp = newvp; 3462 NFSCNHASH(cnp, HASHINIT); 3463 if (cnp->cn_namelen <= NCHNAMLEN && 3464 (newvp->v_type != VDIR || 3465 dctime.tv_sec != 0)) { 3466 cache_enter_time(ndp->ni_dvp, 3467 ndp->ni_vp, cnp, 3468 &nfsva.na_ctime, 3469 newvp->v_type != VDIR ? NULL : 3470 &dctime); 3471 } 3472 if (unlocknewvp) 3473 vput(newvp); 3474 else 3475 vrele(newvp); 3476 newvp = NULLVP; 3477 } 3478 } 3479 } else if (nfhp != NULL) { 3480 FREE((caddr_t)nfhp, M_NFSFH); 3481 } 3482 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 3483 more_dirs = fxdr_unsigned(int, *tl); 3484 } 3485 /* 3486 * If at end of rpc data, get the eof boolean 3487 */ 3488 if (!more_dirs) { 3489 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 3490 eof = fxdr_unsigned(int, *tl); 3491 if (tryformoredirs) 3492 more_dirs = !eof; 3493 if (nd->nd_flag & ND_NFSV4) { 3494 error = nfscl_postop_attr(nd, nap, attrflagp, 3495 stuff); 3496 if (error) 3497 goto nfsmout; 3498 } 3499 } 3500 mbuf_freem(nd->nd_mrep); 3501 nd->nd_mrep = NULL; 3502 } 3503 /* 3504 * Fill last record, iff any, out to a multiple of DIRBLKSIZ 3505 * by increasing d_reclen for the last record. 3506 */ 3507 if (blksiz > 0) { 3508 left = DIRBLKSIZ - blksiz; 3509 dp->d_reclen += left; 3510 uio_iov_base_add(uiop, left); 3511 uio_iov_len_add(uiop, -(left)); 3512 uio_uio_resid_add(uiop, -(left)); 3513 uiop->uio_offset += left; 3514 } 3515 3516 /* 3517 * If returning no data, assume end of file. 3518 * If not bigenough, return not end of file, since you aren't 3519 * returning all the data 3520 * Otherwise, return the eof flag from the server. 3521 */ 3522 if (eofp != NULL) { 3523 if (tresid == uio_uio_resid(uiop)) 3524 *eofp = 1; 3525 else if (!bigenough) 3526 *eofp = 0; 3527 else 3528 *eofp = eof; 3529 } 3530 3531 /* 3532 * Add extra empty records to any remaining DIRBLKSIZ chunks. 3533 */ 3534 while (uio_uio_resid(uiop) > 0 && uio_uio_resid(uiop) != tresid) { 3535 dp = (struct dirent *)uio_iov_base(uiop); 3536 dp->d_type = DT_UNKNOWN; 3537 dp->d_fileno = 0; 3538 dp->d_namlen = 0; 3539 dp->d_name[0] = '\0'; 3540 tl = (u_int32_t *)&dp->d_name[4]; 3541 *tl++ = cookie.lval[0]; 3542 *tl = cookie.lval[1]; 3543 dp->d_reclen = DIRBLKSIZ; 3544 uio_iov_base_add(uiop, DIRBLKSIZ); 3545 uio_iov_len_add(uiop, -(DIRBLKSIZ)); 3546 uio_uio_resid_add(uiop, -(DIRBLKSIZ)); 3547 uiop->uio_offset += DIRBLKSIZ; 3548 } 3549 3550 nfsmout: 3551 if (nd->nd_mrep != NULL) 3552 mbuf_freem(nd->nd_mrep); 3553 return (error); 3554 } 3555 #endif /* !APPLE */ 3556 3557 /* 3558 * Nfs commit rpc 3559 */ 3560 APPLESTATIC int 3561 nfsrpc_commit(vnode_t vp, u_quad_t offset, int cnt, struct ucred *cred, 3562 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff) 3563 { 3564 u_int32_t *tl; 3565 struct nfsrv_descript nfsd, *nd = &nfsd; 3566 nfsattrbit_t attrbits; 3567 int error; 3568 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 3569 3570 *attrflagp = 0; 3571 NFSCL_REQSTART(nd, NFSPROC_COMMIT, vp); 3572 NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 3573 txdr_hyper(offset, tl); 3574 tl += 2; 3575 *tl = txdr_unsigned(cnt); 3576 if (nd->nd_flag & ND_NFSV4) { 3577 /* 3578 * And do a Getattr op. 3579 */ 3580 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 3581 *tl = txdr_unsigned(NFSV4OP_GETATTR); 3582 NFSGETATTR_ATTRBIT(&attrbits); 3583 (void) nfsrv_putattrbit(nd, &attrbits); 3584 } 3585 error = nfscl_request(nd, vp, p, cred, stuff); 3586 if (error) 3587 return (error); 3588 error = nfscl_wcc_data(nd, vp, nap, attrflagp, NULL, stuff); 3589 if (!error && !nd->nd_repstat) { 3590 NFSM_DISSECT(tl, u_int32_t *, NFSX_VERF); 3591 NFSLOCKMNT(nmp); 3592 if (NFSBCMP(nmp->nm_verf, tl, NFSX_VERF)) { 3593 NFSBCOPY(tl, nmp->nm_verf, NFSX_VERF); 3594 nd->nd_repstat = NFSERR_STALEWRITEVERF; 3595 } 3596 NFSUNLOCKMNT(nmp); 3597 if (nd->nd_flag & ND_NFSV4) 3598 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 3599 } 3600 nfsmout: 3601 if (!error && nd->nd_repstat) 3602 error = nd->nd_repstat; 3603 mbuf_freem(nd->nd_mrep); 3604 return (error); 3605 } 3606 3607 /* 3608 * NFS byte range lock rpc. 3609 * (Mostly just calls one of the three lower level RPC routines.) 3610 */ 3611 APPLESTATIC int 3612 nfsrpc_advlock(vnode_t vp, off_t size, int op, struct flock *fl, 3613 int reclaim, struct ucred *cred, NFSPROC_T *p, void *id, int flags) 3614 { 3615 struct nfscllockowner *lp; 3616 struct nfsclclient *clp; 3617 struct nfsfh *nfhp; 3618 struct nfsrv_descript nfsd, *nd = &nfsd; 3619 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 3620 u_int64_t off, len; 3621 off_t start, end; 3622 u_int32_t clidrev = 0; 3623 int error = 0, newone = 0, expireret = 0, retrycnt, donelocally; 3624 int callcnt, dorpc; 3625 3626 /* 3627 * Convert the flock structure into a start and end and do POSIX 3628 * bounds checking. 3629 */ 3630 switch (fl->l_whence) { 3631 case SEEK_SET: 3632 case SEEK_CUR: 3633 /* 3634 * Caller is responsible for adding any necessary offset 3635 * when SEEK_CUR is used. 3636 */ 3637 start = fl->l_start; 3638 off = fl->l_start; 3639 break; 3640 case SEEK_END: 3641 start = size + fl->l_start; 3642 off = size + fl->l_start; 3643 break; 3644 default: 3645 return (EINVAL); 3646 }; 3647 if (start < 0) 3648 return (EINVAL); 3649 if (fl->l_len != 0) { 3650 end = start + fl->l_len - 1; 3651 if (end < start) 3652 return (EINVAL); 3653 } 3654 3655 len = fl->l_len; 3656 if (len == 0) 3657 len = NFS64BITSSET; 3658 retrycnt = 0; 3659 do { 3660 nd->nd_repstat = 0; 3661 if (op == F_GETLK) { 3662 error = nfscl_getcl(vnode_mount(vp), cred, p, 1, &clp); 3663 if (error) 3664 return (error); 3665 error = nfscl_lockt(vp, clp, off, len, fl, p, id, flags); 3666 if (!error) { 3667 clidrev = clp->nfsc_clientidrev; 3668 error = nfsrpc_lockt(nd, vp, clp, off, len, fl, cred, 3669 p, id, flags); 3670 } else if (error == -1) { 3671 error = 0; 3672 } 3673 nfscl_clientrelease(clp); 3674 } else if (op == F_UNLCK && fl->l_type == F_UNLCK) { 3675 /* 3676 * We must loop around for all lockowner cases. 3677 */ 3678 callcnt = 0; 3679 error = nfscl_getcl(vnode_mount(vp), cred, p, 1, &clp); 3680 if (error) 3681 return (error); 3682 do { 3683 error = nfscl_relbytelock(vp, off, len, cred, p, callcnt, 3684 clp, id, flags, &lp, &dorpc); 3685 /* 3686 * If it returns a NULL lp, we're done. 3687 */ 3688 if (lp == NULL) { 3689 if (callcnt == 0) 3690 nfscl_clientrelease(clp); 3691 else 3692 nfscl_releasealllocks(clp, vp, p, id, flags); 3693 return (error); 3694 } 3695 if (nmp->nm_clp != NULL) 3696 clidrev = nmp->nm_clp->nfsc_clientidrev; 3697 else 3698 clidrev = 0; 3699 /* 3700 * If the server doesn't support Posix lock semantics, 3701 * only allow locks on the entire file, since it won't 3702 * handle overlapping byte ranges. 3703 * There might still be a problem when a lock 3704 * upgrade/downgrade (read<->write) occurs, since the 3705 * server "might" expect an unlock first? 3706 */ 3707 if (dorpc && (lp->nfsl_open->nfso_posixlock || 3708 (off == 0 && len == NFS64BITSSET))) { 3709 /* 3710 * Since the lock records will go away, we must 3711 * wait for grace and delay here. 3712 */ 3713 do { 3714 error = nfsrpc_locku(nd, nmp, lp, off, len, 3715 NFSV4LOCKT_READ, cred, p, 0); 3716 if ((nd->nd_repstat == NFSERR_GRACE || 3717 nd->nd_repstat == NFSERR_DELAY) && 3718 error == 0) 3719 (void) nfs_catnap(PZERO, (int)nd->nd_repstat, 3720 "nfs_advlock"); 3721 } while ((nd->nd_repstat == NFSERR_GRACE || 3722 nd->nd_repstat == NFSERR_DELAY) && error == 0); 3723 } 3724 callcnt++; 3725 } while (error == 0 && nd->nd_repstat == 0); 3726 nfscl_releasealllocks(clp, vp, p, id, flags); 3727 } else if (op == F_SETLK) { 3728 error = nfscl_getbytelock(vp, off, len, fl->l_type, cred, p, 3729 NULL, 0, id, flags, NULL, NULL, &lp, &newone, &donelocally); 3730 if (error || donelocally) { 3731 return (error); 3732 } 3733 if (nmp->nm_clp != NULL) 3734 clidrev = nmp->nm_clp->nfsc_clientidrev; 3735 else 3736 clidrev = 0; 3737 nfhp = VTONFS(vp)->n_fhp; 3738 if (!lp->nfsl_open->nfso_posixlock && 3739 (off != 0 || len != NFS64BITSSET)) { 3740 error = EINVAL; 3741 } else { 3742 error = nfsrpc_lock(nd, nmp, vp, nfhp->nfh_fh, 3743 nfhp->nfh_len, lp, newone, reclaim, off, 3744 len, fl->l_type, cred, p, 0); 3745 } 3746 if (!error) 3747 error = nd->nd_repstat; 3748 nfscl_lockrelease(lp, error, newone); 3749 } else { 3750 error = EINVAL; 3751 } 3752 if (!error) 3753 error = nd->nd_repstat; 3754 if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 3755 error == NFSERR_STALEDONTRECOVER || 3756 error == NFSERR_STALECLIENTID || error == NFSERR_DELAY || 3757 error == NFSERR_BADSESSION) { 3758 (void) nfs_catnap(PZERO, error, "nfs_advlock"); 3759 } else if ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) 3760 && clidrev != 0) { 3761 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p); 3762 retrycnt++; 3763 } 3764 } while (error == NFSERR_GRACE || 3765 error == NFSERR_STALECLIENTID || error == NFSERR_DELAY || 3766 error == NFSERR_STALEDONTRECOVER || error == NFSERR_STALESTATEID || 3767 error == NFSERR_BADSESSION || 3768 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) && 3769 expireret == 0 && clidrev != 0 && retrycnt < 4)); 3770 if (error && retrycnt >= 4) 3771 error = EIO; 3772 return (error); 3773 } 3774 3775 /* 3776 * The lower level routine for the LockT case. 3777 */ 3778 APPLESTATIC int 3779 nfsrpc_lockt(struct nfsrv_descript *nd, vnode_t vp, 3780 struct nfsclclient *clp, u_int64_t off, u_int64_t len, struct flock *fl, 3781 struct ucred *cred, NFSPROC_T *p, void *id, int flags) 3782 { 3783 u_int32_t *tl; 3784 int error, type, size; 3785 uint8_t own[NFSV4CL_LOCKNAMELEN + NFSX_V4FHMAX]; 3786 struct nfsnode *np; 3787 struct nfsmount *nmp; 3788 3789 nmp = VFSTONFS(vp->v_mount); 3790 NFSCL_REQSTART(nd, NFSPROC_LOCKT, vp); 3791 NFSM_BUILD(tl, u_int32_t *, 7 * NFSX_UNSIGNED); 3792 if (fl->l_type == F_RDLCK) 3793 *tl++ = txdr_unsigned(NFSV4LOCKT_READ); 3794 else 3795 *tl++ = txdr_unsigned(NFSV4LOCKT_WRITE); 3796 txdr_hyper(off, tl); 3797 tl += 2; 3798 txdr_hyper(len, tl); 3799 tl += 2; 3800 *tl++ = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[0]; 3801 *tl = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[1]; 3802 nfscl_filllockowner(id, own, flags); 3803 np = VTONFS(vp); 3804 NFSBCOPY(np->n_fhp->nfh_fh, &own[NFSV4CL_LOCKNAMELEN], 3805 np->n_fhp->nfh_len); 3806 (void)nfsm_strtom(nd, own, NFSV4CL_LOCKNAMELEN + np->n_fhp->nfh_len); 3807 error = nfscl_request(nd, vp, p, cred, NULL); 3808 if (error) 3809 return (error); 3810 if (nd->nd_repstat == 0) { 3811 fl->l_type = F_UNLCK; 3812 } else if (nd->nd_repstat == NFSERR_DENIED) { 3813 nd->nd_repstat = 0; 3814 fl->l_whence = SEEK_SET; 3815 NFSM_DISSECT(tl, u_int32_t *, 8 * NFSX_UNSIGNED); 3816 fl->l_start = fxdr_hyper(tl); 3817 tl += 2; 3818 len = fxdr_hyper(tl); 3819 tl += 2; 3820 if (len == NFS64BITSSET) 3821 fl->l_len = 0; 3822 else 3823 fl->l_len = len; 3824 type = fxdr_unsigned(int, *tl++); 3825 if (type == NFSV4LOCKT_WRITE) 3826 fl->l_type = F_WRLCK; 3827 else 3828 fl->l_type = F_RDLCK; 3829 /* 3830 * XXX For now, I have no idea what to do with the 3831 * conflicting lock_owner, so I'll just set the pid == 0 3832 * and skip over the lock_owner. 3833 */ 3834 fl->l_pid = (pid_t)0; 3835 tl += 2; 3836 size = fxdr_unsigned(int, *tl); 3837 if (size < 0 || size > NFSV4_OPAQUELIMIT) 3838 error = EBADRPC; 3839 if (!error) 3840 error = nfsm_advance(nd, NFSM_RNDUP(size), -1); 3841 } else if (nd->nd_repstat == NFSERR_STALECLIENTID || 3842 nd->nd_repstat == NFSERR_BADSESSION) 3843 nfscl_initiate_recovery(clp); 3844 nfsmout: 3845 mbuf_freem(nd->nd_mrep); 3846 return (error); 3847 } 3848 3849 /* 3850 * Lower level function that performs the LockU RPC. 3851 */ 3852 static int 3853 nfsrpc_locku(struct nfsrv_descript *nd, struct nfsmount *nmp, 3854 struct nfscllockowner *lp, u_int64_t off, u_int64_t len, 3855 u_int32_t type, struct ucred *cred, NFSPROC_T *p, int syscred) 3856 { 3857 u_int32_t *tl; 3858 int error; 3859 3860 nfscl_reqstart(nd, NFSPROC_LOCKU, nmp, lp->nfsl_open->nfso_fh, 3861 lp->nfsl_open->nfso_fhlen, NULL, NULL); 3862 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID + 6 * NFSX_UNSIGNED); 3863 *tl++ = txdr_unsigned(type); 3864 *tl = txdr_unsigned(lp->nfsl_seqid); 3865 if (nfstest_outofseq && 3866 (arc4random() % nfstest_outofseq) == 0) 3867 *tl = txdr_unsigned(lp->nfsl_seqid + 1); 3868 tl++; 3869 if (NFSHASNFSV4N(nmp)) 3870 *tl++ = 0; 3871 else 3872 *tl++ = lp->nfsl_stateid.seqid; 3873 *tl++ = lp->nfsl_stateid.other[0]; 3874 *tl++ = lp->nfsl_stateid.other[1]; 3875 *tl++ = lp->nfsl_stateid.other[2]; 3876 txdr_hyper(off, tl); 3877 tl += 2; 3878 txdr_hyper(len, tl); 3879 if (syscred) 3880 nd->nd_flag |= ND_USEGSSNAME; 3881 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 3882 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 3883 NFSCL_INCRSEQID(lp->nfsl_seqid, nd); 3884 if (error) 3885 return (error); 3886 if (nd->nd_repstat == 0) { 3887 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID); 3888 lp->nfsl_stateid.seqid = *tl++; 3889 lp->nfsl_stateid.other[0] = *tl++; 3890 lp->nfsl_stateid.other[1] = *tl++; 3891 lp->nfsl_stateid.other[2] = *tl; 3892 } else if (nd->nd_repstat == NFSERR_STALESTATEID || 3893 nd->nd_repstat == NFSERR_BADSESSION) 3894 nfscl_initiate_recovery(lp->nfsl_open->nfso_own->nfsow_clp); 3895 nfsmout: 3896 mbuf_freem(nd->nd_mrep); 3897 return (error); 3898 } 3899 3900 /* 3901 * The actual Lock RPC. 3902 */ 3903 APPLESTATIC int 3904 nfsrpc_lock(struct nfsrv_descript *nd, struct nfsmount *nmp, vnode_t vp, 3905 u_int8_t *nfhp, int fhlen, struct nfscllockowner *lp, int newone, 3906 int reclaim, u_int64_t off, u_int64_t len, short type, struct ucred *cred, 3907 NFSPROC_T *p, int syscred) 3908 { 3909 u_int32_t *tl; 3910 int error, size; 3911 uint8_t own[NFSV4CL_LOCKNAMELEN + NFSX_V4FHMAX]; 3912 3913 nfscl_reqstart(nd, NFSPROC_LOCK, nmp, nfhp, fhlen, NULL, NULL); 3914 NFSM_BUILD(tl, u_int32_t *, 7 * NFSX_UNSIGNED); 3915 if (type == F_RDLCK) 3916 *tl++ = txdr_unsigned(NFSV4LOCKT_READ); 3917 else 3918 *tl++ = txdr_unsigned(NFSV4LOCKT_WRITE); 3919 *tl++ = txdr_unsigned(reclaim); 3920 txdr_hyper(off, tl); 3921 tl += 2; 3922 txdr_hyper(len, tl); 3923 tl += 2; 3924 if (newone) { 3925 *tl = newnfs_true; 3926 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID + 3927 2 * NFSX_UNSIGNED + NFSX_HYPER); 3928 *tl++ = txdr_unsigned(lp->nfsl_open->nfso_own->nfsow_seqid); 3929 if (NFSHASNFSV4N(nmp)) 3930 *tl++ = 0; 3931 else 3932 *tl++ = lp->nfsl_open->nfso_stateid.seqid; 3933 *tl++ = lp->nfsl_open->nfso_stateid.other[0]; 3934 *tl++ = lp->nfsl_open->nfso_stateid.other[1]; 3935 *tl++ = lp->nfsl_open->nfso_stateid.other[2]; 3936 *tl++ = txdr_unsigned(lp->nfsl_seqid); 3937 *tl++ = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[0]; 3938 *tl = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[1]; 3939 NFSBCOPY(lp->nfsl_owner, own, NFSV4CL_LOCKNAMELEN); 3940 NFSBCOPY(nfhp, &own[NFSV4CL_LOCKNAMELEN], fhlen); 3941 (void)nfsm_strtom(nd, own, NFSV4CL_LOCKNAMELEN + fhlen); 3942 } else { 3943 *tl = newnfs_false; 3944 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID + NFSX_UNSIGNED); 3945 if (NFSHASNFSV4N(nmp)) 3946 *tl++ = 0; 3947 else 3948 *tl++ = lp->nfsl_stateid.seqid; 3949 *tl++ = lp->nfsl_stateid.other[0]; 3950 *tl++ = lp->nfsl_stateid.other[1]; 3951 *tl++ = lp->nfsl_stateid.other[2]; 3952 *tl = txdr_unsigned(lp->nfsl_seqid); 3953 if (nfstest_outofseq && 3954 (arc4random() % nfstest_outofseq) == 0) 3955 *tl = txdr_unsigned(lp->nfsl_seqid + 1); 3956 } 3957 if (syscred) 3958 nd->nd_flag |= ND_USEGSSNAME; 3959 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, vp, p, cred, 3960 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 3961 if (error) 3962 return (error); 3963 if (newone) 3964 NFSCL_INCRSEQID(lp->nfsl_open->nfso_own->nfsow_seqid, nd); 3965 NFSCL_INCRSEQID(lp->nfsl_seqid, nd); 3966 if (nd->nd_repstat == 0) { 3967 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID); 3968 lp->nfsl_stateid.seqid = *tl++; 3969 lp->nfsl_stateid.other[0] = *tl++; 3970 lp->nfsl_stateid.other[1] = *tl++; 3971 lp->nfsl_stateid.other[2] = *tl; 3972 } else if (nd->nd_repstat == NFSERR_DENIED) { 3973 NFSM_DISSECT(tl, u_int32_t *, 8 * NFSX_UNSIGNED); 3974 size = fxdr_unsigned(int, *(tl + 7)); 3975 if (size < 0 || size > NFSV4_OPAQUELIMIT) 3976 error = EBADRPC; 3977 if (!error) 3978 error = nfsm_advance(nd, NFSM_RNDUP(size), -1); 3979 } else if (nd->nd_repstat == NFSERR_STALESTATEID || 3980 nd->nd_repstat == NFSERR_BADSESSION) 3981 nfscl_initiate_recovery(lp->nfsl_open->nfso_own->nfsow_clp); 3982 nfsmout: 3983 mbuf_freem(nd->nd_mrep); 3984 return (error); 3985 } 3986 3987 /* 3988 * nfs statfs rpc 3989 * (always called with the vp for the mount point) 3990 */ 3991 APPLESTATIC int 3992 nfsrpc_statfs(vnode_t vp, struct nfsstatfs *sbp, struct nfsfsinfo *fsp, 3993 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, 3994 void *stuff) 3995 { 3996 u_int32_t *tl = NULL; 3997 struct nfsrv_descript nfsd, *nd = &nfsd; 3998 struct nfsmount *nmp; 3999 nfsattrbit_t attrbits; 4000 int error; 4001 4002 *attrflagp = 0; 4003 nmp = VFSTONFS(vnode_mount(vp)); 4004 if (NFSHASNFSV4(nmp)) { 4005 /* 4006 * For V4, you actually do a getattr. 4007 */ 4008 NFSCL_REQSTART(nd, NFSPROC_GETATTR, vp); 4009 NFSSTATFS_GETATTRBIT(&attrbits); 4010 (void) nfsrv_putattrbit(nd, &attrbits); 4011 nd->nd_flag |= ND_USEGSSNAME; 4012 error = nfscl_request(nd, vp, p, cred, stuff); 4013 if (error) 4014 return (error); 4015 if (nd->nd_repstat == 0) { 4016 error = nfsv4_loadattr(nd, NULL, nap, NULL, NULL, 0, 4017 NULL, NULL, sbp, fsp, NULL, 0, NULL, NULL, NULL, p, 4018 cred); 4019 if (!error) { 4020 nmp->nm_fsid[0] = nap->na_filesid[0]; 4021 nmp->nm_fsid[1] = nap->na_filesid[1]; 4022 NFSSETHASSETFSID(nmp); 4023 *attrflagp = 1; 4024 } 4025 } else { 4026 error = nd->nd_repstat; 4027 } 4028 if (error) 4029 goto nfsmout; 4030 } else { 4031 NFSCL_REQSTART(nd, NFSPROC_FSSTAT, vp); 4032 error = nfscl_request(nd, vp, p, cred, stuff); 4033 if (error) 4034 return (error); 4035 if (nd->nd_flag & ND_NFSV3) { 4036 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 4037 if (error) 4038 goto nfsmout; 4039 } 4040 if (nd->nd_repstat) { 4041 error = nd->nd_repstat; 4042 goto nfsmout; 4043 } 4044 NFSM_DISSECT(tl, u_int32_t *, 4045 NFSX_STATFS(nd->nd_flag & ND_NFSV3)); 4046 } 4047 if (NFSHASNFSV3(nmp)) { 4048 sbp->sf_tbytes = fxdr_hyper(tl); tl += 2; 4049 sbp->sf_fbytes = fxdr_hyper(tl); tl += 2; 4050 sbp->sf_abytes = fxdr_hyper(tl); tl += 2; 4051 sbp->sf_tfiles = fxdr_hyper(tl); tl += 2; 4052 sbp->sf_ffiles = fxdr_hyper(tl); tl += 2; 4053 sbp->sf_afiles = fxdr_hyper(tl); tl += 2; 4054 sbp->sf_invarsec = fxdr_unsigned(u_int32_t, *tl); 4055 } else if (NFSHASNFSV4(nmp) == 0) { 4056 sbp->sf_tsize = fxdr_unsigned(u_int32_t, *tl++); 4057 sbp->sf_bsize = fxdr_unsigned(u_int32_t, *tl++); 4058 sbp->sf_blocks = fxdr_unsigned(u_int32_t, *tl++); 4059 sbp->sf_bfree = fxdr_unsigned(u_int32_t, *tl++); 4060 sbp->sf_bavail = fxdr_unsigned(u_int32_t, *tl); 4061 } 4062 nfsmout: 4063 mbuf_freem(nd->nd_mrep); 4064 return (error); 4065 } 4066 4067 /* 4068 * nfs pathconf rpc 4069 */ 4070 APPLESTATIC int 4071 nfsrpc_pathconf(vnode_t vp, struct nfsv3_pathconf *pc, 4072 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, 4073 void *stuff) 4074 { 4075 struct nfsrv_descript nfsd, *nd = &nfsd; 4076 struct nfsmount *nmp; 4077 u_int32_t *tl; 4078 nfsattrbit_t attrbits; 4079 int error; 4080 4081 *attrflagp = 0; 4082 nmp = VFSTONFS(vnode_mount(vp)); 4083 if (NFSHASNFSV4(nmp)) { 4084 /* 4085 * For V4, you actually do a getattr. 4086 */ 4087 NFSCL_REQSTART(nd, NFSPROC_GETATTR, vp); 4088 NFSPATHCONF_GETATTRBIT(&attrbits); 4089 (void) nfsrv_putattrbit(nd, &attrbits); 4090 nd->nd_flag |= ND_USEGSSNAME; 4091 error = nfscl_request(nd, vp, p, cred, stuff); 4092 if (error) 4093 return (error); 4094 if (nd->nd_repstat == 0) { 4095 error = nfsv4_loadattr(nd, NULL, nap, NULL, NULL, 0, 4096 pc, NULL, NULL, NULL, NULL, 0, NULL, NULL, NULL, p, 4097 cred); 4098 if (!error) 4099 *attrflagp = 1; 4100 } else { 4101 error = nd->nd_repstat; 4102 } 4103 } else { 4104 NFSCL_REQSTART(nd, NFSPROC_PATHCONF, vp); 4105 error = nfscl_request(nd, vp, p, cred, stuff); 4106 if (error) 4107 return (error); 4108 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 4109 if (nd->nd_repstat && !error) 4110 error = nd->nd_repstat; 4111 if (!error) { 4112 NFSM_DISSECT(tl, u_int32_t *, NFSX_V3PATHCONF); 4113 pc->pc_linkmax = fxdr_unsigned(u_int32_t, *tl++); 4114 pc->pc_namemax = fxdr_unsigned(u_int32_t, *tl++); 4115 pc->pc_notrunc = fxdr_unsigned(u_int32_t, *tl++); 4116 pc->pc_chownrestricted = 4117 fxdr_unsigned(u_int32_t, *tl++); 4118 pc->pc_caseinsensitive = 4119 fxdr_unsigned(u_int32_t, *tl++); 4120 pc->pc_casepreserving = fxdr_unsigned(u_int32_t, *tl); 4121 } 4122 } 4123 nfsmout: 4124 mbuf_freem(nd->nd_mrep); 4125 return (error); 4126 } 4127 4128 /* 4129 * nfs version 3 fsinfo rpc call 4130 */ 4131 APPLESTATIC int 4132 nfsrpc_fsinfo(vnode_t vp, struct nfsfsinfo *fsp, struct ucred *cred, 4133 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff) 4134 { 4135 u_int32_t *tl; 4136 struct nfsrv_descript nfsd, *nd = &nfsd; 4137 int error; 4138 4139 *attrflagp = 0; 4140 NFSCL_REQSTART(nd, NFSPROC_FSINFO, vp); 4141 error = nfscl_request(nd, vp, p, cred, stuff); 4142 if (error) 4143 return (error); 4144 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 4145 if (nd->nd_repstat && !error) 4146 error = nd->nd_repstat; 4147 if (!error) { 4148 NFSM_DISSECT(tl, u_int32_t *, NFSX_V3FSINFO); 4149 fsp->fs_rtmax = fxdr_unsigned(u_int32_t, *tl++); 4150 fsp->fs_rtpref = fxdr_unsigned(u_int32_t, *tl++); 4151 fsp->fs_rtmult = fxdr_unsigned(u_int32_t, *tl++); 4152 fsp->fs_wtmax = fxdr_unsigned(u_int32_t, *tl++); 4153 fsp->fs_wtpref = fxdr_unsigned(u_int32_t, *tl++); 4154 fsp->fs_wtmult = fxdr_unsigned(u_int32_t, *tl++); 4155 fsp->fs_dtpref = fxdr_unsigned(u_int32_t, *tl++); 4156 fsp->fs_maxfilesize = fxdr_hyper(tl); 4157 tl += 2; 4158 fxdr_nfsv3time(tl, &fsp->fs_timedelta); 4159 tl += 2; 4160 fsp->fs_properties = fxdr_unsigned(u_int32_t, *tl); 4161 } 4162 nfsmout: 4163 mbuf_freem(nd->nd_mrep); 4164 return (error); 4165 } 4166 4167 /* 4168 * This function performs the Renew RPC. 4169 */ 4170 APPLESTATIC int 4171 nfsrpc_renew(struct nfsclclient *clp, struct nfsclds *dsp, struct ucred *cred, 4172 NFSPROC_T *p) 4173 { 4174 u_int32_t *tl; 4175 struct nfsrv_descript nfsd; 4176 struct nfsrv_descript *nd = &nfsd; 4177 struct nfsmount *nmp; 4178 int error; 4179 struct nfssockreq *nrp; 4180 4181 nmp = clp->nfsc_nmp; 4182 if (nmp == NULL) 4183 return (0); 4184 nfscl_reqstart(nd, NFSPROC_RENEW, nmp, NULL, 0, NULL, 4185 &dsp->nfsclds_sess); 4186 if (!NFSHASNFSV4N(nmp)) { 4187 /* NFSv4.1 just uses a Sequence Op and not a Renew. */ 4188 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 4189 *tl++ = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[0]; 4190 *tl = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[1]; 4191 } 4192 nrp = dsp->nfsclds_sockp; 4193 if (nrp == NULL) 4194 /* If NULL, use the MDS socket. */ 4195 nrp = &nmp->nm_sockreq; 4196 nd->nd_flag |= ND_USEGSSNAME; 4197 error = newnfs_request(nd, nmp, NULL, nrp, NULL, p, cred, 4198 NFS_PROG, NFS_VER4, NULL, 1, NULL, &dsp->nfsclds_sess); 4199 if (error) 4200 return (error); 4201 error = nd->nd_repstat; 4202 mbuf_freem(nd->nd_mrep); 4203 return (error); 4204 } 4205 4206 /* 4207 * This function performs the Releaselockowner RPC. 4208 */ 4209 APPLESTATIC int 4210 nfsrpc_rellockown(struct nfsmount *nmp, struct nfscllockowner *lp, 4211 uint8_t *fh, int fhlen, struct ucred *cred, NFSPROC_T *p) 4212 { 4213 struct nfsrv_descript nfsd, *nd = &nfsd; 4214 u_int32_t *tl; 4215 int error; 4216 uint8_t own[NFSV4CL_LOCKNAMELEN + NFSX_V4FHMAX]; 4217 4218 if (NFSHASNFSV4N(nmp)) { 4219 /* For NFSv4.1, do a FreeStateID. */ 4220 nfscl_reqstart(nd, NFSPROC_FREESTATEID, nmp, NULL, 0, NULL, 4221 NULL); 4222 nfsm_stateidtom(nd, &lp->nfsl_stateid, NFSSTATEID_PUTSTATEID); 4223 } else { 4224 nfscl_reqstart(nd, NFSPROC_RELEASELCKOWN, nmp, NULL, 0, NULL, 4225 NULL); 4226 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 4227 *tl++ = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[0]; 4228 *tl = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[1]; 4229 NFSBCOPY(lp->nfsl_owner, own, NFSV4CL_LOCKNAMELEN); 4230 NFSBCOPY(fh, &own[NFSV4CL_LOCKNAMELEN], fhlen); 4231 (void)nfsm_strtom(nd, own, NFSV4CL_LOCKNAMELEN + fhlen); 4232 } 4233 nd->nd_flag |= ND_USEGSSNAME; 4234 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 4235 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4236 if (error) 4237 return (error); 4238 error = nd->nd_repstat; 4239 mbuf_freem(nd->nd_mrep); 4240 return (error); 4241 } 4242 4243 /* 4244 * This function performs the Compound to get the mount pt FH. 4245 */ 4246 APPLESTATIC int 4247 nfsrpc_getdirpath(struct nfsmount *nmp, u_char *dirpath, struct ucred *cred, 4248 NFSPROC_T *p) 4249 { 4250 u_int32_t *tl; 4251 struct nfsrv_descript nfsd; 4252 struct nfsrv_descript *nd = &nfsd; 4253 u_char *cp, *cp2; 4254 int error, cnt, len, setnil; 4255 u_int32_t *opcntp; 4256 4257 nfscl_reqstart(nd, NFSPROC_PUTROOTFH, nmp, NULL, 0, &opcntp, NULL); 4258 cp = dirpath; 4259 cnt = 0; 4260 do { 4261 setnil = 0; 4262 while (*cp == '/') 4263 cp++; 4264 cp2 = cp; 4265 while (*cp2 != '\0' && *cp2 != '/') 4266 cp2++; 4267 if (*cp2 == '/') { 4268 setnil = 1; 4269 *cp2 = '\0'; 4270 } 4271 if (cp2 != cp) { 4272 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 4273 *tl = txdr_unsigned(NFSV4OP_LOOKUP); 4274 nfsm_strtom(nd, cp, strlen(cp)); 4275 cnt++; 4276 } 4277 if (setnil) 4278 *cp2++ = '/'; 4279 cp = cp2; 4280 } while (*cp != '\0'); 4281 if (NFSHASNFSV4N(nmp)) 4282 /* Has a Sequence Op done by nfscl_reqstart(). */ 4283 *opcntp = txdr_unsigned(3 + cnt); 4284 else 4285 *opcntp = txdr_unsigned(2 + cnt); 4286 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 4287 *tl = txdr_unsigned(NFSV4OP_GETFH); 4288 nd->nd_flag |= ND_USEGSSNAME; 4289 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 4290 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4291 if (error) 4292 return (error); 4293 if (nd->nd_repstat == 0) { 4294 NFSM_DISSECT(tl, u_int32_t *, (3 + 2 * cnt) * NFSX_UNSIGNED); 4295 tl += (2 + 2 * cnt); 4296 if ((len = fxdr_unsigned(int, *tl)) <= 0 || 4297 len > NFSX_FHMAX) { 4298 nd->nd_repstat = NFSERR_BADXDR; 4299 } else { 4300 nd->nd_repstat = nfsrv_mtostr(nd, nmp->nm_fh, len); 4301 if (nd->nd_repstat == 0) 4302 nmp->nm_fhsize = len; 4303 } 4304 } 4305 error = nd->nd_repstat; 4306 nfsmout: 4307 mbuf_freem(nd->nd_mrep); 4308 return (error); 4309 } 4310 4311 /* 4312 * This function performs the Delegreturn RPC. 4313 */ 4314 APPLESTATIC int 4315 nfsrpc_delegreturn(struct nfscldeleg *dp, struct ucred *cred, 4316 struct nfsmount *nmp, NFSPROC_T *p, int syscred) 4317 { 4318 u_int32_t *tl; 4319 struct nfsrv_descript nfsd; 4320 struct nfsrv_descript *nd = &nfsd; 4321 int error; 4322 4323 nfscl_reqstart(nd, NFSPROC_DELEGRETURN, nmp, dp->nfsdl_fh, 4324 dp->nfsdl_fhlen, NULL, NULL); 4325 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID); 4326 if (NFSHASNFSV4N(nmp)) 4327 *tl++ = 0; 4328 else 4329 *tl++ = dp->nfsdl_stateid.seqid; 4330 *tl++ = dp->nfsdl_stateid.other[0]; 4331 *tl++ = dp->nfsdl_stateid.other[1]; 4332 *tl = dp->nfsdl_stateid.other[2]; 4333 if (syscred) 4334 nd->nd_flag |= ND_USEGSSNAME; 4335 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 4336 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4337 if (error) 4338 return (error); 4339 error = nd->nd_repstat; 4340 mbuf_freem(nd->nd_mrep); 4341 return (error); 4342 } 4343 4344 /* 4345 * nfs getacl call. 4346 */ 4347 APPLESTATIC int 4348 nfsrpc_getacl(vnode_t vp, struct ucred *cred, NFSPROC_T *p, 4349 struct acl *aclp, void *stuff) 4350 { 4351 struct nfsrv_descript nfsd, *nd = &nfsd; 4352 int error; 4353 nfsattrbit_t attrbits; 4354 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 4355 4356 if (nfsrv_useacl == 0 || !NFSHASNFSV4(nmp)) 4357 return (EOPNOTSUPP); 4358 NFSCL_REQSTART(nd, NFSPROC_GETACL, vp); 4359 NFSZERO_ATTRBIT(&attrbits); 4360 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_ACL); 4361 (void) nfsrv_putattrbit(nd, &attrbits); 4362 error = nfscl_request(nd, vp, p, cred, stuff); 4363 if (error) 4364 return (error); 4365 if (!nd->nd_repstat) 4366 error = nfsv4_loadattr(nd, vp, NULL, NULL, NULL, 0, NULL, 4367 NULL, NULL, NULL, aclp, 0, NULL, NULL, NULL, p, cred); 4368 else 4369 error = nd->nd_repstat; 4370 mbuf_freem(nd->nd_mrep); 4371 return (error); 4372 } 4373 4374 /* 4375 * nfs setacl call. 4376 */ 4377 APPLESTATIC int 4378 nfsrpc_setacl(vnode_t vp, struct ucred *cred, NFSPROC_T *p, 4379 struct acl *aclp, void *stuff) 4380 { 4381 int error; 4382 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 4383 4384 if (nfsrv_useacl == 0 || !NFSHASNFSV4(nmp)) 4385 return (EOPNOTSUPP); 4386 error = nfsrpc_setattr(vp, NULL, aclp, cred, p, NULL, NULL, stuff); 4387 return (error); 4388 } 4389 4390 /* 4391 * nfs setacl call. 4392 */ 4393 static int 4394 nfsrpc_setaclrpc(vnode_t vp, struct ucred *cred, NFSPROC_T *p, 4395 struct acl *aclp, nfsv4stateid_t *stateidp, void *stuff) 4396 { 4397 struct nfsrv_descript nfsd, *nd = &nfsd; 4398 int error; 4399 nfsattrbit_t attrbits; 4400 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 4401 4402 if (!NFSHASNFSV4(nmp)) 4403 return (EOPNOTSUPP); 4404 NFSCL_REQSTART(nd, NFSPROC_SETACL, vp); 4405 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID); 4406 NFSZERO_ATTRBIT(&attrbits); 4407 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_ACL); 4408 (void) nfsv4_fillattr(nd, vnode_mount(vp), vp, aclp, NULL, NULL, 0, 4409 &attrbits, NULL, NULL, 0, 0, 0, 0, (uint64_t)0); 4410 error = nfscl_request(nd, vp, p, cred, stuff); 4411 if (error) 4412 return (error); 4413 /* Don't care about the pre/postop attributes */ 4414 mbuf_freem(nd->nd_mrep); 4415 return (nd->nd_repstat); 4416 } 4417 4418 /* 4419 * Do the NFSv4.1 Exchange ID. 4420 */ 4421 int 4422 nfsrpc_exchangeid(struct nfsmount *nmp, struct nfsclclient *clp, 4423 struct nfssockreq *nrp, uint32_t exchflags, struct nfsclds **dspp, 4424 struct ucred *cred, NFSPROC_T *p) 4425 { 4426 uint32_t *tl, v41flags; 4427 struct nfsrv_descript nfsd; 4428 struct nfsrv_descript *nd = &nfsd; 4429 struct nfsclds *dsp; 4430 struct timespec verstime; 4431 int error, len; 4432 4433 *dspp = NULL; 4434 nfscl_reqstart(nd, NFSPROC_EXCHANGEID, nmp, NULL, 0, NULL, NULL); 4435 NFSM_BUILD(tl, uint32_t *, 2 * NFSX_UNSIGNED); 4436 *tl++ = txdr_unsigned(nfsboottime.tv_sec); /* Client owner */ 4437 *tl = txdr_unsigned(clp->nfsc_rev); 4438 (void) nfsm_strtom(nd, clp->nfsc_id, clp->nfsc_idlen); 4439 4440 NFSM_BUILD(tl, uint32_t *, 3 * NFSX_UNSIGNED); 4441 *tl++ = txdr_unsigned(exchflags); 4442 *tl++ = txdr_unsigned(NFSV4EXCH_SP4NONE); 4443 4444 /* Set the implementation id4 */ 4445 *tl = txdr_unsigned(1); 4446 (void) nfsm_strtom(nd, "freebsd.org", strlen("freebsd.org")); 4447 (void) nfsm_strtom(nd, version, strlen(version)); 4448 NFSM_BUILD(tl, uint32_t *, NFSX_V4TIME); 4449 verstime.tv_sec = 1293840000; /* Jan 1, 2011 */ 4450 verstime.tv_nsec = 0; 4451 txdr_nfsv4time(&verstime, tl); 4452 nd->nd_flag |= ND_USEGSSNAME; 4453 error = newnfs_request(nd, nmp, NULL, nrp, NULL, p, cred, 4454 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4455 NFSCL_DEBUG(1, "exchangeid err=%d reps=%d\n", error, 4456 (int)nd->nd_repstat); 4457 if (error != 0) 4458 return (error); 4459 if (nd->nd_repstat == 0) { 4460 NFSM_DISSECT(tl, uint32_t *, 6 * NFSX_UNSIGNED + NFSX_HYPER); 4461 len = fxdr_unsigned(int, *(tl + 7)); 4462 if (len < 0 || len > NFSV4_OPAQUELIMIT) { 4463 error = NFSERR_BADXDR; 4464 goto nfsmout; 4465 } 4466 dsp = malloc(sizeof(struct nfsclds) + len, M_NFSCLDS, 4467 M_WAITOK | M_ZERO); 4468 dsp->nfsclds_expire = NFSD_MONOSEC + clp->nfsc_renew; 4469 dsp->nfsclds_servownlen = len; 4470 dsp->nfsclds_sess.nfsess_clientid.lval[0] = *tl++; 4471 dsp->nfsclds_sess.nfsess_clientid.lval[1] = *tl++; 4472 dsp->nfsclds_sess.nfsess_sequenceid = 4473 fxdr_unsigned(uint32_t, *tl++); 4474 v41flags = fxdr_unsigned(uint32_t, *tl); 4475 if ((v41flags & NFSV4EXCH_USEPNFSMDS) != 0 && 4476 NFSHASPNFSOPT(nmp)) { 4477 NFSCL_DEBUG(1, "set PNFS\n"); 4478 NFSLOCKMNT(nmp); 4479 nmp->nm_state |= NFSSTA_PNFS; 4480 NFSUNLOCKMNT(nmp); 4481 dsp->nfsclds_flags |= NFSCLDS_MDS; 4482 } 4483 if ((v41flags & NFSV4EXCH_USEPNFSDS) != 0) 4484 dsp->nfsclds_flags |= NFSCLDS_DS; 4485 if (len > 0) 4486 nd->nd_repstat = nfsrv_mtostr(nd, 4487 dsp->nfsclds_serverown, len); 4488 if (nd->nd_repstat == 0) { 4489 mtx_init(&dsp->nfsclds_mtx, "nfsds", NULL, MTX_DEF); 4490 mtx_init(&dsp->nfsclds_sess.nfsess_mtx, "nfssession", 4491 NULL, MTX_DEF); 4492 nfscl_initsessionslots(&dsp->nfsclds_sess); 4493 *dspp = dsp; 4494 } else 4495 free(dsp, M_NFSCLDS); 4496 } 4497 error = nd->nd_repstat; 4498 nfsmout: 4499 mbuf_freem(nd->nd_mrep); 4500 return (error); 4501 } 4502 4503 /* 4504 * Do the NFSv4.1 Create Session. 4505 */ 4506 int 4507 nfsrpc_createsession(struct nfsmount *nmp, struct nfsclsession *sep, 4508 struct nfssockreq *nrp, uint32_t sequenceid, int mds, struct ucred *cred, 4509 NFSPROC_T *p) 4510 { 4511 uint32_t crflags, *tl; 4512 struct nfsrv_descript nfsd; 4513 struct nfsrv_descript *nd = &nfsd; 4514 int error, irdcnt; 4515 4516 nfscl_reqstart(nd, NFSPROC_CREATESESSION, nmp, NULL, 0, NULL, NULL); 4517 NFSM_BUILD(tl, uint32_t *, 4 * NFSX_UNSIGNED); 4518 *tl++ = sep->nfsess_clientid.lval[0]; 4519 *tl++ = sep->nfsess_clientid.lval[1]; 4520 *tl++ = txdr_unsigned(sequenceid); 4521 crflags = (NFSMNT_RDONLY(nmp->nm_mountp) ? 0 : NFSV4CRSESS_PERSIST); 4522 if (nfscl_enablecallb != 0 && nfs_numnfscbd > 0) 4523 crflags |= NFSV4CRSESS_CONNBACKCHAN; 4524 *tl = txdr_unsigned(crflags); 4525 4526 /* Fill in fore channel attributes. */ 4527 NFSM_BUILD(tl, uint32_t *, 7 * NFSX_UNSIGNED); 4528 *tl++ = 0; /* Header pad size */ 4529 *tl++ = txdr_unsigned(100000); /* Max request size */ 4530 *tl++ = txdr_unsigned(100000); /* Max response size */ 4531 *tl++ = txdr_unsigned(4096); /* Max response size cached */ 4532 *tl++ = txdr_unsigned(20); /* Max operations */ 4533 *tl++ = txdr_unsigned(64); /* Max slots */ 4534 *tl = 0; /* No rdma ird */ 4535 4536 /* Fill in back channel attributes. */ 4537 NFSM_BUILD(tl, uint32_t *, 7 * NFSX_UNSIGNED); 4538 *tl++ = 0; /* Header pad size */ 4539 *tl++ = txdr_unsigned(10000); /* Max request size */ 4540 *tl++ = txdr_unsigned(10000); /* Max response size */ 4541 *tl++ = txdr_unsigned(4096); /* Max response size cached */ 4542 *tl++ = txdr_unsigned(4); /* Max operations */ 4543 *tl++ = txdr_unsigned(NFSV4_CBSLOTS); /* Max slots */ 4544 *tl = 0; /* No rdma ird */ 4545 4546 NFSM_BUILD(tl, uint32_t *, 8 * NFSX_UNSIGNED); 4547 *tl++ = txdr_unsigned(NFS_CALLBCKPROG); /* Call back prog # */ 4548 4549 /* Allow AUTH_SYS callbacks as uid, gid == 0. */ 4550 *tl++ = txdr_unsigned(1); /* Auth_sys only */ 4551 *tl++ = txdr_unsigned(AUTH_SYS); /* AUTH_SYS type */ 4552 *tl++ = txdr_unsigned(nfsboottime.tv_sec); /* time stamp */ 4553 *tl++ = 0; /* Null machine name */ 4554 *tl++ = 0; /* Uid == 0 */ 4555 *tl++ = 0; /* Gid == 0 */ 4556 *tl = 0; /* No additional gids */ 4557 nd->nd_flag |= ND_USEGSSNAME; 4558 error = newnfs_request(nd, nmp, NULL, nrp, NULL, p, cred, NFS_PROG, 4559 NFS_VER4, NULL, 1, NULL, NULL); 4560 if (error != 0) 4561 return (error); 4562 if (nd->nd_repstat == 0) { 4563 NFSM_DISSECT(tl, uint32_t *, NFSX_V4SESSIONID + 4564 2 * NFSX_UNSIGNED); 4565 bcopy(tl, sep->nfsess_sessionid, NFSX_V4SESSIONID); 4566 tl += NFSX_V4SESSIONID / NFSX_UNSIGNED; 4567 sep->nfsess_sequenceid = fxdr_unsigned(uint32_t, *tl++); 4568 crflags = fxdr_unsigned(uint32_t, *tl); 4569 if ((crflags & NFSV4CRSESS_PERSIST) != 0 && mds != 0) { 4570 NFSLOCKMNT(nmp); 4571 nmp->nm_state |= NFSSTA_SESSPERSIST; 4572 NFSUNLOCKMNT(nmp); 4573 } 4574 4575 /* Get the fore channel slot count. */ 4576 NFSM_DISSECT(tl, uint32_t *, 7 * NFSX_UNSIGNED); 4577 tl += 3; /* Skip the other counts. */ 4578 sep->nfsess_maxcache = fxdr_unsigned(int, *tl++); 4579 tl++; 4580 sep->nfsess_foreslots = fxdr_unsigned(uint16_t, *tl++); 4581 NFSCL_DEBUG(4, "fore slots=%d\n", (int)sep->nfsess_foreslots); 4582 irdcnt = fxdr_unsigned(int, *tl); 4583 if (irdcnt > 0) 4584 NFSM_DISSECT(tl, uint32_t *, irdcnt * NFSX_UNSIGNED); 4585 4586 /* and the back channel slot count. */ 4587 NFSM_DISSECT(tl, uint32_t *, 7 * NFSX_UNSIGNED); 4588 tl += 5; 4589 sep->nfsess_backslots = fxdr_unsigned(uint16_t, *tl); 4590 NFSCL_DEBUG(4, "back slots=%d\n", (int)sep->nfsess_backslots); 4591 } 4592 error = nd->nd_repstat; 4593 nfsmout: 4594 mbuf_freem(nd->nd_mrep); 4595 return (error); 4596 } 4597 4598 /* 4599 * Do the NFSv4.1 Destroy Session. 4600 */ 4601 int 4602 nfsrpc_destroysession(struct nfsmount *nmp, struct nfsclclient *clp, 4603 struct ucred *cred, NFSPROC_T *p) 4604 { 4605 uint32_t *tl; 4606 struct nfsrv_descript nfsd; 4607 struct nfsrv_descript *nd = &nfsd; 4608 int error; 4609 4610 nfscl_reqstart(nd, NFSPROC_DESTROYSESSION, nmp, NULL, 0, NULL, NULL); 4611 NFSM_BUILD(tl, uint32_t *, NFSX_V4SESSIONID); 4612 bcopy(NFSMNT_MDSSESSION(nmp)->nfsess_sessionid, tl, NFSX_V4SESSIONID); 4613 nd->nd_flag |= ND_USEGSSNAME; 4614 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 4615 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4616 if (error != 0) 4617 return (error); 4618 error = nd->nd_repstat; 4619 mbuf_freem(nd->nd_mrep); 4620 return (error); 4621 } 4622 4623 /* 4624 * Do the NFSv4.1 Destroy Client. 4625 */ 4626 int 4627 nfsrpc_destroyclient(struct nfsmount *nmp, struct nfsclclient *clp, 4628 struct ucred *cred, NFSPROC_T *p) 4629 { 4630 uint32_t *tl; 4631 struct nfsrv_descript nfsd; 4632 struct nfsrv_descript *nd = &nfsd; 4633 int error; 4634 4635 nfscl_reqstart(nd, NFSPROC_DESTROYCLIENT, nmp, NULL, 0, NULL, NULL); 4636 NFSM_BUILD(tl, uint32_t *, 2 * NFSX_UNSIGNED); 4637 *tl++ = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[0]; 4638 *tl = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[1]; 4639 nd->nd_flag |= ND_USEGSSNAME; 4640 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 4641 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4642 if (error != 0) 4643 return (error); 4644 error = nd->nd_repstat; 4645 mbuf_freem(nd->nd_mrep); 4646 return (error); 4647 } 4648 4649 /* 4650 * Do the NFSv4.1 LayoutGet. 4651 */ 4652 int 4653 nfsrpc_layoutget(struct nfsmount *nmp, uint8_t *fhp, int fhlen, int iomode, 4654 uint64_t offset, uint64_t len, uint64_t minlen, int layoutlen, 4655 nfsv4stateid_t *stateidp, int *retonclosep, struct nfsclflayouthead *flhp, 4656 struct ucred *cred, NFSPROC_T *p, void *stuff) 4657 { 4658 uint32_t *tl; 4659 struct nfsrv_descript nfsd, *nd = &nfsd; 4660 struct nfsfh *nfhp; 4661 struct nfsclflayout *flp, *prevflp, *tflp; 4662 int cnt, error, gotiomode, fhcnt, nfhlen, i, j; 4663 uint8_t *cp; 4664 uint64_t retlen; 4665 4666 flp = NULL; 4667 gotiomode = -1; 4668 nfscl_reqstart(nd, NFSPROC_LAYOUTGET, nmp, fhp, fhlen, NULL, NULL); 4669 NFSM_BUILD(tl, uint32_t *, 4 * NFSX_UNSIGNED + 3 * NFSX_HYPER + 4670 NFSX_STATEID); 4671 *tl++ = newnfs_false; /* Don't signal availability. */ 4672 *tl++ = txdr_unsigned(NFSLAYOUT_NFSV4_1_FILES); 4673 *tl++ = txdr_unsigned(iomode); 4674 txdr_hyper(offset, tl); 4675 tl += 2; 4676 txdr_hyper(len, tl); 4677 tl += 2; 4678 txdr_hyper(minlen, tl); 4679 tl += 2; 4680 *tl++ = txdr_unsigned(stateidp->seqid); 4681 NFSCL_DEBUG(4, "layget seq=%d\n", (int)stateidp->seqid); 4682 *tl++ = stateidp->other[0]; 4683 *tl++ = stateidp->other[1]; 4684 *tl++ = stateidp->other[2]; 4685 *tl = txdr_unsigned(layoutlen); 4686 nd->nd_flag |= ND_USEGSSNAME; 4687 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 4688 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4689 if (error != 0) 4690 return (error); 4691 if (nd->nd_repstat == 0) { 4692 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED + NFSX_STATEID); 4693 if (*tl++ != 0) 4694 *retonclosep = 1; 4695 else 4696 *retonclosep = 0; 4697 stateidp->seqid = fxdr_unsigned(uint32_t, *tl++); 4698 NFSCL_DEBUG(4, "retoncls=%d stseq=%d\n", *retonclosep, 4699 (int)stateidp->seqid); 4700 stateidp->other[0] = *tl++; 4701 stateidp->other[1] = *tl++; 4702 stateidp->other[2] = *tl++; 4703 cnt = fxdr_unsigned(int, *tl); 4704 NFSCL_DEBUG(4, "layg cnt=%d\n", cnt); 4705 if (cnt <= 0 || cnt > 10000) { 4706 /* Don't accept more than 10000 layouts in reply. */ 4707 error = NFSERR_BADXDR; 4708 goto nfsmout; 4709 } 4710 for (i = 0; i < cnt; i++) { 4711 /* Dissect all the way to the file handle cnt. */ 4712 NFSM_DISSECT(tl, uint32_t *, 3 * NFSX_HYPER + 4713 6 * NFSX_UNSIGNED + NFSX_V4DEVICEID); 4714 fhcnt = fxdr_unsigned(int, *(tl + 11 + 4715 NFSX_V4DEVICEID / NFSX_UNSIGNED)); 4716 NFSCL_DEBUG(4, "fhcnt=%d\n", fhcnt); 4717 if (fhcnt < 0 || fhcnt > 100) { 4718 /* Don't accept more than 100 file handles. */ 4719 error = NFSERR_BADXDR; 4720 goto nfsmout; 4721 } 4722 if (fhcnt > 1) 4723 flp = malloc(sizeof(*flp) + (fhcnt - 1) * 4724 sizeof(struct nfsfh *), 4725 M_NFSFLAYOUT, M_WAITOK); 4726 else 4727 flp = malloc(sizeof(*flp), 4728 M_NFSFLAYOUT, M_WAITOK); 4729 flp->nfsfl_flags = 0; 4730 flp->nfsfl_fhcnt = 0; 4731 flp->nfsfl_devp = NULL; 4732 flp->nfsfl_off = fxdr_hyper(tl); tl += 2; 4733 retlen = fxdr_hyper(tl); tl += 2; 4734 if (flp->nfsfl_off + retlen < flp->nfsfl_off) 4735 flp->nfsfl_end = UINT64_MAX - flp->nfsfl_off; 4736 else 4737 flp->nfsfl_end = flp->nfsfl_off + retlen; 4738 flp->nfsfl_iomode = fxdr_unsigned(int, *tl++); 4739 if (gotiomode == -1) 4740 gotiomode = flp->nfsfl_iomode; 4741 NFSCL_DEBUG(4, "layg reqiom=%d retiom=%d\n", iomode, 4742 (int)flp->nfsfl_iomode); 4743 if (fxdr_unsigned(int, *tl++) != 4744 NFSLAYOUT_NFSV4_1_FILES) { 4745 printf("NFSv4.1: got non-files layout\n"); 4746 error = NFSERR_BADXDR; 4747 goto nfsmout; 4748 } 4749 NFSBCOPY(++tl, flp->nfsfl_dev, NFSX_V4DEVICEID); 4750 tl += (NFSX_V4DEVICEID / NFSX_UNSIGNED); 4751 flp->nfsfl_util = fxdr_unsigned(uint32_t, *tl++); 4752 NFSCL_DEBUG(4, "flutil=0x%x\n", flp->nfsfl_util); 4753 flp->nfsfl_stripe1 = fxdr_unsigned(uint32_t, *tl++); 4754 flp->nfsfl_patoff = fxdr_hyper(tl); tl += 2; 4755 if (fxdr_unsigned(int, *tl) != fhcnt) { 4756 printf("EEK! bad fhcnt\n"); 4757 error = NFSERR_BADXDR; 4758 goto nfsmout; 4759 } 4760 for (j = 0; j < fhcnt; j++) { 4761 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 4762 nfhlen = fxdr_unsigned(int, *tl); 4763 if (nfhlen <= 0 || nfhlen > NFSX_V4FHMAX) { 4764 error = NFSERR_BADXDR; 4765 goto nfsmout; 4766 } 4767 nfhp = malloc(sizeof(*nfhp) + nfhlen - 1, 4768 M_NFSFH, M_WAITOK); 4769 flp->nfsfl_fh[j] = nfhp; 4770 flp->nfsfl_fhcnt++; 4771 nfhp->nfh_len = nfhlen; 4772 NFSM_DISSECT(cp, uint8_t *, NFSM_RNDUP(nfhlen)); 4773 NFSBCOPY(cp, nfhp->nfh_fh, nfhlen); 4774 } 4775 if (flp->nfsfl_iomode == gotiomode) { 4776 /* Keep the list in increasing offset order. */ 4777 tflp = LIST_FIRST(flhp); 4778 prevflp = NULL; 4779 while (tflp != NULL && 4780 tflp->nfsfl_off < flp->nfsfl_off) { 4781 prevflp = tflp; 4782 tflp = LIST_NEXT(tflp, nfsfl_list); 4783 } 4784 if (prevflp == NULL) 4785 LIST_INSERT_HEAD(flhp, flp, nfsfl_list); 4786 else 4787 LIST_INSERT_AFTER(prevflp, flp, 4788 nfsfl_list); 4789 } else { 4790 printf("nfscl_layoutget(): got wrong iomode\n"); 4791 nfscl_freeflayout(flp); 4792 } 4793 flp = NULL; 4794 } 4795 } 4796 if (nd->nd_repstat != 0 && error == 0) 4797 error = nd->nd_repstat; 4798 nfsmout: 4799 if (error != 0 && flp != NULL) 4800 nfscl_freeflayout(flp); 4801 mbuf_freem(nd->nd_mrep); 4802 return (error); 4803 } 4804 4805 /* 4806 * Do the NFSv4.1 Get Device Info. 4807 */ 4808 int 4809 nfsrpc_getdeviceinfo(struct nfsmount *nmp, uint8_t *deviceid, int layouttype, 4810 uint32_t *notifybitsp, struct nfscldevinfo **ndip, struct ucred *cred, 4811 NFSPROC_T *p) 4812 { 4813 uint32_t cnt, *tl; 4814 struct nfsrv_descript nfsd; 4815 struct nfsrv_descript *nd = &nfsd; 4816 struct sockaddr_storage ss; 4817 struct nfsclds *dsp = NULL, **dspp; 4818 struct nfscldevinfo *ndi; 4819 int addrcnt, bitcnt, error, i, isudp, j, pos, safilled, stripecnt; 4820 uint8_t stripeindex; 4821 4822 *ndip = NULL; 4823 ndi = NULL; 4824 nfscl_reqstart(nd, NFSPROC_GETDEVICEINFO, nmp, NULL, 0, NULL, NULL); 4825 NFSM_BUILD(tl, uint32_t *, NFSX_V4DEVICEID + 3 * NFSX_UNSIGNED); 4826 NFSBCOPY(deviceid, tl, NFSX_V4DEVICEID); 4827 tl += (NFSX_V4DEVICEID / NFSX_UNSIGNED); 4828 *tl++ = txdr_unsigned(layouttype); 4829 *tl++ = txdr_unsigned(100000); 4830 if (notifybitsp != NULL && *notifybitsp != 0) { 4831 *tl = txdr_unsigned(1); /* One word of bits. */ 4832 NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED); 4833 *tl = txdr_unsigned(*notifybitsp); 4834 } else 4835 *tl = txdr_unsigned(0); 4836 nd->nd_flag |= ND_USEGSSNAME; 4837 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 4838 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4839 if (error != 0) 4840 return (error); 4841 if (nd->nd_repstat == 0) { 4842 NFSM_DISSECT(tl, uint32_t *, 3 * NFSX_UNSIGNED); 4843 if (layouttype != fxdr_unsigned(int, *tl++)) 4844 printf("EEK! devinfo layout type not same!\n"); 4845 stripecnt = fxdr_unsigned(int, *++tl); 4846 NFSCL_DEBUG(4, "stripecnt=%d\n", stripecnt); 4847 if (stripecnt < 1 || stripecnt > 4096) { 4848 printf("NFS devinfo stripecnt %d: out of range\n", 4849 stripecnt); 4850 error = NFSERR_BADXDR; 4851 goto nfsmout; 4852 } 4853 NFSM_DISSECT(tl, uint32_t *, (stripecnt + 1) * NFSX_UNSIGNED); 4854 addrcnt = fxdr_unsigned(int, *(tl + stripecnt)); 4855 NFSCL_DEBUG(4, "addrcnt=%d\n", addrcnt); 4856 if (addrcnt < 1 || addrcnt > 128) { 4857 printf("NFS devinfo addrcnt %d: out of range\n", 4858 addrcnt); 4859 error = NFSERR_BADXDR; 4860 goto nfsmout; 4861 } 4862 4863 /* 4864 * Now we know how many stripe indices and addresses, so 4865 * we can allocate the structure the correct size. 4866 */ 4867 i = (stripecnt * sizeof(uint8_t)) / sizeof(struct nfsclds *) 4868 + 1; 4869 NFSCL_DEBUG(4, "stripeindices=%d\n", i); 4870 ndi = malloc(sizeof(*ndi) + (addrcnt + i) * 4871 sizeof(struct nfsclds *), M_NFSDEVINFO, M_WAITOK | M_ZERO); 4872 NFSBCOPY(deviceid, ndi->nfsdi_deviceid, NFSX_V4DEVICEID); 4873 ndi->nfsdi_refcnt = 0; 4874 ndi->nfsdi_stripecnt = stripecnt; 4875 ndi->nfsdi_addrcnt = addrcnt; 4876 /* Fill in the stripe indices. */ 4877 for (i = 0; i < stripecnt; i++) { 4878 stripeindex = fxdr_unsigned(uint8_t, *tl++); 4879 NFSCL_DEBUG(4, "stripeind=%d\n", stripeindex); 4880 if (stripeindex >= addrcnt) { 4881 printf("NFS devinfo stripeindex %d: too big\n", 4882 (int)stripeindex); 4883 error = NFSERR_BADXDR; 4884 goto nfsmout; 4885 } 4886 nfsfldi_setstripeindex(ndi, i, stripeindex); 4887 } 4888 4889 /* Now, dissect the server address(es). */ 4890 safilled = 0; 4891 for (i = 0; i < addrcnt; i++) { 4892 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 4893 cnt = fxdr_unsigned(uint32_t, *tl); 4894 if (cnt == 0) { 4895 printf("NFS devinfo 0 len addrlist\n"); 4896 error = NFSERR_BADXDR; 4897 goto nfsmout; 4898 } 4899 dspp = nfsfldi_addr(ndi, i); 4900 pos = arc4random() % cnt; /* Choose one. */ 4901 safilled = 0; 4902 for (j = 0; j < cnt; j++) { 4903 error = nfsv4_getipaddr(nd, &ss, &isudp); 4904 if (error != 0 && error != EPERM) { 4905 error = NFSERR_BADXDR; 4906 goto nfsmout; 4907 } 4908 if (error == 0 && isudp == 0) { 4909 /* 4910 * The algorithm is: 4911 * - use "pos" entry if it is of the 4912 * same af_family or none of them 4913 * is of the same af_family 4914 * else 4915 * - use the first one of the same 4916 * af_family. 4917 */ 4918 if ((safilled == 0 && ss.ss_family == 4919 nmp->nm_nam->sa_family) || 4920 (j == pos && 4921 (safilled == 0 || ss.ss_family == 4922 nmp->nm_nam->sa_family)) || 4923 (safilled == 1 && ss.ss_family == 4924 nmp->nm_nam->sa_family)) { 4925 error = nfsrpc_fillsa(nmp, &ss, 4926 &dsp, p); 4927 if (error == 0) { 4928 *dspp = dsp; 4929 if (ss.ss_family == 4930 nmp->nm_nam->sa_family) 4931 safilled = 2; 4932 else 4933 safilled = 1; 4934 } 4935 } 4936 } 4937 } 4938 if (safilled == 0) 4939 break; 4940 } 4941 4942 /* And the notify bits. */ 4943 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 4944 if (safilled != 0) { 4945 bitcnt = fxdr_unsigned(int, *tl); 4946 if (bitcnt > 0) { 4947 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 4948 if (notifybitsp != NULL) 4949 *notifybitsp = 4950 fxdr_unsigned(uint32_t, *tl); 4951 } 4952 *ndip = ndi; 4953 } else 4954 error = EPERM; 4955 } 4956 if (nd->nd_repstat != 0) 4957 error = nd->nd_repstat; 4958 nfsmout: 4959 if (error != 0 && ndi != NULL) 4960 nfscl_freedevinfo(ndi); 4961 mbuf_freem(nd->nd_mrep); 4962 return (error); 4963 } 4964 4965 /* 4966 * Do the NFSv4.1 LayoutCommit. 4967 */ 4968 int 4969 nfsrpc_layoutcommit(struct nfsmount *nmp, uint8_t *fh, int fhlen, int reclaim, 4970 uint64_t off, uint64_t len, uint64_t lastbyte, nfsv4stateid_t *stateidp, 4971 int layouttype, int layoutupdatecnt, uint8_t *layp, struct ucred *cred, 4972 NFSPROC_T *p, void *stuff) 4973 { 4974 uint32_t *tl; 4975 struct nfsrv_descript nfsd, *nd = &nfsd; 4976 int error, outcnt, i; 4977 uint8_t *cp; 4978 4979 nfscl_reqstart(nd, NFSPROC_LAYOUTCOMMIT, nmp, fh, fhlen, NULL, NULL); 4980 NFSM_BUILD(tl, uint32_t *, 5 * NFSX_UNSIGNED + 3 * NFSX_HYPER + 4981 NFSX_STATEID); 4982 txdr_hyper(off, tl); 4983 tl += 2; 4984 txdr_hyper(len, tl); 4985 tl += 2; 4986 if (reclaim != 0) 4987 *tl++ = newnfs_true; 4988 else 4989 *tl++ = newnfs_false; 4990 *tl++ = txdr_unsigned(stateidp->seqid); 4991 *tl++ = stateidp->other[0]; 4992 *tl++ = stateidp->other[1]; 4993 *tl++ = stateidp->other[2]; 4994 *tl++ = newnfs_true; 4995 if (lastbyte < off) 4996 lastbyte = off; 4997 else if (lastbyte >= (off + len)) 4998 lastbyte = off + len - 1; 4999 txdr_hyper(lastbyte, tl); 5000 tl += 2; 5001 *tl++ = newnfs_false; 5002 *tl++ = txdr_unsigned(layouttype); 5003 *tl = txdr_unsigned(layoutupdatecnt); 5004 if (layoutupdatecnt > 0) { 5005 KASSERT(layouttype != NFSLAYOUT_NFSV4_1_FILES, 5006 ("Must be nil for Files Layout")); 5007 outcnt = NFSM_RNDUP(layoutupdatecnt); 5008 NFSM_BUILD(cp, uint8_t *, outcnt); 5009 NFSBCOPY(layp, cp, layoutupdatecnt); 5010 cp += layoutupdatecnt; 5011 for (i = 0; i < (outcnt - layoutupdatecnt); i++) 5012 *cp++ = 0x0; 5013 } 5014 nd->nd_flag |= ND_USEGSSNAME; 5015 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 5016 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 5017 if (error != 0) 5018 return (error); 5019 error = nd->nd_repstat; 5020 mbuf_freem(nd->nd_mrep); 5021 return (error); 5022 } 5023 5024 /* 5025 * Do the NFSv4.1 LayoutReturn. 5026 */ 5027 int 5028 nfsrpc_layoutreturn(struct nfsmount *nmp, uint8_t *fh, int fhlen, int reclaim, 5029 int layouttype, uint32_t iomode, int layoutreturn, uint64_t offset, 5030 uint64_t len, nfsv4stateid_t *stateidp, int layoutcnt, uint32_t *layp, 5031 struct ucred *cred, NFSPROC_T *p, void *stuff) 5032 { 5033 uint32_t *tl; 5034 struct nfsrv_descript nfsd, *nd = &nfsd; 5035 int error, outcnt, i; 5036 uint8_t *cp; 5037 5038 nfscl_reqstart(nd, NFSPROC_LAYOUTRETURN, nmp, fh, fhlen, NULL, NULL); 5039 NFSM_BUILD(tl, uint32_t *, 4 * NFSX_UNSIGNED); 5040 if (reclaim != 0) 5041 *tl++ = newnfs_true; 5042 else 5043 *tl++ = newnfs_false; 5044 *tl++ = txdr_unsigned(layouttype); 5045 *tl++ = txdr_unsigned(iomode); 5046 *tl = txdr_unsigned(layoutreturn); 5047 if (layoutreturn == NFSLAYOUTRETURN_FILE) { 5048 NFSM_BUILD(tl, uint32_t *, 2 * NFSX_HYPER + NFSX_STATEID + 5049 NFSX_UNSIGNED); 5050 txdr_hyper(offset, tl); 5051 tl += 2; 5052 txdr_hyper(len, tl); 5053 tl += 2; 5054 NFSCL_DEBUG(4, "layoutret stseq=%d\n", (int)stateidp->seqid); 5055 *tl++ = txdr_unsigned(stateidp->seqid); 5056 *tl++ = stateidp->other[0]; 5057 *tl++ = stateidp->other[1]; 5058 *tl++ = stateidp->other[2]; 5059 *tl = txdr_unsigned(layoutcnt); 5060 if (layoutcnt > 0) { 5061 outcnt = NFSM_RNDUP(layoutcnt); 5062 NFSM_BUILD(cp, uint8_t *, outcnt); 5063 NFSBCOPY(layp, cp, layoutcnt); 5064 cp += layoutcnt; 5065 for (i = 0; i < (outcnt - layoutcnt); i++) 5066 *cp++ = 0x0; 5067 } 5068 } 5069 nd->nd_flag |= ND_USEGSSNAME; 5070 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 5071 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 5072 if (error != 0) 5073 return (error); 5074 if (nd->nd_repstat == 0) { 5075 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 5076 if (*tl != 0) { 5077 NFSM_DISSECT(tl, uint32_t *, NFSX_STATEID); 5078 stateidp->seqid = fxdr_unsigned(uint32_t, *tl++); 5079 stateidp->other[0] = *tl++; 5080 stateidp->other[1] = *tl++; 5081 stateidp->other[2] = *tl; 5082 } 5083 } else 5084 error = nd->nd_repstat; 5085 nfsmout: 5086 mbuf_freem(nd->nd_mrep); 5087 return (error); 5088 } 5089 5090 /* 5091 * Acquire a layout and devinfo, if possible. The caller must have acquired 5092 * a reference count on the nfsclclient structure before calling this. 5093 * Return the layout in lypp with a reference count on it, if successful. 5094 */ 5095 static int 5096 nfsrpc_getlayout(struct nfsmount *nmp, vnode_t vp, struct nfsfh *nfhp, 5097 int iomode, uint32_t *notifybitsp, nfsv4stateid_t *stateidp, uint64_t off, 5098 struct nfscllayout **lypp, struct ucred *cred, NFSPROC_T *p) 5099 { 5100 struct nfscllayout *lyp; 5101 struct nfsclflayout *flp, *tflp; 5102 struct nfscldevinfo *dip; 5103 struct nfsclflayouthead flh; 5104 int error = 0, islocked, layoutlen, recalled, retonclose; 5105 nfsv4stateid_t stateid; 5106 5107 *lypp = NULL; 5108 /* 5109 * If lyp is returned non-NULL, there will be a refcnt (shared lock) 5110 * on it, iff flp != NULL or a lock (exclusive lock) on it iff 5111 * flp == NULL. 5112 */ 5113 lyp = nfscl_getlayout(nmp->nm_clp, nfhp->nfh_fh, nfhp->nfh_len, 5114 off, &flp, &recalled); 5115 islocked = 0; 5116 if (lyp == NULL || flp == NULL) { 5117 if (recalled != 0) 5118 return (EIO); 5119 LIST_INIT(&flh); 5120 layoutlen = NFSMNT_MDSSESSION(nmp)->nfsess_maxcache - 5121 (NFSX_STATEID + 3 * NFSX_UNSIGNED); 5122 if (lyp == NULL) { 5123 stateid.seqid = 0; 5124 stateid.other[0] = stateidp->other[0]; 5125 stateid.other[1] = stateidp->other[1]; 5126 stateid.other[2] = stateidp->other[2]; 5127 error = nfsrpc_layoutget(nmp, nfhp->nfh_fh, 5128 nfhp->nfh_len, iomode, (uint64_t)0, INT64_MAX, 5129 (uint64_t)0, layoutlen, &stateid, &retonclose, 5130 &flh, cred, p, NULL); 5131 } else { 5132 islocked = 1; 5133 stateid.seqid = lyp->nfsly_stateid.seqid; 5134 stateid.other[0] = lyp->nfsly_stateid.other[0]; 5135 stateid.other[1] = lyp->nfsly_stateid.other[1]; 5136 stateid.other[2] = lyp->nfsly_stateid.other[2]; 5137 error = nfsrpc_layoutget(nmp, nfhp->nfh_fh, 5138 nfhp->nfh_len, iomode, off, INT64_MAX, 5139 (uint64_t)0, layoutlen, &stateid, &retonclose, 5140 &flh, cred, p, NULL); 5141 } 5142 if (error == 0) 5143 LIST_FOREACH(tflp, &flh, nfsfl_list) { 5144 error = nfscl_adddevinfo(nmp, NULL, tflp); 5145 if (error != 0) { 5146 error = nfsrpc_getdeviceinfo(nmp, 5147 tflp->nfsfl_dev, 5148 NFSLAYOUT_NFSV4_1_FILES, 5149 notifybitsp, &dip, cred, p); 5150 if (error != 0) 5151 break; 5152 error = nfscl_adddevinfo(nmp, dip, 5153 tflp); 5154 if (error != 0) 5155 printf( 5156 "getlayout: cannot add\n"); 5157 } 5158 } 5159 if (error == 0) { 5160 /* 5161 * nfscl_layout() always returns with the nfsly_lock 5162 * set to a refcnt (shared lock). 5163 */ 5164 error = nfscl_layout(nmp, vp, nfhp->nfh_fh, 5165 nfhp->nfh_len, &stateid, retonclose, &flh, &lyp, 5166 cred, p); 5167 if (error == 0) 5168 *lypp = lyp; 5169 } else if (islocked != 0) 5170 nfsv4_unlock(&lyp->nfsly_lock, 0); 5171 } else 5172 *lypp = lyp; 5173 return (error); 5174 } 5175 5176 /* 5177 * Do a TCP connection plus exchange id and create session. 5178 * If successful, a "struct nfsclds" is linked into the list for the 5179 * mount point and a pointer to it is returned. 5180 */ 5181 static int 5182 nfsrpc_fillsa(struct nfsmount *nmp, struct sockaddr_storage *ssp, 5183 struct nfsclds **dspp, NFSPROC_T *p) 5184 { 5185 struct sockaddr_in *msad, *sad, *ssd; 5186 struct sockaddr_in6 *msad6, *sad6, *ssd6; 5187 struct nfsclclient *clp; 5188 struct nfssockreq *nrp; 5189 struct nfsclds *dsp, *tdsp; 5190 int error; 5191 enum nfsclds_state retv; 5192 uint32_t sequenceid; 5193 5194 KASSERT(nmp->nm_sockreq.nr_cred != NULL, 5195 ("nfsrpc_fillsa: NULL nr_cred")); 5196 NFSLOCKCLSTATE(); 5197 clp = nmp->nm_clp; 5198 NFSUNLOCKCLSTATE(); 5199 if (clp == NULL) 5200 return (EPERM); 5201 if (ssp->ss_family == AF_INET) { 5202 ssd = (struct sockaddr_in *)ssp; 5203 NFSLOCKMNT(nmp); 5204 5205 /* 5206 * Check to see if we already have a session for this 5207 * address that is usable for a DS. 5208 * Note that the MDS's address is in a different place 5209 * than the sessions already acquired for DS's. 5210 */ 5211 msad = (struct sockaddr_in *)nmp->nm_sockreq.nr_nam; 5212 tdsp = TAILQ_FIRST(&nmp->nm_sess); 5213 while (tdsp != NULL) { 5214 if (msad != NULL && msad->sin_family == AF_INET && 5215 ssd->sin_addr.s_addr == msad->sin_addr.s_addr && 5216 ssd->sin_port == msad->sin_port && 5217 (tdsp->nfsclds_flags & NFSCLDS_DS) != 0) { 5218 *dspp = tdsp; 5219 NFSUNLOCKMNT(nmp); 5220 NFSCL_DEBUG(4, "fnd same addr\n"); 5221 return (0); 5222 } 5223 tdsp = TAILQ_NEXT(tdsp, nfsclds_list); 5224 if (tdsp != NULL && tdsp->nfsclds_sockp != NULL) 5225 msad = (struct sockaddr_in *) 5226 tdsp->nfsclds_sockp->nr_nam; 5227 else 5228 msad = NULL; 5229 } 5230 NFSUNLOCKMNT(nmp); 5231 5232 /* No IP address match, so look for new/trunked one. */ 5233 sad = malloc(sizeof(*sad), M_SONAME, M_WAITOK | M_ZERO); 5234 sad->sin_len = sizeof(*sad); 5235 sad->sin_family = AF_INET; 5236 sad->sin_port = ssd->sin_port; 5237 sad->sin_addr.s_addr = ssd->sin_addr.s_addr; 5238 nrp = malloc(sizeof(*nrp), M_NFSSOCKREQ, M_WAITOK | M_ZERO); 5239 nrp->nr_nam = (struct sockaddr *)sad; 5240 } else if (ssp->ss_family == AF_INET6) { 5241 ssd6 = (struct sockaddr_in6 *)ssp; 5242 NFSLOCKMNT(nmp); 5243 5244 /* 5245 * Check to see if we already have a session for this 5246 * address that is usable for a DS. 5247 * Note that the MDS's address is in a different place 5248 * than the sessions already acquired for DS's. 5249 */ 5250 msad6 = (struct sockaddr_in6 *)nmp->nm_sockreq.nr_nam; 5251 tdsp = TAILQ_FIRST(&nmp->nm_sess); 5252 while (tdsp != NULL) { 5253 if (msad6 != NULL && msad6->sin6_family == AF_INET6 && 5254 IN6_ARE_ADDR_EQUAL(&ssd6->sin6_addr, 5255 &msad6->sin6_addr) && 5256 ssd6->sin6_port == msad6->sin6_port && 5257 (tdsp->nfsclds_flags & NFSCLDS_DS) != 0) { 5258 *dspp = tdsp; 5259 NFSUNLOCKMNT(nmp); 5260 return (0); 5261 } 5262 tdsp = TAILQ_NEXT(tdsp, nfsclds_list); 5263 if (tdsp != NULL && tdsp->nfsclds_sockp != NULL) 5264 msad6 = (struct sockaddr_in6 *) 5265 tdsp->nfsclds_sockp->nr_nam; 5266 else 5267 msad6 = NULL; 5268 } 5269 NFSUNLOCKMNT(nmp); 5270 5271 /* No IP address match, so look for new/trunked one. */ 5272 sad6 = malloc(sizeof(*sad6), M_SONAME, M_WAITOK | M_ZERO); 5273 sad6->sin6_len = sizeof(*sad6); 5274 sad6->sin6_family = AF_INET6; 5275 sad6->sin6_port = ssd6->sin6_port; 5276 NFSBCOPY(&ssd6->sin6_addr, &sad6->sin6_addr, 5277 sizeof(struct in6_addr)); 5278 nrp = malloc(sizeof(*nrp), M_NFSSOCKREQ, M_WAITOK | M_ZERO); 5279 nrp->nr_nam = (struct sockaddr *)sad6; 5280 } else 5281 return (EPERM); 5282 5283 nrp->nr_sotype = SOCK_STREAM; 5284 mtx_init(&nrp->nr_mtx, "nfssock", NULL, MTX_DEF); 5285 nrp->nr_prog = NFS_PROG; 5286 nrp->nr_vers = NFS_VER4; 5287 5288 /* 5289 * Use the credentials that were used for the mount, which are 5290 * in nmp->nm_sockreq.nr_cred for newnfs_connect() etc. 5291 * Ref. counting the credentials with crhold() is probably not 5292 * necessary, since nm_sockreq.nr_cred won't be crfree()'d until 5293 * unmount, but I did it anyhow. 5294 */ 5295 nrp->nr_cred = crhold(nmp->nm_sockreq.nr_cred); 5296 error = newnfs_connect(nmp, nrp, NULL, p, 0); 5297 NFSCL_DEBUG(3, "DS connect=%d\n", error); 5298 5299 /* Now, do the exchangeid and create session. */ 5300 if (error == 0) 5301 error = nfsrpc_exchangeid(nmp, clp, nrp, NFSV4EXCH_USEPNFSDS, 5302 &dsp, nrp->nr_cred, p); 5303 NFSCL_DEBUG(3, "DS exchangeid=%d\n", error); 5304 if (error == 0) { 5305 dsp->nfsclds_sockp = nrp; 5306 NFSLOCKMNT(nmp); 5307 retv = nfscl_getsameserver(nmp, dsp, &tdsp); 5308 NFSCL_DEBUG(3, "getsame ret=%d\n", retv); 5309 if (retv == NFSDSP_USETHISSESSION) { 5310 NFSUNLOCKMNT(nmp); 5311 /* 5312 * If there is already a session for this server, 5313 * use it. 5314 */ 5315 (void)newnfs_disconnect(nrp); 5316 nfscl_freenfsclds(dsp); 5317 *dspp = tdsp; 5318 return (0); 5319 } 5320 if (retv == NFSDSP_SEQTHISSESSION) 5321 sequenceid = tdsp->nfsclds_sess.nfsess_sequenceid; 5322 else 5323 sequenceid = dsp->nfsclds_sess.nfsess_sequenceid; 5324 NFSUNLOCKMNT(nmp); 5325 error = nfsrpc_createsession(nmp, &dsp->nfsclds_sess, 5326 nrp, sequenceid, 0, nrp->nr_cred, p); 5327 NFSCL_DEBUG(3, "DS createsess=%d\n", error); 5328 } else { 5329 NFSFREECRED(nrp->nr_cred); 5330 NFSFREEMUTEX(&nrp->nr_mtx); 5331 free(nrp->nr_nam, M_SONAME); 5332 free(nrp, M_NFSSOCKREQ); 5333 } 5334 if (error == 0) { 5335 NFSCL_DEBUG(3, "add DS session\n"); 5336 /* 5337 * Put it at the end of the list. That way the list 5338 * is ordered by when the entry was added. This matters 5339 * since the one done first is the one that should be 5340 * used for sequencid'ing any subsequent create sessions. 5341 */ 5342 NFSLOCKMNT(nmp); 5343 TAILQ_INSERT_TAIL(&nmp->nm_sess, dsp, nfsclds_list); 5344 NFSUNLOCKMNT(nmp); 5345 *dspp = dsp; 5346 } else if (dsp != NULL) 5347 nfscl_freenfsclds(dsp); 5348 return (error); 5349 } 5350 5351 /* 5352 * Do the NFSv4.1 Reclaim Complete. 5353 */ 5354 int 5355 nfsrpc_reclaimcomplete(struct nfsmount *nmp, struct ucred *cred, NFSPROC_T *p) 5356 { 5357 uint32_t *tl; 5358 struct nfsrv_descript nfsd; 5359 struct nfsrv_descript *nd = &nfsd; 5360 int error; 5361 5362 nfscl_reqstart(nd, NFSPROC_RECLAIMCOMPL, nmp, NULL, 0, NULL, NULL); 5363 NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED); 5364 *tl = newnfs_false; 5365 nd->nd_flag |= ND_USEGSSNAME; 5366 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 5367 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 5368 if (error != 0) 5369 return (error); 5370 error = nd->nd_repstat; 5371 mbuf_freem(nd->nd_mrep); 5372 return (error); 5373 } 5374 5375 /* 5376 * Initialize the slot tables for a session. 5377 */ 5378 static void 5379 nfscl_initsessionslots(struct nfsclsession *sep) 5380 { 5381 int i; 5382 5383 for (i = 0; i < NFSV4_CBSLOTS; i++) { 5384 if (sep->nfsess_cbslots[i].nfssl_reply != NULL) 5385 m_freem(sep->nfsess_cbslots[i].nfssl_reply); 5386 NFSBZERO(&sep->nfsess_cbslots[i], sizeof(struct nfsslot)); 5387 } 5388 for (i = 0; i < 64; i++) 5389 sep->nfsess_slotseq[i] = 0; 5390 sep->nfsess_slots = 0; 5391 } 5392 5393 /* 5394 * Called to try and do an I/O operation via an NFSv4.1 Data Server (DS). 5395 */ 5396 int 5397 nfscl_doiods(vnode_t vp, struct uio *uiop, int *iomode, int *must_commit, 5398 uint32_t rwaccess, struct ucred *cred, NFSPROC_T *p) 5399 { 5400 struct nfsnode *np = VTONFS(vp); 5401 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 5402 struct nfscllayout *layp; 5403 struct nfscldevinfo *dip; 5404 struct nfsclflayout *rflp; 5405 nfsv4stateid_t stateid; 5406 struct ucred *newcred; 5407 uint64_t lastbyte, len, off, oresid, xfer; 5408 int eof, error, iolaymode, recalled; 5409 void *lckp; 5410 5411 if (!NFSHASPNFS(nmp) || nfscl_enablecallb == 0 || nfs_numnfscbd == 0 || 5412 (np->n_flag & NNOLAYOUT) != 0) 5413 return (EIO); 5414 /* Now, get a reference cnt on the clientid for this mount. */ 5415 if (nfscl_getref(nmp) == 0) 5416 return (EIO); 5417 5418 /* Find an appropriate stateid. */ 5419 newcred = NFSNEWCRED(cred); 5420 error = nfscl_getstateid(vp, np->n_fhp->nfh_fh, np->n_fhp->nfh_len, 5421 rwaccess, 1, newcred, p, &stateid, &lckp); 5422 if (error != 0) { 5423 NFSFREECRED(newcred); 5424 nfscl_relref(nmp); 5425 return (error); 5426 } 5427 /* Search for a layout for this file. */ 5428 off = uiop->uio_offset; 5429 layp = nfscl_getlayout(nmp->nm_clp, np->n_fhp->nfh_fh, 5430 np->n_fhp->nfh_len, off, &rflp, &recalled); 5431 if (layp == NULL || rflp == NULL) { 5432 if (recalled != 0) { 5433 NFSFREECRED(newcred); 5434 nfscl_relref(nmp); 5435 return (EIO); 5436 } 5437 if (layp != NULL) { 5438 nfscl_rellayout(layp, (rflp == NULL) ? 1 : 0); 5439 layp = NULL; 5440 } 5441 /* Try and get a Layout, if it is supported. */ 5442 if (rwaccess == NFSV4OPEN_ACCESSWRITE || 5443 (np->n_flag & NWRITEOPENED) != 0) 5444 iolaymode = NFSLAYOUTIOMODE_RW; 5445 else 5446 iolaymode = NFSLAYOUTIOMODE_READ; 5447 error = nfsrpc_getlayout(nmp, vp, np->n_fhp, iolaymode, 5448 NULL, &stateid, off, &layp, newcred, p); 5449 if (error != 0) { 5450 NFSLOCKNODE(np); 5451 np->n_flag |= NNOLAYOUT; 5452 NFSUNLOCKNODE(np); 5453 if (lckp != NULL) 5454 nfscl_lockderef(lckp); 5455 NFSFREECRED(newcred); 5456 if (layp != NULL) 5457 nfscl_rellayout(layp, 0); 5458 nfscl_relref(nmp); 5459 return (error); 5460 } 5461 } 5462 5463 /* 5464 * Loop around finding a layout that works for the first part of 5465 * this I/O operation, and then call the function that actually 5466 * does the RPC. 5467 */ 5468 eof = 0; 5469 len = (uint64_t)uiop->uio_resid; 5470 while (len > 0 && error == 0 && eof == 0) { 5471 off = uiop->uio_offset; 5472 error = nfscl_findlayoutforio(layp, off, rwaccess, &rflp); 5473 if (error == 0) { 5474 oresid = xfer = (uint64_t)uiop->uio_resid; 5475 if (xfer > (rflp->nfsfl_end - rflp->nfsfl_off)) 5476 xfer = rflp->nfsfl_end - rflp->nfsfl_off; 5477 dip = nfscl_getdevinfo(nmp->nm_clp, rflp->nfsfl_dev, 5478 rflp->nfsfl_devp); 5479 if (dip != NULL) { 5480 error = nfscl_doflayoutio(vp, uiop, iomode, 5481 must_commit, &eof, &stateid, rwaccess, dip, 5482 layp, rflp, off, xfer, newcred, p); 5483 nfscl_reldevinfo(dip); 5484 lastbyte = off + xfer - 1; 5485 if (error == 0) { 5486 NFSLOCKCLSTATE(); 5487 if (lastbyte > layp->nfsly_lastbyte) 5488 layp->nfsly_lastbyte = lastbyte; 5489 NFSUNLOCKCLSTATE(); 5490 } 5491 } else 5492 error = EIO; 5493 if (error == 0) 5494 len -= (oresid - (uint64_t)uiop->uio_resid); 5495 } 5496 } 5497 if (lckp != NULL) 5498 nfscl_lockderef(lckp); 5499 NFSFREECRED(newcred); 5500 nfscl_rellayout(layp, 0); 5501 nfscl_relref(nmp); 5502 return (error); 5503 } 5504 5505 /* 5506 * Find a file layout that will handle the first bytes of the requested 5507 * range and return the information from it needed to to the I/O operation. 5508 */ 5509 int 5510 nfscl_findlayoutforio(struct nfscllayout *lyp, uint64_t off, uint32_t rwaccess, 5511 struct nfsclflayout **retflpp) 5512 { 5513 struct nfsclflayout *flp, *nflp, *rflp; 5514 uint32_t rw; 5515 5516 rflp = NULL; 5517 rw = rwaccess; 5518 /* For reading, do the Read list first and then the Write list. */ 5519 do { 5520 if (rw == NFSV4OPEN_ACCESSREAD) 5521 flp = LIST_FIRST(&lyp->nfsly_flayread); 5522 else 5523 flp = LIST_FIRST(&lyp->nfsly_flayrw); 5524 while (flp != NULL) { 5525 nflp = LIST_NEXT(flp, nfsfl_list); 5526 if (flp->nfsfl_off > off) 5527 break; 5528 if (flp->nfsfl_end > off && 5529 (rflp == NULL || rflp->nfsfl_end < flp->nfsfl_end)) 5530 rflp = flp; 5531 flp = nflp; 5532 } 5533 if (rw == NFSV4OPEN_ACCESSREAD) 5534 rw = NFSV4OPEN_ACCESSWRITE; 5535 else 5536 rw = 0; 5537 } while (rw != 0); 5538 if (rflp != NULL) { 5539 /* This one covers the most bytes starting at off. */ 5540 *retflpp = rflp; 5541 return (0); 5542 } 5543 return (EIO); 5544 } 5545 5546 /* 5547 * Do I/O using an NFSv4.1 file layout. 5548 */ 5549 static int 5550 nfscl_doflayoutio(vnode_t vp, struct uio *uiop, int *iomode, int *must_commit, 5551 int *eofp, nfsv4stateid_t *stateidp, int rwflag, struct nfscldevinfo *dp, 5552 struct nfscllayout *lyp, struct nfsclflayout *flp, uint64_t off, 5553 uint64_t len, struct ucred *cred, NFSPROC_T *p) 5554 { 5555 uint64_t io_off, rel_off, stripe_unit_size, transfer, xfer; 5556 int commit_thru_mds, error = 0, stripe_index, stripe_pos; 5557 struct nfsnode *np; 5558 struct nfsfh *fhp; 5559 struct nfsclds **dspp; 5560 5561 np = VTONFS(vp); 5562 rel_off = off - flp->nfsfl_patoff; 5563 stripe_unit_size = (flp->nfsfl_util >> 6) & 0x3ffffff; 5564 stripe_pos = (rel_off / stripe_unit_size + flp->nfsfl_stripe1) % 5565 dp->nfsdi_stripecnt; 5566 transfer = stripe_unit_size - (rel_off % stripe_unit_size); 5567 5568 /* Loop around, doing I/O for each stripe unit. */ 5569 while (len > 0 && error == 0) { 5570 stripe_index = nfsfldi_stripeindex(dp, stripe_pos); 5571 dspp = nfsfldi_addr(dp, stripe_index); 5572 if (len > transfer) 5573 xfer = transfer; 5574 else 5575 xfer = len; 5576 if ((flp->nfsfl_util & NFSFLAYUTIL_DENSE) != 0) { 5577 /* Dense layout. */ 5578 if (stripe_pos >= flp->nfsfl_fhcnt) 5579 return (EIO); 5580 fhp = flp->nfsfl_fh[stripe_pos]; 5581 io_off = (rel_off / (stripe_unit_size * 5582 dp->nfsdi_stripecnt)) * stripe_unit_size + 5583 rel_off % stripe_unit_size; 5584 } else { 5585 /* Sparse layout. */ 5586 if (flp->nfsfl_fhcnt > 1) { 5587 if (stripe_index >= flp->nfsfl_fhcnt) 5588 return (EIO); 5589 fhp = flp->nfsfl_fh[stripe_index]; 5590 } else if (flp->nfsfl_fhcnt == 1) 5591 fhp = flp->nfsfl_fh[0]; 5592 else 5593 fhp = np->n_fhp; 5594 io_off = off; 5595 } 5596 if ((flp->nfsfl_util & NFSFLAYUTIL_COMMIT_THRU_MDS) != 0) 5597 commit_thru_mds = 1; 5598 else 5599 commit_thru_mds = 0; 5600 if (rwflag == FREAD) 5601 error = nfsrpc_readds(vp, uiop, stateidp, eofp, *dspp, 5602 io_off, xfer, fhp, cred, p); 5603 else { 5604 error = nfsrpc_writeds(vp, uiop, iomode, must_commit, 5605 stateidp, *dspp, io_off, xfer, fhp, commit_thru_mds, 5606 cred, p); 5607 if (error == 0) { 5608 NFSLOCKCLSTATE(); 5609 lyp->nfsly_flags |= NFSLY_WRITTEN; 5610 NFSUNLOCKCLSTATE(); 5611 } 5612 } 5613 if (error == 0) { 5614 transfer = stripe_unit_size; 5615 stripe_pos = (stripe_pos + 1) % dp->nfsdi_stripecnt; 5616 len -= xfer; 5617 off += xfer; 5618 } 5619 } 5620 return (error); 5621 } 5622 5623 /* 5624 * The actual read RPC done to a DS. 5625 */ 5626 static int 5627 nfsrpc_readds(vnode_t vp, struct uio *uiop, nfsv4stateid_t *stateidp, int *eofp, 5628 struct nfsclds *dsp, uint64_t io_off, int len, struct nfsfh *fhp, 5629 struct ucred *cred, NFSPROC_T *p) 5630 { 5631 uint32_t *tl; 5632 int error, retlen; 5633 struct nfsrv_descript nfsd; 5634 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 5635 struct nfsrv_descript *nd = &nfsd; 5636 struct nfssockreq *nrp; 5637 5638 nd->nd_mrep = NULL; 5639 nfscl_reqstart(nd, NFSPROC_READDS, nmp, fhp->nfh_fh, fhp->nfh_len, 5640 NULL, &dsp->nfsclds_sess); 5641 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSEQIDZERO); 5642 NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED * 3); 5643 txdr_hyper(io_off, tl); 5644 *(tl + 2) = txdr_unsigned(len); 5645 nrp = dsp->nfsclds_sockp; 5646 if (nrp == NULL) 5647 /* If NULL, use the MDS socket. */ 5648 nrp = &nmp->nm_sockreq; 5649 error = newnfs_request(nd, nmp, NULL, nrp, vp, p, cred, 5650 NFS_PROG, NFS_VER4, NULL, 1, NULL, &dsp->nfsclds_sess); 5651 if (error != 0) 5652 return (error); 5653 if (nd->nd_repstat != 0) { 5654 error = nd->nd_repstat; 5655 goto nfsmout; 5656 } 5657 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 5658 *eofp = fxdr_unsigned(int, *tl); 5659 NFSM_STRSIZ(retlen, len); 5660 error = nfsm_mbufuio(nd, uiop, retlen); 5661 nfsmout: 5662 if (nd->nd_mrep != NULL) 5663 mbuf_freem(nd->nd_mrep); 5664 return (error); 5665 } 5666 5667 /* 5668 * The actual write RPC done to a DS. 5669 */ 5670 static int 5671 nfsrpc_writeds(vnode_t vp, struct uio *uiop, int *iomode, int *must_commit, 5672 nfsv4stateid_t *stateidp, struct nfsclds *dsp, uint64_t io_off, int len, 5673 struct nfsfh *fhp, int commit_thru_mds, struct ucred *cred, NFSPROC_T *p) 5674 { 5675 uint32_t *tl; 5676 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 5677 int error, rlen, commit, committed = NFSWRITE_FILESYNC; 5678 int32_t backup; 5679 struct nfsrv_descript nfsd; 5680 struct nfsrv_descript *nd = &nfsd; 5681 struct nfssockreq *nrp; 5682 5683 KASSERT(uiop->uio_iovcnt == 1, ("nfs: writerpc iovcnt > 1")); 5684 nd->nd_mrep = NULL; 5685 nfscl_reqstart(nd, NFSPROC_WRITEDS, nmp, fhp->nfh_fh, fhp->nfh_len, 5686 NULL, &dsp->nfsclds_sess); 5687 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSEQIDZERO); 5688 NFSM_BUILD(tl, uint32_t *, NFSX_HYPER + 2 * NFSX_UNSIGNED); 5689 txdr_hyper(io_off, tl); 5690 tl += 2; 5691 *tl++ = txdr_unsigned(*iomode); 5692 *tl = txdr_unsigned(len); 5693 nfsm_uiombuf(nd, uiop, len); 5694 nrp = dsp->nfsclds_sockp; 5695 if (nrp == NULL) 5696 /* If NULL, use the MDS socket. */ 5697 nrp = &nmp->nm_sockreq; 5698 error = newnfs_request(nd, nmp, NULL, nrp, vp, p, cred, 5699 NFS_PROG, NFS_VER4, NULL, 1, NULL, &dsp->nfsclds_sess); 5700 if (error != 0) 5701 return (error); 5702 if (nd->nd_repstat != 0) { 5703 /* 5704 * In case the rpc gets retried, roll 5705 * the uio fileds changed by nfsm_uiombuf() 5706 * back. 5707 */ 5708 uiop->uio_offset -= len; 5709 uio_uio_resid_add(uiop, len); 5710 uio_iov_base_add(uiop, -len); 5711 uio_iov_len_add(uiop, len); 5712 error = nd->nd_repstat; 5713 } else { 5714 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED + NFSX_VERF); 5715 rlen = fxdr_unsigned(int, *tl++); 5716 if (rlen == 0) { 5717 error = NFSERR_IO; 5718 goto nfsmout; 5719 } else if (rlen < len) { 5720 backup = len - rlen; 5721 uio_iov_base_add(uiop, -(backup)); 5722 uio_iov_len_add(uiop, backup); 5723 uiop->uio_offset -= backup; 5724 uio_uio_resid_add(uiop, backup); 5725 len = rlen; 5726 } 5727 commit = fxdr_unsigned(int, *tl++); 5728 5729 /* 5730 * Return the lowest committment level 5731 * obtained by any of the RPCs. 5732 */ 5733 if (committed == NFSWRITE_FILESYNC) 5734 committed = commit; 5735 else if (committed == NFSWRITE_DATASYNC && 5736 commit == NFSWRITE_UNSTABLE) 5737 committed = commit; 5738 if (commit_thru_mds != 0) { 5739 NFSLOCKMNT(nmp); 5740 if (!NFSHASWRITEVERF(nmp)) { 5741 NFSBCOPY(tl, nmp->nm_verf, NFSX_VERF); 5742 NFSSETWRITEVERF(nmp); 5743 } else if (NFSBCMP(tl, nmp->nm_verf, NFSX_VERF)) { 5744 *must_commit = 1; 5745 NFSBCOPY(tl, nmp->nm_verf, NFSX_VERF); 5746 } 5747 NFSUNLOCKMNT(nmp); 5748 } else { 5749 NFSLOCKDS(dsp); 5750 if ((dsp->nfsclds_flags & NFSCLDS_HASWRITEVERF) == 0) { 5751 NFSBCOPY(tl, dsp->nfsclds_verf, NFSX_VERF); 5752 dsp->nfsclds_flags |= NFSCLDS_HASWRITEVERF; 5753 } else if (NFSBCMP(tl, dsp->nfsclds_verf, NFSX_VERF)) { 5754 *must_commit = 1; 5755 NFSBCOPY(tl, dsp->nfsclds_verf, NFSX_VERF); 5756 } 5757 NFSUNLOCKDS(dsp); 5758 } 5759 } 5760 nfsmout: 5761 if (nd->nd_mrep != NULL) 5762 mbuf_freem(nd->nd_mrep); 5763 *iomode = committed; 5764 if (nd->nd_repstat != 0 && error == 0) 5765 error = nd->nd_repstat; 5766 return (error); 5767 } 5768 5769 /* 5770 * Free up the nfsclds structure. 5771 */ 5772 void 5773 nfscl_freenfsclds(struct nfsclds *dsp) 5774 { 5775 int i; 5776 5777 if (dsp == NULL) 5778 return; 5779 if (dsp->nfsclds_sockp != NULL) { 5780 NFSFREECRED(dsp->nfsclds_sockp->nr_cred); 5781 NFSFREEMUTEX(&dsp->nfsclds_sockp->nr_mtx); 5782 free(dsp->nfsclds_sockp->nr_nam, M_SONAME); 5783 free(dsp->nfsclds_sockp, M_NFSSOCKREQ); 5784 } 5785 NFSFREEMUTEX(&dsp->nfsclds_mtx); 5786 NFSFREEMUTEX(&dsp->nfsclds_sess.nfsess_mtx); 5787 for (i = 0; i < NFSV4_CBSLOTS; i++) { 5788 if (dsp->nfsclds_sess.nfsess_cbslots[i].nfssl_reply != NULL) 5789 m_freem( 5790 dsp->nfsclds_sess.nfsess_cbslots[i].nfssl_reply); 5791 } 5792 free(dsp, M_NFSCLDS); 5793 } 5794 5795 static enum nfsclds_state 5796 nfscl_getsameserver(struct nfsmount *nmp, struct nfsclds *newdsp, 5797 struct nfsclds **retdspp) 5798 { 5799 struct nfsclds *dsp, *cur_dsp; 5800 5801 /* 5802 * Search the list of nfsclds structures for one with the same 5803 * server. 5804 */ 5805 cur_dsp = NULL; 5806 TAILQ_FOREACH(dsp, &nmp->nm_sess, nfsclds_list) { 5807 if (dsp->nfsclds_servownlen == newdsp->nfsclds_servownlen && 5808 dsp->nfsclds_servownlen != 0 && 5809 !NFSBCMP(dsp->nfsclds_serverown, newdsp->nfsclds_serverown, 5810 dsp->nfsclds_servownlen)) { 5811 NFSCL_DEBUG(4, "fnd same fdsp=%p dsp=%p flg=0x%x\n", 5812 TAILQ_FIRST(&nmp->nm_sess), dsp, 5813 dsp->nfsclds_flags); 5814 /* Server major id matches. */ 5815 if ((dsp->nfsclds_flags & NFSCLDS_DS) != 0) { 5816 *retdspp = dsp; 5817 return (NFSDSP_USETHISSESSION); 5818 } 5819 5820 /* 5821 * Note the first match, so it can be used for 5822 * sequence'ing new sessions. 5823 */ 5824 if (cur_dsp == NULL) 5825 cur_dsp = dsp; 5826 } 5827 } 5828 if (cur_dsp != NULL) { 5829 *retdspp = cur_dsp; 5830 return (NFSDSP_SEQTHISSESSION); 5831 } 5832 return (NFSDSP_NOTFOUND); 5833 } 5834 5835 #ifdef notyet 5836 /* 5837 * NFS commit rpc to a DS. 5838 */ 5839 static int 5840 nfsrpc_commitds(vnode_t vp, uint64_t offset, int cnt, struct nfsclds *dsp, 5841 struct nfsfh *fhp, struct ucred *cred, NFSPROC_T *p, void *stuff) 5842 { 5843 uint32_t *tl; 5844 struct nfsrv_descript nfsd, *nd = &nfsd; 5845 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 5846 struct nfssockreq *nrp; 5847 int error; 5848 5849 nfscl_reqstart(nd, NFSPROC_COMMITDS, nmp, fhp->nfh_fh, fhp->nfh_len, 5850 NULL, &dsp->nfsclds_sess); 5851 NFSM_BUILD(tl, uint32_t *, NFSX_HYPER + NFSX_UNSIGNED); 5852 txdr_hyper(offset, tl); 5853 tl += 2; 5854 *tl = txdr_unsigned(cnt); 5855 nrp = dsp->nfsclds_sockp; 5856 if (nrp == NULL) 5857 /* If NULL, use the MDS socket. */ 5858 nrp = &nmp->nm_sockreq; 5859 error = newnfs_request(nd, nmp, NULL, nrp, vp, p, cred, 5860 NFS_PROG, NFS_VER4, NULL, 1, NULL, &dsp->nfsclds_sess); 5861 if (error) 5862 return (error); 5863 if (nd->nd_repstat == 0) { 5864 NFSM_DISSECT(tl, u_int32_t *, NFSX_VERF); 5865 NFSLOCKDS(dsp); 5866 if (NFSBCMP(tl, dsp->nfsclds_verf, NFSX_VERF)) { 5867 NFSBCOPY(tl, dsp->nfsclds_verf, NFSX_VERF); 5868 error = NFSERR_STALEWRITEVERF; 5869 } 5870 NFSUNLOCKDS(dsp); 5871 } 5872 nfsmout: 5873 if (error == 0 && nd->nd_repstat != 0) 5874 error = nd->nd_repstat; 5875 mbuf_freem(nd->nd_mrep); 5876 return (error); 5877 } 5878 #endif 5879 5880
Indexes created Mon Sep 22 13:09:51 GMT 2025