nfs_clrpcops.c revision 265466
1/*- 2 * Copyright (c) 1989, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley by 6 * Rick Macklem at The University of Guelph. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 4. Neither the name of the University nor the names of its contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 * 32 */ 33 34#include <sys/cdefs.h> 35__FBSDID("$FreeBSD: stable/10/sys/fs/nfsclient/nfs_clrpcops.c 265466 2014-05-06 21:47:43Z rmacklem $"); 36 37/* 38 * Rpc op calls, generally called from the vnode op calls or through the 39 * buffer cache, for NFS v2, 3 and 4. 40 * These do not normally make any changes to vnode arguments or use 41 * structures that might change between the VFS variants. The returned 42 * arguments are all at the end, after the NFSPROC_T *p one. 43 */ 44 45#ifndef APPLEKEXT 46#include "opt_inet6.h" 47 48#include <fs/nfs/nfsport.h> 49 50/* 51 * Global variables 52 */ 53extern int nfs_numnfscbd; 54extern struct timeval nfsboottime; 55extern u_int32_t newnfs_false, newnfs_true; 56extern nfstype nfsv34_type[9]; 57extern int nfsrv_useacl; 58extern char nfsv4_callbackaddr[INET6_ADDRSTRLEN]; 59extern int nfscl_debuglevel; 60NFSCLSTATEMUTEX; 61int nfstest_outofseq = 0; 62int nfscl_assumeposixlocks = 1; 63int nfscl_enablecallb = 0; 64short nfsv4_cbport = NFSV4_CBPORT; 65int nfstest_openallsetattr = 0; 66#endif /* !APPLEKEXT */ 67 68#define DIRHDSIZ (sizeof (struct dirent) - (MAXNAMLEN + 1)) 69 70/* 71 * nfscl_getsameserver() can return one of three values: 72 * NFSDSP_USETHISSESSION - Use this session for the DS. 73 * NFSDSP_SEQTHISSESSION - Use the nfsclds_sequence field of this dsp for new 74 * session. 75 * NFSDSP_NOTFOUND - No matching server was found. 76 */ 77enum nfsclds_state { 78 NFSDSP_USETHISSESSION = 0, 79 NFSDSP_SEQTHISSESSION = 1, 80 NFSDSP_NOTFOUND = 2, 81}; 82 83static int nfsrpc_setattrrpc(vnode_t , struct vattr *, nfsv4stateid_t *, 84 struct ucred *, NFSPROC_T *, struct nfsvattr *, int *, void *); 85static int nfsrpc_readrpc(vnode_t , struct uio *, struct ucred *, 86 nfsv4stateid_t *, NFSPROC_T *, struct nfsvattr *, int *, void *); 87static int nfsrpc_writerpc(vnode_t , struct uio *, int *, int *, 88 struct ucred *, nfsv4stateid_t *, NFSPROC_T *, struct nfsvattr *, int *, 89 void *); 90static int nfsrpc_createv23(vnode_t , char *, int, struct vattr *, 91 nfsquad_t, int, struct ucred *, NFSPROC_T *, struct nfsvattr *, 92 struct nfsvattr *, struct nfsfh **, int *, int *, void *); 93static int nfsrpc_createv4(vnode_t , char *, int, struct vattr *, 94 nfsquad_t, int, struct nfsclowner *, struct nfscldeleg **, struct ucred *, 95 NFSPROC_T *, struct nfsvattr *, struct nfsvattr *, struct nfsfh **, int *, 96 int *, void *, int *); 97static int nfsrpc_locku(struct nfsrv_descript *, struct nfsmount *, 98 struct nfscllockowner *, u_int64_t, u_int64_t, 99 u_int32_t, struct ucred *, NFSPROC_T *, int); 100static int nfsrpc_setaclrpc(vnode_t, struct ucred *, NFSPROC_T *, 101 struct acl *, nfsv4stateid_t *, void *); 102static int nfsrpc_getlayout(struct nfsmount *, vnode_t, struct nfsfh *, int, 103 uint32_t *, nfsv4stateid_t *, uint64_t, struct nfscllayout **, 104 struct ucred *, NFSPROC_T *); 105static int nfsrpc_fillsa(struct nfsmount *, struct sockaddr_storage *, 106 struct nfsclds **, NFSPROC_T *); 107static void nfscl_initsessionslots(struct nfsclsession *); 108static int nfscl_doflayoutio(vnode_t, struct uio *, int *, int *, int *, 109 nfsv4stateid_t *, int, struct nfscldevinfo *, struct nfscllayout *, 110 struct nfsclflayout *, uint64_t, uint64_t, struct ucred *, NFSPROC_T *); 111static int nfsrpc_readds(vnode_t, struct uio *, nfsv4stateid_t *, int *, 112 struct nfsclds *, uint64_t, int, struct nfsfh *, struct ucred *, 113 NFSPROC_T *); 114static int nfsrpc_writeds(vnode_t, struct uio *, int *, int *, 115 nfsv4stateid_t *, struct nfsclds *, uint64_t, int, 116 struct nfsfh *, int, struct ucred *, NFSPROC_T *); 117static enum nfsclds_state nfscl_getsameserver(struct nfsmount *, 118 struct nfsclds *, struct nfsclds **); 119#ifdef notyet 120static int nfsrpc_commitds(vnode_t, uint64_t, int, struct nfsclds *, 121 struct nfsfh *, struct ucred *, NFSPROC_T *, void *); 122#endif 123 124/* 125 * nfs null call from vfs. 126 */ 127APPLESTATIC int 128nfsrpc_null(vnode_t vp, struct ucred *cred, NFSPROC_T *p) 129{ 130 int error; 131 struct nfsrv_descript nfsd, *nd = &nfsd; 132 133 NFSCL_REQSTART(nd, NFSPROC_NULL, vp); 134 error = nfscl_request(nd, vp, p, cred, NULL); 135 if (nd->nd_repstat && !error) 136 error = nd->nd_repstat; 137 mbuf_freem(nd->nd_mrep); 138 return (error); 139} 140 141/* 142 * nfs access rpc op. 143 * For nfs version 3 and 4, use the access rpc to check accessibility. If file 144 * modes are changed on the server, accesses might still fail later. 145 */ 146APPLESTATIC int 147nfsrpc_access(vnode_t vp, int acmode, struct ucred *cred, 148 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp) 149{ 150 int error; 151 u_int32_t mode, rmode; 152 153 if (acmode & VREAD) 154 mode = NFSACCESS_READ; 155 else 156 mode = 0; 157 if (vnode_vtype(vp) == VDIR) { 158 if (acmode & VWRITE) 159 mode |= (NFSACCESS_MODIFY | NFSACCESS_EXTEND | 160 NFSACCESS_DELETE); 161 if (acmode & VEXEC) 162 mode |= NFSACCESS_LOOKUP; 163 } else { 164 if (acmode & VWRITE) 165 mode |= (NFSACCESS_MODIFY | NFSACCESS_EXTEND); 166 if (acmode & VEXEC) 167 mode |= NFSACCESS_EXECUTE; 168 } 169 170 /* 171 * Now, just call nfsrpc_accessrpc() to do the actual RPC. 172 */ 173 error = nfsrpc_accessrpc(vp, mode, cred, p, nap, attrflagp, &rmode, 174 NULL); 175 176 /* 177 * The NFS V3 spec does not clarify whether or not 178 * the returned access bits can be a superset of 179 * the ones requested, so... 180 */ 181 if (!error && (rmode & mode) != mode) 182 error = EACCES; 183 return (error); 184} 185 186/* 187 * The actual rpc, separated out for Darwin. 188 */ 189APPLESTATIC int 190nfsrpc_accessrpc(vnode_t vp, u_int32_t mode, struct ucred *cred, 191 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, u_int32_t *rmodep, 192 void *stuff) 193{ 194 u_int32_t *tl; 195 u_int32_t supported, rmode; 196 int error; 197 struct nfsrv_descript nfsd, *nd = &nfsd; 198 nfsattrbit_t attrbits; 199 200 *attrflagp = 0; 201 supported = mode; 202 NFSCL_REQSTART(nd, NFSPROC_ACCESS, vp); 203 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 204 *tl = txdr_unsigned(mode); 205 if (nd->nd_flag & ND_NFSV4) { 206 /* 207 * And do a Getattr op. 208 */ 209 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 210 *tl = txdr_unsigned(NFSV4OP_GETATTR); 211 NFSGETATTR_ATTRBIT(&attrbits); 212 (void) nfsrv_putattrbit(nd, &attrbits); 213 } 214 error = nfscl_request(nd, vp, p, cred, stuff); 215 if (error) 216 return (error); 217 if (nd->nd_flag & ND_NFSV3) { 218 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 219 if (error) 220 goto nfsmout; 221 } 222 if (!nd->nd_repstat) { 223 if (nd->nd_flag & ND_NFSV4) { 224 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 225 supported = fxdr_unsigned(u_int32_t, *tl++); 226 } else { 227 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 228 } 229 rmode = fxdr_unsigned(u_int32_t, *tl); 230 if (nd->nd_flag & ND_NFSV4) 231 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 232 233 /* 234 * It's not obvious what should be done about 235 * unsupported access modes. For now, be paranoid 236 * and clear the unsupported ones. 237 */ 238 rmode &= supported; 239 *rmodep = rmode; 240 } else 241 error = nd->nd_repstat; 242nfsmout: 243 mbuf_freem(nd->nd_mrep); 244 return (error); 245} 246 247/* 248 * nfs open rpc 249 */ 250APPLESTATIC int 251nfsrpc_open(vnode_t vp, int amode, struct ucred *cred, NFSPROC_T *p) 252{ 253 struct nfsclopen *op; 254 struct nfscldeleg *dp; 255 struct nfsfh *nfhp; 256 struct nfsnode *np = VTONFS(vp); 257 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 258 u_int32_t mode, clidrev; 259 int ret, newone, error, expireret = 0, retrycnt; 260 261 /* 262 * For NFSv4, Open Ops are only done on Regular Files. 263 */ 264 if (vnode_vtype(vp) != VREG) 265 return (0); 266 mode = 0; 267 if (amode & FREAD) 268 mode |= NFSV4OPEN_ACCESSREAD; 269 if (amode & FWRITE) 270 mode |= NFSV4OPEN_ACCESSWRITE; 271 nfhp = np->n_fhp; 272 273 retrycnt = 0; 274#ifdef notdef 275{ char name[100]; int namel; 276namel = (np->n_v4->n4_namelen < 100) ? np->n_v4->n4_namelen : 99; 277bcopy(NFS4NODENAME(np->n_v4), name, namel); 278name[namel] = '\0'; 279printf("rpcopen p=0x%x name=%s",p->p_pid,name); 280if (nfhp->nfh_len > 0) printf(" fh=0x%x\n",nfhp->nfh_fh[12]); 281else printf(" fhl=0\n"); 282} 283#endif 284 do { 285 dp = NULL; 286 error = nfscl_open(vp, nfhp->nfh_fh, nfhp->nfh_len, mode, 1, 287 cred, p, NULL, &op, &newone, &ret, 1); 288 if (error) { 289 return (error); 290 } 291 if (nmp->nm_clp != NULL) 292 clidrev = nmp->nm_clp->nfsc_clientidrev; 293 else 294 clidrev = 0; 295 if (ret == NFSCLOPEN_DOOPEN) { 296 if (np->n_v4 != NULL) { 297 error = nfsrpc_openrpc(nmp, vp, np->n_v4->n4_data, 298 np->n_v4->n4_fhlen, np->n_fhp->nfh_fh, 299 np->n_fhp->nfh_len, mode, op, 300 NFS4NODENAME(np->n_v4), np->n_v4->n4_namelen, &dp, 301 0, 0x0, cred, p, 0, 0); 302 if (dp != NULL) { 303#ifdef APPLE 304 OSBitAndAtomic((int32_t)~NDELEGMOD, (UInt32 *)&np->n_flag); 305#else 306 NFSLOCKNODE(np); 307 np->n_flag &= ~NDELEGMOD; 308 /* 309 * Invalidate the attribute cache, so that 310 * attributes that pre-date the issue of a 311 * delegation are not cached, since the 312 * cached attributes will remain valid while 313 * the delegation is held. 314 */ 315 NFSINVALATTRCACHE(np); 316 NFSUNLOCKNODE(np); 317#endif 318 (void) nfscl_deleg(nmp->nm_mountp, 319 op->nfso_own->nfsow_clp, 320 nfhp->nfh_fh, nfhp->nfh_len, cred, p, &dp); 321 } 322 } else { 323 error = EIO; 324 } 325 newnfs_copyincred(cred, &op->nfso_cred); 326 } else if (ret == NFSCLOPEN_SETCRED) 327 /* 328 * This is a new local open on a delegation. It needs 329 * to have credentials so that an open can be done 330 * against the server during recovery. 331 */ 332 newnfs_copyincred(cred, &op->nfso_cred); 333 334 /* 335 * nfso_opencnt is the count of how many VOP_OPEN()s have 336 * been done on this Open successfully and a VOP_CLOSE() 337 * is expected for each of these. 338 * If error is non-zero, don't increment it, since the Open 339 * hasn't succeeded yet. 340 */ 341 if (!error) 342 op->nfso_opencnt++; 343 nfscl_openrelease(op, error, newone); 344 if (error == NFSERR_GRACE || error == NFSERR_STALECLIENTID || 345 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 346 error == NFSERR_BADSESSION) { 347 (void) nfs_catnap(PZERO, error, "nfs_open"); 348 } else if ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) 349 && clidrev != 0) { 350 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p); 351 retrycnt++; 352 } 353 } while (error == NFSERR_GRACE || error == NFSERR_STALECLIENTID || 354 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 355 error == NFSERR_BADSESSION || 356 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) && 357 expireret == 0 && clidrev != 0 && retrycnt < 4)); 358 if (error && retrycnt >= 4) 359 error = EIO; 360 return (error); 361} 362 363/* 364 * the actual open rpc 365 */ 366APPLESTATIC int 367nfsrpc_openrpc(struct nfsmount *nmp, vnode_t vp, u_int8_t *nfhp, int fhlen, 368 u_int8_t *newfhp, int newfhlen, u_int32_t mode, struct nfsclopen *op, 369 u_int8_t *name, int namelen, struct nfscldeleg **dpp, 370 int reclaim, u_int32_t delegtype, struct ucred *cred, NFSPROC_T *p, 371 int syscred, int recursed) 372{ 373 u_int32_t *tl; 374 struct nfsrv_descript nfsd, *nd = &nfsd; 375 struct nfscldeleg *dp, *ndp = NULL; 376 struct nfsvattr nfsva; 377 u_int32_t rflags, deleg; 378 nfsattrbit_t attrbits; 379 int error, ret, acesize, limitby; 380 381 dp = *dpp; 382 *dpp = NULL; 383 nfscl_reqstart(nd, NFSPROC_OPEN, nmp, nfhp, fhlen, NULL, NULL); 384 NFSM_BUILD(tl, u_int32_t *, 5 * NFSX_UNSIGNED); 385 *tl++ = txdr_unsigned(op->nfso_own->nfsow_seqid); 386 *tl++ = txdr_unsigned(mode & NFSV4OPEN_ACCESSBOTH); 387 *tl++ = txdr_unsigned((mode >> NFSLCK_SHIFT) & NFSV4OPEN_DENYBOTH); 388 *tl++ = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[0]; 389 *tl = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[1]; 390 (void) nfsm_strtom(nd, op->nfso_own->nfsow_owner, NFSV4CL_LOCKNAMELEN); 391 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 392 *tl++ = txdr_unsigned(NFSV4OPEN_NOCREATE); 393 if (reclaim) { 394 *tl = txdr_unsigned(NFSV4OPEN_CLAIMPREVIOUS); 395 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 396 *tl = txdr_unsigned(delegtype); 397 } else { 398 if (dp != NULL) { 399 *tl = txdr_unsigned(NFSV4OPEN_CLAIMDELEGATECUR); 400 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID); 401 if (NFSHASNFSV4N(nmp)) 402 *tl++ = 0; 403 else 404 *tl++ = dp->nfsdl_stateid.seqid; 405 *tl++ = dp->nfsdl_stateid.other[0]; 406 *tl++ = dp->nfsdl_stateid.other[1]; 407 *tl = dp->nfsdl_stateid.other[2]; 408 } else { 409 *tl = txdr_unsigned(NFSV4OPEN_CLAIMNULL); 410 } 411 (void) nfsm_strtom(nd, name, namelen); 412 } 413 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 414 *tl = txdr_unsigned(NFSV4OP_GETATTR); 415 NFSZERO_ATTRBIT(&attrbits); 416 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_CHANGE); 417 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_TIMEMODIFY); 418 (void) nfsrv_putattrbit(nd, &attrbits); 419 if (syscred) 420 nd->nd_flag |= ND_USEGSSNAME; 421 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, vp, p, cred, 422 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 423 if (error) 424 return (error); 425 NFSCL_INCRSEQID(op->nfso_own->nfsow_seqid, nd); 426 if (!nd->nd_repstat) { 427 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID + 428 6 * NFSX_UNSIGNED); 429 op->nfso_stateid.seqid = *tl++; 430 op->nfso_stateid.other[0] = *tl++; 431 op->nfso_stateid.other[1] = *tl++; 432 op->nfso_stateid.other[2] = *tl; 433 rflags = fxdr_unsigned(u_int32_t, *(tl + 6)); 434 error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL); 435 if (error) 436 goto nfsmout; 437 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 438 deleg = fxdr_unsigned(u_int32_t, *tl); 439 if (deleg == NFSV4OPEN_DELEGATEREAD || 440 deleg == NFSV4OPEN_DELEGATEWRITE) { 441 if (!(op->nfso_own->nfsow_clp->nfsc_flags & 442 NFSCLFLAGS_FIRSTDELEG)) 443 op->nfso_own->nfsow_clp->nfsc_flags |= 444 (NFSCLFLAGS_FIRSTDELEG | NFSCLFLAGS_GOTDELEG); 445 MALLOC(ndp, struct nfscldeleg *, 446 sizeof (struct nfscldeleg) + newfhlen, 447 M_NFSCLDELEG, M_WAITOK); 448 LIST_INIT(&ndp->nfsdl_owner); 449 LIST_INIT(&ndp->nfsdl_lock); 450 ndp->nfsdl_clp = op->nfso_own->nfsow_clp; 451 ndp->nfsdl_fhlen = newfhlen; 452 NFSBCOPY(newfhp, ndp->nfsdl_fh, newfhlen); 453 newnfs_copyincred(cred, &ndp->nfsdl_cred); 454 nfscl_lockinit(&ndp->nfsdl_rwlock); 455 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID + 456 NFSX_UNSIGNED); 457 ndp->nfsdl_stateid.seqid = *tl++; 458 ndp->nfsdl_stateid.other[0] = *tl++; 459 ndp->nfsdl_stateid.other[1] = *tl++; 460 ndp->nfsdl_stateid.other[2] = *tl++; 461 ret = fxdr_unsigned(int, *tl); 462 if (deleg == NFSV4OPEN_DELEGATEWRITE) { 463 ndp->nfsdl_flags = NFSCLDL_WRITE; 464 /* 465 * Indicates how much the file can grow. 466 */ 467 NFSM_DISSECT(tl, u_int32_t *, 468 3 * NFSX_UNSIGNED); 469 limitby = fxdr_unsigned(int, *tl++); 470 switch (limitby) { 471 case NFSV4OPEN_LIMITSIZE: 472 ndp->nfsdl_sizelimit = fxdr_hyper(tl); 473 break; 474 case NFSV4OPEN_LIMITBLOCKS: 475 ndp->nfsdl_sizelimit = 476 fxdr_unsigned(u_int64_t, *tl++); 477 ndp->nfsdl_sizelimit *= 478 fxdr_unsigned(u_int64_t, *tl); 479 break; 480 default: 481 error = NFSERR_BADXDR; 482 goto nfsmout; 483 }; 484 } else { 485 ndp->nfsdl_flags = NFSCLDL_READ; 486 } 487 if (ret) 488 ndp->nfsdl_flags |= NFSCLDL_RECALL; 489 error = nfsrv_dissectace(nd, &ndp->nfsdl_ace, &ret, 490 &acesize, p); 491 if (error) 492 goto nfsmout; 493 } else if (deleg != NFSV4OPEN_DELEGATENONE) { 494 error = NFSERR_BADXDR; 495 goto nfsmout; 496 } 497 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 498 error = nfsv4_loadattr(nd, NULL, &nfsva, NULL, 499 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0, 500 NULL, NULL, NULL, p, cred); 501 if (error) 502 goto nfsmout; 503 if (ndp != NULL) { 504 ndp->nfsdl_change = nfsva.na_filerev; 505 ndp->nfsdl_modtime = nfsva.na_mtime; 506 ndp->nfsdl_flags |= NFSCLDL_MODTIMESET; 507 } 508 if (!reclaim && (rflags & NFSV4OPEN_RESULTCONFIRM)) { 509 do { 510 ret = nfsrpc_openconfirm(vp, newfhp, newfhlen, op, 511 cred, p); 512 if (ret == NFSERR_DELAY) 513 (void) nfs_catnap(PZERO, ret, "nfs_open"); 514 } while (ret == NFSERR_DELAY); 515 error = ret; 516 } 517 if ((rflags & NFSV4OPEN_LOCKTYPEPOSIX) || 518 nfscl_assumeposixlocks) 519 op->nfso_posixlock = 1; 520 else 521 op->nfso_posixlock = 0; 522 523 /* 524 * If the server is handing out delegations, but we didn't 525 * get one because an OpenConfirm was required, try the 526 * Open again, to get a delegation. This is a harmless no-op, 527 * from a server's point of view. 528 */ 529 if (!reclaim && (rflags & NFSV4OPEN_RESULTCONFIRM) && 530 (op->nfso_own->nfsow_clp->nfsc_flags & NFSCLFLAGS_GOTDELEG) 531 && !error && dp == NULL && ndp == NULL && !recursed) { 532 do { 533 ret = nfsrpc_openrpc(nmp, vp, nfhp, fhlen, newfhp, 534 newfhlen, mode, op, name, namelen, &ndp, 0, 0x0, 535 cred, p, syscred, 1); 536 if (ret == NFSERR_DELAY) 537 (void) nfs_catnap(PZERO, ret, "nfs_open2"); 538 } while (ret == NFSERR_DELAY); 539 if (ret) { 540 if (ndp != NULL) 541 FREE((caddr_t)ndp, M_NFSCLDELEG); 542 if (ret == NFSERR_STALECLIENTID || 543 ret == NFSERR_STALEDONTRECOVER || 544 ret == NFSERR_BADSESSION) 545 error = ret; 546 } 547 } 548 } 549 if (nd->nd_repstat != 0 && error == 0) 550 error = nd->nd_repstat; 551 if (error == NFSERR_STALECLIENTID || error == NFSERR_BADSESSION) 552 nfscl_initiate_recovery(op->nfso_own->nfsow_clp); 553nfsmout: 554 if (!error) 555 *dpp = ndp; 556 else if (ndp != NULL) 557 FREE((caddr_t)ndp, M_NFSCLDELEG); 558 mbuf_freem(nd->nd_mrep); 559 return (error); 560} 561 562/* 563 * open downgrade rpc 564 */ 565APPLESTATIC int 566nfsrpc_opendowngrade(vnode_t vp, u_int32_t mode, struct nfsclopen *op, 567 struct ucred *cred, NFSPROC_T *p) 568{ 569 u_int32_t *tl; 570 struct nfsrv_descript nfsd, *nd = &nfsd; 571 int error; 572 573 NFSCL_REQSTART(nd, NFSPROC_OPENDOWNGRADE, vp); 574 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID + 3 * NFSX_UNSIGNED); 575 if (NFSHASNFSV4N(VFSTONFS(vnode_mount(vp)))) 576 *tl++ = 0; 577 else 578 *tl++ = op->nfso_stateid.seqid; 579 *tl++ = op->nfso_stateid.other[0]; 580 *tl++ = op->nfso_stateid.other[1]; 581 *tl++ = op->nfso_stateid.other[2]; 582 *tl++ = txdr_unsigned(op->nfso_own->nfsow_seqid); 583 *tl++ = txdr_unsigned(mode & NFSV4OPEN_ACCESSBOTH); 584 *tl = txdr_unsigned((mode >> NFSLCK_SHIFT) & NFSV4OPEN_DENYBOTH); 585 error = nfscl_request(nd, vp, p, cred, NULL); 586 if (error) 587 return (error); 588 NFSCL_INCRSEQID(op->nfso_own->nfsow_seqid, nd); 589 if (!nd->nd_repstat) { 590 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID); 591 op->nfso_stateid.seqid = *tl++; 592 op->nfso_stateid.other[0] = *tl++; 593 op->nfso_stateid.other[1] = *tl++; 594 op->nfso_stateid.other[2] = *tl; 595 } 596 if (nd->nd_repstat && error == 0) 597 error = nd->nd_repstat; 598 if (error == NFSERR_STALESTATEID || error == NFSERR_BADSESSION) 599 nfscl_initiate_recovery(op->nfso_own->nfsow_clp); 600nfsmout: 601 mbuf_freem(nd->nd_mrep); 602 return (error); 603} 604 605/* 606 * V4 Close operation. 607 */ 608APPLESTATIC int 609nfsrpc_close(vnode_t vp, int doclose, NFSPROC_T *p) 610{ 611 struct nfsclclient *clp; 612 int error; 613 614 if (vnode_vtype(vp) != VREG) 615 return (0); 616 if (doclose) 617 error = nfscl_doclose(vp, &clp, p); 618 else 619 error = nfscl_getclose(vp, &clp); 620 if (error) 621 return (error); 622 623 nfscl_clientrelease(clp); 624 return (0); 625} 626 627/* 628 * Close the open. 629 */ 630APPLESTATIC void 631nfsrpc_doclose(struct nfsmount *nmp, struct nfsclopen *op, NFSPROC_T *p) 632{ 633 struct nfsrv_descript nfsd, *nd = &nfsd; 634 struct nfscllockowner *lp, *nlp; 635 struct nfscllock *lop, *nlop; 636 struct ucred *tcred; 637 u_int64_t off = 0, len = 0; 638 u_int32_t type = NFSV4LOCKT_READ; 639 int error, do_unlock, trycnt; 640 641 tcred = newnfs_getcred(); 642 newnfs_copycred(&op->nfso_cred, tcred); 643 /* 644 * (Theoretically this could be done in the same 645 * compound as the close, but having multiple 646 * sequenced Ops in the same compound might be 647 * too scary for some servers.) 648 */ 649 if (op->nfso_posixlock) { 650 off = 0; 651 len = NFS64BITSSET; 652 type = NFSV4LOCKT_READ; 653 } 654 655 /* 656 * Since this function is only called from VOP_INACTIVE(), no 657 * other thread will be manipulating this Open. As such, the 658 * lock lists are not being changed by other threads, so it should 659 * be safe to do this without locking. 660 */ 661 LIST_FOREACH(lp, &op->nfso_lock, nfsl_list) { 662 do_unlock = 1; 663 LIST_FOREACH_SAFE(lop, &lp->nfsl_lock, nfslo_list, nlop) { 664 if (op->nfso_posixlock == 0) { 665 off = lop->nfslo_first; 666 len = lop->nfslo_end - lop->nfslo_first; 667 if (lop->nfslo_type == F_WRLCK) 668 type = NFSV4LOCKT_WRITE; 669 else 670 type = NFSV4LOCKT_READ; 671 } 672 if (do_unlock) { 673 trycnt = 0; 674 do { 675 error = nfsrpc_locku(nd, nmp, lp, off, 676 len, type, tcred, p, 0); 677 if ((nd->nd_repstat == NFSERR_GRACE || 678 nd->nd_repstat == NFSERR_DELAY) && 679 error == 0) 680 (void) nfs_catnap(PZERO, 681 (int)nd->nd_repstat, 682 "nfs_close"); 683 } while ((nd->nd_repstat == NFSERR_GRACE || 684 nd->nd_repstat == NFSERR_DELAY) && 685 error == 0 && trycnt++ < 5); 686 if (op->nfso_posixlock) 687 do_unlock = 0; 688 } 689 nfscl_freelock(lop, 0); 690 } 691 /* 692 * Do a ReleaseLockOwner. 693 * The lock owner name nfsl_owner may be used by other opens for 694 * other files but the lock_owner4 name that nfsrpc_rellockown() 695 * puts on the wire has the file handle for this file appended 696 * to it, so it can be done now. 697 */ 698 (void)nfsrpc_rellockown(nmp, lp, lp->nfsl_open->nfso_fh, 699 lp->nfsl_open->nfso_fhlen, tcred, p); 700 } 701 702 /* 703 * There could be other Opens for different files on the same 704 * OpenOwner, so locking is required. 705 */ 706 NFSLOCKCLSTATE(); 707 nfscl_lockexcl(&op->nfso_own->nfsow_rwlock, NFSCLSTATEMUTEXPTR); 708 NFSUNLOCKCLSTATE(); 709 do { 710 error = nfscl_tryclose(op, tcred, nmp, p); 711 if (error == NFSERR_GRACE) 712 (void) nfs_catnap(PZERO, error, "nfs_close"); 713 } while (error == NFSERR_GRACE); 714 NFSLOCKCLSTATE(); 715 nfscl_lockunlock(&op->nfso_own->nfsow_rwlock); 716 717 LIST_FOREACH_SAFE(lp, &op->nfso_lock, nfsl_list, nlp) 718 nfscl_freelockowner(lp, 0); 719 nfscl_freeopen(op, 0); 720 NFSUNLOCKCLSTATE(); 721 NFSFREECRED(tcred); 722} 723 724/* 725 * The actual Close RPC. 726 */ 727APPLESTATIC int 728nfsrpc_closerpc(struct nfsrv_descript *nd, struct nfsmount *nmp, 729 struct nfsclopen *op, struct ucred *cred, NFSPROC_T *p, 730 int syscred) 731{ 732 u_int32_t *tl; 733 int error; 734 735 nfscl_reqstart(nd, NFSPROC_CLOSE, nmp, op->nfso_fh, 736 op->nfso_fhlen, NULL, NULL); 737 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED + NFSX_STATEID); 738 *tl++ = txdr_unsigned(op->nfso_own->nfsow_seqid); 739 if (NFSHASNFSV4N(nmp)) 740 *tl++ = 0; 741 else 742 *tl++ = op->nfso_stateid.seqid; 743 *tl++ = op->nfso_stateid.other[0]; 744 *tl++ = op->nfso_stateid.other[1]; 745 *tl = op->nfso_stateid.other[2]; 746 if (syscred) 747 nd->nd_flag |= ND_USEGSSNAME; 748 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 749 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 750 if (error) 751 return (error); 752 NFSCL_INCRSEQID(op->nfso_own->nfsow_seqid, nd); 753 if (nd->nd_repstat == 0) 754 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID); 755 error = nd->nd_repstat; 756 if (error == NFSERR_STALESTATEID || error == NFSERR_BADSESSION) 757 nfscl_initiate_recovery(op->nfso_own->nfsow_clp); 758nfsmout: 759 mbuf_freem(nd->nd_mrep); 760 return (error); 761} 762 763/* 764 * V4 Open Confirm RPC. 765 */ 766APPLESTATIC int 767nfsrpc_openconfirm(vnode_t vp, u_int8_t *nfhp, int fhlen, 768 struct nfsclopen *op, struct ucred *cred, NFSPROC_T *p) 769{ 770 u_int32_t *tl; 771 struct nfsrv_descript nfsd, *nd = &nfsd; 772 struct nfsmount *nmp; 773 int error; 774 775 nmp = VFSTONFS(vnode_mount(vp)); 776 if (NFSHASNFSV4N(nmp)) 777 return (0); /* No confirmation for NFSv4.1. */ 778 nfscl_reqstart(nd, NFSPROC_OPENCONFIRM, nmp, nfhp, fhlen, NULL, NULL); 779 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED + NFSX_STATEID); 780 *tl++ = op->nfso_stateid.seqid; 781 *tl++ = op->nfso_stateid.other[0]; 782 *tl++ = op->nfso_stateid.other[1]; 783 *tl++ = op->nfso_stateid.other[2]; 784 *tl = txdr_unsigned(op->nfso_own->nfsow_seqid); 785 error = nfscl_request(nd, vp, p, cred, NULL); 786 if (error) 787 return (error); 788 NFSCL_INCRSEQID(op->nfso_own->nfsow_seqid, nd); 789 if (!nd->nd_repstat) { 790 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID); 791 op->nfso_stateid.seqid = *tl++; 792 op->nfso_stateid.other[0] = *tl++; 793 op->nfso_stateid.other[1] = *tl++; 794 op->nfso_stateid.other[2] = *tl; 795 } 796 error = nd->nd_repstat; 797 if (error == NFSERR_STALESTATEID || error == NFSERR_BADSESSION) 798 nfscl_initiate_recovery(op->nfso_own->nfsow_clp); 799nfsmout: 800 mbuf_freem(nd->nd_mrep); 801 return (error); 802} 803 804/* 805 * Do the setclientid and setclientid confirm RPCs. Called from nfs_statfs() 806 * when a mount has just occurred and when the server replies NFSERR_EXPIRED. 807 */ 808APPLESTATIC int 809nfsrpc_setclient(struct nfsmount *nmp, struct nfsclclient *clp, int reclaim, 810 struct ucred *cred, NFSPROC_T *p) 811{ 812 u_int32_t *tl; 813 struct nfsrv_descript nfsd; 814 struct nfsrv_descript *nd = &nfsd; 815 nfsattrbit_t attrbits; 816 u_int8_t *cp = NULL, *cp2, addr[INET6_ADDRSTRLEN + 9]; 817 u_short port; 818 int error, isinet6 = 0, callblen; 819 nfsquad_t confirm; 820 u_int32_t lease; 821 static u_int32_t rev = 0; 822 struct nfsclds *dsp, *ndsp, *tdsp; 823 824 if (nfsboottime.tv_sec == 0) 825 NFSSETBOOTTIME(nfsboottime); 826 clp->nfsc_rev = rev++; 827 if (NFSHASNFSV4N(nmp)) { 828 error = nfsrpc_exchangeid(nmp, clp, &nmp->nm_sockreq, 829 NFSV4EXCH_USEPNFSMDS | NFSV4EXCH_USENONPNFS, &dsp, cred, p); 830 NFSCL_DEBUG(1, "aft exch=%d\n", error); 831 if (error == 0) { 832 error = nfsrpc_createsession(nmp, &dsp->nfsclds_sess, 833 &nmp->nm_sockreq, 834 dsp->nfsclds_sess.nfsess_sequenceid, 1, cred, p); 835 if (error == 0) { 836 NFSLOCKMNT(nmp); 837 TAILQ_FOREACH_SAFE(tdsp, &nmp->nm_sess, 838 nfsclds_list, ndsp) 839 nfscl_freenfsclds(tdsp); 840 TAILQ_INIT(&nmp->nm_sess); 841 TAILQ_INSERT_HEAD(&nmp->nm_sess, dsp, 842 nfsclds_list); 843 NFSUNLOCKMNT(nmp); 844 } else 845 nfscl_freenfsclds(dsp); 846 NFSCL_DEBUG(1, "aft createsess=%d\n", error); 847 } 848 if (error == 0 && reclaim == 0) { 849 error = nfsrpc_reclaimcomplete(nmp, cred, p); 850 NFSCL_DEBUG(1, "aft reclaimcomp=%d\n", error); 851 if (error == NFSERR_COMPLETEALREADY || 852 error == NFSERR_NOTSUPP) 853 /* Ignore this error. */ 854 error = 0; 855 } 856 return (error); 857 } 858 859 /* 860 * Allocate a single session structure for NFSv4.0, because some of 861 * the fields are used by NFSv4.0 although it doesn't do a session. 862 */ 863 dsp = malloc(sizeof(struct nfsclds), M_NFSCLDS, M_WAITOK | M_ZERO); 864 mtx_init(&dsp->nfsclds_mtx, "nfsds", NULL, MTX_DEF); 865 mtx_init(&dsp->nfsclds_sess.nfsess_mtx, "nfssession", NULL, MTX_DEF); 866 NFSLOCKMNT(nmp); 867 TAILQ_INSERT_HEAD(&nmp->nm_sess, dsp, nfsclds_list); 868 NFSUNLOCKMNT(nmp); 869 870 nfscl_reqstart(nd, NFSPROC_SETCLIENTID, nmp, NULL, 0, NULL, NULL); 871 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 872 *tl++ = txdr_unsigned(nfsboottime.tv_sec); 873 *tl = txdr_unsigned(clp->nfsc_rev); 874 (void) nfsm_strtom(nd, clp->nfsc_id, clp->nfsc_idlen); 875 876 /* 877 * set up the callback address 878 */ 879 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 880 *tl = txdr_unsigned(NFS_CALLBCKPROG); 881 callblen = strlen(nfsv4_callbackaddr); 882 if (callblen == 0) 883 cp = nfscl_getmyip(nmp, &isinet6); 884 if (nfscl_enablecallb && nfs_numnfscbd > 0 && 885 (callblen > 0 || cp != NULL)) { 886 port = htons(nfsv4_cbport); 887 cp2 = (u_int8_t *)&port; 888#ifdef INET6 889 if ((callblen > 0 && 890 strchr(nfsv4_callbackaddr, ':')) || isinet6) { 891 char ip6buf[INET6_ADDRSTRLEN], *ip6add; 892 893 (void) nfsm_strtom(nd, "tcp6", 4); 894 if (callblen == 0) { 895 ip6_sprintf(ip6buf, (struct in6_addr *)cp); 896 ip6add = ip6buf; 897 } else { 898 ip6add = nfsv4_callbackaddr; 899 } 900 snprintf(addr, INET6_ADDRSTRLEN + 9, "%s.%d.%d", 901 ip6add, cp2[0], cp2[1]); 902 } else 903#endif 904 { 905 (void) nfsm_strtom(nd, "tcp", 3); 906 if (callblen == 0) 907 snprintf(addr, INET6_ADDRSTRLEN + 9, 908 "%d.%d.%d.%d.%d.%d", cp[0], cp[1], 909 cp[2], cp[3], cp2[0], cp2[1]); 910 else 911 snprintf(addr, INET6_ADDRSTRLEN + 9, 912 "%s.%d.%d", nfsv4_callbackaddr, 913 cp2[0], cp2[1]); 914 } 915 (void) nfsm_strtom(nd, addr, strlen(addr)); 916 } else { 917 (void) nfsm_strtom(nd, "tcp", 3); 918 (void) nfsm_strtom(nd, "0.0.0.0.0.0", 11); 919 } 920 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 921 *tl = txdr_unsigned(clp->nfsc_cbident); 922 nd->nd_flag |= ND_USEGSSNAME; 923 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 924 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 925 if (error) 926 return (error); 927 if (nd->nd_repstat == 0) { 928 NFSM_DISSECT(tl, u_int32_t *, 4 * NFSX_UNSIGNED); 929 NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[0] = *tl++; 930 NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[1] = *tl++; 931 confirm.lval[0] = *tl++; 932 confirm.lval[1] = *tl; 933 mbuf_freem(nd->nd_mrep); 934 nd->nd_mrep = NULL; 935 936 /* 937 * and confirm it. 938 */ 939 nfscl_reqstart(nd, NFSPROC_SETCLIENTIDCFRM, nmp, NULL, 0, NULL, 940 NULL); 941 NFSM_BUILD(tl, u_int32_t *, 4 * NFSX_UNSIGNED); 942 *tl++ = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[0]; 943 *tl++ = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[1]; 944 *tl++ = confirm.lval[0]; 945 *tl = confirm.lval[1]; 946 nd->nd_flag |= ND_USEGSSNAME; 947 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, 948 cred, NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 949 if (error) 950 return (error); 951 mbuf_freem(nd->nd_mrep); 952 nd->nd_mrep = NULL; 953 if (nd->nd_repstat == 0) { 954 nfscl_reqstart(nd, NFSPROC_GETATTR, nmp, nmp->nm_fh, 955 nmp->nm_fhsize, NULL, NULL); 956 NFSZERO_ATTRBIT(&attrbits); 957 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_LEASETIME); 958 (void) nfsrv_putattrbit(nd, &attrbits); 959 nd->nd_flag |= ND_USEGSSNAME; 960 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, 961 cred, NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 962 if (error) 963 return (error); 964 if (nd->nd_repstat == 0) { 965 error = nfsv4_loadattr(nd, NULL, NULL, NULL, NULL, 0, NULL, 966 NULL, NULL, NULL, NULL, 0, NULL, &lease, NULL, p, cred); 967 if (error) 968 goto nfsmout; 969 clp->nfsc_renew = NFSCL_RENEW(lease); 970 clp->nfsc_expire = NFSD_MONOSEC + clp->nfsc_renew; 971 clp->nfsc_clientidrev++; 972 if (clp->nfsc_clientidrev == 0) 973 clp->nfsc_clientidrev++; 974 } 975 } 976 } 977 error = nd->nd_repstat; 978nfsmout: 979 mbuf_freem(nd->nd_mrep); 980 return (error); 981} 982 983/* 984 * nfs getattr call. 985 */ 986APPLESTATIC int 987nfsrpc_getattr(vnode_t vp, struct ucred *cred, NFSPROC_T *p, 988 struct nfsvattr *nap, void *stuff) 989{ 990 struct nfsrv_descript nfsd, *nd = &nfsd; 991 int error; 992 nfsattrbit_t attrbits; 993 994 NFSCL_REQSTART(nd, NFSPROC_GETATTR, vp); 995 if (nd->nd_flag & ND_NFSV4) { 996 NFSGETATTR_ATTRBIT(&attrbits); 997 (void) nfsrv_putattrbit(nd, &attrbits); 998 } 999 error = nfscl_request(nd, vp, p, cred, stuff); 1000 if (error) 1001 return (error); 1002 if (!nd->nd_repstat) 1003 error = nfsm_loadattr(nd, nap); 1004 else 1005 error = nd->nd_repstat; 1006 mbuf_freem(nd->nd_mrep); 1007 return (error); 1008} 1009 1010/* 1011 * nfs getattr call with non-vnode arguemnts. 1012 */ 1013APPLESTATIC int 1014nfsrpc_getattrnovp(struct nfsmount *nmp, u_int8_t *fhp, int fhlen, int syscred, 1015 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, u_int64_t *xidp, 1016 uint32_t *leasep) 1017{ 1018 struct nfsrv_descript nfsd, *nd = &nfsd; 1019 int error, vers = NFS_VER2; 1020 nfsattrbit_t attrbits; 1021 1022 nfscl_reqstart(nd, NFSPROC_GETATTR, nmp, fhp, fhlen, NULL, NULL); 1023 if (nd->nd_flag & ND_NFSV4) { 1024 vers = NFS_VER4; 1025 NFSGETATTR_ATTRBIT(&attrbits); 1026 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_LEASETIME); 1027 (void) nfsrv_putattrbit(nd, &attrbits); 1028 } else if (nd->nd_flag & ND_NFSV3) { 1029 vers = NFS_VER3; 1030 } 1031 if (syscred) 1032 nd->nd_flag |= ND_USEGSSNAME; 1033 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 1034 NFS_PROG, vers, NULL, 1, xidp, NULL); 1035 if (error) 1036 return (error); 1037 if (nd->nd_repstat == 0) { 1038 if ((nd->nd_flag & ND_NFSV4) != 0) 1039 error = nfsv4_loadattr(nd, NULL, nap, NULL, NULL, 0, 1040 NULL, NULL, NULL, NULL, NULL, 0, NULL, leasep, NULL, 1041 NULL, NULL); 1042 else 1043 error = nfsm_loadattr(nd, nap); 1044 } else 1045 error = nd->nd_repstat; 1046 mbuf_freem(nd->nd_mrep); 1047 return (error); 1048} 1049 1050/* 1051 * Do an nfs setattr operation. 1052 */ 1053APPLESTATIC int 1054nfsrpc_setattr(vnode_t vp, struct vattr *vap, NFSACL_T *aclp, 1055 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *rnap, int *attrflagp, 1056 void *stuff) 1057{ 1058 int error, expireret = 0, openerr, retrycnt; 1059 u_int32_t clidrev = 0, mode; 1060 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 1061 struct nfsfh *nfhp; 1062 nfsv4stateid_t stateid; 1063 void *lckp; 1064 1065 if (nmp->nm_clp != NULL) 1066 clidrev = nmp->nm_clp->nfsc_clientidrev; 1067 if (vap != NULL && NFSATTRISSET(u_quad_t, vap, va_size)) 1068 mode = NFSV4OPEN_ACCESSWRITE; 1069 else 1070 mode = NFSV4OPEN_ACCESSREAD; 1071 retrycnt = 0; 1072 do { 1073 lckp = NULL; 1074 openerr = 1; 1075 if (NFSHASNFSV4(nmp)) { 1076 nfhp = VTONFS(vp)->n_fhp; 1077 error = nfscl_getstateid(vp, nfhp->nfh_fh, 1078 nfhp->nfh_len, mode, 0, cred, p, &stateid, &lckp); 1079 if (error && vnode_vtype(vp) == VREG && 1080 (mode == NFSV4OPEN_ACCESSWRITE || 1081 nfstest_openallsetattr)) { 1082 /* 1083 * No Open stateid, so try and open the file 1084 * now. 1085 */ 1086 if (mode == NFSV4OPEN_ACCESSWRITE) 1087 openerr = nfsrpc_open(vp, FWRITE, cred, 1088 p); 1089 else 1090 openerr = nfsrpc_open(vp, FREAD, cred, 1091 p); 1092 if (!openerr) 1093 (void) nfscl_getstateid(vp, 1094 nfhp->nfh_fh, nfhp->nfh_len, 1095 mode, 0, cred, p, &stateid, &lckp); 1096 } 1097 } 1098 if (vap != NULL) 1099 error = nfsrpc_setattrrpc(vp, vap, &stateid, cred, p, 1100 rnap, attrflagp, stuff); 1101 else 1102 error = nfsrpc_setaclrpc(vp, cred, p, aclp, &stateid, 1103 stuff); 1104 if (error == NFSERR_STALESTATEID || error == NFSERR_BADSESSION) 1105 nfscl_initiate_recovery(nmp->nm_clp); 1106 if (lckp != NULL) 1107 nfscl_lockderef(lckp); 1108 if (!openerr) 1109 (void) nfsrpc_close(vp, 0, p); 1110 if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 1111 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 1112 error == NFSERR_OLDSTATEID || error == NFSERR_BADSESSION) { 1113 (void) nfs_catnap(PZERO, error, "nfs_setattr"); 1114 } else if ((error == NFSERR_EXPIRED || 1115 error == NFSERR_BADSTATEID) && clidrev != 0) { 1116 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p); 1117 } 1118 retrycnt++; 1119 } while (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 1120 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 1121 error == NFSERR_BADSESSION || 1122 (error == NFSERR_OLDSTATEID && retrycnt < 20) || 1123 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) && 1124 expireret == 0 && clidrev != 0 && retrycnt < 4)); 1125 if (error && retrycnt >= 4) 1126 error = EIO; 1127 return (error); 1128} 1129 1130static int 1131nfsrpc_setattrrpc(vnode_t vp, struct vattr *vap, 1132 nfsv4stateid_t *stateidp, struct ucred *cred, NFSPROC_T *p, 1133 struct nfsvattr *rnap, int *attrflagp, void *stuff) 1134{ 1135 u_int32_t *tl; 1136 struct nfsrv_descript nfsd, *nd = &nfsd; 1137 int error; 1138 nfsattrbit_t attrbits; 1139 1140 *attrflagp = 0; 1141 NFSCL_REQSTART(nd, NFSPROC_SETATTR, vp); 1142 if (nd->nd_flag & ND_NFSV4) 1143 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID); 1144 vap->va_type = vnode_vtype(vp); 1145 nfscl_fillsattr(nd, vap, vp, NFSSATTR_FULL, 0); 1146 if (nd->nd_flag & ND_NFSV3) { 1147 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1148 *tl = newnfs_false; 1149 } else if (nd->nd_flag & ND_NFSV4) { 1150 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1151 *tl = txdr_unsigned(NFSV4OP_GETATTR); 1152 NFSGETATTR_ATTRBIT(&attrbits); 1153 (void) nfsrv_putattrbit(nd, &attrbits); 1154 } 1155 error = nfscl_request(nd, vp, p, cred, stuff); 1156 if (error) 1157 return (error); 1158 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) 1159 error = nfscl_wcc_data(nd, vp, rnap, attrflagp, NULL, stuff); 1160 if ((nd->nd_flag & ND_NFSV4) && !error) 1161 error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL); 1162 if (!(nd->nd_flag & ND_NFSV3) && !nd->nd_repstat && !error) 1163 error = nfscl_postop_attr(nd, rnap, attrflagp, stuff); 1164 mbuf_freem(nd->nd_mrep); 1165 if (nd->nd_repstat && !error) 1166 error = nd->nd_repstat; 1167 return (error); 1168} 1169 1170/* 1171 * nfs lookup rpc 1172 */ 1173APPLESTATIC int 1174nfsrpc_lookup(vnode_t dvp, char *name, int len, struct ucred *cred, 1175 NFSPROC_T *p, struct nfsvattr *dnap, struct nfsvattr *nap, 1176 struct nfsfh **nfhpp, int *attrflagp, int *dattrflagp, void *stuff) 1177{ 1178 u_int32_t *tl; 1179 struct nfsrv_descript nfsd, *nd = &nfsd; 1180 struct nfsmount *nmp; 1181 struct nfsnode *np; 1182 struct nfsfh *nfhp; 1183 nfsattrbit_t attrbits; 1184 int error = 0, lookupp = 0; 1185 1186 *attrflagp = 0; 1187 *dattrflagp = 0; 1188 if (vnode_vtype(dvp) != VDIR) 1189 return (ENOTDIR); 1190 nmp = VFSTONFS(vnode_mount(dvp)); 1191 if (len > NFS_MAXNAMLEN) 1192 return (ENAMETOOLONG); 1193 if (NFSHASNFSV4(nmp) && len == 1 && 1194 name[0] == '.') { 1195 /* 1196 * Just return the current dir's fh. 1197 */ 1198 np = VTONFS(dvp); 1199 MALLOC(nfhp, struct nfsfh *, sizeof (struct nfsfh) + 1200 np->n_fhp->nfh_len, M_NFSFH, M_WAITOK); 1201 nfhp->nfh_len = np->n_fhp->nfh_len; 1202 NFSBCOPY(np->n_fhp->nfh_fh, nfhp->nfh_fh, nfhp->nfh_len); 1203 *nfhpp = nfhp; 1204 return (0); 1205 } 1206 if (NFSHASNFSV4(nmp) && len == 2 && 1207 name[0] == '.' && name[1] == '.') { 1208 lookupp = 1; 1209 NFSCL_REQSTART(nd, NFSPROC_LOOKUPP, dvp); 1210 } else { 1211 NFSCL_REQSTART(nd, NFSPROC_LOOKUP, dvp); 1212 (void) nfsm_strtom(nd, name, len); 1213 } 1214 if (nd->nd_flag & ND_NFSV4) { 1215 NFSGETATTR_ATTRBIT(&attrbits); 1216 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1217 *tl++ = txdr_unsigned(NFSV4OP_GETFH); 1218 *tl = txdr_unsigned(NFSV4OP_GETATTR); 1219 (void) nfsrv_putattrbit(nd, &attrbits); 1220 } 1221 error = nfscl_request(nd, dvp, p, cred, stuff); 1222 if (error) 1223 return (error); 1224 if (nd->nd_repstat) { 1225 /* 1226 * When an NFSv4 Lookupp returns ENOENT, it means that 1227 * the lookup is at the root of an fs, so return this dir. 1228 */ 1229 if (nd->nd_repstat == NFSERR_NOENT && lookupp) { 1230 np = VTONFS(dvp); 1231 MALLOC(nfhp, struct nfsfh *, sizeof (struct nfsfh) + 1232 np->n_fhp->nfh_len, M_NFSFH, M_WAITOK); 1233 nfhp->nfh_len = np->n_fhp->nfh_len; 1234 NFSBCOPY(np->n_fhp->nfh_fh, nfhp->nfh_fh, nfhp->nfh_len); 1235 *nfhpp = nfhp; 1236 mbuf_freem(nd->nd_mrep); 1237 return (0); 1238 } 1239 if (nd->nd_flag & ND_NFSV3) 1240 error = nfscl_postop_attr(nd, dnap, dattrflagp, stuff); 1241 else if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == 1242 ND_NFSV4) { 1243 /* Load the directory attributes. */ 1244 error = nfsm_loadattr(nd, dnap); 1245 if (error == 0) 1246 *dattrflagp = 1; 1247 } 1248 goto nfsmout; 1249 } 1250 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == ND_NFSV4) { 1251 /* Load the directory attributes. */ 1252 error = nfsm_loadattr(nd, dnap); 1253 if (error != 0) 1254 goto nfsmout; 1255 *dattrflagp = 1; 1256 /* Skip over the Lookup and GetFH operation status values. */ 1257 NFSM_DISSECT(tl, u_int32_t *, 4 * NFSX_UNSIGNED); 1258 } 1259 error = nfsm_getfh(nd, nfhpp); 1260 if (error) 1261 goto nfsmout; 1262 1263 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 1264 if ((nd->nd_flag & ND_NFSV3) && !error) 1265 error = nfscl_postop_attr(nd, dnap, dattrflagp, stuff); 1266nfsmout: 1267 mbuf_freem(nd->nd_mrep); 1268 if (!error && nd->nd_repstat) 1269 error = nd->nd_repstat; 1270 return (error); 1271} 1272 1273/* 1274 * Do a readlink rpc. 1275 */ 1276APPLESTATIC int 1277nfsrpc_readlink(vnode_t vp, struct uio *uiop, struct ucred *cred, 1278 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff) 1279{ 1280 u_int32_t *tl; 1281 struct nfsrv_descript nfsd, *nd = &nfsd; 1282 struct nfsnode *np = VTONFS(vp); 1283 nfsattrbit_t attrbits; 1284 int error, len, cangetattr = 1; 1285 1286 *attrflagp = 0; 1287 NFSCL_REQSTART(nd, NFSPROC_READLINK, vp); 1288 if (nd->nd_flag & ND_NFSV4) { 1289 /* 1290 * And do a Getattr op. 1291 */ 1292 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1293 *tl = txdr_unsigned(NFSV4OP_GETATTR); 1294 NFSGETATTR_ATTRBIT(&attrbits); 1295 (void) nfsrv_putattrbit(nd, &attrbits); 1296 } 1297 error = nfscl_request(nd, vp, p, cred, stuff); 1298 if (error) 1299 return (error); 1300 if (nd->nd_flag & ND_NFSV3) 1301 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 1302 if (!nd->nd_repstat && !error) { 1303 NFSM_STRSIZ(len, NFS_MAXPATHLEN); 1304 /* 1305 * This seems weird to me, but must have been added to 1306 * FreeBSD for some reason. The only thing I can think of 1307 * is that there was/is some server that replies with 1308 * more link data than it should? 1309 */ 1310 if (len == NFS_MAXPATHLEN) { 1311 NFSLOCKNODE(np); 1312 if (np->n_size > 0 && np->n_size < NFS_MAXPATHLEN) { 1313 len = np->n_size; 1314 cangetattr = 0; 1315 } 1316 NFSUNLOCKNODE(np); 1317 } 1318 error = nfsm_mbufuio(nd, uiop, len); 1319 if ((nd->nd_flag & ND_NFSV4) && !error && cangetattr) 1320 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 1321 } 1322 if (nd->nd_repstat && !error) 1323 error = nd->nd_repstat; 1324nfsmout: 1325 mbuf_freem(nd->nd_mrep); 1326 return (error); 1327} 1328 1329/* 1330 * Read operation. 1331 */ 1332APPLESTATIC int 1333nfsrpc_read(vnode_t vp, struct uio *uiop, struct ucred *cred, 1334 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff) 1335{ 1336 int error, expireret = 0, retrycnt; 1337 u_int32_t clidrev = 0; 1338 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 1339 struct nfsnode *np = VTONFS(vp); 1340 struct ucred *newcred; 1341 struct nfsfh *nfhp = NULL; 1342 nfsv4stateid_t stateid; 1343 void *lckp; 1344 1345 if (nmp->nm_clp != NULL) 1346 clidrev = nmp->nm_clp->nfsc_clientidrev; 1347 newcred = cred; 1348 if (NFSHASNFSV4(nmp)) { 1349 nfhp = np->n_fhp; 1350 newcred = NFSNEWCRED(cred); 1351 } 1352 retrycnt = 0; 1353 do { 1354 lckp = NULL; 1355 if (NFSHASNFSV4(nmp)) 1356 (void)nfscl_getstateid(vp, nfhp->nfh_fh, nfhp->nfh_len, 1357 NFSV4OPEN_ACCESSREAD, 0, newcred, p, &stateid, 1358 &lckp); 1359 error = nfsrpc_readrpc(vp, uiop, newcred, &stateid, p, nap, 1360 attrflagp, stuff); 1361 if (error == NFSERR_STALESTATEID || error == NFSERR_BADSESSION) 1362 nfscl_initiate_recovery(nmp->nm_clp); 1363 if (lckp != NULL) 1364 nfscl_lockderef(lckp); 1365 if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 1366 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 1367 error == NFSERR_OLDSTATEID || error == NFSERR_BADSESSION) { 1368 (void) nfs_catnap(PZERO, error, "nfs_read"); 1369 } else if ((error == NFSERR_EXPIRED || 1370 error == NFSERR_BADSTATEID) && clidrev != 0) { 1371 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p); 1372 } 1373 retrycnt++; 1374 } while (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 1375 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 1376 error == NFSERR_BADSESSION || 1377 (error == NFSERR_OLDSTATEID && retrycnt < 20) || 1378 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) && 1379 expireret == 0 && clidrev != 0 && retrycnt < 4)); 1380 if (error && retrycnt >= 4) 1381 error = EIO; 1382 if (NFSHASNFSV4(nmp)) 1383 NFSFREECRED(newcred); 1384 return (error); 1385} 1386 1387/* 1388 * The actual read RPC. 1389 */ 1390static int 1391nfsrpc_readrpc(vnode_t vp, struct uio *uiop, struct ucred *cred, 1392 nfsv4stateid_t *stateidp, NFSPROC_T *p, struct nfsvattr *nap, 1393 int *attrflagp, void *stuff) 1394{ 1395 u_int32_t *tl; 1396 int error = 0, len, retlen, tsiz, eof = 0; 1397 struct nfsrv_descript nfsd; 1398 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 1399 struct nfsrv_descript *nd = &nfsd; 1400 int rsize; 1401 off_t tmp_off; 1402 1403 *attrflagp = 0; 1404 tsiz = uio_uio_resid(uiop); 1405 tmp_off = uiop->uio_offset + tsiz; 1406 NFSLOCKMNT(nmp); 1407 if (tmp_off > nmp->nm_maxfilesize || tmp_off < uiop->uio_offset) { 1408 NFSUNLOCKMNT(nmp); 1409 return (EFBIG); 1410 } 1411 rsize = nmp->nm_rsize; 1412 NFSUNLOCKMNT(nmp); 1413 nd->nd_mrep = NULL; 1414 while (tsiz > 0) { 1415 *attrflagp = 0; 1416 len = (tsiz > rsize) ? rsize : tsiz; 1417 NFSCL_REQSTART(nd, NFSPROC_READ, vp); 1418 if (nd->nd_flag & ND_NFSV4) 1419 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID); 1420 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED * 3); 1421 if (nd->nd_flag & ND_NFSV2) { 1422 *tl++ = txdr_unsigned(uiop->uio_offset); 1423 *tl++ = txdr_unsigned(len); 1424 *tl = 0; 1425 } else { 1426 txdr_hyper(uiop->uio_offset, tl); 1427 *(tl + 2) = txdr_unsigned(len); 1428 } 1429 /* 1430 * Since I can't do a Getattr for NFSv4 for Write, there 1431 * doesn't seem any point in doing one here, either. 1432 * (See the comment in nfsrpc_writerpc() for more info.) 1433 */ 1434 error = nfscl_request(nd, vp, p, cred, stuff); 1435 if (error) 1436 return (error); 1437 if (nd->nd_flag & ND_NFSV3) { 1438 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 1439 } else if (!nd->nd_repstat && (nd->nd_flag & ND_NFSV2)) { 1440 error = nfsm_loadattr(nd, nap); 1441 if (!error) 1442 *attrflagp = 1; 1443 } 1444 if (nd->nd_repstat || error) { 1445 if (!error) 1446 error = nd->nd_repstat; 1447 goto nfsmout; 1448 } 1449 if (nd->nd_flag & ND_NFSV3) { 1450 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1451 eof = fxdr_unsigned(int, *(tl + 1)); 1452 } else if (nd->nd_flag & ND_NFSV4) { 1453 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 1454 eof = fxdr_unsigned(int, *tl); 1455 } 1456 NFSM_STRSIZ(retlen, len); 1457 error = nfsm_mbufuio(nd, uiop, retlen); 1458 if (error) 1459 goto nfsmout; 1460 mbuf_freem(nd->nd_mrep); 1461 nd->nd_mrep = NULL; 1462 tsiz -= retlen; 1463 if (!(nd->nd_flag & ND_NFSV2)) { 1464 if (eof || retlen == 0) 1465 tsiz = 0; 1466 } else if (retlen < len) 1467 tsiz = 0; 1468 } 1469 return (0); 1470nfsmout: 1471 if (nd->nd_mrep != NULL) 1472 mbuf_freem(nd->nd_mrep); 1473 return (error); 1474} 1475 1476/* 1477 * nfs write operation 1478 * When called_from_strategy != 0, it should return EIO for an error that 1479 * indicates recovery is in progress, so that the buffer will be left 1480 * dirty and be written back to the server later. If it loops around, 1481 * the recovery thread could get stuck waiting for the buffer and recovery 1482 * will then deadlock. 1483 */ 1484APPLESTATIC int 1485nfsrpc_write(vnode_t vp, struct uio *uiop, int *iomode, int *must_commit, 1486 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, 1487 void *stuff, int called_from_strategy) 1488{ 1489 int error, expireret = 0, retrycnt, nostateid; 1490 u_int32_t clidrev = 0; 1491 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 1492 struct nfsnode *np = VTONFS(vp); 1493 struct ucred *newcred; 1494 struct nfsfh *nfhp = NULL; 1495 nfsv4stateid_t stateid; 1496 void *lckp; 1497 1498 *must_commit = 0; 1499 if (nmp->nm_clp != NULL) 1500 clidrev = nmp->nm_clp->nfsc_clientidrev; 1501 newcred = cred; 1502 if (NFSHASNFSV4(nmp)) { 1503 newcred = NFSNEWCRED(cred); 1504 nfhp = np->n_fhp; 1505 } 1506 retrycnt = 0; 1507 do { 1508 lckp = NULL; 1509 nostateid = 0; 1510 if (NFSHASNFSV4(nmp)) { 1511 (void)nfscl_getstateid(vp, nfhp->nfh_fh, nfhp->nfh_len, 1512 NFSV4OPEN_ACCESSWRITE, 0, newcred, p, &stateid, 1513 &lckp); 1514 if (stateid.other[0] == 0 && stateid.other[1] == 0 && 1515 stateid.other[2] == 0) { 1516 nostateid = 1; 1517 NFSCL_DEBUG(1, "stateid0 in write\n"); 1518 } 1519 } 1520 1521 /* 1522 * If there is no stateid for NFSv4, it means this is an 1523 * extraneous write after close. Basically a poorly 1524 * implemented buffer cache. Just don't do the write. 1525 */ 1526 if (nostateid) 1527 error = 0; 1528 else 1529 error = nfsrpc_writerpc(vp, uiop, iomode, must_commit, 1530 newcred, &stateid, p, nap, attrflagp, stuff); 1531 if (error == NFSERR_STALESTATEID || error == NFSERR_BADSESSION) 1532 nfscl_initiate_recovery(nmp->nm_clp); 1533 if (lckp != NULL) 1534 nfscl_lockderef(lckp); 1535 if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 1536 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 1537 error == NFSERR_OLDSTATEID || error == NFSERR_BADSESSION) { 1538 (void) nfs_catnap(PZERO, error, "nfs_write"); 1539 } else if ((error == NFSERR_EXPIRED || 1540 error == NFSERR_BADSTATEID) && clidrev != 0) { 1541 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p); 1542 } 1543 retrycnt++; 1544 } while (error == NFSERR_GRACE || error == NFSERR_DELAY || 1545 ((error == NFSERR_STALESTATEID || error == NFSERR_BADSESSION || 1546 error == NFSERR_STALEDONTRECOVER) && called_from_strategy == 0) || 1547 (error == NFSERR_OLDSTATEID && retrycnt < 20) || 1548 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) && 1549 expireret == 0 && clidrev != 0 && retrycnt < 4)); 1550 if (error != 0 && (retrycnt >= 4 || 1551 ((error == NFSERR_STALESTATEID || error == NFSERR_BADSESSION || 1552 error == NFSERR_STALEDONTRECOVER) && called_from_strategy != 0))) 1553 error = EIO; 1554 if (NFSHASNFSV4(nmp)) 1555 NFSFREECRED(newcred); 1556 return (error); 1557} 1558 1559/* 1560 * The actual write RPC. 1561 */ 1562static int 1563nfsrpc_writerpc(vnode_t vp, struct uio *uiop, int *iomode, 1564 int *must_commit, struct ucred *cred, nfsv4stateid_t *stateidp, 1565 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff) 1566{ 1567 u_int32_t *tl; 1568 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 1569 struct nfsnode *np = VTONFS(vp); 1570 int error = 0, len, tsiz, rlen, commit, committed = NFSWRITE_FILESYNC; 1571 int wccflag = 0, wsize; 1572 int32_t backup; 1573 struct nfsrv_descript nfsd; 1574 struct nfsrv_descript *nd = &nfsd; 1575 nfsattrbit_t attrbits; 1576 off_t tmp_off; 1577 1578 KASSERT(uiop->uio_iovcnt == 1, ("nfs: writerpc iovcnt > 1")); 1579 *attrflagp = 0; 1580 tsiz = uio_uio_resid(uiop); 1581 tmp_off = uiop->uio_offset + tsiz; 1582 NFSLOCKMNT(nmp); 1583 if (tmp_off > nmp->nm_maxfilesize || tmp_off < uiop->uio_offset) { 1584 NFSUNLOCKMNT(nmp); 1585 return (EFBIG); 1586 } 1587 wsize = nmp->nm_wsize; 1588 NFSUNLOCKMNT(nmp); 1589 nd->nd_mrep = NULL; /* NFSv2 sometimes does a write with */ 1590 nd->nd_repstat = 0; /* uio_resid == 0, so the while is not done */ 1591 while (tsiz > 0) { 1592 *attrflagp = 0; 1593 len = (tsiz > wsize) ? wsize : tsiz; 1594 NFSCL_REQSTART(nd, NFSPROC_WRITE, vp); 1595 if (nd->nd_flag & ND_NFSV4) { 1596 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID); 1597 NFSM_BUILD(tl, u_int32_t *, NFSX_HYPER+2*NFSX_UNSIGNED); 1598 txdr_hyper(uiop->uio_offset, tl); 1599 tl += 2; 1600 *tl++ = txdr_unsigned(*iomode); 1601 *tl = txdr_unsigned(len); 1602 } else if (nd->nd_flag & ND_NFSV3) { 1603 NFSM_BUILD(tl, u_int32_t *, NFSX_HYPER+3*NFSX_UNSIGNED); 1604 txdr_hyper(uiop->uio_offset, tl); 1605 tl += 2; 1606 *tl++ = txdr_unsigned(len); 1607 *tl++ = txdr_unsigned(*iomode); 1608 *tl = txdr_unsigned(len); 1609 } else { 1610 u_int32_t x; 1611 1612 NFSM_BUILD(tl, u_int32_t *, 4 * NFSX_UNSIGNED); 1613 /* 1614 * Not sure why someone changed this, since the 1615 * RFC clearly states that "beginoffset" and 1616 * "totalcount" are ignored, but it wouldn't 1617 * surprise me if there's a busted server out there. 1618 */ 1619 /* Set both "begin" and "current" to non-garbage. */ 1620 x = txdr_unsigned((u_int32_t)uiop->uio_offset); 1621 *tl++ = x; /* "begin offset" */ 1622 *tl++ = x; /* "current offset" */ 1623 x = txdr_unsigned(len); 1624 *tl++ = x; /* total to this offset */ 1625 *tl = x; /* size of this write */ 1626 1627 } 1628 nfsm_uiombuf(nd, uiop, len); 1629 /* 1630 * Although it is tempting to do a normal Getattr Op in the 1631 * NFSv4 compound, the result can be a nearly hung client 1632 * system if the Getattr asks for Owner and/or OwnerGroup. 1633 * It occurs when the client can't map either the Owner or 1634 * Owner_group name in the Getattr reply to a uid/gid. When 1635 * there is a cache miss, the kernel does an upcall to the 1636 * nfsuserd. Then, it can try and read the local /etc/passwd 1637 * or /etc/group file. It can then block in getnewbuf(), 1638 * waiting for dirty writes to be pushed to the NFS server. 1639 * The only reason this doesn't result in a complete 1640 * deadlock, is that the upcall times out and allows 1641 * the write to complete. However, progress is so slow 1642 * that it might just as well be deadlocked. 1643 * As such, we get the rest of the attributes, but not 1644 * Owner or Owner_group. 1645 * nb: nfscl_loadattrcache() needs to be told that these 1646 * partial attributes from a write rpc are being 1647 * passed in, via a argument flag. 1648 */ 1649 if (nd->nd_flag & ND_NFSV4) { 1650 NFSWRITEGETATTR_ATTRBIT(&attrbits); 1651 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1652 *tl = txdr_unsigned(NFSV4OP_GETATTR); 1653 (void) nfsrv_putattrbit(nd, &attrbits); 1654 } 1655 error = nfscl_request(nd, vp, p, cred, stuff); 1656 if (error) 1657 return (error); 1658 if (nd->nd_repstat) { 1659 /* 1660 * In case the rpc gets retried, roll 1661 * the uio fileds changed by nfsm_uiombuf() 1662 * back. 1663 */ 1664 uiop->uio_offset -= len; 1665 uio_uio_resid_add(uiop, len); 1666 uio_iov_base_add(uiop, -len); 1667 uio_iov_len_add(uiop, len); 1668 } 1669 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) { 1670 error = nfscl_wcc_data(nd, vp, nap, attrflagp, 1671 &wccflag, stuff); 1672 if (error) 1673 goto nfsmout; 1674 } 1675 if (!nd->nd_repstat) { 1676 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) { 1677 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED 1678 + NFSX_VERF); 1679 rlen = fxdr_unsigned(int, *tl++); 1680 if (rlen == 0) { 1681 error = NFSERR_IO; 1682 goto nfsmout; 1683 } else if (rlen < len) { 1684 backup = len - rlen; 1685 uio_iov_base_add(uiop, -(backup)); 1686 uio_iov_len_add(uiop, backup); 1687 uiop->uio_offset -= backup; 1688 uio_uio_resid_add(uiop, backup); 1689 len = rlen; 1690 } 1691 commit = fxdr_unsigned(int, *tl++); 1692 1693 /* 1694 * Return the lowest committment level 1695 * obtained by any of the RPCs. 1696 */ 1697 if (committed == NFSWRITE_FILESYNC) 1698 committed = commit; 1699 else if (committed == NFSWRITE_DATASYNC && 1700 commit == NFSWRITE_UNSTABLE) 1701 committed = commit; 1702 NFSLOCKMNT(nmp); 1703 if (!NFSHASWRITEVERF(nmp)) { 1704 NFSBCOPY((caddr_t)tl, 1705 (caddr_t)&nmp->nm_verf[0], 1706 NFSX_VERF); 1707 NFSSETWRITEVERF(nmp); 1708 } else if (NFSBCMP(tl, nmp->nm_verf, 1709 NFSX_VERF)) { 1710 *must_commit = 1; 1711 NFSBCOPY(tl, nmp->nm_verf, NFSX_VERF); 1712 } 1713 NFSUNLOCKMNT(nmp); 1714 } 1715 if (nd->nd_flag & ND_NFSV4) 1716 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1717 if (nd->nd_flag & (ND_NFSV2 | ND_NFSV4)) { 1718 error = nfsm_loadattr(nd, nap); 1719 if (!error) 1720 *attrflagp = NFS_LATTR_NOSHRINK; 1721 } 1722 } else { 1723 error = nd->nd_repstat; 1724 } 1725 if (error) 1726 goto nfsmout; 1727 NFSWRITERPC_SETTIME(wccflag, np, (nd->nd_flag & ND_NFSV4)); 1728 mbuf_freem(nd->nd_mrep); 1729 nd->nd_mrep = NULL; 1730 tsiz -= len; 1731 } 1732nfsmout: 1733 if (nd->nd_mrep != NULL) 1734 mbuf_freem(nd->nd_mrep); 1735 *iomode = committed; 1736 if (nd->nd_repstat && !error) 1737 error = nd->nd_repstat; 1738 return (error); 1739} 1740 1741/* 1742 * nfs mknod rpc 1743 * For NFS v2 this is a kludge. Use a create rpc but with the IFMT bits of the 1744 * mode set to specify the file type and the size field for rdev. 1745 */ 1746APPLESTATIC int 1747nfsrpc_mknod(vnode_t dvp, char *name, int namelen, struct vattr *vap, 1748 u_int32_t rdev, enum vtype vtyp, struct ucred *cred, NFSPROC_T *p, 1749 struct nfsvattr *dnap, struct nfsvattr *nnap, struct nfsfh **nfhpp, 1750 int *attrflagp, int *dattrflagp, void *dstuff) 1751{ 1752 u_int32_t *tl; 1753 int error = 0; 1754 struct nfsrv_descript nfsd, *nd = &nfsd; 1755 nfsattrbit_t attrbits; 1756 1757 *nfhpp = NULL; 1758 *attrflagp = 0; 1759 *dattrflagp = 0; 1760 if (namelen > NFS_MAXNAMLEN) 1761 return (ENAMETOOLONG); 1762 NFSCL_REQSTART(nd, NFSPROC_MKNOD, dvp); 1763 if (nd->nd_flag & ND_NFSV4) { 1764 if (vtyp == VBLK || vtyp == VCHR) { 1765 NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 1766 *tl++ = vtonfsv34_type(vtyp); 1767 *tl++ = txdr_unsigned(NFSMAJOR(rdev)); 1768 *tl = txdr_unsigned(NFSMINOR(rdev)); 1769 } else { 1770 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1771 *tl = vtonfsv34_type(vtyp); 1772 } 1773 } 1774 (void) nfsm_strtom(nd, name, namelen); 1775 if (nd->nd_flag & ND_NFSV3) { 1776 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1777 *tl = vtonfsv34_type(vtyp); 1778 } 1779 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) 1780 nfscl_fillsattr(nd, vap, dvp, 0, 0); 1781 if ((nd->nd_flag & ND_NFSV3) && 1782 (vtyp == VCHR || vtyp == VBLK)) { 1783 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1784 *tl++ = txdr_unsigned(NFSMAJOR(rdev)); 1785 *tl = txdr_unsigned(NFSMINOR(rdev)); 1786 } 1787 if (nd->nd_flag & ND_NFSV4) { 1788 NFSGETATTR_ATTRBIT(&attrbits); 1789 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1790 *tl++ = txdr_unsigned(NFSV4OP_GETFH); 1791 *tl = txdr_unsigned(NFSV4OP_GETATTR); 1792 (void) nfsrv_putattrbit(nd, &attrbits); 1793 } 1794 if (nd->nd_flag & ND_NFSV2) 1795 nfscl_fillsattr(nd, vap, dvp, NFSSATTR_SIZERDEV, rdev); 1796 error = nfscl_request(nd, dvp, p, cred, dstuff); 1797 if (error) 1798 return (error); 1799 if (nd->nd_flag & ND_NFSV4) 1800 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 1801 if (!nd->nd_repstat) { 1802 if (nd->nd_flag & ND_NFSV4) { 1803 NFSM_DISSECT(tl, u_int32_t *, 5 * NFSX_UNSIGNED); 1804 error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL); 1805 if (error) 1806 goto nfsmout; 1807 } 1808 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp); 1809 if (error) 1810 goto nfsmout; 1811 } 1812 if (nd->nd_flag & ND_NFSV3) 1813 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 1814 if (!error && nd->nd_repstat) 1815 error = nd->nd_repstat; 1816nfsmout: 1817 mbuf_freem(nd->nd_mrep); 1818 return (error); 1819} 1820 1821/* 1822 * nfs file create call 1823 * Mostly just call the approriate routine. (I separated out v4, so that 1824 * error recovery wouldn't be as difficult.) 1825 */ 1826APPLESTATIC int 1827nfsrpc_create(vnode_t dvp, char *name, int namelen, struct vattr *vap, 1828 nfsquad_t cverf, int fmode, struct ucred *cred, NFSPROC_T *p, 1829 struct nfsvattr *dnap, struct nfsvattr *nnap, struct nfsfh **nfhpp, 1830 int *attrflagp, int *dattrflagp, void *dstuff) 1831{ 1832 int error = 0, newone, expireret = 0, retrycnt, unlocked; 1833 struct nfsclowner *owp; 1834 struct nfscldeleg *dp; 1835 struct nfsmount *nmp = VFSTONFS(vnode_mount(dvp)); 1836 u_int32_t clidrev; 1837 1838 if (NFSHASNFSV4(nmp)) { 1839 retrycnt = 0; 1840 do { 1841 dp = NULL; 1842 error = nfscl_open(dvp, NULL, 0, (NFSV4OPEN_ACCESSWRITE | 1843 NFSV4OPEN_ACCESSREAD), 0, cred, p, &owp, NULL, &newone, 1844 NULL, 1); 1845 if (error) 1846 return (error); 1847 if (nmp->nm_clp != NULL) 1848 clidrev = nmp->nm_clp->nfsc_clientidrev; 1849 else 1850 clidrev = 0; 1851 error = nfsrpc_createv4(dvp, name, namelen, vap, cverf, fmode, 1852 owp, &dp, cred, p, dnap, nnap, nfhpp, attrflagp, dattrflagp, 1853 dstuff, &unlocked); 1854 /* 1855 * There is no need to invalidate cached attributes here, 1856 * since new post-delegation issue attributes are always 1857 * returned by nfsrpc_createv4() and these will update the 1858 * attribute cache. 1859 */ 1860 if (dp != NULL) 1861 (void) nfscl_deleg(nmp->nm_mountp, owp->nfsow_clp, 1862 (*nfhpp)->nfh_fh, (*nfhpp)->nfh_len, cred, p, &dp); 1863 nfscl_ownerrelease(owp, error, newone, unlocked); 1864 if (error == NFSERR_GRACE || error == NFSERR_STALECLIENTID || 1865 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 1866 error == NFSERR_BADSESSION) { 1867 (void) nfs_catnap(PZERO, error, "nfs_open"); 1868 } else if ((error == NFSERR_EXPIRED || 1869 error == NFSERR_BADSTATEID) && clidrev != 0) { 1870 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p); 1871 retrycnt++; 1872 } 1873 } while (error == NFSERR_GRACE || error == NFSERR_STALECLIENTID || 1874 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 1875 error == NFSERR_BADSESSION || 1876 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) && 1877 expireret == 0 && clidrev != 0 && retrycnt < 4)); 1878 if (error && retrycnt >= 4) 1879 error = EIO; 1880 } else { 1881 error = nfsrpc_createv23(dvp, name, namelen, vap, cverf, 1882 fmode, cred, p, dnap, nnap, nfhpp, attrflagp, dattrflagp, 1883 dstuff); 1884 } 1885 return (error); 1886} 1887 1888/* 1889 * The create rpc for v2 and 3. 1890 */ 1891static int 1892nfsrpc_createv23(vnode_t dvp, char *name, int namelen, struct vattr *vap, 1893 nfsquad_t cverf, int fmode, struct ucred *cred, NFSPROC_T *p, 1894 struct nfsvattr *dnap, struct nfsvattr *nnap, struct nfsfh **nfhpp, 1895 int *attrflagp, int *dattrflagp, void *dstuff) 1896{ 1897 u_int32_t *tl; 1898 int error = 0; 1899 struct nfsrv_descript nfsd, *nd = &nfsd; 1900 1901 *nfhpp = NULL; 1902 *attrflagp = 0; 1903 *dattrflagp = 0; 1904 if (namelen > NFS_MAXNAMLEN) 1905 return (ENAMETOOLONG); 1906 NFSCL_REQSTART(nd, NFSPROC_CREATE, dvp); 1907 (void) nfsm_strtom(nd, name, namelen); 1908 if (nd->nd_flag & ND_NFSV3) { 1909 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1910 if (fmode & O_EXCL) { 1911 *tl = txdr_unsigned(NFSCREATE_EXCLUSIVE); 1912 NFSM_BUILD(tl, u_int32_t *, NFSX_VERF); 1913 *tl++ = cverf.lval[0]; 1914 *tl = cverf.lval[1]; 1915 } else { 1916 *tl = txdr_unsigned(NFSCREATE_UNCHECKED); 1917 nfscl_fillsattr(nd, vap, dvp, 0, 0); 1918 } 1919 } else { 1920 nfscl_fillsattr(nd, vap, dvp, NFSSATTR_SIZE0, 0); 1921 } 1922 error = nfscl_request(nd, dvp, p, cred, dstuff); 1923 if (error) 1924 return (error); 1925 if (nd->nd_repstat == 0) { 1926 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp); 1927 if (error) 1928 goto nfsmout; 1929 } 1930 if (nd->nd_flag & ND_NFSV3) 1931 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 1932 if (nd->nd_repstat != 0 && error == 0) 1933 error = nd->nd_repstat; 1934nfsmout: 1935 mbuf_freem(nd->nd_mrep); 1936 return (error); 1937} 1938 1939static int 1940nfsrpc_createv4(vnode_t dvp, char *name, int namelen, struct vattr *vap, 1941 nfsquad_t cverf, int fmode, struct nfsclowner *owp, struct nfscldeleg **dpp, 1942 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap, 1943 struct nfsvattr *nnap, struct nfsfh **nfhpp, int *attrflagp, 1944 int *dattrflagp, void *dstuff, int *unlockedp) 1945{ 1946 u_int32_t *tl; 1947 int error = 0, deleg, newone, ret, acesize, limitby; 1948 struct nfsrv_descript nfsd, *nd = &nfsd; 1949 struct nfsclopen *op; 1950 struct nfscldeleg *dp = NULL; 1951 struct nfsnode *np; 1952 struct nfsfh *nfhp; 1953 nfsattrbit_t attrbits; 1954 nfsv4stateid_t stateid; 1955 u_int32_t rflags; 1956 struct nfsmount *nmp; 1957 1958 nmp = VFSTONFS(dvp->v_mount); 1959 np = VTONFS(dvp); 1960 *unlockedp = 0; 1961 *nfhpp = NULL; 1962 *dpp = NULL; 1963 *attrflagp = 0; 1964 *dattrflagp = 0; 1965 if (namelen > NFS_MAXNAMLEN) 1966 return (ENAMETOOLONG); 1967 NFSCL_REQSTART(nd, NFSPROC_CREATE, dvp); 1968 /* 1969 * For V4, this is actually an Open op. 1970 */ 1971 NFSM_BUILD(tl, u_int32_t *, 5 * NFSX_UNSIGNED); 1972 *tl++ = txdr_unsigned(owp->nfsow_seqid); 1973 *tl++ = txdr_unsigned(NFSV4OPEN_ACCESSWRITE | 1974 NFSV4OPEN_ACCESSREAD); 1975 *tl++ = txdr_unsigned(NFSV4OPEN_DENYNONE); 1976 *tl++ = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[0]; 1977 *tl = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[1]; 1978 (void) nfsm_strtom(nd, owp->nfsow_owner, NFSV4CL_LOCKNAMELEN); 1979 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1980 *tl++ = txdr_unsigned(NFSV4OPEN_CREATE); 1981 if (fmode & O_EXCL) { 1982 if (NFSHASNFSV4N(nmp)) { 1983 if (NFSHASSESSPERSIST(nmp)) { 1984 /* Use GUARDED for persistent sessions. */ 1985 *tl = txdr_unsigned(NFSCREATE_GUARDED); 1986 nfscl_fillsattr(nd, vap, dvp, 0, 0); 1987 } else { 1988 /* Otherwise, use EXCLUSIVE4_1. */ 1989 *tl = txdr_unsigned(NFSCREATE_EXCLUSIVE41); 1990 NFSM_BUILD(tl, u_int32_t *, NFSX_VERF); 1991 *tl++ = cverf.lval[0]; 1992 *tl = cverf.lval[1]; 1993 nfscl_fillsattr(nd, vap, dvp, 0, 0); 1994 } 1995 } else { 1996 /* NFSv4.0 */ 1997 *tl = txdr_unsigned(NFSCREATE_EXCLUSIVE); 1998 NFSM_BUILD(tl, u_int32_t *, NFSX_VERF); 1999 *tl++ = cverf.lval[0]; 2000 *tl = cverf.lval[1]; 2001 } 2002 } else { 2003 *tl = txdr_unsigned(NFSCREATE_UNCHECKED); 2004 nfscl_fillsattr(nd, vap, dvp, 0, 0); 2005 } 2006 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2007 *tl = txdr_unsigned(NFSV4OPEN_CLAIMNULL); 2008 (void) nfsm_strtom(nd, name, namelen); 2009 /* Get the new file's handle and attributes. */ 2010 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2011 *tl++ = txdr_unsigned(NFSV4OP_GETFH); 2012 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2013 NFSGETATTR_ATTRBIT(&attrbits); 2014 (void) nfsrv_putattrbit(nd, &attrbits); 2015 /* Get the directory's post-op attributes. */ 2016 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2017 *tl = txdr_unsigned(NFSV4OP_PUTFH); 2018 (void) nfsm_fhtom(nd, np->n_fhp->nfh_fh, np->n_fhp->nfh_len, 0); 2019 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2020 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2021 (void) nfsrv_putattrbit(nd, &attrbits); 2022 error = nfscl_request(nd, dvp, p, cred, dstuff); 2023 if (error) 2024 return (error); 2025 NFSCL_INCRSEQID(owp->nfsow_seqid, nd); 2026 if (nd->nd_repstat == 0) { 2027 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID + 2028 6 * NFSX_UNSIGNED); 2029 stateid.seqid = *tl++; 2030 stateid.other[0] = *tl++; 2031 stateid.other[1] = *tl++; 2032 stateid.other[2] = *tl; 2033 rflags = fxdr_unsigned(u_int32_t, *(tl + 6)); 2034 (void) nfsrv_getattrbits(nd, &attrbits, NULL, NULL); 2035 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2036 deleg = fxdr_unsigned(int, *tl); 2037 if (deleg == NFSV4OPEN_DELEGATEREAD || 2038 deleg == NFSV4OPEN_DELEGATEWRITE) { 2039 if (!(owp->nfsow_clp->nfsc_flags & 2040 NFSCLFLAGS_FIRSTDELEG)) 2041 owp->nfsow_clp->nfsc_flags |= 2042 (NFSCLFLAGS_FIRSTDELEG | NFSCLFLAGS_GOTDELEG); 2043 MALLOC(dp, struct nfscldeleg *, 2044 sizeof (struct nfscldeleg) + NFSX_V4FHMAX, 2045 M_NFSCLDELEG, M_WAITOK); 2046 LIST_INIT(&dp->nfsdl_owner); 2047 LIST_INIT(&dp->nfsdl_lock); 2048 dp->nfsdl_clp = owp->nfsow_clp; 2049 newnfs_copyincred(cred, &dp->nfsdl_cred); 2050 nfscl_lockinit(&dp->nfsdl_rwlock); 2051 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID + 2052 NFSX_UNSIGNED); 2053 dp->nfsdl_stateid.seqid = *tl++; 2054 dp->nfsdl_stateid.other[0] = *tl++; 2055 dp->nfsdl_stateid.other[1] = *tl++; 2056 dp->nfsdl_stateid.other[2] = *tl++; 2057 ret = fxdr_unsigned(int, *tl); 2058 if (deleg == NFSV4OPEN_DELEGATEWRITE) { 2059 dp->nfsdl_flags = NFSCLDL_WRITE; 2060 /* 2061 * Indicates how much the file can grow. 2062 */ 2063 NFSM_DISSECT(tl, u_int32_t *, 2064 3 * NFSX_UNSIGNED); 2065 limitby = fxdr_unsigned(int, *tl++); 2066 switch (limitby) { 2067 case NFSV4OPEN_LIMITSIZE: 2068 dp->nfsdl_sizelimit = fxdr_hyper(tl); 2069 break; 2070 case NFSV4OPEN_LIMITBLOCKS: 2071 dp->nfsdl_sizelimit = 2072 fxdr_unsigned(u_int64_t, *tl++); 2073 dp->nfsdl_sizelimit *= 2074 fxdr_unsigned(u_int64_t, *tl); 2075 break; 2076 default: 2077 error = NFSERR_BADXDR; 2078 goto nfsmout; 2079 }; 2080 } else { 2081 dp->nfsdl_flags = NFSCLDL_READ; 2082 } 2083 if (ret) 2084 dp->nfsdl_flags |= NFSCLDL_RECALL; 2085 error = nfsrv_dissectace(nd, &dp->nfsdl_ace, &ret, 2086 &acesize, p); 2087 if (error) 2088 goto nfsmout; 2089 } else if (deleg != NFSV4OPEN_DELEGATENONE) { 2090 error = NFSERR_BADXDR; 2091 goto nfsmout; 2092 } 2093 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp); 2094 if (error) 2095 goto nfsmout; 2096 /* Get rid of the PutFH and Getattr status values. */ 2097 NFSM_DISSECT(tl, u_int32_t *, 4 * NFSX_UNSIGNED); 2098 /* Load the directory attributes. */ 2099 error = nfsm_loadattr(nd, dnap); 2100 if (error) 2101 goto nfsmout; 2102 *dattrflagp = 1; 2103 if (dp != NULL && *attrflagp) { 2104 dp->nfsdl_change = nnap->na_filerev; 2105 dp->nfsdl_modtime = nnap->na_mtime; 2106 dp->nfsdl_flags |= NFSCLDL_MODTIMESET; 2107 } 2108 /* 2109 * We can now complete the Open state. 2110 */ 2111 nfhp = *nfhpp; 2112 if (dp != NULL) { 2113 dp->nfsdl_fhlen = nfhp->nfh_len; 2114 NFSBCOPY(nfhp->nfh_fh, dp->nfsdl_fh, nfhp->nfh_len); 2115 } 2116 /* 2117 * Get an Open structure that will be 2118 * attached to the OpenOwner, acquired already. 2119 */ 2120 error = nfscl_open(dvp, nfhp->nfh_fh, nfhp->nfh_len, 2121 (NFSV4OPEN_ACCESSWRITE | NFSV4OPEN_ACCESSREAD), 0, 2122 cred, p, NULL, &op, &newone, NULL, 0); 2123 if (error) 2124 goto nfsmout; 2125 op->nfso_stateid = stateid; 2126 newnfs_copyincred(cred, &op->nfso_cred); 2127 if ((rflags & NFSV4OPEN_RESULTCONFIRM)) { 2128 do { 2129 ret = nfsrpc_openconfirm(dvp, nfhp->nfh_fh, 2130 nfhp->nfh_len, op, cred, p); 2131 if (ret == NFSERR_DELAY) 2132 (void) nfs_catnap(PZERO, ret, "nfs_create"); 2133 } while (ret == NFSERR_DELAY); 2134 error = ret; 2135 } 2136 2137 /* 2138 * If the server is handing out delegations, but we didn't 2139 * get one because an OpenConfirm was required, try the 2140 * Open again, to get a delegation. This is a harmless no-op, 2141 * from a server's point of view. 2142 */ 2143 if ((rflags & NFSV4OPEN_RESULTCONFIRM) && 2144 (owp->nfsow_clp->nfsc_flags & NFSCLFLAGS_GOTDELEG) && 2145 !error && dp == NULL) { 2146 do { 2147 ret = nfsrpc_openrpc(VFSTONFS(vnode_mount(dvp)), dvp, 2148 np->n_fhp->nfh_fh, np->n_fhp->nfh_len, 2149 nfhp->nfh_fh, nfhp->nfh_len, 2150 (NFSV4OPEN_ACCESSWRITE | NFSV4OPEN_ACCESSREAD), op, 2151 name, namelen, &dp, 0, 0x0, cred, p, 0, 1); 2152 if (ret == NFSERR_DELAY) 2153 (void) nfs_catnap(PZERO, ret, "nfs_crt2"); 2154 } while (ret == NFSERR_DELAY); 2155 if (ret) { 2156 if (dp != NULL) 2157 FREE((caddr_t)dp, M_NFSCLDELEG); 2158 if (ret == NFSERR_STALECLIENTID || 2159 ret == NFSERR_STALEDONTRECOVER || 2160 ret == NFSERR_BADSESSION) 2161 error = ret; 2162 } 2163 } 2164 nfscl_openrelease(op, error, newone); 2165 *unlockedp = 1; 2166 } 2167 if (nd->nd_repstat != 0 && error == 0) 2168 error = nd->nd_repstat; 2169 if (error == NFSERR_STALECLIENTID || error == NFSERR_BADSESSION) 2170 nfscl_initiate_recovery(owp->nfsow_clp); 2171nfsmout: 2172 if (!error) 2173 *dpp = dp; 2174 else if (dp != NULL) 2175 FREE((caddr_t)dp, M_NFSCLDELEG); 2176 mbuf_freem(nd->nd_mrep); 2177 return (error); 2178} 2179 2180/* 2181 * Nfs remove rpc 2182 */ 2183APPLESTATIC int 2184nfsrpc_remove(vnode_t dvp, char *name, int namelen, vnode_t vp, 2185 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap, int *dattrflagp, 2186 void *dstuff) 2187{ 2188 u_int32_t *tl; 2189 struct nfsrv_descript nfsd, *nd = &nfsd; 2190 struct nfsnode *np; 2191 struct nfsmount *nmp; 2192 nfsv4stateid_t dstateid; 2193 int error, ret = 0, i; 2194 2195 *dattrflagp = 0; 2196 if (namelen > NFS_MAXNAMLEN) 2197 return (ENAMETOOLONG); 2198 nmp = VFSTONFS(vnode_mount(dvp)); 2199tryagain: 2200 if (NFSHASNFSV4(nmp) && ret == 0) { 2201 ret = nfscl_removedeleg(vp, p, &dstateid); 2202 if (ret == 1) { 2203 NFSCL_REQSTART(nd, NFSPROC_RETDELEGREMOVE, vp); 2204 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID + 2205 NFSX_UNSIGNED); 2206 if (NFSHASNFSV4N(nmp)) 2207 *tl++ = 0; 2208 else 2209 *tl++ = dstateid.seqid; 2210 *tl++ = dstateid.other[0]; 2211 *tl++ = dstateid.other[1]; 2212 *tl++ = dstateid.other[2]; 2213 *tl = txdr_unsigned(NFSV4OP_PUTFH); 2214 np = VTONFS(dvp); 2215 (void) nfsm_fhtom(nd, np->n_fhp->nfh_fh, 2216 np->n_fhp->nfh_len, 0); 2217 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2218 *tl = txdr_unsigned(NFSV4OP_REMOVE); 2219 } 2220 } else { 2221 ret = 0; 2222 } 2223 if (ret == 0) 2224 NFSCL_REQSTART(nd, NFSPROC_REMOVE, dvp); 2225 (void) nfsm_strtom(nd, name, namelen); 2226 error = nfscl_request(nd, dvp, p, cred, dstuff); 2227 if (error) 2228 return (error); 2229 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) { 2230 /* For NFSv4, parse out any Delereturn replies. */ 2231 if (ret > 0 && nd->nd_repstat != 0 && 2232 (nd->nd_flag & ND_NOMOREDATA)) { 2233 /* 2234 * If the Delegreturn failed, try again without 2235 * it. The server will Recall, as required. 2236 */ 2237 mbuf_freem(nd->nd_mrep); 2238 goto tryagain; 2239 } 2240 for (i = 0; i < (ret * 2); i++) { 2241 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == 2242 ND_NFSV4) { 2243 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2244 if (*(tl + 1)) 2245 nd->nd_flag |= ND_NOMOREDATA; 2246 } 2247 } 2248 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 2249 } 2250 if (nd->nd_repstat && !error) 2251 error = nd->nd_repstat; 2252nfsmout: 2253 mbuf_freem(nd->nd_mrep); 2254 return (error); 2255} 2256 2257/* 2258 * Do an nfs rename rpc. 2259 */ 2260APPLESTATIC int 2261nfsrpc_rename(vnode_t fdvp, vnode_t fvp, char *fnameptr, int fnamelen, 2262 vnode_t tdvp, vnode_t tvp, char *tnameptr, int tnamelen, struct ucred *cred, 2263 NFSPROC_T *p, struct nfsvattr *fnap, struct nfsvattr *tnap, 2264 int *fattrflagp, int *tattrflagp, void *fstuff, void *tstuff) 2265{ 2266 u_int32_t *tl; 2267 struct nfsrv_descript nfsd, *nd = &nfsd; 2268 struct nfsmount *nmp; 2269 struct nfsnode *np; 2270 nfsattrbit_t attrbits; 2271 nfsv4stateid_t fdstateid, tdstateid; 2272 int error = 0, ret = 0, gottd = 0, gotfd = 0, i; 2273 2274 *fattrflagp = 0; 2275 *tattrflagp = 0; 2276 nmp = VFSTONFS(vnode_mount(fdvp)); 2277 if (fnamelen > NFS_MAXNAMLEN || tnamelen > NFS_MAXNAMLEN) 2278 return (ENAMETOOLONG); 2279tryagain: 2280 if (NFSHASNFSV4(nmp) && ret == 0) { 2281 ret = nfscl_renamedeleg(fvp, &fdstateid, &gotfd, tvp, 2282 &tdstateid, &gottd, p); 2283 if (gotfd && gottd) { 2284 NFSCL_REQSTART(nd, NFSPROC_RETDELEGRENAME2, fvp); 2285 } else if (gotfd) { 2286 NFSCL_REQSTART(nd, NFSPROC_RETDELEGRENAME1, fvp); 2287 } else if (gottd) { 2288 NFSCL_REQSTART(nd, NFSPROC_RETDELEGRENAME1, tvp); 2289 } 2290 if (gotfd) { 2291 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID); 2292 if (NFSHASNFSV4N(nmp)) 2293 *tl++ = 0; 2294 else 2295 *tl++ = fdstateid.seqid; 2296 *tl++ = fdstateid.other[0]; 2297 *tl++ = fdstateid.other[1]; 2298 *tl = fdstateid.other[2]; 2299 if (gottd) { 2300 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2301 *tl = txdr_unsigned(NFSV4OP_PUTFH); 2302 np = VTONFS(tvp); 2303 (void) nfsm_fhtom(nd, np->n_fhp->nfh_fh, 2304 np->n_fhp->nfh_len, 0); 2305 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2306 *tl = txdr_unsigned(NFSV4OP_DELEGRETURN); 2307 } 2308 } 2309 if (gottd) { 2310 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID); 2311 if (NFSHASNFSV4N(nmp)) 2312 *tl++ = 0; 2313 else 2314 *tl++ = tdstateid.seqid; 2315 *tl++ = tdstateid.other[0]; 2316 *tl++ = tdstateid.other[1]; 2317 *tl = tdstateid.other[2]; 2318 } 2319 if (ret > 0) { 2320 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2321 *tl = txdr_unsigned(NFSV4OP_PUTFH); 2322 np = VTONFS(fdvp); 2323 (void) nfsm_fhtom(nd, np->n_fhp->nfh_fh, 2324 np->n_fhp->nfh_len, 0); 2325 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2326 *tl = txdr_unsigned(NFSV4OP_SAVEFH); 2327 } 2328 } else { 2329 ret = 0; 2330 } 2331 if (ret == 0) 2332 NFSCL_REQSTART(nd, NFSPROC_RENAME, fdvp); 2333 if (nd->nd_flag & ND_NFSV4) { 2334 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2335 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2336 NFSWCCATTR_ATTRBIT(&attrbits); 2337 (void) nfsrv_putattrbit(nd, &attrbits); 2338 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2339 *tl = txdr_unsigned(NFSV4OP_PUTFH); 2340 (void) nfsm_fhtom(nd, VTONFS(tdvp)->n_fhp->nfh_fh, 2341 VTONFS(tdvp)->n_fhp->nfh_len, 0); 2342 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2343 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2344 (void) nfsrv_putattrbit(nd, &attrbits); 2345 nd->nd_flag |= ND_V4WCCATTR; 2346 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2347 *tl = txdr_unsigned(NFSV4OP_RENAME); 2348 } 2349 (void) nfsm_strtom(nd, fnameptr, fnamelen); 2350 if (!(nd->nd_flag & ND_NFSV4)) 2351 (void) nfsm_fhtom(nd, VTONFS(tdvp)->n_fhp->nfh_fh, 2352 VTONFS(tdvp)->n_fhp->nfh_len, 0); 2353 (void) nfsm_strtom(nd, tnameptr, tnamelen); 2354 error = nfscl_request(nd, fdvp, p, cred, fstuff); 2355 if (error) 2356 return (error); 2357 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) { 2358 /* For NFSv4, parse out any Delereturn replies. */ 2359 if (ret > 0 && nd->nd_repstat != 0 && 2360 (nd->nd_flag & ND_NOMOREDATA)) { 2361 /* 2362 * If the Delegreturn failed, try again without 2363 * it. The server will Recall, as required. 2364 */ 2365 mbuf_freem(nd->nd_mrep); 2366 goto tryagain; 2367 } 2368 for (i = 0; i < (ret * 2); i++) { 2369 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == 2370 ND_NFSV4) { 2371 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2372 if (*(tl + 1)) { 2373 if (i == 0 && ret > 1) { 2374 /* 2375 * If the Delegreturn failed, try again 2376 * without it. The server will Recall, as 2377 * required. 2378 * If ret > 1, the first iteration of this 2379 * loop is the second DelegReturn result. 2380 */ 2381 mbuf_freem(nd->nd_mrep); 2382 goto tryagain; 2383 } else { 2384 nd->nd_flag |= ND_NOMOREDATA; 2385 } 2386 } 2387 } 2388 } 2389 /* Now, the first wcc attribute reply. */ 2390 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == ND_NFSV4) { 2391 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2392 if (*(tl + 1)) 2393 nd->nd_flag |= ND_NOMOREDATA; 2394 } 2395 error = nfscl_wcc_data(nd, fdvp, fnap, fattrflagp, NULL, 2396 fstuff); 2397 /* and the second wcc attribute reply. */ 2398 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == ND_NFSV4 && 2399 !error) { 2400 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2401 if (*(tl + 1)) 2402 nd->nd_flag |= ND_NOMOREDATA; 2403 } 2404 if (!error) 2405 error = nfscl_wcc_data(nd, tdvp, tnap, tattrflagp, 2406 NULL, tstuff); 2407 } 2408 if (nd->nd_repstat && !error) 2409 error = nd->nd_repstat; 2410nfsmout: 2411 mbuf_freem(nd->nd_mrep); 2412 return (error); 2413} 2414 2415/* 2416 * nfs hard link create rpc 2417 */ 2418APPLESTATIC int 2419nfsrpc_link(vnode_t dvp, vnode_t vp, char *name, int namelen, 2420 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap, 2421 struct nfsvattr *nap, int *attrflagp, int *dattrflagp, void *dstuff) 2422{ 2423 u_int32_t *tl; 2424 struct nfsrv_descript nfsd, *nd = &nfsd; 2425 nfsattrbit_t attrbits; 2426 int error = 0; 2427 2428 *attrflagp = 0; 2429 *dattrflagp = 0; 2430 if (namelen > NFS_MAXNAMLEN) 2431 return (ENAMETOOLONG); 2432 NFSCL_REQSTART(nd, NFSPROC_LINK, vp); 2433 if (nd->nd_flag & ND_NFSV4) { 2434 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2435 *tl = txdr_unsigned(NFSV4OP_PUTFH); 2436 } 2437 (void) nfsm_fhtom(nd, VTONFS(dvp)->n_fhp->nfh_fh, 2438 VTONFS(dvp)->n_fhp->nfh_len, 0); 2439 if (nd->nd_flag & ND_NFSV4) { 2440 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2441 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2442 NFSWCCATTR_ATTRBIT(&attrbits); 2443 (void) nfsrv_putattrbit(nd, &attrbits); 2444 nd->nd_flag |= ND_V4WCCATTR; 2445 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2446 *tl = txdr_unsigned(NFSV4OP_LINK); 2447 } 2448 (void) nfsm_strtom(nd, name, namelen); 2449 error = nfscl_request(nd, vp, p, cred, dstuff); 2450 if (error) 2451 return (error); 2452 if (nd->nd_flag & ND_NFSV3) { 2453 error = nfscl_postop_attr(nd, nap, attrflagp, dstuff); 2454 if (!error) 2455 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, 2456 NULL, dstuff); 2457 } else if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == ND_NFSV4) { 2458 /* 2459 * First, parse out the PutFH and Getattr result. 2460 */ 2461 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2462 if (!(*(tl + 1))) 2463 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2464 if (*(tl + 1)) 2465 nd->nd_flag |= ND_NOMOREDATA; 2466 /* 2467 * Get the pre-op attributes. 2468 */ 2469 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 2470 } 2471 if (nd->nd_repstat && !error) 2472 error = nd->nd_repstat; 2473nfsmout: 2474 mbuf_freem(nd->nd_mrep); 2475 return (error); 2476} 2477 2478/* 2479 * nfs symbolic link create rpc 2480 */ 2481APPLESTATIC int 2482nfsrpc_symlink(vnode_t dvp, char *name, int namelen, char *target, 2483 struct vattr *vap, struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap, 2484 struct nfsvattr *nnap, struct nfsfh **nfhpp, int *attrflagp, 2485 int *dattrflagp, void *dstuff) 2486{ 2487 u_int32_t *tl; 2488 struct nfsrv_descript nfsd, *nd = &nfsd; 2489 struct nfsmount *nmp; 2490 int slen, error = 0; 2491 2492 *nfhpp = NULL; 2493 *attrflagp = 0; 2494 *dattrflagp = 0; 2495 nmp = VFSTONFS(vnode_mount(dvp)); 2496 slen = strlen(target); 2497 if (slen > NFS_MAXPATHLEN || namelen > NFS_MAXNAMLEN) 2498 return (ENAMETOOLONG); 2499 NFSCL_REQSTART(nd, NFSPROC_SYMLINK, dvp); 2500 if (nd->nd_flag & ND_NFSV4) { 2501 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2502 *tl = txdr_unsigned(NFLNK); 2503 (void) nfsm_strtom(nd, target, slen); 2504 } 2505 (void) nfsm_strtom(nd, name, namelen); 2506 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) 2507 nfscl_fillsattr(nd, vap, dvp, 0, 0); 2508 if (!(nd->nd_flag & ND_NFSV4)) 2509 (void) nfsm_strtom(nd, target, slen); 2510 if (nd->nd_flag & ND_NFSV2) 2511 nfscl_fillsattr(nd, vap, dvp, NFSSATTR_SIZENEG1, 0); 2512 error = nfscl_request(nd, dvp, p, cred, dstuff); 2513 if (error) 2514 return (error); 2515 if (nd->nd_flag & ND_NFSV4) 2516 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 2517 if ((nd->nd_flag & ND_NFSV3) && !error) { 2518 if (!nd->nd_repstat) 2519 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp); 2520 if (!error) 2521 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, 2522 NULL, dstuff); 2523 } 2524 if (nd->nd_repstat && !error) 2525 error = nd->nd_repstat; 2526 mbuf_freem(nd->nd_mrep); 2527 /* 2528 * Kludge: Map EEXIST => 0 assuming that it is a reply to a retry. 2529 */ 2530 if (error == EEXIST) 2531 error = 0; 2532 return (error); 2533} 2534 2535/* 2536 * nfs make dir rpc 2537 */ 2538APPLESTATIC int 2539nfsrpc_mkdir(vnode_t dvp, char *name, int namelen, struct vattr *vap, 2540 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap, 2541 struct nfsvattr *nnap, struct nfsfh **nfhpp, int *attrflagp, 2542 int *dattrflagp, void *dstuff) 2543{ 2544 u_int32_t *tl; 2545 struct nfsrv_descript nfsd, *nd = &nfsd; 2546 nfsattrbit_t attrbits; 2547 int error = 0; 2548 2549 *nfhpp = NULL; 2550 *attrflagp = 0; 2551 *dattrflagp = 0; 2552 if (namelen > NFS_MAXNAMLEN) 2553 return (ENAMETOOLONG); 2554 NFSCL_REQSTART(nd, NFSPROC_MKDIR, dvp); 2555 if (nd->nd_flag & ND_NFSV4) { 2556 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2557 *tl = txdr_unsigned(NFDIR); 2558 } 2559 (void) nfsm_strtom(nd, name, namelen); 2560 nfscl_fillsattr(nd, vap, dvp, NFSSATTR_SIZENEG1, 0); 2561 if (nd->nd_flag & ND_NFSV4) { 2562 NFSGETATTR_ATTRBIT(&attrbits); 2563 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2564 *tl++ = txdr_unsigned(NFSV4OP_GETFH); 2565 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2566 (void) nfsrv_putattrbit(nd, &attrbits); 2567 } 2568 error = nfscl_request(nd, dvp, p, cred, dstuff); 2569 if (error) 2570 return (error); 2571 if (nd->nd_flag & ND_NFSV4) 2572 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 2573 if (!nd->nd_repstat && !error) { 2574 if (nd->nd_flag & ND_NFSV4) { 2575 NFSM_DISSECT(tl, u_int32_t *, 5 * NFSX_UNSIGNED); 2576 error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL); 2577 } 2578 if (!error) 2579 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp); 2580 } 2581 if ((nd->nd_flag & ND_NFSV3) && !error) 2582 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 2583 if (nd->nd_repstat && !error) 2584 error = nd->nd_repstat; 2585nfsmout: 2586 mbuf_freem(nd->nd_mrep); 2587 /* 2588 * Kludge: Map EEXIST => 0 assuming that you have a reply to a retry. 2589 */ 2590 if (error == EEXIST) 2591 error = 0; 2592 return (error); 2593} 2594 2595/* 2596 * nfs remove directory call 2597 */ 2598APPLESTATIC int 2599nfsrpc_rmdir(vnode_t dvp, char *name, int namelen, struct ucred *cred, 2600 NFSPROC_T *p, struct nfsvattr *dnap, int *dattrflagp, void *dstuff) 2601{ 2602 struct nfsrv_descript nfsd, *nd = &nfsd; 2603 int error = 0; 2604 2605 *dattrflagp = 0; 2606 if (namelen > NFS_MAXNAMLEN) 2607 return (ENAMETOOLONG); 2608 NFSCL_REQSTART(nd, NFSPROC_RMDIR, dvp); 2609 (void) nfsm_strtom(nd, name, namelen); 2610 error = nfscl_request(nd, dvp, p, cred, dstuff); 2611 if (error) 2612 return (error); 2613 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) 2614 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 2615 if (nd->nd_repstat && !error) 2616 error = nd->nd_repstat; 2617 mbuf_freem(nd->nd_mrep); 2618 /* 2619 * Kludge: Map ENOENT => 0 assuming that you have a reply to a retry. 2620 */ 2621 if (error == ENOENT) 2622 error = 0; 2623 return (error); 2624} 2625 2626/* 2627 * Readdir rpc. 2628 * Always returns with either uio_resid unchanged, if you are at the 2629 * end of the directory, or uio_resid == 0, with all DIRBLKSIZ chunks 2630 * filled in. 2631 * I felt this would allow caching of directory blocks more easily 2632 * than returning a pertially filled block. 2633 * Directory offset cookies: 2634 * Oh my, what to do with them... 2635 * I can think of three ways to deal with them: 2636 * 1 - have the layer above these RPCs maintain a map between logical 2637 * directory byte offsets and the NFS directory offset cookies 2638 * 2 - pass the opaque directory offset cookies up into userland 2639 * and let the libc functions deal with them, via the system call 2640 * 3 - return them to userland in the "struct dirent", so future versions 2641 * of libc can use them and do whatever is necessary to amke things work 2642 * above these rpc calls, in the meantime 2643 * For now, I do #3 by "hiding" the directory offset cookies after the 2644 * d_name field in struct dirent. This is space inside d_reclen that 2645 * will be ignored by anything that doesn't know about them. 2646 * The directory offset cookies are filled in as the last 8 bytes of 2647 * each directory entry, after d_name. Someday, the userland libc 2648 * functions may be able to use these. In the meantime, it satisfies 2649 * OpenBSD's requirements for cookies being returned. 2650 * If expects the directory offset cookie for the read to be in uio_offset 2651 * and returns the one for the next entry after this directory block in 2652 * there, as well. 2653 */ 2654APPLESTATIC int 2655nfsrpc_readdir(vnode_t vp, struct uio *uiop, nfsuint64 *cookiep, 2656 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, 2657 int *eofp, void *stuff) 2658{ 2659 int len, left; 2660 struct dirent *dp = NULL; 2661 u_int32_t *tl; 2662 nfsquad_t cookie, ncookie; 2663 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 2664 struct nfsnode *dnp = VTONFS(vp); 2665 struct nfsvattr nfsva; 2666 struct nfsrv_descript nfsd, *nd = &nfsd; 2667 int error = 0, tlen, more_dirs = 1, blksiz = 0, bigenough = 1; 2668 int reqsize, tryformoredirs = 1, readsize, eof = 0, gotmnton = 0; 2669 long dotfileid, dotdotfileid = 0; 2670 u_int32_t fakefileno = 0xffffffff, rderr; 2671 char *cp; 2672 nfsattrbit_t attrbits, dattrbits; 2673 u_int32_t *tl2 = NULL; 2674 size_t tresid; 2675 2676 KASSERT(uiop->uio_iovcnt == 1 && 2677 (uio_uio_resid(uiop) & (DIRBLKSIZ - 1)) == 0, 2678 ("nfs readdirrpc bad uio")); 2679 2680 /* 2681 * There is no point in reading a lot more than uio_resid, however 2682 * adding one additional DIRBLKSIZ makes sense. Since uio_resid 2683 * and nm_readdirsize are both exact multiples of DIRBLKSIZ, this 2684 * will never make readsize > nm_readdirsize. 2685 */ 2686 readsize = nmp->nm_readdirsize; 2687 if (readsize > uio_uio_resid(uiop)) 2688 readsize = uio_uio_resid(uiop) + DIRBLKSIZ; 2689 2690 *attrflagp = 0; 2691 if (eofp) 2692 *eofp = 0; 2693 tresid = uio_uio_resid(uiop); 2694 cookie.lval[0] = cookiep->nfsuquad[0]; 2695 cookie.lval[1] = cookiep->nfsuquad[1]; 2696 nd->nd_mrep = NULL; 2697 2698 /* 2699 * For NFSv4, first create the "." and ".." entries. 2700 */ 2701 if (NFSHASNFSV4(nmp)) { 2702 reqsize = 6 * NFSX_UNSIGNED; 2703 NFSGETATTR_ATTRBIT(&dattrbits); 2704 NFSZERO_ATTRBIT(&attrbits); 2705 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_FILEID); 2706 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_TYPE); 2707 if (NFSISSET_ATTRBIT(&dnp->n_vattr.na_suppattr, 2708 NFSATTRBIT_MOUNTEDONFILEID)) { 2709 NFSSETBIT_ATTRBIT(&attrbits, 2710 NFSATTRBIT_MOUNTEDONFILEID); 2711 gotmnton = 1; 2712 } else { 2713 /* 2714 * Must fake it. Use the fileno, except when the 2715 * fsid is != to that of the directory. For that 2716 * case, generate a fake fileno that is not the same. 2717 */ 2718 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_FSID); 2719 gotmnton = 0; 2720 } 2721 2722 /* 2723 * Joy, oh joy. For V4 we get to hand craft '.' and '..'. 2724 */ 2725 if (uiop->uio_offset == 0) { 2726 NFSCL_REQSTART(nd, NFSPROC_LOOKUPP, vp); 2727 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2728 *tl++ = txdr_unsigned(NFSV4OP_GETFH); 2729 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2730 (void) nfsrv_putattrbit(nd, &attrbits); 2731 error = nfscl_request(nd, vp, p, cred, stuff); 2732 if (error) 2733 return (error); 2734 dotfileid = 0; /* Fake out the compiler. */ 2735 if ((nd->nd_flag & ND_NOMOREDATA) == 0) { 2736 error = nfsm_loadattr(nd, &nfsva); 2737 if (error != 0) 2738 goto nfsmout; 2739 dotfileid = nfsva.na_fileid; 2740 } 2741 if (nd->nd_repstat == 0) { 2742 NFSM_DISSECT(tl, u_int32_t *, 5 * NFSX_UNSIGNED); 2743 len = fxdr_unsigned(int, *(tl + 4)); 2744 if (len > 0 && len <= NFSX_V4FHMAX) 2745 error = nfsm_advance(nd, NFSM_RNDUP(len), -1); 2746 else 2747 error = EPERM; 2748 if (!error) { 2749 NFSM_DISSECT(tl, u_int32_t *, 2*NFSX_UNSIGNED); 2750 nfsva.na_mntonfileno = 0xffffffff; 2751 error = nfsv4_loadattr(nd, NULL, &nfsva, NULL, 2752 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0, 2753 NULL, NULL, NULL, p, cred); 2754 if (error) { 2755 dotdotfileid = dotfileid; 2756 } else if (gotmnton) { 2757 if (nfsva.na_mntonfileno != 0xffffffff) 2758 dotdotfileid = nfsva.na_mntonfileno; 2759 else 2760 dotdotfileid = nfsva.na_fileid; 2761 } else if (nfsva.na_filesid[0] == 2762 dnp->n_vattr.na_filesid[0] && 2763 nfsva.na_filesid[1] == 2764 dnp->n_vattr.na_filesid[1]) { 2765 dotdotfileid = nfsva.na_fileid; 2766 } else { 2767 do { 2768 fakefileno--; 2769 } while (fakefileno == 2770 nfsva.na_fileid); 2771 dotdotfileid = fakefileno; 2772 } 2773 } 2774 } else if (nd->nd_repstat == NFSERR_NOENT) { 2775 /* 2776 * Lookupp returns NFSERR_NOENT when we are 2777 * at the root, so just use the current dir. 2778 */ 2779 nd->nd_repstat = 0; 2780 dotdotfileid = dotfileid; 2781 } else { 2782 error = nd->nd_repstat; 2783 } 2784 mbuf_freem(nd->nd_mrep); 2785 if (error) 2786 return (error); 2787 nd->nd_mrep = NULL; 2788 dp = (struct dirent *) CAST_DOWN(caddr_t, uio_iov_base(uiop)); 2789 dp->d_type = DT_DIR; 2790 dp->d_fileno = dotfileid; 2791 dp->d_namlen = 1; 2792 dp->d_name[0] = '.'; 2793 dp->d_name[1] = '\0'; 2794 dp->d_reclen = DIRENT_SIZE(dp) + NFSX_HYPER; 2795 /* 2796 * Just make these offset cookie 0. 2797 */ 2798 tl = (u_int32_t *)&dp->d_name[4]; 2799 *tl++ = 0; 2800 *tl = 0; 2801 blksiz += dp->d_reclen; 2802 uio_uio_resid_add(uiop, -(dp->d_reclen)); 2803 uiop->uio_offset += dp->d_reclen; 2804 uio_iov_base_add(uiop, dp->d_reclen); 2805 uio_iov_len_add(uiop, -(dp->d_reclen)); 2806 dp = (struct dirent *) CAST_DOWN(caddr_t, uio_iov_base(uiop)); 2807 dp->d_type = DT_DIR; 2808 dp->d_fileno = dotdotfileid; 2809 dp->d_namlen = 2; 2810 dp->d_name[0] = '.'; 2811 dp->d_name[1] = '.'; 2812 dp->d_name[2] = '\0'; 2813 dp->d_reclen = DIRENT_SIZE(dp) + NFSX_HYPER; 2814 /* 2815 * Just make these offset cookie 0. 2816 */ 2817 tl = (u_int32_t *)&dp->d_name[4]; 2818 *tl++ = 0; 2819 *tl = 0; 2820 blksiz += dp->d_reclen; 2821 uio_uio_resid_add(uiop, -(dp->d_reclen)); 2822 uiop->uio_offset += dp->d_reclen; 2823 uio_iov_base_add(uiop, dp->d_reclen); 2824 uio_iov_len_add(uiop, -(dp->d_reclen)); 2825 } 2826 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_RDATTRERROR); 2827 } else { 2828 reqsize = 5 * NFSX_UNSIGNED; 2829 } 2830 2831 2832 /* 2833 * Loop around doing readdir rpc's of size readsize. 2834 * The stopping criteria is EOF or buffer full. 2835 */ 2836 while (more_dirs && bigenough) { 2837 *attrflagp = 0; 2838 NFSCL_REQSTART(nd, NFSPROC_READDIR, vp); 2839 if (nd->nd_flag & ND_NFSV2) { 2840 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2841 *tl++ = cookie.lval[1]; 2842 *tl = txdr_unsigned(readsize); 2843 } else { 2844 NFSM_BUILD(tl, u_int32_t *, reqsize); 2845 *tl++ = cookie.lval[0]; 2846 *tl++ = cookie.lval[1]; 2847 if (cookie.qval == 0) { 2848 *tl++ = 0; 2849 *tl++ = 0; 2850 } else { 2851 NFSLOCKNODE(dnp); 2852 *tl++ = dnp->n_cookieverf.nfsuquad[0]; 2853 *tl++ = dnp->n_cookieverf.nfsuquad[1]; 2854 NFSUNLOCKNODE(dnp); 2855 } 2856 if (nd->nd_flag & ND_NFSV4) { 2857 *tl++ = txdr_unsigned(readsize); 2858 *tl = txdr_unsigned(readsize); 2859 (void) nfsrv_putattrbit(nd, &attrbits); 2860 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2861 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2862 (void) nfsrv_putattrbit(nd, &dattrbits); 2863 } else { 2864 *tl = txdr_unsigned(readsize); 2865 } 2866 } 2867 error = nfscl_request(nd, vp, p, cred, stuff); 2868 if (error) 2869 return (error); 2870 if (!(nd->nd_flag & ND_NFSV2)) { 2871 if (nd->nd_flag & ND_NFSV3) 2872 error = nfscl_postop_attr(nd, nap, attrflagp, 2873 stuff); 2874 if (!nd->nd_repstat && !error) { 2875 NFSM_DISSECT(tl, u_int32_t *, NFSX_HYPER); 2876 NFSLOCKNODE(dnp); 2877 dnp->n_cookieverf.nfsuquad[0] = *tl++; 2878 dnp->n_cookieverf.nfsuquad[1] = *tl; 2879 NFSUNLOCKNODE(dnp); 2880 } 2881 } 2882 if (nd->nd_repstat || error) { 2883 if (!error) 2884 error = nd->nd_repstat; 2885 goto nfsmout; 2886 } 2887 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2888 more_dirs = fxdr_unsigned(int, *tl); 2889 if (!more_dirs) 2890 tryformoredirs = 0; 2891 2892 /* loop thru the dir entries, doctoring them to 4bsd form */ 2893 while (more_dirs && bigenough) { 2894 if (nd->nd_flag & ND_NFSV4) { 2895 NFSM_DISSECT(tl, u_int32_t *, 3*NFSX_UNSIGNED); 2896 ncookie.lval[0] = *tl++; 2897 ncookie.lval[1] = *tl++; 2898 len = fxdr_unsigned(int, *tl); 2899 } else if (nd->nd_flag & ND_NFSV3) { 2900 NFSM_DISSECT(tl, u_int32_t *, 3*NFSX_UNSIGNED); 2901 nfsva.na_fileid = fxdr_hyper(tl); 2902 tl += 2; 2903 len = fxdr_unsigned(int, *tl); 2904 } else { 2905 NFSM_DISSECT(tl, u_int32_t *, 2*NFSX_UNSIGNED); 2906 nfsva.na_fileid = 2907 fxdr_unsigned(long, *tl++); 2908 len = fxdr_unsigned(int, *tl); 2909 } 2910 if (len <= 0 || len > NFS_MAXNAMLEN) { 2911 error = EBADRPC; 2912 goto nfsmout; 2913 } 2914 tlen = NFSM_RNDUP(len); 2915 if (tlen == len) 2916 tlen += 4; /* To ensure null termination */ 2917 left = DIRBLKSIZ - blksiz; 2918 if ((int)(tlen + DIRHDSIZ + NFSX_HYPER) > left) { 2919 dp->d_reclen += left; 2920 uio_iov_base_add(uiop, left); 2921 uio_iov_len_add(uiop, -(left)); 2922 uio_uio_resid_add(uiop, -(left)); 2923 uiop->uio_offset += left; 2924 blksiz = 0; 2925 } 2926 if ((int)(tlen + DIRHDSIZ + NFSX_HYPER) > uio_uio_resid(uiop)) 2927 bigenough = 0; 2928 if (bigenough) { 2929 dp = (struct dirent *) CAST_DOWN(caddr_t, uio_iov_base(uiop)); 2930 dp->d_namlen = len; 2931 dp->d_reclen = tlen + DIRHDSIZ + NFSX_HYPER; 2932 dp->d_type = DT_UNKNOWN; 2933 blksiz += dp->d_reclen; 2934 if (blksiz == DIRBLKSIZ) 2935 blksiz = 0; 2936 uio_uio_resid_add(uiop, -(DIRHDSIZ)); 2937 uiop->uio_offset += DIRHDSIZ; 2938 uio_iov_base_add(uiop, DIRHDSIZ); 2939 uio_iov_len_add(uiop, -(DIRHDSIZ)); 2940 error = nfsm_mbufuio(nd, uiop, len); 2941 if (error) 2942 goto nfsmout; 2943 cp = CAST_DOWN(caddr_t, uio_iov_base(uiop)); 2944 tlen -= len; 2945 *cp = '\0'; /* null terminate */ 2946 cp += tlen; /* points to cookie storage */ 2947 tl2 = (u_int32_t *)cp; 2948 uio_iov_base_add(uiop, (tlen + NFSX_HYPER)); 2949 uio_iov_len_add(uiop, -(tlen + NFSX_HYPER)); 2950 uio_uio_resid_add(uiop, -(tlen + NFSX_HYPER)); 2951 uiop->uio_offset += (tlen + NFSX_HYPER); 2952 } else { 2953 error = nfsm_advance(nd, NFSM_RNDUP(len), -1); 2954 if (error) 2955 goto nfsmout; 2956 } 2957 if (nd->nd_flag & ND_NFSV4) { 2958 rderr = 0; 2959 nfsva.na_mntonfileno = 0xffffffff; 2960 error = nfsv4_loadattr(nd, NULL, &nfsva, NULL, 2961 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0, 2962 NULL, NULL, &rderr, p, cred); 2963 if (error) 2964 goto nfsmout; 2965 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2966 } else if (nd->nd_flag & ND_NFSV3) { 2967 NFSM_DISSECT(tl, u_int32_t *, 3*NFSX_UNSIGNED); 2968 ncookie.lval[0] = *tl++; 2969 ncookie.lval[1] = *tl++; 2970 } else { 2971 NFSM_DISSECT(tl, u_int32_t *, 2*NFSX_UNSIGNED); 2972 ncookie.lval[0] = 0; 2973 ncookie.lval[1] = *tl++; 2974 } 2975 if (bigenough) { 2976 if (nd->nd_flag & ND_NFSV4) { 2977 if (rderr) { 2978 dp->d_fileno = 0; 2979 } else { 2980 if (gotmnton) { 2981 if (nfsva.na_mntonfileno != 0xffffffff) 2982 dp->d_fileno = nfsva.na_mntonfileno; 2983 else 2984 dp->d_fileno = nfsva.na_fileid; 2985 } else if (nfsva.na_filesid[0] == 2986 dnp->n_vattr.na_filesid[0] && 2987 nfsva.na_filesid[1] == 2988 dnp->n_vattr.na_filesid[1]) { 2989 dp->d_fileno = nfsva.na_fileid; 2990 } else { 2991 do { 2992 fakefileno--; 2993 } while (fakefileno == 2994 nfsva.na_fileid); 2995 dp->d_fileno = fakefileno; 2996 } 2997 dp->d_type = vtonfs_dtype(nfsva.na_type); 2998 } 2999 } else { 3000 dp->d_fileno = nfsva.na_fileid; 3001 } 3002 *tl2++ = cookiep->nfsuquad[0] = cookie.lval[0] = 3003 ncookie.lval[0]; 3004 *tl2 = cookiep->nfsuquad[1] = cookie.lval[1] = 3005 ncookie.lval[1]; 3006 } 3007 more_dirs = fxdr_unsigned(int, *tl); 3008 } 3009 /* 3010 * If at end of rpc data, get the eof boolean 3011 */ 3012 if (!more_dirs) { 3013 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 3014 eof = fxdr_unsigned(int, *tl); 3015 if (tryformoredirs) 3016 more_dirs = !eof; 3017 if (nd->nd_flag & ND_NFSV4) { 3018 error = nfscl_postop_attr(nd, nap, attrflagp, 3019 stuff); 3020 if (error) 3021 goto nfsmout; 3022 } 3023 } 3024 mbuf_freem(nd->nd_mrep); 3025 nd->nd_mrep = NULL; 3026 } 3027 /* 3028 * Fill last record, iff any, out to a multiple of DIRBLKSIZ 3029 * by increasing d_reclen for the last record. 3030 */ 3031 if (blksiz > 0) { 3032 left = DIRBLKSIZ - blksiz; 3033 dp->d_reclen += left; 3034 uio_iov_base_add(uiop, left); 3035 uio_iov_len_add(uiop, -(left)); 3036 uio_uio_resid_add(uiop, -(left)); 3037 uiop->uio_offset += left; 3038 } 3039 3040 /* 3041 * If returning no data, assume end of file. 3042 * If not bigenough, return not end of file, since you aren't 3043 * returning all the data 3044 * Otherwise, return the eof flag from the server. 3045 */ 3046 if (eofp) { 3047 if (tresid == ((size_t)(uio_uio_resid(uiop)))) 3048 *eofp = 1; 3049 else if (!bigenough) 3050 *eofp = 0; 3051 else 3052 *eofp = eof; 3053 } 3054 3055 /* 3056 * Add extra empty records to any remaining DIRBLKSIZ chunks. 3057 */ 3058 while (uio_uio_resid(uiop) > 0 && ((size_t)(uio_uio_resid(uiop))) != tresid) { 3059 dp = (struct dirent *) CAST_DOWN(caddr_t, uio_iov_base(uiop)); 3060 dp->d_type = DT_UNKNOWN; 3061 dp->d_fileno = 0; 3062 dp->d_namlen = 0; 3063 dp->d_name[0] = '\0'; 3064 tl = (u_int32_t *)&dp->d_name[4]; 3065 *tl++ = cookie.lval[0]; 3066 *tl = cookie.lval[1]; 3067 dp->d_reclen = DIRBLKSIZ; 3068 uio_iov_base_add(uiop, DIRBLKSIZ); 3069 uio_iov_len_add(uiop, -(DIRBLKSIZ)); 3070 uio_uio_resid_add(uiop, -(DIRBLKSIZ)); 3071 uiop->uio_offset += DIRBLKSIZ; 3072 } 3073 3074nfsmout: 3075 if (nd->nd_mrep != NULL) 3076 mbuf_freem(nd->nd_mrep); 3077 return (error); 3078} 3079 3080#ifndef APPLE 3081/* 3082 * NFS V3 readdir plus RPC. Used in place of nfsrpc_readdir(). 3083 * (Also used for NFS V4 when mount flag set.) 3084 * (ditto above w.r.t. multiple of DIRBLKSIZ, etc.) 3085 */ 3086APPLESTATIC int 3087nfsrpc_readdirplus(vnode_t vp, struct uio *uiop, nfsuint64 *cookiep, 3088 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, 3089 int *eofp, void *stuff) 3090{ 3091 int len, left; 3092 struct dirent *dp = NULL; 3093 u_int32_t *tl; 3094 vnode_t newvp = NULLVP; 3095 struct nfsrv_descript nfsd, *nd = &nfsd; 3096 struct nameidata nami, *ndp = &nami; 3097 struct componentname *cnp = &ndp->ni_cnd; 3098 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 3099 struct nfsnode *dnp = VTONFS(vp), *np; 3100 struct nfsvattr nfsva; 3101 struct nfsfh *nfhp; 3102 nfsquad_t cookie, ncookie; 3103 int error = 0, tlen, more_dirs = 1, blksiz = 0, bigenough = 1; 3104 int attrflag, tryformoredirs = 1, eof = 0, gotmnton = 0; 3105 int isdotdot = 0, unlocknewvp = 0; 3106 long dotfileid, dotdotfileid = 0, fileno = 0; 3107 char *cp; 3108 nfsattrbit_t attrbits, dattrbits; 3109 size_t tresid; 3110 u_int32_t *tl2 = NULL, fakefileno = 0xffffffff, rderr; 3111 struct timespec dctime; 3112 3113 KASSERT(uiop->uio_iovcnt == 1 && 3114 (uio_uio_resid(uiop) & (DIRBLKSIZ - 1)) == 0, 3115 ("nfs readdirplusrpc bad uio")); 3116 timespecclear(&dctime); 3117 *attrflagp = 0; 3118 if (eofp != NULL) 3119 *eofp = 0; 3120 ndp->ni_dvp = vp; 3121 nd->nd_mrep = NULL; 3122 cookie.lval[0] = cookiep->nfsuquad[0]; 3123 cookie.lval[1] = cookiep->nfsuquad[1]; 3124 tresid = uio_uio_resid(uiop); 3125 3126 /* 3127 * For NFSv4, first create the "." and ".." entries. 3128 */ 3129 if (NFSHASNFSV4(nmp)) { 3130 NFSGETATTR_ATTRBIT(&dattrbits); 3131 NFSZERO_ATTRBIT(&attrbits); 3132 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_FILEID); 3133 if (NFSISSET_ATTRBIT(&dnp->n_vattr.na_suppattr, 3134 NFSATTRBIT_MOUNTEDONFILEID)) { 3135 NFSSETBIT_ATTRBIT(&attrbits, 3136 NFSATTRBIT_MOUNTEDONFILEID); 3137 gotmnton = 1; 3138 } else { 3139 /* 3140 * Must fake it. Use the fileno, except when the 3141 * fsid is != to that of the directory. For that 3142 * case, generate a fake fileno that is not the same. 3143 */ 3144 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_FSID); 3145 gotmnton = 0; 3146 } 3147 3148 /* 3149 * Joy, oh joy. For V4 we get to hand craft '.' and '..'. 3150 */ 3151 if (uiop->uio_offset == 0) { 3152 NFSCL_REQSTART(nd, NFSPROC_LOOKUPP, vp); 3153 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 3154 *tl++ = txdr_unsigned(NFSV4OP_GETFH); 3155 *tl = txdr_unsigned(NFSV4OP_GETATTR); 3156 (void) nfsrv_putattrbit(nd, &attrbits); 3157 error = nfscl_request(nd, vp, p, cred, stuff); 3158 if (error) 3159 return (error); 3160 dotfileid = 0; /* Fake out the compiler. */ 3161 if ((nd->nd_flag & ND_NOMOREDATA) == 0) { 3162 error = nfsm_loadattr(nd, &nfsva); 3163 if (error != 0) 3164 goto nfsmout; 3165 dctime = nfsva.na_ctime; 3166 dotfileid = nfsva.na_fileid; 3167 } 3168 if (nd->nd_repstat == 0) { 3169 NFSM_DISSECT(tl, u_int32_t *, 5 * NFSX_UNSIGNED); 3170 len = fxdr_unsigned(int, *(tl + 4)); 3171 if (len > 0 && len <= NFSX_V4FHMAX) 3172 error = nfsm_advance(nd, NFSM_RNDUP(len), -1); 3173 else 3174 error = EPERM; 3175 if (!error) { 3176 NFSM_DISSECT(tl, u_int32_t *, 2*NFSX_UNSIGNED); 3177 nfsva.na_mntonfileno = 0xffffffff; 3178 error = nfsv4_loadattr(nd, NULL, &nfsva, NULL, 3179 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0, 3180 NULL, NULL, NULL, p, cred); 3181 if (error) { 3182 dotdotfileid = dotfileid; 3183 } else if (gotmnton) { 3184 if (nfsva.na_mntonfileno != 0xffffffff) 3185 dotdotfileid = nfsva.na_mntonfileno; 3186 else 3187 dotdotfileid = nfsva.na_fileid; 3188 } else if (nfsva.na_filesid[0] == 3189 dnp->n_vattr.na_filesid[0] && 3190 nfsva.na_filesid[1] == 3191 dnp->n_vattr.na_filesid[1]) { 3192 dotdotfileid = nfsva.na_fileid; 3193 } else { 3194 do { 3195 fakefileno--; 3196 } while (fakefileno == 3197 nfsva.na_fileid); 3198 dotdotfileid = fakefileno; 3199 } 3200 } 3201 } else if (nd->nd_repstat == NFSERR_NOENT) { 3202 /* 3203 * Lookupp returns NFSERR_NOENT when we are 3204 * at the root, so just use the current dir. 3205 */ 3206 nd->nd_repstat = 0; 3207 dotdotfileid = dotfileid; 3208 } else { 3209 error = nd->nd_repstat; 3210 } 3211 mbuf_freem(nd->nd_mrep); 3212 if (error) 3213 return (error); 3214 nd->nd_mrep = NULL; 3215 dp = (struct dirent *)uio_iov_base(uiop); 3216 dp->d_type = DT_DIR; 3217 dp->d_fileno = dotfileid; 3218 dp->d_namlen = 1; 3219 dp->d_name[0] = '.'; 3220 dp->d_name[1] = '\0'; 3221 dp->d_reclen = DIRENT_SIZE(dp) + NFSX_HYPER; 3222 /* 3223 * Just make these offset cookie 0. 3224 */ 3225 tl = (u_int32_t *)&dp->d_name[4]; 3226 *tl++ = 0; 3227 *tl = 0; 3228 blksiz += dp->d_reclen; 3229 uio_uio_resid_add(uiop, -(dp->d_reclen)); 3230 uiop->uio_offset += dp->d_reclen; 3231 uio_iov_base_add(uiop, dp->d_reclen); 3232 uio_iov_len_add(uiop, -(dp->d_reclen)); 3233 dp = (struct dirent *)uio_iov_base(uiop); 3234 dp->d_type = DT_DIR; 3235 dp->d_fileno = dotdotfileid; 3236 dp->d_namlen = 2; 3237 dp->d_name[0] = '.'; 3238 dp->d_name[1] = '.'; 3239 dp->d_name[2] = '\0'; 3240 dp->d_reclen = DIRENT_SIZE(dp) + NFSX_HYPER; 3241 /* 3242 * Just make these offset cookie 0. 3243 */ 3244 tl = (u_int32_t *)&dp->d_name[4]; 3245 *tl++ = 0; 3246 *tl = 0; 3247 blksiz += dp->d_reclen; 3248 uio_uio_resid_add(uiop, -(dp->d_reclen)); 3249 uiop->uio_offset += dp->d_reclen; 3250 uio_iov_base_add(uiop, dp->d_reclen); 3251 uio_iov_len_add(uiop, -(dp->d_reclen)); 3252 } 3253 NFSREADDIRPLUS_ATTRBIT(&attrbits); 3254 if (gotmnton) 3255 NFSSETBIT_ATTRBIT(&attrbits, 3256 NFSATTRBIT_MOUNTEDONFILEID); 3257 } 3258 3259 /* 3260 * Loop around doing readdir rpc's of size nm_readdirsize. 3261 * The stopping criteria is EOF or buffer full. 3262 */ 3263 while (more_dirs && bigenough) { 3264 *attrflagp = 0; 3265 NFSCL_REQSTART(nd, NFSPROC_READDIRPLUS, vp); 3266 NFSM_BUILD(tl, u_int32_t *, 6 * NFSX_UNSIGNED); 3267 *tl++ = cookie.lval[0]; 3268 *tl++ = cookie.lval[1]; 3269 if (cookie.qval == 0) { 3270 *tl++ = 0; 3271 *tl++ = 0; 3272 } else { 3273 NFSLOCKNODE(dnp); 3274 *tl++ = dnp->n_cookieverf.nfsuquad[0]; 3275 *tl++ = dnp->n_cookieverf.nfsuquad[1]; 3276 NFSUNLOCKNODE(dnp); 3277 } 3278 *tl++ = txdr_unsigned(nmp->nm_readdirsize); 3279 *tl = txdr_unsigned(nmp->nm_readdirsize); 3280 if (nd->nd_flag & ND_NFSV4) { 3281 (void) nfsrv_putattrbit(nd, &attrbits); 3282 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 3283 *tl = txdr_unsigned(NFSV4OP_GETATTR); 3284 (void) nfsrv_putattrbit(nd, &dattrbits); 3285 } 3286 error = nfscl_request(nd, vp, p, cred, stuff); 3287 if (error) 3288 return (error); 3289 if (nd->nd_flag & ND_NFSV3) 3290 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 3291 if (nd->nd_repstat || error) { 3292 if (!error) 3293 error = nd->nd_repstat; 3294 goto nfsmout; 3295 } 3296 if ((nd->nd_flag & ND_NFSV3) != 0 && *attrflagp != 0) 3297 dctime = nap->na_ctime; 3298 NFSM_DISSECT(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 3299 NFSLOCKNODE(dnp); 3300 dnp->n_cookieverf.nfsuquad[0] = *tl++; 3301 dnp->n_cookieverf.nfsuquad[1] = *tl++; 3302 NFSUNLOCKNODE(dnp); 3303 more_dirs = fxdr_unsigned(int, *tl); 3304 if (!more_dirs) 3305 tryformoredirs = 0; 3306 3307 /* loop thru the dir entries, doctoring them to 4bsd form */ 3308 while (more_dirs && bigenough) { 3309 NFSM_DISSECT(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 3310 if (nd->nd_flag & ND_NFSV4) { 3311 ncookie.lval[0] = *tl++; 3312 ncookie.lval[1] = *tl++; 3313 } else { 3314 fileno = fxdr_unsigned(long, *++tl); 3315 tl++; 3316 } 3317 len = fxdr_unsigned(int, *tl); 3318 if (len <= 0 || len > NFS_MAXNAMLEN) { 3319 error = EBADRPC; 3320 goto nfsmout; 3321 } 3322 tlen = NFSM_RNDUP(len); 3323 if (tlen == len) 3324 tlen += 4; /* To ensure null termination */ 3325 left = DIRBLKSIZ - blksiz; 3326 if ((tlen + DIRHDSIZ + NFSX_HYPER) > left) { 3327 dp->d_reclen += left; 3328 uio_iov_base_add(uiop, left); 3329 uio_iov_len_add(uiop, -(left)); 3330 uio_uio_resid_add(uiop, -(left)); 3331 uiop->uio_offset += left; 3332 blksiz = 0; 3333 } 3334 if ((tlen + DIRHDSIZ + NFSX_HYPER) > uio_uio_resid(uiop)) 3335 bigenough = 0; 3336 if (bigenough) { 3337 dp = (struct dirent *)uio_iov_base(uiop); 3338 dp->d_namlen = len; 3339 dp->d_reclen = tlen + DIRHDSIZ + NFSX_HYPER; 3340 dp->d_type = DT_UNKNOWN; 3341 blksiz += dp->d_reclen; 3342 if (blksiz == DIRBLKSIZ) 3343 blksiz = 0; 3344 uio_uio_resid_add(uiop, -(DIRHDSIZ)); 3345 uiop->uio_offset += DIRHDSIZ; 3346 uio_iov_base_add(uiop, DIRHDSIZ); 3347 uio_iov_len_add(uiop, -(DIRHDSIZ)); 3348 cnp->cn_nameptr = uio_iov_base(uiop); 3349 cnp->cn_namelen = len; 3350 NFSCNHASHZERO(cnp); 3351 error = nfsm_mbufuio(nd, uiop, len); 3352 if (error) 3353 goto nfsmout; 3354 cp = uio_iov_base(uiop); 3355 tlen -= len; 3356 *cp = '\0'; 3357 cp += tlen; /* points to cookie storage */ 3358 tl2 = (u_int32_t *)cp; 3359 if (len == 2 && cnp->cn_nameptr[0] == '.' && 3360 cnp->cn_nameptr[1] == '.') 3361 isdotdot = 1; 3362 else 3363 isdotdot = 0; 3364 uio_iov_base_add(uiop, (tlen + NFSX_HYPER)); 3365 uio_iov_len_add(uiop, -(tlen + NFSX_HYPER)); 3366 uio_uio_resid_add(uiop, -(tlen + NFSX_HYPER)); 3367 uiop->uio_offset += (tlen + NFSX_HYPER); 3368 } else { 3369 error = nfsm_advance(nd, NFSM_RNDUP(len), -1); 3370 if (error) 3371 goto nfsmout; 3372 } 3373 nfhp = NULL; 3374 if (nd->nd_flag & ND_NFSV3) { 3375 NFSM_DISSECT(tl, u_int32_t *, 3*NFSX_UNSIGNED); 3376 ncookie.lval[0] = *tl++; 3377 ncookie.lval[1] = *tl++; 3378 attrflag = fxdr_unsigned(int, *tl); 3379 if (attrflag) { 3380 error = nfsm_loadattr(nd, &nfsva); 3381 if (error) 3382 goto nfsmout; 3383 } 3384 NFSM_DISSECT(tl,u_int32_t *,NFSX_UNSIGNED); 3385 if (*tl) { 3386 error = nfsm_getfh(nd, &nfhp); 3387 if (error) 3388 goto nfsmout; 3389 } 3390 if (!attrflag && nfhp != NULL) { 3391 FREE((caddr_t)nfhp, M_NFSFH); 3392 nfhp = NULL; 3393 } 3394 } else { 3395 rderr = 0; 3396 nfsva.na_mntonfileno = 0xffffffff; 3397 error = nfsv4_loadattr(nd, NULL, &nfsva, &nfhp, 3398 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0, 3399 NULL, NULL, &rderr, p, cred); 3400 if (error) 3401 goto nfsmout; 3402 } 3403 3404 if (bigenough) { 3405 if (nd->nd_flag & ND_NFSV4) { 3406 if (rderr) { 3407 dp->d_fileno = 0; 3408 } else if (gotmnton) { 3409 if (nfsva.na_mntonfileno != 0xffffffff) 3410 dp->d_fileno = nfsva.na_mntonfileno; 3411 else 3412 dp->d_fileno = nfsva.na_fileid; 3413 } else if (nfsva.na_filesid[0] == 3414 dnp->n_vattr.na_filesid[0] && 3415 nfsva.na_filesid[1] == 3416 dnp->n_vattr.na_filesid[1]) { 3417 dp->d_fileno = nfsva.na_fileid; 3418 } else { 3419 do { 3420 fakefileno--; 3421 } while (fakefileno == 3422 nfsva.na_fileid); 3423 dp->d_fileno = fakefileno; 3424 } 3425 } else { 3426 dp->d_fileno = fileno; 3427 } 3428 *tl2++ = cookiep->nfsuquad[0] = cookie.lval[0] = 3429 ncookie.lval[0]; 3430 *tl2 = cookiep->nfsuquad[1] = cookie.lval[1] = 3431 ncookie.lval[1]; 3432 3433 if (nfhp != NULL) { 3434 if (NFSRV_CMPFH(nfhp->nfh_fh, nfhp->nfh_len, 3435 dnp->n_fhp->nfh_fh, dnp->n_fhp->nfh_len)) { 3436 VREF(vp); 3437 newvp = vp; 3438 unlocknewvp = 0; 3439 FREE((caddr_t)nfhp, M_NFSFH); 3440 np = dnp; 3441 } else if (isdotdot != 0) { 3442 /* 3443 * Skip doing a nfscl_nget() call for "..". 3444 * There's a race between acquiring the nfs 3445 * node here and lookups that look for the 3446 * directory being read (in the parent). 3447 * It would try to get a lock on ".." here, 3448 * owning the lock on the directory being 3449 * read. Lookup will hold the lock on ".." 3450 * and try to acquire the lock on the 3451 * directory being read. 3452 * If the directory is unlocked/relocked, 3453 * then there is a LOR with the buflock 3454 * vp is relocked. 3455 */ 3456 free(nfhp, M_NFSFH); 3457 } else { 3458 error = nfscl_nget(vnode_mount(vp), vp, 3459 nfhp, cnp, p, &np, NULL, LK_EXCLUSIVE); 3460 if (!error) { 3461 newvp = NFSTOV(np); 3462 unlocknewvp = 1; 3463 } 3464 } 3465 nfhp = NULL; 3466 if (newvp != NULLVP) { 3467 error = nfscl_loadattrcache(&newvp, 3468 &nfsva, NULL, NULL, 0, 0); 3469 if (error) { 3470 if (unlocknewvp) 3471 vput(newvp); 3472 else 3473 vrele(newvp); 3474 goto nfsmout; 3475 } 3476 dp->d_type = 3477 vtonfs_dtype(np->n_vattr.na_type); 3478 ndp->ni_vp = newvp; 3479 NFSCNHASH(cnp, HASHINIT); 3480 if (cnp->cn_namelen <= NCHNAMLEN && 3481 (newvp->v_type != VDIR || 3482 dctime.tv_sec != 0)) { 3483 cache_enter_time(ndp->ni_dvp, 3484 ndp->ni_vp, cnp, 3485 &nfsva.na_ctime, 3486 newvp->v_type != VDIR ? NULL : 3487 &dctime); 3488 } 3489 if (unlocknewvp) 3490 vput(newvp); 3491 else 3492 vrele(newvp); 3493 newvp = NULLVP; 3494 } 3495 } 3496 } else if (nfhp != NULL) { 3497 FREE((caddr_t)nfhp, M_NFSFH); 3498 } 3499 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 3500 more_dirs = fxdr_unsigned(int, *tl); 3501 } 3502 /* 3503 * If at end of rpc data, get the eof boolean 3504 */ 3505 if (!more_dirs) { 3506 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 3507 eof = fxdr_unsigned(int, *tl); 3508 if (tryformoredirs) 3509 more_dirs = !eof; 3510 if (nd->nd_flag & ND_NFSV4) { 3511 error = nfscl_postop_attr(nd, nap, attrflagp, 3512 stuff); 3513 if (error) 3514 goto nfsmout; 3515 } 3516 } 3517 mbuf_freem(nd->nd_mrep); 3518 nd->nd_mrep = NULL; 3519 } 3520 /* 3521 * Fill last record, iff any, out to a multiple of DIRBLKSIZ 3522 * by increasing d_reclen for the last record. 3523 */ 3524 if (blksiz > 0) { 3525 left = DIRBLKSIZ - blksiz; 3526 dp->d_reclen += left; 3527 uio_iov_base_add(uiop, left); 3528 uio_iov_len_add(uiop, -(left)); 3529 uio_uio_resid_add(uiop, -(left)); 3530 uiop->uio_offset += left; 3531 } 3532 3533 /* 3534 * If returning no data, assume end of file. 3535 * If not bigenough, return not end of file, since you aren't 3536 * returning all the data 3537 * Otherwise, return the eof flag from the server. 3538 */ 3539 if (eofp != NULL) { 3540 if (tresid == uio_uio_resid(uiop)) 3541 *eofp = 1; 3542 else if (!bigenough) 3543 *eofp = 0; 3544 else 3545 *eofp = eof; 3546 } 3547 3548 /* 3549 * Add extra empty records to any remaining DIRBLKSIZ chunks. 3550 */ 3551 while (uio_uio_resid(uiop) > 0 && uio_uio_resid(uiop) != tresid) { 3552 dp = (struct dirent *)uio_iov_base(uiop); 3553 dp->d_type = DT_UNKNOWN; 3554 dp->d_fileno = 0; 3555 dp->d_namlen = 0; 3556 dp->d_name[0] = '\0'; 3557 tl = (u_int32_t *)&dp->d_name[4]; 3558 *tl++ = cookie.lval[0]; 3559 *tl = cookie.lval[1]; 3560 dp->d_reclen = DIRBLKSIZ; 3561 uio_iov_base_add(uiop, DIRBLKSIZ); 3562 uio_iov_len_add(uiop, -(DIRBLKSIZ)); 3563 uio_uio_resid_add(uiop, -(DIRBLKSIZ)); 3564 uiop->uio_offset += DIRBLKSIZ; 3565 } 3566 3567nfsmout: 3568 if (nd->nd_mrep != NULL) 3569 mbuf_freem(nd->nd_mrep); 3570 return (error); 3571} 3572#endif /* !APPLE */ 3573 3574/* 3575 * Nfs commit rpc 3576 */ 3577APPLESTATIC int 3578nfsrpc_commit(vnode_t vp, u_quad_t offset, int cnt, struct ucred *cred, 3579 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff) 3580{ 3581 u_int32_t *tl; 3582 struct nfsrv_descript nfsd, *nd = &nfsd; 3583 nfsattrbit_t attrbits; 3584 int error; 3585 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 3586 3587 *attrflagp = 0; 3588 NFSCL_REQSTART(nd, NFSPROC_COMMIT, vp); 3589 NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 3590 txdr_hyper(offset, tl); 3591 tl += 2; 3592 *tl = txdr_unsigned(cnt); 3593 if (nd->nd_flag & ND_NFSV4) { 3594 /* 3595 * And do a Getattr op. 3596 */ 3597 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 3598 *tl = txdr_unsigned(NFSV4OP_GETATTR); 3599 NFSGETATTR_ATTRBIT(&attrbits); 3600 (void) nfsrv_putattrbit(nd, &attrbits); 3601 } 3602 error = nfscl_request(nd, vp, p, cred, stuff); 3603 if (error) 3604 return (error); 3605 error = nfscl_wcc_data(nd, vp, nap, attrflagp, NULL, stuff); 3606 if (!error && !nd->nd_repstat) { 3607 NFSM_DISSECT(tl, u_int32_t *, NFSX_VERF); 3608 NFSLOCKMNT(nmp); 3609 if (NFSBCMP(nmp->nm_verf, tl, NFSX_VERF)) { 3610 NFSBCOPY(tl, nmp->nm_verf, NFSX_VERF); 3611 nd->nd_repstat = NFSERR_STALEWRITEVERF; 3612 } 3613 NFSUNLOCKMNT(nmp); 3614 if (nd->nd_flag & ND_NFSV4) 3615 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 3616 } 3617nfsmout: 3618 if (!error && nd->nd_repstat) 3619 error = nd->nd_repstat; 3620 mbuf_freem(nd->nd_mrep); 3621 return (error); 3622} 3623 3624/* 3625 * NFS byte range lock rpc. 3626 * (Mostly just calls one of the three lower level RPC routines.) 3627 */ 3628APPLESTATIC int 3629nfsrpc_advlock(vnode_t vp, off_t size, int op, struct flock *fl, 3630 int reclaim, struct ucred *cred, NFSPROC_T *p, void *id, int flags) 3631{ 3632 struct nfscllockowner *lp; 3633 struct nfsclclient *clp; 3634 struct nfsfh *nfhp; 3635 struct nfsrv_descript nfsd, *nd = &nfsd; 3636 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 3637 u_int64_t off, len; 3638 off_t start, end; 3639 u_int32_t clidrev = 0; 3640 int error = 0, newone = 0, expireret = 0, retrycnt, donelocally; 3641 int callcnt, dorpc; 3642 3643 /* 3644 * Convert the flock structure into a start and end and do POSIX 3645 * bounds checking. 3646 */ 3647 switch (fl->l_whence) { 3648 case SEEK_SET: 3649 case SEEK_CUR: 3650 /* 3651 * Caller is responsible for adding any necessary offset 3652 * when SEEK_CUR is used. 3653 */ 3654 start = fl->l_start; 3655 off = fl->l_start; 3656 break; 3657 case SEEK_END: 3658 start = size + fl->l_start; 3659 off = size + fl->l_start; 3660 break; 3661 default: 3662 return (EINVAL); 3663 }; 3664 if (start < 0) 3665 return (EINVAL); 3666 if (fl->l_len != 0) { 3667 end = start + fl->l_len - 1; 3668 if (end < start) 3669 return (EINVAL); 3670 } 3671 3672 len = fl->l_len; 3673 if (len == 0) 3674 len = NFS64BITSSET; 3675 retrycnt = 0; 3676 do { 3677 nd->nd_repstat = 0; 3678 if (op == F_GETLK) { 3679 error = nfscl_getcl(vnode_mount(vp), cred, p, 1, &clp); 3680 if (error) 3681 return (error); 3682 error = nfscl_lockt(vp, clp, off, len, fl, p, id, flags); 3683 if (!error) { 3684 clidrev = clp->nfsc_clientidrev; 3685 error = nfsrpc_lockt(nd, vp, clp, off, len, fl, cred, 3686 p, id, flags); 3687 } else if (error == -1) { 3688 error = 0; 3689 } 3690 nfscl_clientrelease(clp); 3691 } else if (op == F_UNLCK && fl->l_type == F_UNLCK) { 3692 /* 3693 * We must loop around for all lockowner cases. 3694 */ 3695 callcnt = 0; 3696 error = nfscl_getcl(vnode_mount(vp), cred, p, 1, &clp); 3697 if (error) 3698 return (error); 3699 do { 3700 error = nfscl_relbytelock(vp, off, len, cred, p, callcnt, 3701 clp, id, flags, &lp, &dorpc); 3702 /* 3703 * If it returns a NULL lp, we're done. 3704 */ 3705 if (lp == NULL) { 3706 if (callcnt == 0) 3707 nfscl_clientrelease(clp); 3708 else 3709 nfscl_releasealllocks(clp, vp, p, id, flags); 3710 return (error); 3711 } 3712 if (nmp->nm_clp != NULL) 3713 clidrev = nmp->nm_clp->nfsc_clientidrev; 3714 else 3715 clidrev = 0; 3716 /* 3717 * If the server doesn't support Posix lock semantics, 3718 * only allow locks on the entire file, since it won't 3719 * handle overlapping byte ranges. 3720 * There might still be a problem when a lock 3721 * upgrade/downgrade (read<->write) occurs, since the 3722 * server "might" expect an unlock first? 3723 */ 3724 if (dorpc && (lp->nfsl_open->nfso_posixlock || 3725 (off == 0 && len == NFS64BITSSET))) { 3726 /* 3727 * Since the lock records will go away, we must 3728 * wait for grace and delay here. 3729 */ 3730 do { 3731 error = nfsrpc_locku(nd, nmp, lp, off, len, 3732 NFSV4LOCKT_READ, cred, p, 0); 3733 if ((nd->nd_repstat == NFSERR_GRACE || 3734 nd->nd_repstat == NFSERR_DELAY) && 3735 error == 0) 3736 (void) nfs_catnap(PZERO, (int)nd->nd_repstat, 3737 "nfs_advlock"); 3738 } while ((nd->nd_repstat == NFSERR_GRACE || 3739 nd->nd_repstat == NFSERR_DELAY) && error == 0); 3740 } 3741 callcnt++; 3742 } while (error == 0 && nd->nd_repstat == 0); 3743 nfscl_releasealllocks(clp, vp, p, id, flags); 3744 } else if (op == F_SETLK) { 3745 error = nfscl_getbytelock(vp, off, len, fl->l_type, cred, p, 3746 NULL, 0, id, flags, NULL, NULL, &lp, &newone, &donelocally); 3747 if (error || donelocally) { 3748 return (error); 3749 } 3750 if (nmp->nm_clp != NULL) 3751 clidrev = nmp->nm_clp->nfsc_clientidrev; 3752 else 3753 clidrev = 0; 3754 nfhp = VTONFS(vp)->n_fhp; 3755 if (!lp->nfsl_open->nfso_posixlock && 3756 (off != 0 || len != NFS64BITSSET)) { 3757 error = EINVAL; 3758 } else { 3759 error = nfsrpc_lock(nd, nmp, vp, nfhp->nfh_fh, 3760 nfhp->nfh_len, lp, newone, reclaim, off, 3761 len, fl->l_type, cred, p, 0); 3762 } 3763 if (!error) 3764 error = nd->nd_repstat; 3765 nfscl_lockrelease(lp, error, newone); 3766 } else { 3767 error = EINVAL; 3768 } 3769 if (!error) 3770 error = nd->nd_repstat; 3771 if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 3772 error == NFSERR_STALEDONTRECOVER || 3773 error == NFSERR_STALECLIENTID || error == NFSERR_DELAY || 3774 error == NFSERR_BADSESSION) { 3775 (void) nfs_catnap(PZERO, error, "nfs_advlock"); 3776 } else if ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) 3777 && clidrev != 0) { 3778 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p); 3779 retrycnt++; 3780 } 3781 } while (error == NFSERR_GRACE || 3782 error == NFSERR_STALECLIENTID || error == NFSERR_DELAY || 3783 error == NFSERR_STALEDONTRECOVER || error == NFSERR_STALESTATEID || 3784 error == NFSERR_BADSESSION || 3785 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) && 3786 expireret == 0 && clidrev != 0 && retrycnt < 4)); 3787 if (error && retrycnt >= 4) 3788 error = EIO; 3789 return (error); 3790} 3791 3792/* 3793 * The lower level routine for the LockT case. 3794 */ 3795APPLESTATIC int 3796nfsrpc_lockt(struct nfsrv_descript *nd, vnode_t vp, 3797 struct nfsclclient *clp, u_int64_t off, u_int64_t len, struct flock *fl, 3798 struct ucred *cred, NFSPROC_T *p, void *id, int flags) 3799{ 3800 u_int32_t *tl; 3801 int error, type, size; 3802 uint8_t own[NFSV4CL_LOCKNAMELEN + NFSX_V4FHMAX]; 3803 struct nfsnode *np; 3804 struct nfsmount *nmp; 3805 3806 nmp = VFSTONFS(vp->v_mount); 3807 NFSCL_REQSTART(nd, NFSPROC_LOCKT, vp); 3808 NFSM_BUILD(tl, u_int32_t *, 7 * NFSX_UNSIGNED); 3809 if (fl->l_type == F_RDLCK) 3810 *tl++ = txdr_unsigned(NFSV4LOCKT_READ); 3811 else 3812 *tl++ = txdr_unsigned(NFSV4LOCKT_WRITE); 3813 txdr_hyper(off, tl); 3814 tl += 2; 3815 txdr_hyper(len, tl); 3816 tl += 2; 3817 *tl++ = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[0]; 3818 *tl = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[1]; 3819 nfscl_filllockowner(id, own, flags); 3820 np = VTONFS(vp); 3821 NFSBCOPY(np->n_fhp->nfh_fh, &own[NFSV4CL_LOCKNAMELEN], 3822 np->n_fhp->nfh_len); 3823 (void)nfsm_strtom(nd, own, NFSV4CL_LOCKNAMELEN + np->n_fhp->nfh_len); 3824 error = nfscl_request(nd, vp, p, cred, NULL); 3825 if (error) 3826 return (error); 3827 if (nd->nd_repstat == 0) { 3828 fl->l_type = F_UNLCK; 3829 } else if (nd->nd_repstat == NFSERR_DENIED) { 3830 nd->nd_repstat = 0; 3831 fl->l_whence = SEEK_SET; 3832 NFSM_DISSECT(tl, u_int32_t *, 8 * NFSX_UNSIGNED); 3833 fl->l_start = fxdr_hyper(tl); 3834 tl += 2; 3835 len = fxdr_hyper(tl); 3836 tl += 2; 3837 if (len == NFS64BITSSET) 3838 fl->l_len = 0; 3839 else 3840 fl->l_len = len; 3841 type = fxdr_unsigned(int, *tl++); 3842 if (type == NFSV4LOCKT_WRITE) 3843 fl->l_type = F_WRLCK; 3844 else 3845 fl->l_type = F_RDLCK; 3846 /* 3847 * XXX For now, I have no idea what to do with the 3848 * conflicting lock_owner, so I'll just set the pid == 0 3849 * and skip over the lock_owner. 3850 */ 3851 fl->l_pid = (pid_t)0; 3852 tl += 2; 3853 size = fxdr_unsigned(int, *tl); 3854 if (size < 0 || size > NFSV4_OPAQUELIMIT) 3855 error = EBADRPC; 3856 if (!error) 3857 error = nfsm_advance(nd, NFSM_RNDUP(size), -1); 3858 } else if (nd->nd_repstat == NFSERR_STALECLIENTID || 3859 nd->nd_repstat == NFSERR_BADSESSION) 3860 nfscl_initiate_recovery(clp); 3861nfsmout: 3862 mbuf_freem(nd->nd_mrep); 3863 return (error); 3864} 3865 3866/* 3867 * Lower level function that performs the LockU RPC. 3868 */ 3869static int 3870nfsrpc_locku(struct nfsrv_descript *nd, struct nfsmount *nmp, 3871 struct nfscllockowner *lp, u_int64_t off, u_int64_t len, 3872 u_int32_t type, struct ucred *cred, NFSPROC_T *p, int syscred) 3873{ 3874 u_int32_t *tl; 3875 int error; 3876 3877 nfscl_reqstart(nd, NFSPROC_LOCKU, nmp, lp->nfsl_open->nfso_fh, 3878 lp->nfsl_open->nfso_fhlen, NULL, NULL); 3879 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID + 6 * NFSX_UNSIGNED); 3880 *tl++ = txdr_unsigned(type); 3881 *tl = txdr_unsigned(lp->nfsl_seqid); 3882 if (nfstest_outofseq && 3883 (arc4random() % nfstest_outofseq) == 0) 3884 *tl = txdr_unsigned(lp->nfsl_seqid + 1); 3885 tl++; 3886 if (NFSHASNFSV4N(nmp)) 3887 *tl++ = 0; 3888 else 3889 *tl++ = lp->nfsl_stateid.seqid; 3890 *tl++ = lp->nfsl_stateid.other[0]; 3891 *tl++ = lp->nfsl_stateid.other[1]; 3892 *tl++ = lp->nfsl_stateid.other[2]; 3893 txdr_hyper(off, tl); 3894 tl += 2; 3895 txdr_hyper(len, tl); 3896 if (syscred) 3897 nd->nd_flag |= ND_USEGSSNAME; 3898 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 3899 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 3900 NFSCL_INCRSEQID(lp->nfsl_seqid, nd); 3901 if (error) 3902 return (error); 3903 if (nd->nd_repstat == 0) { 3904 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID); 3905 lp->nfsl_stateid.seqid = *tl++; 3906 lp->nfsl_stateid.other[0] = *tl++; 3907 lp->nfsl_stateid.other[1] = *tl++; 3908 lp->nfsl_stateid.other[2] = *tl; 3909 } else if (nd->nd_repstat == NFSERR_STALESTATEID || 3910 nd->nd_repstat == NFSERR_BADSESSION) 3911 nfscl_initiate_recovery(lp->nfsl_open->nfso_own->nfsow_clp); 3912nfsmout: 3913 mbuf_freem(nd->nd_mrep); 3914 return (error); 3915} 3916 3917/* 3918 * The actual Lock RPC. 3919 */ 3920APPLESTATIC int 3921nfsrpc_lock(struct nfsrv_descript *nd, struct nfsmount *nmp, vnode_t vp, 3922 u_int8_t *nfhp, int fhlen, struct nfscllockowner *lp, int newone, 3923 int reclaim, u_int64_t off, u_int64_t len, short type, struct ucred *cred, 3924 NFSPROC_T *p, int syscred) 3925{ 3926 u_int32_t *tl; 3927 int error, size; 3928 uint8_t own[NFSV4CL_LOCKNAMELEN + NFSX_V4FHMAX]; 3929 3930 nfscl_reqstart(nd, NFSPROC_LOCK, nmp, nfhp, fhlen, NULL, NULL); 3931 NFSM_BUILD(tl, u_int32_t *, 7 * NFSX_UNSIGNED); 3932 if (type == F_RDLCK) 3933 *tl++ = txdr_unsigned(NFSV4LOCKT_READ); 3934 else 3935 *tl++ = txdr_unsigned(NFSV4LOCKT_WRITE); 3936 *tl++ = txdr_unsigned(reclaim); 3937 txdr_hyper(off, tl); 3938 tl += 2; 3939 txdr_hyper(len, tl); 3940 tl += 2; 3941 if (newone) { 3942 *tl = newnfs_true; 3943 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID + 3944 2 * NFSX_UNSIGNED + NFSX_HYPER); 3945 *tl++ = txdr_unsigned(lp->nfsl_open->nfso_own->nfsow_seqid); 3946 if (NFSHASNFSV4N(nmp)) 3947 *tl++ = 0; 3948 else 3949 *tl++ = lp->nfsl_open->nfso_stateid.seqid; 3950 *tl++ = lp->nfsl_open->nfso_stateid.other[0]; 3951 *tl++ = lp->nfsl_open->nfso_stateid.other[1]; 3952 *tl++ = lp->nfsl_open->nfso_stateid.other[2]; 3953 *tl++ = txdr_unsigned(lp->nfsl_seqid); 3954 *tl++ = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[0]; 3955 *tl = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[1]; 3956 NFSBCOPY(lp->nfsl_owner, own, NFSV4CL_LOCKNAMELEN); 3957 NFSBCOPY(nfhp, &own[NFSV4CL_LOCKNAMELEN], fhlen); 3958 (void)nfsm_strtom(nd, own, NFSV4CL_LOCKNAMELEN + fhlen); 3959 } else { 3960 *tl = newnfs_false; 3961 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID + NFSX_UNSIGNED); 3962 if (NFSHASNFSV4N(nmp)) 3963 *tl++ = 0; 3964 else 3965 *tl++ = lp->nfsl_stateid.seqid; 3966 *tl++ = lp->nfsl_stateid.other[0]; 3967 *tl++ = lp->nfsl_stateid.other[1]; 3968 *tl++ = lp->nfsl_stateid.other[2]; 3969 *tl = txdr_unsigned(lp->nfsl_seqid); 3970 if (nfstest_outofseq && 3971 (arc4random() % nfstest_outofseq) == 0) 3972 *tl = txdr_unsigned(lp->nfsl_seqid + 1); 3973 } 3974 if (syscred) 3975 nd->nd_flag |= ND_USEGSSNAME; 3976 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, vp, p, cred, 3977 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 3978 if (error) 3979 return (error); 3980 if (newone) 3981 NFSCL_INCRSEQID(lp->nfsl_open->nfso_own->nfsow_seqid, nd); 3982 NFSCL_INCRSEQID(lp->nfsl_seqid, nd); 3983 if (nd->nd_repstat == 0) { 3984 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID); 3985 lp->nfsl_stateid.seqid = *tl++; 3986 lp->nfsl_stateid.other[0] = *tl++; 3987 lp->nfsl_stateid.other[1] = *tl++; 3988 lp->nfsl_stateid.other[2] = *tl; 3989 } else if (nd->nd_repstat == NFSERR_DENIED) { 3990 NFSM_DISSECT(tl, u_int32_t *, 8 * NFSX_UNSIGNED); 3991 size = fxdr_unsigned(int, *(tl + 7)); 3992 if (size < 0 || size > NFSV4_OPAQUELIMIT) 3993 error = EBADRPC; 3994 if (!error) 3995 error = nfsm_advance(nd, NFSM_RNDUP(size), -1); 3996 } else if (nd->nd_repstat == NFSERR_STALESTATEID || 3997 nd->nd_repstat == NFSERR_BADSESSION) 3998 nfscl_initiate_recovery(lp->nfsl_open->nfso_own->nfsow_clp); 3999nfsmout: 4000 mbuf_freem(nd->nd_mrep); 4001 return (error); 4002} 4003 4004/* 4005 * nfs statfs rpc 4006 * (always called with the vp for the mount point) 4007 */ 4008APPLESTATIC int 4009nfsrpc_statfs(vnode_t vp, struct nfsstatfs *sbp, struct nfsfsinfo *fsp, 4010 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, 4011 void *stuff) 4012{ 4013 u_int32_t *tl = NULL; 4014 struct nfsrv_descript nfsd, *nd = &nfsd; 4015 struct nfsmount *nmp; 4016 nfsattrbit_t attrbits; 4017 int error; 4018 4019 *attrflagp = 0; 4020 nmp = VFSTONFS(vnode_mount(vp)); 4021 if (NFSHASNFSV4(nmp)) { 4022 /* 4023 * For V4, you actually do a getattr. 4024 */ 4025 NFSCL_REQSTART(nd, NFSPROC_GETATTR, vp); 4026 NFSSTATFS_GETATTRBIT(&attrbits); 4027 (void) nfsrv_putattrbit(nd, &attrbits); 4028 nd->nd_flag |= ND_USEGSSNAME; 4029 error = nfscl_request(nd, vp, p, cred, stuff); 4030 if (error) 4031 return (error); 4032 if (nd->nd_repstat == 0) { 4033 error = nfsv4_loadattr(nd, NULL, nap, NULL, NULL, 0, 4034 NULL, NULL, sbp, fsp, NULL, 0, NULL, NULL, NULL, p, 4035 cred); 4036 if (!error) { 4037 nmp->nm_fsid[0] = nap->na_filesid[0]; 4038 nmp->nm_fsid[1] = nap->na_filesid[1]; 4039 NFSSETHASSETFSID(nmp); 4040 *attrflagp = 1; 4041 } 4042 } else { 4043 error = nd->nd_repstat; 4044 } 4045 if (error) 4046 goto nfsmout; 4047 } else { 4048 NFSCL_REQSTART(nd, NFSPROC_FSSTAT, vp); 4049 error = nfscl_request(nd, vp, p, cred, stuff); 4050 if (error) 4051 return (error); 4052 if (nd->nd_flag & ND_NFSV3) { 4053 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 4054 if (error) 4055 goto nfsmout; 4056 } 4057 if (nd->nd_repstat) { 4058 error = nd->nd_repstat; 4059 goto nfsmout; 4060 } 4061 NFSM_DISSECT(tl, u_int32_t *, 4062 NFSX_STATFS(nd->nd_flag & ND_NFSV3)); 4063 } 4064 if (NFSHASNFSV3(nmp)) { 4065 sbp->sf_tbytes = fxdr_hyper(tl); tl += 2; 4066 sbp->sf_fbytes = fxdr_hyper(tl); tl += 2; 4067 sbp->sf_abytes = fxdr_hyper(tl); tl += 2; 4068 sbp->sf_tfiles = fxdr_hyper(tl); tl += 2; 4069 sbp->sf_ffiles = fxdr_hyper(tl); tl += 2; 4070 sbp->sf_afiles = fxdr_hyper(tl); tl += 2; 4071 sbp->sf_invarsec = fxdr_unsigned(u_int32_t, *tl); 4072 } else if (NFSHASNFSV4(nmp) == 0) { 4073 sbp->sf_tsize = fxdr_unsigned(u_int32_t, *tl++); 4074 sbp->sf_bsize = fxdr_unsigned(u_int32_t, *tl++); 4075 sbp->sf_blocks = fxdr_unsigned(u_int32_t, *tl++); 4076 sbp->sf_bfree = fxdr_unsigned(u_int32_t, *tl++); 4077 sbp->sf_bavail = fxdr_unsigned(u_int32_t, *tl); 4078 } 4079nfsmout: 4080 mbuf_freem(nd->nd_mrep); 4081 return (error); 4082} 4083 4084/* 4085 * nfs pathconf rpc 4086 */ 4087APPLESTATIC int 4088nfsrpc_pathconf(vnode_t vp, struct nfsv3_pathconf *pc, 4089 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, 4090 void *stuff) 4091{ 4092 struct nfsrv_descript nfsd, *nd = &nfsd; 4093 struct nfsmount *nmp; 4094 u_int32_t *tl; 4095 nfsattrbit_t attrbits; 4096 int error; 4097 4098 *attrflagp = 0; 4099 nmp = VFSTONFS(vnode_mount(vp)); 4100 if (NFSHASNFSV4(nmp)) { 4101 /* 4102 * For V4, you actually do a getattr. 4103 */ 4104 NFSCL_REQSTART(nd, NFSPROC_GETATTR, vp); 4105 NFSPATHCONF_GETATTRBIT(&attrbits); 4106 (void) nfsrv_putattrbit(nd, &attrbits); 4107 nd->nd_flag |= ND_USEGSSNAME; 4108 error = nfscl_request(nd, vp, p, cred, stuff); 4109 if (error) 4110 return (error); 4111 if (nd->nd_repstat == 0) { 4112 error = nfsv4_loadattr(nd, NULL, nap, NULL, NULL, 0, 4113 pc, NULL, NULL, NULL, NULL, 0, NULL, NULL, NULL, p, 4114 cred); 4115 if (!error) 4116 *attrflagp = 1; 4117 } else { 4118 error = nd->nd_repstat; 4119 } 4120 } else { 4121 NFSCL_REQSTART(nd, NFSPROC_PATHCONF, vp); 4122 error = nfscl_request(nd, vp, p, cred, stuff); 4123 if (error) 4124 return (error); 4125 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 4126 if (nd->nd_repstat && !error) 4127 error = nd->nd_repstat; 4128 if (!error) { 4129 NFSM_DISSECT(tl, u_int32_t *, NFSX_V3PATHCONF); 4130 pc->pc_linkmax = fxdr_unsigned(u_int32_t, *tl++); 4131 pc->pc_namemax = fxdr_unsigned(u_int32_t, *tl++); 4132 pc->pc_notrunc = fxdr_unsigned(u_int32_t, *tl++); 4133 pc->pc_chownrestricted = 4134 fxdr_unsigned(u_int32_t, *tl++); 4135 pc->pc_caseinsensitive = 4136 fxdr_unsigned(u_int32_t, *tl++); 4137 pc->pc_casepreserving = fxdr_unsigned(u_int32_t, *tl); 4138 } 4139 } 4140nfsmout: 4141 mbuf_freem(nd->nd_mrep); 4142 return (error); 4143} 4144 4145/* 4146 * nfs version 3 fsinfo rpc call 4147 */ 4148APPLESTATIC int 4149nfsrpc_fsinfo(vnode_t vp, struct nfsfsinfo *fsp, struct ucred *cred, 4150 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff) 4151{ 4152 u_int32_t *tl; 4153 struct nfsrv_descript nfsd, *nd = &nfsd; 4154 int error; 4155 4156 *attrflagp = 0; 4157 NFSCL_REQSTART(nd, NFSPROC_FSINFO, vp); 4158 error = nfscl_request(nd, vp, p, cred, stuff); 4159 if (error) 4160 return (error); 4161 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 4162 if (nd->nd_repstat && !error) 4163 error = nd->nd_repstat; 4164 if (!error) { 4165 NFSM_DISSECT(tl, u_int32_t *, NFSX_V3FSINFO); 4166 fsp->fs_rtmax = fxdr_unsigned(u_int32_t, *tl++); 4167 fsp->fs_rtpref = fxdr_unsigned(u_int32_t, *tl++); 4168 fsp->fs_rtmult = fxdr_unsigned(u_int32_t, *tl++); 4169 fsp->fs_wtmax = fxdr_unsigned(u_int32_t, *tl++); 4170 fsp->fs_wtpref = fxdr_unsigned(u_int32_t, *tl++); 4171 fsp->fs_wtmult = fxdr_unsigned(u_int32_t, *tl++); 4172 fsp->fs_dtpref = fxdr_unsigned(u_int32_t, *tl++); 4173 fsp->fs_maxfilesize = fxdr_hyper(tl); 4174 tl += 2; 4175 fxdr_nfsv3time(tl, &fsp->fs_timedelta); 4176 tl += 2; 4177 fsp->fs_properties = fxdr_unsigned(u_int32_t, *tl); 4178 } 4179nfsmout: 4180 mbuf_freem(nd->nd_mrep); 4181 return (error); 4182} 4183 4184/* 4185 * This function performs the Renew RPC. 4186 */ 4187APPLESTATIC int 4188nfsrpc_renew(struct nfsclclient *clp, struct nfsclds *dsp, struct ucred *cred, 4189 NFSPROC_T *p) 4190{ 4191 u_int32_t *tl; 4192 struct nfsrv_descript nfsd; 4193 struct nfsrv_descript *nd = &nfsd; 4194 struct nfsmount *nmp; 4195 int error; 4196 struct nfssockreq *nrp; 4197 4198 nmp = clp->nfsc_nmp; 4199 if (nmp == NULL) 4200 return (0); 4201 nfscl_reqstart(nd, NFSPROC_RENEW, nmp, NULL, 0, NULL, 4202 &dsp->nfsclds_sess); 4203 if (!NFSHASNFSV4N(nmp)) { 4204 /* NFSv4.1 just uses a Sequence Op and not a Renew. */ 4205 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 4206 *tl++ = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[0]; 4207 *tl = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[1]; 4208 } 4209 nrp = dsp->nfsclds_sockp; 4210 if (nrp == NULL) 4211 /* If NULL, use the MDS socket. */ 4212 nrp = &nmp->nm_sockreq; 4213 nd->nd_flag |= ND_USEGSSNAME; 4214 error = newnfs_request(nd, nmp, NULL, nrp, NULL, p, cred, 4215 NFS_PROG, NFS_VER4, NULL, 1, NULL, &dsp->nfsclds_sess); 4216 if (error) 4217 return (error); 4218 error = nd->nd_repstat; 4219 mbuf_freem(nd->nd_mrep); 4220 return (error); 4221} 4222 4223/* 4224 * This function performs the Releaselockowner RPC. 4225 */ 4226APPLESTATIC int 4227nfsrpc_rellockown(struct nfsmount *nmp, struct nfscllockowner *lp, 4228 uint8_t *fh, int fhlen, struct ucred *cred, NFSPROC_T *p) 4229{ 4230 struct nfsrv_descript nfsd, *nd = &nfsd; 4231 u_int32_t *tl; 4232 int error; 4233 uint8_t own[NFSV4CL_LOCKNAMELEN + NFSX_V4FHMAX]; 4234 4235 if (NFSHASNFSV4N(nmp)) { 4236 /* For NFSv4.1, do a FreeStateID. */ 4237 nfscl_reqstart(nd, NFSPROC_FREESTATEID, nmp, NULL, 0, NULL, 4238 NULL); 4239 nfsm_stateidtom(nd, &lp->nfsl_stateid, NFSSTATEID_PUTSTATEID); 4240 } else { 4241 nfscl_reqstart(nd, NFSPROC_RELEASELCKOWN, nmp, NULL, 0, NULL, 4242 NULL); 4243 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 4244 *tl++ = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[0]; 4245 *tl = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[1]; 4246 NFSBCOPY(lp->nfsl_owner, own, NFSV4CL_LOCKNAMELEN); 4247 NFSBCOPY(fh, &own[NFSV4CL_LOCKNAMELEN], fhlen); 4248 (void)nfsm_strtom(nd, own, NFSV4CL_LOCKNAMELEN + fhlen); 4249 } 4250 nd->nd_flag |= ND_USEGSSNAME; 4251 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 4252 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4253 if (error) 4254 return (error); 4255 error = nd->nd_repstat; 4256 mbuf_freem(nd->nd_mrep); 4257 return (error); 4258} 4259 4260/* 4261 * This function performs the Compound to get the mount pt FH. 4262 */ 4263APPLESTATIC int 4264nfsrpc_getdirpath(struct nfsmount *nmp, u_char *dirpath, struct ucred *cred, 4265 NFSPROC_T *p) 4266{ 4267 u_int32_t *tl; 4268 struct nfsrv_descript nfsd; 4269 struct nfsrv_descript *nd = &nfsd; 4270 u_char *cp, *cp2; 4271 int error, cnt, len, setnil; 4272 u_int32_t *opcntp; 4273 4274 nfscl_reqstart(nd, NFSPROC_PUTROOTFH, nmp, NULL, 0, &opcntp, NULL); 4275 cp = dirpath; 4276 cnt = 0; 4277 do { 4278 setnil = 0; 4279 while (*cp == '/') 4280 cp++; 4281 cp2 = cp; 4282 while (*cp2 != '\0' && *cp2 != '/') 4283 cp2++; 4284 if (*cp2 == '/') { 4285 setnil = 1; 4286 *cp2 = '\0'; 4287 } 4288 if (cp2 != cp) { 4289 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 4290 *tl = txdr_unsigned(NFSV4OP_LOOKUP); 4291 nfsm_strtom(nd, cp, strlen(cp)); 4292 cnt++; 4293 } 4294 if (setnil) 4295 *cp2++ = '/'; 4296 cp = cp2; 4297 } while (*cp != '\0'); 4298 if (NFSHASNFSV4N(nmp)) 4299 /* Has a Sequence Op done by nfscl_reqstart(). */ 4300 *opcntp = txdr_unsigned(3 + cnt); 4301 else 4302 *opcntp = txdr_unsigned(2 + cnt); 4303 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 4304 *tl = txdr_unsigned(NFSV4OP_GETFH); 4305 nd->nd_flag |= ND_USEGSSNAME; 4306 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 4307 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4308 if (error) 4309 return (error); 4310 if (nd->nd_repstat == 0) { 4311 NFSM_DISSECT(tl, u_int32_t *, (3 + 2 * cnt) * NFSX_UNSIGNED); 4312 tl += (2 + 2 * cnt); 4313 if ((len = fxdr_unsigned(int, *tl)) <= 0 || 4314 len > NFSX_FHMAX) { 4315 nd->nd_repstat = NFSERR_BADXDR; 4316 } else { 4317 nd->nd_repstat = nfsrv_mtostr(nd, nmp->nm_fh, len); 4318 if (nd->nd_repstat == 0) 4319 nmp->nm_fhsize = len; 4320 } 4321 } 4322 error = nd->nd_repstat; 4323nfsmout: 4324 mbuf_freem(nd->nd_mrep); 4325 return (error); 4326} 4327 4328/* 4329 * This function performs the Delegreturn RPC. 4330 */ 4331APPLESTATIC int 4332nfsrpc_delegreturn(struct nfscldeleg *dp, struct ucred *cred, 4333 struct nfsmount *nmp, NFSPROC_T *p, int syscred) 4334{ 4335 u_int32_t *tl; 4336 struct nfsrv_descript nfsd; 4337 struct nfsrv_descript *nd = &nfsd; 4338 int error; 4339 4340 nfscl_reqstart(nd, NFSPROC_DELEGRETURN, nmp, dp->nfsdl_fh, 4341 dp->nfsdl_fhlen, NULL, NULL); 4342 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID); 4343 if (NFSHASNFSV4N(nmp)) 4344 *tl++ = 0; 4345 else 4346 *tl++ = dp->nfsdl_stateid.seqid; 4347 *tl++ = dp->nfsdl_stateid.other[0]; 4348 *tl++ = dp->nfsdl_stateid.other[1]; 4349 *tl = dp->nfsdl_stateid.other[2]; 4350 if (syscred) 4351 nd->nd_flag |= ND_USEGSSNAME; 4352 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 4353 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4354 if (error) 4355 return (error); 4356 error = nd->nd_repstat; 4357 mbuf_freem(nd->nd_mrep); 4358 return (error); 4359} 4360 4361/* 4362 * nfs getacl call. 4363 */ 4364APPLESTATIC int 4365nfsrpc_getacl(vnode_t vp, struct ucred *cred, NFSPROC_T *p, 4366 struct acl *aclp, void *stuff) 4367{ 4368 struct nfsrv_descript nfsd, *nd = &nfsd; 4369 int error; 4370 nfsattrbit_t attrbits; 4371 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 4372 4373 if (nfsrv_useacl == 0 || !NFSHASNFSV4(nmp)) 4374 return (EOPNOTSUPP); 4375 NFSCL_REQSTART(nd, NFSPROC_GETACL, vp); 4376 NFSZERO_ATTRBIT(&attrbits); 4377 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_ACL); 4378 (void) nfsrv_putattrbit(nd, &attrbits); 4379 error = nfscl_request(nd, vp, p, cred, stuff); 4380 if (error) 4381 return (error); 4382 if (!nd->nd_repstat) 4383 error = nfsv4_loadattr(nd, vp, NULL, NULL, NULL, 0, NULL, 4384 NULL, NULL, NULL, aclp, 0, NULL, NULL, NULL, p, cred); 4385 else 4386 error = nd->nd_repstat; 4387 mbuf_freem(nd->nd_mrep); 4388 return (error); 4389} 4390 4391/* 4392 * nfs setacl call. 4393 */ 4394APPLESTATIC int 4395nfsrpc_setacl(vnode_t vp, struct ucred *cred, NFSPROC_T *p, 4396 struct acl *aclp, void *stuff) 4397{ 4398 int error; 4399 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 4400 4401 if (nfsrv_useacl == 0 || !NFSHASNFSV4(nmp)) 4402 return (EOPNOTSUPP); 4403 error = nfsrpc_setattr(vp, NULL, aclp, cred, p, NULL, NULL, stuff); 4404 return (error); 4405} 4406 4407/* 4408 * nfs setacl call. 4409 */ 4410static int 4411nfsrpc_setaclrpc(vnode_t vp, struct ucred *cred, NFSPROC_T *p, 4412 struct acl *aclp, nfsv4stateid_t *stateidp, void *stuff) 4413{ 4414 struct nfsrv_descript nfsd, *nd = &nfsd; 4415 int error; 4416 nfsattrbit_t attrbits; 4417 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 4418 4419 if (!NFSHASNFSV4(nmp)) 4420 return (EOPNOTSUPP); 4421 NFSCL_REQSTART(nd, NFSPROC_SETACL, vp); 4422 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID); 4423 NFSZERO_ATTRBIT(&attrbits); 4424 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_ACL); 4425 (void) nfsv4_fillattr(nd, vnode_mount(vp), vp, aclp, NULL, NULL, 0, 4426 &attrbits, NULL, NULL, 0, 0, 0, 0, (uint64_t)0); 4427 error = nfscl_request(nd, vp, p, cred, stuff); 4428 if (error) 4429 return (error); 4430 /* Don't care about the pre/postop attributes */ 4431 mbuf_freem(nd->nd_mrep); 4432 return (nd->nd_repstat); 4433} 4434 4435/* 4436 * Do the NFSv4.1 Exchange ID. 4437 */ 4438int 4439nfsrpc_exchangeid(struct nfsmount *nmp, struct nfsclclient *clp, 4440 struct nfssockreq *nrp, uint32_t exchflags, struct nfsclds **dspp, 4441 struct ucred *cred, NFSPROC_T *p) 4442{ 4443 uint32_t *tl, v41flags; 4444 struct nfsrv_descript nfsd; 4445 struct nfsrv_descript *nd = &nfsd; 4446 struct nfsclds *dsp; 4447 struct timespec verstime; 4448 int error, len; 4449 4450 *dspp = NULL; 4451 nfscl_reqstart(nd, NFSPROC_EXCHANGEID, nmp, NULL, 0, NULL, NULL); 4452 NFSM_BUILD(tl, uint32_t *, 2 * NFSX_UNSIGNED); 4453 *tl++ = txdr_unsigned(nfsboottime.tv_sec); /* Client owner */ 4454 *tl = txdr_unsigned(clp->nfsc_rev); 4455 (void) nfsm_strtom(nd, clp->nfsc_id, clp->nfsc_idlen); 4456 4457 NFSM_BUILD(tl, uint32_t *, 3 * NFSX_UNSIGNED); 4458 *tl++ = txdr_unsigned(exchflags); 4459 *tl++ = txdr_unsigned(NFSV4EXCH_SP4NONE); 4460 4461 /* Set the implementation id4 */ 4462 *tl = txdr_unsigned(1); 4463 (void) nfsm_strtom(nd, "freebsd.org", strlen("freebsd.org")); 4464 (void) nfsm_strtom(nd, version, strlen(version)); 4465 NFSM_BUILD(tl, uint32_t *, NFSX_V4TIME); 4466 verstime.tv_sec = 1293840000; /* Jan 1, 2011 */ 4467 verstime.tv_nsec = 0; 4468 txdr_nfsv4time(&verstime, tl); 4469 nd->nd_flag |= ND_USEGSSNAME; 4470 error = newnfs_request(nd, nmp, NULL, nrp, NULL, p, cred, 4471 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4472 NFSCL_DEBUG(1, "exchangeid err=%d reps=%d\n", error, 4473 (int)nd->nd_repstat); 4474 if (error != 0) 4475 return (error); 4476 if (nd->nd_repstat == 0) { 4477 NFSM_DISSECT(tl, uint32_t *, 6 * NFSX_UNSIGNED + NFSX_HYPER); 4478 len = fxdr_unsigned(int, *(tl + 7)); 4479 if (len < 0 || len > NFSV4_OPAQUELIMIT) { 4480 error = NFSERR_BADXDR; 4481 goto nfsmout; 4482 } 4483 dsp = malloc(sizeof(struct nfsclds) + len, M_NFSCLDS, 4484 M_WAITOK | M_ZERO); 4485 dsp->nfsclds_expire = NFSD_MONOSEC + clp->nfsc_renew; 4486 dsp->nfsclds_servownlen = len; 4487 dsp->nfsclds_sess.nfsess_clientid.lval[0] = *tl++; 4488 dsp->nfsclds_sess.nfsess_clientid.lval[1] = *tl++; 4489 dsp->nfsclds_sess.nfsess_sequenceid = 4490 fxdr_unsigned(uint32_t, *tl++); 4491 v41flags = fxdr_unsigned(uint32_t, *tl); 4492 if ((v41flags & NFSV4EXCH_USEPNFSMDS) != 0 && 4493 NFSHASPNFSOPT(nmp)) { 4494 NFSCL_DEBUG(1, "set PNFS\n"); 4495 NFSLOCKMNT(nmp); 4496 nmp->nm_state |= NFSSTA_PNFS; 4497 NFSUNLOCKMNT(nmp); 4498 dsp->nfsclds_flags |= NFSCLDS_MDS; 4499 } 4500 if ((v41flags & NFSV4EXCH_USEPNFSDS) != 0) 4501 dsp->nfsclds_flags |= NFSCLDS_DS; 4502 if (len > 0) 4503 nd->nd_repstat = nfsrv_mtostr(nd, 4504 dsp->nfsclds_serverown, len); 4505 if (nd->nd_repstat == 0) { 4506 mtx_init(&dsp->nfsclds_mtx, "nfsds", NULL, MTX_DEF); 4507 mtx_init(&dsp->nfsclds_sess.nfsess_mtx, "nfssession", 4508 NULL, MTX_DEF); 4509 nfscl_initsessionslots(&dsp->nfsclds_sess); 4510 *dspp = dsp; 4511 } else 4512 free(dsp, M_NFSCLDS); 4513 } 4514 error = nd->nd_repstat; 4515nfsmout: 4516 mbuf_freem(nd->nd_mrep); 4517 return (error); 4518} 4519 4520/* 4521 * Do the NFSv4.1 Create Session. 4522 */ 4523int 4524nfsrpc_createsession(struct nfsmount *nmp, struct nfsclsession *sep, 4525 struct nfssockreq *nrp, uint32_t sequenceid, int mds, struct ucred *cred, 4526 NFSPROC_T *p) 4527{ 4528 uint32_t crflags, *tl; 4529 struct nfsrv_descript nfsd; 4530 struct nfsrv_descript *nd = &nfsd; 4531 int error, irdcnt; 4532 4533 nfscl_reqstart(nd, NFSPROC_CREATESESSION, nmp, NULL, 0, NULL, NULL); 4534 NFSM_BUILD(tl, uint32_t *, 4 * NFSX_UNSIGNED); 4535 *tl++ = sep->nfsess_clientid.lval[0]; 4536 *tl++ = sep->nfsess_clientid.lval[1]; 4537 *tl++ = txdr_unsigned(sequenceid); 4538 crflags = (NFSMNT_RDONLY(nmp->nm_mountp) ? 0 : NFSV4CRSESS_PERSIST); 4539 if (nfscl_enablecallb != 0 && nfs_numnfscbd > 0) 4540 crflags |= NFSV4CRSESS_CONNBACKCHAN; 4541 *tl = txdr_unsigned(crflags); 4542 4543 /* Fill in fore channel attributes. */ 4544 NFSM_BUILD(tl, uint32_t *, 7 * NFSX_UNSIGNED); 4545 *tl++ = 0; /* Header pad size */ 4546 *tl++ = txdr_unsigned(100000); /* Max request size */ 4547 *tl++ = txdr_unsigned(100000); /* Max response size */ 4548 *tl++ = txdr_unsigned(4096); /* Max response size cached */ 4549 *tl++ = txdr_unsigned(20); /* Max operations */ 4550 *tl++ = txdr_unsigned(64); /* Max slots */ 4551 *tl = 0; /* No rdma ird */ 4552 4553 /* Fill in back channel attributes. */ 4554 NFSM_BUILD(tl, uint32_t *, 7 * NFSX_UNSIGNED); 4555 *tl++ = 0; /* Header pad size */ 4556 *tl++ = txdr_unsigned(10000); /* Max request size */ 4557 *tl++ = txdr_unsigned(10000); /* Max response size */ 4558 *tl++ = txdr_unsigned(4096); /* Max response size cached */ 4559 *tl++ = txdr_unsigned(4); /* Max operations */ 4560 *tl++ = txdr_unsigned(NFSV4_CBSLOTS); /* Max slots */ 4561 *tl = 0; /* No rdma ird */ 4562 4563 NFSM_BUILD(tl, uint32_t *, 8 * NFSX_UNSIGNED); 4564 *tl++ = txdr_unsigned(NFS_CALLBCKPROG); /* Call back prog # */ 4565 4566 /* Allow AUTH_SYS callbacks as uid, gid == 0. */ 4567 *tl++ = txdr_unsigned(1); /* Auth_sys only */ 4568 *tl++ = txdr_unsigned(AUTH_SYS); /* AUTH_SYS type */ 4569 *tl++ = txdr_unsigned(nfsboottime.tv_sec); /* time stamp */ 4570 *tl++ = 0; /* Null machine name */ 4571 *tl++ = 0; /* Uid == 0 */ 4572 *tl++ = 0; /* Gid == 0 */ 4573 *tl = 0; /* No additional gids */ 4574 nd->nd_flag |= ND_USEGSSNAME; 4575 error = newnfs_request(nd, nmp, NULL, nrp, NULL, p, cred, NFS_PROG, 4576 NFS_VER4, NULL, 1, NULL, NULL); 4577 if (error != 0) 4578 return (error); 4579 if (nd->nd_repstat == 0) { 4580 NFSM_DISSECT(tl, uint32_t *, NFSX_V4SESSIONID + 4581 2 * NFSX_UNSIGNED); 4582 bcopy(tl, sep->nfsess_sessionid, NFSX_V4SESSIONID); 4583 tl += NFSX_V4SESSIONID / NFSX_UNSIGNED; 4584 sep->nfsess_sequenceid = fxdr_unsigned(uint32_t, *tl++); 4585 crflags = fxdr_unsigned(uint32_t, *tl); 4586 if ((crflags & NFSV4CRSESS_PERSIST) != 0 && mds != 0) { 4587 NFSLOCKMNT(nmp); 4588 nmp->nm_state |= NFSSTA_SESSPERSIST; 4589 NFSUNLOCKMNT(nmp); 4590 } 4591 4592 /* Get the fore channel slot count. */ 4593 NFSM_DISSECT(tl, uint32_t *, 7 * NFSX_UNSIGNED); 4594 tl += 3; /* Skip the other counts. */ 4595 sep->nfsess_maxcache = fxdr_unsigned(int, *tl++); 4596 tl++; 4597 sep->nfsess_foreslots = fxdr_unsigned(uint16_t, *tl++); 4598 NFSCL_DEBUG(4, "fore slots=%d\n", (int)sep->nfsess_foreslots); 4599 irdcnt = fxdr_unsigned(int, *tl); 4600 if (irdcnt > 0) 4601 NFSM_DISSECT(tl, uint32_t *, irdcnt * NFSX_UNSIGNED); 4602 4603 /* and the back channel slot count. */ 4604 NFSM_DISSECT(tl, uint32_t *, 7 * NFSX_UNSIGNED); 4605 tl += 5; 4606 sep->nfsess_backslots = fxdr_unsigned(uint16_t, *tl); 4607 NFSCL_DEBUG(4, "back slots=%d\n", (int)sep->nfsess_backslots); 4608 } 4609 error = nd->nd_repstat; 4610nfsmout: 4611 mbuf_freem(nd->nd_mrep); 4612 return (error); 4613} 4614 4615/* 4616 * Do the NFSv4.1 Destroy Session. 4617 */ 4618int 4619nfsrpc_destroysession(struct nfsmount *nmp, struct nfsclclient *clp, 4620 struct ucred *cred, NFSPROC_T *p) 4621{ 4622 uint32_t *tl; 4623 struct nfsrv_descript nfsd; 4624 struct nfsrv_descript *nd = &nfsd; 4625 int error; 4626 4627 nfscl_reqstart(nd, NFSPROC_DESTROYSESSION, nmp, NULL, 0, NULL, NULL); 4628 NFSM_BUILD(tl, uint32_t *, NFSX_V4SESSIONID); 4629 bcopy(NFSMNT_MDSSESSION(nmp)->nfsess_sessionid, tl, NFSX_V4SESSIONID); 4630 nd->nd_flag |= ND_USEGSSNAME; 4631 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 4632 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4633 if (error != 0) 4634 return (error); 4635 error = nd->nd_repstat; 4636 mbuf_freem(nd->nd_mrep); 4637 return (error); 4638} 4639 4640/* 4641 * Do the NFSv4.1 Destroy Client. 4642 */ 4643int 4644nfsrpc_destroyclient(struct nfsmount *nmp, struct nfsclclient *clp, 4645 struct ucred *cred, NFSPROC_T *p) 4646{ 4647 uint32_t *tl; 4648 struct nfsrv_descript nfsd; 4649 struct nfsrv_descript *nd = &nfsd; 4650 int error; 4651 4652 nfscl_reqstart(nd, NFSPROC_DESTROYCLIENT, nmp, NULL, 0, NULL, NULL); 4653 NFSM_BUILD(tl, uint32_t *, 2 * NFSX_UNSIGNED); 4654 *tl++ = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[0]; 4655 *tl = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[1]; 4656 nd->nd_flag |= ND_USEGSSNAME; 4657 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 4658 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4659 if (error != 0) 4660 return (error); 4661 error = nd->nd_repstat; 4662 mbuf_freem(nd->nd_mrep); 4663 return (error); 4664} 4665 4666/* 4667 * Do the NFSv4.1 LayoutGet. 4668 */ 4669int 4670nfsrpc_layoutget(struct nfsmount *nmp, uint8_t *fhp, int fhlen, int iomode, 4671 uint64_t offset, uint64_t len, uint64_t minlen, int layoutlen, 4672 nfsv4stateid_t *stateidp, int *retonclosep, struct nfsclflayouthead *flhp, 4673 struct ucred *cred, NFSPROC_T *p, void *stuff) 4674{ 4675 uint32_t *tl; 4676 struct nfsrv_descript nfsd, *nd = &nfsd; 4677 struct nfsfh *nfhp; 4678 struct nfsclflayout *flp, *prevflp, *tflp; 4679 int cnt, error, gotiomode, fhcnt, nfhlen, i, j; 4680 uint8_t *cp; 4681 uint64_t retlen; 4682 4683 flp = NULL; 4684 gotiomode = -1; 4685 nfscl_reqstart(nd, NFSPROC_LAYOUTGET, nmp, fhp, fhlen, NULL, NULL); 4686 NFSM_BUILD(tl, uint32_t *, 4 * NFSX_UNSIGNED + 3 * NFSX_HYPER + 4687 NFSX_STATEID); 4688 *tl++ = newnfs_false; /* Don't signal availability. */ 4689 *tl++ = txdr_unsigned(NFSLAYOUT_NFSV4_1_FILES); 4690 *tl++ = txdr_unsigned(iomode); 4691 txdr_hyper(offset, tl); 4692 tl += 2; 4693 txdr_hyper(len, tl); 4694 tl += 2; 4695 txdr_hyper(minlen, tl); 4696 tl += 2; 4697 *tl++ = txdr_unsigned(stateidp->seqid); 4698 NFSCL_DEBUG(4, "layget seq=%d\n", (int)stateidp->seqid); 4699 *tl++ = stateidp->other[0]; 4700 *tl++ = stateidp->other[1]; 4701 *tl++ = stateidp->other[2]; 4702 *tl = txdr_unsigned(layoutlen); 4703 nd->nd_flag |= ND_USEGSSNAME; 4704 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 4705 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4706 if (error != 0) 4707 return (error); 4708 if (nd->nd_repstat == 0) { 4709 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED + NFSX_STATEID); 4710 if (*tl++ != 0) 4711 *retonclosep = 1; 4712 else 4713 *retonclosep = 0; 4714 stateidp->seqid = fxdr_unsigned(uint32_t, *tl++); 4715 NFSCL_DEBUG(4, "retoncls=%d stseq=%d\n", *retonclosep, 4716 (int)stateidp->seqid); 4717 stateidp->other[0] = *tl++; 4718 stateidp->other[1] = *tl++; 4719 stateidp->other[2] = *tl++; 4720 cnt = fxdr_unsigned(int, *tl); 4721 NFSCL_DEBUG(4, "layg cnt=%d\n", cnt); 4722 if (cnt <= 0 || cnt > 10000) { 4723 /* Don't accept more than 10000 layouts in reply. */ 4724 error = NFSERR_BADXDR; 4725 goto nfsmout; 4726 } 4727 for (i = 0; i < cnt; i++) { 4728 /* Dissect all the way to the file handle cnt. */ 4729 NFSM_DISSECT(tl, uint32_t *, 3 * NFSX_HYPER + 4730 6 * NFSX_UNSIGNED + NFSX_V4DEVICEID); 4731 fhcnt = fxdr_unsigned(int, *(tl + 11 + 4732 NFSX_V4DEVICEID / NFSX_UNSIGNED)); 4733 NFSCL_DEBUG(4, "fhcnt=%d\n", fhcnt); 4734 if (fhcnt < 0 || fhcnt > 100) { 4735 /* Don't accept more than 100 file handles. */ 4736 error = NFSERR_BADXDR; 4737 goto nfsmout; 4738 } 4739 if (fhcnt > 1) 4740 flp = malloc(sizeof(*flp) + (fhcnt - 1) * 4741 sizeof(struct nfsfh *), 4742 M_NFSFLAYOUT, M_WAITOK); 4743 else 4744 flp = malloc(sizeof(*flp), 4745 M_NFSFLAYOUT, M_WAITOK); 4746 flp->nfsfl_flags = 0; 4747 flp->nfsfl_fhcnt = 0; 4748 flp->nfsfl_devp = NULL; 4749 flp->nfsfl_off = fxdr_hyper(tl); tl += 2; 4750 retlen = fxdr_hyper(tl); tl += 2; 4751 if (flp->nfsfl_off + retlen < flp->nfsfl_off) 4752 flp->nfsfl_end = UINT64_MAX - flp->nfsfl_off; 4753 else 4754 flp->nfsfl_end = flp->nfsfl_off + retlen; 4755 flp->nfsfl_iomode = fxdr_unsigned(int, *tl++); 4756 if (gotiomode == -1) 4757 gotiomode = flp->nfsfl_iomode; 4758 NFSCL_DEBUG(4, "layg reqiom=%d retiom=%d\n", iomode, 4759 (int)flp->nfsfl_iomode); 4760 if (fxdr_unsigned(int, *tl++) != 4761 NFSLAYOUT_NFSV4_1_FILES) { 4762 printf("NFSv4.1: got non-files layout\n"); 4763 error = NFSERR_BADXDR; 4764 goto nfsmout; 4765 } 4766 NFSBCOPY(++tl, flp->nfsfl_dev, NFSX_V4DEVICEID); 4767 tl += (NFSX_V4DEVICEID / NFSX_UNSIGNED); 4768 flp->nfsfl_util = fxdr_unsigned(uint32_t, *tl++); 4769 NFSCL_DEBUG(4, "flutil=0x%x\n", flp->nfsfl_util); 4770 flp->nfsfl_stripe1 = fxdr_unsigned(uint32_t, *tl++); 4771 flp->nfsfl_patoff = fxdr_hyper(tl); tl += 2; 4772 if (fxdr_unsigned(int, *tl) != fhcnt) { 4773 printf("EEK! bad fhcnt\n"); 4774 error = NFSERR_BADXDR; 4775 goto nfsmout; 4776 } 4777 for (j = 0; j < fhcnt; j++) { 4778 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 4779 nfhlen = fxdr_unsigned(int, *tl); 4780 if (nfhlen <= 0 || nfhlen > NFSX_V4FHMAX) { 4781 error = NFSERR_BADXDR; 4782 goto nfsmout; 4783 } 4784 nfhp = malloc(sizeof(*nfhp) + nfhlen - 1, 4785 M_NFSFH, M_WAITOK); 4786 flp->nfsfl_fh[j] = nfhp; 4787 flp->nfsfl_fhcnt++; 4788 nfhp->nfh_len = nfhlen; 4789 NFSM_DISSECT(cp, uint8_t *, NFSM_RNDUP(nfhlen)); 4790 NFSBCOPY(cp, nfhp->nfh_fh, nfhlen); 4791 } 4792 if (flp->nfsfl_iomode == gotiomode) { 4793 /* Keep the list in increasing offset order. */ 4794 tflp = LIST_FIRST(flhp); 4795 prevflp = NULL; 4796 while (tflp != NULL && 4797 tflp->nfsfl_off < flp->nfsfl_off) { 4798 prevflp = tflp; 4799 tflp = LIST_NEXT(tflp, nfsfl_list); 4800 } 4801 if (prevflp == NULL) 4802 LIST_INSERT_HEAD(flhp, flp, nfsfl_list); 4803 else 4804 LIST_INSERT_AFTER(prevflp, flp, 4805 nfsfl_list); 4806 } else { 4807 printf("nfscl_layoutget(): got wrong iomode\n"); 4808 nfscl_freeflayout(flp); 4809 } 4810 flp = NULL; 4811 } 4812 } 4813 if (nd->nd_repstat != 0 && error == 0) 4814 error = nd->nd_repstat; 4815nfsmout: 4816 if (error != 0 && flp != NULL) 4817 nfscl_freeflayout(flp); 4818 mbuf_freem(nd->nd_mrep); 4819 return (error); 4820} 4821 4822/* 4823 * Do the NFSv4.1 Get Device Info. 4824 */ 4825int 4826nfsrpc_getdeviceinfo(struct nfsmount *nmp, uint8_t *deviceid, int layouttype, 4827 uint32_t *notifybitsp, struct nfscldevinfo **ndip, struct ucred *cred, 4828 NFSPROC_T *p) 4829{ 4830 uint32_t cnt, *tl; 4831 struct nfsrv_descript nfsd; 4832 struct nfsrv_descript *nd = &nfsd; 4833 struct sockaddr_storage ss; 4834 struct nfsclds *dsp = NULL, **dspp; 4835 struct nfscldevinfo *ndi; 4836 int addrcnt, bitcnt, error, i, isudp, j, pos, safilled, stripecnt; 4837 uint8_t stripeindex; 4838 4839 *ndip = NULL; 4840 ndi = NULL; 4841 nfscl_reqstart(nd, NFSPROC_GETDEVICEINFO, nmp, NULL, 0, NULL, NULL); 4842 NFSM_BUILD(tl, uint32_t *, NFSX_V4DEVICEID + 3 * NFSX_UNSIGNED); 4843 NFSBCOPY(deviceid, tl, NFSX_V4DEVICEID); 4844 tl += (NFSX_V4DEVICEID / NFSX_UNSIGNED); 4845 *tl++ = txdr_unsigned(layouttype); 4846 *tl++ = txdr_unsigned(100000); 4847 if (notifybitsp != NULL && *notifybitsp != 0) { 4848 *tl = txdr_unsigned(1); /* One word of bits. */ 4849 NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED); 4850 *tl = txdr_unsigned(*notifybitsp); 4851 } else 4852 *tl = txdr_unsigned(0); 4853 nd->nd_flag |= ND_USEGSSNAME; 4854 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 4855 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4856 if (error != 0) 4857 return (error); 4858 if (nd->nd_repstat == 0) { 4859 NFSM_DISSECT(tl, uint32_t *, 3 * NFSX_UNSIGNED); 4860 if (layouttype != fxdr_unsigned(int, *tl++)) 4861 printf("EEK! devinfo layout type not same!\n"); 4862 stripecnt = fxdr_unsigned(int, *++tl); 4863 NFSCL_DEBUG(4, "stripecnt=%d\n", stripecnt); 4864 if (stripecnt < 1 || stripecnt > 4096) { 4865 printf("NFS devinfo stripecnt %d: out of range\n", 4866 stripecnt); 4867 error = NFSERR_BADXDR; 4868 goto nfsmout; 4869 } 4870 NFSM_DISSECT(tl, uint32_t *, (stripecnt + 1) * NFSX_UNSIGNED); 4871 addrcnt = fxdr_unsigned(int, *(tl + stripecnt)); 4872 NFSCL_DEBUG(4, "addrcnt=%d\n", addrcnt); 4873 if (addrcnt < 1 || addrcnt > 128) { 4874 printf("NFS devinfo addrcnt %d: out of range\n", 4875 addrcnt); 4876 error = NFSERR_BADXDR; 4877 goto nfsmout; 4878 } 4879 4880 /* 4881 * Now we know how many stripe indices and addresses, so 4882 * we can allocate the structure the correct size. 4883 */ 4884 i = (stripecnt * sizeof(uint8_t)) / sizeof(struct nfsclds *) 4885 + 1; 4886 NFSCL_DEBUG(4, "stripeindices=%d\n", i); 4887 ndi = malloc(sizeof(*ndi) + (addrcnt + i) * 4888 sizeof(struct nfsclds *), M_NFSDEVINFO, M_WAITOK | M_ZERO); 4889 NFSBCOPY(deviceid, ndi->nfsdi_deviceid, NFSX_V4DEVICEID); 4890 ndi->nfsdi_refcnt = 0; 4891 ndi->nfsdi_stripecnt = stripecnt; 4892 ndi->nfsdi_addrcnt = addrcnt; 4893 /* Fill in the stripe indices. */ 4894 for (i = 0; i < stripecnt; i++) { 4895 stripeindex = fxdr_unsigned(uint8_t, *tl++); 4896 NFSCL_DEBUG(4, "stripeind=%d\n", stripeindex); 4897 if (stripeindex >= addrcnt) { 4898 printf("NFS devinfo stripeindex %d: too big\n", 4899 (int)stripeindex); 4900 error = NFSERR_BADXDR; 4901 goto nfsmout; 4902 } 4903 nfsfldi_setstripeindex(ndi, i, stripeindex); 4904 } 4905 4906 /* Now, dissect the server address(es). */ 4907 safilled = 0; 4908 for (i = 0; i < addrcnt; i++) { 4909 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 4910 cnt = fxdr_unsigned(uint32_t, *tl); 4911 if (cnt == 0) { 4912 printf("NFS devinfo 0 len addrlist\n"); 4913 error = NFSERR_BADXDR; 4914 goto nfsmout; 4915 } 4916 dspp = nfsfldi_addr(ndi, i); 4917 pos = arc4random() % cnt; /* Choose one. */ 4918 safilled = 0; 4919 for (j = 0; j < cnt; j++) { 4920 error = nfsv4_getipaddr(nd, &ss, &isudp); 4921 if (error != 0 && error != EPERM) { 4922 error = NFSERR_BADXDR; 4923 goto nfsmout; 4924 } 4925 if (error == 0 && isudp == 0) { 4926 /* 4927 * The algorithm is: 4928 * - use "pos" entry if it is of the 4929 * same af_family or none of them 4930 * is of the same af_family 4931 * else 4932 * - use the first one of the same 4933 * af_family. 4934 */ 4935 if ((safilled == 0 && ss.ss_family == 4936 nmp->nm_nam->sa_family) || 4937 (j == pos && 4938 (safilled == 0 || ss.ss_family == 4939 nmp->nm_nam->sa_family)) || 4940 (safilled == 1 && ss.ss_family == 4941 nmp->nm_nam->sa_family)) { 4942 error = nfsrpc_fillsa(nmp, &ss, 4943 &dsp, p); 4944 if (error == 0) { 4945 *dspp = dsp; 4946 if (ss.ss_family == 4947 nmp->nm_nam->sa_family) 4948 safilled = 2; 4949 else 4950 safilled = 1; 4951 } 4952 } 4953 } 4954 } 4955 if (safilled == 0) 4956 break; 4957 } 4958 4959 /* And the notify bits. */ 4960 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 4961 if (safilled != 0) { 4962 bitcnt = fxdr_unsigned(int, *tl); 4963 if (bitcnt > 0) { 4964 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 4965 if (notifybitsp != NULL) 4966 *notifybitsp = 4967 fxdr_unsigned(uint32_t, *tl); 4968 } 4969 *ndip = ndi; 4970 } else 4971 error = EPERM; 4972 } 4973 if (nd->nd_repstat != 0) 4974 error = nd->nd_repstat; 4975nfsmout: 4976 if (error != 0 && ndi != NULL) 4977 nfscl_freedevinfo(ndi); 4978 mbuf_freem(nd->nd_mrep); 4979 return (error); 4980} 4981 4982/* 4983 * Do the NFSv4.1 LayoutCommit. 4984 */ 4985int 4986nfsrpc_layoutcommit(struct nfsmount *nmp, uint8_t *fh, int fhlen, int reclaim, 4987 uint64_t off, uint64_t len, uint64_t lastbyte, nfsv4stateid_t *stateidp, 4988 int layouttype, int layoutupdatecnt, uint8_t *layp, struct ucred *cred, 4989 NFSPROC_T *p, void *stuff) 4990{ 4991 uint32_t *tl; 4992 struct nfsrv_descript nfsd, *nd = &nfsd; 4993 int error, outcnt, i; 4994 uint8_t *cp; 4995 4996 nfscl_reqstart(nd, NFSPROC_LAYOUTCOMMIT, nmp, fh, fhlen, NULL, NULL); 4997 NFSM_BUILD(tl, uint32_t *, 5 * NFSX_UNSIGNED + 3 * NFSX_HYPER + 4998 NFSX_STATEID); 4999 txdr_hyper(off, tl); 5000 tl += 2; 5001 txdr_hyper(len, tl); 5002 tl += 2; 5003 if (reclaim != 0) 5004 *tl++ = newnfs_true; 5005 else 5006 *tl++ = newnfs_false; 5007 *tl++ = txdr_unsigned(stateidp->seqid); 5008 *tl++ = stateidp->other[0]; 5009 *tl++ = stateidp->other[1]; 5010 *tl++ = stateidp->other[2]; 5011 *tl++ = newnfs_true; 5012 if (lastbyte < off) 5013 lastbyte = off; 5014 else if (lastbyte >= (off + len)) 5015 lastbyte = off + len - 1; 5016 txdr_hyper(lastbyte, tl); 5017 tl += 2; 5018 *tl++ = newnfs_false; 5019 *tl++ = txdr_unsigned(layouttype); 5020 *tl = txdr_unsigned(layoutupdatecnt); 5021 if (layoutupdatecnt > 0) { 5022 KASSERT(layouttype != NFSLAYOUT_NFSV4_1_FILES, 5023 ("Must be nil for Files Layout")); 5024 outcnt = NFSM_RNDUP(layoutupdatecnt); 5025 NFSM_BUILD(cp, uint8_t *, outcnt); 5026 NFSBCOPY(layp, cp, layoutupdatecnt); 5027 cp += layoutupdatecnt; 5028 for (i = 0; i < (outcnt - layoutupdatecnt); i++) 5029 *cp++ = 0x0; 5030 } 5031 nd->nd_flag |= ND_USEGSSNAME; 5032 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 5033 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 5034 if (error != 0) 5035 return (error); 5036 error = nd->nd_repstat; 5037 mbuf_freem(nd->nd_mrep); 5038 return (error); 5039} 5040 5041/* 5042 * Do the NFSv4.1 LayoutReturn. 5043 */ 5044int 5045nfsrpc_layoutreturn(struct nfsmount *nmp, uint8_t *fh, int fhlen, int reclaim, 5046 int layouttype, uint32_t iomode, int layoutreturn, uint64_t offset, 5047 uint64_t len, nfsv4stateid_t *stateidp, int layoutcnt, uint32_t *layp, 5048 struct ucred *cred, NFSPROC_T *p, void *stuff) 5049{ 5050 uint32_t *tl; 5051 struct nfsrv_descript nfsd, *nd = &nfsd; 5052 int error, outcnt, i; 5053 uint8_t *cp; 5054 5055 nfscl_reqstart(nd, NFSPROC_LAYOUTRETURN, nmp, fh, fhlen, NULL, NULL); 5056 NFSM_BUILD(tl, uint32_t *, 4 * NFSX_UNSIGNED); 5057 if (reclaim != 0) 5058 *tl++ = newnfs_true; 5059 else 5060 *tl++ = newnfs_false; 5061 *tl++ = txdr_unsigned(layouttype); 5062 *tl++ = txdr_unsigned(iomode); 5063 *tl = txdr_unsigned(layoutreturn); 5064 if (layoutreturn == NFSLAYOUTRETURN_FILE) { 5065 NFSM_BUILD(tl, uint32_t *, 2 * NFSX_HYPER + NFSX_STATEID + 5066 NFSX_UNSIGNED); 5067 txdr_hyper(offset, tl); 5068 tl += 2; 5069 txdr_hyper(len, tl); 5070 tl += 2; 5071 NFSCL_DEBUG(4, "layoutret stseq=%d\n", (int)stateidp->seqid); 5072 *tl++ = txdr_unsigned(stateidp->seqid); 5073 *tl++ = stateidp->other[0]; 5074 *tl++ = stateidp->other[1]; 5075 *tl++ = stateidp->other[2]; 5076 *tl = txdr_unsigned(layoutcnt); 5077 if (layoutcnt > 0) { 5078 outcnt = NFSM_RNDUP(layoutcnt); 5079 NFSM_BUILD(cp, uint8_t *, outcnt); 5080 NFSBCOPY(layp, cp, layoutcnt); 5081 cp += layoutcnt; 5082 for (i = 0; i < (outcnt - layoutcnt); i++) 5083 *cp++ = 0x0; 5084 } 5085 } 5086 nd->nd_flag |= ND_USEGSSNAME; 5087 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 5088 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 5089 if (error != 0) 5090 return (error); 5091 if (nd->nd_repstat == 0) { 5092 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 5093 if (*tl != 0) { 5094 NFSM_DISSECT(tl, uint32_t *, NFSX_STATEID); 5095 stateidp->seqid = fxdr_unsigned(uint32_t, *tl++); 5096 stateidp->other[0] = *tl++; 5097 stateidp->other[1] = *tl++; 5098 stateidp->other[2] = *tl; 5099 } 5100 } else 5101 error = nd->nd_repstat; 5102nfsmout: 5103 mbuf_freem(nd->nd_mrep); 5104 return (error); 5105} 5106 5107/* 5108 * Acquire a layout and devinfo, if possible. The caller must have acquired 5109 * a reference count on the nfsclclient structure before calling this. 5110 * Return the layout in lypp with a reference count on it, if successful. 5111 */ 5112static int 5113nfsrpc_getlayout(struct nfsmount *nmp, vnode_t vp, struct nfsfh *nfhp, 5114 int iomode, uint32_t *notifybitsp, nfsv4stateid_t *stateidp, uint64_t off, 5115 struct nfscllayout **lypp, struct ucred *cred, NFSPROC_T *p) 5116{ 5117 struct nfscllayout *lyp; 5118 struct nfsclflayout *flp, *tflp; 5119 struct nfscldevinfo *dip; 5120 struct nfsclflayouthead flh; 5121 int error = 0, islocked, layoutlen, recalled, retonclose; 5122 nfsv4stateid_t stateid; 5123 5124 *lypp = NULL; 5125 /* 5126 * If lyp is returned non-NULL, there will be a refcnt (shared lock) 5127 * on it, iff flp != NULL or a lock (exclusive lock) on it iff 5128 * flp == NULL. 5129 */ 5130 lyp = nfscl_getlayout(nmp->nm_clp, nfhp->nfh_fh, nfhp->nfh_len, 5131 off, &flp, &recalled); 5132 islocked = 0; 5133 if (lyp == NULL || flp == NULL) { 5134 if (recalled != 0) 5135 return (EIO); 5136 LIST_INIT(&flh); 5137 layoutlen = NFSMNT_MDSSESSION(nmp)->nfsess_maxcache - 5138 (NFSX_STATEID + 3 * NFSX_UNSIGNED); 5139 if (lyp == NULL) { 5140 stateid.seqid = 0; 5141 stateid.other[0] = stateidp->other[0]; 5142 stateid.other[1] = stateidp->other[1]; 5143 stateid.other[2] = stateidp->other[2]; 5144 error = nfsrpc_layoutget(nmp, nfhp->nfh_fh, 5145 nfhp->nfh_len, iomode, (uint64_t)0, INT64_MAX, 5146 (uint64_t)0, layoutlen, &stateid, &retonclose, 5147 &flh, cred, p, NULL); 5148 } else { 5149 islocked = 1; 5150 stateid.seqid = lyp->nfsly_stateid.seqid; 5151 stateid.other[0] = lyp->nfsly_stateid.other[0]; 5152 stateid.other[1] = lyp->nfsly_stateid.other[1]; 5153 stateid.other[2] = lyp->nfsly_stateid.other[2]; 5154 error = nfsrpc_layoutget(nmp, nfhp->nfh_fh, 5155 nfhp->nfh_len, iomode, off, INT64_MAX, 5156 (uint64_t)0, layoutlen, &stateid, &retonclose, 5157 &flh, cred, p, NULL); 5158 } 5159 if (error == 0) 5160 LIST_FOREACH(tflp, &flh, nfsfl_list) { 5161 error = nfscl_adddevinfo(nmp, NULL, tflp); 5162 if (error != 0) { 5163 error = nfsrpc_getdeviceinfo(nmp, 5164 tflp->nfsfl_dev, 5165 NFSLAYOUT_NFSV4_1_FILES, 5166 notifybitsp, &dip, cred, p); 5167 if (error != 0) 5168 break; 5169 error = nfscl_adddevinfo(nmp, dip, 5170 tflp); 5171 if (error != 0) 5172 printf( 5173 "getlayout: cannot add\n"); 5174 } 5175 } 5176 if (error == 0) { 5177 /* 5178 * nfscl_layout() always returns with the nfsly_lock 5179 * set to a refcnt (shared lock). 5180 */ 5181 error = nfscl_layout(nmp, vp, nfhp->nfh_fh, 5182 nfhp->nfh_len, &stateid, retonclose, &flh, &lyp, 5183 cred, p); 5184 if (error == 0) 5185 *lypp = lyp; 5186 } else if (islocked != 0) 5187 nfsv4_unlock(&lyp->nfsly_lock, 0); 5188 } else 5189 *lypp = lyp; 5190 return (error); 5191} 5192 5193/* 5194 * Do a TCP connection plus exchange id and create session. 5195 * If successful, a "struct nfsclds" is linked into the list for the 5196 * mount point and a pointer to it is returned. 5197 */ 5198static int 5199nfsrpc_fillsa(struct nfsmount *nmp, struct sockaddr_storage *ssp, 5200 struct nfsclds **dspp, NFSPROC_T *p) 5201{ 5202 struct sockaddr_in *msad, *sad, *ssd; 5203 struct sockaddr_in6 *msad6, *sad6, *ssd6; 5204 struct nfsclclient *clp; 5205 struct nfssockreq *nrp; 5206 struct nfsclds *dsp, *tdsp; 5207 int error; 5208 enum nfsclds_state retv; 5209 uint32_t sequenceid; 5210 5211 KASSERT(nmp->nm_sockreq.nr_cred != NULL, 5212 ("nfsrpc_fillsa: NULL nr_cred")); 5213 NFSLOCKCLSTATE(); 5214 clp = nmp->nm_clp; 5215 NFSUNLOCKCLSTATE(); 5216 if (clp == NULL) 5217 return (EPERM); 5218 if (ssp->ss_family == AF_INET) { 5219 ssd = (struct sockaddr_in *)ssp; 5220 NFSLOCKMNT(nmp); 5221 5222 /* 5223 * Check to see if we already have a session for this 5224 * address that is usable for a DS. 5225 * Note that the MDS's address is in a different place 5226 * than the sessions already acquired for DS's. 5227 */ 5228 msad = (struct sockaddr_in *)nmp->nm_sockreq.nr_nam; 5229 tdsp = TAILQ_FIRST(&nmp->nm_sess); 5230 while (tdsp != NULL) { 5231 if (msad != NULL && msad->sin_family == AF_INET && 5232 ssd->sin_addr.s_addr == msad->sin_addr.s_addr && 5233 ssd->sin_port == msad->sin_port && 5234 (tdsp->nfsclds_flags & NFSCLDS_DS) != 0) { 5235 *dspp = tdsp; 5236 NFSUNLOCKMNT(nmp); 5237 NFSCL_DEBUG(4, "fnd same addr\n"); 5238 return (0); 5239 } 5240 tdsp = TAILQ_NEXT(tdsp, nfsclds_list); 5241 if (tdsp != NULL && tdsp->nfsclds_sockp != NULL) 5242 msad = (struct sockaddr_in *) 5243 tdsp->nfsclds_sockp->nr_nam; 5244 else 5245 msad = NULL; 5246 } 5247 NFSUNLOCKMNT(nmp); 5248 5249 /* No IP address match, so look for new/trunked one. */ 5250 sad = malloc(sizeof(*sad), M_SONAME, M_WAITOK | M_ZERO); 5251 sad->sin_len = sizeof(*sad); 5252 sad->sin_family = AF_INET; 5253 sad->sin_port = ssd->sin_port; 5254 sad->sin_addr.s_addr = ssd->sin_addr.s_addr; 5255 nrp = malloc(sizeof(*nrp), M_NFSSOCKREQ, M_WAITOK | M_ZERO); 5256 nrp->nr_nam = (struct sockaddr *)sad; 5257 } else if (ssp->ss_family == AF_INET6) { 5258 ssd6 = (struct sockaddr_in6 *)ssp; 5259 NFSLOCKMNT(nmp); 5260 5261 /* 5262 * Check to see if we already have a session for this 5263 * address that is usable for a DS. 5264 * Note that the MDS's address is in a different place 5265 * than the sessions already acquired for DS's. 5266 */ 5267 msad6 = (struct sockaddr_in6 *)nmp->nm_sockreq.nr_nam; 5268 tdsp = TAILQ_FIRST(&nmp->nm_sess); 5269 while (tdsp != NULL) { 5270 if (msad6 != NULL && msad6->sin6_family == AF_INET6 && 5271 IN6_ARE_ADDR_EQUAL(&ssd6->sin6_addr, 5272 &msad6->sin6_addr) && 5273 ssd6->sin6_port == msad6->sin6_port && 5274 (tdsp->nfsclds_flags & NFSCLDS_DS) != 0) { 5275 *dspp = tdsp; 5276 NFSUNLOCKMNT(nmp); 5277 return (0); 5278 } 5279 tdsp = TAILQ_NEXT(tdsp, nfsclds_list); 5280 if (tdsp != NULL && tdsp->nfsclds_sockp != NULL) 5281 msad6 = (struct sockaddr_in6 *) 5282 tdsp->nfsclds_sockp->nr_nam; 5283 else 5284 msad6 = NULL; 5285 } 5286 NFSUNLOCKMNT(nmp); 5287 5288 /* No IP address match, so look for new/trunked one. */ 5289 sad6 = malloc(sizeof(*sad6), M_SONAME, M_WAITOK | M_ZERO); 5290 sad6->sin6_len = sizeof(*sad6); 5291 sad6->sin6_family = AF_INET6; 5292 sad6->sin6_port = ssd6->sin6_port; 5293 NFSBCOPY(&ssd6->sin6_addr, &sad6->sin6_addr, 5294 sizeof(struct in6_addr)); 5295 nrp = malloc(sizeof(*nrp), M_NFSSOCKREQ, M_WAITOK | M_ZERO); 5296 nrp->nr_nam = (struct sockaddr *)sad6; 5297 } else 5298 return (EPERM); 5299 5300 nrp->nr_sotype = SOCK_STREAM; 5301 mtx_init(&nrp->nr_mtx, "nfssock", NULL, MTX_DEF); 5302 nrp->nr_prog = NFS_PROG; 5303 nrp->nr_vers = NFS_VER4; 5304 5305 /* 5306 * Use the credentials that were used for the mount, which are 5307 * in nmp->nm_sockreq.nr_cred for newnfs_connect() etc. 5308 * Ref. counting the credentials with crhold() is probably not 5309 * necessary, since nm_sockreq.nr_cred won't be crfree()'d until 5310 * unmount, but I did it anyhow. 5311 */ 5312 nrp->nr_cred = crhold(nmp->nm_sockreq.nr_cred); 5313 error = newnfs_connect(nmp, nrp, NULL, p, 0); 5314 NFSCL_DEBUG(3, "DS connect=%d\n", error); 5315 5316 /* Now, do the exchangeid and create session. */ 5317 if (error == 0) 5318 error = nfsrpc_exchangeid(nmp, clp, nrp, NFSV4EXCH_USEPNFSDS, 5319 &dsp, nrp->nr_cred, p); 5320 NFSCL_DEBUG(3, "DS exchangeid=%d\n", error); 5321 if (error == 0) { 5322 dsp->nfsclds_sockp = nrp; 5323 NFSLOCKMNT(nmp); 5324 retv = nfscl_getsameserver(nmp, dsp, &tdsp); 5325 NFSCL_DEBUG(3, "getsame ret=%d\n", retv); 5326 if (retv == NFSDSP_USETHISSESSION) { 5327 NFSUNLOCKMNT(nmp); 5328 /* 5329 * If there is already a session for this server, 5330 * use it. 5331 */ 5332 (void)newnfs_disconnect(nrp); 5333 nfscl_freenfsclds(dsp); 5334 *dspp = tdsp; 5335 return (0); 5336 } 5337 if (retv == NFSDSP_SEQTHISSESSION) 5338 sequenceid = tdsp->nfsclds_sess.nfsess_sequenceid; 5339 else 5340 sequenceid = dsp->nfsclds_sess.nfsess_sequenceid; 5341 NFSUNLOCKMNT(nmp); 5342 error = nfsrpc_createsession(nmp, &dsp->nfsclds_sess, 5343 nrp, sequenceid, 0, nrp->nr_cred, p); 5344 NFSCL_DEBUG(3, "DS createsess=%d\n", error); 5345 } else { 5346 NFSFREECRED(nrp->nr_cred); 5347 NFSFREEMUTEX(&nrp->nr_mtx); 5348 free(nrp->nr_nam, M_SONAME); 5349 free(nrp, M_NFSSOCKREQ); 5350 } 5351 if (error == 0) { 5352 NFSCL_DEBUG(3, "add DS session\n"); 5353 /* 5354 * Put it at the end of the list. That way the list 5355 * is ordered by when the entry was added. This matters 5356 * since the one done first is the one that should be 5357 * used for sequencid'ing any subsequent create sessions. 5358 */ 5359 NFSLOCKMNT(nmp); 5360 TAILQ_INSERT_TAIL(&nmp->nm_sess, dsp, nfsclds_list); 5361 NFSUNLOCKMNT(nmp); 5362 *dspp = dsp; 5363 } else if (dsp != NULL) 5364 nfscl_freenfsclds(dsp); 5365 return (error); 5366} 5367 5368/* 5369 * Do the NFSv4.1 Reclaim Complete. 5370 */ 5371int 5372nfsrpc_reclaimcomplete(struct nfsmount *nmp, struct ucred *cred, NFSPROC_T *p) 5373{ 5374 uint32_t *tl; 5375 struct nfsrv_descript nfsd; 5376 struct nfsrv_descript *nd = &nfsd; 5377 int error; 5378 5379 nfscl_reqstart(nd, NFSPROC_RECLAIMCOMPL, nmp, NULL, 0, NULL, NULL); 5380 NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED); 5381 *tl = newnfs_false; 5382 nd->nd_flag |= ND_USEGSSNAME; 5383 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 5384 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 5385 if (error != 0) 5386 return (error); 5387 error = nd->nd_repstat; 5388 mbuf_freem(nd->nd_mrep); 5389 return (error); 5390} 5391 5392/* 5393 * Initialize the slot tables for a session. 5394 */ 5395static void 5396nfscl_initsessionslots(struct nfsclsession *sep) 5397{ 5398 int i; 5399 5400 for (i = 0; i < NFSV4_CBSLOTS; i++) { 5401 if (sep->nfsess_cbslots[i].nfssl_reply != NULL) 5402 m_freem(sep->nfsess_cbslots[i].nfssl_reply); 5403 NFSBZERO(&sep->nfsess_cbslots[i], sizeof(struct nfsslot)); 5404 } 5405 for (i = 0; i < 64; i++) 5406 sep->nfsess_slotseq[i] = 0; 5407 sep->nfsess_slots = 0; 5408} 5409 5410/* 5411 * Called to try and do an I/O operation via an NFSv4.1 Data Server (DS). 5412 */ 5413int 5414nfscl_doiods(vnode_t vp, struct uio *uiop, int *iomode, int *must_commit, 5415 uint32_t rwaccess, struct ucred *cred, NFSPROC_T *p) 5416{ 5417 struct nfsnode *np = VTONFS(vp); 5418 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 5419 struct nfscllayout *layp; 5420 struct nfscldevinfo *dip; 5421 struct nfsclflayout *rflp; 5422 nfsv4stateid_t stateid; 5423 struct ucred *newcred; 5424 uint64_t lastbyte, len, off, oresid, xfer; 5425 int eof, error, iolaymode, recalled; 5426 void *lckp; 5427 5428 if (!NFSHASPNFS(nmp) || nfscl_enablecallb == 0 || nfs_numnfscbd == 0 || 5429 (np->n_flag & NNOLAYOUT) != 0) 5430 return (EIO); 5431 /* Now, get a reference cnt on the clientid for this mount. */ 5432 if (nfscl_getref(nmp) == 0) 5433 return (EIO); 5434 5435 /* Find an appropriate stateid. */ 5436 newcred = NFSNEWCRED(cred); 5437 error = nfscl_getstateid(vp, np->n_fhp->nfh_fh, np->n_fhp->nfh_len, 5438 rwaccess, 1, newcred, p, &stateid, &lckp); 5439 if (error != 0) { 5440 NFSFREECRED(newcred); 5441 nfscl_relref(nmp); 5442 return (error); 5443 } 5444 /* Search for a layout for this file. */ 5445 off = uiop->uio_offset; 5446 layp = nfscl_getlayout(nmp->nm_clp, np->n_fhp->nfh_fh, 5447 np->n_fhp->nfh_len, off, &rflp, &recalled); 5448 if (layp == NULL || rflp == NULL) { 5449 if (recalled != 0) { 5450 NFSFREECRED(newcred); 5451 nfscl_relref(nmp); 5452 return (EIO); 5453 } 5454 if (layp != NULL) { 5455 nfscl_rellayout(layp, (rflp == NULL) ? 1 : 0); 5456 layp = NULL; 5457 } 5458 /* Try and get a Layout, if it is supported. */ 5459 if (rwaccess == NFSV4OPEN_ACCESSWRITE || 5460 (np->n_flag & NWRITEOPENED) != 0) 5461 iolaymode = NFSLAYOUTIOMODE_RW; 5462 else 5463 iolaymode = NFSLAYOUTIOMODE_READ; 5464 error = nfsrpc_getlayout(nmp, vp, np->n_fhp, iolaymode, 5465 NULL, &stateid, off, &layp, newcred, p); 5466 if (error != 0) { 5467 NFSLOCKNODE(np); 5468 np->n_flag |= NNOLAYOUT; 5469 NFSUNLOCKNODE(np); 5470 if (lckp != NULL) 5471 nfscl_lockderef(lckp); 5472 NFSFREECRED(newcred); 5473 if (layp != NULL) 5474 nfscl_rellayout(layp, 0); 5475 nfscl_relref(nmp); 5476 return (error); 5477 } 5478 } 5479 5480 /* 5481 * Loop around finding a layout that works for the first part of 5482 * this I/O operation, and then call the function that actually 5483 * does the RPC. 5484 */ 5485 eof = 0; 5486 len = (uint64_t)uiop->uio_resid; 5487 while (len > 0 && error == 0 && eof == 0) { 5488 off = uiop->uio_offset; 5489 error = nfscl_findlayoutforio(layp, off, rwaccess, &rflp); 5490 if (error == 0) { 5491 oresid = xfer = (uint64_t)uiop->uio_resid; 5492 if (xfer > (rflp->nfsfl_end - rflp->nfsfl_off)) 5493 xfer = rflp->nfsfl_end - rflp->nfsfl_off; 5494 dip = nfscl_getdevinfo(nmp->nm_clp, rflp->nfsfl_dev, 5495 rflp->nfsfl_devp); 5496 if (dip != NULL) { 5497 error = nfscl_doflayoutio(vp, uiop, iomode, 5498 must_commit, &eof, &stateid, rwaccess, dip, 5499 layp, rflp, off, xfer, newcred, p); 5500 nfscl_reldevinfo(dip); 5501 lastbyte = off + xfer - 1; 5502 if (error == 0) { 5503 NFSLOCKCLSTATE(); 5504 if (lastbyte > layp->nfsly_lastbyte) 5505 layp->nfsly_lastbyte = lastbyte; 5506 NFSUNLOCKCLSTATE(); 5507 } 5508 } else 5509 error = EIO; 5510 if (error == 0) 5511 len -= (oresid - (uint64_t)uiop->uio_resid); 5512 } 5513 } 5514 if (lckp != NULL) 5515 nfscl_lockderef(lckp); 5516 NFSFREECRED(newcred); 5517 nfscl_rellayout(layp, 0); 5518 nfscl_relref(nmp); 5519 return (error); 5520} 5521 5522/* 5523 * Find a file layout that will handle the first bytes of the requested 5524 * range and return the information from it needed to to the I/O operation. 5525 */ 5526int 5527nfscl_findlayoutforio(struct nfscllayout *lyp, uint64_t off, uint32_t rwaccess, 5528 struct nfsclflayout **retflpp) 5529{ 5530 struct nfsclflayout *flp, *nflp, *rflp; 5531 uint32_t rw; 5532 5533 rflp = NULL; 5534 rw = rwaccess; 5535 /* For reading, do the Read list first and then the Write list. */ 5536 do { 5537 if (rw == NFSV4OPEN_ACCESSREAD) 5538 flp = LIST_FIRST(&lyp->nfsly_flayread); 5539 else 5540 flp = LIST_FIRST(&lyp->nfsly_flayrw); 5541 while (flp != NULL) { 5542 nflp = LIST_NEXT(flp, nfsfl_list); 5543 if (flp->nfsfl_off > off) 5544 break; 5545 if (flp->nfsfl_end > off && 5546 (rflp == NULL || rflp->nfsfl_end < flp->nfsfl_end)) 5547 rflp = flp; 5548 flp = nflp; 5549 } 5550 if (rw == NFSV4OPEN_ACCESSREAD) 5551 rw = NFSV4OPEN_ACCESSWRITE; 5552 else 5553 rw = 0; 5554 } while (rw != 0); 5555 if (rflp != NULL) { 5556 /* This one covers the most bytes starting at off. */ 5557 *retflpp = rflp; 5558 return (0); 5559 } 5560 return (EIO); 5561} 5562 5563/* 5564 * Do I/O using an NFSv4.1 file layout. 5565 */ 5566static int 5567nfscl_doflayoutio(vnode_t vp, struct uio *uiop, int *iomode, int *must_commit, 5568 int *eofp, nfsv4stateid_t *stateidp, int rwflag, struct nfscldevinfo *dp, 5569 struct nfscllayout *lyp, struct nfsclflayout *flp, uint64_t off, 5570 uint64_t len, struct ucred *cred, NFSPROC_T *p) 5571{ 5572 uint64_t io_off, rel_off, stripe_unit_size, transfer, xfer; 5573 int commit_thru_mds, error = 0, stripe_index, stripe_pos; 5574 struct nfsnode *np; 5575 struct nfsfh *fhp; 5576 struct nfsclds **dspp; 5577 5578 np = VTONFS(vp); 5579 rel_off = off - flp->nfsfl_patoff; 5580 stripe_unit_size = (flp->nfsfl_util >> 6) & 0x3ffffff; 5581 stripe_pos = (rel_off / stripe_unit_size + flp->nfsfl_stripe1) % 5582 dp->nfsdi_stripecnt; 5583 transfer = stripe_unit_size - (rel_off % stripe_unit_size); 5584 5585 /* Loop around, doing I/O for each stripe unit. */ 5586 while (len > 0 && error == 0) { 5587 stripe_index = nfsfldi_stripeindex(dp, stripe_pos); 5588 dspp = nfsfldi_addr(dp, stripe_index); 5589 if (len > transfer) 5590 xfer = transfer; 5591 else 5592 xfer = len; 5593 if ((flp->nfsfl_util & NFSFLAYUTIL_DENSE) != 0) { 5594 /* Dense layout. */ 5595 if (stripe_pos >= flp->nfsfl_fhcnt) 5596 return (EIO); 5597 fhp = flp->nfsfl_fh[stripe_pos]; 5598 io_off = (rel_off / (stripe_unit_size * 5599 dp->nfsdi_stripecnt)) * stripe_unit_size + 5600 rel_off % stripe_unit_size; 5601 } else { 5602 /* Sparse layout. */ 5603 if (flp->nfsfl_fhcnt > 1) { 5604 if (stripe_index >= flp->nfsfl_fhcnt) 5605 return (EIO); 5606 fhp = flp->nfsfl_fh[stripe_index]; 5607 } else if (flp->nfsfl_fhcnt == 1) 5608 fhp = flp->nfsfl_fh[0]; 5609 else 5610 fhp = np->n_fhp; 5611 io_off = off; 5612 } 5613 if ((flp->nfsfl_util & NFSFLAYUTIL_COMMIT_THRU_MDS) != 0) 5614 commit_thru_mds = 1; 5615 else 5616 commit_thru_mds = 0; 5617 if (rwflag == FREAD) 5618 error = nfsrpc_readds(vp, uiop, stateidp, eofp, *dspp, 5619 io_off, xfer, fhp, cred, p); 5620 else { 5621 error = nfsrpc_writeds(vp, uiop, iomode, must_commit, 5622 stateidp, *dspp, io_off, xfer, fhp, commit_thru_mds, 5623 cred, p); 5624 if (error == 0) { 5625 NFSLOCKCLSTATE(); 5626 lyp->nfsly_flags |= NFSLY_WRITTEN; 5627 NFSUNLOCKCLSTATE(); 5628 } 5629 } 5630 if (error == 0) { 5631 transfer = stripe_unit_size; 5632 stripe_pos = (stripe_pos + 1) % dp->nfsdi_stripecnt; 5633 len -= xfer; 5634 off += xfer; 5635 } 5636 } 5637 return (error); 5638} 5639 5640/* 5641 * The actual read RPC done to a DS. 5642 */ 5643static int 5644nfsrpc_readds(vnode_t vp, struct uio *uiop, nfsv4stateid_t *stateidp, int *eofp, 5645 struct nfsclds *dsp, uint64_t io_off, int len, struct nfsfh *fhp, 5646 struct ucred *cred, NFSPROC_T *p) 5647{ 5648 uint32_t *tl; 5649 int error, retlen; 5650 struct nfsrv_descript nfsd; 5651 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 5652 struct nfsrv_descript *nd = &nfsd; 5653 struct nfssockreq *nrp; 5654 5655 nd->nd_mrep = NULL; 5656 nfscl_reqstart(nd, NFSPROC_READDS, nmp, fhp->nfh_fh, fhp->nfh_len, 5657 NULL, &dsp->nfsclds_sess); 5658 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSEQIDZERO); 5659 NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED * 3); 5660 txdr_hyper(io_off, tl); 5661 *(tl + 2) = txdr_unsigned(len); 5662 nrp = dsp->nfsclds_sockp; 5663 if (nrp == NULL) 5664 /* If NULL, use the MDS socket. */ 5665 nrp = &nmp->nm_sockreq; 5666 error = newnfs_request(nd, nmp, NULL, nrp, vp, p, cred, 5667 NFS_PROG, NFS_VER4, NULL, 1, NULL, &dsp->nfsclds_sess); 5668 if (error != 0) 5669 return (error); 5670 if (nd->nd_repstat != 0) { 5671 error = nd->nd_repstat; 5672 goto nfsmout; 5673 } 5674 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 5675 *eofp = fxdr_unsigned(int, *tl); 5676 NFSM_STRSIZ(retlen, len); 5677 error = nfsm_mbufuio(nd, uiop, retlen); 5678nfsmout: 5679 if (nd->nd_mrep != NULL) 5680 mbuf_freem(nd->nd_mrep); 5681 return (error); 5682} 5683 5684/* 5685 * The actual write RPC done to a DS. 5686 */ 5687static int 5688nfsrpc_writeds(vnode_t vp, struct uio *uiop, int *iomode, int *must_commit, 5689 nfsv4stateid_t *stateidp, struct nfsclds *dsp, uint64_t io_off, int len, 5690 struct nfsfh *fhp, int commit_thru_mds, struct ucred *cred, NFSPROC_T *p) 5691{ 5692 uint32_t *tl; 5693 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 5694 int error, rlen, commit, committed = NFSWRITE_FILESYNC; 5695 int32_t backup; 5696 struct nfsrv_descript nfsd; 5697 struct nfsrv_descript *nd = &nfsd; 5698 struct nfssockreq *nrp; 5699 5700 KASSERT(uiop->uio_iovcnt == 1, ("nfs: writerpc iovcnt > 1")); 5701 nd->nd_mrep = NULL; 5702 nfscl_reqstart(nd, NFSPROC_WRITEDS, nmp, fhp->nfh_fh, fhp->nfh_len, 5703 NULL, &dsp->nfsclds_sess); 5704 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSEQIDZERO); 5705 NFSM_BUILD(tl, uint32_t *, NFSX_HYPER + 2 * NFSX_UNSIGNED); 5706 txdr_hyper(io_off, tl); 5707 tl += 2; 5708 *tl++ = txdr_unsigned(*iomode); 5709 *tl = txdr_unsigned(len); 5710 nfsm_uiombuf(nd, uiop, len); 5711 nrp = dsp->nfsclds_sockp; 5712 if (nrp == NULL) 5713 /* If NULL, use the MDS socket. */ 5714 nrp = &nmp->nm_sockreq; 5715 error = newnfs_request(nd, nmp, NULL, nrp, vp, p, cred, 5716 NFS_PROG, NFS_VER4, NULL, 1, NULL, &dsp->nfsclds_sess); 5717 if (error != 0) 5718 return (error); 5719 if (nd->nd_repstat != 0) { 5720 /* 5721 * In case the rpc gets retried, roll 5722 * the uio fileds changed by nfsm_uiombuf() 5723 * back. 5724 */ 5725 uiop->uio_offset -= len; 5726 uio_uio_resid_add(uiop, len); 5727 uio_iov_base_add(uiop, -len); 5728 uio_iov_len_add(uiop, len); 5729 error = nd->nd_repstat; 5730 } else { 5731 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED + NFSX_VERF); 5732 rlen = fxdr_unsigned(int, *tl++); 5733 if (rlen == 0) { 5734 error = NFSERR_IO; 5735 goto nfsmout; 5736 } else if (rlen < len) { 5737 backup = len - rlen; 5738 uio_iov_base_add(uiop, -(backup)); 5739 uio_iov_len_add(uiop, backup); 5740 uiop->uio_offset -= backup; 5741 uio_uio_resid_add(uiop, backup); 5742 len = rlen; 5743 } 5744 commit = fxdr_unsigned(int, *tl++); 5745 5746 /* 5747 * Return the lowest committment level 5748 * obtained by any of the RPCs. 5749 */ 5750 if (committed == NFSWRITE_FILESYNC) 5751 committed = commit; 5752 else if (committed == NFSWRITE_DATASYNC && 5753 commit == NFSWRITE_UNSTABLE) 5754 committed = commit; 5755 if (commit_thru_mds != 0) { 5756 NFSLOCKMNT(nmp); 5757 if (!NFSHASWRITEVERF(nmp)) { 5758 NFSBCOPY(tl, nmp->nm_verf, NFSX_VERF); 5759 NFSSETWRITEVERF(nmp); 5760 } else if (NFSBCMP(tl, nmp->nm_verf, NFSX_VERF)) { 5761 *must_commit = 1; 5762 NFSBCOPY(tl, nmp->nm_verf, NFSX_VERF); 5763 } 5764 NFSUNLOCKMNT(nmp); 5765 } else { 5766 NFSLOCKDS(dsp); 5767 if ((dsp->nfsclds_flags & NFSCLDS_HASWRITEVERF) == 0) { 5768 NFSBCOPY(tl, dsp->nfsclds_verf, NFSX_VERF); 5769 dsp->nfsclds_flags |= NFSCLDS_HASWRITEVERF; 5770 } else if (NFSBCMP(tl, dsp->nfsclds_verf, NFSX_VERF)) { 5771 *must_commit = 1; 5772 NFSBCOPY(tl, dsp->nfsclds_verf, NFSX_VERF); 5773 } 5774 NFSUNLOCKDS(dsp); 5775 } 5776 } 5777nfsmout: 5778 if (nd->nd_mrep != NULL) 5779 mbuf_freem(nd->nd_mrep); 5780 *iomode = committed; 5781 if (nd->nd_repstat != 0 && error == 0) 5782 error = nd->nd_repstat; 5783 return (error); 5784} 5785 5786/* 5787 * Free up the nfsclds structure. 5788 */ 5789void 5790nfscl_freenfsclds(struct nfsclds *dsp) 5791{ 5792 int i; 5793 5794 if (dsp == NULL) 5795 return; 5796 if (dsp->nfsclds_sockp != NULL) { 5797 NFSFREECRED(dsp->nfsclds_sockp->nr_cred); 5798 NFSFREEMUTEX(&dsp->nfsclds_sockp->nr_mtx); 5799 free(dsp->nfsclds_sockp->nr_nam, M_SONAME); 5800 free(dsp->nfsclds_sockp, M_NFSSOCKREQ); 5801 } 5802 NFSFREEMUTEX(&dsp->nfsclds_mtx); 5803 NFSFREEMUTEX(&dsp->nfsclds_sess.nfsess_mtx); 5804 for (i = 0; i < NFSV4_CBSLOTS; i++) { 5805 if (dsp->nfsclds_sess.nfsess_cbslots[i].nfssl_reply != NULL) 5806 m_freem( 5807 dsp->nfsclds_sess.nfsess_cbslots[i].nfssl_reply); 5808 } 5809 free(dsp, M_NFSCLDS); 5810} 5811 5812static enum nfsclds_state 5813nfscl_getsameserver(struct nfsmount *nmp, struct nfsclds *newdsp, 5814 struct nfsclds **retdspp) 5815{ 5816 struct nfsclds *dsp, *cur_dsp; 5817 5818 /* 5819 * Search the list of nfsclds structures for one with the same 5820 * server. 5821 */ 5822 cur_dsp = NULL; 5823 TAILQ_FOREACH(dsp, &nmp->nm_sess, nfsclds_list) { 5824 if (dsp->nfsclds_servownlen == newdsp->nfsclds_servownlen && 5825 dsp->nfsclds_servownlen != 0 && 5826 !NFSBCMP(dsp->nfsclds_serverown, newdsp->nfsclds_serverown, 5827 dsp->nfsclds_servownlen)) { 5828 NFSCL_DEBUG(4, "fnd same fdsp=%p dsp=%p flg=0x%x\n", 5829 TAILQ_FIRST(&nmp->nm_sess), dsp, 5830 dsp->nfsclds_flags); 5831 /* Server major id matches. */ 5832 if ((dsp->nfsclds_flags & NFSCLDS_DS) != 0) { 5833 *retdspp = dsp; 5834 return (NFSDSP_USETHISSESSION); 5835 } 5836 5837 /* 5838 * Note the first match, so it can be used for 5839 * sequence'ing new sessions. 5840 */ 5841 if (cur_dsp == NULL) 5842 cur_dsp = dsp; 5843 } 5844 } 5845 if (cur_dsp != NULL) { 5846 *retdspp = cur_dsp; 5847 return (NFSDSP_SEQTHISSESSION); 5848 } 5849 return (NFSDSP_NOTFOUND); 5850} 5851 5852#ifdef notyet 5853/* 5854 * NFS commit rpc to a DS. 5855 */ 5856static int 5857nfsrpc_commitds(vnode_t vp, uint64_t offset, int cnt, struct nfsclds *dsp, 5858 struct nfsfh *fhp, struct ucred *cred, NFSPROC_T *p, void *stuff) 5859{ 5860 uint32_t *tl; 5861 struct nfsrv_descript nfsd, *nd = &nfsd; 5862 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 5863 struct nfssockreq *nrp; 5864 int error; 5865 5866 nfscl_reqstart(nd, NFSPROC_COMMITDS, nmp, fhp->nfh_fh, fhp->nfh_len, 5867 NULL, &dsp->nfsclds_sess); 5868 NFSM_BUILD(tl, uint32_t *, NFSX_HYPER + NFSX_UNSIGNED); 5869 txdr_hyper(offset, tl); 5870 tl += 2; 5871 *tl = txdr_unsigned(cnt); 5872 nrp = dsp->nfsclds_sockp; 5873 if (nrp == NULL) 5874 /* If NULL, use the MDS socket. */ 5875 nrp = &nmp->nm_sockreq; 5876 error = newnfs_request(nd, nmp, NULL, nrp, vp, p, cred, 5877 NFS_PROG, NFS_VER4, NULL, 1, NULL, &dsp->nfsclds_sess); 5878 if (error) 5879 return (error); 5880 if (nd->nd_repstat == 0) { 5881 NFSM_DISSECT(tl, u_int32_t *, NFSX_VERF); 5882 NFSLOCKDS(dsp); 5883 if (NFSBCMP(tl, dsp->nfsclds_verf, NFSX_VERF)) { 5884 NFSBCOPY(tl, dsp->nfsclds_verf, NFSX_VERF); 5885 error = NFSERR_STALEWRITEVERF; 5886 } 5887 NFSUNLOCKDS(dsp); 5888 } 5889nfsmout: 5890 if (error == 0 && nd->nd_repstat != 0) 5891 error = nd->nd_repstat; 5892 mbuf_freem(nd->nd_mrep); 5893 return (error); 5894} 5895#endif 5896 5897