nfs_clrpcops.c revision 284101
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 284101 2015-06-06 20:54:41Z 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 dp = NULL; 2159 } 2160 if (ret == NFSERR_STALECLIENTID || 2161 ret == NFSERR_STALEDONTRECOVER || 2162 ret == NFSERR_BADSESSION) 2163 error = ret; 2164 } 2165 } 2166 nfscl_openrelease(op, error, newone); 2167 *unlockedp = 1; 2168 } 2169 if (nd->nd_repstat != 0 && error == 0) 2170 error = nd->nd_repstat; 2171 if (error == NFSERR_STALECLIENTID || error == NFSERR_BADSESSION) 2172 nfscl_initiate_recovery(owp->nfsow_clp); 2173nfsmout: 2174 if (!error) 2175 *dpp = dp; 2176 else if (dp != NULL) 2177 FREE((caddr_t)dp, M_NFSCLDELEG); 2178 mbuf_freem(nd->nd_mrep); 2179 return (error); 2180} 2181 2182/* 2183 * Nfs remove rpc 2184 */ 2185APPLESTATIC int 2186nfsrpc_remove(vnode_t dvp, char *name, int namelen, vnode_t vp, 2187 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap, int *dattrflagp, 2188 void *dstuff) 2189{ 2190 u_int32_t *tl; 2191 struct nfsrv_descript nfsd, *nd = &nfsd; 2192 struct nfsnode *np; 2193 struct nfsmount *nmp; 2194 nfsv4stateid_t dstateid; 2195 int error, ret = 0, i; 2196 2197 *dattrflagp = 0; 2198 if (namelen > NFS_MAXNAMLEN) 2199 return (ENAMETOOLONG); 2200 nmp = VFSTONFS(vnode_mount(dvp)); 2201tryagain: 2202 if (NFSHASNFSV4(nmp) && ret == 0) { 2203 ret = nfscl_removedeleg(vp, p, &dstateid); 2204 if (ret == 1) { 2205 NFSCL_REQSTART(nd, NFSPROC_RETDELEGREMOVE, vp); 2206 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID + 2207 NFSX_UNSIGNED); 2208 if (NFSHASNFSV4N(nmp)) 2209 *tl++ = 0; 2210 else 2211 *tl++ = dstateid.seqid; 2212 *tl++ = dstateid.other[0]; 2213 *tl++ = dstateid.other[1]; 2214 *tl++ = dstateid.other[2]; 2215 *tl = txdr_unsigned(NFSV4OP_PUTFH); 2216 np = VTONFS(dvp); 2217 (void) nfsm_fhtom(nd, np->n_fhp->nfh_fh, 2218 np->n_fhp->nfh_len, 0); 2219 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2220 *tl = txdr_unsigned(NFSV4OP_REMOVE); 2221 } 2222 } else { 2223 ret = 0; 2224 } 2225 if (ret == 0) 2226 NFSCL_REQSTART(nd, NFSPROC_REMOVE, dvp); 2227 (void) nfsm_strtom(nd, name, namelen); 2228 error = nfscl_request(nd, dvp, p, cred, dstuff); 2229 if (error) 2230 return (error); 2231 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) { 2232 /* For NFSv4, parse out any Delereturn replies. */ 2233 if (ret > 0 && nd->nd_repstat != 0 && 2234 (nd->nd_flag & ND_NOMOREDATA)) { 2235 /* 2236 * If the Delegreturn failed, try again without 2237 * it. The server will Recall, as required. 2238 */ 2239 mbuf_freem(nd->nd_mrep); 2240 goto tryagain; 2241 } 2242 for (i = 0; i < (ret * 2); i++) { 2243 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == 2244 ND_NFSV4) { 2245 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2246 if (*(tl + 1)) 2247 nd->nd_flag |= ND_NOMOREDATA; 2248 } 2249 } 2250 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 2251 } 2252 if (nd->nd_repstat && !error) 2253 error = nd->nd_repstat; 2254nfsmout: 2255 mbuf_freem(nd->nd_mrep); 2256 return (error); 2257} 2258 2259/* 2260 * Do an nfs rename rpc. 2261 */ 2262APPLESTATIC int 2263nfsrpc_rename(vnode_t fdvp, vnode_t fvp, char *fnameptr, int fnamelen, 2264 vnode_t tdvp, vnode_t tvp, char *tnameptr, int tnamelen, struct ucred *cred, 2265 NFSPROC_T *p, struct nfsvattr *fnap, struct nfsvattr *tnap, 2266 int *fattrflagp, int *tattrflagp, void *fstuff, void *tstuff) 2267{ 2268 u_int32_t *tl; 2269 struct nfsrv_descript nfsd, *nd = &nfsd; 2270 struct nfsmount *nmp; 2271 struct nfsnode *np; 2272 nfsattrbit_t attrbits; 2273 nfsv4stateid_t fdstateid, tdstateid; 2274 int error = 0, ret = 0, gottd = 0, gotfd = 0, i; 2275 2276 *fattrflagp = 0; 2277 *tattrflagp = 0; 2278 nmp = VFSTONFS(vnode_mount(fdvp)); 2279 if (fnamelen > NFS_MAXNAMLEN || tnamelen > NFS_MAXNAMLEN) 2280 return (ENAMETOOLONG); 2281tryagain: 2282 if (NFSHASNFSV4(nmp) && ret == 0) { 2283 ret = nfscl_renamedeleg(fvp, &fdstateid, &gotfd, tvp, 2284 &tdstateid, &gottd, p); 2285 if (gotfd && gottd) { 2286 NFSCL_REQSTART(nd, NFSPROC_RETDELEGRENAME2, fvp); 2287 } else if (gotfd) { 2288 NFSCL_REQSTART(nd, NFSPROC_RETDELEGRENAME1, fvp); 2289 } else if (gottd) { 2290 NFSCL_REQSTART(nd, NFSPROC_RETDELEGRENAME1, tvp); 2291 } 2292 if (gotfd) { 2293 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID); 2294 if (NFSHASNFSV4N(nmp)) 2295 *tl++ = 0; 2296 else 2297 *tl++ = fdstateid.seqid; 2298 *tl++ = fdstateid.other[0]; 2299 *tl++ = fdstateid.other[1]; 2300 *tl = fdstateid.other[2]; 2301 if (gottd) { 2302 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2303 *tl = txdr_unsigned(NFSV4OP_PUTFH); 2304 np = VTONFS(tvp); 2305 (void) nfsm_fhtom(nd, np->n_fhp->nfh_fh, 2306 np->n_fhp->nfh_len, 0); 2307 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2308 *tl = txdr_unsigned(NFSV4OP_DELEGRETURN); 2309 } 2310 } 2311 if (gottd) { 2312 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID); 2313 if (NFSHASNFSV4N(nmp)) 2314 *tl++ = 0; 2315 else 2316 *tl++ = tdstateid.seqid; 2317 *tl++ = tdstateid.other[0]; 2318 *tl++ = tdstateid.other[1]; 2319 *tl = tdstateid.other[2]; 2320 } 2321 if (ret > 0) { 2322 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2323 *tl = txdr_unsigned(NFSV4OP_PUTFH); 2324 np = VTONFS(fdvp); 2325 (void) nfsm_fhtom(nd, np->n_fhp->nfh_fh, 2326 np->n_fhp->nfh_len, 0); 2327 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2328 *tl = txdr_unsigned(NFSV4OP_SAVEFH); 2329 } 2330 } else { 2331 ret = 0; 2332 } 2333 if (ret == 0) 2334 NFSCL_REQSTART(nd, NFSPROC_RENAME, fdvp); 2335 if (nd->nd_flag & ND_NFSV4) { 2336 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2337 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2338 NFSWCCATTR_ATTRBIT(&attrbits); 2339 (void) nfsrv_putattrbit(nd, &attrbits); 2340 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2341 *tl = txdr_unsigned(NFSV4OP_PUTFH); 2342 (void) nfsm_fhtom(nd, VTONFS(tdvp)->n_fhp->nfh_fh, 2343 VTONFS(tdvp)->n_fhp->nfh_len, 0); 2344 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2345 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2346 (void) nfsrv_putattrbit(nd, &attrbits); 2347 nd->nd_flag |= ND_V4WCCATTR; 2348 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2349 *tl = txdr_unsigned(NFSV4OP_RENAME); 2350 } 2351 (void) nfsm_strtom(nd, fnameptr, fnamelen); 2352 if (!(nd->nd_flag & ND_NFSV4)) 2353 (void) nfsm_fhtom(nd, VTONFS(tdvp)->n_fhp->nfh_fh, 2354 VTONFS(tdvp)->n_fhp->nfh_len, 0); 2355 (void) nfsm_strtom(nd, tnameptr, tnamelen); 2356 error = nfscl_request(nd, fdvp, p, cred, fstuff); 2357 if (error) 2358 return (error); 2359 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) { 2360 /* For NFSv4, parse out any Delereturn replies. */ 2361 if (ret > 0 && nd->nd_repstat != 0 && 2362 (nd->nd_flag & ND_NOMOREDATA)) { 2363 /* 2364 * If the Delegreturn failed, try again without 2365 * it. The server will Recall, as required. 2366 */ 2367 mbuf_freem(nd->nd_mrep); 2368 goto tryagain; 2369 } 2370 for (i = 0; i < (ret * 2); i++) { 2371 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == 2372 ND_NFSV4) { 2373 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2374 if (*(tl + 1)) { 2375 if (i == 0 && ret > 1) { 2376 /* 2377 * If the Delegreturn failed, try again 2378 * without it. The server will Recall, as 2379 * required. 2380 * If ret > 1, the first iteration of this 2381 * loop is the second DelegReturn result. 2382 */ 2383 mbuf_freem(nd->nd_mrep); 2384 goto tryagain; 2385 } else { 2386 nd->nd_flag |= ND_NOMOREDATA; 2387 } 2388 } 2389 } 2390 } 2391 /* Now, the first wcc attribute reply. */ 2392 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == ND_NFSV4) { 2393 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2394 if (*(tl + 1)) 2395 nd->nd_flag |= ND_NOMOREDATA; 2396 } 2397 error = nfscl_wcc_data(nd, fdvp, fnap, fattrflagp, NULL, 2398 fstuff); 2399 /* and the second wcc attribute reply. */ 2400 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == ND_NFSV4 && 2401 !error) { 2402 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2403 if (*(tl + 1)) 2404 nd->nd_flag |= ND_NOMOREDATA; 2405 } 2406 if (!error) 2407 error = nfscl_wcc_data(nd, tdvp, tnap, tattrflagp, 2408 NULL, tstuff); 2409 } 2410 if (nd->nd_repstat && !error) 2411 error = nd->nd_repstat; 2412nfsmout: 2413 mbuf_freem(nd->nd_mrep); 2414 return (error); 2415} 2416 2417/* 2418 * nfs hard link create rpc 2419 */ 2420APPLESTATIC int 2421nfsrpc_link(vnode_t dvp, vnode_t vp, char *name, int namelen, 2422 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap, 2423 struct nfsvattr *nap, int *attrflagp, int *dattrflagp, void *dstuff) 2424{ 2425 u_int32_t *tl; 2426 struct nfsrv_descript nfsd, *nd = &nfsd; 2427 nfsattrbit_t attrbits; 2428 int error = 0; 2429 2430 *attrflagp = 0; 2431 *dattrflagp = 0; 2432 if (namelen > NFS_MAXNAMLEN) 2433 return (ENAMETOOLONG); 2434 NFSCL_REQSTART(nd, NFSPROC_LINK, vp); 2435 if (nd->nd_flag & ND_NFSV4) { 2436 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2437 *tl = txdr_unsigned(NFSV4OP_PUTFH); 2438 } 2439 (void) nfsm_fhtom(nd, VTONFS(dvp)->n_fhp->nfh_fh, 2440 VTONFS(dvp)->n_fhp->nfh_len, 0); 2441 if (nd->nd_flag & ND_NFSV4) { 2442 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2443 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2444 NFSWCCATTR_ATTRBIT(&attrbits); 2445 (void) nfsrv_putattrbit(nd, &attrbits); 2446 nd->nd_flag |= ND_V4WCCATTR; 2447 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2448 *tl = txdr_unsigned(NFSV4OP_LINK); 2449 } 2450 (void) nfsm_strtom(nd, name, namelen); 2451 error = nfscl_request(nd, vp, p, cred, dstuff); 2452 if (error) 2453 return (error); 2454 if (nd->nd_flag & ND_NFSV3) { 2455 error = nfscl_postop_attr(nd, nap, attrflagp, dstuff); 2456 if (!error) 2457 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, 2458 NULL, dstuff); 2459 } else if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == ND_NFSV4) { 2460 /* 2461 * First, parse out the PutFH and Getattr result. 2462 */ 2463 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2464 if (!(*(tl + 1))) 2465 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2466 if (*(tl + 1)) 2467 nd->nd_flag |= ND_NOMOREDATA; 2468 /* 2469 * Get the pre-op attributes. 2470 */ 2471 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 2472 } 2473 if (nd->nd_repstat && !error) 2474 error = nd->nd_repstat; 2475nfsmout: 2476 mbuf_freem(nd->nd_mrep); 2477 return (error); 2478} 2479 2480/* 2481 * nfs symbolic link create rpc 2482 */ 2483APPLESTATIC int 2484nfsrpc_symlink(vnode_t dvp, char *name, int namelen, char *target, 2485 struct vattr *vap, struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap, 2486 struct nfsvattr *nnap, struct nfsfh **nfhpp, int *attrflagp, 2487 int *dattrflagp, void *dstuff) 2488{ 2489 u_int32_t *tl; 2490 struct nfsrv_descript nfsd, *nd = &nfsd; 2491 struct nfsmount *nmp; 2492 int slen, error = 0; 2493 2494 *nfhpp = NULL; 2495 *attrflagp = 0; 2496 *dattrflagp = 0; 2497 nmp = VFSTONFS(vnode_mount(dvp)); 2498 slen = strlen(target); 2499 if (slen > NFS_MAXPATHLEN || namelen > NFS_MAXNAMLEN) 2500 return (ENAMETOOLONG); 2501 NFSCL_REQSTART(nd, NFSPROC_SYMLINK, dvp); 2502 if (nd->nd_flag & ND_NFSV4) { 2503 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2504 *tl = txdr_unsigned(NFLNK); 2505 (void) nfsm_strtom(nd, target, slen); 2506 } 2507 (void) nfsm_strtom(nd, name, namelen); 2508 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) 2509 nfscl_fillsattr(nd, vap, dvp, 0, 0); 2510 if (!(nd->nd_flag & ND_NFSV4)) 2511 (void) nfsm_strtom(nd, target, slen); 2512 if (nd->nd_flag & ND_NFSV2) 2513 nfscl_fillsattr(nd, vap, dvp, NFSSATTR_SIZENEG1, 0); 2514 error = nfscl_request(nd, dvp, p, cred, dstuff); 2515 if (error) 2516 return (error); 2517 if (nd->nd_flag & ND_NFSV4) 2518 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 2519 if ((nd->nd_flag & ND_NFSV3) && !error) { 2520 if (!nd->nd_repstat) 2521 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp); 2522 if (!error) 2523 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, 2524 NULL, dstuff); 2525 } 2526 if (nd->nd_repstat && !error) 2527 error = nd->nd_repstat; 2528 mbuf_freem(nd->nd_mrep); 2529 /* 2530 * Kludge: Map EEXIST => 0 assuming that it is a reply to a retry. 2531 */ 2532 if (error == EEXIST) 2533 error = 0; 2534 return (error); 2535} 2536 2537/* 2538 * nfs make dir rpc 2539 */ 2540APPLESTATIC int 2541nfsrpc_mkdir(vnode_t dvp, char *name, int namelen, struct vattr *vap, 2542 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap, 2543 struct nfsvattr *nnap, struct nfsfh **nfhpp, int *attrflagp, 2544 int *dattrflagp, void *dstuff) 2545{ 2546 u_int32_t *tl; 2547 struct nfsrv_descript nfsd, *nd = &nfsd; 2548 nfsattrbit_t attrbits; 2549 int error = 0; 2550 struct nfsfh *fhp; 2551 2552 *nfhpp = NULL; 2553 *attrflagp = 0; 2554 *dattrflagp = 0; 2555 fhp = VTONFS(dvp)->n_fhp; 2556 if (namelen > NFS_MAXNAMLEN) 2557 return (ENAMETOOLONG); 2558 NFSCL_REQSTART(nd, NFSPROC_MKDIR, dvp); 2559 if (nd->nd_flag & ND_NFSV4) { 2560 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2561 *tl = txdr_unsigned(NFDIR); 2562 } 2563 (void) nfsm_strtom(nd, name, namelen); 2564 nfscl_fillsattr(nd, vap, dvp, NFSSATTR_SIZENEG1, 0); 2565 if (nd->nd_flag & ND_NFSV4) { 2566 NFSGETATTR_ATTRBIT(&attrbits); 2567 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2568 *tl++ = txdr_unsigned(NFSV4OP_GETFH); 2569 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2570 (void) nfsrv_putattrbit(nd, &attrbits); 2571 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2572 *tl = txdr_unsigned(NFSV4OP_PUTFH); 2573 (void) nfsm_fhtom(nd, fhp->nfh_fh, fhp->nfh_len, 0); 2574 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2575 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2576 (void) nfsrv_putattrbit(nd, &attrbits); 2577 } 2578 error = nfscl_request(nd, dvp, p, cred, dstuff); 2579 if (error) 2580 return (error); 2581 if (nd->nd_flag & ND_NFSV4) 2582 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 2583 if (!nd->nd_repstat && !error) { 2584 if (nd->nd_flag & ND_NFSV4) { 2585 NFSM_DISSECT(tl, u_int32_t *, 5 * NFSX_UNSIGNED); 2586 error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL); 2587 } 2588 if (!error) 2589 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp); 2590 if (error == 0 && (nd->nd_flag & ND_NFSV4) != 0) { 2591 /* Get rid of the PutFH and Getattr status values. */ 2592 NFSM_DISSECT(tl, u_int32_t *, 4 * NFSX_UNSIGNED); 2593 /* Load the directory attributes. */ 2594 error = nfsm_loadattr(nd, dnap); 2595 if (error == 0) 2596 *dattrflagp = 1; 2597 } 2598 } 2599 if ((nd->nd_flag & ND_NFSV3) && !error) 2600 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 2601 if (nd->nd_repstat && !error) 2602 error = nd->nd_repstat; 2603nfsmout: 2604 mbuf_freem(nd->nd_mrep); 2605 /* 2606 * Kludge: Map EEXIST => 0 assuming that you have a reply to a retry. 2607 */ 2608 if (error == EEXIST) 2609 error = 0; 2610 return (error); 2611} 2612 2613/* 2614 * nfs remove directory call 2615 */ 2616APPLESTATIC int 2617nfsrpc_rmdir(vnode_t dvp, char *name, int namelen, struct ucred *cred, 2618 NFSPROC_T *p, struct nfsvattr *dnap, int *dattrflagp, void *dstuff) 2619{ 2620 struct nfsrv_descript nfsd, *nd = &nfsd; 2621 int error = 0; 2622 2623 *dattrflagp = 0; 2624 if (namelen > NFS_MAXNAMLEN) 2625 return (ENAMETOOLONG); 2626 NFSCL_REQSTART(nd, NFSPROC_RMDIR, dvp); 2627 (void) nfsm_strtom(nd, name, namelen); 2628 error = nfscl_request(nd, dvp, p, cred, dstuff); 2629 if (error) 2630 return (error); 2631 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) 2632 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 2633 if (nd->nd_repstat && !error) 2634 error = nd->nd_repstat; 2635 mbuf_freem(nd->nd_mrep); 2636 /* 2637 * Kludge: Map ENOENT => 0 assuming that you have a reply to a retry. 2638 */ 2639 if (error == ENOENT) 2640 error = 0; 2641 return (error); 2642} 2643 2644/* 2645 * Readdir rpc. 2646 * Always returns with either uio_resid unchanged, if you are at the 2647 * end of the directory, or uio_resid == 0, with all DIRBLKSIZ chunks 2648 * filled in. 2649 * I felt this would allow caching of directory blocks more easily 2650 * than returning a pertially filled block. 2651 * Directory offset cookies: 2652 * Oh my, what to do with them... 2653 * I can think of three ways to deal with them: 2654 * 1 - have the layer above these RPCs maintain a map between logical 2655 * directory byte offsets and the NFS directory offset cookies 2656 * 2 - pass the opaque directory offset cookies up into userland 2657 * and let the libc functions deal with them, via the system call 2658 * 3 - return them to userland in the "struct dirent", so future versions 2659 * of libc can use them and do whatever is necessary to amke things work 2660 * above these rpc calls, in the meantime 2661 * For now, I do #3 by "hiding" the directory offset cookies after the 2662 * d_name field in struct dirent. This is space inside d_reclen that 2663 * will be ignored by anything that doesn't know about them. 2664 * The directory offset cookies are filled in as the last 8 bytes of 2665 * each directory entry, after d_name. Someday, the userland libc 2666 * functions may be able to use these. In the meantime, it satisfies 2667 * OpenBSD's requirements for cookies being returned. 2668 * If expects the directory offset cookie for the read to be in uio_offset 2669 * and returns the one for the next entry after this directory block in 2670 * there, as well. 2671 */ 2672APPLESTATIC int 2673nfsrpc_readdir(vnode_t vp, struct uio *uiop, nfsuint64 *cookiep, 2674 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, 2675 int *eofp, void *stuff) 2676{ 2677 int len, left; 2678 struct dirent *dp = NULL; 2679 u_int32_t *tl; 2680 nfsquad_t cookie, ncookie; 2681 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 2682 struct nfsnode *dnp = VTONFS(vp); 2683 struct nfsvattr nfsva; 2684 struct nfsrv_descript nfsd, *nd = &nfsd; 2685 int error = 0, tlen, more_dirs = 1, blksiz = 0, bigenough = 1; 2686 int reqsize, tryformoredirs = 1, readsize, eof = 0, gotmnton = 0; 2687 long dotfileid, dotdotfileid = 0; 2688 u_int32_t fakefileno = 0xffffffff, rderr; 2689 char *cp; 2690 nfsattrbit_t attrbits, dattrbits; 2691 u_int32_t *tl2 = NULL; 2692 size_t tresid; 2693 2694 KASSERT(uiop->uio_iovcnt == 1 && 2695 (uio_uio_resid(uiop) & (DIRBLKSIZ - 1)) == 0, 2696 ("nfs readdirrpc bad uio")); 2697 2698 /* 2699 * There is no point in reading a lot more than uio_resid, however 2700 * adding one additional DIRBLKSIZ makes sense. Since uio_resid 2701 * and nm_readdirsize are both exact multiples of DIRBLKSIZ, this 2702 * will never make readsize > nm_readdirsize. 2703 */ 2704 readsize = nmp->nm_readdirsize; 2705 if (readsize > uio_uio_resid(uiop)) 2706 readsize = uio_uio_resid(uiop) + DIRBLKSIZ; 2707 2708 *attrflagp = 0; 2709 if (eofp) 2710 *eofp = 0; 2711 tresid = uio_uio_resid(uiop); 2712 cookie.lval[0] = cookiep->nfsuquad[0]; 2713 cookie.lval[1] = cookiep->nfsuquad[1]; 2714 nd->nd_mrep = NULL; 2715 2716 /* 2717 * For NFSv4, first create the "." and ".." entries. 2718 */ 2719 if (NFSHASNFSV4(nmp)) { 2720 reqsize = 6 * NFSX_UNSIGNED; 2721 NFSGETATTR_ATTRBIT(&dattrbits); 2722 NFSZERO_ATTRBIT(&attrbits); 2723 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_FILEID); 2724 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_TYPE); 2725 if (NFSISSET_ATTRBIT(&dnp->n_vattr.na_suppattr, 2726 NFSATTRBIT_MOUNTEDONFILEID)) { 2727 NFSSETBIT_ATTRBIT(&attrbits, 2728 NFSATTRBIT_MOUNTEDONFILEID); 2729 gotmnton = 1; 2730 } else { 2731 /* 2732 * Must fake it. Use the fileno, except when the 2733 * fsid is != to that of the directory. For that 2734 * case, generate a fake fileno that is not the same. 2735 */ 2736 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_FSID); 2737 gotmnton = 0; 2738 } 2739 2740 /* 2741 * Joy, oh joy. For V4 we get to hand craft '.' and '..'. 2742 */ 2743 if (uiop->uio_offset == 0) { 2744 NFSCL_REQSTART(nd, NFSPROC_LOOKUPP, vp); 2745 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2746 *tl++ = txdr_unsigned(NFSV4OP_GETFH); 2747 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2748 (void) nfsrv_putattrbit(nd, &attrbits); 2749 error = nfscl_request(nd, vp, p, cred, stuff); 2750 if (error) 2751 return (error); 2752 dotfileid = 0; /* Fake out the compiler. */ 2753 if ((nd->nd_flag & ND_NOMOREDATA) == 0) { 2754 error = nfsm_loadattr(nd, &nfsva); 2755 if (error != 0) 2756 goto nfsmout; 2757 dotfileid = nfsva.na_fileid; 2758 } 2759 if (nd->nd_repstat == 0) { 2760 NFSM_DISSECT(tl, u_int32_t *, 5 * NFSX_UNSIGNED); 2761 len = fxdr_unsigned(int, *(tl + 4)); 2762 if (len > 0 && len <= NFSX_V4FHMAX) 2763 error = nfsm_advance(nd, NFSM_RNDUP(len), -1); 2764 else 2765 error = EPERM; 2766 if (!error) { 2767 NFSM_DISSECT(tl, u_int32_t *, 2*NFSX_UNSIGNED); 2768 nfsva.na_mntonfileno = 0xffffffff; 2769 error = nfsv4_loadattr(nd, NULL, &nfsva, NULL, 2770 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0, 2771 NULL, NULL, NULL, p, cred); 2772 if (error) { 2773 dotdotfileid = dotfileid; 2774 } else if (gotmnton) { 2775 if (nfsva.na_mntonfileno != 0xffffffff) 2776 dotdotfileid = nfsva.na_mntonfileno; 2777 else 2778 dotdotfileid = nfsva.na_fileid; 2779 } else if (nfsva.na_filesid[0] == 2780 dnp->n_vattr.na_filesid[0] && 2781 nfsva.na_filesid[1] == 2782 dnp->n_vattr.na_filesid[1]) { 2783 dotdotfileid = nfsva.na_fileid; 2784 } else { 2785 do { 2786 fakefileno--; 2787 } while (fakefileno == 2788 nfsva.na_fileid); 2789 dotdotfileid = fakefileno; 2790 } 2791 } 2792 } else if (nd->nd_repstat == NFSERR_NOENT) { 2793 /* 2794 * Lookupp returns NFSERR_NOENT when we are 2795 * at the root, so just use the current dir. 2796 */ 2797 nd->nd_repstat = 0; 2798 dotdotfileid = dotfileid; 2799 } else { 2800 error = nd->nd_repstat; 2801 } 2802 mbuf_freem(nd->nd_mrep); 2803 if (error) 2804 return (error); 2805 nd->nd_mrep = NULL; 2806 dp = (struct dirent *) CAST_DOWN(caddr_t, uio_iov_base(uiop)); 2807 dp->d_type = DT_DIR; 2808 dp->d_fileno = dotfileid; 2809 dp->d_namlen = 1; 2810 dp->d_name[0] = '.'; 2811 dp->d_name[1] = '\0'; 2812 dp->d_reclen = DIRENT_SIZE(dp) + NFSX_HYPER; 2813 /* 2814 * Just make these offset cookie 0. 2815 */ 2816 tl = (u_int32_t *)&dp->d_name[4]; 2817 *tl++ = 0; 2818 *tl = 0; 2819 blksiz += dp->d_reclen; 2820 uio_uio_resid_add(uiop, -(dp->d_reclen)); 2821 uiop->uio_offset += dp->d_reclen; 2822 uio_iov_base_add(uiop, dp->d_reclen); 2823 uio_iov_len_add(uiop, -(dp->d_reclen)); 2824 dp = (struct dirent *) CAST_DOWN(caddr_t, uio_iov_base(uiop)); 2825 dp->d_type = DT_DIR; 2826 dp->d_fileno = dotdotfileid; 2827 dp->d_namlen = 2; 2828 dp->d_name[0] = '.'; 2829 dp->d_name[1] = '.'; 2830 dp->d_name[2] = '\0'; 2831 dp->d_reclen = DIRENT_SIZE(dp) + NFSX_HYPER; 2832 /* 2833 * Just make these offset cookie 0. 2834 */ 2835 tl = (u_int32_t *)&dp->d_name[4]; 2836 *tl++ = 0; 2837 *tl = 0; 2838 blksiz += dp->d_reclen; 2839 uio_uio_resid_add(uiop, -(dp->d_reclen)); 2840 uiop->uio_offset += dp->d_reclen; 2841 uio_iov_base_add(uiop, dp->d_reclen); 2842 uio_iov_len_add(uiop, -(dp->d_reclen)); 2843 } 2844 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_RDATTRERROR); 2845 } else { 2846 reqsize = 5 * NFSX_UNSIGNED; 2847 } 2848 2849 2850 /* 2851 * Loop around doing readdir rpc's of size readsize. 2852 * The stopping criteria is EOF or buffer full. 2853 */ 2854 while (more_dirs && bigenough) { 2855 *attrflagp = 0; 2856 NFSCL_REQSTART(nd, NFSPROC_READDIR, vp); 2857 if (nd->nd_flag & ND_NFSV2) { 2858 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2859 *tl++ = cookie.lval[1]; 2860 *tl = txdr_unsigned(readsize); 2861 } else { 2862 NFSM_BUILD(tl, u_int32_t *, reqsize); 2863 *tl++ = cookie.lval[0]; 2864 *tl++ = cookie.lval[1]; 2865 if (cookie.qval == 0) { 2866 *tl++ = 0; 2867 *tl++ = 0; 2868 } else { 2869 NFSLOCKNODE(dnp); 2870 *tl++ = dnp->n_cookieverf.nfsuquad[0]; 2871 *tl++ = dnp->n_cookieverf.nfsuquad[1]; 2872 NFSUNLOCKNODE(dnp); 2873 } 2874 if (nd->nd_flag & ND_NFSV4) { 2875 *tl++ = txdr_unsigned(readsize); 2876 *tl = txdr_unsigned(readsize); 2877 (void) nfsrv_putattrbit(nd, &attrbits); 2878 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2879 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2880 (void) nfsrv_putattrbit(nd, &dattrbits); 2881 } else { 2882 *tl = txdr_unsigned(readsize); 2883 } 2884 } 2885 error = nfscl_request(nd, vp, p, cred, stuff); 2886 if (error) 2887 return (error); 2888 if (!(nd->nd_flag & ND_NFSV2)) { 2889 if (nd->nd_flag & ND_NFSV3) 2890 error = nfscl_postop_attr(nd, nap, attrflagp, 2891 stuff); 2892 if (!nd->nd_repstat && !error) { 2893 NFSM_DISSECT(tl, u_int32_t *, NFSX_HYPER); 2894 NFSLOCKNODE(dnp); 2895 dnp->n_cookieverf.nfsuquad[0] = *tl++; 2896 dnp->n_cookieverf.nfsuquad[1] = *tl; 2897 NFSUNLOCKNODE(dnp); 2898 } 2899 } 2900 if (nd->nd_repstat || error) { 2901 if (!error) 2902 error = nd->nd_repstat; 2903 goto nfsmout; 2904 } 2905 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2906 more_dirs = fxdr_unsigned(int, *tl); 2907 if (!more_dirs) 2908 tryformoredirs = 0; 2909 2910 /* loop thru the dir entries, doctoring them to 4bsd form */ 2911 while (more_dirs && bigenough) { 2912 if (nd->nd_flag & ND_NFSV4) { 2913 NFSM_DISSECT(tl, u_int32_t *, 3*NFSX_UNSIGNED); 2914 ncookie.lval[0] = *tl++; 2915 ncookie.lval[1] = *tl++; 2916 len = fxdr_unsigned(int, *tl); 2917 } else if (nd->nd_flag & ND_NFSV3) { 2918 NFSM_DISSECT(tl, u_int32_t *, 3*NFSX_UNSIGNED); 2919 nfsva.na_fileid = fxdr_hyper(tl); 2920 tl += 2; 2921 len = fxdr_unsigned(int, *tl); 2922 } else { 2923 NFSM_DISSECT(tl, u_int32_t *, 2*NFSX_UNSIGNED); 2924 nfsva.na_fileid = 2925 fxdr_unsigned(long, *tl++); 2926 len = fxdr_unsigned(int, *tl); 2927 } 2928 if (len <= 0 || len > NFS_MAXNAMLEN) { 2929 error = EBADRPC; 2930 goto nfsmout; 2931 } 2932 tlen = NFSM_RNDUP(len); 2933 if (tlen == len) 2934 tlen += 4; /* To ensure null termination */ 2935 left = DIRBLKSIZ - blksiz; 2936 if ((int)(tlen + DIRHDSIZ + NFSX_HYPER) > left) { 2937 dp->d_reclen += left; 2938 uio_iov_base_add(uiop, left); 2939 uio_iov_len_add(uiop, -(left)); 2940 uio_uio_resid_add(uiop, -(left)); 2941 uiop->uio_offset += left; 2942 blksiz = 0; 2943 } 2944 if ((int)(tlen + DIRHDSIZ + NFSX_HYPER) > uio_uio_resid(uiop)) 2945 bigenough = 0; 2946 if (bigenough) { 2947 dp = (struct dirent *) CAST_DOWN(caddr_t, uio_iov_base(uiop)); 2948 dp->d_namlen = len; 2949 dp->d_reclen = tlen + DIRHDSIZ + NFSX_HYPER; 2950 dp->d_type = DT_UNKNOWN; 2951 blksiz += dp->d_reclen; 2952 if (blksiz == DIRBLKSIZ) 2953 blksiz = 0; 2954 uio_uio_resid_add(uiop, -(DIRHDSIZ)); 2955 uiop->uio_offset += DIRHDSIZ; 2956 uio_iov_base_add(uiop, DIRHDSIZ); 2957 uio_iov_len_add(uiop, -(DIRHDSIZ)); 2958 error = nfsm_mbufuio(nd, uiop, len); 2959 if (error) 2960 goto nfsmout; 2961 cp = CAST_DOWN(caddr_t, uio_iov_base(uiop)); 2962 tlen -= len; 2963 *cp = '\0'; /* null terminate */ 2964 cp += tlen; /* points to cookie storage */ 2965 tl2 = (u_int32_t *)cp; 2966 uio_iov_base_add(uiop, (tlen + NFSX_HYPER)); 2967 uio_iov_len_add(uiop, -(tlen + NFSX_HYPER)); 2968 uio_uio_resid_add(uiop, -(tlen + NFSX_HYPER)); 2969 uiop->uio_offset += (tlen + NFSX_HYPER); 2970 } else { 2971 error = nfsm_advance(nd, NFSM_RNDUP(len), -1); 2972 if (error) 2973 goto nfsmout; 2974 } 2975 if (nd->nd_flag & ND_NFSV4) { 2976 rderr = 0; 2977 nfsva.na_mntonfileno = 0xffffffff; 2978 error = nfsv4_loadattr(nd, NULL, &nfsva, NULL, 2979 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0, 2980 NULL, NULL, &rderr, p, cred); 2981 if (error) 2982 goto nfsmout; 2983 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2984 } else if (nd->nd_flag & ND_NFSV3) { 2985 NFSM_DISSECT(tl, u_int32_t *, 3*NFSX_UNSIGNED); 2986 ncookie.lval[0] = *tl++; 2987 ncookie.lval[1] = *tl++; 2988 } else { 2989 NFSM_DISSECT(tl, u_int32_t *, 2*NFSX_UNSIGNED); 2990 ncookie.lval[0] = 0; 2991 ncookie.lval[1] = *tl++; 2992 } 2993 if (bigenough) { 2994 if (nd->nd_flag & ND_NFSV4) { 2995 if (rderr) { 2996 dp->d_fileno = 0; 2997 } else { 2998 if (gotmnton) { 2999 if (nfsva.na_mntonfileno != 0xffffffff) 3000 dp->d_fileno = nfsva.na_mntonfileno; 3001 else 3002 dp->d_fileno = nfsva.na_fileid; 3003 } else if (nfsva.na_filesid[0] == 3004 dnp->n_vattr.na_filesid[0] && 3005 nfsva.na_filesid[1] == 3006 dnp->n_vattr.na_filesid[1]) { 3007 dp->d_fileno = nfsva.na_fileid; 3008 } else { 3009 do { 3010 fakefileno--; 3011 } while (fakefileno == 3012 nfsva.na_fileid); 3013 dp->d_fileno = fakefileno; 3014 } 3015 dp->d_type = vtonfs_dtype(nfsva.na_type); 3016 } 3017 } else { 3018 dp->d_fileno = nfsva.na_fileid; 3019 } 3020 *tl2++ = cookiep->nfsuquad[0] = cookie.lval[0] = 3021 ncookie.lval[0]; 3022 *tl2 = cookiep->nfsuquad[1] = cookie.lval[1] = 3023 ncookie.lval[1]; 3024 } 3025 more_dirs = fxdr_unsigned(int, *tl); 3026 } 3027 /* 3028 * If at end of rpc data, get the eof boolean 3029 */ 3030 if (!more_dirs) { 3031 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 3032 eof = fxdr_unsigned(int, *tl); 3033 if (tryformoredirs) 3034 more_dirs = !eof; 3035 if (nd->nd_flag & ND_NFSV4) { 3036 error = nfscl_postop_attr(nd, nap, attrflagp, 3037 stuff); 3038 if (error) 3039 goto nfsmout; 3040 } 3041 } 3042 mbuf_freem(nd->nd_mrep); 3043 nd->nd_mrep = NULL; 3044 } 3045 /* 3046 * Fill last record, iff any, out to a multiple of DIRBLKSIZ 3047 * by increasing d_reclen for the last record. 3048 */ 3049 if (blksiz > 0) { 3050 left = DIRBLKSIZ - blksiz; 3051 dp->d_reclen += left; 3052 uio_iov_base_add(uiop, left); 3053 uio_iov_len_add(uiop, -(left)); 3054 uio_uio_resid_add(uiop, -(left)); 3055 uiop->uio_offset += left; 3056 } 3057 3058 /* 3059 * If returning no data, assume end of file. 3060 * If not bigenough, return not end of file, since you aren't 3061 * returning all the data 3062 * Otherwise, return the eof flag from the server. 3063 */ 3064 if (eofp) { 3065 if (tresid == ((size_t)(uio_uio_resid(uiop)))) 3066 *eofp = 1; 3067 else if (!bigenough) 3068 *eofp = 0; 3069 else 3070 *eofp = eof; 3071 } 3072 3073nfsmout: 3074 if (nd->nd_mrep != NULL) 3075 mbuf_freem(nd->nd_mrep); 3076 return (error); 3077} 3078 3079#ifndef APPLE 3080/* 3081 * NFS V3 readdir plus RPC. Used in place of nfsrpc_readdir(). 3082 * (Also used for NFS V4 when mount flag set.) 3083 * (ditto above w.r.t. multiple of DIRBLKSIZ, etc.) 3084 */ 3085APPLESTATIC int 3086nfsrpc_readdirplus(vnode_t vp, struct uio *uiop, nfsuint64 *cookiep, 3087 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, 3088 int *eofp, void *stuff) 3089{ 3090 int len, left; 3091 struct dirent *dp = NULL; 3092 u_int32_t *tl; 3093 vnode_t newvp = NULLVP; 3094 struct nfsrv_descript nfsd, *nd = &nfsd; 3095 struct nameidata nami, *ndp = &nami; 3096 struct componentname *cnp = &ndp->ni_cnd; 3097 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 3098 struct nfsnode *dnp = VTONFS(vp), *np; 3099 struct nfsvattr nfsva; 3100 struct nfsfh *nfhp; 3101 nfsquad_t cookie, ncookie; 3102 int error = 0, tlen, more_dirs = 1, blksiz = 0, bigenough = 1; 3103 int attrflag, tryformoredirs = 1, eof = 0, gotmnton = 0; 3104 int isdotdot = 0, unlocknewvp = 0; 3105 long dotfileid, dotdotfileid = 0, fileno = 0; 3106 char *cp; 3107 nfsattrbit_t attrbits, dattrbits; 3108 size_t tresid; 3109 u_int32_t *tl2 = NULL, fakefileno = 0xffffffff, rderr; 3110 struct timespec dctime; 3111 3112 KASSERT(uiop->uio_iovcnt == 1 && 3113 (uio_uio_resid(uiop) & (DIRBLKSIZ - 1)) == 0, 3114 ("nfs readdirplusrpc bad uio")); 3115 timespecclear(&dctime); 3116 *attrflagp = 0; 3117 if (eofp != NULL) 3118 *eofp = 0; 3119 ndp->ni_dvp = vp; 3120 nd->nd_mrep = NULL; 3121 cookie.lval[0] = cookiep->nfsuquad[0]; 3122 cookie.lval[1] = cookiep->nfsuquad[1]; 3123 tresid = uio_uio_resid(uiop); 3124 3125 /* 3126 * For NFSv4, first create the "." and ".." entries. 3127 */ 3128 if (NFSHASNFSV4(nmp)) { 3129 NFSGETATTR_ATTRBIT(&dattrbits); 3130 NFSZERO_ATTRBIT(&attrbits); 3131 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_FILEID); 3132 if (NFSISSET_ATTRBIT(&dnp->n_vattr.na_suppattr, 3133 NFSATTRBIT_MOUNTEDONFILEID)) { 3134 NFSSETBIT_ATTRBIT(&attrbits, 3135 NFSATTRBIT_MOUNTEDONFILEID); 3136 gotmnton = 1; 3137 } else { 3138 /* 3139 * Must fake it. Use the fileno, except when the 3140 * fsid is != to that of the directory. For that 3141 * case, generate a fake fileno that is not the same. 3142 */ 3143 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_FSID); 3144 gotmnton = 0; 3145 } 3146 3147 /* 3148 * Joy, oh joy. For V4 we get to hand craft '.' and '..'. 3149 */ 3150 if (uiop->uio_offset == 0) { 3151 NFSCL_REQSTART(nd, NFSPROC_LOOKUPP, vp); 3152 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 3153 *tl++ = txdr_unsigned(NFSV4OP_GETFH); 3154 *tl = txdr_unsigned(NFSV4OP_GETATTR); 3155 (void) nfsrv_putattrbit(nd, &attrbits); 3156 error = nfscl_request(nd, vp, p, cred, stuff); 3157 if (error) 3158 return (error); 3159 dotfileid = 0; /* Fake out the compiler. */ 3160 if ((nd->nd_flag & ND_NOMOREDATA) == 0) { 3161 error = nfsm_loadattr(nd, &nfsva); 3162 if (error != 0) 3163 goto nfsmout; 3164 dctime = nfsva.na_ctime; 3165 dotfileid = nfsva.na_fileid; 3166 } 3167 if (nd->nd_repstat == 0) { 3168 NFSM_DISSECT(tl, u_int32_t *, 5 * NFSX_UNSIGNED); 3169 len = fxdr_unsigned(int, *(tl + 4)); 3170 if (len > 0 && len <= NFSX_V4FHMAX) 3171 error = nfsm_advance(nd, NFSM_RNDUP(len), -1); 3172 else 3173 error = EPERM; 3174 if (!error) { 3175 NFSM_DISSECT(tl, u_int32_t *, 2*NFSX_UNSIGNED); 3176 nfsva.na_mntonfileno = 0xffffffff; 3177 error = nfsv4_loadattr(nd, NULL, &nfsva, NULL, 3178 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0, 3179 NULL, NULL, NULL, p, cred); 3180 if (error) { 3181 dotdotfileid = dotfileid; 3182 } else if (gotmnton) { 3183 if (nfsva.na_mntonfileno != 0xffffffff) 3184 dotdotfileid = nfsva.na_mntonfileno; 3185 else 3186 dotdotfileid = nfsva.na_fileid; 3187 } else if (nfsva.na_filesid[0] == 3188 dnp->n_vattr.na_filesid[0] && 3189 nfsva.na_filesid[1] == 3190 dnp->n_vattr.na_filesid[1]) { 3191 dotdotfileid = nfsva.na_fileid; 3192 } else { 3193 do { 3194 fakefileno--; 3195 } while (fakefileno == 3196 nfsva.na_fileid); 3197 dotdotfileid = fakefileno; 3198 } 3199 } 3200 } else if (nd->nd_repstat == NFSERR_NOENT) { 3201 /* 3202 * Lookupp returns NFSERR_NOENT when we are 3203 * at the root, so just use the current dir. 3204 */ 3205 nd->nd_repstat = 0; 3206 dotdotfileid = dotfileid; 3207 } else { 3208 error = nd->nd_repstat; 3209 } 3210 mbuf_freem(nd->nd_mrep); 3211 if (error) 3212 return (error); 3213 nd->nd_mrep = NULL; 3214 dp = (struct dirent *)uio_iov_base(uiop); 3215 dp->d_type = DT_DIR; 3216 dp->d_fileno = dotfileid; 3217 dp->d_namlen = 1; 3218 dp->d_name[0] = '.'; 3219 dp->d_name[1] = '\0'; 3220 dp->d_reclen = DIRENT_SIZE(dp) + NFSX_HYPER; 3221 /* 3222 * Just make these offset cookie 0. 3223 */ 3224 tl = (u_int32_t *)&dp->d_name[4]; 3225 *tl++ = 0; 3226 *tl = 0; 3227 blksiz += dp->d_reclen; 3228 uio_uio_resid_add(uiop, -(dp->d_reclen)); 3229 uiop->uio_offset += dp->d_reclen; 3230 uio_iov_base_add(uiop, dp->d_reclen); 3231 uio_iov_len_add(uiop, -(dp->d_reclen)); 3232 dp = (struct dirent *)uio_iov_base(uiop); 3233 dp->d_type = DT_DIR; 3234 dp->d_fileno = dotdotfileid; 3235 dp->d_namlen = 2; 3236 dp->d_name[0] = '.'; 3237 dp->d_name[1] = '.'; 3238 dp->d_name[2] = '\0'; 3239 dp->d_reclen = DIRENT_SIZE(dp) + NFSX_HYPER; 3240 /* 3241 * Just make these offset cookie 0. 3242 */ 3243 tl = (u_int32_t *)&dp->d_name[4]; 3244 *tl++ = 0; 3245 *tl = 0; 3246 blksiz += dp->d_reclen; 3247 uio_uio_resid_add(uiop, -(dp->d_reclen)); 3248 uiop->uio_offset += dp->d_reclen; 3249 uio_iov_base_add(uiop, dp->d_reclen); 3250 uio_iov_len_add(uiop, -(dp->d_reclen)); 3251 } 3252 NFSREADDIRPLUS_ATTRBIT(&attrbits); 3253 if (gotmnton) 3254 NFSSETBIT_ATTRBIT(&attrbits, 3255 NFSATTRBIT_MOUNTEDONFILEID); 3256 } 3257 3258 /* 3259 * Loop around doing readdir rpc's of size nm_readdirsize. 3260 * The stopping criteria is EOF or buffer full. 3261 */ 3262 while (more_dirs && bigenough) { 3263 *attrflagp = 0; 3264 NFSCL_REQSTART(nd, NFSPROC_READDIRPLUS, vp); 3265 NFSM_BUILD(tl, u_int32_t *, 6 * NFSX_UNSIGNED); 3266 *tl++ = cookie.lval[0]; 3267 *tl++ = cookie.lval[1]; 3268 if (cookie.qval == 0) { 3269 *tl++ = 0; 3270 *tl++ = 0; 3271 } else { 3272 NFSLOCKNODE(dnp); 3273 *tl++ = dnp->n_cookieverf.nfsuquad[0]; 3274 *tl++ = dnp->n_cookieverf.nfsuquad[1]; 3275 NFSUNLOCKNODE(dnp); 3276 } 3277 *tl++ = txdr_unsigned(nmp->nm_readdirsize); 3278 *tl = txdr_unsigned(nmp->nm_readdirsize); 3279 if (nd->nd_flag & ND_NFSV4) { 3280 (void) nfsrv_putattrbit(nd, &attrbits); 3281 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 3282 *tl = txdr_unsigned(NFSV4OP_GETATTR); 3283 (void) nfsrv_putattrbit(nd, &dattrbits); 3284 } 3285 error = nfscl_request(nd, vp, p, cred, stuff); 3286 if (error) 3287 return (error); 3288 if (nd->nd_flag & ND_NFSV3) 3289 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 3290 if (nd->nd_repstat || error) { 3291 if (!error) 3292 error = nd->nd_repstat; 3293 goto nfsmout; 3294 } 3295 if ((nd->nd_flag & ND_NFSV3) != 0 && *attrflagp != 0) 3296 dctime = nap->na_ctime; 3297 NFSM_DISSECT(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 3298 NFSLOCKNODE(dnp); 3299 dnp->n_cookieverf.nfsuquad[0] = *tl++; 3300 dnp->n_cookieverf.nfsuquad[1] = *tl++; 3301 NFSUNLOCKNODE(dnp); 3302 more_dirs = fxdr_unsigned(int, *tl); 3303 if (!more_dirs) 3304 tryformoredirs = 0; 3305 3306 /* loop thru the dir entries, doctoring them to 4bsd form */ 3307 while (more_dirs && bigenough) { 3308 NFSM_DISSECT(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 3309 if (nd->nd_flag & ND_NFSV4) { 3310 ncookie.lval[0] = *tl++; 3311 ncookie.lval[1] = *tl++; 3312 } else { 3313 fileno = fxdr_unsigned(long, *++tl); 3314 tl++; 3315 } 3316 len = fxdr_unsigned(int, *tl); 3317 if (len <= 0 || len > NFS_MAXNAMLEN) { 3318 error = EBADRPC; 3319 goto nfsmout; 3320 } 3321 tlen = NFSM_RNDUP(len); 3322 if (tlen == len) 3323 tlen += 4; /* To ensure null termination */ 3324 left = DIRBLKSIZ - blksiz; 3325 if ((tlen + DIRHDSIZ + NFSX_HYPER) > left) { 3326 dp->d_reclen += left; 3327 uio_iov_base_add(uiop, left); 3328 uio_iov_len_add(uiop, -(left)); 3329 uio_uio_resid_add(uiop, -(left)); 3330 uiop->uio_offset += left; 3331 blksiz = 0; 3332 } 3333 if ((tlen + DIRHDSIZ + NFSX_HYPER) > uio_uio_resid(uiop)) 3334 bigenough = 0; 3335 if (bigenough) { 3336 dp = (struct dirent *)uio_iov_base(uiop); 3337 dp->d_namlen = len; 3338 dp->d_reclen = tlen + DIRHDSIZ + NFSX_HYPER; 3339 dp->d_type = DT_UNKNOWN; 3340 blksiz += dp->d_reclen; 3341 if (blksiz == DIRBLKSIZ) 3342 blksiz = 0; 3343 uio_uio_resid_add(uiop, -(DIRHDSIZ)); 3344 uiop->uio_offset += DIRHDSIZ; 3345 uio_iov_base_add(uiop, DIRHDSIZ); 3346 uio_iov_len_add(uiop, -(DIRHDSIZ)); 3347 cnp->cn_nameptr = uio_iov_base(uiop); 3348 cnp->cn_namelen = len; 3349 NFSCNHASHZERO(cnp); 3350 error = nfsm_mbufuio(nd, uiop, len); 3351 if (error) 3352 goto nfsmout; 3353 cp = uio_iov_base(uiop); 3354 tlen -= len; 3355 *cp = '\0'; 3356 cp += tlen; /* points to cookie storage */ 3357 tl2 = (u_int32_t *)cp; 3358 if (len == 2 && cnp->cn_nameptr[0] == '.' && 3359 cnp->cn_nameptr[1] == '.') 3360 isdotdot = 1; 3361 else 3362 isdotdot = 0; 3363 uio_iov_base_add(uiop, (tlen + NFSX_HYPER)); 3364 uio_iov_len_add(uiop, -(tlen + NFSX_HYPER)); 3365 uio_uio_resid_add(uiop, -(tlen + NFSX_HYPER)); 3366 uiop->uio_offset += (tlen + NFSX_HYPER); 3367 } else { 3368 error = nfsm_advance(nd, NFSM_RNDUP(len), -1); 3369 if (error) 3370 goto nfsmout; 3371 } 3372 nfhp = NULL; 3373 if (nd->nd_flag & ND_NFSV3) { 3374 NFSM_DISSECT(tl, u_int32_t *, 3*NFSX_UNSIGNED); 3375 ncookie.lval[0] = *tl++; 3376 ncookie.lval[1] = *tl++; 3377 attrflag = fxdr_unsigned(int, *tl); 3378 if (attrflag) { 3379 error = nfsm_loadattr(nd, &nfsva); 3380 if (error) 3381 goto nfsmout; 3382 } 3383 NFSM_DISSECT(tl,u_int32_t *,NFSX_UNSIGNED); 3384 if (*tl) { 3385 error = nfsm_getfh(nd, &nfhp); 3386 if (error) 3387 goto nfsmout; 3388 } 3389 if (!attrflag && nfhp != NULL) { 3390 FREE((caddr_t)nfhp, M_NFSFH); 3391 nfhp = NULL; 3392 } 3393 } else { 3394 rderr = 0; 3395 nfsva.na_mntonfileno = 0xffffffff; 3396 error = nfsv4_loadattr(nd, NULL, &nfsva, &nfhp, 3397 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0, 3398 NULL, NULL, &rderr, p, cred); 3399 if (error) 3400 goto nfsmout; 3401 } 3402 3403 if (bigenough) { 3404 if (nd->nd_flag & ND_NFSV4) { 3405 if (rderr) { 3406 dp->d_fileno = 0; 3407 } else if (gotmnton) { 3408 if (nfsva.na_mntonfileno != 0xffffffff) 3409 dp->d_fileno = nfsva.na_mntonfileno; 3410 else 3411 dp->d_fileno = nfsva.na_fileid; 3412 } else if (nfsva.na_filesid[0] == 3413 dnp->n_vattr.na_filesid[0] && 3414 nfsva.na_filesid[1] == 3415 dnp->n_vattr.na_filesid[1]) { 3416 dp->d_fileno = nfsva.na_fileid; 3417 } else { 3418 do { 3419 fakefileno--; 3420 } while (fakefileno == 3421 nfsva.na_fileid); 3422 dp->d_fileno = fakefileno; 3423 } 3424 } else { 3425 dp->d_fileno = fileno; 3426 } 3427 *tl2++ = cookiep->nfsuquad[0] = cookie.lval[0] = 3428 ncookie.lval[0]; 3429 *tl2 = cookiep->nfsuquad[1] = cookie.lval[1] = 3430 ncookie.lval[1]; 3431 3432 if (nfhp != NULL) { 3433 if (NFSRV_CMPFH(nfhp->nfh_fh, nfhp->nfh_len, 3434 dnp->n_fhp->nfh_fh, dnp->n_fhp->nfh_len)) { 3435 VREF(vp); 3436 newvp = vp; 3437 unlocknewvp = 0; 3438 FREE((caddr_t)nfhp, M_NFSFH); 3439 np = dnp; 3440 } else if (isdotdot != 0) { 3441 /* 3442 * Skip doing a nfscl_nget() call for "..". 3443 * There's a race between acquiring the nfs 3444 * node here and lookups that look for the 3445 * directory being read (in the parent). 3446 * It would try to get a lock on ".." here, 3447 * owning the lock on the directory being 3448 * read. Lookup will hold the lock on ".." 3449 * and try to acquire the lock on the 3450 * directory being read. 3451 * If the directory is unlocked/relocked, 3452 * then there is a LOR with the buflock 3453 * vp is relocked. 3454 */ 3455 free(nfhp, M_NFSFH); 3456 } else { 3457 error = nfscl_nget(vnode_mount(vp), vp, 3458 nfhp, cnp, p, &np, NULL, LK_EXCLUSIVE); 3459 if (!error) { 3460 newvp = NFSTOV(np); 3461 unlocknewvp = 1; 3462 } 3463 } 3464 nfhp = NULL; 3465 if (newvp != NULLVP) { 3466 error = nfscl_loadattrcache(&newvp, 3467 &nfsva, NULL, NULL, 0, 0); 3468 if (error) { 3469 if (unlocknewvp) 3470 vput(newvp); 3471 else 3472 vrele(newvp); 3473 goto nfsmout; 3474 } 3475 dp->d_type = 3476 vtonfs_dtype(np->n_vattr.na_type); 3477 ndp->ni_vp = newvp; 3478 NFSCNHASH(cnp, HASHINIT); 3479 if (cnp->cn_namelen <= NCHNAMLEN && 3480 (newvp->v_type != VDIR || 3481 dctime.tv_sec != 0)) { 3482 cache_enter_time(ndp->ni_dvp, 3483 ndp->ni_vp, cnp, 3484 &nfsva.na_ctime, 3485 newvp->v_type != VDIR ? NULL : 3486 &dctime); 3487 } 3488 if (unlocknewvp) 3489 vput(newvp); 3490 else 3491 vrele(newvp); 3492 newvp = NULLVP; 3493 } 3494 } 3495 } else if (nfhp != NULL) { 3496 FREE((caddr_t)nfhp, M_NFSFH); 3497 } 3498 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 3499 more_dirs = fxdr_unsigned(int, *tl); 3500 } 3501 /* 3502 * If at end of rpc data, get the eof boolean 3503 */ 3504 if (!more_dirs) { 3505 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 3506 eof = fxdr_unsigned(int, *tl); 3507 if (tryformoredirs) 3508 more_dirs = !eof; 3509 if (nd->nd_flag & ND_NFSV4) { 3510 error = nfscl_postop_attr(nd, nap, attrflagp, 3511 stuff); 3512 if (error) 3513 goto nfsmout; 3514 } 3515 } 3516 mbuf_freem(nd->nd_mrep); 3517 nd->nd_mrep = NULL; 3518 } 3519 /* 3520 * Fill last record, iff any, out to a multiple of DIRBLKSIZ 3521 * by increasing d_reclen for the last record. 3522 */ 3523 if (blksiz > 0) { 3524 left = DIRBLKSIZ - blksiz; 3525 dp->d_reclen += left; 3526 uio_iov_base_add(uiop, left); 3527 uio_iov_len_add(uiop, -(left)); 3528 uio_uio_resid_add(uiop, -(left)); 3529 uiop->uio_offset += left; 3530 } 3531 3532 /* 3533 * If returning no data, assume end of file. 3534 * If not bigenough, return not end of file, since you aren't 3535 * returning all the data 3536 * Otherwise, return the eof flag from the server. 3537 */ 3538 if (eofp != NULL) { 3539 if (tresid == uio_uio_resid(uiop)) 3540 *eofp = 1; 3541 else if (!bigenough) 3542 *eofp = 0; 3543 else 3544 *eofp = eof; 3545 } 3546 3547nfsmout: 3548 if (nd->nd_mrep != NULL) 3549 mbuf_freem(nd->nd_mrep); 3550 return (error); 3551} 3552#endif /* !APPLE */ 3553 3554/* 3555 * Nfs commit rpc 3556 */ 3557APPLESTATIC int 3558nfsrpc_commit(vnode_t vp, u_quad_t offset, int cnt, struct ucred *cred, 3559 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff) 3560{ 3561 u_int32_t *tl; 3562 struct nfsrv_descript nfsd, *nd = &nfsd; 3563 nfsattrbit_t attrbits; 3564 int error; 3565 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 3566 3567 *attrflagp = 0; 3568 NFSCL_REQSTART(nd, NFSPROC_COMMIT, vp); 3569 NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 3570 txdr_hyper(offset, tl); 3571 tl += 2; 3572 *tl = txdr_unsigned(cnt); 3573 if (nd->nd_flag & ND_NFSV4) { 3574 /* 3575 * And do a Getattr op. 3576 */ 3577 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 3578 *tl = txdr_unsigned(NFSV4OP_GETATTR); 3579 NFSGETATTR_ATTRBIT(&attrbits); 3580 (void) nfsrv_putattrbit(nd, &attrbits); 3581 } 3582 error = nfscl_request(nd, vp, p, cred, stuff); 3583 if (error) 3584 return (error); 3585 error = nfscl_wcc_data(nd, vp, nap, attrflagp, NULL, stuff); 3586 if (!error && !nd->nd_repstat) { 3587 NFSM_DISSECT(tl, u_int32_t *, NFSX_VERF); 3588 NFSLOCKMNT(nmp); 3589 if (NFSBCMP(nmp->nm_verf, tl, NFSX_VERF)) { 3590 NFSBCOPY(tl, nmp->nm_verf, NFSX_VERF); 3591 nd->nd_repstat = NFSERR_STALEWRITEVERF; 3592 } 3593 NFSUNLOCKMNT(nmp); 3594 if (nd->nd_flag & ND_NFSV4) 3595 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 3596 } 3597nfsmout: 3598 if (!error && nd->nd_repstat) 3599 error = nd->nd_repstat; 3600 mbuf_freem(nd->nd_mrep); 3601 return (error); 3602} 3603 3604/* 3605 * NFS byte range lock rpc. 3606 * (Mostly just calls one of the three lower level RPC routines.) 3607 */ 3608APPLESTATIC int 3609nfsrpc_advlock(vnode_t vp, off_t size, int op, struct flock *fl, 3610 int reclaim, struct ucred *cred, NFSPROC_T *p, void *id, int flags) 3611{ 3612 struct nfscllockowner *lp; 3613 struct nfsclclient *clp; 3614 struct nfsfh *nfhp; 3615 struct nfsrv_descript nfsd, *nd = &nfsd; 3616 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 3617 u_int64_t off, len; 3618 off_t start, end; 3619 u_int32_t clidrev = 0; 3620 int error = 0, newone = 0, expireret = 0, retrycnt, donelocally; 3621 int callcnt, dorpc; 3622 3623 /* 3624 * Convert the flock structure into a start and end and do POSIX 3625 * bounds checking. 3626 */ 3627 switch (fl->l_whence) { 3628 case SEEK_SET: 3629 case SEEK_CUR: 3630 /* 3631 * Caller is responsible for adding any necessary offset 3632 * when SEEK_CUR is used. 3633 */ 3634 start = fl->l_start; 3635 off = fl->l_start; 3636 break; 3637 case SEEK_END: 3638 start = size + fl->l_start; 3639 off = size + fl->l_start; 3640 break; 3641 default: 3642 return (EINVAL); 3643 }; 3644 if (start < 0) 3645 return (EINVAL); 3646 if (fl->l_len != 0) { 3647 end = start + fl->l_len - 1; 3648 if (end < start) 3649 return (EINVAL); 3650 } 3651 3652 len = fl->l_len; 3653 if (len == 0) 3654 len = NFS64BITSSET; 3655 retrycnt = 0; 3656 do { 3657 nd->nd_repstat = 0; 3658 if (op == F_GETLK) { 3659 error = nfscl_getcl(vnode_mount(vp), cred, p, 1, &clp); 3660 if (error) 3661 return (error); 3662 error = nfscl_lockt(vp, clp, off, len, fl, p, id, flags); 3663 if (!error) { 3664 clidrev = clp->nfsc_clientidrev; 3665 error = nfsrpc_lockt(nd, vp, clp, off, len, fl, cred, 3666 p, id, flags); 3667 } else if (error == -1) { 3668 error = 0; 3669 } 3670 nfscl_clientrelease(clp); 3671 } else if (op == F_UNLCK && fl->l_type == F_UNLCK) { 3672 /* 3673 * We must loop around for all lockowner cases. 3674 */ 3675 callcnt = 0; 3676 error = nfscl_getcl(vnode_mount(vp), cred, p, 1, &clp); 3677 if (error) 3678 return (error); 3679 do { 3680 error = nfscl_relbytelock(vp, off, len, cred, p, callcnt, 3681 clp, id, flags, &lp, &dorpc); 3682 /* 3683 * If it returns a NULL lp, we're done. 3684 */ 3685 if (lp == NULL) { 3686 if (callcnt == 0) 3687 nfscl_clientrelease(clp); 3688 else 3689 nfscl_releasealllocks(clp, vp, p, id, flags); 3690 return (error); 3691 } 3692 if (nmp->nm_clp != NULL) 3693 clidrev = nmp->nm_clp->nfsc_clientidrev; 3694 else 3695 clidrev = 0; 3696 /* 3697 * If the server doesn't support Posix lock semantics, 3698 * only allow locks on the entire file, since it won't 3699 * handle overlapping byte ranges. 3700 * There might still be a problem when a lock 3701 * upgrade/downgrade (read<->write) occurs, since the 3702 * server "might" expect an unlock first? 3703 */ 3704 if (dorpc && (lp->nfsl_open->nfso_posixlock || 3705 (off == 0 && len == NFS64BITSSET))) { 3706 /* 3707 * Since the lock records will go away, we must 3708 * wait for grace and delay here. 3709 */ 3710 do { 3711 error = nfsrpc_locku(nd, nmp, lp, off, len, 3712 NFSV4LOCKT_READ, cred, p, 0); 3713 if ((nd->nd_repstat == NFSERR_GRACE || 3714 nd->nd_repstat == NFSERR_DELAY) && 3715 error == 0) 3716 (void) nfs_catnap(PZERO, (int)nd->nd_repstat, 3717 "nfs_advlock"); 3718 } while ((nd->nd_repstat == NFSERR_GRACE || 3719 nd->nd_repstat == NFSERR_DELAY) && error == 0); 3720 } 3721 callcnt++; 3722 } while (error == 0 && nd->nd_repstat == 0); 3723 nfscl_releasealllocks(clp, vp, p, id, flags); 3724 } else if (op == F_SETLK) { 3725 error = nfscl_getbytelock(vp, off, len, fl->l_type, cred, p, 3726 NULL, 0, id, flags, NULL, NULL, &lp, &newone, &donelocally); 3727 if (error || donelocally) { 3728 return (error); 3729 } 3730 if (nmp->nm_clp != NULL) 3731 clidrev = nmp->nm_clp->nfsc_clientidrev; 3732 else 3733 clidrev = 0; 3734 nfhp = VTONFS(vp)->n_fhp; 3735 if (!lp->nfsl_open->nfso_posixlock && 3736 (off != 0 || len != NFS64BITSSET)) { 3737 error = EINVAL; 3738 } else { 3739 error = nfsrpc_lock(nd, nmp, vp, nfhp->nfh_fh, 3740 nfhp->nfh_len, lp, newone, reclaim, off, 3741 len, fl->l_type, cred, p, 0); 3742 } 3743 if (!error) 3744 error = nd->nd_repstat; 3745 nfscl_lockrelease(lp, error, newone); 3746 } else { 3747 error = EINVAL; 3748 } 3749 if (!error) 3750 error = nd->nd_repstat; 3751 if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 3752 error == NFSERR_STALEDONTRECOVER || 3753 error == NFSERR_STALECLIENTID || error == NFSERR_DELAY || 3754 error == NFSERR_BADSESSION) { 3755 (void) nfs_catnap(PZERO, error, "nfs_advlock"); 3756 } else if ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) 3757 && clidrev != 0) { 3758 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p); 3759 retrycnt++; 3760 } 3761 } while (error == NFSERR_GRACE || 3762 error == NFSERR_STALECLIENTID || error == NFSERR_DELAY || 3763 error == NFSERR_STALEDONTRECOVER || error == NFSERR_STALESTATEID || 3764 error == NFSERR_BADSESSION || 3765 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) && 3766 expireret == 0 && clidrev != 0 && retrycnt < 4)); 3767 if (error && retrycnt >= 4) 3768 error = EIO; 3769 return (error); 3770} 3771 3772/* 3773 * The lower level routine for the LockT case. 3774 */ 3775APPLESTATIC int 3776nfsrpc_lockt(struct nfsrv_descript *nd, vnode_t vp, 3777 struct nfsclclient *clp, u_int64_t off, u_int64_t len, struct flock *fl, 3778 struct ucred *cred, NFSPROC_T *p, void *id, int flags) 3779{ 3780 u_int32_t *tl; 3781 int error, type, size; 3782 uint8_t own[NFSV4CL_LOCKNAMELEN + NFSX_V4FHMAX]; 3783 struct nfsnode *np; 3784 struct nfsmount *nmp; 3785 3786 nmp = VFSTONFS(vp->v_mount); 3787 NFSCL_REQSTART(nd, NFSPROC_LOCKT, vp); 3788 NFSM_BUILD(tl, u_int32_t *, 7 * NFSX_UNSIGNED); 3789 if (fl->l_type == F_RDLCK) 3790 *tl++ = txdr_unsigned(NFSV4LOCKT_READ); 3791 else 3792 *tl++ = txdr_unsigned(NFSV4LOCKT_WRITE); 3793 txdr_hyper(off, tl); 3794 tl += 2; 3795 txdr_hyper(len, tl); 3796 tl += 2; 3797 *tl++ = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[0]; 3798 *tl = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[1]; 3799 nfscl_filllockowner(id, own, flags); 3800 np = VTONFS(vp); 3801 NFSBCOPY(np->n_fhp->nfh_fh, &own[NFSV4CL_LOCKNAMELEN], 3802 np->n_fhp->nfh_len); 3803 (void)nfsm_strtom(nd, own, NFSV4CL_LOCKNAMELEN + np->n_fhp->nfh_len); 3804 error = nfscl_request(nd, vp, p, cred, NULL); 3805 if (error) 3806 return (error); 3807 if (nd->nd_repstat == 0) { 3808 fl->l_type = F_UNLCK; 3809 } else if (nd->nd_repstat == NFSERR_DENIED) { 3810 nd->nd_repstat = 0; 3811 fl->l_whence = SEEK_SET; 3812 NFSM_DISSECT(tl, u_int32_t *, 8 * NFSX_UNSIGNED); 3813 fl->l_start = fxdr_hyper(tl); 3814 tl += 2; 3815 len = fxdr_hyper(tl); 3816 tl += 2; 3817 if (len == NFS64BITSSET) 3818 fl->l_len = 0; 3819 else 3820 fl->l_len = len; 3821 type = fxdr_unsigned(int, *tl++); 3822 if (type == NFSV4LOCKT_WRITE) 3823 fl->l_type = F_WRLCK; 3824 else 3825 fl->l_type = F_RDLCK; 3826 /* 3827 * XXX For now, I have no idea what to do with the 3828 * conflicting lock_owner, so I'll just set the pid == 0 3829 * and skip over the lock_owner. 3830 */ 3831 fl->l_pid = (pid_t)0; 3832 tl += 2; 3833 size = fxdr_unsigned(int, *tl); 3834 if (size < 0 || size > NFSV4_OPAQUELIMIT) 3835 error = EBADRPC; 3836 if (!error) 3837 error = nfsm_advance(nd, NFSM_RNDUP(size), -1); 3838 } else if (nd->nd_repstat == NFSERR_STALECLIENTID || 3839 nd->nd_repstat == NFSERR_BADSESSION) 3840 nfscl_initiate_recovery(clp); 3841nfsmout: 3842 mbuf_freem(nd->nd_mrep); 3843 return (error); 3844} 3845 3846/* 3847 * Lower level function that performs the LockU RPC. 3848 */ 3849static int 3850nfsrpc_locku(struct nfsrv_descript *nd, struct nfsmount *nmp, 3851 struct nfscllockowner *lp, u_int64_t off, u_int64_t len, 3852 u_int32_t type, struct ucred *cred, NFSPROC_T *p, int syscred) 3853{ 3854 u_int32_t *tl; 3855 int error; 3856 3857 nfscl_reqstart(nd, NFSPROC_LOCKU, nmp, lp->nfsl_open->nfso_fh, 3858 lp->nfsl_open->nfso_fhlen, NULL, NULL); 3859 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID + 6 * NFSX_UNSIGNED); 3860 *tl++ = txdr_unsigned(type); 3861 *tl = txdr_unsigned(lp->nfsl_seqid); 3862 if (nfstest_outofseq && 3863 (arc4random() % nfstest_outofseq) == 0) 3864 *tl = txdr_unsigned(lp->nfsl_seqid + 1); 3865 tl++; 3866 if (NFSHASNFSV4N(nmp)) 3867 *tl++ = 0; 3868 else 3869 *tl++ = lp->nfsl_stateid.seqid; 3870 *tl++ = lp->nfsl_stateid.other[0]; 3871 *tl++ = lp->nfsl_stateid.other[1]; 3872 *tl++ = lp->nfsl_stateid.other[2]; 3873 txdr_hyper(off, tl); 3874 tl += 2; 3875 txdr_hyper(len, tl); 3876 if (syscred) 3877 nd->nd_flag |= ND_USEGSSNAME; 3878 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 3879 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 3880 NFSCL_INCRSEQID(lp->nfsl_seqid, nd); 3881 if (error) 3882 return (error); 3883 if (nd->nd_repstat == 0) { 3884 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID); 3885 lp->nfsl_stateid.seqid = *tl++; 3886 lp->nfsl_stateid.other[0] = *tl++; 3887 lp->nfsl_stateid.other[1] = *tl++; 3888 lp->nfsl_stateid.other[2] = *tl; 3889 } else if (nd->nd_repstat == NFSERR_STALESTATEID || 3890 nd->nd_repstat == NFSERR_BADSESSION) 3891 nfscl_initiate_recovery(lp->nfsl_open->nfso_own->nfsow_clp); 3892nfsmout: 3893 mbuf_freem(nd->nd_mrep); 3894 return (error); 3895} 3896 3897/* 3898 * The actual Lock RPC. 3899 */ 3900APPLESTATIC int 3901nfsrpc_lock(struct nfsrv_descript *nd, struct nfsmount *nmp, vnode_t vp, 3902 u_int8_t *nfhp, int fhlen, struct nfscllockowner *lp, int newone, 3903 int reclaim, u_int64_t off, u_int64_t len, short type, struct ucred *cred, 3904 NFSPROC_T *p, int syscred) 3905{ 3906 u_int32_t *tl; 3907 int error, size; 3908 uint8_t own[NFSV4CL_LOCKNAMELEN + NFSX_V4FHMAX]; 3909 3910 nfscl_reqstart(nd, NFSPROC_LOCK, nmp, nfhp, fhlen, NULL, NULL); 3911 NFSM_BUILD(tl, u_int32_t *, 7 * NFSX_UNSIGNED); 3912 if (type == F_RDLCK) 3913 *tl++ = txdr_unsigned(NFSV4LOCKT_READ); 3914 else 3915 *tl++ = txdr_unsigned(NFSV4LOCKT_WRITE); 3916 *tl++ = txdr_unsigned(reclaim); 3917 txdr_hyper(off, tl); 3918 tl += 2; 3919 txdr_hyper(len, tl); 3920 tl += 2; 3921 if (newone) { 3922 *tl = newnfs_true; 3923 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID + 3924 2 * NFSX_UNSIGNED + NFSX_HYPER); 3925 *tl++ = txdr_unsigned(lp->nfsl_open->nfso_own->nfsow_seqid); 3926 if (NFSHASNFSV4N(nmp)) 3927 *tl++ = 0; 3928 else 3929 *tl++ = lp->nfsl_open->nfso_stateid.seqid; 3930 *tl++ = lp->nfsl_open->nfso_stateid.other[0]; 3931 *tl++ = lp->nfsl_open->nfso_stateid.other[1]; 3932 *tl++ = lp->nfsl_open->nfso_stateid.other[2]; 3933 *tl++ = txdr_unsigned(lp->nfsl_seqid); 3934 *tl++ = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[0]; 3935 *tl = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[1]; 3936 NFSBCOPY(lp->nfsl_owner, own, NFSV4CL_LOCKNAMELEN); 3937 NFSBCOPY(nfhp, &own[NFSV4CL_LOCKNAMELEN], fhlen); 3938 (void)nfsm_strtom(nd, own, NFSV4CL_LOCKNAMELEN + fhlen); 3939 } else { 3940 *tl = newnfs_false; 3941 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID + NFSX_UNSIGNED); 3942 if (NFSHASNFSV4N(nmp)) 3943 *tl++ = 0; 3944 else 3945 *tl++ = lp->nfsl_stateid.seqid; 3946 *tl++ = lp->nfsl_stateid.other[0]; 3947 *tl++ = lp->nfsl_stateid.other[1]; 3948 *tl++ = lp->nfsl_stateid.other[2]; 3949 *tl = txdr_unsigned(lp->nfsl_seqid); 3950 if (nfstest_outofseq && 3951 (arc4random() % nfstest_outofseq) == 0) 3952 *tl = txdr_unsigned(lp->nfsl_seqid + 1); 3953 } 3954 if (syscred) 3955 nd->nd_flag |= ND_USEGSSNAME; 3956 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, vp, p, cred, 3957 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 3958 if (error) 3959 return (error); 3960 if (newone) 3961 NFSCL_INCRSEQID(lp->nfsl_open->nfso_own->nfsow_seqid, nd); 3962 NFSCL_INCRSEQID(lp->nfsl_seqid, nd); 3963 if (nd->nd_repstat == 0) { 3964 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID); 3965 lp->nfsl_stateid.seqid = *tl++; 3966 lp->nfsl_stateid.other[0] = *tl++; 3967 lp->nfsl_stateid.other[1] = *tl++; 3968 lp->nfsl_stateid.other[2] = *tl; 3969 } else if (nd->nd_repstat == NFSERR_DENIED) { 3970 NFSM_DISSECT(tl, u_int32_t *, 8 * NFSX_UNSIGNED); 3971 size = fxdr_unsigned(int, *(tl + 7)); 3972 if (size < 0 || size > NFSV4_OPAQUELIMIT) 3973 error = EBADRPC; 3974 if (!error) 3975 error = nfsm_advance(nd, NFSM_RNDUP(size), -1); 3976 } else if (nd->nd_repstat == NFSERR_STALESTATEID || 3977 nd->nd_repstat == NFSERR_BADSESSION) 3978 nfscl_initiate_recovery(lp->nfsl_open->nfso_own->nfsow_clp); 3979nfsmout: 3980 mbuf_freem(nd->nd_mrep); 3981 return (error); 3982} 3983 3984/* 3985 * nfs statfs rpc 3986 * (always called with the vp for the mount point) 3987 */ 3988APPLESTATIC int 3989nfsrpc_statfs(vnode_t vp, struct nfsstatfs *sbp, struct nfsfsinfo *fsp, 3990 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, 3991 void *stuff) 3992{ 3993 u_int32_t *tl = NULL; 3994 struct nfsrv_descript nfsd, *nd = &nfsd; 3995 struct nfsmount *nmp; 3996 nfsattrbit_t attrbits; 3997 int error; 3998 3999 *attrflagp = 0; 4000 nmp = VFSTONFS(vnode_mount(vp)); 4001 if (NFSHASNFSV4(nmp)) { 4002 /* 4003 * For V4, you actually do a getattr. 4004 */ 4005 NFSCL_REQSTART(nd, NFSPROC_GETATTR, vp); 4006 NFSSTATFS_GETATTRBIT(&attrbits); 4007 (void) nfsrv_putattrbit(nd, &attrbits); 4008 nd->nd_flag |= ND_USEGSSNAME; 4009 error = nfscl_request(nd, vp, p, cred, stuff); 4010 if (error) 4011 return (error); 4012 if (nd->nd_repstat == 0) { 4013 error = nfsv4_loadattr(nd, NULL, nap, NULL, NULL, 0, 4014 NULL, NULL, sbp, fsp, NULL, 0, NULL, NULL, NULL, p, 4015 cred); 4016 if (!error) { 4017 nmp->nm_fsid[0] = nap->na_filesid[0]; 4018 nmp->nm_fsid[1] = nap->na_filesid[1]; 4019 NFSSETHASSETFSID(nmp); 4020 *attrflagp = 1; 4021 } 4022 } else { 4023 error = nd->nd_repstat; 4024 } 4025 if (error) 4026 goto nfsmout; 4027 } else { 4028 NFSCL_REQSTART(nd, NFSPROC_FSSTAT, vp); 4029 error = nfscl_request(nd, vp, p, cred, stuff); 4030 if (error) 4031 return (error); 4032 if (nd->nd_flag & ND_NFSV3) { 4033 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 4034 if (error) 4035 goto nfsmout; 4036 } 4037 if (nd->nd_repstat) { 4038 error = nd->nd_repstat; 4039 goto nfsmout; 4040 } 4041 NFSM_DISSECT(tl, u_int32_t *, 4042 NFSX_STATFS(nd->nd_flag & ND_NFSV3)); 4043 } 4044 if (NFSHASNFSV3(nmp)) { 4045 sbp->sf_tbytes = fxdr_hyper(tl); tl += 2; 4046 sbp->sf_fbytes = fxdr_hyper(tl); tl += 2; 4047 sbp->sf_abytes = fxdr_hyper(tl); tl += 2; 4048 sbp->sf_tfiles = fxdr_hyper(tl); tl += 2; 4049 sbp->sf_ffiles = fxdr_hyper(tl); tl += 2; 4050 sbp->sf_afiles = fxdr_hyper(tl); tl += 2; 4051 sbp->sf_invarsec = fxdr_unsigned(u_int32_t, *tl); 4052 } else if (NFSHASNFSV4(nmp) == 0) { 4053 sbp->sf_tsize = fxdr_unsigned(u_int32_t, *tl++); 4054 sbp->sf_bsize = fxdr_unsigned(u_int32_t, *tl++); 4055 sbp->sf_blocks = fxdr_unsigned(u_int32_t, *tl++); 4056 sbp->sf_bfree = fxdr_unsigned(u_int32_t, *tl++); 4057 sbp->sf_bavail = fxdr_unsigned(u_int32_t, *tl); 4058 } 4059nfsmout: 4060 mbuf_freem(nd->nd_mrep); 4061 return (error); 4062} 4063 4064/* 4065 * nfs pathconf rpc 4066 */ 4067APPLESTATIC int 4068nfsrpc_pathconf(vnode_t vp, struct nfsv3_pathconf *pc, 4069 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, 4070 void *stuff) 4071{ 4072 struct nfsrv_descript nfsd, *nd = &nfsd; 4073 struct nfsmount *nmp; 4074 u_int32_t *tl; 4075 nfsattrbit_t attrbits; 4076 int error; 4077 4078 *attrflagp = 0; 4079 nmp = VFSTONFS(vnode_mount(vp)); 4080 if (NFSHASNFSV4(nmp)) { 4081 /* 4082 * For V4, you actually do a getattr. 4083 */ 4084 NFSCL_REQSTART(nd, NFSPROC_GETATTR, vp); 4085 NFSPATHCONF_GETATTRBIT(&attrbits); 4086 (void) nfsrv_putattrbit(nd, &attrbits); 4087 nd->nd_flag |= ND_USEGSSNAME; 4088 error = nfscl_request(nd, vp, p, cred, stuff); 4089 if (error) 4090 return (error); 4091 if (nd->nd_repstat == 0) { 4092 error = nfsv4_loadattr(nd, NULL, nap, NULL, NULL, 0, 4093 pc, NULL, NULL, NULL, NULL, 0, NULL, NULL, NULL, p, 4094 cred); 4095 if (!error) 4096 *attrflagp = 1; 4097 } else { 4098 error = nd->nd_repstat; 4099 } 4100 } else { 4101 NFSCL_REQSTART(nd, NFSPROC_PATHCONF, vp); 4102 error = nfscl_request(nd, vp, p, cred, stuff); 4103 if (error) 4104 return (error); 4105 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 4106 if (nd->nd_repstat && !error) 4107 error = nd->nd_repstat; 4108 if (!error) { 4109 NFSM_DISSECT(tl, u_int32_t *, NFSX_V3PATHCONF); 4110 pc->pc_linkmax = fxdr_unsigned(u_int32_t, *tl++); 4111 pc->pc_namemax = fxdr_unsigned(u_int32_t, *tl++); 4112 pc->pc_notrunc = fxdr_unsigned(u_int32_t, *tl++); 4113 pc->pc_chownrestricted = 4114 fxdr_unsigned(u_int32_t, *tl++); 4115 pc->pc_caseinsensitive = 4116 fxdr_unsigned(u_int32_t, *tl++); 4117 pc->pc_casepreserving = fxdr_unsigned(u_int32_t, *tl); 4118 } 4119 } 4120nfsmout: 4121 mbuf_freem(nd->nd_mrep); 4122 return (error); 4123} 4124 4125/* 4126 * nfs version 3 fsinfo rpc call 4127 */ 4128APPLESTATIC int 4129nfsrpc_fsinfo(vnode_t vp, struct nfsfsinfo *fsp, struct ucred *cred, 4130 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff) 4131{ 4132 u_int32_t *tl; 4133 struct nfsrv_descript nfsd, *nd = &nfsd; 4134 int error; 4135 4136 *attrflagp = 0; 4137 NFSCL_REQSTART(nd, NFSPROC_FSINFO, vp); 4138 error = nfscl_request(nd, vp, p, cred, stuff); 4139 if (error) 4140 return (error); 4141 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 4142 if (nd->nd_repstat && !error) 4143 error = nd->nd_repstat; 4144 if (!error) { 4145 NFSM_DISSECT(tl, u_int32_t *, NFSX_V3FSINFO); 4146 fsp->fs_rtmax = fxdr_unsigned(u_int32_t, *tl++); 4147 fsp->fs_rtpref = fxdr_unsigned(u_int32_t, *tl++); 4148 fsp->fs_rtmult = fxdr_unsigned(u_int32_t, *tl++); 4149 fsp->fs_wtmax = fxdr_unsigned(u_int32_t, *tl++); 4150 fsp->fs_wtpref = fxdr_unsigned(u_int32_t, *tl++); 4151 fsp->fs_wtmult = fxdr_unsigned(u_int32_t, *tl++); 4152 fsp->fs_dtpref = fxdr_unsigned(u_int32_t, *tl++); 4153 fsp->fs_maxfilesize = fxdr_hyper(tl); 4154 tl += 2; 4155 fxdr_nfsv3time(tl, &fsp->fs_timedelta); 4156 tl += 2; 4157 fsp->fs_properties = fxdr_unsigned(u_int32_t, *tl); 4158 } 4159nfsmout: 4160 mbuf_freem(nd->nd_mrep); 4161 return (error); 4162} 4163 4164/* 4165 * This function performs the Renew RPC. 4166 */ 4167APPLESTATIC int 4168nfsrpc_renew(struct nfsclclient *clp, struct nfsclds *dsp, struct ucred *cred, 4169 NFSPROC_T *p) 4170{ 4171 u_int32_t *tl; 4172 struct nfsrv_descript nfsd; 4173 struct nfsrv_descript *nd = &nfsd; 4174 struct nfsmount *nmp; 4175 int error; 4176 struct nfssockreq *nrp; 4177 4178 nmp = clp->nfsc_nmp; 4179 if (nmp == NULL) 4180 return (0); 4181 nfscl_reqstart(nd, NFSPROC_RENEW, nmp, NULL, 0, NULL, 4182 &dsp->nfsclds_sess); 4183 if (!NFSHASNFSV4N(nmp)) { 4184 /* NFSv4.1 just uses a Sequence Op and not a Renew. */ 4185 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 4186 *tl++ = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[0]; 4187 *tl = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[1]; 4188 } 4189 nrp = dsp->nfsclds_sockp; 4190 if (nrp == NULL) 4191 /* If NULL, use the MDS socket. */ 4192 nrp = &nmp->nm_sockreq; 4193 nd->nd_flag |= ND_USEGSSNAME; 4194 error = newnfs_request(nd, nmp, NULL, nrp, NULL, p, cred, 4195 NFS_PROG, NFS_VER4, NULL, 1, NULL, &dsp->nfsclds_sess); 4196 if (error) 4197 return (error); 4198 error = nd->nd_repstat; 4199 mbuf_freem(nd->nd_mrep); 4200 return (error); 4201} 4202 4203/* 4204 * This function performs the Releaselockowner RPC. 4205 */ 4206APPLESTATIC int 4207nfsrpc_rellockown(struct nfsmount *nmp, struct nfscllockowner *lp, 4208 uint8_t *fh, int fhlen, struct ucred *cred, NFSPROC_T *p) 4209{ 4210 struct nfsrv_descript nfsd, *nd = &nfsd; 4211 u_int32_t *tl; 4212 int error; 4213 uint8_t own[NFSV4CL_LOCKNAMELEN + NFSX_V4FHMAX]; 4214 4215 if (NFSHASNFSV4N(nmp)) { 4216 /* For NFSv4.1, do a FreeStateID. */ 4217 nfscl_reqstart(nd, NFSPROC_FREESTATEID, nmp, NULL, 0, NULL, 4218 NULL); 4219 nfsm_stateidtom(nd, &lp->nfsl_stateid, NFSSTATEID_PUTSTATEID); 4220 } else { 4221 nfscl_reqstart(nd, NFSPROC_RELEASELCKOWN, nmp, NULL, 0, NULL, 4222 NULL); 4223 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 4224 *tl++ = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[0]; 4225 *tl = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[1]; 4226 NFSBCOPY(lp->nfsl_owner, own, NFSV4CL_LOCKNAMELEN); 4227 NFSBCOPY(fh, &own[NFSV4CL_LOCKNAMELEN], fhlen); 4228 (void)nfsm_strtom(nd, own, NFSV4CL_LOCKNAMELEN + fhlen); 4229 } 4230 nd->nd_flag |= ND_USEGSSNAME; 4231 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 4232 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4233 if (error) 4234 return (error); 4235 error = nd->nd_repstat; 4236 mbuf_freem(nd->nd_mrep); 4237 return (error); 4238} 4239 4240/* 4241 * This function performs the Compound to get the mount pt FH. 4242 */ 4243APPLESTATIC int 4244nfsrpc_getdirpath(struct nfsmount *nmp, u_char *dirpath, struct ucred *cred, 4245 NFSPROC_T *p) 4246{ 4247 u_int32_t *tl; 4248 struct nfsrv_descript nfsd; 4249 struct nfsrv_descript *nd = &nfsd; 4250 u_char *cp, *cp2; 4251 int error, cnt, len, setnil; 4252 u_int32_t *opcntp; 4253 4254 nfscl_reqstart(nd, NFSPROC_PUTROOTFH, nmp, NULL, 0, &opcntp, NULL); 4255 cp = dirpath; 4256 cnt = 0; 4257 do { 4258 setnil = 0; 4259 while (*cp == '/') 4260 cp++; 4261 cp2 = cp; 4262 while (*cp2 != '\0' && *cp2 != '/') 4263 cp2++; 4264 if (*cp2 == '/') { 4265 setnil = 1; 4266 *cp2 = '\0'; 4267 } 4268 if (cp2 != cp) { 4269 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 4270 *tl = txdr_unsigned(NFSV4OP_LOOKUP); 4271 nfsm_strtom(nd, cp, strlen(cp)); 4272 cnt++; 4273 } 4274 if (setnil) 4275 *cp2++ = '/'; 4276 cp = cp2; 4277 } while (*cp != '\0'); 4278 if (NFSHASNFSV4N(nmp)) 4279 /* Has a Sequence Op done by nfscl_reqstart(). */ 4280 *opcntp = txdr_unsigned(3 + cnt); 4281 else 4282 *opcntp = txdr_unsigned(2 + cnt); 4283 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 4284 *tl = txdr_unsigned(NFSV4OP_GETFH); 4285 nd->nd_flag |= ND_USEGSSNAME; 4286 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 4287 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4288 if (error) 4289 return (error); 4290 if (nd->nd_repstat == 0) { 4291 NFSM_DISSECT(tl, u_int32_t *, (3 + 2 * cnt) * NFSX_UNSIGNED); 4292 tl += (2 + 2 * cnt); 4293 if ((len = fxdr_unsigned(int, *tl)) <= 0 || 4294 len > NFSX_FHMAX) { 4295 nd->nd_repstat = NFSERR_BADXDR; 4296 } else { 4297 nd->nd_repstat = nfsrv_mtostr(nd, nmp->nm_fh, len); 4298 if (nd->nd_repstat == 0) 4299 nmp->nm_fhsize = len; 4300 } 4301 } 4302 error = nd->nd_repstat; 4303nfsmout: 4304 mbuf_freem(nd->nd_mrep); 4305 return (error); 4306} 4307 4308/* 4309 * This function performs the Delegreturn RPC. 4310 */ 4311APPLESTATIC int 4312nfsrpc_delegreturn(struct nfscldeleg *dp, struct ucred *cred, 4313 struct nfsmount *nmp, NFSPROC_T *p, int syscred) 4314{ 4315 u_int32_t *tl; 4316 struct nfsrv_descript nfsd; 4317 struct nfsrv_descript *nd = &nfsd; 4318 int error; 4319 4320 nfscl_reqstart(nd, NFSPROC_DELEGRETURN, nmp, dp->nfsdl_fh, 4321 dp->nfsdl_fhlen, NULL, NULL); 4322 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID); 4323 if (NFSHASNFSV4N(nmp)) 4324 *tl++ = 0; 4325 else 4326 *tl++ = dp->nfsdl_stateid.seqid; 4327 *tl++ = dp->nfsdl_stateid.other[0]; 4328 *tl++ = dp->nfsdl_stateid.other[1]; 4329 *tl = dp->nfsdl_stateid.other[2]; 4330 if (syscred) 4331 nd->nd_flag |= ND_USEGSSNAME; 4332 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 4333 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4334 if (error) 4335 return (error); 4336 error = nd->nd_repstat; 4337 mbuf_freem(nd->nd_mrep); 4338 return (error); 4339} 4340 4341/* 4342 * nfs getacl call. 4343 */ 4344APPLESTATIC int 4345nfsrpc_getacl(vnode_t vp, struct ucred *cred, NFSPROC_T *p, 4346 struct acl *aclp, void *stuff) 4347{ 4348 struct nfsrv_descript nfsd, *nd = &nfsd; 4349 int error; 4350 nfsattrbit_t attrbits; 4351 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 4352 4353 if (nfsrv_useacl == 0 || !NFSHASNFSV4(nmp)) 4354 return (EOPNOTSUPP); 4355 NFSCL_REQSTART(nd, NFSPROC_GETACL, vp); 4356 NFSZERO_ATTRBIT(&attrbits); 4357 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_ACL); 4358 (void) nfsrv_putattrbit(nd, &attrbits); 4359 error = nfscl_request(nd, vp, p, cred, stuff); 4360 if (error) 4361 return (error); 4362 if (!nd->nd_repstat) 4363 error = nfsv4_loadattr(nd, vp, NULL, NULL, NULL, 0, NULL, 4364 NULL, NULL, NULL, aclp, 0, NULL, NULL, NULL, p, cred); 4365 else 4366 error = nd->nd_repstat; 4367 mbuf_freem(nd->nd_mrep); 4368 return (error); 4369} 4370 4371/* 4372 * nfs setacl call. 4373 */ 4374APPLESTATIC int 4375nfsrpc_setacl(vnode_t vp, struct ucred *cred, NFSPROC_T *p, 4376 struct acl *aclp, void *stuff) 4377{ 4378 int error; 4379 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 4380 4381 if (nfsrv_useacl == 0 || !NFSHASNFSV4(nmp)) 4382 return (EOPNOTSUPP); 4383 error = nfsrpc_setattr(vp, NULL, aclp, cred, p, NULL, NULL, stuff); 4384 return (error); 4385} 4386 4387/* 4388 * nfs setacl call. 4389 */ 4390static int 4391nfsrpc_setaclrpc(vnode_t vp, struct ucred *cred, NFSPROC_T *p, 4392 struct acl *aclp, nfsv4stateid_t *stateidp, void *stuff) 4393{ 4394 struct nfsrv_descript nfsd, *nd = &nfsd; 4395 int error; 4396 nfsattrbit_t attrbits; 4397 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 4398 4399 if (!NFSHASNFSV4(nmp)) 4400 return (EOPNOTSUPP); 4401 NFSCL_REQSTART(nd, NFSPROC_SETACL, vp); 4402 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID); 4403 NFSZERO_ATTRBIT(&attrbits); 4404 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_ACL); 4405 (void) nfsv4_fillattr(nd, vnode_mount(vp), vp, aclp, NULL, NULL, 0, 4406 &attrbits, NULL, NULL, 0, 0, 0, 0, (uint64_t)0); 4407 error = nfscl_request(nd, vp, p, cred, stuff); 4408 if (error) 4409 return (error); 4410 /* Don't care about the pre/postop attributes */ 4411 mbuf_freem(nd->nd_mrep); 4412 return (nd->nd_repstat); 4413} 4414 4415/* 4416 * Do the NFSv4.1 Exchange ID. 4417 */ 4418int 4419nfsrpc_exchangeid(struct nfsmount *nmp, struct nfsclclient *clp, 4420 struct nfssockreq *nrp, uint32_t exchflags, struct nfsclds **dspp, 4421 struct ucred *cred, NFSPROC_T *p) 4422{ 4423 uint32_t *tl, v41flags; 4424 struct nfsrv_descript nfsd; 4425 struct nfsrv_descript *nd = &nfsd; 4426 struct nfsclds *dsp; 4427 struct timespec verstime; 4428 int error, len; 4429 4430 *dspp = NULL; 4431 nfscl_reqstart(nd, NFSPROC_EXCHANGEID, nmp, NULL, 0, NULL, NULL); 4432 NFSM_BUILD(tl, uint32_t *, 2 * NFSX_UNSIGNED); 4433 *tl++ = txdr_unsigned(nfsboottime.tv_sec); /* Client owner */ 4434 *tl = txdr_unsigned(clp->nfsc_rev); 4435 (void) nfsm_strtom(nd, clp->nfsc_id, clp->nfsc_idlen); 4436 4437 NFSM_BUILD(tl, uint32_t *, 3 * NFSX_UNSIGNED); 4438 *tl++ = txdr_unsigned(exchflags); 4439 *tl++ = txdr_unsigned(NFSV4EXCH_SP4NONE); 4440 4441 /* Set the implementation id4 */ 4442 *tl = txdr_unsigned(1); 4443 (void) nfsm_strtom(nd, "freebsd.org", strlen("freebsd.org")); 4444 (void) nfsm_strtom(nd, version, strlen(version)); 4445 NFSM_BUILD(tl, uint32_t *, NFSX_V4TIME); 4446 verstime.tv_sec = 1293840000; /* Jan 1, 2011 */ 4447 verstime.tv_nsec = 0; 4448 txdr_nfsv4time(&verstime, tl); 4449 nd->nd_flag |= ND_USEGSSNAME; 4450 error = newnfs_request(nd, nmp, NULL, nrp, NULL, p, cred, 4451 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4452 NFSCL_DEBUG(1, "exchangeid err=%d reps=%d\n", error, 4453 (int)nd->nd_repstat); 4454 if (error != 0) 4455 return (error); 4456 if (nd->nd_repstat == 0) { 4457 NFSM_DISSECT(tl, uint32_t *, 6 * NFSX_UNSIGNED + NFSX_HYPER); 4458 len = fxdr_unsigned(int, *(tl + 7)); 4459 if (len < 0 || len > NFSV4_OPAQUELIMIT) { 4460 error = NFSERR_BADXDR; 4461 goto nfsmout; 4462 } 4463 dsp = malloc(sizeof(struct nfsclds) + len, M_NFSCLDS, 4464 M_WAITOK | M_ZERO); 4465 dsp->nfsclds_expire = NFSD_MONOSEC + clp->nfsc_renew; 4466 dsp->nfsclds_servownlen = len; 4467 dsp->nfsclds_sess.nfsess_clientid.lval[0] = *tl++; 4468 dsp->nfsclds_sess.nfsess_clientid.lval[1] = *tl++; 4469 dsp->nfsclds_sess.nfsess_sequenceid = 4470 fxdr_unsigned(uint32_t, *tl++); 4471 v41flags = fxdr_unsigned(uint32_t, *tl); 4472 if ((v41flags & NFSV4EXCH_USEPNFSMDS) != 0 && 4473 NFSHASPNFSOPT(nmp)) { 4474 NFSCL_DEBUG(1, "set PNFS\n"); 4475 NFSLOCKMNT(nmp); 4476 nmp->nm_state |= NFSSTA_PNFS; 4477 NFSUNLOCKMNT(nmp); 4478 dsp->nfsclds_flags |= NFSCLDS_MDS; 4479 } 4480 if ((v41flags & NFSV4EXCH_USEPNFSDS) != 0) 4481 dsp->nfsclds_flags |= NFSCLDS_DS; 4482 if (len > 0) 4483 nd->nd_repstat = nfsrv_mtostr(nd, 4484 dsp->nfsclds_serverown, len); 4485 if (nd->nd_repstat == 0) { 4486 mtx_init(&dsp->nfsclds_mtx, "nfsds", NULL, MTX_DEF); 4487 mtx_init(&dsp->nfsclds_sess.nfsess_mtx, "nfssession", 4488 NULL, MTX_DEF); 4489 nfscl_initsessionslots(&dsp->nfsclds_sess); 4490 *dspp = dsp; 4491 } else 4492 free(dsp, M_NFSCLDS); 4493 } 4494 error = nd->nd_repstat; 4495nfsmout: 4496 mbuf_freem(nd->nd_mrep); 4497 return (error); 4498} 4499 4500/* 4501 * Do the NFSv4.1 Create Session. 4502 */ 4503int 4504nfsrpc_createsession(struct nfsmount *nmp, struct nfsclsession *sep, 4505 struct nfssockreq *nrp, uint32_t sequenceid, int mds, struct ucred *cred, 4506 NFSPROC_T *p) 4507{ 4508 uint32_t crflags, *tl; 4509 struct nfsrv_descript nfsd; 4510 struct nfsrv_descript *nd = &nfsd; 4511 int error, irdcnt; 4512 4513 nfscl_reqstart(nd, NFSPROC_CREATESESSION, nmp, NULL, 0, NULL, NULL); 4514 NFSM_BUILD(tl, uint32_t *, 4 * NFSX_UNSIGNED); 4515 *tl++ = sep->nfsess_clientid.lval[0]; 4516 *tl++ = sep->nfsess_clientid.lval[1]; 4517 *tl++ = txdr_unsigned(sequenceid); 4518 crflags = (NFSMNT_RDONLY(nmp->nm_mountp) ? 0 : NFSV4CRSESS_PERSIST); 4519 if (nfscl_enablecallb != 0 && nfs_numnfscbd > 0) 4520 crflags |= NFSV4CRSESS_CONNBACKCHAN; 4521 *tl = txdr_unsigned(crflags); 4522 4523 /* Fill in fore channel attributes. */ 4524 NFSM_BUILD(tl, uint32_t *, 7 * NFSX_UNSIGNED); 4525 *tl++ = 0; /* Header pad size */ 4526 *tl++ = txdr_unsigned(100000); /* Max request size */ 4527 *tl++ = txdr_unsigned(100000); /* Max response size */ 4528 *tl++ = txdr_unsigned(4096); /* Max response size cached */ 4529 *tl++ = txdr_unsigned(20); /* Max operations */ 4530 *tl++ = txdr_unsigned(64); /* Max slots */ 4531 *tl = 0; /* No rdma ird */ 4532 4533 /* Fill in back channel attributes. */ 4534 NFSM_BUILD(tl, uint32_t *, 7 * NFSX_UNSIGNED); 4535 *tl++ = 0; /* Header pad size */ 4536 *tl++ = txdr_unsigned(10000); /* Max request size */ 4537 *tl++ = txdr_unsigned(10000); /* Max response size */ 4538 *tl++ = txdr_unsigned(4096); /* Max response size cached */ 4539 *tl++ = txdr_unsigned(4); /* Max operations */ 4540 *tl++ = txdr_unsigned(NFSV4_CBSLOTS); /* Max slots */ 4541 *tl = 0; /* No rdma ird */ 4542 4543 NFSM_BUILD(tl, uint32_t *, 8 * NFSX_UNSIGNED); 4544 *tl++ = txdr_unsigned(NFS_CALLBCKPROG); /* Call back prog # */ 4545 4546 /* Allow AUTH_SYS callbacks as uid, gid == 0. */ 4547 *tl++ = txdr_unsigned(1); /* Auth_sys only */ 4548 *tl++ = txdr_unsigned(AUTH_SYS); /* AUTH_SYS type */ 4549 *tl++ = txdr_unsigned(nfsboottime.tv_sec); /* time stamp */ 4550 *tl++ = 0; /* Null machine name */ 4551 *tl++ = 0; /* Uid == 0 */ 4552 *tl++ = 0; /* Gid == 0 */ 4553 *tl = 0; /* No additional gids */ 4554 nd->nd_flag |= ND_USEGSSNAME; 4555 error = newnfs_request(nd, nmp, NULL, nrp, NULL, p, cred, NFS_PROG, 4556 NFS_VER4, NULL, 1, NULL, NULL); 4557 if (error != 0) 4558 return (error); 4559 if (nd->nd_repstat == 0) { 4560 NFSM_DISSECT(tl, uint32_t *, NFSX_V4SESSIONID + 4561 2 * NFSX_UNSIGNED); 4562 bcopy(tl, sep->nfsess_sessionid, NFSX_V4SESSIONID); 4563 tl += NFSX_V4SESSIONID / NFSX_UNSIGNED; 4564 sep->nfsess_sequenceid = fxdr_unsigned(uint32_t, *tl++); 4565 crflags = fxdr_unsigned(uint32_t, *tl); 4566 if ((crflags & NFSV4CRSESS_PERSIST) != 0 && mds != 0) { 4567 NFSLOCKMNT(nmp); 4568 nmp->nm_state |= NFSSTA_SESSPERSIST; 4569 NFSUNLOCKMNT(nmp); 4570 } 4571 4572 /* Get the fore channel slot count. */ 4573 NFSM_DISSECT(tl, uint32_t *, 7 * NFSX_UNSIGNED); 4574 tl += 3; /* Skip the other counts. */ 4575 sep->nfsess_maxcache = fxdr_unsigned(int, *tl++); 4576 tl++; 4577 sep->nfsess_foreslots = fxdr_unsigned(uint16_t, *tl++); 4578 NFSCL_DEBUG(4, "fore slots=%d\n", (int)sep->nfsess_foreslots); 4579 irdcnt = fxdr_unsigned(int, *tl); 4580 if (irdcnt > 0) 4581 NFSM_DISSECT(tl, uint32_t *, irdcnt * NFSX_UNSIGNED); 4582 4583 /* and the back channel slot count. */ 4584 NFSM_DISSECT(tl, uint32_t *, 7 * NFSX_UNSIGNED); 4585 tl += 5; 4586 sep->nfsess_backslots = fxdr_unsigned(uint16_t, *tl); 4587 NFSCL_DEBUG(4, "back slots=%d\n", (int)sep->nfsess_backslots); 4588 } 4589 error = nd->nd_repstat; 4590nfsmout: 4591 mbuf_freem(nd->nd_mrep); 4592 return (error); 4593} 4594 4595/* 4596 * Do the NFSv4.1 Destroy Session. 4597 */ 4598int 4599nfsrpc_destroysession(struct nfsmount *nmp, struct nfsclclient *clp, 4600 struct ucred *cred, NFSPROC_T *p) 4601{ 4602 uint32_t *tl; 4603 struct nfsrv_descript nfsd; 4604 struct nfsrv_descript *nd = &nfsd; 4605 int error; 4606 4607 nfscl_reqstart(nd, NFSPROC_DESTROYSESSION, nmp, NULL, 0, NULL, NULL); 4608 NFSM_BUILD(tl, uint32_t *, NFSX_V4SESSIONID); 4609 bcopy(NFSMNT_MDSSESSION(nmp)->nfsess_sessionid, tl, NFSX_V4SESSIONID); 4610 nd->nd_flag |= ND_USEGSSNAME; 4611 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 4612 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4613 if (error != 0) 4614 return (error); 4615 error = nd->nd_repstat; 4616 mbuf_freem(nd->nd_mrep); 4617 return (error); 4618} 4619 4620/* 4621 * Do the NFSv4.1 Destroy Client. 4622 */ 4623int 4624nfsrpc_destroyclient(struct nfsmount *nmp, struct nfsclclient *clp, 4625 struct ucred *cred, NFSPROC_T *p) 4626{ 4627 uint32_t *tl; 4628 struct nfsrv_descript nfsd; 4629 struct nfsrv_descript *nd = &nfsd; 4630 int error; 4631 4632 nfscl_reqstart(nd, NFSPROC_DESTROYCLIENT, nmp, NULL, 0, NULL, NULL); 4633 NFSM_BUILD(tl, uint32_t *, 2 * NFSX_UNSIGNED); 4634 *tl++ = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[0]; 4635 *tl = NFSMNT_MDSSESSION(nmp)->nfsess_clientid.lval[1]; 4636 nd->nd_flag |= ND_USEGSSNAME; 4637 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 4638 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4639 if (error != 0) 4640 return (error); 4641 error = nd->nd_repstat; 4642 mbuf_freem(nd->nd_mrep); 4643 return (error); 4644} 4645 4646/* 4647 * Do the NFSv4.1 LayoutGet. 4648 */ 4649int 4650nfsrpc_layoutget(struct nfsmount *nmp, uint8_t *fhp, int fhlen, int iomode, 4651 uint64_t offset, uint64_t len, uint64_t minlen, int layoutlen, 4652 nfsv4stateid_t *stateidp, int *retonclosep, struct nfsclflayouthead *flhp, 4653 struct ucred *cred, NFSPROC_T *p, void *stuff) 4654{ 4655 uint32_t *tl; 4656 struct nfsrv_descript nfsd, *nd = &nfsd; 4657 struct nfsfh *nfhp; 4658 struct nfsclflayout *flp, *prevflp, *tflp; 4659 int cnt, error, gotiomode, fhcnt, nfhlen, i, j; 4660 uint8_t *cp; 4661 uint64_t retlen; 4662 4663 flp = NULL; 4664 gotiomode = -1; 4665 nfscl_reqstart(nd, NFSPROC_LAYOUTGET, nmp, fhp, fhlen, NULL, NULL); 4666 NFSM_BUILD(tl, uint32_t *, 4 * NFSX_UNSIGNED + 3 * NFSX_HYPER + 4667 NFSX_STATEID); 4668 *tl++ = newnfs_false; /* Don't signal availability. */ 4669 *tl++ = txdr_unsigned(NFSLAYOUT_NFSV4_1_FILES); 4670 *tl++ = txdr_unsigned(iomode); 4671 txdr_hyper(offset, tl); 4672 tl += 2; 4673 txdr_hyper(len, tl); 4674 tl += 2; 4675 txdr_hyper(minlen, tl); 4676 tl += 2; 4677 *tl++ = txdr_unsigned(stateidp->seqid); 4678 NFSCL_DEBUG(4, "layget seq=%d\n", (int)stateidp->seqid); 4679 *tl++ = stateidp->other[0]; 4680 *tl++ = stateidp->other[1]; 4681 *tl++ = stateidp->other[2]; 4682 *tl = txdr_unsigned(layoutlen); 4683 nd->nd_flag |= ND_USEGSSNAME; 4684 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 4685 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4686 if (error != 0) 4687 return (error); 4688 if (nd->nd_repstat == 0) { 4689 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED + NFSX_STATEID); 4690 if (*tl++ != 0) 4691 *retonclosep = 1; 4692 else 4693 *retonclosep = 0; 4694 stateidp->seqid = fxdr_unsigned(uint32_t, *tl++); 4695 NFSCL_DEBUG(4, "retoncls=%d stseq=%d\n", *retonclosep, 4696 (int)stateidp->seqid); 4697 stateidp->other[0] = *tl++; 4698 stateidp->other[1] = *tl++; 4699 stateidp->other[2] = *tl++; 4700 cnt = fxdr_unsigned(int, *tl); 4701 NFSCL_DEBUG(4, "layg cnt=%d\n", cnt); 4702 if (cnt <= 0 || cnt > 10000) { 4703 /* Don't accept more than 10000 layouts in reply. */ 4704 error = NFSERR_BADXDR; 4705 goto nfsmout; 4706 } 4707 for (i = 0; i < cnt; i++) { 4708 /* Dissect all the way to the file handle cnt. */ 4709 NFSM_DISSECT(tl, uint32_t *, 3 * NFSX_HYPER + 4710 6 * NFSX_UNSIGNED + NFSX_V4DEVICEID); 4711 fhcnt = fxdr_unsigned(int, *(tl + 11 + 4712 NFSX_V4DEVICEID / NFSX_UNSIGNED)); 4713 NFSCL_DEBUG(4, "fhcnt=%d\n", fhcnt); 4714 if (fhcnt < 0 || fhcnt > 100) { 4715 /* Don't accept more than 100 file handles. */ 4716 error = NFSERR_BADXDR; 4717 goto nfsmout; 4718 } 4719 if (fhcnt > 1) 4720 flp = malloc(sizeof(*flp) + (fhcnt - 1) * 4721 sizeof(struct nfsfh *), 4722 M_NFSFLAYOUT, M_WAITOK); 4723 else 4724 flp = malloc(sizeof(*flp), 4725 M_NFSFLAYOUT, M_WAITOK); 4726 flp->nfsfl_flags = 0; 4727 flp->nfsfl_fhcnt = 0; 4728 flp->nfsfl_devp = NULL; 4729 flp->nfsfl_off = fxdr_hyper(tl); tl += 2; 4730 retlen = fxdr_hyper(tl); tl += 2; 4731 if (flp->nfsfl_off + retlen < flp->nfsfl_off) 4732 flp->nfsfl_end = UINT64_MAX - flp->nfsfl_off; 4733 else 4734 flp->nfsfl_end = flp->nfsfl_off + retlen; 4735 flp->nfsfl_iomode = fxdr_unsigned(int, *tl++); 4736 if (gotiomode == -1) 4737 gotiomode = flp->nfsfl_iomode; 4738 NFSCL_DEBUG(4, "layg reqiom=%d retiom=%d\n", iomode, 4739 (int)flp->nfsfl_iomode); 4740 if (fxdr_unsigned(int, *tl++) != 4741 NFSLAYOUT_NFSV4_1_FILES) { 4742 printf("NFSv4.1: got non-files layout\n"); 4743 error = NFSERR_BADXDR; 4744 goto nfsmout; 4745 } 4746 NFSBCOPY(++tl, flp->nfsfl_dev, NFSX_V4DEVICEID); 4747 tl += (NFSX_V4DEVICEID / NFSX_UNSIGNED); 4748 flp->nfsfl_util = fxdr_unsigned(uint32_t, *tl++); 4749 NFSCL_DEBUG(4, "flutil=0x%x\n", flp->nfsfl_util); 4750 flp->nfsfl_stripe1 = fxdr_unsigned(uint32_t, *tl++); 4751 flp->nfsfl_patoff = fxdr_hyper(tl); tl += 2; 4752 if (fxdr_unsigned(int, *tl) != fhcnt) { 4753 printf("EEK! bad fhcnt\n"); 4754 error = NFSERR_BADXDR; 4755 goto nfsmout; 4756 } 4757 for (j = 0; j < fhcnt; j++) { 4758 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 4759 nfhlen = fxdr_unsigned(int, *tl); 4760 if (nfhlen <= 0 || nfhlen > NFSX_V4FHMAX) { 4761 error = NFSERR_BADXDR; 4762 goto nfsmout; 4763 } 4764 nfhp = malloc(sizeof(*nfhp) + nfhlen - 1, 4765 M_NFSFH, M_WAITOK); 4766 flp->nfsfl_fh[j] = nfhp; 4767 flp->nfsfl_fhcnt++; 4768 nfhp->nfh_len = nfhlen; 4769 NFSM_DISSECT(cp, uint8_t *, NFSM_RNDUP(nfhlen)); 4770 NFSBCOPY(cp, nfhp->nfh_fh, nfhlen); 4771 } 4772 if (flp->nfsfl_iomode == gotiomode) { 4773 /* Keep the list in increasing offset order. */ 4774 tflp = LIST_FIRST(flhp); 4775 prevflp = NULL; 4776 while (tflp != NULL && 4777 tflp->nfsfl_off < flp->nfsfl_off) { 4778 prevflp = tflp; 4779 tflp = LIST_NEXT(tflp, nfsfl_list); 4780 } 4781 if (prevflp == NULL) 4782 LIST_INSERT_HEAD(flhp, flp, nfsfl_list); 4783 else 4784 LIST_INSERT_AFTER(prevflp, flp, 4785 nfsfl_list); 4786 } else { 4787 printf("nfscl_layoutget(): got wrong iomode\n"); 4788 nfscl_freeflayout(flp); 4789 } 4790 flp = NULL; 4791 } 4792 } 4793 if (nd->nd_repstat != 0 && error == 0) 4794 error = nd->nd_repstat; 4795nfsmout: 4796 if (error != 0 && flp != NULL) 4797 nfscl_freeflayout(flp); 4798 mbuf_freem(nd->nd_mrep); 4799 return (error); 4800} 4801 4802/* 4803 * Do the NFSv4.1 Get Device Info. 4804 */ 4805int 4806nfsrpc_getdeviceinfo(struct nfsmount *nmp, uint8_t *deviceid, int layouttype, 4807 uint32_t *notifybitsp, struct nfscldevinfo **ndip, struct ucred *cred, 4808 NFSPROC_T *p) 4809{ 4810 uint32_t cnt, *tl; 4811 struct nfsrv_descript nfsd; 4812 struct nfsrv_descript *nd = &nfsd; 4813 struct sockaddr_storage ss; 4814 struct nfsclds *dsp = NULL, **dspp; 4815 struct nfscldevinfo *ndi; 4816 int addrcnt, bitcnt, error, i, isudp, j, pos, safilled, stripecnt; 4817 uint8_t stripeindex; 4818 4819 *ndip = NULL; 4820 ndi = NULL; 4821 nfscl_reqstart(nd, NFSPROC_GETDEVICEINFO, nmp, NULL, 0, NULL, NULL); 4822 NFSM_BUILD(tl, uint32_t *, NFSX_V4DEVICEID + 3 * NFSX_UNSIGNED); 4823 NFSBCOPY(deviceid, tl, NFSX_V4DEVICEID); 4824 tl += (NFSX_V4DEVICEID / NFSX_UNSIGNED); 4825 *tl++ = txdr_unsigned(layouttype); 4826 *tl++ = txdr_unsigned(100000); 4827 if (notifybitsp != NULL && *notifybitsp != 0) { 4828 *tl = txdr_unsigned(1); /* One word of bits. */ 4829 NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED); 4830 *tl = txdr_unsigned(*notifybitsp); 4831 } else 4832 *tl = txdr_unsigned(0); 4833 nd->nd_flag |= ND_USEGSSNAME; 4834 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 4835 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4836 if (error != 0) 4837 return (error); 4838 if (nd->nd_repstat == 0) { 4839 NFSM_DISSECT(tl, uint32_t *, 3 * NFSX_UNSIGNED); 4840 if (layouttype != fxdr_unsigned(int, *tl++)) 4841 printf("EEK! devinfo layout type not same!\n"); 4842 stripecnt = fxdr_unsigned(int, *++tl); 4843 NFSCL_DEBUG(4, "stripecnt=%d\n", stripecnt); 4844 if (stripecnt < 1 || stripecnt > 4096) { 4845 printf("NFS devinfo stripecnt %d: out of range\n", 4846 stripecnt); 4847 error = NFSERR_BADXDR; 4848 goto nfsmout; 4849 } 4850 NFSM_DISSECT(tl, uint32_t *, (stripecnt + 1) * NFSX_UNSIGNED); 4851 addrcnt = fxdr_unsigned(int, *(tl + stripecnt)); 4852 NFSCL_DEBUG(4, "addrcnt=%d\n", addrcnt); 4853 if (addrcnt < 1 || addrcnt > 128) { 4854 printf("NFS devinfo addrcnt %d: out of range\n", 4855 addrcnt); 4856 error = NFSERR_BADXDR; 4857 goto nfsmout; 4858 } 4859 4860 /* 4861 * Now we know how many stripe indices and addresses, so 4862 * we can allocate the structure the correct size. 4863 */ 4864 i = (stripecnt * sizeof(uint8_t)) / sizeof(struct nfsclds *) 4865 + 1; 4866 NFSCL_DEBUG(4, "stripeindices=%d\n", i); 4867 ndi = malloc(sizeof(*ndi) + (addrcnt + i) * 4868 sizeof(struct nfsclds *), M_NFSDEVINFO, M_WAITOK | M_ZERO); 4869 NFSBCOPY(deviceid, ndi->nfsdi_deviceid, NFSX_V4DEVICEID); 4870 ndi->nfsdi_refcnt = 0; 4871 ndi->nfsdi_stripecnt = stripecnt; 4872 ndi->nfsdi_addrcnt = addrcnt; 4873 /* Fill in the stripe indices. */ 4874 for (i = 0; i < stripecnt; i++) { 4875 stripeindex = fxdr_unsigned(uint8_t, *tl++); 4876 NFSCL_DEBUG(4, "stripeind=%d\n", stripeindex); 4877 if (stripeindex >= addrcnt) { 4878 printf("NFS devinfo stripeindex %d: too big\n", 4879 (int)stripeindex); 4880 error = NFSERR_BADXDR; 4881 goto nfsmout; 4882 } 4883 nfsfldi_setstripeindex(ndi, i, stripeindex); 4884 } 4885 4886 /* Now, dissect the server address(es). */ 4887 safilled = 0; 4888 for (i = 0; i < addrcnt; i++) { 4889 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 4890 cnt = fxdr_unsigned(uint32_t, *tl); 4891 if (cnt == 0) { 4892 printf("NFS devinfo 0 len addrlist\n"); 4893 error = NFSERR_BADXDR; 4894 goto nfsmout; 4895 } 4896 dspp = nfsfldi_addr(ndi, i); 4897 pos = arc4random() % cnt; /* Choose one. */ 4898 safilled = 0; 4899 for (j = 0; j < cnt; j++) { 4900 error = nfsv4_getipaddr(nd, &ss, &isudp); 4901 if (error != 0 && error != EPERM) { 4902 error = NFSERR_BADXDR; 4903 goto nfsmout; 4904 } 4905 if (error == 0 && isudp == 0) { 4906 /* 4907 * The algorithm is: 4908 * - use "pos" entry if it is of the 4909 * same af_family or none of them 4910 * is of the same af_family 4911 * else 4912 * - use the first one of the same 4913 * af_family. 4914 */ 4915 if ((safilled == 0 && ss.ss_family == 4916 nmp->nm_nam->sa_family) || 4917 (j == pos && 4918 (safilled == 0 || ss.ss_family == 4919 nmp->nm_nam->sa_family)) || 4920 (safilled == 1 && ss.ss_family == 4921 nmp->nm_nam->sa_family)) { 4922 error = nfsrpc_fillsa(nmp, &ss, 4923 &dsp, p); 4924 if (error == 0) { 4925 *dspp = dsp; 4926 if (ss.ss_family == 4927 nmp->nm_nam->sa_family) 4928 safilled = 2; 4929 else 4930 safilled = 1; 4931 } 4932 } 4933 } 4934 } 4935 if (safilled == 0) 4936 break; 4937 } 4938 4939 /* And the notify bits. */ 4940 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 4941 if (safilled != 0) { 4942 bitcnt = fxdr_unsigned(int, *tl); 4943 if (bitcnt > 0) { 4944 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 4945 if (notifybitsp != NULL) 4946 *notifybitsp = 4947 fxdr_unsigned(uint32_t, *tl); 4948 } 4949 *ndip = ndi; 4950 } else 4951 error = EPERM; 4952 } 4953 if (nd->nd_repstat != 0) 4954 error = nd->nd_repstat; 4955nfsmout: 4956 if (error != 0 && ndi != NULL) 4957 nfscl_freedevinfo(ndi); 4958 mbuf_freem(nd->nd_mrep); 4959 return (error); 4960} 4961 4962/* 4963 * Do the NFSv4.1 LayoutCommit. 4964 */ 4965int 4966nfsrpc_layoutcommit(struct nfsmount *nmp, uint8_t *fh, int fhlen, int reclaim, 4967 uint64_t off, uint64_t len, uint64_t lastbyte, nfsv4stateid_t *stateidp, 4968 int layouttype, int layoutupdatecnt, uint8_t *layp, struct ucred *cred, 4969 NFSPROC_T *p, void *stuff) 4970{ 4971 uint32_t *tl; 4972 struct nfsrv_descript nfsd, *nd = &nfsd; 4973 int error, outcnt, i; 4974 uint8_t *cp; 4975 4976 nfscl_reqstart(nd, NFSPROC_LAYOUTCOMMIT, nmp, fh, fhlen, NULL, NULL); 4977 NFSM_BUILD(tl, uint32_t *, 5 * NFSX_UNSIGNED + 3 * NFSX_HYPER + 4978 NFSX_STATEID); 4979 txdr_hyper(off, tl); 4980 tl += 2; 4981 txdr_hyper(len, tl); 4982 tl += 2; 4983 if (reclaim != 0) 4984 *tl++ = newnfs_true; 4985 else 4986 *tl++ = newnfs_false; 4987 *tl++ = txdr_unsigned(stateidp->seqid); 4988 *tl++ = stateidp->other[0]; 4989 *tl++ = stateidp->other[1]; 4990 *tl++ = stateidp->other[2]; 4991 *tl++ = newnfs_true; 4992 if (lastbyte < off) 4993 lastbyte = off; 4994 else if (lastbyte >= (off + len)) 4995 lastbyte = off + len - 1; 4996 txdr_hyper(lastbyte, tl); 4997 tl += 2; 4998 *tl++ = newnfs_false; 4999 *tl++ = txdr_unsigned(layouttype); 5000 *tl = txdr_unsigned(layoutupdatecnt); 5001 if (layoutupdatecnt > 0) { 5002 KASSERT(layouttype != NFSLAYOUT_NFSV4_1_FILES, 5003 ("Must be nil for Files Layout")); 5004 outcnt = NFSM_RNDUP(layoutupdatecnt); 5005 NFSM_BUILD(cp, uint8_t *, outcnt); 5006 NFSBCOPY(layp, cp, layoutupdatecnt); 5007 cp += layoutupdatecnt; 5008 for (i = 0; i < (outcnt - layoutupdatecnt); i++) 5009 *cp++ = 0x0; 5010 } 5011 nd->nd_flag |= ND_USEGSSNAME; 5012 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 5013 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 5014 if (error != 0) 5015 return (error); 5016 error = nd->nd_repstat; 5017 mbuf_freem(nd->nd_mrep); 5018 return (error); 5019} 5020 5021/* 5022 * Do the NFSv4.1 LayoutReturn. 5023 */ 5024int 5025nfsrpc_layoutreturn(struct nfsmount *nmp, uint8_t *fh, int fhlen, int reclaim, 5026 int layouttype, uint32_t iomode, int layoutreturn, uint64_t offset, 5027 uint64_t len, nfsv4stateid_t *stateidp, int layoutcnt, uint32_t *layp, 5028 struct ucred *cred, NFSPROC_T *p, void *stuff) 5029{ 5030 uint32_t *tl; 5031 struct nfsrv_descript nfsd, *nd = &nfsd; 5032 int error, outcnt, i; 5033 uint8_t *cp; 5034 5035 nfscl_reqstart(nd, NFSPROC_LAYOUTRETURN, nmp, fh, fhlen, NULL, NULL); 5036 NFSM_BUILD(tl, uint32_t *, 4 * NFSX_UNSIGNED); 5037 if (reclaim != 0) 5038 *tl++ = newnfs_true; 5039 else 5040 *tl++ = newnfs_false; 5041 *tl++ = txdr_unsigned(layouttype); 5042 *tl++ = txdr_unsigned(iomode); 5043 *tl = txdr_unsigned(layoutreturn); 5044 if (layoutreturn == NFSLAYOUTRETURN_FILE) { 5045 NFSM_BUILD(tl, uint32_t *, 2 * NFSX_HYPER + NFSX_STATEID + 5046 NFSX_UNSIGNED); 5047 txdr_hyper(offset, tl); 5048 tl += 2; 5049 txdr_hyper(len, tl); 5050 tl += 2; 5051 NFSCL_DEBUG(4, "layoutret stseq=%d\n", (int)stateidp->seqid); 5052 *tl++ = txdr_unsigned(stateidp->seqid); 5053 *tl++ = stateidp->other[0]; 5054 *tl++ = stateidp->other[1]; 5055 *tl++ = stateidp->other[2]; 5056 *tl = txdr_unsigned(layoutcnt); 5057 if (layoutcnt > 0) { 5058 outcnt = NFSM_RNDUP(layoutcnt); 5059 NFSM_BUILD(cp, uint8_t *, outcnt); 5060 NFSBCOPY(layp, cp, layoutcnt); 5061 cp += layoutcnt; 5062 for (i = 0; i < (outcnt - layoutcnt); i++) 5063 *cp++ = 0x0; 5064 } 5065 } 5066 nd->nd_flag |= ND_USEGSSNAME; 5067 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 5068 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 5069 if (error != 0) 5070 return (error); 5071 if (nd->nd_repstat == 0) { 5072 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 5073 if (*tl != 0) { 5074 NFSM_DISSECT(tl, uint32_t *, NFSX_STATEID); 5075 stateidp->seqid = fxdr_unsigned(uint32_t, *tl++); 5076 stateidp->other[0] = *tl++; 5077 stateidp->other[1] = *tl++; 5078 stateidp->other[2] = *tl; 5079 } 5080 } else 5081 error = nd->nd_repstat; 5082nfsmout: 5083 mbuf_freem(nd->nd_mrep); 5084 return (error); 5085} 5086 5087/* 5088 * Acquire a layout and devinfo, if possible. The caller must have acquired 5089 * a reference count on the nfsclclient structure before calling this. 5090 * Return the layout in lypp with a reference count on it, if successful. 5091 */ 5092static int 5093nfsrpc_getlayout(struct nfsmount *nmp, vnode_t vp, struct nfsfh *nfhp, 5094 int iomode, uint32_t *notifybitsp, nfsv4stateid_t *stateidp, uint64_t off, 5095 struct nfscllayout **lypp, struct ucred *cred, NFSPROC_T *p) 5096{ 5097 struct nfscllayout *lyp; 5098 struct nfsclflayout *flp, *tflp; 5099 struct nfscldevinfo *dip; 5100 struct nfsclflayouthead flh; 5101 int error = 0, islocked, layoutlen, recalled, retonclose; 5102 nfsv4stateid_t stateid; 5103 5104 *lypp = NULL; 5105 /* 5106 * If lyp is returned non-NULL, there will be a refcnt (shared lock) 5107 * on it, iff flp != NULL or a lock (exclusive lock) on it iff 5108 * flp == NULL. 5109 */ 5110 lyp = nfscl_getlayout(nmp->nm_clp, nfhp->nfh_fh, nfhp->nfh_len, 5111 off, &flp, &recalled); 5112 islocked = 0; 5113 if (lyp == NULL || flp == NULL) { 5114 if (recalled != 0) 5115 return (EIO); 5116 LIST_INIT(&flh); 5117 layoutlen = NFSMNT_MDSSESSION(nmp)->nfsess_maxcache - 5118 (NFSX_STATEID + 3 * NFSX_UNSIGNED); 5119 if (lyp == NULL) { 5120 stateid.seqid = 0; 5121 stateid.other[0] = stateidp->other[0]; 5122 stateid.other[1] = stateidp->other[1]; 5123 stateid.other[2] = stateidp->other[2]; 5124 error = nfsrpc_layoutget(nmp, nfhp->nfh_fh, 5125 nfhp->nfh_len, iomode, (uint64_t)0, INT64_MAX, 5126 (uint64_t)0, layoutlen, &stateid, &retonclose, 5127 &flh, cred, p, NULL); 5128 } else { 5129 islocked = 1; 5130 stateid.seqid = lyp->nfsly_stateid.seqid; 5131 stateid.other[0] = lyp->nfsly_stateid.other[0]; 5132 stateid.other[1] = lyp->nfsly_stateid.other[1]; 5133 stateid.other[2] = lyp->nfsly_stateid.other[2]; 5134 error = nfsrpc_layoutget(nmp, nfhp->nfh_fh, 5135 nfhp->nfh_len, iomode, off, INT64_MAX, 5136 (uint64_t)0, layoutlen, &stateid, &retonclose, 5137 &flh, cred, p, NULL); 5138 } 5139 if (error == 0) 5140 LIST_FOREACH(tflp, &flh, nfsfl_list) { 5141 error = nfscl_adddevinfo(nmp, NULL, tflp); 5142 if (error != 0) { 5143 error = nfsrpc_getdeviceinfo(nmp, 5144 tflp->nfsfl_dev, 5145 NFSLAYOUT_NFSV4_1_FILES, 5146 notifybitsp, &dip, cred, p); 5147 if (error != 0) 5148 break; 5149 error = nfscl_adddevinfo(nmp, dip, 5150 tflp); 5151 if (error != 0) 5152 printf( 5153 "getlayout: cannot add\n"); 5154 } 5155 } 5156 if (error == 0) { 5157 /* 5158 * nfscl_layout() always returns with the nfsly_lock 5159 * set to a refcnt (shared lock). 5160 */ 5161 error = nfscl_layout(nmp, vp, nfhp->nfh_fh, 5162 nfhp->nfh_len, &stateid, retonclose, &flh, &lyp, 5163 cred, p); 5164 if (error == 0) 5165 *lypp = lyp; 5166 } else if (islocked != 0) 5167 nfsv4_unlock(&lyp->nfsly_lock, 0); 5168 } else 5169 *lypp = lyp; 5170 return (error); 5171} 5172 5173/* 5174 * Do a TCP connection plus exchange id and create session. 5175 * If successful, a "struct nfsclds" is linked into the list for the 5176 * mount point and a pointer to it is returned. 5177 */ 5178static int 5179nfsrpc_fillsa(struct nfsmount *nmp, struct sockaddr_storage *ssp, 5180 struct nfsclds **dspp, NFSPROC_T *p) 5181{ 5182 struct sockaddr_in *msad, *sad, *ssd; 5183 struct sockaddr_in6 *msad6, *sad6, *ssd6; 5184 struct nfsclclient *clp; 5185 struct nfssockreq *nrp; 5186 struct nfsclds *dsp, *tdsp; 5187 int error; 5188 enum nfsclds_state retv; 5189 uint32_t sequenceid; 5190 5191 KASSERT(nmp->nm_sockreq.nr_cred != NULL, 5192 ("nfsrpc_fillsa: NULL nr_cred")); 5193 NFSLOCKCLSTATE(); 5194 clp = nmp->nm_clp; 5195 NFSUNLOCKCLSTATE(); 5196 if (clp == NULL) 5197 return (EPERM); 5198 if (ssp->ss_family == AF_INET) { 5199 ssd = (struct sockaddr_in *)ssp; 5200 NFSLOCKMNT(nmp); 5201 5202 /* 5203 * Check to see if we already have a session for this 5204 * address that is usable for a DS. 5205 * Note that the MDS's address is in a different place 5206 * than the sessions already acquired for DS's. 5207 */ 5208 msad = (struct sockaddr_in *)nmp->nm_sockreq.nr_nam; 5209 tdsp = TAILQ_FIRST(&nmp->nm_sess); 5210 while (tdsp != NULL) { 5211 if (msad != NULL && msad->sin_family == AF_INET && 5212 ssd->sin_addr.s_addr == msad->sin_addr.s_addr && 5213 ssd->sin_port == msad->sin_port && 5214 (tdsp->nfsclds_flags & NFSCLDS_DS) != 0) { 5215 *dspp = tdsp; 5216 NFSUNLOCKMNT(nmp); 5217 NFSCL_DEBUG(4, "fnd same addr\n"); 5218 return (0); 5219 } 5220 tdsp = TAILQ_NEXT(tdsp, nfsclds_list); 5221 if (tdsp != NULL && tdsp->nfsclds_sockp != NULL) 5222 msad = (struct sockaddr_in *) 5223 tdsp->nfsclds_sockp->nr_nam; 5224 else 5225 msad = NULL; 5226 } 5227 NFSUNLOCKMNT(nmp); 5228 5229 /* No IP address match, so look for new/trunked one. */ 5230 sad = malloc(sizeof(*sad), M_SONAME, M_WAITOK | M_ZERO); 5231 sad->sin_len = sizeof(*sad); 5232 sad->sin_family = AF_INET; 5233 sad->sin_port = ssd->sin_port; 5234 sad->sin_addr.s_addr = ssd->sin_addr.s_addr; 5235 nrp = malloc(sizeof(*nrp), M_NFSSOCKREQ, M_WAITOK | M_ZERO); 5236 nrp->nr_nam = (struct sockaddr *)sad; 5237 } else if (ssp->ss_family == AF_INET6) { 5238 ssd6 = (struct sockaddr_in6 *)ssp; 5239 NFSLOCKMNT(nmp); 5240 5241 /* 5242 * Check to see if we already have a session for this 5243 * address that is usable for a DS. 5244 * Note that the MDS's address is in a different place 5245 * than the sessions already acquired for DS's. 5246 */ 5247 msad6 = (struct sockaddr_in6 *)nmp->nm_sockreq.nr_nam; 5248 tdsp = TAILQ_FIRST(&nmp->nm_sess); 5249 while (tdsp != NULL) { 5250 if (msad6 != NULL && msad6->sin6_family == AF_INET6 && 5251 IN6_ARE_ADDR_EQUAL(&ssd6->sin6_addr, 5252 &msad6->sin6_addr) && 5253 ssd6->sin6_port == msad6->sin6_port && 5254 (tdsp->nfsclds_flags & NFSCLDS_DS) != 0) { 5255 *dspp = tdsp; 5256 NFSUNLOCKMNT(nmp); 5257 return (0); 5258 } 5259 tdsp = TAILQ_NEXT(tdsp, nfsclds_list); 5260 if (tdsp != NULL && tdsp->nfsclds_sockp != NULL) 5261 msad6 = (struct sockaddr_in6 *) 5262 tdsp->nfsclds_sockp->nr_nam; 5263 else 5264 msad6 = NULL; 5265 } 5266 NFSUNLOCKMNT(nmp); 5267 5268 /* No IP address match, so look for new/trunked one. */ 5269 sad6 = malloc(sizeof(*sad6), M_SONAME, M_WAITOK | M_ZERO); 5270 sad6->sin6_len = sizeof(*sad6); 5271 sad6->sin6_family = AF_INET6; 5272 sad6->sin6_port = ssd6->sin6_port; 5273 NFSBCOPY(&ssd6->sin6_addr, &sad6->sin6_addr, 5274 sizeof(struct in6_addr)); 5275 nrp = malloc(sizeof(*nrp), M_NFSSOCKREQ, M_WAITOK | M_ZERO); 5276 nrp->nr_nam = (struct sockaddr *)sad6; 5277 } else 5278 return (EPERM); 5279 5280 nrp->nr_sotype = SOCK_STREAM; 5281 mtx_init(&nrp->nr_mtx, "nfssock", NULL, MTX_DEF); 5282 nrp->nr_prog = NFS_PROG; 5283 nrp->nr_vers = NFS_VER4; 5284 5285 /* 5286 * Use the credentials that were used for the mount, which are 5287 * in nmp->nm_sockreq.nr_cred for newnfs_connect() etc. 5288 * Ref. counting the credentials with crhold() is probably not 5289 * necessary, since nm_sockreq.nr_cred won't be crfree()'d until 5290 * unmount, but I did it anyhow. 5291 */ 5292 nrp->nr_cred = crhold(nmp->nm_sockreq.nr_cred); 5293 error = newnfs_connect(nmp, nrp, NULL, p, 0); 5294 NFSCL_DEBUG(3, "DS connect=%d\n", error); 5295 5296 /* Now, do the exchangeid and create session. */ 5297 if (error == 0) 5298 error = nfsrpc_exchangeid(nmp, clp, nrp, NFSV4EXCH_USEPNFSDS, 5299 &dsp, nrp->nr_cred, p); 5300 NFSCL_DEBUG(3, "DS exchangeid=%d\n", error); 5301 if (error == 0) { 5302 dsp->nfsclds_sockp = nrp; 5303 NFSLOCKMNT(nmp); 5304 retv = nfscl_getsameserver(nmp, dsp, &tdsp); 5305 NFSCL_DEBUG(3, "getsame ret=%d\n", retv); 5306 if (retv == NFSDSP_USETHISSESSION) { 5307 NFSUNLOCKMNT(nmp); 5308 /* 5309 * If there is already a session for this server, 5310 * use it. 5311 */ 5312 (void)newnfs_disconnect(nrp); 5313 nfscl_freenfsclds(dsp); 5314 *dspp = tdsp; 5315 return (0); 5316 } 5317 if (retv == NFSDSP_SEQTHISSESSION) 5318 sequenceid = tdsp->nfsclds_sess.nfsess_sequenceid; 5319 else 5320 sequenceid = dsp->nfsclds_sess.nfsess_sequenceid; 5321 NFSUNLOCKMNT(nmp); 5322 error = nfsrpc_createsession(nmp, &dsp->nfsclds_sess, 5323 nrp, sequenceid, 0, nrp->nr_cred, p); 5324 NFSCL_DEBUG(3, "DS createsess=%d\n", error); 5325 } else { 5326 NFSFREECRED(nrp->nr_cred); 5327 NFSFREEMUTEX(&nrp->nr_mtx); 5328 free(nrp->nr_nam, M_SONAME); 5329 free(nrp, M_NFSSOCKREQ); 5330 } 5331 if (error == 0) { 5332 NFSCL_DEBUG(3, "add DS session\n"); 5333 /* 5334 * Put it at the end of the list. That way the list 5335 * is ordered by when the entry was added. This matters 5336 * since the one done first is the one that should be 5337 * used for sequencid'ing any subsequent create sessions. 5338 */ 5339 NFSLOCKMNT(nmp); 5340 TAILQ_INSERT_TAIL(&nmp->nm_sess, dsp, nfsclds_list); 5341 NFSUNLOCKMNT(nmp); 5342 *dspp = dsp; 5343 } else if (dsp != NULL) 5344 nfscl_freenfsclds(dsp); 5345 return (error); 5346} 5347 5348/* 5349 * Do the NFSv4.1 Reclaim Complete. 5350 */ 5351int 5352nfsrpc_reclaimcomplete(struct nfsmount *nmp, struct ucred *cred, NFSPROC_T *p) 5353{ 5354 uint32_t *tl; 5355 struct nfsrv_descript nfsd; 5356 struct nfsrv_descript *nd = &nfsd; 5357 int error; 5358 5359 nfscl_reqstart(nd, NFSPROC_RECLAIMCOMPL, nmp, NULL, 0, NULL, NULL); 5360 NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED); 5361 *tl = newnfs_false; 5362 nd->nd_flag |= ND_USEGSSNAME; 5363 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 5364 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 5365 if (error != 0) 5366 return (error); 5367 error = nd->nd_repstat; 5368 mbuf_freem(nd->nd_mrep); 5369 return (error); 5370} 5371 5372/* 5373 * Initialize the slot tables for a session. 5374 */ 5375static void 5376nfscl_initsessionslots(struct nfsclsession *sep) 5377{ 5378 int i; 5379 5380 for (i = 0; i < NFSV4_CBSLOTS; i++) { 5381 if (sep->nfsess_cbslots[i].nfssl_reply != NULL) 5382 m_freem(sep->nfsess_cbslots[i].nfssl_reply); 5383 NFSBZERO(&sep->nfsess_cbslots[i], sizeof(struct nfsslot)); 5384 } 5385 for (i = 0; i < 64; i++) 5386 sep->nfsess_slotseq[i] = 0; 5387 sep->nfsess_slots = 0; 5388} 5389 5390/* 5391 * Called to try and do an I/O operation via an NFSv4.1 Data Server (DS). 5392 */ 5393int 5394nfscl_doiods(vnode_t vp, struct uio *uiop, int *iomode, int *must_commit, 5395 uint32_t rwaccess, struct ucred *cred, NFSPROC_T *p) 5396{ 5397 struct nfsnode *np = VTONFS(vp); 5398 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 5399 struct nfscllayout *layp; 5400 struct nfscldevinfo *dip; 5401 struct nfsclflayout *rflp; 5402 nfsv4stateid_t stateid; 5403 struct ucred *newcred; 5404 uint64_t lastbyte, len, off, oresid, xfer; 5405 int eof, error, iolaymode, recalled; 5406 void *lckp; 5407 5408 if (!NFSHASPNFS(nmp) || nfscl_enablecallb == 0 || nfs_numnfscbd == 0 || 5409 (np->n_flag & NNOLAYOUT) != 0) 5410 return (EIO); 5411 /* Now, get a reference cnt on the clientid for this mount. */ 5412 if (nfscl_getref(nmp) == 0) 5413 return (EIO); 5414 5415 /* Find an appropriate stateid. */ 5416 newcred = NFSNEWCRED(cred); 5417 error = nfscl_getstateid(vp, np->n_fhp->nfh_fh, np->n_fhp->nfh_len, 5418 rwaccess, 1, newcred, p, &stateid, &lckp); 5419 if (error != 0) { 5420 NFSFREECRED(newcred); 5421 nfscl_relref(nmp); 5422 return (error); 5423 } 5424 /* Search for a layout for this file. */ 5425 off = uiop->uio_offset; 5426 layp = nfscl_getlayout(nmp->nm_clp, np->n_fhp->nfh_fh, 5427 np->n_fhp->nfh_len, off, &rflp, &recalled); 5428 if (layp == NULL || rflp == NULL) { 5429 if (recalled != 0) { 5430 NFSFREECRED(newcred); 5431 nfscl_relref(nmp); 5432 return (EIO); 5433 } 5434 if (layp != NULL) { 5435 nfscl_rellayout(layp, (rflp == NULL) ? 1 : 0); 5436 layp = NULL; 5437 } 5438 /* Try and get a Layout, if it is supported. */ 5439 if (rwaccess == NFSV4OPEN_ACCESSWRITE || 5440 (np->n_flag & NWRITEOPENED) != 0) 5441 iolaymode = NFSLAYOUTIOMODE_RW; 5442 else 5443 iolaymode = NFSLAYOUTIOMODE_READ; 5444 error = nfsrpc_getlayout(nmp, vp, np->n_fhp, iolaymode, 5445 NULL, &stateid, off, &layp, newcred, p); 5446 if (error != 0) { 5447 NFSLOCKNODE(np); 5448 np->n_flag |= NNOLAYOUT; 5449 NFSUNLOCKNODE(np); 5450 if (lckp != NULL) 5451 nfscl_lockderef(lckp); 5452 NFSFREECRED(newcred); 5453 if (layp != NULL) 5454 nfscl_rellayout(layp, 0); 5455 nfscl_relref(nmp); 5456 return (error); 5457 } 5458 } 5459 5460 /* 5461 * Loop around finding a layout that works for the first part of 5462 * this I/O operation, and then call the function that actually 5463 * does the RPC. 5464 */ 5465 eof = 0; 5466 len = (uint64_t)uiop->uio_resid; 5467 while (len > 0 && error == 0 && eof == 0) { 5468 off = uiop->uio_offset; 5469 error = nfscl_findlayoutforio(layp, off, rwaccess, &rflp); 5470 if (error == 0) { 5471 oresid = xfer = (uint64_t)uiop->uio_resid; 5472 if (xfer > (rflp->nfsfl_end - rflp->nfsfl_off)) 5473 xfer = rflp->nfsfl_end - rflp->nfsfl_off; 5474 dip = nfscl_getdevinfo(nmp->nm_clp, rflp->nfsfl_dev, 5475 rflp->nfsfl_devp); 5476 if (dip != NULL) { 5477 error = nfscl_doflayoutio(vp, uiop, iomode, 5478 must_commit, &eof, &stateid, rwaccess, dip, 5479 layp, rflp, off, xfer, newcred, p); 5480 nfscl_reldevinfo(dip); 5481 lastbyte = off + xfer - 1; 5482 if (error == 0) { 5483 NFSLOCKCLSTATE(); 5484 if (lastbyte > layp->nfsly_lastbyte) 5485 layp->nfsly_lastbyte = lastbyte; 5486 NFSUNLOCKCLSTATE(); 5487 } 5488 } else 5489 error = EIO; 5490 if (error == 0) 5491 len -= (oresid - (uint64_t)uiop->uio_resid); 5492 } 5493 } 5494 if (lckp != NULL) 5495 nfscl_lockderef(lckp); 5496 NFSFREECRED(newcred); 5497 nfscl_rellayout(layp, 0); 5498 nfscl_relref(nmp); 5499 return (error); 5500} 5501 5502/* 5503 * Find a file layout that will handle the first bytes of the requested 5504 * range and return the information from it needed to to the I/O operation. 5505 */ 5506int 5507nfscl_findlayoutforio(struct nfscllayout *lyp, uint64_t off, uint32_t rwaccess, 5508 struct nfsclflayout **retflpp) 5509{ 5510 struct nfsclflayout *flp, *nflp, *rflp; 5511 uint32_t rw; 5512 5513 rflp = NULL; 5514 rw = rwaccess; 5515 /* For reading, do the Read list first and then the Write list. */ 5516 do { 5517 if (rw == NFSV4OPEN_ACCESSREAD) 5518 flp = LIST_FIRST(&lyp->nfsly_flayread); 5519 else 5520 flp = LIST_FIRST(&lyp->nfsly_flayrw); 5521 while (flp != NULL) { 5522 nflp = LIST_NEXT(flp, nfsfl_list); 5523 if (flp->nfsfl_off > off) 5524 break; 5525 if (flp->nfsfl_end > off && 5526 (rflp == NULL || rflp->nfsfl_end < flp->nfsfl_end)) 5527 rflp = flp; 5528 flp = nflp; 5529 } 5530 if (rw == NFSV4OPEN_ACCESSREAD) 5531 rw = NFSV4OPEN_ACCESSWRITE; 5532 else 5533 rw = 0; 5534 } while (rw != 0); 5535 if (rflp != NULL) { 5536 /* This one covers the most bytes starting at off. */ 5537 *retflpp = rflp; 5538 return (0); 5539 } 5540 return (EIO); 5541} 5542 5543/* 5544 * Do I/O using an NFSv4.1 file layout. 5545 */ 5546static int 5547nfscl_doflayoutio(vnode_t vp, struct uio *uiop, int *iomode, int *must_commit, 5548 int *eofp, nfsv4stateid_t *stateidp, int rwflag, struct nfscldevinfo *dp, 5549 struct nfscllayout *lyp, struct nfsclflayout *flp, uint64_t off, 5550 uint64_t len, struct ucred *cred, NFSPROC_T *p) 5551{ 5552 uint64_t io_off, rel_off, stripe_unit_size, transfer, xfer; 5553 int commit_thru_mds, error = 0, stripe_index, stripe_pos; 5554 struct nfsnode *np; 5555 struct nfsfh *fhp; 5556 struct nfsclds **dspp; 5557 5558 np = VTONFS(vp); 5559 rel_off = off - flp->nfsfl_patoff; 5560 stripe_unit_size = (flp->nfsfl_util >> 6) & 0x3ffffff; 5561 stripe_pos = (rel_off / stripe_unit_size + flp->nfsfl_stripe1) % 5562 dp->nfsdi_stripecnt; 5563 transfer = stripe_unit_size - (rel_off % stripe_unit_size); 5564 5565 /* Loop around, doing I/O for each stripe unit. */ 5566 while (len > 0 && error == 0) { 5567 stripe_index = nfsfldi_stripeindex(dp, stripe_pos); 5568 dspp = nfsfldi_addr(dp, stripe_index); 5569 if (len > transfer) 5570 xfer = transfer; 5571 else 5572 xfer = len; 5573 if ((flp->nfsfl_util & NFSFLAYUTIL_DENSE) != 0) { 5574 /* Dense layout. */ 5575 if (stripe_pos >= flp->nfsfl_fhcnt) 5576 return (EIO); 5577 fhp = flp->nfsfl_fh[stripe_pos]; 5578 io_off = (rel_off / (stripe_unit_size * 5579 dp->nfsdi_stripecnt)) * stripe_unit_size + 5580 rel_off % stripe_unit_size; 5581 } else { 5582 /* Sparse layout. */ 5583 if (flp->nfsfl_fhcnt > 1) { 5584 if (stripe_index >= flp->nfsfl_fhcnt) 5585 return (EIO); 5586 fhp = flp->nfsfl_fh[stripe_index]; 5587 } else if (flp->nfsfl_fhcnt == 1) 5588 fhp = flp->nfsfl_fh[0]; 5589 else 5590 fhp = np->n_fhp; 5591 io_off = off; 5592 } 5593 if ((flp->nfsfl_util & NFSFLAYUTIL_COMMIT_THRU_MDS) != 0) 5594 commit_thru_mds = 1; 5595 else 5596 commit_thru_mds = 0; 5597 if (rwflag == FREAD) 5598 error = nfsrpc_readds(vp, uiop, stateidp, eofp, *dspp, 5599 io_off, xfer, fhp, cred, p); 5600 else { 5601 error = nfsrpc_writeds(vp, uiop, iomode, must_commit, 5602 stateidp, *dspp, io_off, xfer, fhp, commit_thru_mds, 5603 cred, p); 5604 if (error == 0) { 5605 NFSLOCKCLSTATE(); 5606 lyp->nfsly_flags |= NFSLY_WRITTEN; 5607 NFSUNLOCKCLSTATE(); 5608 } 5609 } 5610 if (error == 0) { 5611 transfer = stripe_unit_size; 5612 stripe_pos = (stripe_pos + 1) % dp->nfsdi_stripecnt; 5613 len -= xfer; 5614 off += xfer; 5615 } 5616 } 5617 return (error); 5618} 5619 5620/* 5621 * The actual read RPC done to a DS. 5622 */ 5623static int 5624nfsrpc_readds(vnode_t vp, struct uio *uiop, nfsv4stateid_t *stateidp, int *eofp, 5625 struct nfsclds *dsp, uint64_t io_off, int len, struct nfsfh *fhp, 5626 struct ucred *cred, NFSPROC_T *p) 5627{ 5628 uint32_t *tl; 5629 int error, retlen; 5630 struct nfsrv_descript nfsd; 5631 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 5632 struct nfsrv_descript *nd = &nfsd; 5633 struct nfssockreq *nrp; 5634 5635 nd->nd_mrep = NULL; 5636 nfscl_reqstart(nd, NFSPROC_READDS, nmp, fhp->nfh_fh, fhp->nfh_len, 5637 NULL, &dsp->nfsclds_sess); 5638 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSEQIDZERO); 5639 NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED * 3); 5640 txdr_hyper(io_off, tl); 5641 *(tl + 2) = txdr_unsigned(len); 5642 nrp = dsp->nfsclds_sockp; 5643 if (nrp == NULL) 5644 /* If NULL, use the MDS socket. */ 5645 nrp = &nmp->nm_sockreq; 5646 error = newnfs_request(nd, nmp, NULL, nrp, vp, p, cred, 5647 NFS_PROG, NFS_VER4, NULL, 1, NULL, &dsp->nfsclds_sess); 5648 if (error != 0) 5649 return (error); 5650 if (nd->nd_repstat != 0) { 5651 error = nd->nd_repstat; 5652 goto nfsmout; 5653 } 5654 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 5655 *eofp = fxdr_unsigned(int, *tl); 5656 NFSM_STRSIZ(retlen, len); 5657 error = nfsm_mbufuio(nd, uiop, retlen); 5658nfsmout: 5659 if (nd->nd_mrep != NULL) 5660 mbuf_freem(nd->nd_mrep); 5661 return (error); 5662} 5663 5664/* 5665 * The actual write RPC done to a DS. 5666 */ 5667static int 5668nfsrpc_writeds(vnode_t vp, struct uio *uiop, int *iomode, int *must_commit, 5669 nfsv4stateid_t *stateidp, struct nfsclds *dsp, uint64_t io_off, int len, 5670 struct nfsfh *fhp, int commit_thru_mds, struct ucred *cred, NFSPROC_T *p) 5671{ 5672 uint32_t *tl; 5673 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 5674 int error, rlen, commit, committed = NFSWRITE_FILESYNC; 5675 int32_t backup; 5676 struct nfsrv_descript nfsd; 5677 struct nfsrv_descript *nd = &nfsd; 5678 struct nfssockreq *nrp; 5679 5680 KASSERT(uiop->uio_iovcnt == 1, ("nfs: writerpc iovcnt > 1")); 5681 nd->nd_mrep = NULL; 5682 nfscl_reqstart(nd, NFSPROC_WRITEDS, nmp, fhp->nfh_fh, fhp->nfh_len, 5683 NULL, &dsp->nfsclds_sess); 5684 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSEQIDZERO); 5685 NFSM_BUILD(tl, uint32_t *, NFSX_HYPER + 2 * NFSX_UNSIGNED); 5686 txdr_hyper(io_off, tl); 5687 tl += 2; 5688 *tl++ = txdr_unsigned(*iomode); 5689 *tl = txdr_unsigned(len); 5690 nfsm_uiombuf(nd, uiop, len); 5691 nrp = dsp->nfsclds_sockp; 5692 if (nrp == NULL) 5693 /* If NULL, use the MDS socket. */ 5694 nrp = &nmp->nm_sockreq; 5695 error = newnfs_request(nd, nmp, NULL, nrp, vp, p, cred, 5696 NFS_PROG, NFS_VER4, NULL, 1, NULL, &dsp->nfsclds_sess); 5697 if (error != 0) 5698 return (error); 5699 if (nd->nd_repstat != 0) { 5700 /* 5701 * In case the rpc gets retried, roll 5702 * the uio fileds changed by nfsm_uiombuf() 5703 * back. 5704 */ 5705 uiop->uio_offset -= len; 5706 uio_uio_resid_add(uiop, len); 5707 uio_iov_base_add(uiop, -len); 5708 uio_iov_len_add(uiop, len); 5709 error = nd->nd_repstat; 5710 } else { 5711 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED + NFSX_VERF); 5712 rlen = fxdr_unsigned(int, *tl++); 5713 if (rlen == 0) { 5714 error = NFSERR_IO; 5715 goto nfsmout; 5716 } else if (rlen < len) { 5717 backup = len - rlen; 5718 uio_iov_base_add(uiop, -(backup)); 5719 uio_iov_len_add(uiop, backup); 5720 uiop->uio_offset -= backup; 5721 uio_uio_resid_add(uiop, backup); 5722 len = rlen; 5723 } 5724 commit = fxdr_unsigned(int, *tl++); 5725 5726 /* 5727 * Return the lowest committment level 5728 * obtained by any of the RPCs. 5729 */ 5730 if (committed == NFSWRITE_FILESYNC) 5731 committed = commit; 5732 else if (committed == NFSWRITE_DATASYNC && 5733 commit == NFSWRITE_UNSTABLE) 5734 committed = commit; 5735 if (commit_thru_mds != 0) { 5736 NFSLOCKMNT(nmp); 5737 if (!NFSHASWRITEVERF(nmp)) { 5738 NFSBCOPY(tl, nmp->nm_verf, NFSX_VERF); 5739 NFSSETWRITEVERF(nmp); 5740 } else if (NFSBCMP(tl, nmp->nm_verf, NFSX_VERF)) { 5741 *must_commit = 1; 5742 NFSBCOPY(tl, nmp->nm_verf, NFSX_VERF); 5743 } 5744 NFSUNLOCKMNT(nmp); 5745 } else { 5746 NFSLOCKDS(dsp); 5747 if ((dsp->nfsclds_flags & NFSCLDS_HASWRITEVERF) == 0) { 5748 NFSBCOPY(tl, dsp->nfsclds_verf, NFSX_VERF); 5749 dsp->nfsclds_flags |= NFSCLDS_HASWRITEVERF; 5750 } else if (NFSBCMP(tl, dsp->nfsclds_verf, NFSX_VERF)) { 5751 *must_commit = 1; 5752 NFSBCOPY(tl, dsp->nfsclds_verf, NFSX_VERF); 5753 } 5754 NFSUNLOCKDS(dsp); 5755 } 5756 } 5757nfsmout: 5758 if (nd->nd_mrep != NULL) 5759 mbuf_freem(nd->nd_mrep); 5760 *iomode = committed; 5761 if (nd->nd_repstat != 0 && error == 0) 5762 error = nd->nd_repstat; 5763 return (error); 5764} 5765 5766/* 5767 * Free up the nfsclds structure. 5768 */ 5769void 5770nfscl_freenfsclds(struct nfsclds *dsp) 5771{ 5772 int i; 5773 5774 if (dsp == NULL) 5775 return; 5776 if (dsp->nfsclds_sockp != NULL) { 5777 NFSFREECRED(dsp->nfsclds_sockp->nr_cred); 5778 NFSFREEMUTEX(&dsp->nfsclds_sockp->nr_mtx); 5779 free(dsp->nfsclds_sockp->nr_nam, M_SONAME); 5780 free(dsp->nfsclds_sockp, M_NFSSOCKREQ); 5781 } 5782 NFSFREEMUTEX(&dsp->nfsclds_mtx); 5783 NFSFREEMUTEX(&dsp->nfsclds_sess.nfsess_mtx); 5784 for (i = 0; i < NFSV4_CBSLOTS; i++) { 5785 if (dsp->nfsclds_sess.nfsess_cbslots[i].nfssl_reply != NULL) 5786 m_freem( 5787 dsp->nfsclds_sess.nfsess_cbslots[i].nfssl_reply); 5788 } 5789 free(dsp, M_NFSCLDS); 5790} 5791 5792static enum nfsclds_state 5793nfscl_getsameserver(struct nfsmount *nmp, struct nfsclds *newdsp, 5794 struct nfsclds **retdspp) 5795{ 5796 struct nfsclds *dsp, *cur_dsp; 5797 5798 /* 5799 * Search the list of nfsclds structures for one with the same 5800 * server. 5801 */ 5802 cur_dsp = NULL; 5803 TAILQ_FOREACH(dsp, &nmp->nm_sess, nfsclds_list) { 5804 if (dsp->nfsclds_servownlen == newdsp->nfsclds_servownlen && 5805 dsp->nfsclds_servownlen != 0 && 5806 !NFSBCMP(dsp->nfsclds_serverown, newdsp->nfsclds_serverown, 5807 dsp->nfsclds_servownlen)) { 5808 NFSCL_DEBUG(4, "fnd same fdsp=%p dsp=%p flg=0x%x\n", 5809 TAILQ_FIRST(&nmp->nm_sess), dsp, 5810 dsp->nfsclds_flags); 5811 /* Server major id matches. */ 5812 if ((dsp->nfsclds_flags & NFSCLDS_DS) != 0) { 5813 *retdspp = dsp; 5814 return (NFSDSP_USETHISSESSION); 5815 } 5816 5817 /* 5818 * Note the first match, so it can be used for 5819 * sequence'ing new sessions. 5820 */ 5821 if (cur_dsp == NULL) 5822 cur_dsp = dsp; 5823 } 5824 } 5825 if (cur_dsp != NULL) { 5826 *retdspp = cur_dsp; 5827 return (NFSDSP_SEQTHISSESSION); 5828 } 5829 return (NFSDSP_NOTFOUND); 5830} 5831 5832#ifdef notyet 5833/* 5834 * NFS commit rpc to a DS. 5835 */ 5836static int 5837nfsrpc_commitds(vnode_t vp, uint64_t offset, int cnt, struct nfsclds *dsp, 5838 struct nfsfh *fhp, struct ucred *cred, NFSPROC_T *p, void *stuff) 5839{ 5840 uint32_t *tl; 5841 struct nfsrv_descript nfsd, *nd = &nfsd; 5842 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 5843 struct nfssockreq *nrp; 5844 int error; 5845 5846 nfscl_reqstart(nd, NFSPROC_COMMITDS, nmp, fhp->nfh_fh, fhp->nfh_len, 5847 NULL, &dsp->nfsclds_sess); 5848 NFSM_BUILD(tl, uint32_t *, NFSX_HYPER + NFSX_UNSIGNED); 5849 txdr_hyper(offset, tl); 5850 tl += 2; 5851 *tl = txdr_unsigned(cnt); 5852 nrp = dsp->nfsclds_sockp; 5853 if (nrp == NULL) 5854 /* If NULL, use the MDS socket. */ 5855 nrp = &nmp->nm_sockreq; 5856 error = newnfs_request(nd, nmp, NULL, nrp, vp, p, cred, 5857 NFS_PROG, NFS_VER4, NULL, 1, NULL, &dsp->nfsclds_sess); 5858 if (error) 5859 return (error); 5860 if (nd->nd_repstat == 0) { 5861 NFSM_DISSECT(tl, u_int32_t *, NFSX_VERF); 5862 NFSLOCKDS(dsp); 5863 if (NFSBCMP(tl, dsp->nfsclds_verf, NFSX_VERF)) { 5864 NFSBCOPY(tl, dsp->nfsclds_verf, NFSX_VERF); 5865 error = NFSERR_STALEWRITEVERF; 5866 } 5867 NFSUNLOCKDS(dsp); 5868 } 5869nfsmout: 5870 if (error == 0 && nd->nd_repstat != 0) 5871 error = nd->nd_repstat; 5872 mbuf_freem(nd->nd_mrep); 5873 return (error); 5874} 5875#endif 5876 5877