1 /*- 2 * SPDX-License-Identifier: BSD-3-Clause 3 * 4 * Copyright (c) 1989, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * Rick Macklem at The University of Guelph. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 * 34 */ 35 36 #include <sys/cdefs.h> 37 __FBSDID("$FreeBSD$"); 38 39 /* 40 * Rpc op calls, generally called from the vnode op calls or through the 41 * buffer cache, for NFS v2, 3 and 4. 42 * These do not normally make any changes to vnode arguments or use 43 * structures that might change between the VFS variants. The returned 44 * arguments are all at the end, after the NFSPROC_T *p one. 45 */ 46 47 #ifndef APPLEKEXT 48 #include "opt_inet6.h" 49 50 #include <fs/nfs/nfsport.h> 51 #include <sys/sysctl.h> 52 #include <sys/taskqueue.h> 53 54 SYSCTL_DECL(_vfs_nfs); 55 56 static int nfsignore_eexist = 0; 57 SYSCTL_INT(_vfs_nfs, OID_AUTO, ignore_eexist, CTLFLAG_RW, 58 &nfsignore_eexist, 0, "NFS ignore EEXIST replies for mkdir/symlink"); 59 60 /* 61 * Global variables 62 */ 63 extern int nfs_numnfscbd; 64 extern struct timeval nfsboottime; 65 extern u_int32_t newnfs_false, newnfs_true; 66 extern nfstype nfsv34_type[9]; 67 extern int nfsrv_useacl; 68 extern char nfsv4_callbackaddr[INET6_ADDRSTRLEN]; 69 extern int nfscl_debuglevel; 70 extern int nfs_pnfsiothreads; 71 NFSCLSTATEMUTEX; 72 int nfstest_outofseq = 0; 73 int nfscl_assumeposixlocks = 1; 74 int nfscl_enablecallb = 0; 75 short nfsv4_cbport = NFSV4_CBPORT; 76 int nfstest_openallsetattr = 0; 77 #endif /* !APPLEKEXT */ 78 79 #define DIRHDSIZ offsetof(struct dirent, d_name) 80 81 /* 82 * nfscl_getsameserver() can return one of three values: 83 * NFSDSP_USETHISSESSION - Use this session for the DS. 84 * NFSDSP_SEQTHISSESSION - Use the nfsclds_sequence field of this dsp for new 85 * session. 86 * NFSDSP_NOTFOUND - No matching server was found. 87 */ 88 enum nfsclds_state { 89 NFSDSP_USETHISSESSION = 0, 90 NFSDSP_SEQTHISSESSION = 1, 91 NFSDSP_NOTFOUND = 2, 92 }; 93 94 /* 95 * Do a write RPC on a DS data file, using this structure for the arguments, 96 * so that this function can be executed by a separate kernel process. 97 */ 98 struct nfsclwritedsdorpc { 99 int done; 100 int inprog; 101 struct task tsk; 102 struct vnode *vp; 103 int iomode; 104 int must_commit; 105 nfsv4stateid_t *stateidp; 106 struct nfsclds *dsp; 107 uint64_t off; 108 int len; 109 struct nfsfh *fhp; 110 struct mbuf *m; 111 int vers; 112 int minorvers; 113 struct ucred *cred; 114 NFSPROC_T *p; 115 int err; 116 }; 117 118 static int nfsrpc_setattrrpc(vnode_t , struct vattr *, nfsv4stateid_t *, 119 struct ucred *, NFSPROC_T *, struct nfsvattr *, int *, void *); 120 static int nfsrpc_readrpc(vnode_t , struct uio *, struct ucred *, 121 nfsv4stateid_t *, NFSPROC_T *, struct nfsvattr *, int *, void *); 122 static int nfsrpc_writerpc(vnode_t , struct uio *, int *, int *, 123 struct ucred *, nfsv4stateid_t *, NFSPROC_T *, struct nfsvattr *, int *, 124 void *); 125 static int nfsrpc_createv23(vnode_t , char *, int, struct vattr *, 126 nfsquad_t, int, struct ucred *, NFSPROC_T *, struct nfsvattr *, 127 struct nfsvattr *, struct nfsfh **, int *, int *, void *); 128 static int nfsrpc_createv4(vnode_t , char *, int, struct vattr *, 129 nfsquad_t, int, struct nfsclowner *, struct nfscldeleg **, struct ucred *, 130 NFSPROC_T *, struct nfsvattr *, struct nfsvattr *, struct nfsfh **, int *, 131 int *, void *, int *); 132 static int nfsrpc_locku(struct nfsrv_descript *, struct nfsmount *, 133 struct nfscllockowner *, u_int64_t, u_int64_t, 134 u_int32_t, struct ucred *, NFSPROC_T *, int); 135 static int nfsrpc_setaclrpc(vnode_t, struct ucred *, NFSPROC_T *, 136 struct acl *, nfsv4stateid_t *, void *); 137 static int nfsrpc_getlayout(struct nfsmount *, vnode_t, struct nfsfh *, int, 138 uint32_t *, nfsv4stateid_t *, uint64_t, struct nfscllayout **, 139 struct ucred *, NFSPROC_T *); 140 static int nfsrpc_fillsa(struct nfsmount *, struct sockaddr_in *, 141 struct sockaddr_in6 *, sa_family_t, int, struct nfsclds **, NFSPROC_T *); 142 static void nfscl_initsessionslots(struct nfsclsession *); 143 static int nfscl_doflayoutio(vnode_t, struct uio *, int *, int *, int *, 144 nfsv4stateid_t *, int, struct nfscldevinfo *, struct nfscllayout *, 145 struct nfsclflayout *, uint64_t, uint64_t, int, struct ucred *, 146 NFSPROC_T *); 147 static int nfscl_dofflayoutio(vnode_t, struct uio *, int *, int *, int *, 148 nfsv4stateid_t *, int, struct nfscldevinfo *, struct nfscllayout *, 149 struct nfsclflayout *, uint64_t, uint64_t, int, int, struct mbuf *, 150 struct nfsclwritedsdorpc *, struct ucred *, NFSPROC_T *); 151 static struct mbuf *nfsm_copym(struct mbuf *, int, int); 152 static int nfsrpc_readds(vnode_t, struct uio *, nfsv4stateid_t *, int *, 153 struct nfsclds *, uint64_t, int, struct nfsfh *, int, int, int, 154 struct ucred *, NFSPROC_T *); 155 static int nfsrpc_writeds(vnode_t, struct uio *, int *, int *, 156 nfsv4stateid_t *, struct nfsclds *, uint64_t, int, 157 struct nfsfh *, int, int, int, int, struct ucred *, NFSPROC_T *); 158 static int nfsio_writedsmir(vnode_t, int *, int *, nfsv4stateid_t *, 159 struct nfsclds *, uint64_t, int, struct nfsfh *, struct mbuf *, int, int, 160 struct nfsclwritedsdorpc *, struct ucred *, NFSPROC_T *); 161 static int nfsrpc_writedsmir(vnode_t, int *, int *, nfsv4stateid_t *, 162 struct nfsclds *, uint64_t, int, struct nfsfh *, struct mbuf *, int, int, 163 struct ucred *, NFSPROC_T *); 164 static enum nfsclds_state nfscl_getsameserver(struct nfsmount *, 165 struct nfsclds *, struct nfsclds **); 166 static int nfsio_commitds(vnode_t, uint64_t, int, struct nfsclds *, 167 struct nfsfh *, int, int, struct nfsclwritedsdorpc *, struct ucred *, 168 NFSPROC_T *); 169 static int nfsrpc_commitds(vnode_t, uint64_t, int, struct nfsclds *, 170 struct nfsfh *, int, int, struct ucred *, NFSPROC_T *); 171 static void nfsrv_setuplayoutget(struct nfsrv_descript *, int, uint64_t, 172 uint64_t, uint64_t, nfsv4stateid_t *, int, int, int); 173 static int nfsrv_parseug(struct nfsrv_descript *, int, uid_t *, gid_t *, 174 NFSPROC_T *); 175 static int nfsrv_parselayoutget(struct nfsrv_descript *, nfsv4stateid_t *, 176 int *, struct nfsclflayouthead *); 177 static int nfsrpc_getopenlayout(struct nfsmount *, vnode_t, u_int8_t *, 178 int, uint8_t *, int, uint32_t, struct nfsclopen *, uint8_t *, int, 179 struct nfscldeleg **, struct ucred *, NFSPROC_T *); 180 static int nfsrpc_getcreatelayout(vnode_t, char *, int, struct vattr *, 181 nfsquad_t, int, struct nfsclowner *, struct nfscldeleg **, 182 struct ucred *, NFSPROC_T *, struct nfsvattr *, struct nfsvattr *, 183 struct nfsfh **, int *, int *, void *, int *); 184 static int nfsrpc_openlayoutrpc(struct nfsmount *, vnode_t, u_int8_t *, 185 int, uint8_t *, int, uint32_t, struct nfsclopen *, uint8_t *, int, 186 struct nfscldeleg **, nfsv4stateid_t *, int, int, int, int *, 187 struct nfsclflayouthead *, int *, struct ucred *, NFSPROC_T *); 188 static int nfsrpc_createlayout(vnode_t, char *, int, struct vattr *, 189 nfsquad_t, int, struct nfsclowner *, struct nfscldeleg **, 190 struct ucred *, NFSPROC_T *, struct nfsvattr *, struct nfsvattr *, 191 struct nfsfh **, int *, int *, void *, int *, nfsv4stateid_t *, 192 int, int, int, int *, struct nfsclflayouthead *, int *); 193 static int nfsrpc_layoutget(struct nfsmount *, uint8_t *, int, int, uint64_t, 194 uint64_t, uint64_t, int, int, nfsv4stateid_t *, int *, 195 struct nfsclflayouthead *, struct ucred *, NFSPROC_T *, void *); 196 static int nfsrpc_layoutgetres(struct nfsmount *, vnode_t, uint8_t *, 197 int, nfsv4stateid_t *, int, uint32_t *, struct nfscllayout **, 198 struct nfsclflayouthead *, int, int, int *, struct ucred *, NFSPROC_T *); 199 200 int nfs_pnfsio(task_fn_t *, void *); 201 202 /* 203 * nfs null call from vfs. 204 */ 205 APPLESTATIC int 206 nfsrpc_null(vnode_t vp, struct ucred *cred, NFSPROC_T *p) 207 { 208 int error; 209 struct nfsrv_descript nfsd, *nd = &nfsd; 210 211 NFSCL_REQSTART(nd, NFSPROC_NULL, vp); 212 error = nfscl_request(nd, vp, p, cred, NULL); 213 if (nd->nd_repstat && !error) 214 error = nd->nd_repstat; 215 mbuf_freem(nd->nd_mrep); 216 return (error); 217 } 218 219 /* 220 * nfs access rpc op. 221 * For nfs version 3 and 4, use the access rpc to check accessibility. If file 222 * modes are changed on the server, accesses might still fail later. 223 */ 224 APPLESTATIC int 225 nfsrpc_access(vnode_t vp, int acmode, struct ucred *cred, 226 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp) 227 { 228 int error; 229 u_int32_t mode, rmode; 230 231 if (acmode & VREAD) 232 mode = NFSACCESS_READ; 233 else 234 mode = 0; 235 if (vnode_vtype(vp) == VDIR) { 236 if (acmode & VWRITE) 237 mode |= (NFSACCESS_MODIFY | NFSACCESS_EXTEND | 238 NFSACCESS_DELETE); 239 if (acmode & VEXEC) 240 mode |= NFSACCESS_LOOKUP; 241 } else { 242 if (acmode & VWRITE) 243 mode |= (NFSACCESS_MODIFY | NFSACCESS_EXTEND); 244 if (acmode & VEXEC) 245 mode |= NFSACCESS_EXECUTE; 246 } 247 248 /* 249 * Now, just call nfsrpc_accessrpc() to do the actual RPC. 250 */ 251 error = nfsrpc_accessrpc(vp, mode, cred, p, nap, attrflagp, &rmode, 252 NULL); 253 254 /* 255 * The NFS V3 spec does not clarify whether or not 256 * the returned access bits can be a superset of 257 * the ones requested, so... 258 */ 259 if (!error && (rmode & mode) != mode) 260 error = EACCES; 261 return (error); 262 } 263 264 /* 265 * The actual rpc, separated out for Darwin. 266 */ 267 APPLESTATIC int 268 nfsrpc_accessrpc(vnode_t vp, u_int32_t mode, struct ucred *cred, 269 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, u_int32_t *rmodep, 270 void *stuff) 271 { 272 u_int32_t *tl; 273 u_int32_t supported, rmode; 274 int error; 275 struct nfsrv_descript nfsd, *nd = &nfsd; 276 nfsattrbit_t attrbits; 277 278 *attrflagp = 0; 279 supported = mode; 280 NFSCL_REQSTART(nd, NFSPROC_ACCESS, vp); 281 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 282 *tl = txdr_unsigned(mode); 283 if (nd->nd_flag & ND_NFSV4) { 284 /* 285 * And do a Getattr op. 286 */ 287 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 288 *tl = txdr_unsigned(NFSV4OP_GETATTR); 289 NFSGETATTR_ATTRBIT(&attrbits); 290 (void) nfsrv_putattrbit(nd, &attrbits); 291 } 292 error = nfscl_request(nd, vp, p, cred, stuff); 293 if (error) 294 return (error); 295 if (nd->nd_flag & ND_NFSV3) { 296 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 297 if (error) 298 goto nfsmout; 299 } 300 if (!nd->nd_repstat) { 301 if (nd->nd_flag & ND_NFSV4) { 302 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 303 supported = fxdr_unsigned(u_int32_t, *tl++); 304 } else { 305 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 306 } 307 rmode = fxdr_unsigned(u_int32_t, *tl); 308 if (nd->nd_flag & ND_NFSV4) 309 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 310 311 /* 312 * It's not obvious what should be done about 313 * unsupported access modes. For now, be paranoid 314 * and clear the unsupported ones. 315 */ 316 rmode &= supported; 317 *rmodep = rmode; 318 } else 319 error = nd->nd_repstat; 320 nfsmout: 321 mbuf_freem(nd->nd_mrep); 322 return (error); 323 } 324 325 /* 326 * nfs open rpc 327 */ 328 APPLESTATIC int 329 nfsrpc_open(vnode_t vp, int amode, struct ucred *cred, NFSPROC_T *p) 330 { 331 struct nfsclopen *op; 332 struct nfscldeleg *dp; 333 struct nfsfh *nfhp; 334 struct nfsnode *np = VTONFS(vp); 335 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 336 u_int32_t mode, clidrev; 337 int ret, newone, error, expireret = 0, retrycnt; 338 339 /* 340 * For NFSv4, Open Ops are only done on Regular Files. 341 */ 342 if (vnode_vtype(vp) != VREG) 343 return (0); 344 mode = 0; 345 if (amode & FREAD) 346 mode |= NFSV4OPEN_ACCESSREAD; 347 if (amode & FWRITE) 348 mode |= NFSV4OPEN_ACCESSWRITE; 349 nfhp = np->n_fhp; 350 351 retrycnt = 0; 352 #ifdef notdef 353 { char name[100]; int namel; 354 namel = (np->n_v4->n4_namelen < 100) ? np->n_v4->n4_namelen : 99; 355 bcopy(NFS4NODENAME(np->n_v4), name, namel); 356 name[namel] = '\0'; 357 printf("rpcopen p=0x%x name=%s",p->p_pid,name); 358 if (nfhp->nfh_len > 0) printf(" fh=0x%x\n",nfhp->nfh_fh[12]); 359 else printf(" fhl=0\n"); 360 } 361 #endif 362 do { 363 dp = NULL; 364 error = nfscl_open(vp, nfhp->nfh_fh, nfhp->nfh_len, mode, 1, 365 cred, p, NULL, &op, &newone, &ret, 1); 366 if (error) { 367 return (error); 368 } 369 if (nmp->nm_clp != NULL) 370 clidrev = nmp->nm_clp->nfsc_clientidrev; 371 else 372 clidrev = 0; 373 if (ret == NFSCLOPEN_DOOPEN) { 374 if (np->n_v4 != NULL) { 375 /* 376 * For the first attempt, try and get a layout, if 377 * pNFS is enabled for the mount. 378 */ 379 if (!NFSHASPNFS(nmp) || nfscl_enablecallb == 0 || 380 nfs_numnfscbd == 0 || 381 (np->n_flag & NNOLAYOUT) != 0 || retrycnt > 0) 382 error = nfsrpc_openrpc(nmp, vp, 383 np->n_v4->n4_data, 384 np->n_v4->n4_fhlen, np->n_fhp->nfh_fh, 385 np->n_fhp->nfh_len, mode, op, 386 NFS4NODENAME(np->n_v4), 387 np->n_v4->n4_namelen, 388 &dp, 0, 0x0, cred, p, 0, 0); 389 else 390 error = nfsrpc_getopenlayout(nmp, vp, 391 np->n_v4->n4_data, 392 np->n_v4->n4_fhlen, np->n_fhp->nfh_fh, 393 np->n_fhp->nfh_len, mode, op, 394 NFS4NODENAME(np->n_v4), 395 np->n_v4->n4_namelen, &dp, cred, p); 396 if (dp != NULL) { 397 #ifdef APPLE 398 OSBitAndAtomic((int32_t)~NDELEGMOD, (UInt32 *)&np->n_flag); 399 #else 400 NFSLOCKNODE(np); 401 np->n_flag &= ~NDELEGMOD; 402 /* 403 * Invalidate the attribute cache, so that 404 * attributes that pre-date the issue of a 405 * delegation are not cached, since the 406 * cached attributes will remain valid while 407 * the delegation is held. 408 */ 409 NFSINVALATTRCACHE(np); 410 NFSUNLOCKNODE(np); 411 #endif 412 (void) nfscl_deleg(nmp->nm_mountp, 413 op->nfso_own->nfsow_clp, 414 nfhp->nfh_fh, nfhp->nfh_len, cred, p, &dp); 415 } 416 } else { 417 error = EIO; 418 } 419 newnfs_copyincred(cred, &op->nfso_cred); 420 } else if (ret == NFSCLOPEN_SETCRED) 421 /* 422 * This is a new local open on a delegation. It needs 423 * to have credentials so that an open can be done 424 * against the server during recovery. 425 */ 426 newnfs_copyincred(cred, &op->nfso_cred); 427 428 /* 429 * nfso_opencnt is the count of how many VOP_OPEN()s have 430 * been done on this Open successfully and a VOP_CLOSE() 431 * is expected for each of these. 432 * If error is non-zero, don't increment it, since the Open 433 * hasn't succeeded yet. 434 */ 435 if (!error) 436 op->nfso_opencnt++; 437 nfscl_openrelease(nmp, op, error, newone); 438 if (error == NFSERR_GRACE || error == NFSERR_STALECLIENTID || 439 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 440 error == NFSERR_BADSESSION) { 441 (void) nfs_catnap(PZERO, error, "nfs_open"); 442 } else if ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) 443 && clidrev != 0) { 444 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p); 445 retrycnt++; 446 } 447 } while (error == NFSERR_GRACE || error == NFSERR_STALECLIENTID || 448 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 449 error == NFSERR_BADSESSION || 450 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) && 451 expireret == 0 && clidrev != 0 && retrycnt < 4)); 452 if (error && retrycnt >= 4) 453 error = EIO; 454 return (error); 455 } 456 457 /* 458 * the actual open rpc 459 */ 460 APPLESTATIC int 461 nfsrpc_openrpc(struct nfsmount *nmp, vnode_t vp, u_int8_t *nfhp, int fhlen, 462 u_int8_t *newfhp, int newfhlen, u_int32_t mode, struct nfsclopen *op, 463 u_int8_t *name, int namelen, struct nfscldeleg **dpp, 464 int reclaim, u_int32_t delegtype, struct ucred *cred, NFSPROC_T *p, 465 int syscred, int recursed) 466 { 467 u_int32_t *tl; 468 struct nfsrv_descript nfsd, *nd = &nfsd; 469 struct nfscldeleg *dp, *ndp = NULL; 470 struct nfsvattr nfsva; 471 u_int32_t rflags, deleg; 472 nfsattrbit_t attrbits; 473 int error, ret, acesize, limitby; 474 struct nfsclsession *tsep; 475 476 dp = *dpp; 477 *dpp = NULL; 478 nfscl_reqstart(nd, NFSPROC_OPEN, nmp, nfhp, fhlen, NULL, NULL, 0, 0); 479 NFSM_BUILD(tl, u_int32_t *, 5 * NFSX_UNSIGNED); 480 *tl++ = txdr_unsigned(op->nfso_own->nfsow_seqid); 481 *tl++ = txdr_unsigned(mode & NFSV4OPEN_ACCESSBOTH); 482 *tl++ = txdr_unsigned((mode >> NFSLCK_SHIFT) & NFSV4OPEN_DENYBOTH); 483 tsep = nfsmnt_mdssession(nmp); 484 *tl++ = tsep->nfsess_clientid.lval[0]; 485 *tl = tsep->nfsess_clientid.lval[1]; 486 (void) nfsm_strtom(nd, op->nfso_own->nfsow_owner, NFSV4CL_LOCKNAMELEN); 487 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 488 *tl++ = txdr_unsigned(NFSV4OPEN_NOCREATE); 489 if (reclaim) { 490 *tl = txdr_unsigned(NFSV4OPEN_CLAIMPREVIOUS); 491 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 492 *tl = txdr_unsigned(delegtype); 493 } else { 494 if (dp != NULL) { 495 *tl = txdr_unsigned(NFSV4OPEN_CLAIMDELEGATECUR); 496 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID); 497 if (NFSHASNFSV4N(nmp)) 498 *tl++ = 0; 499 else 500 *tl++ = dp->nfsdl_stateid.seqid; 501 *tl++ = dp->nfsdl_stateid.other[0]; 502 *tl++ = dp->nfsdl_stateid.other[1]; 503 *tl = dp->nfsdl_stateid.other[2]; 504 } else { 505 *tl = txdr_unsigned(NFSV4OPEN_CLAIMNULL); 506 } 507 (void) nfsm_strtom(nd, name, namelen); 508 } 509 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 510 *tl = txdr_unsigned(NFSV4OP_GETATTR); 511 NFSZERO_ATTRBIT(&attrbits); 512 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_CHANGE); 513 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_TIMEMODIFY); 514 (void) nfsrv_putattrbit(nd, &attrbits); 515 if (syscred) 516 nd->nd_flag |= ND_USEGSSNAME; 517 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, vp, p, cred, 518 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 519 if (error) 520 return (error); 521 NFSCL_INCRSEQID(op->nfso_own->nfsow_seqid, nd); 522 if (!nd->nd_repstat) { 523 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID + 524 6 * NFSX_UNSIGNED); 525 op->nfso_stateid.seqid = *tl++; 526 op->nfso_stateid.other[0] = *tl++; 527 op->nfso_stateid.other[1] = *tl++; 528 op->nfso_stateid.other[2] = *tl; 529 rflags = fxdr_unsigned(u_int32_t, *(tl + 6)); 530 error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL); 531 if (error) 532 goto nfsmout; 533 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 534 deleg = fxdr_unsigned(u_int32_t, *tl); 535 if (deleg == NFSV4OPEN_DELEGATEREAD || 536 deleg == NFSV4OPEN_DELEGATEWRITE) { 537 if (!(op->nfso_own->nfsow_clp->nfsc_flags & 538 NFSCLFLAGS_FIRSTDELEG)) 539 op->nfso_own->nfsow_clp->nfsc_flags |= 540 (NFSCLFLAGS_FIRSTDELEG | NFSCLFLAGS_GOTDELEG); 541 ndp = malloc( 542 sizeof (struct nfscldeleg) + newfhlen, 543 M_NFSCLDELEG, M_WAITOK); 544 LIST_INIT(&ndp->nfsdl_owner); 545 LIST_INIT(&ndp->nfsdl_lock); 546 ndp->nfsdl_clp = op->nfso_own->nfsow_clp; 547 ndp->nfsdl_fhlen = newfhlen; 548 NFSBCOPY(newfhp, ndp->nfsdl_fh, newfhlen); 549 newnfs_copyincred(cred, &ndp->nfsdl_cred); 550 nfscl_lockinit(&ndp->nfsdl_rwlock); 551 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID + 552 NFSX_UNSIGNED); 553 ndp->nfsdl_stateid.seqid = *tl++; 554 ndp->nfsdl_stateid.other[0] = *tl++; 555 ndp->nfsdl_stateid.other[1] = *tl++; 556 ndp->nfsdl_stateid.other[2] = *tl++; 557 ret = fxdr_unsigned(int, *tl); 558 if (deleg == NFSV4OPEN_DELEGATEWRITE) { 559 ndp->nfsdl_flags = NFSCLDL_WRITE; 560 /* 561 * Indicates how much the file can grow. 562 */ 563 NFSM_DISSECT(tl, u_int32_t *, 564 3 * NFSX_UNSIGNED); 565 limitby = fxdr_unsigned(int, *tl++); 566 switch (limitby) { 567 case NFSV4OPEN_LIMITSIZE: 568 ndp->nfsdl_sizelimit = fxdr_hyper(tl); 569 break; 570 case NFSV4OPEN_LIMITBLOCKS: 571 ndp->nfsdl_sizelimit = 572 fxdr_unsigned(u_int64_t, *tl++); 573 ndp->nfsdl_sizelimit *= 574 fxdr_unsigned(u_int64_t, *tl); 575 break; 576 default: 577 error = NFSERR_BADXDR; 578 goto nfsmout; 579 } 580 } else { 581 ndp->nfsdl_flags = NFSCLDL_READ; 582 } 583 if (ret) 584 ndp->nfsdl_flags |= NFSCLDL_RECALL; 585 error = nfsrv_dissectace(nd, &ndp->nfsdl_ace, &ret, 586 &acesize, p); 587 if (error) 588 goto nfsmout; 589 } else if (deleg != NFSV4OPEN_DELEGATENONE) { 590 error = NFSERR_BADXDR; 591 goto nfsmout; 592 } 593 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 594 error = nfsv4_loadattr(nd, NULL, &nfsva, NULL, 595 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0, 596 NULL, NULL, NULL, p, cred); 597 if (error) 598 goto nfsmout; 599 if (ndp != NULL) { 600 ndp->nfsdl_change = nfsva.na_filerev; 601 ndp->nfsdl_modtime = nfsva.na_mtime; 602 ndp->nfsdl_flags |= NFSCLDL_MODTIMESET; 603 } 604 if (!reclaim && (rflags & NFSV4OPEN_RESULTCONFIRM)) { 605 do { 606 ret = nfsrpc_openconfirm(vp, newfhp, newfhlen, op, 607 cred, p); 608 if (ret == NFSERR_DELAY) 609 (void) nfs_catnap(PZERO, ret, "nfs_open"); 610 } while (ret == NFSERR_DELAY); 611 error = ret; 612 } 613 if ((rflags & NFSV4OPEN_LOCKTYPEPOSIX) || 614 nfscl_assumeposixlocks) 615 op->nfso_posixlock = 1; 616 else 617 op->nfso_posixlock = 0; 618 619 /* 620 * If the server is handing out delegations, but we didn't 621 * get one because an OpenConfirm was required, try the 622 * Open again, to get a delegation. This is a harmless no-op, 623 * from a server's point of view. 624 */ 625 if (!reclaim && (rflags & NFSV4OPEN_RESULTCONFIRM) && 626 (op->nfso_own->nfsow_clp->nfsc_flags & NFSCLFLAGS_GOTDELEG) 627 && !error && dp == NULL && ndp == NULL && !recursed) { 628 do { 629 ret = nfsrpc_openrpc(nmp, vp, nfhp, fhlen, newfhp, 630 newfhlen, mode, op, name, namelen, &ndp, 0, 0x0, 631 cred, p, syscred, 1); 632 if (ret == NFSERR_DELAY) 633 (void) nfs_catnap(PZERO, ret, "nfs_open2"); 634 } while (ret == NFSERR_DELAY); 635 if (ret) { 636 if (ndp != NULL) { 637 free(ndp, M_NFSCLDELEG); 638 ndp = NULL; 639 } 640 if (ret == NFSERR_STALECLIENTID || 641 ret == NFSERR_STALEDONTRECOVER || 642 ret == NFSERR_BADSESSION) 643 error = ret; 644 } 645 } 646 } 647 if (nd->nd_repstat != 0 && error == 0) 648 error = nd->nd_repstat; 649 if (error == NFSERR_STALECLIENTID) 650 nfscl_initiate_recovery(op->nfso_own->nfsow_clp); 651 nfsmout: 652 if (!error) 653 *dpp = ndp; 654 else if (ndp != NULL) 655 free(ndp, M_NFSCLDELEG); 656 mbuf_freem(nd->nd_mrep); 657 return (error); 658 } 659 660 /* 661 * open downgrade rpc 662 */ 663 APPLESTATIC int 664 nfsrpc_opendowngrade(vnode_t vp, u_int32_t mode, struct nfsclopen *op, 665 struct ucred *cred, NFSPROC_T *p) 666 { 667 u_int32_t *tl; 668 struct nfsrv_descript nfsd, *nd = &nfsd; 669 int error; 670 671 NFSCL_REQSTART(nd, NFSPROC_OPENDOWNGRADE, vp); 672 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID + 3 * NFSX_UNSIGNED); 673 if (NFSHASNFSV4N(VFSTONFS(vnode_mount(vp)))) 674 *tl++ = 0; 675 else 676 *tl++ = op->nfso_stateid.seqid; 677 *tl++ = op->nfso_stateid.other[0]; 678 *tl++ = op->nfso_stateid.other[1]; 679 *tl++ = op->nfso_stateid.other[2]; 680 *tl++ = txdr_unsigned(op->nfso_own->nfsow_seqid); 681 *tl++ = txdr_unsigned(mode & NFSV4OPEN_ACCESSBOTH); 682 *tl = txdr_unsigned((mode >> NFSLCK_SHIFT) & NFSV4OPEN_DENYBOTH); 683 error = nfscl_request(nd, vp, p, cred, NULL); 684 if (error) 685 return (error); 686 NFSCL_INCRSEQID(op->nfso_own->nfsow_seqid, nd); 687 if (!nd->nd_repstat) { 688 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID); 689 op->nfso_stateid.seqid = *tl++; 690 op->nfso_stateid.other[0] = *tl++; 691 op->nfso_stateid.other[1] = *tl++; 692 op->nfso_stateid.other[2] = *tl; 693 } 694 if (nd->nd_repstat && error == 0) 695 error = nd->nd_repstat; 696 if (error == NFSERR_STALESTATEID) 697 nfscl_initiate_recovery(op->nfso_own->nfsow_clp); 698 nfsmout: 699 mbuf_freem(nd->nd_mrep); 700 return (error); 701 } 702 703 /* 704 * V4 Close operation. 705 */ 706 APPLESTATIC int 707 nfsrpc_close(vnode_t vp, int doclose, NFSPROC_T *p) 708 { 709 struct nfsclclient *clp; 710 int error; 711 712 if (vnode_vtype(vp) != VREG) 713 return (0); 714 if (doclose) 715 error = nfscl_doclose(vp, &clp, p); 716 else 717 error = nfscl_getclose(vp, &clp); 718 if (error) 719 return (error); 720 721 nfscl_clientrelease(clp); 722 return (0); 723 } 724 725 /* 726 * Close the open. 727 */ 728 APPLESTATIC void 729 nfsrpc_doclose(struct nfsmount *nmp, struct nfsclopen *op, NFSPROC_T *p) 730 { 731 struct nfsrv_descript nfsd, *nd = &nfsd; 732 struct nfscllockowner *lp, *nlp; 733 struct nfscllock *lop, *nlop; 734 struct ucred *tcred; 735 u_int64_t off = 0, len = 0; 736 u_int32_t type = NFSV4LOCKT_READ; 737 int error, do_unlock, trycnt; 738 739 tcred = newnfs_getcred(); 740 newnfs_copycred(&op->nfso_cred, tcred); 741 /* 742 * (Theoretically this could be done in the same 743 * compound as the close, but having multiple 744 * sequenced Ops in the same compound might be 745 * too scary for some servers.) 746 */ 747 if (op->nfso_posixlock) { 748 off = 0; 749 len = NFS64BITSSET; 750 type = NFSV4LOCKT_READ; 751 } 752 753 /* 754 * Since this function is only called from VOP_INACTIVE(), no 755 * other thread will be manipulating this Open. As such, the 756 * lock lists are not being changed by other threads, so it should 757 * be safe to do this without locking. 758 */ 759 LIST_FOREACH(lp, &op->nfso_lock, nfsl_list) { 760 do_unlock = 1; 761 LIST_FOREACH_SAFE(lop, &lp->nfsl_lock, nfslo_list, nlop) { 762 if (op->nfso_posixlock == 0) { 763 off = lop->nfslo_first; 764 len = lop->nfslo_end - lop->nfslo_first; 765 if (lop->nfslo_type == F_WRLCK) 766 type = NFSV4LOCKT_WRITE; 767 else 768 type = NFSV4LOCKT_READ; 769 } 770 if (do_unlock) { 771 trycnt = 0; 772 do { 773 error = nfsrpc_locku(nd, nmp, lp, off, 774 len, type, tcred, p, 0); 775 if ((nd->nd_repstat == NFSERR_GRACE || 776 nd->nd_repstat == NFSERR_DELAY) && 777 error == 0) 778 (void) nfs_catnap(PZERO, 779 (int)nd->nd_repstat, 780 "nfs_close"); 781 } while ((nd->nd_repstat == NFSERR_GRACE || 782 nd->nd_repstat == NFSERR_DELAY) && 783 error == 0 && trycnt++ < 5); 784 if (op->nfso_posixlock) 785 do_unlock = 0; 786 } 787 nfscl_freelock(lop, 0); 788 } 789 /* 790 * Do a ReleaseLockOwner. 791 * The lock owner name nfsl_owner may be used by other opens for 792 * other files but the lock_owner4 name that nfsrpc_rellockown() 793 * puts on the wire has the file handle for this file appended 794 * to it, so it can be done now. 795 */ 796 (void)nfsrpc_rellockown(nmp, lp, lp->nfsl_open->nfso_fh, 797 lp->nfsl_open->nfso_fhlen, tcred, p); 798 } 799 800 /* 801 * There could be other Opens for different files on the same 802 * OpenOwner, so locking is required. 803 */ 804 NFSLOCKCLSTATE(); 805 nfscl_lockexcl(&op->nfso_own->nfsow_rwlock, NFSCLSTATEMUTEXPTR); 806 NFSUNLOCKCLSTATE(); 807 do { 808 error = nfscl_tryclose(op, tcred, nmp, p); 809 if (error == NFSERR_GRACE) 810 (void) nfs_catnap(PZERO, error, "nfs_close"); 811 } while (error == NFSERR_GRACE); 812 NFSLOCKCLSTATE(); 813 nfscl_lockunlock(&op->nfso_own->nfsow_rwlock); 814 815 LIST_FOREACH_SAFE(lp, &op->nfso_lock, nfsl_list, nlp) 816 nfscl_freelockowner(lp, 0); 817 nfscl_freeopen(op, 0); 818 NFSUNLOCKCLSTATE(); 819 NFSFREECRED(tcred); 820 } 821 822 /* 823 * The actual Close RPC. 824 */ 825 APPLESTATIC int 826 nfsrpc_closerpc(struct nfsrv_descript *nd, struct nfsmount *nmp, 827 struct nfsclopen *op, struct ucred *cred, NFSPROC_T *p, 828 int syscred) 829 { 830 u_int32_t *tl; 831 int error; 832 833 nfscl_reqstart(nd, NFSPROC_CLOSE, nmp, op->nfso_fh, 834 op->nfso_fhlen, NULL, NULL, 0, 0); 835 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED + NFSX_STATEID); 836 *tl++ = txdr_unsigned(op->nfso_own->nfsow_seqid); 837 if (NFSHASNFSV4N(nmp)) 838 *tl++ = 0; 839 else 840 *tl++ = op->nfso_stateid.seqid; 841 *tl++ = op->nfso_stateid.other[0]; 842 *tl++ = op->nfso_stateid.other[1]; 843 *tl = op->nfso_stateid.other[2]; 844 if (syscred) 845 nd->nd_flag |= ND_USEGSSNAME; 846 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 847 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 848 if (error) 849 return (error); 850 NFSCL_INCRSEQID(op->nfso_own->nfsow_seqid, nd); 851 if (nd->nd_repstat == 0) 852 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID); 853 error = nd->nd_repstat; 854 if (error == NFSERR_STALESTATEID) 855 nfscl_initiate_recovery(op->nfso_own->nfsow_clp); 856 nfsmout: 857 mbuf_freem(nd->nd_mrep); 858 return (error); 859 } 860 861 /* 862 * V4 Open Confirm RPC. 863 */ 864 APPLESTATIC int 865 nfsrpc_openconfirm(vnode_t vp, u_int8_t *nfhp, int fhlen, 866 struct nfsclopen *op, struct ucred *cred, NFSPROC_T *p) 867 { 868 u_int32_t *tl; 869 struct nfsrv_descript nfsd, *nd = &nfsd; 870 struct nfsmount *nmp; 871 int error; 872 873 nmp = VFSTONFS(vnode_mount(vp)); 874 if (NFSHASNFSV4N(nmp)) 875 return (0); /* No confirmation for NFSv4.1. */ 876 nfscl_reqstart(nd, NFSPROC_OPENCONFIRM, nmp, nfhp, fhlen, NULL, NULL, 877 0, 0); 878 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED + NFSX_STATEID); 879 *tl++ = op->nfso_stateid.seqid; 880 *tl++ = op->nfso_stateid.other[0]; 881 *tl++ = op->nfso_stateid.other[1]; 882 *tl++ = op->nfso_stateid.other[2]; 883 *tl = txdr_unsigned(op->nfso_own->nfsow_seqid); 884 error = nfscl_request(nd, vp, p, cred, NULL); 885 if (error) 886 return (error); 887 NFSCL_INCRSEQID(op->nfso_own->nfsow_seqid, nd); 888 if (!nd->nd_repstat) { 889 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID); 890 op->nfso_stateid.seqid = *tl++; 891 op->nfso_stateid.other[0] = *tl++; 892 op->nfso_stateid.other[1] = *tl++; 893 op->nfso_stateid.other[2] = *tl; 894 } 895 error = nd->nd_repstat; 896 if (error == NFSERR_STALESTATEID) 897 nfscl_initiate_recovery(op->nfso_own->nfsow_clp); 898 nfsmout: 899 mbuf_freem(nd->nd_mrep); 900 return (error); 901 } 902 903 /* 904 * Do the setclientid and setclientid confirm RPCs. Called from nfs_statfs() 905 * when a mount has just occurred and when the server replies NFSERR_EXPIRED. 906 */ 907 APPLESTATIC int 908 nfsrpc_setclient(struct nfsmount *nmp, struct nfsclclient *clp, int reclaim, 909 struct ucred *cred, NFSPROC_T *p) 910 { 911 u_int32_t *tl; 912 struct nfsrv_descript nfsd; 913 struct nfsrv_descript *nd = &nfsd; 914 nfsattrbit_t attrbits; 915 u_int8_t *cp = NULL, *cp2, addr[INET6_ADDRSTRLEN + 9]; 916 u_short port; 917 int error, isinet6 = 0, callblen; 918 nfsquad_t confirm; 919 u_int32_t lease; 920 static u_int32_t rev = 0; 921 struct nfsclds *dsp; 922 struct in6_addr a6; 923 struct nfsclsession *tsep; 924 925 if (nfsboottime.tv_sec == 0) 926 NFSSETBOOTTIME(nfsboottime); 927 clp->nfsc_rev = rev++; 928 if (NFSHASNFSV4N(nmp)) { 929 /* 930 * Either there was no previous session or the 931 * previous session has failed, so... 932 * do an ExchangeID followed by the CreateSession. 933 */ 934 error = nfsrpc_exchangeid(nmp, clp, &nmp->nm_sockreq, 935 NFSV4EXCH_USEPNFSMDS | NFSV4EXCH_USENONPNFS, &dsp, cred, p); 936 NFSCL_DEBUG(1, "aft exch=%d\n", error); 937 if (error == 0) 938 error = nfsrpc_createsession(nmp, &dsp->nfsclds_sess, 939 &nmp->nm_sockreq, 940 dsp->nfsclds_sess.nfsess_sequenceid, 1, cred, p); 941 if (error == 0) { 942 NFSLOCKMNT(nmp); 943 /* 944 * The old sessions cannot be safely free'd 945 * here, since they may still be used by 946 * in-progress RPCs. 947 */ 948 tsep = NULL; 949 if (TAILQ_FIRST(&nmp->nm_sess) != NULL) 950 tsep = NFSMNT_MDSSESSION(nmp); 951 TAILQ_INSERT_HEAD(&nmp->nm_sess, dsp, 952 nfsclds_list); 953 /* 954 * Wake up RPCs waiting for a slot on the 955 * old session. These will then fail with 956 * NFSERR_BADSESSION and be retried with the 957 * new session by nfsv4_setsequence(). 958 * Also wakeup() processes waiting for the 959 * new session. 960 */ 961 if (tsep != NULL) 962 wakeup(&tsep->nfsess_slots); 963 wakeup(&nmp->nm_sess); 964 NFSUNLOCKMNT(nmp); 965 } else 966 nfscl_freenfsclds(dsp); 967 NFSCL_DEBUG(1, "aft createsess=%d\n", error); 968 if (error == 0 && reclaim == 0) { 969 error = nfsrpc_reclaimcomplete(nmp, cred, p); 970 NFSCL_DEBUG(1, "aft reclaimcomp=%d\n", error); 971 if (error == NFSERR_COMPLETEALREADY || 972 error == NFSERR_NOTSUPP) 973 /* Ignore this error. */ 974 error = 0; 975 } 976 return (error); 977 } 978 979 /* 980 * Allocate a single session structure for NFSv4.0, because some of 981 * the fields are used by NFSv4.0 although it doesn't do a session. 982 */ 983 dsp = malloc(sizeof(struct nfsclds), M_NFSCLDS, M_WAITOK | M_ZERO); 984 mtx_init(&dsp->nfsclds_mtx, "nfsds", NULL, MTX_DEF); 985 mtx_init(&dsp->nfsclds_sess.nfsess_mtx, "nfssession", NULL, MTX_DEF); 986 NFSLOCKMNT(nmp); 987 TAILQ_INSERT_HEAD(&nmp->nm_sess, dsp, nfsclds_list); 988 tsep = NFSMNT_MDSSESSION(nmp); 989 NFSUNLOCKMNT(nmp); 990 991 nfscl_reqstart(nd, NFSPROC_SETCLIENTID, nmp, NULL, 0, NULL, NULL, 0, 0); 992 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 993 *tl++ = txdr_unsigned(nfsboottime.tv_sec); 994 *tl = txdr_unsigned(clp->nfsc_rev); 995 (void) nfsm_strtom(nd, clp->nfsc_id, clp->nfsc_idlen); 996 997 /* 998 * set up the callback address 999 */ 1000 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1001 *tl = txdr_unsigned(NFS_CALLBCKPROG); 1002 callblen = strlen(nfsv4_callbackaddr); 1003 if (callblen == 0) 1004 cp = nfscl_getmyip(nmp, &a6, &isinet6); 1005 if (nfscl_enablecallb && nfs_numnfscbd > 0 && 1006 (callblen > 0 || cp != NULL)) { 1007 port = htons(nfsv4_cbport); 1008 cp2 = (u_int8_t *)&port; 1009 #ifdef INET6 1010 if ((callblen > 0 && 1011 strchr(nfsv4_callbackaddr, ':')) || isinet6) { 1012 char ip6buf[INET6_ADDRSTRLEN], *ip6add; 1013 1014 (void) nfsm_strtom(nd, "tcp6", 4); 1015 if (callblen == 0) { 1016 ip6_sprintf(ip6buf, (struct in6_addr *)cp); 1017 ip6add = ip6buf; 1018 } else { 1019 ip6add = nfsv4_callbackaddr; 1020 } 1021 snprintf(addr, INET6_ADDRSTRLEN + 9, "%s.%d.%d", 1022 ip6add, cp2[0], cp2[1]); 1023 } else 1024 #endif 1025 { 1026 (void) nfsm_strtom(nd, "tcp", 3); 1027 if (callblen == 0) 1028 snprintf(addr, INET6_ADDRSTRLEN + 9, 1029 "%d.%d.%d.%d.%d.%d", cp[0], cp[1], 1030 cp[2], cp[3], cp2[0], cp2[1]); 1031 else 1032 snprintf(addr, INET6_ADDRSTRLEN + 9, 1033 "%s.%d.%d", nfsv4_callbackaddr, 1034 cp2[0], cp2[1]); 1035 } 1036 (void) nfsm_strtom(nd, addr, strlen(addr)); 1037 } else { 1038 (void) nfsm_strtom(nd, "tcp", 3); 1039 (void) nfsm_strtom(nd, "0.0.0.0.0.0", 11); 1040 } 1041 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1042 *tl = txdr_unsigned(clp->nfsc_cbident); 1043 nd->nd_flag |= ND_USEGSSNAME; 1044 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 1045 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 1046 if (error) 1047 return (error); 1048 if (nd->nd_repstat == 0) { 1049 NFSM_DISSECT(tl, u_int32_t *, 4 * NFSX_UNSIGNED); 1050 tsep->nfsess_clientid.lval[0] = *tl++; 1051 tsep->nfsess_clientid.lval[1] = *tl++; 1052 confirm.lval[0] = *tl++; 1053 confirm.lval[1] = *tl; 1054 mbuf_freem(nd->nd_mrep); 1055 nd->nd_mrep = NULL; 1056 1057 /* 1058 * and confirm it. 1059 */ 1060 nfscl_reqstart(nd, NFSPROC_SETCLIENTIDCFRM, nmp, NULL, 0, NULL, 1061 NULL, 0, 0); 1062 NFSM_BUILD(tl, u_int32_t *, 4 * NFSX_UNSIGNED); 1063 *tl++ = tsep->nfsess_clientid.lval[0]; 1064 *tl++ = tsep->nfsess_clientid.lval[1]; 1065 *tl++ = confirm.lval[0]; 1066 *tl = confirm.lval[1]; 1067 nd->nd_flag |= ND_USEGSSNAME; 1068 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, 1069 cred, NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 1070 if (error) 1071 return (error); 1072 mbuf_freem(nd->nd_mrep); 1073 nd->nd_mrep = NULL; 1074 if (nd->nd_repstat == 0) { 1075 nfscl_reqstart(nd, NFSPROC_GETATTR, nmp, nmp->nm_fh, 1076 nmp->nm_fhsize, NULL, NULL, 0, 0); 1077 NFSZERO_ATTRBIT(&attrbits); 1078 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_LEASETIME); 1079 (void) nfsrv_putattrbit(nd, &attrbits); 1080 nd->nd_flag |= ND_USEGSSNAME; 1081 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, 1082 cred, NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 1083 if (error) 1084 return (error); 1085 if (nd->nd_repstat == 0) { 1086 error = nfsv4_loadattr(nd, NULL, NULL, NULL, NULL, 0, NULL, 1087 NULL, NULL, NULL, NULL, 0, NULL, &lease, NULL, p, cred); 1088 if (error) 1089 goto nfsmout; 1090 clp->nfsc_renew = NFSCL_RENEW(lease); 1091 clp->nfsc_expire = NFSD_MONOSEC + clp->nfsc_renew; 1092 clp->nfsc_clientidrev++; 1093 if (clp->nfsc_clientidrev == 0) 1094 clp->nfsc_clientidrev++; 1095 } 1096 } 1097 } 1098 error = nd->nd_repstat; 1099 nfsmout: 1100 mbuf_freem(nd->nd_mrep); 1101 return (error); 1102 } 1103 1104 /* 1105 * nfs getattr call. 1106 */ 1107 APPLESTATIC int 1108 nfsrpc_getattr(vnode_t vp, struct ucred *cred, NFSPROC_T *p, 1109 struct nfsvattr *nap, void *stuff) 1110 { 1111 struct nfsrv_descript nfsd, *nd = &nfsd; 1112 int error; 1113 nfsattrbit_t attrbits; 1114 1115 NFSCL_REQSTART(nd, NFSPROC_GETATTR, vp); 1116 if (nd->nd_flag & ND_NFSV4) { 1117 NFSGETATTR_ATTRBIT(&attrbits); 1118 (void) nfsrv_putattrbit(nd, &attrbits); 1119 } 1120 error = nfscl_request(nd, vp, p, cred, stuff); 1121 if (error) 1122 return (error); 1123 if (!nd->nd_repstat) 1124 error = nfsm_loadattr(nd, nap); 1125 else 1126 error = nd->nd_repstat; 1127 mbuf_freem(nd->nd_mrep); 1128 return (error); 1129 } 1130 1131 /* 1132 * nfs getattr call with non-vnode arguemnts. 1133 */ 1134 APPLESTATIC int 1135 nfsrpc_getattrnovp(struct nfsmount *nmp, u_int8_t *fhp, int fhlen, int syscred, 1136 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, u_int64_t *xidp, 1137 uint32_t *leasep) 1138 { 1139 struct nfsrv_descript nfsd, *nd = &nfsd; 1140 int error, vers = NFS_VER2; 1141 nfsattrbit_t attrbits; 1142 1143 nfscl_reqstart(nd, NFSPROC_GETATTR, nmp, fhp, fhlen, NULL, NULL, 0, 0); 1144 if (nd->nd_flag & ND_NFSV4) { 1145 vers = NFS_VER4; 1146 NFSGETATTR_ATTRBIT(&attrbits); 1147 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_LEASETIME); 1148 (void) nfsrv_putattrbit(nd, &attrbits); 1149 } else if (nd->nd_flag & ND_NFSV3) { 1150 vers = NFS_VER3; 1151 } 1152 if (syscred) 1153 nd->nd_flag |= ND_USEGSSNAME; 1154 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 1155 NFS_PROG, vers, NULL, 1, xidp, NULL); 1156 if (error) 1157 return (error); 1158 if (nd->nd_repstat == 0) { 1159 if ((nd->nd_flag & ND_NFSV4) != 0) 1160 error = nfsv4_loadattr(nd, NULL, nap, NULL, NULL, 0, 1161 NULL, NULL, NULL, NULL, NULL, 0, NULL, leasep, NULL, 1162 NULL, NULL); 1163 else 1164 error = nfsm_loadattr(nd, nap); 1165 } else 1166 error = nd->nd_repstat; 1167 mbuf_freem(nd->nd_mrep); 1168 return (error); 1169 } 1170 1171 /* 1172 * Do an nfs setattr operation. 1173 */ 1174 APPLESTATIC int 1175 nfsrpc_setattr(vnode_t vp, struct vattr *vap, NFSACL_T *aclp, 1176 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *rnap, int *attrflagp, 1177 void *stuff) 1178 { 1179 int error, expireret = 0, openerr, retrycnt; 1180 u_int32_t clidrev = 0, mode; 1181 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 1182 struct nfsfh *nfhp; 1183 nfsv4stateid_t stateid; 1184 void *lckp; 1185 1186 if (nmp->nm_clp != NULL) 1187 clidrev = nmp->nm_clp->nfsc_clientidrev; 1188 if (vap != NULL && NFSATTRISSET(u_quad_t, vap, va_size)) 1189 mode = NFSV4OPEN_ACCESSWRITE; 1190 else 1191 mode = NFSV4OPEN_ACCESSREAD; 1192 retrycnt = 0; 1193 do { 1194 lckp = NULL; 1195 openerr = 1; 1196 if (NFSHASNFSV4(nmp)) { 1197 nfhp = VTONFS(vp)->n_fhp; 1198 error = nfscl_getstateid(vp, nfhp->nfh_fh, 1199 nfhp->nfh_len, mode, 0, cred, p, &stateid, &lckp); 1200 if (error && vnode_vtype(vp) == VREG && 1201 (mode == NFSV4OPEN_ACCESSWRITE || 1202 nfstest_openallsetattr)) { 1203 /* 1204 * No Open stateid, so try and open the file 1205 * now. 1206 */ 1207 if (mode == NFSV4OPEN_ACCESSWRITE) 1208 openerr = nfsrpc_open(vp, FWRITE, cred, 1209 p); 1210 else 1211 openerr = nfsrpc_open(vp, FREAD, cred, 1212 p); 1213 if (!openerr) 1214 (void) nfscl_getstateid(vp, 1215 nfhp->nfh_fh, nfhp->nfh_len, 1216 mode, 0, cred, p, &stateid, &lckp); 1217 } 1218 } 1219 if (vap != NULL) 1220 error = nfsrpc_setattrrpc(vp, vap, &stateid, cred, p, 1221 rnap, attrflagp, stuff); 1222 else 1223 error = nfsrpc_setaclrpc(vp, cred, p, aclp, &stateid, 1224 stuff); 1225 if (error == NFSERR_OPENMODE && mode == NFSV4OPEN_ACCESSREAD) { 1226 NFSLOCKMNT(nmp); 1227 nmp->nm_state |= NFSSTA_OPENMODE; 1228 NFSUNLOCKMNT(nmp); 1229 } 1230 if (error == NFSERR_STALESTATEID) 1231 nfscl_initiate_recovery(nmp->nm_clp); 1232 if (lckp != NULL) 1233 nfscl_lockderef(lckp); 1234 if (!openerr) 1235 (void) nfsrpc_close(vp, 0, p); 1236 if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 1237 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 1238 error == NFSERR_OLDSTATEID || error == NFSERR_BADSESSION) { 1239 (void) nfs_catnap(PZERO, error, "nfs_setattr"); 1240 } else if ((error == NFSERR_EXPIRED || 1241 error == NFSERR_BADSTATEID) && clidrev != 0) { 1242 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p); 1243 } 1244 retrycnt++; 1245 } while (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 1246 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 1247 error == NFSERR_BADSESSION || 1248 (error == NFSERR_OLDSTATEID && retrycnt < 20) || 1249 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) && 1250 expireret == 0 && clidrev != 0 && retrycnt < 4) || 1251 (error == NFSERR_OPENMODE && mode == NFSV4OPEN_ACCESSREAD && 1252 retrycnt < 4)); 1253 if (error && retrycnt >= 4) 1254 error = EIO; 1255 return (error); 1256 } 1257 1258 static int 1259 nfsrpc_setattrrpc(vnode_t vp, struct vattr *vap, 1260 nfsv4stateid_t *stateidp, struct ucred *cred, NFSPROC_T *p, 1261 struct nfsvattr *rnap, int *attrflagp, void *stuff) 1262 { 1263 u_int32_t *tl; 1264 struct nfsrv_descript nfsd, *nd = &nfsd; 1265 int error; 1266 nfsattrbit_t attrbits; 1267 1268 *attrflagp = 0; 1269 NFSCL_REQSTART(nd, NFSPROC_SETATTR, vp); 1270 if (nd->nd_flag & ND_NFSV4) 1271 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID); 1272 vap->va_type = vnode_vtype(vp); 1273 nfscl_fillsattr(nd, vap, vp, NFSSATTR_FULL, 0); 1274 if (nd->nd_flag & ND_NFSV3) { 1275 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1276 *tl = newnfs_false; 1277 } else if (nd->nd_flag & ND_NFSV4) { 1278 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1279 *tl = txdr_unsigned(NFSV4OP_GETATTR); 1280 NFSGETATTR_ATTRBIT(&attrbits); 1281 (void) nfsrv_putattrbit(nd, &attrbits); 1282 } 1283 error = nfscl_request(nd, vp, p, cred, stuff); 1284 if (error) 1285 return (error); 1286 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) 1287 error = nfscl_wcc_data(nd, vp, rnap, attrflagp, NULL, stuff); 1288 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == ND_NFSV4 && !error) 1289 error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL); 1290 if (!(nd->nd_flag & ND_NFSV3) && !nd->nd_repstat && !error) 1291 error = nfscl_postop_attr(nd, rnap, attrflagp, stuff); 1292 mbuf_freem(nd->nd_mrep); 1293 if (nd->nd_repstat && !error) 1294 error = nd->nd_repstat; 1295 return (error); 1296 } 1297 1298 /* 1299 * nfs lookup rpc 1300 */ 1301 APPLESTATIC int 1302 nfsrpc_lookup(vnode_t dvp, char *name, int len, struct ucred *cred, 1303 NFSPROC_T *p, struct nfsvattr *dnap, struct nfsvattr *nap, 1304 struct nfsfh **nfhpp, int *attrflagp, int *dattrflagp, void *stuff) 1305 { 1306 u_int32_t *tl; 1307 struct nfsrv_descript nfsd, *nd = &nfsd; 1308 struct nfsmount *nmp; 1309 struct nfsnode *np; 1310 struct nfsfh *nfhp; 1311 nfsattrbit_t attrbits; 1312 int error = 0, lookupp = 0; 1313 1314 *attrflagp = 0; 1315 *dattrflagp = 0; 1316 if (vnode_vtype(dvp) != VDIR) 1317 return (ENOTDIR); 1318 nmp = VFSTONFS(vnode_mount(dvp)); 1319 if (len > NFS_MAXNAMLEN) 1320 return (ENAMETOOLONG); 1321 if (NFSHASNFSV4(nmp) && len == 1 && 1322 name[0] == '.') { 1323 /* 1324 * Just return the current dir's fh. 1325 */ 1326 np = VTONFS(dvp); 1327 nfhp = malloc(sizeof (struct nfsfh) + 1328 np->n_fhp->nfh_len, M_NFSFH, M_WAITOK); 1329 nfhp->nfh_len = np->n_fhp->nfh_len; 1330 NFSBCOPY(np->n_fhp->nfh_fh, nfhp->nfh_fh, nfhp->nfh_len); 1331 *nfhpp = nfhp; 1332 return (0); 1333 } 1334 if (NFSHASNFSV4(nmp) && len == 2 && 1335 name[0] == '.' && name[1] == '.') { 1336 lookupp = 1; 1337 NFSCL_REQSTART(nd, NFSPROC_LOOKUPP, dvp); 1338 } else { 1339 NFSCL_REQSTART(nd, NFSPROC_LOOKUP, dvp); 1340 (void) nfsm_strtom(nd, name, len); 1341 } 1342 if (nd->nd_flag & ND_NFSV4) { 1343 NFSGETATTR_ATTRBIT(&attrbits); 1344 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1345 *tl++ = txdr_unsigned(NFSV4OP_GETFH); 1346 *tl = txdr_unsigned(NFSV4OP_GETATTR); 1347 (void) nfsrv_putattrbit(nd, &attrbits); 1348 } 1349 error = nfscl_request(nd, dvp, p, cred, stuff); 1350 if (error) 1351 return (error); 1352 if (nd->nd_repstat) { 1353 /* 1354 * When an NFSv4 Lookupp returns ENOENT, it means that 1355 * the lookup is at the root of an fs, so return this dir. 1356 */ 1357 if (nd->nd_repstat == NFSERR_NOENT && lookupp) { 1358 np = VTONFS(dvp); 1359 nfhp = malloc(sizeof (struct nfsfh) + 1360 np->n_fhp->nfh_len, M_NFSFH, M_WAITOK); 1361 nfhp->nfh_len = np->n_fhp->nfh_len; 1362 NFSBCOPY(np->n_fhp->nfh_fh, nfhp->nfh_fh, nfhp->nfh_len); 1363 *nfhpp = nfhp; 1364 mbuf_freem(nd->nd_mrep); 1365 return (0); 1366 } 1367 if (nd->nd_flag & ND_NFSV3) 1368 error = nfscl_postop_attr(nd, dnap, dattrflagp, stuff); 1369 else if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == 1370 ND_NFSV4) { 1371 /* Load the directory attributes. */ 1372 error = nfsm_loadattr(nd, dnap); 1373 if (error == 0) 1374 *dattrflagp = 1; 1375 } 1376 goto nfsmout; 1377 } 1378 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == ND_NFSV4) { 1379 /* Load the directory attributes. */ 1380 error = nfsm_loadattr(nd, dnap); 1381 if (error != 0) 1382 goto nfsmout; 1383 *dattrflagp = 1; 1384 /* Skip over the Lookup and GetFH operation status values. */ 1385 NFSM_DISSECT(tl, u_int32_t *, 4 * NFSX_UNSIGNED); 1386 } 1387 error = nfsm_getfh(nd, nfhpp); 1388 if (error) 1389 goto nfsmout; 1390 1391 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 1392 if ((nd->nd_flag & ND_NFSV3) && !error) 1393 error = nfscl_postop_attr(nd, dnap, dattrflagp, stuff); 1394 nfsmout: 1395 mbuf_freem(nd->nd_mrep); 1396 if (!error && nd->nd_repstat) 1397 error = nd->nd_repstat; 1398 return (error); 1399 } 1400 1401 /* 1402 * Do a readlink rpc. 1403 */ 1404 APPLESTATIC int 1405 nfsrpc_readlink(vnode_t vp, struct uio *uiop, struct ucred *cred, 1406 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff) 1407 { 1408 u_int32_t *tl; 1409 struct nfsrv_descript nfsd, *nd = &nfsd; 1410 struct nfsnode *np = VTONFS(vp); 1411 nfsattrbit_t attrbits; 1412 int error, len, cangetattr = 1; 1413 1414 *attrflagp = 0; 1415 NFSCL_REQSTART(nd, NFSPROC_READLINK, vp); 1416 if (nd->nd_flag & ND_NFSV4) { 1417 /* 1418 * And do a Getattr op. 1419 */ 1420 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1421 *tl = txdr_unsigned(NFSV4OP_GETATTR); 1422 NFSGETATTR_ATTRBIT(&attrbits); 1423 (void) nfsrv_putattrbit(nd, &attrbits); 1424 } 1425 error = nfscl_request(nd, vp, p, cred, stuff); 1426 if (error) 1427 return (error); 1428 if (nd->nd_flag & ND_NFSV3) 1429 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 1430 if (!nd->nd_repstat && !error) { 1431 NFSM_STRSIZ(len, NFS_MAXPATHLEN); 1432 /* 1433 * This seems weird to me, but must have been added to 1434 * FreeBSD for some reason. The only thing I can think of 1435 * is that there was/is some server that replies with 1436 * more link data than it should? 1437 */ 1438 if (len == NFS_MAXPATHLEN) { 1439 NFSLOCKNODE(np); 1440 if (np->n_size > 0 && np->n_size < NFS_MAXPATHLEN) { 1441 len = np->n_size; 1442 cangetattr = 0; 1443 } 1444 NFSUNLOCKNODE(np); 1445 } 1446 error = nfsm_mbufuio(nd, uiop, len); 1447 if ((nd->nd_flag & ND_NFSV4) && !error && cangetattr) 1448 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 1449 } 1450 if (nd->nd_repstat && !error) 1451 error = nd->nd_repstat; 1452 nfsmout: 1453 mbuf_freem(nd->nd_mrep); 1454 return (error); 1455 } 1456 1457 /* 1458 * Read operation. 1459 */ 1460 APPLESTATIC int 1461 nfsrpc_read(vnode_t vp, struct uio *uiop, struct ucred *cred, 1462 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff) 1463 { 1464 int error, expireret = 0, retrycnt; 1465 u_int32_t clidrev = 0; 1466 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 1467 struct nfsnode *np = VTONFS(vp); 1468 struct ucred *newcred; 1469 struct nfsfh *nfhp = NULL; 1470 nfsv4stateid_t stateid; 1471 void *lckp; 1472 1473 if (nmp->nm_clp != NULL) 1474 clidrev = nmp->nm_clp->nfsc_clientidrev; 1475 newcred = cred; 1476 if (NFSHASNFSV4(nmp)) { 1477 nfhp = np->n_fhp; 1478 newcred = NFSNEWCRED(cred); 1479 } 1480 retrycnt = 0; 1481 do { 1482 lckp = NULL; 1483 if (NFSHASNFSV4(nmp)) 1484 (void)nfscl_getstateid(vp, nfhp->nfh_fh, nfhp->nfh_len, 1485 NFSV4OPEN_ACCESSREAD, 0, newcred, p, &stateid, 1486 &lckp); 1487 error = nfsrpc_readrpc(vp, uiop, newcred, &stateid, p, nap, 1488 attrflagp, stuff); 1489 if (error == NFSERR_OPENMODE) { 1490 NFSLOCKMNT(nmp); 1491 nmp->nm_state |= NFSSTA_OPENMODE; 1492 NFSUNLOCKMNT(nmp); 1493 } 1494 if (error == NFSERR_STALESTATEID) 1495 nfscl_initiate_recovery(nmp->nm_clp); 1496 if (lckp != NULL) 1497 nfscl_lockderef(lckp); 1498 if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 1499 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 1500 error == NFSERR_OLDSTATEID || error == NFSERR_BADSESSION) { 1501 (void) nfs_catnap(PZERO, error, "nfs_read"); 1502 } else if ((error == NFSERR_EXPIRED || 1503 error == NFSERR_BADSTATEID) && clidrev != 0) { 1504 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p); 1505 } 1506 retrycnt++; 1507 } while (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 1508 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 1509 error == NFSERR_BADSESSION || 1510 (error == NFSERR_OLDSTATEID && retrycnt < 20) || 1511 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) && 1512 expireret == 0 && clidrev != 0 && retrycnt < 4) || 1513 (error == NFSERR_OPENMODE && retrycnt < 4)); 1514 if (error && retrycnt >= 4) 1515 error = EIO; 1516 if (NFSHASNFSV4(nmp)) 1517 NFSFREECRED(newcred); 1518 return (error); 1519 } 1520 1521 /* 1522 * The actual read RPC. 1523 */ 1524 static int 1525 nfsrpc_readrpc(vnode_t vp, struct uio *uiop, struct ucred *cred, 1526 nfsv4stateid_t *stateidp, NFSPROC_T *p, struct nfsvattr *nap, 1527 int *attrflagp, void *stuff) 1528 { 1529 u_int32_t *tl; 1530 int error = 0, len, retlen, tsiz, eof = 0; 1531 struct nfsrv_descript nfsd; 1532 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 1533 struct nfsrv_descript *nd = &nfsd; 1534 int rsize; 1535 off_t tmp_off; 1536 1537 *attrflagp = 0; 1538 tsiz = uio_uio_resid(uiop); 1539 tmp_off = uiop->uio_offset + tsiz; 1540 NFSLOCKMNT(nmp); 1541 if (tmp_off > nmp->nm_maxfilesize || tmp_off < uiop->uio_offset) { 1542 NFSUNLOCKMNT(nmp); 1543 return (EFBIG); 1544 } 1545 rsize = nmp->nm_rsize; 1546 NFSUNLOCKMNT(nmp); 1547 nd->nd_mrep = NULL; 1548 while (tsiz > 0) { 1549 *attrflagp = 0; 1550 len = (tsiz > rsize) ? rsize : tsiz; 1551 NFSCL_REQSTART(nd, NFSPROC_READ, vp); 1552 if (nd->nd_flag & ND_NFSV4) 1553 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID); 1554 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED * 3); 1555 if (nd->nd_flag & ND_NFSV2) { 1556 *tl++ = txdr_unsigned(uiop->uio_offset); 1557 *tl++ = txdr_unsigned(len); 1558 *tl = 0; 1559 } else { 1560 txdr_hyper(uiop->uio_offset, tl); 1561 *(tl + 2) = txdr_unsigned(len); 1562 } 1563 /* 1564 * Since I can't do a Getattr for NFSv4 for Write, there 1565 * doesn't seem any point in doing one here, either. 1566 * (See the comment in nfsrpc_writerpc() for more info.) 1567 */ 1568 error = nfscl_request(nd, vp, p, cred, stuff); 1569 if (error) 1570 return (error); 1571 if (nd->nd_flag & ND_NFSV3) { 1572 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 1573 } else if (!nd->nd_repstat && (nd->nd_flag & ND_NFSV2)) { 1574 error = nfsm_loadattr(nd, nap); 1575 if (!error) 1576 *attrflagp = 1; 1577 } 1578 if (nd->nd_repstat || error) { 1579 if (!error) 1580 error = nd->nd_repstat; 1581 goto nfsmout; 1582 } 1583 if (nd->nd_flag & ND_NFSV3) { 1584 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1585 eof = fxdr_unsigned(int, *(tl + 1)); 1586 } else if (nd->nd_flag & ND_NFSV4) { 1587 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 1588 eof = fxdr_unsigned(int, *tl); 1589 } 1590 NFSM_STRSIZ(retlen, len); 1591 error = nfsm_mbufuio(nd, uiop, retlen); 1592 if (error) 1593 goto nfsmout; 1594 mbuf_freem(nd->nd_mrep); 1595 nd->nd_mrep = NULL; 1596 tsiz -= retlen; 1597 if (!(nd->nd_flag & ND_NFSV2)) { 1598 if (eof || retlen == 0) 1599 tsiz = 0; 1600 } else if (retlen < len) 1601 tsiz = 0; 1602 } 1603 return (0); 1604 nfsmout: 1605 if (nd->nd_mrep != NULL) 1606 mbuf_freem(nd->nd_mrep); 1607 return (error); 1608 } 1609 1610 /* 1611 * nfs write operation 1612 * When called_from_strategy != 0, it should return EIO for an error that 1613 * indicates recovery is in progress, so that the buffer will be left 1614 * dirty and be written back to the server later. If it loops around, 1615 * the recovery thread could get stuck waiting for the buffer and recovery 1616 * will then deadlock. 1617 */ 1618 APPLESTATIC int 1619 nfsrpc_write(vnode_t vp, struct uio *uiop, int *iomode, int *must_commit, 1620 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, 1621 void *stuff, int called_from_strategy) 1622 { 1623 int error, expireret = 0, retrycnt, nostateid; 1624 u_int32_t clidrev = 0; 1625 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 1626 struct nfsnode *np = VTONFS(vp); 1627 struct ucred *newcred; 1628 struct nfsfh *nfhp = NULL; 1629 nfsv4stateid_t stateid; 1630 void *lckp; 1631 1632 *must_commit = 0; 1633 if (nmp->nm_clp != NULL) 1634 clidrev = nmp->nm_clp->nfsc_clientidrev; 1635 newcred = cred; 1636 if (NFSHASNFSV4(nmp)) { 1637 newcred = NFSNEWCRED(cred); 1638 nfhp = np->n_fhp; 1639 } 1640 retrycnt = 0; 1641 do { 1642 lckp = NULL; 1643 nostateid = 0; 1644 if (NFSHASNFSV4(nmp)) { 1645 (void)nfscl_getstateid(vp, nfhp->nfh_fh, nfhp->nfh_len, 1646 NFSV4OPEN_ACCESSWRITE, 0, newcred, p, &stateid, 1647 &lckp); 1648 if (stateid.other[0] == 0 && stateid.other[1] == 0 && 1649 stateid.other[2] == 0) { 1650 nostateid = 1; 1651 NFSCL_DEBUG(1, "stateid0 in write\n"); 1652 } 1653 } 1654 1655 /* 1656 * If there is no stateid for NFSv4, it means this is an 1657 * extraneous write after close. Basically a poorly 1658 * implemented buffer cache. Just don't do the write. 1659 */ 1660 if (nostateid) 1661 error = 0; 1662 else 1663 error = nfsrpc_writerpc(vp, uiop, iomode, must_commit, 1664 newcred, &stateid, p, nap, attrflagp, stuff); 1665 if (error == NFSERR_STALESTATEID) 1666 nfscl_initiate_recovery(nmp->nm_clp); 1667 if (lckp != NULL) 1668 nfscl_lockderef(lckp); 1669 if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 1670 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 1671 error == NFSERR_OLDSTATEID || error == NFSERR_BADSESSION) { 1672 (void) nfs_catnap(PZERO, error, "nfs_write"); 1673 } else if ((error == NFSERR_EXPIRED || 1674 error == NFSERR_BADSTATEID) && clidrev != 0) { 1675 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p); 1676 } 1677 retrycnt++; 1678 } while (error == NFSERR_GRACE || error == NFSERR_DELAY || 1679 ((error == NFSERR_STALESTATEID || error == NFSERR_BADSESSION || 1680 error == NFSERR_STALEDONTRECOVER) && called_from_strategy == 0) || 1681 (error == NFSERR_OLDSTATEID && retrycnt < 20) || 1682 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) && 1683 expireret == 0 && clidrev != 0 && retrycnt < 4)); 1684 if (error != 0 && (retrycnt >= 4 || 1685 ((error == NFSERR_STALESTATEID || error == NFSERR_BADSESSION || 1686 error == NFSERR_STALEDONTRECOVER) && called_from_strategy != 0))) 1687 error = EIO; 1688 if (NFSHASNFSV4(nmp)) 1689 NFSFREECRED(newcred); 1690 return (error); 1691 } 1692 1693 /* 1694 * The actual write RPC. 1695 */ 1696 static int 1697 nfsrpc_writerpc(vnode_t vp, struct uio *uiop, int *iomode, 1698 int *must_commit, struct ucred *cred, nfsv4stateid_t *stateidp, 1699 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff) 1700 { 1701 u_int32_t *tl; 1702 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 1703 struct nfsnode *np = VTONFS(vp); 1704 int error = 0, len, tsiz, rlen, commit, committed = NFSWRITE_FILESYNC; 1705 int wccflag = 0, wsize; 1706 int32_t backup; 1707 struct nfsrv_descript nfsd; 1708 struct nfsrv_descript *nd = &nfsd; 1709 nfsattrbit_t attrbits; 1710 off_t tmp_off; 1711 1712 KASSERT(uiop->uio_iovcnt == 1, ("nfs: writerpc iovcnt > 1")); 1713 *attrflagp = 0; 1714 tsiz = uio_uio_resid(uiop); 1715 tmp_off = uiop->uio_offset + tsiz; 1716 NFSLOCKMNT(nmp); 1717 if (tmp_off > nmp->nm_maxfilesize || tmp_off < uiop->uio_offset) { 1718 NFSUNLOCKMNT(nmp); 1719 return (EFBIG); 1720 } 1721 wsize = nmp->nm_wsize; 1722 NFSUNLOCKMNT(nmp); 1723 nd->nd_mrep = NULL; /* NFSv2 sometimes does a write with */ 1724 nd->nd_repstat = 0; /* uio_resid == 0, so the while is not done */ 1725 while (tsiz > 0) { 1726 *attrflagp = 0; 1727 len = (tsiz > wsize) ? wsize : tsiz; 1728 NFSCL_REQSTART(nd, NFSPROC_WRITE, vp); 1729 if (nd->nd_flag & ND_NFSV4) { 1730 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID); 1731 NFSM_BUILD(tl, u_int32_t *, NFSX_HYPER+2*NFSX_UNSIGNED); 1732 txdr_hyper(uiop->uio_offset, tl); 1733 tl += 2; 1734 *tl++ = txdr_unsigned(*iomode); 1735 *tl = txdr_unsigned(len); 1736 } else if (nd->nd_flag & ND_NFSV3) { 1737 NFSM_BUILD(tl, u_int32_t *, NFSX_HYPER+3*NFSX_UNSIGNED); 1738 txdr_hyper(uiop->uio_offset, tl); 1739 tl += 2; 1740 *tl++ = txdr_unsigned(len); 1741 *tl++ = txdr_unsigned(*iomode); 1742 *tl = txdr_unsigned(len); 1743 } else { 1744 u_int32_t x; 1745 1746 NFSM_BUILD(tl, u_int32_t *, 4 * NFSX_UNSIGNED); 1747 /* 1748 * Not sure why someone changed this, since the 1749 * RFC clearly states that "beginoffset" and 1750 * "totalcount" are ignored, but it wouldn't 1751 * surprise me if there's a busted server out there. 1752 */ 1753 /* Set both "begin" and "current" to non-garbage. */ 1754 x = txdr_unsigned((u_int32_t)uiop->uio_offset); 1755 *tl++ = x; /* "begin offset" */ 1756 *tl++ = x; /* "current offset" */ 1757 x = txdr_unsigned(len); 1758 *tl++ = x; /* total to this offset */ 1759 *tl = x; /* size of this write */ 1760 1761 } 1762 nfsm_uiombuf(nd, uiop, len); 1763 /* 1764 * Although it is tempting to do a normal Getattr Op in the 1765 * NFSv4 compound, the result can be a nearly hung client 1766 * system if the Getattr asks for Owner and/or OwnerGroup. 1767 * It occurs when the client can't map either the Owner or 1768 * Owner_group name in the Getattr reply to a uid/gid. When 1769 * there is a cache miss, the kernel does an upcall to the 1770 * nfsuserd. Then, it can try and read the local /etc/passwd 1771 * or /etc/group file. It can then block in getnewbuf(), 1772 * waiting for dirty writes to be pushed to the NFS server. 1773 * The only reason this doesn't result in a complete 1774 * deadlock, is that the upcall times out and allows 1775 * the write to complete. However, progress is so slow 1776 * that it might just as well be deadlocked. 1777 * As such, we get the rest of the attributes, but not 1778 * Owner or Owner_group. 1779 * nb: nfscl_loadattrcache() needs to be told that these 1780 * partial attributes from a write rpc are being 1781 * passed in, via a argument flag. 1782 */ 1783 if (nd->nd_flag & ND_NFSV4) { 1784 NFSWRITEGETATTR_ATTRBIT(&attrbits); 1785 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1786 *tl = txdr_unsigned(NFSV4OP_GETATTR); 1787 (void) nfsrv_putattrbit(nd, &attrbits); 1788 } 1789 error = nfscl_request(nd, vp, p, cred, stuff); 1790 if (error) 1791 return (error); 1792 if (nd->nd_repstat) { 1793 /* 1794 * In case the rpc gets retried, roll 1795 * the uio fileds changed by nfsm_uiombuf() 1796 * back. 1797 */ 1798 uiop->uio_offset -= len; 1799 uio_uio_resid_add(uiop, len); 1800 uio_iov_base_add(uiop, -len); 1801 uio_iov_len_add(uiop, len); 1802 } 1803 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) { 1804 error = nfscl_wcc_data(nd, vp, nap, attrflagp, 1805 &wccflag, stuff); 1806 if (error) 1807 goto nfsmout; 1808 } 1809 if (!nd->nd_repstat) { 1810 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) { 1811 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED 1812 + NFSX_VERF); 1813 rlen = fxdr_unsigned(int, *tl++); 1814 if (rlen == 0) { 1815 error = NFSERR_IO; 1816 goto nfsmout; 1817 } else if (rlen < len) { 1818 backup = len - rlen; 1819 uio_iov_base_add(uiop, -(backup)); 1820 uio_iov_len_add(uiop, backup); 1821 uiop->uio_offset -= backup; 1822 uio_uio_resid_add(uiop, backup); 1823 len = rlen; 1824 } 1825 commit = fxdr_unsigned(int, *tl++); 1826 1827 /* 1828 * Return the lowest commitment level 1829 * obtained by any of the RPCs. 1830 */ 1831 if (committed == NFSWRITE_FILESYNC) 1832 committed = commit; 1833 else if (committed == NFSWRITE_DATASYNC && 1834 commit == NFSWRITE_UNSTABLE) 1835 committed = commit; 1836 NFSLOCKMNT(nmp); 1837 if (!NFSHASWRITEVERF(nmp)) { 1838 NFSBCOPY((caddr_t)tl, 1839 (caddr_t)&nmp->nm_verf[0], 1840 NFSX_VERF); 1841 NFSSETWRITEVERF(nmp); 1842 } else if (NFSBCMP(tl, nmp->nm_verf, 1843 NFSX_VERF)) { 1844 *must_commit = 1; 1845 NFSBCOPY(tl, nmp->nm_verf, NFSX_VERF); 1846 } 1847 NFSUNLOCKMNT(nmp); 1848 } 1849 if (nd->nd_flag & ND_NFSV4) 1850 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1851 if (nd->nd_flag & (ND_NFSV2 | ND_NFSV4)) { 1852 error = nfsm_loadattr(nd, nap); 1853 if (!error) 1854 *attrflagp = NFS_LATTR_NOSHRINK; 1855 } 1856 } else { 1857 error = nd->nd_repstat; 1858 } 1859 if (error) 1860 goto nfsmout; 1861 NFSWRITERPC_SETTIME(wccflag, np, nap, (nd->nd_flag & ND_NFSV4)); 1862 mbuf_freem(nd->nd_mrep); 1863 nd->nd_mrep = NULL; 1864 tsiz -= len; 1865 } 1866 nfsmout: 1867 if (nd->nd_mrep != NULL) 1868 mbuf_freem(nd->nd_mrep); 1869 *iomode = committed; 1870 if (nd->nd_repstat && !error) 1871 error = nd->nd_repstat; 1872 return (error); 1873 } 1874 1875 /* 1876 * nfs mknod rpc 1877 * For NFS v2 this is a kludge. Use a create rpc but with the IFMT bits of the 1878 * mode set to specify the file type and the size field for rdev. 1879 */ 1880 APPLESTATIC int 1881 nfsrpc_mknod(vnode_t dvp, char *name, int namelen, struct vattr *vap, 1882 u_int32_t rdev, enum vtype vtyp, struct ucred *cred, NFSPROC_T *p, 1883 struct nfsvattr *dnap, struct nfsvattr *nnap, struct nfsfh **nfhpp, 1884 int *attrflagp, int *dattrflagp, void *dstuff) 1885 { 1886 u_int32_t *tl; 1887 int error = 0; 1888 struct nfsrv_descript nfsd, *nd = &nfsd; 1889 nfsattrbit_t attrbits; 1890 1891 *nfhpp = NULL; 1892 *attrflagp = 0; 1893 *dattrflagp = 0; 1894 if (namelen > NFS_MAXNAMLEN) 1895 return (ENAMETOOLONG); 1896 NFSCL_REQSTART(nd, NFSPROC_MKNOD, dvp); 1897 if (nd->nd_flag & ND_NFSV4) { 1898 if (vtyp == VBLK || vtyp == VCHR) { 1899 NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 1900 *tl++ = vtonfsv34_type(vtyp); 1901 *tl++ = txdr_unsigned(NFSMAJOR(rdev)); 1902 *tl = txdr_unsigned(NFSMINOR(rdev)); 1903 } else { 1904 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1905 *tl = vtonfsv34_type(vtyp); 1906 } 1907 } 1908 (void) nfsm_strtom(nd, name, namelen); 1909 if (nd->nd_flag & ND_NFSV3) { 1910 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1911 *tl = vtonfsv34_type(vtyp); 1912 } 1913 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) 1914 nfscl_fillsattr(nd, vap, dvp, 0, 0); 1915 if ((nd->nd_flag & ND_NFSV3) && 1916 (vtyp == VCHR || vtyp == VBLK)) { 1917 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1918 *tl++ = txdr_unsigned(NFSMAJOR(rdev)); 1919 *tl = txdr_unsigned(NFSMINOR(rdev)); 1920 } 1921 if (nd->nd_flag & ND_NFSV4) { 1922 NFSGETATTR_ATTRBIT(&attrbits); 1923 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1924 *tl++ = txdr_unsigned(NFSV4OP_GETFH); 1925 *tl = txdr_unsigned(NFSV4OP_GETATTR); 1926 (void) nfsrv_putattrbit(nd, &attrbits); 1927 } 1928 if (nd->nd_flag & ND_NFSV2) 1929 nfscl_fillsattr(nd, vap, dvp, NFSSATTR_SIZERDEV, rdev); 1930 error = nfscl_request(nd, dvp, p, cred, dstuff); 1931 if (error) 1932 return (error); 1933 if (nd->nd_flag & ND_NFSV4) 1934 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 1935 if (!nd->nd_repstat) { 1936 if (nd->nd_flag & ND_NFSV4) { 1937 NFSM_DISSECT(tl, u_int32_t *, 5 * NFSX_UNSIGNED); 1938 error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL); 1939 if (error) 1940 goto nfsmout; 1941 } 1942 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp); 1943 if (error) 1944 goto nfsmout; 1945 } 1946 if (nd->nd_flag & ND_NFSV3) 1947 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 1948 if (!error && nd->nd_repstat) 1949 error = nd->nd_repstat; 1950 nfsmout: 1951 mbuf_freem(nd->nd_mrep); 1952 return (error); 1953 } 1954 1955 /* 1956 * nfs file create call 1957 * Mostly just call the approriate routine. (I separated out v4, so that 1958 * error recovery wouldn't be as difficult.) 1959 */ 1960 APPLESTATIC int 1961 nfsrpc_create(vnode_t dvp, char *name, int namelen, struct vattr *vap, 1962 nfsquad_t cverf, int fmode, struct ucred *cred, NFSPROC_T *p, 1963 struct nfsvattr *dnap, struct nfsvattr *nnap, struct nfsfh **nfhpp, 1964 int *attrflagp, int *dattrflagp, void *dstuff) 1965 { 1966 int error = 0, newone, expireret = 0, retrycnt, unlocked; 1967 struct nfsclowner *owp; 1968 struct nfscldeleg *dp; 1969 struct nfsmount *nmp = VFSTONFS(vnode_mount(dvp)); 1970 u_int32_t clidrev; 1971 1972 if (NFSHASNFSV4(nmp)) { 1973 retrycnt = 0; 1974 do { 1975 dp = NULL; 1976 error = nfscl_open(dvp, NULL, 0, (NFSV4OPEN_ACCESSWRITE | 1977 NFSV4OPEN_ACCESSREAD), 0, cred, p, &owp, NULL, &newone, 1978 NULL, 1); 1979 if (error) 1980 return (error); 1981 if (nmp->nm_clp != NULL) 1982 clidrev = nmp->nm_clp->nfsc_clientidrev; 1983 else 1984 clidrev = 0; 1985 if (!NFSHASPNFS(nmp) || nfscl_enablecallb == 0 || 1986 nfs_numnfscbd == 0 || retrycnt > 0) 1987 error = nfsrpc_createv4(dvp, name, namelen, vap, cverf, 1988 fmode, owp, &dp, cred, p, dnap, nnap, nfhpp, 1989 attrflagp, dattrflagp, dstuff, &unlocked); 1990 else 1991 error = nfsrpc_getcreatelayout(dvp, name, namelen, vap, 1992 cverf, fmode, owp, &dp, cred, p, dnap, nnap, nfhpp, 1993 attrflagp, dattrflagp, dstuff, &unlocked); 1994 /* 1995 * There is no need to invalidate cached attributes here, 1996 * since new post-delegation issue attributes are always 1997 * returned by nfsrpc_createv4() and these will update the 1998 * attribute cache. 1999 */ 2000 if (dp != NULL) 2001 (void) nfscl_deleg(nmp->nm_mountp, owp->nfsow_clp, 2002 (*nfhpp)->nfh_fh, (*nfhpp)->nfh_len, cred, p, &dp); 2003 nfscl_ownerrelease(nmp, owp, error, newone, unlocked); 2004 if (error == NFSERR_GRACE || error == NFSERR_STALECLIENTID || 2005 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 2006 error == NFSERR_BADSESSION) { 2007 (void) nfs_catnap(PZERO, error, "nfs_open"); 2008 } else if ((error == NFSERR_EXPIRED || 2009 error == NFSERR_BADSTATEID) && clidrev != 0) { 2010 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p); 2011 retrycnt++; 2012 } 2013 } while (error == NFSERR_GRACE || error == NFSERR_STALECLIENTID || 2014 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 2015 error == NFSERR_BADSESSION || 2016 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) && 2017 expireret == 0 && clidrev != 0 && retrycnt < 4)); 2018 if (error && retrycnt >= 4) 2019 error = EIO; 2020 } else { 2021 error = nfsrpc_createv23(dvp, name, namelen, vap, cverf, 2022 fmode, cred, p, dnap, nnap, nfhpp, attrflagp, dattrflagp, 2023 dstuff); 2024 } 2025 return (error); 2026 } 2027 2028 /* 2029 * The create rpc for v2 and 3. 2030 */ 2031 static int 2032 nfsrpc_createv23(vnode_t dvp, char *name, int namelen, struct vattr *vap, 2033 nfsquad_t cverf, int fmode, struct ucred *cred, NFSPROC_T *p, 2034 struct nfsvattr *dnap, struct nfsvattr *nnap, struct nfsfh **nfhpp, 2035 int *attrflagp, int *dattrflagp, void *dstuff) 2036 { 2037 u_int32_t *tl; 2038 int error = 0; 2039 struct nfsrv_descript nfsd, *nd = &nfsd; 2040 2041 *nfhpp = NULL; 2042 *attrflagp = 0; 2043 *dattrflagp = 0; 2044 if (namelen > NFS_MAXNAMLEN) 2045 return (ENAMETOOLONG); 2046 NFSCL_REQSTART(nd, NFSPROC_CREATE, dvp); 2047 (void) nfsm_strtom(nd, name, namelen); 2048 if (nd->nd_flag & ND_NFSV3) { 2049 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2050 if (fmode & O_EXCL) { 2051 *tl = txdr_unsigned(NFSCREATE_EXCLUSIVE); 2052 NFSM_BUILD(tl, u_int32_t *, NFSX_VERF); 2053 *tl++ = cverf.lval[0]; 2054 *tl = cverf.lval[1]; 2055 } else { 2056 *tl = txdr_unsigned(NFSCREATE_UNCHECKED); 2057 nfscl_fillsattr(nd, vap, dvp, 0, 0); 2058 } 2059 } else { 2060 nfscl_fillsattr(nd, vap, dvp, NFSSATTR_SIZE0, 0); 2061 } 2062 error = nfscl_request(nd, dvp, p, cred, dstuff); 2063 if (error) 2064 return (error); 2065 if (nd->nd_repstat == 0) { 2066 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp); 2067 if (error) 2068 goto nfsmout; 2069 } 2070 if (nd->nd_flag & ND_NFSV3) 2071 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 2072 if (nd->nd_repstat != 0 && error == 0) 2073 error = nd->nd_repstat; 2074 nfsmout: 2075 mbuf_freem(nd->nd_mrep); 2076 return (error); 2077 } 2078 2079 static int 2080 nfsrpc_createv4(vnode_t dvp, char *name, int namelen, struct vattr *vap, 2081 nfsquad_t cverf, int fmode, struct nfsclowner *owp, struct nfscldeleg **dpp, 2082 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap, 2083 struct nfsvattr *nnap, struct nfsfh **nfhpp, int *attrflagp, 2084 int *dattrflagp, void *dstuff, int *unlockedp) 2085 { 2086 u_int32_t *tl; 2087 int error = 0, deleg, newone, ret, acesize, limitby; 2088 struct nfsrv_descript nfsd, *nd = &nfsd; 2089 struct nfsclopen *op; 2090 struct nfscldeleg *dp = NULL; 2091 struct nfsnode *np; 2092 struct nfsfh *nfhp; 2093 nfsattrbit_t attrbits; 2094 nfsv4stateid_t stateid; 2095 u_int32_t rflags; 2096 struct nfsmount *nmp; 2097 struct nfsclsession *tsep; 2098 2099 nmp = VFSTONFS(dvp->v_mount); 2100 np = VTONFS(dvp); 2101 *unlockedp = 0; 2102 *nfhpp = NULL; 2103 *dpp = NULL; 2104 *attrflagp = 0; 2105 *dattrflagp = 0; 2106 if (namelen > NFS_MAXNAMLEN) 2107 return (ENAMETOOLONG); 2108 NFSCL_REQSTART(nd, NFSPROC_CREATE, dvp); 2109 /* 2110 * For V4, this is actually an Open op. 2111 */ 2112 NFSM_BUILD(tl, u_int32_t *, 5 * NFSX_UNSIGNED); 2113 *tl++ = txdr_unsigned(owp->nfsow_seqid); 2114 *tl++ = txdr_unsigned(NFSV4OPEN_ACCESSWRITE | 2115 NFSV4OPEN_ACCESSREAD); 2116 *tl++ = txdr_unsigned(NFSV4OPEN_DENYNONE); 2117 tsep = nfsmnt_mdssession(nmp); 2118 *tl++ = tsep->nfsess_clientid.lval[0]; 2119 *tl = tsep->nfsess_clientid.lval[1]; 2120 (void) nfsm_strtom(nd, owp->nfsow_owner, NFSV4CL_LOCKNAMELEN); 2121 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2122 *tl++ = txdr_unsigned(NFSV4OPEN_CREATE); 2123 if (fmode & O_EXCL) { 2124 if (NFSHASNFSV4N(nmp)) { 2125 if (NFSHASSESSPERSIST(nmp)) { 2126 /* Use GUARDED for persistent sessions. */ 2127 *tl = txdr_unsigned(NFSCREATE_GUARDED); 2128 nfscl_fillsattr(nd, vap, dvp, 0, 0); 2129 } else { 2130 /* Otherwise, use EXCLUSIVE4_1. */ 2131 *tl = txdr_unsigned(NFSCREATE_EXCLUSIVE41); 2132 NFSM_BUILD(tl, u_int32_t *, NFSX_VERF); 2133 *tl++ = cverf.lval[0]; 2134 *tl = cverf.lval[1]; 2135 nfscl_fillsattr(nd, vap, dvp, 0, 0); 2136 } 2137 } else { 2138 /* NFSv4.0 */ 2139 *tl = txdr_unsigned(NFSCREATE_EXCLUSIVE); 2140 NFSM_BUILD(tl, u_int32_t *, NFSX_VERF); 2141 *tl++ = cverf.lval[0]; 2142 *tl = cverf.lval[1]; 2143 } 2144 } else { 2145 *tl = txdr_unsigned(NFSCREATE_UNCHECKED); 2146 nfscl_fillsattr(nd, vap, dvp, 0, 0); 2147 } 2148 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2149 *tl = txdr_unsigned(NFSV4OPEN_CLAIMNULL); 2150 (void) nfsm_strtom(nd, name, namelen); 2151 /* Get the new file's handle and attributes. */ 2152 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2153 *tl++ = txdr_unsigned(NFSV4OP_GETFH); 2154 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2155 NFSGETATTR_ATTRBIT(&attrbits); 2156 (void) nfsrv_putattrbit(nd, &attrbits); 2157 /* Get the directory's post-op attributes. */ 2158 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2159 *tl = txdr_unsigned(NFSV4OP_PUTFH); 2160 (void) nfsm_fhtom(nd, np->n_fhp->nfh_fh, np->n_fhp->nfh_len, 0); 2161 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2162 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2163 (void) nfsrv_putattrbit(nd, &attrbits); 2164 error = nfscl_request(nd, dvp, p, cred, dstuff); 2165 if (error) 2166 return (error); 2167 NFSCL_INCRSEQID(owp->nfsow_seqid, nd); 2168 if (nd->nd_repstat == 0) { 2169 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID + 2170 6 * NFSX_UNSIGNED); 2171 stateid.seqid = *tl++; 2172 stateid.other[0] = *tl++; 2173 stateid.other[1] = *tl++; 2174 stateid.other[2] = *tl; 2175 rflags = fxdr_unsigned(u_int32_t, *(tl + 6)); 2176 (void) nfsrv_getattrbits(nd, &attrbits, NULL, NULL); 2177 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2178 deleg = fxdr_unsigned(int, *tl); 2179 if (deleg == NFSV4OPEN_DELEGATEREAD || 2180 deleg == NFSV4OPEN_DELEGATEWRITE) { 2181 if (!(owp->nfsow_clp->nfsc_flags & 2182 NFSCLFLAGS_FIRSTDELEG)) 2183 owp->nfsow_clp->nfsc_flags |= 2184 (NFSCLFLAGS_FIRSTDELEG | NFSCLFLAGS_GOTDELEG); 2185 dp = malloc( 2186 sizeof (struct nfscldeleg) + NFSX_V4FHMAX, 2187 M_NFSCLDELEG, M_WAITOK); 2188 LIST_INIT(&dp->nfsdl_owner); 2189 LIST_INIT(&dp->nfsdl_lock); 2190 dp->nfsdl_clp = owp->nfsow_clp; 2191 newnfs_copyincred(cred, &dp->nfsdl_cred); 2192 nfscl_lockinit(&dp->nfsdl_rwlock); 2193 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID + 2194 NFSX_UNSIGNED); 2195 dp->nfsdl_stateid.seqid = *tl++; 2196 dp->nfsdl_stateid.other[0] = *tl++; 2197 dp->nfsdl_stateid.other[1] = *tl++; 2198 dp->nfsdl_stateid.other[2] = *tl++; 2199 ret = fxdr_unsigned(int, *tl); 2200 if (deleg == NFSV4OPEN_DELEGATEWRITE) { 2201 dp->nfsdl_flags = NFSCLDL_WRITE; 2202 /* 2203 * Indicates how much the file can grow. 2204 */ 2205 NFSM_DISSECT(tl, u_int32_t *, 2206 3 * NFSX_UNSIGNED); 2207 limitby = fxdr_unsigned(int, *tl++); 2208 switch (limitby) { 2209 case NFSV4OPEN_LIMITSIZE: 2210 dp->nfsdl_sizelimit = fxdr_hyper(tl); 2211 break; 2212 case NFSV4OPEN_LIMITBLOCKS: 2213 dp->nfsdl_sizelimit = 2214 fxdr_unsigned(u_int64_t, *tl++); 2215 dp->nfsdl_sizelimit *= 2216 fxdr_unsigned(u_int64_t, *tl); 2217 break; 2218 default: 2219 error = NFSERR_BADXDR; 2220 goto nfsmout; 2221 } 2222 } else { 2223 dp->nfsdl_flags = NFSCLDL_READ; 2224 } 2225 if (ret) 2226 dp->nfsdl_flags |= NFSCLDL_RECALL; 2227 error = nfsrv_dissectace(nd, &dp->nfsdl_ace, &ret, 2228 &acesize, p); 2229 if (error) 2230 goto nfsmout; 2231 } else if (deleg != NFSV4OPEN_DELEGATENONE) { 2232 error = NFSERR_BADXDR; 2233 goto nfsmout; 2234 } 2235 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp); 2236 if (error) 2237 goto nfsmout; 2238 /* Get rid of the PutFH and Getattr status values. */ 2239 NFSM_DISSECT(tl, u_int32_t *, 4 * NFSX_UNSIGNED); 2240 /* Load the directory attributes. */ 2241 error = nfsm_loadattr(nd, dnap); 2242 if (error) 2243 goto nfsmout; 2244 *dattrflagp = 1; 2245 if (dp != NULL && *attrflagp) { 2246 dp->nfsdl_change = nnap->na_filerev; 2247 dp->nfsdl_modtime = nnap->na_mtime; 2248 dp->nfsdl_flags |= NFSCLDL_MODTIMESET; 2249 } 2250 /* 2251 * We can now complete the Open state. 2252 */ 2253 nfhp = *nfhpp; 2254 if (dp != NULL) { 2255 dp->nfsdl_fhlen = nfhp->nfh_len; 2256 NFSBCOPY(nfhp->nfh_fh, dp->nfsdl_fh, nfhp->nfh_len); 2257 } 2258 /* 2259 * Get an Open structure that will be 2260 * attached to the OpenOwner, acquired already. 2261 */ 2262 error = nfscl_open(dvp, nfhp->nfh_fh, nfhp->nfh_len, 2263 (NFSV4OPEN_ACCESSWRITE | NFSV4OPEN_ACCESSREAD), 0, 2264 cred, p, NULL, &op, &newone, NULL, 0); 2265 if (error) 2266 goto nfsmout; 2267 op->nfso_stateid = stateid; 2268 newnfs_copyincred(cred, &op->nfso_cred); 2269 if ((rflags & NFSV4OPEN_RESULTCONFIRM)) { 2270 do { 2271 ret = nfsrpc_openconfirm(dvp, nfhp->nfh_fh, 2272 nfhp->nfh_len, op, cred, p); 2273 if (ret == NFSERR_DELAY) 2274 (void) nfs_catnap(PZERO, ret, "nfs_create"); 2275 } while (ret == NFSERR_DELAY); 2276 error = ret; 2277 } 2278 2279 /* 2280 * If the server is handing out delegations, but we didn't 2281 * get one because an OpenConfirm was required, try the 2282 * Open again, to get a delegation. This is a harmless no-op, 2283 * from a server's point of view. 2284 */ 2285 if ((rflags & NFSV4OPEN_RESULTCONFIRM) && 2286 (owp->nfsow_clp->nfsc_flags & NFSCLFLAGS_GOTDELEG) && 2287 !error && dp == NULL) { 2288 do { 2289 ret = nfsrpc_openrpc(VFSTONFS(vnode_mount(dvp)), dvp, 2290 np->n_fhp->nfh_fh, np->n_fhp->nfh_len, 2291 nfhp->nfh_fh, nfhp->nfh_len, 2292 (NFSV4OPEN_ACCESSWRITE | NFSV4OPEN_ACCESSREAD), op, 2293 name, namelen, &dp, 0, 0x0, cred, p, 0, 1); 2294 if (ret == NFSERR_DELAY) 2295 (void) nfs_catnap(PZERO, ret, "nfs_crt2"); 2296 } while (ret == NFSERR_DELAY); 2297 if (ret) { 2298 if (dp != NULL) { 2299 free(dp, M_NFSCLDELEG); 2300 dp = NULL; 2301 } 2302 if (ret == NFSERR_STALECLIENTID || 2303 ret == NFSERR_STALEDONTRECOVER || 2304 ret == NFSERR_BADSESSION) 2305 error = ret; 2306 } 2307 } 2308 nfscl_openrelease(nmp, op, error, newone); 2309 *unlockedp = 1; 2310 } 2311 if (nd->nd_repstat != 0 && error == 0) 2312 error = nd->nd_repstat; 2313 if (error == NFSERR_STALECLIENTID) 2314 nfscl_initiate_recovery(owp->nfsow_clp); 2315 nfsmout: 2316 if (!error) 2317 *dpp = dp; 2318 else if (dp != NULL) 2319 free(dp, M_NFSCLDELEG); 2320 mbuf_freem(nd->nd_mrep); 2321 return (error); 2322 } 2323 2324 /* 2325 * Nfs remove rpc 2326 */ 2327 APPLESTATIC int 2328 nfsrpc_remove(vnode_t dvp, char *name, int namelen, vnode_t vp, 2329 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap, int *dattrflagp, 2330 void *dstuff) 2331 { 2332 u_int32_t *tl; 2333 struct nfsrv_descript nfsd, *nd = &nfsd; 2334 struct nfsnode *np; 2335 struct nfsmount *nmp; 2336 nfsv4stateid_t dstateid; 2337 int error, ret = 0, i; 2338 2339 *dattrflagp = 0; 2340 if (namelen > NFS_MAXNAMLEN) 2341 return (ENAMETOOLONG); 2342 nmp = VFSTONFS(vnode_mount(dvp)); 2343 tryagain: 2344 if (NFSHASNFSV4(nmp) && ret == 0) { 2345 ret = nfscl_removedeleg(vp, p, &dstateid); 2346 if (ret == 1) { 2347 NFSCL_REQSTART(nd, NFSPROC_RETDELEGREMOVE, vp); 2348 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID + 2349 NFSX_UNSIGNED); 2350 if (NFSHASNFSV4N(nmp)) 2351 *tl++ = 0; 2352 else 2353 *tl++ = dstateid.seqid; 2354 *tl++ = dstateid.other[0]; 2355 *tl++ = dstateid.other[1]; 2356 *tl++ = dstateid.other[2]; 2357 *tl = txdr_unsigned(NFSV4OP_PUTFH); 2358 np = VTONFS(dvp); 2359 (void) nfsm_fhtom(nd, np->n_fhp->nfh_fh, 2360 np->n_fhp->nfh_len, 0); 2361 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2362 *tl = txdr_unsigned(NFSV4OP_REMOVE); 2363 } 2364 } else { 2365 ret = 0; 2366 } 2367 if (ret == 0) 2368 NFSCL_REQSTART(nd, NFSPROC_REMOVE, dvp); 2369 (void) nfsm_strtom(nd, name, namelen); 2370 error = nfscl_request(nd, dvp, p, cred, dstuff); 2371 if (error) 2372 return (error); 2373 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) { 2374 /* For NFSv4, parse out any Delereturn replies. */ 2375 if (ret > 0 && nd->nd_repstat != 0 && 2376 (nd->nd_flag & ND_NOMOREDATA)) { 2377 /* 2378 * If the Delegreturn failed, try again without 2379 * it. The server will Recall, as required. 2380 */ 2381 mbuf_freem(nd->nd_mrep); 2382 goto tryagain; 2383 } 2384 for (i = 0; i < (ret * 2); i++) { 2385 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == 2386 ND_NFSV4) { 2387 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2388 if (*(tl + 1)) 2389 nd->nd_flag |= ND_NOMOREDATA; 2390 } 2391 } 2392 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 2393 } 2394 if (nd->nd_repstat && !error) 2395 error = nd->nd_repstat; 2396 nfsmout: 2397 mbuf_freem(nd->nd_mrep); 2398 return (error); 2399 } 2400 2401 /* 2402 * Do an nfs rename rpc. 2403 */ 2404 APPLESTATIC int 2405 nfsrpc_rename(vnode_t fdvp, vnode_t fvp, char *fnameptr, int fnamelen, 2406 vnode_t tdvp, vnode_t tvp, char *tnameptr, int tnamelen, struct ucred *cred, 2407 NFSPROC_T *p, struct nfsvattr *fnap, struct nfsvattr *tnap, 2408 int *fattrflagp, int *tattrflagp, void *fstuff, void *tstuff) 2409 { 2410 u_int32_t *tl; 2411 struct nfsrv_descript nfsd, *nd = &nfsd; 2412 struct nfsmount *nmp; 2413 struct nfsnode *np; 2414 nfsattrbit_t attrbits; 2415 nfsv4stateid_t fdstateid, tdstateid; 2416 int error = 0, ret = 0, gottd = 0, gotfd = 0, i; 2417 2418 *fattrflagp = 0; 2419 *tattrflagp = 0; 2420 nmp = VFSTONFS(vnode_mount(fdvp)); 2421 if (fnamelen > NFS_MAXNAMLEN || tnamelen > NFS_MAXNAMLEN) 2422 return (ENAMETOOLONG); 2423 tryagain: 2424 if (NFSHASNFSV4(nmp) && ret == 0) { 2425 ret = nfscl_renamedeleg(fvp, &fdstateid, &gotfd, tvp, 2426 &tdstateid, &gottd, p); 2427 if (gotfd && gottd) { 2428 NFSCL_REQSTART(nd, NFSPROC_RETDELEGRENAME2, fvp); 2429 } else if (gotfd) { 2430 NFSCL_REQSTART(nd, NFSPROC_RETDELEGRENAME1, fvp); 2431 } else if (gottd) { 2432 NFSCL_REQSTART(nd, NFSPROC_RETDELEGRENAME1, tvp); 2433 } 2434 if (gotfd) { 2435 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID); 2436 if (NFSHASNFSV4N(nmp)) 2437 *tl++ = 0; 2438 else 2439 *tl++ = fdstateid.seqid; 2440 *tl++ = fdstateid.other[0]; 2441 *tl++ = fdstateid.other[1]; 2442 *tl = fdstateid.other[2]; 2443 if (gottd) { 2444 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2445 *tl = txdr_unsigned(NFSV4OP_PUTFH); 2446 np = VTONFS(tvp); 2447 (void) nfsm_fhtom(nd, np->n_fhp->nfh_fh, 2448 np->n_fhp->nfh_len, 0); 2449 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2450 *tl = txdr_unsigned(NFSV4OP_DELEGRETURN); 2451 } 2452 } 2453 if (gottd) { 2454 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID); 2455 if (NFSHASNFSV4N(nmp)) 2456 *tl++ = 0; 2457 else 2458 *tl++ = tdstateid.seqid; 2459 *tl++ = tdstateid.other[0]; 2460 *tl++ = tdstateid.other[1]; 2461 *tl = tdstateid.other[2]; 2462 } 2463 if (ret > 0) { 2464 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2465 *tl = txdr_unsigned(NFSV4OP_PUTFH); 2466 np = VTONFS(fdvp); 2467 (void) nfsm_fhtom(nd, np->n_fhp->nfh_fh, 2468 np->n_fhp->nfh_len, 0); 2469 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2470 *tl = txdr_unsigned(NFSV4OP_SAVEFH); 2471 } 2472 } else { 2473 ret = 0; 2474 } 2475 if (ret == 0) 2476 NFSCL_REQSTART(nd, NFSPROC_RENAME, fdvp); 2477 if (nd->nd_flag & ND_NFSV4) { 2478 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2479 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2480 NFSWCCATTR_ATTRBIT(&attrbits); 2481 (void) nfsrv_putattrbit(nd, &attrbits); 2482 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2483 *tl = txdr_unsigned(NFSV4OP_PUTFH); 2484 (void) nfsm_fhtom(nd, VTONFS(tdvp)->n_fhp->nfh_fh, 2485 VTONFS(tdvp)->n_fhp->nfh_len, 0); 2486 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2487 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2488 (void) nfsrv_putattrbit(nd, &attrbits); 2489 nd->nd_flag |= ND_V4WCCATTR; 2490 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2491 *tl = txdr_unsigned(NFSV4OP_RENAME); 2492 } 2493 (void) nfsm_strtom(nd, fnameptr, fnamelen); 2494 if (!(nd->nd_flag & ND_NFSV4)) 2495 (void) nfsm_fhtom(nd, VTONFS(tdvp)->n_fhp->nfh_fh, 2496 VTONFS(tdvp)->n_fhp->nfh_len, 0); 2497 (void) nfsm_strtom(nd, tnameptr, tnamelen); 2498 error = nfscl_request(nd, fdvp, p, cred, fstuff); 2499 if (error) 2500 return (error); 2501 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) { 2502 /* For NFSv4, parse out any Delereturn replies. */ 2503 if (ret > 0 && nd->nd_repstat != 0 && 2504 (nd->nd_flag & ND_NOMOREDATA)) { 2505 /* 2506 * If the Delegreturn failed, try again without 2507 * it. The server will Recall, as required. 2508 */ 2509 mbuf_freem(nd->nd_mrep); 2510 goto tryagain; 2511 } 2512 for (i = 0; i < (ret * 2); i++) { 2513 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == 2514 ND_NFSV4) { 2515 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2516 if (*(tl + 1)) { 2517 if (i == 0 && ret > 1) { 2518 /* 2519 * If the Delegreturn failed, try again 2520 * without it. The server will Recall, as 2521 * required. 2522 * If ret > 1, the first iteration of this 2523 * loop is the second DelegReturn result. 2524 */ 2525 mbuf_freem(nd->nd_mrep); 2526 goto tryagain; 2527 } else { 2528 nd->nd_flag |= ND_NOMOREDATA; 2529 } 2530 } 2531 } 2532 } 2533 /* Now, the first wcc attribute reply. */ 2534 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == ND_NFSV4) { 2535 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2536 if (*(tl + 1)) 2537 nd->nd_flag |= ND_NOMOREDATA; 2538 } 2539 error = nfscl_wcc_data(nd, fdvp, fnap, fattrflagp, NULL, 2540 fstuff); 2541 /* and the second wcc attribute reply. */ 2542 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == ND_NFSV4 && 2543 !error) { 2544 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2545 if (*(tl + 1)) 2546 nd->nd_flag |= ND_NOMOREDATA; 2547 } 2548 if (!error) 2549 error = nfscl_wcc_data(nd, tdvp, tnap, tattrflagp, 2550 NULL, tstuff); 2551 } 2552 if (nd->nd_repstat && !error) 2553 error = nd->nd_repstat; 2554 nfsmout: 2555 mbuf_freem(nd->nd_mrep); 2556 return (error); 2557 } 2558 2559 /* 2560 * nfs hard link create rpc 2561 */ 2562 APPLESTATIC int 2563 nfsrpc_link(vnode_t dvp, vnode_t vp, char *name, int namelen, 2564 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap, 2565 struct nfsvattr *nap, int *attrflagp, int *dattrflagp, void *dstuff) 2566 { 2567 u_int32_t *tl; 2568 struct nfsrv_descript nfsd, *nd = &nfsd; 2569 nfsattrbit_t attrbits; 2570 int error = 0; 2571 2572 *attrflagp = 0; 2573 *dattrflagp = 0; 2574 if (namelen > NFS_MAXNAMLEN) 2575 return (ENAMETOOLONG); 2576 NFSCL_REQSTART(nd, NFSPROC_LINK, vp); 2577 if (nd->nd_flag & ND_NFSV4) { 2578 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2579 *tl = txdr_unsigned(NFSV4OP_PUTFH); 2580 } 2581 (void) nfsm_fhtom(nd, VTONFS(dvp)->n_fhp->nfh_fh, 2582 VTONFS(dvp)->n_fhp->nfh_len, 0); 2583 if (nd->nd_flag & ND_NFSV4) { 2584 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2585 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2586 NFSWCCATTR_ATTRBIT(&attrbits); 2587 (void) nfsrv_putattrbit(nd, &attrbits); 2588 nd->nd_flag |= ND_V4WCCATTR; 2589 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2590 *tl = txdr_unsigned(NFSV4OP_LINK); 2591 } 2592 (void) nfsm_strtom(nd, name, namelen); 2593 error = nfscl_request(nd, vp, p, cred, dstuff); 2594 if (error) 2595 return (error); 2596 if (nd->nd_flag & ND_NFSV3) { 2597 error = nfscl_postop_attr(nd, nap, attrflagp, dstuff); 2598 if (!error) 2599 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, 2600 NULL, dstuff); 2601 } else if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == ND_NFSV4) { 2602 /* 2603 * First, parse out the PutFH and Getattr result. 2604 */ 2605 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2606 if (!(*(tl + 1))) 2607 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2608 if (*(tl + 1)) 2609 nd->nd_flag |= ND_NOMOREDATA; 2610 /* 2611 * Get the pre-op attributes. 2612 */ 2613 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 2614 } 2615 if (nd->nd_repstat && !error) 2616 error = nd->nd_repstat; 2617 nfsmout: 2618 mbuf_freem(nd->nd_mrep); 2619 return (error); 2620 } 2621 2622 /* 2623 * nfs symbolic link create rpc 2624 */ 2625 APPLESTATIC int 2626 nfsrpc_symlink(vnode_t dvp, char *name, int namelen, char *target, 2627 struct vattr *vap, struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap, 2628 struct nfsvattr *nnap, struct nfsfh **nfhpp, int *attrflagp, 2629 int *dattrflagp, void *dstuff) 2630 { 2631 u_int32_t *tl; 2632 struct nfsrv_descript nfsd, *nd = &nfsd; 2633 struct nfsmount *nmp; 2634 int slen, error = 0; 2635 2636 *nfhpp = NULL; 2637 *attrflagp = 0; 2638 *dattrflagp = 0; 2639 nmp = VFSTONFS(vnode_mount(dvp)); 2640 slen = strlen(target); 2641 if (slen > NFS_MAXPATHLEN || namelen > NFS_MAXNAMLEN) 2642 return (ENAMETOOLONG); 2643 NFSCL_REQSTART(nd, NFSPROC_SYMLINK, dvp); 2644 if (nd->nd_flag & ND_NFSV4) { 2645 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2646 *tl = txdr_unsigned(NFLNK); 2647 (void) nfsm_strtom(nd, target, slen); 2648 } 2649 (void) nfsm_strtom(nd, name, namelen); 2650 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) 2651 nfscl_fillsattr(nd, vap, dvp, 0, 0); 2652 if (!(nd->nd_flag & ND_NFSV4)) 2653 (void) nfsm_strtom(nd, target, slen); 2654 if (nd->nd_flag & ND_NFSV2) 2655 nfscl_fillsattr(nd, vap, dvp, NFSSATTR_SIZENEG1, 0); 2656 error = nfscl_request(nd, dvp, p, cred, dstuff); 2657 if (error) 2658 return (error); 2659 if (nd->nd_flag & ND_NFSV4) 2660 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 2661 if ((nd->nd_flag & ND_NFSV3) && !error) { 2662 if (!nd->nd_repstat) 2663 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp); 2664 if (!error) 2665 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, 2666 NULL, dstuff); 2667 } 2668 if (nd->nd_repstat && !error) 2669 error = nd->nd_repstat; 2670 mbuf_freem(nd->nd_mrep); 2671 /* 2672 * Kludge: Map EEXIST => 0 assuming that it is a reply to a retry. 2673 * Only do this if vfs.nfs.ignore_eexist is set. 2674 * Never do this for NFSv4.1 or later minor versions, since sessions 2675 * should guarantee "exactly once" RPC semantics. 2676 */ 2677 if (error == EEXIST && nfsignore_eexist != 0 && (!NFSHASNFSV4(nmp) || 2678 nmp->nm_minorvers == 0)) 2679 error = 0; 2680 return (error); 2681 } 2682 2683 /* 2684 * nfs make dir rpc 2685 */ 2686 APPLESTATIC int 2687 nfsrpc_mkdir(vnode_t dvp, char *name, int namelen, struct vattr *vap, 2688 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap, 2689 struct nfsvattr *nnap, struct nfsfh **nfhpp, int *attrflagp, 2690 int *dattrflagp, void *dstuff) 2691 { 2692 u_int32_t *tl; 2693 struct nfsrv_descript nfsd, *nd = &nfsd; 2694 nfsattrbit_t attrbits; 2695 int error = 0; 2696 struct nfsfh *fhp; 2697 struct nfsmount *nmp; 2698 2699 *nfhpp = NULL; 2700 *attrflagp = 0; 2701 *dattrflagp = 0; 2702 nmp = VFSTONFS(vnode_mount(dvp)); 2703 fhp = VTONFS(dvp)->n_fhp; 2704 if (namelen > NFS_MAXNAMLEN) 2705 return (ENAMETOOLONG); 2706 NFSCL_REQSTART(nd, NFSPROC_MKDIR, dvp); 2707 if (nd->nd_flag & ND_NFSV4) { 2708 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2709 *tl = txdr_unsigned(NFDIR); 2710 } 2711 (void) nfsm_strtom(nd, name, namelen); 2712 nfscl_fillsattr(nd, vap, dvp, NFSSATTR_SIZENEG1, 0); 2713 if (nd->nd_flag & ND_NFSV4) { 2714 NFSGETATTR_ATTRBIT(&attrbits); 2715 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2716 *tl++ = txdr_unsigned(NFSV4OP_GETFH); 2717 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2718 (void) nfsrv_putattrbit(nd, &attrbits); 2719 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2720 *tl = txdr_unsigned(NFSV4OP_PUTFH); 2721 (void) nfsm_fhtom(nd, fhp->nfh_fh, fhp->nfh_len, 0); 2722 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2723 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2724 (void) nfsrv_putattrbit(nd, &attrbits); 2725 } 2726 error = nfscl_request(nd, dvp, p, cred, dstuff); 2727 if (error) 2728 return (error); 2729 if (nd->nd_flag & ND_NFSV4) 2730 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 2731 if (!nd->nd_repstat && !error) { 2732 if (nd->nd_flag & ND_NFSV4) { 2733 NFSM_DISSECT(tl, u_int32_t *, 5 * NFSX_UNSIGNED); 2734 error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL); 2735 } 2736 if (!error) 2737 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp); 2738 if (error == 0 && (nd->nd_flag & ND_NFSV4) != 0) { 2739 /* Get rid of the PutFH and Getattr status values. */ 2740 NFSM_DISSECT(tl, u_int32_t *, 4 * NFSX_UNSIGNED); 2741 /* Load the directory attributes. */ 2742 error = nfsm_loadattr(nd, dnap); 2743 if (error == 0) 2744 *dattrflagp = 1; 2745 } 2746 } 2747 if ((nd->nd_flag & ND_NFSV3) && !error) 2748 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 2749 if (nd->nd_repstat && !error) 2750 error = nd->nd_repstat; 2751 nfsmout: 2752 mbuf_freem(nd->nd_mrep); 2753 /* 2754 * Kludge: Map EEXIST => 0 assuming that it is a reply to a retry. 2755 * Only do this if vfs.nfs.ignore_eexist is set. 2756 * Never do this for NFSv4.1 or later minor versions, since sessions 2757 * should guarantee "exactly once" RPC semantics. 2758 */ 2759 if (error == EEXIST && nfsignore_eexist != 0 && (!NFSHASNFSV4(nmp) || 2760 nmp->nm_minorvers == 0)) 2761 error = 0; 2762 return (error); 2763 } 2764 2765 /* 2766 * nfs remove directory call 2767 */ 2768 APPLESTATIC int 2769 nfsrpc_rmdir(vnode_t dvp, char *name, int namelen, struct ucred *cred, 2770 NFSPROC_T *p, struct nfsvattr *dnap, int *dattrflagp, void *dstuff) 2771 { 2772 struct nfsrv_descript nfsd, *nd = &nfsd; 2773 int error = 0; 2774 2775 *dattrflagp = 0; 2776 if (namelen > NFS_MAXNAMLEN) 2777 return (ENAMETOOLONG); 2778 NFSCL_REQSTART(nd, NFSPROC_RMDIR, dvp); 2779 (void) nfsm_strtom(nd, name, namelen); 2780 error = nfscl_request(nd, dvp, p, cred, dstuff); 2781 if (error) 2782 return (error); 2783 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) 2784 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 2785 if (nd->nd_repstat && !error) 2786 error = nd->nd_repstat; 2787 mbuf_freem(nd->nd_mrep); 2788 /* 2789 * Kludge: Map ENOENT => 0 assuming that you have a reply to a retry. 2790 */ 2791 if (error == ENOENT) 2792 error = 0; 2793 return (error); 2794 } 2795 2796 /* 2797 * Readdir rpc. 2798 * Always returns with either uio_resid unchanged, if you are at the 2799 * end of the directory, or uio_resid == 0, with all DIRBLKSIZ chunks 2800 * filled in. 2801 * I felt this would allow caching of directory blocks more easily 2802 * than returning a pertially filled block. 2803 * Directory offset cookies: 2804 * Oh my, what to do with them... 2805 * I can think of three ways to deal with them: 2806 * 1 - have the layer above these RPCs maintain a map between logical 2807 * directory byte offsets and the NFS directory offset cookies 2808 * 2 - pass the opaque directory offset cookies up into userland 2809 * and let the libc functions deal with them, via the system call 2810 * 3 - return them to userland in the "struct dirent", so future versions 2811 * of libc can use them and do whatever is necessary to make things work 2812 * above these rpc calls, in the meantime 2813 * For now, I do #3 by "hiding" the directory offset cookies after the 2814 * d_name field in struct dirent. This is space inside d_reclen that 2815 * will be ignored by anything that doesn't know about them. 2816 * The directory offset cookies are filled in as the last 8 bytes of 2817 * each directory entry, after d_name. Someday, the userland libc 2818 * functions may be able to use these. In the meantime, it satisfies 2819 * OpenBSD's requirements for cookies being returned. 2820 * If expects the directory offset cookie for the read to be in uio_offset 2821 * and returns the one for the next entry after this directory block in 2822 * there, as well. 2823 */ 2824 APPLESTATIC int 2825 nfsrpc_readdir(vnode_t vp, struct uio *uiop, nfsuint64 *cookiep, 2826 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, 2827 int *eofp, void *stuff) 2828 { 2829 int len, left; 2830 struct dirent *dp = NULL; 2831 u_int32_t *tl; 2832 nfsquad_t cookie, ncookie; 2833 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 2834 struct nfsnode *dnp = VTONFS(vp); 2835 struct nfsvattr nfsva; 2836 struct nfsrv_descript nfsd, *nd = &nfsd; 2837 int error = 0, tlen, more_dirs = 1, blksiz = 0, bigenough = 1; 2838 int reqsize, tryformoredirs = 1, readsize, eof = 0, gotmnton = 0; 2839 u_int64_t dotfileid, dotdotfileid = 0, fakefileno = UINT64_MAX; 2840 char *cp; 2841 nfsattrbit_t attrbits, dattrbits; 2842 u_int32_t rderr, *tl2 = NULL; 2843 size_t tresid; 2844 2845 KASSERT(uiop->uio_iovcnt == 1 && 2846 (uio_uio_resid(uiop) & (DIRBLKSIZ - 1)) == 0, 2847 ("nfs readdirrpc bad uio")); 2848 2849 /* 2850 * There is no point in reading a lot more than uio_resid, however 2851 * adding one additional DIRBLKSIZ makes sense. Since uio_resid 2852 * and nm_readdirsize are both exact multiples of DIRBLKSIZ, this 2853 * will never make readsize > nm_readdirsize. 2854 */ 2855 readsize = nmp->nm_readdirsize; 2856 if (readsize > uio_uio_resid(uiop)) 2857 readsize = uio_uio_resid(uiop) + DIRBLKSIZ; 2858 2859 *attrflagp = 0; 2860 if (eofp) 2861 *eofp = 0; 2862 tresid = uio_uio_resid(uiop); 2863 cookie.lval[0] = cookiep->nfsuquad[0]; 2864 cookie.lval[1] = cookiep->nfsuquad[1]; 2865 nd->nd_mrep = NULL; 2866 2867 /* 2868 * For NFSv4, first create the "." and ".." entries. 2869 */ 2870 if (NFSHASNFSV4(nmp)) { 2871 reqsize = 6 * NFSX_UNSIGNED; 2872 NFSGETATTR_ATTRBIT(&dattrbits); 2873 NFSZERO_ATTRBIT(&attrbits); 2874 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_FILEID); 2875 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_TYPE); 2876 if (NFSISSET_ATTRBIT(&dnp->n_vattr.na_suppattr, 2877 NFSATTRBIT_MOUNTEDONFILEID)) { 2878 NFSSETBIT_ATTRBIT(&attrbits, 2879 NFSATTRBIT_MOUNTEDONFILEID); 2880 gotmnton = 1; 2881 } else { 2882 /* 2883 * Must fake it. Use the fileno, except when the 2884 * fsid is != to that of the directory. For that 2885 * case, generate a fake fileno that is not the same. 2886 */ 2887 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_FSID); 2888 gotmnton = 0; 2889 } 2890 2891 /* 2892 * Joy, oh joy. For V4 we get to hand craft '.' and '..'. 2893 */ 2894 if (uiop->uio_offset == 0) { 2895 NFSCL_REQSTART(nd, NFSPROC_LOOKUPP, vp); 2896 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2897 *tl++ = txdr_unsigned(NFSV4OP_GETFH); 2898 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2899 (void) nfsrv_putattrbit(nd, &attrbits); 2900 error = nfscl_request(nd, vp, p, cred, stuff); 2901 if (error) 2902 return (error); 2903 dotfileid = 0; /* Fake out the compiler. */ 2904 if ((nd->nd_flag & ND_NOMOREDATA) == 0) { 2905 error = nfsm_loadattr(nd, &nfsva); 2906 if (error != 0) 2907 goto nfsmout; 2908 dotfileid = nfsva.na_fileid; 2909 } 2910 if (nd->nd_repstat == 0) { 2911 NFSM_DISSECT(tl, u_int32_t *, 5 * NFSX_UNSIGNED); 2912 len = fxdr_unsigned(int, *(tl + 4)); 2913 if (len > 0 && len <= NFSX_V4FHMAX) 2914 error = nfsm_advance(nd, NFSM_RNDUP(len), -1); 2915 else 2916 error = EPERM; 2917 if (!error) { 2918 NFSM_DISSECT(tl, u_int32_t *, 2*NFSX_UNSIGNED); 2919 nfsva.na_mntonfileno = UINT64_MAX; 2920 error = nfsv4_loadattr(nd, NULL, &nfsva, NULL, 2921 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0, 2922 NULL, NULL, NULL, p, cred); 2923 if (error) { 2924 dotdotfileid = dotfileid; 2925 } else if (gotmnton) { 2926 if (nfsva.na_mntonfileno != UINT64_MAX) 2927 dotdotfileid = nfsva.na_mntonfileno; 2928 else 2929 dotdotfileid = nfsva.na_fileid; 2930 } else if (nfsva.na_filesid[0] == 2931 dnp->n_vattr.na_filesid[0] && 2932 nfsva.na_filesid[1] == 2933 dnp->n_vattr.na_filesid[1]) { 2934 dotdotfileid = nfsva.na_fileid; 2935 } else { 2936 do { 2937 fakefileno--; 2938 } while (fakefileno == 2939 nfsva.na_fileid); 2940 dotdotfileid = fakefileno; 2941 } 2942 } 2943 } else if (nd->nd_repstat == NFSERR_NOENT) { 2944 /* 2945 * Lookupp returns NFSERR_NOENT when we are 2946 * at the root, so just use the current dir. 2947 */ 2948 nd->nd_repstat = 0; 2949 dotdotfileid = dotfileid; 2950 } else { 2951 error = nd->nd_repstat; 2952 } 2953 mbuf_freem(nd->nd_mrep); 2954 if (error) 2955 return (error); 2956 nd->nd_mrep = NULL; 2957 dp = (struct dirent *)uio_iov_base(uiop); 2958 dp->d_off = 0; 2959 dp->d_type = DT_DIR; 2960 dp->d_fileno = dotfileid; 2961 dp->d_namlen = 1; 2962 *((uint64_t *)dp->d_name) = 0; /* Zero pad it. */ 2963 dp->d_name[0] = '.'; 2964 dp->d_reclen = _GENERIC_DIRSIZ(dp) + NFSX_HYPER; 2965 /* 2966 * Just make these offset cookie 0. 2967 */ 2968 tl = (u_int32_t *)&dp->d_name[8]; 2969 *tl++ = 0; 2970 *tl = 0; 2971 blksiz += dp->d_reclen; 2972 uio_uio_resid_add(uiop, -(dp->d_reclen)); 2973 uiop->uio_offset += dp->d_reclen; 2974 uio_iov_base_add(uiop, dp->d_reclen); 2975 uio_iov_len_add(uiop, -(dp->d_reclen)); 2976 dp = (struct dirent *)uio_iov_base(uiop); 2977 dp->d_off = 0; 2978 dp->d_type = DT_DIR; 2979 dp->d_fileno = dotdotfileid; 2980 dp->d_namlen = 2; 2981 *((uint64_t *)dp->d_name) = 0; 2982 dp->d_name[0] = '.'; 2983 dp->d_name[1] = '.'; 2984 dp->d_reclen = _GENERIC_DIRSIZ(dp) + NFSX_HYPER; 2985 /* 2986 * Just make these offset cookie 0. 2987 */ 2988 tl = (u_int32_t *)&dp->d_name[8]; 2989 *tl++ = 0; 2990 *tl = 0; 2991 blksiz += dp->d_reclen; 2992 uio_uio_resid_add(uiop, -(dp->d_reclen)); 2993 uiop->uio_offset += dp->d_reclen; 2994 uio_iov_base_add(uiop, dp->d_reclen); 2995 uio_iov_len_add(uiop, -(dp->d_reclen)); 2996 } 2997 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_RDATTRERROR); 2998 } else { 2999 reqsize = 5 * NFSX_UNSIGNED; 3000 } 3001 3002 3003 /* 3004 * Loop around doing readdir rpc's of size readsize. 3005 * The stopping criteria is EOF or buffer full. 3006 */ 3007 while (more_dirs && bigenough) { 3008 *attrflagp = 0; 3009 NFSCL_REQSTART(nd, NFSPROC_READDIR, vp); 3010 if (nd->nd_flag & ND_NFSV2) { 3011 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 3012 *tl++ = cookie.lval[1]; 3013 *tl = txdr_unsigned(readsize); 3014 } else { 3015 NFSM_BUILD(tl, u_int32_t *, reqsize); 3016 *tl++ = cookie.lval[0]; 3017 *tl++ = cookie.lval[1]; 3018 if (cookie.qval == 0) { 3019 *tl++ = 0; 3020 *tl++ = 0; 3021 } else { 3022 NFSLOCKNODE(dnp); 3023 *tl++ = dnp->n_cookieverf.nfsuquad[0]; 3024 *tl++ = dnp->n_cookieverf.nfsuquad[1]; 3025 NFSUNLOCKNODE(dnp); 3026 } 3027 if (nd->nd_flag & ND_NFSV4) { 3028 *tl++ = txdr_unsigned(readsize); 3029 *tl = txdr_unsigned(readsize); 3030 (void) nfsrv_putattrbit(nd, &attrbits); 3031 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 3032 *tl = txdr_unsigned(NFSV4OP_GETATTR); 3033 (void) nfsrv_putattrbit(nd, &dattrbits); 3034 } else { 3035 *tl = txdr_unsigned(readsize); 3036 } 3037 } 3038 error = nfscl_request(nd, vp, p, cred, stuff); 3039 if (error) 3040 return (error); 3041 if (!(nd->nd_flag & ND_NFSV2)) { 3042 if (nd->nd_flag & ND_NFSV3) 3043 error = nfscl_postop_attr(nd, nap, attrflagp, 3044 stuff); 3045 if (!nd->nd_repstat && !error) { 3046 NFSM_DISSECT(tl, u_int32_t *, NFSX_HYPER); 3047 NFSLOCKNODE(dnp); 3048 dnp->n_cookieverf.nfsuquad[0] = *tl++; 3049 dnp->n_cookieverf.nfsuquad[1] = *tl; 3050 NFSUNLOCKNODE(dnp); 3051 } 3052 } 3053 if (nd->nd_repstat || error) { 3054 if (!error) 3055 error = nd->nd_repstat; 3056 goto nfsmout; 3057 } 3058 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 3059 more_dirs = fxdr_unsigned(int, *tl); 3060 if (!more_dirs) 3061 tryformoredirs = 0; 3062 3063 /* loop through the dir entries, doctoring them to 4bsd form */ 3064 while (more_dirs && bigenough) { 3065 if (nd->nd_flag & ND_NFSV4) { 3066 NFSM_DISSECT(tl, u_int32_t *, 3*NFSX_UNSIGNED); 3067 ncookie.lval[0] = *tl++; 3068 ncookie.lval[1] = *tl++; 3069 len = fxdr_unsigned(int, *tl); 3070 } else if (nd->nd_flag & ND_NFSV3) { 3071 NFSM_DISSECT(tl, u_int32_t *, 3*NFSX_UNSIGNED); 3072 nfsva.na_fileid = fxdr_hyper(tl); 3073 tl += 2; 3074 len = fxdr_unsigned(int, *tl); 3075 } else { 3076 NFSM_DISSECT(tl, u_int32_t *, 2*NFSX_UNSIGNED); 3077 nfsva.na_fileid = fxdr_unsigned(uint64_t, 3078 *tl++); 3079 len = fxdr_unsigned(int, *tl); 3080 } 3081 if (len <= 0 || len > NFS_MAXNAMLEN) { 3082 error = EBADRPC; 3083 goto nfsmout; 3084 } 3085 tlen = roundup2(len, 8); 3086 if (tlen == len) 3087 tlen += 8; /* To ensure null termination. */ 3088 left = DIRBLKSIZ - blksiz; 3089 if (_GENERIC_DIRLEN(len) + NFSX_HYPER > left) { 3090 dp->d_reclen += left; 3091 uio_iov_base_add(uiop, left); 3092 uio_iov_len_add(uiop, -(left)); 3093 uio_uio_resid_add(uiop, -(left)); 3094 uiop->uio_offset += left; 3095 blksiz = 0; 3096 } 3097 if (_GENERIC_DIRLEN(len) + NFSX_HYPER > 3098 uio_uio_resid(uiop)) 3099 bigenough = 0; 3100 if (bigenough) { 3101 dp = (struct dirent *)uio_iov_base(uiop); 3102 dp->d_off = 0; 3103 dp->d_namlen = len; 3104 dp->d_reclen = _GENERIC_DIRLEN(len) + 3105 NFSX_HYPER; 3106 dp->d_type = DT_UNKNOWN; 3107 blksiz += dp->d_reclen; 3108 if (blksiz == DIRBLKSIZ) 3109 blksiz = 0; 3110 uio_uio_resid_add(uiop, -(DIRHDSIZ)); 3111 uiop->uio_offset += DIRHDSIZ; 3112 uio_iov_base_add(uiop, DIRHDSIZ); 3113 uio_iov_len_add(uiop, -(DIRHDSIZ)); 3114 error = nfsm_mbufuio(nd, uiop, len); 3115 if (error) 3116 goto nfsmout; 3117 cp = uio_iov_base(uiop); 3118 tlen -= len; 3119 *cp = '\0'; /* null terminate */ 3120 cp += tlen; /* points to cookie storage */ 3121 tl2 = (u_int32_t *)cp; 3122 uio_iov_base_add(uiop, (tlen + NFSX_HYPER)); 3123 uio_iov_len_add(uiop, -(tlen + NFSX_HYPER)); 3124 uio_uio_resid_add(uiop, -(tlen + NFSX_HYPER)); 3125 uiop->uio_offset += (tlen + NFSX_HYPER); 3126 } else { 3127 error = nfsm_advance(nd, NFSM_RNDUP(len), -1); 3128 if (error) 3129 goto nfsmout; 3130 } 3131 if (nd->nd_flag & ND_NFSV4) { 3132 rderr = 0; 3133 nfsva.na_mntonfileno = UINT64_MAX; 3134 error = nfsv4_loadattr(nd, NULL, &nfsva, NULL, 3135 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0, 3136 NULL, NULL, &rderr, p, cred); 3137 if (error) 3138 goto nfsmout; 3139 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 3140 } else if (nd->nd_flag & ND_NFSV3) { 3141 NFSM_DISSECT(tl, u_int32_t *, 3*NFSX_UNSIGNED); 3142 ncookie.lval[0] = *tl++; 3143 ncookie.lval[1] = *tl++; 3144 } else { 3145 NFSM_DISSECT(tl, u_int32_t *, 2*NFSX_UNSIGNED); 3146 ncookie.lval[0] = 0; 3147 ncookie.lval[1] = *tl++; 3148 } 3149 if (bigenough) { 3150 if (nd->nd_flag & ND_NFSV4) { 3151 if (rderr) { 3152 dp->d_fileno = 0; 3153 } else { 3154 if (gotmnton) { 3155 if (nfsva.na_mntonfileno != UINT64_MAX) 3156 dp->d_fileno = nfsva.na_mntonfileno; 3157 else 3158 dp->d_fileno = nfsva.na_fileid; 3159 } else if (nfsva.na_filesid[0] == 3160 dnp->n_vattr.na_filesid[0] && 3161 nfsva.na_filesid[1] == 3162 dnp->n_vattr.na_filesid[1]) { 3163 dp->d_fileno = nfsva.na_fileid; 3164 } else { 3165 do { 3166 fakefileno--; 3167 } while (fakefileno == 3168 nfsva.na_fileid); 3169 dp->d_fileno = fakefileno; 3170 } 3171 dp->d_type = vtonfs_dtype(nfsva.na_type); 3172 } 3173 } else { 3174 dp->d_fileno = nfsva.na_fileid; 3175 } 3176 *tl2++ = cookiep->nfsuquad[0] = cookie.lval[0] = 3177 ncookie.lval[0]; 3178 *tl2 = cookiep->nfsuquad[1] = cookie.lval[1] = 3179 ncookie.lval[1]; 3180 } 3181 more_dirs = fxdr_unsigned(int, *tl); 3182 } 3183 /* 3184 * If at end of rpc data, get the eof boolean 3185 */ 3186 if (!more_dirs) { 3187 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 3188 eof = fxdr_unsigned(int, *tl); 3189 if (tryformoredirs) 3190 more_dirs = !eof; 3191 if (nd->nd_flag & ND_NFSV4) { 3192 error = nfscl_postop_attr(nd, nap, attrflagp, 3193 stuff); 3194 if (error) 3195 goto nfsmout; 3196 } 3197 } 3198 mbuf_freem(nd->nd_mrep); 3199 nd->nd_mrep = NULL; 3200 } 3201 /* 3202 * Fill last record, iff any, out to a multiple of DIRBLKSIZ 3203 * by increasing d_reclen for the last record. 3204 */ 3205 if (blksiz > 0) { 3206 left = DIRBLKSIZ - blksiz; 3207 dp->d_reclen += left; 3208 uio_iov_base_add(uiop, left); 3209 uio_iov_len_add(uiop, -(left)); 3210 uio_uio_resid_add(uiop, -(left)); 3211 uiop->uio_offset += left; 3212 } 3213 3214 /* 3215 * If returning no data, assume end of file. 3216 * If not bigenough, return not end of file, since you aren't 3217 * returning all the data 3218 * Otherwise, return the eof flag from the server. 3219 */ 3220 if (eofp) { 3221 if (tresid == ((size_t)(uio_uio_resid(uiop)))) 3222 *eofp = 1; 3223 else if (!bigenough) 3224 *eofp = 0; 3225 else 3226 *eofp = eof; 3227 } 3228 3229 /* 3230 * Add extra empty records to any remaining DIRBLKSIZ chunks. 3231 */ 3232 while (uio_uio_resid(uiop) > 0 && uio_uio_resid(uiop) != tresid) { 3233 dp = (struct dirent *)uio_iov_base(uiop); 3234 dp->d_type = DT_UNKNOWN; 3235 dp->d_fileno = 0; 3236 dp->d_namlen = 0; 3237 dp->d_name[0] = '\0'; 3238 tl = (u_int32_t *)&dp->d_name[4]; 3239 *tl++ = cookie.lval[0]; 3240 *tl = cookie.lval[1]; 3241 dp->d_reclen = DIRBLKSIZ; 3242 uio_iov_base_add(uiop, DIRBLKSIZ); 3243 uio_iov_len_add(uiop, -(DIRBLKSIZ)); 3244 uio_uio_resid_add(uiop, -(DIRBLKSIZ)); 3245 uiop->uio_offset += DIRBLKSIZ; 3246 } 3247 3248 nfsmout: 3249 if (nd->nd_mrep != NULL) 3250 mbuf_freem(nd->nd_mrep); 3251 return (error); 3252 } 3253 3254 #ifndef APPLE 3255 /* 3256 * NFS V3 readdir plus RPC. Used in place of nfsrpc_readdir(). 3257 * (Also used for NFS V4 when mount flag set.) 3258 * (ditto above w.r.t. multiple of DIRBLKSIZ, etc.) 3259 */ 3260 APPLESTATIC int 3261 nfsrpc_readdirplus(vnode_t vp, struct uio *uiop, nfsuint64 *cookiep, 3262 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, 3263 int *eofp, void *stuff) 3264 { 3265 int len, left; 3266 struct dirent *dp = NULL; 3267 u_int32_t *tl; 3268 vnode_t newvp = NULLVP; 3269 struct nfsrv_descript nfsd, *nd = &nfsd; 3270 struct nameidata nami, *ndp = &nami; 3271 struct componentname *cnp = &ndp->ni_cnd; 3272 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 3273 struct nfsnode *dnp = VTONFS(vp), *np; 3274 struct nfsvattr nfsva; 3275 struct nfsfh *nfhp; 3276 nfsquad_t cookie, ncookie; 3277 int error = 0, tlen, more_dirs = 1, blksiz = 0, bigenough = 1; 3278 int attrflag, tryformoredirs = 1, eof = 0, gotmnton = 0; 3279 int isdotdot = 0, unlocknewvp = 0; 3280 u_int64_t dotfileid, dotdotfileid = 0, fakefileno = UINT64_MAX; 3281 u_int64_t fileno = 0; 3282 char *cp; 3283 nfsattrbit_t attrbits, dattrbits; 3284 size_t tresid; 3285 u_int32_t *tl2 = NULL, rderr; 3286 struct timespec dctime; 3287 3288 KASSERT(uiop->uio_iovcnt == 1 && 3289 (uio_uio_resid(uiop) & (DIRBLKSIZ - 1)) == 0, 3290 ("nfs readdirplusrpc bad uio")); 3291 timespecclear(&dctime); 3292 *attrflagp = 0; 3293 if (eofp != NULL) 3294 *eofp = 0; 3295 ndp->ni_dvp = vp; 3296 nd->nd_mrep = NULL; 3297 cookie.lval[0] = cookiep->nfsuquad[0]; 3298 cookie.lval[1] = cookiep->nfsuquad[1]; 3299 tresid = uio_uio_resid(uiop); 3300 3301 /* 3302 * For NFSv4, first create the "." and ".." entries. 3303 */ 3304 if (NFSHASNFSV4(nmp)) { 3305 NFSGETATTR_ATTRBIT(&dattrbits); 3306 NFSZERO_ATTRBIT(&attrbits); 3307 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_FILEID); 3308 if (NFSISSET_ATTRBIT(&dnp->n_vattr.na_suppattr, 3309 NFSATTRBIT_MOUNTEDONFILEID)) { 3310 NFSSETBIT_ATTRBIT(&attrbits, 3311 NFSATTRBIT_MOUNTEDONFILEID); 3312 gotmnton = 1; 3313 } else { 3314 /* 3315 * Must fake it. Use the fileno, except when the 3316 * fsid is != to that of the directory. For that 3317 * case, generate a fake fileno that is not the same. 3318 */ 3319 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_FSID); 3320 gotmnton = 0; 3321 } 3322 3323 /* 3324 * Joy, oh joy. For V4 we get to hand craft '.' and '..'. 3325 */ 3326 if (uiop->uio_offset == 0) { 3327 NFSCL_REQSTART(nd, NFSPROC_LOOKUPP, vp); 3328 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 3329 *tl++ = txdr_unsigned(NFSV4OP_GETFH); 3330 *tl = txdr_unsigned(NFSV4OP_GETATTR); 3331 (void) nfsrv_putattrbit(nd, &attrbits); 3332 error = nfscl_request(nd, vp, p, cred, stuff); 3333 if (error) 3334 return (error); 3335 dotfileid = 0; /* Fake out the compiler. */ 3336 if ((nd->nd_flag & ND_NOMOREDATA) == 0) { 3337 error = nfsm_loadattr(nd, &nfsva); 3338 if (error != 0) 3339 goto nfsmout; 3340 dctime = nfsva.na_ctime; 3341 dotfileid = nfsva.na_fileid; 3342 } 3343 if (nd->nd_repstat == 0) { 3344 NFSM_DISSECT(tl, u_int32_t *, 5 * NFSX_UNSIGNED); 3345 len = fxdr_unsigned(int, *(tl + 4)); 3346 if (len > 0 && len <= NFSX_V4FHMAX) 3347 error = nfsm_advance(nd, NFSM_RNDUP(len), -1); 3348 else 3349 error = EPERM; 3350 if (!error) { 3351 NFSM_DISSECT(tl, u_int32_t *, 2*NFSX_UNSIGNED); 3352 nfsva.na_mntonfileno = UINT64_MAX; 3353 error = nfsv4_loadattr(nd, NULL, &nfsva, NULL, 3354 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0, 3355 NULL, NULL, NULL, p, cred); 3356 if (error) { 3357 dotdotfileid = dotfileid; 3358 } else if (gotmnton) { 3359 if (nfsva.na_mntonfileno != UINT64_MAX) 3360 dotdotfileid = nfsva.na_mntonfileno; 3361 else 3362 dotdotfileid = nfsva.na_fileid; 3363 } else if (nfsva.na_filesid[0] == 3364 dnp->n_vattr.na_filesid[0] && 3365 nfsva.na_filesid[1] == 3366 dnp->n_vattr.na_filesid[1]) { 3367 dotdotfileid = nfsva.na_fileid; 3368 } else { 3369 do { 3370 fakefileno--; 3371 } while (fakefileno == 3372 nfsva.na_fileid); 3373 dotdotfileid = fakefileno; 3374 } 3375 } 3376 } else if (nd->nd_repstat == NFSERR_NOENT) { 3377 /* 3378 * Lookupp returns NFSERR_NOENT when we are 3379 * at the root, so just use the current dir. 3380 */ 3381 nd->nd_repstat = 0; 3382 dotdotfileid = dotfileid; 3383 } else { 3384 error = nd->nd_repstat; 3385 } 3386 mbuf_freem(nd->nd_mrep); 3387 if (error) 3388 return (error); 3389 nd->nd_mrep = NULL; 3390 dp = (struct dirent *)uio_iov_base(uiop); 3391 dp->d_off = 0; 3392 dp->d_type = DT_DIR; 3393 dp->d_fileno = dotfileid; 3394 dp->d_namlen = 1; 3395 *((uint64_t *)dp->d_name) = 0; /* Zero pad it. */ 3396 dp->d_name[0] = '.'; 3397 dp->d_reclen = _GENERIC_DIRSIZ(dp) + NFSX_HYPER; 3398 /* 3399 * Just make these offset cookie 0. 3400 */ 3401 tl = (u_int32_t *)&dp->d_name[8]; 3402 *tl++ = 0; 3403 *tl = 0; 3404 blksiz += dp->d_reclen; 3405 uio_uio_resid_add(uiop, -(dp->d_reclen)); 3406 uiop->uio_offset += dp->d_reclen; 3407 uio_iov_base_add(uiop, dp->d_reclen); 3408 uio_iov_len_add(uiop, -(dp->d_reclen)); 3409 dp = (struct dirent *)uio_iov_base(uiop); 3410 dp->d_off = 0; 3411 dp->d_type = DT_DIR; 3412 dp->d_fileno = dotdotfileid; 3413 dp->d_namlen = 2; 3414 *((uint64_t *)dp->d_name) = 0; 3415 dp->d_name[0] = '.'; 3416 dp->d_name[1] = '.'; 3417 dp->d_reclen = _GENERIC_DIRSIZ(dp) + NFSX_HYPER; 3418 /* 3419 * Just make these offset cookie 0. 3420 */ 3421 tl = (u_int32_t *)&dp->d_name[8]; 3422 *tl++ = 0; 3423 *tl = 0; 3424 blksiz += dp->d_reclen; 3425 uio_uio_resid_add(uiop, -(dp->d_reclen)); 3426 uiop->uio_offset += dp->d_reclen; 3427 uio_iov_base_add(uiop, dp->d_reclen); 3428 uio_iov_len_add(uiop, -(dp->d_reclen)); 3429 } 3430 NFSREADDIRPLUS_ATTRBIT(&attrbits); 3431 if (gotmnton) 3432 NFSSETBIT_ATTRBIT(&attrbits, 3433 NFSATTRBIT_MOUNTEDONFILEID); 3434 } 3435 3436 /* 3437 * Loop around doing readdir rpc's of size nm_readdirsize. 3438 * The stopping criteria is EOF or buffer full. 3439 */ 3440 while (more_dirs && bigenough) { 3441 *attrflagp = 0; 3442 NFSCL_REQSTART(nd, NFSPROC_READDIRPLUS, vp); 3443 NFSM_BUILD(tl, u_int32_t *, 6 * NFSX_UNSIGNED); 3444 *tl++ = cookie.lval[0]; 3445 *tl++ = cookie.lval[1]; 3446 if (cookie.qval == 0) { 3447 *tl++ = 0; 3448 *tl++ = 0; 3449 } else { 3450 NFSLOCKNODE(dnp); 3451 *tl++ = dnp->n_cookieverf.nfsuquad[0]; 3452 *tl++ = dnp->n_cookieverf.nfsuquad[1]; 3453 NFSUNLOCKNODE(dnp); 3454 } 3455 *tl++ = txdr_unsigned(nmp->nm_readdirsize); 3456 *tl = txdr_unsigned(nmp->nm_readdirsize); 3457 if (nd->nd_flag & ND_NFSV4) { 3458 (void) nfsrv_putattrbit(nd, &attrbits); 3459 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 3460 *tl = txdr_unsigned(NFSV4OP_GETATTR); 3461 (void) nfsrv_putattrbit(nd, &dattrbits); 3462 } 3463 error = nfscl_request(nd, vp, p, cred, stuff); 3464 if (error) 3465 return (error); 3466 if (nd->nd_flag & ND_NFSV3) 3467 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 3468 if (nd->nd_repstat || error) { 3469 if (!error) 3470 error = nd->nd_repstat; 3471 goto nfsmout; 3472 } 3473 if ((nd->nd_flag & ND_NFSV3) != 0 && *attrflagp != 0) 3474 dctime = nap->na_ctime; 3475 NFSM_DISSECT(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 3476 NFSLOCKNODE(dnp); 3477 dnp->n_cookieverf.nfsuquad[0] = *tl++; 3478 dnp->n_cookieverf.nfsuquad[1] = *tl++; 3479 NFSUNLOCKNODE(dnp); 3480 more_dirs = fxdr_unsigned(int, *tl); 3481 if (!more_dirs) 3482 tryformoredirs = 0; 3483 3484 /* loop through the dir entries, doctoring them to 4bsd form */ 3485 while (more_dirs && bigenough) { 3486 NFSM_DISSECT(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 3487 if (nd->nd_flag & ND_NFSV4) { 3488 ncookie.lval[0] = *tl++; 3489 ncookie.lval[1] = *tl++; 3490 } else { 3491 fileno = fxdr_hyper(tl); 3492 tl += 2; 3493 } 3494 len = fxdr_unsigned(int, *tl); 3495 if (len <= 0 || len > NFS_MAXNAMLEN) { 3496 error = EBADRPC; 3497 goto nfsmout; 3498 } 3499 tlen = roundup2(len, 8); 3500 if (tlen == len) 3501 tlen += 8; /* To ensure null termination. */ 3502 left = DIRBLKSIZ - blksiz; 3503 if (_GENERIC_DIRLEN(len) + NFSX_HYPER > left) { 3504 dp->d_reclen += left; 3505 uio_iov_base_add(uiop, left); 3506 uio_iov_len_add(uiop, -(left)); 3507 uio_uio_resid_add(uiop, -(left)); 3508 uiop->uio_offset += left; 3509 blksiz = 0; 3510 } 3511 if (_GENERIC_DIRLEN(len) + NFSX_HYPER > 3512 uio_uio_resid(uiop)) 3513 bigenough = 0; 3514 if (bigenough) { 3515 dp = (struct dirent *)uio_iov_base(uiop); 3516 dp->d_off = 0; 3517 dp->d_namlen = len; 3518 dp->d_reclen = _GENERIC_DIRLEN(len) + 3519 NFSX_HYPER; 3520 dp->d_type = DT_UNKNOWN; 3521 blksiz += dp->d_reclen; 3522 if (blksiz == DIRBLKSIZ) 3523 blksiz = 0; 3524 uio_uio_resid_add(uiop, -(DIRHDSIZ)); 3525 uiop->uio_offset += DIRHDSIZ; 3526 uio_iov_base_add(uiop, DIRHDSIZ); 3527 uio_iov_len_add(uiop, -(DIRHDSIZ)); 3528 cnp->cn_nameptr = uio_iov_base(uiop); 3529 cnp->cn_namelen = len; 3530 NFSCNHASHZERO(cnp); 3531 error = nfsm_mbufuio(nd, uiop, len); 3532 if (error) 3533 goto nfsmout; 3534 cp = uio_iov_base(uiop); 3535 tlen -= len; 3536 *cp = '\0'; 3537 cp += tlen; /* points to cookie storage */ 3538 tl2 = (u_int32_t *)cp; 3539 if (len == 2 && cnp->cn_nameptr[0] == '.' && 3540 cnp->cn_nameptr[1] == '.') 3541 isdotdot = 1; 3542 else 3543 isdotdot = 0; 3544 uio_iov_base_add(uiop, (tlen + NFSX_HYPER)); 3545 uio_iov_len_add(uiop, -(tlen + NFSX_HYPER)); 3546 uio_uio_resid_add(uiop, -(tlen + NFSX_HYPER)); 3547 uiop->uio_offset += (tlen + NFSX_HYPER); 3548 } else { 3549 error = nfsm_advance(nd, NFSM_RNDUP(len), -1); 3550 if (error) 3551 goto nfsmout; 3552 } 3553 nfhp = NULL; 3554 if (nd->nd_flag & ND_NFSV3) { 3555 NFSM_DISSECT(tl, u_int32_t *, 3*NFSX_UNSIGNED); 3556 ncookie.lval[0] = *tl++; 3557 ncookie.lval[1] = *tl++; 3558 attrflag = fxdr_unsigned(int, *tl); 3559 if (attrflag) { 3560 error = nfsm_loadattr(nd, &nfsva); 3561 if (error) 3562 goto nfsmout; 3563 } 3564 NFSM_DISSECT(tl,u_int32_t *,NFSX_UNSIGNED); 3565 if (*tl) { 3566 error = nfsm_getfh(nd, &nfhp); 3567 if (error) 3568 goto nfsmout; 3569 } 3570 if (!attrflag && nfhp != NULL) { 3571 free(nfhp, M_NFSFH); 3572 nfhp = NULL; 3573 } 3574 } else { 3575 rderr = 0; 3576 nfsva.na_mntonfileno = 0xffffffff; 3577 error = nfsv4_loadattr(nd, NULL, &nfsva, &nfhp, 3578 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0, 3579 NULL, NULL, &rderr, p, cred); 3580 if (error) 3581 goto nfsmout; 3582 } 3583 3584 if (bigenough) { 3585 if (nd->nd_flag & ND_NFSV4) { 3586 if (rderr) { 3587 dp->d_fileno = 0; 3588 } else if (gotmnton) { 3589 if (nfsva.na_mntonfileno != 0xffffffff) 3590 dp->d_fileno = nfsva.na_mntonfileno; 3591 else 3592 dp->d_fileno = nfsva.na_fileid; 3593 } else if (nfsva.na_filesid[0] == 3594 dnp->n_vattr.na_filesid[0] && 3595 nfsva.na_filesid[1] == 3596 dnp->n_vattr.na_filesid[1]) { 3597 dp->d_fileno = nfsva.na_fileid; 3598 } else { 3599 do { 3600 fakefileno--; 3601 } while (fakefileno == 3602 nfsva.na_fileid); 3603 dp->d_fileno = fakefileno; 3604 } 3605 } else { 3606 dp->d_fileno = fileno; 3607 } 3608 *tl2++ = cookiep->nfsuquad[0] = cookie.lval[0] = 3609 ncookie.lval[0]; 3610 *tl2 = cookiep->nfsuquad[1] = cookie.lval[1] = 3611 ncookie.lval[1]; 3612 3613 if (nfhp != NULL) { 3614 if (NFSRV_CMPFH(nfhp->nfh_fh, nfhp->nfh_len, 3615 dnp->n_fhp->nfh_fh, dnp->n_fhp->nfh_len)) { 3616 VREF(vp); 3617 newvp = vp; 3618 unlocknewvp = 0; 3619 free(nfhp, M_NFSFH); 3620 np = dnp; 3621 } else if (isdotdot != 0) { 3622 /* 3623 * Skip doing a nfscl_nget() call for "..". 3624 * There's a race between acquiring the nfs 3625 * node here and lookups that look for the 3626 * directory being read (in the parent). 3627 * It would try to get a lock on ".." here, 3628 * owning the lock on the directory being 3629 * read. Lookup will hold the lock on ".." 3630 * and try to acquire the lock on the 3631 * directory being read. 3632 * If the directory is unlocked/relocked, 3633 * then there is a LOR with the buflock 3634 * vp is relocked. 3635 */ 3636 free(nfhp, M_NFSFH); 3637 } else { 3638 error = nfscl_nget(vnode_mount(vp), vp, 3639 nfhp, cnp, p, &np, NULL, LK_EXCLUSIVE); 3640 if (!error) { 3641 newvp = NFSTOV(np); 3642 unlocknewvp = 1; 3643 } 3644 } 3645 nfhp = NULL; 3646 if (newvp != NULLVP) { 3647 error = nfscl_loadattrcache(&newvp, 3648 &nfsva, NULL, NULL, 0, 0); 3649 if (error) { 3650 if (unlocknewvp) 3651 vput(newvp); 3652 else 3653 vrele(newvp); 3654 goto nfsmout; 3655 } 3656 dp->d_type = 3657 vtonfs_dtype(np->n_vattr.na_type); 3658 ndp->ni_vp = newvp; 3659 NFSCNHASH(cnp, HASHINIT); 3660 if (cnp->cn_namelen <= NCHNAMLEN && 3661 (newvp->v_type != VDIR || 3662 dctime.tv_sec != 0)) { 3663 cache_enter_time(ndp->ni_dvp, 3664 ndp->ni_vp, cnp, 3665 &nfsva.na_ctime, 3666 newvp->v_type != VDIR ? NULL : 3667 &dctime); 3668 } 3669 if (unlocknewvp) 3670 vput(newvp); 3671 else 3672 vrele(newvp); 3673 newvp = NULLVP; 3674 } 3675 } 3676 } else if (nfhp != NULL) { 3677 free(nfhp, M_NFSFH); 3678 } 3679 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 3680 more_dirs = fxdr_unsigned(int, *tl); 3681 } 3682 /* 3683 * If at end of rpc data, get the eof boolean 3684 */ 3685 if (!more_dirs) { 3686 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 3687 eof = fxdr_unsigned(int, *tl); 3688 if (tryformoredirs) 3689 more_dirs = !eof; 3690 if (nd->nd_flag & ND_NFSV4) { 3691 error = nfscl_postop_attr(nd, nap, attrflagp, 3692 stuff); 3693 if (error) 3694 goto nfsmout; 3695 } 3696 } 3697 mbuf_freem(nd->nd_mrep); 3698 nd->nd_mrep = NULL; 3699 } 3700 /* 3701 * Fill last record, iff any, out to a multiple of DIRBLKSIZ 3702 * by increasing d_reclen for the last record. 3703 */ 3704 if (blksiz > 0) { 3705 left = DIRBLKSIZ - blksiz; 3706 dp->d_reclen += left; 3707 uio_iov_base_add(uiop, left); 3708 uio_iov_len_add(uiop, -(left)); 3709 uio_uio_resid_add(uiop, -(left)); 3710 uiop->uio_offset += left; 3711 } 3712 3713 /* 3714 * If returning no data, assume end of file. 3715 * If not bigenough, return not end of file, since you aren't 3716 * returning all the data 3717 * Otherwise, return the eof flag from the server. 3718 */ 3719 if (eofp != NULL) { 3720 if (tresid == uio_uio_resid(uiop)) 3721 *eofp = 1; 3722 else if (!bigenough) 3723 *eofp = 0; 3724 else 3725 *eofp = eof; 3726 } 3727 3728 /* 3729 * Add extra empty records to any remaining DIRBLKSIZ chunks. 3730 */ 3731 while (uio_uio_resid(uiop) > 0 && uio_uio_resid(uiop) != tresid) { 3732 dp = (struct dirent *)uio_iov_base(uiop); 3733 dp->d_type = DT_UNKNOWN; 3734 dp->d_fileno = 0; 3735 dp->d_namlen = 0; 3736 dp->d_name[0] = '\0'; 3737 tl = (u_int32_t *)&dp->d_name[4]; 3738 *tl++ = cookie.lval[0]; 3739 *tl = cookie.lval[1]; 3740 dp->d_reclen = DIRBLKSIZ; 3741 uio_iov_base_add(uiop, DIRBLKSIZ); 3742 uio_iov_len_add(uiop, -(DIRBLKSIZ)); 3743 uio_uio_resid_add(uiop, -(DIRBLKSIZ)); 3744 uiop->uio_offset += DIRBLKSIZ; 3745 } 3746 3747 nfsmout: 3748 if (nd->nd_mrep != NULL) 3749 mbuf_freem(nd->nd_mrep); 3750 return (error); 3751 } 3752 #endif /* !APPLE */ 3753 3754 /* 3755 * Nfs commit rpc 3756 */ 3757 APPLESTATIC int 3758 nfsrpc_commit(vnode_t vp, u_quad_t offset, int cnt, struct ucred *cred, 3759 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff) 3760 { 3761 u_int32_t *tl; 3762 struct nfsrv_descript nfsd, *nd = &nfsd; 3763 nfsattrbit_t attrbits; 3764 int error; 3765 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 3766 3767 *attrflagp = 0; 3768 NFSCL_REQSTART(nd, NFSPROC_COMMIT, vp); 3769 NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 3770 txdr_hyper(offset, tl); 3771 tl += 2; 3772 *tl = txdr_unsigned(cnt); 3773 if (nd->nd_flag & ND_NFSV4) { 3774 /* 3775 * And do a Getattr op. 3776 */ 3777 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 3778 *tl = txdr_unsigned(NFSV4OP_GETATTR); 3779 NFSGETATTR_ATTRBIT(&attrbits); 3780 (void) nfsrv_putattrbit(nd, &attrbits); 3781 } 3782 error = nfscl_request(nd, vp, p, cred, stuff); 3783 if (error) 3784 return (error); 3785 error = nfscl_wcc_data(nd, vp, nap, attrflagp, NULL, stuff); 3786 if (!error && !nd->nd_repstat) { 3787 NFSM_DISSECT(tl, u_int32_t *, NFSX_VERF); 3788 NFSLOCKMNT(nmp); 3789 if (NFSBCMP(nmp->nm_verf, tl, NFSX_VERF)) { 3790 NFSBCOPY(tl, nmp->nm_verf, NFSX_VERF); 3791 nd->nd_repstat = NFSERR_STALEWRITEVERF; 3792 } 3793 NFSUNLOCKMNT(nmp); 3794 if (nd->nd_flag & ND_NFSV4) 3795 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 3796 } 3797 nfsmout: 3798 if (!error && nd->nd_repstat) 3799 error = nd->nd_repstat; 3800 mbuf_freem(nd->nd_mrep); 3801 return (error); 3802 } 3803 3804 /* 3805 * NFS byte range lock rpc. 3806 * (Mostly just calls one of the three lower level RPC routines.) 3807 */ 3808 APPLESTATIC int 3809 nfsrpc_advlock(vnode_t vp, off_t size, int op, struct flock *fl, 3810 int reclaim, struct ucred *cred, NFSPROC_T *p, void *id, int flags) 3811 { 3812 struct nfscllockowner *lp; 3813 struct nfsclclient *clp; 3814 struct nfsfh *nfhp; 3815 struct nfsrv_descript nfsd, *nd = &nfsd; 3816 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 3817 u_int64_t off, len; 3818 off_t start, end; 3819 u_int32_t clidrev = 0; 3820 int error = 0, newone = 0, expireret = 0, retrycnt, donelocally; 3821 int callcnt, dorpc; 3822 3823 /* 3824 * Convert the flock structure into a start and end and do POSIX 3825 * bounds checking. 3826 */ 3827 switch (fl->l_whence) { 3828 case SEEK_SET: 3829 case SEEK_CUR: 3830 /* 3831 * Caller is responsible for adding any necessary offset 3832 * when SEEK_CUR is used. 3833 */ 3834 start = fl->l_start; 3835 off = fl->l_start; 3836 break; 3837 case SEEK_END: 3838 start = size + fl->l_start; 3839 off = size + fl->l_start; 3840 break; 3841 default: 3842 return (EINVAL); 3843 } 3844 if (start < 0) 3845 return (EINVAL); 3846 if (fl->l_len != 0) { 3847 end = start + fl->l_len - 1; 3848 if (end < start) 3849 return (EINVAL); 3850 } 3851 3852 len = fl->l_len; 3853 if (len == 0) 3854 len = NFS64BITSSET; 3855 retrycnt = 0; 3856 do { 3857 nd->nd_repstat = 0; 3858 if (op == F_GETLK) { 3859 error = nfscl_getcl(vnode_mount(vp), cred, p, 1, &clp); 3860 if (error) 3861 return (error); 3862 error = nfscl_lockt(vp, clp, off, len, fl, p, id, flags); 3863 if (!error) { 3864 clidrev = clp->nfsc_clientidrev; 3865 error = nfsrpc_lockt(nd, vp, clp, off, len, fl, cred, 3866 p, id, flags); 3867 } else if (error == -1) { 3868 error = 0; 3869 } 3870 nfscl_clientrelease(clp); 3871 } else if (op == F_UNLCK && fl->l_type == F_UNLCK) { 3872 /* 3873 * We must loop around for all lockowner cases. 3874 */ 3875 callcnt = 0; 3876 error = nfscl_getcl(vnode_mount(vp), cred, p, 1, &clp); 3877 if (error) 3878 return (error); 3879 do { 3880 error = nfscl_relbytelock(vp, off, len, cred, p, callcnt, 3881 clp, id, flags, &lp, &dorpc); 3882 /* 3883 * If it returns a NULL lp, we're done. 3884 */ 3885 if (lp == NULL) { 3886 if (callcnt == 0) 3887 nfscl_clientrelease(clp); 3888 else 3889 nfscl_releasealllocks(clp, vp, p, id, flags); 3890 return (error); 3891 } 3892 if (nmp->nm_clp != NULL) 3893 clidrev = nmp->nm_clp->nfsc_clientidrev; 3894 else 3895 clidrev = 0; 3896 /* 3897 * If the server doesn't support Posix lock semantics, 3898 * only allow locks on the entire file, since it won't 3899 * handle overlapping byte ranges. 3900 * There might still be a problem when a lock 3901 * upgrade/downgrade (read<->write) occurs, since the 3902 * server "might" expect an unlock first? 3903 */ 3904 if (dorpc && (lp->nfsl_open->nfso_posixlock || 3905 (off == 0 && len == NFS64BITSSET))) { 3906 /* 3907 * Since the lock records will go away, we must 3908 * wait for grace and delay here. 3909 */ 3910 do { 3911 error = nfsrpc_locku(nd, nmp, lp, off, len, 3912 NFSV4LOCKT_READ, cred, p, 0); 3913 if ((nd->nd_repstat == NFSERR_GRACE || 3914 nd->nd_repstat == NFSERR_DELAY) && 3915 error == 0) 3916 (void) nfs_catnap(PZERO, (int)nd->nd_repstat, 3917 "nfs_advlock"); 3918 } while ((nd->nd_repstat == NFSERR_GRACE || 3919 nd->nd_repstat == NFSERR_DELAY) && error == 0); 3920 } 3921 callcnt++; 3922 } while (error == 0 && nd->nd_repstat == 0); 3923 nfscl_releasealllocks(clp, vp, p, id, flags); 3924 } else if (op == F_SETLK) { 3925 error = nfscl_getbytelock(vp, off, len, fl->l_type, cred, p, 3926 NULL, 0, id, flags, NULL, NULL, &lp, &newone, &donelocally); 3927 if (error || donelocally) { 3928 return (error); 3929 } 3930 if (nmp->nm_clp != NULL) 3931 clidrev = nmp->nm_clp->nfsc_clientidrev; 3932 else 3933 clidrev = 0; 3934 nfhp = VTONFS(vp)->n_fhp; 3935 if (!lp->nfsl_open->nfso_posixlock && 3936 (off != 0 || len != NFS64BITSSET)) { 3937 error = EINVAL; 3938 } else { 3939 error = nfsrpc_lock(nd, nmp, vp, nfhp->nfh_fh, 3940 nfhp->nfh_len, lp, newone, reclaim, off, 3941 len, fl->l_type, cred, p, 0); 3942 } 3943 if (!error) 3944 error = nd->nd_repstat; 3945 nfscl_lockrelease(lp, error, newone); 3946 } else { 3947 error = EINVAL; 3948 } 3949 if (!error) 3950 error = nd->nd_repstat; 3951 if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 3952 error == NFSERR_STALEDONTRECOVER || 3953 error == NFSERR_STALECLIENTID || error == NFSERR_DELAY || 3954 error == NFSERR_BADSESSION) { 3955 (void) nfs_catnap(PZERO, error, "nfs_advlock"); 3956 } else if ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) 3957 && clidrev != 0) { 3958 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p); 3959 retrycnt++; 3960 } 3961 } while (error == NFSERR_GRACE || 3962 error == NFSERR_STALECLIENTID || error == NFSERR_DELAY || 3963 error == NFSERR_STALEDONTRECOVER || error == NFSERR_STALESTATEID || 3964 error == NFSERR_BADSESSION || 3965 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) && 3966 expireret == 0 && clidrev != 0 && retrycnt < 4)); 3967 if (error && retrycnt >= 4) 3968 error = EIO; 3969 return (error); 3970 } 3971 3972 /* 3973 * The lower level routine for the LockT case. 3974 */ 3975 APPLESTATIC int 3976 nfsrpc_lockt(struct nfsrv_descript *nd, vnode_t vp, 3977 struct nfsclclient *clp, u_int64_t off, u_int64_t len, struct flock *fl, 3978 struct ucred *cred, NFSPROC_T *p, void *id, int flags) 3979 { 3980 u_int32_t *tl; 3981 int error, type, size; 3982 uint8_t own[NFSV4CL_LOCKNAMELEN + NFSX_V4FHMAX]; 3983 struct nfsnode *np; 3984 struct nfsmount *nmp; 3985 struct nfsclsession *tsep; 3986 3987 nmp = VFSTONFS(vp->v_mount); 3988 NFSCL_REQSTART(nd, NFSPROC_LOCKT, vp); 3989 NFSM_BUILD(tl, u_int32_t *, 7 * NFSX_UNSIGNED); 3990 if (fl->l_type == F_RDLCK) 3991 *tl++ = txdr_unsigned(NFSV4LOCKT_READ); 3992 else 3993 *tl++ = txdr_unsigned(NFSV4LOCKT_WRITE); 3994 txdr_hyper(off, tl); 3995 tl += 2; 3996 txdr_hyper(len, tl); 3997 tl += 2; 3998 tsep = nfsmnt_mdssession(nmp); 3999 *tl++ = tsep->nfsess_clientid.lval[0]; 4000 *tl = tsep->nfsess_clientid.lval[1]; 4001 nfscl_filllockowner(id, own, flags); 4002 np = VTONFS(vp); 4003 NFSBCOPY(np->n_fhp->nfh_fh, &own[NFSV4CL_LOCKNAMELEN], 4004 np->n_fhp->nfh_len); 4005 (void)nfsm_strtom(nd, own, NFSV4CL_LOCKNAMELEN + np->n_fhp->nfh_len); 4006 error = nfscl_request(nd, vp, p, cred, NULL); 4007 if (error) 4008 return (error); 4009 if (nd->nd_repstat == 0) { 4010 fl->l_type = F_UNLCK; 4011 } else if (nd->nd_repstat == NFSERR_DENIED) { 4012 nd->nd_repstat = 0; 4013 fl->l_whence = SEEK_SET; 4014 NFSM_DISSECT(tl, u_int32_t *, 8 * NFSX_UNSIGNED); 4015 fl->l_start = fxdr_hyper(tl); 4016 tl += 2; 4017 len = fxdr_hyper(tl); 4018 tl += 2; 4019 if (len == NFS64BITSSET) 4020 fl->l_len = 0; 4021 else 4022 fl->l_len = len; 4023 type = fxdr_unsigned(int, *tl++); 4024 if (type == NFSV4LOCKT_WRITE) 4025 fl->l_type = F_WRLCK; 4026 else 4027 fl->l_type = F_RDLCK; 4028 /* 4029 * XXX For now, I have no idea what to do with the 4030 * conflicting lock_owner, so I'll just set the pid == 0 4031 * and skip over the lock_owner. 4032 */ 4033 fl->l_pid = (pid_t)0; 4034 tl += 2; 4035 size = fxdr_unsigned(int, *tl); 4036 if (size < 0 || size > NFSV4_OPAQUELIMIT) 4037 error = EBADRPC; 4038 if (!error) 4039 error = nfsm_advance(nd, NFSM_RNDUP(size), -1); 4040 } else if (nd->nd_repstat == NFSERR_STALECLIENTID) 4041 nfscl_initiate_recovery(clp); 4042 nfsmout: 4043 mbuf_freem(nd->nd_mrep); 4044 return (error); 4045 } 4046 4047 /* 4048 * Lower level function that performs the LockU RPC. 4049 */ 4050 static int 4051 nfsrpc_locku(struct nfsrv_descript *nd, struct nfsmount *nmp, 4052 struct nfscllockowner *lp, u_int64_t off, u_int64_t len, 4053 u_int32_t type, struct ucred *cred, NFSPROC_T *p, int syscred) 4054 { 4055 u_int32_t *tl; 4056 int error; 4057 4058 nfscl_reqstart(nd, NFSPROC_LOCKU, nmp, lp->nfsl_open->nfso_fh, 4059 lp->nfsl_open->nfso_fhlen, NULL, NULL, 0, 0); 4060 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID + 6 * NFSX_UNSIGNED); 4061 *tl++ = txdr_unsigned(type); 4062 *tl = txdr_unsigned(lp->nfsl_seqid); 4063 if (nfstest_outofseq && 4064 (arc4random() % nfstest_outofseq) == 0) 4065 *tl = txdr_unsigned(lp->nfsl_seqid + 1); 4066 tl++; 4067 if (NFSHASNFSV4N(nmp)) 4068 *tl++ = 0; 4069 else 4070 *tl++ = lp->nfsl_stateid.seqid; 4071 *tl++ = lp->nfsl_stateid.other[0]; 4072 *tl++ = lp->nfsl_stateid.other[1]; 4073 *tl++ = lp->nfsl_stateid.other[2]; 4074 txdr_hyper(off, tl); 4075 tl += 2; 4076 txdr_hyper(len, tl); 4077 if (syscred) 4078 nd->nd_flag |= ND_USEGSSNAME; 4079 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 4080 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4081 NFSCL_INCRSEQID(lp->nfsl_seqid, nd); 4082 if (error) 4083 return (error); 4084 if (nd->nd_repstat == 0) { 4085 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID); 4086 lp->nfsl_stateid.seqid = *tl++; 4087 lp->nfsl_stateid.other[0] = *tl++; 4088 lp->nfsl_stateid.other[1] = *tl++; 4089 lp->nfsl_stateid.other[2] = *tl; 4090 } else if (nd->nd_repstat == NFSERR_STALESTATEID) 4091 nfscl_initiate_recovery(lp->nfsl_open->nfso_own->nfsow_clp); 4092 nfsmout: 4093 mbuf_freem(nd->nd_mrep); 4094 return (error); 4095 } 4096 4097 /* 4098 * The actual Lock RPC. 4099 */ 4100 APPLESTATIC int 4101 nfsrpc_lock(struct nfsrv_descript *nd, struct nfsmount *nmp, vnode_t vp, 4102 u_int8_t *nfhp, int fhlen, struct nfscllockowner *lp, int newone, 4103 int reclaim, u_int64_t off, u_int64_t len, short type, struct ucred *cred, 4104 NFSPROC_T *p, int syscred) 4105 { 4106 u_int32_t *tl; 4107 int error, size; 4108 uint8_t own[NFSV4CL_LOCKNAMELEN + NFSX_V4FHMAX]; 4109 struct nfsclsession *tsep; 4110 4111 nfscl_reqstart(nd, NFSPROC_LOCK, nmp, nfhp, fhlen, NULL, NULL, 0, 0); 4112 NFSM_BUILD(tl, u_int32_t *, 7 * NFSX_UNSIGNED); 4113 if (type == F_RDLCK) 4114 *tl++ = txdr_unsigned(NFSV4LOCKT_READ); 4115 else 4116 *tl++ = txdr_unsigned(NFSV4LOCKT_WRITE); 4117 *tl++ = txdr_unsigned(reclaim); 4118 txdr_hyper(off, tl); 4119 tl += 2; 4120 txdr_hyper(len, tl); 4121 tl += 2; 4122 if (newone) { 4123 *tl = newnfs_true; 4124 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID + 4125 2 * NFSX_UNSIGNED + NFSX_HYPER); 4126 *tl++ = txdr_unsigned(lp->nfsl_open->nfso_own->nfsow_seqid); 4127 if (NFSHASNFSV4N(nmp)) 4128 *tl++ = 0; 4129 else 4130 *tl++ = lp->nfsl_open->nfso_stateid.seqid; 4131 *tl++ = lp->nfsl_open->nfso_stateid.other[0]; 4132 *tl++ = lp->nfsl_open->nfso_stateid.other[1]; 4133 *tl++ = lp->nfsl_open->nfso_stateid.other[2]; 4134 *tl++ = txdr_unsigned(lp->nfsl_seqid); 4135 tsep = nfsmnt_mdssession(nmp); 4136 *tl++ = tsep->nfsess_clientid.lval[0]; 4137 *tl = tsep->nfsess_clientid.lval[1]; 4138 NFSBCOPY(lp->nfsl_owner, own, NFSV4CL_LOCKNAMELEN); 4139 NFSBCOPY(nfhp, &own[NFSV4CL_LOCKNAMELEN], fhlen); 4140 (void)nfsm_strtom(nd, own, NFSV4CL_LOCKNAMELEN + fhlen); 4141 } else { 4142 *tl = newnfs_false; 4143 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID + NFSX_UNSIGNED); 4144 if (NFSHASNFSV4N(nmp)) 4145 *tl++ = 0; 4146 else 4147 *tl++ = lp->nfsl_stateid.seqid; 4148 *tl++ = lp->nfsl_stateid.other[0]; 4149 *tl++ = lp->nfsl_stateid.other[1]; 4150 *tl++ = lp->nfsl_stateid.other[2]; 4151 *tl = txdr_unsigned(lp->nfsl_seqid); 4152 if (nfstest_outofseq && 4153 (arc4random() % nfstest_outofseq) == 0) 4154 *tl = txdr_unsigned(lp->nfsl_seqid + 1); 4155 } 4156 if (syscred) 4157 nd->nd_flag |= ND_USEGSSNAME; 4158 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, vp, p, cred, 4159 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4160 if (error) 4161 return (error); 4162 if (newone) 4163 NFSCL_INCRSEQID(lp->nfsl_open->nfso_own->nfsow_seqid, nd); 4164 NFSCL_INCRSEQID(lp->nfsl_seqid, nd); 4165 if (nd->nd_repstat == 0) { 4166 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID); 4167 lp->nfsl_stateid.seqid = *tl++; 4168 lp->nfsl_stateid.other[0] = *tl++; 4169 lp->nfsl_stateid.other[1] = *tl++; 4170 lp->nfsl_stateid.other[2] = *tl; 4171 } else if (nd->nd_repstat == NFSERR_DENIED) { 4172 NFSM_DISSECT(tl, u_int32_t *, 8 * NFSX_UNSIGNED); 4173 size = fxdr_unsigned(int, *(tl + 7)); 4174 if (size < 0 || size > NFSV4_OPAQUELIMIT) 4175 error = EBADRPC; 4176 if (!error) 4177 error = nfsm_advance(nd, NFSM_RNDUP(size), -1); 4178 } else if (nd->nd_repstat == NFSERR_STALESTATEID) 4179 nfscl_initiate_recovery(lp->nfsl_open->nfso_own->nfsow_clp); 4180 nfsmout: 4181 mbuf_freem(nd->nd_mrep); 4182 return (error); 4183 } 4184 4185 /* 4186 * nfs statfs rpc 4187 * (always called with the vp for the mount point) 4188 */ 4189 APPLESTATIC int 4190 nfsrpc_statfs(vnode_t vp, struct nfsstatfs *sbp, struct nfsfsinfo *fsp, 4191 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, 4192 void *stuff) 4193 { 4194 u_int32_t *tl = NULL; 4195 struct nfsrv_descript nfsd, *nd = &nfsd; 4196 struct nfsmount *nmp; 4197 nfsattrbit_t attrbits; 4198 int error; 4199 4200 *attrflagp = 0; 4201 nmp = VFSTONFS(vnode_mount(vp)); 4202 if (NFSHASNFSV4(nmp)) { 4203 /* 4204 * For V4, you actually do a getattr. 4205 */ 4206 NFSCL_REQSTART(nd, NFSPROC_GETATTR, vp); 4207 NFSSTATFS_GETATTRBIT(&attrbits); 4208 (void) nfsrv_putattrbit(nd, &attrbits); 4209 nd->nd_flag |= ND_USEGSSNAME; 4210 error = nfscl_request(nd, vp, p, cred, stuff); 4211 if (error) 4212 return (error); 4213 if (nd->nd_repstat == 0) { 4214 error = nfsv4_loadattr(nd, NULL, nap, NULL, NULL, 0, 4215 NULL, NULL, sbp, fsp, NULL, 0, NULL, NULL, NULL, p, 4216 cred); 4217 if (!error) { 4218 nmp->nm_fsid[0] = nap->na_filesid[0]; 4219 nmp->nm_fsid[1] = nap->na_filesid[1]; 4220 NFSSETHASSETFSID(nmp); 4221 *attrflagp = 1; 4222 } 4223 } else { 4224 error = nd->nd_repstat; 4225 } 4226 if (error) 4227 goto nfsmout; 4228 } else { 4229 NFSCL_REQSTART(nd, NFSPROC_FSSTAT, vp); 4230 error = nfscl_request(nd, vp, p, cred, stuff); 4231 if (error) 4232 return (error); 4233 if (nd->nd_flag & ND_NFSV3) { 4234 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 4235 if (error) 4236 goto nfsmout; 4237 } 4238 if (nd->nd_repstat) { 4239 error = nd->nd_repstat; 4240 goto nfsmout; 4241 } 4242 NFSM_DISSECT(tl, u_int32_t *, 4243 NFSX_STATFS(nd->nd_flag & ND_NFSV3)); 4244 } 4245 if (NFSHASNFSV3(nmp)) { 4246 sbp->sf_tbytes = fxdr_hyper(tl); tl += 2; 4247 sbp->sf_fbytes = fxdr_hyper(tl); tl += 2; 4248 sbp->sf_abytes = fxdr_hyper(tl); tl += 2; 4249 sbp->sf_tfiles = fxdr_hyper(tl); tl += 2; 4250 sbp->sf_ffiles = fxdr_hyper(tl); tl += 2; 4251 sbp->sf_afiles = fxdr_hyper(tl); tl += 2; 4252 sbp->sf_invarsec = fxdr_unsigned(u_int32_t, *tl); 4253 } else if (NFSHASNFSV4(nmp) == 0) { 4254 sbp->sf_tsize = fxdr_unsigned(u_int32_t, *tl++); 4255 sbp->sf_bsize = fxdr_unsigned(u_int32_t, *tl++); 4256 sbp->sf_blocks = fxdr_unsigned(u_int32_t, *tl++); 4257 sbp->sf_bfree = fxdr_unsigned(u_int32_t, *tl++); 4258 sbp->sf_bavail = fxdr_unsigned(u_int32_t, *tl); 4259 } 4260 nfsmout: 4261 mbuf_freem(nd->nd_mrep); 4262 return (error); 4263 } 4264 4265 /* 4266 * nfs pathconf rpc 4267 */ 4268 APPLESTATIC int 4269 nfsrpc_pathconf(vnode_t vp, struct nfsv3_pathconf *pc, 4270 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, 4271 void *stuff) 4272 { 4273 struct nfsrv_descript nfsd, *nd = &nfsd; 4274 struct nfsmount *nmp; 4275 u_int32_t *tl; 4276 nfsattrbit_t attrbits; 4277 int error; 4278 4279 *attrflagp = 0; 4280 nmp = VFSTONFS(vnode_mount(vp)); 4281 if (NFSHASNFSV4(nmp)) { 4282 /* 4283 * For V4, you actually do a getattr. 4284 */ 4285 NFSCL_REQSTART(nd, NFSPROC_GETATTR, vp); 4286 NFSPATHCONF_GETATTRBIT(&attrbits); 4287 (void) nfsrv_putattrbit(nd, &attrbits); 4288 nd->nd_flag |= ND_USEGSSNAME; 4289 error = nfscl_request(nd, vp, p, cred, stuff); 4290 if (error) 4291 return (error); 4292 if (nd->nd_repstat == 0) { 4293 error = nfsv4_loadattr(nd, NULL, nap, NULL, NULL, 0, 4294 pc, NULL, NULL, NULL, NULL, 0, NULL, NULL, NULL, p, 4295 cred); 4296 if (!error) 4297 *attrflagp = 1; 4298 } else { 4299 error = nd->nd_repstat; 4300 } 4301 } else { 4302 NFSCL_REQSTART(nd, NFSPROC_PATHCONF, vp); 4303 error = nfscl_request(nd, vp, p, cred, stuff); 4304 if (error) 4305 return (error); 4306 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 4307 if (nd->nd_repstat && !error) 4308 error = nd->nd_repstat; 4309 if (!error) { 4310 NFSM_DISSECT(tl, u_int32_t *, NFSX_V3PATHCONF); 4311 pc->pc_linkmax = fxdr_unsigned(u_int32_t, *tl++); 4312 pc->pc_namemax = fxdr_unsigned(u_int32_t, *tl++); 4313 pc->pc_notrunc = fxdr_unsigned(u_int32_t, *tl++); 4314 pc->pc_chownrestricted = 4315 fxdr_unsigned(u_int32_t, *tl++); 4316 pc->pc_caseinsensitive = 4317 fxdr_unsigned(u_int32_t, *tl++); 4318 pc->pc_casepreserving = fxdr_unsigned(u_int32_t, *tl); 4319 } 4320 } 4321 nfsmout: 4322 mbuf_freem(nd->nd_mrep); 4323 return (error); 4324 } 4325 4326 /* 4327 * nfs version 3 fsinfo rpc call 4328 */ 4329 APPLESTATIC int 4330 nfsrpc_fsinfo(vnode_t vp, struct nfsfsinfo *fsp, struct ucred *cred, 4331 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff) 4332 { 4333 u_int32_t *tl; 4334 struct nfsrv_descript nfsd, *nd = &nfsd; 4335 int error; 4336 4337 *attrflagp = 0; 4338 NFSCL_REQSTART(nd, NFSPROC_FSINFO, vp); 4339 error = nfscl_request(nd, vp, p, cred, stuff); 4340 if (error) 4341 return (error); 4342 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 4343 if (nd->nd_repstat && !error) 4344 error = nd->nd_repstat; 4345 if (!error) { 4346 NFSM_DISSECT(tl, u_int32_t *, NFSX_V3FSINFO); 4347 fsp->fs_rtmax = fxdr_unsigned(u_int32_t, *tl++); 4348 fsp->fs_rtpref = fxdr_unsigned(u_int32_t, *tl++); 4349 fsp->fs_rtmult = fxdr_unsigned(u_int32_t, *tl++); 4350 fsp->fs_wtmax = fxdr_unsigned(u_int32_t, *tl++); 4351 fsp->fs_wtpref = fxdr_unsigned(u_int32_t, *tl++); 4352 fsp->fs_wtmult = fxdr_unsigned(u_int32_t, *tl++); 4353 fsp->fs_dtpref = fxdr_unsigned(u_int32_t, *tl++); 4354 fsp->fs_maxfilesize = fxdr_hyper(tl); 4355 tl += 2; 4356 fxdr_nfsv3time(tl, &fsp->fs_timedelta); 4357 tl += 2; 4358 fsp->fs_properties = fxdr_unsigned(u_int32_t, *tl); 4359 } 4360 nfsmout: 4361 mbuf_freem(nd->nd_mrep); 4362 return (error); 4363 } 4364 4365 /* 4366 * This function performs the Renew RPC. 4367 */ 4368 APPLESTATIC int 4369 nfsrpc_renew(struct nfsclclient *clp, struct nfsclds *dsp, struct ucred *cred, 4370 NFSPROC_T *p) 4371 { 4372 u_int32_t *tl; 4373 struct nfsrv_descript nfsd; 4374 struct nfsrv_descript *nd = &nfsd; 4375 struct nfsmount *nmp; 4376 int error; 4377 struct nfssockreq *nrp; 4378 struct nfsclsession *tsep; 4379 4380 nmp = clp->nfsc_nmp; 4381 if (nmp == NULL) 4382 return (0); 4383 if (dsp == NULL) 4384 nfscl_reqstart(nd, NFSPROC_RENEW, nmp, NULL, 0, NULL, NULL, 0, 4385 0); 4386 else 4387 nfscl_reqstart(nd, NFSPROC_RENEW, nmp, NULL, 0, NULL, 4388 &dsp->nfsclds_sess, 0, 0); 4389 if (!NFSHASNFSV4N(nmp)) { 4390 /* NFSv4.1 just uses a Sequence Op and not a Renew. */ 4391 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 4392 tsep = nfsmnt_mdssession(nmp); 4393 *tl++ = tsep->nfsess_clientid.lval[0]; 4394 *tl = tsep->nfsess_clientid.lval[1]; 4395 } 4396 nrp = NULL; 4397 if (dsp != NULL) 4398 nrp = dsp->nfsclds_sockp; 4399 if (nrp == NULL) 4400 /* If NULL, use the MDS socket. */ 4401 nrp = &nmp->nm_sockreq; 4402 nd->nd_flag |= ND_USEGSSNAME; 4403 if (dsp == NULL) 4404 error = newnfs_request(nd, nmp, NULL, nrp, NULL, p, cred, 4405 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4406 else 4407 error = newnfs_request(nd, nmp, NULL, nrp, NULL, p, cred, 4408 NFS_PROG, NFS_VER4, NULL, 1, NULL, &dsp->nfsclds_sess); 4409 if (error) 4410 return (error); 4411 error = nd->nd_repstat; 4412 mbuf_freem(nd->nd_mrep); 4413 return (error); 4414 } 4415 4416 /* 4417 * This function performs the Releaselockowner RPC. 4418 */ 4419 APPLESTATIC int 4420 nfsrpc_rellockown(struct nfsmount *nmp, struct nfscllockowner *lp, 4421 uint8_t *fh, int fhlen, struct ucred *cred, NFSPROC_T *p) 4422 { 4423 struct nfsrv_descript nfsd, *nd = &nfsd; 4424 u_int32_t *tl; 4425 int error; 4426 uint8_t own[NFSV4CL_LOCKNAMELEN + NFSX_V4FHMAX]; 4427 struct nfsclsession *tsep; 4428 4429 if (NFSHASNFSV4N(nmp)) { 4430 /* For NFSv4.1, do a FreeStateID. */ 4431 nfscl_reqstart(nd, NFSPROC_FREESTATEID, nmp, NULL, 0, NULL, 4432 NULL, 0, 0); 4433 nfsm_stateidtom(nd, &lp->nfsl_stateid, NFSSTATEID_PUTSTATEID); 4434 } else { 4435 nfscl_reqstart(nd, NFSPROC_RELEASELCKOWN, nmp, NULL, 0, NULL, 4436 NULL, 0, 0); 4437 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 4438 tsep = nfsmnt_mdssession(nmp); 4439 *tl++ = tsep->nfsess_clientid.lval[0]; 4440 *tl = tsep->nfsess_clientid.lval[1]; 4441 NFSBCOPY(lp->nfsl_owner, own, NFSV4CL_LOCKNAMELEN); 4442 NFSBCOPY(fh, &own[NFSV4CL_LOCKNAMELEN], fhlen); 4443 (void)nfsm_strtom(nd, own, NFSV4CL_LOCKNAMELEN + fhlen); 4444 } 4445 nd->nd_flag |= ND_USEGSSNAME; 4446 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 4447 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4448 if (error) 4449 return (error); 4450 error = nd->nd_repstat; 4451 mbuf_freem(nd->nd_mrep); 4452 return (error); 4453 } 4454 4455 /* 4456 * This function performs the Compound to get the mount pt FH. 4457 */ 4458 APPLESTATIC int 4459 nfsrpc_getdirpath(struct nfsmount *nmp, u_char *dirpath, struct ucred *cred, 4460 NFSPROC_T *p) 4461 { 4462 u_int32_t *tl; 4463 struct nfsrv_descript nfsd; 4464 struct nfsrv_descript *nd = &nfsd; 4465 u_char *cp, *cp2; 4466 int error, cnt, len, setnil; 4467 u_int32_t *opcntp; 4468 4469 nfscl_reqstart(nd, NFSPROC_PUTROOTFH, nmp, NULL, 0, &opcntp, NULL, 0, 4470 0); 4471 cp = dirpath; 4472 cnt = 0; 4473 do { 4474 setnil = 0; 4475 while (*cp == '/') 4476 cp++; 4477 cp2 = cp; 4478 while (*cp2 != '\0' && *cp2 != '/') 4479 cp2++; 4480 if (*cp2 == '/') { 4481 setnil = 1; 4482 *cp2 = '\0'; 4483 } 4484 if (cp2 != cp) { 4485 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 4486 *tl = txdr_unsigned(NFSV4OP_LOOKUP); 4487 nfsm_strtom(nd, cp, strlen(cp)); 4488 cnt++; 4489 } 4490 if (setnil) 4491 *cp2++ = '/'; 4492 cp = cp2; 4493 } while (*cp != '\0'); 4494 if (NFSHASNFSV4N(nmp)) 4495 /* Has a Sequence Op done by nfscl_reqstart(). */ 4496 *opcntp = txdr_unsigned(3 + cnt); 4497 else 4498 *opcntp = txdr_unsigned(2 + cnt); 4499 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 4500 *tl = txdr_unsigned(NFSV4OP_GETFH); 4501 nd->nd_flag |= ND_USEGSSNAME; 4502 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 4503 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4504 if (error) 4505 return (error); 4506 if (nd->nd_repstat == 0) { 4507 NFSM_DISSECT(tl, u_int32_t *, (3 + 2 * cnt) * NFSX_UNSIGNED); 4508 tl += (2 + 2 * cnt); 4509 if ((len = fxdr_unsigned(int, *tl)) <= 0 || 4510 len > NFSX_FHMAX) { 4511 nd->nd_repstat = NFSERR_BADXDR; 4512 } else { 4513 nd->nd_repstat = nfsrv_mtostr(nd, nmp->nm_fh, len); 4514 if (nd->nd_repstat == 0) 4515 nmp->nm_fhsize = len; 4516 } 4517 } 4518 error = nd->nd_repstat; 4519 nfsmout: 4520 mbuf_freem(nd->nd_mrep); 4521 return (error); 4522 } 4523 4524 /* 4525 * This function performs the Delegreturn RPC. 4526 */ 4527 APPLESTATIC int 4528 nfsrpc_delegreturn(struct nfscldeleg *dp, struct ucred *cred, 4529 struct nfsmount *nmp, NFSPROC_T *p, int syscred) 4530 { 4531 u_int32_t *tl; 4532 struct nfsrv_descript nfsd; 4533 struct nfsrv_descript *nd = &nfsd; 4534 int error; 4535 4536 nfscl_reqstart(nd, NFSPROC_DELEGRETURN, nmp, dp->nfsdl_fh, 4537 dp->nfsdl_fhlen, NULL, NULL, 0, 0); 4538 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID); 4539 if (NFSHASNFSV4N(nmp)) 4540 *tl++ = 0; 4541 else 4542 *tl++ = dp->nfsdl_stateid.seqid; 4543 *tl++ = dp->nfsdl_stateid.other[0]; 4544 *tl++ = dp->nfsdl_stateid.other[1]; 4545 *tl = dp->nfsdl_stateid.other[2]; 4546 if (syscred) 4547 nd->nd_flag |= ND_USEGSSNAME; 4548 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 4549 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4550 if (error) 4551 return (error); 4552 error = nd->nd_repstat; 4553 mbuf_freem(nd->nd_mrep); 4554 return (error); 4555 } 4556 4557 /* 4558 * nfs getacl call. 4559 */ 4560 APPLESTATIC int 4561 nfsrpc_getacl(vnode_t vp, struct ucred *cred, NFSPROC_T *p, 4562 struct acl *aclp, void *stuff) 4563 { 4564 struct nfsrv_descript nfsd, *nd = &nfsd; 4565 int error; 4566 nfsattrbit_t attrbits; 4567 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 4568 4569 if (nfsrv_useacl == 0 || !NFSHASNFSV4(nmp)) 4570 return (EOPNOTSUPP); 4571 NFSCL_REQSTART(nd, NFSPROC_GETACL, vp); 4572 NFSZERO_ATTRBIT(&attrbits); 4573 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_ACL); 4574 (void) nfsrv_putattrbit(nd, &attrbits); 4575 error = nfscl_request(nd, vp, p, cred, stuff); 4576 if (error) 4577 return (error); 4578 if (!nd->nd_repstat) 4579 error = nfsv4_loadattr(nd, vp, NULL, NULL, NULL, 0, NULL, 4580 NULL, NULL, NULL, aclp, 0, NULL, NULL, NULL, p, cred); 4581 else 4582 error = nd->nd_repstat; 4583 mbuf_freem(nd->nd_mrep); 4584 return (error); 4585 } 4586 4587 /* 4588 * nfs setacl call. 4589 */ 4590 APPLESTATIC int 4591 nfsrpc_setacl(vnode_t vp, struct ucred *cred, NFSPROC_T *p, 4592 struct acl *aclp, void *stuff) 4593 { 4594 int error; 4595 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 4596 4597 if (nfsrv_useacl == 0 || !NFSHASNFSV4(nmp)) 4598 return (EOPNOTSUPP); 4599 error = nfsrpc_setattr(vp, NULL, aclp, cred, p, NULL, NULL, stuff); 4600 return (error); 4601 } 4602 4603 /* 4604 * nfs setacl call. 4605 */ 4606 static int 4607 nfsrpc_setaclrpc(vnode_t vp, struct ucred *cred, NFSPROC_T *p, 4608 struct acl *aclp, nfsv4stateid_t *stateidp, void *stuff) 4609 { 4610 struct nfsrv_descript nfsd, *nd = &nfsd; 4611 int error; 4612 nfsattrbit_t attrbits; 4613 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 4614 4615 if (!NFSHASNFSV4(nmp)) 4616 return (EOPNOTSUPP); 4617 NFSCL_REQSTART(nd, NFSPROC_SETACL, vp); 4618 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID); 4619 NFSZERO_ATTRBIT(&attrbits); 4620 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_ACL); 4621 (void) nfsv4_fillattr(nd, vnode_mount(vp), vp, aclp, NULL, NULL, 0, 4622 &attrbits, NULL, NULL, 0, 0, 0, 0, (uint64_t)0); 4623 error = nfscl_request(nd, vp, p, cred, stuff); 4624 if (error) 4625 return (error); 4626 /* Don't care about the pre/postop attributes */ 4627 mbuf_freem(nd->nd_mrep); 4628 return (nd->nd_repstat); 4629 } 4630 4631 /* 4632 * Do the NFSv4.1 Exchange ID. 4633 */ 4634 int 4635 nfsrpc_exchangeid(struct nfsmount *nmp, struct nfsclclient *clp, 4636 struct nfssockreq *nrp, uint32_t exchflags, struct nfsclds **dspp, 4637 struct ucred *cred, NFSPROC_T *p) 4638 { 4639 uint32_t *tl, v41flags; 4640 struct nfsrv_descript nfsd; 4641 struct nfsrv_descript *nd = &nfsd; 4642 struct nfsclds *dsp; 4643 struct timespec verstime; 4644 int error, len; 4645 4646 *dspp = NULL; 4647 nfscl_reqstart(nd, NFSPROC_EXCHANGEID, nmp, NULL, 0, NULL, NULL, 0, 0); 4648 NFSM_BUILD(tl, uint32_t *, 2 * NFSX_UNSIGNED); 4649 *tl++ = txdr_unsigned(nfsboottime.tv_sec); /* Client owner */ 4650 *tl = txdr_unsigned(clp->nfsc_rev); 4651 (void) nfsm_strtom(nd, clp->nfsc_id, clp->nfsc_idlen); 4652 4653 NFSM_BUILD(tl, uint32_t *, 3 * NFSX_UNSIGNED); 4654 *tl++ = txdr_unsigned(exchflags); 4655 *tl++ = txdr_unsigned(NFSV4EXCH_SP4NONE); 4656 4657 /* Set the implementation id4 */ 4658 *tl = txdr_unsigned(1); 4659 (void) nfsm_strtom(nd, "freebsd.org", strlen("freebsd.org")); 4660 (void) nfsm_strtom(nd, version, strlen(version)); 4661 NFSM_BUILD(tl, uint32_t *, NFSX_V4TIME); 4662 verstime.tv_sec = 1293840000; /* Jan 1, 2011 */ 4663 verstime.tv_nsec = 0; 4664 txdr_nfsv4time(&verstime, tl); 4665 nd->nd_flag |= ND_USEGSSNAME; 4666 error = newnfs_request(nd, nmp, NULL, nrp, NULL, p, cred, 4667 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4668 NFSCL_DEBUG(1, "exchangeid err=%d reps=%d\n", error, 4669 (int)nd->nd_repstat); 4670 if (error != 0) 4671 return (error); 4672 if (nd->nd_repstat == 0) { 4673 NFSM_DISSECT(tl, uint32_t *, 6 * NFSX_UNSIGNED + NFSX_HYPER); 4674 len = fxdr_unsigned(int, *(tl + 7)); 4675 if (len < 0 || len > NFSV4_OPAQUELIMIT) { 4676 error = NFSERR_BADXDR; 4677 goto nfsmout; 4678 } 4679 dsp = malloc(sizeof(struct nfsclds) + len + 1, M_NFSCLDS, 4680 M_WAITOK | M_ZERO); 4681 dsp->nfsclds_expire = NFSD_MONOSEC + clp->nfsc_renew; 4682 dsp->nfsclds_servownlen = len; 4683 dsp->nfsclds_sess.nfsess_clientid.lval[0] = *tl++; 4684 dsp->nfsclds_sess.nfsess_clientid.lval[1] = *tl++; 4685 dsp->nfsclds_sess.nfsess_sequenceid = 4686 fxdr_unsigned(uint32_t, *tl++); 4687 v41flags = fxdr_unsigned(uint32_t, *tl); 4688 if ((v41flags & NFSV4EXCH_USEPNFSMDS) != 0 && 4689 NFSHASPNFSOPT(nmp)) { 4690 NFSCL_DEBUG(1, "set PNFS\n"); 4691 NFSLOCKMNT(nmp); 4692 nmp->nm_state |= NFSSTA_PNFS; 4693 NFSUNLOCKMNT(nmp); 4694 dsp->nfsclds_flags |= NFSCLDS_MDS; 4695 } 4696 if ((v41flags & NFSV4EXCH_USEPNFSDS) != 0) 4697 dsp->nfsclds_flags |= NFSCLDS_DS; 4698 if (len > 0) 4699 nd->nd_repstat = nfsrv_mtostr(nd, 4700 dsp->nfsclds_serverown, len); 4701 if (nd->nd_repstat == 0) { 4702 mtx_init(&dsp->nfsclds_mtx, "nfsds", NULL, MTX_DEF); 4703 mtx_init(&dsp->nfsclds_sess.nfsess_mtx, "nfssession", 4704 NULL, MTX_DEF); 4705 nfscl_initsessionslots(&dsp->nfsclds_sess); 4706 *dspp = dsp; 4707 } else 4708 free(dsp, M_NFSCLDS); 4709 } 4710 error = nd->nd_repstat; 4711 nfsmout: 4712 mbuf_freem(nd->nd_mrep); 4713 return (error); 4714 } 4715 4716 /* 4717 * Do the NFSv4.1 Create Session. 4718 */ 4719 int 4720 nfsrpc_createsession(struct nfsmount *nmp, struct nfsclsession *sep, 4721 struct nfssockreq *nrp, uint32_t sequenceid, int mds, struct ucred *cred, 4722 NFSPROC_T *p) 4723 { 4724 uint32_t crflags, maxval, *tl; 4725 struct nfsrv_descript nfsd; 4726 struct nfsrv_descript *nd = &nfsd; 4727 int error, irdcnt; 4728 4729 /* Make sure nm_rsize, nm_wsize is set. */ 4730 if (nmp->nm_rsize > NFS_MAXBSIZE || nmp->nm_rsize == 0) 4731 nmp->nm_rsize = NFS_MAXBSIZE; 4732 if (nmp->nm_wsize > NFS_MAXBSIZE || nmp->nm_wsize == 0) 4733 nmp->nm_wsize = NFS_MAXBSIZE; 4734 nfscl_reqstart(nd, NFSPROC_CREATESESSION, nmp, NULL, 0, NULL, NULL, 0, 4735 0); 4736 NFSM_BUILD(tl, uint32_t *, 4 * NFSX_UNSIGNED); 4737 *tl++ = sep->nfsess_clientid.lval[0]; 4738 *tl++ = sep->nfsess_clientid.lval[1]; 4739 *tl++ = txdr_unsigned(sequenceid); 4740 crflags = (NFSMNT_RDONLY(nmp->nm_mountp) ? 0 : NFSV4CRSESS_PERSIST); 4741 if (nfscl_enablecallb != 0 && nfs_numnfscbd > 0 && mds != 0) 4742 crflags |= NFSV4CRSESS_CONNBACKCHAN; 4743 *tl = txdr_unsigned(crflags); 4744 4745 /* Fill in fore channel attributes. */ 4746 NFSM_BUILD(tl, uint32_t *, 7 * NFSX_UNSIGNED); 4747 *tl++ = 0; /* Header pad size */ 4748 *tl++ = txdr_unsigned(nmp->nm_wsize + NFS_MAXXDR);/* Max request size */ 4749 *tl++ = txdr_unsigned(nmp->nm_rsize + NFS_MAXXDR);/* Max reply size */ 4750 *tl++ = txdr_unsigned(4096); /* Max response size cached */ 4751 *tl++ = txdr_unsigned(20); /* Max operations */ 4752 *tl++ = txdr_unsigned(64); /* Max slots */ 4753 *tl = 0; /* No rdma ird */ 4754 4755 /* Fill in back channel attributes. */ 4756 NFSM_BUILD(tl, uint32_t *, 7 * NFSX_UNSIGNED); 4757 *tl++ = 0; /* Header pad size */ 4758 *tl++ = txdr_unsigned(10000); /* Max request size */ 4759 *tl++ = txdr_unsigned(10000); /* Max response size */ 4760 *tl++ = txdr_unsigned(4096); /* Max response size cached */ 4761 *tl++ = txdr_unsigned(4); /* Max operations */ 4762 *tl++ = txdr_unsigned(NFSV4_CBSLOTS); /* Max slots */ 4763 *tl = 0; /* No rdma ird */ 4764 4765 NFSM_BUILD(tl, uint32_t *, 8 * NFSX_UNSIGNED); 4766 *tl++ = txdr_unsigned(NFS_CALLBCKPROG); /* Call back prog # */ 4767 4768 /* Allow AUTH_SYS callbacks as uid, gid == 0. */ 4769 *tl++ = txdr_unsigned(1); /* Auth_sys only */ 4770 *tl++ = txdr_unsigned(AUTH_SYS); /* AUTH_SYS type */ 4771 *tl++ = txdr_unsigned(nfsboottime.tv_sec); /* time stamp */ 4772 *tl++ = 0; /* Null machine name */ 4773 *tl++ = 0; /* Uid == 0 */ 4774 *tl++ = 0; /* Gid == 0 */ 4775 *tl = 0; /* No additional gids */ 4776 nd->nd_flag |= ND_USEGSSNAME; 4777 error = newnfs_request(nd, nmp, NULL, nrp, NULL, p, cred, NFS_PROG, 4778 NFS_VER4, NULL, 1, NULL, NULL); 4779 if (error != 0) 4780 return (error); 4781 if (nd->nd_repstat == 0) { 4782 NFSM_DISSECT(tl, uint32_t *, NFSX_V4SESSIONID + 4783 2 * NFSX_UNSIGNED); 4784 bcopy(tl, sep->nfsess_sessionid, NFSX_V4SESSIONID); 4785 tl += NFSX_V4SESSIONID / NFSX_UNSIGNED; 4786 sep->nfsess_sequenceid = fxdr_unsigned(uint32_t, *tl++); 4787 crflags = fxdr_unsigned(uint32_t, *tl); 4788 if ((crflags & NFSV4CRSESS_PERSIST) != 0 && mds != 0) { 4789 NFSLOCKMNT(nmp); 4790 nmp->nm_state |= NFSSTA_SESSPERSIST; 4791 NFSUNLOCKMNT(nmp); 4792 } 4793 4794 /* Get the fore channel slot count. */ 4795 NFSM_DISSECT(tl, uint32_t *, 7 * NFSX_UNSIGNED); 4796 tl++; /* Skip the header pad size. */ 4797 4798 /* Make sure nm_wsize is small enough. */ 4799 maxval = fxdr_unsigned(uint32_t, *tl++); 4800 while (maxval < nmp->nm_wsize + NFS_MAXXDR) { 4801 if (nmp->nm_wsize > 8096) 4802 nmp->nm_wsize /= 2; 4803 else 4804 break; 4805 } 4806 4807 /* Make sure nm_rsize is small enough. */ 4808 maxval = fxdr_unsigned(uint32_t, *tl++); 4809 while (maxval < nmp->nm_rsize + NFS_MAXXDR) { 4810 if (nmp->nm_rsize > 8096) 4811 nmp->nm_rsize /= 2; 4812 else 4813 break; 4814 } 4815 4816 sep->nfsess_maxcache = fxdr_unsigned(int, *tl++); 4817 tl++; 4818 sep->nfsess_foreslots = fxdr_unsigned(uint16_t, *tl++); 4819 NFSCL_DEBUG(4, "fore slots=%d\n", (int)sep->nfsess_foreslots); 4820 irdcnt = fxdr_unsigned(int, *tl); 4821 if (irdcnt > 0) 4822 NFSM_DISSECT(tl, uint32_t *, irdcnt * NFSX_UNSIGNED); 4823 4824 /* and the back channel slot count. */ 4825 NFSM_DISSECT(tl, uint32_t *, 7 * NFSX_UNSIGNED); 4826 tl += 5; 4827 sep->nfsess_backslots = fxdr_unsigned(uint16_t, *tl); 4828 NFSCL_DEBUG(4, "back slots=%d\n", (int)sep->nfsess_backslots); 4829 } 4830 error = nd->nd_repstat; 4831 nfsmout: 4832 mbuf_freem(nd->nd_mrep); 4833 return (error); 4834 } 4835 4836 /* 4837 * Do the NFSv4.1 Destroy Session. 4838 */ 4839 int 4840 nfsrpc_destroysession(struct nfsmount *nmp, struct nfsclclient *clp, 4841 struct ucred *cred, NFSPROC_T *p) 4842 { 4843 uint32_t *tl; 4844 struct nfsrv_descript nfsd; 4845 struct nfsrv_descript *nd = &nfsd; 4846 int error; 4847 struct nfsclsession *tsep; 4848 4849 nfscl_reqstart(nd, NFSPROC_DESTROYSESSION, nmp, NULL, 0, NULL, NULL, 0, 4850 0); 4851 NFSM_BUILD(tl, uint32_t *, NFSX_V4SESSIONID); 4852 tsep = nfsmnt_mdssession(nmp); 4853 bcopy(tsep->nfsess_sessionid, tl, NFSX_V4SESSIONID); 4854 nd->nd_flag |= ND_USEGSSNAME; 4855 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 4856 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4857 if (error != 0) 4858 return (error); 4859 error = nd->nd_repstat; 4860 mbuf_freem(nd->nd_mrep); 4861 return (error); 4862 } 4863 4864 /* 4865 * Do the NFSv4.1 Destroy Client. 4866 */ 4867 int 4868 nfsrpc_destroyclient(struct nfsmount *nmp, struct nfsclclient *clp, 4869 struct ucred *cred, NFSPROC_T *p) 4870 { 4871 uint32_t *tl; 4872 struct nfsrv_descript nfsd; 4873 struct nfsrv_descript *nd = &nfsd; 4874 int error; 4875 struct nfsclsession *tsep; 4876 4877 nfscl_reqstart(nd, NFSPROC_DESTROYCLIENT, nmp, NULL, 0, NULL, NULL, 0, 4878 0); 4879 NFSM_BUILD(tl, uint32_t *, 2 * NFSX_UNSIGNED); 4880 tsep = nfsmnt_mdssession(nmp); 4881 *tl++ = tsep->nfsess_clientid.lval[0]; 4882 *tl = tsep->nfsess_clientid.lval[1]; 4883 nd->nd_flag |= ND_USEGSSNAME; 4884 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 4885 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4886 if (error != 0) 4887 return (error); 4888 error = nd->nd_repstat; 4889 mbuf_freem(nd->nd_mrep); 4890 return (error); 4891 } 4892 4893 /* 4894 * Do the NFSv4.1 LayoutGet. 4895 */ 4896 static int 4897 nfsrpc_layoutget(struct nfsmount *nmp, uint8_t *fhp, int fhlen, int iomode, 4898 uint64_t offset, uint64_t len, uint64_t minlen, int layouttype, 4899 int layoutlen, nfsv4stateid_t *stateidp, int *retonclosep, 4900 struct nfsclflayouthead *flhp, struct ucred *cred, NFSPROC_T *p, 4901 void *stuff) 4902 { 4903 struct nfsrv_descript nfsd, *nd = &nfsd; 4904 int error; 4905 4906 nfscl_reqstart(nd, NFSPROC_LAYOUTGET, nmp, fhp, fhlen, NULL, NULL, 0, 4907 0); 4908 nfsrv_setuplayoutget(nd, iomode, offset, len, minlen, stateidp, 4909 layouttype, layoutlen, 0); 4910 nd->nd_flag |= ND_USEGSSNAME; 4911 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 4912 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4913 NFSCL_DEBUG(4, "layget err=%d st=%d\n", error, nd->nd_repstat); 4914 if (error != 0) 4915 return (error); 4916 if (nd->nd_repstat == 0) 4917 error = nfsrv_parselayoutget(nd, stateidp, retonclosep, flhp); 4918 if (error == 0 && nd->nd_repstat != 0) 4919 error = nd->nd_repstat; 4920 mbuf_freem(nd->nd_mrep); 4921 return (error); 4922 } 4923 4924 /* 4925 * Do the NFSv4.1 Get Device Info. 4926 */ 4927 int 4928 nfsrpc_getdeviceinfo(struct nfsmount *nmp, uint8_t *deviceid, int layouttype, 4929 uint32_t *notifybitsp, struct nfscldevinfo **ndip, struct ucred *cred, 4930 NFSPROC_T *p) 4931 { 4932 uint32_t cnt, *tl, vers, minorvers; 4933 struct nfsrv_descript nfsd; 4934 struct nfsrv_descript *nd = &nfsd; 4935 struct sockaddr_in sin, ssin; 4936 struct sockaddr_in6 sin6, ssin6; 4937 struct nfsclds *dsp = NULL, **dspp, **gotdspp; 4938 struct nfscldevinfo *ndi; 4939 int addrcnt = 0, bitcnt, error, gotvers, i, isudp, j, stripecnt; 4940 uint8_t stripeindex; 4941 sa_family_t af, safilled; 4942 4943 *ndip = NULL; 4944 ndi = NULL; 4945 gotdspp = NULL; 4946 nfscl_reqstart(nd, NFSPROC_GETDEVICEINFO, nmp, NULL, 0, NULL, NULL, 0, 4947 0); 4948 NFSM_BUILD(tl, uint32_t *, NFSX_V4DEVICEID + 3 * NFSX_UNSIGNED); 4949 NFSBCOPY(deviceid, tl, NFSX_V4DEVICEID); 4950 tl += (NFSX_V4DEVICEID / NFSX_UNSIGNED); 4951 *tl++ = txdr_unsigned(layouttype); 4952 *tl++ = txdr_unsigned(100000); 4953 if (notifybitsp != NULL && *notifybitsp != 0) { 4954 *tl = txdr_unsigned(1); /* One word of bits. */ 4955 NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED); 4956 *tl = txdr_unsigned(*notifybitsp); 4957 } else 4958 *tl = txdr_unsigned(0); 4959 nd->nd_flag |= ND_USEGSSNAME; 4960 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 4961 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4962 if (error != 0) 4963 return (error); 4964 if (nd->nd_repstat == 0) { 4965 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED); 4966 if (layouttype != fxdr_unsigned(int, *tl)) 4967 printf("EEK! devinfo layout type not same!\n"); 4968 if (layouttype == NFSLAYOUT_NFSV4_1_FILES) { 4969 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 4970 stripecnt = fxdr_unsigned(int, *tl); 4971 NFSCL_DEBUG(4, "stripecnt=%d\n", stripecnt); 4972 if (stripecnt < 1 || stripecnt > 4096) { 4973 printf("pNFS File layout devinfo stripecnt %d:" 4974 " out of range\n", stripecnt); 4975 error = NFSERR_BADXDR; 4976 goto nfsmout; 4977 } 4978 NFSM_DISSECT(tl, uint32_t *, (stripecnt + 1) * 4979 NFSX_UNSIGNED); 4980 addrcnt = fxdr_unsigned(int, *(tl + stripecnt)); 4981 NFSCL_DEBUG(4, "addrcnt=%d\n", addrcnt); 4982 if (addrcnt < 1 || addrcnt > 128) { 4983 printf("NFS devinfo addrcnt %d: out of range\n", 4984 addrcnt); 4985 error = NFSERR_BADXDR; 4986 goto nfsmout; 4987 } 4988 4989 /* 4990 * Now we know how many stripe indices and addresses, so 4991 * we can allocate the structure the correct size. 4992 */ 4993 i = (stripecnt * sizeof(uint8_t)) / 4994 sizeof(struct nfsclds *) + 1; 4995 NFSCL_DEBUG(4, "stripeindices=%d\n", i); 4996 ndi = malloc(sizeof(*ndi) + (addrcnt + i) * 4997 sizeof(struct nfsclds *), M_NFSDEVINFO, M_WAITOK | 4998 M_ZERO); 4999 NFSBCOPY(deviceid, ndi->nfsdi_deviceid, 5000 NFSX_V4DEVICEID); 5001 ndi->nfsdi_refcnt = 0; 5002 ndi->nfsdi_flags = NFSDI_FILELAYOUT; 5003 ndi->nfsdi_stripecnt = stripecnt; 5004 ndi->nfsdi_addrcnt = addrcnt; 5005 /* Fill in the stripe indices. */ 5006 for (i = 0; i < stripecnt; i++) { 5007 stripeindex = fxdr_unsigned(uint8_t, *tl++); 5008 NFSCL_DEBUG(4, "stripeind=%d\n", stripeindex); 5009 if (stripeindex >= addrcnt) { 5010 printf("pNFS File Layout devinfo" 5011 " stripeindex %d: too big\n", 5012 (int)stripeindex); 5013 error = NFSERR_BADXDR; 5014 goto nfsmout; 5015 } 5016 nfsfldi_setstripeindex(ndi, i, stripeindex); 5017 } 5018 } else if (layouttype == NFSLAYOUT_FLEXFILE) { 5019 /* For Flex File, we only get one address list. */ 5020 ndi = malloc(sizeof(*ndi) + sizeof(struct nfsclds *), 5021 M_NFSDEVINFO, M_WAITOK | M_ZERO); 5022 NFSBCOPY(deviceid, ndi->nfsdi_deviceid, 5023 NFSX_V4DEVICEID); 5024 ndi->nfsdi_refcnt = 0; 5025 ndi->nfsdi_flags = NFSDI_FLEXFILE; 5026 addrcnt = ndi->nfsdi_addrcnt = 1; 5027 } 5028 5029 /* Now, dissect the server address(es). */ 5030 safilled = AF_UNSPEC; 5031 for (i = 0; i < addrcnt; i++) { 5032 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 5033 cnt = fxdr_unsigned(uint32_t, *tl); 5034 if (cnt == 0) { 5035 printf("NFS devinfo 0 len addrlist\n"); 5036 error = NFSERR_BADXDR; 5037 goto nfsmout; 5038 } 5039 dspp = nfsfldi_addr(ndi, i); 5040 safilled = AF_UNSPEC; 5041 for (j = 0; j < cnt; j++) { 5042 error = nfsv4_getipaddr(nd, &sin, &sin6, &af, 5043 &isudp); 5044 if (error != 0 && error != EPERM) { 5045 error = NFSERR_BADXDR; 5046 goto nfsmout; 5047 } 5048 if (error == 0 && isudp == 0) { 5049 /* 5050 * The priority is: 5051 * - Same address family. 5052 * Save the address and dspp, so that 5053 * the connection can be done after 5054 * parsing is complete. 5055 */ 5056 if (safilled == AF_UNSPEC || 5057 (af == nmp->nm_nam->sa_family && 5058 safilled != nmp->nm_nam->sa_family) 5059 ) { 5060 if (af == AF_INET) 5061 ssin = sin; 5062 else 5063 ssin6 = sin6; 5064 safilled = af; 5065 gotdspp = dspp; 5066 } 5067 } 5068 } 5069 } 5070 5071 gotvers = NFS_VER4; /* Always NFSv4 for File Layout. */ 5072 /* For Flex File, we will take one of the versions to use. */ 5073 if (layouttype == NFSLAYOUT_FLEXFILE) { 5074 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 5075 j = fxdr_unsigned(int, *tl); 5076 if (j < 1 || j > NFSDEV_MAXVERS) { 5077 printf("pNFS: too many versions\n"); 5078 error = NFSERR_BADXDR; 5079 goto nfsmout; 5080 } 5081 gotvers = 0; 5082 for (i = 0; i < j; i++) { 5083 NFSM_DISSECT(tl, uint32_t *, 5 * NFSX_UNSIGNED); 5084 vers = fxdr_unsigned(uint32_t, *tl++); 5085 minorvers = fxdr_unsigned(uint32_t, *tl++); 5086 if ((vers == NFS_VER4 && minorvers == 5087 NFSV41_MINORVERSION) || (vers == NFS_VER3 && 5088 gotvers == 0)) { 5089 gotvers = vers; 5090 /* We'll take this one. */ 5091 ndi->nfsdi_versindex = i; 5092 ndi->nfsdi_vers = vers; 5093 ndi->nfsdi_minorvers = minorvers; 5094 ndi->nfsdi_rsize = fxdr_unsigned( 5095 uint32_t, *tl++); 5096 ndi->nfsdi_wsize = fxdr_unsigned( 5097 uint32_t, *tl++); 5098 if (*tl == newnfs_true) 5099 ndi->nfsdi_flags |= 5100 NFSDI_TIGHTCOUPLED; 5101 else 5102 ndi->nfsdi_flags &= 5103 ~NFSDI_TIGHTCOUPLED; 5104 } 5105 } 5106 if (gotvers == 0) { 5107 printf("pNFS: no NFSv3 or NFSv4.1\n"); 5108 error = NFSERR_BADXDR; 5109 goto nfsmout; 5110 } 5111 } 5112 5113 /* And the notify bits. */ 5114 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 5115 bitcnt = fxdr_unsigned(int, *tl); 5116 if (bitcnt > 0) { 5117 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 5118 if (notifybitsp != NULL) 5119 *notifybitsp = 5120 fxdr_unsigned(uint32_t, *tl); 5121 } 5122 if (safilled != AF_UNSPEC) { 5123 KASSERT(ndi != NULL, ("ndi is NULL")); 5124 *ndip = ndi; 5125 } else 5126 error = EPERM; 5127 if (error == 0) { 5128 /* 5129 * Now we can do a TCP connection for the correct 5130 * NFS version and IP address. 5131 */ 5132 error = nfsrpc_fillsa(nmp, &ssin, &ssin6, safilled, 5133 gotvers, &dsp, p); 5134 } 5135 if (error == 0) { 5136 KASSERT(gotdspp != NULL, ("gotdspp is NULL")); 5137 *gotdspp = dsp; 5138 } 5139 } 5140 if (nd->nd_repstat != 0 && error == 0) 5141 error = nd->nd_repstat; 5142 nfsmout: 5143 if (error != 0 && ndi != NULL) 5144 nfscl_freedevinfo(ndi); 5145 mbuf_freem(nd->nd_mrep); 5146 return (error); 5147 } 5148 5149 /* 5150 * Do the NFSv4.1 LayoutCommit. 5151 */ 5152 int 5153 nfsrpc_layoutcommit(struct nfsmount *nmp, uint8_t *fh, int fhlen, int reclaim, 5154 uint64_t off, uint64_t len, uint64_t lastbyte, nfsv4stateid_t *stateidp, 5155 int layouttype, struct ucred *cred, NFSPROC_T *p, void *stuff) 5156 { 5157 uint32_t *tl; 5158 struct nfsrv_descript nfsd, *nd = &nfsd; 5159 int error; 5160 5161 nfscl_reqstart(nd, NFSPROC_LAYOUTCOMMIT, nmp, fh, fhlen, NULL, NULL, 5162 0, 0); 5163 NFSM_BUILD(tl, uint32_t *, 5 * NFSX_UNSIGNED + 3 * NFSX_HYPER + 5164 NFSX_STATEID); 5165 txdr_hyper(off, tl); 5166 tl += 2; 5167 txdr_hyper(len, tl); 5168 tl += 2; 5169 if (reclaim != 0) 5170 *tl++ = newnfs_true; 5171 else 5172 *tl++ = newnfs_false; 5173 *tl++ = txdr_unsigned(stateidp->seqid); 5174 *tl++ = stateidp->other[0]; 5175 *tl++ = stateidp->other[1]; 5176 *tl++ = stateidp->other[2]; 5177 *tl++ = newnfs_true; 5178 if (lastbyte < off) 5179 lastbyte = off; 5180 else if (lastbyte >= (off + len)) 5181 lastbyte = off + len - 1; 5182 txdr_hyper(lastbyte, tl); 5183 tl += 2; 5184 *tl++ = newnfs_false; 5185 *tl++ = txdr_unsigned(layouttype); 5186 /* All supported layouts are 0 length. */ 5187 *tl = txdr_unsigned(0); 5188 nd->nd_flag |= ND_USEGSSNAME; 5189 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 5190 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 5191 if (error != 0) 5192 return (error); 5193 error = nd->nd_repstat; 5194 mbuf_freem(nd->nd_mrep); 5195 return (error); 5196 } 5197 5198 /* 5199 * Do the NFSv4.1 LayoutReturn. 5200 */ 5201 int 5202 nfsrpc_layoutreturn(struct nfsmount *nmp, uint8_t *fh, int fhlen, int reclaim, 5203 int layouttype, uint32_t iomode, int layoutreturn, uint64_t offset, 5204 uint64_t len, nfsv4stateid_t *stateidp, struct ucred *cred, NFSPROC_T *p, 5205 void *stuff) 5206 { 5207 uint32_t *tl; 5208 struct nfsrv_descript nfsd, *nd = &nfsd; 5209 int error; 5210 5211 nfscl_reqstart(nd, NFSPROC_LAYOUTRETURN, nmp, fh, fhlen, NULL, NULL, 5212 0, 0); 5213 NFSM_BUILD(tl, uint32_t *, 4 * NFSX_UNSIGNED); 5214 if (reclaim != 0) 5215 *tl++ = newnfs_true; 5216 else 5217 *tl++ = newnfs_false; 5218 *tl++ = txdr_unsigned(layouttype); 5219 *tl++ = txdr_unsigned(iomode); 5220 *tl = txdr_unsigned(layoutreturn); 5221 if (layoutreturn == NFSLAYOUTRETURN_FILE) { 5222 NFSM_BUILD(tl, uint32_t *, 2 * NFSX_HYPER + NFSX_STATEID + 5223 NFSX_UNSIGNED); 5224 txdr_hyper(offset, tl); 5225 tl += 2; 5226 txdr_hyper(len, tl); 5227 tl += 2; 5228 NFSCL_DEBUG(4, "layoutret stseq=%d\n", (int)stateidp->seqid); 5229 *tl++ = txdr_unsigned(stateidp->seqid); 5230 *tl++ = stateidp->other[0]; 5231 *tl++ = stateidp->other[1]; 5232 *tl++ = stateidp->other[2]; 5233 if (layouttype == NFSLAYOUT_NFSV4_1_FILES) 5234 *tl = txdr_unsigned(0); 5235 else if (layouttype == NFSLAYOUT_FLEXFILE) { 5236 *tl = txdr_unsigned(2 * NFSX_UNSIGNED); 5237 NFSM_BUILD(tl, uint32_t *, 2 * NFSX_UNSIGNED); 5238 /* No ioerrs or stats yet. */ 5239 *tl++ = 0; 5240 *tl = 0; 5241 } 5242 } 5243 nd->nd_flag |= ND_USEGSSNAME; 5244 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 5245 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 5246 if (error != 0) 5247 return (error); 5248 if (nd->nd_repstat == 0) { 5249 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 5250 if (*tl != 0) { 5251 NFSM_DISSECT(tl, uint32_t *, NFSX_STATEID); 5252 stateidp->seqid = fxdr_unsigned(uint32_t, *tl++); 5253 stateidp->other[0] = *tl++; 5254 stateidp->other[1] = *tl++; 5255 stateidp->other[2] = *tl; 5256 } 5257 } else 5258 error = nd->nd_repstat; 5259 nfsmout: 5260 mbuf_freem(nd->nd_mrep); 5261 return (error); 5262 } 5263 5264 /* 5265 * Acquire a layout and devinfo, if possible. The caller must have acquired 5266 * a reference count on the nfsclclient structure before calling this. 5267 * Return the layout in lypp with a reference count on it, if successful. 5268 */ 5269 static int 5270 nfsrpc_getlayout(struct nfsmount *nmp, vnode_t vp, struct nfsfh *nfhp, 5271 int iomode, uint32_t *notifybitsp, nfsv4stateid_t *stateidp, uint64_t off, 5272 struct nfscllayout **lypp, struct ucred *cred, NFSPROC_T *p) 5273 { 5274 struct nfscllayout *lyp; 5275 struct nfsclflayout *flp; 5276 struct nfsclflayouthead flh; 5277 int error = 0, islocked, layoutlen, layouttype, recalled, retonclose; 5278 nfsv4stateid_t stateid; 5279 struct nfsclsession *tsep; 5280 5281 *lypp = NULL; 5282 if (NFSHASFLEXFILE(nmp)) 5283 layouttype = NFSLAYOUT_FLEXFILE; 5284 else 5285 layouttype = NFSLAYOUT_NFSV4_1_FILES; 5286 /* 5287 * If lyp is returned non-NULL, there will be a refcnt (shared lock) 5288 * on it, iff flp != NULL or a lock (exclusive lock) on it iff 5289 * flp == NULL. 5290 */ 5291 lyp = nfscl_getlayout(nmp->nm_clp, nfhp->nfh_fh, nfhp->nfh_len, 5292 off, &flp, &recalled); 5293 islocked = 0; 5294 if (lyp == NULL || flp == NULL) { 5295 if (recalled != 0) 5296 return (EIO); 5297 LIST_INIT(&flh); 5298 tsep = nfsmnt_mdssession(nmp); 5299 layoutlen = tsep->nfsess_maxcache - 5300 (NFSX_STATEID + 3 * NFSX_UNSIGNED); 5301 if (lyp == NULL) { 5302 stateid.seqid = 0; 5303 stateid.other[0] = stateidp->other[0]; 5304 stateid.other[1] = stateidp->other[1]; 5305 stateid.other[2] = stateidp->other[2]; 5306 error = nfsrpc_layoutget(nmp, nfhp->nfh_fh, 5307 nfhp->nfh_len, iomode, (uint64_t)0, UINT64_MAX, 5308 (uint64_t)0, layouttype, layoutlen, &stateid, 5309 &retonclose, &flh, cred, p, NULL); 5310 } else { 5311 islocked = 1; 5312 stateid.seqid = lyp->nfsly_stateid.seqid; 5313 stateid.other[0] = lyp->nfsly_stateid.other[0]; 5314 stateid.other[1] = lyp->nfsly_stateid.other[1]; 5315 stateid.other[2] = lyp->nfsly_stateid.other[2]; 5316 error = nfsrpc_layoutget(nmp, nfhp->nfh_fh, 5317 nfhp->nfh_len, iomode, off, UINT64_MAX, 5318 (uint64_t)0, layouttype, layoutlen, &stateid, 5319 &retonclose, &flh, cred, p, NULL); 5320 } 5321 error = nfsrpc_layoutgetres(nmp, vp, nfhp->nfh_fh, 5322 nfhp->nfh_len, &stateid, retonclose, notifybitsp, &lyp, 5323 &flh, layouttype, error, NULL, cred, p); 5324 if (error == 0) 5325 *lypp = lyp; 5326 else if (islocked != 0) 5327 nfscl_rellayout(lyp, 1); 5328 } else 5329 *lypp = lyp; 5330 return (error); 5331 } 5332 5333 /* 5334 * Do a TCP connection plus exchange id and create session. 5335 * If successful, a "struct nfsclds" is linked into the list for the 5336 * mount point and a pointer to it is returned. 5337 */ 5338 static int 5339 nfsrpc_fillsa(struct nfsmount *nmp, struct sockaddr_in *sin, 5340 struct sockaddr_in6 *sin6, sa_family_t af, int vers, struct nfsclds **dspp, 5341 NFSPROC_T *p) 5342 { 5343 struct sockaddr_in *msad, *sad; 5344 struct sockaddr_in6 *msad6, *sad6; 5345 struct nfsclclient *clp; 5346 struct nfssockreq *nrp; 5347 struct nfsclds *dsp, *tdsp; 5348 int error; 5349 enum nfsclds_state retv; 5350 uint32_t sequenceid; 5351 5352 KASSERT(nmp->nm_sockreq.nr_cred != NULL, 5353 ("nfsrpc_fillsa: NULL nr_cred")); 5354 NFSLOCKCLSTATE(); 5355 clp = nmp->nm_clp; 5356 NFSUNLOCKCLSTATE(); 5357 if (clp == NULL) 5358 return (EPERM); 5359 if (af == AF_INET) { 5360 NFSLOCKMNT(nmp); 5361 /* 5362 * Check to see if we already have a session for this 5363 * address that is usable for a DS. 5364 * Note that the MDS's address is in a different place 5365 * than the sessions already acquired for DS's. 5366 */ 5367 msad = (struct sockaddr_in *)nmp->nm_sockreq.nr_nam; 5368 tdsp = TAILQ_FIRST(&nmp->nm_sess); 5369 while (tdsp != NULL) { 5370 if (msad != NULL && msad->sin_family == AF_INET && 5371 sin->sin_addr.s_addr == msad->sin_addr.s_addr && 5372 sin->sin_port == msad->sin_port && 5373 (tdsp->nfsclds_flags & NFSCLDS_DS) != 0 && 5374 tdsp->nfsclds_sess.nfsess_defunct == 0) { 5375 *dspp = tdsp; 5376 NFSUNLOCKMNT(nmp); 5377 NFSCL_DEBUG(4, "fnd same addr\n"); 5378 return (0); 5379 } 5380 tdsp = TAILQ_NEXT(tdsp, nfsclds_list); 5381 if (tdsp != NULL && tdsp->nfsclds_sockp != NULL) 5382 msad = (struct sockaddr_in *) 5383 tdsp->nfsclds_sockp->nr_nam; 5384 else 5385 msad = NULL; 5386 } 5387 NFSUNLOCKMNT(nmp); 5388 5389 /* No IP address match, so look for new/trunked one. */ 5390 sad = malloc(sizeof(*sad), M_SONAME, M_WAITOK | M_ZERO); 5391 sad->sin_len = sizeof(*sad); 5392 sad->sin_family = AF_INET; 5393 sad->sin_port = sin->sin_port; 5394 sad->sin_addr.s_addr = sin->sin_addr.s_addr; 5395 nrp = malloc(sizeof(*nrp), M_NFSSOCKREQ, M_WAITOK | M_ZERO); 5396 nrp->nr_nam = (struct sockaddr *)sad; 5397 } else if (af == AF_INET6) { 5398 NFSLOCKMNT(nmp); 5399 /* 5400 * Check to see if we already have a session for this 5401 * address that is usable for a DS. 5402 * Note that the MDS's address is in a different place 5403 * than the sessions already acquired for DS's. 5404 */ 5405 msad6 = (struct sockaddr_in6 *)nmp->nm_sockreq.nr_nam; 5406 tdsp = TAILQ_FIRST(&nmp->nm_sess); 5407 while (tdsp != NULL) { 5408 if (msad6 != NULL && msad6->sin6_family == AF_INET6 && 5409 IN6_ARE_ADDR_EQUAL(&sin6->sin6_addr, 5410 &msad6->sin6_addr) && 5411 sin6->sin6_port == msad6->sin6_port && 5412 (tdsp->nfsclds_flags & NFSCLDS_DS) != 0 && 5413 tdsp->nfsclds_sess.nfsess_defunct == 0) { 5414 *dspp = tdsp; 5415 NFSUNLOCKMNT(nmp); 5416 return (0); 5417 } 5418 tdsp = TAILQ_NEXT(tdsp, nfsclds_list); 5419 if (tdsp != NULL && tdsp->nfsclds_sockp != NULL) 5420 msad6 = (struct sockaddr_in6 *) 5421 tdsp->nfsclds_sockp->nr_nam; 5422 else 5423 msad6 = NULL; 5424 } 5425 NFSUNLOCKMNT(nmp); 5426 5427 /* No IP address match, so look for new/trunked one. */ 5428 sad6 = malloc(sizeof(*sad6), M_SONAME, M_WAITOK | M_ZERO); 5429 sad6->sin6_len = sizeof(*sad6); 5430 sad6->sin6_family = AF_INET6; 5431 sad6->sin6_port = sin6->sin6_port; 5432 NFSBCOPY(&sin6->sin6_addr, &sad6->sin6_addr, 5433 sizeof(struct in6_addr)); 5434 nrp = malloc(sizeof(*nrp), M_NFSSOCKREQ, M_WAITOK | M_ZERO); 5435 nrp->nr_nam = (struct sockaddr *)sad6; 5436 } else 5437 return (EPERM); 5438 5439 nrp->nr_sotype = SOCK_STREAM; 5440 mtx_init(&nrp->nr_mtx, "nfssock", NULL, MTX_DEF); 5441 nrp->nr_prog = NFS_PROG; 5442 nrp->nr_vers = vers; 5443 5444 /* 5445 * Use the credentials that were used for the mount, which are 5446 * in nmp->nm_sockreq.nr_cred for newnfs_connect() etc. 5447 * Ref. counting the credentials with crhold() is probably not 5448 * necessary, since nm_sockreq.nr_cred won't be crfree()'d until 5449 * unmount, but I did it anyhow. 5450 */ 5451 nrp->nr_cred = crhold(nmp->nm_sockreq.nr_cred); 5452 error = newnfs_connect(nmp, nrp, NULL, p, 0); 5453 NFSCL_DEBUG(3, "DS connect=%d\n", error); 5454 5455 dsp = NULL; 5456 /* Now, do the exchangeid and create session. */ 5457 if (error == 0) { 5458 if (vers == NFS_VER4) { 5459 error = nfsrpc_exchangeid(nmp, clp, nrp, 5460 NFSV4EXCH_USEPNFSDS, &dsp, nrp->nr_cred, p); 5461 NFSCL_DEBUG(3, "DS exchangeid=%d\n", error); 5462 if (error != 0) 5463 newnfs_disconnect(nrp); 5464 } else { 5465 dsp = malloc(sizeof(struct nfsclds), M_NFSCLDS, 5466 M_WAITOK | M_ZERO); 5467 dsp->nfsclds_flags |= NFSCLDS_DS; 5468 dsp->nfsclds_expire = INT32_MAX; /* No renews needed. */ 5469 mtx_init(&dsp->nfsclds_mtx, "nfsds", NULL, MTX_DEF); 5470 mtx_init(&dsp->nfsclds_sess.nfsess_mtx, "nfssession", 5471 NULL, MTX_DEF); 5472 } 5473 } 5474 if (error == 0) { 5475 dsp->nfsclds_sockp = nrp; 5476 if (vers == NFS_VER4) { 5477 NFSLOCKMNT(nmp); 5478 retv = nfscl_getsameserver(nmp, dsp, &tdsp); 5479 NFSCL_DEBUG(3, "getsame ret=%d\n", retv); 5480 if (retv == NFSDSP_USETHISSESSION) { 5481 NFSUNLOCKMNT(nmp); 5482 /* 5483 * If there is already a session for this 5484 * server, use it. 5485 */ 5486 (void)newnfs_disconnect(nrp); 5487 nfscl_freenfsclds(dsp); 5488 *dspp = tdsp; 5489 return (0); 5490 } 5491 if (retv == NFSDSP_SEQTHISSESSION) 5492 sequenceid = 5493 tdsp->nfsclds_sess.nfsess_sequenceid; 5494 else 5495 sequenceid = 5496 dsp->nfsclds_sess.nfsess_sequenceid; 5497 NFSUNLOCKMNT(nmp); 5498 error = nfsrpc_createsession(nmp, &dsp->nfsclds_sess, 5499 nrp, sequenceid, 0, nrp->nr_cred, p); 5500 NFSCL_DEBUG(3, "DS createsess=%d\n", error); 5501 } 5502 } else { 5503 NFSFREECRED(nrp->nr_cred); 5504 NFSFREEMUTEX(&nrp->nr_mtx); 5505 free(nrp->nr_nam, M_SONAME); 5506 free(nrp, M_NFSSOCKREQ); 5507 } 5508 if (error == 0) { 5509 NFSCL_DEBUG(3, "add DS session\n"); 5510 /* 5511 * Put it at the end of the list. That way the list 5512 * is ordered by when the entry was added. This matters 5513 * since the one done first is the one that should be 5514 * used for sequencid'ing any subsequent create sessions. 5515 */ 5516 NFSLOCKMNT(nmp); 5517 TAILQ_INSERT_TAIL(&nmp->nm_sess, dsp, nfsclds_list); 5518 NFSUNLOCKMNT(nmp); 5519 *dspp = dsp; 5520 } else if (dsp != NULL) { 5521 newnfs_disconnect(nrp); 5522 nfscl_freenfsclds(dsp); 5523 } 5524 return (error); 5525 } 5526 5527 /* 5528 * Do the NFSv4.1 Reclaim Complete. 5529 */ 5530 int 5531 nfsrpc_reclaimcomplete(struct nfsmount *nmp, struct ucred *cred, NFSPROC_T *p) 5532 { 5533 uint32_t *tl; 5534 struct nfsrv_descript nfsd; 5535 struct nfsrv_descript *nd = &nfsd; 5536 int error; 5537 5538 nfscl_reqstart(nd, NFSPROC_RECLAIMCOMPL, nmp, NULL, 0, NULL, NULL, 0, 5539 0); 5540 NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED); 5541 *tl = newnfs_false; 5542 nd->nd_flag |= ND_USEGSSNAME; 5543 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 5544 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 5545 if (error != 0) 5546 return (error); 5547 error = nd->nd_repstat; 5548 mbuf_freem(nd->nd_mrep); 5549 return (error); 5550 } 5551 5552 /* 5553 * Initialize the slot tables for a session. 5554 */ 5555 static void 5556 nfscl_initsessionslots(struct nfsclsession *sep) 5557 { 5558 int i; 5559 5560 for (i = 0; i < NFSV4_CBSLOTS; i++) { 5561 if (sep->nfsess_cbslots[i].nfssl_reply != NULL) 5562 m_freem(sep->nfsess_cbslots[i].nfssl_reply); 5563 NFSBZERO(&sep->nfsess_cbslots[i], sizeof(struct nfsslot)); 5564 } 5565 for (i = 0; i < 64; i++) 5566 sep->nfsess_slotseq[i] = 0; 5567 sep->nfsess_slots = 0; 5568 } 5569 5570 /* 5571 * Called to try and do an I/O operation via an NFSv4.1 Data Server (DS). 5572 */ 5573 int 5574 nfscl_doiods(vnode_t vp, struct uio *uiop, int *iomode, int *must_commit, 5575 uint32_t rwaccess, int docommit, struct ucred *cred, NFSPROC_T *p) 5576 { 5577 struct nfsnode *np = VTONFS(vp); 5578 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 5579 struct nfscllayout *layp; 5580 struct nfscldevinfo *dip; 5581 struct nfsclflayout *rflp; 5582 struct mbuf *m; 5583 struct nfsclwritedsdorpc *drpc, *tdrpc; 5584 nfsv4stateid_t stateid; 5585 struct ucred *newcred; 5586 uint64_t lastbyte, len, off, oresid, xfer; 5587 int eof, error, firstmirror, i, iolaymode, mirrorcnt, recalled, timo; 5588 void *lckp; 5589 uint8_t *dev; 5590 void *iovbase; 5591 size_t iovlen; 5592 off_t offs; 5593 ssize_t resid; 5594 5595 if (!NFSHASPNFS(nmp) || nfscl_enablecallb == 0 || nfs_numnfscbd == 0 || 5596 (np->n_flag & NNOLAYOUT) != 0) 5597 return (EIO); 5598 /* Now, get a reference cnt on the clientid for this mount. */ 5599 if (nfscl_getref(nmp) == 0) 5600 return (EIO); 5601 5602 /* Find an appropriate stateid. */ 5603 newcred = NFSNEWCRED(cred); 5604 error = nfscl_getstateid(vp, np->n_fhp->nfh_fh, np->n_fhp->nfh_len, 5605 rwaccess, 1, newcred, p, &stateid, &lckp); 5606 if (error != 0) { 5607 NFSFREECRED(newcred); 5608 nfscl_relref(nmp); 5609 return (error); 5610 } 5611 /* Search for a layout for this file. */ 5612 off = uiop->uio_offset; 5613 layp = nfscl_getlayout(nmp->nm_clp, np->n_fhp->nfh_fh, 5614 np->n_fhp->nfh_len, off, &rflp, &recalled); 5615 if (layp == NULL || rflp == NULL) { 5616 if (recalled != 0) { 5617 NFSFREECRED(newcred); 5618 nfscl_relref(nmp); 5619 return (EIO); 5620 } 5621 if (layp != NULL) { 5622 nfscl_rellayout(layp, (rflp == NULL) ? 1 : 0); 5623 layp = NULL; 5624 } 5625 /* Try and get a Layout, if it is supported. */ 5626 if (rwaccess == NFSV4OPEN_ACCESSWRITE || 5627 (np->n_flag & NWRITEOPENED) != 0) 5628 iolaymode = NFSLAYOUTIOMODE_RW; 5629 else 5630 iolaymode = NFSLAYOUTIOMODE_READ; 5631 error = nfsrpc_getlayout(nmp, vp, np->n_fhp, iolaymode, 5632 NULL, &stateid, off, &layp, newcred, p); 5633 if (error != 0) { 5634 NFSLOCKNODE(np); 5635 np->n_flag |= NNOLAYOUT; 5636 NFSUNLOCKNODE(np); 5637 if (lckp != NULL) 5638 nfscl_lockderef(lckp); 5639 NFSFREECRED(newcred); 5640 if (layp != NULL) 5641 nfscl_rellayout(layp, 0); 5642 nfscl_relref(nmp); 5643 return (error); 5644 } 5645 } 5646 5647 /* 5648 * Loop around finding a layout that works for the first part of 5649 * this I/O operation, and then call the function that actually 5650 * does the RPC. 5651 */ 5652 eof = 0; 5653 len = (uint64_t)uiop->uio_resid; 5654 while (len > 0 && error == 0 && eof == 0) { 5655 off = uiop->uio_offset; 5656 error = nfscl_findlayoutforio(layp, off, rwaccess, &rflp); 5657 if (error == 0) { 5658 oresid = xfer = (uint64_t)uiop->uio_resid; 5659 if (xfer > (rflp->nfsfl_end - rflp->nfsfl_off)) 5660 xfer = rflp->nfsfl_end - rflp->nfsfl_off; 5661 /* 5662 * For Flex File layout with mirrored DSs, select one 5663 * of them at random for reads. For writes and commits, 5664 * do all mirrors. 5665 */ 5666 m = NULL; 5667 drpc = NULL; 5668 firstmirror = 0; 5669 mirrorcnt = 1; 5670 if ((layp->nfsly_flags & NFSLY_FLEXFILE) != 0 && 5671 (mirrorcnt = rflp->nfsfl_mirrorcnt) > 1) { 5672 if (rwaccess == NFSV4OPEN_ACCESSREAD) { 5673 firstmirror = arc4random() % mirrorcnt; 5674 mirrorcnt = firstmirror + 1; 5675 } else { 5676 if (docommit == 0) { 5677 /* 5678 * Save values, so uiop can be 5679 * rolled back upon a write 5680 * error. 5681 */ 5682 offs = uiop->uio_offset; 5683 resid = uiop->uio_resid; 5684 iovbase = 5685 uiop->uio_iov->iov_base; 5686 iovlen = uiop->uio_iov->iov_len; 5687 m = nfsm_uiombuflist(uiop, len, 5688 NULL, NULL); 5689 } 5690 tdrpc = drpc = malloc(sizeof(*drpc) * 5691 (mirrorcnt - 1), M_TEMP, M_WAITOK | 5692 M_ZERO); 5693 } 5694 } 5695 for (i = firstmirror; i < mirrorcnt && error == 0; i++){ 5696 if ((layp->nfsly_flags & NFSLY_FLEXFILE) != 0) 5697 dev = rflp->nfsfl_ffm[i].dev; 5698 else 5699 dev = rflp->nfsfl_dev; 5700 dip = nfscl_getdevinfo(nmp->nm_clp, dev, 5701 rflp->nfsfl_devp); 5702 if (dip != NULL) { 5703 if ((rflp->nfsfl_flags & NFSFL_FLEXFILE) 5704 != 0) 5705 error = nfscl_dofflayoutio(vp, 5706 uiop, iomode, must_commit, 5707 &eof, &stateid, rwaccess, 5708 dip, layp, rflp, off, xfer, 5709 i, docommit, m, tdrpc, 5710 newcred, p); 5711 else 5712 error = nfscl_doflayoutio(vp, 5713 uiop, iomode, must_commit, 5714 &eof, &stateid, rwaccess, 5715 dip, layp, rflp, off, xfer, 5716 docommit, newcred, p); 5717 nfscl_reldevinfo(dip); 5718 } else 5719 error = EIO; 5720 tdrpc++; 5721 } 5722 if (m != NULL) 5723 m_freem(m); 5724 tdrpc = drpc; 5725 timo = hz / 50; /* Wait for 20msec. */ 5726 if (timo < 1) 5727 timo = 1; 5728 for (i = firstmirror; i < mirrorcnt - 1 && 5729 tdrpc != NULL; i++, tdrpc++) { 5730 /* 5731 * For the unused drpc entries, both inprog and 5732 * err == 0, so this loop won't break. 5733 */ 5734 while (tdrpc->inprog != 0 && tdrpc->done == 0) 5735 tsleep(&tdrpc->tsk, PVFS, "clrpcio", 5736 timo); 5737 if (error == 0 && tdrpc->err != 0) 5738 error = tdrpc->err; 5739 } 5740 free(drpc, M_TEMP); 5741 if (error == 0) { 5742 if (mirrorcnt > 1 && rwaccess == 5743 NFSV4OPEN_ACCESSWRITE && docommit == 0) { 5744 NFSLOCKCLSTATE(); 5745 layp->nfsly_flags |= NFSLY_WRITTEN; 5746 NFSUNLOCKCLSTATE(); 5747 } 5748 lastbyte = off + xfer - 1; 5749 NFSLOCKCLSTATE(); 5750 if (lastbyte > layp->nfsly_lastbyte) 5751 layp->nfsly_lastbyte = lastbyte; 5752 NFSUNLOCKCLSTATE(); 5753 } else if (error == NFSERR_OPENMODE && 5754 rwaccess == NFSV4OPEN_ACCESSREAD) { 5755 NFSLOCKMNT(nmp); 5756 nmp->nm_state |= NFSSTA_OPENMODE; 5757 NFSUNLOCKMNT(nmp); 5758 } else 5759 error = EIO; 5760 if (error == 0) 5761 len -= (oresid - (uint64_t)uiop->uio_resid); 5762 else if (mirrorcnt > 1 && rwaccess == 5763 NFSV4OPEN_ACCESSWRITE && docommit == 0) { 5764 /* 5765 * In case the rpc gets retried, roll the 5766 * uio fields changed by nfsm_uiombuflist() 5767 * back. 5768 */ 5769 uiop->uio_offset = offs; 5770 uiop->uio_resid = resid; 5771 uiop->uio_iov->iov_base = iovbase; 5772 uiop->uio_iov->iov_len = iovlen; 5773 } 5774 } 5775 } 5776 if (lckp != NULL) 5777 nfscl_lockderef(lckp); 5778 NFSFREECRED(newcred); 5779 nfscl_rellayout(layp, 0); 5780 nfscl_relref(nmp); 5781 return (error); 5782 } 5783 5784 /* 5785 * Make a copy of the mbuf chain and add an mbuf for null padding, as required. 5786 */ 5787 static struct mbuf * 5788 nfsm_copym(struct mbuf *m, int off, int xfer) 5789 { 5790 struct mbuf *m2, *m3, *m4; 5791 uint32_t *tl; 5792 int rem; 5793 5794 m2 = m_copym(m, off, xfer, M_WAITOK); 5795 rem = NFSM_RNDUP(xfer) - xfer; 5796 if (rem > 0) { 5797 /* 5798 * The zero padding to a multiple of 4 bytes is required by 5799 * the XDR. So that the mbufs copied by reference aren't 5800 * modified, add an mbuf with the zero'd bytes to the list. 5801 * rem will be a maximum of 3, so one zero'd uint32_t is 5802 * sufficient. 5803 */ 5804 m3 = m2; 5805 while (m3->m_next != NULL) 5806 m3 = m3->m_next; 5807 NFSMGET(m4); 5808 tl = NFSMTOD(m4, uint32_t *); 5809 *tl = 0; 5810 mbuf_setlen(m4, rem); 5811 mbuf_setnext(m3, m4); 5812 } 5813 return (m2); 5814 } 5815 5816 /* 5817 * Find a file layout that will handle the first bytes of the requested 5818 * range and return the information from it needed to the I/O operation. 5819 */ 5820 int 5821 nfscl_findlayoutforio(struct nfscllayout *lyp, uint64_t off, uint32_t rwaccess, 5822 struct nfsclflayout **retflpp) 5823 { 5824 struct nfsclflayout *flp, *nflp, *rflp; 5825 uint32_t rw; 5826 5827 rflp = NULL; 5828 rw = rwaccess; 5829 /* For reading, do the Read list first and then the Write list. */ 5830 do { 5831 if (rw == NFSV4OPEN_ACCESSREAD) 5832 flp = LIST_FIRST(&lyp->nfsly_flayread); 5833 else 5834 flp = LIST_FIRST(&lyp->nfsly_flayrw); 5835 while (flp != NULL) { 5836 nflp = LIST_NEXT(flp, nfsfl_list); 5837 if (flp->nfsfl_off > off) 5838 break; 5839 if (flp->nfsfl_end > off && 5840 (rflp == NULL || rflp->nfsfl_end < flp->nfsfl_end)) 5841 rflp = flp; 5842 flp = nflp; 5843 } 5844 if (rw == NFSV4OPEN_ACCESSREAD) 5845 rw = NFSV4OPEN_ACCESSWRITE; 5846 else 5847 rw = 0; 5848 } while (rw != 0); 5849 if (rflp != NULL) { 5850 /* This one covers the most bytes starting at off. */ 5851 *retflpp = rflp; 5852 return (0); 5853 } 5854 return (EIO); 5855 } 5856 5857 /* 5858 * Do I/O using an NFSv4.1 file layout. 5859 */ 5860 static int 5861 nfscl_doflayoutio(vnode_t vp, struct uio *uiop, int *iomode, int *must_commit, 5862 int *eofp, nfsv4stateid_t *stateidp, int rwflag, struct nfscldevinfo *dp, 5863 struct nfscllayout *lyp, struct nfsclflayout *flp, uint64_t off, 5864 uint64_t len, int docommit, struct ucred *cred, NFSPROC_T *p) 5865 { 5866 uint64_t io_off, rel_off, stripe_unit_size, transfer, xfer; 5867 int commit_thru_mds, error, stripe_index, stripe_pos; 5868 struct nfsnode *np; 5869 struct nfsfh *fhp; 5870 struct nfsclds **dspp; 5871 5872 np = VTONFS(vp); 5873 rel_off = off - flp->nfsfl_patoff; 5874 stripe_unit_size = (flp->nfsfl_util >> 6) & 0x3ffffff; 5875 stripe_pos = (rel_off / stripe_unit_size + flp->nfsfl_stripe1) % 5876 dp->nfsdi_stripecnt; 5877 transfer = stripe_unit_size - (rel_off % stripe_unit_size); 5878 error = 0; 5879 5880 /* Loop around, doing I/O for each stripe unit. */ 5881 while (len > 0 && error == 0) { 5882 stripe_index = nfsfldi_stripeindex(dp, stripe_pos); 5883 dspp = nfsfldi_addr(dp, stripe_index); 5884 if (len > transfer && docommit == 0) 5885 xfer = transfer; 5886 else 5887 xfer = len; 5888 if ((flp->nfsfl_util & NFSFLAYUTIL_DENSE) != 0) { 5889 /* Dense layout. */ 5890 if (stripe_pos >= flp->nfsfl_fhcnt) 5891 return (EIO); 5892 fhp = flp->nfsfl_fh[stripe_pos]; 5893 io_off = (rel_off / (stripe_unit_size * 5894 dp->nfsdi_stripecnt)) * stripe_unit_size + 5895 rel_off % stripe_unit_size; 5896 } else { 5897 /* Sparse layout. */ 5898 if (flp->nfsfl_fhcnt > 1) { 5899 if (stripe_index >= flp->nfsfl_fhcnt) 5900 return (EIO); 5901 fhp = flp->nfsfl_fh[stripe_index]; 5902 } else if (flp->nfsfl_fhcnt == 1) 5903 fhp = flp->nfsfl_fh[0]; 5904 else 5905 fhp = np->n_fhp; 5906 io_off = off; 5907 } 5908 if ((flp->nfsfl_util & NFSFLAYUTIL_COMMIT_THRU_MDS) != 0) { 5909 commit_thru_mds = 1; 5910 if (docommit != 0) 5911 error = EIO; 5912 } else { 5913 commit_thru_mds = 0; 5914 mtx_lock(&np->n_mtx); 5915 np->n_flag |= NDSCOMMIT; 5916 mtx_unlock(&np->n_mtx); 5917 } 5918 if (docommit != 0) { 5919 if (error == 0) 5920 error = nfsrpc_commitds(vp, io_off, xfer, 5921 *dspp, fhp, 0, 0, cred, p); 5922 if (error == 0) { 5923 /* 5924 * Set both eof and uio_resid = 0 to end any 5925 * loops. 5926 */ 5927 *eofp = 1; 5928 uiop->uio_resid = 0; 5929 } else { 5930 mtx_lock(&np->n_mtx); 5931 np->n_flag &= ~NDSCOMMIT; 5932 mtx_unlock(&np->n_mtx); 5933 } 5934 } else if (rwflag == NFSV4OPEN_ACCESSREAD) 5935 error = nfsrpc_readds(vp, uiop, stateidp, eofp, *dspp, 5936 io_off, xfer, fhp, 0, 0, 0, cred, p); 5937 else { 5938 error = nfsrpc_writeds(vp, uiop, iomode, must_commit, 5939 stateidp, *dspp, io_off, xfer, fhp, commit_thru_mds, 5940 0, 0, 0, cred, p); 5941 if (error == 0) { 5942 NFSLOCKCLSTATE(); 5943 lyp->nfsly_flags |= NFSLY_WRITTEN; 5944 NFSUNLOCKCLSTATE(); 5945 } 5946 } 5947 if (error == 0) { 5948 transfer = stripe_unit_size; 5949 stripe_pos = (stripe_pos + 1) % dp->nfsdi_stripecnt; 5950 len -= xfer; 5951 off += xfer; 5952 } 5953 } 5954 return (error); 5955 } 5956 5957 /* 5958 * Do I/O using an NFSv4.1 flex file layout. 5959 */ 5960 static int 5961 nfscl_dofflayoutio(vnode_t vp, struct uio *uiop, int *iomode, int *must_commit, 5962 int *eofp, nfsv4stateid_t *stateidp, int rwflag, struct nfscldevinfo *dp, 5963 struct nfscllayout *lyp, struct nfsclflayout *flp, uint64_t off, 5964 uint64_t len, int mirror, int docommit, struct mbuf *mp, 5965 struct nfsclwritedsdorpc *drpc, struct ucred *cred, NFSPROC_T *p) 5966 { 5967 uint64_t transfer, xfer; 5968 int error, rel_off; 5969 struct nfsnode *np; 5970 struct nfsfh *fhp; 5971 struct nfsclds **dspp; 5972 struct ucred *tcred; 5973 struct mbuf *m; 5974 5975 np = VTONFS(vp); 5976 error = 0; 5977 rel_off = 0; 5978 NFSCL_DEBUG(4, "nfscl_dofflayoutio: off=%ju len=%ju\n", (uintmax_t)off, 5979 (uintmax_t)len); 5980 /* Loop around, doing I/O for each stripe unit. */ 5981 while (len > 0 && error == 0) { 5982 dspp = nfsfldi_addr(dp, 0); 5983 fhp = flp->nfsfl_ffm[mirror].fh[dp->nfsdi_versindex]; 5984 stateidp = &flp->nfsfl_ffm[mirror].st; 5985 NFSCL_DEBUG(4, "mirror=%d vind=%d fhlen=%d st.seqid=0x%x\n", 5986 mirror, dp->nfsdi_versindex, fhp->nfh_len, stateidp->seqid); 5987 if ((dp->nfsdi_flags & NFSDI_TIGHTCOUPLED) == 0) { 5988 tcred = NFSNEWCRED(cred); 5989 tcred->cr_uid = flp->nfsfl_ffm[mirror].user; 5990 tcred->cr_groups[0] = flp->nfsfl_ffm[mirror].group; 5991 tcred->cr_ngroups = 1; 5992 } else 5993 tcred = cred; 5994 if (rwflag == NFSV4OPEN_ACCESSREAD) 5995 transfer = dp->nfsdi_rsize; 5996 else 5997 transfer = dp->nfsdi_wsize; 5998 mtx_lock(&np->n_mtx); 5999 np->n_flag |= NDSCOMMIT; 6000 mtx_unlock(&np->n_mtx); 6001 if (len > transfer && docommit == 0) 6002 xfer = transfer; 6003 else 6004 xfer = len; 6005 if (docommit != 0) { 6006 if (error == 0) { 6007 /* 6008 * Do last mirrored DS commit with this thread. 6009 */ 6010 if (mirror < flp->nfsfl_mirrorcnt - 1) 6011 error = nfsio_commitds(vp, off, xfer, 6012 *dspp, fhp, dp->nfsdi_vers, 6013 dp->nfsdi_minorvers, drpc, tcred, 6014 p); 6015 else 6016 error = nfsrpc_commitds(vp, off, xfer, 6017 *dspp, fhp, dp->nfsdi_vers, 6018 dp->nfsdi_minorvers, tcred, p); 6019 } 6020 NFSCL_DEBUG(4, "aft nfsio_commitds=%d\n", error); 6021 if (error == 0) { 6022 /* 6023 * Set both eof and uio_resid = 0 to end any 6024 * loops. 6025 */ 6026 *eofp = 1; 6027 uiop->uio_resid = 0; 6028 } else { 6029 mtx_lock(&np->n_mtx); 6030 np->n_flag &= ~NDSCOMMIT; 6031 mtx_unlock(&np->n_mtx); 6032 } 6033 } else if (rwflag == NFSV4OPEN_ACCESSREAD) 6034 error = nfsrpc_readds(vp, uiop, stateidp, eofp, *dspp, 6035 off, xfer, fhp, 1, dp->nfsdi_vers, 6036 dp->nfsdi_minorvers, tcred, p); 6037 else { 6038 if (flp->nfsfl_mirrorcnt == 1) { 6039 error = nfsrpc_writeds(vp, uiop, iomode, 6040 must_commit, stateidp, *dspp, off, xfer, 6041 fhp, 0, 1, dp->nfsdi_vers, 6042 dp->nfsdi_minorvers, tcred, p); 6043 if (error == 0) { 6044 NFSLOCKCLSTATE(); 6045 lyp->nfsly_flags |= NFSLY_WRITTEN; 6046 NFSUNLOCKCLSTATE(); 6047 } 6048 } else { 6049 m = nfsm_copym(mp, rel_off, xfer); 6050 NFSCL_DEBUG(4, "mcopy reloff=%d xfer=%jd\n", 6051 rel_off, (uintmax_t)xfer); 6052 /* 6053 * Do last write to a mirrored DS with this 6054 * thread. 6055 */ 6056 if (mirror < flp->nfsfl_mirrorcnt - 1) 6057 error = nfsio_writedsmir(vp, iomode, 6058 must_commit, stateidp, *dspp, off, 6059 xfer, fhp, m, dp->nfsdi_vers, 6060 dp->nfsdi_minorvers, drpc, tcred, 6061 p); 6062 else 6063 error = nfsrpc_writedsmir(vp, iomode, 6064 must_commit, stateidp, *dspp, off, 6065 xfer, fhp, m, dp->nfsdi_vers, 6066 dp->nfsdi_minorvers, tcred, p); 6067 NFSCL_DEBUG(4, "nfsio_writedsmir=%d\n", error); 6068 } 6069 } 6070 NFSCL_DEBUG(4, "aft read/writeds=%d\n", error); 6071 if (error == 0) { 6072 len -= xfer; 6073 off += xfer; 6074 rel_off += xfer; 6075 } 6076 if ((dp->nfsdi_flags & NFSDI_TIGHTCOUPLED) == 0) 6077 NFSFREECRED(tcred); 6078 } 6079 NFSCL_DEBUG(4, "eo nfscl_dofflayoutio=%d\n", error); 6080 return (error); 6081 } 6082 6083 /* 6084 * The actual read RPC done to a DS. 6085 */ 6086 static int 6087 nfsrpc_readds(vnode_t vp, struct uio *uiop, nfsv4stateid_t *stateidp, int *eofp, 6088 struct nfsclds *dsp, uint64_t io_off, int len, struct nfsfh *fhp, int flex, 6089 int vers, int minorvers, struct ucred *cred, NFSPROC_T *p) 6090 { 6091 uint32_t *tl; 6092 int attrflag, error, retlen; 6093 struct nfsrv_descript nfsd; 6094 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 6095 struct nfsrv_descript *nd = &nfsd; 6096 struct nfssockreq *nrp; 6097 struct nfsvattr na; 6098 6099 nd->nd_mrep = NULL; 6100 if (vers == 0 || vers == NFS_VER4) { 6101 nfscl_reqstart(nd, NFSPROC_READDS, nmp, fhp->nfh_fh, 6102 fhp->nfh_len, NULL, &dsp->nfsclds_sess, vers, minorvers); 6103 vers = NFS_VER4; 6104 NFSCL_DEBUG(4, "nfsrpc_readds: vers4 minvers=%d\n", minorvers); 6105 if (flex != 0) 6106 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID); 6107 else 6108 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSEQIDZERO); 6109 } else { 6110 nfscl_reqstart(nd, NFSPROC_READ, nmp, fhp->nfh_fh, 6111 fhp->nfh_len, NULL, &dsp->nfsclds_sess, vers, minorvers); 6112 NFSCL_DEBUG(4, "nfsrpc_readds: vers3\n"); 6113 } 6114 NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED * 3); 6115 txdr_hyper(io_off, tl); 6116 *(tl + 2) = txdr_unsigned(len); 6117 nrp = dsp->nfsclds_sockp; 6118 NFSCL_DEBUG(4, "nfsrpc_readds: nrp=%p\n", nrp); 6119 if (nrp == NULL) 6120 /* If NULL, use the MDS socket. */ 6121 nrp = &nmp->nm_sockreq; 6122 error = newnfs_request(nd, nmp, NULL, nrp, vp, p, cred, 6123 NFS_PROG, vers, NULL, 1, NULL, &dsp->nfsclds_sess); 6124 NFSCL_DEBUG(4, "nfsrpc_readds: stat=%d err=%d\n", nd->nd_repstat, 6125 error); 6126 if (error != 0) 6127 return (error); 6128 if (vers == NFS_VER3) { 6129 error = nfscl_postop_attr(nd, &na, &attrflag, NULL); 6130 NFSCL_DEBUG(4, "nfsrpc_readds: postop=%d\n", error); 6131 if (error != 0) 6132 goto nfsmout; 6133 } 6134 if (nd->nd_repstat != 0) { 6135 error = nd->nd_repstat; 6136 goto nfsmout; 6137 } 6138 if (vers == NFS_VER3) { 6139 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED); 6140 *eofp = fxdr_unsigned(int, *(tl + 1)); 6141 } else { 6142 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 6143 *eofp = fxdr_unsigned(int, *tl); 6144 } 6145 NFSM_STRSIZ(retlen, len); 6146 NFSCL_DEBUG(4, "nfsrpc_readds: retlen=%d eof=%d\n", retlen, *eofp); 6147 error = nfsm_mbufuio(nd, uiop, retlen); 6148 nfsmout: 6149 if (nd->nd_mrep != NULL) 6150 mbuf_freem(nd->nd_mrep); 6151 return (error); 6152 } 6153 6154 /* 6155 * The actual write RPC done to a DS. 6156 */ 6157 static int 6158 nfsrpc_writeds(vnode_t vp, struct uio *uiop, int *iomode, int *must_commit, 6159 nfsv4stateid_t *stateidp, struct nfsclds *dsp, uint64_t io_off, int len, 6160 struct nfsfh *fhp, int commit_thru_mds, int flex, int vers, int minorvers, 6161 struct ucred *cred, NFSPROC_T *p) 6162 { 6163 uint32_t *tl; 6164 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 6165 int attrflag, error, rlen, commit, committed = NFSWRITE_FILESYNC; 6166 int32_t backup; 6167 struct nfsrv_descript nfsd; 6168 struct nfsrv_descript *nd = &nfsd; 6169 struct nfssockreq *nrp; 6170 struct nfsvattr na; 6171 6172 KASSERT(uiop->uio_iovcnt == 1, ("nfs: writerpc iovcnt > 1")); 6173 nd->nd_mrep = NULL; 6174 if (vers == 0 || vers == NFS_VER4) { 6175 nfscl_reqstart(nd, NFSPROC_WRITEDS, nmp, fhp->nfh_fh, 6176 fhp->nfh_len, NULL, &dsp->nfsclds_sess, vers, minorvers); 6177 NFSCL_DEBUG(4, "nfsrpc_writeds: vers4 minvers=%d\n", minorvers); 6178 vers = NFS_VER4; 6179 if (flex != 0) 6180 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID); 6181 else 6182 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSEQIDZERO); 6183 NFSM_BUILD(tl, uint32_t *, NFSX_HYPER + 2 * NFSX_UNSIGNED); 6184 } else { 6185 nfscl_reqstart(nd, NFSPROC_WRITE, nmp, fhp->nfh_fh, 6186 fhp->nfh_len, NULL, &dsp->nfsclds_sess, vers, minorvers); 6187 NFSCL_DEBUG(4, "nfsrpc_writeds: vers3\n"); 6188 NFSM_BUILD(tl, uint32_t *, NFSX_HYPER + 3 * NFSX_UNSIGNED); 6189 } 6190 txdr_hyper(io_off, tl); 6191 tl += 2; 6192 if (vers == NFS_VER3) 6193 *tl++ = txdr_unsigned(len); 6194 *tl++ = txdr_unsigned(*iomode); 6195 *tl = txdr_unsigned(len); 6196 nfsm_uiombuf(nd, uiop, len); 6197 nrp = dsp->nfsclds_sockp; 6198 if (nrp == NULL) 6199 /* If NULL, use the MDS socket. */ 6200 nrp = &nmp->nm_sockreq; 6201 error = newnfs_request(nd, nmp, NULL, nrp, vp, p, cred, 6202 NFS_PROG, vers, NULL, 1, NULL, &dsp->nfsclds_sess); 6203 NFSCL_DEBUG(4, "nfsrpc_writeds: err=%d stat=%d\n", error, 6204 nd->nd_repstat); 6205 if (error != 0) 6206 return (error); 6207 if (nd->nd_repstat != 0) { 6208 /* 6209 * In case the rpc gets retried, roll 6210 * the uio fileds changed by nfsm_uiombuf() 6211 * back. 6212 */ 6213 uiop->uio_offset -= len; 6214 uio_uio_resid_add(uiop, len); 6215 uio_iov_base_add(uiop, -len); 6216 uio_iov_len_add(uiop, len); 6217 error = nd->nd_repstat; 6218 } else { 6219 if (vers == NFS_VER3) { 6220 error = nfscl_wcc_data(nd, vp, &na, &attrflag, NULL, 6221 NULL); 6222 NFSCL_DEBUG(4, "nfsrpc_writeds: wcc_data=%d\n", error); 6223 if (error != 0) 6224 goto nfsmout; 6225 } 6226 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED + NFSX_VERF); 6227 rlen = fxdr_unsigned(int, *tl++); 6228 NFSCL_DEBUG(4, "nfsrpc_writeds: len=%d rlen=%d\n", len, rlen); 6229 if (rlen == 0) { 6230 error = NFSERR_IO; 6231 goto nfsmout; 6232 } else if (rlen < len) { 6233 backup = len - rlen; 6234 uio_iov_base_add(uiop, -(backup)); 6235 uio_iov_len_add(uiop, backup); 6236 uiop->uio_offset -= backup; 6237 uio_uio_resid_add(uiop, backup); 6238 len = rlen; 6239 } 6240 commit = fxdr_unsigned(int, *tl++); 6241 6242 /* 6243 * Return the lowest commitment level 6244 * obtained by any of the RPCs. 6245 */ 6246 if (committed == NFSWRITE_FILESYNC) 6247 committed = commit; 6248 else if (committed == NFSWRITE_DATASYNC && 6249 commit == NFSWRITE_UNSTABLE) 6250 committed = commit; 6251 if (commit_thru_mds != 0) { 6252 NFSLOCKMNT(nmp); 6253 if (!NFSHASWRITEVERF(nmp)) { 6254 NFSBCOPY(tl, nmp->nm_verf, NFSX_VERF); 6255 NFSSETWRITEVERF(nmp); 6256 } else if (NFSBCMP(tl, nmp->nm_verf, NFSX_VERF)) { 6257 *must_commit = 1; 6258 NFSBCOPY(tl, nmp->nm_verf, NFSX_VERF); 6259 } 6260 NFSUNLOCKMNT(nmp); 6261 } else { 6262 NFSLOCKDS(dsp); 6263 if ((dsp->nfsclds_flags & NFSCLDS_HASWRITEVERF) == 0) { 6264 NFSBCOPY(tl, dsp->nfsclds_verf, NFSX_VERF); 6265 dsp->nfsclds_flags |= NFSCLDS_HASWRITEVERF; 6266 } else if (NFSBCMP(tl, dsp->nfsclds_verf, NFSX_VERF)) { 6267 *must_commit = 1; 6268 NFSBCOPY(tl, dsp->nfsclds_verf, NFSX_VERF); 6269 } 6270 NFSUNLOCKDS(dsp); 6271 } 6272 } 6273 nfsmout: 6274 if (nd->nd_mrep != NULL) 6275 mbuf_freem(nd->nd_mrep); 6276 *iomode = committed; 6277 if (nd->nd_repstat != 0 && error == 0) 6278 error = nd->nd_repstat; 6279 return (error); 6280 } 6281 6282 /* 6283 * The actual write RPC done to a DS. 6284 * This variant is called from a separate kernel process for mirrors. 6285 * Any short write is considered an IO error. 6286 */ 6287 static int 6288 nfsrpc_writedsmir(vnode_t vp, int *iomode, int *must_commit, 6289 nfsv4stateid_t *stateidp, struct nfsclds *dsp, uint64_t io_off, int len, 6290 struct nfsfh *fhp, struct mbuf *m, int vers, int minorvers, 6291 struct ucred *cred, NFSPROC_T *p) 6292 { 6293 uint32_t *tl; 6294 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 6295 int attrflag, error, commit, committed = NFSWRITE_FILESYNC, rlen; 6296 struct nfsrv_descript nfsd; 6297 struct nfsrv_descript *nd = &nfsd; 6298 struct nfssockreq *nrp; 6299 struct nfsvattr na; 6300 6301 nd->nd_mrep = NULL; 6302 if (vers == 0 || vers == NFS_VER4) { 6303 nfscl_reqstart(nd, NFSPROC_WRITEDS, nmp, fhp->nfh_fh, 6304 fhp->nfh_len, NULL, &dsp->nfsclds_sess, vers, minorvers); 6305 vers = NFS_VER4; 6306 NFSCL_DEBUG(4, "nfsrpc_writedsmir: vers4 minvers=%d\n", 6307 minorvers); 6308 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID); 6309 NFSM_BUILD(tl, uint32_t *, NFSX_HYPER + 2 * NFSX_UNSIGNED); 6310 } else { 6311 nfscl_reqstart(nd, NFSPROC_WRITE, nmp, fhp->nfh_fh, 6312 fhp->nfh_len, NULL, &dsp->nfsclds_sess, vers, minorvers); 6313 NFSCL_DEBUG(4, "nfsrpc_writedsmir: vers3\n"); 6314 NFSM_BUILD(tl, uint32_t *, NFSX_HYPER + 3 * NFSX_UNSIGNED); 6315 } 6316 txdr_hyper(io_off, tl); 6317 tl += 2; 6318 if (vers == NFS_VER3) 6319 *tl++ = txdr_unsigned(len); 6320 *tl++ = txdr_unsigned(*iomode); 6321 *tl = txdr_unsigned(len); 6322 if (len > 0) { 6323 /* Put data in mbuf chain. */ 6324 nd->nd_mb->m_next = m; 6325 /* Set nd_mb and nd_bpos to end of data. */ 6326 while (m->m_next != NULL) 6327 m = m->m_next; 6328 nd->nd_mb = m; 6329 nd->nd_bpos = mtod(m, char *) + m->m_len; 6330 NFSCL_DEBUG(4, "nfsrpc_writedsmir: lastmb len=%d\n", m->m_len); 6331 } 6332 nrp = dsp->nfsclds_sockp; 6333 if (nrp == NULL) 6334 /* If NULL, use the MDS socket. */ 6335 nrp = &nmp->nm_sockreq; 6336 error = newnfs_request(nd, nmp, NULL, nrp, vp, p, cred, 6337 NFS_PROG, vers, NULL, 1, NULL, &dsp->nfsclds_sess); 6338 NFSCL_DEBUG(4, "nfsrpc_writedsmir: err=%d stat=%d\n", error, 6339 nd->nd_repstat); 6340 if (error != 0) 6341 return (error); 6342 if (nd->nd_repstat != 0) 6343 error = nd->nd_repstat; 6344 else { 6345 if (vers == NFS_VER3) { 6346 error = nfscl_wcc_data(nd, vp, &na, &attrflag, NULL, 6347 NULL); 6348 NFSCL_DEBUG(4, "nfsrpc_writedsmir: wcc_data=%d\n", 6349 error); 6350 if (error != 0) 6351 goto nfsmout; 6352 } 6353 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED + NFSX_VERF); 6354 rlen = fxdr_unsigned(int, *tl++); 6355 NFSCL_DEBUG(4, "nfsrpc_writedsmir: len=%d rlen=%d\n", len, 6356 rlen); 6357 if (rlen != len) { 6358 error = NFSERR_IO; 6359 NFSCL_DEBUG(4, "nfsrpc_writedsmir: len=%d rlen=%d\n", 6360 len, rlen); 6361 goto nfsmout; 6362 } 6363 commit = fxdr_unsigned(int, *tl++); 6364 6365 /* 6366 * Return the lowest commitment level 6367 * obtained by any of the RPCs. 6368 */ 6369 if (committed == NFSWRITE_FILESYNC) 6370 committed = commit; 6371 else if (committed == NFSWRITE_DATASYNC && 6372 commit == NFSWRITE_UNSTABLE) 6373 committed = commit; 6374 NFSLOCKDS(dsp); 6375 if ((dsp->nfsclds_flags & NFSCLDS_HASWRITEVERF) == 0) { 6376 NFSBCOPY(tl, dsp->nfsclds_verf, NFSX_VERF); 6377 dsp->nfsclds_flags |= NFSCLDS_HASWRITEVERF; 6378 } else if (NFSBCMP(tl, dsp->nfsclds_verf, NFSX_VERF)) { 6379 *must_commit = 1; 6380 NFSBCOPY(tl, dsp->nfsclds_verf, NFSX_VERF); 6381 } 6382 NFSUNLOCKDS(dsp); 6383 } 6384 nfsmout: 6385 if (nd->nd_mrep != NULL) 6386 mbuf_freem(nd->nd_mrep); 6387 *iomode = committed; 6388 if (nd->nd_repstat != 0 && error == 0) 6389 error = nd->nd_repstat; 6390 return (error); 6391 } 6392 6393 /* 6394 * Start up the thread that will execute nfsrpc_writedsmir(). 6395 */ 6396 static void 6397 start_writedsmir(void *arg, int pending) 6398 { 6399 struct nfsclwritedsdorpc *drpc; 6400 6401 drpc = (struct nfsclwritedsdorpc *)arg; 6402 drpc->err = nfsrpc_writedsmir(drpc->vp, &drpc->iomode, 6403 &drpc->must_commit, drpc->stateidp, drpc->dsp, drpc->off, drpc->len, 6404 drpc->fhp, drpc->m, drpc->vers, drpc->minorvers, drpc->cred, 6405 drpc->p); 6406 drpc->done = 1; 6407 NFSCL_DEBUG(4, "start_writedsmir: err=%d\n", drpc->err); 6408 } 6409 6410 /* 6411 * Set up the write DS mirror call for the pNFS I/O thread. 6412 */ 6413 static int 6414 nfsio_writedsmir(vnode_t vp, int *iomode, int *must_commit, 6415 nfsv4stateid_t *stateidp, struct nfsclds *dsp, uint64_t off, int len, 6416 struct nfsfh *fhp, struct mbuf *m, int vers, int minorvers, 6417 struct nfsclwritedsdorpc *drpc, struct ucred *cred, NFSPROC_T *p) 6418 { 6419 int error, ret; 6420 6421 error = 0; 6422 drpc->done = 0; 6423 drpc->vp = vp; 6424 drpc->iomode = *iomode; 6425 drpc->must_commit = *must_commit; 6426 drpc->stateidp = stateidp; 6427 drpc->dsp = dsp; 6428 drpc->off = off; 6429 drpc->len = len; 6430 drpc->fhp = fhp; 6431 drpc->m = m; 6432 drpc->vers = vers; 6433 drpc->minorvers = minorvers; 6434 drpc->cred = cred; 6435 drpc->p = p; 6436 drpc->inprog = 0; 6437 ret = EIO; 6438 if (nfs_pnfsiothreads > 0) { 6439 ret = nfs_pnfsio(start_writedsmir, drpc); 6440 NFSCL_DEBUG(4, "nfsio_writedsmir: nfs_pnfsio=%d\n", ret); 6441 } 6442 if (ret != 0) 6443 error = nfsrpc_writedsmir(vp, iomode, must_commit, stateidp, 6444 dsp, off, len, fhp, m, vers, minorvers, cred, p); 6445 NFSCL_DEBUG(4, "nfsio_writedsmir: error=%d\n", error); 6446 return (error); 6447 } 6448 6449 /* 6450 * Free up the nfsclds structure. 6451 */ 6452 void 6453 nfscl_freenfsclds(struct nfsclds *dsp) 6454 { 6455 int i; 6456 6457 if (dsp == NULL) 6458 return; 6459 if (dsp->nfsclds_sockp != NULL) { 6460 NFSFREECRED(dsp->nfsclds_sockp->nr_cred); 6461 NFSFREEMUTEX(&dsp->nfsclds_sockp->nr_mtx); 6462 free(dsp->nfsclds_sockp->nr_nam, M_SONAME); 6463 free(dsp->nfsclds_sockp, M_NFSSOCKREQ); 6464 } 6465 NFSFREEMUTEX(&dsp->nfsclds_mtx); 6466 NFSFREEMUTEX(&dsp->nfsclds_sess.nfsess_mtx); 6467 for (i = 0; i < NFSV4_CBSLOTS; i++) { 6468 if (dsp->nfsclds_sess.nfsess_cbslots[i].nfssl_reply != NULL) 6469 m_freem( 6470 dsp->nfsclds_sess.nfsess_cbslots[i].nfssl_reply); 6471 } 6472 free(dsp, M_NFSCLDS); 6473 } 6474 6475 static enum nfsclds_state 6476 nfscl_getsameserver(struct nfsmount *nmp, struct nfsclds *newdsp, 6477 struct nfsclds **retdspp) 6478 { 6479 struct nfsclds *dsp, *cur_dsp; 6480 6481 /* 6482 * Search the list of nfsclds structures for one with the same 6483 * server. 6484 */ 6485 cur_dsp = NULL; 6486 TAILQ_FOREACH(dsp, &nmp->nm_sess, nfsclds_list) { 6487 if (dsp->nfsclds_servownlen == newdsp->nfsclds_servownlen && 6488 dsp->nfsclds_servownlen != 0 && 6489 !NFSBCMP(dsp->nfsclds_serverown, newdsp->nfsclds_serverown, 6490 dsp->nfsclds_servownlen) && 6491 dsp->nfsclds_sess.nfsess_defunct == 0) { 6492 NFSCL_DEBUG(4, "fnd same fdsp=%p dsp=%p flg=0x%x\n", 6493 TAILQ_FIRST(&nmp->nm_sess), dsp, 6494 dsp->nfsclds_flags); 6495 /* Server major id matches. */ 6496 if ((dsp->nfsclds_flags & NFSCLDS_DS) != 0) { 6497 *retdspp = dsp; 6498 return (NFSDSP_USETHISSESSION); 6499 } 6500 6501 /* 6502 * Note the first match, so it can be used for 6503 * sequence'ing new sessions. 6504 */ 6505 if (cur_dsp == NULL) 6506 cur_dsp = dsp; 6507 } 6508 } 6509 if (cur_dsp != NULL) { 6510 *retdspp = cur_dsp; 6511 return (NFSDSP_SEQTHISSESSION); 6512 } 6513 return (NFSDSP_NOTFOUND); 6514 } 6515 6516 /* 6517 * NFS commit rpc to a NFSv4.1 DS. 6518 */ 6519 static int 6520 nfsrpc_commitds(vnode_t vp, uint64_t offset, int cnt, struct nfsclds *dsp, 6521 struct nfsfh *fhp, int vers, int minorvers, struct ucred *cred, 6522 NFSPROC_T *p) 6523 { 6524 uint32_t *tl; 6525 struct nfsrv_descript nfsd, *nd = &nfsd; 6526 struct nfsmount *nmp = VFSTONFS(vnode_mount(vp)); 6527 struct nfssockreq *nrp; 6528 struct nfsvattr na; 6529 int attrflag, error; 6530 6531 nd->nd_mrep = NULL; 6532 if (vers == 0 || vers == NFS_VER4) { 6533 nfscl_reqstart(nd, NFSPROC_COMMITDS, nmp, fhp->nfh_fh, 6534 fhp->nfh_len, NULL, &dsp->nfsclds_sess, vers, minorvers); 6535 vers = NFS_VER4; 6536 } else 6537 nfscl_reqstart(nd, NFSPROC_COMMIT, nmp, fhp->nfh_fh, 6538 fhp->nfh_len, NULL, &dsp->nfsclds_sess, vers, minorvers); 6539 NFSCL_DEBUG(4, "nfsrpc_commitds: vers=%d minvers=%d\n", vers, 6540 minorvers); 6541 NFSM_BUILD(tl, uint32_t *, NFSX_HYPER + NFSX_UNSIGNED); 6542 txdr_hyper(offset, tl); 6543 tl += 2; 6544 *tl = txdr_unsigned(cnt); 6545 nrp = dsp->nfsclds_sockp; 6546 if (nrp == NULL) 6547 /* If NULL, use the MDS socket. */ 6548 nrp = &nmp->nm_sockreq; 6549 error = newnfs_request(nd, nmp, NULL, nrp, vp, p, cred, 6550 NFS_PROG, vers, NULL, 1, NULL, &dsp->nfsclds_sess); 6551 NFSCL_DEBUG(4, "nfsrpc_commitds: err=%d stat=%d\n", error, 6552 nd->nd_repstat); 6553 if (error != 0) 6554 return (error); 6555 if (nd->nd_repstat == 0) { 6556 if (vers == NFS_VER3) { 6557 error = nfscl_wcc_data(nd, vp, &na, &attrflag, NULL, 6558 NULL); 6559 NFSCL_DEBUG(4, "nfsrpc_commitds: wccdata=%d\n", error); 6560 if (error != 0) 6561 goto nfsmout; 6562 } 6563 NFSM_DISSECT(tl, u_int32_t *, NFSX_VERF); 6564 NFSLOCKDS(dsp); 6565 if (NFSBCMP(tl, dsp->nfsclds_verf, NFSX_VERF)) { 6566 NFSBCOPY(tl, dsp->nfsclds_verf, NFSX_VERF); 6567 error = NFSERR_STALEWRITEVERF; 6568 } 6569 NFSUNLOCKDS(dsp); 6570 } 6571 nfsmout: 6572 if (error == 0 && nd->nd_repstat != 0) 6573 error = nd->nd_repstat; 6574 mbuf_freem(nd->nd_mrep); 6575 return (error); 6576 } 6577 6578 /* 6579 * Start up the thread that will execute nfsrpc_commitds(). 6580 */ 6581 static void 6582 start_commitds(void *arg, int pending) 6583 { 6584 struct nfsclwritedsdorpc *drpc; 6585 6586 drpc = (struct nfsclwritedsdorpc *)arg; 6587 drpc->err = nfsrpc_commitds(drpc->vp, drpc->off, drpc->len, 6588 drpc->dsp, drpc->fhp, drpc->vers, drpc->minorvers, drpc->cred, 6589 drpc->p); 6590 drpc->done = 1; 6591 NFSCL_DEBUG(4, "start_commitds: err=%d\n", drpc->err); 6592 } 6593 6594 /* 6595 * Set up the commit DS mirror call for the pNFS I/O thread. 6596 */ 6597 static int 6598 nfsio_commitds(vnode_t vp, uint64_t offset, int cnt, struct nfsclds *dsp, 6599 struct nfsfh *fhp, int vers, int minorvers, 6600 struct nfsclwritedsdorpc *drpc, struct ucred *cred, NFSPROC_T *p) 6601 { 6602 int error, ret; 6603 6604 error = 0; 6605 drpc->done = 0; 6606 drpc->vp = vp; 6607 drpc->off = offset; 6608 drpc->len = cnt; 6609 drpc->dsp = dsp; 6610 drpc->fhp = fhp; 6611 drpc->vers = vers; 6612 drpc->minorvers = minorvers; 6613 drpc->cred = cred; 6614 drpc->p = p; 6615 drpc->inprog = 0; 6616 ret = EIO; 6617 if (nfs_pnfsiothreads > 0) { 6618 ret = nfs_pnfsio(start_commitds, drpc); 6619 NFSCL_DEBUG(4, "nfsio_commitds: nfs_pnfsio=%d\n", ret); 6620 } 6621 if (ret != 0) 6622 error = nfsrpc_commitds(vp, offset, cnt, dsp, fhp, vers, 6623 minorvers, cred, p); 6624 NFSCL_DEBUG(4, "nfsio_commitds: error=%d\n", error); 6625 return (error); 6626 } 6627 6628 /* 6629 * Set up the XDR arguments for the LayoutGet operation. 6630 */ 6631 static void 6632 nfsrv_setuplayoutget(struct nfsrv_descript *nd, int iomode, uint64_t offset, 6633 uint64_t len, uint64_t minlen, nfsv4stateid_t *stateidp, int layouttype, 6634 int layoutlen, int usecurstateid) 6635 { 6636 uint32_t *tl; 6637 6638 NFSM_BUILD(tl, uint32_t *, 4 * NFSX_UNSIGNED + 3 * NFSX_HYPER + 6639 NFSX_STATEID); 6640 *tl++ = newnfs_false; /* Don't signal availability. */ 6641 *tl++ = txdr_unsigned(layouttype); 6642 *tl++ = txdr_unsigned(iomode); 6643 txdr_hyper(offset, tl); 6644 tl += 2; 6645 txdr_hyper(len, tl); 6646 tl += 2; 6647 txdr_hyper(minlen, tl); 6648 tl += 2; 6649 if (usecurstateid != 0) { 6650 /* Special stateid for Current stateid. */ 6651 *tl++ = txdr_unsigned(1); 6652 *tl++ = 0; 6653 *tl++ = 0; 6654 *tl++ = 0; 6655 } else { 6656 *tl++ = txdr_unsigned(stateidp->seqid); 6657 NFSCL_DEBUG(4, "layget seq=%d\n", (int)stateidp->seqid); 6658 *tl++ = stateidp->other[0]; 6659 *tl++ = stateidp->other[1]; 6660 *tl++ = stateidp->other[2]; 6661 } 6662 *tl = txdr_unsigned(layoutlen); 6663 } 6664 6665 /* 6666 * Parse the reply for a successful LayoutGet operation. 6667 */ 6668 static int 6669 nfsrv_parselayoutget(struct nfsrv_descript *nd, nfsv4stateid_t *stateidp, 6670 int *retonclosep, struct nfsclflayouthead *flhp) 6671 { 6672 uint32_t *tl; 6673 struct nfsclflayout *flp, *prevflp, *tflp; 6674 int cnt, error, fhcnt, gotiomode, i, iomode, j, k, l, laytype, nfhlen; 6675 int m, mirrorcnt; 6676 uint64_t retlen, off; 6677 struct nfsfh *nfhp; 6678 uint8_t *cp; 6679 uid_t user; 6680 gid_t grp; 6681 6682 NFSCL_DEBUG(4, "in nfsrv_parselayoutget\n"); 6683 error = 0; 6684 flp = NULL; 6685 gotiomode = -1; 6686 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED + NFSX_STATEID); 6687 if (*tl++ != 0) 6688 *retonclosep = 1; 6689 else 6690 *retonclosep = 0; 6691 stateidp->seqid = fxdr_unsigned(uint32_t, *tl++); 6692 NFSCL_DEBUG(4, "retoncls=%d stseq=%d\n", *retonclosep, 6693 (int)stateidp->seqid); 6694 stateidp->other[0] = *tl++; 6695 stateidp->other[1] = *tl++; 6696 stateidp->other[2] = *tl++; 6697 cnt = fxdr_unsigned(int, *tl); 6698 NFSCL_DEBUG(4, "layg cnt=%d\n", cnt); 6699 if (cnt <= 0 || cnt > 10000) { 6700 /* Don't accept more than 10000 layouts in reply. */ 6701 error = NFSERR_BADXDR; 6702 goto nfsmout; 6703 } 6704 for (i = 0; i < cnt; i++) { 6705 /* Dissect to the layout type. */ 6706 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_HYPER + 6707 3 * NFSX_UNSIGNED); 6708 off = fxdr_hyper(tl); tl += 2; 6709 retlen = fxdr_hyper(tl); tl += 2; 6710 iomode = fxdr_unsigned(int, *tl++); 6711 laytype = fxdr_unsigned(int, *tl); 6712 NFSCL_DEBUG(4, "layt=%d off=%ju len=%ju iom=%d\n", laytype, 6713 (uintmax_t)off, (uintmax_t)retlen, iomode); 6714 /* Ignore length of layout body for now. */ 6715 if (laytype == NFSLAYOUT_NFSV4_1_FILES) { 6716 /* Parse the File layout up to fhcnt. */ 6717 NFSM_DISSECT(tl, uint32_t *, 3 * NFSX_UNSIGNED + 6718 NFSX_HYPER + NFSX_V4DEVICEID); 6719 fhcnt = fxdr_unsigned(int, *(tl + 4 + 6720 NFSX_V4DEVICEID / NFSX_UNSIGNED)); 6721 NFSCL_DEBUG(4, "fhcnt=%d\n", fhcnt); 6722 if (fhcnt < 0 || fhcnt > 100) { 6723 /* Don't accept more than 100 file handles. */ 6724 error = NFSERR_BADXDR; 6725 goto nfsmout; 6726 } 6727 if (fhcnt > 0) 6728 flp = malloc(sizeof(*flp) + fhcnt * 6729 sizeof(struct nfsfh *), M_NFSFLAYOUT, 6730 M_WAITOK); 6731 else 6732 flp = malloc(sizeof(*flp), M_NFSFLAYOUT, 6733 M_WAITOK); 6734 flp->nfsfl_flags = NFSFL_FILE; 6735 flp->nfsfl_fhcnt = 0; 6736 flp->nfsfl_devp = NULL; 6737 flp->nfsfl_off = off; 6738 if (flp->nfsfl_off + retlen < flp->nfsfl_off) 6739 flp->nfsfl_end = UINT64_MAX - flp->nfsfl_off; 6740 else 6741 flp->nfsfl_end = flp->nfsfl_off + retlen; 6742 flp->nfsfl_iomode = iomode; 6743 if (gotiomode == -1) 6744 gotiomode = flp->nfsfl_iomode; 6745 /* Ignore layout body length for now. */ 6746 NFSBCOPY(tl, flp->nfsfl_dev, NFSX_V4DEVICEID); 6747 tl += (NFSX_V4DEVICEID / NFSX_UNSIGNED); 6748 flp->nfsfl_util = fxdr_unsigned(uint32_t, *tl++); 6749 NFSCL_DEBUG(4, "flutil=0x%x\n", flp->nfsfl_util); 6750 flp->nfsfl_stripe1 = fxdr_unsigned(uint32_t, *tl++); 6751 flp->nfsfl_patoff = fxdr_hyper(tl); tl += 2; 6752 NFSCL_DEBUG(4, "stripe1=%u poff=%ju\n", 6753 flp->nfsfl_stripe1, (uintmax_t)flp->nfsfl_patoff); 6754 for (j = 0; j < fhcnt; j++) { 6755 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 6756 nfhlen = fxdr_unsigned(int, *tl); 6757 if (nfhlen <= 0 || nfhlen > NFSX_V4FHMAX) { 6758 error = NFSERR_BADXDR; 6759 goto nfsmout; 6760 } 6761 nfhp = malloc(sizeof(*nfhp) + nfhlen - 1, 6762 M_NFSFH, M_WAITOK); 6763 flp->nfsfl_fh[j] = nfhp; 6764 flp->nfsfl_fhcnt++; 6765 nfhp->nfh_len = nfhlen; 6766 NFSM_DISSECT(cp, uint8_t *, NFSM_RNDUP(nfhlen)); 6767 NFSBCOPY(cp, nfhp->nfh_fh, nfhlen); 6768 } 6769 } else if (laytype == NFSLAYOUT_FLEXFILE) { 6770 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED + 6771 NFSX_HYPER); 6772 mirrorcnt = fxdr_unsigned(int, *(tl + 2)); 6773 NFSCL_DEBUG(4, "mirrorcnt=%d\n", mirrorcnt); 6774 if (mirrorcnt < 1 || mirrorcnt > NFSDEV_MAXMIRRORS) { 6775 error = NFSERR_BADXDR; 6776 goto nfsmout; 6777 } 6778 flp = malloc(sizeof(*flp) + mirrorcnt * 6779 sizeof(struct nfsffm), M_NFSFLAYOUT, M_WAITOK); 6780 flp->nfsfl_flags = NFSFL_FLEXFILE; 6781 flp->nfsfl_mirrorcnt = mirrorcnt; 6782 flp->nfsfl_devp = NULL; 6783 flp->nfsfl_off = off; 6784 if (flp->nfsfl_off + retlen < flp->nfsfl_off) 6785 flp->nfsfl_end = UINT64_MAX - flp->nfsfl_off; 6786 else 6787 flp->nfsfl_end = flp->nfsfl_off + retlen; 6788 flp->nfsfl_iomode = iomode; 6789 if (gotiomode == -1) 6790 gotiomode = flp->nfsfl_iomode; 6791 flp->nfsfl_stripeunit = fxdr_hyper(tl); 6792 NFSCL_DEBUG(4, "stripeunit=%ju\n", 6793 (uintmax_t)flp->nfsfl_stripeunit); 6794 for (j = 0; j < mirrorcnt; j++) { 6795 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 6796 k = fxdr_unsigned(int, *tl); 6797 if (k < 1 || k > 128) { 6798 error = NFSERR_BADXDR; 6799 goto nfsmout; 6800 } 6801 NFSCL_DEBUG(4, "servercnt=%d\n", k); 6802 for (l = 0; l < k; l++) { 6803 NFSM_DISSECT(tl, uint32_t *, 6804 NFSX_V4DEVICEID + NFSX_STATEID + 6805 2 * NFSX_UNSIGNED); 6806 if (l == 0) { 6807 /* Just use the first server. */ 6808 NFSBCOPY(tl, 6809 flp->nfsfl_ffm[j].dev, 6810 NFSX_V4DEVICEID); 6811 tl += (NFSX_V4DEVICEID / 6812 NFSX_UNSIGNED); 6813 tl++; 6814 flp->nfsfl_ffm[j].st.seqid = 6815 *tl++; 6816 flp->nfsfl_ffm[j].st.other[0] = 6817 *tl++; 6818 flp->nfsfl_ffm[j].st.other[1] = 6819 *tl++; 6820 flp->nfsfl_ffm[j].st.other[2] = 6821 *tl++; 6822 NFSCL_DEBUG(4, "st.seqid=%u " 6823 "st.o0=0x%x st.o1=0x%x " 6824 "st.o2=0x%x\n", 6825 flp->nfsfl_ffm[j].st.seqid, 6826 flp->nfsfl_ffm[j].st.other[0], 6827 flp->nfsfl_ffm[j].st.other[1], 6828 flp->nfsfl_ffm[j].st.other[2]); 6829 } else 6830 tl += ((NFSX_V4DEVICEID + 6831 NFSX_STATEID + 6832 NFSX_UNSIGNED) / 6833 NFSX_UNSIGNED); 6834 fhcnt = fxdr_unsigned(int, *tl); 6835 NFSCL_DEBUG(4, "fhcnt=%d\n", fhcnt); 6836 if (fhcnt < 1 || 6837 fhcnt > NFSDEV_MAXVERS) { 6838 error = NFSERR_BADXDR; 6839 goto nfsmout; 6840 } 6841 for (m = 0; m < fhcnt; m++) { 6842 NFSM_DISSECT(tl, uint32_t *, 6843 NFSX_UNSIGNED); 6844 nfhlen = fxdr_unsigned(int, 6845 *tl); 6846 NFSCL_DEBUG(4, "nfhlen=%d\n", 6847 nfhlen); 6848 if (nfhlen <= 0 || nfhlen > 6849 NFSX_V4FHMAX) { 6850 error = NFSERR_BADXDR; 6851 goto nfsmout; 6852 } 6853 NFSM_DISSECT(cp, uint8_t *, 6854 NFSM_RNDUP(nfhlen)); 6855 if (l == 0) { 6856 flp->nfsfl_ffm[j].fhcnt 6857 = fhcnt; 6858 nfhp = malloc( 6859 sizeof(*nfhp) + 6860 nfhlen - 1, M_NFSFH, 6861 M_WAITOK); 6862 flp->nfsfl_ffm[j].fh[m] 6863 = nfhp; 6864 nfhp->nfh_len = nfhlen; 6865 NFSBCOPY(cp, 6866 nfhp->nfh_fh, 6867 nfhlen); 6868 NFSCL_DEBUG(4, 6869 "got fh\n"); 6870 } 6871 } 6872 /* Now, get the ffsd_user/ffds_group. */ 6873 error = nfsrv_parseug(nd, 0, &user, 6874 &grp, curthread); 6875 NFSCL_DEBUG(4, "after parseu=%d\n", 6876 error); 6877 if (error == 0) 6878 error = nfsrv_parseug(nd, 1, 6879 &user, &grp, curthread); 6880 NFSCL_DEBUG(4, "aft parseg=%d\n", 6881 grp); 6882 if (error != 0) 6883 goto nfsmout; 6884 NFSCL_DEBUG(4, "user=%d group=%d\n", 6885 user, grp); 6886 if (l == 0) { 6887 flp->nfsfl_ffm[j].user = user; 6888 flp->nfsfl_ffm[j].group = grp; 6889 NFSCL_DEBUG(4, 6890 "usr=%d grp=%d\n", user, 6891 grp); 6892 } 6893 } 6894 } 6895 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED); 6896 flp->nfsfl_fflags = fxdr_unsigned(uint32_t, *tl++); 6897 flp->nfsfl_statshint = fxdr_unsigned(uint32_t, *tl); 6898 NFSCL_DEBUG(4, "fflags=0x%x statshint=%d\n", 6899 flp->nfsfl_fflags, flp->nfsfl_statshint); 6900 } else { 6901 error = NFSERR_BADXDR; 6902 goto nfsmout; 6903 } 6904 if (flp->nfsfl_iomode == gotiomode) { 6905 /* Keep the list in increasing offset order. */ 6906 tflp = LIST_FIRST(flhp); 6907 prevflp = NULL; 6908 while (tflp != NULL && 6909 tflp->nfsfl_off < flp->nfsfl_off) { 6910 prevflp = tflp; 6911 tflp = LIST_NEXT(tflp, nfsfl_list); 6912 } 6913 if (prevflp == NULL) 6914 LIST_INSERT_HEAD(flhp, flp, nfsfl_list); 6915 else 6916 LIST_INSERT_AFTER(prevflp, flp, 6917 nfsfl_list); 6918 NFSCL_DEBUG(4, "flp inserted\n"); 6919 } else { 6920 printf("nfscl_layoutget(): got wrong iomode\n"); 6921 nfscl_freeflayout(flp); 6922 } 6923 flp = NULL; 6924 } 6925 nfsmout: 6926 NFSCL_DEBUG(4, "eo nfsrv_parselayoutget=%d\n", error); 6927 if (error != 0 && flp != NULL) 6928 nfscl_freeflayout(flp); 6929 return (error); 6930 } 6931 6932 /* 6933 * Parse a user/group digit string. 6934 */ 6935 static int 6936 nfsrv_parseug(struct nfsrv_descript *nd, int dogrp, uid_t *uidp, gid_t *gidp, 6937 NFSPROC_T *p) 6938 { 6939 uint32_t *tl; 6940 char *cp, *str, str0[NFSV4_SMALLSTR + 1]; 6941 uint32_t len = 0; 6942 int error = 0; 6943 6944 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 6945 len = fxdr_unsigned(uint32_t, *tl); 6946 if (len > NFSV4_OPAQUELIMIT) { 6947 error = NFSERR_BADXDR; 6948 goto nfsmout; 6949 } 6950 NFSCL_DEBUG(4, "nfsrv_parseug: len=%d\n", len); 6951 if (len == 0) { 6952 if (dogrp != 0) 6953 *gidp = GID_NOGROUP; 6954 else 6955 *uidp = UID_NOBODY; 6956 return (0); 6957 } 6958 if (len > NFSV4_SMALLSTR) 6959 str = malloc(len + 1, M_TEMP, M_WAITOK); 6960 else 6961 str = str0; 6962 NFSM_DISSECT(cp, char *, NFSM_RNDUP(len)); 6963 NFSBCOPY(cp, str, len); 6964 str[len] = '\0'; 6965 NFSCL_DEBUG(4, "nfsrv_parseug: str=%s\n", str); 6966 if (dogrp != 0) 6967 error = nfsv4_strtogid(nd, str, len, gidp, p); 6968 else 6969 error = nfsv4_strtouid(nd, str, len, uidp, p); 6970 nfsmout: 6971 if (len > NFSV4_SMALLSTR) 6972 free(str, M_TEMP); 6973 NFSCL_DEBUG(4, "eo nfsrv_parseug=%d\n", error); 6974 return (error); 6975 } 6976 6977 /* 6978 * Similar to nfsrpc_getlayout(), except that it uses nfsrpc_openlayget(), 6979 * so that it does both an Open and a Layoutget. 6980 */ 6981 static int 6982 nfsrpc_getopenlayout(struct nfsmount *nmp, vnode_t vp, u_int8_t *nfhp, 6983 int fhlen, uint8_t *newfhp, int newfhlen, uint32_t mode, 6984 struct nfsclopen *op, uint8_t *name, int namelen, struct nfscldeleg **dpp, 6985 struct ucred *cred, NFSPROC_T *p) 6986 { 6987 struct nfscllayout *lyp; 6988 struct nfsclflayout *flp; 6989 struct nfsclflayouthead flh; 6990 int error, islocked, layoutlen, recalled, retonclose, usecurstateid; 6991 int layouttype, laystat; 6992 nfsv4stateid_t stateid; 6993 struct nfsclsession *tsep; 6994 6995 error = 0; 6996 if (NFSHASFLEXFILE(nmp)) 6997 layouttype = NFSLAYOUT_FLEXFILE; 6998 else 6999 layouttype = NFSLAYOUT_NFSV4_1_FILES; 7000 /* 7001 * If lyp is returned non-NULL, there will be a refcnt (shared lock) 7002 * on it, iff flp != NULL or a lock (exclusive lock) on it iff 7003 * flp == NULL. 7004 */ 7005 lyp = nfscl_getlayout(nmp->nm_clp, newfhp, newfhlen, 0, &flp, 7006 &recalled); 7007 NFSCL_DEBUG(4, "nfsrpc_getopenlayout nfscl_getlayout lyp=%p\n", lyp); 7008 if (lyp == NULL) 7009 islocked = 0; 7010 else if (flp != NULL) 7011 islocked = 1; 7012 else 7013 islocked = 2; 7014 if ((lyp == NULL || flp == NULL) && recalled == 0) { 7015 LIST_INIT(&flh); 7016 tsep = nfsmnt_mdssession(nmp); 7017 layoutlen = tsep->nfsess_maxcache - (NFSX_STATEID + 7018 3 * NFSX_UNSIGNED); 7019 if (lyp == NULL) 7020 usecurstateid = 1; 7021 else { 7022 usecurstateid = 0; 7023 stateid.seqid = lyp->nfsly_stateid.seqid; 7024 stateid.other[0] = lyp->nfsly_stateid.other[0]; 7025 stateid.other[1] = lyp->nfsly_stateid.other[1]; 7026 stateid.other[2] = lyp->nfsly_stateid.other[2]; 7027 } 7028 error = nfsrpc_openlayoutrpc(nmp, vp, nfhp, fhlen, 7029 newfhp, newfhlen, mode, op, name, namelen, 7030 dpp, &stateid, usecurstateid, layouttype, layoutlen, 7031 &retonclose, &flh, &laystat, cred, p); 7032 NFSCL_DEBUG(4, "aft nfsrpc_openlayoutrpc laystat=%d err=%d\n", 7033 laystat, error); 7034 laystat = nfsrpc_layoutgetres(nmp, vp, newfhp, newfhlen, 7035 &stateid, retonclose, NULL, &lyp, &flh, layouttype, laystat, 7036 &islocked, cred, p); 7037 } else 7038 error = nfsrpc_openrpc(nmp, vp, nfhp, fhlen, newfhp, newfhlen, 7039 mode, op, name, namelen, dpp, 0, 0, cred, p, 0, 0); 7040 if (islocked == 2) 7041 nfscl_rellayout(lyp, 1); 7042 else if (islocked == 1) 7043 nfscl_rellayout(lyp, 0); 7044 return (error); 7045 } 7046 7047 /* 7048 * This function does an Open+LayoutGet for an NFSv4.1 mount with pNFS 7049 * enabled, only for the CLAIM_NULL case. All other NFSv4 Opens are 7050 * handled by nfsrpc_openrpc(). 7051 * For the case where op == NULL, dvp is the directory. When op != NULL, it 7052 * can be NULL. 7053 */ 7054 static int 7055 nfsrpc_openlayoutrpc(struct nfsmount *nmp, vnode_t vp, u_int8_t *nfhp, 7056 int fhlen, uint8_t *newfhp, int newfhlen, uint32_t mode, 7057 struct nfsclopen *op, uint8_t *name, int namelen, struct nfscldeleg **dpp, 7058 nfsv4stateid_t *stateidp, int usecurstateid, int layouttype, 7059 int layoutlen, int *retonclosep, struct nfsclflayouthead *flhp, 7060 int *laystatp, struct ucred *cred, NFSPROC_T *p) 7061 { 7062 uint32_t *tl; 7063 struct nfsrv_descript nfsd, *nd = &nfsd; 7064 struct nfscldeleg *ndp = NULL; 7065 struct nfsvattr nfsva; 7066 struct nfsclsession *tsep; 7067 uint32_t rflags, deleg; 7068 nfsattrbit_t attrbits; 7069 int error, ret, acesize, limitby, iomode; 7070 7071 *dpp = NULL; 7072 *laystatp = ENXIO; 7073 nfscl_reqstart(nd, NFSPROC_OPENLAYGET, nmp, nfhp, fhlen, NULL, NULL, 7074 0, 0); 7075 NFSM_BUILD(tl, uint32_t *, 5 * NFSX_UNSIGNED); 7076 *tl++ = txdr_unsigned(op->nfso_own->nfsow_seqid); 7077 *tl++ = txdr_unsigned(mode & NFSV4OPEN_ACCESSBOTH); 7078 *tl++ = txdr_unsigned((mode >> NFSLCK_SHIFT) & NFSV4OPEN_DENYBOTH); 7079 tsep = nfsmnt_mdssession(nmp); 7080 *tl++ = tsep->nfsess_clientid.lval[0]; 7081 *tl = tsep->nfsess_clientid.lval[1]; 7082 nfsm_strtom(nd, op->nfso_own->nfsow_owner, NFSV4CL_LOCKNAMELEN); 7083 NFSM_BUILD(tl, uint32_t *, 2 * NFSX_UNSIGNED); 7084 *tl++ = txdr_unsigned(NFSV4OPEN_NOCREATE); 7085 *tl = txdr_unsigned(NFSV4OPEN_CLAIMNULL); 7086 nfsm_strtom(nd, name, namelen); 7087 NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED); 7088 *tl = txdr_unsigned(NFSV4OP_GETATTR); 7089 NFSZERO_ATTRBIT(&attrbits); 7090 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_CHANGE); 7091 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_TIMEMODIFY); 7092 nfsrv_putattrbit(nd, &attrbits); 7093 NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED); 7094 *tl = txdr_unsigned(NFSV4OP_LAYOUTGET); 7095 if ((mode & NFSV4OPEN_ACCESSWRITE) != 0) 7096 iomode = NFSLAYOUTIOMODE_RW; 7097 else 7098 iomode = NFSLAYOUTIOMODE_READ; 7099 nfsrv_setuplayoutget(nd, iomode, 0, UINT64_MAX, 0, stateidp, 7100 layouttype, layoutlen, usecurstateid); 7101 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, vp, p, cred, 7102 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 7103 if (error != 0) 7104 return (error); 7105 NFSCL_INCRSEQID(op->nfso_own->nfsow_seqid, nd); 7106 if (nd->nd_repstat != 0) 7107 *laystatp = nd->nd_repstat; 7108 if ((nd->nd_flag & ND_NOMOREDATA) == 0) { 7109 /* ND_NOMOREDATA will be set if the Open operation failed. */ 7110 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID + 7111 6 * NFSX_UNSIGNED); 7112 op->nfso_stateid.seqid = *tl++; 7113 op->nfso_stateid.other[0] = *tl++; 7114 op->nfso_stateid.other[1] = *tl++; 7115 op->nfso_stateid.other[2] = *tl; 7116 rflags = fxdr_unsigned(u_int32_t, *(tl + 6)); 7117 error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL); 7118 if (error != 0) 7119 goto nfsmout; 7120 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 7121 deleg = fxdr_unsigned(u_int32_t, *tl); 7122 if (deleg == NFSV4OPEN_DELEGATEREAD || 7123 deleg == NFSV4OPEN_DELEGATEWRITE) { 7124 if (!(op->nfso_own->nfsow_clp->nfsc_flags & 7125 NFSCLFLAGS_FIRSTDELEG)) 7126 op->nfso_own->nfsow_clp->nfsc_flags |= 7127 (NFSCLFLAGS_FIRSTDELEG | NFSCLFLAGS_GOTDELEG); 7128 ndp = malloc(sizeof(struct nfscldeleg) + newfhlen, 7129 M_NFSCLDELEG, M_WAITOK); 7130 LIST_INIT(&ndp->nfsdl_owner); 7131 LIST_INIT(&ndp->nfsdl_lock); 7132 ndp->nfsdl_clp = op->nfso_own->nfsow_clp; 7133 ndp->nfsdl_fhlen = newfhlen; 7134 NFSBCOPY(newfhp, ndp->nfsdl_fh, newfhlen); 7135 newnfs_copyincred(cred, &ndp->nfsdl_cred); 7136 nfscl_lockinit(&ndp->nfsdl_rwlock); 7137 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID + 7138 NFSX_UNSIGNED); 7139 ndp->nfsdl_stateid.seqid = *tl++; 7140 ndp->nfsdl_stateid.other[0] = *tl++; 7141 ndp->nfsdl_stateid.other[1] = *tl++; 7142 ndp->nfsdl_stateid.other[2] = *tl++; 7143 ret = fxdr_unsigned(int, *tl); 7144 if (deleg == NFSV4OPEN_DELEGATEWRITE) { 7145 ndp->nfsdl_flags = NFSCLDL_WRITE; 7146 /* 7147 * Indicates how much the file can grow. 7148 */ 7149 NFSM_DISSECT(tl, u_int32_t *, 7150 3 * NFSX_UNSIGNED); 7151 limitby = fxdr_unsigned(int, *tl++); 7152 switch (limitby) { 7153 case NFSV4OPEN_LIMITSIZE: 7154 ndp->nfsdl_sizelimit = fxdr_hyper(tl); 7155 break; 7156 case NFSV4OPEN_LIMITBLOCKS: 7157 ndp->nfsdl_sizelimit = 7158 fxdr_unsigned(u_int64_t, *tl++); 7159 ndp->nfsdl_sizelimit *= 7160 fxdr_unsigned(u_int64_t, *tl); 7161 break; 7162 default: 7163 error = NFSERR_BADXDR; 7164 goto nfsmout; 7165 }; 7166 } else 7167 ndp->nfsdl_flags = NFSCLDL_READ; 7168 if (ret != 0) 7169 ndp->nfsdl_flags |= NFSCLDL_RECALL; 7170 error = nfsrv_dissectace(nd, &ndp->nfsdl_ace, &ret, 7171 &acesize, p); 7172 if (error != 0) 7173 goto nfsmout; 7174 } else if (deleg != NFSV4OPEN_DELEGATENONE) { 7175 error = NFSERR_BADXDR; 7176 goto nfsmout; 7177 } 7178 if ((rflags & NFSV4OPEN_LOCKTYPEPOSIX) != 0 || 7179 nfscl_assumeposixlocks) 7180 op->nfso_posixlock = 1; 7181 else 7182 op->nfso_posixlock = 0; 7183 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 7184 /* If the 2nd element == NFS_OK, the Getattr succeeded. */ 7185 if (*++tl == 0) { 7186 error = nfsv4_loadattr(nd, NULL, &nfsva, NULL, 7187 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0, 7188 NULL, NULL, NULL, p, cred); 7189 if (error != 0) 7190 goto nfsmout; 7191 if (ndp != NULL) { 7192 ndp->nfsdl_change = nfsva.na_filerev; 7193 ndp->nfsdl_modtime = nfsva.na_mtime; 7194 ndp->nfsdl_flags |= NFSCLDL_MODTIMESET; 7195 *dpp = ndp; 7196 ndp = NULL; 7197 } 7198 /* 7199 * At this point, the Open has succeeded, so set 7200 * nd_repstat = NFS_OK. If the Layoutget failed, 7201 * this function just won't return a layout. 7202 */ 7203 if (nd->nd_repstat == 0) { 7204 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED); 7205 *laystatp = fxdr_unsigned(int, *++tl); 7206 if (*laystatp == 0) { 7207 error = nfsrv_parselayoutget(nd, 7208 stateidp, retonclosep, flhp); 7209 if (error != 0) 7210 *laystatp = error; 7211 } 7212 } else 7213 nd->nd_repstat = 0; /* Return 0 for Open. */ 7214 } 7215 } 7216 if (nd->nd_repstat != 0 && error == 0) 7217 error = nd->nd_repstat; 7218 nfsmout: 7219 free(ndp, M_NFSCLDELEG); 7220 mbuf_freem(nd->nd_mrep); 7221 return (error); 7222 } 7223 7224 /* 7225 * Similar nfsrpc_createv4(), but also does the LayoutGet operation. 7226 * Used only for mounts with pNFS enabled. 7227 */ 7228 static int 7229 nfsrpc_createlayout(vnode_t dvp, char *name, int namelen, struct vattr *vap, 7230 nfsquad_t cverf, int fmode, struct nfsclowner *owp, struct nfscldeleg **dpp, 7231 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap, 7232 struct nfsvattr *nnap, struct nfsfh **nfhpp, int *attrflagp, 7233 int *dattrflagp, void *dstuff, int *unlockedp, nfsv4stateid_t *stateidp, 7234 int usecurstateid, int layouttype, int layoutlen, int *retonclosep, 7235 struct nfsclflayouthead *flhp, int *laystatp) 7236 { 7237 uint32_t *tl; 7238 int error = 0, deleg, newone, ret, acesize, limitby; 7239 struct nfsrv_descript nfsd, *nd = &nfsd; 7240 struct nfsclopen *op; 7241 struct nfscldeleg *dp = NULL; 7242 struct nfsnode *np; 7243 struct nfsfh *nfhp; 7244 struct nfsclsession *tsep; 7245 nfsattrbit_t attrbits; 7246 nfsv4stateid_t stateid; 7247 uint32_t rflags; 7248 struct nfsmount *nmp; 7249 7250 nmp = VFSTONFS(dvp->v_mount); 7251 np = VTONFS(dvp); 7252 *laystatp = ENXIO; 7253 *unlockedp = 0; 7254 *nfhpp = NULL; 7255 *dpp = NULL; 7256 *attrflagp = 0; 7257 *dattrflagp = 0; 7258 if (namelen > NFS_MAXNAMLEN) 7259 return (ENAMETOOLONG); 7260 NFSCL_REQSTART(nd, NFSPROC_CREATELAYGET, dvp); 7261 /* 7262 * For V4, this is actually an Open op. 7263 */ 7264 NFSM_BUILD(tl, u_int32_t *, 5 * NFSX_UNSIGNED); 7265 *tl++ = txdr_unsigned(owp->nfsow_seqid); 7266 *tl++ = txdr_unsigned(NFSV4OPEN_ACCESSWRITE | 7267 NFSV4OPEN_ACCESSREAD); 7268 *tl++ = txdr_unsigned(NFSV4OPEN_DENYNONE); 7269 tsep = nfsmnt_mdssession(nmp); 7270 *tl++ = tsep->nfsess_clientid.lval[0]; 7271 *tl = tsep->nfsess_clientid.lval[1]; 7272 nfsm_strtom(nd, owp->nfsow_owner, NFSV4CL_LOCKNAMELEN); 7273 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 7274 *tl++ = txdr_unsigned(NFSV4OPEN_CREATE); 7275 if ((fmode & O_EXCL) != 0) { 7276 if (NFSHASSESSPERSIST(nmp)) { 7277 /* Use GUARDED for persistent sessions. */ 7278 *tl = txdr_unsigned(NFSCREATE_GUARDED); 7279 nfscl_fillsattr(nd, vap, dvp, 0, 0); 7280 } else { 7281 /* Otherwise, use EXCLUSIVE4_1. */ 7282 *tl = txdr_unsigned(NFSCREATE_EXCLUSIVE41); 7283 NFSM_BUILD(tl, u_int32_t *, NFSX_VERF); 7284 *tl++ = cverf.lval[0]; 7285 *tl = cverf.lval[1]; 7286 nfscl_fillsattr(nd, vap, dvp, 0, 0); 7287 } 7288 } else { 7289 *tl = txdr_unsigned(NFSCREATE_UNCHECKED); 7290 nfscl_fillsattr(nd, vap, dvp, 0, 0); 7291 } 7292 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 7293 *tl = txdr_unsigned(NFSV4OPEN_CLAIMNULL); 7294 nfsm_strtom(nd, name, namelen); 7295 /* Get the new file's handle and attributes, plus save the FH. */ 7296 NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 7297 *tl++ = txdr_unsigned(NFSV4OP_SAVEFH); 7298 *tl++ = txdr_unsigned(NFSV4OP_GETFH); 7299 *tl = txdr_unsigned(NFSV4OP_GETATTR); 7300 NFSGETATTR_ATTRBIT(&attrbits); 7301 nfsrv_putattrbit(nd, &attrbits); 7302 /* Get the directory's post-op attributes. */ 7303 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 7304 *tl = txdr_unsigned(NFSV4OP_PUTFH); 7305 nfsm_fhtom(nd, np->n_fhp->nfh_fh, np->n_fhp->nfh_len, 0); 7306 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 7307 *tl = txdr_unsigned(NFSV4OP_GETATTR); 7308 nfsrv_putattrbit(nd, &attrbits); 7309 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 7310 *tl++ = txdr_unsigned(NFSV4OP_RESTOREFH); 7311 *tl = txdr_unsigned(NFSV4OP_LAYOUTGET); 7312 nfsrv_setuplayoutget(nd, NFSLAYOUTIOMODE_RW, 0, UINT64_MAX, 0, stateidp, 7313 layouttype, layoutlen, usecurstateid); 7314 error = nfscl_request(nd, dvp, p, cred, dstuff); 7315 if (error != 0) 7316 return (error); 7317 NFSCL_DEBUG(4, "nfsrpc_createlayout stat=%d err=%d\n", nd->nd_repstat, 7318 error); 7319 if (nd->nd_repstat != 0) 7320 *laystatp = nd->nd_repstat; 7321 NFSCL_INCRSEQID(owp->nfsow_seqid, nd); 7322 if ((nd->nd_flag & ND_NOMOREDATA) == 0) { 7323 NFSCL_DEBUG(4, "nfsrpc_createlayout open succeeded\n"); 7324 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID + 7325 6 * NFSX_UNSIGNED); 7326 stateid.seqid = *tl++; 7327 stateid.other[0] = *tl++; 7328 stateid.other[1] = *tl++; 7329 stateid.other[2] = *tl; 7330 rflags = fxdr_unsigned(u_int32_t, *(tl + 6)); 7331 nfsrv_getattrbits(nd, &attrbits, NULL, NULL); 7332 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 7333 deleg = fxdr_unsigned(int, *tl); 7334 if (deleg == NFSV4OPEN_DELEGATEREAD || 7335 deleg == NFSV4OPEN_DELEGATEWRITE) { 7336 if (!(owp->nfsow_clp->nfsc_flags & 7337 NFSCLFLAGS_FIRSTDELEG)) 7338 owp->nfsow_clp->nfsc_flags |= 7339 (NFSCLFLAGS_FIRSTDELEG | NFSCLFLAGS_GOTDELEG); 7340 dp = malloc(sizeof(struct nfscldeleg) + NFSX_V4FHMAX, 7341 M_NFSCLDELEG, M_WAITOK); 7342 LIST_INIT(&dp->nfsdl_owner); 7343 LIST_INIT(&dp->nfsdl_lock); 7344 dp->nfsdl_clp = owp->nfsow_clp; 7345 newnfs_copyincred(cred, &dp->nfsdl_cred); 7346 nfscl_lockinit(&dp->nfsdl_rwlock); 7347 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID + 7348 NFSX_UNSIGNED); 7349 dp->nfsdl_stateid.seqid = *tl++; 7350 dp->nfsdl_stateid.other[0] = *tl++; 7351 dp->nfsdl_stateid.other[1] = *tl++; 7352 dp->nfsdl_stateid.other[2] = *tl++; 7353 ret = fxdr_unsigned(int, *tl); 7354 if (deleg == NFSV4OPEN_DELEGATEWRITE) { 7355 dp->nfsdl_flags = NFSCLDL_WRITE; 7356 /* 7357 * Indicates how much the file can grow. 7358 */ 7359 NFSM_DISSECT(tl, u_int32_t *, 7360 3 * NFSX_UNSIGNED); 7361 limitby = fxdr_unsigned(int, *tl++); 7362 switch (limitby) { 7363 case NFSV4OPEN_LIMITSIZE: 7364 dp->nfsdl_sizelimit = fxdr_hyper(tl); 7365 break; 7366 case NFSV4OPEN_LIMITBLOCKS: 7367 dp->nfsdl_sizelimit = 7368 fxdr_unsigned(u_int64_t, *tl++); 7369 dp->nfsdl_sizelimit *= 7370 fxdr_unsigned(u_int64_t, *tl); 7371 break; 7372 default: 7373 error = NFSERR_BADXDR; 7374 goto nfsmout; 7375 }; 7376 } else { 7377 dp->nfsdl_flags = NFSCLDL_READ; 7378 } 7379 if (ret != 0) 7380 dp->nfsdl_flags |= NFSCLDL_RECALL; 7381 error = nfsrv_dissectace(nd, &dp->nfsdl_ace, &ret, 7382 &acesize, p); 7383 if (error != 0) 7384 goto nfsmout; 7385 } else if (deleg != NFSV4OPEN_DELEGATENONE) { 7386 error = NFSERR_BADXDR; 7387 goto nfsmout; 7388 } 7389 7390 /* Now, we should have the status for the SaveFH. */ 7391 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED); 7392 if (*++tl == 0) { 7393 NFSCL_DEBUG(4, "nfsrpc_createlayout SaveFH ok\n"); 7394 /* 7395 * Now, process the GetFH and Getattr for the newly 7396 * created file. nfscl_mtofh() will set 7397 * ND_NOMOREDATA if these weren't successful. 7398 */ 7399 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp); 7400 NFSCL_DEBUG(4, "aft nfscl_mtofh err=%d\n", error); 7401 if (error != 0) 7402 goto nfsmout; 7403 } else 7404 nd->nd_flag |= ND_NOMOREDATA; 7405 /* Now we have the PutFH and Getattr for the directory. */ 7406 if ((nd->nd_flag & ND_NOMOREDATA) == 0) { 7407 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED); 7408 if (*++tl != 0) 7409 nd->nd_flag |= ND_NOMOREDATA; 7410 else { 7411 NFSM_DISSECT(tl, uint32_t *, 2 * 7412 NFSX_UNSIGNED); 7413 if (*++tl != 0) 7414 nd->nd_flag |= ND_NOMOREDATA; 7415 } 7416 } 7417 if ((nd->nd_flag & ND_NOMOREDATA) == 0) { 7418 /* Load the directory attributes. */ 7419 error = nfsm_loadattr(nd, dnap); 7420 NFSCL_DEBUG(4, "aft nfsm_loadattr err=%d\n", error); 7421 if (error != 0) 7422 goto nfsmout; 7423 *dattrflagp = 1; 7424 if (dp != NULL && *attrflagp != 0) { 7425 dp->nfsdl_change = nnap->na_filerev; 7426 dp->nfsdl_modtime = nnap->na_mtime; 7427 dp->nfsdl_flags |= NFSCLDL_MODTIMESET; 7428 } 7429 /* 7430 * We can now complete the Open state. 7431 */ 7432 nfhp = *nfhpp; 7433 if (dp != NULL) { 7434 dp->nfsdl_fhlen = nfhp->nfh_len; 7435 NFSBCOPY(nfhp->nfh_fh, dp->nfsdl_fh, 7436 nfhp->nfh_len); 7437 } 7438 /* 7439 * Get an Open structure that will be 7440 * attached to the OpenOwner, acquired already. 7441 */ 7442 error = nfscl_open(dvp, nfhp->nfh_fh, nfhp->nfh_len, 7443 (NFSV4OPEN_ACCESSWRITE | NFSV4OPEN_ACCESSREAD), 0, 7444 cred, p, NULL, &op, &newone, NULL, 0); 7445 if (error != 0) 7446 goto nfsmout; 7447 op->nfso_stateid = stateid; 7448 newnfs_copyincred(cred, &op->nfso_cred); 7449 7450 nfscl_openrelease(nmp, op, error, newone); 7451 *unlockedp = 1; 7452 7453 /* Now, handle the RestoreFH and LayoutGet. */ 7454 if (nd->nd_repstat == 0) { 7455 NFSM_DISSECT(tl, uint32_t *, 4 * NFSX_UNSIGNED); 7456 *laystatp = fxdr_unsigned(int, *(tl + 3)); 7457 if (*laystatp == 0) { 7458 error = nfsrv_parselayoutget(nd, 7459 stateidp, retonclosep, flhp); 7460 if (error != 0) 7461 *laystatp = error; 7462 } 7463 NFSCL_DEBUG(4, "aft nfsrv_parselayout err=%d\n", 7464 error); 7465 } else 7466 nd->nd_repstat = 0; 7467 } 7468 } 7469 if (nd->nd_repstat != 0 && error == 0) 7470 error = nd->nd_repstat; 7471 if (error == NFSERR_STALECLIENTID || error == NFSERR_BADSESSION) 7472 nfscl_initiate_recovery(owp->nfsow_clp); 7473 nfsmout: 7474 NFSCL_DEBUG(4, "eo nfsrpc_createlayout err=%d\n", error); 7475 if (error == 0) 7476 *dpp = dp; 7477 else 7478 free(dp, M_NFSCLDELEG); 7479 mbuf_freem(nd->nd_mrep); 7480 return (error); 7481 } 7482 7483 /* 7484 * Similar to nfsrpc_getopenlayout(), except that it used for the Create case. 7485 */ 7486 static int 7487 nfsrpc_getcreatelayout(vnode_t dvp, char *name, int namelen, struct vattr *vap, 7488 nfsquad_t cverf, int fmode, struct nfsclowner *owp, struct nfscldeleg **dpp, 7489 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap, 7490 struct nfsvattr *nnap, struct nfsfh **nfhpp, int *attrflagp, 7491 int *dattrflagp, void *dstuff, int *unlockedp) 7492 { 7493 struct nfscllayout *lyp; 7494 struct nfsclflayouthead flh; 7495 struct nfsfh *nfhp; 7496 struct nfsclsession *tsep; 7497 struct nfsmount *nmp; 7498 nfsv4stateid_t stateid; 7499 int error, layoutlen, layouttype, retonclose, laystat; 7500 7501 error = 0; 7502 nmp = VFSTONFS(dvp->v_mount); 7503 if (NFSHASFLEXFILE(nmp)) 7504 layouttype = NFSLAYOUT_FLEXFILE; 7505 else 7506 layouttype = NFSLAYOUT_NFSV4_1_FILES; 7507 LIST_INIT(&flh); 7508 tsep = nfsmnt_mdssession(nmp); 7509 layoutlen = tsep->nfsess_maxcache - (NFSX_STATEID + 3 * NFSX_UNSIGNED); 7510 error = nfsrpc_createlayout(dvp, name, namelen, vap, cverf, fmode, 7511 owp, dpp, cred, p, dnap, nnap, nfhpp, attrflagp, dattrflagp, 7512 dstuff, unlockedp, &stateid, 1, layouttype, layoutlen, &retonclose, 7513 &flh, &laystat); 7514 NFSCL_DEBUG(4, "aft nfsrpc_createlayoutrpc laystat=%d err=%d\n", 7515 laystat, error); 7516 lyp = NULL; 7517 if (laystat == 0) { 7518 nfhp = *nfhpp; 7519 laystat = nfsrpc_layoutgetres(nmp, dvp, nfhp->nfh_fh, 7520 nfhp->nfh_len, &stateid, retonclose, NULL, &lyp, &flh, 7521 layouttype, laystat, NULL, cred, p); 7522 } else 7523 laystat = nfsrpc_layoutgetres(nmp, dvp, NULL, 0, &stateid, 7524 retonclose, NULL, &lyp, &flh, layouttype, laystat, NULL, 7525 cred, p); 7526 if (laystat == 0) 7527 nfscl_rellayout(lyp, 0); 7528 return (error); 7529 } 7530 7531 /* 7532 * Process the results of a layoutget() operation. 7533 */ 7534 static int 7535 nfsrpc_layoutgetres(struct nfsmount *nmp, vnode_t vp, uint8_t *newfhp, 7536 int newfhlen, nfsv4stateid_t *stateidp, int retonclose, uint32_t *notifybit, 7537 struct nfscllayout **lypp, struct nfsclflayouthead *flhp, int layouttype, 7538 int laystat, int *islockedp, struct ucred *cred, NFSPROC_T *p) 7539 { 7540 struct nfsclflayout *tflp; 7541 struct nfscldevinfo *dip; 7542 uint8_t *dev; 7543 7544 if (laystat == NFSERR_UNKNLAYOUTTYPE) { 7545 NFSLOCKMNT(nmp); 7546 if (!NFSHASFLEXFILE(nmp)) { 7547 /* Switch to using Flex File Layout. */ 7548 nmp->nm_state |= NFSSTA_FLEXFILE; 7549 } else if (layouttype == NFSLAYOUT_FLEXFILE) { 7550 /* Disable pNFS. */ 7551 NFSCL_DEBUG(1, "disable PNFS\n"); 7552 nmp->nm_state &= ~(NFSSTA_PNFS | NFSSTA_FLEXFILE); 7553 } 7554 NFSUNLOCKMNT(nmp); 7555 } 7556 if (laystat == 0) { 7557 NFSCL_DEBUG(4, "nfsrpc_layoutgetres at FOREACH\n"); 7558 LIST_FOREACH(tflp, flhp, nfsfl_list) { 7559 laystat = nfscl_adddevinfo(nmp, NULL, tflp); 7560 NFSCL_DEBUG(4, "aft adddev=%d\n", laystat); 7561 if (laystat != 0) { 7562 if (layouttype == NFSLAYOUT_FLEXFILE) 7563 dev = tflp->nfsfl_ffm[0].dev; 7564 else 7565 dev = tflp->nfsfl_dev; 7566 laystat = nfsrpc_getdeviceinfo(nmp, dev, 7567 layouttype, notifybit, &dip, cred, p); 7568 NFSCL_DEBUG(4, "aft nfsrpc_gdi=%d\n", 7569 laystat); 7570 if (laystat != 0) 7571 break; 7572 laystat = nfscl_adddevinfo(nmp, dip, tflp); 7573 if (laystat != 0) 7574 printf("getlayout: cannot add\n"); 7575 } 7576 } 7577 } 7578 if (laystat == 0) { 7579 /* 7580 * nfscl_layout() always returns with the nfsly_lock 7581 * set to a refcnt (shared lock). 7582 * Passing in dvp is sufficient, since it is only used to 7583 * get the fsid for the file system. 7584 */ 7585 laystat = nfscl_layout(nmp, vp, newfhp, newfhlen, stateidp, 7586 layouttype, retonclose, flhp, lypp, cred, p); 7587 NFSCL_DEBUG(4, "nfsrpc_layoutgetres: aft nfscl_layout=%d\n", 7588 laystat); 7589 if (laystat == 0 && islockedp != NULL) 7590 *islockedp = 1; 7591 } 7592 return (laystat); 7593 } 7594 7595