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 #include "opt_inet6.h" 48 49 #include <fs/nfs/nfsport.h> 50 #include <fs/nfsclient/nfs.h> 51 #include <sys/extattr.h> 52 #include <sys/sysctl.h> 53 #include <sys/taskqueue.h> 54 55 SYSCTL_DECL(_vfs_nfs); 56 57 static int nfsignore_eexist = 0; 58 SYSCTL_INT(_vfs_nfs, OID_AUTO, ignore_eexist, CTLFLAG_RW, 59 &nfsignore_eexist, 0, "NFS ignore EEXIST replies for mkdir/symlink"); 60 61 static int nfscl_dssameconn = 0; 62 SYSCTL_INT(_vfs_nfs, OID_AUTO, dssameconn, CTLFLAG_RW, 63 &nfscl_dssameconn, 0, "Use same TCP connection to multiple DSs"); 64 65 /* 66 * Global variables 67 */ 68 extern int nfs_numnfscbd; 69 extern struct timeval nfsboottime; 70 extern u_int32_t newnfs_false, newnfs_true; 71 extern nfstype nfsv34_type[9]; 72 extern int nfsrv_useacl; 73 extern char nfsv4_callbackaddr[INET6_ADDRSTRLEN]; 74 extern int nfscl_debuglevel; 75 extern int nfs_pnfsiothreads; 76 extern u_long sb_max_adj; 77 extern int nfs_maxcopyrange; 78 NFSCLSTATEMUTEX; 79 int nfstest_outofseq = 0; 80 int nfscl_assumeposixlocks = 1; 81 int nfscl_enablecallb = 0; 82 short nfsv4_cbport = NFSV4_CBPORT; 83 int nfstest_openallsetattr = 0; 84 85 #define DIRHDSIZ offsetof(struct dirent, d_name) 86 87 /* 88 * nfscl_getsameserver() can return one of three values: 89 * NFSDSP_USETHISSESSION - Use this session for the DS. 90 * NFSDSP_SEQTHISSESSION - Use the nfsclds_sequence field of this dsp for new 91 * session. 92 * NFSDSP_NOTFOUND - No matching server was found. 93 */ 94 enum nfsclds_state { 95 NFSDSP_USETHISSESSION = 0, 96 NFSDSP_SEQTHISSESSION = 1, 97 NFSDSP_NOTFOUND = 2, 98 }; 99 100 /* 101 * Do a write RPC on a DS data file, using this structure for the arguments, 102 * so that this function can be executed by a separate kernel process. 103 */ 104 struct nfsclwritedsdorpc { 105 int done; 106 int inprog; 107 struct task tsk; 108 struct vnode *vp; 109 int iomode; 110 int must_commit; 111 nfsv4stateid_t *stateidp; 112 struct nfsclds *dsp; 113 uint64_t off; 114 int len; 115 #ifdef notyet 116 int advise; 117 #endif 118 struct nfsfh *fhp; 119 struct mbuf *m; 120 int vers; 121 int minorvers; 122 struct ucred *cred; 123 NFSPROC_T *p; 124 int err; 125 }; 126 127 static int nfsrpc_setattrrpc(vnode_t , struct vattr *, nfsv4stateid_t *, 128 struct ucred *, NFSPROC_T *, struct nfsvattr *, int *, void *); 129 static int nfsrpc_readrpc(vnode_t , struct uio *, struct ucred *, 130 nfsv4stateid_t *, NFSPROC_T *, struct nfsvattr *, int *, void *); 131 static int nfsrpc_writerpc(vnode_t , struct uio *, int *, int *, 132 struct ucred *, nfsv4stateid_t *, NFSPROC_T *, struct nfsvattr *, int *, 133 void *); 134 static int nfsrpc_createv23(vnode_t , char *, int, struct vattr *, 135 nfsquad_t, int, struct ucred *, NFSPROC_T *, struct nfsvattr *, 136 struct nfsvattr *, struct nfsfh **, int *, int *, void *); 137 static int nfsrpc_createv4(vnode_t , char *, int, struct vattr *, 138 nfsquad_t, int, struct nfsclowner *, struct nfscldeleg **, struct ucred *, 139 NFSPROC_T *, struct nfsvattr *, struct nfsvattr *, struct nfsfh **, int *, 140 int *, void *, int *); 141 static int nfsrpc_locku(struct nfsrv_descript *, struct nfsmount *, 142 struct nfscllockowner *, u_int64_t, u_int64_t, 143 u_int32_t, struct ucred *, NFSPROC_T *, int); 144 static int nfsrpc_setaclrpc(vnode_t, struct ucred *, NFSPROC_T *, 145 struct acl *, nfsv4stateid_t *, void *); 146 static int nfsrpc_getlayout(struct nfsmount *, vnode_t, struct nfsfh *, int, 147 uint32_t *, nfsv4stateid_t *, uint64_t, struct nfscllayout **, 148 struct ucred *, NFSPROC_T *); 149 static int nfsrpc_fillsa(struct nfsmount *, struct sockaddr_in *, 150 struct sockaddr_in6 *, sa_family_t, int, int, struct nfsclds **, 151 NFSPROC_T *); 152 static void nfscl_initsessionslots(struct nfsclsession *); 153 static int nfscl_doflayoutio(vnode_t, struct uio *, int *, int *, int *, 154 nfsv4stateid_t *, int, struct nfscldevinfo *, struct nfscllayout *, 155 struct nfsclflayout *, uint64_t, uint64_t, int, struct ucred *, 156 NFSPROC_T *); 157 static int nfscl_dofflayoutio(vnode_t, struct uio *, int *, int *, int *, 158 nfsv4stateid_t *, int, struct nfscldevinfo *, struct nfscllayout *, 159 struct nfsclflayout *, uint64_t, uint64_t, int, int, struct mbuf *, 160 struct nfsclwritedsdorpc *, struct ucred *, NFSPROC_T *); 161 static struct mbuf *nfsm_copym(struct mbuf *, int, int); 162 static int nfsrpc_readds(vnode_t, struct uio *, nfsv4stateid_t *, int *, 163 struct nfsclds *, uint64_t, int, struct nfsfh *, int, int, int, 164 struct ucred *, NFSPROC_T *); 165 static int nfsrpc_writeds(vnode_t, struct uio *, int *, int *, 166 nfsv4stateid_t *, struct nfsclds *, uint64_t, int, 167 struct nfsfh *, int, int, int, int, struct ucred *, NFSPROC_T *); 168 static int nfsio_writedsmir(vnode_t, int *, int *, nfsv4stateid_t *, 169 struct nfsclds *, uint64_t, int, struct nfsfh *, struct mbuf *, int, int, 170 struct nfsclwritedsdorpc *, struct ucred *, NFSPROC_T *); 171 static int nfsrpc_writedsmir(vnode_t, int *, int *, nfsv4stateid_t *, 172 struct nfsclds *, uint64_t, int, struct nfsfh *, struct mbuf *, int, int, 173 struct ucred *, NFSPROC_T *); 174 static enum nfsclds_state nfscl_getsameserver(struct nfsmount *, 175 struct nfsclds *, struct nfsclds **, uint32_t *); 176 static int nfsio_commitds(vnode_t, uint64_t, int, struct nfsclds *, 177 struct nfsfh *, int, int, struct nfsclwritedsdorpc *, struct ucred *, 178 NFSPROC_T *); 179 static int nfsrpc_commitds(vnode_t, uint64_t, int, struct nfsclds *, 180 struct nfsfh *, int, int, struct ucred *, NFSPROC_T *); 181 #ifdef notyet 182 static int nfsio_adviseds(vnode_t, uint64_t, int, int, struct nfsclds *, 183 struct nfsfh *, int, int, struct nfsclwritedsdorpc *, struct ucred *, 184 NFSPROC_T *); 185 static int nfsrpc_adviseds(vnode_t, uint64_t, int, int, struct nfsclds *, 186 struct nfsfh *, int, int, struct ucred *, NFSPROC_T *); 187 #endif 188 static int nfsrpc_allocaterpc(vnode_t, off_t, off_t, nfsv4stateid_t *, 189 struct nfsvattr *, int *, struct ucred *, NFSPROC_T *, void *); 190 static void nfsrv_setuplayoutget(struct nfsrv_descript *, int, uint64_t, 191 uint64_t, uint64_t, nfsv4stateid_t *, int, int, int); 192 static int nfsrv_parseug(struct nfsrv_descript *, int, uid_t *, gid_t *, 193 NFSPROC_T *); 194 static int nfsrv_parselayoutget(struct nfsmount *, struct nfsrv_descript *, 195 nfsv4stateid_t *, int *, struct nfsclflayouthead *); 196 static int nfsrpc_getopenlayout(struct nfsmount *, vnode_t, u_int8_t *, 197 int, uint8_t *, int, uint32_t, struct nfsclopen *, uint8_t *, int, 198 struct nfscldeleg **, struct ucred *, NFSPROC_T *); 199 static int nfsrpc_getcreatelayout(vnode_t, char *, int, struct vattr *, 200 nfsquad_t, int, struct nfsclowner *, struct nfscldeleg **, 201 struct ucred *, NFSPROC_T *, struct nfsvattr *, struct nfsvattr *, 202 struct nfsfh **, int *, int *, void *, int *); 203 static int nfsrpc_openlayoutrpc(struct nfsmount *, vnode_t, u_int8_t *, 204 int, uint8_t *, int, uint32_t, struct nfsclopen *, uint8_t *, int, 205 struct nfscldeleg **, nfsv4stateid_t *, int, int, int, int *, 206 struct nfsclflayouthead *, int *, struct ucred *, NFSPROC_T *); 207 static int nfsrpc_createlayout(vnode_t, char *, int, struct vattr *, 208 nfsquad_t, int, struct nfsclowner *, struct nfscldeleg **, 209 struct ucred *, NFSPROC_T *, struct nfsvattr *, struct nfsvattr *, 210 struct nfsfh **, int *, int *, void *, int *, nfsv4stateid_t *, 211 int, int, int, int *, struct nfsclflayouthead *, int *); 212 static int nfsrpc_layoutget(struct nfsmount *, uint8_t *, int, int, uint64_t, 213 uint64_t, uint64_t, int, int, nfsv4stateid_t *, int *, 214 struct nfsclflayouthead *, struct ucred *, NFSPROC_T *, void *); 215 static int nfsrpc_layoutgetres(struct nfsmount *, vnode_t, uint8_t *, 216 int, nfsv4stateid_t *, int, uint32_t *, struct nfscllayout **, 217 struct nfsclflayouthead *, int, int, int *, struct ucred *, NFSPROC_T *); 218 static int nfsrpc_copyrpc(vnode_t, off_t, vnode_t, off_t, size_t *, 219 nfsv4stateid_t *, nfsv4stateid_t *, struct nfsvattr *, int *, 220 struct nfsvattr *, int *, bool, int *, struct ucred *, NFSPROC_T *); 221 static int nfsrpc_seekrpc(vnode_t, off_t *, nfsv4stateid_t *, bool *, 222 int, struct nfsvattr *, int *, struct ucred *); 223 224 int nfs_pnfsio(task_fn_t *, void *); 225 226 /* 227 * nfs null call from vfs. 228 */ 229 int 230 nfsrpc_null(vnode_t vp, struct ucred *cred, NFSPROC_T *p) 231 { 232 int error; 233 struct nfsrv_descript nfsd, *nd = &nfsd; 234 235 NFSCL_REQSTART(nd, NFSPROC_NULL, vp); 236 error = nfscl_request(nd, vp, p, cred, NULL); 237 if (nd->nd_repstat && !error) 238 error = nd->nd_repstat; 239 m_freem(nd->nd_mrep); 240 return (error); 241 } 242 243 /* 244 * nfs access rpc op. 245 * For nfs version 3 and 4, use the access rpc to check accessibility. If file 246 * modes are changed on the server, accesses might still fail later. 247 */ 248 int 249 nfsrpc_access(vnode_t vp, int acmode, struct ucred *cred, 250 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp) 251 { 252 int error; 253 u_int32_t mode, rmode; 254 255 if (acmode & VREAD) 256 mode = NFSACCESS_READ; 257 else 258 mode = 0; 259 if (vnode_vtype(vp) == VDIR) { 260 if (acmode & VWRITE) 261 mode |= (NFSACCESS_MODIFY | NFSACCESS_EXTEND | 262 NFSACCESS_DELETE); 263 if (acmode & VEXEC) 264 mode |= NFSACCESS_LOOKUP; 265 } else { 266 if (acmode & VWRITE) 267 mode |= (NFSACCESS_MODIFY | NFSACCESS_EXTEND); 268 if (acmode & VEXEC) 269 mode |= NFSACCESS_EXECUTE; 270 } 271 272 /* 273 * Now, just call nfsrpc_accessrpc() to do the actual RPC. 274 */ 275 error = nfsrpc_accessrpc(vp, mode, cred, p, nap, attrflagp, &rmode, 276 NULL); 277 278 /* 279 * The NFS V3 spec does not clarify whether or not 280 * the returned access bits can be a superset of 281 * the ones requested, so... 282 */ 283 if (!error && (rmode & mode) != mode) 284 error = EACCES; 285 return (error); 286 } 287 288 /* 289 * The actual rpc, separated out for Darwin. 290 */ 291 int 292 nfsrpc_accessrpc(vnode_t vp, u_int32_t mode, struct ucred *cred, 293 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, u_int32_t *rmodep, 294 void *stuff) 295 { 296 u_int32_t *tl; 297 u_int32_t supported, rmode; 298 int error; 299 struct nfsrv_descript nfsd, *nd = &nfsd; 300 nfsattrbit_t attrbits; 301 302 *attrflagp = 0; 303 supported = mode; 304 NFSCL_REQSTART(nd, NFSPROC_ACCESS, vp); 305 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 306 *tl = txdr_unsigned(mode); 307 if (nd->nd_flag & ND_NFSV4) { 308 /* 309 * And do a Getattr op. 310 */ 311 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 312 *tl = txdr_unsigned(NFSV4OP_GETATTR); 313 NFSGETATTR_ATTRBIT(&attrbits); 314 (void) nfsrv_putattrbit(nd, &attrbits); 315 } 316 error = nfscl_request(nd, vp, p, cred, stuff); 317 if (error) 318 return (error); 319 if (nd->nd_flag & ND_NFSV3) { 320 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 321 if (error) 322 goto nfsmout; 323 } 324 if (!nd->nd_repstat) { 325 if (nd->nd_flag & ND_NFSV4) { 326 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 327 supported = fxdr_unsigned(u_int32_t, *tl++); 328 } else { 329 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 330 } 331 rmode = fxdr_unsigned(u_int32_t, *tl); 332 if (nd->nd_flag & ND_NFSV4) 333 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 334 335 /* 336 * It's not obvious what should be done about 337 * unsupported access modes. For now, be paranoid 338 * and clear the unsupported ones. 339 */ 340 rmode &= supported; 341 *rmodep = rmode; 342 } else 343 error = nd->nd_repstat; 344 nfsmout: 345 m_freem(nd->nd_mrep); 346 return (error); 347 } 348 349 /* 350 * nfs open rpc 351 */ 352 int 353 nfsrpc_open(vnode_t vp, int amode, struct ucred *cred, NFSPROC_T *p) 354 { 355 struct nfsclopen *op; 356 struct nfscldeleg *dp; 357 struct nfsfh *nfhp; 358 struct nfsnode *np = VTONFS(vp); 359 struct nfsmount *nmp = VFSTONFS(vp->v_mount); 360 u_int32_t mode, clidrev; 361 int ret, newone, error, expireret = 0, retrycnt; 362 363 /* 364 * For NFSv4, Open Ops are only done on Regular Files. 365 */ 366 if (vnode_vtype(vp) != VREG) 367 return (0); 368 mode = 0; 369 if (amode & FREAD) 370 mode |= NFSV4OPEN_ACCESSREAD; 371 if (amode & FWRITE) 372 mode |= NFSV4OPEN_ACCESSWRITE; 373 nfhp = np->n_fhp; 374 375 retrycnt = 0; 376 #ifdef notdef 377 { char name[100]; int namel; 378 namel = (np->n_v4->n4_namelen < 100) ? np->n_v4->n4_namelen : 99; 379 bcopy(NFS4NODENAME(np->n_v4), name, namel); 380 name[namel] = '\0'; 381 printf("rpcopen p=0x%x name=%s",p->p_pid,name); 382 if (nfhp->nfh_len > 0) printf(" fh=0x%x\n",nfhp->nfh_fh[12]); 383 else printf(" fhl=0\n"); 384 } 385 #endif 386 do { 387 dp = NULL; 388 error = nfscl_open(vp, nfhp->nfh_fh, nfhp->nfh_len, mode, 1, 389 cred, p, NULL, &op, &newone, &ret, 1); 390 if (error) { 391 return (error); 392 } 393 if (nmp->nm_clp != NULL) 394 clidrev = nmp->nm_clp->nfsc_clientidrev; 395 else 396 clidrev = 0; 397 if (ret == NFSCLOPEN_DOOPEN) { 398 if (np->n_v4 != NULL) { 399 /* 400 * For the first attempt, try and get a layout, if 401 * pNFS is enabled for the mount. 402 */ 403 if (!NFSHASPNFS(nmp) || nfscl_enablecallb == 0 || 404 nfs_numnfscbd == 0 || 405 (np->n_flag & NNOLAYOUT) != 0 || retrycnt > 0) 406 error = nfsrpc_openrpc(nmp, vp, 407 np->n_v4->n4_data, 408 np->n_v4->n4_fhlen, np->n_fhp->nfh_fh, 409 np->n_fhp->nfh_len, mode, op, 410 NFS4NODENAME(np->n_v4), 411 np->n_v4->n4_namelen, 412 &dp, 0, 0x0, cred, p, 0, 0); 413 else 414 error = nfsrpc_getopenlayout(nmp, vp, 415 np->n_v4->n4_data, 416 np->n_v4->n4_fhlen, np->n_fhp->nfh_fh, 417 np->n_fhp->nfh_len, mode, op, 418 NFS4NODENAME(np->n_v4), 419 np->n_v4->n4_namelen, &dp, cred, p); 420 if (dp != NULL) { 421 #ifdef APPLE 422 OSBitAndAtomic((int32_t)~NDELEGMOD, (UInt32 *)&np->n_flag); 423 #else 424 NFSLOCKNODE(np); 425 np->n_flag &= ~NDELEGMOD; 426 /* 427 * Invalidate the attribute cache, so that 428 * attributes that pre-date the issue of a 429 * delegation are not cached, since the 430 * cached attributes will remain valid while 431 * the delegation is held. 432 */ 433 NFSINVALATTRCACHE(np); 434 NFSUNLOCKNODE(np); 435 #endif 436 (void) nfscl_deleg(nmp->nm_mountp, 437 op->nfso_own->nfsow_clp, 438 nfhp->nfh_fh, nfhp->nfh_len, cred, p, &dp); 439 } 440 } else { 441 error = EIO; 442 } 443 newnfs_copyincred(cred, &op->nfso_cred); 444 } else if (ret == NFSCLOPEN_SETCRED) 445 /* 446 * This is a new local open on a delegation. It needs 447 * to have credentials so that an open can be done 448 * against the server during recovery. 449 */ 450 newnfs_copyincred(cred, &op->nfso_cred); 451 452 /* 453 * nfso_opencnt is the count of how many VOP_OPEN()s have 454 * been done on this Open successfully and a VOP_CLOSE() 455 * is expected for each of these. 456 * If error is non-zero, don't increment it, since the Open 457 * hasn't succeeded yet. 458 */ 459 if (!error) 460 op->nfso_opencnt++; 461 nfscl_openrelease(nmp, op, error, newone); 462 if (error == NFSERR_GRACE || error == NFSERR_STALECLIENTID || 463 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 464 error == NFSERR_BADSESSION) { 465 (void) nfs_catnap(PZERO, error, "nfs_open"); 466 } else if ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) 467 && clidrev != 0) { 468 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p); 469 retrycnt++; 470 } 471 } while (error == NFSERR_GRACE || error == NFSERR_STALECLIENTID || 472 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 473 error == NFSERR_BADSESSION || 474 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) && 475 expireret == 0 && clidrev != 0 && retrycnt < 4)); 476 if (error && retrycnt >= 4) 477 error = EIO; 478 return (error); 479 } 480 481 /* 482 * the actual open rpc 483 */ 484 int 485 nfsrpc_openrpc(struct nfsmount *nmp, vnode_t vp, u_int8_t *nfhp, int fhlen, 486 u_int8_t *newfhp, int newfhlen, u_int32_t mode, struct nfsclopen *op, 487 u_int8_t *name, int namelen, struct nfscldeleg **dpp, 488 int reclaim, u_int32_t delegtype, struct ucred *cred, NFSPROC_T *p, 489 int syscred, int recursed) 490 { 491 u_int32_t *tl; 492 struct nfsrv_descript nfsd, *nd = &nfsd; 493 struct nfscldeleg *dp, *ndp = NULL; 494 struct nfsvattr nfsva; 495 u_int32_t rflags, deleg; 496 nfsattrbit_t attrbits; 497 int error, ret, acesize, limitby; 498 struct nfsclsession *tsep; 499 500 dp = *dpp; 501 *dpp = NULL; 502 nfscl_reqstart(nd, NFSPROC_OPEN, nmp, nfhp, fhlen, NULL, NULL, 0, 0, 503 false); 504 NFSM_BUILD(tl, u_int32_t *, 5 * NFSX_UNSIGNED); 505 *tl++ = txdr_unsigned(op->nfso_own->nfsow_seqid); 506 *tl++ = txdr_unsigned(mode & NFSV4OPEN_ACCESSBOTH); 507 *tl++ = txdr_unsigned((mode >> NFSLCK_SHIFT) & NFSV4OPEN_DENYBOTH); 508 tsep = nfsmnt_mdssession(nmp); 509 *tl++ = tsep->nfsess_clientid.lval[0]; 510 *tl = tsep->nfsess_clientid.lval[1]; 511 (void) nfsm_strtom(nd, op->nfso_own->nfsow_owner, NFSV4CL_LOCKNAMELEN); 512 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 513 *tl++ = txdr_unsigned(NFSV4OPEN_NOCREATE); 514 if (reclaim) { 515 *tl = txdr_unsigned(NFSV4OPEN_CLAIMPREVIOUS); 516 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 517 *tl = txdr_unsigned(delegtype); 518 } else { 519 if (dp != NULL) { 520 *tl = txdr_unsigned(NFSV4OPEN_CLAIMDELEGATECUR); 521 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID); 522 if (NFSHASNFSV4N(nmp)) 523 *tl++ = 0; 524 else 525 *tl++ = dp->nfsdl_stateid.seqid; 526 *tl++ = dp->nfsdl_stateid.other[0]; 527 *tl++ = dp->nfsdl_stateid.other[1]; 528 *tl = dp->nfsdl_stateid.other[2]; 529 } else { 530 *tl = txdr_unsigned(NFSV4OPEN_CLAIMNULL); 531 } 532 (void) nfsm_strtom(nd, name, namelen); 533 } 534 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 535 *tl = txdr_unsigned(NFSV4OP_GETATTR); 536 NFSZERO_ATTRBIT(&attrbits); 537 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_CHANGE); 538 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_TIMEMODIFY); 539 (void) nfsrv_putattrbit(nd, &attrbits); 540 if (syscred) 541 nd->nd_flag |= ND_USEGSSNAME; 542 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, vp, p, cred, 543 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 544 if (error) 545 return (error); 546 NFSCL_INCRSEQID(op->nfso_own->nfsow_seqid, nd); 547 if (!nd->nd_repstat) { 548 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID + 549 6 * NFSX_UNSIGNED); 550 op->nfso_stateid.seqid = *tl++; 551 op->nfso_stateid.other[0] = *tl++; 552 op->nfso_stateid.other[1] = *tl++; 553 op->nfso_stateid.other[2] = *tl; 554 rflags = fxdr_unsigned(u_int32_t, *(tl + 6)); 555 error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL); 556 if (error) 557 goto nfsmout; 558 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 559 deleg = fxdr_unsigned(u_int32_t, *tl); 560 if (deleg == NFSV4OPEN_DELEGATEREAD || 561 deleg == NFSV4OPEN_DELEGATEWRITE) { 562 if (!(op->nfso_own->nfsow_clp->nfsc_flags & 563 NFSCLFLAGS_FIRSTDELEG)) 564 op->nfso_own->nfsow_clp->nfsc_flags |= 565 (NFSCLFLAGS_FIRSTDELEG | NFSCLFLAGS_GOTDELEG); 566 ndp = malloc( 567 sizeof (struct nfscldeleg) + newfhlen, 568 M_NFSCLDELEG, M_WAITOK); 569 LIST_INIT(&ndp->nfsdl_owner); 570 LIST_INIT(&ndp->nfsdl_lock); 571 ndp->nfsdl_clp = op->nfso_own->nfsow_clp; 572 ndp->nfsdl_fhlen = newfhlen; 573 NFSBCOPY(newfhp, ndp->nfsdl_fh, newfhlen); 574 newnfs_copyincred(cred, &ndp->nfsdl_cred); 575 nfscl_lockinit(&ndp->nfsdl_rwlock); 576 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID + 577 NFSX_UNSIGNED); 578 ndp->nfsdl_stateid.seqid = *tl++; 579 ndp->nfsdl_stateid.other[0] = *tl++; 580 ndp->nfsdl_stateid.other[1] = *tl++; 581 ndp->nfsdl_stateid.other[2] = *tl++; 582 ret = fxdr_unsigned(int, *tl); 583 if (deleg == NFSV4OPEN_DELEGATEWRITE) { 584 ndp->nfsdl_flags = NFSCLDL_WRITE; 585 /* 586 * Indicates how much the file can grow. 587 */ 588 NFSM_DISSECT(tl, u_int32_t *, 589 3 * NFSX_UNSIGNED); 590 limitby = fxdr_unsigned(int, *tl++); 591 switch (limitby) { 592 case NFSV4OPEN_LIMITSIZE: 593 ndp->nfsdl_sizelimit = fxdr_hyper(tl); 594 break; 595 case NFSV4OPEN_LIMITBLOCKS: 596 ndp->nfsdl_sizelimit = 597 fxdr_unsigned(u_int64_t, *tl++); 598 ndp->nfsdl_sizelimit *= 599 fxdr_unsigned(u_int64_t, *tl); 600 break; 601 default: 602 error = NFSERR_BADXDR; 603 goto nfsmout; 604 } 605 } else { 606 ndp->nfsdl_flags = NFSCLDL_READ; 607 } 608 if (ret) 609 ndp->nfsdl_flags |= NFSCLDL_RECALL; 610 error = nfsrv_dissectace(nd, &ndp->nfsdl_ace, &ret, 611 &acesize, p); 612 if (error) 613 goto nfsmout; 614 } else if (deleg != NFSV4OPEN_DELEGATENONE) { 615 error = NFSERR_BADXDR; 616 goto nfsmout; 617 } 618 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 619 error = nfsv4_loadattr(nd, NULL, &nfsva, NULL, 620 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0, 621 NULL, NULL, NULL, p, cred); 622 if (error) 623 goto nfsmout; 624 if (ndp != NULL) { 625 ndp->nfsdl_change = nfsva.na_filerev; 626 ndp->nfsdl_modtime = nfsva.na_mtime; 627 ndp->nfsdl_flags |= NFSCLDL_MODTIMESET; 628 } 629 if (!reclaim && (rflags & NFSV4OPEN_RESULTCONFIRM)) { 630 do { 631 ret = nfsrpc_openconfirm(vp, newfhp, newfhlen, op, 632 cred, p); 633 if (ret == NFSERR_DELAY) 634 (void) nfs_catnap(PZERO, ret, "nfs_open"); 635 } while (ret == NFSERR_DELAY); 636 error = ret; 637 } 638 if ((rflags & NFSV4OPEN_LOCKTYPEPOSIX) || 639 nfscl_assumeposixlocks) 640 op->nfso_posixlock = 1; 641 else 642 op->nfso_posixlock = 0; 643 644 /* 645 * If the server is handing out delegations, but we didn't 646 * get one because an OpenConfirm was required, try the 647 * Open again, to get a delegation. This is a harmless no-op, 648 * from a server's point of view. 649 */ 650 if (!reclaim && (rflags & NFSV4OPEN_RESULTCONFIRM) && 651 (op->nfso_own->nfsow_clp->nfsc_flags & NFSCLFLAGS_GOTDELEG) 652 && !error && dp == NULL && ndp == NULL && !recursed) { 653 do { 654 ret = nfsrpc_openrpc(nmp, vp, nfhp, fhlen, newfhp, 655 newfhlen, mode, op, name, namelen, &ndp, 0, 0x0, 656 cred, p, syscred, 1); 657 if (ret == NFSERR_DELAY) 658 (void) nfs_catnap(PZERO, ret, "nfs_open2"); 659 } while (ret == NFSERR_DELAY); 660 if (ret) { 661 if (ndp != NULL) { 662 free(ndp, M_NFSCLDELEG); 663 ndp = NULL; 664 } 665 if (ret == NFSERR_STALECLIENTID || 666 ret == NFSERR_STALEDONTRECOVER || 667 ret == NFSERR_BADSESSION) 668 error = ret; 669 } 670 } 671 } 672 if (nd->nd_repstat != 0 && error == 0) 673 error = nd->nd_repstat; 674 if (error == NFSERR_STALECLIENTID) 675 nfscl_initiate_recovery(op->nfso_own->nfsow_clp); 676 nfsmout: 677 if (!error) 678 *dpp = ndp; 679 else if (ndp != NULL) 680 free(ndp, M_NFSCLDELEG); 681 m_freem(nd->nd_mrep); 682 return (error); 683 } 684 685 /* 686 * open downgrade rpc 687 */ 688 int 689 nfsrpc_opendowngrade(vnode_t vp, u_int32_t mode, struct nfsclopen *op, 690 struct ucred *cred, NFSPROC_T *p) 691 { 692 u_int32_t *tl; 693 struct nfsrv_descript nfsd, *nd = &nfsd; 694 int error; 695 696 NFSCL_REQSTART(nd, NFSPROC_OPENDOWNGRADE, vp); 697 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID + 3 * NFSX_UNSIGNED); 698 if (NFSHASNFSV4N(VFSTONFS(vp->v_mount))) 699 *tl++ = 0; 700 else 701 *tl++ = op->nfso_stateid.seqid; 702 *tl++ = op->nfso_stateid.other[0]; 703 *tl++ = op->nfso_stateid.other[1]; 704 *tl++ = op->nfso_stateid.other[2]; 705 *tl++ = txdr_unsigned(op->nfso_own->nfsow_seqid); 706 *tl++ = txdr_unsigned(mode & NFSV4OPEN_ACCESSBOTH); 707 *tl = txdr_unsigned((mode >> NFSLCK_SHIFT) & NFSV4OPEN_DENYBOTH); 708 error = nfscl_request(nd, vp, p, cred, NULL); 709 if (error) 710 return (error); 711 NFSCL_INCRSEQID(op->nfso_own->nfsow_seqid, nd); 712 if (!nd->nd_repstat) { 713 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID); 714 op->nfso_stateid.seqid = *tl++; 715 op->nfso_stateid.other[0] = *tl++; 716 op->nfso_stateid.other[1] = *tl++; 717 op->nfso_stateid.other[2] = *tl; 718 } 719 if (nd->nd_repstat && error == 0) 720 error = nd->nd_repstat; 721 if (error == NFSERR_STALESTATEID) 722 nfscl_initiate_recovery(op->nfso_own->nfsow_clp); 723 nfsmout: 724 m_freem(nd->nd_mrep); 725 return (error); 726 } 727 728 /* 729 * V4 Close operation. 730 */ 731 int 732 nfsrpc_close(vnode_t vp, int doclose, NFSPROC_T *p) 733 { 734 struct nfsclclient *clp; 735 int error; 736 737 if (vnode_vtype(vp) != VREG) 738 return (0); 739 if (doclose) 740 error = nfscl_doclose(vp, &clp, p); 741 else 742 error = nfscl_getclose(vp, &clp); 743 if (error) 744 return (error); 745 746 nfscl_clientrelease(clp); 747 return (0); 748 } 749 750 /* 751 * Close the open. 752 */ 753 void 754 nfsrpc_doclose(struct nfsmount *nmp, struct nfsclopen *op, NFSPROC_T *p) 755 { 756 struct nfsrv_descript nfsd, *nd = &nfsd; 757 struct nfscllockowner *lp, *nlp; 758 struct nfscllock *lop, *nlop; 759 struct ucred *tcred; 760 u_int64_t off = 0, len = 0; 761 u_int32_t type = NFSV4LOCKT_READ; 762 int error, do_unlock, trycnt; 763 764 tcred = newnfs_getcred(); 765 newnfs_copycred(&op->nfso_cred, tcred); 766 /* 767 * (Theoretically this could be done in the same 768 * compound as the close, but having multiple 769 * sequenced Ops in the same compound might be 770 * too scary for some servers.) 771 */ 772 if (op->nfso_posixlock) { 773 off = 0; 774 len = NFS64BITSSET; 775 type = NFSV4LOCKT_READ; 776 } 777 778 /* 779 * Since this function is only called from VOP_INACTIVE(), no 780 * other thread will be manipulating this Open. As such, the 781 * lock lists are not being changed by other threads, so it should 782 * be safe to do this without locking. 783 */ 784 LIST_FOREACH(lp, &op->nfso_lock, nfsl_list) { 785 do_unlock = 1; 786 LIST_FOREACH_SAFE(lop, &lp->nfsl_lock, nfslo_list, nlop) { 787 if (op->nfso_posixlock == 0) { 788 off = lop->nfslo_first; 789 len = lop->nfslo_end - lop->nfslo_first; 790 if (lop->nfslo_type == F_WRLCK) 791 type = NFSV4LOCKT_WRITE; 792 else 793 type = NFSV4LOCKT_READ; 794 } 795 if (do_unlock) { 796 trycnt = 0; 797 do { 798 error = nfsrpc_locku(nd, nmp, lp, off, 799 len, type, tcred, p, 0); 800 if ((nd->nd_repstat == NFSERR_GRACE || 801 nd->nd_repstat == NFSERR_DELAY) && 802 error == 0) 803 (void) nfs_catnap(PZERO, 804 (int)nd->nd_repstat, 805 "nfs_close"); 806 } while ((nd->nd_repstat == NFSERR_GRACE || 807 nd->nd_repstat == NFSERR_DELAY) && 808 error == 0 && trycnt++ < 5); 809 if (op->nfso_posixlock) 810 do_unlock = 0; 811 } 812 nfscl_freelock(lop, 0); 813 } 814 /* 815 * Do a ReleaseLockOwner. 816 * The lock owner name nfsl_owner may be used by other opens for 817 * other files but the lock_owner4 name that nfsrpc_rellockown() 818 * puts on the wire has the file handle for this file appended 819 * to it, so it can be done now. 820 */ 821 (void)nfsrpc_rellockown(nmp, lp, lp->nfsl_open->nfso_fh, 822 lp->nfsl_open->nfso_fhlen, tcred, p); 823 } 824 825 /* 826 * There could be other Opens for different files on the same 827 * OpenOwner, so locking is required. 828 */ 829 NFSLOCKCLSTATE(); 830 nfscl_lockexcl(&op->nfso_own->nfsow_rwlock, NFSCLSTATEMUTEXPTR); 831 NFSUNLOCKCLSTATE(); 832 do { 833 error = nfscl_tryclose(op, tcred, nmp, p); 834 if (error == NFSERR_GRACE) 835 (void) nfs_catnap(PZERO, error, "nfs_close"); 836 } while (error == NFSERR_GRACE); 837 NFSLOCKCLSTATE(); 838 nfscl_lockunlock(&op->nfso_own->nfsow_rwlock); 839 840 LIST_FOREACH_SAFE(lp, &op->nfso_lock, nfsl_list, nlp) 841 nfscl_freelockowner(lp, 0); 842 nfscl_freeopen(op, 0); 843 NFSUNLOCKCLSTATE(); 844 NFSFREECRED(tcred); 845 } 846 847 /* 848 * The actual Close RPC. 849 */ 850 int 851 nfsrpc_closerpc(struct nfsrv_descript *nd, struct nfsmount *nmp, 852 struct nfsclopen *op, struct ucred *cred, NFSPROC_T *p, 853 int syscred) 854 { 855 u_int32_t *tl; 856 int error; 857 858 nfscl_reqstart(nd, NFSPROC_CLOSE, nmp, op->nfso_fh, 859 op->nfso_fhlen, NULL, NULL, 0, 0, false); 860 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED + NFSX_STATEID); 861 *tl++ = txdr_unsigned(op->nfso_own->nfsow_seqid); 862 if (NFSHASNFSV4N(nmp)) 863 *tl++ = 0; 864 else 865 *tl++ = op->nfso_stateid.seqid; 866 *tl++ = op->nfso_stateid.other[0]; 867 *tl++ = op->nfso_stateid.other[1]; 868 *tl = op->nfso_stateid.other[2]; 869 if (syscred) 870 nd->nd_flag |= ND_USEGSSNAME; 871 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 872 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 873 if (error) 874 return (error); 875 NFSCL_INCRSEQID(op->nfso_own->nfsow_seqid, nd); 876 if (nd->nd_repstat == 0) 877 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID); 878 error = nd->nd_repstat; 879 if (error == NFSERR_STALESTATEID) 880 nfscl_initiate_recovery(op->nfso_own->nfsow_clp); 881 nfsmout: 882 m_freem(nd->nd_mrep); 883 return (error); 884 } 885 886 /* 887 * V4 Open Confirm RPC. 888 */ 889 int 890 nfsrpc_openconfirm(vnode_t vp, u_int8_t *nfhp, int fhlen, 891 struct nfsclopen *op, struct ucred *cred, NFSPROC_T *p) 892 { 893 u_int32_t *tl; 894 struct nfsrv_descript nfsd, *nd = &nfsd; 895 struct nfsmount *nmp; 896 int error; 897 898 nmp = VFSTONFS(vp->v_mount); 899 if (NFSHASNFSV4N(nmp)) 900 return (0); /* No confirmation for NFSv4.1. */ 901 nfscl_reqstart(nd, NFSPROC_OPENCONFIRM, nmp, nfhp, fhlen, NULL, NULL, 902 0, 0, false); 903 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED + NFSX_STATEID); 904 *tl++ = op->nfso_stateid.seqid; 905 *tl++ = op->nfso_stateid.other[0]; 906 *tl++ = op->nfso_stateid.other[1]; 907 *tl++ = op->nfso_stateid.other[2]; 908 *tl = txdr_unsigned(op->nfso_own->nfsow_seqid); 909 error = nfscl_request(nd, vp, p, cred, NULL); 910 if (error) 911 return (error); 912 NFSCL_INCRSEQID(op->nfso_own->nfsow_seqid, nd); 913 if (!nd->nd_repstat) { 914 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID); 915 op->nfso_stateid.seqid = *tl++; 916 op->nfso_stateid.other[0] = *tl++; 917 op->nfso_stateid.other[1] = *tl++; 918 op->nfso_stateid.other[2] = *tl; 919 } 920 error = nd->nd_repstat; 921 if (error == NFSERR_STALESTATEID) 922 nfscl_initiate_recovery(op->nfso_own->nfsow_clp); 923 nfsmout: 924 m_freem(nd->nd_mrep); 925 return (error); 926 } 927 928 /* 929 * Do the setclientid and setclientid confirm RPCs. Called from nfs_statfs() 930 * when a mount has just occurred and when the server replies NFSERR_EXPIRED. 931 */ 932 int 933 nfsrpc_setclient(struct nfsmount *nmp, struct nfsclclient *clp, int reclaim, 934 bool *retokp, struct ucred *cred, NFSPROC_T *p) 935 { 936 u_int32_t *tl; 937 struct nfsrv_descript nfsd; 938 struct nfsrv_descript *nd = &nfsd; 939 nfsattrbit_t attrbits; 940 u_int8_t *cp = NULL, *cp2, addr[INET6_ADDRSTRLEN + 9]; 941 u_short port; 942 int error, isinet6 = 0, callblen; 943 nfsquad_t confirm; 944 u_int32_t lease; 945 static u_int32_t rev = 0; 946 struct nfsclds *dsp, *odsp; 947 struct in6_addr a6; 948 struct nfsclsession *tsep; 949 950 if (nfsboottime.tv_sec == 0) 951 NFSSETBOOTTIME(nfsboottime); 952 if (NFSHASNFSV4N(nmp)) { 953 error = NFSERR_BADSESSION; 954 odsp = dsp = NULL; 955 if (retokp != NULL) { 956 NFSLOCKMNT(nmp); 957 odsp = TAILQ_FIRST(&nmp->nm_sess); 958 NFSUNLOCKMNT(nmp); 959 } 960 if (odsp != NULL) { 961 /* 962 * When a session already exists, first try a 963 * CreateSession with the extant ClientID. 964 */ 965 dsp = malloc(sizeof(struct nfsclds) + 966 odsp->nfsclds_servownlen + 1, M_NFSCLDS, 967 M_WAITOK | M_ZERO); 968 dsp->nfsclds_expire = NFSD_MONOSEC + clp->nfsc_renew; 969 dsp->nfsclds_servownlen = odsp->nfsclds_servownlen; 970 dsp->nfsclds_sess.nfsess_clientid = 971 odsp->nfsclds_sess.nfsess_clientid; 972 dsp->nfsclds_sess.nfsess_sequenceid = 973 odsp->nfsclds_sess.nfsess_sequenceid; 974 dsp->nfsclds_flags = odsp->nfsclds_flags; 975 if (dsp->nfsclds_servownlen > 0) 976 memcpy(dsp->nfsclds_serverown, 977 odsp->nfsclds_serverown, 978 dsp->nfsclds_servownlen + 1); 979 mtx_init(&dsp->nfsclds_mtx, "nfsds", NULL, MTX_DEF); 980 mtx_init(&dsp->nfsclds_sess.nfsess_mtx, "nfssession", 981 NULL, MTX_DEF); 982 nfscl_initsessionslots(&dsp->nfsclds_sess); 983 error = nfsrpc_createsession(nmp, &dsp->nfsclds_sess, 984 &nmp->nm_sockreq, NULL, 985 dsp->nfsclds_sess.nfsess_sequenceid, 1, cred, p); 986 NFSCL_DEBUG(1, "create session for extant " 987 "ClientID=%d\n", error); 988 if (error != 0) { 989 nfscl_freenfsclds(dsp); 990 dsp = NULL; 991 /* 992 * If *retokp is true, return any error other 993 * than NFSERR_STALECLIENTID, 994 * NFSERR_BADSESSION or NFSERR_STALEDONTRECOVER 995 * so that nfscl_recover() will not loop. 996 */ 997 if (*retokp) 998 return (NFSERR_IO); 999 } else 1000 *retokp = true; 1001 } else if (retokp != NULL && *retokp) 1002 return (NFSERR_IO); 1003 if (error != 0) { 1004 /* 1005 * Either there was no previous session or the 1006 * CreateSession attempt failed, so... 1007 * do an ExchangeID followed by the CreateSession. 1008 */ 1009 clp->nfsc_rev = rev++; 1010 error = nfsrpc_exchangeid(nmp, clp, &nmp->nm_sockreq, 0, 1011 NFSV4EXCH_USEPNFSMDS | NFSV4EXCH_USENONPNFS, &dsp, 1012 cred, p); 1013 NFSCL_DEBUG(1, "aft exch=%d\n", error); 1014 if (error == 0) 1015 error = nfsrpc_createsession(nmp, 1016 &dsp->nfsclds_sess, &nmp->nm_sockreq, NULL, 1017 dsp->nfsclds_sess.nfsess_sequenceid, 1, 1018 cred, p); 1019 NFSCL_DEBUG(1, "aft createsess=%d\n", error); 1020 } 1021 if (error == 0) { 1022 NFSLOCKMNT(nmp); 1023 /* 1024 * The old sessions cannot be safely free'd 1025 * here, since they may still be used by 1026 * in-progress RPCs. 1027 */ 1028 tsep = NULL; 1029 if (TAILQ_FIRST(&nmp->nm_sess) != NULL) 1030 tsep = NFSMNT_MDSSESSION(nmp); 1031 TAILQ_INSERT_HEAD(&nmp->nm_sess, dsp, 1032 nfsclds_list); 1033 /* 1034 * Wake up RPCs waiting for a slot on the 1035 * old session. These will then fail with 1036 * NFSERR_BADSESSION and be retried with the 1037 * new session by nfsv4_setsequence(). 1038 * Also wakeup() processes waiting for the 1039 * new session. 1040 */ 1041 if (tsep != NULL) 1042 wakeup(&tsep->nfsess_slots); 1043 wakeup(&nmp->nm_sess); 1044 NFSUNLOCKMNT(nmp); 1045 } else if (dsp != NULL) 1046 nfscl_freenfsclds(dsp); 1047 if (error == 0 && reclaim == 0) { 1048 error = nfsrpc_reclaimcomplete(nmp, cred, p); 1049 NFSCL_DEBUG(1, "aft reclaimcomp=%d\n", error); 1050 if (error == NFSERR_COMPLETEALREADY || 1051 error == NFSERR_NOTSUPP) 1052 /* Ignore this error. */ 1053 error = 0; 1054 } 1055 return (error); 1056 } else if (retokp != NULL && *retokp) 1057 return (NFSERR_IO); 1058 clp->nfsc_rev = rev++; 1059 1060 /* 1061 * Allocate a single session structure for NFSv4.0, because some of 1062 * the fields are used by NFSv4.0 although it doesn't do a session. 1063 */ 1064 dsp = malloc(sizeof(struct nfsclds), M_NFSCLDS, M_WAITOK | M_ZERO); 1065 mtx_init(&dsp->nfsclds_mtx, "nfsds", NULL, MTX_DEF); 1066 mtx_init(&dsp->nfsclds_sess.nfsess_mtx, "nfssession", NULL, MTX_DEF); 1067 NFSLOCKMNT(nmp); 1068 TAILQ_INSERT_HEAD(&nmp->nm_sess, dsp, nfsclds_list); 1069 tsep = NFSMNT_MDSSESSION(nmp); 1070 NFSUNLOCKMNT(nmp); 1071 1072 nfscl_reqstart(nd, NFSPROC_SETCLIENTID, nmp, NULL, 0, NULL, NULL, 0, 0, 1073 false); 1074 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1075 *tl++ = txdr_unsigned(nfsboottime.tv_sec); 1076 *tl = txdr_unsigned(clp->nfsc_rev); 1077 (void) nfsm_strtom(nd, clp->nfsc_id, clp->nfsc_idlen); 1078 1079 /* 1080 * set up the callback address 1081 */ 1082 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1083 *tl = txdr_unsigned(NFS_CALLBCKPROG); 1084 callblen = strlen(nfsv4_callbackaddr); 1085 if (callblen == 0) 1086 cp = nfscl_getmyip(nmp, &a6, &isinet6); 1087 if (nfscl_enablecallb && nfs_numnfscbd > 0 && 1088 (callblen > 0 || cp != NULL)) { 1089 port = htons(nfsv4_cbport); 1090 cp2 = (u_int8_t *)&port; 1091 #ifdef INET6 1092 if ((callblen > 0 && 1093 strchr(nfsv4_callbackaddr, ':')) || isinet6) { 1094 char ip6buf[INET6_ADDRSTRLEN], *ip6add; 1095 1096 (void) nfsm_strtom(nd, "tcp6", 4); 1097 if (callblen == 0) { 1098 ip6_sprintf(ip6buf, (struct in6_addr *)cp); 1099 ip6add = ip6buf; 1100 } else { 1101 ip6add = nfsv4_callbackaddr; 1102 } 1103 snprintf(addr, INET6_ADDRSTRLEN + 9, "%s.%d.%d", 1104 ip6add, cp2[0], cp2[1]); 1105 } else 1106 #endif 1107 { 1108 (void) nfsm_strtom(nd, "tcp", 3); 1109 if (callblen == 0) 1110 snprintf(addr, INET6_ADDRSTRLEN + 9, 1111 "%d.%d.%d.%d.%d.%d", cp[0], cp[1], 1112 cp[2], cp[3], cp2[0], cp2[1]); 1113 else 1114 snprintf(addr, INET6_ADDRSTRLEN + 9, 1115 "%s.%d.%d", nfsv4_callbackaddr, 1116 cp2[0], cp2[1]); 1117 } 1118 (void) nfsm_strtom(nd, addr, strlen(addr)); 1119 } else { 1120 (void) nfsm_strtom(nd, "tcp", 3); 1121 (void) nfsm_strtom(nd, "0.0.0.0.0.0", 11); 1122 } 1123 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1124 *tl = txdr_unsigned(clp->nfsc_cbident); 1125 nd->nd_flag |= ND_USEGSSNAME; 1126 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 1127 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 1128 if (error) 1129 return (error); 1130 if (nd->nd_repstat == 0) { 1131 NFSM_DISSECT(tl, u_int32_t *, 4 * NFSX_UNSIGNED); 1132 tsep->nfsess_clientid.lval[0] = *tl++; 1133 tsep->nfsess_clientid.lval[1] = *tl++; 1134 confirm.lval[0] = *tl++; 1135 confirm.lval[1] = *tl; 1136 m_freem(nd->nd_mrep); 1137 nd->nd_mrep = NULL; 1138 1139 /* 1140 * and confirm it. 1141 */ 1142 nfscl_reqstart(nd, NFSPROC_SETCLIENTIDCFRM, nmp, NULL, 0, NULL, 1143 NULL, 0, 0, false); 1144 NFSM_BUILD(tl, u_int32_t *, 4 * NFSX_UNSIGNED); 1145 *tl++ = tsep->nfsess_clientid.lval[0]; 1146 *tl++ = tsep->nfsess_clientid.lval[1]; 1147 *tl++ = confirm.lval[0]; 1148 *tl = confirm.lval[1]; 1149 nd->nd_flag |= ND_USEGSSNAME; 1150 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, 1151 cred, NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 1152 if (error) 1153 return (error); 1154 m_freem(nd->nd_mrep); 1155 nd->nd_mrep = NULL; 1156 if (nd->nd_repstat == 0) { 1157 nfscl_reqstart(nd, NFSPROC_GETATTR, nmp, nmp->nm_fh, 1158 nmp->nm_fhsize, NULL, NULL, 0, 0, false); 1159 NFSZERO_ATTRBIT(&attrbits); 1160 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_LEASETIME); 1161 (void) nfsrv_putattrbit(nd, &attrbits); 1162 nd->nd_flag |= ND_USEGSSNAME; 1163 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, 1164 cred, NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 1165 if (error) 1166 return (error); 1167 if (nd->nd_repstat == 0) { 1168 error = nfsv4_loadattr(nd, NULL, NULL, NULL, NULL, 0, NULL, 1169 NULL, NULL, NULL, NULL, 0, NULL, &lease, NULL, p, cred); 1170 if (error) 1171 goto nfsmout; 1172 clp->nfsc_renew = NFSCL_RENEW(lease); 1173 clp->nfsc_expire = NFSD_MONOSEC + clp->nfsc_renew; 1174 clp->nfsc_clientidrev++; 1175 if (clp->nfsc_clientidrev == 0) 1176 clp->nfsc_clientidrev++; 1177 } 1178 } 1179 } 1180 error = nd->nd_repstat; 1181 nfsmout: 1182 m_freem(nd->nd_mrep); 1183 return (error); 1184 } 1185 1186 /* 1187 * nfs getattr call. 1188 */ 1189 int 1190 nfsrpc_getattr(vnode_t vp, struct ucred *cred, NFSPROC_T *p, 1191 struct nfsvattr *nap, void *stuff) 1192 { 1193 struct nfsrv_descript nfsd, *nd = &nfsd; 1194 int error; 1195 nfsattrbit_t attrbits; 1196 1197 NFSCL_REQSTART(nd, NFSPROC_GETATTR, vp); 1198 if (nd->nd_flag & ND_NFSV4) { 1199 NFSGETATTR_ATTRBIT(&attrbits); 1200 (void) nfsrv_putattrbit(nd, &attrbits); 1201 } 1202 error = nfscl_request(nd, vp, p, cred, stuff); 1203 if (error) 1204 return (error); 1205 if (!nd->nd_repstat) 1206 error = nfsm_loadattr(nd, nap); 1207 else 1208 error = nd->nd_repstat; 1209 m_freem(nd->nd_mrep); 1210 return (error); 1211 } 1212 1213 /* 1214 * nfs getattr call with non-vnode arguemnts. 1215 */ 1216 int 1217 nfsrpc_getattrnovp(struct nfsmount *nmp, u_int8_t *fhp, int fhlen, int syscred, 1218 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, u_int64_t *xidp, 1219 uint32_t *leasep) 1220 { 1221 struct nfsrv_descript nfsd, *nd = &nfsd; 1222 int error, vers = NFS_VER2; 1223 nfsattrbit_t attrbits; 1224 1225 nfscl_reqstart(nd, NFSPROC_GETATTR, nmp, fhp, fhlen, NULL, NULL, 0, 0, 1226 false); 1227 if (nd->nd_flag & ND_NFSV4) { 1228 vers = NFS_VER4; 1229 NFSGETATTR_ATTRBIT(&attrbits); 1230 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_LEASETIME); 1231 (void) nfsrv_putattrbit(nd, &attrbits); 1232 } else if (nd->nd_flag & ND_NFSV3) { 1233 vers = NFS_VER3; 1234 } 1235 if (syscred) 1236 nd->nd_flag |= ND_USEGSSNAME; 1237 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 1238 NFS_PROG, vers, NULL, 1, xidp, NULL); 1239 if (error) 1240 return (error); 1241 if (nd->nd_repstat == 0) { 1242 if ((nd->nd_flag & ND_NFSV4) != 0) 1243 error = nfsv4_loadattr(nd, NULL, nap, NULL, NULL, 0, 1244 NULL, NULL, NULL, NULL, NULL, 0, NULL, leasep, NULL, 1245 NULL, NULL); 1246 else 1247 error = nfsm_loadattr(nd, nap); 1248 } else 1249 error = nd->nd_repstat; 1250 m_freem(nd->nd_mrep); 1251 return (error); 1252 } 1253 1254 /* 1255 * Do an nfs setattr operation. 1256 */ 1257 int 1258 nfsrpc_setattr(vnode_t vp, struct vattr *vap, NFSACL_T *aclp, 1259 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *rnap, int *attrflagp, 1260 void *stuff) 1261 { 1262 int error, expireret = 0, openerr, retrycnt; 1263 u_int32_t clidrev = 0, mode; 1264 struct nfsmount *nmp = VFSTONFS(vp->v_mount); 1265 struct nfsfh *nfhp; 1266 nfsv4stateid_t stateid; 1267 void *lckp; 1268 1269 if (nmp->nm_clp != NULL) 1270 clidrev = nmp->nm_clp->nfsc_clientidrev; 1271 if (vap != NULL && NFSATTRISSET(u_quad_t, vap, va_size)) 1272 mode = NFSV4OPEN_ACCESSWRITE; 1273 else 1274 mode = NFSV4OPEN_ACCESSREAD; 1275 retrycnt = 0; 1276 do { 1277 lckp = NULL; 1278 openerr = 1; 1279 if (NFSHASNFSV4(nmp)) { 1280 nfhp = VTONFS(vp)->n_fhp; 1281 error = nfscl_getstateid(vp, nfhp->nfh_fh, 1282 nfhp->nfh_len, mode, 0, cred, p, &stateid, &lckp); 1283 if (error && vnode_vtype(vp) == VREG && 1284 (mode == NFSV4OPEN_ACCESSWRITE || 1285 nfstest_openallsetattr)) { 1286 /* 1287 * No Open stateid, so try and open the file 1288 * now. 1289 */ 1290 if (mode == NFSV4OPEN_ACCESSWRITE) 1291 openerr = nfsrpc_open(vp, FWRITE, cred, 1292 p); 1293 else 1294 openerr = nfsrpc_open(vp, FREAD, cred, 1295 p); 1296 if (!openerr) 1297 (void) nfscl_getstateid(vp, 1298 nfhp->nfh_fh, nfhp->nfh_len, 1299 mode, 0, cred, p, &stateid, &lckp); 1300 } 1301 } 1302 if (vap != NULL) 1303 error = nfsrpc_setattrrpc(vp, vap, &stateid, cred, p, 1304 rnap, attrflagp, stuff); 1305 else 1306 error = nfsrpc_setaclrpc(vp, cred, p, aclp, &stateid, 1307 stuff); 1308 if (error == NFSERR_OPENMODE && mode == NFSV4OPEN_ACCESSREAD) { 1309 NFSLOCKMNT(nmp); 1310 nmp->nm_state |= NFSSTA_OPENMODE; 1311 NFSUNLOCKMNT(nmp); 1312 } 1313 if (error == NFSERR_STALESTATEID) 1314 nfscl_initiate_recovery(nmp->nm_clp); 1315 if (lckp != NULL) 1316 nfscl_lockderef(lckp); 1317 if (!openerr) 1318 (void) nfsrpc_close(vp, 0, p); 1319 if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 1320 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 1321 error == NFSERR_OLDSTATEID || error == NFSERR_BADSESSION) { 1322 (void) nfs_catnap(PZERO, error, "nfs_setattr"); 1323 } else if ((error == NFSERR_EXPIRED || 1324 error == NFSERR_BADSTATEID) && clidrev != 0) { 1325 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p); 1326 } 1327 retrycnt++; 1328 } while (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 1329 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 1330 error == NFSERR_BADSESSION || 1331 (error == NFSERR_OLDSTATEID && retrycnt < 20) || 1332 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) && 1333 expireret == 0 && clidrev != 0 && retrycnt < 4) || 1334 (error == NFSERR_OPENMODE && mode == NFSV4OPEN_ACCESSREAD && 1335 retrycnt < 4)); 1336 if (error && retrycnt >= 4) 1337 error = EIO; 1338 return (error); 1339 } 1340 1341 static int 1342 nfsrpc_setattrrpc(vnode_t vp, struct vattr *vap, 1343 nfsv4stateid_t *stateidp, struct ucred *cred, NFSPROC_T *p, 1344 struct nfsvattr *rnap, int *attrflagp, void *stuff) 1345 { 1346 u_int32_t *tl; 1347 struct nfsrv_descript nfsd, *nd = &nfsd; 1348 int error; 1349 nfsattrbit_t attrbits; 1350 1351 *attrflagp = 0; 1352 NFSCL_REQSTART(nd, NFSPROC_SETATTR, vp); 1353 if (nd->nd_flag & ND_NFSV4) 1354 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID); 1355 vap->va_type = vnode_vtype(vp); 1356 nfscl_fillsattr(nd, vap, vp, NFSSATTR_FULL, 0); 1357 if (nd->nd_flag & ND_NFSV3) { 1358 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1359 *tl = newnfs_false; 1360 } else if (nd->nd_flag & ND_NFSV4) { 1361 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1362 *tl = txdr_unsigned(NFSV4OP_GETATTR); 1363 NFSGETATTR_ATTRBIT(&attrbits); 1364 (void) nfsrv_putattrbit(nd, &attrbits); 1365 } 1366 error = nfscl_request(nd, vp, p, cred, stuff); 1367 if (error) 1368 return (error); 1369 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) 1370 error = nfscl_wcc_data(nd, vp, rnap, attrflagp, NULL, stuff); 1371 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == ND_NFSV4 && !error) 1372 error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL); 1373 if (!(nd->nd_flag & ND_NFSV3) && !nd->nd_repstat && !error) 1374 error = nfscl_postop_attr(nd, rnap, attrflagp, stuff); 1375 m_freem(nd->nd_mrep); 1376 if (nd->nd_repstat && !error) 1377 error = nd->nd_repstat; 1378 return (error); 1379 } 1380 1381 /* 1382 * nfs lookup rpc 1383 */ 1384 int 1385 nfsrpc_lookup(vnode_t dvp, char *name, int len, struct ucred *cred, 1386 NFSPROC_T *p, struct nfsvattr *dnap, struct nfsvattr *nap, 1387 struct nfsfh **nfhpp, int *attrflagp, int *dattrflagp, void *stuff) 1388 { 1389 u_int32_t *tl; 1390 struct nfsrv_descript nfsd, *nd = &nfsd; 1391 struct nfsmount *nmp; 1392 struct nfsnode *np; 1393 struct nfsfh *nfhp; 1394 nfsattrbit_t attrbits; 1395 int error = 0, lookupp = 0; 1396 1397 *attrflagp = 0; 1398 *dattrflagp = 0; 1399 if (vnode_vtype(dvp) != VDIR) 1400 return (ENOTDIR); 1401 nmp = VFSTONFS(dvp->v_mount); 1402 if (len > NFS_MAXNAMLEN) 1403 return (ENAMETOOLONG); 1404 if (NFSHASNFSV4(nmp) && len == 1 && 1405 name[0] == '.') { 1406 /* 1407 * Just return the current dir's fh. 1408 */ 1409 np = VTONFS(dvp); 1410 nfhp = malloc(sizeof (struct nfsfh) + 1411 np->n_fhp->nfh_len, M_NFSFH, M_WAITOK); 1412 nfhp->nfh_len = np->n_fhp->nfh_len; 1413 NFSBCOPY(np->n_fhp->nfh_fh, nfhp->nfh_fh, nfhp->nfh_len); 1414 *nfhpp = nfhp; 1415 return (0); 1416 } 1417 if (NFSHASNFSV4(nmp) && len == 2 && 1418 name[0] == '.' && name[1] == '.') { 1419 lookupp = 1; 1420 NFSCL_REQSTART(nd, NFSPROC_LOOKUPP, dvp); 1421 } else { 1422 NFSCL_REQSTART(nd, NFSPROC_LOOKUP, dvp); 1423 (void) nfsm_strtom(nd, name, len); 1424 } 1425 if (nd->nd_flag & ND_NFSV4) { 1426 NFSGETATTR_ATTRBIT(&attrbits); 1427 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1428 *tl++ = txdr_unsigned(NFSV4OP_GETFH); 1429 *tl = txdr_unsigned(NFSV4OP_GETATTR); 1430 (void) nfsrv_putattrbit(nd, &attrbits); 1431 } 1432 error = nfscl_request(nd, dvp, p, cred, stuff); 1433 if (error) 1434 return (error); 1435 if (nd->nd_repstat) { 1436 /* 1437 * When an NFSv4 Lookupp returns ENOENT, it means that 1438 * the lookup is at the root of an fs, so return this dir. 1439 */ 1440 if (nd->nd_repstat == NFSERR_NOENT && lookupp) { 1441 np = VTONFS(dvp); 1442 nfhp = malloc(sizeof (struct nfsfh) + 1443 np->n_fhp->nfh_len, M_NFSFH, M_WAITOK); 1444 nfhp->nfh_len = np->n_fhp->nfh_len; 1445 NFSBCOPY(np->n_fhp->nfh_fh, nfhp->nfh_fh, nfhp->nfh_len); 1446 *nfhpp = nfhp; 1447 m_freem(nd->nd_mrep); 1448 return (0); 1449 } 1450 if (nd->nd_flag & ND_NFSV3) 1451 error = nfscl_postop_attr(nd, dnap, dattrflagp, stuff); 1452 else if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == 1453 ND_NFSV4) { 1454 /* Load the directory attributes. */ 1455 error = nfsm_loadattr(nd, dnap); 1456 if (error == 0) 1457 *dattrflagp = 1; 1458 } 1459 goto nfsmout; 1460 } 1461 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == ND_NFSV4) { 1462 /* Load the directory attributes. */ 1463 error = nfsm_loadattr(nd, dnap); 1464 if (error != 0) 1465 goto nfsmout; 1466 *dattrflagp = 1; 1467 /* Skip over the Lookup and GetFH operation status values. */ 1468 NFSM_DISSECT(tl, u_int32_t *, 4 * NFSX_UNSIGNED); 1469 } 1470 error = nfsm_getfh(nd, nfhpp); 1471 if (error) 1472 goto nfsmout; 1473 1474 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 1475 if ((nd->nd_flag & ND_NFSV3) && !error) 1476 error = nfscl_postop_attr(nd, dnap, dattrflagp, stuff); 1477 nfsmout: 1478 m_freem(nd->nd_mrep); 1479 if (!error && nd->nd_repstat) 1480 error = nd->nd_repstat; 1481 return (error); 1482 } 1483 1484 /* 1485 * Do a readlink rpc. 1486 */ 1487 int 1488 nfsrpc_readlink(vnode_t vp, struct uio *uiop, struct ucred *cred, 1489 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff) 1490 { 1491 u_int32_t *tl; 1492 struct nfsrv_descript nfsd, *nd = &nfsd; 1493 struct nfsnode *np = VTONFS(vp); 1494 nfsattrbit_t attrbits; 1495 int error, len, cangetattr = 1; 1496 1497 *attrflagp = 0; 1498 NFSCL_REQSTART(nd, NFSPROC_READLINK, vp); 1499 if (nd->nd_flag & ND_NFSV4) { 1500 /* 1501 * And do a Getattr op. 1502 */ 1503 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1504 *tl = txdr_unsigned(NFSV4OP_GETATTR); 1505 NFSGETATTR_ATTRBIT(&attrbits); 1506 (void) nfsrv_putattrbit(nd, &attrbits); 1507 } 1508 error = nfscl_request(nd, vp, p, cred, stuff); 1509 if (error) 1510 return (error); 1511 if (nd->nd_flag & ND_NFSV3) 1512 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 1513 if (!nd->nd_repstat && !error) { 1514 NFSM_STRSIZ(len, NFS_MAXPATHLEN); 1515 /* 1516 * This seems weird to me, but must have been added to 1517 * FreeBSD for some reason. The only thing I can think of 1518 * is that there was/is some server that replies with 1519 * more link data than it should? 1520 */ 1521 if (len == NFS_MAXPATHLEN) { 1522 NFSLOCKNODE(np); 1523 if (np->n_size > 0 && np->n_size < NFS_MAXPATHLEN) { 1524 len = np->n_size; 1525 cangetattr = 0; 1526 } 1527 NFSUNLOCKNODE(np); 1528 } 1529 error = nfsm_mbufuio(nd, uiop, len); 1530 if ((nd->nd_flag & ND_NFSV4) && !error && cangetattr) 1531 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 1532 } 1533 if (nd->nd_repstat && !error) 1534 error = nd->nd_repstat; 1535 nfsmout: 1536 m_freem(nd->nd_mrep); 1537 return (error); 1538 } 1539 1540 /* 1541 * Read operation. 1542 */ 1543 int 1544 nfsrpc_read(vnode_t vp, struct uio *uiop, struct ucred *cred, 1545 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff) 1546 { 1547 int error, expireret = 0, retrycnt; 1548 u_int32_t clidrev = 0; 1549 struct nfsmount *nmp = VFSTONFS(vp->v_mount); 1550 struct nfsnode *np = VTONFS(vp); 1551 struct ucred *newcred; 1552 struct nfsfh *nfhp = NULL; 1553 nfsv4stateid_t stateid; 1554 void *lckp; 1555 1556 if (nmp->nm_clp != NULL) 1557 clidrev = nmp->nm_clp->nfsc_clientidrev; 1558 newcred = cred; 1559 if (NFSHASNFSV4(nmp)) { 1560 nfhp = np->n_fhp; 1561 newcred = NFSNEWCRED(cred); 1562 } 1563 retrycnt = 0; 1564 do { 1565 lckp = NULL; 1566 if (NFSHASNFSV4(nmp)) 1567 (void)nfscl_getstateid(vp, nfhp->nfh_fh, nfhp->nfh_len, 1568 NFSV4OPEN_ACCESSREAD, 0, newcred, p, &stateid, 1569 &lckp); 1570 error = nfsrpc_readrpc(vp, uiop, newcred, &stateid, p, nap, 1571 attrflagp, stuff); 1572 if (error == NFSERR_OPENMODE) { 1573 NFSLOCKMNT(nmp); 1574 nmp->nm_state |= NFSSTA_OPENMODE; 1575 NFSUNLOCKMNT(nmp); 1576 } 1577 if (error == NFSERR_STALESTATEID) 1578 nfscl_initiate_recovery(nmp->nm_clp); 1579 if (lckp != NULL) 1580 nfscl_lockderef(lckp); 1581 if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 1582 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 1583 error == NFSERR_OLDSTATEID || error == NFSERR_BADSESSION) { 1584 (void) nfs_catnap(PZERO, error, "nfs_read"); 1585 } else if ((error == NFSERR_EXPIRED || 1586 error == NFSERR_BADSTATEID) && clidrev != 0) { 1587 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p); 1588 } 1589 retrycnt++; 1590 } while (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 1591 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 1592 error == NFSERR_BADSESSION || 1593 (error == NFSERR_OLDSTATEID && retrycnt < 20) || 1594 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) && 1595 expireret == 0 && clidrev != 0 && retrycnt < 4) || 1596 (error == NFSERR_OPENMODE && retrycnt < 4)); 1597 if (error && retrycnt >= 4) 1598 error = EIO; 1599 if (NFSHASNFSV4(nmp)) 1600 NFSFREECRED(newcred); 1601 return (error); 1602 } 1603 1604 /* 1605 * The actual read RPC. 1606 */ 1607 static int 1608 nfsrpc_readrpc(vnode_t vp, struct uio *uiop, struct ucred *cred, 1609 nfsv4stateid_t *stateidp, NFSPROC_T *p, struct nfsvattr *nap, 1610 int *attrflagp, void *stuff) 1611 { 1612 u_int32_t *tl; 1613 int error = 0, len, retlen, tsiz, eof = 0; 1614 struct nfsrv_descript nfsd; 1615 struct nfsmount *nmp = VFSTONFS(vp->v_mount); 1616 struct nfsrv_descript *nd = &nfsd; 1617 int rsize; 1618 off_t tmp_off; 1619 1620 *attrflagp = 0; 1621 tsiz = uiop->uio_resid; 1622 tmp_off = uiop->uio_offset + tsiz; 1623 NFSLOCKMNT(nmp); 1624 if (tmp_off > nmp->nm_maxfilesize || tmp_off < uiop->uio_offset) { 1625 NFSUNLOCKMNT(nmp); 1626 return (EFBIG); 1627 } 1628 rsize = nmp->nm_rsize; 1629 NFSUNLOCKMNT(nmp); 1630 nd->nd_mrep = NULL; 1631 while (tsiz > 0) { 1632 *attrflagp = 0; 1633 len = (tsiz > rsize) ? rsize : tsiz; 1634 NFSCL_REQSTART(nd, NFSPROC_READ, vp); 1635 if (nd->nd_flag & ND_NFSV4) 1636 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID); 1637 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED * 3); 1638 if (nd->nd_flag & ND_NFSV2) { 1639 *tl++ = txdr_unsigned(uiop->uio_offset); 1640 *tl++ = txdr_unsigned(len); 1641 *tl = 0; 1642 } else { 1643 txdr_hyper(uiop->uio_offset, tl); 1644 *(tl + 2) = txdr_unsigned(len); 1645 } 1646 /* 1647 * Since I can't do a Getattr for NFSv4 for Write, there 1648 * doesn't seem any point in doing one here, either. 1649 * (See the comment in nfsrpc_writerpc() for more info.) 1650 */ 1651 error = nfscl_request(nd, vp, p, cred, stuff); 1652 if (error) 1653 return (error); 1654 if (nd->nd_flag & ND_NFSV3) { 1655 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 1656 } else if (!nd->nd_repstat && (nd->nd_flag & ND_NFSV2)) { 1657 error = nfsm_loadattr(nd, nap); 1658 if (!error) 1659 *attrflagp = 1; 1660 } 1661 if (nd->nd_repstat || error) { 1662 if (!error) 1663 error = nd->nd_repstat; 1664 goto nfsmout; 1665 } 1666 if (nd->nd_flag & ND_NFSV3) { 1667 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1668 eof = fxdr_unsigned(int, *(tl + 1)); 1669 } else if (nd->nd_flag & ND_NFSV4) { 1670 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 1671 eof = fxdr_unsigned(int, *tl); 1672 } 1673 NFSM_STRSIZ(retlen, len); 1674 error = nfsm_mbufuio(nd, uiop, retlen); 1675 if (error) 1676 goto nfsmout; 1677 m_freem(nd->nd_mrep); 1678 nd->nd_mrep = NULL; 1679 tsiz -= retlen; 1680 if (!(nd->nd_flag & ND_NFSV2)) { 1681 if (eof || retlen == 0) 1682 tsiz = 0; 1683 } else if (retlen < len) 1684 tsiz = 0; 1685 } 1686 return (0); 1687 nfsmout: 1688 if (nd->nd_mrep != NULL) 1689 m_freem(nd->nd_mrep); 1690 return (error); 1691 } 1692 1693 /* 1694 * nfs write operation 1695 * When called_from_strategy != 0, it should return EIO for an error that 1696 * indicates recovery is in progress, so that the buffer will be left 1697 * dirty and be written back to the server later. If it loops around, 1698 * the recovery thread could get stuck waiting for the buffer and recovery 1699 * will then deadlock. 1700 */ 1701 int 1702 nfsrpc_write(vnode_t vp, struct uio *uiop, int *iomode, int *must_commit, 1703 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, 1704 void *stuff, int called_from_strategy) 1705 { 1706 int error, expireret = 0, retrycnt, nostateid; 1707 u_int32_t clidrev = 0; 1708 struct nfsmount *nmp = VFSTONFS(vp->v_mount); 1709 struct nfsnode *np = VTONFS(vp); 1710 struct ucred *newcred; 1711 struct nfsfh *nfhp = NULL; 1712 nfsv4stateid_t stateid; 1713 void *lckp; 1714 1715 *must_commit = 0; 1716 if (nmp->nm_clp != NULL) 1717 clidrev = nmp->nm_clp->nfsc_clientidrev; 1718 newcred = cred; 1719 if (NFSHASNFSV4(nmp)) { 1720 newcred = NFSNEWCRED(cred); 1721 nfhp = np->n_fhp; 1722 } 1723 retrycnt = 0; 1724 do { 1725 lckp = NULL; 1726 nostateid = 0; 1727 if (NFSHASNFSV4(nmp)) { 1728 (void)nfscl_getstateid(vp, nfhp->nfh_fh, nfhp->nfh_len, 1729 NFSV4OPEN_ACCESSWRITE, 0, newcred, p, &stateid, 1730 &lckp); 1731 if (stateid.other[0] == 0 && stateid.other[1] == 0 && 1732 stateid.other[2] == 0) { 1733 nostateid = 1; 1734 NFSCL_DEBUG(1, "stateid0 in write\n"); 1735 } 1736 } 1737 1738 /* 1739 * If there is no stateid for NFSv4, it means this is an 1740 * extraneous write after close. Basically a poorly 1741 * implemented buffer cache. Just don't do the write. 1742 */ 1743 if (nostateid) 1744 error = 0; 1745 else 1746 error = nfsrpc_writerpc(vp, uiop, iomode, must_commit, 1747 newcred, &stateid, p, nap, attrflagp, stuff); 1748 if (error == NFSERR_STALESTATEID) 1749 nfscl_initiate_recovery(nmp->nm_clp); 1750 if (lckp != NULL) 1751 nfscl_lockderef(lckp); 1752 if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 1753 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 1754 error == NFSERR_OLDSTATEID || error == NFSERR_BADSESSION) { 1755 (void) nfs_catnap(PZERO, error, "nfs_write"); 1756 } else if ((error == NFSERR_EXPIRED || 1757 error == NFSERR_BADSTATEID) && clidrev != 0) { 1758 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p); 1759 } 1760 retrycnt++; 1761 } while (error == NFSERR_GRACE || error == NFSERR_DELAY || 1762 ((error == NFSERR_STALESTATEID || error == NFSERR_BADSESSION || 1763 error == NFSERR_STALEDONTRECOVER) && called_from_strategy == 0) || 1764 (error == NFSERR_OLDSTATEID && retrycnt < 20) || 1765 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) && 1766 expireret == 0 && clidrev != 0 && retrycnt < 4)); 1767 if (error != 0 && (retrycnt >= 4 || 1768 ((error == NFSERR_STALESTATEID || error == NFSERR_BADSESSION || 1769 error == NFSERR_STALEDONTRECOVER) && called_from_strategy != 0))) 1770 error = EIO; 1771 if (NFSHASNFSV4(nmp)) 1772 NFSFREECRED(newcred); 1773 return (error); 1774 } 1775 1776 /* 1777 * The actual write RPC. 1778 */ 1779 static int 1780 nfsrpc_writerpc(vnode_t vp, struct uio *uiop, int *iomode, 1781 int *must_commit, struct ucred *cred, nfsv4stateid_t *stateidp, 1782 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff) 1783 { 1784 u_int32_t *tl; 1785 struct nfsmount *nmp = VFSTONFS(vp->v_mount); 1786 struct nfsnode *np = VTONFS(vp); 1787 int error = 0, len, tsiz, rlen, commit, committed = NFSWRITE_FILESYNC; 1788 int wccflag = 0, wsize; 1789 int32_t backup; 1790 struct nfsrv_descript nfsd; 1791 struct nfsrv_descript *nd = &nfsd; 1792 nfsattrbit_t attrbits; 1793 off_t tmp_off; 1794 1795 KASSERT(uiop->uio_iovcnt == 1, ("nfs: writerpc iovcnt > 1")); 1796 *attrflagp = 0; 1797 tsiz = uiop->uio_resid; 1798 tmp_off = uiop->uio_offset + tsiz; 1799 NFSLOCKMNT(nmp); 1800 if (tmp_off > nmp->nm_maxfilesize || tmp_off < uiop->uio_offset) { 1801 NFSUNLOCKMNT(nmp); 1802 return (EFBIG); 1803 } 1804 wsize = nmp->nm_wsize; 1805 NFSUNLOCKMNT(nmp); 1806 nd->nd_mrep = NULL; /* NFSv2 sometimes does a write with */ 1807 nd->nd_repstat = 0; /* uio_resid == 0, so the while is not done */ 1808 while (tsiz > 0) { 1809 *attrflagp = 0; 1810 len = (tsiz > wsize) ? wsize : tsiz; 1811 NFSCL_REQSTART(nd, NFSPROC_WRITE, vp); 1812 if (nd->nd_flag & ND_NFSV4) { 1813 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID); 1814 NFSM_BUILD(tl, u_int32_t *, NFSX_HYPER+2*NFSX_UNSIGNED); 1815 txdr_hyper(uiop->uio_offset, tl); 1816 tl += 2; 1817 *tl++ = txdr_unsigned(*iomode); 1818 *tl = txdr_unsigned(len); 1819 } else if (nd->nd_flag & ND_NFSV3) { 1820 NFSM_BUILD(tl, u_int32_t *, NFSX_HYPER+3*NFSX_UNSIGNED); 1821 txdr_hyper(uiop->uio_offset, tl); 1822 tl += 2; 1823 *tl++ = txdr_unsigned(len); 1824 *tl++ = txdr_unsigned(*iomode); 1825 *tl = txdr_unsigned(len); 1826 } else { 1827 u_int32_t x; 1828 1829 NFSM_BUILD(tl, u_int32_t *, 4 * NFSX_UNSIGNED); 1830 /* 1831 * Not sure why someone changed this, since the 1832 * RFC clearly states that "beginoffset" and 1833 * "totalcount" are ignored, but it wouldn't 1834 * surprise me if there's a busted server out there. 1835 */ 1836 /* Set both "begin" and "current" to non-garbage. */ 1837 x = txdr_unsigned((u_int32_t)uiop->uio_offset); 1838 *tl++ = x; /* "begin offset" */ 1839 *tl++ = x; /* "current offset" */ 1840 x = txdr_unsigned(len); 1841 *tl++ = x; /* total to this offset */ 1842 *tl = x; /* size of this write */ 1843 1844 } 1845 nfsm_uiombuf(nd, uiop, len); 1846 /* 1847 * Although it is tempting to do a normal Getattr Op in the 1848 * NFSv4 compound, the result can be a nearly hung client 1849 * system if the Getattr asks for Owner and/or OwnerGroup. 1850 * It occurs when the client can't map either the Owner or 1851 * Owner_group name in the Getattr reply to a uid/gid. When 1852 * there is a cache miss, the kernel does an upcall to the 1853 * nfsuserd. Then, it can try and read the local /etc/passwd 1854 * or /etc/group file. It can then block in getnewbuf(), 1855 * waiting for dirty writes to be pushed to the NFS server. 1856 * The only reason this doesn't result in a complete 1857 * deadlock, is that the upcall times out and allows 1858 * the write to complete. However, progress is so slow 1859 * that it might just as well be deadlocked. 1860 * As such, we get the rest of the attributes, but not 1861 * Owner or Owner_group. 1862 * nb: nfscl_loadattrcache() needs to be told that these 1863 * partial attributes from a write rpc are being 1864 * passed in, via a argument flag. 1865 */ 1866 if (nd->nd_flag & ND_NFSV4) { 1867 NFSWRITEGETATTR_ATTRBIT(&attrbits); 1868 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1869 *tl = txdr_unsigned(NFSV4OP_GETATTR); 1870 (void) nfsrv_putattrbit(nd, &attrbits); 1871 } 1872 error = nfscl_request(nd, vp, p, cred, stuff); 1873 if (error) 1874 return (error); 1875 if (nd->nd_repstat) { 1876 /* 1877 * In case the rpc gets retried, roll 1878 * the uio fileds changed by nfsm_uiombuf() 1879 * back. 1880 */ 1881 uiop->uio_offset -= len; 1882 uiop->uio_resid += len; 1883 uiop->uio_iov->iov_base = 1884 (char *)uiop->uio_iov->iov_base - len; 1885 uiop->uio_iov->iov_len += len; 1886 } 1887 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) { 1888 error = nfscl_wcc_data(nd, vp, nap, attrflagp, 1889 &wccflag, stuff); 1890 if (error) 1891 goto nfsmout; 1892 } 1893 if (!nd->nd_repstat) { 1894 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) { 1895 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED 1896 + NFSX_VERF); 1897 rlen = fxdr_unsigned(int, *tl++); 1898 if (rlen == 0) { 1899 error = NFSERR_IO; 1900 goto nfsmout; 1901 } else if (rlen < len) { 1902 backup = len - rlen; 1903 uiop->uio_iov->iov_base = 1904 (char *)uiop->uio_iov->iov_base - 1905 backup; 1906 uiop->uio_iov->iov_len += backup; 1907 uiop->uio_offset -= backup; 1908 uiop->uio_resid += backup; 1909 len = rlen; 1910 } 1911 commit = fxdr_unsigned(int, *tl++); 1912 1913 /* 1914 * Return the lowest commitment level 1915 * obtained by any of the RPCs. 1916 */ 1917 if (committed == NFSWRITE_FILESYNC) 1918 committed = commit; 1919 else if (committed == NFSWRITE_DATASYNC && 1920 commit == NFSWRITE_UNSTABLE) 1921 committed = commit; 1922 NFSLOCKMNT(nmp); 1923 if (!NFSHASWRITEVERF(nmp)) { 1924 NFSBCOPY((caddr_t)tl, 1925 (caddr_t)&nmp->nm_verf[0], 1926 NFSX_VERF); 1927 NFSSETWRITEVERF(nmp); 1928 } else if (NFSBCMP(tl, nmp->nm_verf, 1929 NFSX_VERF)) { 1930 *must_commit = 1; 1931 NFSBCOPY(tl, nmp->nm_verf, NFSX_VERF); 1932 } 1933 NFSUNLOCKMNT(nmp); 1934 } 1935 if (nd->nd_flag & ND_NFSV4) 1936 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1937 if (nd->nd_flag & (ND_NFSV2 | ND_NFSV4)) { 1938 error = nfsm_loadattr(nd, nap); 1939 if (!error) 1940 *attrflagp = NFS_LATTR_NOSHRINK; 1941 } 1942 } else { 1943 error = nd->nd_repstat; 1944 } 1945 if (error) 1946 goto nfsmout; 1947 NFSWRITERPC_SETTIME(wccflag, np, nap, (nd->nd_flag & ND_NFSV4)); 1948 m_freem(nd->nd_mrep); 1949 nd->nd_mrep = NULL; 1950 tsiz -= len; 1951 } 1952 nfsmout: 1953 if (nd->nd_mrep != NULL) 1954 m_freem(nd->nd_mrep); 1955 *iomode = committed; 1956 if (nd->nd_repstat && !error) 1957 error = nd->nd_repstat; 1958 return (error); 1959 } 1960 1961 /* 1962 * nfs mknod rpc 1963 * For NFS v2 this is a kludge. Use a create rpc but with the IFMT bits of the 1964 * mode set to specify the file type and the size field for rdev. 1965 */ 1966 int 1967 nfsrpc_mknod(vnode_t dvp, char *name, int namelen, struct vattr *vap, 1968 u_int32_t rdev, enum vtype vtyp, struct ucred *cred, NFSPROC_T *p, 1969 struct nfsvattr *dnap, struct nfsvattr *nnap, struct nfsfh **nfhpp, 1970 int *attrflagp, int *dattrflagp, void *dstuff) 1971 { 1972 u_int32_t *tl; 1973 int error = 0; 1974 struct nfsrv_descript nfsd, *nd = &nfsd; 1975 nfsattrbit_t attrbits; 1976 1977 *nfhpp = NULL; 1978 *attrflagp = 0; 1979 *dattrflagp = 0; 1980 if (namelen > NFS_MAXNAMLEN) 1981 return (ENAMETOOLONG); 1982 NFSCL_REQSTART(nd, NFSPROC_MKNOD, dvp); 1983 if (nd->nd_flag & ND_NFSV4) { 1984 if (vtyp == VBLK || vtyp == VCHR) { 1985 NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 1986 *tl++ = vtonfsv34_type(vtyp); 1987 *tl++ = txdr_unsigned(NFSMAJOR(rdev)); 1988 *tl = txdr_unsigned(NFSMINOR(rdev)); 1989 } else { 1990 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1991 *tl = vtonfsv34_type(vtyp); 1992 } 1993 } 1994 (void) nfsm_strtom(nd, name, namelen); 1995 if (nd->nd_flag & ND_NFSV3) { 1996 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1997 *tl = vtonfsv34_type(vtyp); 1998 } 1999 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) 2000 nfscl_fillsattr(nd, vap, dvp, 0, 0); 2001 if ((nd->nd_flag & ND_NFSV3) && 2002 (vtyp == VCHR || vtyp == VBLK)) { 2003 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2004 *tl++ = txdr_unsigned(NFSMAJOR(rdev)); 2005 *tl = txdr_unsigned(NFSMINOR(rdev)); 2006 } 2007 if (nd->nd_flag & ND_NFSV4) { 2008 NFSGETATTR_ATTRBIT(&attrbits); 2009 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2010 *tl++ = txdr_unsigned(NFSV4OP_GETFH); 2011 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2012 (void) nfsrv_putattrbit(nd, &attrbits); 2013 } 2014 if (nd->nd_flag & ND_NFSV2) 2015 nfscl_fillsattr(nd, vap, dvp, NFSSATTR_SIZERDEV, rdev); 2016 error = nfscl_request(nd, dvp, p, cred, dstuff); 2017 if (error) 2018 return (error); 2019 if (nd->nd_flag & ND_NFSV4) 2020 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 2021 if (!nd->nd_repstat) { 2022 if (nd->nd_flag & ND_NFSV4) { 2023 NFSM_DISSECT(tl, u_int32_t *, 5 * NFSX_UNSIGNED); 2024 error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL); 2025 if (error) 2026 goto nfsmout; 2027 } 2028 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp); 2029 if (error) 2030 goto nfsmout; 2031 } 2032 if (nd->nd_flag & ND_NFSV3) 2033 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 2034 if (!error && nd->nd_repstat) 2035 error = nd->nd_repstat; 2036 nfsmout: 2037 m_freem(nd->nd_mrep); 2038 return (error); 2039 } 2040 2041 /* 2042 * nfs file create call 2043 * Mostly just call the approriate routine. (I separated out v4, so that 2044 * error recovery wouldn't be as difficult.) 2045 */ 2046 int 2047 nfsrpc_create(vnode_t dvp, char *name, int namelen, struct vattr *vap, 2048 nfsquad_t cverf, int fmode, struct ucred *cred, NFSPROC_T *p, 2049 struct nfsvattr *dnap, struct nfsvattr *nnap, struct nfsfh **nfhpp, 2050 int *attrflagp, int *dattrflagp, void *dstuff) 2051 { 2052 int error = 0, newone, expireret = 0, retrycnt, unlocked; 2053 struct nfsclowner *owp; 2054 struct nfscldeleg *dp; 2055 struct nfsmount *nmp = VFSTONFS(dvp->v_mount); 2056 u_int32_t clidrev; 2057 2058 if (NFSHASNFSV4(nmp)) { 2059 retrycnt = 0; 2060 do { 2061 dp = NULL; 2062 error = nfscl_open(dvp, NULL, 0, (NFSV4OPEN_ACCESSWRITE | 2063 NFSV4OPEN_ACCESSREAD), 0, cred, p, &owp, NULL, &newone, 2064 NULL, 1); 2065 if (error) 2066 return (error); 2067 if (nmp->nm_clp != NULL) 2068 clidrev = nmp->nm_clp->nfsc_clientidrev; 2069 else 2070 clidrev = 0; 2071 if (!NFSHASPNFS(nmp) || nfscl_enablecallb == 0 || 2072 nfs_numnfscbd == 0 || retrycnt > 0) 2073 error = nfsrpc_createv4(dvp, name, namelen, vap, cverf, 2074 fmode, owp, &dp, cred, p, dnap, nnap, nfhpp, 2075 attrflagp, dattrflagp, dstuff, &unlocked); 2076 else 2077 error = nfsrpc_getcreatelayout(dvp, name, namelen, vap, 2078 cverf, fmode, owp, &dp, cred, p, dnap, nnap, nfhpp, 2079 attrflagp, dattrflagp, dstuff, &unlocked); 2080 /* 2081 * There is no need to invalidate cached attributes here, 2082 * since new post-delegation issue attributes are always 2083 * returned by nfsrpc_createv4() and these will update the 2084 * attribute cache. 2085 */ 2086 if (dp != NULL) 2087 (void) nfscl_deleg(nmp->nm_mountp, owp->nfsow_clp, 2088 (*nfhpp)->nfh_fh, (*nfhpp)->nfh_len, cred, p, &dp); 2089 nfscl_ownerrelease(nmp, owp, error, newone, unlocked); 2090 if (error == NFSERR_GRACE || error == NFSERR_STALECLIENTID || 2091 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 2092 error == NFSERR_BADSESSION) { 2093 (void) nfs_catnap(PZERO, error, "nfs_open"); 2094 } else if ((error == NFSERR_EXPIRED || 2095 error == NFSERR_BADSTATEID) && clidrev != 0) { 2096 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p); 2097 retrycnt++; 2098 } 2099 } while (error == NFSERR_GRACE || error == NFSERR_STALECLIENTID || 2100 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 2101 error == NFSERR_BADSESSION || 2102 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) && 2103 expireret == 0 && clidrev != 0 && retrycnt < 4)); 2104 if (error && retrycnt >= 4) 2105 error = EIO; 2106 } else { 2107 error = nfsrpc_createv23(dvp, name, namelen, vap, cverf, 2108 fmode, cred, p, dnap, nnap, nfhpp, attrflagp, dattrflagp, 2109 dstuff); 2110 } 2111 return (error); 2112 } 2113 2114 /* 2115 * The create rpc for v2 and 3. 2116 */ 2117 static int 2118 nfsrpc_createv23(vnode_t dvp, char *name, int namelen, struct vattr *vap, 2119 nfsquad_t cverf, int fmode, struct ucred *cred, NFSPROC_T *p, 2120 struct nfsvattr *dnap, struct nfsvattr *nnap, struct nfsfh **nfhpp, 2121 int *attrflagp, int *dattrflagp, void *dstuff) 2122 { 2123 u_int32_t *tl; 2124 int error = 0; 2125 struct nfsrv_descript nfsd, *nd = &nfsd; 2126 2127 *nfhpp = NULL; 2128 *attrflagp = 0; 2129 *dattrflagp = 0; 2130 if (namelen > NFS_MAXNAMLEN) 2131 return (ENAMETOOLONG); 2132 NFSCL_REQSTART(nd, NFSPROC_CREATE, dvp); 2133 (void) nfsm_strtom(nd, name, namelen); 2134 if (nd->nd_flag & ND_NFSV3) { 2135 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2136 if (fmode & O_EXCL) { 2137 *tl = txdr_unsigned(NFSCREATE_EXCLUSIVE); 2138 NFSM_BUILD(tl, u_int32_t *, NFSX_VERF); 2139 *tl++ = cverf.lval[0]; 2140 *tl = cverf.lval[1]; 2141 } else { 2142 *tl = txdr_unsigned(NFSCREATE_UNCHECKED); 2143 nfscl_fillsattr(nd, vap, dvp, 0, 0); 2144 } 2145 } else { 2146 nfscl_fillsattr(nd, vap, dvp, NFSSATTR_SIZE0, 0); 2147 } 2148 error = nfscl_request(nd, dvp, p, cred, dstuff); 2149 if (error) 2150 return (error); 2151 if (nd->nd_repstat == 0) { 2152 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp); 2153 if (error) 2154 goto nfsmout; 2155 } 2156 if (nd->nd_flag & ND_NFSV3) 2157 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 2158 if (nd->nd_repstat != 0 && error == 0) 2159 error = nd->nd_repstat; 2160 nfsmout: 2161 m_freem(nd->nd_mrep); 2162 return (error); 2163 } 2164 2165 static int 2166 nfsrpc_createv4(vnode_t dvp, char *name, int namelen, struct vattr *vap, 2167 nfsquad_t cverf, int fmode, struct nfsclowner *owp, struct nfscldeleg **dpp, 2168 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap, 2169 struct nfsvattr *nnap, struct nfsfh **nfhpp, int *attrflagp, 2170 int *dattrflagp, void *dstuff, int *unlockedp) 2171 { 2172 u_int32_t *tl; 2173 int error = 0, deleg, newone, ret, acesize, limitby; 2174 struct nfsrv_descript nfsd, *nd = &nfsd; 2175 struct nfsclopen *op; 2176 struct nfscldeleg *dp = NULL; 2177 struct nfsnode *np; 2178 struct nfsfh *nfhp; 2179 nfsattrbit_t attrbits; 2180 nfsv4stateid_t stateid; 2181 u_int32_t rflags; 2182 struct nfsmount *nmp; 2183 struct nfsclsession *tsep; 2184 2185 nmp = VFSTONFS(dvp->v_mount); 2186 np = VTONFS(dvp); 2187 *unlockedp = 0; 2188 *nfhpp = NULL; 2189 *dpp = NULL; 2190 *attrflagp = 0; 2191 *dattrflagp = 0; 2192 if (namelen > NFS_MAXNAMLEN) 2193 return (ENAMETOOLONG); 2194 NFSCL_REQSTART(nd, NFSPROC_CREATE, dvp); 2195 /* 2196 * For V4, this is actually an Open op. 2197 */ 2198 NFSM_BUILD(tl, u_int32_t *, 5 * NFSX_UNSIGNED); 2199 *tl++ = txdr_unsigned(owp->nfsow_seqid); 2200 *tl++ = txdr_unsigned(NFSV4OPEN_ACCESSWRITE | 2201 NFSV4OPEN_ACCESSREAD); 2202 *tl++ = txdr_unsigned(NFSV4OPEN_DENYNONE); 2203 tsep = nfsmnt_mdssession(nmp); 2204 *tl++ = tsep->nfsess_clientid.lval[0]; 2205 *tl = tsep->nfsess_clientid.lval[1]; 2206 (void) nfsm_strtom(nd, owp->nfsow_owner, NFSV4CL_LOCKNAMELEN); 2207 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2208 *tl++ = txdr_unsigned(NFSV4OPEN_CREATE); 2209 if (fmode & O_EXCL) { 2210 if (NFSHASNFSV4N(nmp)) { 2211 if (NFSHASSESSPERSIST(nmp)) { 2212 /* Use GUARDED for persistent sessions. */ 2213 *tl = txdr_unsigned(NFSCREATE_GUARDED); 2214 nfscl_fillsattr(nd, vap, dvp, 0, 0); 2215 } else { 2216 /* Otherwise, use EXCLUSIVE4_1. */ 2217 *tl = txdr_unsigned(NFSCREATE_EXCLUSIVE41); 2218 NFSM_BUILD(tl, u_int32_t *, NFSX_VERF); 2219 *tl++ = cverf.lval[0]; 2220 *tl = cverf.lval[1]; 2221 nfscl_fillsattr(nd, vap, dvp, 0, 0); 2222 } 2223 } else { 2224 /* NFSv4.0 */ 2225 *tl = txdr_unsigned(NFSCREATE_EXCLUSIVE); 2226 NFSM_BUILD(tl, u_int32_t *, NFSX_VERF); 2227 *tl++ = cverf.lval[0]; 2228 *tl = cverf.lval[1]; 2229 } 2230 } else { 2231 *tl = txdr_unsigned(NFSCREATE_UNCHECKED); 2232 nfscl_fillsattr(nd, vap, dvp, 0, 0); 2233 } 2234 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2235 *tl = txdr_unsigned(NFSV4OPEN_CLAIMNULL); 2236 (void) nfsm_strtom(nd, name, namelen); 2237 /* Get the new file's handle and attributes. */ 2238 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2239 *tl++ = txdr_unsigned(NFSV4OP_GETFH); 2240 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2241 NFSGETATTR_ATTRBIT(&attrbits); 2242 (void) nfsrv_putattrbit(nd, &attrbits); 2243 /* Get the directory's post-op attributes. */ 2244 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2245 *tl = txdr_unsigned(NFSV4OP_PUTFH); 2246 (void) nfsm_fhtom(nd, np->n_fhp->nfh_fh, np->n_fhp->nfh_len, 0); 2247 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2248 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2249 (void) nfsrv_putattrbit(nd, &attrbits); 2250 error = nfscl_request(nd, dvp, p, cred, dstuff); 2251 if (error) 2252 return (error); 2253 NFSCL_INCRSEQID(owp->nfsow_seqid, nd); 2254 if (nd->nd_repstat == 0) { 2255 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID + 2256 6 * NFSX_UNSIGNED); 2257 stateid.seqid = *tl++; 2258 stateid.other[0] = *tl++; 2259 stateid.other[1] = *tl++; 2260 stateid.other[2] = *tl; 2261 rflags = fxdr_unsigned(u_int32_t, *(tl + 6)); 2262 (void) nfsrv_getattrbits(nd, &attrbits, NULL, NULL); 2263 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2264 deleg = fxdr_unsigned(int, *tl); 2265 if (deleg == NFSV4OPEN_DELEGATEREAD || 2266 deleg == NFSV4OPEN_DELEGATEWRITE) { 2267 if (!(owp->nfsow_clp->nfsc_flags & 2268 NFSCLFLAGS_FIRSTDELEG)) 2269 owp->nfsow_clp->nfsc_flags |= 2270 (NFSCLFLAGS_FIRSTDELEG | NFSCLFLAGS_GOTDELEG); 2271 dp = malloc( 2272 sizeof (struct nfscldeleg) + NFSX_V4FHMAX, 2273 M_NFSCLDELEG, M_WAITOK); 2274 LIST_INIT(&dp->nfsdl_owner); 2275 LIST_INIT(&dp->nfsdl_lock); 2276 dp->nfsdl_clp = owp->nfsow_clp; 2277 newnfs_copyincred(cred, &dp->nfsdl_cred); 2278 nfscl_lockinit(&dp->nfsdl_rwlock); 2279 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID + 2280 NFSX_UNSIGNED); 2281 dp->nfsdl_stateid.seqid = *tl++; 2282 dp->nfsdl_stateid.other[0] = *tl++; 2283 dp->nfsdl_stateid.other[1] = *tl++; 2284 dp->nfsdl_stateid.other[2] = *tl++; 2285 ret = fxdr_unsigned(int, *tl); 2286 if (deleg == NFSV4OPEN_DELEGATEWRITE) { 2287 dp->nfsdl_flags = NFSCLDL_WRITE; 2288 /* 2289 * Indicates how much the file can grow. 2290 */ 2291 NFSM_DISSECT(tl, u_int32_t *, 2292 3 * NFSX_UNSIGNED); 2293 limitby = fxdr_unsigned(int, *tl++); 2294 switch (limitby) { 2295 case NFSV4OPEN_LIMITSIZE: 2296 dp->nfsdl_sizelimit = fxdr_hyper(tl); 2297 break; 2298 case NFSV4OPEN_LIMITBLOCKS: 2299 dp->nfsdl_sizelimit = 2300 fxdr_unsigned(u_int64_t, *tl++); 2301 dp->nfsdl_sizelimit *= 2302 fxdr_unsigned(u_int64_t, *tl); 2303 break; 2304 default: 2305 error = NFSERR_BADXDR; 2306 goto nfsmout; 2307 } 2308 } else { 2309 dp->nfsdl_flags = NFSCLDL_READ; 2310 } 2311 if (ret) 2312 dp->nfsdl_flags |= NFSCLDL_RECALL; 2313 error = nfsrv_dissectace(nd, &dp->nfsdl_ace, &ret, 2314 &acesize, p); 2315 if (error) 2316 goto nfsmout; 2317 } else if (deleg != NFSV4OPEN_DELEGATENONE) { 2318 error = NFSERR_BADXDR; 2319 goto nfsmout; 2320 } 2321 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp); 2322 if (error) 2323 goto nfsmout; 2324 /* Get rid of the PutFH and Getattr status values. */ 2325 NFSM_DISSECT(tl, u_int32_t *, 4 * NFSX_UNSIGNED); 2326 /* Load the directory attributes. */ 2327 error = nfsm_loadattr(nd, dnap); 2328 if (error) 2329 goto nfsmout; 2330 *dattrflagp = 1; 2331 if (dp != NULL && *attrflagp) { 2332 dp->nfsdl_change = nnap->na_filerev; 2333 dp->nfsdl_modtime = nnap->na_mtime; 2334 dp->nfsdl_flags |= NFSCLDL_MODTIMESET; 2335 } 2336 /* 2337 * We can now complete the Open state. 2338 */ 2339 nfhp = *nfhpp; 2340 if (dp != NULL) { 2341 dp->nfsdl_fhlen = nfhp->nfh_len; 2342 NFSBCOPY(nfhp->nfh_fh, dp->nfsdl_fh, nfhp->nfh_len); 2343 } 2344 /* 2345 * Get an Open structure that will be 2346 * attached to the OpenOwner, acquired already. 2347 */ 2348 error = nfscl_open(dvp, nfhp->nfh_fh, nfhp->nfh_len, 2349 (NFSV4OPEN_ACCESSWRITE | NFSV4OPEN_ACCESSREAD), 0, 2350 cred, p, NULL, &op, &newone, NULL, 0); 2351 if (error) 2352 goto nfsmout; 2353 op->nfso_stateid = stateid; 2354 newnfs_copyincred(cred, &op->nfso_cred); 2355 if ((rflags & NFSV4OPEN_RESULTCONFIRM)) { 2356 do { 2357 ret = nfsrpc_openconfirm(dvp, nfhp->nfh_fh, 2358 nfhp->nfh_len, op, cred, p); 2359 if (ret == NFSERR_DELAY) 2360 (void) nfs_catnap(PZERO, ret, "nfs_create"); 2361 } while (ret == NFSERR_DELAY); 2362 error = ret; 2363 } 2364 2365 /* 2366 * If the server is handing out delegations, but we didn't 2367 * get one because an OpenConfirm was required, try the 2368 * Open again, to get a delegation. This is a harmless no-op, 2369 * from a server's point of view. 2370 */ 2371 if ((rflags & NFSV4OPEN_RESULTCONFIRM) && 2372 (owp->nfsow_clp->nfsc_flags & NFSCLFLAGS_GOTDELEG) && 2373 !error && dp == NULL) { 2374 do { 2375 ret = nfsrpc_openrpc(VFSTONFS(dvp->v_mount), dvp, 2376 np->n_fhp->nfh_fh, np->n_fhp->nfh_len, 2377 nfhp->nfh_fh, nfhp->nfh_len, 2378 (NFSV4OPEN_ACCESSWRITE | NFSV4OPEN_ACCESSREAD), op, 2379 name, namelen, &dp, 0, 0x0, cred, p, 0, 1); 2380 if (ret == NFSERR_DELAY) 2381 (void) nfs_catnap(PZERO, ret, "nfs_crt2"); 2382 } while (ret == NFSERR_DELAY); 2383 if (ret) { 2384 if (dp != NULL) { 2385 free(dp, M_NFSCLDELEG); 2386 dp = NULL; 2387 } 2388 if (ret == NFSERR_STALECLIENTID || 2389 ret == NFSERR_STALEDONTRECOVER || 2390 ret == NFSERR_BADSESSION) 2391 error = ret; 2392 } 2393 } 2394 nfscl_openrelease(nmp, op, error, newone); 2395 *unlockedp = 1; 2396 } 2397 if (nd->nd_repstat != 0 && error == 0) 2398 error = nd->nd_repstat; 2399 if (error == NFSERR_STALECLIENTID) 2400 nfscl_initiate_recovery(owp->nfsow_clp); 2401 nfsmout: 2402 if (!error) 2403 *dpp = dp; 2404 else if (dp != NULL) 2405 free(dp, M_NFSCLDELEG); 2406 m_freem(nd->nd_mrep); 2407 return (error); 2408 } 2409 2410 /* 2411 * Nfs remove rpc 2412 */ 2413 int 2414 nfsrpc_remove(vnode_t dvp, char *name, int namelen, vnode_t vp, 2415 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap, int *dattrflagp, 2416 void *dstuff) 2417 { 2418 u_int32_t *tl; 2419 struct nfsrv_descript nfsd, *nd = &nfsd; 2420 struct nfsnode *np; 2421 struct nfsmount *nmp; 2422 nfsv4stateid_t dstateid; 2423 int error, ret = 0, i; 2424 2425 *dattrflagp = 0; 2426 if (namelen > NFS_MAXNAMLEN) 2427 return (ENAMETOOLONG); 2428 nmp = VFSTONFS(dvp->v_mount); 2429 tryagain: 2430 if (NFSHASNFSV4(nmp) && ret == 0) { 2431 ret = nfscl_removedeleg(vp, p, &dstateid); 2432 if (ret == 1) { 2433 NFSCL_REQSTART(nd, NFSPROC_RETDELEGREMOVE, vp); 2434 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID + 2435 NFSX_UNSIGNED); 2436 if (NFSHASNFSV4N(nmp)) 2437 *tl++ = 0; 2438 else 2439 *tl++ = dstateid.seqid; 2440 *tl++ = dstateid.other[0]; 2441 *tl++ = dstateid.other[1]; 2442 *tl++ = dstateid.other[2]; 2443 *tl = txdr_unsigned(NFSV4OP_PUTFH); 2444 np = VTONFS(dvp); 2445 (void) nfsm_fhtom(nd, np->n_fhp->nfh_fh, 2446 np->n_fhp->nfh_len, 0); 2447 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2448 *tl = txdr_unsigned(NFSV4OP_REMOVE); 2449 } 2450 } else { 2451 ret = 0; 2452 } 2453 if (ret == 0) 2454 NFSCL_REQSTART(nd, NFSPROC_REMOVE, dvp); 2455 (void) nfsm_strtom(nd, name, namelen); 2456 error = nfscl_request(nd, dvp, p, cred, dstuff); 2457 if (error) 2458 return (error); 2459 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) { 2460 /* For NFSv4, parse out any Delereturn replies. */ 2461 if (ret > 0 && nd->nd_repstat != 0 && 2462 (nd->nd_flag & ND_NOMOREDATA)) { 2463 /* 2464 * If the Delegreturn failed, try again without 2465 * it. The server will Recall, as required. 2466 */ 2467 m_freem(nd->nd_mrep); 2468 goto tryagain; 2469 } 2470 for (i = 0; i < (ret * 2); i++) { 2471 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == 2472 ND_NFSV4) { 2473 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2474 if (*(tl + 1)) 2475 nd->nd_flag |= ND_NOMOREDATA; 2476 } 2477 } 2478 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 2479 } 2480 if (nd->nd_repstat && !error) 2481 error = nd->nd_repstat; 2482 nfsmout: 2483 m_freem(nd->nd_mrep); 2484 return (error); 2485 } 2486 2487 /* 2488 * Do an nfs rename rpc. 2489 */ 2490 int 2491 nfsrpc_rename(vnode_t fdvp, vnode_t fvp, char *fnameptr, int fnamelen, 2492 vnode_t tdvp, vnode_t tvp, char *tnameptr, int tnamelen, struct ucred *cred, 2493 NFSPROC_T *p, struct nfsvattr *fnap, struct nfsvattr *tnap, 2494 int *fattrflagp, int *tattrflagp, void *fstuff, void *tstuff) 2495 { 2496 u_int32_t *tl; 2497 struct nfsrv_descript nfsd, *nd = &nfsd; 2498 struct nfsmount *nmp; 2499 struct nfsnode *np; 2500 nfsattrbit_t attrbits; 2501 nfsv4stateid_t fdstateid, tdstateid; 2502 int error = 0, ret = 0, gottd = 0, gotfd = 0, i; 2503 2504 *fattrflagp = 0; 2505 *tattrflagp = 0; 2506 nmp = VFSTONFS(fdvp->v_mount); 2507 if (fnamelen > NFS_MAXNAMLEN || tnamelen > NFS_MAXNAMLEN) 2508 return (ENAMETOOLONG); 2509 tryagain: 2510 if (NFSHASNFSV4(nmp) && ret == 0) { 2511 ret = nfscl_renamedeleg(fvp, &fdstateid, &gotfd, tvp, 2512 &tdstateid, &gottd, p); 2513 if (gotfd && gottd) { 2514 NFSCL_REQSTART(nd, NFSPROC_RETDELEGRENAME2, fvp); 2515 } else if (gotfd) { 2516 NFSCL_REQSTART(nd, NFSPROC_RETDELEGRENAME1, fvp); 2517 } else if (gottd) { 2518 NFSCL_REQSTART(nd, NFSPROC_RETDELEGRENAME1, tvp); 2519 } 2520 if (gotfd) { 2521 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID); 2522 if (NFSHASNFSV4N(nmp)) 2523 *tl++ = 0; 2524 else 2525 *tl++ = fdstateid.seqid; 2526 *tl++ = fdstateid.other[0]; 2527 *tl++ = fdstateid.other[1]; 2528 *tl = fdstateid.other[2]; 2529 if (gottd) { 2530 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2531 *tl = txdr_unsigned(NFSV4OP_PUTFH); 2532 np = VTONFS(tvp); 2533 (void) nfsm_fhtom(nd, np->n_fhp->nfh_fh, 2534 np->n_fhp->nfh_len, 0); 2535 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2536 *tl = txdr_unsigned(NFSV4OP_DELEGRETURN); 2537 } 2538 } 2539 if (gottd) { 2540 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID); 2541 if (NFSHASNFSV4N(nmp)) 2542 *tl++ = 0; 2543 else 2544 *tl++ = tdstateid.seqid; 2545 *tl++ = tdstateid.other[0]; 2546 *tl++ = tdstateid.other[1]; 2547 *tl = tdstateid.other[2]; 2548 } 2549 if (ret > 0) { 2550 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2551 *tl = txdr_unsigned(NFSV4OP_PUTFH); 2552 np = VTONFS(fdvp); 2553 (void) nfsm_fhtom(nd, np->n_fhp->nfh_fh, 2554 np->n_fhp->nfh_len, 0); 2555 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2556 *tl = txdr_unsigned(NFSV4OP_SAVEFH); 2557 } 2558 } else { 2559 ret = 0; 2560 } 2561 if (ret == 0) 2562 NFSCL_REQSTART(nd, NFSPROC_RENAME, fdvp); 2563 if (nd->nd_flag & ND_NFSV4) { 2564 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2565 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2566 NFSWCCATTR_ATTRBIT(&attrbits); 2567 (void) nfsrv_putattrbit(nd, &attrbits); 2568 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2569 *tl = txdr_unsigned(NFSV4OP_PUTFH); 2570 (void) nfsm_fhtom(nd, VTONFS(tdvp)->n_fhp->nfh_fh, 2571 VTONFS(tdvp)->n_fhp->nfh_len, 0); 2572 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2573 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2574 (void) nfsrv_putattrbit(nd, &attrbits); 2575 nd->nd_flag |= ND_V4WCCATTR; 2576 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2577 *tl = txdr_unsigned(NFSV4OP_RENAME); 2578 } 2579 (void) nfsm_strtom(nd, fnameptr, fnamelen); 2580 if (!(nd->nd_flag & ND_NFSV4)) 2581 (void) nfsm_fhtom(nd, VTONFS(tdvp)->n_fhp->nfh_fh, 2582 VTONFS(tdvp)->n_fhp->nfh_len, 0); 2583 (void) nfsm_strtom(nd, tnameptr, tnamelen); 2584 error = nfscl_request(nd, fdvp, p, cred, fstuff); 2585 if (error) 2586 return (error); 2587 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) { 2588 /* For NFSv4, parse out any Delereturn replies. */ 2589 if (ret > 0 && nd->nd_repstat != 0 && 2590 (nd->nd_flag & ND_NOMOREDATA)) { 2591 /* 2592 * If the Delegreturn failed, try again without 2593 * it. The server will Recall, as required. 2594 */ 2595 m_freem(nd->nd_mrep); 2596 goto tryagain; 2597 } 2598 for (i = 0; i < (ret * 2); i++) { 2599 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == 2600 ND_NFSV4) { 2601 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2602 if (*(tl + 1)) { 2603 if (i == 0 && ret > 1) { 2604 /* 2605 * If the Delegreturn failed, try again 2606 * without it. The server will Recall, as 2607 * required. 2608 * If ret > 1, the first iteration of this 2609 * loop is the second DelegReturn result. 2610 */ 2611 m_freem(nd->nd_mrep); 2612 goto tryagain; 2613 } else { 2614 nd->nd_flag |= ND_NOMOREDATA; 2615 } 2616 } 2617 } 2618 } 2619 /* Now, the first wcc attribute reply. */ 2620 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == ND_NFSV4) { 2621 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2622 if (*(tl + 1)) 2623 nd->nd_flag |= ND_NOMOREDATA; 2624 } 2625 error = nfscl_wcc_data(nd, fdvp, fnap, fattrflagp, NULL, 2626 fstuff); 2627 /* and the second wcc attribute reply. */ 2628 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == ND_NFSV4 && 2629 !error) { 2630 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2631 if (*(tl + 1)) 2632 nd->nd_flag |= ND_NOMOREDATA; 2633 } 2634 if (!error) 2635 error = nfscl_wcc_data(nd, tdvp, tnap, tattrflagp, 2636 NULL, tstuff); 2637 } 2638 if (nd->nd_repstat && !error) 2639 error = nd->nd_repstat; 2640 nfsmout: 2641 m_freem(nd->nd_mrep); 2642 return (error); 2643 } 2644 2645 /* 2646 * nfs hard link create rpc 2647 */ 2648 int 2649 nfsrpc_link(vnode_t dvp, vnode_t vp, char *name, int namelen, 2650 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap, 2651 struct nfsvattr *nap, int *attrflagp, int *dattrflagp, void *dstuff) 2652 { 2653 u_int32_t *tl; 2654 struct nfsrv_descript nfsd, *nd = &nfsd; 2655 nfsattrbit_t attrbits; 2656 int error = 0; 2657 2658 *attrflagp = 0; 2659 *dattrflagp = 0; 2660 if (namelen > NFS_MAXNAMLEN) 2661 return (ENAMETOOLONG); 2662 NFSCL_REQSTART(nd, NFSPROC_LINK, vp); 2663 if (nd->nd_flag & ND_NFSV4) { 2664 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2665 *tl = txdr_unsigned(NFSV4OP_PUTFH); 2666 } 2667 (void) nfsm_fhtom(nd, VTONFS(dvp)->n_fhp->nfh_fh, 2668 VTONFS(dvp)->n_fhp->nfh_len, 0); 2669 if (nd->nd_flag & ND_NFSV4) { 2670 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2671 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2672 NFSWCCATTR_ATTRBIT(&attrbits); 2673 (void) nfsrv_putattrbit(nd, &attrbits); 2674 nd->nd_flag |= ND_V4WCCATTR; 2675 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2676 *tl = txdr_unsigned(NFSV4OP_LINK); 2677 } 2678 (void) nfsm_strtom(nd, name, namelen); 2679 error = nfscl_request(nd, vp, p, cred, dstuff); 2680 if (error) 2681 return (error); 2682 if (nd->nd_flag & ND_NFSV3) { 2683 error = nfscl_postop_attr(nd, nap, attrflagp, dstuff); 2684 if (!error) 2685 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, 2686 NULL, dstuff); 2687 } else if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == ND_NFSV4) { 2688 /* 2689 * First, parse out the PutFH and Getattr result. 2690 */ 2691 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2692 if (!(*(tl + 1))) 2693 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2694 if (*(tl + 1)) 2695 nd->nd_flag |= ND_NOMOREDATA; 2696 /* 2697 * Get the pre-op attributes. 2698 */ 2699 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 2700 } 2701 if (nd->nd_repstat && !error) 2702 error = nd->nd_repstat; 2703 nfsmout: 2704 m_freem(nd->nd_mrep); 2705 return (error); 2706 } 2707 2708 /* 2709 * nfs symbolic link create rpc 2710 */ 2711 int 2712 nfsrpc_symlink(vnode_t dvp, char *name, int namelen, const char *target, 2713 struct vattr *vap, struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap, 2714 struct nfsvattr *nnap, struct nfsfh **nfhpp, int *attrflagp, 2715 int *dattrflagp, void *dstuff) 2716 { 2717 u_int32_t *tl; 2718 struct nfsrv_descript nfsd, *nd = &nfsd; 2719 struct nfsmount *nmp; 2720 int slen, error = 0; 2721 2722 *nfhpp = NULL; 2723 *attrflagp = 0; 2724 *dattrflagp = 0; 2725 nmp = VFSTONFS(dvp->v_mount); 2726 slen = strlen(target); 2727 if (slen > NFS_MAXPATHLEN || namelen > NFS_MAXNAMLEN) 2728 return (ENAMETOOLONG); 2729 NFSCL_REQSTART(nd, NFSPROC_SYMLINK, dvp); 2730 if (nd->nd_flag & ND_NFSV4) { 2731 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2732 *tl = txdr_unsigned(NFLNK); 2733 (void) nfsm_strtom(nd, target, slen); 2734 } 2735 (void) nfsm_strtom(nd, name, namelen); 2736 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) 2737 nfscl_fillsattr(nd, vap, dvp, 0, 0); 2738 if (!(nd->nd_flag & ND_NFSV4)) 2739 (void) nfsm_strtom(nd, target, slen); 2740 if (nd->nd_flag & ND_NFSV2) 2741 nfscl_fillsattr(nd, vap, dvp, NFSSATTR_SIZENEG1, 0); 2742 error = nfscl_request(nd, dvp, p, cred, dstuff); 2743 if (error) 2744 return (error); 2745 if (nd->nd_flag & ND_NFSV4) 2746 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 2747 if ((nd->nd_flag & ND_NFSV3) && !error) { 2748 if (!nd->nd_repstat) 2749 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp); 2750 if (!error) 2751 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, 2752 NULL, dstuff); 2753 } 2754 if (nd->nd_repstat && !error) 2755 error = nd->nd_repstat; 2756 m_freem(nd->nd_mrep); 2757 /* 2758 * Kludge: Map EEXIST => 0 assuming that it is a reply to a retry. 2759 * Only do this if vfs.nfs.ignore_eexist is set. 2760 * Never do this for NFSv4.1 or later minor versions, since sessions 2761 * should guarantee "exactly once" RPC semantics. 2762 */ 2763 if (error == EEXIST && nfsignore_eexist != 0 && (!NFSHASNFSV4(nmp) || 2764 nmp->nm_minorvers == 0)) 2765 error = 0; 2766 return (error); 2767 } 2768 2769 /* 2770 * nfs make dir rpc 2771 */ 2772 int 2773 nfsrpc_mkdir(vnode_t dvp, char *name, int namelen, struct vattr *vap, 2774 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap, 2775 struct nfsvattr *nnap, struct nfsfh **nfhpp, int *attrflagp, 2776 int *dattrflagp, void *dstuff) 2777 { 2778 u_int32_t *tl; 2779 struct nfsrv_descript nfsd, *nd = &nfsd; 2780 nfsattrbit_t attrbits; 2781 int error = 0; 2782 struct nfsfh *fhp; 2783 struct nfsmount *nmp; 2784 2785 *nfhpp = NULL; 2786 *attrflagp = 0; 2787 *dattrflagp = 0; 2788 nmp = VFSTONFS(dvp->v_mount); 2789 fhp = VTONFS(dvp)->n_fhp; 2790 if (namelen > NFS_MAXNAMLEN) 2791 return (ENAMETOOLONG); 2792 NFSCL_REQSTART(nd, NFSPROC_MKDIR, dvp); 2793 if (nd->nd_flag & ND_NFSV4) { 2794 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2795 *tl = txdr_unsigned(NFDIR); 2796 } 2797 (void) nfsm_strtom(nd, name, namelen); 2798 nfscl_fillsattr(nd, vap, dvp, NFSSATTR_SIZENEG1, 0); 2799 if (nd->nd_flag & ND_NFSV4) { 2800 NFSGETATTR_ATTRBIT(&attrbits); 2801 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2802 *tl++ = txdr_unsigned(NFSV4OP_GETFH); 2803 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2804 (void) nfsrv_putattrbit(nd, &attrbits); 2805 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2806 *tl = txdr_unsigned(NFSV4OP_PUTFH); 2807 (void) nfsm_fhtom(nd, fhp->nfh_fh, fhp->nfh_len, 0); 2808 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2809 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2810 (void) nfsrv_putattrbit(nd, &attrbits); 2811 } 2812 error = nfscl_request(nd, dvp, p, cred, dstuff); 2813 if (error) 2814 return (error); 2815 if (nd->nd_flag & ND_NFSV4) 2816 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 2817 if (!nd->nd_repstat && !error) { 2818 if (nd->nd_flag & ND_NFSV4) { 2819 NFSM_DISSECT(tl, u_int32_t *, 5 * NFSX_UNSIGNED); 2820 error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL); 2821 } 2822 if (!error) 2823 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp); 2824 if (error == 0 && (nd->nd_flag & ND_NFSV4) != 0) { 2825 /* Get rid of the PutFH and Getattr status values. */ 2826 NFSM_DISSECT(tl, u_int32_t *, 4 * NFSX_UNSIGNED); 2827 /* Load the directory attributes. */ 2828 error = nfsm_loadattr(nd, dnap); 2829 if (error == 0) 2830 *dattrflagp = 1; 2831 } 2832 } 2833 if ((nd->nd_flag & ND_NFSV3) && !error) 2834 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 2835 if (nd->nd_repstat && !error) 2836 error = nd->nd_repstat; 2837 nfsmout: 2838 m_freem(nd->nd_mrep); 2839 /* 2840 * Kludge: Map EEXIST => 0 assuming that it is a reply to a retry. 2841 * Only do this if vfs.nfs.ignore_eexist is set. 2842 * Never do this for NFSv4.1 or later minor versions, since sessions 2843 * should guarantee "exactly once" RPC semantics. 2844 */ 2845 if (error == EEXIST && nfsignore_eexist != 0 && (!NFSHASNFSV4(nmp) || 2846 nmp->nm_minorvers == 0)) 2847 error = 0; 2848 return (error); 2849 } 2850 2851 /* 2852 * nfs remove directory call 2853 */ 2854 int 2855 nfsrpc_rmdir(vnode_t dvp, char *name, int namelen, struct ucred *cred, 2856 NFSPROC_T *p, struct nfsvattr *dnap, int *dattrflagp, void *dstuff) 2857 { 2858 struct nfsrv_descript nfsd, *nd = &nfsd; 2859 int error = 0; 2860 2861 *dattrflagp = 0; 2862 if (namelen > NFS_MAXNAMLEN) 2863 return (ENAMETOOLONG); 2864 NFSCL_REQSTART(nd, NFSPROC_RMDIR, dvp); 2865 (void) nfsm_strtom(nd, name, namelen); 2866 error = nfscl_request(nd, dvp, p, cred, dstuff); 2867 if (error) 2868 return (error); 2869 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) 2870 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 2871 if (nd->nd_repstat && !error) 2872 error = nd->nd_repstat; 2873 m_freem(nd->nd_mrep); 2874 /* 2875 * Kludge: Map ENOENT => 0 assuming that you have a reply to a retry. 2876 */ 2877 if (error == ENOENT) 2878 error = 0; 2879 return (error); 2880 } 2881 2882 /* 2883 * Readdir rpc. 2884 * Always returns with either uio_resid unchanged, if you are at the 2885 * end of the directory, or uio_resid == 0, with all DIRBLKSIZ chunks 2886 * filled in. 2887 * I felt this would allow caching of directory blocks more easily 2888 * than returning a pertially filled block. 2889 * Directory offset cookies: 2890 * Oh my, what to do with them... 2891 * I can think of three ways to deal with them: 2892 * 1 - have the layer above these RPCs maintain a map between logical 2893 * directory byte offsets and the NFS directory offset cookies 2894 * 2 - pass the opaque directory offset cookies up into userland 2895 * and let the libc functions deal with them, via the system call 2896 * 3 - return them to userland in the "struct dirent", so future versions 2897 * of libc can use them and do whatever is necessary to make things work 2898 * above these rpc calls, in the meantime 2899 * For now, I do #3 by "hiding" the directory offset cookies after the 2900 * d_name field in struct dirent. This is space inside d_reclen that 2901 * will be ignored by anything that doesn't know about them. 2902 * The directory offset cookies are filled in as the last 8 bytes of 2903 * each directory entry, after d_name. Someday, the userland libc 2904 * functions may be able to use these. In the meantime, it satisfies 2905 * OpenBSD's requirements for cookies being returned. 2906 * If expects the directory offset cookie for the read to be in uio_offset 2907 * and returns the one for the next entry after this directory block in 2908 * there, as well. 2909 */ 2910 int 2911 nfsrpc_readdir(vnode_t vp, struct uio *uiop, nfsuint64 *cookiep, 2912 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, 2913 int *eofp, void *stuff) 2914 { 2915 int len, left; 2916 struct dirent *dp = NULL; 2917 u_int32_t *tl; 2918 nfsquad_t cookie, ncookie; 2919 struct nfsmount *nmp = VFSTONFS(vp->v_mount); 2920 struct nfsnode *dnp = VTONFS(vp); 2921 struct nfsvattr nfsva; 2922 struct nfsrv_descript nfsd, *nd = &nfsd; 2923 int error = 0, tlen, more_dirs = 1, blksiz = 0, bigenough = 1; 2924 int reqsize, tryformoredirs = 1, readsize, eof = 0, gotmnton = 0; 2925 u_int64_t dotfileid, dotdotfileid = 0, fakefileno = UINT64_MAX; 2926 char *cp; 2927 nfsattrbit_t attrbits, dattrbits; 2928 u_int32_t rderr, *tl2 = NULL; 2929 size_t tresid; 2930 2931 KASSERT(uiop->uio_iovcnt == 1 && 2932 (uiop->uio_resid & (DIRBLKSIZ - 1)) == 0, 2933 ("nfs readdirrpc bad uio")); 2934 ncookie.lval[0] = ncookie.lval[1] = 0; 2935 /* 2936 * There is no point in reading a lot more than uio_resid, however 2937 * adding one additional DIRBLKSIZ makes sense. Since uio_resid 2938 * and nm_readdirsize are both exact multiples of DIRBLKSIZ, this 2939 * will never make readsize > nm_readdirsize. 2940 */ 2941 readsize = nmp->nm_readdirsize; 2942 if (readsize > uiop->uio_resid) 2943 readsize = uiop->uio_resid + DIRBLKSIZ; 2944 2945 *attrflagp = 0; 2946 if (eofp) 2947 *eofp = 0; 2948 tresid = uiop->uio_resid; 2949 cookie.lval[0] = cookiep->nfsuquad[0]; 2950 cookie.lval[1] = cookiep->nfsuquad[1]; 2951 nd->nd_mrep = NULL; 2952 2953 /* 2954 * For NFSv4, first create the "." and ".." entries. 2955 */ 2956 if (NFSHASNFSV4(nmp)) { 2957 reqsize = 6 * NFSX_UNSIGNED; 2958 NFSGETATTR_ATTRBIT(&dattrbits); 2959 NFSZERO_ATTRBIT(&attrbits); 2960 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_FILEID); 2961 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_TYPE); 2962 if (NFSISSET_ATTRBIT(&dnp->n_vattr.na_suppattr, 2963 NFSATTRBIT_MOUNTEDONFILEID)) { 2964 NFSSETBIT_ATTRBIT(&attrbits, 2965 NFSATTRBIT_MOUNTEDONFILEID); 2966 gotmnton = 1; 2967 } else { 2968 /* 2969 * Must fake it. Use the fileno, except when the 2970 * fsid is != to that of the directory. For that 2971 * case, generate a fake fileno that is not the same. 2972 */ 2973 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_FSID); 2974 gotmnton = 0; 2975 } 2976 2977 /* 2978 * Joy, oh joy. For V4 we get to hand craft '.' and '..'. 2979 */ 2980 if (uiop->uio_offset == 0) { 2981 NFSCL_REQSTART(nd, NFSPROC_LOOKUPP, vp); 2982 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2983 *tl++ = txdr_unsigned(NFSV4OP_GETFH); 2984 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2985 (void) nfsrv_putattrbit(nd, &attrbits); 2986 error = nfscl_request(nd, vp, p, cred, stuff); 2987 if (error) 2988 return (error); 2989 dotfileid = 0; /* Fake out the compiler. */ 2990 if ((nd->nd_flag & ND_NOMOREDATA) == 0) { 2991 error = nfsm_loadattr(nd, &nfsva); 2992 if (error != 0) 2993 goto nfsmout; 2994 dotfileid = nfsva.na_fileid; 2995 } 2996 if (nd->nd_repstat == 0) { 2997 NFSM_DISSECT(tl, u_int32_t *, 5 * NFSX_UNSIGNED); 2998 len = fxdr_unsigned(int, *(tl + 4)); 2999 if (len > 0 && len <= NFSX_V4FHMAX) 3000 error = nfsm_advance(nd, NFSM_RNDUP(len), -1); 3001 else 3002 error = EPERM; 3003 if (!error) { 3004 NFSM_DISSECT(tl, u_int32_t *, 2*NFSX_UNSIGNED); 3005 nfsva.na_mntonfileno = UINT64_MAX; 3006 error = nfsv4_loadattr(nd, NULL, &nfsva, NULL, 3007 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0, 3008 NULL, NULL, NULL, p, cred); 3009 if (error) { 3010 dotdotfileid = dotfileid; 3011 } else if (gotmnton) { 3012 if (nfsva.na_mntonfileno != UINT64_MAX) 3013 dotdotfileid = nfsva.na_mntonfileno; 3014 else 3015 dotdotfileid = nfsva.na_fileid; 3016 } else if (nfsva.na_filesid[0] == 3017 dnp->n_vattr.na_filesid[0] && 3018 nfsva.na_filesid[1] == 3019 dnp->n_vattr.na_filesid[1]) { 3020 dotdotfileid = nfsva.na_fileid; 3021 } else { 3022 do { 3023 fakefileno--; 3024 } while (fakefileno == 3025 nfsva.na_fileid); 3026 dotdotfileid = fakefileno; 3027 } 3028 } 3029 } else if (nd->nd_repstat == NFSERR_NOENT) { 3030 /* 3031 * Lookupp returns NFSERR_NOENT when we are 3032 * at the root, so just use the current dir. 3033 */ 3034 nd->nd_repstat = 0; 3035 dotdotfileid = dotfileid; 3036 } else { 3037 error = nd->nd_repstat; 3038 } 3039 m_freem(nd->nd_mrep); 3040 if (error) 3041 return (error); 3042 nd->nd_mrep = NULL; 3043 dp = (struct dirent *)uiop->uio_iov->iov_base; 3044 dp->d_pad0 = dp->d_pad1 = 0; 3045 dp->d_off = 0; 3046 dp->d_type = DT_DIR; 3047 dp->d_fileno = dotfileid; 3048 dp->d_namlen = 1; 3049 *((uint64_t *)dp->d_name) = 0; /* Zero pad it. */ 3050 dp->d_name[0] = '.'; 3051 dp->d_reclen = _GENERIC_DIRSIZ(dp) + NFSX_HYPER; 3052 /* 3053 * Just make these offset cookie 0. 3054 */ 3055 tl = (u_int32_t *)&dp->d_name[8]; 3056 *tl++ = 0; 3057 *tl = 0; 3058 blksiz += dp->d_reclen; 3059 uiop->uio_resid -= dp->d_reclen; 3060 uiop->uio_offset += dp->d_reclen; 3061 uiop->uio_iov->iov_base = 3062 (char *)uiop->uio_iov->iov_base + dp->d_reclen; 3063 uiop->uio_iov->iov_len -= dp->d_reclen; 3064 dp = (struct dirent *)uiop->uio_iov->iov_base; 3065 dp->d_pad0 = dp->d_pad1 = 0; 3066 dp->d_off = 0; 3067 dp->d_type = DT_DIR; 3068 dp->d_fileno = dotdotfileid; 3069 dp->d_namlen = 2; 3070 *((uint64_t *)dp->d_name) = 0; 3071 dp->d_name[0] = '.'; 3072 dp->d_name[1] = '.'; 3073 dp->d_reclen = _GENERIC_DIRSIZ(dp) + NFSX_HYPER; 3074 /* 3075 * Just make these offset cookie 0. 3076 */ 3077 tl = (u_int32_t *)&dp->d_name[8]; 3078 *tl++ = 0; 3079 *tl = 0; 3080 blksiz += dp->d_reclen; 3081 uiop->uio_resid -= dp->d_reclen; 3082 uiop->uio_offset += dp->d_reclen; 3083 uiop->uio_iov->iov_base = 3084 (char *)uiop->uio_iov->iov_base + dp->d_reclen; 3085 uiop->uio_iov->iov_len -= dp->d_reclen; 3086 } 3087 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_RDATTRERROR); 3088 } else { 3089 reqsize = 5 * NFSX_UNSIGNED; 3090 } 3091 3092 3093 /* 3094 * Loop around doing readdir rpc's of size readsize. 3095 * The stopping criteria is EOF or buffer full. 3096 */ 3097 while (more_dirs && bigenough) { 3098 *attrflagp = 0; 3099 NFSCL_REQSTART(nd, NFSPROC_READDIR, vp); 3100 if (nd->nd_flag & ND_NFSV2) { 3101 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 3102 *tl++ = cookie.lval[1]; 3103 *tl = txdr_unsigned(readsize); 3104 } else { 3105 NFSM_BUILD(tl, u_int32_t *, reqsize); 3106 *tl++ = cookie.lval[0]; 3107 *tl++ = cookie.lval[1]; 3108 if (cookie.qval == 0) { 3109 *tl++ = 0; 3110 *tl++ = 0; 3111 } else { 3112 NFSLOCKNODE(dnp); 3113 *tl++ = dnp->n_cookieverf.nfsuquad[0]; 3114 *tl++ = dnp->n_cookieverf.nfsuquad[1]; 3115 NFSUNLOCKNODE(dnp); 3116 } 3117 if (nd->nd_flag & ND_NFSV4) { 3118 *tl++ = txdr_unsigned(readsize); 3119 *tl = txdr_unsigned(readsize); 3120 (void) nfsrv_putattrbit(nd, &attrbits); 3121 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 3122 *tl = txdr_unsigned(NFSV4OP_GETATTR); 3123 (void) nfsrv_putattrbit(nd, &dattrbits); 3124 } else { 3125 *tl = txdr_unsigned(readsize); 3126 } 3127 } 3128 error = nfscl_request(nd, vp, p, cred, stuff); 3129 if (error) 3130 return (error); 3131 if (!(nd->nd_flag & ND_NFSV2)) { 3132 if (nd->nd_flag & ND_NFSV3) 3133 error = nfscl_postop_attr(nd, nap, attrflagp, 3134 stuff); 3135 if (!nd->nd_repstat && !error) { 3136 NFSM_DISSECT(tl, u_int32_t *, NFSX_HYPER); 3137 NFSLOCKNODE(dnp); 3138 dnp->n_cookieverf.nfsuquad[0] = *tl++; 3139 dnp->n_cookieverf.nfsuquad[1] = *tl; 3140 NFSUNLOCKNODE(dnp); 3141 } 3142 } 3143 if (nd->nd_repstat || error) { 3144 if (!error) 3145 error = nd->nd_repstat; 3146 goto nfsmout; 3147 } 3148 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 3149 more_dirs = fxdr_unsigned(int, *tl); 3150 if (!more_dirs) 3151 tryformoredirs = 0; 3152 3153 /* loop through the dir entries, doctoring them to 4bsd form */ 3154 while (more_dirs && bigenough) { 3155 if (nd->nd_flag & ND_NFSV4) { 3156 NFSM_DISSECT(tl, u_int32_t *, 3*NFSX_UNSIGNED); 3157 ncookie.lval[0] = *tl++; 3158 ncookie.lval[1] = *tl++; 3159 len = fxdr_unsigned(int, *tl); 3160 } else if (nd->nd_flag & ND_NFSV3) { 3161 NFSM_DISSECT(tl, u_int32_t *, 3*NFSX_UNSIGNED); 3162 nfsva.na_fileid = fxdr_hyper(tl); 3163 tl += 2; 3164 len = fxdr_unsigned(int, *tl); 3165 } else { 3166 NFSM_DISSECT(tl, u_int32_t *, 2*NFSX_UNSIGNED); 3167 nfsva.na_fileid = fxdr_unsigned(uint64_t, 3168 *tl++); 3169 len = fxdr_unsigned(int, *tl); 3170 } 3171 if (len <= 0 || len > NFS_MAXNAMLEN) { 3172 error = EBADRPC; 3173 goto nfsmout; 3174 } 3175 tlen = roundup2(len, 8); 3176 if (tlen == len) 3177 tlen += 8; /* To ensure null termination. */ 3178 left = DIRBLKSIZ - blksiz; 3179 if (_GENERIC_DIRLEN(len) + NFSX_HYPER > left) { 3180 NFSBZERO(uiop->uio_iov->iov_base, left); 3181 dp->d_reclen += left; 3182 uiop->uio_iov->iov_base = 3183 (char *)uiop->uio_iov->iov_base + left; 3184 uiop->uio_iov->iov_len -= left; 3185 uiop->uio_resid -= left; 3186 uiop->uio_offset += left; 3187 blksiz = 0; 3188 } 3189 if (_GENERIC_DIRLEN(len) + NFSX_HYPER > 3190 uiop->uio_resid) 3191 bigenough = 0; 3192 if (bigenough) { 3193 dp = (struct dirent *)uiop->uio_iov->iov_base; 3194 dp->d_pad0 = dp->d_pad1 = 0; 3195 dp->d_off = 0; 3196 dp->d_namlen = len; 3197 dp->d_reclen = _GENERIC_DIRLEN(len) + 3198 NFSX_HYPER; 3199 dp->d_type = DT_UNKNOWN; 3200 blksiz += dp->d_reclen; 3201 if (blksiz == DIRBLKSIZ) 3202 blksiz = 0; 3203 uiop->uio_resid -= DIRHDSIZ; 3204 uiop->uio_offset += DIRHDSIZ; 3205 uiop->uio_iov->iov_base = 3206 (char *)uiop->uio_iov->iov_base + DIRHDSIZ; 3207 uiop->uio_iov->iov_len -= DIRHDSIZ; 3208 error = nfsm_mbufuio(nd, uiop, len); 3209 if (error) 3210 goto nfsmout; 3211 cp = uiop->uio_iov->iov_base; 3212 tlen -= len; 3213 NFSBZERO(cp, tlen); 3214 cp += tlen; /* points to cookie storage */ 3215 tl2 = (u_int32_t *)cp; 3216 uiop->uio_iov->iov_base = 3217 (char *)uiop->uio_iov->iov_base + tlen + 3218 NFSX_HYPER; 3219 uiop->uio_iov->iov_len -= tlen + NFSX_HYPER; 3220 uiop->uio_resid -= tlen + NFSX_HYPER; 3221 uiop->uio_offset += (tlen + NFSX_HYPER); 3222 } else { 3223 error = nfsm_advance(nd, NFSM_RNDUP(len), -1); 3224 if (error) 3225 goto nfsmout; 3226 } 3227 if (nd->nd_flag & ND_NFSV4) { 3228 rderr = 0; 3229 nfsva.na_mntonfileno = UINT64_MAX; 3230 error = nfsv4_loadattr(nd, NULL, &nfsva, NULL, 3231 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0, 3232 NULL, NULL, &rderr, p, cred); 3233 if (error) 3234 goto nfsmout; 3235 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 3236 } else if (nd->nd_flag & ND_NFSV3) { 3237 NFSM_DISSECT(tl, u_int32_t *, 3*NFSX_UNSIGNED); 3238 ncookie.lval[0] = *tl++; 3239 ncookie.lval[1] = *tl++; 3240 } else { 3241 NFSM_DISSECT(tl, u_int32_t *, 2*NFSX_UNSIGNED); 3242 ncookie.lval[0] = 0; 3243 ncookie.lval[1] = *tl++; 3244 } 3245 if (bigenough) { 3246 if (nd->nd_flag & ND_NFSV4) { 3247 if (rderr) { 3248 dp->d_fileno = 0; 3249 } else { 3250 if (gotmnton) { 3251 if (nfsva.na_mntonfileno != UINT64_MAX) 3252 dp->d_fileno = nfsva.na_mntonfileno; 3253 else 3254 dp->d_fileno = nfsva.na_fileid; 3255 } else if (nfsva.na_filesid[0] == 3256 dnp->n_vattr.na_filesid[0] && 3257 nfsva.na_filesid[1] == 3258 dnp->n_vattr.na_filesid[1]) { 3259 dp->d_fileno = nfsva.na_fileid; 3260 } else { 3261 do { 3262 fakefileno--; 3263 } while (fakefileno == 3264 nfsva.na_fileid); 3265 dp->d_fileno = fakefileno; 3266 } 3267 dp->d_type = vtonfs_dtype(nfsva.na_type); 3268 } 3269 } else { 3270 dp->d_fileno = nfsva.na_fileid; 3271 } 3272 *tl2++ = cookiep->nfsuquad[0] = cookie.lval[0] = 3273 ncookie.lval[0]; 3274 *tl2 = cookiep->nfsuquad[1] = cookie.lval[1] = 3275 ncookie.lval[1]; 3276 } 3277 more_dirs = fxdr_unsigned(int, *tl); 3278 } 3279 /* 3280 * If at end of rpc data, get the eof boolean 3281 */ 3282 if (!more_dirs) { 3283 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 3284 eof = fxdr_unsigned(int, *tl); 3285 if (tryformoredirs) 3286 more_dirs = !eof; 3287 if (nd->nd_flag & ND_NFSV4) { 3288 error = nfscl_postop_attr(nd, nap, attrflagp, 3289 stuff); 3290 if (error) 3291 goto nfsmout; 3292 } 3293 } 3294 m_freem(nd->nd_mrep); 3295 nd->nd_mrep = NULL; 3296 } 3297 /* 3298 * Fill last record, iff any, out to a multiple of DIRBLKSIZ 3299 * by increasing d_reclen for the last record. 3300 */ 3301 if (blksiz > 0) { 3302 left = DIRBLKSIZ - blksiz; 3303 NFSBZERO(uiop->uio_iov->iov_base, left); 3304 dp->d_reclen += left; 3305 uiop->uio_iov->iov_base = (char *)uiop->uio_iov->iov_base + 3306 left; 3307 uiop->uio_iov->iov_len -= left; 3308 uiop->uio_resid -= left; 3309 uiop->uio_offset += left; 3310 } 3311 3312 /* 3313 * If returning no data, assume end of file. 3314 * If not bigenough, return not end of file, since you aren't 3315 * returning all the data 3316 * Otherwise, return the eof flag from the server. 3317 */ 3318 if (eofp) { 3319 if (tresid == ((size_t)(uiop->uio_resid))) 3320 *eofp = 1; 3321 else if (!bigenough) 3322 *eofp = 0; 3323 else 3324 *eofp = eof; 3325 } 3326 3327 /* 3328 * Add extra empty records to any remaining DIRBLKSIZ chunks. 3329 */ 3330 while (uiop->uio_resid > 0 && uiop->uio_resid != tresid) { 3331 dp = (struct dirent *)uiop->uio_iov->iov_base; 3332 NFSBZERO(dp, DIRBLKSIZ); 3333 dp->d_type = DT_UNKNOWN; 3334 tl = (u_int32_t *)&dp->d_name[4]; 3335 *tl++ = cookie.lval[0]; 3336 *tl = cookie.lval[1]; 3337 dp->d_reclen = DIRBLKSIZ; 3338 uiop->uio_iov->iov_base = (char *)uiop->uio_iov->iov_base + 3339 DIRBLKSIZ; 3340 uiop->uio_iov->iov_len -= DIRBLKSIZ; 3341 uiop->uio_resid -= DIRBLKSIZ; 3342 uiop->uio_offset += DIRBLKSIZ; 3343 } 3344 3345 nfsmout: 3346 if (nd->nd_mrep != NULL) 3347 m_freem(nd->nd_mrep); 3348 return (error); 3349 } 3350 3351 #ifndef APPLE 3352 /* 3353 * NFS V3 readdir plus RPC. Used in place of nfsrpc_readdir(). 3354 * (Also used for NFS V4 when mount flag set.) 3355 * (ditto above w.r.t. multiple of DIRBLKSIZ, etc.) 3356 */ 3357 int 3358 nfsrpc_readdirplus(vnode_t vp, struct uio *uiop, nfsuint64 *cookiep, 3359 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, 3360 int *eofp, void *stuff) 3361 { 3362 int len, left; 3363 struct dirent *dp = NULL; 3364 u_int32_t *tl; 3365 vnode_t newvp = NULLVP; 3366 struct nfsrv_descript nfsd, *nd = &nfsd; 3367 struct nameidata nami, *ndp = &nami; 3368 struct componentname *cnp = &ndp->ni_cnd; 3369 struct nfsmount *nmp = VFSTONFS(vp->v_mount); 3370 struct nfsnode *dnp = VTONFS(vp), *np; 3371 struct nfsvattr nfsva; 3372 struct nfsfh *nfhp; 3373 nfsquad_t cookie, ncookie; 3374 int error = 0, tlen, more_dirs = 1, blksiz = 0, bigenough = 1; 3375 int attrflag, tryformoredirs = 1, eof = 0, gotmnton = 0; 3376 int isdotdot = 0, unlocknewvp = 0; 3377 u_int64_t dotfileid, dotdotfileid = 0, fakefileno = UINT64_MAX; 3378 u_int64_t fileno = 0; 3379 char *cp; 3380 nfsattrbit_t attrbits, dattrbits; 3381 size_t tresid; 3382 u_int32_t *tl2 = NULL, rderr; 3383 struct timespec dctime; 3384 3385 KASSERT(uiop->uio_iovcnt == 1 && 3386 (uiop->uio_resid & (DIRBLKSIZ - 1)) == 0, 3387 ("nfs readdirplusrpc bad uio")); 3388 ncookie.lval[0] = ncookie.lval[1] = 0; 3389 timespecclear(&dctime); 3390 *attrflagp = 0; 3391 if (eofp != NULL) 3392 *eofp = 0; 3393 ndp->ni_dvp = vp; 3394 nd->nd_mrep = NULL; 3395 cookie.lval[0] = cookiep->nfsuquad[0]; 3396 cookie.lval[1] = cookiep->nfsuquad[1]; 3397 tresid = uiop->uio_resid; 3398 3399 /* 3400 * For NFSv4, first create the "." and ".." entries. 3401 */ 3402 if (NFSHASNFSV4(nmp)) { 3403 NFSGETATTR_ATTRBIT(&dattrbits); 3404 NFSZERO_ATTRBIT(&attrbits); 3405 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_FILEID); 3406 if (NFSISSET_ATTRBIT(&dnp->n_vattr.na_suppattr, 3407 NFSATTRBIT_MOUNTEDONFILEID)) { 3408 NFSSETBIT_ATTRBIT(&attrbits, 3409 NFSATTRBIT_MOUNTEDONFILEID); 3410 gotmnton = 1; 3411 } else { 3412 /* 3413 * Must fake it. Use the fileno, except when the 3414 * fsid is != to that of the directory. For that 3415 * case, generate a fake fileno that is not the same. 3416 */ 3417 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_FSID); 3418 gotmnton = 0; 3419 } 3420 3421 /* 3422 * Joy, oh joy. For V4 we get to hand craft '.' and '..'. 3423 */ 3424 if (uiop->uio_offset == 0) { 3425 NFSCL_REQSTART(nd, NFSPROC_LOOKUPP, vp); 3426 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 3427 *tl++ = txdr_unsigned(NFSV4OP_GETFH); 3428 *tl = txdr_unsigned(NFSV4OP_GETATTR); 3429 (void) nfsrv_putattrbit(nd, &attrbits); 3430 error = nfscl_request(nd, vp, p, cred, stuff); 3431 if (error) 3432 return (error); 3433 dotfileid = 0; /* Fake out the compiler. */ 3434 if ((nd->nd_flag & ND_NOMOREDATA) == 0) { 3435 error = nfsm_loadattr(nd, &nfsva); 3436 if (error != 0) 3437 goto nfsmout; 3438 dctime = nfsva.na_ctime; 3439 dotfileid = nfsva.na_fileid; 3440 } 3441 if (nd->nd_repstat == 0) { 3442 NFSM_DISSECT(tl, u_int32_t *, 5 * NFSX_UNSIGNED); 3443 len = fxdr_unsigned(int, *(tl + 4)); 3444 if (len > 0 && len <= NFSX_V4FHMAX) 3445 error = nfsm_advance(nd, NFSM_RNDUP(len), -1); 3446 else 3447 error = EPERM; 3448 if (!error) { 3449 NFSM_DISSECT(tl, u_int32_t *, 2*NFSX_UNSIGNED); 3450 nfsva.na_mntonfileno = UINT64_MAX; 3451 error = nfsv4_loadattr(nd, NULL, &nfsva, NULL, 3452 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0, 3453 NULL, NULL, NULL, p, cred); 3454 if (error) { 3455 dotdotfileid = dotfileid; 3456 } else if (gotmnton) { 3457 if (nfsva.na_mntonfileno != UINT64_MAX) 3458 dotdotfileid = nfsva.na_mntonfileno; 3459 else 3460 dotdotfileid = nfsva.na_fileid; 3461 } else if (nfsva.na_filesid[0] == 3462 dnp->n_vattr.na_filesid[0] && 3463 nfsva.na_filesid[1] == 3464 dnp->n_vattr.na_filesid[1]) { 3465 dotdotfileid = nfsva.na_fileid; 3466 } else { 3467 do { 3468 fakefileno--; 3469 } while (fakefileno == 3470 nfsva.na_fileid); 3471 dotdotfileid = fakefileno; 3472 } 3473 } 3474 } else if (nd->nd_repstat == NFSERR_NOENT) { 3475 /* 3476 * Lookupp returns NFSERR_NOENT when we are 3477 * at the root, so just use the current dir. 3478 */ 3479 nd->nd_repstat = 0; 3480 dotdotfileid = dotfileid; 3481 } else { 3482 error = nd->nd_repstat; 3483 } 3484 m_freem(nd->nd_mrep); 3485 if (error) 3486 return (error); 3487 nd->nd_mrep = NULL; 3488 dp = (struct dirent *)uiop->uio_iov->iov_base; 3489 dp->d_pad0 = dp->d_pad1 = 0; 3490 dp->d_off = 0; 3491 dp->d_type = DT_DIR; 3492 dp->d_fileno = dotfileid; 3493 dp->d_namlen = 1; 3494 *((uint64_t *)dp->d_name) = 0; /* Zero pad it. */ 3495 dp->d_name[0] = '.'; 3496 dp->d_reclen = _GENERIC_DIRSIZ(dp) + NFSX_HYPER; 3497 /* 3498 * Just make these offset cookie 0. 3499 */ 3500 tl = (u_int32_t *)&dp->d_name[8]; 3501 *tl++ = 0; 3502 *tl = 0; 3503 blksiz += dp->d_reclen; 3504 uiop->uio_resid -= dp->d_reclen; 3505 uiop->uio_offset += dp->d_reclen; 3506 uiop->uio_iov->iov_base = 3507 (char *)uiop->uio_iov->iov_base + dp->d_reclen; 3508 uiop->uio_iov->iov_len -= dp->d_reclen; 3509 dp = (struct dirent *)uiop->uio_iov->iov_base; 3510 dp->d_pad0 = dp->d_pad1 = 0; 3511 dp->d_off = 0; 3512 dp->d_type = DT_DIR; 3513 dp->d_fileno = dotdotfileid; 3514 dp->d_namlen = 2; 3515 *((uint64_t *)dp->d_name) = 0; 3516 dp->d_name[0] = '.'; 3517 dp->d_name[1] = '.'; 3518 dp->d_reclen = _GENERIC_DIRSIZ(dp) + NFSX_HYPER; 3519 /* 3520 * Just make these offset cookie 0. 3521 */ 3522 tl = (u_int32_t *)&dp->d_name[8]; 3523 *tl++ = 0; 3524 *tl = 0; 3525 blksiz += dp->d_reclen; 3526 uiop->uio_resid -= dp->d_reclen; 3527 uiop->uio_offset += dp->d_reclen; 3528 uiop->uio_iov->iov_base = 3529 (char *)uiop->uio_iov->iov_base + dp->d_reclen; 3530 uiop->uio_iov->iov_len -= dp->d_reclen; 3531 } 3532 NFSREADDIRPLUS_ATTRBIT(&attrbits); 3533 if (gotmnton) 3534 NFSSETBIT_ATTRBIT(&attrbits, 3535 NFSATTRBIT_MOUNTEDONFILEID); 3536 } 3537 3538 /* 3539 * Loop around doing readdir rpc's of size nm_readdirsize. 3540 * The stopping criteria is EOF or buffer full. 3541 */ 3542 while (more_dirs && bigenough) { 3543 *attrflagp = 0; 3544 NFSCL_REQSTART(nd, NFSPROC_READDIRPLUS, vp); 3545 NFSM_BUILD(tl, u_int32_t *, 6 * NFSX_UNSIGNED); 3546 *tl++ = cookie.lval[0]; 3547 *tl++ = cookie.lval[1]; 3548 if (cookie.qval == 0) { 3549 *tl++ = 0; 3550 *tl++ = 0; 3551 } else { 3552 NFSLOCKNODE(dnp); 3553 *tl++ = dnp->n_cookieverf.nfsuquad[0]; 3554 *tl++ = dnp->n_cookieverf.nfsuquad[1]; 3555 NFSUNLOCKNODE(dnp); 3556 } 3557 *tl++ = txdr_unsigned(nmp->nm_readdirsize); 3558 *tl = txdr_unsigned(nmp->nm_readdirsize); 3559 if (nd->nd_flag & ND_NFSV4) { 3560 (void) nfsrv_putattrbit(nd, &attrbits); 3561 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 3562 *tl = txdr_unsigned(NFSV4OP_GETATTR); 3563 (void) nfsrv_putattrbit(nd, &dattrbits); 3564 } 3565 error = nfscl_request(nd, vp, p, cred, stuff); 3566 if (error) 3567 return (error); 3568 if (nd->nd_flag & ND_NFSV3) 3569 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 3570 if (nd->nd_repstat || error) { 3571 if (!error) 3572 error = nd->nd_repstat; 3573 goto nfsmout; 3574 } 3575 if ((nd->nd_flag & ND_NFSV3) != 0 && *attrflagp != 0) 3576 dctime = nap->na_ctime; 3577 NFSM_DISSECT(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 3578 NFSLOCKNODE(dnp); 3579 dnp->n_cookieverf.nfsuquad[0] = *tl++; 3580 dnp->n_cookieverf.nfsuquad[1] = *tl++; 3581 NFSUNLOCKNODE(dnp); 3582 more_dirs = fxdr_unsigned(int, *tl); 3583 if (!more_dirs) 3584 tryformoredirs = 0; 3585 3586 /* loop through the dir entries, doctoring them to 4bsd form */ 3587 while (more_dirs && bigenough) { 3588 NFSM_DISSECT(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 3589 if (nd->nd_flag & ND_NFSV4) { 3590 ncookie.lval[0] = *tl++; 3591 ncookie.lval[1] = *tl++; 3592 } else { 3593 fileno = fxdr_hyper(tl); 3594 tl += 2; 3595 } 3596 len = fxdr_unsigned(int, *tl); 3597 if (len <= 0 || len > NFS_MAXNAMLEN) { 3598 error = EBADRPC; 3599 goto nfsmout; 3600 } 3601 tlen = roundup2(len, 8); 3602 if (tlen == len) 3603 tlen += 8; /* To ensure null termination. */ 3604 left = DIRBLKSIZ - blksiz; 3605 if (_GENERIC_DIRLEN(len) + NFSX_HYPER > left) { 3606 NFSBZERO(uiop->uio_iov->iov_base, left); 3607 dp->d_reclen += left; 3608 uiop->uio_iov->iov_base = 3609 (char *)uiop->uio_iov->iov_base + left; 3610 uiop->uio_iov->iov_len -= left; 3611 uiop->uio_resid -= left; 3612 uiop->uio_offset += left; 3613 blksiz = 0; 3614 } 3615 if (_GENERIC_DIRLEN(len) + NFSX_HYPER > 3616 uiop->uio_resid) 3617 bigenough = 0; 3618 if (bigenough) { 3619 dp = (struct dirent *)uiop->uio_iov->iov_base; 3620 dp->d_pad0 = dp->d_pad1 = 0; 3621 dp->d_off = 0; 3622 dp->d_namlen = len; 3623 dp->d_reclen = _GENERIC_DIRLEN(len) + 3624 NFSX_HYPER; 3625 dp->d_type = DT_UNKNOWN; 3626 blksiz += dp->d_reclen; 3627 if (blksiz == DIRBLKSIZ) 3628 blksiz = 0; 3629 uiop->uio_resid -= DIRHDSIZ; 3630 uiop->uio_offset += DIRHDSIZ; 3631 uiop->uio_iov->iov_base = 3632 (char *)uiop->uio_iov->iov_base + DIRHDSIZ; 3633 uiop->uio_iov->iov_len -= DIRHDSIZ; 3634 cnp->cn_nameptr = uiop->uio_iov->iov_base; 3635 cnp->cn_namelen = len; 3636 NFSCNHASHZERO(cnp); 3637 error = nfsm_mbufuio(nd, uiop, len); 3638 if (error) 3639 goto nfsmout; 3640 cp = uiop->uio_iov->iov_base; 3641 tlen -= len; 3642 NFSBZERO(cp, tlen); 3643 cp += tlen; /* points to cookie storage */ 3644 tl2 = (u_int32_t *)cp; 3645 if (len == 2 && cnp->cn_nameptr[0] == '.' && 3646 cnp->cn_nameptr[1] == '.') 3647 isdotdot = 1; 3648 else 3649 isdotdot = 0; 3650 uiop->uio_iov->iov_base = 3651 (char *)uiop->uio_iov->iov_base + tlen + 3652 NFSX_HYPER; 3653 uiop->uio_iov->iov_len -= tlen + NFSX_HYPER; 3654 uiop->uio_resid -= tlen + NFSX_HYPER; 3655 uiop->uio_offset += (tlen + NFSX_HYPER); 3656 } else { 3657 error = nfsm_advance(nd, NFSM_RNDUP(len), -1); 3658 if (error) 3659 goto nfsmout; 3660 } 3661 nfhp = NULL; 3662 if (nd->nd_flag & ND_NFSV3) { 3663 NFSM_DISSECT(tl, u_int32_t *, 3*NFSX_UNSIGNED); 3664 ncookie.lval[0] = *tl++; 3665 ncookie.lval[1] = *tl++; 3666 attrflag = fxdr_unsigned(int, *tl); 3667 if (attrflag) { 3668 error = nfsm_loadattr(nd, &nfsva); 3669 if (error) 3670 goto nfsmout; 3671 } 3672 NFSM_DISSECT(tl,u_int32_t *,NFSX_UNSIGNED); 3673 if (*tl) { 3674 error = nfsm_getfh(nd, &nfhp); 3675 if (error) 3676 goto nfsmout; 3677 } 3678 if (!attrflag && nfhp != NULL) { 3679 free(nfhp, M_NFSFH); 3680 nfhp = NULL; 3681 } 3682 } else { 3683 rderr = 0; 3684 nfsva.na_mntonfileno = 0xffffffff; 3685 error = nfsv4_loadattr(nd, NULL, &nfsva, &nfhp, 3686 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0, 3687 NULL, NULL, &rderr, p, cred); 3688 if (error) 3689 goto nfsmout; 3690 } 3691 3692 if (bigenough) { 3693 if (nd->nd_flag & ND_NFSV4) { 3694 if (rderr) { 3695 dp->d_fileno = 0; 3696 } else if (gotmnton) { 3697 if (nfsva.na_mntonfileno != 0xffffffff) 3698 dp->d_fileno = nfsva.na_mntonfileno; 3699 else 3700 dp->d_fileno = nfsva.na_fileid; 3701 } else if (nfsva.na_filesid[0] == 3702 dnp->n_vattr.na_filesid[0] && 3703 nfsva.na_filesid[1] == 3704 dnp->n_vattr.na_filesid[1]) { 3705 dp->d_fileno = nfsva.na_fileid; 3706 } else { 3707 do { 3708 fakefileno--; 3709 } while (fakefileno == 3710 nfsva.na_fileid); 3711 dp->d_fileno = fakefileno; 3712 } 3713 } else { 3714 dp->d_fileno = fileno; 3715 } 3716 *tl2++ = cookiep->nfsuquad[0] = cookie.lval[0] = 3717 ncookie.lval[0]; 3718 *tl2 = cookiep->nfsuquad[1] = cookie.lval[1] = 3719 ncookie.lval[1]; 3720 3721 if (nfhp != NULL) { 3722 if (NFSRV_CMPFH(nfhp->nfh_fh, nfhp->nfh_len, 3723 dnp->n_fhp->nfh_fh, dnp->n_fhp->nfh_len)) { 3724 VREF(vp); 3725 newvp = vp; 3726 unlocknewvp = 0; 3727 free(nfhp, M_NFSFH); 3728 np = dnp; 3729 } else if (isdotdot != 0) { 3730 /* 3731 * Skip doing a nfscl_nget() call for "..". 3732 * There's a race between acquiring the nfs 3733 * node here and lookups that look for the 3734 * directory being read (in the parent). 3735 * It would try to get a lock on ".." here, 3736 * owning the lock on the directory being 3737 * read. Lookup will hold the lock on ".." 3738 * and try to acquire the lock on the 3739 * directory being read. 3740 * If the directory is unlocked/relocked, 3741 * then there is a LOR with the buflock 3742 * vp is relocked. 3743 */ 3744 free(nfhp, M_NFSFH); 3745 } else { 3746 error = nfscl_nget(vp->v_mount, vp, 3747 nfhp, cnp, p, &np, NULL, LK_EXCLUSIVE); 3748 if (!error) { 3749 newvp = NFSTOV(np); 3750 unlocknewvp = 1; 3751 } 3752 } 3753 nfhp = NULL; 3754 if (newvp != NULLVP) { 3755 error = nfscl_loadattrcache(&newvp, 3756 &nfsva, NULL, NULL, 0, 0); 3757 if (error) { 3758 if (unlocknewvp) 3759 vput(newvp); 3760 else 3761 vrele(newvp); 3762 goto nfsmout; 3763 } 3764 dp->d_type = 3765 vtonfs_dtype(np->n_vattr.na_type); 3766 ndp->ni_vp = newvp; 3767 NFSCNHASH(cnp, HASHINIT); 3768 if (cnp->cn_namelen <= NCHNAMLEN && 3769 (newvp->v_type != VDIR || 3770 dctime.tv_sec != 0)) { 3771 cache_enter_time(ndp->ni_dvp, 3772 ndp->ni_vp, cnp, 3773 &nfsva.na_ctime, 3774 newvp->v_type != VDIR ? NULL : 3775 &dctime); 3776 } 3777 if (unlocknewvp) 3778 vput(newvp); 3779 else 3780 vrele(newvp); 3781 newvp = NULLVP; 3782 } 3783 } 3784 } else if (nfhp != NULL) { 3785 free(nfhp, M_NFSFH); 3786 } 3787 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 3788 more_dirs = fxdr_unsigned(int, *tl); 3789 } 3790 /* 3791 * If at end of rpc data, get the eof boolean 3792 */ 3793 if (!more_dirs) { 3794 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 3795 eof = fxdr_unsigned(int, *tl); 3796 if (tryformoredirs) 3797 more_dirs = !eof; 3798 if (nd->nd_flag & ND_NFSV4) { 3799 error = nfscl_postop_attr(nd, nap, attrflagp, 3800 stuff); 3801 if (error) 3802 goto nfsmout; 3803 } 3804 } 3805 m_freem(nd->nd_mrep); 3806 nd->nd_mrep = NULL; 3807 } 3808 /* 3809 * Fill last record, iff any, out to a multiple of DIRBLKSIZ 3810 * by increasing d_reclen for the last record. 3811 */ 3812 if (blksiz > 0) { 3813 left = DIRBLKSIZ - blksiz; 3814 NFSBZERO(uiop->uio_iov->iov_base, left); 3815 dp->d_reclen += left; 3816 uiop->uio_iov->iov_base = (char *)uiop->uio_iov->iov_base + 3817 left; 3818 uiop->uio_iov->iov_len -= left; 3819 uiop->uio_resid -= left; 3820 uiop->uio_offset += left; 3821 } 3822 3823 /* 3824 * If returning no data, assume end of file. 3825 * If not bigenough, return not end of file, since you aren't 3826 * returning all the data 3827 * Otherwise, return the eof flag from the server. 3828 */ 3829 if (eofp != NULL) { 3830 if (tresid == uiop->uio_resid) 3831 *eofp = 1; 3832 else if (!bigenough) 3833 *eofp = 0; 3834 else 3835 *eofp = eof; 3836 } 3837 3838 /* 3839 * Add extra empty records to any remaining DIRBLKSIZ chunks. 3840 */ 3841 while (uiop->uio_resid > 0 && uiop->uio_resid != tresid) { 3842 dp = (struct dirent *)uiop->uio_iov->iov_base; 3843 NFSBZERO(dp, DIRBLKSIZ); 3844 dp->d_type = DT_UNKNOWN; 3845 tl = (u_int32_t *)&dp->d_name[4]; 3846 *tl++ = cookie.lval[0]; 3847 *tl = cookie.lval[1]; 3848 dp->d_reclen = DIRBLKSIZ; 3849 uiop->uio_iov->iov_base = (char *)uiop->uio_iov->iov_base + 3850 DIRBLKSIZ; 3851 uiop->uio_iov->iov_len -= DIRBLKSIZ; 3852 uiop->uio_resid -= DIRBLKSIZ; 3853 uiop->uio_offset += DIRBLKSIZ; 3854 } 3855 3856 nfsmout: 3857 if (nd->nd_mrep != NULL) 3858 m_freem(nd->nd_mrep); 3859 return (error); 3860 } 3861 #endif /* !APPLE */ 3862 3863 /* 3864 * Nfs commit rpc 3865 */ 3866 int 3867 nfsrpc_commit(vnode_t vp, u_quad_t offset, int cnt, struct ucred *cred, 3868 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff) 3869 { 3870 u_int32_t *tl; 3871 struct nfsrv_descript nfsd, *nd = &nfsd; 3872 nfsattrbit_t attrbits; 3873 int error; 3874 struct nfsmount *nmp = VFSTONFS(vp->v_mount); 3875 3876 *attrflagp = 0; 3877 NFSCL_REQSTART(nd, NFSPROC_COMMIT, vp); 3878 NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 3879 txdr_hyper(offset, tl); 3880 tl += 2; 3881 *tl = txdr_unsigned(cnt); 3882 if (nd->nd_flag & ND_NFSV4) { 3883 /* 3884 * And do a Getattr op. 3885 */ 3886 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 3887 *tl = txdr_unsigned(NFSV4OP_GETATTR); 3888 NFSGETATTR_ATTRBIT(&attrbits); 3889 (void) nfsrv_putattrbit(nd, &attrbits); 3890 } 3891 error = nfscl_request(nd, vp, p, cred, stuff); 3892 if (error) 3893 return (error); 3894 error = nfscl_wcc_data(nd, vp, nap, attrflagp, NULL, stuff); 3895 if (!error && !nd->nd_repstat) { 3896 NFSM_DISSECT(tl, u_int32_t *, NFSX_VERF); 3897 NFSLOCKMNT(nmp); 3898 if (NFSBCMP(nmp->nm_verf, tl, NFSX_VERF)) { 3899 NFSBCOPY(tl, nmp->nm_verf, NFSX_VERF); 3900 nd->nd_repstat = NFSERR_STALEWRITEVERF; 3901 } 3902 NFSUNLOCKMNT(nmp); 3903 if (nd->nd_flag & ND_NFSV4) 3904 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 3905 } 3906 nfsmout: 3907 if (!error && nd->nd_repstat) 3908 error = nd->nd_repstat; 3909 m_freem(nd->nd_mrep); 3910 return (error); 3911 } 3912 3913 /* 3914 * NFS byte range lock rpc. 3915 * (Mostly just calls one of the three lower level RPC routines.) 3916 */ 3917 int 3918 nfsrpc_advlock(vnode_t vp, off_t size, int op, struct flock *fl, 3919 int reclaim, struct ucred *cred, NFSPROC_T *p, void *id, int flags) 3920 { 3921 struct nfscllockowner *lp; 3922 struct nfsclclient *clp; 3923 struct nfsfh *nfhp; 3924 struct nfsrv_descript nfsd, *nd = &nfsd; 3925 struct nfsmount *nmp = VFSTONFS(vp->v_mount); 3926 u_int64_t off, len; 3927 off_t start, end; 3928 u_int32_t clidrev = 0; 3929 int error = 0, newone = 0, expireret = 0, retrycnt, donelocally; 3930 int callcnt, dorpc; 3931 3932 /* 3933 * Convert the flock structure into a start and end and do POSIX 3934 * bounds checking. 3935 */ 3936 switch (fl->l_whence) { 3937 case SEEK_SET: 3938 case SEEK_CUR: 3939 /* 3940 * Caller is responsible for adding any necessary offset 3941 * when SEEK_CUR is used. 3942 */ 3943 start = fl->l_start; 3944 off = fl->l_start; 3945 break; 3946 case SEEK_END: 3947 start = size + fl->l_start; 3948 off = size + fl->l_start; 3949 break; 3950 default: 3951 return (EINVAL); 3952 } 3953 if (start < 0) 3954 return (EINVAL); 3955 if (fl->l_len != 0) { 3956 end = start + fl->l_len - 1; 3957 if (end < start) 3958 return (EINVAL); 3959 } 3960 3961 len = fl->l_len; 3962 if (len == 0) 3963 len = NFS64BITSSET; 3964 retrycnt = 0; 3965 do { 3966 nd->nd_repstat = 0; 3967 if (op == F_GETLK) { 3968 error = nfscl_getcl(vp->v_mount, cred, p, 1, &clp); 3969 if (error) 3970 return (error); 3971 error = nfscl_lockt(vp, clp, off, len, fl, p, id, flags); 3972 if (!error) { 3973 clidrev = clp->nfsc_clientidrev; 3974 error = nfsrpc_lockt(nd, vp, clp, off, len, fl, cred, 3975 p, id, flags); 3976 } else if (error == -1) { 3977 error = 0; 3978 } 3979 nfscl_clientrelease(clp); 3980 } else if (op == F_UNLCK && fl->l_type == F_UNLCK) { 3981 /* 3982 * We must loop around for all lockowner cases. 3983 */ 3984 callcnt = 0; 3985 error = nfscl_getcl(vp->v_mount, cred, p, 1, &clp); 3986 if (error) 3987 return (error); 3988 do { 3989 error = nfscl_relbytelock(vp, off, len, cred, p, callcnt, 3990 clp, id, flags, &lp, &dorpc); 3991 /* 3992 * If it returns a NULL lp, we're done. 3993 */ 3994 if (lp == NULL) { 3995 if (callcnt == 0) 3996 nfscl_clientrelease(clp); 3997 else 3998 nfscl_releasealllocks(clp, vp, p, id, flags); 3999 return (error); 4000 } 4001 if (nmp->nm_clp != NULL) 4002 clidrev = nmp->nm_clp->nfsc_clientidrev; 4003 else 4004 clidrev = 0; 4005 /* 4006 * If the server doesn't support Posix lock semantics, 4007 * only allow locks on the entire file, since it won't 4008 * handle overlapping byte ranges. 4009 * There might still be a problem when a lock 4010 * upgrade/downgrade (read<->write) occurs, since the 4011 * server "might" expect an unlock first? 4012 */ 4013 if (dorpc && (lp->nfsl_open->nfso_posixlock || 4014 (off == 0 && len == NFS64BITSSET))) { 4015 /* 4016 * Since the lock records will go away, we must 4017 * wait for grace and delay here. 4018 */ 4019 do { 4020 error = nfsrpc_locku(nd, nmp, lp, off, len, 4021 NFSV4LOCKT_READ, cred, p, 0); 4022 if ((nd->nd_repstat == NFSERR_GRACE || 4023 nd->nd_repstat == NFSERR_DELAY) && 4024 error == 0) 4025 (void) nfs_catnap(PZERO, (int)nd->nd_repstat, 4026 "nfs_advlock"); 4027 } while ((nd->nd_repstat == NFSERR_GRACE || 4028 nd->nd_repstat == NFSERR_DELAY) && error == 0); 4029 } 4030 callcnt++; 4031 } while (error == 0 && nd->nd_repstat == 0); 4032 nfscl_releasealllocks(clp, vp, p, id, flags); 4033 } else if (op == F_SETLK) { 4034 error = nfscl_getbytelock(vp, off, len, fl->l_type, cred, p, 4035 NULL, 0, id, flags, NULL, NULL, &lp, &newone, &donelocally); 4036 if (error || donelocally) { 4037 return (error); 4038 } 4039 if (nmp->nm_clp != NULL) 4040 clidrev = nmp->nm_clp->nfsc_clientidrev; 4041 else 4042 clidrev = 0; 4043 nfhp = VTONFS(vp)->n_fhp; 4044 if (!lp->nfsl_open->nfso_posixlock && 4045 (off != 0 || len != NFS64BITSSET)) { 4046 error = EINVAL; 4047 } else { 4048 error = nfsrpc_lock(nd, nmp, vp, nfhp->nfh_fh, 4049 nfhp->nfh_len, lp, newone, reclaim, off, 4050 len, fl->l_type, cred, p, 0); 4051 } 4052 if (!error) 4053 error = nd->nd_repstat; 4054 nfscl_lockrelease(lp, error, newone); 4055 } else { 4056 error = EINVAL; 4057 } 4058 if (!error) 4059 error = nd->nd_repstat; 4060 if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 4061 error == NFSERR_STALEDONTRECOVER || 4062 error == NFSERR_STALECLIENTID || error == NFSERR_DELAY || 4063 error == NFSERR_BADSESSION) { 4064 (void) nfs_catnap(PZERO, error, "nfs_advlock"); 4065 } else if ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) 4066 && clidrev != 0) { 4067 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p); 4068 retrycnt++; 4069 } 4070 } while (error == NFSERR_GRACE || 4071 error == NFSERR_STALECLIENTID || error == NFSERR_DELAY || 4072 error == NFSERR_STALEDONTRECOVER || error == NFSERR_STALESTATEID || 4073 error == NFSERR_BADSESSION || 4074 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) && 4075 expireret == 0 && clidrev != 0 && retrycnt < 4)); 4076 if (error && retrycnt >= 4) 4077 error = EIO; 4078 return (error); 4079 } 4080 4081 /* 4082 * The lower level routine for the LockT case. 4083 */ 4084 int 4085 nfsrpc_lockt(struct nfsrv_descript *nd, vnode_t vp, 4086 struct nfsclclient *clp, u_int64_t off, u_int64_t len, struct flock *fl, 4087 struct ucred *cred, NFSPROC_T *p, void *id, int flags) 4088 { 4089 u_int32_t *tl; 4090 int error, type, size; 4091 uint8_t own[NFSV4CL_LOCKNAMELEN + NFSX_V4FHMAX]; 4092 struct nfsnode *np; 4093 struct nfsmount *nmp; 4094 struct nfsclsession *tsep; 4095 4096 nmp = VFSTONFS(vp->v_mount); 4097 NFSCL_REQSTART(nd, NFSPROC_LOCKT, vp); 4098 NFSM_BUILD(tl, u_int32_t *, 7 * NFSX_UNSIGNED); 4099 if (fl->l_type == F_RDLCK) 4100 *tl++ = txdr_unsigned(NFSV4LOCKT_READ); 4101 else 4102 *tl++ = txdr_unsigned(NFSV4LOCKT_WRITE); 4103 txdr_hyper(off, tl); 4104 tl += 2; 4105 txdr_hyper(len, tl); 4106 tl += 2; 4107 tsep = nfsmnt_mdssession(nmp); 4108 *tl++ = tsep->nfsess_clientid.lval[0]; 4109 *tl = tsep->nfsess_clientid.lval[1]; 4110 nfscl_filllockowner(id, own, flags); 4111 np = VTONFS(vp); 4112 NFSBCOPY(np->n_fhp->nfh_fh, &own[NFSV4CL_LOCKNAMELEN], 4113 np->n_fhp->nfh_len); 4114 (void)nfsm_strtom(nd, own, NFSV4CL_LOCKNAMELEN + np->n_fhp->nfh_len); 4115 error = nfscl_request(nd, vp, p, cred, NULL); 4116 if (error) 4117 return (error); 4118 if (nd->nd_repstat == 0) { 4119 fl->l_type = F_UNLCK; 4120 } else if (nd->nd_repstat == NFSERR_DENIED) { 4121 nd->nd_repstat = 0; 4122 fl->l_whence = SEEK_SET; 4123 NFSM_DISSECT(tl, u_int32_t *, 8 * NFSX_UNSIGNED); 4124 fl->l_start = fxdr_hyper(tl); 4125 tl += 2; 4126 len = fxdr_hyper(tl); 4127 tl += 2; 4128 if (len == NFS64BITSSET) 4129 fl->l_len = 0; 4130 else 4131 fl->l_len = len; 4132 type = fxdr_unsigned(int, *tl++); 4133 if (type == NFSV4LOCKT_WRITE) 4134 fl->l_type = F_WRLCK; 4135 else 4136 fl->l_type = F_RDLCK; 4137 /* 4138 * XXX For now, I have no idea what to do with the 4139 * conflicting lock_owner, so I'll just set the pid == 0 4140 * and skip over the lock_owner. 4141 */ 4142 fl->l_pid = (pid_t)0; 4143 tl += 2; 4144 size = fxdr_unsigned(int, *tl); 4145 if (size < 0 || size > NFSV4_OPAQUELIMIT) 4146 error = EBADRPC; 4147 if (!error) 4148 error = nfsm_advance(nd, NFSM_RNDUP(size), -1); 4149 } else if (nd->nd_repstat == NFSERR_STALECLIENTID) 4150 nfscl_initiate_recovery(clp); 4151 nfsmout: 4152 m_freem(nd->nd_mrep); 4153 return (error); 4154 } 4155 4156 /* 4157 * Lower level function that performs the LockU RPC. 4158 */ 4159 static int 4160 nfsrpc_locku(struct nfsrv_descript *nd, struct nfsmount *nmp, 4161 struct nfscllockowner *lp, u_int64_t off, u_int64_t len, 4162 u_int32_t type, struct ucred *cred, NFSPROC_T *p, int syscred) 4163 { 4164 u_int32_t *tl; 4165 int error; 4166 4167 nfscl_reqstart(nd, NFSPROC_LOCKU, nmp, lp->nfsl_open->nfso_fh, 4168 lp->nfsl_open->nfso_fhlen, NULL, NULL, 0, 0, false); 4169 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID + 6 * NFSX_UNSIGNED); 4170 *tl++ = txdr_unsigned(type); 4171 *tl = txdr_unsigned(lp->nfsl_seqid); 4172 if (nfstest_outofseq && 4173 (arc4random() % nfstest_outofseq) == 0) 4174 *tl = txdr_unsigned(lp->nfsl_seqid + 1); 4175 tl++; 4176 if (NFSHASNFSV4N(nmp)) 4177 *tl++ = 0; 4178 else 4179 *tl++ = lp->nfsl_stateid.seqid; 4180 *tl++ = lp->nfsl_stateid.other[0]; 4181 *tl++ = lp->nfsl_stateid.other[1]; 4182 *tl++ = lp->nfsl_stateid.other[2]; 4183 txdr_hyper(off, tl); 4184 tl += 2; 4185 txdr_hyper(len, tl); 4186 if (syscred) 4187 nd->nd_flag |= ND_USEGSSNAME; 4188 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 4189 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4190 NFSCL_INCRSEQID(lp->nfsl_seqid, nd); 4191 if (error) 4192 return (error); 4193 if (nd->nd_repstat == 0) { 4194 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID); 4195 lp->nfsl_stateid.seqid = *tl++; 4196 lp->nfsl_stateid.other[0] = *tl++; 4197 lp->nfsl_stateid.other[1] = *tl++; 4198 lp->nfsl_stateid.other[2] = *tl; 4199 } else if (nd->nd_repstat == NFSERR_STALESTATEID) 4200 nfscl_initiate_recovery(lp->nfsl_open->nfso_own->nfsow_clp); 4201 nfsmout: 4202 m_freem(nd->nd_mrep); 4203 return (error); 4204 } 4205 4206 /* 4207 * The actual Lock RPC. 4208 */ 4209 int 4210 nfsrpc_lock(struct nfsrv_descript *nd, struct nfsmount *nmp, vnode_t vp, 4211 u_int8_t *nfhp, int fhlen, struct nfscllockowner *lp, int newone, 4212 int reclaim, u_int64_t off, u_int64_t len, short type, struct ucred *cred, 4213 NFSPROC_T *p, int syscred) 4214 { 4215 u_int32_t *tl; 4216 int error, size; 4217 uint8_t own[NFSV4CL_LOCKNAMELEN + NFSX_V4FHMAX]; 4218 struct nfsclsession *tsep; 4219 4220 nfscl_reqstart(nd, NFSPROC_LOCK, nmp, nfhp, fhlen, NULL, NULL, 0, 0, 4221 false); 4222 NFSM_BUILD(tl, u_int32_t *, 7 * NFSX_UNSIGNED); 4223 if (type == F_RDLCK) 4224 *tl++ = txdr_unsigned(NFSV4LOCKT_READ); 4225 else 4226 *tl++ = txdr_unsigned(NFSV4LOCKT_WRITE); 4227 *tl++ = txdr_unsigned(reclaim); 4228 txdr_hyper(off, tl); 4229 tl += 2; 4230 txdr_hyper(len, tl); 4231 tl += 2; 4232 if (newone) { 4233 *tl = newnfs_true; 4234 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID + 4235 2 * NFSX_UNSIGNED + NFSX_HYPER); 4236 *tl++ = txdr_unsigned(lp->nfsl_open->nfso_own->nfsow_seqid); 4237 if (NFSHASNFSV4N(nmp)) 4238 *tl++ = 0; 4239 else 4240 *tl++ = lp->nfsl_open->nfso_stateid.seqid; 4241 *tl++ = lp->nfsl_open->nfso_stateid.other[0]; 4242 *tl++ = lp->nfsl_open->nfso_stateid.other[1]; 4243 *tl++ = lp->nfsl_open->nfso_stateid.other[2]; 4244 *tl++ = txdr_unsigned(lp->nfsl_seqid); 4245 tsep = nfsmnt_mdssession(nmp); 4246 *tl++ = tsep->nfsess_clientid.lval[0]; 4247 *tl = tsep->nfsess_clientid.lval[1]; 4248 NFSBCOPY(lp->nfsl_owner, own, NFSV4CL_LOCKNAMELEN); 4249 NFSBCOPY(nfhp, &own[NFSV4CL_LOCKNAMELEN], fhlen); 4250 (void)nfsm_strtom(nd, own, NFSV4CL_LOCKNAMELEN + fhlen); 4251 } else { 4252 *tl = newnfs_false; 4253 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID + NFSX_UNSIGNED); 4254 if (NFSHASNFSV4N(nmp)) 4255 *tl++ = 0; 4256 else 4257 *tl++ = lp->nfsl_stateid.seqid; 4258 *tl++ = lp->nfsl_stateid.other[0]; 4259 *tl++ = lp->nfsl_stateid.other[1]; 4260 *tl++ = lp->nfsl_stateid.other[2]; 4261 *tl = txdr_unsigned(lp->nfsl_seqid); 4262 if (nfstest_outofseq && 4263 (arc4random() % nfstest_outofseq) == 0) 4264 *tl = txdr_unsigned(lp->nfsl_seqid + 1); 4265 } 4266 if (syscred) 4267 nd->nd_flag |= ND_USEGSSNAME; 4268 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, vp, p, cred, 4269 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4270 if (error) 4271 return (error); 4272 if (newone) 4273 NFSCL_INCRSEQID(lp->nfsl_open->nfso_own->nfsow_seqid, nd); 4274 NFSCL_INCRSEQID(lp->nfsl_seqid, nd); 4275 if (nd->nd_repstat == 0) { 4276 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID); 4277 lp->nfsl_stateid.seqid = *tl++; 4278 lp->nfsl_stateid.other[0] = *tl++; 4279 lp->nfsl_stateid.other[1] = *tl++; 4280 lp->nfsl_stateid.other[2] = *tl; 4281 } else if (nd->nd_repstat == NFSERR_DENIED) { 4282 NFSM_DISSECT(tl, u_int32_t *, 8 * NFSX_UNSIGNED); 4283 size = fxdr_unsigned(int, *(tl + 7)); 4284 if (size < 0 || size > NFSV4_OPAQUELIMIT) 4285 error = EBADRPC; 4286 if (!error) 4287 error = nfsm_advance(nd, NFSM_RNDUP(size), -1); 4288 } else if (nd->nd_repstat == NFSERR_STALESTATEID) 4289 nfscl_initiate_recovery(lp->nfsl_open->nfso_own->nfsow_clp); 4290 nfsmout: 4291 m_freem(nd->nd_mrep); 4292 return (error); 4293 } 4294 4295 /* 4296 * nfs statfs rpc 4297 * (always called with the vp for the mount point) 4298 */ 4299 int 4300 nfsrpc_statfs(vnode_t vp, struct nfsstatfs *sbp, struct nfsfsinfo *fsp, 4301 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, 4302 void *stuff) 4303 { 4304 u_int32_t *tl = NULL; 4305 struct nfsrv_descript nfsd, *nd = &nfsd; 4306 struct nfsmount *nmp; 4307 nfsattrbit_t attrbits; 4308 int error; 4309 4310 *attrflagp = 0; 4311 nmp = VFSTONFS(vp->v_mount); 4312 if (NFSHASNFSV4(nmp)) { 4313 /* 4314 * For V4, you actually do a getattr. 4315 */ 4316 NFSCL_REQSTART(nd, NFSPROC_GETATTR, vp); 4317 NFSSTATFS_GETATTRBIT(&attrbits); 4318 (void) nfsrv_putattrbit(nd, &attrbits); 4319 nd->nd_flag |= ND_USEGSSNAME; 4320 error = nfscl_request(nd, vp, p, cred, stuff); 4321 if (error) 4322 return (error); 4323 if (nd->nd_repstat == 0) { 4324 error = nfsv4_loadattr(nd, NULL, nap, NULL, NULL, 0, 4325 NULL, NULL, sbp, fsp, NULL, 0, NULL, NULL, NULL, p, 4326 cred); 4327 if (!error) { 4328 nmp->nm_fsid[0] = nap->na_filesid[0]; 4329 nmp->nm_fsid[1] = nap->na_filesid[1]; 4330 NFSSETHASSETFSID(nmp); 4331 *attrflagp = 1; 4332 } 4333 } else { 4334 error = nd->nd_repstat; 4335 } 4336 if (error) 4337 goto nfsmout; 4338 } else { 4339 NFSCL_REQSTART(nd, NFSPROC_FSSTAT, vp); 4340 error = nfscl_request(nd, vp, p, cred, stuff); 4341 if (error) 4342 return (error); 4343 if (nd->nd_flag & ND_NFSV3) { 4344 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 4345 if (error) 4346 goto nfsmout; 4347 } 4348 if (nd->nd_repstat) { 4349 error = nd->nd_repstat; 4350 goto nfsmout; 4351 } 4352 NFSM_DISSECT(tl, u_int32_t *, 4353 NFSX_STATFS(nd->nd_flag & ND_NFSV3)); 4354 } 4355 if (NFSHASNFSV3(nmp)) { 4356 sbp->sf_tbytes = fxdr_hyper(tl); tl += 2; 4357 sbp->sf_fbytes = fxdr_hyper(tl); tl += 2; 4358 sbp->sf_abytes = fxdr_hyper(tl); tl += 2; 4359 sbp->sf_tfiles = fxdr_hyper(tl); tl += 2; 4360 sbp->sf_ffiles = fxdr_hyper(tl); tl += 2; 4361 sbp->sf_afiles = fxdr_hyper(tl); tl += 2; 4362 sbp->sf_invarsec = fxdr_unsigned(u_int32_t, *tl); 4363 } else if (NFSHASNFSV4(nmp) == 0) { 4364 sbp->sf_tsize = fxdr_unsigned(u_int32_t, *tl++); 4365 sbp->sf_bsize = fxdr_unsigned(u_int32_t, *tl++); 4366 sbp->sf_blocks = fxdr_unsigned(u_int32_t, *tl++); 4367 sbp->sf_bfree = fxdr_unsigned(u_int32_t, *tl++); 4368 sbp->sf_bavail = fxdr_unsigned(u_int32_t, *tl); 4369 } 4370 nfsmout: 4371 m_freem(nd->nd_mrep); 4372 return (error); 4373 } 4374 4375 /* 4376 * nfs pathconf rpc 4377 */ 4378 int 4379 nfsrpc_pathconf(vnode_t vp, struct nfsv3_pathconf *pc, 4380 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, 4381 void *stuff) 4382 { 4383 struct nfsrv_descript nfsd, *nd = &nfsd; 4384 struct nfsmount *nmp; 4385 u_int32_t *tl; 4386 nfsattrbit_t attrbits; 4387 int error; 4388 4389 *attrflagp = 0; 4390 nmp = VFSTONFS(vp->v_mount); 4391 if (NFSHASNFSV4(nmp)) { 4392 /* 4393 * For V4, you actually do a getattr. 4394 */ 4395 NFSCL_REQSTART(nd, NFSPROC_GETATTR, vp); 4396 NFSPATHCONF_GETATTRBIT(&attrbits); 4397 (void) nfsrv_putattrbit(nd, &attrbits); 4398 nd->nd_flag |= ND_USEGSSNAME; 4399 error = nfscl_request(nd, vp, p, cred, stuff); 4400 if (error) 4401 return (error); 4402 if (nd->nd_repstat == 0) { 4403 error = nfsv4_loadattr(nd, NULL, nap, NULL, NULL, 0, 4404 pc, NULL, NULL, NULL, NULL, 0, NULL, NULL, NULL, p, 4405 cred); 4406 if (!error) 4407 *attrflagp = 1; 4408 } else { 4409 error = nd->nd_repstat; 4410 } 4411 } else { 4412 NFSCL_REQSTART(nd, NFSPROC_PATHCONF, vp); 4413 error = nfscl_request(nd, vp, p, cred, stuff); 4414 if (error) 4415 return (error); 4416 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 4417 if (nd->nd_repstat && !error) 4418 error = nd->nd_repstat; 4419 if (!error) { 4420 NFSM_DISSECT(tl, u_int32_t *, NFSX_V3PATHCONF); 4421 pc->pc_linkmax = fxdr_unsigned(u_int32_t, *tl++); 4422 pc->pc_namemax = fxdr_unsigned(u_int32_t, *tl++); 4423 pc->pc_notrunc = fxdr_unsigned(u_int32_t, *tl++); 4424 pc->pc_chownrestricted = 4425 fxdr_unsigned(u_int32_t, *tl++); 4426 pc->pc_caseinsensitive = 4427 fxdr_unsigned(u_int32_t, *tl++); 4428 pc->pc_casepreserving = fxdr_unsigned(u_int32_t, *tl); 4429 } 4430 } 4431 nfsmout: 4432 m_freem(nd->nd_mrep); 4433 return (error); 4434 } 4435 4436 /* 4437 * nfs version 3 fsinfo rpc call 4438 */ 4439 int 4440 nfsrpc_fsinfo(vnode_t vp, struct nfsfsinfo *fsp, struct ucred *cred, 4441 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff) 4442 { 4443 u_int32_t *tl; 4444 struct nfsrv_descript nfsd, *nd = &nfsd; 4445 int error; 4446 4447 *attrflagp = 0; 4448 NFSCL_REQSTART(nd, NFSPROC_FSINFO, vp); 4449 error = nfscl_request(nd, vp, p, cred, stuff); 4450 if (error) 4451 return (error); 4452 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 4453 if (nd->nd_repstat && !error) 4454 error = nd->nd_repstat; 4455 if (!error) { 4456 NFSM_DISSECT(tl, u_int32_t *, NFSX_V3FSINFO); 4457 fsp->fs_rtmax = fxdr_unsigned(u_int32_t, *tl++); 4458 fsp->fs_rtpref = fxdr_unsigned(u_int32_t, *tl++); 4459 fsp->fs_rtmult = fxdr_unsigned(u_int32_t, *tl++); 4460 fsp->fs_wtmax = fxdr_unsigned(u_int32_t, *tl++); 4461 fsp->fs_wtpref = fxdr_unsigned(u_int32_t, *tl++); 4462 fsp->fs_wtmult = fxdr_unsigned(u_int32_t, *tl++); 4463 fsp->fs_dtpref = fxdr_unsigned(u_int32_t, *tl++); 4464 fsp->fs_maxfilesize = fxdr_hyper(tl); 4465 tl += 2; 4466 fxdr_nfsv3time(tl, &fsp->fs_timedelta); 4467 tl += 2; 4468 fsp->fs_properties = fxdr_unsigned(u_int32_t, *tl); 4469 } 4470 nfsmout: 4471 m_freem(nd->nd_mrep); 4472 return (error); 4473 } 4474 4475 /* 4476 * This function performs the Renew RPC. 4477 */ 4478 int 4479 nfsrpc_renew(struct nfsclclient *clp, struct nfsclds *dsp, struct ucred *cred, 4480 NFSPROC_T *p) 4481 { 4482 u_int32_t *tl; 4483 struct nfsrv_descript nfsd; 4484 struct nfsrv_descript *nd = &nfsd; 4485 struct nfsmount *nmp; 4486 int error; 4487 struct nfssockreq *nrp; 4488 struct nfsclsession *tsep; 4489 4490 nmp = clp->nfsc_nmp; 4491 if (nmp == NULL) 4492 return (0); 4493 if (dsp == NULL) 4494 nfscl_reqstart(nd, NFSPROC_RENEW, nmp, NULL, 0, NULL, NULL, 0, 4495 0, false); 4496 else 4497 nfscl_reqstart(nd, NFSPROC_RENEW, nmp, NULL, 0, NULL, 4498 &dsp->nfsclds_sess, 0, 0, false); 4499 if (!NFSHASNFSV4N(nmp)) { 4500 /* NFSv4.1 just uses a Sequence Op and not a Renew. */ 4501 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 4502 tsep = nfsmnt_mdssession(nmp); 4503 *tl++ = tsep->nfsess_clientid.lval[0]; 4504 *tl = tsep->nfsess_clientid.lval[1]; 4505 } 4506 nrp = NULL; 4507 if (dsp != NULL) 4508 nrp = dsp->nfsclds_sockp; 4509 if (nrp == NULL) 4510 /* If NULL, use the MDS socket. */ 4511 nrp = &nmp->nm_sockreq; 4512 nd->nd_flag |= ND_USEGSSNAME; 4513 if (dsp == NULL) 4514 error = newnfs_request(nd, nmp, NULL, nrp, NULL, p, cred, 4515 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4516 else { 4517 error = newnfs_request(nd, nmp, NULL, nrp, NULL, p, cred, 4518 NFS_PROG, NFS_VER4, NULL, 1, NULL, &dsp->nfsclds_sess); 4519 if (error == ENXIO) 4520 nfscl_cancelreqs(dsp); 4521 } 4522 if (error) 4523 return (error); 4524 error = nd->nd_repstat; 4525 m_freem(nd->nd_mrep); 4526 return (error); 4527 } 4528 4529 /* 4530 * This function performs the Releaselockowner RPC. 4531 */ 4532 int 4533 nfsrpc_rellockown(struct nfsmount *nmp, struct nfscllockowner *lp, 4534 uint8_t *fh, int fhlen, struct ucred *cred, NFSPROC_T *p) 4535 { 4536 struct nfsrv_descript nfsd, *nd = &nfsd; 4537 u_int32_t *tl; 4538 int error; 4539 uint8_t own[NFSV4CL_LOCKNAMELEN + NFSX_V4FHMAX]; 4540 struct nfsclsession *tsep; 4541 4542 if (NFSHASNFSV4N(nmp)) { 4543 /* For NFSv4.1, do a FreeStateID. */ 4544 nfscl_reqstart(nd, NFSPROC_FREESTATEID, nmp, NULL, 0, NULL, 4545 NULL, 0, 0, false); 4546 nfsm_stateidtom(nd, &lp->nfsl_stateid, NFSSTATEID_PUTSTATEID); 4547 } else { 4548 nfscl_reqstart(nd, NFSPROC_RELEASELCKOWN, nmp, NULL, 0, NULL, 4549 NULL, 0, 0, false); 4550 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 4551 tsep = nfsmnt_mdssession(nmp); 4552 *tl++ = tsep->nfsess_clientid.lval[0]; 4553 *tl = tsep->nfsess_clientid.lval[1]; 4554 NFSBCOPY(lp->nfsl_owner, own, NFSV4CL_LOCKNAMELEN); 4555 NFSBCOPY(fh, &own[NFSV4CL_LOCKNAMELEN], fhlen); 4556 (void)nfsm_strtom(nd, own, NFSV4CL_LOCKNAMELEN + fhlen); 4557 } 4558 nd->nd_flag |= ND_USEGSSNAME; 4559 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 4560 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4561 if (error) 4562 return (error); 4563 error = nd->nd_repstat; 4564 m_freem(nd->nd_mrep); 4565 return (error); 4566 } 4567 4568 /* 4569 * This function performs the Compound to get the mount pt FH. 4570 */ 4571 int 4572 nfsrpc_getdirpath(struct nfsmount *nmp, u_char *dirpath, struct ucred *cred, 4573 NFSPROC_T *p) 4574 { 4575 u_int32_t *tl; 4576 struct nfsrv_descript nfsd; 4577 struct nfsrv_descript *nd = &nfsd; 4578 u_char *cp, *cp2; 4579 int error, cnt, len, setnil; 4580 u_int32_t *opcntp; 4581 4582 nfscl_reqstart(nd, NFSPROC_PUTROOTFH, nmp, NULL, 0, &opcntp, NULL, 0, 4583 0, false); 4584 cp = dirpath; 4585 cnt = 0; 4586 do { 4587 setnil = 0; 4588 while (*cp == '/') 4589 cp++; 4590 cp2 = cp; 4591 while (*cp2 != '\0' && *cp2 != '/') 4592 cp2++; 4593 if (*cp2 == '/') { 4594 setnil = 1; 4595 *cp2 = '\0'; 4596 } 4597 if (cp2 != cp) { 4598 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 4599 *tl = txdr_unsigned(NFSV4OP_LOOKUP); 4600 nfsm_strtom(nd, cp, strlen(cp)); 4601 cnt++; 4602 } 4603 if (setnil) 4604 *cp2++ = '/'; 4605 cp = cp2; 4606 } while (*cp != '\0'); 4607 if (NFSHASNFSV4N(nmp)) 4608 /* Has a Sequence Op done by nfscl_reqstart(). */ 4609 *opcntp = txdr_unsigned(3 + cnt); 4610 else 4611 *opcntp = txdr_unsigned(2 + cnt); 4612 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 4613 *tl = txdr_unsigned(NFSV4OP_GETFH); 4614 nd->nd_flag |= ND_USEGSSNAME; 4615 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 4616 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4617 if (error) 4618 return (error); 4619 if (nd->nd_repstat == 0) { 4620 NFSM_DISSECT(tl, u_int32_t *, (3 + 2 * cnt) * NFSX_UNSIGNED); 4621 tl += (2 + 2 * cnt); 4622 if ((len = fxdr_unsigned(int, *tl)) <= 0 || 4623 len > NFSX_FHMAX) { 4624 nd->nd_repstat = NFSERR_BADXDR; 4625 } else { 4626 nd->nd_repstat = nfsrv_mtostr(nd, nmp->nm_fh, len); 4627 if (nd->nd_repstat == 0) 4628 nmp->nm_fhsize = len; 4629 } 4630 } 4631 error = nd->nd_repstat; 4632 nfsmout: 4633 m_freem(nd->nd_mrep); 4634 return (error); 4635 } 4636 4637 /* 4638 * This function performs the Delegreturn RPC. 4639 */ 4640 int 4641 nfsrpc_delegreturn(struct nfscldeleg *dp, struct ucred *cred, 4642 struct nfsmount *nmp, NFSPROC_T *p, int syscred) 4643 { 4644 u_int32_t *tl; 4645 struct nfsrv_descript nfsd; 4646 struct nfsrv_descript *nd = &nfsd; 4647 int error; 4648 4649 nfscl_reqstart(nd, NFSPROC_DELEGRETURN, nmp, dp->nfsdl_fh, 4650 dp->nfsdl_fhlen, NULL, NULL, 0, 0, false); 4651 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID); 4652 if (NFSHASNFSV4N(nmp)) 4653 *tl++ = 0; 4654 else 4655 *tl++ = dp->nfsdl_stateid.seqid; 4656 *tl++ = dp->nfsdl_stateid.other[0]; 4657 *tl++ = dp->nfsdl_stateid.other[1]; 4658 *tl = dp->nfsdl_stateid.other[2]; 4659 if (syscred) 4660 nd->nd_flag |= ND_USEGSSNAME; 4661 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 4662 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4663 if (error) 4664 return (error); 4665 error = nd->nd_repstat; 4666 m_freem(nd->nd_mrep); 4667 return (error); 4668 } 4669 4670 /* 4671 * nfs getacl call. 4672 */ 4673 int 4674 nfsrpc_getacl(vnode_t vp, struct ucred *cred, NFSPROC_T *p, 4675 struct acl *aclp, void *stuff) 4676 { 4677 struct nfsrv_descript nfsd, *nd = &nfsd; 4678 int error; 4679 nfsattrbit_t attrbits; 4680 struct nfsmount *nmp = VFSTONFS(vp->v_mount); 4681 4682 if (nfsrv_useacl == 0 || !NFSHASNFSV4(nmp)) 4683 return (EOPNOTSUPP); 4684 NFSCL_REQSTART(nd, NFSPROC_GETACL, vp); 4685 NFSZERO_ATTRBIT(&attrbits); 4686 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_ACL); 4687 (void) nfsrv_putattrbit(nd, &attrbits); 4688 error = nfscl_request(nd, vp, p, cred, stuff); 4689 if (error) 4690 return (error); 4691 if (!nd->nd_repstat) 4692 error = nfsv4_loadattr(nd, vp, NULL, NULL, NULL, 0, NULL, 4693 NULL, NULL, NULL, aclp, 0, NULL, NULL, NULL, p, cred); 4694 else 4695 error = nd->nd_repstat; 4696 m_freem(nd->nd_mrep); 4697 return (error); 4698 } 4699 4700 /* 4701 * nfs setacl call. 4702 */ 4703 int 4704 nfsrpc_setacl(vnode_t vp, struct ucred *cred, NFSPROC_T *p, 4705 struct acl *aclp, void *stuff) 4706 { 4707 int error; 4708 struct nfsmount *nmp = VFSTONFS(vp->v_mount); 4709 4710 if (nfsrv_useacl == 0 || !NFSHASNFSV4(nmp)) 4711 return (EOPNOTSUPP); 4712 error = nfsrpc_setattr(vp, NULL, aclp, cred, p, NULL, NULL, stuff); 4713 return (error); 4714 } 4715 4716 /* 4717 * nfs setacl call. 4718 */ 4719 static int 4720 nfsrpc_setaclrpc(vnode_t vp, struct ucred *cred, NFSPROC_T *p, 4721 struct acl *aclp, nfsv4stateid_t *stateidp, void *stuff) 4722 { 4723 struct nfsrv_descript nfsd, *nd = &nfsd; 4724 int error; 4725 nfsattrbit_t attrbits; 4726 struct nfsmount *nmp = VFSTONFS(vp->v_mount); 4727 4728 if (!NFSHASNFSV4(nmp)) 4729 return (EOPNOTSUPP); 4730 NFSCL_REQSTART(nd, NFSPROC_SETACL, vp); 4731 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID); 4732 NFSZERO_ATTRBIT(&attrbits); 4733 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_ACL); 4734 (void) nfsv4_fillattr(nd, vp->v_mount, vp, aclp, NULL, NULL, 0, 4735 &attrbits, NULL, NULL, 0, 0, 0, 0, (uint64_t)0, NULL); 4736 error = nfscl_request(nd, vp, p, cred, stuff); 4737 if (error) 4738 return (error); 4739 /* Don't care about the pre/postop attributes */ 4740 m_freem(nd->nd_mrep); 4741 return (nd->nd_repstat); 4742 } 4743 4744 /* 4745 * Do the NFSv4.1 Exchange ID. 4746 */ 4747 int 4748 nfsrpc_exchangeid(struct nfsmount *nmp, struct nfsclclient *clp, 4749 struct nfssockreq *nrp, int minorvers, uint32_t exchflags, 4750 struct nfsclds **dspp, struct ucred *cred, NFSPROC_T *p) 4751 { 4752 uint32_t *tl, v41flags; 4753 struct nfsrv_descript nfsd; 4754 struct nfsrv_descript *nd = &nfsd; 4755 struct nfsclds *dsp; 4756 struct timespec verstime; 4757 int error, len; 4758 4759 *dspp = NULL; 4760 if (minorvers == 0) 4761 minorvers = nmp->nm_minorvers; 4762 nfscl_reqstart(nd, NFSPROC_EXCHANGEID, nmp, NULL, 0, NULL, NULL, 4763 NFS_VER4, minorvers, false); 4764 NFSM_BUILD(tl, uint32_t *, 2 * NFSX_UNSIGNED); 4765 *tl++ = txdr_unsigned(nfsboottime.tv_sec); /* Client owner */ 4766 *tl = txdr_unsigned(clp->nfsc_rev); 4767 (void) nfsm_strtom(nd, clp->nfsc_id, clp->nfsc_idlen); 4768 4769 NFSM_BUILD(tl, uint32_t *, 3 * NFSX_UNSIGNED); 4770 *tl++ = txdr_unsigned(exchflags); 4771 *tl++ = txdr_unsigned(NFSV4EXCH_SP4NONE); 4772 4773 /* Set the implementation id4 */ 4774 *tl = txdr_unsigned(1); 4775 (void) nfsm_strtom(nd, "freebsd.org", strlen("freebsd.org")); 4776 (void) nfsm_strtom(nd, version, strlen(version)); 4777 NFSM_BUILD(tl, uint32_t *, NFSX_V4TIME); 4778 verstime.tv_sec = 1293840000; /* Jan 1, 2011 */ 4779 verstime.tv_nsec = 0; 4780 txdr_nfsv4time(&verstime, tl); 4781 nd->nd_flag |= ND_USEGSSNAME; 4782 error = newnfs_request(nd, nmp, NULL, nrp, NULL, p, cred, 4783 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4784 NFSCL_DEBUG(1, "exchangeid err=%d reps=%d\n", error, 4785 (int)nd->nd_repstat); 4786 if (error != 0) 4787 return (error); 4788 if (nd->nd_repstat == 0) { 4789 NFSM_DISSECT(tl, uint32_t *, 6 * NFSX_UNSIGNED + NFSX_HYPER); 4790 len = fxdr_unsigned(int, *(tl + 7)); 4791 if (len < 0 || len > NFSV4_OPAQUELIMIT) { 4792 error = NFSERR_BADXDR; 4793 goto nfsmout; 4794 } 4795 dsp = malloc(sizeof(struct nfsclds) + len + 1, M_NFSCLDS, 4796 M_WAITOK | M_ZERO); 4797 dsp->nfsclds_expire = NFSD_MONOSEC + clp->nfsc_renew; 4798 dsp->nfsclds_servownlen = len; 4799 dsp->nfsclds_sess.nfsess_clientid.lval[0] = *tl++; 4800 dsp->nfsclds_sess.nfsess_clientid.lval[1] = *tl++; 4801 dsp->nfsclds_sess.nfsess_sequenceid = 4802 fxdr_unsigned(uint32_t, *tl++); 4803 v41flags = fxdr_unsigned(uint32_t, *tl); 4804 if ((v41flags & NFSV4EXCH_USEPNFSMDS) != 0 && 4805 NFSHASPNFSOPT(nmp)) { 4806 NFSCL_DEBUG(1, "set PNFS\n"); 4807 NFSLOCKMNT(nmp); 4808 nmp->nm_state |= NFSSTA_PNFS; 4809 NFSUNLOCKMNT(nmp); 4810 dsp->nfsclds_flags |= NFSCLDS_MDS; 4811 } 4812 if ((v41flags & NFSV4EXCH_USEPNFSDS) != 0) 4813 dsp->nfsclds_flags |= NFSCLDS_DS; 4814 if (minorvers == NFSV42_MINORVERSION) 4815 dsp->nfsclds_flags |= NFSCLDS_MINORV2; 4816 if (len > 0) 4817 nd->nd_repstat = nfsrv_mtostr(nd, 4818 dsp->nfsclds_serverown, len); 4819 if (nd->nd_repstat == 0) { 4820 mtx_init(&dsp->nfsclds_mtx, "nfsds", NULL, MTX_DEF); 4821 mtx_init(&dsp->nfsclds_sess.nfsess_mtx, "nfssession", 4822 NULL, MTX_DEF); 4823 nfscl_initsessionslots(&dsp->nfsclds_sess); 4824 *dspp = dsp; 4825 } else 4826 free(dsp, M_NFSCLDS); 4827 } 4828 error = nd->nd_repstat; 4829 nfsmout: 4830 m_freem(nd->nd_mrep); 4831 return (error); 4832 } 4833 4834 /* 4835 * Do the NFSv4.1 Create Session. 4836 */ 4837 int 4838 nfsrpc_createsession(struct nfsmount *nmp, struct nfsclsession *sep, 4839 struct nfssockreq *nrp, struct nfsclds *dsp, uint32_t sequenceid, int mds, 4840 struct ucred *cred, NFSPROC_T *p) 4841 { 4842 uint32_t crflags, maxval, *tl; 4843 struct nfsrv_descript nfsd; 4844 struct nfsrv_descript *nd = &nfsd; 4845 int error, irdcnt, minorvers; 4846 4847 /* Make sure nm_rsize, nm_wsize is set. */ 4848 if (nmp->nm_rsize > NFS_MAXBSIZE || nmp->nm_rsize == 0) 4849 nmp->nm_rsize = NFS_MAXBSIZE; 4850 if (nmp->nm_wsize > NFS_MAXBSIZE || nmp->nm_wsize == 0) 4851 nmp->nm_wsize = NFS_MAXBSIZE; 4852 if (dsp == NULL) 4853 minorvers = nmp->nm_minorvers; 4854 else if ((dsp->nfsclds_flags & NFSCLDS_MINORV2) != 0) 4855 minorvers = NFSV42_MINORVERSION; 4856 else 4857 minorvers = NFSV41_MINORVERSION; 4858 nfscl_reqstart(nd, NFSPROC_CREATESESSION, nmp, NULL, 0, NULL, NULL, 4859 NFS_VER4, minorvers, false); 4860 NFSM_BUILD(tl, uint32_t *, 4 * NFSX_UNSIGNED); 4861 *tl++ = sep->nfsess_clientid.lval[0]; 4862 *tl++ = sep->nfsess_clientid.lval[1]; 4863 *tl++ = txdr_unsigned(sequenceid); 4864 crflags = (NFSMNT_RDONLY(nmp->nm_mountp) ? 0 : NFSV4CRSESS_PERSIST); 4865 if (nfscl_enablecallb != 0 && nfs_numnfscbd > 0 && mds != 0) 4866 crflags |= NFSV4CRSESS_CONNBACKCHAN; 4867 *tl = txdr_unsigned(crflags); 4868 4869 /* Fill in fore channel attributes. */ 4870 NFSM_BUILD(tl, uint32_t *, 7 * NFSX_UNSIGNED); 4871 *tl++ = 0; /* Header pad size */ 4872 if ((nd->nd_flag & ND_NFSV42) != 0 && mds != 0 && sb_max_adj >= 4873 nmp->nm_wsize && sb_max_adj >= nmp->nm_rsize) { 4874 /* 4875 * NFSv4.2 Extended Attribute operations may want to do 4876 * requests/replies that are larger than nm_rsize/nm_wsize. 4877 */ 4878 *tl++ = txdr_unsigned(sb_max_adj - NFS_MAXXDR); 4879 *tl++ = txdr_unsigned(sb_max_adj - NFS_MAXXDR); 4880 } else { 4881 *tl++ = txdr_unsigned(nmp->nm_wsize + NFS_MAXXDR); 4882 *tl++ = txdr_unsigned(nmp->nm_rsize + NFS_MAXXDR); 4883 } 4884 *tl++ = txdr_unsigned(4096); /* Max response size cached */ 4885 *tl++ = txdr_unsigned(20); /* Max operations */ 4886 *tl++ = txdr_unsigned(64); /* Max slots */ 4887 *tl = 0; /* No rdma ird */ 4888 4889 /* Fill in back channel attributes. */ 4890 NFSM_BUILD(tl, uint32_t *, 7 * NFSX_UNSIGNED); 4891 *tl++ = 0; /* Header pad size */ 4892 *tl++ = txdr_unsigned(10000); /* Max request size */ 4893 *tl++ = txdr_unsigned(10000); /* Max response size */ 4894 *tl++ = txdr_unsigned(4096); /* Max response size cached */ 4895 *tl++ = txdr_unsigned(4); /* Max operations */ 4896 *tl++ = txdr_unsigned(NFSV4_CBSLOTS); /* Max slots */ 4897 *tl = 0; /* No rdma ird */ 4898 4899 NFSM_BUILD(tl, uint32_t *, 8 * NFSX_UNSIGNED); 4900 *tl++ = txdr_unsigned(NFS_CALLBCKPROG); /* Call back prog # */ 4901 4902 /* Allow AUTH_SYS callbacks as uid, gid == 0. */ 4903 *tl++ = txdr_unsigned(1); /* Auth_sys only */ 4904 *tl++ = txdr_unsigned(AUTH_SYS); /* AUTH_SYS type */ 4905 *tl++ = txdr_unsigned(nfsboottime.tv_sec); /* time stamp */ 4906 *tl++ = 0; /* Null machine name */ 4907 *tl++ = 0; /* Uid == 0 */ 4908 *tl++ = 0; /* Gid == 0 */ 4909 *tl = 0; /* No additional gids */ 4910 nd->nd_flag |= ND_USEGSSNAME; 4911 error = newnfs_request(nd, nmp, NULL, nrp, NULL, p, cred, NFS_PROG, 4912 NFS_VER4, NULL, 1, NULL, NULL); 4913 if (error != 0) 4914 return (error); 4915 if (nd->nd_repstat == 0) { 4916 NFSM_DISSECT(tl, uint32_t *, NFSX_V4SESSIONID + 4917 2 * NFSX_UNSIGNED); 4918 bcopy(tl, sep->nfsess_sessionid, NFSX_V4SESSIONID); 4919 tl += NFSX_V4SESSIONID / NFSX_UNSIGNED; 4920 sep->nfsess_sequenceid = fxdr_unsigned(uint32_t, *tl++); 4921 crflags = fxdr_unsigned(uint32_t, *tl); 4922 if ((crflags & NFSV4CRSESS_PERSIST) != 0 && mds != 0) { 4923 NFSLOCKMNT(nmp); 4924 nmp->nm_state |= NFSSTA_SESSPERSIST; 4925 NFSUNLOCKMNT(nmp); 4926 } 4927 4928 /* Get the fore channel slot count. */ 4929 NFSM_DISSECT(tl, uint32_t *, 7 * NFSX_UNSIGNED); 4930 tl++; /* Skip the header pad size. */ 4931 4932 /* Make sure nm_wsize is small enough. */ 4933 maxval = fxdr_unsigned(uint32_t, *tl++); 4934 while (maxval < nmp->nm_wsize + NFS_MAXXDR) { 4935 if (nmp->nm_wsize > 8096) 4936 nmp->nm_wsize /= 2; 4937 else 4938 break; 4939 } 4940 sep->nfsess_maxreq = maxval; 4941 4942 /* Make sure nm_rsize is small enough. */ 4943 maxval = fxdr_unsigned(uint32_t, *tl++); 4944 while (maxval < nmp->nm_rsize + NFS_MAXXDR) { 4945 if (nmp->nm_rsize > 8096) 4946 nmp->nm_rsize /= 2; 4947 else 4948 break; 4949 } 4950 sep->nfsess_maxresp = maxval; 4951 4952 sep->nfsess_maxcache = fxdr_unsigned(int, *tl++); 4953 tl++; 4954 sep->nfsess_foreslots = fxdr_unsigned(uint16_t, *tl++); 4955 NFSCL_DEBUG(4, "fore slots=%d\n", (int)sep->nfsess_foreslots); 4956 irdcnt = fxdr_unsigned(int, *tl); 4957 if (irdcnt > 0) 4958 NFSM_DISSECT(tl, uint32_t *, irdcnt * NFSX_UNSIGNED); 4959 4960 /* and the back channel slot count. */ 4961 NFSM_DISSECT(tl, uint32_t *, 7 * NFSX_UNSIGNED); 4962 tl += 5; 4963 sep->nfsess_backslots = fxdr_unsigned(uint16_t, *tl); 4964 NFSCL_DEBUG(4, "back slots=%d\n", (int)sep->nfsess_backslots); 4965 } 4966 error = nd->nd_repstat; 4967 nfsmout: 4968 m_freem(nd->nd_mrep); 4969 return (error); 4970 } 4971 4972 /* 4973 * Do the NFSv4.1 Destroy Session. 4974 */ 4975 int 4976 nfsrpc_destroysession(struct nfsmount *nmp, struct nfsclclient *clp, 4977 struct ucred *cred, NFSPROC_T *p) 4978 { 4979 uint32_t *tl; 4980 struct nfsrv_descript nfsd; 4981 struct nfsrv_descript *nd = &nfsd; 4982 int error; 4983 struct nfsclsession *tsep; 4984 4985 nfscl_reqstart(nd, NFSPROC_DESTROYSESSION, nmp, NULL, 0, NULL, NULL, 0, 4986 0, false); 4987 NFSM_BUILD(tl, uint32_t *, NFSX_V4SESSIONID); 4988 tsep = nfsmnt_mdssession(nmp); 4989 bcopy(tsep->nfsess_sessionid, tl, NFSX_V4SESSIONID); 4990 nd->nd_flag |= ND_USEGSSNAME; 4991 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 4992 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4993 if (error != 0) 4994 return (error); 4995 error = nd->nd_repstat; 4996 m_freem(nd->nd_mrep); 4997 return (error); 4998 } 4999 5000 /* 5001 * Do the NFSv4.1 Destroy Client. 5002 */ 5003 int 5004 nfsrpc_destroyclient(struct nfsmount *nmp, struct nfsclclient *clp, 5005 struct ucred *cred, NFSPROC_T *p) 5006 { 5007 uint32_t *tl; 5008 struct nfsrv_descript nfsd; 5009 struct nfsrv_descript *nd = &nfsd; 5010 int error; 5011 struct nfsclsession *tsep; 5012 5013 nfscl_reqstart(nd, NFSPROC_DESTROYCLIENT, nmp, NULL, 0, NULL, NULL, 0, 5014 0, false); 5015 NFSM_BUILD(tl, uint32_t *, 2 * NFSX_UNSIGNED); 5016 tsep = nfsmnt_mdssession(nmp); 5017 *tl++ = tsep->nfsess_clientid.lval[0]; 5018 *tl = tsep->nfsess_clientid.lval[1]; 5019 nd->nd_flag |= ND_USEGSSNAME; 5020 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 5021 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 5022 if (error != 0) 5023 return (error); 5024 error = nd->nd_repstat; 5025 m_freem(nd->nd_mrep); 5026 return (error); 5027 } 5028 5029 /* 5030 * Do the NFSv4.1 LayoutGet. 5031 */ 5032 static int 5033 nfsrpc_layoutget(struct nfsmount *nmp, uint8_t *fhp, int fhlen, int iomode, 5034 uint64_t offset, uint64_t len, uint64_t minlen, int layouttype, 5035 int layoutlen, nfsv4stateid_t *stateidp, int *retonclosep, 5036 struct nfsclflayouthead *flhp, struct ucred *cred, NFSPROC_T *p, 5037 void *stuff) 5038 { 5039 struct nfsrv_descript nfsd, *nd = &nfsd; 5040 int error; 5041 5042 nfscl_reqstart(nd, NFSPROC_LAYOUTGET, nmp, fhp, fhlen, NULL, NULL, 0, 5043 0, false); 5044 nfsrv_setuplayoutget(nd, iomode, offset, len, minlen, stateidp, 5045 layouttype, layoutlen, 0); 5046 nd->nd_flag |= ND_USEGSSNAME; 5047 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 5048 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 5049 NFSCL_DEBUG(4, "layget err=%d st=%d\n", error, nd->nd_repstat); 5050 if (error != 0) 5051 return (error); 5052 if (nd->nd_repstat == 0) 5053 error = nfsrv_parselayoutget(nmp, nd, stateidp, retonclosep, 5054 flhp); 5055 if (error == 0 && nd->nd_repstat != 0) 5056 error = nd->nd_repstat; 5057 m_freem(nd->nd_mrep); 5058 return (error); 5059 } 5060 5061 /* 5062 * Do the NFSv4.1 Get Device Info. 5063 */ 5064 int 5065 nfsrpc_getdeviceinfo(struct nfsmount *nmp, uint8_t *deviceid, int layouttype, 5066 uint32_t *notifybitsp, struct nfscldevinfo **ndip, struct ucred *cred, 5067 NFSPROC_T *p) 5068 { 5069 uint32_t cnt, *tl, vers, minorvers; 5070 struct nfsrv_descript nfsd; 5071 struct nfsrv_descript *nd = &nfsd; 5072 struct sockaddr_in sin, ssin; 5073 struct sockaddr_in6 sin6, ssin6; 5074 struct nfsclds *dsp = NULL, **dspp, **gotdspp; 5075 struct nfscldevinfo *ndi; 5076 int addrcnt = 0, bitcnt, error, gotminor, gotvers, i, isudp, j; 5077 int stripecnt; 5078 uint8_t stripeindex; 5079 sa_family_t af, safilled; 5080 5081 ssin.sin_port = 0; /* To shut up compiler. */ 5082 ssin.sin_addr.s_addr = 0; /* ditto */ 5083 *ndip = NULL; 5084 ndi = NULL; 5085 gotdspp = NULL; 5086 nfscl_reqstart(nd, NFSPROC_GETDEVICEINFO, nmp, NULL, 0, NULL, NULL, 0, 5087 0, false); 5088 NFSM_BUILD(tl, uint32_t *, NFSX_V4DEVICEID + 3 * NFSX_UNSIGNED); 5089 NFSBCOPY(deviceid, tl, NFSX_V4DEVICEID); 5090 tl += (NFSX_V4DEVICEID / NFSX_UNSIGNED); 5091 *tl++ = txdr_unsigned(layouttype); 5092 *tl++ = txdr_unsigned(100000); 5093 if (notifybitsp != NULL && *notifybitsp != 0) { 5094 *tl = txdr_unsigned(1); /* One word of bits. */ 5095 NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED); 5096 *tl = txdr_unsigned(*notifybitsp); 5097 } else 5098 *tl = txdr_unsigned(0); 5099 nd->nd_flag |= ND_USEGSSNAME; 5100 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 5101 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 5102 if (error != 0) 5103 return (error); 5104 if (nd->nd_repstat == 0) { 5105 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED); 5106 if (layouttype != fxdr_unsigned(int, *tl)) 5107 printf("EEK! devinfo layout type not same!\n"); 5108 if (layouttype == NFSLAYOUT_NFSV4_1_FILES) { 5109 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 5110 stripecnt = fxdr_unsigned(int, *tl); 5111 NFSCL_DEBUG(4, "stripecnt=%d\n", stripecnt); 5112 if (stripecnt < 1 || stripecnt > 4096) { 5113 printf("pNFS File layout devinfo stripecnt %d:" 5114 " out of range\n", stripecnt); 5115 error = NFSERR_BADXDR; 5116 goto nfsmout; 5117 } 5118 NFSM_DISSECT(tl, uint32_t *, (stripecnt + 1) * 5119 NFSX_UNSIGNED); 5120 addrcnt = fxdr_unsigned(int, *(tl + stripecnt)); 5121 NFSCL_DEBUG(4, "addrcnt=%d\n", addrcnt); 5122 if (addrcnt < 1 || addrcnt > 128) { 5123 printf("NFS devinfo addrcnt %d: out of range\n", 5124 addrcnt); 5125 error = NFSERR_BADXDR; 5126 goto nfsmout; 5127 } 5128 5129 /* 5130 * Now we know how many stripe indices and addresses, so 5131 * we can allocate the structure the correct size. 5132 */ 5133 i = (stripecnt * sizeof(uint8_t)) / 5134 sizeof(struct nfsclds *) + 1; 5135 NFSCL_DEBUG(4, "stripeindices=%d\n", i); 5136 ndi = malloc(sizeof(*ndi) + (addrcnt + i) * 5137 sizeof(struct nfsclds *), M_NFSDEVINFO, M_WAITOK | 5138 M_ZERO); 5139 NFSBCOPY(deviceid, ndi->nfsdi_deviceid, 5140 NFSX_V4DEVICEID); 5141 ndi->nfsdi_refcnt = 0; 5142 ndi->nfsdi_flags = NFSDI_FILELAYOUT; 5143 ndi->nfsdi_stripecnt = stripecnt; 5144 ndi->nfsdi_addrcnt = addrcnt; 5145 /* Fill in the stripe indices. */ 5146 for (i = 0; i < stripecnt; i++) { 5147 stripeindex = fxdr_unsigned(uint8_t, *tl++); 5148 NFSCL_DEBUG(4, "stripeind=%d\n", stripeindex); 5149 if (stripeindex >= addrcnt) { 5150 printf("pNFS File Layout devinfo" 5151 " stripeindex %d: too big\n", 5152 (int)stripeindex); 5153 error = NFSERR_BADXDR; 5154 goto nfsmout; 5155 } 5156 nfsfldi_setstripeindex(ndi, i, stripeindex); 5157 } 5158 } else if (layouttype == NFSLAYOUT_FLEXFILE) { 5159 /* For Flex File, we only get one address list. */ 5160 ndi = malloc(sizeof(*ndi) + sizeof(struct nfsclds *), 5161 M_NFSDEVINFO, M_WAITOK | M_ZERO); 5162 NFSBCOPY(deviceid, ndi->nfsdi_deviceid, 5163 NFSX_V4DEVICEID); 5164 ndi->nfsdi_refcnt = 0; 5165 ndi->nfsdi_flags = NFSDI_FLEXFILE; 5166 addrcnt = ndi->nfsdi_addrcnt = 1; 5167 } 5168 5169 /* Now, dissect the server address(es). */ 5170 safilled = AF_UNSPEC; 5171 for (i = 0; i < addrcnt; i++) { 5172 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 5173 cnt = fxdr_unsigned(uint32_t, *tl); 5174 if (cnt == 0) { 5175 printf("NFS devinfo 0 len addrlist\n"); 5176 error = NFSERR_BADXDR; 5177 goto nfsmout; 5178 } 5179 dspp = nfsfldi_addr(ndi, i); 5180 safilled = AF_UNSPEC; 5181 for (j = 0; j < cnt; j++) { 5182 error = nfsv4_getipaddr(nd, &sin, &sin6, &af, 5183 &isudp); 5184 if (error != 0 && error != EPERM) { 5185 error = NFSERR_BADXDR; 5186 goto nfsmout; 5187 } 5188 if (error == 0 && isudp == 0) { 5189 /* 5190 * The priority is: 5191 * - Same address family. 5192 * Save the address and dspp, so that 5193 * the connection can be done after 5194 * parsing is complete. 5195 */ 5196 if (safilled == AF_UNSPEC || 5197 (af == nmp->nm_nam->sa_family && 5198 safilled != nmp->nm_nam->sa_family) 5199 ) { 5200 if (af == AF_INET) 5201 ssin = sin; 5202 else 5203 ssin6 = sin6; 5204 safilled = af; 5205 gotdspp = dspp; 5206 } 5207 } 5208 } 5209 } 5210 5211 gotvers = NFS_VER4; /* Default NFSv4.1 for File Layout. */ 5212 gotminor = NFSV41_MINORVERSION; 5213 /* For Flex File, we will take one of the versions to use. */ 5214 if (layouttype == NFSLAYOUT_FLEXFILE) { 5215 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 5216 j = fxdr_unsigned(int, *tl); 5217 if (j < 1 || j > NFSDEV_MAXVERS) { 5218 printf("pNFS: too many versions\n"); 5219 error = NFSERR_BADXDR; 5220 goto nfsmout; 5221 } 5222 gotvers = 0; 5223 gotminor = 0; 5224 for (i = 0; i < j; i++) { 5225 NFSM_DISSECT(tl, uint32_t *, 5 * NFSX_UNSIGNED); 5226 vers = fxdr_unsigned(uint32_t, *tl++); 5227 minorvers = fxdr_unsigned(uint32_t, *tl++); 5228 if (vers == NFS_VER3) 5229 minorvers = 0; 5230 if ((vers == NFS_VER4 && ((minorvers == 5231 NFSV41_MINORVERSION && gotminor == 0) || 5232 minorvers == NFSV42_MINORVERSION)) || 5233 (vers == NFS_VER3 && gotvers == 0)) { 5234 gotvers = vers; 5235 gotminor = minorvers; 5236 /* We'll take this one. */ 5237 ndi->nfsdi_versindex = i; 5238 ndi->nfsdi_vers = vers; 5239 ndi->nfsdi_minorvers = minorvers; 5240 ndi->nfsdi_rsize = fxdr_unsigned( 5241 uint32_t, *tl++); 5242 ndi->nfsdi_wsize = fxdr_unsigned( 5243 uint32_t, *tl++); 5244 if (*tl == newnfs_true) 5245 ndi->nfsdi_flags |= 5246 NFSDI_TIGHTCOUPLED; 5247 else 5248 ndi->nfsdi_flags &= 5249 ~NFSDI_TIGHTCOUPLED; 5250 } 5251 } 5252 if (gotvers == 0) { 5253 printf("pNFS: no NFSv3, NFSv4.1 or NFSv4.2\n"); 5254 error = NFSERR_BADXDR; 5255 goto nfsmout; 5256 } 5257 } 5258 5259 /* And the notify bits. */ 5260 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 5261 bitcnt = fxdr_unsigned(int, *tl); 5262 if (bitcnt > 0) { 5263 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 5264 if (notifybitsp != NULL) 5265 *notifybitsp = 5266 fxdr_unsigned(uint32_t, *tl); 5267 } 5268 if (safilled != AF_UNSPEC) { 5269 KASSERT(ndi != NULL, ("ndi is NULL")); 5270 *ndip = ndi; 5271 } else 5272 error = EPERM; 5273 if (error == 0) { 5274 /* 5275 * Now we can do a TCP connection for the correct 5276 * NFS version and IP address. 5277 */ 5278 error = nfsrpc_fillsa(nmp, &ssin, &ssin6, safilled, 5279 gotvers, gotminor, &dsp, p); 5280 } 5281 if (error == 0) { 5282 KASSERT(gotdspp != NULL, ("gotdspp is NULL")); 5283 *gotdspp = dsp; 5284 } 5285 } 5286 if (nd->nd_repstat != 0 && error == 0) 5287 error = nd->nd_repstat; 5288 nfsmout: 5289 if (error != 0 && ndi != NULL) 5290 nfscl_freedevinfo(ndi); 5291 m_freem(nd->nd_mrep); 5292 return (error); 5293 } 5294 5295 /* 5296 * Do the NFSv4.1 LayoutCommit. 5297 */ 5298 int 5299 nfsrpc_layoutcommit(struct nfsmount *nmp, uint8_t *fh, int fhlen, int reclaim, 5300 uint64_t off, uint64_t len, uint64_t lastbyte, nfsv4stateid_t *stateidp, 5301 int layouttype, struct ucred *cred, NFSPROC_T *p, void *stuff) 5302 { 5303 uint32_t *tl; 5304 struct nfsrv_descript nfsd, *nd = &nfsd; 5305 int error; 5306 5307 nfscl_reqstart(nd, NFSPROC_LAYOUTCOMMIT, nmp, fh, fhlen, NULL, NULL, 5308 0, 0, false); 5309 NFSM_BUILD(tl, uint32_t *, 5 * NFSX_UNSIGNED + 3 * NFSX_HYPER + 5310 NFSX_STATEID); 5311 txdr_hyper(off, tl); 5312 tl += 2; 5313 txdr_hyper(len, tl); 5314 tl += 2; 5315 if (reclaim != 0) 5316 *tl++ = newnfs_true; 5317 else 5318 *tl++ = newnfs_false; 5319 *tl++ = txdr_unsigned(stateidp->seqid); 5320 *tl++ = stateidp->other[0]; 5321 *tl++ = stateidp->other[1]; 5322 *tl++ = stateidp->other[2]; 5323 *tl++ = newnfs_true; 5324 if (lastbyte < off) 5325 lastbyte = off; 5326 else if (lastbyte >= (off + len)) 5327 lastbyte = off + len - 1; 5328 txdr_hyper(lastbyte, tl); 5329 tl += 2; 5330 *tl++ = newnfs_false; 5331 *tl++ = txdr_unsigned(layouttype); 5332 /* All supported layouts are 0 length. */ 5333 *tl = txdr_unsigned(0); 5334 nd->nd_flag |= ND_USEGSSNAME; 5335 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 5336 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 5337 if (error != 0) 5338 return (error); 5339 error = nd->nd_repstat; 5340 m_freem(nd->nd_mrep); 5341 return (error); 5342 } 5343 5344 /* 5345 * Do the NFSv4.1 LayoutReturn. 5346 */ 5347 int 5348 nfsrpc_layoutreturn(struct nfsmount *nmp, uint8_t *fh, int fhlen, int reclaim, 5349 int layouttype, uint32_t iomode, int layoutreturn, uint64_t offset, 5350 uint64_t len, nfsv4stateid_t *stateidp, struct ucred *cred, NFSPROC_T *p, 5351 uint32_t stat, uint32_t op, char *devid) 5352 { 5353 uint32_t *tl; 5354 struct nfsrv_descript nfsd, *nd = &nfsd; 5355 uint64_t tu64; 5356 int error; 5357 5358 nfscl_reqstart(nd, NFSPROC_LAYOUTRETURN, nmp, fh, fhlen, NULL, NULL, 5359 0, 0, false); 5360 NFSM_BUILD(tl, uint32_t *, 4 * NFSX_UNSIGNED); 5361 if (reclaim != 0) 5362 *tl++ = newnfs_true; 5363 else 5364 *tl++ = newnfs_false; 5365 *tl++ = txdr_unsigned(layouttype); 5366 *tl++ = txdr_unsigned(iomode); 5367 *tl = txdr_unsigned(layoutreturn); 5368 if (layoutreturn == NFSLAYOUTRETURN_FILE) { 5369 NFSM_BUILD(tl, uint32_t *, 2 * NFSX_HYPER + NFSX_STATEID + 5370 NFSX_UNSIGNED); 5371 txdr_hyper(offset, tl); 5372 tl += 2; 5373 txdr_hyper(len, tl); 5374 tl += 2; 5375 NFSCL_DEBUG(4, "layoutret stseq=%d\n", (int)stateidp->seqid); 5376 *tl++ = txdr_unsigned(stateidp->seqid); 5377 *tl++ = stateidp->other[0]; 5378 *tl++ = stateidp->other[1]; 5379 *tl++ = stateidp->other[2]; 5380 if (layouttype == NFSLAYOUT_NFSV4_1_FILES) 5381 *tl = txdr_unsigned(0); 5382 else if (layouttype == NFSLAYOUT_FLEXFILE) { 5383 if (stat != 0) { 5384 *tl = txdr_unsigned(2 * NFSX_HYPER + 5385 NFSX_STATEID + NFSX_V4DEVICEID + 5 * 5386 NFSX_UNSIGNED); 5387 NFSM_BUILD(tl, uint32_t *, 2 * NFSX_HYPER + 5388 NFSX_STATEID + NFSX_V4DEVICEID + 5 * 5389 NFSX_UNSIGNED); 5390 *tl++ = txdr_unsigned(1); /* One error. */ 5391 tu64 = 0; /* Offset. */ 5392 txdr_hyper(tu64, tl); tl += 2; 5393 tu64 = UINT64_MAX; /* Length. */ 5394 txdr_hyper(tu64, tl); tl += 2; 5395 NFSBCOPY(stateidp, tl, NFSX_STATEID); 5396 tl += (NFSX_STATEID / NFSX_UNSIGNED); 5397 *tl++ = txdr_unsigned(1); /* One error. */ 5398 NFSBCOPY(devid, tl, NFSX_V4DEVICEID); 5399 tl += (NFSX_V4DEVICEID / NFSX_UNSIGNED); 5400 *tl++ = txdr_unsigned(stat); 5401 *tl++ = txdr_unsigned(op); 5402 } else { 5403 *tl = txdr_unsigned(2 * NFSX_UNSIGNED); 5404 NFSM_BUILD(tl, uint32_t *, 2 * NFSX_UNSIGNED); 5405 /* No ioerrs. */ 5406 *tl++ = 0; 5407 } 5408 *tl = 0; /* No stats yet. */ 5409 } 5410 } 5411 nd->nd_flag |= ND_USEGSSNAME; 5412 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 5413 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 5414 if (error != 0) 5415 return (error); 5416 if (nd->nd_repstat == 0) { 5417 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 5418 if (*tl != 0) { 5419 NFSM_DISSECT(tl, uint32_t *, NFSX_STATEID); 5420 stateidp->seqid = fxdr_unsigned(uint32_t, *tl++); 5421 stateidp->other[0] = *tl++; 5422 stateidp->other[1] = *tl++; 5423 stateidp->other[2] = *tl; 5424 } 5425 } else 5426 error = nd->nd_repstat; 5427 nfsmout: 5428 m_freem(nd->nd_mrep); 5429 return (error); 5430 } 5431 5432 /* 5433 * Acquire a layout and devinfo, if possible. The caller must have acquired 5434 * a reference count on the nfsclclient structure before calling this. 5435 * Return the layout in lypp with a reference count on it, if successful. 5436 */ 5437 static int 5438 nfsrpc_getlayout(struct nfsmount *nmp, vnode_t vp, struct nfsfh *nfhp, 5439 int iomode, uint32_t *notifybitsp, nfsv4stateid_t *stateidp, uint64_t off, 5440 struct nfscllayout **lypp, struct ucred *cred, NFSPROC_T *p) 5441 { 5442 struct nfscllayout *lyp; 5443 struct nfsclflayout *flp; 5444 struct nfsclflayouthead flh; 5445 int error = 0, islocked, layoutlen, layouttype, recalled, retonclose; 5446 nfsv4stateid_t stateid; 5447 struct nfsclsession *tsep; 5448 5449 *lypp = NULL; 5450 if (NFSHASFLEXFILE(nmp)) 5451 layouttype = NFSLAYOUT_FLEXFILE; 5452 else 5453 layouttype = NFSLAYOUT_NFSV4_1_FILES; 5454 /* 5455 * If lyp is returned non-NULL, there will be a refcnt (shared lock) 5456 * on it, iff flp != NULL or a lock (exclusive lock) on it iff 5457 * flp == NULL. 5458 */ 5459 lyp = nfscl_getlayout(nmp->nm_clp, nfhp->nfh_fh, nfhp->nfh_len, 5460 off, &flp, &recalled); 5461 islocked = 0; 5462 if (lyp == NULL || flp == NULL) { 5463 if (recalled != 0) 5464 return (EIO); 5465 LIST_INIT(&flh); 5466 tsep = nfsmnt_mdssession(nmp); 5467 layoutlen = tsep->nfsess_maxcache - 5468 (NFSX_STATEID + 3 * NFSX_UNSIGNED); 5469 if (lyp == NULL) { 5470 stateid.seqid = 0; 5471 stateid.other[0] = stateidp->other[0]; 5472 stateid.other[1] = stateidp->other[1]; 5473 stateid.other[2] = stateidp->other[2]; 5474 error = nfsrpc_layoutget(nmp, nfhp->nfh_fh, 5475 nfhp->nfh_len, iomode, (uint64_t)0, UINT64_MAX, 5476 (uint64_t)0, layouttype, layoutlen, &stateid, 5477 &retonclose, &flh, cred, p, NULL); 5478 } else { 5479 islocked = 1; 5480 stateid.seqid = lyp->nfsly_stateid.seqid; 5481 stateid.other[0] = lyp->nfsly_stateid.other[0]; 5482 stateid.other[1] = lyp->nfsly_stateid.other[1]; 5483 stateid.other[2] = lyp->nfsly_stateid.other[2]; 5484 error = nfsrpc_layoutget(nmp, nfhp->nfh_fh, 5485 nfhp->nfh_len, iomode, off, UINT64_MAX, 5486 (uint64_t)0, layouttype, layoutlen, &stateid, 5487 &retonclose, &flh, cred, p, NULL); 5488 } 5489 error = nfsrpc_layoutgetres(nmp, vp, nfhp->nfh_fh, 5490 nfhp->nfh_len, &stateid, retonclose, notifybitsp, &lyp, 5491 &flh, layouttype, error, NULL, cred, p); 5492 if (error == 0) 5493 *lypp = lyp; 5494 else if (islocked != 0) 5495 nfscl_rellayout(lyp, 1); 5496 } else 5497 *lypp = lyp; 5498 return (error); 5499 } 5500 5501 /* 5502 * Do a TCP connection plus exchange id and create session. 5503 * If successful, a "struct nfsclds" is linked into the list for the 5504 * mount point and a pointer to it is returned. 5505 */ 5506 static int 5507 nfsrpc_fillsa(struct nfsmount *nmp, struct sockaddr_in *sin, 5508 struct sockaddr_in6 *sin6, sa_family_t af, int vers, int minorvers, 5509 struct nfsclds **dspp, NFSPROC_T *p) 5510 { 5511 struct sockaddr_in *msad, *sad; 5512 struct sockaddr_in6 *msad6, *sad6; 5513 struct nfsclclient *clp; 5514 struct nfssockreq *nrp; 5515 struct nfsclds *dsp, *tdsp; 5516 int error, firsttry; 5517 enum nfsclds_state retv; 5518 uint32_t sequenceid = 0; 5519 5520 KASSERT(nmp->nm_sockreq.nr_cred != NULL, 5521 ("nfsrpc_fillsa: NULL nr_cred")); 5522 NFSLOCKCLSTATE(); 5523 clp = nmp->nm_clp; 5524 NFSUNLOCKCLSTATE(); 5525 if (clp == NULL) 5526 return (EPERM); 5527 if (af == AF_INET) { 5528 NFSLOCKMNT(nmp); 5529 /* 5530 * Check to see if we already have a session for this 5531 * address that is usable for a DS. 5532 * Note that the MDS's address is in a different place 5533 * than the sessions already acquired for DS's. 5534 */ 5535 msad = (struct sockaddr_in *)nmp->nm_sockreq.nr_nam; 5536 tdsp = TAILQ_FIRST(&nmp->nm_sess); 5537 while (tdsp != NULL) { 5538 if (msad != NULL && msad->sin_family == AF_INET && 5539 sin->sin_addr.s_addr == msad->sin_addr.s_addr && 5540 sin->sin_port == msad->sin_port && 5541 (tdsp->nfsclds_flags & NFSCLDS_DS) != 0 && 5542 tdsp->nfsclds_sess.nfsess_defunct == 0) { 5543 *dspp = tdsp; 5544 NFSUNLOCKMNT(nmp); 5545 NFSCL_DEBUG(4, "fnd same addr\n"); 5546 return (0); 5547 } 5548 tdsp = TAILQ_NEXT(tdsp, nfsclds_list); 5549 if (tdsp != NULL && tdsp->nfsclds_sockp != NULL) 5550 msad = (struct sockaddr_in *) 5551 tdsp->nfsclds_sockp->nr_nam; 5552 else 5553 msad = NULL; 5554 } 5555 NFSUNLOCKMNT(nmp); 5556 5557 /* No IP address match, so look for new/trunked one. */ 5558 sad = malloc(sizeof(*sad), M_SONAME, M_WAITOK | M_ZERO); 5559 sad->sin_len = sizeof(*sad); 5560 sad->sin_family = AF_INET; 5561 sad->sin_port = sin->sin_port; 5562 sad->sin_addr.s_addr = sin->sin_addr.s_addr; 5563 nrp = malloc(sizeof(*nrp), M_NFSSOCKREQ, M_WAITOK | M_ZERO); 5564 nrp->nr_nam = (struct sockaddr *)sad; 5565 } else if (af == AF_INET6) { 5566 NFSLOCKMNT(nmp); 5567 /* 5568 * Check to see if we already have a session for this 5569 * address that is usable for a DS. 5570 * Note that the MDS's address is in a different place 5571 * than the sessions already acquired for DS's. 5572 */ 5573 msad6 = (struct sockaddr_in6 *)nmp->nm_sockreq.nr_nam; 5574 tdsp = TAILQ_FIRST(&nmp->nm_sess); 5575 while (tdsp != NULL) { 5576 if (msad6 != NULL && msad6->sin6_family == AF_INET6 && 5577 IN6_ARE_ADDR_EQUAL(&sin6->sin6_addr, 5578 &msad6->sin6_addr) && 5579 sin6->sin6_port == msad6->sin6_port && 5580 (tdsp->nfsclds_flags & NFSCLDS_DS) != 0 && 5581 tdsp->nfsclds_sess.nfsess_defunct == 0) { 5582 *dspp = tdsp; 5583 NFSUNLOCKMNT(nmp); 5584 return (0); 5585 } 5586 tdsp = TAILQ_NEXT(tdsp, nfsclds_list); 5587 if (tdsp != NULL && tdsp->nfsclds_sockp != NULL) 5588 msad6 = (struct sockaddr_in6 *) 5589 tdsp->nfsclds_sockp->nr_nam; 5590 else 5591 msad6 = NULL; 5592 } 5593 NFSUNLOCKMNT(nmp); 5594 5595 /* No IP address match, so look for new/trunked one. */ 5596 sad6 = malloc(sizeof(*sad6), M_SONAME, M_WAITOK | M_ZERO); 5597 sad6->sin6_len = sizeof(*sad6); 5598 sad6->sin6_family = AF_INET6; 5599 sad6->sin6_port = sin6->sin6_port; 5600 NFSBCOPY(&sin6->sin6_addr, &sad6->sin6_addr, 5601 sizeof(struct in6_addr)); 5602 nrp = malloc(sizeof(*nrp), M_NFSSOCKREQ, M_WAITOK | M_ZERO); 5603 nrp->nr_nam = (struct sockaddr *)sad6; 5604 } else 5605 return (EPERM); 5606 5607 nrp->nr_sotype = SOCK_STREAM; 5608 mtx_init(&nrp->nr_mtx, "nfssock", NULL, MTX_DEF); 5609 nrp->nr_prog = NFS_PROG; 5610 nrp->nr_vers = vers; 5611 5612 /* 5613 * Use the credentials that were used for the mount, which are 5614 * in nmp->nm_sockreq.nr_cred for newnfs_connect() etc. 5615 * Ref. counting the credentials with crhold() is probably not 5616 * necessary, since nm_sockreq.nr_cred won't be crfree()'d until 5617 * unmount, but I did it anyhow. 5618 */ 5619 nrp->nr_cred = crhold(nmp->nm_sockreq.nr_cred); 5620 error = newnfs_connect(nmp, nrp, NULL, p, 0); 5621 NFSCL_DEBUG(3, "DS connect=%d\n", error); 5622 5623 dsp = NULL; 5624 /* Now, do the exchangeid and create session. */ 5625 if (error == 0) { 5626 if (vers == NFS_VER4) { 5627 firsttry = 0; 5628 do { 5629 error = nfsrpc_exchangeid(nmp, clp, nrp, 5630 minorvers, NFSV4EXCH_USEPNFSDS, &dsp, 5631 nrp->nr_cred, p); 5632 NFSCL_DEBUG(3, "DS exchangeid=%d\n", error); 5633 if (error == NFSERR_MINORVERMISMATCH) 5634 minorvers = NFSV42_MINORVERSION; 5635 } while (error == NFSERR_MINORVERMISMATCH && 5636 firsttry++ == 0); 5637 if (error != 0) 5638 newnfs_disconnect(nrp); 5639 } else { 5640 dsp = malloc(sizeof(struct nfsclds), M_NFSCLDS, 5641 M_WAITOK | M_ZERO); 5642 dsp->nfsclds_flags |= NFSCLDS_DS; 5643 dsp->nfsclds_expire = INT32_MAX; /* No renews needed. */ 5644 mtx_init(&dsp->nfsclds_mtx, "nfsds", NULL, MTX_DEF); 5645 mtx_init(&dsp->nfsclds_sess.nfsess_mtx, "nfssession", 5646 NULL, MTX_DEF); 5647 } 5648 } 5649 if (error == 0) { 5650 dsp->nfsclds_sockp = nrp; 5651 if (vers == NFS_VER4) { 5652 NFSLOCKMNT(nmp); 5653 retv = nfscl_getsameserver(nmp, dsp, &tdsp, 5654 &sequenceid); 5655 NFSCL_DEBUG(3, "getsame ret=%d\n", retv); 5656 if (retv == NFSDSP_USETHISSESSION && 5657 nfscl_dssameconn != 0) { 5658 NFSLOCKDS(tdsp); 5659 tdsp->nfsclds_flags |= NFSCLDS_SAMECONN; 5660 NFSUNLOCKDS(tdsp); 5661 NFSUNLOCKMNT(nmp); 5662 /* 5663 * If there is already a session for this 5664 * server, use it. 5665 */ 5666 (void)newnfs_disconnect(nrp); 5667 nfscl_freenfsclds(dsp); 5668 *dspp = tdsp; 5669 return (0); 5670 } 5671 if (retv == NFSDSP_NOTFOUND) 5672 sequenceid = 5673 dsp->nfsclds_sess.nfsess_sequenceid; 5674 NFSUNLOCKMNT(nmp); 5675 error = nfsrpc_createsession(nmp, &dsp->nfsclds_sess, 5676 nrp, dsp, sequenceid, 0, nrp->nr_cred, p); 5677 NFSCL_DEBUG(3, "DS createsess=%d\n", error); 5678 } 5679 } else { 5680 NFSFREECRED(nrp->nr_cred); 5681 NFSFREEMUTEX(&nrp->nr_mtx); 5682 free(nrp->nr_nam, M_SONAME); 5683 free(nrp, M_NFSSOCKREQ); 5684 } 5685 if (error == 0) { 5686 NFSCL_DEBUG(3, "add DS session\n"); 5687 /* 5688 * Put it at the end of the list. That way the list 5689 * is ordered by when the entry was added. This matters 5690 * since the one done first is the one that should be 5691 * used for sequencid'ing any subsequent create sessions. 5692 */ 5693 NFSLOCKMNT(nmp); 5694 TAILQ_INSERT_TAIL(&nmp->nm_sess, dsp, nfsclds_list); 5695 NFSUNLOCKMNT(nmp); 5696 *dspp = dsp; 5697 } else if (dsp != NULL) { 5698 newnfs_disconnect(nrp); 5699 nfscl_freenfsclds(dsp); 5700 } 5701 return (error); 5702 } 5703 5704 /* 5705 * Do the NFSv4.1 Reclaim Complete. 5706 */ 5707 int 5708 nfsrpc_reclaimcomplete(struct nfsmount *nmp, struct ucred *cred, NFSPROC_T *p) 5709 { 5710 uint32_t *tl; 5711 struct nfsrv_descript nfsd; 5712 struct nfsrv_descript *nd = &nfsd; 5713 int error; 5714 5715 nfscl_reqstart(nd, NFSPROC_RECLAIMCOMPL, nmp, NULL, 0, NULL, NULL, 0, 5716 0, false); 5717 NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED); 5718 *tl = newnfs_false; 5719 nd->nd_flag |= ND_USEGSSNAME; 5720 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 5721 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 5722 if (error != 0) 5723 return (error); 5724 error = nd->nd_repstat; 5725 m_freem(nd->nd_mrep); 5726 return (error); 5727 } 5728 5729 /* 5730 * Initialize the slot tables for a session. 5731 */ 5732 static void 5733 nfscl_initsessionslots(struct nfsclsession *sep) 5734 { 5735 int i; 5736 5737 for (i = 0; i < NFSV4_CBSLOTS; i++) { 5738 if (sep->nfsess_cbslots[i].nfssl_reply != NULL) 5739 m_freem(sep->nfsess_cbslots[i].nfssl_reply); 5740 NFSBZERO(&sep->nfsess_cbslots[i], sizeof(struct nfsslot)); 5741 } 5742 for (i = 0; i < 64; i++) 5743 sep->nfsess_slotseq[i] = 0; 5744 sep->nfsess_slots = 0; 5745 } 5746 5747 /* 5748 * Called to try and do an I/O operation via an NFSv4.1 Data Server (DS). 5749 */ 5750 int 5751 nfscl_doiods(vnode_t vp, struct uio *uiop, int *iomode, int *must_commit, 5752 uint32_t rwaccess, int docommit, struct ucred *cred, NFSPROC_T *p) 5753 { 5754 struct nfsnode *np = VTONFS(vp); 5755 struct nfsmount *nmp = VFSTONFS(vp->v_mount); 5756 struct nfscllayout *layp; 5757 struct nfscldevinfo *dip; 5758 struct nfsclflayout *rflp; 5759 struct mbuf *m; 5760 struct nfsclwritedsdorpc *drpc, *tdrpc; 5761 nfsv4stateid_t stateid; 5762 struct ucred *newcred; 5763 uint64_t lastbyte, len, off, oresid, xfer; 5764 int eof, error, firstmirror, i, iolaymode, mirrorcnt, recalled, timo; 5765 void *lckp; 5766 uint8_t *dev; 5767 void *iovbase = NULL; 5768 size_t iovlen = 0; 5769 off_t offs = 0; 5770 ssize_t resid = 0; 5771 5772 if (!NFSHASPNFS(nmp) || nfscl_enablecallb == 0 || nfs_numnfscbd == 0 || 5773 (np->n_flag & NNOLAYOUT) != 0) 5774 return (EIO); 5775 /* Now, get a reference cnt on the clientid for this mount. */ 5776 if (nfscl_getref(nmp) == 0) 5777 return (EIO); 5778 5779 /* Find an appropriate stateid. */ 5780 newcred = NFSNEWCRED(cred); 5781 error = nfscl_getstateid(vp, np->n_fhp->nfh_fh, np->n_fhp->nfh_len, 5782 rwaccess, 1, newcred, p, &stateid, &lckp); 5783 if (error != 0) { 5784 NFSFREECRED(newcred); 5785 nfscl_relref(nmp); 5786 return (error); 5787 } 5788 /* Search for a layout for this file. */ 5789 off = uiop->uio_offset; 5790 layp = nfscl_getlayout(nmp->nm_clp, np->n_fhp->nfh_fh, 5791 np->n_fhp->nfh_len, off, &rflp, &recalled); 5792 if (layp == NULL || rflp == NULL) { 5793 if (recalled != 0) { 5794 NFSFREECRED(newcred); 5795 nfscl_relref(nmp); 5796 return (EIO); 5797 } 5798 if (layp != NULL) { 5799 nfscl_rellayout(layp, (rflp == NULL) ? 1 : 0); 5800 layp = NULL; 5801 } 5802 /* Try and get a Layout, if it is supported. */ 5803 if (rwaccess == NFSV4OPEN_ACCESSWRITE || 5804 (np->n_flag & NWRITEOPENED) != 0) 5805 iolaymode = NFSLAYOUTIOMODE_RW; 5806 else 5807 iolaymode = NFSLAYOUTIOMODE_READ; 5808 error = nfsrpc_getlayout(nmp, vp, np->n_fhp, iolaymode, 5809 NULL, &stateid, off, &layp, newcred, p); 5810 if (error != 0) { 5811 NFSLOCKNODE(np); 5812 np->n_flag |= NNOLAYOUT; 5813 NFSUNLOCKNODE(np); 5814 if (lckp != NULL) 5815 nfscl_lockderef(lckp); 5816 NFSFREECRED(newcred); 5817 if (layp != NULL) 5818 nfscl_rellayout(layp, 0); 5819 nfscl_relref(nmp); 5820 return (error); 5821 } 5822 } 5823 5824 /* 5825 * Loop around finding a layout that works for the first part of 5826 * this I/O operation, and then call the function that actually 5827 * does the RPC. 5828 */ 5829 eof = 0; 5830 len = (uint64_t)uiop->uio_resid; 5831 while (len > 0 && error == 0 && eof == 0) { 5832 off = uiop->uio_offset; 5833 error = nfscl_findlayoutforio(layp, off, rwaccess, &rflp); 5834 if (error == 0) { 5835 oresid = xfer = (uint64_t)uiop->uio_resid; 5836 if (xfer > (rflp->nfsfl_end - rflp->nfsfl_off)) 5837 xfer = rflp->nfsfl_end - rflp->nfsfl_off; 5838 /* 5839 * For Flex File layout with mirrored DSs, select one 5840 * of them at random for reads. For writes and commits, 5841 * do all mirrors. 5842 */ 5843 m = NULL; 5844 tdrpc = drpc = NULL; 5845 firstmirror = 0; 5846 mirrorcnt = 1; 5847 if ((layp->nfsly_flags & NFSLY_FLEXFILE) != 0 && 5848 (mirrorcnt = rflp->nfsfl_mirrorcnt) > 1) { 5849 if (rwaccess == NFSV4OPEN_ACCESSREAD) { 5850 firstmirror = arc4random() % mirrorcnt; 5851 mirrorcnt = firstmirror + 1; 5852 } else { 5853 if (docommit == 0) { 5854 /* 5855 * Save values, so uiop can be 5856 * rolled back upon a write 5857 * error. 5858 */ 5859 offs = uiop->uio_offset; 5860 resid = uiop->uio_resid; 5861 iovbase = 5862 uiop->uio_iov->iov_base; 5863 iovlen = uiop->uio_iov->iov_len; 5864 m = nfsm_uiombuflist(uiop, len, 5865 NULL, NULL); 5866 } 5867 tdrpc = drpc = malloc(sizeof(*drpc) * 5868 (mirrorcnt - 1), M_TEMP, M_WAITOK | 5869 M_ZERO); 5870 } 5871 } 5872 for (i = firstmirror; i < mirrorcnt && error == 0; i++){ 5873 if ((layp->nfsly_flags & NFSLY_FLEXFILE) != 0) { 5874 dev = rflp->nfsfl_ffm[i].dev; 5875 dip = nfscl_getdevinfo(nmp->nm_clp, dev, 5876 rflp->nfsfl_ffm[i].devp); 5877 } else { 5878 dev = rflp->nfsfl_dev; 5879 dip = nfscl_getdevinfo(nmp->nm_clp, dev, 5880 rflp->nfsfl_devp); 5881 } 5882 if (dip != NULL) { 5883 if ((rflp->nfsfl_flags & NFSFL_FLEXFILE) 5884 != 0) 5885 error = nfscl_dofflayoutio(vp, 5886 uiop, iomode, must_commit, 5887 &eof, &stateid, rwaccess, 5888 dip, layp, rflp, off, xfer, 5889 i, docommit, m, tdrpc, 5890 newcred, p); 5891 else 5892 error = nfscl_doflayoutio(vp, 5893 uiop, iomode, must_commit, 5894 &eof, &stateid, rwaccess, 5895 dip, layp, rflp, off, xfer, 5896 docommit, newcred, p); 5897 nfscl_reldevinfo(dip); 5898 } else 5899 error = EIO; 5900 tdrpc++; 5901 } 5902 if (m != NULL) 5903 m_freem(m); 5904 tdrpc = drpc; 5905 timo = hz / 50; /* Wait for 20msec. */ 5906 if (timo < 1) 5907 timo = 1; 5908 for (i = firstmirror; i < mirrorcnt - 1 && 5909 tdrpc != NULL; i++, tdrpc++) { 5910 /* 5911 * For the unused drpc entries, both inprog and 5912 * err == 0, so this loop won't break. 5913 */ 5914 while (tdrpc->inprog != 0 && tdrpc->done == 0) 5915 tsleep(&tdrpc->tsk, PVFS, "clrpcio", 5916 timo); 5917 if (error == 0 && tdrpc->err != 0) 5918 error = tdrpc->err; 5919 } 5920 free(drpc, M_TEMP); 5921 if (error == 0) { 5922 if (mirrorcnt > 1 && rwaccess == 5923 NFSV4OPEN_ACCESSWRITE && docommit == 0) { 5924 NFSLOCKCLSTATE(); 5925 layp->nfsly_flags |= NFSLY_WRITTEN; 5926 NFSUNLOCKCLSTATE(); 5927 } 5928 lastbyte = off + xfer - 1; 5929 NFSLOCKCLSTATE(); 5930 if (lastbyte > layp->nfsly_lastbyte) 5931 layp->nfsly_lastbyte = lastbyte; 5932 NFSUNLOCKCLSTATE(); 5933 } else if (error == NFSERR_OPENMODE && 5934 rwaccess == NFSV4OPEN_ACCESSREAD) { 5935 NFSLOCKMNT(nmp); 5936 nmp->nm_state |= NFSSTA_OPENMODE; 5937 NFSUNLOCKMNT(nmp); 5938 } else 5939 error = EIO; 5940 if (error == 0) 5941 len -= (oresid - (uint64_t)uiop->uio_resid); 5942 else if (mirrorcnt > 1 && rwaccess == 5943 NFSV4OPEN_ACCESSWRITE && docommit == 0) { 5944 /* 5945 * In case the rpc gets retried, roll the 5946 * uio fields changed by nfsm_uiombuflist() 5947 * back. 5948 */ 5949 uiop->uio_offset = offs; 5950 uiop->uio_resid = resid; 5951 uiop->uio_iov->iov_base = iovbase; 5952 uiop->uio_iov->iov_len = iovlen; 5953 } 5954 } 5955 } 5956 if (lckp != NULL) 5957 nfscl_lockderef(lckp); 5958 NFSFREECRED(newcred); 5959 nfscl_rellayout(layp, 0); 5960 nfscl_relref(nmp); 5961 return (error); 5962 } 5963 5964 /* 5965 * Make a copy of the mbuf chain and add an mbuf for null padding, as required. 5966 */ 5967 static struct mbuf * 5968 nfsm_copym(struct mbuf *m, int off, int xfer) 5969 { 5970 struct mbuf *m2, *m3, *m4; 5971 uint32_t *tl; 5972 int rem; 5973 5974 m2 = m_copym(m, off, xfer, M_WAITOK); 5975 rem = NFSM_RNDUP(xfer) - xfer; 5976 if (rem > 0) { 5977 /* 5978 * The zero padding to a multiple of 4 bytes is required by 5979 * the XDR. So that the mbufs copied by reference aren't 5980 * modified, add an mbuf with the zero'd bytes to the list. 5981 * rem will be a maximum of 3, so one zero'd uint32_t is 5982 * sufficient. 5983 */ 5984 m3 = m2; 5985 while (m3->m_next != NULL) 5986 m3 = m3->m_next; 5987 NFSMGET(m4); 5988 tl = mtod(m4, uint32_t *); 5989 *tl = 0; 5990 m4->m_len = rem; 5991 m3->m_next = m4; 5992 } 5993 return (m2); 5994 } 5995 5996 /* 5997 * Find a file layout that will handle the first bytes of the requested 5998 * range and return the information from it needed to the I/O operation. 5999 */ 6000 int 6001 nfscl_findlayoutforio(struct nfscllayout *lyp, uint64_t off, uint32_t rwaccess, 6002 struct nfsclflayout **retflpp) 6003 { 6004 struct nfsclflayout *flp, *nflp, *rflp; 6005 uint32_t rw; 6006 6007 rflp = NULL; 6008 rw = rwaccess; 6009 /* For reading, do the Read list first and then the Write list. */ 6010 do { 6011 if (rw == NFSV4OPEN_ACCESSREAD) 6012 flp = LIST_FIRST(&lyp->nfsly_flayread); 6013 else 6014 flp = LIST_FIRST(&lyp->nfsly_flayrw); 6015 while (flp != NULL) { 6016 nflp = LIST_NEXT(flp, nfsfl_list); 6017 if (flp->nfsfl_off > off) 6018 break; 6019 if (flp->nfsfl_end > off && 6020 (rflp == NULL || rflp->nfsfl_end < flp->nfsfl_end)) 6021 rflp = flp; 6022 flp = nflp; 6023 } 6024 if (rw == NFSV4OPEN_ACCESSREAD) 6025 rw = NFSV4OPEN_ACCESSWRITE; 6026 else 6027 rw = 0; 6028 } while (rw != 0); 6029 if (rflp != NULL) { 6030 /* This one covers the most bytes starting at off. */ 6031 *retflpp = rflp; 6032 return (0); 6033 } 6034 return (EIO); 6035 } 6036 6037 /* 6038 * Do I/O using an NFSv4.1 or NFSv4.2 file layout. 6039 */ 6040 static int 6041 nfscl_doflayoutio(vnode_t vp, struct uio *uiop, int *iomode, int *must_commit, 6042 int *eofp, nfsv4stateid_t *stateidp, int rwflag, struct nfscldevinfo *dp, 6043 struct nfscllayout *lyp, struct nfsclflayout *flp, uint64_t off, 6044 uint64_t len, int docommit, struct ucred *cred, NFSPROC_T *p) 6045 { 6046 uint64_t io_off, rel_off, stripe_unit_size, transfer, xfer; 6047 int commit_thru_mds, error, stripe_index, stripe_pos, minorvers; 6048 struct nfsnode *np; 6049 struct nfsfh *fhp; 6050 struct nfsclds **dspp; 6051 6052 np = VTONFS(vp); 6053 rel_off = off - flp->nfsfl_patoff; 6054 stripe_unit_size = (flp->nfsfl_util >> 6) & 0x3ffffff; 6055 stripe_pos = (rel_off / stripe_unit_size + flp->nfsfl_stripe1) % 6056 dp->nfsdi_stripecnt; 6057 transfer = stripe_unit_size - (rel_off % stripe_unit_size); 6058 error = 0; 6059 6060 /* Loop around, doing I/O for each stripe unit. */ 6061 while (len > 0 && error == 0) { 6062 stripe_index = nfsfldi_stripeindex(dp, stripe_pos); 6063 dspp = nfsfldi_addr(dp, stripe_index); 6064 if (((*dspp)->nfsclds_flags & NFSCLDS_MINORV2) != 0) 6065 minorvers = NFSV42_MINORVERSION; 6066 else 6067 minorvers = NFSV41_MINORVERSION; 6068 if (len > transfer && docommit == 0) 6069 xfer = transfer; 6070 else 6071 xfer = len; 6072 if ((flp->nfsfl_util & NFSFLAYUTIL_DENSE) != 0) { 6073 /* Dense layout. */ 6074 if (stripe_pos >= flp->nfsfl_fhcnt) 6075 return (EIO); 6076 fhp = flp->nfsfl_fh[stripe_pos]; 6077 io_off = (rel_off / (stripe_unit_size * 6078 dp->nfsdi_stripecnt)) * stripe_unit_size + 6079 rel_off % stripe_unit_size; 6080 } else { 6081 /* Sparse layout. */ 6082 if (flp->nfsfl_fhcnt > 1) { 6083 if (stripe_index >= flp->nfsfl_fhcnt) 6084 return (EIO); 6085 fhp = flp->nfsfl_fh[stripe_index]; 6086 } else if (flp->nfsfl_fhcnt == 1) 6087 fhp = flp->nfsfl_fh[0]; 6088 else 6089 fhp = np->n_fhp; 6090 io_off = off; 6091 } 6092 if ((flp->nfsfl_util & NFSFLAYUTIL_COMMIT_THRU_MDS) != 0) { 6093 commit_thru_mds = 1; 6094 if (docommit != 0) 6095 error = EIO; 6096 } else { 6097 commit_thru_mds = 0; 6098 NFSLOCKNODE(np); 6099 np->n_flag |= NDSCOMMIT; 6100 NFSUNLOCKNODE(np); 6101 } 6102 if (docommit != 0) { 6103 if (error == 0) 6104 error = nfsrpc_commitds(vp, io_off, xfer, 6105 *dspp, fhp, NFS_VER4, minorvers, cred, p); 6106 if (error == 0) { 6107 /* 6108 * Set both eof and uio_resid = 0 to end any 6109 * loops. 6110 */ 6111 *eofp = 1; 6112 uiop->uio_resid = 0; 6113 } else { 6114 NFSLOCKNODE(np); 6115 np->n_flag &= ~NDSCOMMIT; 6116 NFSUNLOCKNODE(np); 6117 } 6118 } else if (rwflag == NFSV4OPEN_ACCESSREAD) 6119 error = nfsrpc_readds(vp, uiop, stateidp, eofp, *dspp, 6120 io_off, xfer, fhp, 0, NFS_VER4, minorvers, cred, p); 6121 else { 6122 error = nfsrpc_writeds(vp, uiop, iomode, must_commit, 6123 stateidp, *dspp, io_off, xfer, fhp, commit_thru_mds, 6124 0, NFS_VER4, minorvers, cred, p); 6125 if (error == 0) { 6126 NFSLOCKCLSTATE(); 6127 lyp->nfsly_flags |= NFSLY_WRITTEN; 6128 NFSUNLOCKCLSTATE(); 6129 } 6130 } 6131 if (error == 0) { 6132 transfer = stripe_unit_size; 6133 stripe_pos = (stripe_pos + 1) % dp->nfsdi_stripecnt; 6134 len -= xfer; 6135 off += xfer; 6136 } 6137 } 6138 return (error); 6139 } 6140 6141 /* 6142 * Do I/O using an NFSv4.1 flex file layout. 6143 */ 6144 static int 6145 nfscl_dofflayoutio(vnode_t vp, struct uio *uiop, int *iomode, int *must_commit, 6146 int *eofp, nfsv4stateid_t *stateidp, int rwflag, struct nfscldevinfo *dp, 6147 struct nfscllayout *lyp, struct nfsclflayout *flp, uint64_t off, 6148 uint64_t len, int mirror, int docommit, struct mbuf *mp, 6149 struct nfsclwritedsdorpc *drpc, struct ucred *cred, NFSPROC_T *p) 6150 { 6151 uint64_t transfer, xfer; 6152 int error, rel_off; 6153 struct nfsnode *np; 6154 struct nfsfh *fhp; 6155 struct nfsclds **dspp; 6156 struct ucred *tcred; 6157 struct mbuf *m; 6158 6159 np = VTONFS(vp); 6160 error = 0; 6161 rel_off = 0; 6162 NFSCL_DEBUG(4, "nfscl_dofflayoutio: off=%ju len=%ju\n", (uintmax_t)off, 6163 (uintmax_t)len); 6164 /* Loop around, doing I/O for each stripe unit. */ 6165 while (len > 0 && error == 0) { 6166 dspp = nfsfldi_addr(dp, 0); 6167 fhp = flp->nfsfl_ffm[mirror].fh[dp->nfsdi_versindex]; 6168 stateidp = &flp->nfsfl_ffm[mirror].st; 6169 NFSCL_DEBUG(4, "mirror=%d vind=%d fhlen=%d st.seqid=0x%x\n", 6170 mirror, dp->nfsdi_versindex, fhp->nfh_len, stateidp->seqid); 6171 if ((dp->nfsdi_flags & NFSDI_TIGHTCOUPLED) == 0) { 6172 tcred = NFSNEWCRED(cred); 6173 tcred->cr_uid = flp->nfsfl_ffm[mirror].user; 6174 tcred->cr_groups[0] = flp->nfsfl_ffm[mirror].group; 6175 tcred->cr_ngroups = 1; 6176 } else 6177 tcred = cred; 6178 if (rwflag == NFSV4OPEN_ACCESSREAD) 6179 transfer = dp->nfsdi_rsize; 6180 else 6181 transfer = dp->nfsdi_wsize; 6182 NFSLOCKNODE(np); 6183 np->n_flag |= NDSCOMMIT; 6184 NFSUNLOCKNODE(np); 6185 if (len > transfer && docommit == 0) 6186 xfer = transfer; 6187 else 6188 xfer = len; 6189 if (docommit != 0) { 6190 if (error == 0) { 6191 /* 6192 * Do last mirrored DS commit with this thread. 6193 */ 6194 if (mirror < flp->nfsfl_mirrorcnt - 1) 6195 error = nfsio_commitds(vp, off, xfer, 6196 *dspp, fhp, dp->nfsdi_vers, 6197 dp->nfsdi_minorvers, drpc, tcred, 6198 p); 6199 else 6200 error = nfsrpc_commitds(vp, off, xfer, 6201 *dspp, fhp, dp->nfsdi_vers, 6202 dp->nfsdi_minorvers, tcred, p); 6203 NFSCL_DEBUG(4, "commitds=%d\n", error); 6204 if (error != 0 && error != EACCES && error != 6205 ESTALE) { 6206 NFSCL_DEBUG(4, 6207 "DS layreterr for commit\n"); 6208 nfscl_dserr(NFSV4OP_COMMIT, error, dp, 6209 lyp, *dspp); 6210 } 6211 } 6212 NFSCL_DEBUG(4, "aft nfsio_commitds=%d\n", error); 6213 if (error == 0) { 6214 /* 6215 * Set both eof and uio_resid = 0 to end any 6216 * loops. 6217 */ 6218 *eofp = 1; 6219 uiop->uio_resid = 0; 6220 } else { 6221 NFSLOCKNODE(np); 6222 np->n_flag &= ~NDSCOMMIT; 6223 NFSUNLOCKNODE(np); 6224 } 6225 } else if (rwflag == NFSV4OPEN_ACCESSREAD) { 6226 error = nfsrpc_readds(vp, uiop, stateidp, eofp, *dspp, 6227 off, xfer, fhp, 1, dp->nfsdi_vers, 6228 dp->nfsdi_minorvers, tcred, p); 6229 NFSCL_DEBUG(4, "readds=%d\n", error); 6230 if (error != 0 && error != EACCES && error != ESTALE) { 6231 NFSCL_DEBUG(4, "DS layreterr for read\n"); 6232 nfscl_dserr(NFSV4OP_READ, error, dp, lyp, 6233 *dspp); 6234 } 6235 } else { 6236 if (flp->nfsfl_mirrorcnt == 1) { 6237 error = nfsrpc_writeds(vp, uiop, iomode, 6238 must_commit, stateidp, *dspp, off, xfer, 6239 fhp, 0, 1, dp->nfsdi_vers, 6240 dp->nfsdi_minorvers, tcred, p); 6241 if (error == 0) { 6242 NFSLOCKCLSTATE(); 6243 lyp->nfsly_flags |= NFSLY_WRITTEN; 6244 NFSUNLOCKCLSTATE(); 6245 } 6246 } else { 6247 m = nfsm_copym(mp, rel_off, xfer); 6248 NFSCL_DEBUG(4, "mcopy reloff=%d xfer=%jd\n", 6249 rel_off, (uintmax_t)xfer); 6250 /* 6251 * Do the writes after the first loop iteration 6252 * and the write for the last mirror via this 6253 * thread. 6254 * This loop only iterates for small values 6255 * of nfsdi_wsize, which may never occur in 6256 * practice. However, the drpc is completely 6257 * used by the first iteration and, as such, 6258 * cannot be used after that. 6259 */ 6260 if (mirror < flp->nfsfl_mirrorcnt - 1 && 6261 rel_off == 0) 6262 error = nfsio_writedsmir(vp, iomode, 6263 must_commit, stateidp, *dspp, off, 6264 xfer, fhp, m, dp->nfsdi_vers, 6265 dp->nfsdi_minorvers, drpc, tcred, 6266 p); 6267 else 6268 error = nfsrpc_writedsmir(vp, iomode, 6269 must_commit, stateidp, *dspp, off, 6270 xfer, fhp, m, dp->nfsdi_vers, 6271 dp->nfsdi_minorvers, tcred, p); 6272 NFSCL_DEBUG(4, "nfsio_writedsmir=%d\n", error); 6273 if (error != 0 && error != EACCES && error != 6274 ESTALE) { 6275 NFSCL_DEBUG(4, 6276 "DS layreterr for write\n"); 6277 nfscl_dserr(NFSV4OP_WRITE, error, dp, 6278 lyp, *dspp); 6279 } 6280 } 6281 } 6282 NFSCL_DEBUG(4, "aft read/writeds=%d\n", error); 6283 if (error == 0) { 6284 len -= xfer; 6285 off += xfer; 6286 rel_off += xfer; 6287 } 6288 if ((dp->nfsdi_flags & NFSDI_TIGHTCOUPLED) == 0) 6289 NFSFREECRED(tcred); 6290 } 6291 NFSCL_DEBUG(4, "eo nfscl_dofflayoutio=%d\n", error); 6292 return (error); 6293 } 6294 6295 /* 6296 * The actual read RPC done to a DS. 6297 */ 6298 static int 6299 nfsrpc_readds(vnode_t vp, struct uio *uiop, nfsv4stateid_t *stateidp, int *eofp, 6300 struct nfsclds *dsp, uint64_t io_off, int len, struct nfsfh *fhp, int flex, 6301 int vers, int minorvers, struct ucred *cred, NFSPROC_T *p) 6302 { 6303 uint32_t *tl; 6304 int attrflag, error, retlen; 6305 struct nfsrv_descript nfsd; 6306 struct nfsmount *nmp = VFSTONFS(vp->v_mount); 6307 struct nfsrv_descript *nd = &nfsd; 6308 struct nfssockreq *nrp; 6309 struct nfsvattr na; 6310 6311 nd->nd_mrep = NULL; 6312 if (vers == 0 || vers == NFS_VER4) { 6313 nfscl_reqstart(nd, NFSPROC_READDS, nmp, fhp->nfh_fh, 6314 fhp->nfh_len, NULL, &dsp->nfsclds_sess, vers, minorvers, 6315 false); 6316 vers = NFS_VER4; 6317 NFSCL_DEBUG(4, "nfsrpc_readds: vers4 minvers=%d\n", minorvers); 6318 if (flex != 0) 6319 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID); 6320 else 6321 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSEQIDZERO); 6322 } else { 6323 nfscl_reqstart(nd, NFSPROC_READ, nmp, fhp->nfh_fh, 6324 fhp->nfh_len, NULL, &dsp->nfsclds_sess, vers, minorvers, 6325 false); 6326 NFSCL_DEBUG(4, "nfsrpc_readds: vers3\n"); 6327 } 6328 NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED * 3); 6329 txdr_hyper(io_off, tl); 6330 *(tl + 2) = txdr_unsigned(len); 6331 nrp = dsp->nfsclds_sockp; 6332 NFSCL_DEBUG(4, "nfsrpc_readds: nrp=%p\n", nrp); 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_readds: stat=%d err=%d\n", nd->nd_repstat, 6339 error); 6340 if (error != 0) 6341 return (error); 6342 if (vers == NFS_VER3) { 6343 error = nfscl_postop_attr(nd, &na, &attrflag, NULL); 6344 NFSCL_DEBUG(4, "nfsrpc_readds: postop=%d\n", error); 6345 if (error != 0) 6346 goto nfsmout; 6347 } 6348 if (nd->nd_repstat != 0) { 6349 error = nd->nd_repstat; 6350 goto nfsmout; 6351 } 6352 if (vers == NFS_VER3) { 6353 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED); 6354 *eofp = fxdr_unsigned(int, *(tl + 1)); 6355 } else { 6356 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 6357 *eofp = fxdr_unsigned(int, *tl); 6358 } 6359 NFSM_STRSIZ(retlen, len); 6360 NFSCL_DEBUG(4, "nfsrpc_readds: retlen=%d eof=%d\n", retlen, *eofp); 6361 error = nfsm_mbufuio(nd, uiop, retlen); 6362 nfsmout: 6363 if (nd->nd_mrep != NULL) 6364 m_freem(nd->nd_mrep); 6365 return (error); 6366 } 6367 6368 /* 6369 * The actual write RPC done to a DS. 6370 */ 6371 static int 6372 nfsrpc_writeds(vnode_t vp, struct uio *uiop, int *iomode, int *must_commit, 6373 nfsv4stateid_t *stateidp, struct nfsclds *dsp, uint64_t io_off, int len, 6374 struct nfsfh *fhp, int commit_thru_mds, int flex, int vers, int minorvers, 6375 struct ucred *cred, NFSPROC_T *p) 6376 { 6377 uint32_t *tl; 6378 struct nfsmount *nmp = VFSTONFS(vp->v_mount); 6379 int attrflag, error, rlen, commit, committed = NFSWRITE_FILESYNC; 6380 int32_t backup; 6381 struct nfsrv_descript nfsd; 6382 struct nfsrv_descript *nd = &nfsd; 6383 struct nfssockreq *nrp; 6384 struct nfsvattr na; 6385 6386 KASSERT(uiop->uio_iovcnt == 1, ("nfs: writerpc iovcnt > 1")); 6387 nd->nd_mrep = NULL; 6388 if (vers == 0 || vers == NFS_VER4) { 6389 nfscl_reqstart(nd, NFSPROC_WRITEDS, nmp, fhp->nfh_fh, 6390 fhp->nfh_len, NULL, &dsp->nfsclds_sess, vers, minorvers, 6391 false); 6392 NFSCL_DEBUG(4, "nfsrpc_writeds: vers4 minvers=%d\n", minorvers); 6393 vers = NFS_VER4; 6394 if (flex != 0) 6395 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID); 6396 else 6397 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSEQIDZERO); 6398 NFSM_BUILD(tl, uint32_t *, NFSX_HYPER + 2 * NFSX_UNSIGNED); 6399 } else { 6400 nfscl_reqstart(nd, NFSPROC_WRITE, nmp, fhp->nfh_fh, 6401 fhp->nfh_len, NULL, &dsp->nfsclds_sess, vers, minorvers, 6402 false); 6403 NFSCL_DEBUG(4, "nfsrpc_writeds: vers3\n"); 6404 NFSM_BUILD(tl, uint32_t *, NFSX_HYPER + 3 * NFSX_UNSIGNED); 6405 } 6406 txdr_hyper(io_off, tl); 6407 tl += 2; 6408 if (vers == NFS_VER3) 6409 *tl++ = txdr_unsigned(len); 6410 *tl++ = txdr_unsigned(*iomode); 6411 *tl = txdr_unsigned(len); 6412 nfsm_uiombuf(nd, uiop, len); 6413 nrp = dsp->nfsclds_sockp; 6414 if (nrp == NULL) 6415 /* If NULL, use the MDS socket. */ 6416 nrp = &nmp->nm_sockreq; 6417 error = newnfs_request(nd, nmp, NULL, nrp, vp, p, cred, 6418 NFS_PROG, vers, NULL, 1, NULL, &dsp->nfsclds_sess); 6419 NFSCL_DEBUG(4, "nfsrpc_writeds: err=%d stat=%d\n", error, 6420 nd->nd_repstat); 6421 if (error != 0) 6422 return (error); 6423 if (nd->nd_repstat != 0) { 6424 /* 6425 * In case the rpc gets retried, roll 6426 * the uio fileds changed by nfsm_uiombuf() 6427 * back. 6428 */ 6429 uiop->uio_offset -= len; 6430 uiop->uio_resid += len; 6431 uiop->uio_iov->iov_base = (char *)uiop->uio_iov->iov_base - len; 6432 uiop->uio_iov->iov_len += len; 6433 error = nd->nd_repstat; 6434 } else { 6435 if (vers == NFS_VER3) { 6436 error = nfscl_wcc_data(nd, vp, &na, &attrflag, NULL, 6437 NULL); 6438 NFSCL_DEBUG(4, "nfsrpc_writeds: wcc_data=%d\n", error); 6439 if (error != 0) 6440 goto nfsmout; 6441 } 6442 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED + NFSX_VERF); 6443 rlen = fxdr_unsigned(int, *tl++); 6444 NFSCL_DEBUG(4, "nfsrpc_writeds: len=%d rlen=%d\n", len, rlen); 6445 if (rlen == 0) { 6446 error = NFSERR_IO; 6447 goto nfsmout; 6448 } else if (rlen < len) { 6449 backup = len - rlen; 6450 uiop->uio_iov->iov_base = 6451 (char *)uiop->uio_iov->iov_base - backup; 6452 uiop->uio_iov->iov_len += backup; 6453 uiop->uio_offset -= backup; 6454 uiop->uio_resid += backup; 6455 len = rlen; 6456 } 6457 commit = fxdr_unsigned(int, *tl++); 6458 6459 /* 6460 * Return the lowest commitment level 6461 * obtained by any of the RPCs. 6462 */ 6463 if (committed == NFSWRITE_FILESYNC) 6464 committed = commit; 6465 else if (committed == NFSWRITE_DATASYNC && 6466 commit == NFSWRITE_UNSTABLE) 6467 committed = commit; 6468 if (commit_thru_mds != 0) { 6469 NFSLOCKMNT(nmp); 6470 if (!NFSHASWRITEVERF(nmp)) { 6471 NFSBCOPY(tl, nmp->nm_verf, NFSX_VERF); 6472 NFSSETWRITEVERF(nmp); 6473 } else if (NFSBCMP(tl, nmp->nm_verf, NFSX_VERF)) { 6474 *must_commit = 1; 6475 NFSBCOPY(tl, nmp->nm_verf, NFSX_VERF); 6476 } 6477 NFSUNLOCKMNT(nmp); 6478 } else { 6479 NFSLOCKDS(dsp); 6480 if ((dsp->nfsclds_flags & NFSCLDS_HASWRITEVERF) == 0) { 6481 NFSBCOPY(tl, dsp->nfsclds_verf, NFSX_VERF); 6482 dsp->nfsclds_flags |= NFSCLDS_HASWRITEVERF; 6483 } else if (NFSBCMP(tl, dsp->nfsclds_verf, NFSX_VERF)) { 6484 *must_commit = 1; 6485 NFSBCOPY(tl, dsp->nfsclds_verf, NFSX_VERF); 6486 } 6487 NFSUNLOCKDS(dsp); 6488 } 6489 } 6490 nfsmout: 6491 if (nd->nd_mrep != NULL) 6492 m_freem(nd->nd_mrep); 6493 *iomode = committed; 6494 if (nd->nd_repstat != 0 && error == 0) 6495 error = nd->nd_repstat; 6496 return (error); 6497 } 6498 6499 /* 6500 * The actual write RPC done to a DS. 6501 * This variant is called from a separate kernel process for mirrors. 6502 * Any short write is considered an IO error. 6503 */ 6504 static int 6505 nfsrpc_writedsmir(vnode_t vp, int *iomode, int *must_commit, 6506 nfsv4stateid_t *stateidp, struct nfsclds *dsp, uint64_t io_off, int len, 6507 struct nfsfh *fhp, struct mbuf *m, int vers, int minorvers, 6508 struct ucred *cred, NFSPROC_T *p) 6509 { 6510 uint32_t *tl; 6511 struct nfsmount *nmp = VFSTONFS(vp->v_mount); 6512 int attrflag, error, commit, committed = NFSWRITE_FILESYNC, rlen; 6513 struct nfsrv_descript nfsd; 6514 struct nfsrv_descript *nd = &nfsd; 6515 struct nfssockreq *nrp; 6516 struct nfsvattr na; 6517 6518 nd->nd_mrep = NULL; 6519 if (vers == 0 || vers == NFS_VER4) { 6520 nfscl_reqstart(nd, NFSPROC_WRITEDS, nmp, fhp->nfh_fh, 6521 fhp->nfh_len, NULL, &dsp->nfsclds_sess, vers, minorvers, 6522 false); 6523 vers = NFS_VER4; 6524 NFSCL_DEBUG(4, "nfsrpc_writedsmir: vers4 minvers=%d\n", 6525 minorvers); 6526 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID); 6527 NFSM_BUILD(tl, uint32_t *, NFSX_HYPER + 2 * NFSX_UNSIGNED); 6528 } else { 6529 nfscl_reqstart(nd, NFSPROC_WRITE, nmp, fhp->nfh_fh, 6530 fhp->nfh_len, NULL, &dsp->nfsclds_sess, vers, minorvers, 6531 false); 6532 NFSCL_DEBUG(4, "nfsrpc_writedsmir: vers3\n"); 6533 NFSM_BUILD(tl, uint32_t *, NFSX_HYPER + 3 * NFSX_UNSIGNED); 6534 } 6535 txdr_hyper(io_off, tl); 6536 tl += 2; 6537 if (vers == NFS_VER3) 6538 *tl++ = txdr_unsigned(len); 6539 *tl++ = txdr_unsigned(*iomode); 6540 *tl = txdr_unsigned(len); 6541 if (len > 0) { 6542 /* Put data in mbuf chain. */ 6543 nd->nd_mb->m_next = m; 6544 /* Set nd_mb and nd_bpos to end of data. */ 6545 while (m->m_next != NULL) 6546 m = m->m_next; 6547 nd->nd_mb = m; 6548 nd->nd_bpos = mtod(m, char *) + m->m_len; 6549 NFSCL_DEBUG(4, "nfsrpc_writedsmir: lastmb len=%d\n", m->m_len); 6550 } 6551 nrp = dsp->nfsclds_sockp; 6552 if (nrp == NULL) 6553 /* If NULL, use the MDS socket. */ 6554 nrp = &nmp->nm_sockreq; 6555 error = newnfs_request(nd, nmp, NULL, nrp, vp, p, cred, 6556 NFS_PROG, vers, NULL, 1, NULL, &dsp->nfsclds_sess); 6557 NFSCL_DEBUG(4, "nfsrpc_writedsmir: err=%d stat=%d\n", error, 6558 nd->nd_repstat); 6559 if (error != 0) 6560 return (error); 6561 if (nd->nd_repstat != 0) 6562 error = nd->nd_repstat; 6563 else { 6564 if (vers == NFS_VER3) { 6565 error = nfscl_wcc_data(nd, vp, &na, &attrflag, NULL, 6566 NULL); 6567 NFSCL_DEBUG(4, "nfsrpc_writedsmir: wcc_data=%d\n", 6568 error); 6569 if (error != 0) 6570 goto nfsmout; 6571 } 6572 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED + NFSX_VERF); 6573 rlen = fxdr_unsigned(int, *tl++); 6574 NFSCL_DEBUG(4, "nfsrpc_writedsmir: len=%d rlen=%d\n", len, 6575 rlen); 6576 if (rlen != len) { 6577 error = NFSERR_IO; 6578 NFSCL_DEBUG(4, "nfsrpc_writedsmir: len=%d rlen=%d\n", 6579 len, rlen); 6580 goto nfsmout; 6581 } 6582 commit = fxdr_unsigned(int, *tl++); 6583 6584 /* 6585 * Return the lowest commitment level 6586 * obtained by any of the RPCs. 6587 */ 6588 if (committed == NFSWRITE_FILESYNC) 6589 committed = commit; 6590 else if (committed == NFSWRITE_DATASYNC && 6591 commit == NFSWRITE_UNSTABLE) 6592 committed = commit; 6593 NFSLOCKDS(dsp); 6594 if ((dsp->nfsclds_flags & NFSCLDS_HASWRITEVERF) == 0) { 6595 NFSBCOPY(tl, dsp->nfsclds_verf, NFSX_VERF); 6596 dsp->nfsclds_flags |= NFSCLDS_HASWRITEVERF; 6597 } else if (NFSBCMP(tl, dsp->nfsclds_verf, NFSX_VERF)) { 6598 *must_commit = 1; 6599 NFSBCOPY(tl, dsp->nfsclds_verf, NFSX_VERF); 6600 } 6601 NFSUNLOCKDS(dsp); 6602 } 6603 nfsmout: 6604 if (nd->nd_mrep != NULL) 6605 m_freem(nd->nd_mrep); 6606 *iomode = committed; 6607 if (nd->nd_repstat != 0 && error == 0) 6608 error = nd->nd_repstat; 6609 return (error); 6610 } 6611 6612 /* 6613 * Start up the thread that will execute nfsrpc_writedsmir(). 6614 */ 6615 static void 6616 start_writedsmir(void *arg, int pending) 6617 { 6618 struct nfsclwritedsdorpc *drpc; 6619 6620 drpc = (struct nfsclwritedsdorpc *)arg; 6621 drpc->err = nfsrpc_writedsmir(drpc->vp, &drpc->iomode, 6622 &drpc->must_commit, drpc->stateidp, drpc->dsp, drpc->off, drpc->len, 6623 drpc->fhp, drpc->m, drpc->vers, drpc->minorvers, drpc->cred, 6624 drpc->p); 6625 drpc->done = 1; 6626 NFSCL_DEBUG(4, "start_writedsmir: err=%d\n", drpc->err); 6627 } 6628 6629 /* 6630 * Set up the write DS mirror call for the pNFS I/O thread. 6631 */ 6632 static int 6633 nfsio_writedsmir(vnode_t vp, int *iomode, int *must_commit, 6634 nfsv4stateid_t *stateidp, struct nfsclds *dsp, uint64_t off, int len, 6635 struct nfsfh *fhp, struct mbuf *m, int vers, int minorvers, 6636 struct nfsclwritedsdorpc *drpc, struct ucred *cred, NFSPROC_T *p) 6637 { 6638 int error, ret; 6639 6640 error = 0; 6641 drpc->done = 0; 6642 drpc->vp = vp; 6643 drpc->iomode = *iomode; 6644 drpc->must_commit = *must_commit; 6645 drpc->stateidp = stateidp; 6646 drpc->dsp = dsp; 6647 drpc->off = off; 6648 drpc->len = len; 6649 drpc->fhp = fhp; 6650 drpc->m = m; 6651 drpc->vers = vers; 6652 drpc->minorvers = minorvers; 6653 drpc->cred = cred; 6654 drpc->p = p; 6655 drpc->inprog = 0; 6656 ret = EIO; 6657 if (nfs_pnfsiothreads != 0) { 6658 ret = nfs_pnfsio(start_writedsmir, drpc); 6659 NFSCL_DEBUG(4, "nfsio_writedsmir: nfs_pnfsio=%d\n", ret); 6660 } 6661 if (ret != 0) 6662 error = nfsrpc_writedsmir(vp, iomode, must_commit, stateidp, 6663 dsp, off, len, fhp, m, vers, minorvers, cred, p); 6664 NFSCL_DEBUG(4, "nfsio_writedsmir: error=%d\n", error); 6665 return (error); 6666 } 6667 6668 /* 6669 * Free up the nfsclds structure. 6670 */ 6671 void 6672 nfscl_freenfsclds(struct nfsclds *dsp) 6673 { 6674 int i; 6675 6676 if (dsp == NULL) 6677 return; 6678 if (dsp->nfsclds_sockp != NULL) { 6679 NFSFREECRED(dsp->nfsclds_sockp->nr_cred); 6680 NFSFREEMUTEX(&dsp->nfsclds_sockp->nr_mtx); 6681 free(dsp->nfsclds_sockp->nr_nam, M_SONAME); 6682 free(dsp->nfsclds_sockp, M_NFSSOCKREQ); 6683 } 6684 NFSFREEMUTEX(&dsp->nfsclds_mtx); 6685 NFSFREEMUTEX(&dsp->nfsclds_sess.nfsess_mtx); 6686 for (i = 0; i < NFSV4_CBSLOTS; i++) { 6687 if (dsp->nfsclds_sess.nfsess_cbslots[i].nfssl_reply != NULL) 6688 m_freem( 6689 dsp->nfsclds_sess.nfsess_cbslots[i].nfssl_reply); 6690 } 6691 free(dsp, M_NFSCLDS); 6692 } 6693 6694 static enum nfsclds_state 6695 nfscl_getsameserver(struct nfsmount *nmp, struct nfsclds *newdsp, 6696 struct nfsclds **retdspp, uint32_t *sequencep) 6697 { 6698 struct nfsclds *dsp; 6699 int fndseq; 6700 6701 /* 6702 * Search the list of nfsclds structures for one with the same 6703 * server. 6704 */ 6705 fndseq = 0; 6706 TAILQ_FOREACH(dsp, &nmp->nm_sess, nfsclds_list) { 6707 if (dsp->nfsclds_servownlen == newdsp->nfsclds_servownlen && 6708 dsp->nfsclds_servownlen != 0 && 6709 !NFSBCMP(dsp->nfsclds_serverown, newdsp->nfsclds_serverown, 6710 dsp->nfsclds_servownlen) && 6711 dsp->nfsclds_sess.nfsess_defunct == 0) { 6712 NFSCL_DEBUG(4, "fnd same fdsp=%p dsp=%p flg=0x%x\n", 6713 TAILQ_FIRST(&nmp->nm_sess), dsp, 6714 dsp->nfsclds_flags); 6715 if (fndseq == 0) { 6716 /* Get sequenceid# from first entry. */ 6717 *sequencep = 6718 dsp->nfsclds_sess.nfsess_sequenceid; 6719 fndseq = 1; 6720 } 6721 /* Server major id matches. */ 6722 if ((dsp->nfsclds_flags & NFSCLDS_DS) != 0) { 6723 *retdspp = dsp; 6724 return (NFSDSP_USETHISSESSION); 6725 } 6726 6727 } 6728 } 6729 if (fndseq != 0) 6730 return (NFSDSP_SEQTHISSESSION); 6731 return (NFSDSP_NOTFOUND); 6732 } 6733 6734 /* 6735 * NFS commit rpc to a NFSv4.1 DS. 6736 */ 6737 static int 6738 nfsrpc_commitds(vnode_t vp, uint64_t offset, int cnt, struct nfsclds *dsp, 6739 struct nfsfh *fhp, int vers, int minorvers, struct ucred *cred, 6740 NFSPROC_T *p) 6741 { 6742 uint32_t *tl; 6743 struct nfsrv_descript nfsd, *nd = &nfsd; 6744 struct nfsmount *nmp = VFSTONFS(vp->v_mount); 6745 struct nfssockreq *nrp; 6746 struct nfsvattr na; 6747 int attrflag, error; 6748 6749 nd->nd_mrep = NULL; 6750 if (vers == 0 || vers == NFS_VER4) { 6751 nfscl_reqstart(nd, NFSPROC_COMMITDS, nmp, fhp->nfh_fh, 6752 fhp->nfh_len, NULL, &dsp->nfsclds_sess, vers, minorvers, 6753 false); 6754 vers = NFS_VER4; 6755 } else 6756 nfscl_reqstart(nd, NFSPROC_COMMIT, nmp, fhp->nfh_fh, 6757 fhp->nfh_len, NULL, &dsp->nfsclds_sess, vers, minorvers, 6758 false); 6759 NFSCL_DEBUG(4, "nfsrpc_commitds: vers=%d minvers=%d\n", vers, 6760 minorvers); 6761 NFSM_BUILD(tl, uint32_t *, NFSX_HYPER + NFSX_UNSIGNED); 6762 txdr_hyper(offset, tl); 6763 tl += 2; 6764 *tl = txdr_unsigned(cnt); 6765 nrp = dsp->nfsclds_sockp; 6766 if (nrp == NULL) 6767 /* If NULL, use the MDS socket. */ 6768 nrp = &nmp->nm_sockreq; 6769 error = newnfs_request(nd, nmp, NULL, nrp, vp, p, cred, 6770 NFS_PROG, vers, NULL, 1, NULL, &dsp->nfsclds_sess); 6771 NFSCL_DEBUG(4, "nfsrpc_commitds: err=%d stat=%d\n", error, 6772 nd->nd_repstat); 6773 if (error != 0) 6774 return (error); 6775 if (nd->nd_repstat == 0) { 6776 if (vers == NFS_VER3) { 6777 error = nfscl_wcc_data(nd, vp, &na, &attrflag, NULL, 6778 NULL); 6779 NFSCL_DEBUG(4, "nfsrpc_commitds: wccdata=%d\n", error); 6780 if (error != 0) 6781 goto nfsmout; 6782 } 6783 NFSM_DISSECT(tl, u_int32_t *, NFSX_VERF); 6784 NFSLOCKDS(dsp); 6785 if (NFSBCMP(tl, dsp->nfsclds_verf, NFSX_VERF)) { 6786 NFSBCOPY(tl, dsp->nfsclds_verf, NFSX_VERF); 6787 error = NFSERR_STALEWRITEVERF; 6788 } 6789 NFSUNLOCKDS(dsp); 6790 } 6791 nfsmout: 6792 if (error == 0 && nd->nd_repstat != 0) 6793 error = nd->nd_repstat; 6794 m_freem(nd->nd_mrep); 6795 return (error); 6796 } 6797 6798 /* 6799 * Start up the thread that will execute nfsrpc_commitds(). 6800 */ 6801 static void 6802 start_commitds(void *arg, int pending) 6803 { 6804 struct nfsclwritedsdorpc *drpc; 6805 6806 drpc = (struct nfsclwritedsdorpc *)arg; 6807 drpc->err = nfsrpc_commitds(drpc->vp, drpc->off, drpc->len, 6808 drpc->dsp, drpc->fhp, drpc->vers, drpc->minorvers, drpc->cred, 6809 drpc->p); 6810 drpc->done = 1; 6811 NFSCL_DEBUG(4, "start_commitds: err=%d\n", drpc->err); 6812 } 6813 6814 /* 6815 * Set up the commit DS mirror call for the pNFS I/O thread. 6816 */ 6817 static int 6818 nfsio_commitds(vnode_t vp, uint64_t offset, int cnt, struct nfsclds *dsp, 6819 struct nfsfh *fhp, int vers, int minorvers, 6820 struct nfsclwritedsdorpc *drpc, struct ucred *cred, NFSPROC_T *p) 6821 { 6822 int error, ret; 6823 6824 error = 0; 6825 drpc->done = 0; 6826 drpc->vp = vp; 6827 drpc->off = offset; 6828 drpc->len = cnt; 6829 drpc->dsp = dsp; 6830 drpc->fhp = fhp; 6831 drpc->vers = vers; 6832 drpc->minorvers = minorvers; 6833 drpc->cred = cred; 6834 drpc->p = p; 6835 drpc->inprog = 0; 6836 ret = EIO; 6837 if (nfs_pnfsiothreads != 0) { 6838 ret = nfs_pnfsio(start_commitds, drpc); 6839 NFSCL_DEBUG(4, "nfsio_commitds: nfs_pnfsio=%d\n", ret); 6840 } 6841 if (ret != 0) 6842 error = nfsrpc_commitds(vp, offset, cnt, dsp, fhp, vers, 6843 minorvers, cred, p); 6844 NFSCL_DEBUG(4, "nfsio_commitds: error=%d\n", error); 6845 return (error); 6846 } 6847 6848 /* 6849 * NFS Advise rpc 6850 */ 6851 int 6852 nfsrpc_advise(vnode_t vp, off_t offset, uint64_t cnt, int advise, 6853 struct ucred *cred, NFSPROC_T *p) 6854 { 6855 u_int32_t *tl; 6856 struct nfsrv_descript nfsd, *nd = &nfsd; 6857 nfsattrbit_t hints; 6858 int error; 6859 6860 NFSZERO_ATTRBIT(&hints); 6861 if (advise == POSIX_FADV_WILLNEED) 6862 NFSSETBIT_ATTRBIT(&hints, NFSV4IOHINT_WILLNEED); 6863 else if (advise == POSIX_FADV_DONTNEED) 6864 NFSSETBIT_ATTRBIT(&hints, NFSV4IOHINT_DONTNEED); 6865 else 6866 return (0); 6867 NFSCL_REQSTART(nd, NFSPROC_IOADVISE, vp); 6868 nfsm_stateidtom(nd, NULL, NFSSTATEID_PUTALLZERO); 6869 NFSM_BUILD(tl, uint32_t *, 2 * NFSX_HYPER); 6870 txdr_hyper(offset, tl); 6871 tl += 2; 6872 txdr_hyper(cnt, tl); 6873 nfsrv_putattrbit(nd, &hints); 6874 error = nfscl_request(nd, vp, p, cred, NULL); 6875 if (error != 0) 6876 return (error); 6877 if (nd->nd_repstat != 0) 6878 error = nd->nd_repstat; 6879 m_freem(nd->nd_mrep); 6880 return (error); 6881 } 6882 6883 #ifdef notyet 6884 /* 6885 * NFS advise rpc to a NFSv4.2 DS. 6886 */ 6887 static int 6888 nfsrpc_adviseds(vnode_t vp, uint64_t offset, int cnt, int advise, 6889 struct nfsclds *dsp, struct nfsfh *fhp, int vers, int minorvers, 6890 struct ucred *cred, NFSPROC_T *p) 6891 { 6892 uint32_t *tl; 6893 struct nfsrv_descript nfsd, *nd = &nfsd; 6894 struct nfsmount *nmp = VFSTONFS(vp->v_mount); 6895 struct nfssockreq *nrp; 6896 nfsattrbit_t hints; 6897 int error; 6898 6899 /* For NFS DSs prior to NFSv4.2, just return OK. */ 6900 if (vers == NFS_VER3 || minorversion < NFSV42_MINORVERSION) 6901 return (0); 6902 NFSZERO_ATTRBIT(&hints); 6903 if (advise == POSIX_FADV_WILLNEED) 6904 NFSSETBIT_ATTRBIT(&hints, NFSV4IOHINT_WILLNEED); 6905 else if (advise == POSIX_FADV_DONTNEED) 6906 NFSSETBIT_ATTRBIT(&hints, NFSV4IOHINT_DONTNEED); 6907 else 6908 return (0); 6909 nd->nd_mrep = NULL; 6910 nfscl_reqstart(nd, NFSPROC_IOADVISEDS, nmp, fhp->nfh_fh, 6911 fhp->nfh_len, NULL, &dsp->nfsclds_sess, vers, minorvers, false); 6912 vers = NFS_VER4; 6913 NFSCL_DEBUG(4, "nfsrpc_adviseds: vers=%d minvers=%d\n", vers, 6914 minorvers); 6915 nfsm_stateidtom(nd, NULL, NFSSTATEID_PUTALLZERO); 6916 NFSM_BUILD(tl, uint32_t *, NFSX_HYPER + NFSX_UNSIGNED); 6917 txdr_hyper(offset, tl); 6918 tl += 2; 6919 *tl = txdr_unsigned(cnt); 6920 nfsrv_putattrbit(nd, &hints); 6921 nrp = dsp->nfsclds_sockp; 6922 if (nrp == NULL) 6923 /* If NULL, use the MDS socket. */ 6924 nrp = &nmp->nm_sockreq; 6925 error = newnfs_request(nd, nmp, NULL, nrp, vp, p, cred, 6926 NFS_PROG, vers, NULL, 1, NULL, &dsp->nfsclds_sess); 6927 NFSCL_DEBUG(4, "nfsrpc_adviseds: err=%d stat=%d\n", error, 6928 nd->nd_repstat); 6929 if (error != 0) 6930 return (error); 6931 if (nd->nd_repstat != 0) 6932 error = nd->nd_repstat; 6933 m_freem(nd->nd_mrep); 6934 return (error); 6935 } 6936 6937 /* 6938 * Start up the thread that will execute nfsrpc_commitds(). 6939 */ 6940 static void 6941 start_adviseds(void *arg, int pending) 6942 { 6943 struct nfsclwritedsdorpc *drpc; 6944 6945 drpc = (struct nfsclwritedsdorpc *)arg; 6946 drpc->err = nfsrpc_adviseds(drpc->vp, drpc->off, drpc->len, 6947 drpc->advise, drpc->dsp, drpc->fhp, drpc->vers, drpc->minorvers, 6948 drpc->cred, drpc->p); 6949 drpc->done = 1; 6950 NFSCL_DEBUG(4, "start_adviseds: err=%d\n", drpc->err); 6951 } 6952 6953 /* 6954 * Set up the commit DS mirror call for the pNFS I/O thread. 6955 */ 6956 static int 6957 nfsio_adviseds(vnode_t vp, uint64_t offset, int cnt, int advise, 6958 struct nfsclds *dsp, struct nfsfh *fhp, int vers, int minorvers, 6959 struct nfsclwritedsdorpc *drpc, struct ucred *cred, NFSPROC_T *p) 6960 { 6961 int error, ret; 6962 6963 error = 0; 6964 drpc->done = 0; 6965 drpc->vp = vp; 6966 drpc->off = offset; 6967 drpc->len = cnt; 6968 drpc->advise = advise; 6969 drpc->dsp = dsp; 6970 drpc->fhp = fhp; 6971 drpc->vers = vers; 6972 drpc->minorvers = minorvers; 6973 drpc->cred = cred; 6974 drpc->p = p; 6975 drpc->inprog = 0; 6976 ret = EIO; 6977 if (nfs_pnfsiothreads != 0) { 6978 ret = nfs_pnfsio(start_adviseds, drpc); 6979 NFSCL_DEBUG(4, "nfsio_adviseds: nfs_pnfsio=%d\n", ret); 6980 } 6981 if (ret != 0) 6982 error = nfsrpc_adviseds(vp, offset, cnt, advise, dsp, fhp, vers, 6983 minorvers, cred, p); 6984 NFSCL_DEBUG(4, "nfsio_adviseds: error=%d\n", error); 6985 return (error); 6986 } 6987 #endif /* notyet */ 6988 6989 /* 6990 * Do the Allocate operation, retrying for recovery. 6991 */ 6992 int 6993 nfsrpc_allocate(vnode_t vp, off_t off, off_t len, struct nfsvattr *nap, 6994 int *attrflagp, struct ucred *cred, NFSPROC_T *p, void *stuff) 6995 { 6996 int error, expireret = 0, retrycnt, nostateid; 6997 uint32_t clidrev = 0; 6998 struct nfsmount *nmp = VFSTONFS(vp->v_mount); 6999 struct nfsfh *nfhp = NULL; 7000 nfsv4stateid_t stateid; 7001 off_t tmp_off; 7002 void *lckp; 7003 7004 if (len < 0) 7005 return (EINVAL); 7006 if (len == 0) 7007 return (0); 7008 tmp_off = off + len; 7009 NFSLOCKMNT(nmp); 7010 if (tmp_off > nmp->nm_maxfilesize || tmp_off < off) { 7011 NFSUNLOCKMNT(nmp); 7012 return (EFBIG); 7013 } 7014 if (nmp->nm_clp != NULL) 7015 clidrev = nmp->nm_clp->nfsc_clientidrev; 7016 NFSUNLOCKMNT(nmp); 7017 nfhp = VTONFS(vp)->n_fhp; 7018 retrycnt = 0; 7019 do { 7020 lckp = NULL; 7021 nostateid = 0; 7022 nfscl_getstateid(vp, nfhp->nfh_fh, nfhp->nfh_len, 7023 NFSV4OPEN_ACCESSWRITE, 0, cred, p, &stateid, &lckp); 7024 if (stateid.other[0] == 0 && stateid.other[1] == 0 && 7025 stateid.other[2] == 0) { 7026 nostateid = 1; 7027 NFSCL_DEBUG(1, "stateid0 in allocate\n"); 7028 } 7029 7030 /* 7031 * Not finding a stateid should probably never happen, 7032 * but just return an error for this case. 7033 */ 7034 if (nostateid != 0) 7035 error = EIO; 7036 else 7037 error = nfsrpc_allocaterpc(vp, off, len, &stateid, 7038 nap, attrflagp, cred, p, stuff); 7039 if (error == NFSERR_STALESTATEID) 7040 nfscl_initiate_recovery(nmp->nm_clp); 7041 if (lckp != NULL) 7042 nfscl_lockderef(lckp); 7043 if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 7044 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 7045 error == NFSERR_OLDSTATEID || error == NFSERR_BADSESSION) { 7046 (void) nfs_catnap(PZERO, error, "nfs_allocate"); 7047 } else if ((error == NFSERR_EXPIRED || 7048 error == NFSERR_BADSTATEID) && clidrev != 0) { 7049 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p); 7050 } 7051 retrycnt++; 7052 } while (error == NFSERR_GRACE || error == NFSERR_DELAY || 7053 error == NFSERR_STALESTATEID || error == NFSERR_BADSESSION || 7054 error == NFSERR_STALEDONTRECOVER || 7055 (error == NFSERR_OLDSTATEID && retrycnt < 20) || 7056 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) && 7057 expireret == 0 && clidrev != 0 && retrycnt < 4)); 7058 if (error != 0 && retrycnt >= 4) 7059 error = EIO; 7060 return (error); 7061 } 7062 7063 /* 7064 * The allocate RPC. 7065 */ 7066 static int 7067 nfsrpc_allocaterpc(vnode_t vp, off_t off, off_t len, nfsv4stateid_t *stateidp, 7068 struct nfsvattr *nap, int *attrflagp, struct ucred *cred, NFSPROC_T *p, 7069 void *stuff) 7070 { 7071 uint32_t *tl; 7072 int error; 7073 struct nfsrv_descript nfsd; 7074 struct nfsrv_descript *nd = &nfsd; 7075 nfsattrbit_t attrbits; 7076 7077 *attrflagp = 0; 7078 NFSCL_REQSTART(nd, NFSPROC_ALLOCATE, vp); 7079 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID); 7080 NFSM_BUILD(tl, uint32_t *, 2 * NFSX_HYPER + NFSX_UNSIGNED); 7081 txdr_hyper(off, tl); tl += 2; 7082 txdr_hyper(len, tl); tl += 2; 7083 *tl = txdr_unsigned(NFSV4OP_GETATTR); 7084 NFSGETATTR_ATTRBIT(&attrbits); 7085 nfsrv_putattrbit(nd, &attrbits); 7086 error = nfscl_request(nd, vp, p, cred, stuff); 7087 if (error != 0) 7088 return (error); 7089 if (nd->nd_repstat == 0) { 7090 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 7091 error = nfsm_loadattr(nd, nap); 7092 if (error == 0) 7093 *attrflagp = NFS_LATTR_NOSHRINK; 7094 } else 7095 error = nd->nd_repstat; 7096 nfsmout: 7097 m_freem(nd->nd_mrep); 7098 return (error); 7099 } 7100 7101 /* 7102 * Set up the XDR arguments for the LayoutGet operation. 7103 */ 7104 static void 7105 nfsrv_setuplayoutget(struct nfsrv_descript *nd, int iomode, uint64_t offset, 7106 uint64_t len, uint64_t minlen, nfsv4stateid_t *stateidp, int layouttype, 7107 int layoutlen, int usecurstateid) 7108 { 7109 uint32_t *tl; 7110 7111 NFSM_BUILD(tl, uint32_t *, 4 * NFSX_UNSIGNED + 3 * NFSX_HYPER + 7112 NFSX_STATEID); 7113 *tl++ = newnfs_false; /* Don't signal availability. */ 7114 *tl++ = txdr_unsigned(layouttype); 7115 *tl++ = txdr_unsigned(iomode); 7116 txdr_hyper(offset, tl); 7117 tl += 2; 7118 txdr_hyper(len, tl); 7119 tl += 2; 7120 txdr_hyper(minlen, tl); 7121 tl += 2; 7122 if (usecurstateid != 0) { 7123 /* Special stateid for Current stateid. */ 7124 *tl++ = txdr_unsigned(1); 7125 *tl++ = 0; 7126 *tl++ = 0; 7127 *tl++ = 0; 7128 } else { 7129 *tl++ = txdr_unsigned(stateidp->seqid); 7130 NFSCL_DEBUG(4, "layget seq=%d\n", (int)stateidp->seqid); 7131 *tl++ = stateidp->other[0]; 7132 *tl++ = stateidp->other[1]; 7133 *tl++ = stateidp->other[2]; 7134 } 7135 *tl = txdr_unsigned(layoutlen); 7136 } 7137 7138 /* 7139 * Parse the reply for a successful LayoutGet operation. 7140 */ 7141 static int 7142 nfsrv_parselayoutget(struct nfsmount *nmp, struct nfsrv_descript *nd, 7143 nfsv4stateid_t *stateidp, int *retonclosep, struct nfsclflayouthead *flhp) 7144 { 7145 uint32_t *tl; 7146 struct nfsclflayout *flp, *prevflp, *tflp; 7147 int cnt, error, fhcnt, gotiomode, i, iomode, j, k, l, laytype, nfhlen; 7148 int m, mirrorcnt; 7149 uint64_t retlen, off; 7150 struct nfsfh *nfhp; 7151 uint8_t *cp; 7152 uid_t user; 7153 gid_t grp; 7154 7155 NFSCL_DEBUG(4, "in nfsrv_parselayoutget\n"); 7156 error = 0; 7157 flp = NULL; 7158 gotiomode = -1; 7159 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED + NFSX_STATEID); 7160 if (*tl++ != 0) 7161 *retonclosep = 1; 7162 else 7163 *retonclosep = 0; 7164 stateidp->seqid = fxdr_unsigned(uint32_t, *tl++); 7165 NFSCL_DEBUG(4, "retoncls=%d stseq=%d\n", *retonclosep, 7166 (int)stateidp->seqid); 7167 stateidp->other[0] = *tl++; 7168 stateidp->other[1] = *tl++; 7169 stateidp->other[2] = *tl++; 7170 cnt = fxdr_unsigned(int, *tl); 7171 NFSCL_DEBUG(4, "layg cnt=%d\n", cnt); 7172 if (cnt <= 0 || cnt > 10000) { 7173 /* Don't accept more than 10000 layouts in reply. */ 7174 error = NFSERR_BADXDR; 7175 goto nfsmout; 7176 } 7177 for (i = 0; i < cnt; i++) { 7178 /* Dissect to the layout type. */ 7179 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_HYPER + 7180 3 * NFSX_UNSIGNED); 7181 off = fxdr_hyper(tl); tl += 2; 7182 retlen = fxdr_hyper(tl); tl += 2; 7183 iomode = fxdr_unsigned(int, *tl++); 7184 laytype = fxdr_unsigned(int, *tl); 7185 NFSCL_DEBUG(4, "layt=%d off=%ju len=%ju iom=%d\n", laytype, 7186 (uintmax_t)off, (uintmax_t)retlen, iomode); 7187 /* Ignore length of layout body for now. */ 7188 if (laytype == NFSLAYOUT_NFSV4_1_FILES) { 7189 /* Parse the File layout up to fhcnt. */ 7190 NFSM_DISSECT(tl, uint32_t *, 3 * NFSX_UNSIGNED + 7191 NFSX_HYPER + NFSX_V4DEVICEID); 7192 fhcnt = fxdr_unsigned(int, *(tl + 4 + 7193 NFSX_V4DEVICEID / NFSX_UNSIGNED)); 7194 NFSCL_DEBUG(4, "fhcnt=%d\n", fhcnt); 7195 if (fhcnt < 0 || fhcnt > 100) { 7196 /* Don't accept more than 100 file handles. */ 7197 error = NFSERR_BADXDR; 7198 goto nfsmout; 7199 } 7200 if (fhcnt > 0) 7201 flp = malloc(sizeof(*flp) + fhcnt * 7202 sizeof(struct nfsfh *), M_NFSFLAYOUT, 7203 M_WAITOK); 7204 else 7205 flp = malloc(sizeof(*flp), M_NFSFLAYOUT, 7206 M_WAITOK); 7207 flp->nfsfl_flags = NFSFL_FILE; 7208 flp->nfsfl_fhcnt = 0; 7209 flp->nfsfl_devp = NULL; 7210 flp->nfsfl_off = off; 7211 if (flp->nfsfl_off + retlen < flp->nfsfl_off) 7212 flp->nfsfl_end = UINT64_MAX - flp->nfsfl_off; 7213 else 7214 flp->nfsfl_end = flp->nfsfl_off + retlen; 7215 flp->nfsfl_iomode = iomode; 7216 if (gotiomode == -1) 7217 gotiomode = flp->nfsfl_iomode; 7218 /* Ignore layout body length for now. */ 7219 NFSBCOPY(tl, flp->nfsfl_dev, NFSX_V4DEVICEID); 7220 tl += (NFSX_V4DEVICEID / NFSX_UNSIGNED); 7221 flp->nfsfl_util = fxdr_unsigned(uint32_t, *tl++); 7222 NFSCL_DEBUG(4, "flutil=0x%x\n", flp->nfsfl_util); 7223 mtx_lock(&nmp->nm_mtx); 7224 if (nmp->nm_minorvers > 1 && (flp->nfsfl_util & 7225 NFSFLAYUTIL_IOADVISE_THRU_MDS) != 0) 7226 nmp->nm_privflag |= NFSMNTP_IOADVISETHRUMDS; 7227 mtx_unlock(&nmp->nm_mtx); 7228 flp->nfsfl_stripe1 = fxdr_unsigned(uint32_t, *tl++); 7229 flp->nfsfl_patoff = fxdr_hyper(tl); tl += 2; 7230 NFSCL_DEBUG(4, "stripe1=%u poff=%ju\n", 7231 flp->nfsfl_stripe1, (uintmax_t)flp->nfsfl_patoff); 7232 for (j = 0; j < fhcnt; j++) { 7233 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 7234 nfhlen = fxdr_unsigned(int, *tl); 7235 if (nfhlen <= 0 || nfhlen > NFSX_V4FHMAX) { 7236 error = NFSERR_BADXDR; 7237 goto nfsmout; 7238 } 7239 nfhp = malloc(sizeof(*nfhp) + nfhlen - 1, 7240 M_NFSFH, M_WAITOK); 7241 flp->nfsfl_fh[j] = nfhp; 7242 flp->nfsfl_fhcnt++; 7243 nfhp->nfh_len = nfhlen; 7244 NFSM_DISSECT(cp, uint8_t *, NFSM_RNDUP(nfhlen)); 7245 NFSBCOPY(cp, nfhp->nfh_fh, nfhlen); 7246 } 7247 } else if (laytype == NFSLAYOUT_FLEXFILE) { 7248 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED + 7249 NFSX_HYPER); 7250 mirrorcnt = fxdr_unsigned(int, *(tl + 2)); 7251 NFSCL_DEBUG(4, "mirrorcnt=%d\n", mirrorcnt); 7252 if (mirrorcnt < 1 || mirrorcnt > NFSDEV_MAXMIRRORS) { 7253 error = NFSERR_BADXDR; 7254 goto nfsmout; 7255 } 7256 flp = malloc(sizeof(*flp) + mirrorcnt * 7257 sizeof(struct nfsffm), M_NFSFLAYOUT, M_WAITOK); 7258 flp->nfsfl_flags = NFSFL_FLEXFILE; 7259 flp->nfsfl_mirrorcnt = mirrorcnt; 7260 for (j = 0; j < mirrorcnt; j++) 7261 flp->nfsfl_ffm[j].devp = NULL; 7262 flp->nfsfl_off = off; 7263 if (flp->nfsfl_off + retlen < flp->nfsfl_off) 7264 flp->nfsfl_end = UINT64_MAX - flp->nfsfl_off; 7265 else 7266 flp->nfsfl_end = flp->nfsfl_off + retlen; 7267 flp->nfsfl_iomode = iomode; 7268 if (gotiomode == -1) 7269 gotiomode = flp->nfsfl_iomode; 7270 flp->nfsfl_stripeunit = fxdr_hyper(tl); 7271 NFSCL_DEBUG(4, "stripeunit=%ju\n", 7272 (uintmax_t)flp->nfsfl_stripeunit); 7273 for (j = 0; j < mirrorcnt; j++) { 7274 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 7275 k = fxdr_unsigned(int, *tl); 7276 if (k < 1 || k > 128) { 7277 error = NFSERR_BADXDR; 7278 goto nfsmout; 7279 } 7280 NFSCL_DEBUG(4, "servercnt=%d\n", k); 7281 for (l = 0; l < k; l++) { 7282 NFSM_DISSECT(tl, uint32_t *, 7283 NFSX_V4DEVICEID + NFSX_STATEID + 7284 2 * NFSX_UNSIGNED); 7285 if (l == 0) { 7286 /* Just use the first server. */ 7287 NFSBCOPY(tl, 7288 flp->nfsfl_ffm[j].dev, 7289 NFSX_V4DEVICEID); 7290 tl += (NFSX_V4DEVICEID / 7291 NFSX_UNSIGNED); 7292 tl++; 7293 flp->nfsfl_ffm[j].st.seqid = 7294 *tl++; 7295 flp->nfsfl_ffm[j].st.other[0] = 7296 *tl++; 7297 flp->nfsfl_ffm[j].st.other[1] = 7298 *tl++; 7299 flp->nfsfl_ffm[j].st.other[2] = 7300 *tl++; 7301 NFSCL_DEBUG(4, "st.seqid=%u " 7302 "st.o0=0x%x st.o1=0x%x " 7303 "st.o2=0x%x\n", 7304 flp->nfsfl_ffm[j].st.seqid, 7305 flp->nfsfl_ffm[j].st.other[0], 7306 flp->nfsfl_ffm[j].st.other[1], 7307 flp->nfsfl_ffm[j].st.other[2]); 7308 } else 7309 tl += ((NFSX_V4DEVICEID + 7310 NFSX_STATEID + 7311 NFSX_UNSIGNED) / 7312 NFSX_UNSIGNED); 7313 fhcnt = fxdr_unsigned(int, *tl); 7314 NFSCL_DEBUG(4, "fhcnt=%d\n", fhcnt); 7315 if (fhcnt < 1 || 7316 fhcnt > NFSDEV_MAXVERS) { 7317 error = NFSERR_BADXDR; 7318 goto nfsmout; 7319 } 7320 for (m = 0; m < fhcnt; m++) { 7321 NFSM_DISSECT(tl, uint32_t *, 7322 NFSX_UNSIGNED); 7323 nfhlen = fxdr_unsigned(int, 7324 *tl); 7325 NFSCL_DEBUG(4, "nfhlen=%d\n", 7326 nfhlen); 7327 if (nfhlen <= 0 || nfhlen > 7328 NFSX_V4FHMAX) { 7329 error = NFSERR_BADXDR; 7330 goto nfsmout; 7331 } 7332 NFSM_DISSECT(cp, uint8_t *, 7333 NFSM_RNDUP(nfhlen)); 7334 if (l == 0) { 7335 flp->nfsfl_ffm[j].fhcnt 7336 = fhcnt; 7337 nfhp = malloc( 7338 sizeof(*nfhp) + 7339 nfhlen - 1, M_NFSFH, 7340 M_WAITOK); 7341 flp->nfsfl_ffm[j].fh[m] 7342 = nfhp; 7343 nfhp->nfh_len = nfhlen; 7344 NFSBCOPY(cp, 7345 nfhp->nfh_fh, 7346 nfhlen); 7347 NFSCL_DEBUG(4, 7348 "got fh\n"); 7349 } 7350 } 7351 /* Now, get the ffsd_user/ffds_group. */ 7352 error = nfsrv_parseug(nd, 0, &user, 7353 &grp, curthread); 7354 NFSCL_DEBUG(4, "after parseu=%d\n", 7355 error); 7356 if (error == 0) 7357 error = nfsrv_parseug(nd, 1, 7358 &user, &grp, curthread); 7359 NFSCL_DEBUG(4, "aft parseg=%d\n", 7360 grp); 7361 if (error != 0) 7362 goto nfsmout; 7363 NFSCL_DEBUG(4, "user=%d group=%d\n", 7364 user, grp); 7365 if (l == 0) { 7366 flp->nfsfl_ffm[j].user = user; 7367 flp->nfsfl_ffm[j].group = grp; 7368 NFSCL_DEBUG(4, 7369 "usr=%d grp=%d\n", user, 7370 grp); 7371 } 7372 } 7373 } 7374 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED); 7375 flp->nfsfl_fflags = fxdr_unsigned(uint32_t, *tl++); 7376 #ifdef notnow 7377 /* 7378 * At this time, there is no flag. 7379 * NFSFLEXFLAG_IOADVISE_THRU_MDS might need to be 7380 * added, or it may never exist? 7381 */ 7382 mtx_lock(&nmp->nm_mtx); 7383 if (nmp->nm_minorvers > 1 && (flp->nfsfl_fflags & 7384 NFSFLEXFLAG_IOADVISE_THRU_MDS) != 0) 7385 nmp->nm_privflag |= NFSMNTP_IOADVISETHRUMDS; 7386 mtx_unlock(&nmp->nm_mtx); 7387 #endif 7388 flp->nfsfl_statshint = fxdr_unsigned(uint32_t, *tl); 7389 NFSCL_DEBUG(4, "fflags=0x%x statshint=%d\n", 7390 flp->nfsfl_fflags, flp->nfsfl_statshint); 7391 } else { 7392 error = NFSERR_BADXDR; 7393 goto nfsmout; 7394 } 7395 if (flp->nfsfl_iomode == gotiomode) { 7396 /* Keep the list in increasing offset order. */ 7397 tflp = LIST_FIRST(flhp); 7398 prevflp = NULL; 7399 while (tflp != NULL && 7400 tflp->nfsfl_off < flp->nfsfl_off) { 7401 prevflp = tflp; 7402 tflp = LIST_NEXT(tflp, nfsfl_list); 7403 } 7404 if (prevflp == NULL) 7405 LIST_INSERT_HEAD(flhp, flp, nfsfl_list); 7406 else 7407 LIST_INSERT_AFTER(prevflp, flp, 7408 nfsfl_list); 7409 NFSCL_DEBUG(4, "flp inserted\n"); 7410 } else { 7411 printf("nfscl_layoutget(): got wrong iomode\n"); 7412 nfscl_freeflayout(flp); 7413 } 7414 flp = NULL; 7415 } 7416 nfsmout: 7417 NFSCL_DEBUG(4, "eo nfsrv_parselayoutget=%d\n", error); 7418 if (error != 0 && flp != NULL) 7419 nfscl_freeflayout(flp); 7420 return (error); 7421 } 7422 7423 /* 7424 * Parse a user/group digit string. 7425 */ 7426 static int 7427 nfsrv_parseug(struct nfsrv_descript *nd, int dogrp, uid_t *uidp, gid_t *gidp, 7428 NFSPROC_T *p) 7429 { 7430 uint32_t *tl; 7431 char *cp, *str, str0[NFSV4_SMALLSTR + 1]; 7432 uint32_t len = 0; 7433 int error = 0; 7434 7435 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 7436 len = fxdr_unsigned(uint32_t, *tl); 7437 str = NULL; 7438 if (len > NFSV4_OPAQUELIMIT) { 7439 error = NFSERR_BADXDR; 7440 goto nfsmout; 7441 } 7442 NFSCL_DEBUG(4, "nfsrv_parseug: len=%d\n", len); 7443 if (len == 0) { 7444 if (dogrp != 0) 7445 *gidp = GID_NOGROUP; 7446 else 7447 *uidp = UID_NOBODY; 7448 return (0); 7449 } 7450 if (len > NFSV4_SMALLSTR) 7451 str = malloc(len + 1, M_TEMP, M_WAITOK); 7452 else 7453 str = str0; 7454 NFSM_DISSECT(cp, char *, NFSM_RNDUP(len)); 7455 NFSBCOPY(cp, str, len); 7456 str[len] = '\0'; 7457 NFSCL_DEBUG(4, "nfsrv_parseug: str=%s\n", str); 7458 if (dogrp != 0) 7459 error = nfsv4_strtogid(nd, str, len, gidp); 7460 else 7461 error = nfsv4_strtouid(nd, str, len, uidp); 7462 nfsmout: 7463 if (len > NFSV4_SMALLSTR) 7464 free(str, M_TEMP); 7465 NFSCL_DEBUG(4, "eo nfsrv_parseug=%d\n", error); 7466 return (error); 7467 } 7468 7469 /* 7470 * Similar to nfsrpc_getlayout(), except that it uses nfsrpc_openlayget(), 7471 * so that it does both an Open and a Layoutget. 7472 */ 7473 static int 7474 nfsrpc_getopenlayout(struct nfsmount *nmp, vnode_t vp, u_int8_t *nfhp, 7475 int fhlen, uint8_t *newfhp, int newfhlen, uint32_t mode, 7476 struct nfsclopen *op, uint8_t *name, int namelen, struct nfscldeleg **dpp, 7477 struct ucred *cred, NFSPROC_T *p) 7478 { 7479 struct nfscllayout *lyp; 7480 struct nfsclflayout *flp; 7481 struct nfsclflayouthead flh; 7482 int error, islocked, layoutlen, recalled, retonclose, usecurstateid; 7483 int layouttype, laystat; 7484 nfsv4stateid_t stateid; 7485 struct nfsclsession *tsep; 7486 7487 error = 0; 7488 if (NFSHASFLEXFILE(nmp)) 7489 layouttype = NFSLAYOUT_FLEXFILE; 7490 else 7491 layouttype = NFSLAYOUT_NFSV4_1_FILES; 7492 /* 7493 * If lyp is returned non-NULL, there will be a refcnt (shared lock) 7494 * on it, iff flp != NULL or a lock (exclusive lock) on it iff 7495 * flp == NULL. 7496 */ 7497 lyp = nfscl_getlayout(nmp->nm_clp, newfhp, newfhlen, 0, &flp, 7498 &recalled); 7499 NFSCL_DEBUG(4, "nfsrpc_getopenlayout nfscl_getlayout lyp=%p\n", lyp); 7500 if (lyp == NULL) 7501 islocked = 0; 7502 else if (flp != NULL) 7503 islocked = 1; 7504 else 7505 islocked = 2; 7506 if ((lyp == NULL || flp == NULL) && recalled == 0) { 7507 LIST_INIT(&flh); 7508 tsep = nfsmnt_mdssession(nmp); 7509 layoutlen = tsep->nfsess_maxcache - (NFSX_STATEID + 7510 3 * NFSX_UNSIGNED); 7511 if (lyp == NULL) 7512 usecurstateid = 1; 7513 else { 7514 usecurstateid = 0; 7515 stateid.seqid = lyp->nfsly_stateid.seqid; 7516 stateid.other[0] = lyp->nfsly_stateid.other[0]; 7517 stateid.other[1] = lyp->nfsly_stateid.other[1]; 7518 stateid.other[2] = lyp->nfsly_stateid.other[2]; 7519 } 7520 error = nfsrpc_openlayoutrpc(nmp, vp, nfhp, fhlen, 7521 newfhp, newfhlen, mode, op, name, namelen, 7522 dpp, &stateid, usecurstateid, layouttype, layoutlen, 7523 &retonclose, &flh, &laystat, cred, p); 7524 NFSCL_DEBUG(4, "aft nfsrpc_openlayoutrpc laystat=%d err=%d\n", 7525 laystat, error); 7526 laystat = nfsrpc_layoutgetres(nmp, vp, newfhp, newfhlen, 7527 &stateid, retonclose, NULL, &lyp, &flh, layouttype, laystat, 7528 &islocked, cred, p); 7529 } else 7530 error = nfsrpc_openrpc(nmp, vp, nfhp, fhlen, newfhp, newfhlen, 7531 mode, op, name, namelen, dpp, 0, 0, cred, p, 0, 0); 7532 if (islocked == 2) 7533 nfscl_rellayout(lyp, 1); 7534 else if (islocked == 1) 7535 nfscl_rellayout(lyp, 0); 7536 return (error); 7537 } 7538 7539 /* 7540 * This function does an Open+LayoutGet for an NFSv4.1 mount with pNFS 7541 * enabled, only for the CLAIM_NULL case. All other NFSv4 Opens are 7542 * handled by nfsrpc_openrpc(). 7543 * For the case where op == NULL, dvp is the directory. When op != NULL, it 7544 * can be NULL. 7545 */ 7546 static int 7547 nfsrpc_openlayoutrpc(struct nfsmount *nmp, vnode_t vp, u_int8_t *nfhp, 7548 int fhlen, uint8_t *newfhp, int newfhlen, uint32_t mode, 7549 struct nfsclopen *op, uint8_t *name, int namelen, struct nfscldeleg **dpp, 7550 nfsv4stateid_t *stateidp, int usecurstateid, int layouttype, 7551 int layoutlen, int *retonclosep, struct nfsclflayouthead *flhp, 7552 int *laystatp, struct ucred *cred, NFSPROC_T *p) 7553 { 7554 uint32_t *tl; 7555 struct nfsrv_descript nfsd, *nd = &nfsd; 7556 struct nfscldeleg *ndp = NULL; 7557 struct nfsvattr nfsva; 7558 struct nfsclsession *tsep; 7559 uint32_t rflags, deleg; 7560 nfsattrbit_t attrbits; 7561 int error, ret, acesize, limitby, iomode; 7562 7563 *dpp = NULL; 7564 *laystatp = ENXIO; 7565 nfscl_reqstart(nd, NFSPROC_OPENLAYGET, nmp, nfhp, fhlen, NULL, NULL, 7566 0, 0, false); 7567 NFSM_BUILD(tl, uint32_t *, 5 * NFSX_UNSIGNED); 7568 *tl++ = txdr_unsigned(op->nfso_own->nfsow_seqid); 7569 *tl++ = txdr_unsigned(mode & NFSV4OPEN_ACCESSBOTH); 7570 *tl++ = txdr_unsigned((mode >> NFSLCK_SHIFT) & NFSV4OPEN_DENYBOTH); 7571 tsep = nfsmnt_mdssession(nmp); 7572 *tl++ = tsep->nfsess_clientid.lval[0]; 7573 *tl = tsep->nfsess_clientid.lval[1]; 7574 nfsm_strtom(nd, op->nfso_own->nfsow_owner, NFSV4CL_LOCKNAMELEN); 7575 NFSM_BUILD(tl, uint32_t *, 2 * NFSX_UNSIGNED); 7576 *tl++ = txdr_unsigned(NFSV4OPEN_NOCREATE); 7577 *tl = txdr_unsigned(NFSV4OPEN_CLAIMNULL); 7578 nfsm_strtom(nd, name, namelen); 7579 NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED); 7580 *tl = txdr_unsigned(NFSV4OP_GETATTR); 7581 NFSZERO_ATTRBIT(&attrbits); 7582 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_CHANGE); 7583 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_TIMEMODIFY); 7584 nfsrv_putattrbit(nd, &attrbits); 7585 NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED); 7586 *tl = txdr_unsigned(NFSV4OP_LAYOUTGET); 7587 if ((mode & NFSV4OPEN_ACCESSWRITE) != 0) 7588 iomode = NFSLAYOUTIOMODE_RW; 7589 else 7590 iomode = NFSLAYOUTIOMODE_READ; 7591 nfsrv_setuplayoutget(nd, iomode, 0, UINT64_MAX, 0, stateidp, 7592 layouttype, layoutlen, usecurstateid); 7593 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, vp, p, cred, 7594 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 7595 if (error != 0) 7596 return (error); 7597 NFSCL_INCRSEQID(op->nfso_own->nfsow_seqid, nd); 7598 if (nd->nd_repstat != 0) 7599 *laystatp = nd->nd_repstat; 7600 if ((nd->nd_flag & ND_NOMOREDATA) == 0) { 7601 /* ND_NOMOREDATA will be set if the Open operation failed. */ 7602 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID + 7603 6 * NFSX_UNSIGNED); 7604 op->nfso_stateid.seqid = *tl++; 7605 op->nfso_stateid.other[0] = *tl++; 7606 op->nfso_stateid.other[1] = *tl++; 7607 op->nfso_stateid.other[2] = *tl; 7608 rflags = fxdr_unsigned(u_int32_t, *(tl + 6)); 7609 error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL); 7610 if (error != 0) 7611 goto nfsmout; 7612 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 7613 deleg = fxdr_unsigned(u_int32_t, *tl); 7614 if (deleg == NFSV4OPEN_DELEGATEREAD || 7615 deleg == NFSV4OPEN_DELEGATEWRITE) { 7616 if (!(op->nfso_own->nfsow_clp->nfsc_flags & 7617 NFSCLFLAGS_FIRSTDELEG)) 7618 op->nfso_own->nfsow_clp->nfsc_flags |= 7619 (NFSCLFLAGS_FIRSTDELEG | NFSCLFLAGS_GOTDELEG); 7620 ndp = malloc(sizeof(struct nfscldeleg) + newfhlen, 7621 M_NFSCLDELEG, M_WAITOK); 7622 LIST_INIT(&ndp->nfsdl_owner); 7623 LIST_INIT(&ndp->nfsdl_lock); 7624 ndp->nfsdl_clp = op->nfso_own->nfsow_clp; 7625 ndp->nfsdl_fhlen = newfhlen; 7626 NFSBCOPY(newfhp, ndp->nfsdl_fh, newfhlen); 7627 newnfs_copyincred(cred, &ndp->nfsdl_cred); 7628 nfscl_lockinit(&ndp->nfsdl_rwlock); 7629 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID + 7630 NFSX_UNSIGNED); 7631 ndp->nfsdl_stateid.seqid = *tl++; 7632 ndp->nfsdl_stateid.other[0] = *tl++; 7633 ndp->nfsdl_stateid.other[1] = *tl++; 7634 ndp->nfsdl_stateid.other[2] = *tl++; 7635 ret = fxdr_unsigned(int, *tl); 7636 if (deleg == NFSV4OPEN_DELEGATEWRITE) { 7637 ndp->nfsdl_flags = NFSCLDL_WRITE; 7638 /* 7639 * Indicates how much the file can grow. 7640 */ 7641 NFSM_DISSECT(tl, u_int32_t *, 7642 3 * NFSX_UNSIGNED); 7643 limitby = fxdr_unsigned(int, *tl++); 7644 switch (limitby) { 7645 case NFSV4OPEN_LIMITSIZE: 7646 ndp->nfsdl_sizelimit = fxdr_hyper(tl); 7647 break; 7648 case NFSV4OPEN_LIMITBLOCKS: 7649 ndp->nfsdl_sizelimit = 7650 fxdr_unsigned(u_int64_t, *tl++); 7651 ndp->nfsdl_sizelimit *= 7652 fxdr_unsigned(u_int64_t, *tl); 7653 break; 7654 default: 7655 error = NFSERR_BADXDR; 7656 goto nfsmout; 7657 }; 7658 } else 7659 ndp->nfsdl_flags = NFSCLDL_READ; 7660 if (ret != 0) 7661 ndp->nfsdl_flags |= NFSCLDL_RECALL; 7662 error = nfsrv_dissectace(nd, &ndp->nfsdl_ace, &ret, 7663 &acesize, p); 7664 if (error != 0) 7665 goto nfsmout; 7666 } else if (deleg != NFSV4OPEN_DELEGATENONE) { 7667 error = NFSERR_BADXDR; 7668 goto nfsmout; 7669 } 7670 if ((rflags & NFSV4OPEN_LOCKTYPEPOSIX) != 0 || 7671 nfscl_assumeposixlocks) 7672 op->nfso_posixlock = 1; 7673 else 7674 op->nfso_posixlock = 0; 7675 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 7676 /* If the 2nd element == NFS_OK, the Getattr succeeded. */ 7677 if (*++tl == 0) { 7678 error = nfsv4_loadattr(nd, NULL, &nfsva, NULL, 7679 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0, 7680 NULL, NULL, NULL, p, cred); 7681 if (error != 0) 7682 goto nfsmout; 7683 if (ndp != NULL) { 7684 ndp->nfsdl_change = nfsva.na_filerev; 7685 ndp->nfsdl_modtime = nfsva.na_mtime; 7686 ndp->nfsdl_flags |= NFSCLDL_MODTIMESET; 7687 *dpp = ndp; 7688 ndp = NULL; 7689 } 7690 /* 7691 * At this point, the Open has succeeded, so set 7692 * nd_repstat = NFS_OK. If the Layoutget failed, 7693 * this function just won't return a layout. 7694 */ 7695 if (nd->nd_repstat == 0) { 7696 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED); 7697 *laystatp = fxdr_unsigned(int, *++tl); 7698 if (*laystatp == 0) { 7699 error = nfsrv_parselayoutget(nmp, nd, 7700 stateidp, retonclosep, flhp); 7701 if (error != 0) 7702 *laystatp = error; 7703 } 7704 } else 7705 nd->nd_repstat = 0; /* Return 0 for Open. */ 7706 } 7707 } 7708 if (nd->nd_repstat != 0 && error == 0) 7709 error = nd->nd_repstat; 7710 nfsmout: 7711 free(ndp, M_NFSCLDELEG); 7712 m_freem(nd->nd_mrep); 7713 return (error); 7714 } 7715 7716 /* 7717 * Similar nfsrpc_createv4(), but also does the LayoutGet operation. 7718 * Used only for mounts with pNFS enabled. 7719 */ 7720 static int 7721 nfsrpc_createlayout(vnode_t dvp, char *name, int namelen, struct vattr *vap, 7722 nfsquad_t cverf, int fmode, struct nfsclowner *owp, struct nfscldeleg **dpp, 7723 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap, 7724 struct nfsvattr *nnap, struct nfsfh **nfhpp, int *attrflagp, 7725 int *dattrflagp, void *dstuff, int *unlockedp, nfsv4stateid_t *stateidp, 7726 int usecurstateid, int layouttype, int layoutlen, int *retonclosep, 7727 struct nfsclflayouthead *flhp, int *laystatp) 7728 { 7729 uint32_t *tl; 7730 int error = 0, deleg, newone, ret, acesize, limitby; 7731 struct nfsrv_descript nfsd, *nd = &nfsd; 7732 struct nfsclopen *op; 7733 struct nfscldeleg *dp = NULL; 7734 struct nfsnode *np; 7735 struct nfsfh *nfhp; 7736 struct nfsclsession *tsep; 7737 nfsattrbit_t attrbits; 7738 nfsv4stateid_t stateid; 7739 struct nfsmount *nmp; 7740 7741 nmp = VFSTONFS(dvp->v_mount); 7742 np = VTONFS(dvp); 7743 *laystatp = ENXIO; 7744 *unlockedp = 0; 7745 *nfhpp = NULL; 7746 *dpp = NULL; 7747 *attrflagp = 0; 7748 *dattrflagp = 0; 7749 if (namelen > NFS_MAXNAMLEN) 7750 return (ENAMETOOLONG); 7751 NFSCL_REQSTART(nd, NFSPROC_CREATELAYGET, dvp); 7752 /* 7753 * For V4, this is actually an Open op. 7754 */ 7755 NFSM_BUILD(tl, u_int32_t *, 5 * NFSX_UNSIGNED); 7756 *tl++ = txdr_unsigned(owp->nfsow_seqid); 7757 *tl++ = txdr_unsigned(NFSV4OPEN_ACCESSWRITE | 7758 NFSV4OPEN_ACCESSREAD); 7759 *tl++ = txdr_unsigned(NFSV4OPEN_DENYNONE); 7760 tsep = nfsmnt_mdssession(nmp); 7761 *tl++ = tsep->nfsess_clientid.lval[0]; 7762 *tl = tsep->nfsess_clientid.lval[1]; 7763 nfsm_strtom(nd, owp->nfsow_owner, NFSV4CL_LOCKNAMELEN); 7764 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 7765 *tl++ = txdr_unsigned(NFSV4OPEN_CREATE); 7766 if ((fmode & O_EXCL) != 0) { 7767 if (NFSHASSESSPERSIST(nmp)) { 7768 /* Use GUARDED for persistent sessions. */ 7769 *tl = txdr_unsigned(NFSCREATE_GUARDED); 7770 nfscl_fillsattr(nd, vap, dvp, 0, 0); 7771 } else { 7772 /* Otherwise, use EXCLUSIVE4_1. */ 7773 *tl = txdr_unsigned(NFSCREATE_EXCLUSIVE41); 7774 NFSM_BUILD(tl, u_int32_t *, NFSX_VERF); 7775 *tl++ = cverf.lval[0]; 7776 *tl = cverf.lval[1]; 7777 nfscl_fillsattr(nd, vap, dvp, 0, 0); 7778 } 7779 } else { 7780 *tl = txdr_unsigned(NFSCREATE_UNCHECKED); 7781 nfscl_fillsattr(nd, vap, dvp, 0, 0); 7782 } 7783 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 7784 *tl = txdr_unsigned(NFSV4OPEN_CLAIMNULL); 7785 nfsm_strtom(nd, name, namelen); 7786 /* Get the new file's handle and attributes, plus save the FH. */ 7787 NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 7788 *tl++ = txdr_unsigned(NFSV4OP_SAVEFH); 7789 *tl++ = txdr_unsigned(NFSV4OP_GETFH); 7790 *tl = txdr_unsigned(NFSV4OP_GETATTR); 7791 NFSGETATTR_ATTRBIT(&attrbits); 7792 nfsrv_putattrbit(nd, &attrbits); 7793 /* Get the directory's post-op attributes. */ 7794 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 7795 *tl = txdr_unsigned(NFSV4OP_PUTFH); 7796 nfsm_fhtom(nd, np->n_fhp->nfh_fh, np->n_fhp->nfh_len, 0); 7797 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 7798 *tl = txdr_unsigned(NFSV4OP_GETATTR); 7799 nfsrv_putattrbit(nd, &attrbits); 7800 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 7801 *tl++ = txdr_unsigned(NFSV4OP_RESTOREFH); 7802 *tl = txdr_unsigned(NFSV4OP_LAYOUTGET); 7803 nfsrv_setuplayoutget(nd, NFSLAYOUTIOMODE_RW, 0, UINT64_MAX, 0, stateidp, 7804 layouttype, layoutlen, usecurstateid); 7805 error = nfscl_request(nd, dvp, p, cred, dstuff); 7806 if (error != 0) 7807 return (error); 7808 NFSCL_DEBUG(4, "nfsrpc_createlayout stat=%d err=%d\n", nd->nd_repstat, 7809 error); 7810 if (nd->nd_repstat != 0) 7811 *laystatp = nd->nd_repstat; 7812 NFSCL_INCRSEQID(owp->nfsow_seqid, nd); 7813 if ((nd->nd_flag & ND_NOMOREDATA) == 0) { 7814 NFSCL_DEBUG(4, "nfsrpc_createlayout open succeeded\n"); 7815 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID + 7816 6 * NFSX_UNSIGNED); 7817 stateid.seqid = *tl++; 7818 stateid.other[0] = *tl++; 7819 stateid.other[1] = *tl++; 7820 stateid.other[2] = *tl; 7821 nfsrv_getattrbits(nd, &attrbits, NULL, NULL); 7822 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 7823 deleg = fxdr_unsigned(int, *tl); 7824 if (deleg == NFSV4OPEN_DELEGATEREAD || 7825 deleg == NFSV4OPEN_DELEGATEWRITE) { 7826 if (!(owp->nfsow_clp->nfsc_flags & 7827 NFSCLFLAGS_FIRSTDELEG)) 7828 owp->nfsow_clp->nfsc_flags |= 7829 (NFSCLFLAGS_FIRSTDELEG | NFSCLFLAGS_GOTDELEG); 7830 dp = malloc(sizeof(struct nfscldeleg) + NFSX_V4FHMAX, 7831 M_NFSCLDELEG, M_WAITOK); 7832 LIST_INIT(&dp->nfsdl_owner); 7833 LIST_INIT(&dp->nfsdl_lock); 7834 dp->nfsdl_clp = owp->nfsow_clp; 7835 newnfs_copyincred(cred, &dp->nfsdl_cred); 7836 nfscl_lockinit(&dp->nfsdl_rwlock); 7837 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID + 7838 NFSX_UNSIGNED); 7839 dp->nfsdl_stateid.seqid = *tl++; 7840 dp->nfsdl_stateid.other[0] = *tl++; 7841 dp->nfsdl_stateid.other[1] = *tl++; 7842 dp->nfsdl_stateid.other[2] = *tl++; 7843 ret = fxdr_unsigned(int, *tl); 7844 if (deleg == NFSV4OPEN_DELEGATEWRITE) { 7845 dp->nfsdl_flags = NFSCLDL_WRITE; 7846 /* 7847 * Indicates how much the file can grow. 7848 */ 7849 NFSM_DISSECT(tl, u_int32_t *, 7850 3 * NFSX_UNSIGNED); 7851 limitby = fxdr_unsigned(int, *tl++); 7852 switch (limitby) { 7853 case NFSV4OPEN_LIMITSIZE: 7854 dp->nfsdl_sizelimit = fxdr_hyper(tl); 7855 break; 7856 case NFSV4OPEN_LIMITBLOCKS: 7857 dp->nfsdl_sizelimit = 7858 fxdr_unsigned(u_int64_t, *tl++); 7859 dp->nfsdl_sizelimit *= 7860 fxdr_unsigned(u_int64_t, *tl); 7861 break; 7862 default: 7863 error = NFSERR_BADXDR; 7864 goto nfsmout; 7865 }; 7866 } else { 7867 dp->nfsdl_flags = NFSCLDL_READ; 7868 } 7869 if (ret != 0) 7870 dp->nfsdl_flags |= NFSCLDL_RECALL; 7871 error = nfsrv_dissectace(nd, &dp->nfsdl_ace, &ret, 7872 &acesize, p); 7873 if (error != 0) 7874 goto nfsmout; 7875 } else if (deleg != NFSV4OPEN_DELEGATENONE) { 7876 error = NFSERR_BADXDR; 7877 goto nfsmout; 7878 } 7879 7880 /* Now, we should have the status for the SaveFH. */ 7881 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED); 7882 if (*++tl == 0) { 7883 NFSCL_DEBUG(4, "nfsrpc_createlayout SaveFH ok\n"); 7884 /* 7885 * Now, process the GetFH and Getattr for the newly 7886 * created file. nfscl_mtofh() will set 7887 * ND_NOMOREDATA if these weren't successful. 7888 */ 7889 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp); 7890 NFSCL_DEBUG(4, "aft nfscl_mtofh err=%d\n", error); 7891 if (error != 0) 7892 goto nfsmout; 7893 } else 7894 nd->nd_flag |= ND_NOMOREDATA; 7895 /* Now we have the PutFH and Getattr for the directory. */ 7896 if ((nd->nd_flag & ND_NOMOREDATA) == 0) { 7897 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED); 7898 if (*++tl != 0) 7899 nd->nd_flag |= ND_NOMOREDATA; 7900 else { 7901 NFSM_DISSECT(tl, uint32_t *, 2 * 7902 NFSX_UNSIGNED); 7903 if (*++tl != 0) 7904 nd->nd_flag |= ND_NOMOREDATA; 7905 } 7906 } 7907 if ((nd->nd_flag & ND_NOMOREDATA) == 0) { 7908 /* Load the directory attributes. */ 7909 error = nfsm_loadattr(nd, dnap); 7910 NFSCL_DEBUG(4, "aft nfsm_loadattr err=%d\n", error); 7911 if (error != 0) 7912 goto nfsmout; 7913 *dattrflagp = 1; 7914 if (dp != NULL && *attrflagp != 0) { 7915 dp->nfsdl_change = nnap->na_filerev; 7916 dp->nfsdl_modtime = nnap->na_mtime; 7917 dp->nfsdl_flags |= NFSCLDL_MODTIMESET; 7918 } 7919 /* 7920 * We can now complete the Open state. 7921 */ 7922 nfhp = *nfhpp; 7923 if (dp != NULL) { 7924 dp->nfsdl_fhlen = nfhp->nfh_len; 7925 NFSBCOPY(nfhp->nfh_fh, dp->nfsdl_fh, 7926 nfhp->nfh_len); 7927 } 7928 /* 7929 * Get an Open structure that will be 7930 * attached to the OpenOwner, acquired already. 7931 */ 7932 error = nfscl_open(dvp, nfhp->nfh_fh, nfhp->nfh_len, 7933 (NFSV4OPEN_ACCESSWRITE | NFSV4OPEN_ACCESSREAD), 0, 7934 cred, p, NULL, &op, &newone, NULL, 0); 7935 if (error != 0) 7936 goto nfsmout; 7937 op->nfso_stateid = stateid; 7938 newnfs_copyincred(cred, &op->nfso_cred); 7939 7940 nfscl_openrelease(nmp, op, error, newone); 7941 *unlockedp = 1; 7942 7943 /* Now, handle the RestoreFH and LayoutGet. */ 7944 if (nd->nd_repstat == 0) { 7945 NFSM_DISSECT(tl, uint32_t *, 4 * NFSX_UNSIGNED); 7946 *laystatp = fxdr_unsigned(int, *(tl + 3)); 7947 if (*laystatp == 0) { 7948 error = nfsrv_parselayoutget(nmp, nd, 7949 stateidp, retonclosep, flhp); 7950 if (error != 0) 7951 *laystatp = error; 7952 } 7953 NFSCL_DEBUG(4, "aft nfsrv_parselayout err=%d\n", 7954 error); 7955 } else 7956 nd->nd_repstat = 0; 7957 } 7958 } 7959 if (nd->nd_repstat != 0 && error == 0) 7960 error = nd->nd_repstat; 7961 if (error == NFSERR_STALECLIENTID || error == NFSERR_BADSESSION) 7962 nfscl_initiate_recovery(owp->nfsow_clp); 7963 nfsmout: 7964 NFSCL_DEBUG(4, "eo nfsrpc_createlayout err=%d\n", error); 7965 if (error == 0) 7966 *dpp = dp; 7967 else 7968 free(dp, M_NFSCLDELEG); 7969 m_freem(nd->nd_mrep); 7970 return (error); 7971 } 7972 7973 /* 7974 * Similar to nfsrpc_getopenlayout(), except that it used for the Create case. 7975 */ 7976 static int 7977 nfsrpc_getcreatelayout(vnode_t dvp, char *name, int namelen, struct vattr *vap, 7978 nfsquad_t cverf, int fmode, struct nfsclowner *owp, struct nfscldeleg **dpp, 7979 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap, 7980 struct nfsvattr *nnap, struct nfsfh **nfhpp, int *attrflagp, 7981 int *dattrflagp, void *dstuff, int *unlockedp) 7982 { 7983 struct nfscllayout *lyp; 7984 struct nfsclflayouthead flh; 7985 struct nfsfh *nfhp; 7986 struct nfsclsession *tsep; 7987 struct nfsmount *nmp; 7988 nfsv4stateid_t stateid; 7989 int error, layoutlen, layouttype, retonclose, laystat; 7990 7991 error = 0; 7992 nmp = VFSTONFS(dvp->v_mount); 7993 if (NFSHASFLEXFILE(nmp)) 7994 layouttype = NFSLAYOUT_FLEXFILE; 7995 else 7996 layouttype = NFSLAYOUT_NFSV4_1_FILES; 7997 LIST_INIT(&flh); 7998 tsep = nfsmnt_mdssession(nmp); 7999 layoutlen = tsep->nfsess_maxcache - (NFSX_STATEID + 3 * NFSX_UNSIGNED); 8000 error = nfsrpc_createlayout(dvp, name, namelen, vap, cverf, fmode, 8001 owp, dpp, cred, p, dnap, nnap, nfhpp, attrflagp, dattrflagp, 8002 dstuff, unlockedp, &stateid, 1, layouttype, layoutlen, &retonclose, 8003 &flh, &laystat); 8004 NFSCL_DEBUG(4, "aft nfsrpc_createlayoutrpc laystat=%d err=%d\n", 8005 laystat, error); 8006 lyp = NULL; 8007 if (laystat == 0) { 8008 nfhp = *nfhpp; 8009 laystat = nfsrpc_layoutgetres(nmp, dvp, nfhp->nfh_fh, 8010 nfhp->nfh_len, &stateid, retonclose, NULL, &lyp, &flh, 8011 layouttype, laystat, NULL, cred, p); 8012 } else 8013 laystat = nfsrpc_layoutgetres(nmp, dvp, NULL, 0, &stateid, 8014 retonclose, NULL, &lyp, &flh, layouttype, laystat, NULL, 8015 cred, p); 8016 if (laystat == 0) 8017 nfscl_rellayout(lyp, 0); 8018 return (error); 8019 } 8020 8021 /* 8022 * Process the results of a layoutget() operation. 8023 */ 8024 static int 8025 nfsrpc_layoutgetres(struct nfsmount *nmp, vnode_t vp, uint8_t *newfhp, 8026 int newfhlen, nfsv4stateid_t *stateidp, int retonclose, uint32_t *notifybit, 8027 struct nfscllayout **lypp, struct nfsclflayouthead *flhp, int layouttype, 8028 int laystat, int *islockedp, struct ucred *cred, NFSPROC_T *p) 8029 { 8030 struct nfsclflayout *tflp; 8031 struct nfscldevinfo *dip; 8032 uint8_t *dev; 8033 int i, mirrorcnt; 8034 8035 if (laystat == NFSERR_UNKNLAYOUTTYPE) { 8036 NFSLOCKMNT(nmp); 8037 if (!NFSHASFLEXFILE(nmp)) { 8038 /* Switch to using Flex File Layout. */ 8039 nmp->nm_state |= NFSSTA_FLEXFILE; 8040 } else if (layouttype == NFSLAYOUT_FLEXFILE) { 8041 /* Disable pNFS. */ 8042 NFSCL_DEBUG(1, "disable PNFS\n"); 8043 nmp->nm_state &= ~(NFSSTA_PNFS | NFSSTA_FLEXFILE); 8044 } 8045 NFSUNLOCKMNT(nmp); 8046 } 8047 if (laystat == 0) { 8048 NFSCL_DEBUG(4, "nfsrpc_layoutgetres at FOREACH\n"); 8049 LIST_FOREACH(tflp, flhp, nfsfl_list) { 8050 if (layouttype == NFSLAYOUT_FLEXFILE) 8051 mirrorcnt = tflp->nfsfl_mirrorcnt; 8052 else 8053 mirrorcnt = 1; 8054 for (i = 0; i < mirrorcnt; i++) { 8055 laystat = nfscl_adddevinfo(nmp, NULL, i, tflp); 8056 NFSCL_DEBUG(4, "aft adddev=%d\n", laystat); 8057 if (laystat != 0) { 8058 if (layouttype == NFSLAYOUT_FLEXFILE) 8059 dev = tflp->nfsfl_ffm[i].dev; 8060 else 8061 dev = tflp->nfsfl_dev; 8062 laystat = nfsrpc_getdeviceinfo(nmp, dev, 8063 layouttype, notifybit, &dip, cred, 8064 p); 8065 NFSCL_DEBUG(4, "aft nfsrpc_gdi=%d\n", 8066 laystat); 8067 if (laystat != 0) 8068 goto out; 8069 laystat = nfscl_adddevinfo(nmp, dip, i, 8070 tflp); 8071 if (laystat != 0) 8072 printf("nfsrpc_layoutgetresout" 8073 ": cannot add\n"); 8074 } 8075 } 8076 } 8077 } 8078 out: 8079 if (laystat == 0) { 8080 /* 8081 * nfscl_layout() always returns with the nfsly_lock 8082 * set to a refcnt (shared lock). 8083 * Passing in dvp is sufficient, since it is only used to 8084 * get the fsid for the file system. 8085 */ 8086 laystat = nfscl_layout(nmp, vp, newfhp, newfhlen, stateidp, 8087 layouttype, retonclose, flhp, lypp, cred, p); 8088 NFSCL_DEBUG(4, "nfsrpc_layoutgetres: aft nfscl_layout=%d\n", 8089 laystat); 8090 if (laystat == 0 && islockedp != NULL) 8091 *islockedp = 1; 8092 } 8093 return (laystat); 8094 } 8095 8096 /* 8097 * nfs copy_file_range operation. 8098 */ 8099 int 8100 nfsrpc_copy_file_range(vnode_t invp, off_t *inoffp, vnode_t outvp, 8101 off_t *outoffp, size_t *lenp, unsigned int flags, int *inattrflagp, 8102 struct nfsvattr *innap, int *outattrflagp, struct nfsvattr *outnap, 8103 struct ucred *cred, bool consecutive, bool *must_commitp) 8104 { 8105 int commit, error, expireret = 0, retrycnt; 8106 u_int32_t clidrev = 0; 8107 struct nfsmount *nmp = VFSTONFS(invp->v_mount); 8108 struct nfsfh *innfhp = NULL, *outnfhp = NULL; 8109 nfsv4stateid_t instateid, outstateid; 8110 void *inlckp, *outlckp; 8111 8112 if (nmp->nm_clp != NULL) 8113 clidrev = nmp->nm_clp->nfsc_clientidrev; 8114 innfhp = VTONFS(invp)->n_fhp; 8115 outnfhp = VTONFS(outvp)->n_fhp; 8116 retrycnt = 0; 8117 do { 8118 /* Get both stateids. */ 8119 inlckp = NULL; 8120 nfscl_getstateid(invp, innfhp->nfh_fh, innfhp->nfh_len, 8121 NFSV4OPEN_ACCESSREAD, 0, NULL, curthread, &instateid, 8122 &inlckp); 8123 outlckp = NULL; 8124 nfscl_getstateid(outvp, outnfhp->nfh_fh, outnfhp->nfh_len, 8125 NFSV4OPEN_ACCESSWRITE, 0, NULL, curthread, &outstateid, 8126 &outlckp); 8127 8128 error = nfsrpc_copyrpc(invp, *inoffp, outvp, *outoffp, lenp, 8129 &instateid, &outstateid, innap, inattrflagp, outnap, 8130 outattrflagp, consecutive, &commit, cred, curthread); 8131 if (error == 0) { 8132 if (commit != NFSWRITE_FILESYNC) 8133 *must_commitp = true; 8134 *inoffp += *lenp; 8135 *outoffp += *lenp; 8136 } else if (error == NFSERR_STALESTATEID) 8137 nfscl_initiate_recovery(nmp->nm_clp); 8138 if (inlckp != NULL) 8139 nfscl_lockderef(inlckp); 8140 if (outlckp != NULL) 8141 nfscl_lockderef(outlckp); 8142 if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 8143 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 8144 error == NFSERR_OLDSTATEID || error == NFSERR_BADSESSION) { 8145 (void) nfs_catnap(PZERO, error, "nfs_cfr"); 8146 } else if ((error == NFSERR_EXPIRED || 8147 error == NFSERR_BADSTATEID) && clidrev != 0) { 8148 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, 8149 curthread); 8150 } 8151 retrycnt++; 8152 } while (error == NFSERR_GRACE || error == NFSERR_DELAY || 8153 error == NFSERR_STALESTATEID || error == NFSERR_BADSESSION || 8154 error == NFSERR_STALEDONTRECOVER || 8155 (error == NFSERR_OLDSTATEID && retrycnt < 20) || 8156 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) && 8157 expireret == 0 && clidrev != 0 && retrycnt < 4)); 8158 if (error != 0 && (retrycnt >= 4 || 8159 error == NFSERR_STALESTATEID || error == NFSERR_BADSESSION || 8160 error == NFSERR_STALEDONTRECOVER)) 8161 error = EIO; 8162 return (error); 8163 } 8164 8165 /* 8166 * The copy RPC. 8167 */ 8168 static int 8169 nfsrpc_copyrpc(vnode_t invp, off_t inoff, vnode_t outvp, off_t outoff, 8170 size_t *lenp, nfsv4stateid_t *instateidp, nfsv4stateid_t *outstateidp, 8171 struct nfsvattr *innap, int *inattrflagp, struct nfsvattr *outnap, 8172 int *outattrflagp, bool consecutive, int *commitp, struct ucred *cred, 8173 NFSPROC_T *p) 8174 { 8175 uint32_t *tl; 8176 int error; 8177 struct nfsrv_descript nfsd; 8178 struct nfsrv_descript *nd = &nfsd; 8179 struct nfsmount *nmp; 8180 nfsattrbit_t attrbits; 8181 uint64_t len; 8182 8183 nmp = VFSTONFS(outvp->v_mount); 8184 *inattrflagp = *outattrflagp = 0; 8185 *commitp = NFSWRITE_UNSTABLE; 8186 len = *lenp; 8187 *lenp = 0; 8188 if (len > nfs_maxcopyrange) 8189 len = nfs_maxcopyrange; 8190 NFSCL_REQSTART(nd, NFSPROC_COPY, invp); 8191 NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED); 8192 *tl = txdr_unsigned(NFSV4OP_GETATTR); 8193 NFSGETATTR_ATTRBIT(&attrbits); 8194 nfsrv_putattrbit(nd, &attrbits); 8195 NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED); 8196 *tl = txdr_unsigned(NFSV4OP_PUTFH); 8197 nfsm_fhtom(nd, VTONFS(outvp)->n_fhp->nfh_fh, 8198 VTONFS(outvp)->n_fhp->nfh_len, 0); 8199 NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED); 8200 *tl = txdr_unsigned(NFSV4OP_COPY); 8201 nfsm_stateidtom(nd, instateidp, NFSSTATEID_PUTSTATEID); 8202 nfsm_stateidtom(nd, outstateidp, NFSSTATEID_PUTSTATEID); 8203 NFSM_BUILD(tl, uint32_t *, 3 * NFSX_HYPER + 4 * NFSX_UNSIGNED); 8204 txdr_hyper(inoff, tl); tl += 2; 8205 txdr_hyper(outoff, tl); tl += 2; 8206 txdr_hyper(len, tl); tl += 2; 8207 if (consecutive) 8208 *tl++ = newnfs_true; 8209 else 8210 *tl++ = newnfs_false; 8211 *tl++ = newnfs_true; 8212 *tl++ = 0; 8213 *tl = txdr_unsigned(NFSV4OP_GETATTR); 8214 NFSWRITEGETATTR_ATTRBIT(&attrbits); 8215 nfsrv_putattrbit(nd, &attrbits); 8216 error = nfscl_request(nd, invp, p, cred, NULL); 8217 if (error != 0) 8218 return (error); 8219 if ((nd->nd_flag & ND_NOMOREDATA) == 0) { 8220 /* Get the input file's attributes. */ 8221 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED); 8222 if (*(tl + 1) == 0) { 8223 error = nfsm_loadattr(nd, innap); 8224 if (error != 0) 8225 goto nfsmout; 8226 *inattrflagp = 1; 8227 } else 8228 nd->nd_flag |= ND_NOMOREDATA; 8229 } 8230 /* Skip over return stat for PutFH. */ 8231 if ((nd->nd_flag & ND_NOMOREDATA) == 0) { 8232 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED); 8233 if (*++tl != 0) 8234 nd->nd_flag |= ND_NOMOREDATA; 8235 } 8236 /* Skip over return stat for Copy. */ 8237 if ((nd->nd_flag & ND_NOMOREDATA) == 0) 8238 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED); 8239 if (nd->nd_repstat == 0) { 8240 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 8241 if (*tl != 0) { 8242 /* There should be no callback ids. */ 8243 error = NFSERR_BADXDR; 8244 goto nfsmout; 8245 } 8246 NFSM_DISSECT(tl, uint32_t *, NFSX_HYPER + 3 * NFSX_UNSIGNED + 8247 NFSX_VERF); 8248 len = fxdr_hyper(tl); tl += 2; 8249 *commitp = fxdr_unsigned(int, *tl++); 8250 NFSLOCKMNT(nmp); 8251 if (!NFSHASWRITEVERF(nmp)) { 8252 NFSBCOPY(tl, nmp->nm_verf, NFSX_VERF); 8253 NFSSETWRITEVERF(nmp); 8254 } else if (NFSBCMP(tl, nmp->nm_verf, NFSX_VERF)) { 8255 NFSBCOPY(tl, nmp->nm_verf, NFSX_VERF); 8256 nd->nd_repstat = NFSERR_STALEWRITEVERF; 8257 } 8258 NFSUNLOCKMNT(nmp); 8259 tl += (NFSX_VERF / NFSX_UNSIGNED); 8260 if (nd->nd_repstat == 0 && *++tl != newnfs_true) 8261 /* Must be a synchronous copy. */ 8262 nd->nd_repstat = NFSERR_NOTSUPP; 8263 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED); 8264 error = nfsm_loadattr(nd, outnap); 8265 if (error == 0) 8266 *outattrflagp = NFS_LATTR_NOSHRINK; 8267 if (nd->nd_repstat == 0) 8268 *lenp = len; 8269 } else if (nd->nd_repstat == NFSERR_OFFLOADNOREQS) { 8270 /* 8271 * For the case where consecutive is not supported, but 8272 * synchronous is supported, we can try consecutive == false 8273 * by returning this error. Otherwise, return NFSERR_NOTSUPP, 8274 * since Copy cannot be done. 8275 */ 8276 if ((nd->nd_flag & ND_NOMOREDATA) == 0) { 8277 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED); 8278 if (!consecutive || *++tl == newnfs_false) 8279 nd->nd_repstat = NFSERR_NOTSUPP; 8280 } else 8281 nd->nd_repstat = NFSERR_BADXDR; 8282 } 8283 if (error == 0) 8284 error = nd->nd_repstat; 8285 nfsmout: 8286 m_freem(nd->nd_mrep); 8287 return (error); 8288 } 8289 8290 /* 8291 * Seek operation. 8292 */ 8293 int 8294 nfsrpc_seek(vnode_t vp, off_t *offp, bool *eofp, int content, 8295 struct ucred *cred, struct nfsvattr *nap, int *attrflagp) 8296 { 8297 int error, expireret = 0, retrycnt; 8298 u_int32_t clidrev = 0; 8299 struct nfsmount *nmp = VFSTONFS(vp->v_mount); 8300 struct nfsnode *np = VTONFS(vp); 8301 struct nfsfh *nfhp = NULL; 8302 nfsv4stateid_t stateid; 8303 void *lckp; 8304 8305 if (nmp->nm_clp != NULL) 8306 clidrev = nmp->nm_clp->nfsc_clientidrev; 8307 nfhp = np->n_fhp; 8308 retrycnt = 0; 8309 do { 8310 lckp = NULL; 8311 nfscl_getstateid(vp, nfhp->nfh_fh, nfhp->nfh_len, 8312 NFSV4OPEN_ACCESSREAD, 0, cred, curthread, &stateid, &lckp); 8313 error = nfsrpc_seekrpc(vp, offp, &stateid, eofp, content, 8314 nap, attrflagp, cred); 8315 if (error == NFSERR_STALESTATEID) 8316 nfscl_initiate_recovery(nmp->nm_clp); 8317 if (lckp != NULL) 8318 nfscl_lockderef(lckp); 8319 if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 8320 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 8321 error == NFSERR_OLDSTATEID || error == NFSERR_BADSESSION) { 8322 (void) nfs_catnap(PZERO, error, "nfs_seek"); 8323 } else if ((error == NFSERR_EXPIRED || 8324 error == NFSERR_BADSTATEID) && clidrev != 0) { 8325 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, 8326 curthread); 8327 } 8328 retrycnt++; 8329 } while (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 8330 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 8331 error == NFSERR_BADSESSION || 8332 (error == NFSERR_OLDSTATEID && retrycnt < 20) || 8333 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) && 8334 expireret == 0 && clidrev != 0 && retrycnt < 4) || 8335 (error == NFSERR_OPENMODE && retrycnt < 4)); 8336 if (error && retrycnt >= 4) 8337 error = EIO; 8338 return (error); 8339 } 8340 8341 /* 8342 * The seek RPC. 8343 */ 8344 static int 8345 nfsrpc_seekrpc(vnode_t vp, off_t *offp, nfsv4stateid_t *stateidp, bool *eofp, 8346 int content, struct nfsvattr *nap, int *attrflagp, struct ucred *cred) 8347 { 8348 uint32_t *tl; 8349 int error; 8350 struct nfsrv_descript nfsd; 8351 struct nfsrv_descript *nd = &nfsd; 8352 nfsattrbit_t attrbits; 8353 8354 *attrflagp = 0; 8355 NFSCL_REQSTART(nd, NFSPROC_SEEK, vp); 8356 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID); 8357 NFSM_BUILD(tl, uint32_t *, NFSX_HYPER + 2 * NFSX_UNSIGNED); 8358 txdr_hyper(*offp, tl); tl += 2; 8359 *tl++ = txdr_unsigned(content); 8360 *tl = txdr_unsigned(NFSV4OP_GETATTR); 8361 NFSGETATTR_ATTRBIT(&attrbits); 8362 nfsrv_putattrbit(nd, &attrbits); 8363 error = nfscl_request(nd, vp, curthread, cred, NULL); 8364 if (error != 0) 8365 return (error); 8366 if (nd->nd_repstat == 0) { 8367 NFSM_DISSECT(tl, uint32_t *, 3 * NFSX_UNSIGNED + NFSX_HYPER); 8368 if (*tl++ == newnfs_true) 8369 *eofp = true; 8370 else 8371 *eofp = false; 8372 *offp = fxdr_hyper(tl); 8373 /* Just skip over Getattr op status. */ 8374 error = nfsm_loadattr(nd, nap); 8375 if (error == 0) 8376 *attrflagp = 1; 8377 } 8378 error = nd->nd_repstat; 8379 nfsmout: 8380 m_freem(nd->nd_mrep); 8381 return (error); 8382 } 8383 8384 /* 8385 * The getextattr RPC. 8386 */ 8387 int 8388 nfsrpc_getextattr(vnode_t vp, const char *name, struct uio *uiop, ssize_t *lenp, 8389 struct nfsvattr *nap, int *attrflagp, struct ucred *cred, NFSPROC_T *p) 8390 { 8391 uint32_t *tl; 8392 int error; 8393 struct nfsrv_descript nfsd; 8394 struct nfsrv_descript *nd = &nfsd; 8395 nfsattrbit_t attrbits; 8396 uint32_t len, len2; 8397 8398 *attrflagp = 0; 8399 NFSCL_REQSTART(nd, NFSPROC_GETEXTATTR, vp); 8400 nfsm_strtom(nd, name, strlen(name)); 8401 NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED); 8402 *tl = txdr_unsigned(NFSV4OP_GETATTR); 8403 NFSGETATTR_ATTRBIT(&attrbits); 8404 nfsrv_putattrbit(nd, &attrbits); 8405 error = nfscl_request(nd, vp, p, cred, NULL); 8406 if (error != 0) 8407 return (error); 8408 if (nd->nd_repstat == 0) { 8409 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 8410 len = fxdr_unsigned(uint32_t, *tl); 8411 /* Sanity check lengths. */ 8412 if (uiop != NULL && len > 0 && len <= IOSIZE_MAX && 8413 uiop->uio_resid <= UINT32_MAX) { 8414 len2 = uiop->uio_resid; 8415 if (len2 >= len) 8416 error = nfsm_mbufuio(nd, uiop, len); 8417 else { 8418 error = nfsm_mbufuio(nd, uiop, len2); 8419 if (error == 0) { 8420 /* 8421 * nfsm_mbufuio() advances to a multiple 8422 * of 4, so round up len2 as well. Then 8423 * we need to advance over the rest of 8424 * the data, rounding up the remaining 8425 * length. 8426 */ 8427 len2 = NFSM_RNDUP(len2); 8428 len2 = NFSM_RNDUP(len - len2); 8429 if (len2 > 0) 8430 error = nfsm_advance(nd, len2, 8431 -1); 8432 } 8433 } 8434 } else if (uiop == NULL && len > 0) { 8435 /* Just wants the length and not the data. */ 8436 error = nfsm_advance(nd, NFSM_RNDUP(len), -1); 8437 } else if (len > 0) 8438 error = ENOATTR; 8439 if (error != 0) 8440 goto nfsmout; 8441 *lenp = len; 8442 /* Just skip over Getattr op status. */ 8443 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED); 8444 error = nfsm_loadattr(nd, nap); 8445 if (error == 0) 8446 *attrflagp = 1; 8447 } 8448 if (error == 0) 8449 error = nd->nd_repstat; 8450 nfsmout: 8451 m_freem(nd->nd_mrep); 8452 return (error); 8453 } 8454 8455 /* 8456 * The setextattr RPC. 8457 */ 8458 int 8459 nfsrpc_setextattr(vnode_t vp, const char *name, struct uio *uiop, 8460 struct nfsvattr *nap, int *attrflagp, struct ucred *cred, NFSPROC_T *p) 8461 { 8462 uint32_t *tl; 8463 int error; 8464 struct nfsrv_descript nfsd; 8465 struct nfsrv_descript *nd = &nfsd; 8466 nfsattrbit_t attrbits; 8467 8468 *attrflagp = 0; 8469 NFSCL_REQSTART(nd, NFSPROC_SETEXTATTR, vp); 8470 if (uiop->uio_resid > nd->nd_maxreq) { 8471 /* nd_maxreq is set by NFSCL_REQSTART(). */ 8472 m_freem(nd->nd_mreq); 8473 return (EINVAL); 8474 } 8475 NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED); 8476 *tl = txdr_unsigned(NFSV4SXATTR_EITHER); 8477 nfsm_strtom(nd, name, strlen(name)); 8478 NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED); 8479 *tl = txdr_unsigned(uiop->uio_resid); 8480 nfsm_uiombuf(nd, uiop, uiop->uio_resid); 8481 NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED); 8482 *tl = txdr_unsigned(NFSV4OP_GETATTR); 8483 NFSGETATTR_ATTRBIT(&attrbits); 8484 nfsrv_putattrbit(nd, &attrbits); 8485 error = nfscl_request(nd, vp, p, cred, NULL); 8486 if (error != 0) 8487 return (error); 8488 if (nd->nd_repstat == 0) { 8489 /* Just skip over the reply and Getattr op status. */ 8490 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_HYPER + 3 * 8491 NFSX_UNSIGNED); 8492 error = nfsm_loadattr(nd, nap); 8493 if (error == 0) 8494 *attrflagp = 1; 8495 } 8496 if (error == 0) 8497 error = nd->nd_repstat; 8498 nfsmout: 8499 m_freem(nd->nd_mrep); 8500 return (error); 8501 } 8502 8503 /* 8504 * The removeextattr RPC. 8505 */ 8506 int 8507 nfsrpc_rmextattr(vnode_t vp, const char *name, struct nfsvattr *nap, 8508 int *attrflagp, struct ucred *cred, NFSPROC_T *p) 8509 { 8510 uint32_t *tl; 8511 int error; 8512 struct nfsrv_descript nfsd; 8513 struct nfsrv_descript *nd = &nfsd; 8514 nfsattrbit_t attrbits; 8515 8516 *attrflagp = 0; 8517 NFSCL_REQSTART(nd, NFSPROC_RMEXTATTR, vp); 8518 nfsm_strtom(nd, name, strlen(name)); 8519 NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED); 8520 *tl = txdr_unsigned(NFSV4OP_GETATTR); 8521 NFSGETATTR_ATTRBIT(&attrbits); 8522 nfsrv_putattrbit(nd, &attrbits); 8523 error = nfscl_request(nd, vp, p, cred, NULL); 8524 if (error != 0) 8525 return (error); 8526 if (nd->nd_repstat == 0) { 8527 /* Just skip over the reply and Getattr op status. */ 8528 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_HYPER + 3 * 8529 NFSX_UNSIGNED); 8530 error = nfsm_loadattr(nd, nap); 8531 if (error == 0) 8532 *attrflagp = 1; 8533 } 8534 if (error == 0) 8535 error = nd->nd_repstat; 8536 nfsmout: 8537 m_freem(nd->nd_mrep); 8538 return (error); 8539 } 8540 8541 /* 8542 * The listextattr RPC. 8543 */ 8544 int 8545 nfsrpc_listextattr(vnode_t vp, uint64_t *cookiep, struct uio *uiop, 8546 size_t *lenp, bool *eofp, struct nfsvattr *nap, int *attrflagp, 8547 struct ucred *cred, NFSPROC_T *p) 8548 { 8549 uint32_t *tl; 8550 int cnt, error, i, len; 8551 struct nfsrv_descript nfsd; 8552 struct nfsrv_descript *nd = &nfsd; 8553 nfsattrbit_t attrbits; 8554 u_char c; 8555 8556 *attrflagp = 0; 8557 NFSCL_REQSTART(nd, NFSPROC_LISTEXTATTR, vp); 8558 NFSM_BUILD(tl, uint32_t *, NFSX_HYPER + 2 * NFSX_UNSIGNED); 8559 txdr_hyper(*cookiep, tl); tl += 2; 8560 *tl++ = txdr_unsigned(*lenp); 8561 *tl = txdr_unsigned(NFSV4OP_GETATTR); 8562 NFSGETATTR_ATTRBIT(&attrbits); 8563 nfsrv_putattrbit(nd, &attrbits); 8564 error = nfscl_request(nd, vp, p, cred, NULL); 8565 if (error != 0) 8566 return (error); 8567 *eofp = true; 8568 *lenp = 0; 8569 if (nd->nd_repstat == 0) { 8570 NFSM_DISSECT(tl, uint32_t *, NFSX_HYPER + NFSX_UNSIGNED); 8571 *cookiep = fxdr_hyper(tl); tl += 2; 8572 cnt = fxdr_unsigned(int, *tl); 8573 if (cnt < 0) { 8574 error = EBADRPC; 8575 goto nfsmout; 8576 } 8577 for (i = 0; i < cnt; i++) { 8578 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 8579 len = fxdr_unsigned(int, *tl); 8580 if (len <= 0 || len > EXTATTR_MAXNAMELEN) { 8581 error = EBADRPC; 8582 goto nfsmout; 8583 } 8584 if (uiop == NULL) 8585 error = nfsm_advance(nd, NFSM_RNDUP(len), -1); 8586 else if (uiop->uio_resid >= len + 1) { 8587 c = len; 8588 error = uiomove(&c, sizeof(c), uiop); 8589 if (error == 0) 8590 error = nfsm_mbufuio(nd, uiop, len); 8591 } else { 8592 error = nfsm_advance(nd, NFSM_RNDUP(len), -1); 8593 *eofp = false; 8594 } 8595 if (error != 0) 8596 goto nfsmout; 8597 *lenp += (len + 1); 8598 } 8599 /* Get the eof and skip over the Getattr op status. */ 8600 NFSM_DISSECT(tl, uint32_t *, 3 * NFSX_UNSIGNED); 8601 /* 8602 * *eofp is set false above, because it wasn't able to copy 8603 * all of the reply. 8604 */ 8605 if (*eofp && *tl == 0) 8606 *eofp = false; 8607 error = nfsm_loadattr(nd, nap); 8608 if (error == 0) 8609 *attrflagp = 1; 8610 } 8611 if (error == 0) 8612 error = nd->nd_repstat; 8613 nfsmout: 8614 m_freem(nd->nd_mrep); 8615 return (error); 8616 } 8617 8618