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 int nfsrpc_readds(vnode_t, struct uio *, nfsv4stateid_t *, int *, 162 struct nfsclds *, uint64_t, int, struct nfsfh *, int, int, int, 163 struct ucred *, NFSPROC_T *); 164 static int nfsrpc_writeds(vnode_t, struct uio *, int *, int *, 165 nfsv4stateid_t *, struct nfsclds *, uint64_t, int, 166 struct nfsfh *, int, int, int, int, struct ucred *, NFSPROC_T *); 167 static int nfsio_writedsmir(vnode_t, int *, int *, nfsv4stateid_t *, 168 struct nfsclds *, uint64_t, int, struct nfsfh *, struct mbuf *, int, int, 169 struct nfsclwritedsdorpc *, struct ucred *, NFSPROC_T *); 170 static int nfsrpc_writedsmir(vnode_t, int *, int *, nfsv4stateid_t *, 171 struct nfsclds *, uint64_t, int, struct nfsfh *, struct mbuf *, int, int, 172 struct ucred *, NFSPROC_T *); 173 static enum nfsclds_state nfscl_getsameserver(struct nfsmount *, 174 struct nfsclds *, struct nfsclds **, uint32_t *); 175 static int nfsio_commitds(vnode_t, uint64_t, int, struct nfsclds *, 176 struct nfsfh *, int, int, struct nfsclwritedsdorpc *, struct ucred *, 177 NFSPROC_T *); 178 static int nfsrpc_commitds(vnode_t, uint64_t, int, struct nfsclds *, 179 struct nfsfh *, int, int, struct ucred *, NFSPROC_T *); 180 #ifdef notyet 181 static int nfsio_adviseds(vnode_t, uint64_t, int, int, struct nfsclds *, 182 struct nfsfh *, int, int, struct nfsclwritedsdorpc *, struct ucred *, 183 NFSPROC_T *); 184 static int nfsrpc_adviseds(vnode_t, uint64_t, int, int, struct nfsclds *, 185 struct nfsfh *, int, int, struct ucred *, NFSPROC_T *); 186 #endif 187 static int nfsrpc_allocaterpc(vnode_t, off_t, off_t, nfsv4stateid_t *, 188 struct nfsvattr *, int *, struct ucred *, NFSPROC_T *, void *); 189 static void nfsrv_setuplayoutget(struct nfsrv_descript *, int, uint64_t, 190 uint64_t, uint64_t, nfsv4stateid_t *, int, int, int); 191 static int nfsrv_parseug(struct nfsrv_descript *, int, uid_t *, gid_t *, 192 NFSPROC_T *); 193 static int nfsrv_parselayoutget(struct nfsmount *, struct nfsrv_descript *, 194 nfsv4stateid_t *, int *, struct nfsclflayouthead *); 195 static int nfsrpc_getopenlayout(struct nfsmount *, vnode_t, u_int8_t *, 196 int, uint8_t *, int, uint32_t, struct nfsclopen *, uint8_t *, int, 197 struct nfscldeleg **, struct ucred *, NFSPROC_T *); 198 static int nfsrpc_getcreatelayout(vnode_t, char *, int, struct vattr *, 199 nfsquad_t, int, struct nfsclowner *, struct nfscldeleg **, 200 struct ucred *, NFSPROC_T *, struct nfsvattr *, struct nfsvattr *, 201 struct nfsfh **, int *, int *, void *, int *); 202 static int nfsrpc_openlayoutrpc(struct nfsmount *, vnode_t, u_int8_t *, 203 int, uint8_t *, int, uint32_t, struct nfsclopen *, uint8_t *, int, 204 struct nfscldeleg **, nfsv4stateid_t *, int, int, int, int *, 205 struct nfsclflayouthead *, int *, struct ucred *, NFSPROC_T *); 206 static int nfsrpc_createlayout(vnode_t, char *, int, struct vattr *, 207 nfsquad_t, int, struct nfsclowner *, struct nfscldeleg **, 208 struct ucred *, NFSPROC_T *, struct nfsvattr *, struct nfsvattr *, 209 struct nfsfh **, int *, int *, void *, int *, nfsv4stateid_t *, 210 int, int, int, int *, struct nfsclflayouthead *, int *); 211 static int nfsrpc_layoutget(struct nfsmount *, uint8_t *, int, int, uint64_t, 212 uint64_t, uint64_t, int, int, nfsv4stateid_t *, int *, 213 struct nfsclflayouthead *, struct ucred *, NFSPROC_T *, void *); 214 static int nfsrpc_layoutgetres(struct nfsmount *, vnode_t, uint8_t *, 215 int, nfsv4stateid_t *, int, uint32_t *, struct nfscllayout **, 216 struct nfsclflayouthead *, int, int, int *, struct ucred *, NFSPROC_T *); 217 static int nfsrpc_copyrpc(vnode_t, off_t, vnode_t, off_t, size_t *, 218 nfsv4stateid_t *, nfsv4stateid_t *, struct nfsvattr *, int *, 219 struct nfsvattr *, int *, bool, int *, struct ucred *, NFSPROC_T *); 220 static int nfsrpc_seekrpc(vnode_t, off_t *, nfsv4stateid_t *, bool *, 221 int, struct nfsvattr *, int *, struct ucred *); 222 static struct mbuf *nfsm_split(struct mbuf *, uint64_t); 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 NFSM_BUILD(tl, u_int32_t *, 5 * NFSX_UNSIGNED); 504 *tl++ = txdr_unsigned(op->nfso_own->nfsow_seqid); 505 *tl++ = txdr_unsigned(mode & NFSV4OPEN_ACCESSBOTH); 506 *tl++ = txdr_unsigned((mode >> NFSLCK_SHIFT) & NFSV4OPEN_DENYBOTH); 507 tsep = nfsmnt_mdssession(nmp); 508 *tl++ = tsep->nfsess_clientid.lval[0]; 509 *tl = tsep->nfsess_clientid.lval[1]; 510 (void) nfsm_strtom(nd, op->nfso_own->nfsow_owner, NFSV4CL_LOCKNAMELEN); 511 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 512 *tl++ = txdr_unsigned(NFSV4OPEN_NOCREATE); 513 if (reclaim) { 514 *tl = txdr_unsigned(NFSV4OPEN_CLAIMPREVIOUS); 515 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 516 *tl = txdr_unsigned(delegtype); 517 } else { 518 if (dp != NULL) { 519 *tl = txdr_unsigned(NFSV4OPEN_CLAIMDELEGATECUR); 520 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID); 521 if (NFSHASNFSV4N(nmp)) 522 *tl++ = 0; 523 else 524 *tl++ = dp->nfsdl_stateid.seqid; 525 *tl++ = dp->nfsdl_stateid.other[0]; 526 *tl++ = dp->nfsdl_stateid.other[1]; 527 *tl = dp->nfsdl_stateid.other[2]; 528 } else { 529 *tl = txdr_unsigned(NFSV4OPEN_CLAIMNULL); 530 } 531 (void) nfsm_strtom(nd, name, namelen); 532 } 533 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 534 *tl = txdr_unsigned(NFSV4OP_GETATTR); 535 NFSZERO_ATTRBIT(&attrbits); 536 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_CHANGE); 537 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_TIMEMODIFY); 538 (void) nfsrv_putattrbit(nd, &attrbits); 539 if (syscred) 540 nd->nd_flag |= ND_USEGSSNAME; 541 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, vp, p, cred, 542 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 543 if (error) 544 return (error); 545 NFSCL_INCRSEQID(op->nfso_own->nfsow_seqid, nd); 546 if (!nd->nd_repstat) { 547 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID + 548 6 * NFSX_UNSIGNED); 549 op->nfso_stateid.seqid = *tl++; 550 op->nfso_stateid.other[0] = *tl++; 551 op->nfso_stateid.other[1] = *tl++; 552 op->nfso_stateid.other[2] = *tl; 553 rflags = fxdr_unsigned(u_int32_t, *(tl + 6)); 554 error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL); 555 if (error) 556 goto nfsmout; 557 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 558 deleg = fxdr_unsigned(u_int32_t, *tl); 559 if (deleg == NFSV4OPEN_DELEGATEREAD || 560 deleg == NFSV4OPEN_DELEGATEWRITE) { 561 if (!(op->nfso_own->nfsow_clp->nfsc_flags & 562 NFSCLFLAGS_FIRSTDELEG)) 563 op->nfso_own->nfsow_clp->nfsc_flags |= 564 (NFSCLFLAGS_FIRSTDELEG | NFSCLFLAGS_GOTDELEG); 565 ndp = malloc( 566 sizeof (struct nfscldeleg) + newfhlen, 567 M_NFSCLDELEG, M_WAITOK); 568 LIST_INIT(&ndp->nfsdl_owner); 569 LIST_INIT(&ndp->nfsdl_lock); 570 ndp->nfsdl_clp = op->nfso_own->nfsow_clp; 571 ndp->nfsdl_fhlen = newfhlen; 572 NFSBCOPY(newfhp, ndp->nfsdl_fh, newfhlen); 573 newnfs_copyincred(cred, &ndp->nfsdl_cred); 574 nfscl_lockinit(&ndp->nfsdl_rwlock); 575 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID + 576 NFSX_UNSIGNED); 577 ndp->nfsdl_stateid.seqid = *tl++; 578 ndp->nfsdl_stateid.other[0] = *tl++; 579 ndp->nfsdl_stateid.other[1] = *tl++; 580 ndp->nfsdl_stateid.other[2] = *tl++; 581 ret = fxdr_unsigned(int, *tl); 582 if (deleg == NFSV4OPEN_DELEGATEWRITE) { 583 ndp->nfsdl_flags = NFSCLDL_WRITE; 584 /* 585 * Indicates how much the file can grow. 586 */ 587 NFSM_DISSECT(tl, u_int32_t *, 588 3 * NFSX_UNSIGNED); 589 limitby = fxdr_unsigned(int, *tl++); 590 switch (limitby) { 591 case NFSV4OPEN_LIMITSIZE: 592 ndp->nfsdl_sizelimit = fxdr_hyper(tl); 593 break; 594 case NFSV4OPEN_LIMITBLOCKS: 595 ndp->nfsdl_sizelimit = 596 fxdr_unsigned(u_int64_t, *tl++); 597 ndp->nfsdl_sizelimit *= 598 fxdr_unsigned(u_int64_t, *tl); 599 break; 600 default: 601 error = NFSERR_BADXDR; 602 goto nfsmout; 603 } 604 } else { 605 ndp->nfsdl_flags = NFSCLDL_READ; 606 } 607 if (ret) 608 ndp->nfsdl_flags |= NFSCLDL_RECALL; 609 error = nfsrv_dissectace(nd, &ndp->nfsdl_ace, &ret, 610 &acesize, p); 611 if (error) 612 goto nfsmout; 613 } else if (deleg != NFSV4OPEN_DELEGATENONE) { 614 error = NFSERR_BADXDR; 615 goto nfsmout; 616 } 617 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 618 error = nfsv4_loadattr(nd, NULL, &nfsva, NULL, 619 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0, 620 NULL, NULL, NULL, p, cred); 621 if (error) 622 goto nfsmout; 623 if (ndp != NULL) { 624 ndp->nfsdl_change = nfsva.na_filerev; 625 ndp->nfsdl_modtime = nfsva.na_mtime; 626 ndp->nfsdl_flags |= NFSCLDL_MODTIMESET; 627 } 628 if (!reclaim && (rflags & NFSV4OPEN_RESULTCONFIRM)) { 629 do { 630 ret = nfsrpc_openconfirm(vp, newfhp, newfhlen, op, 631 cred, p); 632 if (ret == NFSERR_DELAY) 633 (void) nfs_catnap(PZERO, ret, "nfs_open"); 634 } while (ret == NFSERR_DELAY); 635 error = ret; 636 } 637 if ((rflags & NFSV4OPEN_LOCKTYPEPOSIX) || 638 nfscl_assumeposixlocks) 639 op->nfso_posixlock = 1; 640 else 641 op->nfso_posixlock = 0; 642 643 /* 644 * If the server is handing out delegations, but we didn't 645 * get one because an OpenConfirm was required, try the 646 * Open again, to get a delegation. This is a harmless no-op, 647 * from a server's point of view. 648 */ 649 if (!reclaim && (rflags & NFSV4OPEN_RESULTCONFIRM) && 650 (op->nfso_own->nfsow_clp->nfsc_flags & NFSCLFLAGS_GOTDELEG) 651 && !error && dp == NULL && ndp == NULL && !recursed) { 652 do { 653 ret = nfsrpc_openrpc(nmp, vp, nfhp, fhlen, newfhp, 654 newfhlen, mode, op, name, namelen, &ndp, 0, 0x0, 655 cred, p, syscred, 1); 656 if (ret == NFSERR_DELAY) 657 (void) nfs_catnap(PZERO, ret, "nfs_open2"); 658 } while (ret == NFSERR_DELAY); 659 if (ret) { 660 if (ndp != NULL) { 661 free(ndp, M_NFSCLDELEG); 662 ndp = NULL; 663 } 664 if (ret == NFSERR_STALECLIENTID || 665 ret == NFSERR_STALEDONTRECOVER || 666 ret == NFSERR_BADSESSION) 667 error = ret; 668 } 669 } 670 } 671 if (nd->nd_repstat != 0 && error == 0) 672 error = nd->nd_repstat; 673 if (error == NFSERR_STALECLIENTID) 674 nfscl_initiate_recovery(op->nfso_own->nfsow_clp); 675 nfsmout: 676 if (!error) 677 *dpp = ndp; 678 else if (ndp != NULL) 679 free(ndp, M_NFSCLDELEG); 680 m_freem(nd->nd_mrep); 681 return (error); 682 } 683 684 /* 685 * open downgrade rpc 686 */ 687 int 688 nfsrpc_opendowngrade(vnode_t vp, u_int32_t mode, struct nfsclopen *op, 689 struct ucred *cred, NFSPROC_T *p) 690 { 691 u_int32_t *tl; 692 struct nfsrv_descript nfsd, *nd = &nfsd; 693 int error; 694 695 NFSCL_REQSTART(nd, NFSPROC_OPENDOWNGRADE, vp); 696 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID + 3 * NFSX_UNSIGNED); 697 if (NFSHASNFSV4N(VFSTONFS(vp->v_mount))) 698 *tl++ = 0; 699 else 700 *tl++ = op->nfso_stateid.seqid; 701 *tl++ = op->nfso_stateid.other[0]; 702 *tl++ = op->nfso_stateid.other[1]; 703 *tl++ = op->nfso_stateid.other[2]; 704 *tl++ = txdr_unsigned(op->nfso_own->nfsow_seqid); 705 *tl++ = txdr_unsigned(mode & NFSV4OPEN_ACCESSBOTH); 706 *tl = txdr_unsigned((mode >> NFSLCK_SHIFT) & NFSV4OPEN_DENYBOTH); 707 error = nfscl_request(nd, vp, p, cred, NULL); 708 if (error) 709 return (error); 710 NFSCL_INCRSEQID(op->nfso_own->nfsow_seqid, nd); 711 if (!nd->nd_repstat) { 712 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID); 713 op->nfso_stateid.seqid = *tl++; 714 op->nfso_stateid.other[0] = *tl++; 715 op->nfso_stateid.other[1] = *tl++; 716 op->nfso_stateid.other[2] = *tl; 717 } 718 if (nd->nd_repstat && error == 0) 719 error = nd->nd_repstat; 720 if (error == NFSERR_STALESTATEID) 721 nfscl_initiate_recovery(op->nfso_own->nfsow_clp); 722 nfsmout: 723 m_freem(nd->nd_mrep); 724 return (error); 725 } 726 727 /* 728 * V4 Close operation. 729 */ 730 int 731 nfsrpc_close(vnode_t vp, int doclose, NFSPROC_T *p) 732 { 733 struct nfsclclient *clp; 734 int error; 735 736 if (vnode_vtype(vp) != VREG) 737 return (0); 738 if (doclose) 739 error = nfscl_doclose(vp, &clp, p); 740 else 741 error = nfscl_getclose(vp, &clp); 742 if (error) 743 return (error); 744 745 nfscl_clientrelease(clp); 746 return (0); 747 } 748 749 /* 750 * Close the open. 751 */ 752 void 753 nfsrpc_doclose(struct nfsmount *nmp, struct nfsclopen *op, NFSPROC_T *p) 754 { 755 struct nfsrv_descript nfsd, *nd = &nfsd; 756 struct nfscllockowner *lp, *nlp; 757 struct nfscllock *lop, *nlop; 758 struct ucred *tcred; 759 u_int64_t off = 0, len = 0; 760 u_int32_t type = NFSV4LOCKT_READ; 761 int error, do_unlock, trycnt; 762 763 tcred = newnfs_getcred(); 764 newnfs_copycred(&op->nfso_cred, tcred); 765 /* 766 * (Theoretically this could be done in the same 767 * compound as the close, but having multiple 768 * sequenced Ops in the same compound might be 769 * too scary for some servers.) 770 */ 771 if (op->nfso_posixlock) { 772 off = 0; 773 len = NFS64BITSSET; 774 type = NFSV4LOCKT_READ; 775 } 776 777 /* 778 * Since this function is only called from VOP_INACTIVE(), no 779 * other thread will be manipulating this Open. As such, the 780 * lock lists are not being changed by other threads, so it should 781 * be safe to do this without locking. 782 */ 783 LIST_FOREACH(lp, &op->nfso_lock, nfsl_list) { 784 do_unlock = 1; 785 LIST_FOREACH_SAFE(lop, &lp->nfsl_lock, nfslo_list, nlop) { 786 if (op->nfso_posixlock == 0) { 787 off = lop->nfslo_first; 788 len = lop->nfslo_end - lop->nfslo_first; 789 if (lop->nfslo_type == F_WRLCK) 790 type = NFSV4LOCKT_WRITE; 791 else 792 type = NFSV4LOCKT_READ; 793 } 794 if (do_unlock) { 795 trycnt = 0; 796 do { 797 error = nfsrpc_locku(nd, nmp, lp, off, 798 len, type, tcred, p, 0); 799 if ((nd->nd_repstat == NFSERR_GRACE || 800 nd->nd_repstat == NFSERR_DELAY) && 801 error == 0) 802 (void) nfs_catnap(PZERO, 803 (int)nd->nd_repstat, 804 "nfs_close"); 805 } while ((nd->nd_repstat == NFSERR_GRACE || 806 nd->nd_repstat == NFSERR_DELAY) && 807 error == 0 && trycnt++ < 5); 808 if (op->nfso_posixlock) 809 do_unlock = 0; 810 } 811 nfscl_freelock(lop, 0); 812 } 813 /* 814 * Do a ReleaseLockOwner. 815 * The lock owner name nfsl_owner may be used by other opens for 816 * other files but the lock_owner4 name that nfsrpc_rellockown() 817 * puts on the wire has the file handle for this file appended 818 * to it, so it can be done now. 819 */ 820 (void)nfsrpc_rellockown(nmp, lp, lp->nfsl_open->nfso_fh, 821 lp->nfsl_open->nfso_fhlen, tcred, p); 822 } 823 824 /* 825 * There could be other Opens for different files on the same 826 * OpenOwner, so locking is required. 827 */ 828 NFSLOCKCLSTATE(); 829 nfscl_lockexcl(&op->nfso_own->nfsow_rwlock, NFSCLSTATEMUTEXPTR); 830 NFSUNLOCKCLSTATE(); 831 do { 832 error = nfscl_tryclose(op, tcred, nmp, p); 833 if (error == NFSERR_GRACE) 834 (void) nfs_catnap(PZERO, error, "nfs_close"); 835 } while (error == NFSERR_GRACE); 836 NFSLOCKCLSTATE(); 837 nfscl_lockunlock(&op->nfso_own->nfsow_rwlock); 838 839 LIST_FOREACH_SAFE(lp, &op->nfso_lock, nfsl_list, nlp) 840 nfscl_freelockowner(lp, 0); 841 nfscl_freeopen(op, 0); 842 NFSUNLOCKCLSTATE(); 843 NFSFREECRED(tcred); 844 } 845 846 /* 847 * The actual Close RPC. 848 */ 849 int 850 nfsrpc_closerpc(struct nfsrv_descript *nd, struct nfsmount *nmp, 851 struct nfsclopen *op, struct ucred *cred, NFSPROC_T *p, 852 int syscred) 853 { 854 u_int32_t *tl; 855 int error; 856 857 nfscl_reqstart(nd, NFSPROC_CLOSE, nmp, op->nfso_fh, 858 op->nfso_fhlen, NULL, NULL, 0, 0); 859 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED + NFSX_STATEID); 860 *tl++ = txdr_unsigned(op->nfso_own->nfsow_seqid); 861 if (NFSHASNFSV4N(nmp)) 862 *tl++ = 0; 863 else 864 *tl++ = op->nfso_stateid.seqid; 865 *tl++ = op->nfso_stateid.other[0]; 866 *tl++ = op->nfso_stateid.other[1]; 867 *tl = op->nfso_stateid.other[2]; 868 if (syscred) 869 nd->nd_flag |= ND_USEGSSNAME; 870 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 871 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 872 if (error) 873 return (error); 874 NFSCL_INCRSEQID(op->nfso_own->nfsow_seqid, nd); 875 if (nd->nd_repstat == 0) 876 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID); 877 error = nd->nd_repstat; 878 if (error == NFSERR_STALESTATEID) 879 nfscl_initiate_recovery(op->nfso_own->nfsow_clp); 880 nfsmout: 881 m_freem(nd->nd_mrep); 882 return (error); 883 } 884 885 /* 886 * V4 Open Confirm RPC. 887 */ 888 int 889 nfsrpc_openconfirm(vnode_t vp, u_int8_t *nfhp, int fhlen, 890 struct nfsclopen *op, struct ucred *cred, NFSPROC_T *p) 891 { 892 u_int32_t *tl; 893 struct nfsrv_descript nfsd, *nd = &nfsd; 894 struct nfsmount *nmp; 895 int error; 896 897 nmp = VFSTONFS(vp->v_mount); 898 if (NFSHASNFSV4N(nmp)) 899 return (0); /* No confirmation for NFSv4.1. */ 900 nfscl_reqstart(nd, NFSPROC_OPENCONFIRM, nmp, nfhp, fhlen, NULL, NULL, 901 0, 0); 902 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED + NFSX_STATEID); 903 *tl++ = op->nfso_stateid.seqid; 904 *tl++ = op->nfso_stateid.other[0]; 905 *tl++ = op->nfso_stateid.other[1]; 906 *tl++ = op->nfso_stateid.other[2]; 907 *tl = txdr_unsigned(op->nfso_own->nfsow_seqid); 908 error = nfscl_request(nd, vp, p, cred, NULL); 909 if (error) 910 return (error); 911 NFSCL_INCRSEQID(op->nfso_own->nfsow_seqid, nd); 912 if (!nd->nd_repstat) { 913 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID); 914 op->nfso_stateid.seqid = *tl++; 915 op->nfso_stateid.other[0] = *tl++; 916 op->nfso_stateid.other[1] = *tl++; 917 op->nfso_stateid.other[2] = *tl; 918 } 919 error = nd->nd_repstat; 920 if (error == NFSERR_STALESTATEID) 921 nfscl_initiate_recovery(op->nfso_own->nfsow_clp); 922 nfsmout: 923 m_freem(nd->nd_mrep); 924 return (error); 925 } 926 927 /* 928 * Do the setclientid and setclientid confirm RPCs. Called from nfs_statfs() 929 * when a mount has just occurred and when the server replies NFSERR_EXPIRED. 930 */ 931 int 932 nfsrpc_setclient(struct nfsmount *nmp, struct nfsclclient *clp, int reclaim, 933 bool *retokp, struct ucred *cred, NFSPROC_T *p) 934 { 935 u_int32_t *tl; 936 struct nfsrv_descript nfsd; 937 struct nfsrv_descript *nd = &nfsd; 938 nfsattrbit_t attrbits; 939 u_int8_t *cp = NULL, *cp2, addr[INET6_ADDRSTRLEN + 9]; 940 u_short port; 941 int error, isinet6 = 0, callblen; 942 nfsquad_t confirm; 943 u_int32_t lease; 944 static u_int32_t rev = 0; 945 struct nfsclds *dsp, *odsp; 946 struct in6_addr a6; 947 struct nfsclsession *tsep; 948 949 if (nfsboottime.tv_sec == 0) 950 NFSSETBOOTTIME(nfsboottime); 951 if (NFSHASNFSV4N(nmp)) { 952 error = NFSERR_BADSESSION; 953 odsp = dsp = NULL; 954 if (retokp != NULL) { 955 NFSLOCKMNT(nmp); 956 odsp = TAILQ_FIRST(&nmp->nm_sess); 957 NFSUNLOCKMNT(nmp); 958 } 959 if (odsp != NULL) { 960 /* 961 * When a session already exists, first try a 962 * CreateSession with the extant ClientID. 963 */ 964 dsp = malloc(sizeof(struct nfsclds) + 965 odsp->nfsclds_servownlen + 1, M_NFSCLDS, 966 M_WAITOK | M_ZERO); 967 dsp->nfsclds_expire = NFSD_MONOSEC + clp->nfsc_renew; 968 dsp->nfsclds_servownlen = odsp->nfsclds_servownlen; 969 dsp->nfsclds_sess.nfsess_clientid = 970 odsp->nfsclds_sess.nfsess_clientid; 971 dsp->nfsclds_sess.nfsess_sequenceid = 972 odsp->nfsclds_sess.nfsess_sequenceid; 973 dsp->nfsclds_flags = odsp->nfsclds_flags; 974 if (dsp->nfsclds_servownlen > 0) 975 memcpy(dsp->nfsclds_serverown, 976 odsp->nfsclds_serverown, 977 dsp->nfsclds_servownlen + 1); 978 mtx_init(&dsp->nfsclds_mtx, "nfsds", NULL, MTX_DEF); 979 mtx_init(&dsp->nfsclds_sess.nfsess_mtx, "nfssession", 980 NULL, MTX_DEF); 981 nfscl_initsessionslots(&dsp->nfsclds_sess); 982 error = nfsrpc_createsession(nmp, &dsp->nfsclds_sess, 983 &nmp->nm_sockreq, NULL, 984 dsp->nfsclds_sess.nfsess_sequenceid, 1, cred, p); 985 NFSCL_DEBUG(1, "create session for extant " 986 "ClientID=%d\n", error); 987 if (error != 0) { 988 nfscl_freenfsclds(dsp); 989 dsp = NULL; 990 /* 991 * If *retokp is true, return any error other 992 * than NFSERR_STALECLIENTID, 993 * NFSERR_BADSESSION or NFSERR_STALEDONTRECOVER 994 * so that nfscl_recover() will not loop. 995 */ 996 if (*retokp) 997 return (NFSERR_IO); 998 } else 999 *retokp = true; 1000 } else if (retokp != NULL && *retokp) 1001 return (NFSERR_IO); 1002 if (error != 0) { 1003 /* 1004 * Either there was no previous session or the 1005 * CreateSession attempt failed, so... 1006 * do an ExchangeID followed by the CreateSession. 1007 */ 1008 clp->nfsc_rev = rev++; 1009 error = nfsrpc_exchangeid(nmp, clp, &nmp->nm_sockreq, 0, 1010 NFSV4EXCH_USEPNFSMDS | NFSV4EXCH_USENONPNFS, &dsp, 1011 cred, p); 1012 NFSCL_DEBUG(1, "aft exch=%d\n", error); 1013 if (error == 0) 1014 error = nfsrpc_createsession(nmp, 1015 &dsp->nfsclds_sess, &nmp->nm_sockreq, NULL, 1016 dsp->nfsclds_sess.nfsess_sequenceid, 1, 1017 cred, p); 1018 NFSCL_DEBUG(1, "aft createsess=%d\n", error); 1019 } 1020 if (error == 0) { 1021 NFSLOCKMNT(nmp); 1022 /* 1023 * The old sessions cannot be safely free'd 1024 * here, since they may still be used by 1025 * in-progress RPCs. 1026 */ 1027 tsep = NULL; 1028 if (TAILQ_FIRST(&nmp->nm_sess) != NULL) 1029 tsep = NFSMNT_MDSSESSION(nmp); 1030 TAILQ_INSERT_HEAD(&nmp->nm_sess, dsp, 1031 nfsclds_list); 1032 /* 1033 * Wake up RPCs waiting for a slot on the 1034 * old session. These will then fail with 1035 * NFSERR_BADSESSION and be retried with the 1036 * new session by nfsv4_setsequence(). 1037 * Also wakeup() processes waiting for the 1038 * new session. 1039 */ 1040 if (tsep != NULL) 1041 wakeup(&tsep->nfsess_slots); 1042 wakeup(&nmp->nm_sess); 1043 NFSUNLOCKMNT(nmp); 1044 } else if (dsp != NULL) 1045 nfscl_freenfsclds(dsp); 1046 if (error == 0 && reclaim == 0) { 1047 error = nfsrpc_reclaimcomplete(nmp, cred, p); 1048 NFSCL_DEBUG(1, "aft reclaimcomp=%d\n", error); 1049 if (error == NFSERR_COMPLETEALREADY || 1050 error == NFSERR_NOTSUPP) 1051 /* Ignore this error. */ 1052 error = 0; 1053 } 1054 return (error); 1055 } else if (retokp != NULL && *retokp) 1056 return (NFSERR_IO); 1057 clp->nfsc_rev = rev++; 1058 1059 /* 1060 * Allocate a single session structure for NFSv4.0, because some of 1061 * the fields are used by NFSv4.0 although it doesn't do a session. 1062 */ 1063 dsp = malloc(sizeof(struct nfsclds), M_NFSCLDS, M_WAITOK | M_ZERO); 1064 mtx_init(&dsp->nfsclds_mtx, "nfsds", NULL, MTX_DEF); 1065 mtx_init(&dsp->nfsclds_sess.nfsess_mtx, "nfssession", NULL, MTX_DEF); 1066 NFSLOCKMNT(nmp); 1067 TAILQ_INSERT_HEAD(&nmp->nm_sess, dsp, nfsclds_list); 1068 tsep = NFSMNT_MDSSESSION(nmp); 1069 NFSUNLOCKMNT(nmp); 1070 1071 nfscl_reqstart(nd, NFSPROC_SETCLIENTID, nmp, NULL, 0, NULL, NULL, 0, 0); 1072 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1073 *tl++ = txdr_unsigned(nfsboottime.tv_sec); 1074 *tl = txdr_unsigned(clp->nfsc_rev); 1075 (void) nfsm_strtom(nd, clp->nfsc_id, clp->nfsc_idlen); 1076 1077 /* 1078 * set up the callback address 1079 */ 1080 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1081 *tl = txdr_unsigned(NFS_CALLBCKPROG); 1082 callblen = strlen(nfsv4_callbackaddr); 1083 if (callblen == 0) 1084 cp = nfscl_getmyip(nmp, &a6, &isinet6); 1085 if (nfscl_enablecallb && nfs_numnfscbd > 0 && 1086 (callblen > 0 || cp != NULL)) { 1087 port = htons(nfsv4_cbport); 1088 cp2 = (u_int8_t *)&port; 1089 #ifdef INET6 1090 if ((callblen > 0 && 1091 strchr(nfsv4_callbackaddr, ':')) || isinet6) { 1092 char ip6buf[INET6_ADDRSTRLEN], *ip6add; 1093 1094 (void) nfsm_strtom(nd, "tcp6", 4); 1095 if (callblen == 0) { 1096 ip6_sprintf(ip6buf, (struct in6_addr *)cp); 1097 ip6add = ip6buf; 1098 } else { 1099 ip6add = nfsv4_callbackaddr; 1100 } 1101 snprintf(addr, INET6_ADDRSTRLEN + 9, "%s.%d.%d", 1102 ip6add, cp2[0], cp2[1]); 1103 } else 1104 #endif 1105 { 1106 (void) nfsm_strtom(nd, "tcp", 3); 1107 if (callblen == 0) 1108 snprintf(addr, INET6_ADDRSTRLEN + 9, 1109 "%d.%d.%d.%d.%d.%d", cp[0], cp[1], 1110 cp[2], cp[3], cp2[0], cp2[1]); 1111 else 1112 snprintf(addr, INET6_ADDRSTRLEN + 9, 1113 "%s.%d.%d", nfsv4_callbackaddr, 1114 cp2[0], cp2[1]); 1115 } 1116 (void) nfsm_strtom(nd, addr, strlen(addr)); 1117 } else { 1118 (void) nfsm_strtom(nd, "tcp", 3); 1119 (void) nfsm_strtom(nd, "0.0.0.0.0.0", 11); 1120 } 1121 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1122 *tl = txdr_unsigned(clp->nfsc_cbident); 1123 nd->nd_flag |= ND_USEGSSNAME; 1124 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 1125 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 1126 if (error) 1127 return (error); 1128 if (nd->nd_repstat == 0) { 1129 NFSM_DISSECT(tl, u_int32_t *, 4 * NFSX_UNSIGNED); 1130 tsep->nfsess_clientid.lval[0] = *tl++; 1131 tsep->nfsess_clientid.lval[1] = *tl++; 1132 confirm.lval[0] = *tl++; 1133 confirm.lval[1] = *tl; 1134 m_freem(nd->nd_mrep); 1135 nd->nd_mrep = NULL; 1136 1137 /* 1138 * and confirm it. 1139 */ 1140 nfscl_reqstart(nd, NFSPROC_SETCLIENTIDCFRM, nmp, NULL, 0, NULL, 1141 NULL, 0, 0); 1142 NFSM_BUILD(tl, u_int32_t *, 4 * NFSX_UNSIGNED); 1143 *tl++ = tsep->nfsess_clientid.lval[0]; 1144 *tl++ = tsep->nfsess_clientid.lval[1]; 1145 *tl++ = confirm.lval[0]; 1146 *tl = confirm.lval[1]; 1147 nd->nd_flag |= ND_USEGSSNAME; 1148 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, 1149 cred, NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 1150 if (error) 1151 return (error); 1152 m_freem(nd->nd_mrep); 1153 nd->nd_mrep = NULL; 1154 if (nd->nd_repstat == 0) { 1155 nfscl_reqstart(nd, NFSPROC_GETATTR, nmp, nmp->nm_fh, 1156 nmp->nm_fhsize, NULL, NULL, 0, 0); 1157 NFSZERO_ATTRBIT(&attrbits); 1158 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_LEASETIME); 1159 (void) nfsrv_putattrbit(nd, &attrbits); 1160 nd->nd_flag |= ND_USEGSSNAME; 1161 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, 1162 cred, NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 1163 if (error) 1164 return (error); 1165 if (nd->nd_repstat == 0) { 1166 error = nfsv4_loadattr(nd, NULL, NULL, NULL, NULL, 0, NULL, 1167 NULL, NULL, NULL, NULL, 0, NULL, &lease, NULL, p, cred); 1168 if (error) 1169 goto nfsmout; 1170 clp->nfsc_renew = NFSCL_RENEW(lease); 1171 clp->nfsc_expire = NFSD_MONOSEC + clp->nfsc_renew; 1172 clp->nfsc_clientidrev++; 1173 if (clp->nfsc_clientidrev == 0) 1174 clp->nfsc_clientidrev++; 1175 } 1176 } 1177 } 1178 error = nd->nd_repstat; 1179 nfsmout: 1180 m_freem(nd->nd_mrep); 1181 return (error); 1182 } 1183 1184 /* 1185 * nfs getattr call. 1186 */ 1187 int 1188 nfsrpc_getattr(vnode_t vp, struct ucred *cred, NFSPROC_T *p, 1189 struct nfsvattr *nap, void *stuff) 1190 { 1191 struct nfsrv_descript nfsd, *nd = &nfsd; 1192 int error; 1193 nfsattrbit_t attrbits; 1194 1195 NFSCL_REQSTART(nd, NFSPROC_GETATTR, vp); 1196 if (nd->nd_flag & ND_NFSV4) { 1197 NFSGETATTR_ATTRBIT(&attrbits); 1198 (void) nfsrv_putattrbit(nd, &attrbits); 1199 } 1200 error = nfscl_request(nd, vp, p, cred, stuff); 1201 if (error) 1202 return (error); 1203 if (!nd->nd_repstat) 1204 error = nfsm_loadattr(nd, nap); 1205 else 1206 error = nd->nd_repstat; 1207 m_freem(nd->nd_mrep); 1208 return (error); 1209 } 1210 1211 /* 1212 * nfs getattr call with non-vnode arguemnts. 1213 */ 1214 int 1215 nfsrpc_getattrnovp(struct nfsmount *nmp, u_int8_t *fhp, int fhlen, int syscred, 1216 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, u_int64_t *xidp, 1217 uint32_t *leasep) 1218 { 1219 struct nfsrv_descript nfsd, *nd = &nfsd; 1220 int error, vers = NFS_VER2; 1221 nfsattrbit_t attrbits; 1222 1223 nfscl_reqstart(nd, NFSPROC_GETATTR, nmp, fhp, fhlen, NULL, NULL, 0, 0); 1224 if (nd->nd_flag & ND_NFSV4) { 1225 vers = NFS_VER4; 1226 NFSGETATTR_ATTRBIT(&attrbits); 1227 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_LEASETIME); 1228 (void) nfsrv_putattrbit(nd, &attrbits); 1229 } else if (nd->nd_flag & ND_NFSV3) { 1230 vers = NFS_VER3; 1231 } 1232 if (syscred) 1233 nd->nd_flag |= ND_USEGSSNAME; 1234 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 1235 NFS_PROG, vers, NULL, 1, xidp, NULL); 1236 if (error) 1237 return (error); 1238 if (nd->nd_repstat == 0) { 1239 if ((nd->nd_flag & ND_NFSV4) != 0) 1240 error = nfsv4_loadattr(nd, NULL, nap, NULL, NULL, 0, 1241 NULL, NULL, NULL, NULL, NULL, 0, NULL, leasep, NULL, 1242 NULL, NULL); 1243 else 1244 error = nfsm_loadattr(nd, nap); 1245 } else 1246 error = nd->nd_repstat; 1247 m_freem(nd->nd_mrep); 1248 return (error); 1249 } 1250 1251 /* 1252 * Do an nfs setattr operation. 1253 */ 1254 int 1255 nfsrpc_setattr(vnode_t vp, struct vattr *vap, NFSACL_T *aclp, 1256 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *rnap, int *attrflagp, 1257 void *stuff) 1258 { 1259 int error, expireret = 0, openerr, retrycnt; 1260 u_int32_t clidrev = 0, mode; 1261 struct nfsmount *nmp = VFSTONFS(vp->v_mount); 1262 struct nfsfh *nfhp; 1263 nfsv4stateid_t stateid; 1264 void *lckp; 1265 1266 if (nmp->nm_clp != NULL) 1267 clidrev = nmp->nm_clp->nfsc_clientidrev; 1268 if (vap != NULL && NFSATTRISSET(u_quad_t, vap, va_size)) 1269 mode = NFSV4OPEN_ACCESSWRITE; 1270 else 1271 mode = NFSV4OPEN_ACCESSREAD; 1272 retrycnt = 0; 1273 do { 1274 lckp = NULL; 1275 openerr = 1; 1276 if (NFSHASNFSV4(nmp)) { 1277 nfhp = VTONFS(vp)->n_fhp; 1278 error = nfscl_getstateid(vp, nfhp->nfh_fh, 1279 nfhp->nfh_len, mode, 0, cred, p, &stateid, &lckp); 1280 if (error && vnode_vtype(vp) == VREG && 1281 (mode == NFSV4OPEN_ACCESSWRITE || 1282 nfstest_openallsetattr)) { 1283 /* 1284 * No Open stateid, so try and open the file 1285 * now. 1286 */ 1287 if (mode == NFSV4OPEN_ACCESSWRITE) 1288 openerr = nfsrpc_open(vp, FWRITE, cred, 1289 p); 1290 else 1291 openerr = nfsrpc_open(vp, FREAD, cred, 1292 p); 1293 if (!openerr) 1294 (void) nfscl_getstateid(vp, 1295 nfhp->nfh_fh, nfhp->nfh_len, 1296 mode, 0, cred, p, &stateid, &lckp); 1297 } 1298 } 1299 if (vap != NULL) 1300 error = nfsrpc_setattrrpc(vp, vap, &stateid, cred, p, 1301 rnap, attrflagp, stuff); 1302 else 1303 error = nfsrpc_setaclrpc(vp, cred, p, aclp, &stateid, 1304 stuff); 1305 if (error == NFSERR_OPENMODE && mode == NFSV4OPEN_ACCESSREAD) { 1306 NFSLOCKMNT(nmp); 1307 nmp->nm_state |= NFSSTA_OPENMODE; 1308 NFSUNLOCKMNT(nmp); 1309 } 1310 if (error == NFSERR_STALESTATEID) 1311 nfscl_initiate_recovery(nmp->nm_clp); 1312 if (lckp != NULL) 1313 nfscl_lockderef(lckp); 1314 if (!openerr) 1315 (void) nfsrpc_close(vp, 0, p); 1316 if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 1317 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 1318 error == NFSERR_OLDSTATEID || error == NFSERR_BADSESSION) { 1319 (void) nfs_catnap(PZERO, error, "nfs_setattr"); 1320 } else if ((error == NFSERR_EXPIRED || 1321 error == NFSERR_BADSTATEID) && clidrev != 0) { 1322 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p); 1323 } 1324 retrycnt++; 1325 } while (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 1326 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 1327 error == NFSERR_BADSESSION || 1328 (error == NFSERR_OLDSTATEID && retrycnt < 20) || 1329 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) && 1330 expireret == 0 && clidrev != 0 && retrycnt < 4) || 1331 (error == NFSERR_OPENMODE && mode == NFSV4OPEN_ACCESSREAD && 1332 retrycnt < 4)); 1333 if (error && retrycnt >= 4) 1334 error = EIO; 1335 return (error); 1336 } 1337 1338 static int 1339 nfsrpc_setattrrpc(vnode_t vp, struct vattr *vap, 1340 nfsv4stateid_t *stateidp, struct ucred *cred, NFSPROC_T *p, 1341 struct nfsvattr *rnap, int *attrflagp, void *stuff) 1342 { 1343 u_int32_t *tl; 1344 struct nfsrv_descript nfsd, *nd = &nfsd; 1345 int error; 1346 nfsattrbit_t attrbits; 1347 1348 *attrflagp = 0; 1349 NFSCL_REQSTART(nd, NFSPROC_SETATTR, vp); 1350 if (nd->nd_flag & ND_NFSV4) 1351 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID); 1352 vap->va_type = vnode_vtype(vp); 1353 nfscl_fillsattr(nd, vap, vp, NFSSATTR_FULL, 0); 1354 if (nd->nd_flag & ND_NFSV3) { 1355 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1356 *tl = newnfs_false; 1357 } else if (nd->nd_flag & ND_NFSV4) { 1358 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1359 *tl = txdr_unsigned(NFSV4OP_GETATTR); 1360 NFSGETATTR_ATTRBIT(&attrbits); 1361 (void) nfsrv_putattrbit(nd, &attrbits); 1362 } 1363 error = nfscl_request(nd, vp, p, cred, stuff); 1364 if (error) 1365 return (error); 1366 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) 1367 error = nfscl_wcc_data(nd, vp, rnap, attrflagp, NULL, stuff); 1368 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == ND_NFSV4 && !error) 1369 error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL); 1370 if (!(nd->nd_flag & ND_NFSV3) && !nd->nd_repstat && !error) 1371 error = nfscl_postop_attr(nd, rnap, attrflagp, stuff); 1372 m_freem(nd->nd_mrep); 1373 if (nd->nd_repstat && !error) 1374 error = nd->nd_repstat; 1375 return (error); 1376 } 1377 1378 /* 1379 * nfs lookup rpc 1380 */ 1381 int 1382 nfsrpc_lookup(vnode_t dvp, char *name, int len, struct ucred *cred, 1383 NFSPROC_T *p, struct nfsvattr *dnap, struct nfsvattr *nap, 1384 struct nfsfh **nfhpp, int *attrflagp, int *dattrflagp, void *stuff) 1385 { 1386 u_int32_t *tl; 1387 struct nfsrv_descript nfsd, *nd = &nfsd; 1388 struct nfsmount *nmp; 1389 struct nfsnode *np; 1390 struct nfsfh *nfhp; 1391 nfsattrbit_t attrbits; 1392 int error = 0, lookupp = 0; 1393 1394 *attrflagp = 0; 1395 *dattrflagp = 0; 1396 if (vnode_vtype(dvp) != VDIR) 1397 return (ENOTDIR); 1398 nmp = VFSTONFS(dvp->v_mount); 1399 if (len > NFS_MAXNAMLEN) 1400 return (ENAMETOOLONG); 1401 if (NFSHASNFSV4(nmp) && len == 1 && 1402 name[0] == '.') { 1403 /* 1404 * Just return the current dir's fh. 1405 */ 1406 np = VTONFS(dvp); 1407 nfhp = malloc(sizeof (struct nfsfh) + 1408 np->n_fhp->nfh_len, M_NFSFH, M_WAITOK); 1409 nfhp->nfh_len = np->n_fhp->nfh_len; 1410 NFSBCOPY(np->n_fhp->nfh_fh, nfhp->nfh_fh, nfhp->nfh_len); 1411 *nfhpp = nfhp; 1412 return (0); 1413 } 1414 if (NFSHASNFSV4(nmp) && len == 2 && 1415 name[0] == '.' && name[1] == '.') { 1416 lookupp = 1; 1417 NFSCL_REQSTART(nd, NFSPROC_LOOKUPP, dvp); 1418 } else { 1419 NFSCL_REQSTART(nd, NFSPROC_LOOKUP, dvp); 1420 (void) nfsm_strtom(nd, name, len); 1421 } 1422 if (nd->nd_flag & ND_NFSV4) { 1423 NFSGETATTR_ATTRBIT(&attrbits); 1424 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1425 *tl++ = txdr_unsigned(NFSV4OP_GETFH); 1426 *tl = txdr_unsigned(NFSV4OP_GETATTR); 1427 (void) nfsrv_putattrbit(nd, &attrbits); 1428 } 1429 error = nfscl_request(nd, dvp, p, cred, stuff); 1430 if (error) 1431 return (error); 1432 if (nd->nd_repstat) { 1433 /* 1434 * When an NFSv4 Lookupp returns ENOENT, it means that 1435 * the lookup is at the root of an fs, so return this dir. 1436 */ 1437 if (nd->nd_repstat == NFSERR_NOENT && lookupp) { 1438 np = VTONFS(dvp); 1439 nfhp = malloc(sizeof (struct nfsfh) + 1440 np->n_fhp->nfh_len, M_NFSFH, M_WAITOK); 1441 nfhp->nfh_len = np->n_fhp->nfh_len; 1442 NFSBCOPY(np->n_fhp->nfh_fh, nfhp->nfh_fh, nfhp->nfh_len); 1443 *nfhpp = nfhp; 1444 m_freem(nd->nd_mrep); 1445 return (0); 1446 } 1447 if (nd->nd_flag & ND_NFSV3) 1448 error = nfscl_postop_attr(nd, dnap, dattrflagp, stuff); 1449 else if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == 1450 ND_NFSV4) { 1451 /* Load the directory attributes. */ 1452 error = nfsm_loadattr(nd, dnap); 1453 if (error == 0) 1454 *dattrflagp = 1; 1455 } 1456 goto nfsmout; 1457 } 1458 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == ND_NFSV4) { 1459 /* Load the directory attributes. */ 1460 error = nfsm_loadattr(nd, dnap); 1461 if (error != 0) 1462 goto nfsmout; 1463 *dattrflagp = 1; 1464 /* Skip over the Lookup and GetFH operation status values. */ 1465 NFSM_DISSECT(tl, u_int32_t *, 4 * NFSX_UNSIGNED); 1466 } 1467 error = nfsm_getfh(nd, nfhpp); 1468 if (error) 1469 goto nfsmout; 1470 1471 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 1472 if ((nd->nd_flag & ND_NFSV3) && !error) 1473 error = nfscl_postop_attr(nd, dnap, dattrflagp, stuff); 1474 nfsmout: 1475 m_freem(nd->nd_mrep); 1476 if (!error && nd->nd_repstat) 1477 error = nd->nd_repstat; 1478 return (error); 1479 } 1480 1481 /* 1482 * Do a readlink rpc. 1483 */ 1484 int 1485 nfsrpc_readlink(vnode_t vp, struct uio *uiop, struct ucred *cred, 1486 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff) 1487 { 1488 u_int32_t *tl; 1489 struct nfsrv_descript nfsd, *nd = &nfsd; 1490 struct nfsnode *np = VTONFS(vp); 1491 nfsattrbit_t attrbits; 1492 int error, len, cangetattr = 1; 1493 1494 *attrflagp = 0; 1495 NFSCL_REQSTART(nd, NFSPROC_READLINK, vp); 1496 if (nd->nd_flag & ND_NFSV4) { 1497 /* 1498 * And do a Getattr op. 1499 */ 1500 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1501 *tl = txdr_unsigned(NFSV4OP_GETATTR); 1502 NFSGETATTR_ATTRBIT(&attrbits); 1503 (void) nfsrv_putattrbit(nd, &attrbits); 1504 } 1505 error = nfscl_request(nd, vp, p, cred, stuff); 1506 if (error) 1507 return (error); 1508 if (nd->nd_flag & ND_NFSV3) 1509 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 1510 if (!nd->nd_repstat && !error) { 1511 NFSM_STRSIZ(len, NFS_MAXPATHLEN); 1512 /* 1513 * This seems weird to me, but must have been added to 1514 * FreeBSD for some reason. The only thing I can think of 1515 * is that there was/is some server that replies with 1516 * more link data than it should? 1517 */ 1518 if (len == NFS_MAXPATHLEN) { 1519 NFSLOCKNODE(np); 1520 if (np->n_size > 0 && np->n_size < NFS_MAXPATHLEN) { 1521 len = np->n_size; 1522 cangetattr = 0; 1523 } 1524 NFSUNLOCKNODE(np); 1525 } 1526 error = nfsm_mbufuio(nd, uiop, len); 1527 if ((nd->nd_flag & ND_NFSV4) && !error && cangetattr) 1528 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 1529 } 1530 if (nd->nd_repstat && !error) 1531 error = nd->nd_repstat; 1532 nfsmout: 1533 m_freem(nd->nd_mrep); 1534 return (error); 1535 } 1536 1537 /* 1538 * Read operation. 1539 */ 1540 int 1541 nfsrpc_read(vnode_t vp, struct uio *uiop, struct ucred *cred, 1542 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff) 1543 { 1544 int error, expireret = 0, retrycnt; 1545 u_int32_t clidrev = 0; 1546 struct nfsmount *nmp = VFSTONFS(vp->v_mount); 1547 struct nfsnode *np = VTONFS(vp); 1548 struct ucred *newcred; 1549 struct nfsfh *nfhp = NULL; 1550 nfsv4stateid_t stateid; 1551 void *lckp; 1552 1553 if (nmp->nm_clp != NULL) 1554 clidrev = nmp->nm_clp->nfsc_clientidrev; 1555 newcred = cred; 1556 if (NFSHASNFSV4(nmp)) { 1557 nfhp = np->n_fhp; 1558 newcred = NFSNEWCRED(cred); 1559 } 1560 retrycnt = 0; 1561 do { 1562 lckp = NULL; 1563 if (NFSHASNFSV4(nmp)) 1564 (void)nfscl_getstateid(vp, nfhp->nfh_fh, nfhp->nfh_len, 1565 NFSV4OPEN_ACCESSREAD, 0, newcred, p, &stateid, 1566 &lckp); 1567 error = nfsrpc_readrpc(vp, uiop, newcred, &stateid, p, nap, 1568 attrflagp, stuff); 1569 if (error == NFSERR_OPENMODE) { 1570 NFSLOCKMNT(nmp); 1571 nmp->nm_state |= NFSSTA_OPENMODE; 1572 NFSUNLOCKMNT(nmp); 1573 } 1574 if (error == NFSERR_STALESTATEID) 1575 nfscl_initiate_recovery(nmp->nm_clp); 1576 if (lckp != NULL) 1577 nfscl_lockderef(lckp); 1578 if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 1579 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 1580 error == NFSERR_OLDSTATEID || error == NFSERR_BADSESSION) { 1581 (void) nfs_catnap(PZERO, error, "nfs_read"); 1582 } else if ((error == NFSERR_EXPIRED || 1583 error == NFSERR_BADSTATEID) && clidrev != 0) { 1584 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p); 1585 } 1586 retrycnt++; 1587 } while (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 1588 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 1589 error == NFSERR_BADSESSION || 1590 (error == NFSERR_OLDSTATEID && retrycnt < 20) || 1591 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) && 1592 expireret == 0 && clidrev != 0 && retrycnt < 4) || 1593 (error == NFSERR_OPENMODE && retrycnt < 4)); 1594 if (error && retrycnt >= 4) 1595 error = EIO; 1596 if (NFSHASNFSV4(nmp)) 1597 NFSFREECRED(newcred); 1598 return (error); 1599 } 1600 1601 /* 1602 * The actual read RPC. 1603 */ 1604 static int 1605 nfsrpc_readrpc(vnode_t vp, struct uio *uiop, struct ucred *cred, 1606 nfsv4stateid_t *stateidp, NFSPROC_T *p, struct nfsvattr *nap, 1607 int *attrflagp, void *stuff) 1608 { 1609 u_int32_t *tl; 1610 int error = 0, len, retlen, tsiz, eof = 0; 1611 struct nfsrv_descript nfsd; 1612 struct nfsmount *nmp = VFSTONFS(vp->v_mount); 1613 struct nfsrv_descript *nd = &nfsd; 1614 int rsize; 1615 off_t tmp_off; 1616 1617 *attrflagp = 0; 1618 tsiz = uiop->uio_resid; 1619 tmp_off = uiop->uio_offset + tsiz; 1620 NFSLOCKMNT(nmp); 1621 if (tmp_off > nmp->nm_maxfilesize || tmp_off < uiop->uio_offset) { 1622 NFSUNLOCKMNT(nmp); 1623 return (EFBIG); 1624 } 1625 rsize = nmp->nm_rsize; 1626 NFSUNLOCKMNT(nmp); 1627 nd->nd_mrep = NULL; 1628 while (tsiz > 0) { 1629 *attrflagp = 0; 1630 len = (tsiz > rsize) ? rsize : tsiz; 1631 NFSCL_REQSTART(nd, NFSPROC_READ, vp); 1632 if (nd->nd_flag & ND_NFSV4) 1633 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID); 1634 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED * 3); 1635 if (nd->nd_flag & ND_NFSV2) { 1636 *tl++ = txdr_unsigned(uiop->uio_offset); 1637 *tl++ = txdr_unsigned(len); 1638 *tl = 0; 1639 } else { 1640 txdr_hyper(uiop->uio_offset, tl); 1641 *(tl + 2) = txdr_unsigned(len); 1642 } 1643 /* 1644 * Since I can't do a Getattr for NFSv4 for Write, there 1645 * doesn't seem any point in doing one here, either. 1646 * (See the comment in nfsrpc_writerpc() for more info.) 1647 */ 1648 error = nfscl_request(nd, vp, p, cred, stuff); 1649 if (error) 1650 return (error); 1651 if (nd->nd_flag & ND_NFSV3) { 1652 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 1653 } else if (!nd->nd_repstat && (nd->nd_flag & ND_NFSV2)) { 1654 error = nfsm_loadattr(nd, nap); 1655 if (!error) 1656 *attrflagp = 1; 1657 } 1658 if (nd->nd_repstat || error) { 1659 if (!error) 1660 error = nd->nd_repstat; 1661 goto nfsmout; 1662 } 1663 if (nd->nd_flag & ND_NFSV3) { 1664 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1665 eof = fxdr_unsigned(int, *(tl + 1)); 1666 } else if (nd->nd_flag & ND_NFSV4) { 1667 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 1668 eof = fxdr_unsigned(int, *tl); 1669 } 1670 NFSM_STRSIZ(retlen, len); 1671 error = nfsm_mbufuio(nd, uiop, retlen); 1672 if (error) 1673 goto nfsmout; 1674 m_freem(nd->nd_mrep); 1675 nd->nd_mrep = NULL; 1676 tsiz -= retlen; 1677 if (!(nd->nd_flag & ND_NFSV2)) { 1678 if (eof || retlen == 0) 1679 tsiz = 0; 1680 } else if (retlen < len) 1681 tsiz = 0; 1682 } 1683 return (0); 1684 nfsmout: 1685 if (nd->nd_mrep != NULL) 1686 m_freem(nd->nd_mrep); 1687 return (error); 1688 } 1689 1690 /* 1691 * nfs write operation 1692 * When called_from_strategy != 0, it should return EIO for an error that 1693 * indicates recovery is in progress, so that the buffer will be left 1694 * dirty and be written back to the server later. If it loops around, 1695 * the recovery thread could get stuck waiting for the buffer and recovery 1696 * will then deadlock. 1697 */ 1698 int 1699 nfsrpc_write(vnode_t vp, struct uio *uiop, int *iomode, int *must_commit, 1700 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, 1701 void *stuff, int called_from_strategy) 1702 { 1703 int error, expireret = 0, retrycnt, nostateid; 1704 u_int32_t clidrev = 0; 1705 struct nfsmount *nmp = VFSTONFS(vp->v_mount); 1706 struct nfsnode *np = VTONFS(vp); 1707 struct ucred *newcred; 1708 struct nfsfh *nfhp = NULL; 1709 nfsv4stateid_t stateid; 1710 void *lckp; 1711 1712 *must_commit = 0; 1713 if (nmp->nm_clp != NULL) 1714 clidrev = nmp->nm_clp->nfsc_clientidrev; 1715 newcred = cred; 1716 if (NFSHASNFSV4(nmp)) { 1717 newcred = NFSNEWCRED(cred); 1718 nfhp = np->n_fhp; 1719 } 1720 retrycnt = 0; 1721 do { 1722 lckp = NULL; 1723 nostateid = 0; 1724 if (NFSHASNFSV4(nmp)) { 1725 (void)nfscl_getstateid(vp, nfhp->nfh_fh, nfhp->nfh_len, 1726 NFSV4OPEN_ACCESSWRITE, 0, newcred, p, &stateid, 1727 &lckp); 1728 if (stateid.other[0] == 0 && stateid.other[1] == 0 && 1729 stateid.other[2] == 0) { 1730 nostateid = 1; 1731 NFSCL_DEBUG(1, "stateid0 in write\n"); 1732 } 1733 } 1734 1735 /* 1736 * If there is no stateid for NFSv4, it means this is an 1737 * extraneous write after close. Basically a poorly 1738 * implemented buffer cache. Just don't do the write. 1739 */ 1740 if (nostateid) 1741 error = 0; 1742 else 1743 error = nfsrpc_writerpc(vp, uiop, iomode, must_commit, 1744 newcred, &stateid, p, nap, attrflagp, stuff); 1745 if (error == NFSERR_STALESTATEID) 1746 nfscl_initiate_recovery(nmp->nm_clp); 1747 if (lckp != NULL) 1748 nfscl_lockderef(lckp); 1749 if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 1750 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 1751 error == NFSERR_OLDSTATEID || error == NFSERR_BADSESSION) { 1752 (void) nfs_catnap(PZERO, error, "nfs_write"); 1753 } else if ((error == NFSERR_EXPIRED || 1754 error == NFSERR_BADSTATEID) && clidrev != 0) { 1755 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p); 1756 } 1757 retrycnt++; 1758 } while (error == NFSERR_GRACE || error == NFSERR_DELAY || 1759 ((error == NFSERR_STALESTATEID || error == NFSERR_BADSESSION || 1760 error == NFSERR_STALEDONTRECOVER) && called_from_strategy == 0) || 1761 (error == NFSERR_OLDSTATEID && retrycnt < 20) || 1762 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) && 1763 expireret == 0 && clidrev != 0 && retrycnt < 4)); 1764 if (error != 0 && (retrycnt >= 4 || 1765 ((error == NFSERR_STALESTATEID || error == NFSERR_BADSESSION || 1766 error == NFSERR_STALEDONTRECOVER) && called_from_strategy != 0))) 1767 error = EIO; 1768 if (NFSHASNFSV4(nmp)) 1769 NFSFREECRED(newcred); 1770 return (error); 1771 } 1772 1773 /* 1774 * The actual write RPC. 1775 */ 1776 static int 1777 nfsrpc_writerpc(vnode_t vp, struct uio *uiop, int *iomode, 1778 int *must_commit, struct ucred *cred, nfsv4stateid_t *stateidp, 1779 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff) 1780 { 1781 u_int32_t *tl; 1782 struct nfsmount *nmp = VFSTONFS(vp->v_mount); 1783 struct nfsnode *np = VTONFS(vp); 1784 int error = 0, len, tsiz, rlen, commit, committed = NFSWRITE_FILESYNC; 1785 int wccflag = 0, wsize; 1786 int32_t backup; 1787 struct nfsrv_descript nfsd; 1788 struct nfsrv_descript *nd = &nfsd; 1789 nfsattrbit_t attrbits; 1790 off_t tmp_off; 1791 1792 KASSERT(uiop->uio_iovcnt == 1, ("nfs: writerpc iovcnt > 1")); 1793 *attrflagp = 0; 1794 tsiz = uiop->uio_resid; 1795 tmp_off = uiop->uio_offset + tsiz; 1796 NFSLOCKMNT(nmp); 1797 if (tmp_off > nmp->nm_maxfilesize || tmp_off < uiop->uio_offset) { 1798 NFSUNLOCKMNT(nmp); 1799 return (EFBIG); 1800 } 1801 wsize = nmp->nm_wsize; 1802 NFSUNLOCKMNT(nmp); 1803 nd->nd_mrep = NULL; /* NFSv2 sometimes does a write with */ 1804 nd->nd_repstat = 0; /* uio_resid == 0, so the while is not done */ 1805 while (tsiz > 0) { 1806 *attrflagp = 0; 1807 len = (tsiz > wsize) ? wsize : tsiz; 1808 NFSCL_REQSTART(nd, NFSPROC_WRITE, vp); 1809 if (nd->nd_flag & ND_NFSV4) { 1810 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID); 1811 NFSM_BUILD(tl, u_int32_t *, NFSX_HYPER+2*NFSX_UNSIGNED); 1812 txdr_hyper(uiop->uio_offset, tl); 1813 tl += 2; 1814 *tl++ = txdr_unsigned(*iomode); 1815 *tl = txdr_unsigned(len); 1816 } else if (nd->nd_flag & ND_NFSV3) { 1817 NFSM_BUILD(tl, u_int32_t *, NFSX_HYPER+3*NFSX_UNSIGNED); 1818 txdr_hyper(uiop->uio_offset, tl); 1819 tl += 2; 1820 *tl++ = txdr_unsigned(len); 1821 *tl++ = txdr_unsigned(*iomode); 1822 *tl = txdr_unsigned(len); 1823 } else { 1824 u_int32_t x; 1825 1826 NFSM_BUILD(tl, u_int32_t *, 4 * NFSX_UNSIGNED); 1827 /* 1828 * Not sure why someone changed this, since the 1829 * RFC clearly states that "beginoffset" and 1830 * "totalcount" are ignored, but it wouldn't 1831 * surprise me if there's a busted server out there. 1832 */ 1833 /* Set both "begin" and "current" to non-garbage. */ 1834 x = txdr_unsigned((u_int32_t)uiop->uio_offset); 1835 *tl++ = x; /* "begin offset" */ 1836 *tl++ = x; /* "current offset" */ 1837 x = txdr_unsigned(len); 1838 *tl++ = x; /* total to this offset */ 1839 *tl = x; /* size of this write */ 1840 } 1841 nfsm_uiombuf(nd, uiop, len); 1842 /* 1843 * Although it is tempting to do a normal Getattr Op in the 1844 * NFSv4 compound, the result can be a nearly hung client 1845 * system if the Getattr asks for Owner and/or OwnerGroup. 1846 * It occurs when the client can't map either the Owner or 1847 * Owner_group name in the Getattr reply to a uid/gid. When 1848 * there is a cache miss, the kernel does an upcall to the 1849 * nfsuserd. Then, it can try and read the local /etc/passwd 1850 * or /etc/group file. It can then block in getnewbuf(), 1851 * waiting for dirty writes to be pushed to the NFS server. 1852 * The only reason this doesn't result in a complete 1853 * deadlock, is that the upcall times out and allows 1854 * the write to complete. However, progress is so slow 1855 * that it might just as well be deadlocked. 1856 * As such, we get the rest of the attributes, but not 1857 * Owner or Owner_group. 1858 * nb: nfscl_loadattrcache() needs to be told that these 1859 * partial attributes from a write rpc are being 1860 * passed in, via a argument flag. 1861 */ 1862 if (nd->nd_flag & ND_NFSV4) { 1863 NFSWRITEGETATTR_ATTRBIT(&attrbits); 1864 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1865 *tl = txdr_unsigned(NFSV4OP_GETATTR); 1866 (void) nfsrv_putattrbit(nd, &attrbits); 1867 } 1868 error = nfscl_request(nd, vp, p, cred, stuff); 1869 if (error) 1870 return (error); 1871 if (nd->nd_repstat) { 1872 /* 1873 * In case the rpc gets retried, roll 1874 * the uio fileds changed by nfsm_uiombuf() 1875 * back. 1876 */ 1877 uiop->uio_offset -= len; 1878 uiop->uio_resid += len; 1879 uiop->uio_iov->iov_base = 1880 (char *)uiop->uio_iov->iov_base - len; 1881 uiop->uio_iov->iov_len += len; 1882 } 1883 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) { 1884 error = nfscl_wcc_data(nd, vp, nap, attrflagp, 1885 &wccflag, stuff); 1886 if (error) 1887 goto nfsmout; 1888 } 1889 if (!nd->nd_repstat) { 1890 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) { 1891 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED 1892 + NFSX_VERF); 1893 rlen = fxdr_unsigned(int, *tl++); 1894 if (rlen == 0) { 1895 error = NFSERR_IO; 1896 goto nfsmout; 1897 } else if (rlen < len) { 1898 backup = len - rlen; 1899 uiop->uio_iov->iov_base = 1900 (char *)uiop->uio_iov->iov_base - 1901 backup; 1902 uiop->uio_iov->iov_len += backup; 1903 uiop->uio_offset -= backup; 1904 uiop->uio_resid += backup; 1905 len = rlen; 1906 } 1907 commit = fxdr_unsigned(int, *tl++); 1908 1909 /* 1910 * Return the lowest commitment level 1911 * obtained by any of the RPCs. 1912 */ 1913 if (committed == NFSWRITE_FILESYNC) 1914 committed = commit; 1915 else if (committed == NFSWRITE_DATASYNC && 1916 commit == NFSWRITE_UNSTABLE) 1917 committed = commit; 1918 NFSLOCKMNT(nmp); 1919 if (!NFSHASWRITEVERF(nmp)) { 1920 NFSBCOPY((caddr_t)tl, 1921 (caddr_t)&nmp->nm_verf[0], 1922 NFSX_VERF); 1923 NFSSETWRITEVERF(nmp); 1924 } else if (NFSBCMP(tl, nmp->nm_verf, 1925 NFSX_VERF)) { 1926 *must_commit = 1; 1927 NFSBCOPY(tl, nmp->nm_verf, NFSX_VERF); 1928 } 1929 NFSUNLOCKMNT(nmp); 1930 } 1931 if (nd->nd_flag & ND_NFSV4) 1932 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1933 if (nd->nd_flag & (ND_NFSV2 | ND_NFSV4)) { 1934 error = nfsm_loadattr(nd, nap); 1935 if (!error) 1936 *attrflagp = NFS_LATTR_NOSHRINK; 1937 } 1938 } else { 1939 error = nd->nd_repstat; 1940 } 1941 if (error) 1942 goto nfsmout; 1943 NFSWRITERPC_SETTIME(wccflag, np, nap, (nd->nd_flag & ND_NFSV4)); 1944 m_freem(nd->nd_mrep); 1945 nd->nd_mrep = NULL; 1946 tsiz -= len; 1947 } 1948 nfsmout: 1949 if (nd->nd_mrep != NULL) 1950 m_freem(nd->nd_mrep); 1951 *iomode = committed; 1952 if (nd->nd_repstat && !error) 1953 error = nd->nd_repstat; 1954 return (error); 1955 } 1956 1957 /* 1958 * nfs mknod rpc 1959 * For NFS v2 this is a kludge. Use a create rpc but with the IFMT bits of the 1960 * mode set to specify the file type and the size field for rdev. 1961 */ 1962 int 1963 nfsrpc_mknod(vnode_t dvp, char *name, int namelen, struct vattr *vap, 1964 u_int32_t rdev, enum vtype vtyp, struct ucred *cred, NFSPROC_T *p, 1965 struct nfsvattr *dnap, struct nfsvattr *nnap, struct nfsfh **nfhpp, 1966 int *attrflagp, int *dattrflagp, void *dstuff) 1967 { 1968 u_int32_t *tl; 1969 int error = 0; 1970 struct nfsrv_descript nfsd, *nd = &nfsd; 1971 nfsattrbit_t attrbits; 1972 1973 *nfhpp = NULL; 1974 *attrflagp = 0; 1975 *dattrflagp = 0; 1976 if (namelen > NFS_MAXNAMLEN) 1977 return (ENAMETOOLONG); 1978 NFSCL_REQSTART(nd, NFSPROC_MKNOD, dvp); 1979 if (nd->nd_flag & ND_NFSV4) { 1980 if (vtyp == VBLK || vtyp == VCHR) { 1981 NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 1982 *tl++ = vtonfsv34_type(vtyp); 1983 *tl++ = txdr_unsigned(NFSMAJOR(rdev)); 1984 *tl = txdr_unsigned(NFSMINOR(rdev)); 1985 } else { 1986 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1987 *tl = vtonfsv34_type(vtyp); 1988 } 1989 } 1990 (void) nfsm_strtom(nd, name, namelen); 1991 if (nd->nd_flag & ND_NFSV3) { 1992 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1993 *tl = vtonfsv34_type(vtyp); 1994 } 1995 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) 1996 nfscl_fillsattr(nd, vap, dvp, 0, 0); 1997 if ((nd->nd_flag & ND_NFSV3) && 1998 (vtyp == VCHR || vtyp == VBLK)) { 1999 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2000 *tl++ = txdr_unsigned(NFSMAJOR(rdev)); 2001 *tl = txdr_unsigned(NFSMINOR(rdev)); 2002 } 2003 if (nd->nd_flag & ND_NFSV4) { 2004 NFSGETATTR_ATTRBIT(&attrbits); 2005 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2006 *tl++ = txdr_unsigned(NFSV4OP_GETFH); 2007 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2008 (void) nfsrv_putattrbit(nd, &attrbits); 2009 } 2010 if (nd->nd_flag & ND_NFSV2) 2011 nfscl_fillsattr(nd, vap, dvp, NFSSATTR_SIZERDEV, rdev); 2012 error = nfscl_request(nd, dvp, p, cred, dstuff); 2013 if (error) 2014 return (error); 2015 if (nd->nd_flag & ND_NFSV4) 2016 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 2017 if (!nd->nd_repstat) { 2018 if (nd->nd_flag & ND_NFSV4) { 2019 NFSM_DISSECT(tl, u_int32_t *, 5 * NFSX_UNSIGNED); 2020 error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL); 2021 if (error) 2022 goto nfsmout; 2023 } 2024 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp); 2025 if (error) 2026 goto nfsmout; 2027 } 2028 if (nd->nd_flag & ND_NFSV3) 2029 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 2030 if (!error && nd->nd_repstat) 2031 error = nd->nd_repstat; 2032 nfsmout: 2033 m_freem(nd->nd_mrep); 2034 return (error); 2035 } 2036 2037 /* 2038 * nfs file create call 2039 * Mostly just call the approriate routine. (I separated out v4, so that 2040 * error recovery wouldn't be as difficult.) 2041 */ 2042 int 2043 nfsrpc_create(vnode_t dvp, char *name, int namelen, struct vattr *vap, 2044 nfsquad_t cverf, int fmode, struct ucred *cred, NFSPROC_T *p, 2045 struct nfsvattr *dnap, struct nfsvattr *nnap, struct nfsfh **nfhpp, 2046 int *attrflagp, int *dattrflagp, void *dstuff) 2047 { 2048 int error = 0, newone, expireret = 0, retrycnt, unlocked; 2049 struct nfsclowner *owp; 2050 struct nfscldeleg *dp; 2051 struct nfsmount *nmp = VFSTONFS(dvp->v_mount); 2052 u_int32_t clidrev; 2053 2054 if (NFSHASNFSV4(nmp)) { 2055 retrycnt = 0; 2056 do { 2057 dp = NULL; 2058 error = nfscl_open(dvp, NULL, 0, (NFSV4OPEN_ACCESSWRITE | 2059 NFSV4OPEN_ACCESSREAD), 0, cred, p, &owp, NULL, &newone, 2060 NULL, 1); 2061 if (error) 2062 return (error); 2063 if (nmp->nm_clp != NULL) 2064 clidrev = nmp->nm_clp->nfsc_clientidrev; 2065 else 2066 clidrev = 0; 2067 if (!NFSHASPNFS(nmp) || nfscl_enablecallb == 0 || 2068 nfs_numnfscbd == 0 || retrycnt > 0) 2069 error = nfsrpc_createv4(dvp, name, namelen, vap, cverf, 2070 fmode, owp, &dp, cred, p, dnap, nnap, nfhpp, 2071 attrflagp, dattrflagp, dstuff, &unlocked); 2072 else 2073 error = nfsrpc_getcreatelayout(dvp, name, namelen, vap, 2074 cverf, fmode, owp, &dp, cred, p, dnap, nnap, nfhpp, 2075 attrflagp, dattrflagp, dstuff, &unlocked); 2076 /* 2077 * There is no need to invalidate cached attributes here, 2078 * since new post-delegation issue attributes are always 2079 * returned by nfsrpc_createv4() and these will update the 2080 * attribute cache. 2081 */ 2082 if (dp != NULL) 2083 (void) nfscl_deleg(nmp->nm_mountp, owp->nfsow_clp, 2084 (*nfhpp)->nfh_fh, (*nfhpp)->nfh_len, cred, p, &dp); 2085 nfscl_ownerrelease(nmp, owp, error, newone, unlocked); 2086 if (error == NFSERR_GRACE || error == NFSERR_STALECLIENTID || 2087 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 2088 error == NFSERR_BADSESSION) { 2089 (void) nfs_catnap(PZERO, error, "nfs_open"); 2090 } else if ((error == NFSERR_EXPIRED || 2091 error == NFSERR_BADSTATEID) && clidrev != 0) { 2092 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p); 2093 retrycnt++; 2094 } 2095 } while (error == NFSERR_GRACE || error == NFSERR_STALECLIENTID || 2096 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 2097 error == NFSERR_BADSESSION || 2098 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) && 2099 expireret == 0 && clidrev != 0 && retrycnt < 4)); 2100 if (error && retrycnt >= 4) 2101 error = EIO; 2102 } else { 2103 error = nfsrpc_createv23(dvp, name, namelen, vap, cverf, 2104 fmode, cred, p, dnap, nnap, nfhpp, attrflagp, dattrflagp, 2105 dstuff); 2106 } 2107 return (error); 2108 } 2109 2110 /* 2111 * The create rpc for v2 and 3. 2112 */ 2113 static int 2114 nfsrpc_createv23(vnode_t dvp, char *name, int namelen, struct vattr *vap, 2115 nfsquad_t cverf, int fmode, struct ucred *cred, NFSPROC_T *p, 2116 struct nfsvattr *dnap, struct nfsvattr *nnap, struct nfsfh **nfhpp, 2117 int *attrflagp, int *dattrflagp, void *dstuff) 2118 { 2119 u_int32_t *tl; 2120 int error = 0; 2121 struct nfsrv_descript nfsd, *nd = &nfsd; 2122 2123 *nfhpp = NULL; 2124 *attrflagp = 0; 2125 *dattrflagp = 0; 2126 if (namelen > NFS_MAXNAMLEN) 2127 return (ENAMETOOLONG); 2128 NFSCL_REQSTART(nd, NFSPROC_CREATE, dvp); 2129 (void) nfsm_strtom(nd, name, namelen); 2130 if (nd->nd_flag & ND_NFSV3) { 2131 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2132 if (fmode & O_EXCL) { 2133 *tl = txdr_unsigned(NFSCREATE_EXCLUSIVE); 2134 NFSM_BUILD(tl, u_int32_t *, NFSX_VERF); 2135 *tl++ = cverf.lval[0]; 2136 *tl = cverf.lval[1]; 2137 } else { 2138 *tl = txdr_unsigned(NFSCREATE_UNCHECKED); 2139 nfscl_fillsattr(nd, vap, dvp, 0, 0); 2140 } 2141 } else { 2142 nfscl_fillsattr(nd, vap, dvp, NFSSATTR_SIZE0, 0); 2143 } 2144 error = nfscl_request(nd, dvp, p, cred, dstuff); 2145 if (error) 2146 return (error); 2147 if (nd->nd_repstat == 0) { 2148 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp); 2149 if (error) 2150 goto nfsmout; 2151 } 2152 if (nd->nd_flag & ND_NFSV3) 2153 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 2154 if (nd->nd_repstat != 0 && error == 0) 2155 error = nd->nd_repstat; 2156 nfsmout: 2157 m_freem(nd->nd_mrep); 2158 return (error); 2159 } 2160 2161 static int 2162 nfsrpc_createv4(vnode_t dvp, char *name, int namelen, struct vattr *vap, 2163 nfsquad_t cverf, int fmode, struct nfsclowner *owp, struct nfscldeleg **dpp, 2164 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap, 2165 struct nfsvattr *nnap, struct nfsfh **nfhpp, int *attrflagp, 2166 int *dattrflagp, void *dstuff, int *unlockedp) 2167 { 2168 u_int32_t *tl; 2169 int error = 0, deleg, newone, ret, acesize, limitby; 2170 struct nfsrv_descript nfsd, *nd = &nfsd; 2171 struct nfsclopen *op; 2172 struct nfscldeleg *dp = NULL; 2173 struct nfsnode *np; 2174 struct nfsfh *nfhp; 2175 nfsattrbit_t attrbits; 2176 nfsv4stateid_t stateid; 2177 u_int32_t rflags; 2178 struct nfsmount *nmp; 2179 struct nfsclsession *tsep; 2180 2181 nmp = VFSTONFS(dvp->v_mount); 2182 np = VTONFS(dvp); 2183 *unlockedp = 0; 2184 *nfhpp = NULL; 2185 *dpp = NULL; 2186 *attrflagp = 0; 2187 *dattrflagp = 0; 2188 if (namelen > NFS_MAXNAMLEN) 2189 return (ENAMETOOLONG); 2190 NFSCL_REQSTART(nd, NFSPROC_CREATE, dvp); 2191 /* 2192 * For V4, this is actually an Open op. 2193 */ 2194 NFSM_BUILD(tl, u_int32_t *, 5 * NFSX_UNSIGNED); 2195 *tl++ = txdr_unsigned(owp->nfsow_seqid); 2196 *tl++ = txdr_unsigned(NFSV4OPEN_ACCESSWRITE | 2197 NFSV4OPEN_ACCESSREAD); 2198 *tl++ = txdr_unsigned(NFSV4OPEN_DENYNONE); 2199 tsep = nfsmnt_mdssession(nmp); 2200 *tl++ = tsep->nfsess_clientid.lval[0]; 2201 *tl = tsep->nfsess_clientid.lval[1]; 2202 (void) nfsm_strtom(nd, owp->nfsow_owner, NFSV4CL_LOCKNAMELEN); 2203 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2204 *tl++ = txdr_unsigned(NFSV4OPEN_CREATE); 2205 if (fmode & O_EXCL) { 2206 if (NFSHASNFSV4N(nmp)) { 2207 if (NFSHASSESSPERSIST(nmp)) { 2208 /* Use GUARDED for persistent sessions. */ 2209 *tl = txdr_unsigned(NFSCREATE_GUARDED); 2210 nfscl_fillsattr(nd, vap, dvp, 0, 0); 2211 } else { 2212 /* Otherwise, use EXCLUSIVE4_1. */ 2213 *tl = txdr_unsigned(NFSCREATE_EXCLUSIVE41); 2214 NFSM_BUILD(tl, u_int32_t *, NFSX_VERF); 2215 *tl++ = cverf.lval[0]; 2216 *tl = cverf.lval[1]; 2217 nfscl_fillsattr(nd, vap, dvp, 0, 0); 2218 } 2219 } else { 2220 /* NFSv4.0 */ 2221 *tl = txdr_unsigned(NFSCREATE_EXCLUSIVE); 2222 NFSM_BUILD(tl, u_int32_t *, NFSX_VERF); 2223 *tl++ = cverf.lval[0]; 2224 *tl = cverf.lval[1]; 2225 } 2226 } else { 2227 *tl = txdr_unsigned(NFSCREATE_UNCHECKED); 2228 nfscl_fillsattr(nd, vap, dvp, 0, 0); 2229 } 2230 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2231 *tl = txdr_unsigned(NFSV4OPEN_CLAIMNULL); 2232 (void) nfsm_strtom(nd, name, namelen); 2233 /* Get the new file's handle and attributes. */ 2234 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2235 *tl++ = txdr_unsigned(NFSV4OP_GETFH); 2236 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2237 NFSGETATTR_ATTRBIT(&attrbits); 2238 (void) nfsrv_putattrbit(nd, &attrbits); 2239 /* Get the directory's post-op attributes. */ 2240 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2241 *tl = txdr_unsigned(NFSV4OP_PUTFH); 2242 (void) nfsm_fhtom(nd, np->n_fhp->nfh_fh, np->n_fhp->nfh_len, 0); 2243 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2244 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2245 (void) nfsrv_putattrbit(nd, &attrbits); 2246 error = nfscl_request(nd, dvp, p, cred, dstuff); 2247 if (error) 2248 return (error); 2249 NFSCL_INCRSEQID(owp->nfsow_seqid, nd); 2250 if (nd->nd_repstat == 0) { 2251 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID + 2252 6 * NFSX_UNSIGNED); 2253 stateid.seqid = *tl++; 2254 stateid.other[0] = *tl++; 2255 stateid.other[1] = *tl++; 2256 stateid.other[2] = *tl; 2257 rflags = fxdr_unsigned(u_int32_t, *(tl + 6)); 2258 (void) nfsrv_getattrbits(nd, &attrbits, NULL, NULL); 2259 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2260 deleg = fxdr_unsigned(int, *tl); 2261 if (deleg == NFSV4OPEN_DELEGATEREAD || 2262 deleg == NFSV4OPEN_DELEGATEWRITE) { 2263 if (!(owp->nfsow_clp->nfsc_flags & 2264 NFSCLFLAGS_FIRSTDELEG)) 2265 owp->nfsow_clp->nfsc_flags |= 2266 (NFSCLFLAGS_FIRSTDELEG | NFSCLFLAGS_GOTDELEG); 2267 dp = malloc( 2268 sizeof (struct nfscldeleg) + NFSX_V4FHMAX, 2269 M_NFSCLDELEG, M_WAITOK); 2270 LIST_INIT(&dp->nfsdl_owner); 2271 LIST_INIT(&dp->nfsdl_lock); 2272 dp->nfsdl_clp = owp->nfsow_clp; 2273 newnfs_copyincred(cred, &dp->nfsdl_cred); 2274 nfscl_lockinit(&dp->nfsdl_rwlock); 2275 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID + 2276 NFSX_UNSIGNED); 2277 dp->nfsdl_stateid.seqid = *tl++; 2278 dp->nfsdl_stateid.other[0] = *tl++; 2279 dp->nfsdl_stateid.other[1] = *tl++; 2280 dp->nfsdl_stateid.other[2] = *tl++; 2281 ret = fxdr_unsigned(int, *tl); 2282 if (deleg == NFSV4OPEN_DELEGATEWRITE) { 2283 dp->nfsdl_flags = NFSCLDL_WRITE; 2284 /* 2285 * Indicates how much the file can grow. 2286 */ 2287 NFSM_DISSECT(tl, u_int32_t *, 2288 3 * NFSX_UNSIGNED); 2289 limitby = fxdr_unsigned(int, *tl++); 2290 switch (limitby) { 2291 case NFSV4OPEN_LIMITSIZE: 2292 dp->nfsdl_sizelimit = fxdr_hyper(tl); 2293 break; 2294 case NFSV4OPEN_LIMITBLOCKS: 2295 dp->nfsdl_sizelimit = 2296 fxdr_unsigned(u_int64_t, *tl++); 2297 dp->nfsdl_sizelimit *= 2298 fxdr_unsigned(u_int64_t, *tl); 2299 break; 2300 default: 2301 error = NFSERR_BADXDR; 2302 goto nfsmout; 2303 } 2304 } else { 2305 dp->nfsdl_flags = NFSCLDL_READ; 2306 } 2307 if (ret) 2308 dp->nfsdl_flags |= NFSCLDL_RECALL; 2309 error = nfsrv_dissectace(nd, &dp->nfsdl_ace, &ret, 2310 &acesize, p); 2311 if (error) 2312 goto nfsmout; 2313 } else if (deleg != NFSV4OPEN_DELEGATENONE) { 2314 error = NFSERR_BADXDR; 2315 goto nfsmout; 2316 } 2317 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp); 2318 if (error) 2319 goto nfsmout; 2320 /* Get rid of the PutFH and Getattr status values. */ 2321 NFSM_DISSECT(tl, u_int32_t *, 4 * NFSX_UNSIGNED); 2322 /* Load the directory attributes. */ 2323 error = nfsm_loadattr(nd, dnap); 2324 if (error) 2325 goto nfsmout; 2326 *dattrflagp = 1; 2327 if (dp != NULL && *attrflagp) { 2328 dp->nfsdl_change = nnap->na_filerev; 2329 dp->nfsdl_modtime = nnap->na_mtime; 2330 dp->nfsdl_flags |= NFSCLDL_MODTIMESET; 2331 } 2332 /* 2333 * We can now complete the Open state. 2334 */ 2335 nfhp = *nfhpp; 2336 if (dp != NULL) { 2337 dp->nfsdl_fhlen = nfhp->nfh_len; 2338 NFSBCOPY(nfhp->nfh_fh, dp->nfsdl_fh, nfhp->nfh_len); 2339 } 2340 /* 2341 * Get an Open structure that will be 2342 * attached to the OpenOwner, acquired already. 2343 */ 2344 error = nfscl_open(dvp, nfhp->nfh_fh, nfhp->nfh_len, 2345 (NFSV4OPEN_ACCESSWRITE | NFSV4OPEN_ACCESSREAD), 0, 2346 cred, p, NULL, &op, &newone, NULL, 0); 2347 if (error) 2348 goto nfsmout; 2349 op->nfso_stateid = stateid; 2350 newnfs_copyincred(cred, &op->nfso_cred); 2351 if ((rflags & NFSV4OPEN_RESULTCONFIRM)) { 2352 do { 2353 ret = nfsrpc_openconfirm(dvp, nfhp->nfh_fh, 2354 nfhp->nfh_len, op, cred, p); 2355 if (ret == NFSERR_DELAY) 2356 (void) nfs_catnap(PZERO, ret, "nfs_create"); 2357 } while (ret == NFSERR_DELAY); 2358 error = ret; 2359 } 2360 2361 /* 2362 * If the server is handing out delegations, but we didn't 2363 * get one because an OpenConfirm was required, try the 2364 * Open again, to get a delegation. This is a harmless no-op, 2365 * from a server's point of view. 2366 */ 2367 if ((rflags & NFSV4OPEN_RESULTCONFIRM) && 2368 (owp->nfsow_clp->nfsc_flags & NFSCLFLAGS_GOTDELEG) && 2369 !error && dp == NULL) { 2370 do { 2371 ret = nfsrpc_openrpc(VFSTONFS(dvp->v_mount), dvp, 2372 np->n_fhp->nfh_fh, np->n_fhp->nfh_len, 2373 nfhp->nfh_fh, nfhp->nfh_len, 2374 (NFSV4OPEN_ACCESSWRITE | NFSV4OPEN_ACCESSREAD), op, 2375 name, namelen, &dp, 0, 0x0, cred, p, 0, 1); 2376 if (ret == NFSERR_DELAY) 2377 (void) nfs_catnap(PZERO, ret, "nfs_crt2"); 2378 } while (ret == NFSERR_DELAY); 2379 if (ret) { 2380 if (dp != NULL) { 2381 free(dp, M_NFSCLDELEG); 2382 dp = NULL; 2383 } 2384 if (ret == NFSERR_STALECLIENTID || 2385 ret == NFSERR_STALEDONTRECOVER || 2386 ret == NFSERR_BADSESSION) 2387 error = ret; 2388 } 2389 } 2390 nfscl_openrelease(nmp, op, error, newone); 2391 *unlockedp = 1; 2392 } 2393 if (nd->nd_repstat != 0 && error == 0) 2394 error = nd->nd_repstat; 2395 if (error == NFSERR_STALECLIENTID) 2396 nfscl_initiate_recovery(owp->nfsow_clp); 2397 nfsmout: 2398 if (!error) 2399 *dpp = dp; 2400 else if (dp != NULL) 2401 free(dp, M_NFSCLDELEG); 2402 m_freem(nd->nd_mrep); 2403 return (error); 2404 } 2405 2406 /* 2407 * Nfs remove rpc 2408 */ 2409 int 2410 nfsrpc_remove(vnode_t dvp, char *name, int namelen, vnode_t vp, 2411 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap, int *dattrflagp, 2412 void *dstuff) 2413 { 2414 u_int32_t *tl; 2415 struct nfsrv_descript nfsd, *nd = &nfsd; 2416 struct nfsnode *np; 2417 struct nfsmount *nmp; 2418 nfsv4stateid_t dstateid; 2419 int error, ret = 0, i; 2420 2421 *dattrflagp = 0; 2422 if (namelen > NFS_MAXNAMLEN) 2423 return (ENAMETOOLONG); 2424 nmp = VFSTONFS(dvp->v_mount); 2425 tryagain: 2426 if (NFSHASNFSV4(nmp) && ret == 0) { 2427 ret = nfscl_removedeleg(vp, p, &dstateid); 2428 if (ret == 1) { 2429 NFSCL_REQSTART(nd, NFSPROC_RETDELEGREMOVE, vp); 2430 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID + 2431 NFSX_UNSIGNED); 2432 if (NFSHASNFSV4N(nmp)) 2433 *tl++ = 0; 2434 else 2435 *tl++ = dstateid.seqid; 2436 *tl++ = dstateid.other[0]; 2437 *tl++ = dstateid.other[1]; 2438 *tl++ = dstateid.other[2]; 2439 *tl = txdr_unsigned(NFSV4OP_PUTFH); 2440 np = VTONFS(dvp); 2441 (void) nfsm_fhtom(nd, np->n_fhp->nfh_fh, 2442 np->n_fhp->nfh_len, 0); 2443 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2444 *tl = txdr_unsigned(NFSV4OP_REMOVE); 2445 } 2446 } else { 2447 ret = 0; 2448 } 2449 if (ret == 0) 2450 NFSCL_REQSTART(nd, NFSPROC_REMOVE, dvp); 2451 (void) nfsm_strtom(nd, name, namelen); 2452 error = nfscl_request(nd, dvp, p, cred, dstuff); 2453 if (error) 2454 return (error); 2455 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) { 2456 /* For NFSv4, parse out any Delereturn replies. */ 2457 if (ret > 0 && nd->nd_repstat != 0 && 2458 (nd->nd_flag & ND_NOMOREDATA)) { 2459 /* 2460 * If the Delegreturn failed, try again without 2461 * it. The server will Recall, as required. 2462 */ 2463 m_freem(nd->nd_mrep); 2464 goto tryagain; 2465 } 2466 for (i = 0; i < (ret * 2); i++) { 2467 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == 2468 ND_NFSV4) { 2469 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2470 if (*(tl + 1)) 2471 nd->nd_flag |= ND_NOMOREDATA; 2472 } 2473 } 2474 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 2475 } 2476 if (nd->nd_repstat && !error) 2477 error = nd->nd_repstat; 2478 nfsmout: 2479 m_freem(nd->nd_mrep); 2480 return (error); 2481 } 2482 2483 /* 2484 * Do an nfs rename rpc. 2485 */ 2486 int 2487 nfsrpc_rename(vnode_t fdvp, vnode_t fvp, char *fnameptr, int fnamelen, 2488 vnode_t tdvp, vnode_t tvp, char *tnameptr, int tnamelen, struct ucred *cred, 2489 NFSPROC_T *p, struct nfsvattr *fnap, struct nfsvattr *tnap, 2490 int *fattrflagp, int *tattrflagp, void *fstuff, void *tstuff) 2491 { 2492 u_int32_t *tl; 2493 struct nfsrv_descript nfsd, *nd = &nfsd; 2494 struct nfsmount *nmp; 2495 struct nfsnode *np; 2496 nfsattrbit_t attrbits; 2497 nfsv4stateid_t fdstateid, tdstateid; 2498 int error = 0, ret = 0, gottd = 0, gotfd = 0, i; 2499 2500 *fattrflagp = 0; 2501 *tattrflagp = 0; 2502 nmp = VFSTONFS(fdvp->v_mount); 2503 if (fnamelen > NFS_MAXNAMLEN || tnamelen > NFS_MAXNAMLEN) 2504 return (ENAMETOOLONG); 2505 tryagain: 2506 if (NFSHASNFSV4(nmp) && ret == 0) { 2507 ret = nfscl_renamedeleg(fvp, &fdstateid, &gotfd, tvp, 2508 &tdstateid, &gottd, p); 2509 if (gotfd && gottd) { 2510 NFSCL_REQSTART(nd, NFSPROC_RETDELEGRENAME2, fvp); 2511 } else if (gotfd) { 2512 NFSCL_REQSTART(nd, NFSPROC_RETDELEGRENAME1, fvp); 2513 } else if (gottd) { 2514 NFSCL_REQSTART(nd, NFSPROC_RETDELEGRENAME1, tvp); 2515 } 2516 if (gotfd) { 2517 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID); 2518 if (NFSHASNFSV4N(nmp)) 2519 *tl++ = 0; 2520 else 2521 *tl++ = fdstateid.seqid; 2522 *tl++ = fdstateid.other[0]; 2523 *tl++ = fdstateid.other[1]; 2524 *tl = fdstateid.other[2]; 2525 if (gottd) { 2526 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2527 *tl = txdr_unsigned(NFSV4OP_PUTFH); 2528 np = VTONFS(tvp); 2529 (void) nfsm_fhtom(nd, np->n_fhp->nfh_fh, 2530 np->n_fhp->nfh_len, 0); 2531 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2532 *tl = txdr_unsigned(NFSV4OP_DELEGRETURN); 2533 } 2534 } 2535 if (gottd) { 2536 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID); 2537 if (NFSHASNFSV4N(nmp)) 2538 *tl++ = 0; 2539 else 2540 *tl++ = tdstateid.seqid; 2541 *tl++ = tdstateid.other[0]; 2542 *tl++ = tdstateid.other[1]; 2543 *tl = tdstateid.other[2]; 2544 } 2545 if (ret > 0) { 2546 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2547 *tl = txdr_unsigned(NFSV4OP_PUTFH); 2548 np = VTONFS(fdvp); 2549 (void) nfsm_fhtom(nd, np->n_fhp->nfh_fh, 2550 np->n_fhp->nfh_len, 0); 2551 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2552 *tl = txdr_unsigned(NFSV4OP_SAVEFH); 2553 } 2554 } else { 2555 ret = 0; 2556 } 2557 if (ret == 0) 2558 NFSCL_REQSTART(nd, NFSPROC_RENAME, fdvp); 2559 if (nd->nd_flag & ND_NFSV4) { 2560 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2561 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2562 NFSWCCATTR_ATTRBIT(&attrbits); 2563 (void) nfsrv_putattrbit(nd, &attrbits); 2564 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2565 *tl = txdr_unsigned(NFSV4OP_PUTFH); 2566 (void) nfsm_fhtom(nd, VTONFS(tdvp)->n_fhp->nfh_fh, 2567 VTONFS(tdvp)->n_fhp->nfh_len, 0); 2568 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2569 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2570 (void) nfsrv_putattrbit(nd, &attrbits); 2571 nd->nd_flag |= ND_V4WCCATTR; 2572 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2573 *tl = txdr_unsigned(NFSV4OP_RENAME); 2574 } 2575 (void) nfsm_strtom(nd, fnameptr, fnamelen); 2576 if (!(nd->nd_flag & ND_NFSV4)) 2577 (void) nfsm_fhtom(nd, VTONFS(tdvp)->n_fhp->nfh_fh, 2578 VTONFS(tdvp)->n_fhp->nfh_len, 0); 2579 (void) nfsm_strtom(nd, tnameptr, tnamelen); 2580 error = nfscl_request(nd, fdvp, p, cred, fstuff); 2581 if (error) 2582 return (error); 2583 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) { 2584 /* For NFSv4, parse out any Delereturn replies. */ 2585 if (ret > 0 && nd->nd_repstat != 0 && 2586 (nd->nd_flag & ND_NOMOREDATA)) { 2587 /* 2588 * If the Delegreturn failed, try again without 2589 * it. The server will Recall, as required. 2590 */ 2591 m_freem(nd->nd_mrep); 2592 goto tryagain; 2593 } 2594 for (i = 0; i < (ret * 2); i++) { 2595 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == 2596 ND_NFSV4) { 2597 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2598 if (*(tl + 1)) { 2599 if (i == 0 && ret > 1) { 2600 /* 2601 * If the Delegreturn failed, try again 2602 * without it. The server will Recall, as 2603 * required. 2604 * If ret > 1, the first iteration of this 2605 * loop is the second DelegReturn result. 2606 */ 2607 m_freem(nd->nd_mrep); 2608 goto tryagain; 2609 } else { 2610 nd->nd_flag |= ND_NOMOREDATA; 2611 } 2612 } 2613 } 2614 } 2615 /* Now, the first wcc attribute reply. */ 2616 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == ND_NFSV4) { 2617 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2618 if (*(tl + 1)) 2619 nd->nd_flag |= ND_NOMOREDATA; 2620 } 2621 error = nfscl_wcc_data(nd, fdvp, fnap, fattrflagp, NULL, 2622 fstuff); 2623 /* and the second wcc attribute reply. */ 2624 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == ND_NFSV4 && 2625 !error) { 2626 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2627 if (*(tl + 1)) 2628 nd->nd_flag |= ND_NOMOREDATA; 2629 } 2630 if (!error) 2631 error = nfscl_wcc_data(nd, tdvp, tnap, tattrflagp, 2632 NULL, tstuff); 2633 } 2634 if (nd->nd_repstat && !error) 2635 error = nd->nd_repstat; 2636 nfsmout: 2637 m_freem(nd->nd_mrep); 2638 return (error); 2639 } 2640 2641 /* 2642 * nfs hard link create rpc 2643 */ 2644 int 2645 nfsrpc_link(vnode_t dvp, vnode_t vp, char *name, int namelen, 2646 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap, 2647 struct nfsvattr *nap, int *attrflagp, int *dattrflagp, void *dstuff) 2648 { 2649 u_int32_t *tl; 2650 struct nfsrv_descript nfsd, *nd = &nfsd; 2651 nfsattrbit_t attrbits; 2652 int error = 0; 2653 2654 *attrflagp = 0; 2655 *dattrflagp = 0; 2656 if (namelen > NFS_MAXNAMLEN) 2657 return (ENAMETOOLONG); 2658 NFSCL_REQSTART(nd, NFSPROC_LINK, vp); 2659 if (nd->nd_flag & ND_NFSV4) { 2660 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2661 *tl = txdr_unsigned(NFSV4OP_PUTFH); 2662 } 2663 (void) nfsm_fhtom(nd, VTONFS(dvp)->n_fhp->nfh_fh, 2664 VTONFS(dvp)->n_fhp->nfh_len, 0); 2665 if (nd->nd_flag & ND_NFSV4) { 2666 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2667 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2668 NFSWCCATTR_ATTRBIT(&attrbits); 2669 (void) nfsrv_putattrbit(nd, &attrbits); 2670 nd->nd_flag |= ND_V4WCCATTR; 2671 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2672 *tl = txdr_unsigned(NFSV4OP_LINK); 2673 } 2674 (void) nfsm_strtom(nd, name, namelen); 2675 error = nfscl_request(nd, vp, p, cred, dstuff); 2676 if (error) 2677 return (error); 2678 if (nd->nd_flag & ND_NFSV3) { 2679 error = nfscl_postop_attr(nd, nap, attrflagp, dstuff); 2680 if (!error) 2681 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, 2682 NULL, dstuff); 2683 } else if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == ND_NFSV4) { 2684 /* 2685 * First, parse out the PutFH and Getattr result. 2686 */ 2687 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2688 if (!(*(tl + 1))) 2689 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2690 if (*(tl + 1)) 2691 nd->nd_flag |= ND_NOMOREDATA; 2692 /* 2693 * Get the pre-op attributes. 2694 */ 2695 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 2696 } 2697 if (nd->nd_repstat && !error) 2698 error = nd->nd_repstat; 2699 nfsmout: 2700 m_freem(nd->nd_mrep); 2701 return (error); 2702 } 2703 2704 /* 2705 * nfs symbolic link create rpc 2706 */ 2707 int 2708 nfsrpc_symlink(vnode_t dvp, char *name, int namelen, const char *target, 2709 struct vattr *vap, struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap, 2710 struct nfsvattr *nnap, struct nfsfh **nfhpp, int *attrflagp, 2711 int *dattrflagp, void *dstuff) 2712 { 2713 u_int32_t *tl; 2714 struct nfsrv_descript nfsd, *nd = &nfsd; 2715 struct nfsmount *nmp; 2716 int slen, error = 0; 2717 2718 *nfhpp = NULL; 2719 *attrflagp = 0; 2720 *dattrflagp = 0; 2721 nmp = VFSTONFS(dvp->v_mount); 2722 slen = strlen(target); 2723 if (slen > NFS_MAXPATHLEN || namelen > NFS_MAXNAMLEN) 2724 return (ENAMETOOLONG); 2725 NFSCL_REQSTART(nd, NFSPROC_SYMLINK, dvp); 2726 if (nd->nd_flag & ND_NFSV4) { 2727 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2728 *tl = txdr_unsigned(NFLNK); 2729 (void) nfsm_strtom(nd, target, slen); 2730 } 2731 (void) nfsm_strtom(nd, name, namelen); 2732 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) 2733 nfscl_fillsattr(nd, vap, dvp, 0, 0); 2734 if (!(nd->nd_flag & ND_NFSV4)) 2735 (void) nfsm_strtom(nd, target, slen); 2736 if (nd->nd_flag & ND_NFSV2) 2737 nfscl_fillsattr(nd, vap, dvp, NFSSATTR_SIZENEG1, 0); 2738 error = nfscl_request(nd, dvp, p, cred, dstuff); 2739 if (error) 2740 return (error); 2741 if (nd->nd_flag & ND_NFSV4) 2742 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 2743 if ((nd->nd_flag & ND_NFSV3) && !error) { 2744 if (!nd->nd_repstat) 2745 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp); 2746 if (!error) 2747 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, 2748 NULL, dstuff); 2749 } 2750 if (nd->nd_repstat && !error) 2751 error = nd->nd_repstat; 2752 m_freem(nd->nd_mrep); 2753 /* 2754 * Kludge: Map EEXIST => 0 assuming that it is a reply to a retry. 2755 * Only do this if vfs.nfs.ignore_eexist is set. 2756 * Never do this for NFSv4.1 or later minor versions, since sessions 2757 * should guarantee "exactly once" RPC semantics. 2758 */ 2759 if (error == EEXIST && nfsignore_eexist != 0 && (!NFSHASNFSV4(nmp) || 2760 nmp->nm_minorvers == 0)) 2761 error = 0; 2762 return (error); 2763 } 2764 2765 /* 2766 * nfs make dir rpc 2767 */ 2768 int 2769 nfsrpc_mkdir(vnode_t dvp, char *name, int namelen, struct vattr *vap, 2770 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap, 2771 struct nfsvattr *nnap, struct nfsfh **nfhpp, int *attrflagp, 2772 int *dattrflagp, void *dstuff) 2773 { 2774 u_int32_t *tl; 2775 struct nfsrv_descript nfsd, *nd = &nfsd; 2776 nfsattrbit_t attrbits; 2777 int error = 0; 2778 struct nfsfh *fhp; 2779 struct nfsmount *nmp; 2780 2781 *nfhpp = NULL; 2782 *attrflagp = 0; 2783 *dattrflagp = 0; 2784 nmp = VFSTONFS(dvp->v_mount); 2785 fhp = VTONFS(dvp)->n_fhp; 2786 if (namelen > NFS_MAXNAMLEN) 2787 return (ENAMETOOLONG); 2788 NFSCL_REQSTART(nd, NFSPROC_MKDIR, dvp); 2789 if (nd->nd_flag & ND_NFSV4) { 2790 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2791 *tl = txdr_unsigned(NFDIR); 2792 } 2793 (void) nfsm_strtom(nd, name, namelen); 2794 nfscl_fillsattr(nd, vap, dvp, NFSSATTR_SIZENEG1, 0); 2795 if (nd->nd_flag & ND_NFSV4) { 2796 NFSGETATTR_ATTRBIT(&attrbits); 2797 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2798 *tl++ = txdr_unsigned(NFSV4OP_GETFH); 2799 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2800 (void) nfsrv_putattrbit(nd, &attrbits); 2801 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2802 *tl = txdr_unsigned(NFSV4OP_PUTFH); 2803 (void) nfsm_fhtom(nd, fhp->nfh_fh, fhp->nfh_len, 0); 2804 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2805 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2806 (void) nfsrv_putattrbit(nd, &attrbits); 2807 } 2808 error = nfscl_request(nd, dvp, p, cred, dstuff); 2809 if (error) 2810 return (error); 2811 if (nd->nd_flag & ND_NFSV4) 2812 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 2813 if (!nd->nd_repstat && !error) { 2814 if (nd->nd_flag & ND_NFSV4) { 2815 NFSM_DISSECT(tl, u_int32_t *, 5 * NFSX_UNSIGNED); 2816 error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL); 2817 } 2818 if (!error) 2819 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp); 2820 if (error == 0 && (nd->nd_flag & ND_NFSV4) != 0) { 2821 /* Get rid of the PutFH and Getattr status values. */ 2822 NFSM_DISSECT(tl, u_int32_t *, 4 * NFSX_UNSIGNED); 2823 /* Load the directory attributes. */ 2824 error = nfsm_loadattr(nd, dnap); 2825 if (error == 0) 2826 *dattrflagp = 1; 2827 } 2828 } 2829 if ((nd->nd_flag & ND_NFSV3) && !error) 2830 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 2831 if (nd->nd_repstat && !error) 2832 error = nd->nd_repstat; 2833 nfsmout: 2834 m_freem(nd->nd_mrep); 2835 /* 2836 * Kludge: Map EEXIST => 0 assuming that it is a reply to a retry. 2837 * Only do this if vfs.nfs.ignore_eexist is set. 2838 * Never do this for NFSv4.1 or later minor versions, since sessions 2839 * should guarantee "exactly once" RPC semantics. 2840 */ 2841 if (error == EEXIST && nfsignore_eexist != 0 && (!NFSHASNFSV4(nmp) || 2842 nmp->nm_minorvers == 0)) 2843 error = 0; 2844 return (error); 2845 } 2846 2847 /* 2848 * nfs remove directory call 2849 */ 2850 int 2851 nfsrpc_rmdir(vnode_t dvp, char *name, int namelen, struct ucred *cred, 2852 NFSPROC_T *p, struct nfsvattr *dnap, int *dattrflagp, void *dstuff) 2853 { 2854 struct nfsrv_descript nfsd, *nd = &nfsd; 2855 int error = 0; 2856 2857 *dattrflagp = 0; 2858 if (namelen > NFS_MAXNAMLEN) 2859 return (ENAMETOOLONG); 2860 NFSCL_REQSTART(nd, NFSPROC_RMDIR, dvp); 2861 (void) nfsm_strtom(nd, name, namelen); 2862 error = nfscl_request(nd, dvp, p, cred, dstuff); 2863 if (error) 2864 return (error); 2865 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) 2866 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 2867 if (nd->nd_repstat && !error) 2868 error = nd->nd_repstat; 2869 m_freem(nd->nd_mrep); 2870 /* 2871 * Kludge: Map ENOENT => 0 assuming that you have a reply to a retry. 2872 */ 2873 if (error == ENOENT) 2874 error = 0; 2875 return (error); 2876 } 2877 2878 /* 2879 * Readdir rpc. 2880 * Always returns with either uio_resid unchanged, if you are at the 2881 * end of the directory, or uio_resid == 0, with all DIRBLKSIZ chunks 2882 * filled in. 2883 * I felt this would allow caching of directory blocks more easily 2884 * than returning a pertially filled block. 2885 * Directory offset cookies: 2886 * Oh my, what to do with them... 2887 * I can think of three ways to deal with them: 2888 * 1 - have the layer above these RPCs maintain a map between logical 2889 * directory byte offsets and the NFS directory offset cookies 2890 * 2 - pass the opaque directory offset cookies up into userland 2891 * and let the libc functions deal with them, via the system call 2892 * 3 - return them to userland in the "struct dirent", so future versions 2893 * of libc can use them and do whatever is necessary to make things work 2894 * above these rpc calls, in the meantime 2895 * For now, I do #3 by "hiding" the directory offset cookies after the 2896 * d_name field in struct dirent. This is space inside d_reclen that 2897 * will be ignored by anything that doesn't know about them. 2898 * The directory offset cookies are filled in as the last 8 bytes of 2899 * each directory entry, after d_name. Someday, the userland libc 2900 * functions may be able to use these. In the meantime, it satisfies 2901 * OpenBSD's requirements for cookies being returned. 2902 * If expects the directory offset cookie for the read to be in uio_offset 2903 * and returns the one for the next entry after this directory block in 2904 * there, as well. 2905 */ 2906 int 2907 nfsrpc_readdir(vnode_t vp, struct uio *uiop, nfsuint64 *cookiep, 2908 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, 2909 int *eofp, void *stuff) 2910 { 2911 int len, left; 2912 struct dirent *dp = NULL; 2913 u_int32_t *tl; 2914 nfsquad_t cookie, ncookie; 2915 struct nfsmount *nmp = VFSTONFS(vp->v_mount); 2916 struct nfsnode *dnp = VTONFS(vp); 2917 struct nfsvattr nfsva; 2918 struct nfsrv_descript nfsd, *nd = &nfsd; 2919 int error = 0, tlen, more_dirs = 1, blksiz = 0, bigenough = 1; 2920 int reqsize, tryformoredirs = 1, readsize, eof = 0, gotmnton = 0; 2921 u_int64_t dotfileid, dotdotfileid = 0, fakefileno = UINT64_MAX; 2922 char *cp; 2923 nfsattrbit_t attrbits, dattrbits; 2924 u_int32_t rderr, *tl2 = NULL; 2925 size_t tresid; 2926 2927 KASSERT(uiop->uio_iovcnt == 1 && 2928 (uiop->uio_resid & (DIRBLKSIZ - 1)) == 0, 2929 ("nfs readdirrpc bad uio")); 2930 ncookie.lval[0] = ncookie.lval[1] = 0; 2931 /* 2932 * There is no point in reading a lot more than uio_resid, however 2933 * adding one additional DIRBLKSIZ makes sense. Since uio_resid 2934 * and nm_readdirsize are both exact multiples of DIRBLKSIZ, this 2935 * will never make readsize > nm_readdirsize. 2936 */ 2937 readsize = nmp->nm_readdirsize; 2938 if (readsize > uiop->uio_resid) 2939 readsize = uiop->uio_resid + DIRBLKSIZ; 2940 2941 *attrflagp = 0; 2942 if (eofp) 2943 *eofp = 0; 2944 tresid = uiop->uio_resid; 2945 cookie.lval[0] = cookiep->nfsuquad[0]; 2946 cookie.lval[1] = cookiep->nfsuquad[1]; 2947 nd->nd_mrep = NULL; 2948 2949 /* 2950 * For NFSv4, first create the "." and ".." entries. 2951 */ 2952 if (NFSHASNFSV4(nmp)) { 2953 reqsize = 6 * NFSX_UNSIGNED; 2954 NFSGETATTR_ATTRBIT(&dattrbits); 2955 NFSZERO_ATTRBIT(&attrbits); 2956 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_FILEID); 2957 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_TYPE); 2958 if (NFSISSET_ATTRBIT(&dnp->n_vattr.na_suppattr, 2959 NFSATTRBIT_MOUNTEDONFILEID)) { 2960 NFSSETBIT_ATTRBIT(&attrbits, 2961 NFSATTRBIT_MOUNTEDONFILEID); 2962 gotmnton = 1; 2963 } else { 2964 /* 2965 * Must fake it. Use the fileno, except when the 2966 * fsid is != to that of the directory. For that 2967 * case, generate a fake fileno that is not the same. 2968 */ 2969 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_FSID); 2970 gotmnton = 0; 2971 } 2972 2973 /* 2974 * Joy, oh joy. For V4 we get to hand craft '.' and '..'. 2975 */ 2976 if (uiop->uio_offset == 0) { 2977 NFSCL_REQSTART(nd, NFSPROC_LOOKUPP, vp); 2978 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2979 *tl++ = txdr_unsigned(NFSV4OP_GETFH); 2980 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2981 (void) nfsrv_putattrbit(nd, &attrbits); 2982 error = nfscl_request(nd, vp, p, cred, stuff); 2983 if (error) 2984 return (error); 2985 dotfileid = 0; /* Fake out the compiler. */ 2986 if ((nd->nd_flag & ND_NOMOREDATA) == 0) { 2987 error = nfsm_loadattr(nd, &nfsva); 2988 if (error != 0) 2989 goto nfsmout; 2990 dotfileid = nfsva.na_fileid; 2991 } 2992 if (nd->nd_repstat == 0) { 2993 NFSM_DISSECT(tl, u_int32_t *, 5 * NFSX_UNSIGNED); 2994 len = fxdr_unsigned(int, *(tl + 4)); 2995 if (len > 0 && len <= NFSX_V4FHMAX) 2996 error = nfsm_advance(nd, NFSM_RNDUP(len), -1); 2997 else 2998 error = EPERM; 2999 if (!error) { 3000 NFSM_DISSECT(tl, u_int32_t *, 2*NFSX_UNSIGNED); 3001 nfsva.na_mntonfileno = UINT64_MAX; 3002 error = nfsv4_loadattr(nd, NULL, &nfsva, NULL, 3003 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0, 3004 NULL, NULL, NULL, p, cred); 3005 if (error) { 3006 dotdotfileid = dotfileid; 3007 } else if (gotmnton) { 3008 if (nfsva.na_mntonfileno != UINT64_MAX) 3009 dotdotfileid = nfsva.na_mntonfileno; 3010 else 3011 dotdotfileid = nfsva.na_fileid; 3012 } else if (nfsva.na_filesid[0] == 3013 dnp->n_vattr.na_filesid[0] && 3014 nfsva.na_filesid[1] == 3015 dnp->n_vattr.na_filesid[1]) { 3016 dotdotfileid = nfsva.na_fileid; 3017 } else { 3018 do { 3019 fakefileno--; 3020 } while (fakefileno == 3021 nfsva.na_fileid); 3022 dotdotfileid = fakefileno; 3023 } 3024 } 3025 } else if (nd->nd_repstat == NFSERR_NOENT) { 3026 /* 3027 * Lookupp returns NFSERR_NOENT when we are 3028 * at the root, so just use the current dir. 3029 */ 3030 nd->nd_repstat = 0; 3031 dotdotfileid = dotfileid; 3032 } else { 3033 error = nd->nd_repstat; 3034 } 3035 m_freem(nd->nd_mrep); 3036 if (error) 3037 return (error); 3038 nd->nd_mrep = NULL; 3039 dp = (struct dirent *)uiop->uio_iov->iov_base; 3040 dp->d_pad0 = dp->d_pad1 = 0; 3041 dp->d_off = 0; 3042 dp->d_type = DT_DIR; 3043 dp->d_fileno = dotfileid; 3044 dp->d_namlen = 1; 3045 *((uint64_t *)dp->d_name) = 0; /* Zero pad it. */ 3046 dp->d_name[0] = '.'; 3047 dp->d_reclen = _GENERIC_DIRSIZ(dp) + NFSX_HYPER; 3048 /* 3049 * Just make these offset cookie 0. 3050 */ 3051 tl = (u_int32_t *)&dp->d_name[8]; 3052 *tl++ = 0; 3053 *tl = 0; 3054 blksiz += dp->d_reclen; 3055 uiop->uio_resid -= dp->d_reclen; 3056 uiop->uio_offset += dp->d_reclen; 3057 uiop->uio_iov->iov_base = 3058 (char *)uiop->uio_iov->iov_base + dp->d_reclen; 3059 uiop->uio_iov->iov_len -= dp->d_reclen; 3060 dp = (struct dirent *)uiop->uio_iov->iov_base; 3061 dp->d_pad0 = dp->d_pad1 = 0; 3062 dp->d_off = 0; 3063 dp->d_type = DT_DIR; 3064 dp->d_fileno = dotdotfileid; 3065 dp->d_namlen = 2; 3066 *((uint64_t *)dp->d_name) = 0; 3067 dp->d_name[0] = '.'; 3068 dp->d_name[1] = '.'; 3069 dp->d_reclen = _GENERIC_DIRSIZ(dp) + NFSX_HYPER; 3070 /* 3071 * Just make these offset cookie 0. 3072 */ 3073 tl = (u_int32_t *)&dp->d_name[8]; 3074 *tl++ = 0; 3075 *tl = 0; 3076 blksiz += dp->d_reclen; 3077 uiop->uio_resid -= dp->d_reclen; 3078 uiop->uio_offset += dp->d_reclen; 3079 uiop->uio_iov->iov_base = 3080 (char *)uiop->uio_iov->iov_base + dp->d_reclen; 3081 uiop->uio_iov->iov_len -= dp->d_reclen; 3082 } 3083 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_RDATTRERROR); 3084 } else { 3085 reqsize = 5 * NFSX_UNSIGNED; 3086 } 3087 3088 /* 3089 * Loop around doing readdir rpc's of size readsize. 3090 * The stopping criteria is EOF or buffer full. 3091 */ 3092 while (more_dirs && bigenough) { 3093 *attrflagp = 0; 3094 NFSCL_REQSTART(nd, NFSPROC_READDIR, vp); 3095 if (nd->nd_flag & ND_NFSV2) { 3096 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 3097 *tl++ = cookie.lval[1]; 3098 *tl = txdr_unsigned(readsize); 3099 } else { 3100 NFSM_BUILD(tl, u_int32_t *, reqsize); 3101 *tl++ = cookie.lval[0]; 3102 *tl++ = cookie.lval[1]; 3103 if (cookie.qval == 0) { 3104 *tl++ = 0; 3105 *tl++ = 0; 3106 } else { 3107 NFSLOCKNODE(dnp); 3108 *tl++ = dnp->n_cookieverf.nfsuquad[0]; 3109 *tl++ = dnp->n_cookieverf.nfsuquad[1]; 3110 NFSUNLOCKNODE(dnp); 3111 } 3112 if (nd->nd_flag & ND_NFSV4) { 3113 *tl++ = txdr_unsigned(readsize); 3114 *tl = txdr_unsigned(readsize); 3115 (void) nfsrv_putattrbit(nd, &attrbits); 3116 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 3117 *tl = txdr_unsigned(NFSV4OP_GETATTR); 3118 (void) nfsrv_putattrbit(nd, &dattrbits); 3119 } else { 3120 *tl = txdr_unsigned(readsize); 3121 } 3122 } 3123 error = nfscl_request(nd, vp, p, cred, stuff); 3124 if (error) 3125 return (error); 3126 if (!(nd->nd_flag & ND_NFSV2)) { 3127 if (nd->nd_flag & ND_NFSV3) 3128 error = nfscl_postop_attr(nd, nap, attrflagp, 3129 stuff); 3130 if (!nd->nd_repstat && !error) { 3131 NFSM_DISSECT(tl, u_int32_t *, NFSX_HYPER); 3132 NFSLOCKNODE(dnp); 3133 dnp->n_cookieverf.nfsuquad[0] = *tl++; 3134 dnp->n_cookieverf.nfsuquad[1] = *tl; 3135 NFSUNLOCKNODE(dnp); 3136 } 3137 } 3138 if (nd->nd_repstat || error) { 3139 if (!error) 3140 error = nd->nd_repstat; 3141 goto nfsmout; 3142 } 3143 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 3144 more_dirs = fxdr_unsigned(int, *tl); 3145 if (!more_dirs) 3146 tryformoredirs = 0; 3147 3148 /* loop through the dir entries, doctoring them to 4bsd form */ 3149 while (more_dirs && bigenough) { 3150 if (nd->nd_flag & ND_NFSV4) { 3151 NFSM_DISSECT(tl, u_int32_t *, 3*NFSX_UNSIGNED); 3152 ncookie.lval[0] = *tl++; 3153 ncookie.lval[1] = *tl++; 3154 len = fxdr_unsigned(int, *tl); 3155 } else if (nd->nd_flag & ND_NFSV3) { 3156 NFSM_DISSECT(tl, u_int32_t *, 3*NFSX_UNSIGNED); 3157 nfsva.na_fileid = fxdr_hyper(tl); 3158 tl += 2; 3159 len = fxdr_unsigned(int, *tl); 3160 } else { 3161 NFSM_DISSECT(tl, u_int32_t *, 2*NFSX_UNSIGNED); 3162 nfsva.na_fileid = fxdr_unsigned(uint64_t, 3163 *tl++); 3164 len = fxdr_unsigned(int, *tl); 3165 } 3166 if (len <= 0 || len > NFS_MAXNAMLEN) { 3167 error = EBADRPC; 3168 goto nfsmout; 3169 } 3170 tlen = roundup2(len, 8); 3171 if (tlen == len) 3172 tlen += 8; /* To ensure null termination. */ 3173 left = DIRBLKSIZ - blksiz; 3174 if (_GENERIC_DIRLEN(len) + NFSX_HYPER > left) { 3175 NFSBZERO(uiop->uio_iov->iov_base, left); 3176 dp->d_reclen += left; 3177 uiop->uio_iov->iov_base = 3178 (char *)uiop->uio_iov->iov_base + left; 3179 uiop->uio_iov->iov_len -= left; 3180 uiop->uio_resid -= left; 3181 uiop->uio_offset += left; 3182 blksiz = 0; 3183 } 3184 if (_GENERIC_DIRLEN(len) + NFSX_HYPER > 3185 uiop->uio_resid) 3186 bigenough = 0; 3187 if (bigenough) { 3188 dp = (struct dirent *)uiop->uio_iov->iov_base; 3189 dp->d_pad0 = dp->d_pad1 = 0; 3190 dp->d_off = 0; 3191 dp->d_namlen = len; 3192 dp->d_reclen = _GENERIC_DIRLEN(len) + 3193 NFSX_HYPER; 3194 dp->d_type = DT_UNKNOWN; 3195 blksiz += dp->d_reclen; 3196 if (blksiz == DIRBLKSIZ) 3197 blksiz = 0; 3198 uiop->uio_resid -= DIRHDSIZ; 3199 uiop->uio_offset += DIRHDSIZ; 3200 uiop->uio_iov->iov_base = 3201 (char *)uiop->uio_iov->iov_base + DIRHDSIZ; 3202 uiop->uio_iov->iov_len -= DIRHDSIZ; 3203 error = nfsm_mbufuio(nd, uiop, len); 3204 if (error) 3205 goto nfsmout; 3206 cp = uiop->uio_iov->iov_base; 3207 tlen -= len; 3208 NFSBZERO(cp, tlen); 3209 cp += tlen; /* points to cookie storage */ 3210 tl2 = (u_int32_t *)cp; 3211 uiop->uio_iov->iov_base = 3212 (char *)uiop->uio_iov->iov_base + tlen + 3213 NFSX_HYPER; 3214 uiop->uio_iov->iov_len -= tlen + NFSX_HYPER; 3215 uiop->uio_resid -= tlen + NFSX_HYPER; 3216 uiop->uio_offset += (tlen + NFSX_HYPER); 3217 } else { 3218 error = nfsm_advance(nd, NFSM_RNDUP(len), -1); 3219 if (error) 3220 goto nfsmout; 3221 } 3222 if (nd->nd_flag & ND_NFSV4) { 3223 rderr = 0; 3224 nfsva.na_mntonfileno = UINT64_MAX; 3225 error = nfsv4_loadattr(nd, NULL, &nfsva, NULL, 3226 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0, 3227 NULL, NULL, &rderr, p, cred); 3228 if (error) 3229 goto nfsmout; 3230 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 3231 } else if (nd->nd_flag & ND_NFSV3) { 3232 NFSM_DISSECT(tl, u_int32_t *, 3*NFSX_UNSIGNED); 3233 ncookie.lval[0] = *tl++; 3234 ncookie.lval[1] = *tl++; 3235 } else { 3236 NFSM_DISSECT(tl, u_int32_t *, 2*NFSX_UNSIGNED); 3237 ncookie.lval[0] = 0; 3238 ncookie.lval[1] = *tl++; 3239 } 3240 if (bigenough) { 3241 if (nd->nd_flag & ND_NFSV4) { 3242 if (rderr) { 3243 dp->d_fileno = 0; 3244 } else { 3245 if (gotmnton) { 3246 if (nfsva.na_mntonfileno != UINT64_MAX) 3247 dp->d_fileno = nfsva.na_mntonfileno; 3248 else 3249 dp->d_fileno = nfsva.na_fileid; 3250 } else if (nfsva.na_filesid[0] == 3251 dnp->n_vattr.na_filesid[0] && 3252 nfsva.na_filesid[1] == 3253 dnp->n_vattr.na_filesid[1]) { 3254 dp->d_fileno = nfsva.na_fileid; 3255 } else { 3256 do { 3257 fakefileno--; 3258 } while (fakefileno == 3259 nfsva.na_fileid); 3260 dp->d_fileno = fakefileno; 3261 } 3262 dp->d_type = vtonfs_dtype(nfsva.na_type); 3263 } 3264 } else { 3265 dp->d_fileno = nfsva.na_fileid; 3266 } 3267 *tl2++ = cookiep->nfsuquad[0] = cookie.lval[0] = 3268 ncookie.lval[0]; 3269 *tl2 = cookiep->nfsuquad[1] = cookie.lval[1] = 3270 ncookie.lval[1]; 3271 } 3272 more_dirs = fxdr_unsigned(int, *tl); 3273 } 3274 /* 3275 * If at end of rpc data, get the eof boolean 3276 */ 3277 if (!more_dirs) { 3278 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 3279 eof = fxdr_unsigned(int, *tl); 3280 if (tryformoredirs) 3281 more_dirs = !eof; 3282 if (nd->nd_flag & ND_NFSV4) { 3283 error = nfscl_postop_attr(nd, nap, attrflagp, 3284 stuff); 3285 if (error) 3286 goto nfsmout; 3287 } 3288 } 3289 m_freem(nd->nd_mrep); 3290 nd->nd_mrep = NULL; 3291 } 3292 /* 3293 * Fill last record, iff any, out to a multiple of DIRBLKSIZ 3294 * by increasing d_reclen for the last record. 3295 */ 3296 if (blksiz > 0) { 3297 left = DIRBLKSIZ - blksiz; 3298 NFSBZERO(uiop->uio_iov->iov_base, left); 3299 dp->d_reclen += left; 3300 uiop->uio_iov->iov_base = (char *)uiop->uio_iov->iov_base + 3301 left; 3302 uiop->uio_iov->iov_len -= left; 3303 uiop->uio_resid -= left; 3304 uiop->uio_offset += left; 3305 } 3306 3307 /* 3308 * If returning no data, assume end of file. 3309 * If not bigenough, return not end of file, since you aren't 3310 * returning all the data 3311 * Otherwise, return the eof flag from the server. 3312 */ 3313 if (eofp) { 3314 if (tresid == ((size_t)(uiop->uio_resid))) 3315 *eofp = 1; 3316 else if (!bigenough) 3317 *eofp = 0; 3318 else 3319 *eofp = eof; 3320 } 3321 3322 /* 3323 * Add extra empty records to any remaining DIRBLKSIZ chunks. 3324 */ 3325 while (uiop->uio_resid > 0 && uiop->uio_resid != tresid) { 3326 dp = (struct dirent *)uiop->uio_iov->iov_base; 3327 NFSBZERO(dp, DIRBLKSIZ); 3328 dp->d_type = DT_UNKNOWN; 3329 tl = (u_int32_t *)&dp->d_name[4]; 3330 *tl++ = cookie.lval[0]; 3331 *tl = cookie.lval[1]; 3332 dp->d_reclen = DIRBLKSIZ; 3333 uiop->uio_iov->iov_base = (char *)uiop->uio_iov->iov_base + 3334 DIRBLKSIZ; 3335 uiop->uio_iov->iov_len -= DIRBLKSIZ; 3336 uiop->uio_resid -= DIRBLKSIZ; 3337 uiop->uio_offset += DIRBLKSIZ; 3338 } 3339 3340 nfsmout: 3341 if (nd->nd_mrep != NULL) 3342 m_freem(nd->nd_mrep); 3343 return (error); 3344 } 3345 3346 #ifndef APPLE 3347 /* 3348 * NFS V3 readdir plus RPC. Used in place of nfsrpc_readdir(). 3349 * (Also used for NFS V4 when mount flag set.) 3350 * (ditto above w.r.t. multiple of DIRBLKSIZ, etc.) 3351 */ 3352 int 3353 nfsrpc_readdirplus(vnode_t vp, struct uio *uiop, nfsuint64 *cookiep, 3354 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, 3355 int *eofp, void *stuff) 3356 { 3357 int len, left; 3358 struct dirent *dp = NULL; 3359 u_int32_t *tl; 3360 vnode_t newvp = NULLVP; 3361 struct nfsrv_descript nfsd, *nd = &nfsd; 3362 struct nameidata nami, *ndp = &nami; 3363 struct componentname *cnp = &ndp->ni_cnd; 3364 struct nfsmount *nmp = VFSTONFS(vp->v_mount); 3365 struct nfsnode *dnp = VTONFS(vp), *np; 3366 struct nfsvattr nfsva; 3367 struct nfsfh *nfhp; 3368 nfsquad_t cookie, ncookie; 3369 int error = 0, tlen, more_dirs = 1, blksiz = 0, bigenough = 1; 3370 int attrflag, tryformoredirs = 1, eof = 0, gotmnton = 0; 3371 int isdotdot = 0, unlocknewvp = 0; 3372 u_int64_t dotfileid, dotdotfileid = 0, fakefileno = UINT64_MAX; 3373 u_int64_t fileno = 0; 3374 char *cp; 3375 nfsattrbit_t attrbits, dattrbits; 3376 size_t tresid; 3377 u_int32_t *tl2 = NULL, rderr; 3378 struct timespec dctime; 3379 3380 KASSERT(uiop->uio_iovcnt == 1 && 3381 (uiop->uio_resid & (DIRBLKSIZ - 1)) == 0, 3382 ("nfs readdirplusrpc bad uio")); 3383 ncookie.lval[0] = ncookie.lval[1] = 0; 3384 timespecclear(&dctime); 3385 *attrflagp = 0; 3386 if (eofp != NULL) 3387 *eofp = 0; 3388 ndp->ni_dvp = vp; 3389 nd->nd_mrep = NULL; 3390 cookie.lval[0] = cookiep->nfsuquad[0]; 3391 cookie.lval[1] = cookiep->nfsuquad[1]; 3392 tresid = uiop->uio_resid; 3393 3394 /* 3395 * For NFSv4, first create the "." and ".." entries. 3396 */ 3397 if (NFSHASNFSV4(nmp)) { 3398 NFSGETATTR_ATTRBIT(&dattrbits); 3399 NFSZERO_ATTRBIT(&attrbits); 3400 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_FILEID); 3401 if (NFSISSET_ATTRBIT(&dnp->n_vattr.na_suppattr, 3402 NFSATTRBIT_MOUNTEDONFILEID)) { 3403 NFSSETBIT_ATTRBIT(&attrbits, 3404 NFSATTRBIT_MOUNTEDONFILEID); 3405 gotmnton = 1; 3406 } else { 3407 /* 3408 * Must fake it. Use the fileno, except when the 3409 * fsid is != to that of the directory. For that 3410 * case, generate a fake fileno that is not the same. 3411 */ 3412 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_FSID); 3413 gotmnton = 0; 3414 } 3415 3416 /* 3417 * Joy, oh joy. For V4 we get to hand craft '.' and '..'. 3418 */ 3419 if (uiop->uio_offset == 0) { 3420 NFSCL_REQSTART(nd, NFSPROC_LOOKUPP, vp); 3421 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 3422 *tl++ = txdr_unsigned(NFSV4OP_GETFH); 3423 *tl = txdr_unsigned(NFSV4OP_GETATTR); 3424 (void) nfsrv_putattrbit(nd, &attrbits); 3425 error = nfscl_request(nd, vp, p, cred, stuff); 3426 if (error) 3427 return (error); 3428 dotfileid = 0; /* Fake out the compiler. */ 3429 if ((nd->nd_flag & ND_NOMOREDATA) == 0) { 3430 error = nfsm_loadattr(nd, &nfsva); 3431 if (error != 0) 3432 goto nfsmout; 3433 dctime = nfsva.na_ctime; 3434 dotfileid = nfsva.na_fileid; 3435 } 3436 if (nd->nd_repstat == 0) { 3437 NFSM_DISSECT(tl, u_int32_t *, 5 * NFSX_UNSIGNED); 3438 len = fxdr_unsigned(int, *(tl + 4)); 3439 if (len > 0 && len <= NFSX_V4FHMAX) 3440 error = nfsm_advance(nd, NFSM_RNDUP(len), -1); 3441 else 3442 error = EPERM; 3443 if (!error) { 3444 NFSM_DISSECT(tl, u_int32_t *, 2*NFSX_UNSIGNED); 3445 nfsva.na_mntonfileno = UINT64_MAX; 3446 error = nfsv4_loadattr(nd, NULL, &nfsva, NULL, 3447 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0, 3448 NULL, NULL, NULL, p, cred); 3449 if (error) { 3450 dotdotfileid = dotfileid; 3451 } else if (gotmnton) { 3452 if (nfsva.na_mntonfileno != UINT64_MAX) 3453 dotdotfileid = nfsva.na_mntonfileno; 3454 else 3455 dotdotfileid = nfsva.na_fileid; 3456 } else if (nfsva.na_filesid[0] == 3457 dnp->n_vattr.na_filesid[0] && 3458 nfsva.na_filesid[1] == 3459 dnp->n_vattr.na_filesid[1]) { 3460 dotdotfileid = nfsva.na_fileid; 3461 } else { 3462 do { 3463 fakefileno--; 3464 } while (fakefileno == 3465 nfsva.na_fileid); 3466 dotdotfileid = fakefileno; 3467 } 3468 } 3469 } else if (nd->nd_repstat == NFSERR_NOENT) { 3470 /* 3471 * Lookupp returns NFSERR_NOENT when we are 3472 * at the root, so just use the current dir. 3473 */ 3474 nd->nd_repstat = 0; 3475 dotdotfileid = dotfileid; 3476 } else { 3477 error = nd->nd_repstat; 3478 } 3479 m_freem(nd->nd_mrep); 3480 if (error) 3481 return (error); 3482 nd->nd_mrep = NULL; 3483 dp = (struct dirent *)uiop->uio_iov->iov_base; 3484 dp->d_pad0 = dp->d_pad1 = 0; 3485 dp->d_off = 0; 3486 dp->d_type = DT_DIR; 3487 dp->d_fileno = dotfileid; 3488 dp->d_namlen = 1; 3489 *((uint64_t *)dp->d_name) = 0; /* Zero pad it. */ 3490 dp->d_name[0] = '.'; 3491 dp->d_reclen = _GENERIC_DIRSIZ(dp) + NFSX_HYPER; 3492 /* 3493 * Just make these offset cookie 0. 3494 */ 3495 tl = (u_int32_t *)&dp->d_name[8]; 3496 *tl++ = 0; 3497 *tl = 0; 3498 blksiz += dp->d_reclen; 3499 uiop->uio_resid -= dp->d_reclen; 3500 uiop->uio_offset += dp->d_reclen; 3501 uiop->uio_iov->iov_base = 3502 (char *)uiop->uio_iov->iov_base + dp->d_reclen; 3503 uiop->uio_iov->iov_len -= dp->d_reclen; 3504 dp = (struct dirent *)uiop->uio_iov->iov_base; 3505 dp->d_pad0 = dp->d_pad1 = 0; 3506 dp->d_off = 0; 3507 dp->d_type = DT_DIR; 3508 dp->d_fileno = dotdotfileid; 3509 dp->d_namlen = 2; 3510 *((uint64_t *)dp->d_name) = 0; 3511 dp->d_name[0] = '.'; 3512 dp->d_name[1] = '.'; 3513 dp->d_reclen = _GENERIC_DIRSIZ(dp) + NFSX_HYPER; 3514 /* 3515 * Just make these offset cookie 0. 3516 */ 3517 tl = (u_int32_t *)&dp->d_name[8]; 3518 *tl++ = 0; 3519 *tl = 0; 3520 blksiz += dp->d_reclen; 3521 uiop->uio_resid -= dp->d_reclen; 3522 uiop->uio_offset += dp->d_reclen; 3523 uiop->uio_iov->iov_base = 3524 (char *)uiop->uio_iov->iov_base + dp->d_reclen; 3525 uiop->uio_iov->iov_len -= dp->d_reclen; 3526 } 3527 NFSREADDIRPLUS_ATTRBIT(&attrbits); 3528 if (gotmnton) 3529 NFSSETBIT_ATTRBIT(&attrbits, 3530 NFSATTRBIT_MOUNTEDONFILEID); 3531 } 3532 3533 /* 3534 * Loop around doing readdir rpc's of size nm_readdirsize. 3535 * The stopping criteria is EOF or buffer full. 3536 */ 3537 while (more_dirs && bigenough) { 3538 *attrflagp = 0; 3539 NFSCL_REQSTART(nd, NFSPROC_READDIRPLUS, vp); 3540 NFSM_BUILD(tl, u_int32_t *, 6 * NFSX_UNSIGNED); 3541 *tl++ = cookie.lval[0]; 3542 *tl++ = cookie.lval[1]; 3543 if (cookie.qval == 0) { 3544 *tl++ = 0; 3545 *tl++ = 0; 3546 } else { 3547 NFSLOCKNODE(dnp); 3548 *tl++ = dnp->n_cookieverf.nfsuquad[0]; 3549 *tl++ = dnp->n_cookieverf.nfsuquad[1]; 3550 NFSUNLOCKNODE(dnp); 3551 } 3552 *tl++ = txdr_unsigned(nmp->nm_readdirsize); 3553 *tl = txdr_unsigned(nmp->nm_readdirsize); 3554 if (nd->nd_flag & ND_NFSV4) { 3555 (void) nfsrv_putattrbit(nd, &attrbits); 3556 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 3557 *tl = txdr_unsigned(NFSV4OP_GETATTR); 3558 (void) nfsrv_putattrbit(nd, &dattrbits); 3559 } 3560 error = nfscl_request(nd, vp, p, cred, stuff); 3561 if (error) 3562 return (error); 3563 if (nd->nd_flag & ND_NFSV3) 3564 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 3565 if (nd->nd_repstat || error) { 3566 if (!error) 3567 error = nd->nd_repstat; 3568 goto nfsmout; 3569 } 3570 if ((nd->nd_flag & ND_NFSV3) != 0 && *attrflagp != 0) 3571 dctime = nap->na_ctime; 3572 NFSM_DISSECT(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 3573 NFSLOCKNODE(dnp); 3574 dnp->n_cookieverf.nfsuquad[0] = *tl++; 3575 dnp->n_cookieverf.nfsuquad[1] = *tl++; 3576 NFSUNLOCKNODE(dnp); 3577 more_dirs = fxdr_unsigned(int, *tl); 3578 if (!more_dirs) 3579 tryformoredirs = 0; 3580 3581 /* loop through the dir entries, doctoring them to 4bsd form */ 3582 while (more_dirs && bigenough) { 3583 NFSM_DISSECT(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 3584 if (nd->nd_flag & ND_NFSV4) { 3585 ncookie.lval[0] = *tl++; 3586 ncookie.lval[1] = *tl++; 3587 } else { 3588 fileno = fxdr_hyper(tl); 3589 tl += 2; 3590 } 3591 len = fxdr_unsigned(int, *tl); 3592 if (len <= 0 || len > NFS_MAXNAMLEN) { 3593 error = EBADRPC; 3594 goto nfsmout; 3595 } 3596 tlen = roundup2(len, 8); 3597 if (tlen == len) 3598 tlen += 8; /* To ensure null termination. */ 3599 left = DIRBLKSIZ - blksiz; 3600 if (_GENERIC_DIRLEN(len) + NFSX_HYPER > left) { 3601 NFSBZERO(uiop->uio_iov->iov_base, left); 3602 dp->d_reclen += left; 3603 uiop->uio_iov->iov_base = 3604 (char *)uiop->uio_iov->iov_base + left; 3605 uiop->uio_iov->iov_len -= left; 3606 uiop->uio_resid -= left; 3607 uiop->uio_offset += left; 3608 blksiz = 0; 3609 } 3610 if (_GENERIC_DIRLEN(len) + NFSX_HYPER > 3611 uiop->uio_resid) 3612 bigenough = 0; 3613 if (bigenough) { 3614 dp = (struct dirent *)uiop->uio_iov->iov_base; 3615 dp->d_pad0 = dp->d_pad1 = 0; 3616 dp->d_off = 0; 3617 dp->d_namlen = len; 3618 dp->d_reclen = _GENERIC_DIRLEN(len) + 3619 NFSX_HYPER; 3620 dp->d_type = DT_UNKNOWN; 3621 blksiz += dp->d_reclen; 3622 if (blksiz == DIRBLKSIZ) 3623 blksiz = 0; 3624 uiop->uio_resid -= DIRHDSIZ; 3625 uiop->uio_offset += DIRHDSIZ; 3626 uiop->uio_iov->iov_base = 3627 (char *)uiop->uio_iov->iov_base + DIRHDSIZ; 3628 uiop->uio_iov->iov_len -= DIRHDSIZ; 3629 cnp->cn_nameptr = uiop->uio_iov->iov_base; 3630 cnp->cn_namelen = len; 3631 NFSCNHASHZERO(cnp); 3632 error = nfsm_mbufuio(nd, uiop, len); 3633 if (error) 3634 goto nfsmout; 3635 cp = uiop->uio_iov->iov_base; 3636 tlen -= len; 3637 NFSBZERO(cp, tlen); 3638 cp += tlen; /* points to cookie storage */ 3639 tl2 = (u_int32_t *)cp; 3640 if (len == 2 && cnp->cn_nameptr[0] == '.' && 3641 cnp->cn_nameptr[1] == '.') 3642 isdotdot = 1; 3643 else 3644 isdotdot = 0; 3645 uiop->uio_iov->iov_base = 3646 (char *)uiop->uio_iov->iov_base + tlen + 3647 NFSX_HYPER; 3648 uiop->uio_iov->iov_len -= tlen + NFSX_HYPER; 3649 uiop->uio_resid -= tlen + NFSX_HYPER; 3650 uiop->uio_offset += (tlen + NFSX_HYPER); 3651 } else { 3652 error = nfsm_advance(nd, NFSM_RNDUP(len), -1); 3653 if (error) 3654 goto nfsmout; 3655 } 3656 nfhp = NULL; 3657 if (nd->nd_flag & ND_NFSV3) { 3658 NFSM_DISSECT(tl, u_int32_t *, 3*NFSX_UNSIGNED); 3659 ncookie.lval[0] = *tl++; 3660 ncookie.lval[1] = *tl++; 3661 attrflag = fxdr_unsigned(int, *tl); 3662 if (attrflag) { 3663 error = nfsm_loadattr(nd, &nfsva); 3664 if (error) 3665 goto nfsmout; 3666 } 3667 NFSM_DISSECT(tl,u_int32_t *,NFSX_UNSIGNED); 3668 if (*tl) { 3669 error = nfsm_getfh(nd, &nfhp); 3670 if (error) 3671 goto nfsmout; 3672 } 3673 if (!attrflag && nfhp != NULL) { 3674 free(nfhp, M_NFSFH); 3675 nfhp = NULL; 3676 } 3677 } else { 3678 rderr = 0; 3679 nfsva.na_mntonfileno = 0xffffffff; 3680 error = nfsv4_loadattr(nd, NULL, &nfsva, &nfhp, 3681 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0, 3682 NULL, NULL, &rderr, p, cred); 3683 if (error) 3684 goto nfsmout; 3685 } 3686 3687 if (bigenough) { 3688 if (nd->nd_flag & ND_NFSV4) { 3689 if (rderr) { 3690 dp->d_fileno = 0; 3691 } else if (gotmnton) { 3692 if (nfsva.na_mntonfileno != 0xffffffff) 3693 dp->d_fileno = nfsva.na_mntonfileno; 3694 else 3695 dp->d_fileno = nfsva.na_fileid; 3696 } else if (nfsva.na_filesid[0] == 3697 dnp->n_vattr.na_filesid[0] && 3698 nfsva.na_filesid[1] == 3699 dnp->n_vattr.na_filesid[1]) { 3700 dp->d_fileno = nfsva.na_fileid; 3701 } else { 3702 do { 3703 fakefileno--; 3704 } while (fakefileno == 3705 nfsva.na_fileid); 3706 dp->d_fileno = fakefileno; 3707 } 3708 } else { 3709 dp->d_fileno = fileno; 3710 } 3711 *tl2++ = cookiep->nfsuquad[0] = cookie.lval[0] = 3712 ncookie.lval[0]; 3713 *tl2 = cookiep->nfsuquad[1] = cookie.lval[1] = 3714 ncookie.lval[1]; 3715 3716 if (nfhp != NULL) { 3717 if (NFSRV_CMPFH(nfhp->nfh_fh, nfhp->nfh_len, 3718 dnp->n_fhp->nfh_fh, dnp->n_fhp->nfh_len)) { 3719 VREF(vp); 3720 newvp = vp; 3721 unlocknewvp = 0; 3722 free(nfhp, M_NFSFH); 3723 np = dnp; 3724 } else if (isdotdot != 0) { 3725 /* 3726 * Skip doing a nfscl_nget() call for "..". 3727 * There's a race between acquiring the nfs 3728 * node here and lookups that look for the 3729 * directory being read (in the parent). 3730 * It would try to get a lock on ".." here, 3731 * owning the lock on the directory being 3732 * read. Lookup will hold the lock on ".." 3733 * and try to acquire the lock on the 3734 * directory being read. 3735 * If the directory is unlocked/relocked, 3736 * then there is a LOR with the buflock 3737 * vp is relocked. 3738 */ 3739 free(nfhp, M_NFSFH); 3740 } else { 3741 error = nfscl_nget(vp->v_mount, vp, 3742 nfhp, cnp, p, &np, NULL, LK_EXCLUSIVE); 3743 if (!error) { 3744 newvp = NFSTOV(np); 3745 unlocknewvp = 1; 3746 } 3747 } 3748 nfhp = NULL; 3749 if (newvp != NULLVP) { 3750 error = nfscl_loadattrcache(&newvp, 3751 &nfsva, NULL, NULL, 0, 0); 3752 if (error) { 3753 if (unlocknewvp) 3754 vput(newvp); 3755 else 3756 vrele(newvp); 3757 goto nfsmout; 3758 } 3759 dp->d_type = 3760 vtonfs_dtype(np->n_vattr.na_type); 3761 ndp->ni_vp = newvp; 3762 NFSCNHASH(cnp, HASHINIT); 3763 if (cnp->cn_namelen <= NCHNAMLEN && 3764 ndp->ni_dvp != ndp->ni_vp && 3765 (newvp->v_type != VDIR || 3766 dctime.tv_sec != 0)) { 3767 cache_enter_time(ndp->ni_dvp, 3768 ndp->ni_vp, cnp, 3769 &nfsva.na_ctime, 3770 newvp->v_type != VDIR ? NULL : 3771 &dctime); 3772 } 3773 if (unlocknewvp) 3774 vput(newvp); 3775 else 3776 vrele(newvp); 3777 newvp = NULLVP; 3778 } 3779 } 3780 } else if (nfhp != NULL) { 3781 free(nfhp, M_NFSFH); 3782 } 3783 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 3784 more_dirs = fxdr_unsigned(int, *tl); 3785 } 3786 /* 3787 * If at end of rpc data, get the eof boolean 3788 */ 3789 if (!more_dirs) { 3790 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 3791 eof = fxdr_unsigned(int, *tl); 3792 if (tryformoredirs) 3793 more_dirs = !eof; 3794 if (nd->nd_flag & ND_NFSV4) { 3795 error = nfscl_postop_attr(nd, nap, attrflagp, 3796 stuff); 3797 if (error) 3798 goto nfsmout; 3799 } 3800 } 3801 m_freem(nd->nd_mrep); 3802 nd->nd_mrep = NULL; 3803 } 3804 /* 3805 * Fill last record, iff any, out to a multiple of DIRBLKSIZ 3806 * by increasing d_reclen for the last record. 3807 */ 3808 if (blksiz > 0) { 3809 left = DIRBLKSIZ - blksiz; 3810 NFSBZERO(uiop->uio_iov->iov_base, left); 3811 dp->d_reclen += left; 3812 uiop->uio_iov->iov_base = (char *)uiop->uio_iov->iov_base + 3813 left; 3814 uiop->uio_iov->iov_len -= left; 3815 uiop->uio_resid -= left; 3816 uiop->uio_offset += left; 3817 } 3818 3819 /* 3820 * If returning no data, assume end of file. 3821 * If not bigenough, return not end of file, since you aren't 3822 * returning all the data 3823 * Otherwise, return the eof flag from the server. 3824 */ 3825 if (eofp != NULL) { 3826 if (tresid == uiop->uio_resid) 3827 *eofp = 1; 3828 else if (!bigenough) 3829 *eofp = 0; 3830 else 3831 *eofp = eof; 3832 } 3833 3834 /* 3835 * Add extra empty records to any remaining DIRBLKSIZ chunks. 3836 */ 3837 while (uiop->uio_resid > 0 && uiop->uio_resid != tresid) { 3838 dp = (struct dirent *)uiop->uio_iov->iov_base; 3839 NFSBZERO(dp, DIRBLKSIZ); 3840 dp->d_type = DT_UNKNOWN; 3841 tl = (u_int32_t *)&dp->d_name[4]; 3842 *tl++ = cookie.lval[0]; 3843 *tl = cookie.lval[1]; 3844 dp->d_reclen = DIRBLKSIZ; 3845 uiop->uio_iov->iov_base = (char *)uiop->uio_iov->iov_base + 3846 DIRBLKSIZ; 3847 uiop->uio_iov->iov_len -= DIRBLKSIZ; 3848 uiop->uio_resid -= DIRBLKSIZ; 3849 uiop->uio_offset += DIRBLKSIZ; 3850 } 3851 3852 nfsmout: 3853 if (nd->nd_mrep != NULL) 3854 m_freem(nd->nd_mrep); 3855 return (error); 3856 } 3857 #endif /* !APPLE */ 3858 3859 /* 3860 * Nfs commit rpc 3861 */ 3862 int 3863 nfsrpc_commit(vnode_t vp, u_quad_t offset, int cnt, struct ucred *cred, 3864 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff) 3865 { 3866 u_int32_t *tl; 3867 struct nfsrv_descript nfsd, *nd = &nfsd; 3868 nfsattrbit_t attrbits; 3869 int error; 3870 struct nfsmount *nmp = VFSTONFS(vp->v_mount); 3871 3872 *attrflagp = 0; 3873 NFSCL_REQSTART(nd, NFSPROC_COMMIT, vp); 3874 NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 3875 txdr_hyper(offset, tl); 3876 tl += 2; 3877 *tl = txdr_unsigned(cnt); 3878 if (nd->nd_flag & ND_NFSV4) { 3879 /* 3880 * And do a Getattr op. 3881 */ 3882 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 3883 *tl = txdr_unsigned(NFSV4OP_GETATTR); 3884 NFSGETATTR_ATTRBIT(&attrbits); 3885 (void) nfsrv_putattrbit(nd, &attrbits); 3886 } 3887 error = nfscl_request(nd, vp, p, cred, stuff); 3888 if (error) 3889 return (error); 3890 error = nfscl_wcc_data(nd, vp, nap, attrflagp, NULL, stuff); 3891 if (!error && !nd->nd_repstat) { 3892 NFSM_DISSECT(tl, u_int32_t *, NFSX_VERF); 3893 NFSLOCKMNT(nmp); 3894 if (NFSBCMP(nmp->nm_verf, tl, NFSX_VERF)) { 3895 NFSBCOPY(tl, nmp->nm_verf, NFSX_VERF); 3896 nd->nd_repstat = NFSERR_STALEWRITEVERF; 3897 } 3898 NFSUNLOCKMNT(nmp); 3899 if (nd->nd_flag & ND_NFSV4) 3900 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 3901 } 3902 nfsmout: 3903 if (!error && nd->nd_repstat) 3904 error = nd->nd_repstat; 3905 m_freem(nd->nd_mrep); 3906 return (error); 3907 } 3908 3909 /* 3910 * NFS byte range lock rpc. 3911 * (Mostly just calls one of the three lower level RPC routines.) 3912 */ 3913 int 3914 nfsrpc_advlock(vnode_t vp, off_t size, int op, struct flock *fl, 3915 int reclaim, struct ucred *cred, NFSPROC_T *p, void *id, int flags) 3916 { 3917 struct nfscllockowner *lp; 3918 struct nfsclclient *clp; 3919 struct nfsfh *nfhp; 3920 struct nfsrv_descript nfsd, *nd = &nfsd; 3921 struct nfsmount *nmp = VFSTONFS(vp->v_mount); 3922 u_int64_t off, len; 3923 off_t start, end; 3924 u_int32_t clidrev = 0; 3925 int error = 0, newone = 0, expireret = 0, retrycnt, donelocally; 3926 int callcnt, dorpc; 3927 3928 /* 3929 * Convert the flock structure into a start and end and do POSIX 3930 * bounds checking. 3931 */ 3932 switch (fl->l_whence) { 3933 case SEEK_SET: 3934 case SEEK_CUR: 3935 /* 3936 * Caller is responsible for adding any necessary offset 3937 * when SEEK_CUR is used. 3938 */ 3939 start = fl->l_start; 3940 off = fl->l_start; 3941 break; 3942 case SEEK_END: 3943 start = size + fl->l_start; 3944 off = size + fl->l_start; 3945 break; 3946 default: 3947 return (EINVAL); 3948 } 3949 if (start < 0) 3950 return (EINVAL); 3951 if (fl->l_len != 0) { 3952 end = start + fl->l_len - 1; 3953 if (end < start) 3954 return (EINVAL); 3955 } 3956 3957 len = fl->l_len; 3958 if (len == 0) 3959 len = NFS64BITSSET; 3960 retrycnt = 0; 3961 do { 3962 nd->nd_repstat = 0; 3963 if (op == F_GETLK) { 3964 error = nfscl_getcl(vp->v_mount, cred, p, 1, &clp); 3965 if (error) 3966 return (error); 3967 error = nfscl_lockt(vp, clp, off, len, fl, p, id, flags); 3968 if (!error) { 3969 clidrev = clp->nfsc_clientidrev; 3970 error = nfsrpc_lockt(nd, vp, clp, off, len, fl, cred, 3971 p, id, flags); 3972 } else if (error == -1) { 3973 error = 0; 3974 } 3975 nfscl_clientrelease(clp); 3976 } else if (op == F_UNLCK && fl->l_type == F_UNLCK) { 3977 /* 3978 * We must loop around for all lockowner cases. 3979 */ 3980 callcnt = 0; 3981 error = nfscl_getcl(vp->v_mount, cred, p, 1, &clp); 3982 if (error) 3983 return (error); 3984 do { 3985 error = nfscl_relbytelock(vp, off, len, cred, p, callcnt, 3986 clp, id, flags, &lp, &dorpc); 3987 /* 3988 * If it returns a NULL lp, we're done. 3989 */ 3990 if (lp == NULL) { 3991 if (callcnt == 0) 3992 nfscl_clientrelease(clp); 3993 else 3994 nfscl_releasealllocks(clp, vp, p, id, flags); 3995 return (error); 3996 } 3997 if (nmp->nm_clp != NULL) 3998 clidrev = nmp->nm_clp->nfsc_clientidrev; 3999 else 4000 clidrev = 0; 4001 /* 4002 * If the server doesn't support Posix lock semantics, 4003 * only allow locks on the entire file, since it won't 4004 * handle overlapping byte ranges. 4005 * There might still be a problem when a lock 4006 * upgrade/downgrade (read<->write) occurs, since the 4007 * server "might" expect an unlock first? 4008 */ 4009 if (dorpc && (lp->nfsl_open->nfso_posixlock || 4010 (off == 0 && len == NFS64BITSSET))) { 4011 /* 4012 * Since the lock records will go away, we must 4013 * wait for grace and delay here. 4014 */ 4015 do { 4016 error = nfsrpc_locku(nd, nmp, lp, off, len, 4017 NFSV4LOCKT_READ, cred, p, 0); 4018 if ((nd->nd_repstat == NFSERR_GRACE || 4019 nd->nd_repstat == NFSERR_DELAY) && 4020 error == 0) 4021 (void) nfs_catnap(PZERO, (int)nd->nd_repstat, 4022 "nfs_advlock"); 4023 } while ((nd->nd_repstat == NFSERR_GRACE || 4024 nd->nd_repstat == NFSERR_DELAY) && error == 0); 4025 } 4026 callcnt++; 4027 } while (error == 0 && nd->nd_repstat == 0); 4028 nfscl_releasealllocks(clp, vp, p, id, flags); 4029 } else if (op == F_SETLK) { 4030 error = nfscl_getbytelock(vp, off, len, fl->l_type, cred, p, 4031 NULL, 0, id, flags, NULL, NULL, &lp, &newone, &donelocally); 4032 if (error || donelocally) { 4033 return (error); 4034 } 4035 if (nmp->nm_clp != NULL) 4036 clidrev = nmp->nm_clp->nfsc_clientidrev; 4037 else 4038 clidrev = 0; 4039 nfhp = VTONFS(vp)->n_fhp; 4040 if (!lp->nfsl_open->nfso_posixlock && 4041 (off != 0 || len != NFS64BITSSET)) { 4042 error = EINVAL; 4043 } else { 4044 error = nfsrpc_lock(nd, nmp, vp, nfhp->nfh_fh, 4045 nfhp->nfh_len, lp, newone, reclaim, off, 4046 len, fl->l_type, cred, p, 0); 4047 } 4048 if (!error) 4049 error = nd->nd_repstat; 4050 nfscl_lockrelease(lp, error, newone); 4051 } else { 4052 error = EINVAL; 4053 } 4054 if (!error) 4055 error = nd->nd_repstat; 4056 if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 4057 error == NFSERR_STALEDONTRECOVER || 4058 error == NFSERR_STALECLIENTID || error == NFSERR_DELAY || 4059 error == NFSERR_BADSESSION) { 4060 (void) nfs_catnap(PZERO, error, "nfs_advlock"); 4061 } else if ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) 4062 && clidrev != 0) { 4063 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p); 4064 retrycnt++; 4065 } 4066 } while (error == NFSERR_GRACE || 4067 error == NFSERR_STALECLIENTID || error == NFSERR_DELAY || 4068 error == NFSERR_STALEDONTRECOVER || error == NFSERR_STALESTATEID || 4069 error == NFSERR_BADSESSION || 4070 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) && 4071 expireret == 0 && clidrev != 0 && retrycnt < 4)); 4072 if (error && retrycnt >= 4) 4073 error = EIO; 4074 return (error); 4075 } 4076 4077 /* 4078 * The lower level routine for the LockT case. 4079 */ 4080 int 4081 nfsrpc_lockt(struct nfsrv_descript *nd, vnode_t vp, 4082 struct nfsclclient *clp, u_int64_t off, u_int64_t len, struct flock *fl, 4083 struct ucred *cred, NFSPROC_T *p, void *id, int flags) 4084 { 4085 u_int32_t *tl; 4086 int error, type, size; 4087 uint8_t own[NFSV4CL_LOCKNAMELEN + NFSX_V4FHMAX]; 4088 struct nfsnode *np; 4089 struct nfsmount *nmp; 4090 struct nfsclsession *tsep; 4091 4092 nmp = VFSTONFS(vp->v_mount); 4093 NFSCL_REQSTART(nd, NFSPROC_LOCKT, vp); 4094 NFSM_BUILD(tl, u_int32_t *, 7 * NFSX_UNSIGNED); 4095 if (fl->l_type == F_RDLCK) 4096 *tl++ = txdr_unsigned(NFSV4LOCKT_READ); 4097 else 4098 *tl++ = txdr_unsigned(NFSV4LOCKT_WRITE); 4099 txdr_hyper(off, tl); 4100 tl += 2; 4101 txdr_hyper(len, tl); 4102 tl += 2; 4103 tsep = nfsmnt_mdssession(nmp); 4104 *tl++ = tsep->nfsess_clientid.lval[0]; 4105 *tl = tsep->nfsess_clientid.lval[1]; 4106 nfscl_filllockowner(id, own, flags); 4107 np = VTONFS(vp); 4108 NFSBCOPY(np->n_fhp->nfh_fh, &own[NFSV4CL_LOCKNAMELEN], 4109 np->n_fhp->nfh_len); 4110 (void)nfsm_strtom(nd, own, NFSV4CL_LOCKNAMELEN + np->n_fhp->nfh_len); 4111 error = nfscl_request(nd, vp, p, cred, NULL); 4112 if (error) 4113 return (error); 4114 if (nd->nd_repstat == 0) { 4115 fl->l_type = F_UNLCK; 4116 } else if (nd->nd_repstat == NFSERR_DENIED) { 4117 nd->nd_repstat = 0; 4118 fl->l_whence = SEEK_SET; 4119 NFSM_DISSECT(tl, u_int32_t *, 8 * NFSX_UNSIGNED); 4120 fl->l_start = fxdr_hyper(tl); 4121 tl += 2; 4122 len = fxdr_hyper(tl); 4123 tl += 2; 4124 if (len == NFS64BITSSET) 4125 fl->l_len = 0; 4126 else 4127 fl->l_len = len; 4128 type = fxdr_unsigned(int, *tl++); 4129 if (type == NFSV4LOCKT_WRITE) 4130 fl->l_type = F_WRLCK; 4131 else 4132 fl->l_type = F_RDLCK; 4133 /* 4134 * XXX For now, I have no idea what to do with the 4135 * conflicting lock_owner, so I'll just set the pid == 0 4136 * and skip over the lock_owner. 4137 */ 4138 fl->l_pid = (pid_t)0; 4139 tl += 2; 4140 size = fxdr_unsigned(int, *tl); 4141 if (size < 0 || size > NFSV4_OPAQUELIMIT) 4142 error = EBADRPC; 4143 if (!error) 4144 error = nfsm_advance(nd, NFSM_RNDUP(size), -1); 4145 } else if (nd->nd_repstat == NFSERR_STALECLIENTID) 4146 nfscl_initiate_recovery(clp); 4147 nfsmout: 4148 m_freem(nd->nd_mrep); 4149 return (error); 4150 } 4151 4152 /* 4153 * Lower level function that performs the LockU RPC. 4154 */ 4155 static int 4156 nfsrpc_locku(struct nfsrv_descript *nd, struct nfsmount *nmp, 4157 struct nfscllockowner *lp, u_int64_t off, u_int64_t len, 4158 u_int32_t type, struct ucred *cred, NFSPROC_T *p, int syscred) 4159 { 4160 u_int32_t *tl; 4161 int error; 4162 4163 nfscl_reqstart(nd, NFSPROC_LOCKU, nmp, lp->nfsl_open->nfso_fh, 4164 lp->nfsl_open->nfso_fhlen, NULL, NULL, 0, 0); 4165 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID + 6 * NFSX_UNSIGNED); 4166 *tl++ = txdr_unsigned(type); 4167 *tl = txdr_unsigned(lp->nfsl_seqid); 4168 if (nfstest_outofseq && 4169 (arc4random() % nfstest_outofseq) == 0) 4170 *tl = txdr_unsigned(lp->nfsl_seqid + 1); 4171 tl++; 4172 if (NFSHASNFSV4N(nmp)) 4173 *tl++ = 0; 4174 else 4175 *tl++ = lp->nfsl_stateid.seqid; 4176 *tl++ = lp->nfsl_stateid.other[0]; 4177 *tl++ = lp->nfsl_stateid.other[1]; 4178 *tl++ = lp->nfsl_stateid.other[2]; 4179 txdr_hyper(off, tl); 4180 tl += 2; 4181 txdr_hyper(len, tl); 4182 if (syscred) 4183 nd->nd_flag |= ND_USEGSSNAME; 4184 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 4185 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4186 NFSCL_INCRSEQID(lp->nfsl_seqid, nd); 4187 if (error) 4188 return (error); 4189 if (nd->nd_repstat == 0) { 4190 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID); 4191 lp->nfsl_stateid.seqid = *tl++; 4192 lp->nfsl_stateid.other[0] = *tl++; 4193 lp->nfsl_stateid.other[1] = *tl++; 4194 lp->nfsl_stateid.other[2] = *tl; 4195 } else if (nd->nd_repstat == NFSERR_STALESTATEID) 4196 nfscl_initiate_recovery(lp->nfsl_open->nfso_own->nfsow_clp); 4197 nfsmout: 4198 m_freem(nd->nd_mrep); 4199 return (error); 4200 } 4201 4202 /* 4203 * The actual Lock RPC. 4204 */ 4205 int 4206 nfsrpc_lock(struct nfsrv_descript *nd, struct nfsmount *nmp, vnode_t vp, 4207 u_int8_t *nfhp, int fhlen, struct nfscllockowner *lp, int newone, 4208 int reclaim, u_int64_t off, u_int64_t len, short type, struct ucred *cred, 4209 NFSPROC_T *p, int syscred) 4210 { 4211 u_int32_t *tl; 4212 int error, size; 4213 uint8_t own[NFSV4CL_LOCKNAMELEN + NFSX_V4FHMAX]; 4214 struct nfsclsession *tsep; 4215 4216 nfscl_reqstart(nd, NFSPROC_LOCK, nmp, nfhp, fhlen, NULL, NULL, 0, 0); 4217 NFSM_BUILD(tl, u_int32_t *, 7 * NFSX_UNSIGNED); 4218 if (type == F_RDLCK) 4219 *tl++ = txdr_unsigned(NFSV4LOCKT_READ); 4220 else 4221 *tl++ = txdr_unsigned(NFSV4LOCKT_WRITE); 4222 *tl++ = txdr_unsigned(reclaim); 4223 txdr_hyper(off, tl); 4224 tl += 2; 4225 txdr_hyper(len, tl); 4226 tl += 2; 4227 if (newone) { 4228 *tl = newnfs_true; 4229 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID + 4230 2 * NFSX_UNSIGNED + NFSX_HYPER); 4231 *tl++ = txdr_unsigned(lp->nfsl_open->nfso_own->nfsow_seqid); 4232 if (NFSHASNFSV4N(nmp)) 4233 *tl++ = 0; 4234 else 4235 *tl++ = lp->nfsl_open->nfso_stateid.seqid; 4236 *tl++ = lp->nfsl_open->nfso_stateid.other[0]; 4237 *tl++ = lp->nfsl_open->nfso_stateid.other[1]; 4238 *tl++ = lp->nfsl_open->nfso_stateid.other[2]; 4239 *tl++ = txdr_unsigned(lp->nfsl_seqid); 4240 tsep = nfsmnt_mdssession(nmp); 4241 *tl++ = tsep->nfsess_clientid.lval[0]; 4242 *tl = tsep->nfsess_clientid.lval[1]; 4243 NFSBCOPY(lp->nfsl_owner, own, NFSV4CL_LOCKNAMELEN); 4244 NFSBCOPY(nfhp, &own[NFSV4CL_LOCKNAMELEN], fhlen); 4245 (void)nfsm_strtom(nd, own, NFSV4CL_LOCKNAMELEN + fhlen); 4246 } else { 4247 *tl = newnfs_false; 4248 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID + NFSX_UNSIGNED); 4249 if (NFSHASNFSV4N(nmp)) 4250 *tl++ = 0; 4251 else 4252 *tl++ = lp->nfsl_stateid.seqid; 4253 *tl++ = lp->nfsl_stateid.other[0]; 4254 *tl++ = lp->nfsl_stateid.other[1]; 4255 *tl++ = lp->nfsl_stateid.other[2]; 4256 *tl = txdr_unsigned(lp->nfsl_seqid); 4257 if (nfstest_outofseq && 4258 (arc4random() % nfstest_outofseq) == 0) 4259 *tl = txdr_unsigned(lp->nfsl_seqid + 1); 4260 } 4261 if (syscred) 4262 nd->nd_flag |= ND_USEGSSNAME; 4263 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, vp, p, cred, 4264 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4265 if (error) 4266 return (error); 4267 if (newone) 4268 NFSCL_INCRSEQID(lp->nfsl_open->nfso_own->nfsow_seqid, nd); 4269 NFSCL_INCRSEQID(lp->nfsl_seqid, nd); 4270 if (nd->nd_repstat == 0) { 4271 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID); 4272 lp->nfsl_stateid.seqid = *tl++; 4273 lp->nfsl_stateid.other[0] = *tl++; 4274 lp->nfsl_stateid.other[1] = *tl++; 4275 lp->nfsl_stateid.other[2] = *tl; 4276 } else if (nd->nd_repstat == NFSERR_DENIED) { 4277 NFSM_DISSECT(tl, u_int32_t *, 8 * NFSX_UNSIGNED); 4278 size = fxdr_unsigned(int, *(tl + 7)); 4279 if (size < 0 || size > NFSV4_OPAQUELIMIT) 4280 error = EBADRPC; 4281 if (!error) 4282 error = nfsm_advance(nd, NFSM_RNDUP(size), -1); 4283 } else if (nd->nd_repstat == NFSERR_STALESTATEID) 4284 nfscl_initiate_recovery(lp->nfsl_open->nfso_own->nfsow_clp); 4285 nfsmout: 4286 m_freem(nd->nd_mrep); 4287 return (error); 4288 } 4289 4290 /* 4291 * nfs statfs rpc 4292 * (always called with the vp for the mount point) 4293 */ 4294 int 4295 nfsrpc_statfs(vnode_t vp, struct nfsstatfs *sbp, struct nfsfsinfo *fsp, 4296 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, 4297 void *stuff) 4298 { 4299 u_int32_t *tl = NULL; 4300 struct nfsrv_descript nfsd, *nd = &nfsd; 4301 struct nfsmount *nmp; 4302 nfsattrbit_t attrbits; 4303 int error; 4304 4305 *attrflagp = 0; 4306 nmp = VFSTONFS(vp->v_mount); 4307 if (NFSHASNFSV4(nmp)) { 4308 /* 4309 * For V4, you actually do a getattr. 4310 */ 4311 NFSCL_REQSTART(nd, NFSPROC_GETATTR, vp); 4312 NFSSTATFS_GETATTRBIT(&attrbits); 4313 (void) nfsrv_putattrbit(nd, &attrbits); 4314 nd->nd_flag |= ND_USEGSSNAME; 4315 error = nfscl_request(nd, vp, p, cred, stuff); 4316 if (error) 4317 return (error); 4318 if (nd->nd_repstat == 0) { 4319 error = nfsv4_loadattr(nd, NULL, nap, NULL, NULL, 0, 4320 NULL, NULL, sbp, fsp, NULL, 0, NULL, NULL, NULL, p, 4321 cred); 4322 if (!error) { 4323 nmp->nm_fsid[0] = nap->na_filesid[0]; 4324 nmp->nm_fsid[1] = nap->na_filesid[1]; 4325 NFSSETHASSETFSID(nmp); 4326 *attrflagp = 1; 4327 } 4328 } else { 4329 error = nd->nd_repstat; 4330 } 4331 if (error) 4332 goto nfsmout; 4333 } else { 4334 NFSCL_REQSTART(nd, NFSPROC_FSSTAT, vp); 4335 error = nfscl_request(nd, vp, p, cred, stuff); 4336 if (error) 4337 return (error); 4338 if (nd->nd_flag & ND_NFSV3) { 4339 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 4340 if (error) 4341 goto nfsmout; 4342 } 4343 if (nd->nd_repstat) { 4344 error = nd->nd_repstat; 4345 goto nfsmout; 4346 } 4347 NFSM_DISSECT(tl, u_int32_t *, 4348 NFSX_STATFS(nd->nd_flag & ND_NFSV3)); 4349 } 4350 if (NFSHASNFSV3(nmp)) { 4351 sbp->sf_tbytes = fxdr_hyper(tl); tl += 2; 4352 sbp->sf_fbytes = fxdr_hyper(tl); tl += 2; 4353 sbp->sf_abytes = fxdr_hyper(tl); tl += 2; 4354 sbp->sf_tfiles = fxdr_hyper(tl); tl += 2; 4355 sbp->sf_ffiles = fxdr_hyper(tl); tl += 2; 4356 sbp->sf_afiles = fxdr_hyper(tl); tl += 2; 4357 sbp->sf_invarsec = fxdr_unsigned(u_int32_t, *tl); 4358 } else if (NFSHASNFSV4(nmp) == 0) { 4359 sbp->sf_tsize = fxdr_unsigned(u_int32_t, *tl++); 4360 sbp->sf_bsize = fxdr_unsigned(u_int32_t, *tl++); 4361 sbp->sf_blocks = fxdr_unsigned(u_int32_t, *tl++); 4362 sbp->sf_bfree = fxdr_unsigned(u_int32_t, *tl++); 4363 sbp->sf_bavail = fxdr_unsigned(u_int32_t, *tl); 4364 } 4365 nfsmout: 4366 m_freem(nd->nd_mrep); 4367 return (error); 4368 } 4369 4370 /* 4371 * nfs pathconf rpc 4372 */ 4373 int 4374 nfsrpc_pathconf(vnode_t vp, struct nfsv3_pathconf *pc, 4375 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, 4376 void *stuff) 4377 { 4378 struct nfsrv_descript nfsd, *nd = &nfsd; 4379 struct nfsmount *nmp; 4380 u_int32_t *tl; 4381 nfsattrbit_t attrbits; 4382 int error; 4383 4384 *attrflagp = 0; 4385 nmp = VFSTONFS(vp->v_mount); 4386 if (NFSHASNFSV4(nmp)) { 4387 /* 4388 * For V4, you actually do a getattr. 4389 */ 4390 NFSCL_REQSTART(nd, NFSPROC_GETATTR, vp); 4391 NFSPATHCONF_GETATTRBIT(&attrbits); 4392 (void) nfsrv_putattrbit(nd, &attrbits); 4393 nd->nd_flag |= ND_USEGSSNAME; 4394 error = nfscl_request(nd, vp, p, cred, stuff); 4395 if (error) 4396 return (error); 4397 if (nd->nd_repstat == 0) { 4398 error = nfsv4_loadattr(nd, NULL, nap, NULL, NULL, 0, 4399 pc, NULL, NULL, NULL, NULL, 0, NULL, NULL, NULL, p, 4400 cred); 4401 if (!error) 4402 *attrflagp = 1; 4403 } else { 4404 error = nd->nd_repstat; 4405 } 4406 } else { 4407 NFSCL_REQSTART(nd, NFSPROC_PATHCONF, vp); 4408 error = nfscl_request(nd, vp, p, cred, stuff); 4409 if (error) 4410 return (error); 4411 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 4412 if (nd->nd_repstat && !error) 4413 error = nd->nd_repstat; 4414 if (!error) { 4415 NFSM_DISSECT(tl, u_int32_t *, NFSX_V3PATHCONF); 4416 pc->pc_linkmax = fxdr_unsigned(u_int32_t, *tl++); 4417 pc->pc_namemax = fxdr_unsigned(u_int32_t, *tl++); 4418 pc->pc_notrunc = fxdr_unsigned(u_int32_t, *tl++); 4419 pc->pc_chownrestricted = 4420 fxdr_unsigned(u_int32_t, *tl++); 4421 pc->pc_caseinsensitive = 4422 fxdr_unsigned(u_int32_t, *tl++); 4423 pc->pc_casepreserving = fxdr_unsigned(u_int32_t, *tl); 4424 } 4425 } 4426 nfsmout: 4427 m_freem(nd->nd_mrep); 4428 return (error); 4429 } 4430 4431 /* 4432 * nfs version 3 fsinfo rpc call 4433 */ 4434 int 4435 nfsrpc_fsinfo(vnode_t vp, struct nfsfsinfo *fsp, struct ucred *cred, 4436 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff) 4437 { 4438 u_int32_t *tl; 4439 struct nfsrv_descript nfsd, *nd = &nfsd; 4440 int error; 4441 4442 *attrflagp = 0; 4443 NFSCL_REQSTART(nd, NFSPROC_FSINFO, vp); 4444 error = nfscl_request(nd, vp, p, cred, stuff); 4445 if (error) 4446 return (error); 4447 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 4448 if (nd->nd_repstat && !error) 4449 error = nd->nd_repstat; 4450 if (!error) { 4451 NFSM_DISSECT(tl, u_int32_t *, NFSX_V3FSINFO); 4452 fsp->fs_rtmax = fxdr_unsigned(u_int32_t, *tl++); 4453 fsp->fs_rtpref = fxdr_unsigned(u_int32_t, *tl++); 4454 fsp->fs_rtmult = fxdr_unsigned(u_int32_t, *tl++); 4455 fsp->fs_wtmax = fxdr_unsigned(u_int32_t, *tl++); 4456 fsp->fs_wtpref = fxdr_unsigned(u_int32_t, *tl++); 4457 fsp->fs_wtmult = fxdr_unsigned(u_int32_t, *tl++); 4458 fsp->fs_dtpref = fxdr_unsigned(u_int32_t, *tl++); 4459 fsp->fs_maxfilesize = fxdr_hyper(tl); 4460 tl += 2; 4461 fxdr_nfsv3time(tl, &fsp->fs_timedelta); 4462 tl += 2; 4463 fsp->fs_properties = fxdr_unsigned(u_int32_t, *tl); 4464 } 4465 nfsmout: 4466 m_freem(nd->nd_mrep); 4467 return (error); 4468 } 4469 4470 /* 4471 * This function performs the Renew RPC. 4472 */ 4473 int 4474 nfsrpc_renew(struct nfsclclient *clp, struct nfsclds *dsp, struct ucred *cred, 4475 NFSPROC_T *p) 4476 { 4477 u_int32_t *tl; 4478 struct nfsrv_descript nfsd; 4479 struct nfsrv_descript *nd = &nfsd; 4480 struct nfsmount *nmp; 4481 int error; 4482 struct nfssockreq *nrp; 4483 struct nfsclsession *tsep; 4484 4485 nmp = clp->nfsc_nmp; 4486 if (nmp == NULL) 4487 return (0); 4488 if (dsp == NULL) 4489 nfscl_reqstart(nd, NFSPROC_RENEW, nmp, NULL, 0, NULL, NULL, 0, 4490 0); 4491 else 4492 nfscl_reqstart(nd, NFSPROC_RENEW, nmp, NULL, 0, NULL, 4493 &dsp->nfsclds_sess, 0, 0); 4494 if (!NFSHASNFSV4N(nmp)) { 4495 /* NFSv4.1 just uses a Sequence Op and not a Renew. */ 4496 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 4497 tsep = nfsmnt_mdssession(nmp); 4498 *tl++ = tsep->nfsess_clientid.lval[0]; 4499 *tl = tsep->nfsess_clientid.lval[1]; 4500 } 4501 nrp = NULL; 4502 if (dsp != NULL) 4503 nrp = dsp->nfsclds_sockp; 4504 if (nrp == NULL) 4505 /* If NULL, use the MDS socket. */ 4506 nrp = &nmp->nm_sockreq; 4507 nd->nd_flag |= ND_USEGSSNAME; 4508 if (dsp == NULL) 4509 error = newnfs_request(nd, nmp, NULL, nrp, NULL, p, cred, 4510 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4511 else { 4512 error = newnfs_request(nd, nmp, NULL, nrp, NULL, p, cred, 4513 NFS_PROG, NFS_VER4, NULL, 1, NULL, &dsp->nfsclds_sess); 4514 if (error == ENXIO) 4515 nfscl_cancelreqs(dsp); 4516 } 4517 if (error) 4518 return (error); 4519 error = nd->nd_repstat; 4520 m_freem(nd->nd_mrep); 4521 return (error); 4522 } 4523 4524 /* 4525 * This function performs the Releaselockowner RPC. 4526 */ 4527 int 4528 nfsrpc_rellockown(struct nfsmount *nmp, struct nfscllockowner *lp, 4529 uint8_t *fh, int fhlen, struct ucred *cred, NFSPROC_T *p) 4530 { 4531 struct nfsrv_descript nfsd, *nd = &nfsd; 4532 u_int32_t *tl; 4533 int error; 4534 uint8_t own[NFSV4CL_LOCKNAMELEN + NFSX_V4FHMAX]; 4535 struct nfsclsession *tsep; 4536 4537 if (NFSHASNFSV4N(nmp)) { 4538 /* For NFSv4.1, do a FreeStateID. */ 4539 nfscl_reqstart(nd, NFSPROC_FREESTATEID, nmp, NULL, 0, NULL, 4540 NULL, 0, 0); 4541 nfsm_stateidtom(nd, &lp->nfsl_stateid, NFSSTATEID_PUTSTATEID); 4542 } else { 4543 nfscl_reqstart(nd, NFSPROC_RELEASELCKOWN, nmp, NULL, 0, NULL, 4544 NULL, 0, 0); 4545 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 4546 tsep = nfsmnt_mdssession(nmp); 4547 *tl++ = tsep->nfsess_clientid.lval[0]; 4548 *tl = tsep->nfsess_clientid.lval[1]; 4549 NFSBCOPY(lp->nfsl_owner, own, NFSV4CL_LOCKNAMELEN); 4550 NFSBCOPY(fh, &own[NFSV4CL_LOCKNAMELEN], fhlen); 4551 (void)nfsm_strtom(nd, own, NFSV4CL_LOCKNAMELEN + fhlen); 4552 } 4553 nd->nd_flag |= ND_USEGSSNAME; 4554 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 4555 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4556 if (error) 4557 return (error); 4558 error = nd->nd_repstat; 4559 m_freem(nd->nd_mrep); 4560 return (error); 4561 } 4562 4563 /* 4564 * This function performs the Compound to get the mount pt FH. 4565 */ 4566 int 4567 nfsrpc_getdirpath(struct nfsmount *nmp, u_char *dirpath, struct ucred *cred, 4568 NFSPROC_T *p) 4569 { 4570 u_int32_t *tl; 4571 struct nfsrv_descript nfsd; 4572 struct nfsrv_descript *nd = &nfsd; 4573 u_char *cp, *cp2; 4574 int error, cnt, len, setnil; 4575 u_int32_t *opcntp; 4576 4577 nfscl_reqstart(nd, NFSPROC_PUTROOTFH, nmp, NULL, 0, &opcntp, NULL, 0, 4578 0); 4579 cp = dirpath; 4580 cnt = 0; 4581 do { 4582 setnil = 0; 4583 while (*cp == '/') 4584 cp++; 4585 cp2 = cp; 4586 while (*cp2 != '\0' && *cp2 != '/') 4587 cp2++; 4588 if (*cp2 == '/') { 4589 setnil = 1; 4590 *cp2 = '\0'; 4591 } 4592 if (cp2 != cp) { 4593 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 4594 *tl = txdr_unsigned(NFSV4OP_LOOKUP); 4595 nfsm_strtom(nd, cp, strlen(cp)); 4596 cnt++; 4597 } 4598 if (setnil) 4599 *cp2++ = '/'; 4600 cp = cp2; 4601 } while (*cp != '\0'); 4602 if (NFSHASNFSV4N(nmp)) 4603 /* Has a Sequence Op done by nfscl_reqstart(). */ 4604 *opcntp = txdr_unsigned(3 + cnt); 4605 else 4606 *opcntp = txdr_unsigned(2 + cnt); 4607 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 4608 *tl = txdr_unsigned(NFSV4OP_GETFH); 4609 nd->nd_flag |= ND_USEGSSNAME; 4610 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 4611 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4612 if (error) 4613 return (error); 4614 if (nd->nd_repstat == 0) { 4615 NFSM_DISSECT(tl, u_int32_t *, (3 + 2 * cnt) * NFSX_UNSIGNED); 4616 tl += (2 + 2 * cnt); 4617 if ((len = fxdr_unsigned(int, *tl)) <= 0 || 4618 len > NFSX_FHMAX) { 4619 nd->nd_repstat = NFSERR_BADXDR; 4620 } else { 4621 nd->nd_repstat = nfsrv_mtostr(nd, nmp->nm_fh, len); 4622 if (nd->nd_repstat == 0) 4623 nmp->nm_fhsize = len; 4624 } 4625 } 4626 error = nd->nd_repstat; 4627 nfsmout: 4628 m_freem(nd->nd_mrep); 4629 return (error); 4630 } 4631 4632 /* 4633 * This function performs the Delegreturn RPC. 4634 */ 4635 int 4636 nfsrpc_delegreturn(struct nfscldeleg *dp, struct ucred *cred, 4637 struct nfsmount *nmp, NFSPROC_T *p, int syscred) 4638 { 4639 u_int32_t *tl; 4640 struct nfsrv_descript nfsd; 4641 struct nfsrv_descript *nd = &nfsd; 4642 int error; 4643 4644 nfscl_reqstart(nd, NFSPROC_DELEGRETURN, nmp, dp->nfsdl_fh, 4645 dp->nfsdl_fhlen, NULL, NULL, 0, 0); 4646 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID); 4647 if (NFSHASNFSV4N(nmp)) 4648 *tl++ = 0; 4649 else 4650 *tl++ = dp->nfsdl_stateid.seqid; 4651 *tl++ = dp->nfsdl_stateid.other[0]; 4652 *tl++ = dp->nfsdl_stateid.other[1]; 4653 *tl = dp->nfsdl_stateid.other[2]; 4654 if (syscred) 4655 nd->nd_flag |= ND_USEGSSNAME; 4656 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 4657 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4658 if (error) 4659 return (error); 4660 error = nd->nd_repstat; 4661 m_freem(nd->nd_mrep); 4662 return (error); 4663 } 4664 4665 /* 4666 * nfs getacl call. 4667 */ 4668 int 4669 nfsrpc_getacl(vnode_t vp, struct ucred *cred, NFSPROC_T *p, 4670 struct acl *aclp, void *stuff) 4671 { 4672 struct nfsrv_descript nfsd, *nd = &nfsd; 4673 int error; 4674 nfsattrbit_t attrbits; 4675 struct nfsmount *nmp = VFSTONFS(vp->v_mount); 4676 4677 if (nfsrv_useacl == 0 || !NFSHASNFSV4(nmp)) 4678 return (EOPNOTSUPP); 4679 NFSCL_REQSTART(nd, NFSPROC_GETACL, vp); 4680 NFSZERO_ATTRBIT(&attrbits); 4681 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_ACL); 4682 (void) nfsrv_putattrbit(nd, &attrbits); 4683 error = nfscl_request(nd, vp, p, cred, stuff); 4684 if (error) 4685 return (error); 4686 if (!nd->nd_repstat) 4687 error = nfsv4_loadattr(nd, vp, NULL, NULL, NULL, 0, NULL, 4688 NULL, NULL, NULL, aclp, 0, NULL, NULL, NULL, p, cred); 4689 else 4690 error = nd->nd_repstat; 4691 m_freem(nd->nd_mrep); 4692 return (error); 4693 } 4694 4695 /* 4696 * nfs setacl call. 4697 */ 4698 int 4699 nfsrpc_setacl(vnode_t vp, struct ucred *cred, NFSPROC_T *p, 4700 struct acl *aclp, void *stuff) 4701 { 4702 int error; 4703 struct nfsmount *nmp = VFSTONFS(vp->v_mount); 4704 4705 if (nfsrv_useacl == 0 || !NFSHASNFSV4(nmp)) 4706 return (EOPNOTSUPP); 4707 error = nfsrpc_setattr(vp, NULL, aclp, cred, p, NULL, NULL, stuff); 4708 return (error); 4709 } 4710 4711 /* 4712 * nfs setacl call. 4713 */ 4714 static int 4715 nfsrpc_setaclrpc(vnode_t vp, struct ucred *cred, NFSPROC_T *p, 4716 struct acl *aclp, nfsv4stateid_t *stateidp, void *stuff) 4717 { 4718 struct nfsrv_descript nfsd, *nd = &nfsd; 4719 int error; 4720 nfsattrbit_t attrbits; 4721 struct nfsmount *nmp = VFSTONFS(vp->v_mount); 4722 4723 if (!NFSHASNFSV4(nmp)) 4724 return (EOPNOTSUPP); 4725 NFSCL_REQSTART(nd, NFSPROC_SETACL, vp); 4726 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID); 4727 NFSZERO_ATTRBIT(&attrbits); 4728 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_ACL); 4729 (void) nfsv4_fillattr(nd, vp->v_mount, vp, aclp, NULL, NULL, 0, 4730 &attrbits, NULL, NULL, 0, 0, 0, 0, (uint64_t)0, NULL); 4731 error = nfscl_request(nd, vp, p, cred, stuff); 4732 if (error) 4733 return (error); 4734 /* Don't care about the pre/postop attributes */ 4735 m_freem(nd->nd_mrep); 4736 return (nd->nd_repstat); 4737 } 4738 4739 /* 4740 * Do the NFSv4.1 Exchange ID. 4741 */ 4742 int 4743 nfsrpc_exchangeid(struct nfsmount *nmp, struct nfsclclient *clp, 4744 struct nfssockreq *nrp, int minorvers, uint32_t exchflags, 4745 struct nfsclds **dspp, struct ucred *cred, NFSPROC_T *p) 4746 { 4747 uint32_t *tl, v41flags; 4748 struct nfsrv_descript nfsd; 4749 struct nfsrv_descript *nd = &nfsd; 4750 struct nfsclds *dsp; 4751 struct timespec verstime; 4752 int error, len; 4753 4754 *dspp = NULL; 4755 if (minorvers == 0) 4756 minorvers = nmp->nm_minorvers; 4757 nfscl_reqstart(nd, NFSPROC_EXCHANGEID, nmp, NULL, 0, NULL, NULL, 4758 NFS_VER4, minorvers); 4759 NFSM_BUILD(tl, uint32_t *, 2 * NFSX_UNSIGNED); 4760 *tl++ = txdr_unsigned(nfsboottime.tv_sec); /* Client owner */ 4761 *tl = txdr_unsigned(clp->nfsc_rev); 4762 (void) nfsm_strtom(nd, clp->nfsc_id, clp->nfsc_idlen); 4763 4764 NFSM_BUILD(tl, uint32_t *, 3 * NFSX_UNSIGNED); 4765 *tl++ = txdr_unsigned(exchflags); 4766 *tl++ = txdr_unsigned(NFSV4EXCH_SP4NONE); 4767 4768 /* Set the implementation id4 */ 4769 *tl = txdr_unsigned(1); 4770 (void) nfsm_strtom(nd, "freebsd.org", strlen("freebsd.org")); 4771 (void) nfsm_strtom(nd, version, strlen(version)); 4772 NFSM_BUILD(tl, uint32_t *, NFSX_V4TIME); 4773 verstime.tv_sec = 1293840000; /* Jan 1, 2011 */ 4774 verstime.tv_nsec = 0; 4775 txdr_nfsv4time(&verstime, tl); 4776 nd->nd_flag |= ND_USEGSSNAME; 4777 error = newnfs_request(nd, nmp, NULL, nrp, NULL, p, cred, 4778 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4779 NFSCL_DEBUG(1, "exchangeid err=%d reps=%d\n", error, 4780 (int)nd->nd_repstat); 4781 if (error != 0) 4782 return (error); 4783 if (nd->nd_repstat == 0) { 4784 NFSM_DISSECT(tl, uint32_t *, 6 * NFSX_UNSIGNED + NFSX_HYPER); 4785 len = fxdr_unsigned(int, *(tl + 7)); 4786 if (len < 0 || len > NFSV4_OPAQUELIMIT) { 4787 error = NFSERR_BADXDR; 4788 goto nfsmout; 4789 } 4790 dsp = malloc(sizeof(struct nfsclds) + len + 1, M_NFSCLDS, 4791 M_WAITOK | M_ZERO); 4792 dsp->nfsclds_expire = NFSD_MONOSEC + clp->nfsc_renew; 4793 dsp->nfsclds_servownlen = len; 4794 dsp->nfsclds_sess.nfsess_clientid.lval[0] = *tl++; 4795 dsp->nfsclds_sess.nfsess_clientid.lval[1] = *tl++; 4796 dsp->nfsclds_sess.nfsess_sequenceid = 4797 fxdr_unsigned(uint32_t, *tl++); 4798 v41flags = fxdr_unsigned(uint32_t, *tl); 4799 if ((v41flags & NFSV4EXCH_USEPNFSMDS) != 0 && 4800 NFSHASPNFSOPT(nmp)) { 4801 NFSCL_DEBUG(1, "set PNFS\n"); 4802 NFSLOCKMNT(nmp); 4803 nmp->nm_state |= NFSSTA_PNFS; 4804 NFSUNLOCKMNT(nmp); 4805 dsp->nfsclds_flags |= NFSCLDS_MDS; 4806 } 4807 if ((v41flags & NFSV4EXCH_USEPNFSDS) != 0) 4808 dsp->nfsclds_flags |= NFSCLDS_DS; 4809 if (minorvers == NFSV42_MINORVERSION) 4810 dsp->nfsclds_flags |= NFSCLDS_MINORV2; 4811 if (len > 0) 4812 nd->nd_repstat = nfsrv_mtostr(nd, 4813 dsp->nfsclds_serverown, len); 4814 if (nd->nd_repstat == 0) { 4815 mtx_init(&dsp->nfsclds_mtx, "nfsds", NULL, MTX_DEF); 4816 mtx_init(&dsp->nfsclds_sess.nfsess_mtx, "nfssession", 4817 NULL, MTX_DEF); 4818 nfscl_initsessionslots(&dsp->nfsclds_sess); 4819 *dspp = dsp; 4820 } else 4821 free(dsp, M_NFSCLDS); 4822 } 4823 error = nd->nd_repstat; 4824 nfsmout: 4825 m_freem(nd->nd_mrep); 4826 return (error); 4827 } 4828 4829 /* 4830 * Do the NFSv4.1 Create Session. 4831 */ 4832 int 4833 nfsrpc_createsession(struct nfsmount *nmp, struct nfsclsession *sep, 4834 struct nfssockreq *nrp, struct nfsclds *dsp, uint32_t sequenceid, int mds, 4835 struct ucred *cred, NFSPROC_T *p) 4836 { 4837 uint32_t crflags, maxval, *tl; 4838 struct nfsrv_descript nfsd; 4839 struct nfsrv_descript *nd = &nfsd; 4840 int error, irdcnt, minorvers; 4841 4842 /* Make sure nm_rsize, nm_wsize is set. */ 4843 if (nmp->nm_rsize > NFS_MAXBSIZE || nmp->nm_rsize == 0) 4844 nmp->nm_rsize = NFS_MAXBSIZE; 4845 if (nmp->nm_wsize > NFS_MAXBSIZE || nmp->nm_wsize == 0) 4846 nmp->nm_wsize = NFS_MAXBSIZE; 4847 if (dsp == NULL) 4848 minorvers = nmp->nm_minorvers; 4849 else if ((dsp->nfsclds_flags & NFSCLDS_MINORV2) != 0) 4850 minorvers = NFSV42_MINORVERSION; 4851 else 4852 minorvers = NFSV41_MINORVERSION; 4853 nfscl_reqstart(nd, NFSPROC_CREATESESSION, nmp, NULL, 0, NULL, NULL, 4854 NFS_VER4, minorvers); 4855 NFSM_BUILD(tl, uint32_t *, 4 * NFSX_UNSIGNED); 4856 *tl++ = sep->nfsess_clientid.lval[0]; 4857 *tl++ = sep->nfsess_clientid.lval[1]; 4858 *tl++ = txdr_unsigned(sequenceid); 4859 crflags = (NFSMNT_RDONLY(nmp->nm_mountp) ? 0 : NFSV4CRSESS_PERSIST); 4860 if (nfscl_enablecallb != 0 && nfs_numnfscbd > 0 && mds != 0) 4861 crflags |= NFSV4CRSESS_CONNBACKCHAN; 4862 *tl = txdr_unsigned(crflags); 4863 4864 /* Fill in fore channel attributes. */ 4865 NFSM_BUILD(tl, uint32_t *, 7 * NFSX_UNSIGNED); 4866 *tl++ = 0; /* Header pad size */ 4867 if ((nd->nd_flag & ND_NFSV42) != 0 && mds != 0 && sb_max_adj >= 4868 nmp->nm_wsize && sb_max_adj >= nmp->nm_rsize) { 4869 /* 4870 * NFSv4.2 Extended Attribute operations may want to do 4871 * requests/replies that are larger than nm_rsize/nm_wsize. 4872 */ 4873 *tl++ = txdr_unsigned(sb_max_adj - NFS_MAXXDR); 4874 *tl++ = txdr_unsigned(sb_max_adj - NFS_MAXXDR); 4875 } else { 4876 *tl++ = txdr_unsigned(nmp->nm_wsize + NFS_MAXXDR); 4877 *tl++ = txdr_unsigned(nmp->nm_rsize + NFS_MAXXDR); 4878 } 4879 *tl++ = txdr_unsigned(4096); /* Max response size cached */ 4880 *tl++ = txdr_unsigned(20); /* Max operations */ 4881 *tl++ = txdr_unsigned(64); /* Max slots */ 4882 *tl = 0; /* No rdma ird */ 4883 4884 /* Fill in back channel attributes. */ 4885 NFSM_BUILD(tl, uint32_t *, 7 * NFSX_UNSIGNED); 4886 *tl++ = 0; /* Header pad size */ 4887 *tl++ = txdr_unsigned(10000); /* Max request size */ 4888 *tl++ = txdr_unsigned(10000); /* Max response size */ 4889 *tl++ = txdr_unsigned(4096); /* Max response size cached */ 4890 *tl++ = txdr_unsigned(4); /* Max operations */ 4891 *tl++ = txdr_unsigned(NFSV4_CBSLOTS); /* Max slots */ 4892 *tl = 0; /* No rdma ird */ 4893 4894 NFSM_BUILD(tl, uint32_t *, 8 * NFSX_UNSIGNED); 4895 *tl++ = txdr_unsigned(NFS_CALLBCKPROG); /* Call back prog # */ 4896 4897 /* Allow AUTH_SYS callbacks as uid, gid == 0. */ 4898 *tl++ = txdr_unsigned(1); /* Auth_sys only */ 4899 *tl++ = txdr_unsigned(AUTH_SYS); /* AUTH_SYS type */ 4900 *tl++ = txdr_unsigned(nfsboottime.tv_sec); /* time stamp */ 4901 *tl++ = 0; /* Null machine name */ 4902 *tl++ = 0; /* Uid == 0 */ 4903 *tl++ = 0; /* Gid == 0 */ 4904 *tl = 0; /* No additional gids */ 4905 nd->nd_flag |= ND_USEGSSNAME; 4906 error = newnfs_request(nd, nmp, NULL, nrp, NULL, p, cred, NFS_PROG, 4907 NFS_VER4, NULL, 1, NULL, NULL); 4908 if (error != 0) 4909 return (error); 4910 if (nd->nd_repstat == 0) { 4911 NFSM_DISSECT(tl, uint32_t *, NFSX_V4SESSIONID + 4912 2 * NFSX_UNSIGNED); 4913 bcopy(tl, sep->nfsess_sessionid, NFSX_V4SESSIONID); 4914 tl += NFSX_V4SESSIONID / NFSX_UNSIGNED; 4915 sep->nfsess_sequenceid = fxdr_unsigned(uint32_t, *tl++); 4916 crflags = fxdr_unsigned(uint32_t, *tl); 4917 if ((crflags & NFSV4CRSESS_PERSIST) != 0 && mds != 0) { 4918 NFSLOCKMNT(nmp); 4919 nmp->nm_state |= NFSSTA_SESSPERSIST; 4920 NFSUNLOCKMNT(nmp); 4921 } 4922 4923 /* Get the fore channel slot count. */ 4924 NFSM_DISSECT(tl, uint32_t *, 7 * NFSX_UNSIGNED); 4925 tl++; /* Skip the header pad size. */ 4926 4927 /* Make sure nm_wsize is small enough. */ 4928 maxval = fxdr_unsigned(uint32_t, *tl++); 4929 while (maxval < nmp->nm_wsize + NFS_MAXXDR) { 4930 if (nmp->nm_wsize > 8096) 4931 nmp->nm_wsize /= 2; 4932 else 4933 break; 4934 } 4935 sep->nfsess_maxreq = maxval; 4936 4937 /* Make sure nm_rsize is small enough. */ 4938 maxval = fxdr_unsigned(uint32_t, *tl++); 4939 while (maxval < nmp->nm_rsize + NFS_MAXXDR) { 4940 if (nmp->nm_rsize > 8096) 4941 nmp->nm_rsize /= 2; 4942 else 4943 break; 4944 } 4945 sep->nfsess_maxresp = maxval; 4946 4947 sep->nfsess_maxcache = fxdr_unsigned(int, *tl++); 4948 tl++; 4949 sep->nfsess_foreslots = fxdr_unsigned(uint16_t, *tl++); 4950 NFSCL_DEBUG(4, "fore slots=%d\n", (int)sep->nfsess_foreslots); 4951 irdcnt = fxdr_unsigned(int, *tl); 4952 if (irdcnt > 0) 4953 NFSM_DISSECT(tl, uint32_t *, irdcnt * NFSX_UNSIGNED); 4954 4955 /* and the back channel slot count. */ 4956 NFSM_DISSECT(tl, uint32_t *, 7 * NFSX_UNSIGNED); 4957 tl += 5; 4958 sep->nfsess_backslots = fxdr_unsigned(uint16_t, *tl); 4959 NFSCL_DEBUG(4, "back slots=%d\n", (int)sep->nfsess_backslots); 4960 } 4961 error = nd->nd_repstat; 4962 nfsmout: 4963 m_freem(nd->nd_mrep); 4964 return (error); 4965 } 4966 4967 /* 4968 * Do the NFSv4.1 Destroy Session. 4969 */ 4970 int 4971 nfsrpc_destroysession(struct nfsmount *nmp, struct nfsclclient *clp, 4972 struct ucred *cred, NFSPROC_T *p) 4973 { 4974 uint32_t *tl; 4975 struct nfsrv_descript nfsd; 4976 struct nfsrv_descript *nd = &nfsd; 4977 int error; 4978 struct nfsclsession *tsep; 4979 4980 nfscl_reqstart(nd, NFSPROC_DESTROYSESSION, nmp, NULL, 0, NULL, NULL, 0, 4981 0); 4982 NFSM_BUILD(tl, uint32_t *, NFSX_V4SESSIONID); 4983 tsep = nfsmnt_mdssession(nmp); 4984 bcopy(tsep->nfsess_sessionid, tl, NFSX_V4SESSIONID); 4985 nd->nd_flag |= ND_USEGSSNAME; 4986 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 4987 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4988 if (error != 0) 4989 return (error); 4990 error = nd->nd_repstat; 4991 m_freem(nd->nd_mrep); 4992 return (error); 4993 } 4994 4995 /* 4996 * Do the NFSv4.1 Destroy Client. 4997 */ 4998 int 4999 nfsrpc_destroyclient(struct nfsmount *nmp, struct nfsclclient *clp, 5000 struct ucred *cred, NFSPROC_T *p) 5001 { 5002 uint32_t *tl; 5003 struct nfsrv_descript nfsd; 5004 struct nfsrv_descript *nd = &nfsd; 5005 int error; 5006 struct nfsclsession *tsep; 5007 5008 nfscl_reqstart(nd, NFSPROC_DESTROYCLIENT, nmp, NULL, 0, NULL, NULL, 0, 5009 0); 5010 NFSM_BUILD(tl, uint32_t *, 2 * NFSX_UNSIGNED); 5011 tsep = nfsmnt_mdssession(nmp); 5012 *tl++ = tsep->nfsess_clientid.lval[0]; 5013 *tl = tsep->nfsess_clientid.lval[1]; 5014 nd->nd_flag |= ND_USEGSSNAME; 5015 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 5016 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 5017 if (error != 0) 5018 return (error); 5019 error = nd->nd_repstat; 5020 m_freem(nd->nd_mrep); 5021 return (error); 5022 } 5023 5024 /* 5025 * Do the NFSv4.1 LayoutGet. 5026 */ 5027 static int 5028 nfsrpc_layoutget(struct nfsmount *nmp, uint8_t *fhp, int fhlen, int iomode, 5029 uint64_t offset, uint64_t len, uint64_t minlen, int layouttype, 5030 int layoutlen, nfsv4stateid_t *stateidp, int *retonclosep, 5031 struct nfsclflayouthead *flhp, struct ucred *cred, NFSPROC_T *p, 5032 void *stuff) 5033 { 5034 struct nfsrv_descript nfsd, *nd = &nfsd; 5035 int error; 5036 5037 nfscl_reqstart(nd, NFSPROC_LAYOUTGET, nmp, fhp, fhlen, NULL, NULL, 0, 5038 0); 5039 nfsrv_setuplayoutget(nd, iomode, offset, len, minlen, stateidp, 5040 layouttype, layoutlen, 0); 5041 nd->nd_flag |= ND_USEGSSNAME; 5042 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 5043 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 5044 NFSCL_DEBUG(4, "layget err=%d st=%d\n", error, nd->nd_repstat); 5045 if (error != 0) 5046 return (error); 5047 if (nd->nd_repstat == 0) 5048 error = nfsrv_parselayoutget(nmp, nd, stateidp, retonclosep, 5049 flhp); 5050 if (error == 0 && nd->nd_repstat != 0) 5051 error = nd->nd_repstat; 5052 m_freem(nd->nd_mrep); 5053 return (error); 5054 } 5055 5056 /* 5057 * Do the NFSv4.1 Get Device Info. 5058 */ 5059 int 5060 nfsrpc_getdeviceinfo(struct nfsmount *nmp, uint8_t *deviceid, int layouttype, 5061 uint32_t *notifybitsp, struct nfscldevinfo **ndip, struct ucred *cred, 5062 NFSPROC_T *p) 5063 { 5064 uint32_t cnt, *tl, vers, minorvers; 5065 struct nfsrv_descript nfsd; 5066 struct nfsrv_descript *nd = &nfsd; 5067 struct sockaddr_in sin, ssin; 5068 struct sockaddr_in6 sin6, ssin6; 5069 struct nfsclds *dsp = NULL, **dspp, **gotdspp; 5070 struct nfscldevinfo *ndi; 5071 int addrcnt = 0, bitcnt, error, gotminor, gotvers, i, isudp, j; 5072 int stripecnt; 5073 uint8_t stripeindex; 5074 sa_family_t af, safilled; 5075 5076 ssin.sin_port = 0; /* To shut up compiler. */ 5077 ssin.sin_addr.s_addr = 0; /* ditto */ 5078 *ndip = NULL; 5079 ndi = NULL; 5080 gotdspp = NULL; 5081 nfscl_reqstart(nd, NFSPROC_GETDEVICEINFO, nmp, NULL, 0, NULL, NULL, 0, 5082 0); 5083 NFSM_BUILD(tl, uint32_t *, NFSX_V4DEVICEID + 3 * NFSX_UNSIGNED); 5084 NFSBCOPY(deviceid, tl, NFSX_V4DEVICEID); 5085 tl += (NFSX_V4DEVICEID / NFSX_UNSIGNED); 5086 *tl++ = txdr_unsigned(layouttype); 5087 *tl++ = txdr_unsigned(100000); 5088 if (notifybitsp != NULL && *notifybitsp != 0) { 5089 *tl = txdr_unsigned(1); /* One word of bits. */ 5090 NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED); 5091 *tl = txdr_unsigned(*notifybitsp); 5092 } else 5093 *tl = txdr_unsigned(0); 5094 nd->nd_flag |= ND_USEGSSNAME; 5095 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 5096 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 5097 if (error != 0) 5098 return (error); 5099 if (nd->nd_repstat == 0) { 5100 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED); 5101 if (layouttype != fxdr_unsigned(int, *tl)) 5102 printf("EEK! devinfo layout type not same!\n"); 5103 if (layouttype == NFSLAYOUT_NFSV4_1_FILES) { 5104 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 5105 stripecnt = fxdr_unsigned(int, *tl); 5106 NFSCL_DEBUG(4, "stripecnt=%d\n", stripecnt); 5107 if (stripecnt < 1 || stripecnt > 4096) { 5108 printf("pNFS File layout devinfo stripecnt %d:" 5109 " out of range\n", stripecnt); 5110 error = NFSERR_BADXDR; 5111 goto nfsmout; 5112 } 5113 NFSM_DISSECT(tl, uint32_t *, (stripecnt + 1) * 5114 NFSX_UNSIGNED); 5115 addrcnt = fxdr_unsigned(int, *(tl + stripecnt)); 5116 NFSCL_DEBUG(4, "addrcnt=%d\n", addrcnt); 5117 if (addrcnt < 1 || addrcnt > 128) { 5118 printf("NFS devinfo addrcnt %d: out of range\n", 5119 addrcnt); 5120 error = NFSERR_BADXDR; 5121 goto nfsmout; 5122 } 5123 5124 /* 5125 * Now we know how many stripe indices and addresses, so 5126 * we can allocate the structure the correct size. 5127 */ 5128 i = (stripecnt * sizeof(uint8_t)) / 5129 sizeof(struct nfsclds *) + 1; 5130 NFSCL_DEBUG(4, "stripeindices=%d\n", i); 5131 ndi = malloc(sizeof(*ndi) + (addrcnt + i) * 5132 sizeof(struct nfsclds *), M_NFSDEVINFO, M_WAITOK | 5133 M_ZERO); 5134 NFSBCOPY(deviceid, ndi->nfsdi_deviceid, 5135 NFSX_V4DEVICEID); 5136 ndi->nfsdi_refcnt = 0; 5137 ndi->nfsdi_flags = NFSDI_FILELAYOUT; 5138 ndi->nfsdi_stripecnt = stripecnt; 5139 ndi->nfsdi_addrcnt = addrcnt; 5140 /* Fill in the stripe indices. */ 5141 for (i = 0; i < stripecnt; i++) { 5142 stripeindex = fxdr_unsigned(uint8_t, *tl++); 5143 NFSCL_DEBUG(4, "stripeind=%d\n", stripeindex); 5144 if (stripeindex >= addrcnt) { 5145 printf("pNFS File Layout devinfo" 5146 " stripeindex %d: too big\n", 5147 (int)stripeindex); 5148 error = NFSERR_BADXDR; 5149 goto nfsmout; 5150 } 5151 nfsfldi_setstripeindex(ndi, i, stripeindex); 5152 } 5153 } else if (layouttype == NFSLAYOUT_FLEXFILE) { 5154 /* For Flex File, we only get one address list. */ 5155 ndi = malloc(sizeof(*ndi) + sizeof(struct nfsclds *), 5156 M_NFSDEVINFO, M_WAITOK | M_ZERO); 5157 NFSBCOPY(deviceid, ndi->nfsdi_deviceid, 5158 NFSX_V4DEVICEID); 5159 ndi->nfsdi_refcnt = 0; 5160 ndi->nfsdi_flags = NFSDI_FLEXFILE; 5161 addrcnt = ndi->nfsdi_addrcnt = 1; 5162 } 5163 5164 /* Now, dissect the server address(es). */ 5165 safilled = AF_UNSPEC; 5166 for (i = 0; i < addrcnt; i++) { 5167 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 5168 cnt = fxdr_unsigned(uint32_t, *tl); 5169 if (cnt == 0) { 5170 printf("NFS devinfo 0 len addrlist\n"); 5171 error = NFSERR_BADXDR; 5172 goto nfsmout; 5173 } 5174 dspp = nfsfldi_addr(ndi, i); 5175 safilled = AF_UNSPEC; 5176 for (j = 0; j < cnt; j++) { 5177 error = nfsv4_getipaddr(nd, &sin, &sin6, &af, 5178 &isudp); 5179 if (error != 0 && error != EPERM) { 5180 error = NFSERR_BADXDR; 5181 goto nfsmout; 5182 } 5183 if (error == 0 && isudp == 0) { 5184 /* 5185 * The priority is: 5186 * - Same address family. 5187 * Save the address and dspp, so that 5188 * the connection can be done after 5189 * parsing is complete. 5190 */ 5191 if (safilled == AF_UNSPEC || 5192 (af == nmp->nm_nam->sa_family && 5193 safilled != nmp->nm_nam->sa_family) 5194 ) { 5195 if (af == AF_INET) 5196 ssin = sin; 5197 else 5198 ssin6 = sin6; 5199 safilled = af; 5200 gotdspp = dspp; 5201 } 5202 } 5203 } 5204 } 5205 5206 gotvers = NFS_VER4; /* Default NFSv4.1 for File Layout. */ 5207 gotminor = NFSV41_MINORVERSION; 5208 /* For Flex File, we will take one of the versions to use. */ 5209 if (layouttype == NFSLAYOUT_FLEXFILE) { 5210 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 5211 j = fxdr_unsigned(int, *tl); 5212 if (j < 1 || j > NFSDEV_MAXVERS) { 5213 printf("pNFS: too many versions\n"); 5214 error = NFSERR_BADXDR; 5215 goto nfsmout; 5216 } 5217 gotvers = 0; 5218 gotminor = 0; 5219 for (i = 0; i < j; i++) { 5220 NFSM_DISSECT(tl, uint32_t *, 5 * NFSX_UNSIGNED); 5221 vers = fxdr_unsigned(uint32_t, *tl++); 5222 minorvers = fxdr_unsigned(uint32_t, *tl++); 5223 if (vers == NFS_VER3) 5224 minorvers = 0; 5225 if ((vers == NFS_VER4 && ((minorvers == 5226 NFSV41_MINORVERSION && gotminor == 0) || 5227 minorvers == NFSV42_MINORVERSION)) || 5228 (vers == NFS_VER3 && gotvers == 0)) { 5229 gotvers = vers; 5230 gotminor = minorvers; 5231 /* We'll take this one. */ 5232 ndi->nfsdi_versindex = i; 5233 ndi->nfsdi_vers = vers; 5234 ndi->nfsdi_minorvers = minorvers; 5235 ndi->nfsdi_rsize = fxdr_unsigned( 5236 uint32_t, *tl++); 5237 ndi->nfsdi_wsize = fxdr_unsigned( 5238 uint32_t, *tl++); 5239 if (*tl == newnfs_true) 5240 ndi->nfsdi_flags |= 5241 NFSDI_TIGHTCOUPLED; 5242 else 5243 ndi->nfsdi_flags &= 5244 ~NFSDI_TIGHTCOUPLED; 5245 } 5246 } 5247 if (gotvers == 0) { 5248 printf("pNFS: no NFSv3, NFSv4.1 or NFSv4.2\n"); 5249 error = NFSERR_BADXDR; 5250 goto nfsmout; 5251 } 5252 } 5253 5254 /* And the notify bits. */ 5255 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 5256 bitcnt = fxdr_unsigned(int, *tl); 5257 if (bitcnt > 0) { 5258 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 5259 if (notifybitsp != NULL) 5260 *notifybitsp = 5261 fxdr_unsigned(uint32_t, *tl); 5262 } 5263 if (safilled != AF_UNSPEC) { 5264 KASSERT(ndi != NULL, ("ndi is NULL")); 5265 *ndip = ndi; 5266 } else 5267 error = EPERM; 5268 if (error == 0) { 5269 /* 5270 * Now we can do a TCP connection for the correct 5271 * NFS version and IP address. 5272 */ 5273 error = nfsrpc_fillsa(nmp, &ssin, &ssin6, safilled, 5274 gotvers, gotminor, &dsp, p); 5275 } 5276 if (error == 0) { 5277 KASSERT(gotdspp != NULL, ("gotdspp is NULL")); 5278 *gotdspp = dsp; 5279 } 5280 } 5281 if (nd->nd_repstat != 0 && error == 0) 5282 error = nd->nd_repstat; 5283 nfsmout: 5284 if (error != 0 && ndi != NULL) 5285 nfscl_freedevinfo(ndi); 5286 m_freem(nd->nd_mrep); 5287 return (error); 5288 } 5289 5290 /* 5291 * Do the NFSv4.1 LayoutCommit. 5292 */ 5293 int 5294 nfsrpc_layoutcommit(struct nfsmount *nmp, uint8_t *fh, int fhlen, int reclaim, 5295 uint64_t off, uint64_t len, uint64_t lastbyte, nfsv4stateid_t *stateidp, 5296 int layouttype, struct ucred *cred, NFSPROC_T *p, void *stuff) 5297 { 5298 uint32_t *tl; 5299 struct nfsrv_descript nfsd, *nd = &nfsd; 5300 int error; 5301 5302 nfscl_reqstart(nd, NFSPROC_LAYOUTCOMMIT, nmp, fh, fhlen, NULL, NULL, 5303 0, 0); 5304 NFSM_BUILD(tl, uint32_t *, 5 * NFSX_UNSIGNED + 3 * NFSX_HYPER + 5305 NFSX_STATEID); 5306 txdr_hyper(off, tl); 5307 tl += 2; 5308 txdr_hyper(len, tl); 5309 tl += 2; 5310 if (reclaim != 0) 5311 *tl++ = newnfs_true; 5312 else 5313 *tl++ = newnfs_false; 5314 *tl++ = txdr_unsigned(stateidp->seqid); 5315 *tl++ = stateidp->other[0]; 5316 *tl++ = stateidp->other[1]; 5317 *tl++ = stateidp->other[2]; 5318 *tl++ = newnfs_true; 5319 if (lastbyte < off) 5320 lastbyte = off; 5321 else if (lastbyte >= (off + len)) 5322 lastbyte = off + len - 1; 5323 txdr_hyper(lastbyte, tl); 5324 tl += 2; 5325 *tl++ = newnfs_false; 5326 *tl++ = txdr_unsigned(layouttype); 5327 /* All supported layouts are 0 length. */ 5328 *tl = txdr_unsigned(0); 5329 nd->nd_flag |= ND_USEGSSNAME; 5330 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 5331 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 5332 if (error != 0) 5333 return (error); 5334 error = nd->nd_repstat; 5335 m_freem(nd->nd_mrep); 5336 return (error); 5337 } 5338 5339 /* 5340 * Do the NFSv4.1 LayoutReturn. 5341 */ 5342 int 5343 nfsrpc_layoutreturn(struct nfsmount *nmp, uint8_t *fh, int fhlen, int reclaim, 5344 int layouttype, uint32_t iomode, int layoutreturn, uint64_t offset, 5345 uint64_t len, nfsv4stateid_t *stateidp, struct ucred *cred, NFSPROC_T *p, 5346 uint32_t stat, uint32_t op, char *devid) 5347 { 5348 uint32_t *tl; 5349 struct nfsrv_descript nfsd, *nd = &nfsd; 5350 uint64_t tu64; 5351 int error; 5352 5353 nfscl_reqstart(nd, NFSPROC_LAYOUTRETURN, nmp, fh, fhlen, NULL, NULL, 5354 0, 0); 5355 NFSM_BUILD(tl, uint32_t *, 4 * NFSX_UNSIGNED); 5356 if (reclaim != 0) 5357 *tl++ = newnfs_true; 5358 else 5359 *tl++ = newnfs_false; 5360 *tl++ = txdr_unsigned(layouttype); 5361 *tl++ = txdr_unsigned(iomode); 5362 *tl = txdr_unsigned(layoutreturn); 5363 if (layoutreturn == NFSLAYOUTRETURN_FILE) { 5364 NFSM_BUILD(tl, uint32_t *, 2 * NFSX_HYPER + NFSX_STATEID + 5365 NFSX_UNSIGNED); 5366 txdr_hyper(offset, tl); 5367 tl += 2; 5368 txdr_hyper(len, tl); 5369 tl += 2; 5370 NFSCL_DEBUG(4, "layoutret stseq=%d\n", (int)stateidp->seqid); 5371 *tl++ = txdr_unsigned(stateidp->seqid); 5372 *tl++ = stateidp->other[0]; 5373 *tl++ = stateidp->other[1]; 5374 *tl++ = stateidp->other[2]; 5375 if (layouttype == NFSLAYOUT_NFSV4_1_FILES) 5376 *tl = txdr_unsigned(0); 5377 else if (layouttype == NFSLAYOUT_FLEXFILE) { 5378 if (stat != 0) { 5379 *tl = txdr_unsigned(2 * NFSX_HYPER + 5380 NFSX_STATEID + NFSX_V4DEVICEID + 5 * 5381 NFSX_UNSIGNED); 5382 NFSM_BUILD(tl, uint32_t *, 2 * NFSX_HYPER + 5383 NFSX_STATEID + NFSX_V4DEVICEID + 5 * 5384 NFSX_UNSIGNED); 5385 *tl++ = txdr_unsigned(1); /* One error. */ 5386 tu64 = 0; /* Offset. */ 5387 txdr_hyper(tu64, tl); tl += 2; 5388 tu64 = UINT64_MAX; /* Length. */ 5389 txdr_hyper(tu64, tl); tl += 2; 5390 NFSBCOPY(stateidp, tl, NFSX_STATEID); 5391 tl += (NFSX_STATEID / NFSX_UNSIGNED); 5392 *tl++ = txdr_unsigned(1); /* One error. */ 5393 NFSBCOPY(devid, tl, NFSX_V4DEVICEID); 5394 tl += (NFSX_V4DEVICEID / NFSX_UNSIGNED); 5395 *tl++ = txdr_unsigned(stat); 5396 *tl++ = txdr_unsigned(op); 5397 } else { 5398 *tl = txdr_unsigned(2 * NFSX_UNSIGNED); 5399 NFSM_BUILD(tl, uint32_t *, 2 * NFSX_UNSIGNED); 5400 /* No ioerrs. */ 5401 *tl++ = 0; 5402 } 5403 *tl = 0; /* No stats yet. */ 5404 } 5405 } 5406 nd->nd_flag |= ND_USEGSSNAME; 5407 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 5408 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 5409 if (error != 0) 5410 return (error); 5411 if (nd->nd_repstat == 0) { 5412 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 5413 if (*tl != 0) { 5414 NFSM_DISSECT(tl, uint32_t *, NFSX_STATEID); 5415 stateidp->seqid = fxdr_unsigned(uint32_t, *tl++); 5416 stateidp->other[0] = *tl++; 5417 stateidp->other[1] = *tl++; 5418 stateidp->other[2] = *tl; 5419 } 5420 } else 5421 error = nd->nd_repstat; 5422 nfsmout: 5423 m_freem(nd->nd_mrep); 5424 return (error); 5425 } 5426 5427 /* 5428 * Acquire a layout and devinfo, if possible. The caller must have acquired 5429 * a reference count on the nfsclclient structure before calling this. 5430 * Return the layout in lypp with a reference count on it, if successful. 5431 */ 5432 static int 5433 nfsrpc_getlayout(struct nfsmount *nmp, vnode_t vp, struct nfsfh *nfhp, 5434 int iomode, uint32_t *notifybitsp, nfsv4stateid_t *stateidp, uint64_t off, 5435 struct nfscllayout **lypp, struct ucred *cred, NFSPROC_T *p) 5436 { 5437 struct nfscllayout *lyp; 5438 struct nfsclflayout *flp; 5439 struct nfsclflayouthead flh; 5440 int error = 0, islocked, layoutlen, layouttype, recalled, retonclose; 5441 nfsv4stateid_t stateid; 5442 struct nfsclsession *tsep; 5443 5444 *lypp = NULL; 5445 if (NFSHASFLEXFILE(nmp)) 5446 layouttype = NFSLAYOUT_FLEXFILE; 5447 else 5448 layouttype = NFSLAYOUT_NFSV4_1_FILES; 5449 /* 5450 * If lyp is returned non-NULL, there will be a refcnt (shared lock) 5451 * on it, iff flp != NULL or a lock (exclusive lock) on it iff 5452 * flp == NULL. 5453 */ 5454 lyp = nfscl_getlayout(nmp->nm_clp, nfhp->nfh_fh, nfhp->nfh_len, 5455 off, &flp, &recalled); 5456 islocked = 0; 5457 if (lyp == NULL || flp == NULL) { 5458 if (recalled != 0) 5459 return (EIO); 5460 LIST_INIT(&flh); 5461 tsep = nfsmnt_mdssession(nmp); 5462 layoutlen = tsep->nfsess_maxcache - 5463 (NFSX_STATEID + 3 * NFSX_UNSIGNED); 5464 if (lyp == NULL) { 5465 stateid.seqid = 0; 5466 stateid.other[0] = stateidp->other[0]; 5467 stateid.other[1] = stateidp->other[1]; 5468 stateid.other[2] = stateidp->other[2]; 5469 error = nfsrpc_layoutget(nmp, nfhp->nfh_fh, 5470 nfhp->nfh_len, iomode, (uint64_t)0, UINT64_MAX, 5471 (uint64_t)0, layouttype, layoutlen, &stateid, 5472 &retonclose, &flh, cred, p, NULL); 5473 } else { 5474 islocked = 1; 5475 stateid.seqid = lyp->nfsly_stateid.seqid; 5476 stateid.other[0] = lyp->nfsly_stateid.other[0]; 5477 stateid.other[1] = lyp->nfsly_stateid.other[1]; 5478 stateid.other[2] = lyp->nfsly_stateid.other[2]; 5479 error = nfsrpc_layoutget(nmp, nfhp->nfh_fh, 5480 nfhp->nfh_len, iomode, off, UINT64_MAX, 5481 (uint64_t)0, layouttype, layoutlen, &stateid, 5482 &retonclose, &flh, cred, p, NULL); 5483 } 5484 error = nfsrpc_layoutgetres(nmp, vp, nfhp->nfh_fh, 5485 nfhp->nfh_len, &stateid, retonclose, notifybitsp, &lyp, 5486 &flh, layouttype, error, NULL, cred, p); 5487 if (error == 0) 5488 *lypp = lyp; 5489 else if (islocked != 0) 5490 nfscl_rellayout(lyp, 1); 5491 } else 5492 *lypp = lyp; 5493 return (error); 5494 } 5495 5496 /* 5497 * Do a TCP connection plus exchange id and create session. 5498 * If successful, a "struct nfsclds" is linked into the list for the 5499 * mount point and a pointer to it is returned. 5500 */ 5501 static int 5502 nfsrpc_fillsa(struct nfsmount *nmp, struct sockaddr_in *sin, 5503 struct sockaddr_in6 *sin6, sa_family_t af, int vers, int minorvers, 5504 struct nfsclds **dspp, NFSPROC_T *p) 5505 { 5506 struct sockaddr_in *msad, *sad; 5507 struct sockaddr_in6 *msad6, *sad6; 5508 struct nfsclclient *clp; 5509 struct nfssockreq *nrp; 5510 struct nfsclds *dsp, *tdsp; 5511 int error, firsttry; 5512 enum nfsclds_state retv; 5513 uint32_t sequenceid = 0; 5514 5515 KASSERT(nmp->nm_sockreq.nr_cred != NULL, 5516 ("nfsrpc_fillsa: NULL nr_cred")); 5517 NFSLOCKCLSTATE(); 5518 clp = nmp->nm_clp; 5519 NFSUNLOCKCLSTATE(); 5520 if (clp == NULL) 5521 return (EPERM); 5522 if (af == AF_INET) { 5523 NFSLOCKMNT(nmp); 5524 /* 5525 * Check to see if we already have a session for this 5526 * address that is usable for a DS. 5527 * Note that the MDS's address is in a different place 5528 * than the sessions already acquired for DS's. 5529 */ 5530 msad = (struct sockaddr_in *)nmp->nm_sockreq.nr_nam; 5531 tdsp = TAILQ_FIRST(&nmp->nm_sess); 5532 while (tdsp != NULL) { 5533 if (msad != NULL && msad->sin_family == AF_INET && 5534 sin->sin_addr.s_addr == msad->sin_addr.s_addr && 5535 sin->sin_port == msad->sin_port && 5536 (tdsp->nfsclds_flags & NFSCLDS_DS) != 0 && 5537 tdsp->nfsclds_sess.nfsess_defunct == 0) { 5538 *dspp = tdsp; 5539 NFSUNLOCKMNT(nmp); 5540 NFSCL_DEBUG(4, "fnd same addr\n"); 5541 return (0); 5542 } 5543 tdsp = TAILQ_NEXT(tdsp, nfsclds_list); 5544 if (tdsp != NULL && tdsp->nfsclds_sockp != NULL) 5545 msad = (struct sockaddr_in *) 5546 tdsp->nfsclds_sockp->nr_nam; 5547 else 5548 msad = NULL; 5549 } 5550 NFSUNLOCKMNT(nmp); 5551 5552 /* No IP address match, so look for new/trunked one. */ 5553 sad = malloc(sizeof(*sad), M_SONAME, M_WAITOK | M_ZERO); 5554 sad->sin_len = sizeof(*sad); 5555 sad->sin_family = AF_INET; 5556 sad->sin_port = sin->sin_port; 5557 sad->sin_addr.s_addr = sin->sin_addr.s_addr; 5558 nrp = malloc(sizeof(*nrp), M_NFSSOCKREQ, M_WAITOK | M_ZERO); 5559 nrp->nr_nam = (struct sockaddr *)sad; 5560 } else if (af == AF_INET6) { 5561 NFSLOCKMNT(nmp); 5562 /* 5563 * Check to see if we already have a session for this 5564 * address that is usable for a DS. 5565 * Note that the MDS's address is in a different place 5566 * than the sessions already acquired for DS's. 5567 */ 5568 msad6 = (struct sockaddr_in6 *)nmp->nm_sockreq.nr_nam; 5569 tdsp = TAILQ_FIRST(&nmp->nm_sess); 5570 while (tdsp != NULL) { 5571 if (msad6 != NULL && msad6->sin6_family == AF_INET6 && 5572 IN6_ARE_ADDR_EQUAL(&sin6->sin6_addr, 5573 &msad6->sin6_addr) && 5574 sin6->sin6_port == msad6->sin6_port && 5575 (tdsp->nfsclds_flags & NFSCLDS_DS) != 0 && 5576 tdsp->nfsclds_sess.nfsess_defunct == 0) { 5577 *dspp = tdsp; 5578 NFSUNLOCKMNT(nmp); 5579 return (0); 5580 } 5581 tdsp = TAILQ_NEXT(tdsp, nfsclds_list); 5582 if (tdsp != NULL && tdsp->nfsclds_sockp != NULL) 5583 msad6 = (struct sockaddr_in6 *) 5584 tdsp->nfsclds_sockp->nr_nam; 5585 else 5586 msad6 = NULL; 5587 } 5588 NFSUNLOCKMNT(nmp); 5589 5590 /* No IP address match, so look for new/trunked one. */ 5591 sad6 = malloc(sizeof(*sad6), M_SONAME, M_WAITOK | M_ZERO); 5592 sad6->sin6_len = sizeof(*sad6); 5593 sad6->sin6_family = AF_INET6; 5594 sad6->sin6_port = sin6->sin6_port; 5595 NFSBCOPY(&sin6->sin6_addr, &sad6->sin6_addr, 5596 sizeof(struct in6_addr)); 5597 nrp = malloc(sizeof(*nrp), M_NFSSOCKREQ, M_WAITOK | M_ZERO); 5598 nrp->nr_nam = (struct sockaddr *)sad6; 5599 } else 5600 return (EPERM); 5601 5602 nrp->nr_sotype = SOCK_STREAM; 5603 mtx_init(&nrp->nr_mtx, "nfssock", NULL, MTX_DEF); 5604 nrp->nr_prog = NFS_PROG; 5605 nrp->nr_vers = vers; 5606 5607 /* 5608 * Use the credentials that were used for the mount, which are 5609 * in nmp->nm_sockreq.nr_cred for newnfs_connect() etc. 5610 * Ref. counting the credentials with crhold() is probably not 5611 * necessary, since nm_sockreq.nr_cred won't be crfree()'d until 5612 * unmount, but I did it anyhow. 5613 */ 5614 nrp->nr_cred = crhold(nmp->nm_sockreq.nr_cred); 5615 error = newnfs_connect(nmp, nrp, NULL, p, 0, false); 5616 NFSCL_DEBUG(3, "DS connect=%d\n", error); 5617 5618 dsp = NULL; 5619 /* Now, do the exchangeid and create session. */ 5620 if (error == 0) { 5621 if (vers == NFS_VER4) { 5622 firsttry = 0; 5623 do { 5624 error = nfsrpc_exchangeid(nmp, clp, nrp, 5625 minorvers, NFSV4EXCH_USEPNFSDS, &dsp, 5626 nrp->nr_cred, p); 5627 NFSCL_DEBUG(3, "DS exchangeid=%d\n", error); 5628 if (error == NFSERR_MINORVERMISMATCH) 5629 minorvers = NFSV42_MINORVERSION; 5630 } while (error == NFSERR_MINORVERMISMATCH && 5631 firsttry++ == 0); 5632 if (error != 0) 5633 newnfs_disconnect(nrp); 5634 } else { 5635 dsp = malloc(sizeof(struct nfsclds), M_NFSCLDS, 5636 M_WAITOK | M_ZERO); 5637 dsp->nfsclds_flags |= NFSCLDS_DS; 5638 dsp->nfsclds_expire = INT32_MAX; /* No renews needed. */ 5639 mtx_init(&dsp->nfsclds_mtx, "nfsds", NULL, MTX_DEF); 5640 mtx_init(&dsp->nfsclds_sess.nfsess_mtx, "nfssession", 5641 NULL, MTX_DEF); 5642 } 5643 } 5644 if (error == 0) { 5645 dsp->nfsclds_sockp = nrp; 5646 if (vers == NFS_VER4) { 5647 NFSLOCKMNT(nmp); 5648 retv = nfscl_getsameserver(nmp, dsp, &tdsp, 5649 &sequenceid); 5650 NFSCL_DEBUG(3, "getsame ret=%d\n", retv); 5651 if (retv == NFSDSP_USETHISSESSION && 5652 nfscl_dssameconn != 0) { 5653 NFSLOCKDS(tdsp); 5654 tdsp->nfsclds_flags |= NFSCLDS_SAMECONN; 5655 NFSUNLOCKDS(tdsp); 5656 NFSUNLOCKMNT(nmp); 5657 /* 5658 * If there is already a session for this 5659 * server, use it. 5660 */ 5661 (void)newnfs_disconnect(nrp); 5662 nfscl_freenfsclds(dsp); 5663 *dspp = tdsp; 5664 return (0); 5665 } 5666 if (retv == NFSDSP_NOTFOUND) 5667 sequenceid = 5668 dsp->nfsclds_sess.nfsess_sequenceid; 5669 NFSUNLOCKMNT(nmp); 5670 error = nfsrpc_createsession(nmp, &dsp->nfsclds_sess, 5671 nrp, dsp, sequenceid, 0, nrp->nr_cred, p); 5672 NFSCL_DEBUG(3, "DS createsess=%d\n", error); 5673 } 5674 } else { 5675 NFSFREECRED(nrp->nr_cred); 5676 NFSFREEMUTEX(&nrp->nr_mtx); 5677 free(nrp->nr_nam, M_SONAME); 5678 free(nrp, M_NFSSOCKREQ); 5679 } 5680 if (error == 0) { 5681 NFSCL_DEBUG(3, "add DS session\n"); 5682 /* 5683 * Put it at the end of the list. That way the list 5684 * is ordered by when the entry was added. This matters 5685 * since the one done first is the one that should be 5686 * used for sequencid'ing any subsequent create sessions. 5687 */ 5688 NFSLOCKMNT(nmp); 5689 TAILQ_INSERT_TAIL(&nmp->nm_sess, dsp, nfsclds_list); 5690 NFSUNLOCKMNT(nmp); 5691 *dspp = dsp; 5692 } else if (dsp != NULL) { 5693 newnfs_disconnect(nrp); 5694 nfscl_freenfsclds(dsp); 5695 } 5696 return (error); 5697 } 5698 5699 /* 5700 * Do the NFSv4.1 Reclaim Complete. 5701 */ 5702 int 5703 nfsrpc_reclaimcomplete(struct nfsmount *nmp, struct ucred *cred, NFSPROC_T *p) 5704 { 5705 uint32_t *tl; 5706 struct nfsrv_descript nfsd; 5707 struct nfsrv_descript *nd = &nfsd; 5708 int error; 5709 5710 nfscl_reqstart(nd, NFSPROC_RECLAIMCOMPL, nmp, NULL, 0, NULL, NULL, 0, 5711 0); 5712 NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED); 5713 *tl = newnfs_false; 5714 nd->nd_flag |= ND_USEGSSNAME; 5715 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 5716 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 5717 if (error != 0) 5718 return (error); 5719 error = nd->nd_repstat; 5720 m_freem(nd->nd_mrep); 5721 return (error); 5722 } 5723 5724 /* 5725 * Initialize the slot tables for a session. 5726 */ 5727 static void 5728 nfscl_initsessionslots(struct nfsclsession *sep) 5729 { 5730 int i; 5731 5732 for (i = 0; i < NFSV4_CBSLOTS; i++) { 5733 if (sep->nfsess_cbslots[i].nfssl_reply != NULL) 5734 m_freem(sep->nfsess_cbslots[i].nfssl_reply); 5735 NFSBZERO(&sep->nfsess_cbslots[i], sizeof(struct nfsslot)); 5736 } 5737 for (i = 0; i < 64; i++) 5738 sep->nfsess_slotseq[i] = 0; 5739 sep->nfsess_slots = 0; 5740 } 5741 5742 /* 5743 * Called to try and do an I/O operation via an NFSv4.1 Data Server (DS). 5744 */ 5745 int 5746 nfscl_doiods(vnode_t vp, struct uio *uiop, int *iomode, int *must_commit, 5747 uint32_t rwaccess, int docommit, struct ucred *cred, NFSPROC_T *p) 5748 { 5749 struct nfsnode *np = VTONFS(vp); 5750 struct nfsmount *nmp = VFSTONFS(vp->v_mount); 5751 struct nfscllayout *layp; 5752 struct nfscldevinfo *dip; 5753 struct nfsclflayout *rflp; 5754 struct mbuf *m, *m2; 5755 struct nfsclwritedsdorpc *drpc, *tdrpc; 5756 nfsv4stateid_t stateid; 5757 struct ucred *newcred; 5758 uint64_t lastbyte, len, off, oresid, xfer; 5759 int eof, error, firstmirror, i, iolaymode, mirrorcnt, recalled, timo; 5760 void *lckp; 5761 uint8_t *dev; 5762 void *iovbase = NULL; 5763 size_t iovlen = 0; 5764 off_t offs = 0; 5765 ssize_t resid = 0; 5766 5767 if (!NFSHASPNFS(nmp) || nfscl_enablecallb == 0 || nfs_numnfscbd == 0 || 5768 (np->n_flag & NNOLAYOUT) != 0) 5769 return (EIO); 5770 /* Now, get a reference cnt on the clientid for this mount. */ 5771 if (nfscl_getref(nmp) == 0) 5772 return (EIO); 5773 5774 /* Find an appropriate stateid. */ 5775 newcred = NFSNEWCRED(cred); 5776 error = nfscl_getstateid(vp, np->n_fhp->nfh_fh, np->n_fhp->nfh_len, 5777 rwaccess, 1, newcred, p, &stateid, &lckp); 5778 if (error != 0) { 5779 NFSFREECRED(newcred); 5780 nfscl_relref(nmp); 5781 return (error); 5782 } 5783 /* Search for a layout for this file. */ 5784 off = uiop->uio_offset; 5785 layp = nfscl_getlayout(nmp->nm_clp, np->n_fhp->nfh_fh, 5786 np->n_fhp->nfh_len, off, &rflp, &recalled); 5787 if (layp == NULL || rflp == NULL) { 5788 if (recalled != 0) { 5789 NFSFREECRED(newcred); 5790 nfscl_relref(nmp); 5791 return (EIO); 5792 } 5793 if (layp != NULL) { 5794 nfscl_rellayout(layp, (rflp == NULL) ? 1 : 0); 5795 layp = NULL; 5796 } 5797 /* Try and get a Layout, if it is supported. */ 5798 if (rwaccess == NFSV4OPEN_ACCESSWRITE || 5799 (np->n_flag & NWRITEOPENED) != 0) 5800 iolaymode = NFSLAYOUTIOMODE_RW; 5801 else 5802 iolaymode = NFSLAYOUTIOMODE_READ; 5803 error = nfsrpc_getlayout(nmp, vp, np->n_fhp, iolaymode, 5804 NULL, &stateid, off, &layp, newcred, p); 5805 if (error != 0) { 5806 NFSLOCKNODE(np); 5807 np->n_flag |= NNOLAYOUT; 5808 NFSUNLOCKNODE(np); 5809 if (lckp != NULL) 5810 nfscl_lockderef(lckp); 5811 NFSFREECRED(newcred); 5812 if (layp != NULL) 5813 nfscl_rellayout(layp, 0); 5814 nfscl_relref(nmp); 5815 return (error); 5816 } 5817 } 5818 5819 /* 5820 * Loop around finding a layout that works for the first part of 5821 * this I/O operation, and then call the function that actually 5822 * does the RPC. 5823 */ 5824 eof = 0; 5825 len = (uint64_t)uiop->uio_resid; 5826 while (len > 0 && error == 0 && eof == 0) { 5827 off = uiop->uio_offset; 5828 error = nfscl_findlayoutforio(layp, off, rwaccess, &rflp); 5829 if (error == 0) { 5830 oresid = xfer = (uint64_t)uiop->uio_resid; 5831 if (xfer > (rflp->nfsfl_end - rflp->nfsfl_off)) 5832 xfer = rflp->nfsfl_end - rflp->nfsfl_off; 5833 /* 5834 * For Flex File layout with mirrored DSs, select one 5835 * of them at random for reads. For writes and commits, 5836 * do all mirrors. 5837 */ 5838 m = NULL; 5839 tdrpc = drpc = NULL; 5840 firstmirror = 0; 5841 mirrorcnt = 1; 5842 if ((layp->nfsly_flags & NFSLY_FLEXFILE) != 0 && 5843 (mirrorcnt = rflp->nfsfl_mirrorcnt) > 1) { 5844 if (rwaccess == NFSV4OPEN_ACCESSREAD) { 5845 firstmirror = arc4random() % mirrorcnt; 5846 mirrorcnt = firstmirror + 1; 5847 } else { 5848 if (docommit == 0) { 5849 /* 5850 * Save values, so uiop can be 5851 * rolled back upon a write 5852 * error. 5853 */ 5854 offs = uiop->uio_offset; 5855 resid = uiop->uio_resid; 5856 iovbase = 5857 uiop->uio_iov->iov_base; 5858 iovlen = uiop->uio_iov->iov_len; 5859 m = nfsm_uiombuflist(uiop, len, 5860 0); 5861 } 5862 tdrpc = drpc = malloc(sizeof(*drpc) * 5863 (mirrorcnt - 1), M_TEMP, M_WAITOK | 5864 M_ZERO); 5865 } 5866 } 5867 for (i = firstmirror; i < mirrorcnt && error == 0; i++){ 5868 m2 = NULL; 5869 if (m != NULL && i < mirrorcnt - 1) 5870 m2 = m_copym(m, 0, M_COPYALL, M_WAITOK); 5871 else { 5872 m2 = m; 5873 m = NULL; 5874 } 5875 if ((layp->nfsly_flags & NFSLY_FLEXFILE) != 0) { 5876 dev = rflp->nfsfl_ffm[i].dev; 5877 dip = nfscl_getdevinfo(nmp->nm_clp, dev, 5878 rflp->nfsfl_ffm[i].devp); 5879 } else { 5880 dev = rflp->nfsfl_dev; 5881 dip = nfscl_getdevinfo(nmp->nm_clp, dev, 5882 rflp->nfsfl_devp); 5883 } 5884 if (dip != NULL) { 5885 if ((rflp->nfsfl_flags & NFSFL_FLEXFILE) 5886 != 0) 5887 error = nfscl_dofflayoutio(vp, 5888 uiop, iomode, must_commit, 5889 &eof, &stateid, rwaccess, 5890 dip, layp, rflp, off, xfer, 5891 i, docommit, m2, tdrpc, 5892 newcred, p); 5893 else 5894 error = nfscl_doflayoutio(vp, 5895 uiop, iomode, must_commit, 5896 &eof, &stateid, rwaccess, 5897 dip, layp, rflp, off, xfer, 5898 docommit, newcred, p); 5899 nfscl_reldevinfo(dip); 5900 } else { 5901 if (m2 != NULL) 5902 m_freem(m2); 5903 error = EIO; 5904 } 5905 tdrpc++; 5906 } 5907 if (m != NULL) 5908 m_freem(m); 5909 tdrpc = drpc; 5910 timo = hz / 50; /* Wait for 20msec. */ 5911 if (timo < 1) 5912 timo = 1; 5913 for (i = firstmirror; i < mirrorcnt - 1 && 5914 tdrpc != NULL; i++, tdrpc++) { 5915 /* 5916 * For the unused drpc entries, both inprog and 5917 * err == 0, so this loop won't break. 5918 */ 5919 while (tdrpc->inprog != 0 && tdrpc->done == 0) 5920 tsleep(&tdrpc->tsk, PVFS, "clrpcio", 5921 timo); 5922 if (error == 0 && tdrpc->err != 0) 5923 error = tdrpc->err; 5924 } 5925 free(drpc, M_TEMP); 5926 if (error == 0) { 5927 if (mirrorcnt > 1 && rwaccess == 5928 NFSV4OPEN_ACCESSWRITE && docommit == 0) { 5929 NFSLOCKCLSTATE(); 5930 layp->nfsly_flags |= NFSLY_WRITTEN; 5931 NFSUNLOCKCLSTATE(); 5932 } 5933 lastbyte = off + xfer - 1; 5934 NFSLOCKCLSTATE(); 5935 if (lastbyte > layp->nfsly_lastbyte) 5936 layp->nfsly_lastbyte = lastbyte; 5937 NFSUNLOCKCLSTATE(); 5938 } else if (error == NFSERR_OPENMODE && 5939 rwaccess == NFSV4OPEN_ACCESSREAD) { 5940 NFSLOCKMNT(nmp); 5941 nmp->nm_state |= NFSSTA_OPENMODE; 5942 NFSUNLOCKMNT(nmp); 5943 } else 5944 error = EIO; 5945 if (error == 0) 5946 len -= (oresid - (uint64_t)uiop->uio_resid); 5947 else if (mirrorcnt > 1 && rwaccess == 5948 NFSV4OPEN_ACCESSWRITE && docommit == 0) { 5949 /* 5950 * In case the rpc gets retried, roll the 5951 * uio fields changed by nfsm_uiombuflist() 5952 * back. 5953 */ 5954 uiop->uio_offset = offs; 5955 uiop->uio_resid = resid; 5956 uiop->uio_iov->iov_base = iovbase; 5957 uiop->uio_iov->iov_len = iovlen; 5958 } 5959 } 5960 } 5961 if (lckp != NULL) 5962 nfscl_lockderef(lckp); 5963 NFSFREECRED(newcred); 5964 nfscl_rellayout(layp, 0); 5965 nfscl_relref(nmp); 5966 return (error); 5967 } 5968 5969 /* 5970 * Find a file layout that will handle the first bytes of the requested 5971 * range and return the information from it needed to the I/O operation. 5972 */ 5973 int 5974 nfscl_findlayoutforio(struct nfscllayout *lyp, uint64_t off, uint32_t rwaccess, 5975 struct nfsclflayout **retflpp) 5976 { 5977 struct nfsclflayout *flp, *nflp, *rflp; 5978 uint32_t rw; 5979 5980 rflp = NULL; 5981 rw = rwaccess; 5982 /* For reading, do the Read list first and then the Write list. */ 5983 do { 5984 if (rw == NFSV4OPEN_ACCESSREAD) 5985 flp = LIST_FIRST(&lyp->nfsly_flayread); 5986 else 5987 flp = LIST_FIRST(&lyp->nfsly_flayrw); 5988 while (flp != NULL) { 5989 nflp = LIST_NEXT(flp, nfsfl_list); 5990 if (flp->nfsfl_off > off) 5991 break; 5992 if (flp->nfsfl_end > off && 5993 (rflp == NULL || rflp->nfsfl_end < flp->nfsfl_end)) 5994 rflp = flp; 5995 flp = nflp; 5996 } 5997 if (rw == NFSV4OPEN_ACCESSREAD) 5998 rw = NFSV4OPEN_ACCESSWRITE; 5999 else 6000 rw = 0; 6001 } while (rw != 0); 6002 if (rflp != NULL) { 6003 /* This one covers the most bytes starting at off. */ 6004 *retflpp = rflp; 6005 return (0); 6006 } 6007 return (EIO); 6008 } 6009 6010 /* 6011 * Do I/O using an NFSv4.1 or NFSv4.2 file layout. 6012 */ 6013 static int 6014 nfscl_doflayoutio(vnode_t vp, struct uio *uiop, int *iomode, int *must_commit, 6015 int *eofp, nfsv4stateid_t *stateidp, int rwflag, struct nfscldevinfo *dp, 6016 struct nfscllayout *lyp, struct nfsclflayout *flp, uint64_t off, 6017 uint64_t len, int docommit, struct ucred *cred, NFSPROC_T *p) 6018 { 6019 uint64_t io_off, rel_off, stripe_unit_size, transfer, xfer; 6020 int commit_thru_mds, error, stripe_index, stripe_pos, minorvers; 6021 struct nfsnode *np; 6022 struct nfsfh *fhp; 6023 struct nfsclds **dspp; 6024 6025 np = VTONFS(vp); 6026 rel_off = off - flp->nfsfl_patoff; 6027 stripe_unit_size = (flp->nfsfl_util >> 6) & 0x3ffffff; 6028 stripe_pos = (rel_off / stripe_unit_size + flp->nfsfl_stripe1) % 6029 dp->nfsdi_stripecnt; 6030 transfer = stripe_unit_size - (rel_off % stripe_unit_size); 6031 error = 0; 6032 6033 /* Loop around, doing I/O for each stripe unit. */ 6034 while (len > 0 && error == 0) { 6035 stripe_index = nfsfldi_stripeindex(dp, stripe_pos); 6036 dspp = nfsfldi_addr(dp, stripe_index); 6037 if (((*dspp)->nfsclds_flags & NFSCLDS_MINORV2) != 0) 6038 minorvers = NFSV42_MINORVERSION; 6039 else 6040 minorvers = NFSV41_MINORVERSION; 6041 if (len > transfer && docommit == 0) 6042 xfer = transfer; 6043 else 6044 xfer = len; 6045 if ((flp->nfsfl_util & NFSFLAYUTIL_DENSE) != 0) { 6046 /* Dense layout. */ 6047 if (stripe_pos >= flp->nfsfl_fhcnt) 6048 return (EIO); 6049 fhp = flp->nfsfl_fh[stripe_pos]; 6050 io_off = (rel_off / (stripe_unit_size * 6051 dp->nfsdi_stripecnt)) * stripe_unit_size + 6052 rel_off % stripe_unit_size; 6053 } else { 6054 /* Sparse layout. */ 6055 if (flp->nfsfl_fhcnt > 1) { 6056 if (stripe_index >= flp->nfsfl_fhcnt) 6057 return (EIO); 6058 fhp = flp->nfsfl_fh[stripe_index]; 6059 } else if (flp->nfsfl_fhcnt == 1) 6060 fhp = flp->nfsfl_fh[0]; 6061 else 6062 fhp = np->n_fhp; 6063 io_off = off; 6064 } 6065 if ((flp->nfsfl_util & NFSFLAYUTIL_COMMIT_THRU_MDS) != 0) { 6066 commit_thru_mds = 1; 6067 if (docommit != 0) 6068 error = EIO; 6069 } else { 6070 commit_thru_mds = 0; 6071 NFSLOCKNODE(np); 6072 np->n_flag |= NDSCOMMIT; 6073 NFSUNLOCKNODE(np); 6074 } 6075 if (docommit != 0) { 6076 if (error == 0) 6077 error = nfsrpc_commitds(vp, io_off, xfer, 6078 *dspp, fhp, NFS_VER4, minorvers, cred, p); 6079 if (error == 0) { 6080 /* 6081 * Set both eof and uio_resid = 0 to end any 6082 * loops. 6083 */ 6084 *eofp = 1; 6085 uiop->uio_resid = 0; 6086 } else { 6087 NFSLOCKNODE(np); 6088 np->n_flag &= ~NDSCOMMIT; 6089 NFSUNLOCKNODE(np); 6090 } 6091 } else if (rwflag == NFSV4OPEN_ACCESSREAD) 6092 error = nfsrpc_readds(vp, uiop, stateidp, eofp, *dspp, 6093 io_off, xfer, fhp, 0, NFS_VER4, minorvers, cred, p); 6094 else { 6095 error = nfsrpc_writeds(vp, uiop, iomode, must_commit, 6096 stateidp, *dspp, io_off, xfer, fhp, commit_thru_mds, 6097 0, NFS_VER4, minorvers, cred, p); 6098 if (error == 0) { 6099 NFSLOCKCLSTATE(); 6100 lyp->nfsly_flags |= NFSLY_WRITTEN; 6101 NFSUNLOCKCLSTATE(); 6102 } 6103 } 6104 if (error == 0) { 6105 transfer = stripe_unit_size; 6106 stripe_pos = (stripe_pos + 1) % dp->nfsdi_stripecnt; 6107 len -= xfer; 6108 off += xfer; 6109 } 6110 } 6111 return (error); 6112 } 6113 6114 /* 6115 * Do I/O using an NFSv4.1 flex file layout. 6116 */ 6117 static int 6118 nfscl_dofflayoutio(vnode_t vp, struct uio *uiop, int *iomode, int *must_commit, 6119 int *eofp, nfsv4stateid_t *stateidp, int rwflag, struct nfscldevinfo *dp, 6120 struct nfscllayout *lyp, struct nfsclflayout *flp, uint64_t off, 6121 uint64_t len, int mirror, int docommit, struct mbuf *mp, 6122 struct nfsclwritedsdorpc *drpc, struct ucred *cred, NFSPROC_T *p) 6123 { 6124 uint64_t xfer; 6125 int error; 6126 struct nfsnode *np; 6127 struct nfsfh *fhp; 6128 struct nfsclds **dspp; 6129 struct ucred *tcred; 6130 struct mbuf *m, *m2; 6131 uint32_t copylen; 6132 6133 np = VTONFS(vp); 6134 error = 0; 6135 NFSCL_DEBUG(4, "nfscl_dofflayoutio: off=%ju len=%ju\n", (uintmax_t)off, 6136 (uintmax_t)len); 6137 /* Loop around, doing I/O for each stripe unit. */ 6138 while (len > 0 && error == 0) { 6139 dspp = nfsfldi_addr(dp, 0); 6140 fhp = flp->nfsfl_ffm[mirror].fh[dp->nfsdi_versindex]; 6141 stateidp = &flp->nfsfl_ffm[mirror].st; 6142 NFSCL_DEBUG(4, "mirror=%d vind=%d fhlen=%d st.seqid=0x%x\n", 6143 mirror, dp->nfsdi_versindex, fhp->nfh_len, stateidp->seqid); 6144 if ((dp->nfsdi_flags & NFSDI_TIGHTCOUPLED) == 0) { 6145 tcred = NFSNEWCRED(cred); 6146 tcred->cr_uid = flp->nfsfl_ffm[mirror].user; 6147 tcred->cr_groups[0] = flp->nfsfl_ffm[mirror].group; 6148 tcred->cr_ngroups = 1; 6149 } else 6150 tcred = cred; 6151 if (rwflag == NFSV4OPEN_ACCESSREAD) 6152 copylen = dp->nfsdi_rsize; 6153 else { 6154 copylen = dp->nfsdi_wsize; 6155 if (len > copylen && mp != NULL) { 6156 /* 6157 * When a mirrored configuration needs to do 6158 * multiple writes to each mirror, all writes 6159 * except the last one must be a multiple of 6160 * 4 bytes. This is required so that the XDR 6161 * does not need padding. 6162 * If possible, clip the size to an exact 6163 * multiple of the mbuf length, so that the 6164 * split will be on an mbuf boundary. 6165 */ 6166 copylen &= 0xfffffffc; 6167 if (copylen > mp->m_len) 6168 copylen = copylen / mp->m_len * 6169 mp->m_len; 6170 } 6171 } 6172 NFSLOCKNODE(np); 6173 np->n_flag |= NDSCOMMIT; 6174 NFSUNLOCKNODE(np); 6175 if (len > copylen && docommit == 0) 6176 xfer = copylen; 6177 else 6178 xfer = len; 6179 if (docommit != 0) { 6180 if (error == 0) { 6181 /* 6182 * Do last mirrored DS commit with this thread. 6183 */ 6184 if (mirror < flp->nfsfl_mirrorcnt - 1) 6185 error = nfsio_commitds(vp, off, xfer, 6186 *dspp, fhp, dp->nfsdi_vers, 6187 dp->nfsdi_minorvers, drpc, tcred, 6188 p); 6189 else 6190 error = nfsrpc_commitds(vp, off, xfer, 6191 *dspp, fhp, dp->nfsdi_vers, 6192 dp->nfsdi_minorvers, tcred, p); 6193 NFSCL_DEBUG(4, "commitds=%d\n", error); 6194 if (error != 0 && error != EACCES && error != 6195 ESTALE) { 6196 NFSCL_DEBUG(4, 6197 "DS layreterr for commit\n"); 6198 nfscl_dserr(NFSV4OP_COMMIT, error, dp, 6199 lyp, *dspp); 6200 } 6201 } 6202 NFSCL_DEBUG(4, "aft nfsio_commitds=%d\n", error); 6203 if (error == 0) { 6204 /* 6205 * Set both eof and uio_resid = 0 to end any 6206 * loops. 6207 */ 6208 *eofp = 1; 6209 uiop->uio_resid = 0; 6210 } else { 6211 NFSLOCKNODE(np); 6212 np->n_flag &= ~NDSCOMMIT; 6213 NFSUNLOCKNODE(np); 6214 } 6215 } else if (rwflag == NFSV4OPEN_ACCESSREAD) { 6216 error = nfsrpc_readds(vp, uiop, stateidp, eofp, *dspp, 6217 off, xfer, fhp, 1, dp->nfsdi_vers, 6218 dp->nfsdi_minorvers, tcred, p); 6219 NFSCL_DEBUG(4, "readds=%d\n", error); 6220 if (error != 0 && error != EACCES && error != ESTALE) { 6221 NFSCL_DEBUG(4, "DS layreterr for read\n"); 6222 nfscl_dserr(NFSV4OP_READ, error, dp, lyp, 6223 *dspp); 6224 } 6225 } else { 6226 if (flp->nfsfl_mirrorcnt == 1) { 6227 error = nfsrpc_writeds(vp, uiop, iomode, 6228 must_commit, stateidp, *dspp, off, xfer, 6229 fhp, 0, 1, dp->nfsdi_vers, 6230 dp->nfsdi_minorvers, tcred, p); 6231 if (error == 0) { 6232 NFSLOCKCLSTATE(); 6233 lyp->nfsly_flags |= NFSLY_WRITTEN; 6234 NFSUNLOCKCLSTATE(); 6235 } 6236 } else { 6237 m = mp; 6238 if (xfer < len) { 6239 /* The mbuf list must be split. */ 6240 m2 = nfsm_split(mp, xfer); 6241 if (m2 != NULL) 6242 mp = m2; 6243 else { 6244 m_freem(mp); 6245 error = EIO; 6246 } 6247 } 6248 NFSCL_DEBUG(4, "mcopy len=%jd xfer=%jd\n", 6249 (uintmax_t)len, (uintmax_t)xfer); 6250 /* 6251 * Do last write to a mirrored DS with this 6252 * thread. 6253 */ 6254 if (error == 0) { 6255 if (mirror < flp->nfsfl_mirrorcnt - 1) 6256 error = nfsio_writedsmir(vp, 6257 iomode, must_commit, 6258 stateidp, *dspp, off, 6259 xfer, fhp, m, 6260 dp->nfsdi_vers, 6261 dp->nfsdi_minorvers, drpc, 6262 tcred, p); 6263 else 6264 error = nfsrpc_writedsmir(vp, 6265 iomode, must_commit, 6266 stateidp, *dspp, off, 6267 xfer, fhp, m, 6268 dp->nfsdi_vers, 6269 dp->nfsdi_minorvers, tcred, 6270 p); 6271 } 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 } 6287 if ((dp->nfsdi_flags & NFSDI_TIGHTCOUPLED) == 0) 6288 NFSFREECRED(tcred); 6289 } 6290 NFSCL_DEBUG(4, "eo nfscl_dofflayoutio=%d\n", error); 6291 return (error); 6292 } 6293 6294 /* 6295 * The actual read RPC done to a DS. 6296 */ 6297 static int 6298 nfsrpc_readds(vnode_t vp, struct uio *uiop, nfsv4stateid_t *stateidp, int *eofp, 6299 struct nfsclds *dsp, uint64_t io_off, int len, struct nfsfh *fhp, int flex, 6300 int vers, int minorvers, struct ucred *cred, NFSPROC_T *p) 6301 { 6302 uint32_t *tl; 6303 int attrflag, error, retlen; 6304 struct nfsrv_descript nfsd; 6305 struct nfsmount *nmp = VFSTONFS(vp->v_mount); 6306 struct nfsrv_descript *nd = &nfsd; 6307 struct nfssockreq *nrp; 6308 struct nfsvattr na; 6309 6310 nd->nd_mrep = NULL; 6311 if (vers == 0 || vers == NFS_VER4) { 6312 nfscl_reqstart(nd, NFSPROC_READDS, nmp, fhp->nfh_fh, 6313 fhp->nfh_len, NULL, &dsp->nfsclds_sess, vers, minorvers); 6314 vers = NFS_VER4; 6315 NFSCL_DEBUG(4, "nfsrpc_readds: vers4 minvers=%d\n", minorvers); 6316 if (flex != 0) 6317 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID); 6318 else 6319 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSEQIDZERO); 6320 } else { 6321 nfscl_reqstart(nd, NFSPROC_READ, nmp, fhp->nfh_fh, 6322 fhp->nfh_len, NULL, &dsp->nfsclds_sess, vers, minorvers); 6323 NFSCL_DEBUG(4, "nfsrpc_readds: vers3\n"); 6324 } 6325 NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED * 3); 6326 txdr_hyper(io_off, tl); 6327 *(tl + 2) = txdr_unsigned(len); 6328 nrp = dsp->nfsclds_sockp; 6329 NFSCL_DEBUG(4, "nfsrpc_readds: nrp=%p\n", nrp); 6330 if (nrp == NULL) 6331 /* If NULL, use the MDS socket. */ 6332 nrp = &nmp->nm_sockreq; 6333 error = newnfs_request(nd, nmp, NULL, nrp, vp, p, cred, 6334 NFS_PROG, vers, NULL, 1, NULL, &dsp->nfsclds_sess); 6335 NFSCL_DEBUG(4, "nfsrpc_readds: stat=%d err=%d\n", nd->nd_repstat, 6336 error); 6337 if (error != 0) 6338 return (error); 6339 if (vers == NFS_VER3) { 6340 error = nfscl_postop_attr(nd, &na, &attrflag, NULL); 6341 NFSCL_DEBUG(4, "nfsrpc_readds: postop=%d\n", error); 6342 if (error != 0) 6343 goto nfsmout; 6344 } 6345 if (nd->nd_repstat != 0) { 6346 error = nd->nd_repstat; 6347 goto nfsmout; 6348 } 6349 if (vers == NFS_VER3) { 6350 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED); 6351 *eofp = fxdr_unsigned(int, *(tl + 1)); 6352 } else { 6353 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 6354 *eofp = fxdr_unsigned(int, *tl); 6355 } 6356 NFSM_STRSIZ(retlen, len); 6357 NFSCL_DEBUG(4, "nfsrpc_readds: retlen=%d eof=%d\n", retlen, *eofp); 6358 error = nfsm_mbufuio(nd, uiop, retlen); 6359 nfsmout: 6360 if (nd->nd_mrep != NULL) 6361 m_freem(nd->nd_mrep); 6362 return (error); 6363 } 6364 6365 /* 6366 * The actual write RPC done to a DS. 6367 */ 6368 static int 6369 nfsrpc_writeds(vnode_t vp, struct uio *uiop, int *iomode, int *must_commit, 6370 nfsv4stateid_t *stateidp, struct nfsclds *dsp, uint64_t io_off, int len, 6371 struct nfsfh *fhp, int commit_thru_mds, int flex, int vers, int minorvers, 6372 struct ucred *cred, NFSPROC_T *p) 6373 { 6374 uint32_t *tl; 6375 struct nfsmount *nmp = VFSTONFS(vp->v_mount); 6376 int attrflag, error, rlen, commit, committed = NFSWRITE_FILESYNC; 6377 int32_t backup; 6378 struct nfsrv_descript nfsd; 6379 struct nfsrv_descript *nd = &nfsd; 6380 struct nfssockreq *nrp; 6381 struct nfsvattr na; 6382 6383 KASSERT(uiop->uio_iovcnt == 1, ("nfs: writerpc iovcnt > 1")); 6384 nd->nd_mrep = NULL; 6385 if (vers == 0 || vers == NFS_VER4) { 6386 nfscl_reqstart(nd, NFSPROC_WRITEDS, nmp, fhp->nfh_fh, 6387 fhp->nfh_len, NULL, &dsp->nfsclds_sess, vers, minorvers); 6388 NFSCL_DEBUG(4, "nfsrpc_writeds: vers4 minvers=%d\n", minorvers); 6389 vers = NFS_VER4; 6390 if (flex != 0) 6391 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID); 6392 else 6393 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSEQIDZERO); 6394 NFSM_BUILD(tl, uint32_t *, NFSX_HYPER + 2 * NFSX_UNSIGNED); 6395 } else { 6396 nfscl_reqstart(nd, NFSPROC_WRITE, nmp, fhp->nfh_fh, 6397 fhp->nfh_len, NULL, &dsp->nfsclds_sess, vers, minorvers); 6398 NFSCL_DEBUG(4, "nfsrpc_writeds: vers3\n"); 6399 NFSM_BUILD(tl, uint32_t *, NFSX_HYPER + 3 * NFSX_UNSIGNED); 6400 } 6401 txdr_hyper(io_off, tl); 6402 tl += 2; 6403 if (vers == NFS_VER3) 6404 *tl++ = txdr_unsigned(len); 6405 *tl++ = txdr_unsigned(*iomode); 6406 *tl = txdr_unsigned(len); 6407 nfsm_uiombuf(nd, uiop, len); 6408 nrp = dsp->nfsclds_sockp; 6409 if (nrp == NULL) 6410 /* If NULL, use the MDS socket. */ 6411 nrp = &nmp->nm_sockreq; 6412 error = newnfs_request(nd, nmp, NULL, nrp, vp, p, cred, 6413 NFS_PROG, vers, NULL, 1, NULL, &dsp->nfsclds_sess); 6414 NFSCL_DEBUG(4, "nfsrpc_writeds: err=%d stat=%d\n", error, 6415 nd->nd_repstat); 6416 if (error != 0) 6417 return (error); 6418 if (nd->nd_repstat != 0) { 6419 /* 6420 * In case the rpc gets retried, roll 6421 * the uio fileds changed by nfsm_uiombuf() 6422 * back. 6423 */ 6424 uiop->uio_offset -= len; 6425 uiop->uio_resid += len; 6426 uiop->uio_iov->iov_base = (char *)uiop->uio_iov->iov_base - len; 6427 uiop->uio_iov->iov_len += len; 6428 error = nd->nd_repstat; 6429 } else { 6430 if (vers == NFS_VER3) { 6431 error = nfscl_wcc_data(nd, vp, &na, &attrflag, NULL, 6432 NULL); 6433 NFSCL_DEBUG(4, "nfsrpc_writeds: wcc_data=%d\n", error); 6434 if (error != 0) 6435 goto nfsmout; 6436 } 6437 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED + NFSX_VERF); 6438 rlen = fxdr_unsigned(int, *tl++); 6439 NFSCL_DEBUG(4, "nfsrpc_writeds: len=%d rlen=%d\n", len, rlen); 6440 if (rlen == 0) { 6441 error = NFSERR_IO; 6442 goto nfsmout; 6443 } else if (rlen < len) { 6444 backup = len - rlen; 6445 uiop->uio_iov->iov_base = 6446 (char *)uiop->uio_iov->iov_base - backup; 6447 uiop->uio_iov->iov_len += backup; 6448 uiop->uio_offset -= backup; 6449 uiop->uio_resid += backup; 6450 len = rlen; 6451 } 6452 commit = fxdr_unsigned(int, *tl++); 6453 6454 /* 6455 * Return the lowest commitment level 6456 * obtained by any of the RPCs. 6457 */ 6458 if (committed == NFSWRITE_FILESYNC) 6459 committed = commit; 6460 else if (committed == NFSWRITE_DATASYNC && 6461 commit == NFSWRITE_UNSTABLE) 6462 committed = commit; 6463 if (commit_thru_mds != 0) { 6464 NFSLOCKMNT(nmp); 6465 if (!NFSHASWRITEVERF(nmp)) { 6466 NFSBCOPY(tl, nmp->nm_verf, NFSX_VERF); 6467 NFSSETWRITEVERF(nmp); 6468 } else if (NFSBCMP(tl, nmp->nm_verf, NFSX_VERF)) { 6469 *must_commit = 1; 6470 NFSBCOPY(tl, nmp->nm_verf, NFSX_VERF); 6471 } 6472 NFSUNLOCKMNT(nmp); 6473 } else { 6474 NFSLOCKDS(dsp); 6475 if ((dsp->nfsclds_flags & NFSCLDS_HASWRITEVERF) == 0) { 6476 NFSBCOPY(tl, dsp->nfsclds_verf, NFSX_VERF); 6477 dsp->nfsclds_flags |= NFSCLDS_HASWRITEVERF; 6478 } else if (NFSBCMP(tl, dsp->nfsclds_verf, NFSX_VERF)) { 6479 *must_commit = 1; 6480 NFSBCOPY(tl, dsp->nfsclds_verf, NFSX_VERF); 6481 } 6482 NFSUNLOCKDS(dsp); 6483 } 6484 } 6485 nfsmout: 6486 if (nd->nd_mrep != NULL) 6487 m_freem(nd->nd_mrep); 6488 *iomode = committed; 6489 if (nd->nd_repstat != 0 && error == 0) 6490 error = nd->nd_repstat; 6491 return (error); 6492 } 6493 6494 /* 6495 * The actual write RPC done to a DS. 6496 * This variant is called from a separate kernel process for mirrors. 6497 * Any short write is considered an IO error. 6498 */ 6499 static int 6500 nfsrpc_writedsmir(vnode_t vp, int *iomode, int *must_commit, 6501 nfsv4stateid_t *stateidp, struct nfsclds *dsp, uint64_t io_off, int len, 6502 struct nfsfh *fhp, struct mbuf *m, int vers, int minorvers, 6503 struct ucred *cred, NFSPROC_T *p) 6504 { 6505 uint32_t *tl; 6506 struct nfsmount *nmp = VFSTONFS(vp->v_mount); 6507 int attrflag, error, commit, committed = NFSWRITE_FILESYNC, rlen; 6508 struct nfsrv_descript nfsd; 6509 struct nfsrv_descript *nd = &nfsd; 6510 struct nfssockreq *nrp; 6511 struct nfsvattr na; 6512 6513 nd->nd_mrep = NULL; 6514 if (vers == 0 || vers == NFS_VER4) { 6515 nfscl_reqstart(nd, NFSPROC_WRITEDS, nmp, fhp->nfh_fh, 6516 fhp->nfh_len, NULL, &dsp->nfsclds_sess, vers, minorvers); 6517 vers = NFS_VER4; 6518 NFSCL_DEBUG(4, "nfsrpc_writedsmir: vers4 minvers=%d\n", 6519 minorvers); 6520 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID); 6521 NFSM_BUILD(tl, uint32_t *, NFSX_HYPER + 2 * NFSX_UNSIGNED); 6522 } else { 6523 nfscl_reqstart(nd, NFSPROC_WRITE, nmp, fhp->nfh_fh, 6524 fhp->nfh_len, NULL, &dsp->nfsclds_sess, vers, minorvers); 6525 NFSCL_DEBUG(4, "nfsrpc_writedsmir: vers3\n"); 6526 NFSM_BUILD(tl, uint32_t *, NFSX_HYPER + 3 * NFSX_UNSIGNED); 6527 } 6528 txdr_hyper(io_off, tl); 6529 tl += 2; 6530 if (vers == NFS_VER3) 6531 *tl++ = txdr_unsigned(len); 6532 *tl++ = txdr_unsigned(*iomode); 6533 *tl = txdr_unsigned(len); 6534 if (len > 0) { 6535 /* Put data in mbuf chain. */ 6536 nd->nd_mb->m_next = m; 6537 } 6538 nrp = dsp->nfsclds_sockp; 6539 if (nrp == NULL) 6540 /* If NULL, use the MDS socket. */ 6541 nrp = &nmp->nm_sockreq; 6542 error = newnfs_request(nd, nmp, NULL, nrp, vp, p, cred, 6543 NFS_PROG, vers, NULL, 1, NULL, &dsp->nfsclds_sess); 6544 NFSCL_DEBUG(4, "nfsrpc_writedsmir: err=%d stat=%d\n", error, 6545 nd->nd_repstat); 6546 if (error != 0) 6547 return (error); 6548 if (nd->nd_repstat != 0) 6549 error = nd->nd_repstat; 6550 else { 6551 if (vers == NFS_VER3) { 6552 error = nfscl_wcc_data(nd, vp, &na, &attrflag, NULL, 6553 NULL); 6554 NFSCL_DEBUG(4, "nfsrpc_writedsmir: wcc_data=%d\n", 6555 error); 6556 if (error != 0) 6557 goto nfsmout; 6558 } 6559 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED + NFSX_VERF); 6560 rlen = fxdr_unsigned(int, *tl++); 6561 NFSCL_DEBUG(4, "nfsrpc_writedsmir: len=%d rlen=%d\n", len, 6562 rlen); 6563 if (rlen != len) { 6564 error = NFSERR_IO; 6565 NFSCL_DEBUG(4, "nfsrpc_writedsmir: len=%d rlen=%d\n", 6566 len, rlen); 6567 goto nfsmout; 6568 } 6569 commit = fxdr_unsigned(int, *tl++); 6570 6571 /* 6572 * Return the lowest commitment level 6573 * obtained by any of the RPCs. 6574 */ 6575 if (committed == NFSWRITE_FILESYNC) 6576 committed = commit; 6577 else if (committed == NFSWRITE_DATASYNC && 6578 commit == NFSWRITE_UNSTABLE) 6579 committed = commit; 6580 NFSLOCKDS(dsp); 6581 if ((dsp->nfsclds_flags & NFSCLDS_HASWRITEVERF) == 0) { 6582 NFSBCOPY(tl, dsp->nfsclds_verf, NFSX_VERF); 6583 dsp->nfsclds_flags |= NFSCLDS_HASWRITEVERF; 6584 } else if (NFSBCMP(tl, dsp->nfsclds_verf, NFSX_VERF)) { 6585 *must_commit = 1; 6586 NFSBCOPY(tl, dsp->nfsclds_verf, NFSX_VERF); 6587 } 6588 NFSUNLOCKDS(dsp); 6589 } 6590 nfsmout: 6591 if (nd->nd_mrep != NULL) 6592 m_freem(nd->nd_mrep); 6593 *iomode = committed; 6594 if (nd->nd_repstat != 0 && error == 0) 6595 error = nd->nd_repstat; 6596 return (error); 6597 } 6598 6599 /* 6600 * Start up the thread that will execute nfsrpc_writedsmir(). 6601 */ 6602 static void 6603 start_writedsmir(void *arg, int pending) 6604 { 6605 struct nfsclwritedsdorpc *drpc; 6606 6607 drpc = (struct nfsclwritedsdorpc *)arg; 6608 drpc->err = nfsrpc_writedsmir(drpc->vp, &drpc->iomode, 6609 &drpc->must_commit, drpc->stateidp, drpc->dsp, drpc->off, drpc->len, 6610 drpc->fhp, drpc->m, drpc->vers, drpc->minorvers, drpc->cred, 6611 drpc->p); 6612 drpc->done = 1; 6613 NFSCL_DEBUG(4, "start_writedsmir: err=%d\n", drpc->err); 6614 } 6615 6616 /* 6617 * Set up the write DS mirror call for the pNFS I/O thread. 6618 */ 6619 static int 6620 nfsio_writedsmir(vnode_t vp, int *iomode, int *must_commit, 6621 nfsv4stateid_t *stateidp, struct nfsclds *dsp, uint64_t off, int len, 6622 struct nfsfh *fhp, struct mbuf *m, int vers, int minorvers, 6623 struct nfsclwritedsdorpc *drpc, struct ucred *cred, NFSPROC_T *p) 6624 { 6625 int error, ret; 6626 6627 error = 0; 6628 drpc->done = 0; 6629 drpc->vp = vp; 6630 drpc->iomode = *iomode; 6631 drpc->must_commit = *must_commit; 6632 drpc->stateidp = stateidp; 6633 drpc->dsp = dsp; 6634 drpc->off = off; 6635 drpc->len = len; 6636 drpc->fhp = fhp; 6637 drpc->m = m; 6638 drpc->vers = vers; 6639 drpc->minorvers = minorvers; 6640 drpc->cred = cred; 6641 drpc->p = p; 6642 drpc->inprog = 0; 6643 ret = EIO; 6644 if (nfs_pnfsiothreads != 0) { 6645 ret = nfs_pnfsio(start_writedsmir, drpc); 6646 NFSCL_DEBUG(4, "nfsio_writedsmir: nfs_pnfsio=%d\n", ret); 6647 } 6648 if (ret != 0) 6649 error = nfsrpc_writedsmir(vp, iomode, must_commit, stateidp, 6650 dsp, off, len, fhp, m, vers, minorvers, cred, p); 6651 NFSCL_DEBUG(4, "nfsio_writedsmir: error=%d\n", error); 6652 return (error); 6653 } 6654 6655 /* 6656 * Free up the nfsclds structure. 6657 */ 6658 void 6659 nfscl_freenfsclds(struct nfsclds *dsp) 6660 { 6661 int i; 6662 6663 if (dsp == NULL) 6664 return; 6665 if (dsp->nfsclds_sockp != NULL) { 6666 NFSFREECRED(dsp->nfsclds_sockp->nr_cred); 6667 NFSFREEMUTEX(&dsp->nfsclds_sockp->nr_mtx); 6668 free(dsp->nfsclds_sockp->nr_nam, M_SONAME); 6669 free(dsp->nfsclds_sockp, M_NFSSOCKREQ); 6670 } 6671 NFSFREEMUTEX(&dsp->nfsclds_mtx); 6672 NFSFREEMUTEX(&dsp->nfsclds_sess.nfsess_mtx); 6673 for (i = 0; i < NFSV4_CBSLOTS; i++) { 6674 if (dsp->nfsclds_sess.nfsess_cbslots[i].nfssl_reply != NULL) 6675 m_freem( 6676 dsp->nfsclds_sess.nfsess_cbslots[i].nfssl_reply); 6677 } 6678 free(dsp, M_NFSCLDS); 6679 } 6680 6681 static enum nfsclds_state 6682 nfscl_getsameserver(struct nfsmount *nmp, struct nfsclds *newdsp, 6683 struct nfsclds **retdspp, uint32_t *sequencep) 6684 { 6685 struct nfsclds *dsp; 6686 int fndseq; 6687 6688 /* 6689 * Search the list of nfsclds structures for one with the same 6690 * server. 6691 */ 6692 fndseq = 0; 6693 TAILQ_FOREACH(dsp, &nmp->nm_sess, nfsclds_list) { 6694 if (dsp->nfsclds_servownlen == newdsp->nfsclds_servownlen && 6695 dsp->nfsclds_servownlen != 0 && 6696 !NFSBCMP(dsp->nfsclds_serverown, newdsp->nfsclds_serverown, 6697 dsp->nfsclds_servownlen) && 6698 dsp->nfsclds_sess.nfsess_defunct == 0) { 6699 NFSCL_DEBUG(4, "fnd same fdsp=%p dsp=%p flg=0x%x\n", 6700 TAILQ_FIRST(&nmp->nm_sess), dsp, 6701 dsp->nfsclds_flags); 6702 if (fndseq == 0) { 6703 /* Get sequenceid# from first entry. */ 6704 *sequencep = 6705 dsp->nfsclds_sess.nfsess_sequenceid; 6706 fndseq = 1; 6707 } 6708 /* Server major id matches. */ 6709 if ((dsp->nfsclds_flags & NFSCLDS_DS) != 0) { 6710 *retdspp = dsp; 6711 return (NFSDSP_USETHISSESSION); 6712 } 6713 } 6714 } 6715 if (fndseq != 0) 6716 return (NFSDSP_SEQTHISSESSION); 6717 return (NFSDSP_NOTFOUND); 6718 } 6719 6720 /* 6721 * NFS commit rpc to a NFSv4.1 DS. 6722 */ 6723 static int 6724 nfsrpc_commitds(vnode_t vp, uint64_t offset, int cnt, struct nfsclds *dsp, 6725 struct nfsfh *fhp, int vers, int minorvers, struct ucred *cred, 6726 NFSPROC_T *p) 6727 { 6728 uint32_t *tl; 6729 struct nfsrv_descript nfsd, *nd = &nfsd; 6730 struct nfsmount *nmp = VFSTONFS(vp->v_mount); 6731 struct nfssockreq *nrp; 6732 struct nfsvattr na; 6733 int attrflag, error; 6734 6735 nd->nd_mrep = NULL; 6736 if (vers == 0 || vers == NFS_VER4) { 6737 nfscl_reqstart(nd, NFSPROC_COMMITDS, nmp, fhp->nfh_fh, 6738 fhp->nfh_len, NULL, &dsp->nfsclds_sess, vers, minorvers); 6739 vers = NFS_VER4; 6740 } else 6741 nfscl_reqstart(nd, NFSPROC_COMMIT, nmp, fhp->nfh_fh, 6742 fhp->nfh_len, NULL, &dsp->nfsclds_sess, vers, minorvers); 6743 NFSCL_DEBUG(4, "nfsrpc_commitds: vers=%d minvers=%d\n", vers, 6744 minorvers); 6745 NFSM_BUILD(tl, uint32_t *, NFSX_HYPER + NFSX_UNSIGNED); 6746 txdr_hyper(offset, tl); 6747 tl += 2; 6748 *tl = txdr_unsigned(cnt); 6749 nrp = dsp->nfsclds_sockp; 6750 if (nrp == NULL) 6751 /* If NULL, use the MDS socket. */ 6752 nrp = &nmp->nm_sockreq; 6753 error = newnfs_request(nd, nmp, NULL, nrp, vp, p, cred, 6754 NFS_PROG, vers, NULL, 1, NULL, &dsp->nfsclds_sess); 6755 NFSCL_DEBUG(4, "nfsrpc_commitds: err=%d stat=%d\n", error, 6756 nd->nd_repstat); 6757 if (error != 0) 6758 return (error); 6759 if (nd->nd_repstat == 0) { 6760 if (vers == NFS_VER3) { 6761 error = nfscl_wcc_data(nd, vp, &na, &attrflag, NULL, 6762 NULL); 6763 NFSCL_DEBUG(4, "nfsrpc_commitds: wccdata=%d\n", error); 6764 if (error != 0) 6765 goto nfsmout; 6766 } 6767 NFSM_DISSECT(tl, u_int32_t *, NFSX_VERF); 6768 NFSLOCKDS(dsp); 6769 if (NFSBCMP(tl, dsp->nfsclds_verf, NFSX_VERF)) { 6770 NFSBCOPY(tl, dsp->nfsclds_verf, NFSX_VERF); 6771 error = NFSERR_STALEWRITEVERF; 6772 } 6773 NFSUNLOCKDS(dsp); 6774 } 6775 nfsmout: 6776 if (error == 0 && nd->nd_repstat != 0) 6777 error = nd->nd_repstat; 6778 m_freem(nd->nd_mrep); 6779 return (error); 6780 } 6781 6782 /* 6783 * Start up the thread that will execute nfsrpc_commitds(). 6784 */ 6785 static void 6786 start_commitds(void *arg, int pending) 6787 { 6788 struct nfsclwritedsdorpc *drpc; 6789 6790 drpc = (struct nfsclwritedsdorpc *)arg; 6791 drpc->err = nfsrpc_commitds(drpc->vp, drpc->off, drpc->len, 6792 drpc->dsp, drpc->fhp, drpc->vers, drpc->minorvers, drpc->cred, 6793 drpc->p); 6794 drpc->done = 1; 6795 NFSCL_DEBUG(4, "start_commitds: err=%d\n", drpc->err); 6796 } 6797 6798 /* 6799 * Set up the commit DS mirror call for the pNFS I/O thread. 6800 */ 6801 static int 6802 nfsio_commitds(vnode_t vp, uint64_t offset, int cnt, struct nfsclds *dsp, 6803 struct nfsfh *fhp, int vers, int minorvers, 6804 struct nfsclwritedsdorpc *drpc, struct ucred *cred, NFSPROC_T *p) 6805 { 6806 int error, ret; 6807 6808 error = 0; 6809 drpc->done = 0; 6810 drpc->vp = vp; 6811 drpc->off = offset; 6812 drpc->len = cnt; 6813 drpc->dsp = dsp; 6814 drpc->fhp = fhp; 6815 drpc->vers = vers; 6816 drpc->minorvers = minorvers; 6817 drpc->cred = cred; 6818 drpc->p = p; 6819 drpc->inprog = 0; 6820 ret = EIO; 6821 if (nfs_pnfsiothreads != 0) { 6822 ret = nfs_pnfsio(start_commitds, drpc); 6823 NFSCL_DEBUG(4, "nfsio_commitds: nfs_pnfsio=%d\n", ret); 6824 } 6825 if (ret != 0) 6826 error = nfsrpc_commitds(vp, offset, cnt, dsp, fhp, vers, 6827 minorvers, cred, p); 6828 NFSCL_DEBUG(4, "nfsio_commitds: error=%d\n", error); 6829 return (error); 6830 } 6831 6832 /* 6833 * NFS Advise rpc 6834 */ 6835 int 6836 nfsrpc_advise(vnode_t vp, off_t offset, uint64_t cnt, int advise, 6837 struct ucred *cred, NFSPROC_T *p) 6838 { 6839 u_int32_t *tl; 6840 struct nfsrv_descript nfsd, *nd = &nfsd; 6841 nfsattrbit_t hints; 6842 int error; 6843 6844 NFSZERO_ATTRBIT(&hints); 6845 if (advise == POSIX_FADV_WILLNEED) 6846 NFSSETBIT_ATTRBIT(&hints, NFSV4IOHINT_WILLNEED); 6847 else if (advise == POSIX_FADV_DONTNEED) 6848 NFSSETBIT_ATTRBIT(&hints, NFSV4IOHINT_DONTNEED); 6849 else 6850 return (0); 6851 NFSCL_REQSTART(nd, NFSPROC_IOADVISE, vp); 6852 nfsm_stateidtom(nd, NULL, NFSSTATEID_PUTALLZERO); 6853 NFSM_BUILD(tl, uint32_t *, 2 * NFSX_HYPER); 6854 txdr_hyper(offset, tl); 6855 tl += 2; 6856 txdr_hyper(cnt, tl); 6857 nfsrv_putattrbit(nd, &hints); 6858 error = nfscl_request(nd, vp, p, cred, NULL); 6859 if (error != 0) 6860 return (error); 6861 if (nd->nd_repstat != 0) 6862 error = nd->nd_repstat; 6863 m_freem(nd->nd_mrep); 6864 return (error); 6865 } 6866 6867 #ifdef notyet 6868 /* 6869 * NFS advise rpc to a NFSv4.2 DS. 6870 */ 6871 static int 6872 nfsrpc_adviseds(vnode_t vp, uint64_t offset, int cnt, int advise, 6873 struct nfsclds *dsp, struct nfsfh *fhp, int vers, int minorvers, 6874 struct ucred *cred, NFSPROC_T *p) 6875 { 6876 uint32_t *tl; 6877 struct nfsrv_descript nfsd, *nd = &nfsd; 6878 struct nfsmount *nmp = VFSTONFS(vp->v_mount); 6879 struct nfssockreq *nrp; 6880 nfsattrbit_t hints; 6881 int error; 6882 6883 /* For NFS DSs prior to NFSv4.2, just return OK. */ 6884 if (vers == NFS_VER3 || minorversion < NFSV42_MINORVERSION) 6885 return (0); 6886 NFSZERO_ATTRBIT(&hints); 6887 if (advise == POSIX_FADV_WILLNEED) 6888 NFSSETBIT_ATTRBIT(&hints, NFSV4IOHINT_WILLNEED); 6889 else if (advise == POSIX_FADV_DONTNEED) 6890 NFSSETBIT_ATTRBIT(&hints, NFSV4IOHINT_DONTNEED); 6891 else 6892 return (0); 6893 nd->nd_mrep = NULL; 6894 nfscl_reqstart(nd, NFSPROC_IOADVISEDS, nmp, fhp->nfh_fh, 6895 fhp->nfh_len, NULL, &dsp->nfsclds_sess, vers, minorvers); 6896 vers = NFS_VER4; 6897 NFSCL_DEBUG(4, "nfsrpc_adviseds: vers=%d minvers=%d\n", vers, 6898 minorvers); 6899 nfsm_stateidtom(nd, NULL, NFSSTATEID_PUTALLZERO); 6900 NFSM_BUILD(tl, uint32_t *, NFSX_HYPER + NFSX_UNSIGNED); 6901 txdr_hyper(offset, tl); 6902 tl += 2; 6903 *tl = txdr_unsigned(cnt); 6904 nfsrv_putattrbit(nd, &hints); 6905 nrp = dsp->nfsclds_sockp; 6906 if (nrp == NULL) 6907 /* If NULL, use the MDS socket. */ 6908 nrp = &nmp->nm_sockreq; 6909 error = newnfs_request(nd, nmp, NULL, nrp, vp, p, cred, 6910 NFS_PROG, vers, NULL, 1, NULL, &dsp->nfsclds_sess); 6911 NFSCL_DEBUG(4, "nfsrpc_adviseds: err=%d stat=%d\n", error, 6912 nd->nd_repstat); 6913 if (error != 0) 6914 return (error); 6915 if (nd->nd_repstat != 0) 6916 error = nd->nd_repstat; 6917 m_freem(nd->nd_mrep); 6918 return (error); 6919 } 6920 6921 /* 6922 * Start up the thread that will execute nfsrpc_commitds(). 6923 */ 6924 static void 6925 start_adviseds(void *arg, int pending) 6926 { 6927 struct nfsclwritedsdorpc *drpc; 6928 6929 drpc = (struct nfsclwritedsdorpc *)arg; 6930 drpc->err = nfsrpc_adviseds(drpc->vp, drpc->off, drpc->len, 6931 drpc->advise, drpc->dsp, drpc->fhp, drpc->vers, drpc->minorvers, 6932 drpc->cred, drpc->p); 6933 drpc->done = 1; 6934 NFSCL_DEBUG(4, "start_adviseds: err=%d\n", drpc->err); 6935 } 6936 6937 /* 6938 * Set up the commit DS mirror call for the pNFS I/O thread. 6939 */ 6940 static int 6941 nfsio_adviseds(vnode_t vp, uint64_t offset, int cnt, int advise, 6942 struct nfsclds *dsp, struct nfsfh *fhp, int vers, int minorvers, 6943 struct nfsclwritedsdorpc *drpc, struct ucred *cred, NFSPROC_T *p) 6944 { 6945 int error, ret; 6946 6947 error = 0; 6948 drpc->done = 0; 6949 drpc->vp = vp; 6950 drpc->off = offset; 6951 drpc->len = cnt; 6952 drpc->advise = advise; 6953 drpc->dsp = dsp; 6954 drpc->fhp = fhp; 6955 drpc->vers = vers; 6956 drpc->minorvers = minorvers; 6957 drpc->cred = cred; 6958 drpc->p = p; 6959 drpc->inprog = 0; 6960 ret = EIO; 6961 if (nfs_pnfsiothreads != 0) { 6962 ret = nfs_pnfsio(start_adviseds, drpc); 6963 NFSCL_DEBUG(4, "nfsio_adviseds: nfs_pnfsio=%d\n", ret); 6964 } 6965 if (ret != 0) 6966 error = nfsrpc_adviseds(vp, offset, cnt, advise, dsp, fhp, vers, 6967 minorvers, cred, p); 6968 NFSCL_DEBUG(4, "nfsio_adviseds: error=%d\n", error); 6969 return (error); 6970 } 6971 #endif /* notyet */ 6972 6973 /* 6974 * Do the Allocate operation, retrying for recovery. 6975 */ 6976 int 6977 nfsrpc_allocate(vnode_t vp, off_t off, off_t len, struct nfsvattr *nap, 6978 int *attrflagp, struct ucred *cred, NFSPROC_T *p, void *stuff) 6979 { 6980 int error, expireret = 0, retrycnt, nostateid; 6981 uint32_t clidrev = 0; 6982 struct nfsmount *nmp = VFSTONFS(vp->v_mount); 6983 struct nfsfh *nfhp = NULL; 6984 nfsv4stateid_t stateid; 6985 off_t tmp_off; 6986 void *lckp; 6987 6988 if (len < 0) 6989 return (EINVAL); 6990 if (len == 0) 6991 return (0); 6992 tmp_off = off + len; 6993 NFSLOCKMNT(nmp); 6994 if (tmp_off > nmp->nm_maxfilesize || tmp_off < off) { 6995 NFSUNLOCKMNT(nmp); 6996 return (EFBIG); 6997 } 6998 if (nmp->nm_clp != NULL) 6999 clidrev = nmp->nm_clp->nfsc_clientidrev; 7000 NFSUNLOCKMNT(nmp); 7001 nfhp = VTONFS(vp)->n_fhp; 7002 retrycnt = 0; 7003 do { 7004 lckp = NULL; 7005 nostateid = 0; 7006 nfscl_getstateid(vp, nfhp->nfh_fh, nfhp->nfh_len, 7007 NFSV4OPEN_ACCESSWRITE, 0, cred, p, &stateid, &lckp); 7008 if (stateid.other[0] == 0 && stateid.other[1] == 0 && 7009 stateid.other[2] == 0) { 7010 nostateid = 1; 7011 NFSCL_DEBUG(1, "stateid0 in allocate\n"); 7012 } 7013 7014 /* 7015 * Not finding a stateid should probably never happen, 7016 * but just return an error for this case. 7017 */ 7018 if (nostateid != 0) 7019 error = EIO; 7020 else 7021 error = nfsrpc_allocaterpc(vp, off, len, &stateid, 7022 nap, attrflagp, cred, p, stuff); 7023 if (error == NFSERR_STALESTATEID) 7024 nfscl_initiate_recovery(nmp->nm_clp); 7025 if (lckp != NULL) 7026 nfscl_lockderef(lckp); 7027 if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 7028 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 7029 error == NFSERR_OLDSTATEID || error == NFSERR_BADSESSION) { 7030 (void) nfs_catnap(PZERO, error, "nfs_allocate"); 7031 } else if ((error == NFSERR_EXPIRED || 7032 error == NFSERR_BADSTATEID) && clidrev != 0) { 7033 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p); 7034 } 7035 retrycnt++; 7036 } while (error == NFSERR_GRACE || error == NFSERR_DELAY || 7037 error == NFSERR_STALESTATEID || error == NFSERR_BADSESSION || 7038 error == NFSERR_STALEDONTRECOVER || 7039 (error == NFSERR_OLDSTATEID && retrycnt < 20) || 7040 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) && 7041 expireret == 0 && clidrev != 0 && retrycnt < 4)); 7042 if (error != 0 && retrycnt >= 4) 7043 error = EIO; 7044 return (error); 7045 } 7046 7047 /* 7048 * The allocate RPC. 7049 */ 7050 static int 7051 nfsrpc_allocaterpc(vnode_t vp, off_t off, off_t len, nfsv4stateid_t *stateidp, 7052 struct nfsvattr *nap, int *attrflagp, struct ucred *cred, NFSPROC_T *p, 7053 void *stuff) 7054 { 7055 uint32_t *tl; 7056 int error; 7057 struct nfsrv_descript nfsd; 7058 struct nfsrv_descript *nd = &nfsd; 7059 nfsattrbit_t attrbits; 7060 7061 *attrflagp = 0; 7062 NFSCL_REQSTART(nd, NFSPROC_ALLOCATE, vp); 7063 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID); 7064 NFSM_BUILD(tl, uint32_t *, 2 * NFSX_HYPER + NFSX_UNSIGNED); 7065 txdr_hyper(off, tl); tl += 2; 7066 txdr_hyper(len, tl); tl += 2; 7067 *tl = txdr_unsigned(NFSV4OP_GETATTR); 7068 NFSGETATTR_ATTRBIT(&attrbits); 7069 nfsrv_putattrbit(nd, &attrbits); 7070 error = nfscl_request(nd, vp, p, cred, stuff); 7071 if (error != 0) 7072 return (error); 7073 if (nd->nd_repstat == 0) { 7074 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 7075 error = nfsm_loadattr(nd, nap); 7076 if (error == 0) 7077 *attrflagp = NFS_LATTR_NOSHRINK; 7078 } else 7079 error = nd->nd_repstat; 7080 nfsmout: 7081 m_freem(nd->nd_mrep); 7082 return (error); 7083 } 7084 7085 /* 7086 * Set up the XDR arguments for the LayoutGet operation. 7087 */ 7088 static void 7089 nfsrv_setuplayoutget(struct nfsrv_descript *nd, int iomode, uint64_t offset, 7090 uint64_t len, uint64_t minlen, nfsv4stateid_t *stateidp, int layouttype, 7091 int layoutlen, int usecurstateid) 7092 { 7093 uint32_t *tl; 7094 7095 NFSM_BUILD(tl, uint32_t *, 4 * NFSX_UNSIGNED + 3 * NFSX_HYPER + 7096 NFSX_STATEID); 7097 *tl++ = newnfs_false; /* Don't signal availability. */ 7098 *tl++ = txdr_unsigned(layouttype); 7099 *tl++ = txdr_unsigned(iomode); 7100 txdr_hyper(offset, tl); 7101 tl += 2; 7102 txdr_hyper(len, tl); 7103 tl += 2; 7104 txdr_hyper(minlen, tl); 7105 tl += 2; 7106 if (usecurstateid != 0) { 7107 /* Special stateid for Current stateid. */ 7108 *tl++ = txdr_unsigned(1); 7109 *tl++ = 0; 7110 *tl++ = 0; 7111 *tl++ = 0; 7112 } else { 7113 *tl++ = txdr_unsigned(stateidp->seqid); 7114 NFSCL_DEBUG(4, "layget seq=%d\n", (int)stateidp->seqid); 7115 *tl++ = stateidp->other[0]; 7116 *tl++ = stateidp->other[1]; 7117 *tl++ = stateidp->other[2]; 7118 } 7119 *tl = txdr_unsigned(layoutlen); 7120 } 7121 7122 /* 7123 * Parse the reply for a successful LayoutGet operation. 7124 */ 7125 static int 7126 nfsrv_parselayoutget(struct nfsmount *nmp, struct nfsrv_descript *nd, 7127 nfsv4stateid_t *stateidp, int *retonclosep, struct nfsclflayouthead *flhp) 7128 { 7129 uint32_t *tl; 7130 struct nfsclflayout *flp, *prevflp, *tflp; 7131 int cnt, error, fhcnt, gotiomode, i, iomode, j, k, l, laytype, nfhlen; 7132 int m, mirrorcnt; 7133 uint64_t retlen, off; 7134 struct nfsfh *nfhp; 7135 uint8_t *cp; 7136 uid_t user; 7137 gid_t grp; 7138 7139 NFSCL_DEBUG(4, "in nfsrv_parselayoutget\n"); 7140 error = 0; 7141 flp = NULL; 7142 gotiomode = -1; 7143 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED + NFSX_STATEID); 7144 if (*tl++ != 0) 7145 *retonclosep = 1; 7146 else 7147 *retonclosep = 0; 7148 stateidp->seqid = fxdr_unsigned(uint32_t, *tl++); 7149 NFSCL_DEBUG(4, "retoncls=%d stseq=%d\n", *retonclosep, 7150 (int)stateidp->seqid); 7151 stateidp->other[0] = *tl++; 7152 stateidp->other[1] = *tl++; 7153 stateidp->other[2] = *tl++; 7154 cnt = fxdr_unsigned(int, *tl); 7155 NFSCL_DEBUG(4, "layg cnt=%d\n", cnt); 7156 if (cnt <= 0 || cnt > 10000) { 7157 /* Don't accept more than 10000 layouts in reply. */ 7158 error = NFSERR_BADXDR; 7159 goto nfsmout; 7160 } 7161 for (i = 0; i < cnt; i++) { 7162 /* Dissect to the layout type. */ 7163 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_HYPER + 7164 3 * NFSX_UNSIGNED); 7165 off = fxdr_hyper(tl); tl += 2; 7166 retlen = fxdr_hyper(tl); tl += 2; 7167 iomode = fxdr_unsigned(int, *tl++); 7168 laytype = fxdr_unsigned(int, *tl); 7169 NFSCL_DEBUG(4, "layt=%d off=%ju len=%ju iom=%d\n", laytype, 7170 (uintmax_t)off, (uintmax_t)retlen, iomode); 7171 /* Ignore length of layout body for now. */ 7172 if (laytype == NFSLAYOUT_NFSV4_1_FILES) { 7173 /* Parse the File layout up to fhcnt. */ 7174 NFSM_DISSECT(tl, uint32_t *, 3 * NFSX_UNSIGNED + 7175 NFSX_HYPER + NFSX_V4DEVICEID); 7176 fhcnt = fxdr_unsigned(int, *(tl + 4 + 7177 NFSX_V4DEVICEID / NFSX_UNSIGNED)); 7178 NFSCL_DEBUG(4, "fhcnt=%d\n", fhcnt); 7179 if (fhcnt < 0 || fhcnt > 100) { 7180 /* Don't accept more than 100 file handles. */ 7181 error = NFSERR_BADXDR; 7182 goto nfsmout; 7183 } 7184 if (fhcnt > 0) 7185 flp = malloc(sizeof(*flp) + fhcnt * 7186 sizeof(struct nfsfh *), M_NFSFLAYOUT, 7187 M_WAITOK); 7188 else 7189 flp = malloc(sizeof(*flp), M_NFSFLAYOUT, 7190 M_WAITOK); 7191 flp->nfsfl_flags = NFSFL_FILE; 7192 flp->nfsfl_fhcnt = 0; 7193 flp->nfsfl_devp = NULL; 7194 flp->nfsfl_off = off; 7195 if (flp->nfsfl_off + retlen < flp->nfsfl_off) 7196 flp->nfsfl_end = UINT64_MAX - flp->nfsfl_off; 7197 else 7198 flp->nfsfl_end = flp->nfsfl_off + retlen; 7199 flp->nfsfl_iomode = iomode; 7200 if (gotiomode == -1) 7201 gotiomode = flp->nfsfl_iomode; 7202 /* Ignore layout body length for now. */ 7203 NFSBCOPY(tl, flp->nfsfl_dev, NFSX_V4DEVICEID); 7204 tl += (NFSX_V4DEVICEID / NFSX_UNSIGNED); 7205 flp->nfsfl_util = fxdr_unsigned(uint32_t, *tl++); 7206 NFSCL_DEBUG(4, "flutil=0x%x\n", flp->nfsfl_util); 7207 mtx_lock(&nmp->nm_mtx); 7208 if (nmp->nm_minorvers > 1 && (flp->nfsfl_util & 7209 NFSFLAYUTIL_IOADVISE_THRU_MDS) != 0) 7210 nmp->nm_privflag |= NFSMNTP_IOADVISETHRUMDS; 7211 mtx_unlock(&nmp->nm_mtx); 7212 flp->nfsfl_stripe1 = fxdr_unsigned(uint32_t, *tl++); 7213 flp->nfsfl_patoff = fxdr_hyper(tl); tl += 2; 7214 NFSCL_DEBUG(4, "stripe1=%u poff=%ju\n", 7215 flp->nfsfl_stripe1, (uintmax_t)flp->nfsfl_patoff); 7216 for (j = 0; j < fhcnt; j++) { 7217 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 7218 nfhlen = fxdr_unsigned(int, *tl); 7219 if (nfhlen <= 0 || nfhlen > NFSX_V4FHMAX) { 7220 error = NFSERR_BADXDR; 7221 goto nfsmout; 7222 } 7223 nfhp = malloc(sizeof(*nfhp) + nfhlen - 1, 7224 M_NFSFH, M_WAITOK); 7225 flp->nfsfl_fh[j] = nfhp; 7226 flp->nfsfl_fhcnt++; 7227 nfhp->nfh_len = nfhlen; 7228 NFSM_DISSECT(cp, uint8_t *, NFSM_RNDUP(nfhlen)); 7229 NFSBCOPY(cp, nfhp->nfh_fh, nfhlen); 7230 } 7231 } else if (laytype == NFSLAYOUT_FLEXFILE) { 7232 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED + 7233 NFSX_HYPER); 7234 mirrorcnt = fxdr_unsigned(int, *(tl + 2)); 7235 NFSCL_DEBUG(4, "mirrorcnt=%d\n", mirrorcnt); 7236 if (mirrorcnt < 1 || mirrorcnt > NFSDEV_MAXMIRRORS) { 7237 error = NFSERR_BADXDR; 7238 goto nfsmout; 7239 } 7240 flp = malloc(sizeof(*flp) + mirrorcnt * 7241 sizeof(struct nfsffm), M_NFSFLAYOUT, M_WAITOK); 7242 flp->nfsfl_flags = NFSFL_FLEXFILE; 7243 flp->nfsfl_mirrorcnt = mirrorcnt; 7244 for (j = 0; j < mirrorcnt; j++) 7245 flp->nfsfl_ffm[j].devp = NULL; 7246 flp->nfsfl_off = off; 7247 if (flp->nfsfl_off + retlen < flp->nfsfl_off) 7248 flp->nfsfl_end = UINT64_MAX - flp->nfsfl_off; 7249 else 7250 flp->nfsfl_end = flp->nfsfl_off + retlen; 7251 flp->nfsfl_iomode = iomode; 7252 if (gotiomode == -1) 7253 gotiomode = flp->nfsfl_iomode; 7254 flp->nfsfl_stripeunit = fxdr_hyper(tl); 7255 NFSCL_DEBUG(4, "stripeunit=%ju\n", 7256 (uintmax_t)flp->nfsfl_stripeunit); 7257 for (j = 0; j < mirrorcnt; j++) { 7258 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 7259 k = fxdr_unsigned(int, *tl); 7260 if (k < 1 || k > 128) { 7261 error = NFSERR_BADXDR; 7262 goto nfsmout; 7263 } 7264 NFSCL_DEBUG(4, "servercnt=%d\n", k); 7265 for (l = 0; l < k; l++) { 7266 NFSM_DISSECT(tl, uint32_t *, 7267 NFSX_V4DEVICEID + NFSX_STATEID + 7268 2 * NFSX_UNSIGNED); 7269 if (l == 0) { 7270 /* Just use the first server. */ 7271 NFSBCOPY(tl, 7272 flp->nfsfl_ffm[j].dev, 7273 NFSX_V4DEVICEID); 7274 tl += (NFSX_V4DEVICEID / 7275 NFSX_UNSIGNED); 7276 tl++; 7277 flp->nfsfl_ffm[j].st.seqid = 7278 *tl++; 7279 flp->nfsfl_ffm[j].st.other[0] = 7280 *tl++; 7281 flp->nfsfl_ffm[j].st.other[1] = 7282 *tl++; 7283 flp->nfsfl_ffm[j].st.other[2] = 7284 *tl++; 7285 NFSCL_DEBUG(4, "st.seqid=%u " 7286 "st.o0=0x%x st.o1=0x%x " 7287 "st.o2=0x%x\n", 7288 flp->nfsfl_ffm[j].st.seqid, 7289 flp->nfsfl_ffm[j].st.other[0], 7290 flp->nfsfl_ffm[j].st.other[1], 7291 flp->nfsfl_ffm[j].st.other[2]); 7292 } else 7293 tl += ((NFSX_V4DEVICEID + 7294 NFSX_STATEID + 7295 NFSX_UNSIGNED) / 7296 NFSX_UNSIGNED); 7297 fhcnt = fxdr_unsigned(int, *tl); 7298 NFSCL_DEBUG(4, "fhcnt=%d\n", fhcnt); 7299 if (fhcnt < 1 || 7300 fhcnt > NFSDEV_MAXVERS) { 7301 error = NFSERR_BADXDR; 7302 goto nfsmout; 7303 } 7304 for (m = 0; m < fhcnt; m++) { 7305 NFSM_DISSECT(tl, uint32_t *, 7306 NFSX_UNSIGNED); 7307 nfhlen = fxdr_unsigned(int, 7308 *tl); 7309 NFSCL_DEBUG(4, "nfhlen=%d\n", 7310 nfhlen); 7311 if (nfhlen <= 0 || nfhlen > 7312 NFSX_V4FHMAX) { 7313 error = NFSERR_BADXDR; 7314 goto nfsmout; 7315 } 7316 NFSM_DISSECT(cp, uint8_t *, 7317 NFSM_RNDUP(nfhlen)); 7318 if (l == 0) { 7319 flp->nfsfl_ffm[j].fhcnt 7320 = fhcnt; 7321 nfhp = malloc( 7322 sizeof(*nfhp) + 7323 nfhlen - 1, M_NFSFH, 7324 M_WAITOK); 7325 flp->nfsfl_ffm[j].fh[m] 7326 = nfhp; 7327 nfhp->nfh_len = nfhlen; 7328 NFSBCOPY(cp, 7329 nfhp->nfh_fh, 7330 nfhlen); 7331 NFSCL_DEBUG(4, 7332 "got fh\n"); 7333 } 7334 } 7335 /* Now, get the ffsd_user/ffds_group. */ 7336 error = nfsrv_parseug(nd, 0, &user, 7337 &grp, curthread); 7338 NFSCL_DEBUG(4, "after parseu=%d\n", 7339 error); 7340 if (error == 0) 7341 error = nfsrv_parseug(nd, 1, 7342 &user, &grp, curthread); 7343 NFSCL_DEBUG(4, "aft parseg=%d\n", 7344 grp); 7345 if (error != 0) 7346 goto nfsmout; 7347 NFSCL_DEBUG(4, "user=%d group=%d\n", 7348 user, grp); 7349 if (l == 0) { 7350 flp->nfsfl_ffm[j].user = user; 7351 flp->nfsfl_ffm[j].group = grp; 7352 NFSCL_DEBUG(4, 7353 "usr=%d grp=%d\n", user, 7354 grp); 7355 } 7356 } 7357 } 7358 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED); 7359 flp->nfsfl_fflags = fxdr_unsigned(uint32_t, *tl++); 7360 #ifdef notnow 7361 /* 7362 * At this time, there is no flag. 7363 * NFSFLEXFLAG_IOADVISE_THRU_MDS might need to be 7364 * added, or it may never exist? 7365 */ 7366 mtx_lock(&nmp->nm_mtx); 7367 if (nmp->nm_minorvers > 1 && (flp->nfsfl_fflags & 7368 NFSFLEXFLAG_IOADVISE_THRU_MDS) != 0) 7369 nmp->nm_privflag |= NFSMNTP_IOADVISETHRUMDS; 7370 mtx_unlock(&nmp->nm_mtx); 7371 #endif 7372 flp->nfsfl_statshint = fxdr_unsigned(uint32_t, *tl); 7373 NFSCL_DEBUG(4, "fflags=0x%x statshint=%d\n", 7374 flp->nfsfl_fflags, flp->nfsfl_statshint); 7375 } else { 7376 error = NFSERR_BADXDR; 7377 goto nfsmout; 7378 } 7379 if (flp->nfsfl_iomode == gotiomode) { 7380 /* Keep the list in increasing offset order. */ 7381 tflp = LIST_FIRST(flhp); 7382 prevflp = NULL; 7383 while (tflp != NULL && 7384 tflp->nfsfl_off < flp->nfsfl_off) { 7385 prevflp = tflp; 7386 tflp = LIST_NEXT(tflp, nfsfl_list); 7387 } 7388 if (prevflp == NULL) 7389 LIST_INSERT_HEAD(flhp, flp, nfsfl_list); 7390 else 7391 LIST_INSERT_AFTER(prevflp, flp, 7392 nfsfl_list); 7393 NFSCL_DEBUG(4, "flp inserted\n"); 7394 } else { 7395 printf("nfscl_layoutget(): got wrong iomode\n"); 7396 nfscl_freeflayout(flp); 7397 } 7398 flp = NULL; 7399 } 7400 nfsmout: 7401 NFSCL_DEBUG(4, "eo nfsrv_parselayoutget=%d\n", error); 7402 if (error != 0 && flp != NULL) 7403 nfscl_freeflayout(flp); 7404 return (error); 7405 } 7406 7407 /* 7408 * Parse a user/group digit string. 7409 */ 7410 static int 7411 nfsrv_parseug(struct nfsrv_descript *nd, int dogrp, uid_t *uidp, gid_t *gidp, 7412 NFSPROC_T *p) 7413 { 7414 uint32_t *tl; 7415 char *cp, *str, str0[NFSV4_SMALLSTR + 1]; 7416 uint32_t len = 0; 7417 int error = 0; 7418 7419 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 7420 len = fxdr_unsigned(uint32_t, *tl); 7421 str = NULL; 7422 if (len > NFSV4_OPAQUELIMIT) { 7423 error = NFSERR_BADXDR; 7424 goto nfsmout; 7425 } 7426 NFSCL_DEBUG(4, "nfsrv_parseug: len=%d\n", len); 7427 if (len == 0) { 7428 if (dogrp != 0) 7429 *gidp = GID_NOGROUP; 7430 else 7431 *uidp = UID_NOBODY; 7432 return (0); 7433 } 7434 if (len > NFSV4_SMALLSTR) 7435 str = malloc(len + 1, M_TEMP, M_WAITOK); 7436 else 7437 str = str0; 7438 NFSM_DISSECT(cp, char *, NFSM_RNDUP(len)); 7439 NFSBCOPY(cp, str, len); 7440 str[len] = '\0'; 7441 NFSCL_DEBUG(4, "nfsrv_parseug: str=%s\n", str); 7442 if (dogrp != 0) 7443 error = nfsv4_strtogid(nd, str, len, gidp); 7444 else 7445 error = nfsv4_strtouid(nd, str, len, uidp); 7446 nfsmout: 7447 if (len > NFSV4_SMALLSTR) 7448 free(str, M_TEMP); 7449 NFSCL_DEBUG(4, "eo nfsrv_parseug=%d\n", error); 7450 return (error); 7451 } 7452 7453 /* 7454 * Similar to nfsrpc_getlayout(), except that it uses nfsrpc_openlayget(), 7455 * so that it does both an Open and a Layoutget. 7456 */ 7457 static int 7458 nfsrpc_getopenlayout(struct nfsmount *nmp, vnode_t vp, u_int8_t *nfhp, 7459 int fhlen, uint8_t *newfhp, int newfhlen, uint32_t mode, 7460 struct nfsclopen *op, uint8_t *name, int namelen, struct nfscldeleg **dpp, 7461 struct ucred *cred, NFSPROC_T *p) 7462 { 7463 struct nfscllayout *lyp; 7464 struct nfsclflayout *flp; 7465 struct nfsclflayouthead flh; 7466 int error, islocked, layoutlen, recalled, retonclose, usecurstateid; 7467 int layouttype, laystat; 7468 nfsv4stateid_t stateid; 7469 struct nfsclsession *tsep; 7470 7471 error = 0; 7472 if (NFSHASFLEXFILE(nmp)) 7473 layouttype = NFSLAYOUT_FLEXFILE; 7474 else 7475 layouttype = NFSLAYOUT_NFSV4_1_FILES; 7476 /* 7477 * If lyp is returned non-NULL, there will be a refcnt (shared lock) 7478 * on it, iff flp != NULL or a lock (exclusive lock) on it iff 7479 * flp == NULL. 7480 */ 7481 lyp = nfscl_getlayout(nmp->nm_clp, newfhp, newfhlen, 0, &flp, 7482 &recalled); 7483 NFSCL_DEBUG(4, "nfsrpc_getopenlayout nfscl_getlayout lyp=%p\n", lyp); 7484 if (lyp == NULL) 7485 islocked = 0; 7486 else if (flp != NULL) 7487 islocked = 1; 7488 else 7489 islocked = 2; 7490 if ((lyp == NULL || flp == NULL) && recalled == 0) { 7491 LIST_INIT(&flh); 7492 tsep = nfsmnt_mdssession(nmp); 7493 layoutlen = tsep->nfsess_maxcache - (NFSX_STATEID + 7494 3 * NFSX_UNSIGNED); 7495 if (lyp == NULL) 7496 usecurstateid = 1; 7497 else { 7498 usecurstateid = 0; 7499 stateid.seqid = lyp->nfsly_stateid.seqid; 7500 stateid.other[0] = lyp->nfsly_stateid.other[0]; 7501 stateid.other[1] = lyp->nfsly_stateid.other[1]; 7502 stateid.other[2] = lyp->nfsly_stateid.other[2]; 7503 } 7504 error = nfsrpc_openlayoutrpc(nmp, vp, nfhp, fhlen, 7505 newfhp, newfhlen, mode, op, name, namelen, 7506 dpp, &stateid, usecurstateid, layouttype, layoutlen, 7507 &retonclose, &flh, &laystat, cred, p); 7508 NFSCL_DEBUG(4, "aft nfsrpc_openlayoutrpc laystat=%d err=%d\n", 7509 laystat, error); 7510 laystat = nfsrpc_layoutgetres(nmp, vp, newfhp, newfhlen, 7511 &stateid, retonclose, NULL, &lyp, &flh, layouttype, laystat, 7512 &islocked, cred, p); 7513 } else 7514 error = nfsrpc_openrpc(nmp, vp, nfhp, fhlen, newfhp, newfhlen, 7515 mode, op, name, namelen, dpp, 0, 0, cred, p, 0, 0); 7516 if (islocked == 2) 7517 nfscl_rellayout(lyp, 1); 7518 else if (islocked == 1) 7519 nfscl_rellayout(lyp, 0); 7520 return (error); 7521 } 7522 7523 /* 7524 * This function does an Open+LayoutGet for an NFSv4.1 mount with pNFS 7525 * enabled, only for the CLAIM_NULL case. All other NFSv4 Opens are 7526 * handled by nfsrpc_openrpc(). 7527 * For the case where op == NULL, dvp is the directory. When op != NULL, it 7528 * can be NULL. 7529 */ 7530 static int 7531 nfsrpc_openlayoutrpc(struct nfsmount *nmp, vnode_t vp, u_int8_t *nfhp, 7532 int fhlen, uint8_t *newfhp, int newfhlen, uint32_t mode, 7533 struct nfsclopen *op, uint8_t *name, int namelen, struct nfscldeleg **dpp, 7534 nfsv4stateid_t *stateidp, int usecurstateid, int layouttype, 7535 int layoutlen, int *retonclosep, struct nfsclflayouthead *flhp, 7536 int *laystatp, struct ucred *cred, NFSPROC_T *p) 7537 { 7538 uint32_t *tl; 7539 struct nfsrv_descript nfsd, *nd = &nfsd; 7540 struct nfscldeleg *ndp = NULL; 7541 struct nfsvattr nfsva; 7542 struct nfsclsession *tsep; 7543 uint32_t rflags, deleg; 7544 nfsattrbit_t attrbits; 7545 int error, ret, acesize, limitby, iomode; 7546 7547 *dpp = NULL; 7548 *laystatp = ENXIO; 7549 nfscl_reqstart(nd, NFSPROC_OPENLAYGET, nmp, nfhp, fhlen, NULL, NULL, 7550 0, 0); 7551 NFSM_BUILD(tl, uint32_t *, 5 * NFSX_UNSIGNED); 7552 *tl++ = txdr_unsigned(op->nfso_own->nfsow_seqid); 7553 *tl++ = txdr_unsigned(mode & NFSV4OPEN_ACCESSBOTH); 7554 *tl++ = txdr_unsigned((mode >> NFSLCK_SHIFT) & NFSV4OPEN_DENYBOTH); 7555 tsep = nfsmnt_mdssession(nmp); 7556 *tl++ = tsep->nfsess_clientid.lval[0]; 7557 *tl = tsep->nfsess_clientid.lval[1]; 7558 nfsm_strtom(nd, op->nfso_own->nfsow_owner, NFSV4CL_LOCKNAMELEN); 7559 NFSM_BUILD(tl, uint32_t *, 2 * NFSX_UNSIGNED); 7560 *tl++ = txdr_unsigned(NFSV4OPEN_NOCREATE); 7561 *tl = txdr_unsigned(NFSV4OPEN_CLAIMNULL); 7562 nfsm_strtom(nd, name, namelen); 7563 NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED); 7564 *tl = txdr_unsigned(NFSV4OP_GETATTR); 7565 NFSZERO_ATTRBIT(&attrbits); 7566 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_CHANGE); 7567 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_TIMEMODIFY); 7568 nfsrv_putattrbit(nd, &attrbits); 7569 NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED); 7570 *tl = txdr_unsigned(NFSV4OP_LAYOUTGET); 7571 if ((mode & NFSV4OPEN_ACCESSWRITE) != 0) 7572 iomode = NFSLAYOUTIOMODE_RW; 7573 else 7574 iomode = NFSLAYOUTIOMODE_READ; 7575 nfsrv_setuplayoutget(nd, iomode, 0, UINT64_MAX, 0, stateidp, 7576 layouttype, layoutlen, usecurstateid); 7577 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, vp, p, cred, 7578 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 7579 if (error != 0) 7580 return (error); 7581 NFSCL_INCRSEQID(op->nfso_own->nfsow_seqid, nd); 7582 if (nd->nd_repstat != 0) 7583 *laystatp = nd->nd_repstat; 7584 if ((nd->nd_flag & ND_NOMOREDATA) == 0) { 7585 /* ND_NOMOREDATA will be set if the Open operation failed. */ 7586 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID + 7587 6 * NFSX_UNSIGNED); 7588 op->nfso_stateid.seqid = *tl++; 7589 op->nfso_stateid.other[0] = *tl++; 7590 op->nfso_stateid.other[1] = *tl++; 7591 op->nfso_stateid.other[2] = *tl; 7592 rflags = fxdr_unsigned(u_int32_t, *(tl + 6)); 7593 error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL); 7594 if (error != 0) 7595 goto nfsmout; 7596 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 7597 deleg = fxdr_unsigned(u_int32_t, *tl); 7598 if (deleg == NFSV4OPEN_DELEGATEREAD || 7599 deleg == NFSV4OPEN_DELEGATEWRITE) { 7600 if (!(op->nfso_own->nfsow_clp->nfsc_flags & 7601 NFSCLFLAGS_FIRSTDELEG)) 7602 op->nfso_own->nfsow_clp->nfsc_flags |= 7603 (NFSCLFLAGS_FIRSTDELEG | NFSCLFLAGS_GOTDELEG); 7604 ndp = malloc(sizeof(struct nfscldeleg) + newfhlen, 7605 M_NFSCLDELEG, M_WAITOK); 7606 LIST_INIT(&ndp->nfsdl_owner); 7607 LIST_INIT(&ndp->nfsdl_lock); 7608 ndp->nfsdl_clp = op->nfso_own->nfsow_clp; 7609 ndp->nfsdl_fhlen = newfhlen; 7610 NFSBCOPY(newfhp, ndp->nfsdl_fh, newfhlen); 7611 newnfs_copyincred(cred, &ndp->nfsdl_cred); 7612 nfscl_lockinit(&ndp->nfsdl_rwlock); 7613 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID + 7614 NFSX_UNSIGNED); 7615 ndp->nfsdl_stateid.seqid = *tl++; 7616 ndp->nfsdl_stateid.other[0] = *tl++; 7617 ndp->nfsdl_stateid.other[1] = *tl++; 7618 ndp->nfsdl_stateid.other[2] = *tl++; 7619 ret = fxdr_unsigned(int, *tl); 7620 if (deleg == NFSV4OPEN_DELEGATEWRITE) { 7621 ndp->nfsdl_flags = NFSCLDL_WRITE; 7622 /* 7623 * Indicates how much the file can grow. 7624 */ 7625 NFSM_DISSECT(tl, u_int32_t *, 7626 3 * NFSX_UNSIGNED); 7627 limitby = fxdr_unsigned(int, *tl++); 7628 switch (limitby) { 7629 case NFSV4OPEN_LIMITSIZE: 7630 ndp->nfsdl_sizelimit = fxdr_hyper(tl); 7631 break; 7632 case NFSV4OPEN_LIMITBLOCKS: 7633 ndp->nfsdl_sizelimit = 7634 fxdr_unsigned(u_int64_t, *tl++); 7635 ndp->nfsdl_sizelimit *= 7636 fxdr_unsigned(u_int64_t, *tl); 7637 break; 7638 default: 7639 error = NFSERR_BADXDR; 7640 goto nfsmout; 7641 }; 7642 } else 7643 ndp->nfsdl_flags = NFSCLDL_READ; 7644 if (ret != 0) 7645 ndp->nfsdl_flags |= NFSCLDL_RECALL; 7646 error = nfsrv_dissectace(nd, &ndp->nfsdl_ace, &ret, 7647 &acesize, p); 7648 if (error != 0) 7649 goto nfsmout; 7650 } else if (deleg != NFSV4OPEN_DELEGATENONE) { 7651 error = NFSERR_BADXDR; 7652 goto nfsmout; 7653 } 7654 if ((rflags & NFSV4OPEN_LOCKTYPEPOSIX) != 0 || 7655 nfscl_assumeposixlocks) 7656 op->nfso_posixlock = 1; 7657 else 7658 op->nfso_posixlock = 0; 7659 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 7660 /* If the 2nd element == NFS_OK, the Getattr succeeded. */ 7661 if (*++tl == 0) { 7662 error = nfsv4_loadattr(nd, NULL, &nfsva, NULL, 7663 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0, 7664 NULL, NULL, NULL, p, cred); 7665 if (error != 0) 7666 goto nfsmout; 7667 if (ndp != NULL) { 7668 ndp->nfsdl_change = nfsva.na_filerev; 7669 ndp->nfsdl_modtime = nfsva.na_mtime; 7670 ndp->nfsdl_flags |= NFSCLDL_MODTIMESET; 7671 *dpp = ndp; 7672 ndp = NULL; 7673 } 7674 /* 7675 * At this point, the Open has succeeded, so set 7676 * nd_repstat = NFS_OK. If the Layoutget failed, 7677 * this function just won't return a layout. 7678 */ 7679 if (nd->nd_repstat == 0) { 7680 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED); 7681 *laystatp = fxdr_unsigned(int, *++tl); 7682 if (*laystatp == 0) { 7683 error = nfsrv_parselayoutget(nmp, nd, 7684 stateidp, retonclosep, flhp); 7685 if (error != 0) 7686 *laystatp = error; 7687 } 7688 } else 7689 nd->nd_repstat = 0; /* Return 0 for Open. */ 7690 } 7691 } 7692 if (nd->nd_repstat != 0 && error == 0) 7693 error = nd->nd_repstat; 7694 nfsmout: 7695 free(ndp, M_NFSCLDELEG); 7696 m_freem(nd->nd_mrep); 7697 return (error); 7698 } 7699 7700 /* 7701 * Similar nfsrpc_createv4(), but also does the LayoutGet operation. 7702 * Used only for mounts with pNFS enabled. 7703 */ 7704 static int 7705 nfsrpc_createlayout(vnode_t dvp, char *name, int namelen, struct vattr *vap, 7706 nfsquad_t cverf, int fmode, struct nfsclowner *owp, struct nfscldeleg **dpp, 7707 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap, 7708 struct nfsvattr *nnap, struct nfsfh **nfhpp, int *attrflagp, 7709 int *dattrflagp, void *dstuff, int *unlockedp, nfsv4stateid_t *stateidp, 7710 int usecurstateid, int layouttype, int layoutlen, int *retonclosep, 7711 struct nfsclflayouthead *flhp, int *laystatp) 7712 { 7713 uint32_t *tl; 7714 int error = 0, deleg, newone, ret, acesize, limitby; 7715 struct nfsrv_descript nfsd, *nd = &nfsd; 7716 struct nfsclopen *op; 7717 struct nfscldeleg *dp = NULL; 7718 struct nfsnode *np; 7719 struct nfsfh *nfhp; 7720 struct nfsclsession *tsep; 7721 nfsattrbit_t attrbits; 7722 nfsv4stateid_t stateid; 7723 struct nfsmount *nmp; 7724 7725 nmp = VFSTONFS(dvp->v_mount); 7726 np = VTONFS(dvp); 7727 *laystatp = ENXIO; 7728 *unlockedp = 0; 7729 *nfhpp = NULL; 7730 *dpp = NULL; 7731 *attrflagp = 0; 7732 *dattrflagp = 0; 7733 if (namelen > NFS_MAXNAMLEN) 7734 return (ENAMETOOLONG); 7735 NFSCL_REQSTART(nd, NFSPROC_CREATELAYGET, dvp); 7736 /* 7737 * For V4, this is actually an Open op. 7738 */ 7739 NFSM_BUILD(tl, u_int32_t *, 5 * NFSX_UNSIGNED); 7740 *tl++ = txdr_unsigned(owp->nfsow_seqid); 7741 *tl++ = txdr_unsigned(NFSV4OPEN_ACCESSWRITE | 7742 NFSV4OPEN_ACCESSREAD); 7743 *tl++ = txdr_unsigned(NFSV4OPEN_DENYNONE); 7744 tsep = nfsmnt_mdssession(nmp); 7745 *tl++ = tsep->nfsess_clientid.lval[0]; 7746 *tl = tsep->nfsess_clientid.lval[1]; 7747 nfsm_strtom(nd, owp->nfsow_owner, NFSV4CL_LOCKNAMELEN); 7748 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 7749 *tl++ = txdr_unsigned(NFSV4OPEN_CREATE); 7750 if ((fmode & O_EXCL) != 0) { 7751 if (NFSHASSESSPERSIST(nmp)) { 7752 /* Use GUARDED for persistent sessions. */ 7753 *tl = txdr_unsigned(NFSCREATE_GUARDED); 7754 nfscl_fillsattr(nd, vap, dvp, 0, 0); 7755 } else { 7756 /* Otherwise, use EXCLUSIVE4_1. */ 7757 *tl = txdr_unsigned(NFSCREATE_EXCLUSIVE41); 7758 NFSM_BUILD(tl, u_int32_t *, NFSX_VERF); 7759 *tl++ = cverf.lval[0]; 7760 *tl = cverf.lval[1]; 7761 nfscl_fillsattr(nd, vap, dvp, 0, 0); 7762 } 7763 } else { 7764 *tl = txdr_unsigned(NFSCREATE_UNCHECKED); 7765 nfscl_fillsattr(nd, vap, dvp, 0, 0); 7766 } 7767 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 7768 *tl = txdr_unsigned(NFSV4OPEN_CLAIMNULL); 7769 nfsm_strtom(nd, name, namelen); 7770 /* Get the new file's handle and attributes, plus save the FH. */ 7771 NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 7772 *tl++ = txdr_unsigned(NFSV4OP_SAVEFH); 7773 *tl++ = txdr_unsigned(NFSV4OP_GETFH); 7774 *tl = txdr_unsigned(NFSV4OP_GETATTR); 7775 NFSGETATTR_ATTRBIT(&attrbits); 7776 nfsrv_putattrbit(nd, &attrbits); 7777 /* Get the directory's post-op attributes. */ 7778 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 7779 *tl = txdr_unsigned(NFSV4OP_PUTFH); 7780 nfsm_fhtom(nd, np->n_fhp->nfh_fh, np->n_fhp->nfh_len, 0); 7781 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 7782 *tl = txdr_unsigned(NFSV4OP_GETATTR); 7783 nfsrv_putattrbit(nd, &attrbits); 7784 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 7785 *tl++ = txdr_unsigned(NFSV4OP_RESTOREFH); 7786 *tl = txdr_unsigned(NFSV4OP_LAYOUTGET); 7787 nfsrv_setuplayoutget(nd, NFSLAYOUTIOMODE_RW, 0, UINT64_MAX, 0, stateidp, 7788 layouttype, layoutlen, usecurstateid); 7789 error = nfscl_request(nd, dvp, p, cred, dstuff); 7790 if (error != 0) 7791 return (error); 7792 NFSCL_DEBUG(4, "nfsrpc_createlayout stat=%d err=%d\n", nd->nd_repstat, 7793 error); 7794 if (nd->nd_repstat != 0) 7795 *laystatp = nd->nd_repstat; 7796 NFSCL_INCRSEQID(owp->nfsow_seqid, nd); 7797 if ((nd->nd_flag & ND_NOMOREDATA) == 0) { 7798 NFSCL_DEBUG(4, "nfsrpc_createlayout open succeeded\n"); 7799 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID + 7800 6 * NFSX_UNSIGNED); 7801 stateid.seqid = *tl++; 7802 stateid.other[0] = *tl++; 7803 stateid.other[1] = *tl++; 7804 stateid.other[2] = *tl; 7805 nfsrv_getattrbits(nd, &attrbits, NULL, NULL); 7806 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 7807 deleg = fxdr_unsigned(int, *tl); 7808 if (deleg == NFSV4OPEN_DELEGATEREAD || 7809 deleg == NFSV4OPEN_DELEGATEWRITE) { 7810 if (!(owp->nfsow_clp->nfsc_flags & 7811 NFSCLFLAGS_FIRSTDELEG)) 7812 owp->nfsow_clp->nfsc_flags |= 7813 (NFSCLFLAGS_FIRSTDELEG | NFSCLFLAGS_GOTDELEG); 7814 dp = malloc(sizeof(struct nfscldeleg) + NFSX_V4FHMAX, 7815 M_NFSCLDELEG, M_WAITOK); 7816 LIST_INIT(&dp->nfsdl_owner); 7817 LIST_INIT(&dp->nfsdl_lock); 7818 dp->nfsdl_clp = owp->nfsow_clp; 7819 newnfs_copyincred(cred, &dp->nfsdl_cred); 7820 nfscl_lockinit(&dp->nfsdl_rwlock); 7821 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID + 7822 NFSX_UNSIGNED); 7823 dp->nfsdl_stateid.seqid = *tl++; 7824 dp->nfsdl_stateid.other[0] = *tl++; 7825 dp->nfsdl_stateid.other[1] = *tl++; 7826 dp->nfsdl_stateid.other[2] = *tl++; 7827 ret = fxdr_unsigned(int, *tl); 7828 if (deleg == NFSV4OPEN_DELEGATEWRITE) { 7829 dp->nfsdl_flags = NFSCLDL_WRITE; 7830 /* 7831 * Indicates how much the file can grow. 7832 */ 7833 NFSM_DISSECT(tl, u_int32_t *, 7834 3 * NFSX_UNSIGNED); 7835 limitby = fxdr_unsigned(int, *tl++); 7836 switch (limitby) { 7837 case NFSV4OPEN_LIMITSIZE: 7838 dp->nfsdl_sizelimit = fxdr_hyper(tl); 7839 break; 7840 case NFSV4OPEN_LIMITBLOCKS: 7841 dp->nfsdl_sizelimit = 7842 fxdr_unsigned(u_int64_t, *tl++); 7843 dp->nfsdl_sizelimit *= 7844 fxdr_unsigned(u_int64_t, *tl); 7845 break; 7846 default: 7847 error = NFSERR_BADXDR; 7848 goto nfsmout; 7849 }; 7850 } else { 7851 dp->nfsdl_flags = NFSCLDL_READ; 7852 } 7853 if (ret != 0) 7854 dp->nfsdl_flags |= NFSCLDL_RECALL; 7855 error = nfsrv_dissectace(nd, &dp->nfsdl_ace, &ret, 7856 &acesize, p); 7857 if (error != 0) 7858 goto nfsmout; 7859 } else if (deleg != NFSV4OPEN_DELEGATENONE) { 7860 error = NFSERR_BADXDR; 7861 goto nfsmout; 7862 } 7863 7864 /* Now, we should have the status for the SaveFH. */ 7865 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED); 7866 if (*++tl == 0) { 7867 NFSCL_DEBUG(4, "nfsrpc_createlayout SaveFH ok\n"); 7868 /* 7869 * Now, process the GetFH and Getattr for the newly 7870 * created file. nfscl_mtofh() will set 7871 * ND_NOMOREDATA if these weren't successful. 7872 */ 7873 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp); 7874 NFSCL_DEBUG(4, "aft nfscl_mtofh err=%d\n", error); 7875 if (error != 0) 7876 goto nfsmout; 7877 } else 7878 nd->nd_flag |= ND_NOMOREDATA; 7879 /* Now we have the PutFH and Getattr for the directory. */ 7880 if ((nd->nd_flag & ND_NOMOREDATA) == 0) { 7881 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED); 7882 if (*++tl != 0) 7883 nd->nd_flag |= ND_NOMOREDATA; 7884 else { 7885 NFSM_DISSECT(tl, uint32_t *, 2 * 7886 NFSX_UNSIGNED); 7887 if (*++tl != 0) 7888 nd->nd_flag |= ND_NOMOREDATA; 7889 } 7890 } 7891 if ((nd->nd_flag & ND_NOMOREDATA) == 0) { 7892 /* Load the directory attributes. */ 7893 error = nfsm_loadattr(nd, dnap); 7894 NFSCL_DEBUG(4, "aft nfsm_loadattr err=%d\n", error); 7895 if (error != 0) 7896 goto nfsmout; 7897 *dattrflagp = 1; 7898 if (dp != NULL && *attrflagp != 0) { 7899 dp->nfsdl_change = nnap->na_filerev; 7900 dp->nfsdl_modtime = nnap->na_mtime; 7901 dp->nfsdl_flags |= NFSCLDL_MODTIMESET; 7902 } 7903 /* 7904 * We can now complete the Open state. 7905 */ 7906 nfhp = *nfhpp; 7907 if (dp != NULL) { 7908 dp->nfsdl_fhlen = nfhp->nfh_len; 7909 NFSBCOPY(nfhp->nfh_fh, dp->nfsdl_fh, 7910 nfhp->nfh_len); 7911 } 7912 /* 7913 * Get an Open structure that will be 7914 * attached to the OpenOwner, acquired already. 7915 */ 7916 error = nfscl_open(dvp, nfhp->nfh_fh, nfhp->nfh_len, 7917 (NFSV4OPEN_ACCESSWRITE | NFSV4OPEN_ACCESSREAD), 0, 7918 cred, p, NULL, &op, &newone, NULL, 0); 7919 if (error != 0) 7920 goto nfsmout; 7921 op->nfso_stateid = stateid; 7922 newnfs_copyincred(cred, &op->nfso_cred); 7923 7924 nfscl_openrelease(nmp, op, error, newone); 7925 *unlockedp = 1; 7926 7927 /* Now, handle the RestoreFH and LayoutGet. */ 7928 if (nd->nd_repstat == 0) { 7929 NFSM_DISSECT(tl, uint32_t *, 4 * NFSX_UNSIGNED); 7930 *laystatp = fxdr_unsigned(int, *(tl + 3)); 7931 if (*laystatp == 0) { 7932 error = nfsrv_parselayoutget(nmp, nd, 7933 stateidp, retonclosep, flhp); 7934 if (error != 0) 7935 *laystatp = error; 7936 } 7937 NFSCL_DEBUG(4, "aft nfsrv_parselayout err=%d\n", 7938 error); 7939 } else 7940 nd->nd_repstat = 0; 7941 } 7942 } 7943 if (nd->nd_repstat != 0 && error == 0) 7944 error = nd->nd_repstat; 7945 if (error == NFSERR_STALECLIENTID || error == NFSERR_BADSESSION) 7946 nfscl_initiate_recovery(owp->nfsow_clp); 7947 nfsmout: 7948 NFSCL_DEBUG(4, "eo nfsrpc_createlayout err=%d\n", error); 7949 if (error == 0) 7950 *dpp = dp; 7951 else 7952 free(dp, M_NFSCLDELEG); 7953 m_freem(nd->nd_mrep); 7954 return (error); 7955 } 7956 7957 /* 7958 * Similar to nfsrpc_getopenlayout(), except that it used for the Create case. 7959 */ 7960 static int 7961 nfsrpc_getcreatelayout(vnode_t dvp, char *name, int namelen, struct vattr *vap, 7962 nfsquad_t cverf, int fmode, struct nfsclowner *owp, struct nfscldeleg **dpp, 7963 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap, 7964 struct nfsvattr *nnap, struct nfsfh **nfhpp, int *attrflagp, 7965 int *dattrflagp, void *dstuff, int *unlockedp) 7966 { 7967 struct nfscllayout *lyp; 7968 struct nfsclflayouthead flh; 7969 struct nfsfh *nfhp; 7970 struct nfsclsession *tsep; 7971 struct nfsmount *nmp; 7972 nfsv4stateid_t stateid; 7973 int error, layoutlen, layouttype, retonclose, laystat; 7974 7975 error = 0; 7976 nmp = VFSTONFS(dvp->v_mount); 7977 if (NFSHASFLEXFILE(nmp)) 7978 layouttype = NFSLAYOUT_FLEXFILE; 7979 else 7980 layouttype = NFSLAYOUT_NFSV4_1_FILES; 7981 LIST_INIT(&flh); 7982 tsep = nfsmnt_mdssession(nmp); 7983 layoutlen = tsep->nfsess_maxcache - (NFSX_STATEID + 3 * NFSX_UNSIGNED); 7984 error = nfsrpc_createlayout(dvp, name, namelen, vap, cverf, fmode, 7985 owp, dpp, cred, p, dnap, nnap, nfhpp, attrflagp, dattrflagp, 7986 dstuff, unlockedp, &stateid, 1, layouttype, layoutlen, &retonclose, 7987 &flh, &laystat); 7988 NFSCL_DEBUG(4, "aft nfsrpc_createlayoutrpc laystat=%d err=%d\n", 7989 laystat, error); 7990 lyp = NULL; 7991 if (laystat == 0) { 7992 nfhp = *nfhpp; 7993 laystat = nfsrpc_layoutgetres(nmp, dvp, nfhp->nfh_fh, 7994 nfhp->nfh_len, &stateid, retonclose, NULL, &lyp, &flh, 7995 layouttype, laystat, NULL, cred, p); 7996 } else 7997 laystat = nfsrpc_layoutgetres(nmp, dvp, NULL, 0, &stateid, 7998 retonclose, NULL, &lyp, &flh, layouttype, laystat, NULL, 7999 cred, p); 8000 if (laystat == 0) 8001 nfscl_rellayout(lyp, 0); 8002 return (error); 8003 } 8004 8005 /* 8006 * Process the results of a layoutget() operation. 8007 */ 8008 static int 8009 nfsrpc_layoutgetres(struct nfsmount *nmp, vnode_t vp, uint8_t *newfhp, 8010 int newfhlen, nfsv4stateid_t *stateidp, int retonclose, uint32_t *notifybit, 8011 struct nfscllayout **lypp, struct nfsclflayouthead *flhp, int layouttype, 8012 int laystat, int *islockedp, struct ucred *cred, NFSPROC_T *p) 8013 { 8014 struct nfsclflayout *tflp; 8015 struct nfscldevinfo *dip; 8016 uint8_t *dev; 8017 int i, mirrorcnt; 8018 8019 if (laystat == NFSERR_UNKNLAYOUTTYPE) { 8020 NFSLOCKMNT(nmp); 8021 if (!NFSHASFLEXFILE(nmp)) { 8022 /* Switch to using Flex File Layout. */ 8023 nmp->nm_state |= NFSSTA_FLEXFILE; 8024 } else if (layouttype == NFSLAYOUT_FLEXFILE) { 8025 /* Disable pNFS. */ 8026 NFSCL_DEBUG(1, "disable PNFS\n"); 8027 nmp->nm_state &= ~(NFSSTA_PNFS | NFSSTA_FLEXFILE); 8028 } 8029 NFSUNLOCKMNT(nmp); 8030 } 8031 if (laystat == 0) { 8032 NFSCL_DEBUG(4, "nfsrpc_layoutgetres at FOREACH\n"); 8033 LIST_FOREACH(tflp, flhp, nfsfl_list) { 8034 if (layouttype == NFSLAYOUT_FLEXFILE) 8035 mirrorcnt = tflp->nfsfl_mirrorcnt; 8036 else 8037 mirrorcnt = 1; 8038 for (i = 0; i < mirrorcnt; i++) { 8039 laystat = nfscl_adddevinfo(nmp, NULL, i, tflp); 8040 NFSCL_DEBUG(4, "aft adddev=%d\n", laystat); 8041 if (laystat != 0) { 8042 if (layouttype == NFSLAYOUT_FLEXFILE) 8043 dev = tflp->nfsfl_ffm[i].dev; 8044 else 8045 dev = tflp->nfsfl_dev; 8046 laystat = nfsrpc_getdeviceinfo(nmp, dev, 8047 layouttype, notifybit, &dip, cred, 8048 p); 8049 NFSCL_DEBUG(4, "aft nfsrpc_gdi=%d\n", 8050 laystat); 8051 if (laystat != 0) 8052 goto out; 8053 laystat = nfscl_adddevinfo(nmp, dip, i, 8054 tflp); 8055 if (laystat != 0) 8056 printf("nfsrpc_layoutgetresout" 8057 ": cannot add\n"); 8058 } 8059 } 8060 } 8061 } 8062 out: 8063 if (laystat == 0) { 8064 /* 8065 * nfscl_layout() always returns with the nfsly_lock 8066 * set to a refcnt (shared lock). 8067 * Passing in dvp is sufficient, since it is only used to 8068 * get the fsid for the file system. 8069 */ 8070 laystat = nfscl_layout(nmp, vp, newfhp, newfhlen, stateidp, 8071 layouttype, retonclose, flhp, lypp, cred, p); 8072 NFSCL_DEBUG(4, "nfsrpc_layoutgetres: aft nfscl_layout=%d\n", 8073 laystat); 8074 if (laystat == 0 && islockedp != NULL) 8075 *islockedp = 1; 8076 } 8077 return (laystat); 8078 } 8079 8080 /* 8081 * nfs copy_file_range operation. 8082 */ 8083 int 8084 nfsrpc_copy_file_range(vnode_t invp, off_t *inoffp, vnode_t outvp, 8085 off_t *outoffp, size_t *lenp, unsigned int flags, int *inattrflagp, 8086 struct nfsvattr *innap, int *outattrflagp, struct nfsvattr *outnap, 8087 struct ucred *cred, bool consecutive, bool *must_commitp) 8088 { 8089 int commit, error, expireret = 0, retrycnt; 8090 u_int32_t clidrev = 0; 8091 struct nfsmount *nmp = VFSTONFS(invp->v_mount); 8092 struct nfsfh *innfhp = NULL, *outnfhp = NULL; 8093 nfsv4stateid_t instateid, outstateid; 8094 void *inlckp, *outlckp; 8095 8096 if (nmp->nm_clp != NULL) 8097 clidrev = nmp->nm_clp->nfsc_clientidrev; 8098 innfhp = VTONFS(invp)->n_fhp; 8099 outnfhp = VTONFS(outvp)->n_fhp; 8100 retrycnt = 0; 8101 do { 8102 /* Get both stateids. */ 8103 inlckp = NULL; 8104 nfscl_getstateid(invp, innfhp->nfh_fh, innfhp->nfh_len, 8105 NFSV4OPEN_ACCESSREAD, 0, NULL, curthread, &instateid, 8106 &inlckp); 8107 outlckp = NULL; 8108 nfscl_getstateid(outvp, outnfhp->nfh_fh, outnfhp->nfh_len, 8109 NFSV4OPEN_ACCESSWRITE, 0, NULL, curthread, &outstateid, 8110 &outlckp); 8111 8112 error = nfsrpc_copyrpc(invp, *inoffp, outvp, *outoffp, lenp, 8113 &instateid, &outstateid, innap, inattrflagp, outnap, 8114 outattrflagp, consecutive, &commit, cred, curthread); 8115 if (error == 0) { 8116 if (commit != NFSWRITE_FILESYNC) 8117 *must_commitp = true; 8118 *inoffp += *lenp; 8119 *outoffp += *lenp; 8120 } else if (error == NFSERR_STALESTATEID) 8121 nfscl_initiate_recovery(nmp->nm_clp); 8122 if (inlckp != NULL) 8123 nfscl_lockderef(inlckp); 8124 if (outlckp != NULL) 8125 nfscl_lockderef(outlckp); 8126 if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 8127 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 8128 error == NFSERR_OLDSTATEID || error == NFSERR_BADSESSION) { 8129 (void) nfs_catnap(PZERO, error, "nfs_cfr"); 8130 } else if ((error == NFSERR_EXPIRED || 8131 error == NFSERR_BADSTATEID) && clidrev != 0) { 8132 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, 8133 curthread); 8134 } 8135 retrycnt++; 8136 } while (error == NFSERR_GRACE || error == NFSERR_DELAY || 8137 error == NFSERR_STALESTATEID || error == NFSERR_BADSESSION || 8138 error == NFSERR_STALEDONTRECOVER || 8139 (error == NFSERR_OLDSTATEID && retrycnt < 20) || 8140 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) && 8141 expireret == 0 && clidrev != 0 && retrycnt < 4)); 8142 if (error != 0 && (retrycnt >= 4 || 8143 error == NFSERR_STALESTATEID || error == NFSERR_BADSESSION || 8144 error == NFSERR_STALEDONTRECOVER)) 8145 error = EIO; 8146 return (error); 8147 } 8148 8149 /* 8150 * The copy RPC. 8151 */ 8152 static int 8153 nfsrpc_copyrpc(vnode_t invp, off_t inoff, vnode_t outvp, off_t outoff, 8154 size_t *lenp, nfsv4stateid_t *instateidp, nfsv4stateid_t *outstateidp, 8155 struct nfsvattr *innap, int *inattrflagp, struct nfsvattr *outnap, 8156 int *outattrflagp, bool consecutive, int *commitp, struct ucred *cred, 8157 NFSPROC_T *p) 8158 { 8159 uint32_t *tl; 8160 int error; 8161 struct nfsrv_descript nfsd; 8162 struct nfsrv_descript *nd = &nfsd; 8163 struct nfsmount *nmp; 8164 nfsattrbit_t attrbits; 8165 uint64_t len; 8166 8167 nmp = VFSTONFS(outvp->v_mount); 8168 *inattrflagp = *outattrflagp = 0; 8169 *commitp = NFSWRITE_UNSTABLE; 8170 len = *lenp; 8171 *lenp = 0; 8172 if (len > nfs_maxcopyrange) 8173 len = nfs_maxcopyrange; 8174 NFSCL_REQSTART(nd, NFSPROC_COPY, invp); 8175 NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED); 8176 *tl = txdr_unsigned(NFSV4OP_GETATTR); 8177 NFSGETATTR_ATTRBIT(&attrbits); 8178 nfsrv_putattrbit(nd, &attrbits); 8179 NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED); 8180 *tl = txdr_unsigned(NFSV4OP_PUTFH); 8181 nfsm_fhtom(nd, VTONFS(outvp)->n_fhp->nfh_fh, 8182 VTONFS(outvp)->n_fhp->nfh_len, 0); 8183 NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED); 8184 *tl = txdr_unsigned(NFSV4OP_COPY); 8185 nfsm_stateidtom(nd, instateidp, NFSSTATEID_PUTSTATEID); 8186 nfsm_stateidtom(nd, outstateidp, NFSSTATEID_PUTSTATEID); 8187 NFSM_BUILD(tl, uint32_t *, 3 * NFSX_HYPER + 4 * NFSX_UNSIGNED); 8188 txdr_hyper(inoff, tl); tl += 2; 8189 txdr_hyper(outoff, tl); tl += 2; 8190 txdr_hyper(len, tl); tl += 2; 8191 if (consecutive) 8192 *tl++ = newnfs_true; 8193 else 8194 *tl++ = newnfs_false; 8195 *tl++ = newnfs_true; 8196 *tl++ = 0; 8197 *tl = txdr_unsigned(NFSV4OP_GETATTR); 8198 NFSWRITEGETATTR_ATTRBIT(&attrbits); 8199 nfsrv_putattrbit(nd, &attrbits); 8200 error = nfscl_request(nd, invp, p, cred, NULL); 8201 if (error != 0) 8202 return (error); 8203 if ((nd->nd_flag & ND_NOMOREDATA) == 0) { 8204 /* Get the input file's attributes. */ 8205 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED); 8206 if (*(tl + 1) == 0) { 8207 error = nfsm_loadattr(nd, innap); 8208 if (error != 0) 8209 goto nfsmout; 8210 *inattrflagp = 1; 8211 } else 8212 nd->nd_flag |= ND_NOMOREDATA; 8213 } 8214 /* Skip over return stat for PutFH. */ 8215 if ((nd->nd_flag & ND_NOMOREDATA) == 0) { 8216 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED); 8217 if (*++tl != 0) 8218 nd->nd_flag |= ND_NOMOREDATA; 8219 } 8220 /* Skip over return stat for Copy. */ 8221 if ((nd->nd_flag & ND_NOMOREDATA) == 0) 8222 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED); 8223 if (nd->nd_repstat == 0) { 8224 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 8225 if (*tl != 0) { 8226 /* There should be no callback ids. */ 8227 error = NFSERR_BADXDR; 8228 goto nfsmout; 8229 } 8230 NFSM_DISSECT(tl, uint32_t *, NFSX_HYPER + 3 * NFSX_UNSIGNED + 8231 NFSX_VERF); 8232 len = fxdr_hyper(tl); tl += 2; 8233 *commitp = fxdr_unsigned(int, *tl++); 8234 NFSLOCKMNT(nmp); 8235 if (!NFSHASWRITEVERF(nmp)) { 8236 NFSBCOPY(tl, nmp->nm_verf, NFSX_VERF); 8237 NFSSETWRITEVERF(nmp); 8238 } else if (NFSBCMP(tl, nmp->nm_verf, NFSX_VERF)) { 8239 NFSBCOPY(tl, nmp->nm_verf, NFSX_VERF); 8240 nd->nd_repstat = NFSERR_STALEWRITEVERF; 8241 } 8242 NFSUNLOCKMNT(nmp); 8243 tl += (NFSX_VERF / NFSX_UNSIGNED); 8244 if (nd->nd_repstat == 0 && *++tl != newnfs_true) 8245 /* Must be a synchronous copy. */ 8246 nd->nd_repstat = NFSERR_NOTSUPP; 8247 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED); 8248 error = nfsm_loadattr(nd, outnap); 8249 if (error == 0) 8250 *outattrflagp = NFS_LATTR_NOSHRINK; 8251 if (nd->nd_repstat == 0) 8252 *lenp = len; 8253 } else if (nd->nd_repstat == NFSERR_OFFLOADNOREQS) { 8254 /* 8255 * For the case where consecutive is not supported, but 8256 * synchronous is supported, we can try consecutive == false 8257 * by returning this error. Otherwise, return NFSERR_NOTSUPP, 8258 * since Copy cannot be done. 8259 */ 8260 if ((nd->nd_flag & ND_NOMOREDATA) == 0) { 8261 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED); 8262 if (!consecutive || *++tl == newnfs_false) 8263 nd->nd_repstat = NFSERR_NOTSUPP; 8264 } else 8265 nd->nd_repstat = NFSERR_BADXDR; 8266 } 8267 if (error == 0) 8268 error = nd->nd_repstat; 8269 nfsmout: 8270 m_freem(nd->nd_mrep); 8271 return (error); 8272 } 8273 8274 /* 8275 * Seek operation. 8276 */ 8277 int 8278 nfsrpc_seek(vnode_t vp, off_t *offp, bool *eofp, int content, 8279 struct ucred *cred, struct nfsvattr *nap, int *attrflagp) 8280 { 8281 int error, expireret = 0, retrycnt; 8282 u_int32_t clidrev = 0; 8283 struct nfsmount *nmp = VFSTONFS(vp->v_mount); 8284 struct nfsnode *np = VTONFS(vp); 8285 struct nfsfh *nfhp = NULL; 8286 nfsv4stateid_t stateid; 8287 void *lckp; 8288 8289 if (nmp->nm_clp != NULL) 8290 clidrev = nmp->nm_clp->nfsc_clientidrev; 8291 nfhp = np->n_fhp; 8292 retrycnt = 0; 8293 do { 8294 lckp = NULL; 8295 nfscl_getstateid(vp, nfhp->nfh_fh, nfhp->nfh_len, 8296 NFSV4OPEN_ACCESSREAD, 0, cred, curthread, &stateid, &lckp); 8297 error = nfsrpc_seekrpc(vp, offp, &stateid, eofp, content, 8298 nap, attrflagp, cred); 8299 if (error == NFSERR_STALESTATEID) 8300 nfscl_initiate_recovery(nmp->nm_clp); 8301 if (lckp != NULL) 8302 nfscl_lockderef(lckp); 8303 if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 8304 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 8305 error == NFSERR_OLDSTATEID || error == NFSERR_BADSESSION) { 8306 (void) nfs_catnap(PZERO, error, "nfs_seek"); 8307 } else if ((error == NFSERR_EXPIRED || 8308 error == NFSERR_BADSTATEID) && clidrev != 0) { 8309 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, 8310 curthread); 8311 } 8312 retrycnt++; 8313 } while (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 8314 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 8315 error == NFSERR_BADSESSION || 8316 (error == NFSERR_OLDSTATEID && retrycnt < 20) || 8317 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) && 8318 expireret == 0 && clidrev != 0 && retrycnt < 4) || 8319 (error == NFSERR_OPENMODE && retrycnt < 4)); 8320 if (error && retrycnt >= 4) 8321 error = EIO; 8322 return (error); 8323 } 8324 8325 /* 8326 * The seek RPC. 8327 */ 8328 static int 8329 nfsrpc_seekrpc(vnode_t vp, off_t *offp, nfsv4stateid_t *stateidp, bool *eofp, 8330 int content, struct nfsvattr *nap, int *attrflagp, struct ucred *cred) 8331 { 8332 uint32_t *tl; 8333 int error; 8334 struct nfsrv_descript nfsd; 8335 struct nfsrv_descript *nd = &nfsd; 8336 nfsattrbit_t attrbits; 8337 8338 *attrflagp = 0; 8339 NFSCL_REQSTART(nd, NFSPROC_SEEK, vp); 8340 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID); 8341 NFSM_BUILD(tl, uint32_t *, NFSX_HYPER + 2 * NFSX_UNSIGNED); 8342 txdr_hyper(*offp, tl); tl += 2; 8343 *tl++ = txdr_unsigned(content); 8344 *tl = txdr_unsigned(NFSV4OP_GETATTR); 8345 NFSGETATTR_ATTRBIT(&attrbits); 8346 nfsrv_putattrbit(nd, &attrbits); 8347 error = nfscl_request(nd, vp, curthread, cred, NULL); 8348 if (error != 0) 8349 return (error); 8350 if (nd->nd_repstat == 0) { 8351 NFSM_DISSECT(tl, uint32_t *, 3 * NFSX_UNSIGNED + NFSX_HYPER); 8352 if (*tl++ == newnfs_true) 8353 *eofp = true; 8354 else 8355 *eofp = false; 8356 *offp = fxdr_hyper(tl); 8357 /* Just skip over Getattr op status. */ 8358 error = nfsm_loadattr(nd, nap); 8359 if (error == 0) 8360 *attrflagp = 1; 8361 } 8362 error = nd->nd_repstat; 8363 nfsmout: 8364 m_freem(nd->nd_mrep); 8365 return (error); 8366 } 8367 8368 /* 8369 * The getextattr RPC. 8370 */ 8371 int 8372 nfsrpc_getextattr(vnode_t vp, const char *name, struct uio *uiop, ssize_t *lenp, 8373 struct nfsvattr *nap, int *attrflagp, struct ucred *cred, NFSPROC_T *p) 8374 { 8375 uint32_t *tl; 8376 int error; 8377 struct nfsrv_descript nfsd; 8378 struct nfsrv_descript *nd = &nfsd; 8379 nfsattrbit_t attrbits; 8380 uint32_t len, len2; 8381 8382 *attrflagp = 0; 8383 NFSCL_REQSTART(nd, NFSPROC_GETEXTATTR, vp); 8384 nfsm_strtom(nd, name, strlen(name)); 8385 NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED); 8386 *tl = txdr_unsigned(NFSV4OP_GETATTR); 8387 NFSGETATTR_ATTRBIT(&attrbits); 8388 nfsrv_putattrbit(nd, &attrbits); 8389 error = nfscl_request(nd, vp, p, cred, NULL); 8390 if (error != 0) 8391 return (error); 8392 if (nd->nd_repstat == 0) { 8393 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 8394 len = fxdr_unsigned(uint32_t, *tl); 8395 /* Sanity check lengths. */ 8396 if (uiop != NULL && len > 0 && len <= IOSIZE_MAX && 8397 uiop->uio_resid <= UINT32_MAX) { 8398 len2 = uiop->uio_resid; 8399 if (len2 >= len) 8400 error = nfsm_mbufuio(nd, uiop, len); 8401 else { 8402 error = nfsm_mbufuio(nd, uiop, len2); 8403 if (error == 0) { 8404 /* 8405 * nfsm_mbufuio() advances to a multiple 8406 * of 4, so round up len2 as well. Then 8407 * we need to advance over the rest of 8408 * the data, rounding up the remaining 8409 * length. 8410 */ 8411 len2 = NFSM_RNDUP(len2); 8412 len2 = NFSM_RNDUP(len - len2); 8413 if (len2 > 0) 8414 error = nfsm_advance(nd, len2, 8415 -1); 8416 } 8417 } 8418 } else if (uiop == NULL && len > 0) { 8419 /* Just wants the length and not the data. */ 8420 error = nfsm_advance(nd, NFSM_RNDUP(len), -1); 8421 } else if (len > 0) 8422 error = ENOATTR; 8423 if (error != 0) 8424 goto nfsmout; 8425 *lenp = len; 8426 /* Just skip over Getattr op status. */ 8427 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED); 8428 error = nfsm_loadattr(nd, nap); 8429 if (error == 0) 8430 *attrflagp = 1; 8431 } 8432 if (error == 0) 8433 error = nd->nd_repstat; 8434 nfsmout: 8435 m_freem(nd->nd_mrep); 8436 return (error); 8437 } 8438 8439 /* 8440 * The setextattr RPC. 8441 */ 8442 int 8443 nfsrpc_setextattr(vnode_t vp, const char *name, struct uio *uiop, 8444 struct nfsvattr *nap, int *attrflagp, struct ucred *cred, NFSPROC_T *p) 8445 { 8446 uint32_t *tl; 8447 int error; 8448 struct nfsrv_descript nfsd; 8449 struct nfsrv_descript *nd = &nfsd; 8450 nfsattrbit_t attrbits; 8451 8452 *attrflagp = 0; 8453 NFSCL_REQSTART(nd, NFSPROC_SETEXTATTR, vp); 8454 if (uiop->uio_resid > nd->nd_maxreq) { 8455 /* nd_maxreq is set by NFSCL_REQSTART(). */ 8456 m_freem(nd->nd_mreq); 8457 return (EINVAL); 8458 } 8459 NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED); 8460 *tl = txdr_unsigned(NFSV4SXATTR_EITHER); 8461 nfsm_strtom(nd, name, strlen(name)); 8462 NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED); 8463 *tl = txdr_unsigned(uiop->uio_resid); 8464 nfsm_uiombuf(nd, uiop, uiop->uio_resid); 8465 NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED); 8466 *tl = txdr_unsigned(NFSV4OP_GETATTR); 8467 NFSGETATTR_ATTRBIT(&attrbits); 8468 nfsrv_putattrbit(nd, &attrbits); 8469 error = nfscl_request(nd, vp, p, cred, NULL); 8470 if (error != 0) 8471 return (error); 8472 if (nd->nd_repstat == 0) { 8473 /* Just skip over the reply and Getattr op status. */ 8474 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_HYPER + 3 * 8475 NFSX_UNSIGNED); 8476 error = nfsm_loadattr(nd, nap); 8477 if (error == 0) 8478 *attrflagp = 1; 8479 } 8480 if (error == 0) 8481 error = nd->nd_repstat; 8482 nfsmout: 8483 m_freem(nd->nd_mrep); 8484 return (error); 8485 } 8486 8487 /* 8488 * The removeextattr RPC. 8489 */ 8490 int 8491 nfsrpc_rmextattr(vnode_t vp, const char *name, struct nfsvattr *nap, 8492 int *attrflagp, struct ucred *cred, NFSPROC_T *p) 8493 { 8494 uint32_t *tl; 8495 int error; 8496 struct nfsrv_descript nfsd; 8497 struct nfsrv_descript *nd = &nfsd; 8498 nfsattrbit_t attrbits; 8499 8500 *attrflagp = 0; 8501 NFSCL_REQSTART(nd, NFSPROC_RMEXTATTR, vp); 8502 nfsm_strtom(nd, name, strlen(name)); 8503 NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED); 8504 *tl = txdr_unsigned(NFSV4OP_GETATTR); 8505 NFSGETATTR_ATTRBIT(&attrbits); 8506 nfsrv_putattrbit(nd, &attrbits); 8507 error = nfscl_request(nd, vp, p, cred, NULL); 8508 if (error != 0) 8509 return (error); 8510 if (nd->nd_repstat == 0) { 8511 /* Just skip over the reply and Getattr op status. */ 8512 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_HYPER + 3 * 8513 NFSX_UNSIGNED); 8514 error = nfsm_loadattr(nd, nap); 8515 if (error == 0) 8516 *attrflagp = 1; 8517 } 8518 if (error == 0) 8519 error = nd->nd_repstat; 8520 nfsmout: 8521 m_freem(nd->nd_mrep); 8522 return (error); 8523 } 8524 8525 /* 8526 * The listextattr RPC. 8527 */ 8528 int 8529 nfsrpc_listextattr(vnode_t vp, uint64_t *cookiep, struct uio *uiop, 8530 size_t *lenp, bool *eofp, struct nfsvattr *nap, int *attrflagp, 8531 struct ucred *cred, NFSPROC_T *p) 8532 { 8533 uint32_t *tl; 8534 int cnt, error, i, len; 8535 struct nfsrv_descript nfsd; 8536 struct nfsrv_descript *nd = &nfsd; 8537 nfsattrbit_t attrbits; 8538 u_char c; 8539 8540 *attrflagp = 0; 8541 NFSCL_REQSTART(nd, NFSPROC_LISTEXTATTR, vp); 8542 NFSM_BUILD(tl, uint32_t *, NFSX_HYPER + 2 * NFSX_UNSIGNED); 8543 txdr_hyper(*cookiep, tl); tl += 2; 8544 *tl++ = txdr_unsigned(*lenp); 8545 *tl = txdr_unsigned(NFSV4OP_GETATTR); 8546 NFSGETATTR_ATTRBIT(&attrbits); 8547 nfsrv_putattrbit(nd, &attrbits); 8548 error = nfscl_request(nd, vp, p, cred, NULL); 8549 if (error != 0) 8550 return (error); 8551 *eofp = true; 8552 *lenp = 0; 8553 if (nd->nd_repstat == 0) { 8554 NFSM_DISSECT(tl, uint32_t *, NFSX_HYPER + NFSX_UNSIGNED); 8555 *cookiep = fxdr_hyper(tl); tl += 2; 8556 cnt = fxdr_unsigned(int, *tl); 8557 if (cnt < 0) { 8558 error = EBADRPC; 8559 goto nfsmout; 8560 } 8561 for (i = 0; i < cnt; i++) { 8562 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 8563 len = fxdr_unsigned(int, *tl); 8564 if (len <= 0 || len > EXTATTR_MAXNAMELEN) { 8565 error = EBADRPC; 8566 goto nfsmout; 8567 } 8568 if (uiop == NULL) 8569 error = nfsm_advance(nd, NFSM_RNDUP(len), -1); 8570 else if (uiop->uio_resid >= len + 1) { 8571 c = len; 8572 error = uiomove(&c, sizeof(c), uiop); 8573 if (error == 0) 8574 error = nfsm_mbufuio(nd, uiop, len); 8575 } else { 8576 error = nfsm_advance(nd, NFSM_RNDUP(len), -1); 8577 *eofp = false; 8578 } 8579 if (error != 0) 8580 goto nfsmout; 8581 *lenp += (len + 1); 8582 } 8583 /* Get the eof and skip over the Getattr op status. */ 8584 NFSM_DISSECT(tl, uint32_t *, 3 * NFSX_UNSIGNED); 8585 /* 8586 * *eofp is set false above, because it wasn't able to copy 8587 * all of the reply. 8588 */ 8589 if (*eofp && *tl == 0) 8590 *eofp = false; 8591 error = nfsm_loadattr(nd, nap); 8592 if (error == 0) 8593 *attrflagp = 1; 8594 } 8595 if (error == 0) 8596 error = nd->nd_repstat; 8597 nfsmout: 8598 m_freem(nd->nd_mrep); 8599 return (error); 8600 } 8601 8602 /* 8603 * Split an mbuf list. For non-M_EXTPG mbufs, just use m_split(). 8604 */ 8605 static struct mbuf * 8606 nfsm_split(struct mbuf *mp, uint64_t xfer) 8607 { 8608 struct mbuf *m, *m2; 8609 vm_page_t pg; 8610 int i, j, left, pgno, plen, trim; 8611 char *cp, *cp2; 8612 8613 if ((mp->m_flags & M_EXTPG) == 0) { 8614 m = m_split(mp, xfer, M_WAITOK); 8615 return (m); 8616 } 8617 8618 /* Find the correct mbuf to split at. */ 8619 for (m = mp; m != NULL && xfer > m->m_len; m = m->m_next) 8620 xfer -= m->m_len; 8621 if (m == NULL) 8622 return (NULL); 8623 8624 /* If xfer == m->m_len, we can just split the mbuf list. */ 8625 if (xfer == m->m_len) { 8626 m2 = m->m_next; 8627 m->m_next = NULL; 8628 return (m2); 8629 } 8630 8631 /* Find the page to split at. */ 8632 pgno = 0; 8633 left = xfer; 8634 do { 8635 if (pgno == 0) 8636 plen = m_epg_pagelen(m, 0, m->m_epg_1st_off); 8637 else 8638 plen = m_epg_pagelen(m, pgno, 0); 8639 if (left <= plen) 8640 break; 8641 left -= plen; 8642 pgno++; 8643 } while (pgno < m->m_epg_npgs); 8644 if (pgno == m->m_epg_npgs) 8645 panic("nfsm_split: eroneous ext_pgs mbuf"); 8646 8647 m2 = mb_alloc_ext_pgs(M_WAITOK, mb_free_mext_pgs); 8648 m2->m_epg_flags |= EPG_FLAG_ANON; 8649 8650 /* 8651 * If left < plen, allocate a new page for the new mbuf 8652 * and copy the data after left in the page to this new 8653 * page. 8654 */ 8655 if (left < plen) { 8656 do { 8657 pg = vm_page_alloc(NULL, 0, VM_ALLOC_NORMAL | 8658 VM_ALLOC_NOOBJ | VM_ALLOC_NODUMP | 8659 VM_ALLOC_WIRED); 8660 if (pg == NULL) 8661 vm_wait(NULL); 8662 } while (pg == NULL); 8663 m2->m_epg_pa[0] = VM_PAGE_TO_PHYS(pg); 8664 m2->m_epg_npgs = 1; 8665 8666 /* Copy the data after left to the new page. */ 8667 trim = plen - left; 8668 cp = (char *)(void *)PHYS_TO_DMAP(m->m_epg_pa[pgno]); 8669 if (pgno == 0) 8670 cp += m->m_epg_1st_off; 8671 cp += left; 8672 cp2 = (char *)(void *)PHYS_TO_DMAP(m2->m_epg_pa[0]); 8673 if (pgno == m->m_epg_npgs - 1) 8674 m2->m_epg_last_len = trim; 8675 else { 8676 cp2 += PAGE_SIZE - trim; 8677 m2->m_epg_1st_off = PAGE_SIZE - trim; 8678 m2->m_epg_last_len = m->m_epg_last_len; 8679 } 8680 memcpy(cp2, cp, trim); 8681 m2->m_len = trim; 8682 } else { 8683 m2->m_len = 0; 8684 m2->m_epg_last_len = m->m_epg_last_len; 8685 } 8686 8687 /* Move the pages beyond pgno to the new mbuf. */ 8688 for (i = pgno + 1, j = m2->m_epg_npgs; i < m->m_epg_npgs; i++, j++) { 8689 m2->m_epg_pa[j] = m->m_epg_pa[i]; 8690 /* Never moves page 0. */ 8691 m2->m_len += m_epg_pagelen(m, i, 0); 8692 } 8693 m2->m_epg_npgs = j; 8694 m->m_epg_npgs = pgno + 1; 8695 m->m_epg_last_len = left; 8696 m->m_len = xfer; 8697 8698 m2->m_next = m->m_next; 8699 m->m_next = NULL; 8700 return (m2); 8701 } 8702