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 struct nfsstatsv1 nfsstatsv1; 69 extern int nfs_numnfscbd; 70 extern struct timeval nfsboottime; 71 extern u_int32_t newnfs_false, newnfs_true; 72 extern nfstype nfsv34_type[9]; 73 extern int nfsrv_useacl; 74 extern char nfsv4_callbackaddr[INET6_ADDRSTRLEN]; 75 extern int nfscl_debuglevel; 76 extern int nfs_pnfsiothreads; 77 extern u_long sb_max_adj; 78 extern int nfs_maxcopyrange; 79 NFSCLSTATEMUTEX; 80 int nfstest_outofseq = 0; 81 int nfscl_assumeposixlocks = 1; 82 int nfscl_enablecallb = 0; 83 short nfsv4_cbport = NFSV4_CBPORT; 84 int nfstest_openallsetattr = 0; 85 86 #define DIRHDSIZ offsetof(struct dirent, d_name) 87 88 /* 89 * nfscl_getsameserver() can return one of three values: 90 * NFSDSP_USETHISSESSION - Use this session for the DS. 91 * NFSDSP_SEQTHISSESSION - Use the nfsclds_sequence field of this dsp for new 92 * session. 93 * NFSDSP_NOTFOUND - No matching server was found. 94 */ 95 enum nfsclds_state { 96 NFSDSP_USETHISSESSION = 0, 97 NFSDSP_SEQTHISSESSION = 1, 98 NFSDSP_NOTFOUND = 2, 99 }; 100 101 /* 102 * Do a write RPC on a DS data file, using this structure for the arguments, 103 * so that this function can be executed by a separate kernel process. 104 */ 105 struct nfsclwritedsdorpc { 106 int done; 107 int inprog; 108 struct task tsk; 109 struct vnode *vp; 110 int iomode; 111 int must_commit; 112 nfsv4stateid_t *stateidp; 113 struct nfsclds *dsp; 114 uint64_t off; 115 int len; 116 #ifdef notyet 117 int advise; 118 #endif 119 struct nfsfh *fhp; 120 struct mbuf *m; 121 int vers; 122 int minorvers; 123 struct ucred *cred; 124 NFSPROC_T *p; 125 int err; 126 }; 127 128 static int nfsrpc_setattrrpc(vnode_t , struct vattr *, nfsv4stateid_t *, 129 struct ucred *, NFSPROC_T *, struct nfsvattr *, int *, void *); 130 static int nfsrpc_readrpc(vnode_t , struct uio *, struct ucred *, 131 nfsv4stateid_t *, NFSPROC_T *, struct nfsvattr *, int *, void *); 132 static int nfsrpc_writerpc(vnode_t , struct uio *, int *, int *, 133 struct ucred *, nfsv4stateid_t *, NFSPROC_T *, struct nfsvattr *, int *, 134 void *); 135 static int nfsrpc_createv23(vnode_t , char *, int, struct vattr *, 136 nfsquad_t, int, struct ucred *, NFSPROC_T *, struct nfsvattr *, 137 struct nfsvattr *, struct nfsfh **, int *, int *, void *); 138 static int nfsrpc_createv4(vnode_t , char *, int, struct vattr *, 139 nfsquad_t, int, struct nfsclowner *, struct nfscldeleg **, struct ucred *, 140 NFSPROC_T *, struct nfsvattr *, struct nfsvattr *, struct nfsfh **, int *, 141 int *, void *, int *); 142 static int nfsrpc_locku(struct nfsrv_descript *, struct nfsmount *, 143 struct nfscllockowner *, u_int64_t, u_int64_t, 144 u_int32_t, struct ucred *, NFSPROC_T *, int); 145 static int nfsrpc_setaclrpc(vnode_t, struct ucred *, NFSPROC_T *, 146 struct acl *, nfsv4stateid_t *, void *); 147 static int nfsrpc_getlayout(struct nfsmount *, vnode_t, struct nfsfh *, int, 148 uint32_t *, nfsv4stateid_t *, uint64_t, struct nfscllayout **, 149 struct ucred *, NFSPROC_T *); 150 static int nfsrpc_fillsa(struct nfsmount *, struct sockaddr_in *, 151 struct sockaddr_in6 *, sa_family_t, int, int, struct nfsclds **, 152 NFSPROC_T *); 153 static void nfscl_initsessionslots(struct nfsclsession *); 154 static int nfscl_doflayoutio(vnode_t, struct uio *, int *, int *, int *, 155 nfsv4stateid_t *, int, struct nfscldevinfo *, struct nfscllayout *, 156 struct nfsclflayout *, uint64_t, uint64_t, int, struct ucred *, 157 NFSPROC_T *); 158 static int nfscl_dofflayoutio(vnode_t, struct uio *, int *, int *, int *, 159 nfsv4stateid_t *, int, struct nfscldevinfo *, struct nfscllayout *, 160 struct nfsclflayout *, uint64_t, uint64_t, int, int, struct mbuf *, 161 struct nfsclwritedsdorpc *, struct ucred *, NFSPROC_T *); 162 static int nfsrpc_readds(vnode_t, struct uio *, nfsv4stateid_t *, int *, 163 struct nfsclds *, uint64_t, int, struct nfsfh *, int, int, int, 164 struct ucred *, NFSPROC_T *); 165 static int nfsrpc_writeds(vnode_t, struct uio *, int *, int *, 166 nfsv4stateid_t *, struct nfsclds *, uint64_t, int, 167 struct nfsfh *, int, int, int, int, struct ucred *, NFSPROC_T *); 168 static int nfsio_writedsmir(vnode_t, int *, int *, nfsv4stateid_t *, 169 struct nfsclds *, uint64_t, int, struct nfsfh *, struct mbuf *, int, int, 170 struct nfsclwritedsdorpc *, struct ucred *, NFSPROC_T *); 171 static int nfsrpc_writedsmir(vnode_t, int *, int *, nfsv4stateid_t *, 172 struct nfsclds *, uint64_t, int, struct nfsfh *, struct mbuf *, int, int, 173 struct ucred *, NFSPROC_T *); 174 static enum nfsclds_state nfscl_getsameserver(struct nfsmount *, 175 struct nfsclds *, struct nfsclds **, uint32_t *); 176 static int nfsio_commitds(vnode_t, uint64_t, int, struct nfsclds *, 177 struct nfsfh *, int, int, struct nfsclwritedsdorpc *, struct ucred *, 178 NFSPROC_T *); 179 static int nfsrpc_commitds(vnode_t, uint64_t, int, struct nfsclds *, 180 struct nfsfh *, int, int, struct ucred *, NFSPROC_T *); 181 #ifdef notyet 182 static int nfsio_adviseds(vnode_t, uint64_t, int, int, struct nfsclds *, 183 struct nfsfh *, int, int, struct nfsclwritedsdorpc *, struct ucred *, 184 NFSPROC_T *); 185 static int nfsrpc_adviseds(vnode_t, uint64_t, int, int, struct nfsclds *, 186 struct nfsfh *, int, int, struct ucred *, NFSPROC_T *); 187 #endif 188 static int nfsrpc_allocaterpc(vnode_t, off_t, off_t, nfsv4stateid_t *, 189 struct nfsvattr *, int *, struct ucred *, NFSPROC_T *, void *); 190 static void nfsrv_setuplayoutget(struct nfsrv_descript *, int, uint64_t, 191 uint64_t, uint64_t, nfsv4stateid_t *, int, int, int); 192 static int nfsrv_parseug(struct nfsrv_descript *, int, uid_t *, gid_t *, 193 NFSPROC_T *); 194 static int nfsrv_parselayoutget(struct nfsmount *, struct nfsrv_descript *, 195 nfsv4stateid_t *, int *, struct nfsclflayouthead *); 196 static int nfsrpc_getopenlayout(struct nfsmount *, vnode_t, u_int8_t *, 197 int, uint8_t *, int, uint32_t, struct nfsclopen *, uint8_t *, int, 198 struct nfscldeleg **, struct ucred *, NFSPROC_T *); 199 static int nfsrpc_getcreatelayout(vnode_t, char *, int, struct vattr *, 200 nfsquad_t, int, struct nfsclowner *, struct nfscldeleg **, 201 struct ucred *, NFSPROC_T *, struct nfsvattr *, struct nfsvattr *, 202 struct nfsfh **, int *, int *, void *, int *); 203 static int nfsrpc_openlayoutrpc(struct nfsmount *, vnode_t, u_int8_t *, 204 int, uint8_t *, int, uint32_t, struct nfsclopen *, uint8_t *, int, 205 struct nfscldeleg **, nfsv4stateid_t *, int, int, int, int *, 206 struct nfsclflayouthead *, int *, struct ucred *, NFSPROC_T *); 207 static int nfsrpc_createlayout(vnode_t, char *, int, struct vattr *, 208 nfsquad_t, int, struct nfsclowner *, struct nfscldeleg **, 209 struct ucred *, NFSPROC_T *, struct nfsvattr *, struct nfsvattr *, 210 struct nfsfh **, int *, int *, void *, int *, nfsv4stateid_t *, 211 int, int, int, int *, struct nfsclflayouthead *, int *); 212 static int nfsrpc_layoutget(struct nfsmount *, uint8_t *, int, int, uint64_t, 213 uint64_t, uint64_t, int, int, nfsv4stateid_t *, int *, 214 struct nfsclflayouthead *, struct ucred *, NFSPROC_T *, void *); 215 static int nfsrpc_layoutgetres(struct nfsmount *, vnode_t, uint8_t *, 216 int, nfsv4stateid_t *, int, uint32_t *, struct nfscllayout **, 217 struct nfsclflayouthead *, int, int, int *, struct ucred *, NFSPROC_T *); 218 static int nfsrpc_copyrpc(vnode_t, off_t, vnode_t, off_t, size_t *, 219 nfsv4stateid_t *, nfsv4stateid_t *, struct nfsvattr *, int *, 220 struct nfsvattr *, int *, bool, int *, struct ucred *, NFSPROC_T *); 221 static int nfsrpc_seekrpc(vnode_t, off_t *, nfsv4stateid_t *, bool *, 222 int, struct nfsvattr *, int *, struct ucred *); 223 static struct mbuf *nfsm_split(struct mbuf *, uint64_t); 224 225 int nfs_pnfsio(task_fn_t *, void *); 226 227 /* 228 * nfs null call from vfs. 229 */ 230 int 231 nfsrpc_null(vnode_t vp, struct ucred *cred, NFSPROC_T *p) 232 { 233 int error; 234 struct nfsrv_descript nfsd, *nd = &nfsd; 235 236 NFSCL_REQSTART(nd, NFSPROC_NULL, vp); 237 error = nfscl_request(nd, vp, p, cred, NULL); 238 if (nd->nd_repstat && !error) 239 error = nd->nd_repstat; 240 m_freem(nd->nd_mrep); 241 return (error); 242 } 243 244 /* 245 * nfs access rpc op. 246 * For nfs version 3 and 4, use the access rpc to check accessibility. If file 247 * modes are changed on the server, accesses might still fail later. 248 */ 249 int 250 nfsrpc_access(vnode_t vp, int acmode, struct ucred *cred, 251 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp) 252 { 253 int error; 254 u_int32_t mode, rmode; 255 256 if (acmode & VREAD) 257 mode = NFSACCESS_READ; 258 else 259 mode = 0; 260 if (vnode_vtype(vp) == VDIR) { 261 if (acmode & VWRITE) 262 mode |= (NFSACCESS_MODIFY | NFSACCESS_EXTEND | 263 NFSACCESS_DELETE); 264 if (acmode & VEXEC) 265 mode |= NFSACCESS_LOOKUP; 266 } else { 267 if (acmode & VWRITE) 268 mode |= (NFSACCESS_MODIFY | NFSACCESS_EXTEND); 269 if (acmode & VEXEC) 270 mode |= NFSACCESS_EXECUTE; 271 } 272 273 /* 274 * Now, just call nfsrpc_accessrpc() to do the actual RPC. 275 */ 276 error = nfsrpc_accessrpc(vp, mode, cred, p, nap, attrflagp, &rmode, 277 NULL); 278 279 /* 280 * The NFS V3 spec does not clarify whether or not 281 * the returned access bits can be a superset of 282 * the ones requested, so... 283 */ 284 if (!error && (rmode & mode) != mode) 285 error = EACCES; 286 return (error); 287 } 288 289 /* 290 * The actual rpc, separated out for Darwin. 291 */ 292 int 293 nfsrpc_accessrpc(vnode_t vp, u_int32_t mode, struct ucred *cred, 294 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, u_int32_t *rmodep, 295 void *stuff) 296 { 297 u_int32_t *tl; 298 u_int32_t supported, rmode; 299 int error; 300 struct nfsrv_descript nfsd, *nd = &nfsd; 301 nfsattrbit_t attrbits; 302 303 *attrflagp = 0; 304 supported = mode; 305 NFSCL_REQSTART(nd, NFSPROC_ACCESS, vp); 306 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 307 *tl = txdr_unsigned(mode); 308 if (nd->nd_flag & ND_NFSV4) { 309 /* 310 * And do a Getattr op. 311 */ 312 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 313 *tl = txdr_unsigned(NFSV4OP_GETATTR); 314 NFSGETATTR_ATTRBIT(&attrbits); 315 (void) nfsrv_putattrbit(nd, &attrbits); 316 } 317 error = nfscl_request(nd, vp, p, cred, stuff); 318 if (error) 319 return (error); 320 if (nd->nd_flag & ND_NFSV3) { 321 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 322 if (error) 323 goto nfsmout; 324 } 325 if (!nd->nd_repstat) { 326 if (nd->nd_flag & ND_NFSV4) { 327 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 328 supported = fxdr_unsigned(u_int32_t, *tl++); 329 } else { 330 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 331 } 332 rmode = fxdr_unsigned(u_int32_t, *tl); 333 if (nd->nd_flag & ND_NFSV4) 334 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 335 336 /* 337 * It's not obvious what should be done about 338 * unsupported access modes. For now, be paranoid 339 * and clear the unsupported ones. 340 */ 341 rmode &= supported; 342 *rmodep = rmode; 343 } else 344 error = nd->nd_repstat; 345 nfsmout: 346 m_freem(nd->nd_mrep); 347 return (error); 348 } 349 350 /* 351 * nfs open rpc 352 */ 353 int 354 nfsrpc_open(vnode_t vp, int amode, struct ucred *cred, NFSPROC_T *p) 355 { 356 struct nfsclopen *op; 357 struct nfscldeleg *dp; 358 struct nfsfh *nfhp; 359 struct nfsnode *np = VTONFS(vp); 360 struct nfsmount *nmp = VFSTONFS(vp->v_mount); 361 u_int32_t mode, clidrev; 362 int ret, newone, error, expireret = 0, retrycnt; 363 364 /* 365 * For NFSv4, Open Ops are only done on Regular Files. 366 */ 367 if (vnode_vtype(vp) != VREG) 368 return (0); 369 mode = 0; 370 if (amode & FREAD) 371 mode |= NFSV4OPEN_ACCESSREAD; 372 if (amode & FWRITE) 373 mode |= NFSV4OPEN_ACCESSWRITE; 374 nfhp = np->n_fhp; 375 376 retrycnt = 0; 377 #ifdef notdef 378 { char name[100]; int namel; 379 namel = (np->n_v4->n4_namelen < 100) ? np->n_v4->n4_namelen : 99; 380 bcopy(NFS4NODENAME(np->n_v4), name, namel); 381 name[namel] = '\0'; 382 printf("rpcopen p=0x%x name=%s",p->p_pid,name); 383 if (nfhp->nfh_len > 0) printf(" fh=0x%x\n",nfhp->nfh_fh[12]); 384 else printf(" fhl=0\n"); 385 } 386 #endif 387 do { 388 dp = NULL; 389 error = nfscl_open(vp, nfhp->nfh_fh, nfhp->nfh_len, mode, 1, 390 cred, p, NULL, &op, &newone, &ret, 1); 391 if (error) { 392 return (error); 393 } 394 if (nmp->nm_clp != NULL) 395 clidrev = nmp->nm_clp->nfsc_clientidrev; 396 else 397 clidrev = 0; 398 if (ret == NFSCLOPEN_DOOPEN) { 399 if (np->n_v4 != NULL) { 400 /* 401 * For the first attempt, try and get a layout, if 402 * pNFS is enabled for the mount. 403 */ 404 if (!NFSHASPNFS(nmp) || nfscl_enablecallb == 0 || 405 nfs_numnfscbd == 0 || 406 (np->n_flag & NNOLAYOUT) != 0 || retrycnt > 0) 407 error = nfsrpc_openrpc(nmp, vp, 408 np->n_v4->n4_data, 409 np->n_v4->n4_fhlen, np->n_fhp->nfh_fh, 410 np->n_fhp->nfh_len, mode, op, 411 NFS4NODENAME(np->n_v4), 412 np->n_v4->n4_namelen, 413 &dp, 0, 0x0, cred, p, 0, 0); 414 else 415 error = nfsrpc_getopenlayout(nmp, vp, 416 np->n_v4->n4_data, 417 np->n_v4->n4_fhlen, np->n_fhp->nfh_fh, 418 np->n_fhp->nfh_len, mode, op, 419 NFS4NODENAME(np->n_v4), 420 np->n_v4->n4_namelen, &dp, cred, p); 421 if (dp != NULL) { 422 #ifdef APPLE 423 OSBitAndAtomic((int32_t)~NDELEGMOD, (UInt32 *)&np->n_flag); 424 #else 425 NFSLOCKNODE(np); 426 np->n_flag &= ~NDELEGMOD; 427 /* 428 * Invalidate the attribute cache, so that 429 * attributes that pre-date the issue of a 430 * delegation are not cached, since the 431 * cached attributes will remain valid while 432 * the delegation is held. 433 */ 434 NFSINVALATTRCACHE(np); 435 NFSUNLOCKNODE(np); 436 #endif 437 (void) nfscl_deleg(nmp->nm_mountp, 438 op->nfso_own->nfsow_clp, 439 nfhp->nfh_fh, nfhp->nfh_len, cred, p, &dp); 440 } 441 } else { 442 error = EIO; 443 } 444 newnfs_copyincred(cred, &op->nfso_cred); 445 } else if (ret == NFSCLOPEN_SETCRED) 446 /* 447 * This is a new local open on a delegation. It needs 448 * to have credentials so that an open can be done 449 * against the server during recovery. 450 */ 451 newnfs_copyincred(cred, &op->nfso_cred); 452 453 /* 454 * nfso_opencnt is the count of how many VOP_OPEN()s have 455 * been done on this Open successfully and a VOP_CLOSE() 456 * is expected for each of these. 457 * If error is non-zero, don't increment it, since the Open 458 * hasn't succeeded yet. 459 */ 460 if (!error) 461 op->nfso_opencnt++; 462 nfscl_openrelease(nmp, op, error, newone); 463 if (error == NFSERR_GRACE || error == NFSERR_STALECLIENTID || 464 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 465 error == NFSERR_BADSESSION) { 466 (void) nfs_catnap(PZERO, error, "nfs_open"); 467 } else if ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) 468 && clidrev != 0) { 469 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p); 470 retrycnt++; 471 } 472 } while (error == NFSERR_GRACE || error == NFSERR_STALECLIENTID || 473 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 474 error == NFSERR_BADSESSION || 475 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) && 476 expireret == 0 && clidrev != 0 && retrycnt < 4)); 477 if (error && retrycnt >= 4) 478 error = EIO; 479 return (error); 480 } 481 482 /* 483 * the actual open rpc 484 */ 485 int 486 nfsrpc_openrpc(struct nfsmount *nmp, vnode_t vp, u_int8_t *nfhp, int fhlen, 487 u_int8_t *newfhp, int newfhlen, u_int32_t mode, struct nfsclopen *op, 488 u_int8_t *name, int namelen, struct nfscldeleg **dpp, 489 int reclaim, u_int32_t delegtype, struct ucred *cred, NFSPROC_T *p, 490 int syscred, int recursed) 491 { 492 u_int32_t *tl; 493 struct nfsrv_descript nfsd, *nd = &nfsd; 494 struct nfscldeleg *dp, *ndp = NULL; 495 struct nfsvattr nfsva; 496 u_int32_t rflags, deleg; 497 nfsattrbit_t attrbits; 498 int error, ret, acesize, limitby; 499 struct nfsclsession *tsep; 500 501 dp = *dpp; 502 *dpp = NULL; 503 nfscl_reqstart(nd, NFSPROC_OPEN, nmp, nfhp, fhlen, NULL, NULL, 0, 0); 504 NFSM_BUILD(tl, u_int32_t *, 5 * NFSX_UNSIGNED); 505 *tl++ = txdr_unsigned(op->nfso_own->nfsow_seqid); 506 *tl++ = txdr_unsigned(mode & NFSV4OPEN_ACCESSBOTH); 507 *tl++ = txdr_unsigned((mode >> NFSLCK_SHIFT) & NFSV4OPEN_DENYBOTH); 508 tsep = nfsmnt_mdssession(nmp); 509 *tl++ = tsep->nfsess_clientid.lval[0]; 510 *tl = tsep->nfsess_clientid.lval[1]; 511 (void) nfsm_strtom(nd, op->nfso_own->nfsow_owner, NFSV4CL_LOCKNAMELEN); 512 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 513 *tl++ = txdr_unsigned(NFSV4OPEN_NOCREATE); 514 if (reclaim) { 515 *tl = txdr_unsigned(NFSV4OPEN_CLAIMPREVIOUS); 516 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 517 *tl = txdr_unsigned(delegtype); 518 } else { 519 if (dp != NULL) { 520 *tl = txdr_unsigned(NFSV4OPEN_CLAIMDELEGATECUR); 521 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID); 522 if (NFSHASNFSV4N(nmp)) 523 *tl++ = 0; 524 else 525 *tl++ = dp->nfsdl_stateid.seqid; 526 *tl++ = dp->nfsdl_stateid.other[0]; 527 *tl++ = dp->nfsdl_stateid.other[1]; 528 *tl = dp->nfsdl_stateid.other[2]; 529 } else { 530 *tl = txdr_unsigned(NFSV4OPEN_CLAIMNULL); 531 } 532 (void) nfsm_strtom(nd, name, namelen); 533 } 534 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 535 *tl = txdr_unsigned(NFSV4OP_GETATTR); 536 NFSZERO_ATTRBIT(&attrbits); 537 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_CHANGE); 538 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_TIMEMODIFY); 539 (void) nfsrv_putattrbit(nd, &attrbits); 540 if (syscred) 541 nd->nd_flag |= ND_USEGSSNAME; 542 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, vp, p, cred, 543 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 544 if (error) 545 return (error); 546 NFSCL_INCRSEQID(op->nfso_own->nfsow_seqid, nd); 547 if (!nd->nd_repstat) { 548 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID + 549 6 * NFSX_UNSIGNED); 550 op->nfso_stateid.seqid = *tl++; 551 op->nfso_stateid.other[0] = *tl++; 552 op->nfso_stateid.other[1] = *tl++; 553 op->nfso_stateid.other[2] = *tl; 554 rflags = fxdr_unsigned(u_int32_t, *(tl + 6)); 555 error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL); 556 if (error) 557 goto nfsmout; 558 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 559 deleg = fxdr_unsigned(u_int32_t, *tl); 560 if (deleg == NFSV4OPEN_DELEGATEREAD || 561 deleg == NFSV4OPEN_DELEGATEWRITE) { 562 if (!(op->nfso_own->nfsow_clp->nfsc_flags & 563 NFSCLFLAGS_FIRSTDELEG)) 564 op->nfso_own->nfsow_clp->nfsc_flags |= 565 (NFSCLFLAGS_FIRSTDELEG | NFSCLFLAGS_GOTDELEG); 566 ndp = malloc( 567 sizeof (struct nfscldeleg) + newfhlen, 568 M_NFSCLDELEG, M_WAITOK); 569 LIST_INIT(&ndp->nfsdl_owner); 570 LIST_INIT(&ndp->nfsdl_lock); 571 ndp->nfsdl_clp = op->nfso_own->nfsow_clp; 572 ndp->nfsdl_fhlen = newfhlen; 573 NFSBCOPY(newfhp, ndp->nfsdl_fh, newfhlen); 574 newnfs_copyincred(cred, &ndp->nfsdl_cred); 575 nfscl_lockinit(&ndp->nfsdl_rwlock); 576 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID + 577 NFSX_UNSIGNED); 578 ndp->nfsdl_stateid.seqid = *tl++; 579 ndp->nfsdl_stateid.other[0] = *tl++; 580 ndp->nfsdl_stateid.other[1] = *tl++; 581 ndp->nfsdl_stateid.other[2] = *tl++; 582 ret = fxdr_unsigned(int, *tl); 583 if (deleg == NFSV4OPEN_DELEGATEWRITE) { 584 ndp->nfsdl_flags = NFSCLDL_WRITE; 585 /* 586 * Indicates how much the file can grow. 587 */ 588 NFSM_DISSECT(tl, u_int32_t *, 589 3 * NFSX_UNSIGNED); 590 limitby = fxdr_unsigned(int, *tl++); 591 switch (limitby) { 592 case NFSV4OPEN_LIMITSIZE: 593 ndp->nfsdl_sizelimit = fxdr_hyper(tl); 594 break; 595 case NFSV4OPEN_LIMITBLOCKS: 596 ndp->nfsdl_sizelimit = 597 fxdr_unsigned(u_int64_t, *tl++); 598 ndp->nfsdl_sizelimit *= 599 fxdr_unsigned(u_int64_t, *tl); 600 break; 601 default: 602 error = NFSERR_BADXDR; 603 goto nfsmout; 604 } 605 } else { 606 ndp->nfsdl_flags = NFSCLDL_READ; 607 } 608 if (ret) 609 ndp->nfsdl_flags |= NFSCLDL_RECALL; 610 error = nfsrv_dissectace(nd, &ndp->nfsdl_ace, &ret, 611 &acesize, p); 612 if (error) 613 goto nfsmout; 614 } else if (deleg != NFSV4OPEN_DELEGATENONE) { 615 error = NFSERR_BADXDR; 616 goto nfsmout; 617 } 618 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 619 error = nfsv4_loadattr(nd, NULL, &nfsva, NULL, 620 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0, 621 NULL, NULL, NULL, p, cred); 622 if (error) 623 goto nfsmout; 624 if (ndp != NULL) { 625 ndp->nfsdl_change = nfsva.na_filerev; 626 ndp->nfsdl_modtime = nfsva.na_mtime; 627 ndp->nfsdl_flags |= NFSCLDL_MODTIMESET; 628 } 629 if (!reclaim && (rflags & NFSV4OPEN_RESULTCONFIRM)) { 630 do { 631 ret = nfsrpc_openconfirm(vp, newfhp, newfhlen, op, 632 cred, p); 633 if (ret == NFSERR_DELAY) 634 (void) nfs_catnap(PZERO, ret, "nfs_open"); 635 } while (ret == NFSERR_DELAY); 636 error = ret; 637 } 638 if ((rflags & NFSV4OPEN_LOCKTYPEPOSIX) || 639 nfscl_assumeposixlocks) 640 op->nfso_posixlock = 1; 641 else 642 op->nfso_posixlock = 0; 643 644 /* 645 * If the server is handing out delegations, but we didn't 646 * get one because an OpenConfirm was required, try the 647 * Open again, to get a delegation. This is a harmless no-op, 648 * from a server's point of view. 649 */ 650 if (!reclaim && (rflags & NFSV4OPEN_RESULTCONFIRM) && 651 (op->nfso_own->nfsow_clp->nfsc_flags & NFSCLFLAGS_GOTDELEG) 652 && !error && dp == NULL && ndp == NULL && !recursed) { 653 do { 654 ret = nfsrpc_openrpc(nmp, vp, nfhp, fhlen, newfhp, 655 newfhlen, mode, op, name, namelen, &ndp, 0, 0x0, 656 cred, p, syscred, 1); 657 if (ret == NFSERR_DELAY) 658 (void) nfs_catnap(PZERO, ret, "nfs_open2"); 659 } while (ret == NFSERR_DELAY); 660 if (ret) { 661 if (ndp != NULL) { 662 free(ndp, M_NFSCLDELEG); 663 ndp = NULL; 664 } 665 if (ret == NFSERR_STALECLIENTID || 666 ret == NFSERR_STALEDONTRECOVER || 667 ret == NFSERR_BADSESSION) 668 error = ret; 669 } 670 } 671 } 672 if (nd->nd_repstat != 0 && error == 0) 673 error = nd->nd_repstat; 674 if (error == NFSERR_STALECLIENTID) 675 nfscl_initiate_recovery(op->nfso_own->nfsow_clp); 676 nfsmout: 677 if (!error) 678 *dpp = ndp; 679 else if (ndp != NULL) 680 free(ndp, M_NFSCLDELEG); 681 m_freem(nd->nd_mrep); 682 return (error); 683 } 684 685 /* 686 * open downgrade rpc 687 */ 688 int 689 nfsrpc_opendowngrade(vnode_t vp, u_int32_t mode, struct nfsclopen *op, 690 struct ucred *cred, NFSPROC_T *p) 691 { 692 u_int32_t *tl; 693 struct nfsrv_descript nfsd, *nd = &nfsd; 694 int error; 695 696 NFSCL_REQSTART(nd, NFSPROC_OPENDOWNGRADE, vp); 697 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID + 3 * NFSX_UNSIGNED); 698 if (NFSHASNFSV4N(VFSTONFS(vp->v_mount))) 699 *tl++ = 0; 700 else 701 *tl++ = op->nfso_stateid.seqid; 702 *tl++ = op->nfso_stateid.other[0]; 703 *tl++ = op->nfso_stateid.other[1]; 704 *tl++ = op->nfso_stateid.other[2]; 705 *tl++ = txdr_unsigned(op->nfso_own->nfsow_seqid); 706 *tl++ = txdr_unsigned(mode & NFSV4OPEN_ACCESSBOTH); 707 *tl = txdr_unsigned((mode >> NFSLCK_SHIFT) & NFSV4OPEN_DENYBOTH); 708 error = nfscl_request(nd, vp, p, cred, NULL); 709 if (error) 710 return (error); 711 NFSCL_INCRSEQID(op->nfso_own->nfsow_seqid, nd); 712 if (!nd->nd_repstat) { 713 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID); 714 op->nfso_stateid.seqid = *tl++; 715 op->nfso_stateid.other[0] = *tl++; 716 op->nfso_stateid.other[1] = *tl++; 717 op->nfso_stateid.other[2] = *tl; 718 } 719 if (nd->nd_repstat && error == 0) 720 error = nd->nd_repstat; 721 if (error == NFSERR_STALESTATEID) 722 nfscl_initiate_recovery(op->nfso_own->nfsow_clp); 723 nfsmout: 724 m_freem(nd->nd_mrep); 725 return (error); 726 } 727 728 /* 729 * V4 Close operation. 730 */ 731 int 732 nfsrpc_close(vnode_t vp, int doclose, NFSPROC_T *p) 733 { 734 struct nfsclclient *clp; 735 int error; 736 737 if (vnode_vtype(vp) != VREG) 738 return (0); 739 if (doclose) 740 error = nfscl_doclose(vp, &clp, p); 741 else 742 error = nfscl_getclose(vp, &clp); 743 if (error) 744 return (error); 745 746 nfscl_clientrelease(clp); 747 return (0); 748 } 749 750 /* 751 * Close the open. 752 */ 753 void 754 nfsrpc_doclose(struct nfsmount *nmp, struct nfsclopen *op, NFSPROC_T *p) 755 { 756 struct nfsrv_descript nfsd, *nd = &nfsd; 757 struct nfscllockowner *lp, *nlp; 758 struct nfscllock *lop, *nlop; 759 struct ucred *tcred; 760 u_int64_t off = 0, len = 0; 761 u_int32_t type = NFSV4LOCKT_READ; 762 int error, do_unlock, trycnt; 763 764 tcred = newnfs_getcred(); 765 newnfs_copycred(&op->nfso_cred, tcred); 766 /* 767 * (Theoretically this could be done in the same 768 * compound as the close, but having multiple 769 * sequenced Ops in the same compound might be 770 * too scary for some servers.) 771 */ 772 if (op->nfso_posixlock) { 773 off = 0; 774 len = NFS64BITSSET; 775 type = NFSV4LOCKT_READ; 776 } 777 778 /* 779 * Since this function is only called from VOP_INACTIVE(), no 780 * other thread will be manipulating this Open. As such, the 781 * lock lists are not being changed by other threads, so it should 782 * be safe to do this without locking. 783 */ 784 LIST_FOREACH(lp, &op->nfso_lock, nfsl_list) { 785 do_unlock = 1; 786 LIST_FOREACH_SAFE(lop, &lp->nfsl_lock, nfslo_list, nlop) { 787 if (op->nfso_posixlock == 0) { 788 off = lop->nfslo_first; 789 len = lop->nfslo_end - lop->nfslo_first; 790 if (lop->nfslo_type == F_WRLCK) 791 type = NFSV4LOCKT_WRITE; 792 else 793 type = NFSV4LOCKT_READ; 794 } 795 if (do_unlock) { 796 trycnt = 0; 797 do { 798 error = nfsrpc_locku(nd, nmp, lp, off, 799 len, type, tcred, p, 0); 800 if ((nd->nd_repstat == NFSERR_GRACE || 801 nd->nd_repstat == NFSERR_DELAY) && 802 error == 0) 803 (void) nfs_catnap(PZERO, 804 (int)nd->nd_repstat, 805 "nfs_close"); 806 } while ((nd->nd_repstat == NFSERR_GRACE || 807 nd->nd_repstat == NFSERR_DELAY) && 808 error == 0 && trycnt++ < 5); 809 if (op->nfso_posixlock) 810 do_unlock = 0; 811 } 812 nfscl_freelock(lop, 0); 813 } 814 /* 815 * Do a ReleaseLockOwner. 816 * The lock owner name nfsl_owner may be used by other opens for 817 * other files but the lock_owner4 name that nfsrpc_rellockown() 818 * puts on the wire has the file handle for this file appended 819 * to it, so it can be done now. 820 */ 821 (void)nfsrpc_rellockown(nmp, lp, lp->nfsl_open->nfso_fh, 822 lp->nfsl_open->nfso_fhlen, tcred, p); 823 } 824 825 /* 826 * There could be other Opens for different files on the same 827 * OpenOwner, so locking is required. 828 */ 829 NFSLOCKCLSTATE(); 830 nfscl_lockexcl(&op->nfso_own->nfsow_rwlock, NFSCLSTATEMUTEXPTR); 831 NFSUNLOCKCLSTATE(); 832 do { 833 error = nfscl_tryclose(op, tcred, nmp, p); 834 if (error == NFSERR_GRACE) 835 (void) nfs_catnap(PZERO, error, "nfs_close"); 836 } while (error == NFSERR_GRACE); 837 NFSLOCKCLSTATE(); 838 nfscl_lockunlock(&op->nfso_own->nfsow_rwlock); 839 840 LIST_FOREACH_SAFE(lp, &op->nfso_lock, nfsl_list, nlp) 841 nfscl_freelockowner(lp, 0); 842 nfscl_freeopen(op, 0); 843 NFSUNLOCKCLSTATE(); 844 NFSFREECRED(tcred); 845 } 846 847 /* 848 * The actual Close RPC. 849 */ 850 int 851 nfsrpc_closerpc(struct nfsrv_descript *nd, struct nfsmount *nmp, 852 struct nfsclopen *op, struct ucred *cred, NFSPROC_T *p, 853 int syscred) 854 { 855 u_int32_t *tl; 856 int error; 857 858 nfscl_reqstart(nd, NFSPROC_CLOSE, nmp, op->nfso_fh, 859 op->nfso_fhlen, NULL, NULL, 0, 0); 860 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED + NFSX_STATEID); 861 *tl++ = txdr_unsigned(op->nfso_own->nfsow_seqid); 862 if (NFSHASNFSV4N(nmp)) 863 *tl++ = 0; 864 else 865 *tl++ = op->nfso_stateid.seqid; 866 *tl++ = op->nfso_stateid.other[0]; 867 *tl++ = op->nfso_stateid.other[1]; 868 *tl = op->nfso_stateid.other[2]; 869 if (syscred) 870 nd->nd_flag |= ND_USEGSSNAME; 871 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 872 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 873 if (error) 874 return (error); 875 NFSCL_INCRSEQID(op->nfso_own->nfsow_seqid, nd); 876 if (nd->nd_repstat == 0) 877 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID); 878 error = nd->nd_repstat; 879 if (error == NFSERR_STALESTATEID) 880 nfscl_initiate_recovery(op->nfso_own->nfsow_clp); 881 nfsmout: 882 m_freem(nd->nd_mrep); 883 return (error); 884 } 885 886 /* 887 * V4 Open Confirm RPC. 888 */ 889 int 890 nfsrpc_openconfirm(vnode_t vp, u_int8_t *nfhp, int fhlen, 891 struct nfsclopen *op, struct ucred *cred, NFSPROC_T *p) 892 { 893 u_int32_t *tl; 894 struct nfsrv_descript nfsd, *nd = &nfsd; 895 struct nfsmount *nmp; 896 int error; 897 898 nmp = VFSTONFS(vp->v_mount); 899 if (NFSHASNFSV4N(nmp)) 900 return (0); /* No confirmation for NFSv4.1. */ 901 nfscl_reqstart(nd, NFSPROC_OPENCONFIRM, nmp, nfhp, fhlen, NULL, NULL, 902 0, 0); 903 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED + NFSX_STATEID); 904 *tl++ = op->nfso_stateid.seqid; 905 *tl++ = op->nfso_stateid.other[0]; 906 *tl++ = op->nfso_stateid.other[1]; 907 *tl++ = op->nfso_stateid.other[2]; 908 *tl = txdr_unsigned(op->nfso_own->nfsow_seqid); 909 error = nfscl_request(nd, vp, p, cred, NULL); 910 if (error) 911 return (error); 912 NFSCL_INCRSEQID(op->nfso_own->nfsow_seqid, nd); 913 if (!nd->nd_repstat) { 914 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID); 915 op->nfso_stateid.seqid = *tl++; 916 op->nfso_stateid.other[0] = *tl++; 917 op->nfso_stateid.other[1] = *tl++; 918 op->nfso_stateid.other[2] = *tl; 919 } 920 error = nd->nd_repstat; 921 if (error == NFSERR_STALESTATEID) 922 nfscl_initiate_recovery(op->nfso_own->nfsow_clp); 923 nfsmout: 924 m_freem(nd->nd_mrep); 925 return (error); 926 } 927 928 /* 929 * Do the setclientid and setclientid confirm RPCs. Called from nfs_statfs() 930 * when a mount has just occurred and when the server replies NFSERR_EXPIRED. 931 */ 932 int 933 nfsrpc_setclient(struct nfsmount *nmp, struct nfsclclient *clp, int reclaim, 934 bool *retokp, struct ucred *cred, NFSPROC_T *p) 935 { 936 u_int32_t *tl; 937 struct nfsrv_descript nfsd; 938 struct nfsrv_descript *nd = &nfsd; 939 nfsattrbit_t attrbits; 940 u_int8_t *cp = NULL, *cp2, addr[INET6_ADDRSTRLEN + 9]; 941 u_short port; 942 int error, isinet6 = 0, callblen; 943 nfsquad_t confirm; 944 u_int32_t lease; 945 static u_int32_t rev = 0; 946 struct nfsclds *dsp, *odsp; 947 struct in6_addr a6; 948 struct nfsclsession *tsep; 949 struct rpc_reconupcall recon; 950 struct nfscl_reconarg *rcp; 951 952 if (nfsboottime.tv_sec == 0) 953 NFSSETBOOTTIME(nfsboottime); 954 if (NFSHASNFSV4N(nmp)) { 955 error = NFSERR_BADSESSION; 956 odsp = dsp = NULL; 957 if (retokp != NULL) { 958 NFSLOCKMNT(nmp); 959 odsp = TAILQ_FIRST(&nmp->nm_sess); 960 NFSUNLOCKMNT(nmp); 961 } 962 if (odsp != NULL) { 963 /* 964 * When a session already exists, first try a 965 * CreateSession with the extant ClientID. 966 */ 967 dsp = malloc(sizeof(struct nfsclds) + 968 odsp->nfsclds_servownlen + 1, M_NFSCLDS, 969 M_WAITOK | M_ZERO); 970 dsp->nfsclds_expire = NFSD_MONOSEC + clp->nfsc_renew; 971 dsp->nfsclds_servownlen = odsp->nfsclds_servownlen; 972 dsp->nfsclds_sess.nfsess_clientid = 973 odsp->nfsclds_sess.nfsess_clientid; 974 dsp->nfsclds_sess.nfsess_sequenceid = 975 odsp->nfsclds_sess.nfsess_sequenceid; 976 dsp->nfsclds_flags = odsp->nfsclds_flags; 977 if (dsp->nfsclds_servownlen > 0) 978 memcpy(dsp->nfsclds_serverown, 979 odsp->nfsclds_serverown, 980 dsp->nfsclds_servownlen + 1); 981 mtx_init(&dsp->nfsclds_mtx, "nfsds", NULL, MTX_DEF); 982 mtx_init(&dsp->nfsclds_sess.nfsess_mtx, "nfssession", 983 NULL, MTX_DEF); 984 nfscl_initsessionslots(&dsp->nfsclds_sess); 985 error = nfsrpc_createsession(nmp, &dsp->nfsclds_sess, 986 &nmp->nm_sockreq, NULL, 987 dsp->nfsclds_sess.nfsess_sequenceid, 1, cred, p); 988 NFSCL_DEBUG(1, "create session for extant " 989 "ClientID=%d\n", error); 990 if (error != 0) { 991 nfscl_freenfsclds(dsp); 992 dsp = NULL; 993 /* 994 * If *retokp is true, return any error other 995 * than NFSERR_STALECLIENTID, 996 * NFSERR_BADSESSION or NFSERR_STALEDONTRECOVER 997 * so that nfscl_recover() will not loop. 998 */ 999 if (*retokp) 1000 return (NFSERR_IO); 1001 } else 1002 *retokp = true; 1003 } else if (retokp != NULL && *retokp) 1004 return (NFSERR_IO); 1005 if (error != 0) { 1006 /* 1007 * Either there was no previous session or the 1008 * CreateSession attempt failed, so... 1009 * do an ExchangeID followed by the CreateSession. 1010 */ 1011 clp->nfsc_rev = rev++; 1012 error = nfsrpc_exchangeid(nmp, clp, &nmp->nm_sockreq, 0, 1013 NFSV4EXCH_USEPNFSMDS | NFSV4EXCH_USENONPNFS, &dsp, 1014 cred, p); 1015 NFSCL_DEBUG(1, "aft exch=%d\n", error); 1016 if (error == 0) 1017 error = nfsrpc_createsession(nmp, 1018 &dsp->nfsclds_sess, &nmp->nm_sockreq, NULL, 1019 dsp->nfsclds_sess.nfsess_sequenceid, 1, 1020 cred, p); 1021 NFSCL_DEBUG(1, "aft createsess=%d\n", error); 1022 } 1023 if (error == 0) { 1024 /* 1025 * If the session supports a backchannel, set up 1026 * the BindConnectionToSession call in the krpc 1027 * so that it is done on a reconnection. 1028 */ 1029 if (nfscl_enablecallb != 0 && nfs_numnfscbd > 0) { 1030 rcp = mem_alloc(sizeof(*rcp)); 1031 rcp->minorvers = nmp->nm_minorvers; 1032 memcpy(rcp->sessionid, 1033 dsp->nfsclds_sess.nfsess_sessionid, 1034 NFSX_V4SESSIONID); 1035 recon.call = nfsrpc_bindconnsess; 1036 recon.arg = rcp; 1037 CLNT_CONTROL(nmp->nm_client, CLSET_RECONUPCALL, 1038 &recon); 1039 } 1040 1041 NFSLOCKMNT(nmp); 1042 /* 1043 * The old sessions cannot be safely free'd 1044 * here, since they may still be used by 1045 * in-progress RPCs. 1046 */ 1047 tsep = NULL; 1048 if (TAILQ_FIRST(&nmp->nm_sess) != NULL) 1049 tsep = NFSMNT_MDSSESSION(nmp); 1050 TAILQ_INSERT_HEAD(&nmp->nm_sess, dsp, 1051 nfsclds_list); 1052 /* 1053 * Wake up RPCs waiting for a slot on the 1054 * old session. These will then fail with 1055 * NFSERR_BADSESSION and be retried with the 1056 * new session by nfsv4_setsequence(). 1057 * Also wakeup() processes waiting for the 1058 * new session. 1059 */ 1060 if (tsep != NULL) 1061 wakeup(&tsep->nfsess_slots); 1062 wakeup(&nmp->nm_sess); 1063 NFSUNLOCKMNT(nmp); 1064 } else if (dsp != NULL) 1065 nfscl_freenfsclds(dsp); 1066 if (error == 0 && reclaim == 0) { 1067 error = nfsrpc_reclaimcomplete(nmp, cred, p); 1068 NFSCL_DEBUG(1, "aft reclaimcomp=%d\n", error); 1069 if (error == NFSERR_COMPLETEALREADY || 1070 error == NFSERR_NOTSUPP) 1071 /* Ignore this error. */ 1072 error = 0; 1073 } 1074 return (error); 1075 } else if (retokp != NULL && *retokp) 1076 return (NFSERR_IO); 1077 clp->nfsc_rev = rev++; 1078 1079 /* 1080 * Allocate a single session structure for NFSv4.0, because some of 1081 * the fields are used by NFSv4.0 although it doesn't do a session. 1082 */ 1083 dsp = malloc(sizeof(struct nfsclds), M_NFSCLDS, M_WAITOK | M_ZERO); 1084 mtx_init(&dsp->nfsclds_mtx, "nfsds", NULL, MTX_DEF); 1085 mtx_init(&dsp->nfsclds_sess.nfsess_mtx, "nfssession", NULL, MTX_DEF); 1086 NFSLOCKMNT(nmp); 1087 TAILQ_INSERT_HEAD(&nmp->nm_sess, dsp, nfsclds_list); 1088 tsep = NFSMNT_MDSSESSION(nmp); 1089 NFSUNLOCKMNT(nmp); 1090 1091 nfscl_reqstart(nd, NFSPROC_SETCLIENTID, nmp, NULL, 0, NULL, NULL, 0, 0); 1092 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1093 *tl++ = txdr_unsigned(nfsboottime.tv_sec); 1094 *tl = txdr_unsigned(clp->nfsc_rev); 1095 (void) nfsm_strtom(nd, clp->nfsc_id, clp->nfsc_idlen); 1096 1097 /* 1098 * set up the callback address 1099 */ 1100 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1101 *tl = txdr_unsigned(NFS_CALLBCKPROG); 1102 callblen = strlen(nfsv4_callbackaddr); 1103 if (callblen == 0) 1104 cp = nfscl_getmyip(nmp, &a6, &isinet6); 1105 if (nfscl_enablecallb && nfs_numnfscbd > 0 && 1106 (callblen > 0 || cp != NULL)) { 1107 port = htons(nfsv4_cbport); 1108 cp2 = (u_int8_t *)&port; 1109 #ifdef INET6 1110 if ((callblen > 0 && 1111 strchr(nfsv4_callbackaddr, ':')) || isinet6) { 1112 char ip6buf[INET6_ADDRSTRLEN], *ip6add; 1113 1114 (void) nfsm_strtom(nd, "tcp6", 4); 1115 if (callblen == 0) { 1116 ip6_sprintf(ip6buf, (struct in6_addr *)cp); 1117 ip6add = ip6buf; 1118 } else { 1119 ip6add = nfsv4_callbackaddr; 1120 } 1121 snprintf(addr, INET6_ADDRSTRLEN + 9, "%s.%d.%d", 1122 ip6add, cp2[0], cp2[1]); 1123 } else 1124 #endif 1125 { 1126 (void) nfsm_strtom(nd, "tcp", 3); 1127 if (callblen == 0) 1128 snprintf(addr, INET6_ADDRSTRLEN + 9, 1129 "%d.%d.%d.%d.%d.%d", cp[0], cp[1], 1130 cp[2], cp[3], cp2[0], cp2[1]); 1131 else 1132 snprintf(addr, INET6_ADDRSTRLEN + 9, 1133 "%s.%d.%d", nfsv4_callbackaddr, 1134 cp2[0], cp2[1]); 1135 } 1136 (void) nfsm_strtom(nd, addr, strlen(addr)); 1137 } else { 1138 (void) nfsm_strtom(nd, "tcp", 3); 1139 (void) nfsm_strtom(nd, "0.0.0.0.0.0", 11); 1140 } 1141 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1142 *tl = txdr_unsigned(clp->nfsc_cbident); 1143 nd->nd_flag |= ND_USEGSSNAME; 1144 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 1145 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 1146 if (error) 1147 return (error); 1148 if (nd->nd_repstat == 0) { 1149 NFSM_DISSECT(tl, u_int32_t *, 4 * NFSX_UNSIGNED); 1150 tsep->nfsess_clientid.lval[0] = *tl++; 1151 tsep->nfsess_clientid.lval[1] = *tl++; 1152 confirm.lval[0] = *tl++; 1153 confirm.lval[1] = *tl; 1154 m_freem(nd->nd_mrep); 1155 nd->nd_mrep = NULL; 1156 1157 /* 1158 * and confirm it. 1159 */ 1160 nfscl_reqstart(nd, NFSPROC_SETCLIENTIDCFRM, nmp, NULL, 0, NULL, 1161 NULL, 0, 0); 1162 NFSM_BUILD(tl, u_int32_t *, 4 * NFSX_UNSIGNED); 1163 *tl++ = tsep->nfsess_clientid.lval[0]; 1164 *tl++ = tsep->nfsess_clientid.lval[1]; 1165 *tl++ = confirm.lval[0]; 1166 *tl = confirm.lval[1]; 1167 nd->nd_flag |= ND_USEGSSNAME; 1168 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, 1169 cred, NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 1170 if (error) 1171 return (error); 1172 m_freem(nd->nd_mrep); 1173 nd->nd_mrep = NULL; 1174 if (nd->nd_repstat == 0) { 1175 nfscl_reqstart(nd, NFSPROC_GETATTR, nmp, nmp->nm_fh, 1176 nmp->nm_fhsize, NULL, NULL, 0, 0); 1177 NFSZERO_ATTRBIT(&attrbits); 1178 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_LEASETIME); 1179 (void) nfsrv_putattrbit(nd, &attrbits); 1180 nd->nd_flag |= ND_USEGSSNAME; 1181 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, 1182 cred, NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 1183 if (error) 1184 return (error); 1185 if (nd->nd_repstat == 0) { 1186 error = nfsv4_loadattr(nd, NULL, NULL, NULL, NULL, 0, NULL, 1187 NULL, NULL, NULL, NULL, 0, NULL, &lease, NULL, p, cred); 1188 if (error) 1189 goto nfsmout; 1190 clp->nfsc_renew = NFSCL_RENEW(lease); 1191 clp->nfsc_expire = NFSD_MONOSEC + clp->nfsc_renew; 1192 clp->nfsc_clientidrev++; 1193 if (clp->nfsc_clientidrev == 0) 1194 clp->nfsc_clientidrev++; 1195 } 1196 } 1197 } 1198 error = nd->nd_repstat; 1199 nfsmout: 1200 m_freem(nd->nd_mrep); 1201 return (error); 1202 } 1203 1204 /* 1205 * nfs getattr call. 1206 */ 1207 int 1208 nfsrpc_getattr(vnode_t vp, struct ucred *cred, NFSPROC_T *p, 1209 struct nfsvattr *nap, void *stuff) 1210 { 1211 struct nfsrv_descript nfsd, *nd = &nfsd; 1212 int error; 1213 nfsattrbit_t attrbits; 1214 1215 NFSCL_REQSTART(nd, NFSPROC_GETATTR, vp); 1216 if (nd->nd_flag & ND_NFSV4) { 1217 NFSGETATTR_ATTRBIT(&attrbits); 1218 (void) nfsrv_putattrbit(nd, &attrbits); 1219 } 1220 error = nfscl_request(nd, vp, p, cred, stuff); 1221 if (error) 1222 return (error); 1223 if (!nd->nd_repstat) 1224 error = nfsm_loadattr(nd, nap); 1225 else 1226 error = nd->nd_repstat; 1227 m_freem(nd->nd_mrep); 1228 return (error); 1229 } 1230 1231 /* 1232 * nfs getattr call with non-vnode arguments. 1233 */ 1234 int 1235 nfsrpc_getattrnovp(struct nfsmount *nmp, u_int8_t *fhp, int fhlen, int syscred, 1236 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, u_int64_t *xidp, 1237 uint32_t *leasep) 1238 { 1239 struct nfsrv_descript nfsd, *nd = &nfsd; 1240 int error, vers = NFS_VER2; 1241 nfsattrbit_t attrbits; 1242 1243 nfscl_reqstart(nd, NFSPROC_GETATTR, nmp, fhp, fhlen, NULL, NULL, 0, 0); 1244 if (nd->nd_flag & ND_NFSV4) { 1245 vers = NFS_VER4; 1246 NFSGETATTR_ATTRBIT(&attrbits); 1247 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_LEASETIME); 1248 (void) nfsrv_putattrbit(nd, &attrbits); 1249 } else if (nd->nd_flag & ND_NFSV3) { 1250 vers = NFS_VER3; 1251 } 1252 if (syscred) 1253 nd->nd_flag |= ND_USEGSSNAME; 1254 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 1255 NFS_PROG, vers, NULL, 1, xidp, NULL); 1256 if (error) 1257 return (error); 1258 if (nd->nd_repstat == 0) { 1259 if ((nd->nd_flag & ND_NFSV4) != 0) 1260 error = nfsv4_loadattr(nd, NULL, nap, NULL, NULL, 0, 1261 NULL, NULL, NULL, NULL, NULL, 0, NULL, leasep, NULL, 1262 NULL, NULL); 1263 else 1264 error = nfsm_loadattr(nd, nap); 1265 } else 1266 error = nd->nd_repstat; 1267 m_freem(nd->nd_mrep); 1268 return (error); 1269 } 1270 1271 /* 1272 * Do an nfs setattr operation. 1273 */ 1274 int 1275 nfsrpc_setattr(vnode_t vp, struct vattr *vap, NFSACL_T *aclp, 1276 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *rnap, int *attrflagp, 1277 void *stuff) 1278 { 1279 int error, expireret = 0, openerr, retrycnt; 1280 u_int32_t clidrev = 0, mode; 1281 struct nfsmount *nmp = VFSTONFS(vp->v_mount); 1282 struct nfsfh *nfhp; 1283 nfsv4stateid_t stateid; 1284 void *lckp; 1285 1286 if (nmp->nm_clp != NULL) 1287 clidrev = nmp->nm_clp->nfsc_clientidrev; 1288 if (vap != NULL && NFSATTRISSET(u_quad_t, vap, va_size)) 1289 mode = NFSV4OPEN_ACCESSWRITE; 1290 else 1291 mode = NFSV4OPEN_ACCESSREAD; 1292 retrycnt = 0; 1293 do { 1294 lckp = NULL; 1295 openerr = 1; 1296 if (NFSHASNFSV4(nmp)) { 1297 nfhp = VTONFS(vp)->n_fhp; 1298 error = nfscl_getstateid(vp, nfhp->nfh_fh, 1299 nfhp->nfh_len, mode, 0, cred, p, &stateid, &lckp); 1300 if (error && vnode_vtype(vp) == VREG && 1301 (mode == NFSV4OPEN_ACCESSWRITE || 1302 nfstest_openallsetattr)) { 1303 /* 1304 * No Open stateid, so try and open the file 1305 * now. 1306 */ 1307 if (mode == NFSV4OPEN_ACCESSWRITE) 1308 openerr = nfsrpc_open(vp, FWRITE, cred, 1309 p); 1310 else 1311 openerr = nfsrpc_open(vp, FREAD, cred, 1312 p); 1313 if (!openerr) 1314 (void) nfscl_getstateid(vp, 1315 nfhp->nfh_fh, nfhp->nfh_len, 1316 mode, 0, cred, p, &stateid, &lckp); 1317 } 1318 } 1319 if (vap != NULL) 1320 error = nfsrpc_setattrrpc(vp, vap, &stateid, cred, p, 1321 rnap, attrflagp, stuff); 1322 else 1323 error = nfsrpc_setaclrpc(vp, cred, p, aclp, &stateid, 1324 stuff); 1325 if (error == NFSERR_OPENMODE && mode == NFSV4OPEN_ACCESSREAD) { 1326 NFSLOCKMNT(nmp); 1327 nmp->nm_state |= NFSSTA_OPENMODE; 1328 NFSUNLOCKMNT(nmp); 1329 } 1330 if (error == NFSERR_STALESTATEID) 1331 nfscl_initiate_recovery(nmp->nm_clp); 1332 if (lckp != NULL) 1333 nfscl_lockderef(lckp); 1334 if (!openerr) 1335 (void) nfsrpc_close(vp, 0, p); 1336 if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 1337 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 1338 error == NFSERR_OLDSTATEID || error == NFSERR_BADSESSION) { 1339 (void) nfs_catnap(PZERO, error, "nfs_setattr"); 1340 } else if ((error == NFSERR_EXPIRED || 1341 error == NFSERR_BADSTATEID) && clidrev != 0) { 1342 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p); 1343 } 1344 retrycnt++; 1345 } while (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 1346 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 1347 error == NFSERR_BADSESSION || 1348 (error == NFSERR_OLDSTATEID && retrycnt < 20) || 1349 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) && 1350 expireret == 0 && clidrev != 0 && retrycnt < 4) || 1351 (error == NFSERR_OPENMODE && mode == NFSV4OPEN_ACCESSREAD && 1352 retrycnt < 4)); 1353 if (error && retrycnt >= 4) 1354 error = EIO; 1355 return (error); 1356 } 1357 1358 static int 1359 nfsrpc_setattrrpc(vnode_t vp, struct vattr *vap, 1360 nfsv4stateid_t *stateidp, struct ucred *cred, NFSPROC_T *p, 1361 struct nfsvattr *rnap, int *attrflagp, void *stuff) 1362 { 1363 u_int32_t *tl; 1364 struct nfsrv_descript nfsd, *nd = &nfsd; 1365 int error; 1366 nfsattrbit_t attrbits; 1367 1368 *attrflagp = 0; 1369 NFSCL_REQSTART(nd, NFSPROC_SETATTR, vp); 1370 if (nd->nd_flag & ND_NFSV4) 1371 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID); 1372 vap->va_type = vnode_vtype(vp); 1373 nfscl_fillsattr(nd, vap, vp, NFSSATTR_FULL, 0); 1374 if (nd->nd_flag & ND_NFSV3) { 1375 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1376 *tl = newnfs_false; 1377 } else if (nd->nd_flag & ND_NFSV4) { 1378 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1379 *tl = txdr_unsigned(NFSV4OP_GETATTR); 1380 NFSGETATTR_ATTRBIT(&attrbits); 1381 (void) nfsrv_putattrbit(nd, &attrbits); 1382 } 1383 error = nfscl_request(nd, vp, p, cred, stuff); 1384 if (error) 1385 return (error); 1386 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) 1387 error = nfscl_wcc_data(nd, vp, rnap, attrflagp, NULL, stuff); 1388 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == ND_NFSV4 && !error) 1389 error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL); 1390 if (!(nd->nd_flag & ND_NFSV3) && !nd->nd_repstat && !error) 1391 error = nfscl_postop_attr(nd, rnap, attrflagp, stuff); 1392 m_freem(nd->nd_mrep); 1393 if (nd->nd_repstat && !error) 1394 error = nd->nd_repstat; 1395 return (error); 1396 } 1397 1398 /* 1399 * nfs lookup rpc 1400 */ 1401 int 1402 nfsrpc_lookup(vnode_t dvp, char *name, int len, struct ucred *cred, 1403 NFSPROC_T *p, struct nfsvattr *dnap, struct nfsvattr *nap, 1404 struct nfsfh **nfhpp, int *attrflagp, int *dattrflagp, void *stuff) 1405 { 1406 u_int32_t *tl; 1407 struct nfsrv_descript nfsd, *nd = &nfsd; 1408 struct nfsmount *nmp; 1409 struct nfsnode *np; 1410 struct nfsfh *nfhp; 1411 nfsattrbit_t attrbits; 1412 int error = 0, lookupp = 0; 1413 1414 *attrflagp = 0; 1415 *dattrflagp = 0; 1416 if (vnode_vtype(dvp) != VDIR) 1417 return (ENOTDIR); 1418 nmp = VFSTONFS(dvp->v_mount); 1419 if (len > NFS_MAXNAMLEN) 1420 return (ENAMETOOLONG); 1421 if (NFSHASNFSV4(nmp) && len == 1 && 1422 name[0] == '.') { 1423 /* 1424 * Just return the current dir's fh. 1425 */ 1426 np = VTONFS(dvp); 1427 nfhp = malloc(sizeof (struct nfsfh) + 1428 np->n_fhp->nfh_len, M_NFSFH, M_WAITOK); 1429 nfhp->nfh_len = np->n_fhp->nfh_len; 1430 NFSBCOPY(np->n_fhp->nfh_fh, nfhp->nfh_fh, nfhp->nfh_len); 1431 *nfhpp = nfhp; 1432 return (0); 1433 } 1434 if (NFSHASNFSV4(nmp) && len == 2 && 1435 name[0] == '.' && name[1] == '.') { 1436 lookupp = 1; 1437 NFSCL_REQSTART(nd, NFSPROC_LOOKUPP, dvp); 1438 } else { 1439 NFSCL_REQSTART(nd, NFSPROC_LOOKUP, dvp); 1440 (void) nfsm_strtom(nd, name, len); 1441 } 1442 if (nd->nd_flag & ND_NFSV4) { 1443 NFSGETATTR_ATTRBIT(&attrbits); 1444 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1445 *tl++ = txdr_unsigned(NFSV4OP_GETFH); 1446 *tl = txdr_unsigned(NFSV4OP_GETATTR); 1447 (void) nfsrv_putattrbit(nd, &attrbits); 1448 } 1449 error = nfscl_request(nd, dvp, p, cred, stuff); 1450 if (error) 1451 return (error); 1452 if (nd->nd_repstat) { 1453 /* 1454 * When an NFSv4 Lookupp returns ENOENT, it means that 1455 * the lookup is at the root of an fs, so return this dir. 1456 */ 1457 if (nd->nd_repstat == NFSERR_NOENT && lookupp) { 1458 np = VTONFS(dvp); 1459 nfhp = malloc(sizeof (struct nfsfh) + 1460 np->n_fhp->nfh_len, M_NFSFH, M_WAITOK); 1461 nfhp->nfh_len = np->n_fhp->nfh_len; 1462 NFSBCOPY(np->n_fhp->nfh_fh, nfhp->nfh_fh, nfhp->nfh_len); 1463 *nfhpp = nfhp; 1464 m_freem(nd->nd_mrep); 1465 return (0); 1466 } 1467 if (nd->nd_flag & ND_NFSV3) 1468 error = nfscl_postop_attr(nd, dnap, dattrflagp, stuff); 1469 else if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == 1470 ND_NFSV4) { 1471 /* Load the directory attributes. */ 1472 error = nfsm_loadattr(nd, dnap); 1473 if (error == 0) 1474 *dattrflagp = 1; 1475 } 1476 goto nfsmout; 1477 } 1478 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == ND_NFSV4) { 1479 /* Load the directory attributes. */ 1480 error = nfsm_loadattr(nd, dnap); 1481 if (error != 0) 1482 goto nfsmout; 1483 *dattrflagp = 1; 1484 /* Skip over the Lookup and GetFH operation status values. */ 1485 NFSM_DISSECT(tl, u_int32_t *, 4 * NFSX_UNSIGNED); 1486 } 1487 error = nfsm_getfh(nd, nfhpp); 1488 if (error) 1489 goto nfsmout; 1490 1491 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 1492 if ((nd->nd_flag & ND_NFSV3) && !error) 1493 error = nfscl_postop_attr(nd, dnap, dattrflagp, stuff); 1494 nfsmout: 1495 m_freem(nd->nd_mrep); 1496 if (!error && nd->nd_repstat) 1497 error = nd->nd_repstat; 1498 return (error); 1499 } 1500 1501 /* 1502 * Do a readlink rpc. 1503 */ 1504 int 1505 nfsrpc_readlink(vnode_t vp, struct uio *uiop, struct ucred *cred, 1506 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff) 1507 { 1508 u_int32_t *tl; 1509 struct nfsrv_descript nfsd, *nd = &nfsd; 1510 struct nfsnode *np = VTONFS(vp); 1511 nfsattrbit_t attrbits; 1512 int error, len, cangetattr = 1; 1513 1514 *attrflagp = 0; 1515 NFSCL_REQSTART(nd, NFSPROC_READLINK, vp); 1516 if (nd->nd_flag & ND_NFSV4) { 1517 /* 1518 * And do a Getattr op. 1519 */ 1520 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1521 *tl = txdr_unsigned(NFSV4OP_GETATTR); 1522 NFSGETATTR_ATTRBIT(&attrbits); 1523 (void) nfsrv_putattrbit(nd, &attrbits); 1524 } 1525 error = nfscl_request(nd, vp, p, cred, stuff); 1526 if (error) 1527 return (error); 1528 if (nd->nd_flag & ND_NFSV3) 1529 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 1530 if (!nd->nd_repstat && !error) { 1531 NFSM_STRSIZ(len, NFS_MAXPATHLEN); 1532 /* 1533 * This seems weird to me, but must have been added to 1534 * FreeBSD for some reason. The only thing I can think of 1535 * is that there was/is some server that replies with 1536 * more link data than it should? 1537 */ 1538 if (len == NFS_MAXPATHLEN) { 1539 NFSLOCKNODE(np); 1540 if (np->n_size > 0 && np->n_size < NFS_MAXPATHLEN) { 1541 len = np->n_size; 1542 cangetattr = 0; 1543 } 1544 NFSUNLOCKNODE(np); 1545 } 1546 error = nfsm_mbufuio(nd, uiop, len); 1547 if ((nd->nd_flag & ND_NFSV4) && !error && cangetattr) 1548 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 1549 } 1550 if (nd->nd_repstat && !error) 1551 error = nd->nd_repstat; 1552 nfsmout: 1553 m_freem(nd->nd_mrep); 1554 return (error); 1555 } 1556 1557 /* 1558 * Read operation. 1559 */ 1560 int 1561 nfsrpc_read(vnode_t vp, struct uio *uiop, struct ucred *cred, 1562 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff) 1563 { 1564 int error, expireret = 0, retrycnt; 1565 u_int32_t clidrev = 0; 1566 struct nfsmount *nmp = VFSTONFS(vp->v_mount); 1567 struct nfsnode *np = VTONFS(vp); 1568 struct ucred *newcred; 1569 struct nfsfh *nfhp = NULL; 1570 nfsv4stateid_t stateid; 1571 void *lckp; 1572 1573 if (nmp->nm_clp != NULL) 1574 clidrev = nmp->nm_clp->nfsc_clientidrev; 1575 newcred = cred; 1576 if (NFSHASNFSV4(nmp)) { 1577 nfhp = np->n_fhp; 1578 newcred = NFSNEWCRED(cred); 1579 } 1580 retrycnt = 0; 1581 do { 1582 lckp = NULL; 1583 if (NFSHASNFSV4(nmp)) 1584 (void)nfscl_getstateid(vp, nfhp->nfh_fh, nfhp->nfh_len, 1585 NFSV4OPEN_ACCESSREAD, 0, newcred, p, &stateid, 1586 &lckp); 1587 error = nfsrpc_readrpc(vp, uiop, newcred, &stateid, p, nap, 1588 attrflagp, stuff); 1589 if (error == NFSERR_OPENMODE) { 1590 NFSLOCKMNT(nmp); 1591 nmp->nm_state |= NFSSTA_OPENMODE; 1592 NFSUNLOCKMNT(nmp); 1593 } 1594 if (error == NFSERR_STALESTATEID) 1595 nfscl_initiate_recovery(nmp->nm_clp); 1596 if (lckp != NULL) 1597 nfscl_lockderef(lckp); 1598 if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 1599 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 1600 error == NFSERR_OLDSTATEID || error == NFSERR_BADSESSION) { 1601 (void) nfs_catnap(PZERO, error, "nfs_read"); 1602 } else if ((error == NFSERR_EXPIRED || 1603 error == NFSERR_BADSTATEID) && clidrev != 0) { 1604 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p); 1605 } 1606 retrycnt++; 1607 } while (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 1608 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 1609 error == NFSERR_BADSESSION || 1610 (error == NFSERR_OLDSTATEID && retrycnt < 20) || 1611 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) && 1612 expireret == 0 && clidrev != 0 && retrycnt < 4) || 1613 (error == NFSERR_OPENMODE && retrycnt < 4)); 1614 if (error && retrycnt >= 4) 1615 error = EIO; 1616 if (NFSHASNFSV4(nmp)) 1617 NFSFREECRED(newcred); 1618 return (error); 1619 } 1620 1621 /* 1622 * The actual read RPC. 1623 */ 1624 static int 1625 nfsrpc_readrpc(vnode_t vp, struct uio *uiop, struct ucred *cred, 1626 nfsv4stateid_t *stateidp, NFSPROC_T *p, struct nfsvattr *nap, 1627 int *attrflagp, void *stuff) 1628 { 1629 u_int32_t *tl; 1630 int error = 0, len, retlen, tsiz, eof = 0; 1631 struct nfsrv_descript nfsd; 1632 struct nfsmount *nmp = VFSTONFS(vp->v_mount); 1633 struct nfsrv_descript *nd = &nfsd; 1634 int rsize; 1635 off_t tmp_off; 1636 1637 *attrflagp = 0; 1638 tsiz = uiop->uio_resid; 1639 tmp_off = uiop->uio_offset + tsiz; 1640 NFSLOCKMNT(nmp); 1641 if (tmp_off > nmp->nm_maxfilesize || tmp_off < uiop->uio_offset) { 1642 NFSUNLOCKMNT(nmp); 1643 return (EFBIG); 1644 } 1645 rsize = nmp->nm_rsize; 1646 NFSUNLOCKMNT(nmp); 1647 nd->nd_mrep = NULL; 1648 while (tsiz > 0) { 1649 *attrflagp = 0; 1650 len = (tsiz > rsize) ? rsize : tsiz; 1651 NFSCL_REQSTART(nd, NFSPROC_READ, vp); 1652 if (nd->nd_flag & ND_NFSV4) 1653 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID); 1654 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED * 3); 1655 if (nd->nd_flag & ND_NFSV2) { 1656 *tl++ = txdr_unsigned(uiop->uio_offset); 1657 *tl++ = txdr_unsigned(len); 1658 *tl = 0; 1659 } else { 1660 txdr_hyper(uiop->uio_offset, tl); 1661 *(tl + 2) = txdr_unsigned(len); 1662 } 1663 /* 1664 * Since I can't do a Getattr for NFSv4 for Write, there 1665 * doesn't seem any point in doing one here, either. 1666 * (See the comment in nfsrpc_writerpc() for more info.) 1667 */ 1668 error = nfscl_request(nd, vp, p, cred, stuff); 1669 if (error) 1670 return (error); 1671 if (nd->nd_flag & ND_NFSV3) { 1672 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 1673 } else if (!nd->nd_repstat && (nd->nd_flag & ND_NFSV2)) { 1674 error = nfsm_loadattr(nd, nap); 1675 if (!error) 1676 *attrflagp = 1; 1677 } 1678 if (nd->nd_repstat || error) { 1679 if (!error) 1680 error = nd->nd_repstat; 1681 goto nfsmout; 1682 } 1683 if (nd->nd_flag & ND_NFSV3) { 1684 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1685 eof = fxdr_unsigned(int, *(tl + 1)); 1686 } else if (nd->nd_flag & ND_NFSV4) { 1687 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 1688 eof = fxdr_unsigned(int, *tl); 1689 } 1690 NFSM_STRSIZ(retlen, len); 1691 error = nfsm_mbufuio(nd, uiop, retlen); 1692 if (error) 1693 goto nfsmout; 1694 m_freem(nd->nd_mrep); 1695 nd->nd_mrep = NULL; 1696 tsiz -= retlen; 1697 if (!(nd->nd_flag & ND_NFSV2)) { 1698 if (eof || retlen == 0) 1699 tsiz = 0; 1700 } else if (retlen < len) 1701 tsiz = 0; 1702 } 1703 return (0); 1704 nfsmout: 1705 if (nd->nd_mrep != NULL) 1706 m_freem(nd->nd_mrep); 1707 return (error); 1708 } 1709 1710 /* 1711 * nfs write operation 1712 * When called_from_strategy != 0, it should return EIO for an error that 1713 * indicates recovery is in progress, so that the buffer will be left 1714 * dirty and be written back to the server later. If it loops around, 1715 * the recovery thread could get stuck waiting for the buffer and recovery 1716 * will then deadlock. 1717 */ 1718 int 1719 nfsrpc_write(vnode_t vp, struct uio *uiop, int *iomode, int *must_commit, 1720 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, 1721 void *stuff, int called_from_strategy) 1722 { 1723 int error, expireret = 0, retrycnt, nostateid; 1724 u_int32_t clidrev = 0; 1725 struct nfsmount *nmp = VFSTONFS(vp->v_mount); 1726 struct nfsnode *np = VTONFS(vp); 1727 struct ucred *newcred; 1728 struct nfsfh *nfhp = NULL; 1729 nfsv4stateid_t stateid; 1730 void *lckp; 1731 1732 *must_commit = 0; 1733 if (nmp->nm_clp != NULL) 1734 clidrev = nmp->nm_clp->nfsc_clientidrev; 1735 newcred = cred; 1736 if (NFSHASNFSV4(nmp)) { 1737 newcred = NFSNEWCRED(cred); 1738 nfhp = np->n_fhp; 1739 } 1740 retrycnt = 0; 1741 do { 1742 lckp = NULL; 1743 nostateid = 0; 1744 if (NFSHASNFSV4(nmp)) { 1745 (void)nfscl_getstateid(vp, nfhp->nfh_fh, nfhp->nfh_len, 1746 NFSV4OPEN_ACCESSWRITE, 0, newcred, p, &stateid, 1747 &lckp); 1748 if (stateid.other[0] == 0 && stateid.other[1] == 0 && 1749 stateid.other[2] == 0) { 1750 nostateid = 1; 1751 NFSCL_DEBUG(1, "stateid0 in write\n"); 1752 } 1753 } 1754 1755 /* 1756 * If there is no stateid for NFSv4, it means this is an 1757 * extraneous write after close. Basically a poorly 1758 * implemented buffer cache. Just don't do the write. 1759 */ 1760 if (nostateid) 1761 error = 0; 1762 else 1763 error = nfsrpc_writerpc(vp, uiop, iomode, must_commit, 1764 newcred, &stateid, p, nap, attrflagp, stuff); 1765 if (error == NFSERR_STALESTATEID) 1766 nfscl_initiate_recovery(nmp->nm_clp); 1767 if (lckp != NULL) 1768 nfscl_lockderef(lckp); 1769 if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 1770 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 1771 error == NFSERR_OLDSTATEID || error == NFSERR_BADSESSION) { 1772 (void) nfs_catnap(PZERO, error, "nfs_write"); 1773 } else if ((error == NFSERR_EXPIRED || 1774 error == NFSERR_BADSTATEID) && clidrev != 0) { 1775 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p); 1776 } 1777 retrycnt++; 1778 } while (error == NFSERR_GRACE || error == NFSERR_DELAY || 1779 ((error == NFSERR_STALESTATEID || error == NFSERR_BADSESSION || 1780 error == NFSERR_STALEDONTRECOVER) && called_from_strategy == 0) || 1781 (error == NFSERR_OLDSTATEID && retrycnt < 20) || 1782 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) && 1783 expireret == 0 && clidrev != 0 && retrycnt < 4)); 1784 if (error != 0 && (retrycnt >= 4 || 1785 ((error == NFSERR_STALESTATEID || error == NFSERR_BADSESSION || 1786 error == NFSERR_STALEDONTRECOVER) && called_from_strategy != 0))) 1787 error = EIO; 1788 if (NFSHASNFSV4(nmp)) 1789 NFSFREECRED(newcred); 1790 return (error); 1791 } 1792 1793 /* 1794 * The actual write RPC. 1795 */ 1796 static int 1797 nfsrpc_writerpc(vnode_t vp, struct uio *uiop, int *iomode, 1798 int *must_commit, struct ucred *cred, nfsv4stateid_t *stateidp, 1799 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff) 1800 { 1801 u_int32_t *tl; 1802 struct nfsmount *nmp = VFSTONFS(vp->v_mount); 1803 struct nfsnode *np = VTONFS(vp); 1804 int error = 0, len, tsiz, rlen, commit, committed = NFSWRITE_FILESYNC; 1805 int wccflag = 0, wsize; 1806 int32_t backup; 1807 struct nfsrv_descript nfsd; 1808 struct nfsrv_descript *nd = &nfsd; 1809 nfsattrbit_t attrbits; 1810 off_t tmp_off; 1811 1812 KASSERT(uiop->uio_iovcnt == 1, ("nfs: writerpc iovcnt > 1")); 1813 *attrflagp = 0; 1814 tsiz = uiop->uio_resid; 1815 tmp_off = uiop->uio_offset + tsiz; 1816 NFSLOCKMNT(nmp); 1817 if (tmp_off > nmp->nm_maxfilesize || tmp_off < uiop->uio_offset) { 1818 NFSUNLOCKMNT(nmp); 1819 return (EFBIG); 1820 } 1821 wsize = nmp->nm_wsize; 1822 NFSUNLOCKMNT(nmp); 1823 nd->nd_mrep = NULL; /* NFSv2 sometimes does a write with */ 1824 nd->nd_repstat = 0; /* uio_resid == 0, so the while is not done */ 1825 while (tsiz > 0) { 1826 *attrflagp = 0; 1827 len = (tsiz > wsize) ? wsize : tsiz; 1828 NFSCL_REQSTART(nd, NFSPROC_WRITE, vp); 1829 if (nd->nd_flag & ND_NFSV4) { 1830 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID); 1831 NFSM_BUILD(tl, u_int32_t *, NFSX_HYPER+2*NFSX_UNSIGNED); 1832 txdr_hyper(uiop->uio_offset, tl); 1833 tl += 2; 1834 *tl++ = txdr_unsigned(*iomode); 1835 *tl = txdr_unsigned(len); 1836 } else if (nd->nd_flag & ND_NFSV3) { 1837 NFSM_BUILD(tl, u_int32_t *, NFSX_HYPER+3*NFSX_UNSIGNED); 1838 txdr_hyper(uiop->uio_offset, tl); 1839 tl += 2; 1840 *tl++ = txdr_unsigned(len); 1841 *tl++ = txdr_unsigned(*iomode); 1842 *tl = txdr_unsigned(len); 1843 } else { 1844 u_int32_t x; 1845 1846 NFSM_BUILD(tl, u_int32_t *, 4 * NFSX_UNSIGNED); 1847 /* 1848 * Not sure why someone changed this, since the 1849 * RFC clearly states that "beginoffset" and 1850 * "totalcount" are ignored, but it wouldn't 1851 * surprise me if there's a busted server out there. 1852 */ 1853 /* Set both "begin" and "current" to non-garbage. */ 1854 x = txdr_unsigned((u_int32_t)uiop->uio_offset); 1855 *tl++ = x; /* "begin offset" */ 1856 *tl++ = x; /* "current offset" */ 1857 x = txdr_unsigned(len); 1858 *tl++ = x; /* total to this offset */ 1859 *tl = x; /* size of this write */ 1860 } 1861 nfsm_uiombuf(nd, uiop, len); 1862 /* 1863 * Although it is tempting to do a normal Getattr Op in the 1864 * NFSv4 compound, the result can be a nearly hung client 1865 * system if the Getattr asks for Owner and/or OwnerGroup. 1866 * It occurs when the client can't map either the Owner or 1867 * Owner_group name in the Getattr reply to a uid/gid. When 1868 * there is a cache miss, the kernel does an upcall to the 1869 * nfsuserd. Then, it can try and read the local /etc/passwd 1870 * or /etc/group file. It can then block in getnewbuf(), 1871 * waiting for dirty writes to be pushed to the NFS server. 1872 * The only reason this doesn't result in a complete 1873 * deadlock, is that the upcall times out and allows 1874 * the write to complete. However, progress is so slow 1875 * that it might just as well be deadlocked. 1876 * As such, we get the rest of the attributes, but not 1877 * Owner or Owner_group. 1878 * nb: nfscl_loadattrcache() needs to be told that these 1879 * partial attributes from a write rpc are being 1880 * passed in, via a argument flag. 1881 */ 1882 if (nd->nd_flag & ND_NFSV4) { 1883 NFSWRITEGETATTR_ATTRBIT(&attrbits); 1884 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 1885 *tl = txdr_unsigned(NFSV4OP_GETATTR); 1886 (void) nfsrv_putattrbit(nd, &attrbits); 1887 } 1888 error = nfscl_request(nd, vp, p, cred, stuff); 1889 if (error) 1890 return (error); 1891 if (nd->nd_repstat) { 1892 /* 1893 * In case the rpc gets retried, roll 1894 * the uio fields changed by nfsm_uiombuf() 1895 * back. 1896 */ 1897 uiop->uio_offset -= len; 1898 uiop->uio_resid += len; 1899 uiop->uio_iov->iov_base = 1900 (char *)uiop->uio_iov->iov_base - len; 1901 uiop->uio_iov->iov_len += len; 1902 } 1903 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) { 1904 error = nfscl_wcc_data(nd, vp, nap, attrflagp, 1905 &wccflag, stuff); 1906 if (error) 1907 goto nfsmout; 1908 } 1909 if (!nd->nd_repstat) { 1910 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) { 1911 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED 1912 + NFSX_VERF); 1913 rlen = fxdr_unsigned(int, *tl++); 1914 if (rlen == 0) { 1915 error = NFSERR_IO; 1916 goto nfsmout; 1917 } else if (rlen < len) { 1918 backup = len - rlen; 1919 uiop->uio_iov->iov_base = 1920 (char *)uiop->uio_iov->iov_base - 1921 backup; 1922 uiop->uio_iov->iov_len += backup; 1923 uiop->uio_offset -= backup; 1924 uiop->uio_resid += backup; 1925 len = rlen; 1926 } 1927 commit = fxdr_unsigned(int, *tl++); 1928 1929 /* 1930 * Return the lowest commitment level 1931 * obtained by any of the RPCs. 1932 */ 1933 if (committed == NFSWRITE_FILESYNC) 1934 committed = commit; 1935 else if (committed == NFSWRITE_DATASYNC && 1936 commit == NFSWRITE_UNSTABLE) 1937 committed = commit; 1938 NFSLOCKMNT(nmp); 1939 if (!NFSHASWRITEVERF(nmp)) { 1940 NFSBCOPY((caddr_t)tl, 1941 (caddr_t)&nmp->nm_verf[0], 1942 NFSX_VERF); 1943 NFSSETWRITEVERF(nmp); 1944 } else if (NFSBCMP(tl, nmp->nm_verf, 1945 NFSX_VERF)) { 1946 *must_commit = 1; 1947 NFSBCOPY(tl, nmp->nm_verf, NFSX_VERF); 1948 } 1949 NFSUNLOCKMNT(nmp); 1950 } 1951 if (nd->nd_flag & ND_NFSV4) 1952 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 1953 if (nd->nd_flag & (ND_NFSV2 | ND_NFSV4)) { 1954 error = nfsm_loadattr(nd, nap); 1955 if (!error) 1956 *attrflagp = NFS_LATTR_NOSHRINK; 1957 } 1958 } else { 1959 error = nd->nd_repstat; 1960 } 1961 if (error) 1962 goto nfsmout; 1963 NFSWRITERPC_SETTIME(wccflag, np, nap, (nd->nd_flag & ND_NFSV4)); 1964 m_freem(nd->nd_mrep); 1965 nd->nd_mrep = NULL; 1966 tsiz -= len; 1967 } 1968 nfsmout: 1969 if (nd->nd_mrep != NULL) 1970 m_freem(nd->nd_mrep); 1971 *iomode = committed; 1972 if (nd->nd_repstat && !error) 1973 error = nd->nd_repstat; 1974 return (error); 1975 } 1976 1977 /* 1978 * nfs mknod rpc 1979 * For NFS v2 this is a kludge. Use a create rpc but with the IFMT bits of the 1980 * mode set to specify the file type and the size field for rdev. 1981 */ 1982 int 1983 nfsrpc_mknod(vnode_t dvp, char *name, int namelen, struct vattr *vap, 1984 u_int32_t rdev, enum vtype vtyp, struct ucred *cred, NFSPROC_T *p, 1985 struct nfsvattr *dnap, struct nfsvattr *nnap, struct nfsfh **nfhpp, 1986 int *attrflagp, int *dattrflagp, void *dstuff) 1987 { 1988 u_int32_t *tl; 1989 int error = 0; 1990 struct nfsrv_descript nfsd, *nd = &nfsd; 1991 nfsattrbit_t attrbits; 1992 1993 *nfhpp = NULL; 1994 *attrflagp = 0; 1995 *dattrflagp = 0; 1996 if (namelen > NFS_MAXNAMLEN) 1997 return (ENAMETOOLONG); 1998 NFSCL_REQSTART(nd, NFSPROC_MKNOD, dvp); 1999 if (nd->nd_flag & ND_NFSV4) { 2000 if (vtyp == VBLK || vtyp == VCHR) { 2001 NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 2002 *tl++ = vtonfsv34_type(vtyp); 2003 *tl++ = txdr_unsigned(NFSMAJOR(rdev)); 2004 *tl = txdr_unsigned(NFSMINOR(rdev)); 2005 } else { 2006 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2007 *tl = vtonfsv34_type(vtyp); 2008 } 2009 } 2010 (void) nfsm_strtom(nd, name, namelen); 2011 if (nd->nd_flag & ND_NFSV3) { 2012 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2013 *tl = vtonfsv34_type(vtyp); 2014 } 2015 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) 2016 nfscl_fillsattr(nd, vap, dvp, 0, 0); 2017 if ((nd->nd_flag & ND_NFSV3) && 2018 (vtyp == VCHR || vtyp == VBLK)) { 2019 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2020 *tl++ = txdr_unsigned(NFSMAJOR(rdev)); 2021 *tl = txdr_unsigned(NFSMINOR(rdev)); 2022 } 2023 if (nd->nd_flag & ND_NFSV4) { 2024 NFSGETATTR_ATTRBIT(&attrbits); 2025 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2026 *tl++ = txdr_unsigned(NFSV4OP_GETFH); 2027 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2028 (void) nfsrv_putattrbit(nd, &attrbits); 2029 } 2030 if (nd->nd_flag & ND_NFSV2) 2031 nfscl_fillsattr(nd, vap, dvp, NFSSATTR_SIZERDEV, rdev); 2032 error = nfscl_request(nd, dvp, p, cred, dstuff); 2033 if (error) 2034 return (error); 2035 if (nd->nd_flag & ND_NFSV4) 2036 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 2037 if (!nd->nd_repstat) { 2038 if (nd->nd_flag & ND_NFSV4) { 2039 NFSM_DISSECT(tl, u_int32_t *, 5 * NFSX_UNSIGNED); 2040 error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL); 2041 if (error) 2042 goto nfsmout; 2043 } 2044 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp); 2045 if (error) 2046 goto nfsmout; 2047 } 2048 if (nd->nd_flag & ND_NFSV3) 2049 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 2050 if (!error && nd->nd_repstat) 2051 error = nd->nd_repstat; 2052 nfsmout: 2053 m_freem(nd->nd_mrep); 2054 return (error); 2055 } 2056 2057 /* 2058 * nfs file create call 2059 * Mostly just call the approriate routine. (I separated out v4, so that 2060 * error recovery wouldn't be as difficult.) 2061 */ 2062 int 2063 nfsrpc_create(vnode_t dvp, char *name, int namelen, struct vattr *vap, 2064 nfsquad_t cverf, int fmode, struct ucred *cred, NFSPROC_T *p, 2065 struct nfsvattr *dnap, struct nfsvattr *nnap, struct nfsfh **nfhpp, 2066 int *attrflagp, int *dattrflagp, void *dstuff) 2067 { 2068 int error = 0, newone, expireret = 0, retrycnt, unlocked; 2069 struct nfsclowner *owp; 2070 struct nfscldeleg *dp; 2071 struct nfsmount *nmp = VFSTONFS(dvp->v_mount); 2072 u_int32_t clidrev; 2073 2074 if (NFSHASNFSV4(nmp)) { 2075 retrycnt = 0; 2076 do { 2077 dp = NULL; 2078 error = nfscl_open(dvp, NULL, 0, (NFSV4OPEN_ACCESSWRITE | 2079 NFSV4OPEN_ACCESSREAD), 0, cred, p, &owp, NULL, &newone, 2080 NULL, 1); 2081 if (error) 2082 return (error); 2083 if (nmp->nm_clp != NULL) 2084 clidrev = nmp->nm_clp->nfsc_clientidrev; 2085 else 2086 clidrev = 0; 2087 if (!NFSHASPNFS(nmp) || nfscl_enablecallb == 0 || 2088 nfs_numnfscbd == 0 || retrycnt > 0) 2089 error = nfsrpc_createv4(dvp, name, namelen, vap, cverf, 2090 fmode, owp, &dp, cred, p, dnap, nnap, nfhpp, 2091 attrflagp, dattrflagp, dstuff, &unlocked); 2092 else 2093 error = nfsrpc_getcreatelayout(dvp, name, namelen, vap, 2094 cverf, fmode, owp, &dp, cred, p, dnap, nnap, nfhpp, 2095 attrflagp, dattrflagp, dstuff, &unlocked); 2096 /* 2097 * There is no need to invalidate cached attributes here, 2098 * since new post-delegation issue attributes are always 2099 * returned by nfsrpc_createv4() and these will update the 2100 * attribute cache. 2101 */ 2102 if (dp != NULL) 2103 (void) nfscl_deleg(nmp->nm_mountp, owp->nfsow_clp, 2104 (*nfhpp)->nfh_fh, (*nfhpp)->nfh_len, cred, p, &dp); 2105 nfscl_ownerrelease(nmp, owp, error, newone, unlocked); 2106 if (error == NFSERR_GRACE || error == NFSERR_STALECLIENTID || 2107 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 2108 error == NFSERR_BADSESSION) { 2109 (void) nfs_catnap(PZERO, error, "nfs_open"); 2110 } else if ((error == NFSERR_EXPIRED || 2111 error == NFSERR_BADSTATEID) && clidrev != 0) { 2112 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p); 2113 retrycnt++; 2114 } 2115 } while (error == NFSERR_GRACE || error == NFSERR_STALECLIENTID || 2116 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 2117 error == NFSERR_BADSESSION || 2118 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) && 2119 expireret == 0 && clidrev != 0 && retrycnt < 4)); 2120 if (error && retrycnt >= 4) 2121 error = EIO; 2122 } else { 2123 error = nfsrpc_createv23(dvp, name, namelen, vap, cverf, 2124 fmode, cred, p, dnap, nnap, nfhpp, attrflagp, dattrflagp, 2125 dstuff); 2126 } 2127 return (error); 2128 } 2129 2130 /* 2131 * The create rpc for v2 and 3. 2132 */ 2133 static int 2134 nfsrpc_createv23(vnode_t dvp, char *name, int namelen, struct vattr *vap, 2135 nfsquad_t cverf, int fmode, struct ucred *cred, NFSPROC_T *p, 2136 struct nfsvattr *dnap, struct nfsvattr *nnap, struct nfsfh **nfhpp, 2137 int *attrflagp, int *dattrflagp, void *dstuff) 2138 { 2139 u_int32_t *tl; 2140 int error = 0; 2141 struct nfsrv_descript nfsd, *nd = &nfsd; 2142 2143 *nfhpp = NULL; 2144 *attrflagp = 0; 2145 *dattrflagp = 0; 2146 if (namelen > NFS_MAXNAMLEN) 2147 return (ENAMETOOLONG); 2148 NFSCL_REQSTART(nd, NFSPROC_CREATE, dvp); 2149 (void) nfsm_strtom(nd, name, namelen); 2150 if (nd->nd_flag & ND_NFSV3) { 2151 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2152 if (fmode & O_EXCL) { 2153 *tl = txdr_unsigned(NFSCREATE_EXCLUSIVE); 2154 NFSM_BUILD(tl, u_int32_t *, NFSX_VERF); 2155 *tl++ = cverf.lval[0]; 2156 *tl = cverf.lval[1]; 2157 } else { 2158 *tl = txdr_unsigned(NFSCREATE_UNCHECKED); 2159 nfscl_fillsattr(nd, vap, dvp, 0, 0); 2160 } 2161 } else { 2162 nfscl_fillsattr(nd, vap, dvp, NFSSATTR_SIZE0, 0); 2163 } 2164 error = nfscl_request(nd, dvp, p, cred, dstuff); 2165 if (error) 2166 return (error); 2167 if (nd->nd_repstat == 0) { 2168 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp); 2169 if (error) 2170 goto nfsmout; 2171 } 2172 if (nd->nd_flag & ND_NFSV3) 2173 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 2174 if (nd->nd_repstat != 0 && error == 0) 2175 error = nd->nd_repstat; 2176 nfsmout: 2177 m_freem(nd->nd_mrep); 2178 return (error); 2179 } 2180 2181 static int 2182 nfsrpc_createv4(vnode_t dvp, char *name, int namelen, struct vattr *vap, 2183 nfsquad_t cverf, int fmode, struct nfsclowner *owp, struct nfscldeleg **dpp, 2184 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap, 2185 struct nfsvattr *nnap, struct nfsfh **nfhpp, int *attrflagp, 2186 int *dattrflagp, void *dstuff, int *unlockedp) 2187 { 2188 u_int32_t *tl; 2189 int error = 0, deleg, newone, ret, acesize, limitby; 2190 struct nfsrv_descript nfsd, *nd = &nfsd; 2191 struct nfsclopen *op; 2192 struct nfscldeleg *dp = NULL; 2193 struct nfsnode *np; 2194 struct nfsfh *nfhp; 2195 nfsattrbit_t attrbits; 2196 nfsv4stateid_t stateid; 2197 u_int32_t rflags; 2198 struct nfsmount *nmp; 2199 struct nfsclsession *tsep; 2200 2201 nmp = VFSTONFS(dvp->v_mount); 2202 np = VTONFS(dvp); 2203 *unlockedp = 0; 2204 *nfhpp = NULL; 2205 *dpp = NULL; 2206 *attrflagp = 0; 2207 *dattrflagp = 0; 2208 if (namelen > NFS_MAXNAMLEN) 2209 return (ENAMETOOLONG); 2210 NFSCL_REQSTART(nd, NFSPROC_CREATE, dvp); 2211 /* 2212 * For V4, this is actually an Open op. 2213 */ 2214 NFSM_BUILD(tl, u_int32_t *, 5 * NFSX_UNSIGNED); 2215 *tl++ = txdr_unsigned(owp->nfsow_seqid); 2216 *tl++ = txdr_unsigned(NFSV4OPEN_ACCESSWRITE | 2217 NFSV4OPEN_ACCESSREAD); 2218 *tl++ = txdr_unsigned(NFSV4OPEN_DENYNONE); 2219 tsep = nfsmnt_mdssession(nmp); 2220 *tl++ = tsep->nfsess_clientid.lval[0]; 2221 *tl = tsep->nfsess_clientid.lval[1]; 2222 (void) nfsm_strtom(nd, owp->nfsow_owner, NFSV4CL_LOCKNAMELEN); 2223 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2224 *tl++ = txdr_unsigned(NFSV4OPEN_CREATE); 2225 if (fmode & O_EXCL) { 2226 if (NFSHASNFSV4N(nmp)) { 2227 if (NFSHASSESSPERSIST(nmp)) { 2228 /* Use GUARDED for persistent sessions. */ 2229 *tl = txdr_unsigned(NFSCREATE_GUARDED); 2230 nfscl_fillsattr(nd, vap, dvp, 0, 0); 2231 } else { 2232 /* Otherwise, use EXCLUSIVE4_1. */ 2233 *tl = txdr_unsigned(NFSCREATE_EXCLUSIVE41); 2234 NFSM_BUILD(tl, u_int32_t *, NFSX_VERF); 2235 *tl++ = cverf.lval[0]; 2236 *tl = cverf.lval[1]; 2237 nfscl_fillsattr(nd, vap, dvp, 0, 0); 2238 } 2239 } else { 2240 /* NFSv4.0 */ 2241 *tl = txdr_unsigned(NFSCREATE_EXCLUSIVE); 2242 NFSM_BUILD(tl, u_int32_t *, NFSX_VERF); 2243 *tl++ = cverf.lval[0]; 2244 *tl = cverf.lval[1]; 2245 } 2246 } else { 2247 *tl = txdr_unsigned(NFSCREATE_UNCHECKED); 2248 nfscl_fillsattr(nd, vap, dvp, 0, 0); 2249 } 2250 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2251 *tl = txdr_unsigned(NFSV4OPEN_CLAIMNULL); 2252 (void) nfsm_strtom(nd, name, namelen); 2253 /* Get the new file's handle and attributes. */ 2254 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2255 *tl++ = txdr_unsigned(NFSV4OP_GETFH); 2256 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2257 NFSGETATTR_ATTRBIT(&attrbits); 2258 (void) nfsrv_putattrbit(nd, &attrbits); 2259 /* Get the directory's post-op attributes. */ 2260 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2261 *tl = txdr_unsigned(NFSV4OP_PUTFH); 2262 (void) nfsm_fhtom(nd, np->n_fhp->nfh_fh, np->n_fhp->nfh_len, 0); 2263 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2264 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2265 (void) nfsrv_putattrbit(nd, &attrbits); 2266 error = nfscl_request(nd, dvp, p, cred, dstuff); 2267 if (error) 2268 return (error); 2269 NFSCL_INCRSEQID(owp->nfsow_seqid, nd); 2270 if (nd->nd_repstat == 0) { 2271 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID + 2272 6 * NFSX_UNSIGNED); 2273 stateid.seqid = *tl++; 2274 stateid.other[0] = *tl++; 2275 stateid.other[1] = *tl++; 2276 stateid.other[2] = *tl; 2277 rflags = fxdr_unsigned(u_int32_t, *(tl + 6)); 2278 (void) nfsrv_getattrbits(nd, &attrbits, NULL, NULL); 2279 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 2280 deleg = fxdr_unsigned(int, *tl); 2281 if (deleg == NFSV4OPEN_DELEGATEREAD || 2282 deleg == NFSV4OPEN_DELEGATEWRITE) { 2283 if (!(owp->nfsow_clp->nfsc_flags & 2284 NFSCLFLAGS_FIRSTDELEG)) 2285 owp->nfsow_clp->nfsc_flags |= 2286 (NFSCLFLAGS_FIRSTDELEG | NFSCLFLAGS_GOTDELEG); 2287 dp = malloc( 2288 sizeof (struct nfscldeleg) + NFSX_V4FHMAX, 2289 M_NFSCLDELEG, M_WAITOK); 2290 LIST_INIT(&dp->nfsdl_owner); 2291 LIST_INIT(&dp->nfsdl_lock); 2292 dp->nfsdl_clp = owp->nfsow_clp; 2293 newnfs_copyincred(cred, &dp->nfsdl_cred); 2294 nfscl_lockinit(&dp->nfsdl_rwlock); 2295 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID + 2296 NFSX_UNSIGNED); 2297 dp->nfsdl_stateid.seqid = *tl++; 2298 dp->nfsdl_stateid.other[0] = *tl++; 2299 dp->nfsdl_stateid.other[1] = *tl++; 2300 dp->nfsdl_stateid.other[2] = *tl++; 2301 ret = fxdr_unsigned(int, *tl); 2302 if (deleg == NFSV4OPEN_DELEGATEWRITE) { 2303 dp->nfsdl_flags = NFSCLDL_WRITE; 2304 /* 2305 * Indicates how much the file can grow. 2306 */ 2307 NFSM_DISSECT(tl, u_int32_t *, 2308 3 * NFSX_UNSIGNED); 2309 limitby = fxdr_unsigned(int, *tl++); 2310 switch (limitby) { 2311 case NFSV4OPEN_LIMITSIZE: 2312 dp->nfsdl_sizelimit = fxdr_hyper(tl); 2313 break; 2314 case NFSV4OPEN_LIMITBLOCKS: 2315 dp->nfsdl_sizelimit = 2316 fxdr_unsigned(u_int64_t, *tl++); 2317 dp->nfsdl_sizelimit *= 2318 fxdr_unsigned(u_int64_t, *tl); 2319 break; 2320 default: 2321 error = NFSERR_BADXDR; 2322 goto nfsmout; 2323 } 2324 } else { 2325 dp->nfsdl_flags = NFSCLDL_READ; 2326 } 2327 if (ret) 2328 dp->nfsdl_flags |= NFSCLDL_RECALL; 2329 error = nfsrv_dissectace(nd, &dp->nfsdl_ace, &ret, 2330 &acesize, p); 2331 if (error) 2332 goto nfsmout; 2333 } else if (deleg != NFSV4OPEN_DELEGATENONE) { 2334 error = NFSERR_BADXDR; 2335 goto nfsmout; 2336 } 2337 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp); 2338 if (error) 2339 goto nfsmout; 2340 /* Get rid of the PutFH and Getattr status values. */ 2341 NFSM_DISSECT(tl, u_int32_t *, 4 * NFSX_UNSIGNED); 2342 /* Load the directory attributes. */ 2343 error = nfsm_loadattr(nd, dnap); 2344 if (error) 2345 goto nfsmout; 2346 *dattrflagp = 1; 2347 if (dp != NULL && *attrflagp) { 2348 dp->nfsdl_change = nnap->na_filerev; 2349 dp->nfsdl_modtime = nnap->na_mtime; 2350 dp->nfsdl_flags |= NFSCLDL_MODTIMESET; 2351 } 2352 /* 2353 * We can now complete the Open state. 2354 */ 2355 nfhp = *nfhpp; 2356 if (dp != NULL) { 2357 dp->nfsdl_fhlen = nfhp->nfh_len; 2358 NFSBCOPY(nfhp->nfh_fh, dp->nfsdl_fh, nfhp->nfh_len); 2359 } 2360 /* 2361 * Get an Open structure that will be 2362 * attached to the OpenOwner, acquired already. 2363 */ 2364 error = nfscl_open(dvp, nfhp->nfh_fh, nfhp->nfh_len, 2365 (NFSV4OPEN_ACCESSWRITE | NFSV4OPEN_ACCESSREAD), 0, 2366 cred, p, NULL, &op, &newone, NULL, 0); 2367 if (error) 2368 goto nfsmout; 2369 op->nfso_stateid = stateid; 2370 newnfs_copyincred(cred, &op->nfso_cred); 2371 if ((rflags & NFSV4OPEN_RESULTCONFIRM)) { 2372 do { 2373 ret = nfsrpc_openconfirm(dvp, nfhp->nfh_fh, 2374 nfhp->nfh_len, op, cred, p); 2375 if (ret == NFSERR_DELAY) 2376 (void) nfs_catnap(PZERO, ret, "nfs_create"); 2377 } while (ret == NFSERR_DELAY); 2378 error = ret; 2379 } 2380 2381 /* 2382 * If the server is handing out delegations, but we didn't 2383 * get one because an OpenConfirm was required, try the 2384 * Open again, to get a delegation. This is a harmless no-op, 2385 * from a server's point of view. 2386 */ 2387 if ((rflags & NFSV4OPEN_RESULTCONFIRM) && 2388 (owp->nfsow_clp->nfsc_flags & NFSCLFLAGS_GOTDELEG) && 2389 !error && dp == NULL) { 2390 do { 2391 ret = nfsrpc_openrpc(VFSTONFS(dvp->v_mount), dvp, 2392 np->n_fhp->nfh_fh, np->n_fhp->nfh_len, 2393 nfhp->nfh_fh, nfhp->nfh_len, 2394 (NFSV4OPEN_ACCESSWRITE | NFSV4OPEN_ACCESSREAD), op, 2395 name, namelen, &dp, 0, 0x0, cred, p, 0, 1); 2396 if (ret == NFSERR_DELAY) 2397 (void) nfs_catnap(PZERO, ret, "nfs_crt2"); 2398 } while (ret == NFSERR_DELAY); 2399 if (ret) { 2400 if (dp != NULL) { 2401 free(dp, M_NFSCLDELEG); 2402 dp = NULL; 2403 } 2404 if (ret == NFSERR_STALECLIENTID || 2405 ret == NFSERR_STALEDONTRECOVER || 2406 ret == NFSERR_BADSESSION) 2407 error = ret; 2408 } 2409 } 2410 nfscl_openrelease(nmp, op, error, newone); 2411 *unlockedp = 1; 2412 } 2413 if (nd->nd_repstat != 0 && error == 0) 2414 error = nd->nd_repstat; 2415 if (error == NFSERR_STALECLIENTID) 2416 nfscl_initiate_recovery(owp->nfsow_clp); 2417 nfsmout: 2418 if (!error) 2419 *dpp = dp; 2420 else if (dp != NULL) 2421 free(dp, M_NFSCLDELEG); 2422 m_freem(nd->nd_mrep); 2423 return (error); 2424 } 2425 2426 /* 2427 * Nfs remove rpc 2428 */ 2429 int 2430 nfsrpc_remove(vnode_t dvp, char *name, int namelen, vnode_t vp, 2431 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap, int *dattrflagp, 2432 void *dstuff) 2433 { 2434 u_int32_t *tl; 2435 struct nfsrv_descript nfsd, *nd = &nfsd; 2436 struct nfsnode *np; 2437 struct nfsmount *nmp; 2438 nfsv4stateid_t dstateid; 2439 int error, ret = 0, i; 2440 2441 *dattrflagp = 0; 2442 if (namelen > NFS_MAXNAMLEN) 2443 return (ENAMETOOLONG); 2444 nmp = VFSTONFS(dvp->v_mount); 2445 tryagain: 2446 if (NFSHASNFSV4(nmp) && ret == 0) { 2447 ret = nfscl_removedeleg(vp, p, &dstateid); 2448 if (ret == 1) { 2449 NFSCL_REQSTART(nd, NFSPROC_RETDELEGREMOVE, vp); 2450 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID + 2451 NFSX_UNSIGNED); 2452 if (NFSHASNFSV4N(nmp)) 2453 *tl++ = 0; 2454 else 2455 *tl++ = dstateid.seqid; 2456 *tl++ = dstateid.other[0]; 2457 *tl++ = dstateid.other[1]; 2458 *tl++ = dstateid.other[2]; 2459 *tl = txdr_unsigned(NFSV4OP_PUTFH); 2460 np = VTONFS(dvp); 2461 (void) nfsm_fhtom(nd, np->n_fhp->nfh_fh, 2462 np->n_fhp->nfh_len, 0); 2463 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2464 *tl = txdr_unsigned(NFSV4OP_REMOVE); 2465 } 2466 } else { 2467 ret = 0; 2468 } 2469 if (ret == 0) 2470 NFSCL_REQSTART(nd, NFSPROC_REMOVE, dvp); 2471 (void) nfsm_strtom(nd, name, namelen); 2472 error = nfscl_request(nd, dvp, p, cred, dstuff); 2473 if (error) 2474 return (error); 2475 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) { 2476 /* For NFSv4, parse out any Delereturn replies. */ 2477 if (ret > 0 && nd->nd_repstat != 0 && 2478 (nd->nd_flag & ND_NOMOREDATA)) { 2479 /* 2480 * If the Delegreturn failed, try again without 2481 * it. The server will Recall, as required. 2482 */ 2483 m_freem(nd->nd_mrep); 2484 goto tryagain; 2485 } 2486 for (i = 0; i < (ret * 2); i++) { 2487 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == 2488 ND_NFSV4) { 2489 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2490 if (*(tl + 1)) 2491 nd->nd_flag |= ND_NOMOREDATA; 2492 } 2493 } 2494 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 2495 } 2496 if (nd->nd_repstat && !error) 2497 error = nd->nd_repstat; 2498 nfsmout: 2499 m_freem(nd->nd_mrep); 2500 return (error); 2501 } 2502 2503 /* 2504 * Do an nfs rename rpc. 2505 */ 2506 int 2507 nfsrpc_rename(vnode_t fdvp, vnode_t fvp, char *fnameptr, int fnamelen, 2508 vnode_t tdvp, vnode_t tvp, char *tnameptr, int tnamelen, struct ucred *cred, 2509 NFSPROC_T *p, struct nfsvattr *fnap, struct nfsvattr *tnap, 2510 int *fattrflagp, int *tattrflagp, void *fstuff, void *tstuff) 2511 { 2512 u_int32_t *tl; 2513 struct nfsrv_descript nfsd, *nd = &nfsd; 2514 struct nfsmount *nmp; 2515 struct nfsnode *np; 2516 nfsattrbit_t attrbits; 2517 nfsv4stateid_t fdstateid, tdstateid; 2518 int error = 0, ret = 0, gottd = 0, gotfd = 0, i; 2519 2520 *fattrflagp = 0; 2521 *tattrflagp = 0; 2522 nmp = VFSTONFS(fdvp->v_mount); 2523 if (fnamelen > NFS_MAXNAMLEN || tnamelen > NFS_MAXNAMLEN) 2524 return (ENAMETOOLONG); 2525 tryagain: 2526 if (NFSHASNFSV4(nmp) && ret == 0) { 2527 ret = nfscl_renamedeleg(fvp, &fdstateid, &gotfd, tvp, 2528 &tdstateid, &gottd, p); 2529 if (gotfd && gottd) { 2530 NFSCL_REQSTART(nd, NFSPROC_RETDELEGRENAME2, fvp); 2531 } else if (gotfd) { 2532 NFSCL_REQSTART(nd, NFSPROC_RETDELEGRENAME1, fvp); 2533 } else if (gottd) { 2534 NFSCL_REQSTART(nd, NFSPROC_RETDELEGRENAME1, tvp); 2535 } 2536 if (gotfd) { 2537 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID); 2538 if (NFSHASNFSV4N(nmp)) 2539 *tl++ = 0; 2540 else 2541 *tl++ = fdstateid.seqid; 2542 *tl++ = fdstateid.other[0]; 2543 *tl++ = fdstateid.other[1]; 2544 *tl = fdstateid.other[2]; 2545 if (gottd) { 2546 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2547 *tl = txdr_unsigned(NFSV4OP_PUTFH); 2548 np = VTONFS(tvp); 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_DELEGRETURN); 2553 } 2554 } 2555 if (gottd) { 2556 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID); 2557 if (NFSHASNFSV4N(nmp)) 2558 *tl++ = 0; 2559 else 2560 *tl++ = tdstateid.seqid; 2561 *tl++ = tdstateid.other[0]; 2562 *tl++ = tdstateid.other[1]; 2563 *tl = tdstateid.other[2]; 2564 } 2565 if (ret > 0) { 2566 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2567 *tl = txdr_unsigned(NFSV4OP_PUTFH); 2568 np = VTONFS(fdvp); 2569 (void) nfsm_fhtom(nd, np->n_fhp->nfh_fh, 2570 np->n_fhp->nfh_len, 0); 2571 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2572 *tl = txdr_unsigned(NFSV4OP_SAVEFH); 2573 } 2574 } else { 2575 ret = 0; 2576 } 2577 if (ret == 0) 2578 NFSCL_REQSTART(nd, NFSPROC_RENAME, fdvp); 2579 if (nd->nd_flag & ND_NFSV4) { 2580 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2581 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2582 NFSWCCATTR_ATTRBIT(&attrbits); 2583 (void) nfsrv_putattrbit(nd, &attrbits); 2584 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2585 *tl = txdr_unsigned(NFSV4OP_PUTFH); 2586 (void) nfsm_fhtom(nd, VTONFS(tdvp)->n_fhp->nfh_fh, 2587 VTONFS(tdvp)->n_fhp->nfh_len, 0); 2588 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2589 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2590 (void) nfsrv_putattrbit(nd, &attrbits); 2591 nd->nd_flag |= ND_V4WCCATTR; 2592 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2593 *tl = txdr_unsigned(NFSV4OP_RENAME); 2594 } 2595 (void) nfsm_strtom(nd, fnameptr, fnamelen); 2596 if (!(nd->nd_flag & ND_NFSV4)) 2597 (void) nfsm_fhtom(nd, VTONFS(tdvp)->n_fhp->nfh_fh, 2598 VTONFS(tdvp)->n_fhp->nfh_len, 0); 2599 (void) nfsm_strtom(nd, tnameptr, tnamelen); 2600 error = nfscl_request(nd, fdvp, p, cred, fstuff); 2601 if (error) 2602 return (error); 2603 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) { 2604 /* For NFSv4, parse out any Delereturn replies. */ 2605 if (ret > 0 && nd->nd_repstat != 0 && 2606 (nd->nd_flag & ND_NOMOREDATA)) { 2607 /* 2608 * If the Delegreturn failed, try again without 2609 * it. The server will Recall, as required. 2610 */ 2611 m_freem(nd->nd_mrep); 2612 goto tryagain; 2613 } 2614 for (i = 0; i < (ret * 2); i++) { 2615 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == 2616 ND_NFSV4) { 2617 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2618 if (*(tl + 1)) { 2619 if (i == 0 && ret > 1) { 2620 /* 2621 * If the Delegreturn failed, try again 2622 * without it. The server will Recall, as 2623 * required. 2624 * If ret > 1, the first iteration of this 2625 * loop is the second DelegReturn result. 2626 */ 2627 m_freem(nd->nd_mrep); 2628 goto tryagain; 2629 } else { 2630 nd->nd_flag |= ND_NOMOREDATA; 2631 } 2632 } 2633 } 2634 } 2635 /* Now, the first wcc attribute reply. */ 2636 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == ND_NFSV4) { 2637 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2638 if (*(tl + 1)) 2639 nd->nd_flag |= ND_NOMOREDATA; 2640 } 2641 error = nfscl_wcc_data(nd, fdvp, fnap, fattrflagp, NULL, 2642 fstuff); 2643 /* and the second wcc attribute reply. */ 2644 if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == ND_NFSV4 && 2645 !error) { 2646 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2647 if (*(tl + 1)) 2648 nd->nd_flag |= ND_NOMOREDATA; 2649 } 2650 if (!error) 2651 error = nfscl_wcc_data(nd, tdvp, tnap, tattrflagp, 2652 NULL, tstuff); 2653 } 2654 if (nd->nd_repstat && !error) 2655 error = nd->nd_repstat; 2656 nfsmout: 2657 m_freem(nd->nd_mrep); 2658 return (error); 2659 } 2660 2661 /* 2662 * nfs hard link create rpc 2663 */ 2664 int 2665 nfsrpc_link(vnode_t dvp, vnode_t vp, char *name, int namelen, 2666 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap, 2667 struct nfsvattr *nap, int *attrflagp, int *dattrflagp, void *dstuff) 2668 { 2669 u_int32_t *tl; 2670 struct nfsrv_descript nfsd, *nd = &nfsd; 2671 nfsattrbit_t attrbits; 2672 int error = 0; 2673 2674 *attrflagp = 0; 2675 *dattrflagp = 0; 2676 if (namelen > NFS_MAXNAMLEN) 2677 return (ENAMETOOLONG); 2678 NFSCL_REQSTART(nd, NFSPROC_LINK, vp); 2679 if (nd->nd_flag & ND_NFSV4) { 2680 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2681 *tl = txdr_unsigned(NFSV4OP_PUTFH); 2682 } 2683 (void) nfsm_fhtom(nd, VTONFS(dvp)->n_fhp->nfh_fh, 2684 VTONFS(dvp)->n_fhp->nfh_len, 0); 2685 if (nd->nd_flag & ND_NFSV4) { 2686 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2687 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2688 NFSWCCATTR_ATTRBIT(&attrbits); 2689 (void) nfsrv_putattrbit(nd, &attrbits); 2690 nd->nd_flag |= ND_V4WCCATTR; 2691 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2692 *tl = txdr_unsigned(NFSV4OP_LINK); 2693 } 2694 (void) nfsm_strtom(nd, name, namelen); 2695 error = nfscl_request(nd, vp, p, cred, dstuff); 2696 if (error) 2697 return (error); 2698 if (nd->nd_flag & ND_NFSV3) { 2699 error = nfscl_postop_attr(nd, nap, attrflagp, dstuff); 2700 if (!error) 2701 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, 2702 NULL, dstuff); 2703 } else if ((nd->nd_flag & (ND_NFSV4 | ND_NOMOREDATA)) == ND_NFSV4) { 2704 /* 2705 * First, parse out the PutFH and Getattr result. 2706 */ 2707 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2708 if (!(*(tl + 1))) 2709 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2710 if (*(tl + 1)) 2711 nd->nd_flag |= ND_NOMOREDATA; 2712 /* 2713 * Get the pre-op attributes. 2714 */ 2715 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 2716 } 2717 if (nd->nd_repstat && !error) 2718 error = nd->nd_repstat; 2719 nfsmout: 2720 m_freem(nd->nd_mrep); 2721 return (error); 2722 } 2723 2724 /* 2725 * nfs symbolic link create rpc 2726 */ 2727 int 2728 nfsrpc_symlink(vnode_t dvp, char *name, int namelen, const char *target, 2729 struct vattr *vap, struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap, 2730 struct nfsvattr *nnap, struct nfsfh **nfhpp, int *attrflagp, 2731 int *dattrflagp, void *dstuff) 2732 { 2733 u_int32_t *tl; 2734 struct nfsrv_descript nfsd, *nd = &nfsd; 2735 struct nfsmount *nmp; 2736 int slen, error = 0; 2737 2738 *nfhpp = NULL; 2739 *attrflagp = 0; 2740 *dattrflagp = 0; 2741 nmp = VFSTONFS(dvp->v_mount); 2742 slen = strlen(target); 2743 if (slen > NFS_MAXPATHLEN || namelen > NFS_MAXNAMLEN) 2744 return (ENAMETOOLONG); 2745 NFSCL_REQSTART(nd, NFSPROC_SYMLINK, dvp); 2746 if (nd->nd_flag & ND_NFSV4) { 2747 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2748 *tl = txdr_unsigned(NFLNK); 2749 (void) nfsm_strtom(nd, target, slen); 2750 } 2751 (void) nfsm_strtom(nd, name, namelen); 2752 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) 2753 nfscl_fillsattr(nd, vap, dvp, 0, 0); 2754 if (!(nd->nd_flag & ND_NFSV4)) 2755 (void) nfsm_strtom(nd, target, slen); 2756 if (nd->nd_flag & ND_NFSV2) 2757 nfscl_fillsattr(nd, vap, dvp, NFSSATTR_SIZENEG1, 0); 2758 error = nfscl_request(nd, dvp, p, cred, dstuff); 2759 if (error) 2760 return (error); 2761 if (nd->nd_flag & ND_NFSV4) 2762 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 2763 if ((nd->nd_flag & ND_NFSV3) && !error) { 2764 if (!nd->nd_repstat) 2765 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp); 2766 if (!error) 2767 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, 2768 NULL, dstuff); 2769 } 2770 if (nd->nd_repstat && !error) 2771 error = nd->nd_repstat; 2772 m_freem(nd->nd_mrep); 2773 /* 2774 * Kludge: Map EEXIST => 0 assuming that it is a reply to a retry. 2775 * Only do this if vfs.nfs.ignore_eexist is set. 2776 * Never do this for NFSv4.1 or later minor versions, since sessions 2777 * should guarantee "exactly once" RPC semantics. 2778 */ 2779 if (error == EEXIST && nfsignore_eexist != 0 && (!NFSHASNFSV4(nmp) || 2780 nmp->nm_minorvers == 0)) 2781 error = 0; 2782 return (error); 2783 } 2784 2785 /* 2786 * nfs make dir rpc 2787 */ 2788 int 2789 nfsrpc_mkdir(vnode_t dvp, char *name, int namelen, struct vattr *vap, 2790 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap, 2791 struct nfsvattr *nnap, struct nfsfh **nfhpp, int *attrflagp, 2792 int *dattrflagp, void *dstuff) 2793 { 2794 u_int32_t *tl; 2795 struct nfsrv_descript nfsd, *nd = &nfsd; 2796 nfsattrbit_t attrbits; 2797 int error = 0; 2798 struct nfsfh *fhp; 2799 struct nfsmount *nmp; 2800 2801 *nfhpp = NULL; 2802 *attrflagp = 0; 2803 *dattrflagp = 0; 2804 nmp = VFSTONFS(dvp->v_mount); 2805 fhp = VTONFS(dvp)->n_fhp; 2806 if (namelen > NFS_MAXNAMLEN) 2807 return (ENAMETOOLONG); 2808 NFSCL_REQSTART(nd, NFSPROC_MKDIR, dvp); 2809 if (nd->nd_flag & ND_NFSV4) { 2810 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2811 *tl = txdr_unsigned(NFDIR); 2812 } 2813 (void) nfsm_strtom(nd, name, namelen); 2814 nfscl_fillsattr(nd, vap, dvp, NFSSATTR_SIZENEG1, 0); 2815 if (nd->nd_flag & ND_NFSV4) { 2816 NFSGETATTR_ATTRBIT(&attrbits); 2817 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2818 *tl++ = txdr_unsigned(NFSV4OP_GETFH); 2819 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2820 (void) nfsrv_putattrbit(nd, &attrbits); 2821 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2822 *tl = txdr_unsigned(NFSV4OP_PUTFH); 2823 (void) nfsm_fhtom(nd, fhp->nfh_fh, fhp->nfh_len, 0); 2824 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 2825 *tl = txdr_unsigned(NFSV4OP_GETATTR); 2826 (void) nfsrv_putattrbit(nd, &attrbits); 2827 } 2828 error = nfscl_request(nd, dvp, p, cred, dstuff); 2829 if (error) 2830 return (error); 2831 if (nd->nd_flag & ND_NFSV4) 2832 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 2833 if (!nd->nd_repstat && !error) { 2834 if (nd->nd_flag & ND_NFSV4) { 2835 NFSM_DISSECT(tl, u_int32_t *, 5 * NFSX_UNSIGNED); 2836 error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL); 2837 } 2838 if (!error) 2839 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp); 2840 if (error == 0 && (nd->nd_flag & ND_NFSV4) != 0) { 2841 /* Get rid of the PutFH and Getattr status values. */ 2842 NFSM_DISSECT(tl, u_int32_t *, 4 * NFSX_UNSIGNED); 2843 /* Load the directory attributes. */ 2844 error = nfsm_loadattr(nd, dnap); 2845 if (error == 0) 2846 *dattrflagp = 1; 2847 } 2848 } 2849 if ((nd->nd_flag & ND_NFSV3) && !error) 2850 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 2851 if (nd->nd_repstat && !error) 2852 error = nd->nd_repstat; 2853 nfsmout: 2854 m_freem(nd->nd_mrep); 2855 /* 2856 * Kludge: Map EEXIST => 0 assuming that it is a reply to a retry. 2857 * Only do this if vfs.nfs.ignore_eexist is set. 2858 * Never do this for NFSv4.1 or later minor versions, since sessions 2859 * should guarantee "exactly once" RPC semantics. 2860 */ 2861 if (error == EEXIST && nfsignore_eexist != 0 && (!NFSHASNFSV4(nmp) || 2862 nmp->nm_minorvers == 0)) 2863 error = 0; 2864 return (error); 2865 } 2866 2867 /* 2868 * nfs remove directory call 2869 */ 2870 int 2871 nfsrpc_rmdir(vnode_t dvp, char *name, int namelen, struct ucred *cred, 2872 NFSPROC_T *p, struct nfsvattr *dnap, int *dattrflagp, void *dstuff) 2873 { 2874 struct nfsrv_descript nfsd, *nd = &nfsd; 2875 int error = 0; 2876 2877 *dattrflagp = 0; 2878 if (namelen > NFS_MAXNAMLEN) 2879 return (ENAMETOOLONG); 2880 NFSCL_REQSTART(nd, NFSPROC_RMDIR, dvp); 2881 (void) nfsm_strtom(nd, name, namelen); 2882 error = nfscl_request(nd, dvp, p, cred, dstuff); 2883 if (error) 2884 return (error); 2885 if (nd->nd_flag & (ND_NFSV3 | ND_NFSV4)) 2886 error = nfscl_wcc_data(nd, dvp, dnap, dattrflagp, NULL, dstuff); 2887 if (nd->nd_repstat && !error) 2888 error = nd->nd_repstat; 2889 m_freem(nd->nd_mrep); 2890 /* 2891 * Kludge: Map ENOENT => 0 assuming that you have a reply to a retry. 2892 */ 2893 if (error == ENOENT) 2894 error = 0; 2895 return (error); 2896 } 2897 2898 /* 2899 * Readdir rpc. 2900 * Always returns with either uio_resid unchanged, if you are at the 2901 * end of the directory, or uio_resid == 0, with all DIRBLKSIZ chunks 2902 * filled in. 2903 * I felt this would allow caching of directory blocks more easily 2904 * than returning a pertially filled block. 2905 * Directory offset cookies: 2906 * Oh my, what to do with them... 2907 * I can think of three ways to deal with them: 2908 * 1 - have the layer above these RPCs maintain a map between logical 2909 * directory byte offsets and the NFS directory offset cookies 2910 * 2 - pass the opaque directory offset cookies up into userland 2911 * and let the libc functions deal with them, via the system call 2912 * 3 - return them to userland in the "struct dirent", so future versions 2913 * of libc can use them and do whatever is necessary to make things work 2914 * above these rpc calls, in the meantime 2915 * For now, I do #3 by "hiding" the directory offset cookies after the 2916 * d_name field in struct dirent. This is space inside d_reclen that 2917 * will be ignored by anything that doesn't know about them. 2918 * The directory offset cookies are filled in as the last 8 bytes of 2919 * each directory entry, after d_name. Someday, the userland libc 2920 * functions may be able to use these. In the meantime, it satisfies 2921 * OpenBSD's requirements for cookies being returned. 2922 * If expects the directory offset cookie for the read to be in uio_offset 2923 * and returns the one for the next entry after this directory block in 2924 * there, as well. 2925 */ 2926 int 2927 nfsrpc_readdir(vnode_t vp, struct uio *uiop, nfsuint64 *cookiep, 2928 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, 2929 int *eofp, void *stuff) 2930 { 2931 int len, left; 2932 struct dirent *dp = NULL; 2933 u_int32_t *tl; 2934 nfsquad_t cookie, ncookie; 2935 struct nfsmount *nmp = VFSTONFS(vp->v_mount); 2936 struct nfsnode *dnp = VTONFS(vp); 2937 struct nfsvattr nfsva; 2938 struct nfsrv_descript nfsd, *nd = &nfsd; 2939 int error = 0, tlen, more_dirs = 1, blksiz = 0, bigenough = 1; 2940 int reqsize, tryformoredirs = 1, readsize, eof = 0, gotmnton = 0; 2941 u_int64_t dotfileid, dotdotfileid = 0, fakefileno = UINT64_MAX; 2942 char *cp; 2943 nfsattrbit_t attrbits, dattrbits; 2944 u_int32_t rderr, *tl2 = NULL; 2945 size_t tresid; 2946 2947 KASSERT(uiop->uio_iovcnt == 1 && 2948 (uiop->uio_resid & (DIRBLKSIZ - 1)) == 0, 2949 ("nfs readdirrpc bad uio")); 2950 ncookie.lval[0] = ncookie.lval[1] = 0; 2951 /* 2952 * There is no point in reading a lot more than uio_resid, however 2953 * adding one additional DIRBLKSIZ makes sense. Since uio_resid 2954 * and nm_readdirsize are both exact multiples of DIRBLKSIZ, this 2955 * will never make readsize > nm_readdirsize. 2956 */ 2957 readsize = nmp->nm_readdirsize; 2958 if (readsize > uiop->uio_resid) 2959 readsize = uiop->uio_resid + DIRBLKSIZ; 2960 2961 *attrflagp = 0; 2962 if (eofp) 2963 *eofp = 0; 2964 tresid = uiop->uio_resid; 2965 cookie.lval[0] = cookiep->nfsuquad[0]; 2966 cookie.lval[1] = cookiep->nfsuquad[1]; 2967 nd->nd_mrep = NULL; 2968 2969 /* 2970 * For NFSv4, first create the "." and ".." entries. 2971 */ 2972 if (NFSHASNFSV4(nmp)) { 2973 reqsize = 6 * NFSX_UNSIGNED; 2974 NFSGETATTR_ATTRBIT(&dattrbits); 2975 NFSZERO_ATTRBIT(&attrbits); 2976 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_FILEID); 2977 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_TYPE); 2978 if (NFSISSET_ATTRBIT(&dnp->n_vattr.na_suppattr, 2979 NFSATTRBIT_MOUNTEDONFILEID)) { 2980 NFSSETBIT_ATTRBIT(&attrbits, 2981 NFSATTRBIT_MOUNTEDONFILEID); 2982 gotmnton = 1; 2983 } else { 2984 /* 2985 * Must fake it. Use the fileno, except when the 2986 * fsid is != to that of the directory. For that 2987 * case, generate a fake fileno that is not the same. 2988 */ 2989 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_FSID); 2990 gotmnton = 0; 2991 } 2992 2993 /* 2994 * Joy, oh joy. For V4 we get to hand craft '.' and '..'. 2995 */ 2996 if (uiop->uio_offset == 0) { 2997 NFSCL_REQSTART(nd, NFSPROC_LOOKUPP, vp); 2998 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 2999 *tl++ = txdr_unsigned(NFSV4OP_GETFH); 3000 *tl = txdr_unsigned(NFSV4OP_GETATTR); 3001 (void) nfsrv_putattrbit(nd, &attrbits); 3002 error = nfscl_request(nd, vp, p, cred, stuff); 3003 if (error) 3004 return (error); 3005 dotfileid = 0; /* Fake out the compiler. */ 3006 if ((nd->nd_flag & ND_NOMOREDATA) == 0) { 3007 error = nfsm_loadattr(nd, &nfsva); 3008 if (error != 0) 3009 goto nfsmout; 3010 dotfileid = nfsva.na_fileid; 3011 } 3012 if (nd->nd_repstat == 0) { 3013 NFSM_DISSECT(tl, u_int32_t *, 5 * NFSX_UNSIGNED); 3014 len = fxdr_unsigned(int, *(tl + 4)); 3015 if (len > 0 && len <= NFSX_V4FHMAX) 3016 error = nfsm_advance(nd, NFSM_RNDUP(len), -1); 3017 else 3018 error = EPERM; 3019 if (!error) { 3020 NFSM_DISSECT(tl, u_int32_t *, 2*NFSX_UNSIGNED); 3021 nfsva.na_mntonfileno = UINT64_MAX; 3022 error = nfsv4_loadattr(nd, NULL, &nfsva, NULL, 3023 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0, 3024 NULL, NULL, NULL, p, cred); 3025 if (error) { 3026 dotdotfileid = dotfileid; 3027 } else if (gotmnton) { 3028 if (nfsva.na_mntonfileno != UINT64_MAX) 3029 dotdotfileid = nfsva.na_mntonfileno; 3030 else 3031 dotdotfileid = nfsva.na_fileid; 3032 } else if (nfsva.na_filesid[0] == 3033 dnp->n_vattr.na_filesid[0] && 3034 nfsva.na_filesid[1] == 3035 dnp->n_vattr.na_filesid[1]) { 3036 dotdotfileid = nfsva.na_fileid; 3037 } else { 3038 do { 3039 fakefileno--; 3040 } while (fakefileno == 3041 nfsva.na_fileid); 3042 dotdotfileid = fakefileno; 3043 } 3044 } 3045 } else if (nd->nd_repstat == NFSERR_NOENT) { 3046 /* 3047 * Lookupp returns NFSERR_NOENT when we are 3048 * at the root, so just use the current dir. 3049 */ 3050 nd->nd_repstat = 0; 3051 dotdotfileid = dotfileid; 3052 } else { 3053 error = nd->nd_repstat; 3054 } 3055 m_freem(nd->nd_mrep); 3056 if (error) 3057 return (error); 3058 nd->nd_mrep = NULL; 3059 dp = (struct dirent *)uiop->uio_iov->iov_base; 3060 dp->d_pad0 = dp->d_pad1 = 0; 3061 dp->d_off = 0; 3062 dp->d_type = DT_DIR; 3063 dp->d_fileno = dotfileid; 3064 dp->d_namlen = 1; 3065 *((uint64_t *)dp->d_name) = 0; /* Zero pad it. */ 3066 dp->d_name[0] = '.'; 3067 dp->d_reclen = _GENERIC_DIRSIZ(dp) + NFSX_HYPER; 3068 /* 3069 * Just make these offset cookie 0. 3070 */ 3071 tl = (u_int32_t *)&dp->d_name[8]; 3072 *tl++ = 0; 3073 *tl = 0; 3074 blksiz += dp->d_reclen; 3075 uiop->uio_resid -= dp->d_reclen; 3076 uiop->uio_offset += dp->d_reclen; 3077 uiop->uio_iov->iov_base = 3078 (char *)uiop->uio_iov->iov_base + dp->d_reclen; 3079 uiop->uio_iov->iov_len -= dp->d_reclen; 3080 dp = (struct dirent *)uiop->uio_iov->iov_base; 3081 dp->d_pad0 = dp->d_pad1 = 0; 3082 dp->d_off = 0; 3083 dp->d_type = DT_DIR; 3084 dp->d_fileno = dotdotfileid; 3085 dp->d_namlen = 2; 3086 *((uint64_t *)dp->d_name) = 0; 3087 dp->d_name[0] = '.'; 3088 dp->d_name[1] = '.'; 3089 dp->d_reclen = _GENERIC_DIRSIZ(dp) + NFSX_HYPER; 3090 /* 3091 * Just make these offset cookie 0. 3092 */ 3093 tl = (u_int32_t *)&dp->d_name[8]; 3094 *tl++ = 0; 3095 *tl = 0; 3096 blksiz += dp->d_reclen; 3097 uiop->uio_resid -= dp->d_reclen; 3098 uiop->uio_offset += dp->d_reclen; 3099 uiop->uio_iov->iov_base = 3100 (char *)uiop->uio_iov->iov_base + dp->d_reclen; 3101 uiop->uio_iov->iov_len -= dp->d_reclen; 3102 } 3103 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_RDATTRERROR); 3104 } else { 3105 reqsize = 5 * NFSX_UNSIGNED; 3106 } 3107 3108 /* 3109 * Loop around doing readdir rpc's of size readsize. 3110 * The stopping criteria is EOF or buffer full. 3111 */ 3112 while (more_dirs && bigenough) { 3113 *attrflagp = 0; 3114 NFSCL_REQSTART(nd, NFSPROC_READDIR, vp); 3115 if (nd->nd_flag & ND_NFSV2) { 3116 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 3117 *tl++ = cookie.lval[1]; 3118 *tl = txdr_unsigned(readsize); 3119 } else { 3120 NFSM_BUILD(tl, u_int32_t *, reqsize); 3121 *tl++ = cookie.lval[0]; 3122 *tl++ = cookie.lval[1]; 3123 if (cookie.qval == 0) { 3124 *tl++ = 0; 3125 *tl++ = 0; 3126 } else { 3127 NFSLOCKNODE(dnp); 3128 *tl++ = dnp->n_cookieverf.nfsuquad[0]; 3129 *tl++ = dnp->n_cookieverf.nfsuquad[1]; 3130 NFSUNLOCKNODE(dnp); 3131 } 3132 if (nd->nd_flag & ND_NFSV4) { 3133 *tl++ = txdr_unsigned(readsize); 3134 *tl = txdr_unsigned(readsize); 3135 (void) nfsrv_putattrbit(nd, &attrbits); 3136 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 3137 *tl = txdr_unsigned(NFSV4OP_GETATTR); 3138 (void) nfsrv_putattrbit(nd, &dattrbits); 3139 } else { 3140 *tl = txdr_unsigned(readsize); 3141 } 3142 } 3143 error = nfscl_request(nd, vp, p, cred, stuff); 3144 if (error) 3145 return (error); 3146 if (!(nd->nd_flag & ND_NFSV2)) { 3147 if (nd->nd_flag & ND_NFSV3) 3148 error = nfscl_postop_attr(nd, nap, attrflagp, 3149 stuff); 3150 if (!nd->nd_repstat && !error) { 3151 NFSM_DISSECT(tl, u_int32_t *, NFSX_HYPER); 3152 NFSLOCKNODE(dnp); 3153 dnp->n_cookieverf.nfsuquad[0] = *tl++; 3154 dnp->n_cookieverf.nfsuquad[1] = *tl; 3155 NFSUNLOCKNODE(dnp); 3156 } 3157 } 3158 if (nd->nd_repstat || error) { 3159 if (!error) 3160 error = nd->nd_repstat; 3161 goto nfsmout; 3162 } 3163 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 3164 more_dirs = fxdr_unsigned(int, *tl); 3165 if (!more_dirs) 3166 tryformoredirs = 0; 3167 3168 /* loop through the dir entries, doctoring them to 4bsd form */ 3169 while (more_dirs && bigenough) { 3170 if (nd->nd_flag & ND_NFSV4) { 3171 NFSM_DISSECT(tl, u_int32_t *, 3*NFSX_UNSIGNED); 3172 ncookie.lval[0] = *tl++; 3173 ncookie.lval[1] = *tl++; 3174 len = fxdr_unsigned(int, *tl); 3175 } else if (nd->nd_flag & ND_NFSV3) { 3176 NFSM_DISSECT(tl, u_int32_t *, 3*NFSX_UNSIGNED); 3177 nfsva.na_fileid = fxdr_hyper(tl); 3178 tl += 2; 3179 len = fxdr_unsigned(int, *tl); 3180 } else { 3181 NFSM_DISSECT(tl, u_int32_t *, 2*NFSX_UNSIGNED); 3182 nfsva.na_fileid = fxdr_unsigned(uint64_t, 3183 *tl++); 3184 len = fxdr_unsigned(int, *tl); 3185 } 3186 if (len <= 0 || len > NFS_MAXNAMLEN) { 3187 error = EBADRPC; 3188 goto nfsmout; 3189 } 3190 tlen = roundup2(len, 8); 3191 if (tlen == len) 3192 tlen += 8; /* To ensure null termination. */ 3193 left = DIRBLKSIZ - blksiz; 3194 if (_GENERIC_DIRLEN(len) + NFSX_HYPER > left) { 3195 NFSBZERO(uiop->uio_iov->iov_base, left); 3196 dp->d_reclen += left; 3197 uiop->uio_iov->iov_base = 3198 (char *)uiop->uio_iov->iov_base + left; 3199 uiop->uio_iov->iov_len -= left; 3200 uiop->uio_resid -= left; 3201 uiop->uio_offset += left; 3202 blksiz = 0; 3203 } 3204 if (_GENERIC_DIRLEN(len) + NFSX_HYPER > 3205 uiop->uio_resid) 3206 bigenough = 0; 3207 if (bigenough) { 3208 dp = (struct dirent *)uiop->uio_iov->iov_base; 3209 dp->d_pad0 = dp->d_pad1 = 0; 3210 dp->d_off = 0; 3211 dp->d_namlen = len; 3212 dp->d_reclen = _GENERIC_DIRLEN(len) + 3213 NFSX_HYPER; 3214 dp->d_type = DT_UNKNOWN; 3215 blksiz += dp->d_reclen; 3216 if (blksiz == DIRBLKSIZ) 3217 blksiz = 0; 3218 uiop->uio_resid -= DIRHDSIZ; 3219 uiop->uio_offset += DIRHDSIZ; 3220 uiop->uio_iov->iov_base = 3221 (char *)uiop->uio_iov->iov_base + DIRHDSIZ; 3222 uiop->uio_iov->iov_len -= DIRHDSIZ; 3223 error = nfsm_mbufuio(nd, uiop, len); 3224 if (error) 3225 goto nfsmout; 3226 cp = uiop->uio_iov->iov_base; 3227 tlen -= len; 3228 NFSBZERO(cp, tlen); 3229 cp += tlen; /* points to cookie storage */ 3230 tl2 = (u_int32_t *)cp; 3231 uiop->uio_iov->iov_base = 3232 (char *)uiop->uio_iov->iov_base + tlen + 3233 NFSX_HYPER; 3234 uiop->uio_iov->iov_len -= tlen + NFSX_HYPER; 3235 uiop->uio_resid -= tlen + NFSX_HYPER; 3236 uiop->uio_offset += (tlen + NFSX_HYPER); 3237 } else { 3238 error = nfsm_advance(nd, NFSM_RNDUP(len), -1); 3239 if (error) 3240 goto nfsmout; 3241 } 3242 if (nd->nd_flag & ND_NFSV4) { 3243 rderr = 0; 3244 nfsva.na_mntonfileno = UINT64_MAX; 3245 error = nfsv4_loadattr(nd, NULL, &nfsva, NULL, 3246 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0, 3247 NULL, NULL, &rderr, p, cred); 3248 if (error) 3249 goto nfsmout; 3250 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 3251 } else if (nd->nd_flag & ND_NFSV3) { 3252 NFSM_DISSECT(tl, u_int32_t *, 3*NFSX_UNSIGNED); 3253 ncookie.lval[0] = *tl++; 3254 ncookie.lval[1] = *tl++; 3255 } else { 3256 NFSM_DISSECT(tl, u_int32_t *, 2*NFSX_UNSIGNED); 3257 ncookie.lval[0] = 0; 3258 ncookie.lval[1] = *tl++; 3259 } 3260 if (bigenough) { 3261 if (nd->nd_flag & ND_NFSV4) { 3262 if (rderr) { 3263 dp->d_fileno = 0; 3264 } else { 3265 if (gotmnton) { 3266 if (nfsva.na_mntonfileno != UINT64_MAX) 3267 dp->d_fileno = nfsva.na_mntonfileno; 3268 else 3269 dp->d_fileno = nfsva.na_fileid; 3270 } else if (nfsva.na_filesid[0] == 3271 dnp->n_vattr.na_filesid[0] && 3272 nfsva.na_filesid[1] == 3273 dnp->n_vattr.na_filesid[1]) { 3274 dp->d_fileno = nfsva.na_fileid; 3275 } else { 3276 do { 3277 fakefileno--; 3278 } while (fakefileno == 3279 nfsva.na_fileid); 3280 dp->d_fileno = fakefileno; 3281 } 3282 dp->d_type = vtonfs_dtype(nfsva.na_type); 3283 } 3284 } else { 3285 dp->d_fileno = nfsva.na_fileid; 3286 } 3287 *tl2++ = cookiep->nfsuquad[0] = cookie.lval[0] = 3288 ncookie.lval[0]; 3289 *tl2 = cookiep->nfsuquad[1] = cookie.lval[1] = 3290 ncookie.lval[1]; 3291 } 3292 more_dirs = fxdr_unsigned(int, *tl); 3293 } 3294 /* 3295 * If at end of rpc data, get the eof boolean 3296 */ 3297 if (!more_dirs) { 3298 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 3299 eof = fxdr_unsigned(int, *tl); 3300 if (tryformoredirs) 3301 more_dirs = !eof; 3302 if (nd->nd_flag & ND_NFSV4) { 3303 error = nfscl_postop_attr(nd, nap, attrflagp, 3304 stuff); 3305 if (error) 3306 goto nfsmout; 3307 } 3308 } 3309 m_freem(nd->nd_mrep); 3310 nd->nd_mrep = NULL; 3311 } 3312 /* 3313 * Fill last record, iff any, out to a multiple of DIRBLKSIZ 3314 * by increasing d_reclen for the last record. 3315 */ 3316 if (blksiz > 0) { 3317 left = DIRBLKSIZ - blksiz; 3318 NFSBZERO(uiop->uio_iov->iov_base, left); 3319 dp->d_reclen += left; 3320 uiop->uio_iov->iov_base = (char *)uiop->uio_iov->iov_base + 3321 left; 3322 uiop->uio_iov->iov_len -= left; 3323 uiop->uio_resid -= left; 3324 uiop->uio_offset += left; 3325 } 3326 3327 /* 3328 * If returning no data, assume end of file. 3329 * If not bigenough, return not end of file, since you aren't 3330 * returning all the data 3331 * Otherwise, return the eof flag from the server. 3332 */ 3333 if (eofp) { 3334 if (tresid == ((size_t)(uiop->uio_resid))) 3335 *eofp = 1; 3336 else if (!bigenough) 3337 *eofp = 0; 3338 else 3339 *eofp = eof; 3340 } 3341 3342 /* 3343 * Add extra empty records to any remaining DIRBLKSIZ chunks. 3344 */ 3345 while (uiop->uio_resid > 0 && uiop->uio_resid != tresid) { 3346 dp = (struct dirent *)uiop->uio_iov->iov_base; 3347 NFSBZERO(dp, DIRBLKSIZ); 3348 dp->d_type = DT_UNKNOWN; 3349 tl = (u_int32_t *)&dp->d_name[4]; 3350 *tl++ = cookie.lval[0]; 3351 *tl = cookie.lval[1]; 3352 dp->d_reclen = DIRBLKSIZ; 3353 uiop->uio_iov->iov_base = (char *)uiop->uio_iov->iov_base + 3354 DIRBLKSIZ; 3355 uiop->uio_iov->iov_len -= DIRBLKSIZ; 3356 uiop->uio_resid -= DIRBLKSIZ; 3357 uiop->uio_offset += DIRBLKSIZ; 3358 } 3359 3360 nfsmout: 3361 if (nd->nd_mrep != NULL) 3362 m_freem(nd->nd_mrep); 3363 return (error); 3364 } 3365 3366 #ifndef APPLE 3367 /* 3368 * NFS V3 readdir plus RPC. Used in place of nfsrpc_readdir(). 3369 * (Also used for NFS V4 when mount flag set.) 3370 * (ditto above w.r.t. multiple of DIRBLKSIZ, etc.) 3371 */ 3372 int 3373 nfsrpc_readdirplus(vnode_t vp, struct uio *uiop, nfsuint64 *cookiep, 3374 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, 3375 int *eofp, void *stuff) 3376 { 3377 int len, left; 3378 struct dirent *dp = NULL; 3379 u_int32_t *tl; 3380 vnode_t newvp = NULLVP; 3381 struct nfsrv_descript nfsd, *nd = &nfsd; 3382 struct nameidata nami, *ndp = &nami; 3383 struct componentname *cnp = &ndp->ni_cnd; 3384 struct nfsmount *nmp = VFSTONFS(vp->v_mount); 3385 struct nfsnode *dnp = VTONFS(vp), *np; 3386 struct nfsvattr nfsva; 3387 struct nfsfh *nfhp; 3388 nfsquad_t cookie, ncookie; 3389 int error = 0, tlen, more_dirs = 1, blksiz = 0, bigenough = 1; 3390 int attrflag, tryformoredirs = 1, eof = 0, gotmnton = 0; 3391 int isdotdot = 0, unlocknewvp = 0; 3392 u_int64_t dotfileid, dotdotfileid = 0, fakefileno = UINT64_MAX; 3393 u_int64_t fileno = 0; 3394 char *cp; 3395 nfsattrbit_t attrbits, dattrbits; 3396 size_t tresid; 3397 u_int32_t *tl2 = NULL, rderr; 3398 struct timespec dctime; 3399 3400 KASSERT(uiop->uio_iovcnt == 1 && 3401 (uiop->uio_resid & (DIRBLKSIZ - 1)) == 0, 3402 ("nfs readdirplusrpc bad uio")); 3403 ncookie.lval[0] = ncookie.lval[1] = 0; 3404 timespecclear(&dctime); 3405 *attrflagp = 0; 3406 if (eofp != NULL) 3407 *eofp = 0; 3408 ndp->ni_dvp = vp; 3409 nd->nd_mrep = NULL; 3410 cookie.lval[0] = cookiep->nfsuquad[0]; 3411 cookie.lval[1] = cookiep->nfsuquad[1]; 3412 tresid = uiop->uio_resid; 3413 3414 /* 3415 * For NFSv4, first create the "." and ".." entries. 3416 */ 3417 if (NFSHASNFSV4(nmp)) { 3418 NFSGETATTR_ATTRBIT(&dattrbits); 3419 NFSZERO_ATTRBIT(&attrbits); 3420 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_FILEID); 3421 if (NFSISSET_ATTRBIT(&dnp->n_vattr.na_suppattr, 3422 NFSATTRBIT_MOUNTEDONFILEID)) { 3423 NFSSETBIT_ATTRBIT(&attrbits, 3424 NFSATTRBIT_MOUNTEDONFILEID); 3425 gotmnton = 1; 3426 } else { 3427 /* 3428 * Must fake it. Use the fileno, except when the 3429 * fsid is != to that of the directory. For that 3430 * case, generate a fake fileno that is not the same. 3431 */ 3432 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_FSID); 3433 gotmnton = 0; 3434 } 3435 3436 /* 3437 * Joy, oh joy. For V4 we get to hand craft '.' and '..'. 3438 */ 3439 if (uiop->uio_offset == 0) { 3440 NFSCL_REQSTART(nd, NFSPROC_LOOKUPP, vp); 3441 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 3442 *tl++ = txdr_unsigned(NFSV4OP_GETFH); 3443 *tl = txdr_unsigned(NFSV4OP_GETATTR); 3444 (void) nfsrv_putattrbit(nd, &attrbits); 3445 error = nfscl_request(nd, vp, p, cred, stuff); 3446 if (error) 3447 return (error); 3448 dotfileid = 0; /* Fake out the compiler. */ 3449 if ((nd->nd_flag & ND_NOMOREDATA) == 0) { 3450 error = nfsm_loadattr(nd, &nfsva); 3451 if (error != 0) 3452 goto nfsmout; 3453 dctime = nfsva.na_ctime; 3454 dotfileid = nfsva.na_fileid; 3455 } 3456 if (nd->nd_repstat == 0) { 3457 NFSM_DISSECT(tl, u_int32_t *, 5 * NFSX_UNSIGNED); 3458 len = fxdr_unsigned(int, *(tl + 4)); 3459 if (len > 0 && len <= NFSX_V4FHMAX) 3460 error = nfsm_advance(nd, NFSM_RNDUP(len), -1); 3461 else 3462 error = EPERM; 3463 if (!error) { 3464 NFSM_DISSECT(tl, u_int32_t *, 2*NFSX_UNSIGNED); 3465 nfsva.na_mntonfileno = UINT64_MAX; 3466 error = nfsv4_loadattr(nd, NULL, &nfsva, NULL, 3467 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0, 3468 NULL, NULL, NULL, p, cred); 3469 if (error) { 3470 dotdotfileid = dotfileid; 3471 } else if (gotmnton) { 3472 if (nfsva.na_mntonfileno != UINT64_MAX) 3473 dotdotfileid = nfsva.na_mntonfileno; 3474 else 3475 dotdotfileid = nfsva.na_fileid; 3476 } else if (nfsva.na_filesid[0] == 3477 dnp->n_vattr.na_filesid[0] && 3478 nfsva.na_filesid[1] == 3479 dnp->n_vattr.na_filesid[1]) { 3480 dotdotfileid = nfsva.na_fileid; 3481 } else { 3482 do { 3483 fakefileno--; 3484 } while (fakefileno == 3485 nfsva.na_fileid); 3486 dotdotfileid = fakefileno; 3487 } 3488 } 3489 } else if (nd->nd_repstat == NFSERR_NOENT) { 3490 /* 3491 * Lookupp returns NFSERR_NOENT when we are 3492 * at the root, so just use the current dir. 3493 */ 3494 nd->nd_repstat = 0; 3495 dotdotfileid = dotfileid; 3496 } else { 3497 error = nd->nd_repstat; 3498 } 3499 m_freem(nd->nd_mrep); 3500 if (error) 3501 return (error); 3502 nd->nd_mrep = NULL; 3503 dp = (struct dirent *)uiop->uio_iov->iov_base; 3504 dp->d_pad0 = dp->d_pad1 = 0; 3505 dp->d_off = 0; 3506 dp->d_type = DT_DIR; 3507 dp->d_fileno = dotfileid; 3508 dp->d_namlen = 1; 3509 *((uint64_t *)dp->d_name) = 0; /* Zero pad it. */ 3510 dp->d_name[0] = '.'; 3511 dp->d_reclen = _GENERIC_DIRSIZ(dp) + NFSX_HYPER; 3512 /* 3513 * Just make these offset cookie 0. 3514 */ 3515 tl = (u_int32_t *)&dp->d_name[8]; 3516 *tl++ = 0; 3517 *tl = 0; 3518 blksiz += dp->d_reclen; 3519 uiop->uio_resid -= dp->d_reclen; 3520 uiop->uio_offset += dp->d_reclen; 3521 uiop->uio_iov->iov_base = 3522 (char *)uiop->uio_iov->iov_base + dp->d_reclen; 3523 uiop->uio_iov->iov_len -= dp->d_reclen; 3524 dp = (struct dirent *)uiop->uio_iov->iov_base; 3525 dp->d_pad0 = dp->d_pad1 = 0; 3526 dp->d_off = 0; 3527 dp->d_type = DT_DIR; 3528 dp->d_fileno = dotdotfileid; 3529 dp->d_namlen = 2; 3530 *((uint64_t *)dp->d_name) = 0; 3531 dp->d_name[0] = '.'; 3532 dp->d_name[1] = '.'; 3533 dp->d_reclen = _GENERIC_DIRSIZ(dp) + NFSX_HYPER; 3534 /* 3535 * Just make these offset cookie 0. 3536 */ 3537 tl = (u_int32_t *)&dp->d_name[8]; 3538 *tl++ = 0; 3539 *tl = 0; 3540 blksiz += dp->d_reclen; 3541 uiop->uio_resid -= dp->d_reclen; 3542 uiop->uio_offset += dp->d_reclen; 3543 uiop->uio_iov->iov_base = 3544 (char *)uiop->uio_iov->iov_base + dp->d_reclen; 3545 uiop->uio_iov->iov_len -= dp->d_reclen; 3546 } 3547 NFSREADDIRPLUS_ATTRBIT(&attrbits); 3548 if (gotmnton) 3549 NFSSETBIT_ATTRBIT(&attrbits, 3550 NFSATTRBIT_MOUNTEDONFILEID); 3551 if (!NFSISSET_ATTRBIT(&dnp->n_vattr.na_suppattr, 3552 NFSATTRBIT_TIMECREATE)) 3553 NFSCLRBIT_ATTRBIT(&attrbits, NFSATTRBIT_TIMECREATE); 3554 } 3555 3556 /* 3557 * Loop around doing readdir rpc's of size nm_readdirsize. 3558 * The stopping criteria is EOF or buffer full. 3559 */ 3560 while (more_dirs && bigenough) { 3561 *attrflagp = 0; 3562 NFSCL_REQSTART(nd, NFSPROC_READDIRPLUS, vp); 3563 NFSM_BUILD(tl, u_int32_t *, 6 * NFSX_UNSIGNED); 3564 *tl++ = cookie.lval[0]; 3565 *tl++ = cookie.lval[1]; 3566 if (cookie.qval == 0) { 3567 *tl++ = 0; 3568 *tl++ = 0; 3569 } else { 3570 NFSLOCKNODE(dnp); 3571 *tl++ = dnp->n_cookieverf.nfsuquad[0]; 3572 *tl++ = dnp->n_cookieverf.nfsuquad[1]; 3573 NFSUNLOCKNODE(dnp); 3574 } 3575 *tl++ = txdr_unsigned(nmp->nm_readdirsize); 3576 *tl = txdr_unsigned(nmp->nm_readdirsize); 3577 if (nd->nd_flag & ND_NFSV4) { 3578 (void) nfsrv_putattrbit(nd, &attrbits); 3579 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 3580 *tl = txdr_unsigned(NFSV4OP_GETATTR); 3581 (void) nfsrv_putattrbit(nd, &dattrbits); 3582 } 3583 error = nfscl_request(nd, vp, p, cred, stuff); 3584 if (error) 3585 return (error); 3586 if (nd->nd_flag & ND_NFSV3) 3587 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 3588 if (nd->nd_repstat || error) { 3589 if (!error) 3590 error = nd->nd_repstat; 3591 goto nfsmout; 3592 } 3593 if ((nd->nd_flag & ND_NFSV3) != 0 && *attrflagp != 0) 3594 dctime = nap->na_ctime; 3595 NFSM_DISSECT(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 3596 NFSLOCKNODE(dnp); 3597 dnp->n_cookieverf.nfsuquad[0] = *tl++; 3598 dnp->n_cookieverf.nfsuquad[1] = *tl++; 3599 NFSUNLOCKNODE(dnp); 3600 more_dirs = fxdr_unsigned(int, *tl); 3601 if (!more_dirs) 3602 tryformoredirs = 0; 3603 3604 /* loop through the dir entries, doctoring them to 4bsd form */ 3605 while (more_dirs && bigenough) { 3606 NFSM_DISSECT(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 3607 if (nd->nd_flag & ND_NFSV4) { 3608 ncookie.lval[0] = *tl++; 3609 ncookie.lval[1] = *tl++; 3610 } else { 3611 fileno = fxdr_hyper(tl); 3612 tl += 2; 3613 } 3614 len = fxdr_unsigned(int, *tl); 3615 if (len <= 0 || len > NFS_MAXNAMLEN) { 3616 error = EBADRPC; 3617 goto nfsmout; 3618 } 3619 tlen = roundup2(len, 8); 3620 if (tlen == len) 3621 tlen += 8; /* To ensure null termination. */ 3622 left = DIRBLKSIZ - blksiz; 3623 if (_GENERIC_DIRLEN(len) + NFSX_HYPER > left) { 3624 NFSBZERO(uiop->uio_iov->iov_base, left); 3625 dp->d_reclen += left; 3626 uiop->uio_iov->iov_base = 3627 (char *)uiop->uio_iov->iov_base + left; 3628 uiop->uio_iov->iov_len -= left; 3629 uiop->uio_resid -= left; 3630 uiop->uio_offset += left; 3631 blksiz = 0; 3632 } 3633 if (_GENERIC_DIRLEN(len) + NFSX_HYPER > 3634 uiop->uio_resid) 3635 bigenough = 0; 3636 if (bigenough) { 3637 dp = (struct dirent *)uiop->uio_iov->iov_base; 3638 dp->d_pad0 = dp->d_pad1 = 0; 3639 dp->d_off = 0; 3640 dp->d_namlen = len; 3641 dp->d_reclen = _GENERIC_DIRLEN(len) + 3642 NFSX_HYPER; 3643 dp->d_type = DT_UNKNOWN; 3644 blksiz += dp->d_reclen; 3645 if (blksiz == DIRBLKSIZ) 3646 blksiz = 0; 3647 uiop->uio_resid -= DIRHDSIZ; 3648 uiop->uio_offset += DIRHDSIZ; 3649 uiop->uio_iov->iov_base = 3650 (char *)uiop->uio_iov->iov_base + DIRHDSIZ; 3651 uiop->uio_iov->iov_len -= DIRHDSIZ; 3652 cnp->cn_nameptr = uiop->uio_iov->iov_base; 3653 cnp->cn_namelen = len; 3654 NFSCNHASHZERO(cnp); 3655 error = nfsm_mbufuio(nd, uiop, len); 3656 if (error) 3657 goto nfsmout; 3658 cp = uiop->uio_iov->iov_base; 3659 tlen -= len; 3660 NFSBZERO(cp, tlen); 3661 cp += tlen; /* points to cookie storage */ 3662 tl2 = (u_int32_t *)cp; 3663 if (len == 2 && cnp->cn_nameptr[0] == '.' && 3664 cnp->cn_nameptr[1] == '.') 3665 isdotdot = 1; 3666 else 3667 isdotdot = 0; 3668 uiop->uio_iov->iov_base = 3669 (char *)uiop->uio_iov->iov_base + tlen + 3670 NFSX_HYPER; 3671 uiop->uio_iov->iov_len -= tlen + NFSX_HYPER; 3672 uiop->uio_resid -= tlen + NFSX_HYPER; 3673 uiop->uio_offset += (tlen + NFSX_HYPER); 3674 } else { 3675 error = nfsm_advance(nd, NFSM_RNDUP(len), -1); 3676 if (error) 3677 goto nfsmout; 3678 } 3679 nfhp = NULL; 3680 if (nd->nd_flag & ND_NFSV3) { 3681 NFSM_DISSECT(tl, u_int32_t *, 3*NFSX_UNSIGNED); 3682 ncookie.lval[0] = *tl++; 3683 ncookie.lval[1] = *tl++; 3684 attrflag = fxdr_unsigned(int, *tl); 3685 if (attrflag) { 3686 error = nfsm_loadattr(nd, &nfsva); 3687 if (error) 3688 goto nfsmout; 3689 } 3690 NFSM_DISSECT(tl,u_int32_t *,NFSX_UNSIGNED); 3691 if (*tl) { 3692 error = nfsm_getfh(nd, &nfhp); 3693 if (error) 3694 goto nfsmout; 3695 } 3696 if (!attrflag && nfhp != NULL) { 3697 free(nfhp, M_NFSFH); 3698 nfhp = NULL; 3699 } 3700 } else { 3701 rderr = 0; 3702 nfsva.na_mntonfileno = 0xffffffff; 3703 error = nfsv4_loadattr(nd, NULL, &nfsva, &nfhp, 3704 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0, 3705 NULL, NULL, &rderr, p, cred); 3706 if (error) 3707 goto nfsmout; 3708 } 3709 3710 if (bigenough) { 3711 if (nd->nd_flag & ND_NFSV4) { 3712 if (rderr) { 3713 dp->d_fileno = 0; 3714 } else if (gotmnton) { 3715 if (nfsva.na_mntonfileno != 0xffffffff) 3716 dp->d_fileno = nfsva.na_mntonfileno; 3717 else 3718 dp->d_fileno = nfsva.na_fileid; 3719 } else if (nfsva.na_filesid[0] == 3720 dnp->n_vattr.na_filesid[0] && 3721 nfsva.na_filesid[1] == 3722 dnp->n_vattr.na_filesid[1]) { 3723 dp->d_fileno = nfsva.na_fileid; 3724 } else { 3725 do { 3726 fakefileno--; 3727 } while (fakefileno == 3728 nfsva.na_fileid); 3729 dp->d_fileno = fakefileno; 3730 } 3731 } else { 3732 dp->d_fileno = fileno; 3733 } 3734 *tl2++ = cookiep->nfsuquad[0] = cookie.lval[0] = 3735 ncookie.lval[0]; 3736 *tl2 = cookiep->nfsuquad[1] = cookie.lval[1] = 3737 ncookie.lval[1]; 3738 3739 if (nfhp != NULL) { 3740 if (NFSRV_CMPFH(nfhp->nfh_fh, nfhp->nfh_len, 3741 dnp->n_fhp->nfh_fh, dnp->n_fhp->nfh_len)) { 3742 VREF(vp); 3743 newvp = vp; 3744 unlocknewvp = 0; 3745 free(nfhp, M_NFSFH); 3746 np = dnp; 3747 } else if (isdotdot != 0) { 3748 /* 3749 * Skip doing a nfscl_nget() call for "..". 3750 * There's a race between acquiring the nfs 3751 * node here and lookups that look for the 3752 * directory being read (in the parent). 3753 * It would try to get a lock on ".." here, 3754 * owning the lock on the directory being 3755 * read. Lookup will hold the lock on ".." 3756 * and try to acquire the lock on the 3757 * directory being read. 3758 * If the directory is unlocked/relocked, 3759 * then there is a LOR with the buflock 3760 * vp is relocked. 3761 */ 3762 free(nfhp, M_NFSFH); 3763 } else { 3764 error = nfscl_nget(vp->v_mount, vp, 3765 nfhp, cnp, p, &np, NULL, LK_EXCLUSIVE); 3766 if (!error) { 3767 newvp = NFSTOV(np); 3768 unlocknewvp = 1; 3769 } 3770 } 3771 nfhp = NULL; 3772 if (newvp != NULLVP) { 3773 error = nfscl_loadattrcache(&newvp, 3774 &nfsva, NULL, NULL, 0, 0); 3775 if (error) { 3776 if (unlocknewvp) 3777 vput(newvp); 3778 else 3779 vrele(newvp); 3780 goto nfsmout; 3781 } 3782 dp->d_type = 3783 vtonfs_dtype(np->n_vattr.na_type); 3784 ndp->ni_vp = newvp; 3785 NFSCNHASH(cnp, HASHINIT); 3786 if (cnp->cn_namelen <= NCHNAMLEN && 3787 ndp->ni_dvp != ndp->ni_vp && 3788 (newvp->v_type != VDIR || 3789 dctime.tv_sec != 0)) { 3790 cache_enter_time(ndp->ni_dvp, 3791 ndp->ni_vp, cnp, 3792 &nfsva.na_ctime, 3793 newvp->v_type != VDIR ? NULL : 3794 &dctime); 3795 } 3796 if (unlocknewvp) 3797 vput(newvp); 3798 else 3799 vrele(newvp); 3800 newvp = NULLVP; 3801 } 3802 } 3803 } else if (nfhp != NULL) { 3804 free(nfhp, M_NFSFH); 3805 } 3806 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 3807 more_dirs = fxdr_unsigned(int, *tl); 3808 } 3809 /* 3810 * If at end of rpc data, get the eof boolean 3811 */ 3812 if (!more_dirs) { 3813 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 3814 eof = fxdr_unsigned(int, *tl); 3815 if (tryformoredirs) 3816 more_dirs = !eof; 3817 if (nd->nd_flag & ND_NFSV4) { 3818 error = nfscl_postop_attr(nd, nap, attrflagp, 3819 stuff); 3820 if (error) 3821 goto nfsmout; 3822 } 3823 } 3824 m_freem(nd->nd_mrep); 3825 nd->nd_mrep = NULL; 3826 } 3827 /* 3828 * Fill last record, iff any, out to a multiple of DIRBLKSIZ 3829 * by increasing d_reclen for the last record. 3830 */ 3831 if (blksiz > 0) { 3832 left = DIRBLKSIZ - blksiz; 3833 NFSBZERO(uiop->uio_iov->iov_base, left); 3834 dp->d_reclen += left; 3835 uiop->uio_iov->iov_base = (char *)uiop->uio_iov->iov_base + 3836 left; 3837 uiop->uio_iov->iov_len -= left; 3838 uiop->uio_resid -= left; 3839 uiop->uio_offset += left; 3840 } 3841 3842 /* 3843 * If returning no data, assume end of file. 3844 * If not bigenough, return not end of file, since you aren't 3845 * returning all the data 3846 * Otherwise, return the eof flag from the server. 3847 */ 3848 if (eofp != NULL) { 3849 if (tresid == uiop->uio_resid) 3850 *eofp = 1; 3851 else if (!bigenough) 3852 *eofp = 0; 3853 else 3854 *eofp = eof; 3855 } 3856 3857 /* 3858 * Add extra empty records to any remaining DIRBLKSIZ chunks. 3859 */ 3860 while (uiop->uio_resid > 0 && uiop->uio_resid != tresid) { 3861 dp = (struct dirent *)uiop->uio_iov->iov_base; 3862 NFSBZERO(dp, DIRBLKSIZ); 3863 dp->d_type = DT_UNKNOWN; 3864 tl = (u_int32_t *)&dp->d_name[4]; 3865 *tl++ = cookie.lval[0]; 3866 *tl = cookie.lval[1]; 3867 dp->d_reclen = DIRBLKSIZ; 3868 uiop->uio_iov->iov_base = (char *)uiop->uio_iov->iov_base + 3869 DIRBLKSIZ; 3870 uiop->uio_iov->iov_len -= DIRBLKSIZ; 3871 uiop->uio_resid -= DIRBLKSIZ; 3872 uiop->uio_offset += DIRBLKSIZ; 3873 } 3874 3875 nfsmout: 3876 if (nd->nd_mrep != NULL) 3877 m_freem(nd->nd_mrep); 3878 return (error); 3879 } 3880 #endif /* !APPLE */ 3881 3882 /* 3883 * Nfs commit rpc 3884 */ 3885 int 3886 nfsrpc_commit(vnode_t vp, u_quad_t offset, int cnt, struct ucred *cred, 3887 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff) 3888 { 3889 u_int32_t *tl; 3890 struct nfsrv_descript nfsd, *nd = &nfsd; 3891 nfsattrbit_t attrbits; 3892 int error; 3893 struct nfsmount *nmp = VFSTONFS(vp->v_mount); 3894 3895 *attrflagp = 0; 3896 NFSCL_REQSTART(nd, NFSPROC_COMMIT, vp); 3897 NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 3898 txdr_hyper(offset, tl); 3899 tl += 2; 3900 *tl = txdr_unsigned(cnt); 3901 if (nd->nd_flag & ND_NFSV4) { 3902 /* 3903 * And do a Getattr op. 3904 */ 3905 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 3906 *tl = txdr_unsigned(NFSV4OP_GETATTR); 3907 NFSGETATTR_ATTRBIT(&attrbits); 3908 (void) nfsrv_putattrbit(nd, &attrbits); 3909 } 3910 error = nfscl_request(nd, vp, p, cred, stuff); 3911 if (error) 3912 return (error); 3913 error = nfscl_wcc_data(nd, vp, nap, attrflagp, NULL, stuff); 3914 if (!error && !nd->nd_repstat) { 3915 NFSM_DISSECT(tl, u_int32_t *, NFSX_VERF); 3916 NFSLOCKMNT(nmp); 3917 if (NFSBCMP(nmp->nm_verf, tl, NFSX_VERF)) { 3918 NFSBCOPY(tl, nmp->nm_verf, NFSX_VERF); 3919 nd->nd_repstat = NFSERR_STALEWRITEVERF; 3920 } 3921 NFSUNLOCKMNT(nmp); 3922 if (nd->nd_flag & ND_NFSV4) 3923 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 3924 } 3925 nfsmout: 3926 if (!error && nd->nd_repstat) 3927 error = nd->nd_repstat; 3928 m_freem(nd->nd_mrep); 3929 return (error); 3930 } 3931 3932 /* 3933 * NFS byte range lock rpc. 3934 * (Mostly just calls one of the three lower level RPC routines.) 3935 */ 3936 int 3937 nfsrpc_advlock(vnode_t vp, off_t size, int op, struct flock *fl, 3938 int reclaim, struct ucred *cred, NFSPROC_T *p, void *id, int flags) 3939 { 3940 struct nfscllockowner *lp; 3941 struct nfsclclient *clp; 3942 struct nfsfh *nfhp; 3943 struct nfsrv_descript nfsd, *nd = &nfsd; 3944 struct nfsmount *nmp = VFSTONFS(vp->v_mount); 3945 u_int64_t off, len; 3946 off_t start, end; 3947 u_int32_t clidrev = 0; 3948 int error = 0, newone = 0, expireret = 0, retrycnt, donelocally; 3949 int callcnt, dorpc; 3950 3951 /* 3952 * Convert the flock structure into a start and end and do POSIX 3953 * bounds checking. 3954 */ 3955 switch (fl->l_whence) { 3956 case SEEK_SET: 3957 case SEEK_CUR: 3958 /* 3959 * Caller is responsible for adding any necessary offset 3960 * when SEEK_CUR is used. 3961 */ 3962 start = fl->l_start; 3963 off = fl->l_start; 3964 break; 3965 case SEEK_END: 3966 start = size + fl->l_start; 3967 off = size + fl->l_start; 3968 break; 3969 default: 3970 return (EINVAL); 3971 } 3972 if (start < 0) 3973 return (EINVAL); 3974 if (fl->l_len != 0) { 3975 end = start + fl->l_len - 1; 3976 if (end < start) 3977 return (EINVAL); 3978 } 3979 3980 len = fl->l_len; 3981 if (len == 0) 3982 len = NFS64BITSSET; 3983 retrycnt = 0; 3984 do { 3985 nd->nd_repstat = 0; 3986 if (op == F_GETLK) { 3987 error = nfscl_getcl(vp->v_mount, cred, p, 1, &clp); 3988 if (error) 3989 return (error); 3990 error = nfscl_lockt(vp, clp, off, len, fl, p, id, flags); 3991 if (!error) { 3992 clidrev = clp->nfsc_clientidrev; 3993 error = nfsrpc_lockt(nd, vp, clp, off, len, fl, cred, 3994 p, id, flags); 3995 } else if (error == -1) { 3996 error = 0; 3997 } 3998 nfscl_clientrelease(clp); 3999 } else if (op == F_UNLCK && fl->l_type == F_UNLCK) { 4000 /* 4001 * We must loop around for all lockowner cases. 4002 */ 4003 callcnt = 0; 4004 error = nfscl_getcl(vp->v_mount, cred, p, 1, &clp); 4005 if (error) 4006 return (error); 4007 do { 4008 error = nfscl_relbytelock(vp, off, len, cred, p, callcnt, 4009 clp, id, flags, &lp, &dorpc); 4010 /* 4011 * If it returns a NULL lp, we're done. 4012 */ 4013 if (lp == NULL) { 4014 if (callcnt == 0) 4015 nfscl_clientrelease(clp); 4016 else 4017 nfscl_releasealllocks(clp, vp, p, id, flags); 4018 return (error); 4019 } 4020 if (nmp->nm_clp != NULL) 4021 clidrev = nmp->nm_clp->nfsc_clientidrev; 4022 else 4023 clidrev = 0; 4024 /* 4025 * If the server doesn't support Posix lock semantics, 4026 * only allow locks on the entire file, since it won't 4027 * handle overlapping byte ranges. 4028 * There might still be a problem when a lock 4029 * upgrade/downgrade (read<->write) occurs, since the 4030 * server "might" expect an unlock first? 4031 */ 4032 if (dorpc && (lp->nfsl_open->nfso_posixlock || 4033 (off == 0 && len == NFS64BITSSET))) { 4034 /* 4035 * Since the lock records will go away, we must 4036 * wait for grace and delay here. 4037 */ 4038 do { 4039 error = nfsrpc_locku(nd, nmp, lp, off, len, 4040 NFSV4LOCKT_READ, cred, p, 0); 4041 if ((nd->nd_repstat == NFSERR_GRACE || 4042 nd->nd_repstat == NFSERR_DELAY) && 4043 error == 0) 4044 (void) nfs_catnap(PZERO, (int)nd->nd_repstat, 4045 "nfs_advlock"); 4046 } while ((nd->nd_repstat == NFSERR_GRACE || 4047 nd->nd_repstat == NFSERR_DELAY) && error == 0); 4048 } 4049 callcnt++; 4050 } while (error == 0 && nd->nd_repstat == 0); 4051 nfscl_releasealllocks(clp, vp, p, id, flags); 4052 } else if (op == F_SETLK) { 4053 error = nfscl_getbytelock(vp, off, len, fl->l_type, cred, p, 4054 NULL, 0, id, flags, NULL, NULL, &lp, &newone, &donelocally); 4055 if (error || donelocally) { 4056 return (error); 4057 } 4058 if (nmp->nm_clp != NULL) 4059 clidrev = nmp->nm_clp->nfsc_clientidrev; 4060 else 4061 clidrev = 0; 4062 nfhp = VTONFS(vp)->n_fhp; 4063 if (!lp->nfsl_open->nfso_posixlock && 4064 (off != 0 || len != NFS64BITSSET)) { 4065 error = EINVAL; 4066 } else { 4067 error = nfsrpc_lock(nd, nmp, vp, nfhp->nfh_fh, 4068 nfhp->nfh_len, lp, newone, reclaim, off, 4069 len, fl->l_type, cred, p, 0); 4070 } 4071 if (!error) 4072 error = nd->nd_repstat; 4073 nfscl_lockrelease(lp, error, newone); 4074 } else { 4075 error = EINVAL; 4076 } 4077 if (!error) 4078 error = nd->nd_repstat; 4079 if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 4080 error == NFSERR_STALEDONTRECOVER || 4081 error == NFSERR_STALECLIENTID || error == NFSERR_DELAY || 4082 error == NFSERR_BADSESSION) { 4083 (void) nfs_catnap(PZERO, error, "nfs_advlock"); 4084 } else if ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) 4085 && clidrev != 0) { 4086 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p); 4087 retrycnt++; 4088 } 4089 } while (error == NFSERR_GRACE || 4090 error == NFSERR_STALECLIENTID || error == NFSERR_DELAY || 4091 error == NFSERR_STALEDONTRECOVER || error == NFSERR_STALESTATEID || 4092 error == NFSERR_BADSESSION || 4093 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) && 4094 expireret == 0 && clidrev != 0 && retrycnt < 4)); 4095 if (error && retrycnt >= 4) 4096 error = EIO; 4097 return (error); 4098 } 4099 4100 /* 4101 * The lower level routine for the LockT case. 4102 */ 4103 int 4104 nfsrpc_lockt(struct nfsrv_descript *nd, vnode_t vp, 4105 struct nfsclclient *clp, u_int64_t off, u_int64_t len, struct flock *fl, 4106 struct ucred *cred, NFSPROC_T *p, void *id, int flags) 4107 { 4108 u_int32_t *tl; 4109 int error, type, size; 4110 uint8_t own[NFSV4CL_LOCKNAMELEN + NFSX_V4FHMAX]; 4111 struct nfsnode *np; 4112 struct nfsmount *nmp; 4113 struct nfsclsession *tsep; 4114 4115 nmp = VFSTONFS(vp->v_mount); 4116 NFSCL_REQSTART(nd, NFSPROC_LOCKT, vp); 4117 NFSM_BUILD(tl, u_int32_t *, 7 * NFSX_UNSIGNED); 4118 if (fl->l_type == F_RDLCK) 4119 *tl++ = txdr_unsigned(NFSV4LOCKT_READ); 4120 else 4121 *tl++ = txdr_unsigned(NFSV4LOCKT_WRITE); 4122 txdr_hyper(off, tl); 4123 tl += 2; 4124 txdr_hyper(len, tl); 4125 tl += 2; 4126 tsep = nfsmnt_mdssession(nmp); 4127 *tl++ = tsep->nfsess_clientid.lval[0]; 4128 *tl = tsep->nfsess_clientid.lval[1]; 4129 nfscl_filllockowner(id, own, flags); 4130 np = VTONFS(vp); 4131 NFSBCOPY(np->n_fhp->nfh_fh, &own[NFSV4CL_LOCKNAMELEN], 4132 np->n_fhp->nfh_len); 4133 (void)nfsm_strtom(nd, own, NFSV4CL_LOCKNAMELEN + np->n_fhp->nfh_len); 4134 error = nfscl_request(nd, vp, p, cred, NULL); 4135 if (error) 4136 return (error); 4137 if (nd->nd_repstat == 0) { 4138 fl->l_type = F_UNLCK; 4139 } else if (nd->nd_repstat == NFSERR_DENIED) { 4140 nd->nd_repstat = 0; 4141 fl->l_whence = SEEK_SET; 4142 NFSM_DISSECT(tl, u_int32_t *, 8 * NFSX_UNSIGNED); 4143 fl->l_start = fxdr_hyper(tl); 4144 tl += 2; 4145 len = fxdr_hyper(tl); 4146 tl += 2; 4147 if (len == NFS64BITSSET) 4148 fl->l_len = 0; 4149 else 4150 fl->l_len = len; 4151 type = fxdr_unsigned(int, *tl++); 4152 if (type == NFSV4LOCKT_WRITE) 4153 fl->l_type = F_WRLCK; 4154 else 4155 fl->l_type = F_RDLCK; 4156 /* 4157 * XXX For now, I have no idea what to do with the 4158 * conflicting lock_owner, so I'll just set the pid == 0 4159 * and skip over the lock_owner. 4160 */ 4161 fl->l_pid = (pid_t)0; 4162 tl += 2; 4163 size = fxdr_unsigned(int, *tl); 4164 if (size < 0 || size > NFSV4_OPAQUELIMIT) 4165 error = EBADRPC; 4166 if (!error) 4167 error = nfsm_advance(nd, NFSM_RNDUP(size), -1); 4168 } else if (nd->nd_repstat == NFSERR_STALECLIENTID) 4169 nfscl_initiate_recovery(clp); 4170 nfsmout: 4171 m_freem(nd->nd_mrep); 4172 return (error); 4173 } 4174 4175 /* 4176 * Lower level function that performs the LockU RPC. 4177 */ 4178 static int 4179 nfsrpc_locku(struct nfsrv_descript *nd, struct nfsmount *nmp, 4180 struct nfscllockowner *lp, u_int64_t off, u_int64_t len, 4181 u_int32_t type, struct ucred *cred, NFSPROC_T *p, int syscred) 4182 { 4183 u_int32_t *tl; 4184 int error; 4185 4186 nfscl_reqstart(nd, NFSPROC_LOCKU, nmp, lp->nfsl_open->nfso_fh, 4187 lp->nfsl_open->nfso_fhlen, NULL, NULL, 0, 0); 4188 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID + 6 * NFSX_UNSIGNED); 4189 *tl++ = txdr_unsigned(type); 4190 *tl = txdr_unsigned(lp->nfsl_seqid); 4191 if (nfstest_outofseq && 4192 (arc4random() % nfstest_outofseq) == 0) 4193 *tl = txdr_unsigned(lp->nfsl_seqid + 1); 4194 tl++; 4195 if (NFSHASNFSV4N(nmp)) 4196 *tl++ = 0; 4197 else 4198 *tl++ = lp->nfsl_stateid.seqid; 4199 *tl++ = lp->nfsl_stateid.other[0]; 4200 *tl++ = lp->nfsl_stateid.other[1]; 4201 *tl++ = lp->nfsl_stateid.other[2]; 4202 txdr_hyper(off, tl); 4203 tl += 2; 4204 txdr_hyper(len, tl); 4205 if (syscred) 4206 nd->nd_flag |= ND_USEGSSNAME; 4207 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 4208 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4209 NFSCL_INCRSEQID(lp->nfsl_seqid, nd); 4210 if (error) 4211 return (error); 4212 if (nd->nd_repstat == 0) { 4213 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID); 4214 lp->nfsl_stateid.seqid = *tl++; 4215 lp->nfsl_stateid.other[0] = *tl++; 4216 lp->nfsl_stateid.other[1] = *tl++; 4217 lp->nfsl_stateid.other[2] = *tl; 4218 } else if (nd->nd_repstat == NFSERR_STALESTATEID) 4219 nfscl_initiate_recovery(lp->nfsl_open->nfso_own->nfsow_clp); 4220 nfsmout: 4221 m_freem(nd->nd_mrep); 4222 return (error); 4223 } 4224 4225 /* 4226 * The actual Lock RPC. 4227 */ 4228 int 4229 nfsrpc_lock(struct nfsrv_descript *nd, struct nfsmount *nmp, vnode_t vp, 4230 u_int8_t *nfhp, int fhlen, struct nfscllockowner *lp, int newone, 4231 int reclaim, u_int64_t off, u_int64_t len, short type, struct ucred *cred, 4232 NFSPROC_T *p, int syscred) 4233 { 4234 u_int32_t *tl; 4235 int error, size; 4236 uint8_t own[NFSV4CL_LOCKNAMELEN + NFSX_V4FHMAX]; 4237 struct nfsclsession *tsep; 4238 4239 nfscl_reqstart(nd, NFSPROC_LOCK, nmp, nfhp, fhlen, NULL, NULL, 0, 0); 4240 NFSM_BUILD(tl, u_int32_t *, 7 * NFSX_UNSIGNED); 4241 if (type == F_RDLCK) 4242 *tl++ = txdr_unsigned(NFSV4LOCKT_READ); 4243 else 4244 *tl++ = txdr_unsigned(NFSV4LOCKT_WRITE); 4245 *tl++ = txdr_unsigned(reclaim); 4246 txdr_hyper(off, tl); 4247 tl += 2; 4248 txdr_hyper(len, tl); 4249 tl += 2; 4250 if (newone) { 4251 *tl = newnfs_true; 4252 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID + 4253 2 * NFSX_UNSIGNED + NFSX_HYPER); 4254 *tl++ = txdr_unsigned(lp->nfsl_open->nfso_own->nfsow_seqid); 4255 if (NFSHASNFSV4N(nmp)) 4256 *tl++ = 0; 4257 else 4258 *tl++ = lp->nfsl_open->nfso_stateid.seqid; 4259 *tl++ = lp->nfsl_open->nfso_stateid.other[0]; 4260 *tl++ = lp->nfsl_open->nfso_stateid.other[1]; 4261 *tl++ = lp->nfsl_open->nfso_stateid.other[2]; 4262 *tl++ = txdr_unsigned(lp->nfsl_seqid); 4263 tsep = nfsmnt_mdssession(nmp); 4264 *tl++ = tsep->nfsess_clientid.lval[0]; 4265 *tl = tsep->nfsess_clientid.lval[1]; 4266 NFSBCOPY(lp->nfsl_owner, own, NFSV4CL_LOCKNAMELEN); 4267 NFSBCOPY(nfhp, &own[NFSV4CL_LOCKNAMELEN], fhlen); 4268 (void)nfsm_strtom(nd, own, NFSV4CL_LOCKNAMELEN + fhlen); 4269 } else { 4270 *tl = newnfs_false; 4271 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID + NFSX_UNSIGNED); 4272 if (NFSHASNFSV4N(nmp)) 4273 *tl++ = 0; 4274 else 4275 *tl++ = lp->nfsl_stateid.seqid; 4276 *tl++ = lp->nfsl_stateid.other[0]; 4277 *tl++ = lp->nfsl_stateid.other[1]; 4278 *tl++ = lp->nfsl_stateid.other[2]; 4279 *tl = txdr_unsigned(lp->nfsl_seqid); 4280 if (nfstest_outofseq && 4281 (arc4random() % nfstest_outofseq) == 0) 4282 *tl = txdr_unsigned(lp->nfsl_seqid + 1); 4283 } 4284 if (syscred) 4285 nd->nd_flag |= ND_USEGSSNAME; 4286 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, vp, p, cred, 4287 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4288 if (error) 4289 return (error); 4290 if (newone) 4291 NFSCL_INCRSEQID(lp->nfsl_open->nfso_own->nfsow_seqid, nd); 4292 NFSCL_INCRSEQID(lp->nfsl_seqid, nd); 4293 if (nd->nd_repstat == 0) { 4294 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID); 4295 lp->nfsl_stateid.seqid = *tl++; 4296 lp->nfsl_stateid.other[0] = *tl++; 4297 lp->nfsl_stateid.other[1] = *tl++; 4298 lp->nfsl_stateid.other[2] = *tl; 4299 } else if (nd->nd_repstat == NFSERR_DENIED) { 4300 NFSM_DISSECT(tl, u_int32_t *, 8 * NFSX_UNSIGNED); 4301 size = fxdr_unsigned(int, *(tl + 7)); 4302 if (size < 0 || size > NFSV4_OPAQUELIMIT) 4303 error = EBADRPC; 4304 if (!error) 4305 error = nfsm_advance(nd, NFSM_RNDUP(size), -1); 4306 } else if (nd->nd_repstat == NFSERR_STALESTATEID) 4307 nfscl_initiate_recovery(lp->nfsl_open->nfso_own->nfsow_clp); 4308 nfsmout: 4309 m_freem(nd->nd_mrep); 4310 return (error); 4311 } 4312 4313 /* 4314 * nfs statfs rpc 4315 * (always called with the vp for the mount point) 4316 */ 4317 int 4318 nfsrpc_statfs(vnode_t vp, struct nfsstatfs *sbp, struct nfsfsinfo *fsp, 4319 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, 4320 void *stuff) 4321 { 4322 u_int32_t *tl = NULL; 4323 struct nfsrv_descript nfsd, *nd = &nfsd; 4324 struct nfsmount *nmp; 4325 nfsattrbit_t attrbits; 4326 int error; 4327 4328 *attrflagp = 0; 4329 nmp = VFSTONFS(vp->v_mount); 4330 if (NFSHASNFSV4(nmp)) { 4331 /* 4332 * For V4, you actually do a getattr. 4333 */ 4334 NFSCL_REQSTART(nd, NFSPROC_GETATTR, vp); 4335 NFSSTATFS_GETATTRBIT(&attrbits); 4336 (void) nfsrv_putattrbit(nd, &attrbits); 4337 nd->nd_flag |= ND_USEGSSNAME; 4338 error = nfscl_request(nd, vp, p, cred, stuff); 4339 if (error) 4340 return (error); 4341 if (nd->nd_repstat == 0) { 4342 error = nfsv4_loadattr(nd, NULL, nap, NULL, NULL, 0, 4343 NULL, NULL, sbp, fsp, NULL, 0, NULL, NULL, NULL, p, 4344 cred); 4345 if (!error) { 4346 nmp->nm_fsid[0] = nap->na_filesid[0]; 4347 nmp->nm_fsid[1] = nap->na_filesid[1]; 4348 NFSSETHASSETFSID(nmp); 4349 *attrflagp = 1; 4350 } 4351 } else { 4352 error = nd->nd_repstat; 4353 } 4354 if (error) 4355 goto nfsmout; 4356 } else { 4357 NFSCL_REQSTART(nd, NFSPROC_FSSTAT, vp); 4358 error = nfscl_request(nd, vp, p, cred, stuff); 4359 if (error) 4360 return (error); 4361 if (nd->nd_flag & ND_NFSV3) { 4362 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 4363 if (error) 4364 goto nfsmout; 4365 } 4366 if (nd->nd_repstat) { 4367 error = nd->nd_repstat; 4368 goto nfsmout; 4369 } 4370 NFSM_DISSECT(tl, u_int32_t *, 4371 NFSX_STATFS(nd->nd_flag & ND_NFSV3)); 4372 } 4373 if (NFSHASNFSV3(nmp)) { 4374 sbp->sf_tbytes = fxdr_hyper(tl); tl += 2; 4375 sbp->sf_fbytes = fxdr_hyper(tl); tl += 2; 4376 sbp->sf_abytes = fxdr_hyper(tl); tl += 2; 4377 sbp->sf_tfiles = fxdr_hyper(tl); tl += 2; 4378 sbp->sf_ffiles = fxdr_hyper(tl); tl += 2; 4379 sbp->sf_afiles = fxdr_hyper(tl); tl += 2; 4380 sbp->sf_invarsec = fxdr_unsigned(u_int32_t, *tl); 4381 } else if (NFSHASNFSV4(nmp) == 0) { 4382 sbp->sf_tsize = fxdr_unsigned(u_int32_t, *tl++); 4383 sbp->sf_bsize = fxdr_unsigned(u_int32_t, *tl++); 4384 sbp->sf_blocks = fxdr_unsigned(u_int32_t, *tl++); 4385 sbp->sf_bfree = fxdr_unsigned(u_int32_t, *tl++); 4386 sbp->sf_bavail = fxdr_unsigned(u_int32_t, *tl); 4387 } 4388 nfsmout: 4389 m_freem(nd->nd_mrep); 4390 return (error); 4391 } 4392 4393 /* 4394 * nfs pathconf rpc 4395 */ 4396 int 4397 nfsrpc_pathconf(vnode_t vp, struct nfsv3_pathconf *pc, 4398 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, 4399 void *stuff) 4400 { 4401 struct nfsrv_descript nfsd, *nd = &nfsd; 4402 struct nfsmount *nmp; 4403 u_int32_t *tl; 4404 nfsattrbit_t attrbits; 4405 int error; 4406 4407 *attrflagp = 0; 4408 nmp = VFSTONFS(vp->v_mount); 4409 if (NFSHASNFSV4(nmp)) { 4410 /* 4411 * For V4, you actually do a getattr. 4412 */ 4413 NFSCL_REQSTART(nd, NFSPROC_GETATTR, vp); 4414 NFSPATHCONF_GETATTRBIT(&attrbits); 4415 (void) nfsrv_putattrbit(nd, &attrbits); 4416 nd->nd_flag |= ND_USEGSSNAME; 4417 error = nfscl_request(nd, vp, p, cred, stuff); 4418 if (error) 4419 return (error); 4420 if (nd->nd_repstat == 0) { 4421 error = nfsv4_loadattr(nd, NULL, nap, NULL, NULL, 0, 4422 pc, NULL, NULL, NULL, NULL, 0, NULL, NULL, NULL, p, 4423 cred); 4424 if (!error) 4425 *attrflagp = 1; 4426 } else { 4427 error = nd->nd_repstat; 4428 } 4429 } else { 4430 NFSCL_REQSTART(nd, NFSPROC_PATHCONF, vp); 4431 error = nfscl_request(nd, vp, p, cred, stuff); 4432 if (error) 4433 return (error); 4434 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 4435 if (nd->nd_repstat && !error) 4436 error = nd->nd_repstat; 4437 if (!error) { 4438 NFSM_DISSECT(tl, u_int32_t *, NFSX_V3PATHCONF); 4439 pc->pc_linkmax = fxdr_unsigned(u_int32_t, *tl++); 4440 pc->pc_namemax = fxdr_unsigned(u_int32_t, *tl++); 4441 pc->pc_notrunc = fxdr_unsigned(u_int32_t, *tl++); 4442 pc->pc_chownrestricted = 4443 fxdr_unsigned(u_int32_t, *tl++); 4444 pc->pc_caseinsensitive = 4445 fxdr_unsigned(u_int32_t, *tl++); 4446 pc->pc_casepreserving = fxdr_unsigned(u_int32_t, *tl); 4447 } 4448 } 4449 nfsmout: 4450 m_freem(nd->nd_mrep); 4451 return (error); 4452 } 4453 4454 /* 4455 * nfs version 3 fsinfo rpc call 4456 */ 4457 int 4458 nfsrpc_fsinfo(vnode_t vp, struct nfsfsinfo *fsp, struct ucred *cred, 4459 NFSPROC_T *p, struct nfsvattr *nap, int *attrflagp, void *stuff) 4460 { 4461 u_int32_t *tl; 4462 struct nfsrv_descript nfsd, *nd = &nfsd; 4463 int error; 4464 4465 *attrflagp = 0; 4466 NFSCL_REQSTART(nd, NFSPROC_FSINFO, vp); 4467 error = nfscl_request(nd, vp, p, cred, stuff); 4468 if (error) 4469 return (error); 4470 error = nfscl_postop_attr(nd, nap, attrflagp, stuff); 4471 if (nd->nd_repstat && !error) 4472 error = nd->nd_repstat; 4473 if (!error) { 4474 NFSM_DISSECT(tl, u_int32_t *, NFSX_V3FSINFO); 4475 fsp->fs_rtmax = fxdr_unsigned(u_int32_t, *tl++); 4476 fsp->fs_rtpref = fxdr_unsigned(u_int32_t, *tl++); 4477 fsp->fs_rtmult = fxdr_unsigned(u_int32_t, *tl++); 4478 fsp->fs_wtmax = fxdr_unsigned(u_int32_t, *tl++); 4479 fsp->fs_wtpref = fxdr_unsigned(u_int32_t, *tl++); 4480 fsp->fs_wtmult = fxdr_unsigned(u_int32_t, *tl++); 4481 fsp->fs_dtpref = fxdr_unsigned(u_int32_t, *tl++); 4482 fsp->fs_maxfilesize = fxdr_hyper(tl); 4483 tl += 2; 4484 fxdr_nfsv3time(tl, &fsp->fs_timedelta); 4485 tl += 2; 4486 fsp->fs_properties = fxdr_unsigned(u_int32_t, *tl); 4487 } 4488 nfsmout: 4489 m_freem(nd->nd_mrep); 4490 return (error); 4491 } 4492 4493 /* 4494 * This function performs the Renew RPC. 4495 */ 4496 int 4497 nfsrpc_renew(struct nfsclclient *clp, struct nfsclds *dsp, struct ucred *cred, 4498 NFSPROC_T *p) 4499 { 4500 u_int32_t *tl; 4501 struct nfsrv_descript nfsd; 4502 struct nfsrv_descript *nd = &nfsd; 4503 struct nfsmount *nmp; 4504 int error; 4505 struct nfssockreq *nrp; 4506 struct nfsclsession *tsep; 4507 4508 nmp = clp->nfsc_nmp; 4509 if (nmp == NULL) 4510 return (0); 4511 if (dsp == NULL) 4512 nfscl_reqstart(nd, NFSPROC_RENEW, nmp, NULL, 0, NULL, NULL, 0, 4513 0); 4514 else 4515 nfscl_reqstart(nd, NFSPROC_RENEW, nmp, NULL, 0, NULL, 4516 &dsp->nfsclds_sess, 0, 0); 4517 if (!NFSHASNFSV4N(nmp)) { 4518 /* NFSv4.1 just uses a Sequence Op and not a Renew. */ 4519 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 4520 tsep = nfsmnt_mdssession(nmp); 4521 *tl++ = tsep->nfsess_clientid.lval[0]; 4522 *tl = tsep->nfsess_clientid.lval[1]; 4523 } 4524 nrp = NULL; 4525 if (dsp != NULL) 4526 nrp = dsp->nfsclds_sockp; 4527 if (nrp == NULL) 4528 /* If NULL, use the MDS socket. */ 4529 nrp = &nmp->nm_sockreq; 4530 nd->nd_flag |= ND_USEGSSNAME; 4531 if (dsp == NULL) 4532 error = newnfs_request(nd, nmp, NULL, nrp, NULL, p, cred, 4533 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4534 else { 4535 error = newnfs_request(nd, nmp, NULL, nrp, NULL, p, cred, 4536 NFS_PROG, NFS_VER4, NULL, 1, NULL, &dsp->nfsclds_sess); 4537 if (error == ENXIO) 4538 nfscl_cancelreqs(dsp); 4539 } 4540 if (error) 4541 return (error); 4542 error = nd->nd_repstat; 4543 m_freem(nd->nd_mrep); 4544 return (error); 4545 } 4546 4547 /* 4548 * This function performs the Releaselockowner RPC. 4549 */ 4550 int 4551 nfsrpc_rellockown(struct nfsmount *nmp, struct nfscllockowner *lp, 4552 uint8_t *fh, int fhlen, struct ucred *cred, NFSPROC_T *p) 4553 { 4554 struct nfsrv_descript nfsd, *nd = &nfsd; 4555 u_int32_t *tl; 4556 int error; 4557 uint8_t own[NFSV4CL_LOCKNAMELEN + NFSX_V4FHMAX]; 4558 struct nfsclsession *tsep; 4559 4560 if (NFSHASNFSV4N(nmp)) { 4561 /* For NFSv4.1, do a FreeStateID. */ 4562 nfscl_reqstart(nd, NFSPROC_FREESTATEID, nmp, NULL, 0, NULL, 4563 NULL, 0, 0); 4564 nfsm_stateidtom(nd, &lp->nfsl_stateid, NFSSTATEID_PUTSTATEID); 4565 } else { 4566 nfscl_reqstart(nd, NFSPROC_RELEASELCKOWN, nmp, NULL, 0, NULL, 4567 NULL, 0, 0); 4568 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 4569 tsep = nfsmnt_mdssession(nmp); 4570 *tl++ = tsep->nfsess_clientid.lval[0]; 4571 *tl = tsep->nfsess_clientid.lval[1]; 4572 NFSBCOPY(lp->nfsl_owner, own, NFSV4CL_LOCKNAMELEN); 4573 NFSBCOPY(fh, &own[NFSV4CL_LOCKNAMELEN], fhlen); 4574 (void)nfsm_strtom(nd, own, NFSV4CL_LOCKNAMELEN + fhlen); 4575 } 4576 nd->nd_flag |= ND_USEGSSNAME; 4577 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 4578 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4579 if (error) 4580 return (error); 4581 error = nd->nd_repstat; 4582 m_freem(nd->nd_mrep); 4583 return (error); 4584 } 4585 4586 /* 4587 * This function performs the Compound to get the mount pt FH. 4588 */ 4589 int 4590 nfsrpc_getdirpath(struct nfsmount *nmp, u_char *dirpath, struct ucred *cred, 4591 NFSPROC_T *p) 4592 { 4593 u_int32_t *tl; 4594 struct nfsrv_descript nfsd; 4595 struct nfsrv_descript *nd = &nfsd; 4596 u_char *cp, *cp2; 4597 int error, cnt, len, setnil; 4598 u_int32_t *opcntp; 4599 4600 nfscl_reqstart(nd, NFSPROC_PUTROOTFH, nmp, NULL, 0, &opcntp, NULL, 0, 4601 0); 4602 cp = dirpath; 4603 cnt = 0; 4604 do { 4605 setnil = 0; 4606 while (*cp == '/') 4607 cp++; 4608 cp2 = cp; 4609 while (*cp2 != '\0' && *cp2 != '/') 4610 cp2++; 4611 if (*cp2 == '/') { 4612 setnil = 1; 4613 *cp2 = '\0'; 4614 } 4615 if (cp2 != cp) { 4616 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 4617 *tl = txdr_unsigned(NFSV4OP_LOOKUP); 4618 nfsm_strtom(nd, cp, strlen(cp)); 4619 cnt++; 4620 } 4621 if (setnil) 4622 *cp2++ = '/'; 4623 cp = cp2; 4624 } while (*cp != '\0'); 4625 if (NFSHASNFSV4N(nmp)) 4626 /* Has a Sequence Op done by nfscl_reqstart(). */ 4627 *opcntp = txdr_unsigned(3 + cnt); 4628 else 4629 *opcntp = txdr_unsigned(2 + cnt); 4630 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 4631 *tl = txdr_unsigned(NFSV4OP_GETFH); 4632 nd->nd_flag |= ND_USEGSSNAME; 4633 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 4634 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4635 if (error) 4636 return (error); 4637 if (nd->nd_repstat == 0) { 4638 NFSM_DISSECT(tl, u_int32_t *, (3 + 2 * cnt) * NFSX_UNSIGNED); 4639 tl += (2 + 2 * cnt); 4640 if ((len = fxdr_unsigned(int, *tl)) <= 0 || 4641 len > NFSX_FHMAX) { 4642 nd->nd_repstat = NFSERR_BADXDR; 4643 } else { 4644 nd->nd_repstat = nfsrv_mtostr(nd, nmp->nm_fh, len); 4645 if (nd->nd_repstat == 0) 4646 nmp->nm_fhsize = len; 4647 } 4648 } 4649 error = nd->nd_repstat; 4650 nfsmout: 4651 m_freem(nd->nd_mrep); 4652 return (error); 4653 } 4654 4655 /* 4656 * This function performs the Delegreturn RPC. 4657 */ 4658 int 4659 nfsrpc_delegreturn(struct nfscldeleg *dp, struct ucred *cred, 4660 struct nfsmount *nmp, NFSPROC_T *p, int syscred) 4661 { 4662 u_int32_t *tl; 4663 struct nfsrv_descript nfsd; 4664 struct nfsrv_descript *nd = &nfsd; 4665 int error; 4666 4667 nfscl_reqstart(nd, NFSPROC_DELEGRETURN, nmp, dp->nfsdl_fh, 4668 dp->nfsdl_fhlen, NULL, NULL, 0, 0); 4669 NFSM_BUILD(tl, u_int32_t *, NFSX_STATEID); 4670 if (NFSHASNFSV4N(nmp)) 4671 *tl++ = 0; 4672 else 4673 *tl++ = dp->nfsdl_stateid.seqid; 4674 *tl++ = dp->nfsdl_stateid.other[0]; 4675 *tl++ = dp->nfsdl_stateid.other[1]; 4676 *tl = dp->nfsdl_stateid.other[2]; 4677 if (syscred) 4678 nd->nd_flag |= ND_USEGSSNAME; 4679 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 4680 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4681 if (error) 4682 return (error); 4683 error = nd->nd_repstat; 4684 m_freem(nd->nd_mrep); 4685 return (error); 4686 } 4687 4688 /* 4689 * nfs getacl call. 4690 */ 4691 int 4692 nfsrpc_getacl(vnode_t vp, struct ucred *cred, NFSPROC_T *p, 4693 struct acl *aclp, void *stuff) 4694 { 4695 struct nfsrv_descript nfsd, *nd = &nfsd; 4696 int error; 4697 nfsattrbit_t attrbits; 4698 struct nfsmount *nmp = VFSTONFS(vp->v_mount); 4699 4700 if (nfsrv_useacl == 0 || !NFSHASNFSV4(nmp)) 4701 return (EOPNOTSUPP); 4702 NFSCL_REQSTART(nd, NFSPROC_GETACL, vp); 4703 NFSZERO_ATTRBIT(&attrbits); 4704 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_ACL); 4705 (void) nfsrv_putattrbit(nd, &attrbits); 4706 error = nfscl_request(nd, vp, p, cred, stuff); 4707 if (error) 4708 return (error); 4709 if (!nd->nd_repstat) 4710 error = nfsv4_loadattr(nd, vp, NULL, NULL, NULL, 0, NULL, 4711 NULL, NULL, NULL, aclp, 0, NULL, NULL, NULL, p, cred); 4712 else 4713 error = nd->nd_repstat; 4714 m_freem(nd->nd_mrep); 4715 return (error); 4716 } 4717 4718 /* 4719 * nfs setacl call. 4720 */ 4721 int 4722 nfsrpc_setacl(vnode_t vp, struct ucred *cred, NFSPROC_T *p, 4723 struct acl *aclp, void *stuff) 4724 { 4725 int error; 4726 struct nfsmount *nmp = VFSTONFS(vp->v_mount); 4727 4728 if (nfsrv_useacl == 0 || !NFSHASNFSV4(nmp)) 4729 return (EOPNOTSUPP); 4730 error = nfsrpc_setattr(vp, NULL, aclp, cred, p, NULL, NULL, stuff); 4731 return (error); 4732 } 4733 4734 /* 4735 * nfs setacl call. 4736 */ 4737 static int 4738 nfsrpc_setaclrpc(vnode_t vp, struct ucred *cred, NFSPROC_T *p, 4739 struct acl *aclp, nfsv4stateid_t *stateidp, void *stuff) 4740 { 4741 struct nfsrv_descript nfsd, *nd = &nfsd; 4742 int error; 4743 nfsattrbit_t attrbits; 4744 struct nfsmount *nmp = VFSTONFS(vp->v_mount); 4745 4746 if (!NFSHASNFSV4(nmp)) 4747 return (EOPNOTSUPP); 4748 NFSCL_REQSTART(nd, NFSPROC_SETACL, vp); 4749 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID); 4750 NFSZERO_ATTRBIT(&attrbits); 4751 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_ACL); 4752 (void) nfsv4_fillattr(nd, vp->v_mount, vp, aclp, NULL, NULL, 0, 4753 &attrbits, NULL, NULL, 0, 0, 0, 0, (uint64_t)0, NULL); 4754 error = nfscl_request(nd, vp, p, cred, stuff); 4755 if (error) 4756 return (error); 4757 /* Don't care about the pre/postop attributes */ 4758 m_freem(nd->nd_mrep); 4759 return (nd->nd_repstat); 4760 } 4761 4762 /* 4763 * Do the NFSv4.1 Exchange ID. 4764 */ 4765 int 4766 nfsrpc_exchangeid(struct nfsmount *nmp, struct nfsclclient *clp, 4767 struct nfssockreq *nrp, int minorvers, uint32_t exchflags, 4768 struct nfsclds **dspp, struct ucred *cred, NFSPROC_T *p) 4769 { 4770 uint32_t *tl, v41flags; 4771 struct nfsrv_descript nfsd; 4772 struct nfsrv_descript *nd = &nfsd; 4773 struct nfsclds *dsp; 4774 struct timespec verstime; 4775 int error, len; 4776 4777 *dspp = NULL; 4778 if (minorvers == 0) 4779 minorvers = nmp->nm_minorvers; 4780 nfscl_reqstart(nd, NFSPROC_EXCHANGEID, nmp, NULL, 0, NULL, NULL, 4781 NFS_VER4, minorvers); 4782 NFSM_BUILD(tl, uint32_t *, 2 * NFSX_UNSIGNED); 4783 *tl++ = txdr_unsigned(nfsboottime.tv_sec); /* Client owner */ 4784 *tl = txdr_unsigned(clp->nfsc_rev); 4785 (void) nfsm_strtom(nd, clp->nfsc_id, clp->nfsc_idlen); 4786 4787 NFSM_BUILD(tl, uint32_t *, 3 * NFSX_UNSIGNED); 4788 *tl++ = txdr_unsigned(exchflags); 4789 *tl++ = txdr_unsigned(NFSV4EXCH_SP4NONE); 4790 4791 /* Set the implementation id4 */ 4792 *tl = txdr_unsigned(1); 4793 (void) nfsm_strtom(nd, "freebsd.org", strlen("freebsd.org")); 4794 (void) nfsm_strtom(nd, version, strlen(version)); 4795 NFSM_BUILD(tl, uint32_t *, NFSX_V4TIME); 4796 verstime.tv_sec = 1293840000; /* Jan 1, 2011 */ 4797 verstime.tv_nsec = 0; 4798 txdr_nfsv4time(&verstime, tl); 4799 nd->nd_flag |= ND_USEGSSNAME; 4800 error = newnfs_request(nd, nmp, NULL, nrp, NULL, p, cred, 4801 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 4802 NFSCL_DEBUG(1, "exchangeid err=%d reps=%d\n", error, 4803 (int)nd->nd_repstat); 4804 if (error != 0) 4805 return (error); 4806 if (nd->nd_repstat == 0) { 4807 NFSM_DISSECT(tl, uint32_t *, 6 * NFSX_UNSIGNED + NFSX_HYPER); 4808 len = fxdr_unsigned(int, *(tl + 7)); 4809 if (len < 0 || len > NFSV4_OPAQUELIMIT) { 4810 error = NFSERR_BADXDR; 4811 goto nfsmout; 4812 } 4813 dsp = malloc(sizeof(struct nfsclds) + len + 1, M_NFSCLDS, 4814 M_WAITOK | M_ZERO); 4815 dsp->nfsclds_expire = NFSD_MONOSEC + clp->nfsc_renew; 4816 dsp->nfsclds_servownlen = len; 4817 dsp->nfsclds_sess.nfsess_clientid.lval[0] = *tl++; 4818 dsp->nfsclds_sess.nfsess_clientid.lval[1] = *tl++; 4819 dsp->nfsclds_sess.nfsess_sequenceid = 4820 fxdr_unsigned(uint32_t, *tl++); 4821 v41flags = fxdr_unsigned(uint32_t, *tl); 4822 if ((v41flags & NFSV4EXCH_USEPNFSMDS) != 0 && 4823 NFSHASPNFSOPT(nmp)) { 4824 NFSCL_DEBUG(1, "set PNFS\n"); 4825 NFSLOCKMNT(nmp); 4826 nmp->nm_state |= NFSSTA_PNFS; 4827 NFSUNLOCKMNT(nmp); 4828 dsp->nfsclds_flags |= NFSCLDS_MDS; 4829 } 4830 if ((v41flags & NFSV4EXCH_USEPNFSDS) != 0) 4831 dsp->nfsclds_flags |= NFSCLDS_DS; 4832 if (minorvers == NFSV42_MINORVERSION) 4833 dsp->nfsclds_flags |= NFSCLDS_MINORV2; 4834 if (len > 0) 4835 nd->nd_repstat = nfsrv_mtostr(nd, 4836 dsp->nfsclds_serverown, len); 4837 if (nd->nd_repstat == 0) { 4838 mtx_init(&dsp->nfsclds_mtx, "nfsds", NULL, MTX_DEF); 4839 mtx_init(&dsp->nfsclds_sess.nfsess_mtx, "nfssession", 4840 NULL, MTX_DEF); 4841 nfscl_initsessionslots(&dsp->nfsclds_sess); 4842 *dspp = dsp; 4843 } else 4844 free(dsp, M_NFSCLDS); 4845 } 4846 error = nd->nd_repstat; 4847 nfsmout: 4848 m_freem(nd->nd_mrep); 4849 return (error); 4850 } 4851 4852 /* 4853 * Do the NFSv4.1 Create Session. 4854 */ 4855 int 4856 nfsrpc_createsession(struct nfsmount *nmp, struct nfsclsession *sep, 4857 struct nfssockreq *nrp, struct nfsclds *dsp, uint32_t sequenceid, int mds, 4858 struct ucred *cred, NFSPROC_T *p) 4859 { 4860 uint32_t crflags, maxval, *tl; 4861 struct nfsrv_descript nfsd; 4862 struct nfsrv_descript *nd = &nfsd; 4863 int error, irdcnt, minorvers; 4864 4865 /* Make sure nm_rsize, nm_wsize is set. */ 4866 if (nmp->nm_rsize > NFS_MAXBSIZE || nmp->nm_rsize == 0) 4867 nmp->nm_rsize = NFS_MAXBSIZE; 4868 if (nmp->nm_wsize > NFS_MAXBSIZE || nmp->nm_wsize == 0) 4869 nmp->nm_wsize = NFS_MAXBSIZE; 4870 if (dsp == NULL) 4871 minorvers = nmp->nm_minorvers; 4872 else if ((dsp->nfsclds_flags & NFSCLDS_MINORV2) != 0) 4873 minorvers = NFSV42_MINORVERSION; 4874 else 4875 minorvers = NFSV41_MINORVERSION; 4876 nfscl_reqstart(nd, NFSPROC_CREATESESSION, nmp, NULL, 0, NULL, NULL, 4877 NFS_VER4, minorvers); 4878 NFSM_BUILD(tl, uint32_t *, 4 * NFSX_UNSIGNED); 4879 *tl++ = sep->nfsess_clientid.lval[0]; 4880 *tl++ = sep->nfsess_clientid.lval[1]; 4881 *tl++ = txdr_unsigned(sequenceid); 4882 crflags = (NFSMNT_RDONLY(nmp->nm_mountp) ? 0 : NFSV4CRSESS_PERSIST); 4883 if (nfscl_enablecallb != 0 && nfs_numnfscbd > 0 && mds != 0) 4884 crflags |= NFSV4CRSESS_CONNBACKCHAN; 4885 *tl = txdr_unsigned(crflags); 4886 4887 /* Fill in fore channel attributes. */ 4888 NFSM_BUILD(tl, uint32_t *, 7 * NFSX_UNSIGNED); 4889 *tl++ = 0; /* Header pad size */ 4890 if ((nd->nd_flag & ND_NFSV42) != 0 && mds != 0 && sb_max_adj >= 4891 nmp->nm_wsize && sb_max_adj >= nmp->nm_rsize) { 4892 /* 4893 * NFSv4.2 Extended Attribute operations may want to do 4894 * requests/replies that are larger than nm_rsize/nm_wsize. 4895 */ 4896 *tl++ = txdr_unsigned(sb_max_adj - NFS_MAXXDR); 4897 *tl++ = txdr_unsigned(sb_max_adj - NFS_MAXXDR); 4898 } else { 4899 *tl++ = txdr_unsigned(nmp->nm_wsize + NFS_MAXXDR); 4900 *tl++ = txdr_unsigned(nmp->nm_rsize + NFS_MAXXDR); 4901 } 4902 *tl++ = txdr_unsigned(4096); /* Max response size cached */ 4903 *tl++ = txdr_unsigned(20); /* Max operations */ 4904 *tl++ = txdr_unsigned(64); /* Max slots */ 4905 *tl = 0; /* No rdma ird */ 4906 4907 /* Fill in back channel attributes. */ 4908 NFSM_BUILD(tl, uint32_t *, 7 * NFSX_UNSIGNED); 4909 *tl++ = 0; /* Header pad size */ 4910 *tl++ = txdr_unsigned(10000); /* Max request size */ 4911 *tl++ = txdr_unsigned(10000); /* Max response size */ 4912 *tl++ = txdr_unsigned(4096); /* Max response size cached */ 4913 *tl++ = txdr_unsigned(4); /* Max operations */ 4914 *tl++ = txdr_unsigned(NFSV4_CBSLOTS); /* Max slots */ 4915 *tl = 0; /* No rdma ird */ 4916 4917 NFSM_BUILD(tl, uint32_t *, 8 * NFSX_UNSIGNED); 4918 *tl++ = txdr_unsigned(NFS_CALLBCKPROG); /* Call back prog # */ 4919 4920 /* Allow AUTH_SYS callbacks as uid, gid == 0. */ 4921 *tl++ = txdr_unsigned(1); /* Auth_sys only */ 4922 *tl++ = txdr_unsigned(AUTH_SYS); /* AUTH_SYS type */ 4923 *tl++ = txdr_unsigned(nfsboottime.tv_sec); /* time stamp */ 4924 *tl++ = 0; /* Null machine name */ 4925 *tl++ = 0; /* Uid == 0 */ 4926 *tl++ = 0; /* Gid == 0 */ 4927 *tl = 0; /* No additional gids */ 4928 nd->nd_flag |= ND_USEGSSNAME; 4929 error = newnfs_request(nd, nmp, NULL, nrp, NULL, p, cred, NFS_PROG, 4930 NFS_VER4, NULL, 1, NULL, NULL); 4931 if (error != 0) 4932 return (error); 4933 if (nd->nd_repstat == 0) { 4934 NFSM_DISSECT(tl, uint32_t *, NFSX_V4SESSIONID + 4935 2 * NFSX_UNSIGNED); 4936 bcopy(tl, sep->nfsess_sessionid, NFSX_V4SESSIONID); 4937 tl += NFSX_V4SESSIONID / NFSX_UNSIGNED; 4938 sep->nfsess_sequenceid = fxdr_unsigned(uint32_t, *tl++); 4939 crflags = fxdr_unsigned(uint32_t, *tl); 4940 if ((crflags & NFSV4CRSESS_PERSIST) != 0 && mds != 0) { 4941 NFSLOCKMNT(nmp); 4942 nmp->nm_state |= NFSSTA_SESSPERSIST; 4943 NFSUNLOCKMNT(nmp); 4944 } 4945 4946 /* Get the fore channel slot count. */ 4947 NFSM_DISSECT(tl, uint32_t *, 7 * NFSX_UNSIGNED); 4948 tl++; /* Skip the header pad size. */ 4949 4950 /* Make sure nm_wsize is small enough. */ 4951 maxval = fxdr_unsigned(uint32_t, *tl++); 4952 while (maxval < nmp->nm_wsize + NFS_MAXXDR) { 4953 if (nmp->nm_wsize > 8096) 4954 nmp->nm_wsize /= 2; 4955 else 4956 break; 4957 } 4958 sep->nfsess_maxreq = maxval; 4959 4960 /* Make sure nm_rsize is small enough. */ 4961 maxval = fxdr_unsigned(uint32_t, *tl++); 4962 while (maxval < nmp->nm_rsize + NFS_MAXXDR) { 4963 if (nmp->nm_rsize > 8096) 4964 nmp->nm_rsize /= 2; 4965 else 4966 break; 4967 } 4968 sep->nfsess_maxresp = maxval; 4969 4970 sep->nfsess_maxcache = fxdr_unsigned(int, *tl++); 4971 tl++; 4972 sep->nfsess_foreslots = fxdr_unsigned(uint16_t, *tl++); 4973 NFSCL_DEBUG(4, "fore slots=%d\n", (int)sep->nfsess_foreslots); 4974 irdcnt = fxdr_unsigned(int, *tl); 4975 if (irdcnt > 0) 4976 NFSM_DISSECT(tl, uint32_t *, irdcnt * NFSX_UNSIGNED); 4977 4978 /* and the back channel slot count. */ 4979 NFSM_DISSECT(tl, uint32_t *, 7 * NFSX_UNSIGNED); 4980 tl += 5; 4981 sep->nfsess_backslots = fxdr_unsigned(uint16_t, *tl); 4982 NFSCL_DEBUG(4, "back slots=%d\n", (int)sep->nfsess_backslots); 4983 } 4984 error = nd->nd_repstat; 4985 nfsmout: 4986 m_freem(nd->nd_mrep); 4987 return (error); 4988 } 4989 4990 /* 4991 * Do the NFSv4.1 Destroy Session. 4992 */ 4993 int 4994 nfsrpc_destroysession(struct nfsmount *nmp, struct nfsclclient *clp, 4995 struct ucred *cred, NFSPROC_T *p) 4996 { 4997 uint32_t *tl; 4998 struct nfsrv_descript nfsd; 4999 struct nfsrv_descript *nd = &nfsd; 5000 int error; 5001 struct nfsclsession *tsep; 5002 5003 nfscl_reqstart(nd, NFSPROC_DESTROYSESSION, nmp, NULL, 0, NULL, NULL, 0, 5004 0); 5005 NFSM_BUILD(tl, uint32_t *, NFSX_V4SESSIONID); 5006 tsep = nfsmnt_mdssession(nmp); 5007 bcopy(tsep->nfsess_sessionid, tl, NFSX_V4SESSIONID); 5008 nd->nd_flag |= ND_USEGSSNAME; 5009 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 5010 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 5011 if (error != 0) 5012 return (error); 5013 error = nd->nd_repstat; 5014 m_freem(nd->nd_mrep); 5015 return (error); 5016 } 5017 5018 /* 5019 * Do the NFSv4.1 Destroy Client. 5020 */ 5021 int 5022 nfsrpc_destroyclient(struct nfsmount *nmp, struct nfsclclient *clp, 5023 struct ucred *cred, NFSPROC_T *p) 5024 { 5025 uint32_t *tl; 5026 struct nfsrv_descript nfsd; 5027 struct nfsrv_descript *nd = &nfsd; 5028 int error; 5029 struct nfsclsession *tsep; 5030 5031 nfscl_reqstart(nd, NFSPROC_DESTROYCLIENT, nmp, NULL, 0, NULL, NULL, 0, 5032 0); 5033 NFSM_BUILD(tl, uint32_t *, 2 * NFSX_UNSIGNED); 5034 tsep = nfsmnt_mdssession(nmp); 5035 *tl++ = tsep->nfsess_clientid.lval[0]; 5036 *tl = tsep->nfsess_clientid.lval[1]; 5037 nd->nd_flag |= ND_USEGSSNAME; 5038 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 5039 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 5040 if (error != 0) 5041 return (error); 5042 error = nd->nd_repstat; 5043 m_freem(nd->nd_mrep); 5044 return (error); 5045 } 5046 5047 /* 5048 * Do the NFSv4.1 LayoutGet. 5049 */ 5050 static int 5051 nfsrpc_layoutget(struct nfsmount *nmp, uint8_t *fhp, int fhlen, int iomode, 5052 uint64_t offset, uint64_t len, uint64_t minlen, int layouttype, 5053 int layoutlen, nfsv4stateid_t *stateidp, int *retonclosep, 5054 struct nfsclflayouthead *flhp, struct ucred *cred, NFSPROC_T *p, 5055 void *stuff) 5056 { 5057 struct nfsrv_descript nfsd, *nd = &nfsd; 5058 int error; 5059 5060 nfscl_reqstart(nd, NFSPROC_LAYOUTGET, nmp, fhp, fhlen, NULL, NULL, 0, 5061 0); 5062 nfsrv_setuplayoutget(nd, iomode, offset, len, minlen, stateidp, 5063 layouttype, layoutlen, 0); 5064 nd->nd_flag |= ND_USEGSSNAME; 5065 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 5066 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 5067 NFSCL_DEBUG(4, "layget err=%d st=%d\n", error, nd->nd_repstat); 5068 if (error != 0) 5069 return (error); 5070 if (nd->nd_repstat == 0) 5071 error = nfsrv_parselayoutget(nmp, nd, stateidp, retonclosep, 5072 flhp); 5073 if (error == 0 && nd->nd_repstat != 0) 5074 error = nd->nd_repstat; 5075 m_freem(nd->nd_mrep); 5076 return (error); 5077 } 5078 5079 /* 5080 * Do the NFSv4.1 Get Device Info. 5081 */ 5082 int 5083 nfsrpc_getdeviceinfo(struct nfsmount *nmp, uint8_t *deviceid, int layouttype, 5084 uint32_t *notifybitsp, struct nfscldevinfo **ndip, struct ucred *cred, 5085 NFSPROC_T *p) 5086 { 5087 uint32_t cnt, *tl, vers, minorvers; 5088 struct nfsrv_descript nfsd; 5089 struct nfsrv_descript *nd = &nfsd; 5090 struct sockaddr_in sin, ssin; 5091 struct sockaddr_in6 sin6, ssin6; 5092 struct nfsclds *dsp = NULL, **dspp, **gotdspp; 5093 struct nfscldevinfo *ndi; 5094 int addrcnt = 0, bitcnt, error, gotminor, gotvers, i, isudp, j; 5095 int stripecnt; 5096 uint8_t stripeindex; 5097 sa_family_t af, safilled; 5098 5099 ssin.sin_port = 0; /* To shut up compiler. */ 5100 ssin.sin_addr.s_addr = 0; /* ditto */ 5101 *ndip = NULL; 5102 ndi = NULL; 5103 gotdspp = NULL; 5104 nfscl_reqstart(nd, NFSPROC_GETDEVICEINFO, nmp, NULL, 0, NULL, NULL, 0, 5105 0); 5106 NFSM_BUILD(tl, uint32_t *, NFSX_V4DEVICEID + 3 * NFSX_UNSIGNED); 5107 NFSBCOPY(deviceid, tl, NFSX_V4DEVICEID); 5108 tl += (NFSX_V4DEVICEID / NFSX_UNSIGNED); 5109 *tl++ = txdr_unsigned(layouttype); 5110 *tl++ = txdr_unsigned(100000); 5111 if (notifybitsp != NULL && *notifybitsp != 0) { 5112 *tl = txdr_unsigned(1); /* One word of bits. */ 5113 NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED); 5114 *tl = txdr_unsigned(*notifybitsp); 5115 } else 5116 *tl = txdr_unsigned(0); 5117 nd->nd_flag |= ND_USEGSSNAME; 5118 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 5119 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 5120 if (error != 0) 5121 return (error); 5122 if (nd->nd_repstat == 0) { 5123 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED); 5124 if (layouttype != fxdr_unsigned(int, *tl)) 5125 printf("EEK! devinfo layout type not same!\n"); 5126 if (layouttype == NFSLAYOUT_NFSV4_1_FILES) { 5127 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 5128 stripecnt = fxdr_unsigned(int, *tl); 5129 NFSCL_DEBUG(4, "stripecnt=%d\n", stripecnt); 5130 if (stripecnt < 1 || stripecnt > 4096) { 5131 printf("pNFS File layout devinfo stripecnt %d:" 5132 " out of range\n", stripecnt); 5133 error = NFSERR_BADXDR; 5134 goto nfsmout; 5135 } 5136 NFSM_DISSECT(tl, uint32_t *, (stripecnt + 1) * 5137 NFSX_UNSIGNED); 5138 addrcnt = fxdr_unsigned(int, *(tl + stripecnt)); 5139 NFSCL_DEBUG(4, "addrcnt=%d\n", addrcnt); 5140 if (addrcnt < 1 || addrcnt > 128) { 5141 printf("NFS devinfo addrcnt %d: out of range\n", 5142 addrcnt); 5143 error = NFSERR_BADXDR; 5144 goto nfsmout; 5145 } 5146 5147 /* 5148 * Now we know how many stripe indices and addresses, so 5149 * we can allocate the structure the correct size. 5150 */ 5151 i = (stripecnt * sizeof(uint8_t)) / 5152 sizeof(struct nfsclds *) + 1; 5153 NFSCL_DEBUG(4, "stripeindices=%d\n", i); 5154 ndi = malloc(sizeof(*ndi) + (addrcnt + i) * 5155 sizeof(struct nfsclds *), M_NFSDEVINFO, M_WAITOK | 5156 M_ZERO); 5157 NFSBCOPY(deviceid, ndi->nfsdi_deviceid, 5158 NFSX_V4DEVICEID); 5159 ndi->nfsdi_refcnt = 0; 5160 ndi->nfsdi_flags = NFSDI_FILELAYOUT; 5161 ndi->nfsdi_stripecnt = stripecnt; 5162 ndi->nfsdi_addrcnt = addrcnt; 5163 /* Fill in the stripe indices. */ 5164 for (i = 0; i < stripecnt; i++) { 5165 stripeindex = fxdr_unsigned(uint8_t, *tl++); 5166 NFSCL_DEBUG(4, "stripeind=%d\n", stripeindex); 5167 if (stripeindex >= addrcnt) { 5168 printf("pNFS File Layout devinfo" 5169 " stripeindex %d: too big\n", 5170 (int)stripeindex); 5171 error = NFSERR_BADXDR; 5172 goto nfsmout; 5173 } 5174 nfsfldi_setstripeindex(ndi, i, stripeindex); 5175 } 5176 } else if (layouttype == NFSLAYOUT_FLEXFILE) { 5177 /* For Flex File, we only get one address list. */ 5178 ndi = malloc(sizeof(*ndi) + sizeof(struct nfsclds *), 5179 M_NFSDEVINFO, M_WAITOK | M_ZERO); 5180 NFSBCOPY(deviceid, ndi->nfsdi_deviceid, 5181 NFSX_V4DEVICEID); 5182 ndi->nfsdi_refcnt = 0; 5183 ndi->nfsdi_flags = NFSDI_FLEXFILE; 5184 addrcnt = ndi->nfsdi_addrcnt = 1; 5185 } 5186 5187 /* Now, dissect the server address(es). */ 5188 safilled = AF_UNSPEC; 5189 for (i = 0; i < addrcnt; i++) { 5190 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 5191 cnt = fxdr_unsigned(uint32_t, *tl); 5192 if (cnt == 0) { 5193 printf("NFS devinfo 0 len addrlist\n"); 5194 error = NFSERR_BADXDR; 5195 goto nfsmout; 5196 } 5197 dspp = nfsfldi_addr(ndi, i); 5198 safilled = AF_UNSPEC; 5199 for (j = 0; j < cnt; j++) { 5200 error = nfsv4_getipaddr(nd, &sin, &sin6, &af, 5201 &isudp); 5202 if (error != 0 && error != EPERM) { 5203 error = NFSERR_BADXDR; 5204 goto nfsmout; 5205 } 5206 if (error == 0 && isudp == 0) { 5207 /* 5208 * The priority is: 5209 * - Same address family. 5210 * Save the address and dspp, so that 5211 * the connection can be done after 5212 * parsing is complete. 5213 */ 5214 if (safilled == AF_UNSPEC || 5215 (af == nmp->nm_nam->sa_family && 5216 safilled != nmp->nm_nam->sa_family) 5217 ) { 5218 if (af == AF_INET) 5219 ssin = sin; 5220 else 5221 ssin6 = sin6; 5222 safilled = af; 5223 gotdspp = dspp; 5224 } 5225 } 5226 } 5227 } 5228 5229 gotvers = NFS_VER4; /* Default NFSv4.1 for File Layout. */ 5230 gotminor = NFSV41_MINORVERSION; 5231 /* For Flex File, we will take one of the versions to use. */ 5232 if (layouttype == NFSLAYOUT_FLEXFILE) { 5233 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 5234 j = fxdr_unsigned(int, *tl); 5235 if (j < 1 || j > NFSDEV_MAXVERS) { 5236 printf("pNFS: too many versions\n"); 5237 error = NFSERR_BADXDR; 5238 goto nfsmout; 5239 } 5240 gotvers = 0; 5241 gotminor = 0; 5242 for (i = 0; i < j; i++) { 5243 NFSM_DISSECT(tl, uint32_t *, 5 * NFSX_UNSIGNED); 5244 vers = fxdr_unsigned(uint32_t, *tl++); 5245 minorvers = fxdr_unsigned(uint32_t, *tl++); 5246 if (vers == NFS_VER3) 5247 minorvers = 0; 5248 if ((vers == NFS_VER4 && ((minorvers == 5249 NFSV41_MINORVERSION && gotminor == 0) || 5250 minorvers == NFSV42_MINORVERSION)) || 5251 (vers == NFS_VER3 && gotvers == 0)) { 5252 gotvers = vers; 5253 gotminor = minorvers; 5254 /* We'll take this one. */ 5255 ndi->nfsdi_versindex = i; 5256 ndi->nfsdi_vers = vers; 5257 ndi->nfsdi_minorvers = minorvers; 5258 ndi->nfsdi_rsize = fxdr_unsigned( 5259 uint32_t, *tl++); 5260 ndi->nfsdi_wsize = fxdr_unsigned( 5261 uint32_t, *tl++); 5262 if (*tl == newnfs_true) 5263 ndi->nfsdi_flags |= 5264 NFSDI_TIGHTCOUPLED; 5265 else 5266 ndi->nfsdi_flags &= 5267 ~NFSDI_TIGHTCOUPLED; 5268 } 5269 } 5270 if (gotvers == 0) { 5271 printf("pNFS: no NFSv3, NFSv4.1 or NFSv4.2\n"); 5272 error = NFSERR_BADXDR; 5273 goto nfsmout; 5274 } 5275 } 5276 5277 /* And the notify bits. */ 5278 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 5279 bitcnt = fxdr_unsigned(int, *tl); 5280 if (bitcnt > 0) { 5281 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 5282 if (notifybitsp != NULL) 5283 *notifybitsp = 5284 fxdr_unsigned(uint32_t, *tl); 5285 } 5286 if (safilled != AF_UNSPEC) { 5287 KASSERT(ndi != NULL, ("ndi is NULL")); 5288 *ndip = ndi; 5289 } else 5290 error = EPERM; 5291 if (error == 0) { 5292 /* 5293 * Now we can do a TCP connection for the correct 5294 * NFS version and IP address. 5295 */ 5296 error = nfsrpc_fillsa(nmp, &ssin, &ssin6, safilled, 5297 gotvers, gotminor, &dsp, p); 5298 } 5299 if (error == 0) { 5300 KASSERT(gotdspp != NULL, ("gotdspp is NULL")); 5301 *gotdspp = dsp; 5302 } 5303 } 5304 if (nd->nd_repstat != 0 && error == 0) 5305 error = nd->nd_repstat; 5306 nfsmout: 5307 if (error != 0 && ndi != NULL) 5308 nfscl_freedevinfo(ndi); 5309 m_freem(nd->nd_mrep); 5310 return (error); 5311 } 5312 5313 /* 5314 * Do the NFSv4.1 LayoutCommit. 5315 */ 5316 int 5317 nfsrpc_layoutcommit(struct nfsmount *nmp, uint8_t *fh, int fhlen, int reclaim, 5318 uint64_t off, uint64_t len, uint64_t lastbyte, nfsv4stateid_t *stateidp, 5319 int layouttype, struct ucred *cred, NFSPROC_T *p, void *stuff) 5320 { 5321 uint32_t *tl; 5322 struct nfsrv_descript nfsd, *nd = &nfsd; 5323 int error; 5324 5325 nfscl_reqstart(nd, NFSPROC_LAYOUTCOMMIT, nmp, fh, fhlen, NULL, NULL, 5326 0, 0); 5327 NFSM_BUILD(tl, uint32_t *, 5 * NFSX_UNSIGNED + 3 * NFSX_HYPER + 5328 NFSX_STATEID); 5329 txdr_hyper(off, tl); 5330 tl += 2; 5331 txdr_hyper(len, tl); 5332 tl += 2; 5333 if (reclaim != 0) 5334 *tl++ = newnfs_true; 5335 else 5336 *tl++ = newnfs_false; 5337 *tl++ = txdr_unsigned(stateidp->seqid); 5338 *tl++ = stateidp->other[0]; 5339 *tl++ = stateidp->other[1]; 5340 *tl++ = stateidp->other[2]; 5341 *tl++ = newnfs_true; 5342 if (lastbyte < off) 5343 lastbyte = off; 5344 else if (lastbyte >= (off + len)) 5345 lastbyte = off + len - 1; 5346 txdr_hyper(lastbyte, tl); 5347 tl += 2; 5348 *tl++ = newnfs_false; 5349 *tl++ = txdr_unsigned(layouttype); 5350 /* All supported layouts are 0 length. */ 5351 *tl = txdr_unsigned(0); 5352 nd->nd_flag |= ND_USEGSSNAME; 5353 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 5354 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 5355 if (error != 0) 5356 return (error); 5357 error = nd->nd_repstat; 5358 m_freem(nd->nd_mrep); 5359 return (error); 5360 } 5361 5362 /* 5363 * Do the NFSv4.1 LayoutReturn. 5364 */ 5365 int 5366 nfsrpc_layoutreturn(struct nfsmount *nmp, uint8_t *fh, int fhlen, int reclaim, 5367 int layouttype, uint32_t iomode, int layoutreturn, uint64_t offset, 5368 uint64_t len, nfsv4stateid_t *stateidp, struct ucred *cred, NFSPROC_T *p, 5369 uint32_t stat, uint32_t op, char *devid) 5370 { 5371 uint32_t *tl; 5372 struct nfsrv_descript nfsd, *nd = &nfsd; 5373 uint64_t tu64; 5374 int error; 5375 5376 nfscl_reqstart(nd, NFSPROC_LAYOUTRETURN, nmp, fh, fhlen, NULL, NULL, 5377 0, 0); 5378 NFSM_BUILD(tl, uint32_t *, 4 * NFSX_UNSIGNED); 5379 if (reclaim != 0) 5380 *tl++ = newnfs_true; 5381 else 5382 *tl++ = newnfs_false; 5383 *tl++ = txdr_unsigned(layouttype); 5384 *tl++ = txdr_unsigned(iomode); 5385 *tl = txdr_unsigned(layoutreturn); 5386 if (layoutreturn == NFSLAYOUTRETURN_FILE) { 5387 NFSM_BUILD(tl, uint32_t *, 2 * NFSX_HYPER + NFSX_STATEID + 5388 NFSX_UNSIGNED); 5389 txdr_hyper(offset, tl); 5390 tl += 2; 5391 txdr_hyper(len, tl); 5392 tl += 2; 5393 NFSCL_DEBUG(4, "layoutret stseq=%d\n", (int)stateidp->seqid); 5394 *tl++ = txdr_unsigned(stateidp->seqid); 5395 *tl++ = stateidp->other[0]; 5396 *tl++ = stateidp->other[1]; 5397 *tl++ = stateidp->other[2]; 5398 if (layouttype == NFSLAYOUT_NFSV4_1_FILES) 5399 *tl = txdr_unsigned(0); 5400 else if (layouttype == NFSLAYOUT_FLEXFILE) { 5401 if (stat != 0) { 5402 *tl = txdr_unsigned(2 * NFSX_HYPER + 5403 NFSX_STATEID + NFSX_V4DEVICEID + 5 * 5404 NFSX_UNSIGNED); 5405 NFSM_BUILD(tl, uint32_t *, 2 * NFSX_HYPER + 5406 NFSX_STATEID + NFSX_V4DEVICEID + 5 * 5407 NFSX_UNSIGNED); 5408 *tl++ = txdr_unsigned(1); /* One error. */ 5409 tu64 = 0; /* Offset. */ 5410 txdr_hyper(tu64, tl); tl += 2; 5411 tu64 = UINT64_MAX; /* Length. */ 5412 txdr_hyper(tu64, tl); tl += 2; 5413 NFSBCOPY(stateidp, tl, NFSX_STATEID); 5414 tl += (NFSX_STATEID / NFSX_UNSIGNED); 5415 *tl++ = txdr_unsigned(1); /* One error. */ 5416 NFSBCOPY(devid, tl, NFSX_V4DEVICEID); 5417 tl += (NFSX_V4DEVICEID / NFSX_UNSIGNED); 5418 *tl++ = txdr_unsigned(stat); 5419 *tl++ = txdr_unsigned(op); 5420 } else { 5421 *tl = txdr_unsigned(2 * NFSX_UNSIGNED); 5422 NFSM_BUILD(tl, uint32_t *, 2 * NFSX_UNSIGNED); 5423 /* No ioerrs. */ 5424 *tl++ = 0; 5425 } 5426 *tl = 0; /* No stats yet. */ 5427 } 5428 } 5429 nd->nd_flag |= ND_USEGSSNAME; 5430 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 5431 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 5432 if (error != 0) 5433 return (error); 5434 if (nd->nd_repstat == 0) { 5435 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 5436 if (*tl != 0) { 5437 NFSM_DISSECT(tl, uint32_t *, NFSX_STATEID); 5438 stateidp->seqid = fxdr_unsigned(uint32_t, *tl++); 5439 stateidp->other[0] = *tl++; 5440 stateidp->other[1] = *tl++; 5441 stateidp->other[2] = *tl; 5442 } 5443 } else 5444 error = nd->nd_repstat; 5445 nfsmout: 5446 m_freem(nd->nd_mrep); 5447 return (error); 5448 } 5449 5450 /* 5451 * Acquire a layout and devinfo, if possible. The caller must have acquired 5452 * a reference count on the nfsclclient structure before calling this. 5453 * Return the layout in lypp with a reference count on it, if successful. 5454 */ 5455 static int 5456 nfsrpc_getlayout(struct nfsmount *nmp, vnode_t vp, struct nfsfh *nfhp, 5457 int iomode, uint32_t *notifybitsp, nfsv4stateid_t *stateidp, uint64_t off, 5458 struct nfscllayout **lypp, struct ucred *cred, NFSPROC_T *p) 5459 { 5460 struct nfscllayout *lyp; 5461 struct nfsclflayout *flp; 5462 struct nfsclflayouthead flh; 5463 int error = 0, islocked, layoutlen, layouttype, recalled, retonclose; 5464 nfsv4stateid_t stateid; 5465 struct nfsclsession *tsep; 5466 5467 *lypp = NULL; 5468 if (NFSHASFLEXFILE(nmp)) 5469 layouttype = NFSLAYOUT_FLEXFILE; 5470 else 5471 layouttype = NFSLAYOUT_NFSV4_1_FILES; 5472 /* 5473 * If lyp is returned non-NULL, there will be a refcnt (shared lock) 5474 * on it, iff flp != NULL or a lock (exclusive lock) on it iff 5475 * flp == NULL. 5476 */ 5477 lyp = nfscl_getlayout(nmp->nm_clp, nfhp->nfh_fh, nfhp->nfh_len, 5478 off, &flp, &recalled); 5479 islocked = 0; 5480 if (lyp == NULL || flp == NULL) { 5481 if (recalled != 0) 5482 return (EIO); 5483 LIST_INIT(&flh); 5484 tsep = nfsmnt_mdssession(nmp); 5485 layoutlen = tsep->nfsess_maxcache - 5486 (NFSX_STATEID + 3 * NFSX_UNSIGNED); 5487 if (lyp == NULL) { 5488 stateid.seqid = 0; 5489 stateid.other[0] = stateidp->other[0]; 5490 stateid.other[1] = stateidp->other[1]; 5491 stateid.other[2] = stateidp->other[2]; 5492 error = nfsrpc_layoutget(nmp, nfhp->nfh_fh, 5493 nfhp->nfh_len, iomode, (uint64_t)0, UINT64_MAX, 5494 (uint64_t)0, layouttype, layoutlen, &stateid, 5495 &retonclose, &flh, cred, p, NULL); 5496 } else { 5497 islocked = 1; 5498 stateid.seqid = lyp->nfsly_stateid.seqid; 5499 stateid.other[0] = lyp->nfsly_stateid.other[0]; 5500 stateid.other[1] = lyp->nfsly_stateid.other[1]; 5501 stateid.other[2] = lyp->nfsly_stateid.other[2]; 5502 error = nfsrpc_layoutget(nmp, nfhp->nfh_fh, 5503 nfhp->nfh_len, iomode, off, UINT64_MAX, 5504 (uint64_t)0, layouttype, layoutlen, &stateid, 5505 &retonclose, &flh, cred, p, NULL); 5506 } 5507 error = nfsrpc_layoutgetres(nmp, vp, nfhp->nfh_fh, 5508 nfhp->nfh_len, &stateid, retonclose, notifybitsp, &lyp, 5509 &flh, layouttype, error, NULL, cred, p); 5510 if (error == 0) 5511 *lypp = lyp; 5512 else if (islocked != 0) 5513 nfscl_rellayout(lyp, 1); 5514 } else 5515 *lypp = lyp; 5516 return (error); 5517 } 5518 5519 /* 5520 * Do a TCP connection plus exchange id and create session. 5521 * If successful, a "struct nfsclds" is linked into the list for the 5522 * mount point and a pointer to it is returned. 5523 */ 5524 static int 5525 nfsrpc_fillsa(struct nfsmount *nmp, struct sockaddr_in *sin, 5526 struct sockaddr_in6 *sin6, sa_family_t af, int vers, int minorvers, 5527 struct nfsclds **dspp, NFSPROC_T *p) 5528 { 5529 struct sockaddr_in *msad, *sad; 5530 struct sockaddr_in6 *msad6, *sad6; 5531 struct nfsclclient *clp; 5532 struct nfssockreq *nrp; 5533 struct nfsclds *dsp, *tdsp; 5534 int error, firsttry; 5535 enum nfsclds_state retv; 5536 uint32_t sequenceid = 0; 5537 5538 KASSERT(nmp->nm_sockreq.nr_cred != NULL, 5539 ("nfsrpc_fillsa: NULL nr_cred")); 5540 NFSLOCKCLSTATE(); 5541 clp = nmp->nm_clp; 5542 NFSUNLOCKCLSTATE(); 5543 if (clp == NULL) 5544 return (EPERM); 5545 if (af == AF_INET) { 5546 NFSLOCKMNT(nmp); 5547 /* 5548 * Check to see if we already have a session for this 5549 * address that is usable for a DS. 5550 * Note that the MDS's address is in a different place 5551 * than the sessions already acquired for DS's. 5552 */ 5553 msad = (struct sockaddr_in *)nmp->nm_sockreq.nr_nam; 5554 tdsp = TAILQ_FIRST(&nmp->nm_sess); 5555 while (tdsp != NULL) { 5556 if (msad != NULL && msad->sin_family == AF_INET && 5557 sin->sin_addr.s_addr == msad->sin_addr.s_addr && 5558 sin->sin_port == msad->sin_port && 5559 (tdsp->nfsclds_flags & NFSCLDS_DS) != 0 && 5560 tdsp->nfsclds_sess.nfsess_defunct == 0) { 5561 *dspp = tdsp; 5562 NFSUNLOCKMNT(nmp); 5563 NFSCL_DEBUG(4, "fnd same addr\n"); 5564 return (0); 5565 } 5566 tdsp = TAILQ_NEXT(tdsp, nfsclds_list); 5567 if (tdsp != NULL && tdsp->nfsclds_sockp != NULL) 5568 msad = (struct sockaddr_in *) 5569 tdsp->nfsclds_sockp->nr_nam; 5570 else 5571 msad = NULL; 5572 } 5573 NFSUNLOCKMNT(nmp); 5574 5575 /* No IP address match, so look for new/trunked one. */ 5576 sad = malloc(sizeof(*sad), M_SONAME, M_WAITOK | M_ZERO); 5577 sad->sin_len = sizeof(*sad); 5578 sad->sin_family = AF_INET; 5579 sad->sin_port = sin->sin_port; 5580 sad->sin_addr.s_addr = sin->sin_addr.s_addr; 5581 nrp = malloc(sizeof(*nrp), M_NFSSOCKREQ, M_WAITOK | M_ZERO); 5582 nrp->nr_nam = (struct sockaddr *)sad; 5583 } else if (af == AF_INET6) { 5584 NFSLOCKMNT(nmp); 5585 /* 5586 * Check to see if we already have a session for this 5587 * address that is usable for a DS. 5588 * Note that the MDS's address is in a different place 5589 * than the sessions already acquired for DS's. 5590 */ 5591 msad6 = (struct sockaddr_in6 *)nmp->nm_sockreq.nr_nam; 5592 tdsp = TAILQ_FIRST(&nmp->nm_sess); 5593 while (tdsp != NULL) { 5594 if (msad6 != NULL && msad6->sin6_family == AF_INET6 && 5595 IN6_ARE_ADDR_EQUAL(&sin6->sin6_addr, 5596 &msad6->sin6_addr) && 5597 sin6->sin6_port == msad6->sin6_port && 5598 (tdsp->nfsclds_flags & NFSCLDS_DS) != 0 && 5599 tdsp->nfsclds_sess.nfsess_defunct == 0) { 5600 *dspp = tdsp; 5601 NFSUNLOCKMNT(nmp); 5602 return (0); 5603 } 5604 tdsp = TAILQ_NEXT(tdsp, nfsclds_list); 5605 if (tdsp != NULL && tdsp->nfsclds_sockp != NULL) 5606 msad6 = (struct sockaddr_in6 *) 5607 tdsp->nfsclds_sockp->nr_nam; 5608 else 5609 msad6 = NULL; 5610 } 5611 NFSUNLOCKMNT(nmp); 5612 5613 /* No IP address match, so look for new/trunked one. */ 5614 sad6 = malloc(sizeof(*sad6), M_SONAME, M_WAITOK | M_ZERO); 5615 sad6->sin6_len = sizeof(*sad6); 5616 sad6->sin6_family = AF_INET6; 5617 sad6->sin6_port = sin6->sin6_port; 5618 NFSBCOPY(&sin6->sin6_addr, &sad6->sin6_addr, 5619 sizeof(struct in6_addr)); 5620 nrp = malloc(sizeof(*nrp), M_NFSSOCKREQ, M_WAITOK | M_ZERO); 5621 nrp->nr_nam = (struct sockaddr *)sad6; 5622 } else 5623 return (EPERM); 5624 5625 nrp->nr_sotype = SOCK_STREAM; 5626 mtx_init(&nrp->nr_mtx, "nfssock", NULL, MTX_DEF); 5627 nrp->nr_prog = NFS_PROG; 5628 nrp->nr_vers = vers; 5629 5630 /* 5631 * Use the credentials that were used for the mount, which are 5632 * in nmp->nm_sockreq.nr_cred for newnfs_connect() etc. 5633 * Ref. counting the credentials with crhold() is probably not 5634 * necessary, since nm_sockreq.nr_cred won't be crfree()'d until 5635 * unmount, but I did it anyhow. 5636 */ 5637 nrp->nr_cred = crhold(nmp->nm_sockreq.nr_cred); 5638 error = newnfs_connect(nmp, nrp, NULL, p, 0, false); 5639 NFSCL_DEBUG(3, "DS connect=%d\n", error); 5640 5641 dsp = NULL; 5642 /* Now, do the exchangeid and create session. */ 5643 if (error == 0) { 5644 if (vers == NFS_VER4) { 5645 firsttry = 0; 5646 do { 5647 error = nfsrpc_exchangeid(nmp, clp, nrp, 5648 minorvers, NFSV4EXCH_USEPNFSDS, &dsp, 5649 nrp->nr_cred, p); 5650 NFSCL_DEBUG(3, "DS exchangeid=%d\n", error); 5651 if (error == NFSERR_MINORVERMISMATCH) 5652 minorvers = NFSV42_MINORVERSION; 5653 } while (error == NFSERR_MINORVERMISMATCH && 5654 firsttry++ == 0); 5655 if (error != 0) 5656 newnfs_disconnect(nrp); 5657 } else { 5658 dsp = malloc(sizeof(struct nfsclds), M_NFSCLDS, 5659 M_WAITOK | M_ZERO); 5660 dsp->nfsclds_flags |= NFSCLDS_DS; 5661 dsp->nfsclds_expire = INT32_MAX; /* No renews needed. */ 5662 mtx_init(&dsp->nfsclds_mtx, "nfsds", NULL, MTX_DEF); 5663 mtx_init(&dsp->nfsclds_sess.nfsess_mtx, "nfssession", 5664 NULL, MTX_DEF); 5665 } 5666 } 5667 if (error == 0) { 5668 dsp->nfsclds_sockp = nrp; 5669 if (vers == NFS_VER4) { 5670 NFSLOCKMNT(nmp); 5671 retv = nfscl_getsameserver(nmp, dsp, &tdsp, 5672 &sequenceid); 5673 NFSCL_DEBUG(3, "getsame ret=%d\n", retv); 5674 if (retv == NFSDSP_USETHISSESSION && 5675 nfscl_dssameconn != 0) { 5676 NFSLOCKDS(tdsp); 5677 tdsp->nfsclds_flags |= NFSCLDS_SAMECONN; 5678 NFSUNLOCKDS(tdsp); 5679 NFSUNLOCKMNT(nmp); 5680 /* 5681 * If there is already a session for this 5682 * server, use it. 5683 */ 5684 (void)newnfs_disconnect(nrp); 5685 nfscl_freenfsclds(dsp); 5686 *dspp = tdsp; 5687 return (0); 5688 } 5689 if (retv == NFSDSP_NOTFOUND) 5690 sequenceid = 5691 dsp->nfsclds_sess.nfsess_sequenceid; 5692 NFSUNLOCKMNT(nmp); 5693 error = nfsrpc_createsession(nmp, &dsp->nfsclds_sess, 5694 nrp, dsp, sequenceid, 0, nrp->nr_cred, p); 5695 NFSCL_DEBUG(3, "DS createsess=%d\n", error); 5696 } 5697 } else { 5698 NFSFREECRED(nrp->nr_cred); 5699 NFSFREEMUTEX(&nrp->nr_mtx); 5700 free(nrp->nr_nam, M_SONAME); 5701 free(nrp, M_NFSSOCKREQ); 5702 } 5703 if (error == 0) { 5704 NFSCL_DEBUG(3, "add DS session\n"); 5705 /* 5706 * Put it at the end of the list. That way the list 5707 * is ordered by when the entry was added. This matters 5708 * since the one done first is the one that should be 5709 * used for sequencid'ing any subsequent create sessions. 5710 */ 5711 NFSLOCKMNT(nmp); 5712 TAILQ_INSERT_TAIL(&nmp->nm_sess, dsp, nfsclds_list); 5713 NFSUNLOCKMNT(nmp); 5714 *dspp = dsp; 5715 } else if (dsp != NULL) { 5716 newnfs_disconnect(nrp); 5717 nfscl_freenfsclds(dsp); 5718 } 5719 return (error); 5720 } 5721 5722 /* 5723 * Do the NFSv4.1 Reclaim Complete. 5724 */ 5725 int 5726 nfsrpc_reclaimcomplete(struct nfsmount *nmp, struct ucred *cred, NFSPROC_T *p) 5727 { 5728 uint32_t *tl; 5729 struct nfsrv_descript nfsd; 5730 struct nfsrv_descript *nd = &nfsd; 5731 int error; 5732 5733 nfscl_reqstart(nd, NFSPROC_RECLAIMCOMPL, nmp, NULL, 0, NULL, NULL, 0, 5734 0); 5735 NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED); 5736 *tl = newnfs_false; 5737 nd->nd_flag |= ND_USEGSSNAME; 5738 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, NULL, p, cred, 5739 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 5740 if (error != 0) 5741 return (error); 5742 error = nd->nd_repstat; 5743 m_freem(nd->nd_mrep); 5744 return (error); 5745 } 5746 5747 /* 5748 * Initialize the slot tables for a session. 5749 */ 5750 static void 5751 nfscl_initsessionslots(struct nfsclsession *sep) 5752 { 5753 int i; 5754 5755 for (i = 0; i < NFSV4_CBSLOTS; i++) { 5756 if (sep->nfsess_cbslots[i].nfssl_reply != NULL) 5757 m_freem(sep->nfsess_cbslots[i].nfssl_reply); 5758 NFSBZERO(&sep->nfsess_cbslots[i], sizeof(struct nfsslot)); 5759 } 5760 for (i = 0; i < 64; i++) 5761 sep->nfsess_slotseq[i] = 0; 5762 sep->nfsess_slots = 0; 5763 } 5764 5765 /* 5766 * Called to try and do an I/O operation via an NFSv4.1 Data Server (DS). 5767 */ 5768 int 5769 nfscl_doiods(vnode_t vp, struct uio *uiop, int *iomode, int *must_commit, 5770 uint32_t rwaccess, int docommit, struct ucred *cred, NFSPROC_T *p) 5771 { 5772 struct nfsnode *np = VTONFS(vp); 5773 struct nfsmount *nmp = VFSTONFS(vp->v_mount); 5774 struct nfscllayout *layp; 5775 struct nfscldevinfo *dip; 5776 struct nfsclflayout *rflp; 5777 struct mbuf *m, *m2; 5778 struct nfsclwritedsdorpc *drpc, *tdrpc; 5779 nfsv4stateid_t stateid; 5780 struct ucred *newcred; 5781 uint64_t lastbyte, len, off, oresid, xfer; 5782 int eof, error, firstmirror, i, iolaymode, mirrorcnt, recalled, timo; 5783 void *lckp; 5784 uint8_t *dev; 5785 void *iovbase = NULL; 5786 size_t iovlen = 0; 5787 off_t offs = 0; 5788 ssize_t resid = 0; 5789 5790 if (!NFSHASPNFS(nmp) || nfscl_enablecallb == 0 || nfs_numnfscbd == 0 || 5791 (np->n_flag & NNOLAYOUT) != 0) 5792 return (EIO); 5793 /* Now, get a reference cnt on the clientid for this mount. */ 5794 if (nfscl_getref(nmp) == 0) 5795 return (EIO); 5796 5797 /* Find an appropriate stateid. */ 5798 newcred = NFSNEWCRED(cred); 5799 error = nfscl_getstateid(vp, np->n_fhp->nfh_fh, np->n_fhp->nfh_len, 5800 rwaccess, 1, newcred, p, &stateid, &lckp); 5801 if (error != 0) { 5802 NFSFREECRED(newcred); 5803 nfscl_relref(nmp); 5804 return (error); 5805 } 5806 /* Search for a layout for this file. */ 5807 off = uiop->uio_offset; 5808 layp = nfscl_getlayout(nmp->nm_clp, np->n_fhp->nfh_fh, 5809 np->n_fhp->nfh_len, off, &rflp, &recalled); 5810 if (layp == NULL || rflp == NULL) { 5811 if (recalled != 0) { 5812 NFSFREECRED(newcred); 5813 nfscl_relref(nmp); 5814 return (EIO); 5815 } 5816 if (layp != NULL) { 5817 nfscl_rellayout(layp, (rflp == NULL) ? 1 : 0); 5818 layp = NULL; 5819 } 5820 /* Try and get a Layout, if it is supported. */ 5821 if (rwaccess == NFSV4OPEN_ACCESSWRITE || 5822 (np->n_flag & NWRITEOPENED) != 0) 5823 iolaymode = NFSLAYOUTIOMODE_RW; 5824 else 5825 iolaymode = NFSLAYOUTIOMODE_READ; 5826 error = nfsrpc_getlayout(nmp, vp, np->n_fhp, iolaymode, 5827 NULL, &stateid, off, &layp, newcred, p); 5828 if (error != 0) { 5829 NFSLOCKNODE(np); 5830 np->n_flag |= NNOLAYOUT; 5831 NFSUNLOCKNODE(np); 5832 if (lckp != NULL) 5833 nfscl_lockderef(lckp); 5834 NFSFREECRED(newcred); 5835 if (layp != NULL) 5836 nfscl_rellayout(layp, 0); 5837 nfscl_relref(nmp); 5838 return (error); 5839 } 5840 } 5841 5842 /* 5843 * Loop around finding a layout that works for the first part of 5844 * this I/O operation, and then call the function that actually 5845 * does the RPC. 5846 */ 5847 eof = 0; 5848 len = (uint64_t)uiop->uio_resid; 5849 while (len > 0 && error == 0 && eof == 0) { 5850 off = uiop->uio_offset; 5851 error = nfscl_findlayoutforio(layp, off, rwaccess, &rflp); 5852 if (error == 0) { 5853 oresid = xfer = (uint64_t)uiop->uio_resid; 5854 if (xfer > (rflp->nfsfl_end - rflp->nfsfl_off)) 5855 xfer = rflp->nfsfl_end - rflp->nfsfl_off; 5856 /* 5857 * For Flex File layout with mirrored DSs, select one 5858 * of them at random for reads. For writes and commits, 5859 * do all mirrors. 5860 */ 5861 m = NULL; 5862 tdrpc = drpc = NULL; 5863 firstmirror = 0; 5864 mirrorcnt = 1; 5865 if ((layp->nfsly_flags & NFSLY_FLEXFILE) != 0 && 5866 (mirrorcnt = rflp->nfsfl_mirrorcnt) > 1) { 5867 if (rwaccess == NFSV4OPEN_ACCESSREAD) { 5868 firstmirror = arc4random() % mirrorcnt; 5869 mirrorcnt = firstmirror + 1; 5870 } else { 5871 if (docommit == 0) { 5872 /* 5873 * Save values, so uiop can be 5874 * rolled back upon a write 5875 * error. 5876 */ 5877 offs = uiop->uio_offset; 5878 resid = uiop->uio_resid; 5879 iovbase = 5880 uiop->uio_iov->iov_base; 5881 iovlen = uiop->uio_iov->iov_len; 5882 m = nfsm_uiombuflist(uiop, len, 5883 0); 5884 } 5885 tdrpc = drpc = malloc(sizeof(*drpc) * 5886 (mirrorcnt - 1), M_TEMP, M_WAITOK | 5887 M_ZERO); 5888 } 5889 } 5890 for (i = firstmirror; i < mirrorcnt && error == 0; i++){ 5891 m2 = NULL; 5892 if (m != NULL && i < mirrorcnt - 1) 5893 m2 = m_copym(m, 0, M_COPYALL, M_WAITOK); 5894 else { 5895 m2 = m; 5896 m = NULL; 5897 } 5898 if ((layp->nfsly_flags & NFSLY_FLEXFILE) != 0) { 5899 dev = rflp->nfsfl_ffm[i].dev; 5900 dip = nfscl_getdevinfo(nmp->nm_clp, dev, 5901 rflp->nfsfl_ffm[i].devp); 5902 } else { 5903 dev = rflp->nfsfl_dev; 5904 dip = nfscl_getdevinfo(nmp->nm_clp, dev, 5905 rflp->nfsfl_devp); 5906 } 5907 if (dip != NULL) { 5908 if ((rflp->nfsfl_flags & NFSFL_FLEXFILE) 5909 != 0) 5910 error = nfscl_dofflayoutio(vp, 5911 uiop, iomode, must_commit, 5912 &eof, &stateid, rwaccess, 5913 dip, layp, rflp, off, xfer, 5914 i, docommit, m2, tdrpc, 5915 newcred, p); 5916 else 5917 error = nfscl_doflayoutio(vp, 5918 uiop, iomode, must_commit, 5919 &eof, &stateid, rwaccess, 5920 dip, layp, rflp, off, xfer, 5921 docommit, newcred, p); 5922 nfscl_reldevinfo(dip); 5923 } else { 5924 if (m2 != NULL) 5925 m_freem(m2); 5926 error = EIO; 5927 } 5928 tdrpc++; 5929 } 5930 if (m != NULL) 5931 m_freem(m); 5932 tdrpc = drpc; 5933 timo = hz / 50; /* Wait for 20msec. */ 5934 if (timo < 1) 5935 timo = 1; 5936 for (i = firstmirror; i < mirrorcnt - 1 && 5937 tdrpc != NULL; i++, tdrpc++) { 5938 /* 5939 * For the unused drpc entries, both inprog and 5940 * err == 0, so this loop won't break. 5941 */ 5942 while (tdrpc->inprog != 0 && tdrpc->done == 0) 5943 tsleep(&tdrpc->tsk, PVFS, "clrpcio", 5944 timo); 5945 if (error == 0 && tdrpc->err != 0) 5946 error = tdrpc->err; 5947 } 5948 free(drpc, M_TEMP); 5949 if (error == 0) { 5950 if (mirrorcnt > 1 && rwaccess == 5951 NFSV4OPEN_ACCESSWRITE && docommit == 0) { 5952 NFSLOCKCLSTATE(); 5953 layp->nfsly_flags |= NFSLY_WRITTEN; 5954 NFSUNLOCKCLSTATE(); 5955 } 5956 lastbyte = off + xfer - 1; 5957 NFSLOCKCLSTATE(); 5958 if (lastbyte > layp->nfsly_lastbyte) 5959 layp->nfsly_lastbyte = lastbyte; 5960 NFSUNLOCKCLSTATE(); 5961 } else if (error == NFSERR_OPENMODE && 5962 rwaccess == NFSV4OPEN_ACCESSREAD) { 5963 NFSLOCKMNT(nmp); 5964 nmp->nm_state |= NFSSTA_OPENMODE; 5965 NFSUNLOCKMNT(nmp); 5966 } else 5967 error = EIO; 5968 if (error == 0) 5969 len -= (oresid - (uint64_t)uiop->uio_resid); 5970 else if (mirrorcnt > 1 && rwaccess == 5971 NFSV4OPEN_ACCESSWRITE && docommit == 0) { 5972 /* 5973 * In case the rpc gets retried, roll the 5974 * uio fields changed by nfsm_uiombuflist() 5975 * back. 5976 */ 5977 uiop->uio_offset = offs; 5978 uiop->uio_resid = resid; 5979 uiop->uio_iov->iov_base = iovbase; 5980 uiop->uio_iov->iov_len = iovlen; 5981 } 5982 } 5983 } 5984 if (lckp != NULL) 5985 nfscl_lockderef(lckp); 5986 NFSFREECRED(newcred); 5987 nfscl_rellayout(layp, 0); 5988 nfscl_relref(nmp); 5989 return (error); 5990 } 5991 5992 /* 5993 * Find a file layout that will handle the first bytes of the requested 5994 * range and return the information from it needed to the I/O operation. 5995 */ 5996 int 5997 nfscl_findlayoutforio(struct nfscllayout *lyp, uint64_t off, uint32_t rwaccess, 5998 struct nfsclflayout **retflpp) 5999 { 6000 struct nfsclflayout *flp, *nflp, *rflp; 6001 uint32_t rw; 6002 6003 rflp = NULL; 6004 rw = rwaccess; 6005 /* For reading, do the Read list first and then the Write list. */ 6006 do { 6007 if (rw == NFSV4OPEN_ACCESSREAD) 6008 flp = LIST_FIRST(&lyp->nfsly_flayread); 6009 else 6010 flp = LIST_FIRST(&lyp->nfsly_flayrw); 6011 while (flp != NULL) { 6012 nflp = LIST_NEXT(flp, nfsfl_list); 6013 if (flp->nfsfl_off > off) 6014 break; 6015 if (flp->nfsfl_end > off && 6016 (rflp == NULL || rflp->nfsfl_end < flp->nfsfl_end)) 6017 rflp = flp; 6018 flp = nflp; 6019 } 6020 if (rw == NFSV4OPEN_ACCESSREAD) 6021 rw = NFSV4OPEN_ACCESSWRITE; 6022 else 6023 rw = 0; 6024 } while (rw != 0); 6025 if (rflp != NULL) { 6026 /* This one covers the most bytes starting at off. */ 6027 *retflpp = rflp; 6028 return (0); 6029 } 6030 return (EIO); 6031 } 6032 6033 /* 6034 * Do I/O using an NFSv4.1 or NFSv4.2 file layout. 6035 */ 6036 static int 6037 nfscl_doflayoutio(vnode_t vp, struct uio *uiop, int *iomode, int *must_commit, 6038 int *eofp, nfsv4stateid_t *stateidp, int rwflag, struct nfscldevinfo *dp, 6039 struct nfscllayout *lyp, struct nfsclflayout *flp, uint64_t off, 6040 uint64_t len, int docommit, struct ucred *cred, NFSPROC_T *p) 6041 { 6042 uint64_t io_off, rel_off, stripe_unit_size, transfer, xfer; 6043 int commit_thru_mds, error, stripe_index, stripe_pos, minorvers; 6044 struct nfsnode *np; 6045 struct nfsfh *fhp; 6046 struct nfsclds **dspp; 6047 6048 np = VTONFS(vp); 6049 rel_off = off - flp->nfsfl_patoff; 6050 stripe_unit_size = flp->nfsfl_util & NFSFLAYUTIL_STRIPE_MASK; 6051 stripe_pos = (rel_off / stripe_unit_size + flp->nfsfl_stripe1) % 6052 dp->nfsdi_stripecnt; 6053 transfer = stripe_unit_size - (rel_off % stripe_unit_size); 6054 error = 0; 6055 6056 /* Loop around, doing I/O for each stripe unit. */ 6057 while (len > 0 && error == 0) { 6058 stripe_index = nfsfldi_stripeindex(dp, stripe_pos); 6059 dspp = nfsfldi_addr(dp, stripe_index); 6060 if (((*dspp)->nfsclds_flags & NFSCLDS_MINORV2) != 0) 6061 minorvers = NFSV42_MINORVERSION; 6062 else 6063 minorvers = NFSV41_MINORVERSION; 6064 if (len > transfer && docommit == 0) 6065 xfer = transfer; 6066 else 6067 xfer = len; 6068 if ((flp->nfsfl_util & NFSFLAYUTIL_DENSE) != 0) { 6069 /* Dense layout. */ 6070 if (stripe_pos >= flp->nfsfl_fhcnt) 6071 return (EIO); 6072 fhp = flp->nfsfl_fh[stripe_pos]; 6073 io_off = (rel_off / (stripe_unit_size * 6074 dp->nfsdi_stripecnt)) * stripe_unit_size + 6075 rel_off % stripe_unit_size; 6076 } else { 6077 /* Sparse layout. */ 6078 if (flp->nfsfl_fhcnt > 1) { 6079 if (stripe_index >= flp->nfsfl_fhcnt) 6080 return (EIO); 6081 fhp = flp->nfsfl_fh[stripe_index]; 6082 } else if (flp->nfsfl_fhcnt == 1) 6083 fhp = flp->nfsfl_fh[0]; 6084 else 6085 fhp = np->n_fhp; 6086 io_off = off; 6087 } 6088 if ((flp->nfsfl_util & NFSFLAYUTIL_COMMIT_THRU_MDS) != 0) { 6089 commit_thru_mds = 1; 6090 if (docommit != 0) 6091 error = EIO; 6092 } else { 6093 commit_thru_mds = 0; 6094 NFSLOCKNODE(np); 6095 np->n_flag |= NDSCOMMIT; 6096 NFSUNLOCKNODE(np); 6097 } 6098 if (docommit != 0) { 6099 if (error == 0) 6100 error = nfsrpc_commitds(vp, io_off, xfer, 6101 *dspp, fhp, NFS_VER4, minorvers, cred, p); 6102 if (error == 0) { 6103 /* 6104 * Set both eof and uio_resid = 0 to end any 6105 * loops. 6106 */ 6107 *eofp = 1; 6108 uiop->uio_resid = 0; 6109 } else { 6110 NFSLOCKNODE(np); 6111 np->n_flag &= ~NDSCOMMIT; 6112 NFSUNLOCKNODE(np); 6113 } 6114 } else if (rwflag == NFSV4OPEN_ACCESSREAD) 6115 error = nfsrpc_readds(vp, uiop, stateidp, eofp, *dspp, 6116 io_off, xfer, fhp, 0, NFS_VER4, minorvers, cred, p); 6117 else { 6118 error = nfsrpc_writeds(vp, uiop, iomode, must_commit, 6119 stateidp, *dspp, io_off, xfer, fhp, commit_thru_mds, 6120 0, NFS_VER4, minorvers, cred, p); 6121 if (error == 0) { 6122 NFSLOCKCLSTATE(); 6123 lyp->nfsly_flags |= NFSLY_WRITTEN; 6124 NFSUNLOCKCLSTATE(); 6125 } 6126 } 6127 if (error == 0) { 6128 transfer = stripe_unit_size; 6129 stripe_pos = (stripe_pos + 1) % dp->nfsdi_stripecnt; 6130 len -= xfer; 6131 off += xfer; 6132 } 6133 } 6134 return (error); 6135 } 6136 6137 /* 6138 * Do I/O using an NFSv4.1 flex file layout. 6139 */ 6140 static int 6141 nfscl_dofflayoutio(vnode_t vp, struct uio *uiop, int *iomode, int *must_commit, 6142 int *eofp, nfsv4stateid_t *stateidp, int rwflag, struct nfscldevinfo *dp, 6143 struct nfscllayout *lyp, struct nfsclflayout *flp, uint64_t off, 6144 uint64_t len, int mirror, int docommit, struct mbuf *mp, 6145 struct nfsclwritedsdorpc *drpc, struct ucred *cred, NFSPROC_T *p) 6146 { 6147 uint64_t xfer; 6148 int error; 6149 struct nfsnode *np; 6150 struct nfsfh *fhp; 6151 struct nfsclds **dspp; 6152 struct ucred *tcred; 6153 struct mbuf *m, *m2; 6154 uint32_t copylen; 6155 6156 np = VTONFS(vp); 6157 error = 0; 6158 NFSCL_DEBUG(4, "nfscl_dofflayoutio: off=%ju len=%ju\n", (uintmax_t)off, 6159 (uintmax_t)len); 6160 /* Loop around, doing I/O for each stripe unit. */ 6161 while (len > 0 && error == 0) { 6162 dspp = nfsfldi_addr(dp, 0); 6163 fhp = flp->nfsfl_ffm[mirror].fh[dp->nfsdi_versindex]; 6164 stateidp = &flp->nfsfl_ffm[mirror].st; 6165 NFSCL_DEBUG(4, "mirror=%d vind=%d fhlen=%d st.seqid=0x%x\n", 6166 mirror, dp->nfsdi_versindex, fhp->nfh_len, stateidp->seqid); 6167 if ((dp->nfsdi_flags & NFSDI_TIGHTCOUPLED) == 0) { 6168 tcred = NFSNEWCRED(cred); 6169 tcred->cr_uid = flp->nfsfl_ffm[mirror].user; 6170 tcred->cr_groups[0] = flp->nfsfl_ffm[mirror].group; 6171 tcred->cr_ngroups = 1; 6172 } else 6173 tcred = cred; 6174 if (rwflag == NFSV4OPEN_ACCESSREAD) 6175 copylen = dp->nfsdi_rsize; 6176 else { 6177 copylen = dp->nfsdi_wsize; 6178 if (len > copylen && mp != NULL) { 6179 /* 6180 * When a mirrored configuration needs to do 6181 * multiple writes to each mirror, all writes 6182 * except the last one must be a multiple of 6183 * 4 bytes. This is required so that the XDR 6184 * does not need padding. 6185 * If possible, clip the size to an exact 6186 * multiple of the mbuf length, so that the 6187 * split will be on an mbuf boundary. 6188 */ 6189 copylen &= 0xfffffffc; 6190 if (copylen > mp->m_len) 6191 copylen = copylen / mp->m_len * 6192 mp->m_len; 6193 } 6194 } 6195 NFSLOCKNODE(np); 6196 np->n_flag |= NDSCOMMIT; 6197 NFSUNLOCKNODE(np); 6198 if (len > copylen && docommit == 0) 6199 xfer = copylen; 6200 else 6201 xfer = len; 6202 if (docommit != 0) { 6203 if (error == 0) { 6204 /* 6205 * Do last mirrored DS commit with this thread. 6206 */ 6207 if (mirror < flp->nfsfl_mirrorcnt - 1) 6208 error = nfsio_commitds(vp, off, xfer, 6209 *dspp, fhp, dp->nfsdi_vers, 6210 dp->nfsdi_minorvers, drpc, tcred, 6211 p); 6212 else 6213 error = nfsrpc_commitds(vp, off, xfer, 6214 *dspp, fhp, dp->nfsdi_vers, 6215 dp->nfsdi_minorvers, tcred, p); 6216 NFSCL_DEBUG(4, "commitds=%d\n", error); 6217 if (error != 0 && error != EACCES && error != 6218 ESTALE) { 6219 NFSCL_DEBUG(4, 6220 "DS layreterr for commit\n"); 6221 nfscl_dserr(NFSV4OP_COMMIT, error, dp, 6222 lyp, *dspp); 6223 } 6224 } 6225 NFSCL_DEBUG(4, "aft nfsio_commitds=%d\n", error); 6226 if (error == 0) { 6227 /* 6228 * Set both eof and uio_resid = 0 to end any 6229 * loops. 6230 */ 6231 *eofp = 1; 6232 uiop->uio_resid = 0; 6233 } else { 6234 NFSLOCKNODE(np); 6235 np->n_flag &= ~NDSCOMMIT; 6236 NFSUNLOCKNODE(np); 6237 } 6238 } else if (rwflag == NFSV4OPEN_ACCESSREAD) { 6239 error = nfsrpc_readds(vp, uiop, stateidp, eofp, *dspp, 6240 off, xfer, fhp, 1, dp->nfsdi_vers, 6241 dp->nfsdi_minorvers, tcred, p); 6242 NFSCL_DEBUG(4, "readds=%d\n", error); 6243 if (error != 0 && error != EACCES && error != ESTALE) { 6244 NFSCL_DEBUG(4, "DS layreterr for read\n"); 6245 nfscl_dserr(NFSV4OP_READ, error, dp, lyp, 6246 *dspp); 6247 } 6248 } else { 6249 if (flp->nfsfl_mirrorcnt == 1) { 6250 error = nfsrpc_writeds(vp, uiop, iomode, 6251 must_commit, stateidp, *dspp, off, xfer, 6252 fhp, 0, 1, dp->nfsdi_vers, 6253 dp->nfsdi_minorvers, tcred, p); 6254 if (error == 0) { 6255 NFSLOCKCLSTATE(); 6256 lyp->nfsly_flags |= NFSLY_WRITTEN; 6257 NFSUNLOCKCLSTATE(); 6258 } 6259 } else { 6260 m = mp; 6261 if (xfer < len) { 6262 /* The mbuf list must be split. */ 6263 m2 = nfsm_split(mp, xfer); 6264 if (m2 != NULL) 6265 mp = m2; 6266 else { 6267 m_freem(mp); 6268 error = EIO; 6269 } 6270 } 6271 NFSCL_DEBUG(4, "mcopy len=%jd xfer=%jd\n", 6272 (uintmax_t)len, (uintmax_t)xfer); 6273 /* 6274 * Do last write to a mirrored DS with this 6275 * thread. 6276 */ 6277 if (error == 0) { 6278 if (mirror < flp->nfsfl_mirrorcnt - 1) 6279 error = nfsio_writedsmir(vp, 6280 iomode, must_commit, 6281 stateidp, *dspp, off, 6282 xfer, fhp, m, 6283 dp->nfsdi_vers, 6284 dp->nfsdi_minorvers, drpc, 6285 tcred, p); 6286 else 6287 error = nfsrpc_writedsmir(vp, 6288 iomode, must_commit, 6289 stateidp, *dspp, off, 6290 xfer, fhp, m, 6291 dp->nfsdi_vers, 6292 dp->nfsdi_minorvers, tcred, 6293 p); 6294 } 6295 NFSCL_DEBUG(4, "nfsio_writedsmir=%d\n", error); 6296 if (error != 0 && error != EACCES && error != 6297 ESTALE) { 6298 NFSCL_DEBUG(4, 6299 "DS layreterr for write\n"); 6300 nfscl_dserr(NFSV4OP_WRITE, error, dp, 6301 lyp, *dspp); 6302 } 6303 } 6304 } 6305 NFSCL_DEBUG(4, "aft read/writeds=%d\n", error); 6306 if (error == 0) { 6307 len -= xfer; 6308 off += xfer; 6309 } 6310 if ((dp->nfsdi_flags & NFSDI_TIGHTCOUPLED) == 0) 6311 NFSFREECRED(tcred); 6312 } 6313 NFSCL_DEBUG(4, "eo nfscl_dofflayoutio=%d\n", error); 6314 return (error); 6315 } 6316 6317 /* 6318 * The actual read RPC done to a DS. 6319 */ 6320 static int 6321 nfsrpc_readds(vnode_t vp, struct uio *uiop, nfsv4stateid_t *stateidp, int *eofp, 6322 struct nfsclds *dsp, uint64_t io_off, int len, struct nfsfh *fhp, int flex, 6323 int vers, int minorvers, struct ucred *cred, NFSPROC_T *p) 6324 { 6325 uint32_t *tl; 6326 int attrflag, error, retlen; 6327 struct nfsrv_descript nfsd; 6328 struct nfsmount *nmp = VFSTONFS(vp->v_mount); 6329 struct nfsrv_descript *nd = &nfsd; 6330 struct nfssockreq *nrp; 6331 struct nfsvattr na; 6332 6333 nd->nd_mrep = NULL; 6334 if (vers == 0 || vers == NFS_VER4) { 6335 nfscl_reqstart(nd, NFSPROC_READDS, nmp, fhp->nfh_fh, 6336 fhp->nfh_len, NULL, &dsp->nfsclds_sess, vers, minorvers); 6337 vers = NFS_VER4; 6338 NFSCL_DEBUG(4, "nfsrpc_readds: vers4 minvers=%d\n", minorvers); 6339 if (flex != 0) 6340 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID); 6341 else 6342 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSEQIDZERO); 6343 } else { 6344 nfscl_reqstart(nd, NFSPROC_READ, nmp, fhp->nfh_fh, 6345 fhp->nfh_len, NULL, &dsp->nfsclds_sess, vers, minorvers); 6346 NFSDECRGLOBAL(nfsstatsv1.rpccnt[NFSPROC_READ]); 6347 NFSINCRGLOBAL(nfsstatsv1.rpccnt[NFSPROC_READDS]); 6348 NFSCL_DEBUG(4, "nfsrpc_readds: vers3\n"); 6349 } 6350 NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED * 3); 6351 txdr_hyper(io_off, tl); 6352 *(tl + 2) = txdr_unsigned(len); 6353 nrp = dsp->nfsclds_sockp; 6354 NFSCL_DEBUG(4, "nfsrpc_readds: nrp=%p\n", nrp); 6355 if (nrp == NULL) 6356 /* If NULL, use the MDS socket. */ 6357 nrp = &nmp->nm_sockreq; 6358 error = newnfs_request(nd, nmp, NULL, nrp, vp, p, cred, 6359 NFS_PROG, vers, NULL, 1, NULL, &dsp->nfsclds_sess); 6360 NFSCL_DEBUG(4, "nfsrpc_readds: stat=%d err=%d\n", nd->nd_repstat, 6361 error); 6362 if (error != 0) 6363 return (error); 6364 if (vers == NFS_VER3) { 6365 error = nfscl_postop_attr(nd, &na, &attrflag, NULL); 6366 NFSCL_DEBUG(4, "nfsrpc_readds: postop=%d\n", error); 6367 if (error != 0) 6368 goto nfsmout; 6369 } 6370 if (nd->nd_repstat != 0) { 6371 error = nd->nd_repstat; 6372 goto nfsmout; 6373 } 6374 if (vers == NFS_VER3) { 6375 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED); 6376 *eofp = fxdr_unsigned(int, *(tl + 1)); 6377 } else { 6378 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 6379 *eofp = fxdr_unsigned(int, *tl); 6380 } 6381 NFSM_STRSIZ(retlen, len); 6382 NFSCL_DEBUG(4, "nfsrpc_readds: retlen=%d eof=%d\n", retlen, *eofp); 6383 error = nfsm_mbufuio(nd, uiop, retlen); 6384 nfsmout: 6385 if (nd->nd_mrep != NULL) 6386 m_freem(nd->nd_mrep); 6387 return (error); 6388 } 6389 6390 /* 6391 * The actual write RPC done to a DS. 6392 */ 6393 static int 6394 nfsrpc_writeds(vnode_t vp, struct uio *uiop, int *iomode, int *must_commit, 6395 nfsv4stateid_t *stateidp, struct nfsclds *dsp, uint64_t io_off, int len, 6396 struct nfsfh *fhp, int commit_thru_mds, int flex, int vers, int minorvers, 6397 struct ucred *cred, NFSPROC_T *p) 6398 { 6399 uint32_t *tl; 6400 struct nfsmount *nmp = VFSTONFS(vp->v_mount); 6401 int attrflag, error, rlen, commit, committed = NFSWRITE_FILESYNC; 6402 int32_t backup; 6403 struct nfsrv_descript nfsd; 6404 struct nfsrv_descript *nd = &nfsd; 6405 struct nfssockreq *nrp; 6406 struct nfsvattr na; 6407 6408 KASSERT(uiop->uio_iovcnt == 1, ("nfs: writerpc iovcnt > 1")); 6409 nd->nd_mrep = NULL; 6410 if (vers == 0 || vers == NFS_VER4) { 6411 nfscl_reqstart(nd, NFSPROC_WRITEDS, nmp, fhp->nfh_fh, 6412 fhp->nfh_len, NULL, &dsp->nfsclds_sess, vers, minorvers); 6413 NFSCL_DEBUG(4, "nfsrpc_writeds: vers4 minvers=%d\n", minorvers); 6414 vers = NFS_VER4; 6415 if (flex != 0) 6416 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID); 6417 else 6418 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSEQIDZERO); 6419 NFSM_BUILD(tl, uint32_t *, NFSX_HYPER + 2 * NFSX_UNSIGNED); 6420 } else { 6421 nfscl_reqstart(nd, NFSPROC_WRITE, nmp, fhp->nfh_fh, 6422 fhp->nfh_len, NULL, &dsp->nfsclds_sess, vers, minorvers); 6423 NFSDECRGLOBAL(nfsstatsv1.rpccnt[NFSPROC_WRITE]); 6424 NFSINCRGLOBAL(nfsstatsv1.rpccnt[NFSPROC_WRITEDS]); 6425 NFSCL_DEBUG(4, "nfsrpc_writeds: vers3\n"); 6426 NFSM_BUILD(tl, uint32_t *, NFSX_HYPER + 3 * NFSX_UNSIGNED); 6427 } 6428 txdr_hyper(io_off, tl); 6429 tl += 2; 6430 if (vers == NFS_VER3) 6431 *tl++ = txdr_unsigned(len); 6432 *tl++ = txdr_unsigned(*iomode); 6433 *tl = txdr_unsigned(len); 6434 nfsm_uiombuf(nd, uiop, len); 6435 nrp = dsp->nfsclds_sockp; 6436 if (nrp == NULL) 6437 /* If NULL, use the MDS socket. */ 6438 nrp = &nmp->nm_sockreq; 6439 error = newnfs_request(nd, nmp, NULL, nrp, vp, p, cred, 6440 NFS_PROG, vers, NULL, 1, NULL, &dsp->nfsclds_sess); 6441 NFSCL_DEBUG(4, "nfsrpc_writeds: err=%d stat=%d\n", error, 6442 nd->nd_repstat); 6443 if (error != 0) 6444 return (error); 6445 if (nd->nd_repstat != 0) { 6446 /* 6447 * In case the rpc gets retried, roll 6448 * the uio fields changed by nfsm_uiombuf() 6449 * back. 6450 */ 6451 uiop->uio_offset -= len; 6452 uiop->uio_resid += len; 6453 uiop->uio_iov->iov_base = (char *)uiop->uio_iov->iov_base - len; 6454 uiop->uio_iov->iov_len += len; 6455 error = nd->nd_repstat; 6456 } else { 6457 if (vers == NFS_VER3) { 6458 error = nfscl_wcc_data(nd, vp, &na, &attrflag, NULL, 6459 NULL); 6460 NFSCL_DEBUG(4, "nfsrpc_writeds: wcc_data=%d\n", error); 6461 if (error != 0) 6462 goto nfsmout; 6463 } 6464 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED + NFSX_VERF); 6465 rlen = fxdr_unsigned(int, *tl++); 6466 NFSCL_DEBUG(4, "nfsrpc_writeds: len=%d rlen=%d\n", len, rlen); 6467 if (rlen == 0) { 6468 error = NFSERR_IO; 6469 goto nfsmout; 6470 } else if (rlen < len) { 6471 backup = len - rlen; 6472 uiop->uio_iov->iov_base = 6473 (char *)uiop->uio_iov->iov_base - backup; 6474 uiop->uio_iov->iov_len += backup; 6475 uiop->uio_offset -= backup; 6476 uiop->uio_resid += backup; 6477 len = rlen; 6478 } 6479 commit = fxdr_unsigned(int, *tl++); 6480 6481 /* 6482 * Return the lowest commitment level 6483 * obtained by any of the RPCs. 6484 */ 6485 if (committed == NFSWRITE_FILESYNC) 6486 committed = commit; 6487 else if (committed == NFSWRITE_DATASYNC && 6488 commit == NFSWRITE_UNSTABLE) 6489 committed = commit; 6490 if (commit_thru_mds != 0) { 6491 NFSLOCKMNT(nmp); 6492 if (!NFSHASWRITEVERF(nmp)) { 6493 NFSBCOPY(tl, nmp->nm_verf, NFSX_VERF); 6494 NFSSETWRITEVERF(nmp); 6495 } else if (NFSBCMP(tl, nmp->nm_verf, NFSX_VERF)) { 6496 *must_commit = 1; 6497 NFSBCOPY(tl, nmp->nm_verf, NFSX_VERF); 6498 } 6499 NFSUNLOCKMNT(nmp); 6500 } else { 6501 NFSLOCKDS(dsp); 6502 if ((dsp->nfsclds_flags & NFSCLDS_HASWRITEVERF) == 0) { 6503 NFSBCOPY(tl, dsp->nfsclds_verf, NFSX_VERF); 6504 dsp->nfsclds_flags |= NFSCLDS_HASWRITEVERF; 6505 } else if (NFSBCMP(tl, dsp->nfsclds_verf, NFSX_VERF)) { 6506 *must_commit = 1; 6507 NFSBCOPY(tl, dsp->nfsclds_verf, NFSX_VERF); 6508 } 6509 NFSUNLOCKDS(dsp); 6510 } 6511 } 6512 nfsmout: 6513 if (nd->nd_mrep != NULL) 6514 m_freem(nd->nd_mrep); 6515 *iomode = committed; 6516 if (nd->nd_repstat != 0 && error == 0) 6517 error = nd->nd_repstat; 6518 return (error); 6519 } 6520 6521 /* 6522 * The actual write RPC done to a DS. 6523 * This variant is called from a separate kernel process for mirrors. 6524 * Any short write is considered an IO error. 6525 */ 6526 static int 6527 nfsrpc_writedsmir(vnode_t vp, int *iomode, int *must_commit, 6528 nfsv4stateid_t *stateidp, struct nfsclds *dsp, uint64_t io_off, int len, 6529 struct nfsfh *fhp, struct mbuf *m, int vers, int minorvers, 6530 struct ucred *cred, NFSPROC_T *p) 6531 { 6532 uint32_t *tl; 6533 struct nfsmount *nmp = VFSTONFS(vp->v_mount); 6534 int attrflag, error, commit, committed = NFSWRITE_FILESYNC, rlen; 6535 struct nfsrv_descript nfsd; 6536 struct nfsrv_descript *nd = &nfsd; 6537 struct nfssockreq *nrp; 6538 struct nfsvattr na; 6539 6540 nd->nd_mrep = NULL; 6541 if (vers == 0 || vers == NFS_VER4) { 6542 nfscl_reqstart(nd, NFSPROC_WRITEDS, nmp, fhp->nfh_fh, 6543 fhp->nfh_len, NULL, &dsp->nfsclds_sess, vers, minorvers); 6544 vers = NFS_VER4; 6545 NFSCL_DEBUG(4, "nfsrpc_writedsmir: vers4 minvers=%d\n", 6546 minorvers); 6547 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID); 6548 NFSM_BUILD(tl, uint32_t *, NFSX_HYPER + 2 * NFSX_UNSIGNED); 6549 } else { 6550 nfscl_reqstart(nd, NFSPROC_WRITE, nmp, fhp->nfh_fh, 6551 fhp->nfh_len, NULL, &dsp->nfsclds_sess, vers, minorvers); 6552 NFSDECRGLOBAL(nfsstatsv1.rpccnt[NFSPROC_WRITE]); 6553 NFSINCRGLOBAL(nfsstatsv1.rpccnt[NFSPROC_WRITEDS]); 6554 NFSCL_DEBUG(4, "nfsrpc_writedsmir: vers3\n"); 6555 NFSM_BUILD(tl, uint32_t *, NFSX_HYPER + 3 * NFSX_UNSIGNED); 6556 } 6557 txdr_hyper(io_off, tl); 6558 tl += 2; 6559 if (vers == NFS_VER3) 6560 *tl++ = txdr_unsigned(len); 6561 *tl++ = txdr_unsigned(*iomode); 6562 *tl = txdr_unsigned(len); 6563 if (len > 0) { 6564 /* Put data in mbuf chain. */ 6565 nd->nd_mb->m_next = m; 6566 } 6567 nrp = dsp->nfsclds_sockp; 6568 if (nrp == NULL) 6569 /* If NULL, use the MDS socket. */ 6570 nrp = &nmp->nm_sockreq; 6571 error = newnfs_request(nd, nmp, NULL, nrp, vp, p, cred, 6572 NFS_PROG, vers, NULL, 1, NULL, &dsp->nfsclds_sess); 6573 NFSCL_DEBUG(4, "nfsrpc_writedsmir: err=%d stat=%d\n", error, 6574 nd->nd_repstat); 6575 if (error != 0) 6576 return (error); 6577 if (nd->nd_repstat != 0) 6578 error = nd->nd_repstat; 6579 else { 6580 if (vers == NFS_VER3) { 6581 error = nfscl_wcc_data(nd, vp, &na, &attrflag, NULL, 6582 NULL); 6583 NFSCL_DEBUG(4, "nfsrpc_writedsmir: wcc_data=%d\n", 6584 error); 6585 if (error != 0) 6586 goto nfsmout; 6587 } 6588 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED + NFSX_VERF); 6589 rlen = fxdr_unsigned(int, *tl++); 6590 NFSCL_DEBUG(4, "nfsrpc_writedsmir: len=%d rlen=%d\n", len, 6591 rlen); 6592 if (rlen != len) { 6593 error = NFSERR_IO; 6594 NFSCL_DEBUG(4, "nfsrpc_writedsmir: len=%d rlen=%d\n", 6595 len, rlen); 6596 goto nfsmout; 6597 } 6598 commit = fxdr_unsigned(int, *tl++); 6599 6600 /* 6601 * Return the lowest commitment level 6602 * obtained by any of the RPCs. 6603 */ 6604 if (committed == NFSWRITE_FILESYNC) 6605 committed = commit; 6606 else if (committed == NFSWRITE_DATASYNC && 6607 commit == NFSWRITE_UNSTABLE) 6608 committed = commit; 6609 NFSLOCKDS(dsp); 6610 if ((dsp->nfsclds_flags & NFSCLDS_HASWRITEVERF) == 0) { 6611 NFSBCOPY(tl, dsp->nfsclds_verf, NFSX_VERF); 6612 dsp->nfsclds_flags |= NFSCLDS_HASWRITEVERF; 6613 } else if (NFSBCMP(tl, dsp->nfsclds_verf, NFSX_VERF)) { 6614 *must_commit = 1; 6615 NFSBCOPY(tl, dsp->nfsclds_verf, NFSX_VERF); 6616 } 6617 NFSUNLOCKDS(dsp); 6618 } 6619 nfsmout: 6620 if (nd->nd_mrep != NULL) 6621 m_freem(nd->nd_mrep); 6622 *iomode = committed; 6623 if (nd->nd_repstat != 0 && error == 0) 6624 error = nd->nd_repstat; 6625 return (error); 6626 } 6627 6628 /* 6629 * Start up the thread that will execute nfsrpc_writedsmir(). 6630 */ 6631 static void 6632 start_writedsmir(void *arg, int pending) 6633 { 6634 struct nfsclwritedsdorpc *drpc; 6635 6636 drpc = (struct nfsclwritedsdorpc *)arg; 6637 drpc->err = nfsrpc_writedsmir(drpc->vp, &drpc->iomode, 6638 &drpc->must_commit, drpc->stateidp, drpc->dsp, drpc->off, drpc->len, 6639 drpc->fhp, drpc->m, drpc->vers, drpc->minorvers, drpc->cred, 6640 drpc->p); 6641 drpc->done = 1; 6642 NFSCL_DEBUG(4, "start_writedsmir: err=%d\n", drpc->err); 6643 } 6644 6645 /* 6646 * Set up the write DS mirror call for the pNFS I/O thread. 6647 */ 6648 static int 6649 nfsio_writedsmir(vnode_t vp, int *iomode, int *must_commit, 6650 nfsv4stateid_t *stateidp, struct nfsclds *dsp, uint64_t off, int len, 6651 struct nfsfh *fhp, struct mbuf *m, int vers, int minorvers, 6652 struct nfsclwritedsdorpc *drpc, struct ucred *cred, NFSPROC_T *p) 6653 { 6654 int error, ret; 6655 6656 error = 0; 6657 drpc->done = 0; 6658 drpc->vp = vp; 6659 drpc->iomode = *iomode; 6660 drpc->must_commit = *must_commit; 6661 drpc->stateidp = stateidp; 6662 drpc->dsp = dsp; 6663 drpc->off = off; 6664 drpc->len = len; 6665 drpc->fhp = fhp; 6666 drpc->m = m; 6667 drpc->vers = vers; 6668 drpc->minorvers = minorvers; 6669 drpc->cred = cred; 6670 drpc->p = p; 6671 drpc->inprog = 0; 6672 ret = EIO; 6673 if (nfs_pnfsiothreads != 0) { 6674 ret = nfs_pnfsio(start_writedsmir, drpc); 6675 NFSCL_DEBUG(4, "nfsio_writedsmir: nfs_pnfsio=%d\n", ret); 6676 } 6677 if (ret != 0) 6678 error = nfsrpc_writedsmir(vp, iomode, must_commit, stateidp, 6679 dsp, off, len, fhp, m, vers, minorvers, cred, p); 6680 NFSCL_DEBUG(4, "nfsio_writedsmir: error=%d\n", error); 6681 return (error); 6682 } 6683 6684 /* 6685 * Free up the nfsclds structure. 6686 */ 6687 void 6688 nfscl_freenfsclds(struct nfsclds *dsp) 6689 { 6690 int i; 6691 6692 if (dsp == NULL) 6693 return; 6694 if (dsp->nfsclds_sockp != NULL) { 6695 NFSFREECRED(dsp->nfsclds_sockp->nr_cred); 6696 NFSFREEMUTEX(&dsp->nfsclds_sockp->nr_mtx); 6697 free(dsp->nfsclds_sockp->nr_nam, M_SONAME); 6698 free(dsp->nfsclds_sockp, M_NFSSOCKREQ); 6699 } 6700 NFSFREEMUTEX(&dsp->nfsclds_mtx); 6701 NFSFREEMUTEX(&dsp->nfsclds_sess.nfsess_mtx); 6702 for (i = 0; i < NFSV4_CBSLOTS; i++) { 6703 if (dsp->nfsclds_sess.nfsess_cbslots[i].nfssl_reply != NULL) 6704 m_freem( 6705 dsp->nfsclds_sess.nfsess_cbslots[i].nfssl_reply); 6706 } 6707 free(dsp, M_NFSCLDS); 6708 } 6709 6710 static enum nfsclds_state 6711 nfscl_getsameserver(struct nfsmount *nmp, struct nfsclds *newdsp, 6712 struct nfsclds **retdspp, uint32_t *sequencep) 6713 { 6714 struct nfsclds *dsp; 6715 int fndseq; 6716 6717 /* 6718 * Search the list of nfsclds structures for one with the same 6719 * server. 6720 */ 6721 fndseq = 0; 6722 TAILQ_FOREACH(dsp, &nmp->nm_sess, nfsclds_list) { 6723 if (dsp->nfsclds_servownlen == newdsp->nfsclds_servownlen && 6724 dsp->nfsclds_servownlen != 0 && 6725 !NFSBCMP(dsp->nfsclds_serverown, newdsp->nfsclds_serverown, 6726 dsp->nfsclds_servownlen) && 6727 dsp->nfsclds_sess.nfsess_defunct == 0) { 6728 NFSCL_DEBUG(4, "fnd same fdsp=%p dsp=%p flg=0x%x\n", 6729 TAILQ_FIRST(&nmp->nm_sess), dsp, 6730 dsp->nfsclds_flags); 6731 if (fndseq == 0) { 6732 /* Get sequenceid# from first entry. */ 6733 *sequencep = 6734 dsp->nfsclds_sess.nfsess_sequenceid; 6735 fndseq = 1; 6736 } 6737 /* Server major id matches. */ 6738 if ((dsp->nfsclds_flags & NFSCLDS_DS) != 0) { 6739 *retdspp = dsp; 6740 return (NFSDSP_USETHISSESSION); 6741 } 6742 } 6743 } 6744 if (fndseq != 0) 6745 return (NFSDSP_SEQTHISSESSION); 6746 return (NFSDSP_NOTFOUND); 6747 } 6748 6749 /* 6750 * NFS commit rpc to a NFSv4.1 DS. 6751 */ 6752 static int 6753 nfsrpc_commitds(vnode_t vp, uint64_t offset, int cnt, struct nfsclds *dsp, 6754 struct nfsfh *fhp, int vers, int minorvers, struct ucred *cred, 6755 NFSPROC_T *p) 6756 { 6757 uint32_t *tl; 6758 struct nfsrv_descript nfsd, *nd = &nfsd; 6759 struct nfsmount *nmp = VFSTONFS(vp->v_mount); 6760 struct nfssockreq *nrp; 6761 struct nfsvattr na; 6762 int attrflag, error; 6763 6764 nd->nd_mrep = NULL; 6765 if (vers == 0 || vers == NFS_VER4) { 6766 nfscl_reqstart(nd, NFSPROC_COMMITDS, nmp, fhp->nfh_fh, 6767 fhp->nfh_len, NULL, &dsp->nfsclds_sess, vers, minorvers); 6768 vers = NFS_VER4; 6769 } else { 6770 nfscl_reqstart(nd, NFSPROC_COMMIT, nmp, fhp->nfh_fh, 6771 fhp->nfh_len, NULL, &dsp->nfsclds_sess, vers, minorvers); 6772 NFSDECRGLOBAL(nfsstatsv1.rpccnt[NFSPROC_COMMIT]); 6773 NFSINCRGLOBAL(nfsstatsv1.rpccnt[NFSPROC_COMMITDS]); 6774 } 6775 NFSCL_DEBUG(4, "nfsrpc_commitds: vers=%d minvers=%d\n", vers, 6776 minorvers); 6777 NFSM_BUILD(tl, uint32_t *, NFSX_HYPER + NFSX_UNSIGNED); 6778 txdr_hyper(offset, tl); 6779 tl += 2; 6780 *tl = txdr_unsigned(cnt); 6781 nrp = dsp->nfsclds_sockp; 6782 if (nrp == NULL) 6783 /* If NULL, use the MDS socket. */ 6784 nrp = &nmp->nm_sockreq; 6785 error = newnfs_request(nd, nmp, NULL, nrp, vp, p, cred, 6786 NFS_PROG, vers, NULL, 1, NULL, &dsp->nfsclds_sess); 6787 NFSCL_DEBUG(4, "nfsrpc_commitds: err=%d stat=%d\n", error, 6788 nd->nd_repstat); 6789 if (error != 0) 6790 return (error); 6791 if (nd->nd_repstat == 0) { 6792 if (vers == NFS_VER3) { 6793 error = nfscl_wcc_data(nd, vp, &na, &attrflag, NULL, 6794 NULL); 6795 NFSCL_DEBUG(4, "nfsrpc_commitds: wccdata=%d\n", error); 6796 if (error != 0) 6797 goto nfsmout; 6798 } 6799 NFSM_DISSECT(tl, u_int32_t *, NFSX_VERF); 6800 NFSLOCKDS(dsp); 6801 if (NFSBCMP(tl, dsp->nfsclds_verf, NFSX_VERF)) { 6802 NFSBCOPY(tl, dsp->nfsclds_verf, NFSX_VERF); 6803 error = NFSERR_STALEWRITEVERF; 6804 } 6805 NFSUNLOCKDS(dsp); 6806 } 6807 nfsmout: 6808 if (error == 0 && nd->nd_repstat != 0) 6809 error = nd->nd_repstat; 6810 m_freem(nd->nd_mrep); 6811 return (error); 6812 } 6813 6814 /* 6815 * Start up the thread that will execute nfsrpc_commitds(). 6816 */ 6817 static void 6818 start_commitds(void *arg, int pending) 6819 { 6820 struct nfsclwritedsdorpc *drpc; 6821 6822 drpc = (struct nfsclwritedsdorpc *)arg; 6823 drpc->err = nfsrpc_commitds(drpc->vp, drpc->off, drpc->len, 6824 drpc->dsp, drpc->fhp, drpc->vers, drpc->minorvers, drpc->cred, 6825 drpc->p); 6826 drpc->done = 1; 6827 NFSCL_DEBUG(4, "start_commitds: err=%d\n", drpc->err); 6828 } 6829 6830 /* 6831 * Set up the commit DS mirror call for the pNFS I/O thread. 6832 */ 6833 static int 6834 nfsio_commitds(vnode_t vp, uint64_t offset, int cnt, struct nfsclds *dsp, 6835 struct nfsfh *fhp, int vers, int minorvers, 6836 struct nfsclwritedsdorpc *drpc, struct ucred *cred, NFSPROC_T *p) 6837 { 6838 int error, ret; 6839 6840 error = 0; 6841 drpc->done = 0; 6842 drpc->vp = vp; 6843 drpc->off = offset; 6844 drpc->len = cnt; 6845 drpc->dsp = dsp; 6846 drpc->fhp = fhp; 6847 drpc->vers = vers; 6848 drpc->minorvers = minorvers; 6849 drpc->cred = cred; 6850 drpc->p = p; 6851 drpc->inprog = 0; 6852 ret = EIO; 6853 if (nfs_pnfsiothreads != 0) { 6854 ret = nfs_pnfsio(start_commitds, drpc); 6855 NFSCL_DEBUG(4, "nfsio_commitds: nfs_pnfsio=%d\n", ret); 6856 } 6857 if (ret != 0) 6858 error = nfsrpc_commitds(vp, offset, cnt, dsp, fhp, vers, 6859 minorvers, cred, p); 6860 NFSCL_DEBUG(4, "nfsio_commitds: error=%d\n", error); 6861 return (error); 6862 } 6863 6864 /* 6865 * NFS Advise rpc 6866 */ 6867 int 6868 nfsrpc_advise(vnode_t vp, off_t offset, uint64_t cnt, int advise, 6869 struct ucred *cred, NFSPROC_T *p) 6870 { 6871 u_int32_t *tl; 6872 struct nfsrv_descript nfsd, *nd = &nfsd; 6873 nfsattrbit_t hints; 6874 int error; 6875 6876 NFSZERO_ATTRBIT(&hints); 6877 if (advise == POSIX_FADV_WILLNEED) 6878 NFSSETBIT_ATTRBIT(&hints, NFSV4IOHINT_WILLNEED); 6879 else if (advise == POSIX_FADV_DONTNEED) 6880 NFSSETBIT_ATTRBIT(&hints, NFSV4IOHINT_DONTNEED); 6881 else 6882 return (0); 6883 NFSCL_REQSTART(nd, NFSPROC_IOADVISE, vp); 6884 nfsm_stateidtom(nd, NULL, NFSSTATEID_PUTALLZERO); 6885 NFSM_BUILD(tl, uint32_t *, 2 * NFSX_HYPER); 6886 txdr_hyper(offset, tl); 6887 tl += 2; 6888 txdr_hyper(cnt, tl); 6889 nfsrv_putattrbit(nd, &hints); 6890 error = nfscl_request(nd, vp, p, cred, NULL); 6891 if (error != 0) 6892 return (error); 6893 if (nd->nd_repstat != 0) 6894 error = nd->nd_repstat; 6895 m_freem(nd->nd_mrep); 6896 return (error); 6897 } 6898 6899 #ifdef notyet 6900 /* 6901 * NFS advise rpc to a NFSv4.2 DS. 6902 */ 6903 static int 6904 nfsrpc_adviseds(vnode_t vp, uint64_t offset, int cnt, int advise, 6905 struct nfsclds *dsp, struct nfsfh *fhp, int vers, int minorvers, 6906 struct ucred *cred, NFSPROC_T *p) 6907 { 6908 uint32_t *tl; 6909 struct nfsrv_descript nfsd, *nd = &nfsd; 6910 struct nfsmount *nmp = VFSTONFS(vp->v_mount); 6911 struct nfssockreq *nrp; 6912 nfsattrbit_t hints; 6913 int error; 6914 6915 /* For NFS DSs prior to NFSv4.2, just return OK. */ 6916 if (vers == NFS_VER3 || minorversion < NFSV42_MINORVERSION) 6917 return (0); 6918 NFSZERO_ATTRBIT(&hints); 6919 if (advise == POSIX_FADV_WILLNEED) 6920 NFSSETBIT_ATTRBIT(&hints, NFSV4IOHINT_WILLNEED); 6921 else if (advise == POSIX_FADV_DONTNEED) 6922 NFSSETBIT_ATTRBIT(&hints, NFSV4IOHINT_DONTNEED); 6923 else 6924 return (0); 6925 nd->nd_mrep = NULL; 6926 nfscl_reqstart(nd, NFSPROC_IOADVISEDS, nmp, fhp->nfh_fh, 6927 fhp->nfh_len, NULL, &dsp->nfsclds_sess, vers, minorvers); 6928 vers = NFS_VER4; 6929 NFSCL_DEBUG(4, "nfsrpc_adviseds: vers=%d minvers=%d\n", vers, 6930 minorvers); 6931 nfsm_stateidtom(nd, NULL, NFSSTATEID_PUTALLZERO); 6932 NFSM_BUILD(tl, uint32_t *, NFSX_HYPER + NFSX_UNSIGNED); 6933 txdr_hyper(offset, tl); 6934 tl += 2; 6935 *tl = txdr_unsigned(cnt); 6936 nfsrv_putattrbit(nd, &hints); 6937 nrp = dsp->nfsclds_sockp; 6938 if (nrp == NULL) 6939 /* If NULL, use the MDS socket. */ 6940 nrp = &nmp->nm_sockreq; 6941 error = newnfs_request(nd, nmp, NULL, nrp, vp, p, cred, 6942 NFS_PROG, vers, NULL, 1, NULL, &dsp->nfsclds_sess); 6943 NFSCL_DEBUG(4, "nfsrpc_adviseds: err=%d stat=%d\n", error, 6944 nd->nd_repstat); 6945 if (error != 0) 6946 return (error); 6947 if (nd->nd_repstat != 0) 6948 error = nd->nd_repstat; 6949 m_freem(nd->nd_mrep); 6950 return (error); 6951 } 6952 6953 /* 6954 * Start up the thread that will execute nfsrpc_commitds(). 6955 */ 6956 static void 6957 start_adviseds(void *arg, int pending) 6958 { 6959 struct nfsclwritedsdorpc *drpc; 6960 6961 drpc = (struct nfsclwritedsdorpc *)arg; 6962 drpc->err = nfsrpc_adviseds(drpc->vp, drpc->off, drpc->len, 6963 drpc->advise, drpc->dsp, drpc->fhp, drpc->vers, drpc->minorvers, 6964 drpc->cred, drpc->p); 6965 drpc->done = 1; 6966 NFSCL_DEBUG(4, "start_adviseds: err=%d\n", drpc->err); 6967 } 6968 6969 /* 6970 * Set up the commit DS mirror call for the pNFS I/O thread. 6971 */ 6972 static int 6973 nfsio_adviseds(vnode_t vp, uint64_t offset, int cnt, int advise, 6974 struct nfsclds *dsp, struct nfsfh *fhp, int vers, int minorvers, 6975 struct nfsclwritedsdorpc *drpc, struct ucred *cred, NFSPROC_T *p) 6976 { 6977 int error, ret; 6978 6979 error = 0; 6980 drpc->done = 0; 6981 drpc->vp = vp; 6982 drpc->off = offset; 6983 drpc->len = cnt; 6984 drpc->advise = advise; 6985 drpc->dsp = dsp; 6986 drpc->fhp = fhp; 6987 drpc->vers = vers; 6988 drpc->minorvers = minorvers; 6989 drpc->cred = cred; 6990 drpc->p = p; 6991 drpc->inprog = 0; 6992 ret = EIO; 6993 if (nfs_pnfsiothreads != 0) { 6994 ret = nfs_pnfsio(start_adviseds, drpc); 6995 NFSCL_DEBUG(4, "nfsio_adviseds: nfs_pnfsio=%d\n", ret); 6996 } 6997 if (ret != 0) 6998 error = nfsrpc_adviseds(vp, offset, cnt, advise, dsp, fhp, vers, 6999 minorvers, cred, p); 7000 NFSCL_DEBUG(4, "nfsio_adviseds: error=%d\n", error); 7001 return (error); 7002 } 7003 #endif /* notyet */ 7004 7005 /* 7006 * Do the Allocate operation, retrying for recovery. 7007 */ 7008 int 7009 nfsrpc_allocate(vnode_t vp, off_t off, off_t len, struct nfsvattr *nap, 7010 int *attrflagp, struct ucred *cred, NFSPROC_T *p, void *stuff) 7011 { 7012 int error, expireret = 0, retrycnt, nostateid; 7013 uint32_t clidrev = 0; 7014 struct nfsmount *nmp = VFSTONFS(vp->v_mount); 7015 struct nfsfh *nfhp = NULL; 7016 nfsv4stateid_t stateid; 7017 off_t tmp_off; 7018 void *lckp; 7019 7020 if (len < 0) 7021 return (EINVAL); 7022 if (len == 0) 7023 return (0); 7024 tmp_off = off + len; 7025 NFSLOCKMNT(nmp); 7026 if (tmp_off > nmp->nm_maxfilesize || tmp_off < off) { 7027 NFSUNLOCKMNT(nmp); 7028 return (EFBIG); 7029 } 7030 if (nmp->nm_clp != NULL) 7031 clidrev = nmp->nm_clp->nfsc_clientidrev; 7032 NFSUNLOCKMNT(nmp); 7033 nfhp = VTONFS(vp)->n_fhp; 7034 retrycnt = 0; 7035 do { 7036 lckp = NULL; 7037 nostateid = 0; 7038 nfscl_getstateid(vp, nfhp->nfh_fh, nfhp->nfh_len, 7039 NFSV4OPEN_ACCESSWRITE, 0, cred, p, &stateid, &lckp); 7040 if (stateid.other[0] == 0 && stateid.other[1] == 0 && 7041 stateid.other[2] == 0) { 7042 nostateid = 1; 7043 NFSCL_DEBUG(1, "stateid0 in allocate\n"); 7044 } 7045 7046 /* 7047 * Not finding a stateid should probably never happen, 7048 * but just return an error for this case. 7049 */ 7050 if (nostateid != 0) 7051 error = EIO; 7052 else 7053 error = nfsrpc_allocaterpc(vp, off, len, &stateid, 7054 nap, attrflagp, cred, p, stuff); 7055 if (error == NFSERR_STALESTATEID) 7056 nfscl_initiate_recovery(nmp->nm_clp); 7057 if (lckp != NULL) 7058 nfscl_lockderef(lckp); 7059 if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 7060 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 7061 error == NFSERR_OLDSTATEID || error == NFSERR_BADSESSION) { 7062 (void) nfs_catnap(PZERO, error, "nfs_allocate"); 7063 } else if ((error == NFSERR_EXPIRED || 7064 error == NFSERR_BADSTATEID) && clidrev != 0) { 7065 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, p); 7066 } 7067 retrycnt++; 7068 } while (error == NFSERR_GRACE || error == NFSERR_DELAY || 7069 error == NFSERR_STALESTATEID || error == NFSERR_BADSESSION || 7070 error == NFSERR_STALEDONTRECOVER || 7071 (error == NFSERR_OLDSTATEID && retrycnt < 20) || 7072 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) && 7073 expireret == 0 && clidrev != 0 && retrycnt < 4)); 7074 if (error != 0 && retrycnt >= 4) 7075 error = EIO; 7076 return (error); 7077 } 7078 7079 /* 7080 * The allocate RPC. 7081 */ 7082 static int 7083 nfsrpc_allocaterpc(vnode_t vp, off_t off, off_t len, nfsv4stateid_t *stateidp, 7084 struct nfsvattr *nap, int *attrflagp, struct ucred *cred, NFSPROC_T *p, 7085 void *stuff) 7086 { 7087 uint32_t *tl; 7088 int error; 7089 struct nfsrv_descript nfsd; 7090 struct nfsrv_descript *nd = &nfsd; 7091 nfsattrbit_t attrbits; 7092 7093 *attrflagp = 0; 7094 NFSCL_REQSTART(nd, NFSPROC_ALLOCATE, vp); 7095 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID); 7096 NFSM_BUILD(tl, uint32_t *, 2 * NFSX_HYPER + NFSX_UNSIGNED); 7097 txdr_hyper(off, tl); tl += 2; 7098 txdr_hyper(len, tl); tl += 2; 7099 *tl = txdr_unsigned(NFSV4OP_GETATTR); 7100 NFSGETATTR_ATTRBIT(&attrbits); 7101 nfsrv_putattrbit(nd, &attrbits); 7102 error = nfscl_request(nd, vp, p, cred, stuff); 7103 if (error != 0) 7104 return (error); 7105 if (nd->nd_repstat == 0) { 7106 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 7107 error = nfsm_loadattr(nd, nap); 7108 if (error == 0) 7109 *attrflagp = NFS_LATTR_NOSHRINK; 7110 } else 7111 error = nd->nd_repstat; 7112 nfsmout: 7113 m_freem(nd->nd_mrep); 7114 return (error); 7115 } 7116 7117 /* 7118 * Set up the XDR arguments for the LayoutGet operation. 7119 */ 7120 static void 7121 nfsrv_setuplayoutget(struct nfsrv_descript *nd, int iomode, uint64_t offset, 7122 uint64_t len, uint64_t minlen, nfsv4stateid_t *stateidp, int layouttype, 7123 int layoutlen, int usecurstateid) 7124 { 7125 uint32_t *tl; 7126 7127 NFSM_BUILD(tl, uint32_t *, 4 * NFSX_UNSIGNED + 3 * NFSX_HYPER + 7128 NFSX_STATEID); 7129 *tl++ = newnfs_false; /* Don't signal availability. */ 7130 *tl++ = txdr_unsigned(layouttype); 7131 *tl++ = txdr_unsigned(iomode); 7132 txdr_hyper(offset, tl); 7133 tl += 2; 7134 txdr_hyper(len, tl); 7135 tl += 2; 7136 txdr_hyper(minlen, tl); 7137 tl += 2; 7138 if (usecurstateid != 0) { 7139 /* Special stateid for Current stateid. */ 7140 *tl++ = txdr_unsigned(1); 7141 *tl++ = 0; 7142 *tl++ = 0; 7143 *tl++ = 0; 7144 } else { 7145 *tl++ = txdr_unsigned(stateidp->seqid); 7146 NFSCL_DEBUG(4, "layget seq=%d\n", (int)stateidp->seqid); 7147 *tl++ = stateidp->other[0]; 7148 *tl++ = stateidp->other[1]; 7149 *tl++ = stateidp->other[2]; 7150 } 7151 *tl = txdr_unsigned(layoutlen); 7152 } 7153 7154 /* 7155 * Parse the reply for a successful LayoutGet operation. 7156 */ 7157 static int 7158 nfsrv_parselayoutget(struct nfsmount *nmp, struct nfsrv_descript *nd, 7159 nfsv4stateid_t *stateidp, int *retonclosep, struct nfsclflayouthead *flhp) 7160 { 7161 uint32_t *tl; 7162 struct nfsclflayout *flp, *prevflp, *tflp; 7163 int cnt, error, fhcnt, gotiomode, i, iomode, j, k, l, laytype, nfhlen; 7164 int m, mirrorcnt; 7165 uint64_t retlen, off; 7166 struct nfsfh *nfhp; 7167 uint8_t *cp; 7168 uid_t user; 7169 gid_t grp; 7170 7171 NFSCL_DEBUG(4, "in nfsrv_parselayoutget\n"); 7172 error = 0; 7173 flp = NULL; 7174 gotiomode = -1; 7175 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED + NFSX_STATEID); 7176 if (*tl++ != 0) 7177 *retonclosep = 1; 7178 else 7179 *retonclosep = 0; 7180 stateidp->seqid = fxdr_unsigned(uint32_t, *tl++); 7181 NFSCL_DEBUG(4, "retoncls=%d stseq=%d\n", *retonclosep, 7182 (int)stateidp->seqid); 7183 stateidp->other[0] = *tl++; 7184 stateidp->other[1] = *tl++; 7185 stateidp->other[2] = *tl++; 7186 cnt = fxdr_unsigned(int, *tl); 7187 NFSCL_DEBUG(4, "layg cnt=%d\n", cnt); 7188 if (cnt <= 0 || cnt > 10000) { 7189 /* Don't accept more than 10000 layouts in reply. */ 7190 error = NFSERR_BADXDR; 7191 goto nfsmout; 7192 } 7193 for (i = 0; i < cnt; i++) { 7194 /* Dissect to the layout type. */ 7195 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_HYPER + 7196 3 * NFSX_UNSIGNED); 7197 off = fxdr_hyper(tl); tl += 2; 7198 retlen = fxdr_hyper(tl); tl += 2; 7199 iomode = fxdr_unsigned(int, *tl++); 7200 laytype = fxdr_unsigned(int, *tl); 7201 NFSCL_DEBUG(4, "layt=%d off=%ju len=%ju iom=%d\n", laytype, 7202 (uintmax_t)off, (uintmax_t)retlen, iomode); 7203 /* Ignore length of layout body for now. */ 7204 if (laytype == NFSLAYOUT_NFSV4_1_FILES) { 7205 /* Parse the File layout up to fhcnt. */ 7206 NFSM_DISSECT(tl, uint32_t *, 3 * NFSX_UNSIGNED + 7207 NFSX_HYPER + NFSX_V4DEVICEID); 7208 fhcnt = fxdr_unsigned(int, *(tl + 4 + 7209 NFSX_V4DEVICEID / NFSX_UNSIGNED)); 7210 NFSCL_DEBUG(4, "fhcnt=%d\n", fhcnt); 7211 if (fhcnt < 0 || fhcnt > 100) { 7212 /* Don't accept more than 100 file handles. */ 7213 error = NFSERR_BADXDR; 7214 goto nfsmout; 7215 } 7216 if (fhcnt > 0) 7217 flp = malloc(sizeof(*flp) + fhcnt * 7218 sizeof(struct nfsfh *), M_NFSFLAYOUT, 7219 M_WAITOK); 7220 else 7221 flp = malloc(sizeof(*flp), M_NFSFLAYOUT, 7222 M_WAITOK); 7223 flp->nfsfl_flags = NFSFL_FILE; 7224 flp->nfsfl_fhcnt = 0; 7225 flp->nfsfl_devp = NULL; 7226 flp->nfsfl_off = off; 7227 if (flp->nfsfl_off + retlen < flp->nfsfl_off) 7228 flp->nfsfl_end = UINT64_MAX - flp->nfsfl_off; 7229 else 7230 flp->nfsfl_end = flp->nfsfl_off + retlen; 7231 flp->nfsfl_iomode = iomode; 7232 if (gotiomode == -1) 7233 gotiomode = flp->nfsfl_iomode; 7234 /* Ignore layout body length for now. */ 7235 NFSBCOPY(tl, flp->nfsfl_dev, NFSX_V4DEVICEID); 7236 tl += (NFSX_V4DEVICEID / NFSX_UNSIGNED); 7237 flp->nfsfl_util = fxdr_unsigned(uint32_t, *tl++); 7238 NFSCL_DEBUG(4, "flutil=0x%x\n", flp->nfsfl_util); 7239 mtx_lock(&nmp->nm_mtx); 7240 if (nmp->nm_minorvers > 1 && (flp->nfsfl_util & 7241 NFSFLAYUTIL_IOADVISE_THRU_MDS) != 0) 7242 nmp->nm_privflag |= NFSMNTP_IOADVISETHRUMDS; 7243 mtx_unlock(&nmp->nm_mtx); 7244 flp->nfsfl_stripe1 = fxdr_unsigned(uint32_t, *tl++); 7245 flp->nfsfl_patoff = fxdr_hyper(tl); tl += 2; 7246 NFSCL_DEBUG(4, "stripe1=%u poff=%ju\n", 7247 flp->nfsfl_stripe1, (uintmax_t)flp->nfsfl_patoff); 7248 for (j = 0; j < fhcnt; j++) { 7249 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 7250 nfhlen = fxdr_unsigned(int, *tl); 7251 if (nfhlen <= 0 || nfhlen > NFSX_V4FHMAX) { 7252 error = NFSERR_BADXDR; 7253 goto nfsmout; 7254 } 7255 nfhp = malloc(sizeof(*nfhp) + nfhlen - 1, 7256 M_NFSFH, M_WAITOK); 7257 flp->nfsfl_fh[j] = nfhp; 7258 flp->nfsfl_fhcnt++; 7259 nfhp->nfh_len = nfhlen; 7260 NFSM_DISSECT(cp, uint8_t *, NFSM_RNDUP(nfhlen)); 7261 NFSBCOPY(cp, nfhp->nfh_fh, nfhlen); 7262 } 7263 } else if (laytype == NFSLAYOUT_FLEXFILE) { 7264 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED + 7265 NFSX_HYPER); 7266 mirrorcnt = fxdr_unsigned(int, *(tl + 2)); 7267 NFSCL_DEBUG(4, "mirrorcnt=%d\n", mirrorcnt); 7268 if (mirrorcnt < 1 || mirrorcnt > NFSDEV_MAXMIRRORS) { 7269 error = NFSERR_BADXDR; 7270 goto nfsmout; 7271 } 7272 flp = malloc(sizeof(*flp) + mirrorcnt * 7273 sizeof(struct nfsffm), M_NFSFLAYOUT, M_WAITOK); 7274 flp->nfsfl_flags = NFSFL_FLEXFILE; 7275 flp->nfsfl_mirrorcnt = mirrorcnt; 7276 for (j = 0; j < mirrorcnt; j++) 7277 flp->nfsfl_ffm[j].devp = NULL; 7278 flp->nfsfl_off = off; 7279 if (flp->nfsfl_off + retlen < flp->nfsfl_off) 7280 flp->nfsfl_end = UINT64_MAX - flp->nfsfl_off; 7281 else 7282 flp->nfsfl_end = flp->nfsfl_off + retlen; 7283 flp->nfsfl_iomode = iomode; 7284 if (gotiomode == -1) 7285 gotiomode = flp->nfsfl_iomode; 7286 flp->nfsfl_stripeunit = fxdr_hyper(tl); 7287 NFSCL_DEBUG(4, "stripeunit=%ju\n", 7288 (uintmax_t)flp->nfsfl_stripeunit); 7289 for (j = 0; j < mirrorcnt; j++) { 7290 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 7291 k = fxdr_unsigned(int, *tl); 7292 if (k < 1 || k > 128) { 7293 error = NFSERR_BADXDR; 7294 goto nfsmout; 7295 } 7296 NFSCL_DEBUG(4, "servercnt=%d\n", k); 7297 for (l = 0; l < k; l++) { 7298 NFSM_DISSECT(tl, uint32_t *, 7299 NFSX_V4DEVICEID + NFSX_STATEID + 7300 2 * NFSX_UNSIGNED); 7301 if (l == 0) { 7302 /* Just use the first server. */ 7303 NFSBCOPY(tl, 7304 flp->nfsfl_ffm[j].dev, 7305 NFSX_V4DEVICEID); 7306 tl += (NFSX_V4DEVICEID / 7307 NFSX_UNSIGNED); 7308 tl++; 7309 flp->nfsfl_ffm[j].st.seqid = 7310 *tl++; 7311 flp->nfsfl_ffm[j].st.other[0] = 7312 *tl++; 7313 flp->nfsfl_ffm[j].st.other[1] = 7314 *tl++; 7315 flp->nfsfl_ffm[j].st.other[2] = 7316 *tl++; 7317 NFSCL_DEBUG(4, "st.seqid=%u " 7318 "st.o0=0x%x st.o1=0x%x " 7319 "st.o2=0x%x\n", 7320 flp->nfsfl_ffm[j].st.seqid, 7321 flp->nfsfl_ffm[j].st.other[0], 7322 flp->nfsfl_ffm[j].st.other[1], 7323 flp->nfsfl_ffm[j].st.other[2]); 7324 } else 7325 tl += ((NFSX_V4DEVICEID + 7326 NFSX_STATEID + 7327 NFSX_UNSIGNED) / 7328 NFSX_UNSIGNED); 7329 fhcnt = fxdr_unsigned(int, *tl); 7330 NFSCL_DEBUG(4, "fhcnt=%d\n", fhcnt); 7331 if (fhcnt < 1 || 7332 fhcnt > NFSDEV_MAXVERS) { 7333 error = NFSERR_BADXDR; 7334 goto nfsmout; 7335 } 7336 for (m = 0; m < fhcnt; m++) { 7337 NFSM_DISSECT(tl, uint32_t *, 7338 NFSX_UNSIGNED); 7339 nfhlen = fxdr_unsigned(int, 7340 *tl); 7341 NFSCL_DEBUG(4, "nfhlen=%d\n", 7342 nfhlen); 7343 if (nfhlen <= 0 || nfhlen > 7344 NFSX_V4FHMAX) { 7345 error = NFSERR_BADXDR; 7346 goto nfsmout; 7347 } 7348 NFSM_DISSECT(cp, uint8_t *, 7349 NFSM_RNDUP(nfhlen)); 7350 if (l == 0) { 7351 flp->nfsfl_ffm[j].fhcnt 7352 = fhcnt; 7353 nfhp = malloc( 7354 sizeof(*nfhp) + 7355 nfhlen - 1, M_NFSFH, 7356 M_WAITOK); 7357 flp->nfsfl_ffm[j].fh[m] 7358 = nfhp; 7359 nfhp->nfh_len = nfhlen; 7360 NFSBCOPY(cp, 7361 nfhp->nfh_fh, 7362 nfhlen); 7363 NFSCL_DEBUG(4, 7364 "got fh\n"); 7365 } 7366 } 7367 /* Now, get the ffsd_user/ffds_group. */ 7368 error = nfsrv_parseug(nd, 0, &user, 7369 &grp, curthread); 7370 NFSCL_DEBUG(4, "after parseu=%d\n", 7371 error); 7372 if (error == 0) 7373 error = nfsrv_parseug(nd, 1, 7374 &user, &grp, curthread); 7375 NFSCL_DEBUG(4, "aft parseg=%d\n", 7376 grp); 7377 if (error != 0) 7378 goto nfsmout; 7379 NFSCL_DEBUG(4, "user=%d group=%d\n", 7380 user, grp); 7381 if (l == 0) { 7382 flp->nfsfl_ffm[j].user = user; 7383 flp->nfsfl_ffm[j].group = grp; 7384 NFSCL_DEBUG(4, 7385 "usr=%d grp=%d\n", user, 7386 grp); 7387 } 7388 } 7389 } 7390 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED); 7391 flp->nfsfl_fflags = fxdr_unsigned(uint32_t, *tl++); 7392 #ifdef notnow 7393 /* 7394 * At this time, there is no flag. 7395 * NFSFLEXFLAG_IOADVISE_THRU_MDS might need to be 7396 * added, or it may never exist? 7397 */ 7398 mtx_lock(&nmp->nm_mtx); 7399 if (nmp->nm_minorvers > 1 && (flp->nfsfl_fflags & 7400 NFSFLEXFLAG_IOADVISE_THRU_MDS) != 0) 7401 nmp->nm_privflag |= NFSMNTP_IOADVISETHRUMDS; 7402 mtx_unlock(&nmp->nm_mtx); 7403 #endif 7404 flp->nfsfl_statshint = fxdr_unsigned(uint32_t, *tl); 7405 NFSCL_DEBUG(4, "fflags=0x%x statshint=%d\n", 7406 flp->nfsfl_fflags, flp->nfsfl_statshint); 7407 } else { 7408 error = NFSERR_BADXDR; 7409 goto nfsmout; 7410 } 7411 if (flp->nfsfl_iomode == gotiomode) { 7412 /* Keep the list in increasing offset order. */ 7413 tflp = LIST_FIRST(flhp); 7414 prevflp = NULL; 7415 while (tflp != NULL && 7416 tflp->nfsfl_off < flp->nfsfl_off) { 7417 prevflp = tflp; 7418 tflp = LIST_NEXT(tflp, nfsfl_list); 7419 } 7420 if (prevflp == NULL) 7421 LIST_INSERT_HEAD(flhp, flp, nfsfl_list); 7422 else 7423 LIST_INSERT_AFTER(prevflp, flp, 7424 nfsfl_list); 7425 NFSCL_DEBUG(4, "flp inserted\n"); 7426 } else { 7427 printf("nfscl_layoutget(): got wrong iomode\n"); 7428 nfscl_freeflayout(flp); 7429 } 7430 flp = NULL; 7431 } 7432 nfsmout: 7433 NFSCL_DEBUG(4, "eo nfsrv_parselayoutget=%d\n", error); 7434 if (error != 0 && flp != NULL) 7435 nfscl_freeflayout(flp); 7436 return (error); 7437 } 7438 7439 /* 7440 * Parse a user/group digit string. 7441 */ 7442 static int 7443 nfsrv_parseug(struct nfsrv_descript *nd, int dogrp, uid_t *uidp, gid_t *gidp, 7444 NFSPROC_T *p) 7445 { 7446 uint32_t *tl; 7447 char *cp, *str, str0[NFSV4_SMALLSTR + 1]; 7448 uint32_t len = 0; 7449 int error = 0; 7450 7451 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 7452 len = fxdr_unsigned(uint32_t, *tl); 7453 str = NULL; 7454 if (len > NFSV4_OPAQUELIMIT) { 7455 error = NFSERR_BADXDR; 7456 goto nfsmout; 7457 } 7458 NFSCL_DEBUG(4, "nfsrv_parseug: len=%d\n", len); 7459 if (len == 0) { 7460 if (dogrp != 0) 7461 *gidp = GID_NOGROUP; 7462 else 7463 *uidp = UID_NOBODY; 7464 return (0); 7465 } 7466 if (len > NFSV4_SMALLSTR) 7467 str = malloc(len + 1, M_TEMP, M_WAITOK); 7468 else 7469 str = str0; 7470 NFSM_DISSECT(cp, char *, NFSM_RNDUP(len)); 7471 NFSBCOPY(cp, str, len); 7472 str[len] = '\0'; 7473 NFSCL_DEBUG(4, "nfsrv_parseug: str=%s\n", str); 7474 if (dogrp != 0) 7475 error = nfsv4_strtogid(nd, str, len, gidp); 7476 else 7477 error = nfsv4_strtouid(nd, str, len, uidp); 7478 nfsmout: 7479 if (len > NFSV4_SMALLSTR) 7480 free(str, M_TEMP); 7481 NFSCL_DEBUG(4, "eo nfsrv_parseug=%d\n", error); 7482 return (error); 7483 } 7484 7485 /* 7486 * Similar to nfsrpc_getlayout(), except that it uses nfsrpc_openlayget(), 7487 * so that it does both an Open and a Layoutget. 7488 */ 7489 static int 7490 nfsrpc_getopenlayout(struct nfsmount *nmp, vnode_t vp, u_int8_t *nfhp, 7491 int fhlen, uint8_t *newfhp, int newfhlen, uint32_t mode, 7492 struct nfsclopen *op, uint8_t *name, int namelen, struct nfscldeleg **dpp, 7493 struct ucred *cred, NFSPROC_T *p) 7494 { 7495 struct nfscllayout *lyp; 7496 struct nfsclflayout *flp; 7497 struct nfsclflayouthead flh; 7498 int error, islocked, layoutlen, recalled, retonclose, usecurstateid; 7499 int layouttype, laystat; 7500 nfsv4stateid_t stateid; 7501 struct nfsclsession *tsep; 7502 7503 error = 0; 7504 if (NFSHASFLEXFILE(nmp)) 7505 layouttype = NFSLAYOUT_FLEXFILE; 7506 else 7507 layouttype = NFSLAYOUT_NFSV4_1_FILES; 7508 /* 7509 * If lyp is returned non-NULL, there will be a refcnt (shared lock) 7510 * on it, iff flp != NULL or a lock (exclusive lock) on it iff 7511 * flp == NULL. 7512 */ 7513 lyp = nfscl_getlayout(nmp->nm_clp, newfhp, newfhlen, 0, &flp, 7514 &recalled); 7515 NFSCL_DEBUG(4, "nfsrpc_getopenlayout nfscl_getlayout lyp=%p\n", lyp); 7516 if (lyp == NULL) 7517 islocked = 0; 7518 else if (flp != NULL) 7519 islocked = 1; 7520 else 7521 islocked = 2; 7522 if ((lyp == NULL || flp == NULL) && recalled == 0) { 7523 LIST_INIT(&flh); 7524 tsep = nfsmnt_mdssession(nmp); 7525 layoutlen = tsep->nfsess_maxcache - (NFSX_STATEID + 7526 3 * NFSX_UNSIGNED); 7527 if (lyp == NULL) 7528 usecurstateid = 1; 7529 else { 7530 usecurstateid = 0; 7531 stateid.seqid = lyp->nfsly_stateid.seqid; 7532 stateid.other[0] = lyp->nfsly_stateid.other[0]; 7533 stateid.other[1] = lyp->nfsly_stateid.other[1]; 7534 stateid.other[2] = lyp->nfsly_stateid.other[2]; 7535 } 7536 error = nfsrpc_openlayoutrpc(nmp, vp, nfhp, fhlen, 7537 newfhp, newfhlen, mode, op, name, namelen, 7538 dpp, &stateid, usecurstateid, layouttype, layoutlen, 7539 &retonclose, &flh, &laystat, cred, p); 7540 NFSCL_DEBUG(4, "aft nfsrpc_openlayoutrpc laystat=%d err=%d\n", 7541 laystat, error); 7542 laystat = nfsrpc_layoutgetres(nmp, vp, newfhp, newfhlen, 7543 &stateid, retonclose, NULL, &lyp, &flh, layouttype, laystat, 7544 &islocked, cred, p); 7545 } else 7546 error = nfsrpc_openrpc(nmp, vp, nfhp, fhlen, newfhp, newfhlen, 7547 mode, op, name, namelen, dpp, 0, 0, cred, p, 0, 0); 7548 if (islocked == 2) 7549 nfscl_rellayout(lyp, 1); 7550 else if (islocked == 1) 7551 nfscl_rellayout(lyp, 0); 7552 return (error); 7553 } 7554 7555 /* 7556 * This function does an Open+LayoutGet for an NFSv4.1 mount with pNFS 7557 * enabled, only for the CLAIM_NULL case. All other NFSv4 Opens are 7558 * handled by nfsrpc_openrpc(). 7559 * For the case where op == NULL, dvp is the directory. When op != NULL, it 7560 * can be NULL. 7561 */ 7562 static int 7563 nfsrpc_openlayoutrpc(struct nfsmount *nmp, vnode_t vp, u_int8_t *nfhp, 7564 int fhlen, uint8_t *newfhp, int newfhlen, uint32_t mode, 7565 struct nfsclopen *op, uint8_t *name, int namelen, struct nfscldeleg **dpp, 7566 nfsv4stateid_t *stateidp, int usecurstateid, int layouttype, 7567 int layoutlen, int *retonclosep, struct nfsclflayouthead *flhp, 7568 int *laystatp, struct ucred *cred, NFSPROC_T *p) 7569 { 7570 uint32_t *tl; 7571 struct nfsrv_descript nfsd, *nd = &nfsd; 7572 struct nfscldeleg *ndp = NULL; 7573 struct nfsvattr nfsva; 7574 struct nfsclsession *tsep; 7575 uint32_t rflags, deleg; 7576 nfsattrbit_t attrbits; 7577 int error, ret, acesize, limitby, iomode; 7578 7579 *dpp = NULL; 7580 *laystatp = ENXIO; 7581 nfscl_reqstart(nd, NFSPROC_OPENLAYGET, nmp, nfhp, fhlen, NULL, NULL, 7582 0, 0); 7583 NFSM_BUILD(tl, uint32_t *, 5 * NFSX_UNSIGNED); 7584 *tl++ = txdr_unsigned(op->nfso_own->nfsow_seqid); 7585 *tl++ = txdr_unsigned(mode & NFSV4OPEN_ACCESSBOTH); 7586 *tl++ = txdr_unsigned((mode >> NFSLCK_SHIFT) & NFSV4OPEN_DENYBOTH); 7587 tsep = nfsmnt_mdssession(nmp); 7588 *tl++ = tsep->nfsess_clientid.lval[0]; 7589 *tl = tsep->nfsess_clientid.lval[1]; 7590 nfsm_strtom(nd, op->nfso_own->nfsow_owner, NFSV4CL_LOCKNAMELEN); 7591 NFSM_BUILD(tl, uint32_t *, 2 * NFSX_UNSIGNED); 7592 *tl++ = txdr_unsigned(NFSV4OPEN_NOCREATE); 7593 *tl = txdr_unsigned(NFSV4OPEN_CLAIMNULL); 7594 nfsm_strtom(nd, name, namelen); 7595 NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED); 7596 *tl = txdr_unsigned(NFSV4OP_GETATTR); 7597 NFSZERO_ATTRBIT(&attrbits); 7598 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_CHANGE); 7599 NFSSETBIT_ATTRBIT(&attrbits, NFSATTRBIT_TIMEMODIFY); 7600 nfsrv_putattrbit(nd, &attrbits); 7601 NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED); 7602 *tl = txdr_unsigned(NFSV4OP_LAYOUTGET); 7603 if ((mode & NFSV4OPEN_ACCESSWRITE) != 0) 7604 iomode = NFSLAYOUTIOMODE_RW; 7605 else 7606 iomode = NFSLAYOUTIOMODE_READ; 7607 nfsrv_setuplayoutget(nd, iomode, 0, UINT64_MAX, 0, stateidp, 7608 layouttype, layoutlen, usecurstateid); 7609 error = newnfs_request(nd, nmp, NULL, &nmp->nm_sockreq, vp, p, cred, 7610 NFS_PROG, NFS_VER4, NULL, 1, NULL, NULL); 7611 if (error != 0) 7612 return (error); 7613 NFSCL_INCRSEQID(op->nfso_own->nfsow_seqid, nd); 7614 if (nd->nd_repstat != 0) 7615 *laystatp = nd->nd_repstat; 7616 if ((nd->nd_flag & ND_NOMOREDATA) == 0) { 7617 /* ND_NOMOREDATA will be set if the Open operation failed. */ 7618 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID + 7619 6 * NFSX_UNSIGNED); 7620 op->nfso_stateid.seqid = *tl++; 7621 op->nfso_stateid.other[0] = *tl++; 7622 op->nfso_stateid.other[1] = *tl++; 7623 op->nfso_stateid.other[2] = *tl; 7624 rflags = fxdr_unsigned(u_int32_t, *(tl + 6)); 7625 error = nfsrv_getattrbits(nd, &attrbits, NULL, NULL); 7626 if (error != 0) 7627 goto nfsmout; 7628 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 7629 deleg = fxdr_unsigned(u_int32_t, *tl); 7630 if (deleg == NFSV4OPEN_DELEGATEREAD || 7631 deleg == NFSV4OPEN_DELEGATEWRITE) { 7632 if (!(op->nfso_own->nfsow_clp->nfsc_flags & 7633 NFSCLFLAGS_FIRSTDELEG)) 7634 op->nfso_own->nfsow_clp->nfsc_flags |= 7635 (NFSCLFLAGS_FIRSTDELEG | NFSCLFLAGS_GOTDELEG); 7636 ndp = malloc(sizeof(struct nfscldeleg) + newfhlen, 7637 M_NFSCLDELEG, M_WAITOK); 7638 LIST_INIT(&ndp->nfsdl_owner); 7639 LIST_INIT(&ndp->nfsdl_lock); 7640 ndp->nfsdl_clp = op->nfso_own->nfsow_clp; 7641 ndp->nfsdl_fhlen = newfhlen; 7642 NFSBCOPY(newfhp, ndp->nfsdl_fh, newfhlen); 7643 newnfs_copyincred(cred, &ndp->nfsdl_cred); 7644 nfscl_lockinit(&ndp->nfsdl_rwlock); 7645 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID + 7646 NFSX_UNSIGNED); 7647 ndp->nfsdl_stateid.seqid = *tl++; 7648 ndp->nfsdl_stateid.other[0] = *tl++; 7649 ndp->nfsdl_stateid.other[1] = *tl++; 7650 ndp->nfsdl_stateid.other[2] = *tl++; 7651 ret = fxdr_unsigned(int, *tl); 7652 if (deleg == NFSV4OPEN_DELEGATEWRITE) { 7653 ndp->nfsdl_flags = NFSCLDL_WRITE; 7654 /* 7655 * Indicates how much the file can grow. 7656 */ 7657 NFSM_DISSECT(tl, u_int32_t *, 7658 3 * NFSX_UNSIGNED); 7659 limitby = fxdr_unsigned(int, *tl++); 7660 switch (limitby) { 7661 case NFSV4OPEN_LIMITSIZE: 7662 ndp->nfsdl_sizelimit = fxdr_hyper(tl); 7663 break; 7664 case NFSV4OPEN_LIMITBLOCKS: 7665 ndp->nfsdl_sizelimit = 7666 fxdr_unsigned(u_int64_t, *tl++); 7667 ndp->nfsdl_sizelimit *= 7668 fxdr_unsigned(u_int64_t, *tl); 7669 break; 7670 default: 7671 error = NFSERR_BADXDR; 7672 goto nfsmout; 7673 }; 7674 } else 7675 ndp->nfsdl_flags = NFSCLDL_READ; 7676 if (ret != 0) 7677 ndp->nfsdl_flags |= NFSCLDL_RECALL; 7678 error = nfsrv_dissectace(nd, &ndp->nfsdl_ace, &ret, 7679 &acesize, p); 7680 if (error != 0) 7681 goto nfsmout; 7682 } else if (deleg != NFSV4OPEN_DELEGATENONE) { 7683 error = NFSERR_BADXDR; 7684 goto nfsmout; 7685 } 7686 if ((rflags & NFSV4OPEN_LOCKTYPEPOSIX) != 0 || 7687 nfscl_assumeposixlocks) 7688 op->nfso_posixlock = 1; 7689 else 7690 op->nfso_posixlock = 0; 7691 NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 7692 /* If the 2nd element == NFS_OK, the Getattr succeeded. */ 7693 if (*++tl == 0) { 7694 error = nfsv4_loadattr(nd, NULL, &nfsva, NULL, 7695 NULL, 0, NULL, NULL, NULL, NULL, NULL, 0, 7696 NULL, NULL, NULL, p, cred); 7697 if (error != 0) 7698 goto nfsmout; 7699 if (ndp != NULL) { 7700 ndp->nfsdl_change = nfsva.na_filerev; 7701 ndp->nfsdl_modtime = nfsva.na_mtime; 7702 ndp->nfsdl_flags |= NFSCLDL_MODTIMESET; 7703 *dpp = ndp; 7704 ndp = NULL; 7705 } 7706 /* 7707 * At this point, the Open has succeeded, so set 7708 * nd_repstat = NFS_OK. If the Layoutget failed, 7709 * this function just won't return a layout. 7710 */ 7711 if (nd->nd_repstat == 0) { 7712 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED); 7713 *laystatp = fxdr_unsigned(int, *++tl); 7714 if (*laystatp == 0) { 7715 error = nfsrv_parselayoutget(nmp, nd, 7716 stateidp, retonclosep, flhp); 7717 if (error != 0) 7718 *laystatp = error; 7719 } 7720 } else 7721 nd->nd_repstat = 0; /* Return 0 for Open. */ 7722 } 7723 } 7724 if (nd->nd_repstat != 0 && error == 0) 7725 error = nd->nd_repstat; 7726 nfsmout: 7727 free(ndp, M_NFSCLDELEG); 7728 m_freem(nd->nd_mrep); 7729 return (error); 7730 } 7731 7732 /* 7733 * Similar nfsrpc_createv4(), but also does the LayoutGet operation. 7734 * Used only for mounts with pNFS enabled. 7735 */ 7736 static int 7737 nfsrpc_createlayout(vnode_t dvp, char *name, int namelen, struct vattr *vap, 7738 nfsquad_t cverf, int fmode, struct nfsclowner *owp, struct nfscldeleg **dpp, 7739 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap, 7740 struct nfsvattr *nnap, struct nfsfh **nfhpp, int *attrflagp, 7741 int *dattrflagp, void *dstuff, int *unlockedp, nfsv4stateid_t *stateidp, 7742 int usecurstateid, int layouttype, int layoutlen, int *retonclosep, 7743 struct nfsclflayouthead *flhp, int *laystatp) 7744 { 7745 uint32_t *tl; 7746 int error = 0, deleg, newone, ret, acesize, limitby; 7747 struct nfsrv_descript nfsd, *nd = &nfsd; 7748 struct nfsclopen *op; 7749 struct nfscldeleg *dp = NULL; 7750 struct nfsnode *np; 7751 struct nfsfh *nfhp; 7752 struct nfsclsession *tsep; 7753 nfsattrbit_t attrbits; 7754 nfsv4stateid_t stateid; 7755 struct nfsmount *nmp; 7756 7757 nmp = VFSTONFS(dvp->v_mount); 7758 np = VTONFS(dvp); 7759 *laystatp = ENXIO; 7760 *unlockedp = 0; 7761 *nfhpp = NULL; 7762 *dpp = NULL; 7763 *attrflagp = 0; 7764 *dattrflagp = 0; 7765 if (namelen > NFS_MAXNAMLEN) 7766 return (ENAMETOOLONG); 7767 NFSCL_REQSTART(nd, NFSPROC_CREATELAYGET, dvp); 7768 /* 7769 * For V4, this is actually an Open op. 7770 */ 7771 NFSM_BUILD(tl, u_int32_t *, 5 * NFSX_UNSIGNED); 7772 *tl++ = txdr_unsigned(owp->nfsow_seqid); 7773 *tl++ = txdr_unsigned(NFSV4OPEN_ACCESSWRITE | 7774 NFSV4OPEN_ACCESSREAD); 7775 *tl++ = txdr_unsigned(NFSV4OPEN_DENYNONE); 7776 tsep = nfsmnt_mdssession(nmp); 7777 *tl++ = tsep->nfsess_clientid.lval[0]; 7778 *tl = tsep->nfsess_clientid.lval[1]; 7779 nfsm_strtom(nd, owp->nfsow_owner, NFSV4CL_LOCKNAMELEN); 7780 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 7781 *tl++ = txdr_unsigned(NFSV4OPEN_CREATE); 7782 if ((fmode & O_EXCL) != 0) { 7783 if (NFSHASSESSPERSIST(nmp)) { 7784 /* Use GUARDED for persistent sessions. */ 7785 *tl = txdr_unsigned(NFSCREATE_GUARDED); 7786 nfscl_fillsattr(nd, vap, dvp, 0, 0); 7787 } else { 7788 /* Otherwise, use EXCLUSIVE4_1. */ 7789 *tl = txdr_unsigned(NFSCREATE_EXCLUSIVE41); 7790 NFSM_BUILD(tl, u_int32_t *, NFSX_VERF); 7791 *tl++ = cverf.lval[0]; 7792 *tl = cverf.lval[1]; 7793 nfscl_fillsattr(nd, vap, dvp, 0, 0); 7794 } 7795 } else { 7796 *tl = txdr_unsigned(NFSCREATE_UNCHECKED); 7797 nfscl_fillsattr(nd, vap, dvp, 0, 0); 7798 } 7799 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 7800 *tl = txdr_unsigned(NFSV4OPEN_CLAIMNULL); 7801 nfsm_strtom(nd, name, namelen); 7802 /* Get the new file's handle and attributes, plus save the FH. */ 7803 NFSM_BUILD(tl, u_int32_t *, 3 * NFSX_UNSIGNED); 7804 *tl++ = txdr_unsigned(NFSV4OP_SAVEFH); 7805 *tl++ = txdr_unsigned(NFSV4OP_GETFH); 7806 *tl = txdr_unsigned(NFSV4OP_GETATTR); 7807 NFSGETATTR_ATTRBIT(&attrbits); 7808 nfsrv_putattrbit(nd, &attrbits); 7809 /* Get the directory's post-op attributes. */ 7810 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 7811 *tl = txdr_unsigned(NFSV4OP_PUTFH); 7812 nfsm_fhtom(nd, np->n_fhp->nfh_fh, np->n_fhp->nfh_len, 0); 7813 NFSM_BUILD(tl, u_int32_t *, NFSX_UNSIGNED); 7814 *tl = txdr_unsigned(NFSV4OP_GETATTR); 7815 nfsrv_putattrbit(nd, &attrbits); 7816 NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED); 7817 *tl++ = txdr_unsigned(NFSV4OP_RESTOREFH); 7818 *tl = txdr_unsigned(NFSV4OP_LAYOUTGET); 7819 nfsrv_setuplayoutget(nd, NFSLAYOUTIOMODE_RW, 0, UINT64_MAX, 0, stateidp, 7820 layouttype, layoutlen, usecurstateid); 7821 error = nfscl_request(nd, dvp, p, cred, dstuff); 7822 if (error != 0) 7823 return (error); 7824 NFSCL_DEBUG(4, "nfsrpc_createlayout stat=%d err=%d\n", nd->nd_repstat, 7825 error); 7826 if (nd->nd_repstat != 0) 7827 *laystatp = nd->nd_repstat; 7828 NFSCL_INCRSEQID(owp->nfsow_seqid, nd); 7829 if ((nd->nd_flag & ND_NOMOREDATA) == 0) { 7830 NFSCL_DEBUG(4, "nfsrpc_createlayout open succeeded\n"); 7831 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID + 7832 6 * NFSX_UNSIGNED); 7833 stateid.seqid = *tl++; 7834 stateid.other[0] = *tl++; 7835 stateid.other[1] = *tl++; 7836 stateid.other[2] = *tl; 7837 nfsrv_getattrbits(nd, &attrbits, NULL, NULL); 7838 NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 7839 deleg = fxdr_unsigned(int, *tl); 7840 if (deleg == NFSV4OPEN_DELEGATEREAD || 7841 deleg == NFSV4OPEN_DELEGATEWRITE) { 7842 if (!(owp->nfsow_clp->nfsc_flags & 7843 NFSCLFLAGS_FIRSTDELEG)) 7844 owp->nfsow_clp->nfsc_flags |= 7845 (NFSCLFLAGS_FIRSTDELEG | NFSCLFLAGS_GOTDELEG); 7846 dp = malloc(sizeof(struct nfscldeleg) + NFSX_V4FHMAX, 7847 M_NFSCLDELEG, M_WAITOK); 7848 LIST_INIT(&dp->nfsdl_owner); 7849 LIST_INIT(&dp->nfsdl_lock); 7850 dp->nfsdl_clp = owp->nfsow_clp; 7851 newnfs_copyincred(cred, &dp->nfsdl_cred); 7852 nfscl_lockinit(&dp->nfsdl_rwlock); 7853 NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID + 7854 NFSX_UNSIGNED); 7855 dp->nfsdl_stateid.seqid = *tl++; 7856 dp->nfsdl_stateid.other[0] = *tl++; 7857 dp->nfsdl_stateid.other[1] = *tl++; 7858 dp->nfsdl_stateid.other[2] = *tl++; 7859 ret = fxdr_unsigned(int, *tl); 7860 if (deleg == NFSV4OPEN_DELEGATEWRITE) { 7861 dp->nfsdl_flags = NFSCLDL_WRITE; 7862 /* 7863 * Indicates how much the file can grow. 7864 */ 7865 NFSM_DISSECT(tl, u_int32_t *, 7866 3 * NFSX_UNSIGNED); 7867 limitby = fxdr_unsigned(int, *tl++); 7868 switch (limitby) { 7869 case NFSV4OPEN_LIMITSIZE: 7870 dp->nfsdl_sizelimit = fxdr_hyper(tl); 7871 break; 7872 case NFSV4OPEN_LIMITBLOCKS: 7873 dp->nfsdl_sizelimit = 7874 fxdr_unsigned(u_int64_t, *tl++); 7875 dp->nfsdl_sizelimit *= 7876 fxdr_unsigned(u_int64_t, *tl); 7877 break; 7878 default: 7879 error = NFSERR_BADXDR; 7880 goto nfsmout; 7881 }; 7882 } else { 7883 dp->nfsdl_flags = NFSCLDL_READ; 7884 } 7885 if (ret != 0) 7886 dp->nfsdl_flags |= NFSCLDL_RECALL; 7887 error = nfsrv_dissectace(nd, &dp->nfsdl_ace, &ret, 7888 &acesize, p); 7889 if (error != 0) 7890 goto nfsmout; 7891 } else if (deleg != NFSV4OPEN_DELEGATENONE) { 7892 error = NFSERR_BADXDR; 7893 goto nfsmout; 7894 } 7895 7896 /* Now, we should have the status for the SaveFH. */ 7897 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED); 7898 if (*++tl == 0) { 7899 NFSCL_DEBUG(4, "nfsrpc_createlayout SaveFH ok\n"); 7900 /* 7901 * Now, process the GetFH and Getattr for the newly 7902 * created file. nfscl_mtofh() will set 7903 * ND_NOMOREDATA if these weren't successful. 7904 */ 7905 error = nfscl_mtofh(nd, nfhpp, nnap, attrflagp); 7906 NFSCL_DEBUG(4, "aft nfscl_mtofh err=%d\n", error); 7907 if (error != 0) 7908 goto nfsmout; 7909 } else 7910 nd->nd_flag |= ND_NOMOREDATA; 7911 /* Now we have the PutFH and Getattr for the directory. */ 7912 if ((nd->nd_flag & ND_NOMOREDATA) == 0) { 7913 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED); 7914 if (*++tl != 0) 7915 nd->nd_flag |= ND_NOMOREDATA; 7916 else { 7917 NFSM_DISSECT(tl, uint32_t *, 2 * 7918 NFSX_UNSIGNED); 7919 if (*++tl != 0) 7920 nd->nd_flag |= ND_NOMOREDATA; 7921 } 7922 } 7923 if ((nd->nd_flag & ND_NOMOREDATA) == 0) { 7924 /* Load the directory attributes. */ 7925 error = nfsm_loadattr(nd, dnap); 7926 NFSCL_DEBUG(4, "aft nfsm_loadattr err=%d\n", error); 7927 if (error != 0) 7928 goto nfsmout; 7929 *dattrflagp = 1; 7930 if (dp != NULL && *attrflagp != 0) { 7931 dp->nfsdl_change = nnap->na_filerev; 7932 dp->nfsdl_modtime = nnap->na_mtime; 7933 dp->nfsdl_flags |= NFSCLDL_MODTIMESET; 7934 } 7935 /* 7936 * We can now complete the Open state. 7937 */ 7938 nfhp = *nfhpp; 7939 if (dp != NULL) { 7940 dp->nfsdl_fhlen = nfhp->nfh_len; 7941 NFSBCOPY(nfhp->nfh_fh, dp->nfsdl_fh, 7942 nfhp->nfh_len); 7943 } 7944 /* 7945 * Get an Open structure that will be 7946 * attached to the OpenOwner, acquired already. 7947 */ 7948 error = nfscl_open(dvp, nfhp->nfh_fh, nfhp->nfh_len, 7949 (NFSV4OPEN_ACCESSWRITE | NFSV4OPEN_ACCESSREAD), 0, 7950 cred, p, NULL, &op, &newone, NULL, 0); 7951 if (error != 0) 7952 goto nfsmout; 7953 op->nfso_stateid = stateid; 7954 newnfs_copyincred(cred, &op->nfso_cred); 7955 7956 nfscl_openrelease(nmp, op, error, newone); 7957 *unlockedp = 1; 7958 7959 /* Now, handle the RestoreFH and LayoutGet. */ 7960 if (nd->nd_repstat == 0) { 7961 NFSM_DISSECT(tl, uint32_t *, 4 * NFSX_UNSIGNED); 7962 *laystatp = fxdr_unsigned(int, *(tl + 3)); 7963 if (*laystatp == 0) { 7964 error = nfsrv_parselayoutget(nmp, nd, 7965 stateidp, retonclosep, flhp); 7966 if (error != 0) 7967 *laystatp = error; 7968 } 7969 NFSCL_DEBUG(4, "aft nfsrv_parselayout err=%d\n", 7970 error); 7971 } else 7972 nd->nd_repstat = 0; 7973 } 7974 } 7975 if (nd->nd_repstat != 0 && error == 0) 7976 error = nd->nd_repstat; 7977 if (error == NFSERR_STALECLIENTID || error == NFSERR_BADSESSION) 7978 nfscl_initiate_recovery(owp->nfsow_clp); 7979 nfsmout: 7980 NFSCL_DEBUG(4, "eo nfsrpc_createlayout err=%d\n", error); 7981 if (error == 0) 7982 *dpp = dp; 7983 else 7984 free(dp, M_NFSCLDELEG); 7985 m_freem(nd->nd_mrep); 7986 return (error); 7987 } 7988 7989 /* 7990 * Similar to nfsrpc_getopenlayout(), except that it used for the Create case. 7991 */ 7992 static int 7993 nfsrpc_getcreatelayout(vnode_t dvp, char *name, int namelen, struct vattr *vap, 7994 nfsquad_t cverf, int fmode, struct nfsclowner *owp, struct nfscldeleg **dpp, 7995 struct ucred *cred, NFSPROC_T *p, struct nfsvattr *dnap, 7996 struct nfsvattr *nnap, struct nfsfh **nfhpp, int *attrflagp, 7997 int *dattrflagp, void *dstuff, int *unlockedp) 7998 { 7999 struct nfscllayout *lyp; 8000 struct nfsclflayouthead flh; 8001 struct nfsfh *nfhp; 8002 struct nfsclsession *tsep; 8003 struct nfsmount *nmp; 8004 nfsv4stateid_t stateid; 8005 int error, layoutlen, layouttype, retonclose, laystat; 8006 8007 error = 0; 8008 nmp = VFSTONFS(dvp->v_mount); 8009 if (NFSHASFLEXFILE(nmp)) 8010 layouttype = NFSLAYOUT_FLEXFILE; 8011 else 8012 layouttype = NFSLAYOUT_NFSV4_1_FILES; 8013 LIST_INIT(&flh); 8014 tsep = nfsmnt_mdssession(nmp); 8015 layoutlen = tsep->nfsess_maxcache - (NFSX_STATEID + 3 * NFSX_UNSIGNED); 8016 error = nfsrpc_createlayout(dvp, name, namelen, vap, cverf, fmode, 8017 owp, dpp, cred, p, dnap, nnap, nfhpp, attrflagp, dattrflagp, 8018 dstuff, unlockedp, &stateid, 1, layouttype, layoutlen, &retonclose, 8019 &flh, &laystat); 8020 NFSCL_DEBUG(4, "aft nfsrpc_createlayoutrpc laystat=%d err=%d\n", 8021 laystat, error); 8022 lyp = NULL; 8023 if (laystat == 0) { 8024 nfhp = *nfhpp; 8025 laystat = nfsrpc_layoutgetres(nmp, dvp, nfhp->nfh_fh, 8026 nfhp->nfh_len, &stateid, retonclose, NULL, &lyp, &flh, 8027 layouttype, laystat, NULL, cred, p); 8028 } else 8029 laystat = nfsrpc_layoutgetres(nmp, dvp, NULL, 0, &stateid, 8030 retonclose, NULL, &lyp, &flh, layouttype, laystat, NULL, 8031 cred, p); 8032 if (laystat == 0) 8033 nfscl_rellayout(lyp, 0); 8034 return (error); 8035 } 8036 8037 /* 8038 * Process the results of a layoutget() operation. 8039 */ 8040 static int 8041 nfsrpc_layoutgetres(struct nfsmount *nmp, vnode_t vp, uint8_t *newfhp, 8042 int newfhlen, nfsv4stateid_t *stateidp, int retonclose, uint32_t *notifybit, 8043 struct nfscllayout **lypp, struct nfsclflayouthead *flhp, int layouttype, 8044 int laystat, int *islockedp, struct ucred *cred, NFSPROC_T *p) 8045 { 8046 struct nfsclflayout *tflp; 8047 struct nfscldevinfo *dip; 8048 uint8_t *dev; 8049 int i, mirrorcnt; 8050 8051 if (laystat == NFSERR_UNKNLAYOUTTYPE) { 8052 NFSLOCKMNT(nmp); 8053 if (!NFSHASFLEXFILE(nmp)) { 8054 /* Switch to using Flex File Layout. */ 8055 nmp->nm_state |= NFSSTA_FLEXFILE; 8056 } else if (layouttype == NFSLAYOUT_FLEXFILE) { 8057 /* Disable pNFS. */ 8058 NFSCL_DEBUG(1, "disable PNFS\n"); 8059 nmp->nm_state &= ~(NFSSTA_PNFS | NFSSTA_FLEXFILE); 8060 } 8061 NFSUNLOCKMNT(nmp); 8062 } 8063 if (laystat == 0) { 8064 NFSCL_DEBUG(4, "nfsrpc_layoutgetres at FOREACH\n"); 8065 LIST_FOREACH(tflp, flhp, nfsfl_list) { 8066 if (layouttype == NFSLAYOUT_FLEXFILE) 8067 mirrorcnt = tflp->nfsfl_mirrorcnt; 8068 else 8069 mirrorcnt = 1; 8070 for (i = 0; i < mirrorcnt; i++) { 8071 laystat = nfscl_adddevinfo(nmp, NULL, i, tflp); 8072 NFSCL_DEBUG(4, "aft adddev=%d\n", laystat); 8073 if (laystat != 0) { 8074 if (layouttype == NFSLAYOUT_FLEXFILE) 8075 dev = tflp->nfsfl_ffm[i].dev; 8076 else 8077 dev = tflp->nfsfl_dev; 8078 laystat = nfsrpc_getdeviceinfo(nmp, dev, 8079 layouttype, notifybit, &dip, cred, 8080 p); 8081 NFSCL_DEBUG(4, "aft nfsrpc_gdi=%d\n", 8082 laystat); 8083 if (laystat != 0) 8084 goto out; 8085 laystat = nfscl_adddevinfo(nmp, dip, i, 8086 tflp); 8087 if (laystat != 0) 8088 printf("nfsrpc_layoutgetresout" 8089 ": cannot add\n"); 8090 } 8091 } 8092 } 8093 } 8094 out: 8095 if (laystat == 0) { 8096 /* 8097 * nfscl_layout() always returns with the nfsly_lock 8098 * set to a refcnt (shared lock). 8099 * Passing in dvp is sufficient, since it is only used to 8100 * get the fsid for the file system. 8101 */ 8102 laystat = nfscl_layout(nmp, vp, newfhp, newfhlen, stateidp, 8103 layouttype, retonclose, flhp, lypp, cred, p); 8104 NFSCL_DEBUG(4, "nfsrpc_layoutgetres: aft nfscl_layout=%d\n", 8105 laystat); 8106 if (laystat == 0 && islockedp != NULL) 8107 *islockedp = 1; 8108 } 8109 return (laystat); 8110 } 8111 8112 /* 8113 * nfs copy_file_range operation. 8114 */ 8115 int 8116 nfsrpc_copy_file_range(vnode_t invp, off_t *inoffp, vnode_t outvp, 8117 off_t *outoffp, size_t *lenp, unsigned int flags, int *inattrflagp, 8118 struct nfsvattr *innap, int *outattrflagp, struct nfsvattr *outnap, 8119 struct ucred *cred, bool consecutive, bool *must_commitp) 8120 { 8121 int commit, error, expireret = 0, retrycnt; 8122 u_int32_t clidrev = 0; 8123 struct nfsmount *nmp = VFSTONFS(invp->v_mount); 8124 struct nfsfh *innfhp = NULL, *outnfhp = NULL; 8125 nfsv4stateid_t instateid, outstateid; 8126 void *inlckp, *outlckp; 8127 8128 if (nmp->nm_clp != NULL) 8129 clidrev = nmp->nm_clp->nfsc_clientidrev; 8130 innfhp = VTONFS(invp)->n_fhp; 8131 outnfhp = VTONFS(outvp)->n_fhp; 8132 retrycnt = 0; 8133 do { 8134 /* Get both stateids. */ 8135 inlckp = NULL; 8136 nfscl_getstateid(invp, innfhp->nfh_fh, innfhp->nfh_len, 8137 NFSV4OPEN_ACCESSREAD, 0, NULL, curthread, &instateid, 8138 &inlckp); 8139 outlckp = NULL; 8140 nfscl_getstateid(outvp, outnfhp->nfh_fh, outnfhp->nfh_len, 8141 NFSV4OPEN_ACCESSWRITE, 0, NULL, curthread, &outstateid, 8142 &outlckp); 8143 8144 error = nfsrpc_copyrpc(invp, *inoffp, outvp, *outoffp, lenp, 8145 &instateid, &outstateid, innap, inattrflagp, outnap, 8146 outattrflagp, consecutive, &commit, cred, curthread); 8147 if (error == 0) { 8148 if (commit != NFSWRITE_FILESYNC) 8149 *must_commitp = true; 8150 *inoffp += *lenp; 8151 *outoffp += *lenp; 8152 } else if (error == NFSERR_STALESTATEID) 8153 nfscl_initiate_recovery(nmp->nm_clp); 8154 if (inlckp != NULL) 8155 nfscl_lockderef(inlckp); 8156 if (outlckp != NULL) 8157 nfscl_lockderef(outlckp); 8158 if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 8159 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 8160 error == NFSERR_OLDSTATEID || error == NFSERR_BADSESSION) { 8161 (void) nfs_catnap(PZERO, error, "nfs_cfr"); 8162 } else if ((error == NFSERR_EXPIRED || 8163 error == NFSERR_BADSTATEID) && clidrev != 0) { 8164 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, 8165 curthread); 8166 } 8167 retrycnt++; 8168 } while (error == NFSERR_GRACE || error == NFSERR_DELAY || 8169 error == NFSERR_STALESTATEID || error == NFSERR_BADSESSION || 8170 error == NFSERR_STALEDONTRECOVER || 8171 (error == NFSERR_OLDSTATEID && retrycnt < 20) || 8172 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) && 8173 expireret == 0 && clidrev != 0 && retrycnt < 4)); 8174 if (error != 0 && (retrycnt >= 4 || 8175 error == NFSERR_STALESTATEID || error == NFSERR_BADSESSION || 8176 error == NFSERR_STALEDONTRECOVER)) 8177 error = EIO; 8178 return (error); 8179 } 8180 8181 /* 8182 * The copy RPC. 8183 */ 8184 static int 8185 nfsrpc_copyrpc(vnode_t invp, off_t inoff, vnode_t outvp, off_t outoff, 8186 size_t *lenp, nfsv4stateid_t *instateidp, nfsv4stateid_t *outstateidp, 8187 struct nfsvattr *innap, int *inattrflagp, struct nfsvattr *outnap, 8188 int *outattrflagp, bool consecutive, int *commitp, struct ucred *cred, 8189 NFSPROC_T *p) 8190 { 8191 uint32_t *tl; 8192 int error; 8193 struct nfsrv_descript nfsd; 8194 struct nfsrv_descript *nd = &nfsd; 8195 struct nfsmount *nmp; 8196 nfsattrbit_t attrbits; 8197 uint64_t len; 8198 8199 nmp = VFSTONFS(outvp->v_mount); 8200 *inattrflagp = *outattrflagp = 0; 8201 *commitp = NFSWRITE_UNSTABLE; 8202 len = *lenp; 8203 *lenp = 0; 8204 if (len > nfs_maxcopyrange) 8205 len = nfs_maxcopyrange; 8206 NFSCL_REQSTART(nd, NFSPROC_COPY, invp); 8207 NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED); 8208 *tl = txdr_unsigned(NFSV4OP_GETATTR); 8209 NFSGETATTR_ATTRBIT(&attrbits); 8210 nfsrv_putattrbit(nd, &attrbits); 8211 NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED); 8212 *tl = txdr_unsigned(NFSV4OP_PUTFH); 8213 nfsm_fhtom(nd, VTONFS(outvp)->n_fhp->nfh_fh, 8214 VTONFS(outvp)->n_fhp->nfh_len, 0); 8215 NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED); 8216 *tl = txdr_unsigned(NFSV4OP_COPY); 8217 nfsm_stateidtom(nd, instateidp, NFSSTATEID_PUTSTATEID); 8218 nfsm_stateidtom(nd, outstateidp, NFSSTATEID_PUTSTATEID); 8219 NFSM_BUILD(tl, uint32_t *, 3 * NFSX_HYPER + 4 * NFSX_UNSIGNED); 8220 txdr_hyper(inoff, tl); tl += 2; 8221 txdr_hyper(outoff, tl); tl += 2; 8222 txdr_hyper(len, tl); tl += 2; 8223 if (consecutive) 8224 *tl++ = newnfs_true; 8225 else 8226 *tl++ = newnfs_false; 8227 *tl++ = newnfs_true; 8228 *tl++ = 0; 8229 *tl = txdr_unsigned(NFSV4OP_GETATTR); 8230 NFSWRITEGETATTR_ATTRBIT(&attrbits); 8231 nfsrv_putattrbit(nd, &attrbits); 8232 error = nfscl_request(nd, invp, p, cred, NULL); 8233 if (error != 0) 8234 return (error); 8235 if ((nd->nd_flag & ND_NOMOREDATA) == 0) { 8236 /* Get the input file's attributes. */ 8237 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED); 8238 if (*(tl + 1) == 0) { 8239 error = nfsm_loadattr(nd, innap); 8240 if (error != 0) 8241 goto nfsmout; 8242 *inattrflagp = 1; 8243 } else 8244 nd->nd_flag |= ND_NOMOREDATA; 8245 } 8246 /* Skip over return stat for PutFH. */ 8247 if ((nd->nd_flag & ND_NOMOREDATA) == 0) { 8248 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED); 8249 if (*++tl != 0) 8250 nd->nd_flag |= ND_NOMOREDATA; 8251 } 8252 /* Skip over return stat for Copy. */ 8253 if ((nd->nd_flag & ND_NOMOREDATA) == 0) 8254 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED); 8255 if (nd->nd_repstat == 0) { 8256 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 8257 if (*tl != 0) { 8258 /* There should be no callback ids. */ 8259 error = NFSERR_BADXDR; 8260 goto nfsmout; 8261 } 8262 NFSM_DISSECT(tl, uint32_t *, NFSX_HYPER + 3 * NFSX_UNSIGNED + 8263 NFSX_VERF); 8264 len = fxdr_hyper(tl); tl += 2; 8265 *commitp = fxdr_unsigned(int, *tl++); 8266 NFSLOCKMNT(nmp); 8267 if (!NFSHASWRITEVERF(nmp)) { 8268 NFSBCOPY(tl, nmp->nm_verf, NFSX_VERF); 8269 NFSSETWRITEVERF(nmp); 8270 } else if (NFSBCMP(tl, nmp->nm_verf, NFSX_VERF)) { 8271 NFSBCOPY(tl, nmp->nm_verf, NFSX_VERF); 8272 nd->nd_repstat = NFSERR_STALEWRITEVERF; 8273 } 8274 NFSUNLOCKMNT(nmp); 8275 tl += (NFSX_VERF / NFSX_UNSIGNED); 8276 if (nd->nd_repstat == 0 && *++tl != newnfs_true) 8277 /* Must be a synchronous copy. */ 8278 nd->nd_repstat = NFSERR_NOTSUPP; 8279 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED); 8280 error = nfsm_loadattr(nd, outnap); 8281 if (error == 0) 8282 *outattrflagp = NFS_LATTR_NOSHRINK; 8283 if (nd->nd_repstat == 0) 8284 *lenp = len; 8285 } else if (nd->nd_repstat == NFSERR_OFFLOADNOREQS) { 8286 /* 8287 * For the case where consecutive is not supported, but 8288 * synchronous is supported, we can try consecutive == false 8289 * by returning this error. Otherwise, return NFSERR_NOTSUPP, 8290 * since Copy cannot be done. 8291 */ 8292 if ((nd->nd_flag & ND_NOMOREDATA) == 0) { 8293 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED); 8294 if (!consecutive || *++tl == newnfs_false) 8295 nd->nd_repstat = NFSERR_NOTSUPP; 8296 } else 8297 nd->nd_repstat = NFSERR_BADXDR; 8298 } 8299 if (error == 0) 8300 error = nd->nd_repstat; 8301 nfsmout: 8302 m_freem(nd->nd_mrep); 8303 return (error); 8304 } 8305 8306 /* 8307 * Seek operation. 8308 */ 8309 int 8310 nfsrpc_seek(vnode_t vp, off_t *offp, bool *eofp, int content, 8311 struct ucred *cred, struct nfsvattr *nap, int *attrflagp) 8312 { 8313 int error, expireret = 0, retrycnt; 8314 u_int32_t clidrev = 0; 8315 struct nfsmount *nmp = VFSTONFS(vp->v_mount); 8316 struct nfsnode *np = VTONFS(vp); 8317 struct nfsfh *nfhp = NULL; 8318 nfsv4stateid_t stateid; 8319 void *lckp; 8320 8321 if (nmp->nm_clp != NULL) 8322 clidrev = nmp->nm_clp->nfsc_clientidrev; 8323 nfhp = np->n_fhp; 8324 retrycnt = 0; 8325 do { 8326 lckp = NULL; 8327 nfscl_getstateid(vp, nfhp->nfh_fh, nfhp->nfh_len, 8328 NFSV4OPEN_ACCESSREAD, 0, cred, curthread, &stateid, &lckp); 8329 error = nfsrpc_seekrpc(vp, offp, &stateid, eofp, content, 8330 nap, attrflagp, cred); 8331 if (error == NFSERR_STALESTATEID) 8332 nfscl_initiate_recovery(nmp->nm_clp); 8333 if (lckp != NULL) 8334 nfscl_lockderef(lckp); 8335 if (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 8336 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 8337 error == NFSERR_OLDSTATEID || error == NFSERR_BADSESSION) { 8338 (void) nfs_catnap(PZERO, error, "nfs_seek"); 8339 } else if ((error == NFSERR_EXPIRED || 8340 error == NFSERR_BADSTATEID) && clidrev != 0) { 8341 expireret = nfscl_hasexpired(nmp->nm_clp, clidrev, 8342 curthread); 8343 } 8344 retrycnt++; 8345 } while (error == NFSERR_GRACE || error == NFSERR_STALESTATEID || 8346 error == NFSERR_STALEDONTRECOVER || error == NFSERR_DELAY || 8347 error == NFSERR_BADSESSION || 8348 (error == NFSERR_OLDSTATEID && retrycnt < 20) || 8349 ((error == NFSERR_EXPIRED || error == NFSERR_BADSTATEID) && 8350 expireret == 0 && clidrev != 0 && retrycnt < 4) || 8351 (error == NFSERR_OPENMODE && retrycnt < 4)); 8352 if (error && retrycnt >= 4) 8353 error = EIO; 8354 return (error); 8355 } 8356 8357 /* 8358 * The seek RPC. 8359 */ 8360 static int 8361 nfsrpc_seekrpc(vnode_t vp, off_t *offp, nfsv4stateid_t *stateidp, bool *eofp, 8362 int content, struct nfsvattr *nap, int *attrflagp, struct ucred *cred) 8363 { 8364 uint32_t *tl; 8365 int error; 8366 struct nfsrv_descript nfsd; 8367 struct nfsrv_descript *nd = &nfsd; 8368 nfsattrbit_t attrbits; 8369 8370 *attrflagp = 0; 8371 NFSCL_REQSTART(nd, NFSPROC_SEEK, vp); 8372 nfsm_stateidtom(nd, stateidp, NFSSTATEID_PUTSTATEID); 8373 NFSM_BUILD(tl, uint32_t *, NFSX_HYPER + 2 * NFSX_UNSIGNED); 8374 txdr_hyper(*offp, tl); tl += 2; 8375 *tl++ = txdr_unsigned(content); 8376 *tl = txdr_unsigned(NFSV4OP_GETATTR); 8377 NFSGETATTR_ATTRBIT(&attrbits); 8378 nfsrv_putattrbit(nd, &attrbits); 8379 error = nfscl_request(nd, vp, curthread, cred, NULL); 8380 if (error != 0) 8381 return (error); 8382 if (nd->nd_repstat == 0) { 8383 NFSM_DISSECT(tl, uint32_t *, 3 * NFSX_UNSIGNED + NFSX_HYPER); 8384 if (*tl++ == newnfs_true) 8385 *eofp = true; 8386 else 8387 *eofp = false; 8388 *offp = fxdr_hyper(tl); 8389 /* Just skip over Getattr op status. */ 8390 error = nfsm_loadattr(nd, nap); 8391 if (error == 0) 8392 *attrflagp = 1; 8393 } 8394 error = nd->nd_repstat; 8395 nfsmout: 8396 m_freem(nd->nd_mrep); 8397 return (error); 8398 } 8399 8400 /* 8401 * The getextattr RPC. 8402 */ 8403 int 8404 nfsrpc_getextattr(vnode_t vp, const char *name, struct uio *uiop, ssize_t *lenp, 8405 struct nfsvattr *nap, int *attrflagp, struct ucred *cred, NFSPROC_T *p) 8406 { 8407 uint32_t *tl; 8408 int error; 8409 struct nfsrv_descript nfsd; 8410 struct nfsrv_descript *nd = &nfsd; 8411 nfsattrbit_t attrbits; 8412 uint32_t len, len2; 8413 8414 *attrflagp = 0; 8415 NFSCL_REQSTART(nd, NFSPROC_GETEXTATTR, vp); 8416 nfsm_strtom(nd, name, strlen(name)); 8417 NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED); 8418 *tl = txdr_unsigned(NFSV4OP_GETATTR); 8419 NFSGETATTR_ATTRBIT(&attrbits); 8420 nfsrv_putattrbit(nd, &attrbits); 8421 error = nfscl_request(nd, vp, p, cred, NULL); 8422 if (error != 0) 8423 return (error); 8424 if (nd->nd_repstat == 0) { 8425 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 8426 len = fxdr_unsigned(uint32_t, *tl); 8427 /* Sanity check lengths. */ 8428 if (uiop != NULL && len > 0 && len <= IOSIZE_MAX && 8429 uiop->uio_resid <= UINT32_MAX) { 8430 len2 = uiop->uio_resid; 8431 if (len2 >= len) 8432 error = nfsm_mbufuio(nd, uiop, len); 8433 else { 8434 error = nfsm_mbufuio(nd, uiop, len2); 8435 if (error == 0) { 8436 /* 8437 * nfsm_mbufuio() advances to a multiple 8438 * of 4, so round up len2 as well. Then 8439 * we need to advance over the rest of 8440 * the data, rounding up the remaining 8441 * length. 8442 */ 8443 len2 = NFSM_RNDUP(len2); 8444 len2 = NFSM_RNDUP(len - len2); 8445 if (len2 > 0) 8446 error = nfsm_advance(nd, len2, 8447 -1); 8448 } 8449 } 8450 } else if (uiop == NULL && len > 0) { 8451 /* Just wants the length and not the data. */ 8452 error = nfsm_advance(nd, NFSM_RNDUP(len), -1); 8453 } else if (len > 0) 8454 error = ENOATTR; 8455 if (error != 0) 8456 goto nfsmout; 8457 *lenp = len; 8458 /* Just skip over Getattr op status. */ 8459 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED); 8460 error = nfsm_loadattr(nd, nap); 8461 if (error == 0) 8462 *attrflagp = 1; 8463 } 8464 if (error == 0) 8465 error = nd->nd_repstat; 8466 nfsmout: 8467 m_freem(nd->nd_mrep); 8468 return (error); 8469 } 8470 8471 /* 8472 * The setextattr RPC. 8473 */ 8474 int 8475 nfsrpc_setextattr(vnode_t vp, const char *name, struct uio *uiop, 8476 struct nfsvattr *nap, int *attrflagp, struct ucred *cred, NFSPROC_T *p) 8477 { 8478 uint32_t *tl; 8479 int error; 8480 struct nfsrv_descript nfsd; 8481 struct nfsrv_descript *nd = &nfsd; 8482 nfsattrbit_t attrbits; 8483 8484 *attrflagp = 0; 8485 NFSCL_REQSTART(nd, NFSPROC_SETEXTATTR, vp); 8486 if (uiop->uio_resid > nd->nd_maxreq) { 8487 /* nd_maxreq is set by NFSCL_REQSTART(). */ 8488 m_freem(nd->nd_mreq); 8489 return (EINVAL); 8490 } 8491 NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED); 8492 *tl = txdr_unsigned(NFSV4SXATTR_EITHER); 8493 nfsm_strtom(nd, name, strlen(name)); 8494 NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED); 8495 *tl = txdr_unsigned(uiop->uio_resid); 8496 nfsm_uiombuf(nd, uiop, uiop->uio_resid); 8497 NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED); 8498 *tl = txdr_unsigned(NFSV4OP_GETATTR); 8499 NFSGETATTR_ATTRBIT(&attrbits); 8500 nfsrv_putattrbit(nd, &attrbits); 8501 error = nfscl_request(nd, vp, p, cred, NULL); 8502 if (error != 0) 8503 return (error); 8504 if (nd->nd_repstat == 0) { 8505 /* Just skip over the reply and Getattr op status. */ 8506 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_HYPER + 3 * 8507 NFSX_UNSIGNED); 8508 error = nfsm_loadattr(nd, nap); 8509 if (error == 0) 8510 *attrflagp = 1; 8511 } 8512 if (error == 0) 8513 error = nd->nd_repstat; 8514 nfsmout: 8515 m_freem(nd->nd_mrep); 8516 return (error); 8517 } 8518 8519 /* 8520 * The removeextattr RPC. 8521 */ 8522 int 8523 nfsrpc_rmextattr(vnode_t vp, const char *name, struct nfsvattr *nap, 8524 int *attrflagp, struct ucred *cred, NFSPROC_T *p) 8525 { 8526 uint32_t *tl; 8527 int error; 8528 struct nfsrv_descript nfsd; 8529 struct nfsrv_descript *nd = &nfsd; 8530 nfsattrbit_t attrbits; 8531 8532 *attrflagp = 0; 8533 NFSCL_REQSTART(nd, NFSPROC_RMEXTATTR, vp); 8534 nfsm_strtom(nd, name, strlen(name)); 8535 NFSM_BUILD(tl, uint32_t *, NFSX_UNSIGNED); 8536 *tl = txdr_unsigned(NFSV4OP_GETATTR); 8537 NFSGETATTR_ATTRBIT(&attrbits); 8538 nfsrv_putattrbit(nd, &attrbits); 8539 error = nfscl_request(nd, vp, p, cred, NULL); 8540 if (error != 0) 8541 return (error); 8542 if (nd->nd_repstat == 0) { 8543 /* Just skip over the reply and Getattr op status. */ 8544 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_HYPER + 3 * 8545 NFSX_UNSIGNED); 8546 error = nfsm_loadattr(nd, nap); 8547 if (error == 0) 8548 *attrflagp = 1; 8549 } 8550 if (error == 0) 8551 error = nd->nd_repstat; 8552 nfsmout: 8553 m_freem(nd->nd_mrep); 8554 return (error); 8555 } 8556 8557 /* 8558 * The listextattr RPC. 8559 */ 8560 int 8561 nfsrpc_listextattr(vnode_t vp, uint64_t *cookiep, struct uio *uiop, 8562 size_t *lenp, bool *eofp, struct nfsvattr *nap, int *attrflagp, 8563 struct ucred *cred, NFSPROC_T *p) 8564 { 8565 uint32_t *tl; 8566 int cnt, error, i, len; 8567 struct nfsrv_descript nfsd; 8568 struct nfsrv_descript *nd = &nfsd; 8569 nfsattrbit_t attrbits; 8570 u_char c; 8571 8572 *attrflagp = 0; 8573 NFSCL_REQSTART(nd, NFSPROC_LISTEXTATTR, vp); 8574 NFSM_BUILD(tl, uint32_t *, NFSX_HYPER + 2 * NFSX_UNSIGNED); 8575 txdr_hyper(*cookiep, tl); tl += 2; 8576 *tl++ = txdr_unsigned(*lenp); 8577 *tl = txdr_unsigned(NFSV4OP_GETATTR); 8578 NFSGETATTR_ATTRBIT(&attrbits); 8579 nfsrv_putattrbit(nd, &attrbits); 8580 error = nfscl_request(nd, vp, p, cred, NULL); 8581 if (error != 0) 8582 return (error); 8583 *eofp = true; 8584 *lenp = 0; 8585 if (nd->nd_repstat == 0) { 8586 NFSM_DISSECT(tl, uint32_t *, NFSX_HYPER + NFSX_UNSIGNED); 8587 *cookiep = fxdr_hyper(tl); tl += 2; 8588 cnt = fxdr_unsigned(int, *tl); 8589 if (cnt < 0) { 8590 error = EBADRPC; 8591 goto nfsmout; 8592 } 8593 for (i = 0; i < cnt; i++) { 8594 NFSM_DISSECT(tl, uint32_t *, NFSX_UNSIGNED); 8595 len = fxdr_unsigned(int, *tl); 8596 if (len <= 0 || len > EXTATTR_MAXNAMELEN) { 8597 error = EBADRPC; 8598 goto nfsmout; 8599 } 8600 if (uiop == NULL) 8601 error = nfsm_advance(nd, NFSM_RNDUP(len), -1); 8602 else if (uiop->uio_resid >= len + 1) { 8603 c = len; 8604 error = uiomove(&c, sizeof(c), uiop); 8605 if (error == 0) 8606 error = nfsm_mbufuio(nd, uiop, len); 8607 } else { 8608 error = nfsm_advance(nd, NFSM_RNDUP(len), -1); 8609 *eofp = false; 8610 } 8611 if (error != 0) 8612 goto nfsmout; 8613 *lenp += (len + 1); 8614 } 8615 /* Get the eof and skip over the Getattr op status. */ 8616 NFSM_DISSECT(tl, uint32_t *, 3 * NFSX_UNSIGNED); 8617 /* 8618 * *eofp is set false above, because it wasn't able to copy 8619 * all of the reply. 8620 */ 8621 if (*eofp && *tl == 0) 8622 *eofp = false; 8623 error = nfsm_loadattr(nd, nap); 8624 if (error == 0) 8625 *attrflagp = 1; 8626 } 8627 if (error == 0) 8628 error = nd->nd_repstat; 8629 nfsmout: 8630 m_freem(nd->nd_mrep); 8631 return (error); 8632 } 8633 8634 /* 8635 * Split an mbuf list. For non-M_EXTPG mbufs, just use m_split(). 8636 */ 8637 static struct mbuf * 8638 nfsm_split(struct mbuf *mp, uint64_t xfer) 8639 { 8640 struct mbuf *m, *m2; 8641 vm_page_t pg; 8642 int i, j, left, pgno, plen, trim; 8643 char *cp, *cp2; 8644 8645 if ((mp->m_flags & M_EXTPG) == 0) { 8646 m = m_split(mp, xfer, M_WAITOK); 8647 return (m); 8648 } 8649 8650 /* Find the correct mbuf to split at. */ 8651 for (m = mp; m != NULL && xfer > m->m_len; m = m->m_next) 8652 xfer -= m->m_len; 8653 if (m == NULL) 8654 return (NULL); 8655 8656 /* If xfer == m->m_len, we can just split the mbuf list. */ 8657 if (xfer == m->m_len) { 8658 m2 = m->m_next; 8659 m->m_next = NULL; 8660 return (m2); 8661 } 8662 8663 /* Find the page to split at. */ 8664 pgno = 0; 8665 left = xfer; 8666 do { 8667 if (pgno == 0) 8668 plen = m_epg_pagelen(m, 0, m->m_epg_1st_off); 8669 else 8670 plen = m_epg_pagelen(m, pgno, 0); 8671 if (left <= plen) 8672 break; 8673 left -= plen; 8674 pgno++; 8675 } while (pgno < m->m_epg_npgs); 8676 if (pgno == m->m_epg_npgs) 8677 panic("nfsm_split: eroneous ext_pgs mbuf"); 8678 8679 m2 = mb_alloc_ext_pgs(M_WAITOK, mb_free_mext_pgs); 8680 m2->m_epg_flags |= EPG_FLAG_ANON; 8681 8682 /* 8683 * If left < plen, allocate a new page for the new mbuf 8684 * and copy the data after left in the page to this new 8685 * page. 8686 */ 8687 if (left < plen) { 8688 do { 8689 pg = vm_page_alloc(NULL, 0, VM_ALLOC_NORMAL | 8690 VM_ALLOC_NOOBJ | VM_ALLOC_NODUMP | 8691 VM_ALLOC_WIRED); 8692 if (pg == NULL) 8693 vm_wait(NULL); 8694 } while (pg == NULL); 8695 m2->m_epg_pa[0] = VM_PAGE_TO_PHYS(pg); 8696 m2->m_epg_npgs = 1; 8697 8698 /* Copy the data after left to the new page. */ 8699 trim = plen - left; 8700 cp = (char *)(void *)PHYS_TO_DMAP(m->m_epg_pa[pgno]); 8701 if (pgno == 0) 8702 cp += m->m_epg_1st_off; 8703 cp += left; 8704 cp2 = (char *)(void *)PHYS_TO_DMAP(m2->m_epg_pa[0]); 8705 if (pgno == m->m_epg_npgs - 1) 8706 m2->m_epg_last_len = trim; 8707 else { 8708 cp2 += PAGE_SIZE - trim; 8709 m2->m_epg_1st_off = PAGE_SIZE - trim; 8710 m2->m_epg_last_len = m->m_epg_last_len; 8711 } 8712 memcpy(cp2, cp, trim); 8713 m2->m_len = trim; 8714 } else { 8715 m2->m_len = 0; 8716 m2->m_epg_last_len = m->m_epg_last_len; 8717 } 8718 8719 /* Move the pages beyond pgno to the new mbuf. */ 8720 for (i = pgno + 1, j = m2->m_epg_npgs; i < m->m_epg_npgs; i++, j++) { 8721 m2->m_epg_pa[j] = m->m_epg_pa[i]; 8722 /* Never moves page 0. */ 8723 m2->m_len += m_epg_pagelen(m, i, 0); 8724 } 8725 m2->m_epg_npgs = j; 8726 m->m_epg_npgs = pgno + 1; 8727 m->m_epg_last_len = left; 8728 m->m_len = xfer; 8729 8730 m2->m_next = m->m_next; 8731 m->m_next = NULL; 8732 return (m2); 8733 } 8734 8735 /* 8736 * Do the NFSv4.1 Bind Connection to Session. 8737 * Called from the reconnect layer of the krpc (sys/rpc/clnt_rc.c). 8738 */ 8739 void 8740 nfsrpc_bindconnsess(CLIENT *cl, void *arg, struct ucred *cr) 8741 { 8742 struct nfscl_reconarg *rcp = (struct nfscl_reconarg *)arg; 8743 uint32_t res, *tl; 8744 struct nfsrv_descript nfsd; 8745 struct nfsrv_descript *nd = &nfsd; 8746 struct rpc_callextra ext; 8747 struct timeval utimeout; 8748 enum clnt_stat stat; 8749 int error; 8750 8751 nfscl_reqstart(nd, NFSPROC_BINDCONNTOSESS, NULL, NULL, 0, NULL, NULL, 8752 NFS_VER4, rcp->minorvers); 8753 NFSM_BUILD(tl, uint32_t *, NFSX_V4SESSIONID + 2 * NFSX_UNSIGNED); 8754 memcpy(tl, rcp->sessionid, NFSX_V4SESSIONID); 8755 tl += NFSX_V4SESSIONID / NFSX_UNSIGNED; 8756 *tl++ = txdr_unsigned(NFSCDFC4_FORE_OR_BOTH); 8757 *tl = newnfs_false; 8758 8759 memset(&ext, 0, sizeof(ext)); 8760 utimeout.tv_sec = 30; 8761 utimeout.tv_usec = 0; 8762 ext.rc_auth = authunix_create(cr); 8763 nd->nd_mrep = NULL; 8764 stat = CLNT_CALL_MBUF(cl, &ext, NFSV4PROC_COMPOUND, nd->nd_mreq, 8765 &nd->nd_mrep, utimeout); 8766 AUTH_DESTROY(ext.rc_auth); 8767 if (stat != RPC_SUCCESS) { 8768 printf("nfsrpc_bindconnsess: call failed stat=%d\n", stat); 8769 return; 8770 } 8771 if (nd->nd_mrep == NULL) { 8772 printf("nfsrpc_bindconnsess: no reply args\n"); 8773 return; 8774 } 8775 error = 0; 8776 newnfs_realign(&nd->nd_mrep, M_WAITOK); 8777 nd->nd_md = nd->nd_mrep; 8778 nd->nd_dpos = mtod(nd->nd_md, char *); 8779 NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_UNSIGNED); 8780 nd->nd_repstat = fxdr_unsigned(uint32_t, *tl++); 8781 if (nd->nd_repstat == NFSERR_OK) { 8782 res = fxdr_unsigned(uint32_t, *tl); 8783 if (res > 0 && (error = nfsm_advance(nd, NFSM_RNDUP(res), 8784 -1)) != 0) 8785 goto nfsmout; 8786 NFSM_DISSECT(tl, uint32_t *, NFSX_V4SESSIONID + 8787 4 * NFSX_UNSIGNED); 8788 tl += 3; 8789 if (!NFSBCMP(tl, rcp->sessionid, NFSX_V4SESSIONID)) { 8790 tl += NFSX_V4SESSIONID / NFSX_UNSIGNED; 8791 res = fxdr_unsigned(uint32_t, *tl); 8792 if (res != NFSCDFS4_BOTH) 8793 printf("nfsrpc_bindconnsess: did not " 8794 "return FS4_BOTH\n"); 8795 } else 8796 printf("nfsrpc_bindconnsess: not same " 8797 "sessionid\n"); 8798 } else if (nd->nd_repstat != NFSERR_BADSESSION) 8799 printf("nfsrpc_bindconnsess: returned %d\n", nd->nd_repstat); 8800 nfsmout: 8801 if (error != 0) 8802 printf("nfsrpc_bindconnsess: reply bad xdr\n"); 8803 m_freem(nd->nd_mrep); 8804 } 8805