nfs_srvsubs.c revision 9336
1/* 2 * Copyright (c) 1989, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley by 6 * Rick Macklem at The University of Guelph. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by the University of 19 * California, Berkeley and its contributors. 20 * 4. Neither the name of the University nor the names of its contributors 21 * may be used to endorse or promote products derived from this software 22 * without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 * 36 * @(#)nfs_subs.c 8.3 (Berkeley) 1/4/94 37 * $Id: nfs_subs.c,v 1.16 1995/06/14 06:23:38 joerg Exp $ 38 */ 39 40/* 41 * These functions support the macros and help fiddle mbuf chains for 42 * the nfs op functions. They do things like create the rpc header and 43 * copy data between mbuf chains and uio lists. 44 */ 45#include <sys/param.h> 46#include <sys/proc.h> 47#include <sys/systm.h> 48#include <sys/kernel.h> 49#include <sys/mount.h> 50#include <sys/vnode.h> 51#include <sys/namei.h> 52#include <sys/mbuf.h> 53#include <sys/socket.h> 54#include <sys/stat.h> 55#include <sys/malloc.h> 56#ifdef VFS_LKM 57#include <sys/sysent.h> 58#include <sys/syscall.h> 59#endif 60 61#include <vm/vm.h> 62 63#include <nfs/rpcv2.h> 64#include <nfs/nfsproto.h> 65#include <nfs/nfsnode.h> 66#include <nfs/nfs.h> 67#include <nfs/xdr_subs.h> 68#include <nfs/nfsm_subs.h> 69#include <nfs/nfsmount.h> 70#include <nfs/nqnfs.h> 71#include <nfs/nfsrtt.h> 72 73#include <miscfs/specfs/specdev.h> 74 75#include <vm/vnode_pager.h> 76 77#include <netinet/in.h> 78#ifdef ISO 79#include <netiso/iso.h> 80#endif 81 82/* 83 * Data items converted to xdr at startup, since they are constant 84 * This is kinda hokey, but may save a little time doing byte swaps 85 */ 86u_long nfs_xdrneg1; 87u_long rpc_call, rpc_vers, rpc_reply, rpc_msgdenied, rpc_autherr, 88 rpc_mismatch, rpc_auth_unix, rpc_msgaccepted, 89 rpc_auth_kerb; 90u_long nfs_prog, nqnfs_prog, nfs_true, nfs_false; 91 92/* And other global data */ 93static u_long nfs_xid = 0; 94enum vtype nv2tov_type[8] = { VNON, VREG, VDIR, VBLK, VCHR, VLNK, VNON, VNON }; 95enum vtype nv3tov_type[8]={ VNON, VREG, VDIR, VBLK, VCHR, VLNK, VSOCK, VFIFO }; 96int nfs_ticks; 97 98/* 99 * Mapping of old NFS Version 2 RPC numbers to generic numbers. 100 */ 101int nfsv3_procid[NFS_NPROCS] = { 102 NFSPROC_NULL, 103 NFSPROC_GETATTR, 104 NFSPROC_SETATTR, 105 NFSPROC_NOOP, 106 NFSPROC_LOOKUP, 107 NFSPROC_READLINK, 108 NFSPROC_READ, 109 NFSPROC_NOOP, 110 NFSPROC_WRITE, 111 NFSPROC_CREATE, 112 NFSPROC_REMOVE, 113 NFSPROC_RENAME, 114 NFSPROC_LINK, 115 NFSPROC_SYMLINK, 116 NFSPROC_MKDIR, 117 NFSPROC_RMDIR, 118 NFSPROC_READDIR, 119 NFSPROC_FSSTAT, 120 NFSPROC_NOOP, 121 NFSPROC_NOOP, 122 NFSPROC_NOOP, 123 NFSPROC_NOOP, 124 NFSPROC_NOOP, 125 NFSPROC_NOOP, 126 NFSPROC_NOOP, 127 NFSPROC_NOOP 128}; 129 130/* 131 * and the reverse mapping from generic to Version 2 procedure numbers 132 */ 133int nfsv2_procid[NFS_NPROCS] = { 134 NFSV2PROC_NULL, 135 NFSV2PROC_GETATTR, 136 NFSV2PROC_SETATTR, 137 NFSV2PROC_LOOKUP, 138 NFSV2PROC_NOOP, 139 NFSV2PROC_READLINK, 140 NFSV2PROC_READ, 141 NFSV2PROC_WRITE, 142 NFSV2PROC_CREATE, 143 NFSV2PROC_MKDIR, 144 NFSV2PROC_SYMLINK, 145 NFSV2PROC_CREATE, 146 NFSV2PROC_REMOVE, 147 NFSV2PROC_RMDIR, 148 NFSV2PROC_RENAME, 149 NFSV2PROC_LINK, 150 NFSV2PROC_READDIR, 151 NFSV2PROC_NOOP, 152 NFSV2PROC_STATFS, 153 NFSV2PROC_NOOP, 154 NFSV2PROC_NOOP, 155 NFSV2PROC_NOOP, 156 NFSV2PROC_NOOP, 157 NFSV2PROC_NOOP, 158 NFSV2PROC_NOOP, 159 NFSV2PROC_NOOP, 160}; 161 162/* 163 * Maps errno values to nfs error numbers. 164 * Use NFSERR_IO as the catch all for ones not specifically defined in 165 * RFC 1094. 166 */ 167static u_char nfsrv_v2errmap[ELAST] = { 168 NFSERR_PERM, NFSERR_NOENT, NFSERR_IO, NFSERR_IO, NFSERR_IO, 169 NFSERR_NXIO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 170 NFSERR_IO, NFSERR_IO, NFSERR_ACCES, NFSERR_IO, NFSERR_IO, 171 NFSERR_IO, NFSERR_EXIST, NFSERR_IO, NFSERR_NODEV, NFSERR_NOTDIR, 172 NFSERR_ISDIR, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 173 NFSERR_IO, NFSERR_FBIG, NFSERR_NOSPC, NFSERR_IO, NFSERR_ROFS, 174 NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 175 NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 176 NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 177 NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 178 NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 179 NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 180 NFSERR_IO, NFSERR_IO, NFSERR_NAMETOL, NFSERR_IO, NFSERR_IO, 181 NFSERR_NOTEMPTY, NFSERR_IO, NFSERR_IO, NFSERR_DQUOT, NFSERR_STALE, 182 NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 183 NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 184 NFSERR_IO, 185}; 186 187/* 188 * Maps errno values to nfs error numbers. 189 * Although it is not obvious whether or not NFS clients really care if 190 * a returned error value is in the specified list for the procedure, the 191 * safest thing to do is filter them appropriately. For Version 2, the 192 * X/Open XNFS document is the only specification that defines error values 193 * for each RPC (The RFC simply lists all possible error values for all RPCs), 194 * so I have decided to not do this for Version 2. 195 * The first entry is the default error return and the rest are the valid 196 * errors for that RPC in increasing numeric order. 197 */ 198static short nfsv3err_null[] = { 199 0, 200 0, 201}; 202 203static short nfsv3err_getattr[] = { 204 NFSERR_IO, 205 NFSERR_IO, 206 NFSERR_STALE, 207 NFSERR_BADHANDLE, 208 NFSERR_SERVERFAULT, 209 0, 210}; 211 212static short nfsv3err_setattr[] = { 213 NFSERR_IO, 214 NFSERR_PERM, 215 NFSERR_IO, 216 NFSERR_ACCES, 217 NFSERR_INVAL, 218 NFSERR_NOSPC, 219 NFSERR_ROFS, 220 NFSERR_DQUOT, 221 NFSERR_STALE, 222 NFSERR_BADHANDLE, 223 NFSERR_NOT_SYNC, 224 NFSERR_SERVERFAULT, 225 0, 226}; 227 228static short nfsv3err_lookup[] = { 229 NFSERR_IO, 230 NFSERR_NOENT, 231 NFSERR_IO, 232 NFSERR_ACCES, 233 NFSERR_NOTDIR, 234 NFSERR_NAMETOL, 235 NFSERR_STALE, 236 NFSERR_BADHANDLE, 237 NFSERR_SERVERFAULT, 238 0, 239}; 240 241static short nfsv3err_access[] = { 242 NFSERR_IO, 243 NFSERR_IO, 244 NFSERR_STALE, 245 NFSERR_BADHANDLE, 246 NFSERR_SERVERFAULT, 247 0, 248}; 249 250static short nfsv3err_readlink[] = { 251 NFSERR_IO, 252 NFSERR_IO, 253 NFSERR_ACCES, 254 NFSERR_INVAL, 255 NFSERR_STALE, 256 NFSERR_BADHANDLE, 257 NFSERR_NOTSUPP, 258 NFSERR_SERVERFAULT, 259 0, 260}; 261 262static short nfsv3err_read[] = { 263 NFSERR_IO, 264 NFSERR_IO, 265 NFSERR_NXIO, 266 NFSERR_ACCES, 267 NFSERR_INVAL, 268 NFSERR_STALE, 269 NFSERR_BADHANDLE, 270 NFSERR_SERVERFAULT, 271 0, 272}; 273 274static short nfsv3err_write[] = { 275 NFSERR_IO, 276 NFSERR_IO, 277 NFSERR_ACCES, 278 NFSERR_INVAL, 279 NFSERR_FBIG, 280 NFSERR_NOSPC, 281 NFSERR_ROFS, 282 NFSERR_DQUOT, 283 NFSERR_STALE, 284 NFSERR_BADHANDLE, 285 NFSERR_SERVERFAULT, 286 0, 287}; 288 289static short nfsv3err_create[] = { 290 NFSERR_IO, 291 NFSERR_IO, 292 NFSERR_ACCES, 293 NFSERR_EXIST, 294 NFSERR_NOTDIR, 295 NFSERR_NOSPC, 296 NFSERR_ROFS, 297 NFSERR_NAMETOL, 298 NFSERR_DQUOT, 299 NFSERR_STALE, 300 NFSERR_BADHANDLE, 301 NFSERR_NOTSUPP, 302 NFSERR_SERVERFAULT, 303 0, 304}; 305 306static short nfsv3err_mkdir[] = { 307 NFSERR_IO, 308 NFSERR_IO, 309 NFSERR_ACCES, 310 NFSERR_EXIST, 311 NFSERR_NOTDIR, 312 NFSERR_NOSPC, 313 NFSERR_ROFS, 314 NFSERR_NAMETOL, 315 NFSERR_DQUOT, 316 NFSERR_STALE, 317 NFSERR_BADHANDLE, 318 NFSERR_NOTSUPP, 319 NFSERR_SERVERFAULT, 320 0, 321}; 322 323static short nfsv3err_symlink[] = { 324 NFSERR_IO, 325 NFSERR_IO, 326 NFSERR_ACCES, 327 NFSERR_EXIST, 328 NFSERR_NOTDIR, 329 NFSERR_NOSPC, 330 NFSERR_ROFS, 331 NFSERR_NAMETOL, 332 NFSERR_DQUOT, 333 NFSERR_STALE, 334 NFSERR_BADHANDLE, 335 NFSERR_NOTSUPP, 336 NFSERR_SERVERFAULT, 337 0, 338}; 339 340static short nfsv3err_mknod[] = { 341 NFSERR_IO, 342 NFSERR_IO, 343 NFSERR_ACCES, 344 NFSERR_EXIST, 345 NFSERR_NOTDIR, 346 NFSERR_NOSPC, 347 NFSERR_ROFS, 348 NFSERR_NAMETOL, 349 NFSERR_DQUOT, 350 NFSERR_STALE, 351 NFSERR_BADHANDLE, 352 NFSERR_NOTSUPP, 353 NFSERR_SERVERFAULT, 354 NFSERR_BADTYPE, 355 0, 356}; 357 358static short nfsv3err_remove[] = { 359 NFSERR_IO, 360 NFSERR_NOENT, 361 NFSERR_IO, 362 NFSERR_ACCES, 363 NFSERR_NOTDIR, 364 NFSERR_ROFS, 365 NFSERR_NAMETOL, 366 NFSERR_STALE, 367 NFSERR_BADHANDLE, 368 NFSERR_SERVERFAULT, 369 0, 370}; 371 372static short nfsv3err_rmdir[] = { 373 NFSERR_IO, 374 NFSERR_NOENT, 375 NFSERR_IO, 376 NFSERR_ACCES, 377 NFSERR_EXIST, 378 NFSERR_NOTDIR, 379 NFSERR_INVAL, 380 NFSERR_ROFS, 381 NFSERR_NAMETOL, 382 NFSERR_NOTEMPTY, 383 NFSERR_STALE, 384 NFSERR_BADHANDLE, 385 NFSERR_NOTSUPP, 386 NFSERR_SERVERFAULT, 387 0, 388}; 389 390static short nfsv3err_rename[] = { 391 NFSERR_IO, 392 NFSERR_NOENT, 393 NFSERR_IO, 394 NFSERR_ACCES, 395 NFSERR_EXIST, 396 NFSERR_XDEV, 397 NFSERR_NOTDIR, 398 NFSERR_ISDIR, 399 NFSERR_INVAL, 400 NFSERR_NOSPC, 401 NFSERR_ROFS, 402 NFSERR_MLINK, 403 NFSERR_NAMETOL, 404 NFSERR_NOTEMPTY, 405 NFSERR_DQUOT, 406 NFSERR_STALE, 407 NFSERR_BADHANDLE, 408 NFSERR_NOTSUPP, 409 NFSERR_SERVERFAULT, 410 0, 411}; 412 413static short nfsv3err_link[] = { 414 NFSERR_IO, 415 NFSERR_IO, 416 NFSERR_ACCES, 417 NFSERR_EXIST, 418 NFSERR_XDEV, 419 NFSERR_NOTDIR, 420 NFSERR_INVAL, 421 NFSERR_NOSPC, 422 NFSERR_ROFS, 423 NFSERR_MLINK, 424 NFSERR_NAMETOL, 425 NFSERR_DQUOT, 426 NFSERR_STALE, 427 NFSERR_BADHANDLE, 428 NFSERR_NOTSUPP, 429 NFSERR_SERVERFAULT, 430 0, 431}; 432 433static short nfsv3err_readdir[] = { 434 NFSERR_IO, 435 NFSERR_IO, 436 NFSERR_ACCES, 437 NFSERR_NOTDIR, 438 NFSERR_STALE, 439 NFSERR_BADHANDLE, 440 NFSERR_BAD_COOKIE, 441 NFSERR_TOOSMALL, 442 NFSERR_SERVERFAULT, 443 0, 444}; 445 446static short nfsv3err_readdirplus[] = { 447 NFSERR_IO, 448 NFSERR_IO, 449 NFSERR_ACCES, 450 NFSERR_NOTDIR, 451 NFSERR_STALE, 452 NFSERR_BADHANDLE, 453 NFSERR_BAD_COOKIE, 454 NFSERR_NOTSUPP, 455 NFSERR_TOOSMALL, 456 NFSERR_SERVERFAULT, 457 0, 458}; 459 460static short nfsv3err_fsstat[] = { 461 NFSERR_IO, 462 NFSERR_IO, 463 NFSERR_STALE, 464 NFSERR_BADHANDLE, 465 NFSERR_SERVERFAULT, 466 0, 467}; 468 469static short nfsv3err_fsinfo[] = { 470 NFSERR_STALE, 471 NFSERR_STALE, 472 NFSERR_BADHANDLE, 473 NFSERR_SERVERFAULT, 474 0, 475}; 476 477static short nfsv3err_pathconf[] = { 478 NFSERR_STALE, 479 NFSERR_STALE, 480 NFSERR_BADHANDLE, 481 NFSERR_SERVERFAULT, 482 0, 483}; 484 485static short nfsv3err_commit[] = { 486 NFSERR_IO, 487 NFSERR_IO, 488 NFSERR_STALE, 489 NFSERR_BADHANDLE, 490 NFSERR_SERVERFAULT, 491 0, 492}; 493 494static short *nfsrv_v3errmap[] = { 495 nfsv3err_null, 496 nfsv3err_getattr, 497 nfsv3err_setattr, 498 nfsv3err_lookup, 499 nfsv3err_access, 500 nfsv3err_readlink, 501 nfsv3err_read, 502 nfsv3err_write, 503 nfsv3err_create, 504 nfsv3err_mkdir, 505 nfsv3err_symlink, 506 nfsv3err_mknod, 507 nfsv3err_remove, 508 nfsv3err_rmdir, 509 nfsv3err_rename, 510 nfsv3err_link, 511 nfsv3err_readdir, 512 nfsv3err_readdirplus, 513 nfsv3err_fsstat, 514 nfsv3err_fsinfo, 515 nfsv3err_pathconf, 516 nfsv3err_commit, 517}; 518 519extern struct proc *nfs_iodwant[NFS_MAXASYNCDAEMON]; 520extern struct nfsrtt nfsrtt; 521extern time_t nqnfsstarttime; 522extern int nqsrv_clockskew; 523extern int nqsrv_writeslack; 524extern int nqsrv_maxlease; 525extern struct nfsstats nfsstats; 526extern int nqnfs_piggy[NFS_NPROCS]; 527extern nfstype nfsv2_type[9]; 528extern nfstype nfsv3_type[9]; 529extern struct nfsnodehashhead *nfsnodehashtbl; 530extern u_long nfsnodehash; 531 532#ifdef VFS_LKM 533struct getfh_args; 534extern int getfh(struct proc *, struct getfh_args *, int *); 535struct nfssvc_args; 536extern int nfssvc(struct proc *, struct nfssvc_args *, int *); 537#endif 538 539LIST_HEAD(nfsnodehashhead, nfsnode); 540 541/* 542 * Create the header for an rpc request packet 543 * The hsiz is the size of the rest of the nfs request header. 544 * (just used to decide if a cluster is a good idea) 545 */ 546struct mbuf * 547nfsm_reqh(vp, procid, hsiz, bposp) 548 struct vnode *vp; 549 u_long procid; 550 int hsiz; 551 caddr_t *bposp; 552{ 553 register struct mbuf *mb; 554 register u_long *tl; 555 register caddr_t bpos; 556 struct mbuf *mb2; 557 struct nfsmount *nmp; 558 int nqflag; 559 560 MGET(mb, M_WAIT, MT_DATA); 561 if (hsiz >= MINCLSIZE) 562 MCLGET(mb, M_WAIT); 563 mb->m_len = 0; 564 bpos = mtod(mb, caddr_t); 565 566 /* 567 * For NQNFS, add lease request. 568 */ 569 if (vp) { 570 nmp = VFSTONFS(vp->v_mount); 571 if (nmp->nm_flag & NFSMNT_NQNFS) { 572 nqflag = NQNFS_NEEDLEASE(vp, procid); 573 if (nqflag) { 574 nfsm_build(tl, u_long *, 2*NFSX_UNSIGNED); 575 *tl++ = txdr_unsigned(nqflag); 576 *tl = txdr_unsigned(nmp->nm_leaseterm); 577 } else { 578 nfsm_build(tl, u_long *, NFSX_UNSIGNED); 579 *tl = 0; 580 } 581 } 582 } 583 /* Finally, return values */ 584 *bposp = bpos; 585 return (mb); 586} 587 588/* 589 * Build the RPC header and fill in the authorization info. 590 * The authorization string argument is only used when the credentials 591 * come from outside of the kernel. 592 * Returns the head of the mbuf list. 593 */ 594struct mbuf * 595nfsm_rpchead(cr, nmflag, procid, auth_type, auth_len, auth_str, verf_len, 596 verf_str, mrest, mrest_len, mbp, xidp) 597 register struct ucred *cr; 598 int nmflag; 599 int procid; 600 int auth_type; 601 int auth_len; 602 char *auth_str; 603 int verf_len; 604 char *verf_str; 605 struct mbuf *mrest; 606 int mrest_len; 607 struct mbuf **mbp; 608 u_long *xidp; 609{ 610 register struct mbuf *mb; 611 register u_long *tl; 612 register caddr_t bpos; 613 register int i; 614 struct mbuf *mreq, *mb2; 615 int siz, grpsiz, authsiz; 616 617 authsiz = nfsm_rndup(auth_len); 618 MGETHDR(mb, M_WAIT, MT_DATA); 619 if ((authsiz + 10 * NFSX_UNSIGNED) >= MINCLSIZE) { 620 MCLGET(mb, M_WAIT); 621 } else if ((authsiz + 10 * NFSX_UNSIGNED) < MHLEN) { 622 MH_ALIGN(mb, authsiz + 10 * NFSX_UNSIGNED); 623 } else { 624 MH_ALIGN(mb, 8 * NFSX_UNSIGNED); 625 } 626 mb->m_len = 0; 627 mreq = mb; 628 bpos = mtod(mb, caddr_t); 629 630 /* 631 * First the RPC header. 632 */ 633 nfsm_build(tl, u_long *, 8 * NFSX_UNSIGNED); 634 if (++nfs_xid == 0) 635 nfs_xid++; 636 *tl++ = *xidp = txdr_unsigned(nfs_xid); 637 *tl++ = rpc_call; 638 *tl++ = rpc_vers; 639 if (nmflag & NFSMNT_NQNFS) { 640 *tl++ = txdr_unsigned(NQNFS_PROG); 641 *tl++ = txdr_unsigned(NQNFS_VER3); 642 } else { 643 *tl++ = txdr_unsigned(NFS_PROG); 644 if (nmflag & NFSMNT_NFSV3) 645 *tl++ = txdr_unsigned(NFS_VER3); 646 else 647 *tl++ = txdr_unsigned(NFS_VER2); 648 } 649 if (nmflag & NFSMNT_NFSV3) 650 *tl++ = txdr_unsigned(procid); 651 else 652 *tl++ = txdr_unsigned(nfsv2_procid[procid]); 653 654 /* 655 * And then the authorization cred. 656 */ 657 *tl++ = txdr_unsigned(auth_type); 658 *tl = txdr_unsigned(authsiz); 659 switch (auth_type) { 660 case RPCAUTH_UNIX: 661 nfsm_build(tl, u_long *, auth_len); 662 *tl++ = 0; /* stamp ?? */ 663 *tl++ = 0; /* NULL hostname */ 664 *tl++ = txdr_unsigned(cr->cr_uid); 665 *tl++ = txdr_unsigned(cr->cr_groups[0]); 666 grpsiz = (auth_len >> 2) - 5; 667 *tl++ = txdr_unsigned(grpsiz); 668 for (i = 1; i <= grpsiz; i++) 669 *tl++ = txdr_unsigned(cr->cr_groups[i]); 670 break; 671 case RPCAUTH_KERB4: 672 siz = auth_len; 673 while (siz > 0) { 674 if (M_TRAILINGSPACE(mb) == 0) { 675 MGET(mb2, M_WAIT, MT_DATA); 676 if (siz >= MINCLSIZE) 677 MCLGET(mb2, M_WAIT); 678 mb->m_next = mb2; 679 mb = mb2; 680 mb->m_len = 0; 681 bpos = mtod(mb, caddr_t); 682 } 683 i = min(siz, M_TRAILINGSPACE(mb)); 684 bcopy(auth_str, bpos, i); 685 mb->m_len += i; 686 auth_str += i; 687 bpos += i; 688 siz -= i; 689 } 690 if ((siz = (nfsm_rndup(auth_len) - auth_len)) > 0) { 691 for (i = 0; i < siz; i++) 692 *bpos++ = '\0'; 693 mb->m_len += siz; 694 } 695 break; 696 }; 697 698 /* 699 * And the verifier... 700 */ 701 nfsm_build(tl, u_long *, 2 * NFSX_UNSIGNED); 702 if (verf_str) { 703 *tl++ = txdr_unsigned(RPCAUTH_KERB4); 704 *tl = txdr_unsigned(verf_len); 705 siz = verf_len; 706 while (siz > 0) { 707 if (M_TRAILINGSPACE(mb) == 0) { 708 MGET(mb2, M_WAIT, MT_DATA); 709 if (siz >= MINCLSIZE) 710 MCLGET(mb2, M_WAIT); 711 mb->m_next = mb2; 712 mb = mb2; 713 mb->m_len = 0; 714 bpos = mtod(mb, caddr_t); 715 } 716 i = min(siz, M_TRAILINGSPACE(mb)); 717 bcopy(verf_str, bpos, i); 718 mb->m_len += i; 719 verf_str += i; 720 bpos += i; 721 siz -= i; 722 } 723 if ((siz = (nfsm_rndup(verf_len) - verf_len)) > 0) { 724 for (i = 0; i < siz; i++) 725 *bpos++ = '\0'; 726 mb->m_len += siz; 727 } 728 } else { 729 *tl++ = txdr_unsigned(RPCAUTH_NULL); 730 *tl = 0; 731 } 732 mb->m_next = mrest; 733 mreq->m_pkthdr.len = authsiz + 10 * NFSX_UNSIGNED + mrest_len; 734 mreq->m_pkthdr.rcvif = (struct ifnet *)0; 735 *mbp = mb; 736 return (mreq); 737} 738 739/* 740 * copies mbuf chain to the uio scatter/gather list 741 */ 742int 743nfsm_mbuftouio(mrep, uiop, siz, dpos) 744 struct mbuf **mrep; 745 register struct uio *uiop; 746 int siz; 747 caddr_t *dpos; 748{ 749 register char *mbufcp, *uiocp; 750 register int xfer, left, len; 751 register struct mbuf *mp; 752 long uiosiz, rem; 753 int error = 0; 754 755 mp = *mrep; 756 mbufcp = *dpos; 757 len = mtod(mp, caddr_t)+mp->m_len-mbufcp; 758 rem = nfsm_rndup(siz)-siz; 759 while (siz > 0) { 760 if (uiop->uio_iovcnt <= 0 || uiop->uio_iov == NULL) 761 return (EFBIG); 762 left = uiop->uio_iov->iov_len; 763 uiocp = uiop->uio_iov->iov_base; 764 if (left > siz) 765 left = siz; 766 uiosiz = left; 767 while (left > 0) { 768 while (len == 0) { 769 mp = mp->m_next; 770 if (mp == NULL) 771 return (EBADRPC); 772 mbufcp = mtod(mp, caddr_t); 773 len = mp->m_len; 774 } 775 xfer = (left > len) ? len : left; 776#ifdef notdef 777 /* Not Yet.. */ 778 if (uiop->uio_iov->iov_op != NULL) 779 (*(uiop->uio_iov->iov_op)) 780 (mbufcp, uiocp, xfer); 781 else 782#endif 783 if (uiop->uio_segflg == UIO_SYSSPACE) 784 bcopy(mbufcp, uiocp, xfer); 785 else 786 copyout(mbufcp, uiocp, xfer); 787 left -= xfer; 788 len -= xfer; 789 mbufcp += xfer; 790 uiocp += xfer; 791 uiop->uio_offset += xfer; 792 uiop->uio_resid -= xfer; 793 } 794 if (uiop->uio_iov->iov_len <= siz) { 795 uiop->uio_iovcnt--; 796 uiop->uio_iov++; 797 } else { 798 uiop->uio_iov->iov_base += uiosiz; 799 uiop->uio_iov->iov_len -= uiosiz; 800 } 801 siz -= uiosiz; 802 } 803 *dpos = mbufcp; 804 *mrep = mp; 805 if (rem > 0) { 806 if (len < rem) 807 error = nfs_adv(mrep, dpos, rem, len); 808 else 809 *dpos += rem; 810 } 811 return (error); 812} 813 814/* 815 * copies a uio scatter/gather list to an mbuf chain... 816 */ 817int 818nfsm_uiotombuf(uiop, mq, siz, bpos) 819 register struct uio *uiop; 820 struct mbuf **mq; 821 int siz; 822 caddr_t *bpos; 823{ 824 register char *uiocp; 825 register struct mbuf *mp, *mp2; 826 register int xfer, left, mlen; 827 int uiosiz, clflg, rem; 828 char *cp; 829 830 if (siz > MLEN) /* or should it >= MCLBYTES ?? */ 831 clflg = 1; 832 else 833 clflg = 0; 834 rem = nfsm_rndup(siz)-siz; 835 mp = mp2 = *mq; 836 while (siz > 0) { 837 if (uiop->uio_iovcnt <= 0 || uiop->uio_iov == NULL) 838 return (EINVAL); 839 left = uiop->uio_iov->iov_len; 840 uiocp = uiop->uio_iov->iov_base; 841 if (left > siz) 842 left = siz; 843 uiosiz = left; 844 while (left > 0) { 845 mlen = M_TRAILINGSPACE(mp); 846 if (mlen == 0) { 847 MGET(mp, M_WAIT, MT_DATA); 848 if (clflg) 849 MCLGET(mp, M_WAIT); 850 mp->m_len = 0; 851 mp2->m_next = mp; 852 mp2 = mp; 853 mlen = M_TRAILINGSPACE(mp); 854 } 855 xfer = (left > mlen) ? mlen : left; 856#ifdef notdef 857 /* Not Yet.. */ 858 if (uiop->uio_iov->iov_op != NULL) 859 (*(uiop->uio_iov->iov_op)) 860 (uiocp, mtod(mp, caddr_t)+mp->m_len, xfer); 861 else 862#endif 863 if (uiop->uio_segflg == UIO_SYSSPACE) 864 bcopy(uiocp, mtod(mp, caddr_t)+mp->m_len, xfer); 865 else 866 copyin(uiocp, mtod(mp, caddr_t)+mp->m_len, xfer); 867 mp->m_len += xfer; 868 left -= xfer; 869 uiocp += xfer; 870 uiop->uio_offset += xfer; 871 uiop->uio_resid -= xfer; 872 } 873 if (uiop->uio_iov->iov_len <= siz) { 874 uiop->uio_iovcnt--; 875 uiop->uio_iov++; 876 } else { 877 uiop->uio_iov->iov_base += uiosiz; 878 uiop->uio_iov->iov_len -= uiosiz; 879 } 880 siz -= uiosiz; 881 } 882 if (rem > 0) { 883 if (rem > M_TRAILINGSPACE(mp)) { 884 MGET(mp, M_WAIT, MT_DATA); 885 mp->m_len = 0; 886 mp2->m_next = mp; 887 } 888 cp = mtod(mp, caddr_t)+mp->m_len; 889 for (left = 0; left < rem; left++) 890 *cp++ = '\0'; 891 mp->m_len += rem; 892 *bpos = cp; 893 } else 894 *bpos = mtod(mp, caddr_t)+mp->m_len; 895 *mq = mp; 896 return (0); 897} 898 899/* 900 * Help break down an mbuf chain by setting the first siz bytes contiguous 901 * pointed to by returned val. 902 * This is used by the macros nfsm_dissect and nfsm_dissecton for tough 903 * cases. (The macros use the vars. dpos and dpos2) 904 */ 905int 906nfsm_disct(mdp, dposp, siz, left, cp2) 907 struct mbuf **mdp; 908 caddr_t *dposp; 909 int siz; 910 int left; 911 caddr_t *cp2; 912{ 913 register struct mbuf *mp, *mp2; 914 register int siz2, xfer; 915 register caddr_t p; 916 917 mp = *mdp; 918 while (left == 0) { 919 *mdp = mp = mp->m_next; 920 if (mp == NULL) 921 return (EBADRPC); 922 left = mp->m_len; 923 *dposp = mtod(mp, caddr_t); 924 } 925 if (left >= siz) { 926 *cp2 = *dposp; 927 *dposp += siz; 928 } else if (mp->m_next == NULL) { 929 return (EBADRPC); 930 } else if (siz > MHLEN) { 931 panic("nfs S too big"); 932 } else { 933 MGET(mp2, M_WAIT, MT_DATA); 934 mp2->m_next = mp->m_next; 935 mp->m_next = mp2; 936 mp->m_len -= left; 937 mp = mp2; 938 *cp2 = p = mtod(mp, caddr_t); 939 bcopy(*dposp, p, left); /* Copy what was left */ 940 siz2 = siz-left; 941 p += left; 942 mp2 = mp->m_next; 943 /* Loop around copying up the siz2 bytes */ 944 while (siz2 > 0) { 945 if (mp2 == NULL) 946 return (EBADRPC); 947 xfer = (siz2 > mp2->m_len) ? mp2->m_len : siz2; 948 if (xfer > 0) { 949 bcopy(mtod(mp2, caddr_t), p, xfer); 950 NFSMADV(mp2, xfer); 951 mp2->m_len -= xfer; 952 p += xfer; 953 siz2 -= xfer; 954 } 955 if (siz2 > 0) 956 mp2 = mp2->m_next; 957 } 958 mp->m_len = siz; 959 *mdp = mp2; 960 *dposp = mtod(mp2, caddr_t); 961 } 962 return (0); 963} 964 965/* 966 * Advance the position in the mbuf chain. 967 */ 968int 969nfs_adv(mdp, dposp, offs, left) 970 struct mbuf **mdp; 971 caddr_t *dposp; 972 int offs; 973 int left; 974{ 975 register struct mbuf *m; 976 register int s; 977 978 m = *mdp; 979 s = left; 980 while (s < offs) { 981 offs -= s; 982 m = m->m_next; 983 if (m == NULL) 984 return (EBADRPC); 985 s = m->m_len; 986 } 987 *mdp = m; 988 *dposp = mtod(m, caddr_t)+offs; 989 return (0); 990} 991 992/* 993 * Copy a string into mbufs for the hard cases... 994 */ 995int 996nfsm_strtmbuf(mb, bpos, cp, siz) 997 struct mbuf **mb; 998 char **bpos; 999 char *cp; 1000 long siz; 1001{ 1002 register struct mbuf *m1 = 0, *m2; 1003 long left, xfer, len, tlen; 1004 u_long *tl; 1005 int putsize; 1006 1007 putsize = 1; 1008 m2 = *mb; 1009 left = M_TRAILINGSPACE(m2); 1010 if (left > 0) { 1011 tl = ((u_long *)(*bpos)); 1012 *tl++ = txdr_unsigned(siz); 1013 putsize = 0; 1014 left -= NFSX_UNSIGNED; 1015 m2->m_len += NFSX_UNSIGNED; 1016 if (left > 0) { 1017 bcopy(cp, (caddr_t) tl, left); 1018 siz -= left; 1019 cp += left; 1020 m2->m_len += left; 1021 left = 0; 1022 } 1023 } 1024 /* Loop around adding mbufs */ 1025 while (siz > 0) { 1026 MGET(m1, M_WAIT, MT_DATA); 1027 if (siz > MLEN) 1028 MCLGET(m1, M_WAIT); 1029 m1->m_len = NFSMSIZ(m1); 1030 m2->m_next = m1; 1031 m2 = m1; 1032 tl = mtod(m1, u_long *); 1033 tlen = 0; 1034 if (putsize) { 1035 *tl++ = txdr_unsigned(siz); 1036 m1->m_len -= NFSX_UNSIGNED; 1037 tlen = NFSX_UNSIGNED; 1038 putsize = 0; 1039 } 1040 if (siz < m1->m_len) { 1041 len = nfsm_rndup(siz); 1042 xfer = siz; 1043 if (xfer < len) 1044 *(tl+(xfer>>2)) = 0; 1045 } else { 1046 xfer = len = m1->m_len; 1047 } 1048 bcopy(cp, (caddr_t) tl, xfer); 1049 m1->m_len = len+tlen; 1050 siz -= xfer; 1051 cp += xfer; 1052 } 1053 *mb = m1; 1054 *bpos = mtod(m1, caddr_t)+m1->m_len; 1055 return (0); 1056} 1057 1058/* 1059 * Called once to initialize data structures... 1060 */ 1061int 1062nfs_init() 1063{ 1064 register int i; 1065 1066 /* 1067 * Check to see if major data structures haven't bloated. 1068 */ 1069 if (sizeof (struct nfsnode) > NFS_NODEALLOC) { 1070 printf("struct nfsnode bloated (> %dbytes)\n", NFS_NODEALLOC); 1071 printf("Try reducing NFS_SMALLFH\n"); 1072 } 1073 if (sizeof (struct nfsmount) > NFS_MNTALLOC) { 1074 printf("struct nfsmount bloated (> %dbytes)\n", NFS_MNTALLOC); 1075 printf("Try reducing NFS_MUIDHASHSIZ\n"); 1076 } 1077 if (sizeof (struct nfssvc_sock) > NFS_SVCALLOC) { 1078 printf("struct nfssvc_sock bloated (> %dbytes)\n",NFS_SVCALLOC); 1079 printf("Try reducing NFS_UIDHASHSIZ\n"); 1080 } 1081 if (sizeof (struct nfsuid) > NFS_UIDALLOC) { 1082 printf("struct nfsuid bloated (> %dbytes)\n",NFS_UIDALLOC); 1083 printf("Try unionizing the nu_nickname and nu_flag fields\n"); 1084 } 1085 nfsrtt.pos = 0; 1086 rpc_vers = txdr_unsigned(RPC_VER2); 1087 rpc_call = txdr_unsigned(RPC_CALL); 1088 rpc_reply = txdr_unsigned(RPC_REPLY); 1089 rpc_msgdenied = txdr_unsigned(RPC_MSGDENIED); 1090 rpc_msgaccepted = txdr_unsigned(RPC_MSGACCEPTED); 1091 rpc_mismatch = txdr_unsigned(RPC_MISMATCH); 1092 rpc_autherr = txdr_unsigned(RPC_AUTHERR); 1093 rpc_auth_unix = txdr_unsigned(RPCAUTH_UNIX); 1094 rpc_auth_kerb = txdr_unsigned(RPCAUTH_KERB4); 1095 nfs_prog = txdr_unsigned(NFS_PROG); 1096 nqnfs_prog = txdr_unsigned(NQNFS_PROG); 1097 nfs_true = txdr_unsigned(TRUE); 1098 nfs_false = txdr_unsigned(FALSE); 1099 nfs_xdrneg1 = txdr_unsigned(-1); 1100 nfs_ticks = (hz * NFS_TICKINTVL + 500) / 1000; 1101 if (nfs_ticks < 1) 1102 nfs_ticks = 1; 1103 /* Ensure async daemons disabled */ 1104 for (i = 0; i < NFS_MAXASYNCDAEMON; i++) 1105 nfs_iodwant[i] = (struct proc *)0; 1106 TAILQ_INIT(&nfs_bufq); 1107 nfs_nhinit(); /* Init the nfsnode table */ 1108 nfsrv_init(0); /* Init server data structures */ 1109 nfsrv_initcache(); /* Init the server request cache */ 1110 1111 /* 1112 * Initialize the nqnfs server stuff. 1113 */ 1114 if (nqnfsstarttime == 0) { 1115 nqnfsstarttime = boottime.tv_sec + nqsrv_maxlease 1116 + nqsrv_clockskew + nqsrv_writeslack; 1117 NQLOADNOVRAM(nqnfsstarttime); 1118 CIRCLEQ_INIT(&nqtimerhead); 1119 nqfhhashtbl = hashinit(NQLCHSZ, M_NQLEASE, &nqfhhash); 1120 } 1121 1122 /* 1123 * Initialize reply list and start timer 1124 */ 1125 TAILQ_INIT(&nfs_reqq); 1126 nfs_timer(0); 1127 1128#ifdef __FreeBSD__ 1129 /* 1130 * Set up lease_check and lease_updatetime so that other parts 1131 * of the system can call us, if we are loadable. 1132 */ 1133 lease_check = nfs_lease_check; 1134 lease_updatetime = nfs_lease_updatetime; 1135 vfsconf[MOUNT_NFS]->vfc_refcount++; /* make us non-unloadable */ 1136#ifdef VFS_LKM 1137 sysent[SYS_nfssvc].sy_narg = 2; 1138 sysent[SYS_nfssvc].sy_call = nfssvc; 1139 sysent[SYS_getfh].sy_narg = 2; 1140 sysent[SYS_getfh].sy_call = getfh; 1141#endif 1142#endif 1143 1144 return (0); 1145} 1146 1147/* 1148 * Attribute cache routines. 1149 * nfs_loadattrcache() - loads or updates the cache contents from attributes 1150 * that are on the mbuf list 1151 * nfs_getattrcache() - returns valid attributes if found in cache, returns 1152 * error otherwise 1153 */ 1154 1155/* 1156 * Load the attribute cache (that lives in the nfsnode entry) with 1157 * the values on the mbuf list and 1158 * Iff vap not NULL 1159 * copy the attributes to *vaper 1160 */ 1161int 1162nfs_loadattrcache(vpp, mdp, dposp, vaper) 1163 struct vnode **vpp; 1164 struct mbuf **mdp; 1165 caddr_t *dposp; 1166 struct vattr *vaper; 1167{ 1168 register struct vnode *vp = *vpp; 1169 register struct vattr *vap; 1170 register struct nfs_fattr *fp; 1171 register struct nfsnode *np; 1172 register struct nfsnodehashhead *nhpp; 1173 register long t1; 1174 caddr_t cp2; 1175 int error = 0, rdev; 1176 struct mbuf *md; 1177 enum vtype vtyp; 1178 u_short vmode; 1179 struct timespec mtime; 1180 struct vnode *nvp; 1181 quad_t tval; 1182 int v3 = NFS_ISV3(vp); 1183 1184 md = *mdp; 1185 t1 = (mtod(md, caddr_t) + md->m_len) - *dposp; 1186 if (error = nfsm_disct(mdp, dposp, NFSX_FATTR(v3), t1, &cp2)) 1187 return (error); 1188 fp = (struct nfs_fattr *)cp2; 1189 if (v3) { 1190 vtyp = nfsv3tov_type(fp->fa_type); 1191 vmode = fxdr_unsigned(u_short, fp->fa_mode); 1192 rdev = makedev(fxdr_unsigned(u_char, fp->fa3_rdev.specdata1), 1193 fxdr_unsigned(u_char, fp->fa3_rdev.specdata2)); 1194 fxdr_nfsv3time(&fp->fa3_mtime, &mtime); 1195 } else { 1196 vtyp = nfsv2tov_type(fp->fa_type); 1197 vmode = fxdr_unsigned(u_short, fp->fa_mode); 1198 /* 1199 * XXX 1200 * 1201 * The duplicate information returned in fa_type and fa_mode 1202 * is an ambiguity in the NFS version 2 protocol. 1203 * 1204 * VREG should be taken literally as a regular file. If a 1205 * server intents to return some type information differently 1206 * in the upper bits of the mode field (e.g. for sockets, or 1207 * FIFOs), NFSv2 mandates fa_type to be VNON. Anyway, we 1208 * leave the examination of the mode bits even in the VREG 1209 * case to avoid breakage for bogus servers, but we make sure 1210 * that there are actually type bits set in the upper part of 1211 * fa_mode (and failing that, trust the va_type field). 1212 * 1213 * NFSv3 cleared the issue, and requires fa_mode to not 1214 * contain any type information (while also introduing sockets 1215 * and FIFOs for fa_type). 1216 */ 1217 if (vtyp == VNON || (vtyp == VREG && (vmode & S_IFMT) != 0)) 1218 vtyp = IFTOVT(vmode); 1219 rdev = fxdr_unsigned(long, fp->fa2_rdev); 1220 fxdr_nfsv2time(&fp->fa2_mtime, &mtime); 1221 1222 /* 1223 * Really ugly NFSv2 kludge. 1224 */ 1225 if (vtyp == VCHR && rdev == 0xffffffff) 1226 vtyp = VFIFO; 1227 } 1228 1229 /* 1230 * If v_type == VNON it is a new node, so fill in the v_type, 1231 * n_mtime fields. Check to see if it represents a special 1232 * device, and if so, check for a possible alias. Once the 1233 * correct vnode has been obtained, fill in the rest of the 1234 * information. 1235 */ 1236 np = VTONFS(vp); 1237 if (vp->v_type == VNON) { 1238 /* 1239 * If we had a lock and it turns out that the vnode 1240 * is an object which we don't want to lock (e.g. VDIR) 1241 * to avoid nasty hanging problems on a server crash, 1242 * then release it here. 1243 */ 1244 if (vtyp != VREG && VOP_ISLOCKED(vp)) 1245 VOP_UNLOCK(vp); 1246 vp->v_type = vtyp; 1247 if (vp->v_type == VFIFO) { 1248 vp->v_op = fifo_nfsv2nodeop_p; 1249 } 1250 if (vp->v_type == VCHR || vp->v_type == VBLK) { 1251 vp->v_op = spec_nfsv2nodeop_p; 1252 nvp = checkalias(vp, (dev_t)rdev, vp->v_mount); 1253 if (nvp) { 1254 /* 1255 * Discard unneeded vnode, but save its nfsnode. 1256 */ 1257 LIST_REMOVE(np, n_hash); 1258 nvp->v_data = vp->v_data; 1259 vp->v_data = NULL; 1260 vp->v_op = spec_vnodeop_p; 1261 vrele(vp); 1262 vgone(vp); 1263 /* 1264 * Reinitialize aliased node. 1265 */ 1266 np->n_vnode = nvp; 1267 nhpp = NFSNOHASH(nfs_hash(np->n_fhp, np->n_fhsize)); 1268 LIST_INSERT_HEAD(nhpp, np, n_hash); 1269 *vpp = vp = nvp; 1270 } 1271 } 1272 np->n_mtime = mtime.ts_sec; 1273 } 1274 vap = &np->n_vattr; 1275 vap->va_type = vtyp; 1276 vap->va_mode = (vmode & 07777); 1277 vap->va_rdev = (dev_t)rdev; 1278 vap->va_mtime = mtime; 1279 vap->va_fsid = vp->v_mount->mnt_stat.f_fsid.val[0]; 1280 if (v3) { 1281 vap->va_nlink = fxdr_unsigned(u_short, fp->fa_nlink); 1282 vap->va_uid = fxdr_unsigned(uid_t, fp->fa_uid); 1283 vap->va_gid = fxdr_unsigned(gid_t, fp->fa_gid); 1284 fxdr_hyper(&fp->fa3_size, &vap->va_size); 1285 vap->va_blocksize = NFS_FABLKSIZE; 1286 fxdr_hyper(&fp->fa3_used, &vap->va_bytes); 1287 vap->va_fileid = fxdr_unsigned(int, fp->fa3_fileid.nfsuquad[1]); 1288 fxdr_nfsv3time(&fp->fa3_atime, &vap->va_atime); 1289 fxdr_nfsv3time(&fp->fa3_ctime, &vap->va_ctime); 1290 vap->va_flags = 0; 1291 vap->va_filerev = 0; 1292 } else { 1293 vap->va_nlink = fxdr_unsigned(u_short, fp->fa_nlink); 1294 vap->va_uid = fxdr_unsigned(uid_t, fp->fa_uid); 1295 vap->va_gid = fxdr_unsigned(gid_t, fp->fa_gid); 1296 vap->va_size = fxdr_unsigned(u_long, fp->fa2_size); 1297 vap->va_blocksize = fxdr_unsigned(long, fp->fa2_blocksize); 1298 vap->va_bytes = fxdr_unsigned(long, fp->fa2_blocks) * NFS_FABLKSIZE; 1299 vap->va_fileid = fxdr_unsigned(long, fp->fa2_fileid); 1300 fxdr_nfsv2time(&fp->fa2_atime, &vap->va_atime); 1301 vap->va_flags = 0; 1302 vap->va_ctime.ts_sec = fxdr_unsigned(long, fp->fa2_ctime.nfsv2_sec); 1303 vap->va_ctime.ts_nsec = 0; 1304 vap->va_gen = fxdr_unsigned(u_long, fp->fa2_ctime.nfsv2_usec); 1305 vap->va_filerev = 0; 1306 } 1307 if (vap->va_size != np->n_size) { 1308 if (vap->va_type == VREG) { 1309 if (np->n_flag & NMODIFIED) { 1310 if (vap->va_size < np->n_size) 1311 vap->va_size = np->n_size; 1312 else 1313 np->n_size = vap->va_size; 1314 } else 1315 np->n_size = vap->va_size; 1316 vnode_pager_setsize(vp, (u_long)np->n_size); 1317 } else 1318 np->n_size = vap->va_size; 1319 } 1320 np->n_attrstamp = time.tv_sec; 1321 if (vaper != NULL) { 1322 bcopy((caddr_t)vap, (caddr_t)vaper, sizeof(*vap)); 1323 if (np->n_flag & NCHG) { 1324 if (np->n_flag & NACC) 1325 vaper->va_atime = np->n_atim; 1326 if (np->n_flag & NUPD) 1327 vaper->va_mtime = np->n_mtim; 1328 } 1329 } 1330 return (0); 1331} 1332 1333/* 1334 * Check the time stamp 1335 * If the cache is valid, copy contents to *vap and return 0 1336 * otherwise return an error 1337 */ 1338int 1339nfs_getattrcache(vp, vaper) 1340 register struct vnode *vp; 1341 struct vattr *vaper; 1342{ 1343 register struct nfsnode *np = VTONFS(vp); 1344 register struct vattr *vap; 1345 1346 if ((time.tv_sec - np->n_attrstamp) >= NFS_ATTRTIMEO(np)) { 1347 nfsstats.attrcache_misses++; 1348 return (ENOENT); 1349 } 1350 nfsstats.attrcache_hits++; 1351 vap = &np->n_vattr; 1352 if (vap->va_size != np->n_size) { 1353 if (vap->va_type == VREG) { 1354 if (np->n_flag & NMODIFIED) { 1355 if (vap->va_size < np->n_size) 1356 vap->va_size = np->n_size; 1357 else 1358 np->n_size = vap->va_size; 1359 } else 1360 np->n_size = vap->va_size; 1361 vnode_pager_setsize(vp, (u_long)np->n_size); 1362 } else 1363 np->n_size = vap->va_size; 1364 } 1365 bcopy((caddr_t)vap, (caddr_t)vaper, sizeof(struct vattr)); 1366 if (np->n_flag & NCHG) { 1367 if (np->n_flag & NACC) 1368 vaper->va_atime = np->n_atim; 1369 if (np->n_flag & NUPD) 1370 vaper->va_mtime = np->n_mtim; 1371 } 1372 return (0); 1373} 1374 1375/* 1376 * Set up nameidata for a lookup() call and do it 1377 */ 1378int 1379nfs_namei(ndp, fhp, len, slp, nam, mdp, dposp, retdirp, p, kerbflag) 1380 register struct nameidata *ndp; 1381 fhandle_t *fhp; 1382 int len; 1383 struct nfssvc_sock *slp; 1384 struct mbuf *nam; 1385 struct mbuf **mdp; 1386 caddr_t *dposp; 1387 struct vnode **retdirp; 1388 struct proc *p; 1389 int kerbflag; 1390{ 1391 register int i, rem; 1392 register struct mbuf *md; 1393 register char *fromcp, *tocp; 1394 struct vnode *dp; 1395 int error, rdonly; 1396 struct componentname *cnp = &ndp->ni_cnd; 1397 1398 *retdirp = (struct vnode *)0; 1399 MALLOC(cnp->cn_pnbuf, char *, len + 1, M_NAMEI, M_WAITOK); 1400 /* 1401 * Copy the name from the mbuf list to ndp->ni_pnbuf 1402 * and set the various ndp fields appropriately. 1403 */ 1404 fromcp = *dposp; 1405 tocp = cnp->cn_pnbuf; 1406 md = *mdp; 1407 rem = mtod(md, caddr_t) + md->m_len - fromcp; 1408 cnp->cn_hash = 0; 1409 for (i = 0; i < len; i++) { 1410 while (rem == 0) { 1411 md = md->m_next; 1412 if (md == NULL) { 1413 error = EBADRPC; 1414 goto out; 1415 } 1416 fromcp = mtod(md, caddr_t); 1417 rem = md->m_len; 1418 } 1419 if (*fromcp == '\0' || *fromcp == '/') { 1420 error = EACCES; 1421 goto out; 1422 } 1423 cnp->cn_hash += (unsigned char)*fromcp; 1424 *tocp++ = *fromcp++; 1425 rem--; 1426 } 1427 *tocp = '\0'; 1428 *mdp = md; 1429 *dposp = fromcp; 1430 len = nfsm_rndup(len)-len; 1431 if (len > 0) { 1432 if (rem >= len) 1433 *dposp += len; 1434 else if (error = nfs_adv(mdp, dposp, len, rem)) 1435 goto out; 1436 } 1437 ndp->ni_pathlen = tocp - cnp->cn_pnbuf; 1438 cnp->cn_nameptr = cnp->cn_pnbuf; 1439 /* 1440 * Extract and set starting directory. 1441 */ 1442 if (error = nfsrv_fhtovp(fhp, FALSE, &dp, ndp->ni_cnd.cn_cred, slp, 1443 nam, &rdonly, kerbflag)) 1444 goto out; 1445 if (dp->v_type != VDIR) { 1446 nfsrv_vrele(dp); 1447 error = ENOTDIR; 1448 goto out; 1449 } 1450 VREF(dp); 1451 *retdirp = dp; 1452 ndp->ni_startdir = dp; 1453 if (rdonly) 1454 cnp->cn_flags |= (NOCROSSMOUNT | RDONLY); 1455 else 1456 cnp->cn_flags |= NOCROSSMOUNT; 1457 /* 1458 * And call lookup() to do the real work 1459 */ 1460 cnp->cn_proc = p; 1461 if (error = lookup(ndp)) 1462 goto out; 1463 /* 1464 * Check for encountering a symbolic link 1465 */ 1466 if (cnp->cn_flags & ISSYMLINK) { 1467 if ((cnp->cn_flags & LOCKPARENT) && ndp->ni_pathlen == 1) 1468 vput(ndp->ni_dvp); 1469 else 1470 vrele(ndp->ni_dvp); 1471 vput(ndp->ni_vp); 1472 ndp->ni_vp = NULL; 1473 error = EINVAL; 1474 goto out; 1475 } 1476 1477 nfsrv_vmio(ndp->ni_vp); 1478 1479 /* 1480 * Check for saved name request 1481 */ 1482 if (cnp->cn_flags & (SAVENAME | SAVESTART)) { 1483 cnp->cn_flags |= HASBUF; 1484 return (0); 1485 } 1486out: 1487 FREE(cnp->cn_pnbuf, M_NAMEI); 1488 return (error); 1489} 1490 1491/* 1492 * A fiddled version of m_adj() that ensures null fill to a long 1493 * boundary and only trims off the back end 1494 */ 1495void 1496nfsm_adj(mp, len, nul) 1497 struct mbuf *mp; 1498 register int len; 1499 int nul; 1500{ 1501 register struct mbuf *m; 1502 register int count, i; 1503 register char *cp; 1504 1505 /* 1506 * Trim from tail. Scan the mbuf chain, 1507 * calculating its length and finding the last mbuf. 1508 * If the adjustment only affects this mbuf, then just 1509 * adjust and return. Otherwise, rescan and truncate 1510 * after the remaining size. 1511 */ 1512 count = 0; 1513 m = mp; 1514 for (;;) { 1515 count += m->m_len; 1516 if (m->m_next == (struct mbuf *)0) 1517 break; 1518 m = m->m_next; 1519 } 1520 if (m->m_len > len) { 1521 m->m_len -= len; 1522 if (nul > 0) { 1523 cp = mtod(m, caddr_t)+m->m_len-nul; 1524 for (i = 0; i < nul; i++) 1525 *cp++ = '\0'; 1526 } 1527 return; 1528 } 1529 count -= len; 1530 if (count < 0) 1531 count = 0; 1532 /* 1533 * Correct length for chain is "count". 1534 * Find the mbuf with last data, adjust its length, 1535 * and toss data from remaining mbufs on chain. 1536 */ 1537 for (m = mp; m; m = m->m_next) { 1538 if (m->m_len >= count) { 1539 m->m_len = count; 1540 if (nul > 0) { 1541 cp = mtod(m, caddr_t)+m->m_len-nul; 1542 for (i = 0; i < nul; i++) 1543 *cp++ = '\0'; 1544 } 1545 break; 1546 } 1547 count -= m->m_len; 1548 } 1549 for (m = m->m_next;m;m = m->m_next) 1550 m->m_len = 0; 1551} 1552 1553/* 1554 * Make these functions instead of macros, so that the kernel text size 1555 * doesn't get too big... 1556 */ 1557void 1558nfsm_srvwcc(nfsd, before_ret, before_vap, after_ret, after_vap, mbp, bposp) 1559 struct nfsrv_descript *nfsd; 1560 int before_ret; 1561 register struct vattr *before_vap; 1562 int after_ret; 1563 struct vattr *after_vap; 1564 struct mbuf **mbp; 1565 char **bposp; 1566{ 1567 register struct mbuf *mb = *mbp, *mb2; 1568 register char *bpos = *bposp; 1569 register u_long *tl; 1570 1571 if (before_ret) { 1572 nfsm_build(tl, u_long *, NFSX_UNSIGNED); 1573 *tl = nfs_false; 1574 } else { 1575 nfsm_build(tl, u_long *, 7 * NFSX_UNSIGNED); 1576 *tl++ = nfs_true; 1577 txdr_hyper(&(before_vap->va_size), tl); 1578 tl += 2; 1579 txdr_nfsv3time(&(before_vap->va_mtime), tl); 1580 tl += 2; 1581 txdr_nfsv3time(&(before_vap->va_ctime), tl); 1582 } 1583 *bposp = bpos; 1584 *mbp = mb; 1585 nfsm_srvpostopattr(nfsd, after_ret, after_vap, mbp, bposp); 1586} 1587 1588void 1589nfsm_srvpostopattr(nfsd, after_ret, after_vap, mbp, bposp) 1590 struct nfsrv_descript *nfsd; 1591 int after_ret; 1592 struct vattr *after_vap; 1593 struct mbuf **mbp; 1594 char **bposp; 1595{ 1596 register struct mbuf *mb = *mbp, *mb2; 1597 register char *bpos = *bposp; 1598 register u_long *tl; 1599 register struct nfs_fattr *fp; 1600 1601 if (after_ret) { 1602 nfsm_build(tl, u_long *, NFSX_UNSIGNED); 1603 *tl = nfs_false; 1604 } else { 1605 nfsm_build(tl, u_long *, NFSX_UNSIGNED + NFSX_V3FATTR); 1606 *tl++ = nfs_true; 1607 fp = (struct nfs_fattr *)tl; 1608 nfsm_srvfattr(nfsd, after_vap, fp); 1609 } 1610 *mbp = mb; 1611 *bposp = bpos; 1612} 1613 1614void 1615nfsm_srvfattr(nfsd, vap, fp) 1616 register struct nfsrv_descript *nfsd; 1617 register struct vattr *vap; 1618 register struct nfs_fattr *fp; 1619{ 1620 1621 fp->fa_nlink = txdr_unsigned(vap->va_nlink); 1622 fp->fa_uid = txdr_unsigned(vap->va_uid); 1623 fp->fa_gid = txdr_unsigned(vap->va_gid); 1624 if (nfsd->nd_flag & ND_NFSV3) { 1625 fp->fa_type = vtonfsv3_type(vap->va_type); 1626 fp->fa_mode = vtonfsv3_mode(vap->va_mode); 1627 txdr_hyper(&vap->va_size, &fp->fa3_size); 1628 txdr_hyper(&vap->va_bytes, &fp->fa3_used); 1629 fp->fa3_rdev.specdata1 = txdr_unsigned(major(vap->va_rdev)); 1630 fp->fa3_rdev.specdata2 = txdr_unsigned(minor(vap->va_rdev)); 1631 fp->fa3_fsid.nfsuquad[0] = 0; 1632 fp->fa3_fsid.nfsuquad[1] = txdr_unsigned(vap->va_fsid); 1633 fp->fa3_fileid.nfsuquad[0] = 0; 1634 fp->fa3_fileid.nfsuquad[1] = txdr_unsigned(vap->va_fileid); 1635 txdr_nfsv3time(&vap->va_atime, &fp->fa3_atime); 1636 txdr_nfsv3time(&vap->va_mtime, &fp->fa3_mtime); 1637 txdr_nfsv3time(&vap->va_ctime, &fp->fa3_ctime); 1638 } else { 1639 fp->fa_type = vtonfsv2_type(vap->va_type); 1640 fp->fa_mode = vtonfsv2_mode(vap->va_type, vap->va_mode); 1641 fp->fa2_size = txdr_unsigned(vap->va_size); 1642 fp->fa2_blocksize = txdr_unsigned(vap->va_blocksize); 1643 if (vap->va_type == VFIFO) 1644 fp->fa2_rdev = 0xffffffff; 1645 else 1646 fp->fa2_rdev = txdr_unsigned(vap->va_rdev); 1647 fp->fa2_blocks = txdr_unsigned(vap->va_bytes / NFS_FABLKSIZE); 1648 fp->fa2_fsid = txdr_unsigned(vap->va_fsid); 1649 fp->fa2_fileid = txdr_unsigned(vap->va_fileid); 1650 txdr_nfsv2time(&vap->va_atime, &fp->fa2_atime); 1651 txdr_nfsv2time(&vap->va_mtime, &fp->fa2_mtime); 1652 txdr_nfsv2time(&vap->va_ctime, &fp->fa2_ctime); 1653 } 1654} 1655 1656/* 1657 * nfsrv_fhtovp() - convert a fh to a vnode ptr (optionally locked) 1658 * - look up fsid in mount list (if not found ret error) 1659 * - get vp and export rights by calling VFS_FHTOVP() 1660 * - if cred->cr_uid == 0 or MNT_EXPORTANON set it to credanon 1661 * - if not lockflag unlock it with VOP_UNLOCK() 1662 */ 1663int 1664nfsrv_fhtovp(fhp, lockflag, vpp, cred, slp, nam, rdonlyp, kerbflag) 1665 fhandle_t *fhp; 1666 int lockflag; 1667 struct vnode **vpp; 1668 struct ucred *cred; 1669 struct nfssvc_sock *slp; 1670 struct mbuf *nam; 1671 int *rdonlyp; 1672 int kerbflag; 1673{ 1674 register struct mount *mp; 1675 register struct nfsuid *uidp; 1676 register int i; 1677 struct ucred *credanon; 1678 int error, exflags; 1679 1680 *vpp = (struct vnode *)0; 1681 mp = getvfs(&fhp->fh_fsid); 1682 if (!mp) 1683 return (ESTALE); 1684 error = VFS_FHTOVP(mp, &fhp->fh_fid, nam, vpp, &exflags, &credanon); 1685 if (error) 1686 return (error); 1687 /* 1688 * Check/setup credentials. 1689 */ 1690 if (exflags & MNT_EXKERB) { 1691 if (!kerbflag) { 1692 vput(*vpp); 1693 return (NFSERR_AUTHERR | AUTH_TOOWEAK); 1694 } 1695 } else if (kerbflag) { 1696 vput(*vpp); 1697 return (NFSERR_AUTHERR | AUTH_TOOWEAK); 1698 } else if (cred->cr_uid == 0 || (exflags & MNT_EXPORTANON)) { 1699 cred->cr_uid = credanon->cr_uid; 1700 for (i = 0; i < credanon->cr_ngroups && i < NGROUPS; i++) 1701 cred->cr_groups[i] = credanon->cr_groups[i]; 1702 cred->cr_ngroups = i; 1703 } 1704 if (exflags & MNT_EXRDONLY) 1705 *rdonlyp = 1; 1706 else 1707 *rdonlyp = 0; 1708 1709 nfsrv_vmio(*vpp); 1710 1711 if (!lockflag) 1712 VOP_UNLOCK(*vpp); 1713 return (0); 1714} 1715 1716/* 1717 * This function compares two net addresses by family and returns TRUE 1718 * if they are the same host. 1719 * If there is any doubt, return FALSE. 1720 * The AF_INET family is handled as a special case so that address mbufs 1721 * don't need to be saved to store "struct in_addr", which is only 4 bytes. 1722 */ 1723int 1724netaddr_match(family, haddr, nam) 1725 int family; 1726 union nethostaddr *haddr; 1727 struct mbuf *nam; 1728{ 1729 register struct sockaddr_in *inetaddr; 1730 1731 switch (family) { 1732 case AF_INET: 1733 inetaddr = mtod(nam, struct sockaddr_in *); 1734 if (inetaddr->sin_family == AF_INET && 1735 inetaddr->sin_addr.s_addr == haddr->had_inetaddr) 1736 return (1); 1737 break; 1738#ifdef ISO 1739 case AF_ISO: 1740 { 1741 register struct sockaddr_iso *isoaddr1, *isoaddr2; 1742 1743 isoaddr1 = mtod(nam, struct sockaddr_iso *); 1744 isoaddr2 = mtod(haddr->had_nam, struct sockaddr_iso *); 1745 if (isoaddr1->siso_family == AF_ISO && 1746 isoaddr1->siso_nlen > 0 && 1747 isoaddr1->siso_nlen == isoaddr2->siso_nlen && 1748 SAME_ISOADDR(isoaddr1, isoaddr2)) 1749 return (1); 1750 break; 1751 } 1752#endif /* ISO */ 1753 default: 1754 break; 1755 }; 1756 return (0); 1757} 1758 1759static nfsuint64 nfs_nullcookie = { 0, 0 }; 1760/* 1761 * This function finds the directory cookie that corresponds to the 1762 * logical byte offset given. 1763 */ 1764nfsuint64 * 1765nfs_getcookie(np, off, add) 1766 register struct nfsnode *np; 1767 off_t off; 1768 int add; 1769{ 1770 register struct nfsdmap *dp, *dp2; 1771 register int pos; 1772 1773 pos = off / NFS_DIRBLKSIZ; 1774 if (pos == 0) { 1775#ifdef DIAGNOSTIC 1776 if (add) 1777 panic("nfs getcookie add at 0"); 1778#endif 1779 return (&nfs_nullcookie); 1780 } 1781 pos--; 1782 dp = np->n_cookies.lh_first; 1783 if (!dp) { 1784 if (add) { 1785 MALLOC(dp, struct nfsdmap *, sizeof (struct nfsdmap), 1786 M_NFSDIROFF, M_WAITOK); 1787 dp->ndm_eocookie = 0; 1788 LIST_INSERT_HEAD(&np->n_cookies, dp, ndm_list); 1789 } else 1790 return ((nfsuint64 *)0); 1791 } 1792 while (pos >= NFSNUMCOOKIES) { 1793 pos -= NFSNUMCOOKIES; 1794 if (dp->ndm_list.le_next) { 1795 if (!add && dp->ndm_eocookie < NFSNUMCOOKIES && 1796 pos >= dp->ndm_eocookie) 1797 return ((nfsuint64 *)0); 1798 dp = dp->ndm_list.le_next; 1799 } else if (add) { 1800 MALLOC(dp2, struct nfsdmap *, sizeof (struct nfsdmap), 1801 M_NFSDIROFF, M_WAITOK); 1802 dp2->ndm_eocookie = 0; 1803 LIST_INSERT_AFTER(dp, dp2, ndm_list); 1804 dp = dp2; 1805 } else 1806 return ((nfsuint64 *)0); 1807 } 1808 if (pos >= dp->ndm_eocookie) { 1809 if (add) 1810 dp->ndm_eocookie = pos + 1; 1811 else 1812 return ((nfsuint64 *)0); 1813 } 1814 return (&dp->ndm_cookies[pos]); 1815} 1816 1817/* 1818 * Invalidate cached directory information, except for the actual directory 1819 * blocks (which are invalidated separately). 1820 * Done mainly to avoid the use of stale offset cookies. 1821 */ 1822void 1823nfs_invaldir(vp) 1824 register struct vnode *vp; 1825{ 1826 register struct nfsnode *np = VTONFS(vp); 1827 1828#ifdef DIAGNOSTIC 1829 if (vp->v_type != VDIR) 1830 panic("nfs: invaldir not dir"); 1831#endif 1832 np->n_direofoffset = 0; 1833 np->n_cookieverf.nfsuquad[0] = 0; 1834 np->n_cookieverf.nfsuquad[1] = 0; 1835 if (np->n_cookies.lh_first) 1836 np->n_cookies.lh_first->ndm_eocookie = 0; 1837} 1838 1839/* 1840 * The write verifier has changed (probably due to a server reboot), so all 1841 * B_NEEDCOMMIT blocks will have to be written again. Since they are on the 1842 * dirty block list as B_DELWRI, all this takes is clearing the B_NEEDCOMMIT 1843 * flag. Once done the new write verifier can be set for the mount point. 1844 */ 1845void 1846nfs_clearcommit(mp) 1847 struct mount *mp; 1848{ 1849 register struct vnode *vp, *nvp; 1850 register struct buf *bp, *nbp; 1851 int s; 1852 1853 s = splbio(); 1854loop: 1855 for (vp = mp->mnt_vnodelist.lh_first; vp; vp = nvp) { 1856 if (vp->v_mount != mp) /* Paranoia */ 1857 goto loop; 1858 nvp = vp->v_mntvnodes.le_next; 1859 for (bp = vp->v_dirtyblkhd.lh_first; bp; bp = nbp) { 1860 nbp = bp->b_vnbufs.le_next; 1861 if ((bp->b_flags & (B_BUSY | B_DELWRI | B_NEEDCOMMIT)) 1862 == (B_DELWRI | B_NEEDCOMMIT)) 1863 bp->b_flags &= ~B_NEEDCOMMIT; 1864 } 1865 } 1866 splx(s); 1867} 1868 1869/* 1870 * Map errnos to NFS error numbers. For Version 3 also filter out error 1871 * numbers not specified for the associated procedure. 1872 */ 1873int 1874nfsrv_errmap(nd, err) 1875 struct nfsrv_descript *nd; 1876 register int err; 1877{ 1878 register short *defaulterrp, *errp; 1879 1880 if (nd->nd_flag & ND_NFSV3) { 1881 if (nd->nd_procnum <= NFSPROC_COMMIT) { 1882 errp = defaulterrp = nfsrv_v3errmap[nd->nd_procnum]; 1883 while (*++errp) { 1884 if (*errp == err) 1885 return (err); 1886 else if (*errp > err) 1887 break; 1888 } 1889 return ((int)*defaulterrp); 1890 } else 1891 return (err & 0xffff); 1892 } 1893 if (err <= ELAST) 1894 return ((int)nfsrv_v2errmap[err - 1]); 1895 return (NFSERR_IO); 1896} 1897 1898int 1899nfsrv_vmio( struct vnode *vp) { 1900 vm_object_t object; 1901 vm_pager_t pager; 1902 1903 if( (vp == NULL) || (vp->v_type != VREG)) 1904 return 1; 1905 1906retry: 1907 if( (vp->v_flag & VVMIO) == 0) { 1908 pager = (vm_pager_t) vnode_pager_alloc((caddr_t) vp, 0, 0, 0); 1909 object = (vm_object_t) vp->v_vmdata; 1910 if( object->pager != pager) 1911 panic("nfsrv_vmio: pager/object mismatch"); 1912 (void) vm_object_lookup( pager); 1913 pager_cache( object, TRUE); 1914 vp->v_flag |= VVMIO; 1915 } else { 1916 if( (object = (vm_object_t)vp->v_vmdata) && 1917 (object->flags & OBJ_DEAD)) { 1918 tsleep( (caddr_t) object, PVM, "nfdead", 0); 1919 goto retry; 1920 } 1921 if( !object) 1922 panic("nfsrv_vmio: VMIO object missing"); 1923 pager = object->pager; 1924 if( !pager) 1925 panic("nfsrv_vmio: VMIO pager missing"); 1926 (void) vm_object_lookup( pager); 1927 } 1928 return 0; 1929} 1930int 1931nfsrv_vput( struct vnode *vp) { 1932 if( (vp->v_flag & VVMIO) && vp->v_vmdata) { 1933 vput( vp); 1934 vm_object_deallocate( (vm_object_t) vp->v_vmdata); 1935 } else { 1936 vput( vp); 1937 } 1938 return 0; 1939} 1940int 1941nfsrv_vrele( struct vnode *vp) { 1942 if( (vp->v_flag & VVMIO) && vp->v_vmdata) { 1943 vrele( vp); 1944 vm_object_deallocate( (vm_object_t) vp->v_vmdata); 1945 } else { 1946 vrele( vp); 1947 } 1948 return 0; 1949} 1950