nfs_subs.c revision 10219
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 1.22 1995/07/29 11:42:22 bde 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#include <vm/vnode_pager.h> 63 64#include <nfs/rpcv2.h> 65#include <nfs/nfsproto.h> 66#include <nfs/nfsnode.h> 67#include <nfs/nfs.h> 68#include <nfs/xdr_subs.h> 69#include <nfs/nfsm_subs.h> 70#include <nfs/nfsmount.h> 71#include <nfs/nqnfs.h> 72#include <nfs/nfsrtt.h> 73 74#include <miscfs/specfs/specdev.h> 75 76#include <netinet/in.h> 77#ifdef ISO 78#include <netiso/iso.h> 79#endif 80 81/* 82 * Data items converted to xdr at startup, since they are constant 83 * This is kinda hokey, but may save a little time doing byte swaps 84 */ 85u_long nfs_xdrneg1; 86u_long rpc_call, rpc_vers, rpc_reply, rpc_msgdenied, rpc_autherr, 87 rpc_mismatch, rpc_auth_unix, rpc_msgaccepted, 88 rpc_auth_kerb; 89u_long nfs_prog, nqnfs_prog, nfs_true, nfs_false; 90 91/* And other global data */ 92static u_long nfs_xid = 0; 93enum vtype nv2tov_type[8] = { VNON, VREG, VDIR, VBLK, VCHR, VLNK, VNON, VNON }; 94enum vtype nv3tov_type[8]={ VNON, VREG, VDIR, VBLK, VCHR, VLNK, VSOCK, VFIFO }; 95int nfs_ticks; 96 97struct nfs_reqq nfs_reqq; 98struct nfssvc_sockhead nfssvc_sockhead; 99int nfssvc_sockhead_flag; 100struct nfsd_head nfsd_head; 101int nfsd_head_flag; 102struct nfs_bufq nfs_bufq; 103struct nqtimerhead nqtimerhead; 104struct nqfhhashhead *nqfhhashtbl; 105u_long nqfhhash; 106 107/* 108 * Mapping of old NFS Version 2 RPC numbers to generic numbers. 109 */ 110int nfsv3_procid[NFS_NPROCS] = { 111 NFSPROC_NULL, 112 NFSPROC_GETATTR, 113 NFSPROC_SETATTR, 114 NFSPROC_NOOP, 115 NFSPROC_LOOKUP, 116 NFSPROC_READLINK, 117 NFSPROC_READ, 118 NFSPROC_NOOP, 119 NFSPROC_WRITE, 120 NFSPROC_CREATE, 121 NFSPROC_REMOVE, 122 NFSPROC_RENAME, 123 NFSPROC_LINK, 124 NFSPROC_SYMLINK, 125 NFSPROC_MKDIR, 126 NFSPROC_RMDIR, 127 NFSPROC_READDIR, 128 NFSPROC_FSSTAT, 129 NFSPROC_NOOP, 130 NFSPROC_NOOP, 131 NFSPROC_NOOP, 132 NFSPROC_NOOP, 133 NFSPROC_NOOP, 134 NFSPROC_NOOP, 135 NFSPROC_NOOP, 136 NFSPROC_NOOP 137}; 138 139/* 140 * and the reverse mapping from generic to Version 2 procedure numbers 141 */ 142int nfsv2_procid[NFS_NPROCS] = { 143 NFSV2PROC_NULL, 144 NFSV2PROC_GETATTR, 145 NFSV2PROC_SETATTR, 146 NFSV2PROC_LOOKUP, 147 NFSV2PROC_NOOP, 148 NFSV2PROC_READLINK, 149 NFSV2PROC_READ, 150 NFSV2PROC_WRITE, 151 NFSV2PROC_CREATE, 152 NFSV2PROC_MKDIR, 153 NFSV2PROC_SYMLINK, 154 NFSV2PROC_CREATE, 155 NFSV2PROC_REMOVE, 156 NFSV2PROC_RMDIR, 157 NFSV2PROC_RENAME, 158 NFSV2PROC_LINK, 159 NFSV2PROC_READDIR, 160 NFSV2PROC_NOOP, 161 NFSV2PROC_STATFS, 162 NFSV2PROC_NOOP, 163 NFSV2PROC_NOOP, 164 NFSV2PROC_NOOP, 165 NFSV2PROC_NOOP, 166 NFSV2PROC_NOOP, 167 NFSV2PROC_NOOP, 168 NFSV2PROC_NOOP, 169}; 170 171/* 172 * Maps errno values to nfs error numbers. 173 * Use NFSERR_IO as the catch all for ones not specifically defined in 174 * RFC 1094. 175 */ 176static u_char nfsrv_v2errmap[ELAST] = { 177 NFSERR_PERM, NFSERR_NOENT, NFSERR_IO, NFSERR_IO, NFSERR_IO, 178 NFSERR_NXIO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 179 NFSERR_IO, NFSERR_IO, NFSERR_ACCES, NFSERR_IO, NFSERR_IO, 180 NFSERR_IO, NFSERR_EXIST, NFSERR_IO, NFSERR_NODEV, NFSERR_NOTDIR, 181 NFSERR_ISDIR, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 182 NFSERR_IO, NFSERR_FBIG, NFSERR_NOSPC, NFSERR_IO, NFSERR_ROFS, 183 NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 184 NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 185 NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 186 NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 187 NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 188 NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 189 NFSERR_IO, NFSERR_IO, NFSERR_NAMETOL, NFSERR_IO, NFSERR_IO, 190 NFSERR_NOTEMPTY, NFSERR_IO, NFSERR_IO, NFSERR_DQUOT, NFSERR_STALE, 191 NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 192 NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 193 NFSERR_IO, 194}; 195 196/* 197 * Maps errno values to nfs error numbers. 198 * Although it is not obvious whether or not NFS clients really care if 199 * a returned error value is in the specified list for the procedure, the 200 * safest thing to do is filter them appropriately. For Version 2, the 201 * X/Open XNFS document is the only specification that defines error values 202 * for each RPC (The RFC simply lists all possible error values for all RPCs), 203 * so I have decided to not do this for Version 2. 204 * The first entry is the default error return and the rest are the valid 205 * errors for that RPC in increasing numeric order. 206 */ 207static short nfsv3err_null[] = { 208 0, 209 0, 210}; 211 212static short nfsv3err_getattr[] = { 213 NFSERR_IO, 214 NFSERR_IO, 215 NFSERR_STALE, 216 NFSERR_BADHANDLE, 217 NFSERR_SERVERFAULT, 218 0, 219}; 220 221static short nfsv3err_setattr[] = { 222 NFSERR_IO, 223 NFSERR_PERM, 224 NFSERR_IO, 225 NFSERR_ACCES, 226 NFSERR_INVAL, 227 NFSERR_NOSPC, 228 NFSERR_ROFS, 229 NFSERR_DQUOT, 230 NFSERR_STALE, 231 NFSERR_BADHANDLE, 232 NFSERR_NOT_SYNC, 233 NFSERR_SERVERFAULT, 234 0, 235}; 236 237static short nfsv3err_lookup[] = { 238 NFSERR_IO, 239 NFSERR_NOENT, 240 NFSERR_IO, 241 NFSERR_ACCES, 242 NFSERR_NOTDIR, 243 NFSERR_NAMETOL, 244 NFSERR_STALE, 245 NFSERR_BADHANDLE, 246 NFSERR_SERVERFAULT, 247 0, 248}; 249 250static short nfsv3err_access[] = { 251 NFSERR_IO, 252 NFSERR_IO, 253 NFSERR_STALE, 254 NFSERR_BADHANDLE, 255 NFSERR_SERVERFAULT, 256 0, 257}; 258 259static short nfsv3err_readlink[] = { 260 NFSERR_IO, 261 NFSERR_IO, 262 NFSERR_ACCES, 263 NFSERR_INVAL, 264 NFSERR_STALE, 265 NFSERR_BADHANDLE, 266 NFSERR_NOTSUPP, 267 NFSERR_SERVERFAULT, 268 0, 269}; 270 271static short nfsv3err_read[] = { 272 NFSERR_IO, 273 NFSERR_IO, 274 NFSERR_NXIO, 275 NFSERR_ACCES, 276 NFSERR_INVAL, 277 NFSERR_STALE, 278 NFSERR_BADHANDLE, 279 NFSERR_SERVERFAULT, 280 0, 281}; 282 283static short nfsv3err_write[] = { 284 NFSERR_IO, 285 NFSERR_IO, 286 NFSERR_ACCES, 287 NFSERR_INVAL, 288 NFSERR_FBIG, 289 NFSERR_NOSPC, 290 NFSERR_ROFS, 291 NFSERR_DQUOT, 292 NFSERR_STALE, 293 NFSERR_BADHANDLE, 294 NFSERR_SERVERFAULT, 295 0, 296}; 297 298static short nfsv3err_create[] = { 299 NFSERR_IO, 300 NFSERR_IO, 301 NFSERR_ACCES, 302 NFSERR_EXIST, 303 NFSERR_NOTDIR, 304 NFSERR_NOSPC, 305 NFSERR_ROFS, 306 NFSERR_NAMETOL, 307 NFSERR_DQUOT, 308 NFSERR_STALE, 309 NFSERR_BADHANDLE, 310 NFSERR_NOTSUPP, 311 NFSERR_SERVERFAULT, 312 0, 313}; 314 315static short nfsv3err_mkdir[] = { 316 NFSERR_IO, 317 NFSERR_IO, 318 NFSERR_ACCES, 319 NFSERR_EXIST, 320 NFSERR_NOTDIR, 321 NFSERR_NOSPC, 322 NFSERR_ROFS, 323 NFSERR_NAMETOL, 324 NFSERR_DQUOT, 325 NFSERR_STALE, 326 NFSERR_BADHANDLE, 327 NFSERR_NOTSUPP, 328 NFSERR_SERVERFAULT, 329 0, 330}; 331 332static short nfsv3err_symlink[] = { 333 NFSERR_IO, 334 NFSERR_IO, 335 NFSERR_ACCES, 336 NFSERR_EXIST, 337 NFSERR_NOTDIR, 338 NFSERR_NOSPC, 339 NFSERR_ROFS, 340 NFSERR_NAMETOL, 341 NFSERR_DQUOT, 342 NFSERR_STALE, 343 NFSERR_BADHANDLE, 344 NFSERR_NOTSUPP, 345 NFSERR_SERVERFAULT, 346 0, 347}; 348 349static short nfsv3err_mknod[] = { 350 NFSERR_IO, 351 NFSERR_IO, 352 NFSERR_ACCES, 353 NFSERR_EXIST, 354 NFSERR_NOTDIR, 355 NFSERR_NOSPC, 356 NFSERR_ROFS, 357 NFSERR_NAMETOL, 358 NFSERR_DQUOT, 359 NFSERR_STALE, 360 NFSERR_BADHANDLE, 361 NFSERR_NOTSUPP, 362 NFSERR_SERVERFAULT, 363 NFSERR_BADTYPE, 364 0, 365}; 366 367static short nfsv3err_remove[] = { 368 NFSERR_IO, 369 NFSERR_NOENT, 370 NFSERR_IO, 371 NFSERR_ACCES, 372 NFSERR_NOTDIR, 373 NFSERR_ROFS, 374 NFSERR_NAMETOL, 375 NFSERR_STALE, 376 NFSERR_BADHANDLE, 377 NFSERR_SERVERFAULT, 378 0, 379}; 380 381static short nfsv3err_rmdir[] = { 382 NFSERR_IO, 383 NFSERR_NOENT, 384 NFSERR_IO, 385 NFSERR_ACCES, 386 NFSERR_EXIST, 387 NFSERR_NOTDIR, 388 NFSERR_INVAL, 389 NFSERR_ROFS, 390 NFSERR_NAMETOL, 391 NFSERR_NOTEMPTY, 392 NFSERR_STALE, 393 NFSERR_BADHANDLE, 394 NFSERR_NOTSUPP, 395 NFSERR_SERVERFAULT, 396 0, 397}; 398 399static short nfsv3err_rename[] = { 400 NFSERR_IO, 401 NFSERR_NOENT, 402 NFSERR_IO, 403 NFSERR_ACCES, 404 NFSERR_EXIST, 405 NFSERR_XDEV, 406 NFSERR_NOTDIR, 407 NFSERR_ISDIR, 408 NFSERR_INVAL, 409 NFSERR_NOSPC, 410 NFSERR_ROFS, 411 NFSERR_MLINK, 412 NFSERR_NAMETOL, 413 NFSERR_NOTEMPTY, 414 NFSERR_DQUOT, 415 NFSERR_STALE, 416 NFSERR_BADHANDLE, 417 NFSERR_NOTSUPP, 418 NFSERR_SERVERFAULT, 419 0, 420}; 421 422static short nfsv3err_link[] = { 423 NFSERR_IO, 424 NFSERR_IO, 425 NFSERR_ACCES, 426 NFSERR_EXIST, 427 NFSERR_XDEV, 428 NFSERR_NOTDIR, 429 NFSERR_INVAL, 430 NFSERR_NOSPC, 431 NFSERR_ROFS, 432 NFSERR_MLINK, 433 NFSERR_NAMETOL, 434 NFSERR_DQUOT, 435 NFSERR_STALE, 436 NFSERR_BADHANDLE, 437 NFSERR_NOTSUPP, 438 NFSERR_SERVERFAULT, 439 0, 440}; 441 442static short nfsv3err_readdir[] = { 443 NFSERR_IO, 444 NFSERR_IO, 445 NFSERR_ACCES, 446 NFSERR_NOTDIR, 447 NFSERR_STALE, 448 NFSERR_BADHANDLE, 449 NFSERR_BAD_COOKIE, 450 NFSERR_TOOSMALL, 451 NFSERR_SERVERFAULT, 452 0, 453}; 454 455static short nfsv3err_readdirplus[] = { 456 NFSERR_IO, 457 NFSERR_IO, 458 NFSERR_ACCES, 459 NFSERR_NOTDIR, 460 NFSERR_STALE, 461 NFSERR_BADHANDLE, 462 NFSERR_BAD_COOKIE, 463 NFSERR_NOTSUPP, 464 NFSERR_TOOSMALL, 465 NFSERR_SERVERFAULT, 466 0, 467}; 468 469static short nfsv3err_fsstat[] = { 470 NFSERR_IO, 471 NFSERR_IO, 472 NFSERR_STALE, 473 NFSERR_BADHANDLE, 474 NFSERR_SERVERFAULT, 475 0, 476}; 477 478static short nfsv3err_fsinfo[] = { 479 NFSERR_STALE, 480 NFSERR_STALE, 481 NFSERR_BADHANDLE, 482 NFSERR_SERVERFAULT, 483 0, 484}; 485 486static short nfsv3err_pathconf[] = { 487 NFSERR_STALE, 488 NFSERR_STALE, 489 NFSERR_BADHANDLE, 490 NFSERR_SERVERFAULT, 491 0, 492}; 493 494static short nfsv3err_commit[] = { 495 NFSERR_IO, 496 NFSERR_IO, 497 NFSERR_STALE, 498 NFSERR_BADHANDLE, 499 NFSERR_SERVERFAULT, 500 0, 501}; 502 503static short *nfsrv_v3errmap[] = { 504 nfsv3err_null, 505 nfsv3err_getattr, 506 nfsv3err_setattr, 507 nfsv3err_lookup, 508 nfsv3err_access, 509 nfsv3err_readlink, 510 nfsv3err_read, 511 nfsv3err_write, 512 nfsv3err_create, 513 nfsv3err_mkdir, 514 nfsv3err_symlink, 515 nfsv3err_mknod, 516 nfsv3err_remove, 517 nfsv3err_rmdir, 518 nfsv3err_rename, 519 nfsv3err_link, 520 nfsv3err_readdir, 521 nfsv3err_readdirplus, 522 nfsv3err_fsstat, 523 nfsv3err_fsinfo, 524 nfsv3err_pathconf, 525 nfsv3err_commit, 526}; 527 528extern struct proc *nfs_iodwant[NFS_MAXASYNCDAEMON]; 529extern struct nfsrtt nfsrtt; 530extern time_t nqnfsstarttime; 531extern int nqsrv_clockskew; 532extern int nqsrv_writeslack; 533extern int nqsrv_maxlease; 534extern struct nfsstats nfsstats; 535extern int nqnfs_piggy[NFS_NPROCS]; 536extern nfstype nfsv2_type[9]; 537extern nfstype nfsv3_type[9]; 538extern struct nfsnodehashhead *nfsnodehashtbl; 539extern u_long nfsnodehash; 540 541#ifdef VFS_LKM 542struct getfh_args; 543extern int getfh(struct proc *, struct getfh_args *, int *); 544struct nfssvc_args; 545extern int nfssvc(struct proc *, struct nfssvc_args *, int *); 546#endif 547 548LIST_HEAD(nfsnodehashhead, nfsnode); 549 550/* 551 * Create the header for an rpc request packet 552 * The hsiz is the size of the rest of the nfs request header. 553 * (just used to decide if a cluster is a good idea) 554 */ 555struct mbuf * 556nfsm_reqh(vp, procid, hsiz, bposp) 557 struct vnode *vp; 558 u_long procid; 559 int hsiz; 560 caddr_t *bposp; 561{ 562 register struct mbuf *mb; 563 register u_long *tl; 564 register caddr_t bpos; 565 struct mbuf *mb2; 566 struct nfsmount *nmp; 567 int nqflag; 568 569 MGET(mb, M_WAIT, MT_DATA); 570 if (hsiz >= MINCLSIZE) 571 MCLGET(mb, M_WAIT); 572 mb->m_len = 0; 573 bpos = mtod(mb, caddr_t); 574 575 /* 576 * For NQNFS, add lease request. 577 */ 578 if (vp) { 579 nmp = VFSTONFS(vp->v_mount); 580 if (nmp->nm_flag & NFSMNT_NQNFS) { 581 nqflag = NQNFS_NEEDLEASE(vp, procid); 582 if (nqflag) { 583 nfsm_build(tl, u_long *, 2*NFSX_UNSIGNED); 584 *tl++ = txdr_unsigned(nqflag); 585 *tl = txdr_unsigned(nmp->nm_leaseterm); 586 } else { 587 nfsm_build(tl, u_long *, NFSX_UNSIGNED); 588 *tl = 0; 589 } 590 } 591 } 592 /* Finally, return values */ 593 *bposp = bpos; 594 return (mb); 595} 596 597/* 598 * Build the RPC header and fill in the authorization info. 599 * The authorization string argument is only used when the credentials 600 * come from outside of the kernel. 601 * Returns the head of the mbuf list. 602 */ 603struct mbuf * 604nfsm_rpchead(cr, nmflag, procid, auth_type, auth_len, auth_str, verf_len, 605 verf_str, mrest, mrest_len, mbp, xidp) 606 register struct ucred *cr; 607 int nmflag; 608 int procid; 609 int auth_type; 610 int auth_len; 611 char *auth_str; 612 int verf_len; 613 char *verf_str; 614 struct mbuf *mrest; 615 int mrest_len; 616 struct mbuf **mbp; 617 u_long *xidp; 618{ 619 register struct mbuf *mb; 620 register u_long *tl; 621 register caddr_t bpos; 622 register int i; 623 struct mbuf *mreq, *mb2; 624 int siz, grpsiz, authsiz; 625 626 authsiz = nfsm_rndup(auth_len); 627 MGETHDR(mb, M_WAIT, MT_DATA); 628 if ((authsiz + 10 * NFSX_UNSIGNED) >= MINCLSIZE) { 629 MCLGET(mb, M_WAIT); 630 } else if ((authsiz + 10 * NFSX_UNSIGNED) < MHLEN) { 631 MH_ALIGN(mb, authsiz + 10 * NFSX_UNSIGNED); 632 } else { 633 MH_ALIGN(mb, 8 * NFSX_UNSIGNED); 634 } 635 mb->m_len = 0; 636 mreq = mb; 637 bpos = mtod(mb, caddr_t); 638 639 /* 640 * First the RPC header. 641 */ 642 nfsm_build(tl, u_long *, 8 * NFSX_UNSIGNED); 643 if (++nfs_xid == 0) 644 nfs_xid++; 645 *tl++ = *xidp = txdr_unsigned(nfs_xid); 646 *tl++ = rpc_call; 647 *tl++ = rpc_vers; 648 if (nmflag & NFSMNT_NQNFS) { 649 *tl++ = txdr_unsigned(NQNFS_PROG); 650 *tl++ = txdr_unsigned(NQNFS_VER3); 651 } else { 652 *tl++ = txdr_unsigned(NFS_PROG); 653 if (nmflag & NFSMNT_NFSV3) 654 *tl++ = txdr_unsigned(NFS_VER3); 655 else 656 *tl++ = txdr_unsigned(NFS_VER2); 657 } 658 if (nmflag & NFSMNT_NFSV3) 659 *tl++ = txdr_unsigned(procid); 660 else 661 *tl++ = txdr_unsigned(nfsv2_procid[procid]); 662 663 /* 664 * And then the authorization cred. 665 */ 666 *tl++ = txdr_unsigned(auth_type); 667 *tl = txdr_unsigned(authsiz); 668 switch (auth_type) { 669 case RPCAUTH_UNIX: 670 nfsm_build(tl, u_long *, auth_len); 671 *tl++ = 0; /* stamp ?? */ 672 *tl++ = 0; /* NULL hostname */ 673 *tl++ = txdr_unsigned(cr->cr_uid); 674 *tl++ = txdr_unsigned(cr->cr_groups[0]); 675 grpsiz = (auth_len >> 2) - 5; 676 *tl++ = txdr_unsigned(grpsiz); 677 for (i = 1; i <= grpsiz; i++) 678 *tl++ = txdr_unsigned(cr->cr_groups[i]); 679 break; 680 case RPCAUTH_KERB4: 681 siz = auth_len; 682 while (siz > 0) { 683 if (M_TRAILINGSPACE(mb) == 0) { 684 MGET(mb2, M_WAIT, MT_DATA); 685 if (siz >= MINCLSIZE) 686 MCLGET(mb2, M_WAIT); 687 mb->m_next = mb2; 688 mb = mb2; 689 mb->m_len = 0; 690 bpos = mtod(mb, caddr_t); 691 } 692 i = min(siz, M_TRAILINGSPACE(mb)); 693 bcopy(auth_str, bpos, i); 694 mb->m_len += i; 695 auth_str += i; 696 bpos += i; 697 siz -= i; 698 } 699 if ((siz = (nfsm_rndup(auth_len) - auth_len)) > 0) { 700 for (i = 0; i < siz; i++) 701 *bpos++ = '\0'; 702 mb->m_len += siz; 703 } 704 break; 705 }; 706 707 /* 708 * And the verifier... 709 */ 710 nfsm_build(tl, u_long *, 2 * NFSX_UNSIGNED); 711 if (verf_str) { 712 *tl++ = txdr_unsigned(RPCAUTH_KERB4); 713 *tl = txdr_unsigned(verf_len); 714 siz = verf_len; 715 while (siz > 0) { 716 if (M_TRAILINGSPACE(mb) == 0) { 717 MGET(mb2, M_WAIT, MT_DATA); 718 if (siz >= MINCLSIZE) 719 MCLGET(mb2, M_WAIT); 720 mb->m_next = mb2; 721 mb = mb2; 722 mb->m_len = 0; 723 bpos = mtod(mb, caddr_t); 724 } 725 i = min(siz, M_TRAILINGSPACE(mb)); 726 bcopy(verf_str, bpos, i); 727 mb->m_len += i; 728 verf_str += i; 729 bpos += i; 730 siz -= i; 731 } 732 if ((siz = (nfsm_rndup(verf_len) - verf_len)) > 0) { 733 for (i = 0; i < siz; i++) 734 *bpos++ = '\0'; 735 mb->m_len += siz; 736 } 737 } else { 738 *tl++ = txdr_unsigned(RPCAUTH_NULL); 739 *tl = 0; 740 } 741 mb->m_next = mrest; 742 mreq->m_pkthdr.len = authsiz + 10 * NFSX_UNSIGNED + mrest_len; 743 mreq->m_pkthdr.rcvif = (struct ifnet *)0; 744 *mbp = mb; 745 return (mreq); 746} 747 748/* 749 * copies mbuf chain to the uio scatter/gather list 750 */ 751int 752nfsm_mbuftouio(mrep, uiop, siz, dpos) 753 struct mbuf **mrep; 754 register struct uio *uiop; 755 int siz; 756 caddr_t *dpos; 757{ 758 register char *mbufcp, *uiocp; 759 register int xfer, left, len; 760 register struct mbuf *mp; 761 long uiosiz, rem; 762 int error = 0; 763 764 mp = *mrep; 765 mbufcp = *dpos; 766 len = mtod(mp, caddr_t)+mp->m_len-mbufcp; 767 rem = nfsm_rndup(siz)-siz; 768 while (siz > 0) { 769 if (uiop->uio_iovcnt <= 0 || uiop->uio_iov == NULL) 770 return (EFBIG); 771 left = uiop->uio_iov->iov_len; 772 uiocp = uiop->uio_iov->iov_base; 773 if (left > siz) 774 left = siz; 775 uiosiz = left; 776 while (left > 0) { 777 while (len == 0) { 778 mp = mp->m_next; 779 if (mp == NULL) 780 return (EBADRPC); 781 mbufcp = mtod(mp, caddr_t); 782 len = mp->m_len; 783 } 784 xfer = (left > len) ? len : left; 785#ifdef notdef 786 /* Not Yet.. */ 787 if (uiop->uio_iov->iov_op != NULL) 788 (*(uiop->uio_iov->iov_op)) 789 (mbufcp, uiocp, xfer); 790 else 791#endif 792 if (uiop->uio_segflg == UIO_SYSSPACE) 793 bcopy(mbufcp, uiocp, xfer); 794 else 795 copyout(mbufcp, uiocp, xfer); 796 left -= xfer; 797 len -= xfer; 798 mbufcp += xfer; 799 uiocp += xfer; 800 uiop->uio_offset += xfer; 801 uiop->uio_resid -= xfer; 802 } 803 if (uiop->uio_iov->iov_len <= siz) { 804 uiop->uio_iovcnt--; 805 uiop->uio_iov++; 806 } else { 807 uiop->uio_iov->iov_base += uiosiz; 808 uiop->uio_iov->iov_len -= uiosiz; 809 } 810 siz -= uiosiz; 811 } 812 *dpos = mbufcp; 813 *mrep = mp; 814 if (rem > 0) { 815 if (len < rem) 816 error = nfs_adv(mrep, dpos, rem, len); 817 else 818 *dpos += rem; 819 } 820 return (error); 821} 822 823/* 824 * copies a uio scatter/gather list to an mbuf chain... 825 */ 826int 827nfsm_uiotombuf(uiop, mq, siz, bpos) 828 register struct uio *uiop; 829 struct mbuf **mq; 830 int siz; 831 caddr_t *bpos; 832{ 833 register char *uiocp; 834 register struct mbuf *mp, *mp2; 835 register int xfer, left, mlen; 836 int uiosiz, clflg, rem; 837 char *cp; 838 839 if (siz > MLEN) /* or should it >= MCLBYTES ?? */ 840 clflg = 1; 841 else 842 clflg = 0; 843 rem = nfsm_rndup(siz)-siz; 844 mp = mp2 = *mq; 845 while (siz > 0) { 846 if (uiop->uio_iovcnt <= 0 || uiop->uio_iov == NULL) 847 return (EINVAL); 848 left = uiop->uio_iov->iov_len; 849 uiocp = uiop->uio_iov->iov_base; 850 if (left > siz) 851 left = siz; 852 uiosiz = left; 853 while (left > 0) { 854 mlen = M_TRAILINGSPACE(mp); 855 if (mlen == 0) { 856 MGET(mp, M_WAIT, MT_DATA); 857 if (clflg) 858 MCLGET(mp, M_WAIT); 859 mp->m_len = 0; 860 mp2->m_next = mp; 861 mp2 = mp; 862 mlen = M_TRAILINGSPACE(mp); 863 } 864 xfer = (left > mlen) ? mlen : left; 865#ifdef notdef 866 /* Not Yet.. */ 867 if (uiop->uio_iov->iov_op != NULL) 868 (*(uiop->uio_iov->iov_op)) 869 (uiocp, mtod(mp, caddr_t)+mp->m_len, xfer); 870 else 871#endif 872 if (uiop->uio_segflg == UIO_SYSSPACE) 873 bcopy(uiocp, mtod(mp, caddr_t)+mp->m_len, xfer); 874 else 875 copyin(uiocp, mtod(mp, caddr_t)+mp->m_len, xfer); 876 mp->m_len += xfer; 877 left -= xfer; 878 uiocp += xfer; 879 uiop->uio_offset += xfer; 880 uiop->uio_resid -= xfer; 881 } 882 if (uiop->uio_iov->iov_len <= siz) { 883 uiop->uio_iovcnt--; 884 uiop->uio_iov++; 885 } else { 886 uiop->uio_iov->iov_base += uiosiz; 887 uiop->uio_iov->iov_len -= uiosiz; 888 } 889 siz -= uiosiz; 890 } 891 if (rem > 0) { 892 if (rem > M_TRAILINGSPACE(mp)) { 893 MGET(mp, M_WAIT, MT_DATA); 894 mp->m_len = 0; 895 mp2->m_next = mp; 896 } 897 cp = mtod(mp, caddr_t)+mp->m_len; 898 for (left = 0; left < rem; left++) 899 *cp++ = '\0'; 900 mp->m_len += rem; 901 *bpos = cp; 902 } else 903 *bpos = mtod(mp, caddr_t)+mp->m_len; 904 *mq = mp; 905 return (0); 906} 907 908/* 909 * Help break down an mbuf chain by setting the first siz bytes contiguous 910 * pointed to by returned val. 911 * This is used by the macros nfsm_dissect and nfsm_dissecton for tough 912 * cases. (The macros use the vars. dpos and dpos2) 913 */ 914int 915nfsm_disct(mdp, dposp, siz, left, cp2) 916 struct mbuf **mdp; 917 caddr_t *dposp; 918 int siz; 919 int left; 920 caddr_t *cp2; 921{ 922 register struct mbuf *mp, *mp2; 923 register int siz2, xfer; 924 register caddr_t p; 925 926 mp = *mdp; 927 while (left == 0) { 928 *mdp = mp = mp->m_next; 929 if (mp == NULL) 930 return (EBADRPC); 931 left = mp->m_len; 932 *dposp = mtod(mp, caddr_t); 933 } 934 if (left >= siz) { 935 *cp2 = *dposp; 936 *dposp += siz; 937 } else if (mp->m_next == NULL) { 938 return (EBADRPC); 939 } else if (siz > MHLEN) { 940 panic("nfs S too big"); 941 } else { 942 MGET(mp2, M_WAIT, MT_DATA); 943 mp2->m_next = mp->m_next; 944 mp->m_next = mp2; 945 mp->m_len -= left; 946 mp = mp2; 947 *cp2 = p = mtod(mp, caddr_t); 948 bcopy(*dposp, p, left); /* Copy what was left */ 949 siz2 = siz-left; 950 p += left; 951 mp2 = mp->m_next; 952 /* Loop around copying up the siz2 bytes */ 953 while (siz2 > 0) { 954 if (mp2 == NULL) 955 return (EBADRPC); 956 xfer = (siz2 > mp2->m_len) ? mp2->m_len : siz2; 957 if (xfer > 0) { 958 bcopy(mtod(mp2, caddr_t), p, xfer); 959 NFSMADV(mp2, xfer); 960 mp2->m_len -= xfer; 961 p += xfer; 962 siz2 -= xfer; 963 } 964 if (siz2 > 0) 965 mp2 = mp2->m_next; 966 } 967 mp->m_len = siz; 968 *mdp = mp2; 969 *dposp = mtod(mp2, caddr_t); 970 } 971 return (0); 972} 973 974/* 975 * Advance the position in the mbuf chain. 976 */ 977int 978nfs_adv(mdp, dposp, offs, left) 979 struct mbuf **mdp; 980 caddr_t *dposp; 981 int offs; 982 int left; 983{ 984 register struct mbuf *m; 985 register int s; 986 987 m = *mdp; 988 s = left; 989 while (s < offs) { 990 offs -= s; 991 m = m->m_next; 992 if (m == NULL) 993 return (EBADRPC); 994 s = m->m_len; 995 } 996 *mdp = m; 997 *dposp = mtod(m, caddr_t)+offs; 998 return (0); 999} 1000 1001/* 1002 * Copy a string into mbufs for the hard cases... 1003 */ 1004int 1005nfsm_strtmbuf(mb, bpos, cp, siz) 1006 struct mbuf **mb; 1007 char **bpos; 1008 char *cp; 1009 long siz; 1010{ 1011 register struct mbuf *m1 = 0, *m2; 1012 long left, xfer, len, tlen; 1013 u_long *tl; 1014 int putsize; 1015 1016 putsize = 1; 1017 m2 = *mb; 1018 left = M_TRAILINGSPACE(m2); 1019 if (left > 0) { 1020 tl = ((u_long *)(*bpos)); 1021 *tl++ = txdr_unsigned(siz); 1022 putsize = 0; 1023 left -= NFSX_UNSIGNED; 1024 m2->m_len += NFSX_UNSIGNED; 1025 if (left > 0) { 1026 bcopy(cp, (caddr_t) tl, left); 1027 siz -= left; 1028 cp += left; 1029 m2->m_len += left; 1030 left = 0; 1031 } 1032 } 1033 /* Loop around adding mbufs */ 1034 while (siz > 0) { 1035 MGET(m1, M_WAIT, MT_DATA); 1036 if (siz > MLEN) 1037 MCLGET(m1, M_WAIT); 1038 m1->m_len = NFSMSIZ(m1); 1039 m2->m_next = m1; 1040 m2 = m1; 1041 tl = mtod(m1, u_long *); 1042 tlen = 0; 1043 if (putsize) { 1044 *tl++ = txdr_unsigned(siz); 1045 m1->m_len -= NFSX_UNSIGNED; 1046 tlen = NFSX_UNSIGNED; 1047 putsize = 0; 1048 } 1049 if (siz < m1->m_len) { 1050 len = nfsm_rndup(siz); 1051 xfer = siz; 1052 if (xfer < len) 1053 *(tl+(xfer>>2)) = 0; 1054 } else { 1055 xfer = len = m1->m_len; 1056 } 1057 bcopy(cp, (caddr_t) tl, xfer); 1058 m1->m_len = len+tlen; 1059 siz -= xfer; 1060 cp += xfer; 1061 } 1062 *mb = m1; 1063 *bpos = mtod(m1, caddr_t)+m1->m_len; 1064 return (0); 1065} 1066 1067/* 1068 * Called once to initialize data structures... 1069 */ 1070int 1071nfs_init() 1072{ 1073 register int i; 1074 1075 /* 1076 * Check to see if major data structures haven't bloated. 1077 */ 1078 if (sizeof (struct nfsnode) > NFS_NODEALLOC) { 1079 printf("struct nfsnode bloated (> %dbytes)\n", NFS_NODEALLOC); 1080 printf("Try reducing NFS_SMALLFH\n"); 1081 } 1082 if (sizeof (struct nfsmount) > NFS_MNTALLOC) { 1083 printf("struct nfsmount bloated (> %dbytes)\n", NFS_MNTALLOC); 1084 printf("Try reducing NFS_MUIDHASHSIZ\n"); 1085 } 1086 if (sizeof (struct nfssvc_sock) > NFS_SVCALLOC) { 1087 printf("struct nfssvc_sock bloated (> %dbytes)\n",NFS_SVCALLOC); 1088 printf("Try reducing NFS_UIDHASHSIZ\n"); 1089 } 1090 if (sizeof (struct nfsuid) > NFS_UIDALLOC) { 1091 printf("struct nfsuid bloated (> %dbytes)\n",NFS_UIDALLOC); 1092 printf("Try unionizing the nu_nickname and nu_flag fields\n"); 1093 } 1094 nfsrtt.pos = 0; 1095 rpc_vers = txdr_unsigned(RPC_VER2); 1096 rpc_call = txdr_unsigned(RPC_CALL); 1097 rpc_reply = txdr_unsigned(RPC_REPLY); 1098 rpc_msgdenied = txdr_unsigned(RPC_MSGDENIED); 1099 rpc_msgaccepted = txdr_unsigned(RPC_MSGACCEPTED); 1100 rpc_mismatch = txdr_unsigned(RPC_MISMATCH); 1101 rpc_autherr = txdr_unsigned(RPC_AUTHERR); 1102 rpc_auth_unix = txdr_unsigned(RPCAUTH_UNIX); 1103 rpc_auth_kerb = txdr_unsigned(RPCAUTH_KERB4); 1104 nfs_prog = txdr_unsigned(NFS_PROG); 1105 nqnfs_prog = txdr_unsigned(NQNFS_PROG); 1106 nfs_true = txdr_unsigned(TRUE); 1107 nfs_false = txdr_unsigned(FALSE); 1108 nfs_xdrneg1 = txdr_unsigned(-1); 1109 nfs_ticks = (hz * NFS_TICKINTVL + 500) / 1000; 1110 if (nfs_ticks < 1) 1111 nfs_ticks = 1; 1112 /* Ensure async daemons disabled */ 1113 for (i = 0; i < NFS_MAXASYNCDAEMON; i++) 1114 nfs_iodwant[i] = (struct proc *)0; 1115 TAILQ_INIT(&nfs_bufq); 1116 nfs_nhinit(); /* Init the nfsnode table */ 1117 nfsrv_init(0); /* Init server data structures */ 1118 nfsrv_initcache(); /* Init the server request cache */ 1119 1120 /* 1121 * Initialize the nqnfs server stuff. 1122 */ 1123 if (nqnfsstarttime == 0) { 1124 nqnfsstarttime = boottime.tv_sec + nqsrv_maxlease 1125 + nqsrv_clockskew + nqsrv_writeslack; 1126 NQLOADNOVRAM(nqnfsstarttime); 1127 CIRCLEQ_INIT(&nqtimerhead); 1128 nqfhhashtbl = hashinit(NQLCHSZ, M_NQLEASE, &nqfhhash); 1129 } 1130 1131 /* 1132 * Initialize reply list and start timer 1133 */ 1134 TAILQ_INIT(&nfs_reqq); 1135 nfs_timer(0); 1136 1137#ifdef __FreeBSD__ 1138 /* 1139 * Set up lease_check and lease_updatetime so that other parts 1140 * of the system can call us, if we are loadable. 1141 */ 1142 lease_check = nfs_lease_check; 1143 lease_updatetime = nfs_lease_updatetime; 1144 vfsconf[MOUNT_NFS]->vfc_refcount++; /* make us non-unloadable */ 1145#ifdef VFS_LKM 1146 sysent[SYS_nfssvc].sy_narg = 2; 1147 sysent[SYS_nfssvc].sy_call = nfssvc; 1148 sysent[SYS_getfh].sy_narg = 2; 1149 sysent[SYS_getfh].sy_call = getfh; 1150#endif 1151#endif 1152 1153 return (0); 1154} 1155 1156/* 1157 * Attribute cache routines. 1158 * nfs_loadattrcache() - loads or updates the cache contents from attributes 1159 * that are on the mbuf list 1160 * nfs_getattrcache() - returns valid attributes if found in cache, returns 1161 * error otherwise 1162 */ 1163 1164/* 1165 * Load the attribute cache (that lives in the nfsnode entry) with 1166 * the values on the mbuf list and 1167 * Iff vap not NULL 1168 * copy the attributes to *vaper 1169 */ 1170int 1171nfs_loadattrcache(vpp, mdp, dposp, vaper) 1172 struct vnode **vpp; 1173 struct mbuf **mdp; 1174 caddr_t *dposp; 1175 struct vattr *vaper; 1176{ 1177 register struct vnode *vp = *vpp; 1178 register struct vattr *vap; 1179 register struct nfs_fattr *fp; 1180 register struct nfsnode *np; 1181 register struct nfsnodehashhead *nhpp; 1182 register long t1; 1183 caddr_t cp2; 1184 int error = 0, rdev; 1185 struct mbuf *md; 1186 enum vtype vtyp; 1187 u_short vmode; 1188 struct timespec mtime; 1189 struct vnode *nvp; 1190 quad_t tval; 1191 int v3 = NFS_ISV3(vp); 1192 1193 md = *mdp; 1194 t1 = (mtod(md, caddr_t) + md->m_len) - *dposp; 1195 if (error = nfsm_disct(mdp, dposp, NFSX_FATTR(v3), t1, &cp2)) 1196 return (error); 1197 fp = (struct nfs_fattr *)cp2; 1198 if (v3) { 1199 vtyp = nfsv3tov_type(fp->fa_type); 1200 vmode = fxdr_unsigned(u_short, fp->fa_mode); 1201 rdev = makedev(fxdr_unsigned(u_char, fp->fa3_rdev.specdata1), 1202 fxdr_unsigned(u_char, fp->fa3_rdev.specdata2)); 1203 fxdr_nfsv3time(&fp->fa3_mtime, &mtime); 1204 } else { 1205 vtyp = nfsv2tov_type(fp->fa_type); 1206 vmode = fxdr_unsigned(u_short, fp->fa_mode); 1207 /* 1208 * XXX 1209 * 1210 * The duplicate information returned in fa_type and fa_mode 1211 * is an ambiguity in the NFS version 2 protocol. 1212 * 1213 * VREG should be taken literally as a regular file. If a 1214 * server intents to return some type information differently 1215 * in the upper bits of the mode field (e.g. for sockets, or 1216 * FIFOs), NFSv2 mandates fa_type to be VNON. Anyway, we 1217 * leave the examination of the mode bits even in the VREG 1218 * case to avoid breakage for bogus servers, but we make sure 1219 * that there are actually type bits set in the upper part of 1220 * fa_mode (and failing that, trust the va_type field). 1221 * 1222 * NFSv3 cleared the issue, and requires fa_mode to not 1223 * contain any type information (while also introduing sockets 1224 * and FIFOs for fa_type). 1225 */ 1226 if (vtyp == VNON || (vtyp == VREG && (vmode & S_IFMT) != 0)) 1227 vtyp = IFTOVT(vmode); 1228 rdev = fxdr_unsigned(long, fp->fa2_rdev); 1229 fxdr_nfsv2time(&fp->fa2_mtime, &mtime); 1230 1231 /* 1232 * Really ugly NFSv2 kludge. 1233 */ 1234 if (vtyp == VCHR && rdev == 0xffffffff) 1235 vtyp = VFIFO; 1236 } 1237 1238 /* 1239 * If v_type == VNON it is a new node, so fill in the v_type, 1240 * n_mtime fields. Check to see if it represents a special 1241 * device, and if so, check for a possible alias. Once the 1242 * correct vnode has been obtained, fill in the rest of the 1243 * information. 1244 */ 1245 np = VTONFS(vp); 1246 if (vp->v_type != vtyp) { 1247 /* 1248 * If we had a lock and it turns out that the vnode 1249 * is an object which we don't want to lock (e.g. VDIR) 1250 * to avoid nasty hanging problems on a server crash, 1251 * then release it here. 1252 */ 1253 if (vtyp != VREG && VOP_ISLOCKED(vp)) 1254 VOP_UNLOCK(vp); 1255 vp->v_type = vtyp; 1256 if (vp->v_type == VFIFO) { 1257 vp->v_op = fifo_nfsv2nodeop_p; 1258 } 1259 if (vp->v_type == VCHR || vp->v_type == VBLK) { 1260 vp->v_op = spec_nfsv2nodeop_p; 1261 nvp = checkalias(vp, (dev_t)rdev, vp->v_mount); 1262 if (nvp) { 1263 /* 1264 * Discard unneeded vnode, but save its nfsnode. 1265 */ 1266 LIST_REMOVE(np, n_hash); 1267 nvp->v_data = vp->v_data; 1268 vp->v_data = NULL; 1269 vp->v_op = spec_vnodeop_p; 1270 vrele(vp); 1271 vgone(vp); 1272 /* 1273 * Reinitialize aliased node. 1274 */ 1275 np->n_vnode = nvp; 1276 nhpp = NFSNOHASH(nfs_hash(np->n_fhp, np->n_fhsize)); 1277 LIST_INSERT_HEAD(nhpp, np, n_hash); 1278 *vpp = vp = nvp; 1279 } 1280 } 1281 np->n_mtime = mtime.ts_sec; 1282 } 1283 vap = &np->n_vattr; 1284 vap->va_type = vtyp; 1285 vap->va_mode = (vmode & 07777); 1286 vap->va_rdev = (dev_t)rdev; 1287 vap->va_mtime = mtime; 1288 vap->va_fsid = vp->v_mount->mnt_stat.f_fsid.val[0]; 1289 if (v3) { 1290 vap->va_nlink = fxdr_unsigned(u_short, fp->fa_nlink); 1291 vap->va_uid = fxdr_unsigned(uid_t, fp->fa_uid); 1292 vap->va_gid = fxdr_unsigned(gid_t, fp->fa_gid); 1293 fxdr_hyper(&fp->fa3_size, &vap->va_size); 1294 vap->va_blocksize = NFS_FABLKSIZE; 1295 fxdr_hyper(&fp->fa3_used, &vap->va_bytes); 1296 vap->va_fileid = fxdr_unsigned(int, fp->fa3_fileid.nfsuquad[1]); 1297 fxdr_nfsv3time(&fp->fa3_atime, &vap->va_atime); 1298 fxdr_nfsv3time(&fp->fa3_ctime, &vap->va_ctime); 1299 vap->va_flags = 0; 1300 vap->va_filerev = 0; 1301 } else { 1302 vap->va_nlink = fxdr_unsigned(u_short, fp->fa_nlink); 1303 vap->va_uid = fxdr_unsigned(uid_t, fp->fa_uid); 1304 vap->va_gid = fxdr_unsigned(gid_t, fp->fa_gid); 1305 vap->va_size = fxdr_unsigned(u_long, fp->fa2_size); 1306 vap->va_blocksize = fxdr_unsigned(long, fp->fa2_blocksize); 1307 vap->va_bytes = fxdr_unsigned(long, fp->fa2_blocks) * NFS_FABLKSIZE; 1308 vap->va_fileid = fxdr_unsigned(long, fp->fa2_fileid); 1309 fxdr_nfsv2time(&fp->fa2_atime, &vap->va_atime); 1310 vap->va_flags = 0; 1311 vap->va_ctime.ts_sec = fxdr_unsigned(long, fp->fa2_ctime.nfsv2_sec); 1312 vap->va_ctime.ts_nsec = 0; 1313 vap->va_gen = fxdr_unsigned(u_long, fp->fa2_ctime.nfsv2_usec); 1314 vap->va_filerev = 0; 1315 } 1316 if (vap->va_size != np->n_size) { 1317 if (vap->va_type == VREG) { 1318 if (np->n_flag & NMODIFIED) { 1319 if (vap->va_size < np->n_size) 1320 vap->va_size = np->n_size; 1321 else 1322 np->n_size = vap->va_size; 1323 } else 1324 np->n_size = vap->va_size; 1325 vnode_pager_setsize(vp, (u_long)np->n_size); 1326 } else 1327 np->n_size = vap->va_size; 1328 } 1329 np->n_attrstamp = time.tv_sec; 1330 if (vaper != NULL) { 1331 bcopy((caddr_t)vap, (caddr_t)vaper, sizeof(*vap)); 1332 if (np->n_flag & NCHG) { 1333 if (np->n_flag & NACC) 1334 vaper->va_atime = np->n_atim; 1335 if (np->n_flag & NUPD) 1336 vaper->va_mtime = np->n_mtim; 1337 } 1338 } 1339 return (0); 1340} 1341 1342/* 1343 * Check the time stamp 1344 * If the cache is valid, copy contents to *vap and return 0 1345 * otherwise return an error 1346 */ 1347int 1348nfs_getattrcache(vp, vaper) 1349 register struct vnode *vp; 1350 struct vattr *vaper; 1351{ 1352 register struct nfsnode *np = VTONFS(vp); 1353 register struct vattr *vap; 1354 1355 if ((time.tv_sec - np->n_attrstamp) >= NFS_ATTRTIMEO(np)) { 1356 nfsstats.attrcache_misses++; 1357 return (ENOENT); 1358 } 1359 nfsstats.attrcache_hits++; 1360 vap = &np->n_vattr; 1361 if (vap->va_size != np->n_size) { 1362 if (vap->va_type == VREG) { 1363 if (np->n_flag & NMODIFIED) { 1364 if (vap->va_size < np->n_size) 1365 vap->va_size = np->n_size; 1366 else 1367 np->n_size = vap->va_size; 1368 } else 1369 np->n_size = vap->va_size; 1370 vnode_pager_setsize(vp, (u_long)np->n_size); 1371 } else 1372 np->n_size = vap->va_size; 1373 } 1374 bcopy((caddr_t)vap, (caddr_t)vaper, sizeof(struct vattr)); 1375 if (np->n_flag & NCHG) { 1376 if (np->n_flag & NACC) 1377 vaper->va_atime = np->n_atim; 1378 if (np->n_flag & NUPD) 1379 vaper->va_mtime = np->n_mtim; 1380 } 1381 return (0); 1382} 1383 1384/* 1385 * Set up nameidata for a lookup() call and do it 1386 */ 1387int 1388nfs_namei(ndp, fhp, len, slp, nam, mdp, dposp, retdirp, p, kerbflag) 1389 register struct nameidata *ndp; 1390 fhandle_t *fhp; 1391 int len; 1392 struct nfssvc_sock *slp; 1393 struct mbuf *nam; 1394 struct mbuf **mdp; 1395 caddr_t *dposp; 1396 struct vnode **retdirp; 1397 struct proc *p; 1398 int kerbflag; 1399{ 1400 register int i, rem; 1401 register struct mbuf *md; 1402 register char *fromcp, *tocp; 1403 struct vnode *dp; 1404 int error, rdonly; 1405 struct componentname *cnp = &ndp->ni_cnd; 1406 1407 *retdirp = (struct vnode *)0; 1408 MALLOC(cnp->cn_pnbuf, char *, len + 1, M_NAMEI, M_WAITOK); 1409 /* 1410 * Copy the name from the mbuf list to ndp->ni_pnbuf 1411 * and set the various ndp fields appropriately. 1412 */ 1413 fromcp = *dposp; 1414 tocp = cnp->cn_pnbuf; 1415 md = *mdp; 1416 rem = mtod(md, caddr_t) + md->m_len - fromcp; 1417 cnp->cn_hash = 0; 1418 for (i = 0; i < len; i++) { 1419 while (rem == 0) { 1420 md = md->m_next; 1421 if (md == NULL) { 1422 error = EBADRPC; 1423 goto out; 1424 } 1425 fromcp = mtod(md, caddr_t); 1426 rem = md->m_len; 1427 } 1428 if (*fromcp == '\0' || *fromcp == '/') { 1429 error = EACCES; 1430 goto out; 1431 } 1432 cnp->cn_hash += (unsigned char)*fromcp; 1433 *tocp++ = *fromcp++; 1434 rem--; 1435 } 1436 *tocp = '\0'; 1437 *mdp = md; 1438 *dposp = fromcp; 1439 len = nfsm_rndup(len)-len; 1440 if (len > 0) { 1441 if (rem >= len) 1442 *dposp += len; 1443 else if (error = nfs_adv(mdp, dposp, len, rem)) 1444 goto out; 1445 } 1446 ndp->ni_pathlen = tocp - cnp->cn_pnbuf; 1447 cnp->cn_nameptr = cnp->cn_pnbuf; 1448 /* 1449 * Extract and set starting directory. 1450 */ 1451 if (error = nfsrv_fhtovp(fhp, FALSE, &dp, ndp->ni_cnd.cn_cred, slp, 1452 nam, &rdonly, kerbflag)) 1453 goto out; 1454 if (dp->v_type != VDIR) { 1455 nfsrv_vrele(dp); 1456 error = ENOTDIR; 1457 goto out; 1458 } 1459 VREF(dp); 1460 *retdirp = dp; 1461 ndp->ni_startdir = dp; 1462 if (rdonly) 1463 cnp->cn_flags |= (NOCROSSMOUNT | RDONLY); 1464 else 1465 cnp->cn_flags |= NOCROSSMOUNT; 1466 /* 1467 * And call lookup() to do the real work 1468 */ 1469 cnp->cn_proc = p; 1470 if (error = lookup(ndp)) 1471 goto out; 1472 /* 1473 * Check for encountering a symbolic link 1474 */ 1475 if (cnp->cn_flags & ISSYMLINK) { 1476 if ((cnp->cn_flags & LOCKPARENT) && ndp->ni_pathlen == 1) 1477 vput(ndp->ni_dvp); 1478 else 1479 vrele(ndp->ni_dvp); 1480 vput(ndp->ni_vp); 1481 ndp->ni_vp = NULL; 1482 error = EINVAL; 1483 goto out; 1484 } 1485 1486 nfsrv_vmio(ndp->ni_vp); 1487 1488 /* 1489 * Check for saved name request 1490 */ 1491 if (cnp->cn_flags & (SAVENAME | SAVESTART)) { 1492 cnp->cn_flags |= HASBUF; 1493 return (0); 1494 } 1495out: 1496 FREE(cnp->cn_pnbuf, M_NAMEI); 1497 return (error); 1498} 1499 1500/* 1501 * A fiddled version of m_adj() that ensures null fill to a long 1502 * boundary and only trims off the back end 1503 */ 1504void 1505nfsm_adj(mp, len, nul) 1506 struct mbuf *mp; 1507 register int len; 1508 int nul; 1509{ 1510 register struct mbuf *m; 1511 register int count, i; 1512 register char *cp; 1513 1514 /* 1515 * Trim from tail. Scan the mbuf chain, 1516 * calculating its length and finding the last mbuf. 1517 * If the adjustment only affects this mbuf, then just 1518 * adjust and return. Otherwise, rescan and truncate 1519 * after the remaining size. 1520 */ 1521 count = 0; 1522 m = mp; 1523 for (;;) { 1524 count += m->m_len; 1525 if (m->m_next == (struct mbuf *)0) 1526 break; 1527 m = m->m_next; 1528 } 1529 if (m->m_len > len) { 1530 m->m_len -= len; 1531 if (nul > 0) { 1532 cp = mtod(m, caddr_t)+m->m_len-nul; 1533 for (i = 0; i < nul; i++) 1534 *cp++ = '\0'; 1535 } 1536 return; 1537 } 1538 count -= len; 1539 if (count < 0) 1540 count = 0; 1541 /* 1542 * Correct length for chain is "count". 1543 * Find the mbuf with last data, adjust its length, 1544 * and toss data from remaining mbufs on chain. 1545 */ 1546 for (m = mp; m; m = m->m_next) { 1547 if (m->m_len >= count) { 1548 m->m_len = count; 1549 if (nul > 0) { 1550 cp = mtod(m, caddr_t)+m->m_len-nul; 1551 for (i = 0; i < nul; i++) 1552 *cp++ = '\0'; 1553 } 1554 break; 1555 } 1556 count -= m->m_len; 1557 } 1558 for (m = m->m_next;m;m = m->m_next) 1559 m->m_len = 0; 1560} 1561 1562/* 1563 * Make these functions instead of macros, so that the kernel text size 1564 * doesn't get too big... 1565 */ 1566void 1567nfsm_srvwcc(nfsd, before_ret, before_vap, after_ret, after_vap, mbp, bposp) 1568 struct nfsrv_descript *nfsd; 1569 int before_ret; 1570 register struct vattr *before_vap; 1571 int after_ret; 1572 struct vattr *after_vap; 1573 struct mbuf **mbp; 1574 char **bposp; 1575{ 1576 register struct mbuf *mb = *mbp, *mb2; 1577 register char *bpos = *bposp; 1578 register u_long *tl; 1579 1580 if (before_ret) { 1581 nfsm_build(tl, u_long *, NFSX_UNSIGNED); 1582 *tl = nfs_false; 1583 } else { 1584 nfsm_build(tl, u_long *, 7 * NFSX_UNSIGNED); 1585 *tl++ = nfs_true; 1586 txdr_hyper(&(before_vap->va_size), tl); 1587 tl += 2; 1588 txdr_nfsv3time(&(before_vap->va_mtime), tl); 1589 tl += 2; 1590 txdr_nfsv3time(&(before_vap->va_ctime), tl); 1591 } 1592 *bposp = bpos; 1593 *mbp = mb; 1594 nfsm_srvpostopattr(nfsd, after_ret, after_vap, mbp, bposp); 1595} 1596 1597void 1598nfsm_srvpostopattr(nfsd, after_ret, after_vap, mbp, bposp) 1599 struct nfsrv_descript *nfsd; 1600 int after_ret; 1601 struct vattr *after_vap; 1602 struct mbuf **mbp; 1603 char **bposp; 1604{ 1605 register struct mbuf *mb = *mbp, *mb2; 1606 register char *bpos = *bposp; 1607 register u_long *tl; 1608 register struct nfs_fattr *fp; 1609 1610 if (after_ret) { 1611 nfsm_build(tl, u_long *, NFSX_UNSIGNED); 1612 *tl = nfs_false; 1613 } else { 1614 nfsm_build(tl, u_long *, NFSX_UNSIGNED + NFSX_V3FATTR); 1615 *tl++ = nfs_true; 1616 fp = (struct nfs_fattr *)tl; 1617 nfsm_srvfattr(nfsd, after_vap, fp); 1618 } 1619 *mbp = mb; 1620 *bposp = bpos; 1621} 1622 1623void 1624nfsm_srvfattr(nfsd, vap, fp) 1625 register struct nfsrv_descript *nfsd; 1626 register struct vattr *vap; 1627 register struct nfs_fattr *fp; 1628{ 1629 1630 fp->fa_nlink = txdr_unsigned(vap->va_nlink); 1631 fp->fa_uid = txdr_unsigned(vap->va_uid); 1632 fp->fa_gid = txdr_unsigned(vap->va_gid); 1633 if (nfsd->nd_flag & ND_NFSV3) { 1634 fp->fa_type = vtonfsv3_type(vap->va_type); 1635 fp->fa_mode = vtonfsv3_mode(vap->va_mode); 1636 txdr_hyper(&vap->va_size, &fp->fa3_size); 1637 txdr_hyper(&vap->va_bytes, &fp->fa3_used); 1638 fp->fa3_rdev.specdata1 = txdr_unsigned(major(vap->va_rdev)); 1639 fp->fa3_rdev.specdata2 = txdr_unsigned(minor(vap->va_rdev)); 1640 fp->fa3_fsid.nfsuquad[0] = 0; 1641 fp->fa3_fsid.nfsuquad[1] = txdr_unsigned(vap->va_fsid); 1642 fp->fa3_fileid.nfsuquad[0] = 0; 1643 fp->fa3_fileid.nfsuquad[1] = txdr_unsigned(vap->va_fileid); 1644 txdr_nfsv3time(&vap->va_atime, &fp->fa3_atime); 1645 txdr_nfsv3time(&vap->va_mtime, &fp->fa3_mtime); 1646 txdr_nfsv3time(&vap->va_ctime, &fp->fa3_ctime); 1647 } else { 1648 fp->fa_type = vtonfsv2_type(vap->va_type); 1649 fp->fa_mode = vtonfsv2_mode(vap->va_type, vap->va_mode); 1650 fp->fa2_size = txdr_unsigned(vap->va_size); 1651 fp->fa2_blocksize = txdr_unsigned(vap->va_blocksize); 1652 if (vap->va_type == VFIFO) 1653 fp->fa2_rdev = 0xffffffff; 1654 else 1655 fp->fa2_rdev = txdr_unsigned(vap->va_rdev); 1656 fp->fa2_blocks = txdr_unsigned(vap->va_bytes / NFS_FABLKSIZE); 1657 fp->fa2_fsid = txdr_unsigned(vap->va_fsid); 1658 fp->fa2_fileid = txdr_unsigned(vap->va_fileid); 1659 txdr_nfsv2time(&vap->va_atime, &fp->fa2_atime); 1660 txdr_nfsv2time(&vap->va_mtime, &fp->fa2_mtime); 1661 txdr_nfsv2time(&vap->va_ctime, &fp->fa2_ctime); 1662 } 1663} 1664 1665/* 1666 * nfsrv_fhtovp() - convert a fh to a vnode ptr (optionally locked) 1667 * - look up fsid in mount list (if not found ret error) 1668 * - get vp and export rights by calling VFS_FHTOVP() 1669 * - if cred->cr_uid == 0 or MNT_EXPORTANON set it to credanon 1670 * - if not lockflag unlock it with VOP_UNLOCK() 1671 */ 1672int 1673nfsrv_fhtovp(fhp, lockflag, vpp, cred, slp, nam, rdonlyp, kerbflag) 1674 fhandle_t *fhp; 1675 int lockflag; 1676 struct vnode **vpp; 1677 struct ucred *cred; 1678 struct nfssvc_sock *slp; 1679 struct mbuf *nam; 1680 int *rdonlyp; 1681 int kerbflag; 1682{ 1683 register struct mount *mp; 1684 register struct nfsuid *uidp; 1685 register int i; 1686 struct ucred *credanon; 1687 int error, exflags; 1688 1689 *vpp = (struct vnode *)0; 1690 mp = getvfs(&fhp->fh_fsid); 1691 if (!mp) 1692 return (ESTALE); 1693 error = VFS_FHTOVP(mp, &fhp->fh_fid, nam, vpp, &exflags, &credanon); 1694 if (error) 1695 return (error); 1696 /* 1697 * Check/setup credentials. 1698 */ 1699 if (exflags & MNT_EXKERB) { 1700 if (!kerbflag) { 1701 vput(*vpp); 1702 return (NFSERR_AUTHERR | AUTH_TOOWEAK); 1703 } 1704 } else if (kerbflag) { 1705 vput(*vpp); 1706 return (NFSERR_AUTHERR | AUTH_TOOWEAK); 1707 } else if (cred->cr_uid == 0 || (exflags & MNT_EXPORTANON)) { 1708 cred->cr_uid = credanon->cr_uid; 1709 for (i = 0; i < credanon->cr_ngroups && i < NGROUPS; i++) 1710 cred->cr_groups[i] = credanon->cr_groups[i]; 1711 cred->cr_ngroups = i; 1712 } 1713 if (exflags & MNT_EXRDONLY) 1714 *rdonlyp = 1; 1715 else 1716 *rdonlyp = 0; 1717 1718 nfsrv_vmio(*vpp); 1719 1720 if (!lockflag) 1721 VOP_UNLOCK(*vpp); 1722 return (0); 1723} 1724 1725/* 1726 * This function compares two net addresses by family and returns TRUE 1727 * if they are the same host. 1728 * If there is any doubt, return FALSE. 1729 * The AF_INET family is handled as a special case so that address mbufs 1730 * don't need to be saved to store "struct in_addr", which is only 4 bytes. 1731 */ 1732int 1733netaddr_match(family, haddr, nam) 1734 int family; 1735 union nethostaddr *haddr; 1736 struct mbuf *nam; 1737{ 1738 register struct sockaddr_in *inetaddr; 1739 1740 switch (family) { 1741 case AF_INET: 1742 inetaddr = mtod(nam, struct sockaddr_in *); 1743 if (inetaddr->sin_family == AF_INET && 1744 inetaddr->sin_addr.s_addr == haddr->had_inetaddr) 1745 return (1); 1746 break; 1747#ifdef ISO 1748 case AF_ISO: 1749 { 1750 register struct sockaddr_iso *isoaddr1, *isoaddr2; 1751 1752 isoaddr1 = mtod(nam, struct sockaddr_iso *); 1753 isoaddr2 = mtod(haddr->had_nam, struct sockaddr_iso *); 1754 if (isoaddr1->siso_family == AF_ISO && 1755 isoaddr1->siso_nlen > 0 && 1756 isoaddr1->siso_nlen == isoaddr2->siso_nlen && 1757 SAME_ISOADDR(isoaddr1, isoaddr2)) 1758 return (1); 1759 break; 1760 } 1761#endif /* ISO */ 1762 default: 1763 break; 1764 }; 1765 return (0); 1766} 1767 1768static nfsuint64 nfs_nullcookie = { 0, 0 }; 1769/* 1770 * This function finds the directory cookie that corresponds to the 1771 * logical byte offset given. 1772 */ 1773nfsuint64 * 1774nfs_getcookie(np, off, add) 1775 register struct nfsnode *np; 1776 off_t off; 1777 int add; 1778{ 1779 register struct nfsdmap *dp, *dp2; 1780 register int pos; 1781 1782 pos = off / NFS_DIRBLKSIZ; 1783 if (pos == 0) { 1784#ifdef DIAGNOSTIC 1785 if (add) 1786 panic("nfs getcookie add at 0"); 1787#endif 1788 return (&nfs_nullcookie); 1789 } 1790 pos--; 1791 dp = np->n_cookies.lh_first; 1792 if (!dp) { 1793 if (add) { 1794 MALLOC(dp, struct nfsdmap *, sizeof (struct nfsdmap), 1795 M_NFSDIROFF, M_WAITOK); 1796 dp->ndm_eocookie = 0; 1797 LIST_INSERT_HEAD(&np->n_cookies, dp, ndm_list); 1798 } else 1799 return ((nfsuint64 *)0); 1800 } 1801 while (pos >= NFSNUMCOOKIES) { 1802 pos -= NFSNUMCOOKIES; 1803 if (dp->ndm_list.le_next) { 1804 if (!add && dp->ndm_eocookie < NFSNUMCOOKIES && 1805 pos >= dp->ndm_eocookie) 1806 return ((nfsuint64 *)0); 1807 dp = dp->ndm_list.le_next; 1808 } else if (add) { 1809 MALLOC(dp2, struct nfsdmap *, sizeof (struct nfsdmap), 1810 M_NFSDIROFF, M_WAITOK); 1811 dp2->ndm_eocookie = 0; 1812 LIST_INSERT_AFTER(dp, dp2, ndm_list); 1813 dp = dp2; 1814 } else 1815 return ((nfsuint64 *)0); 1816 } 1817 if (pos >= dp->ndm_eocookie) { 1818 if (add) 1819 dp->ndm_eocookie = pos + 1; 1820 else 1821 return ((nfsuint64 *)0); 1822 } 1823 return (&dp->ndm_cookies[pos]); 1824} 1825 1826/* 1827 * Invalidate cached directory information, except for the actual directory 1828 * blocks (which are invalidated separately). 1829 * Done mainly to avoid the use of stale offset cookies. 1830 */ 1831void 1832nfs_invaldir(vp) 1833 register struct vnode *vp; 1834{ 1835 register struct nfsnode *np = VTONFS(vp); 1836 1837#ifdef DIAGNOSTIC 1838 if (vp->v_type != VDIR) 1839 panic("nfs: invaldir not dir"); 1840#endif 1841 np->n_direofoffset = 0; 1842 np->n_cookieverf.nfsuquad[0] = 0; 1843 np->n_cookieverf.nfsuquad[1] = 0; 1844 if (np->n_cookies.lh_first) 1845 np->n_cookies.lh_first->ndm_eocookie = 0; 1846} 1847 1848/* 1849 * The write verifier has changed (probably due to a server reboot), so all 1850 * B_NEEDCOMMIT blocks will have to be written again. Since they are on the 1851 * dirty block list as B_DELWRI, all this takes is clearing the B_NEEDCOMMIT 1852 * flag. Once done the new write verifier can be set for the mount point. 1853 */ 1854void 1855nfs_clearcommit(mp) 1856 struct mount *mp; 1857{ 1858 register struct vnode *vp, *nvp; 1859 register struct buf *bp, *nbp; 1860 int s; 1861 1862 s = splbio(); 1863loop: 1864 for (vp = mp->mnt_vnodelist.lh_first; vp; vp = nvp) { 1865 if (vp->v_mount != mp) /* Paranoia */ 1866 goto loop; 1867 nvp = vp->v_mntvnodes.le_next; 1868 for (bp = vp->v_dirtyblkhd.lh_first; bp; bp = nbp) { 1869 nbp = bp->b_vnbufs.le_next; 1870 if ((bp->b_flags & (B_BUSY | B_DELWRI | B_NEEDCOMMIT)) 1871 == (B_DELWRI | B_NEEDCOMMIT)) 1872 bp->b_flags &= ~B_NEEDCOMMIT; 1873 } 1874 } 1875 splx(s); 1876} 1877 1878/* 1879 * Map errnos to NFS error numbers. For Version 3 also filter out error 1880 * numbers not specified for the associated procedure. 1881 */ 1882int 1883nfsrv_errmap(nd, err) 1884 struct nfsrv_descript *nd; 1885 register int err; 1886{ 1887 register short *defaulterrp, *errp; 1888 1889 if (nd->nd_flag & ND_NFSV3) { 1890 if (nd->nd_procnum <= NFSPROC_COMMIT) { 1891 errp = defaulterrp = nfsrv_v3errmap[nd->nd_procnum]; 1892 while (*++errp) { 1893 if (*errp == err) 1894 return (err); 1895 else if (*errp > err) 1896 break; 1897 } 1898 return ((int)*defaulterrp); 1899 } else 1900 return (err & 0xffff); 1901 } 1902 if (err <= ELAST) 1903 return ((int)nfsrv_v2errmap[err - 1]); 1904 return (NFSERR_IO); 1905} 1906 1907int 1908nfsrv_vmio(struct vnode *vp) { 1909 vm_object_t object; 1910 1911 if ((vp == NULL) || (vp->v_type != VREG)) 1912 return 1; 1913 1914retry: 1915 if ((vp->v_flag & VVMIO) == 0) { 1916 struct vattr vat; 1917 struct proc *p = curproc; 1918 1919 if (VOP_GETATTR(vp, &vat, p->p_ucred, p) != 0) 1920 panic("nfsrv_vmio: VOP_GETATTR failed"); 1921 1922 (void) vnode_pager_alloc(vp, vat.va_size, 0, 0); 1923 1924 vp->v_flag |= VVMIO; 1925 } else { 1926 if ((object = vp->v_object) && 1927 (object->flags & OBJ_DEAD)) { 1928 tsleep(object, PVM, "nfdead", 0); 1929 goto retry; 1930 } 1931 if (!object) 1932 panic("nfsrv_vmio: VMIO object missing"); 1933 vm_object_reference(object); 1934 } 1935 return 0; 1936} 1937int 1938nfsrv_vput(struct vnode *vp) { 1939 if ((vp->v_flag & VVMIO) && vp->v_object) { 1940 vput(vp); 1941 vm_object_deallocate(vp->v_object); 1942 } else { 1943 vput(vp); 1944 } 1945 return 0; 1946} 1947int 1948nfsrv_vrele(struct vnode *vp) { 1949 if ((vp->v_flag & VVMIO) && vp->v_object) { 1950 vrele(vp); 1951 vm_object_deallocate(vp->v_object); 1952 } else { 1953 vrele(vp); 1954 } 1955 return 0; 1956} 1957