nfs_srvsubs.c revision 12662
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 1.24 1995/10/29 15:33:08 phk 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/vm_param.h> 63#include <vm/vm_object.h> 64#include <vm/vm_extern.h> 65#include <vm/vnode_pager.h> 66 67#include <nfs/rpcv2.h> 68#include <nfs/nfsproto.h> 69#include <nfs/nfsnode.h> 70#include <nfs/nfs.h> 71#include <nfs/xdr_subs.h> 72#include <nfs/nfsm_subs.h> 73#include <nfs/nfsmount.h> 74#include <nfs/nqnfs.h> 75#include <nfs/nfsrtt.h> 76 77#include <miscfs/specfs/specdev.h> 78 79#include <netinet/in.h> 80#ifdef ISO 81#include <netiso/iso.h> 82#endif 83 84/* 85 * Data items converted to xdr at startup, since they are constant 86 * This is kinda hokey, but may save a little time doing byte swaps 87 */ 88u_long nfs_xdrneg1; 89u_long rpc_call, rpc_vers, rpc_reply, rpc_msgdenied, rpc_autherr, 90 rpc_mismatch, rpc_auth_unix, rpc_msgaccepted, 91 rpc_auth_kerb; 92u_long nfs_prog, nqnfs_prog, nfs_true, nfs_false; 93 94/* And other global data */ 95static u_long nfs_xid = 0; 96enum vtype nv2tov_type[8] = { VNON, VREG, VDIR, VBLK, VCHR, VLNK, VNON, VNON }; 97enum vtype nv3tov_type[8]={ VNON, VREG, VDIR, VBLK, VCHR, VLNK, VSOCK, VFIFO }; 98int nfs_ticks; 99 100struct nfs_reqq nfs_reqq; 101struct nfssvc_sockhead nfssvc_sockhead; 102int nfssvc_sockhead_flag; 103struct nfsd_head nfsd_head; 104int nfsd_head_flag; 105struct nfs_bufq nfs_bufq; 106struct nqtimerhead nqtimerhead; 107struct nqfhhashhead *nqfhhashtbl; 108u_long nqfhhash; 109 110/* 111 * Mapping of old NFS Version 2 RPC numbers to generic numbers. 112 */ 113int nfsv3_procid[NFS_NPROCS] = { 114 NFSPROC_NULL, 115 NFSPROC_GETATTR, 116 NFSPROC_SETATTR, 117 NFSPROC_NOOP, 118 NFSPROC_LOOKUP, 119 NFSPROC_READLINK, 120 NFSPROC_READ, 121 NFSPROC_NOOP, 122 NFSPROC_WRITE, 123 NFSPROC_CREATE, 124 NFSPROC_REMOVE, 125 NFSPROC_RENAME, 126 NFSPROC_LINK, 127 NFSPROC_SYMLINK, 128 NFSPROC_MKDIR, 129 NFSPROC_RMDIR, 130 NFSPROC_READDIR, 131 NFSPROC_FSSTAT, 132 NFSPROC_NOOP, 133 NFSPROC_NOOP, 134 NFSPROC_NOOP, 135 NFSPROC_NOOP, 136 NFSPROC_NOOP, 137 NFSPROC_NOOP, 138 NFSPROC_NOOP, 139 NFSPROC_NOOP 140}; 141 142/* 143 * and the reverse mapping from generic to Version 2 procedure numbers 144 */ 145int nfsv2_procid[NFS_NPROCS] = { 146 NFSV2PROC_NULL, 147 NFSV2PROC_GETATTR, 148 NFSV2PROC_SETATTR, 149 NFSV2PROC_LOOKUP, 150 NFSV2PROC_NOOP, 151 NFSV2PROC_READLINK, 152 NFSV2PROC_READ, 153 NFSV2PROC_WRITE, 154 NFSV2PROC_CREATE, 155 NFSV2PROC_MKDIR, 156 NFSV2PROC_SYMLINK, 157 NFSV2PROC_CREATE, 158 NFSV2PROC_REMOVE, 159 NFSV2PROC_RMDIR, 160 NFSV2PROC_RENAME, 161 NFSV2PROC_LINK, 162 NFSV2PROC_READDIR, 163 NFSV2PROC_NOOP, 164 NFSV2PROC_STATFS, 165 NFSV2PROC_NOOP, 166 NFSV2PROC_NOOP, 167 NFSV2PROC_NOOP, 168 NFSV2PROC_NOOP, 169 NFSV2PROC_NOOP, 170 NFSV2PROC_NOOP, 171 NFSV2PROC_NOOP, 172}; 173 174/* 175 * Maps errno values to nfs error numbers. 176 * Use NFSERR_IO as the catch all for ones not specifically defined in 177 * RFC 1094. 178 */ 179static u_char nfsrv_v2errmap[ELAST] = { 180 NFSERR_PERM, NFSERR_NOENT, NFSERR_IO, NFSERR_IO, NFSERR_IO, 181 NFSERR_NXIO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 182 NFSERR_IO, NFSERR_IO, NFSERR_ACCES, NFSERR_IO, NFSERR_IO, 183 NFSERR_IO, NFSERR_EXIST, NFSERR_IO, NFSERR_NODEV, NFSERR_NOTDIR, 184 NFSERR_ISDIR, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 185 NFSERR_IO, NFSERR_FBIG, NFSERR_NOSPC, NFSERR_IO, NFSERR_ROFS, 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_IO, NFSERR_IO, NFSERR_IO, 190 NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 191 NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 192 NFSERR_IO, NFSERR_IO, NFSERR_NAMETOL, NFSERR_IO, NFSERR_IO, 193 NFSERR_NOTEMPTY, NFSERR_IO, NFSERR_IO, NFSERR_DQUOT, NFSERR_STALE, 194 NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 195 NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, 196 NFSERR_IO, 197}; 198 199/* 200 * Maps errno values to nfs error numbers. 201 * Although it is not obvious whether or not NFS clients really care if 202 * a returned error value is in the specified list for the procedure, the 203 * safest thing to do is filter them appropriately. For Version 2, the 204 * X/Open XNFS document is the only specification that defines error values 205 * for each RPC (The RFC simply lists all possible error values for all RPCs), 206 * so I have decided to not do this for Version 2. 207 * The first entry is the default error return and the rest are the valid 208 * errors for that RPC in increasing numeric order. 209 */ 210static short nfsv3err_null[] = { 211 0, 212 0, 213}; 214 215static short nfsv3err_getattr[] = { 216 NFSERR_IO, 217 NFSERR_IO, 218 NFSERR_STALE, 219 NFSERR_BADHANDLE, 220 NFSERR_SERVERFAULT, 221 0, 222}; 223 224static short nfsv3err_setattr[] = { 225 NFSERR_IO, 226 NFSERR_PERM, 227 NFSERR_IO, 228 NFSERR_ACCES, 229 NFSERR_INVAL, 230 NFSERR_NOSPC, 231 NFSERR_ROFS, 232 NFSERR_DQUOT, 233 NFSERR_STALE, 234 NFSERR_BADHANDLE, 235 NFSERR_NOT_SYNC, 236 NFSERR_SERVERFAULT, 237 0, 238}; 239 240static short nfsv3err_lookup[] = { 241 NFSERR_IO, 242 NFSERR_NOENT, 243 NFSERR_IO, 244 NFSERR_ACCES, 245 NFSERR_NOTDIR, 246 NFSERR_NAMETOL, 247 NFSERR_STALE, 248 NFSERR_BADHANDLE, 249 NFSERR_SERVERFAULT, 250 0, 251}; 252 253static short nfsv3err_access[] = { 254 NFSERR_IO, 255 NFSERR_IO, 256 NFSERR_STALE, 257 NFSERR_BADHANDLE, 258 NFSERR_SERVERFAULT, 259 0, 260}; 261 262static short nfsv3err_readlink[] = { 263 NFSERR_IO, 264 NFSERR_IO, 265 NFSERR_ACCES, 266 NFSERR_INVAL, 267 NFSERR_STALE, 268 NFSERR_BADHANDLE, 269 NFSERR_NOTSUPP, 270 NFSERR_SERVERFAULT, 271 0, 272}; 273 274static short nfsv3err_read[] = { 275 NFSERR_IO, 276 NFSERR_IO, 277 NFSERR_NXIO, 278 NFSERR_ACCES, 279 NFSERR_INVAL, 280 NFSERR_STALE, 281 NFSERR_BADHANDLE, 282 NFSERR_SERVERFAULT, 283 0, 284}; 285 286static short nfsv3err_write[] = { 287 NFSERR_IO, 288 NFSERR_IO, 289 NFSERR_ACCES, 290 NFSERR_INVAL, 291 NFSERR_FBIG, 292 NFSERR_NOSPC, 293 NFSERR_ROFS, 294 NFSERR_DQUOT, 295 NFSERR_STALE, 296 NFSERR_BADHANDLE, 297 NFSERR_SERVERFAULT, 298 0, 299}; 300 301static short nfsv3err_create[] = { 302 NFSERR_IO, 303 NFSERR_IO, 304 NFSERR_ACCES, 305 NFSERR_EXIST, 306 NFSERR_NOTDIR, 307 NFSERR_NOSPC, 308 NFSERR_ROFS, 309 NFSERR_NAMETOL, 310 NFSERR_DQUOT, 311 NFSERR_STALE, 312 NFSERR_BADHANDLE, 313 NFSERR_NOTSUPP, 314 NFSERR_SERVERFAULT, 315 0, 316}; 317 318static short nfsv3err_mkdir[] = { 319 NFSERR_IO, 320 NFSERR_IO, 321 NFSERR_ACCES, 322 NFSERR_EXIST, 323 NFSERR_NOTDIR, 324 NFSERR_NOSPC, 325 NFSERR_ROFS, 326 NFSERR_NAMETOL, 327 NFSERR_DQUOT, 328 NFSERR_STALE, 329 NFSERR_BADHANDLE, 330 NFSERR_NOTSUPP, 331 NFSERR_SERVERFAULT, 332 0, 333}; 334 335static short nfsv3err_symlink[] = { 336 NFSERR_IO, 337 NFSERR_IO, 338 NFSERR_ACCES, 339 NFSERR_EXIST, 340 NFSERR_NOTDIR, 341 NFSERR_NOSPC, 342 NFSERR_ROFS, 343 NFSERR_NAMETOL, 344 NFSERR_DQUOT, 345 NFSERR_STALE, 346 NFSERR_BADHANDLE, 347 NFSERR_NOTSUPP, 348 NFSERR_SERVERFAULT, 349 0, 350}; 351 352static short nfsv3err_mknod[] = { 353 NFSERR_IO, 354 NFSERR_IO, 355 NFSERR_ACCES, 356 NFSERR_EXIST, 357 NFSERR_NOTDIR, 358 NFSERR_NOSPC, 359 NFSERR_ROFS, 360 NFSERR_NAMETOL, 361 NFSERR_DQUOT, 362 NFSERR_STALE, 363 NFSERR_BADHANDLE, 364 NFSERR_NOTSUPP, 365 NFSERR_SERVERFAULT, 366 NFSERR_BADTYPE, 367 0, 368}; 369 370static short nfsv3err_remove[] = { 371 NFSERR_IO, 372 NFSERR_NOENT, 373 NFSERR_IO, 374 NFSERR_ACCES, 375 NFSERR_NOTDIR, 376 NFSERR_ROFS, 377 NFSERR_NAMETOL, 378 NFSERR_STALE, 379 NFSERR_BADHANDLE, 380 NFSERR_SERVERFAULT, 381 0, 382}; 383 384static short nfsv3err_rmdir[] = { 385 NFSERR_IO, 386 NFSERR_NOENT, 387 NFSERR_IO, 388 NFSERR_ACCES, 389 NFSERR_EXIST, 390 NFSERR_NOTDIR, 391 NFSERR_INVAL, 392 NFSERR_ROFS, 393 NFSERR_NAMETOL, 394 NFSERR_NOTEMPTY, 395 NFSERR_STALE, 396 NFSERR_BADHANDLE, 397 NFSERR_NOTSUPP, 398 NFSERR_SERVERFAULT, 399 0, 400}; 401 402static short nfsv3err_rename[] = { 403 NFSERR_IO, 404 NFSERR_NOENT, 405 NFSERR_IO, 406 NFSERR_ACCES, 407 NFSERR_EXIST, 408 NFSERR_XDEV, 409 NFSERR_NOTDIR, 410 NFSERR_ISDIR, 411 NFSERR_INVAL, 412 NFSERR_NOSPC, 413 NFSERR_ROFS, 414 NFSERR_MLINK, 415 NFSERR_NAMETOL, 416 NFSERR_NOTEMPTY, 417 NFSERR_DQUOT, 418 NFSERR_STALE, 419 NFSERR_BADHANDLE, 420 NFSERR_NOTSUPP, 421 NFSERR_SERVERFAULT, 422 0, 423}; 424 425static short nfsv3err_link[] = { 426 NFSERR_IO, 427 NFSERR_IO, 428 NFSERR_ACCES, 429 NFSERR_EXIST, 430 NFSERR_XDEV, 431 NFSERR_NOTDIR, 432 NFSERR_INVAL, 433 NFSERR_NOSPC, 434 NFSERR_ROFS, 435 NFSERR_MLINK, 436 NFSERR_NAMETOL, 437 NFSERR_DQUOT, 438 NFSERR_STALE, 439 NFSERR_BADHANDLE, 440 NFSERR_NOTSUPP, 441 NFSERR_SERVERFAULT, 442 0, 443}; 444 445static short nfsv3err_readdir[] = { 446 NFSERR_IO, 447 NFSERR_IO, 448 NFSERR_ACCES, 449 NFSERR_NOTDIR, 450 NFSERR_STALE, 451 NFSERR_BADHANDLE, 452 NFSERR_BAD_COOKIE, 453 NFSERR_TOOSMALL, 454 NFSERR_SERVERFAULT, 455 0, 456}; 457 458static short nfsv3err_readdirplus[] = { 459 NFSERR_IO, 460 NFSERR_IO, 461 NFSERR_ACCES, 462 NFSERR_NOTDIR, 463 NFSERR_STALE, 464 NFSERR_BADHANDLE, 465 NFSERR_BAD_COOKIE, 466 NFSERR_NOTSUPP, 467 NFSERR_TOOSMALL, 468 NFSERR_SERVERFAULT, 469 0, 470}; 471 472static short nfsv3err_fsstat[] = { 473 NFSERR_IO, 474 NFSERR_IO, 475 NFSERR_STALE, 476 NFSERR_BADHANDLE, 477 NFSERR_SERVERFAULT, 478 0, 479}; 480 481static short nfsv3err_fsinfo[] = { 482 NFSERR_STALE, 483 NFSERR_STALE, 484 NFSERR_BADHANDLE, 485 NFSERR_SERVERFAULT, 486 0, 487}; 488 489static short nfsv3err_pathconf[] = { 490 NFSERR_STALE, 491 NFSERR_STALE, 492 NFSERR_BADHANDLE, 493 NFSERR_SERVERFAULT, 494 0, 495}; 496 497static short nfsv3err_commit[] = { 498 NFSERR_IO, 499 NFSERR_IO, 500 NFSERR_STALE, 501 NFSERR_BADHANDLE, 502 NFSERR_SERVERFAULT, 503 0, 504}; 505 506static short *nfsrv_v3errmap[] = { 507 nfsv3err_null, 508 nfsv3err_getattr, 509 nfsv3err_setattr, 510 nfsv3err_lookup, 511 nfsv3err_access, 512 nfsv3err_readlink, 513 nfsv3err_read, 514 nfsv3err_write, 515 nfsv3err_create, 516 nfsv3err_mkdir, 517 nfsv3err_symlink, 518 nfsv3err_mknod, 519 nfsv3err_remove, 520 nfsv3err_rmdir, 521 nfsv3err_rename, 522 nfsv3err_link, 523 nfsv3err_readdir, 524 nfsv3err_readdirplus, 525 nfsv3err_fsstat, 526 nfsv3err_fsinfo, 527 nfsv3err_pathconf, 528 nfsv3err_commit, 529}; 530 531extern struct proc *nfs_iodwant[NFS_MAXASYNCDAEMON]; 532extern struct nfsrtt nfsrtt; 533extern time_t nqnfsstarttime; 534extern int nqsrv_clockskew; 535extern int nqsrv_writeslack; 536extern int nqsrv_maxlease; 537extern struct nfsstats nfsstats; 538extern int nqnfs_piggy[NFS_NPROCS]; 539extern nfstype nfsv2_type[9]; 540extern nfstype nfsv3_type[9]; 541extern struct nfsnodehashhead *nfsnodehashtbl; 542extern u_long nfsnodehash; 543 544#ifdef VFS_LKM 545struct getfh_args; 546extern int getfh(struct proc *, struct getfh_args *, int *); 547struct nfssvc_args; 548extern int nfssvc(struct proc *, struct nfssvc_args *, int *); 549#endif 550 551LIST_HEAD(nfsnodehashhead, nfsnode); 552 553/* 554 * Create the header for an rpc request packet 555 * The hsiz is the size of the rest of the nfs request header. 556 * (just used to decide if a cluster is a good idea) 557 */ 558struct mbuf * 559nfsm_reqh(vp, procid, hsiz, bposp) 560 struct vnode *vp; 561 u_long procid; 562 int hsiz; 563 caddr_t *bposp; 564{ 565 register struct mbuf *mb; 566 register u_long *tl; 567 register caddr_t bpos; 568 struct mbuf *mb2; 569 struct nfsmount *nmp; 570 int nqflag; 571 572 MGET(mb, M_WAIT, MT_DATA); 573 if (hsiz >= MINCLSIZE) 574 MCLGET(mb, M_WAIT); 575 mb->m_len = 0; 576 bpos = mtod(mb, caddr_t); 577 578 /* 579 * For NQNFS, add lease request. 580 */ 581 if (vp) { 582 nmp = VFSTONFS(vp->v_mount); 583 if (nmp->nm_flag & NFSMNT_NQNFS) { 584 nqflag = NQNFS_NEEDLEASE(vp, procid); 585 if (nqflag) { 586 nfsm_build(tl, u_long *, 2*NFSX_UNSIGNED); 587 *tl++ = txdr_unsigned(nqflag); 588 *tl = txdr_unsigned(nmp->nm_leaseterm); 589 } else { 590 nfsm_build(tl, u_long *, NFSX_UNSIGNED); 591 *tl = 0; 592 } 593 } 594 } 595 /* Finally, return values */ 596 *bposp = bpos; 597 return (mb); 598} 599 600/* 601 * Build the RPC header and fill in the authorization info. 602 * The authorization string argument is only used when the credentials 603 * come from outside of the kernel. 604 * Returns the head of the mbuf list. 605 */ 606struct mbuf * 607nfsm_rpchead(cr, nmflag, procid, auth_type, auth_len, auth_str, verf_len, 608 verf_str, mrest, mrest_len, mbp, xidp) 609 register struct ucred *cr; 610 int nmflag; 611 int procid; 612 int auth_type; 613 int auth_len; 614 char *auth_str; 615 int verf_len; 616 char *verf_str; 617 struct mbuf *mrest; 618 int mrest_len; 619 struct mbuf **mbp; 620 u_long *xidp; 621{ 622 register struct mbuf *mb; 623 register u_long *tl; 624 register caddr_t bpos; 625 register int i; 626 struct mbuf *mreq, *mb2; 627 int siz, grpsiz, authsiz; 628 629 authsiz = nfsm_rndup(auth_len); 630 MGETHDR(mb, M_WAIT, MT_DATA); 631 if ((authsiz + 10 * NFSX_UNSIGNED) >= MINCLSIZE) { 632 MCLGET(mb, M_WAIT); 633 } else if ((authsiz + 10 * NFSX_UNSIGNED) < MHLEN) { 634 MH_ALIGN(mb, authsiz + 10 * NFSX_UNSIGNED); 635 } else { 636 MH_ALIGN(mb, 8 * NFSX_UNSIGNED); 637 } 638 mb->m_len = 0; 639 mreq = mb; 640 bpos = mtod(mb, caddr_t); 641 642 /* 643 * First the RPC header. 644 */ 645 nfsm_build(tl, u_long *, 8 * NFSX_UNSIGNED); 646 if (++nfs_xid == 0) 647 nfs_xid++; 648 *tl++ = *xidp = txdr_unsigned(nfs_xid); 649 *tl++ = rpc_call; 650 *tl++ = rpc_vers; 651 if (nmflag & NFSMNT_NQNFS) { 652 *tl++ = txdr_unsigned(NQNFS_PROG); 653 *tl++ = txdr_unsigned(NQNFS_VER3); 654 } else { 655 *tl++ = txdr_unsigned(NFS_PROG); 656 if (nmflag & NFSMNT_NFSV3) 657 *tl++ = txdr_unsigned(NFS_VER3); 658 else 659 *tl++ = txdr_unsigned(NFS_VER2); 660 } 661 if (nmflag & NFSMNT_NFSV3) 662 *tl++ = txdr_unsigned(procid); 663 else 664 *tl++ = txdr_unsigned(nfsv2_procid[procid]); 665 666 /* 667 * And then the authorization cred. 668 */ 669 *tl++ = txdr_unsigned(auth_type); 670 *tl = txdr_unsigned(authsiz); 671 switch (auth_type) { 672 case RPCAUTH_UNIX: 673 nfsm_build(tl, u_long *, auth_len); 674 *tl++ = 0; /* stamp ?? */ 675 *tl++ = 0; /* NULL hostname */ 676 *tl++ = txdr_unsigned(cr->cr_uid); 677 *tl++ = txdr_unsigned(cr->cr_groups[0]); 678 grpsiz = (auth_len >> 2) - 5; 679 *tl++ = txdr_unsigned(grpsiz); 680 for (i = 1; i <= grpsiz; i++) 681 *tl++ = txdr_unsigned(cr->cr_groups[i]); 682 break; 683 case RPCAUTH_KERB4: 684 siz = auth_len; 685 while (siz > 0) { 686 if (M_TRAILINGSPACE(mb) == 0) { 687 MGET(mb2, M_WAIT, MT_DATA); 688 if (siz >= MINCLSIZE) 689 MCLGET(mb2, M_WAIT); 690 mb->m_next = mb2; 691 mb = mb2; 692 mb->m_len = 0; 693 bpos = mtod(mb, caddr_t); 694 } 695 i = min(siz, M_TRAILINGSPACE(mb)); 696 bcopy(auth_str, bpos, i); 697 mb->m_len += i; 698 auth_str += i; 699 bpos += i; 700 siz -= i; 701 } 702 if ((siz = (nfsm_rndup(auth_len) - auth_len)) > 0) { 703 for (i = 0; i < siz; i++) 704 *bpos++ = '\0'; 705 mb->m_len += siz; 706 } 707 break; 708 }; 709 710 /* 711 * And the verifier... 712 */ 713 nfsm_build(tl, u_long *, 2 * NFSX_UNSIGNED); 714 if (verf_str) { 715 *tl++ = txdr_unsigned(RPCAUTH_KERB4); 716 *tl = txdr_unsigned(verf_len); 717 siz = verf_len; 718 while (siz > 0) { 719 if (M_TRAILINGSPACE(mb) == 0) { 720 MGET(mb2, M_WAIT, MT_DATA); 721 if (siz >= MINCLSIZE) 722 MCLGET(mb2, M_WAIT); 723 mb->m_next = mb2; 724 mb = mb2; 725 mb->m_len = 0; 726 bpos = mtod(mb, caddr_t); 727 } 728 i = min(siz, M_TRAILINGSPACE(mb)); 729 bcopy(verf_str, bpos, i); 730 mb->m_len += i; 731 verf_str += i; 732 bpos += i; 733 siz -= i; 734 } 735 if ((siz = (nfsm_rndup(verf_len) - verf_len)) > 0) { 736 for (i = 0; i < siz; i++) 737 *bpos++ = '\0'; 738 mb->m_len += siz; 739 } 740 } else { 741 *tl++ = txdr_unsigned(RPCAUTH_NULL); 742 *tl = 0; 743 } 744 mb->m_next = mrest; 745 mreq->m_pkthdr.len = authsiz + 10 * NFSX_UNSIGNED + mrest_len; 746 mreq->m_pkthdr.rcvif = (struct ifnet *)0; 747 *mbp = mb; 748 return (mreq); 749} 750 751/* 752 * copies mbuf chain to the uio scatter/gather list 753 */ 754int 755nfsm_mbuftouio(mrep, uiop, siz, dpos) 756 struct mbuf **mrep; 757 register struct uio *uiop; 758 int siz; 759 caddr_t *dpos; 760{ 761 register char *mbufcp, *uiocp; 762 register int xfer, left, len; 763 register struct mbuf *mp; 764 long uiosiz, rem; 765 int error = 0; 766 767 mp = *mrep; 768 mbufcp = *dpos; 769 len = mtod(mp, caddr_t)+mp->m_len-mbufcp; 770 rem = nfsm_rndup(siz)-siz; 771 while (siz > 0) { 772 if (uiop->uio_iovcnt <= 0 || uiop->uio_iov == NULL) 773 return (EFBIG); 774 left = uiop->uio_iov->iov_len; 775 uiocp = uiop->uio_iov->iov_base; 776 if (left > siz) 777 left = siz; 778 uiosiz = left; 779 while (left > 0) { 780 while (len == 0) { 781 mp = mp->m_next; 782 if (mp == NULL) 783 return (EBADRPC); 784 mbufcp = mtod(mp, caddr_t); 785 len = mp->m_len; 786 } 787 xfer = (left > len) ? len : left; 788#ifdef notdef 789 /* Not Yet.. */ 790 if (uiop->uio_iov->iov_op != NULL) 791 (*(uiop->uio_iov->iov_op)) 792 (mbufcp, uiocp, xfer); 793 else 794#endif 795 if (uiop->uio_segflg == UIO_SYSSPACE) 796 bcopy(mbufcp, uiocp, xfer); 797 else 798 copyout(mbufcp, uiocp, xfer); 799 left -= xfer; 800 len -= xfer; 801 mbufcp += xfer; 802 uiocp += xfer; 803 uiop->uio_offset += xfer; 804 uiop->uio_resid -= xfer; 805 } 806 if (uiop->uio_iov->iov_len <= siz) { 807 uiop->uio_iovcnt--; 808 uiop->uio_iov++; 809 } else { 810 uiop->uio_iov->iov_base += uiosiz; 811 uiop->uio_iov->iov_len -= uiosiz; 812 } 813 siz -= uiosiz; 814 } 815 *dpos = mbufcp; 816 *mrep = mp; 817 if (rem > 0) { 818 if (len < rem) 819 error = nfs_adv(mrep, dpos, rem, len); 820 else 821 *dpos += rem; 822 } 823 return (error); 824} 825 826/* 827 * copies a uio scatter/gather list to an mbuf chain... 828 */ 829int 830nfsm_uiotombuf(uiop, mq, siz, bpos) 831 register struct uio *uiop; 832 struct mbuf **mq; 833 int siz; 834 caddr_t *bpos; 835{ 836 register char *uiocp; 837 register struct mbuf *mp, *mp2; 838 register int xfer, left, mlen; 839 int uiosiz, clflg, rem; 840 char *cp; 841 842 if (siz > MLEN) /* or should it >= MCLBYTES ?? */ 843 clflg = 1; 844 else 845 clflg = 0; 846 rem = nfsm_rndup(siz)-siz; 847 mp = mp2 = *mq; 848 while (siz > 0) { 849 if (uiop->uio_iovcnt <= 0 || uiop->uio_iov == NULL) 850 return (EINVAL); 851 left = uiop->uio_iov->iov_len; 852 uiocp = uiop->uio_iov->iov_base; 853 if (left > siz) 854 left = siz; 855 uiosiz = left; 856 while (left > 0) { 857 mlen = M_TRAILINGSPACE(mp); 858 if (mlen == 0) { 859 MGET(mp, M_WAIT, MT_DATA); 860 if (clflg) 861 MCLGET(mp, M_WAIT); 862 mp->m_len = 0; 863 mp2->m_next = mp; 864 mp2 = mp; 865 mlen = M_TRAILINGSPACE(mp); 866 } 867 xfer = (left > mlen) ? mlen : left; 868#ifdef notdef 869 /* Not Yet.. */ 870 if (uiop->uio_iov->iov_op != NULL) 871 (*(uiop->uio_iov->iov_op)) 872 (uiocp, mtod(mp, caddr_t)+mp->m_len, xfer); 873 else 874#endif 875 if (uiop->uio_segflg == UIO_SYSSPACE) 876 bcopy(uiocp, mtod(mp, caddr_t)+mp->m_len, xfer); 877 else 878 copyin(uiocp, mtod(mp, caddr_t)+mp->m_len, xfer); 879 mp->m_len += xfer; 880 left -= xfer; 881 uiocp += xfer; 882 uiop->uio_offset += xfer; 883 uiop->uio_resid -= xfer; 884 } 885 if (uiop->uio_iov->iov_len <= siz) { 886 uiop->uio_iovcnt--; 887 uiop->uio_iov++; 888 } else { 889 uiop->uio_iov->iov_base += uiosiz; 890 uiop->uio_iov->iov_len -= uiosiz; 891 } 892 siz -= uiosiz; 893 } 894 if (rem > 0) { 895 if (rem > M_TRAILINGSPACE(mp)) { 896 MGET(mp, M_WAIT, MT_DATA); 897 mp->m_len = 0; 898 mp2->m_next = mp; 899 } 900 cp = mtod(mp, caddr_t)+mp->m_len; 901 for (left = 0; left < rem; left++) 902 *cp++ = '\0'; 903 mp->m_len += rem; 904 *bpos = cp; 905 } else 906 *bpos = mtod(mp, caddr_t)+mp->m_len; 907 *mq = mp; 908 return (0); 909} 910 911/* 912 * Help break down an mbuf chain by setting the first siz bytes contiguous 913 * pointed to by returned val. 914 * This is used by the macros nfsm_dissect and nfsm_dissecton for tough 915 * cases. (The macros use the vars. dpos and dpos2) 916 */ 917int 918nfsm_disct(mdp, dposp, siz, left, cp2) 919 struct mbuf **mdp; 920 caddr_t *dposp; 921 int siz; 922 int left; 923 caddr_t *cp2; 924{ 925 register struct mbuf *mp, *mp2; 926 register int siz2, xfer; 927 register caddr_t p; 928 929 mp = *mdp; 930 while (left == 0) { 931 *mdp = mp = mp->m_next; 932 if (mp == NULL) 933 return (EBADRPC); 934 left = mp->m_len; 935 *dposp = mtod(mp, caddr_t); 936 } 937 if (left >= siz) { 938 *cp2 = *dposp; 939 *dposp += siz; 940 } else if (mp->m_next == NULL) { 941 return (EBADRPC); 942 } else if (siz > MHLEN) { 943 panic("nfs S too big"); 944 } else { 945 MGET(mp2, M_WAIT, MT_DATA); 946 mp2->m_next = mp->m_next; 947 mp->m_next = mp2; 948 mp->m_len -= left; 949 mp = mp2; 950 *cp2 = p = mtod(mp, caddr_t); 951 bcopy(*dposp, p, left); /* Copy what was left */ 952 siz2 = siz-left; 953 p += left; 954 mp2 = mp->m_next; 955 /* Loop around copying up the siz2 bytes */ 956 while (siz2 > 0) { 957 if (mp2 == NULL) 958 return (EBADRPC); 959 xfer = (siz2 > mp2->m_len) ? mp2->m_len : siz2; 960 if (xfer > 0) { 961 bcopy(mtod(mp2, caddr_t), p, xfer); 962 NFSMADV(mp2, xfer); 963 mp2->m_len -= xfer; 964 p += xfer; 965 siz2 -= xfer; 966 } 967 if (siz2 > 0) 968 mp2 = mp2->m_next; 969 } 970 mp->m_len = siz; 971 *mdp = mp2; 972 *dposp = mtod(mp2, caddr_t); 973 } 974 return (0); 975} 976 977/* 978 * Advance the position in the mbuf chain. 979 */ 980int 981nfs_adv(mdp, dposp, offs, left) 982 struct mbuf **mdp; 983 caddr_t *dposp; 984 int offs; 985 int left; 986{ 987 register struct mbuf *m; 988 register int s; 989 990 m = *mdp; 991 s = left; 992 while (s < offs) { 993 offs -= s; 994 m = m->m_next; 995 if (m == NULL) 996 return (EBADRPC); 997 s = m->m_len; 998 } 999 *mdp = m; 1000 *dposp = mtod(m, caddr_t)+offs; 1001 return (0); 1002} 1003 1004/* 1005 * Copy a string into mbufs for the hard cases... 1006 */ 1007int 1008nfsm_strtmbuf(mb, bpos, cp, siz) 1009 struct mbuf **mb; 1010 char **bpos; 1011 char *cp; 1012 long siz; 1013{ 1014 register struct mbuf *m1 = 0, *m2; 1015 long left, xfer, len, tlen; 1016 u_long *tl; 1017 int putsize; 1018 1019 putsize = 1; 1020 m2 = *mb; 1021 left = M_TRAILINGSPACE(m2); 1022 if (left > 0) { 1023 tl = ((u_long *)(*bpos)); 1024 *tl++ = txdr_unsigned(siz); 1025 putsize = 0; 1026 left -= NFSX_UNSIGNED; 1027 m2->m_len += NFSX_UNSIGNED; 1028 if (left > 0) { 1029 bcopy(cp, (caddr_t) tl, left); 1030 siz -= left; 1031 cp += left; 1032 m2->m_len += left; 1033 left = 0; 1034 } 1035 } 1036 /* Loop around adding mbufs */ 1037 while (siz > 0) { 1038 MGET(m1, M_WAIT, MT_DATA); 1039 if (siz > MLEN) 1040 MCLGET(m1, M_WAIT); 1041 m1->m_len = NFSMSIZ(m1); 1042 m2->m_next = m1; 1043 m2 = m1; 1044 tl = mtod(m1, u_long *); 1045 tlen = 0; 1046 if (putsize) { 1047 *tl++ = txdr_unsigned(siz); 1048 m1->m_len -= NFSX_UNSIGNED; 1049 tlen = NFSX_UNSIGNED; 1050 putsize = 0; 1051 } 1052 if (siz < m1->m_len) { 1053 len = nfsm_rndup(siz); 1054 xfer = siz; 1055 if (xfer < len) 1056 *(tl+(xfer>>2)) = 0; 1057 } else { 1058 xfer = len = m1->m_len; 1059 } 1060 bcopy(cp, (caddr_t) tl, xfer); 1061 m1->m_len = len+tlen; 1062 siz -= xfer; 1063 cp += xfer; 1064 } 1065 *mb = m1; 1066 *bpos = mtod(m1, caddr_t)+m1->m_len; 1067 return (0); 1068} 1069 1070/* 1071 * Called once to initialize data structures... 1072 */ 1073int 1074nfs_init() 1075{ 1076 register int i; 1077 1078 /* 1079 * Check to see if major data structures haven't bloated. 1080 */ 1081 if (sizeof (struct nfsnode) > NFS_NODEALLOC) { 1082 printf("struct nfsnode bloated (> %dbytes)\n", NFS_NODEALLOC); 1083 printf("Try reducing NFS_SMALLFH\n"); 1084 } 1085 if (sizeof (struct nfsmount) > NFS_MNTALLOC) { 1086 printf("struct nfsmount bloated (> %dbytes)\n", NFS_MNTALLOC); 1087 printf("Try reducing NFS_MUIDHASHSIZ\n"); 1088 } 1089 if (sizeof (struct nfssvc_sock) > NFS_SVCALLOC) { 1090 printf("struct nfssvc_sock bloated (> %dbytes)\n",NFS_SVCALLOC); 1091 printf("Try reducing NFS_UIDHASHSIZ\n"); 1092 } 1093 if (sizeof (struct nfsuid) > NFS_UIDALLOC) { 1094 printf("struct nfsuid bloated (> %dbytes)\n",NFS_UIDALLOC); 1095 printf("Try unionizing the nu_nickname and nu_flag fields\n"); 1096 } 1097 nfsrtt.pos = 0; 1098 rpc_vers = txdr_unsigned(RPC_VER2); 1099 rpc_call = txdr_unsigned(RPC_CALL); 1100 rpc_reply = txdr_unsigned(RPC_REPLY); 1101 rpc_msgdenied = txdr_unsigned(RPC_MSGDENIED); 1102 rpc_msgaccepted = txdr_unsigned(RPC_MSGACCEPTED); 1103 rpc_mismatch = txdr_unsigned(RPC_MISMATCH); 1104 rpc_autherr = txdr_unsigned(RPC_AUTHERR); 1105 rpc_auth_unix = txdr_unsigned(RPCAUTH_UNIX); 1106 rpc_auth_kerb = txdr_unsigned(RPCAUTH_KERB4); 1107 nfs_prog = txdr_unsigned(NFS_PROG); 1108 nqnfs_prog = txdr_unsigned(NQNFS_PROG); 1109 nfs_true = txdr_unsigned(TRUE); 1110 nfs_false = txdr_unsigned(FALSE); 1111 nfs_xdrneg1 = txdr_unsigned(-1); 1112 nfs_ticks = (hz * NFS_TICKINTVL + 500) / 1000; 1113 if (nfs_ticks < 1) 1114 nfs_ticks = 1; 1115 /* Ensure async daemons disabled */ 1116 for (i = 0; i < NFS_MAXASYNCDAEMON; i++) 1117 nfs_iodwant[i] = (struct proc *)0; 1118 TAILQ_INIT(&nfs_bufq); 1119 nfs_nhinit(); /* Init the nfsnode table */ 1120 nfsrv_init(0); /* Init server data structures */ 1121 nfsrv_initcache(); /* Init the server request cache */ 1122 1123 /* 1124 * Initialize the nqnfs server stuff. 1125 */ 1126 if (nqnfsstarttime == 0) { 1127 nqnfsstarttime = boottime.tv_sec + nqsrv_maxlease 1128 + nqsrv_clockskew + nqsrv_writeslack; 1129 NQLOADNOVRAM(nqnfsstarttime); 1130 CIRCLEQ_INIT(&nqtimerhead); 1131 nqfhhashtbl = hashinit(NQLCHSZ, M_NQLEASE, &nqfhhash); 1132 } 1133 1134 /* 1135 * Initialize reply list and start timer 1136 */ 1137 TAILQ_INIT(&nfs_reqq); 1138 nfs_timer(0); 1139 1140#ifdef __FreeBSD__ 1141 /* 1142 * Set up lease_check and lease_updatetime so that other parts 1143 * of the system can call us, if we are loadable. 1144 */ 1145 lease_check = nfs_lease_check; 1146 lease_updatetime = nfs_lease_updatetime; 1147 vfsconf[MOUNT_NFS]->vfc_refcount++; /* make us non-unloadable */ 1148#ifdef VFS_LKM 1149 sysent[SYS_nfssvc].sy_narg = 2; 1150 sysent[SYS_nfssvc].sy_call = nfssvc; 1151 sysent[SYS_getfh].sy_narg = 2; 1152 sysent[SYS_getfh].sy_call = getfh; 1153#endif 1154#endif 1155 1156 return (0); 1157} 1158 1159/* 1160 * Attribute cache routines. 1161 * nfs_loadattrcache() - loads or updates the cache contents from attributes 1162 * that are on the mbuf list 1163 * nfs_getattrcache() - returns valid attributes if found in cache, returns 1164 * error otherwise 1165 */ 1166 1167/* 1168 * Load the attribute cache (that lives in the nfsnode entry) with 1169 * the values on the mbuf list and 1170 * Iff vap not NULL 1171 * copy the attributes to *vaper 1172 */ 1173int 1174nfs_loadattrcache(vpp, mdp, dposp, vaper) 1175 struct vnode **vpp; 1176 struct mbuf **mdp; 1177 caddr_t *dposp; 1178 struct vattr *vaper; 1179{ 1180 register struct vnode *vp = *vpp; 1181 register struct vattr *vap; 1182 register struct nfs_fattr *fp; 1183 register struct nfsnode *np; 1184 register struct nfsnodehashhead *nhpp; 1185 register long t1; 1186 caddr_t cp2; 1187 int error = 0, rdev; 1188 struct mbuf *md; 1189 enum vtype vtyp; 1190 u_short vmode; 1191 struct timespec mtime; 1192 struct vnode *nvp; 1193 int v3 = NFS_ISV3(vp); 1194 1195 md = *mdp; 1196 t1 = (mtod(md, caddr_t) + md->m_len) - *dposp; 1197 if (error = nfsm_disct(mdp, dposp, NFSX_FATTR(v3), t1, &cp2)) 1198 return (error); 1199 fp = (struct nfs_fattr *)cp2; 1200 if (v3) { 1201 vtyp = nfsv3tov_type(fp->fa_type); 1202 vmode = fxdr_unsigned(u_short, fp->fa_mode); 1203 rdev = makedev(fxdr_unsigned(u_char, fp->fa3_rdev.specdata1), 1204 fxdr_unsigned(u_char, fp->fa3_rdev.specdata2)); 1205 fxdr_nfsv3time(&fp->fa3_mtime, &mtime); 1206 } else { 1207 vtyp = nfsv2tov_type(fp->fa_type); 1208 vmode = fxdr_unsigned(u_short, fp->fa_mode); 1209 /* 1210 * XXX 1211 * 1212 * The duplicate information returned in fa_type and fa_mode 1213 * is an ambiguity in the NFS version 2 protocol. 1214 * 1215 * VREG should be taken literally as a regular file. If a 1216 * server intents to return some type information differently 1217 * in the upper bits of the mode field (e.g. for sockets, or 1218 * FIFOs), NFSv2 mandates fa_type to be VNON. Anyway, we 1219 * leave the examination of the mode bits even in the VREG 1220 * case to avoid breakage for bogus servers, but we make sure 1221 * that there are actually type bits set in the upper part of 1222 * fa_mode (and failing that, trust the va_type field). 1223 * 1224 * NFSv3 cleared the issue, and requires fa_mode to not 1225 * contain any type information (while also introduing sockets 1226 * and FIFOs for fa_type). 1227 */ 1228 if (vtyp == VNON || (vtyp == VREG && (vmode & S_IFMT) != 0)) 1229 vtyp = IFTOVT(vmode); 1230 rdev = fxdr_unsigned(long, fp->fa2_rdev); 1231 fxdr_nfsv2time(&fp->fa2_mtime, &mtime); 1232 1233 /* 1234 * Really ugly NFSv2 kludge. 1235 */ 1236 if (vtyp == VCHR && rdev == 0xffffffff) 1237 vtyp = VFIFO; 1238 } 1239 1240 /* 1241 * If v_type == VNON it is a new node, so fill in the v_type, 1242 * n_mtime fields. Check to see if it represents a special 1243 * device, and if so, check for a possible alias. Once the 1244 * correct vnode has been obtained, fill in the rest of the 1245 * information. 1246 */ 1247 np = VTONFS(vp); 1248 if (vp->v_type != vtyp) { 1249 /* 1250 * If we had a lock and it turns out that the vnode 1251 * is an object which we don't want to lock (e.g. VDIR) 1252 * to avoid nasty hanging problems on a server crash, 1253 * then release it here. 1254 */ 1255 if (vtyp != VREG && VOP_ISLOCKED(vp)) 1256 VOP_UNLOCK(vp); 1257 vp->v_type = vtyp; 1258 if (vp->v_type == VFIFO) { 1259 vp->v_op = fifo_nfsv2nodeop_p; 1260 } 1261 if (vp->v_type == VCHR || vp->v_type == VBLK) { 1262 vp->v_op = spec_nfsv2nodeop_p; 1263 nvp = checkalias(vp, (dev_t)rdev, vp->v_mount); 1264 if (nvp) { 1265 /* 1266 * Discard unneeded vnode, but save its nfsnode. 1267 */ 1268 LIST_REMOVE(np, n_hash); 1269 nvp->v_data = vp->v_data; 1270 vp->v_data = NULL; 1271 vp->v_op = spec_vnodeop_p; 1272 vrele(vp); 1273 vgone(vp); 1274 /* 1275 * Reinitialize aliased node. 1276 */ 1277 np->n_vnode = nvp; 1278 nhpp = NFSNOHASH(nfs_hash(np->n_fhp, np->n_fhsize)); 1279 LIST_INSERT_HEAD(nhpp, np, n_hash); 1280 *vpp = vp = nvp; 1281 } 1282 } 1283 np->n_mtime = mtime.ts_sec; 1284 } 1285 vap = &np->n_vattr; 1286 vap->va_type = vtyp; 1287 vap->va_mode = (vmode & 07777); 1288 vap->va_rdev = (dev_t)rdev; 1289 vap->va_mtime = mtime; 1290 vap->va_fsid = vp->v_mount->mnt_stat.f_fsid.val[0]; 1291 if (v3) { 1292 vap->va_nlink = fxdr_unsigned(u_short, fp->fa_nlink); 1293 vap->va_uid = fxdr_unsigned(uid_t, fp->fa_uid); 1294 vap->va_gid = fxdr_unsigned(gid_t, fp->fa_gid); 1295 fxdr_hyper(&fp->fa3_size, &vap->va_size); 1296 vap->va_blocksize = NFS_FABLKSIZE; 1297 fxdr_hyper(&fp->fa3_used, &vap->va_bytes); 1298 vap->va_fileid = fxdr_unsigned(int, fp->fa3_fileid.nfsuquad[1]); 1299 fxdr_nfsv3time(&fp->fa3_atime, &vap->va_atime); 1300 fxdr_nfsv3time(&fp->fa3_ctime, &vap->va_ctime); 1301 vap->va_flags = 0; 1302 vap->va_filerev = 0; 1303 } else { 1304 vap->va_nlink = fxdr_unsigned(u_short, fp->fa_nlink); 1305 vap->va_uid = fxdr_unsigned(uid_t, fp->fa_uid); 1306 vap->va_gid = fxdr_unsigned(gid_t, fp->fa_gid); 1307 vap->va_size = fxdr_unsigned(u_long, fp->fa2_size); 1308 vap->va_blocksize = fxdr_unsigned(long, fp->fa2_blocksize); 1309 vap->va_bytes = fxdr_unsigned(long, fp->fa2_blocks) * NFS_FABLKSIZE; 1310 vap->va_fileid = fxdr_unsigned(long, fp->fa2_fileid); 1311 fxdr_nfsv2time(&fp->fa2_atime, &vap->va_atime); 1312 vap->va_flags = 0; 1313 vap->va_ctime.ts_sec = fxdr_unsigned(long, fp->fa2_ctime.nfsv2_sec); 1314 vap->va_ctime.ts_nsec = 0; 1315 vap->va_gen = fxdr_unsigned(u_long, fp->fa2_ctime.nfsv2_usec); 1316 vap->va_filerev = 0; 1317 } 1318 if (vap->va_size != np->n_size) { 1319 if (vap->va_type == VREG) { 1320 if (np->n_flag & NMODIFIED) { 1321 if (vap->va_size < np->n_size) 1322 vap->va_size = np->n_size; 1323 else 1324 np->n_size = vap->va_size; 1325 } else 1326 np->n_size = vap->va_size; 1327 vnode_pager_setsize(vp, (u_long)np->n_size); 1328 } else 1329 np->n_size = vap->va_size; 1330 } 1331 np->n_attrstamp = time.tv_sec; 1332 if (vaper != NULL) { 1333 bcopy((caddr_t)vap, (caddr_t)vaper, sizeof(*vap)); 1334 if (np->n_flag & NCHG) { 1335 if (np->n_flag & NACC) 1336 vaper->va_atime = np->n_atim; 1337 if (np->n_flag & NUPD) 1338 vaper->va_mtime = np->n_mtim; 1339 } 1340 } 1341 return (0); 1342} 1343 1344/* 1345 * Check the time stamp 1346 * If the cache is valid, copy contents to *vap and return 0 1347 * otherwise return an error 1348 */ 1349int 1350nfs_getattrcache(vp, vaper) 1351 register struct vnode *vp; 1352 struct vattr *vaper; 1353{ 1354 register struct nfsnode *np = VTONFS(vp); 1355 register struct vattr *vap; 1356 1357 if ((time.tv_sec - np->n_attrstamp) >= NFS_ATTRTIMEO(np)) { 1358 nfsstats.attrcache_misses++; 1359 return (ENOENT); 1360 } 1361 nfsstats.attrcache_hits++; 1362 vap = &np->n_vattr; 1363 if (vap->va_size != np->n_size) { 1364 if (vap->va_type == VREG) { 1365 if (np->n_flag & NMODIFIED) { 1366 if (vap->va_size < np->n_size) 1367 vap->va_size = np->n_size; 1368 else 1369 np->n_size = vap->va_size; 1370 } else 1371 np->n_size = vap->va_size; 1372 vnode_pager_setsize(vp, (u_long)np->n_size); 1373 } else 1374 np->n_size = vap->va_size; 1375 } 1376 bcopy((caddr_t)vap, (caddr_t)vaper, sizeof(struct vattr)); 1377 if (np->n_flag & NCHG) { 1378 if (np->n_flag & NACC) 1379 vaper->va_atime = np->n_atim; 1380 if (np->n_flag & NUPD) 1381 vaper->va_mtime = np->n_mtim; 1382 } 1383 return (0); 1384} 1385 1386/* 1387 * Set up nameidata for a lookup() call and do it 1388 */ 1389int 1390nfs_namei(ndp, fhp, len, slp, nam, mdp, dposp, retdirp, p, kerbflag) 1391 register struct nameidata *ndp; 1392 fhandle_t *fhp; 1393 int len; 1394 struct nfssvc_sock *slp; 1395 struct mbuf *nam; 1396 struct mbuf **mdp; 1397 caddr_t *dposp; 1398 struct vnode **retdirp; 1399 struct proc *p; 1400 int kerbflag; 1401{ 1402 register int i, rem; 1403 register struct mbuf *md; 1404 register char *fromcp, *tocp; 1405 struct vnode *dp; 1406 int error, rdonly; 1407 struct componentname *cnp = &ndp->ni_cnd; 1408 1409 *retdirp = (struct vnode *)0; 1410 MALLOC(cnp->cn_pnbuf, char *, len + 1, M_NAMEI, M_WAITOK); 1411 /* 1412 * Copy the name from the mbuf list to ndp->ni_pnbuf 1413 * and set the various ndp fields appropriately. 1414 */ 1415 fromcp = *dposp; 1416 tocp = cnp->cn_pnbuf; 1417 md = *mdp; 1418 rem = mtod(md, caddr_t) + md->m_len - fromcp; 1419 cnp->cn_hash = 0; 1420 for (i = 0; i < len; i++) { 1421 while (rem == 0) { 1422 md = md->m_next; 1423 if (md == NULL) { 1424 error = EBADRPC; 1425 goto out; 1426 } 1427 fromcp = mtod(md, caddr_t); 1428 rem = md->m_len; 1429 } 1430 if (*fromcp == '\0' || *fromcp == '/') { 1431 error = EACCES; 1432 goto out; 1433 } 1434 cnp->cn_hash += (unsigned char)*fromcp; 1435 *tocp++ = *fromcp++; 1436 rem--; 1437 } 1438 *tocp = '\0'; 1439 *mdp = md; 1440 *dposp = fromcp; 1441 len = nfsm_rndup(len)-len; 1442 if (len > 0) { 1443 if (rem >= len) 1444 *dposp += len; 1445 else if (error = nfs_adv(mdp, dposp, len, rem)) 1446 goto out; 1447 } 1448 ndp->ni_pathlen = tocp - cnp->cn_pnbuf; 1449 cnp->cn_nameptr = cnp->cn_pnbuf; 1450 /* 1451 * Extract and set starting directory. 1452 */ 1453 if (error = nfsrv_fhtovp(fhp, FALSE, &dp, ndp->ni_cnd.cn_cred, slp, 1454 nam, &rdonly, kerbflag)) 1455 goto out; 1456 if (dp->v_type != VDIR) { 1457 nfsrv_vrele(dp); 1458 error = ENOTDIR; 1459 goto out; 1460 } 1461 VREF(dp); 1462 *retdirp = dp; 1463 ndp->ni_startdir = dp; 1464 if (rdonly) 1465 cnp->cn_flags |= (NOCROSSMOUNT | RDONLY); 1466 else 1467 cnp->cn_flags |= NOCROSSMOUNT; 1468 /* 1469 * And call lookup() to do the real work 1470 */ 1471 cnp->cn_proc = p; 1472 if (error = lookup(ndp)) 1473 goto out; 1474 /* 1475 * Check for encountering a symbolic link 1476 */ 1477 if (cnp->cn_flags & ISSYMLINK) { 1478 if ((cnp->cn_flags & LOCKPARENT) && ndp->ni_pathlen == 1) 1479 vput(ndp->ni_dvp); 1480 else 1481 vrele(ndp->ni_dvp); 1482 vput(ndp->ni_vp); 1483 ndp->ni_vp = NULL; 1484 error = EINVAL; 1485 goto out; 1486 } 1487 1488 nfsrv_vmio(ndp->ni_vp); 1489 1490 /* 1491 * Check for saved name request 1492 */ 1493 if (cnp->cn_flags & (SAVENAME | SAVESTART)) { 1494 cnp->cn_flags |= HASBUF; 1495 return (0); 1496 } 1497out: 1498 FREE(cnp->cn_pnbuf, M_NAMEI); 1499 return (error); 1500} 1501 1502/* 1503 * A fiddled version of m_adj() that ensures null fill to a long 1504 * boundary and only trims off the back end 1505 */ 1506void 1507nfsm_adj(mp, len, nul) 1508 struct mbuf *mp; 1509 register int len; 1510 int nul; 1511{ 1512 register struct mbuf *m; 1513 register int count, i; 1514 register char *cp; 1515 1516 /* 1517 * Trim from tail. Scan the mbuf chain, 1518 * calculating its length and finding the last mbuf. 1519 * If the adjustment only affects this mbuf, then just 1520 * adjust and return. Otherwise, rescan and truncate 1521 * after the remaining size. 1522 */ 1523 count = 0; 1524 m = mp; 1525 for (;;) { 1526 count += m->m_len; 1527 if (m->m_next == (struct mbuf *)0) 1528 break; 1529 m = m->m_next; 1530 } 1531 if (m->m_len > len) { 1532 m->m_len -= len; 1533 if (nul > 0) { 1534 cp = mtod(m, caddr_t)+m->m_len-nul; 1535 for (i = 0; i < nul; i++) 1536 *cp++ = '\0'; 1537 } 1538 return; 1539 } 1540 count -= len; 1541 if (count < 0) 1542 count = 0; 1543 /* 1544 * Correct length for chain is "count". 1545 * Find the mbuf with last data, adjust its length, 1546 * and toss data from remaining mbufs on chain. 1547 */ 1548 for (m = mp; m; m = m->m_next) { 1549 if (m->m_len >= count) { 1550 m->m_len = count; 1551 if (nul > 0) { 1552 cp = mtod(m, caddr_t)+m->m_len-nul; 1553 for (i = 0; i < nul; i++) 1554 *cp++ = '\0'; 1555 } 1556 break; 1557 } 1558 count -= m->m_len; 1559 } 1560 for (m = m->m_next;m;m = m->m_next) 1561 m->m_len = 0; 1562} 1563 1564/* 1565 * Make these functions instead of macros, so that the kernel text size 1566 * doesn't get too big... 1567 */ 1568void 1569nfsm_srvwcc(nfsd, before_ret, before_vap, after_ret, after_vap, mbp, bposp) 1570 struct nfsrv_descript *nfsd; 1571 int before_ret; 1572 register struct vattr *before_vap; 1573 int after_ret; 1574 struct vattr *after_vap; 1575 struct mbuf **mbp; 1576 char **bposp; 1577{ 1578 register struct mbuf *mb = *mbp, *mb2; 1579 register char *bpos = *bposp; 1580 register u_long *tl; 1581 1582 if (before_ret) { 1583 nfsm_build(tl, u_long *, NFSX_UNSIGNED); 1584 *tl = nfs_false; 1585 } else { 1586 nfsm_build(tl, u_long *, 7 * NFSX_UNSIGNED); 1587 *tl++ = nfs_true; 1588 txdr_hyper(&(before_vap->va_size), tl); 1589 tl += 2; 1590 txdr_nfsv3time(&(before_vap->va_mtime), tl); 1591 tl += 2; 1592 txdr_nfsv3time(&(before_vap->va_ctime), tl); 1593 } 1594 *bposp = bpos; 1595 *mbp = mb; 1596 nfsm_srvpostopattr(nfsd, after_ret, after_vap, mbp, bposp); 1597} 1598 1599void 1600nfsm_srvpostopattr(nfsd, after_ret, after_vap, mbp, bposp) 1601 struct nfsrv_descript *nfsd; 1602 int after_ret; 1603 struct vattr *after_vap; 1604 struct mbuf **mbp; 1605 char **bposp; 1606{ 1607 register struct mbuf *mb = *mbp, *mb2; 1608 register char *bpos = *bposp; 1609 register u_long *tl; 1610 register struct nfs_fattr *fp; 1611 1612 if (after_ret) { 1613 nfsm_build(tl, u_long *, NFSX_UNSIGNED); 1614 *tl = nfs_false; 1615 } else { 1616 nfsm_build(tl, u_long *, NFSX_UNSIGNED + NFSX_V3FATTR); 1617 *tl++ = nfs_true; 1618 fp = (struct nfs_fattr *)tl; 1619 nfsm_srvfattr(nfsd, after_vap, fp); 1620 } 1621 *mbp = mb; 1622 *bposp = bpos; 1623} 1624 1625void 1626nfsm_srvfattr(nfsd, vap, fp) 1627 register struct nfsrv_descript *nfsd; 1628 register struct vattr *vap; 1629 register struct nfs_fattr *fp; 1630{ 1631 1632 fp->fa_nlink = txdr_unsigned(vap->va_nlink); 1633 fp->fa_uid = txdr_unsigned(vap->va_uid); 1634 fp->fa_gid = txdr_unsigned(vap->va_gid); 1635 if (nfsd->nd_flag & ND_NFSV3) { 1636 fp->fa_type = vtonfsv3_type(vap->va_type); 1637 fp->fa_mode = vtonfsv3_mode(vap->va_mode); 1638 txdr_hyper(&vap->va_size, &fp->fa3_size); 1639 txdr_hyper(&vap->va_bytes, &fp->fa3_used); 1640 fp->fa3_rdev.specdata1 = txdr_unsigned(major(vap->va_rdev)); 1641 fp->fa3_rdev.specdata2 = txdr_unsigned(minor(vap->va_rdev)); 1642 fp->fa3_fsid.nfsuquad[0] = 0; 1643 fp->fa3_fsid.nfsuquad[1] = txdr_unsigned(vap->va_fsid); 1644 fp->fa3_fileid.nfsuquad[0] = 0; 1645 fp->fa3_fileid.nfsuquad[1] = txdr_unsigned(vap->va_fileid); 1646 txdr_nfsv3time(&vap->va_atime, &fp->fa3_atime); 1647 txdr_nfsv3time(&vap->va_mtime, &fp->fa3_mtime); 1648 txdr_nfsv3time(&vap->va_ctime, &fp->fa3_ctime); 1649 } else { 1650 fp->fa_type = vtonfsv2_type(vap->va_type); 1651 fp->fa_mode = vtonfsv2_mode(vap->va_type, vap->va_mode); 1652 fp->fa2_size = txdr_unsigned(vap->va_size); 1653 fp->fa2_blocksize = txdr_unsigned(vap->va_blocksize); 1654 if (vap->va_type == VFIFO) 1655 fp->fa2_rdev = 0xffffffff; 1656 else 1657 fp->fa2_rdev = txdr_unsigned(vap->va_rdev); 1658 fp->fa2_blocks = txdr_unsigned(vap->va_bytes / NFS_FABLKSIZE); 1659 fp->fa2_fsid = txdr_unsigned(vap->va_fsid); 1660 fp->fa2_fileid = txdr_unsigned(vap->va_fileid); 1661 txdr_nfsv2time(&vap->va_atime, &fp->fa2_atime); 1662 txdr_nfsv2time(&vap->va_mtime, &fp->fa2_mtime); 1663 txdr_nfsv2time(&vap->va_ctime, &fp->fa2_ctime); 1664 } 1665} 1666 1667/* 1668 * nfsrv_fhtovp() - convert a fh to a vnode ptr (optionally locked) 1669 * - look up fsid in mount list (if not found ret error) 1670 * - get vp and export rights by calling VFS_FHTOVP() 1671 * - if cred->cr_uid == 0 or MNT_EXPORTANON set it to credanon 1672 * - if not lockflag unlock it with VOP_UNLOCK() 1673 */ 1674int 1675nfsrv_fhtovp(fhp, lockflag, vpp, cred, slp, nam, rdonlyp, kerbflag) 1676 fhandle_t *fhp; 1677 int lockflag; 1678 struct vnode **vpp; 1679 struct ucred *cred; 1680 struct nfssvc_sock *slp; 1681 struct mbuf *nam; 1682 int *rdonlyp; 1683 int kerbflag; 1684{ 1685 register struct mount *mp; 1686 register int i; 1687 struct ucred *credanon; 1688 int error, exflags; 1689 1690 *vpp = (struct vnode *)0; 1691 mp = getvfs(&fhp->fh_fsid); 1692 if (!mp) 1693 return (ESTALE); 1694 error = VFS_FHTOVP(mp, &fhp->fh_fid, nam, vpp, &exflags, &credanon); 1695 if (error) 1696 return (error); 1697 /* 1698 * Check/setup credentials. 1699 */ 1700 if (exflags & MNT_EXKERB) { 1701 if (!kerbflag) { 1702 vput(*vpp); 1703 return (NFSERR_AUTHERR | AUTH_TOOWEAK); 1704 } 1705 } else if (kerbflag) { 1706 vput(*vpp); 1707 return (NFSERR_AUTHERR | AUTH_TOOWEAK); 1708 } else if (cred->cr_uid == 0 || (exflags & MNT_EXPORTANON)) { 1709 cred->cr_uid = credanon->cr_uid; 1710 for (i = 0; i < credanon->cr_ngroups && i < NGROUPS; i++) 1711 cred->cr_groups[i] = credanon->cr_groups[i]; 1712 cred->cr_ngroups = i; 1713 } 1714 if (exflags & MNT_EXRDONLY) 1715 *rdonlyp = 1; 1716 else 1717 *rdonlyp = 0; 1718 1719 nfsrv_vmio(*vpp); 1720 1721 if (!lockflag) 1722 VOP_UNLOCK(*vpp); 1723 return (0); 1724} 1725 1726/* 1727 * This function compares two net addresses by family and returns TRUE 1728 * if they are the same host. 1729 * If there is any doubt, return FALSE. 1730 * The AF_INET family is handled as a special case so that address mbufs 1731 * don't need to be saved to store "struct in_addr", which is only 4 bytes. 1732 */ 1733int 1734netaddr_match(family, haddr, nam) 1735 int family; 1736 union nethostaddr *haddr; 1737 struct mbuf *nam; 1738{ 1739 register struct sockaddr_in *inetaddr; 1740 1741 switch (family) { 1742 case AF_INET: 1743 inetaddr = mtod(nam, struct sockaddr_in *); 1744 if (inetaddr->sin_family == AF_INET && 1745 inetaddr->sin_addr.s_addr == haddr->had_inetaddr) 1746 return (1); 1747 break; 1748#ifdef ISO 1749 case AF_ISO: 1750 { 1751 register struct sockaddr_iso *isoaddr1, *isoaddr2; 1752 1753 isoaddr1 = mtod(nam, struct sockaddr_iso *); 1754 isoaddr2 = mtod(haddr->had_nam, struct sockaddr_iso *); 1755 if (isoaddr1->siso_family == AF_ISO && 1756 isoaddr1->siso_nlen > 0 && 1757 isoaddr1->siso_nlen == isoaddr2->siso_nlen && 1758 SAME_ISOADDR(isoaddr1, isoaddr2)) 1759 return (1); 1760 break; 1761 } 1762#endif /* ISO */ 1763 default: 1764 break; 1765 }; 1766 return (0); 1767} 1768 1769static nfsuint64 nfs_nullcookie = { 0, 0 }; 1770/* 1771 * This function finds the directory cookie that corresponds to the 1772 * logical byte offset given. 1773 */ 1774nfsuint64 * 1775nfs_getcookie(np, off, add) 1776 register struct nfsnode *np; 1777 off_t off; 1778 int add; 1779{ 1780 register struct nfsdmap *dp, *dp2; 1781 register int pos; 1782 1783 pos = off / NFS_DIRBLKSIZ; 1784 if (pos == 0) { 1785#ifdef DIAGNOSTIC 1786 if (add) 1787 panic("nfs getcookie add at 0"); 1788#endif 1789 return (&nfs_nullcookie); 1790 } 1791 pos--; 1792 dp = np->n_cookies.lh_first; 1793 if (!dp) { 1794 if (add) { 1795 MALLOC(dp, struct nfsdmap *, sizeof (struct nfsdmap), 1796 M_NFSDIROFF, M_WAITOK); 1797 dp->ndm_eocookie = 0; 1798 LIST_INSERT_HEAD(&np->n_cookies, dp, ndm_list); 1799 } else 1800 return ((nfsuint64 *)0); 1801 } 1802 while (pos >= NFSNUMCOOKIES) { 1803 pos -= NFSNUMCOOKIES; 1804 if (dp->ndm_list.le_next) { 1805 if (!add && dp->ndm_eocookie < NFSNUMCOOKIES && 1806 pos >= dp->ndm_eocookie) 1807 return ((nfsuint64 *)0); 1808 dp = dp->ndm_list.le_next; 1809 } else if (add) { 1810 MALLOC(dp2, struct nfsdmap *, sizeof (struct nfsdmap), 1811 M_NFSDIROFF, M_WAITOK); 1812 dp2->ndm_eocookie = 0; 1813 LIST_INSERT_AFTER(dp, dp2, ndm_list); 1814 dp = dp2; 1815 } else 1816 return ((nfsuint64 *)0); 1817 } 1818 if (pos >= dp->ndm_eocookie) { 1819 if (add) 1820 dp->ndm_eocookie = pos + 1; 1821 else 1822 return ((nfsuint64 *)0); 1823 } 1824 return (&dp->ndm_cookies[pos]); 1825} 1826 1827/* 1828 * Invalidate cached directory information, except for the actual directory 1829 * blocks (which are invalidated separately). 1830 * Done mainly to avoid the use of stale offset cookies. 1831 */ 1832void 1833nfs_invaldir(vp) 1834 register struct vnode *vp; 1835{ 1836 register struct nfsnode *np = VTONFS(vp); 1837 1838#ifdef DIAGNOSTIC 1839 if (vp->v_type != VDIR) 1840 panic("nfs: invaldir not dir"); 1841#endif 1842 np->n_direofoffset = 0; 1843 np->n_cookieverf.nfsuquad[0] = 0; 1844 np->n_cookieverf.nfsuquad[1] = 0; 1845 if (np->n_cookies.lh_first) 1846 np->n_cookies.lh_first->ndm_eocookie = 0; 1847} 1848 1849/* 1850 * The write verifier has changed (probably due to a server reboot), so all 1851 * B_NEEDCOMMIT blocks will have to be written again. Since they are on the 1852 * dirty block list as B_DELWRI, all this takes is clearing the B_NEEDCOMMIT 1853 * flag. Once done the new write verifier can be set for the mount point. 1854 */ 1855void 1856nfs_clearcommit(mp) 1857 struct mount *mp; 1858{ 1859 register struct vnode *vp, *nvp; 1860 register struct buf *bp, *nbp; 1861 int s; 1862 1863 s = splbio(); 1864loop: 1865 for (vp = mp->mnt_vnodelist.lh_first; vp; vp = nvp) { 1866 if (vp->v_mount != mp) /* Paranoia */ 1867 goto loop; 1868 nvp = vp->v_mntvnodes.le_next; 1869 for (bp = vp->v_dirtyblkhd.lh_first; bp; bp = nbp) { 1870 nbp = bp->b_vnbufs.le_next; 1871 if ((bp->b_flags & (B_BUSY | B_DELWRI | B_NEEDCOMMIT)) 1872 == (B_DELWRI | B_NEEDCOMMIT)) 1873 bp->b_flags &= ~B_NEEDCOMMIT; 1874 } 1875 } 1876 splx(s); 1877} 1878 1879/* 1880 * Map errnos to NFS error numbers. For Version 3 also filter out error 1881 * numbers not specified for the associated procedure. 1882 */ 1883int 1884nfsrv_errmap(nd, err) 1885 struct nfsrv_descript *nd; 1886 register int err; 1887{ 1888 register short *defaulterrp, *errp; 1889 1890 if (nd->nd_flag & ND_NFSV3) { 1891 if (nd->nd_procnum <= NFSPROC_COMMIT) { 1892 errp = defaulterrp = nfsrv_v3errmap[nd->nd_procnum]; 1893 while (*++errp) { 1894 if (*errp == err) 1895 return (err); 1896 else if (*errp > err) 1897 break; 1898 } 1899 return ((int)*defaulterrp); 1900 } else 1901 return (err & 0xffff); 1902 } 1903 if (err <= ELAST) 1904 return ((int)nfsrv_v2errmap[err - 1]); 1905 return (NFSERR_IO); 1906} 1907 1908int 1909nfsrv_vmio(struct vnode *vp) { 1910 vm_object_t object; 1911 1912 if ((vp == NULL) || (vp->v_type != VREG)) 1913 return 1; 1914 1915retry: 1916 if ((vp->v_flag & VVMIO) == 0) { 1917 struct vattr vat; 1918 struct proc *p = curproc; 1919 1920 if (VOP_GETATTR(vp, &vat, p->p_ucred, p) != 0) 1921 panic("nfsrv_vmio: VOP_GETATTR failed"); 1922 1923 (void) vnode_pager_alloc(vp, vat.va_size, 0, 0); 1924 1925 vp->v_flag |= VVMIO; 1926 } else { 1927 if ((object = vp->v_object) && 1928 (object->flags & OBJ_DEAD)) { 1929 tsleep(object, PVM, "nfdead", 0); 1930 goto retry; 1931 } 1932 if (!object) 1933 panic("nfsrv_vmio: VMIO object missing"); 1934 vm_object_reference(object); 1935 } 1936 return 0; 1937} 1938int 1939nfsrv_vput(struct vnode *vp) { 1940 if ((vp->v_flag & VVMIO) && vp->v_object) { 1941 vput(vp); 1942 vm_object_deallocate(vp->v_object); 1943 } else { 1944 vput(vp); 1945 } 1946 return 0; 1947} 1948int 1949nfsrv_vrele(struct vnode *vp) { 1950 if ((vp->v_flag & VVMIO) && vp->v_object) { 1951 vrele(vp); 1952 vm_object_deallocate(vp->v_object); 1953 } else { 1954 vrele(vp); 1955 } 1956 return 0; 1957} 1958