vfs_default.c revision 137297
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 6 * to Berkeley by John Heidemann of the UCLA Ficus project. 7 * 8 * Source: * @(#)i405_init.c 2.10 92/04/27 UCLA Ficus project 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 4. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 */ 34 35#include <sys/cdefs.h> 36__FBSDID("$FreeBSD: head/sys/kern/vfs_default.c 137297 2004-11-06 05:33:02Z alc $"); 37 38#include <sys/param.h> 39#include <sys/systm.h> 40#include <sys/bio.h> 41#include <sys/buf.h> 42#include <sys/conf.h> 43#include <sys/kernel.h> 44#include <sys/limits.h> 45#include <sys/lock.h> 46#include <sys/malloc.h> 47#include <sys/mount.h> 48#include <sys/mutex.h> 49#include <sys/unistd.h> 50#include <sys/vnode.h> 51#include <sys/poll.h> 52 53#include <vm/vm.h> 54#include <vm/vm_object.h> 55#include <vm/vm_extern.h> 56#include <vm/pmap.h> 57#include <vm/vm_map.h> 58#include <vm/vm_page.h> 59#include <vm/vm_pager.h> 60#include <vm/vnode_pager.h> 61 62static int vop_nolookup(struct vop_lookup_args *); 63static int vop_nostrategy(struct vop_strategy_args *); 64 65/* 66 * This vnode table stores what we want to do if the filesystem doesn't 67 * implement a particular VOP. 68 * 69 * If there is no specific entry here, we will return EOPNOTSUPP. 70 * 71 */ 72 73vop_t **default_vnodeop_p; 74static struct vnodeopv_entry_desc default_vnodeop_entries[] = { 75 { &vop_default_desc, (vop_t *) vop_eopnotsupp }, 76 { &vop_advlock_desc, (vop_t *) vop_einval }, 77 { &vop_bmap_desc, (vop_t *) vop_stdbmap }, 78 { &vop_close_desc, (vop_t *) vop_null }, 79 { &vop_createvobject_desc, (vop_t *) vop_stdcreatevobject }, 80 { &vop_destroyvobject_desc, (vop_t *) vop_stddestroyvobject }, 81 { &vop_fsync_desc, (vop_t *) vop_null }, 82 { &vop_getpages_desc, (vop_t *) vop_stdgetpages }, 83 { &vop_getvobject_desc, (vop_t *) vop_stdgetvobject }, 84 { &vop_inactive_desc, (vop_t *) vop_stdinactive }, 85 { &vop_ioctl_desc, (vop_t *) vop_enotty }, 86 { &vop_islocked_desc, (vop_t *) vop_stdislocked }, 87 { &vop_lease_desc, (vop_t *) vop_null }, 88 { &vop_lock_desc, (vop_t *) vop_stdlock }, 89 { &vop_lookup_desc, (vop_t *) vop_nolookup }, 90 { &vop_open_desc, (vop_t *) vop_null }, 91 { &vop_pathconf_desc, (vop_t *) vop_einval }, 92 { &vop_poll_desc, (vop_t *) vop_nopoll }, 93 { &vop_putpages_desc, (vop_t *) vop_stdputpages }, 94 { &vop_readlink_desc, (vop_t *) vop_einval }, 95 { &vop_revoke_desc, (vop_t *) vop_revoke }, 96 { &vop_strategy_desc, (vop_t *) vop_nostrategy }, 97 { &vop_unlock_desc, (vop_t *) vop_stdunlock }, 98 { NULL, NULL } 99}; 100 101static struct vnodeopv_desc default_vnodeop_opv_desc = 102 { &default_vnodeop_p, default_vnodeop_entries }; 103 104VNODEOP_SET(default_vnodeop_opv_desc); 105 106/* 107 * Series of placeholder functions for various error returns for 108 * VOPs. 109 */ 110 111int 112vop_eopnotsupp(struct vop_generic_args *ap) 113{ 114 /* 115 printf("vop_notsupp[%s]\n", ap->a_desc->vdesc_name); 116 */ 117 118 return (EOPNOTSUPP); 119} 120 121int 122vop_ebadf(struct vop_generic_args *ap) 123{ 124 125 return (EBADF); 126} 127 128int 129vop_enotty(struct vop_generic_args *ap) 130{ 131 132 return (ENOTTY); 133} 134 135int 136vop_einval(struct vop_generic_args *ap) 137{ 138 139 return (EINVAL); 140} 141 142int 143vop_null(struct vop_generic_args *ap) 144{ 145 146 return (0); 147} 148 149/* 150 * Used to make a defined VOP fall back to the default VOP. 151 */ 152int 153vop_defaultop(struct vop_generic_args *ap) 154{ 155 156 return (VOCALL(default_vnodeop_p, ap->a_desc->vdesc_offset, ap)); 157} 158 159/* 160 * Helper function to panic on some bad VOPs in some filesystems. 161 */ 162int 163vop_panic(struct vop_generic_args *ap) 164{ 165 166 panic("filesystem goof: vop_panic[%s]", ap->a_desc->vdesc_name); 167} 168 169/* 170 * vop_std<something> and vop_no<something> are default functions for use by 171 * filesystems that need the "default reasonable" implementation for a 172 * particular operation. 173 * 174 * The documentation for the operations they implement exists (if it exists) 175 * in the VOP_<SOMETHING>(9) manpage (all uppercase). 176 */ 177 178/* 179 * Default vop for filesystems that do not support name lookup 180 */ 181static int 182vop_nolookup(ap) 183 struct vop_lookup_args /* { 184 struct vnode *a_dvp; 185 struct vnode **a_vpp; 186 struct componentname *a_cnp; 187 } */ *ap; 188{ 189 190 *ap->a_vpp = NULL; 191 return (ENOTDIR); 192} 193 194/* 195 * vop_nostrategy: 196 * 197 * Strategy routine for VFS devices that have none. 198 * 199 * BIO_ERROR and B_INVAL must be cleared prior to calling any strategy 200 * routine. Typically this is done for a BIO_READ strategy call. 201 * Typically B_INVAL is assumed to already be clear prior to a write 202 * and should not be cleared manually unless you just made the buffer 203 * invalid. BIO_ERROR should be cleared either way. 204 */ 205 206static int 207vop_nostrategy (struct vop_strategy_args *ap) 208{ 209 printf("No strategy for buffer at %p\n", ap->a_bp); 210 vprint("vnode", ap->a_vp); 211 ap->a_bp->b_ioflags |= BIO_ERROR; 212 ap->a_bp->b_error = EOPNOTSUPP; 213 bufdone(ap->a_bp); 214 return (EOPNOTSUPP); 215} 216 217/* 218 * vop_stdpathconf: 219 * 220 * Standard implementation of POSIX pathconf, to get information about limits 221 * for a filesystem. 222 * Override per filesystem for the case where the filesystem has smaller 223 * limits. 224 */ 225int 226vop_stdpathconf(ap) 227 struct vop_pathconf_args /* { 228 struct vnode *a_vp; 229 int a_name; 230 int *a_retval; 231 } */ *ap; 232{ 233 234 switch (ap->a_name) { 235 case _PC_LINK_MAX: 236 *ap->a_retval = LINK_MAX; 237 return (0); 238 case _PC_MAX_CANON: 239 *ap->a_retval = MAX_CANON; 240 return (0); 241 case _PC_MAX_INPUT: 242 *ap->a_retval = MAX_INPUT; 243 return (0); 244 case _PC_PIPE_BUF: 245 *ap->a_retval = PIPE_BUF; 246 return (0); 247 case _PC_CHOWN_RESTRICTED: 248 *ap->a_retval = 1; 249 return (0); 250 case _PC_VDISABLE: 251 *ap->a_retval = _POSIX_VDISABLE; 252 return (0); 253 default: 254 return (EINVAL); 255 } 256 /* NOTREACHED */ 257} 258 259/* 260 * Standard lock, unlock and islocked functions. 261 */ 262int 263vop_stdlock(ap) 264 struct vop_lock_args /* { 265 struct vnode *a_vp; 266 int a_flags; 267 struct thread *a_td; 268 } */ *ap; 269{ 270 struct vnode *vp = ap->a_vp; 271 272#ifndef DEBUG_LOCKS 273 return (lockmgr(vp->v_vnlock, ap->a_flags, VI_MTX(vp), ap->a_td)); 274#else 275 return (debuglockmgr(vp->v_vnlock, ap->a_flags, VI_MTX(vp), 276 ap->a_td, "vop_stdlock", vp->filename, vp->line)); 277#endif 278} 279 280/* See above. */ 281int 282vop_stdunlock(ap) 283 struct vop_unlock_args /* { 284 struct vnode *a_vp; 285 int a_flags; 286 struct thread *a_td; 287 } */ *ap; 288{ 289 struct vnode *vp = ap->a_vp; 290 291 return (lockmgr(vp->v_vnlock, ap->a_flags | LK_RELEASE, VI_MTX(vp), 292 ap->a_td)); 293} 294 295/* See above. */ 296int 297vop_stdislocked(ap) 298 struct vop_islocked_args /* { 299 struct vnode *a_vp; 300 struct thread *a_td; 301 } */ *ap; 302{ 303 304 return (lockstatus(ap->a_vp->v_vnlock, ap->a_td)); 305} 306 307/* Mark the vnode inactive */ 308int 309vop_stdinactive(ap) 310 struct vop_inactive_args /* { 311 struct vnode *a_vp; 312 struct thread *a_td; 313 } */ *ap; 314{ 315 316 VOP_UNLOCK(ap->a_vp, 0, ap->a_td); 317 return (0); 318} 319 320/* 321 * Return true for select/poll. 322 */ 323int 324vop_nopoll(ap) 325 struct vop_poll_args /* { 326 struct vnode *a_vp; 327 int a_events; 328 struct ucred *a_cred; 329 struct thread *a_td; 330 } */ *ap; 331{ 332 /* 333 * Return true for read/write. If the user asked for something 334 * special, return POLLNVAL, so that clients have a way of 335 * determining reliably whether or not the extended 336 * functionality is present without hard-coding knowledge 337 * of specific filesystem implementations. 338 * Stay in sync with kern_conf.c::no_poll(). 339 */ 340 if (ap->a_events & ~POLLSTANDARD) 341 return (POLLNVAL); 342 343 return (ap->a_events & (POLLIN | POLLOUT | POLLRDNORM | POLLWRNORM)); 344} 345 346/* 347 * Implement poll for local filesystems that support it. 348 */ 349int 350vop_stdpoll(ap) 351 struct vop_poll_args /* { 352 struct vnode *a_vp; 353 int a_events; 354 struct ucred *a_cred; 355 struct thread *a_td; 356 } */ *ap; 357{ 358 if (ap->a_events & ~POLLSTANDARD) 359 return (vn_pollrecord(ap->a_vp, ap->a_td, ap->a_events)); 360 return (ap->a_events & (POLLIN | POLLOUT | POLLRDNORM | POLLWRNORM)); 361} 362 363/* 364 * Return our mount point, as we will take charge of the writes. 365 */ 366int 367vop_stdgetwritemount(ap) 368 struct vop_getwritemount_args /* { 369 struct vnode *a_vp; 370 struct mount **a_mpp; 371 } */ *ap; 372{ 373 374 *(ap->a_mpp) = ap->a_vp->v_mount; 375 return (0); 376} 377 378/* Create the VM system backing object for this vnode */ 379int 380vop_stdcreatevobject(ap) 381 struct vop_createvobject_args /* { 382 struct vnode *vp; 383 struct ucred *cred; 384 struct thread *td; 385 } */ *ap; 386{ 387 struct vnode *vp = ap->a_vp; 388 struct ucred *cred = ap->a_cred; 389 struct thread *td = ap->a_td; 390 struct vattr vat; 391 vm_object_t object; 392 int error = 0; 393 394 GIANT_REQUIRED; 395 396 if (!vn_isdisk(vp, NULL) && vn_canvmio(vp) == FALSE) 397 return (0); 398 399retry: 400 if ((object = vp->v_object) == NULL) { 401 if (vp->v_type == VREG || vp->v_type == VDIR) { 402 if ((error = VOP_GETATTR(vp, &vat, cred, td)) != 0) 403 goto retn; 404 object = vnode_pager_alloc(vp, vat.va_size, 0, 0); 405 } else if (vn_isdisk(vp, NULL)) { 406 /* 407 * This simply allocates the biggest object possible 408 * for a disk vnode. This should be fixed, but doesn't 409 * cause any problems (yet). 410 */ 411 object = vnode_pager_alloc(vp, IDX_TO_OFF(INT_MAX), 0, 0); 412 } else { 413 goto retn; 414 } 415 /* 416 * Dereference the reference we just created. This assumes 417 * that the object is associated with the vp. 418 */ 419 VM_OBJECT_LOCK(object); 420 object->ref_count--; 421 VM_OBJECT_UNLOCK(object); 422 vrele(vp); 423 } else { 424 VM_OBJECT_LOCK(object); 425 if (object->flags & OBJ_DEAD) { 426 VOP_UNLOCK(vp, 0, td); 427 vm_object_set_flag(object, OBJ_DISCONNECTWNT); 428 msleep(object, VM_OBJECT_MTX(object), PDROP | PVM, 429 "vodead", 0); 430 vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, td); 431 goto retry; 432 } 433 VM_OBJECT_UNLOCK(object); 434 } 435 436 KASSERT(vp->v_object != NULL, ("vfs_object_create: NULL object")); 437 vp->v_vflag |= VV_OBJBUF; 438 439retn: 440 return (error); 441} 442 443/* Destroy the VM system object associated with this vnode */ 444int 445vop_stddestroyvobject(ap) 446 struct vop_destroyvobject_args /* { 447 struct vnode *vp; 448 } */ *ap; 449{ 450 struct vnode *vp = ap->a_vp; 451 vm_object_t obj = vp->v_object; 452 453 GIANT_REQUIRED; 454 455 if (obj == NULL) 456 return (0); 457 VM_OBJECT_LOCK(obj); 458 if (obj->ref_count == 0) { 459 /* 460 * vclean() may be called twice. The first time 461 * removes the primary reference to the object, 462 * the second time goes one further and is a 463 * special-case to terminate the object. 464 * 465 * don't double-terminate the object 466 */ 467 if ((obj->flags & OBJ_DEAD) == 0) 468 vm_object_terminate(obj); 469 else 470 VM_OBJECT_UNLOCK(obj); 471 } else { 472 /* 473 * Woe to the process that tries to page now :-). 474 */ 475 vm_pager_deallocate(obj); 476 VM_OBJECT_UNLOCK(obj); 477 } 478 return (0); 479} 480 481/* 482 * Return the underlying VM object. This routine may be called with or 483 * without the vnode interlock held. If called without, the returned 484 * object is not guarenteed to be valid. The syncer typically gets the 485 * object without holding the interlock in order to quickly test whether 486 * it might be dirty before going heavy-weight. vm_object's use zalloc 487 * and thus stable-storage, so this is safe. 488 */ 489int 490vop_stdgetvobject(ap) 491 struct vop_getvobject_args /* { 492 struct vnode *vp; 493 struct vm_object **objpp; 494 } */ *ap; 495{ 496 struct vnode *vp = ap->a_vp; 497 struct vm_object **objpp = ap->a_objpp; 498 499 if (objpp) 500 *objpp = vp->v_object; 501 return (vp->v_object ? 0 : EINVAL); 502} 503 504/* XXX Needs good comment and VOP_BMAP(9) manpage */ 505int 506vop_stdbmap(ap) 507 struct vop_bmap_args /* { 508 struct vnode *a_vp; 509 daddr_t a_bn; 510 struct vnode **a_vpp; 511 daddr_t *a_bnp; 512 int *a_runp; 513 int *a_runb; 514 } */ *ap; 515{ 516 517 if (ap->a_vpp != NULL) 518 *ap->a_vpp = ap->a_vp; 519 if (ap->a_bnp != NULL) 520 *ap->a_bnp = ap->a_bn * btodb(ap->a_vp->v_mount->mnt_stat.f_iosize); 521 if (ap->a_runp != NULL) 522 *ap->a_runp = 0; 523 if (ap->a_runb != NULL) 524 *ap->a_runb = 0; 525 return (0); 526} 527 528int 529vop_stdfsync(ap) 530 struct vop_fsync_args /* { 531 struct vnode *a_vp; 532 struct ucred *a_cred; 533 int a_waitfor; 534 struct thread *a_td; 535 } */ *ap; 536{ 537 struct vnode *vp = ap->a_vp; 538 struct buf *bp; 539 struct bufobj *bo; 540 struct buf *nbp; 541 int s, error = 0; 542 int maxretry = 100; /* large, arbitrarily chosen */ 543 544 VI_LOCK(vp); 545loop1: 546 /* 547 * MARK/SCAN initialization to avoid infinite loops. 548 */ 549 s = splbio(); 550 TAILQ_FOREACH(bp, &vp->v_bufobj.bo_dirty.bv_hd, b_bobufs) { 551 bp->b_vflags &= ~BV_SCANNED; 552 bp->b_error = 0; 553 } 554 splx(s); 555 556 /* 557 * Flush all dirty buffers associated with a block device. 558 */ 559loop2: 560 s = splbio(); 561 TAILQ_FOREACH_SAFE(bp, &vp->v_bufobj.bo_dirty.bv_hd, b_bobufs, nbp) { 562 if ((bp->b_vflags & BV_SCANNED) != 0) 563 continue; 564 bp->b_vflags |= BV_SCANNED; 565 if (BUF_LOCK(bp, LK_EXCLUSIVE | LK_NOWAIT, NULL)) 566 continue; 567 VI_UNLOCK(vp); 568 if ((bp->b_flags & B_DELWRI) == 0) 569 panic("fsync: not dirty"); 570 if ((vp->v_vflag & VV_OBJBUF) && (bp->b_flags & B_CLUSTEROK)) { 571 vfs_bio_awrite(bp); 572 splx(s); 573 } else { 574 bremfree(bp); 575 splx(s); 576 bawrite(bp); 577 } 578 VI_LOCK(vp); 579 goto loop2; 580 } 581 582 /* 583 * If synchronous the caller expects us to completely resolve all 584 * dirty buffers in the system. Wait for in-progress I/O to 585 * complete (which could include background bitmap writes), then 586 * retry if dirty blocks still exist. 587 */ 588 if (ap->a_waitfor == MNT_WAIT) { 589 bo = &vp->v_bufobj; 590 bufobj_wwait(bo, 0, 0); 591 if (bo->bo_dirty.bv_cnt > 0) { 592 /* 593 * If we are unable to write any of these buffers 594 * then we fail now rather than trying endlessly 595 * to write them out. 596 */ 597 TAILQ_FOREACH(bp, &bo->bo_dirty.bv_hd, b_bobufs) 598 if ((error = bp->b_error) == 0) 599 continue; 600 if (error == 0 && --maxretry >= 0) { 601 splx(s); 602 goto loop1; 603 } 604 vprint("fsync: giving up on dirty", vp); 605 error = EAGAIN; 606 } 607 } 608 VI_UNLOCK(vp); 609 splx(s); 610 611 return (error); 612} 613 614/* XXX Needs good comment and more info in the manpage (VOP_GETPAGES(9)). */ 615int 616vop_stdgetpages(ap) 617 struct vop_getpages_args /* { 618 struct vnode *a_vp; 619 vm_page_t *a_m; 620 int a_count; 621 int a_reqpage; 622 vm_ooffset_t a_offset; 623 } */ *ap; 624{ 625 626 return vnode_pager_generic_getpages(ap->a_vp, ap->a_m, 627 ap->a_count, ap->a_reqpage); 628} 629 630/* XXX Needs good comment and more info in the manpage (VOP_PUTPAGES(9)). */ 631int 632vop_stdputpages(ap) 633 struct vop_putpages_args /* { 634 struct vnode *a_vp; 635 vm_page_t *a_m; 636 int a_count; 637 int a_sync; 638 int *a_rtvals; 639 vm_ooffset_t a_offset; 640 } */ *ap; 641{ 642 643 return vnode_pager_generic_putpages(ap->a_vp, ap->a_m, ap->a_count, 644 ap->a_sync, ap->a_rtvals); 645} 646 647/* 648 * vfs default ops 649 * used to fill the vfs function table to get reasonable default return values. 650 */ 651int 652vfs_stdroot (mp, vpp, td) 653 struct mount *mp; 654 struct vnode **vpp; 655 struct thread *td; 656{ 657 658 return (EOPNOTSUPP); 659} 660 661int 662vfs_stdstatfs (mp, sbp, td) 663 struct mount *mp; 664 struct statfs *sbp; 665 struct thread *td; 666{ 667 668 return (EOPNOTSUPP); 669} 670 671int 672vfs_stdvptofh (vp, fhp) 673 struct vnode *vp; 674 struct fid *fhp; 675{ 676 677 return (EOPNOTSUPP); 678} 679 680int 681vfs_stdstart (mp, flags, td) 682 struct mount *mp; 683 int flags; 684 struct thread *td; 685{ 686 687 return (0); 688} 689 690int 691vfs_stdquotactl (mp, cmds, uid, arg, td) 692 struct mount *mp; 693 int cmds; 694 uid_t uid; 695 caddr_t arg; 696 struct thread *td; 697{ 698 699 return (EOPNOTSUPP); 700} 701 702int 703vfs_stdsync(mp, waitfor, cred, td) 704 struct mount *mp; 705 int waitfor; 706 struct ucred *cred; 707 struct thread *td; 708{ 709 struct vnode *vp, *nvp; 710 int error, lockreq, allerror = 0; 711 712 lockreq = LK_EXCLUSIVE | LK_INTERLOCK; 713 if (waitfor != MNT_WAIT) 714 lockreq |= LK_NOWAIT; 715 /* 716 * Force stale buffer cache information to be flushed. 717 */ 718 MNT_ILOCK(mp); 719loop: 720 MNT_VNODE_FOREACH(vp, mp, nvp) { 721 722 VI_LOCK(vp); 723 if (vp->v_bufobj.bo_dirty.bv_cnt == 0) { 724 VI_UNLOCK(vp); 725 continue; 726 } 727 MNT_IUNLOCK(mp); 728 729 if ((error = vget(vp, lockreq, td)) != 0) { 730 MNT_ILOCK(mp); 731 if (error == ENOENT) 732 goto loop; 733 continue; 734 } 735 error = VOP_FSYNC(vp, cred, waitfor, td); 736 if (error) 737 allerror = error; 738 739 VOP_UNLOCK(vp, 0, td); 740 vrele(vp); 741 MNT_ILOCK(mp); 742 } 743 MNT_IUNLOCK(mp); 744 return (allerror); 745} 746 747int 748vfs_stdnosync (mp, waitfor, cred, td) 749 struct mount *mp; 750 int waitfor; 751 struct ucred *cred; 752 struct thread *td; 753{ 754 755 return (0); 756} 757 758int 759vfs_stdvget (mp, ino, flags, vpp) 760 struct mount *mp; 761 ino_t ino; 762 int flags; 763 struct vnode **vpp; 764{ 765 766 return (EOPNOTSUPP); 767} 768 769int 770vfs_stdfhtovp (mp, fhp, vpp) 771 struct mount *mp; 772 struct fid *fhp; 773 struct vnode **vpp; 774{ 775 776 return (EOPNOTSUPP); 777} 778 779int 780vfs_stdinit (vfsp) 781 struct vfsconf *vfsp; 782{ 783 784 return (0); 785} 786 787int 788vfs_stduninit (vfsp) 789 struct vfsconf *vfsp; 790{ 791 792 return(0); 793} 794 795int 796vfs_stdextattrctl(mp, cmd, filename_vp, attrnamespace, attrname, td) 797 struct mount *mp; 798 int cmd; 799 struct vnode *filename_vp; 800 int attrnamespace; 801 const char *attrname; 802 struct thread *td; 803{ 804 805 if (filename_vp != NULL) 806 VOP_UNLOCK(filename_vp, 0, td); 807 return (EOPNOTSUPP); 808} 809 810int 811vfs_stdsysctl(mp, op, req) 812 struct mount *mp; 813 fsctlop_t op; 814 struct sysctl_req *req; 815{ 816 817 return (EOPNOTSUPP); 818} 819 820/* end of vfs default ops */ 821