vfs_default.c revision 56272
130489Sphk/* 230489Sphk * Copyright (c) 1989, 1993 330489Sphk * The Regents of the University of California. All rights reserved. 430489Sphk * 530489Sphk * This code is derived from software contributed 630489Sphk * to Berkeley by John Heidemann of the UCLA Ficus project. 730489Sphk * 830489Sphk * Source: * @(#)i405_init.c 2.10 92/04/27 UCLA Ficus project 930489Sphk * 1030489Sphk * Redistribution and use in source and binary forms, with or without 1130489Sphk * modification, are permitted provided that the following conditions 1230489Sphk * are met: 1330489Sphk * 1. Redistributions of source code must retain the above copyright 1430489Sphk * notice, this list of conditions and the following disclaimer. 1530489Sphk * 2. Redistributions in binary form must reproduce the above copyright 1630489Sphk * notice, this list of conditions and the following disclaimer in the 1730489Sphk * documentation and/or other materials provided with the distribution. 1830489Sphk * 3. All advertising materials mentioning features or use of this software 1930489Sphk * must display the following acknowledgement: 2030489Sphk * This product includes software developed by the University of 2130489Sphk * California, Berkeley and its contributors. 2230489Sphk * 4. Neither the name of the University nor the names of its contributors 2330489Sphk * may be used to endorse or promote products derived from this software 2430489Sphk * without specific prior written permission. 2530489Sphk * 2630489Sphk * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 2730489Sphk * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 2830489Sphk * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 2930489Sphk * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 3030489Sphk * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 3130489Sphk * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 3230489Sphk * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 3330489Sphk * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 3430489Sphk * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 3530489Sphk * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 3630489Sphk * SUCH DAMAGE. 3730489Sphk * 3847989Sgpalmer * 3950477Speter * $FreeBSD: head/sys/kern/vfs_default.c 56272 2000-01-19 06:07:34Z rwatson $ 4030489Sphk */ 4130489Sphk 4230489Sphk#include <sys/param.h> 4330489Sphk#include <sys/systm.h> 4444272Sbde#include <sys/buf.h> 4530489Sphk#include <sys/kernel.h> 4631561Sbde#include <sys/lock.h> 4730743Sphk#include <sys/malloc.h> 4851068Salfred#include <sys/mount.h> 4930492Sphk#include <sys/unistd.h> 5030489Sphk#include <sys/vnode.h> 5130743Sphk#include <sys/poll.h> 5230489Sphk 5330489Sphkstatic int vop_nostrategy __P((struct vop_strategy_args *)); 5430489Sphk 5530489Sphk/* 5630489Sphk * This vnode table stores what we want to do if the filesystem doesn't 5730489Sphk * implement a particular VOP. 5830489Sphk * 5930489Sphk * If there is no specific entry here, we will return EOPNOTSUPP. 6030489Sphk * 6130489Sphk */ 6230489Sphk 6330489Sphkvop_t **default_vnodeop_p; 6430489Sphkstatic struct vnodeopv_entry_desc default_vnodeop_entries[] = { 6530492Sphk { &vop_default_desc, (vop_t *) vop_eopnotsupp }, 6630492Sphk { &vop_advlock_desc, (vop_t *) vop_einval }, 6730743Sphk { &vop_bwrite_desc, (vop_t *) vop_stdbwrite }, 6830492Sphk { &vop_close_desc, (vop_t *) vop_null }, 6930492Sphk { &vop_fsync_desc, (vop_t *) vop_null }, 7030492Sphk { &vop_ioctl_desc, (vop_t *) vop_enotty }, 7130496Sphk { &vop_islocked_desc, (vop_t *) vop_noislocked }, 7230739Sphk { &vop_lease_desc, (vop_t *) vop_null }, 7330496Sphk { &vop_lock_desc, (vop_t *) vop_nolock }, 7430492Sphk { &vop_mmap_desc, (vop_t *) vop_einval }, 7530492Sphk { &vop_open_desc, (vop_t *) vop_null }, 7630492Sphk { &vop_pathconf_desc, (vop_t *) vop_einval }, 7730489Sphk { &vop_poll_desc, (vop_t *) vop_nopoll }, 7830492Sphk { &vop_readlink_desc, (vop_t *) vop_einval }, 7930492Sphk { &vop_reallocblks_desc, (vop_t *) vop_eopnotsupp }, 8030489Sphk { &vop_revoke_desc, (vop_t *) vop_revoke }, 8130489Sphk { &vop_strategy_desc, (vop_t *) vop_nostrategy }, 8230496Sphk { &vop_unlock_desc, (vop_t *) vop_nounlock }, 8354803Srwatson { &vop_getacl_desc, (vop_t *) vop_eopnotsupp }, 8454803Srwatson { &vop_setacl_desc, (vop_t *) vop_eopnotsupp }, 8554803Srwatson { &vop_aclcheck_desc, (vop_t *) vop_eopnotsupp }, 8654803Srwatson { &vop_getextattr_desc, (vop_t *) vop_eopnotsupp }, 8754803Srwatson { &vop_setextattr_desc, (vop_t *) vop_eopnotsupp }, 8830489Sphk { NULL, NULL } 8930489Sphk}; 9030489Sphk 9130489Sphkstatic struct vnodeopv_desc default_vnodeop_opv_desc = 9230489Sphk { &default_vnodeop_p, default_vnodeop_entries }; 9330489Sphk 9430489SphkVNODEOP_SET(default_vnodeop_opv_desc); 9530489Sphk 9630489Sphkint 9730492Sphkvop_eopnotsupp(struct vop_generic_args *ap) 9830489Sphk{ 9930489Sphk /* 10030492Sphk printf("vop_notsupp[%s]\n", ap->a_desc->vdesc_name); 10130489Sphk */ 10230489Sphk 10330489Sphk return (EOPNOTSUPP); 10430489Sphk} 10530489Sphk 10630489Sphkint 10730492Sphkvop_ebadf(struct vop_generic_args *ap) 10830489Sphk{ 10930489Sphk 11030492Sphk return (EBADF); 11130492Sphk} 11230492Sphk 11330492Sphkint 11430492Sphkvop_enotty(struct vop_generic_args *ap) 11530492Sphk{ 11630492Sphk 11730492Sphk return (ENOTTY); 11830492Sphk} 11930492Sphk 12030492Sphkint 12130492Sphkvop_einval(struct vop_generic_args *ap) 12230492Sphk{ 12330492Sphk 12430492Sphk return (EINVAL); 12530492Sphk} 12630492Sphk 12730492Sphkint 12830492Sphkvop_null(struct vop_generic_args *ap) 12930492Sphk{ 13030492Sphk 13130492Sphk return (0); 13230492Sphk} 13330492Sphk 13430492Sphkint 13530492Sphkvop_defaultop(struct vop_generic_args *ap) 13630492Sphk{ 13730492Sphk 13830489Sphk return (VOCALL(default_vnodeop_p, ap->a_desc->vdesc_offset, ap)); 13930489Sphk} 14030489Sphk 14141056Speterint 14241056Spetervop_panic(struct vop_generic_args *ap) 14341056Speter{ 14441056Speter 14552970Sphk printf("vop_panic[%s]\n", ap->a_desc->vdesc_name); 14652970Sphk panic("Filesystem goof"); 14752970Sphk return (0); 14841056Speter} 14941056Speter 15046349Salc/* 15146349Salc * vop_nostrategy: 15246349Salc * 15346349Salc * Strategy routine for VFS devices that have none. 15446349Salc * 15546349Salc * B_ERROR and B_INVAL must be cleared prior to calling any strategy 15646349Salc * routine. Typically this is done for a B_READ strategy call. Typically 15746349Salc * B_INVAL is assumed to already be clear prior to a write and should not 15846349Salc * be cleared manually unless you just made the buffer invalid. B_ERROR 15946349Salc * should be cleared either way. 16046349Salc */ 16146349Salc 16230489Sphkstatic int 16330489Sphkvop_nostrategy (struct vop_strategy_args *ap) 16430489Sphk{ 16530489Sphk printf("No strategy for buffer at %p\n", ap->a_bp); 16637384Sjulian vprint("", ap->a_vp); 16730489Sphk vprint("", ap->a_bp->b_vp); 16830489Sphk ap->a_bp->b_flags |= B_ERROR; 16930489Sphk ap->a_bp->b_error = EOPNOTSUPP; 17030489Sphk biodone(ap->a_bp); 17130489Sphk return (EOPNOTSUPP); 17230489Sphk} 17330492Sphk 17430492Sphkint 17530492Sphkvop_stdpathconf(ap) 17630492Sphk struct vop_pathconf_args /* { 17730492Sphk struct vnode *a_vp; 17830492Sphk int a_name; 17930492Sphk int *a_retval; 18030492Sphk } */ *ap; 18130492Sphk{ 18230492Sphk 18330492Sphk switch (ap->a_name) { 18430492Sphk case _PC_LINK_MAX: 18530492Sphk *ap->a_retval = LINK_MAX; 18630492Sphk return (0); 18730492Sphk case _PC_MAX_CANON: 18830492Sphk *ap->a_retval = MAX_CANON; 18930492Sphk return (0); 19030492Sphk case _PC_MAX_INPUT: 19130492Sphk *ap->a_retval = MAX_INPUT; 19230492Sphk return (0); 19330492Sphk case _PC_PIPE_BUF: 19430492Sphk *ap->a_retval = PIPE_BUF; 19530492Sphk return (0); 19630492Sphk case _PC_CHOWN_RESTRICTED: 19730492Sphk *ap->a_retval = 1; 19830492Sphk return (0); 19930492Sphk case _PC_VDISABLE: 20030492Sphk *ap->a_retval = _POSIX_VDISABLE; 20130492Sphk return (0); 20230492Sphk default: 20330492Sphk return (EINVAL); 20430492Sphk } 20530492Sphk /* NOTREACHED */ 20630492Sphk} 20730513Sphk 20830513Sphk/* 20930513Sphk * Standard lock, unlock and islocked functions. 21030513Sphk * 21130513Sphk * These depend on the lock structure being the first element in the 21230513Sphk * inode, ie: vp->v_data points to the the lock! 21330513Sphk */ 21430513Sphkint 21530513Sphkvop_stdlock(ap) 21630513Sphk struct vop_lock_args /* { 21730513Sphk struct vnode *a_vp; 21830513Sphk int a_flags; 21930513Sphk struct proc *a_p; 22030513Sphk } */ *ap; 22130513Sphk{ 22232286Sdyson struct lock *l; 22330513Sphk 22432286Sdyson if ((l = (struct lock *)ap->a_vp->v_data) == NULL) { 22532286Sdyson if (ap->a_flags & LK_INTERLOCK) 22632286Sdyson simple_unlock(&ap->a_vp->v_interlock); 22732286Sdyson return 0; 22832286Sdyson } 22932286Sdyson 23042900Seivind#ifndef DEBUG_LOCKS 23130513Sphk return (lockmgr(l, ap->a_flags, &ap->a_vp->v_interlock, ap->a_p)); 23242900Seivind#else 23342900Seivind return (debuglockmgr(l, ap->a_flags, &ap->a_vp->v_interlock, ap->a_p, 23442900Seivind "vop_stdlock", ap->a_vp->filename, ap->a_vp->line)); 23542900Seivind#endif 23630513Sphk} 23730513Sphk 23830513Sphkint 23930513Sphkvop_stdunlock(ap) 24030513Sphk struct vop_unlock_args /* { 24130513Sphk struct vnode *a_vp; 24230513Sphk int a_flags; 24330513Sphk struct proc *a_p; 24430513Sphk } */ *ap; 24530513Sphk{ 24632286Sdyson struct lock *l; 24730513Sphk 24832286Sdyson if ((l = (struct lock *)ap->a_vp->v_data) == NULL) { 24932286Sdyson if (ap->a_flags & LK_INTERLOCK) 25032286Sdyson simple_unlock(&ap->a_vp->v_interlock); 25132286Sdyson return 0; 25232286Sdyson } 25332286Sdyson 25430513Sphk return (lockmgr(l, ap->a_flags | LK_RELEASE, &ap->a_vp->v_interlock, 25530513Sphk ap->a_p)); 25630513Sphk} 25730513Sphk 25830513Sphkint 25930513Sphkvop_stdislocked(ap) 26030513Sphk struct vop_islocked_args /* { 26130513Sphk struct vnode *a_vp; 26254444Seivind struct proc *a_p; 26330513Sphk } */ *ap; 26430513Sphk{ 26532286Sdyson struct lock *l; 26630513Sphk 26732286Sdyson if ((l = (struct lock *)ap->a_vp->v_data) == NULL) 26832286Sdyson return 0; 26932286Sdyson 27054444Seivind return (lockstatus(l, ap->a_p)); 27130513Sphk} 27230513Sphk 27330743Sphk/* 27430743Sphk * Return true for select/poll. 27530743Sphk */ 27630743Sphkint 27730743Sphkvop_nopoll(ap) 27830743Sphk struct vop_poll_args /* { 27930743Sphk struct vnode *a_vp; 28030743Sphk int a_events; 28130743Sphk struct ucred *a_cred; 28230743Sphk struct proc *a_p; 28330743Sphk } */ *ap; 28430743Sphk{ 28530743Sphk /* 28631727Swollman * Return true for read/write. If the user asked for something 28731727Swollman * special, return POLLNVAL, so that clients have a way of 28831727Swollman * determining reliably whether or not the extended 28931727Swollman * functionality is present without hard-coding knowledge 29031727Swollman * of specific filesystem implementations. 29130743Sphk */ 29231727Swollman if (ap->a_events & ~POLLSTANDARD) 29331727Swollman return (POLLNVAL); 29431727Swollman 29530743Sphk return (ap->a_events & (POLLIN | POLLOUT | POLLRDNORM | POLLWRNORM)); 29630743Sphk} 29730743Sphk 29831727Swollman/* 29931727Swollman * Implement poll for local filesystems that support it. 30031727Swollman */ 30130743Sphkint 30231727Swollmanvop_stdpoll(ap) 30331727Swollman struct vop_poll_args /* { 30431727Swollman struct vnode *a_vp; 30531727Swollman int a_events; 30631727Swollman struct ucred *a_cred; 30731727Swollman struct proc *a_p; 30831727Swollman } */ *ap; 30931727Swollman{ 31031811Swollman if ((ap->a_events & ~POLLSTANDARD) == 0) 31131811Swollman return (ap->a_events & (POLLRDNORM|POLLWRNORM)); 31231727Swollman return (vn_pollrecord(ap->a_vp, ap->a_p, ap->a_events)); 31331727Swollman} 31431727Swollman 31531727Swollmanint 31630743Sphkvop_stdbwrite(ap) 31730743Sphk struct vop_bwrite_args *ap; 31830743Sphk{ 31930743Sphk return (bwrite(ap->a_bp)); 32030743Sphk} 32130743Sphk 32230743Sphk/* 32330743Sphk * Stubs to use when there is no locking to be done on the underlying object. 32430743Sphk * A minimal shared lock is necessary to ensure that the underlying object 32530743Sphk * is not revoked while an operation is in progress. So, an active shared 32630743Sphk * count is maintained in an auxillary vnode lock structure. 32730743Sphk */ 32830743Sphkint 32930743Sphkvop_sharedlock(ap) 33030743Sphk struct vop_lock_args /* { 33130743Sphk struct vnode *a_vp; 33230743Sphk int a_flags; 33330743Sphk struct proc *a_p; 33430743Sphk } */ *ap; 33530743Sphk{ 33630743Sphk /* 33730743Sphk * This code cannot be used until all the non-locking filesystems 33830743Sphk * (notably NFS) are converted to properly lock and release nodes. 33930743Sphk * Also, certain vnode operations change the locking state within 34030743Sphk * the operation (create, mknod, remove, link, rename, mkdir, rmdir, 34130743Sphk * and symlink). Ideally these operations should not change the 34230743Sphk * lock state, but should be changed to let the caller of the 34330743Sphk * function unlock them. Otherwise all intermediate vnode layers 34430743Sphk * (such as union, umapfs, etc) must catch these functions to do 34530743Sphk * the necessary locking at their layer. Note that the inactive 34630743Sphk * and lookup operations also change their lock state, but this 34730743Sphk * cannot be avoided, so these two operations will always need 34830743Sphk * to be handled in intermediate layers. 34930743Sphk */ 35030743Sphk struct vnode *vp = ap->a_vp; 35130743Sphk int vnflags, flags = ap->a_flags; 35230743Sphk 35330743Sphk if (vp->v_vnlock == NULL) { 35430743Sphk if ((flags & LK_TYPE_MASK) == LK_DRAIN) 35530743Sphk return (0); 35630743Sphk MALLOC(vp->v_vnlock, struct lock *, sizeof(struct lock), 35730743Sphk M_VNODE, M_WAITOK); 35834206Sdyson lockinit(vp->v_vnlock, PVFS, "vnlock", 0, LK_NOPAUSE); 35930743Sphk } 36030743Sphk switch (flags & LK_TYPE_MASK) { 36130743Sphk case LK_DRAIN: 36230743Sphk vnflags = LK_DRAIN; 36330743Sphk break; 36430743Sphk case LK_EXCLUSIVE: 36530743Sphk#ifdef DEBUG_VFS_LOCKS 36630743Sphk /* 36730743Sphk * Normally, we use shared locks here, but that confuses 36830743Sphk * the locking assertions. 36930743Sphk */ 37030743Sphk vnflags = LK_EXCLUSIVE; 37130743Sphk break; 37230743Sphk#endif 37330743Sphk case LK_SHARED: 37430743Sphk vnflags = LK_SHARED; 37530743Sphk break; 37630743Sphk case LK_UPGRADE: 37730743Sphk case LK_EXCLUPGRADE: 37830743Sphk case LK_DOWNGRADE: 37930743Sphk return (0); 38030743Sphk case LK_RELEASE: 38130743Sphk default: 38230743Sphk panic("vop_sharedlock: bad operation %d", flags & LK_TYPE_MASK); 38330743Sphk } 38430743Sphk if (flags & LK_INTERLOCK) 38530743Sphk vnflags |= LK_INTERLOCK; 38642900Seivind#ifndef DEBUG_LOCKS 38742900Seivind return (lockmgr(vp->v_vnlock, vnflags, &vp->v_interlock, ap->a_p)); 38842900Seivind#else 38942900Seivind return (debuglockmgr(vp->v_vnlock, vnflags, &vp->v_interlock, ap->a_p, 39042900Seivind "vop_sharedlock", vp->filename, vp->line)); 39142900Seivind#endif 39230743Sphk} 39330743Sphk 39430743Sphk/* 39530743Sphk * Stubs to use when there is no locking to be done on the underlying object. 39630743Sphk * A minimal shared lock is necessary to ensure that the underlying object 39730743Sphk * is not revoked while an operation is in progress. So, an active shared 39830743Sphk * count is maintained in an auxillary vnode lock structure. 39930743Sphk */ 40030743Sphkint 40130743Sphkvop_nolock(ap) 40230743Sphk struct vop_lock_args /* { 40330743Sphk struct vnode *a_vp; 40430743Sphk int a_flags; 40530743Sphk struct proc *a_p; 40630743Sphk } */ *ap; 40730743Sphk{ 40830743Sphk#ifdef notyet 40930743Sphk /* 41030743Sphk * This code cannot be used until all the non-locking filesystems 41130743Sphk * (notably NFS) are converted to properly lock and release nodes. 41230743Sphk * Also, certain vnode operations change the locking state within 41330743Sphk * the operation (create, mknod, remove, link, rename, mkdir, rmdir, 41430743Sphk * and symlink). Ideally these operations should not change the 41530743Sphk * lock state, but should be changed to let the caller of the 41630743Sphk * function unlock them. Otherwise all intermediate vnode layers 41730743Sphk * (such as union, umapfs, etc) must catch these functions to do 41830743Sphk * the necessary locking at their layer. Note that the inactive 41930743Sphk * and lookup operations also change their lock state, but this 42030743Sphk * cannot be avoided, so these two operations will always need 42130743Sphk * to be handled in intermediate layers. 42230743Sphk */ 42330743Sphk struct vnode *vp = ap->a_vp; 42430743Sphk int vnflags, flags = ap->a_flags; 42530743Sphk 42630743Sphk if (vp->v_vnlock == NULL) { 42730743Sphk if ((flags & LK_TYPE_MASK) == LK_DRAIN) 42830743Sphk return (0); 42930743Sphk MALLOC(vp->v_vnlock, struct lock *, sizeof(struct lock), 43030743Sphk M_VNODE, M_WAITOK); 43134206Sdyson lockinit(vp->v_vnlock, PVFS, "vnlock", 0, LK_NOPAUSE); 43230743Sphk } 43330743Sphk switch (flags & LK_TYPE_MASK) { 43430743Sphk case LK_DRAIN: 43530743Sphk vnflags = LK_DRAIN; 43630743Sphk break; 43730743Sphk case LK_EXCLUSIVE: 43830743Sphk case LK_SHARED: 43930743Sphk vnflags = LK_SHARED; 44030743Sphk break; 44130743Sphk case LK_UPGRADE: 44230743Sphk case LK_EXCLUPGRADE: 44330743Sphk case LK_DOWNGRADE: 44430743Sphk return (0); 44530743Sphk case LK_RELEASE: 44630743Sphk default: 44730743Sphk panic("vop_nolock: bad operation %d", flags & LK_TYPE_MASK); 44830743Sphk } 44930743Sphk if (flags & LK_INTERLOCK) 45030743Sphk vnflags |= LK_INTERLOCK; 45130743Sphk return(lockmgr(vp->v_vnlock, vnflags, &vp->v_interlock, ap->a_p)); 45230743Sphk#else /* for now */ 45330743Sphk /* 45430743Sphk * Since we are not using the lock manager, we must clear 45530743Sphk * the interlock here. 45630743Sphk */ 45731263Sbde if (ap->a_flags & LK_INTERLOCK) 45830743Sphk simple_unlock(&ap->a_vp->v_interlock); 45930743Sphk return (0); 46030743Sphk#endif 46130743Sphk} 46230743Sphk 46330743Sphk/* 46430743Sphk * Do the inverse of vop_nolock, handling the interlock in a compatible way. 46530743Sphk */ 46630743Sphkint 46730743Sphkvop_nounlock(ap) 46830743Sphk struct vop_unlock_args /* { 46930743Sphk struct vnode *a_vp; 47030743Sphk int a_flags; 47130743Sphk struct proc *a_p; 47230743Sphk } */ *ap; 47330743Sphk{ 47430743Sphk struct vnode *vp = ap->a_vp; 47530743Sphk 47630743Sphk if (vp->v_vnlock == NULL) { 47730743Sphk if (ap->a_flags & LK_INTERLOCK) 47830743Sphk simple_unlock(&ap->a_vp->v_interlock); 47930743Sphk return (0); 48030743Sphk } 48130743Sphk return (lockmgr(vp->v_vnlock, LK_RELEASE | ap->a_flags, 48230743Sphk &ap->a_vp->v_interlock, ap->a_p)); 48330743Sphk} 48430743Sphk 48530743Sphk/* 48630743Sphk * Return whether or not the node is in use. 48730743Sphk */ 48830743Sphkint 48930743Sphkvop_noislocked(ap) 49030743Sphk struct vop_islocked_args /* { 49130743Sphk struct vnode *a_vp; 49254444Seivind struct proc *a_p; 49330743Sphk } */ *ap; 49430743Sphk{ 49530743Sphk struct vnode *vp = ap->a_vp; 49630743Sphk 49730743Sphk if (vp->v_vnlock == NULL) 49830743Sphk return (0); 49954444Seivind return (lockstatus(vp->v_vnlock, ap->a_p)); 50030743Sphk} 50130743Sphk 50251068Salfred/* 50351068Salfred * vfs default ops 50451068Salfred * used to fill the vfs fucntion table to get reasonable default return values. 50551068Salfred */ 50651068Salfredint 50751068Salfredvfs_stdmount (mp, path, data, ndp, p) 50851068Salfred struct mount *mp; 50951068Salfred char *path; 51051068Salfred caddr_t data; 51151068Salfred struct nameidata *ndp; 51251068Salfred struct proc *p; 51351068Salfred{ 51451068Salfred return (0); 51551068Salfred} 51651068Salfred 51751068Salfredint 51851068Salfredvfs_stdunmount (mp, mntflags, p) 51951068Salfred struct mount *mp; 52051068Salfred int mntflags; 52151068Salfred struct proc *p; 52251068Salfred{ 52351068Salfred return (0); 52451068Salfred} 52551068Salfred 52651068Salfredint 52751068Salfredvfs_stdroot (mp, vpp) 52851068Salfred struct mount *mp; 52951068Salfred struct vnode **vpp; 53051068Salfred{ 53151068Salfred return (EOPNOTSUPP); 53251068Salfred} 53351068Salfred 53451068Salfredint 53551068Salfredvfs_stdstatfs (mp, sbp, p) 53651068Salfred struct mount *mp; 53751068Salfred struct statfs *sbp; 53851068Salfred struct proc *p; 53951068Salfred{ 54051068Salfred return (EOPNOTSUPP); 54151068Salfred} 54251068Salfred 54351068Salfredint 54451068Salfredvfs_stdvptofh (vp, fhp) 54551068Salfred struct vnode *vp; 54651068Salfred struct fid *fhp; 54751068Salfred{ 54851068Salfred return (EOPNOTSUPP); 54951068Salfred} 55051068Salfred 55151068Salfredint 55251068Salfredvfs_stdstart (mp, flags, p) 55351068Salfred struct mount *mp; 55451068Salfred int flags; 55551068Salfred struct proc *p; 55651068Salfred{ 55751068Salfred return (0); 55851068Salfred} 55951068Salfred 56051068Salfredint 56151068Salfredvfs_stdquotactl (mp, cmds, uid, arg, p) 56251068Salfred struct mount *mp; 56351068Salfred int cmds; 56451068Salfred uid_t uid; 56551068Salfred caddr_t arg; 56651068Salfred struct proc *p; 56751068Salfred{ 56851068Salfred return (EOPNOTSUPP); 56951068Salfred} 57051068Salfred 57151068Salfredint 57251068Salfredvfs_stdsync (mp, waitfor, cred, p) 57351068Salfred struct mount *mp; 57451068Salfred int waitfor; 57551068Salfred struct ucred *cred; 57651068Salfred struct proc *p; 57751068Salfred{ 57851068Salfred return (0); 57951068Salfred} 58051068Salfred 58151068Salfredint 58251068Salfredvfs_stdvget (mp, ino, vpp) 58351068Salfred struct mount *mp; 58451068Salfred ino_t ino; 58551068Salfred struct vnode **vpp; 58651068Salfred{ 58751068Salfred return (EOPNOTSUPP); 58851068Salfred} 58951068Salfred 59051068Salfredint 59151138Salfredvfs_stdfhtovp (mp, fhp, vpp) 59251068Salfred struct mount *mp; 59351068Salfred struct fid *fhp; 59451138Salfred struct vnode **vpp; 59551138Salfred{ 59651138Salfred return (EOPNOTSUPP); 59751138Salfred} 59851138Salfred 59951138Salfredint 60051138Salfredvfs_stdcheckexp (mp, nam, extflagsp, credanonp) 60151138Salfred struct mount *mp; 60251068Salfred struct sockaddr *nam; 60351138Salfred int *extflagsp; 60451068Salfred struct ucred **credanonp; 60551068Salfred{ 60651068Salfred return (EOPNOTSUPP); 60751068Salfred} 60851068Salfred 60951068Salfredint 61051068Salfredvfs_stdinit (vfsp) 61151068Salfred struct vfsconf *vfsp; 61251068Salfred{ 61351068Salfred return (0); 61451068Salfred} 61551068Salfred 61651068Salfredint 61751068Salfredvfs_stduninit (vfsp) 61851068Salfred struct vfsconf *vfsp; 61951068Salfred{ 62051068Salfred return(0); 62151068Salfred} 62251068Salfred 62354803Srwatsonint 62454803Srwatsonvfs_stdextattrctl(mp, cmd, attrname, arg, p) 62554803Srwatson struct mount *mp; 62654803Srwatson int cmd; 62756272Srwatson const char *attrname; 62854803Srwatson caddr_t arg; 62954803Srwatson struct proc *p; 63054803Srwatson{ 63154803Srwatson return(EOPNOTSUPP); 63254803Srwatson} 63354803Srwatson 63451068Salfred/* end of vfs default ops */ 635