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/*
* Copyright (c) 1991, 1993, 1994
* The Regents of the University of California. All rights reserved.
* (c) UNIX System Laboratories, Inc.
* All or some portions of this file are derived from material licensed
* to the University of California by American Telephone and Telegraph
* Co. or Unix System Laboratories, Inc. and are reproduced herein with
* the permission of UNIX System Laboratories, Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* @(#)ufs_vfsops.c 8.4 (Berkeley) 4/16/94
* $Id: ufs_vfsops.c,v 1.4 1995/03/10 22:06:39 davidg Exp $
*/
#include "opt_quota.h"
#include <sys/param.h>
#include <sys/mbuf.h>
#include <sys/mount.h>
#include <sys/proc.h>
#include <sys/buf.h>
#include <sys/vnode.h>
#include <sys/malloc.h>
#include <miscfs/specfs/specdev.h>
#include <ufs/ufs/quota.h>
#include <ufs/ufs/inode.h>
#include <ufs/ufs/ufsmount.h>
#include <ufs/ufs/ufs_extern.h>
/*
* Flag to permit forcible unmounting.
*/
int doforce = 1;
/*
* Make a filesystem operational.
* Nothing to do at the moment.
*/
/* ARGSUSED */
int
ufs_start(mp, flags, p)
struct mount *mp;
int flags;
struct proc *p;
{
return (0);
}
/*
* Return the root of a filesystem.
*/
int
ufs_root(mp, vpp)
struct mount *mp;
struct vnode **vpp;
{
struct vnode *nvp;
int error;
error = VFS_VGET(mp, (ino_t)ROOTINO, &nvp);
if (error)
return (error);
*vpp = nvp;
return (0);
}
/*
* Do operations associated with quotas
*/
int
ufs_quotactl(mp, cmds, uid, arg, p)
struct mount *mp;
int cmds;
uid_t uid;
caddr_t arg;
struct proc *p;
{
#ifndef QUOTA
return (EOPNOTSUPP);
#else
int cmd, type, error;
if (uid == -1)
uid = p->p_cred->p_ruid;
cmd = cmds >> SUBCMDSHIFT;
switch (cmd) {
case Q_SYNC:
break;
case Q_GETQUOTA:
if (uid == p->p_cred->p_ruid)
break;
/* fall through */
default:
if (error = suser(p->p_ucred, &p->p_acflag))
return (error);
}
type = cmds & SUBCMDMASK;
if ((u_int)type >= MAXQUOTAS)
return (EINVAL);
switch (cmd) {
case Q_QUOTAON:
return (quotaon(p, mp, type, arg));
case Q_QUOTAOFF:
if (vfs_busy(mp))
return (0);
error = quotaoff(p, mp, type);
vfs_unbusy(mp);
return (error);
case Q_SETQUOTA:
return (setquota(mp, uid, type, arg));
case Q_SETUSE:
return (setuse(mp, uid, type, arg));
case Q_GETQUOTA:
return (getquota(mp, uid, type, arg));
case Q_SYNC:
if (vfs_busy(mp))
return (0);
error = qsync(mp);
vfs_unbusy(mp);
return (error);
default:
return (EINVAL);
}
/* NOTREACHED */
#endif
}
/*
* This is the generic part of fhtovp called after the underlying
* filesystem has validated the file handle.
*
* Verify that a host should have access to a filesystem, and if so
* return a vnode for the presented file handle.
*/
int
ufs_check_export(mp, ufhp, nam, vpp, exflagsp, credanonp)
register struct mount *mp;
struct ufid *ufhp;
struct mbuf *nam;
struct vnode **vpp;
int *exflagsp;
struct ucred **credanonp;
{
register struct inode *ip;
register struct netcred *np;
register struct ufsmount *ump = VFSTOUFS(mp);
struct vnode *nvp;
int error;
/*
* Get the export permission structure for this <mp, client> tuple.
*/
np = vfs_export_lookup(mp, &ump->um_export, nam);
if (np == NULL)
return (EACCES);
error = VFS_VGET(mp, ufhp->ufid_ino, &nvp);
if (error) {
*vpp = NULLVP;
return (error);
}
ip = VTOI(nvp);
if (ip->i_mode == 0 || ip->i_gen != ufhp->ufid_gen) {
vput(nvp);
*vpp = NULLVP;
return (ESTALE);
}
*vpp = nvp;
*exflagsp = np->netc_exflags;
*credanonp = &np->netc_anon;
return (0);
}
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