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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 8.8 (Berkeley) 5/20/95
* $FreeBSD$
*/
#include "opt_quota.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/lock.h>
#include <sys/malloc.h>
#include <sys/mount.h>
#include <sys/proc.h>
#include <sys/socket.h>
#include <sys/vnode.h>
#include <ufs/ufs/extattr.h>
#include <ufs/ufs/quota.h>
#include <ufs/ufs/inode.h>
#include <ufs/ufs/ufsmount.h>
#include <ufs/ufs/ufs_extern.h>
MALLOC_DEFINE(M_UFSMNT, "UFS mount", "UFS mount structure");
/*
* Make a filesystem operational.
* Nothing to do at the moment.
*/
/* ARGSUSED */
int
ufs_start(mp, flags, td)
struct mount *mp;
int flags;
struct thread *td;
{
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, td)
struct mount *mp;
int cmds;
uid_t uid;
caddr_t arg;
struct thread *td;
{
#ifndef QUOTA
return (EOPNOTSUPP);
#else
int cmd, type, error;
if (uid == -1)
uid = td->td_ucred->cr_ruid;
cmd = cmds >> SUBCMDSHIFT;
switch (cmd) {
case Q_SYNC:
break;
case Q_GETQUOTA:
if (uid == td->td_ucred->cr_ruid)
break;
/* fall through */
default:
if ((error = suser_xxx(0, td->td_proc, PRISON_ROOT)) != 0)
return (error);
}
type = cmds & SUBCMDMASK;
if ((u_int)type >= MAXQUOTAS)
return (EINVAL);
if (vfs_busy(mp, LK_NOWAIT, 0, td))
return (0);
switch (cmd) {
case Q_QUOTAON:
error = quotaon(td, mp, type, arg);
break;
case Q_QUOTAOFF:
error = quotaoff(td, mp, type);
break;
case Q_SETQUOTA:
error = setquota(mp, uid, type, arg);
break;
case Q_SETUSE:
error = setuse(mp, uid, type, arg);
break;
case Q_GETQUOTA:
error = getquota(mp, uid, type, arg);
break;
case Q_SYNC:
error = qsync(mp);
break;
default:
error = EINVAL;
break;
}
vfs_unbusy(mp, td);
return (error);
#endif
}
/*
* Initial UFS filesystems, done only once.
*/
int
ufs_init(vfsp)
struct vfsconf *vfsp;
{
static int done;
if (done)
return (0);
done = 1;
ufs_ihashinit();
#ifdef QUOTA
dqinit();
#endif
return (0);
}
/*
* This is the generic part of fhtovp called after the underlying
* filesystem has validated the file handle.
*
* Call the VFS_CHECKEXP beforehand to verify access.
*/
int
ufs_fhtovp(mp, ufhp, vpp)
register struct mount *mp;
struct ufid *ufhp;
struct vnode **vpp;
{
register struct inode *ip;
struct vnode *nvp;
int error;
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 ||
(VFSTOUFS(mp)->um_i_effnlink_valid ? ip->i_effnlink :
ip->i_nlink) <= 0) {
vput(nvp);
*vpp = NULLVP;
return (ESTALE);
}
*vpp = nvp;
return (0);
}
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