2 * Copyright (c) 1991, 1993, 1994
3 * The Regents of the University of California. All rights reserved.
4 * (c) UNIX System Laboratories, Inc.
5 * All or some portions of this file are derived from material licensed
6 * to the University of California by American Telephone and Telegraph
7 * Co. or Unix System Laboratories, Inc. and are reproduced herein with
8 * the permission of UNIX System Laboratories, Inc.
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
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 * 3. All advertising materials mentioning features or use of this software
19 * must display the following acknowledgement:
20 * This product includes software developed by the University of
21 * California, Berkeley and its contributors.
22 * 4. Neither the name of the University nor the names of its contributors
23 * may be used to endorse or promote products derived from this software
24 * without specific prior written permission.
26 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
29 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
38 * @(#)ufs_vfsops.c 8.8 (Berkeley) 5/20/95
39 * $FreeBSD: src/sys/ufs/ufs/ufs_vfsops.c,v 1.17.2.3 2001/10/14 19:08:16 iedowse Exp $
40 * $DragonFly: src/sys/vfs/ufs/ufs_vfsops.c,v 1.6 2004/03/01 06:33:23 dillon Exp $
43 #include "opt_quota.h"
45 #include <sys/param.h>
46 #include <sys/kernel.h>
47 #include <sys/mount.h>
49 #include <sys/malloc.h>
50 #include <sys/vnode.h>
55 #include "ufs_extern.h"
57 MALLOC_DEFINE(M_UFSMNT, "UFS mount", "UFS mount structure");
59 * Make a filesystem operational.
60 * Nothing to do at the moment.
64 ufs_start(struct mount *mp, int flags, struct thread *td)
70 * Return the root of a filesystem.
80 error = VFS_VGET(mp, (ino_t)ROOTINO, &nvp);
88 * Do operations associated with quotas
91 ufs_quotactl(mp, cmds, uid, arg, td)
101 struct proc *p = td->td_proc;
102 int cmd, type, error;
108 uid = p->p_ucred->cr_ruid;
109 cmd = cmds >> SUBCMDSHIFT;
115 if (uid == p->p_ucred->cr_ruid)
119 if ((error = suser_cred(p->p_ucred, PRISON_ROOT)) != 0)
123 type = cmds & SUBCMDMASK;
124 if ((u_int)type >= MAXQUOTAS)
126 if (vfs_busy(mp, LK_NOWAIT, NULL, td))
132 error = quotaon(td, mp, type, arg);
136 error = quotaoff(td, mp, type);
140 error = setquota(mp, uid, type, arg);
144 error = setuse(mp, uid, type, arg);
148 error = getquota(mp, uid, type, arg);
165 * Initial UFS filesystems, done only once.
169 struct vfsconf *vfsp;
184 * This is the generic part of fhtovp called after the underlying
185 * filesystem has validated the file handle.
187 * Call the VFS_CHECKEXP beforehand to verify access.
190 ufs_fhtovp(mp, ufhp, vpp)
199 error = VFS_VGET(mp, ufhp->ufid_ino, &nvp);
205 if (ip->i_mode == 0 ||
206 ip->i_gen != ufhp->ufid_gen ||
207 (VFSTOUFS(mp)->um_i_effnlink_valid ? ip->i_effnlink :
219 * This is the generic part of fhtovp called after the underlying
220 * filesystem has validated the file handle.
222 * Verify that a host should have access to a filesystem.
225 ufs_check_export(mp, nam, exflagsp, credanonp)
227 struct sockaddr *nam;
229 struct ucred **credanonp;
232 struct ufsmount *ump;;
236 * Get the export permission structure for this <mp, client> tuple.
238 np = vfs_export_lookup(mp, &ump->um_export, nam);
242 *exflagsp = np->netc_exflags;
243 *credanonp = &np->netc_anon;