Initial import from FreeBSD RELENG_4:
[dragonfly.git] / sys / vfs / ufs / ufs_inode.c
CommitLineData
984263bc
MD
1/*
2 * Copyright (c) 1991, 1993, 1995
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.
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 * 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.
25 *
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
36 * SUCH DAMAGE.
37 *
38 * @(#)ufs_inode.c 8.9 (Berkeley) 5/14/95
39 * $FreeBSD: src/sys/ufs/ufs/ufs_inode.c,v 1.25.2.3 2002/07/05 22:42:31 dillon Exp $
40 */
41
42#include "opt_quota.h"
43#include "opt_ufs.h"
44
45#include <sys/param.h>
46#include <sys/vnode.h>
47#include <sys/mount.h>
48#include <sys/malloc.h>
49
50#include <ufs/ufs/quota.h>
51#include <ufs/ufs/inode.h>
52#include <ufs/ufs/ufsmount.h>
53#include <ufs/ufs/ufs_extern.h>
54#ifdef UFS_DIRHASH
55#include <ufs/ufs/dir.h>
56#include <ufs/ufs/dirhash.h>
57#endif
58
59int prtactive = 0; /* 1 => print out reclaim of active vnodes */
60
61/*
62 * Last reference to an inode. If necessary, write or delete it.
63 */
64int
65ufs_inactive(ap)
66 struct vop_inactive_args /* {
67 struct vnode *a_vp;
68 struct proc *a_p;
69 } */ *ap;
70{
71 struct vnode *vp = ap->a_vp;
72 struct inode *ip = VTOI(vp);
73 struct proc *p = ap->a_p;
74 int mode, error = 0;
75
76 if (prtactive && vp->v_usecount != 0)
77 vprint("ufs_inactive: pushing active", vp);
78
79 /*
80 * Ignore inodes related to stale file handles.
81 */
82 if (ip->i_mode == 0)
83 goto out;
84 if (ip->i_nlink <= 0) {
85#ifdef QUOTA
86 if (!getinoquota(ip))
87 (void)chkiq(ip, -1, NOCRED, FORCE);
88#endif
89 error = UFS_TRUNCATE(vp, (off_t)0, 0, NOCRED, p);
90 ip->i_rdev = 0;
91 mode = ip->i_mode;
92 ip->i_mode = 0;
93 ip->i_flag |= IN_CHANGE | IN_UPDATE;
94 UFS_VFREE(vp, ip->i_number, mode);
95 }
96 if (ip->i_flag & (IN_ACCESS | IN_CHANGE | IN_MODIFIED | IN_UPDATE))
97 UFS_UPDATE(vp, 0);
98out:
99 VOP_UNLOCK(vp, 0, p);
100 /*
101 * If we are done with the inode, reclaim it
102 * so that it can be reused immediately.
103 */
104 if (ip->i_mode == 0)
105 vrecycle(vp, (struct simplelock *)0, p);
106 return (error);
107}
108
109/*
110 * Reclaim an inode so that it can be used for other purposes.
111 */
112int
113ufs_reclaim(ap)
114 struct vop_reclaim_args /* {
115 struct vnode *a_vp;
116 struct proc *a_p;
117 } */ *ap;
118{
119 register struct inode *ip;
120 register struct vnode *vp = ap->a_vp;
121#ifdef QUOTA
122 int i;
123#endif
124
125 if (prtactive && vp->v_usecount != 0)
126 vprint("ufs_reclaim: pushing active", vp);
127 ip = VTOI(vp);
128 if (ip->i_flag & IN_LAZYMOD) {
129 ip->i_flag |= IN_MODIFIED;
130 UFS_UPDATE(vp, 0);
131 }
132 /*
133 * Remove the inode from its hash chain.
134 */
135 ufs_ihashrem(ip);
136 /*
137 * Purge old data structures associated with the inode.
138 */
139 cache_purge(vp);
140 if (ip->i_devvp) {
141 vrele(ip->i_devvp);
142 ip->i_devvp = 0;
143 }
144#ifdef QUOTA
145 for (i = 0; i < MAXQUOTAS; i++) {
146 if (ip->i_dquot[i] != NODQUOT) {
147 dqrele(vp, ip->i_dquot[i]);
148 ip->i_dquot[i] = NODQUOT;
149 }
150 }
151#endif
152#ifdef UFS_DIRHASH
153 if (ip->i_dirhash != NULL)
154 ufsdirhash_free(ip);
155#endif
156 FREE(vp->v_data, VFSTOUFS(vp->v_mount)->um_malloctype);
157 vp->v_data = 0;
158 return (0);
159}