proc->thread stage 4: rework the VFS and DEVICE subsystems to take thread
[dragonfly.git] / sys / vfs / ufs / ufs_inode.c
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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 $
dadab5e9 40 * $DragonFly: src/sys/vfs/ufs/ufs_inode.c,v 1.3 2003/06/25 03:56:12 dillon Exp $
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41 */
42
43#include "opt_quota.h"
44#include "opt_ufs.h"
45
46#include <sys/param.h>
47#include <sys/vnode.h>
48#include <sys/mount.h>
49#include <sys/malloc.h>
50
51#include <ufs/ufs/quota.h>
52#include <ufs/ufs/inode.h>
53#include <ufs/ufs/ufsmount.h>
54#include <ufs/ufs/ufs_extern.h>
55#ifdef UFS_DIRHASH
56#include <ufs/ufs/dir.h>
57#include <ufs/ufs/dirhash.h>
58#endif
59
60int prtactive = 0; /* 1 => print out reclaim of active vnodes */
61
62/*
63 * Last reference to an inode. If necessary, write or delete it.
64 */
65int
66ufs_inactive(ap)
67 struct vop_inactive_args /* {
68 struct vnode *a_vp;
dadab5e9 69 struct thread *a_td;
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70 } */ *ap;
71{
72 struct vnode *vp = ap->a_vp;
73 struct inode *ip = VTOI(vp);
dadab5e9 74 struct thread *td = ap->a_td;
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75 int mode, error = 0;
76
77 if (prtactive && vp->v_usecount != 0)
78 vprint("ufs_inactive: pushing active", vp);
79
80 /*
81 * Ignore inodes related to stale file handles.
82 */
83 if (ip->i_mode == 0)
84 goto out;
85 if (ip->i_nlink <= 0) {
86#ifdef QUOTA
87 if (!getinoquota(ip))
88 (void)chkiq(ip, -1, NOCRED, FORCE);
89#endif
dadab5e9 90 error = UFS_TRUNCATE(vp, (off_t)0, 0, NOCRED, td);
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91 ip->i_rdev = 0;
92 mode = ip->i_mode;
93 ip->i_mode = 0;
94 ip->i_flag |= IN_CHANGE | IN_UPDATE;
95 UFS_VFREE(vp, ip->i_number, mode);
96 }
97 if (ip->i_flag & (IN_ACCESS | IN_CHANGE | IN_MODIFIED | IN_UPDATE))
98 UFS_UPDATE(vp, 0);
99out:
dadab5e9 100 VOP_UNLOCK(vp, 0, td);
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101 /*
102 * If we are done with the inode, reclaim it
103 * so that it can be reused immediately.
104 */
105 if (ip->i_mode == 0)
dadab5e9 106 vrecycle(vp, (struct simplelock *)0, td);
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107 return (error);
108}
109
110/*
111 * Reclaim an inode so that it can be used for other purposes.
112 */
113int
114ufs_reclaim(ap)
115 struct vop_reclaim_args /* {
116 struct vnode *a_vp;
dadab5e9 117 struct thread *a_td;
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118 } */ *ap;
119{
120 register struct inode *ip;
121 register struct vnode *vp = ap->a_vp;
122#ifdef QUOTA
123 int i;
124#endif
125
126 if (prtactive && vp->v_usecount != 0)
127 vprint("ufs_reclaim: pushing active", vp);
128 ip = VTOI(vp);
129 if (ip->i_flag & IN_LAZYMOD) {
130 ip->i_flag |= IN_MODIFIED;
131 UFS_UPDATE(vp, 0);
132 }
133 /*
134 * Remove the inode from its hash chain.
135 */
136 ufs_ihashrem(ip);
137 /*
138 * Purge old data structures associated with the inode.
139 */
140 cache_purge(vp);
141 if (ip->i_devvp) {
142 vrele(ip->i_devvp);
143 ip->i_devvp = 0;
144 }
145#ifdef QUOTA
146 for (i = 0; i < MAXQUOTAS; i++) {
147 if (ip->i_dquot[i] != NODQUOT) {
148 dqrele(vp, ip->i_dquot[i]);
149 ip->i_dquot[i] = NODQUOT;
150 }
151 }
152#endif
153#ifdef UFS_DIRHASH
154 if (ip->i_dirhash != NULL)
155 ufsdirhash_free(ip);
156#endif
157 FREE(vp->v_data, VFSTOUFS(vp->v_mount)->um_malloctype);
158 vp->v_data = 0;
159 return (0);
160}