1 /* $OpenBSD: ufs_inode.c,v 1.47 2024/07/13 14:37:56 beck Exp $ */
2 /* $NetBSD: ufs_inode.c,v 1.7 1996/05/11 18:27:52 mycroft Exp $ */
3
4 /*
5 * Copyright (c) 1991, 1993
6 * The Regents of the University of California. All rights reserved.
7 * (c) UNIX System Laboratories, Inc.
8 * All or some portions of this file are derived from material licensed
9 * to the University of California by American Telephone and Telegraph
10 * Co. or Unix System Laboratories, Inc. and are reproduced herein with
11 * the permission of UNIX System Laboratories, Inc.
12 *
13 * Redistribution and use in source and binary forms, with or without
14 * modification, are permitted provided that the following conditions
15 * are met:
16 * 1. Redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer.
18 * 2. Redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions and the following disclaimer in the
20 * documentation and/or other materials provided with the distribution.
21 * 3. Neither the name of the University nor the names of its contributors
22 * may be used to endorse or promote products derived from this software
23 * without specific prior written permission.
24 *
25 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
27 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
28 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
30 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
31 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
32 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
33 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
34 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
35 * SUCH DAMAGE.
36 *
37 * @(#)ufs_inode.c 8.7 (Berkeley) 7/22/94
38 */
39
40 #include <sys/param.h>
41 #include <sys/systm.h>
42 #include <sys/vnode.h>
43 #include <sys/mount.h>
44 #include <sys/malloc.h>
45 #include <sys/namei.h>
46
47 #include <ufs/ufs/quota.h>
48 #include <ufs/ufs/inode.h>
49 #include <ufs/ufs/ufsmount.h>
50 #include <ufs/ufs/ufs_extern.h>
51 #ifdef UFS_DIRHASH
52 #include <ufs/ufs/dir.h>
53 #include <ufs/ufs/dirhash.h>
54 #endif
55
56 /*
57 * Last reference to an inode. If necessary, write or delete it.
58 */
59 int
ufs_inactive(void * v)60 ufs_inactive(void *v)
61 {
62 struct vop_inactive_args *ap = v;
63 struct vnode *vp = ap->a_vp;
64 struct inode *ip = VTOI(vp);
65 mode_t mode;
66 int error = 0;
67 #ifdef DIAGNOSTIC
68 extern int prtactive;
69
70 if (prtactive && vp->v_usecount != 0)
71 vprint("ufs_inactive: pushing active", vp);
72 #endif
73
74 /*
75 * Ignore inodes related to stale file handles.
76 */
77 if (ip->i_din1 == NULL || DIP(ip, mode) == 0)
78 goto out;
79
80 if (DIP(ip, nlink) <= 0 && (vp->v_mount->mnt_flag & MNT_RDONLY) == 0) {
81 if (getinoquota(ip) == 0)
82 (void)ufs_quota_free_inode(ip, NOCRED);
83
84 error = UFS_TRUNCATE(ip, (off_t)0, 0, NOCRED);
85
86 DIP_ASSIGN(ip, rdev, 0);
87 mode = DIP(ip, mode);
88 DIP_ASSIGN(ip, mode, 0);
89 ip->i_flag |= IN_CHANGE | IN_UPDATE;
90
91 UFS_INODE_FREE(ip, ip->i_number, mode);
92 }
93
94 if (ip->i_flag & (IN_ACCESS | IN_CHANGE | IN_MODIFIED | IN_UPDATE)) {
95 UFS_UPDATE(ip, 0);
96 }
97 out:
98 VOP_UNLOCK(vp);
99
100 /*
101 * If we are done with the inode, reclaim it
102 * so that it can be reused immediately.
103 */
104 if (ip->i_din1 == NULL || DIP(ip, mode) == 0)
105 vrecycle(vp, ap->a_p);
106
107 return (error);
108 }
109
110 /*
111 * Reclaim an inode so that it can be used for other purposes.
112 */
113 int
ufs_reclaim(struct vnode * vp)114 ufs_reclaim(struct vnode *vp)
115 {
116 struct inode *ip;
117 #ifdef DIAGNOSTIC
118 extern int prtactive;
119
120 if (prtactive && vp->v_usecount != 0)
121 vprint("ufs_reclaim: pushing active", vp);
122 #endif
123
124 ip = VTOI(vp);
125
126 /*
127 * Stop deferring timestamp writes
128 */
129 if (ip->i_flag & IN_LAZYMOD) {
130 ip->i_flag |= IN_MODIFIED;
131 UFS_UPDATE(ip, 0);
132 }
133
134 /*
135 * Remove the inode from its hash chain.
136 */
137 ufs_ihashrem(ip);
138 /*
139 * Purge old data structures associated with the inode.
140 */
141 cache_purge(vp);
142
143 if (ip->i_devvp) {
144 vrele(ip->i_devvp);
145 }
146 #ifdef UFS_DIRHASH
147 if (ip->i_dirhash != NULL)
148 ufsdirhash_free(ip);
149 #endif
150 ufs_quota_delete(ip);
151 return (0);
152 }
153