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. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 * 34 * @(#)ufs_inode.c 8.9 (Berkeley) 5/14/95 35 * $FreeBSD: src/sys/ufs/ufs/ufs_inode.c,v 1.25.2.3 2002/07/05 22:42:31 dillon Exp $ 36 */ 37 38 #include "opt_quota.h" 39 #include "opt_ufs.h" 40 41 #include <sys/param.h> 42 #include <sys/systm.h> 43 #include <sys/vnode.h> 44 #include <sys/mount.h> 45 #include <sys/malloc.h> 46 47 #include "quota.h" 48 #include "inode.h" 49 #include "ufsmount.h" 50 #include "ufs_extern.h" 51 #include "ffs_extern.h" 52 #ifdef UFS_DIRHASH 53 #include "dir.h" 54 #include "dirhash.h" 55 #endif 56 57 /* 58 * Last reference to an inode. If necessary, write or delete it. 59 * 60 * ufs_inactive(struct vnode *a_vp) 61 */ 62 int 63 ufs_inactive(struct vop_inactive_args *ap) 64 { 65 struct vnode *vp = ap->a_vp; 66 struct inode *ip = VTOI(vp); 67 int mode, error = 0; 68 69 if (prtactive && VREFCNT(vp) > 1) 70 vprint("ufs_inactive: pushing active", vp); 71 72 /* 73 * Ignore inodes related to stale file handles. 74 */ 75 if (ip == NULL || ip->i_mode == 0) 76 goto out; 77 if (ip->i_nlink <= 0 && (vp->v_mount->mnt_flag & MNT_RDONLY) == 0) { 78 #ifdef QUOTA 79 if (!ufs_getinoquota(ip)) 80 (void)ufs_chkiq(ip, -1, NOCRED, FORCE); 81 #endif 82 /* Must have a VM object to truncate */ 83 error = ffs_truncate(vp, (off_t)0, 0, NOCRED); 84 ip->i_rdev = 0; 85 mode = ip->i_mode; 86 ip->i_mode = 0; 87 ip->i_flag |= IN_CHANGE | IN_UPDATE; 88 ffs_vfree(vp, ip->i_number, mode); 89 } 90 if (ip->i_flag & (IN_ACCESS | IN_CHANGE | IN_MODIFIED | IN_UPDATE)) 91 ffs_update(vp, 0); 92 out: 93 /* 94 * If we are done with the inode, reclaim it 95 * so that it can be reused immediately. 96 */ 97 if (ip == NULL || ip->i_mode == 0) 98 vrecycle(vp); 99 return (error); 100 } 101 102 /* 103 * Reclaim an inode so that it can be used for other purposes. 104 * 105 * ufs_reclaim(struct vnode *a_vp) 106 */ 107 int 108 ufs_reclaim(struct vop_reclaim_args *ap) 109 { 110 struct inode *ip; 111 struct vnode *vp = ap->a_vp; 112 struct ufsmount *ump; 113 #ifdef QUOTA 114 int i; 115 #endif 116 117 ump = VFSTOUFS(vp->v_mount); 118 119 if (prtactive && VREFCNT(vp) > 1) 120 vprint("ufs_reclaim: pushing active", vp); 121 ip = VTOI(vp); 122 123 /* 124 * Lazy updates. 125 */ 126 if (ip) { 127 if (ip->i_flag & IN_LAZYMOD) { 128 ip->i_flag |= IN_MODIFIED; 129 ffs_update(vp, 0); 130 } 131 } 132 #ifdef INVARIANTS 133 if (ip && (ip->i_flag & (IN_ACCESS | IN_CHANGE | IN_MODIFIED | IN_UPDATE))) { 134 kprintf("WARNING: INODE %ld flags %08x: modified inode being released!\n", (long)ip->i_number, (int)ip->i_flag); 135 ip->i_flag |= IN_MODIFIED; 136 ffs_update(vp, 0); 137 } 138 #endif 139 /* 140 * Remove the inode from its hash chain and purge namecache 141 * data associated with the vnode. 142 */ 143 vp->v_data = NULL; 144 if (ip) { 145 ufs_ihashrem(ump, ip); 146 if (ip->i_devvp) { 147 vrele(ip->i_devvp); 148 ip->i_devvp = 0; 149 } 150 #ifdef QUOTA 151 for (i = 0; i < MAXQUOTAS; i++) { 152 if (ip->i_dquot[i] != NODQUOT) { 153 ufs_dqrele(vp, ip->i_dquot[i]); 154 ip->i_dquot[i] = NODQUOT; 155 } 156 } 157 #endif 158 #ifdef UFS_DIRHASH 159 if (ip->i_dirhash != NULL) 160 ufsdirhash_free(ip); 161 #endif 162 kfree(ip, VFSTOUFS(vp->v_mount)->um_malloctype); 163 } 164 return (0); 165 } 166