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 * $DragonFly: src/sys/vfs/ufs/ufs_inode.c,v 1.24 2008/01/02 22:42:37 dillon Exp $ 37 */ 38 39 #include "opt_quota.h" 40 #include "opt_ufs.h" 41 42 #include <sys/param.h> 43 #include <sys/systm.h> 44 #include <sys/vnode.h> 45 #include <sys/mount.h> 46 #include <sys/malloc.h> 47 48 #include "quota.h" 49 #include "inode.h" 50 #include "ufsmount.h" 51 #include "ufs_extern.h" 52 #include "ffs_extern.h" 53 #ifdef UFS_DIRHASH 54 #include "dir.h" 55 #include "dirhash.h" 56 #endif 57 58 int prtactive = 0; /* 1 => print out reclaim of active vnodes */ 59 60 /* 61 * Last reference to an inode. If necessary, write or delete it. 62 * 63 * ufs_inactive(struct vnode *a_vp) 64 */ 65 int 66 ufs_inactive(struct vop_inactive_args *ap) 67 { 68 struct vnode *vp = ap->a_vp; 69 struct inode *ip = VTOI(vp); 70 int mode, error = 0; 71 72 if (prtactive && VREFCNT(vp) > 1) 73 vprint("ufs_inactive: pushing active", vp); 74 75 /* 76 * Ignore inodes related to stale file handles. 77 */ 78 if (ip == NULL || ip->i_mode == 0) 79 goto out; 80 if (ip->i_nlink <= 0 && (vp->v_mount->mnt_flag & MNT_RDONLY) == 0) { 81 #ifdef QUOTA 82 if (!ufs_getinoquota(ip)) 83 (void)ufs_chkiq(ip, -1, NOCRED, FORCE); 84 #endif 85 /* Must have a VM object to truncate */ 86 error = ffs_truncate(vp, (off_t)0, 0, NOCRED); 87 ip->i_rdev = 0; 88 mode = ip->i_mode; 89 ip->i_mode = 0; 90 ip->i_flag |= IN_CHANGE | IN_UPDATE; 91 ffs_vfree(vp, ip->i_number, mode); 92 } 93 if (ip->i_flag & (IN_ACCESS | IN_CHANGE | IN_MODIFIED | IN_UPDATE)) 94 ffs_update(vp, 0); 95 out: 96 /* 97 * If we are done with the inode, reclaim it 98 * so that it can be reused immediately. 99 */ 100 if (ip == NULL || ip->i_mode == 0) 101 vrecycle(vp); 102 return (error); 103 } 104 105 /* 106 * Reclaim an inode so that it can be used for other purposes. 107 * 108 * ufs_reclaim(struct vnode *a_vp) 109 */ 110 int 111 ufs_reclaim(struct vop_reclaim_args *ap) 112 { 113 struct inode *ip; 114 struct vnode *vp = ap->a_vp; 115 struct ufsmount *ump; 116 #ifdef QUOTA 117 int i; 118 #endif 119 120 ump = VFSTOUFS(vp->v_mount); 121 122 if (prtactive && VREFCNT(vp) > 1) 123 vprint("ufs_reclaim: pushing active", vp); 124 ip = VTOI(vp); 125 126 /* 127 * Lazy updates. 128 */ 129 if (ip) { 130 if (ip->i_flag & IN_LAZYMOD) { 131 ip->i_flag |= IN_MODIFIED; 132 ffs_update(vp, 0); 133 } 134 } 135 #ifdef INVARIANTS 136 if (ip && (ip->i_flag & (IN_ACCESS | IN_CHANGE | IN_MODIFIED | IN_UPDATE))) { 137 kprintf("WARNING: INODE %ld flags %08x: modified inode being released!\n", (long)ip->i_number, (int)ip->i_flag); 138 ip->i_flag |= IN_MODIFIED; 139 ffs_update(vp, 0); 140 } 141 #endif 142 /* 143 * Remove the inode from its hash chain and purge namecache 144 * data associated with the vnode. 145 */ 146 vp->v_data = NULL; 147 if (ip) { 148 ufs_ihashrem(ump, ip); 149 if (ip->i_devvp) { 150 vrele(ip->i_devvp); 151 ip->i_devvp = 0; 152 } 153 #ifdef QUOTA 154 for (i = 0; i < MAXQUOTAS; i++) { 155 if (ip->i_dquot[i] != NODQUOT) { 156 ufs_dqrele(vp, ip->i_dquot[i]); 157 ip->i_dquot[i] = NODQUOT; 158 } 159 } 160 #endif 161 #ifdef UFS_DIRHASH 162 if (ip->i_dirhash != NULL) 163 ufsdirhash_free(ip); 164 #endif 165 kfree(ip, VFSTOUFS(vp->v_mount)->um_malloctype); 166 } 167 return (0); 168 } 169