| 1 | /* $NetBSD: ufs_wapbl.c,v 1.23 2012/01/27 19:22:50 para Exp $ */ |
| 2 | |
| 3 | /*- |
| 4 | * Copyright (c) 2003,2006,2008 The NetBSD Foundation, Inc. |
| 5 | * All rights reserved. |
| 6 | * |
| 7 | * This code is derived from software contributed to The NetBSD Foundation |
| 8 | * by Wasabi Systems, 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 | * |
| 19 | * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS |
| 20 | * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED |
| 21 | * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| 22 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS |
| 23 | * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| 24 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| 25 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| 26 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| 27 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| 28 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| 29 | * POSSIBILITY OF SUCH DAMAGE. |
| 30 | */ |
| 31 | |
| 32 | /* |
| 33 | * Copyright (c) 1982, 1986, 1989, 1993, 1995 |
| 34 | * The Regents of the University of California. All rights reserved. |
| 35 | * (c) UNIX System Laboratories, Inc. |
| 36 | * All or some portions of this file are derived from material licensed |
| 37 | * to the University of California by American Telephone and Telegraph |
| 38 | * Co. or Unix System Laboratories, Inc. and are reproduced herein with |
| 39 | * the permission of UNIX System Laboratories, Inc. |
| 40 | * |
| 41 | * Redistribution and use in source and binary forms, with or without |
| 42 | * modification, are permitted provided that the following conditions |
| 43 | * are met: |
| 44 | * 1. Redistributions of source code must retain the above copyright |
| 45 | * notice, this list of conditions and the following disclaimer. |
| 46 | * 2. Redistributions in binary form must reproduce the above copyright |
| 47 | * notice, this list of conditions and the following disclaimer in the |
| 48 | * documentation and/or other materials provided with the distribution. |
| 49 | * 3. Neither the name of the University nor the names of its contributors |
| 50 | * may be used to endorse or promote products derived from this software |
| 51 | * without specific prior written permission. |
| 52 | * |
| 53 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
| 54 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 55 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 56 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
| 57 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 58 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 59 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 60 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 61 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 62 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 63 | * SUCH DAMAGE. |
| 64 | * |
| 65 | * @(#)ufs_vnops.c 8.28 (Berkeley) 7/31/95 |
| 66 | */ |
| 67 | |
| 68 | #include <sys/cdefs.h> |
| 69 | __KERNEL_RCSID(0, "$NetBSD: ufs_wapbl.c,v 1.23 2012/01/27 19:22:50 para Exp $" ); |
| 70 | |
| 71 | #include <sys/param.h> |
| 72 | #include <sys/systm.h> |
| 73 | #include <sys/namei.h> |
| 74 | #include <sys/resourcevar.h> |
| 75 | #include <sys/kernel.h> |
| 76 | #include <sys/file.h> |
| 77 | #include <sys/stat.h> |
| 78 | #include <sys/buf.h> |
| 79 | #include <sys/proc.h> |
| 80 | #include <sys/mount.h> |
| 81 | #include <sys/vnode.h> |
| 82 | #include <sys/dirent.h> |
| 83 | #include <sys/lockf.h> |
| 84 | #include <sys/kauth.h> |
| 85 | #include <sys/wapbl.h> |
| 86 | #include <sys/fstrans.h> |
| 87 | |
| 88 | #include <miscfs/specfs/specdev.h> |
| 89 | #include <miscfs/fifofs/fifo.h> |
| 90 | |
| 91 | #include <ufs/ufs/quota.h> |
| 92 | #include <ufs/ufs/inode.h> |
| 93 | #include <ufs/ufs/dir.h> |
| 94 | #include <ufs/ufs/ufsmount.h> |
| 95 | #include <ufs/ufs/ufs_bswap.h> |
| 96 | #include <ufs/ufs/ufs_extern.h> |
| 97 | #include <ufs/ufs/ufs_wapbl.h> |
| 98 | #include <ufs/ext2fs/ext2fs_extern.h> |
| 99 | #include <ufs/lfs/lfs_extern.h> |
| 100 | |
| 101 | #include <uvm/uvm.h> |
| 102 | |
| 103 | #ifdef WAPBL_DEBUG_INODES |
| 104 | #error WAPBL_DEBUG_INODES: not functional before ufs_wapbl.c is updated |
| 105 | void |
| 106 | ufs_wapbl_verify_inodes(struct mount *mp, const char *str) |
| 107 | { |
| 108 | struct vnode *vp, *nvp; |
| 109 | struct inode *ip; |
| 110 | struct buf *bp, *nbp; |
| 111 | |
| 112 | mutex_enter(&mntvnode_lock); |
| 113 | loop: |
| 114 | TAILQ_FOREACH_REVERSE(vp, &mp->mnt_vnodelist, vnodelst, v_mntvnodes) { |
| 115 | /* |
| 116 | * If the vnode that we are about to sync is no longer |
| 117 | * associated with this mount point, start over. |
| 118 | */ |
| 119 | if (vp->v_mount != mp) |
| 120 | goto loop; |
| 121 | mutex_enter(&vp->v_interlock); |
| 122 | nvp = TAILQ_NEXT(vp, v_mntvnodes); |
| 123 | ip = VTOI(vp); |
| 124 | if (vp->v_type == VNON) { |
| 125 | mutex_exit(&vp->v_interlock); |
| 126 | continue; |
| 127 | } |
| 128 | /* verify that update has been called on all inodes */ |
| 129 | if (ip->i_flag & (IN_CHANGE | IN_UPDATE)) { |
| 130 | panic("wapbl_verify: mp %p: dirty vnode %p (inode %p): 0x%x\n" , |
| 131 | mp, vp, ip, ip->i_flag); |
| 132 | } |
| 133 | mutex_exit(&mntvnode_lock); |
| 134 | |
| 135 | mutex_enter(&bufcache_lock); |
| 136 | for (bp = LIST_FIRST(&vp->v_dirtyblkhd); bp; bp = nbp) { |
| 137 | nbp = LIST_NEXT(bp, b_vnbufs); |
| 138 | if ((bp->b_cflags & BC_BUSY)) { |
| 139 | continue; |
| 140 | } |
| 141 | KASSERT((bp->b_oflags & BO_DELWRI) != 0); |
| 142 | KASSERT((bp->b_flags & B_LOCKED) != 0); |
| 143 | } |
| 144 | mutex_exit(&bufcache_lock); |
| 145 | mutex_exit(&vp->v_interlock); |
| 146 | |
| 147 | mutex_enter(&mntvnode_lock); |
| 148 | } |
| 149 | mutex_exit(&mntvnode_lock); |
| 150 | |
| 151 | vp = VFSTOUFS(mp)->um_devvp; |
| 152 | mutex_enter(&vp->v_interlock); |
| 153 | mutex_enter(&bufcache_lock); |
| 154 | for (bp = LIST_FIRST(&vp->v_dirtyblkhd); bp; bp = nbp) { |
| 155 | nbp = LIST_NEXT(bp, b_vnbufs); |
| 156 | if ((bp->b_cflags & BC_BUSY)) { |
| 157 | continue; |
| 158 | } |
| 159 | KASSERT((bp->b_oflags & BO_DELWRI) != 0); |
| 160 | KASSERT((bp->b_flags & B_LOCKED) != 0); |
| 161 | } |
| 162 | mutex_exit(&bufcache_lock); |
| 163 | mutex_exit(&vp->v_interlock); |
| 164 | } |
| 165 | #endif /* WAPBL_DEBUG_INODES */ |
| 166 | |