1 /*- 2 * Copyright (c) 2005-2006 Pawel Jakub Dawidek <pjd@FreeBSD.org> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27 #include <sys/cdefs.h> 28 __FBSDID("$FreeBSD$"); 29 30 #include "opt_ufs.h" 31 32 #include <sys/param.h> 33 #include <sys/systm.h> 34 #include <sys/buf.h> 35 #include <sys/kernel.h> 36 #include <sys/vnode.h> 37 #include <sys/lock.h> 38 #include <sys/mount.h> 39 #include <sys/mutex.h> 40 41 #include <ufs/ufs/extattr.h> 42 #include <ufs/ufs/quota.h> 43 #include <ufs/ufs/inode.h> 44 #include <ufs/ufs/ufsmount.h> 45 #include <ufs/ufs/gjournal.h> 46 47 #include <ufs/ffs/fs.h> 48 #include <ufs/ffs/ffs_extern.h> 49 50 /* 51 * Change the number of unreferenced inodes. 52 */ 53 static int 54 ufs_gjournal_modref(struct vnode *vp, int count) 55 { 56 struct cg *cgp; 57 struct buf *bp; 58 ufs2_daddr_t cgbno; 59 int error, cg; 60 struct cdev *dev; 61 struct inode *ip; 62 struct ufsmount *ump; 63 struct fs *fs; 64 struct vnode *devvp; 65 ino_t ino; 66 67 ip = VTOI(vp); 68 ump = VFSTOUFS(vp->v_mount); 69 fs = ump->um_fs; 70 devvp = ump->um_devvp; 71 ino = ip->i_number; 72 73 cg = ino_to_cg(fs, ino); 74 if (devvp->v_type == VREG) { 75 /* devvp is a snapshot */ 76 dev = VFSTOUFS(devvp->v_mount)->um_devvp->v_rdev; 77 cgbno = fragstoblks(fs, cgtod(fs, cg)); 78 } else if (devvp->v_type == VCHR) { 79 /* devvp is a normal disk device */ 80 dev = devvp->v_rdev; 81 cgbno = fsbtodb(fs, cgtod(fs, cg)); 82 } else { 83 bp = NULL; 84 return (EIO); 85 } 86 if ((u_int)ino >= fs->fs_ipg * fs->fs_ncg) 87 panic("ufs_gjournal_modref: range: dev = %s, ino = %lu, fs = %s", 88 devtoname(dev), (u_long)ino, fs->fs_fsmnt); 89 if ((error = bread(devvp, cgbno, (int)fs->fs_cgsize, NOCRED, &bp))) { 90 brelse(bp); 91 return (error); 92 } 93 cgp = (struct cg *)bp->b_data; 94 if (!cg_chkmagic(cgp)) { 95 brelse(bp); 96 return (0); 97 } 98 bp->b_xflags |= BX_BKGRDWRITE; 99 cgp->cg_unrefs += count; 100 UFS_LOCK(ump); 101 fs->fs_unrefs += count; 102 fs->fs_fmod = 1; 103 ACTIVECLEAR(fs, cg); 104 UFS_UNLOCK(ump); 105 bdwrite(bp); 106 return (0); 107 } 108 109 void 110 ufs_gjournal_orphan(struct vnode *vp) 111 { 112 struct inode *ip; 113 114 if (vp->v_mount->mnt_gjprovider == NULL) 115 return; 116 if (vp->v_usecount < 2 || (vp->v_vflag & VV_DELETED)) 117 return; 118 ip = VTOI(vp); 119 if ((vp->v_type == VDIR && ip->i_nlink > 2) || 120 (vp->v_type != VDIR && ip->i_nlink > 1)) { 121 return; 122 } 123 vp->v_vflag |= VV_DELETED; 124 125 ufs_gjournal_modref(vp, 1); 126 } 127 128 void 129 ufs_gjournal_close(struct vnode *vp) 130 { 131 struct inode *ip; 132 133 if (vp->v_mount->mnt_gjprovider == NULL) 134 return; 135 if (!(vp->v_vflag & VV_DELETED)) 136 return; 137 ip = VTOI(vp); 138 if (ip->i_nlink > 0) 139 return; 140 ufs_gjournal_modref(vp, -1); 141 } 142