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 = ip->i_ump; 69 fs = ip->i_fs; 70 devvp = ip->i_devvp; 71 ino = ip->i_number; 72 73 cg = ino_to_cg(fs, ino); 74 if (devvp->v_type != VCHR) { 75 /* devvp is a snapshot */ 76 dev = VTOI(devvp)->i_devvp->v_rdev; 77 cgbno = fragstoblks(fs, cgtod(fs, cg)); 78 } else { 79 /* devvp is a normal disk device */ 80 dev = devvp->v_rdev; 81 cgbno = fsbtodb(fs, cgtod(fs, cg)); 82 } 83 if ((u_int)ino >= fs->fs_ipg * fs->fs_ncg) 84 panic("ufs_gjournal_modref: range: dev = %s, ino = %lu, fs = %s", 85 devtoname(dev), (u_long)ino, fs->fs_fsmnt); 86 if ((error = bread(devvp, cgbno, (int)fs->fs_cgsize, NOCRED, &bp))) { 87 brelse(bp); 88 return (error); 89 } 90 cgp = (struct cg *)bp->b_data; 91 if (!cg_chkmagic(cgp)) { 92 brelse(bp); 93 return (0); 94 } 95 bp->b_xflags |= BX_BKGRDWRITE; 96 cgp->cg_unrefs += count; 97 UFS_LOCK(ump); 98 fs->fs_unrefs += count; 99 fs->fs_fmod = 1; 100 ACTIVECLEAR(fs, cg); 101 UFS_UNLOCK(ump); 102 bdwrite(bp); 103 return (0); 104 } 105 106 void 107 ufs_gjournal_orphan(struct vnode *vp) 108 { 109 struct inode *ip; 110 111 if (vp->v_mount->mnt_gjprovider == NULL) 112 return; 113 if (vp->v_usecount < 2 || (vp->v_vflag & VV_DELETED)) 114 return; 115 ip = VTOI(vp); 116 if ((vp->v_type == VDIR && ip->i_nlink > 2) || 117 (vp->v_type != VDIR && ip->i_nlink > 1)) { 118 return; 119 } 120 vp->v_vflag |= VV_DELETED; 121 122 ufs_gjournal_modref(vp, 1); 123 } 124 125 void 126 ufs_gjournal_close(struct vnode *vp) 127 { 128 struct inode *ip; 129 130 if (vp->v_mount->mnt_gjprovider == NULL) 131 return; 132 if (!(vp->v_vflag & VV_DELETED)) 133 return; 134 ip = VTOI(vp); 135 if (ip->i_nlink > 0) 136 return; 137 ufs_gjournal_modref(vp, -1); 138 } 139