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 #ifdef UFS_GJOURNAL 33 34 #include <sys/param.h> 35 #include <sys/systm.h> 36 #include <sys/kernel.h> 37 #include <sys/vnode.h> 38 #include <sys/lock.h> 39 #include <sys/mount.h> 40 #include <sys/mutex.h> 41 42 #include <ufs/ufs/extattr.h> 43 #include <ufs/ufs/quota.h> 44 #include <ufs/ufs/inode.h> 45 #include <ufs/ufs/ufsmount.h> 46 #include <ufs/ufs/gjournal.h> 47 48 #include <ufs/ffs/fs.h> 49 #include <ufs/ffs/ffs_extern.h> 50 51 /* 52 * Change the number of unreferenced inodes. 53 */ 54 static int 55 ufs_gjournal_modref(struct vnode *vp, int count) 56 { 57 struct cg *cgp; 58 struct buf *bp; 59 ufs2_daddr_t cgbno; 60 int error, cg; 61 struct cdev *dev; 62 struct inode *ip; 63 struct ufsmount *ump; 64 struct fs *fs; 65 struct vnode *devvp; 66 ino_t ino; 67 68 ip = VTOI(vp); 69 ump = ip->i_ump; 70 fs = ip->i_fs; 71 devvp = ip->i_devvp; 72 ino = ip->i_number; 73 74 cg = ino_to_cg(fs, ino); 75 if (devvp->v_type != VCHR) { 76 /* devvp is a snapshot */ 77 dev = VTOI(devvp)->i_devvp->v_rdev; 78 cgbno = fragstoblks(fs, cgtod(fs, cg)); 79 } else { 80 /* devvp is a normal disk device */ 81 dev = devvp->v_rdev; 82 cgbno = fsbtodb(fs, cgtod(fs, cg)); 83 } 84 if ((u_int)ino >= fs->fs_ipg * fs->fs_ncg) 85 panic("ufs_gjournal_modref: range: dev = %s, ino = %lu, fs = %s", 86 devtoname(dev), (u_long)ino, fs->fs_fsmnt); 87 if ((error = bread(devvp, cgbno, (int)fs->fs_cgsize, NOCRED, &bp))) { 88 brelse(bp); 89 return (error); 90 } 91 cgp = (struct cg *)bp->b_data; 92 if (!cg_chkmagic(cgp)) { 93 brelse(bp); 94 return (0); 95 } 96 bp->b_xflags |= BX_BKGRDWRITE; 97 cgp->cg_unrefs += count; 98 UFS_LOCK(ump); 99 fs->fs_unrefs += count; 100 fs->fs_fmod = 1; 101 ACTIVECLEAR(fs, cg); 102 UFS_UNLOCK(ump); 103 bdwrite(bp); 104 return (0); 105 } 106 107 void 108 ufs_gjournal_orphan(struct vnode *vp) 109 { 110 struct inode *ip; 111 112 if (vp->v_mount->mnt_gjprovider == NULL) 113 return; 114 if (vp->v_usecount < 2 || (vp->v_vflag & VV_DELETED)) 115 return; 116 ip = VTOI(vp); 117 if ((vp->v_type == VDIR && ip->i_nlink > 2) || 118 (vp->v_type != VDIR && ip->i_nlink > 1)) { 119 return; 120 } 121 vp->v_vflag |= VV_DELETED; 122 123 ufs_gjournal_modref(vp, 1); 124 } 125 126 void 127 ufs_gjournal_close(struct vnode *vp) 128 { 129 struct inode *ip; 130 131 if (vp->v_mount->mnt_gjprovider == NULL) 132 return; 133 if (!(vp->v_vflag & VV_DELETED)) 134 return; 135 ip = VTOI(vp); 136 if (ip->i_nlink > 0) 137 return; 138 ufs_gjournal_modref(vp, -1); 139 } 140 141 #endif /* UFS_GJOURNAL */ 142