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/kernel.h>
35 #include <sys/vnode.h>
36 #include <sys/lock.h>
37 #include <sys/mount.h>
38 #include <sys/mutex.h>
39
40 #include <ufs/ufs/extattr.h>
41 #include <ufs/ufs/quota.h>
42 #include <ufs/ufs/inode.h>
43 #include <ufs/ufs/ufsmount.h>
44 #include <ufs/ufs/gjournal.h>
45
46 #include <ufs/ffs/fs.h>
47 #include <ufs/ffs/ffs_extern.h>
48
49 /*
50 * Change the number of unreferenced inodes.
51 */
52 static int
53 ufs_gjournal_modref(struct vnode *vp, int count)
54 {
55 struct cg *cgp;
56 struct buf *bp;
57 ufs2_daddr_t cgbno;
58 int error, cg;
59 struct cdev *dev;
60 struct inode *ip;
61 struct ufsmount *ump;
62 struct fs *fs;
63 struct vnode *devvp;
64 ino_t ino;
65
66 ip = VTOI(vp);
67 ump = ip->i_ump;
68 fs = ip->i_fs;
69 devvp = ip->i_devvp;
70 ino = ip->i_number;
71
72 cg = ino_to_cg(fs, ino);
73 if (devvp->v_type != VCHR) {
74 /* devvp is a snapshot */
75 dev = VTOI(devvp)->i_devvp->v_rdev;
76 cgbno = fragstoblks(fs, cgtod(fs, cg));
77 } else {
78 /* devvp is a normal disk device */
79 dev = devvp->v_rdev;
80 cgbno = fsbtodb(fs, cgtod(fs, cg));
81 }
82 if ((u_int)ino >= fs->fs_ipg * fs->fs_ncg)
83 panic("ufs_gjournal_modref: range: dev = %s, ino = %lu, fs = %s",
84 devtoname(dev), (u_long)ino, fs->fs_fsmnt);
85 if ((error = bread(devvp, cgbno, (int)fs->fs_cgsize, NOCRED, &bp))) {
86 brelse(bp);
87 return (error);
88 }
89 cgp = (struct cg *)bp->b_data;
90 if (!cg_chkmagic(cgp)) {
91 brelse(bp);
92 return (0);
93 }
94 bp->b_xflags |= BX_BKGRDWRITE;
95 cgp->cg_unrefs += count;
96 UFS_LOCK(ump);
97 fs->fs_unrefs += count;
98 fs->fs_fmod = 1;
99 ACTIVECLEAR(fs, cg);
100 UFS_UNLOCK(ump);
101 bdwrite(bp);
102 return (0);
103 }
104
105 void
106 ufs_gjournal_orphan(struct vnode *vp)
107 {
108 struct inode *ip;
109
110 if (vp->v_mount->mnt_gjprovider == NULL)
111 return;
112 if (vp->v_usecount < 2 || (vp->v_vflag & VV_DELETED))
113 return;
114 ip = VTOI(vp);
115 if ((vp->v_type == VDIR && ip->i_nlink > 2) ||
116 (vp->v_type != VDIR && ip->i_nlink > 1)) {
117 return;
118 }
119 vp->v_vflag |= VV_DELETED;
120
121 ufs_gjournal_modref(vp, 1);
122 }
123
124 void
125 ufs_gjournal_close(struct vnode *vp)
126 {
127 struct inode *ip;
128
129 if (vp->v_mount->mnt_gjprovider == NULL)
130 return;
131 if (!(vp->v_vflag & VV_DELETED))
132 return;
133 ip = VTOI(vp);
134 if (ip->i_nlink > 0)
135 return;
136 ufs_gjournal_modref(vp, -1);
137 }
Cache object: b9b104c2575ee5299b6a6560e8667113
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