1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (c) 2005-2006 Pawel Jakub Dawidek <pjd@FreeBSD.org>
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28
29 #include <sys/cdefs.h>
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
ufs_gjournal_modref(struct vnode * vp,int count)54 ufs_gjournal_modref(struct vnode *vp, int count)
55 {
56 struct cg *cgp;
57 struct buf *bp;
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 = VFSTOUFS(vp->v_mount);
68 fs = ump->um_fs;
69 devvp = ump->um_devvp;
70 ino = ip->i_number;
71
72 cg = ino_to_cg(fs, ino);
73 if (devvp->v_type == VREG) {
74 /* devvp is a snapshot */
75 dev = VFSTOUFS(devvp->v_mount)->um_devvp->v_rdev;
76 } else if (devvp->v_type == VCHR) {
77 /* devvp is a normal disk device */
78 dev = devvp->v_rdev;
79 } else {
80 bp = NULL;
81 return (EIO);
82 }
83 if ((uint64_t)ino >= fs->fs_ipg * fs->fs_ncg)
84 panic("ufs_gjournal_modref: range: dev = %s, ino = %ju, "
85 "fs = %s", devtoname(dev), (intmax_t)ino, fs->fs_fsmnt);
86 if ((error = ffs_getcg(fs, devvp, cg, 0, &bp, &cgp)) != 0)
87 return (error);
88 cgp->cg_unrefs += count;
89 UFS_LOCK(ump);
90 fs->fs_unrefs += count;
91 fs->fs_fmod = 1;
92 ACTIVECLEAR(fs, cg);
93 UFS_UNLOCK(ump);
94 bdwrite(bp);
95 return (0);
96 }
97
98 void
ufs_gjournal_orphan(struct vnode * vp)99 ufs_gjournal_orphan(struct vnode *vp)
100 {
101 struct inode *ip;
102
103 if (vp->v_mount->mnt_gjprovider == NULL)
104 return;
105 if (vp->v_usecount < 2 || (vp->v_vflag & VV_DELETED))
106 return;
107 ip = VTOI(vp);
108 if ((vp->v_type == VDIR && ip->i_nlink > 2) ||
109 (vp->v_type != VDIR && ip->i_nlink > 1)) {
110 return;
111 }
112 vp->v_vflag |= VV_DELETED;
113
114 ufs_gjournal_modref(vp, 1);
115 }
116
117 void
ufs_gjournal_close(struct vnode * vp)118 ufs_gjournal_close(struct vnode *vp)
119 {
120 struct inode *ip;
121
122 if (vp->v_mount->mnt_gjprovider == NULL)
123 return;
124 if (!(vp->v_vflag & VV_DELETED))
125 return;
126 ip = VTOI(vp);
127 if (ip->i_nlink > 0)
128 return;
129 ufs_gjournal_modref(vp, -1);
130 }
131