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 */
53static int
54ufs_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
98void
99ufs_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
117void
118ufs_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