1/*-
2 * SPDX-License-Identifier: BSD-3-Clause
3 *
4 * Copyright (c) 1980, 1986, 1993
5 *	The Regents of the University of California.  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 * 3. Neither the name of the University nor the names of its contributors
16 *    may be used to endorse or promote products derived from this software
17 *    without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 */
31
32#if 0
33#ifndef lint
34static const char sccsid[] = "@(#)pass3.c	8.2 (Berkeley) 4/27/95";
35#endif /* not lint */
36#endif
37#include <sys/cdefs.h>
38__FBSDID("$FreeBSD$");
39
40#include <sys/param.h>
41
42#include <ufs/ufs/dinode.h>
43#include <ufs/ufs/dir.h>
44#include <ufs/ffs/fs.h>
45
46#include <string.h>
47
48#include "fsck.h"
49
50void
51pass3(void)
52{
53	struct inoinfo *inp;
54	int loopcnt, inpindex, state;
55	ino_t orphan;
56	struct inode ip;
57	struct inodesc idesc;
58	char namebuf[UFS_MAXNAMLEN+1];
59
60	for (inpindex = inplast - 1; inpindex >= 0; inpindex--) {
61		if (got_siginfo) {
62			printf("%s: phase 3: dir %d of %d (%d%%)\n", cdevname,
63			    (int)(inplast - inpindex - 1), (int)inplast,
64			    (int)((inplast - inpindex - 1) * 100 / inplast));
65			got_siginfo = 0;
66		}
67		if (got_sigalarm) {
68			setproctitle("%s p3 %d%%", cdevname,
69			    (int)((inplast - inpindex - 1) * 100 / inplast));
70			got_sigalarm = 0;
71		}
72		inp = inpsort[inpindex];
73		state = inoinfo(inp->i_number)->ino_state;
74		if (inp->i_number == UFS_ROOTINO ||
75		    (inp->i_parent != 0 && !S_IS_DUNFOUND(state)))
76			continue;
77		if (state == DCLEAR)
78			continue;
79		/*
80		 * If we are running with soft updates and we come
81		 * across unreferenced directories, we just leave
82		 * them in DSTATE which will cause them to be pitched
83		 * in pass 4.
84		 */
85		if ((preen || bkgrdflag) &&
86		    resolved && usedsoftdep && S_IS_DUNFOUND(state)) {
87			if (inp->i_dotdot >= UFS_ROOTINO)
88				inoinfo(inp->i_dotdot)->ino_linkcnt++;
89			continue;
90		}
91		for (loopcnt = 0; ; loopcnt++) {
92			orphan = inp->i_number;
93			if (inp->i_parent == 0 ||
94			    !INO_IS_DUNFOUND(inp->i_parent) ||
95			    loopcnt > countdirs)
96				break;
97			inp = getinoinfo(inp->i_parent);
98		}
99		if (loopcnt <= countdirs) {
100			if (linkup(orphan, inp->i_dotdot, NULL)) {
101				inp->i_parent = inp->i_dotdot = lfdir;
102				inoinfo(lfdir)->ino_linkcnt--;
103			}
104			inoinfo(orphan)->ino_state = DFOUND;
105			propagate();
106			continue;
107		}
108		pfatal("ORPHANED DIRECTORY LOOP DETECTED I=%lu",
109		    (u_long)orphan);
110		if (reply("RECONNECT") == 0)
111			continue;
112		memset(&idesc, 0, sizeof(struct inodesc));
113		idesc.id_type = DATA;
114		idesc.id_number = inp->i_parent;
115		idesc.id_parent = orphan;
116		idesc.id_func = findname;
117		idesc.id_name = namebuf;
118		ginode(inp->i_parent, &ip);
119		if ((ckinode(ip.i_dp, &idesc) & FOUND) == 0)
120			pfatal("COULD NOT FIND NAME IN PARENT DIRECTORY");
121		if (linkup(orphan, inp->i_parent, namebuf)) {
122			idesc.id_func = clearentry;
123			if (ckinode(ip.i_dp, &idesc) & FOUND)
124				inoinfo(orphan)->ino_linkcnt++;
125			inp->i_parent = inp->i_dotdot = lfdir;
126			inoinfo(lfdir)->ino_linkcnt--;
127		}
128		irelse(&ip);
129		inoinfo(orphan)->ino_state = DFOUND;
130		propagate();
131	}
132}
133