pass3.c revision 74556 
1/*
2 * Copyright (c) 1980, 1986, 1993
3 *	The Regents of the University of California.  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 * 3. All advertising materials mentioning features or use of this software
14 *    must display the following acknowledgement:
15 *	This product includes software developed by the University of
16 *	California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 *    may be used to endorse or promote products derived from this software
19 *    without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 */
33
34#ifndef lint
35#if 0
36static const char sccsid[] = "@(#)pass3.c	8.2 (Berkeley) 4/27/95";
37#endif
38static const char rcsid[] =
39  "$FreeBSD: head/sbin/fsck_ffs/pass3.c 74556 2001-03-21 09:48:03Z mckusick $";
40#endif /* not lint */
41
42#include <sys/param.h>
43
44#include <ufs/ufs/dinode.h>
45#include <ufs/ufs/dir.h>
46#include <ufs/ffs/fs.h>
47
48#include <string.h>
49
50#include "fsck.h"
51
52void
53pass3()
54{
55	struct inoinfo *inp;
56	int loopcnt, inpindex, state;
57	ino_t orphan;
58	struct inodesc idesc;
59	char namebuf[MAXNAMLEN+1];
60
61	for (inpindex = inplast - 1; inpindex >= 0; inpindex--) {
62		if (got_siginfo) {
63			printf("%s: phase 3: dir %d of %d (%d%%)\n", cdevname,
64			    inplast - inpindex - 1, inplast,
65			    (inplast - inpindex - 1) * 100 / inplast);
66			got_siginfo = 0;
67		}
68		inp = inpsort[inpindex];
69		state = inoinfo(inp->i_number)->ino_state;
70		if (inp->i_number == ROOTINO ||
71		    (inp->i_parent != 0 && state != DSTATE))
72			continue;
73		if (state == DCLEAR)
74			continue;
75		/*
76		 * If we are running with soft updates and we come
77		 * across unreferenced directories, we just leave
78		 * them in DSTATE which will cause them to be pitched
79		 * in pass 4.
80		 */
81		if ((preen || bkgrdflag) &&
82		    resolved && usedsoftdep && state == DSTATE) {
83			if (inp->i_dotdot >= ROOTINO)
84				inoinfo(inp->i_dotdot)->ino_linkcnt++;
85			continue;
86		}
87		for (loopcnt = 0; ; loopcnt++) {
88			orphan = inp->i_number;
89			if (inp->i_parent == 0 ||
90			    inoinfo(inp->i_parent)->ino_state != DSTATE ||
91			    loopcnt > countdirs)
92				break;
93			inp = getinoinfo(inp->i_parent);
94		}
95		if (loopcnt <= countdirs) {
96			if (linkup(orphan, inp->i_dotdot, NULL)) {
97				inp->i_parent = inp->i_dotdot = lfdir;
98				inoinfo(lfdir)->ino_linkcnt--;
99			}
100			inoinfo(orphan)->ino_state = DFOUND;
101			propagate();
102			continue;
103		}
104		pfatal("ORPHANED DIRECTORY LOOP DETECTED I=%lu", orphan);
105		if (reply("RECONNECT") == 0)
106			continue;
107		memset(&idesc, 0, sizeof(struct inodesc));
108		idesc.id_type = DATA;
109		idesc.id_number = inp->i_parent;
110		idesc.id_parent = orphan;
111		idesc.id_func = findname;
112		idesc.id_name = namebuf;
113		if ((ckinode(ginode(inp->i_parent), &idesc) & FOUND) == 0)
114			pfatal("COULD NOT FIND NAME IN PARENT DIRECTORY");
115		if (linkup(orphan, inp->i_parent, namebuf)) {
116			idesc.id_func = clearentry;
117			if (ckinode(ginode(inp->i_parent), &idesc) & FOUND)
118				inoinfo(orphan)->ino_linkcnt++;
119			inp->i_parent = inp->i_dotdot = lfdir;
120			inoinfo(lfdir)->ino_linkcnt--;
121		}
122		inoinfo(orphan)->ino_state = DFOUND;
123		propagate();
124	}
125}
126