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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
36 static const char sccsid[] = "@(#)pass3.c       8.2 (Berkeley) 4/27/95";
37 #endif
38 static const char rcsid[] =
39   "$FreeBSD$";
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
52 void
53 pass3()
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                 inp = inpsort[inpindex];
63                 state = inoinfo(inp->i_number)->ino_state;
64                 if (inp->i_number == ROOTINO ||
65                     (inp->i_parent != 0 && state != DSTATE))
66                         continue;
67                 if (state == DCLEAR)
68                         continue;
69                 /*
70                  * If we are running with soft updates and we come
71                  * across unreferenced directories, we just leave
72                  * them in DSTATE which will cause them to be pitched
73                  * in pass 4.
74                  */
75                 if (preen && resolved && usedsoftdep && state == DSTATE) {
76                         if (inp->i_dotdot >= ROOTINO)
77                                 inoinfo(inp->i_dotdot)->ino_linkcnt++;
78                         continue;
79                 }
80                 for (loopcnt = 0; ; loopcnt++) {
81                         orphan = inp->i_number;
82                         if (inp->i_parent == 0 ||
83                             inoinfo(inp->i_parent)->ino_state != DSTATE ||
84                             loopcnt > countdirs)
85                                 break;
86                         inp = getinoinfo(inp->i_parent);
87                 }
88                 if (loopcnt <= countdirs) {
89                         if (linkup(orphan, inp->i_dotdot, NULL)) {
90                                 inp->i_parent = inp->i_dotdot = lfdir;
91                                 inoinfo(lfdir)->ino_linkcnt--;
92                         }
93                         inoinfo(orphan)->ino_state = DFOUND;
94                         propagate();
95                         continue;
96                 }
97                 pfatal("ORPHANED DIRECTORY LOOP DETECTED I=%lu", orphan);
98                 if (reply("RECONNECT") == 0)
99                         continue;
100                 memset(&idesc, 0, sizeof(struct inodesc));
101                 idesc.id_type = DATA;
102                 idesc.id_number = inp->i_parent;
103                 idesc.id_parent = orphan;
104                 idesc.id_func = findname;
105                 idesc.id_name = namebuf;
106                 if ((ckinode(ginode(inp->i_parent), &idesc) & FOUND) == 0)
107                         pfatal("COULD NOT FIND NAME IN PARENT DIRECTORY");
108                 if (linkup(orphan, inp->i_parent, namebuf)) {
109                         idesc.id_func = clearentry;
110                         if (ckinode(ginode(inp->i_parent), &idesc) & FOUND)
111                                 inoinfo(orphan)->ino_linkcnt++;
112                         inp->i_parent = inp->i_dotdot = lfdir;
113                         inoinfo(lfdir)->ino_linkcnt--;
114                 }
115                 inoinfo(orphan)->ino_state = DFOUND;
116                 propagate();
117         }
118 }