Merge from vendor branch NTPD:
[dragonfly.git] / sbin / fsck / pass3.c
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  * @(#)pass3.c  8.2 (Berkeley) 4/27/95
34  * $FreeBSD: src/sbin/fsck/pass3.c,v 1.7.2.1 2001/01/23 23:11:07 iedowse Exp $
35  * $DragonFly: src/sbin/fsck/pass3.c,v 1.5 2004/02/04 17:39:59 joerg Exp $
36  */
37
38 #include <sys/param.h>
39
40 #include <vfs/ufs/dinode.h>
41 #include <vfs/ufs/dir.h>
42 #include <vfs/ufs/fs.h>
43
44 #include <string.h>
45
46 #include "fsck.h"
47
48 void
49 pass3(void)
50 {
51         struct inoinfo *inp;
52         int loopcnt, inpindex, state;
53         ino_t orphan;
54         struct inodesc idesc;
55         char namebuf[MAXNAMLEN+1];
56
57         for (inpindex = inplast - 1; inpindex >= 0; inpindex--) {
58                 if (got_siginfo) {
59                         printf("%s: phase 3: dir %ld of %ld (%d%%)\n", cdevname,
60                             inplast - inpindex - 1, inplast,
61                             (int)((inplast - inpindex - 1) * 100 / inplast));
62                         got_siginfo = 0;
63                 }
64                 inp = inpsort[inpindex];
65                 state = inoinfo(inp->i_number)->ino_state;
66                 if (inp->i_number == ROOTINO ||
67                     (inp->i_parent != 0 && state != DSTATE))
68                         continue;
69                 if (state == DCLEAR)
70                         continue;
71                 /*
72                  * If we are running with soft updates and we come
73                  * across unreferenced directories, we just leave
74                  * them in DSTATE which will cause them to be pitched
75                  * in pass 4.
76                  */
77                 if (preen && resolved && usedsoftdep && state == DSTATE) {
78                         if (inp->i_dotdot >= ROOTINO)
79                                 inoinfo(inp->i_dotdot)->ino_linkcnt++;
80                         continue;
81                 }
82                 for (loopcnt = 0; ; loopcnt++) {
83                         orphan = inp->i_number;
84                         if (inp->i_parent == 0 ||
85                             inoinfo(inp->i_parent)->ino_state != DSTATE ||
86                             loopcnt > countdirs)
87                                 break;
88                         inp = getinoinfo(inp->i_parent);
89                 }
90                 if (loopcnt <= countdirs) {
91                         if (linkup(orphan, inp->i_dotdot, NULL)) {
92                                 inp->i_parent = inp->i_dotdot = lfdir;
93                                 inoinfo(lfdir)->ino_linkcnt--;
94                         }
95                         inoinfo(orphan)->ino_state = DFOUND;
96                         propagate();
97                         continue;
98                 }
99                 pfatal("ORPHANED DIRECTORY LOOP DETECTED I=%lu", orphan);
100                 if (reply("RECONNECT") == 0)
101                         continue;
102                 memset(&idesc, 0, sizeof(struct inodesc));
103                 idesc.id_type = DATA;
104                 idesc.id_number = inp->i_parent;
105                 idesc.id_parent = orphan;
106                 idesc.id_func = findname;
107                 idesc.id_name = namebuf;
108                 if ((ckinode(ginode(inp->i_parent), &idesc) & FOUND) == 0)
109                         pfatal("COULD NOT FIND NAME IN PARENT DIRECTORY");
110                 if (linkup(orphan, inp->i_parent, namebuf)) {
111                         idesc.id_func = clearentry;
112                         if (ckinode(ginode(inp->i_parent), &idesc) & FOUND)
113                                 inoinfo(orphan)->ino_linkcnt++;
114                         inp->i_parent = inp->i_dotdot = lfdir;
115                         inoinfo(lfdir)->ino_linkcnt--;
116                 }
117                 inoinfo(orphan)->ino_state = DFOUND;
118                 propagate();
119         }
120 }