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  * 4. Neither the name of the University nor the names of its contributors
  14  *    may be used to endorse or promote products derived from this software
  15  *    without specific prior written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  27  * SUCH DAMAGE.
  28  *
  29  * @(#)pass3.c  8.2 (Berkeley) 4/27/95
  30  * $FreeBSD: src/sbin/fsck/pass3.c,v 1.7.2.1 2001/01/23 23:11:07 iedowse Exp $
  31  * $DragonFly: src/sbin/fsck/pass3.c,v 1.6 2006/10/12 04:04:03 dillon Exp $
  32  */
  33
  34 #include <sys/param.h>
  35
  36 #include <vfs/ufs/dinode.h>
  37 #include <vfs/ufs/dir.h>
  38 #include <vfs/ufs/fs.h>
  39
  40 #include <string.h>
  41
  42 #include "fsck.h"
  43
  44 void
  45 pass3(void)
  46 {
  47         struct inoinfo *inp;
  48         int loopcnt, inpindex, state;
  49         ufs1_ino_t orphan;
  50         struct inodesc idesc;
  51         char namebuf[MAXNAMLEN+1];
  52
  53         for (inpindex = inplast - 1; inpindex >= 0; inpindex--) {
  54                 if (got_siginfo) {
  55                         printf("%s: phase 3: dir %ld of %ld (%d%%)\n", cdevname,
  56                             inplast - inpindex - 1, inplast,
  57                             (int)((inplast - inpindex - 1) * 100 / inplast));
  58                         got_siginfo = 0;
  59                 }
  60                 inp = inpsort[inpindex];
  61                 state = inoinfo(inp->i_number)->ino_state;
  62                 if (inp->i_number == ROOTINO ||
  63                     (inp->i_parent != 0 && state != DSTATE))
  64                         continue;
  65                 if (state == DCLEAR)
  66                         continue;
  67                 /*
  68                  * If we are running with soft updates and we come
  69                  * across unreferenced directories, we just leave
  70                  * them in DSTATE which will cause them to be pitched
  71                  * in pass 4.
  72                  */
  73                 if (preen && resolved && usedsoftdep && state == DSTATE) {
  74                         if (inp->i_dotdot >= ROOTINO)
  75                                 inoinfo(inp->i_dotdot)->ino_linkcnt++;
  76                         continue;
  77                 }
  78                 for (loopcnt = 0; ; loopcnt++) {
  79                         orphan = inp->i_number;
  80                         if (inp->i_parent == 0 ||
  81                             inoinfo(inp->i_parent)->ino_state != DSTATE ||
  82                             loopcnt > countdirs)
  83                                 break;
  84                         inp = getinoinfo(inp->i_parent);
  85                 }
  86                 if (loopcnt <= countdirs) {
  87                         if (linkup(orphan, inp->i_dotdot, NULL)) {
  88                                 inp->i_parent = inp->i_dotdot = lfdir;
  89                                 inoinfo(lfdir)->ino_linkcnt--;
  90                         }
  91                         inoinfo(orphan)->ino_state = DFOUND;
  92                         propagate();
  93                         continue;
  94                 }
  95                 pfatal("ORPHANED DIRECTORY LOOP DETECTED I=%lu", orphan);
  96                 if (reply("RECONNECT") == 0)
  97                         continue;
  98                 memset(&idesc, 0, sizeof(struct inodesc));
  99                 idesc.id_type = DATA;
 100                 idesc.id_number = inp->i_parent;
 101                 idesc.id_parent = orphan;
 102                 idesc.id_func = findname;
 103                 idesc.id_name = namebuf;
 104                 if ((ckinode(ginode(inp->i_parent), &idesc) & FOUND) == 0)
 105                         pfatal("COULD NOT FIND NAME IN PARENT DIRECTORY");
 106                 if (linkup(orphan, inp->i_parent, namebuf)) {
 107                         idesc.id_func = clearentry;
 108                         if (ckinode(ginode(inp->i_parent), &idesc) & FOUND)
 109                                 inoinfo(orphan)->ino_linkcnt++;
 110                         inp->i_parent = inp->i_dotdot = lfdir;
 111                         inoinfo(lfdir)->ino_linkcnt--;
 112                 }
 113                 inoinfo(orphan)->ino_state = DFOUND;
 114                 propagate();
 115         }
 116 }