sbin/fsck_ffs/pass3.c

   1 /*      $NetBSD: pass3.c,v 1.18 2005/01/13 19:56:02 christos Exp $      */
   2
   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 #include <sys/cdefs.h>
  33 #ifndef lint
  34 #if 0
  35 static char sccsid[] = "@(#)pass3.c     8.2 (Berkeley) 4/27/95";
  36 #else
  37 __RCSID("$NetBSD: pass3.c,v 1.18 2005/01/13 19:56:02 christos Exp $");
  38 #endif
  39 #endif /* not lint */
  40
  41 #include <sys/param.h>
  42 #include <sys/time.h>
  43 #include <string.h>
  44
  45 #include <ufs/ufs/dinode.h>
  46 #include <ufs/ffs/fs.h>
  47
  48 #include <dirent.h>
  49
  50 #include "fsck.h"
  51 #include "extern.h"
  52 #include "fsutil.h"
  53
  54 void
  55 pass3(void)
  56 {
  57         struct inoinfo *inp, **inpp;
  58         int loopcnt, state;
  59         ino_t orphan;
  60         struct inodesc idesc;
  61         char namebuf[MAXNAMLEN+1];
  62
  63         for (inpp = &inpsort[inplast - 1]; inpp >= inpsort; inpp--) {
  64                 int inpindex = inpp - inpsort;
  65                 if (got_siginfo) {
  66                         fprintf(stderr,
  67                             "%s: phase 3: dir %d of %d (%d%%)\n", cdevname(),
  68                             (int)(inplast - inpindex - 1), (int)inplast,
  69                             (int)((inplast - inpindex - 1) * 100 / inplast));
  70                         got_siginfo = 0;
  71                 }
  72 #ifdef PROGRESS
  73                 progress_bar(cdevname(), preen ? NULL : "phase 3",
  74                             inplast - inpindex - 1, inplast);
  75 #endif /* PROGRESS */
  76                 inp = *inpp;
  77                 state = inoinfo(inp->i_number)->ino_state;
  78                 if (inp->i_number == ROOTINO ||
  79                     (inp->i_parent != 0 && state != DSTATE))
  80                         continue;
  81                 if (state == DCLEAR)
  82                         continue;
  83                 /*
  84                  * If we are running with soft updates and we come
  85                  * across unreferenced directories, we just leave
  86                  * them in DSTATE which will cause them to be pitched
  87                  * in pass 4.
  88                  */
  89                 if (preen &&
  90                     resolved && usedsoftdep && state == DSTATE) {
  91                         if (inp->i_dotdot >= ROOTINO)
  92                                 inoinfo(inp->i_dotdot)->ino_linkcnt++;
  93                         continue;
  94                 }
  95                 for (loopcnt = 0; ; loopcnt++) {
  96                         orphan = inp->i_number;
  97                         if (inp->i_parent == 0 ||
  98                             inoinfo(inp->i_parent)->ino_state != DSTATE ||
  99                             loopcnt > countdirs)
 100                                 break;
 101                         inp = getinoinfo(inp->i_parent);
 102                 }
 103                 if (loopcnt <= countdirs) {
 104                         if (linkup(orphan, inp->i_dotdot, NULL))
 105                                 inoinfo(lfdir)->ino_linkcnt--;
 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                 if ((ckinode(ginode(inp->i_parent), &idesc) & FOUND) == 0)
 119                         pfatal("COULD NOT FIND NAME IN PARENT DIRECTORY");
 120                 if (linkup(orphan, inp->i_parent, namebuf)) {
 121                         idesc.id_func = clearentry;
 122                         if (ckinode(ginode(inp->i_parent), &idesc) & FOUND)
 123                                 inoinfo(orphan)->ino_linkcnt++;
 124                         inoinfo(lfdir)->ino_linkcnt--;
 125                 }
 126         }
 127 #ifdef PROGRESS
 128         if (!preen)
 129                 progress_done();
 130 #endif /* PROGRESS */
 131 }