sbin/fsck_ffs/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
  30 #if 0
  31 #ifndef lint
  32 static const char sccsid[] = "@(#)pass3.c       8.2 (Berkeley) 4/27/95";
  33 #endif /* not lint */
  34 #endif
  35 #include <sys/cdefs.h>
  36 __FBSDID("$FreeBSD$");
  37
  38 #include <sys/param.h>
  39
  40 #include <ufs/ufs/dinode.h>
  41 #include <ufs/ufs/dir.h>
  42 #include <ufs/ffs/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 %d of %d (%d%%)\n", cdevname,
  60                             (int)(inplast - inpindex - 1), (int)inplast,
  61                             (int)((inplast - inpindex - 1) * 100 / inplast));
  62                         got_siginfo = 0;
  63                 }
  64                 if (got_sigalarm) {
  65                         setproctitle("%s p3 %d%%", cdevname,
  66                             (int)((inplast - inpindex - 1) * 100 / inplast));
  67                         got_sigalarm = 0;
  68                 }
  69                 inp = inpsort[inpindex];
  70                 state = inoinfo(inp->i_number)->ino_state;
  71                 if (inp->i_number == ROOTINO ||
  72                     (inp->i_parent != 0 && !S_IS_DUNFOUND(state)))
  73                         continue;
  74                 if (state == DCLEAR)
  75                         continue;
  76                 /*
  77                  * If we are running with soft updates and we come
  78                  * across unreferenced directories, we just leave
  79                  * them in DSTATE which will cause them to be pitched
  80                  * in pass 4.
  81                  */
  82                 if ((preen || bkgrdflag) &&
  83                     resolved && usedsoftdep && S_IS_DUNFOUND(state)) {
  84                         if (inp->i_dotdot >= ROOTINO)
  85                                 inoinfo(inp->i_dotdot)->ino_linkcnt++;
  86                         continue;
  87                 }
  88                 for (loopcnt = 0; ; loopcnt++) {
  89                         orphan = inp->i_number;
  90                         if (inp->i_parent == 0 ||
  91                             !INO_IS_DUNFOUND(inp->i_parent) ||
  92                             loopcnt > countdirs)
  93                                 break;
  94                         inp = getinoinfo(inp->i_parent);
  95                 }
  96                 if (loopcnt <= countdirs) {
  97                         if (linkup(orphan, inp->i_dotdot, NULL)) {
  98                                 inp->i_parent = inp->i_dotdot = lfdir;
  99                                 inoinfo(lfdir)->ino_linkcnt--;
 100                         }
 101                         inoinfo(orphan)->ino_state = DFOUND;
 102                         propagate();
 103                         continue;
 104                 }
 105                 pfatal("ORPHANED DIRECTORY LOOP DETECTED I=%lu",
 106                     (u_long)orphan);
 107                 if (reply("RECONNECT") == 0)
 108                         continue;
 109                 memset(&idesc, 0, sizeof(struct inodesc));
 110                 idesc.id_type = DATA;
 111                 idesc.id_number = inp->i_parent;
 112                 idesc.id_parent = orphan;
 113                 idesc.id_func = findname;
 114                 idesc.id_name = namebuf;
 115                 if ((ckinode(ginode(inp->i_parent), &idesc) & FOUND) == 0)
 116                         pfatal("COULD NOT FIND NAME IN PARENT DIRECTORY");
 117                 if (linkup(orphan, inp->i_parent, namebuf)) {
 118                         idesc.id_func = clearentry;
 119                         if (ckinode(ginode(inp->i_parent), &idesc) & FOUND)
 120                                 inoinfo(orphan)->ino_linkcnt++;
 121                         inp->i_parent = inp->i_dotdot = lfdir;
 122                         inoinfo(lfdir)->ino_linkcnt--;
 123                 }
 124                 inoinfo(orphan)->ino_state = DFOUND;
 125                 propagate();
 126         }
 127 }