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pass3.c

/*
 * Copyright (c) 1980, 1986, 1993
 *    The Regents of the University of California.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 4. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#if 0
#ifndef lint
static const char sccsid[] = "@(#)pass3.c 8.2 (Berkeley) 4/27/95";
#endif /* not lint */
#endif
#include <sys/cdefs.h>
__FBSDID("$FreeBSD: src/sbin/fsck_ffs/pass3.c,v 1.15 2004/10/08 20:44:47 truckman Exp $");

#include <sys/param.h>

#include <ufs/ufs/dinode.h>
#include <ufs/ufs/dir.h>
#include <ufs/ffs/fs.h>

#include <string.h>

#include "fsck.h"

void
pass3(void)
{
      struct inoinfo *inp;
      int loopcnt, inpindex, state;
      ino_t orphan;
      struct inodesc idesc;
      char namebuf[MAXNAMLEN+1];

      for (inpindex = inplast - 1; inpindex >= 0; inpindex--) {
            if (got_siginfo) {
                  printf("%s: phase 3: dir %d of %d (%d%%)\n", cdevname,
                      (int)(inplast - inpindex - 1), (int)inplast,
                      (int)((inplast - inpindex - 1) * 100 / inplast));
                  got_siginfo = 0;
            }
            if (got_sigalarm) {
                  setproctitle("%s p3 %d%%", cdevname,
                      (int)((inplast - inpindex - 1) * 100 / inplast));
                  got_sigalarm = 0;
            }
            inp = inpsort[inpindex];
            state = inoinfo(inp->i_number)->ino_state;
            if (inp->i_number == ROOTINO ||
                (inp->i_parent != 0 && !S_IS_DUNFOUND(state)))
                  continue;
            if (state == DCLEAR)
                  continue;
            /*
             * If we are running with soft updates and we come
             * across unreferenced directories, we just leave
             * them in DSTATE which will cause them to be pitched
             * in pass 4.
             */
            if ((preen || bkgrdflag) &&
                resolved && usedsoftdep && S_IS_DUNFOUND(state)) {
                  if (inp->i_dotdot >= ROOTINO)
                        inoinfo(inp->i_dotdot)->ino_linkcnt++;
                  continue;
            }
            for (loopcnt = 0; ; loopcnt++) {
                  orphan = inp->i_number;
                  if (inp->i_parent == 0 ||
                      !INO_IS_DUNFOUND(inp->i_parent) ||
                      loopcnt > countdirs)
                        break;
                  inp = getinoinfo(inp->i_parent);
            }
            if (loopcnt <= countdirs) {
                  if (linkup(orphan, inp->i_dotdot, NULL)) {
                        inp->i_parent = inp->i_dotdot = lfdir;
                        inoinfo(lfdir)->ino_linkcnt--;
                  }
                  inoinfo(orphan)->ino_state = DFOUND;
                  propagate();
                  continue;
            }
            pfatal("ORPHANED DIRECTORY LOOP DETECTED I=%lu",
                (u_long)orphan);
            if (reply("RECONNECT") == 0)
                  continue;
            memset(&idesc, 0, sizeof(struct inodesc));
            idesc.id_type = DATA;
            idesc.id_number = inp->i_parent;
            idesc.id_parent = orphan;
            idesc.id_func = findname;
            idesc.id_name = namebuf;
            if ((ckinode(ginode(inp->i_parent), &idesc) & FOUND) == 0)
                  pfatal("COULD NOT FIND NAME IN PARENT DIRECTORY");
            if (linkup(orphan, inp->i_parent, namebuf)) {
                  idesc.id_func = clearentry;
                  if (ckinode(ginode(inp->i_parent), &idesc) & FOUND)
                        inoinfo(orphan)->ino_linkcnt++;
                  inp->i_parent = inp->i_dotdot = lfdir;
                  inoinfo(lfdir)->ino_linkcnt--;
            }
            inoinfo(orphan)->ino_state = DFOUND;
            propagate();
      }
}

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