/*      $NetBSD: pass3.c,v 1.21 2013/01/22 09:39:12 dholland Exp $      */

/*
 * 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.
 * 3. 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.
 */

#include <sys/cdefs.h>
#ifndef lint
#if 0
static char sccsid[] = "@(#)pass3.c     8.2 (Berkeley) 4/27/95";
#else
__RCSID("$NetBSD: pass3.c,v 1.21 2013/01/22 09:39:12 dholland Exp $");
#endif
#endif /* not lint */

#include <sys/param.h>
#include <sys/time.h>
#include <string.h>

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

#include <dirent.h>

#include "fsck.h"
#include "extern.h"
#include "fsutil.h"

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

        for (inpp = &inpsort[inplast - 1]; inpp >= inpsort; inpp--) {
                int inpindex = inpp - inpsort;
                if (got_siginfo) {
                        fprintf(stderr,
                            "%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;
                }
#ifdef PROGRESS
                progress_bar(cdevname(), preen ? NULL : "phase 3",
                            inplast - inpindex - 1, inplast);
#endif /* PROGRESS */
                inp = *inpp;
                state = inoinfo(inp->i_number)->ino_state;
                if (inp->i_number == UFS_ROOTINO ||
                    (inp->i_parent != 0 && state != DSTATE))
                        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 &&
                    resolved && usedsoftdep && state == DSTATE) {
                        if (inp->i_dotdot >= UFS_ROOTINO)
                                inoinfo(inp->i_dotdot)->ino_linkcnt++;
                        continue;
                }
                for (loopcnt = 0; ; loopcnt++) {
                        orphan = inp->i_number;
                        if (inp->i_parent == 0 ||
                            inoinfo(inp->i_parent)->ino_state != DSTATE ||
                            loopcnt > countdirs)
                                break;
                        inp = getinoinfo(inp->i_parent);
                }
                if (loopcnt <= countdirs) {
                        if (linkup(orphan, inp->i_dotdot, NULL))
                                inoinfo(lfdir)->ino_linkcnt--;
                        continue;
                }
                pfatal("ORPHANED DIRECTORY LOOP DETECTED I=%lu",
                    (u_long)orphan);
                if (reply("RECONNECT") == 0)
                        continue;
                dp = ginode(inp->i_parent);
                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;
                idesc.id_uid = iswap32(DIP(dp, uid));
                idesc.id_gid = iswap32(DIP(dp, gid));
                if ((ckinode(dp, &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++;
                        inoinfo(lfdir)->ino_linkcnt--;
                }
        }
#ifdef PROGRESS
        if (!preen)
                progress_done();
#endif /* PROGRESS */
}