sbin/fsck_ext2fs/pass1b.c

   1 /*      $NetBSD: pass1b.c,v 1.7 2009/04/06 12:50:37 lukem 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 /*
  33  * Copyright (c) 1997 Manuel Bouyer.
  34  *
  35  * Redistribution and use in source and binary forms, with or without
  36  * modification, are permitted provided that the following conditions
  37  * are met:
  38  * 1. Redistributions of source code must retain the above copyright
  39  *    notice, this list of conditions and the following disclaimer.
  40  * 2. Redistributions in binary form must reproduce the above copyright
  41  *    notice, this list of conditions and the following disclaimer in the
  42  *    documentation and/or other materials provided with the distribution.
  43  *
  44  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  45  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  46  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  47  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  48  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  49  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  50  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  51  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  52  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  53  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  54  */
  55
  56 #include <sys/cdefs.h>
  57 #ifndef lint
  58 #if 0
  59 static char sccsid[] = "@(#)pass1b.c    8.1 (Berkeley) 6/5/93";
  60 #else
  61 __RCSID("$NetBSD: pass1b.c,v 1.7 2009/04/06 12:50:37 lukem Exp $");
  62 #endif
  63 #endif /* not lint */
  64
  65 #include <sys/param.h>
  66 #include <sys/time.h>
  67 #include <ufs/ext2fs/ext2fs_dinode.h>
  68 #include <ufs/ext2fs/ext2fs.h>
  69
  70 #include <string.h>
  71 #include "fsck.h"
  72 #include "extern.h"
  73
  74 static int      pass1bcheck(struct inodesc *);
  75 static struct   dups *duphead;
  76
  77 void
  78 pass1b(void)
  79 {
  80         int c;
  81         uint32_t i;
  82         struct ext2fs_dinode *dp;
  83         struct inodesc idesc;
  84         ino_t inumber;
  85
  86         memset(&idesc, 0, sizeof(struct inodesc));
  87         idesc.id_type = ADDR;
  88         idesc.id_func = pass1bcheck;
  89         duphead = duplist;
  90         inumber = 0;
  91         for (c = 0; c < sblock.e2fs_ncg; c++) {
  92                 for (i = 0; i < sblock.e2fs.e2fs_ipg; i++, inumber++) {
  93                         if ((inumber < EXT2_FIRSTINO) && (inumber != EXT2_ROOTINO))
  94                                 continue;
  95                         dp = ginode(inumber);
  96                         if (dp == NULL)
  97                                 continue;
  98                         idesc.id_number = inumber;
  99                         if (statemap[inumber] != USTATE &&
 100                             (ckinode(dp, &idesc) & STOP))
 101                                 return;
 102                 }
 103         }
 104 }
 105
 106 static int
 107 pass1bcheck(struct inodesc *idesc)
 108 {
 109         struct dups *dlp;
 110         int nfrags, res = KEEPON;
 111         daddr_t blkno = idesc->id_blkno;
 112
 113         for (nfrags = idesc->id_numfrags; nfrags > 0; blkno++, nfrags--) {
 114                 if (chkrange(blkno, 1))
 115                         res = SKIP;
 116                 for (dlp = duphead; dlp; dlp = dlp->next) {
 117                         if (dlp->dup == blkno) {
 118                                 blkerror(idesc->id_number, "DUP", blkno);
 119                                 dlp->dup = duphead->dup;
 120                                 duphead->dup = blkno;
 121                                 duphead = duphead->next;
 122                         }
 123                         if (dlp == muldup)
 124                                 break;
 125                 }
 126                 if (muldup == 0 || duphead == muldup->next)
 127                         return (STOP);
 128         }
 129         return (res);
 130 }