NetBSD/sbin/fsck_msdos/check.c

202 lines
4.9 KiB
C
Raw Normal View History

/* $NetBSD: check.c,v 1.8 1997/10/17 11:19:29 ws Exp $ */
1996-05-14 21:39:21 +04:00
/*
* Copyright (C) 1995, 1996, 1997 Wolfgang Solfrank
1996-05-14 21:39:21 +04:00
* Copyright (c) 1995 Martin Husemann
*
* 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. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Martin Husemann
* and Wolfgang Solfrank.
* 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 AUTHORS ``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 AUTHORS 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>
1996-05-14 21:39:21 +04:00
#ifndef lint
__RCSID("$NetBSD: check.c,v 1.8 1997/10/17 11:19:29 ws Exp $");
1996-05-14 21:39:21 +04:00
#endif /* not lint */
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <stdio.h>
#include <unistd.h>
#include <fcntl.h>
#include "ext.h"
1996-09-28 03:22:50 +04:00
#include "fsutil.h"
1996-05-14 21:39:21 +04:00
int
checkfilesys(fname)
const char *fname;
{
int dosfs;
struct bootblock boot;
struct fatEntry *fat = NULL;
1996-05-14 21:39:21 +04:00
int i;
int mod = 0;
rdonly = alwaysno;
if (!preen)
printf("** %s", fname);
dosfs = open(fname, rdonly ? O_RDONLY : O_RDWR, 0);
if (dosfs < 0 && !rdonly) {
dosfs = open(fname, O_RDONLY, 0);
if (dosfs >= 0)
pwarn(" (NO WRITE)\n");
else if (!preen)
printf("\n");
rdonly = 1;
} else if (!preen)
printf("\n");
1996-05-14 21:39:21 +04:00
if (dosfs < 0) {
perror("Can't open");
return 8;
}
if (readboot(dosfs, &boot) != FSOK) {
close(dosfs);
return 8;
}
if (!preen)
if (boot.ValidFat < 0)
printf("** Phase 1 - Read and Compare FATs\n");
else
printf("** Phase 1 - Read FAT\n");
mod |= readfat(dosfs, &boot, boot.ValidFat >= 0 ? boot.ValidFat : 0, &fat);
if (mod & FSFATAL) {
close(dosfs);
return 8;
}
if (boot.ValidFat < 0)
for (i = 1; i < boot.FATs; i++) {
struct fatEntry *currentFat;
1996-05-14 21:39:21 +04:00
mod |= readfat(dosfs, &boot, i, &currentFat);
1996-05-14 21:39:21 +04:00
if (mod & FSFATAL) {
free(fat);
close(dosfs);
return 8;
}
mod |= comparefat(&boot, fat, currentFat, i);
free(currentFat);
if (mod & FSFATAL) {
free(fat);
1996-05-14 21:39:21 +04:00
close(dosfs);
return 8;
}
}
if (!preen)
printf("** Phase 2 - Check Cluster Chains\n");
1996-05-14 21:39:21 +04:00
mod |= checkfat(&boot, fat);
if (mod & FSFATAL) {
free(fat);
1996-05-14 21:39:21 +04:00
close(dosfs);
return 8;
}
if (mod & FSFATMOD)
1996-05-14 21:39:21 +04:00
mod |= writefat(dosfs, &boot, fat); /* delay writing fats? XXX */
if (mod & FSFATAL) {
free(fat);
1996-05-14 21:39:21 +04:00
close(dosfs);
return 8;
}
if (!preen)
printf("** Phase 3 - Checking Directories\n");
mod |= resetDosDirSection(&boot, fat);
if (mod & FSFATAL) {
free(fat);
close(dosfs);
return 8;
}
if (mod & FSFATMOD)
mod |= writefat(dosfs, &boot, fat); /* delay writing fats? XXX */
if (mod & FSFATAL) {
finishDosDirSection();
free(fat);
1996-05-14 21:39:21 +04:00
close(dosfs);
return 8;
}
mod |= handleDirTree(dosfs, &boot, fat);
if (mod & FSFATAL) {
finishDosDirSection();
free(fat);
1996-05-14 21:39:21 +04:00
close(dosfs);
return 8;
}
1996-05-14 21:39:21 +04:00
if (!preen)
printf("** Phase 4 - Checking for Lost Files\n");
mod |= checklost(dosfs, &boot, fat);
if (mod & FSFATAL) {
finishDosDirSection();
free(fat);
close(dosfs);
return 8;
}
if (mod & FSFATMOD)
mod |= writefat(dosfs, &boot, fat); /* delay writing fats? XXX */
finishDosDirSection();
free(fat);
1996-05-14 21:39:21 +04:00
close(dosfs);
if (mod & FSFATAL)
return 8;
if (boot.NumBad)
pwarn("%d files, %d free (%d clusters), %d bad (%d clusters)\n",
boot.NumFiles,
boot.NumFree * boot.ClusterSize / 1024, boot.NumFree,
boot.NumBad * boot.ClusterSize / 1024, boot.NumBad);
else
pwarn("%d files, %d free (%d clusters)\n",
boot.NumFiles,
boot.NumFree * boot.ClusterSize / 1024, boot.NumFree);
if (mod & (FSFATAL | FSERROR))
1996-05-14 21:39:21 +04:00
return 8;
if (mod) {
pwarn("\n***** FILE SYSTEM WAS MODIFIED *****\n");
return 4;
}
return 0;
}