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2923ae8a85
PR: bin/168447 Submitted by: Boris Kochergin
195 lines
4.7 KiB
C
195 lines
4.7 KiB
C
/*
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* Copyright (C) 1995, 1996, 1997 Wolfgang Solfrank
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* Copyright (c) 1995 Martin Husemann
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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#ifndef lint
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__RCSID("$NetBSD: check.c,v 1.14 2006/06/05 16:51:18 christos Exp $");
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static const char rcsid[] =
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"$FreeBSD$";
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#endif /* not lint */
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#include <stdlib.h>
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#include <string.h>
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#include <stdio.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include "ext.h"
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#include "fsutil.h"
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int
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checkfilesys(const char *fname)
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{
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int dosfs;
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struct bootblock boot;
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struct fatEntry *fat = NULL;
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int finish_dosdirsection=0;
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u_int i;
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int mod = 0;
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int ret = 8;
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rdonly = alwaysno;
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if (!preen)
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printf("** %s", fname);
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dosfs = open(fname, rdonly ? O_RDONLY : O_RDWR, 0);
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if (dosfs < 0 && !rdonly) {
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dosfs = open(fname, O_RDONLY, 0);
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if (dosfs >= 0)
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pwarn(" (NO WRITE)\n");
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else if (!preen)
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printf("\n");
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rdonly = 1;
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} else if (!preen)
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printf("\n");
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if (dosfs < 0) {
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perr("Can't open `%s'", fname);
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printf("\n");
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return 8;
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}
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if (readboot(dosfs, &boot) != FSOK) {
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close(dosfs);
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printf("\n");
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return 8;
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}
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if (skipclean && preen && checkdirty(dosfs, &boot)) {
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printf("%s: ", fname);
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printf("FILESYSTEM CLEAN; SKIPPING CHECKS\n");
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ret = 0;
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goto out;
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}
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if (!preen) {
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if (boot.ValidFat < 0)
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printf("** Phase 1 - Read and Compare FATs\n");
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else
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printf("** Phase 1 - Read FAT\n");
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}
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mod |= readfat(dosfs, &boot, boot.ValidFat >= 0 ? boot.ValidFat : 0, &fat);
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if (mod & FSFATAL) {
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close(dosfs);
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return 8;
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}
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if (boot.ValidFat < 0)
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for (i = 1; i < boot.bpbFATs; i++) {
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struct fatEntry *currentFat;
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mod |= readfat(dosfs, &boot, i, ¤tFat);
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if (mod & FSFATAL)
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goto out;
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mod |= comparefat(&boot, fat, currentFat, i);
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free(currentFat);
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if (mod & FSFATAL)
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goto out;
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}
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if (!preen)
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printf("** Phase 2 - Check Cluster Chains\n");
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mod |= checkfat(&boot, fat);
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if (mod & FSFATAL)
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goto out;
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/* delay writing FATs */
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if (!preen)
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printf("** Phase 3 - Checking Directories\n");
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mod |= resetDosDirSection(&boot, fat);
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finish_dosdirsection = 1;
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if (mod & FSFATAL)
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goto out;
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/* delay writing FATs */
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mod |= handleDirTree(dosfs, &boot, fat);
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if (mod & FSFATAL)
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goto out;
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if (!preen)
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printf("** Phase 4 - Checking for Lost Files\n");
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mod |= checklost(dosfs, &boot, fat);
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if (mod & FSFATAL)
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goto out;
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/* now write the FATs */
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if (mod & FSFATMOD) {
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if (ask(1, "Update FATs")) {
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mod |= writefat(dosfs, &boot, fat, mod & FSFIXFAT);
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if (mod & FSFATAL)
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goto out;
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} else
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mod |= FSERROR;
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}
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if (boot.NumBad)
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pwarn("%d files, %d free (%d clusters), %d bad (%d clusters)\n",
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boot.NumFiles,
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boot.NumFree * boot.ClusterSize / 1024, boot.NumFree,
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boot.NumBad * boot.ClusterSize / 1024, boot.NumBad);
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else
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pwarn("%d files, %d free (%d clusters)\n",
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boot.NumFiles,
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boot.NumFree * boot.ClusterSize / 1024, boot.NumFree);
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if (mod && (mod & FSERROR) == 0) {
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if (mod & FSDIRTY) {
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if (ask(1, "MARK FILE SYSTEM CLEAN") == 0)
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mod &= ~FSDIRTY;
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if (mod & FSDIRTY) {
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pwarn("MARKING FILE SYSTEM CLEAN\n");
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mod |= writefat(dosfs, &boot, fat, 1);
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} else {
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pwarn("\n***** FILE SYSTEM IS LEFT MARKED AS DIRTY *****\n");
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mod |= FSERROR; /* file system not clean */
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}
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}
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}
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if (mod & (FSFATAL | FSERROR))
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goto out;
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ret = 0;
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out:
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if (finish_dosdirsection)
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finishDosDirSection();
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free(fat);
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close(dosfs);
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if (mod & (FSFATMOD|FSDIRMOD))
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pwarn("\n***** FILE SYSTEM WAS MODIFIED *****\n");
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return ret;
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}
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