2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
4 * Copyright (C) 1995, 1996, 1997 Wolfgang Solfrank
5 * Copyright (c) 1995 Martin Husemann
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
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.
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
19 * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT,
20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
39 checkfilesys(const char *fname)
42 struct bootblock boot;
43 struct fatEntry *fat = NULL;
44 int i, finish_dosdirsection=0;
50 printf("** %s", fname);
52 dosfs = open(fname, rdonly ? O_RDONLY : O_RDWR, 0);
53 if (dosfs < 0 && !rdonly) {
54 dosfs = open(fname, O_RDONLY, 0);
56 pwarn(" (NO WRITE)\n");
64 perr("Can't open `%s'", fname);
68 if (readboot(dosfs, &boot) != FSOK) {
75 if (boot.ValidFat < 0)
76 printf("** Phase 1 - Read and Compare FATs\n");
78 printf("** Phase 1 - Read FAT\n");
81 mod |= readfat(dosfs, &boot, boot.ValidFat >= 0 ? boot.ValidFat : 0, &fat);
87 if (boot.ValidFat < 0)
88 for (i = 1; i < boot.bpbFATs; i++) {
89 struct fatEntry *currentFat;
91 mod |= readfat(dosfs, &boot, i, ¤tFat);
96 mod |= comparefat(&boot, fat, currentFat, i);
103 printf("** Phase 2 - Check Cluster Chains\n");
105 mod |= checkfat(&boot, fat);
108 /* delay writing FATs */
111 printf("** Phase 3 - Checking Directories\n");
113 mod |= resetDosDirSection(&boot, fat);
114 finish_dosdirsection = 1;
117 /* delay writing FATs */
119 mod |= handleDirTree(dosfs, &boot, fat);
124 printf("** Phase 4 - Checking for Lost Files\n");
126 mod |= checklost(dosfs, &boot, fat);
130 /* now write the FATs */
131 if (mod & FSFATMOD) {
132 if (ask(1, "Update FATs")) {
133 mod |= writefat(dosfs, &boot, fat, mod & FSFIXFAT);
141 pwarn("%d files, %d free (%d clusters), %d bad (%d clusters)\n",
143 boot.NumFree * boot.ClusterSize / 1024, boot.NumFree,
144 boot.NumBad * boot.ClusterSize / 1024, boot.NumBad);
146 pwarn("%d files, %d free (%d clusters)\n",
148 boot.NumFree * boot.ClusterSize / 1024, boot.NumFree);
150 if (mod && (mod & FSERROR) == 0) {
152 if (ask(1, "MARK FILE SYSTEM CLEAN") == 0)
156 pwarn("MARKING FILE SYSTEM CLEAN\n");
157 mod |= writefat(dosfs, &boot, fat, 1);
159 pwarn("\n***** FILE SYSTEM IS LEFT MARKED AS DIRTY *****\n");
160 mod |= FSERROR; /* file system not clean */
165 if (mod & (FSFATAL | FSERROR))
171 if (finish_dosdirsection)
172 finishDosDirSection();
176 if (mod & (FSFATMOD|FSDIRMOD))
177 pwarn("\n***** FILE SYSTEM WAS MODIFIED *****\n");