1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3 *
4 * Copyright (C) 1995, 1996, 1997 Wolfgang Solfrank
5 * Copyright (c) 1995 Martin Husemann
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 *
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.
26 */
27
28
29 #include <sys/cdefs.h>
30 #ifndef lint
31 __RCSID("$NetBSD: check.c,v 1.14 2006/06/05 16:51:18 christos Exp $");
32 static const char rcsid[] =
33 "$FreeBSD$";
34 #endif /* not lint */
35
36 #ifdef HAVE_LIBUTIL_H
37 #include <libutil.h>
38 #endif
39 #include <stdlib.h>
40 #include <string.h>
41 #include <stdio.h>
42 #include <unistd.h>
43 #include <fcntl.h>
44
45 #include "ext.h"
46 #include "fsutil.h"
47
48 int
checkfilesys(const char * fname)49 checkfilesys(const char *fname)
50 {
51 int dosfs;
52 struct bootblock boot;
53 struct fat_descriptor *fat = NULL;
54 int finish_dosdirsection=0;
55 int mod = 0;
56 int ret = 8;
57 int64_t freebytes;
58 int64_t badbytes;
59
60 rdonly = alwaysno;
61 if (!preen)
62 printf("** %s", fname);
63
64 dosfs = open(fname, rdonly ? O_RDONLY : O_RDWR, 0);
65 if (dosfs < 0 && !rdonly) {
66 dosfs = open(fname, O_RDONLY, 0);
67 if (dosfs >= 0)
68 pwarn(" (NO WRITE)\n");
69 else if (!preen)
70 printf("\n");
71 rdonly = 1;
72 } else if (!preen)
73 printf("\n");
74
75 if (dosfs < 0) {
76 perr("Can't open `%s'", fname);
77 printf("\n");
78 return 8;
79 }
80
81 if (readboot(dosfs, &boot) == FSFATAL) {
82 close(dosfs);
83 printf("\n");
84 return 8;
85 }
86
87 if (skipclean && preen && checkdirty(dosfs, &boot)) {
88 printf("%s: ", fname);
89 printf("FILESYSTEM CLEAN; SKIPPING CHECKS\n");
90 ret = 0;
91 goto out;
92 }
93
94 if (!preen) {
95 printf("** Phase 1 - Read FAT and checking connectivity\n");
96 }
97
98 mod |= readfat(dosfs, &boot, &fat);
99 if (mod & FSFATAL) {
100 close(dosfs);
101 return 8;
102 }
103
104 if (!preen)
105 printf("** Phase 2 - Checking Directories\n");
106
107 mod |= resetDosDirSection(fat);
108 finish_dosdirsection = 1;
109 if (mod & FSFATAL)
110 goto out;
111 /* delay writing FATs */
112
113 mod |= handleDirTree(fat);
114 if (mod & FSFATAL)
115 goto out;
116
117 if (!preen)
118 printf("** Phase 3 - Checking for Lost Files\n");
119
120 mod |= checklost(fat);
121 if (mod & FSFATAL)
122 goto out;
123
124 /* now write the FATs */
125 if (mod & FSFATMOD) {
126 if (ask(1, "Update FATs")) {
127 mod |= writefat(fat);
128 if (mod & FSFATAL)
129 goto out;
130 } else
131 mod |= FSERROR;
132 }
133
134 freebytes = (int64_t)boot.NumFree * boot.ClusterSize;
135 badbytes = (int64_t)boot.NumBad * boot.ClusterSize;
136
137 #ifdef HAVE_LIBUTIL_H
138 char freestr[7], badstr[7];
139
140 humanize_number(freestr, sizeof(freestr), freebytes, "",
141 HN_AUTOSCALE, HN_DECIMAL | HN_IEC_PREFIXES);
142 if (boot.NumBad) {
143 humanize_number(badstr, sizeof(badstr), badbytes, "",
144 HN_AUTOSCALE, HN_B | HN_DECIMAL | HN_IEC_PREFIXES);
145
146 pwarn("%d files, %sB free (%d clusters), %sB bad (%d clusters)\n",
147 boot.NumFiles, freestr, boot.NumFree,
148 badstr, boot.NumBad);
149 } else {
150 pwarn("%d files, %sB free (%d clusters)\n",
151 boot.NumFiles, freestr, boot.NumFree);
152 }
153 #else
154 if (boot.NumBad)
155 pwarn("%d files, %jd KiB free (%d clusters), %jd KiB bad (%d clusters)\n",
156 boot.NumFiles, (intmax_t)freebytes / 1024, boot.NumFree,
157 (intmax_t)badbytes / 1024, boot.NumBad);
158 else
159 pwarn("%d files, %jd KiB free (%d clusters)\n",
160 boot.NumFiles, (intmax_t)freebytes / 1024, boot.NumFree);
161 #endif
162
163 if (mod && (mod & FSERROR) == 0) {
164 if (mod & FSDIRTY) {
165 if (ask(1, "MARK FILE SYSTEM CLEAN") == 0)
166 mod &= ~FSDIRTY;
167
168 if (mod & FSDIRTY) {
169 pwarn("MARKING FILE SYSTEM CLEAN\n");
170 mod |= cleardirty(fat);
171 } else {
172 pwarn("\n***** FILE SYSTEM IS LEFT MARKED AS DIRTY *****\n");
173 mod |= FSERROR; /* file system not clean */
174 }
175 }
176 }
177
178 if (mod & (FSFATAL | FSERROR))
179 goto out;
180
181 ret = 0;
182
183 out:
184 if (finish_dosdirsection)
185 finishDosDirSection();
186 free(fat);
187 close(dosfs);
188
189 if (mod & (FSFATMOD|FSDIRMOD)){
190 pwarn("\n***** FILE SYSTEM WAS MODIFIED *****\n");
191 return 4;
192 }
193
194 return ret;
195 }
196