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 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"); 191 192 return ret; 193 } 194