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 58 rdonly = alwaysno; 59 if (!preen) 60 printf("** %s", fname); 61 62 dosfs = open(fname, rdonly ? O_RDONLY : O_RDWR, 0); 63 if (dosfs < 0 && !rdonly) { 64 dosfs = open(fname, O_RDONLY, 0); 65 if (dosfs >= 0) 66 pwarn(" (NO WRITE)\n"); 67 else if (!preen) 68 printf("\n"); 69 rdonly = 1; 70 } else if (!preen) 71 printf("\n"); 72 73 if (dosfs < 0) { 74 perr("Can't open `%s'", fname); 75 printf("\n"); 76 return 8; 77 } 78 79 if (readboot(dosfs, &boot) == FSFATAL) { 80 close(dosfs); 81 printf("\n"); 82 return 8; 83 } 84 85 if (skipclean && preen && checkdirty(dosfs, &boot)) { 86 printf("%s: ", fname); 87 printf("FILESYSTEM CLEAN; SKIPPING CHECKS\n"); 88 ret = 0; 89 goto out; 90 } 91 92 if (!preen) { 93 printf("** Phase 1 - Read FAT and checking connectivity\n"); 94 } 95 96 mod |= readfat(dosfs, &boot, &fat); 97 if (mod & FSFATAL) { 98 close(dosfs); 99 return 8; 100 } 101 102 if (!preen) 103 printf("** Phase 2 - Checking Directories\n"); 104 105 mod |= resetDosDirSection(fat); 106 finish_dosdirsection = 1; 107 if (mod & FSFATAL) 108 goto out; 109 /* delay writing FATs */ 110 111 mod |= handleDirTree(fat); 112 if (mod & FSFATAL) 113 goto out; 114 115 if (!preen) 116 printf("** Phase 3 - Checking for Lost Files\n"); 117 118 mod |= checklost(fat); 119 if (mod & FSFATAL) 120 goto out; 121 122 /* now write the FATs */ 123 if (mod & FSFATMOD) { 124 if (ask(1, "Update FATs")) { 125 mod |= writefat(fat); 126 if (mod & FSFATAL) 127 goto out; 128 } else 129 mod |= FSERROR; 130 } 131 132 #ifdef HAVE_LIBUTIL_H 133 char freestr[7], badstr[7]; 134 135 int64_t freebytes = boot.NumFree * boot.ClusterSize; 136 humanize_number(freestr, sizeof(freestr), freebytes, "", 137 HN_AUTOSCALE, HN_DECIMAL | HN_IEC_PREFIXES); 138 if (boot.NumBad) { 139 int64_t badbytes = boot.NumBad * boot.ClusterSize; 140 141 humanize_number(badstr, sizeof(badstr), badbytes, "", 142 HN_AUTOSCALE, HN_B | HN_DECIMAL | HN_IEC_PREFIXES); 143 144 pwarn("%d files, %sB free (%d clusters), %sB bad (%d clusters)\n", 145 boot.NumFiles, 146 freestr, boot.NumFree, 147 badstr, boot.NumBad); 148 } else { 149 pwarn("%d files, %sB free (%d clusters)\n", 150 boot.NumFiles, 151 freestr, boot.NumFree); 152 } 153 #else 154 if (boot.NumBad) 155 pwarn("%d files, %d KiB free (%d clusters), %d KiB bad (%d clusters)\n", 156 boot.NumFiles, 157 boot.NumFree * boot.ClusterSize / 1024, boot.NumFree, 158 boot.NumBad * boot.ClusterSize / 1024, boot.NumBad); 159 else 160 pwarn("%d files, %d KiB free (%d clusters)\n", 161 boot.NumFiles, 162 boot.NumFree * boot.ClusterSize / 1024, boot.NumFree); 163 #endif 164 165 if (mod && (mod & FSERROR) == 0) { 166 if (mod & FSDIRTY) { 167 if (ask(1, "MARK FILE SYSTEM CLEAN") == 0) 168 mod &= ~FSDIRTY; 169 170 if (mod & FSDIRTY) { 171 pwarn("MARKING FILE SYSTEM CLEAN\n"); 172 mod |= writefat(fat); 173 } else { 174 pwarn("\n***** FILE SYSTEM IS LEFT MARKED AS DIRTY *****\n"); 175 mod |= FSERROR; /* file system not clean */ 176 } 177 } 178 } 179 180 if (mod & (FSFATAL | FSERROR)) 181 goto out; 182 183 ret = 0; 184 185 out: 186 if (finish_dosdirsection) 187 finishDosDirSection(); 188 free(fat); 189 close(dosfs); 190 191 if (mod & (FSFATMOD|FSDIRMOD)) 192 pwarn("\n***** FILE SYSTEM WAS MODIFIED *****\n"); 193 194 return ret; 195 } 196