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