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