newfs_msdos.c revision 1.36.2.3
1 /* $NetBSD: newfs_msdos.c,v 1.36.2.3 2013/01/23 00:05:32 yamt Exp $ */ 2 3 /* 4 * Copyright (c) 1998 Robert Nordier 5 * All rights reserved. 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 14 * the documentation and/or other materials provided with the 15 * distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS 18 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 19 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY 21 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE 23 * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 24 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER 25 * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 26 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN 27 * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 */ 29 30 #include <sys/cdefs.h> 31 #ifndef lint 32 #if 0 33 static const char rcsid[] = 34 "$FreeBSD: src/sbin/newfs_msdos/newfs_msdos.c,v 1.15 2000/10/10 01:49:37 wollman Exp $"; 35 #else 36 __RCSID("$NetBSD: newfs_msdos.c,v 1.36.2.3 2013/01/23 00:05:32 yamt Exp $"); 37 #endif 38 #endif /* not lint */ 39 40 #include <sys/param.h> 41 #include <stdio.h> 42 #include <string.h> 43 #include <err.h> 44 #include <stdlib.h> 45 #include <unistd.h> 46 #include <paths.h> 47 #include <errno.h> 48 49 #include "mkfs_msdos.h" 50 51 #define argto1(arg, lo, msg) argtou(arg, lo, 0xff, msg) 52 #define argto2(arg, lo, msg) argtou(arg, lo, 0xffff, msg) 53 #define argto4(arg, lo, msg) argtou(arg, lo, 0xffffffff, msg) 54 #define argtox(arg, lo, msg) argtou(arg, lo, UINT_MAX, msg) 55 56 __dead static void usage(void); 57 static u_int argtou(const char *, u_int, u_int, const char *); 58 static off_t argtooff(const char *, const char *); 59 60 /* 61 * Construct a FAT12, FAT16, or FAT32 file system. 62 */ 63 int 64 main(int argc, char *argv[]) 65 { 66 static const char opts[] = "@:NB:C:F:I:L:O:S:a:b:c:e:f:h:i:k:m:n:o:r:s:u:"; 67 struct msdos_options o; 68 char *fname, *dtype; 69 char buf[MAXPATHLEN]; 70 int ch; 71 72 memset(&o, 0, sizeof(o)); 73 74 while ((ch = getopt(argc, argv, opts)) != -1) 75 switch (ch) { 76 case '@': 77 o.offset = argtooff(optarg, "offset"); 78 break; 79 case 'N': 80 o.no_create = 1; 81 break; 82 case 'B': 83 o.bootstrap = optarg; 84 break; 85 case 'C': 86 o.create_size = argtooff(optarg, "create size"); 87 break; 88 case 'F': 89 o.fat_type = atoi(optarg); 90 break; 91 case 'I': 92 o.volume_id = argto4(optarg, 0, "volume ID"); 93 o.volume_id_set = 1; 94 break; 95 case 'L': 96 o.volume_label = optarg; 97 break; 98 case 'O': 99 o.OEM_string = optarg; 100 break; 101 case 'S': 102 o.bytes_per_sector = argto2(optarg, 1, "bytes/sector"); 103 break; 104 case 'a': 105 o.sectors_per_fat = argto4(optarg, 1, "sectors/FAT"); 106 break; 107 case 'b': 108 o.block_size = argtox(optarg, 1, "block size"); 109 break; 110 case 'c': 111 o.sectors_per_cluster = argto1(optarg, 1, "sectors/cluster"); 112 break; 113 case 'e': 114 o.directory_entries = argto2(optarg, 1, "directory entries"); 115 break; 116 case 'f': 117 o.floppy = optarg; 118 break; 119 case 'h': 120 o.drive_heads = argto2(optarg, 1, "drive heads"); 121 break; 122 case 'i': 123 o.info_sector = argto2(optarg, 1, "info sector"); 124 break; 125 case 'k': 126 o.backup_sector = argto2(optarg, 1, "backup sector"); 127 break; 128 case 'm': 129 o.media_descriptor = argto1(optarg, 0, "media descriptor"); 130 o.media_descriptor_set = 1; 131 break; 132 case 'n': 133 o.num_FAT = argto1(optarg, 1, "number of FATs"); 134 break; 135 case 'o': 136 o.hidden_sectors = argto4(optarg, 0, "hidden sectors"); 137 o.hidden_sectors_set = 1; 138 break; 139 case 'r': 140 o.reserved_sectors = argto2(optarg, 1, "reserved sectors"); 141 break; 142 case 's': 143 o.size = argto4(optarg, 1, "file system size"); 144 break; 145 case 'u': 146 o.sectors_per_track = argto2(optarg, 1, "sectors/track"); 147 break; 148 default: 149 usage(); 150 } 151 argc -= optind; 152 argv += optind; 153 if (argc < 1 || argc > 2) 154 usage(); 155 fname = *argv++; 156 if (!strchr(fname, '/') && !o.create_size) { 157 snprintf(buf, sizeof(buf), "%sr%s", _PATH_DEV, fname); 158 if (!(fname = strdup(buf))) 159 err(1, NULL); 160 } 161 dtype = *argv; 162 return mkfs_msdos(fname, dtype, &o); 163 } 164 165 /* 166 * Convert and check a numeric option argument. 167 */ 168 static u_int 169 argtou(const char *arg, u_int lo, u_int hi, const char *msg) 170 { 171 char *s; 172 u_long x; 173 174 errno = 0; 175 x = strtoul(arg, &s, 0); 176 if (errno || !*arg || *s || x < lo || x > hi) 177 errx(1, "%s: bad %s", arg, msg); 178 return x; 179 } 180 181 /* 182 * Same for off_t, with optional skmgpP suffix 183 */ 184 static off_t 185 argtooff(const char *arg, const char *msg) 186 { 187 char *s; 188 off_t x; 189 190 errno = 0; 191 x = strtoll(arg, &s, 0); 192 /* allow at most one extra char */ 193 if (errno || x < 0 || (s[0] && s[1]) ) 194 errx(1, "%s: bad %s", arg, msg); 195 if (*s) { /* the extra char is the multiplier */ 196 switch (*s) { 197 default: 198 errx(1, "%s: bad %s", arg, msg); 199 /* notreached */ 200 201 case 's': /* sector */ 202 case 'S': 203 x <<= 9; /* times 512 */ 204 break; 205 206 case 'k': /* kilobyte */ 207 case 'K': 208 x <<= 10; /* times 1024 */ 209 break; 210 211 case 'm': /* megabyte */ 212 case 'M': 213 x <<= 20; /* times 1024*1024 */ 214 break; 215 216 case 'g': /* gigabyte */ 217 case 'G': 218 x <<= 30; /* times 1024*1024*1024 */ 219 break; 220 221 case 'p': /* partition start */ 222 case 'P': /* partition start */ 223 case 'l': /* partition length */ 224 case 'L': /* partition length */ 225 errx(1, "%s: not supported yet %s", arg, msg); 226 return -1; 227 /* notreached */ 228 } 229 } 230 return x; 231 } 232 233 /* 234 * Print usage message. 235 */ 236 static void 237 usage(void) 238 { 239 fprintf(stderr, 240 "usage: %s [ -options ] special [disktype]\n", getprogname()); 241 fprintf(stderr, "where the options are:\n"); 242 static struct { 243 char o; 244 const char *h; 245 } opts[] = { 246 #define AOPT(a, b, c, d) { a, d }, 247 ALLOPTS 248 #undef AOPT 249 }; 250 for (size_t i = 0; i < __arraycount(opts); i++) 251 fprintf(stderr, "\t-%c %s\n", opts[i].o, opts[i].h); 252 exit(1); 253 } 254
Indexes created Wed Oct 22 13:09:56 GMT 2025