1 /* $NetBSD: newfs_msdos.c,v 1.47 2026/05/03 17:49:58 kre 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 1.47 2026/05/03 17:49:58 kre Exp $"); 37 #endif 38 #endif /* not lint */ 39 40 #include <sys/param.h> 41 #include <sys/stat.h> 42 #include <stdio.h> 43 #include <string.h> 44 #include <err.h> 45 #include <stdlib.h> 46 #include <unistd.h> 47 #include <paths.h> 48 #include <fcntl.h> 49 #include <errno.h> 50 #include <util.h> 51 52 #include "mkfs_msdos.h" 53 #include "partutil.h" 54 55 #define argto1(arg, lo, msg) argtou(arg, lo, 0xff, msg) 56 #define argto2(arg, lo, msg) argtou(arg, lo, 0xffff, msg) 57 #define argto4(arg, lo, msg) argtou(arg, lo, 0xffffffff, msg) 58 #define argtox(arg, lo, msg) argtou(arg, lo, UINT_MAX, msg) 59 60 __dead static void usage(void); 61 static u_int argtou(const char *, u_int, u_int, const char *); 62 static off_t argtooff(const char *, const char *); 63 64 static time_t 65 get_tstamp(const char *b) 66 { 67 struct stat st; 68 char *eb; 69 long long l; 70 #ifndef HAVE_NBTOOL_CONFIG_H 71 time_t when; 72 #endif 73 74 if (stat(b, &st) != -1) 75 return (time_t)st.st_mtime; 76 77 #ifndef HAVE_NBTOOL_CONFIG_H 78 errno = 0; 79 if ((when = parsedate(b, NULL, NULL)) != -1 || errno == 0) 80 return when; 81 #endif 82 errno = 0; 83 l = strtoll(b, &eb, 0); 84 if (b == eb || *eb || errno) 85 errx(EXIT_FAILURE, "Can't parse timestamp `%s'", b); 86 return (time_t)l; 87 } 88 89 /* 90 * Construct a FAT12, FAT16, or FAT32 file system. 91 */ 92 int 93 main(int argc, char *argv[]) 94 { 95 static const char opts[] = "@:NB:C:F:I:L:O:S:a:b:c:e:f:h:i:k:m:n:o:r:s:T:u:"; 96 struct msdos_options o; 97 const char *fname, *dtype; 98 char device[MAXPATHLEN]; 99 int ch; 100 101 memset(&o, 0, sizeof(o)); 102 103 while ((ch = getopt(argc, argv, opts)) != -1) 104 switch (ch) { 105 case '@': 106 o.offset = argtooff(optarg, "offset"); 107 break; 108 case 'N': 109 o.no_create = 1; 110 break; 111 case 'B': 112 o.bootstrap = optarg; 113 break; 114 case 'C': 115 o.create_size = argtooff(optarg, "create size"); 116 break; 117 case 'F': 118 o.fat_type = atoi(optarg); 119 break; 120 case 'I': 121 o.volume_id = argto4(optarg, 0, "volume ID"); 122 o.volume_id_set = 1; 123 break; 124 case 'L': 125 o.volume_label = optarg; 126 break; 127 case 'O': 128 o.OEM_string = optarg; 129 break; 130 case 'S': 131 o.bytes_per_sector = argto2(optarg, 1, "bytes/sector"); 132 break; 133 case 'a': 134 o.sectors_per_fat = argto4(optarg, 1, "sectors/FAT"); 135 break; 136 case 'b': 137 o.block_size = argtox(optarg, 1, "block size"); 138 break; 139 case 'c': 140 o.sectors_per_cluster = argto1(optarg, 1, "sectors/cluster"); 141 break; 142 case 'e': 143 o.directory_entries = argto2(optarg, 1, "directory entries"); 144 break; 145 case 'f': 146 o.floppy = optarg; 147 break; 148 case 'h': 149 o.drive_heads = argto2(optarg, 1, "drive heads"); 150 break; 151 case 'i': 152 o.info_sector = argto2(optarg, 1, "info sector"); 153 break; 154 case 'k': 155 o.backup_sector = argto2(optarg, 1, "backup sector"); 156 break; 157 case 'm': 158 o.media_descriptor = argto1(optarg, 0, "media descriptor"); 159 o.media_descriptor_set = 1; 160 break; 161 case 'n': 162 o.num_FAT = argto1(optarg, 1, "number of FATs"); 163 break; 164 case 'o': 165 o.hidden_sectors = argto4(optarg, 0, "hidden sectors"); 166 o.hidden_sectors_set = 1; 167 break; 168 case 'r': 169 o.reserved_sectors = argto2(optarg, 1, "reserved sectors"); 170 break; 171 case 's': 172 o.size = argto4(optarg, 1, "file system size"); 173 break; 174 case 'T': 175 o.timestamp_set = 1; 176 o.timestamp = get_tstamp(optarg); 177 break; 178 case 'u': 179 o.sectors_per_track = argto2(optarg, 1, "sectors/track"); 180 break; 181 default: 182 usage(); 183 } 184 argc -= optind; 185 argv += optind; 186 if (argc < 1 || argc > 2) 187 usage(); 188 fname = findspecial(*argv, 0); 189 if (fname == NULL) 190 fname = *argv; 191 if (strchr(fname, '/') == NULL && o.create_size == 0) { 192 snprintf(device, sizeof(device), "%sr%s", _PATH_DEV, fname); 193 if ((fname = strdup(device)) == NULL) 194 err(1, NULL); 195 } 196 dtype = *++argv; 197 return mkfs_msdos(fname, dtype, &o); 198 } 199 200 /* 201 * Convert and check a numeric option argument. 202 */ 203 static u_int 204 argtou(const char *arg, u_int lo, u_int hi, const char *msg) 205 { 206 off_t x; 207 208 errno = 0; 209 x = argtooff(arg, msg); 210 if (x < lo || x > hi) 211 errx(1, "%s: bad %s", arg, msg); 212 return (u_int)x; 213 } 214 215 /* 216 * Same for off_t, with optional skmgpP suffix 217 */ 218 static off_t 219 argtooff(const char *arg, const char *msg) 220 { 221 char *s; 222 off_t x; 223 224 errno = 0; 225 x = strtoll(arg, &s, 0); 226 /* allow at most one extra char */ 227 if (errno || x < 0 || (s[0] && s[1]) ) 228 errx(1, "%s: bad %s", arg, msg); 229 if (*s) { /* the extra char is the multiplier */ 230 switch (*s) { 231 default: 232 errx(1, "%s: bad %s", arg, msg); 233 /* notreached */ 234 235 case 's': /* sector */ 236 case 'S': 237 x <<= 9; /* times 512 */ 238 break; 239 240 case 'k': /* kilobyte */ 241 case 'K': 242 x <<= 10; /* times 1024 */ 243 break; 244 245 case 'm': /* megabyte */ 246 case 'M': 247 x <<= 20; /* times 1024*1024 */ 248 break; 249 250 case 'g': /* gigabyte */ 251 case 'G': 252 x <<= 30; /* times 1024*1024*1024 */ 253 break; 254 255 case 'p': /* partition start */ 256 case 'P': /* partition start */ 257 case 'l': /* partition length */ 258 case 'L': /* partition length */ 259 errx(1, "%s: not supported yet %s", arg, msg); 260 /* notreached */ 261 } 262 } 263 return x; 264 } 265 266 /* 267 * Print usage message. 268 */ 269 static void 270 usage(void) 271 { 272 fprintf(stderr, 273 "usage: %s [ -options ] special [disktype]\n", getprogname()); 274 fprintf(stderr, "where the options are:\n"); 275 static struct { 276 char o; 277 const char *h; 278 } opts[] = { 279 #define AOPT(_opt, _type, _name, _min, _desc) { _opt, _desc }, 280 ALLOPTS 281 #undef AOPT 282 }; 283 for (size_t i = 0; i < __arraycount(opts); i++) 284 fprintf(stderr, "\t-%c %s\n", opts[i].o, opts[i].h); 285 exit(1); 286 } 287
Indexes created Sun Oct 25 00:26:45 UTC 2026