newfs_msdos.c revision 1.44
1 /* $NetBSD: newfs_msdos.c,v 1.44 2017/02/16 18:49:31 christos 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 1.44 2017/02/16 18:49:31 christos 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 <errno.h> 49 #include <util.h> 50 51 #include "mkfs_msdos.h" 52 53 #define argto1(arg, lo, msg) argtou(arg, lo, 0xff, msg) 54 #define argto2(arg, lo, msg) argtou(arg, lo, 0xffff, msg) 55 #define argto4(arg, lo, msg) argtou(arg, lo, 0xffffffff, msg) 56 #define argtox(arg, lo, msg) argtou(arg, lo, UINT_MAX, msg) 57 58 __dead static void usage(void); 59 static u_int argtou(const char *, u_int, u_int, const char *); 60 static off_t argtooff(const char *, const char *); 61 62 static time_t 63 get_tstamp(const char *b) 64 { 65 struct stat st; 66 char *eb; 67 long long l; 68 #ifndef HAVE_NBTOOL_CONFIG_H 69 time_t when; 70 #endif 71 72 if (stat(b, &st) != -1) 73 return (time_t)st.st_mtime; 74 75 #ifndef HAVE_NBTOOL_CONFIG_H 76 errno = 0; 77 if ((when = parsedate(b, NULL, NULL)) != -1 || errno == 0) 78 return when; 79 #endif 80 errno = 0; 81 l = strtoll(b, &eb, 0); 82 if (b == eb || *eb || errno) 83 errx(EXIT_FAILURE, "Can't parse timestamp `%s'", b); 84 return (time_t)l; 85 } 86 87 /* 88 * Construct a FAT12, FAT16, or FAT32 file system. 89 */ 90 int 91 main(int argc, char *argv[]) 92 { 93 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:"; 94 struct msdos_options o; 95 char *fname, *dtype; 96 char buf[MAXPATHLEN]; 97 int ch; 98 99 memset(&o, 0, sizeof(o)); 100 101 while ((ch = getopt(argc, argv, opts)) != -1) 102 switch (ch) { 103 case '@': 104 o.offset = argtooff(optarg, "offset"); 105 break; 106 case 'N': 107 o.no_create = 1; 108 break; 109 case 'B': 110 o.bootstrap = optarg; 111 break; 112 case 'C': 113 o.create_size = argtooff(optarg, "create size"); 114 break; 115 case 'F': 116 o.fat_type = atoi(optarg); 117 break; 118 case 'I': 119 o.volume_id = argto4(optarg, 0, "volume ID"); 120 o.volume_id_set = 1; 121 break; 122 case 'L': 123 o.volume_label = optarg; 124 break; 125 case 'O': 126 o.OEM_string = optarg; 127 break; 128 case 'S': 129 o.bytes_per_sector = argto2(optarg, 1, "bytes/sector"); 130 break; 131 case 'a': 132 o.sectors_per_fat = argto4(optarg, 1, "sectors/FAT"); 133 break; 134 case 'b': 135 o.block_size = argtox(optarg, 1, "block size"); 136 break; 137 case 'c': 138 o.sectors_per_cluster = argto1(optarg, 1, "sectors/cluster"); 139 break; 140 case 'e': 141 o.directory_entries = argto2(optarg, 1, "directory entries"); 142 break; 143 case 'f': 144 o.floppy = optarg; 145 break; 146 case 'h': 147 o.drive_heads = argto2(optarg, 1, "drive heads"); 148 break; 149 case 'i': 150 o.info_sector = argto2(optarg, 1, "info sector"); 151 break; 152 case 'k': 153 o.backup_sector = argto2(optarg, 1, "backup sector"); 154 break; 155 case 'm': 156 o.media_descriptor = argto1(optarg, 0, "media descriptor"); 157 o.media_descriptor_set = 1; 158 break; 159 case 'n': 160 o.num_FAT = argto1(optarg, 1, "number of FATs"); 161 break; 162 case 'o': 163 o.hidden_sectors = argto4(optarg, 0, "hidden sectors"); 164 o.hidden_sectors_set = 1; 165 break; 166 case 'r': 167 o.reserved_sectors = argto2(optarg, 1, "reserved sectors"); 168 break; 169 case 's': 170 o.size = argto4(optarg, 1, "file system size"); 171 break; 172 case 'T': 173 o.timestamp = get_tstamp(optarg); 174 break; 175 case 'u': 176 o.sectors_per_track = argto2(optarg, 1, "sectors/track"); 177 break; 178 default: 179 usage(); 180 } 181 argc -= optind; 182 argv += optind; 183 if (argc < 1 || argc > 2) 184 usage(); 185 fname = *argv++; 186 if (!strchr(fname, '/') && !o.create_size) { 187 snprintf(buf, sizeof(buf), "%sr%s", _PATH_DEV, fname); 188 if (!(fname = strdup(buf))) 189 err(1, NULL); 190 } 191 dtype = *argv; 192 return mkfs_msdos(fname, dtype, &o); 193 } 194 195 /* 196 * Convert and check a numeric option argument. 197 */ 198 static u_int 199 argtou(const char *arg, u_int lo, u_int hi, const char *msg) 200 { 201 off_t x; 202 203 errno = 0; 204 x = argtooff(arg, msg); 205 if (x < lo || x > hi) 206 errx(1, "%s: bad %s", arg, msg); 207 return (u_int)x; 208 } 209 210 /* 211 * Same for off_t, with optional skmgpP suffix 212 */ 213 static off_t 214 argtooff(const char *arg, const char *msg) 215 { 216 char *s; 217 off_t x; 218 219 errno = 0; 220 x = strtoll(arg, &s, 0); 221 /* allow at most one extra char */ 222 if (errno || x < 0 || (s[0] && s[1]) ) 223 errx(1, "%s: bad %s", arg, msg); 224 if (*s) { /* the extra char is the multiplier */ 225 switch (*s) { 226 default: 227 errx(1, "%s: bad %s", arg, msg); 228 /* notreached */ 229 230 case 's': /* sector */ 231 case 'S': 232 x <<= 9; /* times 512 */ 233 break; 234 235 case 'k': /* kilobyte */ 236 case 'K': 237 x <<= 10; /* times 1024 */ 238 break; 239 240 case 'm': /* megabyte */ 241 case 'M': 242 x <<= 20; /* times 1024*1024 */ 243 break; 244 245 case 'g': /* gigabyte */ 246 case 'G': 247 x <<= 30; /* times 1024*1024*1024 */ 248 break; 249 250 case 'p': /* partition start */ 251 case 'P': /* partition start */ 252 case 'l': /* partition length */ 253 case 'L': /* partition length */ 254 errx(1, "%s: not supported yet %s", arg, msg); 255 return -1; 256 /* notreached */ 257 } 258 } 259 return x; 260 } 261 262 /* 263 * Print usage message. 264 */ 265 static void 266 usage(void) 267 { 268 fprintf(stderr, 269 "usage: %s [ -options ] special [disktype]\n", getprogname()); 270 fprintf(stderr, "where the options are:\n"); 271 static struct { 272 char o; 273 const char *h; 274 } opts[] = { 275 #define AOPT(_opt, _type, _name, _min, _desc) { _opt, _desc }, 276 ALLOPTS 277 #undef AOPT 278 }; 279 for (size_t i = 0; i < __arraycount(opts); i++) 280 fprintf(stderr, "\t-%c %s\n", opts[i].o, opts[i].h); 281 exit(1); 282 } 283
Indexes created Wed Oct 22 13:09:56 GMT 2025