2 * Copyright (c) 1998 Robert Nordier
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in
12 * the documentation and/or other materials provided with the
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS
16 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
17 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY
19 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
21 * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
22 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
23 * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
24 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
25 * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 static const char rcsid[] =
33 #include <sys/param.h>
43 #include "mkfs_msdos.h"
45 #define argto1(arg, lo, msg) argtou(arg, lo, 0xff, msg)
46 #define argto2(arg, lo, msg) argtou(arg, lo, 0xffff, msg)
47 #define argto4(arg, lo, msg) argtou(arg, lo, 0xffffffff, msg)
48 #define argtox(arg, lo, msg) argtou(arg, lo, UINT_MAX, msg)
50 static u_int argtou(const char *, u_int, u_int, const char *);
51 static off_t argtooff(const char *, const char *);
52 static void usage(void);
55 get_tstamp(const char *b)
61 if (stat(b, &st) != -1)
62 return (time_t)st.st_mtime;
65 l = strtoll(b, &eb, 0);
66 if (b == eb || *eb || errno)
67 errx(EXIT_FAILURE, "Can't parse timestamp '%s'", b);
72 * Construct a FAT12, FAT16, or FAT32 file system.
75 main(int argc, char *argv[])
77 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:";
78 struct msdos_options o;
79 const char *fname, *dtype;
83 memset(&o, 0, sizeof(o));
85 while ((ch = getopt(argc, argv, opts)) != -1)
88 o.offset = argtooff(optarg, "offset");
97 o.create_size = argtooff(optarg, "create size");
100 if (strcmp(optarg, "12") &&
101 strcmp(optarg, "16") &&
102 strcmp(optarg, "32"))
103 errx(1, "%s: bad FAT type", optarg);
104 o.fat_type = atoi(optarg);
107 o.volume_id = argto4(optarg, 0, "volume ID");
111 o.volume_label = optarg;
114 o.OEM_string = optarg;
117 o.bytes_per_sector = argto2(optarg, 1, "bytes/sector");
120 o.sectors_per_fat = argto4(optarg, 1, "sectors/FAT");
123 o.block_size = argtox(optarg, 1, "block size");
124 o.sectors_per_cluster = 0;
127 o.sectors_per_cluster = argto1(optarg, 1, "sectors/cluster");
131 o.directory_entries = argto2(optarg, 1, "directory entries");
137 o.drive_heads = argto2(optarg, 1, "drive heads");
140 o.info_sector = argto2(optarg, 1, "info sector");
143 o.backup_sector = argto2(optarg, 1, "backup sector");
146 o.media_descriptor = argto1(optarg, 0, "media descriptor");
147 o.media_descriptor_set = 1;
150 o.num_FAT = argto1(optarg, 1, "number of FATs");
153 o.hidden_sectors = argto4(optarg, 0, "hidden sectors");
154 o.hidden_sectors_set = 1;
157 o.reserved_sectors = argto2(optarg, 1, "reserved sectors");
160 o.size = argto4(optarg, 1, "file system size");
164 o.timestamp = get_tstamp(optarg);
167 o.sectors_per_track = argto2(optarg, 1, "sectors/track");
174 if (argc < 1 || argc > 2)
177 if (!o.create_size && !strchr(fname, '/')) {
178 snprintf(buf, sizeof(buf), "%s%s", _PATH_DEV, fname);
179 if (!(fname = strdup(buf)))
183 return !!mkfs_msdos(fname, dtype, &o);
187 * Convert and check a numeric option argument.
190 argtou(const char *arg, u_int lo, u_int hi, const char *msg)
196 x = strtoul(arg, &s, 0);
197 if (errno || !*arg || *s || x < lo || x > hi)
198 errx(1, "%s: bad %s", arg, msg);
203 * Same for off_t, with optional skmgpP suffix
206 argtooff(const char *arg, const char *msg)
212 x = strtoll(arg, &s, 0);
213 /* allow at most one extra char */
214 if (errno || x < 0 || (s[0] && s[1]) )
215 errx(1, "%s: bad %s", arg, msg);
216 if (*s) { /* the extra char is the multiplier */
219 errx(1, "%s: bad %s", arg, msg);
222 case 's': /* sector */
224 x <<= 9; /* times 512 */
227 case 'k': /* kilobyte */
229 x <<= 10; /* times 1024 */
232 case 'm': /* megabyte */
234 x <<= 20; /* times 1024*1024 */
237 case 'g': /* gigabyte */
239 x <<= 30; /* times 1024*1024*1024 */
242 case 'p': /* partition start */
244 case 'l': /* partition length */
246 errx(1, "%s: not supported yet %s", arg, msg);
254 * Print usage message.
260 "usage: %s [ -options ] special [disktype]\n", getprogname());
261 fprintf(stderr, "where the options are:\n");
266 #define AOPT(_opt, _type, _name, _min, _desc) { _opt, _desc },
270 for (size_t i = 0; i < nitems(opts); i++)
271 fprintf(stderr, "\t-%c %s\n", opts[i].o, opts[i].h);