31#endif /* not lint */
32
33#include <sys/param.h>
34#include <sys/stat.h>
35#include <sys/diskslice.h>
36#include <sys/disklabel.h>
37#include <sys/mount.h>
38
39#include <ctype.h>
40#include <err.h>
41#include <errno.h>
42#include <fcntl.h>
43#include <paths.h>
44#include <stdio.h>
45#include <stdlib.h>
46#include <string.h>
47#include <unistd.h>
48
49#define MAXU16 0xffff /* maximum unsigned 16-bit quantity */
50#define BPN 4 /* bits per nibble */
51#define NPB 2 /* nibbles per byte */
52
53#define DOSMAGIC 0xaa55 /* DOS magic number */
54#define MINBPS 128 /* minimum bytes per sector */
55#define MAXSPC 128 /* maximum sectors per cluster */
56#define MAXNFT 16 /* maximum number of FATs */
57#define DEFBLK 4096 /* default block size */
58#define DEFBLK16 2048 /* default block size FAT16 */
59#define DEFRDE 512 /* default root directory entries */
60#define RESFTE 2 /* reserved FAT entries */
61#define MINCLS12 1 /* minimum FAT12 clusters */
62#define MINCLS16 0x1000 /* minimum FAT16 clusters */
63#define MINCLS32 2 /* minimum FAT32 clusters */
64#define MAXCLS12 0xfed /* maximum FAT12 clusters */
65#define MAXCLS16 0xfff5 /* maximum FAT16 clusters */
66#define MAXCLS32 0xffffff5 /* maximum FAT32 clusters */
67
68#define mincls(fat) ((fat) == 12 ? MINCLS12 : \
69 (fat) == 16 ? MINCLS16 : \
70 MINCLS32)
71
72#define maxcls(fat) ((fat) == 12 ? MAXCLS12 : \
73 (fat) == 16 ? MAXCLS16 : \
74 MAXCLS32)
75
76#define mk1(p, x) \
77 (p) = (u_int8_t)(x)
78
79#define mk2(p, x) \
80 (p)[0] = (u_int8_t)(x), \
81 (p)[1] = (u_int8_t)((x) >> 010)
82
83#define mk4(p, x) \
84 (p)[0] = (u_int8_t)(x), \
85 (p)[1] = (u_int8_t)((x) >> 010), \
86 (p)[2] = (u_int8_t)((x) >> 020), \
87 (p)[3] = (u_int8_t)((x) >> 030)
88
89#define argto1(arg, lo, msg) argtou(arg, lo, 0xff, msg)
90#define argto2(arg, lo, msg) argtou(arg, lo, 0xffff, msg)
91#define argto4(arg, lo, msg) argtou(arg, lo, 0xffffffff, msg)
92#define argtox(arg, lo, msg) argtou(arg, lo, UINT_MAX, msg)
93
94struct bs {
95 u_int8_t jmp[3]; /* bootstrap entry point */
96 u_int8_t oem[8]; /* OEM name and version */
97};
98
99struct bsbpb {
100 u_int8_t bps[2]; /* bytes per sector */
101 u_int8_t spc; /* sectors per cluster */
102 u_int8_t res[2]; /* reserved sectors */
103 u_int8_t nft; /* number of FATs */
104 u_int8_t rde[2]; /* root directory entries */
105 u_int8_t sec[2]; /* total sectors */
106 u_int8_t mid; /* media descriptor */
107 u_int8_t spf[2]; /* sectors per FAT */
108 u_int8_t spt[2]; /* sectors per track */
109 u_int8_t hds[2]; /* drive heads */
110 u_int8_t hid[4]; /* hidden sectors */
111 u_int8_t bsec[4]; /* big total sectors */
112};
113
114struct bsxbpb {
115 u_int8_t bspf[4]; /* big sectors per FAT */
116 u_int8_t xflg[2]; /* FAT control flags */
117 u_int8_t vers[2]; /* file system version */
118 u_int8_t rdcl[4]; /* root directory start cluster */
119 u_int8_t infs[2]; /* file system info sector */
120 u_int8_t bkbs[2]; /* backup boot sector */
121 u_int8_t rsvd[12]; /* reserved */
122};
123
124struct bsx {
125 u_int8_t drv; /* drive number */
126 u_int8_t rsvd; /* reserved */
127 u_int8_t sig; /* extended boot signature */
128 u_int8_t volid[4]; /* volume ID number */
129 u_int8_t label[11]; /* volume label */
130 u_int8_t type[8]; /* file system type */
131};
132
133struct de {
134 u_int8_t namext[11]; /* name and extension */
135 u_int8_t attr; /* attributes */
136 u_int8_t rsvd[10]; /* reserved */
137 u_int8_t time[2]; /* creation time */
138 u_int8_t date[2]; /* creation date */
139 u_int8_t clus[2]; /* starting cluster */
140 u_int8_t size[4]; /* size */
141};
142
143struct bpb {
144 u_int bps; /* bytes per sector */
145 u_int spc; /* sectors per cluster */
146 u_int res; /* reserved sectors */
147 u_int nft; /* number of FATs */
148 u_int rde; /* root directory entries */
149 u_int sec; /* total sectors */
150 u_int mid; /* media descriptor */
151 u_int spf; /* sectors per FAT */
152 u_int spt; /* sectors per track */
153 u_int hds; /* drive heads */
154 u_int hid; /* hidden sectors */
155 u_int bsec; /* big total sectors */
156 u_int bspf; /* big sectors per FAT */
157 u_int rdcl; /* root directory start cluster */
158 u_int infs; /* file system info sector */
159 u_int bkbs; /* backup boot sector */
160};
161
162static struct {
163 const char *name;
164 struct bpb bpb;
165} stdfmt[] = {
166 {"160", {512, 1, 1, 2, 64, 320, 0xfe, 1, 8, 1}},
167 {"180", {512, 1, 1, 2, 64, 360, 0xfc, 2, 9, 1}},
168 {"320", {512, 2, 1, 2, 112, 640, 0xff, 1, 8, 2}},
169 {"360", {512, 2, 1, 2, 112, 720, 0xfd, 2, 9, 2}},
170 {"720", {512, 2, 1, 2, 112, 1440, 0xf9, 3, 9, 2}},
171 {"1200", {512, 1, 1, 2, 224, 2400, 0xf9, 7, 15, 2}},
172 {"1440", {512, 1, 1, 2, 224, 2880, 0xf0, 9, 18, 2}},
173 {"2880", {512, 2, 1, 2, 240, 5760, 0xf0, 9, 36, 2}}
174};
175
176static u_int8_t bootcode[] = {
177 0xfa, /* cli */
178 0x31, 0xc0, /* xor ax,ax */
179 0x8e, 0xd0, /* mov ss,ax */
180 0xbc, 0x00, 0x7c, /* mov sp,7c00h */
181 0xfb, /* sti */
182 0x8e, 0xd8, /* mov ds,ax */
183 0xe8, 0x00, 0x00, /* call $ + 3 */
184 0x5e, /* pop si */
185 0x83, 0xc6, 0x19, /* add si,+19h */
186 0xbb, 0x07, 0x00, /* mov bx,0007h */
187 0xfc, /* cld */
188 0xac, /* lodsb */
189 0x84, 0xc0, /* test al,al */
190 0x74, 0x06, /* jz $ + 8 */
191 0xb4, 0x0e, /* mov ah,0eh */
192 0xcd, 0x10, /* int 10h */
193 0xeb, 0xf5, /* jmp $ - 9 */
194 0x30, 0xe4, /* xor ah,ah */
195 0xcd, 0x16, /* int 16h */
196 0xcd, 0x19, /* int 19h */
197 0x0d, 0x0a,
198 'N', 'o', 'n', '-', 's', 'y', 's', 't',
199 'e', 'm', ' ', 'd', 'i', 's', 'k',
200 0x0d, 0x0a,
201 'P', 'r', 'e', 's', 's', ' ', 'a', 'n',
202 'y', ' ', 'k', 'e', 'y', ' ', 't', 'o',
203 ' ', 'r', 'e', 'b', 'o', 'o', 't',
204 0x0d, 0x0a,
205 0
206};
207
208static void check_mounted(const char *, mode_t);
209static void getstdfmt(const char *, struct bpb *);
210static void getdiskinfo(int, const char *, const char *, int,
211 struct bpb *);
212static void print_bpb(struct bpb *);
213static u_int ckgeom(const char *, u_int, const char *);
214static u_int argtou(const char *, u_int, u_int, const char *);
215static int oklabel(const char *);
216static void mklabel(u_int8_t *, const char *);
217static void setstr(u_int8_t *, const char *, size_t);
218static void usage(void);
219
220/*
221 * Construct a FAT12, FAT16, or FAT32 file system.
222 */
223int
224main(int argc, char *argv[])
225{
226 static char opts[] = "NB:F:I:L:O:S:a:b:c:e:f:h:i:k:m:n:o:r:s:u:";
227 static const char *opt_B, *opt_L, *opt_O, *opt_f;
228 static u_int opt_F, opt_I, opt_S, opt_a, opt_b, opt_c, opt_e;
229 static u_int opt_h, opt_i, opt_k, opt_m, opt_n, opt_o, opt_r;
230 static u_int opt_s, opt_u;
231 static int opt_N;
232 static int Iflag, mflag, oflag;
233 char buf[MAXPATHLEN];
234 struct stat sb;
235 struct timeval tv;
236 struct bpb bpb;
237 struct tm *tm;
238 struct bs *bs;
239 struct bsbpb *bsbpb;
240 struct bsxbpb *bsxbpb;
241 struct bsx *bsx;
242 struct de *de;
243 u_int8_t *img;
244 const char *fname, *dtype, *bname;
245 ssize_t n;
246 time_t now;
247 u_int fat, bss, rds, cls, dir, lsn, x, x1, x2;
248 int ch, fd, fd1;
249
250 while ((ch = getopt(argc, argv, opts)) != -1)
251 switch (ch) {
252 case 'N':
253 opt_N = 1;
254 break;
255 case 'B':
256 opt_B = optarg;
257 break;
258 case 'F':
259 if (strcmp(optarg, "12") &&
260 strcmp(optarg, "16") &&
261 strcmp(optarg, "32"))
262 errx(1, "%s: bad FAT type", optarg);
263 opt_F = atoi(optarg);
264 break;
265 case 'I':
266 opt_I = argto4(optarg, 0, "volume ID");
267 Iflag = 1;
268 break;
269 case 'L':
270 if (!oklabel(optarg))
271 errx(1, "%s: bad volume label", optarg);
272 opt_L = optarg;
273 break;
274 case 'O':
275 if (strlen(optarg) > 8)
276 errx(1, "%s: bad OEM string", optarg);
277 opt_O = optarg;
278 break;
279 case 'S':
280 opt_S = argto2(optarg, 1, "bytes/sector");
281 break;
282 case 'a':
283 opt_a = argto4(optarg, 1, "sectors/FAT");
284 break;
285 case 'b':
286 opt_b = argtox(optarg, 1, "block size");
287 opt_c = 0;
288 break;
289 case 'c':
290 opt_c = argto1(optarg, 1, "sectors/cluster");
291 opt_b = 0;
292 break;
293 case 'e':
294 opt_e = argto2(optarg, 1, "directory entries");
295 break;
296 case 'f':
297 opt_f = optarg;
298 break;
299 case 'h':
300 opt_h = argto2(optarg, 1, "drive heads");
301 break;
302 case 'i':
303 opt_i = argto2(optarg, 1, "info sector");
304 break;
305 case 'k':
306 opt_k = argto2(optarg, 1, "backup sector");
307 break;
308 case 'm':
309 opt_m = argto1(optarg, 0, "media descriptor");
310 mflag = 1;
311 break;
312 case 'n':
313 opt_n = argto1(optarg, 1, "number of FATs");
314 break;
315 case 'o':
316 opt_o = argto4(optarg, 0, "hidden sectors");
317 oflag = 1;
318 break;
319 case 'r':
320 opt_r = argto2(optarg, 1, "reserved sectors");
321 break;
322 case 's':
323 opt_s = argto4(optarg, 1, "file system size");
324 break;
325 case 'u':
326 opt_u = argto2(optarg, 1, "sectors/track");
327 break;
328 default:
329 usage();
330 }
331 argc -= optind;
332 argv += optind;
333 if (argc < 1 || argc > 2)
334 usage();
335 fname = *argv++;
336 if (!strchr(fname, '/')) {
337 snprintf(buf, sizeof(buf), "%sr%s", _PATH_DEV, fname);
338 if (stat(buf, &sb))
339 snprintf(buf, sizeof(buf), "%s%s", _PATH_DEV, fname);
340 if (!(fname = strdup(buf)))
341 err(1, NULL);
342 }
343 dtype = *argv;
344 if ((fd = open(fname, opt_N ? O_RDONLY : O_RDWR)) == -1 ||
345 fstat(fd, &sb))
346 err(1, "%s", fname);
347 if (!opt_N)
348 check_mounted(fname, sb.st_mode);
349 if (!S_ISCHR(sb.st_mode))
350 warnx("warning: %s is not a character device", fname);
351 memset(&bpb, 0, sizeof(bpb));
352 if (opt_f) {
353 getstdfmt(opt_f, &bpb);
354 bpb.bsec = bpb.sec;
355 bpb.sec = 0;
356 bpb.bspf = bpb.spf;
357 bpb.spf = 0;
358 }
359 if (opt_h)
360 bpb.hds = opt_h;
361 if (opt_u)
362 bpb.spt = opt_u;
363 if (opt_S)
364 bpb.bps = opt_S;
365 if (opt_s)
366 bpb.bsec = opt_s;
367 if (oflag)
368 bpb.hid = opt_o;
369 if (!(opt_f || (opt_h && opt_u && opt_S && opt_s && oflag)))
370 getdiskinfo(fd, fname, dtype, oflag, &bpb);
371 if (!powerof2(bpb.bps))
372 errx(1, "bytes/sector (%u) is not a power of 2", bpb.bps);
373 if (bpb.bps < MINBPS)
374 errx(1, "bytes/sector (%u) is too small; minimum is %u",
375 bpb.bps, MINBPS);
| 31#endif /* not lint */
32
33#include <sys/param.h>
34#include <sys/stat.h>
35#include <sys/diskslice.h>
36#include <sys/disklabel.h>
37#include <sys/mount.h>
38
39#include <ctype.h>
40#include <err.h>
41#include <errno.h>
42#include <fcntl.h>
43#include <paths.h>
44#include <stdio.h>
45#include <stdlib.h>
46#include <string.h>
47#include <unistd.h>
48
49#define MAXU16 0xffff /* maximum unsigned 16-bit quantity */
50#define BPN 4 /* bits per nibble */
51#define NPB 2 /* nibbles per byte */
52
53#define DOSMAGIC 0xaa55 /* DOS magic number */
54#define MINBPS 128 /* minimum bytes per sector */
55#define MAXSPC 128 /* maximum sectors per cluster */
56#define MAXNFT 16 /* maximum number of FATs */
57#define DEFBLK 4096 /* default block size */
58#define DEFBLK16 2048 /* default block size FAT16 */
59#define DEFRDE 512 /* default root directory entries */
60#define RESFTE 2 /* reserved FAT entries */
61#define MINCLS12 1 /* minimum FAT12 clusters */
62#define MINCLS16 0x1000 /* minimum FAT16 clusters */
63#define MINCLS32 2 /* minimum FAT32 clusters */
64#define MAXCLS12 0xfed /* maximum FAT12 clusters */
65#define MAXCLS16 0xfff5 /* maximum FAT16 clusters */
66#define MAXCLS32 0xffffff5 /* maximum FAT32 clusters */
67
68#define mincls(fat) ((fat) == 12 ? MINCLS12 : \
69 (fat) == 16 ? MINCLS16 : \
70 MINCLS32)
71
72#define maxcls(fat) ((fat) == 12 ? MAXCLS12 : \
73 (fat) == 16 ? MAXCLS16 : \
74 MAXCLS32)
75
76#define mk1(p, x) \
77 (p) = (u_int8_t)(x)
78
79#define mk2(p, x) \
80 (p)[0] = (u_int8_t)(x), \
81 (p)[1] = (u_int8_t)((x) >> 010)
82
83#define mk4(p, x) \
84 (p)[0] = (u_int8_t)(x), \
85 (p)[1] = (u_int8_t)((x) >> 010), \
86 (p)[2] = (u_int8_t)((x) >> 020), \
87 (p)[3] = (u_int8_t)((x) >> 030)
88
89#define argto1(arg, lo, msg) argtou(arg, lo, 0xff, msg)
90#define argto2(arg, lo, msg) argtou(arg, lo, 0xffff, msg)
91#define argto4(arg, lo, msg) argtou(arg, lo, 0xffffffff, msg)
92#define argtox(arg, lo, msg) argtou(arg, lo, UINT_MAX, msg)
93
94struct bs {
95 u_int8_t jmp[3]; /* bootstrap entry point */
96 u_int8_t oem[8]; /* OEM name and version */
97};
98
99struct bsbpb {
100 u_int8_t bps[2]; /* bytes per sector */
101 u_int8_t spc; /* sectors per cluster */
102 u_int8_t res[2]; /* reserved sectors */
103 u_int8_t nft; /* number of FATs */
104 u_int8_t rde[2]; /* root directory entries */
105 u_int8_t sec[2]; /* total sectors */
106 u_int8_t mid; /* media descriptor */
107 u_int8_t spf[2]; /* sectors per FAT */
108 u_int8_t spt[2]; /* sectors per track */
109 u_int8_t hds[2]; /* drive heads */
110 u_int8_t hid[4]; /* hidden sectors */
111 u_int8_t bsec[4]; /* big total sectors */
112};
113
114struct bsxbpb {
115 u_int8_t bspf[4]; /* big sectors per FAT */
116 u_int8_t xflg[2]; /* FAT control flags */
117 u_int8_t vers[2]; /* file system version */
118 u_int8_t rdcl[4]; /* root directory start cluster */
119 u_int8_t infs[2]; /* file system info sector */
120 u_int8_t bkbs[2]; /* backup boot sector */
121 u_int8_t rsvd[12]; /* reserved */
122};
123
124struct bsx {
125 u_int8_t drv; /* drive number */
126 u_int8_t rsvd; /* reserved */
127 u_int8_t sig; /* extended boot signature */
128 u_int8_t volid[4]; /* volume ID number */
129 u_int8_t label[11]; /* volume label */
130 u_int8_t type[8]; /* file system type */
131};
132
133struct de {
134 u_int8_t namext[11]; /* name and extension */
135 u_int8_t attr; /* attributes */
136 u_int8_t rsvd[10]; /* reserved */
137 u_int8_t time[2]; /* creation time */
138 u_int8_t date[2]; /* creation date */
139 u_int8_t clus[2]; /* starting cluster */
140 u_int8_t size[4]; /* size */
141};
142
143struct bpb {
144 u_int bps; /* bytes per sector */
145 u_int spc; /* sectors per cluster */
146 u_int res; /* reserved sectors */
147 u_int nft; /* number of FATs */
148 u_int rde; /* root directory entries */
149 u_int sec; /* total sectors */
150 u_int mid; /* media descriptor */
151 u_int spf; /* sectors per FAT */
152 u_int spt; /* sectors per track */
153 u_int hds; /* drive heads */
154 u_int hid; /* hidden sectors */
155 u_int bsec; /* big total sectors */
156 u_int bspf; /* big sectors per FAT */
157 u_int rdcl; /* root directory start cluster */
158 u_int infs; /* file system info sector */
159 u_int bkbs; /* backup boot sector */
160};
161
162static struct {
163 const char *name;
164 struct bpb bpb;
165} stdfmt[] = {
166 {"160", {512, 1, 1, 2, 64, 320, 0xfe, 1, 8, 1}},
167 {"180", {512, 1, 1, 2, 64, 360, 0xfc, 2, 9, 1}},
168 {"320", {512, 2, 1, 2, 112, 640, 0xff, 1, 8, 2}},
169 {"360", {512, 2, 1, 2, 112, 720, 0xfd, 2, 9, 2}},
170 {"720", {512, 2, 1, 2, 112, 1440, 0xf9, 3, 9, 2}},
171 {"1200", {512, 1, 1, 2, 224, 2400, 0xf9, 7, 15, 2}},
172 {"1440", {512, 1, 1, 2, 224, 2880, 0xf0, 9, 18, 2}},
173 {"2880", {512, 2, 1, 2, 240, 5760, 0xf0, 9, 36, 2}}
174};
175
176static u_int8_t bootcode[] = {
177 0xfa, /* cli */
178 0x31, 0xc0, /* xor ax,ax */
179 0x8e, 0xd0, /* mov ss,ax */
180 0xbc, 0x00, 0x7c, /* mov sp,7c00h */
181 0xfb, /* sti */
182 0x8e, 0xd8, /* mov ds,ax */
183 0xe8, 0x00, 0x00, /* call $ + 3 */
184 0x5e, /* pop si */
185 0x83, 0xc6, 0x19, /* add si,+19h */
186 0xbb, 0x07, 0x00, /* mov bx,0007h */
187 0xfc, /* cld */
188 0xac, /* lodsb */
189 0x84, 0xc0, /* test al,al */
190 0x74, 0x06, /* jz $ + 8 */
191 0xb4, 0x0e, /* mov ah,0eh */
192 0xcd, 0x10, /* int 10h */
193 0xeb, 0xf5, /* jmp $ - 9 */
194 0x30, 0xe4, /* xor ah,ah */
195 0xcd, 0x16, /* int 16h */
196 0xcd, 0x19, /* int 19h */
197 0x0d, 0x0a,
198 'N', 'o', 'n', '-', 's', 'y', 's', 't',
199 'e', 'm', ' ', 'd', 'i', 's', 'k',
200 0x0d, 0x0a,
201 'P', 'r', 'e', 's', 's', ' ', 'a', 'n',
202 'y', ' ', 'k', 'e', 'y', ' ', 't', 'o',
203 ' ', 'r', 'e', 'b', 'o', 'o', 't',
204 0x0d, 0x0a,
205 0
206};
207
208static void check_mounted(const char *, mode_t);
209static void getstdfmt(const char *, struct bpb *);
210static void getdiskinfo(int, const char *, const char *, int,
211 struct bpb *);
212static void print_bpb(struct bpb *);
213static u_int ckgeom(const char *, u_int, const char *);
214static u_int argtou(const char *, u_int, u_int, const char *);
215static int oklabel(const char *);
216static void mklabel(u_int8_t *, const char *);
217static void setstr(u_int8_t *, const char *, size_t);
218static void usage(void);
219
220/*
221 * Construct a FAT12, FAT16, or FAT32 file system.
222 */
223int
224main(int argc, char *argv[])
225{
226 static char opts[] = "NB:F:I:L:O:S:a:b:c:e:f:h:i:k:m:n:o:r:s:u:";
227 static const char *opt_B, *opt_L, *opt_O, *opt_f;
228 static u_int opt_F, opt_I, opt_S, opt_a, opt_b, opt_c, opt_e;
229 static u_int opt_h, opt_i, opt_k, opt_m, opt_n, opt_o, opt_r;
230 static u_int opt_s, opt_u;
231 static int opt_N;
232 static int Iflag, mflag, oflag;
233 char buf[MAXPATHLEN];
234 struct stat sb;
235 struct timeval tv;
236 struct bpb bpb;
237 struct tm *tm;
238 struct bs *bs;
239 struct bsbpb *bsbpb;
240 struct bsxbpb *bsxbpb;
241 struct bsx *bsx;
242 struct de *de;
243 u_int8_t *img;
244 const char *fname, *dtype, *bname;
245 ssize_t n;
246 time_t now;
247 u_int fat, bss, rds, cls, dir, lsn, x, x1, x2;
248 int ch, fd, fd1;
249
250 while ((ch = getopt(argc, argv, opts)) != -1)
251 switch (ch) {
252 case 'N':
253 opt_N = 1;
254 break;
255 case 'B':
256 opt_B = optarg;
257 break;
258 case 'F':
259 if (strcmp(optarg, "12") &&
260 strcmp(optarg, "16") &&
261 strcmp(optarg, "32"))
262 errx(1, "%s: bad FAT type", optarg);
263 opt_F = atoi(optarg);
264 break;
265 case 'I':
266 opt_I = argto4(optarg, 0, "volume ID");
267 Iflag = 1;
268 break;
269 case 'L':
270 if (!oklabel(optarg))
271 errx(1, "%s: bad volume label", optarg);
272 opt_L = optarg;
273 break;
274 case 'O':
275 if (strlen(optarg) > 8)
276 errx(1, "%s: bad OEM string", optarg);
277 opt_O = optarg;
278 break;
279 case 'S':
280 opt_S = argto2(optarg, 1, "bytes/sector");
281 break;
282 case 'a':
283 opt_a = argto4(optarg, 1, "sectors/FAT");
284 break;
285 case 'b':
286 opt_b = argtox(optarg, 1, "block size");
287 opt_c = 0;
288 break;
289 case 'c':
290 opt_c = argto1(optarg, 1, "sectors/cluster");
291 opt_b = 0;
292 break;
293 case 'e':
294 opt_e = argto2(optarg, 1, "directory entries");
295 break;
296 case 'f':
297 opt_f = optarg;
298 break;
299 case 'h':
300 opt_h = argto2(optarg, 1, "drive heads");
301 break;
302 case 'i':
303 opt_i = argto2(optarg, 1, "info sector");
304 break;
305 case 'k':
306 opt_k = argto2(optarg, 1, "backup sector");
307 break;
308 case 'm':
309 opt_m = argto1(optarg, 0, "media descriptor");
310 mflag = 1;
311 break;
312 case 'n':
313 opt_n = argto1(optarg, 1, "number of FATs");
314 break;
315 case 'o':
316 opt_o = argto4(optarg, 0, "hidden sectors");
317 oflag = 1;
318 break;
319 case 'r':
320 opt_r = argto2(optarg, 1, "reserved sectors");
321 break;
322 case 's':
323 opt_s = argto4(optarg, 1, "file system size");
324 break;
325 case 'u':
326 opt_u = argto2(optarg, 1, "sectors/track");
327 break;
328 default:
329 usage();
330 }
331 argc -= optind;
332 argv += optind;
333 if (argc < 1 || argc > 2)
334 usage();
335 fname = *argv++;
336 if (!strchr(fname, '/')) {
337 snprintf(buf, sizeof(buf), "%sr%s", _PATH_DEV, fname);
338 if (stat(buf, &sb))
339 snprintf(buf, sizeof(buf), "%s%s", _PATH_DEV, fname);
340 if (!(fname = strdup(buf)))
341 err(1, NULL);
342 }
343 dtype = *argv;
344 if ((fd = open(fname, opt_N ? O_RDONLY : O_RDWR)) == -1 ||
345 fstat(fd, &sb))
346 err(1, "%s", fname);
347 if (!opt_N)
348 check_mounted(fname, sb.st_mode);
349 if (!S_ISCHR(sb.st_mode))
350 warnx("warning: %s is not a character device", fname);
351 memset(&bpb, 0, sizeof(bpb));
352 if (opt_f) {
353 getstdfmt(opt_f, &bpb);
354 bpb.bsec = bpb.sec;
355 bpb.sec = 0;
356 bpb.bspf = bpb.spf;
357 bpb.spf = 0;
358 }
359 if (opt_h)
360 bpb.hds = opt_h;
361 if (opt_u)
362 bpb.spt = opt_u;
363 if (opt_S)
364 bpb.bps = opt_S;
365 if (opt_s)
366 bpb.bsec = opt_s;
367 if (oflag)
368 bpb.hid = opt_o;
369 if (!(opt_f || (opt_h && opt_u && opt_S && opt_s && oflag)))
370 getdiskinfo(fd, fname, dtype, oflag, &bpb);
371 if (!powerof2(bpb.bps))
372 errx(1, "bytes/sector (%u) is not a power of 2", bpb.bps);
373 if (bpb.bps < MINBPS)
374 errx(1, "bytes/sector (%u) is too small; minimum is %u",
375 bpb.bps, MINBPS);
|
462 x = bss;
463 if (fat == 32) {
464 if (!bpb.infs) {
465 if (x == MAXU16 || x == bpb.bkbs)
466 errx(1, "no room for info sector");
467 bpb.infs = x;
468 }
469 if (bpb.infs != MAXU16 && x <= bpb.infs)
470 x = bpb.infs + 1;
471 if (!bpb.bkbs) {
472 if (x == MAXU16)
473 errx(1, "no room for backup sector");
474 bpb.bkbs = x;
475 } else if (bpb.bkbs != MAXU16 && bpb.bkbs == bpb.infs)
476 errx(1, "backup sector would overwrite info sector");
477 if (bpb.bkbs != MAXU16 && x <= bpb.bkbs)
478 x = bpb.bkbs + 1;
479 }
480 if (!bpb.res)
481 bpb.res = fat == 32 ? MAX(x, MAX(16384 / bpb.bps, 4)) : x;
482 else if (bpb.res < x)
483 errx(1, "too few reserved sectors");
484 if (fat != 32 && !bpb.rde)
485 bpb.rde = DEFRDE;
486 rds = howmany(bpb.rde, bpb.bps / sizeof(struct de));
487 if (!bpb.spc)
488 for (bpb.spc = howmany(fat == 16 ? DEFBLK16 : DEFBLK, bpb.bps);
489 bpb.spc < MAXSPC &&
490 bpb.res +
491 howmany((RESFTE + maxcls(fat)) * (fat / BPN),
492 bpb.bps * NPB) * bpb.nft +
493 rds +
494 (u_int64_t)(maxcls(fat) + 1) * bpb.spc <= bpb.bsec;
495 bpb.spc <<= 1);
496 if (fat != 32 && bpb.bspf > MAXU16)
497 errx(1, "too many sectors/FAT for FAT12/16");
498 x1 = bpb.res + rds;
499 x = bpb.bspf ? bpb.bspf : 1;
500 if (x1 + (u_int64_t)x * bpb.nft > bpb.bsec)
501 errx(1, "meta data exceeds file system size");
502 x1 += x * bpb.nft;
503 x = (u_int64_t)(bpb.bsec - x1) * bpb.bps * NPB /
504 (bpb.spc * bpb.bps * NPB + fat / BPN * bpb.nft);
505 x2 = howmany((RESFTE + MIN(x, maxcls(fat))) * (fat / BPN),
506 bpb.bps * NPB);
507 if (!bpb.bspf) {
508 bpb.bspf = x2;
509 x1 += (bpb.bspf - 1) * bpb.nft;
510 }
511 cls = (bpb.bsec - x1) / bpb.spc;
512 x = (u_int64_t)bpb.bspf * bpb.bps * NPB / (fat / BPN) - RESFTE;
513 if (cls > x)
514 cls = x;
515 if (bpb.bspf < x2)
516 warnx("warning: sectors/FAT limits file system to %u clusters",
517 cls);
518 if (cls < mincls(fat))
519 errx(1, "too few clusters for FAT%u", fat);
520 if (cls > maxcls(fat)) {
521 cls = maxcls(fat);
522 bpb.bsec = x1 + (cls + 1) * bpb.spc - 1;
523 warnx("warning: FAT type limits file system to %u sectors",
524 bpb.bsec);
525 }
526 printf("%s: %u sector%s in %u FAT%u cluster%s "
527 "(%u bytes/cluster)\n", fname, cls * bpb.spc,
528 cls * bpb.spc == 1 ? "" : "s", cls, fat,
529 cls == 1 ? "" : "s", bpb.bps * bpb.spc);
530 if (!bpb.mid)
531 bpb.mid = !bpb.hid ? 0xf0 : 0xf8;
532 if (fat == 32)
533 bpb.rdcl = RESFTE;
534 if (bpb.hid + bpb.bsec <= MAXU16) {
535 bpb.sec = bpb.bsec;
536 bpb.bsec = 0;
537 }
538 if (fat != 32) {
539 bpb.spf = bpb.bspf;
540 bpb.bspf = 0;
541 }
542 print_bpb(&bpb);
543 if (!opt_N) {
544 gettimeofday(&tv, NULL);
545 now = tv.tv_sec;
546 tm = localtime(&now);
547 if (!(img = malloc(bpb.bps)))
548 err(1, NULL);
549 dir = bpb.res + (bpb.spf ? bpb.spf : bpb.bspf) * bpb.nft;
550 for (lsn = 0; lsn < dir + (fat == 32 ? bpb.spc : rds); lsn++) {
551 x = lsn;
552 if (opt_B &&
553 fat == 32 && bpb.bkbs != MAXU16 &&
554 bss <= bpb.bkbs && x >= bpb.bkbs) {
555 x -= bpb.bkbs;
556 if (!x && lseek(fd1, 0, SEEK_SET))
557 err(1, "%s", bname);
558 }
559 if (opt_B && x < bss) {
560 if ((n = read(fd1, img, bpb.bps)) == -1)
561 err(1, "%s", bname);
562 if (n != bpb.bps)
563 errx(1, "%s: can't read sector %u", bname, x);
564 } else
565 memset(img, 0, bpb.bps);
566 if (!lsn ||
567 (fat == 32 && bpb.bkbs != MAXU16 && lsn == bpb.bkbs)) {
568 x1 = sizeof(struct bs);
569 bsbpb = (struct bsbpb *)(img + x1);
570 mk2(bsbpb->bps, bpb.bps);
571 mk1(bsbpb->spc, bpb.spc);
572 mk2(bsbpb->res, bpb.res);
573 mk1(bsbpb->nft, bpb.nft);
574 mk2(bsbpb->rde, bpb.rde);
575 mk2(bsbpb->sec, bpb.sec);
576 mk1(bsbpb->mid, bpb.mid);
577 mk2(bsbpb->spf, bpb.spf);
578 mk2(bsbpb->spt, bpb.spt);
579 mk2(bsbpb->hds, bpb.hds);
580 mk4(bsbpb->hid, bpb.hid);
581 mk4(bsbpb->bsec, bpb.bsec);
582 x1 += sizeof(struct bsbpb);
583 if (fat == 32) {
584 bsxbpb = (struct bsxbpb *)(img + x1);
585 mk4(bsxbpb->bspf, bpb.bspf);
586 mk2(bsxbpb->xflg, 0);
587 mk2(bsxbpb->vers, 0);
588 mk4(bsxbpb->rdcl, bpb.rdcl);
589 mk2(bsxbpb->infs, bpb.infs);
590 mk2(bsxbpb->bkbs, bpb.bkbs);
591 x1 += sizeof(struct bsxbpb);
592 }
593 bsx = (struct bsx *)(img + x1);
594 mk1(bsx->sig, 0x29);
595 if (Iflag)
596 x = opt_I;
597 else
598 x = (((u_int)(1 + tm->tm_mon) << 8 |
599 (u_int)tm->tm_mday) +
600 ((u_int)tm->tm_sec << 8 |
601 (u_int)(tv.tv_usec / 10))) << 16 |
602 ((u_int)(1900 + tm->tm_year) +
603 ((u_int)tm->tm_hour << 8 |
604 (u_int)tm->tm_min));
605 mk4(bsx->volid, x);
606 mklabel(bsx->label, opt_L ? opt_L : "NO NAME");
607 sprintf(buf, "FAT%u", fat);
608 setstr(bsx->type, buf, sizeof(bsx->type));
609 if (!opt_B) {
610 x1 += sizeof(struct bsx);
611 bs = (struct bs *)img;
612 mk1(bs->jmp[0], 0xeb);
613 mk1(bs->jmp[1], x1 - 2);
614 mk1(bs->jmp[2], 0x90);
615 setstr(bs->oem, opt_O ? opt_O : "BSD 4.4",
616 sizeof(bs->oem));
617 memcpy(img + x1, bootcode, sizeof(bootcode));
618 mk2(img + bpb.bps - 2, DOSMAGIC);
619 }
620 } else if (fat == 32 && bpb.infs != MAXU16 &&
621 (lsn == bpb.infs ||
622 (bpb.bkbs != MAXU16 &&
623 lsn == bpb.bkbs + bpb.infs))) {
624 mk4(img, 0x41615252);
625 mk4(img + bpb.bps - 28, 0x61417272);
626 mk4(img + bpb.bps - 24, 0xffffffff);
627 mk4(img + bpb.bps - 20, bpb.rdcl);
628 mk2(img + bpb.bps - 2, DOSMAGIC);
629 } else if (lsn >= bpb.res && lsn < dir &&
630 !((lsn - bpb.res) %
631 (bpb.spf ? bpb.spf : bpb.bspf))) {
632 mk1(img[0], bpb.mid);
633 for (x = 1; x < fat * (fat == 32 ? 3 : 2) / 8; x++)
634 mk1(img[x], fat == 32 && x % 4 == 3 ? 0x0f : 0xff);
635 } else if (lsn == dir && opt_L) {
636 de = (struct de *)img;
637 mklabel(de->namext, opt_L);
638 mk1(de->attr, 050);
639 x = (u_int)tm->tm_hour << 11 |
640 (u_int)tm->tm_min << 5 |
641 (u_int)tm->tm_sec >> 1;
642 mk2(de->time, x);
643 x = (u_int)(tm->tm_year - 80) << 9 |
644 (u_int)(tm->tm_mon + 1) << 5 |
645 (u_int)tm->tm_mday;
646 mk2(de->date, x);
647 }
648 if ((n = write(fd, img, bpb.bps)) == -1)
649 err(1, "%s", fname);
650 if (n != bpb.bps)
651 errx(1, "%s: can't write sector %u", fname, lsn);
652 }
653 }
654 return 0;
655}
656
657/*
658 * Exit with error if file system is mounted.
659 */
660static void
661check_mounted(const char *fname, mode_t mode)
662{
663 struct statfs *mp;
664 const char *s1, *s2;
665 size_t len;
666 int n, r;
667
668 if (!(n = getmntinfo(&mp, MNT_NOWAIT)))
669 err(1, "getmntinfo");
670 len = strlen(_PATH_DEV);
671 s1 = fname;
672 if (!strncmp(s1, _PATH_DEV, len))
673 s1 += len;
674 r = S_ISCHR(mode) && s1 != fname && *s1 == 'r';
675 for (; n--; mp++) {
676 s2 = mp->f_mntfromname;
677 if (!strncmp(s2, _PATH_DEV, len))
678 s2 += len;
679 if ((r && s2 != mp->f_mntfromname && !strcmp(s1 + 1, s2)) ||
680 !strcmp(s1, s2))
681 errx(1, "%s is mounted on %s", fname, mp->f_mntonname);
682 }
683}
684
685/*
686 * Get a standard format.
687 */
688static void
689getstdfmt(const char *fmt, struct bpb *bpb)
690{
691 u_int x, i;
692
693 x = sizeof(stdfmt) / sizeof(stdfmt[0]);
694 for (i = 0; i < x && strcmp(fmt, stdfmt[i].name); i++);
695 if (i == x)
696 errx(1, "%s: unknown standard format", fmt);
697 *bpb = stdfmt[i].bpb;
698}
699
700/*
701 * Get disk slice, partition, and geometry information.
702 */
703static void
704getdiskinfo(int fd, const char *fname, const char *dtype, int oflag,
705 struct bpb *bpb)
706{
707 struct diskslices ds;
708 struct disklabel dl, *lp;
709 const char *s1, *s2;
710 char *s;
711 int slice, part, fd1, i, e;
712
713 slice = part = -1;
714 s1 = fname;
715 if ((s2 = strrchr(s1, '/')))
716 s1 = s2 + 1;
717 for (s2 = s1; *s2 && !isdigit(*s2); s2++);
718 if (!*s2 || s2 == s1)
719 s2 = NULL;
720 else
721 while (isdigit(*++s2));
722 s1 = s2;
723 if (s2 && *s2 == 's') {
724 slice = strtol(s2 + 1, &s, 10);
725 if (slice < 1 || slice > MAX_SLICES - BASE_SLICE)
726 s2 = NULL;
727 else {
728 slice = BASE_SLICE + slice - 1;
729 s2 = s;
730 }
731 }
732 if (s2 && *s2 >= 'a' && *s2 <= 'a' + MAXPARTITIONS - 1) {
733 if (slice == -1)
734 slice = COMPATIBILITY_SLICE;
735 part = *s2++ - 'a';
736 }
737 if (!s2 || (*s2 && *s2 != '.'))
738 errx(1, "%s: can't figure out partition info", fname);
739 if (slice != -1 && (!oflag || (!bpb->bsec && part == -1))) {
740 if (ioctl(fd, DIOCGSLICEINFO, &ds) == -1) {
741 warn("ioctl (GSLICEINFO)");
742 errx(1, "%s: can't get slice info", fname);
743 }
744 if (slice >= ds.dss_nslices || !ds.dss_slices[slice].ds_size)
745 errx(1, "%s: slice is unavailable", fname);
746 if (!oflag)
747 bpb->hid = ds.dss_slices[slice].ds_offset;
748 if (!bpb->bsec && part == -1)
749 bpb->bsec = ds.dss_slices[slice].ds_size;
750 }
751 if (((slice == -1 || part != -1) &&
752 ((!oflag && part != -1) || !bpb->bsec)) ||
753 !bpb->bps || !bpb->spt || !bpb->hds) {
754 lp = &dl;
755 i = ioctl(fd, DIOCGDINFO, lp);
756 if (i == -1 && slice != -1 && part == -1) {
757 e = errno;
758 if (!(s = strdup(fname)))
759 err(1, NULL);
760 s[s1 - fname] = 0;
761 if ((fd1 = open(s, O_RDONLY)) != -1) {
762 i = ioctl(fd1, DIOCGDINFO, lp);
763 close(fd1);
764 }
765 free(s);
766 errno = e;
767 }
| 464 x = bss;
465 if (fat == 32) {
466 if (!bpb.infs) {
467 if (x == MAXU16 || x == bpb.bkbs)
468 errx(1, "no room for info sector");
469 bpb.infs = x;
470 }
471 if (bpb.infs != MAXU16 && x <= bpb.infs)
472 x = bpb.infs + 1;
473 if (!bpb.bkbs) {
474 if (x == MAXU16)
475 errx(1, "no room for backup sector");
476 bpb.bkbs = x;
477 } else if (bpb.bkbs != MAXU16 && bpb.bkbs == bpb.infs)
478 errx(1, "backup sector would overwrite info sector");
479 if (bpb.bkbs != MAXU16 && x <= bpb.bkbs)
480 x = bpb.bkbs + 1;
481 }
482 if (!bpb.res)
483 bpb.res = fat == 32 ? MAX(x, MAX(16384 / bpb.bps, 4)) : x;
484 else if (bpb.res < x)
485 errx(1, "too few reserved sectors");
486 if (fat != 32 && !bpb.rde)
487 bpb.rde = DEFRDE;
488 rds = howmany(bpb.rde, bpb.bps / sizeof(struct de));
489 if (!bpb.spc)
490 for (bpb.spc = howmany(fat == 16 ? DEFBLK16 : DEFBLK, bpb.bps);
491 bpb.spc < MAXSPC &&
492 bpb.res +
493 howmany((RESFTE + maxcls(fat)) * (fat / BPN),
494 bpb.bps * NPB) * bpb.nft +
495 rds +
496 (u_int64_t)(maxcls(fat) + 1) * bpb.spc <= bpb.bsec;
497 bpb.spc <<= 1);
498 if (fat != 32 && bpb.bspf > MAXU16)
499 errx(1, "too many sectors/FAT for FAT12/16");
500 x1 = bpb.res + rds;
501 x = bpb.bspf ? bpb.bspf : 1;
502 if (x1 + (u_int64_t)x * bpb.nft > bpb.bsec)
503 errx(1, "meta data exceeds file system size");
504 x1 += x * bpb.nft;
505 x = (u_int64_t)(bpb.bsec - x1) * bpb.bps * NPB /
506 (bpb.spc * bpb.bps * NPB + fat / BPN * bpb.nft);
507 x2 = howmany((RESFTE + MIN(x, maxcls(fat))) * (fat / BPN),
508 bpb.bps * NPB);
509 if (!bpb.bspf) {
510 bpb.bspf = x2;
511 x1 += (bpb.bspf - 1) * bpb.nft;
512 }
513 cls = (bpb.bsec - x1) / bpb.spc;
514 x = (u_int64_t)bpb.bspf * bpb.bps * NPB / (fat / BPN) - RESFTE;
515 if (cls > x)
516 cls = x;
517 if (bpb.bspf < x2)
518 warnx("warning: sectors/FAT limits file system to %u clusters",
519 cls);
520 if (cls < mincls(fat))
521 errx(1, "too few clusters for FAT%u", fat);
522 if (cls > maxcls(fat)) {
523 cls = maxcls(fat);
524 bpb.bsec = x1 + (cls + 1) * bpb.spc - 1;
525 warnx("warning: FAT type limits file system to %u sectors",
526 bpb.bsec);
527 }
528 printf("%s: %u sector%s in %u FAT%u cluster%s "
529 "(%u bytes/cluster)\n", fname, cls * bpb.spc,
530 cls * bpb.spc == 1 ? "" : "s", cls, fat,
531 cls == 1 ? "" : "s", bpb.bps * bpb.spc);
532 if (!bpb.mid)
533 bpb.mid = !bpb.hid ? 0xf0 : 0xf8;
534 if (fat == 32)
535 bpb.rdcl = RESFTE;
536 if (bpb.hid + bpb.bsec <= MAXU16) {
537 bpb.sec = bpb.bsec;
538 bpb.bsec = 0;
539 }
540 if (fat != 32) {
541 bpb.spf = bpb.bspf;
542 bpb.bspf = 0;
543 }
544 print_bpb(&bpb);
545 if (!opt_N) {
546 gettimeofday(&tv, NULL);
547 now = tv.tv_sec;
548 tm = localtime(&now);
549 if (!(img = malloc(bpb.bps)))
550 err(1, NULL);
551 dir = bpb.res + (bpb.spf ? bpb.spf : bpb.bspf) * bpb.nft;
552 for (lsn = 0; lsn < dir + (fat == 32 ? bpb.spc : rds); lsn++) {
553 x = lsn;
554 if (opt_B &&
555 fat == 32 && bpb.bkbs != MAXU16 &&
556 bss <= bpb.bkbs && x >= bpb.bkbs) {
557 x -= bpb.bkbs;
558 if (!x && lseek(fd1, 0, SEEK_SET))
559 err(1, "%s", bname);
560 }
561 if (opt_B && x < bss) {
562 if ((n = read(fd1, img, bpb.bps)) == -1)
563 err(1, "%s", bname);
564 if (n != bpb.bps)
565 errx(1, "%s: can't read sector %u", bname, x);
566 } else
567 memset(img, 0, bpb.bps);
568 if (!lsn ||
569 (fat == 32 && bpb.bkbs != MAXU16 && lsn == bpb.bkbs)) {
570 x1 = sizeof(struct bs);
571 bsbpb = (struct bsbpb *)(img + x1);
572 mk2(bsbpb->bps, bpb.bps);
573 mk1(bsbpb->spc, bpb.spc);
574 mk2(bsbpb->res, bpb.res);
575 mk1(bsbpb->nft, bpb.nft);
576 mk2(bsbpb->rde, bpb.rde);
577 mk2(bsbpb->sec, bpb.sec);
578 mk1(bsbpb->mid, bpb.mid);
579 mk2(bsbpb->spf, bpb.spf);
580 mk2(bsbpb->spt, bpb.spt);
581 mk2(bsbpb->hds, bpb.hds);
582 mk4(bsbpb->hid, bpb.hid);
583 mk4(bsbpb->bsec, bpb.bsec);
584 x1 += sizeof(struct bsbpb);
585 if (fat == 32) {
586 bsxbpb = (struct bsxbpb *)(img + x1);
587 mk4(bsxbpb->bspf, bpb.bspf);
588 mk2(bsxbpb->xflg, 0);
589 mk2(bsxbpb->vers, 0);
590 mk4(bsxbpb->rdcl, bpb.rdcl);
591 mk2(bsxbpb->infs, bpb.infs);
592 mk2(bsxbpb->bkbs, bpb.bkbs);
593 x1 += sizeof(struct bsxbpb);
594 }
595 bsx = (struct bsx *)(img + x1);
596 mk1(bsx->sig, 0x29);
597 if (Iflag)
598 x = opt_I;
599 else
600 x = (((u_int)(1 + tm->tm_mon) << 8 |
601 (u_int)tm->tm_mday) +
602 ((u_int)tm->tm_sec << 8 |
603 (u_int)(tv.tv_usec / 10))) << 16 |
604 ((u_int)(1900 + tm->tm_year) +
605 ((u_int)tm->tm_hour << 8 |
606 (u_int)tm->tm_min));
607 mk4(bsx->volid, x);
608 mklabel(bsx->label, opt_L ? opt_L : "NO NAME");
609 sprintf(buf, "FAT%u", fat);
610 setstr(bsx->type, buf, sizeof(bsx->type));
611 if (!opt_B) {
612 x1 += sizeof(struct bsx);
613 bs = (struct bs *)img;
614 mk1(bs->jmp[0], 0xeb);
615 mk1(bs->jmp[1], x1 - 2);
616 mk1(bs->jmp[2], 0x90);
617 setstr(bs->oem, opt_O ? opt_O : "BSD 4.4",
618 sizeof(bs->oem));
619 memcpy(img + x1, bootcode, sizeof(bootcode));
620 mk2(img + bpb.bps - 2, DOSMAGIC);
621 }
622 } else if (fat == 32 && bpb.infs != MAXU16 &&
623 (lsn == bpb.infs ||
624 (bpb.bkbs != MAXU16 &&
625 lsn == bpb.bkbs + bpb.infs))) {
626 mk4(img, 0x41615252);
627 mk4(img + bpb.bps - 28, 0x61417272);
628 mk4(img + bpb.bps - 24, 0xffffffff);
629 mk4(img + bpb.bps - 20, bpb.rdcl);
630 mk2(img + bpb.bps - 2, DOSMAGIC);
631 } else if (lsn >= bpb.res && lsn < dir &&
632 !((lsn - bpb.res) %
633 (bpb.spf ? bpb.spf : bpb.bspf))) {
634 mk1(img[0], bpb.mid);
635 for (x = 1; x < fat * (fat == 32 ? 3 : 2) / 8; x++)
636 mk1(img[x], fat == 32 && x % 4 == 3 ? 0x0f : 0xff);
637 } else if (lsn == dir && opt_L) {
638 de = (struct de *)img;
639 mklabel(de->namext, opt_L);
640 mk1(de->attr, 050);
641 x = (u_int)tm->tm_hour << 11 |
642 (u_int)tm->tm_min << 5 |
643 (u_int)tm->tm_sec >> 1;
644 mk2(de->time, x);
645 x = (u_int)(tm->tm_year - 80) << 9 |
646 (u_int)(tm->tm_mon + 1) << 5 |
647 (u_int)tm->tm_mday;
648 mk2(de->date, x);
649 }
650 if ((n = write(fd, img, bpb.bps)) == -1)
651 err(1, "%s", fname);
652 if (n != bpb.bps)
653 errx(1, "%s: can't write sector %u", fname, lsn);
654 }
655 }
656 return 0;
657}
658
659/*
660 * Exit with error if file system is mounted.
661 */
662static void
663check_mounted(const char *fname, mode_t mode)
664{
665 struct statfs *mp;
666 const char *s1, *s2;
667 size_t len;
668 int n, r;
669
670 if (!(n = getmntinfo(&mp, MNT_NOWAIT)))
671 err(1, "getmntinfo");
672 len = strlen(_PATH_DEV);
673 s1 = fname;
674 if (!strncmp(s1, _PATH_DEV, len))
675 s1 += len;
676 r = S_ISCHR(mode) && s1 != fname && *s1 == 'r';
677 for (; n--; mp++) {
678 s2 = mp->f_mntfromname;
679 if (!strncmp(s2, _PATH_DEV, len))
680 s2 += len;
681 if ((r && s2 != mp->f_mntfromname && !strcmp(s1 + 1, s2)) ||
682 !strcmp(s1, s2))
683 errx(1, "%s is mounted on %s", fname, mp->f_mntonname);
684 }
685}
686
687/*
688 * Get a standard format.
689 */
690static void
691getstdfmt(const char *fmt, struct bpb *bpb)
692{
693 u_int x, i;
694
695 x = sizeof(stdfmt) / sizeof(stdfmt[0]);
696 for (i = 0; i < x && strcmp(fmt, stdfmt[i].name); i++);
697 if (i == x)
698 errx(1, "%s: unknown standard format", fmt);
699 *bpb = stdfmt[i].bpb;
700}
701
702/*
703 * Get disk slice, partition, and geometry information.
704 */
705static void
706getdiskinfo(int fd, const char *fname, const char *dtype, int oflag,
707 struct bpb *bpb)
708{
709 struct diskslices ds;
710 struct disklabel dl, *lp;
711 const char *s1, *s2;
712 char *s;
713 int slice, part, fd1, i, e;
714
715 slice = part = -1;
716 s1 = fname;
717 if ((s2 = strrchr(s1, '/')))
718 s1 = s2 + 1;
719 for (s2 = s1; *s2 && !isdigit(*s2); s2++);
720 if (!*s2 || s2 == s1)
721 s2 = NULL;
722 else
723 while (isdigit(*++s2));
724 s1 = s2;
725 if (s2 && *s2 == 's') {
726 slice = strtol(s2 + 1, &s, 10);
727 if (slice < 1 || slice > MAX_SLICES - BASE_SLICE)
728 s2 = NULL;
729 else {
730 slice = BASE_SLICE + slice - 1;
731 s2 = s;
732 }
733 }
734 if (s2 && *s2 >= 'a' && *s2 <= 'a' + MAXPARTITIONS - 1) {
735 if (slice == -1)
736 slice = COMPATIBILITY_SLICE;
737 part = *s2++ - 'a';
738 }
739 if (!s2 || (*s2 && *s2 != '.'))
740 errx(1, "%s: can't figure out partition info", fname);
741 if (slice != -1 && (!oflag || (!bpb->bsec && part == -1))) {
742 if (ioctl(fd, DIOCGSLICEINFO, &ds) == -1) {
743 warn("ioctl (GSLICEINFO)");
744 errx(1, "%s: can't get slice info", fname);
745 }
746 if (slice >= ds.dss_nslices || !ds.dss_slices[slice].ds_size)
747 errx(1, "%s: slice is unavailable", fname);
748 if (!oflag)
749 bpb->hid = ds.dss_slices[slice].ds_offset;
750 if (!bpb->bsec && part == -1)
751 bpb->bsec = ds.dss_slices[slice].ds_size;
752 }
753 if (((slice == -1 || part != -1) &&
754 ((!oflag && part != -1) || !bpb->bsec)) ||
755 !bpb->bps || !bpb->spt || !bpb->hds) {
756 lp = &dl;
757 i = ioctl(fd, DIOCGDINFO, lp);
758 if (i == -1 && slice != -1 && part == -1) {
759 e = errno;
760 if (!(s = strdup(fname)))
761 err(1, NULL);
762 s[s1 - fname] = 0;
763 if ((fd1 = open(s, O_RDONLY)) != -1) {
764 i = ioctl(fd1, DIOCGDINFO, lp);
765 close(fd1);
766 }
767 free(s);
768 errno = e;
769 }
|
775 if (slice == -1 || part != -1) {
776 if (part == -1)
777 part = RAW_PART;
778 if (part >= lp->d_npartitions ||
779 !lp->d_partitions[part].p_size)
780 errx(1, "%s: partition is unavailable", fname);
781 if (!oflag && part != -1)
782 bpb->hid += lp->d_partitions[part].p_offset;
783 if (!bpb->bsec)
784 bpb->bsec = lp->d_partitions[part].p_size;
785 }
786 if (!bpb->bps)
787 bpb->bps = ckgeom(fname, lp->d_secsize, "bytes/sector");
788 if (!bpb->spt)
789 bpb->spt = ckgeom(fname, lp->d_nsectors, "sectors/track");
790 if (!bpb->hds)
791 bpb->hds = ckgeom(fname, lp->d_ntracks, "drive heads");
792 }
793}
794
795/*
796 * Print out BPB values.
797 */
798static void
799print_bpb(struct bpb *bpb)
800{
801 printf("bps=%u spc=%u res=%u nft=%u", bpb->bps, bpb->spc, bpb->res,
802 bpb->nft);
803 if (bpb->rde)
804 printf(" rde=%u", bpb->rde);
805 if (bpb->sec)
806 printf(" sec=%u", bpb->sec);
807 printf(" mid=%#x", bpb->mid);
808 if (bpb->spf)
809 printf(" spf=%u", bpb->spf);
810 printf(" spt=%u hds=%u hid=%u", bpb->spt, bpb->hds, bpb->hid);
811 if (bpb->bsec)
812 printf(" bsec=%u", bpb->bsec);
813 if (!bpb->spf) {
814 printf(" bspf=%u rdcl=%u", bpb->bspf, bpb->rdcl);
815 printf(" infs=");
816 printf(bpb->infs == MAXU16 ? "%#x" : "%u", bpb->infs);
817 printf(" bkbs=");
818 printf(bpb->bkbs == MAXU16 ? "%#x" : "%u", bpb->bkbs);
819 }
820 printf("\n");
821}
822
823/*
824 * Check a disk geometry value.
825 */
826static u_int
827ckgeom(const char *fname, u_int val, const char *msg)
828{
829 if (!val)
830 errx(1, "%s: no default %s", fname, msg);
831 if (val > MAXU16)
832 errx(1, "%s: illegal %s", fname, msg);
833 return val;
834}
835
836/*
837 * Convert and check a numeric option argument.
838 */
839static u_int
840argtou(const char *arg, u_int lo, u_int hi, const char *msg)
841{
842 char *s;
843 u_long x;
844
845 errno = 0;
846 x = strtoul(arg, &s, 0);
847 if (errno || !*arg || *s || x < lo || x > hi)
848 errx(1, "%s: bad %s", arg, msg);
849 return x;
850}
851
852/*
853 * Check a volume label.
854 */
855static int
856oklabel(const char *src)
857{
858 int c, i;
859
860 for (i = 0; i <= 11; i++) {
861 c = (u_char)*src++;
862 if (c < ' ' + !i || strchr("\"*+,./:;<=>?[\\]|", c))
863 break;
864 }
865 return i && !c;
866}
867
868/*
869 * Make a volume label.
870 */
871static void
872mklabel(u_int8_t *dest, const char *src)
873{
874 int c, i;
875
876 for (i = 0; i < 11; i++) {
877 c = *src ? toupper(*src++) : ' ';
878 *dest++ = !i && c == '\xe5' ? 5 : c;
879 }
880}
881
882/*
883 * Copy string, padding with spaces.
884 */
885static void
886setstr(u_int8_t *dest, const char *src, size_t len)
887{
888 while (len--)
889 *dest++ = *src ? *src++ : ' ';
890}
891
892/*
893 * Print usage message.
894 */
895static void
896usage(void)
897{
898 fprintf(stderr,
899 "usage: newfs_msdos [ -options ] special [disktype]\n");
900 fprintf(stderr, "where the options are:\n");
901 fprintf(stderr, "\t-N don't create file system: "
902 "just print out parameters\n");
903 fprintf(stderr, "\t-B get bootstrap from file\n");
904 fprintf(stderr, "\t-F FAT type (12, 16, or 32)\n");
905 fprintf(stderr, "\t-I volume ID\n");
906 fprintf(stderr, "\t-L volume label\n");
907 fprintf(stderr, "\t-O OEM string\n");
908 fprintf(stderr, "\t-S bytes/sector\n");
909 fprintf(stderr, "\t-a sectors/FAT\n");
910 fprintf(stderr, "\t-b block size\n");
911 fprintf(stderr, "\t-c sectors/cluster\n");
912 fprintf(stderr, "\t-e root directory entries\n");
913 fprintf(stderr, "\t-f standard format\n");
914 fprintf(stderr, "\t-h drive heads\n");
915 fprintf(stderr, "\t-i file system info sector\n");
916 fprintf(stderr, "\t-k backup boot sector\n");
917 fprintf(stderr, "\t-m media descriptor\n");
918 fprintf(stderr, "\t-n number of FATs\n");
919 fprintf(stderr, "\t-o hidden sectors\n");
920 fprintf(stderr, "\t-r reserved sectors\n");
921 fprintf(stderr, "\t-s file system size (sectors)\n");
922 fprintf(stderr, "\t-u sectors/track\n");
923 exit(1);
924}
| 778 if (slice == -1 || part != -1) {
779 if (part == -1)
780 part = RAW_PART;
781 if (part >= lp->d_npartitions ||
782 !lp->d_partitions[part].p_size)
783 errx(1, "%s: partition is unavailable", fname);
784 if (!oflag && part != -1)
785 bpb->hid += lp->d_partitions[part].p_offset;
786 if (!bpb->bsec)
787 bpb->bsec = lp->d_partitions[part].p_size;
788 }
789 if (!bpb->bps)
790 bpb->bps = ckgeom(fname, lp->d_secsize, "bytes/sector");
791 if (!bpb->spt)
792 bpb->spt = ckgeom(fname, lp->d_nsectors, "sectors/track");
793 if (!bpb->hds)
794 bpb->hds = ckgeom(fname, lp->d_ntracks, "drive heads");
795 }
796}
797
798/*
799 * Print out BPB values.
800 */
801static void
802print_bpb(struct bpb *bpb)
803{
804 printf("bps=%u spc=%u res=%u nft=%u", bpb->bps, bpb->spc, bpb->res,
805 bpb->nft);
806 if (bpb->rde)
807 printf(" rde=%u", bpb->rde);
808 if (bpb->sec)
809 printf(" sec=%u", bpb->sec);
810 printf(" mid=%#x", bpb->mid);
811 if (bpb->spf)
812 printf(" spf=%u", bpb->spf);
813 printf(" spt=%u hds=%u hid=%u", bpb->spt, bpb->hds, bpb->hid);
814 if (bpb->bsec)
815 printf(" bsec=%u", bpb->bsec);
816 if (!bpb->spf) {
817 printf(" bspf=%u rdcl=%u", bpb->bspf, bpb->rdcl);
818 printf(" infs=");
819 printf(bpb->infs == MAXU16 ? "%#x" : "%u", bpb->infs);
820 printf(" bkbs=");
821 printf(bpb->bkbs == MAXU16 ? "%#x" : "%u", bpb->bkbs);
822 }
823 printf("\n");
824}
825
826/*
827 * Check a disk geometry value.
828 */
829static u_int
830ckgeom(const char *fname, u_int val, const char *msg)
831{
832 if (!val)
833 errx(1, "%s: no default %s", fname, msg);
834 if (val > MAXU16)
835 errx(1, "%s: illegal %s", fname, msg);
836 return val;
837}
838
839/*
840 * Convert and check a numeric option argument.
841 */
842static u_int
843argtou(const char *arg, u_int lo, u_int hi, const char *msg)
844{
845 char *s;
846 u_long x;
847
848 errno = 0;
849 x = strtoul(arg, &s, 0);
850 if (errno || !*arg || *s || x < lo || x > hi)
851 errx(1, "%s: bad %s", arg, msg);
852 return x;
853}
854
855/*
856 * Check a volume label.
857 */
858static int
859oklabel(const char *src)
860{
861 int c, i;
862
863 for (i = 0; i <= 11; i++) {
864 c = (u_char)*src++;
865 if (c < ' ' + !i || strchr("\"*+,./:;<=>?[\\]|", c))
866 break;
867 }
868 return i && !c;
869}
870
871/*
872 * Make a volume label.
873 */
874static void
875mklabel(u_int8_t *dest, const char *src)
876{
877 int c, i;
878
879 for (i = 0; i < 11; i++) {
880 c = *src ? toupper(*src++) : ' ';
881 *dest++ = !i && c == '\xe5' ? 5 : c;
882 }
883}
884
885/*
886 * Copy string, padding with spaces.
887 */
888static void
889setstr(u_int8_t *dest, const char *src, size_t len)
890{
891 while (len--)
892 *dest++ = *src ? *src++ : ' ';
893}
894
895/*
896 * Print usage message.
897 */
898static void
899usage(void)
900{
901 fprintf(stderr,
902 "usage: newfs_msdos [ -options ] special [disktype]\n");
903 fprintf(stderr, "where the options are:\n");
904 fprintf(stderr, "\t-N don't create file system: "
905 "just print out parameters\n");
906 fprintf(stderr, "\t-B get bootstrap from file\n");
907 fprintf(stderr, "\t-F FAT type (12, 16, or 32)\n");
908 fprintf(stderr, "\t-I volume ID\n");
909 fprintf(stderr, "\t-L volume label\n");
910 fprintf(stderr, "\t-O OEM string\n");
911 fprintf(stderr, "\t-S bytes/sector\n");
912 fprintf(stderr, "\t-a sectors/FAT\n");
913 fprintf(stderr, "\t-b block size\n");
914 fprintf(stderr, "\t-c sectors/cluster\n");
915 fprintf(stderr, "\t-e root directory entries\n");
916 fprintf(stderr, "\t-f standard format\n");
917 fprintf(stderr, "\t-h drive heads\n");
918 fprintf(stderr, "\t-i file system info sector\n");
919 fprintf(stderr, "\t-k backup boot sector\n");
920 fprintf(stderr, "\t-m media descriptor\n");
921 fprintf(stderr, "\t-n number of FATs\n");
922 fprintf(stderr, "\t-o hidden sectors\n");
923 fprintf(stderr, "\t-r reserved sectors\n");
924 fprintf(stderr, "\t-s file system size (sectors)\n");
925 fprintf(stderr, "\t-u sectors/track\n");
926 exit(1);
927}
|