File: | src/usr.sbin/makefs/msdos/mkfs_msdos.c |
Warning: | line 275, column 10 The left operand of '&' is a garbage value |
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1 | /* $OpenBSD: mkfs_msdos.c,v 1.6 2021/10/06 00:40:41 deraadt Exp $ */ | |||
2 | /* $NetBSD: mkfs_msdos.c,v 1.10 2016/04/03 11:00:13 mlelstv Exp $ */ | |||
3 | ||||
4 | /* | |||
5 | * Copyright (c) 1998 Robert Nordier | |||
6 | * All rights reserved. | |||
7 | * | |||
8 | * Redistribution and use in source and binary forms, with or without | |||
9 | * modification, are permitted provided that the following conditions | |||
10 | * are met: | |||
11 | * 1. Redistributions of source code must retain the above copyright | |||
12 | * notice, this list of conditions and the following disclaimer. | |||
13 | * 2. Redistributions in binary form must reproduce the above copyright | |||
14 | * notice, this list of conditions and the following disclaimer in | |||
15 | * the documentation and/or other materials provided with the | |||
16 | * distribution. | |||
17 | * | |||
18 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS | |||
19 | * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED | |||
20 | * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |||
21 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY | |||
22 | * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |||
23 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE | |||
24 | * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS | |||
25 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER | |||
26 | * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR | |||
27 | * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN | |||
28 | * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |||
29 | */ | |||
30 | ||||
31 | #include <sys/param.h> /* powerof2 */ | |||
32 | #include <sys/types.h> | |||
33 | #include <sys/stat.h> | |||
34 | #include <sys/time.h> | |||
35 | ||||
36 | #include <ctype.h> | |||
37 | #include <err.h> | |||
38 | #include <errno(*__errno()).h> | |||
39 | #include <fcntl.h> | |||
40 | #include <paths.h> | |||
41 | #include <stdio.h> | |||
42 | #include <stdint.h> | |||
43 | #include <stdlib.h> | |||
44 | #include <limits.h> | |||
45 | #include <string.h> | |||
46 | #include <time.h> | |||
47 | #include <unistd.h> | |||
48 | #include <signal.h> | |||
49 | ||||
50 | #include <util.h> | |||
51 | #include <disktab.h> | |||
52 | ||||
53 | #include "makefs.h" | |||
54 | #include "msdos/mkfs_msdos.h" | |||
55 | ||||
56 | #define MAXU160xffff 0xffff /* maximum unsigned 16-bit quantity */ | |||
57 | #define BPN4 4 /* bits per nibble */ | |||
58 | #define NPB2 2 /* nibbles per byte */ | |||
59 | ||||
60 | #define DOSMAGIC0xaa55 0xaa55 /* DOS magic number */ | |||
61 | #define MINBPS512 512 /* minimum bytes per sector */ | |||
62 | #define MAXSPC128 128 /* maximum sectors per cluster */ | |||
63 | #define MAXNFT16 16 /* maximum number of FATs */ | |||
64 | #define DEFBLK4096 4096 /* default block size */ | |||
65 | #define DEFBLK162048 2048 /* default block size FAT16 */ | |||
66 | #define DEFRDE512 512 /* default root directory entries */ | |||
67 | #define RESFTE2 2 /* reserved FAT entries */ | |||
68 | #define MINCLS121 1 /* minimum FAT12 clusters */ | |||
69 | #define MINCLS160xff5 0xff5 /* minimum FAT16 clusters */ | |||
70 | #define MINCLS320xfff5 0xfff5 /* minimum FAT32 clusters */ | |||
71 | #define MAXCLS120xff4 0xff4 /* maximum FAT12 clusters */ | |||
72 | #define MAXCLS160xfff4 0xfff4 /* maximum FAT16 clusters */ | |||
73 | #define MAXCLS320xffffff4 0xffffff4 /* maximum FAT32 clusters */ | |||
74 | ||||
75 | #define mincls(fat_type)((fat_type) == 12 ? 1 : (fat_type) == 16 ? 0xff5 : 0xfff5) ((fat_type) == 12 ? MINCLS121 : \ | |||
76 | (fat_type) == 16 ? MINCLS160xff5 : \ | |||
77 | MINCLS320xfff5) | |||
78 | ||||
79 | #define maxcls(fat_type)((fat_type) == 12 ? 0xff4 : (fat_type) == 16 ? 0xfff4 : 0xffffff4 ) ((fat_type) == 12 ? MAXCLS120xff4 : \ | |||
80 | (fat_type) == 16 ? MAXCLS160xfff4 : \ | |||
81 | MAXCLS320xffffff4) | |||
82 | ||||
83 | #define mk1(p, x)(p) = (u_int8_t)(x) \ | |||
84 | (p) = (u_int8_t)(x) | |||
85 | ||||
86 | #define mk2(p, x)(p)[0] = (u_int8_t)(x), (p)[1] = (u_int8_t)((x) >> 010) \ | |||
87 | (p)[0] = (u_int8_t)(x), \ | |||
88 | (p)[1] = (u_int8_t)((x) >> 010) | |||
89 | ||||
90 | #define mk4(p, x)(p)[0] = (u_int8_t)(x), (p)[1] = (u_int8_t)((x) >> 010) , (p)[2] = (u_int8_t)((x) >> 020), (p)[3] = (u_int8_t)( (x) >> 030) \ | |||
91 | (p)[0] = (u_int8_t)(x), \ | |||
92 | (p)[1] = (u_int8_t)((x) >> 010), \ | |||
93 | (p)[2] = (u_int8_t)((x) >> 020), \ | |||
94 | (p)[3] = (u_int8_t)((x) >> 030) | |||
95 | ||||
96 | struct bs { | |||
97 | u_int8_t jmp[3]; /* bootstrap entry point */ | |||
98 | u_int8_t oem[8]; /* OEM name and version */ | |||
99 | }; | |||
100 | ||||
101 | struct bsbpb { | |||
102 | u_int8_t bps[2]; /* bytes per sector */ | |||
103 | u_int8_t spc; /* sectors per cluster */ | |||
104 | u_int8_t res[2]; /* reserved sectors */ | |||
105 | u_int8_t nft; /* number of FATs */ | |||
106 | u_int8_t rde[2]; /* root directory entries */ | |||
107 | u_int8_t sec[2]; /* total sectors */ | |||
108 | u_int8_t mid; /* media descriptor */ | |||
109 | u_int8_t spf[2]; /* sectors per FAT */ | |||
110 | u_int8_t spt[2]; /* sectors per track */ | |||
111 | u_int8_t hds[2]; /* drive heads */ | |||
112 | u_int8_t hid[4]; /* hidden sectors */ | |||
113 | u_int8_t bsec[4]; /* big total sectors */ | |||
114 | }; | |||
115 | ||||
116 | struct bsxbpb { | |||
117 | u_int8_t bspf[4]; /* big sectors per FAT */ | |||
118 | u_int8_t xflg[2]; /* FAT control flags */ | |||
119 | u_int8_t vers[2]; /* file system version */ | |||
120 | u_int8_t rdcl[4]; /* root directory start cluster */ | |||
121 | u_int8_t infs[2]; /* file system info sector */ | |||
122 | u_int8_t bkbs[2]; /* backup boot sector */ | |||
123 | u_int8_t rsvd[12]; /* reserved */ | |||
124 | }; | |||
125 | ||||
126 | struct bsx { | |||
127 | u_int8_t drv; /* drive number */ | |||
128 | u_int8_t rsvd; /* reserved */ | |||
129 | u_int8_t sig; /* extended boot signature */ | |||
130 | u_int8_t volid[4]; /* volume ID number */ | |||
131 | u_int8_t label[11]; /* volume label */ | |||
132 | u_int8_t type[8]; /* file system type */ | |||
133 | }; | |||
134 | ||||
135 | struct de { | |||
136 | u_int8_t namext[11]; /* name and extension */ | |||
137 | u_int8_t attr; /* attributes */ | |||
138 | u_int8_t rsvd[10]; /* reserved */ | |||
139 | u_int8_t time[2]; /* creation time */ | |||
140 | u_int8_t date[2]; /* creation date */ | |||
141 | u_int8_t clus[2]; /* starting cluster */ | |||
142 | u_int8_t size[4]; /* size */ | |||
143 | }; | |||
144 | ||||
145 | struct bpb { | |||
146 | u_int bps; /* bytes per sector */ | |||
147 | u_int spc; /* sectors per cluster */ | |||
148 | u_int res; /* reserved sectors */ | |||
149 | u_int nft; /* number of FATs */ | |||
150 | u_int rde; /* root directory entries */ | |||
151 | u_int sec; /* total sectors */ | |||
152 | u_int mid; /* media descriptor */ | |||
153 | u_int spf; /* sectors per FAT */ | |||
154 | u_int spt; /* sectors per track */ | |||
155 | u_int hds; /* drive heads */ | |||
156 | u_int hid; /* hidden sectors */ | |||
157 | u_int bsec; /* big total sectors */ | |||
158 | u_int bspf; /* big sectors per FAT */ | |||
159 | u_int rdcl; /* root directory start cluster */ | |||
160 | u_int infs; /* file system info sector */ | |||
161 | u_int bkbs; /* backup boot sector */ | |||
162 | }; | |||
163 | ||||
164 | #define INIT(a, b, c, d, e, f, g, h, i, j){ .bps = a, .spc = b, .res = c, .nft = d, .rde = e, .sec = f, .mid = g, .spf = h, .spt = i, .hds = j, } \ | |||
165 | { .bps = a, .spc = b, .res = c, .nft = d, .rde = e, \ | |||
166 | .sec = f, .mid = g, .spf = h, .spt = i, .hds = j, } | |||
167 | static struct { | |||
168 | const char *name; | |||
169 | struct bpb bpb; | |||
170 | } stdfmt[] = { | |||
171 | {"160", INIT(512, 1, 1, 2, 64, 320, 0xfe, 1, 8, 1){ .bps = 512, .spc = 1, .res = 1, .nft = 2, .rde = 64, .sec = 320, .mid = 0xfe, .spf = 1, .spt = 8, .hds = 1, }}, | |||
172 | {"180", INIT(512, 1, 1, 2, 64, 360, 0xfc, 2, 9, 1){ .bps = 512, .spc = 1, .res = 1, .nft = 2, .rde = 64, .sec = 360, .mid = 0xfc, .spf = 2, .spt = 9, .hds = 1, }}, | |||
173 | {"320", INIT(512, 2, 1, 2, 112, 640, 0xff, 1, 8, 2){ .bps = 512, .spc = 2, .res = 1, .nft = 2, .rde = 112, .sec = 640, .mid = 0xff, .spf = 1, .spt = 8, .hds = 2, }}, | |||
174 | {"360", INIT(512, 2, 1, 2, 112, 720, 0xfd, 2, 9, 2){ .bps = 512, .spc = 2, .res = 1, .nft = 2, .rde = 112, .sec = 720, .mid = 0xfd, .spf = 2, .spt = 9, .hds = 2, }}, | |||
175 | {"640", INIT(512, 2, 1, 2, 112, 1280, 0xfb, 2, 8, 2){ .bps = 512, .spc = 2, .res = 1, .nft = 2, .rde = 112, .sec = 1280, .mid = 0xfb, .spf = 2, .spt = 8, .hds = 2, }}, | |||
176 | {"720", INIT(512, 2, 1, 2, 112, 1440, 0xf9, 3, 9, 2){ .bps = 512, .spc = 2, .res = 1, .nft = 2, .rde = 112, .sec = 1440, .mid = 0xf9, .spf = 3, .spt = 9, .hds = 2, }}, | |||
177 | {"1200", INIT(512, 1, 1, 2, 224, 2400, 0xf9, 7, 15, 2){ .bps = 512, .spc = 1, .res = 1, .nft = 2, .rde = 224, .sec = 2400, .mid = 0xf9, .spf = 7, .spt = 15, .hds = 2, }}, | |||
178 | {"1232", INIT(1024,1, 1, 2, 192, 1232, 0xfe, 2, 8, 2){ .bps = 1024, .spc = 1, .res = 1, .nft = 2, .rde = 192, .sec = 1232, .mid = 0xfe, .spf = 2, .spt = 8, .hds = 2, }}, | |||
179 | {"1440", INIT(512, 1, 1, 2, 224, 2880, 0xf0, 9, 18, 2){ .bps = 512, .spc = 1, .res = 1, .nft = 2, .rde = 224, .sec = 2880, .mid = 0xf0, .spf = 9, .spt = 18, .hds = 2, }}, | |||
180 | {"2880", INIT(512, 2, 1, 2, 240, 5760, 0xf0, 9, 36, 2){ .bps = 512, .spc = 2, .res = 1, .nft = 2, .rde = 240, .sec = 5760, .mid = 0xf0, .spf = 9, .spt = 36, .hds = 2, }} | |||
181 | }; | |||
182 | ||||
183 | static u_int8_t bootcode[] = { | |||
184 | 0xfa, /* cli */ | |||
185 | 0x31, 0xc0, /* xor ax,ax */ | |||
186 | 0x8e, 0xd0, /* mov ss,ax */ | |||
187 | 0xbc, 0x00, 0x7c, /* mov sp,7c00h */ | |||
188 | 0xfb, /* sti */ | |||
189 | 0x8e, 0xd8, /* mov ds,ax */ | |||
190 | 0xe8, 0x00, 0x00, /* call $ + 3 */ | |||
191 | 0x5e, /* pop si */ | |||
192 | 0x83, 0xc6, 0x19, /* add si,+19h */ | |||
193 | 0xbb, 0x07, 0x00, /* mov bx,0007h */ | |||
194 | 0xfc, /* cld */ | |||
195 | 0xac, /* lodsb */ | |||
196 | 0x84, 0xc0, /* test al,al */ | |||
197 | 0x74, 0x06, /* jz $ + 8 */ | |||
198 | 0xb4, 0x0e, /* mov ah,0eh */ | |||
199 | 0xcd, 0x10, /* int 10h */ | |||
200 | 0xeb, 0xf5, /* jmp $ - 9 */ | |||
201 | 0x30, 0xe4, /* xor ah,ah */ | |||
202 | 0xcd, 0x16, /* int 16h */ | |||
203 | 0xcd, 0x19, /* int 19h */ | |||
204 | 0x0d, 0x0a, | |||
205 | 'N', 'o', 'n', '-', 's', 'y', 's', 't', | |||
206 | 'e', 'm', ' ', 'd', 'i', 's', 'k', | |||
207 | 0x0d, 0x0a, | |||
208 | 'P', 'r', 'e', 's', 's', ' ', 'a', 'n', | |||
209 | 'y', ' ', 'k', 'e', 'y', ' ', 't', 'o', | |||
210 | ' ', 'r', 'e', 'b', 'o', 'o', 't', | |||
211 | 0x0d, 0x0a, | |||
212 | 0 | |||
213 | }; | |||
214 | ||||
215 | static int got_siginfo = 0; /* received a SIGINFO */ | |||
216 | ||||
217 | static int getstdfmt(const char *, struct bpb *); | |||
218 | static int getbpbinfo(int, const char *, const char *, int, struct bpb *, int); | |||
219 | static void print_bpb(struct bpb *); | |||
220 | static int ckgeom(const char *, u_int, const char *); | |||
221 | static int oklabel(const char *); | |||
222 | static void mklabel(u_int8_t *, const char *); | |||
223 | static void setstr(u_int8_t *, const char *, size_t); | |||
224 | static void infohandler(int sig); | |||
225 | ||||
226 | int | |||
227 | mkfs_msdos(const char *fname, const char *dtype, const struct msdos_options *op) | |||
228 | { | |||
229 | char buf[PATH_MAX1024]; | |||
230 | struct stat sb; | |||
231 | struct timeval tv; | |||
232 | struct bpb bpb; | |||
233 | struct tm *tm; | |||
234 | struct bs *bs; | |||
235 | struct bsbpb *bsbpb; | |||
236 | struct bsxbpb *bsxbpb; | |||
237 | struct bsx *bsx; | |||
238 | struct de *de; | |||
239 | u_int8_t *img; | |||
240 | const char *bname; | |||
241 | ssize_t n; | |||
242 | time_t now; | |||
243 | u_int bss, rds, cls, dir, lsn, x, x1, x2; | |||
244 | int ch, fd, fd1; | |||
245 | struct msdos_options o = *op; | |||
246 | int oflags = O_RDWR0x0002 | O_CREAT0x0200; | |||
247 | ||||
248 | if (o.block_size && o.sectors_per_cluster) { | |||
| ||||
249 | warnx("Cannot specify both block size and sectors per cluster"); | |||
250 | return -1; | |||
251 | } | |||
252 | if (o.OEM_string && strlen(o.OEM_string) > 8) { | |||
253 | warnx("%s: bad OEM string", o.OEM_string); | |||
254 | return -1; | |||
255 | } | |||
256 | if (o.create_size) { | |||
257 | if (o.offset == 0) | |||
258 | oflags |= O_TRUNC0x0400; | |||
259 | fd = open(fname, oflags, 0644); | |||
260 | if (fd == -1) { | |||
261 | warnx("failed to create %s", fname); | |||
262 | return -1; | |||
263 | } | |||
264 | (void)lseek(fd, o.create_size - 1, SEEK_SET0); | |||
265 | if (write(fd, "\0", 1) != 1) { | |||
266 | warn("failed to set file size"); | |||
267 | return -1; | |||
268 | } | |||
269 | (void)lseek(fd, 0, SEEK_SET0); | |||
270 | } else if ((fd = open(fname, O_RDWR0x0002)) == -1 || | |||
271 | fstat(fd, &sb)) { | |||
272 | warn("%s", fname); | |||
273 | return -1; | |||
274 | } | |||
275 | if (!S_ISCHR(sb.st_mode)((sb.st_mode & 0170000) == 0020000) && !o.create_size) { | |||
| ||||
276 | warnx("warning, %s is not a character device", fname); | |||
277 | return -1; | |||
278 | } | |||
279 | if (o.offset && o.offset != lseek(fd, o.offset, SEEK_SET0)) { | |||
280 | warnx("cannot seek to %jd", (intmax_t)o.offset); | |||
281 | return -1; | |||
282 | } | |||
283 | memset(&bpb, 0, sizeof(bpb)); | |||
284 | if (o.floppy) { | |||
285 | if (getstdfmt(o.floppy, &bpb) == -1) | |||
286 | return -1; | |||
287 | bpb.bsec = bpb.sec; | |||
288 | bpb.sec = 0; | |||
289 | bpb.bspf = bpb.spf; | |||
290 | bpb.spf = 0; | |||
291 | } | |||
292 | if (o.drive_heads) | |||
293 | bpb.hds = o.drive_heads; | |||
294 | if (o.sectors_per_track) | |||
295 | bpb.spt = o.sectors_per_track; | |||
296 | if (o.bytes_per_sector) | |||
297 | bpb.bps = o.bytes_per_sector; | |||
298 | if (o.size) | |||
299 | bpb.bsec = o.size; | |||
300 | if (o.hidden_sectors_set) | |||
301 | bpb.hid = o.hidden_sectors; | |||
302 | if (!(o.floppy || (o.drive_heads && o.sectors_per_track && | |||
303 | o.bytes_per_sector && o.size && o.hidden_sectors_set))) { | |||
304 | if (getbpbinfo(fd, fname, dtype, o.hidden_sectors_set, &bpb, | |||
305 | o.create_size != 0) == -1) | |||
306 | return -1; | |||
307 | bpb.bsec -= (o.offset / bpb.bps); | |||
308 | if (bpb.spc == 0) { /* set defaults */ | |||
309 | /* minimum cluster size */ | |||
310 | switch (o.fat_type) { | |||
311 | case 12: | |||
312 | bpb.spc = 1; /* use 512 bytes */ | |||
313 | x = 2; /* up to 2MB */ | |||
314 | break; | |||
315 | case 16: | |||
316 | bpb.spc = 1; /* use 512 bytes */ | |||
317 | x = 32; /* up to 32MB */ | |||
318 | break; | |||
319 | default: | |||
320 | bpb.spc = 8; /* use 4k */ | |||
321 | x = 8192; /* up to 8GB */ | |||
322 | break; | |||
323 | } | |||
324 | x1 = howmany(bpb.bsec, (1048576 / 512))(((bpb.bsec) + (((1048576 / 512)) - 1)) / ((1048576 / 512))); /* -> MB */ | |||
325 | while (bpb.spc < 128 && x < x1) { | |||
326 | x *= 2; | |||
327 | bpb.spc *= 2; | |||
328 | } | |||
329 | } | |||
330 | } | |||
331 | ||||
332 | if (o.volume_label && !oklabel(o.volume_label)) { | |||
333 | warnx("%s: bad volume label", o.volume_label); | |||
334 | return -1; | |||
335 | } | |||
336 | ||||
337 | switch (o.fat_type) { | |||
338 | case 0: | |||
339 | if (o.floppy) | |||
340 | o.fat_type = 12; | |||
341 | else if (!o.directory_entries && (o.info_sector || o.backup_sector)) | |||
342 | o.fat_type = 32; | |||
343 | break; | |||
344 | case 12: | |||
345 | case 16: | |||
346 | if (o.info_sector) { | |||
347 | warnx("Cannot specify info sector with FAT%u", o.fat_type); | |||
348 | return -1; | |||
349 | } | |||
350 | if (o.backup_sector) { | |||
351 | warnx("Cannot specify backup sector with FAT%u", o.fat_type); | |||
352 | return -1; | |||
353 | } | |||
354 | break; | |||
355 | case 32: | |||
356 | if (o.directory_entries) { | |||
357 | warnx("Cannot specify directory entries with FAT32"); | |||
358 | return -1; | |||
359 | } | |||
360 | break; | |||
361 | default: | |||
362 | warnx("%d: bad FAT type", o.fat_type); | |||
363 | return -1; | |||
364 | } | |||
365 | if (!powerof2(bpb.bps)((((bpb.bps)-1)&(bpb.bps))==0)) { | |||
366 | warnx("bytes/sector (%u) is not a power of 2", bpb.bps); | |||
367 | return -1; | |||
368 | } | |||
369 | if (bpb.bps < MINBPS512) { | |||
370 | warnx("bytes/sector (%u) is too small; minimum is %u", | |||
371 | bpb.bps, MINBPS512); | |||
372 | return -1; | |||
373 | } | |||
374 | ||||
375 | if (o.floppy && o.fat_type == 32) | |||
376 | bpb.rde = 0; | |||
377 | if (o.block_size) { | |||
378 | if (!powerof2(o.block_size)((((o.block_size)-1)&(o.block_size))==0)) { | |||
379 | warnx("block size (%u) is not a power of 2", o.block_size); | |||
380 | return -1; | |||
381 | } | |||
382 | if (o.block_size < bpb.bps) { | |||
383 | warnx("block size (%u) is too small; minimum is %u", | |||
384 | o.block_size, bpb.bps); | |||
385 | return -1; | |||
386 | } | |||
387 | if (o.block_size > bpb.bps * MAXSPC128) { | |||
388 | warnx("block size (%u) is too large; maximum is %u", | |||
389 | o.block_size, bpb.bps * MAXSPC128); | |||
390 | return -1; | |||
391 | } | |||
392 | bpb.spc = o.block_size / bpb.bps; | |||
393 | } | |||
394 | if (o.sectors_per_cluster) { | |||
395 | if (!powerof2(o.sectors_per_cluster)((((o.sectors_per_cluster)-1)&(o.sectors_per_cluster))==0 )) { | |||
396 | warnx("sectors/cluster (%u) is not a power of 2", | |||
397 | o.sectors_per_cluster); | |||
398 | return -1; | |||
399 | } | |||
400 | bpb.spc = o.sectors_per_cluster; | |||
401 | } | |||
402 | if (o.reserved_sectors) | |||
403 | bpb.res = o.reserved_sectors; | |||
404 | if (o.num_FAT) { | |||
405 | if (o.num_FAT > MAXNFT16) { | |||
406 | warnx("number of FATs (%u) is too large; maximum is %u", | |||
407 | o.num_FAT, MAXNFT16); | |||
408 | return -1; | |||
409 | } | |||
410 | bpb.nft = o.num_FAT; | |||
411 | } | |||
412 | if (o.directory_entries) | |||
413 | bpb.rde = o.directory_entries; | |||
414 | if (o.media_descriptor_set) { | |||
415 | if (o.media_descriptor < 0xf0) { | |||
416 | warnx("illegal media descriptor (%#x)", o.media_descriptor); | |||
417 | return -1; | |||
418 | } | |||
419 | bpb.mid = o.media_descriptor; | |||
420 | } | |||
421 | if (o.sectors_per_fat) | |||
422 | bpb.bspf = o.sectors_per_fat; | |||
423 | if (o.info_sector) | |||
424 | bpb.infs = o.info_sector; | |||
425 | if (o.backup_sector) | |||
426 | bpb.bkbs = o.backup_sector; | |||
427 | bss = 1; | |||
428 | bname = NULL((void *)0); | |||
429 | fd1 = -1; | |||
430 | if (o.bootstrap) { | |||
431 | bname = o.bootstrap; | |||
432 | if (!strchr(bname, '/')) { | |||
433 | snprintf(buf, sizeof(buf), "/boot/%s", bname); | |||
434 | if (!(bname = strdup(buf))) { | |||
435 | warn(NULL((void *)0)); | |||
436 | return -1; | |||
437 | } | |||
438 | } | |||
439 | if ((fd1 = open(bname, O_RDONLY0x0000)) == -1 || fstat(fd1, &sb)) { | |||
440 | warn("%s", bname); | |||
441 | return -1; | |||
442 | } | |||
443 | if (!S_ISREG(sb.st_mode)((sb.st_mode & 0170000) == 0100000) || sb.st_size % bpb.bps || | |||
444 | sb.st_size < bpb.bps || sb.st_size > bpb.bps * MAXU160xffff) { | |||
445 | warnx("%s: inappropriate file type or format", bname); | |||
446 | return -1; | |||
447 | } | |||
448 | bss = sb.st_size / bpb.bps; | |||
449 | } | |||
450 | if (!bpb.nft) | |||
451 | bpb.nft = 2; | |||
452 | if (!o.fat_type) { | |||
453 | if (bpb.bsec < (bpb.res ? bpb.res : bss) + | |||
454 | howmany((RESFTE + (bpb.spc ? MINCLS16 : MAXCLS12 + 1)) *((((2 + (bpb.spc ? 0xff5 : 0xff4 + 1)) * ((bpb.spc ? 16 : 12) / 4)) + ((bpb.bps * 2) - 1)) / (bpb.bps * 2)) | |||
455 | ((bpb.spc ? 16 : 12) / BPN), bpb.bps * NPB)((((2 + (bpb.spc ? 0xff5 : 0xff4 + 1)) * ((bpb.spc ? 16 : 12) / 4)) + ((bpb.bps * 2) - 1)) / (bpb.bps * 2)) * | |||
456 | bpb.nft + | |||
457 | howmany(bpb.rde ? bpb.rde : DEFRDE,(((bpb.rde ? bpb.rde : 512) + ((bpb.bps / sizeof(struct de)) - 1)) / (bpb.bps / sizeof(struct de))) | |||
458 | bpb.bps / sizeof(struct de))(((bpb.rde ? bpb.rde : 512) + ((bpb.bps / sizeof(struct de)) - 1)) / (bpb.bps / sizeof(struct de))) + | |||
459 | (bpb.spc ? MINCLS160xff5 : MAXCLS120xff4 + 1) * | |||
460 | (bpb.spc ? bpb.spc : howmany(DEFBLK, bpb.bps)(((4096) + ((bpb.bps) - 1)) / (bpb.bps)))) | |||
461 | o.fat_type = 12; | |||
462 | else if (bpb.rde || bpb.bsec < | |||
463 | (bpb.res ? bpb.res : bss) + | |||
464 | howmany((RESFTE + MAXCLS16) * 2, bpb.bps)((((2 + 0xfff4) * 2) + ((bpb.bps) - 1)) / (bpb.bps)) * bpb.nft + | |||
465 | howmany(DEFRDE, bpb.bps / sizeof(struct de))(((512) + ((bpb.bps / sizeof(struct de)) - 1)) / (bpb.bps / sizeof (struct de))) + | |||
466 | (MAXCLS160xfff4 + 1) * | |||
467 | (bpb.spc ? bpb.spc : howmany(8192, bpb.bps)(((8192) + ((bpb.bps) - 1)) / (bpb.bps)))) | |||
468 | o.fat_type = 16; | |||
469 | else | |||
470 | o.fat_type = 32; | |||
471 | } | |||
472 | x = bss; | |||
473 | if (o.fat_type == 32) { | |||
474 | if (!bpb.infs) { | |||
475 | if (x == MAXU160xffff || x == bpb.bkbs) { | |||
476 | warnx("no room for info sector"); | |||
477 | return -1; | |||
478 | } | |||
479 | bpb.infs = x; | |||
480 | } | |||
481 | if (bpb.infs != MAXU160xffff && x <= bpb.infs) | |||
482 | x = bpb.infs + 1; | |||
483 | if (!bpb.bkbs) { | |||
484 | if (x == MAXU160xffff) { | |||
485 | warnx("no room for backup sector"); | |||
486 | return -1; | |||
487 | } | |||
488 | bpb.bkbs = x; | |||
489 | } else if (bpb.bkbs != MAXU160xffff && bpb.bkbs == bpb.infs) { | |||
490 | warnx("backup sector would overwrite info sector"); | |||
491 | return -1; | |||
492 | } | |||
493 | if (bpb.bkbs != MAXU160xffff && x <= bpb.bkbs) | |||
494 | x = bpb.bkbs + 1; | |||
495 | } | |||
496 | if (!bpb.res) | |||
497 | bpb.res = o.fat_type == 32 ? MAXIMUM(x, MAXIMUM(16384 / bpb.bps, 4))(((x) > ((((16384 / bpb.bps) > (4)) ? (16384 / bpb.bps) : (4)))) ? (x) : ((((16384 / bpb.bps) > (4)) ? (16384 / bpb .bps) : (4)))) : x; | |||
498 | else if (bpb.res < x) { | |||
499 | warnx("too few reserved sectors (need %d have %d)", x, bpb.res); | |||
500 | return -1; | |||
501 | } | |||
502 | if (o.fat_type != 32 && !bpb.rde) | |||
503 | bpb.rde = DEFRDE512; | |||
504 | rds = howmany(bpb.rde, bpb.bps / sizeof(struct de))(((bpb.rde) + ((bpb.bps / sizeof(struct de)) - 1)) / (bpb.bps / sizeof(struct de))); | |||
505 | if (!bpb.spc) | |||
506 | for (bpb.spc = howmany(o.fat_type == 16 ? DEFBLK16 : DEFBLK, bpb.bps)(((o.fat_type == 16 ? 2048 : 4096) + ((bpb.bps) - 1)) / (bpb. bps)); | |||
507 | bpb.spc < MAXSPC128 && | |||
508 | bpb.res + | |||
509 | howmany((RESFTE + maxcls(o.fat_type)) * (o.fat_type / BPN),((((2 + ((o.fat_type) == 12 ? 0xff4 : (o.fat_type) == 16 ? 0xfff4 : 0xffffff4)) * (o.fat_type / 4)) + ((bpb.bps * 2) - 1)) / ( bpb.bps * 2)) | |||
510 | bpb.bps * NPB)((((2 + ((o.fat_type) == 12 ? 0xff4 : (o.fat_type) == 16 ? 0xfff4 : 0xffffff4)) * (o.fat_type / 4)) + ((bpb.bps * 2) - 1)) / ( bpb.bps * 2)) * bpb.nft + | |||
511 | rds + | |||
512 | (u_int64_t)(maxcls(o.fat_type)((o.fat_type) == 12 ? 0xff4 : (o.fat_type) == 16 ? 0xfff4 : 0xffffff4 ) + 1) * bpb.spc <= bpb.bsec; | |||
513 | bpb.spc <<= 1); | |||
514 | if (o.fat_type != 32 && bpb.bspf > MAXU160xffff) { | |||
515 | warnx("too many sectors/FAT for FAT12/16"); | |||
516 | return -1; | |||
517 | } | |||
518 | x1 = bpb.res + rds; | |||
519 | x = bpb.bspf ? bpb.bspf : 1; | |||
520 | if (x1 + (u_int64_t)x * bpb.nft > bpb.bsec) { | |||
521 | warnx("meta data exceeds file system size"); | |||
522 | return -1; | |||
523 | } | |||
524 | x1 += x * bpb.nft; | |||
525 | x = (u_int64_t)(bpb.bsec - x1) * bpb.bps * NPB2 / | |||
526 | (bpb.spc * bpb.bps * NPB2 + o.fat_type / BPN4 * bpb.nft); | |||
527 | x2 = howmany((RESFTE + MINIMUM(x, maxcls(o.fat_type))) * (o.fat_type / BPN),((((2 + (((x) < (((o.fat_type) == 12 ? 0xff4 : (o.fat_type ) == 16 ? 0xfff4 : 0xffffff4))) ? (x) : (((o.fat_type) == 12 ? 0xff4 : (o.fat_type) == 16 ? 0xfff4 : 0xffffff4)))) * (o.fat_type / 4)) + ((bpb.bps * 2) - 1)) / (bpb.bps * 2)) | |||
528 | bpb.bps * NPB)((((2 + (((x) < (((o.fat_type) == 12 ? 0xff4 : (o.fat_type ) == 16 ? 0xfff4 : 0xffffff4))) ? (x) : (((o.fat_type) == 12 ? 0xff4 : (o.fat_type) == 16 ? 0xfff4 : 0xffffff4)))) * (o.fat_type / 4)) + ((bpb.bps * 2) - 1)) / (bpb.bps * 2)); | |||
529 | if (!bpb.bspf) { | |||
530 | bpb.bspf = x2; | |||
531 | x1 += (bpb.bspf - 1) * bpb.nft; | |||
532 | } | |||
533 | cls = (bpb.bsec - x1) / bpb.spc; | |||
534 | x = (u_int64_t)bpb.bspf * bpb.bps * NPB2 / (o.fat_type / BPN4) - RESFTE2; | |||
535 | if (cls > x) | |||
536 | cls = x; | |||
537 | if (bpb.bspf < x2) { | |||
538 | warnx("warning: sectors/FAT limits file system to %u clusters", | |||
539 | cls); | |||
540 | return -1; | |||
541 | } | |||
542 | if (cls < mincls(o.fat_type)((o.fat_type) == 12 ? 1 : (o.fat_type) == 16 ? 0xff5 : 0xfff5 )) { | |||
543 | warnx("%u clusters too few clusters for FAT%u, need %u", cls, | |||
544 | o.fat_type, mincls(o.fat_type)((o.fat_type) == 12 ? 1 : (o.fat_type) == 16 ? 0xff5 : 0xfff5 )); | |||
545 | return -1; | |||
546 | } | |||
547 | if (cls > maxcls(o.fat_type)((o.fat_type) == 12 ? 0xff4 : (o.fat_type) == 16 ? 0xfff4 : 0xffffff4 )) { | |||
548 | cls = maxcls(o.fat_type)((o.fat_type) == 12 ? 0xff4 : (o.fat_type) == 16 ? 0xfff4 : 0xffffff4 ); | |||
549 | bpb.bsec = x1 + (cls + 1) * bpb.spc - 1; | |||
550 | warnx("warning: FAT type limits file system to %u sectors", | |||
551 | bpb.bsec); | |||
552 | return -1; | |||
553 | } | |||
554 | printf("%s: %u sector%s in %u FAT%u cluster%s " | |||
555 | "(%u bytes/cluster)\n", fname, cls * bpb.spc, | |||
556 | cls * bpb.spc == 1 ? "" : "s", cls, o.fat_type, | |||
557 | cls == 1 ? "" : "s", bpb.bps * bpb.spc); | |||
558 | if (!bpb.mid) | |||
559 | bpb.mid = !bpb.hid ? 0xf0 : 0xf8; | |||
560 | if (o.fat_type == 32) | |||
561 | bpb.rdcl = RESFTE2; | |||
562 | if (bpb.hid + bpb.bsec <= MAXU160xffff) { | |||
563 | bpb.sec = bpb.bsec; | |||
564 | bpb.bsec = 0; | |||
565 | } | |||
566 | if (o.fat_type != 32) { | |||
567 | bpb.spf = bpb.bspf; | |||
568 | bpb.bspf = 0; | |||
569 | } | |||
570 | ch = 0; | |||
571 | if (o.fat_type == 12) | |||
572 | ch = 1; /* 001 Primary DOS with 12 bit FAT */ | |||
573 | else if (o.fat_type == 16) { | |||
574 | if (bpb.bsec == 0) | |||
575 | ch = 4; /* 004 Primary DOS with 16 bit FAT <32M */ | |||
576 | else | |||
577 | ch = 6; /* 006 Primary 'big' DOS, 16-bit FAT (> 32MB) */ | |||
578 | /* | |||
579 | * XXX: what about: | |||
580 | * 014 DOS (16-bit FAT) - LBA | |||
581 | * ? | |||
582 | */ | |||
583 | } else if (o.fat_type == 32) { | |||
584 | ch = 11; /* 011 Primary DOS with 32 bit FAT */ | |||
585 | /* | |||
586 | * XXX: what about: | |||
587 | * 012 Primary DOS with 32 bit FAT - LBA | |||
588 | * ? | |||
589 | */ | |||
590 | } | |||
591 | if (ch != 0) | |||
592 | printf("MBR type: %d\n", ch); | |||
593 | print_bpb(&bpb); | |||
594 | ||||
595 | gettimeofday(&tv, NULL((void *)0)); | |||
596 | now = tv.tv_sec; | |||
597 | tm = localtime(&now); | |||
598 | img = emalloc(bpb.bps); | |||
599 | dir = bpb.res + (bpb.spf ? bpb.spf : bpb.bspf) * bpb.nft; | |||
600 | signal(SIGINFO29, infohandler); | |||
601 | for (lsn = 0; lsn < dir + (o.fat_type == 32 ? bpb.spc : rds); lsn++) { | |||
602 | if (got_siginfo) { | |||
603 | fprintf(stderr(&__sF[2]),"%s: writing sector %u of %u (%u%%)\n", | |||
604 | fname,lsn,(dir + (o.fat_type == 32 ? bpb.spc : rds)), | |||
605 | (lsn*100)/(dir + (o.fat_type == 32 ? bpb.spc : rds))); | |||
606 | got_siginfo = 0; | |||
607 | } | |||
608 | x = lsn; | |||
609 | if (o.bootstrap && | |||
610 | o.fat_type == 32 && bpb.bkbs != MAXU160xffff && | |||
611 | bss <= bpb.bkbs && x >= bpb.bkbs) { | |||
612 | x -= bpb.bkbs; | |||
613 | if (!x && lseek(fd1, o.offset, SEEK_SET0)) { | |||
614 | warn("%s", bname); | |||
615 | return -1; | |||
616 | } | |||
617 | } | |||
618 | if (o.bootstrap && x < bss) { | |||
619 | if ((n = read(fd1, img, bpb.bps)) == -1) { | |||
620 | warn("%s", bname); | |||
621 | return -1; | |||
622 | } | |||
623 | if ((size_t)n != bpb.bps) { | |||
624 | warnx("%s: can't read sector %u", bname, x); | |||
625 | return -1; | |||
626 | } | |||
627 | } else | |||
628 | memset(img, 0, bpb.bps); | |||
629 | if (!lsn || | |||
630 | (o.fat_type == 32 && bpb.bkbs != MAXU160xffff && lsn == bpb.bkbs)) { | |||
631 | x1 = sizeof(struct bs); | |||
632 | bsbpb = (struct bsbpb *)(img + x1); | |||
633 | mk2(bsbpb->bps, bpb.bps)(bsbpb->bps)[0] = (u_int8_t)(bpb.bps), (bsbpb->bps)[1] = (u_int8_t)((bpb.bps) >> 010); | |||
634 | mk1(bsbpb->spc, bpb.spc)(bsbpb->spc) = (u_int8_t)(bpb.spc); | |||
635 | mk2(bsbpb->res, bpb.res)(bsbpb->res)[0] = (u_int8_t)(bpb.res), (bsbpb->res)[1] = (u_int8_t)((bpb.res) >> 010); | |||
636 | mk1(bsbpb->nft, bpb.nft)(bsbpb->nft) = (u_int8_t)(bpb.nft); | |||
637 | mk2(bsbpb->rde, bpb.rde)(bsbpb->rde)[0] = (u_int8_t)(bpb.rde), (bsbpb->rde)[1] = (u_int8_t)((bpb.rde) >> 010); | |||
638 | mk2(bsbpb->sec, bpb.sec)(bsbpb->sec)[0] = (u_int8_t)(bpb.sec), (bsbpb->sec)[1] = (u_int8_t)((bpb.sec) >> 010); | |||
639 | mk1(bsbpb->mid, bpb.mid)(bsbpb->mid) = (u_int8_t)(bpb.mid); | |||
640 | mk2(bsbpb->spf, bpb.spf)(bsbpb->spf)[0] = (u_int8_t)(bpb.spf), (bsbpb->spf)[1] = (u_int8_t)((bpb.spf) >> 010); | |||
641 | mk2(bsbpb->spt, bpb.spt)(bsbpb->spt)[0] = (u_int8_t)(bpb.spt), (bsbpb->spt)[1] = (u_int8_t)((bpb.spt) >> 010); | |||
642 | mk2(bsbpb->hds, bpb.hds)(bsbpb->hds)[0] = (u_int8_t)(bpb.hds), (bsbpb->hds)[1] = (u_int8_t)((bpb.hds) >> 010); | |||
643 | mk4(bsbpb->hid, bpb.hid)(bsbpb->hid)[0] = (u_int8_t)(bpb.hid), (bsbpb->hid)[1] = (u_int8_t)((bpb.hid) >> 010), (bsbpb->hid)[2] = (u_int8_t )((bpb.hid) >> 020), (bsbpb->hid)[3] = (u_int8_t)((bpb .hid) >> 030); | |||
644 | mk4(bsbpb->bsec, bpb.bsec)(bsbpb->bsec)[0] = (u_int8_t)(bpb.bsec), (bsbpb->bsec)[ 1] = (u_int8_t)((bpb.bsec) >> 010), (bsbpb->bsec)[2] = (u_int8_t)((bpb.bsec) >> 020), (bsbpb->bsec)[3] = (u_int8_t)((bpb.bsec) >> 030); | |||
645 | x1 += sizeof(struct bsbpb); | |||
646 | if (o.fat_type == 32) { | |||
647 | bsxbpb = (struct bsxbpb *)(img + x1); | |||
648 | mk4(bsxbpb->bspf, bpb.bspf)(bsxbpb->bspf)[0] = (u_int8_t)(bpb.bspf), (bsxbpb->bspf )[1] = (u_int8_t)((bpb.bspf) >> 010), (bsxbpb->bspf) [2] = (u_int8_t)((bpb.bspf) >> 020), (bsxbpb->bspf)[ 3] = (u_int8_t)((bpb.bspf) >> 030); | |||
649 | mk2(bsxbpb->xflg, 0)(bsxbpb->xflg)[0] = (u_int8_t)(0), (bsxbpb->xflg)[1] = ( u_int8_t)((0) >> 010); | |||
650 | mk2(bsxbpb->vers, 0)(bsxbpb->vers)[0] = (u_int8_t)(0), (bsxbpb->vers)[1] = ( u_int8_t)((0) >> 010); | |||
651 | mk4(bsxbpb->rdcl, bpb.rdcl)(bsxbpb->rdcl)[0] = (u_int8_t)(bpb.rdcl), (bsxbpb->rdcl )[1] = (u_int8_t)((bpb.rdcl) >> 010), (bsxbpb->rdcl) [2] = (u_int8_t)((bpb.rdcl) >> 020), (bsxbpb->rdcl)[ 3] = (u_int8_t)((bpb.rdcl) >> 030); | |||
652 | mk2(bsxbpb->infs, bpb.infs)(bsxbpb->infs)[0] = (u_int8_t)(bpb.infs), (bsxbpb->infs )[1] = (u_int8_t)((bpb.infs) >> 010); | |||
653 | mk2(bsxbpb->bkbs, bpb.bkbs)(bsxbpb->bkbs)[0] = (u_int8_t)(bpb.bkbs), (bsxbpb->bkbs )[1] = (u_int8_t)((bpb.bkbs) >> 010); | |||
654 | x1 += sizeof(struct bsxbpb); | |||
655 | } | |||
656 | bsx = (struct bsx *)(img + x1); | |||
657 | mk1(bsx->sig, 0x29)(bsx->sig) = (u_int8_t)(0x29); | |||
658 | if (o.volume_id_set) | |||
659 | x = o.volume_id; | |||
660 | else | |||
661 | x = (((u_int)(1 + tm->tm_mon) << 8 | | |||
662 | (u_int)tm->tm_mday) + | |||
663 | ((u_int)tm->tm_sec << 8 | | |||
664 | (u_int)(tv.tv_usec / 10))) << 16 | | |||
665 | ((u_int)(1900 + tm->tm_year) + | |||
666 | ((u_int)tm->tm_hour << 8 | | |||
667 | (u_int)tm->tm_min)); | |||
668 | mk4(bsx->volid, x)(bsx->volid)[0] = (u_int8_t)(x), (bsx->volid)[1] = (u_int8_t )((x) >> 010), (bsx->volid)[2] = (u_int8_t)((x) >> 020), (bsx->volid)[3] = (u_int8_t)((x) >> 030); | |||
669 | mklabel(bsx->label, o.volume_label ? o.volume_label : "NO NAME"); | |||
670 | snprintf(buf, sizeof(buf), "FAT%u", o.fat_type); | |||
671 | setstr(bsx->type, buf, sizeof(bsx->type)); | |||
672 | if (!o.bootstrap) { | |||
673 | x1 += sizeof(struct bsx); | |||
674 | bs = (struct bs *)img; | |||
675 | mk1(bs->jmp[0], 0xeb)(bs->jmp[0]) = (u_int8_t)(0xeb); | |||
676 | mk1(bs->jmp[1], x1 - 2)(bs->jmp[1]) = (u_int8_t)(x1 - 2); | |||
677 | mk1(bs->jmp[2], 0x90)(bs->jmp[2]) = (u_int8_t)(0x90); | |||
678 | setstr(bs->oem, o.OEM_string ? o.OEM_string : "NetBSD", | |||
679 | sizeof(bs->oem)); | |||
680 | memcpy(img + x1, bootcode, sizeof(bootcode)); | |||
681 | mk2(img + MINBPS - 2, DOSMAGIC)(img + 512 - 2)[0] = (u_int8_t)(0xaa55), (img + 512 - 2)[1] = (u_int8_t)((0xaa55) >> 010); | |||
682 | } | |||
683 | } else if (o.fat_type == 32 && bpb.infs != MAXU160xffff && | |||
684 | (lsn == bpb.infs || | |||
685 | (bpb.bkbs != MAXU160xffff && | |||
686 | lsn == bpb.bkbs + bpb.infs))) { | |||
687 | mk4(img, 0x41615252)(img)[0] = (u_int8_t)(0x41615252), (img)[1] = (u_int8_t)((0x41615252 ) >> 010), (img)[2] = (u_int8_t)((0x41615252) >> 020 ), (img)[3] = (u_int8_t)((0x41615252) >> 030); | |||
688 | mk4(img + MINBPS - 28, 0x61417272)(img + 512 - 28)[0] = (u_int8_t)(0x61417272), (img + 512 - 28 )[1] = (u_int8_t)((0x61417272) >> 010), (img + 512 - 28 )[2] = (u_int8_t)((0x61417272) >> 020), (img + 512 - 28 )[3] = (u_int8_t)((0x61417272) >> 030); | |||
689 | mk4(img + MINBPS - 24, 0xffffffff)(img + 512 - 24)[0] = (u_int8_t)(0xffffffff), (img + 512 - 24 )[1] = (u_int8_t)((0xffffffff) >> 010), (img + 512 - 24 )[2] = (u_int8_t)((0xffffffff) >> 020), (img + 512 - 24 )[3] = (u_int8_t)((0xffffffff) >> 030); | |||
690 | mk4(img + MINBPS - 20, 0xffffffff)(img + 512 - 20)[0] = (u_int8_t)(0xffffffff), (img + 512 - 20 )[1] = (u_int8_t)((0xffffffff) >> 010), (img + 512 - 20 )[2] = (u_int8_t)((0xffffffff) >> 020), (img + 512 - 20 )[3] = (u_int8_t)((0xffffffff) >> 030); | |||
691 | mk2(img + MINBPS - 2, DOSMAGIC)(img + 512 - 2)[0] = (u_int8_t)(0xaa55), (img + 512 - 2)[1] = (u_int8_t)((0xaa55) >> 010); | |||
692 | } else if (lsn >= bpb.res && lsn < dir && | |||
693 | !((lsn - bpb.res) % | |||
694 | (bpb.spf ? bpb.spf : bpb.bspf))) { | |||
695 | mk1(img[0], bpb.mid)(img[0]) = (u_int8_t)(bpb.mid); | |||
696 | for (x = 1; x < o.fat_type * (o.fat_type == 32 ? 3U : 2U) / 8U; x++) | |||
697 | mk1(img[x], o.fat_type == 32 && x % 4 == 3 ? 0x0f : 0xff)(img[x]) = (u_int8_t)(o.fat_type == 32 && x % 4 == 3 ? 0x0f : 0xff); | |||
698 | } else if (lsn == dir && o.volume_label) { | |||
699 | de = (struct de *)img; | |||
700 | mklabel(de->namext, o.volume_label); | |||
701 | mk1(de->attr, 050)(de->attr) = (u_int8_t)(050); | |||
702 | x = (u_int)tm->tm_hour << 11 | | |||
703 | (u_int)tm->tm_min << 5 | | |||
704 | (u_int)tm->tm_sec >> 1; | |||
705 | mk2(de->time, x)(de->time)[0] = (u_int8_t)(x), (de->time)[1] = (u_int8_t )((x) >> 010); | |||
706 | x = (u_int)(tm->tm_year - 80) << 9 | | |||
707 | (u_int)(tm->tm_mon + 1) << 5 | | |||
708 | (u_int)tm->tm_mday; | |||
709 | mk2(de->date, x)(de->date)[0] = (u_int8_t)(x), (de->date)[1] = (u_int8_t )((x) >> 010); | |||
710 | } | |||
711 | if ((n = write(fd, img, bpb.bps)) == -1) { | |||
712 | warn("%s", fname); | |||
713 | return -1; | |||
714 | } | |||
715 | if ((size_t)n != bpb.bps) { | |||
716 | warnx("%s: can't write sector %u", fname, lsn); | |||
717 | return -1; | |||
718 | } | |||
719 | } | |||
720 | return 0; | |||
721 | } | |||
722 | ||||
723 | ||||
724 | /* | |||
725 | * Get a standard format. | |||
726 | */ | |||
727 | static int | |||
728 | getstdfmt(const char *fmt, struct bpb *bpb) | |||
729 | { | |||
730 | u_int x, i; | |||
731 | ||||
732 | x = sizeof(stdfmt) / sizeof(stdfmt[0]); | |||
733 | for (i = 0; i < x && strcmp(fmt, stdfmt[i].name); i++); | |||
734 | if (i == x) { | |||
735 | warnx("%s: unknown standard format", fmt); | |||
736 | return -1; | |||
737 | } | |||
738 | *bpb = stdfmt[i].bpb; | |||
739 | return 0; | |||
740 | } | |||
741 | ||||
742 | /* | |||
743 | * Get disk slice, partition, and geometry information. | |||
744 | */ | |||
745 | static int | |||
746 | getbpbinfo(int fd, const char *fname, const char *dtype, int iflag, | |||
747 | struct bpb *bpb, int create) | |||
748 | { | |||
749 | const char *s1, *s2; | |||
750 | int part; | |||
751 | ||||
752 | part = -1; | |||
753 | s1 = fname; | |||
754 | if ((s2 = strrchr(s1, '/'))) | |||
755 | s1 = s2 + 1; | |||
756 | for (s2 = s1; *s2 && !isdigit((unsigned char)*s2); s2++); | |||
757 | if (!*s2 || s2 == s1) | |||
758 | s2 = NULL((void *)0); | |||
759 | else | |||
760 | while (isdigit((unsigned char)*++s2)); | |||
761 | s1 = s2; | |||
762 | ||||
763 | if (((part != -1) && ((!iflag && part != -1) || !bpb->bsec)) || | |||
764 | !bpb->bps || !bpb->spt || !bpb->hds) { | |||
765 | u_int sector_size; | |||
766 | u_int nsectors; | |||
767 | u_int ntracks; | |||
768 | u_int size; | |||
769 | { | |||
770 | struct stat st; | |||
771 | ||||
772 | if (fstat(fd, &st) == -1) { | |||
773 | warnx("Can't get disk size for `%s'", fname); | |||
774 | return -1; | |||
775 | } | |||
776 | /* create a fake geometry for a file image */ | |||
777 | sector_size = 512; | |||
778 | nsectors = 63; | |||
779 | ntracks = 255; | |||
780 | size = st.st_size / sector_size; | |||
781 | } | |||
782 | if (!bpb->bps) { | |||
783 | if (ckgeom(fname, sector_size, "bytes/sector") == -1) | |||
784 | return -1; | |||
785 | bpb->bps = sector_size; | |||
786 | } | |||
787 | ||||
788 | if (nsectors > 63) { | |||
789 | /* | |||
790 | * The kernel doesn't accept BPB with spt > 63. | |||
791 | * (see sys/fs/msdosfs/msdosfs_vfsops.c:msdosfs_mountfs()) | |||
792 | * If values taken from disklabel don't match these | |||
793 | * restrictions, use popular BIOS default values instead. | |||
794 | */ | |||
795 | nsectors = 63; | |||
796 | } | |||
797 | if (!bpb->spt) { | |||
798 | if (ckgeom(fname, nsectors, "sectors/track") == -1) | |||
799 | return -1; | |||
800 | bpb->spt = nsectors; | |||
801 | } | |||
802 | if (!bpb->hds) { | |||
803 | if (ckgeom(fname, ntracks, "drive heads") == -1) | |||
804 | return -1; | |||
805 | bpb->hds = ntracks; | |||
806 | } | |||
807 | if (!bpb->bsec) | |||
808 | bpb->bsec = size; | |||
809 | } | |||
810 | return 0; | |||
811 | } | |||
812 | ||||
813 | /* | |||
814 | * Print out BPB values. | |||
815 | */ | |||
816 | static void | |||
817 | print_bpb(struct bpb *bpb) | |||
818 | { | |||
819 | printf("bps=%u spc=%u res=%u nft=%u", bpb->bps, bpb->spc, bpb->res, | |||
820 | bpb->nft); | |||
821 | if (bpb->rde) | |||
822 | printf(" rde=%u", bpb->rde); | |||
823 | if (bpb->sec) | |||
824 | printf(" sec=%u", bpb->sec); | |||
825 | printf(" mid=%#x", bpb->mid); | |||
826 | if (bpb->spf) | |||
827 | printf(" spf=%u", bpb->spf); | |||
828 | printf(" spt=%u hds=%u hid=%u", bpb->spt, bpb->hds, bpb->hid); | |||
829 | if (bpb->bsec) | |||
830 | printf(" bsec=%u", bpb->bsec); | |||
831 | if (!bpb->spf) { | |||
832 | printf(" bspf=%u rdcl=%u", bpb->bspf, bpb->rdcl); | |||
833 | printf(" infs="); | |||
834 | printf(bpb->infs == MAXU160xffff ? "%#x" : "%u", bpb->infs); | |||
835 | printf(" bkbs="); | |||
836 | printf(bpb->bkbs == MAXU160xffff ? "%#x" : "%u", bpb->bkbs); | |||
837 | } | |||
838 | printf("\n"); | |||
839 | } | |||
840 | ||||
841 | /* | |||
842 | * Check a disk geometry value. | |||
843 | */ | |||
844 | static int | |||
845 | ckgeom(const char *fname, u_int val, const char *msg) | |||
846 | { | |||
847 | if (!val) { | |||
848 | warnx("%s: no default %s", fname, msg); | |||
849 | return -1; | |||
850 | } | |||
851 | if (val > MAXU160xffff) { | |||
852 | warnx("%s: illegal %s", fname, msg); | |||
853 | return -1; | |||
854 | } | |||
855 | return 0; | |||
856 | } | |||
857 | /* | |||
858 | * Check a volume label. | |||
859 | */ | |||
860 | static int | |||
861 | oklabel(const char *src) | |||
862 | { | |||
863 | int c, i; | |||
864 | ||||
865 | for (i = 0; i <= 11; i++) { | |||
866 | c = (u_char)*src++; | |||
867 | if (c < ' ' + !i || strchr("\"*+,./:;<=>?[\\]|", c)) | |||
868 | break; | |||
869 | } | |||
870 | return i && !c; | |||
871 | } | |||
872 | ||||
873 | /* | |||
874 | * Make a volume label. | |||
875 | */ | |||
876 | static void | |||
877 | mklabel(u_int8_t *dest, const char *src) | |||
878 | { | |||
879 | int c, i; | |||
880 | ||||
881 | for (i = 0; i < 11; i++) { | |||
882 | c = *src ? toupper((unsigned char)*src++) : ' '; | |||
883 | *dest++ = !i && c == '\xe5' ? 5 : c; | |||
884 | } | |||
885 | } | |||
886 | ||||
887 | /* | |||
888 | * Copy string, padding with spaces. | |||
889 | */ | |||
890 | static void | |||
891 | setstr(u_int8_t *dest, const char *src, size_t len) | |||
892 | { | |||
893 | while (len--) | |||
894 | *dest++ = *src ? *src++ : ' '; | |||
895 | } | |||
896 | ||||
897 | static void | |||
898 | infohandler(int sig) | |||
899 | { | |||
900 | got_siginfo = 1; | |||
901 | } |