1 /*
2 * Copyright (c) 1998 Robert Nordier
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
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
13 * distribution.
14 *
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.
26 */
27
28 #ifndef lint
29 static const char rcsid[] =
30 "$FreeBSD$";
31 #endif /* not lint */
32
33 #include <sys/param.h>
34 #ifdef MAKEFS
35 /* In the makefs case we only want struct disklabel */
36 #include <sys/disk/bsd.h>
37 #elif defined(__linux__)
38 #include <linux/fs.h>
39 #include <linux/hdreg.h>
40 #include <sys/ioctl.h>
41 #elif defined(__APPLE__)
42 /* Nothing. */
43 #else
44 #include <sys/fdcio.h>
45 #include <sys/disk.h>
46 #include <sys/disklabel.h>
47 #include <sys/mount.h>
48 #endif
49 #include <sys/stat.h>
50 #if __has_include(<sys/sysctl.h>)
51 #include <sys/sysctl.h>
52 #endif
53 #include <sys/time.h>
54
55 #include <assert.h>
56 #include <ctype.h>
57 #include <err.h>
58 #include <errno.h>
59 #include <fcntl.h>
60 #include <inttypes.h>
61 #include <paths.h>
62 #include <signal.h>
63 #include <stdio.h>
64 #include <stdlib.h>
65 #include <string.h>
66 #include <time.h>
67 #include <unistd.h>
68
69 #include "mkfs_msdos.h"
70
71 #define MAXU16 0xffff /* maximum unsigned 16-bit quantity */
72 #define BPN 4 /* bits per nibble */
73 #define NPB 2 /* nibbles per byte */
74
75 #define DOSMAGIC 0xaa55 /* DOS magic number */
76 #define MINBPS 512 /* minimum bytes per sector */
77 #define MAXBPS 4096 /* maximum bytes per sector */
78 #define MAXSPC 128 /* maximum sectors per cluster */
79 #define MAXNFT 16 /* maximum number of FATs */
80 #define DEFBLK 4096 /* default block size */
81 #define DEFBLK16 2048 /* default block size FAT16 */
82 #define DEFRDE 512 /* default root directory entries */
83 #define RESFTE 2 /* reserved FAT entries */
84 #define MINCLS12 1U /* minimum FAT12 clusters */
85 #define MINCLS16 0xff5U /* minimum FAT16 clusters */
86 #define MINCLS32 0xfff5U /* minimum FAT32 clusters */
87 #define MAXCLS12 0xff4U /* maximum FAT12 clusters */
88 #define MAXCLS16 0xfff4U /* maximum FAT16 clusters */
89 #define MAXCLS32 0xffffff4U /* maximum FAT32 clusters */
90
91 #define mincls(fat) ((fat) == 12 ? MINCLS12 : \
92 (fat) == 16 ? MINCLS16 : \
93 MINCLS32)
94
95 #define maxcls(fat) ((fat) == 12 ? MAXCLS12 : \
96 (fat) == 16 ? MAXCLS16 : \
97 MAXCLS32)
98
99 #define mk1(p, x) \
100 (p) = (u_int8_t)(x)
101
102 #define mk2(p, x) \
103 (p)[0] = (u_int8_t)(x), \
104 (p)[1] = (u_int8_t)((x) >> 010)
105
106 #define mk4(p, x) \
107 (p)[0] = (u_int8_t)(x), \
108 (p)[1] = (u_int8_t)((x) >> 010), \
109 (p)[2] = (u_int8_t)((x) >> 020), \
110 (p)[3] = (u_int8_t)((x) >> 030)
111
112 struct bs {
113 u_int8_t bsJump[3]; /* bootstrap entry point */
114 u_int8_t bsOemName[8]; /* OEM name and version */
115 } __packed;
116
117 struct bsbpb {
118 u_int8_t bpbBytesPerSec[2]; /* bytes per sector */
119 u_int8_t bpbSecPerClust; /* sectors per cluster */
120 u_int8_t bpbResSectors[2]; /* reserved sectors */
121 u_int8_t bpbFATs; /* number of FATs */
122 u_int8_t bpbRootDirEnts[2]; /* root directory entries */
123 u_int8_t bpbSectors[2]; /* total sectors */
124 u_int8_t bpbMedia; /* media descriptor */
125 u_int8_t bpbFATsecs[2]; /* sectors per FAT */
126 u_int8_t bpbSecPerTrack[2]; /* sectors per track */
127 u_int8_t bpbHeads[2]; /* drive heads */
128 u_int8_t bpbHiddenSecs[4]; /* hidden sectors */
129 u_int8_t bpbHugeSectors[4]; /* big total sectors */
130 } __packed;
131
132 struct bsxbpb {
133 u_int8_t bpbBigFATsecs[4]; /* big sectors per FAT */
134 u_int8_t bpbExtFlags[2]; /* FAT control flags */
135 u_int8_t bpbFSVers[2]; /* file system version */
136 u_int8_t bpbRootClust[4]; /* root directory start cluster */
137 u_int8_t bpbFSInfo[2]; /* file system info sector */
138 u_int8_t bpbBackup[2]; /* backup boot sector */
139 u_int8_t bpbReserved[12]; /* reserved */
140 } __packed;
141
142 struct bsx {
143 u_int8_t exDriveNumber; /* drive number */
144 u_int8_t exReserved1; /* reserved */
145 u_int8_t exBootSignature; /* extended boot signature */
146 u_int8_t exVolumeID[4]; /* volume ID number */
147 u_int8_t exVolumeLabel[11]; /* volume label */
148 u_int8_t exFileSysType[8]; /* file system type */
149 } __packed;
150
151 struct de {
152 u_int8_t deName[11]; /* name and extension */
153 u_int8_t deAttributes; /* attributes */
154 u_int8_t rsvd[10]; /* reserved */
155 u_int8_t deMTime[2]; /* last-modified time */
156 u_int8_t deMDate[2]; /* last-modified date */
157 u_int8_t deStartCluster[2]; /* starting cluster */
158 u_int8_t deFileSize[4]; /* size */
159 } __packed;
160
161 struct bpb {
162 u_int bpbBytesPerSec; /* bytes per sector */
163 u_int bpbSecPerClust; /* sectors per cluster */
164 u_int bpbResSectors; /* reserved sectors */
165 u_int bpbFATs; /* number of FATs */
166 u_int bpbRootDirEnts; /* root directory entries */
167 u_int bpbSectors; /* total sectors */
168 u_int bpbMedia; /* media descriptor */
169 u_int bpbFATsecs; /* sectors per FAT */
170 u_int bpbSecPerTrack; /* sectors per track */
171 u_int bpbHeads; /* drive heads */
172 u_int bpbHiddenSecs; /* hidden sectors */
173 u_int bpbHugeSectors; /* big total sectors */
174 u_int bpbBigFATsecs; /* big sectors per FAT */
175 u_int bpbRootClust; /* root directory start cluster */
176 u_int bpbFSInfo; /* file system info sector */
177 u_int bpbBackup; /* backup boot sector */
178 };
179
180 #define BPBGAP 0, 0, 0, 0, 0, 0
181
182 static struct {
183 const char *name;
184 struct bpb bpb;
185 } const stdfmt[] = {
186 {"160", {512, 1, 1, 2, 64, 320, 0xfe, 1, 8, 1, BPBGAP}},
187 {"180", {512, 1, 1, 2, 64, 360, 0xfc, 2, 9, 1, BPBGAP}},
188 {"320", {512, 2, 1, 2, 112, 640, 0xff, 1, 8, 2, BPBGAP}},
189 {"360", {512, 2, 1, 2, 112, 720, 0xfd, 2, 9, 2, BPBGAP}},
190 {"640", {512, 2, 1, 2, 112, 1280, 0xfb, 2, 8, 2, BPBGAP}},
191 {"720", {512, 2, 1, 2, 112, 1440, 0xf9, 3, 9, 2, BPBGAP}},
192 {"1200", {512, 1, 1, 2, 224, 2400, 0xf9, 7, 15, 2, BPBGAP}},
193 {"1232", {1024,1, 1, 2, 192, 1232, 0xfe, 2, 8, 2, BPBGAP}},
194 {"1440", {512, 1, 1, 2, 224, 2880, 0xf0, 9, 18, 2, BPBGAP}},
195 {"2880", {512, 2, 1, 2, 240, 5760, 0xf0, 9, 36, 2, BPBGAP}}
196 };
197
198 static const u_int8_t bootcode[] = {
199 0xfa, /* cli */
200 0x31, 0xc0, /* xor ax,ax */
201 0x8e, 0xd0, /* mov ss,ax */
202 0xbc, 0x00, 0x7c, /* mov sp,7c00h */
203 0xfb, /* sti */
204 0x8e, 0xd8, /* mov ds,ax */
205 0xe8, 0x00, 0x00, /* call $ + 3 */
206 0x5e, /* pop si */
207 0x83, 0xc6, 0x19, /* add si,+19h */
208 0xbb, 0x07, 0x00, /* mov bx,0007h */
209 0xfc, /* cld */
210 0xac, /* lodsb */
211 0x84, 0xc0, /* test al,al */
212 0x74, 0x06, /* jz $ + 8 */
213 0xb4, 0x0e, /* mov ah,0eh */
214 0xcd, 0x10, /* int 10h */
215 0xeb, 0xf5, /* jmp $ - 9 */
216 0x30, 0xe4, /* xor ah,ah */
217 0xcd, 0x16, /* int 16h */
218 0xcd, 0x19, /* int 19h */
219 0x0d, 0x0a,
220 'N', 'o', 'n', '-', 's', 'y', 's', 't',
221 'e', 'm', ' ', 'd', 'i', 's', 'k',
222 0x0d, 0x0a,
223 'P', 'r', 'e', 's', 's', ' ', 'a', 'n',
224 'y', ' ', 'k', 'e', 'y', ' ', 't', 'o',
225 ' ', 'r', 'e', 'b', 'o', 'o', 't',
226 0x0d, 0x0a,
227 0
228 };
229
230 static volatile sig_atomic_t got_siginfo;
231 static void infohandler(int);
232
233 static int check_mounted(const char *, mode_t);
234 static ssize_t getchunksize(void);
235 static int getstdfmt(const char *, struct bpb *);
236 static int getdiskinfo(int, const char *, const char *, int, struct bpb *);
237 static void print_bpb(struct bpb *);
238 static int ckgeom(const char *, u_int, const char *);
239 static void mklabel(u_int8_t *, const char *);
240 static int oklabel(const char *);
241 static void setstr(u_int8_t *, const char *, size_t);
242
243 int
mkfs_msdos(const char * fname,const char * dtype,const struct msdos_options * op)244 mkfs_msdos(const char *fname, const char *dtype, const struct msdos_options *op)
245 {
246 char buf[MAXPATHLEN];
247 struct sigaction si_sa;
248 struct stat sb;
249 struct timeval tv;
250 struct bpb bpb;
251 struct tm *tm;
252 struct bs *bs;
253 struct bsbpb *bsbpb;
254 struct bsxbpb *bsxbpb;
255 struct bsx *bsx;
256 struct de *de;
257 u_int8_t *img;
258 u_int8_t *physbuf, *physbuf_end;
259 const char *bname;
260 ssize_t n;
261 time_t now;
262 u_int fat, bss, rds, cls, dir, lsn, x, x1, x2;
263 u_int extra_res, alignment, saved_x, attempts=0;
264 bool set_res, set_spf, set_spc;
265 int fd, fd1, rv;
266 struct msdos_options o = *op;
267 ssize_t chunksize;
268
269 physbuf = NULL;
270 rv = -1;
271 fd = fd1 = -1;
272
273 if (o.block_size && o.sectors_per_cluster) {
274 warnx("Cannot specify both block size and sectors per cluster");
275 goto done;
276 }
277 if (o.OEM_string && strlen(o.OEM_string) > 8) {
278 warnx("%s: bad OEM string", o.OEM_string);
279 goto done;
280 }
281 if (o.create_size) {
282 if (o.no_create) {
283 warnx("create (-C) is incompatible with -N");
284 goto done;
285 }
286 fd = open(fname, O_RDWR | O_CREAT | O_TRUNC, 0644);
287 if (fd == -1) {
288 warnx("failed to create %s", fname);
289 goto done;
290 }
291 if (ftruncate(fd, o.create_size)) {
292 warnx("failed to initialize %jd bytes", (intmax_t)o.create_size);
293 goto done;
294 }
295 } else if ((fd = open(fname, o.no_create ? O_RDONLY : O_RDWR)) == -1) {
296 warn("%s", fname);
297 goto done;
298 }
299 if (fstat(fd, &sb)) {
300 warn("%s", fname);
301 goto done;
302 }
303 if (o.create_size) {
304 if (!S_ISREG(sb.st_mode))
305 warnx("warning, %s is not a regular file", fname);
306 } else {
307 #ifdef MAKEFS
308 errx(1, "o.create_size must be set!");
309 #else
310 if (!S_ISCHR(sb.st_mode))
311 warnx("warning, %s is not a character device", fname);
312 #endif
313 }
314 #ifndef MAKEFS
315 if (!o.no_create)
316 if (check_mounted(fname, sb.st_mode) == -1)
317 goto done;
318 #endif
319 if (o.offset && o.offset != lseek(fd, o.offset, SEEK_SET)) {
320 warnx("cannot seek to %jd", (intmax_t)o.offset);
321 goto done;
322 }
323 memset(&bpb, 0, sizeof(bpb));
324 if (o.floppy) {
325 if (getstdfmt(o.floppy, &bpb) == -1)
326 goto done;
327 bpb.bpbHugeSectors = bpb.bpbSectors;
328 bpb.bpbSectors = 0;
329 bpb.bpbBigFATsecs = bpb.bpbFATsecs;
330 bpb.bpbFATsecs = 0;
331 }
332 if (o.drive_heads)
333 bpb.bpbHeads = o.drive_heads;
334 if (o.sectors_per_track)
335 bpb.bpbSecPerTrack = o.sectors_per_track;
336 if (o.bytes_per_sector)
337 bpb.bpbBytesPerSec = o.bytes_per_sector;
338 if (o.size)
339 bpb.bpbHugeSectors = o.size;
340 if (o.hidden_sectors_set)
341 bpb.bpbHiddenSecs = o.hidden_sectors;
342 if (!(o.floppy || (o.drive_heads && o.sectors_per_track &&
343 o.bytes_per_sector && o.size && o.hidden_sectors_set))) {
344 if (getdiskinfo(fd, fname, dtype, o.hidden_sectors_set, &bpb) == -1)
345 goto done;
346 bpb.bpbHugeSectors -= (o.offset / bpb.bpbBytesPerSec);
347 if (bpb.bpbSecPerClust == 0) { /* set defaults */
348 if (bpb.bpbHugeSectors <= 6000) /* about 3MB -> 512 bytes */
349 bpb.bpbSecPerClust = 1;
350 else if (bpb.bpbHugeSectors <= (1<<17)) /* 64M -> 4k */
351 bpb.bpbSecPerClust = 8;
352 else if (bpb.bpbHugeSectors <= (1<<19)) /* 256M -> 8k */
353 bpb.bpbSecPerClust = 16;
354 else if (bpb.bpbHugeSectors <= (1<<21)) /* 1G -> 16k */
355 bpb.bpbSecPerClust = 32;
356 else
357 bpb.bpbSecPerClust = 64; /* otherwise 32k */
358 }
359 }
360 if (bpb.bpbBytesPerSec < MINBPS ||
361 bpb.bpbBytesPerSec > MAXBPS ||
362 !powerof2(bpb.bpbBytesPerSec)) {
363 warnx("Invalid bytes/sector (%u): must be 512, 1024, 2048 or 4096",
364 bpb.bpbBytesPerSec);
365 goto done;
366 }
367
368 if (o.volume_label && !oklabel(o.volume_label)) {
369 warnx("%s: bad volume label", o.volume_label);
370 goto done;
371 }
372 if (!(fat = o.fat_type)) {
373 if (o.floppy)
374 fat = 12;
375 else if (!o.directory_entries && (o.info_sector || o.backup_sector))
376 fat = 32;
377 }
378 if ((fat == 32 && o.directory_entries) || (fat != 32 && (o.info_sector || o.backup_sector))) {
379 warnx("-%c is not a legal FAT%s option",
380 fat == 32 ? 'e' : o.info_sector ? 'i' : 'k',
381 fat == 32 ? "32" : "12/16");
382 goto done;
383 }
384 if (o.floppy && fat == 32)
385 bpb.bpbRootDirEnts = 0;
386 if (fat != 0 && fat != 12 && fat != 16 && fat != 32) {
387 warnx("%d: bad FAT type", fat);
388 goto done;
389 }
390
391 if (o.block_size) {
392 if (!powerof2(o.block_size)) {
393 warnx("block size (%u) is not a power of 2", o.block_size);
394 goto done;
395 }
396 if (o.block_size < bpb.bpbBytesPerSec) {
397 warnx("block size (%u) is too small; minimum is %u",
398 o.block_size, bpb.bpbBytesPerSec);
399 goto done;
400 }
401 if (o.block_size > bpb.bpbBytesPerSec * MAXSPC) {
402 warnx("block size (%u) is too large; maximum is %u",
403 o.block_size, bpb.bpbBytesPerSec * MAXSPC);
404 goto done;
405 }
406 bpb.bpbSecPerClust = o.block_size / bpb.bpbBytesPerSec;
407 }
408 if (o.sectors_per_cluster) {
409 if (!powerof2(o.sectors_per_cluster)) {
410 warnx("sectors/cluster (%u) is not a power of 2",
411 o.sectors_per_cluster);
412 goto done;
413 }
414 bpb.bpbSecPerClust = o.sectors_per_cluster;
415 }
416 if (o.reserved_sectors)
417 bpb.bpbResSectors = o.reserved_sectors;
418 if (o.num_FAT) {
419 if (o.num_FAT > MAXNFT) {
420 warnx("number of FATs (%u) is too large; maximum is %u",
421 o.num_FAT, MAXNFT);
422 goto done;
423 }
424 bpb.bpbFATs = o.num_FAT;
425 }
426 if (o.directory_entries)
427 bpb.bpbRootDirEnts = o.directory_entries;
428 if (o.media_descriptor_set) {
429 if (o.media_descriptor < 0xf0) {
430 warnx("illegal media descriptor (%#x)", o.media_descriptor);
431 goto done;
432 }
433 bpb.bpbMedia = o.media_descriptor;
434 }
435 if (o.sectors_per_fat)
436 bpb.bpbBigFATsecs = o.sectors_per_fat;
437 if (o.info_sector)
438 bpb.bpbFSInfo = o.info_sector;
439 if (o.backup_sector)
440 bpb.bpbBackup = o.backup_sector;
441 bss = 1;
442 bname = NULL;
443 fd1 = -1;
444 if (o.bootstrap) {
445 bname = o.bootstrap;
446 if (!strchr(bname, '/')) {
447 snprintf(buf, sizeof(buf), "/boot/%s", bname);
448 bname = buf;
449 }
450 if ((fd1 = open(bname, O_RDONLY)) == -1 || fstat(fd1, &sb)) {
451 warn("%s", bname);
452 goto done;
453 }
454 if (!S_ISREG(sb.st_mode) || sb.st_size % bpb.bpbBytesPerSec ||
455 sb.st_size < bpb.bpbBytesPerSec ||
456 sb.st_size > bpb.bpbBytesPerSec * MAXU16) {
457 warnx("%s: inappropriate file type or format", bname);
458 goto done;
459 }
460 bss = sb.st_size / bpb.bpbBytesPerSec;
461 }
462 if (!bpb.bpbFATs)
463 bpb.bpbFATs = 2;
464 if (!fat) {
465 if (bpb.bpbHugeSectors < (bpb.bpbResSectors ? bpb.bpbResSectors : bss) +
466 howmany((RESFTE + (bpb.bpbSecPerClust ? MINCLS16 : MAXCLS12 + 1)) *
467 (bpb.bpbSecPerClust ? 16 : 12) / BPN,
468 bpb.bpbBytesPerSec * NPB) *
469 bpb.bpbFATs +
470 howmany(bpb.bpbRootDirEnts ? bpb.bpbRootDirEnts : DEFRDE,
471 bpb.bpbBytesPerSec / sizeof(struct de)) +
472 (bpb.bpbSecPerClust ? MINCLS16 : MAXCLS12 + 1) *
473 (bpb.bpbSecPerClust ? bpb.bpbSecPerClust :
474 howmany(DEFBLK, bpb.bpbBytesPerSec)))
475 fat = 12;
476 else if (bpb.bpbRootDirEnts || bpb.bpbHugeSectors <
477 (bpb.bpbResSectors ? bpb.bpbResSectors : bss) +
478 howmany((RESFTE + MAXCLS16) * 2, bpb.bpbBytesPerSec) *
479 bpb.bpbFATs +
480 howmany(DEFRDE, bpb.bpbBytesPerSec / sizeof(struct de)) +
481 (MAXCLS16 + 1) *
482 (bpb.bpbSecPerClust ? bpb.bpbSecPerClust :
483 howmany(8192, bpb.bpbBytesPerSec)))
484 fat = 16;
485 else
486 fat = 32;
487 }
488 x = bss;
489 if (fat == 32) {
490 if (!bpb.bpbFSInfo) {
491 if (x == MAXU16 || x == bpb.bpbBackup) {
492 warnx("no room for info sector");
493 goto done;
494 }
495 bpb.bpbFSInfo = x;
496 }
497 if (bpb.bpbFSInfo != MAXU16 && x <= bpb.bpbFSInfo)
498 x = bpb.bpbFSInfo + 1;
499 if (!bpb.bpbBackup) {
500 if (x == MAXU16) {
501 warnx("no room for backup sector");
502 goto done;
503 }
504 bpb.bpbBackup = x;
505 } else if (bpb.bpbBackup != MAXU16 && bpb.bpbBackup == bpb.bpbFSInfo) {
506 warnx("backup sector would overwrite info sector");
507 goto done;
508 }
509 if (bpb.bpbBackup != MAXU16 && x <= bpb.bpbBackup)
510 x = bpb.bpbBackup + 1;
511 }
512
513 extra_res = 0;
514 alignment = 0;
515 set_res = (bpb.bpbResSectors == 0);
516 set_spf = (bpb.bpbBigFATsecs == 0);
517 set_spc = (bpb.bpbSecPerClust == 0);
518 saved_x = x;
519
520 /*
521 * Attempt to align the root directory to cluster if o.align is set.
522 * This is done by padding with reserved blocks. Note that this can
523 * cause other factors to change, which can in turn change the alignment.
524 * This should take at most 2 iterations, as increasing the reserved
525 * amount may cause the FAT size to decrease by 1, requiring another
526 * bpbFATs reserved blocks. If bpbSecPerClust changes, it will
527 * be half of its previous size, and thus will not throw off alignment.
528 */
529 do {
530 x = saved_x;
531 if (set_res)
532 bpb.bpbResSectors = ((fat == 32) ?
533 MAX(x, MAX(16384 / bpb.bpbBytesPerSec, 4)) : x) + extra_res;
534 else if (bpb.bpbResSectors < x) {
535 warnx("too few reserved sectors (need %d have %d)", x,
536 bpb.bpbResSectors);
537 goto done;
538 }
539 if (fat != 32 && !bpb.bpbRootDirEnts)
540 bpb.bpbRootDirEnts = DEFRDE;
541 rds = howmany(bpb.bpbRootDirEnts,
542 bpb.bpbBytesPerSec / sizeof(struct de));
543 if (set_spc) {
544 for (bpb.bpbSecPerClust = howmany(fat == 16 ? DEFBLK16 :
545 DEFBLK, bpb.bpbBytesPerSec);
546 bpb.bpbSecPerClust < MAXSPC && (bpb.bpbResSectors +
547 howmany((RESFTE + maxcls(fat)) * (fat / BPN),
548 bpb.bpbBytesPerSec * NPB) * bpb.bpbFATs +
549 rds +
550 (u_int64_t) (maxcls(fat) + 1) * bpb.bpbSecPerClust) <=
551 bpb.bpbHugeSectors;
552 bpb.bpbSecPerClust <<= 1)
553 continue;
554
555 }
556 if (fat != 32 && bpb.bpbBigFATsecs > MAXU16) {
557 warnx("too many sectors/FAT for FAT12/16");
558 goto done;
559 }
560 x1 = bpb.bpbResSectors + rds;
561 x = bpb.bpbBigFATsecs ? bpb.bpbBigFATsecs : 1;
562 if (x1 + (u_int64_t)x * bpb.bpbFATs > bpb.bpbHugeSectors) {
563 warnx("meta data exceeds file system size");
564 goto done;
565 }
566 x1 += x * bpb.bpbFATs;
567 x = (u_int64_t)(bpb.bpbHugeSectors - x1) * bpb.bpbBytesPerSec * NPB /
568 (bpb.bpbSecPerClust * bpb.bpbBytesPerSec * NPB +
569 fat / BPN * bpb.bpbFATs);
570 x2 = howmany((RESFTE + MIN(x, maxcls(fat))) * (fat / BPN),
571 bpb.bpbBytesPerSec * NPB);
572 if (set_spf) {
573 if (bpb.bpbBigFATsecs == 0)
574 bpb.bpbBigFATsecs = x2;
575 x1 += (bpb.bpbBigFATsecs - 1) * bpb.bpbFATs;
576 }
577 if (set_res) {
578 /* attempt to align root directory */
579 alignment = (bpb.bpbResSectors + bpb.bpbBigFATsecs * bpb.bpbFATs) %
580 bpb.bpbSecPerClust;
581 if (o.align)
582 extra_res += bpb.bpbSecPerClust - alignment;
583 }
584 attempts++;
585 } while (o.align && alignment != 0 && attempts < 2);
586 if (o.align && alignment != 0)
587 warnx("warning: Alignment failed.");
588
589 cls = (bpb.bpbHugeSectors - x1) / bpb.bpbSecPerClust;
590 x = (u_int64_t)bpb.bpbBigFATsecs * bpb.bpbBytesPerSec * NPB / (fat / BPN) -
591 RESFTE;
592 if (cls > x)
593 cls = x;
594 if (bpb.bpbBigFATsecs < x2)
595 warnx("warning: sectors/FAT limits file system to %u clusters",
596 cls);
597 if (cls < mincls(fat)) {
598 warnx("%u clusters too few clusters for FAT%u, need %u", cls, fat,
599 mincls(fat));
600 goto done;
601 }
602 if (cls > maxcls(fat)) {
603 cls = maxcls(fat);
604 bpb.bpbHugeSectors = x1 + (cls + 1) * bpb.bpbSecPerClust - 1;
605 warnx("warning: FAT type limits file system to %u sectors",
606 bpb.bpbHugeSectors);
607 }
608 printf("%s: %u sector%s in %u FAT%u cluster%s "
609 "(%u bytes/cluster)\n", fname, cls * bpb.bpbSecPerClust,
610 cls * bpb.bpbSecPerClust == 1 ? "" : "s", cls, fat,
611 cls == 1 ? "" : "s", bpb.bpbBytesPerSec * bpb.bpbSecPerClust);
612 if (!bpb.bpbMedia)
613 bpb.bpbMedia = !bpb.bpbHiddenSecs ? 0xf0 : 0xf8;
614 if (fat == 32)
615 bpb.bpbRootClust = RESFTE;
616 if (bpb.bpbHugeSectors <= MAXU16) {
617 bpb.bpbSectors = bpb.bpbHugeSectors;
618 bpb.bpbHugeSectors = 0;
619 }
620 if (fat != 32) {
621 bpb.bpbFATsecs = bpb.bpbBigFATsecs;
622 bpb.bpbBigFATsecs = 0;
623 }
624 print_bpb(&bpb);
625 if (!o.no_create) {
626 if (o.timestamp_set) {
627 tv.tv_sec = now = o.timestamp;
628 tv.tv_usec = 0;
629 tm = gmtime(&now);
630 } else {
631 gettimeofday(&tv, NULL);
632 now = tv.tv_sec;
633 tm = localtime(&now);
634 }
635
636 chunksize = getchunksize();
637 physbuf = malloc(chunksize);
638 if (physbuf == NULL) {
639 warn(NULL);
640 goto done;
641 }
642 physbuf_end = physbuf + chunksize;
643 img = physbuf;
644
645 dir = bpb.bpbResSectors + (bpb.bpbFATsecs ? bpb.bpbFATsecs :
646 bpb.bpbBigFATsecs) * bpb.bpbFATs;
647 memset(&si_sa, 0, sizeof(si_sa));
648 si_sa.sa_handler = infohandler;
649 #ifdef SIGINFO
650 if (sigaction(SIGINFO, &si_sa, NULL) == -1) {
651 warn("sigaction SIGINFO");
652 goto done;
653 }
654 #endif
655
656 for (lsn = 0; lsn < dir + (fat == 32 ? bpb.bpbSecPerClust : rds); lsn++) {
657 if (got_siginfo) {
658 fprintf(stderr,"%s: writing sector %u of %u (%u%%)\n",
659 fname, lsn,
660 (dir + (fat == 32 ? bpb.bpbSecPerClust: rds)),
661 (lsn * 100) / (dir +
662 (fat == 32 ? bpb.bpbSecPerClust: rds)));
663 got_siginfo = 0;
664 }
665 x = lsn;
666 if (o.bootstrap &&
667 fat == 32 && bpb.bpbBackup != MAXU16 &&
668 bss <= bpb.bpbBackup && x >= bpb.bpbBackup) {
669 x -= bpb.bpbBackup;
670 if (!x && lseek(fd1, o.offset, SEEK_SET)) {
671 warn("%s", bname);
672 goto done;
673 }
674 }
675 if (o.bootstrap && x < bss) {
676 if ((n = read(fd1, img, bpb.bpbBytesPerSec)) == -1) {
677 warn("%s", bname);
678 goto done;
679 }
680 if ((unsigned)n != bpb.bpbBytesPerSec) {
681 warnx("%s: can't read sector %u", bname, x);
682 goto done;
683 }
684 } else
685 memset(img, 0, bpb.bpbBytesPerSec);
686 if (!lsn ||
687 (fat == 32 && bpb.bpbBackup != MAXU16 &&
688 lsn == bpb.bpbBackup)) {
689 x1 = sizeof(struct bs);
690 bsbpb = (struct bsbpb *)(img + x1);
691 mk2(bsbpb->bpbBytesPerSec, bpb.bpbBytesPerSec);
692 mk1(bsbpb->bpbSecPerClust, bpb.bpbSecPerClust);
693 mk2(bsbpb->bpbResSectors, bpb.bpbResSectors);
694 mk1(bsbpb->bpbFATs, bpb.bpbFATs);
695 mk2(bsbpb->bpbRootDirEnts, bpb.bpbRootDirEnts);
696 mk2(bsbpb->bpbSectors, bpb.bpbSectors);
697 mk1(bsbpb->bpbMedia, bpb.bpbMedia);
698 mk2(bsbpb->bpbFATsecs, bpb.bpbFATsecs);
699 mk2(bsbpb->bpbSecPerTrack, bpb.bpbSecPerTrack);
700 mk2(bsbpb->bpbHeads, bpb.bpbHeads);
701 mk4(bsbpb->bpbHiddenSecs, bpb.bpbHiddenSecs);
702 mk4(bsbpb->bpbHugeSectors, bpb.bpbHugeSectors);
703 x1 += sizeof(struct bsbpb);
704 if (fat == 32) {
705 bsxbpb = (struct bsxbpb *)(img + x1);
706 mk4(bsxbpb->bpbBigFATsecs, bpb.bpbBigFATsecs);
707 mk2(bsxbpb->bpbExtFlags, 0);
708 mk2(bsxbpb->bpbFSVers, 0);
709 mk4(bsxbpb->bpbRootClust, bpb.bpbRootClust);
710 mk2(bsxbpb->bpbFSInfo, bpb.bpbFSInfo);
711 mk2(bsxbpb->bpbBackup, bpb.bpbBackup);
712 x1 += sizeof(struct bsxbpb);
713 }
714 bsx = (struct bsx *)(img + x1);
715 mk1(bsx->exBootSignature, 0x29);
716 if (o.volume_id_set)
717 x = o.volume_id;
718 else
719 x = (((u_int)(1 + tm->tm_mon) << 8 |
720 (u_int)tm->tm_mday) +
721 ((u_int)tm->tm_sec << 8 |
722 (u_int)(tv.tv_usec / 10))) << 16 |
723 ((u_int)(1900 + tm->tm_year) +
724 ((u_int)tm->tm_hour << 8 |
725 (u_int)tm->tm_min));
726 mk4(bsx->exVolumeID, x);
727 mklabel(bsx->exVolumeLabel, o.volume_label ? o.volume_label : "NO NAME");
728 snprintf(buf, sizeof(buf), "FAT%u", fat);
729 setstr(bsx->exFileSysType, buf, sizeof(bsx->exFileSysType));
730 if (!o.bootstrap) {
731 x1 += sizeof(struct bsx);
732 bs = (struct bs *)img;
733 mk1(bs->bsJump[0], 0xeb);
734 mk1(bs->bsJump[1], x1 - 2);
735 mk1(bs->bsJump[2], 0x90);
736 setstr(bs->bsOemName, o.OEM_string ? o.OEM_string : "BSD4.4 ",
737 sizeof(bs->bsOemName));
738 memcpy(img + x1, bootcode, sizeof(bootcode));
739 mk2(img + MINBPS - 2, DOSMAGIC);
740 }
741 } else if (fat == 32 && bpb.bpbFSInfo != MAXU16 &&
742 (lsn == bpb.bpbFSInfo ||
743 (bpb.bpbBackup != MAXU16 &&
744 lsn == bpb.bpbBackup + bpb.bpbFSInfo))) {
745 mk4(img, 0x41615252);
746 mk4(img + MINBPS - 28, 0x61417272);
747 mk4(img + MINBPS - 24, 0xffffffff);
748 mk4(img + MINBPS - 20, 0xffffffff);
749 mk2(img + MINBPS - 2, DOSMAGIC);
750 } else if (lsn >= bpb.bpbResSectors && lsn < dir &&
751 !((lsn - bpb.bpbResSectors) %
752 (bpb.bpbFATsecs ? bpb.bpbFATsecs :
753 bpb.bpbBigFATsecs))) {
754 mk1(img[0], bpb.bpbMedia);
755 for (x = 1; x < fat * (fat == 32 ? 3 : 2) / 8; x++)
756 mk1(img[x], fat == 32 && x % 4 == 3 ? 0x0f : 0xff);
757 } else if (lsn == dir && o.volume_label) {
758 de = (struct de *)img;
759 mklabel(de->deName, o.volume_label);
760 mk1(de->deAttributes, 050);
761 x = (u_int)tm->tm_hour << 11 |
762 (u_int)tm->tm_min << 5 |
763 (u_int)tm->tm_sec >> 1;
764 mk2(de->deMTime, x);
765 x = (u_int)(tm->tm_year - 80) << 9 |
766 (u_int)(tm->tm_mon + 1) << 5 |
767 (u_int)tm->tm_mday;
768 mk2(de->deMDate, x);
769 }
770 /*
771 * Issue a write of chunksize once we have collected
772 * enough sectors.
773 */
774 img += bpb.bpbBytesPerSec;
775 if (img >= physbuf_end) {
776 n = write(fd, physbuf, chunksize);
777 if (n != chunksize) {
778 warnx("%s: can't write sector %u", fname, lsn);
779 goto done;
780 }
781 img = physbuf;
782 }
783 }
784 /*
785 * Write remaining sectors, if the last write didn't end
786 * up filling a whole chunk.
787 */
788 if (img != physbuf) {
789 ssize_t tailsize = img - physbuf;
790
791 n = write(fd, physbuf, tailsize);
792 if (n != tailsize) {
793 warnx("%s: can't write sector %u", fname, lsn);
794 goto done;
795 }
796 }
797 }
798 rv = 0;
799 done:
800 free(physbuf);
801 if (fd != -1)
802 close(fd);
803 if (fd1 != -1)
804 close(fd1);
805
806 return rv;
807 }
808
809 /*
810 * return -1 with error if file system is mounted.
811 */
812 static int
check_mounted(const char * fname,mode_t mode)813 check_mounted(const char *fname, mode_t mode)
814 {
815 /*
816 * If getmntinfo() is not available (e.g. Linux) don't check. This should
817 * not be a problem since we will only be using makefs to create images.
818 */
819 #if 0 && !defined(MAKEFS)
820 struct statfs *mp;
821 const char *s1, *s2;
822 size_t len;
823 int n, r;
824
825 if (!(n = getmntinfo(&mp, MNT_NOWAIT))) {
826 warn("getmntinfo");
827 return -1;
828 }
829 len = strlen(_PATH_DEV);
830 s1 = fname;
831 if (!strncmp(s1, _PATH_DEV, len))
832 s1 += len;
833 r = S_ISCHR(mode) && s1 != fname && *s1 == 'r';
834 for (; n--; mp++) {
835 s2 = mp->f_mntfromname;
836 if (!strncmp(s2, _PATH_DEV, len))
837 s2 += len;
838 if ((r && s2 != mp->f_mntfromname && !strcmp(s1 + 1, s2)) ||
839 !strcmp(s1, s2)) {
840 warnx("%s is mounted on %s", fname, mp->f_mntonname);
841 return -1;
842 }
843 }
844 #endif
845 return 0;
846 }
847
848 /*
849 * Get optimal I/O size
850 */
851 static ssize_t
getchunksize(void)852 getchunksize(void)
853 {
854 static int chunksize;
855
856 if (chunksize != 0)
857 return ((ssize_t)chunksize);
858
859 #ifdef KERN_MAXPHYS
860 int mib[2];
861 size_t len;
862
863 mib[0] = CTL_KERN;
864 mib[1] = KERN_MAXPHYS;
865 len = sizeof(chunksize);
866
867 if (sysctl(mib, 2, &chunksize, &len, NULL, 0) == -1) {
868 warn("sysctl: KERN_MAXPHYS, using %zu", (size_t)MAXPHYS);
869 chunksize = 0;
870 }
871 #endif
872 if (chunksize == 0)
873 chunksize = MAXPHYS;
874
875 /*
876 * For better performance, we want to write larger chunks instead of
877 * individual sectors (the size can only be 512, 1024, 2048 or 4096
878 * bytes). Assert that chunksize can always hold an integer number of
879 * sectors by asserting that both are power of two numbers and the
880 * chunksize is greater than MAXBPS.
881 */
882 static_assert(powerof2(MAXBPS), "MAXBPS is not power of 2");
883 assert(powerof2(chunksize));
884 assert(chunksize > MAXBPS);
885
886 return ((ssize_t)chunksize);
887 }
888
889 /*
890 * Get a standard format.
891 */
892 static int
getstdfmt(const char * fmt,struct bpb * bpb)893 getstdfmt(const char *fmt, struct bpb *bpb)
894 {
895 u_int x, i;
896
897 x = nitems(stdfmt);
898 for (i = 0; i < x && strcmp(fmt, stdfmt[i].name); i++);
899 if (i == x) {
900 warnx("%s: unknown standard format", fmt);
901 return -1;
902 }
903 *bpb = stdfmt[i].bpb;
904 return 0;
905 }
906
907 #if 0
908 static void
909 compute_geometry_from_file(int fd, const char *fname, struct disklabel *lp)
910 {
911 struct stat st;
912 off_t ms;
913
914 if (fstat(fd, &st))
915 err(1, "cannot get disk size");
916 if (!S_ISREG(st.st_mode))
917 errx(1, "%s is not a regular file", fname);
918 ms = st.st_size;
919 lp->d_secsize = 512;
920 lp->d_nsectors = 63;
921 lp->d_ntracks = 255;
922 lp->d_secperunit = ms / lp->d_secsize;
923 }
924 #endif
925
926 /*
927 * Get disk slice, partition, and geometry information.
928 */
929 #if defined(__linux__)
getdiskinfo(int fd,const char * fname,const char * dtype,__unused int oflag,struct bpb * bpb)930 static int getdiskinfo(int fd, const char *fname, const char *dtype,
931 __unused int oflag, struct bpb *bpb)
932 {
933 if (ioctl(fd, BLKSSZGET, &bpb->bpbBytesPerSec)) {
934 err(1, "ioctl(BLKSSZGET) for bytes/sector failed");
935 }
936
937 if (ckgeom(fname, bpb->bpbBytesPerSec, "bytes/sector") == -1) return -1;
938
939 u_int64_t device_size;
940 if (ioctl(fd, BLKGETSIZE64, &device_size)) {
941 err(1, "ioctl(BLKGETSIZE64) failed");
942 }
943
944 u_int64_t sectors = device_size/bpb->bpbBytesPerSec;
945 if (sectors > UINT_MAX) {
946 errx(1, "too many sectors: %"PRIu64" (%"PRIu64" byte device, %u bytes/sector)",
947 sectors, device_size, bpb->bpbBytesPerSec);
948 }
949 bpb->bpbHugeSectors = sectors;
950
951 bpb->bpbSecPerTrack = 63;
952 if (ckgeom(fname, bpb->bpbSecPerTrack, "sectors/track") == -1) return -1;
953
954 bpb->bpbHeads = 64;
955 if (ckgeom(fname, bpb->bpbHeads, "drive heads") == -1) return -1;
956
957 return 0;
958 }
959 #elif defined(__APPLE__)
960 static int
getdiskinfo(int fd,const char * fname,const char * dtype,__unused int oflag,struct bpb * bpb)961 getdiskinfo(int fd, const char *fname, const char *dtype, __unused int oflag,
962 struct bpb *bpb) {
963 return 0;
964 }
965 #else
966 static int
getdiskinfo(int fd,const char * fname,const char * dtype,__unused int oflag,struct bpb * bpb)967 getdiskinfo(int fd, const char *fname, const char *dtype, __unused int oflag,
968 struct bpb *bpb)
969 {
970 struct disklabel *lp, dlp;
971 off_t hs = 0;
972 #ifndef MAKEFS
973 off_t ms;
974 struct fd_type type;
975
976 lp = NULL;
977
978 /* If the user specified a disk type, try to use that */
979 if (dtype != NULL) {
980 lp = getdiskbyname(dtype);
981 }
982
983 /* Maybe it's a floppy drive */
984 if (lp == NULL) {
985 if (ioctl(fd, DIOCGMEDIASIZE, &ms) == -1) {
986 /* create a fake geometry for a file image */
987 compute_geometry_from_file(fd, fname, &dlp);
988 lp = &dlp;
989 } else if (ioctl(fd, FD_GTYPE, &type) != -1) {
990 dlp.d_secsize = 128 << type.secsize;
991 dlp.d_nsectors = type.sectrac;
992 dlp.d_ntracks = type.heads;
993 dlp.d_secperunit = ms / dlp.d_secsize;
994 lp = &dlp;
995 }
996 }
997
998 /* Maybe it's a fixed drive */
999 if (lp == NULL) {
1000 if (bpb->bpbBytesPerSec)
1001 dlp.d_secsize = bpb->bpbBytesPerSec;
1002 if (bpb->bpbBytesPerSec == 0 && ioctl(fd, DIOCGSECTORSIZE,
1003 &dlp.d_secsize) == -1)
1004 err(1, "cannot get sector size");
1005
1006 dlp.d_secperunit = ms / dlp.d_secsize;
1007
1008 if (bpb->bpbSecPerTrack == 0 && ioctl(fd, DIOCGFWSECTORS,
1009 &dlp.d_nsectors) == -1) {
1010 warn("cannot get number of sectors per track");
1011 dlp.d_nsectors = 63;
1012 }
1013 if (bpb->bpbHeads == 0 &&
1014 ioctl(fd, DIOCGFWHEADS, &dlp.d_ntracks) == -1) {
1015 warn("cannot get number of heads");
1016 if (dlp.d_secperunit <= 63*1*1024)
1017 dlp.d_ntracks = 1;
1018 else if (dlp.d_secperunit <= 63*16*1024)
1019 dlp.d_ntracks = 16;
1020 else
1021 dlp.d_ntracks = 255;
1022 }
1023
1024 hs = (ms / dlp.d_secsize) - dlp.d_secperunit;
1025 lp = &dlp;
1026 }
1027 #else
1028 /* In the makefs case we only support image files: */
1029 compute_geometry_from_file(fd, fname, &dlp);
1030 lp = &dlp;
1031 #endif
1032
1033 if (bpb->bpbBytesPerSec == 0) {
1034 if (ckgeom(fname, lp->d_secsize, "bytes/sector") == -1)
1035 return -1;
1036 bpb->bpbBytesPerSec = lp->d_secsize;
1037 }
1038 if (bpb->bpbSecPerTrack == 0) {
1039 if (ckgeom(fname, lp->d_nsectors, "sectors/track") == -1)
1040 return -1;
1041 bpb->bpbSecPerTrack = lp->d_nsectors;
1042 }
1043 if (bpb->bpbHeads == 0) {
1044 if (ckgeom(fname, lp->d_ntracks, "drive heads") == -1)
1045 return -1;
1046 bpb->bpbHeads = lp->d_ntracks;
1047 }
1048 if (bpb->bpbHugeSectors == 0)
1049 bpb->bpbHugeSectors = lp->d_secperunit;
1050 if (bpb->bpbHiddenSecs == 0)
1051 bpb->bpbHiddenSecs = hs;
1052 return 0;
1053 }
1054 #endif
1055
1056 /*
1057 * Print out BPB values.
1058 */
1059 static void
print_bpb(struct bpb * bpb)1060 print_bpb(struct bpb *bpb)
1061 {
1062 printf("BytesPerSec=%u SecPerClust=%u ResSectors=%u FATs=%u",
1063 bpb->bpbBytesPerSec, bpb->bpbSecPerClust, bpb->bpbResSectors,
1064 bpb->bpbFATs);
1065 if (bpb->bpbRootDirEnts)
1066 printf(" RootDirEnts=%u", bpb->bpbRootDirEnts);
1067 if (bpb->bpbSectors)
1068 printf(" Sectors=%u", bpb->bpbSectors);
1069 printf(" Media=%#x", bpb->bpbMedia);
1070 if (bpb->bpbFATsecs)
1071 printf(" FATsecs=%u", bpb->bpbFATsecs);
1072 printf(" SecPerTrack=%u Heads=%u HiddenSecs=%u", bpb->bpbSecPerTrack,
1073 bpb->bpbHeads, bpb->bpbHiddenSecs);
1074 if (bpb->bpbHugeSectors)
1075 printf(" HugeSectors=%u", bpb->bpbHugeSectors);
1076 if (!bpb->bpbFATsecs) {
1077 printf(" FATsecs=%u RootCluster=%u", bpb->bpbBigFATsecs,
1078 bpb->bpbRootClust);
1079 printf(" FSInfo=");
1080 printf(bpb->bpbFSInfo == MAXU16 ? "%#x" : "%u", bpb->bpbFSInfo);
1081 printf(" Backup=");
1082 printf(bpb->bpbBackup == MAXU16 ? "%#x" : "%u", bpb->bpbBackup);
1083 }
1084 printf("\n");
1085 }
1086
1087 /*
1088 * Check a disk geometry value.
1089 */
1090 static int
ckgeom(const char * fname,u_int val,const char * msg)1091 ckgeom(const char *fname, u_int val, const char *msg)
1092 {
1093 if (!val) {
1094 warnx("%s: no default %s", fname, msg);
1095 return -1;
1096 }
1097 if (val > MAXU16) {
1098 warnx("%s: illegal %s %d", fname, msg, val);
1099 return -1;
1100 }
1101 return 0;
1102 }
1103
1104 /*
1105 * Check a volume label.
1106 */
1107 static int
oklabel(const char * src)1108 oklabel(const char *src)
1109 {
1110 int c, i;
1111
1112 for (i = 0; i <= 11; i++) {
1113 c = (u_char)*src++;
1114 if (c < ' ' + !i || strchr("\"*+,./:;<=>?[\\]|", c))
1115 break;
1116 }
1117 return i && !c;
1118 }
1119
1120 /*
1121 * Make a volume label.
1122 */
1123 static void
mklabel(u_int8_t * dest,const char * src)1124 mklabel(u_int8_t *dest, const char *src)
1125 {
1126 int c, i;
1127
1128 for (i = 0; i < 11; i++) {
1129 c = *src ? toupper(*src++) : ' ';
1130 *dest++ = !i && c == '\xe5' ? 5 : c;
1131 }
1132 }
1133
1134 /*
1135 * Copy string, padding with spaces.
1136 */
1137 static void
setstr(u_int8_t * dest,const char * src,size_t len)1138 setstr(u_int8_t *dest, const char *src, size_t len)
1139 {
1140 while (len--)
1141 *dest++ = *src ? *src++ : ' ';
1142 }
1143
1144 static void
infohandler(int sig __unused)1145 infohandler(int sig __unused)
1146 {
1147
1148 got_siginfo = 1;
1149 }
1150