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mkimage: Use generic code for showing an 'image type' error
[J-u-boot.git] / tools / mkimage.c
CommitLineData
5b1d7137 1/*
9d25438f
BS
2 * (C) Copyright 2008 Semihalf
3 *
89a4d6b1 4 * (C) Copyright 2000-2009
5b1d7137
WD
5 * DENX Software Engineering
6 * Wolfgang Denk, [email protected]
0c852a28 7 *
1a459660 8 * SPDX-License-Identifier: GPL-2.0+
5b1d7137
WD
9 */
10
b97a2a0a 11#include "mkimage.h"
5b1d7137 12#include <image.h>
976b38c0 13#include <version.h>
89a4d6b1
PW
14
15static void copy_file(int, const char *, int);
89a4d6b1 16
89a4d6b1 17/* parameters initialized by core will be used by the image type code */
cc7a6444 18static struct image_tool_params params = {
89a4d6b1
PW
19 .os = IH_OS_LINUX,
20 .arch = IH_ARCH_PPC,
21 .type = IH_TYPE_KERNEL,
22 .comp = IH_COMP_GZIP,
23 .dtc = MKIMAGE_DEFAULT_DTC_OPTIONS,
04387d24 24 .imagename = "",
5d898a00 25 .imagename2 = "",
89a4d6b1
PW
26};
27
30664225
SG
28static enum ih_category cur_category;
29
30static int h_compare_category_name(const void *vtype1, const void *vtype2)
31{
32 const int *type1 = vtype1;
33 const int *type2 = vtype2;
34 const char *name1 = genimg_get_cat_short_name(cur_category, *type1);
35 const char *name2 = genimg_get_cat_short_name(cur_category, *type2);
36
37 return strcmp(name1, name2);
38}
39
f24e1050 40static int show_valid_options(enum ih_category category)
30664225
SG
41{
42 int *order;
43 int count;
44 int item;
45 int i;
46
47 count = genimg_get_cat_count(category);
48 order = calloc(count, sizeof(*order));
49 if (!order)
50 return -ENOMEM;
51
52 /* Sort the names in order of short name for easier reading */
53 for (item = 0; item < count; item++)
54 order[item] = item;
55 cur_category = category;
56 qsort(order, count, sizeof(int), h_compare_category_name);
57
58 fprintf(stderr, "\nInvalid %s, supported are:\n",
59 genimg_get_cat_desc(category));
60 for (i = 0; i < count; i++) {
61 item = order[i];
62 fprintf(stderr, "\t%-15s %s\n",
63 genimg_get_cat_short_name(category, item),
64 genimg_get_cat_name(category, item));
65 }
66 fprintf(stderr, "\n");
67
68 return 0;
69}
70
15310348 71static void usage(const char *msg)
b0a487a4 72{
15310348 73 fprintf(stderr, "Error: %s\n", msg);
b0a487a4
SG
74 fprintf(stderr, "Usage: %s -l image\n"
75 " -l ==> list image header information\n",
76 params.cmdname);
77 fprintf(stderr,
78 " %s [-x] -A arch -O os -T type -C comp -a addr -e ep -n name -d data_file[:data_file...] image\n"
79 " -A ==> set architecture to 'arch'\n"
80 " -O ==> set operating system to 'os'\n"
81 " -T ==> set image type to 'type'\n"
82 " -C ==> set compression type 'comp'\n"
83 " -a ==> set load address to 'addr' (hex)\n"
84 " -e ==> set entry point to 'ep' (hex)\n"
85 " -n ==> set image name to 'name'\n"
86 " -d ==> use image data from 'datafile'\n"
87 " -x ==> set XIP (execute in place)\n",
88 params.cmdname);
89 fprintf(stderr,
7a439cad
AB
90 " %s [-D dtc_options] [-f fit-image.its|-f auto|-F] [-b <dtb> [-b <dtb>]] fit-image\n"
91 " <dtb> file is used with -f auto, it may occour multiple times.\n",
b0a487a4
SG
92 params.cmdname);
93 fprintf(stderr,
94 " -D => set all options for device tree compiler\n"
95 " -f => input filename for FIT source\n");
96#ifdef CONFIG_FIT_SIGNATURE
97 fprintf(stderr,
f8f9107d
TR
98 "Signing / verified boot options: [-E] [-k keydir] [-K dtb] [ -c <comment>] [-p addr] [-r]\n"
99 " -E => place data outside of the FIT structure\n"
b0a487a4
SG
100 " -k => set directory containing private keys\n"
101 " -K => write public keys to this .dtb file\n"
102 " -c => add comment in signature node\n"
103 " -F => re-sign existing FIT image\n"
f8f9107d 104 " -p => place external data at a static position\n"
b0a487a4
SG
105 " -r => mark keys used as 'required' in dtb\n");
106#else
107 fprintf(stderr,
108 "Signing / verified boot not supported (CONFIG_FIT_SIGNATURE undefined)\n");
109#endif
110 fprintf(stderr, " %s -V ==> print version information and exit\n",
111 params.cmdname);
112 fprintf(stderr, "Use -T to see a list of available image types\n");
113
114 exit(EXIT_FAILURE);
115}
116
fb4cce0f
SG
117static int add_content(int type, const char *fname)
118{
119 struct content_info *cont;
120
121 cont = calloc(1, sizeof(*cont));
122 if (!cont)
123 return -1;
124 cont->type = type;
125 cont->fname = fname;
126 if (params.content_tail)
127 params.content_tail->next = cont;
128 else
129 params.content_head = cont;
130 params.content_tail = cont;
131
132 return 0;
133}
134
0b443dee 135static void process_args(int argc, char **argv)
5b1d7137 136{
a2513e27 137 char *ptr;
d505a09c
SG
138 int type = IH_TYPE_INVALID;
139 char *datafile = NULL;
a02221f2
SG
140 int opt;
141
142 while ((opt = getopt(argc, argv,
f8f9107d 143 "a:A:b:cC:d:D:e:Ef:Fk:K:ln:p:O:rR:qsT:vVx")) != -1) {
a02221f2 144 switch (opt) {
07450081
SG
145 case 'a':
146 params.addr = strtoull(optarg, &ptr, 16);
147 if (*ptr) {
148 fprintf(stderr, "%s: invalid load address %s\n",
149 params.cmdname, optarg);
150 exit(EXIT_FAILURE);
151 }
a02221f2
SG
152 break;
153 case 'A':
154 params.arch = genimg_get_arch_id(optarg);
155 if (params.arch < 0)
15310348 156 usage("Invalid architecture");
a02221f2 157 break;
fb4cce0f 158 case 'b':
8edeac86 159 if (add_content(IH_TYPE_FLATDT, optarg)) {
7a439cad
AB
160 fprintf(stderr,
161 "%s: Out of memory adding content '%s'",
162 params.cmdname, optarg);
163 exit(EXIT_FAILURE);
164 }
fb4cce0f 165 break;
a02221f2
SG
166 case 'c':
167 params.comment = optarg;
168 break;
169 case 'C':
170 params.comp = genimg_get_comp_id(optarg);
171 if (params.comp < 0)
15310348 172 usage("Invalid compression type");
a02221f2 173 break;
a02221f2
SG
174 case 'd':
175 params.datafile = optarg;
176 params.dflag = 1;
177 break;
07450081
SG
178 case 'D':
179 params.dtc = optarg;
180 break;
a02221f2
SG
181 case 'e':
182 params.ep = strtoull(optarg, &ptr, 16);
183 if (*ptr) {
184 fprintf(stderr, "%s: invalid entry point %s\n",
185 params.cmdname, optarg);
186 exit(EXIT_FAILURE);
5b1d7137 187 }
a02221f2
SG
188 params.eflag = 1;
189 break;
722ebc8f
SG
190 case 'E':
191 params.external_data = true;
192 break;
a02221f2 193 case 'f':
8e35bb07
SG
194 datafile = optarg;
195 params.auto_its = !strcmp(datafile, "auto");
a02221f2
SG
196 /* no break */
197 case 'F':
198 /*
199 * The flattened image tree (FIT) format
200 * requires a flattened device tree image type
201 */
202 params.type = IH_TYPE_FLATDT;
203 params.fflag = 1;
204 break;
205 case 'k':
206 params.keydir = optarg;
207 break;
208 case 'K':
209 params.keydest = optarg;
210 break;
07450081
SG
211 case 'l':
212 params.lflag = 1;
213 break;
a02221f2
SG
214 case 'n':
215 params.imagename = optarg;
216 break;
07450081
SG
217 case 'O':
218 params.os = genimg_get_os_id(optarg);
219 if (params.os < 0)
15310348 220 usage("Invalid operating system");
07450081 221 break;
f8f9107d
TR
222 case 'p':
223 params.external_offset = strtoull(optarg, &ptr, 16);
224 if (*ptr) {
225 fprintf(stderr, "%s: invalid offset size %s\n",
226 params.cmdname, optarg);
227 exit(EXIT_FAILURE);
228 }
bd6e1420
SG
229 case 'q':
230 params.quiet = 1;
231 break;
a02221f2
SG
232 case 'r':
233 params.require_keys = 1;
234 break;
235 case 'R':
236 /*
237 * This entry is for the second configuration
238 * file, if only one is not enough.
239 */
240 params.imagename2 = optarg;
241 break;
242 case 's':
243 params.skipcpy = 1;
244 break;
07450081 245 case 'T':
d505a09c
SG
246 type = genimg_get_type_id(optarg);
247 if (type < 0) {
f24e1050 248 show_valid_options(IH_TYPE);
15310348 249 usage("Invalid image type");
07450081
SG
250 }
251 break;
a02221f2
SG
252 case 'v':
253 params.vflag++;
254 break;
255 case 'V':
256 printf("mkimage version %s\n", PLAIN_VERSION);
257 exit(EXIT_SUCCESS);
258 case 'x':
259 params.xflag++;
260 break;
261 default:
15310348 262 usage("Invalid option");
5b1d7137 263 }
5b1d7137
WD
264 }
265
8edeac86
AB
266 /* The last parameter is expected to be the imagefile */
267 if (optind < argc)
7a439cad
AB
268 params.imagefile = argv[optind];
269
d505a09c
SG
270 /*
271 * For auto-generated FIT images we need to know the image type to put
272 * in the FIT, which is separate from the file's image type (which
273 * will always be IH_TYPE_FLATDT in this case).
274 */
275 if (params.type == IH_TYPE_FLATDT) {
20deaddd 276 params.fit_image_type = type ? type : IH_TYPE_KERNEL;
3c23c0fe 277 /* For auto_its, datafile is always 'auto' */
8e35bb07
SG
278 if (!params.auto_its)
279 params.datafile = datafile;
e324a925
SG
280 else if (!params.datafile)
281 usage("Missing data file for auto-FIT (use -d)");
d505a09c
SG
282 } else if (type != IH_TYPE_INVALID) {
283 params.type = type;
284 }
285
286 if (!params.imagefile)
15310348 287 usage("Missing output filename");
0b443dee
SG
288}
289
0b443dee
SG
290int main(int argc, char **argv)
291{
292 int ifd = -1;
293 struct stat sbuf;
294 char *ptr;
295 int retval = 0;
296 struct image_type_params *tparams = NULL;
297 int pad_len = 0;
298 int dfd;
299
300 params.cmdname = *argv;
301 params.addr = 0;
302 params.ep = 0;
303
304 process_args(argc, argv);
89a4d6b1
PW
305
306 /* set tparams as per input type_id */
a93648d1 307 tparams = imagetool_get_type(params.type);
89a4d6b1
PW
308 if (tparams == NULL) {
309 fprintf (stderr, "%s: unsupported type %s\n",
310 params.cmdname, genimg_get_type_name(params.type));
311 exit (EXIT_FAILURE);
312 }
5b1d7137 313
89a4d6b1
PW
314 /*
315 * check the passed arguments parameters meets the requirements
316 * as per image type to be generated/listed
317 */
318 if (tparams->check_params)
319 if (tparams->check_params (&params))
15310348 320 usage("Bad parameters for image type");
89a4d6b1
PW
321
322 if (!params.eflag) {
323 params.ep = params.addr;
5b1d7137 324 /* If XIP, entry point must be after the U-Boot header */
89a4d6b1
PW
325 if (params.xflag)
326 params.ep += tparams->header_size;
5b1d7137
WD
327 }
328
c81296c1
PT
329 if (params.fflag){
330 if (tparams->fflag_handle)
331 /*
332 * in some cases, some additional processing needs
333 * to be done if fflag is defined
334 *
335 * For ex. fit_handle_file for Fit file support
336 */
337 retval = tparams->fflag_handle(&params);
5b1d7137 338
c81296c1
PT
339 if (retval != EXIT_SUCCESS)
340 exit (retval);
341 }
342
343 if (params.lflag || params.fflag) {
344 ifd = open (params.imagefile, O_RDONLY|O_BINARY);
345 } else {
346 ifd = open (params.imagefile,
347 O_RDWR|O_CREAT|O_TRUNC|O_BINARY, 0666);
348 }
349
350 if (ifd < 0) {
351 fprintf (stderr, "%s: Can't open %s: %s\n",
352 params.cmdname, params.imagefile,
353 strerror(errno));
354 exit (EXIT_FAILURE);
5b1d7137
WD
355 }
356
c81296c1 357 if (params.lflag || params.fflag) {
5b1d7137
WD
358 /*
359 * list header information of existing image
360 */
361 if (fstat(ifd, &sbuf) < 0) {
362 fprintf (stderr, "%s: Can't stat %s: %s\n",
89a4d6b1
PW
363 params.cmdname, params.imagefile,
364 strerror(errno));
5b1d7137
WD
365 exit (EXIT_FAILURE);
366 }
367
89a4d6b1 368 if ((unsigned)sbuf.st_size < tparams->header_size) {
5b1d7137 369 fprintf (stderr,
89a4d6b1
PW
370 "%s: Bad size: \"%s\" is not valid image\n",
371 params.cmdname, params.imagefile);
5b1d7137
WD
372 exit (EXIT_FAILURE);
373 }
374
fa956fde
MF
375 ptr = mmap(0, sbuf.st_size, PROT_READ, MAP_SHARED, ifd, 0);
376 if (ptr == MAP_FAILED) {
5b1d7137 377 fprintf (stderr, "%s: Can't read %s: %s\n",
89a4d6b1
PW
378 params.cmdname, params.imagefile,
379 strerror(errno));
5b1d7137
WD
380 exit (EXIT_FAILURE);
381 }
382
89a4d6b1
PW
383 /*
384 * scan through mkimage registry for all supported image types
385 * and verify the input image file header for match
386 * Print the image information for matched image type
387 * Returns the error code if not matched
388 */
0ca6691c
GMF
389 retval = imagetool_verify_print_header(ptr, &sbuf,
390 tparams, &params);
5b1d7137 391
5b1d7137
WD
392 (void) munmap((void *)ptr, sbuf.st_size);
393 (void) close (ifd);
394
f7644c0b 395 exit (retval);
5b1d7137
WD
396 }
397
34633141 398 if ((params.type != IH_TYPE_MULTI) && (params.type != IH_TYPE_SCRIPT)) {
6ae6e160
PDS
399 dfd = open(params.datafile, O_RDONLY | O_BINARY);
400 if (dfd < 0) {
401 fprintf(stderr, "%s: Can't open %s: %s\n",
402 params.cmdname, params.datafile,
403 strerror(errno));
404 exit(EXIT_FAILURE);
405 }
92a655c3 406
6ae6e160
PDS
407 if (fstat(dfd, &sbuf) < 0) {
408 fprintf(stderr, "%s: Can't stat %s: %s\n",
409 params.cmdname, params.datafile,
410 strerror(errno));
411 exit(EXIT_FAILURE);
412 }
92a655c3 413
6ae6e160
PDS
414 params.file_size = sbuf.st_size + tparams->header_size;
415 close(dfd);
416 }
92a655c3 417
5b1d7137 418 /*
f0662105
SB
419 * In case there an header with a variable
420 * length will be added, the corresponding
421 * function is called. This is responsible to
422 * allocate memory for the header itself.
5b1d7137 423 */
f0662105 424 if (tparams->vrec_header)
9bac0bb3 425 pad_len = tparams->vrec_header(&params, tparams);
f0662105
SB
426 else
427 memset(tparams->hdr, 0, tparams->header_size);
5b1d7137 428
89a4d6b1
PW
429 if (write(ifd, tparams->hdr, tparams->header_size)
430 != tparams->header_size) {
5b1d7137 431 fprintf (stderr, "%s: Write error on %s: %s\n",
89a4d6b1 432 params.cmdname, params.imagefile, strerror(errno));
5b1d7137
WD
433 exit (EXIT_FAILURE);
434 }
435
d1be8f92
CR
436 if (!params.skipcpy) {
437 if (params.type == IH_TYPE_MULTI ||
438 params.type == IH_TYPE_SCRIPT) {
439 char *file = params.datafile;
440 uint32_t size;
441
442 for (;;) {
443 char *sep = NULL;
444
445 if (file) {
446 if ((sep = strchr(file, ':')) != NULL) {
447 *sep = '\0';
448 }
449
450 if (stat (file, &sbuf) < 0) {
451 fprintf (stderr, "%s: Can't stat %s: %s\n",
452 params.cmdname, file, strerror(errno));
453 exit (EXIT_FAILURE);
454 }
455 size = cpu_to_uimage (sbuf.st_size);
456 } else {
457 size = 0;
5b1d7137
WD
458 }
459
d1be8f92
CR
460 if (write(ifd, (char *)&size, sizeof(size)) != sizeof(size)) {
461 fprintf (stderr, "%s: Write error on %s: %s\n",
462 params.cmdname, params.imagefile,
463 strerror(errno));
5b1d7137
WD
464 exit (EXIT_FAILURE);
465 }
5b1d7137 466
d1be8f92
CR
467 if (!file) {
468 break;
469 }
5b1d7137 470
d1be8f92
CR
471 if (sep) {
472 *sep = ':';
473 file = sep + 1;
474 } else {
475 file = NULL;
476 }
5b1d7137
WD
477 }
478
d1be8f92 479 file = params.datafile;
5b1d7137 480
d1be8f92
CR
481 for (;;) {
482 char *sep = strchr(file, ':');
483 if (sep) {
484 *sep = '\0';
485 copy_file (ifd, file, 1);
486 *sep++ = ':';
487 file = sep;
488 } else {
489 copy_file (ifd, file, 0);
490 break;
491 }
5b1d7137 492 }
5d898a00
SX
493 } else if (params.type == IH_TYPE_PBLIMAGE) {
494 /* PBL has special Image format, implements its' own */
495 pbl_load_uboot(ifd, &params);
d1be8f92 496 } else {
9bac0bb3 497 copy_file(ifd, params.datafile, pad_len);
5b1d7137 498 }
5b1d7137
WD
499 }
500
501 /* We're a bit of paranoid */
89a4d6b1
PW
502#if defined(_POSIX_SYNCHRONIZED_IO) && \
503 !defined(__sun__) && \
504 !defined(__FreeBSD__) && \
31cbe80c 505 !defined(__OpenBSD__) && \
89a4d6b1 506 !defined(__APPLE__)
5b1d7137
WD
507 (void) fdatasync (ifd);
508#else
509 (void) fsync (ifd);
510#endif
511
512 if (fstat(ifd, &sbuf) < 0) {
513 fprintf (stderr, "%s: Can't stat %s: %s\n",
89a4d6b1 514 params.cmdname, params.imagefile, strerror(errno));
5b1d7137
WD
515 exit (EXIT_FAILURE);
516 }
92a655c3 517 params.file_size = sbuf.st_size;
5b1d7137 518
fa956fde
MF
519 ptr = mmap(0, sbuf.st_size, PROT_READ|PROT_WRITE, MAP_SHARED, ifd, 0);
520 if (ptr == MAP_FAILED) {
5b1d7137 521 fprintf (stderr, "%s: Can't map %s: %s\n",
89a4d6b1 522 params.cmdname, params.imagefile, strerror(errno));
5b1d7137
WD
523 exit (EXIT_FAILURE);
524 }
525
89a4d6b1
PW
526 /* Setup the image header as per input image type*/
527 if (tparams->set_header)
528 tparams->set_header (ptr, &sbuf, ifd, &params);
529 else {
530 fprintf (stderr, "%s: Can't set header for %s: %s\n",
531 params.cmdname, tparams->name, strerror(errno));
532 exit (EXIT_FAILURE);
533 }
5b1d7137 534
89a4d6b1
PW
535 /* Print the image information by processing image header */
536 if (tparams->print_header)
537 tparams->print_header (ptr);
538 else {
539 fprintf (stderr, "%s: Can't print header for %s: %s\n",
540 params.cmdname, tparams->name, strerror(errno));
541 exit (EXIT_FAILURE);
542 }
5b1d7137
WD
543
544 (void) munmap((void *)ptr, sbuf.st_size);
545
546 /* We're a bit of paranoid */
89a4d6b1
PW
547#if defined(_POSIX_SYNCHRONIZED_IO) && \
548 !defined(__sun__) && \
549 !defined(__FreeBSD__) && \
31cbe80c 550 !defined(__OpenBSD__) && \
89a4d6b1 551 !defined(__APPLE__)
5b1d7137
WD
552 (void) fdatasync (ifd);
553#else
554 (void) fsync (ifd);
555#endif
556
557 if (close(ifd)) {
558 fprintf (stderr, "%s: Write error on %s: %s\n",
89a4d6b1 559 params.cmdname, params.imagefile, strerror(errno));
5b1d7137
WD
560 exit (EXIT_FAILURE);
561 }
562
563 exit (EXIT_SUCCESS);
564}
565
566static void
567copy_file (int ifd, const char *datafile, int pad)
568{
569 int dfd;
570 struct stat sbuf;
571 unsigned char *ptr;
572 int tail;
573 int zero = 0;
9bac0bb3 574 uint8_t zeros[4096];
5b1d7137
WD
575 int offset = 0;
576 int size;
a93648d1 577 struct image_type_params *tparams = imagetool_get_type(params.type);
5b1d7137 578
9bac0bb3
SB
579 memset(zeros, 0, sizeof(zeros));
580
89a4d6b1 581 if (params.vflag) {
5b1d7137
WD
582 fprintf (stderr, "Adding Image %s\n", datafile);
583 }
584
ef1464cc 585 if ((dfd = open(datafile, O_RDONLY|O_BINARY)) < 0) {
5b1d7137 586 fprintf (stderr, "%s: Can't open %s: %s\n",
89a4d6b1 587 params.cmdname, datafile, strerror(errno));
5b1d7137
WD
588 exit (EXIT_FAILURE);
589 }
590
591 if (fstat(dfd, &sbuf) < 0) {
592 fprintf (stderr, "%s: Can't stat %s: %s\n",
89a4d6b1 593 params.cmdname, datafile, strerror(errno));
5b1d7137
WD
594 exit (EXIT_FAILURE);
595 }
596
fa956fde
MF
597 ptr = mmap(0, sbuf.st_size, PROT_READ, MAP_SHARED, dfd, 0);
598 if (ptr == MAP_FAILED) {
5b1d7137 599 fprintf (stderr, "%s: Can't read %s: %s\n",
89a4d6b1 600 params.cmdname, datafile, strerror(errno));
5b1d7137
WD
601 exit (EXIT_FAILURE);
602 }
603
89a4d6b1 604 if (params.xflag) {
5b1d7137
WD
605 unsigned char *p = NULL;
606 /*
607 * XIP: do not append the image_header_t at the
608 * beginning of the file, but consume the space
609 * reserved for it.
610 */
611
89a4d6b1 612 if ((unsigned)sbuf.st_size < tparams->header_size) {
5b1d7137
WD
613 fprintf (stderr,
614 "%s: Bad size: \"%s\" is too small for XIP\n",
89a4d6b1 615 params.cmdname, datafile);
5b1d7137
WD
616 exit (EXIT_FAILURE);
617 }
618
89a4d6b1 619 for (p = ptr; p < ptr + tparams->header_size; p++) {
5b1d7137
WD
620 if ( *p != 0xff ) {
621 fprintf (stderr,
622 "%s: Bad file: \"%s\" has invalid buffer for XIP\n",
89a4d6b1 623 params.cmdname, datafile);
5b1d7137
WD
624 exit (EXIT_FAILURE);
625 }
626 }
627
89a4d6b1 628 offset = tparams->header_size;
5b1d7137
WD
629 }
630
631 size = sbuf.st_size - offset;
632 if (write(ifd, ptr + offset, size) != size) {
633 fprintf (stderr, "%s: Write error on %s: %s\n",
89a4d6b1 634 params.cmdname, params.imagefile, strerror(errno));
5b1d7137
WD
635 exit (EXIT_FAILURE);
636 }
637
9bac0bb3
SB
638 tail = size % 4;
639 if ((pad == 1) && (tail != 0)) {
5b1d7137
WD
640
641 if (write(ifd, (char *)&zero, 4-tail) != 4-tail) {
642 fprintf (stderr, "%s: Write error on %s: %s\n",
89a4d6b1
PW
643 params.cmdname, params.imagefile,
644 strerror(errno));
5b1d7137
WD
645 exit (EXIT_FAILURE);
646 }
9bac0bb3 647 } else if (pad > 1) {
424b86ae
SG
648 while (pad > 0) {
649 int todo = sizeof(zeros);
650
651 if (todo > pad)
652 todo = pad;
653 if (write(ifd, (char *)&zeros, todo) != todo) {
654 fprintf(stderr, "%s: Write error on %s: %s\n",
655 params.cmdname, params.imagefile,
656 strerror(errno));
657 exit(EXIT_FAILURE);
658 }
659 pad -= todo;
9bac0bb3 660 }
5b1d7137
WD
661 }
662
663 (void) munmap((void *)ptr, sbuf.st_size);
664 (void) close (dfd);
665}
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