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10#include "imagetool.h"
11#include "mkimage.h"
12#include "imximage.h"
13#include <fit_common.h>
14#include <image.h>
15#include <version.h>
16#ifdef __linux__
17#include <sys/ioctl.h>
18#endif
19
20static void copy_file(int, const char *, int);
21
22
23static struct image_tool_params params = {
24 .os = IH_OS_LINUX,
25 .arch = IH_ARCH_PPC,
26 .type = IH_TYPE_KERNEL,
27 .comp = IH_COMP_GZIP,
28 .dtc = MKIMAGE_DEFAULT_DTC_OPTIONS,
29 .imagename = "",
30 .imagename2 = "",
31};
32
33static enum ih_category cur_category;
34
35static int h_compare_category_name(const void *vtype1, const void *vtype2)
36{
37 const int *type1 = vtype1;
38 const int *type2 = vtype2;
39 const char *name1 = genimg_get_cat_short_name(cur_category, *type1);
40 const char *name2 = genimg_get_cat_short_name(cur_category, *type2);
41
42 return strcmp(name1, name2);
43}
44
45static int show_valid_options(enum ih_category category)
46{
47 int *order;
48 int count;
49 int item;
50 int i;
51
52 count = genimg_get_cat_count(category);
53 order = calloc(count, sizeof(*order));
54 if (!order)
55 return -ENOMEM;
56
57
58 for (i = 0, item = 0; i < count; i++, item++) {
59 while (!genimg_cat_has_id(category, item) && i < count) {
60 item++;
61 count--;
62 }
63 order[i] = item;
64 }
65 cur_category = category;
66 qsort(order, count, sizeof(int), h_compare_category_name);
67
68 fprintf(stderr, "\nInvalid %s, supported are:\n",
69 genimg_get_cat_desc(category));
70 for (i = 0; i < count; i++) {
71 item = order[i];
72 fprintf(stderr, "\t%-15s %s\n",
73 genimg_get_cat_short_name(category, item),
74 genimg_get_cat_name(category, item));
75 }
76 fprintf(stderr, "\n");
77 free(order);
78
79 return 0;
80}
81
82static void usage(const char *msg)
83{
84 fprintf(stderr, "Error: %s\n", msg);
85 fprintf(stderr, "Usage: %s [-T type] -l image\n"
86 " -l ==> list image header information\n"
87 " -T ==> parse image file as 'type'\n",
88 params.cmdname);
89 fprintf(stderr,
90 " %s [-x] -A arch -O os -T type -C comp -a addr -e ep -n name -d data_file[:data_file...] image\n"
91 " -A ==> set architecture to 'arch'\n"
92 " -O ==> set operating system to 'os'\n"
93 " -T ==> set image type to 'type'\n"
94 " -C ==> set compression type 'comp'\n"
95 " -a ==> set load address to 'addr' (hex)\n"
96 " -e ==> set entry point to 'ep' (hex)\n"
97 " -n ==> set image name to 'name'\n"
98 " -d ==> use image data from 'datafile'\n"
99 " -x ==> set XIP (execute in place)\n",
100 params.cmdname);
101 fprintf(stderr,
102 " %s [-D dtc_options] [-f fit-image.its|-f auto|-F] [-b <dtb> [-b <dtb>]] [-E] [-B size] [-i <ramdisk.cpio.gz>] fit-image\n"
103 " <dtb> file is used with -f auto, it may occur multiple times.\n",
104 params.cmdname);
105 fprintf(stderr,
106 " -D => set all options for device tree compiler\n"
107 " -f => input filename for FIT source\n"
108 " -i => input filename for ramdisk file\n"
109 " -E => place data outside of the FIT structure\n"
110 " -B => align size in hex for FIT structure and header\n");
111#ifdef CONFIG_FIT_SIGNATURE
112 fprintf(stderr,
113 "Signing / verified boot options: [-k keydir] [-K dtb] [ -c <comment>] [-p addr] [-r] [-N engine]\n"
114 " -k => set directory containing private keys\n"
115 " -K => write public keys to this .dtb file\n"
116 " -G => use this signing key (in lieu of -k)\n"
117 " -c => add comment in signature node\n"
118 " -F => re-sign existing FIT image\n"
119 " -p => place external data at a static position\n"
120 " -r => mark keys used as 'required' in dtb\n"
121 " -N => openssl engine to use for signing\n");
122#else
123 fprintf(stderr,
124 "Signing / verified boot not supported (CONFIG_FIT_SIGNATURE undefined)\n");
125#endif
126 fprintf(stderr, " %s -V ==> print version information and exit\n",
127 params.cmdname);
128 fprintf(stderr, "Use '-T list' to see a list of available image types\n");
129
130 exit(EXIT_FAILURE);
131}
132
133static int add_content(int type, const char *fname)
134{
135 struct content_info *cont;
136
137 cont = calloc(1, sizeof(*cont));
138 if (!cont)
139 return -1;
140 cont->type = type;
141 cont->fname = fname;
142 if (params.content_tail)
143 params.content_tail->next = cont;
144 else
145 params.content_head = cont;
146 params.content_tail = cont;
147
148 return 0;
149}
150
151static void process_args(int argc, char **argv)
152{
153 char *ptr;
154 int type = IH_TYPE_INVALID;
155 char *datafile = NULL;
156 int opt;
157
158 while ((opt = getopt(argc, argv,
159 "a:A:b:B:c:C:d:D:e:Ef:FG:k:i:K:ln:N:p:o:O:rR:qstT:vVx")) != -1) {
160 switch (opt) {
161 case 'a':
162 params.addr = strtoull(optarg, &ptr, 16);
163 if (*ptr) {
164 fprintf(stderr, "%s: invalid load address %s\n",
165 params.cmdname, optarg);
166 exit(EXIT_FAILURE);
167 }
168 break;
169 case 'A':
170 params.arch = genimg_get_arch_id(optarg);
171 if (params.arch < 0) {
172 show_valid_options(IH_ARCH);
173 usage("Invalid architecture");
174 }
175 break;
176 case 'b':
177 if (add_content(IH_TYPE_FLATDT, optarg)) {
178 fprintf(stderr,
179 "%s: Out of memory adding content '%s'",
180 params.cmdname, optarg);
181 exit(EXIT_FAILURE);
182 }
183 break;
184 case 'B':
185 params.bl_len = strtoull(optarg, &ptr, 16);
186 if (*ptr) {
187 fprintf(stderr, "%s: invalid block length %s\n",
188 params.cmdname, optarg);
189 exit(EXIT_FAILURE);
190 }
191
192 break;
193 case 'c':
194 params.comment = optarg;
195 break;
196 case 'C':
197 params.comp = genimg_get_comp_id(optarg);
198 if (params.comp < 0) {
199 show_valid_options(IH_COMP);
200 usage("Invalid compression type");
201 }
202 break;
203 case 'd':
204 params.datafile = optarg;
205 params.dflag = 1;
206 break;
207 case 'D':
208 params.dtc = optarg;
209 break;
210 case 'e':
211 params.ep = strtoull(optarg, &ptr, 16);
212 if (*ptr) {
213 fprintf(stderr, "%s: invalid entry point %s\n",
214 params.cmdname, optarg);
215 exit(EXIT_FAILURE);
216 }
217 params.eflag = 1;
218 break;
219 case 'E':
220 params.external_data = true;
221 break;
222 case 'f':
223 datafile = optarg;
224 params.auto_its = !strcmp(datafile, "auto");
225
226 case 'F':
227
228
229
230
231 params.type = IH_TYPE_FLATDT;
232 params.fflag = 1;
233 break;
234 case 'G':
235 params.keyfile = optarg;
236 break;
237 case 'i':
238 params.fit_ramdisk = optarg;
239 break;
240 case 'k':
241 params.keydir = optarg;
242 break;
243 case 'K':
244 params.keydest = optarg;
245 break;
246 case 'l':
247 params.lflag = 1;
248 break;
249 case 'n':
250 params.imagename = optarg;
251 break;
252 case 'N':
253 params.engine_id = optarg;
254 break;
255 case 'o':
256 params.algo_name = optarg;
257 break;
258 case 'O':
259 params.os = genimg_get_os_id(optarg);
260 if (params.os < 0) {
261 show_valid_options(IH_OS);
262 usage("Invalid operating system");
263 }
264 break;
265 case 'p':
266 params.external_offset = strtoull(optarg, &ptr, 16);
267 if (*ptr) {
268 fprintf(stderr, "%s: invalid offset size %s\n",
269 params.cmdname, optarg);
270 exit(EXIT_FAILURE);
271 }
272 break;
273 case 'q':
274 params.quiet = 1;
275 break;
276 case 'r':
277 params.require_keys = 1;
278 break;
279 case 'R':
280
281
282
283
284 params.imagename2 = optarg;
285 break;
286 case 's':
287 params.skipcpy = 1;
288 break;
289 case 't':
290 params.reset_timestamp = 1;
291 break;
292 case 'T':
293 if (strcmp(optarg, "list") == 0) {
294 show_valid_options(IH_TYPE);
295 exit(EXIT_SUCCESS);
296 }
297 type = genimg_get_type_id(optarg);
298 if (type < 0) {
299 show_valid_options(IH_TYPE);
300 usage("Invalid image type");
301 }
302 break;
303 case 'v':
304 params.vflag++;
305 break;
306 case 'V':
307 printf("mkimage version %s\n", PLAIN_VERSION);
308 exit(EXIT_SUCCESS);
309 case 'x':
310 params.xflag++;
311 break;
312 default:
313 usage("Invalid option");
314 }
315 }
316
317
318 if (optind < argc)
319 params.imagefile = argv[optind];
320
321
322
323
324
325
326 if (params.type == IH_TYPE_FLATDT) {
327 params.fit_image_type = type ? type : IH_TYPE_KERNEL;
328
329 if (!params.auto_its)
330 params.datafile = datafile;
331 else if (!params.datafile)
332 usage("Missing data file for auto-FIT (use -d)");
333 } else if (params.lflag || type != IH_TYPE_INVALID) {
334 if (type == IH_TYPE_SCRIPT && !params.datafile)
335 usage("Missing data file for script (use -d)");
336 params.type = type;
337 }
338
339 if (!params.imagefile)
340 usage("Missing output filename");
341}
342
343int main(int argc, char **argv)
344{
345 int ifd = -1;
346 struct stat sbuf;
347 char *ptr;
348 int retval = 0;
349 struct image_type_params *tparams = NULL;
350 int pad_len = 0;
351 int dfd;
352 size_t map_len;
353
354 params.cmdname = *argv;
355 params.addr = 0;
356 params.ep = 0;
357
358 process_args(argc, argv);
359
360
361 tparams = imagetool_get_type(params.type);
362 if (tparams == NULL && !params.lflag) {
363 fprintf (stderr, "%s: unsupported type %s\n",
364 params.cmdname, genimg_get_type_name(params.type));
365 exit (EXIT_FAILURE);
366 }
367
368
369
370
371
372 if (tparams && tparams->check_params)
373 if (tparams->check_params (¶ms))
374 usage("Bad parameters for image type");
375
376 if (!params.eflag) {
377 params.ep = params.addr;
378
379 if (params.xflag && tparams)
380 params.ep += tparams->header_size;
381 }
382
383 if (params.fflag){
384 if (!tparams) {
385 fprintf(stderr, "%s: Missing FIT support\n",
386 params.cmdname);
387 exit (EXIT_FAILURE);
388 }
389 if (tparams->fflag_handle)
390
391
392
393
394
395
396 retval = tparams->fflag_handle(¶ms);
397
398 if (retval != EXIT_SUCCESS)
399 usage("Bad parameters for FIT image type");
400 }
401
402 if (params.lflag || params.fflag) {
403 ifd = open (params.imagefile, O_RDONLY|O_BINARY);
404 } else {
405 ifd = open (params.imagefile,
406 O_RDWR|O_CREAT|O_TRUNC|O_BINARY, 0666);
407 }
408
409 if (ifd < 0) {
410 fprintf (stderr, "%s: Can't open %s: %s\n",
411 params.cmdname, params.imagefile,
412 strerror(errno));
413 exit (EXIT_FAILURE);
414 }
415
416 if (params.lflag || params.fflag) {
417 uint64_t size;
418
419
420
421 if (fstat(ifd, &sbuf) < 0) {
422 fprintf (stderr, "%s: Can't stat %s: %s\n",
423 params.cmdname, params.imagefile,
424 strerror(errno));
425 exit (EXIT_FAILURE);
426 }
427
428 if ((sbuf.st_mode & S_IFMT) == S_IFBLK) {
429#ifdef __linux__
430#if defined(__linux__) && defined(_IOR) && !defined(BLKGETSIZE64)
431#define BLKGETSIZE64 _IOR(0x12,114,size_t)
432#endif
433 if (ioctl(ifd, BLKGETSIZE64, &size) < 0) {
434 fprintf (stderr,
435 "%s: failed to get size of block device \"%s\"\n",
436 params.cmdname, params.imagefile);
437 exit (EXIT_FAILURE);
438 }
439#else
440 fprintf (stderr,
441 "%s: \"%s\" is block device, don't know how to get its size\n",
442 params.cmdname, params.imagefile);
443 exit (EXIT_FAILURE);
444#endif
445 } else if (tparams && sbuf.st_size < (off_t)tparams->header_size) {
446 fprintf (stderr,
447 "%s: Bad size: \"%s\" is not valid image: size %llu < %u\n",
448 params.cmdname, params.imagefile,
449 (unsigned long long) sbuf.st_size,
450 tparams->header_size);
451 exit (EXIT_FAILURE);
452 } else {
453 size = sbuf.st_size;
454 }
455
456 ptr = mmap(0, size, PROT_READ, MAP_SHARED, ifd, 0);
457 if (ptr == MAP_FAILED) {
458 fprintf (stderr, "%s: Can't read %s: %s\n",
459 params.cmdname, params.imagefile,
460 strerror(errno));
461 exit (EXIT_FAILURE);
462 }
463
464
465
466
467
468
469 retval = imagetool_verify_print_header(ptr, &sbuf, tparams, ¶ms);
470
471 (void) munmap((void *)ptr, sbuf.st_size);
472 (void) close (ifd);
473 if (!retval)
474 summary_show(¶ms.summary, params.imagefile,
475 params.keydest);
476
477 exit (retval);
478 }
479
480 if ((params.type != IH_TYPE_MULTI) && (params.type != IH_TYPE_SCRIPT)) {
481 dfd = open(params.datafile, O_RDONLY | O_BINARY);
482 if (dfd < 0) {
483 fprintf(stderr, "%s: Can't open %s: %s\n",
484 params.cmdname, params.datafile,
485 strerror(errno));
486 exit(EXIT_FAILURE);
487 }
488
489 if (fstat(dfd, &sbuf) < 0) {
490 fprintf(stderr, "%s: Can't stat %s: %s\n",
491 params.cmdname, params.datafile,
492 strerror(errno));
493 exit(EXIT_FAILURE);
494 }
495
496 params.file_size = sbuf.st_size + tparams->header_size;
497 close(dfd);
498 }
499
500
501
502
503
504
505
506 if (tparams->vrec_header)
507 pad_len = tparams->vrec_header(¶ms, tparams);
508 else
509 memset(tparams->hdr, 0, tparams->header_size);
510
511 if (write(ifd, tparams->hdr, tparams->header_size)
512 != tparams->header_size) {
513 fprintf (stderr, "%s: Write error on %s: %s\n",
514 params.cmdname, params.imagefile, strerror(errno));
515 exit (EXIT_FAILURE);
516 }
517
518 if (!params.skipcpy) {
519 if (params.type == IH_TYPE_MULTI ||
520 params.type == IH_TYPE_SCRIPT) {
521 char *file = params.datafile;
522 uint32_t size;
523
524 for (;;) {
525 char *sep = NULL;
526
527 if (file) {
528 if ((sep = strchr(file, ':')) != NULL) {
529 *sep = '\0';
530 }
531
532 if (stat (file, &sbuf) < 0) {
533 fprintf (stderr, "%s: Can't stat %s: %s\n",
534 params.cmdname, file, strerror(errno));
535 exit (EXIT_FAILURE);
536 }
537 size = cpu_to_uimage (sbuf.st_size);
538 } else {
539 size = 0;
540 }
541
542 if (write(ifd, (char *)&size, sizeof(size)) != sizeof(size)) {
543 fprintf (stderr, "%s: Write error on %s: %s\n",
544 params.cmdname, params.imagefile,
545 strerror(errno));
546 exit (EXIT_FAILURE);
547 }
548
549 if (!file) {
550 break;
551 }
552
553 if (sep) {
554 *sep = ':';
555 file = sep + 1;
556 } else {
557 file = NULL;
558 }
559 }
560
561 file = params.datafile;
562
563 for (;;) {
564 char *sep = strchr(file, ':');
565 if (sep) {
566 *sep = '\0';
567 copy_file (ifd, file, 1);
568 *sep++ = ':';
569 file = sep;
570 } else {
571 copy_file (ifd, file, 0);
572 break;
573 }
574 }
575 } else if (params.type == IH_TYPE_PBLIMAGE) {
576
577 pbl_load_uboot(ifd, ¶ms);
578 } else if (params.type == IH_TYPE_ZYNQMPBIF) {
579
580 int ret;
581
582 ret = zynqmpbif_copy_image(ifd, ¶ms);
583 if (ret)
584 return ret;
585 } else if (params.type == IH_TYPE_IMX8IMAGE) {
586
587 int ret;
588
589 ret = imx8image_copy_image(ifd, ¶ms);
590 if (ret)
591 return ret;
592 } else if (params.type == IH_TYPE_IMX8MIMAGE) {
593
594 int ret;
595
596 ret = imx8mimage_copy_image(ifd, ¶ms);
597 if (ret)
598 return ret;
599 } else if ((params.type == IH_TYPE_RKSD) ||
600 (params.type == IH_TYPE_RKSPI)) {
601
602 int ret;
603
604 ret = rockchip_copy_image(ifd, ¶ms);
605 if (ret)
606 return ret;
607 } else {
608 copy_file(ifd, params.datafile, pad_len);
609 }
610 if (params.type == IH_TYPE_FIRMWARE_IVT) {
611
612 uint32_t aligned_filesize = ALIGN(params.file_size,
613 0x1000);
614 flash_header_v2_t ivt_header = { { 0xd1, 0x2000, 0x40 },
615 params.addr, 0, 0, 0, params.addr
616 + aligned_filesize
617 - tparams->header_size,
618 params.addr + aligned_filesize
619 - tparams->header_size
620 + 0x20, 0 };
621 int i = params.file_size;
622 for (; i < aligned_filesize; i++) {
623 if (write(ifd, (char *) &i, 1) != 1) {
624 fprintf(stderr,
625 "%s: Write error on %s: %s\n",
626 params.cmdname,
627 params.imagefile,
628 strerror(errno));
629 exit(EXIT_FAILURE);
630 }
631 }
632 if (write(ifd, &ivt_header, sizeof(flash_header_v2_t))
633 != sizeof(flash_header_v2_t)) {
634 fprintf(stderr, "%s: Write error on %s: %s\n",
635 params.cmdname,
636 params.imagefile,
637 strerror(errno));
638 exit(EXIT_FAILURE);
639 }
640 }
641 }
642
643
644#if defined(_POSIX_SYNCHRONIZED_IO) && \
645 !defined(__sun__) && \
646 !defined(__FreeBSD__) && \
647 !defined(__OpenBSD__) && \
648 !defined(__APPLE__)
649 (void) fdatasync (ifd);
650#else
651 (void) fsync (ifd);
652#endif
653
654 if (fstat(ifd, &sbuf) < 0) {
655 fprintf (stderr, "%s: Can't stat %s: %s\n",
656 params.cmdname, params.imagefile, strerror(errno));
657 exit (EXIT_FAILURE);
658 }
659 params.file_size = sbuf.st_size;
660
661 map_len = sbuf.st_size;
662 ptr = mmap(0, map_len, PROT_READ | PROT_WRITE, MAP_SHARED, ifd, 0);
663 if (ptr == MAP_FAILED) {
664 fprintf (stderr, "%s: Can't map %s: %s\n",
665 params.cmdname, params.imagefile, strerror(errno));
666 exit (EXIT_FAILURE);
667 }
668
669
670 if (tparams->set_header)
671 tparams->set_header (ptr, &sbuf, ifd, ¶ms);
672 else {
673 fprintf (stderr, "%s: Can't set header for %s: %s\n",
674 params.cmdname, tparams->name, strerror(errno));
675 exit (EXIT_FAILURE);
676 }
677
678
679 if (tparams->print_header)
680 tparams->print_header (ptr);
681 else {
682 fprintf (stderr, "%s: Can't print header for %s\n",
683 params.cmdname, tparams->name);
684 }
685
686 (void)munmap((void *)ptr, map_len);
687
688
689#if defined(_POSIX_SYNCHRONIZED_IO) && \
690 !defined(__sun__) && \
691 !defined(__FreeBSD__) && \
692 !defined(__OpenBSD__) && \
693 !defined(__APPLE__)
694 (void) fdatasync (ifd);
695#else
696 (void) fsync (ifd);
697#endif
698
699 if (close(ifd)) {
700 fprintf (stderr, "%s: Write error on %s: %s\n",
701 params.cmdname, params.imagefile, strerror(errno));
702 exit (EXIT_FAILURE);
703 }
704
705 exit (EXIT_SUCCESS);
706}
707
708static void
709copy_file (int ifd, const char *datafile, int pad)
710{
711 int dfd;
712 struct stat sbuf;
713 unsigned char *ptr;
714 int tail;
715 int zero = 0;
716 uint8_t zeros[4096];
717 int offset = 0;
718 int size, ret;
719 struct image_type_params *tparams = imagetool_get_type(params.type);
720
721 memset(zeros, 0, sizeof(zeros));
722
723 if (params.vflag) {
724 fprintf (stderr, "Adding Image %s\n", datafile);
725 }
726
727 if ((dfd = open(datafile, O_RDONLY|O_BINARY)) < 0) {
728 fprintf (stderr, "%s: Can't open %s: %s\n",
729 params.cmdname, datafile, strerror(errno));
730 exit (EXIT_FAILURE);
731 }
732
733 if (fstat(dfd, &sbuf) < 0) {
734 fprintf (stderr, "%s: Can't stat %s: %s\n",
735 params.cmdname, datafile, strerror(errno));
736 exit (EXIT_FAILURE);
737 }
738
739 if (sbuf.st_size == 0) {
740 fprintf (stderr, "%s: Input file %s is empty, bailing out\n",
741 params.cmdname, datafile);
742 exit (EXIT_FAILURE);
743 }
744
745 ptr = mmap(0, sbuf.st_size, PROT_READ, MAP_SHARED, dfd, 0);
746 if (ptr == MAP_FAILED) {
747 fprintf (stderr, "%s: Can't read %s: %s\n",
748 params.cmdname, datafile, strerror(errno));
749 exit (EXIT_FAILURE);
750 }
751
752 if (params.xflag) {
753 unsigned char *p = NULL;
754
755
756
757
758
759
760 if ((unsigned)sbuf.st_size < tparams->header_size) {
761 fprintf (stderr,
762 "%s: Bad size: \"%s\" is too small for XIP\n",
763 params.cmdname, datafile);
764 exit (EXIT_FAILURE);
765 }
766
767 for (p = ptr; p < ptr + tparams->header_size; p++) {
768 if ( *p != 0xff ) {
769 fprintf (stderr,
770 "%s: Bad file: \"%s\" has invalid buffer for XIP\n",
771 params.cmdname, datafile);
772 exit (EXIT_FAILURE);
773 }
774 }
775
776 offset = tparams->header_size;
777 }
778
779 size = sbuf.st_size - offset;
780
781 ret = write(ifd, ptr + offset, size);
782 if (ret != size) {
783 if (ret < 0)
784 fprintf (stderr, "%s: Write error on %s: %s\n",
785 params.cmdname, params.imagefile, strerror(errno));
786 else if (ret < size)
787 fprintf (stderr, "%s: Write only %d/%d bytes, "\
788 "probably no space left on the device\n",
789 params.cmdname, ret, size);
790 exit (EXIT_FAILURE);
791 }
792
793 tail = size % 4;
794 if ((pad == 1) && (tail != 0)) {
795
796 if (write(ifd, (char *)&zero, 4-tail) != 4-tail) {
797 fprintf (stderr, "%s: Write error on %s: %s\n",
798 params.cmdname, params.imagefile,
799 strerror(errno));
800 exit (EXIT_FAILURE);
801 }
802 } else if (pad > 1) {
803 while (pad > 0) {
804 int todo = sizeof(zeros);
805
806 if (todo > pad)
807 todo = pad;
808 if (write(ifd, (char *)&zeros, todo) != todo) {
809 fprintf(stderr, "%s: Write error on %s: %s\n",
810 params.cmdname, params.imagefile,
811 strerror(errno));
812 exit(EXIT_FAILURE);
813 }
814 pad -= todo;
815 }
816 }
817
818 (void) munmap((void *)ptr, sbuf.st_size);
819 (void) close (dfd);
820}
821
