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u-boot/tools/mkimage.c
Sean Anderson dc3a923ed6 mkimage: Add long options 
The mkimage command has had many options added over the years.
Unfortunately, we are starting to run out of short options. Recent options
don't have any obvious relation to their meaning (e.g. -o/-g). Fortunately,
long options exist. Add long options for each current short option.

For the curious, the remaining short options are HIkLmMPQSuUwWXyYzZ.

Signed-off-by: Sean Anderson <seanga2@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2022-07-13 20:05:49 +02:00

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// SPDX-License-Identifier: GPL-2.0+
/*
* (C) Copyright 2008 Semihalf
*
* (C) Copyright 2000-2009
* DENX Software Engineering
* Wolfgang Denk, wd@denx.de
*/
#include "imagetool.h"
#include "mkimage.h"
#include "imximage.h"
#include <fit_common.h>
#include <getopt.h>
#include <image.h>
#include <version.h>
#ifdef __linux__
#include <sys/ioctl.h>
#endif
static void copy_file(int, const char *, int);
/* parameters initialized by core will be used by the image type code */
static struct image_tool_params params = {
.os = IH_OS_LINUX,
.arch = IH_ARCH_PPC,
.type = IH_TYPE_KERNEL,
.comp = IH_COMP_GZIP,
.dtc = MKIMAGE_DEFAULT_DTC_OPTIONS,
.imagename = "",
.imagename2 = "",
};
static enum ih_category cur_category;
static int h_compare_category_name(const void *vtype1, const void *vtype2)
{
const int *type1 = vtype1;
const int *type2 = vtype2;
const char *name1 = genimg_get_cat_short_name(cur_category, *type1);
const char *name2 = genimg_get_cat_short_name(cur_category, *type2);
return strcmp(name1, name2);
}
static int show_valid_options(enum ih_category category)
{
int *order;
int count;
int item;
int i;
count = genimg_get_cat_count(category);
order = calloc(count, sizeof(*order));
if (!order)
return -ENOMEM;
/* Sort the names in order of short name for easier reading */
for (i = 0, item = 0; i < count; i++, item++) {
while (!genimg_cat_has_id(category, item) && i < count) {
item++;
count--;
}
order[i] = item;
}
cur_category = category;
qsort(order, count, sizeof(int), h_compare_category_name);
fprintf(stderr, "\nInvalid %s, supported are:\n",
genimg_get_cat_desc(category));
for (i = 0; i < count; i++) {
item = order[i];
fprintf(stderr, "\t%-15s %s\n",
genimg_get_cat_short_name(category, item),
genimg_get_cat_name(category, item));
}
fprintf(stderr, "\n");
free(order);
return 0;
}
static void usage(const char *msg)
{
fprintf(stderr, "Error: %s\n", msg);
fprintf(stderr, "Usage: %s [-T type] -l image\n"
" -l ==> list image header information\n"
" -T ==> parse image file as 'type'\n"
" -q ==> quiet\n",
params.cmdname);
fprintf(stderr,
" %s [-x] -A arch -O os -T type -C comp -a addr -e ep -n name -d data_file[:data_file...] image\n"
" -A ==> set architecture to 'arch'\n"
" -O ==> set operating system to 'os'\n"
" -T ==> set image type to 'type'\n"
" -C ==> set compression type 'comp'\n"
" -a ==> set load address to 'addr' (hex)\n"
" -e ==> set entry point to 'ep' (hex)\n"
" -n ==> set image name to 'name'\n"
" -R ==> set second image name to 'name'\n"
" -d ==> use image data from 'datafile'\n"
" -x ==> set XIP (execute in place)\n"
" -s ==> create an image with no data\n"
" -v ==> verbose\n",
params.cmdname);
fprintf(stderr,
" %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"
" <dtb> file is used with -f auto, it may occur multiple times.\n",
params.cmdname);
fprintf(stderr,
" -D => set all options for device tree compiler\n"
" -f => input filename for FIT source\n"
" -i => input filename for ramdisk file\n"
" -E => place data outside of the FIT structure\n"
" -B => align size in hex for FIT structure and header\n"
" -b => append the device tree binary to the FIT\n"
" -t => update the timestamp in the FIT\n");
#ifdef CONFIG_FIT_SIGNATURE
fprintf(stderr,
"Signing / verified boot options: [-k keydir] [-K dtb] [ -c <comment>] [-p addr] [-r] [-N engine]\n"
" -k => set directory containing private keys\n"
" -K => write public keys to this .dtb file\n"
" -g => set key name hint\n"
" -G => use this signing key (in lieu of -k)\n"
" -c => add comment in signature node\n"
" -F => re-sign existing FIT image\n"
" -p => place external data at a static position\n"
" -r => mark keys used as 'required' in dtb\n"
" -N => openssl engine to use for signing\n"
" -o => algorithm to use for signing\n");
#else
fprintf(stderr,
"Signing / verified boot not supported (CONFIG_FIT_SIGNATURE undefined)\n");
#endif
fprintf(stderr, " %s -V ==> print version information and exit\n",
params.cmdname);
fprintf(stderr, "Use '-T list' to see a list of available image types\n");
fprintf(stderr, "Long options are available; read the man page for details\n");
exit(EXIT_FAILURE);
}
static int add_content(int type, const char *fname)
{
struct content_info *cont;
cont = calloc(1, sizeof(*cont));
if (!cont)
return -1;
cont->type = type;
cont->fname = fname;
if (params.content_tail)
params.content_tail->next = cont;
else
params.content_head = cont;
params.content_tail = cont;
return 0;
}
static const char optstring[] =
"a:A:b:B:c:C:d:D:e:Ef:Fg:G:i:k:K:ln:N:o:O:p:qrR:stT:vVx";
static const struct option longopts[] = {
{ "load-address", required_argument, NULL, 'a' },
{ "architecture", required_argument, NULL, 'A' },
{ "device-tree", required_argument, NULL, 'b' },
{ "alignment", required_argument, NULL, 'B' },
{ "comment", required_argument, NULL, 'c' },
{ "compression", required_argument, NULL, 'C' },
{ "image", required_argument, NULL, 'd' },
{ "dtcopts", required_argument, NULL, 'D' },
{ "entry-point", required_argument, NULL, 'e' },
{ "external", no_argument, NULL, 'E' },
{ "fit", required_argument, NULL, 'f' },
{ "update", no_argument, NULL, 'F' },
{ "key-name-hint", required_argument, NULL, 'g' },
{ "key-file", required_argument, NULL, 'G' },
{ "help", no_argument, NULL, 'h' },
{ "initramfs", required_argument, NULL, 'i' },
{ "key-dir", required_argument, NULL, 'k' },
{ "key-dest", required_argument, NULL, 'K' },
{ "list", no_argument, NULL, 'l' },
{ "config", required_argument, NULL, 'n' },
{ "engine", required_argument, NULL, 'N' },
{ "algo", required_argument, NULL, 'o' },
{ "os", required_argument, NULL, 'O' },
{ "position", required_argument, NULL, 'p' },
{ "quiet", no_argument, NULL, 'q' },
{ "key-required", no_argument, NULL, 'r' },
{ "secondary-config", required_argument, NULL, 'R' },
{ "no-copy", no_argument, NULL, 's' },
{ "touch", no_argument, NULL, 't' },
{ "type", required_argument, NULL, 'T' },
{ "verbose", no_argument, NULL, 'v' },
{ "version", no_argument, NULL, 'V' },
{ "xip", no_argument, NULL, 'x' },
};
static void process_args(int argc, char **argv)
{
char *ptr;
int type = IH_TYPE_INVALID;
char *datafile = NULL;
int opt;
while ((opt = getopt_long(argc, argv, optstring,
longopts, NULL)) != -1) {
switch (opt) {
case 'a':
params.addr = strtoull(optarg, &ptr, 16);
if (*ptr) {
fprintf(stderr, "%s: invalid load address %s\n",
params.cmdname, optarg);
exit(EXIT_FAILURE);
}
break;
case 'A':
params.arch = genimg_get_arch_id(optarg);
if (params.arch < 0) {
show_valid_options(IH_ARCH);
usage("Invalid architecture");
}
params.Aflag = 1;
break;
case 'b':
if (add_content(IH_TYPE_FLATDT, optarg)) {
fprintf(stderr,
"%s: Out of memory adding content '%s'",
params.cmdname, optarg);
exit(EXIT_FAILURE);
}
break;
case 'B':
params.bl_len = strtoull(optarg, &ptr, 16);
if (*ptr) {
fprintf(stderr, "%s: invalid block length %s\n",
params.cmdname, optarg);
exit(EXIT_FAILURE);
}
break;
case 'c':
params.comment = optarg;
break;
case 'C':
params.comp = genimg_get_comp_id(optarg);
if (params.comp < 0) {
show_valid_options(IH_COMP);
usage("Invalid compression type");
}
break;
case 'd':
params.datafile = optarg;
params.dflag = 1;
break;
case 'D':
params.dtc = optarg;
break;
case 'e':
params.ep = strtoull(optarg, &ptr, 16);
if (*ptr) {
fprintf(stderr, "%s: invalid entry point %s\n",
params.cmdname, optarg);
exit(EXIT_FAILURE);
}
params.eflag = 1;
break;
case 'E':
params.external_data = true;
break;
case 'f':
datafile = optarg;
params.auto_its = !strcmp(datafile, "auto");
/* fallthrough */
case 'F':
/*
* The flattened image tree (FIT) format
* requires a flattened device tree image type
*/
params.type = IH_TYPE_FLATDT;
params.fflag = 1;
break;
case 'g':
params.keyname = optarg;
case 'G':
params.keyfile = optarg;
break;
case 'i':
params.fit_ramdisk = optarg;
break;
case 'k':
params.keydir = optarg;
break;
case 'K':
params.keydest = optarg;
break;
case 'l':
params.lflag = 1;
break;
case 'n':
params.imagename = optarg;
break;
case 'N':
params.engine_id = optarg;
break;
case 'o':
params.algo_name = optarg;
break;
case 'O':
params.os = genimg_get_os_id(optarg);
if (params.os < 0) {
show_valid_options(IH_OS);
usage("Invalid operating system");
}
break;
case 'p':
params.external_offset = strtoull(optarg, &ptr, 16);
if (*ptr) {
fprintf(stderr, "%s: invalid offset size %s\n",
params.cmdname, optarg);
exit(EXIT_FAILURE);
}
break;
case 'q':
params.quiet = 1;
break;
case 'r':
params.require_keys = 1;
break;
case 'R':
/*
* This entry is for the second configuration
* file, if only one is not enough.
*/
params.imagename2 = optarg;
break;
case 's':
params.skipcpy = 1;
break;
case 't':
params.reset_timestamp = 1;
break;
case 'T':
if (strcmp(optarg, "list") == 0) {
show_valid_options(IH_TYPE);
exit(EXIT_SUCCESS);
}
type = genimg_get_type_id(optarg);
if (type < 0) {
show_valid_options(IH_TYPE);
usage("Invalid image type");
}
break;
case 'v':
params.vflag++;
break;
case 'V':
printf("mkimage version %s\n", PLAIN_VERSION);
exit(EXIT_SUCCESS);
case 'x':
params.xflag++;
break;
default:
usage("Invalid option");
}
}
/* The last parameter is expected to be the imagefile */
if (optind < argc)
params.imagefile = argv[optind];
/*
* For auto-generated FIT images we need to know the image type to put
* in the FIT, which is separate from the file's image type (which
* will always be IH_TYPE_FLATDT in this case).
*/
if (params.type == IH_TYPE_FLATDT) {
params.fit_image_type = type ? type : IH_TYPE_KERNEL;
/* For auto_its, datafile is always 'auto' */
if (!params.auto_its)
params.datafile = datafile;
else if (!params.datafile)
usage("Missing data file for auto-FIT (use -d)");
} else if (params.lflag || type != IH_TYPE_INVALID) {
if (type == IH_TYPE_SCRIPT && !params.datafile)
usage("Missing data file for script (use -d)");
params.type = type;
}
if (!params.imagefile)
usage("Missing output filename");
}
static void verify_image(const struct image_type_params *tparams)
{
struct stat sbuf;
void *ptr;
int ifd;
ifd = open(params.imagefile, O_RDONLY | O_BINARY);
if (ifd < 0) {
fprintf(stderr, "%s: Can't open %s: %s\n",
params.cmdname, params.imagefile,
strerror(errno));
exit(EXIT_FAILURE);
}
if (fstat(ifd, &sbuf) < 0) {
fprintf(stderr, "%s: Can't stat %s: %s\n",
params.cmdname, params.imagefile, strerror(errno));
exit(EXIT_FAILURE);
}
params.file_size = sbuf.st_size;
ptr = mmap(0, params.file_size, PROT_READ, MAP_SHARED, ifd, 0);
if (ptr == MAP_FAILED) {
fprintf(stderr, "%s: Can't map %s: %s\n",
params.cmdname, params.imagefile, strerror(errno));
exit(EXIT_FAILURE);
}
if (tparams->verify_header((unsigned char *)ptr, params.file_size, &params) != 0) {
fprintf(stderr, "%s: Failed to verify header of %s\n",
params.cmdname, params.imagefile);
exit(EXIT_FAILURE);
}
(void)munmap(ptr, params.file_size);
(void)close(ifd);
}
int main(int argc, char **argv)
{
int ifd = -1;
struct stat sbuf;
char *ptr;
int retval = 0;
struct image_type_params *tparams = NULL;
int pad_len = 0;
int dfd;
size_t map_len;
params.cmdname = *argv;
params.addr = 0;
params.ep = 0;
process_args(argc, argv);
/* set tparams as per input type_id */
tparams = imagetool_get_type(params.type);
if (tparams == NULL && !params.lflag) {
fprintf (stderr, "%s: unsupported type %s\n",
params.cmdname, genimg_get_type_name(params.type));
exit (EXIT_FAILURE);
}
/*
* check the passed arguments parameters meets the requirements
* as per image type to be generated/listed
*/
if (tparams && tparams->check_params)
if (tparams->check_params (&params))
usage("Bad parameters for image type");
if (!params.eflag) {
params.ep = params.addr;
/* If XIP, entry point must be after the U-Boot header */
if (params.xflag && tparams)
params.ep += tparams->header_size;
}
if (params.fflag){
if (!tparams) {
fprintf(stderr, "%s: Missing FIT support\n",
params.cmdname);
exit (EXIT_FAILURE);
}
if (tparams->fflag_handle)
/*
* in some cases, some additional processing needs
* to be done if fflag is defined
*
* For ex. fit_handle_file for Fit file support
*/
retval = tparams->fflag_handle(&params);
if (retval != EXIT_SUCCESS)
usage("Bad parameters for FIT image type");
}
if (params.lflag || params.fflag) {
ifd = open (params.imagefile, O_RDONLY|O_BINARY);
} else {
ifd = open (params.imagefile,
O_RDWR|O_CREAT|O_TRUNC|O_BINARY, 0666);
}
if (ifd < 0) {
fprintf (stderr, "%s: Can't open %s: %s\n",
params.cmdname, params.imagefile,
strerror(errno));
exit (EXIT_FAILURE);
}
if (params.lflag || params.fflag) {
uint64_t size;
/*
* list header information of existing image
*/
if (fstat(ifd, &sbuf) < 0) {
fprintf (stderr, "%s: Can't stat %s: %s\n",
params.cmdname, params.imagefile,
strerror(errno));
exit (EXIT_FAILURE);
}
if ((sbuf.st_mode & S_IFMT) == S_IFBLK) {
#ifdef __linux__
#if defined(__linux__) && defined(_IOR) && !defined(BLKGETSIZE64)
#define BLKGETSIZE64 _IOR(0x12,114,size_t) /* return device size in bytes (u64 *arg) */
#endif
if (ioctl(ifd, BLKGETSIZE64, &size) < 0) {
fprintf (stderr,
"%s: failed to get size of block device \"%s\"\n",
params.cmdname, params.imagefile);
exit (EXIT_FAILURE);
}
#else
fprintf (stderr,
"%s: \"%s\" is block device, don't know how to get its size\n",
params.cmdname, params.imagefile);
exit (EXIT_FAILURE);
#endif
} else if (tparams && sbuf.st_size < (off_t)tparams->header_size) {
fprintf (stderr,
"%s: Bad size: \"%s\" is not valid image: size %llu < %u\n",
params.cmdname, params.imagefile,
(unsigned long long) sbuf.st_size,
tparams->header_size);
exit (EXIT_FAILURE);
} else {
size = sbuf.st_size;
}
ptr = mmap(0, size, PROT_READ, MAP_SHARED, ifd, 0);
if (ptr == MAP_FAILED) {
fprintf (stderr, "%s: Can't read %s: %s\n",
params.cmdname, params.imagefile,
strerror(errno));
exit (EXIT_FAILURE);
}
/*
* Verifies the header format based on the expected header for image
* type in tparams. If tparams is NULL simply check all image types
* to find one that matches our header.
*/
retval = imagetool_verify_print_header(ptr, &sbuf, tparams, &params);
(void) munmap((void *)ptr, sbuf.st_size);
(void) close (ifd);
if (!retval)
summary_show(&params.summary, params.imagefile,
params.keydest);
exit (retval);
}
if ((params.type != IH_TYPE_MULTI) && (params.type != IH_TYPE_SCRIPT)) {
dfd = open(params.datafile, O_RDONLY | O_BINARY);
if (dfd < 0) {
fprintf(stderr, "%s: Can't open %s: %s\n",
params.cmdname, params.datafile,
strerror(errno));
exit(EXIT_FAILURE);
}
if (fstat(dfd, &sbuf) < 0) {
fprintf(stderr, "%s: Can't stat %s: %s\n",
params.cmdname, params.datafile,
strerror(errno));
exit(EXIT_FAILURE);
}
params.file_size = sbuf.st_size + tparams->header_size;
close(dfd);
}
/*
* In case there an header with a variable
* length will be added, the corresponding
* function is called. This is responsible to
* allocate memory for the header itself.
*/
if (tparams->vrec_header)
pad_len = tparams->vrec_header(&params, tparams);
else
memset(tparams->hdr, 0, tparams->header_size);
if (write(ifd, tparams->hdr, tparams->header_size)
!= tparams->header_size) {
fprintf (stderr, "%s: Write error on %s: %s\n",
params.cmdname, params.imagefile, strerror(errno));
exit (EXIT_FAILURE);
}
if (!params.skipcpy) {
if (params.type == IH_TYPE_MULTI ||
params.type == IH_TYPE_SCRIPT) {
char *file = params.datafile;
uint32_t size;
for (;;) {
char *sep = NULL;
if (file) {
if ((sep = strchr(file, ':')) != NULL) {
*sep = '\0';
}
if (stat (file, &sbuf) < 0) {
fprintf (stderr, "%s: Can't stat %s: %s\n",
params.cmdname, file, strerror(errno));
exit (EXIT_FAILURE);
}
size = cpu_to_uimage (sbuf.st_size);
} else {
size = 0;
}
if (write(ifd, (char *)&size, sizeof(size)) != sizeof(size)) {
fprintf (stderr, "%s: Write error on %s: %s\n",
params.cmdname, params.imagefile,
strerror(errno));
exit (EXIT_FAILURE);
}
if (!file) {
break;
}
if (sep) {
*sep = ':';
file = sep + 1;
} else {
file = NULL;
}
}
file = params.datafile;
for (;;) {
char *sep = strchr(file, ':');
if (sep) {
*sep = '\0';
copy_file (ifd, file, 1);
*sep++ = ':';
file = sep;
} else {
copy_file (ifd, file, 0);
break;
}
}
} else if (params.type == IH_TYPE_PBLIMAGE) {
/* PBL has special Image format, implements its' own */
pbl_load_uboot(ifd, &params);
} else if (params.type == IH_TYPE_ZYNQMPBIF) {
/* Image file is meta, walk through actual targets */
int ret;
ret = zynqmpbif_copy_image(ifd, &params);
if (ret)
return ret;
} else if (params.type == IH_TYPE_IMX8IMAGE) {
/* i.MX8/8X has special Image format */
int ret;
ret = imx8image_copy_image(ifd, &params);
if (ret)
return ret;
} else if (params.type == IH_TYPE_IMX8MIMAGE) {
/* i.MX8M has special Image format */
int ret;
ret = imx8mimage_copy_image(ifd, &params);
if (ret)
return ret;
} else if ((params.type == IH_TYPE_RKSD) ||
(params.type == IH_TYPE_RKSPI)) {
/* Rockchip has special Image format */
int ret;
ret = rockchip_copy_image(ifd, &params);
if (ret)
return ret;
} else {
copy_file(ifd, params.datafile, pad_len);
}
if (params.type == IH_TYPE_FIRMWARE_IVT) {
/* Add alignment and IVT */
uint32_t aligned_filesize = ALIGN(params.file_size,
0x1000);
flash_header_v2_t ivt_header = { { 0xd1, 0x2000, 0x40 },
params.addr, 0, 0, 0, params.addr
+ aligned_filesize
- tparams->header_size,
params.addr + aligned_filesize
- tparams->header_size
+ 0x20, 0 };
int i = params.file_size;
for (; i < aligned_filesize; i++) {
if (write(ifd, (char *) &i, 1) != 1) {
fprintf(stderr,
"%s: Write error on %s: %s\n",
params.cmdname,
params.imagefile,
strerror(errno));
exit(EXIT_FAILURE);
}
}
if (write(ifd, &ivt_header, sizeof(flash_header_v2_t))
!= sizeof(flash_header_v2_t)) {
fprintf(stderr, "%s: Write error on %s: %s\n",
params.cmdname,
params.imagefile,
strerror(errno));
exit(EXIT_FAILURE);
}
}
}
/* We're a bit of paranoid */
#if defined(_POSIX_SYNCHRONIZED_IO) && \
!defined(__sun__) && \
!defined(__FreeBSD__) && \
!defined(__OpenBSD__) && \
!defined(__APPLE__)
(void) fdatasync (ifd);
#else
(void) fsync (ifd);
#endif
if (fstat(ifd, &sbuf) < 0) {
fprintf (stderr, "%s: Can't stat %s: %s\n",
params.cmdname, params.imagefile, strerror(errno));
exit (EXIT_FAILURE);
}
params.file_size = sbuf.st_size;
map_len = sbuf.st_size;
ptr = mmap(0, map_len, PROT_READ | PROT_WRITE, MAP_SHARED, ifd, 0);
if (ptr == MAP_FAILED) {
fprintf (stderr, "%s: Can't map %s: %s\n",
params.cmdname, params.imagefile, strerror(errno));
exit (EXIT_FAILURE);
}
/* Setup the image header as per input image type*/
if (tparams->set_header)
tparams->set_header (ptr, &sbuf, ifd, &params);
else {
fprintf (stderr, "%s: Can't set header for %s: %s\n",
params.cmdname, tparams->name, strerror(errno));
exit (EXIT_FAILURE);
}
/* Print the image information by processing image header */
if (tparams->print_header)
tparams->print_header (ptr);
else {
fprintf (stderr, "%s: Can't print header for %s\n",
params.cmdname, tparams->name);
}
(void)munmap((void *)ptr, map_len);
/* We're a bit of paranoid */
#if defined(_POSIX_SYNCHRONIZED_IO) && \
!defined(__sun__) && \
!defined(__FreeBSD__) && \
!defined(__OpenBSD__) && \
!defined(__APPLE__)
(void) fdatasync (ifd);
#else
(void) fsync (ifd);
#endif
if (close(ifd)) {
fprintf (stderr, "%s: Write error on %s: %s\n",
params.cmdname, params.imagefile, strerror(errno));
exit (EXIT_FAILURE);
}
if (tparams->verify_header)
verify_image(tparams);
exit (EXIT_SUCCESS);
}
static void
copy_file (int ifd, const char *datafile, int pad)
{
int dfd;
struct stat sbuf;
unsigned char *ptr;
int tail;
int zero = 0;
uint8_t zeros[4096];
int offset = 0;
int size, ret;
struct image_type_params *tparams = imagetool_get_type(params.type);
memset(zeros, 0, sizeof(zeros));
if (params.vflag) {
fprintf (stderr, "Adding Image %s\n", datafile);
}
if ((dfd = open(datafile, O_RDONLY|O_BINARY)) < 0) {
fprintf (stderr, "%s: Can't open %s: %s\n",
params.cmdname, datafile, strerror(errno));
exit (EXIT_FAILURE);
}
if (fstat(dfd, &sbuf) < 0) {
fprintf (stderr, "%s: Can't stat %s: %s\n",
params.cmdname, datafile, strerror(errno));
exit (EXIT_FAILURE);
}
if (sbuf.st_size == 0) {
fprintf (stderr, "%s: Input file %s is empty, bailing out\n",
params.cmdname, datafile);
exit (EXIT_FAILURE);
}
ptr = mmap(0, sbuf.st_size, PROT_READ, MAP_SHARED, dfd, 0);
if (ptr == MAP_FAILED) {
fprintf (stderr, "%s: Can't read %s: %s\n",
params.cmdname, datafile, strerror(errno));
exit (EXIT_FAILURE);
}
if (params.xflag) {
unsigned char *p = NULL;
/*
* XIP: do not append the image_header_t at the
* beginning of the file, but consume the space
* reserved for it.
*/
if ((unsigned)sbuf.st_size < tparams->header_size) {
fprintf (stderr,
"%s: Bad size: \"%s\" is too small for XIP\n",
params.cmdname, datafile);
exit (EXIT_FAILURE);
}
for (p = ptr; p < ptr + tparams->header_size; p++) {
if ( *p != 0xff ) {
fprintf (stderr,
"%s: Bad file: \"%s\" has invalid buffer for XIP\n",
params.cmdname, datafile);
exit (EXIT_FAILURE);
}
}
offset = tparams->header_size;
}
size = sbuf.st_size - offset;
ret = write(ifd, ptr + offset, size);
if (ret != size) {
if (ret < 0)
fprintf (stderr, "%s: Write error on %s: %s\n",
params.cmdname, params.imagefile, strerror(errno));
else if (ret < size)
fprintf (stderr, "%s: Write only %d/%d bytes, "\
"probably no space left on the device\n",
params.cmdname, ret, size);
exit (EXIT_FAILURE);
}
tail = size % 4;
if ((pad == 1) && (tail != 0)) {
if (write(ifd, (char *)&zero, 4-tail) != 4-tail) {
fprintf (stderr, "%s: Write error on %s: %s\n",
params.cmdname, params.imagefile,
strerror(errno));
exit (EXIT_FAILURE);
}
} else if (pad > 1) {
while (pad > 0) {
int todo = sizeof(zeros);
if (todo > pad)
todo = pad;
if (write(ifd, (char *)&zeros, todo) != todo) {
fprintf(stderr, "%s: Write error on %s: %s\n",
params.cmdname, params.imagefile,
strerror(errno));
exit(EXIT_FAILURE);
}
pad -= todo;
}
}
(void) munmap((void *)ptr, sbuf.st_size);
(void) close (dfd);
}
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