mirror of
https://github.com/AsahiLinux/u-boot
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5017f9b595
If parameter -F is given but FIT support is missing, a NULL pointer might dereferenced (Coverity CID 350249). If incorrect parameters are given, provide a message and show usage. Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
820 lines
20 KiB
C
820 lines
20 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* (C) Copyright 2008 Semihalf
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*
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* (C) Copyright 2000-2009
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* DENX Software Engineering
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* Wolfgang Denk, wd@denx.de
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*/
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#include "imagetool.h"
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#include "mkimage.h"
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#include "imximage.h"
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#include <fit_common.h>
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#include <image.h>
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#include <version.h>
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#ifdef __linux__
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#include <sys/ioctl.h>
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#endif
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static void copy_file(int, const char *, int);
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/* parameters initialized by core will be used by the image type code */
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static struct image_tool_params params = {
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.os = IH_OS_LINUX,
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.arch = IH_ARCH_PPC,
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.type = IH_TYPE_KERNEL,
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.comp = IH_COMP_GZIP,
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.dtc = MKIMAGE_DEFAULT_DTC_OPTIONS,
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.imagename = "",
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.imagename2 = "",
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};
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static enum ih_category cur_category;
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static int h_compare_category_name(const void *vtype1, const void *vtype2)
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{
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const int *type1 = vtype1;
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const int *type2 = vtype2;
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const char *name1 = genimg_get_cat_short_name(cur_category, *type1);
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const char *name2 = genimg_get_cat_short_name(cur_category, *type2);
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return strcmp(name1, name2);
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}
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static int show_valid_options(enum ih_category category)
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{
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int *order;
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int count;
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int item;
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int i;
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count = genimg_get_cat_count(category);
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order = calloc(count, sizeof(*order));
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if (!order)
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return -ENOMEM;
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/* Sort the names in order of short name for easier reading */
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for (i = 0, item = 0; i < count; i++, item++) {
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while (!genimg_cat_has_id(category, item) && i < count) {
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item++;
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count--;
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}
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order[i] = item;
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}
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cur_category = category;
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qsort(order, count, sizeof(int), h_compare_category_name);
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fprintf(stderr, "\nInvalid %s, supported are:\n",
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genimg_get_cat_desc(category));
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for (i = 0; i < count; i++) {
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item = order[i];
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fprintf(stderr, "\t%-15s %s\n",
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genimg_get_cat_short_name(category, item),
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genimg_get_cat_name(category, item));
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}
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fprintf(stderr, "\n");
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free(order);
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return 0;
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}
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static void usage(const char *msg)
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{
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fprintf(stderr, "Error: %s\n", msg);
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fprintf(stderr, "Usage: %s [-T type] -l image\n"
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" -l ==> list image header information\n"
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" -T ==> parse image file as 'type'\n",
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params.cmdname);
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fprintf(stderr,
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" %s [-x] -A arch -O os -T type -C comp -a addr -e ep -n name -d data_file[:data_file...] image\n"
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" -A ==> set architecture to 'arch'\n"
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" -O ==> set operating system to 'os'\n"
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" -T ==> set image type to 'type'\n"
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" -C ==> set compression type 'comp'\n"
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" -a ==> set load address to 'addr' (hex)\n"
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" -e ==> set entry point to 'ep' (hex)\n"
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" -n ==> set image name to 'name'\n"
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" -d ==> use image data from 'datafile'\n"
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" -x ==> set XIP (execute in place)\n",
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params.cmdname);
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fprintf(stderr,
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" %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"
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" <dtb> file is used with -f auto, it may occur multiple times.\n",
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params.cmdname);
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fprintf(stderr,
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" -D => set all options for device tree compiler\n"
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" -f => input filename for FIT source\n"
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" -i => input filename for ramdisk file\n"
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" -E => place data outside of the FIT structure\n"
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" -B => align size in hex for FIT structure and header\n");
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#ifdef CONFIG_FIT_SIGNATURE
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fprintf(stderr,
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"Signing / verified boot options: [-k keydir] [-K dtb] [ -c <comment>] [-p addr] [-r] [-N engine]\n"
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" -k => set directory containing private keys\n"
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" -K => write public keys to this .dtb file\n"
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" -G => use this signing key (in lieu of -k)\n"
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" -c => add comment in signature node\n"
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" -F => re-sign existing FIT image\n"
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" -p => place external data at a static position\n"
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" -r => mark keys used as 'required' in dtb\n"
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" -N => openssl engine to use for signing\n");
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#else
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fprintf(stderr,
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"Signing / verified boot not supported (CONFIG_FIT_SIGNATURE undefined)\n");
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#endif
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fprintf(stderr, " %s -V ==> print version information and exit\n",
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params.cmdname);
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fprintf(stderr, "Use '-T list' to see a list of available image types\n");
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exit(EXIT_FAILURE);
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}
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static int add_content(int type, const char *fname)
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{
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struct content_info *cont;
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cont = calloc(1, sizeof(*cont));
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if (!cont)
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return -1;
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cont->type = type;
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cont->fname = fname;
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if (params.content_tail)
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params.content_tail->next = cont;
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else
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params.content_head = cont;
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params.content_tail = cont;
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return 0;
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}
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static void process_args(int argc, char **argv)
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{
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char *ptr;
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int type = IH_TYPE_INVALID;
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char *datafile = NULL;
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int opt;
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while ((opt = getopt(argc, argv,
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"a:A:b:B:c:C:d:D:e:Ef:FG:k:i:K:ln:N:p:o:O:rR:qstT:vVx")) != -1) {
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switch (opt) {
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case 'a':
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params.addr = strtoull(optarg, &ptr, 16);
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if (*ptr) {
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fprintf(stderr, "%s: invalid load address %s\n",
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params.cmdname, optarg);
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exit(EXIT_FAILURE);
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}
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break;
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case 'A':
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params.arch = genimg_get_arch_id(optarg);
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if (params.arch < 0) {
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show_valid_options(IH_ARCH);
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usage("Invalid architecture");
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}
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break;
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case 'b':
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if (add_content(IH_TYPE_FLATDT, optarg)) {
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fprintf(stderr,
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"%s: Out of memory adding content '%s'",
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params.cmdname, optarg);
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exit(EXIT_FAILURE);
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}
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break;
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case 'B':
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params.bl_len = strtoull(optarg, &ptr, 16);
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if (*ptr) {
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fprintf(stderr, "%s: invalid block length %s\n",
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params.cmdname, optarg);
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exit(EXIT_FAILURE);
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}
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break;
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case 'c':
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params.comment = optarg;
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break;
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case 'C':
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params.comp = genimg_get_comp_id(optarg);
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if (params.comp < 0) {
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show_valid_options(IH_COMP);
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usage("Invalid compression type");
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}
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break;
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case 'd':
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params.datafile = optarg;
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params.dflag = 1;
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break;
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case 'D':
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params.dtc = optarg;
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break;
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case 'e':
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params.ep = strtoull(optarg, &ptr, 16);
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if (*ptr) {
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fprintf(stderr, "%s: invalid entry point %s\n",
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params.cmdname, optarg);
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exit(EXIT_FAILURE);
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}
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params.eflag = 1;
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break;
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case 'E':
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params.external_data = true;
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break;
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case 'f':
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datafile = optarg;
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params.auto_its = !strcmp(datafile, "auto");
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/* fallthrough */
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case 'F':
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/*
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* The flattened image tree (FIT) format
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* requires a flattened device tree image type
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*/
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params.type = IH_TYPE_FLATDT;
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params.fflag = 1;
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break;
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case 'G':
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params.keyfile = optarg;
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break;
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case 'i':
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params.fit_ramdisk = optarg;
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break;
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case 'k':
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params.keydir = optarg;
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break;
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case 'K':
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params.keydest = optarg;
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break;
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case 'l':
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params.lflag = 1;
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break;
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case 'n':
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params.imagename = optarg;
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break;
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case 'N':
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params.engine_id = optarg;
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break;
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case 'o':
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params.algo_name = optarg;
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break;
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case 'O':
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params.os = genimg_get_os_id(optarg);
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if (params.os < 0) {
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show_valid_options(IH_OS);
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usage("Invalid operating system");
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}
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break;
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case 'p':
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params.external_offset = strtoull(optarg, &ptr, 16);
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if (*ptr) {
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fprintf(stderr, "%s: invalid offset size %s\n",
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params.cmdname, optarg);
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exit(EXIT_FAILURE);
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}
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break;
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case 'q':
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params.quiet = 1;
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break;
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case 'r':
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params.require_keys = 1;
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break;
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case 'R':
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/*
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* This entry is for the second configuration
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* file, if only one is not enough.
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*/
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params.imagename2 = optarg;
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break;
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case 's':
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params.skipcpy = 1;
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break;
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case 't':
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params.reset_timestamp = 1;
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break;
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case 'T':
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if (strcmp(optarg, "list") == 0) {
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show_valid_options(IH_TYPE);
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exit(EXIT_SUCCESS);
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}
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type = genimg_get_type_id(optarg);
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if (type < 0) {
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show_valid_options(IH_TYPE);
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usage("Invalid image type");
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}
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break;
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case 'v':
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params.vflag++;
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break;
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case 'V':
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printf("mkimage version %s\n", PLAIN_VERSION);
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exit(EXIT_SUCCESS);
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case 'x':
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params.xflag++;
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break;
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default:
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usage("Invalid option");
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}
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}
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/* The last parameter is expected to be the imagefile */
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if (optind < argc)
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params.imagefile = argv[optind];
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/*
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* For auto-generated FIT images we need to know the image type to put
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* in the FIT, which is separate from the file's image type (which
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* will always be IH_TYPE_FLATDT in this case).
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*/
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if (params.type == IH_TYPE_FLATDT) {
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params.fit_image_type = type ? type : IH_TYPE_KERNEL;
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/* For auto_its, datafile is always 'auto' */
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if (!params.auto_its)
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params.datafile = datafile;
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else if (!params.datafile)
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usage("Missing data file for auto-FIT (use -d)");
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} else if (params.lflag || type != IH_TYPE_INVALID) {
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if (type == IH_TYPE_SCRIPT && !params.datafile)
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usage("Missing data file for script (use -d)");
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params.type = type;
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}
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if (!params.imagefile)
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usage("Missing output filename");
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}
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int main(int argc, char **argv)
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{
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int ifd = -1;
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struct stat sbuf;
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char *ptr;
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int retval = 0;
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struct image_type_params *tparams = NULL;
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int pad_len = 0;
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int dfd;
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size_t map_len;
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params.cmdname = *argv;
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params.addr = 0;
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params.ep = 0;
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process_args(argc, argv);
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/* set tparams as per input type_id */
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tparams = imagetool_get_type(params.type);
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if (tparams == NULL && !params.lflag) {
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fprintf (stderr, "%s: unsupported type %s\n",
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params.cmdname, genimg_get_type_name(params.type));
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exit (EXIT_FAILURE);
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}
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/*
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* check the passed arguments parameters meets the requirements
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* as per image type to be generated/listed
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*/
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if (tparams && tparams->check_params)
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if (tparams->check_params (¶ms))
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usage("Bad parameters for image type");
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if (!params.eflag) {
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params.ep = params.addr;
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/* If XIP, entry point must be after the U-Boot header */
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if (params.xflag && tparams)
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params.ep += tparams->header_size;
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}
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if (params.fflag){
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if (!tparams) {
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fprintf(stderr, "%s: Missing FIT support\n",
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params.cmdname);
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exit (EXIT_FAILURE);
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}
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if (tparams->fflag_handle)
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/*
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* in some cases, some additional processing needs
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* to be done if fflag is defined
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*
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* For ex. fit_handle_file for Fit file support
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*/
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retval = tparams->fflag_handle(¶ms);
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if (retval != EXIT_SUCCESS)
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usage("Bad parameters for FIT image type");
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}
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if (params.lflag || params.fflag) {
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ifd = open (params.imagefile, O_RDONLY|O_BINARY);
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} else {
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ifd = open (params.imagefile,
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O_RDWR|O_CREAT|O_TRUNC|O_BINARY, 0666);
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}
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if (ifd < 0) {
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fprintf (stderr, "%s: Can't open %s: %s\n",
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params.cmdname, params.imagefile,
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strerror(errno));
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exit (EXIT_FAILURE);
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}
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if (params.lflag || params.fflag) {
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uint64_t size;
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/*
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* list header information of existing image
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*/
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if (fstat(ifd, &sbuf) < 0) {
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fprintf (stderr, "%s: Can't stat %s: %s\n",
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params.cmdname, params.imagefile,
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strerror(errno));
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exit (EXIT_FAILURE);
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}
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if ((sbuf.st_mode & S_IFMT) == S_IFBLK) {
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#ifdef __linux__
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#if defined(__linux__) && defined(_IOR) && !defined(BLKGETSIZE64)
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#define BLKGETSIZE64 _IOR(0x12,114,size_t) /* return device size in bytes (u64 *arg) */
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#endif
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if (ioctl(ifd, BLKGETSIZE64, &size) < 0) {
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fprintf (stderr,
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"%s: failed to get size of block device \"%s\"\n",
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params.cmdname, params.imagefile);
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exit (EXIT_FAILURE);
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}
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#else
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fprintf (stderr,
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"%s: \"%s\" is block device, don't know how to get its size\n",
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params.cmdname, params.imagefile);
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exit (EXIT_FAILURE);
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#endif
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} else if (tparams && sbuf.st_size < (off_t)tparams->header_size) {
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fprintf (stderr,
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"%s: Bad size: \"%s\" is not valid image: size %llu < %u\n",
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params.cmdname, params.imagefile,
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(unsigned long long) sbuf.st_size,
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tparams->header_size);
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exit (EXIT_FAILURE);
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} else {
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size = sbuf.st_size;
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}
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ptr = mmap(0, size, PROT_READ, MAP_SHARED, ifd, 0);
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if (ptr == MAP_FAILED) {
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fprintf (stderr, "%s: Can't read %s: %s\n",
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params.cmdname, params.imagefile,
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strerror(errno));
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exit (EXIT_FAILURE);
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}
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/*
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* Verifies the header format based on the expected header for image
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* type in tparams. If tparams is NULL simply check all image types
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* to find one that matches our header.
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*/
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retval = imagetool_verify_print_header(ptr, &sbuf, tparams, ¶ms);
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(void) munmap((void *)ptr, sbuf.st_size);
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(void) close (ifd);
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if (!retval)
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summary_show(¶ms.summary, params.imagefile,
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params.keydest);
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exit (retval);
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}
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if ((params.type != IH_TYPE_MULTI) && (params.type != IH_TYPE_SCRIPT)) {
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dfd = open(params.datafile, O_RDONLY | O_BINARY);
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if (dfd < 0) {
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fprintf(stderr, "%s: Can't open %s: %s\n",
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params.cmdname, params.datafile,
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strerror(errno));
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exit(EXIT_FAILURE);
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}
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if (fstat(dfd, &sbuf) < 0) {
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fprintf(stderr, "%s: Can't stat %s: %s\n",
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params.cmdname, params.datafile,
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strerror(errno));
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exit(EXIT_FAILURE);
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}
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params.file_size = sbuf.st_size + tparams->header_size;
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close(dfd);
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}
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/*
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* In case there an header with a variable
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* length will be added, the corresponding
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* function is called. This is responsible to
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* allocate memory for the header itself.
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*/
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if (tparams->vrec_header)
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pad_len = tparams->vrec_header(¶ms, tparams);
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else
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memset(tparams->hdr, 0, tparams->header_size);
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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, ¶ms);
|
|
} else if (params.type == IH_TYPE_ZYNQMPBIF) {
|
|
/* Image file is meta, walk through actual targets */
|
|
int ret;
|
|
|
|
ret = zynqmpbif_copy_image(ifd, ¶ms);
|
|
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, ¶ms);
|
|
if (ret)
|
|
return ret;
|
|
} else if (params.type == IH_TYPE_IMX8MIMAGE) {
|
|
/* i.MX8M has special Image format */
|
|
int ret;
|
|
|
|
ret = imx8mimage_copy_image(ifd, ¶ms);
|
|
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, ¶ms);
|
|
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, ¶ms);
|
|
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);
|
|
}
|
|
|
|
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);
|
|
}
|