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/*
* Disk image splitter
*
* Copyright (c) 2016 Fabrice Bellard
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include <stdlib.h>
#include <stdio.h>
#include <inttypes.h>
#include <string.h>
#include <ctype.h>
#include <getopt.h>
int main(int argc, char **argv)
{
int blocksize, ret, i;
const char *infilename, *outpath;
FILE *f, *fo;
char buf1[1024];
uint8_t *buf;
if ((optind + 1) >= argc) {
printf("splitimg version " CONFIG_VERSION ", Copyright (c) 2011-2016 Fabrice Bellard\n"
"usage: splitimg infile outpath [blocksize]\n"
"Create a multi-file disk image for the RISCVEMU HTTP block device\n"
"\n"
"outpath must be a directory\n"
"blocksize is the block size in KB\n");
exit(1);
}
infilename = argv[optind++];
outpath = argv[optind++];
blocksize = 256;
if (optind < argc)
blocksize = strtol(argv[optind++], NULL, 0);
blocksize *= 1024;
buf = malloc(blocksize);
f = fopen(infilename, "rb");
if (!f) {
perror(infilename);
exit(1);
}
i = 0;
for(;;) {
ret = fread(buf, 1, blocksize, f);
if (ret < 0) {
perror("fread");
exit(1);
}
if (ret == 0)
break;
if (ret < blocksize) {
printf("warning: last block is not full\n");
memset(buf + ret, 0, blocksize - ret);
}
snprintf(buf1, sizeof(buf1), "%s/blk%09u.bin", outpath, i);
fo = fopen(buf1, "wb");
if (!fo) {
perror(buf1);
exit(1);
}
fwrite(buf, 1, blocksize, fo);
fclose(fo);
i++;
}
fclose(f);
printf("%d blocks\n", i);
snprintf(buf1, sizeof(buf1), "%s/blk.txt", outpath);
fo = fopen(buf1, "wb");
if (!fo) {
perror(buf1);
exit(1);
}
fprintf(fo, "{\n");
fprintf(fo, " block_size: %d,\n", blocksize / 1024);
fprintf(fo, " n_block: %d,\n", i);
fprintf(fo, "}\n");
fclose(fo);
return 0;
}
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