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