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/**
* Copyright (c) 2021, Marvin Borner <melvix@marvinborner.de>
* SPDX-License-Identifier: MIT
*/
#include <spec.h>
#include <assert.h>
#include <stdio.h>
int main(int argc, char *argv[])
{
// Verify that spec is correct
assert(sizeof(struct marfs_header) == MARFS_ENTRY_SIZE);
assert(sizeof(struct marfs_dir_entry) == MARFS_ENTRY_SIZE);
assert(sizeof(struct marfs_file_entry) == MARFS_ENTRY_SIZE);
if (argc < 2) {
fprintf(stderr, "%s: error: no image specified\n", argv[0]);
return 1;
}
FILE *image = fopen(argv[1], "r+");
if (!image) {
fprintf(stderr, "%s: error: no valid image specified\n", argv[0]);
return 1;
}
struct marfs_header header = {
.magic = MARFS_MAGIC,
.version = MARFS_SPEC_VERSION,
.entry_size = MARFS_ENTRY_SIZE,
.main = MARFS_POINT(1, 1),
.padding = { 0 },
};
fseek(image, 0, SEEK_SET);
size_t write = fwrite(&header, 1, sizeof(header), image);
if (write != sizeof(header))
fprintf(stderr, "%s: error: header write failed: %lu bytes written\n", argv[0],
write);
struct marfs_dir_entry main = {
.header.type = MARFS_DIR_ENTRY,
.header.prev = MARFS_END,
.header.next = MARFS_END,
};
main.entries[0].name[0] = 0;
write = fwrite(&main, 1, sizeof(main), image);
if (write != sizeof(main))
fprintf(stderr, "%s: error: main directory write failed: %lu bytes written\n",
argv[0], write);
fflush(image);
fclose(image);
printf("MarFS format successful\n");
return 0;
}
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