80 lines
1.7 KiB
C
80 lines
1.7 KiB
C
#include "../fs/fs.h"
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#include <stdio.h>
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#include <string.h>
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char* basename(char* path) {
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char* c = strrchr(path, '/');
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if (c && *c) {
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return c + 1;
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}
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return path;
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}
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int main(int argc, char* argv[]) {
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char sector[sector_size];
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struct dir dir = {{0}};
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if (argc < 3) {
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fprintf(stderr, "Usage: %s OUT.FS KERNEL.BIN [FILES...]\n", argv[0]);
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return 1;
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}
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FILE* image = fopen(argv[1], "wb");
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if (!image) {
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perror(argv[1]);
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return 1;
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}
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if (fwrite(&dir, sizeof(dir), 1, image) < 1) {
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perror("fwrite");
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return 1;
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}
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uint32_t sector_offset = 1;
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for (int i = 2; i < argc; ++i) {
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char* name = argv[i];
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struct dirent *dirent = &dir.entries[i-2];
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dirent->offset_sectors = sector_offset;
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dirent->size_bytes = 0;
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FILE* file = fopen(name, "rb");
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if (!file) {
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perror(name);
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return 1;
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}
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size_t read_size;
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while ((read_size = fread(sector, 1, sizeof(sector), file))) {
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if (fwrite(sector, 1, sizeof(sector), image) != sizeof(sector)) {
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perror(name);
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return 1;
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}
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sector_offset++;
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dirent->size_bytes += read_size;
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}
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if (fclose(file)) {
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perror(name);
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return 1;
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}
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dirent->reserved = 0;
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dirent->name[sizeof(dirent->name) - 1] = '\0';
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strncpy(dirent->name, basename(name), sizeof(dirent->name) - 1);
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}
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fseek(image, 0, SEEK_SET);
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if (fwrite(&dir, sizeof(dir), 1, image) < 1) {
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perror("fwrite");
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return 1;
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}
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if (fclose(image)) {
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perror(argv[0]);
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return 1;
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}
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return 0;
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}
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