rulimine/qloader2-install.c

58 lines
1.3 KiB
C

#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <stddef.h>
#include <inttypes.h>
int main(int argc, char *argv[]) {
if (argc < 3) {
printf("Usage: %s <path to qloader2 binary> <device> [stage2 start sector]\n", argv[0]);
return 1;
}
FILE *ql2_bin = fopen(argv[1], "rb");
if (ql2_bin == NULL) {
perror("Error: ");
return 1;
}
FILE *device = fopen(argv[2], "r+b");
if (device == NULL) {
perror("Error: ");
fclose(ql2_bin);
return 1;
}
uint32_t stage2_sect = 1;
if (argc >= 4)
sscanf(argv[3], "%" SCNu32, &stage2_sect);
char orig_mbr[64];
fseek(device, 446, SEEK_SET);
fread(orig_mbr, 1, 64, device);
char ql2_bootsect[512];
fseek(ql2_bin, 0, SEEK_SET);
fread(ql2_bootsect, 1, 512, ql2_bin);
fseek(device, 0, SEEK_SET);
fwrite(ql2_bootsect, 1, 512, device);
char *ql2_stage2 = malloc(63 * 512);
fseek(ql2_bin, 512, SEEK_SET);
fread(ql2_stage2, 63, 512, ql2_bin);
fseek(device, stage2_sect * 512, SEEK_SET);
fwrite(ql2_stage2, 63, 512, device);
free(ql2_stage2);
fseek(device, 0x1b0, SEEK_SET);
fwrite(&stage2_sect, 1, 4, device);
fseek(device, 446, SEEK_SET);
fwrite(orig_mbr, 1, 64, device);
fclose(ql2_bin);
fclose(device);
return 0;
}