typedef struct __attribute__((packed)) {
    magic32_t magic;      /* 0x0A8590E3 */
    uint32_t file_id;     /* Unique value for each header (Includes 0) */
    uint64_t file_length; /* Total size of the file */
} file_header;
typedef struct __attribute__((packed)) {
    magic32_t magic;       
    uint32_t file_id;      
    uint64_t file_length;  
} file_header;