ref: 424dea82a52d6d8ca3f16c34d1a5aa8d85a822b4
dir: /sys/include/ar.h/
#define ARMAG "!<arch>\n"
#define SARMAG 8
#define ARFMAG "`\n"
#define SARNAME 16
struct ar_hdr
{
char name[SARNAME];
char date[12];
char uid[6];
char gid[6];
char mode[8];
char size[10];
char fmag[2];
};
#define SAR_HDR (SARNAME+44)