ref: 2cf1e43e8cb87f0b201229548fe76a02548e67f1
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)