546   struct tar_hdr tar;  in unpack_tar()  local
553       memcpy(&tar, first, i = 512);  in unpack_tar()
558       i = readall(TT.fd, &tar, 512);  in unpack_tar()
564     if (!i || !*tar.name) {  in unpack_tar()
570     tar.padd[0] = and = 0;  in unpack_tar()
573     if (!is_tar_header(&tar)) error_exit("bad header");  in unpack_tar()
574     TT.hdr.size = OTOI(tar.size);  in unpack_tar()
577     if ((tar.type<'0' || tar.type>'7') && tar.type!='S'  in unpack_tar()
578         && (*tar.magic && tar.type))  in unpack_tar()
581       if (tar.type == 'K') alloread(&TT.hdr.link_target, TT.hdr.size);  in unpack_tar()
582       else if (tar.type == 'L') alloread(&TT.hdr.name, TT.hdr.size);  in unpack_tar()
583       else if (tar.type == 'x') {  in unpack_tar()
610     if (tar.type == 'S') {  in unpack_tar()
617       s = 386+(char *)&tar;  in unpack_tar()
626           if (!(*sparse ? sparse[504] : ((char *)&tar)[482])) break;  in unpack_tar()
646     TT.hdr.mode = OTOI(tar.mode)&0xfff;  in unpack_tar()
647     if (tar.type == 'S' || !tar.type) TT.hdr.mode |= 0x8000;  in unpack_tar()
648     else TT.hdr.mode |= (char []){8,8,10,2,6,4,1,8}[tar.type-'0']<<12;  in unpack_tar()
649     TT.hdr.uid = OTOI(tar.uid);  in unpack_tar()
650     TT.hdr.gid = OTOI(tar.gid);  in unpack_tar()
651     TT.hdr.mtime = OTOI(tar.mtime);  in unpack_tar()
652     maj = OTOI(tar.major);  in unpack_tar()
653     min = OTOI(tar.minor);  in unpack_tar()
655     TT.hdr.uname = xstrndup(TT.owner ? TT.owner : tar.uname, sizeof(tar.uname));  in unpack_tar()
656     TT.hdr.gname = xstrndup(TT.group ? TT.group : tar.gname, sizeof(tar.gname));  in unpack_tar()
670     if (!TT.hdr.link_target && *tar.link)  in unpack_tar()
671       TT.hdr.link_target = xstrndup(tar.link, sizeof(tar.link));  in unpack_tar()
674       i = (tar.type=='S') ? 0 : strnlen(tar.prefix, sizeof(tar.prefix));  in unpack_tar()
675       TT.hdr.name = xmprintf("%.*s%s%.*s", i, tar.prefix,  in unpack_tar()
676         (i && tar.prefix[i-1] != '/') ? "/" : "",  in unpack_tar()
677         (int)sizeof(tar.name), tar.name);  in unpack_tar()
688       || (tar.type && !S_ISREG(TT.hdr.mode)))  in unpack_tar()
721         if (tar.type=='3' || tar.type=='4') printf("%u,%u", maj, min);  in unpack_tar()