/* * efi compliant (type 1) guid generation */#include <u.h>#include <libc.h>#include <ip.h>#include "efi.h" /* * ebase is the number of 100ns intervals between Epoch and * midnight, 15. okt 1582, an obvious choice. */enum{	Ebase	= 0x01B21DD213814000LL,	Version	= 1,	Variant	= 4<<1,	Clockid	= 0,}; enum{	Esystem,	Elegacy,}; uchar efisystem[] = {	0xc1, 0x2a, 0x73, 0x28, 0xf8, 0x1f, 0x11, 0xd2, 	0xba, 0x4b, 0x00, 0xa0, 0xc9, 0x3e, 0xc9, 0x3b,}; uchar efilegacy[] = {	0x02, 0x4d, 0xee, 0x41, 0x33, 0xe7, 0x11, 0xd3, 	0x9d, 0x69, 0x00, 0x08, 0xc7, 0x81, 0xf3, 0x9f, }; static uvlongefitime(void){	return nsec()/100+Ebase;} uchar*nilgid(uchar *buf){	memset(buf, 0, 16);	return buf;} uchar*efigid(uchar *u){	uvlong t; 	t = efitime();	u[0] = t>>24;	u[1] = t>>16;	u[2] = t>>8;	u[3] = t;	u[4] = t>>40;	u[5] = t>>32;	u[6] = Version<<4|t>>56&0xf;	u[7] = t>>48;	u[8] = Variant<<4|Clockid>>8&0xf;	u[9] = Clockid;	myetheraddr(u+10, "ether0");	return u;} static char dash[] = "123-5-7-9-bcdef0"; intUfmt(Fmt *f){	uchar *u;	char buf[16*2+4+1], *p, *e;	int i; 	u = va_arg(f->args, uchar*);	p = buf;	e = p+sizeof buf;	for(i = 0; i<16; i++){		p = seprint(p, e, "%.2ux", u[i]);		if(dash[i] == '-')			p = seprint(p, e, "-");	}	return fmtstrcpy(f, buf);}