#include	<u.h>#include	<libc.h> char*sysname(void){	int f, n;	static char b[128]; 	if(b[0])		return b; 	f = open("#c/sysname", 0);	if(f >= 0) {		n = read(f, b, sizeof(b)-1);		if(n > 0)			b[n] = 0;		close(f);	}	return b;}