#include <u.h>#include <libc.h> static char *nsgetwd(char*, int); char*getwd(char *buf, int nbuf){	int n, fd; 	fd = open(".", OREAD);	if(fd < 0)		return nil;	n = fd2path(fd, buf, nbuf);	close(fd);	if(n < 0)		return nil;	return buf;}