ref: e0c3f9002a4a713fcb22fd32b1cb4a02eca48b62
dir: /sys/src/libc/9sys/getwd.c/
#include <u.h>
#include <libc.h>
char*
getwd(char *buf, int nbuf)
{
int n, fd;
fd = open(".", OREAD|OCEXEC);
if(fd < 0)
return nil;
n = fd2path(fd, buf, nbuf);
close(fd);
if(n < 0)
return nil;
return buf;
}