ref: 8dcf65f21e079f471eef6d3b3d0360c7beac4cd6
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; }