Plan 9 from Bell Labs’s /usr/web/sources/plan9/sys/src/libc/9sys/getwd.c
#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; }