dirfd (3)

NAME

       dirfd - get directory stream file descriptor

SYNOPSIS

       #include <sys/types.h>
       #include <dirent.h>

       int dirfd(DIR *dir);

DESCRIPTION

       The  function  dirfd()  returns the file descriptor associated with the
       directory stream dir.

ERRORS

       On error -1 is returned.

NOTES

       The  prototype  for  dirfd  is  only  available   if   _BSD_SOURCE   or
       _SVID_SOURCE  is  defined  (either  explicitly,  or  implicitly, by not
       defining _POSIX_SOURCE or compiling with the -ansi flag).

CONFORMING TO

       This is a  BSD  extension,  present  in  4.3BSD-Reno,  not  in  4.2BSD.
       Present in libc5 (since 5.1.2) and in glibc2.

SEE ALSO

       open(2), closedir(3), opendir(3), readdir(3), rewinddir(3), scandir(3),
       seekdir(3), telldir(3)

Linux 2.5                         2002-01-05                          dirfd(3)