dirfd

DIRFD(3)		  Linux Programmer’s Manual		     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.

       This descriptor is the one used internally by  the  directory  stream.
       As a result, it is only useful for functions which do not depend on or
       alter the file position, such as fstat(2) and fchdir(2).	 It  will  be
       automatically closed when closedir(3) is called.

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),	scan-
       dir(3), seekdir(3), telldir(3)



Linux 2.5			  2002-01-05			     DIRFD(3)