dirfd - phpMan

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), scandir(3), seekdir(3),
       telldir(3)



Linux 2.5                         2002-01-05                          DIRFD(3)

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