Make dirfd() publically available. It used on other systems as well it seems.

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@26466 a95241bf-73f2-0310-859d-f6bbb57e9c96

headers/posix/dirent.h

@@ -40,6 +40,9 @@ void			rewinddir(DIR *dir);
 void 			seekdir(DIR *dir, long int loc);
 long int		telldir(DIR *);
 
+/* Non-POSIX extension to get the FD out of the private DIR */
+int				dirfd(DIR *dir);
+
 #ifdef __cplusplus
 }
 #endif

src/system/libroot/posix/dirent.c

@@ -120,18 +120,8 @@ rewinddir(DIR *dir)
 }
 
 
-#ifndef _KERNEL_MODE
-
-/* This is no POSIX compatible call; it's not exported in the headers
- * but here for BeOS compatiblity.
- */
-
-int dirfd(DIR *dir);
-
 int
 dirfd(DIR *dir)
 {
 	return dir->fd;
 }
-
-#endif	// !_KERNEL_MODE