Mark internal dirent functions hidden

Since internal dirent functions are only used internally in ld.so and
libc.so, they can be made hidden.

	[BZ #19122]
	* include/dirent.h (__opendirat): Add attribute_hidden.
	(__getdents): Likewise.
	(__getdents64): Likewise.
	(__alloc_dir): Likewise.
	[IS_IN (rtld)] (__closedir): Likewise.
	[IS_IN (rtld)] (__fdopendir): Likewise.
	[IS_IN (rtld)] (__readdir): Likewise.
	[IS_IN (rtld)] (__readdir64): Likewise.
	[IS_IN (rtld)] (__rewinddir): Likewise.

ChangeLog

@@ -1,6 +1,16 @@
 2015-10-15  H.J. Lu  <hongjiu.lu@intel.com>
 
 	[BZ #19122]
+	* include/dirent.h (__opendirat): Add attribute_hidden.
+	(__getdents): Likewise.
+	(__getdents64): Likewise.
+	(__alloc_dir): Likewise.
+	[IS_IN (rtld)] (__closedir): Likewise.
+	[IS_IN (rtld)] (__fdopendir): Likewise.
+	[IS_IN (rtld)] (__readdir): Likewise.
+	[IS_IN (rtld)] (__readdir64): Likewise.
+	[IS_IN (rtld)] (__rewinddir): Likewise.
+
 	* include/dlfcn.h (_dl_catch_error): Moved to ...
 	* sysdeps/generic/ldsodefs.h (_dl_catch_error): Add
 	attribute_hidden.

include/dirent.h

@@ -16,7 +16,8 @@ struct scandir_cancel_struct
 
 /* Now define the internal interfaces.  */
 extern DIR *__opendir (const char *__name);
-extern DIR *__opendirat (int dfd, const char *__name) internal_function;
+extern DIR *__opendirat (int dfd, const char *__name)
+     internal_function attribute_hidden;
 extern DIR *__fdopendir (int __fd);
 extern int __closedir (DIR *__dirp);
 extern struct dirent *__readdir (DIR *__dirp);
@@ -35,17 +36,17 @@ extern __ssize_t __getdirentries (int __fd, char *__restrict __buf,
 				__off_t *__restrict __basep)
      __THROW __nonnull ((2, 4));
 extern __ssize_t __getdents (int __fd, char *__buf, size_t __nbytes)
-     internal_function;
+     internal_function attribute_hidden;
 extern __ssize_t __getdents64 (int __fd, char *__buf, size_t __nbytes)
-     internal_function;
+     internal_function attribute_hidden;
 extern int __alphasort64 (const struct dirent64 **a, const struct dirent64 **b)
      __attribute_pure__;
 extern int __versionsort64 (const struct dirent64 **a,
 			    const struct dirent64 **b)
      __attribute_pure__;
 extern DIR *__alloc_dir (int fd, bool close_fd, int flags,
 			 const struct stat64 *statp)
-     internal_function;
+     internal_function attribute_hidden;
 extern __typeof (rewinddir) __rewinddir;
 
 extern void __scandir_cancel_handler (void *arg) attribute_hidden;
@@ -74,6 +75,14 @@ libc_hidden_proto (__rewinddir)
 extern __typeof (scandirat) __scandirat;
 libc_hidden_proto (__scandirat)
 libc_hidden_proto (scandirat64)
+
+#  if IS_IN (rtld)
+extern __typeof (__closedir) __closedir attribute_hidden;
+extern __typeof (__fdopendir) __fdopendir attribute_hidden;
+extern __typeof (__readdir) __readdir attribute_hidden;
+extern __typeof (__readdir64) __readdir64 attribute_hidden;
+extern __typeof (__rewinddir) __rewinddir attribute_hidden;
+#  endif
 # endif
 
 #endif