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-rw-r--r--libio/libioP.h15
1 files changed, 15 insertions, 0 deletions
diff --git a/libio/libioP.h b/libio/libioP.h
index 59d20cd4be..090f98a02d 100644
--- a/libio/libioP.h
+++ b/libio/libioP.h
@@ -313,6 +313,10 @@ struct _IO_FILE_plus
   const struct _IO_jump_t *vtable;
 };
 
+/* Iterator type for walking global linked list of _IO_FILE objects. */
+
+typedef _IO_FILE *_IO_ITER;
+
 /* Generic functions */
 
 extern void _IO_switch_to_main_get_area __P ((_IO_FILE *));
@@ -351,6 +355,17 @@ extern int _IO_wmarker_delta __P ((struct _IO_marker *));
 extern int _IO_seekmark __P ((_IO_FILE *, struct _IO_marker *, int));
 extern int _IO_seekwmark __P ((_IO_FILE *, struct _IO_marker *, int));
 
+/* Functions for iterating global list and dealing with
+   its lock */
+
+extern _IO_ITER _IO_iter_begin __P ((void));
+extern _IO_ITER _IO_iter_end __P ((void));
+extern _IO_ITER _IO_iter_next __P ((_IO_ITER));
+extern _IO_FILE *_IO_iter_file __P ((_IO_ITER));
+extern void _IO_list_lock __P ((void));
+extern void _IO_list_unlock __P ((void));
+extern void _IO_list_resetlock __P ((void));
+
 /* Default jumptable functions. */
 
 extern int _IO_default_underflow __P ((_IO_FILE *));