images: export cr_fdset_open

Signed-off-by: Andrey Vagin <avagin@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

image.c

@@ -143,7 +143,7 @@ void close_cr_fdset(struct cr_fdset **cr_fdset)
 	*cr_fdset = NULL;
 }
 
-static struct cr_fdset *cr_fdset_open(int pid, int from, int to,
+struct cr_fdset *cr_fdset_open(int pid, int from, int to,
 			       unsigned long flags)
 {
 	struct cr_fdset *fdset;

include/crtools.h

@@ -125,6 +125,8 @@ int cr_exec(int pid, char **opts);
 
 struct cr_fdset *cr_task_fdset_open(int pid, int mode);
 struct cr_fdset *cr_ns_fdset_open(int pid, int mode);
+struct cr_fdset *cr_fdset_open(int pid, int from, int to,
+			       unsigned long flags);
 struct cr_fdset *cr_glob_fdset_open(int mode);
 
 void close_cr_fdset(struct cr_fdset **cr_fdset);