1 files changed, 40 insertions, 0 deletions
diff --git a/linker/linker_namespaces.cpp b/linker/linker_namespaces.cpp
index 3c86f9984..9fdf0b51c 100644
--- a/linker/linker_namespaces.cpp
+++ b/linker/linker_namespaces.cpp
@@ -31,6 +31,8 @@
 #include "linker_soinfo.h"
 #include "linker_utils.h"
 
+#include <dlfcn.h>
+
 bool android_namespace_t::is_accessible(const std::string& file) {
   if (!is_isolated_) {
     return true;
@@ -86,3 +88,41 @@ bool android_namespace_t::is_accessible(soinfo* s) {
     return !is_accessible_ftor(si);
   });
 }
+
+// TODO: this is slightly unusual way to construct
+// the global group for relocation. Not every RTLD_GLOBAL
+// library is included in this group for backwards-compatibility
+// reasons.
+//
+// This group consists of the main executable, LD_PRELOADs
+// and libraries with the DF_1_GLOBAL flag set.
+soinfo_list_t android_namespace_t::get_global_group() {
+  soinfo_list_t global_group;
+  soinfo_list().for_each([&](soinfo* si) {
+    if ((si->get_dt_flags_1() & DF_1_GLOBAL) != 0) {
+      global_group.push_back(si);
+    }
+  });
+
+  return global_group;
+}
+
+// This function provides a list of libraries to be shared
+// by the namespace. For the default namespace this is the global
+// group (see get_global_group). For all others this is a group
+// of RTLD_GLOBAL libraries (which includes the global group from
+// the default namespace).
+soinfo_list_t android_namespace_t::get_shared_group() {
+  if (this == &g_default_namespace) {
+    return get_global_group();
+  }
+
+  soinfo_list_t shared_group;
+  soinfo_list().for_each([&](soinfo* si) {
+    if ((si->get_rtld_flags() & RTLD_GLOBAL) != 0) {
+      shared_group.push_back(si);
+    }
+  });
+
+  return shared_group;
+}