PNaCl Dynamic Linking: Added portable dependencies to shared objects.

src/untrusted/pll_loader/pll_loader.h

 // Copyright 2016 The Native Client Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef NATIVE_CLIENT_SRC_UNTRUSTED_PLL_LOADER_PLL_LOADER_H_
 #define NATIVE_CLIENT_SRC_UNTRUSTED_PLL_LOADER_PLL_LOADER_H_ 1
 
 #include <string>
 #include <unordered_set>
 #include <vector>
@@ skipping 29 matching lines @@
 
  private:
   const PLLRoot *root_;
 };
 
 // ModuleSet represents a set of loaded PLLs.
 class ModuleSet {
  public:
   // Load a PLL by filename. Does not add the filename to a known set of loaded
   // modules, and will not de-duplicate loading modules.
-  void AddByFilename(const char *filename);
+  // Returns a pointer to the PLL's pso_root.
+  PLLRoot *AddByFilename(const char *filename);
 
   // Change the search path used by the linker when looking for PLLs by soname.
   void SetSonameSearchPath(const std::vector<std::string> &dir_list);
 
   // Load a PLL by soname and add the soname to the set of loaded modules.
-  void AddBySoname(const char *soname);
+  // Returns a pointer to the PLL's pso_root if it is loaded, NULL otherwise.
+  PLLRoot *AddBySoname(const char *soname);
 
   // Looks up a symbol in the set of modules.  This does a linear search of
   // the modules, in the order that they were added using AddByFilename().
   void *GetSym(const char *name);
 
   // Applies relocations to the modules, resolving references between them.
   void ResolveRefs();
 
  private:
   // The search path used to look for "sonames".
   std::vector<std::string> search_path_;
   // An unordered set of "sonames" (to see if a module has been loaded).
   std::unordered_set<std::string> sonames_;
   std::vector<PLLModule> modules_;
 };
 
 #endif