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      1 /*
      2  * Copyright (C) 2016 The Android Open Source Project
      3  * All rights reserved.
      4  *
      5  * Redistribution and use in source and binary forms, with or without
      6  * modification, are permitted provided that the following conditions
      7  * are met:
      8  *  * Redistributions of source code must retain the above copyright
      9  *    notice, this list of conditions and the following disclaimer.
     10  *  * Redistributions in binary form must reproduce the above copyright
     11  *    notice, this list of conditions and the following disclaimer in
     12  *    the documentation and/or other materials provided with the
     13  *    distribution.
     14  *
     15  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     16  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     17  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
     18  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
     19  * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
     20  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
     21  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
     22  * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
     23  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
     24  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
     25  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     26  * SUCH DAMAGE.
     27  */
     28 
     29 #pragma once
     30 
     31 #include <android/dlext.h>
     32 #include "linked_list.h"
     33 
     34 #include <android-base/macros.h>
     35 
     36 // TODO(dimitry): move this to linker_defines.h? Unless it is removed by
     37 // consequent refactoring steps.
     38 
     39 // Android uses RELA for aarch64 and x86_64. mips64 still uses REL.
     40 #if defined(__aarch64__) || defined(__x86_64__)
     41 #define USE_RELA 1
     42 #endif
     43 
     44 
     45 struct soinfo;
     46 
     47 class SoinfoListAllocator {
     48  public:
     49   static LinkedListEntry<soinfo>* alloc();
     50   static void free(LinkedListEntry<soinfo>* entry);
     51 
     52  private:
     53   // unconstructable
     54   DISALLOW_IMPLICIT_CONSTRUCTORS(SoinfoListAllocator);
     55 };
     56 
     57 class NamespaceListAllocator {
     58  public:
     59   static LinkedListEntry<android_namespace_t>* alloc();
     60   static void free(LinkedListEntry<android_namespace_t>* entry);
     61 
     62  private:
     63   // unconstructable
     64   DISALLOW_IMPLICIT_CONSTRUCTORS(NamespaceListAllocator);
     65 };
     66 
     67 typedef LinkedList<soinfo, SoinfoListAllocator> soinfo_list_t;
     68 typedef LinkedList<android_namespace_t, NamespaceListAllocator> android_namespace_list_t;
     69