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 33 #include <unordered_map> 34 #include <vector> 35 36 #include "linker_namespaces.h" 37 #include "linker_soinfo.h" 38 39 class ProtectedDataGuard { 40 public: 41 ProtectedDataGuard(); 42 ~ProtectedDataGuard(); 43 44 private: 45 void protect_data(int protection); 46 static size_t ref_count_; 47 }; 48 49 class ElfReader; 50 51 void init_sanitizer_mode(const char *interp); 52 std::vector<android_namespace_t*> init_default_namespaces(const char* executable_path); 53 soinfo* soinfo_alloc(android_namespace_t* ns, const char* name, 54 const struct stat* file_stat, off64_t file_offset, 55 uint32_t rtld_flags); 56 57 bool find_libraries(android_namespace_t* ns, 58 soinfo* start_with, 59 const char* const library_names[], 60 size_t library_names_count, 61 soinfo* soinfos[], 62 std::vector<soinfo*>* ld_preloads, 63 size_t ld_preloads_count, 64 int rtld_flags, 65 const android_dlextinfo* extinfo, 66 bool add_as_children, 67 std::vector<android_namespace_t*>* namespaces = nullptr); 68 69 void solist_add_soinfo(soinfo* si); 70 bool solist_remove_soinfo(soinfo* si); 71 soinfo* solist_get_head(); 72 soinfo* solist_get_somain(); 73 soinfo* solist_get_vdso(); 74 75 void linker_memcpy(void* dst, const void* src, size_t n); 76