1 /** 2 * Copyright (C) 2020 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #ifdef __cplusplus 18 extern "C" { 19 #endif /* __cplusplus */ 20 #define MAX_ENTRIES (32 * 1024) 21 #define INITIAL_VAL 0xBE 22 23 #define ENABLE_NONE 0x00 24 #define ENABLE_MEMALIGN_CHECK 0x01 25 #define ENABLE_MALLOC_CHECK 0x02 26 #define ENABLE_CALLOC_CHECK 0x04 27 #define ENABLE_ALL ENABLE_MEMALIGN_CHECK | ENABLE_MALLOC_CHECK |\ 28 ENABLE_CALLOC_CHECK 29 30 typedef struct { 31 void *mem_ptr; 32 size_t mem_size; 33 } allocated_memory_struct; 34 35 static bool s_memutils_initialized = false; 36 static int s_allocation_index = 0; 37 static allocated_memory_struct s_allocation_list[MAX_ENTRIES] = { { 0, 0 } }; 38 39 extern bool is_tracking_required(size_t size); 40 static void* (*real_memalign)(size_t, size_t) = NULL; 41 static void* (*real_malloc)(size_t) = NULL; 42 static void (*real_free)(void *) = NULL; 43 44 #ifdef ENABLE_SELECTIVE_OVERLOADING 45 extern char enable_selective_overload; 46 #endif /* ENABLE_SELECTIVE_OVERLOADING */ 47 48 #ifdef CHECK_MEMORY_LEAK 49 static void* (*real_calloc)(size_t, size_t) = NULL; 50 void exit_vulnerable_if_memory_leak_detected(void); 51 #endif 52 53 #ifdef CHECK_UNINITIALIZED_MEMORY 54 extern bool is_memory_uninitialized(); 55 #endif 56 57 #ifdef __cplusplus 58 } 59 #endif /* __cplusplus */ 60