1 /* 2 * Copyright (C) 2011 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 /* Process memory map. */ 18 19 #ifndef _CORKSCREW_MAP_INFO_H 20 #define _CORKSCREW_MAP_INFO_H 21 22 #include <sys/types.h> 23 #include <stdbool.h> 24 #include <stdint.h> 25 26 #ifdef __cplusplus 27 extern "C" { 28 #endif 29 30 typedef struct map_info { 31 struct map_info* next; 32 uintptr_t start; 33 uintptr_t end; 34 bool is_readable; 35 bool is_writable; 36 bool is_executable; 37 void* data; // arbitrary data associated with the map by the user, initially NULL 38 char name[]; 39 } map_info_t; 40 41 /* Loads memory map from /proc/<tid>/maps. */ 42 map_info_t* load_map_info_list(pid_t tid); 43 44 /* Frees memory map. */ 45 void free_map_info_list(map_info_t* milist); 46 47 /* Finds the memory map that contains the specified address. */ 48 const map_info_t* find_map_info(const map_info_t* milist, uintptr_t addr); 49 50 /* Returns true if the addr is in a readable map. */ 51 bool is_readable_map(const map_info_t* milist, uintptr_t addr); 52 /* Returns true if the addr is in a writable map. */ 53 bool is_writable_map(const map_info_t* milist, uintptr_t addr); 54 /* Returns true if the addr is in an executable map. */ 55 bool is_executable_map(const map_info_t* milist, uintptr_t addr); 56 57 /* Acquires a reference to the memory map for this process. 58 * The result is cached and refreshed automatically. 59 * Make sure to release the map info when done. */ 60 map_info_t* acquire_my_map_info_list(); 61 62 /* Releases a reference to the map info for this process that was 63 * previous acquired using acquire_my_map_info_list(). */ 64 void release_my_map_info_list(map_info_t* milist); 65 66 /* Flushes the cached memory map so the next call to 67 * acquire_my_map_info_list() gets fresh data. */ 68 void flush_my_map_info_list(); 69 70 #ifdef __cplusplus 71 } 72 #endif 73 74 #endif // _CORKSCREW_MAP_INFO_H 75
