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
27extern "C" {
28#endif
29
30typedef struct map_info {
31    struct map_info* next;
32    uintptr_t start;
33    uintptr_t end;
34    bool is_readable;
35    bool is_executable;
36    void* data; // arbitrary data associated with the map by the user, initially NULL
37    char name[];
38} map_info_t;
39
40/* Loads memory map from /proc/<tid>/maps. */
41map_info_t* load_map_info_list(pid_t tid);
42
43/* Frees memory map. */
44void free_map_info_list(map_info_t* milist);
45
46/* Finds the memory map that contains the specified address. */
47const map_info_t* find_map_info(const map_info_t* milist, uintptr_t addr);
48
49/* Returns true if the addr is in an readable map. */
50bool is_readable_map(const map_info_t* milist, uintptr_t addr);
51
52/* Returns true if the addr is in an executable map. */
53bool is_executable_map(const map_info_t* milist, uintptr_t addr);
54
55/* Acquires a reference to the memory map for this process.
56 * The result is cached and refreshed automatically.
57 * Make sure to release the map info when done. */
58map_info_t* acquire_my_map_info_list();
59
60/* Releases a reference to the map info for this process that was
61 * previous acquired using acquire_my_map_info_list(). */
62void release_my_map_info_list(map_info_t* milist);
63
64#ifdef __cplusplus
65}
66#endif
67
68#endif // _CORKSCREW_MAP_INFO_H
69