Colin Cross | ab7c9f1 | 2016-01-14 15:35:40 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2016 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 | |
Yabin Cui | e998a2b | 2018-05-10 17:19:12 -0700 | [diff] [blame] | 17 | #include <errno.h> |
Colin Cross | ab7c9f1 | 2016-01-14 15:35:40 -0800 | [diff] [blame] | 18 | #include <fcntl.h> |
Colin Cross | 401319a | 2017-06-22 10:50:05 -0700 | [diff] [blame] | 19 | #include <inttypes.h> |
Colin Cross | ab7c9f1 | 2016-01-14 15:35:40 -0800 | [diff] [blame] | 20 | #include <string.h> |
Sandeep Patil | 659a20b | 2019-01-30 17:43:22 -0800 | [diff] [blame] | 21 | #include <sys/types.h> |
Colin Cross | ab7c9f1 | 2016-01-14 15:35:40 -0800 | [diff] [blame] | 22 | #include <unistd.h> |
| 23 | |
| 24 | #include <android-base/unique_fd.h> |
Yabin Cui | e998a2b | 2018-05-10 17:19:12 -0700 | [diff] [blame] | 25 | #include <procinfo/process_map.h> |
Colin Cross | ab7c9f1 | 2016-01-14 15:35:40 -0800 | [diff] [blame] | 26 | |
Colin Cross | ab7c9f1 | 2016-01-14 15:35:40 -0800 | [diff] [blame] | 27 | #include "ProcessMappings.h" |
Colin Cross | ab7c9f1 | 2016-01-14 15:35:40 -0800 | [diff] [blame] | 28 | |
Colin Cross | 1fa81f5 | 2017-06-21 13:13:00 -0700 | [diff] [blame] | 29 | namespace android { |
| 30 | |
Yabin Cui | e998a2b | 2018-05-10 17:19:12 -0700 | [diff] [blame] | 31 | struct ReadMapCallback { |
| 32 | ReadMapCallback(allocator::vector<Mapping>& mappings) : mappings_(mappings) {} |
| 33 | |
Sandeep Patil | 659a20b | 2019-01-30 17:43:22 -0800 | [diff] [blame] | 34 | void operator()(uint64_t start, uint64_t end, uint16_t flags, uint64_t, ino_t, |
| 35 | const char* name) const { |
Yabin Cui | e998a2b | 2018-05-10 17:19:12 -0700 | [diff] [blame] | 36 | mappings_.emplace_back(start, end, flags & PROT_READ, flags & PROT_WRITE, flags & PROT_EXEC, |
| 37 | name); |
| 38 | } |
| 39 | |
| 40 | allocator::vector<Mapping>& mappings_; |
| 41 | }; |
| 42 | |
Colin Cross | ab7c9f1 | 2016-01-14 15:35:40 -0800 | [diff] [blame] | 43 | bool ProcessMappings(pid_t pid, allocator::vector<Mapping>& mappings) { |
| 44 | char map_buffer[1024]; |
| 45 | snprintf(map_buffer, sizeof(map_buffer), "/proc/%d/maps", pid); |
Elliott Hughes | 18417e6 | 2016-03-28 12:15:36 -0700 | [diff] [blame] | 46 | android::base::unique_fd fd(open(map_buffer, O_RDONLY)); |
| 47 | if (fd == -1) { |
Colin Cross | ab7c9f1 | 2016-01-14 15:35:40 -0800 | [diff] [blame] | 48 | return false; |
| 49 | } |
Yabin Cui | e998a2b | 2018-05-10 17:19:12 -0700 | [diff] [blame] | 50 | allocator::string content(mappings.get_allocator()); |
| 51 | ssize_t n; |
| 52 | while ((n = TEMP_FAILURE_RETRY(read(fd, map_buffer, sizeof(map_buffer)))) > 0) { |
| 53 | content.append(map_buffer, n); |
Colin Cross | ab7c9f1 | 2016-01-14 15:35:40 -0800 | [diff] [blame] | 54 | } |
Yabin Cui | e998a2b | 2018-05-10 17:19:12 -0700 | [diff] [blame] | 55 | ReadMapCallback callback(mappings); |
| 56 | return android::procinfo::ReadMapFileContent(&content[0], callback); |
Colin Cross | ab7c9f1 | 2016-01-14 15:35:40 -0800 | [diff] [blame] | 57 | } |
Colin Cross | 1fa81f5 | 2017-06-21 13:13:00 -0700 | [diff] [blame] | 58 | |
| 59 | } // namespace android |