1 // Copyright (C) 2016 The Android Open Source Project 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); 4 // you may not use this file except in compliance with the License. 5 // You may obtain a copy of the License at 6 // 7 // http://www.apache.org/licenses/LICENSE-2.0 8 // 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, 11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 // See the License for the specific language governing permissions and 13 // limitations under the License. 14 15 #include <unistd.h> 16 17 #include <map> 18 #include <sstream> 19 #include <string> 20 21 #include <android-base/file.h> 22 #include <android-base/logging.h> 23 #include <android-base/strings.h> 24 25 void Usage(char* argv[]) { 26 printf("Usage: %s <status field> <value> [<status field> <value>]*\n", argv[0]); 27 printf("E.g.: $ %s Uid \"1000 1000 1000 1000\"\n", argv[0]); 28 } 29 30 int main(int argc, char* argv[]) { 31 if (argc < 3) { 32 Usage(argv); 33 LOG(FATAL) << "no status field requested"; 34 } 35 if (argc % 2 == 0) { 36 // Since |argc| counts argv[0], if |argc| is odd, then the number of 37 // command-line arguments is even. 38 Usage(argv); 39 LOG(FATAL) << "need even number of command-line arguments"; 40 } 41 42 std::string status; 43 bool res = android::base::ReadFileToString("/proc/self/status", &status, true); 44 if (!res) { 45 PLOG(FATAL) << "could not read /proc/self/status"; 46 } 47 48 std::map<std::string, std::string> fields; 49 std::vector<std::string> lines = android::base::Split(status, "\n"); 50 for (const auto& line : lines) { 51 std::vector<std::string> tokens = android::base::Split(line, ":"); 52 if (tokens.size() >= 2) { 53 std::string field = tokens[0]; 54 std::string value = android::base::Trim(tokens[1]); 55 if (field.length() > 0) { 56 fields[field] = value; 57 } 58 } 59 } 60 61 bool test_fails = false; 62 size_t uargc = static_cast<size_t>(argc); // |argc| >= 3. 63 for (size_t i = 1; i < static_cast<size_t>(argc); i = i + 2) { 64 std::string expected_value = argv[i + 1]; 65 auto f = fields.find(argv[i]); 66 if (f != fields.end()) { 67 if (f->second != expected_value) { 68 LOG(ERROR) << "field '" << argv[i] << "' expected '" << expected_value 69 << "', actual '" << f->second << "'"; 70 test_fails = true; 71 } 72 } else { 73 LOG(WARNING) << "could not find field '" << argv[i] << "'"; 74 } 75 } 76 77 return test_fails ? 1 : 0; 78 } 79
