49 bool ReadFileToString(const std::string& path, std::string* content) {  in ReadFileToString()  argument
52   int fd = TEMP_FAILURE_RETRY(open(path.c_str(), O_RDONLY | O_CLOEXEC | O_NOFOLLOW | O_BINARY));  in ReadFileToString()
75 static bool CleanUpAfterFailedWrite(const std::string& path) {  in CleanUpAfterFailedWrite()  argument
78   unlink(path.c_str());  in CleanUpAfterFailedWrite()
84 bool WriteStringToFile(const std::string& content, const std::string& path,  in WriteStringToFile()  argument
87   int fd = TEMP_FAILURE_RETRY(open(path.c_str(), flags, mode));  in WriteStringToFile()
97     return CleanUpAfterFailedWrite(path);  in WriteStringToFile()
101     return CleanUpAfterFailedWrite(path);  in WriteStringToFile()
105     return CleanUpAfterFailedWrite(path);  in WriteStringToFile()
112 bool WriteStringToFile(const std::string& content, const std::string& path) {  in WriteStringToFile()  argument
114   int fd = TEMP_FAILURE_RETRY(open(path.c_str(), flags, DEFFILEMODE));  in WriteStringToFile()
121   return result || CleanUpAfterFailedWrite(path);  in WriteStringToFile()
148 bool RemoveFileIfExists(const std::string& path, std::string* err) {  in RemoveFileIfExists()  argument
152   int result = stat(path.c_str(), &st);  in RemoveFileIfExists()
155   int result = lstat(path.c_str(), &st);  in RemoveFileIfExists()
165     if (unlink(path.c_str()) == -1) {  in RemoveFileIfExists()