49 int32_t readFile(const std::string &filename, std::string *contents) {  in readFile()  argument
55   fp = fopen(filename.c_str(), "r");  in readFile()
117   std::string filename =  in switchToDrp()  local
121   if (filename != "") {  in switchToDrp()
122     fp = fopen(filename.c_str(), "w");  in switchToDrp()
138   std::string filename =  in switchMode()  local
144   if (filename == "") {  in switchMode()
149   fp = fopen(filename.c_str(), "w");  in switchMode()
218   std::string filename =  in switchRole()  local
224   if (filename == "") {  in switchRole()
231   ALOGI("filename write: %s role:%s", filename.c_str(),  in switchRole()
237     fp = fopen(filename.c_str(), "w");  in switchRole()
241       if ((ret != EOF) && !readFile(filename, &written)) {  in switchRole()
274   std::string filename =  in getAccessoryConnected()  local
277   if (readFile(filename, accessory)) {  in getAccessoryConnected()
279           filename.c_str());  in getAccessoryConnected()
288   std::string filename;  in getCurrentRoleHelper()  local
295     filename = "/sys/class/typec/" + portName + "/power_role";  in getCurrentRoleHelper()
298     filename = "/sys/class/typec/" + portName + "/data_role";  in getCurrentRoleHelper()
301     filename = "/sys/class/typec/" + portName + "/data_role";  in getCurrentRoleHelper()
322   if (readFile(filename, &roleName)) {  in getCurrentRoleHelper()
324           filename.c_str());  in getCurrentRoleHelper()
383   std::string filename =  in canSwitchRoleHelper()  local
387   if (!readFile(filename, &supportsPD)) {  in canSwitchRoleHelper()