103     int rval;  in WaitForFrame()  local
110     rval = TEMP_FAILURE_RETRY(select(mSockFd + 1, &readFds, nullptr, &errorFds, &timeout));  in WaitForFrame()
112     if (rval > 0) {  in WaitForFrame()
120     } else if (rval == 0) {  in WaitForFrame()
156     ssize_t rval = TEMP_FAILURE_RETRY(read(mSockFd, buffer, sizeof(buffer)));  in Read()  local
158     if (rval > 0) {  in Read()
159         ProcessReceivedData(buffer, static_cast<uint16_t>(rval));  in Read()
160     } else if (rval < 0) {  in Read()
169     ssize_t rval = TEMP_FAILURE_RETRY(write(mSockFd, aFrame, aLength));  in Write()  local
170     VerifyOrDie(rval >= 0, OT_EXIT_ERROR_ERRNO);  in Write()
171     VerifyOrDie(rval > 0, OT_EXIT_FAILURE);  in Write()
269         int rval = select(inotifyFd + 1, &fds, nullptr, nullptr, &timeout);  in WaitForSocketFileCreated()  local
270         VerifyOrDie(rval >= 0, OT_EXIT_ERROR_ERRNO);  in WaitForSocketFileCreated()
272         if (rval == 0 && IsSocketFileExisted(aPath)) {  in WaitForSocketFileCreated()