+ size_t bytes_written = 0;
+ unsigned char *ptr = (unsigned char *) buf;
+ struct timeout timeout;
+ fd_set fds;
+ int result;
+
+ timeout_start(&timeout, timeout_ms);
+
+ FD_ZERO(&fds);
+ FD_SET(port->fd, &fds);
+
+ /* Loop until we have written the requested number of bytes. */
+ while (bytes_written < count) {
+
+ if (timeout_check(&timeout))
+ break;
+
+ result = select(port->fd + 1, NULL, &fds, NULL, timeout_timeval(&timeout));
+
+ timeout_update(&timeout);
+
+ if (result < 0) {
+ if (errno == EINTR) {
+ DEBUG("select() call was interrupted, repeating");
+ continue;
+ } else {
+ RETURN_FAIL("select() failed");
+ }
+ } else if (result == 0) {
+ /* Timeout has expired. */
+ break;
+ }
+
+ /* Do write. */
+ result = write(port->fd, ptr, count - bytes_written);
+
+ if (result < 0) {
+ if (errno == EAGAIN)
+ /* This shouldn't happen because we did a select() first, but handle anyway. */
+ continue;
+ else
+ /* This is an actual failure. */
+ RETURN_FAIL("write() failed");
+ }
+
+ bytes_written += result;
+ ptr += result;
+ }
+
+ if (bytes_written < count)
+ DEBUG("Write timed out");
+
+ RETURN_INT(bytes_written);
+#endif
+}
+
+SP_API enum sp_return sp_nonblocking_write(struct sp_port *port,
+ const void *buf, size_t count)
+{
+ TRACE("%p, %p, %d", port, buf, count);
+
+ CHECK_OPEN_PORT();
+
+ if (!buf)
+ RETURN_ERROR(SP_ERR_ARG, "Null buffer");
+
+ DEBUG_FMT("Writing up to %d bytes to port %s", count, port->name);
+
+ if (count == 0)
+ RETURN_INT(0);
+
+#ifdef _WIN32
+ size_t buf_bytes;
+
+ /* Check whether previous write is complete. */
+ if (port->writing) {
+ if (HasOverlappedIoCompleted(&port->write_ovl)) {
+ DEBUG("Previous write completed");
+ port->writing = 0;
+ } else {
+ DEBUG("Previous write not complete");
+ /* Can't take a new write until the previous one finishes. */
+ RETURN_INT(0);
+ }
+ }
+
+ /* Set timeout. */
+ if (port->timeouts.WriteTotalTimeoutConstant != 0) {
+ port->timeouts.WriteTotalTimeoutConstant = 0;
+ if (SetCommTimeouts(port->hdl, &port->timeouts) == 0)
+ RETURN_FAIL("SetCommTimeouts() failed");
+ }
+
+ /* Reduce count if it exceeds the WriteFile limit. */
+ if (count > WRITEFILE_MAX_SIZE)
+ count = WRITEFILE_MAX_SIZE;
+
+ /* Copy data to our write buffer. */
+ buf_bytes = min(port->write_buf_size, count);
+ memcpy(port->write_buf, buf, buf_bytes);
+
+ /* Start asynchronous write. */
+ if (WriteFile(port->hdl, port->write_buf, (DWORD) buf_bytes, NULL, &port->write_ovl) == 0) {
+ if (GetLastError() == ERROR_IO_PENDING) {
+ if ((port->writing = !HasOverlappedIoCompleted(&port->write_ovl)))
+ DEBUG("Asynchronous write completed immediately");
+ else
+ DEBUG("Asynchronous write running");
+ } else {
+ /* Actual failure of some kind. */
+ RETURN_FAIL("WriteFile() failed");
+ }
+ }
+
+ DEBUG("All bytes written immediately");
+
+ RETURN_INT((int) buf_bytes);
+#else
+ /* Returns the number of bytes written, or -1 upon failure. */
+ ssize_t written = write(port->fd, buf, count);
+
+ if (written < 0) {
+ if (errno == EAGAIN)
+ // Buffer is full, no bytes written.
+ RETURN_INT(0);
+ else
+ RETURN_FAIL("write() failed");
+ } else {
+ RETURN_INT(written);
+ }
+#endif
+}
+
+#ifdef _WIN32
+/* Restart wait operation if buffer was emptied. */
+static enum sp_return restart_wait_if_needed(struct sp_port *port, unsigned int bytes_read)
+{
+ DWORD errors;
+ COMSTAT comstat;
+
+ if (bytes_read == 0)
+ RETURN_OK();
+
+ if (ClearCommError(port->hdl, &errors, &comstat) == 0)
+ RETURN_FAIL("ClearCommError() failed");
+
+ if (comstat.cbInQue == 0)
+ TRY(restart_wait(port));
+
+ RETURN_OK();
+}
+#endif
+
+SP_API enum sp_return sp_blocking_read(struct sp_port *port, void *buf,
+ size_t count, unsigned int timeout_ms)
+{
+ TRACE("%p, %p, %d, %d", port, buf, count, timeout_ms);
+
+ CHECK_OPEN_PORT();
+
+ if (!buf)
+ RETURN_ERROR(SP_ERR_ARG, "Null buffer");
+
+ if (timeout_ms)
+ DEBUG_FMT("Reading %d bytes from port %s, timeout %d ms",
+ count, port->name, timeout_ms);
+ else
+ DEBUG_FMT("Reading %d bytes from port %s, no timeout",
+ count, port->name);
+
+ if (count == 0)
+ RETURN_INT(0);
+
+#ifdef _WIN32
+ DWORD bytes_read;
+
+ /* Set timeout. */
+ if (port->timeouts.ReadIntervalTimeout != 0 ||
+ port->timeouts.ReadTotalTimeoutMultiplier != 0 ||
+ port->timeouts.ReadTotalTimeoutConstant != timeout_ms) {
+ port->timeouts.ReadIntervalTimeout = 0;
+ port->timeouts.ReadTotalTimeoutMultiplier = 0;
+ port->timeouts.ReadTotalTimeoutConstant = timeout_ms;
+ if (SetCommTimeouts(port->hdl, &port->timeouts) == 0)
+ RETURN_FAIL("SetCommTimeouts() failed");
+ }
+
+ /* Start read. */
+ if (ReadFile(port->hdl, buf, (DWORD) count, NULL, &port->read_ovl)) {
+ DEBUG("Read completed immediately");
+ bytes_read = (DWORD) count;
+ } else if (GetLastError() == ERROR_IO_PENDING) {
+ DEBUG("Waiting for read to complete");
+ if (GetOverlappedResult(port->hdl, &port->read_ovl, &bytes_read, TRUE) == 0)
+ RETURN_FAIL("GetOverlappedResult() failed");
+ DEBUG_FMT("Read completed, %d/%d bytes read", bytes_read, count);
+ } else {
+ RETURN_FAIL("ReadFile() failed");
+ }
+
+ TRY(restart_wait_if_needed(port, bytes_read));
+
+ RETURN_INT((int) bytes_read);
+
+#else
+ size_t bytes_read = 0;
+ unsigned char *ptr = (unsigned char *) buf;
+ struct timeout timeout;
+ fd_set fds;
+ int result;
+
+ timeout_start(&timeout, timeout_ms);
+
+ FD_ZERO(&fds);
+ FD_SET(port->fd, &fds);
+
+ /* Loop until we have the requested number of bytes. */
+ while (bytes_read < count) {
+
+ if (timeout_check(&timeout))
+ /* Timeout has expired. */
+ break;
+
+ result = select(port->fd + 1, &fds, NULL, NULL, timeout_timeval(&timeout));
+
+ timeout_update(&timeout);
+
+ if (result < 0) {
+ if (errno == EINTR) {
+ DEBUG("select() call was interrupted, repeating");
+ continue;
+ } else {
+ RETURN_FAIL("select() failed");
+ }
+ } else if (result == 0) {
+ /* Timeout has expired. */
+ break;
+ }
+
+ /* Do read. */
+ result = read(port->fd, ptr, count - bytes_read);
+
+ if (result < 0) {
+ if (errno == EAGAIN)
+ /*
+ * This shouldn't happen because we did a
+ * select() first, but handle anyway.
+ */
+ continue;
+ else
+ /* This is an actual failure. */
+ RETURN_FAIL("read() failed");
+ }
+
+ bytes_read += result;
+ ptr += result;
+ }
+
+ if (bytes_read < count)
+ DEBUG("Read timed out");
+
+ RETURN_INT(bytes_read);
+#endif
+}
+
+SP_API enum sp_return sp_blocking_read_next(struct sp_port *port, void *buf,
+ size_t count, unsigned int timeout_ms)
+{
+ TRACE("%p, %p, %d, %d", port, buf, count, timeout_ms);
+
+ CHECK_OPEN_PORT();
+
+ if (!buf)
+ RETURN_ERROR(SP_ERR_ARG, "Null buffer");
+
+ if (count == 0)
+ RETURN_ERROR(SP_ERR_ARG, "Zero count");
+
+ if (timeout_ms)
+ DEBUG_FMT("Reading next max %d bytes from port %s, timeout %d ms",
+ count, port->name, timeout_ms);
+ else
+ DEBUG_FMT("Reading next max %d bytes from port %s, no timeout",
+ count, port->name);
+
+#ifdef _WIN32
+ DWORD bytes_read = 0;
+
+ /* If timeout_ms == 0, set maximum timeout. */
+ DWORD timeout_val = (timeout_ms == 0 ? MAXDWORD - 1 : timeout_ms);
+
+ /* Set timeout. */
+ if (port->timeouts.ReadIntervalTimeout != MAXDWORD ||
+ port->timeouts.ReadTotalTimeoutMultiplier != MAXDWORD ||
+ port->timeouts.ReadTotalTimeoutConstant != timeout_val) {
+ port->timeouts.ReadIntervalTimeout = MAXDWORD;
+ port->timeouts.ReadTotalTimeoutMultiplier = MAXDWORD;
+ port->timeouts.ReadTotalTimeoutConstant = timeout_val;
+ if (SetCommTimeouts(port->hdl, &port->timeouts) == 0)
+ RETURN_FAIL("SetCommTimeouts() failed");
+ }
+
+ /* Loop until we have at least one byte, or timeout is reached. */
+ while (bytes_read == 0) {
+ /* Start read. */
+ if (ReadFile(port->hdl, buf, (DWORD) count, &bytes_read, &port->read_ovl)) {
+ DEBUG("Read completed immediately");
+ } else if (GetLastError() == ERROR_IO_PENDING) {
+ DEBUG("Waiting for read to complete");
+ if (GetOverlappedResult(port->hdl, &port->read_ovl, &bytes_read, TRUE) == 0)
+ RETURN_FAIL("GetOverlappedResult() failed");
+ if (bytes_read > 0) {
+ DEBUG("Read completed");
+ } else if (timeout_ms > 0) {
+ DEBUG("Read timed out");
+ break;
+ } else {
+ DEBUG("Restarting read");
+ }
+ } else {
+ RETURN_FAIL("ReadFile() failed");
+ }
+ }
+
+ TRY(restart_wait_if_needed(port, bytes_read));
+
+ RETURN_INT(bytes_read);
+
+#else
+ size_t bytes_read = 0;
+ struct timeout timeout;
+ fd_set fds;
+ int result;
+
+ timeout_start(&timeout, timeout_ms);
+
+ FD_ZERO(&fds);
+ FD_SET(port->fd, &fds);
+
+ /* Loop until we have at least one byte, or timeout is reached. */
+ while (bytes_read == 0) {
+
+ if (timeout_check(&timeout))
+ /* Timeout has expired. */
+ break;
+
+ result = select(port->fd + 1, &fds, NULL, NULL, timeout_timeval(&timeout));
+
+ timeout_update(&timeout);
+
+ if (result < 0) {
+ if (errno == EINTR) {
+ DEBUG("select() call was interrupted, repeating");
+ continue;
+ } else {
+ RETURN_FAIL("select() failed");
+ }
+ } else if (result == 0) {
+ /* Timeout has expired. */
+ break;
+ }
+
+ /* Do read. */
+ result = read(port->fd, buf, count);
+
+ if (result < 0) {
+ if (errno == EAGAIN)
+ /* This shouldn't happen because we did a select() first, but handle anyway. */
+ continue;
+ else
+ /* This is an actual failure. */
+ RETURN_FAIL("read() failed");
+ }
+
+ bytes_read = result;
+ }
+
+ if (bytes_read == 0)
+ DEBUG("Read timed out");
+
+ RETURN_INT(bytes_read);
+#endif
+}
+
+SP_API enum sp_return sp_nonblocking_read(struct sp_port *port, void *buf,
+ size_t count)
+{
+ TRACE("%p, %p, %d", port, buf, count);
+
+ CHECK_OPEN_PORT();
+
+ if (!buf)
+ RETURN_ERROR(SP_ERR_ARG, "Null buffer");
+
+ DEBUG_FMT("Reading up to %d bytes from port %s", count, port->name);
+
+#ifdef _WIN32
+ DWORD bytes_read;
+
+ /* Set timeout. */
+ if (port->timeouts.ReadIntervalTimeout != MAXDWORD ||
+ port->timeouts.ReadTotalTimeoutMultiplier != 0 ||
+ port->timeouts.ReadTotalTimeoutConstant != 0) {
+ port->timeouts.ReadIntervalTimeout = MAXDWORD;
+ port->timeouts.ReadTotalTimeoutMultiplier = 0;
+ port->timeouts.ReadTotalTimeoutConstant = 0;
+ if (SetCommTimeouts(port->hdl, &port->timeouts) == 0)
+ RETURN_FAIL("SetCommTimeouts() failed");
+ }
+
+ /* Do read. */
+ if (ReadFile(port->hdl, buf, (DWORD) count, NULL, &port->read_ovl) == 0)
+ if (GetLastError() != ERROR_IO_PENDING)
+ RETURN_FAIL("ReadFile() failed");
+
+ /* Get number of bytes read. */
+ if (GetOverlappedResult(port->hdl, &port->read_ovl, &bytes_read, FALSE) == 0)
+ RETURN_FAIL("GetOverlappedResult() failed");
+
+ TRY(restart_wait_if_needed(port, bytes_read));
+
+ RETURN_INT(bytes_read);
+#else
+ ssize_t bytes_read;
+
+ /* Returns the number of bytes read, or -1 upon failure. */
+ if ((bytes_read = read(port->fd, buf, count)) < 0) {
+ if (errno == EAGAIN)
+ /* No bytes available. */
+ bytes_read = 0;
+ else
+ /* This is an actual failure. */
+ RETURN_FAIL("read() failed");
+ }
+ RETURN_INT(bytes_read);
+#endif
+}
+
+SP_API enum sp_return sp_input_waiting(struct sp_port *port)
+{
+ TRACE("%p", port);
+
+ CHECK_OPEN_PORT();
+
+ DEBUG_FMT("Checking input bytes waiting on port %s", port->name);
+
+#ifdef _WIN32
+ DWORD errors;
+ COMSTAT comstat;
+
+ if (ClearCommError(port->hdl, &errors, &comstat) == 0)
+ RETURN_FAIL("ClearCommError() failed");
+ RETURN_INT(comstat.cbInQue);
+#else
+ int bytes_waiting;
+ if (ioctl(port->fd, TIOCINQ, &bytes_waiting) < 0)
+ RETURN_FAIL("TIOCINQ ioctl failed");
+ RETURN_INT(bytes_waiting);
+#endif
+}
+
+SP_API enum sp_return sp_output_waiting(struct sp_port *port)
+{
+ TRACE("%p", port);
+
+#ifdef __CYGWIN__
+ /* TIOCOUTQ is not defined in Cygwin headers */
+ RETURN_ERROR(SP_ERR_SUPP,
+ "Getting output bytes waiting is not supported on Cygwin");
+#else
+ CHECK_OPEN_PORT();
+
+ DEBUG_FMT("Checking output bytes waiting on port %s", port->name);
+
+#ifdef _WIN32
+ DWORD errors;
+ COMSTAT comstat;
+
+ if (ClearCommError(port->hdl, &errors, &comstat) == 0)
+ RETURN_FAIL("ClearCommError() failed");
+ RETURN_INT(comstat.cbOutQue);
+#else
+ int bytes_waiting;
+ if (ioctl(port->fd, TIOCOUTQ, &bytes_waiting) < 0)
+ RETURN_FAIL("TIOCOUTQ ioctl failed");
+ RETURN_INT(bytes_waiting);
+#endif
+#endif
+}
+
+SP_API enum sp_return sp_new_event_set(struct sp_event_set **result_ptr)
+{
+ struct sp_event_set *result;
+
+ TRACE("%p", result_ptr);
+
+ if (!result_ptr)
+ RETURN_ERROR(SP_ERR_ARG, "Null result");
+
+ *result_ptr = NULL;
+
+ if (!(result = malloc(sizeof(struct sp_event_set))))
+ RETURN_ERROR(SP_ERR_MEM, "sp_event_set malloc() failed");
+
+ memset(result, 0, sizeof(struct sp_event_set));
+
+ *result_ptr = result;
+
+ RETURN_OK();
+}
+
+static enum sp_return add_handle(struct sp_event_set *event_set,
+ event_handle handle, enum sp_event mask)
+{
+ void *new_handles;
+ enum sp_event *new_masks;
+
+ TRACE("%p, %d, %d", event_set, handle, mask);
+
+ if (!(new_handles = realloc(event_set->handles,
+ sizeof(event_handle) * (event_set->count + 1))))
+ RETURN_ERROR(SP_ERR_MEM, "Handle array realloc() failed");
+
+ event_set->handles = new_handles;
+
+ if (!(new_masks = realloc(event_set->masks,
+ sizeof(enum sp_event) * (event_set->count + 1))))
+ RETURN_ERROR(SP_ERR_MEM, "Mask array realloc() failed");
+
+ event_set->masks = new_masks;
+
+ ((event_handle *) event_set->handles)[event_set->count] = handle;
+ event_set->masks[event_set->count] = mask;
+
+ event_set->count++;
+
+ RETURN_OK();
+}
+
+SP_API enum sp_return sp_add_port_events(struct sp_event_set *event_set,
+ const struct sp_port *port, enum sp_event mask)
+{
+ TRACE("%p, %p, %d", event_set, port, mask);
+
+ if (!event_set)
+ RETURN_ERROR(SP_ERR_ARG, "Null event set");
+
+ if (!port)
+ RETURN_ERROR(SP_ERR_ARG, "Null port");
+
+ if (mask > (SP_EVENT_RX_READY | SP_EVENT_TX_READY | SP_EVENT_ERROR))
+ RETURN_ERROR(SP_ERR_ARG, "Invalid event mask");
+
+ if (!mask)
+ RETURN_OK();
+
+#ifdef _WIN32
+ enum sp_event handle_mask;
+ if ((handle_mask = mask & SP_EVENT_TX_READY))
+ TRY(add_handle(event_set, port->write_ovl.hEvent, handle_mask));
+ if ((handle_mask = mask & (SP_EVENT_RX_READY | SP_EVENT_ERROR)))
+ TRY(add_handle(event_set, port->wait_ovl.hEvent, handle_mask));
+#else
+ TRY(add_handle(event_set, port->fd, mask));
+#endif
+
+ RETURN_OK();
+}
+
+SP_API void sp_free_event_set(struct sp_event_set *event_set)
+{
+ TRACE("%p", event_set);
+
+ if (!event_set) {
+ DEBUG("Null event set");
+ RETURN();
+ }
+
+ DEBUG("Freeing event set");
+
+ if (event_set->handles)
+ free(event_set->handles);
+ if (event_set->masks)
+ free(event_set->masks);
+
+ free(event_set);
+
+ RETURN();
+}
+
+SP_API enum sp_return sp_wait(struct sp_event_set *event_set,
+ unsigned int timeout_ms)
+{
+ TRACE("%p, %d", event_set, timeout_ms);
+
+ if (!event_set)
+ RETURN_ERROR(SP_ERR_ARG, "Null event set");
+
+#ifdef _WIN32
+ if (WaitForMultipleObjects(event_set->count, event_set->handles, FALSE,
+ timeout_ms ? timeout_ms : INFINITE) == WAIT_FAILED)
+ RETURN_FAIL("WaitForMultipleObjects() failed");
+
+ RETURN_OK();
+#else
+ struct timeout timeout;
+ int poll_timeout;
+ int result;
+ struct pollfd *pollfds;
+ unsigned int i;
+
+ if (!(pollfds = malloc(sizeof(struct pollfd) * event_set->count)))
+ RETURN_ERROR(SP_ERR_MEM, "pollfds malloc() failed");
+
+ for (i = 0; i < event_set->count; i++) {
+ pollfds[i].fd = ((int *)event_set->handles)[i];
+ pollfds[i].events = 0;
+ pollfds[i].revents = 0;
+ if (event_set->masks[i] & SP_EVENT_RX_READY)
+ pollfds[i].events |= POLLIN;
+ if (event_set->masks[i] & SP_EVENT_TX_READY)
+ pollfds[i].events |= POLLOUT;
+ if (event_set->masks[i] & SP_EVENT_ERROR)
+ pollfds[i].events |= POLLERR;
+ }
+
+ timeout_start(&timeout, timeout_ms);
+ timeout_limit(&timeout, INT_MAX);
+
+ /* Loop until an event occurs. */
+ while (1) {
+
+ if (timeout_check(&timeout)) {
+ DEBUG("Wait timed out");
+ break;
+ }
+
+ poll_timeout = (int) timeout_remaining_ms(&timeout);
+ if (poll_timeout == 0)
+ poll_timeout = -1;
+
+ result = poll(pollfds, event_set->count, poll_timeout);
+
+ timeout_update(&timeout);
+
+ if (result < 0) {
+ if (errno == EINTR) {
+ DEBUG("poll() call was interrupted, repeating");
+ continue;
+ } else {
+ free(pollfds);
+ RETURN_FAIL("poll() failed");
+ }
+ } else if (result == 0) {
+ DEBUG("poll() timed out");
+ if (!timeout.overflow)
+ break;
+ } else {
+ DEBUG("poll() completed");
+ break;
+ }
+ }
+
+ free(pollfds);
+ RETURN_OK();
+#endif
+}
+
+#ifdef USE_TERMIOS_SPEED
+static enum sp_return get_baudrate(int fd, int *baudrate)
+{
+ void *data;
+
+ TRACE("%d, %p", fd, baudrate);
+
+ DEBUG("Getting baud rate");
+
+ if (!(data = malloc(get_termios_size())))
+ RETURN_ERROR(SP_ERR_MEM, "termios malloc failed");
+
+ if (ioctl(fd, get_termios_get_ioctl(), data) < 0) {
+ free(data);
+ RETURN_FAIL("Getting termios failed");
+ }
+
+ *baudrate = get_termios_speed(data);
+
+ free(data);
+
+ RETURN_OK();
+}
+
+static enum sp_return set_baudrate(int fd, int baudrate)
+{
+ void *data;
+
+ TRACE("%d, %d", fd, baudrate);
+
+ DEBUG("Getting baud rate");
+
+ if (!(data = malloc(get_termios_size())))
+ RETURN_ERROR(SP_ERR_MEM, "termios malloc failed");
+
+ if (ioctl(fd, get_termios_get_ioctl(), data) < 0) {
+ free(data);
+ RETURN_FAIL("Getting termios failed");
+ }
+
+ DEBUG("Setting baud rate");
+
+ set_termios_speed(data, baudrate);
+
+ if (ioctl(fd, get_termios_set_ioctl(), data) < 0) {
+ free(data);
+ RETURN_FAIL("Setting termios failed");
+ }
+
+ free(data);
+
+ RETURN_OK();
+}
+#endif /* USE_TERMIOS_SPEED */
+
+#ifdef USE_TERMIOX
+static enum sp_return get_flow(int fd, struct port_data *data)
+{
+ void *termx;
+
+ TRACE("%d, %p", fd, data);
+
+ DEBUG("Getting advanced flow control");
+
+ if (!(termx = malloc(get_termiox_size())))
+ RETURN_ERROR(SP_ERR_MEM, "termiox malloc failed");
+
+ if (ioctl(fd, TCGETX, termx) < 0) {
+ free(termx);
+ RETURN_FAIL("Getting termiox failed");
+ }
+
+ get_termiox_flow(termx, &data->rts_flow, &data->cts_flow,
+ &data->dtr_flow, &data->dsr_flow);
+
+ free(termx);
+
+ RETURN_OK();
+}
+
+static enum sp_return set_flow(int fd, struct port_data *data)
+{
+ void *termx;
+
+ TRACE("%d, %p", fd, data);
+
+ DEBUG("Getting advanced flow control");
+
+ if (!(termx = malloc(get_termiox_size())))
+ RETURN_ERROR(SP_ERR_MEM, "termiox malloc failed");
+
+ if (ioctl(fd, TCGETX, termx) < 0) {
+ free(termx);
+ RETURN_FAIL("Getting termiox failed");
+ }
+
+ DEBUG("Setting advanced flow control");
+
+ set_termiox_flow(termx, data->rts_flow, data->cts_flow,
+ data->dtr_flow, data->dsr_flow);
+
+ if (ioctl(fd, TCSETX, termx) < 0) {
+ free(termx);
+ RETURN_FAIL("Setting termiox failed");
+ }
+
+ free(termx);
+
+ RETURN_OK();
+}
+#endif /* USE_TERMIOX */
+
+static enum sp_return get_config(struct sp_port *port, struct port_data *data,
+ struct sp_port_config *config)
+{
+ unsigned int i;
+
+ TRACE("%p, %p, %p", port, data, config);
+
+ DEBUG_FMT("Getting configuration for port %s", port->name);
+
+#ifdef _WIN32
+ if (!GetCommState(port->hdl, &data->dcb))
+ RETURN_FAIL("GetCommState() failed");
+
+ for (i = 0; i < NUM_STD_BAUDRATES; i++) {
+ if (data->dcb.BaudRate == std_baudrates[i].index) {
+ config->baudrate = std_baudrates[i].value;
+ break;
+ }
+ }
+
+ if (i == NUM_STD_BAUDRATES)
+ /* BaudRate field can be either an index or a custom baud rate. */
+ config->baudrate = data->dcb.BaudRate;