+#include "libserialport.h"
+#include "libserialport_internal.h"
+
+static const struct std_baudrate std_baudrates[] = {
+#ifdef _WIN32
+ /*
+ * The baudrates 50/75/134/150/200/1800/230400/460800 do not seem to
+ * have documented CBR_* macros.
+ */
+ BAUD(110), BAUD(300), BAUD(600), BAUD(1200), BAUD(2400), BAUD(4800),
+ BAUD(9600), BAUD(14400), BAUD(19200), BAUD(38400), BAUD(57600),
+ BAUD(115200), BAUD(128000), BAUD(256000),
+#else
+ BAUD(50), BAUD(75), BAUD(110), BAUD(134), BAUD(150), BAUD(200),
+ BAUD(300), BAUD(600), BAUD(1200), BAUD(1800), BAUD(2400), BAUD(4800),
+ BAUD(9600), BAUD(19200), BAUD(38400), BAUD(57600), BAUD(115200),
+ BAUD(230400),
+#if !defined(__APPLE__) && !defined(__OpenBSD__)
+ BAUD(460800),
+#endif
+#endif
+};
+
+#define NUM_STD_BAUDRATES ARRAY_SIZE(std_baudrates)
+
+void (*sp_debug_handler)(const char *format, ...) = sp_default_debug_handler;
+
+static enum sp_return get_config(struct sp_port *port, struct port_data *data,
+ struct sp_port_config *config);
+
+static enum sp_return set_config(struct sp_port *port, struct port_data *data,
+ const struct sp_port_config *config);
+
+SP_API enum sp_return sp_get_port_by_name(const char *portname, struct sp_port **port_ptr)
+{
+ struct sp_port *port;
+#ifndef NO_PORT_METADATA
+ enum sp_return ret;
+#endif
+ int len;
+
+ TRACE("%s, %p", portname, port_ptr);
+
+ if (!port_ptr)
+ RETURN_ERROR(SP_ERR_ARG, "Null result pointer");
+
+ *port_ptr = NULL;
+
+ if (!portname)
+ RETURN_ERROR(SP_ERR_ARG, "Null port name");
+
+ DEBUG_FMT("Building structure for port %s", portname);
+
+ if (!(port = malloc(sizeof(struct sp_port))))
+ RETURN_ERROR(SP_ERR_MEM, "Port structure malloc failed");
+
+ len = strlen(portname) + 1;
+
+ if (!(port->name = malloc(len))) {
+ free(port);
+ RETURN_ERROR(SP_ERR_MEM, "Port name malloc failed");
+ }
+
+ memcpy(port->name, portname, len);
+
+#ifdef _WIN32
+ port->usb_path = NULL;
+ port->hdl = INVALID_HANDLE_VALUE;
+#else
+ port->fd = -1;
+#endif
+
+ port->description = NULL;
+ port->transport = SP_TRANSPORT_NATIVE;
+ port->usb_bus = -1;
+ port->usb_address = -1;
+ port->usb_vid = -1;
+ port->usb_pid = -1;
+ port->usb_manufacturer = NULL;
+ port->usb_product = NULL;
+ port->usb_serial = NULL;
+ port->bluetooth_address = NULL;
+
+#ifndef NO_PORT_METADATA
+ if ((ret = get_port_details(port)) != SP_OK) {
+ sp_free_port(port);
+ return ret;
+ }
+#endif
+
+ *port_ptr = port;
+
+ RETURN_OK();
+}
+
+SP_API char *sp_get_port_name(const struct sp_port *port)
+{
+ TRACE("%p", port);
+
+ if (!port)
+ return NULL;
+
+ RETURN_STRING(port->name);
+}
+
+SP_API char *sp_get_port_description(const struct sp_port *port)
+{
+ TRACE("%p", port);
+
+ if (!port || !port->description)
+ return NULL;
+
+ RETURN_STRING(port->description);
+}
+
+SP_API enum sp_transport sp_get_port_transport(const struct sp_port *port)
+{
+ TRACE("%p", port);
+
+ if (!port)
+ RETURN_ERROR(SP_ERR_ARG, "Null port");
+
+ RETURN_INT(port->transport);
+}
+
+SP_API enum sp_return sp_get_port_usb_bus_address(const struct sp_port *port,
+ int *usb_bus,int *usb_address)
+{
+ TRACE("%p", port);
+
+ if (!port)
+ RETURN_ERROR(SP_ERR_ARG, "Null port");
+ if (port->transport != SP_TRANSPORT_USB)
+ RETURN_ERROR(SP_ERR_ARG, "Port does not use USB transport");
+ if (port->usb_bus < 0 || port->usb_address < 0)
+ RETURN_ERROR(SP_ERR_SUPP, "Bus and address values are not available");
+
+ if (usb_bus)
+ *usb_bus = port->usb_bus;
+ if (usb_address)
+ *usb_address = port->usb_address;
+
+ RETURN_OK();
+}
+
+SP_API enum sp_return sp_get_port_usb_vid_pid(const struct sp_port *port,
+ int *usb_vid, int *usb_pid)
+{
+ TRACE("%p", port);
+
+ if (!port)
+ RETURN_ERROR(SP_ERR_ARG, "Null port");
+ if (port->transport != SP_TRANSPORT_USB)
+ RETURN_ERROR(SP_ERR_ARG, "Port does not use USB transport");
+ if (port->usb_vid < 0 || port->usb_pid < 0)
+ RETURN_ERROR(SP_ERR_SUPP, "VID:PID values are not available");
+
+ if (usb_vid)
+ *usb_vid = port->usb_vid;
+ if (usb_pid)
+ *usb_pid = port->usb_pid;
+
+ RETURN_OK();
+}
+
+SP_API char *sp_get_port_usb_manufacturer(const struct sp_port *port)
+{
+ TRACE("%p", port);
+
+ if (!port || port->transport != SP_TRANSPORT_USB || !port->usb_manufacturer)
+ return NULL;
+
+ RETURN_STRING(port->usb_manufacturer);
+}
+
+SP_API char *sp_get_port_usb_product(const struct sp_port *port)
+{
+ TRACE("%p", port);
+
+ if (!port || port->transport != SP_TRANSPORT_USB || !port->usb_product)
+ return NULL;
+
+ RETURN_STRING(port->usb_product);
+}
+
+SP_API char *sp_get_port_usb_serial(const struct sp_port *port)
+{
+ TRACE("%p", port);
+
+ if (!port || port->transport != SP_TRANSPORT_USB || !port->usb_serial)
+ return NULL;
+
+ RETURN_STRING(port->usb_serial);
+}
+
+SP_API char *sp_get_port_bluetooth_address(const struct sp_port *port)
+{
+ TRACE("%p", port);
+
+ if (!port || port->transport != SP_TRANSPORT_BLUETOOTH
+ || !port->bluetooth_address)
+ return NULL;
+
+ RETURN_STRING(port->bluetooth_address);
+}
+
+SP_API enum sp_return sp_get_port_handle(const struct sp_port *port,
+ void *result_ptr)
+{
+ TRACE("%p, %p", port, result_ptr);
+
+ if (!port)
+ RETURN_ERROR(SP_ERR_ARG, "Null port");
+ if (!result_ptr)
+ RETURN_ERROR(SP_ERR_ARG, "Null result pointer");
+
+#ifdef _WIN32
+ HANDLE *handle_ptr = result_ptr;
+ *handle_ptr = port->hdl;
+#else
+ int *fd_ptr = result_ptr;
+ *fd_ptr = port->fd;
+#endif
+
+ RETURN_OK();
+}
+
+SP_API enum sp_return sp_copy_port(const struct sp_port *port,
+ struct sp_port **copy_ptr)
+{
+ TRACE("%p, %p", port, copy_ptr);
+
+ if (!copy_ptr)
+ RETURN_ERROR(SP_ERR_ARG, "Null result pointer");
+
+ *copy_ptr = NULL;
+
+ if (!port)
+ RETURN_ERROR(SP_ERR_ARG, "Null port");
+
+ if (!port->name)
+ RETURN_ERROR(SP_ERR_ARG, "Null port name");
+
+ DEBUG("Copying port structure");
+
+ RETURN_INT(sp_get_port_by_name(port->name, copy_ptr));
+}
+
+SP_API void sp_free_port(struct sp_port *port)
+{
+ TRACE("%p", port);
+
+ if (!port) {
+ DEBUG("Null port");
+ RETURN();
+ }
+
+ DEBUG("Freeing port structure");
+
+ if (port->name)
+ free(port->name);
+ if (port->description)
+ free(port->description);
+ if (port->usb_manufacturer)
+ free(port->usb_manufacturer);
+ if (port->usb_product)
+ free(port->usb_product);
+ if (port->usb_serial)
+ free(port->usb_serial);
+ if (port->bluetooth_address)
+ free(port->bluetooth_address);
+#ifdef _WIN32
+ if (port->usb_path)
+ free(port->usb_path);
+#endif
+
+ free(port);
+
+ RETURN();
+}
+
+SP_PRIV struct sp_port **list_append(struct sp_port **list,
+ const char *portname)
+{
+ void *tmp;
+ unsigned int count;
+
+ for (count = 0; list[count]; count++);
+ if (!(tmp = realloc(list, sizeof(struct sp_port *) * (count + 2))))
+ goto fail;
+ list = tmp;
+ if (sp_get_port_by_name(portname, &list[count]) != SP_OK)
+ goto fail;
+ list[count + 1] = NULL;
+ return list;
+
+fail:
+ sp_free_port_list(list);
+ return NULL;
+}
+
+SP_API enum sp_return sp_list_ports(struct sp_port ***list_ptr)
+{
+#ifndef NO_ENUMERATION
+ struct sp_port **list;
+ int ret;
+#endif
+
+ TRACE("%p", list_ptr);
+
+ if (!list_ptr)
+ RETURN_ERROR(SP_ERR_ARG, "Null result pointer");
+
+ *list_ptr = NULL;
+
+#ifdef NO_ENUMERATION
+ RETURN_ERROR(SP_ERR_SUPP, "Enumeration not supported on this platform");
+#else
+ DEBUG("Enumerating ports");
+
+ if (!(list = malloc(sizeof(struct sp_port *))))
+ RETURN_ERROR(SP_ERR_MEM, "Port list malloc failed");
+
+ list[0] = NULL;
+
+ ret = list_ports(&list);
+
+ if (ret == SP_OK) {
+ *list_ptr = list;
+ } else {
+ sp_free_port_list(list);
+ *list_ptr = NULL;
+ }
+
+ RETURN_CODEVAL(ret);
+#endif
+}
+
+SP_API void sp_free_port_list(struct sp_port **list)
+{
+ unsigned int i;
+
+ TRACE("%p", list);
+
+ if (!list) {
+ DEBUG("Null list");
+ RETURN();
+ }
+
+ DEBUG("Freeing port list");
+
+ for (i = 0; list[i]; i++)
+ sp_free_port(list[i]);
+ free(list);
+
+ RETURN();
+}
+
+#define CHECK_PORT() do { \
+ if (!port) \
+ RETURN_ERROR(SP_ERR_ARG, "Null port"); \
+ if (!port->name) \
+ RETURN_ERROR(SP_ERR_ARG, "Null port name"); \
+} while (0)
+#ifdef _WIN32
+#define CHECK_PORT_HANDLE() do { \
+ if (port->hdl == INVALID_HANDLE_VALUE) \
+ RETURN_ERROR(SP_ERR_ARG, "Invalid port handle"); \
+} while (0)
+#else
+#define CHECK_PORT_HANDLE() do { \
+ if (port->fd < 0) \
+ RETURN_ERROR(SP_ERR_ARG, "Invalid port fd"); \
+} while (0)
+#endif
+#define CHECK_OPEN_PORT() do { \
+ CHECK_PORT(); \
+ CHECK_PORT_HANDLE(); \
+} while (0)
+
+#ifdef WIN32
+/** To be called after port receive buffer is emptied. */
+static enum sp_return restart_wait(struct sp_port *port)
+{
+ DWORD wait_result;
+
+ if (port->wait_running) {
+ /* Check status of running wait operation. */
+ if (GetOverlappedResult(port->hdl, &port->wait_ovl,
+ &wait_result, FALSE)) {
+ DEBUG("Previous wait completed");
+ port->wait_running = FALSE;
+ } else if (GetLastError() == ERROR_IO_INCOMPLETE) {
+ DEBUG("Previous wait still running");
+ RETURN_OK();
+ } else {
+ RETURN_FAIL("GetOverlappedResult() failed");
+ }
+ }
+
+ if (!port->wait_running) {
+ /* Start new wait operation. */
+ if (WaitCommEvent(port->hdl, &port->events,
+ &port->wait_ovl)) {
+ DEBUG("New wait returned, events already pending");
+ } else if (GetLastError() == ERROR_IO_PENDING) {
+ DEBUG("New wait running in background");
+ port->wait_running = TRUE;
+ } else {
+ RETURN_FAIL("WaitCommEvent() failed");
+ }
+ }
+
+ RETURN_OK();
+}
+#endif
+
+SP_API enum sp_return sp_open(struct sp_port *port, enum sp_mode flags)
+{
+ struct port_data data;
+ struct sp_port_config config;
+ enum sp_return ret;
+
+ TRACE("%p, 0x%x", port, flags);
+
+ CHECK_PORT();
+
+ if (flags > SP_MODE_READ_WRITE)
+ RETURN_ERROR(SP_ERR_ARG, "Invalid flags");
+
+ DEBUG_FMT("Opening port %s", port->name);
+
+#ifdef _WIN32
+ DWORD desired_access = 0, flags_and_attributes = 0, errors;
+ char *escaped_port_name;
+ COMSTAT status;
+
+ /* Prefix port name with '\\.\' to work with ports above COM9. */
+ if (!(escaped_port_name = malloc(strlen(port->name) + 5)))
+ RETURN_ERROR(SP_ERR_MEM, "Escaped port name malloc failed");
+ sprintf(escaped_port_name, "\\\\.\\%s", port->name);
+
+ /* Map 'flags' to the OS-specific settings. */
+ flags_and_attributes = FILE_ATTRIBUTE_NORMAL | FILE_FLAG_OVERLAPPED;
+ if (flags & SP_MODE_READ)
+ desired_access |= GENERIC_READ;
+ if (flags & SP_MODE_WRITE)
+ desired_access |= GENERIC_WRITE;
+
+ port->hdl = CreateFile(escaped_port_name, desired_access, 0, 0,
+ OPEN_EXISTING, flags_and_attributes, 0);
+
+ free(escaped_port_name);
+
+ if (port->hdl == INVALID_HANDLE_VALUE)
+ RETURN_FAIL("Port CreateFile() failed");
+
+ /* All timeouts initially disabled. */
+ port->timeouts.ReadIntervalTimeout = 0;
+ port->timeouts.ReadTotalTimeoutMultiplier = 0;
+ port->timeouts.ReadTotalTimeoutConstant = 0;
+ port->timeouts.WriteTotalTimeoutMultiplier = 0;
+ port->timeouts.WriteTotalTimeoutConstant = 0;
+
+ if (SetCommTimeouts(port->hdl, &port->timeouts) == 0) {
+ sp_close(port);
+ RETURN_FAIL("SetCommTimeouts() failed");
+ }
+
+ /* Prepare OVERLAPPED structures. */
+#define INIT_OVERLAPPED(ovl) do { \
+ memset(&port->ovl, 0, sizeof(port->ovl)); \
+ port->ovl.hEvent = INVALID_HANDLE_VALUE; \
+ if ((port->ovl.hEvent = CreateEvent(NULL, TRUE, TRUE, NULL)) \
+ == INVALID_HANDLE_VALUE) { \
+ sp_close(port); \
+ RETURN_FAIL(#ovl "CreateEvent() failed"); \
+ } \
+} while (0)
+
+ INIT_OVERLAPPED(read_ovl);
+ INIT_OVERLAPPED(write_ovl);
+ INIT_OVERLAPPED(wait_ovl);
+
+ /* Set event mask for RX and error events. */
+ if (SetCommMask(port->hdl, EV_RXCHAR | EV_ERR) == 0) {
+ sp_close(port);
+ RETURN_FAIL("SetCommMask() failed");
+ }
+
+ port->writing = FALSE;
+ port->wait_running = FALSE;
+
+ ret = restart_wait(port);
+
+ if (ret < 0) {
+ sp_close(port);
+ RETURN_CODEVAL(ret);
+ }
+#else
+ int flags_local = O_NONBLOCK | O_NOCTTY;
+
+ /* Map 'flags' to the OS-specific settings. */
+ if ((flags & SP_MODE_READ_WRITE) == SP_MODE_READ_WRITE)
+ flags_local |= O_RDWR;
+ else if (flags & SP_MODE_READ)
+ flags_local |= O_RDONLY;
+ else if (flags & SP_MODE_WRITE)
+ flags_local |= O_WRONLY;
+
+ if ((port->fd = open(port->name, flags_local)) < 0)
+ RETURN_FAIL("open() failed");
+#endif
+
+ ret = get_config(port, &data, &config);
+
+ if (ret < 0) {
+ sp_close(port);
+ RETURN_CODEVAL(ret);
+ }
+
+ /* Set sane port settings. */
+#ifdef _WIN32
+ data.dcb.fBinary = TRUE;
+ data.dcb.fDsrSensitivity = FALSE;
+ data.dcb.fErrorChar = FALSE;
+ data.dcb.fNull = FALSE;
+ data.dcb.fAbortOnError = FALSE;
+#else
+ /* Turn off all fancy termios tricks, give us a raw channel. */
+ data.term.c_iflag &= ~(IGNBRK | BRKINT | PARMRK | ISTRIP | INLCR | IGNCR | ICRNL | IMAXBEL);
+#ifdef IUCLC
+ data.term.c_iflag &= ~IUCLC;
+#endif
+ data.term.c_oflag &= ~(OPOST | ONLCR | OCRNL | ONOCR | ONLRET);
+#ifdef OLCUC
+ data.term.c_oflag &= ~OLCUC;
+#endif
+#ifdef NLDLY
+ data.term.c_oflag &= ~NLDLY;
+#endif
+#ifdef CRDLY
+ data.term.c_oflag &= ~CRDLY;
+#endif
+#ifdef TABDLY
+ data.term.c_oflag &= ~TABDLY;
+#endif
+#ifdef BSDLY
+ data.term.c_oflag &= ~BSDLY;
+#endif
+#ifdef VTDLY
+ data.term.c_oflag &= ~VTDLY;
+#endif
+#ifdef FFDLY
+ data.term.c_oflag &= ~FFDLY;
+#endif
+#ifdef OFILL
+ data.term.c_oflag &= ~OFILL;
+#endif
+ data.term.c_lflag &= ~(ISIG | ICANON | ECHO | IEXTEN);
+ data.term.c_cc[VMIN] = 0;
+ data.term.c_cc[VTIME] = 0;
+
+ /* Ignore modem status lines; enable receiver; leave control lines alone on close. */
+ data.term.c_cflag |= (CLOCAL | CREAD | HUPCL);
+#endif
+
+#ifdef _WIN32
+ if (ClearCommError(port->hdl, &errors, &status) == 0)
+ RETURN_FAIL("ClearCommError() failed");
+#endif
+
+ ret = set_config(port, &data, &config);
+
+ if (ret < 0) {
+ sp_close(port);
+ RETURN_CODEVAL(ret);
+ }
+
+ RETURN_OK();
+}
+
+SP_API enum sp_return sp_close(struct sp_port *port)
+{
+ TRACE("%p", port);
+
+ CHECK_OPEN_PORT();
+
+ DEBUG_FMT("Closing port %s", port->name);
+
+#ifdef _WIN32
+ /* Returns non-zero upon success, 0 upon failure. */
+ if (CloseHandle(port->hdl) == 0)
+ RETURN_FAIL("Port CloseHandle() failed");
+ port->hdl = INVALID_HANDLE_VALUE;
+
+ /* Close event handles for overlapped structures. */
+#define CLOSE_OVERLAPPED(ovl) do { \
+ if (port->ovl.hEvent != INVALID_HANDLE_VALUE && \
+ CloseHandle(port->ovl.hEvent) == 0) \
+ RETURN_FAIL(# ovl "event CloseHandle() failed"); \
+} while (0)
+ CLOSE_OVERLAPPED(read_ovl);
+ CLOSE_OVERLAPPED(write_ovl);
+ CLOSE_OVERLAPPED(wait_ovl);
+
+#else
+ /* Returns 0 upon success, -1 upon failure. */
+ if (close(port->fd) == -1)
+ RETURN_FAIL("close() failed");
+ port->fd = -1;
+#endif
+
+ RETURN_OK();
+}
+
+SP_API enum sp_return sp_flush(struct sp_port *port, enum sp_buffer buffers)
+{
+ TRACE("%p, 0x%x", port, buffers);
+
+ CHECK_OPEN_PORT();
+
+ if (buffers > SP_BUF_BOTH)
+ RETURN_ERROR(SP_ERR_ARG, "Invalid buffer selection");
+
+ const char *buffer_names[] = {"no", "input", "output", "both"};
+
+ DEBUG_FMT("Flushing %s buffers on port %s",
+ buffer_names[buffers], port->name);
+
+#ifdef _WIN32
+ DWORD flags = 0;
+ if (buffers & SP_BUF_INPUT)
+ flags |= PURGE_RXCLEAR;
+ if (buffers & SP_BUF_OUTPUT)
+ flags |= PURGE_TXCLEAR;
+
+ /* Returns non-zero upon success, 0 upon failure. */
+ if (PurgeComm(port->hdl, flags) == 0)
+ RETURN_FAIL("PurgeComm() failed");
+
+ if (buffers & SP_BUF_INPUT)
+ TRY(restart_wait(port));
+#else
+ int flags = 0;
+ if (buffers == SP_BUF_BOTH)
+ flags = TCIOFLUSH;
+ else if (buffers == SP_BUF_INPUT)
+ flags = TCIFLUSH;
+ else if (buffers == SP_BUF_OUTPUT)
+ flags = TCOFLUSH;
+
+ /* Returns 0 upon success, -1 upon failure. */
+ if (tcflush(port->fd, flags) < 0)
+ RETURN_FAIL("tcflush() failed");
+#endif
+ RETURN_OK();
+}
+
+SP_API enum sp_return sp_drain(struct sp_port *port)
+{
+ TRACE("%p", port);
+
+ CHECK_OPEN_PORT();
+
+ DEBUG_FMT("Draining port %s", port->name);
+
+#ifdef _WIN32
+ /* Returns non-zero upon success, 0 upon failure. */
+ if (FlushFileBuffers(port->hdl) == 0)
+ RETURN_FAIL("FlushFileBuffers() failed");
+ RETURN_OK();
+#else
+ int result;
+ while (1) {
+#ifdef __ANDROID__
+ int arg = 1;
+ result = ioctl(port->fd, TCSBRK, &arg);
+#else
+ result = tcdrain(port->fd);
+#endif
+ if (result < 0) {
+ if (errno == EINTR) {
+ DEBUG("tcdrain() was interrupted");
+ continue;
+ } else {
+ RETURN_FAIL("tcdrain() failed");
+ }
+ } else {
+ RETURN_OK();
+ }
+ }
+#endif
+}
+
+SP_API enum sp_return sp_blocking_write(struct sp_port *port, const 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("Writing %d bytes to port %s, timeout %d ms",
+ count, port->name, timeout_ms);
+ else
+ DEBUG_FMT("Writing %d bytes to port %s, no timeout",
+ count, port->name);
+
+ if (count == 0)
+ RETURN_INT(0);
+
+#ifdef _WIN32
+ DWORD bytes_written = 0;
+ BOOL result;
+
+ /* Wait for previous non-blocking write to complete, if any. */
+ if (port->writing) {
+ DEBUG("Waiting for previous write to complete");
+ result = GetOverlappedResult(port->hdl, &port->write_ovl, &bytes_written, TRUE);
+ port->writing = 0;
+ if (!result)
+ RETURN_FAIL("Previous write failed to complete");
+ DEBUG("Previous write completed");
+ }
+
+ /* Set timeout. */
+ if (port->timeouts.WriteTotalTimeoutConstant != timeout_ms) {
+ port->timeouts.WriteTotalTimeoutConstant = timeout_ms;
+ if (SetCommTimeouts(port->hdl, &port->timeouts) == 0)
+ RETURN_FAIL("SetCommTimeouts() failed");
+ }
+
+ /* Start write. */
+ if (WriteFile(port->hdl, buf, count, NULL, &port->write_ovl)) {
+ DEBUG("Write completed immediately");
+ RETURN_INT(count);
+ } else if (GetLastError() == ERROR_IO_PENDING) {
+ DEBUG("Waiting for write to complete");
+ if (GetOverlappedResult(port->hdl, &port->write_ovl, &bytes_written, TRUE) == 0)
+ RETURN_FAIL("GetOverlappedResult() failed");
+ DEBUG_FMT("Write completed, %d/%d bytes written", bytes_written, count);
+ RETURN_INT(bytes_written);
+ } else {
+ RETURN_FAIL("WriteFile() failed");
+ }
+#else
+ size_t bytes_written = 0;
+ unsigned char *ptr = (unsigned char *) buf;
+ struct timeval start, delta, now, end = {0, 0};
+ int started = 0;
+ fd_set fds;
+ int result;
+
+ if (timeout_ms) {
+ /* Get time at start of operation. */
+ gettimeofday(&start, NULL);
+ /* Define duration of timeout. */
+ delta.tv_sec = timeout_ms / 1000;
+ delta.tv_usec = (timeout_ms % 1000) * 1000;
+ /* Calculate time at which we should give up. */
+ timeradd(&start, &delta, &end);
+ }
+
+ FD_ZERO(&fds);
+ FD_SET(port->fd, &fds);
+
+ /* Loop until we have written the requested number of bytes. */
+ while (bytes_written < count) {
+ /*
+ * Check timeout only if we have run select() at least once,
+ * to avoid any issues if a short timeout is reached before
+ * select() is even run.
+ */
+ if (timeout_ms && started) {
+ gettimeofday(&now, NULL);
+ if (timercmp(&now, &end, >))
+ /* Timeout has expired. */
+ break;
+ timersub(&end, &now, &delta);
+ }
+ result = select(port->fd + 1, NULL, &fds, NULL, timeout_ms ? &delta : NULL);
+ started = 1;
+ 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
+ DWORD written = 0;
+ BYTE *ptr = (BYTE *) buf;
+
+ /* 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");
+ }
+
+ /*
+ * Keep writing data until the OS has to actually start an async IO
+ * for it. At that point we know the buffer is full.
+ */
+ while (written < count) {
+ /* Copy first byte of user buffer. */
+ port->pending_byte = *ptr++;
+
+ /* Start asynchronous write. */
+ if (WriteFile(port->hdl, &port->pending_byte, 1, NULL, &port->write_ovl) == 0) {
+ if (GetLastError() == ERROR_IO_PENDING) {
+ if (HasOverlappedIoCompleted(&port->write_ovl)) {
+ DEBUG("Asynchronous write completed immediately");
+ port->writing = 0;
+ written++;
+ continue;
+ } else {
+ DEBUG("Asynchronous write running");
+ port->writing = 1;
+ RETURN_INT(++written);
+ }
+ } else {
+ /* Actual failure of some kind. */
+ RETURN_FAIL("WriteFile() failed");
+ }
+ } else {
+ DEBUG("Single byte written immediately");
+ written++;
+ }
+ }
+
+ DEBUG("All bytes written immediately");
+
+ RETURN_INT(written);
+#else
+ /* Returns the number of bytes written, or -1 upon failure. */
+ ssize_t written = write(port->fd, buf, count);
+
+ if (written < 0)
+ 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 = 0;
+
+ /* 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, count, NULL, &port->read_ovl)) {
+ DEBUG("Read completed immediately");
+ bytes_read = 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(bytes_read);
+
+#else
+ size_t bytes_read = 0;
+ unsigned char *ptr = (unsigned char *) buf;
+ struct timeval start, delta, now, end = {0, 0};
+ int started = 0;
+ fd_set fds;
+ int result;
+
+ if (timeout_ms) {
+ /* Get time at start of operation. */
+ gettimeofday(&start, NULL);
+ /* Define duration of timeout. */
+ delta.tv_sec = timeout_ms / 1000;
+ delta.tv_usec = (timeout_ms % 1000) * 1000;
+ /* Calculate time at which we should give up. */
+ timeradd(&start, &delta, &end);
+ }
+
+ FD_ZERO(&fds);
+ FD_SET(port->fd, &fds);
+
+ /* Loop until we have the requested number of bytes. */
+ while (bytes_read < count) {
+ /*
+ * Check timeout only if we have run select() at least once,
+ * to avoid any issues if a short timeout is reached before
+ * select() is even run.
+ */
+ if (timeout_ms && started) {
+ gettimeofday(&now, NULL);
+ if (timercmp(&now, &end, >))
+ /* Timeout has expired. */
+ break;
+ timersub(&end, &now, &delta);
+ }
+ result = select(port->fd + 1, &fds, NULL, NULL, timeout_ms ? &delta : NULL);
+ started = 1;
+ 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, count, NULL, &port->read_ovl)) {
+ DEBUG("Read completed immediately");
+ bytes_read = 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");
+ 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 timeval start, delta, now, end = {0, 0};
+ int started = 0;
+ fd_set fds;
+ int result;
+
+ if (timeout_ms) {
+ /* Get time at start of operation. */
+ gettimeofday(&start, NULL);
+ /* Define duration of timeout. */
+ delta.tv_sec = timeout_ms / 1000;
+ delta.tv_usec = (timeout_ms % 1000) * 1000;
+ /* Calculate time at which we should give up. */
+ timeradd(&start, &delta, &end);
+ }
+
+ FD_ZERO(&fds);
+ FD_SET(port->fd, &fds);
+
+ /* Loop until we have at least one byte, or timeout is reached. */
+ while (bytes_read == 0) {
+ /*
+ * Check timeout only if we have run select() at least once,
+ * to avoid any issues if a short timeout is reached before
+ * select() is even run.
+ */
+ if (timeout_ms && started) {
+ gettimeofday(&now, NULL);
+ if (timercmp(&now, &end, >))
+ /* Timeout has expired. */
+ break;
+ timersub(&end, &now, &delta);
+ }
+ result = select(port->fd + 1, &fds, NULL, NULL, timeout_ms ? &delta : NULL);
+ started = 1;
+ 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, count, NULL, &port->read_ovl) == 0)
+ RETURN_FAIL("ReadFile() failed");
+
+ /* Get number of bytes read. */
+ if (GetOverlappedResult(port->hdl, &port->read_ovl, &bytes_read, TRUE) == 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);
+
+ 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
+}
+
+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 timeval start, delta, now, end = {0, 0};
+ int started = 0;
+ int result, timeout_remaining_ms;
+ 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;
+ }
+
+ if (timeout_ms) {
+ /* Get time at start of operation. */
+ gettimeofday(&start, NULL);
+ /* Define duration of timeout. */
+ delta.tv_sec = timeout_ms / 1000;
+ delta.tv_usec = (timeout_ms % 1000) * 1000;
+ /* Calculate time at which we should give up. */
+ timeradd(&start, &delta, &end);
+ }
+
+ /* Loop until an event occurs. */
+ while (1) {
+ /*
+ * Check timeout only if we have run poll() at least once,
+ * to avoid any issues if a short timeout is reached before
+ * poll() is even run.
+ */
+ if (timeout_ms && started) {
+ gettimeofday(&now, NULL);
+ if (timercmp(&now, &end, >)) {
+ DEBUG("Wait timed out");
+ break;
+ }
+ timersub(&end, &now, &delta);
+ timeout_remaining_ms = delta.tv_sec * 1000 + delta.tv_usec / 1000;
+ }
+
+ result = poll(pollfds, event_set->count, timeout_ms ? timeout_remaining_ms : -1);
+ started = 1;
+
+ 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");
+ 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;
+
+ config->bits = data->dcb.ByteSize;
+
+ if (data->dcb.fParity)
+ switch (data->dcb.Parity) {
+ case NOPARITY:
+ config->parity = SP_PARITY_NONE;
+ break;
+ case ODDPARITY:
+ config->parity = SP_PARITY_ODD;
+ break;
+ case EVENPARITY:
+ config->parity = SP_PARITY_EVEN;
+ break;
+ case MARKPARITY:
+ config->parity = SP_PARITY_MARK;
+ break;
+ case SPACEPARITY:
+ config->parity = SP_PARITY_SPACE;
+ break;
+ default:
+ config->parity = -1;
+ }
+ else
+ config->parity = SP_PARITY_NONE;
+
+ switch (data->dcb.StopBits) {
+ case ONESTOPBIT:
+ config->stopbits = 1;
+ break;
+ case TWOSTOPBITS:
+ config->stopbits = 2;
+ break;
+ default:
+ config->stopbits = -1;
+ }
+
+ switch (data->dcb.fRtsControl) {
+ case RTS_CONTROL_DISABLE:
+ config->rts = SP_RTS_OFF;
+ break;
+ case RTS_CONTROL_ENABLE:
+ config->rts = SP_RTS_ON;
+ break;
+ case RTS_CONTROL_HANDSHAKE:
+ config->rts = SP_RTS_FLOW_CONTROL;
+ break;
+ default:
+ config->rts = -1;
+ }
+
+ config->cts = data->dcb.fOutxCtsFlow ? SP_CTS_FLOW_CONTROL : SP_CTS_IGNORE;
+
+ switch (data->dcb.fDtrControl) {
+ case DTR_CONTROL_DISABLE:
+ config->dtr = SP_DTR_OFF;
+ break;
+ case DTR_CONTROL_ENABLE:
+ config->dtr = SP_DTR_ON;
+ break;
+ case DTR_CONTROL_HANDSHAKE:
+ config->dtr = SP_DTR_FLOW_CONTROL;
+ break;
+ default:
+ config->dtr = -1;
+ }
+
+ config->dsr = data->dcb.fOutxDsrFlow ? SP_DSR_FLOW_CONTROL : SP_DSR_IGNORE;
+
+ if (data->dcb.fInX) {
+ if (data->dcb.fOutX)
+ config->xon_xoff = SP_XONXOFF_INOUT;
+ else
+ config->xon_xoff = SP_XONXOFF_IN;
+ } else {
+ if (data->dcb.fOutX)
+ config->xon_xoff = SP_XONXOFF_OUT;
+ else
+ config->xon_xoff = SP_XONXOFF_DISABLED;
+ }
+
+#else // !_WIN32
+
+ if (tcgetattr(port->fd, &data->term) < 0)
+ RETURN_FAIL("tcgetattr() failed");
+
+ if (ioctl(port->fd, TIOCMGET, &data->controlbits) < 0)
+ RETURN_FAIL("TIOCMGET ioctl failed");
+
+#ifdef USE_TERMIOX
+ int ret = get_flow(port->fd, data);
+
+ if (ret == SP_ERR_FAIL && errno == EINVAL)
+ data->termiox_supported = 0;
+ else if (ret < 0)
+ RETURN_CODEVAL(ret);
+ else
+ data->termiox_supported = 1;
+#else
+ data->termiox_supported = 0;
+#endif
+
+ for (i = 0; i < NUM_STD_BAUDRATES; i++) {
+ if (cfgetispeed(&data->term) == std_baudrates[i].index) {
+ config->baudrate = std_baudrates[i].value;
+ break;
+ }
+ }
+
+ if (i == NUM_STD_BAUDRATES) {
+#ifdef __APPLE__
+ config->baudrate = (int)data->term.c_ispeed;
+#elif defined(USE_TERMIOS_SPEED)
+ TRY(get_baudrate(port->fd, &config->baudrate));
+#else
+ config->baudrate = -1;
+#endif
+ }
+
+ switch (data->term.c_cflag & CSIZE) {
+ case CS8:
+ config->bits = 8;
+ break;
+ case CS7:
+ config->bits = 7;
+ break;
+ case CS6:
+ config->bits = 6;
+ break;
+ case CS5:
+ config->bits = 5;
+ break;
+ default:
+ config->bits = -1;
+ }
+
+ if (!(data->term.c_cflag & PARENB) && (data->term.c_iflag & IGNPAR))
+ config->parity = SP_PARITY_NONE;
+ else if (!(data->term.c_cflag & PARENB) || (data->term.c_iflag & IGNPAR))
+ config->parity = -1;
+#ifdef CMSPAR
+ else if (data->term.c_cflag & CMSPAR)
+ config->parity = (data->term.c_cflag & PARODD) ? SP_PARITY_MARK : SP_PARITY_SPACE;
+#endif
+ else
+ config->parity = (data->term.c_cflag & PARODD) ? SP_PARITY_ODD : SP_PARITY_EVEN;
+
+ config->stopbits = (data->term.c_cflag & CSTOPB) ? 2 : 1;
+
+ if (data->term.c_cflag & CRTSCTS) {
+ config->rts = SP_RTS_FLOW_CONTROL;
+ config->cts = SP_CTS_FLOW_CONTROL;
+ } else {
+ if (data->termiox_supported && data->rts_flow)
+ config->rts = SP_RTS_FLOW_CONTROL;
+ else
+ config->rts = (data->controlbits & TIOCM_RTS) ? SP_RTS_ON : SP_RTS_OFF;
+
+ config->cts = (data->termiox_supported && data->cts_flow) ?
+ SP_CTS_FLOW_CONTROL : SP_CTS_IGNORE;
+ }
+
+ if (data->termiox_supported && data->dtr_flow)
+ config->dtr = SP_DTR_FLOW_CONTROL;
+ else
+ config->dtr = (data->controlbits & TIOCM_DTR) ? SP_DTR_ON : SP_DTR_OFF;
+
+ config->dsr = (data->termiox_supported && data->dsr_flow) ?
+ SP_DSR_FLOW_CONTROL : SP_DSR_IGNORE;
+
+ if (data->term.c_iflag & IXOFF) {
+ if (data->term.c_iflag & IXON)
+ config->xon_xoff = SP_XONXOFF_INOUT;
+ else
+ config->xon_xoff = SP_XONXOFF_IN;
+ } else {
+ if (data->term.c_iflag & IXON)
+ config->xon_xoff = SP_XONXOFF_OUT;
+ else
+ config->xon_xoff = SP_XONXOFF_DISABLED;
+ }
+#endif
+
+ RETURN_OK();
+}
+
+static enum sp_return set_config(struct sp_port *port, struct port_data *data,
+ const struct sp_port_config *config)
+{
+ unsigned int i;
+#ifdef __APPLE__
+ BAUD_TYPE baud_nonstd;
+
+ baud_nonstd = B0;
+#endif
+#ifdef USE_TERMIOS_SPEED
+ int baud_nonstd = 0;
+#endif
+
+ TRACE("%p, %p, %p", port, data, config);
+
+ DEBUG_FMT("Setting configuration for port %s", port->name);
+