/** * FreeRDP: A Remote Desktop Protocol Implementation * Serial Port Device Service Virtual Channel * * Copyright 2011 O.S. Systems Software Ltda. * Copyright 2011 Eduardo Fiss Beloni * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ #ifdef HAVE_CONFIG_H #include "config.h" #endif #include #include #include #include #include #include #include #include #include #ifndef _WIN32 #include #include #include #include #endif #include #include #include #include #include "serial_tty.h" #include "serial_constants.h" #ifdef HAVE_SYS_MODEM_H #include #endif #ifdef HAVE_SYS_FILIO_H #include #endif #ifdef HAVE_SYS_STRTIO_H #include #endif #ifndef CRTSCTS #define CRTSCTS 0 #endif /* FIONREAD should really do the same thing as TIOCINQ, where it is not available */ #if !defined(TIOCINQ) && defined(FIONREAD) #define TIOCINQ FIONREAD #endif #if !defined(TIOCOUTQ) && defined(FIONWRITE) #define TIOCOUTQ FIONWRITE #endif static UINT32 tty_write_data(SERIAL_TTY* tty, BYTE* data, int len); static void tty_set_termios(SERIAL_TTY* tty); static BOOL tty_get_termios(SERIAL_TTY* tty); static int tty_get_error_status(); UINT32 serial_tty_control(SERIAL_TTY* tty, UINT32 IoControlCode, wStream* input, wStream* output, UINT32* abort_io) { int purge_mask; UINT32 result; UINT32 modemstate; BYTE immediate; UINT32 ret = STATUS_SUCCESS; UINT32 length = 0; UINT32 pos; DEBUG_SVC("in"); Stream_Seek(output, sizeof(UINT32)); switch (IoControlCode) { case IOCTL_SERIAL_SET_BAUD_RATE: stream_read_UINT32(input, tty->baud_rate); tty_set_termios(tty); DEBUG_SVC("SERIAL_SET_BAUD_RATE %d", tty->baud_rate); break; case IOCTL_SERIAL_GET_BAUD_RATE: length = 4; stream_write_UINT32(output, tty->baud_rate); DEBUG_SVC("SERIAL_GET_BAUD_RATE %d", tty->baud_rate); break; case IOCTL_SERIAL_SET_QUEUE_SIZE: stream_read_UINT32(input, tty->queue_in_size); stream_read_UINT32(input, tty->queue_out_size); DEBUG_SVC("SERIAL_SET_QUEUE_SIZE in %d out %d", tty->queue_in_size, tty->queue_out_size); break; case IOCTL_SERIAL_SET_LINE_CONTROL: stream_read_BYTE(input, tty->stop_bits); stream_read_BYTE(input, tty->parity); stream_read_BYTE(input, tty->word_length); tty_set_termios(tty); DEBUG_SVC("SERIAL_SET_LINE_CONTROL stop %d parity %d word %d", tty->stop_bits, tty->parity, tty->word_length); break; case IOCTL_SERIAL_GET_LINE_CONTROL: DEBUG_SVC("SERIAL_GET_LINE_CONTROL"); length = 3; stream_write_BYTE(output, tty->stop_bits); stream_write_BYTE(output, tty->parity); stream_write_BYTE(output, tty->word_length); break; case IOCTL_SERIAL_IMMEDIATE_CHAR: DEBUG_SVC("SERIAL_IMMEDIATE_CHAR"); stream_read_BYTE(input, immediate); tty_write_data(tty, &immediate, 1); break; case IOCTL_SERIAL_CONFIG_SIZE: DEBUG_SVC("SERIAL_CONFIG_SIZE"); length = 4; stream_write_UINT32(output, 0); break; case IOCTL_SERIAL_GET_CHARS: DEBUG_SVC("SERIAL_GET_CHARS"); length = 6; stream_write(output, tty->chars, 6); break; case IOCTL_SERIAL_SET_CHARS: DEBUG_SVC("SERIAL_SET_CHARS"); stream_read(input, tty->chars, 6); tty_set_termios(tty); break; case IOCTL_SERIAL_GET_HANDFLOW: length = 16; tty_get_termios(tty); stream_write_UINT32(output, tty->control); stream_write_UINT32(output, tty->xonoff); stream_write_UINT32(output, tty->onlimit); stream_write_UINT32(output, tty->offlimit); DEBUG_SVC("IOCTL_SERIAL_GET_HANDFLOW %X %X %X %X", tty->control, tty->xonoff, tty->onlimit, tty->offlimit); break; case IOCTL_SERIAL_SET_HANDFLOW: stream_read_UINT32(input, tty->control); stream_read_UINT32(input, tty->xonoff); stream_read_UINT32(input, tty->onlimit); stream_read_UINT32(input, tty->offlimit); DEBUG_SVC("IOCTL_SERIAL_SET_HANDFLOW %X %X %X %X", tty->control, tty->xonoff, tty->onlimit, tty->offlimit); tty_set_termios(tty); break; case IOCTL_SERIAL_SET_TIMEOUTS: stream_read_UINT32(input, tty->read_interval_timeout); stream_read_UINT32(input, tty->read_total_timeout_multiplier); stream_read_UINT32(input, tty->read_total_timeout_constant); stream_read_UINT32(input, tty->write_total_timeout_multiplier); stream_read_UINT32(input, tty->write_total_timeout_constant); /* http://www.codeproject.com/KB/system/chaiyasit_t.aspx, see 'ReadIntervalTimeout' section http://msdn.microsoft.com/en-us/library/ms885171.aspx */ if (tty->read_interval_timeout == SERIAL_TIMEOUT_MAX) { tty->read_interval_timeout = 0; tty->read_total_timeout_multiplier = 0; } DEBUG_SVC("SERIAL_SET_TIMEOUTS read timeout %d %d %d", tty->read_interval_timeout, tty->read_total_timeout_multiplier, tty->read_total_timeout_constant); break; case IOCTL_SERIAL_GET_TIMEOUTS: DEBUG_SVC("SERIAL_GET_TIMEOUTS read timeout %d %d %d", tty->read_interval_timeout, tty->read_total_timeout_multiplier, tty->read_total_timeout_constant); length = 20; stream_write_UINT32(output, tty->read_interval_timeout); stream_write_UINT32(output, tty->read_total_timeout_multiplier); stream_write_UINT32(output, tty->read_total_timeout_constant); stream_write_UINT32(output, tty->write_total_timeout_multiplier); stream_write_UINT32(output, tty->write_total_timeout_constant); break; case IOCTL_SERIAL_GET_WAIT_MASK: DEBUG_SVC("SERIAL_GET_WAIT_MASK %X", tty->wait_mask); length = 4; stream_write_UINT32(output, tty->wait_mask); break; case IOCTL_SERIAL_SET_WAIT_MASK: stream_read_UINT32(input, tty->wait_mask); DEBUG_SVC("SERIAL_SET_WAIT_MASK %X", tty->wait_mask); break; case IOCTL_SERIAL_SET_DTR: DEBUG_SVC("SERIAL_SET_DTR"); ioctl(tty->fd, TIOCMGET, &result); result |= TIOCM_DTR; ioctl(tty->fd, TIOCMSET, &result); tty->dtr = 1; break; case IOCTL_SERIAL_CLR_DTR: DEBUG_SVC("SERIAL_CLR_DTR"); ioctl(tty->fd, TIOCMGET, &result); result &= ~TIOCM_DTR; ioctl(tty->fd, TIOCMSET, &result); tty->dtr = 0; break; case IOCTL_SERIAL_SET_RTS: DEBUG_SVC("SERIAL_SET_RTS"); ioctl(tty->fd, TIOCMGET, &result); result |= TIOCM_RTS; ioctl(tty->fd, TIOCMSET, &result); tty->rts = 1; break; case IOCTL_SERIAL_CLR_RTS: DEBUG_SVC("SERIAL_CLR_RTS"); ioctl(tty->fd, TIOCMGET, &result); result &= ~TIOCM_RTS; ioctl(tty->fd, TIOCMSET, &result); tty->rts = 0; break; case IOCTL_SERIAL_GET_MODEMSTATUS: modemstate = 0; #ifdef TIOCMGET ioctl(tty->fd, TIOCMGET, &result); if (result & TIOCM_CTS) modemstate |= SERIAL_MS_CTS; if (result & TIOCM_DSR) modemstate |= SERIAL_MS_DSR; if (result & TIOCM_RNG) modemstate |= SERIAL_MS_RNG; if (result & TIOCM_CAR) modemstate |= SERIAL_MS_CAR; if (result & TIOCM_DTR) modemstate |= SERIAL_MS_DTR; if (result & TIOCM_RTS) modemstate |= SERIAL_MS_RTS; #endif DEBUG_SVC("SERIAL_GET_MODEMSTATUS %X", modemstate); length = 4; stream_write_UINT32(output, modemstate); break; case IOCTL_SERIAL_GET_COMMSTATUS: length = 18; stream_write_UINT32(output, 0); /* Errors */ stream_write_UINT32(output, 0); /* Hold reasons */ result = 0; #ifdef TIOCINQ ioctl(tty->fd, TIOCINQ, &result); #endif stream_write_UINT32(output, result); /* Amount in in queue */ if (result) DEBUG_SVC("SERIAL_GET_COMMSTATUS in queue %d", result); result = 0; #ifdef TIOCOUTQ ioctl(tty->fd, TIOCOUTQ, &result); #endif stream_write_UINT32(output, result); /* Amount in out queue */ DEBUG_SVC("SERIAL_GET_COMMSTATUS out queue %d", result); stream_write_BYTE(output, 0); /* EofReceived */ stream_write_BYTE(output, 0); /* WaitForImmediate */ break; case IOCTL_SERIAL_PURGE: stream_read_UINT32(input, purge_mask); DEBUG_SVC("SERIAL_PURGE purge_mask %X", purge_mask); /* See http://msdn.microsoft.com/en-us/library/ms901431.aspx PURGE_TXCLEAR Clears the output buffer, if the driver has one. PURGE_RXCLEAR Clears the input buffer, if the driver has one. It clearly states to clear the *driver* buffer, not the port buffer */ #ifdef DEBUG_SVC if (purge_mask & SERIAL_PURGE_TXCLEAR) DEBUG_SVC("Ignoring SERIAL_PURGE_TXCLEAR"); if (purge_mask & SERIAL_PURGE_RXCLEAR) DEBUG_SVC("Ignoring SERIAL_PURGE_RXCLEAR"); #endif if (purge_mask & SERIAL_PURGE_TXABORT) *abort_io |= SERIAL_ABORT_IO_WRITE; if (purge_mask & SERIAL_PURGE_RXABORT) *abort_io |= SERIAL_ABORT_IO_READ; break; case IOCTL_SERIAL_WAIT_ON_MASK: DEBUG_SVC("SERIAL_WAIT_ON_MASK %X", tty->wait_mask); tty->event_pending = 1; length = 4; if (serial_tty_get_event(tty, &result)) { DEBUG_SVC("WAIT end event = %X", result); stream_write_UINT32(output, result); break; } ret = STATUS_PENDING; break; case IOCTL_SERIAL_SET_BREAK_ON: DEBUG_SVC("SERIAL_SET_BREAK_ON"); tcsendbreak(tty->fd, 0); break; case IOCTL_SERIAL_RESET_DEVICE: DEBUG_SVC("SERIAL_RESET_DEVICE"); break; case IOCTL_SERIAL_SET_BREAK_OFF: DEBUG_SVC("SERIAL_SET_BREAK_OFF"); break; case IOCTL_SERIAL_SET_XOFF: DEBUG_SVC("SERIAL_SET_XOFF"); break; case IOCTL_SERIAL_SET_XON: DEBUG_SVC("SERIAL_SET_XON"); tcflow(tty->fd, TCION); break; default: DEBUG_SVC("NOT FOUND IoControlCode SERIAL IOCTL %d", IoControlCode); return STATUS_INVALID_PARAMETER; } /* Write OutputBufferLength */ pos = Stream_GetPosition(output); Stream_SetPosition(output, 16); stream_write_UINT32(output, length); Stream_SetPosition(output, pos); return ret; } BOOL serial_tty_read(SERIAL_TTY* tty, BYTE* buffer, UINT32* Length) { ssize_t status; long timeout = 90; struct termios* ptermios; DEBUG_SVC("in"); ptermios = tty->ptermios; /* Set timeouts kind of like the windows serial timeout parameters. Multiply timeout with requested read size */ if (tty->read_total_timeout_multiplier | tty->read_total_timeout_constant) { timeout = (tty->read_total_timeout_multiplier * (*Length) + tty->read_total_timeout_constant + 99) / 100; } else if (tty->read_interval_timeout) { timeout = (tty->read_interval_timeout * (*Length) + 99) / 100; } /* If a timeout is set, do a blocking read, which times out after some time. It will make FreeRDP less responsive, but it will improve serial performance, by not reading one character at a time. */ if (timeout == 0) { ptermios->c_cc[VTIME] = 0; ptermios->c_cc[VMIN] = 0; } else { ptermios->c_cc[VTIME] = timeout; ptermios->c_cc[VMIN] = 1; } tcsetattr(tty->fd, TCSANOW, ptermios); ZeroMemory(buffer, *Length); status = read(tty->fd, buffer, *Length); if (status < 0) return FALSE; tty->event_txempty = status; *Length = status; return TRUE; } BOOL serial_tty_write(SERIAL_TTY* tty, BYTE* buffer, UINT32 Length) { ssize_t status; UINT32 event_txempty = Length; DEBUG_SVC("in"); while (Length > 0) { status = write(tty->fd, buffer, Length); if (status < 0) { return FALSE; } Length -= status; buffer += status; } tty->event_txempty = event_txempty; return TRUE; } /** * This function is used to deallocated a SERIAL_TTY structure. * * @param tty [in] - pointer to the SERIAL_TTY structure to deallocate. * This will typically be allocated by a call to serial_tty_new(). * On return, this pointer is invalid. */ void serial_tty_free(SERIAL_TTY* tty) { DEBUG_SVC("in"); if (tty->fd >= 0) { if (tty->pold_termios) tcsetattr(tty->fd, TCSANOW, tty->pold_termios); close(tty->fd); } free(tty->ptermios); free(tty->pold_termios); free(tty); } SERIAL_TTY* serial_tty_new(const char* path, UINT32 id) { SERIAL_TTY* tty; tty = (SERIAL_TTY*) malloc(sizeof(SERIAL_TTY)); ZeroMemory(tty, sizeof(SERIAL_TTY)); tty->id = id; tty->fd = open(path, O_RDWR | O_NOCTTY | O_NONBLOCK); if (tty->fd < 0) { perror("open"); DEBUG_WARN("failed to open device %s", path); serial_tty_free(tty); return NULL; } else { DEBUG_SVC("tty fd %d successfully opened", tty->fd); } tty->ptermios = (struct termios*) malloc(sizeof(struct termios)); ZeroMemory(tty->ptermios, sizeof(struct termios)); if (tty->ptermios == NULL) { serial_tty_free(tty); return NULL ; } tty->pold_termios = (struct termios*) malloc(sizeof(struct termios)); ZeroMemory(tty->pold_termios, sizeof(struct termios)); if (tty->pold_termios == NULL) { serial_tty_free(tty); return NULL; } tcgetattr(tty->fd, tty->pold_termios); if (!tty_get_termios(tty)) { DEBUG_WARN("%s access denied", path); fflush(stdout); serial_tty_free(tty); return NULL; } tty->ptermios->c_iflag &= ~(IGNBRK | BRKINT | PARMRK | ISTRIP | INLCR | IGNCR | ICRNL | IXON); tty->ptermios->c_iflag = IGNPAR | ICRNL; tty->ptermios->c_oflag &= ~OPOST; tty->ptermios->c_lflag &= ~(ECHO | ECHONL | ICANON | ISIG | IEXTEN); tty->ptermios->c_cflag &= ~(CSIZE | PARENB); tty->ptermios->c_cflag |= CLOCAL | CREAD | CS8; tcsetattr(tty->fd, TCSANOW, tty->ptermios); tty->event_txempty = 0; tty->event_cts = 0; tty->event_dsr = 0; tty->event_rlsd = 0; tty->event_pending = 0; /* all read and writes should be non-blocking */ if (fcntl(tty->fd, F_SETFL, O_NONBLOCK) == -1) { DEBUG_WARN("%s fcntl", path); perror("fcntl"); serial_tty_free(tty) ; return NULL; } tty->read_total_timeout_constant = 5; return tty; } BOOL serial_tty_get_event(SERIAL_TTY* tty, UINT32* result) { int bytes; BOOL status = FALSE; DEBUG_SVC("in"); *result = 0; #ifdef TIOCINQ /* When wait_mask is set to zero we ought to cancel it all For reference: http://msdn.microsoft.com/en-us/library/aa910487.aspx */ if (tty->wait_mask == 0) { tty->event_pending = 0; return TRUE; } ioctl(tty->fd, TIOCINQ, &bytes); if (bytes > 0) { DEBUG_SVC("bytes %d", bytes); if (bytes > tty->event_rlsd) { tty->event_rlsd = bytes; if (tty->wait_mask & SERIAL_EV_RLSD) { DEBUG_SVC("SERIAL_EV_RLSD"); *result |= SERIAL_EV_RLSD; status = TRUE; } } if ((bytes > 1) && (tty->wait_mask & SERIAL_EV_RXFLAG)) { DEBUG_SVC("SERIAL_EV_RXFLAG bytes %d", bytes); *result |= SERIAL_EV_RXFLAG; status = TRUE; } if ((tty->wait_mask & SERIAL_EV_RXCHAR)) { DEBUG_SVC("SERIAL_EV_RXCHAR bytes %d", bytes); *result |= SERIAL_EV_RXCHAR; status = TRUE; } } else { tty->event_rlsd = 0; } #endif #ifdef TIOCOUTQ ioctl(tty->fd, TIOCOUTQ, &bytes); if ((bytes == 0) && (tty->event_txempty > 0) && (tty->wait_mask & SERIAL_EV_TXEMPTY)) { DEBUG_SVC("SERIAL_EV_TXEMPTY"); *result |= SERIAL_EV_TXEMPTY; status = TRUE; } tty->event_txempty = bytes; #endif ioctl(tty->fd, TIOCMGET, &bytes); if ((bytes & TIOCM_DSR) != tty->event_dsr) { tty->event_dsr = bytes & TIOCM_DSR; if (tty->wait_mask & SERIAL_EV_DSR) { DEBUG_SVC("SERIAL_EV_DSR %s", (bytes & TIOCM_DSR) ? "ON" : "OFF"); *result |= SERIAL_EV_DSR; status = TRUE; } } if ((bytes & TIOCM_CTS) != tty->event_cts) { tty->event_cts = bytes & TIOCM_CTS; if (tty->wait_mask & SERIAL_EV_CTS) { DEBUG_SVC("SERIAL_EV_CTS %s", (bytes & TIOCM_CTS) ? "ON" : "OFF"); *result |= SERIAL_EV_CTS; status = TRUE; } } if (status) tty->event_pending = 0; return status; } static BOOL tty_get_termios(SERIAL_TTY* tty) { speed_t speed; struct termios* ptermios; ptermios = tty->ptermios; DEBUG_SVC("tcgetattr? %d", tcgetattr(tty->fd, ptermios) >= 0); if (tcgetattr(tty->fd, ptermios) < 0) return FALSE; speed = cfgetispeed(ptermios); switch (speed) { #ifdef B75 case B75: tty->baud_rate = 75; break; #endif #ifdef B110 case B110: tty->baud_rate = 110; break; #endif #ifdef B134 case B134: tty->baud_rate = 134; break; #endif #ifdef B150 case B150: tty->baud_rate = 150; break; #endif #ifdef B300 case B300: tty->baud_rate = 300; break; #endif #ifdef B600 case B600: tty->baud_rate = 600; break; #endif #ifdef B1200 case B1200: tty->baud_rate = 1200; break; #endif #ifdef B1800 case B1800: tty->baud_rate = 1800; break; #endif #ifdef B2400 case B2400: tty->baud_rate = 2400; break; #endif #ifdef B4800 case B4800: tty->baud_rate = 4800; break; #endif #ifdef B9600 case B9600: tty->baud_rate = 9600; break; #endif #ifdef B19200 case B19200: tty->baud_rate = 19200; break; #endif #ifdef B38400 case B38400: tty->baud_rate = 38400; break; #endif #ifdef B57600 case B57600: tty->baud_rate = 57600; break; #endif #ifdef B115200 case B115200: tty->baud_rate = 115200; break; #endif #ifdef B230400 case B230400: tty->baud_rate = 230400; break; #endif #ifdef B460800 case B460800: tty->baud_rate = 460800; break; #endif default: tty->baud_rate = 9600; break; } speed = cfgetospeed(ptermios); tty->dtr = (speed == B0) ? 0 : 1; tty->stop_bits = (ptermios->c_cflag & CSTOPB) ? SERIAL_STOP_BITS_2 : SERIAL_STOP_BITS_1; tty->parity = (ptermios->c_cflag & PARENB) ? ((ptermios->c_cflag & PARODD) ? SERIAL_ODD_PARITY : SERIAL_EVEN_PARITY) : SERIAL_NO_PARITY; switch (ptermios->c_cflag & CSIZE) { case CS5: tty->word_length = 5; break; case CS6: tty->word_length = 6; break; case CS7: tty->word_length = 7; break; default: tty->word_length = 8; break; } if (ptermios->c_cflag & CRTSCTS) { tty->control = SERIAL_DTR_CONTROL | SERIAL_CTS_HANDSHAKE | SERIAL_ERROR_ABORT; } else { tty->control = SERIAL_DTR_CONTROL | SERIAL_ERROR_ABORT; } tty->xonoff = SERIAL_DSR_SENSITIVITY; if (ptermios->c_iflag & IXON) tty->xonoff |= SERIAL_XON_HANDSHAKE; if (ptermios->c_iflag & IXOFF) tty->xonoff |= SERIAL_XOFF_HANDSHAKE; tty->chars[SERIAL_CHAR_XON] = ptermios->c_cc[VSTART]; tty->chars[SERIAL_CHAR_XOFF] = ptermios->c_cc[VSTOP]; tty->chars[SERIAL_CHAR_EOF] = ptermios->c_cc[VEOF]; tty->chars[SERIAL_CHAR_BREAK] = ptermios->c_cc[VINTR]; tty->chars[SERIAL_CHAR_ERROR] = ptermios->c_cc[VKILL]; return TRUE; } static void tty_set_termios(SERIAL_TTY* tty) { speed_t speed; struct termios *ptermios; DEBUG_SVC("in"); ptermios = tty->ptermios; switch (tty->baud_rate) { #ifdef B75 case 75: speed = B75; break; #endif #ifdef B110 case 110: speed = B110; break; #endif #ifdef B134 case 134: speed = B134; break; #endif #ifdef B150 case 150: speed = B150; break; #endif #ifdef B300 case 300: speed = B300; break; #endif #ifdef B600 case 600: speed = B600; break; #endif #ifdef B1200 case 1200: speed = B1200; break; #endif #ifdef B1800 case 1800: speed = B1800; break; #endif #ifdef B2400 case 2400: speed = B2400; break; #endif #ifdef B4800 case 4800: speed = B4800; break; #endif #ifdef B9600 case 9600: speed = B9600; break; #endif #ifdef B19200 case 19200: speed = B19200; break; #endif #ifdef B38400 case 38400: speed = B38400; break; #endif #ifdef B57600 case 57600: speed = B57600; break; #endif #ifdef B115200 case 115200: speed = B115200; break; #endif #ifdef B230400 case 230400: speed = B115200; break; #endif #ifdef B460800 case 460800: speed = B115200; break; #endif default: speed = B9600; break; } #ifdef CBAUD ptermios->c_cflag &= ~CBAUD; ptermios->c_cflag |= speed; #else /* on systems with separate ispeed and ospeed, we can remember the speed in ispeed while changing DTR with ospeed */ cfsetispeed(tty->ptermios, speed); cfsetospeed(tty->ptermios, tty->dtr ? speed : 0); #endif ptermios->c_cflag &= ~(CSTOPB | PARENB | PARODD | CSIZE | CRTSCTS); switch (tty->stop_bits) { case SERIAL_STOP_BITS_2: ptermios->c_cflag |= CSTOPB; break; default: ptermios->c_cflag &= ~CSTOPB; break; } switch (tty->parity) { case SERIAL_EVEN_PARITY: ptermios->c_cflag |= PARENB; break; case SERIAL_ODD_PARITY: ptermios->c_cflag |= PARENB | PARODD; break; case SERIAL_NO_PARITY: ptermios->c_cflag &= ~(PARENB | PARODD); break; } switch (tty->word_length) { case 5: ptermios->c_cflag |= CS5; break; case 6: ptermios->c_cflag |= CS6; break; case 7: ptermios->c_cflag |= CS7; break; default: ptermios->c_cflag |= CS8; break; } #if 0 if (tty->rts) ptermios->c_cflag |= CRTSCTS; else ptermios->c_cflag &= ~CRTSCTS; #endif if (tty->control & SERIAL_CTS_HANDSHAKE) { ptermios->c_cflag |= CRTSCTS; } else { ptermios->c_cflag &= ~CRTSCTS; } if (tty->xonoff & SERIAL_XON_HANDSHAKE) { ptermios->c_iflag |= IXON | IMAXBEL; } if (tty->xonoff & SERIAL_XOFF_HANDSHAKE) { ptermios->c_iflag |= IXOFF | IMAXBEL; } if ((tty->xonoff & (SERIAL_XOFF_HANDSHAKE | SERIAL_XON_HANDSHAKE)) == 0) { ptermios->c_iflag &= ~IXON; ptermios->c_iflag &= ~IXOFF; } ptermios->c_cc[VSTART] = tty->chars[SERIAL_CHAR_XON]; ptermios->c_cc[VSTOP] = tty->chars[SERIAL_CHAR_XOFF]; ptermios->c_cc[VEOF] = tty->chars[SERIAL_CHAR_EOF]; ptermios->c_cc[VINTR] = tty->chars[SERIAL_CHAR_BREAK]; ptermios->c_cc[VKILL] = tty->chars[SERIAL_CHAR_ERROR]; tcsetattr(tty->fd, TCSANOW, ptermios); } static UINT32 tty_write_data(SERIAL_TTY* tty, BYTE* data, int len) { ssize_t status; DEBUG_SVC("in"); status = write(tty->fd, data, len); if (status < 0) return tty_get_error_status(); tty->event_txempty = status; return STATUS_SUCCESS; } static int tty_get_error_status() { DEBUG_SVC("in errno %d", errno); switch (errno) { case EACCES: case ENOTDIR: case ENFILE: return STATUS_ACCESS_DENIED; case EISDIR: return STATUS_FILE_IS_A_DIRECTORY; case EEXIST: return STATUS_OBJECT_NAME_COLLISION; case EBADF: return STATUS_INVALID_HANDLE; default: return STATUS_NO_SUCH_FILE; } }