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/*
* Serial device support
*
* Copyright 1993 Erik Bos
* Copyright 1996 Marcus Meissner
* Copyright 2005,2006 Eric Pouech
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
#if 0
#pragma makedep unix
#endif
#include "config.h"
#include "wine/port.h"
#include <errno.h>
#include <string.h>
#include <stdlib.h>
#include <stdarg.h>
#include <stdio.h>
#ifdef HAVE_TERMIOS_H
#include <termios.h>
#endif
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif
#include <fcntl.h>
#ifdef HAVE_SYS_STAT_H
# include <sys/stat.h>
#endif
#include <sys/types.h>
#ifdef HAVE_SYS_FILIO_H
# include <sys/filio.h>
#endif
#ifdef HAVE_SYS_IOCTL_H
#include <sys/ioctl.h>
#endif
#ifdef HAVE_SYS_POLL_H
# include <sys/poll.h>
#endif
#ifdef HAVE_SYS_MODEM_H
# include <sys/modem.h>
#endif
#ifdef HAVE_SYS_STRTIO_H
# include <sys/strtio.h>
#endif
#include "ntstatus.h"
#define WIN32_NO_STATUS
#define NONAMELESSUNION
#include "windef.h"
#include "winternl.h"
#include "winioctl.h"
#include "ddk/ntddser.h"
#include "wine/server.h"
#include "unix_private.h"
#include "wine/debug.h"
#ifdef HAVE_LINUX_SERIAL_H
#ifdef HAVE_ASM_TYPES_H
#include <asm/types.h>
#endif
#include <linux/serial.h>
#endif
#if !defined(TIOCINQ) && defined(FIONREAD)
#define TIOCINQ FIONREAD
#endif
WINE_DEFAULT_DEBUG_CHANNEL(comm);
static const char* iocode2str(DWORD ioc)
{
switch (ioc)
{
#define X(x) case (x): return #x
X(IOCTL_SERIAL_CLEAR_STATS);
X(IOCTL_SERIAL_CLR_DTR);
X(IOCTL_SERIAL_CLR_RTS);
X(IOCTL_SERIAL_CONFIG_SIZE);
X(IOCTL_SERIAL_GET_BAUD_RATE);
X(IOCTL_SERIAL_GET_CHARS);
X(IOCTL_SERIAL_GET_COMMSTATUS);
X(IOCTL_SERIAL_GET_DTRRTS);
X(IOCTL_SERIAL_GET_HANDFLOW);
X(IOCTL_SERIAL_GET_LINE_CONTROL);
X(IOCTL_SERIAL_GET_MODEM_CONTROL);
X(IOCTL_SERIAL_GET_MODEMSTATUS);
X(IOCTL_SERIAL_GET_PROPERTIES);
X(IOCTL_SERIAL_GET_STATS);
X(IOCTL_SERIAL_GET_TIMEOUTS);
X(IOCTL_SERIAL_GET_WAIT_MASK);
X(IOCTL_SERIAL_IMMEDIATE_CHAR);
X(IOCTL_SERIAL_LSRMST_INSERT);
X(IOCTL_SERIAL_PURGE);
X(IOCTL_SERIAL_RESET_DEVICE);
X(IOCTL_SERIAL_SET_BAUD_RATE);
X(IOCTL_SERIAL_SET_BREAK_ON);
X(IOCTL_SERIAL_SET_BREAK_OFF);
X(IOCTL_SERIAL_SET_CHARS);
X(IOCTL_SERIAL_SET_DTR);
X(IOCTL_SERIAL_SET_FIFO_CONTROL);
X(IOCTL_SERIAL_SET_HANDFLOW);
X(IOCTL_SERIAL_SET_LINE_CONTROL);
X(IOCTL_SERIAL_SET_MODEM_CONTROL);
X(IOCTL_SERIAL_SET_QUEUE_SIZE);
X(IOCTL_SERIAL_SET_RTS);
X(IOCTL_SERIAL_SET_TIMEOUTS);
X(IOCTL_SERIAL_SET_WAIT_MASK);
X(IOCTL_SERIAL_SET_XOFF);
X(IOCTL_SERIAL_SET_XON);
X(IOCTL_SERIAL_WAIT_ON_MASK);
X(IOCTL_SERIAL_XOFF_COUNTER);
#undef X
default: { static char tmp[32]; sprintf(tmp, "IOCTL_SERIAL_%d\n", ioc); return tmp; }
}
}
static NTSTATUS get_baud_rate(int fd, SERIAL_BAUD_RATE* sbr)
{
struct termios port;
int speed;
if (tcgetattr(fd, &port) == -1)
{
ERR("tcgetattr error '%s'\n", strerror(errno));
return errno_to_status( errno );
}
speed = cfgetospeed(&port);
switch (speed)
{
case B0: sbr->BaudRate = 0; break;
case B50: sbr->BaudRate = 50; break;
case B75: sbr->BaudRate = 75; break;
case B110: sbr->BaudRate = 110; break;
case B134: sbr->BaudRate = 134; break;
case B150: sbr->BaudRate = 150; break;
case B200: sbr->BaudRate = 200; break;
case B300: sbr->BaudRate = 300; break;
case B600: sbr->BaudRate = 600; break;
case B1200: sbr->BaudRate = 1200; break;
case B1800: sbr->BaudRate = 1800; break;
case B2400: sbr->BaudRate = 2400; break;
case B4800: sbr->BaudRate = 4800; break;
case B9600: sbr->BaudRate = 9600; break;
case B19200: sbr->BaudRate = 19200; break;
case B38400: sbr->BaudRate = 38400; break;
#ifdef B57600
case B57600: sbr->BaudRate = 57600; break;
#endif
#ifdef B115200
case B115200: sbr->BaudRate = 115200; break;
#endif
#ifdef B230400
case B230400: sbr->BaudRate = 230400; break;
#endif
#ifdef B460800
case B460800: sbr->BaudRate = 460800; break;
#endif
#ifdef B500000
case B500000: sbr->BaudRate = 500000; break;
#endif
#ifdef B921600
case B921600: sbr->BaudRate = 921600; break;
#endif
#ifdef B1000000
case B1000000: sbr->BaudRate = 1000000; break;
#endif
#ifdef B1152000
case B1152000: sbr->BaudRate = 1152000; break;
#endif
#ifdef B1500000
case B1500000: sbr->BaudRate = 1500000; break;
#endif
#ifdef B2000000
case B2000000: sbr->BaudRate = 2000000; break;
#endif
#ifdef B2500000
case B2500000: sbr->BaudRate = 2500000; break;
#endif
#ifdef B3000000
case B3000000: sbr->BaudRate = 3000000; break;
#endif
#ifdef B3500000
case B3500000: sbr->BaudRate = 3500000; break;
#endif
#ifdef B4000000
case B4000000: sbr->BaudRate = 4000000; break;
#endif
default:
ERR("unknown speed %x\n", speed);
return STATUS_INVALID_PARAMETER;
}
return STATUS_SUCCESS;
}
static NTSTATUS get_hand_flow(int fd, SERIAL_HANDFLOW* shf)
{
int stat = 0;
struct termios port;
if (tcgetattr(fd, &port) == -1)
{
ERR("tcgetattr error '%s'\n", strerror(errno));
return errno_to_status( errno );
}
/* termios does not support DTR/DSR flow control */
shf->ControlHandShake = 0;
shf->FlowReplace = 0;
#ifdef TIOCMGET
if (ioctl(fd, TIOCMGET, &stat) == -1)
{
WARN("ioctl error '%s'\n", strerror(errno));
shf->ControlHandShake |= SERIAL_DTR_CONTROL;
shf->FlowReplace |= SERIAL_RTS_CONTROL;
}
#else
WARN("Setting DTR/RTS to enabled by default\n");
shf->ControlHandShake |= SERIAL_DTR_CONTROL;
shf->FlowReplace |= SERIAL_RTS_CONTROL;
#endif
#ifdef TIOCM_DTR
if (stat & TIOCM_DTR)
#endif
shf->ControlHandShake |= SERIAL_DTR_CONTROL;
#ifdef CRTSCTS
if (port.c_cflag & CRTSCTS)
{
shf->FlowReplace |= SERIAL_RTS_CONTROL;
shf->ControlHandShake |= SERIAL_CTS_HANDSHAKE;
}
else
#endif
{
#ifdef TIOCM_RTS
if (stat & TIOCM_RTS)
#endif
shf->FlowReplace |= SERIAL_RTS_CONTROL;
}
if (port.c_iflag & IXOFF)
shf->FlowReplace |= SERIAL_AUTO_RECEIVE;
if (port.c_iflag & IXON)
shf->FlowReplace |= SERIAL_AUTO_TRANSMIT;
shf->XonLimit = 10;
shf->XoffLimit = 10;
return STATUS_SUCCESS;
}
static NTSTATUS get_line_control(int fd, SERIAL_LINE_CONTROL* slc)
{
struct termios port;
if (tcgetattr(fd, &port) == -1)
{
ERR("tcgetattr error '%s'\n", strerror(errno));
return errno_to_status( errno );
}
#ifdef CMSPAR
switch (port.c_cflag & (PARENB | PARODD | CMSPAR))
#else
switch (port.c_cflag & (PARENB | PARODD))
#endif
{
case 0: slc->Parity = NOPARITY; break;
case PARENB: slc->Parity = EVENPARITY; break;
case PARENB|PARODD: slc->Parity = ODDPARITY; break;
#ifdef CMSPAR
case PARENB|PARODD|CMSPAR: slc->Parity = MARKPARITY; break;
case PARENB|CMSPAR: slc->Parity = SPACEPARITY; break;
#endif
}
switch (port.c_cflag & CSIZE)
{
case CS5: slc->WordLength = 5; break;
case CS6: slc->WordLength = 6; break;
case CS7: slc->WordLength = 7; break;
case CS8: slc->WordLength = 8; break;
default: ERR("unknown size %x\n", (UINT)(port.c_cflag & CSIZE));
}
if (port.c_cflag & CSTOPB)
{
if (slc->WordLength == 5)
slc->StopBits = ONE5STOPBITS;
else
slc->StopBits = TWOSTOPBITS;
}
else
slc->StopBits = ONESTOPBIT;
return STATUS_SUCCESS;
}
static NTSTATUS get_modem_status(int fd, DWORD* lpModemStat)
{
NTSTATUS status = STATUS_NOT_SUPPORTED;
int mstat;
*lpModemStat = 0;
#ifdef TIOCMGET
if (!ioctl(fd, TIOCMGET, &mstat))
{
#ifdef TIOCM_CTS
if (mstat & TIOCM_CTS) *lpModemStat |= MS_CTS_ON;
#endif
#ifdef TIOCM_DSR
if (mstat & TIOCM_DSR) *lpModemStat |= MS_DSR_ON;
#endif
#ifdef TIOCM_RNG
if (mstat & TIOCM_RNG) *lpModemStat |= MS_RING_ON;
#endif
#ifdef TIOCM_CAR
/* FIXME: Not really sure about RLSD UB 990810 */
if (mstat & TIOCM_CAR) *lpModemStat |= MS_RLSD_ON;
#endif
TRACE("%04x -> %s%s%s%s\n", mstat,
(*lpModemStat & MS_RLSD_ON) ? "MS_RLSD_ON " : "",
(*lpModemStat & MS_RING_ON) ? "MS_RING_ON " : "",
(*lpModemStat & MS_DSR_ON) ? "MS_DSR_ON " : "",
(*lpModemStat & MS_CTS_ON) ? "MS_CTS_ON " : "");
return STATUS_SUCCESS;
}
WARN("TIOCMGET err %s\n", strerror(errno));
status = errno_to_status( errno );
#endif
return status;
}
static NTSTATUS get_properties(int fd, SERIAL_COMMPROP *prop)
{
/* FIXME: get actual properties from the device */
memset( prop, 0, sizeof(*prop) );
prop->PacketLength = 1;
prop->PacketVersion = 1;
prop->ServiceMask = SP_SERIALCOMM;
prop->MaxTxQueue = 4096;
prop->MaxRxQueue = 4096;
prop->MaxBaud = BAUD_115200;
prop->ProvSubType = PST_RS232;
prop->ProvCapabilities = PCF_DTRDSR | PCF_PARITY_CHECK | PCF_RTSCTS | PCF_TOTALTIMEOUTS | PCF_INTTIMEOUTS;
prop->SettableParams = SP_BAUD | SP_DATABITS | SP_HANDSHAKING |
SP_PARITY | SP_PARITY_CHECK | SP_STOPBITS ;
prop->SettableBaud = BAUD_075 | BAUD_110 | BAUD_134_5 | BAUD_150 |
BAUD_300 | BAUD_600 | BAUD_1200 | BAUD_1800 | BAUD_2400 | BAUD_4800 |
BAUD_9600 | BAUD_19200 | BAUD_38400 | BAUD_57600 | BAUD_115200 ;
prop->SettableData = DATABITS_5 | DATABITS_6 | DATABITS_7 | DATABITS_8 ;
prop->SettableStopParity = STOPBITS_10 | STOPBITS_15 | STOPBITS_20 |
PARITY_NONE | PARITY_ODD |PARITY_EVEN | PARITY_MARK | PARITY_SPACE;
prop->CurrentTxQueue = prop->MaxTxQueue;
prop->CurrentRxQueue = prop->MaxRxQueue;
return STATUS_SUCCESS;
}
static NTSTATUS get_special_chars(int fd, SERIAL_CHARS* sc)
{
struct termios port;
if (tcgetattr(fd, &port) == -1)
{
ERR("tcgetattr error '%s'\n", strerror(errno));
return errno_to_status( errno );
}
sc->EofChar = port.c_cc[VEOF];
sc->ErrorChar = 0xFF;
sc->BreakChar = 0; /* FIXME */
sc->EventChar = 0; /* FIXME */
sc->XonChar = port.c_cc[VSTART];
sc->XoffChar = port.c_cc[VSTOP];
return STATUS_SUCCESS;
}
static NTSTATUS get_status(int fd, SERIAL_STATUS* ss)
{
NTSTATUS status = STATUS_SUCCESS;
ss->Errors = 0;
ss->HoldReasons = 0;
ss->EofReceived = FALSE;
ss->WaitForImmediate = FALSE;
#ifdef TIOCOUTQ
if (ioctl(fd, TIOCOUTQ, &ss->AmountInOutQueue) == -1)
{
WARN("ioctl returned error\n");
status = errno_to_status( errno );
}
#else
ss->AmountInOutQueue = 0; /* FIXME: find a different way to find out */
#endif
#ifdef TIOCINQ
if (ioctl(fd, TIOCINQ, &ss->AmountInInQueue))
{
WARN("ioctl returned error\n");
status = errno_to_status( errno );
}
#else
ss->AmountInInQueue = 0; /* FIXME: find a different way to find out */
#endif
return status;
}
static void stop_waiting( HANDLE handle )
{
NTSTATUS status;
SERVER_START_REQ( set_serial_info )
{
req->handle = wine_server_obj_handle( handle );
req->flags = SERIALINFO_PENDING_WAIT;
if ((status = wine_server_call( req )))
ERR("failed to clear waiting state: %#x\n", status);
}
SERVER_END_REQ;
}
static NTSTATUS get_wait_mask(HANDLE hDevice, DWORD *mask, DWORD *cookie, DWORD *pending_write, BOOL start_wait)
{
NTSTATUS status;
SERVER_START_REQ( get_serial_info )
{
req->handle = wine_server_obj_handle( hDevice );
req->flags = pending_write ? SERIALINFO_PENDING_WRITE : 0;
if (start_wait) req->flags |= SERIALINFO_PENDING_WAIT;
if (!(status = wine_server_call( req )))
{
*mask = reply->eventmask;
if (cookie) *cookie = reply->cookie;
if (pending_write) *pending_write = reply->pending_write;
}
}
SERVER_END_REQ;
return status;
}
static NTSTATUS purge(int fd, DWORD flags)
{
/*
** not exactly sure how these are different
** Perhaps if we had our own internal queues, one flushes them
** and the other flushes the kernel's buffers.
*/
if (flags & PURGE_TXABORT) tcflush(fd, TCOFLUSH);
if (flags & PURGE_RXABORT) tcflush(fd, TCIFLUSH);
if (flags & PURGE_TXCLEAR) tcflush(fd, TCOFLUSH);
if (flags & PURGE_RXCLEAR) tcflush(fd, TCIFLUSH);
return STATUS_SUCCESS;
}
static NTSTATUS set_baud_rate(int fd, const SERIAL_BAUD_RATE* sbr)
{
struct termios port;
if (tcgetattr(fd, &port) == -1)
{
ERR("tcgetattr error '%s'\n", strerror(errno));
return errno_to_status( errno );
}
switch (sbr->BaudRate)
{
case 0: cfsetospeed( &port, B0 ); break;
case 50: cfsetospeed( &port, B50 ); break;
case 75: cfsetospeed( &port, B75 ); break;
case 110:
case CBR_110: cfsetospeed( &port, B110 ); break;
case 134: cfsetospeed( &port, B134 ); break;
case 150: cfsetospeed( &port, B150 ); break;
case 200: cfsetospeed( &port, B200 ); break;
case 300:
case CBR_300: cfsetospeed( &port, B300 ); break;
case 600:
case CBR_600: cfsetospeed( &port, B600 ); break;
case 1200:
case CBR_1200: cfsetospeed( &port, B1200 ); break;
case 1800: cfsetospeed( &port, B1800 ); break;
case 2400:
case CBR_2400: cfsetospeed( &port, B2400 ); break;
case 4800:
case CBR_4800: cfsetospeed( &port, B4800 ); break;
case 9600:
case CBR_9600: cfsetospeed( &port, B9600 ); break;
case 19200:
case CBR_19200: cfsetospeed( &port, B19200 ); break;
case 38400:
case CBR_38400: cfsetospeed( &port, B38400 ); break;
#ifdef B57600
case 57600: cfsetospeed( &port, B57600 ); break;
#endif
#ifdef B115200
case 115200: cfsetospeed( &port, B115200 ); break;
#endif
#ifdef B230400
case 230400: cfsetospeed( &port, B230400 ); break;
#endif
#ifdef B460800
case 460800: cfsetospeed( &port, B460800 ); break;
#endif
#ifdef B500000
case 500000: cfsetospeed( &port, B500000 ); break;
#endif
#ifdef B921600
case 921600: cfsetospeed( &port, B921600 ); break;
#endif
#ifdef B1000000
case 1000000: cfsetospeed( &port, B1000000 ); break;
#endif
#ifdef B1152000
case 1152000: cfsetospeed( &port, B1152000 ); break;
#endif
#ifdef B1500000
case 1500000: cfsetospeed( &port, B1500000 ); break;
#endif
#ifdef B2000000
case 2000000: cfsetospeed( &port, B2000000 ); break;
#endif
#ifdef B2500000
case 2500000: cfsetospeed( &port, B2500000 ); break;
#endif
#ifdef B3000000
case 3000000: cfsetospeed( &port, B3000000 ); break;
#endif
#ifdef B3500000
case 3500000: cfsetospeed( &port, B3500000 ); break;
#endif
#ifdef B4000000
case 4000000: cfsetospeed( &port, B4000000 ); break;
#endif
default:
#if defined (HAVE_LINUX_SERIAL_H) && defined (TIOCSSERIAL)
{
struct serial_struct nuts;
int arby;
ioctl(fd, TIOCGSERIAL, &nuts);
nuts.custom_divisor = nuts.baud_base / sbr->BaudRate;
if (!(nuts.custom_divisor)) nuts.custom_divisor = 1;
arby = nuts.baud_base / nuts.custom_divisor;
nuts.flags &= ~ASYNC_SPD_MASK;
nuts.flags |= ASYNC_SPD_CUST;
WARN("You (or a program acting at your behest) have specified\n"
"a non-standard baud rate %d. Wine will set the rate to %d,\n"
"which is as close as we can get by our present understanding of your\n"
"hardware. I hope you know what you are doing. Any disruption Wine\n"
"has caused to your linux system can be undone with setserial\n"
"(see man setserial). If you have incapacitated a Hayes type modem,\n"
"reset it and it will probably recover.\n", sbr->BaudRate, arby);
ioctl(fd, TIOCSSERIAL, &nuts);
cfsetospeed( &port, B38400 );
}
break;
#else /* Don't have linux/serial.h or lack TIOCSSERIAL */
ERR("baudrate %d\n", sbr->BaudRate);
return STATUS_NOT_SUPPORTED;
#endif /* Don't have linux/serial.h or lack TIOCSSERIAL */
}
cfsetispeed( &port, cfgetospeed(&port) );
if (tcsetattr(fd, TCSANOW, &port) == -1)
{
ERR("tcsetattr error '%s'\n", strerror(errno));
return errno_to_status( errno );
}
return STATUS_SUCCESS;
}
static int whack_modem(int fd, unsigned int andy, unsigned int orrie)
{
#ifdef TIOCMGET
unsigned int mstat, okay;
okay = ioctl(fd, TIOCMGET, &mstat);
if (okay) return okay;
if (andy) mstat &= andy;
mstat |= orrie;
return ioctl(fd, TIOCMSET, &mstat);
#else
return 0;
#endif
}
static NTSTATUS set_handflow(int fd, const SERIAL_HANDFLOW* shf)
{
struct termios port;
if ((shf->FlowReplace & (SERIAL_RTS_CONTROL | SERIAL_RTS_HANDSHAKE)) ==
(SERIAL_RTS_CONTROL | SERIAL_RTS_HANDSHAKE))
return STATUS_NOT_SUPPORTED;
if (tcgetattr(fd, &port) == -1)
{
ERR("tcgetattr error '%s'\n", strerror(errno));
return errno_to_status( errno );
}
#ifdef CRTSCTS
if ((shf->ControlHandShake & SERIAL_CTS_HANDSHAKE) ||
(shf->FlowReplace & SERIAL_RTS_HANDSHAKE))
{
port.c_cflag |= CRTSCTS;
TRACE("CRTSCTS\n");
}
else
port.c_cflag &= ~CRTSCTS;
#endif
#ifdef TIOCM_DTR
if (shf->ControlHandShake & SERIAL_DTR_HANDSHAKE)
{
WARN("DSR/DTR flow control not supported\n");
} else if (!(shf->ControlHandShake & SERIAL_DTR_CONTROL))
whack_modem(fd, ~TIOCM_DTR, 0);
else
whack_modem(fd, 0, TIOCM_DTR);
#endif
#ifdef TIOCM_RTS
if (!(shf->ControlHandShake & SERIAL_CTS_HANDSHAKE))
{
if ((shf->FlowReplace & (SERIAL_RTS_CONTROL|SERIAL_RTS_HANDSHAKE)) == 0)
whack_modem(fd, ~TIOCM_RTS, 0);
else
whack_modem(fd, 0, TIOCM_RTS);
}
#endif
if (shf->FlowReplace & SERIAL_AUTO_RECEIVE)
port.c_iflag |= IXOFF;
else
port.c_iflag &= ~IXOFF;
if (shf->FlowReplace & SERIAL_AUTO_TRANSMIT)
port.c_iflag |= IXON;
else
port.c_iflag &= ~IXON;
if (tcsetattr(fd, TCSANOW, &port) == -1)
{
ERR("tcsetattr error '%s'\n", strerror(errno));
return errno_to_status( errno );
}
return STATUS_SUCCESS;
}
static NTSTATUS set_line_control(int fd, const SERIAL_LINE_CONTROL* slc)
{
struct termios port;
unsigned bytesize, stopbits;
if (tcgetattr(fd, &port) == -1)
{
ERR("tcgetattr error '%s'\n", strerror(errno));
return errno_to_status( errno );
}
#ifdef IMAXBEL
port.c_iflag &= ~(ISTRIP|BRKINT|IGNCR|ICRNL|INLCR|PARMRK|IMAXBEL);
#else
port.c_iflag &= ~(ISTRIP|BRKINT|IGNCR|ICRNL|INLCR|PARMRK);
#endif
port.c_iflag |= IGNBRK | INPCK;
port.c_oflag &= ~(OPOST);
port.c_cflag &= ~(HUPCL);
port.c_cflag |= CLOCAL | CREAD;
/*
* on FreeBSD, turning off ICANON does not disable IEXTEN,
* so we must turn it off explicitly. No harm done on Linux.
*/
port.c_lflag &= ~(ICANON|ECHO|ISIG|IEXTEN);
port.c_lflag |= NOFLSH;
bytesize = slc->WordLength;
stopbits = slc->StopBits;
#ifdef CMSPAR
port.c_cflag &= ~(PARENB | PARODD | CMSPAR);
#else
port.c_cflag &= ~(PARENB | PARODD);
#endif
/* make sure that reads don't block */
port.c_cc[VMIN] = 0;
port.c_cc[VTIME] = 0;
switch (slc->Parity)
{
case NOPARITY: port.c_iflag &= ~INPCK; break;
case ODDPARITY: port.c_cflag |= PARENB | PARODD; break;
case EVENPARITY: port.c_cflag |= PARENB; break;
#ifdef CMSPAR
/* Linux defines mark/space (stick) parity */
case MARKPARITY: port.c_cflag |= PARENB | PARODD | CMSPAR; break;
case SPACEPARITY: port.c_cflag |= PARENB | CMSPAR; break;
#else
/* try the POSIX way */
case MARKPARITY:
if (slc->StopBits == ONESTOPBIT)
{
stopbits = TWOSTOPBITS;
port.c_iflag &= ~INPCK;
}
else
{
FIXME("Cannot set MARK Parity\n");
return STATUS_NOT_SUPPORTED;
}
break;
case SPACEPARITY:
if (slc->WordLength < 8)
{
bytesize +=1;
port.c_iflag &= ~INPCK;
}
else
{
FIXME("Cannot set SPACE Parity\n");
return STATUS_NOT_SUPPORTED;
}
break;
#endif
default:
FIXME("Parity %d is not supported\n", slc->Parity);
return STATUS_NOT_SUPPORTED;
}
port.c_cflag &= ~CSIZE;
switch (bytesize)
{
case 5: port.c_cflag |= CS5; break;
case 6: port.c_cflag |= CS6; break;
case 7: port.c_cflag |= CS7; break;
case 8: port.c_cflag |= CS8; break;
default:
FIXME("ByteSize %d is not supported\n", bytesize);
return STATUS_NOT_SUPPORTED;
}
switch (stopbits)
{
case ONESTOPBIT: port.c_cflag &= ~CSTOPB; break;
case ONE5STOPBITS: /* will be selected if bytesize is 5 */
case TWOSTOPBITS: port.c_cflag |= CSTOPB; break;
default:
FIXME("StopBits %d is not supported\n", stopbits);
return STATUS_NOT_SUPPORTED;
}
/* otherwise it hangs with pending input*/
if (tcsetattr(fd, TCSANOW, &port) == -1)
{
ERR("tcsetattr error '%s'\n", strerror(errno));
return errno_to_status( errno );
}
return STATUS_SUCCESS;
}
static NTSTATUS set_queue_size(int fd, const SERIAL_QUEUE_SIZE* sqs)
{
FIXME("insize %d outsize %d unimplemented stub\n", sqs->InSize, sqs->OutSize);
return STATUS_SUCCESS;
}
static NTSTATUS set_special_chars(int fd, const SERIAL_CHARS* sc)
{
struct termios port;
if (tcgetattr(fd, &port) == -1)
{
ERR("tcgetattr error '%s'\n", strerror(errno));
return errno_to_status( errno );
}
port.c_cc[VEOF ] = sc->EofChar;
/* FIXME: sc->ErrorChar is not supported */
/* FIXME: sc->BreakChar is not supported */
/* FIXME: sc->EventChar is not supported */
port.c_cc[VSTART] = sc->XonChar;
port.c_cc[VSTOP ] = sc->XoffChar;
if (tcsetattr(fd, TCSANOW, &port) == -1)
{
ERR("tcsetattr error '%s'\n", strerror(errno));
return errno_to_status( errno );
}
return STATUS_SUCCESS;
}
/*
* does not change IXOFF but simulates that IXOFF has been received:
*/
static NTSTATUS set_XOff(int fd)
{
if (tcflow(fd, TCOOFF))
{
return errno_to_status( errno );
}
return STATUS_SUCCESS;
}
/*
* does not change IXON but simulates that IXON has been received:
*/
static NTSTATUS set_XOn(int fd)
{
if (tcflow(fd, TCOON))
{
return errno_to_status( errno );
}
return STATUS_SUCCESS;
}
/* serial_irq_info
* local structure holding the irq values we need for WaitCommEvent()
*
* Stripped down from struct serial_icounter_struct, which may not be available on some systems
* As the modem line interrupts (cts, dsr, rng, dcd) only get updated with TIOCMIWAIT active,
* no need to carry them in the internal structure
*
*/
typedef struct serial_irq_info
{
int rx, tx, frame, overrun, parity, brk, buf_overrun, temt;
}serial_irq_info;
/***********************************************************************
* Data needed by the thread polling for the changing CommEvent
*/
typedef struct async_commio
{
HANDLE hDevice;
DWORD* events;
IO_STATUS_BLOCK* iosb;
HANDLE hEvent;
DWORD evtmask;
DWORD cookie;
DWORD mstat;
DWORD pending_write;
serial_irq_info irq_info;
} async_commio;
/***********************************************************************
* Get extended interrupt count info, needed for wait_on
*/
static NTSTATUS get_irq_info(int fd, serial_irq_info *irq_info)
{
int out;
#if defined (HAVE_LINUX_SERIAL_H) && defined (TIOCGICOUNT)
struct serial_icounter_struct einfo;
if (!ioctl(fd, TIOCGICOUNT, &einfo))
{
irq_info->rx = einfo.rx;
irq_info->tx = einfo.tx;
irq_info->frame = einfo.frame;
irq_info->overrun = einfo.overrun;
irq_info->parity = einfo.parity;
irq_info->brk = einfo.brk;
irq_info->buf_overrun = einfo.buf_overrun;
}
else
{
TRACE("TIOCGICOUNT err %s\n", strerror(errno));
memset(irq_info,0, sizeof(serial_irq_info));
}
#else
memset(irq_info,0, sizeof(serial_irq_info));
#endif
irq_info->temt = 0;
/* Generate a single TX_TXEMPTY event when the TX Buffer turns empty*/
#ifdef TIOCSERGETLSR /* prefer to log the state TIOCSERGETLSR */
if (!ioctl(fd, TIOCSERGETLSR, &out))
{
irq_info->temt = (out & TIOCSER_TEMT) != 0;
return STATUS_SUCCESS;
}
TRACE("TIOCSERGETLSR err %s\n", strerror(errno));
#endif
#ifdef TIOCOUTQ /* otherwise we log when the out queue gets empty */
if (!ioctl(fd, TIOCOUTQ, &out))
{
irq_info->temt = out == 0;
return STATUS_SUCCESS;
}
TRACE("TIOCOUTQ err %s\n", strerror(errno));
return errno_to_status( errno );
#endif
return STATUS_SUCCESS;
}
static DWORD check_events(int fd, DWORD mask,
const serial_irq_info *new,
const serial_irq_info *old,
DWORD new_mstat, DWORD old_mstat, DWORD pending_write)
{
DWORD ret = 0, queue;
TRACE("mask 0x%08x\n", mask);
TRACE("old->rx 0x%08x vs. new->rx 0x%08x\n", old->rx, new->rx);
TRACE("old->tx 0x%08x vs. new->tx 0x%08x\n", old->tx, new->tx);
TRACE("old->frame 0x%08x vs. new->frame 0x%08x\n", old->frame, new->frame);
TRACE("old->overrun 0x%08x vs. new->overrun 0x%08x\n", old->overrun, new->overrun);
TRACE("old->parity 0x%08x vs. new->parity 0x%08x\n", old->parity, new->parity);
TRACE("old->brk 0x%08x vs. new->brk 0x%08x\n", old->brk, new->brk);
TRACE("old->buf_overrun 0x%08x vs. new->buf_overrun 0x%08x\n", old->buf_overrun, new->buf_overrun);
TRACE("old->temt 0x%08x vs. new->temt 0x%08x\n", old->temt, new->temt);
if (old->brk != new->brk) ret |= EV_BREAK;
if ((old_mstat & MS_CTS_ON ) != (new_mstat & MS_CTS_ON )) ret |= EV_CTS;
if ((old_mstat & MS_DSR_ON ) != (new_mstat & MS_DSR_ON )) ret |= EV_DSR;
if ((old_mstat & MS_RING_ON) != (new_mstat & MS_RING_ON)) ret |= EV_RING;
if ((old_mstat & MS_RLSD_ON) != (new_mstat & MS_RLSD_ON)) ret |= EV_RLSD;
if (old->frame != new->frame || old->overrun != new->overrun || old->parity != new->parity) ret |= EV_ERR;
if (mask & EV_RXCHAR)
{
queue = 0;
#ifdef TIOCINQ
if (ioctl(fd, TIOCINQ, &queue))
WARN("TIOCINQ returned error\n");
#endif
if (queue)
ret |= EV_RXCHAR;
}
if (mask & EV_TXEMPTY)
{
if ((!old->temt || pending_write) && new->temt)
ret |= EV_TXEMPTY;
}
return ret & mask;
}
/***********************************************************************
* wait_for_event (INTERNAL)
*
* We need to poll for what is interesting
* TIOCMIWAIT only checks modem status line and may not be aborted by a changing mask
*
*/
static void CALLBACK wait_for_event(LPVOID arg)
{
async_commio *commio = arg;
int fd, needs_close;
if (!server_get_unix_fd( commio->hDevice, FILE_READ_DATA | FILE_WRITE_DATA, &fd, &needs_close, NULL, NULL ))
{
serial_irq_info new_irq_info;
DWORD new_mstat, dummy, cookie;
LARGE_INTEGER time;
TRACE("device=%p fd=0x%08x mask=0x%08x buffer=%p event=%p irq_info=%p\n",
commio->hDevice, fd, commio->evtmask, commio->events, commio->hEvent, &commio->irq_info);
time.QuadPart = (ULONGLONG)10000;
time.QuadPart = -time.QuadPart;
for (;;)
{
/*
* TIOCMIWAIT is not adequate
*
* FIXME:
* We don't handle the EV_RXFLAG (the eventchar)
*/
NtDelayExecution(FALSE, &time);
get_irq_info(fd, &new_irq_info);
if (get_modem_status(fd, &new_mstat))
{
TRACE("get_modem_status failed\n");
*commio->events = 0;
break;
}
*commio->events = check_events(fd, commio->evtmask,
&new_irq_info, &commio->irq_info,
new_mstat, commio->mstat, commio->pending_write);
if (*commio->events) break;
get_wait_mask(commio->hDevice, &dummy, &cookie, (commio->evtmask & EV_TXEMPTY) ? &commio->pending_write : NULL, FALSE);
if (commio->cookie != cookie)
{
*commio->events = 0;
break;
}
}
if (needs_close) close( fd );
}
if (commio->iosb)
{
if (*commio->events)
{
commio->iosb->u.Status = STATUS_SUCCESS;
commio->iosb->Information = sizeof(DWORD);
}
else
commio->iosb->u.Status = STATUS_CANCELLED;
}
stop_waiting(commio->hDevice);
if (commio->hEvent) NtSetEvent(commio->hEvent, NULL);
free( commio );
NtTerminateThread( GetCurrentThread(), 0 );
}
static NTSTATUS wait_on(HANDLE hDevice, int fd, HANDLE hEvent, PIO_STATUS_BLOCK piosb, DWORD* events)
{
async_commio* commio;
NTSTATUS status;
HANDLE handle;
if ((status = NtResetEvent(hEvent, NULL)))
return status;
commio = malloc( sizeof(async_commio) );
if (!commio) return STATUS_NO_MEMORY;
commio->hDevice = hDevice;
commio->events = events;
commio->iosb = piosb;
commio->hEvent = hEvent;
commio->pending_write = 0;
status = get_wait_mask(commio->hDevice, &commio->evtmask, &commio->cookie, (commio->evtmask & EV_TXEMPTY) ? &commio->pending_write : NULL, TRUE);
if (status)
{
free( commio );
return status;
}
/* We may never return, if some capabilities miss
* Return error in that case
*/
#if !defined(TIOCINQ)
if (commio->evtmask & EV_RXCHAR)
goto error_caps;
#endif
#if !(defined(TIOCSERGETLSR) && defined(TIOCSER_TEMT)) || !defined(TIOCINQ)
if (commio->evtmask & EV_TXEMPTY)
goto error_caps;
#endif
#if !defined(TIOCMGET)
if (commio->evtmask & (EV_CTS | EV_DSR| EV_RING| EV_RLSD))
goto error_caps;
#endif
#if !defined(TIOCM_CTS)
if (commio->evtmask & EV_CTS)
goto error_caps;
#endif
#if !defined(TIOCM_DSR)
if (commio->evtmask & EV_DSR)
goto error_caps;
#endif
#if !defined(TIOCM_RNG)
if (commio->evtmask & EV_RING)
goto error_caps;
#endif
#if !defined(TIOCM_CAR)
if (commio->evtmask & EV_RLSD)
goto error_caps;
#endif
if (commio->evtmask & EV_RXFLAG)
FIXME("EV_RXFLAG not handled\n");
if ((status = get_irq_info(fd, &commio->irq_info)) &&
(commio->evtmask & (EV_BREAK | EV_ERR)))
goto out_now;
if ((status = get_modem_status(fd, &commio->mstat)) &&
(commio->evtmask & (EV_CTS | EV_DSR| EV_RING| EV_RLSD)))
goto out_now;
/* We might have received something or the TX buffer is delivered */
*events = check_events(fd, commio->evtmask,
&commio->irq_info, &commio->irq_info,
commio->mstat, commio->mstat, commio->pending_write);
if (*events)
{
status = STATUS_SUCCESS;
goto out_now;
}
/* create the worker thread for the task */
/* FIXME: should use async I/O instead */
status = NtCreateThreadEx( &handle, THREAD_ALL_ACCESS, NULL, GetCurrentProcess(),
wait_for_event, commio, 0, 0, 0, 0, NULL );
if (status != STATUS_SUCCESS) goto out_now;
NtClose( handle );
return STATUS_PENDING;
#if !defined(TIOCINQ) || (!(defined(TIOCSERGETLSR) && defined(TIOCSER_TEMT)) || !defined(TIOCINQ)) || !defined(TIOCMGET) || !defined(TIOCM_CTS) ||!defined(TIOCM_DSR) || !defined(TIOCM_RNG) || !defined(TIOCM_CAR)
error_caps:
FIXME("Returning error because of missing capabilities\n");
status = STATUS_INVALID_PARAMETER;
#endif
out_now:
stop_waiting(commio->hDevice);
free( commio );
return status;
}
static NTSTATUS xmit_immediate(HANDLE hDevice, int fd, const char* ptr)
{
/* FIXME: not perfect as it should bypass the in-queue */
WARN("(%p,'%c') not perfect!\n", hDevice, *ptr);
if (write(fd, ptr, 1) != 1)
return errno_to_status( errno );
return STATUS_SUCCESS;
}
static NTSTATUS io_control( HANDLE device, HANDLE event, PIO_APC_ROUTINE apc, void *apc_user,
IO_STATUS_BLOCK *io, ULONG code, void *in_buffer,
ULONG in_size, void *out_buffer, ULONG out_size )
{
DWORD sz = 0, access = FILE_READ_DATA;
NTSTATUS status = STATUS_SUCCESS;
int fd = -1, needs_close = 0;
enum server_fd_type type;
TRACE("%p %s %p %d %p %d %p\n",
device, iocode2str(code), in_buffer, in_size, out_buffer, out_size, io);
switch (code)
{
case IOCTL_SERIAL_GET_TIMEOUTS:
case IOCTL_SERIAL_SET_TIMEOUTS:
case IOCTL_SERIAL_GET_WAIT_MASK:
case IOCTL_SERIAL_SET_WAIT_MASK:
/* these are handled on the server side */
return STATUS_NOT_SUPPORTED;
}
io->Information = 0;
if ((status = server_get_unix_fd( device, access, &fd, &needs_close, &type, NULL ))) goto error;
if (type != FD_TYPE_SERIAL)
{
if (needs_close) close( fd );
status = STATUS_OBJECT_TYPE_MISMATCH;
goto error;
}
switch (code)
{
case IOCTL_SERIAL_CLR_DTR:
#ifdef TIOCM_DTR
if (whack_modem(fd, ~TIOCM_DTR, 0) == -1) status = errno_to_status( errno );
#else
status = STATUS_NOT_SUPPORTED;
#endif
break;
case IOCTL_SERIAL_CLR_RTS:
#ifdef TIOCM_RTS
if (whack_modem(fd, ~TIOCM_RTS, 0) == -1) status = errno_to_status( errno );
#else
status = STATUS_NOT_SUPPORTED;
#endif
break;
case IOCTL_SERIAL_GET_BAUD_RATE:
if (out_buffer && out_size == sizeof(SERIAL_BAUD_RATE))
{
if (!(status = get_baud_rate(fd, out_buffer)))
sz = sizeof(SERIAL_BAUD_RATE);
}
else
status = STATUS_INVALID_PARAMETER;
break;
case IOCTL_SERIAL_GET_CHARS:
if (out_buffer && out_size == sizeof(SERIAL_CHARS))
{
if (!(status = get_special_chars(fd, out_buffer)))
sz = sizeof(SERIAL_CHARS);
}
else
status = STATUS_INVALID_PARAMETER;
break;
case IOCTL_SERIAL_GET_COMMSTATUS:
if (out_buffer && out_size == sizeof(SERIAL_STATUS))
{
if (!(status = get_status(fd, out_buffer)))
sz = sizeof(SERIAL_STATUS);
}
else status = STATUS_INVALID_PARAMETER;
break;
case IOCTL_SERIAL_GET_HANDFLOW:
if (out_buffer && out_size == sizeof(SERIAL_HANDFLOW))
{
if (!(status = get_hand_flow(fd, out_buffer)))
sz = sizeof(SERIAL_HANDFLOW);
}
else
status = STATUS_INVALID_PARAMETER;
break;
case IOCTL_SERIAL_GET_LINE_CONTROL:
if (out_buffer && out_size == sizeof(SERIAL_LINE_CONTROL))
{
if (!(status = get_line_control(fd, out_buffer)))
sz = sizeof(SERIAL_LINE_CONTROL);
}
else
status = STATUS_INVALID_PARAMETER;
break;
case IOCTL_SERIAL_GET_MODEMSTATUS:
if (out_buffer && out_size == sizeof(DWORD))
{
if (!(status = get_modem_status(fd, out_buffer)))
sz = sizeof(DWORD);
}
else status = STATUS_INVALID_PARAMETER;
break;
case IOCTL_SERIAL_GET_PROPERTIES:
if (out_buffer && out_size == sizeof(SERIAL_COMMPROP))
{
if (!(status = get_properties(fd, out_buffer)))
sz = sizeof(SERIAL_COMMPROP);
}
else status = STATUS_INVALID_PARAMETER;
break;
case IOCTL_SERIAL_IMMEDIATE_CHAR:
if (in_buffer && in_size == sizeof(CHAR))
status = xmit_immediate(device, fd, in_buffer);
else
status = STATUS_INVALID_PARAMETER;
break;
case IOCTL_SERIAL_PURGE:
if (in_buffer && in_size == sizeof(DWORD))
status = purge(fd, *(DWORD*)in_buffer);
else
status = STATUS_INVALID_PARAMETER;
break;
case IOCTL_SERIAL_RESET_DEVICE:
FIXME("Unsupported\n");
break;
case IOCTL_SERIAL_SET_BAUD_RATE:
if (in_buffer && in_size == sizeof(SERIAL_BAUD_RATE))
status = set_baud_rate(fd, in_buffer);
else
status = STATUS_INVALID_PARAMETER;
break;
case IOCTL_SERIAL_SET_BREAK_OFF:
#if defined(TIOCSBRK) && defined(TIOCCBRK) /* check if available for compilation */
if (ioctl(fd, TIOCCBRK, 0) == -1)
{
TRACE("ioctl failed\n");
status = errno_to_status( errno );
}
#else
FIXME("ioctl not available\n");
status = STATUS_NOT_SUPPORTED;
#endif
break;
case IOCTL_SERIAL_SET_BREAK_ON:
#if defined(TIOCSBRK) && defined(TIOCCBRK) /* check if available for compilation */
if (ioctl(fd, TIOCSBRK, 0) == -1)
{
TRACE("ioctl failed\n");
status = errno_to_status( errno );
}
#else
FIXME("ioctl not available\n");
status = STATUS_NOT_SUPPORTED;
#endif
break;
case IOCTL_SERIAL_SET_CHARS:
if (in_buffer && in_size == sizeof(SERIAL_CHARS))
status = set_special_chars(fd, in_buffer);
else
status = STATUS_INVALID_PARAMETER;
break;
case IOCTL_SERIAL_SET_DTR:
#ifdef TIOCM_DTR
if (whack_modem(fd, 0, TIOCM_DTR) == -1) status = errno_to_status( errno );
#else
status = STATUS_NOT_SUPPORTED;
#endif
break;
case IOCTL_SERIAL_SET_HANDFLOW:
if (in_buffer && in_size == sizeof(SERIAL_HANDFLOW))
status = set_handflow(fd, in_buffer);
else
status = STATUS_INVALID_PARAMETER;
break;
case IOCTL_SERIAL_SET_LINE_CONTROL:
if (in_buffer && in_size == sizeof(SERIAL_LINE_CONTROL))
status = set_line_control(fd, in_buffer);
else
status = STATUS_INVALID_PARAMETER;
break;
case IOCTL_SERIAL_SET_QUEUE_SIZE:
if (in_buffer && in_size == sizeof(SERIAL_QUEUE_SIZE))
status = set_queue_size(fd, in_buffer);
else
status = STATUS_INVALID_PARAMETER;
break;
case IOCTL_SERIAL_SET_RTS:
#ifdef TIOCM_RTS
if (whack_modem(fd, 0, TIOCM_RTS) == -1) status = errno_to_status( errno );
#else
status = STATUS_NOT_SUPPORTED;
#endif
break;
case IOCTL_SERIAL_SET_XOFF:
status = set_XOff(fd);
break;
case IOCTL_SERIAL_SET_XON:
status = set_XOn(fd);
break;
case IOCTL_SERIAL_WAIT_ON_MASK:
if (out_buffer && out_size == sizeof(DWORD))
{
if (!(status = wait_on(device, fd, event, io, out_buffer)))
sz = sizeof(DWORD);
}
else
status = STATUS_INVALID_PARAMETER;
break;
default:
FIXME("Unsupported IOCTL %x (type=%x access=%x func=%x meth=%x)\n",
code, code >> 16, (code >> 14) & 3, (code >> 2) & 0xFFF, code & 3);
sz = 0;
status = STATUS_INVALID_PARAMETER;
break;
}
if (needs_close) close( fd );
error:
io->u.Status = status;
io->Information = sz;
if (event && status != STATUS_PENDING) NtSetEvent(event, NULL);
return status;
}
/******************************************************************
* serial_DeviceIoControl
*/
NTSTATUS serial_DeviceIoControl( HANDLE device, HANDLE event, PIO_APC_ROUTINE apc, void *apc_user,
IO_STATUS_BLOCK *io, ULONG code, void *in_buffer,
ULONG in_size, void *out_buffer, ULONG out_size )
{
NTSTATUS status;
if (code == IOCTL_SERIAL_WAIT_ON_MASK)
{
HANDLE hev = event;
/* this is an ioctl we implement in a non blocking way if event is not null
* so we have to explicitly wait if no event is provided
*/
if (!hev)
{
OBJECT_ATTRIBUTES attr;
attr.Length = sizeof(attr);
attr.RootDirectory = 0;
attr.ObjectName = NULL;
attr.Attributes = OBJ_CASE_INSENSITIVE | OBJ_OPENIF;
attr.SecurityDescriptor = NULL;
attr.SecurityQualityOfService = NULL;
status = NtCreateEvent(&hev, EVENT_ALL_ACCESS, &attr, SynchronizationEvent, FALSE);
if (status) return status;
}
status = io_control( device, hev, apc, apc_user, io, code,
in_buffer, in_size, out_buffer, out_size );
if (hev != event)
{
if (status == STATUS_PENDING)
{
NtWaitForSingleObject(hev, FALSE, NULL);
status = STATUS_SUCCESS;
}
NtClose(hev);
}
}
else status = io_control( device, event, apc, apc_user, io, code,
in_buffer, in_size, out_buffer, out_size );
return status;
}
NTSTATUS serial_FlushBuffersFile( int fd )
{
#ifdef HAVE_TCDRAIN
while (tcdrain( fd ) == -1)
{
if (errno != EINTR) return errno_to_status( errno );
}
return STATUS_SUCCESS;
#elif defined(TIOCDRAIN)
while (ioctl( fd, TIOCDRAIN ) == -1)
{
if (errno != EINTR) return errno_to_status( errno );
}
return STATUS_SUCCESS;
#elif defined(TCSBRK)
while (ioctl( fd, TCSBRK, 1 ) == -1)
{
if (errno != EINTR) return errno_to_status( errno );
}
return STATUS_SUCCESS;
#else
ERR( "not supported\n" );
return STATUS_NOT_IMPLEMENTED;
#endif
}
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