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wine/dlls/ntdll/serial.c
Reinhard Karcher 64c1c017c4 ntdll: Fix DTR and CTS controls in serial code.
2007-01-03 12:01:31 +01:00

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/* Main file for COMM support
*
* DEC 93 Erik Bos <erik@xs4all.nl>
* 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
*/
#include "config.h"
#include "wine/port.h"
#include <errno.h>
#include <string.h>
#include <stdlib.h>
#include <stdarg.h>
#include <stdio.h>
#ifdef HAVE_STRINGS_H
# include <strings.h>
#endif
#ifdef HAVE_TERMIOS_H
#include <termios.h>
#endif
#ifdef HAVE_IO_H
# include <io.h>
#endif
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif
#ifdef HAVE_TERMIOS_H
#include <termios.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
#define NONAMELESSUNION
#define NONAMELESSSTRUCT
#include "ntstatus.h"
#define WIN32_NO_STATUS
#include "windef.h"
#include "winternl.h"
#include "winioctl.h"
#include "ddk/ntddser.h"
#include "ntdll_misc.h"
#include "wine/server.h"
#include "wine/library.h"
#include "wine/debug.h"
#ifdef HAVE_LINUX_SERIAL_H
#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 FILE_GetNtStatus();
}
#ifndef __EMX__
#ifdef CBAUD
speed = port.c_cflag & CBAUD;
#else
speed = cfgetospeed(&port);
#endif
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
default:
ERR("unknown speed %x\n", speed);
return STATUS_INVALID_PARAMETER;
}
#else
return STATUS_INVALID_PARAMETER;
#endif
return STATUS_SUCCESS;
}
static NTSTATUS get_hand_flow(int fd, SERIAL_HANDFLOW* shf)
{
int stat;
struct termios port;
if (tcgetattr(fd, &port) == -1)
{
ERR("tcgetattr error '%s'\n", strerror(errno));
return FILE_GetNtStatus();
}
#ifdef TIOCMGET
if (ioctl(fd, TIOCMGET, &stat) == -1)
{
WARN("ioctl error '%s'\n", strerror(errno));
stat = DTR_CONTROL_ENABLE | RTS_CONTROL_ENABLE;
}
#endif
/* termios does not support DTR/DSR flow control */
shf->ControlHandShake = 0;
shf->FlowReplace = 0;
#ifdef TIOCM_DTR
if (stat & TIOCM_DTR)
#endif
shf->ControlHandShake |= SERIAL_DTR_CONTROL;
#ifdef CRTSCTS
if (port.c_cflag & CRTSCTS)
{
shf->ControlHandShake |= SERIAL_DTR_CONTROL | SERIAL_DTR_HANDSHAKE;
shf->ControlHandShake |= SERIAL_CTS_HANDSHAKE;
}
else
#endif
{
#ifdef TIOCM_RTS
if (stat & TIOCM_RTS)
#endif
shf->ControlHandShake |= SERIAL_RTS_CONTROL;
}
if (port.c_iflag & IXON)
shf->FlowReplace |= SERIAL_AUTO_RECEIVE;
if (port.c_iflag & IXOFF)
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 FILE_GetNtStatus();
}
#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|CMSPAR: slc->Parity = MARKPARITY; break;
case PARENB|PARODD|CMSPAR: slc->Parity = SPACEPARITY; break;
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_SUCCESS;
int mstat;
#ifdef TIOCMGET
if (ioctl(fd, TIOCMGET, &mstat) == -1)
{
WARN("ioctl failed\n");
status = FILE_GetNtStatus();
}
else
{
*lpModemStat = 0;
#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 " : "");
}
#else
status = STATUS_NOT_SUPPORTED;
#endif
return status;
}
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 FILE_GetNtStatus();
}
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 = FILE_GetNtStatus();
}
#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 = FILE_GetNtStatus();
}
#else
ss->AmountInInQueue = 0; /* FIXME: find a different way to find out */
#endif
return status;
}
static NTSTATUS get_timeouts(HANDLE handle, SERIAL_TIMEOUTS* st)
{
NTSTATUS status;
SERVER_START_REQ( get_serial_info )
{
req->handle = handle;
if (!(status = wine_server_call( req )))
{
st->ReadIntervalTimeout = reply->readinterval;
st->ReadTotalTimeoutMultiplier = reply->readmult;
st->ReadTotalTimeoutConstant = reply->readconst;
st->WriteTotalTimeoutMultiplier = reply->writemult;
st->WriteTotalTimeoutConstant = reply->writeconst;
}
}
SERVER_END_REQ;
return status;
}
static NTSTATUS get_wait_mask(HANDLE hDevice, DWORD* mask)
{
NTSTATUS status;
SERVER_START_REQ( get_serial_info )
{
req->handle = hDevice;
if (!(status = wine_server_call( req )))
*mask = reply->eventmask;
}
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 FILE_GetNtStatus();
}
#ifdef CBAUD
port.c_cflag &= ~CBAUD;
switch (sbr->BaudRate)
{
case 0: port.c_cflag |= B0; break;
case 50: port.c_cflag |= B50; break;
case 75: port.c_cflag |= B75; break;
case 110:
case CBR_110: port.c_cflag |= B110; break;
case 134: port.c_cflag |= B134; break;
case 150: port.c_cflag |= B150; break;
case 200: port.c_cflag |= B200; break;
case 300:
case CBR_300: port.c_cflag |= B300; break;
case 600:
case CBR_600: port.c_cflag |= B600; break;
case 1200:
case CBR_1200: port.c_cflag |= B1200; break;
case 1800: port.c_cflag |= B1800; break;
case 2400:
case CBR_2400: port.c_cflag |= B2400; break;
case 4800:
case CBR_4800: port.c_cflag |= B4800; break;
case 9600:
case CBR_9600: port.c_cflag |= B9600; break;
case 19200:
case CBR_19200: port.c_cflag |= B19200; break;
case 38400:
case CBR_38400: port.c_cflag |= B38400; break;
#ifdef B57600
case 57600: port.c_cflag |= B57600; break;
#endif
#ifdef B115200
case 115200: port.c_cflag |= B115200;break;
#endif
#ifdef B230400
case 230400: port.c_cflag |= B230400;break;
#endif
#ifdef B460800
case 460800: port.c_cflag |= B460800;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);
port.c_cflag |= B38400;
}
break;
#endif /* Don't have linux/serial.h or lack TIOCSSERIAL */
ERR("baudrate %d\n", sbr->BaudRate);
return STATUS_NOT_SUPPORTED;
}
#elif !defined(__EMX__)
switch (sbr->BaudRate)
{
case 0: port.c_ospeed = B0; break;
case 50: port.c_ospeed = B50; break;
case 75: port.c_ospeed = B75; break;
case 110:
case CBR_110: port.c_ospeed = B110; break;
case 134: port.c_ospeed = B134; break;
case 150: port.c_ospeed = B150; break;
case 200: port.c_ospeed = B200; break;
case 300:
case CBR_300: port.c_ospeed = B300; break;
case 600:
case CBR_600: port.c_ospeed = B600; break;
case 1200:
case CBR_1200: port.c_ospeed = B1200; break;
case 1800: port.c_ospeed = B1800; break;
case 2400:
case CBR_2400: port.c_ospeed = B2400; break;
case 4800:
case CBR_4800: port.c_ospeed = B4800; break;
case 9600:
case CBR_9600: port.c_ospeed = B9600; break;
case 19200:
case CBR_19200: port.c_ospeed = B19200; break;
case 38400:
case CBR_38400: port.c_ospeed = B38400; break;
#ifdef B57600
case 57600:
case CBR_57600: port.c_cflag |= B57600; break;
#endif
#ifdef B115200
case 115200:
case CBR_115200: port.c_cflag |= B115200;break;
#endif
#ifdef B230400
case 230400: port.c_cflag |= B230400;break;
#endif
#ifdef B460800
case 460800: port.c_cflag |= B460800;break;
#endif
default:
ERR("baudrate %d\n", sbr->BaudRate);
return STATUS_NOT_SUPPORTED;
}
port.c_ispeed = port.c_ospeed;
#endif
if (tcsetattr(fd, TCSANOW, &port) == -1)
{
ERR("tcsetattr error '%s'\n", strerror(errno));
return FILE_GetNtStatus();
}
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 FILE_GetNtStatus();
}
#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 |= IXON;
else
port.c_iflag &= ~IXON;
if (shf->FlowReplace & SERIAL_AUTO_TRANSMIT)
port.c_iflag |= IXOFF;
else
port.c_iflag &= ~IXOFF;
if (tcsetattr(fd, TCSANOW, &port) == -1)
{
ERR("tcsetattr error '%s'\n", strerror(errno));
return FILE_GetNtStatus();
}
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 FILE_GetNtStatus();
}
#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;
port.c_lflag &= ~(ICANON|ECHO|ISIG);
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
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 | CMSPAR; break;
case SPACEPARITY: port.c_cflag |= PARENB | PARODD | CMSPAR; break;
#else
/* try the POSIX way */
case MARKPARITY:
if (slc->StopBits == ONESTOPBIT)
{
stopbits = TWOSTOPBITS;
port.c_iflag &= ~INPCK;
}
else
{
ERR("Cannot set MARK Parity\n");
return STATUS_NOT_SUPPORTED;
}
break;
case SPACEPARITY:
if (slc->WordLength < 8)
{
bytesize +=1;
port.c_iflag &= ~INPCK;
}
else
{
ERR("Cannot set SPACE Parity\n");
return STATUS_NOT_SUPPORTED;
}
break;
#endif
default:
ERR("Parity\n");
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:
ERR("ByteSize\n");
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:
ERR("StopBits\n");
return STATUS_NOT_SUPPORTED;
}
/* otherwise it hangs with pending input*/
if (tcsetattr(fd, TCSANOW, &port) == -1)
{
ERR("tcsetattr error '%s'\n", strerror(errno));
return FILE_GetNtStatus();
}
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 FILE_GetNtStatus();
}
port.c_cc[VMIN ] = 0;
port.c_cc[VTIME ] = 1;
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 FILE_GetNtStatus();
}
return STATUS_SUCCESS;
}
static NTSTATUS set_timeouts(HANDLE handle, int fd, const SERIAL_TIMEOUTS* st)
{
NTSTATUS status;
struct termios port;
unsigned int ux_timeout;
SERVER_START_REQ( set_serial_info )
{
req->handle = handle;
req->flags = SERIALINFO_SET_TIMEOUTS;
req->readinterval = st->ReadIntervalTimeout ;
req->readmult = st->ReadTotalTimeoutMultiplier ;
req->readconst = st->ReadTotalTimeoutConstant ;
req->writemult = st->WriteTotalTimeoutMultiplier ;
req->writeconst = st->WriteTotalTimeoutConstant ;
status = wine_server_call( req );
}
SERVER_END_REQ;
if (status) return status;
if (tcgetattr(fd, &port) == -1)
{
FIXME("tcgetattr on fd %d failed (%s)!\n", fd, strerror(errno));
return FILE_GetNtStatus();
}
/* VTIME is in 1/10 seconds */
if (st->ReadIntervalTimeout == 0) /* 0 means no timeout */
ux_timeout = 0;
else
{
ux_timeout = (st->ReadIntervalTimeout + 99) / 100;
if (ux_timeout == 0)
ux_timeout = 1; /* must be at least some timeout */
}
port.c_cc[VTIME] = ux_timeout;
if (tcsetattr(fd, 0, &port) == -1)
{
FIXME("tcsetattr on fd %d failed (%s)!\n", fd, strerror(errno));
return FILE_GetNtStatus();
}
return STATUS_SUCCESS;
}
static NTSTATUS set_wait_mask(HANDLE hDevice, DWORD mask)
{
NTSTATUS status;
SERVER_START_REQ( set_serial_info )
{
req->handle = hDevice;
req->flags = SERIALINFO_SET_MASK;
req->eventmask = mask;
status = wine_server_call( req );
}
SERVER_END_REQ;
return status;
}
static NTSTATUS set_XOff(int fd)
{
struct termios port;
if (tcgetattr(fd,&port) == -1)
{
FIXME("tcgetattr on fd %d failed (%s)!\n", fd, strerror(errno));
return FILE_GetNtStatus();
}
port.c_iflag |= IXOFF;
if (tcsetattr(fd, TCSADRAIN, &port) == -1)
{
FIXME("tcsetattr on fd %d failed (%s)!\n", fd, strerror(errno));
return FILE_GetNtStatus();
}
return STATUS_SUCCESS;
}
static NTSTATUS set_XOn(int fd)
{
struct termios port;
if (tcgetattr(fd,&port) == -1)
{
FIXME("tcgetattr on fd %d failed (%s)!\n", fd, strerror(errno));
return FILE_GetNtStatus();
}
port.c_iflag |= IXON;
if (tcsetattr(fd, TCSADRAIN, &port) == -1)
{
FIXME("tcsetattr on fd %d failed (%s)!\n", fd, strerror(errno));
return FILE_GetNtStatus();
}
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;
}serial_irq_info;
/***********************************************************************
* Data needed by the thread polling for the changing CommEvent
*/
typedef struct async_commio
{
HANDLE hDevice;
DWORD* events;
HANDLE hEvent;
DWORD evtmask;
DWORD mstat;
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)
{
#ifdef 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;
return STATUS_SUCCESS;
}
TRACE("TIOCGICOUNT err %s\n", strerror(errno));
return FILE_GetNtStatus();
#endif
memset(irq_info,0, sizeof(serial_irq_info));
return STATUS_NOT_IMPLEMENTED;
}
static DWORD WINAPI check_events(int fd, DWORD mask,
const serial_irq_info *new,
const serial_irq_info *old,
DWORD new_mstat, DWORD old_mstat)
{
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);
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)
{
queue = 0;
/* We really want to know when all characters have gone out of the transmitter */
#if defined(TIOCSERGETLSR)
if (ioctl(fd, TIOCSERGETLSR, &queue))
WARN("TIOCSERGETLSR returned error\n");
if (queue)
/* TIOCOUTQ only checks for an empty buffer */
#elif defined(TIOCOUTQ)
if (ioctl(fd, TIOCOUTQ, &queue))
WARN("TIOCOUTQ returned error\n");
if (!queue)
#endif
ret |= EV_TXEMPTY;
TRACE("OUTQUEUE %d, Transmitter %sempty\n",
queue, (ret & EV_TXEMPTY) ? "" : "not ");
}
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 DWORD CALLBACK wait_for_event(LPVOID arg)
{
async_commio *commio = (async_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, new_evtmask;
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 = check_events(fd, commio->evtmask,
&new_irq_info, &commio->irq_info,
new_mstat, commio->mstat);
if (*commio->events) break;
get_wait_mask(commio->hDevice, &new_evtmask);
if (commio->evtmask != new_evtmask)
{
*commio->events = 0;
break;
}
}
if (needs_close) close( fd );
}
if (commio->hEvent) NtSetEvent(commio->hEvent, NULL);
RtlFreeHeap(GetProcessHeap(), 0, commio);
return 0;
}
static NTSTATUS wait_on(HANDLE hDevice, int fd, HANDLE hEvent, DWORD* events)
{
async_commio* commio;
NTSTATUS status;
if ((status = NtResetEvent(hEvent, NULL)))
return status;
commio = RtlAllocateHeap(GetProcessHeap(), 0, sizeof (async_commio));
if (!commio) return STATUS_NO_MEMORY;
commio->hDevice = hDevice;
commio->events = events;
commio->hEvent = hEvent;
get_wait_mask(commio->hDevice, &commio->evtmask);
/* 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)) ||
(status = get_modem_status(fd, &commio->mstat)))
goto out_now;
/* We might have received something or the TX bufffer is delivered */
*events = check_events(fd, commio->evtmask,
&commio->irq_info, &commio->irq_info,
commio->mstat, commio->mstat);
if (*events) goto out_now;
/* create the worker for the task */
status = RtlQueueWorkItem(wait_for_event, commio, 0 /* FIXME */);
if (status != STATUS_SUCCESS) goto out_now;
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:
RtlFreeHeap(GetProcessHeap(), 0, commio);
return status;
}
static NTSTATUS xmit_immediate(HANDLE hDevice, int fd, 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 FILE_GetNtStatus();
return STATUS_SUCCESS;
}
/******************************************************************
* COMM_DeviceIoControl
*
*
*/
static inline NTSTATUS io_control(HANDLE hDevice,
HANDLE hEvent, PIO_APC_ROUTINE UserApcRoutine,
PVOID UserApcContext,
PIO_STATUS_BLOCK piosb,
ULONG dwIoControlCode,
LPVOID lpInBuffer, DWORD nInBufferSize,
LPVOID lpOutBuffer, DWORD nOutBufferSize)
{
DWORD sz = 0, access = FILE_READ_DATA;
NTSTATUS status = STATUS_SUCCESS;
int fd = -1, needs_close = 0;
TRACE("%p %s %p %d %p %d %p\n",
hDevice, iocode2str(dwIoControlCode), lpInBuffer, nInBufferSize,
lpOutBuffer, nOutBufferSize, piosb);
piosb->Information = 0;
if (dwIoControlCode != IOCTL_SERIAL_GET_TIMEOUTS)
if ((status = server_get_unix_fd( hDevice, access, &fd, &needs_close, NULL, NULL )))
goto error;
switch (dwIoControlCode)
{
case IOCTL_SERIAL_CLR_DTR:
#ifdef TIOCM_DTR
if (whack_modem(fd, ~TIOCM_DTR, 0) == -1) status = FILE_GetNtStatus();
#else
status = STATUS_NOT_SUPPORTED;
#endif
break;
case IOCTL_SERIAL_CLR_RTS:
#ifdef TIOCM_RTS
if (whack_modem(fd, ~TIOCM_RTS, 0) == -1) status = FILE_GetNtStatus();
#else
status = STATUS_NOT_SUPPORTED;
#endif
break;
case IOCTL_SERIAL_GET_BAUD_RATE:
if (lpOutBuffer && nOutBufferSize == sizeof(SERIAL_BAUD_RATE))
{
if (!(status = get_baud_rate(fd, (SERIAL_BAUD_RATE*)lpOutBuffer)))
sz = sizeof(SERIAL_BAUD_RATE);
}
else
status = STATUS_INVALID_PARAMETER;
break;
case IOCTL_SERIAL_GET_CHARS:
if (lpOutBuffer && nOutBufferSize == sizeof(SERIAL_CHARS))
{
if (!(status = get_special_chars(fd, (SERIAL_CHARS*)lpOutBuffer)))
sz = sizeof(SERIAL_CHARS);
}
else
status = STATUS_INVALID_PARAMETER;
break;
case IOCTL_SERIAL_GET_COMMSTATUS:
if (lpOutBuffer && nOutBufferSize == sizeof(SERIAL_STATUS))
{
if (!(status = get_status(fd, (SERIAL_STATUS*)lpOutBuffer)))
sz = sizeof(SERIAL_STATUS);
}
else status = STATUS_INVALID_PARAMETER;
break;
case IOCTL_SERIAL_GET_HANDFLOW:
if (lpOutBuffer && nOutBufferSize == sizeof(SERIAL_HANDFLOW))
{
if (!(status = get_hand_flow(fd, (SERIAL_HANDFLOW*)lpOutBuffer)))
sz = sizeof(SERIAL_HANDFLOW);
}
else
status = STATUS_INVALID_PARAMETER;
break;
case IOCTL_SERIAL_GET_LINE_CONTROL:
if (lpOutBuffer && nOutBufferSize == sizeof(SERIAL_LINE_CONTROL))
{
if (!(status = get_line_control(fd, (SERIAL_LINE_CONTROL*)lpOutBuffer)))
sz = sizeof(SERIAL_LINE_CONTROL);
}
else
status = STATUS_INVALID_PARAMETER;
break;
case IOCTL_SERIAL_GET_MODEMSTATUS:
if (lpOutBuffer && nOutBufferSize == sizeof(DWORD))
{
if (!(status = get_modem_status(fd, (DWORD*)lpOutBuffer)))
sz = sizeof(DWORD);
}
else status = STATUS_INVALID_PARAMETER;
break;
case IOCTL_SERIAL_GET_TIMEOUTS:
if (lpOutBuffer && nOutBufferSize == sizeof(SERIAL_TIMEOUTS))
{
if (!(status = get_timeouts(hDevice, (SERIAL_TIMEOUTS*)lpOutBuffer)))
sz = sizeof(SERIAL_TIMEOUTS);
}
else
status = STATUS_INVALID_PARAMETER;
break;
case IOCTL_SERIAL_GET_WAIT_MASK:
if (lpOutBuffer && nOutBufferSize == sizeof(DWORD))
{
if (!(status = get_wait_mask(hDevice, (DWORD*)lpOutBuffer)))
sz = sizeof(DWORD);
}
else
status = STATUS_INVALID_PARAMETER;
break;
case IOCTL_SERIAL_IMMEDIATE_CHAR:
if (lpInBuffer && nInBufferSize == sizeof(CHAR))
status = xmit_immediate(hDevice, fd, lpInBuffer);
else
status = STATUS_INVALID_PARAMETER;
break;
case IOCTL_SERIAL_PURGE:
if (lpInBuffer && nInBufferSize == sizeof(DWORD))
status = purge(fd, *(DWORD*)lpInBuffer);
else
status = STATUS_INVALID_PARAMETER;
break;
case IOCTL_SERIAL_RESET_DEVICE:
FIXME("Unsupported\n");
break;
case IOCTL_SERIAL_SET_BAUD_RATE:
if (lpInBuffer && nInBufferSize == sizeof(SERIAL_BAUD_RATE))
status = set_baud_rate(fd, (const SERIAL_BAUD_RATE*)lpInBuffer);
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 = FILE_GetNtStatus();
}
#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 = FILE_GetNtStatus();
}
#else
FIXME("ioctl not available\n");
status = STATUS_NOT_SUPPORTED;
#endif
break;
case IOCTL_SERIAL_SET_CHARS:
if (lpInBuffer && nInBufferSize == sizeof(SERIAL_CHARS))
status = set_special_chars(fd, (const SERIAL_CHARS*)lpInBuffer);
else
status = STATUS_INVALID_PARAMETER;
break;
case IOCTL_SERIAL_SET_DTR:
#ifdef TIOCM_DTR
if (whack_modem(fd, 0, TIOCM_DTR) == -1) status = FILE_GetNtStatus();
#else
status = STATUS_NOT_SUPPORTED;
#endif
break;
case IOCTL_SERIAL_SET_HANDFLOW:
if (lpInBuffer && nInBufferSize == sizeof(SERIAL_HANDFLOW))
status = set_handflow(fd, (const SERIAL_HANDFLOW*)lpInBuffer);
else
status = STATUS_INVALID_PARAMETER;
break;
case IOCTL_SERIAL_SET_LINE_CONTROL:
if (lpInBuffer && nInBufferSize == sizeof(SERIAL_LINE_CONTROL))
status = set_line_control(fd, (const SERIAL_LINE_CONTROL*)lpInBuffer);
else
status = STATUS_INVALID_PARAMETER;
break;
case IOCTL_SERIAL_SET_QUEUE_SIZE:
if (lpInBuffer && nInBufferSize == sizeof(SERIAL_QUEUE_SIZE))
status = set_queue_size(fd, (const SERIAL_QUEUE_SIZE*)lpInBuffer);
else
status = STATUS_INVALID_PARAMETER;
break;
case IOCTL_SERIAL_SET_RTS:
#ifdef TIOCM_RTS
if (whack_modem(fd, 0, TIOCM_RTS) == -1) status = FILE_GetNtStatus();
#else
status = STATUS_NOT_SUPPORTED;
#endif
break;
case IOCTL_SERIAL_SET_TIMEOUTS:
if (lpInBuffer && nInBufferSize == sizeof(SERIAL_TIMEOUTS))
status = set_timeouts(hDevice, fd, (const SERIAL_TIMEOUTS*)lpInBuffer);
else
status = STATUS_INVALID_PARAMETER;
break;
case IOCTL_SERIAL_SET_WAIT_MASK:
if (lpInBuffer && nInBufferSize == sizeof(DWORD))
{
status = set_wait_mask(hDevice, *(DWORD*)lpInBuffer);
}
else status = STATUS_INVALID_PARAMETER;
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 (lpOutBuffer && nOutBufferSize == sizeof(DWORD))
{
if (!(status = wait_on(hDevice, fd, hEvent, (DWORD*)lpOutBuffer)))
sz = sizeof(DWORD);
}
else
status = STATUS_INVALID_PARAMETER;
break;
default:
FIXME("Unsupported IOCTL %x (type=%x access=%x func=%x meth=%x)\n",
dwIoControlCode, dwIoControlCode >> 16, (dwIoControlCode >> 14) & 3,
(dwIoControlCode >> 2) & 0xFFF, dwIoControlCode & 3);
sz = 0;
status = STATUS_INVALID_PARAMETER;
break;
}
if (needs_close) close( fd );
error:
piosb->u.Status = status;
piosb->Information = sz;
if (hEvent && status != STATUS_PENDING) NtSetEvent(hEvent, NULL);
return status;
}
NTSTATUS COMM_DeviceIoControl(HANDLE hDevice,
HANDLE hEvent, PIO_APC_ROUTINE UserApcRoutine,
PVOID UserApcContext,
PIO_STATUS_BLOCK piosb,
ULONG dwIoControlCode,
LPVOID lpInBuffer, DWORD nInBufferSize,
LPVOID lpOutBuffer, DWORD nOutBufferSize)
{
NTSTATUS status;
if (dwIoControlCode == IOCTL_SERIAL_WAIT_ON_MASK)
{
HANDLE hev = hEvent;
/* this is an ioctl we implement in a non blocking way if hEvent is not
* null
* so we have to explicitely wait if no hEvent 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, FALSE, FALSE);
if (status) goto done;
}
status = io_control(hDevice, hev, UserApcRoutine, UserApcContext,
piosb, dwIoControlCode, lpInBuffer, nInBufferSize,
lpOutBuffer, nOutBufferSize);
if (hev != hEvent)
{
if (status == STATUS_PENDING)
{
NtWaitForSingleObject(hev, FALSE, NULL);
status = STATUS_SUCCESS;
}
NtClose(hev);
}
}
else status = io_control(hDevice, hEvent, UserApcRoutine, UserApcContext,
piosb, dwIoControlCode, lpInBuffer, nInBufferSize,
lpOutBuffer, nOutBufferSize);
done:
return status;
}
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