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kernel32: Implemented ClearCommError on top of GET_COMM_STATUS ioctl.

This commit is contained in:
Eric Pouech 2006-02-27 22:22:06 +01:00 committed by Alexandre Julliard
parent a6d339c656
commit 8e5d2bdba6
1 changed files with 30 additions and 34 deletions
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64
dlls/kernel/comm.c
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@ -833,51 +833,47 @@ BOOL WINAPI PurgeComm(HANDLE handle, DWORD flags)
* Enables further I/O operations on a communications resource after
* supplying error and current status information.
*
* PARAMS
*
* handle [in] The communication resource with the error
* errors [out] Flags indicating error the resource experienced
* lpStat [out] The status of the communication resource
* RETURNS
*
* True on success, false if the communication resource handle is bad.
*/
BOOL WINAPI ClearCommError(
HANDLE handle, /* [in] The communication resource with the error. */
LPDWORD errors, /* [out] Flags indicating error the resource experienced. */
LPCOMSTAT lpStat) /* [out] The status of the communication resource. */
BOOL WINAPI ClearCommError(HANDLE handle, LPDWORD errors, LPCOMSTAT lpStat)
{
int fd;
SERIAL_STATUS ss;
fd=get_comm_fd( handle, FILE_READ_DATA );
if(0>fd) return FALSE;
if (!DeviceIoControl(handle, IOCTL_SERIAL_GET_COMMSTATUS, NULL, 0,
&ss, sizeof(ss), NULL, NULL))
return FALSE;
if (errors)
{
*errors = 0;
if (ss.Errors & SERIAL_ERROR_BREAK) *errors |= CE_BREAK;
if (ss.Errors & SERIAL_ERROR_FRAMING) *errors |= CE_FRAME;
if (ss.Errors & SERIAL_ERROR_OVERRUN) *errors |= CE_OVERRUN;
if (ss.Errors & SERIAL_ERROR_QUEUEOVERRUN) *errors |= CE_RXOVER;
if (ss.Errors & SERIAL_ERROR_PARITY) *errors |= CE_RXPARITY;
}
if (lpStat)
{
lpStat->fCtsHold = 0;
lpStat->fDsrHold = 0;
lpStat->fRlsdHold = 0;
lpStat->fXoffHold = 0;
lpStat->fXoffSent = 0;
lpStat->fEof = 0;
lpStat->fTxim = 0;
lpStat->fReserved = 0;
memset(lpStat, 0, sizeof(*lpStat));
#ifdef TIOCOUTQ
if(ioctl(fd, TIOCOUTQ, &lpStat->cbOutQue))
WARN("ioctl returned error\n");
#else
lpStat->cbOutQue = 0; /* FIXME: find a different way to find out */
#endif
#ifdef TIOCINQ
if(ioctl(fd, TIOCINQ, &lpStat->cbInQue))
WARN("ioctl returned error\n");
#endif
TRACE("handle %p cbInQue = %ld cbOutQue = %ld\n",
handle, lpStat->cbInQue, lpStat->cbOutQue);
if (ss.HoldReasons & SERIAL_TX_WAITING_FOR_CTS) lpStat->fCtsHold = TRUE;
if (ss.HoldReasons & SERIAL_TX_WAITING_FOR_DSR) lpStat->fDsrHold = TRUE;
if (ss.HoldReasons & SERIAL_TX_WAITING_FOR_DCD) lpStat->fRlsdHold = TRUE;
if (ss.HoldReasons & SERIAL_TX_WAITING_FOR_XON) lpStat->fXoffHold = TRUE;
if (ss.HoldReasons & SERIAL_TX_WAITING_XOFF_SENT) lpStat->fXoffSent = TRUE;
if (ss.EofReceived) lpStat->fEof = TRUE;
if (ss.WaitForImmediate) lpStat->fTxim = TRUE;
lpStat->cbInQue = ss.AmountInInQueue;
lpStat->cbOutQue = ss.AmountInOutQueue;
}
release_comm_fd( handle, fd );
if (errors) *errors = 0; /* FIXME */
return TRUE;
}