743 lines
18 KiB
C
743 lines
18 KiB
C
/**
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* WinPR: Windows Portable Runtime
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* Serial Communication API
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*
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* Copyright 2011 O.S. Systems Software Ltda.
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* Copyright 2011 Eduardo Fiss Beloni <beloni@ossystems.com.br>
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* Copyright 2014 Marc-Andre Moreau <marcandre.moreau@gmail.com>
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* Copyright 2014 Hewlett-Packard Development Company, L.P.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#if defined __linux__ && !defined ANDROID
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#include <winpr/assert.h>
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#include <errno.h>
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#include <winpr/wlog.h>
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#include "comm.h"
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#include "comm_ioctl.h"
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#include "comm_serial_sys.h"
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#include "comm_sercx_sys.h"
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#include "comm_sercx2_sys.h"
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/* NB: MS-RDPESP's recommendation:
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*
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* <2> Section 3.2.5.1.6: Windows Implementations use IOCTL constants
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* for IoControlCode values. The content and values of the IOCTLs are
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* opaque to the protocol. On the server side, the data contained in
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* an IOCTL is simply packaged and sent to the client side. For
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* maximum compatibility between the different versions of the Windows
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* operating system, the client implementation only singles out
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* critical IOCTLs and invokes the applicable Win32 port API. The
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* other IOCTLS are passed directly to the client-side driver, and the
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* processing of this value depends on the drivers installed on the
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* client side. The values and parameters for these IOCTLS can be
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* found in [MSFT-W2KDDK] Volume 2, Part 2—Serial and Parallel
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* Drivers, and in [MSDN-PORTS].
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*/
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const char* _comm_serial_ioctl_name(ULONG number)
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{
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int i;
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for (i = 0; _SERIAL_IOCTL_NAMES[i].number != 0; i++)
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{
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if (_SERIAL_IOCTL_NAMES[i].number == number)
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{
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return _SERIAL_IOCTL_NAMES[i].name;
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}
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}
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return "(unknown ioctl name)";
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}
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static BOOL _CommDeviceIoControl(HANDLE hDevice, DWORD dwIoControlCode, LPVOID lpInBuffer,
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DWORD nInBufferSize, LPVOID lpOutBuffer, DWORD nOutBufferSize,
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LPDWORD lpBytesReturned, LPOVERLAPPED lpOverlapped)
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{
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WINPR_COMM* pComm = (WINPR_COMM*)hDevice;
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SERIAL_DRIVER* pServerSerialDriver = NULL;
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if (hDevice == INVALID_HANDLE_VALUE)
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{
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SetLastError(ERROR_INVALID_HANDLE);
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return FALSE;
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}
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if (!pComm || pComm->Type != HANDLE_TYPE_COMM || !pComm->fd)
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{
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SetLastError(ERROR_INVALID_HANDLE);
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return FALSE;
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}
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if (lpOverlapped)
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{
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SetLastError(ERROR_NOT_SUPPORTED);
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return FALSE;
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}
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if (lpBytesReturned == NULL)
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{
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SetLastError(ERROR_INVALID_PARAMETER); /* since we doesn't suppport lpOverlapped != NULL */
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return FALSE;
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}
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/* clear any previous last error */
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SetLastError(ERROR_SUCCESS);
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*lpBytesReturned = 0; /* will be ajusted if required ... */
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CommLog_Print(WLOG_DEBUG, "CommDeviceIoControl: IoControlCode: 0x%0.8x", dwIoControlCode);
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/* remoteSerialDriver to be use ...
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*
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* FIXME: might prefer to use an automatic rather than static structure
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*/
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switch (pComm->serverSerialDriverId)
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{
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case SerialDriverSerialSys:
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pServerSerialDriver = SerialSys_s();
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break;
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case SerialDriverSerCxSys:
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pServerSerialDriver = SerCxSys_s();
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break;
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case SerialDriverSerCx2Sys:
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pServerSerialDriver = SerCx2Sys_s();
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break;
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case SerialDriverUnknown:
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default:
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CommLog_Print(WLOG_DEBUG, "Unknown remote serial driver (%d), using SerCx2.sys",
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pComm->serverSerialDriverId);
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pServerSerialDriver = SerCx2Sys_s();
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break;
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}
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WINPR_ASSERT(pServerSerialDriver != NULL);
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switch (dwIoControlCode)
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{
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case IOCTL_USBPRINT_GET_1284_ID:
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{
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/* FIXME:
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* http://msdn.microsoft.com/en-us/library/windows/hardware/ff551803(v=vs.85).aspx */
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*lpBytesReturned = nOutBufferSize; /* an empty OutputBuffer will be returned */
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SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
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return FALSE;
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}
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case IOCTL_SERIAL_SET_BAUD_RATE:
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{
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if (pServerSerialDriver->set_baud_rate)
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{
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SERIAL_BAUD_RATE* pBaudRate = (SERIAL_BAUD_RATE*)lpInBuffer;
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WINPR_ASSERT(nInBufferSize >= sizeof(SERIAL_BAUD_RATE));
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if (nInBufferSize < sizeof(SERIAL_BAUD_RATE))
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{
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SetLastError(ERROR_INVALID_PARAMETER);
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return FALSE;
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}
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return pServerSerialDriver->set_baud_rate(pComm, pBaudRate);
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}
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break;
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}
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case IOCTL_SERIAL_GET_BAUD_RATE:
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{
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if (pServerSerialDriver->get_baud_rate)
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{
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SERIAL_BAUD_RATE* pBaudRate = (SERIAL_BAUD_RATE*)lpOutBuffer;
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WINPR_ASSERT(nOutBufferSize >= sizeof(SERIAL_BAUD_RATE));
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if (nOutBufferSize < sizeof(SERIAL_BAUD_RATE))
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{
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SetLastError(ERROR_INSUFFICIENT_BUFFER);
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return FALSE;
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}
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if (!pServerSerialDriver->get_baud_rate(pComm, pBaudRate))
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return FALSE;
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*lpBytesReturned = sizeof(SERIAL_BAUD_RATE);
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return TRUE;
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}
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break;
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}
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case IOCTL_SERIAL_GET_PROPERTIES:
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{
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if (pServerSerialDriver->get_properties)
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{
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COMMPROP* pProperties = (COMMPROP*)lpOutBuffer;
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WINPR_ASSERT(nOutBufferSize >= sizeof(COMMPROP));
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if (nOutBufferSize < sizeof(COMMPROP))
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{
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SetLastError(ERROR_INSUFFICIENT_BUFFER);
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return FALSE;
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}
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if (!pServerSerialDriver->get_properties(pComm, pProperties))
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return FALSE;
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*lpBytesReturned = sizeof(COMMPROP);
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return TRUE;
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}
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break;
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}
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case IOCTL_SERIAL_SET_CHARS:
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{
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if (pServerSerialDriver->set_serial_chars)
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{
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SERIAL_CHARS* pSerialChars = (SERIAL_CHARS*)lpInBuffer;
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WINPR_ASSERT(nInBufferSize >= sizeof(SERIAL_CHARS));
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if (nInBufferSize < sizeof(SERIAL_CHARS))
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{
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SetLastError(ERROR_INVALID_PARAMETER);
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return FALSE;
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}
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return pServerSerialDriver->set_serial_chars(pComm, pSerialChars);
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}
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break;
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}
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case IOCTL_SERIAL_GET_CHARS:
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{
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if (pServerSerialDriver->get_serial_chars)
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{
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SERIAL_CHARS* pSerialChars = (SERIAL_CHARS*)lpOutBuffer;
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WINPR_ASSERT(nOutBufferSize >= sizeof(SERIAL_CHARS));
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if (nOutBufferSize < sizeof(SERIAL_CHARS))
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{
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SetLastError(ERROR_INSUFFICIENT_BUFFER);
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return FALSE;
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}
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if (!pServerSerialDriver->get_serial_chars(pComm, pSerialChars))
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return FALSE;
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*lpBytesReturned = sizeof(SERIAL_CHARS);
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return TRUE;
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}
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break;
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}
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case IOCTL_SERIAL_SET_LINE_CONTROL:
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{
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if (pServerSerialDriver->set_line_control)
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{
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SERIAL_LINE_CONTROL* pLineControl = (SERIAL_LINE_CONTROL*)lpInBuffer;
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WINPR_ASSERT(nInBufferSize >= sizeof(SERIAL_LINE_CONTROL));
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if (nInBufferSize < sizeof(SERIAL_LINE_CONTROL))
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{
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SetLastError(ERROR_INVALID_PARAMETER);
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return FALSE;
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}
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return pServerSerialDriver->set_line_control(pComm, pLineControl);
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}
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break;
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}
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case IOCTL_SERIAL_GET_LINE_CONTROL:
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{
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if (pServerSerialDriver->get_line_control)
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{
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SERIAL_LINE_CONTROL* pLineControl = (SERIAL_LINE_CONTROL*)lpOutBuffer;
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WINPR_ASSERT(nOutBufferSize >= sizeof(SERIAL_LINE_CONTROL));
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if (nOutBufferSize < sizeof(SERIAL_LINE_CONTROL))
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{
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SetLastError(ERROR_INSUFFICIENT_BUFFER);
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return FALSE;
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}
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if (!pServerSerialDriver->get_line_control(pComm, pLineControl))
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return FALSE;
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*lpBytesReturned = sizeof(SERIAL_LINE_CONTROL);
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return TRUE;
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}
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break;
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}
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case IOCTL_SERIAL_SET_HANDFLOW:
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{
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if (pServerSerialDriver->set_handflow)
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{
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SERIAL_HANDFLOW* pHandflow = (SERIAL_HANDFLOW*)lpInBuffer;
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WINPR_ASSERT(nInBufferSize >= sizeof(SERIAL_HANDFLOW));
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if (nInBufferSize < sizeof(SERIAL_HANDFLOW))
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{
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SetLastError(ERROR_INVALID_PARAMETER);
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return FALSE;
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}
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return pServerSerialDriver->set_handflow(pComm, pHandflow);
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}
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break;
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}
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case IOCTL_SERIAL_GET_HANDFLOW:
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{
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if (pServerSerialDriver->get_handflow)
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{
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SERIAL_HANDFLOW* pHandflow = (SERIAL_HANDFLOW*)lpOutBuffer;
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WINPR_ASSERT(nOutBufferSize >= sizeof(SERIAL_HANDFLOW));
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if (nOutBufferSize < sizeof(SERIAL_HANDFLOW))
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{
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SetLastError(ERROR_INSUFFICIENT_BUFFER);
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return FALSE;
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}
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if (!pServerSerialDriver->get_handflow(pComm, pHandflow))
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return FALSE;
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*lpBytesReturned = sizeof(SERIAL_HANDFLOW);
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return TRUE;
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}
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break;
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}
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case IOCTL_SERIAL_SET_TIMEOUTS:
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{
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if (pServerSerialDriver->set_timeouts)
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{
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SERIAL_TIMEOUTS* pHandflow = (SERIAL_TIMEOUTS*)lpInBuffer;
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WINPR_ASSERT(nInBufferSize >= sizeof(SERIAL_TIMEOUTS));
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if (nInBufferSize < sizeof(SERIAL_TIMEOUTS))
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{
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SetLastError(ERROR_INVALID_PARAMETER);
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return FALSE;
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}
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return pServerSerialDriver->set_timeouts(pComm, pHandflow);
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}
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break;
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}
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case IOCTL_SERIAL_GET_TIMEOUTS:
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{
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if (pServerSerialDriver->get_timeouts)
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{
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SERIAL_TIMEOUTS* pHandflow = (SERIAL_TIMEOUTS*)lpOutBuffer;
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WINPR_ASSERT(nOutBufferSize >= sizeof(SERIAL_TIMEOUTS));
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if (nOutBufferSize < sizeof(SERIAL_TIMEOUTS))
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{
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SetLastError(ERROR_INSUFFICIENT_BUFFER);
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return FALSE;
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}
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if (!pServerSerialDriver->get_timeouts(pComm, pHandflow))
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return FALSE;
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*lpBytesReturned = sizeof(SERIAL_TIMEOUTS);
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return TRUE;
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}
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break;
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}
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case IOCTL_SERIAL_SET_DTR:
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{
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if (pServerSerialDriver->set_dtr)
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{
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return pServerSerialDriver->set_dtr(pComm);
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}
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break;
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}
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case IOCTL_SERIAL_CLR_DTR:
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{
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if (pServerSerialDriver->clear_dtr)
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{
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return pServerSerialDriver->clear_dtr(pComm);
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}
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break;
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}
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case IOCTL_SERIAL_SET_RTS:
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{
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if (pServerSerialDriver->set_rts)
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{
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return pServerSerialDriver->set_rts(pComm);
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}
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break;
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}
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case IOCTL_SERIAL_CLR_RTS:
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{
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if (pServerSerialDriver->clear_rts)
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{
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return pServerSerialDriver->clear_rts(pComm);
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}
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break;
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}
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case IOCTL_SERIAL_GET_MODEMSTATUS:
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{
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if (pServerSerialDriver->get_modemstatus)
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{
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ULONG* pRegister = (ULONG*)lpOutBuffer;
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WINPR_ASSERT(nOutBufferSize >= sizeof(ULONG));
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if (nOutBufferSize < sizeof(ULONG))
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{
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SetLastError(ERROR_INSUFFICIENT_BUFFER);
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return FALSE;
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}
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if (!pServerSerialDriver->get_modemstatus(pComm, pRegister))
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return FALSE;
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*lpBytesReturned = sizeof(ULONG);
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return TRUE;
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}
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break;
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}
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case IOCTL_SERIAL_SET_WAIT_MASK:
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{
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if (pServerSerialDriver->set_wait_mask)
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{
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ULONG* pWaitMask = (ULONG*)lpInBuffer;
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WINPR_ASSERT(nInBufferSize >= sizeof(ULONG));
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if (nInBufferSize < sizeof(ULONG))
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{
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SetLastError(ERROR_INVALID_PARAMETER);
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return FALSE;
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}
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return pServerSerialDriver->set_wait_mask(pComm, pWaitMask);
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}
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break;
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}
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case IOCTL_SERIAL_GET_WAIT_MASK:
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{
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if (pServerSerialDriver->get_wait_mask)
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{
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ULONG* pWaitMask = (ULONG*)lpOutBuffer;
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WINPR_ASSERT(nOutBufferSize >= sizeof(ULONG));
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if (nOutBufferSize < sizeof(ULONG))
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{
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SetLastError(ERROR_INSUFFICIENT_BUFFER);
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return FALSE;
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}
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if (!pServerSerialDriver->get_wait_mask(pComm, pWaitMask))
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return FALSE;
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*lpBytesReturned = sizeof(ULONG);
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return TRUE;
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}
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break;
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}
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case IOCTL_SERIAL_WAIT_ON_MASK:
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{
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if (pServerSerialDriver->wait_on_mask)
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{
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ULONG* pOutputMask = (ULONG*)lpOutBuffer;
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WINPR_ASSERT(nOutBufferSize >= sizeof(ULONG));
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if (nOutBufferSize < sizeof(ULONG))
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{
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SetLastError(ERROR_INSUFFICIENT_BUFFER);
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return FALSE;
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}
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if (!pServerSerialDriver->wait_on_mask(pComm, pOutputMask))
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{
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*lpBytesReturned = sizeof(ULONG);
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return FALSE;
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}
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*lpBytesReturned = sizeof(ULONG);
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return TRUE;
|
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}
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break;
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}
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case IOCTL_SERIAL_SET_QUEUE_SIZE:
|
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{
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if (pServerSerialDriver->set_queue_size)
|
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{
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SERIAL_QUEUE_SIZE* pQueueSize = (SERIAL_QUEUE_SIZE*)lpInBuffer;
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WINPR_ASSERT(nInBufferSize >= sizeof(SERIAL_QUEUE_SIZE));
|
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if (nInBufferSize < sizeof(SERIAL_QUEUE_SIZE))
|
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{
|
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SetLastError(ERROR_INVALID_PARAMETER);
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return FALSE;
|
|
}
|
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|
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return pServerSerialDriver->set_queue_size(pComm, pQueueSize);
|
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}
|
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break;
|
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}
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case IOCTL_SERIAL_PURGE:
|
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{
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if (pServerSerialDriver->purge)
|
|
{
|
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ULONG* pPurgeMask = (ULONG*)lpInBuffer;
|
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|
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WINPR_ASSERT(nInBufferSize >= sizeof(ULONG));
|
|
if (nInBufferSize < sizeof(ULONG))
|
|
{
|
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SetLastError(ERROR_INVALID_PARAMETER);
|
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return FALSE;
|
|
}
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|
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return pServerSerialDriver->purge(pComm, pPurgeMask);
|
|
}
|
|
break;
|
|
}
|
|
case IOCTL_SERIAL_GET_COMMSTATUS:
|
|
{
|
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if (pServerSerialDriver->get_commstatus)
|
|
{
|
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SERIAL_STATUS* pCommstatus = (SERIAL_STATUS*)lpOutBuffer;
|
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|
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WINPR_ASSERT(nOutBufferSize >= sizeof(SERIAL_STATUS));
|
|
if (nOutBufferSize < sizeof(SERIAL_STATUS))
|
|
{
|
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SetLastError(ERROR_INSUFFICIENT_BUFFER);
|
|
return FALSE;
|
|
}
|
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|
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if (!pServerSerialDriver->get_commstatus(pComm, pCommstatus))
|
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return FALSE;
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|
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*lpBytesReturned = sizeof(SERIAL_STATUS);
|
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return TRUE;
|
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}
|
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break;
|
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}
|
|
case IOCTL_SERIAL_SET_BREAK_ON:
|
|
{
|
|
if (pServerSerialDriver->set_break_on)
|
|
{
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return pServerSerialDriver->set_break_on(pComm);
|
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}
|
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break;
|
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}
|
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case IOCTL_SERIAL_SET_BREAK_OFF:
|
|
{
|
|
if (pServerSerialDriver->set_break_off)
|
|
{
|
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return pServerSerialDriver->set_break_off(pComm);
|
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}
|
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break;
|
|
}
|
|
case IOCTL_SERIAL_SET_XOFF:
|
|
{
|
|
if (pServerSerialDriver->set_xoff)
|
|
{
|
|
return pServerSerialDriver->set_xoff(pComm);
|
|
}
|
|
break;
|
|
}
|
|
case IOCTL_SERIAL_SET_XON:
|
|
{
|
|
if (pServerSerialDriver->set_xon)
|
|
{
|
|
return pServerSerialDriver->set_xon(pComm);
|
|
}
|
|
break;
|
|
}
|
|
case IOCTL_SERIAL_GET_DTRRTS:
|
|
{
|
|
if (pServerSerialDriver->get_dtrrts)
|
|
{
|
|
ULONG* pMask = (ULONG*)lpOutBuffer;
|
|
|
|
WINPR_ASSERT(nOutBufferSize >= sizeof(ULONG));
|
|
if (nOutBufferSize < sizeof(ULONG))
|
|
{
|
|
SetLastError(ERROR_INSUFFICIENT_BUFFER);
|
|
return FALSE;
|
|
}
|
|
|
|
if (!pServerSerialDriver->get_dtrrts(pComm, pMask))
|
|
return FALSE;
|
|
|
|
*lpBytesReturned = sizeof(ULONG);
|
|
return TRUE;
|
|
}
|
|
break;
|
|
}
|
|
case IOCTL_SERIAL_CONFIG_SIZE:
|
|
{
|
|
if (pServerSerialDriver->config_size)
|
|
{
|
|
ULONG* pSize = (ULONG*)lpOutBuffer;
|
|
|
|
WINPR_ASSERT(nOutBufferSize >= sizeof(ULONG));
|
|
if (nOutBufferSize < sizeof(ULONG))
|
|
{
|
|
SetLastError(ERROR_INSUFFICIENT_BUFFER);
|
|
return FALSE;
|
|
}
|
|
|
|
if (!pServerSerialDriver->config_size(pComm, pSize))
|
|
return FALSE;
|
|
|
|
*lpBytesReturned = sizeof(ULONG);
|
|
return TRUE;
|
|
}
|
|
break;
|
|
}
|
|
case IOCTL_SERIAL_IMMEDIATE_CHAR:
|
|
{
|
|
if (pServerSerialDriver->immediate_char)
|
|
{
|
|
UCHAR* pChar = (UCHAR*)lpInBuffer;
|
|
|
|
WINPR_ASSERT(nInBufferSize >= sizeof(UCHAR));
|
|
if (nInBufferSize < sizeof(UCHAR))
|
|
{
|
|
SetLastError(ERROR_INVALID_PARAMETER);
|
|
return FALSE;
|
|
}
|
|
|
|
return pServerSerialDriver->immediate_char(pComm, pChar);
|
|
}
|
|
break;
|
|
}
|
|
case IOCTL_SERIAL_RESET_DEVICE:
|
|
{
|
|
if (pServerSerialDriver->reset_device)
|
|
{
|
|
return pServerSerialDriver->reset_device(pComm);
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
CommLog_Print(
|
|
WLOG_WARN, _T("unsupported IoControlCode=[0x%08" PRIX32 "] %s (remote serial driver: %s)"),
|
|
dwIoControlCode, _comm_serial_ioctl_name(dwIoControlCode), pServerSerialDriver->name);
|
|
SetLastError(ERROR_CALL_NOT_IMPLEMENTED); /* => STATUS_NOT_IMPLEMENTED */
|
|
return FALSE;
|
|
}
|
|
|
|
/**
|
|
* FIXME: to be used through winpr-io's DeviceIoControl
|
|
*
|
|
* Any previous error as returned by GetLastError is cleared.
|
|
*
|
|
* ERRORS:
|
|
* ERROR_INVALID_HANDLE
|
|
* ERROR_INVALID_PARAMETER
|
|
* ERROR_NOT_SUPPORTED lpOverlapped is not supported
|
|
* ERROR_INSUFFICIENT_BUFFER
|
|
* ERROR_CALL_NOT_IMPLEMENTED unimplemented ioctl
|
|
*/
|
|
BOOL CommDeviceIoControl(HANDLE hDevice, DWORD dwIoControlCode, LPVOID lpInBuffer,
|
|
DWORD nInBufferSize, LPVOID lpOutBuffer, DWORD nOutBufferSize,
|
|
LPDWORD lpBytesReturned, LPOVERLAPPED lpOverlapped)
|
|
{
|
|
WINPR_COMM* pComm = (WINPR_COMM*)hDevice;
|
|
BOOL result;
|
|
|
|
if (hDevice == INVALID_HANDLE_VALUE)
|
|
{
|
|
SetLastError(ERROR_INVALID_HANDLE);
|
|
return FALSE;
|
|
}
|
|
|
|
if (!pComm || pComm->Type != HANDLE_TYPE_COMM || !pComm->fd)
|
|
{
|
|
SetLastError(ERROR_INVALID_HANDLE);
|
|
return FALSE;
|
|
}
|
|
|
|
result = _CommDeviceIoControl(hDevice, dwIoControlCode, lpInBuffer, nInBufferSize, lpOutBuffer,
|
|
nOutBufferSize, lpBytesReturned, lpOverlapped);
|
|
|
|
if (lpBytesReturned && *lpBytesReturned != nOutBufferSize)
|
|
{
|
|
/* This might be a hint for a bug, especially when result==TRUE */
|
|
CommLog_Print(WLOG_WARN,
|
|
"lpBytesReturned=%" PRIu32 " and nOutBufferSize=%" PRIu32 " are different!",
|
|
*lpBytesReturned, nOutBufferSize);
|
|
}
|
|
|
|
if (pComm->permissive)
|
|
{
|
|
if (!result)
|
|
{
|
|
CommLog_Print(
|
|
WLOG_WARN,
|
|
"[permissive]: whereas it failed, made to succeed IoControlCode=[0x%08" PRIX32
|
|
"] %s, last-error: 0x%08" PRIX32 "",
|
|
dwIoControlCode, _comm_serial_ioctl_name(dwIoControlCode), GetLastError());
|
|
}
|
|
|
|
return TRUE; /* always! */
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
int _comm_ioctl_tcsetattr(int fd, int optional_actions, const struct termios* termios_p)
|
|
{
|
|
int result;
|
|
struct termios currentState;
|
|
|
|
if ((result = tcsetattr(fd, optional_actions, termios_p)) < 0)
|
|
{
|
|
CommLog_Print(WLOG_WARN, "tcsetattr failure, errno: %d", errno);
|
|
return result;
|
|
}
|
|
|
|
/* NB: tcsetattr() can succeed even if not all changes have been applied. */
|
|
ZeroMemory(¤tState, sizeof(struct termios));
|
|
if ((result = tcgetattr(fd, ¤tState)) < 0)
|
|
{
|
|
CommLog_Print(WLOG_WARN, "tcgetattr failure, errno: %d", errno);
|
|
return result;
|
|
}
|
|
|
|
if (memcmp(¤tState, termios_p, sizeof(struct termios)) != 0)
|
|
{
|
|
CommLog_Print(WLOG_DEBUG,
|
|
"all termios parameters are not set yet, doing a second attempt...");
|
|
if ((result = tcsetattr(fd, optional_actions, termios_p)) < 0)
|
|
{
|
|
CommLog_Print(WLOG_WARN, "2nd tcsetattr failure, errno: %d", errno);
|
|
return result;
|
|
}
|
|
|
|
ZeroMemory(¤tState, sizeof(struct termios));
|
|
if ((result = tcgetattr(fd, ¤tState)) < 0)
|
|
{
|
|
CommLog_Print(WLOG_WARN, "tcgetattr failure, errno: %d", errno);
|
|
return result;
|
|
}
|
|
|
|
if (memcmp(¤tState, termios_p, sizeof(struct termios)) != 0)
|
|
{
|
|
CommLog_Print(WLOG_WARN,
|
|
"Failure: all termios parameters are still not set on a second attempt");
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
#endif /* __linux__ */
|