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159 lines
2.8 KiB
159 lines
2.8 KiB
/*++
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Copyright (c) 1989 Microsoft Corporation
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Module Name:
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conrqust.c
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Abstract:
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This module contains the handler for console requests.
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Author:
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Avi Nathan (avin) 17-Jul-1991
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Environment:
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User Mode Only
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Revision History:
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Ellen Aycock-Wright (ellena) 15-Sept-1991 Modified for POSIX
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--*/
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#define WIN32_ONLY
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#include "psxses.h"
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#include <stdio.h>
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#include <io.h>
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#include <fcntl.h>
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#include <errno.h>
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//
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// ServeConRequest -- perform a console request
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//
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// pReq - the request message
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// pStatus - returned errno, 0 for success
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//
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// returns: TRUE (reply to the caller)
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//
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BOOL
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ServeConRequest(
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IN PSCCONREQUEST pReq,
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OUT PDWORD pStatus
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)
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{
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DWORD IoLengthDone;
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DWORD Rc;
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HANDLE h;
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int fd;
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int error;
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*pStatus = 0;
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//
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// If the KbdThread has not been started, we do IO in the
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// conventional way. Since starting the thread depends on the
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// user setting an environment variable, this is a backward-
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// compatibility mode.
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//
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switch (pReq->Request) {
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case ScReadFile:
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fd = HandleToLong(pReq->d.IoBuf.Handle);
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if (DoTrickyIO && _isatty(fd)) {
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IoLengthDone = TermInput(hConsoleInput,
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PsxSessionDataBase,
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(unsigned int)pReq->d.IoBuf.Len,
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pReq->d.IoBuf.Flags,
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&error
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);
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} else {
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_setmode(fd, _O_BINARY);
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IoLengthDone = _read(fd,
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PsxSessionDataBase,
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(unsigned int)pReq->d.IoBuf.Len);
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if (-1 == IoLengthDone) {
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error = EBADF;
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}
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}
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pReq->d.IoBuf.Len = IoLengthDone;
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if (IoLengthDone == -1) {
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*pStatus = error;
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}
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break;
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case ScWriteFile:
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fd = HandleToLong(pReq->d.IoBuf.Handle);
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if (fd > 2) {
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fd++;
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}
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if (DoTrickyIO && _isatty(fd)) {
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IoLengthDone = TermOutput(hConsoleOutput,
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(LPSTR)PsxSessionDataBase,
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(DWORD)pReq->d.IoBuf.Len);
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} else {
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// not a tty.
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_setmode(fd, _O_BINARY);
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IoLengthDone = _write(fd, PsxSessionDataBase,
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(unsigned int)pReq->d.IoBuf.Len);
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}
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pReq->d.IoBuf.Len = IoLengthDone;
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if (-1 == IoLengthDone) {
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*pStatus = EBADF;
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}
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break;
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case ScKbdCharIn:
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Rc = GetPsxChar(&pReq->d.AsciiChar);
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break;
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case ScIsatty:
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if (!DoTrickyIO) {
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// then it's never a tty.
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pReq->d.IoBuf.Len = 0;
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break;
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}
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pReq->d.IoBuf.Len = (_isatty(HandleToLong(pReq->d.IoBuf.Handle)) != 0);
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break;
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case ScIsatty2:
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pReq->d.IoBuf.Len = (_isatty(HandleToLong(pReq->d.IoBuf.Handle)) != 0);
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break;
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case ScOpenFile:
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fd = _open("CONIN$", _O_RDWR);
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_open("CONOUT$", _O_RDWR);
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pReq->d.IoBuf.Handle = (HANDLE)fd;
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break;
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case ScCloseFile:
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#if 0
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//
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// This code causes the keybd thread to fail ReadConsole() with
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// STATUS_INVALID_HANDLE.
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//
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_close((int)pReq->d.IoBuf.Handle);
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#endif
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break;
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default:
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*pStatus = EINVAL;
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}
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return TRUE;
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}
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