471 lines
10 KiB
C
471 lines
10 KiB
C
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#include <string.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include "nt.h"
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#include "ntrtl.h"
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#include "nturtl.h"
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#include "ntddser.h"
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#include "windows.h"
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void main(int argc,char *argv[]) {
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HANDLE hFile;
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DCB MyDcb;
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char *MyPort = "COM1";
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DWORD NumberActuallyWritten;
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DWORD NumberToWrite = 1000;
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DWORD UseBaud = 1200;
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DWORD NumberOfDataBits = 8;
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COMMTIMEOUTS To;
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OVERLAPPED WriteOl = {0};
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BOOL WriteDone;
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char Char = 'z';
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int j;
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HANDLE Evt1;
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HANDLE Evt2;
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HANDLE Evt3;
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HANDLE Evt4;
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HANDLE Evt5;
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SERIAL_XOFF_COUNTER Xc1 = {10000,10,'a'};
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SERIAL_XOFF_COUNTER Xc2 = {10000,10,'b'};
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SERIAL_XOFF_COUNTER Xc3 = {10000,10,'c'};
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SERIAL_XOFF_COUNTER Xc4 = {10000,10,'d'};
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SERIAL_XOFF_COUNTER Xc5 = {10000,10,'e'};
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IO_STATUS_BLOCK Iosb1;
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IO_STATUS_BLOCK Iosb2;
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IO_STATUS_BLOCK Iosb3;
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IO_STATUS_BLOCK Iosb4;
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IO_STATUS_BLOCK Iosb5;
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NTSTATUS Status1;
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NTSTATUS Status2;
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NTSTATUS Status3;
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NTSTATUS Status4;
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NTSTATUS Status5;
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UNREFERENCED_PARAMETER(argc);
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UNREFERENCED_PARAMETER(argv);
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if (!(WriteOl.hEvent = CreateEvent(
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NULL,
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FALSE,
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FALSE,
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NULL
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))) {
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printf("Could not create the write event.\n");
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exit(1);
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} else {
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WriteOl.Internal = 0;
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WriteOl.InternalHigh = 0;
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WriteOl.Offset = 0;
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WriteOl.OffsetHigh = 0;
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}
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if ((hFile = CreateFile(
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MyPort,
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GENERIC_READ | GENERIC_WRITE,
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0,
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NULL,
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CREATE_ALWAYS,
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FILE_ATTRIBUTE_NORMAL | FILE_FLAG_OVERLAPPED,
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NULL
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)) == ((HANDLE)-1)) {
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printf("Couldn't open the comm port\n");
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exit(1);
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}
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To.ReadIntervalTimeout = 0;
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To.ReadTotalTimeoutMultiplier = ((1000+(((UseBaud+9)/10)-1))/((UseBaud+9)/10));
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if (!To.ReadTotalTimeoutMultiplier) {
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To.ReadTotalTimeoutMultiplier = 1;
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}
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To.WriteTotalTimeoutMultiplier = ((1000+(((UseBaud+9)/10)-1))/((UseBaud+9)/10));
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if (!To.WriteTotalTimeoutMultiplier) {
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To.WriteTotalTimeoutMultiplier = 1;
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}
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To.ReadTotalTimeoutConstant = 5000;
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To.WriteTotalTimeoutConstant = 5000;
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if (!SetCommTimeouts(
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hFile,
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&To
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)) {
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printf("Couldn't set the timeouts\n");
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exit(1);
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}
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//
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// We've successfully opened the file. Set the state of
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// the comm device. First we get the old values and
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// adjust to our own.
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//
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if (!GetCommState(
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hFile,
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&MyDcb
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)) {
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printf("Couldn't get the comm state: %d\n",GetLastError());
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exit(1);
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}
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MyDcb.BaudRate = UseBaud;
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MyDcb.ByteSize = (BYTE)NumberOfDataBits;
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MyDcb.Parity = NOPARITY;
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MyDcb.StopBits = ONESTOPBIT;
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if (!SetCommState(
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hFile,
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&MyDcb
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)) {
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printf("Couldn't set the comm state.\n");
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exit(1);
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}
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//
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// Create 5 event handles to use to process the
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// vdm ioctls.
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//
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if (!(Evt1 = CreateEvent(NULL,
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FALSE,
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FALSE,
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NULL))) {
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printf("Couldn't create event 1\n");
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exit(1);
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}
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if (!(Evt2 = CreateEvent(NULL,
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FALSE,
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FALSE,
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NULL))) {
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printf("Couldn't create event 2\n");
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exit(1);
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}
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if (!(Evt3 = CreateEvent(NULL,
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FALSE,
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FALSE,
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NULL))) {
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printf("Couldn't create event 3\n");
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exit(1);
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}
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if (!(Evt4 = CreateEvent(NULL,
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FALSE,
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FALSE,
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NULL))) {
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printf("Couldn't create event 4\n");
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exit(1);
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}
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if (!(Evt5 = CreateEvent(NULL,
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FALSE,
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FALSE,
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NULL))) {
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printf("Couldn't create event 5\n");
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exit(1);
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}
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//
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// Start up the vdm ioctl and give it a second to get well
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// established as a counter.
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//
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Status1 = NtDeviceIoControlFile(
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hFile,
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Evt1,
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NULL,
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NULL,
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&Iosb1,
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IOCTL_SERIAL_XOFF_COUNTER,
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&Xc1,
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sizeof(SERIAL_XOFF_COUNTER),
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NULL,
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0
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);
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if ( Status1 != STATUS_PENDING) {
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printf("1: Non pending status: %x\n",Status1);
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exit(1);
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}
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Sleep(1000);
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//
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// Do the second vdm ioctl. Wait one second then test to
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// make sure that the first one is finished by checking
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// its event handle. Then make sure that it was killed
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// because of writes
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//
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Status2 = NtDeviceIoControlFile(
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hFile,
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Evt2,
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NULL,
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NULL,
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&Iosb2,
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IOCTL_SERIAL_XOFF_COUNTER,
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&Xc2,
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sizeof(SERIAL_XOFF_COUNTER),
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NULL,
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0
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);
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if ( Status2 != STATUS_PENDING) {
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printf("2: Non pending status: %x\n",Status1);
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exit(1);
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}
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//
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// Wait up to a second for the first one to be killed.
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//
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if (WaitForSingleObject(Evt1,1000)) {
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printf("Evt1 has not attained a signalled state.\n");
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exit(1);
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}
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if (Iosb1.Status != STATUS_SERIAL_MORE_WRITES) {
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printf("Iosb1 not more writes: %x\n",Iosb1.Status);
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exit(1);
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}
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//
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// Start up an 1 character asynchronous write and wait for a second and
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// the make sure that the previous vdm ioctl is done.
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//
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WriteDone = WriteFile(
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hFile,
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&Char,
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1,
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&NumberActuallyWritten,
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&WriteOl
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);
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if (!WriteDone) {
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DWORD LastError;
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LastError = GetLastError();
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if (LastError != ERROR_IO_PENDING) {
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printf("Couldn't write the %s device.\n",MyPort);
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printf("Status of failed write is: %x\n",LastError);
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exit(1);
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}
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}
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if (WaitForSingleObject(Evt2,1000)) {
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printf("Evt2 has not attained a signalled state.\n");
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exit(1);
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}
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if (Iosb2.Status != STATUS_SERIAL_MORE_WRITES) {
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printf("Iosb2 not more writes: %x\n",Iosb2.Status);
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exit(1);
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}
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//
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// Wait up to 10 seconds for the write to finish.
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//
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if (WaitForSingleObject(WriteOl.hEvent,10000)) {
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printf("The write never finished\n");
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exit(1);
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}
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//
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// Set up a third vdm ioctl as before.
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//
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Status3 = NtDeviceIoControlFile(
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hFile,
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Evt3,
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NULL,
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NULL,
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&Iosb3,
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IOCTL_SERIAL_XOFF_COUNTER,
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&Xc3,
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sizeof(SERIAL_XOFF_COUNTER),
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NULL,
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0
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);
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if ( Status3 != STATUS_PENDING) {
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printf("3: Non pending status: %x\n",Status3);
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exit(1);
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}
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//
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// Set up a fourth vdm ioctl, make sure that the previous ioctl
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// has been killed. Then wait for 15 seconds and then make sure
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// that the fourth vdm ioctl is finished and that it finished
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// due to the timer expiring before the the counter expired
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//
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Status4 = NtDeviceIoControlFile(
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hFile,
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Evt4,
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NULL,
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NULL,
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&Iosb4,
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IOCTL_SERIAL_XOFF_COUNTER,
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&Xc4,
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sizeof(SERIAL_XOFF_COUNTER),
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NULL,
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0
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);
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if ( Status4 != STATUS_PENDING) {
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printf("4: Non pending status: %x\n",Status4);
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exit(1);
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}
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if (WaitForSingleObject(Evt3,1000)) {
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printf("Evt3 has not attained a signalled state.\n");
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exit(1);
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}
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if (Iosb3.Status != STATUS_SERIAL_MORE_WRITES) {
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printf("Iosb3 not more writes: %x\n",Iosb3.Status);
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exit(1);
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}
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//
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// Wait up to one second beyond the countdown timeout.
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//
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printf("Waiting %d seconds for the timer to time out.\n",(Xc4.Timeout+1000)/1000);
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if (WaitForSingleObject(Evt4,Xc4.Timeout+1000)) {
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printf("Evt4 has not attained a signalled state.\n");
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exit(1);
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}
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printf("Done with the timeout.\n");
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if (Iosb4.Status != STATUS_SERIAL_COUNTER_TIMEOUT) {
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printf("Iosb4 not counter timeout: %x\n",Iosb4.Status);
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exit(1);
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}
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//
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// Set up a fifth vdm ioctl, with a counter of ten,
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// then do 15 transmit immediate writes. If a loopback
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// connector is connected to the port then the characters
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// will then be received. This should cause the counter to
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// count down and cause the vdm ioctl to complete with
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// status success.
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//
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// NOTE NOTE: Transmit immediates DO NOT cause vdm ioctls
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// to complete with a status of MORE_WRITES.
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//
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Status5 = NtDeviceIoControlFile(
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hFile,
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Evt5,
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NULL,
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NULL,
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&Iosb5,
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IOCTL_SERIAL_XOFF_COUNTER,
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&Xc5,
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sizeof(SERIAL_XOFF_COUNTER),
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NULL,
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0
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);
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if ( Status5 != STATUS_PENDING) {
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printf("5: Non pending status: %x\n",Status5);
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|
exit(1);
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
for (
|
||
|
|
j = 0;
|
||
|
|
j < Xc5.Counter+5;
|
||
|
|
j++
|
||
|
|
) {
|
||
|
|
|
||
|
|
if (!TransmitCommChar(hFile,'u')) {
|
||
|
|
|
||
|
|
printf("A transmit comm char failed: %d\n",j);
|
||
|
|
exit(1);
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
//
|
||
|
|
// Well we'll give it at least a second.
|
||
|
|
//
|
||
|
|
|
||
|
|
if (WaitForSingleObject(Evt5,1000)) {
|
||
|
|
|
||
|
|
printf("Evt5 has not attained a signalled state.\n");
|
||
|
|
exit(1);
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
if (Iosb5.Status != STATUS_SUCCESS) {
|
||
|
|
|
||
|
|
printf("Iosb5 not SUCCEESS: %x\n",Iosb5.Status);
|
||
|
|
exit(1);
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|