mirror of
https://github.com/reactos/reactos.git
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94 lines
1.9 KiB
C
94 lines
1.9 KiB
C
#include <stdio.h>
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#include <string.h>
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#define WIN32_NO_STATUS
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#include <windows.h>
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#define NTOS_MODE_USER
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#include <ndk/ntndk.h>
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HANDLE OutputHandle;
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HANDLE InputHandle;
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VOID WINAPI
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ApcRoutine(PVOID Context,
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PIO_STATUS_BLOCK IoStatus,
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ULONG Reserved)
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{
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printf("(apc.exe) ApcRoutine(Context %p)\n", Context);
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}
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int main(int argc, char* argv[])
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{
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NTSTATUS Status;
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HANDLE FileHandle;
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OBJECT_ATTRIBUTES ObjectAttributes;
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UNICODE_STRING FileName = RTL_CONSTANT_STRING(L"\\C:\\a.txt");
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IO_STATUS_BLOCK IoStatus;
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CHAR Buffer[256];
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HANDLE EventHandle;
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LARGE_INTEGER off;
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AllocConsole();
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InputHandle = GetStdHandle(STD_INPUT_HANDLE);
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OutputHandle = GetStdHandle(STD_OUTPUT_HANDLE);
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printf("APC test program\n");
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EventHandle = CreateEventW(NULL,
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FALSE,
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FALSE,
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NULL);
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if (EventHandle == INVALID_HANDLE_VALUE)
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{
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printf("Failed to create event\n");
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return 0;
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}
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printf("Opening file\n");
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InitializeObjectAttributes(&ObjectAttributes,
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&FileName,
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0,
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NULL,
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NULL);
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printf("Creating file\n");
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FileHandle = CreateFileW(L"C:\\a.txt",
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FILE_GENERIC_READ | FILE_GENERIC_WRITE,
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0,
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NULL,
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OPEN_EXISTING,
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FILE_FLAG_OVERLAPPED,
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NULL);
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if (FileHandle == INVALID_HANDLE_VALUE)
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{
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printf("Open failed last err 0x%lu\n",GetLastError());
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return 0;
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}
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off.QuadPart = 0;
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printf("Reading file\n");
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Status = ZwReadFile(FileHandle,
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NULL,
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(PIO_APC_ROUTINE)ApcRoutine,
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(PVOID) 0xdeadbeef,
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&IoStatus,
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Buffer,
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256,//len
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&off ,//offset must exist if file was opened for asynch. i/o aka. OVERLAPPED
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NULL);
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if (!NT_SUCCESS(Status))
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{
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printf("Read failed status 0x%lu\n",Status);
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}
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printf("Waiting\n");
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WaitForSingleObjectEx(EventHandle, INFINITE, TRUE);
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printf("Returned from wait\n");
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ZwClose(FileHandle);
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printf("Program finished\n");
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return 0;
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}
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