rosapps/tests/apc/apc.c

   1 #include <stdarg.h>
   2 #include <string.h>
   3 #include <stdio.h>
   4 #include <windows.h>
   5 #include <ddk/ntddk.h>
   6 #include <rosrtl/string.h>
   7
   8 HANDLE OutputHandle;
   9 HANDLE InputHandle;
  10
  11 VOID STDCALL
  12 ApcRoutine(PVOID Context,
  13            PIO_STATUS_BLOCK IoStatus,
  14            ULONG Reserved)
  15 {
  16    printf("(apc.exe) ApcRoutine(Context %p)\n", Context);
  17 }
  18
  19
  20 int main(int argc, char* argv[])
  21 {
  22    NTSTATUS Status;
  23    HANDLE FileHandle;
  24    OBJECT_ATTRIBUTES ObjectAttributes;
  25    UNICODE_STRING FileName = ROS_STRING_INITIALIZER(L"\\C:\\a.txt");
  26    IO_STATUS_BLOCK IoStatus;
  27    CHAR Buffer[256];
  28    HANDLE EventHandle;
  29    LARGE_INTEGER off;
  30
  31    AllocConsole();
  32    InputHandle = GetStdHandle(STD_INPUT_HANDLE);
  33    OutputHandle =  GetStdHandle(STD_OUTPUT_HANDLE);
  34
  35    printf("APC test program\n");
  36
  37    EventHandle = CreateEventW(NULL,
  38                               FALSE,
  39                               FALSE,
  40                               NULL);
  41    if (EventHandle == INVALID_HANDLE_VALUE)
  42      {
  43         printf("Failed to create event\n");
  44         return 0;
  45      }
  46
  47    printf("Opening file\n");
  48    InitializeObjectAttributes(&ObjectAttributes,
  49                               &FileName,
  50                               0,
  51                               NULL,
  52                               NULL);
  53
  54    printf("Creating file\n");
  55    FileHandle = CreateFileW(L"C:\\a.txt",
  56                             FILE_GENERIC_READ | FILE_GENERIC_WRITE,
  57                             0,
  58                             NULL,
  59                             OPEN_EXISTING,
  60                             FILE_FLAG_OVERLAPPED,
  61                             NULL);
  62
  63    if (FileHandle == INVALID_HANDLE_VALUE)
  64      {
  65
  66   printf("Open failed last err 0x%lu\n",GetLastError());
  67         return 0;
  68      }
  69
  70      off.QuadPart = 0;
  71
  72    printf("Reading file\n");
  73    Status = ZwReadFile(FileHandle,
  74                         NULL,
  75                         (PIO_APC_ROUTINE)ApcRoutine,
  76                         (PVOID) 0xdeadbeef,
  77                         &IoStatus,
  78                         Buffer,
  79                         256,//len
  80                         &off ,//offset must exist if file was opened for asynch. i/o aka. OVERLAPPED
  81                         NULL);
  82
  83    if (!NT_SUCCESS(Status))
  84      {
  85         printf("Read failed status 0x%lu\n",Status);
  86      }
  87    printf("Waiting\n");
  88    WaitForSingleObjectEx(EventHandle, INFINITE, TRUE);
  89    printf("Returned from wait\n");
  90    ZwClose(FileHandle);
  91    printf("Program finished\n");
  92    return 0;
  93 }
  94