reactos/subsys/csrss/api/conio.c

   1 /* $Id: conio.c,v 1.1 1999/12/22 14:48:30 dwelch Exp $
   2  *
   3  * reactos/subsys/csrss/api/conio.c
   4  *
   5  * Console I/O functions
   6  *
   7  * ReactOS Operating System
   8  */
   9
  10 /* INCLUDES ******************************************************************/
  11
  12 #include <ddk/ntddk.h>
  13
  14 #include "csrss.h"
  15 #include "api.h"
  16
  17 /* GLOBALS *******************************************************************/
  18
  19 static HANDLE ConsoleDevice;
  20 static HANDLE KeyboardDevice;
  21
  22 /* FUNCTIONS *****************************************************************/
  23
  24 NTSTATUS CsrWriteConsole(PCSRSS_CONIO_PROCESS ProcessData,
  25                          PCSRSS_REQUEST Message,
  26                          PULONG CharCount)
  27 {
  28    NTSTATUS Status;
  29
  30    if (ProcessData->Console == NULL)
  31      {
  32         return(STATUS_UNSUCCESSFUL);
  33      }
  34
  35    Status = NtWaitForSingleObject(ProcessData->Console->LockMutant,
  36                                   TRUE,
  37                                   NULL);
  38    if (!NT_SUCCESS(Status))
  39      {
  40         return(Status);
  41      }
  42    if (Status == STATUS_ALERTED ||
  43        Status == STATUS_USER_APC)
  44      {
  45         return(Status);
  46      }
  47
  48    if (TopLevel == TRUE)
  49      {
  50         Status = NtReleaseMutant(ProcessData->Console->LockMutant, NULL);
  51         if (!NT_SUCCESS(Status))
  52           {
  53              return(Status);
  54           }
  55
  56         return(Status);
  57      }
  58    else
  59      {
  60         Status = NtReleaseMutant(ProcessData->Console->LockMutant, NULL);
  61         if (!NT_SUCCESS(Status))
  62           {
  63              return(Status);
  64           }
  65
  66         return(Status);
  67      }
  68 }
  69
  70 PCSRSS_CONIO_PROCESS CsrAllocConioProcess(VOID)
  71 {
  72    PCSRSS_CONIO_PROCESS ProcessData;
  73
  74    ThreadData = RtlAllocHeap(NULL, HEAP_ZERO_MEMORY,
  75                              sizeof(PROCESS_CONIO_THREAD));
  76    if (ThreadData == NULL)
  77      {
  78         return(NULL);
  79      }
  80    ProcessData->Console = NULL;
  81    return(ProcessData);
  82 }
  83
  84 VOID CsrFreeConioProcess(PCSRSS_CONIO_PROCESS ProcessData)
  85 {
  86    RtlFreeHeap(NULL, 0, ProcessData);
  87 }
  88
  89
  90
  91 /* EOF */