drivers/storage/port/buslogic/Log.c

   1 #include "Log.h"
   2 #include <stdarg.h>
   3 #include <stdio.h>
   4 #pragma hdrstop
   5
   6 BOOLEAN LogMessage(PCHAR szFormat, ...)
   7 {
   8         ULONG Length;
   9         char messagebuf[256];
  10         va_list va;
  11     IO_STATUS_BLOCK  IoStatus;
  12         OBJECT_ATTRIBUTES objectAttributes;
  13         NTSTATUS status;
  14         HANDLE FileHandle;
  15     UNICODE_STRING fileName;
  16
  17
  18         //format the string
  19     va_start(va,szFormat);
  20         vsprintf(messagebuf,szFormat,va);
  21         va_end(va);
  22
  23         //get a handle to the log file object
  24     fileName.Buffer = NULL;
  25     fileName.Length = 0;
  26     fileName.MaximumLength = sizeof(DEFAULT_LOG_FILE_NAME) + sizeof(UNICODE_NULL);
  27     fileName.Buffer = ExAllocatePool(PagedPool,
  28                                         fileName.MaximumLength);
  29     if (!fileName.Buffer)
  30     {
  31         return FALSE;
  32     }
  33     RtlZeroMemory(fileName.Buffer, fileName.MaximumLength);
  34     status = RtlAppendUnicodeToString(&fileName, (PWSTR)DEFAULT_LOG_FILE_NAME);
  35
  36         //DbgPrint("\n Initializing Object attributes");
  37
  38         InitializeObjectAttributes (&objectAttributes,
  39                                                                 (PUNICODE_STRING)&fileName,
  40                                                                 OBJ_CASE_INSENSITIVE,
  41                                                                 NULL,
  42                                                                 NULL );
  43
  44         DbgPrint("\n BusLogic - Creating the file");
  45
  46         status = ZwCreateFile(&FileHandle,
  47                                           FILE_APPEND_DATA,
  48                                           &objectAttributes,
  49                                           &IoStatus,
  50                                           0,
  51                                           FILE_ATTRIBUTE_NORMAL,
  52                                           FILE_SHARE_WRITE,
  53                                           FILE_OPEN_IF,
  54                                           FILE_SYNCHRONOUS_IO_NONALERT,
  55                                           NULL,
  56                                           0 );
  57
  58         if(NT_SUCCESS(status))
  59         {
  60                 CHAR buf[300];
  61                 LARGE_INTEGER time;
  62                 KeQuerySystemTime(&time);
  63
  64                 DbgPrint("\n BusLogic - Created the file");
  65
  66                 //put a time stamp on the output message
  67                 sprintf(buf,"%10u-%10u  %s",time.HighPart,time.LowPart,messagebuf);
  68
  69                 //format the string to make sure it appends a newline carrage-return to the
  70                 //end of the string.
  71                 Length=strlen(buf);
  72                 if(buf[Length-1]=='\n')
  73                 {
  74                         buf[Length-1]='\r';
  75                         strcat(buf,"\n");
  76                         Length++;
  77                 }
  78                 else
  79                 {
  80                         strcat(buf,"\r\n");
  81                         Length+=2;
  82                 }
  83
  84                 buf[Length+1] = '\0';
  85                 DbgPrint("\n BusLogic - Writing to the file");
  86                 DbgPrint("\n BusLogic - Buf = %s", buf);
  87
  88                 status = ZwWriteFile(FileHandle,
  89                                   NULL,
  90                                   NULL,
  91                                   NULL,
  92                                   &IoStatus,
  93                                   buf,
  94                                   Length,
  95                                   NULL,
  96                                   NULL );
  97
  98                 ZwClose(FileHandle);
  99         }
 100         if (fileName.Buffer)
 101         ExFreePool (fileName.Buffer);
 102
 103         return STATUS_SUCCESS;
 104 }