reactos/boot/environ/lib/io/fat.c

   1 /*
   2  * COPYRIGHT:       See COPYING.ARM in the top level directory
   3  * PROJECT:         ReactOS UEFI Boot Library
   4  * FILE:            boot/environ/lib/io/fat.c
   5  * PURPOSE:         Boot Library FAT File System Management Routines
   6  * PROGRAMMER:      Alex Ionescu (alex.ionescu@reactos.org)
   7  */
   8
   9 /* INCLUDES ******************************************************************/
  10
  11 #include "bl.h"
  12
  13 /* DATA VARIABLES ************************************************************/
  14
  15 PVOID* FatDeviceTable;
  16 ULONG FatDeviceTableEntries;
  17 PWCHAR FatpLongFileName;
  18
  19 /* FUNCTIONS *****************************************************************/
  20
  21 NTSTATUS
  22 FatMount (
  23     _In_ ULONG DeviceId,
  24     _In_ ULONG Unknown,
  25     _Out_ PBL_FILE_ENTRY* FileEntry
  26     )
  27 {
  28     EfiPrintf(L"FAT Mount on Device %d TODO\r\n", DeviceId);
  29     EfiStall(3000000);
  30     return STATUS_NOT_IMPLEMENTED;
  31 }
  32
  33 NTSTATUS
  34 FatInitialize (
  35     VOID
  36     )
  37 {
  38     NTSTATUS Status;
  39
  40     /* Allocate the device table with 2 entries*/
  41     FatDeviceTableEntries = 2;
  42     FatDeviceTable = BlMmAllocateHeap(sizeof(PBL_FILE_ENTRY) *
  43                                       FatDeviceTableEntries);
  44     if (FatDeviceTable)
  45     {
  46         /* Zero it out */
  47         RtlZeroMemory(FatDeviceTable,
  48                       sizeof(PBL_FILE_ENTRY) * FatDeviceTableEntries);
  49
  50         /* Allocate a 512 byte buffer for long file name conversion */
  51         FatpLongFileName = BlMmAllocateHeap(512);
  52         Status = FatpLongFileName != NULL ? STATUS_SUCCESS : STATUS_NO_MEMORY;
  53     }
  54     else
  55     {
  56         /* No memory, fail */
  57         Status = STATUS_NO_MEMORY;
  58     }
  59
  60     /* Return back to caller */
  61     return Status;
  62 }
  63