ArmPkg/Library/BdsLib/BdsFilePathFs.c

   1 /** @file
   2 *
   3 *  Copyright (c) 2011, ARM Limited. All rights reserved.
   4 *
   5 *  This program and the accompanying materials
   6 *  are licensed and made available under the terms and conditions of the BSD License
   7 *  which accompanies this distribution.  The full text of the license may be found at
   8 *  http://opensource.org/licenses/bsd-license.php
   9 *
  10 *  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  11 *  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  12 *
  13 **/
  14
  15 #include "BdsInternal.h"
  16
  17 EFI_STATUS BdsLoadFileFromSimpleFileSystem(
  18     IN  EFI_HANDLE Handle,
  19     IN  CHAR16                              *FilePath,
  20     OUT BDS_FILE            *File
  21 ) {
  22     EFI_SIMPLE_FILE_SYSTEM_PROTOCOL     *FsProtocol;
  23     EFI_FILE_PROTOCOL                   *Fs;
  24     EFI_STATUS Status;
  25     EFI_FILE_PROTOCOL   *FileHandle = NULL;
  26
  27     if (File == NULL) {
  28         return EFI_INVALID_PARAMETER;
  29     }
  30
  31     Status = gBS->HandleProtocol(Handle,&gEfiSimpleFileSystemProtocolGuid, (VOID **)&FsProtocol);
  32     if (EFI_ERROR(Status)) {
  33         return Status;
  34     }
  35
  36     //Try to Open the volume and get root directory
  37 \s\sStatus = FsProtocol->OpenVolume(FsProtocol, &Fs);
  38 \s\sif (EFI_ERROR(Status)) {
  39         return Status;
  40     }
  41
  42     Status = Fs->Open(Fs, &FileHandle, FilePath, EFI_FILE_MODE_READ, 0);
  43
  44     File->Type = BDS_FILETYPE_FS;
  45     File->FilePath = FilePath;
  46     File->File.Fs.Handle = FileHandle;
  47
  48     return Status;
  49 }
  50
  51 EFI_STATUS BdsCopyRawFileToRuntimeMemoryFS(
  52     IN  EFI_FILE_PROTOCOL   *File,
  53     OUT VOID                **FileImage,
  54     OUT UINTN               *FileSize
  55 ) {
  56     EFI_FILE_INFO   *FileInfo;
  57     UINTN           Size;
  58     VOID*           Image;
  59     EFI_STATUS      Status;
  60
  61     Size = 0;
  62     File->GetInfo(File, &gEfiFileInfoGuid, &Size, NULL);
  63     FileInfo = AllocatePool (Size);
  64     Status = File->GetInfo(File, &gEfiFileInfoGuid, &Size, FileInfo);
  65     if (EFI_ERROR(Status)) {
  66         return Status;
  67     }
  68
  69     // Get the file size
  70     Size = FileInfo->FileSize;
  71     if (FileSize) {
  72         *FileSize = Size;
  73     }
  74     FreePool(FileInfo);
  75
  76     Image = AllocateRuntimePool(Size);
  77     if (Image == NULL) {
  78         return EFI_OUT_OF_RESOURCES;
  79     }
  80
  81     Status = File->Read(File, &Size, Image);
  82     if (!EFI_ERROR(Status)) {
  83         *FileImage = Image;
  84     }
  85     return Status;
  86 }