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This library provides an interface where variables can be saved and restored using a file in a file system accessible to the firmware. It is expected that a platform BDS library will use this library. The platform BDS implementation can decide which devices to connect and then to attempt to use for saving and restoring NV variables. git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@9272 6f19259b-4bc3-4df7-8a09-765794883524
54 lines
1.4 KiB
C
54 lines
1.4 KiB
C
/** @file
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Save Non-Volatile Variables to a file system.
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Copyright (c) 2009, Intel Corporation. <BR>
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All rights reserved. This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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**/
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#include "NvVarsFileLib.h"
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#include <Library/DebugLib.h>
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#include <Library/NvVarsFileLib.h>
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/**
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Attempts to connect the NvVarsFileLib to the specified file system.
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@param[in] FsHandle - Handle for a gEfiSimpleFileSystemProtocolGuid instance
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@return The EFI_STATUS while attempting to connect the NvVarsFileLib
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to the file system instance.
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@retval EFI_SUCCESS - The given file system was connected successfully
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**/
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EFI_STATUS
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EFIAPI
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ConnectNvVarsToFileSystem (
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IN EFI_HANDLE FsHandle
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)
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{
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EFI_STATUS Status;
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//
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// We might fail to load the variable, since the file system initially
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// will not have the NvVars file.
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//
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LoadNvVarsFromFs (FsHandle);
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//
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// We must be able to save the variables successfully to the file system
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// to have connected successfully.
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//
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Status = SaveNvVarsToFs (FsHandle);
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return Status;
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}
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