BdsMisc.c File Reference

#include <Library/BaseMemoryLib.h>
#include <Library/DevicePathLib.h>
#include <Library/DuetBdsLib.h>
#include <Library/MemoryAllocationLib.h>
#include <Library/UefiRuntimeServicesTableLib.h>

Go to the source code of this file.

Functions
VOID *EFIAPI	BdsLibGetVariableAndSize (IN CHAR16 *Name, IN EFI_GUID *VendorGuid, OUT UINTN *VariableSize)
EFI_DEVICE_PATH_PROTOCOL *EFIAPI	BdsLibDelPartMatchInstance (IN EFI_DEVICE_PATH_PROTOCOL *Multi, IN EFI_DEVICE_PATH_PROTOCOL *Single)
BOOLEAN EFIAPI	BdsLibMatchDevicePaths (IN EFI_DEVICE_PATH_PROTOCOL *Multi, IN EFI_DEVICE_PATH_PROTOCOL *Single)

Detailed Description

Misc BDS library function

Copyright (c) 2004 - 2014, Intel Corporation. All rights reserved.
This program and the accompanying materials are licensed and made available under the terms and conditions of the BSD License which accompanies this distribution. The full text of the license may be found at http://opensource.org/licenses/bsd-license.php

THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.

Definition in file BdsMisc.c.

Function Documentation

BdsLibDelPartMatchInstance()

EFI_DEVICE_PATH_PROTOCOL *EFIAPI BdsLibDelPartMatchInstance	(	IN EFI_DEVICE_PATH_PROTOCOL *	Multi,
		IN EFI_DEVICE_PATH_PROTOCOL *	Single )

Delete the instance in Multi which matches partly with Single instance

Parameters

Multi	A pointer to a multi-instance device path data structure.
Single	A pointer to a single-instance device path data structure.

Returns

This function will remove the device path instances in Multi which partly match with the Single, and return the result device path. If there is no remaining device path as a result, this function will return NULL.

Definition at line 93 of file BdsMisc.c.

BdsLibGetVariableAndSize()

VOID *EFIAPI BdsLibGetVariableAndSize	(	IN CHAR16 *	Name,
		IN EFI_GUID *	VendorGuid,
		OUT UINTN *	VariableSize )

Read the EFI variable (VendorGuid/Name) and return a dynamically allocated buffer, and the size of the buffer. If failure return NULL.

Parameters

Name	String part of EFI variable name
VendorGuid	GUID part of EFI variable name
VariableSize	Returns the size of the EFI variable that was read

Returns

Dynamically allocated memory that contains a copy of the EFI variable Caller is responsible freeing the buffer.

Return values

NULL	Variable was not read

Definition at line 36 of file BdsMisc.c.

BdsLibMatchDevicePaths()

BOOLEAN EFIAPI BdsLibMatchDevicePaths	(	IN EFI_DEVICE_PATH_PROTOCOL *	Multi,
		IN EFI_DEVICE_PATH_PROTOCOL *	Single )

Function compares a device path data structure to that of all the nodes of a second device path instance.

Parameters

Multi	A pointer to a multi-instance device path data structure.
Single	A pointer to a single-instance device path data structure.

Return values

TRUE	If the Single device path is contained within Multi device path.
FALSE	The Single device path is not match within Multi device path.

Definition at line 153 of file BdsMisc.c.