mirror of https://github.com/acidanthera/audk.git
147 lines
4.7 KiB
C
147 lines
4.7 KiB
C
/** @file
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Implementation for EFI iSCSI Initiator Name Protocol.
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Copyright (c) 2004 - 2008, Intel Corporation
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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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Module Name:
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IScsiInitiatorName.c
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Abstract:
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Implementation for EFI iSCSI Initiator Name Protocol.
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**/
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#include "IScsiImpl.h"
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EFI_ISCSI_INITIATOR_NAME_PROTOCOL gIScsiInitiatorName = {
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IScsiGetInitiatorName,
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IScsiSetInitiatorName
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};
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/**
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Retrieves the current set value of iSCSI Initiator Name.
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@param This[in] Pointer to the EFI_ISCSI_INITIATOR_NAME_PROTOCOL instance.
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@param BufferSize[in][out] Size of the buffer in bytes pointed to by Buffer / Actual
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size of the variable data buffer.
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@param Buffer[out] Pointer to the buffer for data to be read.
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@retval EFI_SUCCESS Data was successfully retrieved into the provided
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buffer and the BufferSize was sufficient to handle the
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iSCSI initiator name.
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@retval EFI_BUFFER_TOO_SMALL BufferSize is too small for the result. BufferSize will
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be updated with the size required to complete the request.
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Buffer will not be affected.
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@retval EFI_INVALID_PARAMETER BufferSize is NULL. BufferSize and Buffer will not be
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affected.
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@retval EFI_INVALID_PARAMETER Buffer is NULL. BufferSize and Buffer will not be
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affected.
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@retval EFI_DEVICE_ERROR The iSCSI initiator name could not be retrieved due to
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a hardware error.
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**/
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EFI_STATUS
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EFIAPI
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IScsiGetInitiatorName (
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IN EFI_ISCSI_INITIATOR_NAME_PROTOCOL *This,
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IN OUT UINTN *BufferSize,
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OUT VOID *Buffer
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)
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{
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EFI_STATUS Status;
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if ((BufferSize == NULL) || (Buffer == NULL)) {
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return EFI_INVALID_PARAMETER;
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}
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Status = gRT->GetVariable (
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ISCSI_INITIATOR_NAME_VAR_NAME,
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&gEfiIScsiInitiatorNameProtocolGuid,
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NULL,
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BufferSize,
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Buffer
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);
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return Status;
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}
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/**
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Sets the iSCSI Initiator Name.
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@param This[in] Pointer to the EFI_ISCSI_INITIATOR_NAME_PROTOCOL instance.
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@param BufferSize[in][out] Size of the buffer in bytes pointed to by Buffer.
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@param Buffer[out] Pointer to the buffer for data to be written.
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@retval EFI_SUCCESS Data was successfully stored by the protocol.
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@retval EFI_UNSUPPORTED Platform policies do not allow for data to be written.
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@retval EFI_INVALID_PARAMETER BufferSize exceeds the maximum allowed limit.
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BufferSize will be updated with the maximum size
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required to complete the request.
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@retval EFI_INVALID_PARAMETER Buffersize is NULL. BufferSize and Buffer will not be
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affected.
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@retval EFI_INVALID_PARAMETER Buffer is NULL. BufferSize and Buffer will not be affected.
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@retval EFI_DEVICE_ERROR The data could not be stored due to a hardware error.
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@retval EFI_OUT_OF_RESOURCES Not enough storage is available to hold the data.
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@retval EFI_PROTOCOL_ERROR Input iSCSI initiator name does not adhere to RFC 3720.
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**/
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EFI_STATUS
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EFIAPI
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IScsiSetInitiatorName (
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IN EFI_ISCSI_INITIATOR_NAME_PROTOCOL *This,
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IN OUT UINTN *BufferSize,
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OUT VOID *Buffer
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)
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{
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EFI_STATUS Status;
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if ((BufferSize == NULL) || (Buffer == NULL)) {
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return EFI_INVALID_PARAMETER;
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}
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if (*BufferSize > ISCSI_NAME_MAX_SIZE) {
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*BufferSize = ISCSI_NAME_MAX_SIZE;
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return EFI_INVALID_PARAMETER;
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}
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//
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// only support iqn iSCSI names.
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//
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Status = IScsiNormalizeName ((CHAR8 *) Buffer, *BufferSize - 1);
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if (EFI_ERROR (Status)) {
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return Status;
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}
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Status = gRT->SetVariable (
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ISCSI_INITIATOR_NAME_VAR_NAME,
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&gEfiIScsiInitiatorNameProtocolGuid,
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EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS,
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*BufferSize,
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Buffer
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);
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return Status;
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}
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