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/** @file
Implementation for EFI iSCSI Initiator Name Protocol.
Copyright (c) 2004 - 2011, Intel Corporation. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
#include "IScsiImpl.h"
EFI_ISCSI_INITIATOR_NAME_PROTOCOL gIScsiInitiatorName = {
IScsiGetInitiatorName,
IScsiSetInitiatorName
};
/**
Retrieves the current set value of iSCSI Initiator Name.
@param[in] This Pointer to the EFI_ISCSI_INITIATOR_NAME_PROTOCOL
instance.
@param[in, out] BufferSize Size of the buffer in bytes pointed to by Buffer /
Actual size of the variable data buffer.
@param[out] Buffer Pointer to the buffer for data to be read.
The data is a null-terminated UTF-8 encoded string.
The maximum length is 223 characters, including the null-terminator.
@retval EFI_SUCCESS Data was successfully retrieved into the provided
buffer and the BufferSize was sufficient to handle
the iSCSI initiator name.
@retval EFI_BUFFER_TOO_SMALL BufferSize is too small for the result. BufferSize
will be updated with the size required to complete
the request. Buffer will not be affected.
@retval EFI_INVALID_PARAMETER BufferSize is NULL. BufferSize and Buffer will not
be affected.
@retval EFI_INVALID_PARAMETER Buffer is NULL. BufferSize and Buffer will not be
affected.
@retval EFI_DEVICE_ERROR The iSCSI initiator name could not be retrieved
due to a hardware error.
**/
EFI_STATUS
EFIAPI
IScsiGetInitiatorName (
IN EFI_ISCSI_INITIATOR_NAME_PROTOCOL *This,
IN OUT UINTN *BufferSize,
OUT VOID *Buffer
)
{
EFI_STATUS Status;
if ((BufferSize == NULL) || (Buffer == NULL)) {
return EFI_INVALID_PARAMETER;
}
Status = gRT->GetVariable (
ISCSI_INITIATOR_NAME_VAR_NAME,
&gEfiIScsiInitiatorNameProtocolGuid,
NULL,
BufferSize,
Buffer
);
return Status;
}
/**
Sets the iSSI Initiator Name.
@param[in] This Pointer to the EFI_ISCSI_INITIATOR_NAME_PROTOCOL
instance.
@param[in, out] BufferSize Size of the buffer in bytes pointed to by Buffer.
@param[in] Buffer Pointer to the buffer for data to be written.
The data is a null-terminated UTF-8 encoded string.
The maximum length is 223 characters, including the null-terminator.
@retval EFI_SUCCESS Data was successfully stored by the protocol.
@retval EFI_UNSUPPORTED Platform policies do not allow for data to be
written.
@retval EFI_INVALID_PARAMETER BufferSize exceeds the maximum allowed limit.
BufferSize will be updated with the maximum size
required to complete the request.
@retval EFI_INVALID_PARAMETER Buffersize is NULL. BufferSize and Buffer will not
be affected.
@retval EFI_INVALID_PARAMETER Buffer is NULL. BufferSize and Buffer will not be
affected.
@retval EFI_DEVICE_ERROR The data could not be stored due to a hardware
error.
@retval EFI_OUT_OF_RESOURCES Not enough storage is available to hold the data
@retval EFI_PROTOCOL_ERROR Input iSCSI initiator name does not adhere to RFC
3720
**/
EFI_STATUS
EFIAPI
IScsiSetInitiatorName (
IN EFI_ISCSI_INITIATOR_NAME_PROTOCOL *This,
IN OUT UINTN *BufferSize,
IN VOID *Buffer
)
{
EFI_STATUS Status;
if ((BufferSize == NULL) || (Buffer == NULL)) {
return EFI_INVALID_PARAMETER;
}
if (*BufferSize > ISCSI_NAME_MAX_SIZE) {
*BufferSize = ISCSI_NAME_MAX_SIZE;
return EFI_INVALID_PARAMETER;
}
//
// Only support iqn iSCSI names.
//
Status = IScsiNormalizeName ((CHAR8 *)Buffer, *BufferSize - 1);
if (EFI_ERROR (Status)) {
return Status;
}
Status = gRT->SetVariable (
ISCSI_INITIATOR_NAME_VAR_NAME,
&gEfiIScsiInitiatorNameProtocolGuid,
EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS,
*BufferSize,
Buffer
);
return Status;
}
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