This usage is wrong.
The PARTITION_PRIVATE_DATA is a hidden private data only referred by Partition
driver internally. It’s not exposed for external user.
From: Nguyễn Văn Hiễn [mailto:nvhien1...@gmail.com]
Sent: Friday, September 05, 2014 11:48
To: edk2-devel@lists.sourceforge.net
Subject: [edk2] Get PARTITION_PRIVATE_DATA from BlockIo.
Hi all,
I'm trying to get PARTITION_PRIVATE_DATA from *BlockIo using
PARTITION_DEVICE_FROM_BLOCK_IO_THIS, then I access to attributes of DiskIo in
PARTITION_PRIVATE_DATA (e.g *->DiskIo->Revision). But a synchronous exception
error will occur if I access it.
//Open BlockIo protocol
Status = gBS->OpenProtocol (
BlockIoHandle,
&gEfiBlockIoProtocolGuid,
(VOID**)&BlockIo, //<=== BlockIo is OK.
gImageHandle,
NULL,
EFI_OPEN_PROTOCOL_GET_PROTOCOL
);
if (EFI_ERROR(Status)) {
ERROR (L"Error on opening gEfiBlockIoProtocolGuid\n");
return Status;
}
PartitionPrivateData = PARTITION_DEVICE_FROM_BLOCK_IO_THIS (BlockIo);
if (PartitionPrivateData != NULL) {
PartitionPrivateData->DiskIo->Revision; //<==== an error occurs in here.
}
Thanks for any help,
Hien
=================
Ho Chi Minh City University of Technology, VN
nvhien1...@gmail.com<mailto:nvhien1...@gmail.com>
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