Revision: 14005
http://edk2.svn.sourceforge.net/edk2/?rev=14005&view=rev
Author: lzeng14
Date: 2012-12-17 03:18:16 +0000 (Mon, 17 Dec 2012)
Log Message:
-----------
Reclaim work space when the remaining space size is even not enough to contain
one header + one record.
Signed-off-by: Star Zeng <[email protected]>
Reviewed-by: Liming Gao <[email protected]>
Modified Paths:
--------------
trunk/edk2/MdeModulePkg/Universal/FaultTolerantWriteDxe/UpdateWorkingBlock.c
Modified:
trunk/edk2/MdeModulePkg/Universal/FaultTolerantWriteDxe/UpdateWorkingBlock.c
===================================================================
---
trunk/edk2/MdeModulePkg/Universal/FaultTolerantWriteDxe/UpdateWorkingBlock.c
2012-12-17 03:17:36 UTC (rev 14004)
+++
trunk/edk2/MdeModulePkg/Universal/FaultTolerantWriteDxe/UpdateWorkingBlock.c
2012-12-17 03:18:16 UTC (rev 14005)
@@ -166,6 +166,7 @@
{
EFI_STATUS Status;
UINTN Length;
+ UINTN RemainingSpaceSize;
//
// Initialize WorkSpace as FTW_ERASED_BYTE
@@ -198,7 +199,15 @@
FtwDevice->FtwWorkSpaceSize,
&FtwDevice->FtwLastWriteHeader
);
- if (EFI_ERROR (Status)) {
+ RemainingSpaceSize = FtwDevice->FtwWorkSpaceSize - ((UINTN)
FtwDevice->FtwLastWriteHeader - (UINTN) FtwDevice->FtwWorkSpace);
+ DEBUG ((EFI_D_INFO, "Ftw: Remaining work space size - %x\n",
RemainingSpaceSize));
+ //
+ // If FtwGetLastWriteHeader() returns error, or the remaining space size is
even not enough to contain
+ // one EFI_FAULT_TOLERANT_WRITE_HEADER + one
EFI_FAULT_TOLERANT_WRITE_RECORD(It will cause that the header
+ // pointed by FtwDevice->FtwLastWriteHeader or record pointed by
FtwDevice->FtwLastWriteRecord may contain invalid data),
+ // it needs to reclaim work space.
+ //
+ if (EFI_ERROR (Status) || RemainingSpaceSize < sizeof
(EFI_FAULT_TOLERANT_WRITE_HEADER) + sizeof (EFI_FAULT_TOLERANT_WRITE_RECORD)) {
//
// reclaim work space in working block.
//
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------------------------------------------------------------------------------
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