From f068aa038d09053c5dddea93c5f9576c51993546 Mon Sep 17 00:00:00 2001 From: Star Zeng Date: Sat, 24 Feb 2018 16:02:07 +0800 Subject: [PATCH] MdeModulePkg SmmLockBox: Return updated Length for EFI_BUFFER_TOO_SMALL The updated Length value should be returned for EFI_BUFFER_TOO_SMALL case. Cc: Jiewen Yao Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Star Zeng Reviewed-by: Jiewen Yao --- MdeModulePkg/Universal/LockBox/SmmLockBox/SmmLockBox.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/MdeModulePkg/Universal/LockBox/SmmLockBox/SmmLockBox.c b/MdeModulePkg/Universal/LockBox/SmmLockBox/SmmLockBox.c index 2dc8815f2e..d4183ca4b0 100644 --- a/MdeModulePkg/Universal/LockBox/SmmLockBox/SmmLockBox.c +++ b/MdeModulePkg/Universal/LockBox/SmmLockBox/SmmLockBox.c @@ -9,7 +9,7 @@ SmmLockBoxHandler(), SmmLockBoxRestore(), SmmLockBoxUpdate(), SmmLockBoxSave() will receive untrusted input and do basic validation. -Copyright (c) 2010 - 2017, Intel Corporation. All rights reserved.
+Copyright (c) 2010 - 2018, Intel Corporation. All rights reserved.
This program and the accompanying materials are licensed and made available under the terms and conditions @@ -217,6 +217,9 @@ SmmLockBoxRestore ( (VOID *)(UINTN)TempLockBoxParameterRestore.Buffer, (UINTN *)&TempLockBoxParameterRestore.Length ); + if (Status == EFI_BUFFER_TOO_SMALL) { + LockBoxParameterRestore->Length = TempLockBoxParameterRestore.Length; + } } LockBoxParameterRestore->Header.ReturnStatus = (UINT64)Status; return ; -- 2.39.2