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Searching for files starts on an 8 byte aligned boundary after the end of the Extended Header if it exists. 

Signed-off-by: lzeng14
Reviewed-by: lgao4

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@13143 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
lzeng14 2012-03-27 01:57:51 +00:00
parent 6dbd32caf6
commit f95f107c8e
3 changed files with 42 additions and 12 deletions
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24
IntelFrameworkModulePkg/Universal/FirmwareVolume/FwVolDxe/FwVol.c
View File

@ -4,7 +4,7 @@
Layers on top of Firmware Block protocol to produce a file abstraction
of FV based files.
Copyright (c) 2006 - 2011, Intel Corporation. All rights reserved.<BR>
Copyright (c) 2006 - 2012, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials
are licensed and made available under the terms and conditions
@ -194,6 +194,7 @@ FvCheck (
EFI_FVB_ATTRIBUTES_2 FvbAttributes;
EFI_FV_BLOCK_MAP_ENTRY *BlockMap;
EFI_FIRMWARE_VOLUME_HEADER *FwVolHeader;
EFI_FIRMWARE_VOLUME_EXT_HEADER *FwVolExtHeader;
UINT8 *FwCache;
LBA_ENTRY *LbaEntry;
FREE_SPACE_ENTRY *FreeSpaceEntry;
@ -349,14 +350,23 @@ FvCheck (
//
// go through the whole FV cache, check the consistence of the FV
//
Ptr = (UINT8 *) (UINTN) (FvDevice->CachedFv + FvDevice->FwVolHeader->HeaderLength);
TopFvAddress = (UINT8 *) (UINTN) (FvDevice->CachedFv + FvDevice->FwVolHeader->FvLength - 1);
if (FvDevice->FwVolHeader->ExtHeaderOffset != 0) {
//
// Searching for files starts on an 8 byte aligned boundary after the end of the Extended Header if it exists.
//
FwVolExtHeader = (EFI_FIRMWARE_VOLUME_EXT_HEADER *) (UINTN) (FvDevice->CachedFv + FvDevice->FwVolHeader->ExtHeaderOffset);
Ptr = (UINT8 *) FwVolExtHeader + FwVolExtHeader->ExtHeaderSize;
Ptr = (UINT8 *) ALIGN_POINTER (Ptr, 8);
} else {
Ptr = (UINT8 *) (UINTN) (FvDevice->CachedFv + FvDevice->FwVolHeader->HeaderLength);
}
TopFvAddress = (UINT8 *) (UINTN) (FvDevice->CachedFv + FvDevice->FwVolHeader->FvLength);
//
// Build FFS list & Free Space List here
//
while (Ptr <= TopFvAddress) {
TestLength = TopFvAddress - Ptr + 1;
while (Ptr < TopFvAddress) {
TestLength = TopFvAddress - Ptr;
if (TestLength > sizeof (EFI_FFS_FILE_HEADER)) {
TestLength = sizeof (EFI_FFS_FILE_HEADER);
@ -370,7 +380,7 @@ FvCheck (
FreeSize = 0;
do {
TestLength = TopFvAddress - Ptr + 1;
TestLength = TopFvAddress - Ptr;
if (TestLength > sizeof (EFI_FFS_FILE_HEADER)) {
TestLength = sizeof (EFI_FFS_FILE_HEADER);
@ -382,7 +392,7 @@ FvCheck (
FreeSize += TestLength;
Ptr += TestLength;
} while (Ptr <= TopFvAddress);
} while (Ptr < TopFvAddress);
FreeSpaceEntry = AllocateZeroPool (sizeof (FREE_SPACE_ENTRY));
if (FreeSpaceEntry == NULL) {

14
MdeModulePkg/Core/Dxe/FwVol/FwVol.c
View File

@ -294,6 +294,7 @@ FvCheck (
EFI_STATUS Status;
EFI_FIRMWARE_VOLUME_BLOCK_PROTOCOL *Fvb;
EFI_FIRMWARE_VOLUME_HEADER *FwVolHeader;
EFI_FIRMWARE_VOLUME_EXT_HEADER *FwVolExtHeader;
EFI_FVB_ATTRIBUTES_2 FvbAttributes;
EFI_FV_BLOCK_MAP_ENTRY *BlockMap;
FFS_FILE_LIST_ENTRY *FfsFileEntry;
@ -410,7 +411,7 @@ FvCheck (
//
// go through the whole FV cache, check the consistence of the FV.
// Make a linked list off all the Ffs file headers
// Make a linked list of all the Ffs file headers
//
Status = EFI_SUCCESS;
InitializeListHead (&FvDevice->FfsFileListHeader);
@ -418,7 +419,16 @@ FvCheck (
//
// Build FFS list
//
FfsHeader = (EFI_FFS_FILE_HEADER *) FvDevice->CachedFv;
if (FwVolHeader->ExtHeaderOffset != 0) {
//
// Searching for files starts on an 8 byte aligned boundary after the end of the Extended Header if it exists.
//
FwVolExtHeader = (EFI_FIRMWARE_VOLUME_EXT_HEADER *) (FvDevice->CachedFv + (FwVolHeader->ExtHeaderOffset - FwVolHeader->HeaderLength));
FfsHeader = (EFI_FFS_FILE_HEADER *) ((UINT8 *) FwVolExtHeader + FwVolExtHeader->ExtHeaderSize);
FfsHeader = (EFI_FFS_FILE_HEADER *) ALIGN_POINTER (FfsHeader, 8);
} else {
FfsHeader = (EFI_FFS_FILE_HEADER *) (FvDevice->CachedFv);
}
TopFvAddress = FvDevice->EndOfCachedFv;
while ((UINT8 *) FfsHeader < TopFvAddress) {

16
MdeModulePkg/Core/Pei/FwVol/FwVol.c
View File

@ -1,7 +1,7 @@
/** @file
Pei Core Firmware File System service routines.
Copyright (c) 2006 - 2011, Intel Corporation. All rights reserved.<BR>
Copyright (c) 2006 - 2012, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
@ -229,7 +229,8 @@ FindFileEx (
IN OUT EFI_PEI_FV_HANDLE *AprioriFile OPTIONAL
)
{
EFI_FIRMWARE_VOLUME_HEADER *FwVolHeader;
EFI_FIRMWARE_VOLUME_HEADER *FwVolHeader;
EFI_FIRMWARE_VOLUME_EXT_HEADER *FwVolExtHeader;
EFI_FFS_FILE_HEADER **FileHeader;
EFI_FFS_FILE_HEADER *FfsFileHeader;
UINT32 FileLength;
@ -262,7 +263,16 @@ FindFileEx (
// start from the FileHeader.
//
if ((*FileHeader == NULL) || (FileName != NULL)) {
FfsFileHeader = (EFI_FFS_FILE_HEADER *)((UINT8 *)FwVolHeader + FwVolHeader->HeaderLength);
if (FwVolHeader->ExtHeaderOffset != 0) {
//
// Searching for files starts on an 8 byte aligned boundary after the end of the Extended Header if it exists.
//
FwVolExtHeader = (EFI_FIRMWARE_VOLUME_EXT_HEADER *) ((UINT8 *) FwVolHeader + FwVolHeader->ExtHeaderOffset);
FfsFileHeader = (EFI_FFS_FILE_HEADER *) ((UINT8 *) FwVolExtHeader + FwVolExtHeader->ExtHeaderSize);
FfsFileHeader = (EFI_FFS_FILE_HEADER *) ALIGN_POINTER (FfsFileHeader, 8);
} else {
FfsFileHeader = (EFI_FFS_FILE_HEADER *)((UINT8 *) FwVolHeader + FwVolHeader->HeaderLength);
}
} else {
if (IS_FFS_FILE2 (*FileHeader)) {
if (!IsFfs3Fv) {