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Support FFSv3 sections for both parsing and reconsutrcting.

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This commit is contained in:
Trammell hudson 2017-11-27 13:11:01 -05:00
parent 75225ecc28
commit 8bf0296ca7
Failed to extract signature
2 changed files with 32 additions and 6 deletions
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6
ffs.cpp
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@ -155,10 +155,10 @@ UINT32 sizeOfSectionHeader(const EFI_COMMON_SECTION_HEADER* header)
if (!header) if (!header)
return 0; return 0;
const bool extended = false; bool extended = false;
/*if (uint24ToUint32(header->Size) == EFI_SECTION2_IS_USED) { if (uint24ToUint32(header->Size) == EFI_SECTION2_IS_USED) {
extended = true; extended = true;
}*/ }
switch (header->Type) switch (header->Type)
{ {

30
ffsengine.cpp
View File

@ -989,8 +989,9 @@ UINT8 FfsEngine::parseVolume(const QByteArray & volume, QModelIndex & index, co
// Check for volume structure to be known // Check for volume structure to be known
bool volumeIsUnknown = true; bool volumeIsUnknown = true;
// Check for FFS v2 volume // Check for FFS v2 or v3 volume
if (FFSv2Volumes.contains(QByteArray::fromRawData((const char*)volumeHeader->FileSystemGuid.Data, sizeof(EFI_GUID)))) { if (FFSv2Volumes.contains(QByteArray::fromRawData((const char*)volumeHeader->FileSystemGuid.Data, sizeof(EFI_GUID)))
|| FFSv3Volumes.contains(QByteArray::fromRawData((const char*)volumeHeader->FileSystemGuid.Data, sizeof(EFI_GUID)))) {
volumeIsUnknown = false; volumeIsUnknown = false;
} }
@ -1384,6 +1385,12 @@ UINT8 FfsEngine::getSectionSize(const QByteArray & file, const UINT32 sectionOff
return ERR_INVALID_FILE; return ERR_INVALID_FILE;
const EFI_COMMON_SECTION_HEADER* sectionHeader = (const EFI_COMMON_SECTION_HEADER*)(file.constData() + sectionOffset); const EFI_COMMON_SECTION_HEADER* sectionHeader = (const EFI_COMMON_SECTION_HEADER*)(file.constData() + sectionOffset);
sectionSize = uint24ToUint32(sectionHeader->Size); sectionSize = uint24ToUint32(sectionHeader->Size);
if (sectionSize != 0xFFFFFF)
return ERR_SUCCESS;
// this is a header2 type
const EFI_COMMON_SECTION_HEADER2* sectionHeader2 = (const EFI_COMMON_SECTION_HEADER2*)(file.constData() + sectionOffset);
sectionSize = sectionHeader2->ExtendedSize;
return ERR_SUCCESS; return ERR_SUCCESS;
} }
@ -3577,6 +3584,11 @@ UINT8 FfsEngine::reconstructFile(const QModelIndex& index, const UINT8 revision,
model->action(index) == Actions::Rebuild) { model->action(index) == Actions::Rebuild) {
QByteArray header = model->header(index); QByteArray header = model->header(index);
EFI_FFS_FILE_HEADER* fileHeader = (EFI_FFS_FILE_HEADER*)header.data(); EFI_FFS_FILE_HEADER* fileHeader = (EFI_FFS_FILE_HEADER*)header.data();
if(header.size() >= 0xFFFFFF)
{
msg(tr("reconstructFile: extended header"), index);
return ERR_INVALID_PARAMETER;
}
// Check erase polarity // Check erase polarity
if (erasePolarity == ERASE_POLARITY_UNKNOWN) { if (erasePolarity == ERASE_POLARITY_UNKNOWN) {
@ -3732,6 +3744,12 @@ UINT8 FfsEngine::reconstructSection(const QModelIndex& index, const UINT32 base,
model->action(index) == Actions::Rebase) { model->action(index) == Actions::Rebase) {
QByteArray header = model->header(index); QByteArray header = model->header(index);
EFI_COMMON_SECTION_HEADER* commonHeader = (EFI_COMMON_SECTION_HEADER*)header.data(); EFI_COMMON_SECTION_HEADER* commonHeader = (EFI_COMMON_SECTION_HEADER*)header.data();
bool extended = false;
if(uint24ToUint32(commonHeader->Size) == 0xFFFFFF)
{
extended = true;
}
// Reconstruct section with children // Reconstruct section with children
if (model->rowCount(index)) { if (model->rowCount(index)) {
@ -3832,8 +3850,16 @@ UINT8 FfsEngine::reconstructSection(const QModelIndex& index, const UINT32 base,
} }
// Correct section size // Correct section size
if (extended)
{
EFI_COMMON_SECTION_HEADER2 * extHeader
= (EFI_COMMON_SECTION_HEADER2*) commonHeader;;
extHeader->ExtendedSize = header.size() + reconstructed.size();
uint32ToUint24(0xFFFFFF, commonHeader->Size);
} else {
uint32ToUint24(header.size() + reconstructed.size(), commonHeader->Size); uint32ToUint24(header.size() + reconstructed.size(), commonHeader->Size);
} }
}
// Leaf section // Leaf section
else else
reconstructed = model->body(index); reconstructed = model->body(index);