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Windows: Add new registry flags for SystemFavoritesService to control updating of EFI BIOS boot menu on shutdown. This will help better manage multi-boot scenarios where we should not mess up with boot order (e.g. grub2 case)

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This commit is contained in:
Mounir IDRASSI
2019-11-22 00:08:41 +01:00
parent 55efa6237a
commit 9741c9209d
3 changed files with 46 additions and 23 deletions
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50
src/Common/BootEncryption.cpp
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@@ -1030,7 +1030,7 @@ namespace VeraCrypt
static EfiBoot EfiBootInst;
BootEncryption::BootEncryption (HWND parent, bool postOOBE, bool setBootNext)
BootEncryption::BootEncryption (HWND parent, bool postOOBE, bool setBootEntry, bool forceFirstBootEntry, bool setBootNext)
: DriveConfigValid (false),
ParentWindow (parent),
RealSystemDriveSizeValid (false),
@@ -1042,7 +1042,9 @@ namespace VeraCrypt
SelectedPrfAlgorithmId (0),
VolumeHeaderValid (false),
PostOOBEMode (postOOBE),
SetBootNext (setBootNext)
SetBootNext (setBootNext),
SetBootEntry (setBootEntry),
ForceFirstBootEntry (forceFirstBootEntry)
{
HiddenOSCandidatePartition.IsGPT = FALSE;
HiddenOSCandidatePartition.Number = (size_t) -1;
@@ -2682,7 +2684,7 @@ namespace VeraCrypt
}
}
void EfiBoot::SetStartExec(wstring description, wstring execPath, bool setBootNext, uint16 statrtOrderNum , wchar_t* type, uint32 attr) {
void EfiBoot::SetStartExec(wstring description, wstring execPath, bool setBootEntry, bool forceFirstBootEntry, bool setBootNext, uint16 statrtOrderNum , wchar_t* type, uint32 attr) {
SetPrivilege(SE_SYSTEM_ENVIRONMENT_NAME, TRUE);
// Check EFI
if (!IsEfiBoot()) {
@@ -2799,27 +2801,37 @@ namespace VeraCrypt
}
}
// Create new entry if absent
if (startOrderNumPos == UINT_MAX) {
if (bDeviceInfoValid)
{
for (uint32 i = startOrderLen / 2; i > 0; --i) {
if (setBootEntry)
{
// Create new entry if absent
if (startOrderNumPos == UINT_MAX) {
if (bDeviceInfoValid)
{
if (forceFirstBootEntry)
{
for (uint32 i = startOrderLen / 2; i > 0; --i) {
startOrder[i] = startOrder[i - 1];
}
startOrder[0] = statrtOrderNum;
}
else
{
startOrder[startOrderLen/2] = statrtOrderNum;
}
startOrderLen += 2;
startOrderUpdate = true;
}
} else if ((startOrderNumPos > 0) && forceFirstBootEntry) {
for (uint32 i = startOrderNumPos; i > 0; --i) {
startOrder[i] = startOrder[i - 1];
}
startOrder[0] = statrtOrderNum;
startOrderLen += 2;
startOrderUpdate = true;
}
} else if (startOrderNumPos > 0) {
for (uint32 i = startOrderNumPos; i > 0; --i) {
startOrder[i] = startOrder[i - 1];
}
startOrder[0] = statrtOrderNum;
startOrderUpdate = true;
}
if (startOrderUpdate) {
SetFirmwareEnvironmentVariable(order.c_str(), EfiVarGuid, startOrder, startOrderLen);
if (startOrderUpdate) {
SetFirmwareEnvironmentVariable(order.c_str(), EfiVarGuid, startOrder, startOrderLen);
}
}
if (setBootNext)
@@ -3333,7 +3345,7 @@ namespace VeraCrypt
// restore boot menu entry in case of PostOOBE
if (PostOOBEMode)
EfiBootInst.SetStartExec(L"VeraCrypt BootLoader (DcsBoot)", L"\\EFI\\VeraCrypt\\DcsBoot.efi", SetBootNext);
EfiBootInst.SetStartExec(L"VeraCrypt BootLoader (DcsBoot)", L"\\EFI\\VeraCrypt\\DcsBoot.efi", SetBootEntry, ForceFirstBootEntry, SetBootNext);
if (EfiBootInst.FileExists (L"\\EFI\\Microsoft\\Boot\\bootmgfw_ms.vc"))
{