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[LDR] Add initial LOAD_CONFIG support

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Mark Jansen 2020-04-12 16:24:28 +02:00
parent f1e5bc3d74
commit 1e0f359fa7
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GPG key ID: B39240EE84BEAE8B
1 changed files with 32 additions and 3 deletions
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35
dll/ntdll/ldr/ldrinit.c
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@ -1872,11 +1872,40 @@ LdrpInitializeProcess(IN PCONTEXT Context,
HeapParameters.Length = sizeof(HeapParameters);
/* Check if we have Configuration Data */
if ((LoadConfig) && (ConfigSize == sizeof(IMAGE_LOAD_CONFIG_DIRECTORY)))
#define VALID_CONFIG_FIELD(Name) (ConfigSize >= (FIELD_OFFSET(IMAGE_LOAD_CONFIG_DIRECTORY, Name) + sizeof(LoadConfig->Name)))
/* The 'original' load config ends after SecurityCookie */
if ((LoadConfig) && ConfigSize && (VALID_CONFIG_FIELD(SecurityCookie) || ConfigSize == LoadConfig->Size))
{
/* FIXME: Custom heap settings and misc. */
DPRINT1("We don't support LOAD_CONFIG data yet\n");
if (ConfigSize != sizeof(IMAGE_LOAD_CONFIG_DIRECTORY))
DPRINT1("WARN: Accepting different LOAD_CONFIG size!\n");
else
DPRINT1("Applying LOAD_CONFIG\n");
if (VALID_CONFIG_FIELD(GlobalFlagsSet) && LoadConfig->GlobalFlagsSet)
Peb->NtGlobalFlag |= LoadConfig->GlobalFlagsSet;
if (VALID_CONFIG_FIELD(GlobalFlagsClear) && LoadConfig->GlobalFlagsClear)
Peb->NtGlobalFlag &= ~LoadConfig->GlobalFlagsClear;
if (VALID_CONFIG_FIELD(CriticalSectionDefaultTimeout) && LoadConfig->CriticalSectionDefaultTimeout)
RtlpTimeout.QuadPart = Int32x32To64(LoadConfig->CriticalSectionDefaultTimeout, -10000000);
if (VALID_CONFIG_FIELD(DeCommitFreeBlockThreshold) && LoadConfig->DeCommitFreeBlockThreshold)
HeapParameters.DeCommitFreeBlockThreshold = LoadConfig->DeCommitFreeBlockThreshold;
if (VALID_CONFIG_FIELD(DeCommitTotalFreeThreshold) && LoadConfig->DeCommitTotalFreeThreshold)
HeapParameters.DeCommitTotalFreeThreshold = LoadConfig->DeCommitTotalFreeThreshold;
if (VALID_CONFIG_FIELD(MaximumAllocationSize) && LoadConfig->MaximumAllocationSize)
HeapParameters.MaximumAllocationSize = LoadConfig->MaximumAllocationSize;
if (VALID_CONFIG_FIELD(VirtualMemoryThreshold) && LoadConfig->VirtualMemoryThreshold)
HeapParameters.VirtualMemoryThreshold = LoadConfig->VirtualMemoryThreshold;
if (VALID_CONFIG_FIELD(ProcessHeapFlags) && LoadConfig->ProcessHeapFlags)
HeapFlags = LoadConfig->ProcessHeapFlags;
}
#undef VALID_CONFIG_FIELD
/* Check for custom affinity mask */
if (Peb->ImageProcessAffinityMask)