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sys: IRP_MJ_QUERY_SECURITY

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This commit is contained in:
Bill Zissimopoulos
2016-02-18 15:54:52 -08:00
parent 3cfdfba64c
commit e7cef94507
6 changed files with 218 additions and 12 deletions
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15
src/sys/meta.c
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@ -148,12 +148,14 @@ VOID FspMetaCacheInvalidateExpired(FSP_META_CACHE *MetaCache, UINT64 ExpirationT
}
}
PVOID FspMetaCacheReferenceItemBuffer(FSP_META_CACHE *MetaCache, UINT64 ItemIndex, PULONG PSize)
BOOLEAN FspMetaCacheReferenceItemBuffer(FSP_META_CACHE *MetaCache, UINT64 ItemIndex,
PCVOID *PBuffer, PULONG PSize)
{
*PBuffer = 0;
if (0 != PSize)
*PSize = 0;
if (0 == MetaCache || 0 == ItemIndex)
return 0;
return FALSE;
FSP_META_CACHE_ITEM *Item = 0;
FSP_META_CACHE_ITEM_BUFFER *ItemBuffer;
KIRQL Irql;
@ -162,23 +164,24 @@ PVOID FspMetaCacheReferenceItemBuffer(FSP_META_CACHE *MetaCache, UINT64 ItemInde
if (0 == Item)
{
KeReleaseSpinLock(&MetaCache->SpinLock, Irql);
return 0;
return FALSE;
}
InterlockedIncrement(&Item->RefCount);
KeReleaseSpinLock(&MetaCache->SpinLock, Irql);
ItemBuffer = Item->ItemBuffer;
*PBuffer = ItemBuffer->Buffer;
if (0 != PSize)
*PSize = ItemBuffer->Size;
return ItemBuffer->Buffer;
return TRUE;
}
VOID FspMetaCacheDereferenceItemBuffer(PVOID Buffer)
VOID FspMetaCacheDereferenceItemBuffer(PCVOID Buffer)
{
FSP_META_CACHE_ITEM_BUFFER *ItemBuffer = (PVOID)((PUINT8)Buffer - sizeof *ItemBuffer);
FspMetaCacheDereferenceItem(ItemBuffer->Item);
}
UINT64 FspMetaCacheAddItem(FSP_META_CACHE *MetaCache, PVOID Buffer, ULONG Size)
UINT64 FspMetaCacheAddItem(FSP_META_CACHE *MetaCache, PCVOID Buffer, ULONG Size)
{
if (0 == MetaCache)
return 0;