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[NTOSKRNL] Implement ExInitializeRundownProtectionCacheAware()

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This commit is contained in:
Pierre Schweitzer 2018-11-17 15:01:05 +01:00
parent bc77f83888
commit ce94d37dbe
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GPG key ID: 7545556C3D585B0B
1 changed files with 46 additions and 5 deletions
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49
ntoskrnl/ex/rundown.c
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@ -552,16 +552,57 @@ ExFreeCacheAwareRundownProtection(IN PEX_RUNDOWN_REF_CACHE_AWARE RunRefCacheAwar
} }
/* /*
* @unimplemented NT5.2 * @implemented NT5.2
*/ */
VOID VOID
NTAPI NTAPI
ExInitializeRundownProtectionCacheAware(IN PEX_RUNDOWN_REF_CACHE_AWARE RunRefCacheAware, ExInitializeRundownProtectionCacheAware(IN PEX_RUNDOWN_REF_CACHE_AWARE RunRefCacheAware,
IN SIZE_T Count) IN SIZE_T Size)
{ {
DBG_UNREFERENCED_PARAMETER(RunRefCacheAware); PVOID Pool;
DBG_UNREFERENCED_PARAMETER(Count); PEX_RUNDOWN_REF RunRef;
ULONG Count, RunRefSize, Offset;
PAGED_CODE();
/* Get the user allocate pool for runrefs */
Pool = (PVOID)((ULONG_PTR)RunRefCacheAware + sizeof(EX_RUNDOWN_REF_CACHE_AWARE));
/* By default a runref is structure-sized */
RunRefSize = sizeof(EX_RUNDOWN_REF);
/*
* If we just have enough room for a single runref, deduce were on a single
* processor machine
*/
if (Size == sizeof(EX_RUNDOWN_REF_CACHE_AWARE) + sizeof(EX_RUNDOWN_REF))
{
Count = 1;
}
else
{
/* FIXME: Properly align on SMP */
UNIMPLEMENTED; UNIMPLEMENTED;
}
/* Initialize the structure */
RunRefCacheAware->RunRefs = Pool;
RunRefCacheAware->RunRefSize = RunRefSize;
RunRefCacheAware->Number = Count;
/* There is no allocated pool! */
RunRefCacheAware->PoolToFree = (PVOID)0xBADCA11u;
/* Initialize runref */
if (RunRefCacheAware->Number != 0)
{
for (Count = 0; Count < RunRefCacheAware->Number; ++Count)
{
Offset = RunRefCacheAware->RunRefSize * Count;
RunRef = (PEX_RUNDOWN_REF)((ULONG_PTR)RunRefCacheAware->RunRefs + Offset);
RunRef->Count = 0;
}
}
} }
/* /*