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[NTOS:MM:X64] Implement MmCreatePageFileMapping and MmDeletePageFileMapping

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This commit is contained in:
Timo Kreuzer 2018-02-10 22:45:45 +01:00
parent 8980850d56
commit 9095dbf5a5
1 changed files with 47 additions and 2 deletions
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49
ntoskrnl/mm/amd64/page.c
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@ -462,7 +462,23 @@ NTAPI
MmDeletePageFileMapping(PEPROCESS Process, PVOID Address,
SWAPENTRY* SwapEntry)
{
UNIMPLEMENTED;
PMMPTE Pte;
Pte = MiGetPteForProcess(Process, Address, FALSE);
if (Pte == NULL)
{
*SwapEntry = 0;
return;
}
if (Pte->u.Trans.Valid || !Pte->u.Trans.Transition)
{
DPRINT1("Pte %x (want not 1 and 0x800)\n", Pte);
KeBugCheck(MEMORY_MANAGEMENT);
}
*SwapEntry = Pte->u.Long >> 1;
MI_ERASE_PTE(Pte);
}
NTSTATUS
@ -471,7 +487,36 @@ MmCreatePageFileMapping(PEPROCESS Process,
PVOID Address,
SWAPENTRY SwapEntry)
{
UNIMPLEMENTED;
PMMPTE Pte;
MMPTE PteValue;
if (Process == NULL && Address < MmSystemRangeStart)
{
DPRINT1("No process\n");
KeBugCheck(MEMORY_MANAGEMENT);
}
if (Process != NULL && Address >= MmSystemRangeStart)
{
DPRINT1("Setting kernel address with process context\n");
KeBugCheck(MEMORY_MANAGEMENT);
}
if (SwapEntry & (1ull << 63))
{
KeBugCheck(MEMORY_MANAGEMENT);
}
/* Allocate a PTE */
Pte = MiGetPteForProcess(Process, Address, TRUE);
if (Pte == NULL)
{
return STATUS_UNSUCCESSFUL;
}
NT_ASSERT(Pte->u.Long == 0);
PteValue.u.Long = SwapEntry << 1;
MI_WRITE_INVALID_PTE(Pte, PteValue);
return STATUS_UNSUCCESSFUL;
}