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reactos/ntoskrnl/mm/ARM3/procsup.c
Jérôme Gardou 34662e2f6f [NTOS:MM] Copy the WorkingSet page when initializing "hand-built" process 
CORE-17642
2021-08-04 11:49:38 +02:00

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/*
* PROJECT: ReactOS Kernel
* LICENSE: BSD - See COPYING.ARM in the top level directory
* FILE: ntoskrnl/mm/ARM3/procsup.c
* PURPOSE: ARM Memory Manager Process Related Management
* PROGRAMMERS: ReactOS Portable Systems Group
*/
/* INCLUDES *******************************************************************/
#include <ntoskrnl.h>
#define NDEBUG
#include <debug.h>
#define MODULE_INVOLVED_IN_ARM3
#include <mm/ARM3/miarm.h>
/* GLOBALS ********************************************************************/
ULONG MmProcessColorSeed = 0x12345678;
ULONG MmMaximumDeadKernelStacks = 5;
SLIST_HEADER MmDeadStackSListHead;
/* PRIVATE FUNCTIONS **********************************************************/
NTSTATUS
NTAPI
MiCreatePebOrTeb(IN PEPROCESS Process,
IN ULONG Size,
OUT PULONG_PTR BaseAddress)
{
PMMVAD_LONG Vad;
NTSTATUS Status;
ULONG_PTR HighestAddress, RandomBase;
ULONG AlignedSize;
LARGE_INTEGER CurrentTime;
/* Allocate a VAD */
Vad = ExAllocatePoolWithTag(NonPagedPool, sizeof(MMVAD_LONG), 'ldaV');
if (!Vad) return STATUS_NO_MEMORY;
/* Setup the primary flags with the size, and make it commited, private, RW */
Vad->u.LongFlags = 0;
Vad->u.VadFlags.CommitCharge = BYTES_TO_PAGES(Size);
Vad->u.VadFlags.MemCommit = TRUE;
Vad->u.VadFlags.PrivateMemory = TRUE;
Vad->u.VadFlags.Protection = MM_READWRITE;
Vad->u.VadFlags.NoChange = TRUE;
Vad->u1.Parent = NULL;
/* Setup the secondary flags to make it a secured, writable, long VAD */
Vad->u2.LongFlags2 = 0;
Vad->u2.VadFlags2.OneSecured = TRUE;
Vad->u2.VadFlags2.LongVad = TRUE;
Vad->u2.VadFlags2.ReadOnly = FALSE;
Vad->ControlArea = NULL; // For Memory-Area hack
Vad->FirstPrototypePte = NULL;
/* Check if this is a PEB creation */
ASSERT(sizeof(TEB) != sizeof(PEB));
if (Size == sizeof(PEB))
{
/* Create a random value to select one page in a 64k region */
KeQueryTickCount(&CurrentTime);
CurrentTime.LowPart &= (_64K / PAGE_SIZE) - 1;
/* Calculate a random base address */
RandomBase = (ULONG_PTR)MM_HIGHEST_VAD_ADDRESS + 1;
RandomBase -= CurrentTime.LowPart << PAGE_SHIFT;
/* Make sure the base address is not too high */
AlignedSize = ROUND_TO_PAGES(Size);
if ((RandomBase + AlignedSize) > (ULONG_PTR)MM_HIGHEST_VAD_ADDRESS + 1)
{
RandomBase = (ULONG_PTR)MM_HIGHEST_VAD_ADDRESS + 1 - AlignedSize;
}
/* Calculate the highest allowed address */
HighestAddress = RandomBase + AlignedSize - 1;
}
else
{
HighestAddress = (ULONG_PTR)MM_HIGHEST_VAD_ADDRESS;
}
*BaseAddress = 0;
Status = MiInsertVadEx((PMMVAD)Vad,
BaseAddress,
Size,
HighestAddress,
PAGE_SIZE,
MEM_TOP_DOWN);
if (!NT_SUCCESS(Status))
{
ExFreePoolWithTag(Vad, 'ldaV');
return STATUS_NO_MEMORY;
}
/* Success */
return STATUS_SUCCESS;
}
VOID
NTAPI
MmDeleteTeb(IN PEPROCESS Process,
IN PTEB Teb)
{
ULONG_PTR TebEnd;
PETHREAD Thread = PsGetCurrentThread();
PMMVAD Vad;
PMM_AVL_TABLE VadTree = &Process->VadRoot;
DPRINT("Deleting TEB: %p in %16s\n", Teb, Process->ImageFileName);
/* TEB is one page */
TebEnd = (ULONG_PTR)Teb + ROUND_TO_PAGES(sizeof(TEB)) - 1;
/* Attach to the process */
KeAttachProcess(&Process->Pcb);
/* Lock the process address space */
KeAcquireGuardedMutex(&Process->AddressCreationLock);
/* Find the VAD, make sure it's a TEB VAD */
Vad = MiLocateAddress(Teb);
DPRINT("Removing node for VAD: %lx %lx\n", Vad->StartingVpn, Vad->EndingVpn);
ASSERT(Vad != NULL);
if (Vad->StartingVpn != ((ULONG_PTR)Teb >> PAGE_SHIFT))
{
/* Bug in the AVL code? */
DPRINT1("Corrupted VAD!\n");
}
else
{
/* Sanity checks for a valid TEB VAD */
ASSERT((Vad->StartingVpn == ((ULONG_PTR)Teb >> PAGE_SHIFT) &&
(Vad->EndingVpn == (TebEnd >> PAGE_SHIFT))));
ASSERT(Vad->u.VadFlags.NoChange == TRUE);
ASSERT(Vad->u2.VadFlags2.OneSecured == TRUE);
ASSERT(Vad->u2.VadFlags2.MultipleSecured == FALSE);
/* Lock the working set */
MiLockProcessWorkingSetUnsafe(Process, Thread);
/* Remove this VAD from the tree */
ASSERT(VadTree->NumberGenericTableElements >= 1);
MiRemoveNode((PMMADDRESS_NODE)Vad, VadTree);
/* Delete the pages */
MiDeleteVirtualAddresses((ULONG_PTR)Teb, TebEnd, NULL);
/* Release the working set */
MiUnlockProcessWorkingSetUnsafe(Process, Thread);
/* Remove the VAD */
ExFreePool(Vad);
}
/* Release the address space lock */
KeReleaseGuardedMutex(&Process->AddressCreationLock);
/* Detach */
KeDetachProcess();
}
VOID
NTAPI
MmDeleteKernelStack(IN PVOID StackBase,
IN BOOLEAN GuiStack)
{
PMMPTE PointerPte;
PFN_NUMBER PageFrameNumber, PageTableFrameNumber;
PFN_COUNT StackPages;
PMMPFN Pfn1, Pfn2;
ULONG i;
KIRQL OldIrql;
PSLIST_ENTRY SListEntry;
//
// This should be the guard page, so decrement by one
//
PointerPte = MiAddressToPte(StackBase);
PointerPte--;
//
// If this is a small stack, just push the stack onto the dead stack S-LIST
//
if (!GuiStack)
{
if (ExQueryDepthSList(&MmDeadStackSListHead) < MmMaximumDeadKernelStacks)
{
SListEntry = ((PSLIST_ENTRY)StackBase) - 1;
InterlockedPushEntrySList(&MmDeadStackSListHead, SListEntry);
return;
}
}
//
// Calculate pages used
//
StackPages = BYTES_TO_PAGES(GuiStack ?
MmLargeStackSize : KERNEL_STACK_SIZE);
/* Acquire the PFN lock */
OldIrql = MiAcquirePfnLock();
//
// Loop them
//
for (i = 0; i < StackPages; i++)
{
//
// Check if this is a valid PTE
//
if (PointerPte->u.Hard.Valid == 1)
{
/* Get the PTE's page */
PageFrameNumber = PFN_FROM_PTE(PointerPte);
Pfn1 = MiGetPfnEntry(PageFrameNumber);
/* Now get the page of the page table mapping it */
PageTableFrameNumber = Pfn1->u4.PteFrame;
Pfn2 = MiGetPfnEntry(PageTableFrameNumber);
/* Remove a shared reference, since the page is going away */
MiDecrementShareCount(Pfn2, PageTableFrameNumber);
/* Set the special pending delete marker */
MI_SET_PFN_DELETED(Pfn1);
/* And now delete the actual stack page */
MiDecrementShareCount(Pfn1, PageFrameNumber);
}
//
// Next one
//
PointerPte--;
}
//
// We should be at the guard page now
//
ASSERT(PointerPte->u.Hard.Valid == 0);
/* Release the PFN lock */
MiReleasePfnLock(OldIrql);
//
// Release the PTEs
//
MiReleaseSystemPtes(PointerPte, StackPages + 1, SystemPteSpace);
}
PVOID
NTAPI
MmCreateKernelStack(IN BOOLEAN GuiStack,
IN UCHAR Node)
{
PFN_COUNT StackPtes, StackPages;
PMMPTE PointerPte, StackPte;
PVOID BaseAddress;
MMPTE TempPte, InvalidPte;
KIRQL OldIrql;
PFN_NUMBER PageFrameIndex;
ULONG i;
PSLIST_ENTRY SListEntry;
//
// Calculate pages needed
//
if (GuiStack)
{
//
// We'll allocate 64KB stack, but only commit 12K
//
StackPtes = BYTES_TO_PAGES(MmLargeStackSize);
StackPages = BYTES_TO_PAGES(KERNEL_LARGE_STACK_COMMIT);
}
else
{
//
// If the dead stack S-LIST has a stack on it, use it instead of allocating
// new system PTEs for this stack
//
if (ExQueryDepthSList(&MmDeadStackSListHead))
{
SListEntry = InterlockedPopEntrySList(&MmDeadStackSListHead);
if (SListEntry != NULL)
{
BaseAddress = (SListEntry + 1);
return BaseAddress;
}
}
//
// We'll allocate 12K and that's it
//
StackPtes = BYTES_TO_PAGES(KERNEL_STACK_SIZE);
StackPages = StackPtes;
}
//
// Reserve stack pages, plus a guard page
//
StackPte = MiReserveSystemPtes(StackPtes + 1, SystemPteSpace);
if (!StackPte) return NULL;
//
// Get the stack address
//
BaseAddress = MiPteToAddress(StackPte + StackPtes + 1);
//
// Select the right PTE address where we actually start committing pages
//
PointerPte = StackPte;
if (GuiStack) PointerPte += BYTES_TO_PAGES(MmLargeStackSize -
KERNEL_LARGE_STACK_COMMIT);
/* Setup the temporary invalid PTE */
MI_MAKE_SOFTWARE_PTE(&InvalidPte, MM_NOACCESS);
/* Setup the template stack PTE */
MI_MAKE_HARDWARE_PTE_KERNEL(&TempPte, PointerPte + 1, MM_READWRITE, 0);
//
// Acquire the PFN DB lock
//
OldIrql = MiAcquirePfnLock();
//
// Loop each stack page
//
for (i = 0; i < StackPages; i++)
{
//
// Next PTE
//
PointerPte++;
/* Get a page and write the current invalid PTE */
MI_SET_USAGE(MI_USAGE_KERNEL_STACK);
MI_SET_PROCESS2(PsGetCurrentProcess()->ImageFileName);
PageFrameIndex = MiRemoveAnyPage(MI_GET_NEXT_COLOR());
MI_WRITE_INVALID_PTE(PointerPte, InvalidPte);
/* Initialize the PFN entry for this page */
MiInitializePfn(PageFrameIndex, PointerPte, 1);
/* Write the valid PTE */
TempPte.u.Hard.PageFrameNumber = PageFrameIndex;
MI_WRITE_VALID_PTE(PointerPte, TempPte);
}
//
// Release the PFN lock
//
MiReleasePfnLock(OldIrql);
//
// Return the stack address
//
return BaseAddress;
}
NTSTATUS
NTAPI
MmGrowKernelStackEx(IN PVOID StackPointer,
IN ULONG GrowSize)
{
PKTHREAD Thread = KeGetCurrentThread();
PMMPTE LimitPte, NewLimitPte, LastPte;
KIRQL OldIrql;
MMPTE TempPte, InvalidPte;
PFN_NUMBER PageFrameIndex;
//
// Make sure the stack did not overflow
//
ASSERT(((ULONG_PTR)Thread->StackBase - (ULONG_PTR)Thread->StackLimit) <=
(MmLargeStackSize + PAGE_SIZE));
//
// Get the current stack limit
//
LimitPte = MiAddressToPte(Thread->StackLimit);
ASSERT(LimitPte->u.Hard.Valid == 1);
//
// Get the new one and make sure this isn't a retarded request
//
NewLimitPte = MiAddressToPte((PVOID)((ULONG_PTR)StackPointer - GrowSize));
if (NewLimitPte == LimitPte) return STATUS_SUCCESS;
//
// Now make sure you're not going past the reserved space
//
LastPte = MiAddressToPte((PVOID)((ULONG_PTR)Thread->StackBase -
MmLargeStackSize));
if (NewLimitPte < LastPte)
{
//
// Sorry!
//
return STATUS_STACK_OVERFLOW;
}
//
// Calculate the number of new pages
//
LimitPte--;
/* Setup the temporary invalid PTE */
MI_MAKE_SOFTWARE_PTE(&InvalidPte, MM_NOACCESS);
//
// Acquire the PFN DB lock
//
OldIrql = MiAcquirePfnLock();
//
// Loop each stack page
//
while (LimitPte >= NewLimitPte)
{
/* Get a page and write the current invalid PTE */
MI_SET_USAGE(MI_USAGE_KERNEL_STACK_EXPANSION);
MI_SET_PROCESS2(PsGetCurrentProcess()->ImageFileName);
PageFrameIndex = MiRemoveAnyPage(MI_GET_NEXT_COLOR());
MI_WRITE_INVALID_PTE(LimitPte, InvalidPte);
/* Initialize the PFN entry for this page */
MiInitializePfn(PageFrameIndex, LimitPte, 1);
/* Setup the template stack PTE */
MI_MAKE_HARDWARE_PTE_KERNEL(&TempPte, LimitPte, MM_READWRITE, PageFrameIndex);
/* Write the valid PTE */
MI_WRITE_VALID_PTE(LimitPte--, TempPte);
}
//
// Release the PFN lock
//
MiReleasePfnLock(OldIrql);
//
// Set the new limit
//
Thread->StackLimit = (ULONG_PTR)MiPteToAddress(NewLimitPte);
return STATUS_SUCCESS;
}
NTSTATUS
NTAPI
MmGrowKernelStack(IN PVOID StackPointer)
{
//
// Call the extended version
//
return MmGrowKernelStackEx(StackPointer, KERNEL_LARGE_STACK_COMMIT);
}
NTSTATUS
NTAPI
MmSetMemoryPriorityProcess(IN PEPROCESS Process,
IN UCHAR MemoryPriority)
{
UCHAR OldPriority;
//
// Check if we have less then 16MB of Physical Memory
//
if ((MmSystemSize == MmSmallSystem) &&
(MmNumberOfPhysicalPages < ((15 * 1024 * 1024) / PAGE_SIZE)))
{
//
// Always use background priority
//
MemoryPriority = MEMORY_PRIORITY_BACKGROUND;
}
//
// Save the old priority and update it
//
OldPriority = (UCHAR)Process->Vm.Flags.MemoryPriority;
Process->Vm.Flags.MemoryPriority = MemoryPriority;
//
// Return the old priority
//
return OldPriority;
}
NTSTATUS
NTAPI
MmCreatePeb(IN PEPROCESS Process,
IN PINITIAL_PEB InitialPeb,
OUT PPEB *BasePeb)
{
PPEB Peb = NULL;
LARGE_INTEGER SectionOffset;
SIZE_T ViewSize = 0;
PVOID TableBase = NULL;
PIMAGE_NT_HEADERS NtHeaders;
PIMAGE_LOAD_CONFIG_DIRECTORY ImageConfigData;
NTSTATUS Status;
USHORT Characteristics;
KAFFINITY ProcessAffinityMask = 0;
SectionOffset.QuadPart = (ULONGLONG)0;
*BasePeb = NULL;
//
// Attach to Process
//
KeAttachProcess(&Process->Pcb);
//
// Map NLS Tables
//
Status = MmMapViewOfSection(ExpNlsSectionPointer,
(PEPROCESS)Process,
&TableBase,
0,
0,
&SectionOffset,
&ViewSize,
ViewShare,
MEM_TOP_DOWN,
PAGE_READONLY);
DPRINT("NLS Tables at: %p\n", TableBase);
if (!NT_SUCCESS(Status))
{
/* Cleanup and exit */
KeDetachProcess();
return Status;
}
//
// Allocate the PEB
//
Status = MiCreatePebOrTeb(Process, sizeof(PEB), (PULONG_PTR)&Peb);
DPRINT("PEB at: %p\n", Peb);
if (!NT_SUCCESS(Status))
{
/* Cleanup and exit */
KeDetachProcess();
return Status;
}
//
// Use SEH in case we can't load the PEB
//
_SEH2_TRY
{
//
// Initialize the PEB
//
RtlZeroMemory(Peb, sizeof(PEB));
//
// Set up data
//
Peb->ImageBaseAddress = Process->SectionBaseAddress;
Peb->InheritedAddressSpace = InitialPeb->InheritedAddressSpace;
Peb->Mutant = InitialPeb->Mutant;
Peb->ImageUsesLargePages = InitialPeb->ImageUsesLargePages;
//
// NLS
//
Peb->AnsiCodePageData = (PCHAR)TableBase + ExpAnsiCodePageDataOffset;
Peb->OemCodePageData = (PCHAR)TableBase + ExpOemCodePageDataOffset;
Peb->UnicodeCaseTableData = (PCHAR)TableBase + ExpUnicodeCaseTableDataOffset;
//
// Default Version Data (could get changed below)
//
Peb->OSMajorVersion = NtMajorVersion;
Peb->OSMinorVersion = NtMinorVersion;
Peb->OSBuildNumber = (USHORT)(NtBuildNumber & 0x3FFF);
Peb->OSPlatformId = VER_PLATFORM_WIN32_NT;
Peb->OSCSDVersion = (USHORT)CmNtCSDVersion;
//
// Heap and Debug Data
//
Peb->NumberOfProcessors = KeNumberProcessors;
Peb->BeingDebugged = (BOOLEAN)(Process->DebugPort != NULL);
Peb->NtGlobalFlag = NtGlobalFlag;
Peb->HeapSegmentReserve = MmHeapSegmentReserve;
Peb->HeapSegmentCommit = MmHeapSegmentCommit;
Peb->HeapDeCommitTotalFreeThreshold = MmHeapDeCommitTotalFreeThreshold;
Peb->HeapDeCommitFreeBlockThreshold = MmHeapDeCommitFreeBlockThreshold;
Peb->CriticalSectionTimeout = MmCriticalSectionTimeout;
Peb->MinimumStackCommit = MmMinimumStackCommitInBytes;
Peb->MaximumNumberOfHeaps = (PAGE_SIZE - sizeof(PEB)) / sizeof(PVOID);
Peb->ProcessHeaps = (PVOID*)(Peb + 1);
//
// Session ID
//
if (Process->Session) Peb->SessionId = MmGetSessionId(Process);
}
_SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
{
//
// Fail
//
KeDetachProcess();
_SEH2_YIELD(return _SEH2_GetExceptionCode());
}
_SEH2_END;
//
// Use SEH in case we can't load the image
//
_SEH2_TRY
{
//
// Get NT Headers
//
NtHeaders = RtlImageNtHeader(Peb->ImageBaseAddress);
Characteristics = NtHeaders->FileHeader.Characteristics;
}
_SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
{
//
// Fail
//
KeDetachProcess();
_SEH2_YIELD(return STATUS_INVALID_IMAGE_PROTECT);
}
_SEH2_END;
//
// Parse the headers
//
if (NtHeaders)
{
//
// Use SEH in case we can't load the headers
//
_SEH2_TRY
{
//
// Get the Image Config Data too
//
ImageConfigData = RtlImageDirectoryEntryToData(Peb->ImageBaseAddress,
TRUE,
IMAGE_DIRECTORY_ENTRY_LOAD_CONFIG,
(PULONG)&ViewSize);
if (ImageConfigData)
{
//
// Probe it
//
ProbeForRead(ImageConfigData,
sizeof(IMAGE_LOAD_CONFIG_DIRECTORY),
sizeof(ULONG));
}
//
// Write subsystem data
//
Peb->ImageSubsystem = NtHeaders->OptionalHeader.Subsystem;
Peb->ImageSubsystemMajorVersion = NtHeaders->OptionalHeader.MajorSubsystemVersion;
Peb->ImageSubsystemMinorVersion = NtHeaders->OptionalHeader.MinorSubsystemVersion;
//
// Check for version data
//
if (NtHeaders->OptionalHeader.Win32VersionValue)
{
//
// Extract values and write them
//
Peb->OSMajorVersion = NtHeaders->OptionalHeader.Win32VersionValue & 0xFF;
Peb->OSMinorVersion = (NtHeaders->OptionalHeader.Win32VersionValue >> 8) & 0xFF;
Peb->OSBuildNumber = (NtHeaders->OptionalHeader.Win32VersionValue >> 16) & 0x3FFF;
Peb->OSPlatformId = (NtHeaders->OptionalHeader.Win32VersionValue >> 30) ^ 2;
/* Process CSD version override */
if ((ImageConfigData) && (ImageConfigData->CSDVersion))
{
/* Take the value from the image configuration directory */
Peb->OSCSDVersion = ImageConfigData->CSDVersion;
}
}
/* Process optional process affinity mask override */
if ((ImageConfigData) && (ImageConfigData->ProcessAffinityMask))
{
/* Take the value from the image configuration directory */
ProcessAffinityMask = ImageConfigData->ProcessAffinityMask;
}
//
// Check if this is a UP image
if (Characteristics & IMAGE_FILE_UP_SYSTEM_ONLY)
{
//
// Force it to use CPU 0
//
/* FIXME: this should use the MmRotatingUniprocessorNumber */
Peb->ImageProcessAffinityMask = 0;
}
else
{
//
// Whatever was configured
//
Peb->ImageProcessAffinityMask = ProcessAffinityMask;
}
}
_SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
{
//
// Fail
//
KeDetachProcess();
_SEH2_YIELD(return STATUS_INVALID_IMAGE_PROTECT);
}
_SEH2_END;
}
//
// Detach from the Process
//
KeDetachProcess();
*BasePeb = Peb;
return STATUS_SUCCESS;
}
NTSTATUS
NTAPI
MmCreateTeb(IN PEPROCESS Process,
IN PCLIENT_ID ClientId,
IN PINITIAL_TEB InitialTeb,
OUT PTEB *BaseTeb)
{
PTEB Teb;
NTSTATUS Status = STATUS_SUCCESS;
*BaseTeb = NULL;
//
// Attach to Target
//
KeAttachProcess(&Process->Pcb);
//
// Allocate the TEB
//
Status = MiCreatePebOrTeb(Process, sizeof(TEB), (PULONG_PTR)&Teb);
if (!NT_SUCCESS(Status))
{
/* Cleanup and exit */
KeDetachProcess();
return Status;
}
//
// Use SEH in case we can't load the TEB
//
_SEH2_TRY
{
//
// Initialize the PEB
//
RtlZeroMemory(Teb, sizeof(TEB));
//
// Set TIB Data
//
#ifdef _M_AMD64
Teb->NtTib.ExceptionList = NULL;
#else
Teb->NtTib.ExceptionList = EXCEPTION_CHAIN_END;
#endif
Teb->NtTib.Self = (PNT_TIB)Teb;
//
// Identify this as an OS/2 V3.0 ("Cruiser") TIB
//
Teb->NtTib.Version = 30 << 8;
//
// Set TEB Data
//
Teb->ClientId = *ClientId;
Teb->RealClientId = *ClientId;
Teb->ProcessEnvironmentBlock = Process->Peb;
Teb->CurrentLocale = PsDefaultThreadLocaleId;
//
// Check if we have a grandparent TEB
//
if ((InitialTeb->PreviousStackBase == NULL) &&
(InitialTeb->PreviousStackLimit == NULL))
{
//
// Use initial TEB values
//
Teb->NtTib.StackBase = InitialTeb->StackBase;
Teb->NtTib.StackLimit = InitialTeb->StackLimit;
Teb->DeallocationStack = InitialTeb->AllocatedStackBase;
}
else
{
//
// Use grandparent TEB values
//
Teb->NtTib.StackBase = InitialTeb->PreviousStackBase;
Teb->NtTib.StackLimit = InitialTeb->PreviousStackLimit;
}
//
// Initialize the static unicode string
//
Teb->StaticUnicodeString.MaximumLength = sizeof(Teb->StaticUnicodeBuffer);
Teb->StaticUnicodeString.Buffer = Teb->StaticUnicodeBuffer;
}
_SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
{
//
// Get error code
//
Status = _SEH2_GetExceptionCode();
}
_SEH2_END;
//
// Return
//
KeDetachProcess();
*BaseTeb = Teb;
return Status;
}
#ifdef _M_AMD64
static
NTSTATUS
MiInsertSharedUserPageVad(VOID)
{
PMMVAD_LONG Vad;
ULONG_PTR BaseAddress;
NTSTATUS Status;
/* Allocate a VAD */
Vad = ExAllocatePoolWithTag(NonPagedPool, sizeof(MMVAD_LONG), 'ldaV');
if (Vad == NULL)
{
DPRINT1("Failed to allocate VAD for shared user page\n");
return STATUS_INSUFFICIENT_RESOURCES;
}
/* Setup the primary flags with the size, and make it private, RO */
Vad->u.LongFlags = 0;
Vad->u.VadFlags.CommitCharge = 0;
Vad->u.VadFlags.NoChange = TRUE;
Vad->u.VadFlags.VadType = VadNone;
Vad->u.VadFlags.MemCommit = FALSE;
Vad->u.VadFlags.Protection = MM_READONLY;
Vad->u.VadFlags.PrivateMemory = TRUE;
Vad->u1.Parent = NULL;
/* Setup the secondary flags to make it a secured, readonly, long VAD */
Vad->u2.LongFlags2 = 0;
Vad->u2.VadFlags2.OneSecured = TRUE;
Vad->u2.VadFlags2.LongVad = TRUE;
Vad->u2.VadFlags2.ReadOnly = FALSE;
Vad->ControlArea = NULL; // For Memory-Area hack
Vad->FirstPrototypePte = NULL;
/* Insert it into the process VAD table */
BaseAddress = MM_SHARED_USER_DATA_VA;
Status = MiInsertVadEx((PMMVAD)Vad,
&BaseAddress,
PAGE_SIZE,
(ULONG_PTR)MM_HIGHEST_VAD_ADDRESS,
PAGE_SIZE,
MEM_TOP_DOWN);
if (!NT_SUCCESS(Status))
{
DPRINT1("Failed to insert shared user VAD\n");
ExFreePoolWithTag(Vad, 'ldaV');
return Status;
}
/* Success */
return STATUS_SUCCESS;
}
#endif
NTSTATUS
NTAPI
MmInitializeProcessAddressSpace(IN PEPROCESS Process,
IN PEPROCESS ProcessClone OPTIONAL,
IN PVOID Section OPTIONAL,
IN OUT PULONG Flags,
IN POBJECT_NAME_INFORMATION *AuditName OPTIONAL)
{
NTSTATUS Status = STATUS_SUCCESS;
SIZE_T ViewSize = 0;
PVOID ImageBase = 0;
PMMPTE PointerPte;
KIRQL OldIrql;
PMMPDE PointerPde;
PMMPFN Pfn;
PFN_NUMBER PageFrameNumber;
UNICODE_STRING FileName;
PWCHAR Source;
PCHAR Destination;
USHORT Length = 0;
#if (_MI_PAGING_LEVELS >= 3)
PMMPPE PointerPpe;
#endif
#if (_MI_PAGING_LEVELS == 4)
PMMPXE PointerPxe;
#endif
/* We should have a PDE */
ASSERT(Process->Pcb.DirectoryTableBase[0] != 0);
ASSERT(Process->PdeUpdateNeeded == FALSE);
/* Attach to the process */
KeAttachProcess(&Process->Pcb);
/* The address space should now been in phase 1 or 0 */
ASSERT(Process->AddressSpaceInitialized <= 1);
Process->AddressSpaceInitialized = 2;
/* Initialize the Addresss Space lock */
KeInitializeGuardedMutex(&Process->AddressCreationLock);
Process->Vm.WorkingSetExpansionLinks.Flink = NULL;
/* Initialize AVL tree */
ASSERT(Process->VadRoot.NumberGenericTableElements == 0);
Process->VadRoot.BalancedRoot.u1.Parent = &Process->VadRoot.BalancedRoot;
/* Lock our working set */
MiLockProcessWorkingSet(Process, PsGetCurrentThread());
/* Lock PFN database */
OldIrql = MiAcquirePfnLock();
/* Setup the PFN for the PDE base of this process */
#if (_MI_PAGING_LEVELS == 4)
PointerPte = MiAddressToPte(PXE_BASE);
#elif (_MI_PAGING_LEVELS == 3)
PointerPte = MiAddressToPte(PPE_BASE);
#else
PointerPte = MiAddressToPte(PDE_BASE);
#endif
PageFrameNumber = PFN_FROM_PTE(PointerPte);
ASSERT(Process->Pcb.DirectoryTableBase[0] == PageFrameNumber * PAGE_SIZE);
MiInitializePfn(PageFrameNumber, PointerPte, TRUE);
/* Do the same for hyperspace */
PointerPde = MiAddressToPde(HYPER_SPACE);
PageFrameNumber = PFN_FROM_PTE(PointerPde);
MiInitializePfn(PageFrameNumber, (PMMPTE)PointerPde, TRUE);
#if (_MI_PAGING_LEVELS == 2)
ASSERT(Process->Pcb.DirectoryTableBase[1] == PageFrameNumber * PAGE_SIZE);
#endif
#if (_MI_PAGING_LEVELS >= 3)
PointerPpe = MiAddressToPpe((PVOID)HYPER_SPACE);
PageFrameNumber = PFN_FROM_PTE(PointerPpe);
MiInitializePfn(PageFrameNumber, PointerPpe, TRUE);
#if (_MI_PAGING_LEVELS == 3)
ASSERT(Process->Pcb.DirectoryTableBase[1] == PageFrameNumber * PAGE_SIZE);
#endif
#endif
#if (_MI_PAGING_LEVELS == 4)
PointerPxe = MiAddressToPxe((PVOID)HYPER_SPACE);
PageFrameNumber = PFN_FROM_PTE(PointerPxe);
MiInitializePfn(PageFrameNumber, PointerPxe, TRUE);
ASSERT(Process->Pcb.DirectoryTableBase[1] == PageFrameNumber * PAGE_SIZE);
#endif
/* Do the same for the Working set list */
PointerPte = MiAddressToPte(MmWorkingSetList);
PageFrameNumber = PFN_FROM_PTE(PointerPte);
MiInitializePfn(PageFrameNumber, PointerPte, TRUE);
/* All our pages are now active & valid. Release the lock. */
MiReleasePfnLock(OldIrql);
/* This should be in hyper space, but not in the mapping range */
Process->Vm.VmWorkingSetList = MmWorkingSetList;
ASSERT(((ULONG_PTR)MmWorkingSetList >= MI_MAPPING_RANGE_END) && ((ULONG_PTR)MmWorkingSetList <= HYPER_SPACE_END));
/* Now initialize the working set list */
MiInitializeWorkingSetList(&Process->Vm);
/* The rule is that the owner process is always in the FLINK of the PDE's PFN entry */
Pfn = MiGetPfnEntry(Process->Pcb.DirectoryTableBase[0] >> PAGE_SHIFT);
ASSERT(Pfn->u4.PteFrame == MiGetPfnEntryIndex(Pfn));
ASSERT(Pfn->u1.WsIndex == 0);
Pfn->u1.Event = (PKEVENT)Process;
/* Sanity check */
ASSERT(Process->PhysicalVadRoot == NULL);
/* Release the process working set */
MiUnlockProcessWorkingSet(Process, PsGetCurrentThread());
#ifdef _M_AMD64
/* On x64 we need a VAD for the shared user page */
Status = MiInsertSharedUserPageVad();
if (!NT_SUCCESS(Status))
{
DPRINT1("MiCreateSharedUserPageVad() failed: 0x%lx\n", Status);
return Status;
}
#endif
/* Check if there's a Section Object */
if (Section)
{
/* Determine the image file name and save it to EPROCESS */
PFILE_OBJECT FileObject = MmGetFileObjectForSection(Section);
FileName = FileObject->FileName;
Source = (PWCHAR)((PCHAR)FileName.Buffer + FileName.Length);
if (FileName.Buffer)
{
/* Loop the file name*/
while (Source > FileName.Buffer)
{
/* Make sure this isn't a backslash */
if (*--Source == OBJ_NAME_PATH_SEPARATOR)
{
/* If so, stop it here */
Source++;
break;
}
else
{
/* Otherwise, keep going */
Length++;
}
}
}
/* Copy the to the process and truncate it to 15 characters if necessary */
Destination = Process->ImageFileName;
Length = min(Length, sizeof(Process->ImageFileName) - 1);
while (Length--) *Destination++ = (UCHAR)*Source++;
*Destination = ANSI_NULL;
/* Check if caller wants an audit name */
if (AuditName)
{
/* Setup the audit name */
Status = SeInitializeProcessAuditName(FileObject, FALSE, AuditName);
if (!NT_SUCCESS(Status))
{
/* Fail */
KeDetachProcess();
return Status;
}
}
/* Map the section */
Status = MmMapViewOfSection(Section,
Process,
(PVOID*)&ImageBase,
0,
0,
NULL,
&ViewSize,
0,
MEM_COMMIT,
PAGE_READWRITE);
/* Save the pointer */
Process->SectionBaseAddress = ImageBase;
}
/* Be nice and detach */
KeDetachProcess();
/* Return status to caller */
return Status;
}
CODE_SEG("INIT")
NTSTATUS
NTAPI
MmInitializeHandBuiltProcess(IN PEPROCESS Process,
IN PULONG_PTR DirectoryTableBase)
{
/* Share the directory base with the idle process */
DirectoryTableBase[0] = PsGetCurrentProcess()->Pcb.DirectoryTableBase[0];
DirectoryTableBase[1] = PsGetCurrentProcess()->Pcb.DirectoryTableBase[1];
/* Initialize the Addresss Space */
KeInitializeGuardedMutex(&Process->AddressCreationLock);
KeInitializeSpinLock(&Process->HyperSpaceLock);
Process->Vm.WorkingSetExpansionLinks.Flink = NULL;
ASSERT(Process->VadRoot.NumberGenericTableElements == 0);
Process->VadRoot.BalancedRoot.u1.Parent = &Process->VadRoot.BalancedRoot;
/* Use idle process Working set */
Process->Vm.VmWorkingSetList = PsGetCurrentProcess()->Vm.VmWorkingSetList;
Process->WorkingSetPage = PsGetCurrentProcess()->WorkingSetPage;
/* Done */
Process->HasAddressSpace = TRUE;//??
return STATUS_SUCCESS;
}
CODE_SEG("INIT")
NTSTATUS
NTAPI
MmInitializeHandBuiltProcess2(IN PEPROCESS Process)
{
/* Lock the VAD, ARM3-owned ranges away */
return STATUS_SUCCESS;
}
BOOLEAN
NTAPI
MmCreateProcessAddressSpace(IN ULONG MinWs,
IN PEPROCESS Process,
OUT PULONG_PTR DirectoryTableBase)
{
KIRQL OldIrql;
PFN_NUMBER TableBaseIndex, HyperIndex, WsListIndex;
ULONG Color;
/* Make sure we don't already have a page directory setup */
ASSERT(Process->Pcb.DirectoryTableBase[0] == 0);
ASSERT(Process->Pcb.DirectoryTableBase[1] == 0);
ASSERT(Process->WorkingSetPage == 0);
/* Choose a process color */
Process->NextPageColor = (USHORT)RtlRandom(&MmProcessColorSeed);
/* Setup the hyperspace lock */
KeInitializeSpinLock(&Process->HyperSpaceLock);
/* Lock PFN database */
OldIrql = MiAcquirePfnLock();
/*
* Get a page for the table base, one for hyper space & one for the working set list.
* The PFNs for these pages will be initialized in MmInitializeProcessAddressSpace,
* when we are already attached to the process.
* The other pages (if any) are allocated in the arch-specific part.
*/
Color = MI_GET_NEXT_PROCESS_COLOR(Process);
MI_SET_USAGE(MI_USAGE_PAGE_DIRECTORY);
TableBaseIndex = MiRemoveZeroPageSafe(Color);
if (!TableBaseIndex)
{
/* No zero pages, grab a free one */
TableBaseIndex = MiRemoveAnyPage(Color);
/* Zero it outside the PFN lock */
MiReleasePfnLock(OldIrql);
MiZeroPhysicalPage(TableBaseIndex);
OldIrql = MiAcquirePfnLock();
}
MI_SET_USAGE(MI_USAGE_PAGE_DIRECTORY);
Color = MI_GET_NEXT_PROCESS_COLOR(Process);
HyperIndex = MiRemoveZeroPageSafe(Color);
if (!HyperIndex)
{
/* No zero pages, grab a free one */
HyperIndex = MiRemoveAnyPage(Color);
/* Zero it outside the PFN lock */
MiReleasePfnLock(OldIrql);
MiZeroPhysicalPage(HyperIndex);
OldIrql = MiAcquirePfnLock();
}
MI_SET_USAGE(MI_USAGE_PAGE_TABLE);
Color = MI_GET_NEXT_PROCESS_COLOR(Process);
WsListIndex = MiRemoveZeroPageSafe(Color);
if (!WsListIndex)
{
/* No zero pages, grab a free one */
WsListIndex = MiRemoveAnyPage(Color);
/* Zero it outside the PFN lock */
MiReleasePfnLock(OldIrql);
MiZeroPhysicalPage(WsListIndex);
}
else
{
/* Release the PFN lock */
MiReleasePfnLock(OldIrql);
}
/* Set the base directory pointers */
Process->WorkingSetPage = WsListIndex;
DirectoryTableBase[0] = TableBaseIndex << PAGE_SHIFT;
DirectoryTableBase[1] = HyperIndex << PAGE_SHIFT;
/* Perform the arch-specific parts */
if (!MiArchCreateProcessAddressSpace(Process, DirectoryTableBase))
{
OldIrql = MiAcquirePfnLock();
MiInsertPageInFreeList(WsListIndex);
MiInsertPageInFreeList(HyperIndex);
MiInsertPageInFreeList(TableBaseIndex);
MiReleasePfnLock(OldIrql);
Process->WorkingSetPage = 0;
DirectoryTableBase[0] = 0;
DirectoryTableBase[1] = 0;
return FALSE;
}
/* Switch to phase 1 initialization */
ASSERT(Process->AddressSpaceInitialized == 0);
Process->AddressSpaceInitialized = 1;
/* Add the process to the session */
MiSessionAddProcess(Process);
return TRUE;
}
VOID
NTAPI
MmCleanProcessAddressSpace(IN PEPROCESS Process)
{
PMMVAD Vad;
PMM_AVL_TABLE VadTree;
PETHREAD Thread = PsGetCurrentThread();
/* Only support this */
ASSERT(Process->AddressSpaceInitialized == 2);
/* Remove from the session */
MiSessionRemoveProcess();
/* Lock the process address space from changes */
MmLockAddressSpace(&Process->Vm);
MiLockProcessWorkingSetUnsafe(Process, Thread);
/* VM is deleted now */
Process->VmDeleted = TRUE;
MiUnlockProcessWorkingSetUnsafe(Process, Thread);
/* Enumerate the VADs */
VadTree = &Process->VadRoot;
while (VadTree->NumberGenericTableElements)
{
/* Grab the current VAD */
Vad = (PMMVAD)VadTree->BalancedRoot.RightChild;
/* Check for old-style memory areas */
if (Vad->u.VadFlags.Spare == 1)
{
/* Let RosMm handle this */
MiRosCleanupMemoryArea(Process, Vad);
continue;
}
/* Lock the working set */
MiLockProcessWorkingSetUnsafe(Process, Thread);
/* Remove this VAD from the tree */
ASSERT(VadTree->NumberGenericTableElements >= 1);
MiRemoveNode((PMMADDRESS_NODE)Vad, VadTree);
/* Only regular VADs supported for now */
ASSERT(Vad->u.VadFlags.VadType == VadNone);
/* Check if this is a section VAD */
if (!(Vad->u.VadFlags.PrivateMemory) && (Vad->ControlArea))
{
/* Remove the view */
MiRemoveMappedView(Process, Vad);
}
else
{
/* Delete the addresses */
MiDeleteVirtualAddresses(Vad->StartingVpn << PAGE_SHIFT,
(Vad->EndingVpn << PAGE_SHIFT) | (PAGE_SIZE - 1),
Vad);
/* Release the working set */
MiUnlockProcessWorkingSetUnsafe(Process, Thread);
}
/* Skip ARM3 fake VADs, they'll be freed by MmDeleteProcessAddresSpace */
if (Vad->u.VadFlags.Spare == 1)
{
/* Set a flag so MmDeleteMemoryArea knows to free, but not to remove */
Vad->u.VadFlags.Spare = 2;
continue;
}
/* Free the VAD memory */
ExFreePool(Vad);
}
/* Lock the working set */
MiLockProcessWorkingSetUnsafe(Process, Thread);
ASSERT(Process->CloneRoot == NULL);
ASSERT(Process->PhysicalVadRoot == NULL);
/* Delete the shared user data section */
MiDeleteVirtualAddresses(USER_SHARED_DATA, USER_SHARED_DATA, NULL);
/* Release the working set */
MiUnlockProcessWorkingSetUnsafe(Process, Thread);
/* Release the address space */
MmUnlockAddressSpace(&Process->Vm);
}
VOID
NTAPI
MmDeleteProcessAddressSpace(IN PEPROCESS Process)
{
PMMPFN Pfn1, Pfn2;
KIRQL OldIrql;
PFN_NUMBER PageFrameIndex;
#ifndef _M_AMD64
OldIrql = MiAcquireExpansionLock();
RemoveEntryList(&Process->MmProcessLinks);
MiReleaseExpansionLock(OldIrql);
#endif
//ASSERT(Process->CommitCharge == 0);
/* Remove us from the list */
OldIrql = MiAcquireExpansionLock();
RemoveEntryList(&Process->Vm.WorkingSetExpansionLinks);
MiReleaseExpansionLock(OldIrql);
/* Acquire the PFN lock */
OldIrql = MiAcquirePfnLock();
/* Check for fully initialized process */
if (Process->AddressSpaceInitialized == 2)
{
/* Map the working set page and its page table */
Pfn1 = MiGetPfnEntry(Process->WorkingSetPage);
Pfn2 = MiGetPfnEntry(Pfn1->u4.PteFrame);
/* Nuke it */
MI_SET_PFN_DELETED(Pfn1);
MiDecrementShareCount(Pfn2, Pfn1->u4.PteFrame);
MiDecrementShareCount(Pfn1, Process->WorkingSetPage);
ASSERT((Pfn1->u3.e2.ReferenceCount == 0) || (Pfn1->u3.e1.WriteInProgress));
/* Now map hyperspace and its page table */
PageFrameIndex = Process->Pcb.DirectoryTableBase[1] >> PAGE_SHIFT;
Pfn1 = MiGetPfnEntry(PageFrameIndex);
Pfn2 = MiGetPfnEntry(Pfn1->u4.PteFrame);
/* Nuke it */
MI_SET_PFN_DELETED(Pfn1);
MiDecrementShareCount(Pfn2, Pfn1->u4.PteFrame);
MiDecrementShareCount(Pfn1, PageFrameIndex);
ASSERT((Pfn1->u3.e2.ReferenceCount == 0) || (Pfn1->u3.e1.WriteInProgress));
/* Finally, nuke the PDE itself */
PageFrameIndex = Process->Pcb.DirectoryTableBase[0] >> PAGE_SHIFT;
Pfn1 = MiGetPfnEntry(PageFrameIndex);
MI_SET_PFN_DELETED(Pfn1);
MiDecrementShareCount(Pfn1, PageFrameIndex);
MiDecrementShareCount(Pfn1, PageFrameIndex);
/* Page table is now dead. Bye bye... */
ASSERT((Pfn1->u3.e2.ReferenceCount == 0) || (Pfn1->u3.e1.WriteInProgress));
}
else
{
/* A partly-initialized process should never exit through here */
ASSERT(FALSE);
}
/* Release the PFN lock */
MiReleasePfnLock(OldIrql);
/* Drop a reference on the session */
if (Process->Session) MiReleaseProcessReferenceToSessionDataPage(Process->Session);
/* Clear out the PDE pages */
Process->Pcb.DirectoryTableBase[0] = 0;
Process->Pcb.DirectoryTableBase[1] = 0;
}
/* SYSTEM CALLS ***************************************************************/
NTSTATUS
NTAPI
NtAllocateUserPhysicalPages(IN HANDLE ProcessHandle,
IN OUT PULONG_PTR NumberOfPages,
IN OUT PULONG_PTR UserPfnArray)
{
UNIMPLEMENTED;
return STATUS_NOT_IMPLEMENTED;
}
NTSTATUS
NTAPI
NtMapUserPhysicalPages(IN PVOID VirtualAddresses,
IN ULONG_PTR NumberOfPages,
IN OUT PULONG_PTR UserPfnArray)
{
UNIMPLEMENTED;
return STATUS_NOT_IMPLEMENTED;
}
NTSTATUS
NTAPI
NtMapUserPhysicalPagesScatter(IN PVOID *VirtualAddresses,
IN ULONG_PTR NumberOfPages,
IN OUT PULONG_PTR UserPfnArray)
{
UNIMPLEMENTED;
return STATUS_NOT_IMPLEMENTED;
}
NTSTATUS
NTAPI
NtFreeUserPhysicalPages(IN HANDLE ProcessHandle,
IN OUT PULONG_PTR NumberOfPages,
IN OUT PULONG_PTR UserPfnArray)
{
UNIMPLEMENTED;
return STATUS_NOT_IMPLEMENTED;
}
/* EOF */
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