23 Oct
2007
23 Oct
'07
11:08 a.m.
Author: mnordell
Date: Tue Oct 23 15:08:18 2007
New Revision: 29827
URL: http://svn.reactos.org/svn/reactos?rev=29827&view=rev
Log:
[FORMATTING] Consistency.
Modified:
trunk/reactos/ntoskrnl/mm/virtual.c
Modified: trunk/reactos/ntoskrnl/mm/virtual.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/ntoskrnl/mm/virtual.c?rev=…
==============================================================================
--- trunk/reactos/ntoskrnl/mm/virtual.c (original)
+++ trunk/reactos/ntoskrnl/mm/virtual.c Tue Oct 23 15:08:18 2007
@@ -33,241 +33,248 @@
* RETURNS: Status
*/
{
- /* This should be implemented once we support network filesystems */
- DPRINT("NtFlushVirtualMemory is UNIMPLEMENTED\n");
- return(STATUS_SUCCESS);
+ /* This should be implemented once we support network filesystems */
+ DPRINT("NtFlushVirtualMemory is UNIMPLEMENTED\n");
+ return(STATUS_SUCCESS);
}
NTSTATUS STDCALL
MiLockVirtualMemory(HANDLE ProcessHandle,
- PVOID BaseAddress,
- ULONG NumberOfBytesToLock,
- PULONG NumberOfBytesLocked,
- PObReferenceObjectByHandle pObReferenceObjectByHandle,
- PMmCreateMdl pMmCreateMdl,
- PObDereferenceObject pObDereferenceObject,
- PMmProbeAndLockPages pMmProbeAndLockPages,
- PExFreePool pExFreePool)
-{
- PEPROCESS Process;
- NTSTATUS Status;
- PMDL Mdl;
-
- Status = pObReferenceObjectByHandle(ProcessHandle,
- PROCESS_VM_WRITE,
- NULL,
- UserMode,
- (PVOID*)(&Process),
- NULL);
- if (!NT_SUCCESS(Status))
- return(Status);
-
- Mdl = pMmCreateMdl(NULL,
- BaseAddress,
- NumberOfBytesToLock);
- if (Mdl == NULL)
- {
- pObDereferenceObject(Process);
- return(STATUS_NO_MEMORY);
- }
-
- pMmProbeAndLockPages(Mdl,
- UserMode,
- IoWriteAccess);
-
- pExFreePool(Mdl);
-
- pObDereferenceObject(Process);
-
- *NumberOfBytesLocked = NumberOfBytesToLock;
- return(STATUS_SUCCESS);
+ PVOID BaseAddress,
+ ULONG NumberOfBytesToLock,
+ PULONG NumberOfBytesLocked,
+ PObReferenceObjectByHandle pObReferenceObjectByHandle,
+ PMmCreateMdl pMmCreateMdl,
+ PObDereferenceObject pObDereferenceObject,
+ PMmProbeAndLockPages pMmProbeAndLockPages,
+ PExFreePool pExFreePool)
+{
+ PEPROCESS Process;
+ NTSTATUS Status;
+ PMDL Mdl;
+
+ Status = pObReferenceObjectByHandle(ProcessHandle,
+ PROCESS_VM_WRITE,
+ NULL,
+ UserMode,
+ (PVOID*)(&Process),
+ NULL);
+ if (!NT_SUCCESS(Status))
+ return(Status);
+
+ Mdl = pMmCreateMdl(NULL,
+ BaseAddress,
+ NumberOfBytesToLock);
+ if (Mdl == NULL)
+ {
+ pObDereferenceObject(Process);
+ return(STATUS_NO_MEMORY);
+ }
+
+ pMmProbeAndLockPages(Mdl,
+ UserMode,
+ IoWriteAccess);
+
+ pExFreePool(Mdl);
+
+ pObDereferenceObject(Process);
+
+ *NumberOfBytesLocked = NumberOfBytesToLock;
+ return(STATUS_SUCCESS);
}
NTSTATUS STDCALL
NtLockVirtualMemory(HANDLE ProcessHandle,
- PVOID BaseAddress,
- ULONG NumberOfBytesToLock,
- PULONG NumberOfBytesLocked)
-{
- DPRINT("NtLockVirtualMemory(ProcessHandle %x, BaseAddress %x, "
- "NumberOfBytesToLock %d, NumberOfBytesLocked %x)\n",
- ProcessHandle,
- BaseAddress,
- NumberOfBytesToLock,
- NumberOfBytesLocked);
-
- return MiLockVirtualMemory(ProcessHandle,
- BaseAddress,
- NumberOfBytesToLock,
- NumberOfBytesLocked,
- ObReferenceObjectByHandle,
- MmCreateMdl,
- (PVOID)ObfDereferenceObject,
- MmProbeAndLockPages,
- ExFreePool);
+ PVOID BaseAddress,
+ ULONG NumberOfBytesToLock,
+ PULONG NumberOfBytesLocked)
+{
+ DPRINT("NtLockVirtualMemory(ProcessHandle %x, BaseAddress %x, "
+ "NumberOfBytesToLock %d, NumberOfBytesLocked %x)\n",
+ ProcessHandle,
+ BaseAddress,
+ NumberOfBytesToLock,
+ NumberOfBytesLocked);
+
+ return MiLockVirtualMemory(ProcessHandle,
+ BaseAddress,
+ NumberOfBytesToLock,
+ NumberOfBytesLocked,
+ ObReferenceObjectByHandle,
+ MmCreateMdl,
+ (PVOID)ObfDereferenceObject,
+ MmProbeAndLockPages,
+ ExFreePool);
}
NTSTATUS FASTCALL
-MiQueryVirtualMemory (IN HANDLE ProcessHandle,
- IN PVOID Address,
- IN MEMORY_INFORMATION_CLASS VirtualMemoryInformationClass,
- OUT PVOID VirtualMemoryInformation,
- IN ULONG Length,
- OUT PULONG ResultLength)
-{
- NTSTATUS Status;
- PEPROCESS Process;
- MEMORY_AREA* MemoryArea;
- PMADDRESS_SPACE AddressSpace;
-
- if (Address < MmSystemRangeStart)
- {
- Status = ObReferenceObjectByHandle(ProcessHandle,
- PROCESS_QUERY_INFORMATION,
- NULL,
- UserMode,
- (PVOID*)(&Process),
- NULL);
-
- if (!NT_SUCCESS(Status))
- {
- DPRINT("NtQueryVirtualMemory() = %x\n",Status);
- return(Status);
- }
- AddressSpace = (PMADDRESS_SPACE)&Process->VadRoot;
- }
- else
- {
- AddressSpace = MmGetKernelAddressSpace();
- }
- MmLockAddressSpace(AddressSpace);
- MemoryArea = MmLocateMemoryAreaByAddress(AddressSpace, Address);
- switch(VirtualMemoryInformationClass)
- {
- case MemoryBasicInformation:
- {
- PMEMORY_BASIC_INFORMATION Info =
- (PMEMORY_BASIC_INFORMATION)VirtualMemoryInformation;
+MiQueryVirtualMemory(IN HANDLE ProcessHandle,
+ IN PVOID Address,
+ IN MEMORY_INFORMATION_CLASS VirtualMemoryInformationClass,
+ OUT PVOID VirtualMemoryInformation,
+ IN ULONG Length,
+ OUT PULONG ResultLength)
+{
+ NTSTATUS Status;
+ PEPROCESS Process;
+ MEMORY_AREA* MemoryArea;
+ PMADDRESS_SPACE AddressSpace;
+
+ if (Address < MmSystemRangeStart)
+ {
+ Status = ObReferenceObjectByHandle(ProcessHandle,
+ PROCESS_QUERY_INFORMATION,
+ NULL,
+ UserMode,
+ (PVOID*)(&Process),
+ NULL);
+
+ if (!NT_SUCCESS(Status))
+ {
+ DPRINT("NtQueryVirtualMemory() = %x\n",Status);
+ return(Status);
+ }
+ AddressSpace = (PMADDRESS_SPACE)&Process->VadRoot;
+ }
+ else
+ {
+ AddressSpace = MmGetKernelAddressSpace();
+ }
+ MmLockAddressSpace(AddressSpace);
+ MemoryArea = MmLocateMemoryAreaByAddress(AddressSpace, Address);
+ switch(VirtualMemoryInformationClass)
+ {
+ case MemoryBasicInformation:
+ {
+ PMEMORY_BASIC_INFORMATION Info =
+ (PMEMORY_BASIC_INFORMATION)VirtualMemoryInformation;
if (Length != sizeof(MEMORY_BASIC_INFORMATION))
{
- MmUnlockAddressSpace(AddressSpace);
- ObDereferenceObject(Process);
- return(STATUS_INFO_LENGTH_MISMATCH);
+ MmUnlockAddressSpace(AddressSpace);
+ ObDereferenceObject(Process);
+ return(STATUS_INFO_LENGTH_MISMATCH);
}
if (MemoryArea == NULL)
{
- Info->Type = 0;
- Info->State = MEM_FREE;
- Info->Protect = PAGE_NOACCESS;
- Info->AllocationProtect = 0;
- Info->BaseAddress = (PVOID)PAGE_ROUND_DOWN(Address);
- Info->AllocationBase = NULL;
- Info->RegionSize = MmFindGapAtAddress(AddressSpace, Info->BaseAddress);
- Status = STATUS_SUCCESS;
- *ResultLength = sizeof(MEMORY_BASIC_INFORMATION);
- }
+ Info->Type = 0;
+ Info->State = MEM_FREE;
+ Info->Protect = PAGE_NOACCESS;
+ Info->AllocationProtect = 0;
+ Info->BaseAddress = (PVOID)PAGE_ROUND_DOWN(Address);
+ Info->AllocationBase = NULL;
+ Info->RegionSize = MmFindGapAtAddress(AddressSpace,
Info->BaseAddress);
+ Status = STATUS_SUCCESS;
+ *ResultLength = sizeof(MEMORY_BASIC_INFORMATION);
+ }
else
- {
- switch(MemoryArea->Type)
- {
- case MEMORY_AREA_VIRTUAL_MEMORY:
- case MEMORY_AREA_PEB_OR_TEB:
- Status = MmQueryAnonMem(MemoryArea, Address, Info,
- ResultLength);
- break;
- case MEMORY_AREA_SECTION_VIEW:
- Status = MmQuerySectionView(MemoryArea, Address, Info,
- ResultLength);
- break;
- case MEMORY_AREA_NO_ACCESS:
- Info->Type = MEM_PRIVATE;
- Info->State = MEM_RESERVE;
- Info->Protect = MemoryArea->Protect;
- Info->AllocationProtect = MemoryArea->Protect;
- Info->BaseAddress = MemoryArea->StartingAddress;
- Info->AllocationBase = MemoryArea->StartingAddress;
- Info->RegionSize = (ULONG_PTR)MemoryArea->EndingAddress -
- (ULONG_PTR)MemoryArea->StartingAddress;
- Status = STATUS_SUCCESS;
- *ResultLength = sizeof(MEMORY_BASIC_INFORMATION);
- break;
- case MEMORY_AREA_SHARED_DATA:
- Info->Type = MEM_PRIVATE;
- Info->State = MEM_COMMIT;
- Info->Protect = MemoryArea->Protect;
- Info->AllocationProtect = MemoryArea->Protect;
- Info->BaseAddress = MemoryArea->StartingAddress;
- Info->AllocationBase = MemoryArea->StartingAddress;
- Info->RegionSize = (ULONG_PTR)MemoryArea->EndingAddress -
- (ULONG_PTR)MemoryArea->StartingAddress;
- Status = STATUS_SUCCESS;
- *ResultLength = sizeof(MEMORY_BASIC_INFORMATION);
- break;
- case MEMORY_AREA_SYSTEM:
- Info->Type = 0;
- Info->State = MEM_COMMIT;
- Info->Protect = MemoryArea->Protect;
- Info->AllocationProtect = MemoryArea->Protect;
- Info->BaseAddress = MemoryArea->StartingAddress;
- Info->AllocationBase = MemoryArea->StartingAddress;
- Info->RegionSize = (ULONG_PTR)MemoryArea->EndingAddress -
- (ULONG_PTR)MemoryArea->StartingAddress;
- Status = STATUS_SUCCESS;
- *ResultLength = sizeof(MEMORY_BASIC_INFORMATION);
- break;
- case MEMORY_AREA_KERNEL_STACK:
- Info->Type = 0;
- Info->State = MEM_COMMIT;
- Info->Protect = MemoryArea->Protect;
- Info->AllocationProtect = MemoryArea->Protect;
- Info->BaseAddress = MemoryArea->StartingAddress;
- Info->AllocationBase = MemoryArea->StartingAddress;
- Info->RegionSize = (ULONG_PTR)MemoryArea->EndingAddress -
- (ULONG_PTR)MemoryArea->StartingAddress;
- Status = STATUS_SUCCESS;
- *ResultLength = sizeof(MEMORY_BASIC_INFORMATION);
- break;
- case MEMORY_AREA_PAGED_POOL:
- Info->Type = 0;
- Info->State = MEM_COMMIT;
- Info->Protect = MemoryArea->Protect;
- Info->AllocationProtect = MemoryArea->Protect;
- Info->BaseAddress = MemoryArea->StartingAddress;
- Info->AllocationBase = MemoryArea->StartingAddress;
- Info->RegionSize = (ULONG_PTR)MemoryArea->EndingAddress -
- (ULONG_PTR)MemoryArea->StartingAddress;
- Status = STATUS_SUCCESS;
- *ResultLength = sizeof(MEMORY_BASIC_INFORMATION);
- break;
- default:
- DPRINT1("unhandled memory area type: 0x%x\n", MemoryArea->Type);
- Status = STATUS_UNSUCCESSFUL;
- *ResultLength = 0;
- }
- }
+ {
+ switch(MemoryArea->Type)
+ {
+ case MEMORY_AREA_VIRTUAL_MEMORY:
+ case MEMORY_AREA_PEB_OR_TEB:
+ Status = MmQueryAnonMem(MemoryArea, Address, Info,
+ ResultLength);
+ break;
+
+ case MEMORY_AREA_SECTION_VIEW:
+ Status = MmQuerySectionView(MemoryArea, Address, Info,
+ ResultLength);
+ break;
+
+ case MEMORY_AREA_NO_ACCESS:
+ Info->Type = MEM_PRIVATE;
+ Info->State = MEM_RESERVE;
+ Info->Protect = MemoryArea->Protect;
+ Info->AllocationProtect = MemoryArea->Protect;
+ Info->BaseAddress = MemoryArea->StartingAddress;
+ Info->AllocationBase = MemoryArea->StartingAddress;
+ Info->RegionSize = (ULONG_PTR)MemoryArea->EndingAddress -
+ (ULONG_PTR)MemoryArea->StartingAddress;
+ Status = STATUS_SUCCESS;
+ *ResultLength = sizeof(MEMORY_BASIC_INFORMATION);
+ break;
+
+ case MEMORY_AREA_SHARED_DATA:
+ Info->Type = MEM_PRIVATE;
+ Info->State = MEM_COMMIT;
+ Info->Protect = MemoryArea->Protect;
+ Info->AllocationProtect = MemoryArea->Protect;
+ Info->BaseAddress = MemoryArea->StartingAddress;
+ Info->AllocationBase = MemoryArea->StartingAddress;
+ Info->RegionSize = (ULONG_PTR)MemoryArea->EndingAddress -
+ (ULONG_PTR)MemoryArea->StartingAddress;
+ Status = STATUS_SUCCESS;
+ *ResultLength = sizeof(MEMORY_BASIC_INFORMATION);
+ break;
+
+ case MEMORY_AREA_SYSTEM:
+ Info->Type = 0;
+ Info->State = MEM_COMMIT;
+ Info->Protect = MemoryArea->Protect;
+ Info->AllocationProtect = MemoryArea->Protect;
+ Info->BaseAddress = MemoryArea->StartingAddress;
+ Info->AllocationBase = MemoryArea->StartingAddress;
+ Info->RegionSize = (ULONG_PTR)MemoryArea->EndingAddress -
+ (ULONG_PTR)MemoryArea->StartingAddress;
+ Status = STATUS_SUCCESS;
+ *ResultLength = sizeof(MEMORY_BASIC_INFORMATION);
+ break;
+
+ case MEMORY_AREA_KERNEL_STACK:
+ Info->Type = 0;
+ Info->State = MEM_COMMIT;
+ Info->Protect = MemoryArea->Protect;
+ Info->AllocationProtect = MemoryArea->Protect;
+ Info->BaseAddress = MemoryArea->StartingAddress;
+ Info->AllocationBase = MemoryArea->StartingAddress;
+ Info->RegionSize = (ULONG_PTR)MemoryArea->EndingAddress -
+ (ULONG_PTR)MemoryArea->StartingAddress;
+ Status = STATUS_SUCCESS;
+ *ResultLength = sizeof(MEMORY_BASIC_INFORMATION);
+ break;
+
+ case MEMORY_AREA_PAGED_POOL:
+ Info->Type = 0;
+ Info->State = MEM_COMMIT;
+ Info->Protect = MemoryArea->Protect;
+ Info->AllocationProtect = MemoryArea->Protect;
+ Info->BaseAddress = MemoryArea->StartingAddress;
+ Info->AllocationBase = MemoryArea->StartingAddress;
+ Info->RegionSize = (ULONG_PTR)MemoryArea->EndingAddress -
+ (ULONG_PTR)MemoryArea->StartingAddress;
+ Status = STATUS_SUCCESS;
+ *ResultLength = sizeof(MEMORY_BASIC_INFORMATION);
+ break;
+
+ default:
+ DPRINT1("unhandled memory area type: 0x%x\n",
MemoryArea->Type);
+ Status = STATUS_UNSUCCESSFUL;
+ *ResultLength = 0;
+ }
+ }
break;
- }
-
- default:
- {
+ }
+
+ default:
+ {
Status = STATUS_INVALID_INFO_CLASS;
*ResultLength = 0;
break;
- }
- }
-
- MmUnlockAddressSpace(AddressSpace);
- if (Address < MmSystemRangeStart)
- {
- ASSERT(Process);
- ObDereferenceObject(Process);
- }
-
- return Status;
+ }
+ }
+
+ MmUnlockAddressSpace(AddressSpace);
+ if (Address < MmSystemRangeStart)
+ {
+ ASSERT(Process);
+ ObDereferenceObject(Process);
+ }
+
+ return Status;
}
/* (tMk 2004.II.4)
@@ -276,102 +283,102 @@
*
*/
NTSTATUS STDCALL
-NtQueryVirtualMemory (IN HANDLE ProcessHandle,
- IN PVOID Address,
- IN MEMORY_INFORMATION_CLASS VirtualMemoryInformationClass,
- OUT PVOID VirtualMemoryInformation,
- IN ULONG Length,
- OUT PULONG UnsafeResultLength)
-{
- NTSTATUS Status = STATUS_SUCCESS;
- ULONG ResultLength = 0;
- KPROCESSOR_MODE PreviousMode;
- union
- {
- MEMORY_BASIC_INFORMATION BasicInfo;
- }
- VirtualMemoryInfo;
-
- DPRINT("NtQueryVirtualMemory(ProcessHandle %x, Address %x, "
- "VirtualMemoryInformationClass %d, VirtualMemoryInformation %x, "
- "Length %lu ResultLength %x)\n",ProcessHandle,Address,
- VirtualMemoryInformationClass,VirtualMemoryInformation,
- Length,ResultLength);
-
- PreviousMode = ExGetPreviousMode();
-
- if (PreviousMode != KernelMode && UnsafeResultLength != NULL)
- {
- _SEH_TRY
- {
- ProbeForWriteUlong(UnsafeResultLength);
- }
- _SEH_HANDLE
- {
- Status = _SEH_GetExceptionCode();
- }
- _SEH_END;
-
- if (!NT_SUCCESS(Status))
- {
- return Status;
- }
- }
-
- if (Address >= MmSystemRangeStart)
- {
- DPRINT1("Invalid parameter\n");
- return STATUS_INVALID_PARAMETER;
- }
-
- Status = MiQueryVirtualMemory ( ProcessHandle,
- Address,
- VirtualMemoryInformationClass,
- &VirtualMemoryInfo,
- Length,
- &ResultLength );
-
- if (NT_SUCCESS(Status))
- {
- if (PreviousMode != KernelMode)
- {
- _SEH_TRY
- {
- if (ResultLength > 0)
+NtQueryVirtualMemory(IN HANDLE ProcessHandle,
+ IN PVOID Address,
+ IN MEMORY_INFORMATION_CLASS VirtualMemoryInformationClass,
+ OUT PVOID VirtualMemoryInformation,
+ IN ULONG Length,
+ OUT PULONG UnsafeResultLength)
+{
+ NTSTATUS Status = STATUS_SUCCESS;
+ ULONG ResultLength = 0;
+ KPROCESSOR_MODE PreviousMode;
+ union
+ {
+ MEMORY_BASIC_INFORMATION BasicInfo;
+ }
+ VirtualMemoryInfo;
+
+ DPRINT("NtQueryVirtualMemory(ProcessHandle %x, Address %x, "
+ "VirtualMemoryInformationClass %d, VirtualMemoryInformation %x, "
+ "Length %lu ResultLength %x)\n",ProcessHandle,Address,
+ VirtualMemoryInformationClass,VirtualMemoryInformation,
+ Length,ResultLength);
+
+ PreviousMode = ExGetPreviousMode();
+
+ if (PreviousMode != KernelMode && UnsafeResultLength != NULL)
+ {
+ _SEH_TRY
+ {
+ ProbeForWriteUlong(UnsafeResultLength);
+ }
+ _SEH_HANDLE
+ {
+ Status = _SEH_GetExceptionCode();
+ }
+ _SEH_END;
+
+ if (!NT_SUCCESS(Status))
+ {
+ return Status;
+ }
+ }
+
+ if (Address >= MmSystemRangeStart)
+ {
+ DPRINT1("Invalid parameter\n");
+ return STATUS_INVALID_PARAMETER;
+ }
+
+ Status = MiQueryVirtualMemory(ProcessHandle,
+ Address,
+ VirtualMemoryInformationClass,
+ &VirtualMemoryInfo,
+ Length,
+ &ResultLength );
+
+ if (NT_SUCCESS(Status))
+ {
+ if (PreviousMode != KernelMode)
+ {
+ _SEH_TRY
+ {
+ if (ResultLength > 0)
{
- ProbeForWrite(VirtualMemoryInformation,
- ResultLength,
- 1);
- RtlCopyMemory(VirtualMemoryInformation,
- &VirtualMemoryInfo,
- ResultLength);
+ ProbeForWrite(VirtualMemoryInformation,
+ ResultLength,
+ 1);
+ RtlCopyMemory(VirtualMemoryInformation,
+ &VirtualMemoryInfo,
+ ResultLength);
}
- if (UnsafeResultLength != NULL)
+ if (UnsafeResultLength != NULL)
{
- *UnsafeResultLength = ResultLength;
+ *UnsafeResultLength = ResultLength;
}
}
- _SEH_HANDLE
- {
- Status = _SEH_GetExceptionCode();
- }
- _SEH_END;
- }
- else
- {
- if (ResultLength > 0)
- {
- RtlCopyMemory(VirtualMemoryInformation,
- &VirtualMemoryInfo,
- ResultLength);
- }
-
- if (UnsafeResultLength != NULL)
- {
- *UnsafeResultLength = ResultLength;
- }
- }
- }
+ _SEH_HANDLE
+ {
+ Status = _SEH_GetExceptionCode();
+ }
+ _SEH_END;
+ }
+ else
+ {
+ if (ResultLength > 0)
+ {
+ RtlCopyMemory(VirtualMemoryInformation,
+ &VirtualMemoryInfo,
+ ResultLength);
+ }
+
+ if (UnsafeResultLength != NULL)
+ {
+ *UnsafeResultLength = ResultLength;
+ }
+ }
+ }
return(Status);
}
@@ -384,51 +391,51 @@
IN ULONG NewAccessProtection,
OUT PULONG OldAccessProtection OPTIONAL)
{
- PMEMORY_AREA MemoryArea;
- PMADDRESS_SPACE AddressSpace;
- ULONG OldAccessProtection_;
- NTSTATUS Status;
-
- *NumberOfBytesToProtect =
- PAGE_ROUND_UP((ULONG_PTR)(*BaseAddress) + (*NumberOfBytesToProtect)) -
- PAGE_ROUND_DOWN(*BaseAddress);
- *BaseAddress = (PVOID)PAGE_ROUND_DOWN(*BaseAddress);
-
- AddressSpace = (PMADDRESS_SPACE)&(Process)->VadRoot;
-
- MmLockAddressSpace(AddressSpace);
- MemoryArea = MmLocateMemoryAreaByAddress(AddressSpace, *BaseAddress);
- if (MemoryArea == NULL)
- {
- MmUnlockAddressSpace(AddressSpace);
- return STATUS_UNSUCCESSFUL;
- }
-
- if (OldAccessProtection == NULL)
- OldAccessProtection = &OldAccessProtection_;
-
- if (MemoryArea->Type == MEMORY_AREA_VIRTUAL_MEMORY)
- {
- Status = MmProtectAnonMem(AddressSpace, MemoryArea, *BaseAddress,
- *NumberOfBytesToProtect, NewAccessProtection,
- OldAccessProtection);
- }
- else if (MemoryArea->Type == MEMORY_AREA_SECTION_VIEW)
- {
- Status = MmProtectSectionView(AddressSpace, MemoryArea, *BaseAddress,
- *NumberOfBytesToProtect,
- NewAccessProtection,
- OldAccessProtection);
- }
- else
- {
- /* FIXME: Should we return failure or success in this case? */
- Status = STATUS_CONFLICTING_ADDRESSES;
- }
-
- MmUnlockAddressSpace(AddressSpace);
-
- return Status;
+ PMEMORY_AREA MemoryArea;
+ PMADDRESS_SPACE AddressSpace;
+ ULONG OldAccessProtection_;
+ NTSTATUS Status;
+
+ *NumberOfBytesToProtect =
+ PAGE_ROUND_UP((ULONG_PTR)(*BaseAddress) + (*NumberOfBytesToProtect)) -
+ PAGE_ROUND_DOWN(*BaseAddress);
+ *BaseAddress = (PVOID)PAGE_ROUND_DOWN(*BaseAddress);
+
+ AddressSpace = (PMADDRESS_SPACE)&(Process)->VadRoot;
+
+ MmLockAddressSpace(AddressSpace);
+ MemoryArea = MmLocateMemoryAreaByAddress(AddressSpace, *BaseAddress);
+ if (MemoryArea == NULL)
+ {
+ MmUnlockAddressSpace(AddressSpace);
+ return STATUS_UNSUCCESSFUL;
+ }
+
+ if (OldAccessProtection == NULL)
+ OldAccessProtection = &OldAccessProtection_;
+
+ if (MemoryArea->Type == MEMORY_AREA_VIRTUAL_MEMORY)
+ {
+ Status = MmProtectAnonMem(AddressSpace, MemoryArea, *BaseAddress,
+ *NumberOfBytesToProtect, NewAccessProtection,
+ OldAccessProtection);
+ }
+ else if (MemoryArea->Type == MEMORY_AREA_SECTION_VIEW)
+ {
+ Status = MmProtectSectionView(AddressSpace, MemoryArea, *BaseAddress,
+ *NumberOfBytesToProtect,
+ NewAccessProtection,
+ OldAccessProtection);
+ }
+ else
+ {
+ /* FIXME: Should we return failure or success in this case? */
+ Status = STATUS_CONFLICTING_ADDRESSES;
+ }
+
+ MmUnlockAddressSpace(AddressSpace);
+
+ return Status;
}
@@ -444,100 +451,100 @@
IN ULONG NewAccessProtection,
OUT PULONG UnsafeOldAccessProtection)
{
- PEPROCESS Process;
- ULONG OldAccessProtection;
- PVOID BaseAddress = NULL;
- ULONG NumberOfBytesToProtect = 0;
- KPROCESSOR_MODE PreviousMode;
- NTSTATUS Status = STATUS_SUCCESS;
-
- PreviousMode = ExGetPreviousMode();
-
- if (PreviousMode != KernelMode)
- {
- _SEH_TRY
- {
- ProbeForWritePointer(UnsafeBaseAddress);
- ProbeForWriteUlong(UnsafeNumberOfBytesToProtect);
- ProbeForWriteUlong(UnsafeOldAccessProtection);
-
- BaseAddress = *UnsafeBaseAddress;
- NumberOfBytesToProtect = *UnsafeNumberOfBytesToProtect;
- }
- _SEH_HANDLE
- {
- Status = _SEH_GetExceptionCode();
- }
- _SEH_END;
-
- if (!NT_SUCCESS(Status))
- {
- return Status;
- }
- }
- else
- {
- BaseAddress = *UnsafeBaseAddress;
- NumberOfBytesToProtect = *UnsafeNumberOfBytesToProtect;
- }
-
- if ((ULONG_PTR)BaseAddress + NumberOfBytesToProtect - 1 < (ULONG_PTR)BaseAddress
||
- (ULONG_PTR)BaseAddress + NumberOfBytesToProtect - 1 >= MmUserProbeAddress)
- {
- /* Don't allow to change the protection of a kernel mode address */
- return STATUS_INVALID_PARAMETER_2;
- }
-
- /* (tMk 2004.II.5) in Microsoft SDK I read:
- * 'if this parameter is NULL or does not point to a valid variable, the function
fails'
- */
- if(UnsafeOldAccessProtection == NULL)
- {
- return(STATUS_INVALID_PARAMETER);
- }
-
- Status = ObReferenceObjectByHandle(ProcessHandle,
- PROCESS_VM_OPERATION,
- PsProcessType,
- UserMode,
- (PVOID*)(&Process),
- NULL);
- if (!NT_SUCCESS(Status))
- {
- DPRINT("NtProtectVirtualMemory() = %x\n",Status);
- return(Status);
- }
-
- Status = MiProtectVirtualMemory(Process,
- &BaseAddress,
- &NumberOfBytesToProtect,
- NewAccessProtection,
- &OldAccessProtection);
-
- ObDereferenceObject(Process);
-
- if (PreviousMode != KernelMode)
- {
- _SEH_TRY
- {
- *UnsafeOldAccessProtection = OldAccessProtection;
- *UnsafeBaseAddress = BaseAddress;
- *UnsafeNumberOfBytesToProtect = NumberOfBytesToProtect;
- }
- _SEH_HANDLE
- {
- Status = _SEH_GetExceptionCode();
- }
- _SEH_END;
- }
- else
- {
- *UnsafeOldAccessProtection = OldAccessProtection;
- *UnsafeBaseAddress = BaseAddress;
- *UnsafeNumberOfBytesToProtect = NumberOfBytesToProtect;
- }
-
- return(Status);
+ PEPROCESS Process;
+ ULONG OldAccessProtection;
+ PVOID BaseAddress = NULL;
+ ULONG NumberOfBytesToProtect = 0;
+ KPROCESSOR_MODE PreviousMode;
+ NTSTATUS Status = STATUS_SUCCESS;
+
+ PreviousMode = ExGetPreviousMode();
+
+ if (PreviousMode != KernelMode)
+ {
+ _SEH_TRY
+ {
+ ProbeForWritePointer(UnsafeBaseAddress);
+ ProbeForWriteUlong(UnsafeNumberOfBytesToProtect);
+ ProbeForWriteUlong(UnsafeOldAccessProtection);
+
+ BaseAddress = *UnsafeBaseAddress;
+ NumberOfBytesToProtect = *UnsafeNumberOfBytesToProtect;
+ }
+ _SEH_HANDLE
+ {
+ Status = _SEH_GetExceptionCode();
+ }
+ _SEH_END;
+
+ if (!NT_SUCCESS(Status))
+ {
+ return Status;
+ }
+ }
+ else
+ {
+ BaseAddress = *UnsafeBaseAddress;
+ NumberOfBytesToProtect = *UnsafeNumberOfBytesToProtect;
+ }
+
+ if ((ULONG_PTR)BaseAddress + NumberOfBytesToProtect - 1 < (ULONG_PTR)BaseAddress
||
+ (ULONG_PTR)BaseAddress + NumberOfBytesToProtect - 1 >= MmUserProbeAddress)
+ {
+ /* Don't allow to change the protection of a kernel mode address */
+ return STATUS_INVALID_PARAMETER_2;
+ }
+
+ /* (tMk 2004.II.5) in Microsoft SDK I read:
+ * 'if this parameter is NULL or does not point to a valid variable, the function
fails'
+ */
+ if(UnsafeOldAccessProtection == NULL)
+ {
+ return(STATUS_INVALID_PARAMETER);
+ }
+
+ Status = ObReferenceObjectByHandle(ProcessHandle,
+ PROCESS_VM_OPERATION,
+ PsProcessType,
+ UserMode,
+ (PVOID*)(&Process),
+ NULL);
+ if (!NT_SUCCESS(Status))
+ {
+ DPRINT("NtProtectVirtualMemory() = %x\n",Status);
+ return(Status);
+ }
+
+ Status = MiProtectVirtualMemory(Process,
+ &BaseAddress,
+ &NumberOfBytesToProtect,
+ NewAccessProtection,
+ &OldAccessProtection);
+
+ ObDereferenceObject(Process);
+
+ if (PreviousMode != KernelMode)
+ {
+ _SEH_TRY
+ {
+ *UnsafeOldAccessProtection = OldAccessProtection;
+ *UnsafeBaseAddress = BaseAddress;
+ *UnsafeNumberOfBytesToProtect = NumberOfBytesToProtect;
+ }
+ _SEH_HANDLE
+ {
+ Status = _SEH_GetExceptionCode();
+ }
+ _SEH_END;
+ }
+ else
+ {
+ *UnsafeOldAccessProtection = OldAccessProtection;
+ *UnsafeBaseAddress = BaseAddress;
+ *UnsafeNumberOfBytesToProtect = NumberOfBytesToProtect;
+ }
+
+ return(Status);
}
@@ -554,150 +561,153 @@
IN ULONG NumberOfBytesToRead,
OUT PULONG NumberOfBytesRead OPTIONAL)
{
- PMDL Mdl;
- PVOID SystemAddress;
- KPROCESSOR_MODE PreviousMode;
- PEPROCESS Process, CurrentProcess;
- NTSTATUS Status = STATUS_SUCCESS;
-
- PAGED_CODE();
-
- DPRINT("NtReadVirtualMemory(ProcessHandle %x, BaseAddress %x, "
- "Buffer %x, NumberOfBytesToRead %d)\n",ProcessHandle,BaseAddress,
- Buffer,NumberOfBytesToRead);
-
- if ((ULONG_PTR)BaseAddress + NumberOfBytesToRead - 1 < (ULONG_PTR)BaseAddress ||
- (ULONG_PTR)BaseAddress + NumberOfBytesToRead - 1 >= MmUserProbeAddress)
- {
- /* Don't allow to read from kernel space */
- return STATUS_ACCESS_VIOLATION;
- }
-
- PreviousMode = ExGetPreviousMode();
-
- if (PreviousMode != KernelMode)
- {
- if ((ULONG_PTR)Buffer + NumberOfBytesToRead - 1 < (ULONG_PTR)Buffer ||
- (ULONG_PTR)Buffer + NumberOfBytesToRead - 1 >= MmUserProbeAddress)
- {
- /* Don't allow to write into kernel space */
- return STATUS_ACCESS_VIOLATION;
- }
- }
-
- Status = ObReferenceObjectByHandle(ProcessHandle,
- PROCESS_VM_READ,
- NULL,
- PreviousMode,
- (PVOID*)(&Process),
- NULL);
- if (!NT_SUCCESS(Status))
- {
- return(Status);
- }
-
- CurrentProcess = PsGetCurrentProcess();
-
- if(PreviousMode != KernelMode)
- {
- _SEH_TRY
- {
- if(NumberOfBytesRead != NULL)
- {
- ProbeForWriteUlong(NumberOfBytesRead);
- }
- }
- _SEH_HANDLE
- {
- Status = _SEH_GetExceptionCode();
- }
- _SEH_END;
-
- if(!NT_SUCCESS(Status))
- {
- return Status;
- }
- }
-
-
- if (Process == CurrentProcess)
- {
- _SEH_TRY
- {
- RtlCopyMemory(Buffer, BaseAddress, NumberOfBytesToRead);
- }
- _SEH_HANDLE
- {
- Status = _SEH_GetExceptionCode();
- }
- _SEH_END;
- }
- else
- {
- Mdl = MmCreateMdl(NULL,
- Buffer,
- NumberOfBytesToRead);
- if(Mdl == NULL)
- {
- ObDereferenceObject(Process);
- return(STATUS_NO_MEMORY);
- }
- _SEH_TRY
- {
- MmProbeAndLockPages(Mdl,
- PreviousMode,
- IoWriteAccess);
- }
- _SEH_HANDLE
- {
- Status = _SEH_GetExceptionCode();
- }
- _SEH_END;
-
- if(NT_SUCCESS(Status))
- {
- KeAttachProcess(&Process->Pcb);
-
- SystemAddress = MmGetSystemAddressForMdl(Mdl);
-
- Status = STATUS_SUCCESS;
- _SEH_TRY {
- Status = STATUS_PARTIAL_COPY;
- RtlCopyMemory(SystemAddress, BaseAddress, NumberOfBytesToRead);
- Status = STATUS_SUCCESS;
- } _SEH_HANDLE {
- if(Status != STATUS_PARTIAL_COPY)
- Status = _SEH_GetExceptionCode();
- } _SEH_END;
-
- KeDetachProcess();
-
- if (Mdl->MappedSystemVa != NULL)
- {
- MmUnmapLockedPages(Mdl->MappedSystemVa, Mdl);
- }
- MmUnlockPages(Mdl);
- }
- ExFreePool(Mdl);
- }
-
- ObDereferenceObject(Process);
-
- if((NT_SUCCESS(Status) || Status == STATUS_PARTIAL_COPY) &&
- NumberOfBytesRead != NULL)
- {
- _SEH_TRY
- {
- *NumberOfBytesRead = NumberOfBytesToRead;
- }
- _SEH_HANDLE
- {
- Status = _SEH_GetExceptionCode();
- }
- _SEH_END;
- }
-
- return(Status);
+ PMDL Mdl;
+ PVOID SystemAddress;
+ KPROCESSOR_MODE PreviousMode;
+ PEPROCESS Process, CurrentProcess;
+ NTSTATUS Status = STATUS_SUCCESS;
+
+ PAGED_CODE();
+
+ DPRINT("NtReadVirtualMemory(ProcessHandle %x, BaseAddress %x, "
+ "Buffer %x, NumberOfBytesToRead %d)\n",ProcessHandle,BaseAddress,
+ Buffer,NumberOfBytesToRead);
+
+ if ((ULONG_PTR)BaseAddress + NumberOfBytesToRead - 1 < (ULONG_PTR)BaseAddress ||
+ (ULONG_PTR)BaseAddress + NumberOfBytesToRead - 1 >= MmUserProbeAddress)
+ {
+ /* Don't allow to read from kernel space */
+ return STATUS_ACCESS_VIOLATION;
+ }
+
+ PreviousMode = ExGetPreviousMode();
+
+ if (PreviousMode != KernelMode)
+ {
+ if ((ULONG_PTR)Buffer + NumberOfBytesToRead - 1 < (ULONG_PTR)Buffer ||
+ (ULONG_PTR)Buffer + NumberOfBytesToRead - 1 >= MmUserProbeAddress)
+ {
+ /* Don't allow to write into kernel space */
+ return STATUS_ACCESS_VIOLATION;
+ }
+ }
+
+ Status = ObReferenceObjectByHandle(ProcessHandle,
+ PROCESS_VM_READ,
+ NULL,
+ PreviousMode,
+ (PVOID*)(&Process),
+ NULL);
+ if (!NT_SUCCESS(Status))
+ {
+ return(Status);
+ }
+
+ CurrentProcess = PsGetCurrentProcess();
+
+ if(PreviousMode != KernelMode)
+ {
+ _SEH_TRY
+ {
+ if(NumberOfBytesRead != NULL)
+ {
+ ProbeForWriteUlong(NumberOfBytesRead);
+ }
+ }
+ _SEH_HANDLE
+ {
+ Status = _SEH_GetExceptionCode();
+ }
+ _SEH_END;
+
+ if(!NT_SUCCESS(Status))
+ {
+ return Status;
+ }
+ }
+
+
+ if (Process == CurrentProcess)
+ {
+ _SEH_TRY
+ {
+ RtlCopyMemory(Buffer, BaseAddress, NumberOfBytesToRead);
+ }
+ _SEH_HANDLE
+ {
+ Status = _SEH_GetExceptionCode();
+ }
+ _SEH_END;
+ }
+ else
+ {
+ Mdl = MmCreateMdl(NULL,
+ Buffer,
+ NumberOfBytesToRead);
+ if(Mdl == NULL)
+ {
+ ObDereferenceObject(Process);
+ return(STATUS_NO_MEMORY);
+ }
+
+ _SEH_TRY
+ {
+ MmProbeAndLockPages(Mdl, PreviousMode, IoWriteAccess);
+ }
+ _SEH_HANDLE
+ {
+ Status = _SEH_GetExceptionCode();
+ }
+ _SEH_END;
+
+ if(NT_SUCCESS(Status))
+ {
+ KeAttachProcess(&Process->Pcb);
+
+ SystemAddress = MmGetSystemAddressForMdl(Mdl);
+
+ Status = STATUS_SUCCESS;
+ _SEH_TRY
+ {
+ Status = STATUS_PARTIAL_COPY;
+ RtlCopyMemory(SystemAddress, BaseAddress, NumberOfBytesToRead);
+ Status = STATUS_SUCCESS;
+ }
+ _SEH_HANDLE
+ {
+ if(Status != STATUS_PARTIAL_COPY)
+ Status = _SEH_GetExceptionCode();
+ }
+ _SEH_END;
+
+ KeDetachProcess();
+
+ if (Mdl->MappedSystemVa != NULL)
+ {
+ MmUnmapLockedPages(Mdl->MappedSystemVa, Mdl);
+ }
+ MmUnlockPages(Mdl);
+ }
+ ExFreePool(Mdl);
+ }
+
+ ObDereferenceObject(Process);
+
+ if ((NT_SUCCESS(Status) || Status == STATUS_PARTIAL_COPY) &&
+ NumberOfBytesRead != NULL)
+ {
+ _SEH_TRY
+ {
+ *NumberOfBytesRead = NumberOfBytesToRead;
+ }
+ _SEH_HANDLE
+ {
+ Status = _SEH_GetExceptionCode();
+ }
+ _SEH_END;
+ }
+
+ return(Status);
}
/* (tMk 2004.II.05)
@@ -710,49 +720,49 @@
ULONG NumberOfBytesToUnlock,
PULONG NumberOfBytesUnlocked OPTIONAL)
{
- // AG [08-20-03] : I have *no* idea if this is correct, I just used the
- // other functions as a template and made a few intelligent guesses...
-
- NTSTATUS Status;
- PMDL Mdl;
- PEPROCESS Process;
-
- DPRINT("NtUnlockVirtualMemory(ProcessHandle %x, BaseAddress %x, "
- "NumberOfBytesToUnlock %d), NumberOfBytesUnlocked
%x\n",ProcessHandle,BaseAddress,
- NumberOfBytesToUnlock, NumberOfBytesUnlocked);
-
- Status = ObReferenceObjectByHandle(ProcessHandle,
- PROCESS_VM_WRITE,
- NULL,
- UserMode,
- (PVOID*)(&Process),
- NULL);
- if (!NT_SUCCESS(Status))
- {
- return(Status);
- }
-
- Mdl = MmCreateMdl(NULL,
- BaseAddress,
- NumberOfBytesToUnlock);
- if(Mdl == NULL)
- {
- ObDereferenceObject(Process);
- return(STATUS_NO_MEMORY);
- }
-
- ObDereferenceObject(Process);
-
- if (Mdl->MappedSystemVa != NULL)
- {
- MmUnmapLockedPages(Mdl->MappedSystemVa, Mdl);
- }
- MmUnlockPages(Mdl);
- ExFreePool(Mdl);
-
- *NumberOfBytesUnlocked = NumberOfBytesToUnlock;
-
- return(STATUS_SUCCESS);
+ // AG [08-20-03] : I have *no* idea if this is correct, I just used the
+ // other functions as a template and made a few intelligent guesses...
+
+ NTSTATUS Status;
+ PMDL Mdl;
+ PEPROCESS Process;
+
+ DPRINT("NtUnlockVirtualMemory(ProcessHandle %x, BaseAddress %x, "
+ "NumberOfBytesToUnlock %d), NumberOfBytesUnlocked
%x\n",ProcessHandle,BaseAddress,
+ NumberOfBytesToUnlock, NumberOfBytesUnlocked);
+
+ Status = ObReferenceObjectByHandle(ProcessHandle,
+ PROCESS_VM_WRITE,
+ NULL,
+ UserMode,
+ (PVOID*)(&Process),
+ NULL);
+ if (!NT_SUCCESS(Status))
+ {
+ return(Status);
+ }
+
+ Mdl = MmCreateMdl(NULL,
+ BaseAddress,
+ NumberOfBytesToUnlock);
+ if(Mdl == NULL)
+ {
+ ObDereferenceObject(Process);
+ return(STATUS_NO_MEMORY);
+ }
+
+ ObDereferenceObject(Process);
+
+ if (Mdl->MappedSystemVa != NULL)
+ {
+ MmUnmapLockedPages(Mdl->MappedSystemVa, Mdl);
+ }
+ MmUnlockPages(Mdl);
+ ExFreePool(Mdl);
+
+ *NumberOfBytesUnlocked = NumberOfBytesToUnlock;
+
+ return(STATUS_SUCCESS);
}
@@ -769,166 +779,164 @@
IN ULONG NumberOfBytesToWrite,
OUT PULONG NumberOfBytesWritten OPTIONAL)
{
- PMDL Mdl;
- PVOID SystemAddress;
- PEPROCESS Process;
- KPROCESSOR_MODE PreviousMode;
- NTSTATUS CopyStatus, Status = STATUS_SUCCESS;
-
- DPRINT("NtWriteVirtualMemory(ProcessHandle %x, BaseAddress %x, "
- "Buffer %x, NumberOfBytesToWrite %d)\n",ProcessHandle,BaseAddress,
- Buffer,NumberOfBytesToWrite);
-
- if ((ULONG_PTR)BaseAddress + NumberOfBytesToWrite - 1 < (ULONG_PTR)BaseAddress ||
- (ULONG_PTR)BaseAddress + NumberOfBytesToWrite - 1 >= MmUserProbeAddress)
- {
- /* Don't allow to write into kernel space */
- return STATUS_ACCESS_VIOLATION;
- }
-
- PreviousMode = ExGetPreviousMode();
-
- if (PreviousMode != KernelMode)
- {
- if ((ULONG_PTR)Buffer + NumberOfBytesToWrite - 1 < (ULONG_PTR)Buffer ||
- (ULONG_PTR)Buffer + NumberOfBytesToWrite - 1 >= MmUserProbeAddress)
- {
- /* Don't allow to read from kernel space */
- return STATUS_ACCESS_VIOLATION;
- }
- if (NumberOfBytesWritten != NULL)
- {
- _SEH_TRY
- {
- ProbeForWriteUlong(NumberOfBytesWritten);
- }
- _SEH_HANDLE
- {
- Status = _SEH_GetExceptionCode();
- }
- _SEH_END;
-
- if (!NT_SUCCESS(Status))
- {
- return Status;
- }
- }
- }
-
- Status = ObReferenceObjectByHandle(ProcessHandle,
- PROCESS_VM_WRITE,
- NULL,
- UserMode,
- (PVOID*)(&Process),
- NULL);
- if (!NT_SUCCESS(Status))
- {
- return(Status);
- }
-
- CopyStatus = STATUS_SUCCESS;
-
- /* Write memory */
- if (Process == PsGetCurrentProcess())
- {
- if (PreviousMode != KernelMode)
- {
- _SEH_TRY
- {
- memcpy(BaseAddress, Buffer, NumberOfBytesToWrite);
- }
- _SEH_HANDLE
- {
- CopyStatus = _SEH_GetExceptionCode();
- }
- _SEH_END;
- }
- else
- {
- memcpy(BaseAddress, Buffer, NumberOfBytesToWrite);
- }
- }
- else
- {
- /* Create MDL describing the source buffer. */
- Mdl = MmCreateMdl(NULL,
- Buffer,
- NumberOfBytesToWrite);
- if(Mdl == NULL)
- {
- ObDereferenceObject(Process);
- return(STATUS_NO_MEMORY);
- }
- _SEH_TRY
- {
- /* Map the MDL. */
- MmProbeAndLockPages(Mdl,
- UserMode,
- IoReadAccess);
- }
- _SEH_HANDLE
- {
- CopyStatus = _SEH_GetExceptionCode();
- }
- _SEH_END;
-
- if (NT_SUCCESS(CopyStatus))
- {
- /* Copy memory from the mapped MDL into the target buffer. */
- KeAttachProcess(&Process->Pcb);
-
- SystemAddress = MmGetSystemAddressForMdl(Mdl);
- if (PreviousMode != KernelMode)
- {
- _SEH_TRY
+ PMDL Mdl;
+ PVOID SystemAddress;
+ PEPROCESS Process;
+ KPROCESSOR_MODE PreviousMode;
+ NTSTATUS CopyStatus, Status = STATUS_SUCCESS;
+
+ DPRINT("NtWriteVirtualMemory(ProcessHandle %x, BaseAddress %x, "
+ "Buffer %x, NumberOfBytesToWrite %d)\n",ProcessHandle,BaseAddress,
+ Buffer,NumberOfBytesToWrite);
+
+ if ((ULONG_PTR)BaseAddress + NumberOfBytesToWrite - 1 < (ULONG_PTR)BaseAddress ||
+ (ULONG_PTR)BaseAddress + NumberOfBytesToWrite - 1 >= MmUserProbeAddress)
+ {
+ /* Don't allow to write into kernel space */
+ return STATUS_ACCESS_VIOLATION;
+ }
+
+ PreviousMode = ExGetPreviousMode();
+
+ if (PreviousMode != KernelMode)
+ {
+ if ((ULONG_PTR)Buffer + NumberOfBytesToWrite - 1 < (ULONG_PTR)Buffer ||
+ (ULONG_PTR)Buffer + NumberOfBytesToWrite - 1 >= MmUserProbeAddress)
+ {
+ /* Don't allow to read from kernel space */
+ return STATUS_ACCESS_VIOLATION;
+ }
+ if (NumberOfBytesWritten != NULL)
+ {
+ _SEH_TRY
+ {
+ ProbeForWriteUlong(NumberOfBytesWritten);
+ }
+ _SEH_HANDLE
+ {
+ Status = _SEH_GetExceptionCode();
+ }
+ _SEH_END;
+
+ if (!NT_SUCCESS(Status))
+ {
+ return Status;
+ }
+ }
+ }
+
+ Status = ObReferenceObjectByHandle(ProcessHandle,
+ PROCESS_VM_WRITE,
+ NULL,
+ UserMode,
+ (PVOID*)(&Process),
+ NULL);
+ if (!NT_SUCCESS(Status))
+ {
+ return(Status);
+ }
+
+ CopyStatus = STATUS_SUCCESS;
+
+ /* Write memory */
+ if (Process == PsGetCurrentProcess())
+ {
+ if (PreviousMode != KernelMode)
+ {
+ _SEH_TRY
+ {
+ memcpy(BaseAddress, Buffer, NumberOfBytesToWrite);
+ }
+ _SEH_HANDLE
+ {
+ CopyStatus = _SEH_GetExceptionCode();
+ }
+ _SEH_END;
+ }
+ else
+ {
+ memcpy(BaseAddress, Buffer, NumberOfBytesToWrite);
+ }
+ }
+ else
+ {
+ /* Create MDL describing the source buffer. */
+ Mdl = MmCreateMdl(NULL,
+ Buffer,
+ NumberOfBytesToWrite);
+ if (Mdl == NULL)
+ {
+ ObDereferenceObject(Process);
+ return(STATUS_NO_MEMORY);
+ }
+ _SEH_TRY
+ {
+ /* Map the MDL. */
+ MmProbeAndLockPages(Mdl, UserMode, IoReadAccess);
+ }
+ _SEH_HANDLE
+ {
+ CopyStatus = _SEH_GetExceptionCode();
+ }
+ _SEH_END;
+
+ if (NT_SUCCESS(CopyStatus))
+ {
+ /* Copy memory from the mapped MDL into the target buffer. */
+ KeAttachProcess(&Process->Pcb);
+
+ SystemAddress = MmGetSystemAddressForMdl(Mdl);
+ if (PreviousMode != KernelMode)
+ {
+ _SEH_TRY
{
- memcpy(BaseAddress, SystemAddress, NumberOfBytesToWrite);
+ memcpy(BaseAddress, SystemAddress, NumberOfBytesToWrite);
}
- _SEH_HANDLE
+ _SEH_HANDLE
{
- CopyStatus = _SEH_GetExceptionCode();
+ CopyStatus = _SEH_GetExceptionCode();
}
- _SEH_END;
- }
- else
- {
- memcpy(BaseAddress, SystemAddress, NumberOfBytesToWrite);
- }
-
- KeDetachProcess();
- }
-
- /* Free the MDL. */
- if (Mdl->MappedSystemVa != NULL)
- {
- MmUnmapLockedPages(Mdl->MappedSystemVa, Mdl);
- }
- MmUnlockPages(Mdl);
- ExFreePool(Mdl);
- }
- ObDereferenceObject(Process);
-
- if (NT_SUCCESS(CopyStatus) && NumberOfBytesWritten != NULL)
- {
- if (PreviousMode != KernelMode)
- {
- _SEH_TRY
- {
- *NumberOfBytesWritten = NumberOfBytesToWrite;
- }
- _SEH_HANDLE
- {
- Status = _SEH_GetExceptionCode();
- }
- _SEH_END;
- }
- else
- {
- *NumberOfBytesWritten = NumberOfBytesToWrite;
- }
- }
-
- return(NT_SUCCESS(CopyStatus) ? Status : CopyStatus);
+ _SEH_END;
+ }
+ else
+ {
+ memcpy(BaseAddress, SystemAddress, NumberOfBytesToWrite);
+ }
+
+ KeDetachProcess();
+ }
+
+ /* Free the MDL. */
+ if (Mdl->MappedSystemVa != NULL)
+ {
+ MmUnmapLockedPages(Mdl->MappedSystemVa, Mdl);
+ }
+ MmUnlockPages(Mdl);
+ ExFreePool(Mdl);
+ }
+ ObDereferenceObject(Process);
+
+ if (NT_SUCCESS(CopyStatus) && NumberOfBytesWritten != NULL)
+ {
+ if (PreviousMode != KernelMode)
+ {
+ _SEH_TRY
+ {
+ *NumberOfBytesWritten = NumberOfBytesToWrite;
+ }
+ _SEH_HANDLE
+ {
+ Status = _SEH_GetExceptionCode();
+ }
+ _SEH_END;
+ }
+ else
+ {
+ *NumberOfBytesWritten = NumberOfBytesToWrite;
+ }
+ }
+
+ return(NT_SUCCESS(CopyStatus) ? Status : CopyStatus);
}
/*
@@ -937,12 +945,12 @@
PVOID
STDCALL
-MmGetVirtualForPhysical (
+MmGetVirtualForPhysical(
IN PHYSICAL_ADDRESS PhysicalAddress
)
{
- UNIMPLEMENTED;
- return 0;
+ UNIMPLEMENTED;
+ return 0;
}
/* FUNCTION:
@@ -950,19 +958,19 @@
* @unimplemented
*/
PVOID STDCALL
-MmSecureVirtualMemory (PVOID Address,
- SIZE_T Length,
- ULONG Mode)
-{
- /* Only works for user space */
- if (MmHighestUserAddress < Address)
- {
- return NULL;
- }
-
- UNIMPLEMENTED;
-
- return 0;
+MmSecureVirtualMemory(PVOID Address,
+ SIZE_T Length,
+ ULONG Mode)
+{
+ /* Only works for user space */
+ if (MmHighestUserAddress < Address)
+ {
+ return NULL;
+ }
+
+ UNIMPLEMENTED;
+
+ return 0;
}
@@ -973,12 +981,12 @@
VOID STDCALL
MmUnsecureVirtualMemory(PVOID SecureMem)
{
- if (NULL == SecureMem)
- {
- return;
- }
-
- UNIMPLEMENTED;
+ if (NULL == SecureMem)
+ {
+ return;
+ }
+
+ UNIMPLEMENTED;
}
@@ -986,34 +994,34 @@
* @implemented
*/
VOID STDCALL
-ProbeForRead (IN CONST VOID *Address,
+ProbeForRead(IN CONST VOID *Address,
+ IN ULONG Length,
+ IN ULONG Alignment)
+{
+ if (Length != 0)
+ {
+ ASSERT(Alignment == 1 || Alignment == 2 || Alignment == 4 || Alignment == 8);
+
+ if (((ULONG_PTR)Address & (Alignment - 1)) != 0)
+ {
+ ExRaiseStatus (STATUS_DATATYPE_MISALIGNMENT);
+ }
+ else if ((ULONG_PTR)Address + Length - 1 < (ULONG_PTR)Address ||
+ (ULONG_PTR)Address + Length - 1 >= (ULONG_PTR)MmUserProbeAddress)
+ {
+ ExRaiseStatus (STATUS_ACCESS_VIOLATION);
+ }
+ }
+}
+
+
+/*
+ * @implemented
+ */
+VOID STDCALL
+ProbeForWrite(IN PVOID Address,
IN ULONG Length,
IN ULONG Alignment)
-{
- if (Length != 0)
- {
- ASSERT(Alignment == 1 || Alignment == 2 || Alignment == 4 || Alignment == 8);
-
- if (((ULONG_PTR)Address & (Alignment - 1)) != 0)
- {
- ExRaiseStatus (STATUS_DATATYPE_MISALIGNMENT);
- }
- else if ((ULONG_PTR)Address + Length - 1 < (ULONG_PTR)Address ||
- (ULONG_PTR)Address + Length - 1 >= (ULONG_PTR)MmUserProbeAddress)
- {
- ExRaiseStatus (STATUS_ACCESS_VIOLATION);
- }
- }
-}
-
-
-/*
- * @implemented
- */
-VOID STDCALL
-ProbeForWrite (IN PVOID Address,
- IN ULONG Length,
- IN ULONG Alignment)
{
volatile CHAR *Current;
PCHAR Last;
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