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Fixed a bug in NtQueryVirtualMemory()

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svn path=/trunk/; revision=982
This commit is contained in:
Eric Kohl 2000-02-06 15:52:04 +00:00
parent 5f71c29e2c
commit ca7bca8f84
1 changed files with 29 additions and 25 deletions
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54
reactos/ntoskrnl/mm/virtual.c
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@ -323,9 +323,9 @@ NTSTATUS STDCALL NtLockVirtualMemory(HANDLE ProcessHandle,
} }
VOID MmChangeAreaProtection(PEPROCESS Process, VOID MmChangeAreaProtection(PEPROCESS Process,
PVOID BaseAddress, PVOID BaseAddress,
ULONG Length, ULONG Length,
ULONG Protect) ULONG Protect)
{ {
ULONG i; ULONG i;
@ -393,24 +393,27 @@ NTSTATUS STDCALL NtProtectVirtualMemory(IN HANDLE ProcessHandle,
} }
NTSTATUS STDCALL NtQueryVirtualMemory(IN HANDLE ProcessHandle, NTSTATUS
IN PVOID Address, STDCALL
IN CINT VirtualMemoryInformationClass, NtQueryVirtualMemory (
OUT PVOID VirtualMemoryInformation, IN HANDLE ProcessHandle,
IN ULONG Length, IN PVOID Address,
OUT PULONG ResultLength) IN CINT VirtualMemoryInformationClass,
OUT PVOID VirtualMemoryInformation,
IN ULONG Length,
OUT PULONG ResultLength
)
{ {
NTSTATUS Status; NTSTATUS Status;
PEPROCESS Process; PEPROCESS Process;
MEMORY_AREA* MemoryArea; MEMORY_AREA* MemoryArea;
#if 0 DPRINT("NtQueryVirtualMemory(ProcessHandle %x, Address %x, "
DbgPrint("NtReadVirtualMemory(ProcessHandle %x, Address %x, " "VirtualMemoryInformationClass %d, VirtualMemoryInformation %x, "
"VirtualMemoryInformationClass %d, VirtualMemoryInformation %x, " "Length %lu ResultLength %x)\n",ProcessHandle,Address,
"Length %lu ResultLength %x)\n",ProcessHandle,Address, VirtualMemoryInformationClass,VirtualMemoryInformation,
VirtualMemoryInformationClass,VirtualMemoryInformation, Length,ResultLength);
Length,ResultLength);
#endif
switch(VirtualMemoryInformationClass) switch(VirtualMemoryInformationClass)
{ {
case MemoryBasicInformation: case MemoryBasicInformation:
@ -421,11 +424,13 @@ NTSTATUS STDCALL NtQueryVirtualMemory(IN HANDLE ProcessHandle,
if (Length < sizeof(MEMORY_BASIC_INFORMATION)) if (Length < sizeof(MEMORY_BASIC_INFORMATION))
{ {
ObDereferenceObject(Process); ObDereferenceObject(Process);
return(STATUS_INFO_LENGTH_MISMATCH); return STATUS_INFO_LENGTH_MISMATCH;
} }
*ResultLength = sizeof(MEMORY_BASIC_INFORMATION); if (ResultLength)
{
*ResultLength = sizeof(MEMORY_BASIC_INFORMATION);
}
Status = ObReferenceObjectByHandle(ProcessHandle, Status = ObReferenceObjectByHandle(ProcessHandle,
PROCESS_QUERY_INFORMATION, PROCESS_QUERY_INFORMATION,
@ -436,7 +441,7 @@ NTSTATUS STDCALL NtQueryVirtualMemory(IN HANDLE ProcessHandle,
if (!NT_SUCCESS(Status)) if (!NT_SUCCESS(Status))
{ {
// DbdPrint("NtQueryVirtualMemory() = %x\n",Status); DPRINT("NtQueryVirtualMemory() = %x\n",Status);
return(Status); return(Status);
} }
@ -446,7 +451,7 @@ NTSTATUS STDCALL NtQueryVirtualMemory(IN HANDLE ProcessHandle,
if (MemoryArea == NULL) if (MemoryArea == NULL)
{ {
Info->State = MEM_FREE; Info->State = MEM_FREE;
DbgPrint("Virtual memory at %p is free.\n", Address); DPRINT("Virtual memory at %p is free.\n", Address);
ObDereferenceObject(Process); ObDereferenceObject(Process);
return (STATUS_SUCCESS); return (STATUS_SUCCESS);
} }
@ -463,17 +468,16 @@ NTSTATUS STDCALL NtQueryVirtualMemory(IN HANDLE ProcessHandle,
Info->BaseAddress = MemoryArea->BaseAddress; Info->BaseAddress = MemoryArea->BaseAddress;
Info->RegionSize = MemoryArea->Length; Info->RegionSize = MemoryArea->Length;
DbgPrint("BaseAddress %p, Length %x\n", DPRINT("BaseAddress %p, RegionSize %x State %x\n",
Info->BaseAddress, Info->RegionSize); Info->BaseAddress, Info->RegionSize, Info->State);
ObDereferenceObject(Process); ObDereferenceObject(Process);
return (STATUS_SUCCESS); return STATUS_SUCCESS;
} }
break; break;
} }
return(STATUS_INVALID_INFO_CLASS); return STATUS_INVALID_INFO_CLASS;
} }