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revert hackfix (revision 39704)

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svn path=/trunk/; revision=39705
This commit is contained in:
Matthias Kupfer 2009-02-21 22:50:49 +00:00
parent 0ef3ed3fb1
commit c5dfe0ed6f
1 changed files with 141 additions and 179 deletions
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86
reactos/ntoskrnl/ex/sysinfo.c
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@ -701,7 +701,7 @@ QSI_DEF(SystemPathInformation)
/* Class 5 - Process Information */
QSI_DEF(SystemProcessInformation)
{
PSYSTEM_PROCESS_INFORMATION SpiCurrent = NULL;
PSYSTEM_PROCESS_INFORMATION SpiCurrent;
PSYSTEM_THREAD_INFORMATION ThreadInfo;
PEPROCESS Process = NULL, SystemProcess;
PETHREAD CurrentThread;
@ -712,18 +712,11 @@ QSI_DEF(SystemProcessInformation)
PLIST_ENTRY CurrentEntry;
ULONG TotalSize = 0, ThreadsCount;
ULONG TotalUser, TotalKernel;
PUCHAR Current = NULL;
PUCHAR Current;
NTSTATUS Status = STATUS_SUCCESS;
PUNICODE_STRING ProcessImageName;
PWCHAR szSrc;
//1 Write in to bufer
//2 Calc size buffer
//4 Vista compatible
//Flags always start write and calculate size
//For Vista compatible add "| 4"
USHORT OSMode = 1 | 2;
_SEH2_TRY
{
/* scan the process list */
@ -731,34 +724,22 @@ QSI_DEF(SystemProcessInformation)
PSYSTEM_PROCESS_INFORMATION Spi
= (PSYSTEM_PROCESS_INFORMATION) Buffer;
while ((OSMode & 1) || (OSMode & 2))
{
//Vista first cycle only calc size and readonly
if (OSMode & 4 && OSMode & 1)
OSMode ^= 1;
//not exists byffer or size protect write, only calc size
if (OSMode & 1 && ((Size == 0) || (!Buffer)))
OSMode ^= 1;
*ReqSize = sizeof(SYSTEM_PROCESS_INFORMATION);
if (OSMode & 1)
if (Size < sizeof(SYSTEM_PROCESS_INFORMATION))
{
//Only in second cycle and vista compatible
if (TotalSize > 0 && TotalSize > Size)
{
*ReqSize = TotalSize;
_SEH2_YIELD(return STATUS_INFO_LENGTH_MISMATCH); // in case buffer size is too small
}
if (Size > 0)
RtlZeroMemory(Spi, Size);
Current = (PUCHAR) Spi;
SpiCurrent = NULL;
}
SystemProcess = PsIdleProcess;
Process = SystemProcess;
Current = (PUCHAR) Spi;
do
{
SpiCurrent = (PSYSTEM_PROCESS_INFORMATION) Current;
ThreadsCount = 0;
CurrentEntry = Process->ThreadListHead.Flink;
while (CurrentEntry != &Process->ThreadListHead)
@ -772,7 +753,7 @@ QSI_DEF(SystemProcessInformation)
ImageNameLength = 0;
Status = SeLocateProcessImageName(Process, &ProcessImageName);
szSrc = NULL;
if (NT_SUCCESS(Status) && ProcessImageName->Length > 0)
if (NT_SUCCESS(Status))
{
szSrc = (PWCHAR)((PCHAR)ProcessImageName->Buffer + ProcessImageName->Length);
/* Loop the file name*/
@ -796,20 +777,23 @@ QSI_DEF(SystemProcessInformation)
}
/* Round up the image name length as NT does */
ImageNameMaximumLength =
(ImageNameLength > 0 ? ROUND_UP(ImageNameLength+1, 8) : 0);
ImageNameMaximumLength = ROUND_UP(ImageNameLength, 8);
if (OSMode & 2)
TotalSize += CurrentSize + ImageNameMaximumLength;
if ((OSMode & 1) && Buffer && TotalSize <= Size)
if (TotalSize > Size)
{
//Set prev structure NextEntryOffset next structure only exists write buffer
if (SpiCurrent && TotalSize <= Size)
SpiCurrent->NextEntryOffset = Current - (PUCHAR)SpiCurrent;// relative offset to the beginnnig of the next structure
SpiCurrent = (PSYSTEM_PROCESS_INFORMATION) Current;
*ReqSize = TotalSize;
ObDereferenceObject(Process);
/* Release the memory allocated by SeLocateProcessImageName */
if (NT_SUCCESS(Status)) ExFreePool(ProcessImageName);
_SEH2_YIELD(return STATUS_INFO_LENGTH_MISMATCH); // in case buffer size is too small
}
/* Fill system information */
SpiCurrent->NextEntryOffset = CurrentSize + ImageNameMaximumLength; // relative offset to the beginnnig of the next structure
SpiCurrent->NumberOfThreads = ThreadsCount;
SpiCurrent->CreateTime = Process->CreateTime;
SpiCurrent->ImageName.Length = ImageNameLength;
@ -822,6 +806,9 @@ QSI_DEF(SystemProcessInformation)
if (szSrc)
{
RtlCopyMemory(SpiCurrent->ImageName.Buffer, szSrc, SpiCurrent->ImageName.Length);
/* Release the memory allocated by SeLocateProcessImageName */
ExFreePool(ProcessImageName);
}
else if (Process->ImageFileName)
{
@ -878,9 +865,6 @@ QSI_DEF(SystemProcessInformation)
TotalKernel = KeQueryRuntimeProcess(&Process->Pcb, &TotalUser);
SpiCurrent->UserTime.QuadPart = UInt32x32To64(TotalUser, KeMaximumIncrement);
SpiCurrent->KernelTime.QuadPart = UInt32x32To64(TotalKernel, KeMaximumIncrement);
}
/* Release the memory allocated by SeLocateProcessImageName */
if (NT_SUCCESS(Status)) ExFreePool(ProcessImageName);
/* Handle idle process entry */
if (Process == PsIdleProcess) Process = NULL;
@ -889,36 +873,15 @@ QSI_DEF(SystemProcessInformation)
ThreadsCount = 0;
if ((Process == SystemProcess) || (Process == NULL))
{
SpiCurrent->NextEntryOffset = 0;
break;
}
else
{
if (Current)
Current += CurrentSize + ImageNameMaximumLength;
}
} while ((Process != SystemProcess) && (Process != NULL));
//Break parameters information for only calc size
if ((Size == 0) || (!Buffer))
break;
//Stop write in to buffer
if (OSMode & 1)
OSMode ^= 1;
//Only first cycle calc size
if (OSMode & 2)
OSMode ^= 2;
//Vista next cycle write in to Buffer
if (OSMode & 4)
{
OSMode |= 1;
OSMode ^= 4;
}
};
if(Process != NULL)
ObDereferenceObject(Process);
if ((Size == 0) || (!Buffer) || (TotalSize > Size))
Status = STATUS_INFO_LENGTH_MISMATCH;
else
Status = STATUS_SUCCESS;
}
_SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
@ -1925,9 +1888,8 @@ NtQuerySystemInformation(IN SYSTEM_INFORMATION_CLASS SystemInformationClass,
if (PreviousMode != KernelMode)
{
/* SystemKernelDebuggerInformation needs only BOOLEAN alignment */
if (SystemInformation)
ProbeForWrite(SystemInformation, Length, 1);
if (UnsafeResultLength)
if (UnsafeResultLength != NULL)
ProbeForWriteUlong(UnsafeResultLength);
}