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- Major formatting cleanup and optimizations to NtQueryInformationProcess so that it does not burn the eyes of anyone that might attempt to read it.
svn path=/trunk/; revision=23175
This commit is contained in:
Alex Ionescu
parent
69995705e9
commit
2278c2914f
1 changed files with 321 additions and 298 deletions
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@ -16,10 +16,65 @@
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/* Include Information Class Tables */
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/* Include Information Class Tables */
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#include "internal/ps_i.h"
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#include "internal/ps_i.h"
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/* FUNCTIONS *****************************************************************/
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/* PRIVATE FUNCTIONS *********************************************************/
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/* FIXME:
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* This entire API is messed up because:
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* 1) Directly pokes SECTION_OBJECT/FILE_OBJECT without special reffing.
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* 2) Ignores SeAuditProcessImageFileName stuff added in XP (and ROS).
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* 3) Doesn't use ObQueryNameString.
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*/
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NTSTATUS
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NTAPI
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PspGetImagePath(IN PEPROCESS Process,
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OUT PUNICODE_STRING DstPath,
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IN ULONG ProcessInformationLength)
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{
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NTSTATUS Status;
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ULONG ImagePathLen = 0;
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PROS_SECTION_OBJECT Section;
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PWSTR SrcBuffer = NULL, DstBuffer = (PWSTR)(DstPath + 1);
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Section = (PROS_SECTION_OBJECT)Process->SectionObject;
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if ((Section)&& (Section->FileObject))
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{
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/* FIXME - check for SEC_IMAGE and/or SEC_FILE instead
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of relying on FileObject being != NULL? */
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SrcBuffer = Section->FileObject->FileName.Buffer;
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if (SrcBuffer) ImagePathLen = Section->FileObject->FileName.Length;
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}
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if (ProcessInformationLength < (sizeof(UNICODE_STRING) +
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ImagePathLen +
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sizeof(WCHAR)))
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{
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return STATUS_INFO_LENGTH_MISMATCH;
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}
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Status = STATUS_SUCCESS;
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_SEH_TRY
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{
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/* copy the string manually, don't use RtlCopyUnicodeString with DstPath! */
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DstPath->Length = ImagePathLen;
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DstPath->MaximumLength = ImagePathLen + sizeof(WCHAR);
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DstPath->Buffer = DstBuffer;
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if (ImagePathLen) RtlCopyMemory(DstBuffer, SrcBuffer, ImagePathLen);
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DstBuffer[ImagePathLen / sizeof(WCHAR)] = L'\0';
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}
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_SEH_HANDLE
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{
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Status = _SEH_GetExceptionCode();
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}
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_SEH_END;
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/* Return status */
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return Status;
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}
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/* PUBLIC FUNCTIONS **********************************************************/
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/*
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/*
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* @unimplemented
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* @implemented
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*/
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*/
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NTSTATUS
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NTSTATUS
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NTAPI
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NTAPI
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@ -27,11 +82,21 @@ NtQueryInformationProcess(IN HANDLE ProcessHandle,
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IN PROCESSINFOCLASS ProcessInformationClass,
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IN PROCESSINFOCLASS ProcessInformationClass,
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OUT PVOID ProcessInformation,
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OUT PVOID ProcessInformation,
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IN ULONG ProcessInformationLength,
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IN ULONG ProcessInformationLength,
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OUT PULONG ReturnLength OPTIONAL)
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OUT PULONG ReturnLength OPTIONAL)
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{
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{
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PEPROCESS Process;
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PEPROCESS Process;
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KPROCESSOR_MODE PreviousMode = ExGetPreviousMode();
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KPROCESSOR_MODE PreviousMode = ExGetPreviousMode();
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NTSTATUS Status = STATUS_SUCCESS;
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NTSTATUS Status = STATUS_SUCCESS;
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ULONG Length = 0;
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PPROCESS_BASIC_INFORMATION ProcessBasicInfo =
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(PPROCESS_BASIC_INFORMATION)ProcessInformation;
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PKERNEL_USER_TIMES ProcessTime = (PKERNEL_USER_TIMES)ProcessInformation;
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ULONG HandleCount;
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PPROCESS_SESSION_INFORMATION SessionInfo =
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(PPROCESS_SESSION_INFORMATION)ProcessInformation;
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PVM_COUNTERS VmCounters = (PVM_COUNTERS)ProcessInformation;
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PROCESS_DEVICEMAP_INFORMATION DeviceMap;
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ULONG Cookie;
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PAGED_CODE();
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PAGED_CODE();
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/* Check validity of Information Class */
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/* Check validity of Information Class */
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@ -42,108 +107,113 @@ NtQueryInformationProcess(IN HANDLE ProcessHandle,
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ProcessInformationLength,
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ProcessInformationLength,
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ReturnLength,
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ReturnLength,
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PreviousMode);
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PreviousMode);
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if (!NT_SUCCESS(Status))
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if (!NT_SUCCESS(Status)) return Status;
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{
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DPRINT1("NtQueryInformationProcess() failed, Status: 0x%x\n", Status);
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return Status;
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}
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/* Check if this isn't the cookie class */
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if(ProcessInformationClass != ProcessCookie)
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if(ProcessInformationClass != ProcessCookie)
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{
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{
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/* Reference the process */
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Status = ObReferenceObjectByHandle(ProcessHandle,
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Status = ObReferenceObjectByHandle(ProcessHandle,
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PROCESS_QUERY_INFORMATION,
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PROCESS_QUERY_INFORMATION,
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PsProcessType,
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PsProcessType,
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PreviousMode,
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PreviousMode,
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(PVOID*)&Process,
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(PVOID*)&Process,
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NULL);
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NULL);
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if (!NT_SUCCESS(Status)) return(Status);
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if (!NT_SUCCESS(Status)) return Status;
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}
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}
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else if(ProcessHandle != NtCurrentProcess())
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else if(ProcessHandle != NtCurrentProcess())
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{
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{
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/* retreiving the process cookie is only allowed for the calling process
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/*
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itself! XP only allowes NtCurrentProcess() as process handles even if a
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* Retreiving the process cookie is only allowed for the calling process
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real handle actually represents the current process. */
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* itself! XP only allowes NtCurrentProcess() as process handles even if
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* a real handle actually represents the current process.
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*/
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return STATUS_INVALID_PARAMETER;
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return STATUS_INVALID_PARAMETER;
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}
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}
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/* Check the information class */
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switch (ProcessInformationClass)
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switch (ProcessInformationClass)
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{
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{
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/* Basic process information */
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case ProcessBasicInformation:
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case ProcessBasicInformation:
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/* Protect writes with SEH */
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_SEH_TRY
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{
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{
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PPROCESS_BASIC_INFORMATION ProcessBasicInformationP =
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/* Write all the information from the EPROCESS/KPROCESS */
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(PPROCESS_BASIC_INFORMATION)ProcessInformation;
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ProcessBasicInfo->ExitStatus = Process->ExitStatus;
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ProcessBasicInfo->PebBaseAddress = Process->Peb;
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ProcessBasicInfo->AffinityMask = Process->Pcb.Affinity;
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ProcessBasicInfo->UniqueProcessId = (ULONG)Process->
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UniqueProcessId;
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ProcessBasicInfo->InheritedFromUniqueProcessId =
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(ULONG)Process->InheritedFromUniqueProcessId;
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ProcessBasicInfo->BasePriority = Process->Pcb.BasePriority;
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_SEH_TRY
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/* Set return length */
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{
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Length = sizeof(PROCESS_BASIC_INFORMATION);
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ProcessBasicInformationP->ExitStatus = Process->ExitStatus;
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ProcessBasicInformationP->PebBaseAddress = Process->Peb;
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ProcessBasicInformationP->AffinityMask = Process->Pcb.Affinity;
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ProcessBasicInformationP->UniqueProcessId =
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(ULONG)Process->UniqueProcessId;
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ProcessBasicInformationP->InheritedFromUniqueProcessId =
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(ULONG)Process->InheritedFromUniqueProcessId;
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ProcessBasicInformationP->BasePriority =
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Process->Pcb.BasePriority;
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if (ReturnLength)
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{
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*ReturnLength = sizeof(PROCESS_BASIC_INFORMATION);
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}
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}
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_SEH_HANDLE
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{
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Status = _SEH_GetExceptionCode();
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}
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_SEH_END;
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break;
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}
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}
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_SEH_HANDLE
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{
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/* Get exception code */
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Status = _SEH_GetExceptionCode();
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}
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_SEH_END;
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break;
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/* Quote limits and I/O Counters: not implemented */
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case ProcessQuotaLimits:
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case ProcessQuotaLimits:
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case ProcessIoCounters:
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case ProcessIoCounters:
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Status = STATUS_NOT_IMPLEMENTED;
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Status = STATUS_NOT_IMPLEMENTED;
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break;
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break;
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/* Timing */
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case ProcessTimes:
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case ProcessTimes:
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/* Protect writes with SEH */
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_SEH_TRY
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{
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{
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PKERNEL_USER_TIMES ProcessTimeP = (PKERNEL_USER_TIMES)ProcessInformation;
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/* Copy time information from EPROCESS/KPROCESS */
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_SEH_TRY
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ProcessTime->CreateTime = Process->CreateTime;
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{
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ProcessTime->UserTime.QuadPart = Process->Pcb.UserTime *
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ProcessTimeP->CreateTime = Process->CreateTime;
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100000LL;
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ProcessTimeP->UserTime.QuadPart = Process->Pcb.UserTime * 100000LL;
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ProcessTime->KernelTime.QuadPart = Process->Pcb.KernelTime *
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ProcessTimeP->KernelTime.QuadPart = Process->Pcb.KernelTime * 100000LL;
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100000LL;
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ProcessTimeP->ExitTime = Process->ExitTime;
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ProcessTime->ExitTime = Process->ExitTime;
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if (ReturnLength)
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/* Set the return length */
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{
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Length = sizeof(KERNEL_USER_TIMES);
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*ReturnLength = sizeof(KERNEL_USER_TIMES);
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}
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}
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_SEH_HANDLE
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{
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Status = _SEH_GetExceptionCode();
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}
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_SEH_END;
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break;
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}
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}
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_SEH_HANDLE
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{
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/* Get exception code */
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Status = _SEH_GetExceptionCode();
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}
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_SEH_END;
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break;
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/* Process Debug Port */
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case ProcessDebugPort:
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case ProcessDebugPort:
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{
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_SEH_TRY
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{
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*(PHANDLE)ProcessInformation = (Process->DebugPort != NULL ? (HANDLE)-1 : NULL);
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if (ReturnLength)
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{
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*ReturnLength = sizeof(HANDLE);
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}
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}
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_SEH_HANDLE
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{
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Status = _SEH_GetExceptionCode();
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}
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_SEH_END;
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break;
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}
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/* Protect write with SEH */
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_SEH_TRY
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{
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/* Return whether or not we have a debug port */
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*(PHANDLE)ProcessInformation = (Process->DebugPort ?
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(HANDLE)-1 : NULL);
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/* Set the return length*/
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Length = sizeof(HANDLE);
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}
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_SEH_HANDLE
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{
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/* Get exception code */
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Status = _SEH_GetExceptionCode();
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}
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_SEH_END;
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break;
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/* LDT, WS and VDM Information: not implemented */
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case ProcessLdtInformation:
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case ProcessLdtInformation:
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case ProcessWorkingSetWatch:
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case ProcessWorkingSetWatch:
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case ProcessWx86Information:
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case ProcessWx86Information:
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@ -151,278 +221,217 @@ NtQueryInformationProcess(IN HANDLE ProcessHandle,
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break;
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break;
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case ProcessHandleCount:
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case ProcessHandleCount:
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/* Count the number of handles this process has */
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HandleCount = ObpGetHandleCountByHandleTable(Process->ObjectTable);
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/* Protect write in SEH */
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_SEH_TRY
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{
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{
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ULONG HandleCount = ObpGetHandleCountByHandleTable(Process->ObjectTable);
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/* Return the count of handles */
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*(PULONG)ProcessInformation = HandleCount;
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_SEH_TRY
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/* Set the return length*/
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{
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Length = sizeof(ULONG);
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*(PULONG)ProcessInformation = HandleCount;
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if (ReturnLength)
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{
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*ReturnLength = sizeof(ULONG);
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}
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}
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_SEH_HANDLE
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{
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Status = _SEH_GetExceptionCode();
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}
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_SEH_END;
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break;
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}
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}
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_SEH_HANDLE
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{
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/* Get the exception code */
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Status = _SEH_GetExceptionCode();
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}
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_SEH_END;
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break;
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/* Session ID for the process */
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case ProcessSessionInformation:
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case ProcessSessionInformation:
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/* Enter SEH for write safety */
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_SEH_TRY
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{
|
{
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PPROCESS_SESSION_INFORMATION SessionInfo = (PPROCESS_SESSION_INFORMATION)ProcessInformation;
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/* Write back the Session ID */
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SessionInfo->SessionId = Process->Session;
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_SEH_TRY
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/* Set the return length */
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{
|
Length = sizeof(PROCESS_SESSION_INFORMATION);
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SessionInfo->SessionId = Process->Session;
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if (ReturnLength)
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{
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*ReturnLength = sizeof(PROCESS_SESSION_INFORMATION);
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}
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}
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_SEH_HANDLE
|
|
||||||
{
|
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Status = _SEH_GetExceptionCode();
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||||||
}
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_SEH_END;
|
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break;
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|
||||||
}
|
}
|
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|
_SEH_HANDLE
|
||||||
|
{
|
||||||
|
/* Get the exception code */
|
||||||
|
Status = _SEH_GetExceptionCode();
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||||||
|
}
|
||||||
|
_SEH_END;
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|
break;
|
||||||
|
|
||||||
|
/* WOW64: Not implemented */
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case ProcessWow64Information:
|
case ProcessWow64Information:
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DPRINT1("We currently don't support the ProcessWow64Information information class!\n");
|
|
||||||
Status = STATUS_NOT_IMPLEMENTED;
|
Status = STATUS_NOT_IMPLEMENTED;
|
||||||
break;
|
break;
|
||||||
|
|
||||||
|
/* Virtual Memory Statistics */
|
||||||
case ProcessVmCounters:
|
case ProcessVmCounters:
|
||||||
|
|
||||||
|
/* Enter SEH for write safety */
|
||||||
|
_SEH_TRY
|
||||||
{
|
{
|
||||||
PVM_COUNTERS pOut = (PVM_COUNTERS)ProcessInformation;
|
/* Return data from EPROCESS */
|
||||||
|
VmCounters->PeakVirtualSize = Process->PeakVirtualSize;
|
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|
VmCounters->VirtualSize = Process->VirtualSize;
|
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|
VmCounters->PageFaultCount = Process->Vm.PageFaultCount;
|
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|
VmCounters->PeakWorkingSetSize = Process->Vm.PeakWorkingSetSize;
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|
VmCounters->WorkingSetSize = Process->Vm.WorkingSetSize;
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|
VmCounters->QuotaPeakPagedPoolUsage = Process->QuotaPeak[0];
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|
VmCounters->QuotaPagedPoolUsage = Process->QuotaUsage[0];
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|
VmCounters->QuotaPeakNonPagedPoolUsage = Process->QuotaPeak[1];
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|
VmCounters->QuotaNonPagedPoolUsage = Process->QuotaUsage[1];
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|
VmCounters->PagefileUsage = Process->QuotaUsage[2];
|
||||||
|
VmCounters->PeakPagefileUsage = Process->QuotaPeak[2];
|
||||||
|
|
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_SEH_TRY
|
/* Set the return length */
|
||||||
{
|
*ReturnLength = sizeof(VM_COUNTERS);
|
||||||
pOut->PeakVirtualSize = Process->PeakVirtualSize;
|
|
||||||
/*
|
|
||||||
* Here we should probably use VirtualSize.LowPart, but due to
|
|
||||||
* incompatibilities in current headers (no unnamed union),
|
|
||||||
* I opted for cast.
|
|
||||||
*/
|
|
||||||
pOut->VirtualSize = (ULONG)Process->VirtualSize;
|
|
||||||
pOut->PageFaultCount = Process->Vm.PageFaultCount;
|
|
||||||
pOut->PeakWorkingSetSize = Process->Vm.PeakWorkingSetSize;
|
|
||||||
pOut->WorkingSetSize = Process->Vm.WorkingSetSize;
|
|
||||||
pOut->QuotaPeakPagedPoolUsage = Process->QuotaPeak[0]; // TODO: Verify!
|
|
||||||
pOut->QuotaPagedPoolUsage = Process->QuotaUsage[0]; // TODO: Verify!
|
|
||||||
pOut->QuotaPeakNonPagedPoolUsage = Process->QuotaPeak[1]; // TODO: Verify!
|
|
||||||
pOut->QuotaNonPagedPoolUsage = Process->QuotaUsage[1]; // TODO: Verify!
|
|
||||||
pOut->PagefileUsage = Process->QuotaUsage[2];
|
|
||||||
pOut->PeakPagefileUsage = Process->QuotaPeak[2];
|
|
||||||
|
|
||||||
if (ReturnLength)
|
|
||||||
{
|
|
||||||
*ReturnLength = sizeof(VM_COUNTERS);
|
|
||||||
}
|
|
||||||
}
|
|
||||||
_SEH_HANDLE
|
|
||||||
{
|
|
||||||
Status = _SEH_GetExceptionCode();
|
|
||||||
}
|
|
||||||
_SEH_END;
|
|
||||||
break;
|
|
||||||
}
|
}
|
||||||
|
_SEH_HANDLE
|
||||||
|
{
|
||||||
|
/* Get the exception code */
|
||||||
|
Status = _SEH_GetExceptionCode();
|
||||||
|
}
|
||||||
|
_SEH_END;
|
||||||
|
break;
|
||||||
|
|
||||||
|
/* Hard Error Processing Mode */
|
||||||
case ProcessDefaultHardErrorMode:
|
case ProcessDefaultHardErrorMode:
|
||||||
{
|
|
||||||
PULONG HardErrMode = (PULONG)ProcessInformation;
|
|
||||||
_SEH_TRY
|
|
||||||
{
|
|
||||||
*HardErrMode = Process->DefaultHardErrorProcessing;
|
|
||||||
if (ReturnLength)
|
|
||||||
{
|
|
||||||
*ReturnLength = sizeof(ULONG);
|
|
||||||
}
|
|
||||||
}
|
|
||||||
_SEH_HANDLE
|
|
||||||
{
|
|
||||||
Status = _SEH_GetExceptionCode();
|
|
||||||
}
|
|
||||||
_SEH_END;
|
|
||||||
break;
|
|
||||||
}
|
|
||||||
|
|
||||||
|
/* Enter SEH for writing back data */
|
||||||
|
_SEH_TRY
|
||||||
|
{
|
||||||
|
/* Write the current processing mode */
|
||||||
|
*(PULONG)ProcessInformation = Process->
|
||||||
|
DefaultHardErrorProcessing;
|
||||||
|
|
||||||
|
/* Set the return length */
|
||||||
|
Length = sizeof(ULONG);
|
||||||
|
}
|
||||||
|
_SEH_HANDLE
|
||||||
|
{
|
||||||
|
/* Get the exception code */
|
||||||
|
Status = _SEH_GetExceptionCode();
|
||||||
|
}
|
||||||
|
_SEH_END;
|
||||||
|
break;
|
||||||
|
|
||||||
|
/* Priority Boosting status */
|
||||||
case ProcessPriorityBoost:
|
case ProcessPriorityBoost:
|
||||||
|
|
||||||
|
/* Enter SEH for writing back data */
|
||||||
|
_SEH_TRY
|
||||||
{
|
{
|
||||||
PULONG BoostEnabled = (PULONG)ProcessInformation;
|
/* Return boost status */
|
||||||
|
*(PULONG)ProcessInformation = Process->Pcb.DisableBoost ?
|
||||||
|
FALSE : TRUE;
|
||||||
|
|
||||||
_SEH_TRY
|
/* Set the return length */
|
||||||
{
|
Length = sizeof(ULONG);
|
||||||
*BoostEnabled = Process->Pcb.DisableBoost ? FALSE : TRUE;
|
|
||||||
|
|
||||||
if (ReturnLength)
|
|
||||||
{
|
|
||||||
*ReturnLength = sizeof(ULONG);
|
|
||||||
}
|
|
||||||
}
|
|
||||||
_SEH_HANDLE
|
|
||||||
{
|
|
||||||
Status = _SEH_GetExceptionCode();
|
|
||||||
}
|
|
||||||
_SEH_END;
|
|
||||||
break;
|
|
||||||
}
|
}
|
||||||
|
_SEH_HANDLE
|
||||||
|
{
|
||||||
|
/* Get the exception code */
|
||||||
|
Status = _SEH_GetExceptionCode();
|
||||||
|
}
|
||||||
|
_SEH_END;
|
||||||
|
break;
|
||||||
|
|
||||||
|
/* DOS Device Map */
|
||||||
case ProcessDeviceMap:
|
case ProcessDeviceMap:
|
||||||
|
|
||||||
|
/* Query the device map information */
|
||||||
|
ObQueryDeviceMapInformation(Process, &DeviceMap);
|
||||||
|
|
||||||
|
/* Enter SEH for writing back data */
|
||||||
|
_SEH_TRY
|
||||||
{
|
{
|
||||||
PROCESS_DEVICEMAP_INFORMATION DeviceMap;
|
*(PPROCESS_DEVICEMAP_INFORMATION)ProcessInformation = DeviceMap;
|
||||||
|
|
||||||
ObQueryDeviceMapInformation(Process, &DeviceMap);
|
/* Set the return length */
|
||||||
|
Length = sizeof(PROCESS_DEVICEMAP_INFORMATION);
|
||||||
_SEH_TRY
|
|
||||||
{
|
|
||||||
*(PPROCESS_DEVICEMAP_INFORMATION)ProcessInformation = DeviceMap;
|
|
||||||
if (ReturnLength)
|
|
||||||
{
|
|
||||||
*ReturnLength = sizeof(PROCESS_DEVICEMAP_INFORMATION);
|
|
||||||
}
|
|
||||||
}
|
|
||||||
_SEH_HANDLE
|
|
||||||
{
|
|
||||||
Status = _SEH_GetExceptionCode();
|
|
||||||
}
|
|
||||||
_SEH_END;
|
|
||||||
break;
|
|
||||||
}
|
}
|
||||||
|
_SEH_HANDLE
|
||||||
|
{
|
||||||
|
/* Get the exception code */
|
||||||
|
Status = _SEH_GetExceptionCode();
|
||||||
|
}
|
||||||
|
_SEH_END;
|
||||||
|
break;
|
||||||
|
|
||||||
|
/* Priority class */
|
||||||
case ProcessPriorityClass:
|
case ProcessPriorityClass:
|
||||||
|
|
||||||
|
/* Enter SEH for writing back data */
|
||||||
|
_SEH_TRY
|
||||||
{
|
{
|
||||||
PUSHORT Priority = (PUSHORT)ProcessInformation;
|
/* Return current priority class */
|
||||||
|
*(PUSHORT)ProcessInformation = Process->PriorityClass;
|
||||||
|
|
||||||
_SEH_TRY
|
/* Set the return length */
|
||||||
{
|
Length = sizeof(USHORT);
|
||||||
*Priority = Process->PriorityClass;
|
|
||||||
|
|
||||||
if (ReturnLength)
|
|
||||||
{
|
|
||||||
*ReturnLength = sizeof(USHORT);
|
|
||||||
}
|
|
||||||
}
|
|
||||||
_SEH_HANDLE
|
|
||||||
{
|
|
||||||
Status = _SEH_GetExceptionCode();
|
|
||||||
}
|
|
||||||
_SEH_END;
|
|
||||||
break;
|
|
||||||
}
|
}
|
||||||
|
_SEH_HANDLE
|
||||||
|
{
|
||||||
|
/* Get the exception code */
|
||||||
|
Status = _SEH_GetExceptionCode();
|
||||||
|
}
|
||||||
|
_SEH_END;
|
||||||
|
break;
|
||||||
|
|
||||||
case ProcessImageFileName:
|
case ProcessImageFileName:
|
||||||
{
|
|
||||||
ULONG ImagePathLen = 0;
|
|
||||||
PROS_SECTION_OBJECT Section;
|
|
||||||
PUNICODE_STRING DstPath = (PUNICODE_STRING)ProcessInformation;
|
|
||||||
PWSTR SrcBuffer = NULL, DstBuffer = (PWSTR)(DstPath + 1);
|
|
||||||
|
|
||||||
Section = (PROS_SECTION_OBJECT)Process->SectionObject;
|
/* Get the image path */
|
||||||
|
Status = PspGetImagePath(Process,
|
||||||
if (Section != NULL && Section->FileObject != NULL)
|
(PUNICODE_STRING)ProcessInformation,
|
||||||
{
|
ProcessInformationLength);
|
||||||
/* FIXME - check for SEC_IMAGE and/or SEC_FILE instead
|
break;
|
||||||
of relying on FileObject being != NULL? */
|
|
||||||
SrcBuffer = Section->FileObject->FileName.Buffer;
|
|
||||||
if (SrcBuffer != NULL)
|
|
||||||
{
|
|
||||||
ImagePathLen = Section->FileObject->FileName.Length;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
if(ProcessInformationLength < sizeof(UNICODE_STRING) + ImagePathLen + sizeof(WCHAR))
|
|
||||||
{
|
|
||||||
Status = STATUS_INFO_LENGTH_MISMATCH;
|
|
||||||
}
|
|
||||||
else
|
|
||||||
{
|
|
||||||
_SEH_TRY
|
|
||||||
{
|
|
||||||
/* copy the string manually, don't use RtlCopyUnicodeString with DstPath! */
|
|
||||||
DstPath->Length = ImagePathLen;
|
|
||||||
DstPath->MaximumLength = ImagePathLen + sizeof(WCHAR);
|
|
||||||
DstPath->Buffer = DstBuffer;
|
|
||||||
if (ImagePathLen != 0)
|
|
||||||
{
|
|
||||||
RtlCopyMemory(DstBuffer,
|
|
||||||
SrcBuffer,
|
|
||||||
ImagePathLen);
|
|
||||||
}
|
|
||||||
DstBuffer[ImagePathLen / sizeof(WCHAR)] = L'\0';
|
|
||||||
|
|
||||||
Status = STATUS_SUCCESS;
|
|
||||||
}
|
|
||||||
_SEH_HANDLE
|
|
||||||
{
|
|
||||||
Status = _SEH_GetExceptionCode();
|
|
||||||
}
|
|
||||||
_SEH_END;
|
|
||||||
}
|
|
||||||
break;
|
|
||||||
}
|
|
||||||
|
|
||||||
|
/* Per-process security cookie */
|
||||||
case ProcessCookie:
|
case ProcessCookie:
|
||||||
|
|
||||||
|
/* Get the current process and cookie */
|
||||||
|
Process = PsGetCurrentProcess();
|
||||||
|
Cookie = Process->Cookie;
|
||||||
|
if(!Cookie)
|
||||||
{
|
{
|
||||||
ULONG Cookie;
|
LARGE_INTEGER SystemTime;
|
||||||
|
ULONG NewCookie;
|
||||||
|
PKPRCB Prcb;
|
||||||
|
|
||||||
/* receive the process cookie, this is only allowed for the current
|
/* Generate a new cookie */
|
||||||
process! */
|
KeQuerySystemTime(&SystemTime);
|
||||||
|
Prcb = KeGetCurrentPrcb();
|
||||||
|
NewCookie = Prcb->KeSystemCalls ^ Prcb->InterruptTime ^
|
||||||
|
SystemTime.u.LowPart ^ SystemTime.u.HighPart;
|
||||||
|
|
||||||
Process = PsGetCurrentProcess();
|
/* Set the new cookie or return the current one */
|
||||||
|
Cookie = InterlockedCompareExchange((LONG*)&Process->Cookie,
|
||||||
|
NewCookie,
|
||||||
|
Cookie);
|
||||||
|
if(!Cookie) Cookie = NewCookie;
|
||||||
|
|
||||||
Cookie = Process->Cookie;
|
/* Set return length */
|
||||||
if(Cookie == 0)
|
Length = sizeof(ULONG);
|
||||||
{
|
|
||||||
LARGE_INTEGER SystemTime;
|
|
||||||
ULONG NewCookie;
|
|
||||||
PKPRCB Prcb;
|
|
||||||
|
|
||||||
/* generate a new cookie */
|
|
||||||
|
|
||||||
KeQuerySystemTime(&SystemTime);
|
|
||||||
|
|
||||||
Prcb = KeGetCurrentPrcb();
|
|
||||||
|
|
||||||
NewCookie = Prcb->KeSystemCalls ^ Prcb->InterruptTime ^
|
|
||||||
SystemTime.u.LowPart ^ SystemTime.u.HighPart;
|
|
||||||
|
|
||||||
/* try to set the new cookie, return the current one if another thread
|
|
||||||
set it in the meanwhile */
|
|
||||||
Cookie = InterlockedCompareExchange((LONG*)&Process->Cookie,
|
|
||||||
NewCookie,
|
|
||||||
Cookie);
|
|
||||||
if(Cookie == 0)
|
|
||||||
{
|
|
||||||
/* successfully set the cookie */
|
|
||||||
Cookie = NewCookie;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
_SEH_TRY
|
|
||||||
{
|
|
||||||
*(PULONG)ProcessInformation = Cookie;
|
|
||||||
if (ReturnLength)
|
|
||||||
{
|
|
||||||
*ReturnLength = sizeof(ULONG);
|
|
||||||
}
|
|
||||||
}
|
|
||||||
_SEH_HANDLE
|
|
||||||
{
|
|
||||||
Status = _SEH_GetExceptionCode();
|
|
||||||
}
|
|
||||||
_SEH_END;
|
|
||||||
|
|
||||||
break;
|
|
||||||
}
|
}
|
||||||
|
|
||||||
/*
|
/* Enter SEH to protect write */
|
||||||
* Note: The following 10 information classes are verified to not be
|
_SEH_TRY
|
||||||
* implemented on NT, and do indeed return STATUS_INVALID_INFO_CLASS;
|
{
|
||||||
*/
|
/* Write back the cookie */
|
||||||
|
*(PULONG)ProcessInformation = Cookie;
|
||||||
|
}
|
||||||
|
_SEH_HANDLE
|
||||||
|
{
|
||||||
|
/* Get the exception code */
|
||||||
|
Status = _SEH_GetExceptionCode();
|
||||||
|
}
|
||||||
|
_SEH_END;
|
||||||
|
break;
|
||||||
|
|
||||||
|
/* Not yet implemented, or unknown */
|
||||||
case ProcessBasePriority:
|
case ProcessBasePriority:
|
||||||
case ProcessRaisePriority:
|
case ProcessRaisePriority:
|
||||||
case ProcessExceptionPort:
|
case ProcessExceptionPort:
|
||||||
|
|
@ -437,6 +446,20 @@ NtQueryInformationProcess(IN HANDLE ProcessHandle,
|
||||||
Status = STATUS_INVALID_INFO_CLASS;
|
Status = STATUS_INVALID_INFO_CLASS;
|
||||||
}
|
}
|
||||||
|
|
||||||
|
/* Protect write with SEH */
|
||||||
|
_SEH_TRY
|
||||||
|
{
|
||||||
|
/* Check if caller wanted return length */
|
||||||
|
if (ReturnLength) *ReturnLength = Length;
|
||||||
|
}
|
||||||
|
_SEH_HANDLE
|
||||||
|
{
|
||||||
|
/* Get exception code */
|
||||||
|
Status = _SEH_GetExceptionCode();
|
||||||
|
}
|
||||||
|
_SEH_END;
|
||||||
|
|
||||||
|
/* If we referenced the process, dereference it */
|
||||||
if(ProcessInformationClass != ProcessCookie) ObDereferenceObject(Process);
|
if(ProcessInformationClass != ProcessCookie) ObDereferenceObject(Process);
|
||||||
return Status;
|
return Status;
|
||||||
}
|
}
|
||||||
|
|
|
||||||
Loading…
Add table
Add a link
Reference in a new issue