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- Delete a process environment in the context of a worker thread

Browse source 
if the caller does not run in the same process which would
  be deleted and if KeAttachProcess was already called.

svn path=/trunk/; revision=5639
This commit is contained in:
Hartmut Birr 2003-08-18 10:20:57 +00:00
parent 8ab6fed82c
commit a11c2e5606
2 changed files with 57 additions and 23 deletions
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17
reactos/ntoskrnl/ob/handle.c
View file

@ -16,7 +16,7 @@
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/* $Id: handle.c,v 1.47 2003/07/10 21:34:29 royce Exp $
/* $Id: handle.c,v 1.48 2003/08/18 10:20:57 hbirr Exp $
*
* COPYRIGHT: See COPYING in the top level directory
* PROJECT: ReactOS kernel
@ -302,7 +302,6 @@ VOID ObCloseAllHandles(PEPROCESS Process)
PHANDLE_BLOCK current;
ULONG i;
PVOID ObjectBody;
BOOLEAN IsProcessHandle;
DPRINT("ObCloseAllHandles(Process %x)\n", Process);
@ -338,16 +337,6 @@ VOID ObCloseAllHandles(PEPROCESS Process)
current->handles[i].ObjectBody = NULL;
KeReleaseSpinLock(&HandleTable->ListLock, oldIrql);
if (Header->ObjectType == PsProcessType)
{
IsProcessHandle = TRUE;
KeDetachProcess();
}
else
{
IsProcessHandle = FALSE;
}
if ((Header->ObjectType != NULL) &&
(Header->ObjectType->Close != NULL))
{
@ -356,10 +345,6 @@ VOID ObCloseAllHandles(PEPROCESS Process)
}
ObDereferenceObject(ObjectBody);
if (IsProcessHandle)
{
KeAttachProcess(Process);
}
KeAcquireSpinLock(&HandleTable->ListLock, &oldIrql);
current_entry = &HandleTable->ListHead;
break;

63
reactos/ntoskrnl/ps/process.c
View file

@ -1,4 +1,4 @@
/* $Id: process.c,v 1.112 2003/08/10 20:33:05 ekohl Exp $
/* $Id: process.c,v 1.113 2003/08/18 10:20:57 hbirr Exp $
*
* COPYRIGHT: See COPYING in the top level directory
* PROJECT: ReactOS kernel
@ -56,6 +56,13 @@ static GENERIC_MAPPING PiProcessMapping = {PROCESS_READ,
static PCREATE_PROCESS_NOTIFY_ROUTINE
PiProcessNotifyRoutine[MAX_PROCESS_NOTIFY_ROUTINE_COUNT];
typedef struct
{
WORK_QUEUE_ITEM WorkQueueItem;
KEVENT Event;
PEPROCESS Process;
BOOLEAN IsWorkerQueue;
} DEL_CONTEXT, *PDEL_CONTEXT;
/* FUNCTIONS *****************************************************************/
@ -84,11 +91,11 @@ PsGetNextProcess(PEPROCESS OldProcess)
EPROCESS,
ProcessListEntry);
}
KeReleaseSpinLock(&PsProcessListLock, oldIrql);
Status = ObReferenceObjectByPointer(NextProcess,
PROCESS_ALL_ACCESS,
PsProcessType,
KernelMode);
KeReleaseSpinLock(&PsProcessListLock, oldIrql);
if (!NT_SUCCESS(Status))
{
CPRINT("PsGetNextProcess(): ObReferenceObjectByPointer failed\n");
@ -287,17 +294,26 @@ PsInitProcessManagment(VOID)
}
VOID STDCALL
PiDeleteProcess(PVOID ObjectBody)
PiDeleteProcessWorker(PVOID pContext)
{
KIRQL oldIrql;
PEPROCESS Process;
ULONG i;
PCREATE_PROCESS_NOTIFY_ROUTINE NotifyRoutine[MAX_PROCESS_NOTIFY_ROUTINE_COUNT];
ULONG NotifyRoutineCount;
PDEL_CONTEXT Context;
PEPROCESS CurrentProcess;
PEPROCESS Process;
DPRINT("PiDeleteProcess(ObjectBody %x)\n",ObjectBody);
Context = (PDEL_CONTEXT)pContext;
Process = Context->Process;
CurrentProcess = PsGetCurrentProcess();
Process = (PEPROCESS)ObjectBody;
DPRINT("PiDeleteProcess(ObjectBody %x)\n",Process);
if (CurrentProcess != Process)
{
KeAttachProcess(Process);
}
/* Terminate Win32 Process */
PsTerminateWin32Process (Process);
@ -328,9 +344,42 @@ PiDeleteProcess(PVOID ObjectBody)
ObDereferenceObject(Process->Token);
ObDeleteHandleTable(Process);
(VOID)MmReleaseMmInfo(Process);
if (CurrentProcess != Process)
{
KeDetachProcess();
}
MmReleaseMmInfo(Process);
if (Context->IsWorkerQueue)
{
KeSetEvent(&Context->Event, IO_NO_INCREMENT, FALSE);
}
}
VOID STDCALL
PiDeleteProcess(PVOID ObjectBody)
{
DEL_CONTEXT Context;
Context.Process = (PEPROCESS)ObjectBody;
if (PsGetCurrentProcess() == Context.Process || PsGetCurrentThread()->OldProcess == NULL)
{
Context.IsWorkerQueue = FALSE;
PiDeleteProcessWorker(&Context);
}
else
{
Context.IsWorkerQueue = TRUE;
KeInitializeEvent(&Context.Event, NotificationEvent, FALSE);
ExInitializeWorkItem (&Context.WorkQueueItem, PiDeleteProcessWorker, &Context);
ExQueueWorkItem(&Context.WorkQueueItem, HyperCriticalWorkQueue);
if (KeReadStateEvent(&Context.Event) == 0)
{
KeWaitForSingleObject(&Context.Event, Executive, KernelMode, FALSE, NULL);
}
}
}
static NTSTATUS
PsCreatePeb(HANDLE ProcessHandle,