NTSTATUS
AFSCommonCreate( IN PDEVICE_OBJECT DeviceObject,
IN PIRP Irp)
{
NTSTATUS ntStatus = STATUS_SUCCESS;
FILE_OBJECT *pFileObject = NULL;
IO_STACK_LOCATION *pIrpSp;
AFSDeviceExt *pDeviceExt = NULL;
AFSDeviceExt *pControlDevExt = (AFSDeviceExt *)AFSDeviceObject->DeviceExtension;
GUID *pAuthGroup = NULL;
UNICODE_STRING uniGUIDString;
__Enter
{
pIrpSp = IoGetCurrentIrpStackLocation( Irp);
pDeviceExt = (AFSDeviceExt *)DeviceObject->DeviceExtension;
pFileObject = pIrpSp->FileObject;
uniGUIDString.Buffer = NULL;
uniGUIDString.Length = 0;
uniGUIDString.MaximumLength = 0;
//
// Validate the process entry
//
pAuthGroup = AFSValidateProcessEntry();
if( pAuthGroup != NULL)
{
RtlStringFromGUID( *pAuthGroup,
&uniGUIDString);
AFSDbgLogMsg( AFS_SUBSYSTEM_AUTHGROUP_PROCESSING,
AFS_TRACE_LEVEL_VERBOSE,
"%s (%08lX) Located AuthGroup %wZ after validation\n",
__FUNCTION__,
Irp,
&uniGUIDString);
}
else
{
AFSDbgLogMsg( AFS_SUBSYSTEM_AUTHGROUP_PROCESSING,
AFS_TRACE_LEVEL_VERBOSE,
"%s (%08lX) Failed to locate AuthGroup\n",
__FUNCTION__,
Irp);
}
//
// Root open?
//
if( pFileObject == NULL ||
pFileObject->FileName.Buffer == NULL)
{
AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
AFS_TRACE_LEVEL_VERBOSE,
"AFSCommonCreate (%08lX) Processing volume open request\n",
Irp);
ntStatus = AFSOpenRedirector( Irp);
AFSCompleteRequest( Irp,
ntStatus);
try_return( ntStatus);
}
//
// Check the state of the library
//
ntStatus = AFSCheckLibraryState( Irp);
if( !NT_SUCCESS( ntStatus) ||
ntStatus == STATUS_PENDING)
{
if( ntStatus != STATUS_PENDING)
{
AFSCompleteRequest( Irp, ntStatus);
}
try_return( ntStatus);
}
IoSkipCurrentIrpStackLocation( Irp);
ntStatus = IoCallDriver( pControlDevExt->Specific.Control.LibraryDeviceObject,
Irp);
//
// Indicate the library is done with the request
//
AFSClearLibraryRequest();
try_exit:
if ( pFileObject) {
AFSDbgLogMsg( AFS_SUBSYSTEM_AUTHGROUP_PROCESSING,
AFS_TRACE_LEVEL_VERBOSE,
"%s (%08lX) File \"%wZ\" AuthGroup '%wZ' ntStatus %08lX\n",
__FUNCTION__,
Irp,
&pFileObject->FileName,
&uniGUIDString,
ntStatus);
}
if( uniGUIDString.Buffer != NULL)
{
RtlFreeUnicodeString( &uniGUIDString);
}
}
return ntStatus;
}
void
AFSProcessCreate( IN HANDLE ParentId,
IN HANDLE ProcessId,
IN HANDLE CreatingProcessId,
IN HANDLE CreatingThreadId)
{
AFSDeviceExt *pDeviceExt = (AFSDeviceExt *)AFSDeviceObject->DeviceExtension;
AFSProcessCB *pProcessCB = NULL;
__Enter
{
AFSDbgTrace(( AFS_SUBSYSTEM_LOCK_PROCESSING,
AFS_TRACE_LEVEL_VERBOSE,
"AFSProcessCreate Acquiring Control ProcessTree.TreeLock lock %p EXCL %08lX\n",
pDeviceExt->Specific.Control.ProcessTree.TreeLock,
PsGetCurrentThread()));
AFSAcquireExcl( pDeviceExt->Specific.Control.ProcessTree.TreeLock,
TRUE);
AFSDbgTrace(( AFS_SUBSYSTEM_PROCESS_PROCESSING,
AFS_TRACE_LEVEL_VERBOSE,
"AFSProcessCreate Parent %08lX Process %08lX %08lX\n",
ParentId,
ProcessId,
PsGetCurrentThread()));
pProcessCB = AFSInitializeProcessCB( (ULONGLONG)ParentId,
(ULONGLONG)ProcessId);
if( pProcessCB != NULL)
{
pProcessCB->CreatingProcessId = (ULONGLONG)CreatingProcessId;
pProcessCB->CreatingThreadId = (ULONGLONG)CreatingThreadId;
//
// Now assign the AuthGroup ACE
//
AFSValidateProcessEntry( ProcessId,
TRUE);
}
else
{
AFSDbgTrace(( AFS_SUBSYSTEM_PROCESS_PROCESSING,
AFS_TRACE_LEVEL_ERROR,
"AFSProcessCreate Initialization failure for Parent %08lX Process %08lX %08lX\n",
ParentId,
ProcessId,
PsGetCurrentThread()));
}
AFSReleaseResource( pDeviceExt->Specific.Control.ProcessTree.TreeLock);
}
return;
}
