ReactOS  0.4.15-dev-2703-g05fb0f1
controller.c File Reference
#include <ntoskrnl.h>
#include <debug.h>
Include dependency graph for controller.c:

Go to the source code of this file.

Functions

VOID NTAPI IoAllocateController (IN PCONTROLLER_OBJECT ControllerObject, IN PDEVICE_OBJECT DeviceObject, IN PDRIVER_CONTROL ExecutionRoutine, IN PVOID Context)
 
PCONTROLLER_OBJECT NTAPI IoCreateController (IN ULONG Size)
 
VOID NTAPI IoDeleteController (IN PCONTROLLER_OBJECT ControllerObject)
 
VOID NTAPI IoFreeController (IN PCONTROLLER_OBJECT ControllerObject)
 

Variables

POBJECT_TYPE IoControllerObjectType
 

Function Documentation

◆ IoAllocateController()

VOID NTAPI IoAllocateController ( IN PCONTROLLER_OBJECT  ControllerObject,
IN PDEVICE_OBJECT  DeviceObject,
IN PDRIVER_CONTROL  ExecutionRoutine,
IN PVOID  Context 
)

Definition at line 25 of file controller.c.

29 {
32 
33  /* Initialize the Wait Context Block */
34  DeviceObject->Queue.Wcb.DeviceContext = Context;
35  DeviceObject->Queue.Wcb.DeviceRoutine = ExecutionRoutine;
36 
37  /* Insert the Device Queue */
38  if (!KeInsertDeviceQueue(&ControllerObject->DeviceWaitQueue,
39  &DeviceObject->Queue.Wcb.WaitQueueEntry))
40  {
41  /* Call the execution routine */
43  DeviceObject->CurrentIrp,
44  NULL,
45  Context);
46 
47  /* Free the controller if this was requested */
48  if (Result == DeallocateObject) IoFreeController(ControllerObject);
49  }
50 }
enum _IO_ALLOCATION_ACTION IO_ALLOCATION_ACTION
#define ASSERT_IRQL_EQUAL(x)
Definition: debug.h:43
_In_ PDEVICE_OBJECT DeviceObject
Definition: wdfdevice.h:2055
_At_(*)(_In_ PWSK_CLIENT Client, _In_opt_ PUNICODE_STRING NodeName, _In_opt_ PUNICODE_STRING ServiceName, _In_opt_ ULONG NameSpace, _In_opt_ GUID *Provider, _In_opt_ PADDRINFOEXW Hints, _Outptr_ PADDRINFOEXW *Result, _In_opt_ PEPROCESS OwningProcess, _In_opt_ PETHREAD OwningThread, _Inout_ PIRP Irp Result)(Mem)) NTSTATUS(WSKAPI *PFN_WSK_GET_ADDRESS_INFO
Definition: wsk.h:426
BOOLEAN NTAPI KeInsertDeviceQueue(IN PKDEVICE_QUEUE DeviceQueue, IN PKDEVICE_QUEUE_ENTRY DeviceQueueEntry)
Definition: devqueue.c:41
#define DISPATCH_LEVEL
Definition: env_spec_w32.h:696
#define NULL
Definition: types.h:112
VOID NTAPI IoFreeController(IN PCONTROLLER_OBJECT ControllerObject)
Definition: controller.c:125
struct tagContext Context
Definition: acpixf.h:1034
_In_ PDEVICE_OBJECT _In_ ULONG _In_ PDRIVER_CONTROL ExecutionRoutine
Definition: iofuncs.h:1397

◆ IoCreateController()

PCONTROLLER_OBJECT NTAPI IoCreateController ( IN ULONG  Size)

Definition at line 57 of file controller.c.

58 {
59  PCONTROLLER_OBJECT Controller;
61  HANDLE Handle;
63  PAGED_CODE();
64 
65  /* Initialize an empty OBA */
67  NULL,
69  NULL,
70  NULL);
71 
72  /* Create the Object */
76  KernelMode,
77  NULL,
78  sizeof(CONTROLLER_OBJECT) + Size,
79  0,
80  0,
81  (PVOID*)&Controller);
82  if (!NT_SUCCESS(Status)) return NULL;
83 
84  /* Insert it */
85  Status = ObInsertObject(Controller,
86  NULL,
88  1,
89  (PVOID*)&Controller,
90  &Handle);
91  if (!NT_SUCCESS(Status)) return NULL;
92 
93  /* Close the dummy handle */
95 
96  /* Zero the Object and set its data */
97  RtlZeroMemory(Controller, sizeof(CONTROLLER_OBJECT) + Size);
98  Controller->Type = IO_TYPE_CONTROLLER;
99  Controller->Size = sizeof(CONTROLLER_OBJECT) + (CSHORT)Size;
100  Controller->ControllerExtension = (Controller + 1);
101 
102  /* Initialize its Queue */
104 
105  /* Return Controller */
106  return Controller;
107 }
IN PUNICODE_STRING IN POBJECT_ATTRIBUTES ObjectAttributes
Definition: conport.c:35
LONG NTSTATUS
Definition: precomp.h:26
VOID NTAPI KeInitializeDeviceQueue(IN PKDEVICE_QUEUE DeviceQueue)
Definition: devqueue.c:22
IN PVOID IN PVOID IN USHORT IN USHORT Size
Definition: pci.h:361
#define OBJ_KERNEL_HANDLE
Definition: winternl.h:231
#define FILE_READ_DATA
Definition: nt_native.h:628
POBJECT_TYPE IoControllerObjectType
Definition: controller.c:16
#define FILE_WRITE_DATA
Definition: nt_native.h:631
NTSTATUS NTAPI ObCreateObject(IN KPROCESSOR_MODE ProbeMode OPTIONAL, IN POBJECT_TYPE Type, IN POBJECT_ATTRIBUTES ObjectAttributes OPTIONAL, IN KPROCESSOR_MODE AccessMode, IN OUT PVOID ParseContext OPTIONAL, IN ULONG ObjectSize, IN ULONG PagedPoolCharge OPTIONAL, IN ULONG NonPagedPoolCharge OPTIONAL, OUT PVOID *Object)
Definition: oblife.c:952
Status
Definition: gdiplustypes.h:24
#define NT_SUCCESS(StatCode)
Definition: apphelp.c:32
#define IO_TYPE_CONTROLLER
struct _CONTROLLER_OBJECT CONTROLLER_OBJECT
KDEVICE_QUEUE DeviceWaitQueue
Definition: iotypes.h:4464
NTSTATUS NTAPI ObCloseHandle(IN HANDLE Handle, IN KPROCESSOR_MODE AccessMode)
Definition: obhandle.c:3375
PVOID ControllerExtension
Definition: iotypes.h:4463
NTSTATUS NTAPI ObInsertObject(IN PVOID Object, IN PACCESS_STATE AccessState OPTIONAL, IN ACCESS_MASK DesiredAccess, IN ULONG ObjectPointerBias, OUT PVOID *NewObject OPTIONAL, OUT PHANDLE Handle)
Definition: obhandle.c:2931
#define NULL
Definition: types.h:112
_In_ HANDLE Handle
Definition: extypes.h:390
#define RtlZeroMemory(Destination, Length)
Definition: typedefs.h:262
#define InitializeObjectAttributes(p, n, a, r, s)
Definition: reg.c:106
short CSHORT
Definition: umtypes.h:127
#define PAGED_CODE()

◆ IoDeleteController()

VOID NTAPI IoDeleteController ( IN PCONTROLLER_OBJECT  ControllerObject)

Definition at line 114 of file controller.c.

115 {
116  /* Just Dereference it */
117  ObDereferenceObject(ControllerObject);
118 }
#define ObDereferenceObject
Definition: obfuncs.h:203

◆ IoFreeController()

VOID NTAPI IoFreeController ( IN PCONTROLLER_OBJECT  ControllerObject)

Definition at line 125 of file controller.c.

126 {
127  PKDEVICE_QUEUE_ENTRY QueueEntry;
130 
131  /* Remove the Queue */
132  QueueEntry = KeRemoveDeviceQueue(&ControllerObject->DeviceWaitQueue);
133  if (QueueEntry)
134  {
135  /* Get the Device Object */
136  DeviceObject = CONTAINING_RECORD(QueueEntry,
138  Queue.Wcb.WaitQueueEntry);
139 
140  /* Call the routine */
141  Result = DeviceObject->Queue.Wcb.DeviceRoutine(DeviceObject,
142  DeviceObject->CurrentIrp,
143  NULL,
144  DeviceObject->
145  Queue.Wcb.DeviceContext);
146  /* Free the controller if this was requested */
147  if (Result == DeallocateObject) IoFreeController(ControllerObject);
148  }
149 }
enum _IO_ALLOCATION_ACTION IO_ALLOCATION_ACTION
_Must_inspect_result_ _In_ WDFDEVICE _In_ PIRP _In_ WDFQUEUE Queue
Definition: wdfdevice.h:2221
_In_ PDEVICE_OBJECT DeviceObject
Definition: wdfdevice.h:2055
_At_(*)(_In_ PWSK_CLIENT Client, _In_opt_ PUNICODE_STRING NodeName, _In_opt_ PUNICODE_STRING ServiceName, _In_opt_ ULONG NameSpace, _In_opt_ GUID *Provider, _In_opt_ PADDRINFOEXW Hints, _Outptr_ PADDRINFOEXW *Result, _In_opt_ PEPROCESS OwningProcess, _In_opt_ PETHREAD OwningThread, _Inout_ PIRP Irp Result)(Mem)) NTSTATUS(WSKAPI *PFN_WSK_GET_ADDRESS_INFO
Definition: wsk.h:426
PFLT_MESSAGE_WAITER_QUEUE CONTAINING_RECORD(Csq, DEVICE_EXTENSION, IrpQueue)) -> WaiterQ.mLock) _IRQL_raises_(DISPATCH_LEVEL) VOID NTAPI FltpAcquireMessageWaiterLock(_In_ PIO_CSQ Csq, _Out_ PKIRQL Irql)
Definition: Messaging.c:560
Definition: ketypes.h:566
PKDEVICE_QUEUE_ENTRY NTAPI KeRemoveDeviceQueue(IN PKDEVICE_QUEUE DeviceQueue)
Definition: devqueue.c:153
#define NULL
Definition: types.h:112
VOID NTAPI IoFreeController(IN PCONTROLLER_OBJECT ControllerObject)
Definition: controller.c:125

Referenced by IoAllocateController().

Variable Documentation

◆ IoControllerObjectType

POBJECT_TYPE IoControllerObjectType

Definition at line 16 of file controller.c.

Referenced by IoCreateController(), and IopCreateObjectTypes().