ReactOS 0.4.16-dev-1040-g85afe48
Macros | Functions | Variables
dispatcher.cpp File Reference
#include "private.hpp"
#include <debug.h>
Include dependency graph for dispatcher.cpp:

Go to the source code of this file.

Macros

#define NDEBUG
 

Functions

NTSTATUS NTAPI Dispatch_fnDeviceIoControl (PDEVICE_OBJECT DeviceObject, PIRP Irp)
 
NTSTATUS NTAPI Dispatch_fnRead (PDEVICE_OBJECT DeviceObject, PIRP Irp)
 
NTSTATUS NTAPI Dispatch_fnWrite (PDEVICE_OBJECT DeviceObject, PIRP Irp)
 
NTSTATUS NTAPI Dispatch_fnFlush (PDEVICE_OBJECT DeviceObject, PIRP Irp)
 
NTSTATUS NTAPI Dispatch_fnClose (PDEVICE_OBJECT DeviceObject, PIRP Irp)
 
NTSTATUS NTAPI Dispatch_fnQuerySecurity (PDEVICE_OBJECT DeviceObject, PIRP Irp)
 
NTSTATUS NTAPI Dispatch_fnSetSecurity (PDEVICE_OBJECT DeviceObject, PIRP Irp)
 
BOOLEAN NTAPI Dispatch_fnFastDeviceIoControl (PFILE_OBJECT FileObject, BOOLEAN Wait, PVOID InputBuffer, ULONG InputBufferLength, PVOID OutputBuffer, ULONG OutputBufferLength, ULONG IoControlCode, PIO_STATUS_BLOCK IoStatus, PDEVICE_OBJECT DeviceObject)
 
BOOLEAN NTAPI Dispatch_fnFastRead (PFILE_OBJECT FileObject, PLARGE_INTEGER FileOffset, ULONG Length, BOOLEAN Wait, ULONG LockKey, PVOID Buffer, PIO_STATUS_BLOCK IoStatus, PDEVICE_OBJECT DeviceObject)
 
BOOLEAN NTAPI Dispatch_fnFastWrite (PFILE_OBJECT FileObject, PLARGE_INTEGER FileOffset, ULONG Length, BOOLEAN Wait, ULONG LockKey, PVOID Buffer, PIO_STATUS_BLOCK IoStatus, PDEVICE_OBJECT DeviceObject)
 
NTSTATUS NTAPI NewDispatchObject (IN PIRP Irp, IN IIrpTarget *Target, IN ULONG CreateItemCount, IN PKSOBJECT_CREATE_ITEM CreateItem)
 

Variables

static KSDISPATCH_TABLE DispatchTable
 

Macro Definition Documentation

◆ NDEBUG

#define NDEBUG

Definition at line 11 of file dispatcher.cpp.

Function Documentation

◆ Dispatch_fnClose()

NTSTATUS NTAPI Dispatch_fnClose ( PDEVICE_OBJECT  DeviceObject,
PIRP  Irp 
)

Definition at line 92 of file dispatcher.cpp.

95{
96 PIO_STACK_LOCATION IoStack;
97 PDISPATCH_CONTEXT DispatchContext;
98 NTSTATUS Status;
99
100 // get current irp stack
101 IoStack = IoGetCurrentIrpStackLocation(Irp);
102 // get dispatch context
103 DispatchContext = (PDISPATCH_CONTEXT)IoStack->FileObject->FsContext;
104
105 // let IrpTarget handle request
106 Status = DispatchContext->Target->Close(DeviceObject, Irp);
107
108 if (NT_SUCCESS(Status))
109 {
110 KsFreeObjectHeader(DispatchContext->ObjectHeader);
111 FreeItem(DispatchContext, TAG_PORTCLASS);
112 }
113 // done
114 return Status;
115}
IoGetCurrentIrpStackLocation
static PIO_STACK_LOCATION IoGetCurrentIrpStackLocation(PIRP Irp)
Definition: Bus_PDO_EvalMethod.c:150
NTSTATUS
LONG NTSTATUS
Definition: precomp.h:26
Irp
_In_ PIRP Irp
Definition: csq.h:116
NT_SUCCESS
#define NT_SUCCESS(StatCode)
Definition: apphelp.c:33
KsFreeObjectHeader
KSDDKAPI VOID NTAPI KsFreeObjectHeader(IN PVOID Header)
Definition: api.c:720
Status
Status
Definition: gdiplustypes.h:25
FreeItem
VOID FreeItem(IN PVOID Item)
Definition: misc.c:37
PDISPATCH_CONTEXT
struct DISPATCH_CONTEXT * PDISPATCH_CONTEXT
TAG_PORTCLASS
#define TAG_PORTCLASS
Definition: private.hpp:24
DISPATCH_CONTEXT
Definition: private.hpp:436
_IO_STACK_LOCATION
Definition: Bus_PDO_EvalMethod.c:93
_IO_STACK_LOCATION::FileObject
PFILE_OBJECT FileObject
Definition: iotypes.h:3169
DeviceObject
_In_ PDEVICE_OBJECT DeviceObject
Definition: wdfdevice.h:2055
DispatchContext
_In_ UCHAR _In_ UCHAR _In_ ULONG _In_ WDFCONTEXT _Inout_ PIRP _In_ WDFCONTEXT DispatchContext
Definition: wdfdevice.h:1708

◆ Dispatch_fnDeviceIoControl()

NTSTATUS NTAPI Dispatch_fnDeviceIoControl ( PDEVICE_OBJECT  DeviceObject,
PIRP  Irp 
)

Definition at line 16 of file dispatcher.cpp.

19{
20 PIO_STACK_LOCATION IoStack;
21 PDISPATCH_CONTEXT DispatchContext;
22
23 // get current irp stack
24 IoStack = IoGetCurrentIrpStackLocation(Irp);
25
26 // get dispatch context
27 DispatchContext = (PDISPATCH_CONTEXT)IoStack->FileObject->FsContext;
28
29 // let IrpTarget handle request
30 return DispatchContext->Target->DeviceIoControl(DeviceObject, Irp);
31}

◆ Dispatch_fnFastDeviceIoControl()

BOOLEAN NTAPI Dispatch_fnFastDeviceIoControl ( PFILE_OBJECT  FileObject,
BOOLEAN  Wait,
PVOID  InputBuffer,
ULONG  InputBufferLength,
PVOID  OutputBuffer,
ULONG  OutputBufferLength,
ULONG  IoControlCode,
PIO_STATUS_BLOCK  IoStatus,
PDEVICE_OBJECT  DeviceObject 
)

Definition at line 157 of file dispatcher.cpp.

167{
168 PDISPATCH_CONTEXT DispatchContext;
169
170 // get dispatch context
171 DispatchContext = (PDISPATCH_CONTEXT)FileObject->FsContext;
172
173 // let IrpTarget handle request
174 return DispatchContext->Target->FastDeviceIoControl(FileObject, Wait, InputBuffer, InputBufferLength, OutputBuffer, OutputBufferLength, IoControlCode, IoStatus, DeviceObject);
175}
IoStatus
__in UCHAR __in POWER_STATE __in_opt PVOID __in PIO_STATUS_BLOCK IoStatus
Definition: mxum.h:159
FileObject
_In_ WDFREQUEST _In_ WDFFILEOBJECT FileObject
Definition: wdfdevice.h:550
Wait
_In_ WDFDPC _In_ BOOLEAN Wait
Definition: wdfdpc.h:170
IoControlCode
_In_ WDFREQUEST _In_ size_t _In_ size_t _In_ ULONG IoControlCode
Definition: wdfio.h:325
OutputBufferLength
_In_ WDFREQUEST _In_ size_t OutputBufferLength
Definition: wdfio.h:320
InputBufferLength
_In_ WDFREQUEST _In_ size_t _In_ size_t InputBufferLength
Definition: wdfio.h:322
OutputBuffer
_Must_inspect_result_ _In_ WDFIOTARGET _In_opt_ WDFREQUEST _In_opt_ PWDF_MEMORY_DESCRIPTOR OutputBuffer
Definition: wdfiotarget.h:863
InputBuffer
_Must_inspect_result_ _In_ WDFIOTARGET _In_opt_ WDFREQUEST _In_opt_ PWDF_MEMORY_DESCRIPTOR InputBuffer
Definition: wdfiotarget.h:953

◆ Dispatch_fnFastRead()

BOOLEAN NTAPI Dispatch_fnFastRead ( PFILE_OBJECT  FileObject,
PLARGE_INTEGER  FileOffset,
ULONG  Length,
BOOLEAN  Wait,
ULONG  LockKey,
PVOID  Buffer,
PIO_STATUS_BLOCK  IoStatus,
PDEVICE_OBJECT  DeviceObject 
)

Definition at line 179 of file dispatcher.cpp.

188{
189 PDISPATCH_CONTEXT DispatchContext;
190
191 // get dispatch context
192 DispatchContext = (PDISPATCH_CONTEXT)FileObject->FsContext;
193
194 // let IrpTarget handle request
195 return DispatchContext->Target->FastRead(FileObject, FileOffset, Length, Wait, LockKey, Buffer, IoStatus, DeviceObject);
196}
FileOffset
_In_ PFCB _In_ LONGLONG FileOffset
Definition: cdprocs.h:160
Buffer
Definition: bufpool.h:45
LockKey
IN PLARGE_INTEGER IN ULONG IN BOOLEAN IN ULONG LockKey
Definition: fatprocs.h:2666
Length
_In_ ULONG _In_ ULONG _In_ ULONG Length
Definition: ntddpcm.h:102

◆ Dispatch_fnFastWrite()

BOOLEAN NTAPI Dispatch_fnFastWrite ( PFILE_OBJECT  FileObject,
PLARGE_INTEGER  FileOffset,
ULONG  Length,
BOOLEAN  Wait,
ULONG  LockKey,
PVOID  Buffer,
PIO_STATUS_BLOCK  IoStatus,
PDEVICE_OBJECT  DeviceObject 
)

Definition at line 200 of file dispatcher.cpp.

209{
210 PDISPATCH_CONTEXT DispatchContext;
211
212 // get dispatch context
213 DispatchContext = (PDISPATCH_CONTEXT)FileObject->FsContext;
214 // let IrpTarget handle request
215 return DispatchContext->Target->FastWrite(FileObject, FileOffset, Length, Wait, LockKey, Buffer, IoStatus, DeviceObject);
216}

◆ Dispatch_fnFlush()

NTSTATUS NTAPI Dispatch_fnFlush ( PDEVICE_OBJECT  DeviceObject,
PIRP  Irp 
)

Definition at line 73 of file dispatcher.cpp.

76{
77 PIO_STACK_LOCATION IoStack;
78 PDISPATCH_CONTEXT DispatchContext;
79
80 // get current irp stack
81 IoStack = IoGetCurrentIrpStackLocation(Irp);
82
83 // get dispatch context
84 DispatchContext = (PDISPATCH_CONTEXT)IoStack->FileObject->FsContext;
85
86 // let IrpTarget handle request
87 return DispatchContext->Target->Flush(DeviceObject, Irp);
88}

◆ Dispatch_fnQuerySecurity()

NTSTATUS NTAPI Dispatch_fnQuerySecurity ( PDEVICE_OBJECT  DeviceObject,
PIRP  Irp 
)

Definition at line 119 of file dispatcher.cpp.

122{
123 PIO_STACK_LOCATION IoStack;
124 PDISPATCH_CONTEXT DispatchContext;
125
126 // get current irp stack
127 IoStack = IoGetCurrentIrpStackLocation(Irp);
128
129 // get dispatch context
130 DispatchContext = (PDISPATCH_CONTEXT)IoStack->FileObject->FsContext;
131
132 // let IrpTarget handle request
133 return DispatchContext->Target->QuerySecurity(DeviceObject, Irp);
134}

◆ Dispatch_fnRead()

NTSTATUS NTAPI Dispatch_fnRead ( PDEVICE_OBJECT  DeviceObject,
PIRP  Irp 
)

Definition at line 35 of file dispatcher.cpp.

38{
39 PIO_STACK_LOCATION IoStack;
40 PDISPATCH_CONTEXT DispatchContext;
41
42 // get current irp stack
43 IoStack = IoGetCurrentIrpStackLocation(Irp);
44
45 // get dispatch context
46 DispatchContext = (PDISPATCH_CONTEXT)IoStack->FileObject->FsContext;
47
48 // let IrpTarget handle request
49 return DispatchContext->Target->Read(DeviceObject, Irp);
50}

◆ Dispatch_fnSetSecurity()

NTSTATUS NTAPI Dispatch_fnSetSecurity ( PDEVICE_OBJECT  DeviceObject,
PIRP  Irp 
)

Definition at line 138 of file dispatcher.cpp.

141{
142 PIO_STACK_LOCATION IoStack;
143 PDISPATCH_CONTEXT DispatchContext;
144
145 // get current irp stack
146 IoStack = IoGetCurrentIrpStackLocation(Irp);
147
148 // get dispatch context
149 DispatchContext = (PDISPATCH_CONTEXT)IoStack->FileObject->FsContext;
150
151 // let IrpTarget handle request
152 return DispatchContext->Target->SetSecurity(DeviceObject, Irp);
153}

◆ Dispatch_fnWrite()

NTSTATUS NTAPI Dispatch_fnWrite ( PDEVICE_OBJECT  DeviceObject,
PIRP  Irp 
)

Definition at line 54 of file dispatcher.cpp.

57{
58 PIO_STACK_LOCATION IoStack;
59 PDISPATCH_CONTEXT DispatchContext;
60
61 // get current irp stack
62 IoStack = IoGetCurrentIrpStackLocation(Irp);
63
64 // get dispatch context
65 DispatchContext = (PDISPATCH_CONTEXT)IoStack->FileObject->FsContext;
66
67 // let IrpTarget handle request
68 return DispatchContext->Target->Write(DeviceObject, Irp);
69}

◆ NewDispatchObject()

NTSTATUS NTAPI NewDispatchObject ( IN PIRP  Irp,
IN IIrpTarget *  Target,
IN ULONG  CreateItemCount,
IN PKSOBJECT_CREATE_ITEM  CreateItem 
)

Definition at line 234 of file dispatcher.cpp.

239{
240 NTSTATUS Status;
241 KSOBJECT_HEADER ObjectHeader;
242 PIO_STACK_LOCATION IoStack;
243 PDISPATCH_CONTEXT DispatchContext;
244
245 // get current irp stack location
246 IoStack = IoGetCurrentIrpStackLocation(Irp);
247
248 DispatchContext = (PDISPATCH_CONTEXT)AllocateItem(NonPagedPool, sizeof(DISPATCH_CONTEXT), TAG_PORTCLASS);
249 if (!DispatchContext)
250 return STATUS_INSUFFICIENT_RESOURCES;
251
252 // allocate object header
253 Status = KsAllocateObjectHeader(&ObjectHeader, CreateItemCount, CreateItem, Irp, &DispatchTable);
254
255 if (!NT_SUCCESS(Status))
256 {
257 // free dispatch context
258 FreeItem(DispatchContext, TAG_PORTCLASS);
259 // done
260 return Status;
261 }
262
263 // initialize dispatch context
264 DispatchContext->ObjectHeader = ObjectHeader;
265 DispatchContext->Target = Target;
266 DispatchContext->CreateItem = CreateItem;
267
268 // store dispatch context
269 IoStack->FileObject->FsContext = DispatchContext;
270
271 DPRINT("KsAllocateObjectHeader result %x Target %p Context %p\n", Status, Target, DispatchContext);
272 return Status;
273}
KsAllocateObjectHeader
KSDDKAPI NTSTATUS NTAPI KsAllocateObjectHeader(OUT KSOBJECT_HEADER *Header, IN ULONG ItemsCount, IN PKSOBJECT_CREATE_ITEM ItemsList OPTIONAL, IN PIRP Irp, IN KSDISPATCH_TABLE *Table)
Definition: api.c:610
NonPagedPool
#define NonPagedPool
Definition: env_spec_w32.h:307
CreateItem
static CABITEM * CreateItem(LPCWSTR Path, UINT Attrib, UINT Size, UINT DateTime)
Definition: folder.cpp:69
AllocateItem
PVOID AllocateItem(IN POOL_TYPE PoolType, IN SIZE_T NumberOfBytes)
Definition: misc.c:29
DPRINT
#define DPRINT
Definition: sndvol32.h:73
STATUS_INSUFFICIENT_RESOURCES
#define STATUS_INSUFFICIENT_RESOURCES
Definition: udferr_usr.h:158
DispatchTable
_In_ PWDFDEVICE_INIT _In_ PWDF_PDO_EVENT_CALLBACKS DispatchTable
Definition: wdfpdo.h:248
Target
_In_ WDFIOTARGET Target
Definition: wdfrequest.h:306

Referenced by PcCreateItemDispatch(), and PcCreatePinDispatch().

Variable Documentation

◆ DispatchTable

KSDISPATCH_TABLE DispatchTable
static
Initial value:
=
{
Dispatch_fnDeviceIoControl,
Dispatch_fnRead,
Dispatch_fnWrite,
Dispatch_fnFlush,
Dispatch_fnClose,
Dispatch_fnQuerySecurity,
Dispatch_fnSetSecurity,
Dispatch_fnFastDeviceIoControl,
Dispatch_fnFastRead,
Dispatch_fnFastWrite,
}
Dispatch_fnDeviceIoControl
NTSTATUS NTAPI Dispatch_fnDeviceIoControl(PDEVICE_OBJECT DeviceObject, PIRP Irp)
Definition: dispatcher.cpp:16
Dispatch_fnRead
NTSTATUS NTAPI Dispatch_fnRead(PDEVICE_OBJECT DeviceObject, PIRP Irp)
Definition: dispatcher.cpp:35
Dispatch_fnClose
NTSTATUS NTAPI Dispatch_fnClose(PDEVICE_OBJECT DeviceObject, PIRP Irp)
Definition: dispatcher.cpp:92
Dispatch_fnFlush
NTSTATUS NTAPI Dispatch_fnFlush(PDEVICE_OBJECT DeviceObject, PIRP Irp)
Definition: dispatcher.cpp:73
Dispatch_fnFastWrite
BOOLEAN NTAPI Dispatch_fnFastWrite(PFILE_OBJECT FileObject, PLARGE_INTEGER FileOffset, ULONG Length, BOOLEAN Wait, ULONG LockKey, PVOID Buffer, PIO_STATUS_BLOCK IoStatus, PDEVICE_OBJECT DeviceObject)
Definition: dispatcher.cpp:200
Dispatch_fnSetSecurity
NTSTATUS NTAPI Dispatch_fnSetSecurity(PDEVICE_OBJECT DeviceObject, PIRP Irp)
Definition: dispatcher.cpp:138
Dispatch_fnQuerySecurity
NTSTATUS NTAPI Dispatch_fnQuerySecurity(PDEVICE_OBJECT DeviceObject, PIRP Irp)
Definition: dispatcher.cpp:119
Dispatch_fnFastRead
BOOLEAN NTAPI Dispatch_fnFastRead(PFILE_OBJECT FileObject, PLARGE_INTEGER FileOffset, ULONG Length, BOOLEAN Wait, ULONG LockKey, PVOID Buffer, PIO_STATUS_BLOCK IoStatus, PDEVICE_OBJECT DeviceObject)
Definition: dispatcher.cpp:179
Dispatch_fnFastDeviceIoControl
BOOLEAN NTAPI Dispatch_fnFastDeviceIoControl(PFILE_OBJECT FileObject, BOOLEAN Wait, PVOID InputBuffer, ULONG InputBufferLength, PVOID OutputBuffer, ULONG OutputBufferLength, ULONG IoControlCode, PIO_STATUS_BLOCK IoStatus, PDEVICE_OBJECT DeviceObject)
Definition: dispatcher.cpp:157
Dispatch_fnWrite
NTSTATUS NTAPI Dispatch_fnWrite(PDEVICE_OBJECT DeviceObject, PIRP Irp)
Definition: dispatcher.cpp:54

Definition at line 218 of file dispatcher.cpp.