ReactOS 0.4.15-dev-6639-gebfec38
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 12 of file dispatcher.cpp.

Function Documentation

◆ Dispatch_fnClose()

NTSTATUS NTAPI Dispatch_fnClose ( PDEVICE_OBJECT  DeviceObject,
PIRP  Irp 
)

Definition at line 98 of file dispatcher.cpp.

101{
102 PIO_STACK_LOCATION IoStack;
103 PDISPATCH_CONTEXT DispatchContext;
104 NTSTATUS Status;
105
106 // get current irp stack
107 IoStack = IoGetCurrentIrpStackLocation(Irp);
108 // get dispatch context
109 DispatchContext = (PDISPATCH_CONTEXT)IoStack->FileObject->FsContext;
110
111 // let IrpTarget handle request
112 Status = DispatchContext->Target->Close(DeviceObject, Irp);
113
114 if (NT_SUCCESS(Status))
115 {
116 KsFreeObjectHeader(DispatchContext->ObjectHeader);
117 FreeItem(DispatchContext, TAG_PORTCLASS);
118 }
119 // done
120 return Status;
121}
NTSTATUS
LONG NTSTATUS
Definition: precomp.h:26
Irp
_In_ PIRP Irp
Definition: csq.h:116
NT_SUCCESS
#define NT_SUCCESS(StatCode)
Definition: apphelp.c:32
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:43
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: iotypes.h:3110
_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
IoGetCurrentIrpStackLocation
__drv_aliasesMem FORCEINLINE PIO_STACK_LOCATION IoGetCurrentIrpStackLocation(_In_ PIRP Irp)
Definition: iofuncs.h:2793

◆ Dispatch_fnDeviceIoControl()

NTSTATUS NTAPI Dispatch_fnDeviceIoControl ( PDEVICE_OBJECT  DeviceObject,
PIRP  Irp 
)

Definition at line 19 of file dispatcher.cpp.

22{
23 PIO_STACK_LOCATION IoStack;
24 PDISPATCH_CONTEXT DispatchContext;
25
26 // get current irp stack
27 IoStack = IoGetCurrentIrpStackLocation(Irp);
28
29 // get dispatch context
30 DispatchContext = (PDISPATCH_CONTEXT)IoStack->FileObject->FsContext;
31
32 // let IrpTarget handle request
33 return DispatchContext->Target->DeviceIoControl(DeviceObject, Irp);
34}

◆ 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 164 of file dispatcher.cpp.

174{
175 PDISPATCH_CONTEXT DispatchContext;
176
177 // get dispatch context
178 DispatchContext = (PDISPATCH_CONTEXT)FileObject->FsContext;
179
180 // let IrpTarget handle request
181 return DispatchContext->Target->FastDeviceIoControl(FileObject, Wait, InputBuffer, InputBufferLength, OutputBuffer, OutputBufferLength, IoControlCode, IoStatus, DeviceObject);
182}
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 187 of file dispatcher.cpp.

196{
197 PDISPATCH_CONTEXT DispatchContext;
198
199 // get dispatch context
200 DispatchContext = (PDISPATCH_CONTEXT)FileObject->FsContext;
201
202 // let IrpTarget handle request
203 return DispatchContext->Target->FastRead(FileObject, FileOffset, Length, Wait, LockKey, Buffer, IoStatus, DeviceObject);
204}
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:2665
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 208 of file dispatcher.cpp.

217{
218 PDISPATCH_CONTEXT DispatchContext;
219
220 // get dispatch context
221 DispatchContext = (PDISPATCH_CONTEXT)FileObject->FsContext;
222 // let IrpTarget handle request
223 return DispatchContext->Target->FastWrite(FileObject, FileOffset, Length, Wait, LockKey, Buffer, IoStatus, DeviceObject);
224}

◆ Dispatch_fnFlush()

NTSTATUS NTAPI Dispatch_fnFlush ( PDEVICE_OBJECT  DeviceObject,
PIRP  Irp 
)

Definition at line 78 of file dispatcher.cpp.

81{
82 PIO_STACK_LOCATION IoStack;
83 PDISPATCH_CONTEXT DispatchContext;
84
85 // get current irp stack
86 IoStack = IoGetCurrentIrpStackLocation(Irp);
87
88 // get dispatch context
89 DispatchContext = (PDISPATCH_CONTEXT)IoStack->FileObject->FsContext;
90
91
92 // let IrpTarget handle request
93 return DispatchContext->Target->Flush(DeviceObject, Irp);
94}

◆ Dispatch_fnQuerySecurity()

NTSTATUS NTAPI Dispatch_fnQuerySecurity ( PDEVICE_OBJECT  DeviceObject,
PIRP  Irp 
)

Definition at line 125 of file dispatcher.cpp.

128{
129 PIO_STACK_LOCATION IoStack;
130 PDISPATCH_CONTEXT DispatchContext;
131
132 // get current irp stack
133 IoStack = IoGetCurrentIrpStackLocation(Irp);
134
135 // get dispatch context
136 DispatchContext = (PDISPATCH_CONTEXT)IoStack->FileObject->FsContext;
137
138
139 // let IrpTarget handle request
140 return DispatchContext->Target->QuerySecurity(DeviceObject, Irp);
141}

◆ Dispatch_fnRead()

NTSTATUS NTAPI Dispatch_fnRead ( PDEVICE_OBJECT  DeviceObject,
PIRP  Irp 
)

Definition at line 38 of file dispatcher.cpp.

41{
42 PIO_STACK_LOCATION IoStack;
43 PDISPATCH_CONTEXT DispatchContext;
44
45 // get current irp stack
46 IoStack = IoGetCurrentIrpStackLocation(Irp);
47
48 // get dispatch context
49 DispatchContext = (PDISPATCH_CONTEXT)IoStack->FileObject->FsContext;
50
51
52 // let IrpTarget handle request
53 return DispatchContext->Target->Read(DeviceObject, Irp);
54}

◆ Dispatch_fnSetSecurity()

NTSTATUS NTAPI Dispatch_fnSetSecurity ( PDEVICE_OBJECT  DeviceObject,
PIRP  Irp 
)

Definition at line 145 of file dispatcher.cpp.

148{
149 PIO_STACK_LOCATION IoStack;
150 PDISPATCH_CONTEXT DispatchContext;
151
152 // get current irp stack
153 IoStack = IoGetCurrentIrpStackLocation(Irp);
154
155 // get dispatch context
156 DispatchContext = (PDISPATCH_CONTEXT)IoStack->FileObject->FsContext;
157
158 // let IrpTarget handle request
159 return DispatchContext->Target->SetSecurity(DeviceObject, Irp);
160}

◆ Dispatch_fnWrite()

NTSTATUS NTAPI Dispatch_fnWrite ( PDEVICE_OBJECT  DeviceObject,
PIRP  Irp 
)

Definition at line 58 of file dispatcher.cpp.

61{
62 PIO_STACK_LOCATION IoStack;
63 PDISPATCH_CONTEXT DispatchContext;
64
65 // get current irp stack
66 IoStack = IoGetCurrentIrpStackLocation(Irp);
67
68 // get dispatch context
69 DispatchContext = (PDISPATCH_CONTEXT)IoStack->FileObject->FsContext;
70
71
72 // let IrpTarget handle request
73 return DispatchContext->Target->Write(DeviceObject, Irp);
74}

◆ NewDispatchObject()

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

Definition at line 242 of file dispatcher.cpp.

247{
248 NTSTATUS Status;
249 KSOBJECT_HEADER ObjectHeader;
250 PIO_STACK_LOCATION IoStack;
251 PDISPATCH_CONTEXT DispatchContext;
252
253 // get current irp stack location
254 IoStack = IoGetCurrentIrpStackLocation(Irp);
255
256 DispatchContext = (PDISPATCH_CONTEXT)AllocateItem(NonPagedPool, sizeof(DISPATCH_CONTEXT), TAG_PORTCLASS);
257 if (!DispatchContext)
258 return STATUS_INSUFFICIENT_RESOURCES;
259
260 // allocate object header
261 Status = KsAllocateObjectHeader(&ObjectHeader, CreateItemCount, CreateItem, Irp, &DispatchTable);
262
263 if (!NT_SUCCESS(Status))
264 {
265 // free dispatch context
266 FreeItem(DispatchContext, TAG_PORTCLASS);
267 // done
268 return Status;
269 }
270
271 // initialize dispatch context
272 DispatchContext->ObjectHeader = ObjectHeader;
273 DispatchContext->Target = Target;
274 DispatchContext->CreateItem = CreateItem;
275
276 // store dispatch context
277 IoStack->FileObject->FsContext = DispatchContext;
278
279 DPRINT("KsAllocateObjectHeader result %x Target %p Context %p\n", Status, Target, DispatchContext);
280 return Status;
281}
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
AllocateItem
PVOID AllocateItem(IN POOL_TYPE PoolType, IN SIZE_T NumberOfBytes)
Definition: misc.c:30
DPRINT
#define DPRINT
Definition: sndvol32.h:71
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:19
Dispatch_fnRead
NTSTATUS NTAPI Dispatch_fnRead(PDEVICE_OBJECT DeviceObject, PIRP Irp)
Definition: dispatcher.cpp:38
Dispatch_fnClose
NTSTATUS NTAPI Dispatch_fnClose(PDEVICE_OBJECT DeviceObject, PIRP Irp)
Definition: dispatcher.cpp:98
Dispatch_fnFlush
NTSTATUS NTAPI Dispatch_fnFlush(PDEVICE_OBJECT DeviceObject, PIRP Irp)
Definition: dispatcher.cpp:78
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:208
Dispatch_fnSetSecurity
NTSTATUS NTAPI Dispatch_fnSetSecurity(PDEVICE_OBJECT DeviceObject, PIRP Irp)
Definition: dispatcher.cpp:145
Dispatch_fnQuerySecurity
NTSTATUS NTAPI Dispatch_fnQuerySecurity(PDEVICE_OBJECT DeviceObject, PIRP Irp)
Definition: dispatcher.cpp:125
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:187
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:164
Dispatch_fnWrite
NTSTATUS NTAPI Dispatch_fnWrite(PDEVICE_OBJECT DeviceObject, PIRP Irp)
Definition: dispatcher.cpp:58

Definition at line 226 of file dispatcher.cpp.