ReactOS 0.4.15-dev-8138-g1e75ea8
fxdevice.cpp File Reference
#include "coreprivshared.hpp"
Include dependency graph for fxdevice.cpp:

Go to the source code of this file.

Functions

_Must_inspect_result_ __inline BOOLEAN IsPreprocessIrp (__in MdIrp Irp, __in FxIrpPreprocessInfo *Info)
 
_Must_inspect_result_ __inline NTSTATUS PreprocessIrp (__in FxDevice *Device, __in MdIrp Irp, __in FxIrpPreprocessInfo *Info, __in PVOID DispatchContext)
 
_Must_inspect_result_ __inline NTSTATUS DispatchWorker (__in FxDevice *Device, __in MdIrp Irp, __in WDFCONTEXT DispatchContext)
 

Function Documentation

◆ DispatchWorker()

_Must_inspect_result_ __inline NTSTATUS DispatchWorker ( __in FxDevice Device,
__in MdIrp  Irp,
__in WDFCONTEXT  DispatchContext 
)

Definition at line 1507 of file fxdevice.cpp.

1512{
1514 FxIrp irp(Irp);
1515
1517
1520
1521 //
1522 // Check for any driver/class-extensions' preprocess requirements.
1523 //
1524 while (next != &Device->m_PreprocessInfoListHead) {
1526
1528
1529 //
1530 // Advance to next node.
1531 //
1532 next = next->Flink;
1533
1534 if (IsPreprocessIrp(Irp, info)) {
1535 return PreprocessIrp(Device, Irp, info, next);
1536 }
1537 }
1538
1539 //
1540 // No preprocess requirements, directly dispatch the IRP.
1541 //
1542 return Device->GetDispatchPackage(
1544 )->Dispatch(Irp);
1545}
Definition: fxirp.hpp:28
UCHAR GetMajorFunction(VOID)
Definition: fxirpum.cpp:217
_In_ PIRP Irp
Definition: csq.h:116
#define NULL
Definition: types.h:112
_Must_inspect_result_ __inline BOOLEAN IsPreprocessIrp(__in MdIrp Irp, __in FxIrpPreprocessInfo *Info)
Definition: fxdevice.cpp:1408
_Must_inspect_result_ __inline NTSTATUS PreprocessIrp(__in FxDevice *Device, __in MdIrp Irp, __in FxIrpPreprocessInfo *Info, __in PVOID DispatchContext)
Definition: fxdevice.cpp:1451
#define FX_IN_DISPATCH_CALLBACK
Definition: fxpkgio.hpp:39
FxIrp * irp
#define ASSERT(a)
Definition: mode.c:44
static unsigned __int64 next
Definition: rand_nt.c:6
Definition: typedefs.h:120
struct _LIST_ENTRY * PLIST_ENTRY
uint32_t ULONG_PTR
Definition: typedefs.h:65
#define CONTAINING_RECORD(address, type, field)
Definition: typedefs.h:260
_Must_inspect_result_ _In_ WDFDEVICE Device
Definition: wdfchildlist.h:474
_In_ UCHAR _In_ UCHAR _In_ ULONG _In_ WDFCONTEXT _Inout_ PIRP _In_ WDFCONTEXT DispatchContext
Definition: wdfdevice.h:1708
unsigned char UCHAR
Definition: xmlstorage.h:181

Referenced by FxDevice::Dispatch(), and FxDevice::DispatchPreprocessedIrp().

◆ IsPreprocessIrp()

_Must_inspect_result_ __inline BOOLEAN IsPreprocessIrp ( __in MdIrp  Irp,
__in FxIrpPreprocessInfo Info 
)

Definition at line 1408 of file fxdevice.cpp.

1412{
1413 UCHAR major, minor;
1414 BOOLEAN preprocess;
1415 FxIrp irp(Irp);
1416
1419
1420 preprocess = FALSE;
1421
1422 if (Info->Dispatch[major].EvtDevicePreprocess != NULL) {
1423 if (Info->Dispatch[major].NumMinorFunctions == 0) {
1424 //
1425 // If the driver is not interested in particular minor codes,
1426 // just give the irp to it.
1427 //
1428 preprocess = TRUE;
1429 }
1430 else {
1431 ULONG i;
1432
1433 //
1434 // Try to match up to a minor code.
1435 //
1436 for (i = 0; i < Info->Dispatch[major].NumMinorFunctions; i++) {
1437 if (Info->Dispatch[major].MinorFunctions[i] == minor) {
1438 preprocess = TRUE;
1439 break;
1440 }
1441 }
1442 }
1443 }
1444
1445 return preprocess;
1446}
unsigned char BOOLEAN
UCHAR GetMinorFunction(VOID)
Definition: fxirpum.cpp:297
#define TRUE
Definition: types.h:120
#define FALSE
Definition: types.h:117
GLsizei GLenum const GLvoid GLsizei GLenum GLbyte GLbyte GLbyte GLdouble GLdouble GLdouble GLfloat GLfloat GLfloat GLint GLint GLint GLshort GLshort GLshort GLubyte GLubyte GLubyte GLuint GLuint GLuint GLushort GLushort GLushort GLbyte GLbyte GLbyte GLbyte GLdouble GLdouble GLdouble GLdouble GLfloat GLfloat GLfloat GLfloat GLint GLint GLint GLint GLshort GLshort GLshort GLshort GLubyte GLubyte GLubyte GLubyte GLuint GLuint GLuint GLuint GLushort GLushort GLushort GLushort GLboolean const GLdouble const GLfloat const GLint const GLshort const GLbyte const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLdouble const GLfloat const GLfloat const GLint const GLint const GLshort const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort GLenum GLenum GLenum GLfloat GLenum GLint GLenum GLenum GLenum GLfloat GLenum GLenum GLint GLenum GLfloat GLenum GLint GLint GLushort GLenum GLenum GLfloat GLenum GLenum GLint GLfloat const GLubyte GLenum GLenum GLenum const GLfloat GLenum GLenum const GLint GLenum GLint GLint GLsizei GLsizei GLint GLenum GLenum const GLvoid GLenum GLenum const GLfloat GLenum GLenum const GLint GLenum GLenum const GLdouble GLenum GLenum const GLfloat GLenum GLenum const GLint GLsizei GLuint GLfloat GLuint GLbitfield GLfloat GLint GLuint GLboolean GLenum GLfloat GLenum GLbitfield GLenum GLfloat GLfloat GLint GLint const GLfloat GLenum GLfloat GLfloat GLint GLint GLfloat GLfloat GLint GLint const GLfloat GLint GLfloat GLfloat GLint GLfloat GLfloat GLint GLfloat GLfloat const GLdouble const GLfloat const GLdouble const GLfloat GLint i
Definition: glfuncs.h:248
#define minor(rdev)
Definition: propsheet.cpp:929
#define major(rdev)
Definition: propsheet.cpp:928
uint32_t ULONG
Definition: typedefs.h:59
_Must_inspect_result_ _In_ WDFCHILDLIST _In_ PWDF_CHILD_LIST_ITERATOR _Out_ WDFDEVICE _Inout_opt_ PWDF_CHILD_RETRIEVE_INFO Info
Definition: wdfchildlist.h:690

Referenced by DispatchWorker().

◆ PreprocessIrp()

_Must_inspect_result_ __inline NTSTATUS PreprocessIrp ( __in FxDevice Device,
__in MdIrp  Irp,
__in FxIrpPreprocessInfo Info,
__in PVOID  DispatchContext 
)

Definition at line 1451 of file fxdevice.cpp.

1457{
1459 UCHAR major, minor;
1460 FxIrp irp(Irp);
1461
1464
1465 //
1466 // If this is a pnp remove irp, this object could be deleted by the time
1467 // EvtDevicePreprocess returns. To not touch freed pool, capture all
1468 // values we will need before preprocessing.
1469 //
1470
1471 if (Info->ClassExtension == FALSE) {
1472 status = Info->Dispatch[major].EvtDevicePreprocess( Device->GetHandle(),
1473 Irp);
1474 }
1475 else {
1476 status = Info->Dispatch[major].EvtCxDevicePreprocess(
1477 Device->GetHandle(),
1478 Irp,
1480 }
1481
1482 //
1483 // If we got this far, we handed the irp off to EvtDevicePreprocess, so we
1484 // must now do our remlock maintainance if necessary.
1485 //
1487 //
1488 // Keep the remove lock active until after we call into the driver.
1489 // If the driver redispatches the irp to the framework, we will
1490 // reacquire the remove lock at that point in time.
1491 //
1492 // Touching pDevObj after sending the pnp remove irp to the framework
1493 // is OK b/c we have acquired the remlock previously and that will
1494 // prevent this irp's processing racing with the pnp remove irp
1495 // processing.
1496 //
1497 Mx::MxReleaseRemoveLock(Device->GetRemoveLock(),
1498 Irp);
1499 }
1500
1501 return status;
1502}
LONG NTSTATUS
Definition: precomp.h:26
static FxDeviceRemLockAction __inline _RequiresRemLock(__in UCHAR MajorCode, __in UCHAR MinorCode)
Definition: fxdevice.hpp:933
static __inline VOID MxReleaseRemoveLock(__in MdRemoveLock RemoveLock, __in PVOID Tag)
Definition: mxgeneralkm.h:278
@ FxDeviceRemLockRequired
Definition: fxdevice.hpp:80
Definition: ps.c:97

Referenced by DispatchWorker().