ReactOS  0.4.15-dev-5606-gf34e425
io_x.h File Reference
This graph shows which files directly or indirectly include this file:

Go to the source code of this file.

Functions

static __inline NTSTATUS IopLockFileObject (_In_ PFILE_OBJECT FileObject, _In_ KPROCESSOR_MODE WaitMode)
 
static __inline VOID IopUnlockFileObject (IN PFILE_OBJECT FileObject)
 
FORCEINLINE VOID IopQueueIrpToThread (IN PIRP Irp)
 
FORCEINLINE VOID IopUnQueueIrpFromThread (IN PIRP Irp)
 
static __inline VOID IopUpdateOperationCount (IN IOP_TRANSFER_TYPE Type)
 
static __inline VOID IopUpdateTransferCount (IN IOP_TRANSFER_TYPE Type, IN ULONG TransferCount)
 
static __inline BOOLEAN IopValidateOpenPacket (IN POPEN_PACKET OpenPacket)
 

Function Documentation

◆ IopLockFileObject()

static __inline NTSTATUS IopLockFileObject ( _In_ PFILE_OBJECT  FileObject,
_In_ KPROCESSOR_MODE  WaitMode 
)
static

Definition at line 12 of file io_x.h.

15 {
16  BOOLEAN LockFailed;
17 
18  /* Lock the FO and check for contention */
20  {
22  return STATUS_SUCCESS;
23  }
24  else
25  {
27  WaitMode,
29  &LockFailed);
30  }
31 }
#define TRUE
Definition: types.h:120
#define BooleanFlagOn(F, SF)
Definition: ext2fs.h:183
#define FALSE
Definition: types.h:117
unsigned char BOOLEAN
_In_ WDFREQUEST _In_ WDFFILEOBJECT FileObject
Definition: wdfdevice.h:547
#define InterlockedExchange
Definition: armddk.h:54
#define FO_ALERTABLE_IO
Definition: iotypes.h:1777
#define ObReferenceObject
Definition: obfuncs.h:204
NTSTATUS NTAPI IopAcquireFileObjectLock(_In_ PFILE_OBJECT FileObject, _In_ KPROCESSOR_MODE AccessMode, _In_ BOOLEAN Alertable, _Out_ PBOOLEAN LockFailed)
Definition: file.c:2450
#define STATUS_SUCCESS
Definition: shellext.h:65
signed int * PLONG
Definition: retypes.h:5

Referenced by IopCloseFile(), IopDeviceFsIoControl(), IopGetSetSecurityObject(), IopQueryDeviceInformation(), IoSetInformation(), NtFlushBuffersFile(), NtLockFile(), NtNotifyChangeDirectoryFile(), NtQueryDirectoryFile(), NtQueryInformationFile(), NtQueryVolumeInformationFile(), NtReadFile(), NtSetInformationFile(), NtSetVolumeInformationFile(), NtUnlockFile(), and NtWriteFile().

◆ IopQueueIrpToThread()

FORCEINLINE VOID IopQueueIrpToThread ( IN PIRP  Irp)

Definition at line 49 of file io_x.h.

50 {
51  PETHREAD Thread = Irp->Tail.Overlay.Thread;
52 
53  /* Disable special kernel APCs so we can't race with IopCompleteRequest.
54  * IRP's thread must be the current thread */
56 
57  /* Insert it into the list */
58  InsertHeadList(&Thread->IrpList, &Irp->ThreadListEntry);
59 
60  /* Leave the guarded region */
62 }
FORCEINLINE VOID InsertHeadList(_Inout_ PLIST_ENTRY ListHead, _Inout_ __drv_aliasesMem PLIST_ENTRY Entry)
Definition: rtlfuncs.h:201
KTHREAD Tcb
Definition: pstypes.h:1103
_In_ PIRP Irp
Definition: csq.h:116
_In_opt_ PFILE_OBJECT _In_opt_ PETHREAD Thread
Definition: fltkernel.h:2652
#define KeEnterGuardedRegionThread(_Thread)
Definition: ke_x.h:27
#define KeLeaveGuardedRegionThread(_Thread)
Definition: ke_x.h:48
LIST_ENTRY IrpList
Definition: pstypes.h:1144

Referenced by IoCancelFileOpen(), IopCloseFile(), IopDeleteFile(), IopGetFileInformation(), IopGetSetSecurityObject(), IopParseDevice(), IopPerformSynchronousRequest(), IopQueryDeviceInformation(), IoQueueThreadIrp(), IoSetInformation(), NtQueryInformationFile(), and NtSetInformationFile().

◆ IopUnlockFileObject()

static __inline VOID IopUnlockFileObject ( IN PFILE_OBJECT  FileObject)
static

Definition at line 36 of file io_x.h.

37 {
38  /* Unlock the FO and wake any waiters up */
40  if (FileObject->Waiters)
41  {
43  }
45 }
#define TRUE
Definition: types.h:120
#define NT_VERIFY(exp)
Definition: rtlfuncs.h:3287
LONG NTAPI KeSetEvent(IN PKEVENT Event, IN KPRIORITY Increment, IN BOOLEAN Wait)
Definition: eventobj.c:159
#define FALSE
Definition: types.h:117
_In_ WDFREQUEST _In_ WDFFILEOBJECT FileObject
Definition: wdfdevice.h:547
#define ObDereferenceObject
Definition: obfuncs.h:203
#define InterlockedExchange
Definition: armddk.h:54
#define IO_NO_INCREMENT
Definition: iotypes.h:598
signed int * PLONG
Definition: retypes.h:5

Referenced by IopCleanupAfterException(), IopCleanupFailedIrp(), IopCloseFile(), IopDeviceFsIoControl(), IopGetSetSecurityObject(), IopPerformSynchronousRequest(), IopQueryDeviceInformation(), IoSetInformation(), NtQueryInformationFile(), NtQueryVolumeInformationFile(), NtReadFile(), NtSetInformationFile(), and NtWriteFile().

◆ IopUnQueueIrpFromThread()

FORCEINLINE VOID IopUnQueueIrpFromThread ( IN PIRP  Irp)

Definition at line 66 of file io_x.h.

67 {
68  /* Special kernel APCs must be disabled so we can't race with
69  * IopCompleteRequest (or because we are called from there) */
71 
72  /* Remove it from the list and reset it */
73  if (IsListEmpty(&Irp->ThreadListEntry))
74  return;
75  RemoveEntryList(&Irp->ThreadListEntry);
76  InitializeListHead(&Irp->ThreadListEntry);
77 }
BOOLEAN NTAPI KeAreAllApcsDisabled(VOID)
Definition: apc.c:985
_Must_inspect_result_ FORCEINLINE BOOLEAN IsListEmpty(_In_ const LIST_ENTRY *ListHead)
Definition: rtlfuncs.h:57
FORCEINLINE BOOLEAN RemoveEntryList(_In_ PLIST_ENTRY Entry)
Definition: rtlfuncs.h:105
_In_ PIRP Irp
Definition: csq.h:116
#define ASSERT(a)
Definition: mode.c:44
#define InitializeListHead(ListHead)
Definition: env_spec_w32.h:944

Referenced by IoCancelFileOpen(), IopCloseFile(), IopCompleteRequest(), IopDeleteFile(), and IopParseDevice().

◆ IopUpdateOperationCount()

static __inline VOID IopUpdateOperationCount ( IN IOP_TRANSFER_TYPE  Type)
static

Definition at line 82 of file io_x.h.

83 {
84  PLARGE_INTEGER CountToChange;
85 
86  /* Make sure I/O operations are being counted */
88  {
89  if (Type == IopReadTransfer)
90  {
91  /* Increase read count */
93  CountToChange = &PsGetCurrentProcess()->ReadOperationCount;
94  }
95  else if (Type == IopWriteTransfer)
96  {
97  /* Increase write count */
99  CountToChange = &PsGetCurrentProcess()->WriteOperationCount;
100  }
101  else
102  {
103  /* Increase other count */
105  CountToChange = &PsGetCurrentProcess()->OtherOperationCount;
106  }
107 
108  /* Increase the process-wide count */
109  ExInterlockedAddLargeStatistic(CountToChange, 1);
110  }
111 }
#define ExInterlockedAddLargeStatistic(Addend, Increment)
Definition: exfuncs.h:850
ULONG IoWriteOperationCount
Definition: iomgr.c:41
ULONG IoReadOperationCount
Definition: iomgr.c:39
#define PsGetCurrentProcess
Definition: psfuncs.h:17
Type
Definition: Type.h:6
BOOLEAN IoCountOperations
Definition: iomgr.c:38
ULONG IoOtherOperationCount
Definition: iomgr.c:43

Referenced by IopCloseFile(), IopCreateFile(), IopGetSetSecurityObject(), IopPerformSynchronousRequest(), IopQueryAttributesFile(), NtCancelIoFile(), NtDeleteFile(), NtQueryInformationFile(), NtReadFile(), NtSetInformationFile(), and NtWriteFile().

◆ IopUpdateTransferCount()

static __inline VOID IopUpdateTransferCount ( IN IOP_TRANSFER_TYPE  Type,
IN ULONG  TransferCount 
)
static

Definition at line 116 of file io_x.h.

117 {
118  PLARGE_INTEGER CountToChange;
119  PLARGE_INTEGER TransferToChange;
120 
121  /* Make sure I/O operations are being counted */
122  if (IoCountOperations)
123  {
124  if (Type == IopReadTransfer)
125  {
126  /* Increase read count */
127  CountToChange = &PsGetCurrentProcess()->ReadTransferCount;
128  TransferToChange = &IoReadTransferCount;
129  }
130  else if (Type == IopWriteTransfer)
131  {
132  /* Increase write count */
133  CountToChange = &PsGetCurrentProcess()->WriteTransferCount;
134  TransferToChange = &IoWriteTransferCount;
135  }
136  else
137  {
138  /* Increase other count */
139  CountToChange = &PsGetCurrentProcess()->OtherTransferCount;
140  TransferToChange = &IoOtherTransferCount;
141  }
142 
143  /* Increase the process-wide count */
144  ExInterlockedAddLargeStatistic(CountToChange, TransferCount);
145 
146  /* Increase global count */
147  ExInterlockedAddLargeStatistic(TransferToChange, TransferCount);
148  }
149 }
LARGE_INTEGER IoWriteTransferCount
Definition: iomgr.c:42
LARGE_INTEGER IoReadTransferCount
Definition: iomgr.c:40
#define ExInterlockedAddLargeStatistic(Addend, Increment)
Definition: exfuncs.h:850
#define PsGetCurrentProcess
Definition: psfuncs.h:17
Type
Definition: Type.h:6
LARGE_INTEGER IoOtherTransferCount
Definition: iomgr.c:44
BOOLEAN IoCountOperations
Definition: iomgr.c:38

Referenced by IopCompleteRequest(), NtReadFile(), NtSetInformationFile(), and NtWriteFile().

◆ IopValidateOpenPacket()

static __inline BOOLEAN IopValidateOpenPacket ( IN POPEN_PACKET  OpenPacket)
static

Definition at line 154 of file io_x.h.

155 {
156  /* Validate the packet */
157  if (!(OpenPacket) ||
158  (OpenPacket->Type != IO_TYPE_OPEN_PACKET) ||
159  (OpenPacket->Size != sizeof(OPEN_PACKET)))
160  {
161  /* Fail */
162  return FALSE;
163  }
164 
165  /* Good packet */
166  return TRUE;
167 }
#define TRUE
Definition: types.h:120
#define IO_TYPE_OPEN_PACKET
#define FALSE
Definition: types.h:117

Referenced by IopParseDevice(), and IopParseFile().