ReactOS 0.4.15-dev-7705-g2320c37
context.c
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1/*
2 * COPYRIGHT: See COPYING in the top level directory
3 * PROJECT: ReactOS kernel
4 * FILE: drivers/net/afd/afd/context.c
5 * PURPOSE: Ancillary functions driver
6 * PROGRAMMER: Art Yerkes (ayerkes@speakeasy.net)
7 * UPDATE HISTORY:
8 * 20040708 Created
9 */
10
11#include "afd.h"
12
18 PAFD_FCB FCB = FileObject->FsContext;
19 UINT ContextSize = IrpSp->Parameters.DeviceIoControl.OutputBufferLength;
20
22
23 if( !SocketAcquireStateLock( FCB ) ) return LostSocket( Irp );
24
25 if( FCB->ContextSize < ContextSize ) ContextSize = FCB->ContextSize;
26
27 if( FCB->Context ) {
28 RtlCopyMemory( Irp->UserBuffer,
29 FCB->Context,
32 }
33
34 AFD_DbgPrint(MID_TRACE,("Returning %x\n", Status));
35
37}
38
42{
44 PAFD_FCB FCB = FileObject->FsContext;
45
47
48 if( !SocketAcquireStateLock( FCB ) ) return LostSocket( Irp );
49
50 if (IrpSp->Parameters.DeviceIoControl.OutputBufferLength < sizeof(ULONG))
51 {
52 AFD_DbgPrint(MIN_TRACE,("Buffer too small\n"));
54 }
55
56 RtlCopyMemory(Irp->UserBuffer,
57 &FCB->ContextSize,
58 sizeof(ULONG));
59
61}
62
67 PAFD_FCB FCB = FileObject->FsContext;
69
71
72 if( !SocketAcquireStateLock( FCB ) ) return LostSocket( Irp );
73
74 if (!Context)
76
77 if( FCB->Context ) {
79 FCB->ContextSize = 0;
80 }
81
83 IrpSp->Parameters.DeviceIoControl.InputBufferLength,
85
86 if( !FCB->Context ) return UnlockAndMaybeComplete( FCB, STATUS_NO_MEMORY, Irp, 0 );
87
88 FCB->ContextSize = IrpSp->Parameters.DeviceIoControl.InputBufferLength;
89
90 RtlCopyMemory( FCB->Context,
91 Context,
92 FCB->ContextSize );
93
95}
#define TAG_AFD_SOCKET_CONTEXT
Definition: afd.h:40
LONG NTSTATUS
Definition: precomp.h:26
#define MIN_TRACE
Definition: debug.h:14
#define MID_TRACE
Definition: debug.h:15
_In_ PIRP Irp
Definition: csq.h:116
#define NULL
Definition: types.h:112
#define FALSE
Definition: types.h:117
_In_ PIO_STACK_LOCATION IrpSp
Definition: create.c:4137
NTSTATUS NTAPI AfdSetContext(PDEVICE_OBJECT DeviceObject, PIRP Irp, PIO_STACK_LOCATION IrpSp)
Definition: context.c:64
NTSTATUS NTAPI AfdGetContextSize(PDEVICE_OBJECT DeviceObject, PIRP Irp, PIO_STACK_LOCATION IrpSp)
Definition: context.c:40
NTSTATUS NTAPI AfdGetContext(PDEVICE_OBJECT DeviceObject, PIRP Irp, PIO_STACK_LOCATION IrpSp)
Definition: context.c:14
PVOID LockRequest(PIRP Irp, PIO_STACK_LOCATION IrpSp, BOOLEAN Output, KPROCESSOR_MODE *LockMode)
Definition: lock.c:24
NTSTATUS LostSocket(PIRP Irp)
Definition: lock.c:387
NTSTATUS NTAPI UnlockAndMaybeComplete(PAFD_FCB FCB, NTSTATUS Status, PIRP Irp, UINT Information)
Definition: lock.c:375
BOOLEAN SocketAcquireStateLock(PAFD_FCB FCB)
Definition: lock.c:360
#define AFD_DbgPrint(_t_, _x_)
Definition: debug.h:60
#define ExAllocatePoolWithTag(hernya, size, tag)
Definition: env_spec_w32.h:350
#define PagedPool
Definition: env_spec_w32.h:308
_Must_inspect_result_ _In_ FLT_CONTEXT_TYPE _In_ SIZE_T ContextSize
Definition: fltkernel.h:1444
Status
Definition: gdiplustypes.h:25
#define ExFreePoolWithTag(_P, _T)
Definition: module.h:1109
unsigned int UINT
Definition: ndis.h:50
#define UNREFERENCED_PARAMETER(P)
Definition: ntbasedef.h:317
#define STATUS_NO_MEMORY
Definition: ntstatus.h:260
#define STATUS_SUCCESS
Definition: shellext.h:65
#define STATUS_BUFFER_TOO_SMALL
Definition: shellext.h:69
Definition: afd.h:159
Definition: cdstruc.h:902
PFILE_OBJECT FileObject
Definition: iotypes.h:3169
struct _NAMED_PIPE_CREATE_PARAMETERS * Parameters
Definition: iotypes.h:3128
#define NTAPI
Definition: typedefs.h:36
#define RtlCopyMemory(Destination, Source, Length)
Definition: typedefs.h:263
uint32_t ULONG
Definition: typedefs.h:59
#define STATUS_INVALID_PARAMETER
Definition: udferr_usr.h:135
_In_ PDEVICE_OBJECT DeviceObject
Definition: wdfdevice.h:2055
_In_ WDFREQUEST _In_ WDFFILEOBJECT FileObject
Definition: wdfdevice.h:550
* PFILE_OBJECT
Definition: iotypes.h:1998