Sample Code
Windows Driver Samples/ Windows Filtering Platform Sample/ C++/ sys/ NotifyFunctions_FastCallouts.cpp/
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 | //////////////////////////////////////////////////////////////////////////////////////////////////////// Copyright (c) 2012 Microsoft Corporation. All Rights Reserved.//// Module Name:// NotifyFunctions_FastCallouts.cpp//// Abstract:// This module contains WFP Notify functions for the performance callouts.//// Naming Convention://// <Module><Scenario>// // i.e.//// NotifyBasicNotification//// <Module>// Notify - Function is an FWPS_CALLOUT_NOTIFY_FN// <Scenario>// FastNotification - Function demonstates use of the performance notifications//// Author:// Dusty Harper (DHarper)//// Revision History://// [ Month ][Day] [Year] - [Revision]-[ Comments ]// May 01, 2010 - 1.0 - Creation//////////////////////////////////////////////////////////////////////////////////////////////////////#include "Framework_WFPSamplerCalloutDriver.h" /// .#include "NotifyFunctions_FastCallouts.tmh" /// $(OBJ_PATH)\$(O)\/** @private_function="PrvFastNotificationWorkItemRoutine" Purpose: Traces the appropriate notification event. <br> <br> Notes: <br> <br> MSDN_Ref: <br>*/_IRQL_requires_(PASSIVE_LEVEL)_IRQL_requires_same__Function_class_(IO_WORKITEM_ROUTINE)VOID PrvFastNotificationWorkItemRoutine(_In_ PDEVICE_OBJECT pDeviceObject, _Inout_opt_ PVOID pContext){#if DBG DbgPrintEx(DPFLTR_IHVNETWORK_ID, DPFLTR_INFO_LEVEL, " ---> PrvFastNotificationWorkItemRoutine()\n");#endif /// DBG UNREFERENCED_PARAMETER(pDeviceObject); NT_ASSERT(pContext); NT_ASSERT(((WORKITEM_DATA*)pContext)->pNotifyData); WORKITEM_DATA* pWorkItemData = (WORKITEM_DATA*)pContext; if(pWorkItemData) { NTSTATUS status = STATUS_SUCCESS; FWPM_CALLOUT* pCallout = 0; PWSTR pCalloutName = L""; status = FwpmCalloutGetById(g_EngineHandle, pWorkItemData->pNotifyData->calloutID, &pCallout); if(status != STATUS_SUCCESS) DbgPrintEx(DPFLTR_IHVNETWORK_ID, DPFLTR_ERROR_LEVEL, " !!!! PrvFastNotificationWorkItemRoutine : FwpmCalloutGetById() [status: %#x]\n", status); else pCalloutName = pCallout->displayData.name; switch(pWorkItemData->pNotifyData->notificationType) { case FWPS_CALLOUT_NOTIFY_ADD_FILTER: { DbgPrintEx(DPFLTR_IHVNETWORK_ID, DPFLTR_INFO_LEVEL, " -- A filter referencing %S callout was added\n", pCalloutName); break; } case FWPS_CALLOUT_NOTIFY_DELETE_FILTER: { DbgPrintEx(DPFLTR_IHVNETWORK_ID, DPFLTR_INFO_LEVEL, " -- A filter referencing %S callout was deleted\n", pCalloutName); break; } case FWPS_CALLOUT_NOTIFY_ADD_FILTER_POST_COMMIT: { DbgPrintEx(DPFLTR_IHVNETWORK_ID, DPFLTR_INFO_LEVEL, " -- A filter referencing %S callout was committed\n", pCalloutName); break; } default: { DbgPrintEx(DPFLTR_IHVNETWORK_ID, DPFLTR_INFO_LEVEL, " -- Invalid Notification Type. Please Contact WFP@Microsoft.com\n"); break; } } FwpmFreeMemory((VOID**)&pCallout); HLPR_DELETE(pWorkItemData->pNotifyData, WFPSAMPLER_CALLOUT_DRIVER_TAG); KrnlHlprWorkItemDataDestroy(&pWorkItemData); }#if DBG DbgPrintEx(DPFLTR_IHVNETWORK_ID, DPFLTR_INFO_LEVEL, " <--- PrvFastNotificationWorkItemRoutine()\n");#endif /// DBG return;}/** @notify_function="NotifyFastNotification" Purpose: Traces the notification event. <br> <br> Notes: <br> <br> MSDN_Ref: HTTP://MSDN.Microsoft.com/En-US/Library/FF568803.aspx <br>*/_IRQL_requires_min_(PASSIVE_LEVEL)_IRQL_requires_max_(DISPATCH_LEVEL)_IRQL_requires_same__Success_(return == STATUS_SUCCESS)NTSTATUS NotifyFastNotification(_In_ FWPS_CALLOUT_NOTIFY_TYPE notificationType, _In_ const GUID* pFilterKey, _Inout_ FWPS_FILTER* pFilter){#if DBG DbgPrintEx(DPFLTR_IHVNETWORK_ID, DPFLTR_INFO_LEVEL, " ---> NotifyFastNotification()\n");#endif /// DBG NT_ASSERT(pFilter); NTSTATUS status = STATUS_SUCCESS; NOTIFY_DATA* pNotifyData = 0;#pragma warning(push)#pragma warning(disable: 6014) /// pNotifyData is expected to be cleaned up by caller using PrvBasicNotificationWorkItemRoutine HLPR_NEW(pNotifyData, NOTIFY_DATA, WFPSAMPLER_CALLOUT_DRIVER_TAG); HLPR_BAIL_ON_ALLOC_FAILURE(pNotifyData, status);#pragma warning(pop) pNotifyData->notificationType = notificationType; pNotifyData->calloutID = pFilter->action.calloutId; pNotifyData->pFilterKey = pFilterKey; status = KrnlHlprWorkItemQueue(g_pWDMDevice, PrvFastNotificationWorkItemRoutine, pNotifyData); HLPR_BAIL_LABEL: if(status != STATUS_SUCCESS) { HLPR_DELETE(pNotifyData, WFPSAMPLER_CALLOUT_DRIVER_TAG); }#if DBG DbgPrintEx(DPFLTR_IHVNETWORK_ID, DPFLTR_INFO_LEVEL, " <--- NotifyFastNotification() [status: %#x]\n", status);#endif /// DBG return status;} |
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