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3 * Copyright (c) 2009, 2010, 2011 Your File System, Inc.
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36 // File: AFSCreate.cpp
39 #include "AFSCommon.h"
42 // Function: AFSCreate
46 // This function is the dispatch handler for the IRP_MJ_CREATE requests. It makes the determination to
47 // which interface this request is destined.
51 // A status is returned for the function. The Irp completion processing is handled in the specific
56 AFSCreate( IN PDEVICE_OBJECT DeviceObject,
60 NTSTATUS ntStatus = STATUS_SUCCESS;
65 if( DeviceObject == AFSDeviceObject)
68 ntStatus = AFSControlDeviceCreate( Irp);
70 try_return( ntStatus);
73 ntStatus = AFSCommonCreate( DeviceObject,
80 __except( AFSExceptionFilter( __FUNCTION__, GetExceptionCode(), GetExceptionInformation()) )
85 "EXCEPTION - AFSCreate\n");
87 ntStatus = STATUS_ACCESS_DENIED;
89 AFSDumpTraceFilesFnc();
96 AFSCommonCreate( IN PDEVICE_OBJECT DeviceObject,
100 NTSTATUS ntStatus = STATUS_SUCCESS;
101 FILE_OBJECT *pFileObject = NULL;
102 IO_STACK_LOCATION *pIrpSp;
103 AFSDeviceExt *pDeviceExt = NULL;
104 AFSDeviceExt *pControlDevExt = (AFSDeviceExt *)AFSDeviceObject->DeviceExtension;
105 GUID *pAuthGroup = NULL;
106 UNICODE_STRING uniGUIDString;
111 pIrpSp = IoGetCurrentIrpStackLocation( Irp);
112 pDeviceExt = (AFSDeviceExt *)DeviceObject->DeviceExtension;
113 pFileObject = pIrpSp->FileObject;
115 uniGUIDString.Buffer = NULL;
116 uniGUIDString.Length = 0;
117 uniGUIDString.MaximumLength = 0;
120 // Validate the process entry
123 pAuthGroup = AFSValidateProcessEntry( PsGetCurrentProcessId());
125 if( pAuthGroup != NULL)
128 RtlStringFromGUID( *pAuthGroup,
131 AFSDbgLogMsg( AFS_SUBSYSTEM_AUTHGROUP_PROCESSING,
132 AFS_TRACE_LEVEL_VERBOSE,
133 "%s (%08lX) Located AuthGroup %wZ after validation\n",
141 AFSDbgLogMsg( AFS_SUBSYSTEM_AUTHGROUP_PROCESSING,
142 AFS_TRACE_LEVEL_VERBOSE,
143 "%s (%08lX) Failed to locate AuthGroup\n",
152 if( pFileObject == NULL ||
153 pFileObject->FileName.Buffer == NULL)
156 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
157 AFS_TRACE_LEVEL_VERBOSE,
158 "AFSCommonCreate (%08lX) Processing volume open request\n",
161 ntStatus = AFSOpenRedirector( Irp);
163 AFSCompleteRequest( Irp,
166 try_return( ntStatus);
171 // Check the state of the library
174 ntStatus = AFSCheckLibraryState( Irp);
176 if( !NT_SUCCESS( ntStatus) ||
177 ntStatus == STATUS_PENDING)
180 if( ntStatus != STATUS_PENDING)
182 AFSCompleteRequest( Irp, ntStatus);
185 try_return( ntStatus);
188 IoSkipCurrentIrpStackLocation( Irp);
190 ntStatus = IoCallDriver( pControlDevExt->Specific.Control.LibraryDeviceObject,
194 // Indicate the library is done with the request
197 AFSClearLibraryRequest();
202 AFSDbgLogMsg( AFS_SUBSYSTEM_AUTHGROUP_PROCESSING,
203 AFS_TRACE_LEVEL_VERBOSE,
204 "%s (%08lX) File \"%wZ\" AuthGroup '%wZ' ntStatus %08lX\n",
207 &pFileObject->FileName,
212 if( uniGUIDString.Buffer != NULL)
214 RtlFreeUnicodeString( &uniGUIDString);
222 AFSControlDeviceCreate( IN PIRP Irp)
225 NTSTATUS ntStatus = STATUS_SUCCESS;
231 // For now, jsut let the open happen
234 Irp->IoStatus.Information = FILE_OPENED;
236 AFSCompleteRequest( Irp, ntStatus);
243 AFSOpenRedirector( IN PIRP Irp)
246 NTSTATUS ntStatus = STATUS_SUCCESS;
247 FILE_OBJECT *pFileObject = NULL;
248 IO_STACK_LOCATION *pIrpSp;
249 AFSDeviceExt* pDeviceExt =
250 (AFSDeviceExt *)AFSRDRDeviceObject->DeviceExtension;
255 pIrpSp = IoGetCurrentIrpStackLocation( Irp);
257 pFileObject = pIrpSp->FileObject;
259 pFileObject->FsContext = (PVOID) pDeviceExt->Fcb;
261 ASSERT(pFileObject->FsContext != NULL);
264 // Return the open result for this file
267 Irp->IoStatus.Information = FILE_OPENED;
269 Irp->IoStatus.Status = ntStatus;