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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(),
126 if( pAuthGroup != NULL)
129 RtlStringFromGUID( *pAuthGroup,
132 AFSDbgLogMsg( AFS_SUBSYSTEM_AUTHGROUP_PROCESSING,
133 AFS_TRACE_LEVEL_VERBOSE,
134 "%s (%p) Located AuthGroup %wZ after validation\n",
142 AFSDbgLogMsg( AFS_SUBSYSTEM_AUTHGROUP_PROCESSING,
143 AFS_TRACE_LEVEL_VERBOSE,
144 "%s (%p) Failed to locate AuthGroup\n",
153 if( pFileObject == NULL ||
154 pFileObject->FileName.Buffer == NULL)
157 AFSDbgLogMsg( AFS_SUBSYSTEM_FILE_PROCESSING,
158 AFS_TRACE_LEVEL_VERBOSE,
159 "AFSCommonCreate (%p) Processing volume open request\n",
162 ntStatus = AFSOpenRedirector( Irp);
164 AFSCompleteRequest( Irp,
167 try_return( ntStatus);
172 // Check the state of the library
175 ntStatus = AFSCheckLibraryState( Irp);
177 if( !NT_SUCCESS( ntStatus) ||
178 ntStatus == STATUS_PENDING)
181 if( ntStatus != STATUS_PENDING)
183 AFSCompleteRequest( Irp, ntStatus);
186 try_return( ntStatus);
189 IoSkipCurrentIrpStackLocation( Irp);
191 ntStatus = IoCallDriver( pControlDevExt->Specific.Control.LibraryDeviceObject,
195 // Indicate the library is done with the request
198 AFSClearLibraryRequest();
203 AFSDbgLogMsg( AFS_SUBSYSTEM_AUTHGROUP_PROCESSING,
204 AFS_TRACE_LEVEL_VERBOSE,
205 "%s (%p) File \"%wZ\" AuthGroup '%wZ' ntStatus %08lX\n",
208 &pFileObject->FileName,
213 if( uniGUIDString.Buffer != NULL)
215 RtlFreeUnicodeString( &uniGUIDString);
223 AFSControlDeviceCreate( IN PIRP Irp)
226 NTSTATUS ntStatus = STATUS_SUCCESS;
232 // For now, jsut let the open happen
235 Irp->IoStatus.Information = FILE_OPENED;
237 AFSCompleteRequest( Irp, ntStatus);
244 AFSOpenRedirector( IN PIRP Irp)
247 NTSTATUS ntStatus = STATUS_SUCCESS;
248 FILE_OBJECT *pFileObject = NULL;
249 IO_STACK_LOCATION *pIrpSp;
250 AFSDeviceExt* pDeviceExt =
251 (AFSDeviceExt *)AFSRDRDeviceObject->DeviceExtension;
256 pIrpSp = IoGetCurrentIrpStackLocation( Irp);
258 pFileObject = pIrpSp->FileObject;
260 pFileObject->FsContext = (PVOID) pDeviceExt->Fcb;
262 ASSERT(pFileObject->FsContext != NULL);
265 // Return the open result for this file
268 Irp->IoStatus.Information = FILE_OPENED;
270 Irp->IoStatus.Status = ntStatus;