Пример #1
0
        public override Int32 Create(
            String FileName,
            UInt32 CreateOptions,
            UInt32 GrantedAccess,
            UInt32 FileAttributes,
            Byte[] SecurityDescriptor,
            UInt64 AllocationSize,
            out Object FileNode0,
            out Object FileDesc,
            out FileInfo FileInfo,
            out String NormalizedName)
        {
            FileNode0      = default(Object);
            FileDesc       = default(Object);
            FileInfo       = default(FileInfo);
            NormalizedName = default(String);

            FileNode FileNode;
            FileNode ParentNode;
            Int32    Result = STATUS_SUCCESS;

            FileNode = FileNodeMap.Get(FileName);
            if (null != FileNode)
            {
                return(STATUS_OBJECT_NAME_COLLISION);
            }
            ParentNode = FileNodeMap.GetParent(FileName, ref Result);
            if (null == ParentNode)
            {
                return(Result);
            }

            if (0 != (CreateOptions & FILE_DIRECTORY_FILE))
            {
                AllocationSize = 0;
            }
            if (FileNodeMap.Count() >= MaxFileNodes)
            {
                return(STATUS_CANNOT_MAKE);
            }
            if (AllocationSize > MaxFileSize)
            {
                return(STATUS_DISK_FULL);
            }

            if ("\\" != ParentNode.FileName)
            {
                /* normalize name */
                FileName = ParentNode.FileName + "\\" + Path.GetFileName(FileName);
            }
            FileNode = new FileNode(FileName);
            FileNode.MainFileNode            = FileNodeMap.GetMain(FileName);
            FileNode.FileInfo.FileAttributes = 0 != (FileAttributes & (UInt32)System.IO.FileAttributes.Directory) ?
                                               FileAttributes : FileAttributes | (UInt32)System.IO.FileAttributes.Archive;
            FileNode.FileSecurity = SecurityDescriptor;
            if (0 != AllocationSize)
            {
                Result = SetFileSizeInternal(FileNode, AllocationSize, true);
                if (0 > Result)
                {
                    return(Result);
                }
            }
            FileNodeMap.Insert(FileNode);

            Interlocked.Increment(ref FileNode.OpenCount);
            FileNode0      = FileNode;
            FileInfo       = FileNode.GetFileInfo();
            NormalizedName = FileNode.FileName;

            return(STATUS_SUCCESS);
        }