Large File Access

This section discusses how to access large files using the 64-bit file server client API; how to intercept large file access from file server plugins and how to interface 3rd-party file systems with the file server to support large files.

Developers migrating a server implementation from the 32-bit RFile implementation to RFile64 or developing a new server should remember that the client may not be 64-bit aware. The client can still open a file using RFile and the server should handle the file accordingly.

• Guide to Large Files
  The enhanced file server supports large files, greater than 2GB, by introducing 64-bit variants of existing functions. This maintains binary and source compatibility.
• Changes to File Server Behaviour
  Describes the behaviour changes of APIs that have been made 64-bit aware. The signature of these APIs has not changed but the change in their behaviour may impact existing applications.
• Accessing Large Files using the 64-bit File Server Client API
  This tutorial set demonstrates how to access large files using the 64-bit File Server client API.
• Opening and Creating Large Files
  How to open and create large files.
• Reading from Large Files
  How to read from large files.
• Writing to Large Files
  How to write to large files.
• Locking a Large File
  How to lock a section of a large file.
• Unlocking a Large File
  How to unlock a section of a large file.
• Reading a Section of a Large File
  How to read a section of a large file.
• Seeking a Position in a Large File
  How to seek a particular position in a large file.
• Getting the Size of a Large File using RFile
  How to get the size of a large file through the file server client.
• Getting the Size of a Large File using TEntry
  Describes how to get the size of a large file through the directory entry class.
• Setting the File Size of a Large File
  Describes how to set the size of a file.
• Interfacing File Systems to the 64-bit File Server
  Describes the changes to existing file system interface APIs.
• Testing the Application
  This document describes the configuration or setting changes required to test applications that are new or that have been modified to access large files on the emulator and on the H4HRP.