Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people, just like you, are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
Solved

Is there any way to open a file in Windows using ONLY the FRN (File Reference Number)?

Posted on 2007-11-27
5
430 Views
Last Modified: 2013-12-03
Is there any way to open a file in Windows using ONLY the FRN (File Reference Number)?

This is for a file system  that does NOT support change journal, but it does support FRN.  I need to be able to open the file only using the FRN, and I'm looking for a Windows API that would allow me to do that.
0
Comment
Question by:Axter
  • 2
5 Comments
 
LVL 22

Expert Comment

by:grg99
ID: 20357234
Nope, but you can either call the undocumented FRN to path API, or build your own FRN database:


http://www.microsoft.com/msj/1099/journal2/journal2.aspx

0
 
LVL 30

Author Comment

by:Axter
ID: 20357760
The link you posted requires change journal.
As I stated in my question, this file system does not support change journal.

The database method will not work, since that would defeat the purpose of the application.
The application is building a database using a third party API, which gives file name and FRN.
Since this file system is shared between both Windows and UNIX, the files can have names that are the same, but with different case.  The files can also have characters not allowed by Windows.

When this happens, the file name given by the API is not the name the Windows program can use to access the file.
So I'm trying to figure out a way to determine the Windows mangled name (foofoo~1.txt) for a given file using the FRN, without having to iterate through the directory, which also may have a mangled name.
0
 
LVL 30

Accepted Solution

by:
Axter earned 0 total points
ID: 20359183
I found an answer to my question.
You can open a file using FRN by using FILE_OPEN_BY_FILE_ID option with NtCreateFile API.

I'll be posting a request to convert this question to a PAQ.
0
 
LVL 1

Expert Comment

by:Computer101
ID: 20388283
Closed, 500 points refunded.
Computer101
EE Admin
0

Featured Post

Free Tool: Path Explorer

An intuitive utility to help find the CSS path to UI elements on a webpage. These paths are used frequently in a variety of front-end development and QA automation tasks.

One of a set of tools we're offering as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
Path to  STL Map header file 1 69
Beginner to Unreal Engine 4 5 94
How to remove Recent Projects from Embarcadero C++ builder XE10. Berlin 2 66
max float value 3 51
A theme is a collection of property settings that allow you to define the look of pages and controls, and then apply the look consistently across pages in an application. Themes can be made up of a set of elements: skins, style sheets, images, and o…
Whether you've completed a degree in computer sciences or you're a self-taught programmer, writing your first lines of code in the real world is always a challenge. Here are some of the most common pitfalls for new programmers.
The goal of this video is to provide viewers with basic examples to understand how to use strings and some functions related to them in the C programming language.
The goal of the tutorial is to teach the user how to use functions in C++. The video will cover how to define functions, how to call functions and how to create functions prototypes. Microsoft Visual C++ 2010 Express will be used as a text editor an…

790 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question