Brought the document up to date; triggered by an update to this document by
Kamikazow which can be seen as an attachment to bug #1356. git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@21831 a95241bf-73f2-0310-859d-f6bbb57e9c96
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Axel Dörfler
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<TITLE>Documentation and Resources for writing BeOS File Systems</TITLE>
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<TITLE>Resources for the Be File System</TITLE>
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<BODY text="#000000" link="#0000FF" bgcolor="#FFFFFF">
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<BODY text="#000000" link="#0000FF" bgcolor="#FFFFFF">
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<H1>Hints for BeOS File System Authors</H1>
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<H1>Resources for the Be File System</H1>
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<P>Besides the example DOS file system that comes with the BeOS developers
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<p>Probably the best resource for a description of the inner workings of BFS is the
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stuff, there's also a CD-ROM file system example. If you installed the
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book "Practical File System Design with the Be File System" written by Dominic
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optional stuff on the BeOS 5.0 Pro CD-ROM (or the developer's kit from the free
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Giampaolo and published by Morgan Kaufmann Publishers. Although that book is out of
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site), it's at: /boot/optional/sample-code/add-ons/iso9660
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print, it's available as a free download from
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<A HREF="http://www.letterp.com/~dbg/">Dominic's web site</A>.
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<P>On <A HREF="http://www.bebits.com/">BeBits</A> you can get source code
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<p>If you prefer to see how it works in code, please have a look at Haiku's BFS
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examples from a few programs, such as AtheOS FS (<A
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implementation - you can find that in the SVN repository under
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HREF="http://www.bebits.com/app/2028">app 2028 on BeBits</A>). There used to
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src/add-ons/kernel/file_systems/bfs/. This code is not mature yet, but is considered
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be a copy of NTFS too with source (<A HREF="http://www.bebits.com/app/620">app
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to be fairly stable.
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620 on BeBits</A>), but the site seems to be down. There are also other file
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systems there, but source is not included (some have it available on request).
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<P>Another useful source of information is the <A
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<p>If you are interested in the Haiku file system API, please refer to its documentation
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HREF="http://www.be.com/developers/dev_lib/index.html">BeOS developer library
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as part of the Haiku book.
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web site</A>. It has some articles on file systems, the most relevant being
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the <A
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HREF="http://www-classic.be.com/aboutbe/benewsletter/volume_III/Issue20.html#Insight">One
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File Network File System</A>, which shows one way of combining a user space
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program with a kernel file system stub. Another good one is <A
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HREF="http://www-classic.be.com/aboutbe/benewsletter/Issue52.html#Insight">about
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the FSP</A> (file system protocol). The prior issue describes what <A
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HREF="http://www-classic.be.com/aboutbe/benewsletter/Issue51.html#Insight">features
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the BFS supports</A>. There are lots of other tangentially related articles,
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such as ones on device drivers, programming in kernel mode, debugging, etc.
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<P>There's also the very good <CITE>Practical File System Design</CITE> book
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by Dominic Giampaolo, from <A HREF="http://www.mkp.com/">Morgan Kaufmann
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Publishers</A>, read their <A
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HREF="http://www.mkp.com/books_catalog/catalog.asp?ISBN=1-55860-497-9">catalog
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entry</A> for more info about the book.
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<P>Finally, there's <A
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HREF="http://www.google.com/search?q=%22Alexander+G.+M.+Smith%22">Alexander G.
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M. Smith</A>'s ongoing documentation of the file system API, condensed from all
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these sources and from his continuing experiences with trying to write a RAM
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file system. You can get the StyledEdit text file with the <A
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HREF="http://www.achilles.net/~agmsmith/beos/FileSystemAPINotes20011018.zip">October
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18 2001 version</A> or check the <A
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HREF="http://www.achilles.net/~agmsmith/beos/">BeOS directory</A> on his site
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for newer versions.
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<P><FONT SIZE="-1">Last updated November 11, 2001 by AGMS.</FONT>
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