[ros-dev] IFS wrapper project proposal draft

[Adam]

Let us not limit ourselves to raw JFS though. Why not improve it while we  
can? Add support for on-the-fly file encryption in there for example. Just  
thinkin. :)

On Sat, 09 Apr 2011 20:41:24 +1000, Love Nystrom <love.nystrom at gmail.com>  
wrote:

> On Wed, Apr 6, 2011 at 2:52 AM, Bryan Donlan <bdonlan at gmail.com> wrote:
>
>> On Tue, Apr 5, 2011 at 03:56, Love Nystrom <love.nystrom at gmail.com>  
>> wrote:
>> > Seen as NTFS is (and always will be?) not well documented, I've been
>> > thinking about supporting some alternative, OSS, journaling file
>> system in ReactOS,
>> > e.g. ReiserFS,
>>
>> A nice idea, but I think I'll have my hands full enough trying to
>> refactor the IFS API, without having to figure out the platform
>> dependencies in an existing filesystem (such as JFS or ReiserFS or
>> even ntfs-3g) at the same time... :) If there's time at the end I
>> suppose it might be an interesting thing to try, or if someone else
>> wants to work on the filesystem porting side I could work with them on
>> it.
>>
>
> Well .. I didn't actually mean for *You* to port ReiserFS, as well as
> refactoring IFS ;)
>
> In fact, there are some OSS ReiserFS IFS implementations already  
> available.
> A good summary of the situation is here:
> http://www.reactos.org/wiki/File_Systems/ReiserFS
> Also some forum points of view:
> http://www.reactos.org/forum/viewtopic.php?t=1689
>
> ResierFS 3 has two OSS IFS implementations, one at SourceForge and one at
> Umeå University,
> but according to Hans Reiser himself, version 3 is considered deprecated  
> due
> to design shortcomings.
> ReiserFS 4 has a Student Project in Switzerland, which they are willing  
> to
> release to ReactOS.
>
> AFAIK all of these implementations are built with MS IFS SDK, so they  
> will
> require some
> work to build properly under RosBE, and testing testing testing.
> Unfortunately I myself am bogged down by RL, so I can't find the time,
> at least not now .. maybe next winter :(
>
>
>
>> I do hope to create an API that is similar to what unix VFSes expose,
>> so it ought to make porting easier in the end.
>>
>
> That might make it easier to port e.g JFS to ReactOS.
>
> After contacting Dave Kleinkamp, maintainer of the Linux JFS  
> implementation,
> which lives at SourceForge, I have retrieved the original IBM OSS  
> snapshot,
> JFS 0.0.1, available by FTP from 147.52.159.12/system/
>
> According to him, the Linux version was ported from OS/2, as I suspected,
> and not from AIX as we previously concluded, so the 0.0.1 code should be
> at least a good reference, if not a starting point, for an IFS port.
> The current Linux JFS supports both extended attributes and ACLs,
> making it attractive as a starting point, possibly eased by Your wrapper,
> but all of these implementations are tied pretty hard to the Unix file
> model,
> AFAI could see, so it may take a *lot* of work to create an IFS port.
>
>
>> "common sense" to make it a success, and not a mess ;).
>> Only one way to find out!
>>
>
> Oh so true ;)
>
> Good Luck and Best Regards
> // Love N


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