linux-ext4 - Re: fuse2fs

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Message-ID: <20151121141013.GA4741@thunk.org>
Date:	Sat, 21 Nov 2015 09:10:13 -0500
From:	Theodore Ts'o <tytso@....edu>
To:	Lennart Lövstrand <lennart@...strand.com>
Cc:	linux-ext4@...r.kernel.org, darrick.wong@...cle.com
Subject: Re: fuse2fs

Hi Lennart,

Apologies for the delay in getting back to you.  Things have been very
busy this past month, and your e-mail slipped between the cracks.

> I got it to compile under OS X 10.11 with a few minor tweaks, but
> when testing it, I noticed pretty quickly that I couldn't create new
> files. I tracked it down to the UID & GID fields not being set on
> new inodes. This caused them to be owned by root in op_create, which
> in turn made its call to __op_open fail since it couldn't open the
> file as the current user, which in turn made op_create fail (even
> though the file actually was created). It seems like such a simple
> and obvious error that I'm surprised it's there and it makes me
> wonder if this code really has been used in read/write mode to any
> large extent.
> 
> Could you advise?  I notice that it's marked with "Copyright
> Oracle", so I'm assuming it was contributed by someone else and not
> actually your own code.

Yes, if you had checked the git logs, you would have seen that Darrick
contributed the code.

It looks like op_create is missing a call to set the inode uid/gid
from the fuse_context's uid/gid fields, but I'm not an expert on FUSE;
Darrick should be able to comment more intelligently on your bug
report.

> BTW, if I were to create a decent .fs package for OS X, would you be
> interested in making it part of the e2fsprogs source, or do you
> think it would be better to make it a separate distribution?  What
> kind of attribution would you like me to put into it in that case?
> My intent would be to distribute it freely & openly, of course.

I'm not sure what a ".fs package" is.  Is this some kind of spec file
ala the RPM spec file or the debian dpkg files that are used to
build a package?  If so, sure, we could put something like that in the
contrib directory along with directions of how to build a new OSX
package from source.

Cheers,

					- Ted
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