Re: [PATCH 3/5] tools/kvm/9p: Don't follow symlink on server

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On Sun, 19 Jun 2011 10:47:33 +0530, "Aneesh Kumar K.V" <aneesh.kumar@xxxxxxxxxxxxxxxxxx> wrote:
> On Sat, 18 Jun 2011 14:51:13 -0400, Sasha Levin <levinsasha928@xxxxxxxxx> wrote:
> > On Sat, 2011-06-18 at 23:19 +0530, Aneesh Kumar K.V wrote:
> > > Use lstat instead of stat
> > 
> > This patch should probably come after 9p2000.u support is added, since
> > now we transparently work 'through' symlinks (because legacy 9p2000
> > doesn't support them).
> > Once 9p2000.u support is added we could represent symlinks and then a
> > switch to lstat might be due.
> > 
> 
> Shouldn't we aim to support 9p2000.L directly rather than supporting all
> the three versions of protocol ? Linux guest have good support for
> 9p2000.L
> 
> Do you think the patch breaks any of the expectation of 9p2000 ?. It
> would be nice to get the correct file attributes when fetching
> attributes from the server, irrespective of whether client support symlink
> or not.

I sent Message-Id: <1308474599-9832-1-git-send-email-aneesh.kumar@xxxxxxxxxxxxxxxxxx>
which add error handling to tools/kvm/9p. I guess we don't want server
to follow symlink outside export path, hence open with O_NOFOLLOW.

-aneesh
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