Xin Li wrote:
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On 06/21/13 16:04, Miroslav Lachman wrote:
1) Is there some way to create relative symlinks with OpenSSH 6.1?
No. It seems like a regression and can not be worked around. I do
have a patch (attached; against crypto/openssh/), and my test shows
that it would fix the problem.
2) Was OpenSSH 6.1 tested before importing in to the base of
FreeBSD 8.4 release? These two bugs seems serious to me.
This code is not new: it was in OpenBSD 3 years ago, and in FreeBSD
for more than 2 years (r221420 or 2011-05-04); OpenSSH 6.1 was
imported last September. This issue you have just raised have been
there since FreeBSD 9.0-RELEASE.
So to me it seems like that the two issues are either rarely hit by
the general public (counting myself in: I have never used sftp to
create symbolic link remotely and have thus learned something new
today), or those who hit this have choose to keep silent about it.
Fortunately we have you noticed and reported the problem.
As a community effort, we really *need* people to grab in-development
snapshots and provide us the feedback.
I have two machines with FreeBSD 9.1, SSH version is reported as
SSH-2.0-OpenSSH_5.8p2_hpn13v11 and there is no problem with empty
VersionAddendum.
You are right about the second problem - sftp symlinks. They are broken
on this version as well but I didn't tried it before on this version.
3) Is there any chance to fix these bugs in FreeBSD repository, or
do we need to be "bug to bug" compatible with other systems using
OpenSSH 6.x?
I can not make a promise as I am not the maintainer. However, I have
already reported this issue to upstream OpenBSD developers, so if this
was accepted by the upstream, we will commit the change locally to fix
the issue.
Unfortunately, it is too late to fix this for 8.4-RELEASE, and unless
we see widespread complain, I don't think the problem would affect a
significant amount of users to warrant a "errata" for supported
release (8.4-RELEASE, 9.1-RELEASE), however, if it would be fixed, the
fix would be merged to 8-STABLE and 9-STABLE and will be shipped with
future releases, if the fix enters the development branch before them.
Thank you very much for your quick and kind response! I hope the fix
will be accepted upstream.
The patch seems really simple and I know how to apply it, but I am not
able to compile and install only fixed sftp command instead of the whole
userland.
Can you push me to the right direction?
Thank you again!
Miroslav Lachman
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