I haven't had time to investigate this yet
On Wed, 2 Feb 2022, Dmitry Belyavskiy wrote:
> Dear?Damien,
> Sorry for being repetitive - but should we consider it to be a known
> limitation?
>
> Many thanks in advance!
>
> On Fri, Jan 28, 2022 at 10:53 AM Dmitry Belyavskiy <dbelyavs at
redhat.com>
> wrote:
> Dear?Damien,
>
> On Fri, Jan 28, 2022 at 1:40 AM Damien Miller <djm at mindrot.org>
wrote:
> On Thu, 27 Jan 2022, Dmitry Belyavskiy wrote:
>
> > Hello,
> >
> > When we use scp in sftp mode to copy folder to the
> machines with the "old"
> > version of ssh, we get the following error:
> > =====> > $ scp -vvv -r test/ touser at
machine:/home/touser
>
> What version of OpenSSH are you using? There are a bunch
> of fixes in git
> HEAD after 8.8.
>
> > If I understand correctly, the failure is caused by the
> lack of the "
> > expand-path at openssh.com"
> > extension to sftp protocol in old releases and (lack of)
> processing it on
> > the server side.
>
> No, that extension is only invoked when a ~-prefixed path
> is used.
>
> AFAIK this was juat a behaviour difference: scp in sftp
> mode wasn't
> creating the destination directory if it didn't exist,
> whereas legacy
> scp would do so. It was fixed in the commit you identify
> below.
>
> > For the recent version self-compatibility it was fixed
> in
>
>https://github.com/openssh/openssh-portable/commit/ac7c9ec894ed0825d04ef69c
> 55babb49bab1d32e
>
> -d
>
> I've just retested with the recent master
> $ ./scp -S `pwd`/ssh -vvv -r -s `pwd`/openbsd-compat/ user at machine:
>
> debug2: subsystem request accepted on channel 0
> ./scp: debug2: Remote version: 3
> ./scp: debug2: Server supports extension "posix-rename at
openssh.com"
> revision 1
> ./scp: debug2: Server supports extension "statvfs at openssh.com"
> revision 2
> ./scp: debug2: Server supports extension "fstatvfs at
openssh.com"
> revision 2
> ./scp: debug2: Server supports extension "hardlink at
openssh.com"
> revision 1
> ./scp: debug2: Server supports extension "fsync at openssh.com"
revision
> 1
> ./scp: debug2: Server supports extension "lsetstat at
openssh.com"
> revision 1
> ./scp: debug2: Sending SSH2_FXP_STAT "/root"
> ./scp: debug3: Sent message fd 6 T:17 I:1
> ./scp: debug3: Received stat reply T:105 I:1 F:0x000f M:40550
> ./scp: debug3: source_sftp: copying local
> /home/dbelyavs/work/upstream/openssh-portable/openbsd-compat to remote
> /root/openbsd-compat
> ./scp: debug2: Sending SSH2_FXP_REALPATH "/root/openbsd-compat"
> ./scp: debug3: Sent message fd 6 T:16 I:2
> ./scp: realpath /root/openbsd-compat: No such file
> ./scp: upload "/root/openbsd-compat": path canonicalization
failed
> ./scp: failed to upload directory
> /home/dbelyavs/work/upstream/openssh-portable/openbsd-compat to
> /root/openbsd-compat
>
> The failure occurs even when I specify absolute paths on the
> source/destination machine.
>
> The destination machine has OpenSSH_8.0p1 with patches.
>
> --
> Dmitry Belyavskiy
>
>
>
> --
> Dmitry Belyavskiy
>
>