sftp chroot_safe

Martin Nordin martin.nordin at gmail.com
Sun Dec 3 20:15:22 UTC 2006

If I do a su <sftp user> I get this error:

Cannot execute /usr/lib/ssh/sftp-server-chroot: Exec format error

I'm not sure what privileges should be set on the chroot script, at the
moment it is like this:
# ls -l /usr/lib/ssh/
-rwxrwxrwx 1 root root    216 Dec  3 20:31 sftp-server-chroot


On 12/3/06, Martin Nordin <martin.nordin at gmail.com> wrote:
> Hello.
> I've tried to follow the sftp + chroot_safe tutorial
> <http://crux.nu/Main/ChrootSFTP> on the crux page but I can't get it to
> work.
> I can sftp/ssh to my machine as my usual user so I think the basic
> ssh/sftp setup is ok.
> I've followed the tutorial in minute detail but when I attempt to sftp as
> the sftp-user the connection is cut immediately without error messages.
> I've added my usual user to the /etc/sudoers exactly like the sftp usr and
> when I run sudo /usr/lib/ssh/sftp-server-chroot I get this output:
> Couldn't open /dev/null: No such file or directory
> If I do a strace /usr/lib/ssh/sftp-server I can see that the sftp-server
> prg performs an open(/dev/null) but when I have chrooted to the sftp usr
> home dir the /dev/null is not there, of course.
> Does anyone of you have any idea of what I'm doing wrong or how I can get
> this to work?
> Thanks,
> Martin
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