openssh bugs - May 2011 - [Bug 1902] New: persistent mux master should chdir away from the current directory

https://bugzilla.mindrot.org/show_bug.cgi?id=1902

           Summary: persistent mux master should chdir away from the
                    current directory
           Product: Portable OpenSSH
           Version: 5.8p2
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: P2
         Component: ssh
        AssignedTo: unassigned-bugs at mindrot.org
        ReportedBy: Bert.Wesarg at googlemail.com


The persistent mux master keeps the same pwd where the initial call to
ssh/scp happen. This is bad because this may be a mountpoint from an
USB stick or sshfs, which can't be unmounted since than.

There are three possible proposals where to change into:

* the directory where the mux socket is in
* the users home directory
* the directory where the UserKnownHostsFile file is in

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https://bugzilla.mindrot.org/show_bug.cgi?id=1902

--- Comment #1 from Damien Miller <djm at mindrot.org> 2011-05-20 12:25:29
EST ---
Created attachment 2049
  --> https://bugzilla.mindrot.org/attachment.cgi?id=2049
/home/djm/bz1902.diff

chdir to dirname(ControlPath)

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https://bugzilla.mindrot.org/show_bug.cgi?id=1902

Damien Miller <djm at mindrot.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |djm at mindrot.org

--- Comment #2 from Damien Miller <djm at mindrot.org> 2011-05-20 12:27:18
EST ---
Unfortunately, I just thought of an annoying wrinkle: this will break
any relative paths to known hosts files. Perhaps these should be run
through derelativise_path() first?

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