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Date: Wed, 7 Feb 2024 20:55:15 +0100
To: cygwin AT cygwin DOT com
Subject: Re: cygsshd fails due to bad ownership or modes of /cygdrive/c/Users
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From: Corinna Vinschen via Cygwin <cygwin AT cygwin DOT com>
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Cc: Corinna Vinschen <corinna-cygwin AT cygwin DOT com>
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On Feb  7 20:27, Corinna Vinschen via Cygwin wrote:
> On Feb  7 20:23, ASSI via Cygwin wrote:
> > Frank-Ulrich Sommer via Cygwin writes:
> > > I'm trying to run cygsshd on my PC with Windows 11 and connect from a
> > > linux machine. I have added the public key to
> > > /cygdrive/c/Users/xxx/.ssh/authorized_keys and created a symbolic link
> > > from  /cygdrive/c/Users/xxx/.ssh to /home/xxx/.ssh. As usual I checked
> > > the access rights and mode of the .ssh directory (700 and belongs to
> > > user xxx) and the authorized_keys file (600 and also belongs to user
> > > xxx) and also of the home directory (had to change ownership).
> > 
> > Just bind mount instead of symlinking .ssh and everything should work.
> 
> Assuming you have installed CYgwin under your own account, that's even
> better than utilizing "StrictModes"

Scratch the "Assuming you have installed Cygwin under your own account"
thingy.  The safe_path() function in OpenSSH checks the path of files
in your home dir only up to the home directory itself.  However, that
depends on

  $ getent passwd <your-account-name>

returning the correct home dir.

Personally I just use Cygwin's /home/corinna as home path and symlink
or bind mount the Windows stuff into it, e.g.

  $ ln -s /proc/cygdrive/c/Users/corinna ~/winhome


Corinna

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