Re: sshfs and autofs

[Marc Weber <marco-oweber@gmx.de>]

Excerpts from Stef Bon's message of Wed Dec 23 22:59:48 +0100 2009:
> Stef Bon wrote:
> >
> >
> > This is the whole problem, because this is not easy. The automounter 
> > (read man 5 autofs) can offer variables like USER, UID, etc,HOST
> > of the user requesting the mount (according to the manpage). Then to 
> > present this user a suitable dialog... maybe via dbus???
> 
> I'm silly here, the user is not the problem, this is already available, 
> in the options, or - in my construction - in the config file, in the 
> parameter AUTOFS_USER
> and in the mountpath, but the environment this user is using! A pid of 
> the process would be very usefull, for example.
> But this is not easy. When I'm logged in twice with the same account, 
> which session should get the question for the passphrase?

About which session are you talking now? A ssh-agent session determined
by SSH_AGENT_PID and SSH_AUTH_SOCKET ?

Add this to your .bashrc or .zshrc:

reuseSSHAgent () {
        local f=~/.current-ssh-agent
        . $f || true
        ps -p "$SSH_AGENT_PID" &> /dev/null || {
                ssh-agent | grep -v echo > $f
                . $f
                ssh-add
        }
}
reuseSSHAgent

If there is a ssh agent running it will be used if not it will be
started. Then ssh-add will be run (I use only one key so this is
comfortable to me ..)

Maybe I should check that the socket file exists then I would'nt have to
run ps.

Gentoo has a nice script called "keychain" which provides this and more
for ssh-agent and the gnu-gpg agent. However I felt it was too bloated
and replaced it by this function.

You really don't want to type your password twice, do you ? :)

Marc Weber