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Date: Mon, 4 Nov 2019 15:17:18 +0100
From: Corinna Vinschen <corinna-cygwin AT cygwin DOT com>
To: Tim Adye <T DOT J DOT Adye AT rl DOT ac DOT uk>
Cc: cygwin AT cygwin DOT com
Subject: Re: ssh-agent doesn't die
Message-ID: <20191104141718.GM3372@calimero.vinschen.de>
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Mail-Followup-To: Tim Adye <T DOT J DOT Adye AT rl DOT ac DOT uk>, cygwin AT cygwin DOT com
References: <319e26c0-32f0-40b7-2137-c7de170a3486 AT rl DOT ac DOT uk> <20191103190052 DOT GI3372 AT calimero DOT vinschen DOT de> <38e07653-1a09-c398-d2ab-557965046b93 AT rl DOT ac DOT uk>
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On Nov  4 11:49, Tim Adye wrote:
> On 03/11/2019 19:00, Corinna Vinschen wrote:
> > On Sep 27 00:42, Tim Adye wrote:
> > > Hi,
> > >=20
> > > I have noticed a (new?) problem with using ssh-agent to start a sessi=
on, eg.
> > > with
> > >=20
> > >  =C2=A0 ssh-agent xterm &
> > >=20
> > > When the xterm (or whatever) command completes, the ssh-agent process=
 is
> > > still left running in the background. It should stop once its subproc=
ess is
> > > done.
> > >=20
> > > As a simple test example, consider:
> > >=20
> > > /bin/ssh-agent /bin/sleep 10
> > >=20
> > > While the sleep is still running, ps shows:
> > >=20
> > >  =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 PID=C2=A0=C2=A0=C2=A0 PPID=C2=A0=C2=
=A0=C2=A0 PGID=C2=A0=C2=A0=C2=A0=C2=A0 WINPID=C2=A0=C2=A0 TTY=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 UID=C2=A0=C2=A0=C2=A0 STIME COMMAND
> > >  =C2=A0=C2=A0=C2=A0=C2=A0 1694=C2=A0=C2=A0=C2=A0 1693=C2=A0=C2=A0=C2=
=A0 1694=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 1576=C2=A0 ?=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 22534 00:01:10
> > > /usr/bin/ssh-agent
> > >  =C2=A0=C2=A0=C2=A0=C2=A0 1653=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 1=
=C2=A0=C2=A0=C2=A0 1653=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 11740=C2=A0 cons1=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0 22534 00:00:37
> > > /usr/bin/bash
> > >  =C2=A0=C2=A0=C2=A0=C2=A0 1693=C2=A0=C2=A0=C2=A0 1653=C2=A0=C2=A0=C2=
=A0 1693=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 1552=C2=A0 cons1=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0 22534 00:01:10
> > > /usr/bin/sleep
> > > [...]
> > > Once the sleep finishes, ps shows:
> > >=20
> > >  =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 PID=C2=A0=C2=A0=C2=A0 PPID=C2=A0=C2=
=A0=C2=A0 PGID=C2=A0=C2=A0=C2=A0=C2=A0 WINPID=C2=A0=C2=A0 TTY=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 UID=C2=A0=C2=A0=C2=A0 STIME COMMAND
> > >  =C2=A0=C2=A0=C2=A0=C2=A0 1694=C2=A0=C2=A0=C2=A0 1693=C2=A0=C2=A0=C2=
=A0 1694=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 1576=C2=A0 ?=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 22534 00:01:10
> > > /usr/bin/ssh-agent
> > >  =C2=A0=C2=A0=C2=A0=C2=A0 1653=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 1=
=C2=A0=C2=A0=C2=A0 1653=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 11740=C2=A0 cons1=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0 22534 00:00:37
> > > /usr/bin/bash
> > >=20
> > > ie. ssh-agent is still running, though its PPID no longer exists.
> > I pushed a patch and created new developer snapshots.  Please test the
> > latest from https://cygwin.com/snapshots/
>=20
> Hi Corinna,
>=20
> That fixes the problem! With cygwin1-20191103.dll.xz installed as
> /usr/bin/cygwin1.dll, all my ssh-agent processes exit properly.
>=20
> > Thanks,
> > Corinna
>=20
> Thanks for the excellent fix,
> Tim.

Thanks for testing,
Corinna

--=20
Corinna Vinschen
Cygwin Maintainer

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