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Date: Sun, 12 Apr 2015 16:53:47 +0200
From: Corinna Vinschen <corinna-cygwin AT cygwin DOT com>
To: cygwin AT cygwin DOT com
Subject: Re: [ANNOUNCEMENT] TEST RELEASE: Cygwin 2.0.0-2
Message-ID: <20150412145347.GT7343@calimero.vinschen.de>
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References: <announce DOT 20150412081225 DOT GA911 AT calimero DOT vinschen DOT de> <87sic5h3sb DOT fsf AT Rainer DOT invalid>
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On Apr 12 15:31, Achim Gratz wrote:
>=20
> THere seems to be a bug that causes sshd to be unable to change the new
> PTY to mode "0600" (I'm using privilege separation).
>=20
> ~ (2001) ll /dev/pty0 ; getfacl /dev /dev/pty0
> crw--w---- 1 ASSI Kein 136, 0 12. Apr 15:26 /dev/pty0

Hmm, works on the command line...

  $ ll /dev/pty0
  crw--w---- 1 corinna vinschen 136, 0 Apr 12 16:28 /dev/pty0
  $ chmod 600 !$
  chmod 600 /dev/pty0
  $ ll /dev/pty0
  crw------- 1 corinna vinschen 136, 0 Apr 12 16:28 /dev/pty0

...but I can easily reproduce it from sshd.  I'll have a look this week.

> # file: /dev/pty0
> # owner: ASSI
> # group: Kein
> user::rw-
> group::rw-
> other:rw-
>=20
> Reverting to the 1.7.35-1 DLL gets sshd working correctly again.
> Looking at the above I've questions about the permissions: on Linux the
> PTY would be writable by the tty group, but having it writable by "None"
> is surely a mistake an getfacl doesn't seem to report anything sensible
> on PTY.

The acl(2) function is not implemented for ptys.=20=20


Corinna

--=20
Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Maintainer                 cygwin AT cygwin DOT com
Red Hat

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