openssh bugs - May 2008 - [Bug 85] ssh -2 localhost od /bin/ls | true ignore SIGPIPE

https://bugzilla.mindrot.org/show_bug.cgi?id=85


Damien Miller <djm at mindrot.org> changed:

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




--- Comment #6 from Damien Miller <djm at mindrot.org>  2008-05-09
14:41:19 ---
The problem seems to be that protocol 2 lacks a way to "half close" a
channel, e.g. close its output while keeping its input open.

Markus, does this seem right?

-- 
Configure bugmail: https://bugzilla.mindrot.org/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are the assignee for the bug.
You are watching someone on the CC list of the bug.

https://bugzilla.mindrot.org/show_bug.cgi?id=85





--- Comment #7 from Markus Friedl <markus at openbsd.org>  2008-05-09
15:04:26 ---
(In reply to comment #6)
> The problem seems to be that protocol 2 lacks a way to "half
close" a
> channel, e.g. close its output while keeping its input open.
yes, there is only an 'EOF' message that means:
  I will not send data over this channel,
but there is no way to say: 
  I'm no longer interested in what you want to send to me.

-- 
Configure bugmail: https://bugzilla.mindrot.org/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are the assignee for the bug.
You are watching someone on the CC list of the bug.

https://bugzilla.mindrot.org/show_bug.cgi?id=85


Damien Miller <djm at mindrot.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |FIXED
             Blocks|                            |1452




--- Comment #8 from Damien Miller <djm at mindrot.org>  2008-05-10
02:30:24 ---
A fix to this bug has been committed and, barring any problems, will be
in OpenSSH 5.1:
> CVSROOT:        /cvs
> Module name:    src
> Changes by:     markus at cvs.openbsd.org  2008/05/09 10:16:06
> 
> Modified files:
>         usr.bin/ssh    : session.c
> 
> Log message:
> re-add the USE_PIPES code and enable it.
> without pipes shutdown-read from the sshd does not trigger
> a SIGPIPE when the forked program does a write.
> 
> ok djm@
> 
> 
> CVSROOT:        /cvs
> Module name:    src
> Changes by:     markus at cvs.openbsd.org  2008/05/09 10:17:51
> 
> Modified files:
>         usr.bin/ssh    : channels.c
> 
> Log message:
> error-fd race: don't enable the error fd in the select bitmask
> for channels with both in- and output closed, since the channel
> will go away before we call select();
> report, lots of debugging help and ok djm@
> 
> 
> CVSROOT:        /cvs
> Module name:    src
> Changes by:     markus at cvs.openbsd.org  2008/05/09 10:21:13
> 
> Modified files:
>         usr.bin/ssh    : channels.h clientloop.c nchan.c serverloop.c
> 
> Log message:
> unbreak
> ssh -2 localhost od /bin/ls | true
> ignoring SIGPIPE by adding a new channel message (EOW) that signals
> the peer that we're not interested in any data it might send.
> fixes bz #85; discussion, debugging and ok djm@
-- 
Configure bugmail: https://bugzilla.mindrot.org/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are the assignee for the bug.
You are watching someone on the CC list of the bug.

https://bugzilla.mindrot.org/show_bug.cgi?id=85


Damien Miller <djm at mindrot.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Depends on|                            |830




-- 
Configure bugmail: https://bugzilla.mindrot.org/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are the assignee for the bug.
You are watching someone on the CC list of the bug.