similar to: Channels API and ~& question

Please review the function below, forkoff(), meant to be used in clientloop.c instead of daemon() and the code in process_escapes(). The intention is to make ~D ( like ~& but also detach) possible and to make it possible for ssh -f (or ssh -f -f - see other thread on this) to detach, not just forkoff(). I also intend to use the same detach technique in a feature patch for the hang-on-exit

Markus, How's this patch? - a chan_wont_read()/chan_wont_write() API is added that is very much like chan_read_failed()/chan_write_failed(), but for the debug messages and chan_wont_*() don't ever call error() The 3.0.2p1 channel_pre_x11_open() uses chan_*_failed() but looks like it ought to use chan_wont_*() instead :) - forkoff() no longer fakes EOF for SSHv2 (still

Is anyone aware of a method to force termination of a single channel without waiting for the associated process to complete? I have a use case where my client submits several commands to be executed over the same session at the same time on separate channels. In some cases (cough df), one or more those commands may hang indefinitely. I detect that the command is not finishing in a reasonable

so, should this go into 3.5? Index: serverloop.c =================================================================== RCS file: /home/markus/cvs/ssh/serverloop.c,v retrieving revision 1.103 diff -u -r1.103 serverloop.c --- serverloop.c 24 Jun 2002 14:33:27 -0000 1.103 +++ serverloop.c 12 Jul 2002 16:34:20 -0000 @@ -388,6 +388,11 @@ buffer_append(&stderr_buffer, buf, len); } } + /*

I'd like a feature whereby ssh puts itself in the background after the first successful X11 (or other port) forwarding. The reason for this is simple: error handling. If the application fails to open the X display and exits, then the client can still exit with the application's exit code. But if the application opens the X display successfully, then it can just display any errors by

Background ========== "ssh -f ..." causes ssh to fork into the background when userauth successfully completes. WHAT === With this patch "ssh -f -f ..." causes ssh to fork into the background when the first forwarded port/x11 display/agent is successfully opened. WHY === This feature makes launching remote X11 apps more reliable: when ssh exits it must have exited because

Hi, protocolkeepalives sends ssh_msg_ignore, which the ssh2 server handles incorrectly (i.e. it produces some output to syslog, instead of ignoring the packet): Jul 9 11:58:07 ren sshd[16580]: error: Hm, dispatch protocol error: type 32 plen 4 This patch implements a highly advanced function to ignore these packets ;) Matthew -------------- next part -------------- An embedded and

When should sshd disconnect an SSHv2 connection? Markus Friedl says "for protocol v2 the client decides when to close the connection." In principle, I agree, because SSHv2 supports multiple sessions over the same connection, with the client able to launch new sessions anytime then it should be upto the client. But this would be a major cultural change for most users, and would break

The 4.6p1 sshd is logging this error during remote commands or file transfers: error: channel 0: chan_read_failed for istate 3 Platform is Solaris 8, 4.6p1 + OpenSSL 0.9.8d. The commands and transfers work correctly, so the error message appears to be spurious. The error message does not appear when processing logins. Otherwise 4.6p1 is running without any apparent problems. This error

https://bugzilla.mindrot.org/show_bug.cgi?id=1818 Summary: SSH2_MSG_CHANNEL_FAILURE on closed channel Product: Portable OpenSSH Version: 5.1p1 Platform: All OS/Version: All Status: NEW Severity: normal Priority: P2 Component: sshd AssignedTo: unassigned-bugs at mindrot.org ReportedBy:

The "integration" of SSH with apps is already there. Read the OpenSSH [or other SSH implementation's] man pages and the SSHv2 specs. RTFM! Essentially SSH supports tunneling of X11 traffic. The SSH daemon is responsible for creating a local X11 display endpoint and setting the DISPLAY environment variable appropriately, then the apps you run in SSH sessions with X11 forwarding do

What else can possibly be done to integrate SSH and apps? I mean, it works, doesn't it? Jim's message was unclear - I was left with the impression that Jim was not aware of the existing X11 forwarding in SSH. Cheers, Nico -- > -----Original Message----- > From: Gregory Leblanc [mailto:gleblanc at linuxweasel.com] > Sent: Friday, May 17, 2002 5:33 PM > To: OpenSSH Devel

Perhaps the man page should be fixed then, because neither rsh nor rlogin provide any kind of port forwarding, or X11 forwarding, etc... Also, the comparison between ssh and rsh is more appropriate if you're talking about SSHv1 and much less so if you're talking about SSHv2. Nico -- > -----Original Message----- > From: Eric Garff [mailto:egarff at omniture.com] > Sent:

When I encounter the problem with TCP port forwarding locking up, I'll see this on the client window (if I haven't invoked ssh with -q): chan_shutdown_read failed for #1/fd6: Transport endpoint is not connected chan_shutdown_read failed for #1/fd6: Transport endpoint is not connected This is with Blowfish encryption. I have to kill and restart the client when this happens. Phil

The command "ssh ls -l /doesnotexist" gives various responses: Running from a 200 MHz PentiumPro with dsa key added to ssh-agent: Mistakes worst to fast machine: To a faster 600 MHz dual processor i686 600 MHz machine: ls: /doesnotexist: No such file or directory -- correct nothing at all -- wrong ls: select: Bad file descriptor -- wrong

So, we just found some ugly behaviour of OpenSSH on Solaris. Sometimes, it seems, sshd gets started with SIGCHLD blocked, this, apparently, being the setting of sshd's parent (a shell no doubt); signal blocking is inherited across exec*(). I don't know exactly which shell, or what really is at fault, but it happens. The problem is that the code in collect_children() first blocks SIGCHLD

OpenStep, apparently, does not initialize new pty/tty modes to a sane default. I'm thinking this code snippet, added to tty_parse_modes() before the for(;;) loop should suffice: #ifdef HAVE_NEXT tio.c_oflag |= ONLCR; tio.c_lflag |= ECHO; #endif /* HAVE_NEXT */ Also, I've noticed that "ssh -t next_host stty" gives different output than an interactive session to the same

Hi, We have upgraded the openssh 4.6P1 on Solaris 8 servers. After upgrade we get the below error message whenever we execute the remote commands using ssh. Please let me know what the fix is for this. Apr 8 03:03:43 dvsrv10 sshd[25379]: [ID 800047 auth.info] Accepted publickey for osteam from 10.0.93.31 port 35856 ssh2 Apr 8 03:03:50 dvsrv10 sshd[25381]: [ID 800047 auth.error] error:

Yes, this is a patch against an older version of OpenSSH with other stuff anyways, BUT, it's so TRIVIAL(*), that you can see how it would apply to newer versions (which I've not tried). Here's the gist: server_loop2() has a race condition with respect to reception of SIGCHLD and checking/setting child_terminated. This patch does two things: wait_until_can_do_something() adds a 1

Using openssh-SNAP-20001016 all of our problems with hanging connections have gone away (woohoo!), and it seems to be working flawlessly, but I am seeing messages like this in syslog: Oct 24 16:57:48 dhumb301 sshd[17752]: error: channel 0: internal error: we do not read, but chan_read_failed for istate 8 Oct 24 16:57:59 dhumb301 sshd[17771]: error: select: Bad file descriptor Oct 24 16:58:30