sshd conflicts with mintty allocating /dev/tty[0-9]

[Alexey Luchko]

On 01.08.2011 18:51, Alexey Luchko wrote:
> I've run mkpasswd and mkgroups, installed sshd, run sshd-host-config,
> turned on privilege separation, installed it as a service.
>
> 'CYGWIN sshd' service starts normally but it closes connection right after
> successful login:
> """
> $ ssh localhost
> user@localhost's password:
> Connection to localhost closed by remote host.
> Connection to localhost closed.
> """
>
> Logged in sshd's account and started '/usr/sbin/sshd -d' and tries to login
> via ssh localhost. Tail of sshd output follows:
> """
> debug1: userauth-request for user user service ssh-connection method password
> debug1: attempt 2 failures 1
> Accepted password for user from ::1 port 63719 ssh2
> debug1: monitor_child_preauth: user has been authenticated by privileged
> process
> debug1: Entering interactive session for SSH2.
> debug1: server_init_dispatch_20
> debug1: server_input_channel_open: ctype session rchan 0 win 1048576 max 16384
> debug1: input_session_request
> debug1: channel 0: new [server-session]
> debug1: session_new: session 0
> debug1: session_open: channel 0
> debug1: session_open: session 0: link with channel 0
> debug1: server_input_channel_open: confirm session
> debug1: server_input_global_request: rtype no-more-sessions@openssh.com
> want_reply 0
> debug1: server_input_channel_req: channel 0 request pty-req reply 1
> debug1: session_by_channel: session 0 channel 0
> debug1: session_input_channel_req: session 0 req pty-req
> debug1: Allocating pty.
> debug1: session_pty_req: session 0 alloc /dev/tty2
> chown(/dev/tty2, 11135, 10513) failed: Bad file descriptor
> debug1: do_cleanup
> debug1: session_pty_cleanup: session 0 release /dev/tty2
> """
>
> It conflicts with mintty because every mintty allocates terminal for
> himself like this running in mintty:
> """
> $ ls -l `tty`
> crw--w---- 1 user Domain Users 136, 0 Aug 1 18:46 /dev/tty0
> """
>
> Version: CYGWIN_NT-6.1-WOW64 1.7.9(0.237/5/3) 2011-03-29 10:10 i686 Cygwin


Cygwin Configuration Diagnostics atteched.


--
Regards,
Alexey.
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