On Tue, 2019-07-09 at 18:15 +0100, Daniel P. Berrangé wrote:
Way back in the past, the "no_tty=1" option was added for
the remote
driver to disable local password prompting by disabling use of the local
tty:
commit b32f42984994a397441a1c48f1a002e906624c51
Author: Daniel P. Berrange <berrange(a)redhat.com>
Date: Fri Sep 21 20:17:09 2007 +0000
Added a no_tty param to remote URIs to stop SSH prompting for password
This was done by adding "-T -o BatchMode=yes -e none" args to ssh. This
achieved the desired results but is none the less semantically flawed
because it is mixing up config parameters for the local tty vs the
remote tty.
The "-T" arg stops allocation of a TTY on the remote host. This is good
for all libvirt SSH tunnels as we never require a TTY for our usage
model, so we should have just passed this unconditionally.
The "-e none" option disables the escape character for sessions with a
TTY. If we pass "-T" this is not required, but it also not harmful to
add it, so we should just pass it unconditionally too.
Only the "-o BatchMode=yes" option is related to disabling local
password prompts and thus needs control via the no_tty URI param.
Signed-off-by: Daniel P. Berrangé <berrange(a)redhat.com>
---
src/rpc/virnetsocket.c | 4 ++--
tests/virnetsockettest.c | 34 ++++++++++++++++++----------------
2 files changed, 20 insertions(+), 18 deletions(-)
Great commit message!
The change makes sense, and the ssh documentation confirms the
options you mention indeed mean what you claim they do :)
Reviewed-by: Andrea Bolognani <abologna(a)redhat.com>
--
Andrea Bolognani / Red Hat / Virtualization