tput cols/tput lines gives wrong results in podman exec

[praiskup]

Correct output from podman run

$ podman run --rm -ti fedora:30 bash
[root@830e92c167ba /]# tput cols
237
[root@830e92c167ba /]# tput lines
56
[root@830e92c167ba /]# 

Wrong output in exec from the same container:

$ podman exec -ti objective_bohr bash
[root@830e92c167ba /]# tput cols
80
[root@830e92c167ba /]# tput lines
24

rpm -q runc podman
runc-1.0.0-93.dev.gitb9b6cc6.fc30.x86_64
podman-1.5.1-3.fc30.x86_64`

[mheon]

@haircommander PTAL

[praiskup]

I used separate terminal, in separate tab in konsole (but I also tried separate terminal in gnome-terminal, and I have the same results).

[haircommander]

thanks for the issue @praiskup I was able to reproduce. I'll look into it

[debarshiray]

Interestingly, only the initial size is wrong. If the terminal emulator window is resized afterwards, then it picks up the changes correctly.

[mheon]

We might not be sending an initial resize message to Conmon

[haircommander]

yeah I found the issue. the initial resize request happens before conmon creates the ctl file, so it just errors out. I am trying to find a work around now

[praiskup]

I just need to claim that this used to work in some previous version of podman (or runc, or whatever). I noticed problems last week for the first time. Btw., thanks for the work-around with window resizing!

[juhp]

Another workaround is for a shell is to run reset :) (Yep, it is a regression as Rishi also explained in his report.)

[praiskup]

The reset workaround doesn't help in my case.

[debarshiray]

I wonder if there's some race involved here. For some reason this bug stopped reproducing today out of the blue, even with the same software versions that were reliably reproducing it until last Thursday.

Anyway, since @haircommander already figured it out, I'll wait for the fix. :)

[juhp]

@praiskup you are right - I came back to report the same - maybe I had resized the window...

[mheon]

@haircommander This is fixed, yes?

[haircommander]

yes it should be!

[mheon]

Closing