Terminal reporting not working: 'not a tty'

[wrr]

Description

tty and ps commands fail to detect terminal when run under gVisor.
This is easiest to show with Docker, but if runsc is run directly with the "terminal": true in the config, it has the same problem.

$ docker run --runtime=runsc -it --rm ubuntu tty
not a tty

$ docker run --runtime=runsc -it --rm ubuntu ps t
  PID TTY      STAT   TIME COMMAND
    1 ?        Rs     0:00 ps t

Compare to the output with the default Docker runtime:

$ docker run -it --rm ubuntu tty
/dev/pts/0

$ docker run -it --rm ubuntu ps t
    PID TTY      STAT   TIME COMMAND
      1 pts/0    Rs+    0:00 ps t

Steps to reproduce

No response

runsc version

runsc version release-20260608.0
spec: 1.2.1

docker version (if using docker)

uname

No response

kubectl (if using Kubernetes)

repo state (if built from source)

No response

runsc debug logs (if available)

[MrEx3cut0r]

@wrr Hi, I`d like to work on this issue

[wrr]

@wrr Hi, I`d like to work on this issue

@MrEx3cut0r I'm just a gVisor user, it's probably best to coordinate with the core team members to discuss if and how they would like to address the issue.