diff options
| author | Kevin Krakauer <krakauer@google.com> | 2019-08-02 14:04:28 -0700 |
|---|---|---|
| committer | gVisor bot <gvisor-bot@google.com> | 2019-08-02 14:05:48 -0700 |
| commit | b6a5b950d28e0b474fdad160b88bc15314cf9259 (patch) | |
| tree | 20c87b827742e9183e85bc9814ff1def354e3d1d /pkg/sentry/fs/tty/slave.go | |
| parent | b461be88a8036ca0455aceb8b6c723d6b6fded4f (diff) | |
Job control: controlling TTYs and foreground process groups.
(Don't worry, this is mostly tests.)
Implemented the following ioctls:
- TIOCSCTTY - set controlling TTY
- TIOCNOTTY - remove controlling tty, maybe signal some other processes
- TIOCGPGRP - get foreground process group. Also enables tcgetpgrp().
- TIOCSPGRP - set foreground process group. Also enabled tcsetpgrp().
Next steps are to actually turn terminal-generated control characters (e.g. C^c)
into signals to the proper process groups, and to send SIGTTOU and SIGTTIN when
appropriate.
PiperOrigin-RevId: 261387276
Diffstat (limited to 'pkg/sentry/fs/tty/slave.go')
| -rw-r--r-- | pkg/sentry/fs/tty/slave.go | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/pkg/sentry/fs/tty/slave.go b/pkg/sentry/fs/tty/slave.go index e30266404..944c4ada1 100644 --- a/pkg/sentry/fs/tty/slave.go +++ b/pkg/sentry/fs/tty/slave.go @@ -152,9 +152,16 @@ func (sf *slaveFileOperations) Ioctl(ctx context.Context, _ *fs.File, io usermem case linux.TIOCSCTTY: // Make the given terminal the controlling terminal of the // calling process. - // TODO(b/129283598): Implement once we have support for job - // control. - return 0, nil + return 0, sf.si.t.setControllingTTY(ctx, io, args, false /* isMaster */) + case linux.TIOCNOTTY: + // Release this process's controlling terminal. + return 0, sf.si.t.releaseControllingTTY(ctx, io, args, false /* isMaster */) + case linux.TIOCGPGRP: + // Get the foreground process group. + return sf.si.t.foregroundProcessGroup(ctx, io, args, false /* isMaster */) + case linux.TIOCSPGRP: + // Set the foreground process group. + return sf.si.t.setForegroundProcessGroup(ctx, io, args, false /* isMaster */) default: maybeEmitUnimplementedEvent(ctx, cmd) return 0, syserror.ENOTTY |