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/dir.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/dir.go')
| -rw-r--r-- | pkg/sentry/fs/tty/dir.go | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/pkg/sentry/fs/tty/dir.go b/pkg/sentry/fs/tty/dir.go index 1d128532b..2f639c823 100644 --- a/pkg/sentry/fs/tty/dir.go +++ b/pkg/sentry/fs/tty/dir.go @@ -129,6 +129,9 @@ func newDir(ctx context.Context, m *fs.MountSource) *fs.Inode { // Release implements fs.InodeOperations.Release. func (d *dirInodeOperations) Release(ctx context.Context) { + d.mu.Lock() + defer d.mu.Unlock() + d.master.DecRef() if len(d.slaves) != 0 { panic(fmt.Sprintf("devpts directory still contains active terminals: %+v", d)) |