Commit Graph

4 Commits

Author SHA1 Message Date
Kevin Krakauer 339536de5e Check that a file is a regular file with open(O_TRUNC).
It was possible to panic the sentry by opening a cache revalidating folder with
O_TRUNC|O_CREAT.

Avoids breaking php tests.

PiperOrigin-RevId: 280533213
2019-11-14 16:08:34 -08:00
Kevin Krakauer 0a8a75f3da Job control: controlling TTYs and foreground process groups.
Adresses a deadlock with the rolled back change:
b6a5b950d2
Creating a session from an orphaned process group was causing a lock to be
acquired twice by a single goroutine. This behavior is addressed, and a test
(OrphanRegression) has been added to pty.cc.

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: 270088599
2019-09-19 11:36:47 -07:00
Bhasker Hariharan 54bf2e8eff Automated rollback of changelist 261387276
PiperOrigin-RevId: 266491264
2019-08-30 18:15:32 -07:00
Kevin Krakauer b6a5b950d2 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
2019-08-02 14:05:48 -07:00