[CRIU] [PATCH 2/4] tty: Dump a hanging up terminal

[Cyrill Gorcunov]

If we've met a hanging up terminal we can escape
lot of work but dump a minimum information needed
for restore.

For this sake tty_get_sid_pgrp melds in two previous
helpers tty_get_sid, tty_get_pgrp and informs the
caller that tty is hanging up.

Signed-off-by: Cyrill Gorcunov <gorcunov at openvz.org>
---
 tty.c |   64 +++++++++++++++++++++++++++++++++++++---------------------------
 1 files changed, 37 insertions(+), 27 deletions(-)

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