[CRIU] [PATCH 0/3 v3] crtools: close a signal descriptor after passing a preparation stage

[Andrei Vagin]

From: Andrei Vagin <avagin at virtuozzo.com>

From: Andrei Vagin <avagin at virtuozzo.com>

This patch adds the --siganl-fd FD option to specify a file descriptor.
CRIU will write '\0' to this descriptor and close it after passing
a preparation stage.

It is alternative way to demonizing a criu process after a preparation
stage. It's imposiable to get exit code, if a process has daemonized.

The introduced way allows to wait a preparation stage and to get an exit
code. It can be easy used from shell and other script languages.

v2: fix zdtm.py --rpc

Looks-good-to: Adrian Reber <adrian at lisas.de>

Andrei Vagin (3):
  crtools: close a signal descriptor after passing a preparation stage
  test: check exit codes for criu page-server and criu lazy-pages
  crtools: fix exit code for page-server

 Documentation/criu.txt    |  6 +++++
 criu/crtools.c            | 12 +++++++++-
 criu/include/cr_options.h |  1 +
 criu/include/util.h       |  1 +
 criu/uffd.c               |  3 +++
 criu/util.c               | 18 +++++++++++++++
 test/zdtm.py              | 57 +++++++++++++++++++++++++++++++++++++++--------
 7 files changed, 88 insertions(+), 10 deletions(-)

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2.7.4