So, here's the enhanced version of the first try.
Changes are:
1. The wrapper name is criu-ns instead of crns.py
2. The CLI is absolutely the same as for criu, since the script
re-execl-s criu binary. E.g.
scripts/criu-ns dump -t 1234 ...
just works
3. Caller doesn't need to care about substituting CLI options,
instead, the scripts analyzes the command line and
a) replaces -t|--tree argument with virtual pid __if__ the
target task lives in another pidns
b) keeps the current cwd (and root) __if__ switches to another
mntns. A limitation applies here -- cwd path should be the
same in target ns, no "smart path mapping" is performed. So
this script is for now only useful for mntns clones (which
is our main goal at the moment).
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>
Looks-good-to: Andrey Vagin <avagin@openvz.org>
