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criu-ns: add top-level conditional execution

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Execute actions only if run as a script.
https://docs.python.org/3/library/__main__.html

Signed-off-by: Radostin Stoyanov <rstoyanov@fedoraproject.org>
This commit is contained in:
Radostin Stoyanov 2021-07-26 21:21:59 +01:00 • committed by Andrei Vagin
parent f70605ef1e
commit 868bffba4d
1 changed files with 15 additions and 11 deletions
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26
scripts/criu-ns
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@ -205,7 +205,7 @@ def wrap_dump():
return _wait_for_process_status(pid)
if len(sys.argv) == 1:
def show_usage():
print("""
Usage:
{0} dump|pre-dump -t PID [<options>]
@ -215,16 +215,20 @@ Usage:
pre-dump pre-dump task(s) minimizing their frozen time
restore restore a process/tree
""".format(sys.argv[0]))
exit(1)
action = sys.argv[1]
if action == 'restore':
res = wrap_restore()
elif action in ['dump', 'pre-dump']:
res = wrap_dump()
else:
print('Unsupported action {} for criu-ns'.format(action))
res = -1
if __name__ == "__main__":
if len(sys.argv) == 1:
show_usage()
exit(1)
sys.exit(res)
action = sys.argv[1]
if action == 'restore':
res = wrap_restore()
elif action in ['dump', 'pre-dump']:
res = wrap_dump()
else:
print('Unsupported action {} for criu-ns'.format(action))
res = -1
sys.exit(res)