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tools: hv: introduce -n/--no-daemon option
All tools/hv daemons do mandatory daemon() on startup. However, no pidfile is created, this make it difficult for an init system to track such daemons. Modern linux distros use systemd as their init system. It can handle the daemonizing by itself, however, it requires a daemon to stay in foreground for that. Some distros already carry distro-specific patch for hv tools which switches off daemon(). Introduce -n/--no-daemon option for all 3 daemons in hv/tools. Parse options with getopt() to make this part easily expandable. Signed-off-by: Vitaly Kuznetsov <[email protected]> Signed-off-by: K. Y. Srinivasan <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]>
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