[ProFTPD-committers] [Bug 2034] Add support for a "graceful shutdown" signal

[<bug...@ho...>]

http://bugs.proftpd.org/show_bug.cgi?id=2034





------- Additional Comments From uh...@fa...  2004-05-20 09:21 -------
using signals is simple, avoids the need for mod_ctrls and in some cases can be
driven from command line too. Also, it is common practice:

SIGINT - Ctrl-C from keyboard, should stop the process
SIGQUIT - Ctrl-\ from keyboard, should forcely stop the process

SIGHUP - used in common by many daemons to do the reconfigure

- looking at this, SIGINT could be used to do soft stop (let children live),
SIGQUIT for hard stop (kill children), SIGHUP for reconfigure...

- apache uses SIGHUP for hard restart (killing children) and SIGUSR1 for soft
restart (children remain) - I think proftpd should follow this.

remaining SIGUSR2 could be used for gracefull shutdown (wait for children) - I
think you advised it in comment 2.

SIGTERM should be probably used for the same as SIGQUIT, as long as it is widely
used to tell processes to stop.




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