tobias/docker-offlineimap
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Make SIGHUP singal handler equivalent to SIGTERM and SIGINT.

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offlineimap has several frontends that encourage running it from a
terminal under an X session. When X session closes for a system
shutdown, the terminals exit, after sending SIGHUP to their children.

Previously SIGHUP was treated to be equivalent to SIGUSR1, i.e. wake
up and sync all accounts. This causes delays during shutdown.

According to Wikipedia [0], SIGHUP has been repurposed from a
historical meaning to one of:
 * re-read configuration files, or reinitialize (e.g. Apache, sendmail)
 * controlling pseudo or virtual terminal has been closed

I believe second meaning is more appropriate for offlineimap, and
hence this patch makes SIGHUP to be handled in the same way SIGTERM
and SIGINT are handled.

[0] http://en.wikipedia.org/wiki/SIGHUP

Debian-Bug: http://bugs.debian.org/670120
Reported-By: Steve Langasek <steve.langasek@canonical.com>
Signed-off-by: Dmitrijs Ledkovs <xnox@debian.org>
Signed-off-by: Eygene Ryabinkin <rea@codelabs.ru>
This commit is contained in:
Dmitrijs Ledkovs
2012-06-05 03:47:15 +01:00
committed by Eygene Ryabinkin
parent caef9a72fc
commit 83e8fca2e0
3 changed files with 13 additions and 3 deletions
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4
offlineimap/init.py
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@ -329,14 +329,14 @@ class OfflineImap:
syncaccounts.append(account)
def sig_handler(sig, frame):
if sig == signal.SIGUSR1 or sig == signal.SIGHUP:
if sig == signal.SIGUSR1:
# tell each account to stop sleeping
accounts.Account.set_abort_event(self.config, 1)
elif sig == signal.SIGUSR2:
# tell each account to stop looping
getglobalui().warn("Terminating after this sync...")
accounts.Account.set_abort_event(self.config, 2)
elif sig == signal.SIGTERM or sig == signal.SIGINT:
elif sig in (signal.SIGTERM, signal.SIGINT, signal.SIGHUP):
# tell each account to ABORT ASAP (ctrl-c)
getglobalui().warn("Terminating NOW (this may "\
"take a few seconds)...")