way to refresh crond

[David Henderson]

Good morning all!  Thanks for the response Isaac!  What I've found in
my experiences is that you actually have to restart the cron daemon
for changes to the system time to be picked up.  With that said, I'm
trying to 'refresh' cron without having to actually terminate and
restart it.  I'd rather not have to implement dirty hacks, but a
proper way of doing so.  IIRC, usually a SIGHUP sent to the process
accomplishes this task, but it doesn't appear to be the case with BB
crond.  Any further help would be appreciated!

Thanks,
Dave


On 1/25/16, Isaac Dunham <ibid.ag at gmail.com> wrote:
> On Mon, Jan 25, 2016 at 03:52:50PM -0500, David Henderson wrote:
>> Good afternoon everyone!  Still working with crond and was interested
>> in seeing if the BB crond had a way to 'refresh' it without killing it
>> and restarting so any time adjustments will be picked up.  I tried
>> doing a SIGHUP kill call, but that doesn't appear to work...  Any help
>> would be appreciated!
>
> You cannot reset the timezone in a running process without a bit of
> hackery in the source.
> (It might be possible to use ptrace()/gdb to do it somehow, but I'm
> not familiar with how, and it's certainly ugly.)
> If you reset the clock time, crond should pick up the new time, sleep
> a while if it went backwards, and continue.
>
> HTH,
> Isaac Dunham
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