why does syslogd consult /var/run/loglevel?
Denys Vlasenko
vda.linux at googlemail.com
Wed Aug 20 22:04:33 UTC 2008
On Wednesday 20 August 2008 23:15, Robert P. J. Day wrote:
>
> a colleague showed me an embedded system he was working on that is
> based on busybox-1.1.3, and was wondering why he wasn't getting his
> DEBUG-level messages logged to /var/log/messages. while i was getting
> ready to explain stuff like /proc/sys/kernel/printk to him, he got an
> email from one of his co-workers telling him to:
>
> echo "7" > /var/run/loglevel
> killall HUP syslogd
>
> or something to that effect. and it worked.
>
> huh? where exactly does syslogd consult /var/run/loglevel?
I don't see it anywhere in the source.
> i
> downloaded the source and poked around, and i don't see any reference
> to that file. am i just being dense? why did that work? thanks.
Maybe /var/run/loglevel is a symlink to /proc/sys/kernel/printk
or some such?
--
vda
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