Feature Request

[vecna@s0ftpj.org]

On Mon, Jul 09, 2001 at 08:01:35PM -0400, Brad Chapman wrote:
~ Mr. Vallimar,
~ 
~    This would be a nice feature, but unfortunately, it wouldn't be possible
~ with the vanilla IPv4/IPv6 LOG target, which uses kernel printk()'s. 
on printk you can set kernel log level but this cannot be use for various
kind of logging, because any macro KERN_* is referred to certain situation.

but whit a simple kernel hack netfilter module can call sys_syslog, the 
system call used by userspace function syslog(3).

the log priority is simple put by the first 3/4 byte of buffer, eg:
<1> Jul 10 10:51:55 claudio last message repeated 11 times
or
<12> blablabla ...

and the selection on /etc/syslog.conf is related to the number contain between
"<" and ">"

the problem can be that syslog has not symbol exporteb, but for call from
your kernel module you can simple read kernel address form System.map file
and assig it to a function pointer with some declaration of original
sys_syslog (~linux/kernel/printk.c) (call directly do_syslogd is better)

(System.map must be up to date at running kernel and is simple read kernel 
address from netfilter module on initalization phase or with other way ..)

bye,
vecna