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How to do syslog in kernel level?
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hai@asu.edu  
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 More options Mar 14 2002, 11:40 pm
Newsgroups: comp.os.linux.development.apps
From: h...@asu.edu (h...@asu.edu)
Date: 14 Mar 2002 20:40:49 -0800
Local: Thurs, Mar 14 2002 11:40 pm
Subject: How to do syslog in kernel level?
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hi, now we are working on intercepting the "do_page_fault" interrupt
and log some information. since we are in kernel level, i think we
cannot use printf or so. so we are thinking about to adopt the system
call "syslog". could we just invoke syslog() inside the
"do_page_fault" handler? will that work? i see from the source code
that it allows interrupt by "local_irq_enable". but just want to make
sure. thanks in advance. :)

ps. also another two problem, how to get current system time and how
to do TCP/IP connection in kernel level. thanks.:)

hai


 
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Nils O. Selåsdal  
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 More options Mar 15 2002, 4:35 am
Newsgroups: comp.os.linux.development.apps
From: nosel...@frisurf.no (Nils O. Selåsdal)
Date: Fri, 15 Mar 2002 09:35:32 GMT
Local: Fri, Mar 15 2002 4:35 am
Subject: Re: How to do syslog in kernel level?
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On 14 Mar 2002 20:40:49 -0800, h...@asu.edu <h...@asu.edu> wrote:
>hi, now we are working on intercepting the "do_page_fault" interrupt
>and log some information. since we are in kernel level, i think we
>cannot use printf or so. so we are thinking about to adopt the system
>call "syslog". could we just invoke syslog() inside the
Certanly not.
>"do_page_fault" handler? will that work? i see from the source code
>that it allows interrupt by "local_irq_enable". but just want to make
>sure. thanks in advance. :)

Remember NO userspace library functions available in the kernel,
use printk(..), sysklogd takes care of sending that to syslogd

 
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hai@asu.edu  
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 More options Mar 15 2002, 1:03 pm
Newsgroups: comp.os.linux.development.apps
From: h...@asu.edu (h...@asu.edu)
Date: 15 Mar 2002 10:03:20 -0800
Local: Fri, Mar 15 2002 1:03 pm
Subject: Re: How to do syslog in kernel level?
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nosel...@frisurf.no (Nils O. Selåsdal wrote in message <news:slrna93g3a.h6g.noselasd@labsrv.utel.no>...

> On 14 Mar 2002 20:40:49 -0800, h...@asu.edu <h...@asu.edu> wrote:
> >hi, now we are working on intercepting the "do_page_fault" interrupt
> >and log some information. since we are in kernel level, i think we
> >cannot use printf or so. so we are thinking about to adopt the system
> >call "syslog". could we just invoke syslog() inside the
>  Certanly not.
> >"do_page_fault" handler? will that work? i see from the source code
> >that it allows interrupt by "local_irq_enable". but just want to make
> >sure. thanks in advance. :)
> Remember NO userspace library functions available in the kernel,
> use printk(..), sysklogd takes care of sending that to syslogd

thanks a lot.:)

 
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