linux-kernel - Re: what is the rationale for "TAINT

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Date:	Fri, 12 Oct 2007 14:30:36 +0200
From:	Nadia Derbey <Nadia.Derbey@...l.net>
To:	"Robert P. J. Day" <rpjday@...dspring.com>
Cc:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: what is the rationale for "TAINT_USER"?

Robert P. J. Day wrote:
>   i can see what the theoretical purpose for it is here:
> 
> http://kerneltrap.org/node/6656
> 
> but it's not clear how it can possibly be set from userland given
> that:
> 
> $ grep -r TAINT_USER *
> include/linux/kernel.h:#define TAINT_USER                       (1<<6)
> kernel/panic.c:                 tainted & TAINT_USER ? 'U' : ' ',
> $
> 
>   am i missing something screamingly obvious?
> 
> rday

#ifdef CONFIG_PROC_SYSCTL
         {
                 .ctl_name       = KERN_TAINTED,
                 .procname       = "tainted",
                 .data           = &tainted,
                 .maxlen         = sizeof(int),
                 .mode           = 0644,
                 .proc_handler   = &proc_dointvec_taint,
         },
#endif


Regards,
Nadia
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