[tomoyo-users-en 126] Re: Question/problem with TOMOYO from mainlinekernel

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Iustin Pop iusty****@k1024*****
Sun Jan 10 03:06:22 JST 2010


On Sat, Jan 09, 2010 at 11:24:15AM +0900, Tetsuo Handa wrote:
> > Iustin Pop wrote:
> > > Note that I didn't actually install the tools on my machine, just compiled and
> > > testing from the build directory. Do the tools need installation to fix the
> > > below problem?
> > 
> > I think /sbin/tomoyo-init (which is installed by "make install") is missing and
> > therefore TOMOYO is not yet activated. Please create /sbin/tomoyo-init by
> > "cp -p tomoyo-init /sbin/" from the build directory.
> 
> Additional info:
> 
> TOMOYO is activated when "/sbin/init is executed" && "/sbin/tomoyo-init exists".
> Thus, you need to reboot the system (or at least, execute /sbin/init) after
> creating /sbin/tomoyo-init in order to activate TOMOYO. /sbin/tomoyo-init loads
> policy from /etc/tomoyo/ directory when /sbin/init is executed.

Ah, I understand now - without /sbin/tomoyo-init, TOMOYO stays in
uninitialized mode, and I found this is my kernel dmesg:

"Not activating Mandatory Access Control now since /sbin/tomoyo-init
doesn't exist."

> Before TOMOYO is activated, all programs can modify policy via
> /sys/kernel/security/tomoyo/ interface. But after TOMOYO is activated, only
> programs or domainnames listed in /sys/kernel/security/tomoyo/manager can.
> Therefore, you will see error messages like "$domainname ( $programname ) is
> not permitted to update policies." from /bin/dmesg output.
> Please append $domainname or $programname to /etc/tomoyo/manager.conf and
> reboot the system so that /sbin/tomoyo-init copies /etc/tomoyo/manager.conf
> to /sys/kernel/security/tomoyo/manager.

Thank you for the detailed explanation. This makes sense, and I also
found out in the kernel that one can force initialization via
/sbin/tomoyo-start (after the system has booted).

Maybe it would be good to add the requirement of /sbin/tomoyo-init to
the quick-start documentation.

Thank you, I will play now more with TOMOYO!

iustin




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