Hi Ramon,
Only root can insert and remove modules and this is done via insmod and rmmod.
You can give everyone access to insmod and rmmod by typing as root
chmod 4550 /sbin/insmod /sbin/rmmod
They should end up looking like this:
-r-sr-x--- 1 root root 28244 Apr 19 22:46 /sbin/insmod
-r-sr-x--- 1 root root 8392 Apr 19 22:46 /sbin/rmmod
This will now let users in the "root" group to insert and remove modules
in kernel memory. The 's' flag means that when insmod or rmmod is run,
the owner of the file (root) will be who the binary is effectively run as.
Naturally, there are huge security implications by doing this but given
that you're giving students access to kernel memory, I don't see that
it matters!
Brendan
> Hi,
>
> I'm an assistant professor developing a couple
> of real time exercises under RTL. Which users
> can use insmod ?
>
> Is is necessary to be the root ? (these introduces
> several difficulties to me, because everybody needs
> to know the root's passwd)
>
> Is there any other possibility ?
> Can members of the root's group use insmod (I didn't
> succeed to do it ?).
>
>
> Best Regards,
>
> Ramon
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