Messages in this thread | | | Subject | Re: [TOMOYO 14/15] Conditional permission support. | From | Tetsuo Handa <> | Date | Sun, 26 Aug 2007 11:13:48 +0900 |
| |
Hello.
Pavel Machek wrote: > What is that? Language parser in kernel?
Yes. This is a policy parser in kernel.
TOMOYO Linux' policy is passed from/to the kernel as a plain text (i.e. ASCII printable) file via /proc/tomoyo interface.
For example, to add a permission to allow /usr/sbin/sshd to execute /bin/bash if the authenticated user's uid = 500, the administrator runs
# /bin/cat > /proc/tomoyo/domain_policy << EOF select <kernel> /usr/sbin/sshd 1 /bin/bash if task.uid=500 EOF
and to remove this permission, the administrator runs
# /bin/cat > /proc/tomoyo/domain_policy << EOF select <kernel> /usr/sbin/sshd delete 1 /bin/bash if task.uid=500 EOF
The patch [TOMOYO 14/15] handles "if task.uid=500" part.
No compilation at userspace and only difference between old and new policy is written. This is similar to LDAP manipulation using LDIF format.
(To be exact, only programs that are registered in /proc/tomoyo/manager can modify policy via /proc/tomoyo interface. You need to use /usr/lib/ccs/loadpolicy or something instead of /bin/cat .) - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |