Re: [Xense-devel] [PATCH] ACM: adding C-support for policy translation and labeling support for domains

[David Palmer <dwpalmer.xense@gmail.com>]

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I'm not clear why the getssid() needs to be introduced. Isn't the problem 
better solved by introducing new object managers? With the getssid(), the 
code must know about the specific policy, making the policy less amenable to 
adjustment as problems are discovered. Wouldn't it be better for the domains 
to provide object managers? This would allow the STE policy to make 
statements about those new objects. The code can be policy neutral by 
strictly following the decisions of the security server. Wouldn't this make 
it easier to revoke policies and update them without having to change the 
code and patch?

Dave


On 8/18/05, Reiner Sailer <sailer@us.ibm.com> wrote:
> 
> 
> This patch: 
> 
> * adds a C-based security policy translation tool to Xen (secpol_xml2bin) 
> and removes the current Java 
> security policy translator (Java dependencies). The C-based tool 
> integrates into the Xen source tree build 
> and install (using gnome libxml2 for XML parsing). See install.txt. 
> 
> * introduces security labels and related tools. Users can now use 
> semantic-rich label names to put security-tags 
> on domains. See example.txt, policy.txt. 
> 
> * moves the security configuration (currently ACM_USE_SECURITY_POLICY) 
> from xen/Rules.mk 
> into a separate top-level Security.mk <http://Security.mk> file (it is 
> needed by the tools/security and xen/acm). 
> 
> Both xen/acm and tools/security are built during the Xen build process 
> only if ACM_USE_SECURITY_POLICY 
> is not ACM_NULL_POLICY (which is the default setting). 
> 
> Comments welcome! 
> 
> Note: We are currently preparing a patch that introduces a new ACM command 
> (getssid) to retrieve the security types 
> of a running domain. This command is enables domain-internal enforcement 
> functions based on the ACM security policy. 
> 
> Thanks 
> Reiner 
> 
> Signed-off-by Reiner Sailer <sailer@us.ibm.com> 
> Signed-off by Stefan Berger <stefanb@us.ibm.com> 
> Signed-off by Ray Valdez <rvaldez@us.ibm.com> 
> 
> 
> _______________________________________________
> Xense-devel mailing list
> Xense-devel@lists.xensource.com
> http://lists.xensource.com/xense-devel
> 
> 
> 
>

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