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The feature of SPDL is hiding labels, and reducing number of
permissions.
- Hiding labels
SPDL does not use types to configure access control. You can use
file name and port number to configure.
- Reduce number of permissions
There are too many permissions in SELinux, so SPDL reduces number
of permissions by removing permissions and integrating
permissions.
Permissions that does not have security impact is
removed. Permission removal is implemented by allowing that
permission to all domains. Integrating permission means, treating
set of permissions as one permission. For example r permission
for file integrates SELinux permissions related to file read.
For detail of what kind of permissions are removed, integrated see Integrated/unsupported permissions in Simplified Policy in
http://seedit.sourceforge.net/doc/permission_integrate/.
2006-07-05