Re: Object Classes and kernel
The names of objects, types and other things in policy are simply
opaque string identifiers; they hold no intrinsic meaning. It is
their usage in object managers and in the policy configuration itself
that gives them meaning. The object class for directories could very
well have been named "foo"; object managers would simply then use this
string (or its integer constant equivalent) when referring to
directories in interaction with the security server.
For more information, please refer to "Configuring the SELinux
Policy," at http://www.nsa.gov/research/_files/selinux/papers/policy2/x109.shtml.
The page pointed to by that URL contains an explanation TE types and
their lack of implicit meaning, being defined only through their
usage.
Thanks,David
On Thu, Nov 3, 2011 at 8:30 AM, Artur Szymczak <artur(a)nadzieja.pl> wrote:
Hi,
how can kernel distinguishes objects in system and object in policy? I
mean. How kernel know, that this allow rule is correct to /etc/passwd
and not correct for /etc itself (as dir):
allow httpd_t etc_t : file { ioctl read getattr lock open } ;
Ok, it is written in policy, that it is a file, but it is only a object
class. Is it defined somewher, that object class 'file' is file, and
object class 'dir' is directory?
How can I create new object class named foo, which will be usedd for
named_pipe?
Regards
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