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Hi Joe,
On 12/04/2013 10:40 AM, Joe MacDonald wrote:
> Hey Phil,
>
> [[meta-selinux][RFC v2] refpolicy: Add generic refpolicy recipe and make
> policy type configurable.] On 13.11.13 (Wed 20:05) Philip Tricca wrote:
>
>> This is a fix up for my previous RFC. I've cleaned up an error with some \
>> variable use. The intent remains the same:
>>
>> This RFC is a significant departure from the way the policy packages are
>> currently set up. The noteworthy differences are:
>> 1) the POLICY_TYPE variable can be set as configuration outside the policy
>> recipe
>> 2) a single refpolicy recipe can be used to build all 3 policy types
>> 3) DEFAULT_POLICY from selinux-config has been changed to be the same
>> POLICY_TYPE variable as the policy
>> 4) refpolicy depends on the config and sets the POLICY_TYPE accordingly
>>
>> This approach was taken to allow the use of a policy type beyond the default
>> MLS. I've left the other refpolicy-* recipes in tact but if this approach is
>> acceptable they could be removed if we're willing to accept the limitation
>> that only one policy may be installed on a given image. If this limitation
>> isn't acceptable then they can be left as is.
>>
>> After thinking about this a bit I've realized that the same effect can likely
>> be achieved using the virtual provider mechanism. If this approach would be
>> preferred I'm happy to whip up a prototype.
>>
>> Comments and input would be appreciated.
>
> I've been playing with this for a bit and I quite like both the idea.
> I'd like to see this taken to the logical conclusion you mention above,
> hit all the policy recipes. Meaning I think it makes the most sense to
> actually approach this as a virtual provider problem. If you're still
> willing to put together a prototype for this, I'm able to take a look at
> it in pretty short order.
I'll give it a go and see what I can come up with.
Regards,
Philip
>> Signed-off-by: Philip Tricca <fl...@twobit.us>
>> ---
>> .../packagegroups/packagegroup-selinux-minimal.bb | 3 +--
>> recipes-security/refpolicy/refpolicy_2.20130424.bb | 16
>> ++++++++++++++++
>> recipes-security/selinux/selinux-config_0.1.bb | 4 ++--
>> 3 files changed, 19 insertions(+), 4 deletions(-)
>> create mode 100644 recipes-security/refpolicy/refpolicy_2.20130424.bb
>>
>> diff --git a/recipes-security/packagegroups/packagegroup-selinux-minimal.bb
>> b/recipes-security/packagegroups/packagegroup-selinux-minimal.bb
>> index 072320d..af29da1 100644
>> --- a/recipes-security/packagegroups/packagegroup-selinux-minimal.bb
>> +++ b/recipes-security/packagegroups/packagegroup-selinux-minimal.bb
>> @@ -13,6 +13,5 @@ ALLOW_EMPTY_${PN} = "1"
>> RDEPENDS_${PN} = "\
>> policycoreutils-semodule \
>> policycoreutils-sestatus \
>> - selinux-config \
>> - refpolicy-mls \
>> + refpolicy \
>> "
>> diff --git a/recipes-security/refpolicy/refpolicy_2.20130424.bb
>> b/recipes-security/refpolicy/refpolicy_2.20130424.bb
>> new file mode 100644
>> index 0000000..f1fa2f8
>> --- /dev/null
>> +++ b/recipes-security/refpolicy/refpolicy_2.20130424.bb
>> @@ -0,0 +1,16 @@
>> +SUMMARY = "The SELinux reference policy."
>> +DESCRIPTION = "\
>> +This is the reference policy for the SELinux mandatory access control \
>> +system. There are 3 supported policy types: standard, MCS and MLS. The \
>> +standard policy is the most simple of the three providing the standard \
>> +type enforcement policy. The MCS policy adds an additional element to the \
>> +SELinux label called a category. Finally the MLS variant allows giving data
>> \
>> +labels such as \"Top Secret\" and preventing such data from leaking to \
>> +processes or files with lower classification. \
>> +"
>> +
>> +PR = "r0"
>> +POLICY_TYPE ??= "mls"
>> +RDEPENDS_${PN} = "selinux-config"
>> +
>> +include refpolicy_${PV}.inc
>> diff --git a/recipes-security/selinux/selinux-config_0.1.bb
>> b/recipes-security/selinux/selinux-config_0.1.bb
>> index 27d9995..066581e 100644
>> --- a/recipes-security/selinux/selinux-config_0.1.bb
>> +++ b/recipes-security/selinux/selinux-config_0.1.bb
>> @@ -1,4 +1,4 @@
>> -DEFAULT_POLICY = "mls"
>> +POLICY_TYPE ??= "mls"
>>
>> SUMMARY = "SELinux configuration"
>> DESCRIPTION = "\
>> @@ -45,7 +45,7 @@ SELINUX=enforcing
>> # SELINUXTYPE= can take one of these two values:
>> # standard - Standard Security protection.
>> # mls - Multi Level Security protection.
>> -SELINUXTYPE=${DEFAULT_POLICY}
>> +SELINUXTYPE=${POLICY_TYPE}
>> " > ${WORKDIR}/config
>> install -d ${D}/${sysconfdir}/selinux
>> install -m 0644 ${WORKDIR}/config ${D}/${sysconfdir}/selinux/
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