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[Xen-devel] [PATCH 05/15] flask/policy: xenstore stubdom policy


  • To: xen-devel@xxxxxxxxxxxxx
  • From: Daniel De Graaf <dgdegra@xxxxxxxxxxxxx>
  • Date: Thu, 9 Jun 2016 10:47:08 -0400
  • Cc: Daniel De Graaf <dgdegra@xxxxxxxxxxxxx>
  • Delivery-date: Thu, 09 Jun 2016 14:47:35 +0000
  • Ironport-phdr: 9a23:NMlHrxX9c9+Oeu0QB/lW1ROgebrV8LGtZVwlr6E/grcLSJyIuqrYZhKGt8tkgFKBZ4jH8fUM07OQ6PCxHzNdqsnb+Fk5M7VyFDY9wf0MmAIhBMPXQWbaF9XNKxIAIcJZSVV+9Gu6O0UGUOz3ZlnVv2HgpWVKQka3CwN5K6zPF5LIiIzvjqbpq8yVPFgD22D1SIgxBSv1hD2ZjtMRj4pmJ/R54TryiVwMRd5rw3h1L0mYhRf265T41pdi9yNNp6BprJYYAu3HZaBwcZh0RHRjaTh0t4XXskzTQA3K6nYCX2E+lhtTHxOD/Bz8GJDrvXjUrO14jQWTO8z7SfgYVHyN9a5iRle8hCgLOjEj+UnLm8dwi+RduxvnqBthld2HKLqJPeZzK/uONegRQnBMC4MLDyE=
  • List-id: Xen developer discussion <xen-devel.lists.xen.org>

This adds the xenstore_t type to the example policy for use by a
xenstore stub domain.

Signed-off-by: Daniel De Graaf <dgdegra@xxxxxxxxxxxxx>
---
 tools/flask/policy/modules/modules.conf |  3 +++
 tools/flask/policy/modules/xenstore.te  | 24 ++++++++++++++++++++++++
 2 files changed, 27 insertions(+)
 create mode 100644 tools/flask/policy/modules/xenstore.te

diff --git a/tools/flask/policy/modules/modules.conf 
b/tools/flask/policy/modules/modules.conf
index 9aac6a0..dd10884 100644
--- a/tools/flask/policy/modules/modules.conf
+++ b/tools/flask/policy/modules/modules.conf
@@ -33,6 +33,9 @@ nomigrate = on
 # Example device policy.  Also see policy/device_contexts.
 nic_dev = on
 
+# Xenstore stub domain.
+xenstore = on
+
 # This allows any domain type to be created using the system_r role.  When it 
is
 # disabled, domains not using the default types (dom0_t, domU_t, dm_dom_t) must
 # use another role (such as vm_r from the vm_role module below).
diff --git a/tools/flask/policy/modules/xenstore.te 
b/tools/flask/policy/modules/xenstore.te
new file mode 100644
index 0000000..519566a
--- /dev/null
+++ b/tools/flask/policy/modules/xenstore.te
@@ -0,0 +1,24 @@
+################################################################################
+#
+# Xenstore stubdomain
+#
+################################################################################
+declare_singleton_domain(xenstore_t)
+create_domain(dom0_t, xenstore_t)
+manage_domain(dom0_t, xenstore_t)
+
+# Xenstore requires the global VIRQ for domain destroy operations
+allow dom0_t xenstore_t:domain set_virq_handler;
+# Current xenstore stubdom uses the hypervisor console, not "xl console"
+allow xenstore_t xen_t:xen writeconsole;
+# Xenstore queries domaininfo on all domains
+allow xenstore_t domain_type:domain getdomaininfo;
+
+# As a shortcut, the following 3 rules are used instead of adding a 
domain_comms
+# rule between xenstore_t and every domain type that talks to xenstore
+create_channel(xenstore_t, domain_type, xenstore_t_channel)
+allow event_type xenstore_t: event bind;
+allow xenstore_t domain_type:grant { map_read map_write unmap };
+
+# Xenstore is a utility domain, so it should use the system role
+role system_r types xenstore_t;
-- 
2.5.5


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