Add microdroid specific sepolicy
Microdroid will have a separate sepolicy, apart from the core policy.
This is the first step; For now it's a simple copy of system/sepolicy.
For the future work, it will be stripped.
Bug: 189165759
Test: boot microdroid and see selinux enforced
Change-Id: I2fee39f7231560b49c93bd5e8d0feeffada40938
diff --git a/microdroid/sepolicy/system/private/crosvm.te b/microdroid/sepolicy/system/private/crosvm.te
new file mode 100644
index 0000000..f7729fd
--- /dev/null
+++ b/microdroid/sepolicy/system/private/crosvm.te
@@ -0,0 +1,16 @@
+type crosvm, domain, coredomain;
+type crosvm_exec, system_file_type, exec_type, file_type;
+type crosvm_tmpfs, file_type;
+
+# Let crosvm create temporary files.
+tmpfs_domain(crosvm)
+
+# Let crosvm receive file descriptors from VirtualizationService.
+allow crosvm virtualizationservice:fd use;
+
+# Let crosvm open /dev/kvm.
+allow crosvm kvm_device:chr_file rw_file_perms;
+
+# Most other domains shouldn't access /dev/kvm.
+neverallow { domain -crosvm -ueventd -shell } kvm_device:chr_file getattr;
+neverallow { domain -crosvm -ueventd } kvm_device:chr_file ~getattr;