Add SEPolicy domain for cavalry app

AVC error logs: https://paste.googleplex.com/4870439005847552
Test: make selinux_policy, flash build and test
Bug: 329276535
Change-Id: I2ccb4d9205125f02f12cc26ea9e6e6e40b8d6ba2

pixelsupport/pixelsupport.mk

@@ -0,0 +1,5 @@
+PRODUCT_PACKAGES += PixelSupportPrebuilt
+
+BOARD_VENDOR_SEPOLICY_DIRS += device/google/gs-common/pixelsupport/sepolicy/vendor
+PRODUCT_PUBLIC_SEPOLICY_DIRS += device/google/gs-common/pixelsupport/sepolicy/product/public
+PRODUCT_PRIVATE_SEPOLICY_DIRS += device/google/gs-common/pixelsupport/sepolicy/product/private

pixelsupport/sepolicy/product/private/certs/pixelsupport.x509.pem

@@ -0,0 +1,30 @@
+-----BEGIN CERTIFICATE-----
+MIIGBzCCA++gAwIBAgIVAJriiL3+mR75mIC8e0Xqoz59LduNMA0GCSqGSIb3DQEBCwUAMIGSMQsw
+CQYDVQQGEwJVUzETMBEGA1UECBMKQ2FsaWZvcm5pYTEWMBQGA1UEBxMNTW91bnRhaW4gVmlldzEU
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+q3bvQEBwOsA=
+-----END CERTIFICATE-----

pixelsupport/sepolicy/product/private/keys.conf

@@ -0,0 +1,2 @@
+[@PIXELSUPPORT]
+ALL : device/google/gs-common/pixelsupport/sepolicy/product/private/certs/pixelsupport.x509.pem

pixelsupport/sepolicy/product/private/mac_permissions.xml

@@ -0,0 +1,27 @@
+<?xml version="1.0" encoding="utf-8"?>
+<policy>
+
+<!--
+
+    * A signature is a hex encoded X.509 certificate or a tag defined in
+      keys.conf and is required for each signer tag.
+    * A signer tag may contain a seinfo tag and multiple package stanzas.
+    * A default tag is allowed that can contain policy for all apps not signed with a
+      previously listed cert. It may not contain any inner package stanzas.
+    * Each signer/default/package tag is allowed to contain one seinfo tag. This tag
+      represents additional info that each app can use in setting a SELinux security
+      context on the eventual process.
+    * When a package is installed the following logic is used to determine what seinfo
+      value, if any, is assigned.
+      - All signatures used to sign the app are checked first.
+      - If a signer stanza has inner package stanzas, those stanza will be checked
+        to try and match the package name of the app. If the package name matches
+        then that seinfo tag is used. If no inner package matches then the outer
+        seinfo tag is assigned.
+      - The default tag is consulted last if needed.
+-->
+    <!-- PixelSupport app key -->
+    <signer signature="@PIXELSUPPORT" >
+      <seinfo value="PixelSupport" />
+    </signer>
+</policy>

pixelsupport/sepolicy/product/private/pixelsupport_app.te

@@ -0,0 +1,11 @@
+typeattribute pixelsupport_app coredomain;
+
+app_domain(pixelsupport_app)
+# Access the network.
+net_domain(pixelsupport_app)
+# Access bluetooth.
+bluetooth_domain(pixelsupport_app)
+
+allow pixelsupport_app app_api_service:service_manager find;
+allow pixelsupport_app radio_service:service_manager find;
+

pixelsupport/sepolicy/product/private/seapp_contexts

@@ -0,0 +1,2 @@
+# Pixel Support App
+user=_app seinfo=PixelSupport name=com.google.android.apps.pixel.support domain=pixelsupport_app type=app_data_file isPrivApp=true levelFrom=user

pixelsupport/sepolicy/product/public/pixelsupport_app.te

@@ -0,0 +1,2 @@
+type pixelsupport_app, domain;
+

pixelsupport/sepolicy/vendor/pixelsupport_app.te

@@ -0,0 +1,2 @@
+set_prop(pixelsupport_app, vendor_gti_prop)
+