commit 4a539441d844f85fd899862078b4c27641c1b606
author Jeff Sharkey <jsharkey@android.com> Fri Jan 05 17:09:52 2018 -0700
committer Jeff Sharkey <jsharkey@android.com> Sun Jan 07 19:40:29 2018 -0700
tree b0a849cc161ed072e799982a117cb053142e9837
parent 61823f3a23750d672947ba7b5bb6dd4f1ff5503f

Start using new reserved disk GID.

We recently created a new GID that can be granted to critical system
processes, so that the system is usable enough for the user to free
up disk space used by abusive apps.

Define a permission for the GID so we can grant it to system apps,
and add the GID to core apps needed for system stability.  (The list
was mostly derived from filling a disk and seeing what caused the
device to fall over.)

Test: builds, boots
Bug: 62024591
Change-Id: Icdf471ed3bed4eeb8c01f1d39f0b40c1ea098396

data/etc/platform.xml

diff --git a/data/etc/platform.xml b/data/etc/platform.xml
index 1affba0..d2c855b 100644
--- a/data/etc/platform.xml
+++ b/data/etc/platform.xml
@@ -112,6 +112,10 @@
         <group gid="media" />
     </permission>
 
+    <permission name="android.permission.USE_RESERVED_DISK">
+        <group gid="reserved_disk" />
+    </permission>
+
     <!-- These are permissions that were mapped to gids but we need
          to keep them here until an upgrade from L to the current
          version is to be supported. These permissions are built-in

data/etc/privapp-permissions-platform.xml

diff --git a/data/etc/privapp-permissions-platform.xml b/data/etc/privapp-permissions-platform.xml
index 7bb2859..4732bec 100644
--- a/data/etc/privapp-permissions-platform.xml
+++ b/data/etc/privapp-permissions-platform.xml
@@ -136,6 +136,7 @@
         <permission name="android.permission.MANAGE_USERS"/>
         <permission name="android.permission.OBSERVE_GRANT_REVOKE_PERMISSIONS"/>
         <permission name="android.permission.UPDATE_APP_OPS_STATS"/>
+        <permission name="android.permission.USE_RESERVED_DISK"/>
     </privapp-permissions>
 
     <privapp-permissions package="com.android.phone">
@@ -181,6 +182,7 @@
     <privapp-permissions package="com.android.providers.calendar">
         <permission name="android.permission.GET_ACCOUNTS_PRIVILEGED"/>
         <permission name="android.permission.UPDATE_APP_OPS_STATS"/>
+        <permission name="android.permission.USE_RESERVED_DISK"/>
     </privapp-permissions>
 
     <privapp-permissions package="com.android.providers.contacts">
@@ -189,6 +191,7 @@
         <permission name="android.permission.INTERACT_ACROSS_USERS"/>
         <permission name="android.permission.MANAGE_USERS"/>
         <permission name="android.permission.UPDATE_APP_OPS_STATS"/>
+        <permission name="android.permission.USE_RESERVED_DISK"/>
     </privapp-permissions>
 
     <privapp-permissions package="com.android.providers.downloads">
@@ -203,12 +206,14 @@
         <permission name="android.permission.ACCESS_MTP"/>
         <permission name="android.permission.INTERACT_ACROSS_USERS"/>
         <permission name="android.permission.MANAGE_USERS"/>
+        <permission name="android.permission.USE_RESERVED_DISK"/>
         <permission name="android.permission.WRITE_MEDIA_STORAGE"/>
     </privapp-permissions>
 
     <privapp-permissions package="com.android.providers.telephony">
         <permission name="android.permission.INTERACT_ACROSS_USERS"/>
         <permission name="android.permission.MODIFY_PHONE_STATE"/>
+        <permission name="android.permission.USE_RESERVED_DISK"/>
     </privapp-permissions>
 
     <privapp-permissions package="com.android.provision">
@@ -253,6 +258,7 @@
         <permission name="android.permission.SET_TIME"/>
         <permission name="android.permission.STATUS_BAR"/>
         <permission name="android.permission.TETHER_PRIVILEGED"/>
+        <permission name="android.permission.USE_RESERVED_DISK"/>
         <permission name="android.permission.USER_ACTIVITY"/>
         <permission name="android.permission.WRITE_APN_SETTINGS"/>
         <permission name="android.permission.WRITE_MEDIA_STORAGE"/>
@@ -316,6 +322,7 @@
         <permission name="android.permission.STOP_APP_SWITCHES"/>
         <permission name="android.permission.SUBSTITUTE_NOTIFICATION_APP_NAME"/>
         <permission name="android.permission.UPDATE_APP_OPS_STATS"/>
+        <permission name="android.permission.USE_RESERVED_DISK"/>
         <permission name="android.permission.WRITE_MEDIA_STORAGE"/>
         <permission name="android.permission.WRITE_SECURE_SETTINGS"/>
     </privapp-permissions>
@@ -329,6 +336,7 @@
         <permission name="android.permission.INTERACT_ACROSS_USERS"/>
         <permission name="android.permission.MANAGE_USERS"/>
         <permission name="android.permission.PACKAGE_USAGE_STATS"/>
+        <permission name="android.permission.USE_RESERVED_DISK"/>
         <permission name="android.permission.WRITE_SECURE_SETTINGS"/>
     </privapp-permissions>
 
@@ -365,6 +373,7 @@
         <permission name="android.permission.SUBSTITUTE_NOTIFICATION_APP_NAME"/>
         <permission name="android.permission.TETHER_PRIVILEGED"/>
         <permission name="android.permission.UPDATE_APP_OPS_STATS"/>
+        <permission name="android.permission.USE_RESERVED_DISK"/>
         <permission name="android.permission.WRITE_DREAM_STATE"/>
         <permission name="android.permission.WRITE_MEDIA_STORAGE"/>
         <permission name="android.permission.WRITE_SECURE_SETTINGS"/>