Allow recovery to create device nodes and modify rootfs
tilapia's OTA code for updating the radio image needs to
create files on rootfs and create a character device in /dev.
Add an exception for recovery the the various neverallow rules
blocking this behavior.
Bug: 18281224
Change-Id: I5c57afe0a10b4598fea17f9c5c833bd39551907e
diff --git a/domain.te b/domain.te
index 6b025e3..cb1c4f3 100644
--- a/domain.te
+++ b/domain.te
@@ -255,7 +255,7 @@
# Don't allow raw read/write/open access to generic devices.
# Rather force a relabel to a more specific type.
# ueventd is exempt from this, as its managing these devices.
-neverallow { domain -unconfineddomain -ueventd } device:chr_file { open read write };
+neverallow { domain -unconfineddomain -ueventd -recovery } device:chr_file { open read write };
# Limit what domains can mount filesystems or change their mount flags.
# sdcard_type / vfat is exempt as a larger set of domains need
@@ -290,7 +290,7 @@
{ create write setattr relabelfrom relabelto append unlink link rename };
# Nothing should be writing to files in the rootfs.
-neverallow domain rootfs:file { create write setattr relabelto append unlink link rename };
+neverallow { domain -recovery } rootfs:file { create write setattr relabelto append unlink link rename };
# Restrict context mounts to specific types marked with
# the contextmount_type attribute.
