platform_system_sepolicy/private/viewcompiler.te

# viewcompiler
type viewcompiler, domain, coredomain, mlstrustedsubject;
type viewcompiler_exec, system_file_type, exec_type, file_type;
type viewcompiler_tmpfs, file_type;

# Reading an APK opens a ZipArchive, which unpack to tmpfs.
# Use tmpfs_domain() which will give tmpfs files created by viewcompiler their
# own label, which differs from other labels created by other processes.
# This allows to distinguish in policy files created by viewcompiler vs other
# processes.
tmpfs_domain(viewcompiler)

allow viewcompiler installd:fd use;

# Include write permission for app data files so viewcompiler can generate
# compiled layout dex files
allow viewcompiler app_data_file:file { getattr write };

# Allow the view compiler to read resources from the apps APK.
allow viewcompiler apk_data_file:file read;

# priv-apps are moving to a world where they can only execute
# signed code. Make sure viewcompiler never can write to privapp
# directories to avoid introducing unsigned executable code
neverallow viewcompiler privapp_data_file:file no_w_file_perms;