platform_system_sepolicy/system_app.te
Stephen Smalley f1ea707a3d Restore system_app access to system-owned /data directories.
System UID apps want to be able to create/write to system-owned
/data directories outside of their own /data/data package directory,
such as /data/system/cache and /data/misc/keychain.  Restore access
(which was removed by Ifa10e3283b07f6bd6ecc16eceeb663edfd756cea when
system_app_data_file was introduced for the /data/data package
directories of system UID apps), but audit writes to system_data_file
so we can look at introducing separate types for these directories in
the future and ultimately remove access to the rest of the system-owned
data.

Change-Id: I573f120f23f2dd2d228aa738b31ad2cb3044ec6e
Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov>
2014-05-27 14:32:28 -04:00

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1.6 KiB
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#
# Apps that run with the system UID, e.g. com.android.system.ui,
# com.android.settings. These are not as privileged as the system
# server.
#
type system_app, domain;
permissive_or_unconfined(system_app)
app_domain(system_app)
net_domain(system_app)
binder_service(system_app)
# Read and write /data/data subdirectory.
allow system_app system_app_data_file:dir create_dir_perms;
allow system_app system_app_data_file:file create_file_perms;
# Read and write to other system-owned /data directories, such as
# /data/system/cache and /data/misc/keychain.
allow system_app system_data_file:dir create_dir_perms;
allow system_app system_data_file:file create_file_perms;
# Audit writes to these directories and files so we can identify
# and possibly move these directories into their own type in the future.
auditallow system_app system_data_file:dir { create setattr add_name remove_name rmdir rename };
auditallow system_app system_data_file:file { create setattr append write link unlink rename };
# Read wallpaper file.
allow system_app wallpaper_file:file r_file_perms;
# Write to dalvikcache.
allow system_app dalvikcache_data_file:file { write setattr };
# Write to properties
unix_socket_connect(system_app, property, init)
allow system_app debug_prop:property_service set;
allow system_app radio_prop:property_service set;
allow system_app system_prop:property_service set;
allow system_app ctl_bugreport_prop:property_service set;
# Create /data/anr/traces.txt.
allow system_app anr_data_file:dir ra_dir_perms;
allow system_app anr_data_file:file create_file_perms;
control_logd(system_app)