platform_system_sepolicy/private/system_app.te
Mark Salyzyn d33a9a194b logd: restrict access to /dev/event-log-tags
Create an event_log_tags_file label and use it for
/dev/event-log-tags.  Only trusted system log readers are allowed
direct read access to this file, no write access.  Untrusted domain
requests lack direct access, and are thus checked for credentials via
the "plan b" long path socket to the event log tag service.

Test: gTest logd-unit-tests, liblog-unit-tests and logcat-unit-tests
Bug: 31456426
Bug: 30566487
Change-Id: Ib9b71ca225d4436d764c9bc340ff7b1c9c252a9e
2017-01-31 15:50:15 +00:00

82 lines
2.2 KiB
Text

###
### 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.
###
typeattribute system_app domain_deprecated;
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 lnk_file } create_file_perms;
# Read and write to /data/misc/user.
allow system_app misc_user_data_file:dir create_dir_perms;
allow system_app misc_user_data_file:file create_file_perms;
# Access to vold-mounted storage for measuring free space
allow system_app mnt_media_rw_file:dir search;
# Read wallpaper file.
allow system_app wallpaper_file:file r_file_perms;
# Read icon file.
allow system_app icon_file:file r_file_perms;
# Write to properties
set_prop(system_app, bluetooth_prop)
set_prop(system_app, debug_prop)
set_prop(system_app, hal_binderization_prop)
set_prop(system_app, system_prop)
set_prop(system_app, logd_prop)
set_prop(system_app, net_radio_prop)
set_prop(system_app, system_radio_prop)
set_prop(system_app, log_tag_prop)
userdebug_or_eng(`set_prop(system_app, logpersistd_logging_prop)')
auditallow system_app net_radio_prop:property_service set;
auditallow system_app system_radio_prop:property_service set;
# ctl interface
set_prop(system_app, ctl_default_prop)
set_prop(system_app, ctl_bugreport_prop)
# 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;
# Settings need to access app name and icon from asec
allow system_app asec_apk_file:file r_file_perms;
allow system_app servicemanager:service_manager list;
# TODO: scope this down? Too broad?
allow system_app { service_manager_type -netd_service -dumpstate_service -installd_service }:service_manager find;
allow system_app keystore:keystore_key {
get_state
get
insert
delete
exist
list
reset
password
lock
unlock
is_empty
sign
verify
grant
duplicate
clear_uid
user_changed
};
# /sys access
r_dir_file(system_app, sysfs_type)
control_logd(system_app)
read_runtime_log_tags(system_app)