You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
52 lines
1.9 KiB
52 lines
1.9 KiB
# mediaextractor - multimedia daemon |
|
type mediaextractor, domain; |
|
type mediaextractor_exec, exec_type, file_type; |
|
|
|
typeattribute mediaextractor mlstrustedsubject; |
|
|
|
binder_use(mediaextractor) |
|
binder_call(mediaextractor, binderservicedomain) |
|
binder_call(mediaextractor, appdomain) |
|
binder_service(mediaextractor) |
|
|
|
add_service(mediaextractor, mediaextractor_service) |
|
allow mediaextractor mediametrics_service:service_manager find; |
|
allow mediaextractor hidl_token_hwservice:hwservice_manager find; |
|
|
|
allow mediaextractor system_server:fd use; |
|
|
|
hal_client_domain(mediaextractor, hal_cas) |
|
|
|
r_dir_file(mediaextractor, cgroup) |
|
allow mediaextractor proc_meminfo:file r_file_perms; |
|
|
|
crash_dump_fallback(mediaextractor) |
|
|
|
# allow mediaextractor read permissions for file sources |
|
allow mediaextractor media_rw_data_file:file { getattr read }; |
|
allow mediaextractor app_data_file:file { getattr read }; |
|
|
|
# Read resources from open apk files passed over Binder |
|
allow mediaextractor apk_data_file:file { read getattr }; |
|
allow mediaextractor asec_apk_file:file { read getattr }; |
|
allow mediaextractor ringtone_file:file { read getattr }; |
|
|
|
### |
|
### neverallow rules |
|
### |
|
|
|
# mediaextractor should never execute any executable without a |
|
# domain transition |
|
neverallow mediaextractor { file_type fs_type }:file execute_no_trans; |
|
|
|
# The goal of the mediaserver split is to place media processing code into |
|
# restrictive sandboxes with limited responsibilities and thus limited |
|
# permissions. Example: Audioserver is only responsible for controlling audio |
|
# hardware and processing audio content. Cameraserver does the same for camera |
|
# hardware/content. Etc. |
|
# |
|
# Media processing code is inherently risky and thus should have limited |
|
# permissions and be isolated from the rest of the system and network. |
|
# Lengthier explanation here: |
|
# https://android-developers.googleblog.com/2016/05/hardening-media-stack.html |
|
neverallow mediaextractor domain:{ tcp_socket udp_socket rawip_socket } *;
|
|
|