75806ef3c5
Ideally, public should only contain APIs (types / attributes) for
vendor. The other statements like allow/neverallow/typeattributes are
regarded as implementation detail for platform and should be in private.
Bug: 232023812
Test: m selinux_policy
Test: diff <(git diff --staged | grep "^-" | cut -b2- | sort) \
<(git diff --staged | grep "^+" | cut -b2- | sort)
Test: remove comments on plat_sepolicy.cil, replace base_typeattr_*
to base_typeattr and then compare old and new plat_sepolicy.cil
Change-Id: I5e7d2da4465ab0216de6bacdf03077d37f6ffe12
50 lines
1.8 KiB
Text
50 lines
1.8 KiB
Text
typeattribute mediametrics coredomain;
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init_daemon_domain(mediametrics)
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# Needed for stats callback registration to statsd.
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allow mediametrics stats_service:service_manager find;
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allow mediametrics statsmanager_service:service_manager find;
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binder_call(mediametrics, statsd)
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binder_use(mediametrics)
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binder_call(mediametrics, binderservicedomain)
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binder_service(mediametrics)
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add_service(mediametrics, mediametrics_service)
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allow mediametrics system_server:fd use;
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r_dir_file(mediametrics, cgroup)
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r_dir_file(mediametrics, cgroup_v2)
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allow mediametrics proc_meminfo:file r_file_perms;
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# allows interactions with dumpsys to GMScore
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allow mediametrics { app_data_file privapp_data_file }:file write;
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# allow access to package manager for uid->apk mapping
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allow mediametrics package_native_service:service_manager find;
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# Allow metrics service to send information to statsd socket.
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unix_socket_send(mediametrics, statsdw, statsd)
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###
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### neverallow rules
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###
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# mediametrics should never execute any executable without a
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# domain transition
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neverallow mediametrics { file_type fs_type }:file execute_no_trans;
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# The goal of the mediaserver split is to place media processing code into
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# restrictive sandboxes with limited responsibilities and thus limited
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# permissions. Example: Audioserver is only responsible for controlling audio
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# hardware and processing audio content. Cameraserver does the same for camera
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# hardware/content. Etc.
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#
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# Media processing code is inherently risky and thus should have limited
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# permissions and be isolated from the rest of the system and network.
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# Lengthier explanation here:
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# https://android-developers.googleblog.com/2016/05/hardening-media-stack.html
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neverallow mediametrics domain:{ udp_socket rawip_socket } *;
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neverallow mediametrics { domain userdebug_or_eng(`-su') }:tcp_socket *;
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