Adds per-app categories to untrusted app domains and their
app data types. Per-app categories are in addition to the
existing per-user categories.

Apps targeting sdk version 28+ will now have the following
characteristics:
Domain: u:r:untrusted_app:s0:c[0-9]+,c[0-9]+,c[0-9],c[0-9]
Data context: u:object_r:app_data_file:s0:c[0-9]+,c[0-9]+,c[0-9],c[0-9]

Whereas apps targeting 27- will look like:
Domain: u:r:untrusted_app_27:s0:c[0-9]+,c[0-9]+
Data context: u:object_r:app_data_file:s0:c[0-9]+,c[0-9]+

To ensure backwards compatibility with previous SDK versions,
the levelFrom=all now enforces categories by dominance instead of
equality. Apps with per-app and per-user categories will continue
to have selinux permissions (but not necessarily unix permissions)
to access app data with only per-user categories, but apps with only
per-user categories will not be able to access the data of apps with
both per-app and per-user categories.

Bug: 63897054
Test: Boot sailfish, run apps, verify no new selinux denials.
Test: cts-tradefed run cts -m CtsSelinuxTargetSdkCurrentTestCases
Test: cts-tradefed run cts -m CtsSelinuxTargetSdk27TestCases
Test: cts-tradefed run cts -m CtsSelinuxTargetSdk25TestCases
Test: adb sideload an OTA and verify that files are correctly labeled.
Change-Id: I64b013874fe87b55f47e817a1279e76ecf86b7c0

This gives the privilege to system apps, platform apps,
ephemeral apps, and privileged apps to receive a
UDP socket from the system server. This is being added
for supporting UDP Encapsulation sockets for IPsec, which
must be provided by the system.

This is an analogous change to a previous change that
permitted these sockets for untrusted_apps:
0f75a62e

Bug: 70389346
Test: IpSecManagerTest, System app verified with SL4A
Change-Id: Iec07e97012e0eab92a95fae9818f80f183325c31

Perfetto is a performance instrumentation and logging framework,
living in AOSP's /external/pefetto.
Perfetto introduces in the system one binary and two daemons
(the binary can specialize in either depending on the cmdline).

1) traced: unprivileged daemon. This is architecturally similar to logd.
   It exposes two UNIX sockets:
   - /dev/socket/traced_producer : world-accessible, allows to stream
     tracing data. A tmpfs file descriptor is sent via SCM_RIGHTS
     from traced to each client process, which needs to be able to
     mmap it R/W (but not X)
   - /dev/socket/traced_consumer : privilege-accessible (only from:
     shell, statsd). It allows to configure tracing and read the trace
     buffer.
2) traced_probes: privileged daemon. This needs to:
   - access tracingfs (/d/tracing) to turn tracing on and off.
   - exec atrace
   - connect to traced_producer to stream data to traced.

init.rc file:
https://android-review.googlesource.com/c/platform/external/perfetto/+/575382/14/perfetto.rc

Bug: 70942310
Change-Id: Ia3b5fdacbd5a8e6e23b82f1d6fabfa07e4abc405

Vendor apps may only use servicemanager provided services
marked as app_api_service. surfaceflinger_service should be
available to vendor apps, so add this attribute and clean up
duplicate grants.

Addresses:
avc:  denied  { find } scontext=u:r:qtelephony:s0
tcontext=u:object_r:surfaceflinger_service:s0 tclass=service_manager
avc:  denied  { find } scontext=u:r:ssr_detector:s0
tcontext=u:object_r:surfaceflinger_service:s0 tclass=service_manager
avc:  denied  { find } scontext=u:r:qcneservice:s0
tcontext=u:object_r:surfaceflinger_service:s0 tclass=service_manager

Bug: 69064190
Test: build
Change-Id: I00fcf43b0a8bde232709aac1040a5d7f4792fa0f

Bug: 37916906
Test: Builds 'n' boots.
Change-Id: Ia1d86264446ebecc1ca79f32f11354921bc77668
Merged-In: I208ec6a864127a059fb389417a9c6b259d7474cb

Bug: 37281396
Test: cts-tradefed run cts-dev -m CtsContentTestCases --test=android.content.pm.cts.InstallSessionTransferTest
Change-Id: If2094057d1acfbbf007ae108225decd9ad70e459

bug: 22804304

Change-Id: I7162905d698943d127aa52804396e4765498d028

The typical use case is where vendor apps which run as untrusted apps
use libraries that are packaged withing the apk

Bug: 37753883
Test: Tested by runnig pre-installed app that packages a library from
      /vendor/app

Change-Id: I445144e37e49e531f4f43b13f34d6f2e78d7a3cf
Signed-off-by: Sandeep Patil <sspatil@google.com>

Rules defined in utrusted_app_all do not apply to all untrusted apps,
update the comments to reflect that.

Test: builds
Change-Id: I6f064bd93c13d8341128d941be34fdfaa0bec5da

Test: denials go away
Change-Id: I103cf3ad8d86b461bcba8edce02f6202fd2bcbe8

Untrusted apps should only access /data/preloads/media and demo directory.

Bug: 36197686
Test: Verified retail mode.
      Checked non-privileged APK cannot access /data/preloads
Change-Id: I8e9c21ff6aba799aa31bf06893cdf60dafc04446

We need more time to investigate the effect that this change will
have on DRM solutions. Until the investigation is done, revert.

This reverts commit 38d3eca0.

Bug: 30146890
Bug: 20013628
Bug: 35323421
Change-Id: I5ad69ef5ee12081ce7fc0a8440712f7f8f77cf16
Test: policy compiles.

Drop support for execmod (aka text relocations) for newer API versions.
Retain it for older app APIs versions.

Bug: 30146890
Bug: 20013628
Bug: 35323421
Test: policy compiles.
Change-Id: Ie54fdb385e9c4bb997ad6fcb6cff74f7e32927bb

This should only be granted to legacy apps, not to newer API versions.

Change-Id: Ia4b9b3a3cf33aa31bcad2fe15d8470c50132e2a9
Test: policy compiles.

Also allow media.extractor to use media.cas for descrambling.

bug: 22804304

Change-Id: Id283b31badecb11011211a776ba9ff5167a9019d

Bug: 35632346
Test: build and boot aosp_marlin
Change-Id: Ia2d019b0160e9b512f3e3a70ded70504fe4fea0c

Motivation:
Provide the ability to phase in new security policies by
applying them to apps with a minimum targetSdkVersion.

Place untrusted apps with targetSdkVersion<=25 into the
untrustd_app_25 domain. Apps with targetSdkVersion>=26 are placed
into the untrusted_app domain. Common rules are included in the
untrusted_app_all attribute. Apps with a more recent targetSdkVersion
are granted fewer permissions.

Test: Marlin builds and boots. Apps targeting targetSdkVersion<=25
run in untrusted_app_25 domain. Apps targeting the current development
build >=26 run in the untrusted_app domain with fewer permissions. No
new denials observed during testing.
Bug: 34115651
Bug: 35323421
Change-Id: Ie6a015566fac07c44ea06c963c40793fcdc9a083