Vendor and system components are only allowed to share files by
passing open FDs over HIDL. Ban all directory access and all file
accesses other than what can be applied to an open file:
stat/read/write/append.
This commit marks core data types as core_data_file_type and bans
access to non-core domains with an exemption for apps. A temporary
exemption is also granted to domains that currently rely on
access with TODOs and bug number for each exemption.
Bug: 34980020
Test: Build and boot Marlin. Make phone call, watch youtube video.
No new denials observed.
Change-Id: I320dd30f9f0a5bf2f9bb218776b4bccdb529b197
On PRODUCT_FULL_TREBLE devices, non-vendor domains (coredomain) and
vendor domain are not permitted to connect to each other's sockets.
There are two main exceptions: (1) apps are permitted to talk to other
apps over Unix domain sockets (this is public API in Android
framework), and (2) domains with network access (netdomain) are
permitted to connect to netd.
This commit thus:
* adds neverallow rules restricting socket connection establishment,
* temporarily exempts the domains which are currently violating this
rule from this restriction. These domains are grouped using the new
"socket_between_core_and_vendor_violators" attribute. The attribute
is needed because the types corresponding to violators are not
exposed to the public policy where the neverallow rules are.
Test: mmm system/sepolicy
Bug: 36613996
Change-Id: I458f5a09a964b06ad2bddb52538ec3a15758b003
This adds mediacodec to the list of temporary exemptions from the "no
Binder in vendor" rule.
Test: mmm system/sepolicy
Bug: 35870313
Change-Id: I0f00d4bfb90d6da45ae2fed65864bb8fb0a4e78e
This change associates all domains which are clients of Allocator HAL
with hal_allocator_client and the, required for all HAL client
domains, halclientdomain.
This enables this commit to remove the now unnecessary hwallocator_use
macro because its binder_call(..., hal_allocator_server) is covered by
binder_call(hal_allocator_client, hal_allocator_server) added in this
commit.
Unfortunately apps, except isolated app, are clients of Allocator HAL
as well. This makes it hard to use the hal_client_domain(...,
hal_allocator) macro because it translates into "typeattribute" which
currently does not support being provided with a set of types, such as
{ appdomain -isolated_app }. As a workaround, hopefully until
typeattribute is improved, this commit expresses the necessary
association operation in CIL. private/technical_debt.cil introduced by
this commit is appended into the platform policy CIL file, thus
ensuring that the hack has effect on the final monolithic policy.
P. S. This change also removes Allocator HAL access from isolated_app.
Isolated app shouldn't have access to this HAL anyway.
Test: Google Play Music plays back radios
Test: Google Camera records video with sound and that video is then
successfully played back with sound
Test: YouTube app plays back clips with sound
Test: YouTube in Chrome plays back clips with sound
Bug: 34170079
Change-Id: Id00bba6fde83e7cf04fb58bc1c353c2f66333f92
On PRODUCT_FULL_TREBLE devices, non-vendor domains (except vendor
apps) are not permitted to use Binder. This commit thus:
* groups non-vendor domains using the new "coredomain" attribute,
* adds neverallow rules restricting Binder use to coredomain and
appdomain only, and
* temporarily exempts the domains which are currently violating this
rule from this restriction. These domains are grouped using the new
"binder_in_vendor_violators" attribute. The attribute is needed
because the types corresponding to violators are not exposed to the
public policy where the neverallow rules are.
Test: mmm system/sepolicy
Test: Device boots, no new denials
Test: In Chrome, navigate to ip6.me, play a YouTube video
Test: YouTube: play a video
Test: Netflix: play a movie
Test: Google Camera: take a photo, take an HDR+ photo, record video with
sound, record slow motion video with sound. Confirm videos play
back fine and with sound.
Bug: 35870313
Change-Id: I0cd1a80b60bcbde358ce0f7a47b90f4435a45c95
vndservicemanager is the context manager for binder services
that are solely registered and accessed from vendor processes.
Bug: 36052864
Test: vendorservicemanager runs
Merged-In: Ifbf536932678d0ff13d019635fe6347e185ef387
Change-Id: I430f1762eb83825f6cd4be939a69d46a8ddc80ff
vndservicemanager is the context manager for binder services
that are solely registered and accessed from vendor processes.
Bug: 36052864
Test: vendorservicemanager runs
Change-Id: Ifbf536932678d0ff13d019635fe6347e185ef387
This switches Boot Control HAL policy to the design which enables us
to conditionally remove unnecessary rules from domains which are
clients of Boot Control HAL.
Domains which are clients of Boot Control HAL, such as update_server,
are granted rules targeting hal_bootctl only when the Boot Control HAL
runs in passthrough mode (i.e., inside the client's process). When the
HAL runs in binderized mode (i.e., in another process/domain, with
clients talking to the HAL over HwBinder IPC), rules targeting
hal_bootctl are not granted to client domains.
Domains which offer a binderized implementation of Boot Control HAL,
such as hal_bootctl_default domain, are always granted rules targeting
hal_bootctl.
P. S. This commit removes direct access to Boot Control HAL from
system_server because system_server is not a client of this HAL. This
commit also removes bootctrl_block_device type which is no longer
used. Finally, boot_control_hal attribute is removed because it is now
covered by the hal_bootctl attribute.
Test: Device boots up, no new denials
Test: Reboot into recovery, sideload OTA update succeeds
Test: Apply OTA update via update_engine:
1. make dist
2. Ensure device has network connectivity
3. ota_call.py -s <serial here> out/dist/sailfish-ota-*.zip
Bug: 34170079
Change-Id: I9c410c092069e431a3852b66c04c4d2a9f1a25cf
This switches most remaining HALs to the _client/_server approach.
To unblock efforts blocked on majority of HALs having to use this
model, this change does not remove unnecessary rules from clients of
these HALs. That work will be performed in follow-up commits. This
commit only adds allow rules and thus does not break existing
functionality.
The HALs not yet on the _client/_server model after this commit are:
* Allocator HAL, because it's non-trivial to declare all apps except
isolated apps as clients of this HAL, which they are.
* Boot HAL, because it's still on the non-attributized model and I'm
waiting for update_engine folks to answer a couple of questions
which will let me refactor the policy of this HAL.
Test: mmm system/sepolicy
Test: Device boots, no new denials
Test: Device boots in recovery mode, no new denials
Bug: 34170079
Change-Id: I03e6bcec2fa02f14bdf17d11f7367b62c68a14b9
This switches Sensors HAL policy to the design which enables us to
conditionally remove unnecessary rules from domains which are clients
of Sensors HAL.
Domains which are clients of Sensors HAL, such as system_server, are
granted rules targeting hal_sensors only when the Sensors HAL runs in
passthrough mode (i.e., inside the client's process). When the HAL
runs in binderized mode (i.e., in another process/domain, with clients
talking to the HAL over HwBinder IPC), rules targeting hal_sensors are
not granted to client domains.
Domains which offer a binderized implementation of Sensors HAL, such
as hal_sensors_default domain, are always granted rules targeting
hal_sensors.
P. S. This commit also removes
allow system_server sensors_device:chr_file rw_file_perms
because this is device-specific and thus not needed in device-agnostic
policy. The device-specific policy of the affected devices already has
this rule.
Test: Device boots, no new denials
Test: adb shell dumpsys sensorservice
lists tons of sensors
Test: Proprietary sensors test app indicates that there are sensors
and that the app can register to listen for updates for sensors
and that such updates arrive to the app.
Bug: 34170079
Change-Id: I61bf779070eabcb64ae73724d62b6e837319a668
Move hostapd to vendor/bin/ because it's only used by WIFI HAL.
This commit is for sepolicy corresponding changes.
Bug: 34236942
Bug: 34237659
Test: Hotspot works fine. Integration test.
Change-Id: I2ee165970a20f4015d5d62fc590d448e9acb92c1
Note: The existing rules allowing socket communication will be removed
once we migrate over to HIDL completely.
(cherry-pick of 2a9595ede2)
Bug: 34603782
Test: Able to connect to wifi networks.
Test: Will be sending for full wifi integration tests
(go/wifi-test-request)
Change-Id: I9ee238fd0017ec330f6eb67ef9049211f7bd4615
Bug: 35328775
Test: works in both binderized and passthrough modes
Merged-In: I1f827b4983e5e67c516e4488ad3497dd62db7e20
Change-Id: I1f827b4983e5e67c516e4488ad3497dd62db7e20
Note: The existing rules allowing socket communication will be removed
once we migrate over to HIDL completely.
Bug: 34603782
Test: Able to connect to wifi networks.
Test: Will be sending for full wifi integration tests
(go/wifi-test-request)
Change-Id: I9ee238fd0017ec330f6eb67ef9049211f7bd4615
This switches Keymaster HAL policy to the design which enables us to
conditionally remove unnecessary rules from domains which are clients
of Keymaster HAL.
Domains which are clients of Keymaster HAL, such as keystore and vold
domains, are granted rules targeting hal_keymaster only when the
Keymaster HAL runs in passthrough mode (i.e., inside the client's
process). When the HAL runs in binderized mode (i.e., in another
process/domain, with clients talking to the HAL over HwBinder IPC),
rules targeting hal_keymaster are not granted to client domains.
Domains which offer a binderized implementation of Keymaster HAL, such
as hal_keymaster_default domain, are always granted rules targeting
hal_keymaster.
Test: Password-protected sailfish boots up and lock screen unlocks --
this exercises vold -> Keymaster HAL interaction
Test: All Android Keystore CTS tests pass -- this exercises keystore ->
Keymaster HAL interaction:
make cts cts-tradefed
cts-tradefed run singleCommand cts --skip-device-info \
--skip-preconditions --skip-connectivity-check --abi arm64-v8a \
--module CtsKeystoreTestCases
Bug: 34170079
Change-Id: I2254d0fdee72145721654d6c9e6e8d3331920ec7
This switches Wi-Fi HAL policy to the design which enables us to
conditionally remove unnecessary rules from domains which are clients
of Wi-Fi HAL.
Domains which are clients of Wi-Fi HAL, such as system_server domain,
are granted rules targeting hal_wifi only when the Wi-Fi HAL runs in
passthrough mode (i.e., inside the client's process). When the HAL
runs in binderized mode (i.e., in another process/domain, with clients
talking to the HAL over HwBinder IPC), rules targeting hal_wifi are
not granted to client domains.
Domains which offer a binderized implementation of Wi-Fi HAL, such as
hal_wifi_default domain, are always granted rules targeting hal_wifi.
Test: Setup Wizard (incl. adding a Google Account) completes fine with
Wi-Fi connectivity only
Test: Toggle Wi-Fi off, on, off, on
Test: Use System UI to see list of WLANs and connect to one which does
not require a password, and to one which requries a PSK
Test: ip6.me loads fine in Chrome over Wi-Fi
Bug: 34170079
Change-Id: I7a216a06727c88b7f2c23d529f67307e83bed17f
This switches Dumpstate HAL policy to the design which enables us to
conditionally remove unnecessary rules from domains which are clients
of Dumpstate HAL.
Domains which are clients of Dumpstate HAL, such as dumpstate domain,
are granted rules targeting hal_dumpstate only when the Dumpstate HAL
runs in passthrough mode (i.e., inside the client's process). When the
HAL runs in binderized mode (i.e., in another process/domain, with
clients talking to the HAL over HwBinder IPC), rules targeting
hal_dumpstate are not granted to client domains.
Domains which offer a binderized implementation of Dumpstate HAL, such
as hal_dumpstate_default domain, are always granted rules targeting
hal_dumpstate.
Test: adb bugreport
Test: Take bugreport through system UI
Bug: 34170079
Change-Id: I3e827534af03cdfa876921c5fa4af3a53025ba27
This switches Fingerprint HAL policy to the design which enables us to
conditionally remove unnecessary rules from domains which are clients
of Bluetooth HAL.
Domains which are clients of Fingerprint HAL, such as system_server
domain, are granted rules targeting hal_fingerprint only when the
Fingerprint HAL runs in passthrough mode (i.e., inside the client's
process). When the HAL runs in binderized mode (i.e., in another
process/domain, with clients talking to the HAL over HwBinder IPC),
rules targeting hal_fingerprint are not granted to client domains.
Domains which offer a binderized implementation of Fingerprint HAL,
such as hal_fingerprint_default domain, are always granted rules
targeting hal_fingerprint.
NOTE: This commit also removes unnecessary allow rules from
Fingerprint HAL, such access to servicemanager (not hwservicemanager)
and access to keystore daemon over Binder IPC. Fingerprint HAL does
not use this functionality anyway and shouldn't use it either.
Test: Enable fingerprint + PIN secure lock screen, confirm it unlocks
with fingerprint or PIN
Test: Disable PIN (and thus fingerprint) secure lock screen
Test: make FingerprintDialog, install, make a fake purchase
Test: Add fingerprint_hidl_hal_test to device.mk, build & add to device,
adb shell stop,
adb shell /data/nativetest64/fingerprint_hidl_hal_test/fingerprint_hidl_hal_test -- all tests pass
Bug: 34170079
Change-Id: I6951c0f0640194c743ff7049357c77f5f21b71a1
This switches DRM HAL policy to the design which enables us to
conditionally remove unnecessary rules from domains which are clients
of DRM HAL.
Domains which are clients of DRM HAL, such as mediadrmserver domain,
are granted rules targeting hal_drm only when the DRM HAL runs in
passthrough mode (i.e., inside the client's process). When the HAL
runs in binderized mode (i.e., in another process/domain, with
clients talking to the HAL over HwBinder IPC), rules targeting hal_drm
are not granted to client domains.
Domains which offer a binderized implementation of DRM HAL, such as
hal_drm_default domain, are always granted rules targeting hal_drm.
Test: Play movie using Google Play Movies
Test: Play movie using Netflix
Bug: 34170079
Change-Id: I3ab0e84818ccd61e54b90f7ade3509b7dbf86fb9
This switches Camera HAL policy to the design which enables us to
conditionally remove unnecessary rules from domains which are clients
of Camera HAL.
Domains which are clients of Camera HAL, such as cameraserver domain,
are granted rules targeting hal_camera only when the Camera HAL runs
in passthrough mode (i.e., inside the client's process). When the HAL
runs in binderized mode (i.e., in another process/domain, with clients
talking to the HAL over HwBinder IPC), rules targeting hal_camera are
not granted to client domains.
Domains which offer a binderized implementation of Camera HAL, such
as hal_camera_default domain, are always granted rules targeting
hal_camera.
Test: Take non-HDR photo using Google Camera app
Test: Take HDR photo using Google Camera app
Test: Record video using Google Camera app
Bug: 34170079
Change-Id: I463646cf79fede57f11ccd4ec2cbc37a4fff141e
SELinux labeling of filesystem files ignores symlinks. Unfortunately,
/vendor is a symlink on devices without vendor partition
(e.g., hikey). Thus, policy in directories which are used both for
devices with vendor partition and for devices without vendor partition
must be adjusted to match both /vendor and /system/vendor. It is
assumed that the /vendor symlink, if it exists at all, always points
to /system/vendor.
The alternative solution of adjusting vendor policy file labelling
rules at vendor policy build time, when the actual on-device paths are
known, was considered to make it harder to see how files are labelled
by looking solely at the source tree.
Test: Files under /vendor/bin/hw correctly labelled on sailfish,
angler, and a device which uses the /vendor symlink.
Bug: 35431549
Change-Id: If6ccb2c9cb85b0589db03ab86de8071e15d5366f
This starts the switch for HAL policy to the approach where:
* domains which are clients of Foo HAL are associated with
hal_foo_client attribute,
* domains which offer the Foo HAL service over HwBinder are
associated with hal_foo_server attribute,
* policy needed by the implementation of Foo HAL service is written
against the hal_foo attribute. This policy is granted to domains
which offer the Foo HAL service over HwBinder and, if Foo HAL runs
in the so-called passthrough mode (inside the process of each
client), also granted to all domains which are clients of Foo HAL.
hal_foo is there to avoid duplicating the rules for hal_foo_client
and hal_foo_server to cover the passthrough/in-process Foo HAL and
binderized/out-of-process Foo HAL cases.
A benefit of associating all domains which are clients of Foo HAL with
hal_foo (when Foo HAL is in passthrough mode) is that this removes the
need for device-specific policy to be able to reference these domains
directly (in order to add device-specific allow rules). Instead,
device-specific policy only needs to reference hal_foo and should no
longer need to care which particular domains on the device are clients
of Foo HAL. This can be seen in simplification of the rules for
audioserver domain which is a client of Audio HAL whose policy is
being restructured in this commit.
This commit uses Audio HAL as an example to illustrate the approach.
Once this commit lands, other HALs will also be switched to this
approach.
Test: Google Play Music plays back radios
Test: Google Camera records video with sound and that video is then
successfully played back with sound
Test: YouTube app plays back clips with sound
Test: YouTube in Chrome plays back clips with sound
Bug: 34170079
Change-Id: I2597a046753edef06123f0476c2ee6889fc17f20
hal_*_default daemons whose policy is in common/device-agnostic policy
are provided by the vendor image (see vendor/file_contexts). Thus,
their policy should also reside in the vendor image, rather than in
the system image. This means their policy should live in the vendor
subdirectory of this project.
Test: Device boots and appears to work
Bug: 34135607
Bug: 34170079
Change-Id: I6613e43733e03d4a3d4726f849732d903e024016
