Commit graph

21 commits

Author SHA1 Message Date
Inseob Kim
3dbf3d8ac8 Add wifi_hal_prop and remove exported_wifi_prop
To remove bad context names "exported*_prop"

Bug: 155844385
Test: boot and see no denials
Change-Id: Icd30be64355699618735d4012461835eca8cd651
Merged-In: Icd30be64355699618735d4012461835eca8cd651
(cherry picked from commit 37c2d4d0c9)
(cherry picked from commit 3b66e9b9f8)
2020-07-17 17:38:13 +09:00
Roger Wang
49f2954275 Allow dumpstate to dump wlan hal log on userbuild
To check issue on userbuild, wlan hal log
is helpful.

Bug: 122265104
Test: Manully, log collected on user build
Change-Id: I5aa96aa796ca7dfb92e97df3e7be054ff79f6e3d
2019-03-21 12:27:44 +08:00
xshu
04fad00762 Wifi HAL SIOCETHTOOL sepolicy
Allow wifi HAL to use SIOCETHTOOL. This permission is needed to get
factory MAC address of the device.

Bug: 111634904
Test: Manual check that the device can get factory MAC address
Change-Id: I50e91ef7390ad4fba6e014990ee23feb777c4391
2018-12-04 17:21:19 -08:00
Steven Moreland
9234e00daf hal_attribute_hwservice_client drop '_client'
Since this attribute just associates a hal_attribute
with a given hwservice in the standard way.

Bug: 80319537
Test: boot + sanity + test for denials
Change-Id: I545de165515387317e6920ce8f5e8c491f9ab24e
2018-06-06 09:30:18 -07:00
Steven Moreland
343e24a1be hal_attribute_hwservice_client += add_hwservice
For sanity, this makes 'hal_attribute_hwservice_client'
be associated with a specific hwservice thus making things
consistent.

After this change, only configstore, hal_allocator, and the
fwk_* services are inconsistent with all other HALs.

Bug: 80319537
Test: boot device, sanity tests, check for denials
Change-Id: Ibffc65c9567a429e07a3dc4dd41117738459dc2a
2018-06-06 09:25:52 -07:00
Steven Moreland
8fc7981885 Find hal_foo_hwservice -> you are hal_foo_client.
Before, it was possible to access a hwservice without declaring
that you were a client.

This introduces the following macro:
hal_attribute_hwservice_client(hal_foo, hal_foo_hwservice)

which makes sure the above implication holds using a neverallow rule.

Bug: 80319537
Test: boot + sanity
Change-Id: Iededae68f14f0f3bd412c1205aa3b650a54d55c6
2018-05-30 16:46:57 -07:00
Jeff Vander Stoep
7a4af30b38 Start the process of locking down proc/net
Files in /proc/net leak information. This change is the first step in
determining which files apps may use, whitelisting benign access, and
otherwise removing access while providing safe alternative APIs.

To that end, this change:
* Introduces the proc_net_type attribute which will assigned to any
new SELinux types in /proc/net to avoid removing access to privileged
processes. These processes may be evaluated later, but are lower
priority than apps.
* Labels /proc/net/{tcp,tcp6,udp,udp6} as proc_net_vpn due to existing
use by VPN apps. This may be replaced by an alternative API.
* Audits all other proc/net access for apps.
* Audits proc/net access for other processes which are currently
granted broad read access to /proc/net but should not be including
storaged, zygote, clatd, logd, preopt2cachename and vold.

Bug: 9496886
Bug: 68016944
Test: Boot Taimen-userdebug. On both wifi and cellular: stream youtube
    navigate maps, send text message, make voice call, make video call.
    Verify no avc "granted" messages in the logs.
Test: A few VPN apps including "VPN Monster", "Turbo VPN", and
"Freighter". Verify no logspam with the current setup.
Test: atest CtsNativeNetTestCases
Test: atest netd_integration_test
Test: atest QtaguidPermissionTest
Test: atest FileSystemPermissionTest

Change-Id: I7e49f796a25cf68bc698c6c9206e24af3ae11457
Merged-In: I7e49f796a25cf68bc698c6c9206e24af3ae11457
(cherry picked from commit 087318957f)
2018-05-04 21:36:33 +00:00
Jaekyun Seok
224921d18a Whitelist vendor-init-settable bluetooth_prop and wifi_prop
Values of the following properties are set by SoC vendors on some
devices including Pixels.
- persist.bluetooth.a2dp_offload.cap
- persist.bluetooth.a2dp_offload.enable
- persist.vendor.bluetooth.a2dp_offload.enable
- ro.bt.bdaddr_path
- wlan.driver.status

So they should be whitelisted for compatibility.

Bug: 77633703
Test: succeeded building and tested with Pixels
Change-Id: Ib2b81bcc1fd70ddd571dc7fb2b923b576d62b7d5
2018-04-13 09:25:06 +09:00
Jong Wook Kim
041336510b Wifi HAL SIOCSIFHWADDR sepolicy
Add sepolicy rule to grant Wifi HAL permission to use SIOCSIFHWADDR
ioctl. This permission is needed to dynamically change MAC address of
the device.

We are moving the implementation of setting the MAC address from
WifiCond to Vendor HAL to give vendors flexibility in supporting
Connected MAC Randomization. Will clean up WifiCond sepolicy afterwards.

Bug: 74347653
Test: Verified manually
Change-Id: I334cefddf385ecb1ee169eb692c4e0060c26d6d9
2018-03-23 09:54:06 -07:00
xshu
6ad3c891bc Wifi hal - Firmware dump permissions
we are aiming to improve logging performance by having wifi hal
directly write to the flash.

Wifi hal need to be able to create, write, and delete files in
a directory. This will be restricted to userdebug and eng builds only.

Bug: 70170285
Test: compile, run on device
Change-Id: Id0cd317411f4c393d7529aa31b501046d7350edb
2017-12-18 13:11:02 -08:00
Benjamin Gordon
9b2e0cbeea sepolicy: Add rules for non-init namespaces
In kernel 4.7, the capability and capability2 classes were split apart
from cap_userns and cap2_userns (see kernel commit
8e4ff6f228e4722cac74db716e308d1da33d744f). Since then, Android cannot be
run in a container with SELinux in enforcing mode.

This change applies the existing capability rules to user namespaces as
well as the root namespace so that Android running in a container
behaves the same on pre- and post-4.7 kernels.

This is essentially:
  1. New global_capability_class_set and global_capability2_class_set
     that match capability+cap_userns and capability2+cap2_userns,
     respectively.
  2. s/self:capability/self:global_capability_class_set/g
  3. s/self:capability2/self:global_capability2_class_set/g
  4. Add cap_userns and cap2_userns to the existing capability_class_set
     so that it covers all capabilities.  This set was used by several
     neverallow and dontaudit rules, and I confirmed that the new
     classes are still appropriate.

Test: diff new policy against old and confirm that all new rules add
      only cap_userns or cap2_userns;
      Boot ARC++ on a device with the 4.12 kernel.
Bug: crbug.com/754831

Change-Id: I4007eb3a2ecd01b062c4c78d9afee71c530df95f
2017-11-21 08:34:32 -07:00
Tomonori Nanbu
9d86e622e3 Merge "Add sepolicy for hal_wifi to access /proc/modules" am: 6acd70b918
am: ded0b58d62

Change-Id: I574e60486bb12214e33a8e9aabf7794d4ebc0b1a
2017-06-22 15:45:20 +00:00
Tomonori Nanbu
403efef2af Add sepolicy for hal_wifi to access /proc/modules
Add sepolicy to hal_wifi to access /proc/modules
to check if Wi-Fi driver is loaded.

Bug: 62013623
Change-Id: Ib700170095b183a1e0e6a36b64e7c65655174f21
2017-06-14 00:46:55 +09:00
Alex Klyubin
53656c1742 Restrict access to hwservicemanager
This adds fine-grained policy about who can register and find which
HwBinder services in hwservicemanager.

Test: Play movie in Netflix and Google Play Movies
Test: Play video in YouTube app and YouTube web page
Test: In Google Camera app, take photo (HDR+ and conventional),
      record video (slow motion and normal), and check that photos
      look fine and videos play back with sound.
Test: Cast screen to a Google Cast device
Test: Get location fix in Google Maps
Test: Make and receive a phone call, check that sound works both ways
      and that disconnecting the call frome either end works fine.
Test: Run RsHelloCompute RenderScript demo app
Test: Run fast subset of media CTS tests:
      make and install CtsMediaTestCases.apk
      adb shell am instrument -e size small \
          -w 'android.media.cts/android.support.test.runner.AndroidJUnitRunner'
Test: Play music using Google Play music
Test: Adjust screen brightness via the slider in Quick Settings
Test: adb bugreport
Test: Enroll in fingerprint screen unlock, unlock screen using
      fingerprint
Test: Apply OTA update:
      Make some visible change, e.g., rename Settings app.
      make otatools && \
      make dist
      Ensure device has network connectivity
      ota_call.py -s <serial here> --file out/dist/sailfish-ota-*.zip
      Confirm the change is now live on the device
Bug: 34454312
(cherry picked from commit 632bc494f1)
Merged-In: Iecf74000e6c68f01299667486f3c767912c076d3
Change-Id: I7a9a487beaf6f30c52ce08e04d415624da49dd31
2017-04-21 09:54:53 -07:00
Roshan Pius
e62805d7cc sepolicy: Allow hal_wifi to set wlan driver status prop
The new wifi HAL manages the wlan driver and hence needs to be able to
load/unload the driver. The "wlan.driver.status" is used to indicate the
state of the driver to the rest of the system. There are .rc scripts for
example which wait for the state of this property.

Denials:
03-01 13:31:43.394   476   476 W android.hardwar: type=1400
audit(0.0:7243): avc: denied { read } for name="u:object_r:wifi_prop:s0"
dev="tmpfs" ino=10578 scontext=u:r:hal_wifi_default:s0
tcontext=u:object_r:wifi_prop:s0 tclass=file permissive=0
03-01 13:31:43.399   476   476 E libc    : Access denied finding
property "wlan.driver.status"

Bug: 35765841
Test: Denials no longer seen
Change-Id: I502494af7140864934038ef51cb0326ba3902c63
2017-03-03 09:32:03 -08:00
Alex Klyubin
1d2a1476ae Switch Wi-Fi HAL policy to _client/_server
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
2017-02-22 15:12:19 -08:00
Steven Moreland
a25192262b haldomain: add hwbinder_use
All hals need to use hwbinder.

Test: no additional denials
Bug: 34180936
Change-Id: Ie92cdbd79fc75062c4afa4cda53cb57ccde7e370
2017-01-18 09:47:50 -08:00
Steven Moreland
29eed9faea All hal policies expressed as attributes.
Bug: 32123421
Bug: 32905206

Test: compiles, nfc works
Change-Id: Ibf72ef70255573e4df0863ea640354b3c37eb47d
2016-12-13 17:18:27 -08:00
Roshan Pius
85e3e7d6e1 hal_wifi: Allow HAL to reload wifi firmware
Need write permissions on the specified sysfs path for reloading
firmware.

Denials:
01-21 23:39:01.650  4669  4669 W android.hardwar: type=1400
audit(0.0:103): avc: denied { write } for name="fwpath" dev="sysfs"
ino=6847 scontext=u:r:hal_wifi:s0
tcontext=u:object_r:sysfs_wlan_fwpath:s0 tclass=file permissive=0
01-21 23:39:01.653  4669  4669 E android.hardware.wifi@1.0-service:
Failed to open wlan fw path param: Permission denied

Bug: 32018162
Test: Denials no longer present in the logs.
Change-Id: I1a468e7c2a2a4360a2b61f04f1940471d52d0dd6
2016-12-12 10:40:18 -08:00
Roshan Pius
02ed21e851 hal_wifi: Allow system_server to access wifi HIDL services
We're going to be using Android framework directly to invoke Wifi HIDL
calls. So, change permissions appropriately.

Bug: 33398154
Test: Verfied that framework is able to make HIDL calls using
go/aog/310610.

Change-Id: I4d0d88961753ad73f3876aec58b26b89486cc02a
2016-12-12 10:40:14 -08:00
Roshan Pius
8224596a32 wifi_hal: Rename to 'hal_wifi'
Renaming the wifi HIDL implementation to 'hal_wifi' from 'wifi_hal_legacy'
to conform with HIDL style guide.

Denials:
01-01 21:55:23.896  2865  2865 I android.hardware.wifi@1.0-service:
wifi_hal_legacy is starting up...
01-01 21:55:23.898  2865  2865 W android.hardware.wifi@1.0-service:
/odm/lib64/hw/ does not exit.
01-01 21:55:23.899  2865  2865 F android.hardware.wifi@1.0-service:
service.cpp:59] Check failed: service->registerAsService("wifi") ==
android::NO_ERROR (service->registerAsService("wifi")=-2147483646,
android::NO_ERROR=0) Failed to register wifi HAL
01-01 21:55:23.899  2865  2865 F libc    : Fatal signal 6 (SIGABRT),
code -6 in tid 2865 (android.hardwar)
01-01 21:55:23.901   377   377 W         : debuggerd: handling request:
pid=2865 uid=2000 gid=2000 tid=2865
01-01 21:55:23.907  2867  2867 E         : debuggerd: Unable to connect
to activity manager (connect failed: Connection refused)
01-01 21:55:23.908  2867  2867 F DEBUG   : *** *** *** *** *** *** ***
*** *** *** *** *** *** *** *** ***
01-01 21:55:23.908  2867  2867 F DEBUG   : Build fingerprint:
'Android/aosp_angler/angler:7.0/NYC/rpius10031052:userdebug/test-keys'
01-01 21:55:23.908  2867  2867 F DEBUG   : Revision: '0'
01-01 21:55:23.908  2867  2867 F DEBUG   : ABI: 'arm64'
01-01 21:55:23.908  2867  2867 F DEBUG   : pid: 2865, tid: 2865, name:
android.hardwar  >>> /system/bin/hw/android.hardware.wifi@1.0-service
<<<
01-01 21:55:23.909  2867  2867 F DEBUG   : signal 6 (SIGABRT), code -6
(SI_TKILL), fault addr --------
01-01 21:55:23.910  2867  2867 F DEBUG   : Abort message:
'service.cpp:59] Check failed: service->registerAsService("wifi") ==
android::NO_ERROR (service->registerAsService("wifi")=-2147483646,
android::NO_ERROR=0) Failed to register wifi HAL'

Bug: 31821133
Test: Compiled and ensured that the selinux denials are no longer
present in logs.
Change-Id: I5bbbcad307e9bb9e59fff87e2926751b3aecc813
2016-10-28 09:00:31 -07:00