Commit graph

7 commits

Author SHA1 Message Date
Tom Cherry
77f8d4f8ca Allow dumpstate to read /data/misc/logd always
There is no reason to deny dumpstate from reading /data/misc/logd on
user builds.  Logpersist is disallowed from running on those builds,
so there is no harm in copying this directory.

Bug: 136978224
Test: build
Change-Id: Ia58bde10e1f45978975597cd2ea1951a784d3b49
2019-07-08 13:20:10 -07:00
Pirama Arumuga Nainar
ce9c0c5a5f In native coverage builds, allow all domains to access /data/misc/trace
Bug: http://b/135139675

Coverage files are written to /data/misc/trace (governed by the
method_trace_data_file selinux type).  Allow all domains to access
(create directories, access files) this directory when native coverage
is enabled (by setting NATIVE_COVERAGE to true) in an userdebug or eng
build.

Also relax neverallow constraints to allow access to
method_trace_data_file for native coverage builds.

Test: Build 32-bit cuttlefish with coverage:
          m NATIVE_COVERAGE=true COVERAGE_PATHS="*"
      and verify that there are no selinux denials in kernel log and
      logcat.

Change-Id: I3fe7c77612854b9de7de7a0ddd5cbf44a2f5c21e
2019-06-14 08:31:51 -07:00
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
Alex Klyubin
f5446eb148 Vendor domains must not use Binder
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
2017-03-24 07:54:00 -07:00
Mark Salyzyn
384ce66246 logd: add getEventTag command and service
The event log tag service uses /dev/event-log-tags, pstore and
/data/misc/logd/event-log-tags as sticky storage for the invented
log tags.

Test: gTest liblog-unit-tests, logd-unit-tests & logcat-unit-tests
Bug: 31456426
Change-Id: Iacc8f36f4a716d4da8dca78a4a54600ad2a288dd
2017-01-31 15:50:42 +00:00
Mark Salyzyn
d33a9a194b logd: restrict access to /dev/event-log-tags
Create an event_log_tags_file label and use it for
/dev/event-log-tags.  Only trusted system log readers are allowed
direct read access to this file, no write access.  Untrusted domain
requests lack direct access, and are thus checked for credentials via
the "plan b" long path socket to the event log tag service.

Test: gTest logd-unit-tests, liblog-unit-tests and logcat-unit-tests
Bug: 31456426
Bug: 30566487
Change-Id: Ib9b71ca225d4436d764c9bc340ff7b1c9c252a9e
2017-01-31 15:50:15 +00:00
Mark Salyzyn
da62cb4dda logcat: introduce split to logd and logpersist domains
- transition to logpersist from init
- sort some overlapping negative references
- intention is to allow logpersist to be used by vendor
  userdebug logging

Test: gTest liblog-unit-tests, logd-unit-tests & logcat-unit-tests
Bug: 30566487
Change-Id: I7806f5a2548cbe0c1f257a0ba2855f2eb69d8e7c
2016-12-20 20:31:03 +00:00