commit 51224f6458335f41913f9b44371b32bfa8650b49
author Pavel Grafov <pgrafov@google.com> Thu Jun 27 14:01:21 2019 +0100
committer Pavel Grafov <pgrafov@google.com> Tue Jul 02 16:36:02 2019 +0100
tree 25907ccb03b7f3319626904d0e1c8972f91873e9
parent 0a0be77a82ac19cff659f05c9d71ec2c3b4ce5f9

Minor refactoring in DPMS.

* extracted enforceSystemCaller

* only allow system callers to call reportPasswordChanged. Currently
  access is limited to callers posessing BIND_DEVICE_ADMIN and having
  cross-user permission when calling for different user. Since this is
  a hidden API and is only called from LockSettingsService, narrow
  callers down to system only.

Bug: none
Test: atest --generate-new-metrics 10 com.android.cts.devicepolicy.ManagedProfileTest#testResetPasswordWithTokenBeforeUnlock com.android.cts.devicepolicy.ManagedProfileTest#testClearPasswordWithTokenBeforeUnlock
Change-Id: Iab4ff1e4827a6217eedc5fade5641845ad72e8f0