commit 006c2e9934e9a4a16f3abca6064947cb8ada80a8
author Mark Salyzyn <salyzyn@google.com> Mon Aug 14 14:25:10 2017 -0700
committer Mark Salyzyn <salyzyn@google.com> Thu Aug 24 15:19:30 2017 -0700
tree a174688db469c2322bd619d807bf6b1f52a2e607
parent 99cbe530c193633fe72daf7f2e6c55f944872f9d

Switch /data/misc/reboot/last_reboot_reason to persistent property

Switch from /data/misc/reboot/last_reboot_reason to persistent
Android property persist.sys.boot.reason for indicating why the
device is rebooted or shutdown.

Introduce protection for all boot reason properties

Protect the following properties with these labels

ro.boot.bootreason      u:object_r:bootloader_boot_reason_prop:s0
sys.boot.reason         u:object_r:sys_boot_reason_prop:s0
persist.sys.boot.reason u:object_r:last_boot_reason_prop:s0

Setup the current as-need access rules for each.

ToDo: Remove u:object_r:reboot_data_file after internal fixes.

Test: system/core/bootstat/boot_reason_test.sh
Bug: 64687998
Change-Id: I3771c73933e8ae2d94aee936c7a38b6282611b80