Set system time early to get more accurate timezones

Zygote reads the system time and caches the timezone information.
So start time_daemon early so that it can set the time before
zygote starts up and reads the time.

Bug: 62473512
Test: Manual: Check adb logs to ensure Zygote starts after system
              time is set.

Change-Id: I98fca37928e1822614f9fcb39869e664453a2c3e

init.hardware.rc

@@ -185,6 +185,9 @@ on late-fs
     # Mount RW partitions which need run fsck
     mount_all /vendor/etc/fstab.${ro.hardware} --late
 
+    # Start time daemon early so that the system time can be set early
+    start time_daemon
+
 on post-fs
     # set RLIMIT_MEMLOCK to 64MB
     setrlimit 8 67108864 67108864
@@ -223,6 +226,8 @@ on post-fs-data
     # Set indication (checked by vold) that we have finished this action
     setprop vold.post_fs_data_done 1
 
+    # Wait until the system time is set
+    wait_for_prop sys.time.set true
 
 # zygote need to be started after otapreopt which will be done on post-fs-data
 on zygote-start
@@ -491,7 +496,7 @@ service qseecomd /vendor/bin/qseecomd
    group root
 
 service time_daemon /vendor/bin/time_daemon
-   class late_start
+   class core
    user root
    group root
 

sepolicy/vendor/property.te

@@ -12,3 +12,4 @@ type wc_prop, property_type;
 type thermal_prop, property_type;
 type modem_diag_prop, property_type;
 type tel_mon_prop, property_type;
+type sys_time_prop, property_type;

sepolicy/vendor/property_contexts

@@ -20,3 +20,4 @@ ctl.thermal-engine         u:object_r:thermal_prop:s0
 persist.sys.modem.diag.    u:object_r:modem_diag_prop:s0
 sys.modem.diag.            u:object_r:modem_diag_prop:s0
 persist.radio.enable_tel_mon  u:object_r:tel_mon_prop:s0
+sys.time.set               u:object_r:sys_time_prop:s0

sepolicy/vendor/time_daemon.te

@@ -13,6 +13,9 @@ allow time_daemon sysfs_soc:dir search;
 allow time_daemon sysfs_soc:file r_file_perms;
 allow time_daemon sysfs_msm_subsys:dir search;
 
+# Set sys.time.set property
+set_prop(time_daemon, sys_time_prop);
+
 allow time_daemon persist_file:dir w_dir_perms;
 allow time_daemon persist_file:file rw_file_perms;