bootstat: Record the time since factory reset on init.

Bug: 25448351
Change-Id: I71905a598e74f41c18a96d469c7a6ddd5a2e07fb

Author: jhawkins-google

Diff for: bootstat/README.md

@@ -12,6 +12,7 @@ analysis.
       -p, --print           Dump the boot event records to the console
       -r, --record          Record the timestamp of a named boot event
       --record_boot_reason  Record the reason why the device booted
+      --record_time_since_factory_reset Record the time since the device was reset
 
 ## Relative time ##
 

Diff for: bootstat/bootstat.cpp

@@ -80,7 +80,8 @@ void ShowHelp(const char *cmd) {
           "  -l, --log             Log all metrics to logstorage\n"
           "  -p, --print           Dump the boot event records to the console\n"
           "  -r, --record          Record the timestamp of a named boot event\n"
-          "  --record_boot_reason  Record the reason why the device booted\n");
+          "  --record_boot_reason  Record the reason why the device booted\n"
+          "  --record_time_since_factory_reset Record the time since the device was reset\n");
 }
 
 // Constructs a readable, printable string from the givencommand line
@@ -192,7 +193,7 @@ int main(int argc, char **argv) {
 
   int option_index = 0;
   static const char boot_reason_str[] = "record_boot_reason";
-  static const char factory_reset_str[] = "record_factory_reset";
+  static const char factory_reset_str[] = "record_time_since_factory_reset";
   static const struct option long_options[] = {
     { "help",            no_argument,       NULL,   'h' },
     { "log",             no_argument,       NULL,   'l' },

Diff for: bootstat/bootstat.rc

@@ -13,5 +13,8 @@ on property:init.svc.bootanim=stopped
     # Record the boot reason.
     exec - root root -- /system/bin/bootstat --record_boot_reason
 
+    # Record time since factory reset.
+    exec - root root -- /system/bin/bootstat --record_time_since_factory_reset
+
     # Log all boot events.
     exec - root root -- /system/bin/bootstat -l