Add set-time and set-timezone shell cmds to alarm service
These commands allow a user to set the time and the timezone
from the shell. The shell now has signature|privileged
SET_TIME and SET_TIME_ZONE permissions.
Bug: 67751701
Test: manual - correctly sets the time and timezone from unrooted adb.
Change-Id: I1d2820fd7dadd8b1f3900c0592eb28210370ce88
diff --git a/services/core/java/com/android/server/AlarmManagerService.java b/services/core/java/com/android/server/AlarmManagerService.java
index d17ca7f..d066056 100644
--- a/services/core/java/com/android/server/AlarmManagerService.java
+++ b/services/core/java/com/android/server/AlarmManagerService.java
@@ -57,6 +57,9 @@
import android.os.PowerManager;
import android.os.Process;
import android.os.RemoteException;
+import android.os.ResultReceiver;
+import android.os.ShellCallback;
+import android.os.ShellCommand;
import android.os.SystemClock;
import android.os.SystemProperties;
import android.os.Trace;
@@ -1369,6 +1372,17 @@
}
}
+ boolean setTimeImpl(long millis) {
+ if (mNativeData == 0) {
+ Slog.w(TAG, "Not setting time since no alarm driver is available.");
+ return false;
+ }
+
+ synchronized (mLock) {
+ return setKernelTime(mNativeData, millis) == 0;
+ }
+ }
+
void setTimeZoneImpl(String tz) {
if (TextUtils.isEmpty(tz)) {
return;
@@ -1766,14 +1780,7 @@
"android.permission.SET_TIME",
"setTime");
- if (mNativeData == 0) {
- Slog.w(TAG, "Not setting time since no alarm driver is available.");
- return false;
- }
-
- synchronized (mLock) {
- return setKernelTime(mNativeData, millis) == 0;
- }
+ return setTimeImpl(millis);
}
@Override
@@ -1836,6 +1843,13 @@
dumpImpl(pw);
}
}
+
+ @Override
+ public void onShellCommand(FileDescriptor in, FileDescriptor out,
+ FileDescriptor err, String[] args, ShellCallback callback,
+ ResultReceiver resultReceiver) {
+ (new ShellCmd()).exec(this, in, out, err, args, callback, resultReceiver);
+ }
};
void dumpImpl(PrintWriter pw) {
@@ -4244,4 +4258,49 @@
}
}
}
+
+ private class ShellCmd extends ShellCommand {
+
+ IAlarmManager getBinderService() {
+ return IAlarmManager.Stub.asInterface(mService);
+ }
+
+ @Override
+ public int onCommand(String cmd) {
+ if (cmd == null) {
+ return handleDefaultCommands(cmd);
+ }
+
+ final PrintWriter pw = getOutPrintWriter();
+ try {
+ switch (cmd) {
+ case "set-time":
+ final long millis = Long.parseLong(getNextArgRequired());
+ return (getBinderService().setTime(millis)) ? 0 : -1;
+ case "set-timezone":
+ final String tz = getNextArgRequired();
+ getBinderService().setTimeZone(tz);
+ return 0;
+ default:
+ return handleDefaultCommands(cmd);
+ }
+ } catch (Exception e) {
+ pw.println(e);
+ }
+ return -1;
+ }
+
+ @Override
+ public void onHelp() {
+ PrintWriter pw = getOutPrintWriter();
+ pw.println("Alarm manager service (alarm) commands:");
+ pw.println(" help");
+ pw.println(" Print this help text.");
+ pw.println(" set-time TIME");
+ pw.println(" Set the system clock time to TIME where TIME is milliseconds");
+ pw.println(" since the Epoch.");
+ pw.println(" set-timezone TZ");
+ pw.println(" Set the system timezone to TZ where TZ is an Olson id.");
+ }
+ }
}