Don't return immediately from reboot commands.

The reboot commands return too fast, interfering with testing.
Add a pause(), which will allow the device time to complete the
reboot.

Change-Id: Ie9cc6eea67b7ff662ec71ea2329cbb94f8d55404
Bug: 11369303

adb/services.c

@@ -144,7 +144,11 @@ void reboot_service(int fd, void *arg)
     if (ret < 0) {
         snprintf(buf, sizeof(buf), "reboot failed: %d\n", ret);
         writex(fd, buf, strlen(buf));
+        goto cleanup;
     }
+    // Don't return early. Give the reboot command time to take effect
+    // to avoid messing up scripts which do "adb reboot && adb wait-for-device"
+    while(1) { pause(); }
 cleanup:
     free(arg);
     adb_close(fd);

reboot/reboot.c

@@ -68,6 +68,11 @@ int main(int argc, char *argv[])
         perror("reboot");
         exit(EXIT_FAILURE);
     }
+
+    // Don't return early. Give the reboot command time to take effect
+    // to avoid messing up scripts which do "adb shell reboot && adb wait-for-device"
+    while(1) { pause(); }
+
     fprintf(stderr, "Done\n");
     return 0;
 }