allow CheckKey to request mounting /system
Also provide a default implementation of CheckKey that's reasonable
for many devices (those that have power and volume keys).
Change-Id: Icf6c7746ebd866152d402059dbd27fd16bd51ff8
diff --git a/ui.cpp b/ui.cpp
index cece02d..5043ee5 100644
--- a/ui.cpp
+++ b/ui.cpp
@@ -31,6 +31,7 @@
#include <cutils/android_reboot.h>
#include "common.h"
+#include "roots.h"
#include "device.h"
#include "minui/minui.h"
#include "screen_ui.h"
@@ -47,7 +48,10 @@
key_queue_len(0),
key_last_down(-1),
key_long_press(false),
- key_down_count(0) {
+ key_down_count(0),
+ consecutive_power_keys(0),
+ consecutive_alternate_keys(0),
+ last_key(-1) {
pthread_mutex_init(&key_queue_mutex, NULL);
pthread_cond_init(&key_queue_cond, NULL);
self = this;
@@ -152,6 +156,13 @@
case RecoveryUI::ENQUEUE:
EnqueueKey(key_code);
break;
+
+ case RecoveryUI::MOUNT_SYSTEM:
+#ifndef NO_RECOVERY_MOUNT
+ ensure_path_mounted("/system");
+ Print("Mounted /system.");
+#endif
+ break;
}
}
}
@@ -258,8 +269,41 @@
pthread_mutex_unlock(&key_queue_mutex);
}
+// The default CheckKey implementation assumes the device has power,
+// volume up, and volume down keys.
+//
+// - Hold power and press vol-up to toggle display.
+// - Press power seven times in a row to reboot.
+// - Alternate vol-up and vol-down seven times to mount /system.
RecoveryUI::KeyAction RecoveryUI::CheckKey(int key) {
- return RecoveryUI::ENQUEUE;
+ if (IsKeyPressed(KEY_POWER) && key == KEY_VOLUMEUP) {
+ return TOGGLE;
+ }
+
+ if (key == KEY_POWER) {
+ ++consecutive_power_keys;
+ if (consecutive_power_keys >= 7) {
+ return REBOOT;
+ }
+ } else {
+ consecutive_power_keys = 0;
+ }
+
+ if ((key == KEY_VOLUMEUP &&
+ (last_key == KEY_VOLUMEDOWN || last_key == -1)) ||
+ (key == KEY_VOLUMEDOWN &&
+ (last_key == KEY_VOLUMEUP || last_key == -1))) {
+ ++consecutive_alternate_keys;
+ if (consecutive_alternate_keys >= 7) {
+ consecutive_alternate_keys = 0;
+ return MOUNT_SYSTEM;
+ }
+ } else {
+ consecutive_alternate_keys = 0;
+ }
+ last_key = key;
+
+ return ENQUEUE;
}
void RecoveryUI::NextCheckKeyIsLong(bool is_long_press) {