From 864493c7697818028869ea457e649649af54656b Mon Sep 17 00:00:00 2001
From: Tom Marshall <tdm@cyngn.com>
Date: Fri, 29 Jan 2016 15:39:49 -0800
Subject: recovery: Offer to format if data wipe fails

Change-Id: I76587c4fa234c5aab52882492da295e70029f522
---
 recovery.cpp | 13 ++++++++++++-
 roots.cpp    |  5 ++++-
 2 files changed, 16 insertions(+), 2 deletions(-)

diff --git a/recovery.cpp b/recovery.cpp
index 3ecd5db..72ce09e 100644
--- a/recovery.cpp
+++ b/recovery.cpp
@@ -635,6 +635,9 @@ static bool erase_volume(const char* volume, bool force = false) {
         copy_logs();
     }
 
+    ui->SetBackground(RecoveryUI::NONE);
+    ui->SetProgressType(RecoveryUI::EMPTY);
+
     return (result == 0);
 }
 
@@ -837,11 +840,19 @@ static bool wipe_data(int should_confirm, Device* device, bool force = false) {
     modified_flash = true;
 
     ui->Print("\n-- Wiping data...\n");
-    bool success =
+    bool success;
+retry:
+    success =
         device->PreWipeData() &&
         erase_volume("/data", force) &&
         erase_volume("/cache") &&
         device->PostWipeData();
+    if (!success && !force) {
+        if (!should_confirm || yes_no(device, "Wipe failed, format instead?", "  THIS CAN NOT BE UNDONE!")) {
+            force = true;
+            goto retry;
+        }
+    }
     ui->Print("Data wipe %s.\n", success ? "complete" : "failed");
     return success;
 }
diff --git a/roots.cpp b/roots.cpp
index 4bdf192..64c12a3 100644
--- a/roots.cpp
+++ b/roots.cpp
@@ -458,7 +458,10 @@ int format_volume(const char* volume, bool force) {
 
             return rc;
         }
-        LOGE("format_volume failed to mount /data, formatting instead\n");
+        else {
+            LOGE("format_volume failed to mount /data\n");
+            return -1;
+        }
     }
 
     if (ensure_path_unmounted(volume) != 0) {
-- 
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