From 6d0928efa15f61e2f6f034453a519b2296adc146 Mon Sep 17 00:00:00 2001
From: "gavin%gavinsharp.com" <gavin%gavinsharp.com>
Date: Tue, 2 Aug 2005 23:08:52 +0000
Subject: [PATCH] Bug 247427 followup fix: ensure file exists before trying to
 open it, patch by O. Atsushi (Torisugari) <torisugari@gmail.com>,
 r+a=bsmedberg

---
 .../migration/src/nsNetscapeProfileMigratorBase.cpp        | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/browser/components/migration/src/nsNetscapeProfileMigratorBase.cpp b/browser/components/migration/src/nsNetscapeProfileMigratorBase.cpp
index 40a339bc7ea2..91d2b629fc39 100644
--- a/browser/components/migration/src/nsNetscapeProfileMigratorBase.cpp
+++ b/browser/components/migration/src/nsNetscapeProfileMigratorBase.cpp
@@ -77,6 +77,13 @@ nsNetscapeProfileMigratorBase::GetProfileDataFromRegistry(nsILocalFile* aRegistr
 {
   nsresult rv = NS_OK;
 
+  // Ensure aRegistryFile exists before open it
+  PRBool regFileExists = PR_FALSE;
+  rv = aRegistryFile->Exists(&regFileExists);
+  NS_ENSURE_SUCCESS(rv, rv);
+  if (!regFileExists)
+    return NS_ERROR_FILE_NOT_FOUND;
+
   // Open It
   nsCOMPtr<nsIRegistry> reg(do_CreateInstance("@mozilla.org/registry;1"));
   reg->Open(aRegistryFile);