From 68f87435def2020fdc7c900f151d541fe34c9ba7 Mon Sep 17 00:00:00 2001
From: Juan Cruz Viotti <jviotti@openmailbox.org>
Date: Tue, 11 Apr 2017 00:59:08 -0400
Subject: [PATCH] fix(CLI): throw error if image is inaccessible (#1281)

Consider the following scenario:

- The user selects an image from an external drive
- The user selects a drive
- The user unmounts/ejects the external drive
- The user clicks flash

The application state will contain an image path that is no longer
accessible, causing an ENOENT error when spawning the CLI process.

Change-Type: patch
Changelog-Entry: Display a user error if the image is no longer accessible when the writer starts.
Signed-off-by: Juan Cruz Viotti <jviotti@openmailbox.org>
---
 lib/cli/options.js | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/lib/cli/options.js b/lib/cli/options.js
index 2d9b2c9a..e09e6939 100644
--- a/lib/cli/options.js
+++ b/lib/cli/options.js
@@ -107,7 +107,14 @@ module.exports = yargs
 
   // Assert that image exists
   .check((argv) => {
-    fs.accessSync(argv._[IMAGE_PATH_ARGV_INDEX]);
+    const imagePath = argv._[IMAGE_PATH_ARGV_INDEX];
+
+    try {
+      fs.accessSync(imagePath);
+    } catch (error) {
+      throw errors.createUserError('Unable to access file', `The image ${imagePath} is not accessible`);
+    }
+
     return true;
   })