From 2ba8156811dda143c9c7b91bd9f286888cc7efc0 Mon Sep 17 00:00:00 2001
From: David Sankel <camior@gmail.com>
Date: Sat, 14 Jan 2023 02:10:23 +0000
Subject: [PATCH] Elaborate missing device error

The missing device condition can also be caused by a lack of permissions
to the specified device as described in #28. This revised error message
hints that this may be the cause of the failure.

Fixes #28.
---
 fatresize.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fatresize.c b/fatresize.c
index 414f9e7..1001c8e 100644
--- a/fatresize.c
+++ b/fatresize.c
@@ -536,7 +536,7 @@ int main(int argc, char **argv) {
   printd(0, "%s (%s)\n", PACKAGE_STRING, BUILD_DATE);
 
   if (!opts.device) {
-    fprintf(stderr, "You must specify exactly one existing device.\n");
+    fprintf(stderr, "You must specify exactly one existing device you have permissions to access.\n");
     return 1;
   } else if (!opts.size && !opts.info) {
     fprintf(stderr, "You must specify new size.\n");