Abort cleanly if we cannot acquire our lockfile.

This avoids a backtrace, and shows a clean reason for failure.

1 files changed, 6 insertions, 2 deletions

diff --git a/lib/byteback/util.rb b/lib/byteback/util.rb
index 99a5b23..9a993d6 100644
--- a/lib/byteback/util.rb
+++ b/lib/byteback/util.rb
@@ -35,8 +35,12 @@ module Byteback
       end
 
       # Own the pidfile ourselves
-      File.open(@@lockfile, 'w') do |lockfile|
-        lockfile.puts Process.pid
+      begin
+        File.open(@@lockfile, 'w') do |lockfile|
+          lockfile.puts Process.pid
+        end
+      rescue => _ex
+        fatal("Failed to open lockfile - are you running as root?")
       end
     end