From 250195924e60d5f77d495368b1c8231232a1a274 Mon Sep 17 00:00:00 2001
From: tastytea <tastytea@tastytea.de>
Date: Thu, 15 Oct 2020 08:39:09 +0200
Subject: [PATCH] Throw better error if lockfile is not writable.

---
 src/files.cpp | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/src/files.cpp b/src/files.cpp
index 7f48893..80b0151 100644
--- a/src/files.cpp
+++ b/src/files.cpp
@@ -229,8 +229,16 @@ bool create_lockfile()
 
     ofstream file;
     file.exceptions(std::ofstream::failbit | std::ofstream::badbit);
-    file.open(lockfile);
-    file << getpid();
+    try
+    {
+        file.open(lockfile);
+        file << getpid();
+    }
+    catch (const std::ofstream::failure &e)
+    {
+        const auto msg{string("Could not write lockfile: ") += e.what()};
+        throw std::runtime_error{msg.c_str()};
+    }
 
     return true;
 }