From b902f9b4d48328e00d92188f432568b3b3c07391 Mon Sep 17 00:00:00 2001
From: Paul Cristian Sarbu <paul.cristian.sarbu@huawei.com>
Date: Mon, 5 Aug 2024 11:26:57 +0200
Subject: When using errno, log the actual error message

For the user it is more useful to see the actual error message,
provided by strerror(), than the pure error code.
---
 src/other_tools/just_mr/launch.cpp | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

(limited to 'src/other_tools/just_mr/launch.cpp')

diff --git a/src/other_tools/just_mr/launch.cpp b/src/other_tools/just_mr/launch.cpp
index d83ef8e5..ccebd966 100644
--- a/src/other_tools/just_mr/launch.cpp
+++ b/src/other_tools/just_mr/launch.cpp
@@ -14,7 +14,8 @@
 
 #include "src/other_tools/just_mr/launch.hpp"
 
-#include <cerrno>  // for errno
+#include <cerrno>   // for errno
+#include <cstring>  // for strerror()
 #include <filesystem>
 #include <utility>
 
@@ -256,6 +257,6 @@ auto CallJust(std::optional<std::filesystem::path> const& config_file,
     [[maybe_unused]] auto res =
         execvp(argv[0], static_cast<char* const*>(argv.data()));
     // execvp returns only if command errored out
-    Logger::Log(LogLevel::Error, "execvp failed with error code {}", errno);
+    Logger::Log(LogLevel::Error, "execvp failed with:\n{}", strerror(errno));
     return kExitExecError;
 }
-- 
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