From 4b107f3033821ae1ab6f7c8c822587173faa9c72 Mon Sep 17 00:00:00 2001
From: Sean McBride <spmcbride1201@gmail.com>
Date: Sat, 1 Aug 2020 09:31:01 -0400
Subject: [PATCH] chore: cleanup debuglog file logic

---
 runtime/include/debuglog.h | 6 ++++++
 runtime/src/main.c         | 9 ++++-----
 2 files changed, 10 insertions(+), 5 deletions(-)

diff --git a/runtime/include/debuglog.h b/runtime/include/debuglog.h
index 572816e..b557c8a 100644
--- a/runtime/include/debuglog.h
+++ b/runtime/include/debuglog.h
@@ -4,6 +4,12 @@
 
 extern int32_t debuglog_file_descriptor;
 
+#ifdef LOG_TO_FILE
+#ifndef DEBUG
+#error LOG_TO_FILE is only valid if in DEBUG mode
+#endif /* DEBUG */
+#endif /* LOG_TO_FILE */
+
 /**
  * debuglog is a macro that behaves based on the macros DEBUG and LOG_TO_FILE
  * If DEBUG is not set, debuglog does nothing
diff --git a/runtime/src/main.c b/runtime/src/main.c
index acb5145..79d4dcc 100644
--- a/runtime/src/main.c
+++ b/runtime/src/main.c
@@ -135,16 +135,15 @@ void
 runtime_process_debug_log_behavior()
 {
 #ifdef LOG_TO_FILE
-	fclose(stdout);
-	fclose(stderr);
-	fclose(stdin);
 	debuglog_file_descriptor = open(RUNTIME_LOG_FILE, O_CREAT | O_TRUNC | O_WRONLY, S_IRWXU | S_IRWXG);
 	if (debuglog_file_descriptor < 0) {
-		perror("open");
+		perror("Error opening logfile\n");
 		exit(-1);
 	}
+	dup2(debuglog_file_descriptor, STDOUT_FILENO);
+	dup2(debuglog_file_descriptor, STDERR_FILENO);
 #else
-	debuglog_file_descriptor = 1;
+	debuglog_file_descriptor = STDOUT_FILENO;
 #endif /* LOG_TO_FILE */
 }
 #endif /* DEBUG */