From 8dc5c2296a053435f603aa9362fddb99cfeee55d Mon Sep 17 00:00:00 2001
From: Alexander Neumann <alexander@bumpern.de>
Date: Sun, 8 Feb 2015 14:46:29 +0100
Subject: [PATCH] debug: do not seek after creating log file

---
 debug/debug.go | 16 +++++++++-------
 1 file changed, 9 insertions(+), 7 deletions(-)

diff --git a/debug/debug.go b/debug/debug.go
index 7b252e1be..4ec274a6b 100644
--- a/debug/debug.go
+++ b/debug/debug.go
@@ -34,6 +34,15 @@ func initDebugLogger() (lgr *log.Logger) {
 		// open logfile
 		f, err := os.OpenFile(debugfile, os.O_WRONLY|os.O_APPEND, 0600)
 
+		if err == nil {
+			// seek to the end
+			_, err = f.Seek(2, 0)
+			if err != nil {
+				fmt.Fprintf(os.Stderr, "unable to seek to the end of %v: %v\n", debugfile, err)
+				os.Exit(3)
+			}
+		}
+
 		if err != nil && os.IsNotExist(err) {
 			// create logfile
 			f, err = os.OpenFile(debugfile, os.O_WRONLY|os.O_CREATE, 0600)
@@ -44,13 +53,6 @@ func initDebugLogger() (lgr *log.Logger) {
 			os.Exit(2)
 		}
 
-		// seek to the end
-		_, err = f.Seek(2, 0)
-		if err != nil {
-			fmt.Fprintf(os.Stderr, "unable to seek to the end of %v: %v\n", debugfile, err)
-			os.Exit(3)
-		}
-
 		// open logger
 		lgr = log.New(f, "", log.LstdFlags)
 	}