use single function that does platform specific things

log/log_redirect_arm64.go

@@ -1,23 +1,8 @@
 package log
 
-import (
-	"os"
-	"syscall"
-)
+import "syscall"
 
-// If there are any existing fd's (e.g. we're reopening logs), we rely
-// on garbage collection to clean them up for us.
-func LogRedirectStdOutToFile(logPath string) {
-	path = logPath
-	if logPath == "" {
-		Log.Fatal("Log Path not set")
-	}
-
-	logFile, err := os.OpenFile(logPath, os.O_WRONLY|os.O_APPEND|os.O_CREATE, 0644)
-	if err != nil {
-		Log.Fatal(err)
-	}
-
-	syscall.Dup3(int(logFile.Fd()), 1, 0)
-	syscall.Dup3(int(logFile.Fd()), 2, 0)
-}
+func stdFdToLogFile(logFileFd int) {
+	syscall.Dup3(logFileFd, 1, 0)
+	syscall.Dup3(logFileFd, 2, 0)
+}