From a3f9c4009a959d4301b250c6c740c429ae2a40dc Mon Sep 17 00:00:00 2001
From: rhysd <lin90162@yahoo.co.jp>
Date: Thu, 4 Jan 2018 00:00:41 +0900
Subject: [PATCH] resolve a symlink

Current implementation does not consider the case where the target
executable is run via symlink. If the executable is a symlink, it should
replace the linked executable file, not the symlink itself.
---
 apply.go | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/apply.go b/apply.go
index b26dae1..c5f978c 100644
--- a/apply.go
+++ b/apply.go
@@ -269,7 +269,17 @@ func (o *Options) SetPublicKeyPEM(pembytes []byte) error {
 
 func (o *Options) getPath() (string, error) {
 	if o.TargetPath == "" {
-		return osext.Executable()
+		exe, err := osext.Executable()
+		if err != nil {
+			return "", err
+		}
+
+		exe, err = filepath.EvalSymlinks(exe)
+		if err != nil {
+			return "", err
+		}
+
+		return exe, nil
 	} else {
 		return o.TargetPath, nil
 	}