From 1219879422fa33bf45d1eea0926483821e375bef Mon Sep 17 00:00:00 2001
From: Glenn L McGrath <bug1@ihug.co.nz>
Date: Mon, 19 Apr 2004 12:28:02 +0000
Subject: [PATCH] Dont try and preserve hard links to directories. The linux
 kernel doesnt allow hard links to directories, SUS says its implementation
 specific. cramfs gives empty directories and 0 length files the same node it
 makies it difficult to distinguish from hard links.

---
 libbb/copy_file.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/libbb/copy_file.c b/libbb/copy_file.c
index 7ddb9a23f..68a1ded04 100644
--- a/libbb/copy_file.c
+++ b/libbb/copy_file.c
@@ -242,7 +242,9 @@ int copy_file(const char *source, const char *dest, int flags)
 	}
 
 #ifdef CONFIG_FEATURE_PRESERVE_HARDLINKS
-	add_to_ino_dev_hashtable(&source_stat, dest);
+	if (! S_ISDIR(source_stat.st_mode)) {
+		add_to_ino_dev_hashtable(&source_stat, dest);
+	}
 #endif
 
 end: