From 649b747913d2b289e904b5f1d222af886acd209c Mon Sep 17 00:00:00 2001
From: Paul Eggert <eggert@cs.ucla.edu>
Date: Wed, 24 Nov 2010 23:07:46 -0800
Subject: [PATCH] tar: work around NetBSD and Tru64 symlink incompatibility
 with POSIX

Problem reported by Bruno Haible in
<http://lists.gnu.org/archive/html/bug-gnulib/2010-11/msg00306.html>.
* src/extract.c (maybe_recoverable):  Also treat EFTYPE (if defined)
and ENOTSUP like ELOOP.
---
 src/extract.c | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/src/extract.c b/src/extract.c
index c52c9ce..aaea56e 100644
--- a/src/extract.c
+++ b/src/extract.c
@@ -609,9 +609,18 @@ maybe_recoverable (char *file_name, bool regular, bool *interdir_made)
   switch (e)
     {
     case ELOOP:
+
       /* With open ("symlink", O_NOFOLLOW|...), POSIX says errno == ELOOP,
-	 but FreeBSD through at least 8.1 uses errno == EMLINK.  */
+	 but some operating systems do not conform to the standard.  */
+#ifdef EFTYPE
+      /* NetBSD uses errno == EFTYPE; see <http://gnats.netbsd.org/43154>.  */
+    case EFTYPE:
+#endif
+      /* FreeBSD 8.1 uses errno == EMLINK.  */
     case EMLINK:
+      /* Tru64 5.1B uses errno == ENOTSUP.  */
+    case ENOTSUP:
+
       if (! regular
 	  || old_files_option != OVERWRITE_OLD_FILES || dereference_option)
 	break;
-- 
2.45.2