X-Git-Url: https://git.cworth.org/git?p=tar;a=blobdiff_plain;f=gnu%2Funlink.c;fp=gnu%2Funlink.c;h=827ea875b7812e345111e0f8a5a02273ce053691;hp=568d2cdce4a58caa2516a5943cfc18dc7f08fa5a;hb=ee168310ec4227174ace489bf5f81f8c2f91cde0;hpb=22f1eb8bc17e5be72dd23d42d6aaa60196ac22e6

diff --git a/gnu/unlink.c b/gnu/unlink.c
index 568d2cd..827ea87 100644
--- a/gnu/unlink.c
+++ b/gnu/unlink.c
@@ -82,6 +82,16 @@ rpl_unlink (char const *name)
         }
     }
   if (!result)
-    result = unlink (name);
+    {
+#if UNLINK_PARENT_BUG
+      if (len >= 2 && name[len - 1] == '.' && name[len - 2] == '.'
+          && (len == 2 || ISSLASH (name[len - 3])))
+        {
+          errno = EISDIR; /* could also use EPERM */
+          return -1;
+        }
+#endif
+      result = unlink (name);
+    }
   return result;
 }