* lib/fileutils.rb (fu_same?): check by inode instead of path name, to detect two hard links pointing to the same content.

* test/fileutils.rb: did not create correctly looped symlinks.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@4980 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 3 insertions, 29 deletions

diff --git a/lib/fileutils.rb b/lib/fileutils.rb
index 94a8f5e939..9b50aec919 100644
--- a/lib/fileutils.rb
+++ b/lib/fileutils.rb
@@ -739,35 +739,9 @@ module FileUtils
   end
 
   def fu_same?( a, b )
-    fu_resolve_symlink(a) == fu_resolve_symlink(b)
-  end
-
-  def fu_resolve_symlink( path, limit = 128 )
-    raise Errno::ELOOP, "too many levels of symlic links: #{path}" if limit < 0
-    if File.symlink?(path)
-    then fu_resolve_symlink(fu_readlink(File.expand_path(path)), limit-1)
-    else path
-    end
-  end
-
-  def fu_readlink( path )
-    dest = File.readlink(path)
-    if absolute_path?(dest)
-    then dest
-    else File.dirname(File.expand_path(path)) + '/' + dest
-    path = File.readlink(path)
-    end
-  end
-
-  def absolute_path?( path )
-    if have_drive_letter?
-    then %r<\A([a-z]:)?/> === path
-    else %r<\A/> === path
-    end
-  end
-
-  def have_drive_letter?
-    File::ALT_SEPARATOR ? true : false
+    File.stat(a).ino == File.stat(b).ino
+  rescue Errno::ENOENT
+    return false
   end
 
   def fu_stream_blksize( *streams )