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Date:	Mon, 28 Dec 2009 18:00:36 +0100
From:	Corinna Vinschen <corinna-cygwin AT cygwin DOT com>
To:	cygwin AT cygwin DOT com
Subject:	Re: [ANNOUNCEMENT] New: {attr/libattr-devel/libattr1}-2.4.43-1
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On Dec 28 08:02, Chris Sutcliffe wrote:
> > "attr" is a set of tools for manipulating extended attributes on
> > filesystem objects, in particular getfattr(1) and setfattr(1).  An
> > attr(1) command is also provided which is largely compatible with the
> > SGI IRIX tool of the same name.
> 
> If I understand the manpage correctly, doing a 'getfattr -d <path>'
> should dump the extended attributes of the files in the supplied path.
>  When I try this on any path I supply, getfattr simply returns with no
> output to stdout.
> 
> I'm assuming that is because there are no extended attributes
> associated with any of the files in the paths I've tested with?

Very likely.

Try this:

  $ touch xyz
  $ attr -s foo -V bar xyz
  Attribute "foo" set to a 3 byte value for xyz:
  bar
  $ attr -l xyz
  Attribute "foo" has a 3 byte value for xyz
  $ attr -g foo xyz
  Attribute "foo" had a 3 byte value for xyz:
  bar
  
  And now for a small surprise:

  $ getfattr -d xyz
  # file: xyz
  user.foo="bar"

  $ setfattr -n foo -v baz xyz
  setfattr: xyz: Operation not supported
  $ setfattr -n user.foo -v baz xyz
  $ getfattr -d xyz
  # file: xyz
  user.foo="baz"

  $ attr -g foo xyz
  Attribute "foo" had a 3 byte value for xyz:
  baz

See `man 5 attr'.  All NTFS/Samba EAs are treated as extended *user*
attributes.  namespace.  On Cygwin only user EAs are supported and
mapped to NTFS/Samba EAs without the "user." prefix.


Corinna

-- 
Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Project Co-Leader          cygwin AT cygwin DOT com
Red Hat

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