From mboxrd@z Thu Jan  1 00:00:00 1970
From: Christoph Hellwig <hch@infradead.org>
Subject: Re: interface to ask is a file is hidden
Date: Fri, 10 Oct 2008 18:01:56 -0400
Message-ID: <20081010220156.GA25396@infradead.org>
References: <641322f90810101222p3ff36ac3va9057b9958d2abf2@mail.gmail.com> <20081010192104.GD19500@unused.rdu.redhat.com> <20081010193503.GE23734@samba1> <641322f90810101300v3ab5fc15hb20fca0374ebe4b4@mail.gmail.com> <20081010215722.GG8645@mit.edu>
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Cc: Nicol? Chieffo <84yelo3@gmail.com>, Jeremy Allison <jra@samba.org>,
	Alexander Larsson <alexl@redhat.com>,
	Szabolcs Szakacsits <szaka@ntfs-3g.org>,
	Josef Bacik <jbacik@redhat.com>, linux-fsdevel@vger.kernel.org
To: Theodore Tso <tytso@mit.edu>
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On Fri, Oct 10, 2008 at 05:57:22PM -0400, Theodore Tso wrote:
> The best you might be able to get is an interface that allows an
> application to get or set the hidden attribute if is supported --- but
> the application must be willing to accept a permission denied error
> (some filesystems may only permit people with certain access right or
> on some ACL to set the attribute), or a "operation not supported"
> failure, for those filesystems that simply have not concept of "hidden
> file".

Yes.  he best thing you could do is to add support for the
FAT_IOCTL_GET_ATTRIBUTES/FAT_IOCTL_SET_ATTRIBUTES ioctls to other
windows-heritage filesystems.  Feel free to submit patches.