Re: [ANNOUNCEMENT] attr 2.4.48-2

[Corinna Vinschen <corinna-cygwin at cygwin dot com>]

On Jan  8 08:36, Brian Inglis wrote:
> On 2019-01-08 04:29, Corinna Vinschen wrote:
> > On Dec 20 23:22, Corinna Vinschen wrote:
> >> On Dec 20 09:03, Brian Inglis wrote:
> >>> On 2018-12-20 03:04, Corinna Vinschen wrote:
> >>>> The following packages have been uploaded to the Cygwin distribution:
> >>>> * attr-2.4.48-2
> >>>> * libattr-devel-2.4.48-2
> >>>> * libattr1-2.4.48-2
> >>> Does this release support listing Windows Alternate Data Streams, as the Linux
> >>> release does with Tuxera NTFS-3G?
> >> libattr only supports reading and writing EAs, it has no capabilities to
> >> read or write ADS.  Ntfs-3g supports the streams_interface=windows
> >> option which allows to read ADS.  This also adds the ntfs.streams.list
> >> EA to a file with named ADS.  So attr/getfattr can only inspect the
> >> ntfs.streams.list EA because the NTFS-3G driver creates them on the fly
> >> when inspecting the file EAs.
> >> tl;dr: No, sorry.  This could only work if Cygwin fakes the
> >> ntfs.streams.list EA per file just like the NTFS-3G driver.
> >> Patches welcome.  Looks like a nice little project if you want to get
> >> your hands dirty.  The functions to handle EAs are pretty
> >> self-sufficiently implemented in ntea.cc.  A little loop about
> >> NtQueryInformationFile(FileStreamInformation) should do it.
> > Would that be something you'd like to work on, Brian?
> 
> Not anything I really knew or cared about, except as a potential attack vector
> or Windows curiosity.

Too bad, but I guess the functionality isn't that important.


Corinna

-- 
Corinna Vinschen
Cygwin Maintainer

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