O_XATTR support in FreeBSD?

[Lionel Cons]

On 27 November 2013 05:52, Tim Kientzle <tim at kientzle.com> wrote:
>
> On Nov 26, 2013, at 1:51 AM, Cedric Blancher <cedric.blancher at gmail.com> wrote:
>
>> 5. Support for tar and pax is already there. Its described in
>> Solaris's fsattr man page, they use a extended header with filename
>> /dev/null (to prevent older tar versions from tripping over the new
>> headers) and then have a named attribute header which describes the
>> attributes names and flags.
>
> There are quite a few alternative approaches for storing
> extended attributes in tar and pax files.

But this discussion is *not* about extended attributes, this
discussion is about Alternate Data Streams. Unfortunately the O_XATTR
discussion somehow started to cover the Linux "extended attribute
system", which is utterly useless in the intended use cases (as said,
no access through normal POSIX read(), write(), mmap(), no unlimited
size, no sparse data support (aka SEEK_HOLE, SEEK_DATA) etc etc).

Lionel