Re: silent semantic changes with reiser4
From: Linus Torvalds
Date: Sun Aug 29 2004 - 13:00:21 EST
On Sun, 29 Aug 2004, Hans Reiser wrote:
> >
> >Realize that openat() works independently of any special streams, it's
> >fundamentally a "look up name starting from this file" (rather than
> >"starting from root" or "starting from cwd").
>
> well, isn't that namespace fragmentation by definition?
No.
There's no difference between
fd = open("/usr/bin/yes", O_RDWR);
and
dirfd = open("/usr/bin", O_RDONLY | O_DIRECTORY);
fd = openat(dirfd, "yes", O_RDWR);
apart from error checking and permissions..
No new namespace.
Only O_XATTR implies a "namespace change".
Linus
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