On Sun, 8 Jul 2007, Linus Torvalds wrote:
>
> This would seem to be the minimal change, and I think it's right.
Side note: I considered just changing do_utimes() to use
ATIME_SET/MTIME_SET instead, which would simplify the logic a lot..
But it turns out that the semantics for A/MTIME_SET is that only the owner
of the file can do that. So the "!times" case is simply _fundamentally_
different from a permissions check standpoint, and there we have to check
for "writable" rather than anything else (although ownership will override
it).
So rather than simplify the thing, I had to add code. Oh, well.
I do think that it would be even nicer to just have a function that fills
in the "struct nameidata" from the dfd. I think we should be able to: the
"struct file" really does have the "f_path" thing with both dentry and mnt
information, and that would clean up that whole ugly "filepointer-vs-nd"
thing a lot.
That would be an "Al cleanup", though. What do you think, Al?
Linus
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