D17816: Support for xattrs on kio copy/move

[Gleb Popov]

arrowd added inline comments.

INLINE COMMENTS

> dfaure wrote in ConfigureChecks.cmake:12
> I'm talking about the implementation of fileSystemSupportsACL in kpropertiesdialog.cpp, which uses getxattr.
> But now that I take another look at it, I see that it's already implemented on FreeBSD, without the use of extattr, it uses statfs instead.
> So I think I was wrong, this part is fine.
> 
> I guess the only thing that's a bit weird is that kio_file's attr code (unrelated to ACLs) relies on FindACL linking to the right lib (on Linux). It would be cleaner if the attr stuff was separate. But no big deal I guess.

There are other parts of code that are guarded with `HAVE_POSIX_ACL`s, and these aren't enabled ATM for FreeBSD. So, the change is needed and I'm willing to implement it.

I plan to move `set(HAVE_POSIX_ACL ...)` part into `FindACL.cmake` and use this module everywhere. Does that sound OK?

REVISION DETAIL
  https://phabricator.kde.org/D17816

To: arrowd, dfaure, chinmoyr, bruns, #frameworks, tmarshall, usta, cochise
Cc: usta, scheirle, tmarshall, arrowd, cfeck, bruns, phidrho, dhaumann, funkybomber, abika, pino, davidedmundson, ngraham, atha.kane, spoorun, nicolasfella, kde-frameworks-devel, LeGast00n, cblack, michaelh
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