D17816: Support for xattrs on kio copy/move

[Gleb Popov]

arrowd added inline comments.

INLINE COMMENTS

> bruns wrote in file_unix.cpp:625
> Infinite loop on valuelen == 0

Why? `ERANGE` means we need to come up with new value for `valuelen`, so we set it to zero and start over. On the new iteration it gets passed into `fgetxattr`/`extattr_get_fd` to find out sufficient value.

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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