use <sys/xattr.h> rather than <attr/xattr.h>

[pipcet]

This is a bit tentative, since I don't have a Red Hat system to compare right now:

On my Debian system, doesn't exist. does, and provides the right prototypes for xattr.c to use, apparently, so this tiny change makes things compile on an up-to-date sid system.

Mostly, though, this is a success report: with a few trivial changes (to work around the constrained environment of the Debian initrd), I'm able to boot a diskless IPv6-only virtual machine with its (post-initrd) root file system served by diod!

[garlick]

Thanks for your PR. I think it needs to be an autoconf test rather than the direct change though, as I think the old way still is correct on Ubuntu 14.04, RHEL 6, and if it was wrong on RHEL 7 I didn't notice it. I don't mind doing that though, so no need to resubmit the PR.

Glad to hear you've got diskless working! How's the performance and what mount options are you using? Think you might like to work up a wiki howto on it?

[pipcet]

Oh, I'm sorry! I was looking for , which isn't in any Debian package, rather than the correct , which is in libattr1-dev. It works with that package installed, so no Debian special case is necessary.

Sorry for the wasted time.