Stop abusing ufs inodes and with it the ufs_ihash.
Instead extend fusefs_node with the few required fields.
Tested by kirill@ with input from miod@
OK beck@

Use struct stat for storing attributes in fusebufs, because using struct
vattr in userspace is suboptimal as some related helpers are not
available, e.g. VATTR_NULL() and IFTOVT(). The conversion is

Use struct stat for storing attributes in fusebufs, because using struct
vattr in userspace is suboptimal as some related helpers are not
available, e.g. VATTR_NULL() and IFTOVT(). The conversion is now done in
the kernel where it belongs. As a side effect the <sys/vnode.h> include
can be removed from libfuse.

tweaks and ok guenther

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Do not rely on the fact that sys/vnode.h includes all the world
through uvm/uvm.h and add proper includes for function definitions.

ok syl@

Do not complain if release is not implemented in fuse client.

ok millert@.

Add some missing check to know if the communication channel with
libfuse is still open before sending fusebufs.

ok sthen@

use printf(9) consistently in FUSE

Introduce fb_delete() helper and use it in FUSE code.

Rework fuseread() and fusewrite().

Remove debug printfs.

add a bunch of files for ISC-licensed FUSE support. ok beck deraadt
from Sylvestre Gallon ccna.syl gmail.com. Many thanks to Sylvestre for
all the hard work.