miscfs/fifofs/fifo.h: New home for extern fifo_vnodeop_opv_desc.

Add include guard and fix missing includes while here too.

Use macros for the canned parts of device and fifo vnode op tables.

Add GENFS_SPECOP_ENTRIES and GENFS_FIFOOP_ENTRIES macros that contain
the portion of the vnode ops table declaration that is
(conservatively) the same in every fs. Use these in every fs that
supports devices and/or fifos with separate ops tables.

Note that ptyfs works differently (it has one type of vnode with
open-coded dispatch to the specfs code, which I haven't changed in
this commit) and rump/librump/rumpvfs/rumpfs.c has an indirect dynamic
dispatch that already does more or less the same thing, which I also
haven't changed.

Also note that this anticipates a few bits in the next changeset here
and there, and adds missing but unreachable calls in some cases (e.g.
most fses weren't defining whiteout on devices and fifos, but it isn't
reachable there), and it changes parsepath on devices and fifos to
genfs_badop from genfs_parsepath (but it's not reachable there
either).

It appears that devices in kernfs were missing kqfilter, so it's
possible that if you try to use kqueue on /kern/rootdev that it'll
explode.

And finally note that the ops declaration tables aren't
order-dependent. (Other than vop_default_desc has to come first.)
Otherwise this wouldn't work.

branches: 1.26.76;
Stop exposing fifofs internals and leave only fifo_vnodeop_p visible.

branches: 1.25.10; 1.25.30; 1.25.32;
Remove VOP_LEASE. Discussed on tech-kern.

branches: 1.24.46; 1.24.52;
merge ktrace-lwp.

merge yamt-vop branch. remove following VOPs.

VOP_BLKATOFF
VOP_VALLOC
VOP_BALLOC
VOP_REALLOCBLKS
VOP_VFREE
VOP_TRUNCATE
VOP_UPDATE

branches: 1.22.2;
Remove __P()

branches: 1.21.12;
Change fifo_{un,}lock and fifo_islocked to use the "real" lock
ops, not the nolock variants. Should have no real impact as according
to mkid, we only use fifo_vnodeop_entries, via fifo_vnodeop_p,
for selective operations on fifos. All the fifo users use the native
file system's locking routines.

Removes one use of genfs_nolock and friends.

Move UCB-licensed code from 4-clause to 3-clause licence.

Patches provided by Joel Baker in PR 22364, verified by myself.

branches: 1.19.6;
merge kqueue branch into -current

kqueue provides a stateful and efficient event notification framework
currently supported events include socket, file, directory, fifo,
pipe, tty and device changes, and monitoring of processes and signals

kqueue is supported by all writable filesystems in NetBSD tree
(with exception of Coda) and all device drivers supporting poll(2)

based on work done by Jonathan Lemon for FreeBSD
initial NetBSD port done by Luke Mewburn and Jason Thorpe

add a VOP_PUTPAGES method for all the filesystems that don't have pages,
just unlock the interlock.

Add fifo_putpages() placebo so that the vnode's uobj is unlocked.

branches: 1.16.24; 1.16.26; 1.16.28;
Per POSIX, fail with EINVAL if advisory locking is attempted on a file type
that doesn't support it, rather than using a homegrown EBADF or EOPNOTSUPP.

Always include fifos; "not an option any more".

defopt for options FIFO

Merge with Lite2 + local changes

Implement poll(2).

Add a set of generic file system operations that most file systems use.
Also, fix some time stamp bogosities.

miscfs prototype changes

Turn lease_check() into a vnode op, per CSRG.

New RCS ID's, take two. they're more aesthecially pleasant, and use 'NetBSD'

Update to 4.4-Lite fs code, with local changes.

fix return type for fifo_print

Changes to VFS readdir semantics
NFS changes for better cookie support
ISOFS changes for better Rockridge support and support for generation numbers

ANSIfications - lots of function prototyping.

add rcs ids as necessary, and also clean up headers

Add consistent multiple-inclusion protection.

branches: 1.1.1;
Initial revision