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.

- Add a new vnode op: VOP_PARSEPATH.
- Move namei_getcomponent to genfs_vnops.c and call it genfs_parsepath.
- Add a parsepath entry to every vnode ops table.

VOP_PARSEPATH takes a directory vnode to be searched and a complete
following path and chooses how much of that path to consume. To begin
with, all parsepath calls are genfs_parsepath, which locates the first
'/' as always.

Note that the call doesn't take the whole struct componentname, only
the string. The other bits of struct componentname should not be
needed and there's no reason to cause potential complications by
exposing them.

Add ACL support for FFS. From FreeBSD.

add a genfs method to allow a file system to limit the range of pages
that are given to a single GOP_WRITE() call. needed by ZFS.

branches: 1.5.12;
Add generic genfs_suspendctl() and use it for all file systems.
Layered file systems need work.

branches: 1.4.2; 1.4.4;
Change v7fs to vcache.

branches: 1.3.4;
Add VOP_FALLOCATE and VOP_FDISCARD to every vnode ops table I can
find.

The filesystem ones all call genfs_eopnotsupp - right now I am only
implementing the plumbing and we can implement fallocate and/or
fdiscard for files later.

The device ones call spec_fallocate (which is also genfs_eopnotsupp)
and spec_fdiscard, which dispatches to the device-level op.

The fifo ones all call vn_fifo_bypass, which also ends up being
EOPNOTSUPP.

branches: 1.2.2;
Change all vfsops to use C99 designated initializers.

No functional changes intended.

branches: 1.1.2; 1.1.12; 1.1.16;
7th Edition(V7) File System support. and NetBSD symbolic-link, socket, FIFO extension. see newfs_v7fs(8).

- Add a new vnode op: VOP_PARSEPATH.
- Move namei_getcomponent to genfs_vnops.c and call it genfs_parsepath.
- Add a parsepath entry to every vnode ops table.

VOP_PARSEPATH takes a directory vnode to be searched and a complete
following path and chooses how much of that path to consume. To begin
with, all parsepath calls are genfs_parsepath, which locates the first
'/' as always.

Note that the call doesn't take the whole struct componentname, only
the string. The other bits of struct componentname should not be
needed and there's no reason to cause potential complications by
exposing them.

Add ACL support for FFS. From FreeBSD.

add a genfs method to allow a file system to limit the range of pages
that are given to a single GOP_WRITE() call. needed by ZFS.

branches: 1.5.12;
Add generic genfs_suspendctl() and use it for all file systems.
Layered file systems need work.

branches: 1.4.2; 1.4.4;
Change v7fs to vcache.

branches: 1.3.4;
Add VOP_FALLOCATE and VOP_FDISCARD to every vnode ops table I can
find.

The filesystem ones all call genfs_eopnotsupp - right now I am only
implementing the plumbing and we can implement fallocate and/or
fdiscard for files later.

The device ones call spec_fallocate (which is also genfs_eopnotsupp)
and spec_fdiscard, which dispatches to the device-level op.

The fifo ones all call vn_fifo_bypass, which also ends up being
EOPNOTSUPP.

branches: 1.2.2;
Change all vfsops to use C99 designated initializers.

No functional changes intended.

branches: 1.1.2; 1.1.12; 1.1.16;
7th Edition(V7) File System support. and NetBSD symbolic-link, socket, FIFO extension. see newfs_v7fs(8).

Add ACL support for FFS. From FreeBSD.

add a genfs method to allow a file system to limit the range of pages
that are given to a single GOP_WRITE() call. needed by ZFS.

branches: 1.5.12;
Add generic genfs_suspendctl() and use it for all file systems.
Layered file systems need work.

branches: 1.4.2; 1.4.4;
Change v7fs to vcache.

branches: 1.3.4;
Add VOP_FALLOCATE and VOP_FDISCARD to every vnode ops table I can
find.

The filesystem ones all call genfs_eopnotsupp - right now I am only
implementing the plumbing and we can implement fallocate and/or
fdiscard for files later.

The device ones call spec_fallocate (which is also genfs_eopnotsupp)
and spec_fdiscard, which dispatches to the device-level op.

The fifo ones all call vn_fifo_bypass, which also ends up being
EOPNOTSUPP.

branches: 1.2.2;
Change all vfsops to use C99 designated initializers.

No functional changes intended.

branches: 1.1.2; 1.1.12; 1.1.16;
7th Edition(V7) File System support. and NetBSD symbolic-link, socket, FIFO extension. see newfs_v7fs(8).

add a genfs method to allow a file system to limit the range of pages
that are given to a single GOP_WRITE() call. needed by ZFS.

branches: 1.5.12;
Add generic genfs_suspendctl() and use it for all file systems.
Layered file systems need work.

branches: 1.4.2; 1.4.4;
Change v7fs to vcache.

branches: 1.3.4;
Add VOP_FALLOCATE and VOP_FDISCARD to every vnode ops table I can
find.

The filesystem ones all call genfs_eopnotsupp - right now I am only
implementing the plumbing and we can implement fallocate and/or
fdiscard for files later.

The device ones call spec_fallocate (which is also genfs_eopnotsupp)
and spec_fdiscard, which dispatches to the device-level op.

The fifo ones all call vn_fifo_bypass, which also ends up being
EOPNOTSUPP.

branches: 1.2.2;
Change all vfsops to use C99 designated initializers.

No functional changes intended.

branches: 1.1.2; 1.1.12; 1.1.16;
7th Edition(V7) File System support. and NetBSD symbolic-link, socket, FIFO extension. see newfs_v7fs(8).