Merge autofs support from: Tomohiro Kusumi
XXX: Does not work yet

Move proc_lock into the data segment. It was dynamically allocated because
at the time we had mutex_obj_alloc() but not __cacheline_aligned.

autofs: Make autofs(5) timeout messages include affected process name and PID

Sync warning message with FreeBSD and DragonFlyBSD.
taken-from: FreeBSD

autofs: Make /dev/autofs cdevsw functions static

Also less confusing since autofs vnops also has autofs_{open,close} in NetBSD.

branches: 1.3.4;
fix module attachment and cdevsw

Include <sys/atomic.h> for the atomic funtions used in here.

Merge autofs support from: Tomohiro Kusumi
XXX: Does not work yet

sys/fs/autofs: Remove unused APRINTF macro

Remove a debug print macro (originates from DragonFly autofs)
I had intentionally kept at the time.

autofs: Remove unused autofs_node::an_vnode_lock

Unlike FreeBSD and DragonFlyBSD, this is unused in NetBSD.

autofs: u_int -> unsigned int

autofs: Drop unused autofs_mount field which originates from FreeBSD

Taken-from: DragonFlyBSD

branches: 1.1.4;
Merge autofs support from: Tomohiro Kusumi
XXX: Does not work yet

Merge autofs support from: Tomohiro Kusumi
XXX: Does not work yet

autofs: Fix a comment on autofs_args

mount_autofs(8) also uses this.
mount_autofs(8) was added by NetBSD as an optional command (not needed to use autofs).

branches: 1.2.4;
support getargs, fix flush, fix mutex_destroy

Merge autofs support from: Tomohiro Kusumi
XXX: Does not work yet

driver(9): devsw_detach never fails. Make it return void.

Prune a whole lotta dead branches as a result of this. (Some logic
calling this is also wrong for other reasons; devsw_detach is final
-- you should never have any reason to decide to roll it back. To be
cleaned up in subsequent commits...)

XXX kernel ABI change to devsw_detach signature requires bump

autofs: Silence down a warning which should really be a debug message

taken-from: FreeBSD

Use the module subsystem's ability to process SYSCTL_SETUP() entries to
automate installation of sysctl nodes.

Note that there are still a number of device and pseudo-device modules
that create entries tied to individual device units, rather than to the
module itself. These are not changed.

VFS_VGET(), VFS_ROOT(), VFS_FHTOVP(): give them a "int lktype" argument, to
allow us to get shared locks (or no lock) on the returned vnode. Matches
FreeBSD.

branches: 1.8.2;
autofs: Use NULLVP for NULL vnode

I originally used NULL for NetBSD autofs, but it got mixed up with
NULLVP when merged with NetBSD.

autofs: Don't calculate dirent reclen twice

Taken-from: DragonFlyBSD

autofs: Fix change by r1.3 "prevent assert on unmount."

Must delete all nodes on unmount, otherwise automounts with >1 level of directories can't be deleted.
taken-from: FreeBSD and DragonFlyBSD

autofs: Whitespace fix

branches: 1.4.4;
support getargs, fix flush, fix mutex_destroy

prevent assert on unmount.

fix module attachment and cdevsw

Merge autofs support from: Tomohiro Kusumi
XXX: Does not work yet

s/partcular/particular/ in comment.

Handle seek operations on autofs mountpoints.

branches: 1.8.8;
Use genfs_pathconf for VOP_PATHCONF.
Fixes bin/57103.

- 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.

branches: 1.6.6;
Add ACL support for FFS. From FreeBSD.

VFS_VGET(), VFS_ROOT(), VFS_FHTOVP(): give them a "int lktype" argument, to
allow us to get shared locks (or no lock) on the returned vnode. Matches
FreeBSD.

branches: 1.4.2;
autofs: Use NULLVP for NULL vnode

I originally used NULL for NetBSD autofs, but it got mixed up with
NULLVP when merged with NetBSD.

autofs: Remove unused autofs_node::an_vnode_lock

Unlike FreeBSD and DragonFlyBSD, this is unused in NetBSD.

autofs: Don't calculate dirent reclen twice

Taken-from: DragonFlyBSD

branches: 1.1.4;
Merge autofs support from: Tomohiro Kusumi
XXX: Does not work yet

Merge autofs support from: Tomohiro Kusumi
XXX: Does not work yet