delete read-only checking; it must be done by the filesystem layers

merge vfs_lock and vfs_busy; interlock mount points properly

convert VOP_LOCK to vn_lock; add parameters to VOP_UNLOCK

move relookup in from ufs_vnops.c

check for symbolic links after mount points to keep AMD hard mounts happy

check for ENOTDIR before EISDIR in null pathname case

vref -> VREF

add USL's copyright notice

Cleanups for 4.4BSD-Lite

4.4BSD snapshot (revision 8.1); add 1993 to copyright

delete incorrect comment; allow NULL lookup to return parent

names may be up to NAME_MAX

make kernel includes standard

must always check for absolute root, ow a chroot'ed process
could ".." its way past its own local root and go beyond the real root
(i.e. crash the kernel)

added union mounts

who wrote this code in such a retched style!

allow lower layers to consume more of the pathname

delete USES

vnode interface conversion

disallow creation of files in removed directories

use continue rather than goto

lookup converted to new form

lookup converted to new form

refine read-only checking for new NFS

minor optimization