new copyright notice

RETURN => return, remove syscontext.h

p_devtmp => p_dupfd; eliminate u.u_error from RETURN macro

use p_devtmp instead of r_val1 for fdopen

revoke has but one argument

have to check whether parent directory is "." when releasing

creat becomes ocreat and ifdef COMPAT_43; bug fix in revoke

VOP_ABORTOP is no longer responsible for unlocking and vreleing vnodes

new calling convension for system calls

check error return from sync'ing on unmount; add flags arg to revoke

mount structure prefixes go from m_ to mnt_ and M_ to MNT_

vattr_null => VATTR_NULL

add quotactl system call;
use vfs_busy to single thread sync and avoid races with unmount

eliminate longjmp from the kernel (for karels)

get rid of unneeded header files

statfs structure is now cached in the mount table entry

readdir takes a new flag to indicate end-of-file

add mkfifo system call

do not change mount flags if underlying filesystem returns error (from noemi)

do not link new mount points into mount list until the underlying
filesystem has successfully mounted; skip locked mount points when syncing

fix reference bug in fchdir

v_count => v_usecount

debugging, check lock count on exit

more fully check the type field

have to invalidate any buffer references before checking for busy status