dead code elimination

add proc pointers to appropriate VOP and vnode operations;
inline expand fgetown/fsetown/fioctl and delete discrete routines

now use single array of descriptors, either within filedesc0 struct
or external; rm OFILE* macros; use resource limit for open files; various
cleanups

more-or-less working with new proc & user structs

have to set offset for SEEK_CUR in F_GETLK too (from scooter@gene.com)

changes to fflags FCNTLCANT => FCNTLFLAGS, FFLAGS/OFLAGS

add POSIX-style byte-level record locking

add dynamically allocated file descriptors

new copyright notice

RETURN => return, remove syscontext.h

p_devtmp => p_dupfd

communicate through p_devtmp instead r_val1;
fdopen returns only error and index, open operates on file table

new system call convention

delete unneeded headers

fdopen: eliminate unnecessary tests, only test for sufficient permissions

Yech! use a "reserved" errno for fdopen

get rid of unnecessary test

have to check mode of descriptor being duped, not the new one

fdopen has to return a special error so that resources get cleaned up

closef now returns errors

merge in vnodes

/dev/fd driver

posix style job control - new process groups

4.3BSD release version

correct no-such-process error