use VOP_ACCESS directly

merge in vnodes

../machine => machine

posix style job control - new process groups

another gratuitous change gone awry

clean up after bostic (remove gratuitous reformatting)

shell scripts can't be setuid

working with pack labels

add ifdefs for dev_bsize (almost working)

changed SHSIZE to MAXINTERP

merge in tahoe support

4.3BSD release version

lint

lint

now can use XTRC again instead of IXMOD

arglist or envlist containing -1 caused panic

Add copyright

change argv[0] for executable scripts to be name of interpretter;
reorder file closes on exec (avoid wedging when a.out is open and CLEX);
split setregs to exec and machine-dependent part;
implement

change argv[0] for executable scripts to be name of interpretter;
reorder file closes on exec (avoid wedging when a.out is open and CLEX);
split setregs to exec and machine-dependent part;
implement high-water mark on file descriptors in use

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must be careful to check bss and data sizes separately to avoid
problems if their sum overflows

make swkill messages more informative

reset signal stack on exec()

(ugly) changes to avoid executing/writing traced text segments
(need regions done right!)

Change to includes. no more ../h

complete revised argument processing -- use copyoutstr to move
arguments from swap space to user space

use copyinstr and copystr (add copyoutstr later)