I'm probably jumping the gun, but what the heck, this is -current.

Turn off setgid-kmem for /bin/ps, it's now quite functional without it.
ps no longer needs /dev/*mem or /proc.  (It will still use some /proc
files if they are available for -e, but it's not required, so it'll
happily run in a jail or chroot).

The proc stats are now part of eproc (obtained via sysctl) and no longer
needs to beat up the u-page reading code and the problems with that.

This also has the side effect of disabling 'ps -e' for normal users
*EXCEPT* when looking at their own processes.  ie: they can see
environments in processes with their uid, enforced by the ownership of
/proc/*/mem.  Root can still see them all, as it can open all /proc/*/mem.

bin/ps/Makefile

@@ -12,7 +12,7 @@ SRCS=	fmt.c keyword.c nlist.c print.c ps.c
 CFLAGS+=-I${.CURDIR}/../../sys -DLAZY_PS
 DPADD=	${LIBM} ${LIBKVM}
 LDADD=	-lm -lkvm
-BINGRP=	kmem
-BINMODE=2555
+#BINGRP=	kmem
+#BINMODE=2555
 
 .include <bsd.prog.mk>