So, a quick summary of the problems so far:

 1) Need a way to read a given va for a process, without resorting to
    frobbing vm internals.

    Possible solution: add

	sysctl(CTL_KERN, KERN_PROC_VA, pid, va, &type, &offset);

 2) Need a way to get the address of the ps_strings struct for a given
    process - this can vary per process on a machine running both 32 and
    64 bit processes.

    Possible solutions: add
	
	sysctl(CTL_KERN, KERN_PROC_PSADDR, pid, &va);

    or keep address of ps_strings in struct proc and pass back inside
    struct kinfo_proc2.

 3) Need the size of "char **" for same reasons as 2).

    Is there an easy way to tell if a process is a 32 or 64 bit process?

 4) Need a way to convert from a machine pointer type to u_int64_t.

    Possble solution:

	#define PTRTOUINT64(foo)  ((u_int64_t)(uintptr_t)(foo))

Is this a reasonable summary?  Any better answers than what I have
suggested?

Simon.