re: misc/58515 (struct acct at acct(5) man page is different from /usr/include/sys/acct.h)

[matthew green <mrg%eterna23.net@localhost>]

riastradh%NetBSD.org@localhost writes:
> Synopsis: struct acct at acct(5) man page is different from /usr/include/sys/acct.h
>
> State-Changed-From-To: open->feedback
> State-Changed-By: riastradh%NetBSD.org@localhost
> State-Changed-When: Tue, 08 Oct 2024 23:29:15 +0000
> State-Changed-Why:
> Fixed in HEAD?  Needs pullups?

i've been meaning to say... acct(5) was affected in netbsd 6.x
and beyond, as the size of time_t *and* dev_t members grew, but
there is no compat code etc:

struct acct {
...
        time_t    ac_btime;     /* starting time */
...
        dev_t     ac_tty;       /* controlling tty */


if we're gonna consider fixing this, i'd consider doing it as
part of an 3rd change that bumped the sizes of various things
that are kinda limited in 2024 (vs 1984):

/*
 * Accounting structures; these use a comp_t type which is a 3 bits base 8
 * exponent, 13 bit fraction ``floating point'' number.  Units are 1/AHZ
 * seconds.
 */
typedef uint16_t comp_t;
...
        comp_t    ac_utime;     /* user time */
        comp_t    ac_stime;     /* system time */
        comp_t    ac_etime;     /* elapsed time */
...
        comp_t    ac_io;        /* count of IO blocks */

limited in both ways:

- *tiny* cpu time is far more possible now
- *massive threaded* cpu time is far more possible now.


.mrg.