Re: 'poweroff' seems to (only) halt as of main-n267841-0b3f9e435f2b

On Tue, 30 Jan 2024 08:12:23 -0800
David Wolfskill <david@catwhisker.org> wrote:

> On Tue, Jan 30, 2024 at 03:49:54PM +0000, Gary Jennejohn wrote:
> > ...
> > I use 'shutdown -p now' and it's never failed to power down my computers.
> > ....
>
> I could say the same about "poweroff", up to the main-n267808-197944948e62
> -> main-n267841-0b3f9e435f2b transition.  And I probably wouldn't
> have mentioned anything, except that each of the 3 machines (one
> headless build machine; 2 laptops) I tested exhibited the same change.
>
> Note, too, from src/sbin/shutdown/shutdown.c:
>
>         /*
>          * Test for the special case where the utility is called as
>          * "poweroff", for which it runs 'shutdown -p now'.
>          */
>         if ((p = strrchr(argv[0], '/')) == NULL)
>                 p = argv[0];
>         else
>                 ++p;
>         if (strcmp(p, "poweroff") == 0) {
>                 if (getopt(argc, argv, "") != -1)
>                         usage((char *)NULL);
>                 argc -= optind;
>                 argv += optind;
>                 if (argc != 0)
>                         usage((char *)NULL);
>                 dopower = 1;
>                 offset = 0;
>                 (void)time(&shuttime);
>                 goto poweroff;
>
> (So I believe we are referring to the same code paths, whether by
> "shutdown -p now" or "poweroff".)
>

Interesting, I wasn't aware of this.  Reading shutdown(8) I see that
poweroff is equivalent to shutdown -p now.  Thanks!

--
Gary Jennejohn