From: "Dmitry V. Levin" <ldv@altlinux.org>
To: ALT Linux Sisyphus discussion list <sisyphus@lists.altlinux.org>
Subject: Re: [sisyphus] coreutils, who )
Date: Tue, 16 May 2006 18:35:56 +0400
Message-ID: <20060516143556.GC6226@basalt.office.altlinux.org> (raw)
In-Reply-To: <44697968.50607@yandex.ru>
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On Tue, May 16, 2006 at 10:04:08AM +0300, Artem wrote:
> Michael A. Kangin wrote:
> > On 16 мая 2006 01:37 Artem <x-console@yandex.ru> wrote:
> >
> >>Да, я уже нашел _одну_ строчку в coreutils-xxx/libs/readutmp.c из-за
> >>которой эта вещь происходит.
> >
> Эта информация скорее уже к coreutils@ . Описанное поведение who (см.
> тред) аналогично проявляется и в users.
> Предпосылки:
> в coreutils-5.94/lib/readutmp.c , line 107, добавили вызов ф-ции:
> <skip>
> if (desirable_utmp_entry (u, options))
> <skip>
> для отбора записей utmp по определенным критериям
>
> Причина:
> в coreutils-5.94/lib/users.c , line 138,
> <skip>
> switch (argc - optind)
> {
> case 0: /* users */
> users (UTMP_FILE, READ_UTMP_CHECK_PIDS);
> ^^^^^^^^^^^^^^^^^^^^^
> вызов users без параметров,
> параметр READ_UTMP.... == 1
> break;
>
> case 1: /* users <utmp file> */
> users (argv[optind], 0);
> ^^^^^^^^^^^^^^^^^^^^^^^
> а вот здесь при users <utmp file>
> подставляется "0" и выводится все записи.
>
> break;
> <skip>
>
> Аналогично в coreutils-5.94/src/who.c, line 815
> <skip>
> case 0: /* who */
> who (UTMP_FILE, READ_UTMP_CHECK_PIDS);
> break;
>
> case 1: /* who <utmp file> */
> who (argv[optind], 0);
> break;
>
> <skip>
>
> Спрашивается:
> а) зачем добавлено такое поведение?
> б) почему не сказано ничего в man ?
> в) это бага? Или фича?
2005-03-30 Paul Eggert <eggert@cs.ucla.edu>
* src/pinky.c (short_pinky): Adjust to read_utmp signature change.
* src/uptime.c (uptime): New arg OPTIONS. All uses changed.
* src/users.c (users): Likewise.
* src/who.c (who): Likewise.
* src/uptime.c (main): Check PIDs when invoked with zero arguments.
* src/users.c (main): Likewise.
* src/who.c (main): Likewise. Also with two arguments.
Omit duplicate code in 2-arg case.
(UT_PID): Moved to ../lib/readutmp.h.
--
ldv
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next prev parent reply other threads:[~2006-05-16 14:35 UTC|newest]
Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-05-09 21:40 [sisyphus] ничего не понимаю... ( powersave ) Artem
2006-05-10 10:07 ` Anton Farygin
2006-05-10 16:21 ` Anton Farygin
2006-05-10 16:47 ` Artem
2006-05-11 6:03 ` Anton Farygin
2006-05-11 10:41 ` Artem
2006-05-11 12:27 ` Anton Farygin
2006-05-15 14:12 ` Artem
2006-05-15 15:44 ` Anton Farygin
2006-05-15 18:05 ` Artem
2006-05-15 18:28 ` Anton Farygin
2006-05-15 20:27 ` Michael A. Kangin
2006-05-15 21:37 ` [sisyphus] coreutils, who ) Artem
2006-05-16 2:24 ` Michael A. Kangin
2006-05-16 7:04 ` Artem
2006-05-16 8:13 ` Anton Farygin
2006-05-16 13:39 ` Dmitry V. Levin
2006-05-16 14:01 ` Anton Farygin
2006-05-16 14:28 ` Dmitry V. Levin
2006-05-16 17:19 ` Anton Farygin
2006-05-21 8:33 ` [sisyphus] /usr/lib/powersave/wttyhx -> /usr/bin/wttyhx? Michael Shigorin
2006-05-22 5:02 ` Anton Farygin
2006-05-16 14:35 ` Dmitry V. Levin [this message]
2006-05-16 20:39 ` [sisyphus] coreutils, who ) Artem
2006-05-16 21:06 ` Dmitry V. Levin
2006-05-16 21:31 ` Artem
2006-05-16 21:36 ` Artem
2006-05-16 22:12 ` Michael A. Kangin
2006-05-16 22:16 ` Dmitry V. Levin
2006-05-16 23:46 ` Ivan Adzhubey
2006-05-16 23:59 ` Dmitry V. Levin
2006-05-17 22:25 ` Ivan Adzhubey
2006-05-17 22:53 ` Dmitry V. Levin
2006-05-17 23:13 ` Artem
2006-05-17 5:51 ` Anton Farygin
2006-05-16 22:14 ` Dmitry V. Levin
2006-05-16 22:23 ` Artem
2006-05-16 23:05 ` Dmitry V. Levin
2006-05-17 6:15 ` Artem
2006-05-17 23:12 ` Artem
2006-05-17 23:26 ` Dmitry V. Levin
2006-05-18 5:26 ` Artem
2006-05-21 8:32 ` [sisyphus] [JT] " Michael Shigorin
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