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From: "Alexey V. Vissarionov" <gremlin@altlinux.org>
To: ALT Linux Team development discussions <devel@lists.altlinux.org>
Subject: Re: [devel] UID_MIN/GID_MIN 500 -> 1000
Date: Fri, 28 Apr 2023 08:24:12 +0300
Message-ID: <20230428052412.GA11798@altlinux.org> (raw)
In-Reply-To: <20230426102950.GA24412@altlinux.org>

Good ${greeting_time}!

On 2023-04-26 13:29:51 +0300, Dmitry V. Levin wrote:

 >>>> Есть мысль увеличить UID_MIN/GID_MIN по умолчанию до 1000
 >>> Еще бы хорошо перейти на uid=gid=65534 для nobody
 >>> https://github.com/systemd/systemd/blob/main/docs/UIDS-GIDS.md
 >> А вот этого делать точно не надо, так как 65534 - совершенно
 >> валидный UID из диапазона [UID_MIN;4294967294].
 > overflowgid & overflowuid
 > Some filesystems only support 16-bit UIDs and GIDs, although in
 > Linux UIDs and GIDs are 32 bits. When one of these filesystems
 > is mounted with writes enabled, any UID or GID that would exceed
 > 65535 is translated to a fixed value before being written to
 > disk. These sysctls allow you to change the value of the fixed
 > UID and GID. The default is 65534.

В каком году написан этот текст и для каких ФС это актуально?
Это не риторический вопрос, это действительно нужно проверить.

Если речь о каких-нибудь атавизмах наподобие CONFIG_MINIX_FS -
проще выкинуть их из ядра, чем морочиться с подобными костылями.


-- 
Alexey V. Vissarionov
gremlin ПРИ altlinux ТЧК org; +vii-cmiii-ccxxix-lxxix-xlii
GPG: 0D92F19E1C0DC36E27F61A29CD17E2B43D879005 @ hkp://keys.gnupg.net


  parent reply	other threads:[~2023-04-28  5:24 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-04-20 11:15 Mikhail Efremov
2023-04-20 13:30 ` Alexey Shabalin
2023-04-21 12:54   ` Alexey V. Vissarionov
2023-04-26 10:29     ` Dmitry V. Levin
2023-04-26 12:09       ` Alexey Shabalin
2023-04-28  5:24       ` Alexey V. Vissarionov [this message]
2023-04-20 16:23 ` Leonid Krivoshein
2023-04-20 16:30   ` Ivan A. Melnikov
2023-04-20 16:39     ` Mikhail Efremov
2023-04-20 16:47     ` Ruslandh
2023-04-21  8:41       ` Mikhail Efremov
2023-04-20 18:51 ` Vladimir D. Seleznev
2023-04-21  8:38     ` Mikhail Efremov
2023-04-21 12:09       ` Alexey Gladkov
2023-04-21 12:36         ` Vladislav Zavjalov
2023-04-21 12:59         ` Alexey V. Vissarionov
2023-04-20 21:43 ` Dmitry V. Levin
2023-04-21  8:37   ` Mikhail Efremov
2023-04-21  9:17     ` Sergey V Turchin
2023-04-21 12:50 ` Alexey V. Vissarionov
2023-04-25 16:43   ` Mikhail Efremov

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