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15.20.9228.009; Mon, 20 Oct 2025 05:14:46 +0000 Message-ID: <6d4ae9fd-b708-4b22-a170-68af462a7b39@windriver.com> Date: Mon, 20 Oct 2025 13:14:41 +0800 User-Agent: Mozilla Thunderbird Subject: Re: [OE-core][PATCH V3 1/2] base-passwd: add clock group To: Alexander Kanavin Cc: Peter Kjellerstedt , "openembedded-core@lists.openembedded.org" References: <20251016084700.1537381-1-Qi.Chen@windriver.com> Content-Language: en-US From: ChenQi In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed X-ClientProxiedBy: TYCP301CA0039.JPNP301.PROD.OUTLOOK.COM (2603:1096:400:380::16) To PH0PR11MB5611.namprd11.prod.outlook.com (2603:10b6:510:ed::9) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: PH0PR11MB5611:EE_|CY8PR11MB6842:EE_ X-MS-Office365-Filtering-Correlation-Id: 895a460d-6bbe-43ee-c122-08de0f9795fa X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|376014|1800799024|366016; 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59K40mRJ1122758 List-Id: X-Webhook-Received: from li982-79.members.linode.com [45.33.32.79] by aws-us-west-2-korg-lkml-1.web.codeaurora.org with HTTPS for ; Mon, 20 Oct 2025 05:14:53 -0000 X-Groupsio-URL: https://lists.openembedded.org/g/openembedded-core/message/225095 On 10/18/25 02:22, Alexander Kanavin wrote: > On Fri, 17 Oct 2025 at 04:56, Chen Qi via lists.openembedded.org > wrote: >>> Why does this have to go here. Why can't you just update the >>> GROUPADD_PARAM:${PN} in the systemd recipe to create the clock group: >>> >>> GROUPADD_PARAM:${PN} =3D "-r systemd-journal; -r clock;" >>> >>> That way it is only created if systemd is actually used. >> I consider this clock similar to the 'wheel' and 'kvm' groups. 'wheel' >> and 'kvm' groups are added here, so I put 'clock' group here. >> >> From my understanding, such groups are likely to be used by other >> applications (recipes). You can see this from the original commit: >> https://github.com/systemd/systemd/commit/af96ccfc24bc4803078a46b4ef2c= deb >> >> It's possible that applications such as linuxptp will use this clock >> group. What systemd (udev) does is to change the device's group to >> 'clock'. This means applications using those devices could be put in >> 'clock' group to be granted access. > But how do classic binary distributions handle this? Can you research > where e.g. Fedora or Debian create this group? We could probably > follow that, and avoid having to carry an Inappropriate patch. Maybe > base-passwd upstream already has a fix? > > Alex Hi Alex, I just checked the fedora:latest container. It also puts 'clock' group=20 in a basic setup package, which, according to its description, is=20 basically 'base-passwd + base-files' in Yocto. See commands and results below: """ [root@607fbfbf12bb /]# grep clock /etc/group clock:x:103: [root@607fbfbf12bb /]# rpm -qf /etc/group setup-2.15.0-13.fc42.noarch [root@607fbfbf12bb /]# rpm -qi setup | grep -A 4 Summary Summary=C2=A0=C2=A0=C2=A0=C2=A0 : A set of system configuration and setup= files Description : The setup package contains a set of important system configuration and setup files, such as passwd, group, and profile. """ I also checked base-passwd upstream and debian:latest container.=20 base-passwd upstream does not have clock group:=20 https://salsa.debian.org/debian/base-passwd/-/blob/master/group.master?re= f_type=3Dheads.=20 And debian:latest is using systemd 257.8 so it does not have this=20 'clock' group issue now. I'll use gid 103 in patch V4 to sync with fedora (though not necessary). Regards, Qi