From: Alexander Dahl <post@lespocky.de>
To: ptxdist@pengutronix.de
Subject: Re: [ptxdist] [PATCH 2/2] avahi: add user to /etc/passwd
Date: Wed, 17 Dec 2014 09:30:13 +0100 [thread overview]
Message-ID: <cc7a7db70ab262c70e6c0052bf7564a1@localhost> (raw)
In-Reply-To: <1418768450-15876-1-git-send-email-r.schwebel@pengutronix.de>
Hei hei,
Am 2014-12-16 23:20, schrieb Robert Schwebel:
> We re-use the uids from Debian.
Which are not fixed. See from the desktop I'm working on:
% grep avahi /etc/passwd
avahi:x:105:112:Avahi mDNS daemon,,,:/var/run/avahi-daemon:/bin/false
Same for messagebus btw:
% grep messagebus /etc/passwd
messagebus:x:101:105::/var/run/dbus:/bin/false
Or systemd (on another machine):
% grep systemd /etc/passwd
systemd-timesync:x:107:112:systemd Time
Synchronization,,,:/run/systemd:/bin/false
systemd-network:x:108:113:systemd Network
Management,,,:/run/systemd/netif:/bin/false
systemd-resolve:x:109:114:systemd
Resolver,,,:/run/systemd/resolve:/bin/false
systemd-bus-proxy:x:110:115:systemd Bus Proxy,,,:/run/systemd:/bin/false
AFAIK Debian uses the next free uid when a service is installed for the
first time and creates its system users. See `man 8 adduser`.
> sshd:x:100:65534:SSH Server:/var/run/sshd:/bin/false
Three different UIDs on three different Debian machines: 100, 103, 114 …
I would probably find even more.
> messagebus:x:103:104:messagebus:/dev/null:/bin/false
> +avahi:x:107:115:Avahi mDNS daemon:/var/run/avahi-daemon:/bin/false
> systemd-network:x:202:202:systemd-network:/dev/null:/bin/false
> systemd-resolve:x:203:65534:systemd-resolve:/dev/null:/bin/false
> systemd-timesync:x:203:65534:systemd-timesync:/dev/null:/bin/false
Long story short: there are no fixed UIDs in Debian, just something like
classes. See "9.2.2 UID and GID classes" on
https://www.debian.org/doc/debian-policy/ch-opersys.html for details.
Of course its fine to choose any default uid/gid for ptxdist, but
re-using them from Debian is misleading. ;-)
HTH & Greets
Alex
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next prev parent reply other threads:[~2014-12-17 8:30 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-12-16 22:20 Robert Schwebel
2014-12-17 8:30 ` Alexander Dahl [this message]
2014-12-17 9:31 ` Robert Schwebel
2014-12-17 15:29 ` Uwe Kleine-König
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