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Re: UID and GID generation



On 2016-08-15 01:09:20 +0200 (+0200), Martin Bammer wrote:
[...]
> I thought that the IDs for system services are fixed. Static ID
> mapping is a nice idea which would be helpful for system services.
[...]

Some of them are fixed: https://wiki.debian.org/SystemGroups

There are compiled-in defaults for SYS_GID_MIN and SYS_UID_MIN of
100 so GIDs and UIDs you see lower than that are fixed assignments.
Red Hat/Fedora have been continuing to add to the list on their
distros over the years, and have to explicitly bump these minimums
in /etc/login.defs as they eventually grew past 100:
https://git.fedorahosted.org/cgit/setup.git/tree/uidgid
-- 
Jeremy Stanley


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