Re: systemd 238 and sysusers

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On 07/03/18 10:10, Florian Weimer wrote:
On 03/06/2018 03:24 PM, Zbigniew Jędrzejewski-Szmek wrote:
It's a very simple tool to create system users and group in /etc/passwd.
It just creates entries in/etc/{passwd,group,shadow}, and does not
interact with audit in any way afaik.

Does it perform any locking or cache invalidation?

It appears to do locking:

https://github.com/systemd/systemd/blob/master/src/sysusers/sysusers.c#L1953

which is calling:

https://github.com/systemd/systemd/blob/master/src/basic/user-util.c#L548

which takes a write lock on /etc/.pwd.lock around everything.

Tom

--
Tom Hughes (tom@xxxxxxxxxx)
http://compton.nu/
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