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* utmp.h
@ 2019-12-27  2:49 exitworld
  2019-12-27 11:53 ` utmp.h A. Wilcox
  0 siblings, 1 reply; 2+ messages in thread
From: exitworld @ 2019-12-27  2:49 UTC (permalink / raw)
  To: musl


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I believe the paths to utmp and wtmp are defined wrong in utmp.h. Right now they are defined in dev/null, when they should be /var/run/utmp and /var/log/wtmp. Please see man utmp(5) and the FHS 5.10.2 and 5.13.2

you can respond if you'd like

thank you,
justin

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* Re: utmp.h
  2019-12-27  2:49 utmp.h exitworld
@ 2019-12-27 11:53 ` A. Wilcox
  0 siblings, 0 replies; 2+ messages in thread
From: A. Wilcox @ 2019-12-27 11:53 UTC (permalink / raw)
  To: musl; +Cc: Justin

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On 26/12/2019 20:49, exitworld@tutanota.com wrote:
> 
> I believe the paths to utmp and wtmp are defined wrong in utmp.h. Right
> now they are defined in dev/null, when they should be /var/run/utmp and
> /var/log/wtmp. Please see man utmp(5) and the FHS 5.10.2 and 5.13.2
> 
> you can respond if you'd like
> 
> thank you,
> justin


Hi there Justin,

musl does not implement the utmp/wtmp family of functions itself[1]; it
only provides stubs so that software that uses them can build (but those
functions requiring utmp/wtmp will not work).

For full operation with the utmp(x) functions, you will need to use
something like skarnet's utmps[2], which implements these functions in a
secure manner.  Right now, there are only two distributions which offer
utmps: Adélie and NixOS.  I am not sure how well-integrated utmps is in
to NixOS, but at Adélie we have fully integrated it and all packages
that utilise the utmp functions work fully as intended.

I hope this helps.

Best,
--arw



[1]:
https://wiki.musl-libc.org/faq.html#Q:-Why-is-the-utmp/wtmp-functionality-only-implemented-as-stubs?
(though we at Adélie, obviously, disagree with the rationale)

[2]: https://skarnet.org/software/utmps/


-- 
A. Wilcox (awilfox)
Project Lead, Adélie Linux
https://www.adelielinux.org


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