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Use utmpx where available #52

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@awilfox awilfox commented Jun 16, 2018

On the musl libc, utmp is unimplemented. The utmps library by skarnet provides utmpx functionality on musl, but not utmp. This pull request modifies Linux PAM to support user accounting on musl distros that link it to utmps, by using <utmpx.h> instead of <utmp.h> if HAVE_UTMPX_H is defined in config.h.

On glibc, utmpx and utmp are aliases, so there is no functional change there.

awilfox added 6 commits Jun 16, 2018
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@t8m t8m commented Feb 18, 2020

I am concerned about making the utmpx calls as the default. They should be done only for the MUSL case.

@t8m t8m added the needschange label Feb 18, 2020
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