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Reject posix_close(3).

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Jonas 'Sortie' Termansen 2024-06-23 17:50:09 +02:00
parent 0f5aaed789
commit 752c9b8aa2
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share/man/man7/portability.7
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@ -166,6 +166,25 @@ is implemented in
per POSIX, however some operating systems have a
.In sys/poll.h
alias which is not implemented.
.Ss posix_close
.Xr close 2
should be used instead.
POSIX 2024 defined this replacement interface because some broken legacy
operating systems could fail with
.Ev EINTR
in
.Xr close 2
on slow devices,
instead of returning 0 and either completing the operating in the background
or aborting it.
However, this means most programs need to be updated to use the more
complicated alternative function instead for no practical gain, which isn't
going to happen.
The standard has added a lot of complexity where none needs to exist, which
is rejected in this operating system.
.Xr close 2
never fails with
.Ev EINTR on this operating system.
.Ss printf
.Xr printf 3
is implemented, however floating point formatting is not currently implemented