Stephen Smoogen <ssmoogen@xxxxxxxxxx> writes:
> I have seen this listed as NOT A BUG even with realtime programmers because
> the application can be run in all kinds of ways which could induce failures
> that are 'environment' versus 'application'. I expect it depends on the
> exact environment but what is the correct code?
AFAIU, it's best to call fsync() before calling close().
The manpage for close() suggests the following [1]:
A careful programmer who wants to know about I/O errors may precede
close() with a call to fsync(2).
It's also worth mentioning that printf() may not be able to catch this
kind of error [2].
[1] https://www.mankier.com/2/close#Notes-Dealing_with_error_returns_from_close()
[2] https://www.mankier.com/2/close#Errors-ENOSPC
--
Tulio Magno
--
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