[NSWI131] HW 7: O_DIRECT vs O_SYNC

[Petr Tůma]

Hi,

oops, sorry for the oversight, please use O_SYNC everywhere and O_DIRECT where it works.

Thank you, Petr


On 20/04/2020 18:40, Kuba Maroušek wrote:
> Hello,
> 
> I'm working on the last homework to date and was wondering, can I use
> O_SYNC instead of O_DIRECT when calling open()?
> 
> I was able to make O_DIRECT work with an ordinary file, however, it
> does not let me write to /dev/null. From the manual page, it seems we
> can use O_SYNC as well because this option also forces the data to be
> written to the real destination. Is this correct?
> 
> Thank you for the answer
> Kuba Maroušek
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