[NSWI131] HW 7: O_DIRECT vs O_SYNC

[Kuba Maroušek]

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