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Date: Mon, 25 May 2009 12:50:22 +0300
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Subject: serial device and fsync
From: Ramagudi Naziir <naziirr@gmail.com>
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Hi all,

I need to write(2) a certain character to a serial device (using the
standard /dev/ttySx), and make sure it was transferred to the device
before I continue. I tried fsync(2), but that failed (does fsync even
apply to character devices or only block devices ?).

Any idea ?

Is it even possible or should I just usleep(500ms) after write(2) ? (I
know, it's ugly..).

Thanks in advance,
Naziir.