Henry Vermaak wrote:
On 08/03/11 10:30, Mark Morgan Lloyd wrote:
Can anybody say whether there is a good reason that serial.pp lacks a
function to read the CD signal?
Is SerFlush, which calls fpfsync, intended to discard input data, output
data or both?
fsync just makes sure all the in-kernel caches are written to the
device. Flushing input data is just a matter of reading it.
Thanks for that Henry. Obviously there's scope for confusion here with
the kernel's tcflush() and tcdrain() functions, where tcflush discards
input and/or output data.
--
Mark Morgan Lloyd
markMLl .AT. telemetry.co .DOT. uk
[Opinions above are the author's, not those of his employers or colleagues]
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