I'd like to know if a fd has data available for reading. I have tried <code>ioctl</code> with <code>FIONREAD</code> but that results in a "Operation not supported error". Any ideas?

You can use <code>select()</code>, with a zero (not <code>NULL</code>) timeout.

Use <code>poll()</code> or <code>select()</code> on your file descriptor.

How to check if a file descriptor has any data available?

You can use select(), with a zero (not NULL) timeout.

162

answered Oct 27 '22 01:10

Use poll() or select() on your file descriptor.

answered Oct 27 '22 00:10

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