DOKK / manpages / debian 11 / libowfat-dev / io_tryreadtimeout.3.en
io_tryreadtimeout(3) Library Functions Manual io_tryreadtimeout(3)

io_tryreadtimeout - read from a descriptor without blocking

#include <io.h>

int io_tryreadtimeout(int64 fd,char* buf,int64 len);

io_tryreadtimeout is identical to io_tryread, with the following exception: if

•
io_tryread returns -1 (the descriptor is not ready for reading), and
•
the descriptor has a timeout, and
•
the read attempt was after the descriptor's timeout,

then io_tryreadtimeout instead returns -2, with errno set to ETIMEDOUT.

io_nonblock(3), io_waitread(3), io_tryread(3)