On Fri, 17 Oct 2003, Andy Howell wrote:
> I am trying to setup a pipe to do non-blocking IO:
>
> int main()
> {
> int pipefd[2];
> int n;
> n = 1;
>
> pipe(pipefd);
> perror("Pipe: ");
> ioctl(pipefd[0], FIOBIO, &n);
> perror("Ioctl: ");
> }
>
> When I run this, I get:
>
> Pipe: No Error
> Ioctl: Invalid argument
>
> Any ideas?
>
Yup, unsupported.
from src/winsup/cygwin/fhandler.cc:909
int
fhandler_base::ioctl (unsigned int cmd, void *buf)
{
if (cmd == FIONBIO)
syscall_printf ("ioctl (FIONBIO, %p)", buf);
else
syscall_printf ("ioctl (%x, %p)", cmd, buf);
set_errno (EINVAL);
return -1;
}
--
Brian Ford
Senior Realtime Software Engineer
VITAL - Visual Simulation Systems
FlightSafety International
Phone: 314-551-8460
Fax: 314-551-8444
--
Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple
Problem reports: http://cygwin.com/problems.html
Documentation: http://cygwin.com/docs.html
FAQ: http://cygwin.com/faq/
