On Thursday 08 March 2007 18:28, Linus Torvalds wrote: > The sad part is that there really is no reason why the BSD crowd couldn't > have done recvmsg() as an "extended read with per-system call flags", > which would have made things like O_NONBLOCK etc unnecessary, because you > could do it just with MSG_DONTWAIT..
Wait a second here... O_NONBLOCK is not just unnecessary - it's buggy! Try to do nonblocking read from stdin (fd #0) - * setting O_NONBLOCK with fcntl will set it for all other processes which has the same stdin! * trying to reset O_NONBLOCK after the read doesn't help (think kill -9) * duping fd #0 doesn't help because O_NONBLOCK is not per-fd, it's shared just like filepos. I really like that trick with recvmsg + MSG_DONTWAIT instead. -- vda - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
